diff options
| author | Dave Penkler <dpenkler@gmail.com> | 2025-11-17 15:40:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-11-24 17:52:11 +0100 |
| commit | e6ab504633e4c06e35377ecf3c8cbc304de79858 (patch) | |
| tree | dc8847cb3d571c6a5381e1e83bc24d8fd043f295 /drivers/staging | |
| parent | a64ff10ca69bd3d6f056fdf5fcf80922fa9a4492 (diff) | |
staging: gpib: Destage gpib
Move the gpib drivers out of staging and into the "real" part of the
kernel. This entails:
- Remove the gpib Kconfig menu and Makefile build rule from staging.
- Remove gpib/uapi from the header file search path in subdir-ccflags
of the gpib Makefile
- move the gpib/uapi files to include/uapi/linux
- Move the gpib tree out of staging to drivers.
- Remove the word "Linux" from the gpib Kconfig file.
- Add the gpib Kconfig menu and Makefile build rule to drivers
Signed-off-by: Dave Penkler <dpenkler@gmail.com>
Link: https://patch.msgid.link/20251117144021.23569-5-dpenkler@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
70 files changed, 0 insertions, 28205 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 075e775d3868..2f92cd698bef 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -48,6 +48,4 @@ source "drivers/staging/axis-fifo/Kconfig" source "drivers/staging/vme_user/Kconfig" -source "drivers/staging/gpib/Kconfig" - endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index e681e403509c..f5b8876aa536 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -13,4 +13,3 @@ obj-$(CONFIG_MOST) += most/ obj-$(CONFIG_GREYBUS) += greybus/ obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/ obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/ -obj-$(CONFIG_GPIB) += gpib/ diff --git a/drivers/staging/gpib/Kconfig b/drivers/staging/gpib/Kconfig deleted file mode 100644 index aa01538d5beb..000000000000 --- a/drivers/staging/gpib/Kconfig +++ /dev/null @@ -1,255 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -menuconfig GPIB - tristate "Linux GPIB drivers" - help - Enable support for GPIB cards and dongles for Linux. GPIB - is the General Purpose Interface Bus which conforms to the - IEEE488 standard. - - This set of drivers can be used with the corresponding user - space library that can be found on Sourceforge under linux-gpib. - Select the drivers for your hardware from the list. - -if GPIB - -config GPIB_COMMON - tristate "GPIB core" - help - - Core common driver for all GPIB drivers. It provides the - interface for the userland library - - To compile this driver as a module, choose M here: the module will be - called gpib_common - -config GPIB_AGILENT_82350B - tristate "Agilent 8235xx PCI(e) adapters" - depends on PCI - select GPIB_COMMON - select GPIB_TMS9914 - help - Enable support for HP/Agilent/Keysight boards - 82350A - 82350B - 82351A - - To compile this driver as a module, choose M here: the module will be - called agilent_82350b. - -config GPIB_AGILENT_82357A - tristate "Agilent 82357a/b USB dongles" - select GPIB_COMMON - depends on USB - help - Enable support for Agilent/Keysight 82357x USB dongles. - - To compile this driver as a module, choose M here: the module will be - called agilent_82357a. - -config GPIB_CEC_PCI - tristate "CEC PCI board" - depends on PCI - depends on HAS_IOPORT - select GPIB_COMMON - select GPIB_NEC7210 - help - Enable support for Capital Equipment Corporation PCI-488 - and Keithly KPCI-488 boards. - - To compile this driver as a module, choose M here: the module will be - called cec_gpib. - -config GPIB_NI_PCI_ISA - tristate "NI PCI/ISA compatible boards" - depends on ISA_BUS || PCI || PCMCIA - depends on HAS_IOPORT - depends on PCMCIA || !PCMCIA - depends on HAS_IOPORT_MAP - select GPIB_COMMON - select GPIB_NEC7210 - help - Enable support for National Instruments boards based - on TNT4882 chips: - AT-GPIB (with NAT4882 chip) - AT-GPIB (with NEC7210 chip) - AT-GPIB/TNT - PCI-GPIB - PCIe-GPIB - PCI-GPIB+ - PCM-GPIB - PXI-GPIB - PCMCIA-GPIB - and Capital Equipment Corporation CEC-488 board. - - To compile this driver as a module, choose M here: the module will be - called tnt4882. - -config GPIB_CB7210 - tristate "Measurement Computing compatible boards" - depends on HAS_IOPORT - depends on ISA_BUS || PCI || PCMCIA - depends on PCMCIA || !PCMCIA - select GPIB_COMMON - select GPIB_NEC7210 - help - Enable support for Measurement Computing (Computer Boards): - CPCI_GPIB, ISA-GPIB, ISA-GPIB/LC, PCI-GPIB/1M, PCI-GPIB/300K and - PCMCIA-GPIB - Quancom PCIGPIB-1 with MC cb7210 chip - - To compile this driver as a module, choose M here: the module will be - -config GPIB_NI_USB - tristate "NI USB dongles" - select GPIB_COMMON - depends on USB - help - Enable support for National Instruments - GPIB-USB-B - GPIB-USB-HS - GPIB-USB-HS+ - Keithly - KUSB-488 - KUSB-488A - Measurement Computing (Computer Boards) - USB-488 - - To compile this driver as a module, choose M here: the module will be - called ni_usb. - -config GPIB_FLUKE - tristate "Fluke" - depends on OF - select GPIB_COMMON - select GPIB_NEC7210 - help - GPIB driver for Fluke based cda devices. - - To compile this driver as a module, choose M here: the module will be - called fluke_gpib - -config GPIB_FMH - tristate "FMH FPGA based devices" - select GPIB_COMMON - select GPIB_NEC7210 - depends on !PPC - depends on OF && PCI - help - GPIB driver for fmhess FPGA based devices - - To compile this driver as a module, choose M here: the module will be - called fmh_gpib - -config GPIB_GPIO - tristate "RPi GPIO bitbang" - depends on ARCH_BCM2835 || COMPILE_TEST - select GPIB_COMMON - help - GPIB bitbang driver Raspberry Pi GPIO adapters - - To compile this driver as a module, choose M here: the module will be - called gpib_bitbang - -config GPIB_HP82335 - tristate "HP82335/HP27209" - depends on ISA_BUS - select GPIB_COMMON - select GPIB_TMS9914 - help - GPIB driver for HP82335 and HP27209 boards - - To compile this driver as a module, choose M here: the module will be - called hp82335 - - -config GPIB_HP82341 - tristate "HP82341x" - select GPIB_COMMON - select GPIB_TMS9914 - depends on ISA_BUS || EISA - help - GPIB driver for HP82341 A/B/C/D boards - - To compile this driver as a module, choose M here: the module will be - called hp82341 - -config GPIB_INES - tristate "INES" - depends on PCI || ISA_BUS || PCMCIA - depends on PCMCIA || !PCMCIA - depends on HAS_IOPORT - select GPIB_COMMON - select GPIB_NEC7210 - help - GPIB driver for Ines compatible boards - Ines - GPIB-HS-NT - GPIB for Compact PCI - GPIB for PCI - GPIB for PCMCIA - GPIB PC/104 - Hameg - HO80-2 - Quancom - PCIGPIB-1 based on Ines iGPIB 72010 chip - - To compile this driver as a module, choose M here: the module will be - called ines_gpib - called cb7210. - -config GPIB_PCMCIA - def_bool y - depends on PCMCIA && (GPIB_NI_PCI_ISA || GPIB_CB7210 || GPIB_INES) - help - Enable PCMCIA/CArdbus support for National Instruments, - measurement computing boards and Ines boards. - -config GPIB_LPVO - tristate "LPVO DIY USB GPIB" - select GPIB_COMMON - depends on USB - help - Enable support for LPVO Self-made usb-gpib adapter - - To compile this driver as a module, choose M here: the module will be - called lpvo_usb_gpib - -config GPIB_PC2 - tristate "PC2 PC2a" - depends on ISA_BUS - depends on HAS_IOPORT - select GPIB_COMMON - select GPIB_NEC7210 - help - Enable support for pc2 and pc2a compatible adapters - Capital Equipment Corporation PC-488 - CONTEC GP-IB(PC) - Hameg HO80 - Iotech GP488B - Keithly MBC-488 - Measurement Computing ISA-GPIB-PCA2 - National Instruments PCII, PCIIa and PCII/IIa - - To compile this driver as a module, choose M here: the module will be - called pc2_gpib - - -config GPIB_TMS9914 - tristate - select GPIB_COMMON - help - Enable support for TMS 9914 chip. - - To compile this driver as a module, choose M here: the module will be - called tms9914 - -config GPIB_NEC7210 - tristate - select GPIB_COMMON - help - Enable support for NEC 7210 compatible chips. - - To compile this driver as a module, choose M here: the module will be - called nec7210 - -endif # GPIB diff --git a/drivers/staging/gpib/Makefile b/drivers/staging/gpib/Makefile deleted file mode 100644 index d0e88f5c0844..000000000000 --- a/drivers/staging/gpib/Makefile +++ /dev/null @@ -1,20 +0,0 @@ - -subdir-ccflags-y += -I$(src)/include -I$(src)/uapi - -obj-$(CONFIG_GPIB_AGILENT_82350B) += agilent_82350b/ -obj-$(CONFIG_GPIB_AGILENT_82357A) += agilent_82357a/ -obj-$(CONFIG_GPIB_CB7210) += cb7210/ -obj-$(CONFIG_GPIB_CEC_PCI) += cec/ -obj-$(CONFIG_GPIB_COMMON) += common/ -obj-$(CONFIG_GPIB_FLUKE) += eastwood/ -obj-$(CONFIG_GPIB_FMH) += fmh_gpib/ -obj-$(CONFIG_GPIB_GPIO) += gpio/ -obj-$(CONFIG_GPIB_HP82335) += hp_82335/ -obj-$(CONFIG_GPIB_HP82341) += hp_82341/ -obj-$(CONFIG_GPIB_INES) += ines/ -obj-$(CONFIG_GPIB_LPVO) += lpvo_usb_gpib/ -obj-$(CONFIG_GPIB_NEC7210) += nec7210/ -obj-$(CONFIG_GPIB_NI_USB) += ni_usb/ -obj-$(CONFIG_GPIB_PC2) += pc2/ -obj-$(CONFIG_GPIB_TMS9914) += tms9914/ -obj-$(CONFIG_GPIB_NI_PCI_ISA) += tnt4882/ diff --git a/drivers/staging/gpib/TODO b/drivers/staging/gpib/TODO deleted file mode 100644 index ac07dd90b4ef..000000000000 --- a/drivers/staging/gpib/TODO +++ /dev/null @@ -1,10 +0,0 @@ -TODO: -- checkpatch.pl fixes - These checks should be ignored: - CHECK:ALLOC_SIZEOF_STRUCT: Prefer kmalloc(sizeof(*board->private_data)...) over kmalloc(sizeof(struct xxx_priv)...) - ./gpio/gpib_bitbang.c:50: ERROR:COMPLEX_MACRO: Macros with complex values should be enclosed in parenthese - This warning will be addressed later: WARNING:UNDOCUMENTED_DT_STRING: DT compatible string -- resolve XXX notes where possible -- fix FIXME notes -- clean-up commented-out code -- fix typos diff --git a/drivers/staging/gpib/agilent_82350b/Makefile b/drivers/staging/gpib/agilent_82350b/Makefile deleted file mode 100644 index f24e1e713a63..000000000000 --- a/drivers/staging/gpib/agilent_82350b/Makefile +++ /dev/null @@ -1,2 +0,0 @@ - -obj-$(CONFIG_GPIB_AGILENT_82350B) += agilent_82350b.o diff --git a/drivers/staging/gpib/agilent_82350b/agilent_82350b.c b/drivers/staging/gpib/agilent_82350b/agilent_82350b.c deleted file mode 100644 index 01a5bb43cd2d..000000000000 --- a/drivers/staging/gpib/agilent_82350b/agilent_82350b.c +++ /dev/null @@ -1,896 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2002, 2004 by Frank Mori Hess * - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "agilent_82350b.h" -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <asm/dma.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/wait.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for Agilent 82350b"); - -static int read_transfer_counter(struct agilent_82350b_priv *a_priv); -static unsigned short read_and_clear_event_status(struct gpib_board *board); -static void set_transfer_counter(struct agilent_82350b_priv *a_priv, int count); -static int agilent_82350b_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written); - -static int agilent_82350b_accel_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) - -{ - struct agilent_82350b_priv *a_priv = board->private_data; - struct tms9914_priv *tms_priv = &a_priv->tms9914_priv; - int retval = 0; - unsigned short event_status; - int i, num_fifo_bytes; - /* hardware doesn't support checking for end-of-string character when using fifo */ - if (tms_priv->eos_flags & REOS) - return tms9914_read(board, tms_priv, buffer, length, end, bytes_read); - - clear_bit(DEV_CLEAR_BN, &tms_priv->state); - - read_and_clear_event_status(board); - *end = 0; - *bytes_read = 0; - if (length == 0) - return 0; - /* disable fifo for the moment */ - writeb(DIRECTION_GPIB_TO_HOST, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - /* handle corner case of board not in holdoff and one byte might slip in early */ - if (tms_priv->holdoff_active == 0 && length > 1) { - size_t num_bytes; - - retval = tms9914_read(board, tms_priv, buffer, 1, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0 || *end) - return retval; - ++buffer; - --length; - } - tms9914_set_holdoff_mode(tms_priv, TMS9914_HOLDOFF_EOI); - tms9914_release_holdoff(tms_priv); - i = 0; - num_fifo_bytes = length - 1; - /* disable BI interrupts */ - write_byte(tms_priv, tms_priv->imr0_bits & ~HR_BIIE, IMR0); - while (i < num_fifo_bytes && *end == 0) { - int block_size; - int j; - int count; - - block_size = min(num_fifo_bytes - i, agilent_82350b_fifo_size); - set_transfer_counter(a_priv, block_size); - writeb(ENABLE_TI_TO_SRAM | DIRECTION_GPIB_TO_HOST, - a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - if (agilent_82350b_fifo_is_halted(a_priv)) - writeb(RESTART_STREAM_BIT, a_priv->gpib_base + STREAM_STATUS_REG); - - clear_bit(READ_READY_BN, &tms_priv->state); - - retval = wait_event_interruptible(board->wait, - ((event_status = - read_and_clear_event_status(board)) & - (TERM_COUNT_STATUS_BIT | - BUFFER_END_STATUS_BIT)) || - test_bit(DEV_CLEAR_BN, &tms_priv->state) || - test_bit(TIMO_NUM, &board->status)); - if (retval) { - retval = -ERESTARTSYS; - break; - } - count = block_size - read_transfer_counter(a_priv); - for (j = 0; j < count && i < num_fifo_bytes; ++j) - buffer[i++] = readb(a_priv->sram_base + j); - if (event_status & BUFFER_END_STATUS_BIT) { - clear_bit(RECEIVED_END_BN, &tms_priv->state); - - tms_priv->holdoff_active = 1; - *end = 1; - } - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &tms_priv->state)) { - retval = -EINTR; - break; - } - } - /* re-enable BI interrupts */ - write_byte(tms_priv, tms_priv->imr0_bits, IMR0); - *bytes_read += i; - buffer += i; - length -= i; - writeb(DIRECTION_GPIB_TO_HOST, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - if (retval < 0) - return retval; - /* read last bytes if we havn't received an END yet */ - if (*end == 0) { - size_t num_bytes; - /* try to make sure we holdoff after last byte read */ - retval = tms9914_read(board, tms_priv, buffer, length, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - } - return 0; -} - -static int translate_wait_return_value(struct gpib_board *board, int retval) - -{ - struct agilent_82350b_priv *a_priv = board->private_data; - struct tms9914_priv *tms_priv = &a_priv->tms9914_priv; - - if (retval) - return -ERESTARTSYS; - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &tms_priv->state)) - return -EINTR; - return 0; -} - -static int agilent_82350b_accel_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, - size_t *bytes_written) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - struct tms9914_priv *tms_priv = &a_priv->tms9914_priv; - int i, j; - unsigned short event_status; - int retval = 0; - int fifotransferlength = length; - int block_size = 0; - size_t num_bytes; - - *bytes_written = 0; - if (send_eoi) - --fifotransferlength; - - clear_bit(DEV_CLEAR_BN, &tms_priv->state); - - writeb(0, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - - event_status = read_and_clear_event_status(board); - -#ifdef EXPERIMENTAL - /* wait for previous BO to complete if any */ - retval = wait_event_interruptible(board->wait, - test_bit(DEV_CLEAR_BN, &tms_priv->state) || - test_bit(WRITE_READY_BN, &tms_priv->state) || - test_bit(TIMO_NUM, &board->status)); - retval = translate_wait_return_value(board, retval); - - if (retval) - return retval; -#endif - - if (fifotransferlength > 0) { - retval = agilent_82350b_write(board, buffer, 1, 0, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - - write_byte(tms_priv, tms_priv->imr0_bits & ~HR_BOIE, IMR0); - for (i = 1; i < fifotransferlength;) { - clear_bit(WRITE_READY_BN, &tms_priv->state); - - block_size = min(fifotransferlength - i, agilent_82350b_fifo_size); - set_transfer_counter(a_priv, block_size); - for (j = 0; j < block_size; ++j, ++i) { - /* load data into board's sram */ - writeb(buffer[i], a_priv->sram_base + j); - } - writeb(ENABLE_TI_TO_SRAM, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - - if (agilent_82350b_fifo_is_halted(a_priv)) - writeb(RESTART_STREAM_BIT, a_priv->gpib_base + STREAM_STATUS_REG); - - retval = wait_event_interruptible(board->wait, - ((event_status = - read_and_clear_event_status(board)) & - TERM_COUNT_STATUS_BIT) || - test_bit(DEV_CLEAR_BN, &tms_priv->state) || - test_bit(TIMO_NUM, &board->status)); - writeb(0, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - num_bytes = block_size - read_transfer_counter(a_priv); - - *bytes_written += num_bytes; - retval = translate_wait_return_value(board, retval); - if (retval) - break; - } - write_byte(tms_priv, tms_priv->imr0_bits, IMR0); - if (retval < 0) - return retval; - - if (send_eoi) { - retval = agilent_82350b_write(board, buffer + fifotransferlength, 1, send_eoi, - &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - return 0; -} - -static unsigned short read_and_clear_event_status(struct gpib_board *board) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - unsigned long flags; - unsigned short status; - - spin_lock_irqsave(&board->spinlock, flags); - status = a_priv->event_status_bits; - a_priv->event_status_bits = 0; - spin_unlock_irqrestore(&board->spinlock, flags); - return status; -} - -static irqreturn_t agilent_82350b_interrupt(int irq, void *arg) - -{ - int tms9914_status1 = 0, tms9914_status2 = 0; - int event_status; - struct gpib_board *board = arg; - struct agilent_82350b_priv *a_priv = board->private_data; - unsigned long flags; - irqreturn_t retval = IRQ_NONE; - - spin_lock_irqsave(&board->spinlock, flags); - event_status = readb(a_priv->gpib_base + EVENT_STATUS_REG); - if (event_status & IRQ_STATUS_BIT) - retval = IRQ_HANDLED; - - if (event_status & TMS9914_IRQ_STATUS_BIT) { - tms9914_status1 = read_byte(&a_priv->tms9914_priv, ISR0); - tms9914_status2 = read_byte(&a_priv->tms9914_priv, ISR1); - tms9914_interrupt_have_status(board, &a_priv->tms9914_priv, tms9914_status1, - tms9914_status2); - } - /* write-clear status bits */ - if (event_status & (BUFFER_END_STATUS_BIT | TERM_COUNT_STATUS_BIT)) { - writeb(event_status & (BUFFER_END_STATUS_BIT | TERM_COUNT_STATUS_BIT), - a_priv->gpib_base + EVENT_STATUS_REG); - a_priv->event_status_bits |= event_status; - wake_up_interruptible(&board->wait); - } - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -static void agilent_82350b_detach(struct gpib_board *board); - -static int read_transfer_counter(struct agilent_82350b_priv *a_priv) -{ - int lo, mid, value; - - lo = readb(a_priv->gpib_base + XFER_COUNT_LO_REG); - mid = readb(a_priv->gpib_base + XFER_COUNT_MID_REG); - value = (lo & 0xff) | ((mid << 8) & 0x7f00); - value = ~(value - 1) & 0x7fff; - return value; -} - -static void set_transfer_counter(struct agilent_82350b_priv *a_priv, int count) -{ - int complement = -count; - - writeb(complement & 0xff, a_priv->gpib_base + XFER_COUNT_LO_REG); - writeb((complement >> 8) & 0xff, a_priv->gpib_base + XFER_COUNT_MID_REG); - /* I don't think the hi count reg is even used, but oh well */ - writeb((complement >> 16) & 0xf, a_priv->gpib_base + XFER_COUNT_HI_REG); -} - -/* wrappers for interface functions */ -static int agilent_82350b_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_read(board, &priv->tms9914_priv, buffer, length, end, bytes_read); -} - -static int agilent_82350b_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) - -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_write(board, &priv->tms9914_priv, buffer, length, send_eoi, bytes_written); -} - -static int agilent_82350b_command(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) - -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_command(board, &priv->tms9914_priv, buffer, length, bytes_written); -} - -static int agilent_82350b_take_control(struct gpib_board *board, int synchronous) - -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_take_control_workaround(board, &priv->tms9914_priv, synchronous); -} - -static int agilent_82350b_go_to_standby(struct gpib_board *board) - -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_go_to_standby(board, &priv->tms9914_priv); -} - -static int agilent_82350b_request_system_control(struct gpib_board *board, int request_control) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - - if (request_control) { - a_priv->card_mode_bits |= CM_SYSTEM_CONTROLLER_BIT; - if (a_priv->model != MODEL_82350A) - writeb(IC_SYSTEM_CONTROLLER_BIT, a_priv->gpib_base + INTERNAL_CONFIG_REG); - } else { - a_priv->card_mode_bits &= ~CM_SYSTEM_CONTROLLER_BIT; - if (a_priv->model != MODEL_82350A) - writeb(0, a_priv->gpib_base + INTERNAL_CONFIG_REG); - } - writeb(a_priv->card_mode_bits, a_priv->gpib_base + CARD_MODE_REG); - return tms9914_request_system_control(board, &a_priv->tms9914_priv, request_control); -} - -static void agilent_82350b_interface_clear(struct gpib_board *board, int assert) - -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_interface_clear(board, &priv->tms9914_priv, assert); -} - -static void agilent_82350b_remote_enable(struct gpib_board *board, int enable) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_remote_enable(board, &priv->tms9914_priv, enable); -} - -static int agilent_82350b_enable_eos(struct gpib_board *board, u8 eos_byte, - int compare_8_bits) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_enable_eos(board, &priv->tms9914_priv, eos_byte, compare_8_bits); -} - -static void agilent_82350b_disable_eos(struct gpib_board *board) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_disable_eos(board, &priv->tms9914_priv); -} - -static unsigned int agilent_82350b_update_status(struct gpib_board *board, - unsigned int clear_mask) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_update_status(board, &priv->tms9914_priv, clear_mask); -} - -static int agilent_82350b_primary_address(struct gpib_board *board, - unsigned int address) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_primary_address(board, &priv->tms9914_priv, address); -} - -static int agilent_82350b_secondary_address(struct gpib_board *board, - unsigned int address, int enable) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_secondary_address(board, &priv->tms9914_priv, address, enable); -} - -static int agilent_82350b_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_parallel_poll(board, &priv->tms9914_priv, result); -} - -static void agilent_82350b_parallel_poll_configure(struct gpib_board *board, - u8 config) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_parallel_poll_configure(board, &priv->tms9914_priv, config); -} - -static void agilent_82350b_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_parallel_poll_response(board, &priv->tms9914_priv, ist); -} - -static void agilent_82350b_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_serial_poll_response(board, &priv->tms9914_priv, status); -} - -static u8 agilent_82350b_serial_poll_status(struct gpib_board *board) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_serial_poll_status(board, &priv->tms9914_priv); -} - -static int agilent_82350b_line_status(const struct gpib_board *board) -{ - struct agilent_82350b_priv *priv = board->private_data; - - return tms9914_line_status(board, &priv->tms9914_priv); -} - -static int agilent_82350b_t1_delay(struct gpib_board *board, unsigned int nanosec) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - static const int nanosec_per_clock = 30; - unsigned int value; - - tms9914_t1_delay(board, &a_priv->tms9914_priv, nanosec); - - value = (nanosec + nanosec_per_clock - 1) / nanosec_per_clock; - if (value > 0xff) - value = 0xff; - writeb(value, a_priv->gpib_base + T1_DELAY_REG); - return value * nanosec_per_clock; -} - -static void agilent_82350b_return_to_local(struct gpib_board *board) -{ - struct agilent_82350b_priv *priv = board->private_data; - - tms9914_return_to_local(board, &priv->tms9914_priv); -} - -static int agilent_82350b_allocate_private(struct gpib_board *board) -{ - board->private_data = kzalloc(sizeof(struct agilent_82350b_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - return 0; -} - -static void agilent_82350b_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static int init_82350a_hardware(struct gpib_board *board, - const struct gpib_board_config *config) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - static const unsigned int firmware_length = 5302; - unsigned int borg_status; - static const unsigned int timeout = 1000; - int i, j; - const char *firmware_data = config->init_data; - const unsigned int plx_cntrl_static_bits = PLX9050_WAITO_NOT_USER0_SELECT_BIT | - PLX9050_USER0_OUTPUT_BIT | - PLX9050_LLOCK_NOT_USER1_SELECT_BIT | - PLX9050_USER1_OUTPUT_BIT | - PLX9050_USER2_OUTPUT_BIT | - PLX9050_USER3_OUTPUT_BIT | - PLX9050_PCI_READ_MODE_BIT | - PLX9050_PCI_WRITE_MODE_BIT | - PLX9050_PCI_RETRY_DELAY_BITS(64) | - PLX9050_DIRECT_SLAVE_LOCK_ENABLE_BIT; - - /* load borg data */ - borg_status = readb(a_priv->borg_base); - if ((borg_status & BORG_DONE_BIT)) - return 0; - /* need to programme borg */ - if (!config->init_data || config->init_data_length != firmware_length) { - dev_err(board->gpib_dev, "the 82350A board requires firmware after powering on.\n"); - return -EIO; - } - dev_dbg(board->gpib_dev, "Loading firmware...\n"); - - /* tickle the borg */ - writel(plx_cntrl_static_bits | PLX9050_USER3_DATA_BIT, - a_priv->plx_base + PLX9050_CNTRL_REG); - usleep_range(1000, 2000); - writel(plx_cntrl_static_bits, a_priv->plx_base + PLX9050_CNTRL_REG); - usleep_range(1000, 2000); - writel(plx_cntrl_static_bits | PLX9050_USER3_DATA_BIT, - a_priv->plx_base + PLX9050_CNTRL_REG); - usleep_range(1000, 2000); - - for (i = 0; i < config->init_data_length; ++i) { - for (j = 0; j < timeout && (readb(a_priv->borg_base) & BORG_READY_BIT) == 0; ++j) { - if (need_resched()) - schedule(); - usleep_range(10, 20); - } - if (j == timeout) { - dev_err(board->gpib_dev, "timed out loading firmware.\n"); - return -ETIMEDOUT; - } - writeb(firmware_data[i], a_priv->gpib_base + CONFIG_DATA_REG); - } - for (j = 0; j < timeout && (readb(a_priv->borg_base) & BORG_DONE_BIT) == 0; ++j) { - if (need_resched()) - schedule(); - usleep_range(10, 20); - } - if (j == timeout) { - dev_err(board->gpib_dev, "timed out waiting for firmware load to complete.\n"); - return -ETIMEDOUT; - } - dev_dbg(board->gpib_dev, " ...done.\n"); - return 0; -} - -static int test_sram(struct gpib_board *board) - -{ - struct agilent_82350b_priv *a_priv = board->private_data; - unsigned int i; - const unsigned int sram_length = pci_resource_len(a_priv->pci_device, SRAM_82350A_REGION); - /* test SRAM */ - const unsigned int byte_mask = 0xff; - - for (i = 0; i < sram_length; ++i) { - writeb(i & byte_mask, a_priv->sram_base + i); - if (need_resched()) - schedule(); - } - for (i = 0; i < sram_length; ++i) { - unsigned int read_value = readb(a_priv->sram_base + i); - - if ((i & byte_mask) != read_value) { - dev_err(board->gpib_dev, "SRAM test failed at %d wanted %d got %d\n", - i, (i & byte_mask), read_value); - return -EIO; - } - if (need_resched()) - schedule(); - } - dev_dbg(board->gpib_dev, "SRAM test passed 0x%x bytes checked\n", sram_length); - return 0; -} - -static int agilent_82350b_generic_attach(struct gpib_board *board, - const struct gpib_board_config *config, - int use_fifos) - -{ - struct agilent_82350b_priv *a_priv; - struct tms9914_priv *tms_priv; - int retval; - - board->status = 0; - - if (agilent_82350b_allocate_private(board)) - return -ENOMEM; - a_priv = board->private_data; - a_priv->using_fifos = use_fifos; - tms_priv = &a_priv->tms9914_priv; - tms_priv->read_byte = tms9914_iomem_read_byte; - tms_priv->write_byte = tms9914_iomem_write_byte; - tms_priv->offset = 1; - - /* find board */ - a_priv->pci_device = gpib_pci_get_device(config, PCI_VENDOR_ID_AGILENT, - PCI_DEVICE_ID_82350B, NULL); - if (a_priv->pci_device) { - a_priv->model = MODEL_82350B; - dev_dbg(board->gpib_dev, "Agilent 82350B board found\n"); - - } else { - a_priv->pci_device = gpib_pci_get_device(config, PCI_VENDOR_ID_AGILENT, - PCI_DEVICE_ID_82351A, NULL); - if (a_priv->pci_device) { - a_priv->model = MODEL_82351A; - dev_dbg(board->gpib_dev, "Agilent 82351B board found\n"); - - } else { - a_priv->pci_device = gpib_pci_get_subsys(config, PCI_VENDOR_ID_PLX, - PCI_DEVICE_ID_PLX_9050, - PCI_VENDOR_ID_HP, - PCI_SUBDEVICE_ID_82350A, - a_priv->pci_device); - if (a_priv->pci_device) { - a_priv->model = MODEL_82350A; - dev_dbg(board->gpib_dev, "HP/Agilent 82350A board found\n"); - } else { - dev_err(board->gpib_dev, "no 82350/82351 board found\n"); - return -ENODEV; - } - } - } - if (pci_enable_device(a_priv->pci_device)) { - dev_err(board->gpib_dev, "error enabling pci device\n"); - return -EIO; - } - if (pci_request_regions(a_priv->pci_device, DRV_NAME)) - return -ENOMEM; - switch (a_priv->model) { - case MODEL_82350A: - a_priv->plx_base = ioremap(pci_resource_start(a_priv->pci_device, PLX_MEM_REGION), - pci_resource_len(a_priv->pci_device, PLX_MEM_REGION)); - dev_dbg(board->gpib_dev, "plx base address remapped to 0x%p\n", a_priv->plx_base); - a_priv->gpib_base = ioremap(pci_resource_start(a_priv->pci_device, - GPIB_82350A_REGION), - pci_resource_len(a_priv->pci_device, - GPIB_82350A_REGION)); - dev_dbg(board->gpib_dev, "chip base address remapped to 0x%p\n", a_priv->gpib_base); - tms_priv->mmiobase = a_priv->gpib_base + TMS9914_BASE_REG; - a_priv->sram_base = ioremap(pci_resource_start(a_priv->pci_device, - SRAM_82350A_REGION), - pci_resource_len(a_priv->pci_device, - SRAM_82350A_REGION)); - dev_dbg(board->gpib_dev, "sram base address remapped to 0x%p\n", a_priv->sram_base); - a_priv->borg_base = ioremap(pci_resource_start(a_priv->pci_device, - BORG_82350A_REGION), - pci_resource_len(a_priv->pci_device, - BORG_82350A_REGION)); - dev_dbg(board->gpib_dev, "borg base address remapped to 0x%p\n", a_priv->borg_base); - - retval = init_82350a_hardware(board, config); - if (retval < 0) - return retval; - break; - case MODEL_82350B: - case MODEL_82351A: - a_priv->gpib_base = ioremap(pci_resource_start(a_priv->pci_device, GPIB_REGION), - pci_resource_len(a_priv->pci_device, GPIB_REGION)); - dev_dbg(board->gpib_dev, "chip base address remapped to 0x%p\n", a_priv->gpib_base); - tms_priv->mmiobase = a_priv->gpib_base + TMS9914_BASE_REG; - a_priv->sram_base = ioremap(pci_resource_start(a_priv->pci_device, SRAM_REGION), - pci_resource_len(a_priv->pci_device, SRAM_REGION)); - dev_dbg(board->gpib_dev, "sram base address remapped to 0x%p\n", a_priv->sram_base); - a_priv->misc_base = ioremap(pci_resource_start(a_priv->pci_device, MISC_REGION), - pci_resource_len(a_priv->pci_device, MISC_REGION)); - dev_dbg(board->gpib_dev, "misc base address remapped to 0x%p\n", a_priv->misc_base); - break; - default: - dev_err(board->gpib_dev, "invalid board\n"); - return -ENODEV; - } - - retval = test_sram(board); - if (retval < 0) - return retval; - - if (request_irq(a_priv->pci_device->irq, agilent_82350b_interrupt, - IRQF_SHARED, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to obtain irq %d\n", a_priv->pci_device->irq); - return -EIO; - } - a_priv->irq = a_priv->pci_device->irq; - dev_dbg(board->gpib_dev, " IRQ %d\n", a_priv->irq); - - writeb(0, a_priv->gpib_base + SRAM_ACCESS_CONTROL_REG); - a_priv->card_mode_bits = ENABLE_PCI_IRQ_BIT; - writeb(a_priv->card_mode_bits, a_priv->gpib_base + CARD_MODE_REG); - - if (a_priv->model == MODEL_82350A) { - /* enable PCI interrupts for 82350a */ - writel(PLX9050_LINTR1_EN_BIT | PLX9050_LINTR2_POLARITY_BIT | - PLX9050_PCI_INTR_EN_BIT, - a_priv->plx_base + PLX9050_INTCSR_REG); - } - - if (use_fifos) { - writeb(ENABLE_BUFFER_END_EVENTS_BIT | ENABLE_TERM_COUNT_EVENTS_BIT, - a_priv->gpib_base + EVENT_ENABLE_REG); - writeb(ENABLE_TERM_COUNT_INTERRUPT_BIT | ENABLE_BUFFER_END_INTERRUPT_BIT | - ENABLE_TMS9914_INTERRUPTS_BIT, a_priv->gpib_base + INTERRUPT_ENABLE_REG); - /* write-clear event status bits */ - writeb(BUFFER_END_STATUS_BIT | TERM_COUNT_STATUS_BIT, - a_priv->gpib_base + EVENT_STATUS_REG); - } else { - writeb(0, a_priv->gpib_base + EVENT_ENABLE_REG); - writeb(ENABLE_TMS9914_INTERRUPTS_BIT, - a_priv->gpib_base + INTERRUPT_ENABLE_REG); - } - board->t1_nano_sec = agilent_82350b_t1_delay(board, 2000); - tms9914_board_reset(tms_priv); - - tms9914_online(board, tms_priv); - - return 0; -} - -static int agilent_82350b_unaccel_attach(struct gpib_board *board, - const struct gpib_board_config *config) -{ - return agilent_82350b_generic_attach(board, config, 0); -} - -static int agilent_82350b_accel_attach(struct gpib_board *board, - const struct gpib_board_config *config) -{ - return agilent_82350b_generic_attach(board, config, 1); -} - -static void agilent_82350b_detach(struct gpib_board *board) -{ - struct agilent_82350b_priv *a_priv = board->private_data; - struct tms9914_priv *tms_priv; - - if (a_priv) { - if (a_priv->plx_base) /* disable interrupts */ - writel(0, a_priv->plx_base + PLX9050_INTCSR_REG); - - tms_priv = &a_priv->tms9914_priv; - if (a_priv->irq) - free_irq(a_priv->irq, board); - if (a_priv->gpib_base) { - tms9914_board_reset(tms_priv); - if (a_priv->misc_base) - iounmap(a_priv->misc_base); - if (a_priv->borg_base) - iounmap(a_priv->borg_base); - if (a_priv->sram_base) - iounmap(a_priv->sram_base); - if (a_priv->gpib_base) - iounmap(a_priv->gpib_base); - if (a_priv->plx_base) - iounmap(a_priv->plx_base); - pci_release_regions(a_priv->pci_device); - } - if (a_priv->pci_device) - pci_dev_put(a_priv->pci_device); - } - agilent_82350b_free_private(board); -} - -static struct gpib_interface agilent_82350b_unaccel_interface = { - .name = "agilent_82350b_unaccel", - .attach = agilent_82350b_unaccel_attach, - .detach = agilent_82350b_detach, - .read = agilent_82350b_read, - .write = agilent_82350b_write, - .command = agilent_82350b_command, - .request_system_control = agilent_82350b_request_system_control, - .take_control = agilent_82350b_take_control, - .go_to_standby = agilent_82350b_go_to_standby, - .interface_clear = agilent_82350b_interface_clear, - .remote_enable = agilent_82350b_remote_enable, - .enable_eos = agilent_82350b_enable_eos, - .disable_eos = agilent_82350b_disable_eos, - .parallel_poll = agilent_82350b_parallel_poll, - .parallel_poll_configure = agilent_82350b_parallel_poll_configure, - .parallel_poll_response = agilent_82350b_parallel_poll_response, - .local_parallel_poll_mode = NULL, /* XXX */ - .line_status = agilent_82350b_line_status, - .update_status = agilent_82350b_update_status, - .primary_address = agilent_82350b_primary_address, - .secondary_address = agilent_82350b_secondary_address, - .serial_poll_response = agilent_82350b_serial_poll_response, - .serial_poll_status = agilent_82350b_serial_poll_status, - .t1_delay = agilent_82350b_t1_delay, - .return_to_local = agilent_82350b_return_to_local, -}; - -static struct gpib_interface agilent_82350b_interface = { - .name = "agilent_82350b", - .attach = agilent_82350b_accel_attach, - .detach = agilent_82350b_detach, - .read = agilent_82350b_accel_read, - .write = agilent_82350b_accel_write, - .command = agilent_82350b_command, - .request_system_control = agilent_82350b_request_system_control, - .take_control = agilent_82350b_take_control, - .go_to_standby = agilent_82350b_go_to_standby, - .interface_clear = agilent_82350b_interface_clear, - .remote_enable = agilent_82350b_remote_enable, - .enable_eos = agilent_82350b_enable_eos, - .disable_eos = agilent_82350b_disable_eos, - .parallel_poll = agilent_82350b_parallel_poll, - .parallel_poll_configure = agilent_82350b_parallel_poll_configure, - .parallel_poll_response = agilent_82350b_parallel_poll_response, - .local_parallel_poll_mode = NULL, /* XXX */ - .line_status = agilent_82350b_line_status, - .update_status = agilent_82350b_update_status, - .primary_address = agilent_82350b_primary_address, - .secondary_address = agilent_82350b_secondary_address, - .serial_poll_response = agilent_82350b_serial_poll_response, - .serial_poll_status = agilent_82350b_serial_poll_status, - .t1_delay = agilent_82350b_t1_delay, - .return_to_local = agilent_82350b_return_to_local, -}; - -static int agilent_82350b_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) - -{ - return 0; -} - -static const struct pci_device_id agilent_82350b_pci_table[] = { - { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_HP, - PCI_SUBDEVICE_ID_82350A, 0, 0, 0 }, - { PCI_VENDOR_ID_AGILENT, PCI_DEVICE_ID_82350B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { PCI_VENDOR_ID_AGILENT, PCI_DEVICE_ID_82351A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, agilent_82350b_pci_table); - -static struct pci_driver agilent_82350b_pci_driver = { - .name = DRV_NAME, - .id_table = agilent_82350b_pci_table, - .probe = &agilent_82350b_pci_probe -}; - -static int __init agilent_82350b_init_module(void) -{ - int result; - - result = pci_register_driver(&agilent_82350b_pci_driver); - if (result) { - pr_err("pci_register_driver failed: error = %d\n", result); - return result; - } - - result = gpib_register_driver(&agilent_82350b_unaccel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_unaccel; - } - - result = gpib_register_driver(&agilent_82350b_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_interface; - } - - return 0; - -err_interface: - gpib_unregister_driver(&agilent_82350b_unaccel_interface); -err_unaccel: - pci_unregister_driver(&agilent_82350b_pci_driver); - - return result; -} - -static void __exit agilent_82350b_exit_module(void) -{ - gpib_unregister_driver(&agilent_82350b_interface); - gpib_unregister_driver(&agilent_82350b_unaccel_interface); - - pci_unregister_driver(&agilent_82350b_pci_driver); -} - -module_init(agilent_82350b_init_module); -module_exit(agilent_82350b_exit_module); diff --git a/drivers/staging/gpib/agilent_82350b/agilent_82350b.h b/drivers/staging/gpib/agilent_82350b/agilent_82350b.h deleted file mode 100644 index ef841957297f..000000000000 --- a/drivers/staging/gpib/agilent_82350b/agilent_82350b.h +++ /dev/null @@ -1,157 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002, 2004 by Frank Mori Hess * - ***************************************************************************/ - -#include "gpibP.h" -#include "plx9050.h" -#include "tms9914.h" - -enum pci_vendor_ids { - PCI_VENDOR_ID_AGILENT = 0x15bc, -}; - -enum pci_device_ids { - PCI_DEVICE_ID_82350B = 0x0b01, - PCI_DEVICE_ID_82351A = 0x1218 -}; - -enum pci_subdevice_ids { - PCI_SUBDEVICE_ID_82350A = 0x10b0, -}; - -enum pci_regions_82350a { - PLX_MEM_REGION = 0, - PLX_IO_REGION = 1, - GPIB_82350A_REGION = 2, - SRAM_82350A_REGION = 3, - BORG_82350A_REGION = 4 -}; - -enum pci_regions_82350b { - GPIB_REGION = 0, - SRAM_REGION = 1, - MISC_REGION = 2, -}; - -enum board_model { - MODEL_82350A, - MODEL_82350B, - MODEL_82351A -}; - -/* struct which defines private_data for board */ -struct agilent_82350b_priv { - struct tms9914_priv tms9914_priv; - struct pci_dev *pci_device; - void __iomem *plx_base; /* 82350a only */ - void __iomem *gpib_base; - void __iomem *sram_base; - void __iomem *misc_base; - void __iomem *borg_base; - int irq; - unsigned short card_mode_bits; - unsigned short event_status_bits; - enum board_model model; - bool using_fifos; -}; - -/* registers */ -enum agilent_82350b_gpib_registers - -{ - CARD_MODE_REG = 0x1, - CONFIG_DATA_REG = 0x2, /* 82350A specific */ - INTERRUPT_ENABLE_REG = 0x3, - EVENT_STATUS_REG = 0x4, - EVENT_ENABLE_REG = 0x5, - STREAM_STATUS_REG = 0x7, - DEBUG_RAM0_REG = 0x8, - DEBUG_RAM1_REG = 0x9, - DEBUG_RAM2_REG = 0xa, - DEBUG_RAM3_REG = 0xb, - XFER_COUNT_LO_REG = 0xc, - XFER_COUNT_MID_REG = 0xd, - XFER_COUNT_HI_REG = 0xe, - TMS9914_BASE_REG = 0x10, - INTERNAL_CONFIG_REG = 0x18, - IMR0_READ_REG = 0x19, /* read */ - T1_DELAY_REG = 0x19, /* write */ - IMR1_READ_REG = 0x1a, - ADR_READ_REG = 0x1b, - SPMR_READ_REG = 0x1c, - PPR_READ_REG = 0x1d, - CDOR_READ_REG = 0x1e, - SRAM_ACCESS_CONTROL_REG = 0x1f, -}; - -enum card_mode_bits - -{ - ACTIVE_CONTROLLER_BIT = 0x2, /* read-only */ - CM_SYSTEM_CONTROLLER_BIT = 0x8, - ENABLE_BUS_MONITOR_BIT = 0x10, - ENABLE_PCI_IRQ_BIT = 0x20, -}; - -enum interrupt_enable_bits - -{ - ENABLE_TMS9914_INTERRUPTS_BIT = 0x1, - ENABLE_BUFFER_END_INTERRUPT_BIT = 0x10, - ENABLE_TERM_COUNT_INTERRUPT_BIT = 0x20, -}; - -enum event_enable_bits - -{ - ENABLE_BUFFER_END_EVENTS_BIT = 0x10, - ENABLE_TERM_COUNT_EVENTS_BIT = 0x20, -}; - -enum event_status_bits - -{ - TMS9914_IRQ_STATUS_BIT = 0x1, - IRQ_STATUS_BIT = 0x2, - BUFFER_END_STATUS_BIT = 0x10, /* write-clear */ - TERM_COUNT_STATUS_BIT = 0x20, /* write-clear */ -}; - -enum stream_status_bits - -{ - HALTED_STATUS_BIT = 0x1, /* read */ - RESTART_STREAM_BIT = 0x1, /* write */ -}; - -enum internal_config_bits - -{ - IC_SYSTEM_CONTROLLER_BIT = 0x80, -}; - -enum sram_access_control_bits - -{ - DIRECTION_GPIB_TO_HOST = 0x20, /* transfer direction */ - ENABLE_TI_TO_SRAM = 0x40, /* enable fifo */ - ENABLE_FAST_TALKER = 0x80 /* added for 82350A (not used) */ -}; - -enum borg_bits - -{ - BORG_READY_BIT = 0x40, - BORG_DONE_BIT = 0x80 -}; - -static const int agilent_82350b_fifo_size = 0x8000; - -static inline int agilent_82350b_fifo_is_halted(struct agilent_82350b_priv *a_priv) - -{ - return readb(a_priv->gpib_base + STREAM_STATUS_REG) & HALTED_STATUS_BIT; -} - diff --git a/drivers/staging/gpib/agilent_82357a/Makefile b/drivers/staging/gpib/agilent_82357a/Makefile deleted file mode 100644 index 81a55c257a6e..000000000000 --- a/drivers/staging/gpib/agilent_82357a/Makefile +++ /dev/null @@ -1,4 +0,0 @@ - -obj-$(CONFIG_GPIB_AGILENT_82357A) += agilent_82357a.o - - diff --git a/drivers/staging/gpib/agilent_82357a/agilent_82357a.c b/drivers/staging/gpib/agilent_82357a/agilent_82357a.c deleted file mode 100644 index 77c8e549b208..000000000000 --- a/drivers/staging/gpib/agilent_82357a/agilent_82357a.c +++ /dev/null @@ -1,1691 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * driver for Agilent 82357A/B usb to gpib adapters * - * copyright : (C) 2004 by Frank Mori Hess * - ***************************************************************************/ - -#define _GNU_SOURCE - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include "agilent_82357a.h" -#include "gpibP.h" -#include "tms9914.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for Agilent 82357A/B usb adapters"); - -#define MAX_NUM_82357A_INTERFACES 128 -static struct usb_interface *agilent_82357a_driver_interfaces[MAX_NUM_82357A_INTERFACES]; -static DEFINE_MUTEX(agilent_82357a_hotplug_lock); // protect board insertion and removal - -static unsigned int agilent_82357a_update_status(struct gpib_board *board, - unsigned int clear_mask); - -static int agilent_82357a_take_control_internal(struct gpib_board *board, int synchronous); - -static void agilent_82357a_bulk_complete(struct urb *urb) -{ - struct agilent_82357a_urb_ctx *context = urb->context; - - complete(&context->complete); -} - -static void agilent_82357a_timeout_handler(struct timer_list *t) -{ - struct agilent_82357a_priv *a_priv = timer_container_of(a_priv, t, - bulk_timer); - struct agilent_82357a_urb_ctx *context = &a_priv->context; - - context->timed_out = 1; - complete(&context->complete); -} - -static int agilent_82357a_send_bulk_msg(struct agilent_82357a_priv *a_priv, void *data, - int data_length, int *actual_data_length, - int timeout_msecs) -{ - struct usb_device *usb_dev; - int retval; - unsigned int out_pipe; - struct agilent_82357a_urb_ctx *context = &a_priv->context; - - *actual_data_length = 0; - retval = mutex_lock_interruptible(&a_priv->bulk_alloc_lock); - if (retval) - return retval; - if (!a_priv->bus_interface) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -ENODEV; - } - if (a_priv->bulk_urb) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -EAGAIN; - } - a_priv->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!a_priv->bulk_urb) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -ENOMEM; - } - usb_dev = interface_to_usbdev(a_priv->bus_interface); - out_pipe = usb_sndbulkpipe(usb_dev, a_priv->bulk_out_endpoint); - init_completion(&context->complete); - context->timed_out = 0; - usb_fill_bulk_urb(a_priv->bulk_urb, usb_dev, out_pipe, data, data_length, - &agilent_82357a_bulk_complete, context); - - if (timeout_msecs) - mod_timer(&a_priv->bulk_timer, jiffies + msecs_to_jiffies(timeout_msecs)); - - retval = usb_submit_urb(a_priv->bulk_urb, GFP_KERNEL); - if (retval) { - dev_err(&usb_dev->dev, "failed to submit bulk out urb, retval=%i\n", retval); - mutex_unlock(&a_priv->bulk_alloc_lock); - goto cleanup; - } - mutex_unlock(&a_priv->bulk_alloc_lock); - if (wait_for_completion_interruptible(&context->complete)) { - retval = -ERESTARTSYS; - goto cleanup; - } - if (context->timed_out) { - retval = -ETIMEDOUT; - } else { - retval = a_priv->bulk_urb->status; - *actual_data_length = a_priv->bulk_urb->actual_length; - } -cleanup: - if (timeout_msecs) { - if (timer_pending(&a_priv->bulk_timer)) - timer_delete_sync(&a_priv->bulk_timer); - } - mutex_lock(&a_priv->bulk_alloc_lock); - if (a_priv->bulk_urb) { - usb_kill_urb(a_priv->bulk_urb); - usb_free_urb(a_priv->bulk_urb); - a_priv->bulk_urb = NULL; - } - mutex_unlock(&a_priv->bulk_alloc_lock); - return retval; -} - -static int agilent_82357a_receive_bulk_msg(struct agilent_82357a_priv *a_priv, void *data, - int data_length, int *actual_data_length, - int timeout_msecs) -{ - struct usb_device *usb_dev; - int retval; - unsigned int in_pipe; - struct agilent_82357a_urb_ctx *context = &a_priv->context; - - *actual_data_length = 0; - retval = mutex_lock_interruptible(&a_priv->bulk_alloc_lock); - if (retval) - return retval; - if (!a_priv->bus_interface) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -ENODEV; - } - if (a_priv->bulk_urb) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -EAGAIN; - } - a_priv->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!a_priv->bulk_urb) { - mutex_unlock(&a_priv->bulk_alloc_lock); - return -ENOMEM; - } - usb_dev = interface_to_usbdev(a_priv->bus_interface); - in_pipe = usb_rcvbulkpipe(usb_dev, AGILENT_82357_BULK_IN_ENDPOINT); - init_completion(&context->complete); - context->timed_out = 0; - usb_fill_bulk_urb(a_priv->bulk_urb, usb_dev, in_pipe, data, data_length, - &agilent_82357a_bulk_complete, context); - - if (timeout_msecs) - mod_timer(&a_priv->bulk_timer, jiffies + msecs_to_jiffies(timeout_msecs)); - - retval = usb_submit_urb(a_priv->bulk_urb, GFP_KERNEL); - if (retval) { - dev_err(&usb_dev->dev, "failed to submit bulk in urb, retval=%i\n", retval); - mutex_unlock(&a_priv->bulk_alloc_lock); - goto cleanup; - } - mutex_unlock(&a_priv->bulk_alloc_lock); - if (wait_for_completion_interruptible(&context->complete)) { - retval = -ERESTARTSYS; - goto cleanup; - } - if (context->timed_out) { - retval = -ETIMEDOUT; - goto cleanup; - } - retval = a_priv->bulk_urb->status; - *actual_data_length = a_priv->bulk_urb->actual_length; -cleanup: - if (timeout_msecs) - timer_delete_sync(&a_priv->bulk_timer); - - mutex_lock(&a_priv->bulk_alloc_lock); - if (a_priv->bulk_urb) { - usb_kill_urb(a_priv->bulk_urb); - usb_free_urb(a_priv->bulk_urb); - a_priv->bulk_urb = NULL; - } - mutex_unlock(&a_priv->bulk_alloc_lock); - return retval; -} - -static int agilent_82357a_receive_control_msg(struct agilent_82357a_priv *a_priv, __u8 request, - __u8 requesttype, __u16 value, __u16 index, - void *data, __u16 size, int timeout_msecs) -{ - struct usb_device *usb_dev; - int retval; - unsigned int in_pipe; - - retval = mutex_lock_interruptible(&a_priv->control_alloc_lock); - if (retval) - return retval; - if (!a_priv->bus_interface) { - mutex_unlock(&a_priv->control_alloc_lock); - return -ENODEV; - } - usb_dev = interface_to_usbdev(a_priv->bus_interface); - in_pipe = usb_rcvctrlpipe(usb_dev, AGILENT_82357_CONTROL_ENDPOINT); - retval = usb_control_msg(usb_dev, in_pipe, request, requesttype, value, index, data, - size, timeout_msecs); - mutex_unlock(&a_priv->control_alloc_lock); - return retval; -} - -static void agilent_82357a_dump_raw_block(const u8 *raw_data, int length) -{ - print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 8, 1, raw_data, length, true); -} - -static int agilent_82357a_write_registers(struct agilent_82357a_priv *a_priv, - const struct agilent_82357a_register_pairlet *writes, - int num_writes) -{ - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - int retval; - u8 *out_data, *in_data; - int out_data_length, in_data_length; - int bytes_written, bytes_read; - int i = 0; - int j; - static const int bytes_per_write = 2; - static const int header_length = 2; - static const int max_writes = 31; - - if (num_writes > max_writes) { - dev_err(&usb_dev->dev, "bug! num_writes=%i too large\n", num_writes); - return -EIO; - } - out_data_length = num_writes * bytes_per_write + header_length; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - - out_data[i++] = DATA_PIPE_CMD_WR_REGS; - out_data[i++] = num_writes; - for (j = 0; j < num_writes; j++) { - out_data[i++] = writes[j].address; - out_data[i++] = writes[j].value; - } - - retval = mutex_lock_interruptible(&a_priv->bulk_transfer_lock); - if (retval) { - kfree(out_data); - return retval; - } - retval = agilent_82357a_send_bulk_msg(a_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - mutex_unlock(&a_priv->bulk_transfer_lock); - return retval; - } - in_data_length = 0x20; - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&a_priv->bulk_transfer_lock); - return -ENOMEM; - } - retval = agilent_82357a_receive_bulk_msg(a_priv, in_data, in_data_length, - &bytes_read, 1000); - mutex_unlock(&a_priv->bulk_transfer_lock); - - if (retval) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - agilent_82357a_dump_raw_block(in_data, bytes_read); - kfree(in_data); - return -EIO; - } - if (in_data[0] != (0xff & ~DATA_PIPE_CMD_WR_REGS)) { - dev_err(&usb_dev->dev, "bulk command=0x%x != ~DATA_PIPE_CMD_WR_REGS\n", in_data[0]); - return -EIO; - } - if (in_data[1]) { - dev_err(&usb_dev->dev, "nonzero error code 0x%x in DATA_PIPE_CMD_WR_REGS response\n", - in_data[1]); - return -EIO; - } - kfree(in_data); - return 0; -} - -static int agilent_82357a_read_registers(struct agilent_82357a_priv *a_priv, - struct agilent_82357a_register_pairlet *reads, - int num_reads, int blocking) -{ - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - int retval; - u8 *out_data, *in_data; - int out_data_length, in_data_length; - int bytes_written, bytes_read; - int i = 0; - int j; - static const int header_length = 2; - static const int max_reads = 62; - - if (num_reads > max_reads) { - dev_err(&usb_dev->dev, "bug! num_reads=%i too large\n", num_reads); - return -EIO; - } - out_data_length = num_reads + header_length; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - - out_data[i++] = DATA_PIPE_CMD_RD_REGS; - out_data[i++] = num_reads; - for (j = 0; j < num_reads; j++) - out_data[i++] = reads[j].address; - - if (blocking) { - retval = mutex_lock_interruptible(&a_priv->bulk_transfer_lock); - if (retval) { - kfree(out_data); - return retval; - } - } else { - retval = mutex_trylock(&a_priv->bulk_transfer_lock); - if (retval == 0) { - kfree(out_data); - return -EAGAIN; - } - } - retval = agilent_82357a_send_bulk_msg(a_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - mutex_unlock(&a_priv->bulk_transfer_lock); - return retval; - } - in_data_length = 0x20; - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&a_priv->bulk_transfer_lock); - return -ENOMEM; - } - retval = agilent_82357a_receive_bulk_msg(a_priv, in_data, in_data_length, - &bytes_read, 10000); - mutex_unlock(&a_priv->bulk_transfer_lock); - - if (retval) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - agilent_82357a_dump_raw_block(in_data, bytes_read); - kfree(in_data); - return -EIO; - } - i = 0; - if (in_data[i++] != (0xff & ~DATA_PIPE_CMD_RD_REGS)) { - dev_err(&usb_dev->dev, "bulk command=0x%x != ~DATA_PIPE_CMD_RD_REGS\n", in_data[0]); - return -EIO; - } - if (in_data[i++]) { - dev_err(&usb_dev->dev, "nonzero error code 0x%x in DATA_PIPE_CMD_RD_REGS response\n", - in_data[1]); - return -EIO; - } - for (j = 0; j < num_reads; j++) - reads[j].value = in_data[i++]; - kfree(in_data); - return 0; -} - -static int agilent_82357a_abort(struct agilent_82357a_priv *a_priv, int flush) -{ - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - int retval = 0; - int receive_control_retval; - u16 wIndex = 0; - u8 *status_data; - static const unsigned int status_data_len = 2; - - status_data = kmalloc(status_data_len, GFP_KERNEL); - if (!status_data) - return -ENOMEM; - - if (flush) - wIndex |= XA_FLUSH; - receive_control_retval = agilent_82357a_receive_control_msg(a_priv, - agilent_82357a_control_request, - USB_DIR_IN | USB_TYPE_VENDOR | - USB_RECIP_DEVICE, XFER_ABORT, - wIndex, status_data, - status_data_len, 100); - if (receive_control_retval < 0) { - dev_err(&usb_dev->dev, "82357a_receive_control_msg() returned %i\n", - receive_control_retval); - retval = -EIO; - goto cleanup; - } - if (status_data[0] != (~XFER_ABORT & 0xff)) { - dev_err(&usb_dev->dev, "major code=0x%x != ~XFER_ABORT\n", status_data[0]); - retval = -EIO; - goto cleanup; - } - switch (status_data[1]) { - case UGP_SUCCESS: - retval = 0; - break; - case UGP_ERR_FLUSHING: - if (flush) { - retval = 0; - break; - } - fallthrough; - case UGP_ERR_FLUSHING_ALREADY: - default: - dev_err(&usb_dev->dev, "abort returned error code=0x%x\n", status_data[1]); - retval = -EIO; - break; - } - -cleanup: - kfree(status_data); - return retval; -} - -// interface functions -int agilent_82357a_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written); - -static int agilent_82357a_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *nbytes) -{ - int retval; - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - int out_data_length, in_data_length; - int bytes_written, bytes_read; - int i = 0; - u8 trailing_flags; - unsigned long start_jiffies = jiffies; - int msec_timeout; - - *nbytes = 0; - *end = 0; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - out_data_length = 0x9; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = DATA_PIPE_CMD_READ; - out_data[i++] = 0; // primary address when ARF_NO_ADDR is not set - out_data[i++] = 0; // secondary address when ARF_NO_ADDR is not set - out_data[i] = ARF_NO_ADDRESS | ARF_END_ON_EOI; - if (a_priv->eos_mode & REOS) - out_data[i] |= ARF_END_ON_EOS_CHAR; - ++i; - out_data[i++] = length & 0xff; - out_data[i++] = (length >> 8) & 0xff; - out_data[i++] = (length >> 16) & 0xff; - out_data[i++] = (length >> 24) & 0xff; - out_data[i++] = a_priv->eos_char; - msec_timeout = (board->usec_timeout + 999) / 1000; - retval = mutex_lock_interruptible(&a_priv->bulk_transfer_lock); - if (retval) { - kfree(out_data); - return retval; - } - retval = agilent_82357a_send_bulk_msg(a_priv, out_data, i, &bytes_written, msec_timeout); - kfree(out_data); - if (retval || bytes_written != i) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - mutex_unlock(&a_priv->bulk_transfer_lock); - if (retval < 0) - return retval; - return -EIO; - } - in_data_length = length + 1; - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&a_priv->bulk_transfer_lock); - return -ENOMEM; - } - if (board->usec_timeout != 0) - msec_timeout -= jiffies_to_msecs(jiffies - start_jiffies) - 1; - if (msec_timeout >= 0) { - retval = agilent_82357a_receive_bulk_msg(a_priv, in_data, in_data_length, - &bytes_read, msec_timeout); - } else { - retval = -ETIMEDOUT; - bytes_read = 0; - } - if (retval == -ETIMEDOUT) { - int extra_bytes_read; - int extra_bytes_retval; - - agilent_82357a_abort(a_priv, 1); - extra_bytes_retval = agilent_82357a_receive_bulk_msg(a_priv, in_data + bytes_read, - in_data_length - bytes_read, - &extra_bytes_read, 100); - bytes_read += extra_bytes_read; - if (extra_bytes_retval) { - dev_err(&usb_dev->dev, "extra_bytes_retval=%i, bytes_read=%i\n", - extra_bytes_retval, bytes_read); - agilent_82357a_abort(a_priv, 0); - } - } else if (retval) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - agilent_82357a_abort(a_priv, 0); - } - mutex_unlock(&a_priv->bulk_transfer_lock); - if (bytes_read > length + 1) { - bytes_read = length + 1; - dev_warn(&usb_dev->dev, "bytes_read > length? truncating"); - } - - if (bytes_read >= 1) { - memcpy(buffer, in_data, bytes_read - 1); - trailing_flags = in_data[bytes_read - 1]; - *nbytes = bytes_read - 1; - if (trailing_flags & (ATRF_EOI | ATRF_EOS)) - *end = 1; - } - kfree(in_data); - - /* - * Fix for a bug in 9914A that does not return the contents of ADSR - * when the board is in listener active state and ATN is not asserted. - * Set ATN here to obtain a valid board level ibsta - */ - agilent_82357a_take_control_internal(board, 0); - - // FIXME check trailing flags for error - return retval; -} - -static ssize_t agilent_82357a_generic_write(struct gpib_board *board, - u8 *buffer, size_t length, - int send_commands, int send_eoi, - size_t *bytes_written) -{ - int retval; - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data = NULL; - u8 *status_data = NULL; - int out_data_length; - int raw_bytes_written; - int i = 0, j; - int msec_timeout; - unsigned short bsr, adsr; - struct agilent_82357a_register_pairlet read_reg; - - *bytes_written = 0; - if (!a_priv->bus_interface) - return -ENODEV; - - usb_dev = interface_to_usbdev(a_priv->bus_interface); - out_data_length = length + 0x8; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = DATA_PIPE_CMD_WRITE; - out_data[i++] = 0; // primary address when AWF_NO_ADDRESS is not set - out_data[i++] = 0; // secondary address when AWF_NO_ADDRESS is not set - out_data[i] = AWF_NO_ADDRESS | AWF_NO_FAST_TALKER_FIRST_BYTE; - if (send_commands) - out_data[i] |= AWF_ATN | AWF_NO_FAST_TALKER; - if (send_eoi) - out_data[i] |= AWF_SEND_EOI; - ++i; - out_data[i++] = length & 0xff; - out_data[i++] = (length >> 8) & 0xff; - out_data[i++] = (length >> 16) & 0xff; - out_data[i++] = (length >> 24) & 0xff; - for (j = 0; j < length; j++) - out_data[i++] = buffer[j]; - - clear_bit(AIF_WRITE_COMPLETE_BN, &a_priv->interrupt_flags); - - msec_timeout = (board->usec_timeout + 999) / 1000; - retval = mutex_lock_interruptible(&a_priv->bulk_transfer_lock); - if (retval) { - kfree(out_data); - return retval; - } - retval = agilent_82357a_send_bulk_msg(a_priv, out_data, i, &raw_bytes_written, - msec_timeout); - kfree(out_data); - if (retval || raw_bytes_written != i) { - agilent_82357a_abort(a_priv, 0); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, raw_bytes_written=%i, i=%i\n", - retval, raw_bytes_written, i); - mutex_unlock(&a_priv->bulk_transfer_lock); - if (retval < 0) - return retval; - return -EIO; - } - - retval = wait_event_interruptible(board->wait, - test_bit(AIF_WRITE_COMPLETE_BN, - &a_priv->interrupt_flags) || - test_bit(TIMO_NUM, &board->status)); - if (retval) { - dev_dbg(&usb_dev->dev, "wait write complete interrupted\n"); - agilent_82357a_abort(a_priv, 0); - mutex_unlock(&a_priv->bulk_transfer_lock); - return -ERESTARTSYS; - } - - if (test_bit(AIF_WRITE_COMPLETE_BN, &a_priv->interrupt_flags) == 0) { - dev_dbg(&usb_dev->dev, "write timed out ibs %i, tmo %i\n", - test_bit(TIMO_NUM, &board->status), msec_timeout); - - agilent_82357a_abort(a_priv, 0); - - mutex_unlock(&a_priv->bulk_transfer_lock); - - read_reg.address = BSR; - retval = agilent_82357a_read_registers(a_priv, &read_reg, 1, 1); - if (retval) { - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return -ETIMEDOUT; - } - - bsr = read_reg.value; - dev_dbg(&usb_dev->dev, "write aborted bsr 0x%x\n", bsr); - - if (send_commands) {/* check for no listeners */ - if ((bsr & BSR_ATN_BIT) && !(bsr & (BSR_NDAC_BIT | BSR_NRFD_BIT))) { - dev_dbg(&usb_dev->dev, "No listener on command\n"); - clear_bit(TIMO_NUM, &board->status); - return -ENOTCONN; // no listener on bus - } - } else { - read_reg.address = ADSR; - retval = agilent_82357a_read_registers(a_priv, &read_reg, 1, 1); - if (retval) { - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return -ETIMEDOUT; - } - adsr = read_reg.value; - if ((adsr & HR_TA) && !(bsr & (BSR_NDAC_BIT | BSR_NRFD_BIT))) { - dev_dbg(&usb_dev->dev, "No listener on write\n"); - clear_bit(TIMO_NUM, &board->status); - return -ECOMM; - } - } - - return -ETIMEDOUT; - } - - status_data = kmalloc(STATUS_DATA_LEN, GFP_KERNEL); - if (!status_data) { - mutex_unlock(&a_priv->bulk_transfer_lock); - return -ENOMEM; - } - - retval = agilent_82357a_receive_control_msg(a_priv, agilent_82357a_control_request, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - XFER_STATUS, 0, status_data, STATUS_DATA_LEN, - 100); - mutex_unlock(&a_priv->bulk_transfer_lock); - if (retval < 0) { - dev_err(&usb_dev->dev, "receive_control_msg() returned %i\n", retval); - kfree(status_data); - return -EIO; - } - *bytes_written = (u32)status_data[2]; - *bytes_written |= (u32)status_data[3] << 8; - *bytes_written |= (u32)status_data[4] << 16; - *bytes_written |= (u32)status_data[5] << 24; - - kfree(status_data); - return 0; -} - -static int agilent_82357a_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) -{ - return agilent_82357a_generic_write(board, buffer, length, 0, send_eoi, bytes_written); -} - -int agilent_82357a_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - return agilent_82357a_generic_write(board, buffer, length, 1, 0, bytes_written); -} - -int agilent_82357a_take_control_internal(struct gpib_board *board, int synchronous) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - struct agilent_82357a_register_pairlet write; - int retval; - - write.address = AUXCR; - if (synchronous) - write.value = AUX_TCS; - else - write.value = AUX_TCA; - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - - return retval; -} - -static int agilent_82357a_take_control(struct gpib_board *board, int synchronous) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - const int timeout = 10; - int i; - - if (!a_priv->bus_interface) - return -ENODEV; - -/* - * It looks like the 9914 does not handle tcs properly. - * See comment above tms9914_take_control_workaround() in - * drivers/gpib/tms9914/tms9914_aux.c - */ - if (synchronous) - return -ETIMEDOUT; - - agilent_82357a_take_control_internal(board, synchronous); - // busy wait until ATN is asserted - for (i = 0; i < timeout; ++i) { - agilent_82357a_update_status(board, 0); - if (test_bit(ATN_NUM, &board->status)) - break; - udelay(1); - } - if (i == timeout) - return -ETIMEDOUT; - return 0; -} - -static int agilent_82357a_go_to_standby(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet write; - int retval; - - if (!a_priv->bus_interface) - return -ENODEV; - - usb_dev = interface_to_usbdev(a_priv->bus_interface); - write.address = AUXCR; - write.value = AUX_GTS; - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return 0; -} - -static int agilent_82357a_request_system_control(struct gpib_board *board, int request_control) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet writes[2]; - int retval; - int i = 0; - - if (!a_priv->bus_interface) - return -ENODEV; - - usb_dev = interface_to_usbdev(a_priv->bus_interface); - /* 82357B needs bit to be set in 9914 AUXCR register */ - writes[i].address = AUXCR; - if (request_control) { - writes[i].value = AUX_RQC; - a_priv->hw_control_bits |= SYSTEM_CONTROLLER; - } else { - return -EINVAL; - } - ++i; - writes[i].address = HW_CONTROL; - writes[i].value = a_priv->hw_control_bits; - ++i; - retval = agilent_82357a_write_registers(a_priv, writes, i); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return retval; -} - -static void agilent_82357a_interface_clear(struct gpib_board *board, int assert) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet write; - int retval; - - if (!a_priv->bus_interface) - return; // -ENODEV; - - usb_dev = interface_to_usbdev(a_priv->bus_interface); - write.address = AUXCR; - write.value = AUX_SIC; - if (assert) { - write.value |= AUX_CS; - a_priv->is_cic = 1; - } - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); -} - -static void agilent_82357a_remote_enable(struct gpib_board *board, int enable) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet write; - int retval; - - if (!a_priv->bus_interface) - return; //-ENODEV; - - usb_dev = interface_to_usbdev(a_priv->bus_interface); - write.address = AUXCR; - write.value = AUX_SRE; - if (enable) - write.value |= AUX_CS; - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - a_priv->ren_state = enable; - return;// 0; -} - -static int agilent_82357a_enable_eos(struct gpib_board *board, u8 eos_byte, - int compare_8_bits) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - - if (!a_priv->bus_interface) - return -ENODEV; - if (compare_8_bits == 0) - return -EOPNOTSUPP; - - a_priv->eos_char = eos_byte; - a_priv->eos_mode = REOS | BIN; - return 0; -} - -static void agilent_82357a_disable_eos(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - - a_priv->eos_mode &= ~REOS; -} - -static unsigned int agilent_82357a_update_status(struct gpib_board *board, - unsigned int clear_mask) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet address_status, bus_status; - int retval; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - board->status &= ~clear_mask; - if (a_priv->is_cic) - set_bit(CIC_NUM, &board->status); - else - clear_bit(CIC_NUM, &board->status); - address_status.address = ADSR; - retval = agilent_82357a_read_registers(a_priv, &address_status, 1, 0); - if (retval) { - if (retval != -EAGAIN) - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return board->status; - } - // check for remote/local - if (address_status.value & HR_REM) - set_bit(REM_NUM, &board->status); - else - clear_bit(REM_NUM, &board->status); - // check for lockout - if (address_status.value & HR_LLO) - set_bit(LOK_NUM, &board->status); - else - clear_bit(LOK_NUM, &board->status); - // check for ATN - if (address_status.value & HR_ATN) - set_bit(ATN_NUM, &board->status); - else - clear_bit(ATN_NUM, &board->status); - // check for talker/listener addressed - if (address_status.value & HR_TA) - set_bit(TACS_NUM, &board->status); - else - clear_bit(TACS_NUM, &board->status); - if (address_status.value & HR_LA) - set_bit(LACS_NUM, &board->status); - else - clear_bit(LACS_NUM, &board->status); - - bus_status.address = BSR; - retval = agilent_82357a_read_registers(a_priv, &bus_status, 1, 0); - if (retval) { - if (retval != -EAGAIN) - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return board->status; - } - if (bus_status.value & BSR_SRQ_BIT) - set_bit(SRQI_NUM, &board->status); - else - clear_bit(SRQI_NUM, &board->status); - - return board->status; -} - -static int agilent_82357a_primary_address(struct gpib_board *board, unsigned int address) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - struct agilent_82357a_register_pairlet write; - int retval; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - // put primary address in address0 - write.address = ADR; - write.value = address & ADDRESS_MASK; - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return retval; - } - return retval; -} - -static int agilent_82357a_secondary_address(struct gpib_board *board, - unsigned int address, int enable) -{ - if (enable) - return -EOPNOTSUPP; - return 0; -} - -static int agilent_82357a_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet writes[2]; - struct agilent_82357a_register_pairlet read; - int retval; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - // execute parallel poll - writes[0].address = AUXCR; - writes[0].value = AUX_CS | AUX_RPP; - writes[1].address = HW_CONTROL; - writes[1].value = a_priv->hw_control_bits & ~NOT_PARALLEL_POLL; - retval = agilent_82357a_write_registers(a_priv, writes, 2); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return retval; - } - udelay(2); // silly, since usb write will take way longer - read.address = CPTR; - retval = agilent_82357a_read_registers(a_priv, &read, 1, 1); - if (retval) { - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return retval; - } - *result = read.value; - // clear parallel poll state - writes[0].address = HW_CONTROL; - writes[0].value = a_priv->hw_control_bits | NOT_PARALLEL_POLL; - writes[1].address = AUXCR; - writes[1].value = AUX_RPP; - retval = agilent_82357a_write_registers(a_priv, writes, 2); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return retval; - } - return 0; -} - -static void agilent_82357a_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - // board can only be system controller - return;// 0; -} - -static void agilent_82357a_parallel_poll_response(struct gpib_board *board, int ist) -{ - // board can only be system controller - return;// 0; -} - -static void agilent_82357a_serial_poll_response(struct gpib_board *board, u8 status) -{ - // board can only be system controller - return;// 0; -} - -static u8 agilent_82357a_serial_poll_status(struct gpib_board *board) -{ - // board can only be system controller - return 0; -} - -static void agilent_82357a_return_to_local(struct gpib_board *board) -{ - // board can only be system controller - return;// 0; -} - -static int agilent_82357a_line_status(const struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet bus_status; - int retval; - int status = VALID_ALL; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - bus_status.address = BSR; - retval = agilent_82357a_read_registers(a_priv, &bus_status, 1, 0); - if (retval) { - if (retval != -EAGAIN) - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return retval; - } - if (bus_status.value & BSR_REN_BIT) - status |= BUS_REN; - if (bus_status.value & BSR_IFC_BIT) - status |= BUS_IFC; - if (bus_status.value & BSR_SRQ_BIT) - status |= BUS_SRQ; - if (bus_status.value & BSR_EOI_BIT) - status |= BUS_EOI; - if (bus_status.value & BSR_NRFD_BIT) - status |= BUS_NRFD; - if (bus_status.value & BSR_NDAC_BIT) - status |= BUS_NDAC; - if (bus_status.value & BSR_DAV_BIT) - status |= BUS_DAV; - if (bus_status.value & BSR_ATN_BIT) - status |= BUS_ATN; - return status; -} - -static unsigned short nanosec_to_fast_talker_bits(unsigned int *nanosec) -{ - static const int nanosec_per_bit = 21; - static const int max_value = 0x72; - static const int min_value = 0x11; - unsigned short bits; - - bits = (*nanosec + nanosec_per_bit / 2) / nanosec_per_bit; - if (bits < min_value) - bits = min_value; - if (bits > max_value) - bits = max_value; - *nanosec = bits * nanosec_per_bit; - return bits; -} - -static int agilent_82357a_t1_delay(struct gpib_board *board, unsigned int nanosec) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - struct agilent_82357a_register_pairlet write; - int retval; - - if (!a_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(a_priv->bus_interface); - write.address = FAST_TALKER_T1; - write.value = nanosec_to_fast_talker_bits(&nanosec); - retval = agilent_82357a_write_registers(a_priv, &write, 1); - if (retval) - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return nanosec; -} - -static void agilent_82357a_interrupt_complete(struct urb *urb) -{ - struct gpib_board *board = urb->context; - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - int retval; - u8 *transfer_buffer = urb->transfer_buffer; - unsigned long interrupt_flags; - - switch (urb->status) { - /* success */ - case 0: - break; - /* unlinked, don't resubmit */ - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - return; - default: /* other error, resubmit */ - retval = usb_submit_urb(a_priv->interrupt_urb, GFP_ATOMIC); - if (retval) - dev_err(&usb_dev->dev, "failed to resubmit interrupt urb\n"); - return; - } - - interrupt_flags = transfer_buffer[0]; - if (test_bit(AIF_READ_COMPLETE_BN, &interrupt_flags)) - set_bit(AIF_READ_COMPLETE_BN, &a_priv->interrupt_flags); - if (test_bit(AIF_WRITE_COMPLETE_BN, &interrupt_flags)) - set_bit(AIF_WRITE_COMPLETE_BN, &a_priv->interrupt_flags); - if (test_bit(AIF_SRQ_BN, &interrupt_flags)) - set_bit(SRQI_NUM, &board->status); - - wake_up_interruptible(&board->wait); - - retval = usb_submit_urb(a_priv->interrupt_urb, GFP_ATOMIC); - if (retval) - dev_err(&usb_dev->dev, "failed to resubmit interrupt urb\n"); -} - -static int agilent_82357a_setup_urbs(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev; - int int_pipe; - int retval; - - retval = mutex_lock_interruptible(&a_priv->interrupt_alloc_lock); - if (retval) - return retval; - if (!a_priv->bus_interface) { - retval = -ENODEV; - goto setup_exit; - } - - a_priv->interrupt_buffer = kmalloc(INTERRUPT_BUF_LEN, GFP_KERNEL); - if (!a_priv->interrupt_buffer) { - retval = -ENOMEM; - goto setup_exit; - } - a_priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!a_priv->interrupt_urb) { - retval = -ENOMEM; - goto setup_exit; - } - usb_dev = interface_to_usbdev(a_priv->bus_interface); - int_pipe = usb_rcvintpipe(usb_dev, a_priv->interrupt_in_endpoint); - usb_fill_int_urb(a_priv->interrupt_urb, usb_dev, int_pipe, a_priv->interrupt_buffer, - INTERRUPT_BUF_LEN, &agilent_82357a_interrupt_complete, board, 1); - retval = usb_submit_urb(a_priv->interrupt_urb, GFP_KERNEL); - if (retval) { - usb_free_urb(a_priv->interrupt_urb); - a_priv->interrupt_urb = NULL; - dev_err(&usb_dev->dev, "failed to submit first interrupt urb, retval=%i\n", retval); - goto setup_exit; - } - mutex_unlock(&a_priv->interrupt_alloc_lock); - return 0; - -setup_exit: - kfree(a_priv->interrupt_buffer); - mutex_unlock(&a_priv->interrupt_alloc_lock); - return retval; -} - -static void agilent_82357a_cleanup_urbs(struct agilent_82357a_priv *a_priv) -{ - if (a_priv && a_priv->bus_interface) { - if (a_priv->interrupt_urb) - usb_kill_urb(a_priv->interrupt_urb); - if (a_priv->bulk_urb) - usb_kill_urb(a_priv->bulk_urb); - } -}; - -static void agilent_82357a_release_urbs(struct agilent_82357a_priv *a_priv) -{ - if (a_priv) { - usb_free_urb(a_priv->interrupt_urb); - a_priv->interrupt_urb = NULL; - kfree(a_priv->interrupt_buffer); - } -} - -static int agilent_82357a_allocate_private(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv; - - board->private_data = kzalloc(sizeof(struct agilent_82357a_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - a_priv = board->private_data; - mutex_init(&a_priv->bulk_transfer_lock); - mutex_init(&a_priv->bulk_alloc_lock); - mutex_init(&a_priv->control_alloc_lock); - mutex_init(&a_priv->interrupt_alloc_lock); - return 0; -} - -static void agilent_82357a_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -#define INIT_NUM_REG_WRITES 18 -static int agilent_82357a_init(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - struct agilent_82357a_register_pairlet hw_control; - struct agilent_82357a_register_pairlet writes[INIT_NUM_REG_WRITES]; - int retval; - unsigned int nanosec; - - writes[0].address = LED_CONTROL; - writes[0].value = FAIL_LED_ON; - writes[1].address = RESET_TO_POWERUP; - writes[1].value = RESET_SPACEBALL; - retval = agilent_82357a_write_registers(a_priv, writes, 2); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return -EIO; - } - set_current_state(TASK_INTERRUPTIBLE); - if (schedule_timeout(usec_to_jiffies(2000))) - return -ERESTARTSYS; - writes[0].address = AUXCR; - writes[0].value = AUX_NBAF; - writes[1].address = AUXCR; - writes[1].value = AUX_HLDE; - writes[2].address = AUXCR; - writes[2].value = AUX_TON; - writes[3].address = AUXCR; - writes[3].value = AUX_LON; - writes[4].address = AUXCR; - writes[4].value = AUX_RSV2; - writes[5].address = AUXCR; - writes[5].value = AUX_INVAL; - writes[6].address = AUXCR; - writes[6].value = AUX_RPP; - writes[7].address = AUXCR; - writes[7].value = AUX_STDL; - writes[8].address = AUXCR; - writes[8].value = AUX_VSTDL; - writes[9].address = FAST_TALKER_T1; - nanosec = board->t1_nano_sec; - writes[9].value = nanosec_to_fast_talker_bits(&nanosec); - board->t1_nano_sec = nanosec; - writes[10].address = ADR; - writes[10].value = board->pad & ADDRESS_MASK; - writes[11].address = PPR; - writes[11].value = 0; - writes[12].address = SPMR; - writes[12].value = 0; - writes[13].address = PROTOCOL_CONTROL; - writes[13].value = WRITE_COMPLETE_INTERRUPT_EN; - writes[14].address = IMR0; - writes[14].value = HR_BOIE | HR_BIIE; - writes[15].address = IMR1; - writes[15].value = HR_SRQIE; - // turn off reset state - writes[16].address = AUXCR; - writes[16].value = AUX_CHIP_RESET; - writes[17].address = LED_CONTROL; - writes[17].value = FIRMWARE_LED_CONTROL; - retval = agilent_82357a_write_registers(a_priv, writes, INIT_NUM_REG_WRITES); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return -EIO; - } - hw_control.address = HW_CONTROL; - retval = agilent_82357a_read_registers(a_priv, &hw_control, 1, 1); - if (retval) { - dev_err(&usb_dev->dev, "read_registers() returned error\n"); - return -EIO; - } - a_priv->hw_control_bits = (hw_control.value & ~0x7) | NOT_TI_RESET | NOT_PARALLEL_POLL; - - return 0; -} - -static inline int agilent_82357a_device_match(struct usb_interface *interface, - const struct gpib_board_config *config) -{ - struct usb_device * const usbdev = interface_to_usbdev(interface); - - if (gpib_match_device_path(&interface->dev, config->device_path) == 0) - return 0; - if (config->serial_number && - strcmp(usbdev->serial, config->serial_number) != 0) - return 0; - - return 1; -} - -static int agilent_82357a_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - int retval; - int i; - unsigned int product_id; - struct agilent_82357a_priv *a_priv; - struct usb_device *usb_dev; - - if (mutex_lock_interruptible(&agilent_82357a_hotplug_lock)) - return -ERESTARTSYS; - - retval = agilent_82357a_allocate_private(board); - if (retval < 0) { - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; - } - a_priv = board->private_data; - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) { - if (agilent_82357a_driver_interfaces[i] && - !usb_get_intfdata(agilent_82357a_driver_interfaces[i]) && - agilent_82357a_device_match(agilent_82357a_driver_interfaces[i], config)) { - a_priv->bus_interface = agilent_82357a_driver_interfaces[i]; - usb_set_intfdata(agilent_82357a_driver_interfaces[i], board); - usb_dev = interface_to_usbdev(a_priv->bus_interface); - break; - } - } - if (i == MAX_NUM_82357A_INTERFACES) { - dev_err(board->gpib_dev, - "No supported adapters found, have you loaded its firmware?\n"); - retval = -ENODEV; - goto attach_fail; - } - product_id = le16_to_cpu(interface_to_usbdev(a_priv->bus_interface)->descriptor.idProduct); - switch (product_id) { - case USB_DEVICE_ID_AGILENT_82357A: - a_priv->bulk_out_endpoint = AGILENT_82357A_BULK_OUT_ENDPOINT; - a_priv->interrupt_in_endpoint = AGILENT_82357A_INTERRUPT_IN_ENDPOINT; - break; - case USB_DEVICE_ID_AGILENT_82357B: - a_priv->bulk_out_endpoint = AGILENT_82357B_BULK_OUT_ENDPOINT; - a_priv->interrupt_in_endpoint = AGILENT_82357B_INTERRUPT_IN_ENDPOINT; - break; - default: - dev_err(&usb_dev->dev, "bug, unhandled product_id in switch?\n"); - retval = -EIO; - goto attach_fail; - } - - retval = agilent_82357a_setup_urbs(board); - if (retval < 0) - goto attach_fail; - - timer_setup(&a_priv->bulk_timer, agilent_82357a_timeout_handler, 0); - - board->t1_nano_sec = 800; - - retval = agilent_82357a_init(board); - - if (retval < 0) { - agilent_82357a_cleanup_urbs(a_priv); - agilent_82357a_release_urbs(a_priv); - goto attach_fail; - } - - dev_info(&usb_dev->dev, "bus %d dev num %d attached to gpib%d, interface %i\n", - usb_dev->bus->busnum, usb_dev->devnum, board->minor, i); - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; - -attach_fail: - agilent_82357a_free_private(board); - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; -} - -static int agilent_82357a_go_idle(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(a_priv->bus_interface); - struct agilent_82357a_register_pairlet writes[0x20]; - int retval; - - // turn on tms9914 reset state - writes[0].address = AUXCR; - writes[0].value = AUX_CS | AUX_CHIP_RESET; - a_priv->hw_control_bits &= ~NOT_TI_RESET; - writes[1].address = HW_CONTROL; - writes[1].value = a_priv->hw_control_bits; - writes[2].address = PROTOCOL_CONTROL; - writes[2].value = 0; - writes[3].address = IMR0; - writes[3].value = 0; - writes[4].address = IMR1; - writes[4].value = 0; - writes[5].address = LED_CONTROL; - writes[5].value = 0; - retval = agilent_82357a_write_registers(a_priv, writes, 6); - if (retval) { - dev_err(&usb_dev->dev, "write_registers() returned error\n"); - return -EIO; - } - return 0; -} - -static void agilent_82357a_detach(struct gpib_board *board) -{ - struct agilent_82357a_priv *a_priv; - - mutex_lock(&agilent_82357a_hotplug_lock); - - a_priv = board->private_data; - if (a_priv) { - if (a_priv->bus_interface) { - agilent_82357a_go_idle(board); - usb_set_intfdata(a_priv->bus_interface, NULL); - } - mutex_lock(&a_priv->control_alloc_lock); - mutex_lock(&a_priv->bulk_alloc_lock); - mutex_lock(&a_priv->interrupt_alloc_lock); - agilent_82357a_cleanup_urbs(a_priv); - agilent_82357a_release_urbs(a_priv); - agilent_82357a_free_private(board); - } - mutex_unlock(&agilent_82357a_hotplug_lock); -} - -static struct gpib_interface agilent_82357a_gpib_interface = { - .name = "agilent_82357a", - .attach = agilent_82357a_attach, - .detach = agilent_82357a_detach, - .read = agilent_82357a_read, - .write = agilent_82357a_write, - .command = agilent_82357a_command, - .take_control = agilent_82357a_take_control, - .go_to_standby = agilent_82357a_go_to_standby, - .request_system_control = agilent_82357a_request_system_control, - .interface_clear = agilent_82357a_interface_clear, - .remote_enable = agilent_82357a_remote_enable, - .enable_eos = agilent_82357a_enable_eos, - .disable_eos = agilent_82357a_disable_eos, - .parallel_poll = agilent_82357a_parallel_poll, - .parallel_poll_configure = agilent_82357a_parallel_poll_configure, - .parallel_poll_response = agilent_82357a_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = agilent_82357a_line_status, - .update_status = agilent_82357a_update_status, - .primary_address = agilent_82357a_primary_address, - .secondary_address = agilent_82357a_secondary_address, - .serial_poll_response = agilent_82357a_serial_poll_response, - .serial_poll_status = agilent_82357a_serial_poll_status, - .t1_delay = agilent_82357a_t1_delay, - .return_to_local = agilent_82357a_return_to_local, - .no_7_bit_eos = 1, - .skip_check_for_command_acceptors = 1 -}; - -// Table with the USB-devices: just now only testing IDs -static struct usb_device_id agilent_82357a_driver_device_table[] = { - {USB_DEVICE(USB_VENDOR_ID_AGILENT, USB_DEVICE_ID_AGILENT_82357A)}, - {USB_DEVICE(USB_VENDOR_ID_AGILENT, USB_DEVICE_ID_AGILENT_82357B)}, - {} /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, agilent_82357a_driver_device_table); - -static int agilent_82357a_driver_probe(struct usb_interface *interface, - const struct usb_device_id *id) -{ - int i; - char *path; - static const int path_length = 1024; - struct usb_device *usb_dev; - - if (mutex_lock_interruptible(&agilent_82357a_hotplug_lock)) - return -ERESTARTSYS; - usb_dev = usb_get_dev(interface_to_usbdev(interface)); - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) { - if (!agilent_82357a_driver_interfaces[i]) { - agilent_82357a_driver_interfaces[i] = interface; - usb_set_intfdata(interface, NULL); - dev_dbg(&usb_dev->dev, "set bus interface %i to address 0x%p\n", - i, interface); - break; - } - } - if (i == MAX_NUM_82357A_INTERFACES) { - usb_put_dev(usb_dev); - mutex_unlock(&agilent_82357a_hotplug_lock); - dev_err(&usb_dev->dev, "out of space in agilent_82357a_driver_interfaces[]\n"); - return -1; - } - path = kmalloc(path_length, GFP_KERNEL); - if (!path) { - usb_put_dev(usb_dev); - mutex_unlock(&agilent_82357a_hotplug_lock); - return -ENOMEM; - } - usb_make_path(usb_dev, path, path_length); - dev_info(&usb_dev->dev, "probe succeeded for path: %s\n", path); - kfree(path); - mutex_unlock(&agilent_82357a_hotplug_lock); - return 0; -} - -static void agilent_82357a_driver_disconnect(struct usb_interface *interface) -{ - int i; - struct usb_device *usb_dev = interface_to_usbdev(interface); - - mutex_lock(&agilent_82357a_hotplug_lock); - - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) { - if (agilent_82357a_driver_interfaces[i] == interface) { - struct gpib_board *board = usb_get_intfdata(interface); - - if (board) { - struct agilent_82357a_priv *a_priv = board->private_data; - - if (a_priv) { - mutex_lock(&a_priv->control_alloc_lock); - mutex_lock(&a_priv->bulk_alloc_lock); - mutex_lock(&a_priv->interrupt_alloc_lock); - agilent_82357a_cleanup_urbs(a_priv); - a_priv->bus_interface = NULL; - mutex_unlock(&a_priv->interrupt_alloc_lock); - mutex_unlock(&a_priv->bulk_alloc_lock); - mutex_unlock(&a_priv->control_alloc_lock); - } - } - agilent_82357a_driver_interfaces[i] = NULL; - break; - } - } - if (i == MAX_NUM_82357A_INTERFACES) - dev_err(&usb_dev->dev, "unable to find interface - bug?\n"); - usb_put_dev(usb_dev); - - mutex_unlock(&agilent_82357a_hotplug_lock); -} - -static int agilent_82357a_driver_suspend(struct usb_interface *interface, pm_message_t message) -{ - int i, retval; - struct usb_device *usb_dev = interface_to_usbdev(interface); - - mutex_lock(&agilent_82357a_hotplug_lock); - - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) { - if (agilent_82357a_driver_interfaces[i] == interface) { - struct gpib_board *board = usb_get_intfdata(interface); - - if (board) { - struct agilent_82357a_priv *a_priv = board->private_data; - - if (a_priv) { - agilent_82357a_abort(a_priv, 0); - agilent_82357a_abort(a_priv, 0); - retval = agilent_82357a_go_idle(board); - if (retval) { - dev_err(&usb_dev->dev, "failed to go idle, retval=%i\n", - retval); - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; - } - mutex_lock(&a_priv->interrupt_alloc_lock); - agilent_82357a_cleanup_urbs(a_priv); - mutex_unlock(&a_priv->interrupt_alloc_lock); - dev_dbg(&usb_dev->dev, - "bus %d dev num %d gpib %d, interface %i suspended\n", - usb_dev->bus->busnum, usb_dev->devnum, - board->minor, i); - } - } - break; - } - } - - mutex_unlock(&agilent_82357a_hotplug_lock); - - return 0; -} - -static int agilent_82357a_driver_resume(struct usb_interface *interface) -{ - struct usb_device *usb_dev = interface_to_usbdev(interface); - struct gpib_board *board; - int i, retval = 0; - - mutex_lock(&agilent_82357a_hotplug_lock); - - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) { - if (agilent_82357a_driver_interfaces[i] == interface) { - board = usb_get_intfdata(interface); - if (board) - break; - } - } - if (i == MAX_NUM_82357A_INTERFACES) { - retval = -ENOENT; - goto resume_exit; - } - - struct agilent_82357a_priv *a_priv = board->private_data; - - if (a_priv) { - if (a_priv->interrupt_urb) { - mutex_lock(&a_priv->interrupt_alloc_lock); - retval = usb_submit_urb(a_priv->interrupt_urb, GFP_KERNEL); - if (retval) { - dev_err(&usb_dev->dev, "failed to resubmit interrupt urb in resume, retval=%i\n", - retval); - mutex_unlock(&a_priv->interrupt_alloc_lock); - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; - } - mutex_unlock(&a_priv->interrupt_alloc_lock); - } - retval = agilent_82357a_init(board); - if (retval < 0) { - mutex_unlock(&agilent_82357a_hotplug_lock); - return retval; - } - // set/unset system controller - retval = agilent_82357a_request_system_control(board, board->master); - // toggle ifc if master - if (board->master) { - agilent_82357a_interface_clear(board, 1); - usleep_range(200, 250); - agilent_82357a_interface_clear(board, 0); - } - // assert/unassert REN - agilent_82357a_remote_enable(board, a_priv->ren_state); - - dev_dbg(&usb_dev->dev, - "bus %d dev num %d gpib%d, interface %i resumed\n", - usb_dev->bus->busnum, usb_dev->devnum, board->minor, i); - } - -resume_exit: - mutex_unlock(&agilent_82357a_hotplug_lock); - - return retval; -} - -static struct usb_driver agilent_82357a_bus_driver = { - .name = DRV_NAME, - .probe = agilent_82357a_driver_probe, - .disconnect = agilent_82357a_driver_disconnect, - .suspend = agilent_82357a_driver_suspend, - .resume = agilent_82357a_driver_resume, - .id_table = agilent_82357a_driver_device_table, -}; - -static int __init agilent_82357a_init_module(void) -{ - int i; - int ret; - - for (i = 0; i < MAX_NUM_82357A_INTERFACES; ++i) - agilent_82357a_driver_interfaces[i] = NULL; - - ret = usb_register(&agilent_82357a_bus_driver); - if (ret) { - pr_err("usb_register failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&agilent_82357a_gpib_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - usb_deregister(&agilent_82357a_bus_driver); - return ret; - } - - return 0; -} - -static void __exit agilent_82357a_exit_module(void) -{ - gpib_unregister_driver(&agilent_82357a_gpib_interface); - usb_deregister(&agilent_82357a_bus_driver); -} - -module_init(agilent_82357a_init_module); -module_exit(agilent_82357a_exit_module); diff --git a/drivers/staging/gpib/agilent_82357a/agilent_82357a.h b/drivers/staging/gpib/agilent_82357a/agilent_82357a.h deleted file mode 100644 index 33ac558e5552..000000000000 --- a/drivers/staging/gpib/agilent_82357a/agilent_82357a.h +++ /dev/null @@ -1,182 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2004 by Frank Mori Hess * - ***************************************************************************/ - -#include <linux/kernel.h> -#include <linux/mutex.h> -#include <linux/completion.h> -#include <linux/usb.h> -#include <linux/timer.h> -#include <linux/compiler_attributes.h> -#include "gpibP.h" -#include "tms9914.h" - -enum usb_vendor_ids { - USB_VENDOR_ID_AGILENT = 0x0957 -}; - -enum usb_device_ids { - USB_DEVICE_ID_AGILENT_82357A = 0x0107, - USB_DEVICE_ID_AGILENT_82357A_PREINIT = 0x0007, // device id before firmware is loaded - USB_DEVICE_ID_AGILENT_82357B = 0x0718, // device id before firmware is loaded - USB_DEVICE_ID_AGILENT_82357B_PREINIT = 0x0518, // device id before firmware is loaded -}; - -enum endpoint_addresses { - AGILENT_82357_CONTROL_ENDPOINT = 0x0, - AGILENT_82357_BULK_IN_ENDPOINT = 0x2, - AGILENT_82357A_BULK_OUT_ENDPOINT = 0x4, - AGILENT_82357A_INTERRUPT_IN_ENDPOINT = 0x6, - AGILENT_82357B_BULK_OUT_ENDPOINT = 0x6, - AGILENT_82357B_INTERRUPT_IN_ENDPOINT = 0x8, -}; - -enum bulk_commands { - DATA_PIPE_CMD_WRITE = 0x1, - DATA_PIPE_CMD_READ = 0x3, - DATA_PIPE_CMD_WR_REGS = 0x4, - DATA_PIPE_CMD_RD_REGS = 0x5 -}; - -enum agilent_82357a_read_flags { - ARF_END_ON_EOI = 0x1, - ARF_NO_ADDRESS = 0x2, - ARF_END_ON_EOS_CHAR = 0x4, - ARF_SPOLL = 0x8 -}; - -enum agilent_82357a_trailing_read_flags { - ATRF_EOI = 0x1, - ATRF_ATN = 0x2, - ATRF_IFC = 0x4, - ATRF_EOS = 0x8, - ATRF_ABORT = 0x10, - ATRF_COUNT = 0x20, - ATRF_DEAD_BUS = 0x40, - ATRF_UNADDRESSED = 0x80 -}; - -enum agilent_82357a_write_flags { - AWF_SEND_EOI = 0x1, - AWF_NO_FAST_TALKER_FIRST_BYTE = 0x2, - AWF_NO_FAST_TALKER = 0x4, - AWF_NO_ADDRESS = 0x8, - AWF_ATN = 0x10, - AWF_SEPARATE_HEADER = 0x80 -}; - -enum agilent_82357a_interrupt_flag_bit_numbers { - AIF_SRQ_BN = 0, - AIF_WRITE_COMPLETE_BN = 1, - AIF_READ_COMPLETE_BN = 2, -}; - -enum agilent_82357_error_codes { - UGP_SUCCESS = 0, - UGP_ERR_INVALID_CMD = 1, - UGP_ERR_INVALID_PARAM = 2, - UGP_ERR_INVALID_REG = 3, - UGP_ERR_GPIB_READ = 4, - UGP_ERR_GPIB_WRITE = 5, - UGP_ERR_FLUSHING = 6, - UGP_ERR_FLUSHING_ALREADY = 7, - UGP_ERR_UNSUPPORTED = 8, - UGP_ERR_OTHER = 9 -}; - -enum agilent_82357_control_values { - XFER_ABORT = 0xa0, - XFER_STATUS = 0xb0, -}; - -enum xfer_status_bits { - XS_COMPLETED = 0x1, - XS_READ = 0x2, -}; - -enum xfer_status_completion_bits { - XSC_EOI = 0x1, - XSC_ATN = 0x2, - XSC_IFC = 0x4, - XSC_EOS = 0x8, - XSC_ABORT = 0x10, - XSC_COUNT = 0x20, - XSC_DEAD_BUS = 0x40, - XSC_BUS_NOT_ADDRESSED = 0x80 -}; - -enum xfer_abort_type { - XA_FLUSH = 0x1 -}; - -#define STATUS_DATA_LEN 8 -#define INTERRUPT_BUF_LEN 8 - -struct agilent_82357a_urb_ctx { - struct completion complete; - unsigned timed_out : 1; -}; - -// struct which defines local data for each 82357 device -struct agilent_82357a_priv { - struct usb_interface *bus_interface; - unsigned short eos_char; - unsigned short eos_mode; - unsigned short hw_control_bits; - unsigned long interrupt_flags; - struct urb *bulk_urb; - struct urb *interrupt_urb; - u8 *interrupt_buffer; - struct mutex bulk_transfer_lock; // bulk transfer lock - struct mutex bulk_alloc_lock; // bulk transfer allocation lock - struct mutex interrupt_alloc_lock; // interrupt allocation lock - struct mutex control_alloc_lock; // control message allocation lock - struct timer_list bulk_timer; - struct agilent_82357a_urb_ctx context; - unsigned int bulk_out_endpoint; - unsigned int interrupt_in_endpoint; - unsigned is_cic : 1; - unsigned ren_state : 1; -}; - -struct agilent_82357a_register_pairlet { - short address; - unsigned short value; -}; - -enum firmware_registers { - HW_CONTROL = 0xa, - LED_CONTROL = 0xb, - RESET_TO_POWERUP = 0xc, - PROTOCOL_CONTROL = 0xd, - FAST_TALKER_T1 = 0xe -}; - -enum hardware_control_bits { - NOT_TI_RESET = 0x1, - SYSTEM_CONTROLLER = 0x2, - NOT_PARALLEL_POLL = 0x4, - OSCILLATOR_5V_ON = 0x8, - OUTPUT_5V_ON = 0x20, - CPLD_3V_ON = 0x80, -}; - -enum led_control_bits { - FIRMWARE_LED_CONTROL = 0x1, - FAIL_LED_ON = 0x20, - READY_LED_ON = 0x40, - ACCESS_LED_ON = 0x80 -}; - -enum reset_to_powerup_bits { - RESET_SPACEBALL = 0x1, // wait 2 millisec after sending -}; - -enum protocol_control_bits { - WRITE_COMPLETE_INTERRUPT_EN = 0x1, -}; - -static const int agilent_82357a_control_request = 0x4; - diff --git a/drivers/staging/gpib/cb7210/Makefile b/drivers/staging/gpib/cb7210/Makefile deleted file mode 100644 index d239ae80b415..000000000000 --- a/drivers/staging/gpib/cb7210/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -obj-$(CONFIG_GPIB_CB7210) += cb7210.o - - diff --git a/drivers/staging/gpib/cb7210/cb7210.c b/drivers/staging/gpib/cb7210/cb7210.c deleted file mode 100644 index 3e2397898a9b..000000000000 --- a/drivers/staging/gpib/cb7210/cb7210.c +++ /dev/null @@ -1,1598 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * Measurement Computing boards using cb7210.2 and cbi488.2 chips - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "cb7210.h" -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <asm/dma.h> -#include <linux/bitops.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/delay.h> -#include "gpib_pci_ids.h" -#include "quancom_pci.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver Measurement Computing boards using cb7210.2 and cbi488.2"); - -static int cb7210_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read); - - static inline int have_fifo_word(const struct cb7210_priv *cb_priv) -{ - if (((cb7210_read_byte(cb_priv, HS_STATUS)) & - (HS_RX_MSB_NOT_EMPTY | HS_RX_LSB_NOT_EMPTY)) == - (HS_RX_MSB_NOT_EMPTY | HS_RX_LSB_NOT_EMPTY)) - return 1; - else - return 0; -} - -static inline void input_fifo_enable(struct gpib_board *board, int enable) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - if (enable) { - cb_priv->in_fifo_half_full = 0; - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - - cb7210_write_byte(cb_priv, HS_RX_ENABLE | HS_TX_ENABLE | HS_CLR_SRQ_INT | - HS_CLR_EOI_EMPTY_INT | HS_CLR_HF_INT | cb_priv->hs_mode_bits, - HS_MODE); - - cb_priv->hs_mode_bits &= ~HS_ENABLE_MASK; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - - cb7210_write_byte(cb_priv, irq_bits(cb_priv->irq), HS_INT_LEVEL); - - cb_priv->hs_mode_bits |= HS_RX_ENABLE; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - } else { - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - - cb_priv->hs_mode_bits &= ~HS_ENABLE_MASK; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, nec7210_iobase(cb_priv) + - HS_MODE); - - clear_bit(READ_READY_BN, &nec_priv->state); - } - - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static int fifo_read(struct gpib_board *board, struct cb7210_priv *cb_priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - int hs_status; - u16 word; - unsigned long flags; - - *bytes_read = 0; - if (cb_priv->fifo_iobase == 0) { - dev_err(board->gpib_dev, "fifo iobase is zero!\n"); - return -EIO; - } - *end = 0; - if (length <= cb7210_fifo_size) { - dev_err(board->gpib_dev, " bug! fifo read length < fifo size\n"); - return -EINVAL; - } - - input_fifo_enable(board, 1); - - while (*bytes_read + cb7210_fifo_size < length) { - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); - - if (wait_event_interruptible(board->wait, - (cb_priv->in_fifo_half_full && - have_fifo_word(cb_priv)) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - break; - } - - spin_lock_irqsave(&board->spinlock, flags); - - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - - while (have_fifo_word(cb_priv)) { - word = inw(cb_priv->fifo_iobase + DIR); - buffer[(*bytes_read)++] = word & 0xff; - buffer[(*bytes_read)++] = (word >> 8) & 0xff; - } - - cb_priv->in_fifo_half_full = 0; - - hs_status = cb7210_read_byte(cb_priv, HS_STATUS); - - spin_unlock_irqrestore(&board->spinlock, flags); - - if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) { - *end = 1; - break; - } - if (hs_status & HS_FIFO_FULL) - break; - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) { - retval = -EINTR; - break; - } - } - hs_status = cb7210_read_byte(cb_priv, HS_STATUS); - if (hs_status & HS_RX_LSB_NOT_EMPTY) { - word = inw(cb_priv->fifo_iobase + DIR); - buffer[(*bytes_read)++] = word & 0xff; - } - - input_fifo_enable(board, 0); - - if (wait_event_interruptible(board->wait, - test_bit(READ_READY_BN, &nec_priv->state) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - if (test_bit(READ_READY_BN, &nec_priv->state)) { - nec7210_set_handshake_mode(board, nec_priv, HR_HLDA); - buffer[(*bytes_read)++] = nec7210_read_data_in(board, nec_priv, end); - } - - return retval; -} - -static int cb7210_accel_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval; - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - size_t num_bytes; - - *bytes_read = 0; - // deal with limitations of fifo - if (length < cb7210_fifo_size + 3 || (nec_priv->auxa_bits & HR_REOS)) - return cb7210_read(board, buffer, length, end, bytes_read); - *end = 0; - - nec7210_release_rfd_holdoff(board, nec_priv); - - if (wait_event_interruptible(board->wait, - test_bit(READ_READY_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - return -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - return -EINTR; - - nec7210_set_handshake_mode(board, nec_priv, HR_HLDE); - buffer[(*bytes_read)++] = nec7210_read_data_in(board, nec_priv, end); - if (*end) - return 0; - - nec7210_release_rfd_holdoff(board, nec_priv); - - retval = fifo_read(board, cb_priv, &buffer[*bytes_read], length - *bytes_read - 1, - end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - if (*end) - return 0; - - retval = cb7210_read(board, &buffer[*bytes_read], 1, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - - return 0; -} - -static int output_fifo_empty(const struct cb7210_priv *cb_priv) -{ - if ((cb7210_read_byte(cb_priv, HS_STATUS) & (HS_TX_MSB_NOT_EMPTY | HS_TX_LSB_NOT_EMPTY)) - == 0) - return 1; - else - return 0; -} - -static inline void output_fifo_enable(struct gpib_board *board, int enable) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - if (enable) { - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO); - - cb7210_write_byte(cb_priv, HS_RX_ENABLE | HS_TX_ENABLE | HS_CLR_SRQ_INT | - HS_CLR_EOI_EMPTY_INT | HS_CLR_HF_INT | cb_priv->hs_mode_bits, - HS_MODE); - - cb_priv->hs_mode_bits &= ~HS_ENABLE_MASK; - cb_priv->hs_mode_bits |= HS_TX_ENABLE; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - - cb7210_write_byte(cb_priv, irq_bits(cb_priv->irq), HS_INT_LEVEL); - - clear_bit(WRITE_READY_BN, &nec_priv->state); - - } else { - cb_priv->hs_mode_bits &= ~HS_ENABLE_MASK; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, HR_DOIE); - } - - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static int fifo_write(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - size_t count = 0; - ssize_t retval = 0; - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned int num_bytes, i; - unsigned long flags; - - *bytes_written = 0; - if (cb_priv->fifo_iobase == 0) { - dev_err(board->gpib_dev, "fifo iobase is zero!\n"); - return -EINVAL; - } - if (length == 0) - return 0; - - clear_bit(DEV_CLEAR_BN, &nec_priv->state); - clear_bit(BUS_ERROR_BN, &nec_priv->state); - - output_fifo_enable(board, 1); - - while (count < length) { - // wait until byte is ready to be sent - if (wait_event_interruptible(board->wait, - cb_priv->out_fifo_half_empty || - output_fifo_empty(cb_priv) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - break; - } - if (test_bit(TIMO_NUM, &board->status) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(BUS_ERROR_BN, &nec_priv->state)) - break; - - if (output_fifo_empty(cb_priv)) - num_bytes = cb7210_fifo_size - cb7210_fifo_width; - else - num_bytes = cb7210_fifo_size / 2; - if (num_bytes + count > length) - num_bytes = length - count; - if (num_bytes % cb7210_fifo_width) { - dev_err(board->gpib_dev, " bug! fifo write with odd number of bytes\n"); - retval = -EINVAL; - break; - } - - spin_lock_irqsave(&board->spinlock, flags); - for (i = 0; i < num_bytes / cb7210_fifo_width; i++) { - u16 word; - - word = buffer[count++] & 0xff; - word |= (buffer[count++] << 8) & 0xff00; - outw(word, cb_priv->fifo_iobase + CDOR); - } - cb_priv->out_fifo_half_empty = 0; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits | - HS_CLR_EOI_EMPTY_INT | HS_CLR_HF_INT, HS_MODE); - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - spin_unlock_irqrestore(&board->spinlock, flags); - } - // wait last byte has been sent - if (wait_event_interruptible(board->wait, - output_fifo_empty(cb_priv) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(BUS_ERROR_BN, &nec_priv->state)) - retval = -EIO; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - - output_fifo_enable(board, 0); - - *bytes_written = count; - return retval; -} - -static int cb7210_accel_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned long fast_chunk_size, leftover; - int retval; - size_t num_bytes; - - *bytes_written = 0; - if (length > cb7210_fifo_width) - fast_chunk_size = length - 1; - else - fast_chunk_size = 0; - fast_chunk_size -= fast_chunk_size % cb7210_fifo_width; - leftover = length - fast_chunk_size; - - retval = fifo_write(board, buffer, fast_chunk_size, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - - retval = nec7210_write(board, nec_priv, buffer + fast_chunk_size, leftover, - send_eoi, &num_bytes); - *bytes_written += num_bytes; - return retval; -} - -static int cb7210_line_status(const struct gpib_board *board) -{ - int status = VALID_ALL; - int bsr_bits; - struct cb7210_priv *cb_priv; - - cb_priv = board->private_data; - - bsr_bits = cb7210_paged_read_byte(cb_priv, BUS_STATUS, BUS_STATUS_PAGE); - - if ((bsr_bits & BSR_REN_BIT) == 0) - status |= BUS_REN; - if ((bsr_bits & BSR_IFC_BIT) == 0) - status |= BUS_IFC; - if ((bsr_bits & BSR_SRQ_BIT) == 0) - status |= BUS_SRQ; - if ((bsr_bits & BSR_EOI_BIT) == 0) - status |= BUS_EOI; - if ((bsr_bits & BSR_NRFD_BIT) == 0) - status |= BUS_NRFD; - if ((bsr_bits & BSR_NDAC_BIT) == 0) - status |= BUS_NDAC; - if ((bsr_bits & BSR_DAV_BIT) == 0) - status |= BUS_DAV; - if ((bsr_bits & BSR_ATN_BIT) == 0) - status |= BUS_ATN; - - return status; -} - -static int cb7210_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned int retval; - - retval = nec7210_t1_delay(board, nec_priv, nano_sec); - - if (nano_sec <= 350) { - write_byte(nec_priv, AUX_HI_SPEED, AUXMR); - retval = 350; - } else { - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - } - return retval; -} - -static irqreturn_t cb7210_locked_internal_interrupt(struct gpib_board *board); - -/* - * GPIB interrupt service routines - */ - -static irqreturn_t cb_pci_interrupt(int irq, void *arg) -{ - int bits; - struct gpib_board *board = arg; - struct cb7210_priv *priv = board->private_data; - - // first task check if this is really our interrupt in a shared irq environment - switch (priv->pci_chip) { - case PCI_CHIP_AMCC_S5933: - if ((inl(priv->amcc_iobase + INTCSR_REG) & - (INBOX_INTR_CS_BIT | INTR_ASSERTED_BIT)) == 0) - return IRQ_NONE; - - // read incoming mailbox to clear mailbox full flag - inl(priv->amcc_iobase + INCOMING_MAILBOX_REG(3)); - // clear amccs5933 interrupt - bits = INBOX_FULL_INTR_BIT | INBOX_BYTE_BITS(3) | - INBOX_SELECT_BITS(3) | INBOX_INTR_CS_BIT; - outl(bits, priv->amcc_iobase + INTCSR_REG); - break; - case PCI_CHIP_QUANCOM: - if ((inb(nec7210_iobase(priv) + QUANCOM_IRQ_CONTROL_STATUS_REG) & - QUANCOM_IRQ_ASSERTED_BIT)) - outb(QUANCOM_IRQ_ENABLE_BIT, nec7210_iobase(priv) + - QUANCOM_IRQ_CONTROL_STATUS_REG); - break; - default: - break; - } - return cb7210_locked_internal_interrupt(arg); -} - -static irqreturn_t cb7210_internal_interrupt(struct gpib_board *board) -{ - int hs_status, status1, status2; - struct cb7210_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - int clear_bits; - - if ((priv->hs_mode_bits & HS_ENABLE_MASK)) { - status1 = 0; - hs_status = cb7210_read_byte(priv, HS_STATUS); - } else { - hs_status = 0; - status1 = read_byte(nec_priv, ISR1); - } - status2 = read_byte(nec_priv, ISR2); - nec7210_interrupt_have_status(board, nec_priv, status1, status2); - - dev_dbg(board->gpib_dev, "status 0x%x, mode 0x%x\n", hs_status, priv->hs_mode_bits); - - clear_bits = 0; - - if (hs_status & HS_HALF_FULL) { - if (priv->hs_mode_bits & HS_TX_ENABLE) - priv->out_fifo_half_empty = 1; - else if (priv->hs_mode_bits & HS_RX_ENABLE) - priv->in_fifo_half_full = 1; - clear_bits |= HS_CLR_HF_INT; - } - - if (hs_status & HS_SRQ_INT) { - set_bit(SRQI_NUM, &board->status); - clear_bits |= HS_CLR_SRQ_INT; - } - - if ((hs_status & HS_EOI_INT)) { - clear_bits |= HS_CLR_EOI_EMPTY_INT; - set_bit(RECEIVED_END_BN, &nec_priv->state); - if ((nec_priv->auxa_bits & HR_HANDSHAKE_MASK) == HR_HLDE) - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - } - - if ((priv->hs_mode_bits & HS_TX_ENABLE) && - (hs_status & (HS_TX_MSB_NOT_EMPTY | HS_TX_LSB_NOT_EMPTY)) == 0) - clear_bits |= HS_CLR_EOI_EMPTY_INT; - - if (clear_bits) { - cb7210_write_byte(priv, priv->hs_mode_bits | clear_bits, HS_MODE); - cb7210_write_byte(priv, priv->hs_mode_bits, HS_MODE); - wake_up_interruptible(&board->wait); - } - - return IRQ_HANDLED; -} - -static irqreturn_t cb7210_locked_internal_interrupt(struct gpib_board *board) -{ - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = cb7210_internal_interrupt(board); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -static irqreturn_t cb7210_interrupt(int irq, void *arg) -{ - return cb7210_internal_interrupt(arg); -} - -static int cb_pci_attach(struct gpib_board *board, const struct gpib_board_config *config); -static int cb_isa_attach(struct gpib_board *board, const struct gpib_board_config *config); - -static void cb_pci_detach(struct gpib_board *board); -static void cb_isa_detach(struct gpib_board *board); - -// wrappers for interface functions -static int cb7210_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); -} - -static int cb7210_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int cb7210_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int cb7210_take_control(struct gpib_board *board, int synchronous) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int cb7210_go_to_standby(struct gpib_board *board) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int cb7210_request_system_control(struct gpib_board *board, int request_control) -{ - struct cb7210_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - if (request_control) - priv->hs_mode_bits |= HS_SYS_CONTROL; - else - priv->hs_mode_bits &= ~HS_SYS_CONTROL; - - cb7210_write_byte(priv, priv->hs_mode_bits, HS_MODE); - return nec7210_request_system_control(board, nec_priv, request_control); -} - -static void cb7210_interface_clear(struct gpib_board *board, int assert) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void cb7210_remote_enable(struct gpib_board *board, int enable) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int cb7210_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void cb7210_disable_eos(struct gpib_board *board) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int cb7210_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int cb7210_primary_address(struct gpib_board *board, unsigned int address) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int cb7210_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int cb7210_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void cb7210_parallel_poll_configure(struct gpib_board *board, u8 configuration) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, configuration); -} - -static void cb7210_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void cb7210_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct cb7210_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static u8 cb7210_serial_poll_status(struct gpib_board *board) -{ - struct cb7210_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static void cb7210_return_to_local(struct gpib_board *board) -{ - struct cb7210_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - write_byte(nec_priv, AUX_RTL2, AUXMR); - udelay(1); - write_byte(nec_priv, AUX_RTL, AUXMR); -} - -static struct gpib_interface cb_pci_unaccel_interface = { - .name = "cbi_pci_unaccel", - .attach = cb_pci_attach, - .detach = cb_pci_detach, - .read = cb7210_read, - .write = cb7210_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_pci_accel_interface = { - .name = "cbi_pci_accel", - .attach = cb_pci_attach, - .detach = cb_pci_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_pci_interface = { - .name = "cbi_pci", - .attach = cb_pci_attach, - .detach = cb_pci_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_isa_unaccel_interface = { - .name = "cbi_isa_unaccel", - .attach = cb_isa_attach, - .detach = cb_isa_detach, - .read = cb7210_read, - .write = cb7210_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_isa_interface = { - .name = "cbi_isa", - .attach = cb_isa_attach, - .detach = cb_isa_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_isa_accel_interface = { - .name = "cbi_isa_accel", - .attach = cb_isa_attach, - .detach = cb_isa_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static int cb7210_allocate_private(struct gpib_board *board) -{ - struct cb7210_priv *priv; - - board->private_data = kmalloc(sizeof(struct cb7210_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - priv = board->private_data; - memset(priv, 0, sizeof(struct cb7210_priv)); - init_nec7210_private(&priv->nec7210_priv); - return 0; -} - -static void cb7210_generic_detach(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -// generic part of attach functions shared by all cb7210 boards -static int cb7210_generic_attach(struct gpib_board *board) -{ - struct cb7210_priv *cb_priv; - struct nec7210_priv *nec_priv; - - board->status = 0; - - if (cb7210_allocate_private(board)) - return -ENOMEM; - cb_priv = board->private_data; - nec_priv = &cb_priv->nec7210_priv; - nec_priv->read_byte = nec7210_locking_ioport_read_byte; - nec_priv->write_byte = nec7210_locking_ioport_write_byte; - nec_priv->offset = cb7210_reg_offset; - nec_priv->type = CB7210; - return 0; -} - -static int cb7210_init(struct cb7210_priv *cb_priv, struct gpib_board *board) -{ - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - - cb7210_write_byte(cb_priv, HS_RESET7210, HS_INT_LEVEL); - cb7210_write_byte(cb_priv, irq_bits(cb_priv->irq), HS_INT_LEVEL); - - nec7210_board_reset(nec_priv, board); - cb7210_write_byte(cb_priv, HS_TX_ENABLE | HS_RX_ENABLE | HS_CLR_SRQ_INT | - HS_CLR_EOI_EMPTY_INT | HS_CLR_HF_INT, HS_MODE); - - cb_priv->hs_mode_bits = HS_HF_INT_EN; - cb7210_write_byte(cb_priv, cb_priv->hs_mode_bits, HS_MODE); - - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - /* - * set clock register for maximum (20 MHz) driving frequency - * ICR should be set to clock in megahertz (1-15) and to zero - * for clocks faster than 15 MHz (max 20MHz) - */ - write_byte(nec_priv, ICR | 0, AUXMR); - - if (cb_priv->pci_chip == PCI_CHIP_QUANCOM) { - /* change interrupt polarity */ - nec_priv->auxb_bits |= HR_INV; - write_byte(nec_priv, nec_priv->auxb_bits, AUXMR); - } - nec7210_board_online(nec_priv, board); - - /* poll so we can detect assertion of ATN */ - if (gpib_request_pseudo_irq(board, cb_pci_interrupt)) { - pr_err("failed to allocate pseudo_irq\n"); - return -1; - } - return 0; -} - -static int cb_pci_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct cb7210_priv *cb_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - int bits; - int retval; - - retval = cb7210_generic_attach(board); - if (retval) - return retval; - - cb_priv = board->private_data; - nec_priv = &cb_priv->nec7210_priv; - - cb_priv->pci_device = gpib_pci_get_device(config, PCI_VENDOR_ID_CBOARDS, - PCI_DEVICE_ID_CBOARDS_PCI_GPIB, NULL); - if (cb_priv->pci_device) - cb_priv->pci_chip = PCI_CHIP_AMCC_S5933; - if (!cb_priv->pci_device) { - cb_priv->pci_device = gpib_pci_get_device(config, PCI_VENDOR_ID_CBOARDS, - PCI_DEVICE_ID_CBOARDS_CPCI_GPIB, NULL); - if (cb_priv->pci_device) - cb_priv->pci_chip = PCI_CHIP_AMCC_S5933; - } - if (!cb_priv->pci_device) { - cb_priv->pci_device = gpib_pci_get_device(config, PCI_VENDOR_ID_QUANCOM, - PCI_DEVICE_ID_QUANCOM_GPIB, NULL); - if (cb_priv->pci_device) { - cb_priv->pci_chip = PCI_CHIP_QUANCOM; - nec_priv->offset = 4; - } - } - if (!cb_priv->pci_device) { - dev_err(board->gpib_dev, "no supported boards found.\n"); - return -ENODEV; - } - - if (pci_enable_device(cb_priv->pci_device)) { - dev_err(board->gpib_dev, "error enabling pci device\n"); - return -EIO; - } - - if (pci_request_regions(cb_priv->pci_device, DRV_NAME)) - return -EBUSY; - switch (cb_priv->pci_chip) { - case PCI_CHIP_AMCC_S5933: - cb_priv->amcc_iobase = pci_resource_start(cb_priv->pci_device, 0); - nec_priv->iobase = pci_resource_start(cb_priv->pci_device, 1); - cb_priv->fifo_iobase = pci_resource_start(cb_priv->pci_device, 2); - break; - case PCI_CHIP_QUANCOM: - nec_priv->iobase = pci_resource_start(cb_priv->pci_device, 0); - cb_priv->fifo_iobase = nec_priv->iobase; - break; - default: - dev_err(board->gpib_dev, "bug! unhandled pci_chip=%i\n", cb_priv->pci_chip); - return -EIO; - } - isr_flags |= IRQF_SHARED; - if (request_irq(cb_priv->pci_device->irq, cb_pci_interrupt, isr_flags, DRV_NAME, board)) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", - cb_priv->pci_device->irq); - return -EBUSY; - } - cb_priv->irq = cb_priv->pci_device->irq; - - switch (cb_priv->pci_chip) { - case PCI_CHIP_AMCC_S5933: - // make sure mailbox flags are clear - inl(cb_priv->amcc_iobase + INCOMING_MAILBOX_REG(3)); - // enable interrupts on amccs5933 chip - bits = INBOX_FULL_INTR_BIT | INBOX_BYTE_BITS(3) | INBOX_SELECT_BITS(3) | - INBOX_INTR_CS_BIT; - outl(bits, cb_priv->amcc_iobase + INTCSR_REG); - break; - default: - break; - } - return cb7210_init(cb_priv, board); -} - -static void cb_pci_detach(struct gpib_board *board) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (cb_priv) { - gpib_free_pseudo_irq(board); - nec_priv = &cb_priv->nec7210_priv; - if (cb_priv->irq) { - // disable amcc interrupts - outl(0, cb_priv->amcc_iobase + INTCSR_REG); - free_irq(cb_priv->irq, board); - } - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - pci_release_regions(cb_priv->pci_device); - } - if (cb_priv->pci_device) - pci_dev_put(cb_priv->pci_device); - } - cb7210_generic_detach(board); -} - -static int cb_isa_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - int isr_flags = 0; - struct cb7210_priv *cb_priv; - struct nec7210_priv *nec_priv; - unsigned int bits; - int retval; - - retval = cb7210_generic_attach(board); - if (retval) - return retval; - cb_priv = board->private_data; - nec_priv = &cb_priv->nec7210_priv; - if (!request_region(config->ibbase, cb7210_iosize, DRV_NAME)) { - dev_err(board->gpib_dev, "ioports starting at 0x%x are already in use\n", - config->ibbase); - return -EBUSY; - } - nec_priv->iobase = config->ibbase; - cb_priv->fifo_iobase = nec7210_iobase(cb_priv); - - bits = irq_bits(config->ibirq); - if (bits == 0) - dev_err(board->gpib_dev, "board incapable of using irq %i, try 2-5, 7, 10, or 11\n", - config->ibirq); - - // install interrupt handler - if (request_irq(config->ibirq, cb7210_interrupt, isr_flags, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to obtain IRQ %d\n", config->ibirq); - return -EBUSY; - } - cb_priv->irq = config->ibirq; - - return cb7210_init(cb_priv, board); -} - -static void cb_isa_detach(struct gpib_board *board) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (cb_priv) { - gpib_free_pseudo_irq(board); - nec_priv = &cb_priv->nec7210_priv; - if (cb_priv->irq) - free_irq(cb_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - release_region(nec7210_iobase(cb_priv), cb7210_iosize); - } - } - cb7210_generic_detach(board); -} - -static int cb7210_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - return 0; -} - -static const struct pci_device_id cb7210_pci_table[] = { - {PCI_VENDOR_ID_CBOARDS, PCI_DEVICE_ID_CBOARDS_PCI_GPIB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - {PCI_VENDOR_ID_CBOARDS, PCI_DEVICE_ID_CBOARDS_CPCI_GPIB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - {PCI_VENDOR_ID_QUANCOM, PCI_DEVICE_ID_QUANCOM_GPIB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, cb7210_pci_table); - -static struct pci_driver cb7210_pci_driver = { - .name = DRV_NAME, - .id_table = cb7210_pci_table, - .probe = &cb7210_pci_probe -}; - -/*************************************************************************** - * Support for computer boards pcmcia-gpib card - * - * Based on gpib PCMCIA client driver written by Claus Schroeter - * (clausi@chemie.fu-berlin.de), which was adapted from the - * pcmcia skeleton example (presumably David Hinds) - ***************************************************************************/ - -#ifdef CONFIG_GPIB_PCMCIA - -#include <linux/kernel.h> -#include <linux/ptrace.h> -#include <linux/timer.h> -#include <linux/io.h> - -#include <pcmcia/cistpl.h> -#include <pcmcia/ds.h> - -/* - * The event() function is this driver's Card Services event handler. - * It will be called by Card Services when an appropriate card status - * event is received. The config() and release() entry points are - * used to configure or release a socket, in response to card insertion - * and ejection events. They are invoked from the gpib event - * handler. - */ - -static int cb_gpib_config(struct pcmcia_device *link); -static void cb_gpib_release(struct pcmcia_device *link); -static int cb_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config); -static void cb_pcmcia_detach(struct gpib_board *board); - -/* - * A linked list of "instances" of the gpib device. Each actual - * PCMCIA card corresponds to one device instance, and is described - * by one dev_link_t structure (defined in ds.h). - * - * You may not want to use a linked list for this -- for example, the - * memory card driver uses an array of dev_link_t pointers, where minor - * device numbers are used to derive the corresponding array index. - */ - -static struct pcmcia_device *curr_dev; - -/* - * A dev_link_t structure has fields for most things that are needed - * to keep track of a socket, but there will usually be some device - * specific information that also needs to be kept track of. The - * 'priv' pointer in a dev_link_t structure can be used to point to - * a device-specific private data structure, like this. - * - * A driver needs to provide a dev_node_t structure for each device - * on a card. In some cases, there is only one device per card (for - * example, ethernet cards, modems). In other cases, there may be - * many actual or logical devices (SCSI adapters, memory cards with - * multiple partitions). The dev_node_t structures need to be kept - * in a linked list starting at the 'dev' field of a dev_link_t - * structure. We allocate them in the card's private data structure, - * because they generally can't be allocated dynamically. - */ - -struct local_info { - struct pcmcia_device *p_dev; - struct gpib_board *dev; -}; - -/* - * gpib_attach() creates an "instance" of the driver, allocating - * local data structures for one device. The device is registered - * with Card Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a - * card insertion event. - */ - -static int cb_gpib_probe(struct pcmcia_device *link) -{ - struct local_info *info; - int ret; - - /* Allocate space for private device-specific data */ - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - info->p_dev = link; - link->priv = info; - - /* The io structure describes IO port mapping */ - link->resource[0]->end = 16; - link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->resource[1]->end = 16; - link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; - link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; - link->io_lines = 10; - - /* General socket configuration */ - link->config_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; - link->config_index = 1; - link->config_regs = PRESENT_OPTION; - - /* Register with Card Services */ - curr_dev = link; - ret = cb_gpib_config(link); - if (ret) - goto free_info; - - return 0; - -free_info: - kfree(info); - return ret; -} - -/* - * This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ - -static void cb_gpib_remove(struct pcmcia_device *link) -{ - struct local_info *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (info->dev) - cb_pcmcia_detach(info->dev); - cb_gpib_release(link); - - //free_netdev(dev); - kfree(info); -} - -static int cb_gpib_config_iteration(struct pcmcia_device *link, void *priv_data) -{ - return pcmcia_request_io(link); -} - -/* - * gpib_config() is scheduled to run after a CARD_INSERTION event - * is received, to configure the PCMCIA socket, and to make the - * ethernet device available to the system. - */ - -static int cb_gpib_config(struct pcmcia_device *link) -{ - int retval; - - retval = pcmcia_loop_config(link, &cb_gpib_config_iteration, NULL); - if (retval) { - dev_warn(&link->dev, "no configuration found\n"); - cb_gpib_release(link); - return -ENODEV; - } - - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping. - */ - retval = pcmcia_enable_device(link); - if (retval) { - dev_warn(&link->dev, "pcmcia_enable_device failed\n"); - cb_gpib_release(link); - return -ENODEV; - } - - return 0; -} /* gpib_config */ - -/* - * After a card is removed, gpib_release() will unregister the net - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ - -static void cb_gpib_release(struct pcmcia_device *link) -{ - pcmcia_disable_device(link); -} - -static int cb_gpib_suspend(struct pcmcia_device *link) -{ - //struct local_info *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (link->open) - dev_warn(&link->dev, "Device still open\n"); - //netif_device_detach(dev); - - return 0; -} - -static int cb_gpib_resume(struct pcmcia_device *link) -{ - //struct local_info *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - /*if (link->open) { - * ni_gpib_probe(dev); / really? - * //netif_device_attach(dev); - * - */ - return cb_gpib_config(link); -} - -/*====================================================================*/ - -static struct pcmcia_device_id cb_pcmcia_ids[] = { - PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0005), - PCMCIA_DEVICE_NULL -}; -MODULE_DEVICE_TABLE(pcmcia, cb_pcmcia_ids); - -static struct pcmcia_driver cb_gpib_cs_driver = { - .name = "cb_gpib_cs", - .owner = THIS_MODULE, - .id_table = cb_pcmcia_ids, - .probe = cb_gpib_probe, - .remove = cb_gpib_remove, - .suspend = cb_gpib_suspend, - .resume = cb_gpib_resume, -}; - -static void cb_pcmcia_cleanup_module(void) -{ - pcmcia_unregister_driver(&cb_gpib_cs_driver); -} - -static struct gpib_interface cb_pcmcia_unaccel_interface = { - .name = "cbi_pcmcia_unaccel", - .attach = cb_pcmcia_attach, - .detach = cb_pcmcia_detach, - .read = cb7210_read, - .write = cb7210_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_pcmcia_interface = { - .name = "cbi_pcmcia", - .attach = cb_pcmcia_attach, - .detach = cb_pcmcia_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static struct gpib_interface cb_pcmcia_accel_interface = { - .name = "cbi_pcmcia_accel", - .attach = cb_pcmcia_attach, - .detach = cb_pcmcia_detach, - .read = cb7210_accel_read, - .write = cb7210_accel_write, - .command = cb7210_command, - .take_control = cb7210_take_control, - .go_to_standby = cb7210_go_to_standby, - .request_system_control = cb7210_request_system_control, - .interface_clear = cb7210_interface_clear, - .remote_enable = cb7210_remote_enable, - .enable_eos = cb7210_enable_eos, - .disable_eos = cb7210_disable_eos, - .parallel_poll = cb7210_parallel_poll, - .parallel_poll_configure = cb7210_parallel_poll_configure, - .parallel_poll_response = cb7210_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = cb7210_line_status, - .update_status = cb7210_update_status, - .primary_address = cb7210_primary_address, - .secondary_address = cb7210_secondary_address, - .serial_poll_response = cb7210_serial_poll_response, - .serial_poll_status = cb7210_serial_poll_status, - .t1_delay = cb7210_t1_delay, - .return_to_local = cb7210_return_to_local, -}; - -static int cb_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct cb7210_priv *cb_priv; - struct nec7210_priv *nec_priv; - int retval; - - if (!curr_dev) { - dev_err(board->gpib_dev, "no cb pcmcia cards found\n"); - return -ENODEV; - } - - retval = cb7210_generic_attach(board); - if (retval) - return retval; - - cb_priv = board->private_data; - nec_priv = &cb_priv->nec7210_priv; - - if (!request_region(curr_dev->resource[0]->start, resource_size(curr_dev->resource[0]), - DRV_NAME)) { - dev_err(board->gpib_dev, "ioports starting at 0x%lx are already in use\n", - (unsigned long)curr_dev->resource[0]->start); - return -EBUSY; - } - nec_priv->iobase = curr_dev->resource[0]->start; - cb_priv->fifo_iobase = curr_dev->resource[0]->start; - - if (request_irq(curr_dev->irq, cb7210_interrupt, IRQF_SHARED, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to request IRQ %d\n", curr_dev->irq); - return -EBUSY; - } - cb_priv->irq = curr_dev->irq; - - return cb7210_init(cb_priv, board); -} - -static void cb_pcmcia_detach(struct gpib_board *board) -{ - struct cb7210_priv *cb_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (cb_priv) { - nec_priv = &cb_priv->nec7210_priv; - gpib_free_pseudo_irq(board); - if (cb_priv->irq) - free_irq(cb_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - release_region(nec7210_iobase(cb_priv), cb7210_iosize); - } - } - cb7210_generic_detach(board); -} - -#endif /* CONFIG_GPIB_PCMCIA */ - -static int __init cb7210_init_module(void) -{ - int ret; - - ret = pci_register_driver(&cb7210_pci_driver); - if (ret) { - pr_err("pci_register_driver failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&cb_pci_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci; - } - - ret = gpib_register_driver(&cb_isa_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_isa; - } - - ret = gpib_register_driver(&cb_pci_accel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci_accel; - } - - ret = gpib_register_driver(&cb_pci_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci_unaccel; - } - - ret = gpib_register_driver(&cb_isa_accel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_isa_accel; - } - - ret = gpib_register_driver(&cb_isa_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_isa_unaccel; - } - -#ifdef CONFIG_GPIB_PCMCIA - ret = gpib_register_driver(&cb_pcmcia_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia; - } - - ret = gpib_register_driver(&cb_pcmcia_accel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia_accel; - } - - ret = gpib_register_driver(&cb_pcmcia_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia_unaccel; - } - - ret = pcmcia_register_driver(&cb_gpib_cs_driver); - if (ret) { - pr_err("pcmcia_register_driver failed: error = %d\n", ret); - goto err_pcmcia_driver; - } -#endif - - return 0; - -#ifdef CONFIG_GPIB_PCMCIA -err_pcmcia_driver: - gpib_unregister_driver(&cb_pcmcia_unaccel_interface); -err_pcmcia_unaccel: - gpib_unregister_driver(&cb_pcmcia_accel_interface); -err_pcmcia_accel: - gpib_unregister_driver(&cb_pcmcia_interface); -err_pcmcia: -#endif - gpib_unregister_driver(&cb_isa_unaccel_interface); -err_isa_unaccel: - gpib_unregister_driver(&cb_isa_accel_interface); -err_isa_accel: - gpib_unregister_driver(&cb_pci_unaccel_interface); -err_pci_unaccel: - gpib_unregister_driver(&cb_pci_accel_interface); -err_pci_accel: - gpib_unregister_driver(&cb_isa_interface); -err_isa: - gpib_unregister_driver(&cb_pci_interface); -err_pci: - pci_unregister_driver(&cb7210_pci_driver); - - return ret; -} - -static void __exit cb7210_exit_module(void) -{ - gpib_unregister_driver(&cb_pci_interface); - gpib_unregister_driver(&cb_isa_interface); - gpib_unregister_driver(&cb_pci_accel_interface); - gpib_unregister_driver(&cb_pci_unaccel_interface); - gpib_unregister_driver(&cb_isa_accel_interface); - gpib_unregister_driver(&cb_isa_unaccel_interface); -#ifdef CONFIG_GPIB_PCMCIA - gpib_unregister_driver(&cb_pcmcia_interface); - gpib_unregister_driver(&cb_pcmcia_accel_interface); - gpib_unregister_driver(&cb_pcmcia_unaccel_interface); - cb_pcmcia_cleanup_module(); -#endif - - pci_unregister_driver(&cb7210_pci_driver); -} - -module_init(cb7210_init_module); -module_exit(cb7210_exit_module); diff --git a/drivers/staging/gpib/cb7210/cb7210.h b/drivers/staging/gpib/cb7210/cb7210.h deleted file mode 100644 index ddc841ff87ae..000000000000 --- a/drivers/staging/gpib/cb7210/cb7210.h +++ /dev/null @@ -1,203 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#include "nec7210.h" -#include "gpibP.h" -#include "amccs5933.h" - -#include <linux/delay.h> -#include <linux/interrupt.h> - -enum { - PCI_DEVICE_ID_CBOARDS_PCI_GPIB = 0x6, - PCI_DEVICE_ID_CBOARDS_CPCI_GPIB = 0xe, -}; - -enum pci_chip { - PCI_CHIP_NONE = 0, - PCI_CHIP_AMCC_S5933, - PCI_CHIP_QUANCOM -}; - -// struct which defines private_data for cb7210 boards -struct cb7210_priv { - struct nec7210_priv nec7210_priv; - struct pci_dev *pci_device; - // base address of amccs5933 pci chip - unsigned long amcc_iobase; - unsigned long fifo_iobase; - unsigned int irq; - enum pci_chip pci_chip; - u8 hs_mode_bits; - unsigned out_fifo_half_empty : 1; - unsigned in_fifo_half_full : 1; -}; - -// pci-gpib register offset -static const int cb7210_reg_offset = 1; - -// uses 10 ioports -static const int cb7210_iosize = 10; - -// fifo size in bytes -static const int cb7210_fifo_size = 2048; -static const int cb7210_fifo_width = 2; - -// cb7210 specific registers and bits -enum cb7210_regs { - BUS_STATUS = 0x7, -}; - -enum cb7210_page_in { - BUS_STATUS_PAGE = 1, -}; - -enum hs_regs { - // write registers - HS_MODE = 0x8, /* HS_MODE register */ - HS_INT_LEVEL = 0x9, /* HS_INT_LEVEL register */ - // read registers - HS_STATUS = 0x8, /* HS_STATUS register */ -}; - -static inline u32 nec7210_iobase(const struct cb7210_priv *cb_priv) -{ - return cb_priv->nec7210_priv.iobase; -} - -static inline int cb7210_page_in_bits(unsigned int page) -{ - return 0x50 | (page & 0xf); -} - -static inline u8 cb7210_paged_read_byte(struct cb7210_priv *cb_priv, - unsigned int register_num, unsigned int page) -{ - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - u8 retval; - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - outb(cb7210_page_in_bits(page), nec7210_iobase(cb_priv) + AUXMR * nec_priv->offset); - udelay(1); - retval = inb(nec7210_iobase(cb_priv) + register_num * nec_priv->offset); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); - return retval; -} - -// don't use for register_num < 8, since it doesn't lock -static inline u8 cb7210_read_byte(const struct cb7210_priv *cb_priv, - enum hs_regs register_num) -{ - const struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - u8 retval; - - retval = inb(nec7210_iobase(cb_priv) + register_num * nec_priv->offset); - return retval; -} - -static inline void cb7210_paged_write_byte(struct cb7210_priv *cb_priv, u8 data, - unsigned int register_num, unsigned int page) -{ - struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - outb(cb7210_page_in_bits(page), nec7210_iobase(cb_priv) + AUXMR * nec_priv->offset); - udelay(1); - outb(data, nec7210_iobase(cb_priv) + register_num * nec_priv->offset); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); -} - -// don't use for register_num < 8, since it doesn't lock -static inline void cb7210_write_byte(const struct cb7210_priv *cb_priv, u8 data, - enum hs_regs register_num) -{ - const struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; - - outb(data, nec7210_iobase(cb_priv) + register_num * nec_priv->offset); -} - -enum bus_status_bits { - BSR_ATN_BIT = 0x1, - BSR_EOI_BIT = 0x2, - BSR_SRQ_BIT = 0x4, - BSR_IFC_BIT = 0x8, - BSR_REN_BIT = 0x10, - BSR_DAV_BIT = 0x20, - BSR_NRFD_BIT = 0x40, - BSR_NDAC_BIT = 0x80, -}; - -/* CBI 488.2 HS control */ - -/* - * when both bit 0 and 1 are set, it - * 1 clears the transmit state machine to an initial condition - * 2 clears any residual interrupts left latched on cbi488.2 - * 3 resets all control bits in HS_MODE to zero - * 4 enables TX empty interrupts - * when both bit 0 and 1 are zero, then the high speed mode is disabled - */ -enum hs_mode_bits { - HS_ENABLE_MASK = 0x3, - HS_TX_ENABLE = (1 << 0), - HS_RX_ENABLE = (1 << 1), - HS_HF_INT_EN = (1 << 3), - HS_CLR_SRQ_INT = (1 << 4), - HS_CLR_EOI_EMPTY_INT = (1 << 5), - HS_CLR_HF_INT = (1 << 6), - HS_SYS_CONTROL = (1 << 7), -}; - -/* CBI 488.2 status */ -enum hs_status_bits { - HS_FIFO_FULL = (1 << 0), - HS_HALF_FULL = (1 << 1), - HS_SRQ_INT = (1 << 2), - HS_EOI_INT = (1 << 3), - HS_TX_MSB_NOT_EMPTY = (1 << 4), - HS_RX_MSB_NOT_EMPTY = (1 << 5), - HS_TX_LSB_NOT_EMPTY = (1 << 6), - HS_RX_LSB_NOT_EMPTY = (1 << 7), -}; - -/* CBI488.2 hs_int_level register */ -enum hs_int_level_bits { - HS_RESET7210 = (1 << 7), -}; - -static inline unsigned int irq_bits(unsigned int irq) -{ - switch (irq) { - case 2: - case 3: - case 4: - case 5: - return irq - 1; - case 7: - return 0x5; - case 10: - return 0x6; - case 11: - return 0x7; - default: - return 0; - } -} - -enum cb7210_aux_cmds { -/* - * AUX_RTL2 is an undocumented aux command which causes cb7210 to assert - * (and keep asserted) local rtl message. This is used in conjunction - * with the (stupid) cb7210 implementation - * of the normal nec7210 AUX_RTL aux command, which - * causes the rtl message to toggle between on and off. - */ - AUX_RTL2 = 0xd, - AUX_LO_SPEED = 0x40, - AUX_HI_SPEED = 0x41, -}; diff --git a/drivers/staging/gpib/cec/Makefile b/drivers/staging/gpib/cec/Makefile deleted file mode 100644 index b7141e23d4e0..000000000000 --- a/drivers/staging/gpib/cec/Makefile +++ /dev/null @@ -1,3 +0,0 @@ - -obj-$(CONFIG_GPIB_CEC_PCI) += cec_gpib.o - diff --git a/drivers/staging/gpib/cec/cec.h b/drivers/staging/gpib/cec/cec.h deleted file mode 100644 index 3ce2869c7429..000000000000 --- a/drivers/staging/gpib/cec/cec.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#include "nec7210.h" -#include "gpibP.h" -#include "plx9050.h" - -struct cec_priv { - struct nec7210_priv nec7210_priv; - struct pci_dev *pci_device; - // base address for plx9052 pci chip - unsigned long plx_iobase; - unsigned int irq; -}; - -// offset between consecutive nec7210 registers -static const int cec_reg_offset = 1; diff --git a/drivers/staging/gpib/cec/cec_gpib.c b/drivers/staging/gpib/cec/cec_gpib.c deleted file mode 100644 index dbf9b95baabc..000000000000 --- a/drivers/staging/gpib/cec/cec_gpib.c +++ /dev/null @@ -1,393 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "cec.h" -#include <linux/pci.h> -#include <linux/io.h> -#include <linux/bitops.h> -#include <asm/dma.h> -#include <linux/module.h> -#include <linux/slab.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for CEC PCI and PCMCIA boards"); - -/* - * GPIB interrupt service routines - */ - -static irqreturn_t cec_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct cec_priv *priv = board->private_data; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = nec7210_interrupt(board, &priv->nec7210_priv); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -#define CEC_VENDOR_ID 0x12fc -#define CEC_DEV_ID 0x5cec -#define CEC_SUBID 0x9050 - -static int cec_pci_attach(struct gpib_board *board, const struct gpib_board_config *config); - -static void cec_pci_detach(struct gpib_board *board); - -// wrappers for interface functions -static int cec_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); -} - -static int cec_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int cec_command(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int cec_take_control(struct gpib_board *board, int synchronous) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int cec_go_to_standby(struct gpib_board *board) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int cec_request_system_control(struct gpib_board *board, int request_control) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_request_system_control(board, &priv->nec7210_priv, request_control); -} - -static void cec_interface_clear(struct gpib_board *board, int assert) -{ - struct cec_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void cec_remote_enable(struct gpib_board *board, int enable) -{ - struct cec_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int cec_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void cec_disable_eos(struct gpib_board *board) -{ - struct cec_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int cec_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int cec_primary_address(struct gpib_board *board, unsigned int address) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int cec_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int cec_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void cec_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct cec_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, config); -} - -static void cec_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct cec_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void cec_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct cec_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static u8 cec_serial_poll_status(struct gpib_board *board) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static int cec_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct cec_priv *priv = board->private_data; - - return nec7210_t1_delay(board, &priv->nec7210_priv, nano_sec); -} - -static void cec_return_to_local(struct gpib_board *board) -{ - struct cec_priv *priv = board->private_data; - - nec7210_return_to_local(board, &priv->nec7210_priv); -} - -static struct gpib_interface cec_pci_interface = { - .name = "cec_pci", - .attach = cec_pci_attach, - .detach = cec_pci_detach, - .read = cec_read, - .write = cec_write, - .command = cec_command, - .take_control = cec_take_control, - .go_to_standby = cec_go_to_standby, - .request_system_control = cec_request_system_control, - .interface_clear = cec_interface_clear, - .remote_enable = cec_remote_enable, - .enable_eos = cec_enable_eos, - .disable_eos = cec_disable_eos, - .parallel_poll = cec_parallel_poll, - .parallel_poll_configure = cec_parallel_poll_configure, - .parallel_poll_response = cec_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, // XXX - .update_status = cec_update_status, - .primary_address = cec_primary_address, - .secondary_address = cec_secondary_address, - .serial_poll_response = cec_serial_poll_response, - .serial_poll_status = cec_serial_poll_status, - .t1_delay = cec_t1_delay, - .return_to_local = cec_return_to_local, -}; - -static int cec_allocate_private(struct gpib_board *board) -{ - struct cec_priv *priv; - - board->private_data = kmalloc(sizeof(struct cec_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - priv = board->private_data; - memset(priv, 0, sizeof(struct cec_priv)); - init_nec7210_private(&priv->nec7210_priv); - return 0; -} - -static void cec_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static int cec_generic_attach(struct gpib_board *board) -{ - struct cec_priv *cec_priv; - struct nec7210_priv *nec_priv; - - board->status = 0; - - if (cec_allocate_private(board)) - return -ENOMEM; - cec_priv = board->private_data; - nec_priv = &cec_priv->nec7210_priv; - nec_priv->read_byte = nec7210_ioport_read_byte; - nec_priv->write_byte = nec7210_ioport_write_byte; - nec_priv->offset = cec_reg_offset; - nec_priv->type = NEC7210; // guess - return 0; -} - -static void cec_init(struct cec_priv *cec_priv, const struct gpib_board *board) -{ - struct nec7210_priv *nec_priv = &cec_priv->nec7210_priv; - - nec7210_board_reset(nec_priv, board); - - /* set internal counter register for 8 MHz input clock */ - write_byte(nec_priv, ICR | 8, AUXMR); - - nec7210_board_online(nec_priv, board); -} - -static int cec_pci_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct cec_priv *cec_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - int retval; - - retval = cec_generic_attach(board); - if (retval) - return retval; - - cec_priv = board->private_data; - nec_priv = &cec_priv->nec7210_priv; - - // find board - cec_priv->pci_device = NULL; - while ((cec_priv->pci_device = - gpib_pci_get_device(config, CEC_VENDOR_ID, - CEC_DEV_ID, cec_priv->pci_device))) { - // check for board with plx9050 controller - if (cec_priv->pci_device->subsystem_device == CEC_SUBID) - break; - } - if (!cec_priv->pci_device) { - dev_err(board->gpib_dev, "no cec PCI board found\n"); - return -ENODEV; - } - - if (pci_enable_device(cec_priv->pci_device)) { - dev_err(board->gpib_dev, "error enabling pci device\n"); - return -EIO; - } - - if (pci_request_regions(cec_priv->pci_device, "cec-gpib")) - return -EBUSY; - - cec_priv->plx_iobase = pci_resource_start(cec_priv->pci_device, 1); - nec_priv->iobase = pci_resource_start(cec_priv->pci_device, 3); - - isr_flags |= IRQF_SHARED; - if (request_irq(cec_priv->pci_device->irq, cec_interrupt, isr_flags, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to obtain IRQ %d\n", cec_priv->pci_device->irq); - return -EBUSY; - } - cec_priv->irq = cec_priv->pci_device->irq; - if (gpib_request_pseudo_irq(board, cec_interrupt)) { - dev_err(board->gpib_dev, "failed to allocate pseudo irq\n"); - return -1; - } - cec_init(cec_priv, board); - - // enable interrupts on plx chip - outl(PLX9050_LINTR1_EN_BIT | PLX9050_LINTR1_POLARITY_BIT | PLX9050_PCI_INTR_EN_BIT, - cec_priv->plx_iobase + PLX9050_INTCSR_REG); - - return 0; -} - -static void cec_pci_detach(struct gpib_board *board) -{ - struct cec_priv *cec_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (cec_priv) { - nec_priv = &cec_priv->nec7210_priv; - gpib_free_pseudo_irq(board); - if (cec_priv->irq) { - // disable plx9050 interrupts - outl(0, cec_priv->plx_iobase + PLX9050_INTCSR_REG); - free_irq(cec_priv->irq, board); - } - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - pci_release_regions(cec_priv->pci_device); - } - if (cec_priv->pci_device) - pci_dev_put(cec_priv->pci_device); - } - cec_free_private(board); -} - -static int cec_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - return 0; -} - -static const struct pci_device_id cec_pci_table[] = { - {CEC_VENDOR_ID, CEC_DEV_ID, PCI_ANY_ID, CEC_SUBID, 0, 0, 0 }, - {0} -}; -MODULE_DEVICE_TABLE(pci, cec_pci_table); - -static struct pci_driver cec_pci_driver = { - .name = DRV_NAME, - .id_table = cec_pci_table, - .probe = &cec_pci_probe -}; - -static int __init cec_init_module(void) -{ - int result; - - result = pci_register_driver(&cec_pci_driver); - if (result) { - pr_err("pci_register_driver failed: error = %d\n", result); - return result; - } - - result = gpib_register_driver(&cec_pci_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - return result; - } - - return 0; -} - -static void cec_exit_module(void) -{ - gpib_unregister_driver(&cec_pci_interface); - - pci_unregister_driver(&cec_pci_driver); -} - -module_init(cec_init_module); -module_exit(cec_exit_module); diff --git a/drivers/staging/gpib/common/Makefile b/drivers/staging/gpib/common/Makefile deleted file mode 100644 index 460586edb574..000000000000 --- a/drivers/staging/gpib/common/Makefile +++ /dev/null @@ -1,6 +0,0 @@ - -obj-$(CONFIG_GPIB_COMMON) += gpib_common.o - -gpib_common-objs := gpib_os.o iblib.o - - diff --git a/drivers/staging/gpib/common/gpib_os.c b/drivers/staging/gpib/common/gpib_os.c deleted file mode 100644 index 9dbbac8b8436..000000000000 --- a/drivers/staging/gpib/common/gpib_os.c +++ /dev/null @@ -1,2271 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2001, 2004 by Frank Mori Hess - *************************************************************************** - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt - -#include "ibsys.h" -#include <linux/module.h> -#include <linux/wait.h> -#include <linux/list.h> -#include <linux/fs.h> -#include <linux/pci.h> -#include <linux/device.h> -#include <linux/init.h> -#include <linux/string.h> -#include <linux/vmalloc.h> -#include <linux/fcntl.h> -#include <linux/kmod.h> -#include <linux/uaccess.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB base support"); -MODULE_ALIAS_CHARDEV_MAJOR(GPIB_CODE); - -static int board_type_ioctl(struct gpib_file_private *file_priv, - struct gpib_board *board, unsigned long arg); -static int read_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg); -static int write_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg); -static int command_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg); -static int open_dev_ioctl(struct file *filep, struct gpib_board *board, unsigned long arg); -static int close_dev_ioctl(struct file *filep, struct gpib_board *board, unsigned long arg); -static int serial_poll_ioctl(struct gpib_board *board, unsigned long arg); -static int wait_ioctl(struct gpib_file_private *file_priv, - struct gpib_board *board, unsigned long arg); -static int parallel_poll_ioctl(struct gpib_board *board, unsigned long arg); -static int online_ioctl(struct gpib_board *board, unsigned long arg); -static int remote_enable_ioctl(struct gpib_board *board, unsigned long arg); -static int take_control_ioctl(struct gpib_board *board, unsigned long arg); -static int line_status_ioctl(struct gpib_board *board, unsigned long arg); -static int pad_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg); -static int sad_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg); -static int eos_ioctl(struct gpib_board *board, unsigned long arg); -static int request_service_ioctl(struct gpib_board *board, unsigned long arg); -static int request_service2_ioctl(struct gpib_board *board, unsigned long arg); -static int iobase_ioctl(struct gpib_board_config *config, unsigned long arg); -static int irq_ioctl(struct gpib_board_config *config, unsigned long arg); -static int dma_ioctl(struct gpib_board_config *config, unsigned long arg); -static int autospoll_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg); -static int mutex_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg); -static int timeout_ioctl(struct gpib_board *board, unsigned long arg); -static int status_bytes_ioctl(struct gpib_board *board, unsigned long arg); -static int board_info_ioctl(const struct gpib_board *board, unsigned long arg); -static int ppc_ioctl(struct gpib_board *board, unsigned long arg); -static int set_local_ppoll_mode_ioctl(struct gpib_board *board, unsigned long arg); -static int get_local_ppoll_mode_ioctl(struct gpib_board *board, unsigned long arg); -static int query_board_rsv_ioctl(struct gpib_board *board, unsigned long arg); -static int interface_clear_ioctl(struct gpib_board *board, unsigned long arg); -static int select_pci_ioctl(struct gpib_board_config *config, unsigned long arg); -static int select_device_path_ioctl(struct gpib_board_config *config, unsigned long arg); -static int event_ioctl(struct gpib_board *board, unsigned long arg); -static int request_system_control_ioctl(struct gpib_board *board, unsigned long arg); -static int t1_delay_ioctl(struct gpib_board *board, unsigned long arg); - -static int cleanup_open_devices(struct gpib_file_private *file_priv, struct gpib_board *board); - -static int pop_gpib_event_nolock(struct gpib_board *board, - struct gpib_event_queue *queue, short *event_type); - -/* - * Timer functions - */ - -/* Watchdog timeout routine */ - -static void watchdog_timeout(struct timer_list *t) -{ - struct gpib_board *board = timer_container_of(board, t, timer); - - set_bit(TIMO_NUM, &board->status); - wake_up_interruptible(&board->wait); -} - -/* install timer interrupt handler */ -void os_start_timer(struct gpib_board *board, unsigned int usec_timeout) -/* Starts the timeout task */ -{ - if (timer_pending(&board->timer)) { - dev_err(board->gpib_dev, "bug! timer already running?\n"); - return; - } - clear_bit(TIMO_NUM, &board->status); - - if (usec_timeout > 0) { - board->timer.function = watchdog_timeout; - /* set number of ticks */ - mod_timer(&board->timer, jiffies + usec_to_jiffies(usec_timeout)); - } -} - -void os_remove_timer(struct gpib_board *board) -/* Removes the timeout task */ -{ - if (timer_pending(&board->timer)) - timer_delete_sync(&board->timer); -} - -int io_timed_out(struct gpib_board *board) -{ - if (test_bit(TIMO_NUM, &board->status)) - return 1; - return 0; -} - -/* - * this is a function instead of a constant because of Suse - * defining HZ to be a function call to get_hz() - */ -static inline int pseudo_irq_period(void) -{ - return (HZ + 99) / 100; -} - -static void pseudo_irq_handler(struct timer_list *t) -{ - struct gpib_pseudo_irq *pseudo_irq = timer_container_of(pseudo_irq, t, - timer); - - if (pseudo_irq->handler) - pseudo_irq->handler(0, pseudo_irq->board); - else - pr_err("gpib: bug! pseudo_irq.handler is NULL\n"); - - if (atomic_read(&pseudo_irq->active)) - mod_timer(&pseudo_irq->timer, jiffies + pseudo_irq_period()); -} - -int gpib_request_pseudo_irq(struct gpib_board *board, irqreturn_t (*handler)(int, void *)) -{ - if (timer_pending(&board->pseudo_irq.timer) || board->pseudo_irq.handler) { - dev_err(board->gpib_dev, "only one pseudo interrupt per board allowed\n"); - return -1; - } - - board->pseudo_irq.handler = handler; - board->pseudo_irq.timer.function = pseudo_irq_handler; - board->pseudo_irq.board = board; - - atomic_set(&board->pseudo_irq.active, 1); - - mod_timer(&board->pseudo_irq.timer, jiffies + pseudo_irq_period()); - - return 0; -} -EXPORT_SYMBOL(gpib_request_pseudo_irq); - -void gpib_free_pseudo_irq(struct gpib_board *board) -{ - atomic_set(&board->pseudo_irq.active, 0); - - timer_delete_sync(&board->pseudo_irq.timer); - board->pseudo_irq.handler = NULL; -} -EXPORT_SYMBOL(gpib_free_pseudo_irq); - -static const unsigned int serial_timeout = 1000000; - -unsigned int num_status_bytes(const struct gpib_status_queue *dev) -{ - if (!dev) - return 0; - return dev->num_status_bytes; -} - -// push status byte onto back of status byte fifo -int push_status_byte(struct gpib_board *board, struct gpib_status_queue *device, u8 poll_byte) -{ - struct list_head *head = &device->status_bytes; - struct gpib_status_byte *status; - static const unsigned int max_num_status_bytes = 1024; - int retval; - - if (num_status_bytes(device) >= max_num_status_bytes) { - u8 lost_byte; - - device->dropped_byte = 1; - retval = pop_status_byte(board, device, &lost_byte); - if (retval < 0) - return retval; - } - - status = kmalloc(sizeof(*status), GFP_KERNEL); - if (!status) - return -ENOMEM; - - INIT_LIST_HEAD(&status->list); - status->poll_byte = poll_byte; - - list_add_tail(&status->list, head); - - device->num_status_bytes++; - - dev_dbg(board->gpib_dev, "pushed status byte 0x%x, %i in queue\n", - (int)poll_byte, num_status_bytes(device)); - - return 0; -} - -// pop status byte from front of status byte fifo -int pop_status_byte(struct gpib_board *board, struct gpib_status_queue *device, u8 *poll_byte) -{ - struct list_head *head = &device->status_bytes; - struct list_head *front = head->next; - struct gpib_status_byte *status; - - if (num_status_bytes(device) == 0) - return -EIO; - - if (front == head) - return -EIO; - - if (device->dropped_byte) { - device->dropped_byte = 0; - return -EPIPE; - } - - status = list_entry(front, struct gpib_status_byte, list); - *poll_byte = status->poll_byte; - - list_del(front); - kfree(status); - - device->num_status_bytes--; - - dev_dbg(board->gpib_dev, "popped status byte 0x%x, %i in queue\n", - (int)*poll_byte, num_status_bytes(device)); - - return 0; -} - -struct gpib_status_queue *get_gpib_status_queue(struct gpib_board *board, unsigned int pad, int sad) -{ - struct gpib_status_queue *device; - struct list_head *list_ptr; - const struct list_head *head = &board->device_list; - - for (list_ptr = head->next; list_ptr != head; list_ptr = list_ptr->next) { - device = list_entry(list_ptr, struct gpib_status_queue, list); - if (gpib_address_equal(device->pad, device->sad, pad, sad)) - return device; - } - - return NULL; -} - -int get_serial_poll_byte(struct gpib_board *board, unsigned int pad, int sad, - unsigned int usec_timeout, u8 *poll_byte) -{ - struct gpib_status_queue *device; - - device = get_gpib_status_queue(board, pad, sad); - if (num_status_bytes(device)) - return pop_status_byte(board, device, poll_byte); - else - return dvrsp(board, pad, sad, usec_timeout, poll_byte); -} - -int autopoll_all_devices(struct gpib_board *board) -{ - int retval; - - if (mutex_lock_interruptible(&board->user_mutex)) - return -ERESTARTSYS; - if (mutex_lock_interruptible(&board->big_gpib_mutex)) { - mutex_unlock(&board->user_mutex); - return -ERESTARTSYS; - } - - dev_dbg(board->gpib_dev, "autopoll has board lock\n"); - - retval = serial_poll_all(board, serial_timeout); - if (retval < 0) { - mutex_unlock(&board->big_gpib_mutex); - mutex_unlock(&board->user_mutex); - return retval; - } - - dev_dbg(board->gpib_dev, "complete\n"); - /* - * need to wake wait queue in case someone is - * waiting on RQS - */ - wake_up_interruptible(&board->wait); - mutex_unlock(&board->big_gpib_mutex); - mutex_unlock(&board->user_mutex); - - return retval; -} - -static int setup_serial_poll(struct gpib_board *board, unsigned int usec_timeout) -{ - u8 cmd_string[8]; - int i; - size_t bytes_written; - int ret; - - os_start_timer(board, usec_timeout); - ret = ibcac(board, 1, 1); - if (ret < 0) { - os_remove_timer(board); - return ret; - } - - i = 0; - cmd_string[i++] = UNL; - cmd_string[i++] = MLA(board->pad); /* controller's listen address */ - if (board->sad >= 0) - cmd_string[i++] = MSA(board->sad); - cmd_string[i++] = SPE; // serial poll enable - - ret = board->interface->command(board, cmd_string, i, &bytes_written); - if (ret < 0 || bytes_written < i) { - dev_dbg(board->gpib_dev, "failed to setup serial poll\n"); - os_remove_timer(board); - return -EIO; - } - os_remove_timer(board); - - return 0; -} - -static int read_serial_poll_byte(struct gpib_board *board, unsigned int pad, - int sad, unsigned int usec_timeout, u8 *result) -{ - u8 cmd_string[8]; - int end_flag; - int ret; - int i; - size_t nbytes; - - dev_dbg(board->gpib_dev, "entering pad=%i sad=%i\n", pad, sad); - - os_start_timer(board, usec_timeout); - ret = ibcac(board, 1, 1); - if (ret < 0) { - os_remove_timer(board); - return ret; - } - - i = 0; - // send talk address - cmd_string[i++] = MTA(pad); - if (sad >= 0) - cmd_string[i++] = MSA(sad); - - ret = board->interface->command(board, cmd_string, i, &nbytes); - if (ret < 0 || nbytes < i) { - dev_err(board->gpib_dev, "failed to setup serial poll\n"); - os_remove_timer(board); - return -EIO; - } - - ibgts(board); - - // read poll result - ret = board->interface->read(board, result, 1, &end_flag, &nbytes); - if (ret < 0 || nbytes < 1) { - dev_err(board->gpib_dev, "serial poll failed\n"); - os_remove_timer(board); - return -EIO; - } - os_remove_timer(board); - - return 0; -} - -static int cleanup_serial_poll(struct gpib_board *board, unsigned int usec_timeout) -{ - u8 cmd_string[8]; - int ret; - size_t bytes_written; - - os_start_timer(board, usec_timeout); - ret = ibcac(board, 1, 1); - if (ret < 0) { - os_remove_timer(board); - return ret; - } - - cmd_string[0] = SPD; /* disable serial poll bytes */ - cmd_string[1] = UNT; - ret = board->interface->command(board, cmd_string, 2, &bytes_written); - if (ret < 0 || bytes_written < 2) { - dev_err(board->gpib_dev, "failed to disable serial poll\n"); - os_remove_timer(board); - return -EIO; - } - os_remove_timer(board); - - return 0; -} - -static int serial_poll_single(struct gpib_board *board, unsigned int pad, int sad, - unsigned int usec_timeout, u8 *result) -{ - int retval, cleanup_retval; - - retval = setup_serial_poll(board, usec_timeout); - if (retval < 0) - return retval; - retval = read_serial_poll_byte(board, pad, sad, usec_timeout, result); - cleanup_retval = cleanup_serial_poll(board, usec_timeout); - if (retval < 0) - return retval; - if (cleanup_retval < 0) - return retval; - - return 0; -} - -int serial_poll_all(struct gpib_board *board, unsigned int usec_timeout) -{ - int retval = 0; - struct list_head *cur; - const struct list_head *head = NULL; - struct gpib_status_queue *device; - u8 result; - unsigned int num_bytes = 0; - - head = &board->device_list; - if (head->next == head) - return 0; - - retval = setup_serial_poll(board, usec_timeout); - if (retval < 0) - return retval; - - for (cur = head->next; cur != head; cur = cur->next) { - device = list_entry(cur, struct gpib_status_queue, list); - retval = read_serial_poll_byte(board, - device->pad, device->sad, usec_timeout, &result); - if (retval < 0) - continue; - if (result & request_service_bit) { - retval = push_status_byte(board, device, result); - if (retval < 0) - continue; - num_bytes++; - } - } - - retval = cleanup_serial_poll(board, usec_timeout); - if (retval < 0) - return retval; - - return num_bytes; -} - -/* - * DVRSP - * This function performs a serial poll of the device with primary - * address pad and secondary address sad. If the device has no - * secondary address, pass a negative number in for this argument. At the - * end of a successful serial poll the response is returned in result. - * SPD and UNT are sent at the completion of the poll. - */ - -int dvrsp(struct gpib_board *board, unsigned int pad, int sad, - unsigned int usec_timeout, u8 *result) -{ - int status = ibstatus(board); - int retval; - - if ((status & CIC) == 0) { - dev_err(board->gpib_dev, "not CIC during serial poll\n"); - return -1; - } - - if (pad > MAX_GPIB_PRIMARY_ADDRESS || sad > MAX_GPIB_SECONDARY_ADDRESS || sad < -1) { - dev_err(board->gpib_dev, "bad address for serial poll"); - return -1; - } - - retval = serial_poll_single(board, pad, sad, usec_timeout, result); - if (io_timed_out(board)) - retval = -ETIMEDOUT; - - return retval; -} - -static struct gpib_descriptor *handle_to_descriptor(const struct gpib_file_private *file_priv, - int handle) -{ - if (handle < 0 || handle >= GPIB_MAX_NUM_DESCRIPTORS) { - pr_err("gpib: invalid handle %i\n", handle); - return NULL; - } - - return file_priv->descriptors[handle]; -} - -static int init_gpib_file_private(struct gpib_file_private *priv) -{ - memset(priv, 0, sizeof(*priv)); - atomic_set(&priv->holding_mutex, 0); - priv->descriptors[0] = kmalloc(sizeof(struct gpib_descriptor), GFP_KERNEL); - if (!priv->descriptors[0]) { - pr_err("gpib: failed to allocate default board descriptor\n"); - return -ENOMEM; - } - init_gpib_descriptor(priv->descriptors[0]); - priv->descriptors[0]->is_board = 1; - mutex_init(&priv->descriptors_mutex); - return 0; -} - -int ibopen(struct inode *inode, struct file *filep) -{ - unsigned int minor = iminor(inode); - struct gpib_board *board; - struct gpib_file_private *priv; - - if (minor >= GPIB_MAX_NUM_BOARDS) { - pr_err("gpib: invalid minor number of device file\n"); - return -ENXIO; - } - - board = &board_array[minor]; - - filep->private_data = kmalloc(sizeof(struct gpib_file_private), GFP_KERNEL); - if (!filep->private_data) - return -ENOMEM; - - priv = filep->private_data; - init_gpib_file_private((struct gpib_file_private *)filep->private_data); - - if (board->use_count == 0) { - int retval; - - retval = request_module("gpib%i", minor); - if (retval) - dev_dbg(board->gpib_dev, "request module returned %i\n", retval); - } - if (board->interface) { - if (!try_module_get(board->provider_module)) { - dev_err(board->gpib_dev, "try_module_get() failed\n"); - return -EIO; - } - board->use_count++; - priv->got_module = 1; - } - return 0; -} - -int ibclose(struct inode *inode, struct file *filep) -{ - unsigned int minor = iminor(inode); - struct gpib_board *board; - struct gpib_file_private *priv = filep->private_data; - struct gpib_descriptor *desc; - - if (minor >= GPIB_MAX_NUM_BOARDS) { - pr_err("gpib: invalid minor number of device file\n"); - return -ENODEV; - } - - board = &board_array[minor]; - - if (priv) { - desc = handle_to_descriptor(priv, 0); - if (desc) { - if (desc->autopoll_enabled) { - dev_dbg(board->gpib_dev, "decrementing autospollers\n"); - if (board->autospollers > 0) - board->autospollers--; - else - dev_err(board->gpib_dev, - "Attempt to decrement zero autospollers\n"); - } - } else { - dev_err(board->gpib_dev, "Unexpected null gpib_descriptor\n"); - } - - cleanup_open_devices(priv, board); - - if (atomic_read(&priv->holding_mutex)) - mutex_unlock(&board->user_mutex); - - if (priv->got_module && board->use_count) { - module_put(board->provider_module); - --board->use_count; - } - - kfree(filep->private_data); - filep->private_data = NULL; - } - - return 0; -} - -long ibioctl(struct file *filep, unsigned int cmd, unsigned long arg) -{ - unsigned int minor = iminor(file_inode(filep)); - struct gpib_board *board; - struct gpib_file_private *file_priv = filep->private_data; - long retval = -ENOTTY; - - if (minor >= GPIB_MAX_NUM_BOARDS) { - pr_err("gpib: invalid minor number of device file\n"); - return -ENODEV; - } - board = &board_array[minor]; - - if (mutex_lock_interruptible(&board->big_gpib_mutex)) - return -ERESTARTSYS; - - dev_dbg(board->gpib_dev, "ioctl %d, interface=%s, use=%d, onl=%d\n", - cmd & 0xff, - board->interface ? board->interface->name : "", - board->use_count, - board->online); - - switch (cmd) { - case CFCBOARDTYPE: - retval = board_type_ioctl(file_priv, board, arg); - goto done; - case IBONL: - retval = online_ioctl(board, arg); - goto done; - default: - break; - } - if (!board->interface) { - dev_err(board->gpib_dev, "no gpib board configured\n"); - retval = -ENODEV; - goto done; - } - if (file_priv->got_module == 0) { - if (!try_module_get(board->provider_module)) { - dev_err(board->gpib_dev, "try_module_get() failed\n"); - retval = -EIO; - goto done; - } - file_priv->got_module = 1; - board->use_count++; - } - switch (cmd) { - case CFCBASE: - retval = iobase_ioctl(&board->config, arg); - goto done; - case CFCIRQ: - retval = irq_ioctl(&board->config, arg); - goto done; - case CFCDMA: - retval = dma_ioctl(&board->config, arg); - goto done; - case IBAUTOSPOLL: - retval = autospoll_ioctl(board, file_priv, arg); - goto done; - case IBBOARD_INFO: - retval = board_info_ioctl(board, arg); - goto done; - case IBMUTEX: - /* - * Need to unlock board->big_gpib_mutex before potentially locking board->user_mutex - * to maintain consistent locking order - */ - mutex_unlock(&board->big_gpib_mutex); - return mutex_ioctl(board, file_priv, arg); - case IBPAD: - retval = pad_ioctl(board, file_priv, arg); - goto done; - case IBSAD: - retval = sad_ioctl(board, file_priv, arg); - goto done; - case IBSELECT_PCI: - retval = select_pci_ioctl(&board->config, arg); - goto done; - case IBSELECT_DEVICE_PATH: - retval = select_device_path_ioctl(&board->config, arg); - goto done; - default: - break; - } - - if (!board->online) { - retval = -EINVAL; - goto done; - } - - switch (cmd) { - case IBEVENT: - retval = event_ioctl(board, arg); - goto done; - case IBCLOSEDEV: - retval = close_dev_ioctl(filep, board, arg); - goto done; - case IBOPENDEV: - retval = open_dev_ioctl(filep, board, arg); - goto done; - case IBSPOLL_BYTES: - retval = status_bytes_ioctl(board, arg); - goto done; - case IBWAIT: - retval = wait_ioctl(file_priv, board, arg); - if (retval == -ERESTARTSYS) - return retval; - goto done; - case IBLINES: - retval = line_status_ioctl(board, arg); - goto done; - case IBLOC: - board->interface->return_to_local(board); - retval = 0; - goto done; - default: - break; - } - - spin_lock(&board->locking_pid_spinlock); - if (current->pid != board->locking_pid) { - spin_unlock(&board->locking_pid_spinlock); - retval = -EPERM; - goto done; - } - spin_unlock(&board->locking_pid_spinlock); - - switch (cmd) { - case IB_T1_DELAY: - retval = t1_delay_ioctl(board, arg); - goto done; - case IBCAC: - retval = take_control_ioctl(board, arg); - goto done; - case IBCMD: - /* - * IO ioctls can take a long time, we need to unlock board->big_gpib_mutex - * before we call them. - */ - mutex_unlock(&board->big_gpib_mutex); - return command_ioctl(file_priv, board, arg); - case IBEOS: - retval = eos_ioctl(board, arg); - goto done; - case IBGTS: - retval = ibgts(board); - goto done; - case IBPPC: - retval = ppc_ioctl(board, arg); - goto done; - case IBPP2_SET: - retval = set_local_ppoll_mode_ioctl(board, arg); - goto done; - case IBPP2_GET: - retval = get_local_ppoll_mode_ioctl(board, arg); - goto done; - case IBQUERY_BOARD_RSV: - retval = query_board_rsv_ioctl(board, arg); - goto done; - case IBRD: - /* - * IO ioctls can take a long time, we need to unlock board->big_gpib_mutex - * before we call them. - */ - mutex_unlock(&board->big_gpib_mutex); - return read_ioctl(file_priv, board, arg); - case IBRPP: - retval = parallel_poll_ioctl(board, arg); - goto done; - case IBRSC: - retval = request_system_control_ioctl(board, arg); - goto done; - case IBRSP: - retval = serial_poll_ioctl(board, arg); - goto done; - case IBRSV: - retval = request_service_ioctl(board, arg); - goto done; - case IBRSV2: - retval = request_service2_ioctl(board, arg); - goto done; - case IBSIC: - retval = interface_clear_ioctl(board, arg); - goto done; - case IBSRE: - retval = remote_enable_ioctl(board, arg); - goto done; - case IBTMO: - retval = timeout_ioctl(board, arg); - goto done; - case IBWRT: - /* - * IO ioctls can take a long time, we need to unlock board->big_gpib_mutex - * before we call them. - */ - mutex_unlock(&board->big_gpib_mutex); - return write_ioctl(file_priv, board, arg); - default: - retval = -ENOTTY; - goto done; - } - -done: - mutex_unlock(&board->big_gpib_mutex); - dev_dbg(board->gpib_dev, "ioctl done status = 0x%lx\n", board->status); - return retval; -} - -static int board_type_ioctl(struct gpib_file_private *file_priv, - struct gpib_board *board, unsigned long arg) -{ - struct list_head *list_ptr; - struct gpib_board_type_ioctl cmd; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - if (board->online) - return -EBUSY; - - retval = copy_from_user(&cmd, (void __user *)arg, - sizeof(struct gpib_board_type_ioctl)); - if (retval) - return -EFAULT; - - for (list_ptr = registered_drivers.next; list_ptr != ®istered_drivers; - list_ptr = list_ptr->next) { - struct gpib_interface_list *entry; - - entry = list_entry(list_ptr, struct gpib_interface_list, list); - if (strcmp(entry->interface->name, cmd.name) == 0) { - int i; - int had_module = file_priv->got_module; - - if (board->use_count) { - for (i = 0; i < board->use_count; ++i) - module_put(board->provider_module); - board->interface = NULL; - file_priv->got_module = 0; - } - board->interface = entry->interface; - board->provider_module = entry->module; - for (i = 0; i < board->use_count; ++i) { - if (!try_module_get(entry->module)) { - board->use_count = i; - return -EIO; - } - } - if (had_module == 0) { - if (!try_module_get(entry->module)) - return -EIO; - ++board->use_count; - } - file_priv->got_module = 1; - return 0; - } - } - - return -EINVAL; -} - -static int read_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg) -{ - struct gpib_read_write_ioctl read_cmd; - u8 __user *userbuf; - unsigned long remain; - int end_flag = 0; - int retval; - ssize_t read_ret = 0; - struct gpib_descriptor *desc; - size_t nbytes; - - retval = copy_from_user(&read_cmd, (void __user *)arg, sizeof(read_cmd)); - if (retval) - return -EFAULT; - - if (read_cmd.completed_transfer_count > read_cmd.requested_transfer_count) - return -EINVAL; - - desc = handle_to_descriptor(file_priv, read_cmd.handle); - if (!desc) - return -EINVAL; - - if (WARN_ON_ONCE(sizeof(userbuf) > sizeof(read_cmd.buffer_ptr))) - return -EFAULT; - - userbuf = (u8 __user *)(unsigned long)read_cmd.buffer_ptr; - userbuf += read_cmd.completed_transfer_count; - - remain = read_cmd.requested_transfer_count - read_cmd.completed_transfer_count; - - /* Check write access to buffer */ - if (!access_ok(userbuf, remain)) - return -EFAULT; - - atomic_set(&desc->io_in_progress, 1); - - /* Read buffer loads till we fill the user supplied buffer */ - while (remain > 0 && end_flag == 0) { - nbytes = 0; - read_ret = ibrd(board, board->buffer, (board->buffer_length < remain) ? - board->buffer_length : remain, &end_flag, &nbytes); - if (nbytes == 0) - break; - retval = copy_to_user(userbuf, board->buffer, nbytes); - if (retval) { - retval = -EFAULT; - break; - } - remain -= nbytes; - userbuf += nbytes; - if (read_ret < 0) - break; - } - read_cmd.completed_transfer_count = read_cmd.requested_transfer_count - remain; - read_cmd.end = end_flag; - /* - * suppress errors (for example due to timeout or interruption by device clear) - * if all bytes got sent. This prevents races that can occur in the various drivers - * if a device receives a device clear immediately after a transfer completes and - * the driver code wasn't careful enough to handle that case. - */ - if (remain == 0 || end_flag) - read_ret = 0; - if (retval == 0) - retval = copy_to_user((void __user *)arg, &read_cmd, sizeof(read_cmd)); - - atomic_set(&desc->io_in_progress, 0); - - wake_up_interruptible(&board->wait); - if (retval) - return -EFAULT; - - return read_ret; -} - -static int command_ioctl(struct gpib_file_private *file_priv, - struct gpib_board *board, unsigned long arg) -{ - struct gpib_read_write_ioctl cmd; - u8 __user *userbuf; - unsigned long remain; - int retval; - int fault = 0; - struct gpib_descriptor *desc; - size_t bytes_written; - int no_clear_io_in_prog; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - if (cmd.completed_transfer_count > cmd.requested_transfer_count) - return -EINVAL; - - desc = handle_to_descriptor(file_priv, cmd.handle); - if (!desc) - return -EINVAL; - - userbuf = (u8 __user *)(unsigned long)cmd.buffer_ptr; - userbuf += cmd.completed_transfer_count; - - no_clear_io_in_prog = cmd.end; - cmd.end = 0; - - remain = cmd.requested_transfer_count - cmd.completed_transfer_count; - - /* Check read access to buffer */ - if (!access_ok(userbuf, remain)) - return -EFAULT; - - /* - * Write buffer loads till we empty the user supplied buffer. - * Call drivers at least once, even if remain is zero, in - * order to allow them to insure previous commands were - * completely finished, in the case of a restarted ioctl. - */ - - atomic_set(&desc->io_in_progress, 1); - - do { - fault = copy_from_user(board->buffer, userbuf, (board->buffer_length < remain) ? - board->buffer_length : remain); - if (fault) { - retval = -EFAULT; - bytes_written = 0; - } else { - retval = ibcmd(board, board->buffer, (board->buffer_length < remain) ? - board->buffer_length : remain, &bytes_written); - } - remain -= bytes_written; - userbuf += bytes_written; - if (retval < 0) { - atomic_set(&desc->io_in_progress, 0); - - wake_up_interruptible(&board->wait); - break; - } - } while (remain > 0); - - cmd.completed_transfer_count = cmd.requested_transfer_count - remain; - - if (fault == 0) - fault = copy_to_user((void __user *)arg, &cmd, sizeof(cmd)); - - /* - * no_clear_io_in_prog (cmd.end) is true when io_in_progress should - * not be set to zero because the cmd in progress is the address setup - * operation for an async read or write. This causes CMPL not to be set - * in general_ibstatus until the async read or write completes. - */ - if (!no_clear_io_in_prog || fault) - atomic_set(&desc->io_in_progress, 0); - - wake_up_interruptible(&board->wait); - if (fault) - return -EFAULT; - - return retval; -} - -static int write_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg) -{ - struct gpib_read_write_ioctl write_cmd; - u8 __user *userbuf; - unsigned long remain; - int retval = 0; - int fault; - struct gpib_descriptor *desc; - - fault = copy_from_user(&write_cmd, (void __user *)arg, sizeof(write_cmd)); - if (fault) - return -EFAULT; - - if (write_cmd.completed_transfer_count > write_cmd.requested_transfer_count) - return -EINVAL; - - desc = handle_to_descriptor(file_priv, write_cmd.handle); - if (!desc) - return -EINVAL; - - userbuf = (u8 __user *)(unsigned long)write_cmd.buffer_ptr; - userbuf += write_cmd.completed_transfer_count; - - remain = write_cmd.requested_transfer_count - write_cmd.completed_transfer_count; - - /* Check read access to buffer */ - if (!access_ok(userbuf, remain)) - return -EFAULT; - - atomic_set(&desc->io_in_progress, 1); - - /* Write buffer loads till we empty the user supplied buffer */ - while (remain > 0) { - int send_eoi; - size_t bytes_written = 0; - - send_eoi = remain <= board->buffer_length && write_cmd.end; - fault = copy_from_user(board->buffer, userbuf, (board->buffer_length < remain) ? - board->buffer_length : remain); - if (fault) { - retval = -EFAULT; - break; - } - retval = ibwrt(board, board->buffer, (board->buffer_length < remain) ? - board->buffer_length : remain, send_eoi, &bytes_written); - remain -= bytes_written; - userbuf += bytes_written; - if (retval < 0) - break; - } - write_cmd.completed_transfer_count = write_cmd.requested_transfer_count - remain; - /* - * suppress errors (for example due to timeout or interruption by device clear) - * if all bytes got sent. This prevents races that can occur in the various drivers - * if a device receives a device clear immediately after a transfer completes and - * the driver code wasn't careful enough to handle that case. - */ - if (remain == 0) - retval = 0; - if (fault == 0) - fault = copy_to_user((void __user *)arg, &write_cmd, sizeof(write_cmd)); - - atomic_set(&desc->io_in_progress, 0); - - wake_up_interruptible(&board->wait); - if (fault) - return -EFAULT; - - return retval; -} - -static int status_bytes_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_status_queue *device; - struct gpib_spoll_bytes_ioctl cmd; - int retval; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - device = get_gpib_status_queue(board, cmd.pad, cmd.sad); - if (!device) - cmd.num_bytes = 0; - else - cmd.num_bytes = num_status_bytes(device); - - retval = copy_to_user((void __user *)arg, &cmd, sizeof(cmd)); - if (retval) - return -EFAULT; - - return 0; -} - -static int increment_open_device_count(struct gpib_board *board, struct list_head *head, - unsigned int pad, int sad) -{ - struct list_head *list_ptr; - struct gpib_status_queue *device; - - /* - * first see if address has already been opened, then increment - * open count - */ - for (list_ptr = head->next; list_ptr != head; list_ptr = list_ptr->next) { - device = list_entry(list_ptr, struct gpib_status_queue, list); - if (gpib_address_equal(device->pad, device->sad, pad, sad)) { - dev_dbg(board->gpib_dev, "incrementing open count for pad %i, sad %i\n", - device->pad, device->sad); - device->reference_count++; - return 0; - } - } - - /* otherwise we need to allocate a new struct gpib_status_queue */ - device = kmalloc(sizeof(struct gpib_status_queue), GFP_ATOMIC); - if (!device) - return -ENOMEM; - init_gpib_status_queue(device); - device->pad = pad; - device->sad = sad; - device->reference_count = 1; - - list_add(&device->list, head); - - dev_dbg(board->gpib_dev, "opened pad %i, sad %i\n", device->pad, device->sad); - - return 0; -} - -static int subtract_open_device_count(struct gpib_board *board, struct list_head *head, - unsigned int pad, int sad, unsigned int count) -{ - struct gpib_status_queue *device; - struct list_head *list_ptr; - - for (list_ptr = head->next; list_ptr != head; list_ptr = list_ptr->next) { - device = list_entry(list_ptr, struct gpib_status_queue, list); - if (gpib_address_equal(device->pad, device->sad, pad, sad)) { - dev_dbg(board->gpib_dev, "decrementing open count for pad %i, sad %i\n", - device->pad, device->sad); - if (count > device->reference_count) { - dev_err(board->gpib_dev, "bug! in %s()\n", __func__); - return -EINVAL; - } - device->reference_count -= count; - if (device->reference_count == 0) { - dev_dbg(board->gpib_dev, "closing pad %i, sad %i\n", - device->pad, device->sad); - list_del(list_ptr); - kfree(device); - } - return 0; - } - } - dev_err(board->gpib_dev, "bug! tried to close address that was never opened!\n"); - return -EINVAL; -} - -static inline int decrement_open_device_count(struct gpib_board *board, struct list_head *head, - unsigned int pad, int sad) -{ - return subtract_open_device_count(board, head, pad, sad, 1); -} - -static int cleanup_open_devices(struct gpib_file_private *file_priv, struct gpib_board *board) -{ - int retval = 0; - int i; - - for (i = 0; i < GPIB_MAX_NUM_DESCRIPTORS; i++) { - struct gpib_descriptor *desc; - - desc = file_priv->descriptors[i]; - if (!desc) - continue; - - if (desc->is_board == 0) { - retval = decrement_open_device_count(board, &board->device_list, desc->pad, - desc->sad); - if (retval < 0) - return retval; - } - kfree(desc); - file_priv->descriptors[i] = NULL; - } - - return 0; -} - -static int open_dev_ioctl(struct file *filep, struct gpib_board *board, unsigned long arg) -{ - struct gpib_open_dev_ioctl open_dev_cmd; - int retval; - struct gpib_file_private *file_priv = filep->private_data; - int i; - - retval = copy_from_user(&open_dev_cmd, (void __user *)arg, sizeof(open_dev_cmd)); - if (retval) - return -EFAULT; - - if (mutex_lock_interruptible(&file_priv->descriptors_mutex)) - return -ERESTARTSYS; - for (i = 0; i < GPIB_MAX_NUM_DESCRIPTORS; i++) - if (!file_priv->descriptors[i]) - break; - if (i == GPIB_MAX_NUM_DESCRIPTORS) { - mutex_unlock(&file_priv->descriptors_mutex); - return -ERANGE; - } - file_priv->descriptors[i] = kmalloc(sizeof(struct gpib_descriptor), GFP_KERNEL); - if (!file_priv->descriptors[i]) { - mutex_unlock(&file_priv->descriptors_mutex); - return -ENOMEM; - } - init_gpib_descriptor(file_priv->descriptors[i]); - - file_priv->descriptors[i]->pad = open_dev_cmd.pad; - file_priv->descriptors[i]->sad = open_dev_cmd.sad; - file_priv->descriptors[i]->is_board = open_dev_cmd.is_board; - mutex_unlock(&file_priv->descriptors_mutex); - - retval = increment_open_device_count(board, &board->device_list, open_dev_cmd.pad, - open_dev_cmd.sad); - if (retval < 0) - return retval; - - /* - * clear stuck srq state, since we may be able to find service request on - * the new device - */ - atomic_set(&board->stuck_srq, 0); - - open_dev_cmd.handle = i; - retval = copy_to_user((void __user *)arg, &open_dev_cmd, sizeof(open_dev_cmd)); - if (retval) - return -EFAULT; - - return 0; -} - -static int close_dev_ioctl(struct file *filep, struct gpib_board *board, unsigned long arg) -{ - struct gpib_close_dev_ioctl cmd; - struct gpib_file_private *file_priv = filep->private_data; - int retval; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - if (cmd.handle >= GPIB_MAX_NUM_DESCRIPTORS) - return -EINVAL; - if (!file_priv->descriptors[cmd.handle]) - return -EINVAL; - - retval = decrement_open_device_count(board, &board->device_list, - file_priv->descriptors[cmd.handle]->pad, - file_priv->descriptors[cmd.handle]->sad); - if (retval < 0) - return retval; - - kfree(file_priv->descriptors[cmd.handle]); - file_priv->descriptors[cmd.handle] = NULL; - - return 0; -} - -static int serial_poll_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_serial_poll_ioctl serial_cmd; - int retval; - - retval = copy_from_user(&serial_cmd, (void __user *)arg, sizeof(serial_cmd)); - if (retval) - return -EFAULT; - - retval = get_serial_poll_byte(board, serial_cmd.pad, serial_cmd.sad, board->usec_timeout, - &serial_cmd.status_byte); - if (retval < 0) - return retval; - - retval = copy_to_user((void __user *)arg, &serial_cmd, sizeof(serial_cmd)); - if (retval) - return -EFAULT; - - return 0; -} - -static int wait_ioctl(struct gpib_file_private *file_priv, struct gpib_board *board, - unsigned long arg) -{ - struct gpib_wait_ioctl wait_cmd; - int retval; - struct gpib_descriptor *desc; - - retval = copy_from_user(&wait_cmd, (void __user *)arg, sizeof(wait_cmd)); - if (retval) - return -EFAULT; - - desc = handle_to_descriptor(file_priv, wait_cmd.handle); - if (!desc) - return -EINVAL; - - retval = ibwait(board, wait_cmd.wait_mask, wait_cmd.clear_mask, - wait_cmd.set_mask, &wait_cmd.ibsta, wait_cmd.usec_timeout, desc); - if (retval < 0) - return retval; - - retval = copy_to_user((void __user *)arg, &wait_cmd, sizeof(wait_cmd)); - if (retval) - return -EFAULT; - - return 0; -} - -static int parallel_poll_ioctl(struct gpib_board *board, unsigned long arg) -{ - u8 poll_byte; - int retval; - - retval = ibrpp(board, &poll_byte); - if (retval < 0) - return retval; - - retval = copy_to_user((void __user *)arg, &poll_byte, sizeof(poll_byte)); - if (retval) - return -EFAULT; - - return 0; -} - -static int online_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_online_ioctl online_cmd; - int retval; - void __user *init_data = NULL; - - board->config.init_data = NULL; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - retval = copy_from_user(&online_cmd, (void __user *)arg, sizeof(online_cmd)); - if (retval) - return -EFAULT; - if (online_cmd.init_data_length > 0) { - board->config.init_data = vmalloc(online_cmd.init_data_length); - if (!board->config.init_data) - return -ENOMEM; - if (WARN_ON_ONCE(sizeof(init_data) > sizeof(online_cmd.init_data_ptr))) - return -EFAULT; - init_data = (void __user *)(unsigned long)(online_cmd.init_data_ptr); - retval = copy_from_user(board->config.init_data, init_data, - online_cmd.init_data_length); - if (retval) { - vfree(board->config.init_data); - return -EFAULT; - } - board->config.init_data_length = online_cmd.init_data_length; - } else { - board->config.init_data = NULL; - board->config.init_data_length = 0; - } - if (online_cmd.online) - retval = ibonline(board); - else - retval = iboffline(board); - if (board->config.init_data) { - vfree(board->config.init_data); - board->config.init_data = NULL; - board->config.init_data_length = 0; - } - return retval; -} - -static int remote_enable_ioctl(struct gpib_board *board, unsigned long arg) -{ - int enable; - int retval; - - retval = copy_from_user(&enable, (void __user *)arg, sizeof(enable)); - if (retval) - return -EFAULT; - - return ibsre(board, enable); -} - -static int take_control_ioctl(struct gpib_board *board, unsigned long arg) -{ - int synchronous; - int retval; - - retval = copy_from_user(&synchronous, (void __user *)arg, sizeof(synchronous)); - if (retval) - return -EFAULT; - - return ibcac(board, synchronous, 1); -} - -static int line_status_ioctl(struct gpib_board *board, unsigned long arg) -{ - short lines; - int retval; - - retval = iblines(board, &lines); - if (retval < 0) - return retval; - - retval = copy_to_user((void __user *)arg, &lines, sizeof(lines)); - if (retval) - return -EFAULT; - - return 0; -} - -static int pad_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg) -{ - struct gpib_pad_ioctl cmd; - int retval; - struct gpib_descriptor *desc; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - desc = handle_to_descriptor(file_priv, cmd.handle); - if (!desc) - return -EINVAL; - - if (desc->is_board) { - retval = ibpad(board, cmd.pad); - if (retval < 0) - return retval; - } else { - retval = decrement_open_device_count(board, &board->device_list, desc->pad, - desc->sad); - if (retval < 0) - return retval; - - desc->pad = cmd.pad; - - retval = increment_open_device_count(board, &board->device_list, desc->pad, - desc->sad); - if (retval < 0) - return retval; - } - - return 0; -} - -static int sad_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg) -{ - struct gpib_sad_ioctl cmd; - int retval; - struct gpib_descriptor *desc; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - desc = handle_to_descriptor(file_priv, cmd.handle); - if (!desc) - return -EINVAL; - - if (desc->is_board) { - retval = ibsad(board, cmd.sad); - if (retval < 0) - return retval; - } else { - retval = decrement_open_device_count(board, &board->device_list, desc->pad, - desc->sad); - if (retval < 0) - return retval; - - desc->sad = cmd.sad; - - retval = increment_open_device_count(board, &board->device_list, desc->pad, - desc->sad); - if (retval < 0) - return retval; - } - return 0; -} - -static int eos_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_eos_ioctl eos_cmd; - int retval; - - retval = copy_from_user(&eos_cmd, (void __user *)arg, sizeof(eos_cmd)); - if (retval) - return -EFAULT; - - return ibeos(board, eos_cmd.eos, eos_cmd.eos_flags); -} - -static int request_service_ioctl(struct gpib_board *board, unsigned long arg) -{ - u8 status_byte; - int retval; - - retval = copy_from_user(&status_byte, (void __user *)arg, sizeof(status_byte)); - if (retval) - return -EFAULT; - - return ibrsv2(board, status_byte, status_byte & request_service_bit); -} - -static int request_service2_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_request_service2 request_service2_cmd; - int retval; - - retval = copy_from_user(&request_service2_cmd, (void __user *)arg, - sizeof(struct gpib_request_service2)); - if (retval) - return -EFAULT; - - return ibrsv2(board, request_service2_cmd.status_byte, - request_service2_cmd.new_reason_for_service); -} - -static int iobase_ioctl(struct gpib_board_config *config, unsigned long arg) -{ - u64 base_addr; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - retval = copy_from_user(&base_addr, (void __user *)arg, sizeof(base_addr)); - if (retval) - return -EFAULT; - - if (WARN_ON_ONCE(sizeof(void *) > sizeof(base_addr))) - return -EFAULT; - config->ibbase = base_addr; - - return 0; -} - -static int irq_ioctl(struct gpib_board_config *config, unsigned long arg) -{ - unsigned int irq; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - retval = copy_from_user(&irq, (void __user *)arg, sizeof(irq)); - if (retval) - return -EFAULT; - - config->ibirq = irq; - - return 0; -} - -static int dma_ioctl(struct gpib_board_config *config, unsigned long arg) -{ - unsigned int dma_channel; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - retval = copy_from_user(&dma_channel, (void __user *)arg, sizeof(dma_channel)); - if (retval) - return -EFAULT; - - config->ibdma = dma_channel; - - return 0; -} - -static int autospoll_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg) -{ - short enable; - int retval; - struct gpib_descriptor *desc; - - retval = copy_from_user(&enable, (void __user *)arg, sizeof(enable)); - if (retval) - return -EFAULT; - - desc = handle_to_descriptor(file_priv, 0); /* board handle is 0 */ - - if (enable) { - if (!desc->autopoll_enabled) { - board->autospollers++; - desc->autopoll_enabled = 1; - } - retval = 0; - } else { - if (desc->autopoll_enabled) { - desc->autopoll_enabled = 0; - if (board->autospollers > 0) { - board->autospollers--; - retval = 0; - } else { - dev_err(board->gpib_dev, - "tried to set number of autospollers negative\n"); - retval = -EINVAL; - } - } else { - dev_err(board->gpib_dev, "autopoll disable requested before enable\n"); - retval = -EINVAL; - } - } - return retval; -} - -static int mutex_ioctl(struct gpib_board *board, struct gpib_file_private *file_priv, - unsigned long arg) -{ - int retval, lock_mutex; - - retval = copy_from_user(&lock_mutex, (void __user *)arg, sizeof(lock_mutex)); - if (retval) - return -EFAULT; - - if (lock_mutex) { - retval = mutex_lock_interruptible(&board->user_mutex); - if (retval) - return -ERESTARTSYS; - - spin_lock(&board->locking_pid_spinlock); - board->locking_pid = current->pid; - spin_unlock(&board->locking_pid_spinlock); - - atomic_set(&file_priv->holding_mutex, 1); - - dev_dbg(board->gpib_dev, "locked board mutex\n"); - } else { - spin_lock(&board->locking_pid_spinlock); - if (current->pid != board->locking_pid) { - dev_err(board->gpib_dev, "bug! pid %i tried to release mutex held by pid %i\n", - current->pid, board->locking_pid); - spin_unlock(&board->locking_pid_spinlock); - return -EPERM; - } - board->locking_pid = 0; - spin_unlock(&board->locking_pid_spinlock); - - atomic_set(&file_priv->holding_mutex, 0); - - mutex_unlock(&board->user_mutex); - dev_dbg(board->gpib_dev, "unlocked board mutex\n"); - } - return 0; -} - -static int timeout_ioctl(struct gpib_board *board, unsigned long arg) -{ - unsigned int timeout; - int retval; - - retval = copy_from_user(&timeout, (void __user *)arg, sizeof(timeout)); - if (retval) - return -EFAULT; - - board->usec_timeout = timeout; - dev_dbg(board->gpib_dev, "timeout set to %i usec\n", timeout); - - return 0; -} - -static int ppc_ioctl(struct gpib_board *board, unsigned long arg) -{ - struct gpib_ppoll_config_ioctl cmd; - int retval; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - if (cmd.set_ist) { - board->ist = 1; - board->interface->parallel_poll_response(board, board->ist); - } else if (cmd.clear_ist) { - board->ist = 0; - board->interface->parallel_poll_response(board, board->ist); - } - - if (cmd.config) { - retval = ibppc(board, cmd.config); - if (retval < 0) - return retval; - } - - return 0; -} - -static int set_local_ppoll_mode_ioctl(struct gpib_board *board, unsigned long arg) -{ - short cmd; - int retval; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - if (!board->interface->local_parallel_poll_mode) - return -ENOENT; - board->local_ppoll_mode = cmd != 0; - board->interface->local_parallel_poll_mode(board, board->local_ppoll_mode); - - return 0; -} - -static int get_local_ppoll_mode_ioctl(struct gpib_board *board, unsigned long arg) -{ - short cmd; - int retval; - - cmd = board->local_ppoll_mode; - retval = copy_to_user((void __user *)arg, &cmd, sizeof(cmd)); - if (retval) - return -EFAULT; - - return 0; -} - -static int query_board_rsv_ioctl(struct gpib_board *board, unsigned long arg) -{ - int status; - int retval; - - status = board->interface->serial_poll_status(board); - - retval = copy_to_user((void __user *)arg, &status, sizeof(status)); - if (retval) - return -EFAULT; - - return 0; -} - -static int board_info_ioctl(const struct gpib_board *board, unsigned long arg) -{ - struct gpib_board_info_ioctl info = { }; - int retval; - - info.pad = board->pad; - info.sad = board->sad; - info.parallel_poll_configuration = board->parallel_poll_configuration; - info.is_system_controller = board->master; - if (board->autospollers) - info.autopolling = 1; - else - info.autopolling = 0; - info.t1_delay = board->t1_nano_sec; - info.ist = board->ist; - info.no_7_bit_eos = board->interface->no_7_bit_eos; - retval = copy_to_user((void __user *)arg, &info, sizeof(info)); - if (retval) - return -EFAULT; - - return 0; -} - -static int interface_clear_ioctl(struct gpib_board *board, unsigned long arg) -{ - unsigned int usec_duration; - int retval; - - retval = copy_from_user(&usec_duration, (void __user *)arg, sizeof(usec_duration)); - if (retval) - return -EFAULT; - - return ibsic(board, usec_duration); -} - -static int select_pci_ioctl(struct gpib_board_config *config, unsigned long arg) -{ - struct gpib_select_pci_ioctl selection; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - retval = copy_from_user(&selection, (void __user *)arg, sizeof(selection)); - if (retval) - return -EFAULT; - - config->pci_bus = selection.pci_bus; - config->pci_slot = selection.pci_slot; - - return 0; -} - -static int select_device_path_ioctl(struct gpib_board_config *config, unsigned long arg) -{ - struct gpib_select_device_path_ioctl *selection; - int retval; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - selection = vmalloc(sizeof(struct gpib_select_device_path_ioctl)); - if (!selection) - return -ENOMEM; - - retval = copy_from_user(selection, (void __user *)arg, - sizeof(struct gpib_select_device_path_ioctl)); - if (retval) { - vfree(selection); - return -EFAULT; - } - - selection->device_path[sizeof(selection->device_path) - 1] = '\0'; - kfree(config->device_path); - config->device_path = NULL; - if (strlen(selection->device_path) > 0) - config->device_path = kstrdup(selection->device_path, GFP_KERNEL); - - vfree(selection); - return 0; -} - -unsigned int num_gpib_events(const struct gpib_event_queue *queue) -{ - return queue->num_events; -} - -static int push_gpib_event_nolock(struct gpib_board *board, short event_type) -{ - struct gpib_event_queue *queue = &board->event_queue; - struct list_head *head = &queue->event_head; - struct gpib_event *event; - static const unsigned int max_num_events = 1024; - int retval; - - if (num_gpib_events(queue) >= max_num_events) { - short lost_event; - - queue->dropped_event = 1; - retval = pop_gpib_event_nolock(board, queue, &lost_event); - if (retval < 0) - return retval; - } - - event = kmalloc(sizeof(struct gpib_event), GFP_ATOMIC); - if (!event) { - queue->dropped_event = 1; - dev_err(board->gpib_dev, "failed to allocate memory for event\n"); - return -ENOMEM; - } - - INIT_LIST_HEAD(&event->list); - event->event_type = event_type; - - list_add_tail(&event->list, head); - - queue->num_events++; - - dev_dbg(board->gpib_dev, "pushed event %i, %i in queue\n", - (int)event_type, num_gpib_events(queue)); - - return 0; -} - -// push event onto back of event queue -int push_gpib_event(struct gpib_board *board, short event_type) -{ - unsigned long flags; - int retval; - - spin_lock_irqsave(&board->event_queue.lock, flags); - retval = push_gpib_event_nolock(board, event_type); - spin_unlock_irqrestore(&board->event_queue.lock, flags); - - if (event_type == EVENT_DEV_TRG) - board->status |= DTAS; - if (event_type == EVENT_DEV_CLR) - board->status |= DCAS; - - return retval; -} -EXPORT_SYMBOL(push_gpib_event); - -static int pop_gpib_event_nolock(struct gpib_board *board, - struct gpib_event_queue *queue, short *event_type) -{ - struct list_head *head = &queue->event_head; - struct list_head *front = head->next; - struct gpib_event *event; - - if (num_gpib_events(queue) == 0) { - *event_type = EVENT_NONE; - return 0; - } - - if (front == head) - return -EIO; - - if (queue->dropped_event) { - queue->dropped_event = 0; - return -EPIPE; - } - - event = list_entry(front, struct gpib_event, list); - *event_type = event->event_type; - - list_del(front); - kfree(event); - - queue->num_events--; - - dev_dbg(board->gpib_dev, "popped event %i, %i in queue\n", - (int)*event_type, num_gpib_events(queue)); - - return 0; -} - -// pop event from front of event queue -int pop_gpib_event(struct gpib_board *board, struct gpib_event_queue *queue, short *event_type) -{ - unsigned long flags; - int retval; - - spin_lock_irqsave(&queue->lock, flags); - retval = pop_gpib_event_nolock(board, queue, event_type); - spin_unlock_irqrestore(&queue->lock, flags); - return retval; -} - -static int event_ioctl(struct gpib_board *board, unsigned long arg) -{ - short user_event; - int retval; - short event; - - retval = pop_gpib_event(board, &board->event_queue, &event); - if (retval < 0) - return retval; - - user_event = event; - - retval = copy_to_user((void __user *)arg, &user_event, sizeof(user_event)); - if (retval) - return -EFAULT; - - return 0; -} - -static int request_system_control_ioctl(struct gpib_board *board, unsigned long arg) -{ - int request_control; - int retval; - - retval = copy_from_user(&request_control, (void __user *)arg, sizeof(request_control)); - if (retval) - return -EFAULT; - - return ibrsc(board, request_control); -} - -static int t1_delay_ioctl(struct gpib_board *board, unsigned long arg) -{ - unsigned int cmd; - unsigned int delay; - int retval; - - if (!board->interface->t1_delay) - return -ENOENT; - - retval = copy_from_user(&cmd, (void __user *)arg, sizeof(cmd)); - if (retval) - return -EFAULT; - - delay = cmd; - - retval = board->interface->t1_delay(board, delay); - if (retval < 0) - return retval; - - board->t1_nano_sec = retval; - return 0; -} - -static const struct file_operations ib_fops = { - .owner = THIS_MODULE, - .llseek = NULL, - .unlocked_ioctl = &ibioctl, - .compat_ioctl = &ibioctl, - .open = &ibopen, - .release = &ibclose, -}; - -struct gpib_board board_array[GPIB_MAX_NUM_BOARDS]; - -LIST_HEAD(registered_drivers); - -void init_gpib_descriptor(struct gpib_descriptor *desc) -{ - desc->pad = 0; - desc->sad = -1; - desc->is_board = 0; - desc->autopoll_enabled = 0; - atomic_set(&desc->io_in_progress, 0); -} - -int gpib_register_driver(struct gpib_interface *interface, struct module *provider_module) -{ - struct gpib_interface_list *entry; - - entry = kmalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - return -ENOMEM; - - entry->interface = interface; - entry->module = provider_module; - list_add(&entry->list, ®istered_drivers); - - return 0; -} -EXPORT_SYMBOL(gpib_register_driver); - -void gpib_unregister_driver(struct gpib_interface *interface) -{ - int i; - struct list_head *list_ptr; - - for (i = 0; i < GPIB_MAX_NUM_BOARDS; i++) { - struct gpib_board *board = &board_array[i]; - - if (board->interface == interface) { - if (board->use_count > 0) - pr_warn("gpib: Warning: deregistered interface %s in use\n", - interface->name); - iboffline(board); - board->interface = NULL; - } - } - for (list_ptr = registered_drivers.next; list_ptr != ®istered_drivers;) { - struct gpib_interface_list *entry; - - entry = list_entry(list_ptr, struct gpib_interface_list, list); - list_ptr = list_ptr->next; - if (entry->interface == interface) { - list_del(&entry->list); - kfree(entry); - } - } -} -EXPORT_SYMBOL(gpib_unregister_driver); - -static void init_gpib_board_config(struct gpib_board_config *config) -{ - memset(config, 0, sizeof(struct gpib_board_config)); - config->pci_bus = -1; - config->pci_slot = -1; -} - -void init_gpib_board(struct gpib_board *board) -{ - board->interface = NULL; - board->provider_module = NULL; - board->buffer = NULL; - board->buffer_length = 0; - board->status = 0; - init_waitqueue_head(&board->wait); - mutex_init(&board->user_mutex); - mutex_init(&board->big_gpib_mutex); - board->locking_pid = 0; - spin_lock_init(&board->locking_pid_spinlock); - spin_lock_init(&board->spinlock); - timer_setup(&board->timer, NULL, 0); - board->dev = NULL; - board->gpib_dev = NULL; - init_gpib_board_config(&board->config); - board->private_data = NULL; - board->use_count = 0; - INIT_LIST_HEAD(&board->device_list); - board->pad = 0; - board->sad = -1; - board->usec_timeout = 3000000; - board->parallel_poll_configuration = 0; - board->online = 0; - board->autospollers = 0; - board->autospoll_task = NULL; - init_event_queue(&board->event_queue); - board->minor = -1; - init_gpib_pseudo_irq(&board->pseudo_irq); - board->master = 1; - atomic_set(&board->stuck_srq, 0); - board->local_ppoll_mode = 0; -} - -int gpib_allocate_board(struct gpib_board *board) -{ - if (!board->buffer) { - board->buffer_length = 0x4000; - board->buffer = vmalloc(board->buffer_length); - if (!board->buffer) { - board->buffer_length = 0; - return -ENOMEM; - } - } - return 0; -} - -void gpib_deallocate_board(struct gpib_board *board) -{ - short dummy; - - if (board->buffer) { - vfree(board->buffer); - board->buffer = NULL; - board->buffer_length = 0; - } - while (num_gpib_events(&board->event_queue)) - pop_gpib_event(board, &board->event_queue, &dummy); -} - -static void init_board_array(struct gpib_board *board_array, unsigned int length) -{ - int i; - - for (i = 0; i < length; i++) { - init_gpib_board(&board_array[i]); - board_array[i].minor = i; - } -} - -void init_gpib_status_queue(struct gpib_status_queue *device) -{ - INIT_LIST_HEAD(&device->list); - INIT_LIST_HEAD(&device->status_bytes); - device->num_status_bytes = 0; - device->reference_count = 0; - device->dropped_byte = 0; -} - -static struct class *gpib_class; - -static int __init gpib_common_init_module(void) -{ - int i; - - pr_info("GPIB core driver\n"); - init_board_array(board_array, GPIB_MAX_NUM_BOARDS); - if (register_chrdev(GPIB_CODE, "gpib", &ib_fops)) { - pr_err("gpib: can't get major %d\n", GPIB_CODE); - return -EIO; - } - gpib_class = class_create("gpib_common"); - if (IS_ERR(gpib_class)) { - pr_err("gpib: failed to create gpib class\n"); - unregister_chrdev(GPIB_CODE, "gpib"); - return PTR_ERR(gpib_class); - } - for (i = 0; i < GPIB_MAX_NUM_BOARDS; ++i) - board_array[i].gpib_dev = device_create(gpib_class, NULL, - MKDEV(GPIB_CODE, i), NULL, "gpib%i", i); - - return 0; -} - -static void __exit gpib_common_exit_module(void) -{ - int i; - - for (i = 0; i < GPIB_MAX_NUM_BOARDS; ++i) - device_destroy(gpib_class, MKDEV(GPIB_CODE, i)); - - class_destroy(gpib_class); - unregister_chrdev(GPIB_CODE, "gpib"); -} - -int gpib_match_device_path(struct device *dev, const char *device_path_in) -{ - if (device_path_in) { - char *device_path; - - device_path = kobject_get_path(&dev->kobj, GFP_KERNEL); - if (!device_path) { - dev_err(dev, "kobject_get_path returned NULL."); - return 0; - } - if (strcmp(device_path_in, device_path) != 0) { - kfree(device_path); - return 0; - } - kfree(device_path); - } - return 1; -} -EXPORT_SYMBOL(gpib_match_device_path); - -struct pci_dev *gpib_pci_get_device(const struct gpib_board_config *config, unsigned int vendor_id, - unsigned int device_id, struct pci_dev *from) -{ - struct pci_dev *pci_device = from; - - while ((pci_device = pci_get_device(vendor_id, device_id, pci_device))) { - if (config->pci_bus >= 0 && config->pci_bus != pci_device->bus->number) - continue; - if (config->pci_slot >= 0 && config->pci_slot != - PCI_SLOT(pci_device->devfn)) - continue; - if (gpib_match_device_path(&pci_device->dev, config->device_path) == 0) - continue; - return pci_device; - } - return NULL; -} -EXPORT_SYMBOL(gpib_pci_get_device); - -struct pci_dev *gpib_pci_get_subsys(const struct gpib_board_config *config, unsigned int vendor_id, - unsigned int device_id, unsigned int ss_vendor, - unsigned int ss_device, - struct pci_dev *from) -{ - struct pci_dev *pci_device = from; - - while ((pci_device = pci_get_subsys(vendor_id, device_id, - ss_vendor, ss_device, pci_device))) { - if (config->pci_bus >= 0 && config->pci_bus != pci_device->bus->number) - continue; - if (config->pci_slot >= 0 && config->pci_slot != - PCI_SLOT(pci_device->devfn)) - continue; - if (gpib_match_device_path(&pci_device->dev, config->device_path) == 0) - continue; - return pci_device; - } - return NULL; -} -EXPORT_SYMBOL(gpib_pci_get_subsys); - -module_init(gpib_common_init_module); -module_exit(gpib_common_exit_module); - diff --git a/drivers/staging/gpib/common/iblib.c b/drivers/staging/gpib/common/iblib.c deleted file mode 100644 index 7cbb6a467177..000000000000 --- a/drivers/staging/gpib/common/iblib.c +++ /dev/null @@ -1,717 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define dev_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include "ibsys.h" -#include <linux/delay.h> -#include <linux/kthread.h> -#include <linux/vmalloc.h> - -/* - * IBCAC - * Return to the controller active state from the - * controller standby state, i.e., turn ATN on. Note - * that in order to enter the controller active state - * from the controller idle state, ibsic must be called. - * If sync is non-zero, attempt to take control synchronously. - * If fallback_to_async is non-zero, try to take control asynchronously - * if synchronous attempt fails. - */ -int ibcac(struct gpib_board *board, int sync, int fallback_to_async) -{ - int status = ibstatus(board); - int retval; - - if ((status & CIC) == 0) - return -EINVAL; - - if (status & ATN) - return 0; - - if (sync && (status & LACS) == 0) - /* - * tcs (take control synchronously) can only possibly work when - * controller is listener. Error code also needs to be -ETIMEDOUT - * or it will giveout without doing fallback. - */ - retval = -ETIMEDOUT; - else - retval = board->interface->take_control(board, sync); - - if (retval < 0 && fallback_to_async) { - if (sync && retval == -ETIMEDOUT) - retval = board->interface->take_control(board, 0); - } - board->interface->update_status(board, 0); - - return retval; -} - -/* - * After ATN is asserted, it should cause any connected devices - * to start listening for command bytes and leave acceptor idle state. - * So if ATN is asserted and neither NDAC or NRFD are asserted, - * then there are no devices and ibcmd should error out immediately. - * Some gpib hardware sees itself asserting NDAC/NRFD when it - * is controller in charge, in which case this check will - * do nothing useful (but shouldn't cause any harm either). - * Drivers that don't need this check (ni_usb for example) may - * set the skip_check_for_command_acceptors flag in their - * gpib_interface_struct to avoid useless overhead. - */ -static int check_for_command_acceptors(struct gpib_board *board) -{ - int lines; - - if (board->interface->skip_check_for_command_acceptors) - return 0; - if (!board->interface->line_status) - return 0; - - udelay(2); // allow time for devices to respond to ATN if it was just asserted - - lines = board->interface->line_status(board); - if (lines < 0) - return lines; - - if ((lines & VALID_NRFD) && (lines & VALID_NDAC)) { - if ((lines & BUS_NRFD) == 0 && (lines & BUS_NDAC) == 0) - return -ENOTCONN; - } - - return 0; -} - -/* - * IBCMD - * Write cnt command bytes from buf to the GPIB. The - * command operation terminates only on I/O complete. - * - * NOTE: - * 1. Prior to beginning the command, the interface is - * placed in the controller active state. - * 2. Before calling ibcmd for the first time, ibsic - * must be called to initialize the GPIB and enable - * the interface to leave the controller idle state. - */ -int ibcmd(struct gpib_board *board, u8 *buf, size_t length, size_t *bytes_written) -{ - ssize_t ret = 0; - int status; - - *bytes_written = 0; - - status = ibstatus(board); - - if ((status & CIC) == 0) - return -EINVAL; - - os_start_timer(board, board->usec_timeout); - - ret = ibcac(board, 1, 1); - if (ret == 0) { - ret = check_for_command_acceptors(board); - if (ret == 0) - ret = board->interface->command(board, buf, length, bytes_written); - } - - os_remove_timer(board); - - if (io_timed_out(board)) - ret = -ETIMEDOUT; - - return ret; -} - -/* - * IBGTS - * Go to the controller standby state from the controller - * active state, i.e., turn ATN off. - */ - -int ibgts(struct gpib_board *board) -{ - int status = ibstatus(board); - int retval; - - if ((status & CIC) == 0) - return -EINVAL; - - retval = board->interface->go_to_standby(board); /* go to standby */ - - board->interface->update_status(board, 0); - - return retval; -} - -static int autospoll_wait_should_wake_up(struct gpib_board *board) -{ - int retval; - - mutex_lock(&board->big_gpib_mutex); - - retval = board->master && board->autospollers > 0 && - !atomic_read(&board->stuck_srq) && - test_and_clear_bit(SRQI_NUM, &board->status); - - mutex_unlock(&board->big_gpib_mutex); - return retval; -} - -static int autospoll_thread(void *board_void) -{ - struct gpib_board *board = board_void; - int retval = 0; - - dev_dbg(board->gpib_dev, "entering autospoll thread\n"); - - while (1) { - wait_event_interruptible(board->wait, - kthread_should_stop() || - autospoll_wait_should_wake_up(board)); - dev_dbg(board->gpib_dev, "autospoll wait satisfied\n"); - if (kthread_should_stop()) - break; - - mutex_lock(&board->big_gpib_mutex); - /* make sure we are still good after we have lock */ - if (board->autospollers <= 0 || board->master == 0) { - mutex_unlock(&board->big_gpib_mutex); - continue; - } - mutex_unlock(&board->big_gpib_mutex); - - if (try_module_get(board->provider_module)) { - retval = autopoll_all_devices(board); - module_put(board->provider_module); - } else { - dev_err(board->gpib_dev, "try_module_get() failed!\n"); - } - if (retval <= 0) { - dev_err(board->gpib_dev, "stuck SRQ\n"); - - atomic_set(&board->stuck_srq, 1); // XXX could be better - set_bit(SRQI_NUM, &board->status); - } - } - return retval; -} - -int ibonline(struct gpib_board *board) -{ - int retval; - - if (board->online) - return -EBUSY; - if (!board->interface) - return -ENODEV; - retval = gpib_allocate_board(board); - if (retval < 0) - return retval; - - board->dev = NULL; - board->local_ppoll_mode = 0; - retval = board->interface->attach(board, &board->config); - if (retval < 0) { - board->interface->detach(board); - return retval; - } - /* - * nios2nommu on 2.6.11 uclinux kernel has weird problems - * with autospoll thread causing huge slowdowns - */ -#ifndef CONFIG_NIOS2 - board->autospoll_task = kthread_run(&autospoll_thread, board, - "gpib%d_autospoll_kthread", board->minor); - retval = IS_ERR(board->autospoll_task); - if (retval) { - dev_err(board->gpib_dev, "failed to create autospoll thread\n"); - board->interface->detach(board); - return retval; - } -#endif - board->online = 1; - dev_dbg(board->gpib_dev, "board online\n"); - - return 0; -} - -/* XXX need to make sure board is generally not in use (grab board lock?) */ -int iboffline(struct gpib_board *board) -{ - int retval; - - if (board->online == 0) - return 0; - if (!board->interface) - return -ENODEV; - - if (board->autospoll_task && !IS_ERR(board->autospoll_task)) { - retval = kthread_stop(board->autospoll_task); - if (retval) - dev_err(board->gpib_dev, "kthread_stop returned %i\n", retval); - board->autospoll_task = NULL; - } - - board->interface->detach(board); - gpib_deallocate_board(board); - board->online = 0; - dev_dbg(board->gpib_dev, "board offline\n"); - - return 0; -} - -/* - * IBLINES - * Poll the GPIB control lines and return their status in buf. - * - * LSB (bits 0-7) - VALID lines mask (lines that can be monitored). - * Next LSB (bits 8-15) - STATUS lines mask (lines that are currently set). - * - */ -int iblines(const struct gpib_board *board, short *lines) -{ - int retval; - - *lines = 0; - if (!board->interface->line_status) - return 0; - retval = board->interface->line_status(board); - if (retval < 0) - return retval; - *lines = retval; - return 0; -} - -/* - * IBRD - * Read up to 'length' bytes of data from the GPIB into buf. End - * on detection of END (EOI and or EOS) and set 'end_flag'. - * - * NOTE: - * 1. The interface is placed in the controller standby - * state prior to beginning the read. - * 2. Prior to calling ibrd, the intended devices as well - * as the interface board itself must be addressed by - * calling ibcmd. - */ - -int ibrd(struct gpib_board *board, u8 *buf, size_t length, int *end_flag, size_t *nbytes) -{ - ssize_t ret = 0; - int retval; - size_t bytes_read; - - *nbytes = 0; - *end_flag = 0; - if (length == 0) - return 0; - - if (board->master) { - retval = ibgts(board); - if (retval < 0) - return retval; - } - /* - * XXX resetting timer here could cause timeouts take longer than they should, - * since read_ioctl calls this - * function in a loop, there is probably a similar problem with writes/commands - */ - os_start_timer(board, board->usec_timeout); - - do { - ret = board->interface->read(board, buf, length - *nbytes, end_flag, &bytes_read); - if (ret < 0) - goto ibrd_out; - - buf += bytes_read; - *nbytes += bytes_read; - if (need_resched()) - schedule(); - } while (ret == 0 && *nbytes > 0 && *nbytes < length && *end_flag == 0); -ibrd_out: - os_remove_timer(board); - - return ret; -} - -/* - * IBRPP - * Conduct a parallel poll and return the byte in buf. - * - * NOTE: - * 1. Prior to conducting the poll the interface is placed - * in the controller active state. - */ -int ibrpp(struct gpib_board *board, u8 *result) -{ - int retval = 0; - - os_start_timer(board, board->usec_timeout); - retval = ibcac(board, 1, 1); - if (retval) - return -1; - - retval = board->interface->parallel_poll(board, result); - - os_remove_timer(board); - return retval; -} - -int ibppc(struct gpib_board *board, u8 configuration) -{ - configuration &= 0x1f; - board->interface->parallel_poll_configure(board, configuration); - board->parallel_poll_configuration = configuration; - - return 0; -} - -int ibrsv2(struct gpib_board *board, u8 status_byte, int new_reason_for_service) -{ - int board_status = ibstatus(board); - const unsigned int MSS = status_byte & request_service_bit; - - if ((board_status & CIC)) - return -EINVAL; - - if (MSS == 0 && new_reason_for_service) - return -EINVAL; - - if (board->interface->serial_poll_response2) { - board->interface->serial_poll_response2(board, status_byte, new_reason_for_service); - // fall back on simpler serial_poll_response if the behavior would be the same - } else if (board->interface->serial_poll_response && - (MSS == 0 || (MSS && new_reason_for_service))) { - board->interface->serial_poll_response(board, status_byte); - } else { - return -EOPNOTSUPP; - } - - return 0; -} - -/* - * IBSIC - * Send IFC for at least 100 microseconds. - * - * NOTE: - * 1. Ibsic must be called prior to the first call to - * ibcmd in order to initialize the bus and enable the - * interface to leave the controller idle state. - */ -int ibsic(struct gpib_board *board, unsigned int usec_duration) -{ - if (board->master == 0) - return -EINVAL; - - if (usec_duration < 100) - usec_duration = 100; - if (usec_duration > 1000) - usec_duration = 1000; - - dev_dbg(board->gpib_dev, "sending interface clear, delay = %ius\n", usec_duration); - board->interface->interface_clear(board, 1); - udelay(usec_duration); - board->interface->interface_clear(board, 0); - - return 0; -} - -int ibrsc(struct gpib_board *board, int request_control) -{ - int retval; - - if (!board->interface->request_system_control) - return -EPERM; - - retval = board->interface->request_system_control(board, request_control); - - if (retval) - return retval; - - board->master = request_control != 0; - - return 0; -} - -/* - * IBSRE - * Send REN true if v is non-zero or false if v is zero. - */ -int ibsre(struct gpib_board *board, int enable) -{ - if (board->master == 0) - return -EINVAL; - - board->interface->remote_enable(board, enable); /* set or clear REN */ - if (!enable) - usleep_range(100, 150); - - return 0; -} - -/* - * IBPAD - * change the GPIB address of the interface board. The address - * must be 0 through 30. ibonl resets the address to PAD. - */ -int ibpad(struct gpib_board *board, unsigned int addr) -{ - if (addr > MAX_GPIB_PRIMARY_ADDRESS) - return -EINVAL; - - board->pad = addr; - if (board->online) - board->interface->primary_address(board, board->pad); - dev_dbg(board->gpib_dev, "set primary addr to %i\n", board->pad); - return 0; -} - -/* - * IBSAD - * change the secondary GPIB address of the interface board. - * The address must be 0 through 30, or negative disables. ibonl resets the - * address to SAD. - */ -int ibsad(struct gpib_board *board, int addr) -{ - if (addr > MAX_GPIB_SECONDARY_ADDRESS) - return -EINVAL; - board->sad = addr; - if (board->online) { - if (board->sad >= 0) - board->interface->secondary_address(board, board->sad, 1); - else - board->interface->secondary_address(board, 0, 0); - } - dev_dbg(board->gpib_dev, "set secondary addr to %i\n", board->sad); - - return 0; -} - -/* - * IBEOS - * Set the end-of-string modes for I/O operations to v. - * - */ -int ibeos(struct gpib_board *board, int eos, int eosflags) -{ - int retval; - - if (eosflags & ~EOS_MASK) - return -EINVAL; - if (eosflags & REOS) { - retval = board->interface->enable_eos(board, eos, eosflags & BIN); - } else { - board->interface->disable_eos(board); - retval = 0; - } - return retval; -} - -int ibstatus(struct gpib_board *board) -{ - return general_ibstatus(board, NULL, 0, 0, NULL); -} - -int general_ibstatus(struct gpib_board *board, const struct gpib_status_queue *device, - int clear_mask, int set_mask, struct gpib_descriptor *desc) -{ - int status = 0; - short line_status; - - if (board->private_data) { - status = board->interface->update_status(board, clear_mask); - /* - * XXX should probably stop having drivers use TIMO bit in - * board->status to avoid confusion - */ - status &= ~TIMO; - /* get real SRQI status if we can */ - if (iblines(board, &line_status) == 0) { - if ((line_status & VALID_SRQ)) { - if ((line_status & BUS_SRQ)) - status |= SRQI; - else - status &= ~SRQI; - } - } - } - if (device) - if (num_status_bytes(device)) - status |= RQS; - - if (desc) { - if (set_mask & CMPL) - atomic_set(&desc->io_in_progress, 0); - else if (clear_mask & CMPL) - atomic_set(&desc->io_in_progress, 1); - - if (atomic_read(&desc->io_in_progress)) - status &= ~CMPL; - else - status |= CMPL; - } - if (num_gpib_events(&board->event_queue)) - status |= EVENT; - else - status &= ~EVENT; - - return status; -} - -struct wait_info { - struct gpib_board *board; - struct timer_list timer; - int timed_out; - unsigned long usec_timeout; -}; - -static void wait_timeout(struct timer_list *t) -{ - struct wait_info *winfo = timer_container_of(winfo, t, timer); - - winfo->timed_out = 1; - wake_up_interruptible(&winfo->board->wait); -} - -static void init_wait_info(struct wait_info *winfo) -{ - winfo->board = NULL; - winfo->timed_out = 0; - timer_setup_on_stack(&winfo->timer, wait_timeout, 0); -} - -static int wait_satisfied(struct wait_info *winfo, struct gpib_status_queue *status_queue, - int wait_mask, int *status, struct gpib_descriptor *desc) -{ - struct gpib_board *board = winfo->board; - int temp_status; - - if (mutex_lock_interruptible(&board->big_gpib_mutex)) - return -ERESTARTSYS; - - temp_status = general_ibstatus(board, status_queue, 0, 0, desc); - - mutex_unlock(&board->big_gpib_mutex); - - if (winfo->timed_out) - temp_status |= TIMO; - else - temp_status &= ~TIMO; - if (wait_mask & temp_status) { - *status = temp_status; - return 1; - } -// XXX does wait for END work? - return 0; -} - -/* install timer interrupt handler */ -static void start_wait_timer(struct wait_info *winfo) -/* Starts the timeout task */ -{ - winfo->timed_out = 0; - - if (winfo->usec_timeout > 0) - mod_timer(&winfo->timer, jiffies + usec_to_jiffies(winfo->usec_timeout)); -} - -static void remove_wait_timer(struct wait_info *winfo) -{ - timer_delete_sync(&winfo->timer); - timer_destroy_on_stack(&winfo->timer); -} - -/* - * IBWAIT - * Check or wait for a GPIB event to occur. The mask argument - * is a bit vector corresponding to the status bit vector. It - * has a bit set for each condition which can terminate the wait - * If the mask is 0 then - * no condition is waited for. - */ -int ibwait(struct gpib_board *board, int wait_mask, int clear_mask, int set_mask, - int *status, unsigned long usec_timeout, struct gpib_descriptor *desc) -{ - int retval = 0; - struct gpib_status_queue *status_queue; - struct wait_info winfo; - - if (desc->is_board) - status_queue = NULL; - else - status_queue = get_gpib_status_queue(board, desc->pad, desc->sad); - - if (wait_mask == 0) { - *status = general_ibstatus(board, status_queue, clear_mask, set_mask, desc); - return 0; - } - - mutex_unlock(&board->big_gpib_mutex); - - init_wait_info(&winfo); - winfo.board = board; - winfo.usec_timeout = usec_timeout; - start_wait_timer(&winfo); - - if (wait_event_interruptible(board->wait, wait_satisfied(&winfo, status_queue, - wait_mask, status, desc))) { - dev_dbg(board->gpib_dev, "wait interrupted\n"); - retval = -ERESTARTSYS; - } - remove_wait_timer(&winfo); - - if (retval) - return retval; - if (mutex_lock_interruptible(&board->big_gpib_mutex)) - return -ERESTARTSYS; - - /* make sure we only clear status bits that we are reporting */ - if (*status & clear_mask || set_mask) - general_ibstatus(board, status_queue, *status & clear_mask, set_mask, NULL); - - return 0; -} - -/* - * IBWRT - * Write cnt bytes of data from buf to the GPIB. The write - * operation terminates only on I/O complete. - * - * NOTE: - * 1. Prior to beginning the write, the interface is - * placed in the controller standby state. - * 2. Prior to calling ibwrt, the intended devices as - * well as the interface board itself must be - * addressed by calling ibcmd. - */ -int ibwrt(struct gpib_board *board, u8 *buf, size_t cnt, int send_eoi, size_t *bytes_written) -{ - int ret = 0; - int retval; - - if (cnt == 0) - return 0; - - if (board->master) { - retval = ibgts(board); - if (retval < 0) - return retval; - } - os_start_timer(board, board->usec_timeout); - ret = board->interface->write(board, buf, cnt, send_eoi, bytes_written); - - if (io_timed_out(board)) - ret = -ETIMEDOUT; - - os_remove_timer(board); - - return ret; -} - diff --git a/drivers/staging/gpib/common/ibsys.h b/drivers/staging/gpib/common/ibsys.h deleted file mode 100644 index e5a148f513a8..000000000000 --- a/drivers/staging/gpib/common/ibsys.h +++ /dev/null @@ -1,34 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#include "gpibP.h" - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/major.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/timer.h> - -#include <linux/io.h> -#include <linux/uaccess.h> -#include <asm/irq.h> -#include <asm/dma.h> - -#define MAX_GPIB_PRIMARY_ADDRESS 30 -#define MAX_GPIB_SECONDARY_ADDRESS 31 - -int gpib_allocate_board(struct gpib_board *board); -void gpib_deallocate_board(struct gpib_board *board); - -unsigned int num_status_bytes(const struct gpib_status_queue *dev); -int push_status_byte(struct gpib_board *board, struct gpib_status_queue *device, - u8 poll_byte); -int pop_status_byte(struct gpib_board *board, struct gpib_status_queue *device, - u8 *poll_byte); -struct gpib_status_queue *get_gpib_status_queue(struct gpib_board *board, - unsigned int pad, int sad); -int get_serial_poll_byte(struct gpib_board *board, unsigned int pad, int sad, - unsigned int usec_timeout, u8 *poll_byte); -int autopoll_all_devices(struct gpib_board *board); diff --git a/drivers/staging/gpib/eastwood/Makefile b/drivers/staging/gpib/eastwood/Makefile deleted file mode 100644 index 384825195f77..000000000000 --- a/drivers/staging/gpib/eastwood/Makefile +++ /dev/null @@ -1,3 +0,0 @@ - -obj-$(CONFIG_GPIB_FLUKE) += fluke_gpib.o - diff --git a/drivers/staging/gpib/eastwood/fluke_gpib.c b/drivers/staging/gpib/eastwood/fluke_gpib.c deleted file mode 100644 index 3ae848e3f738..000000000000 --- a/drivers/staging/gpib/eastwood/fluke_gpib.c +++ /dev/null @@ -1,1180 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * GPIB Driver for Fluke cda devices. Basically, its a driver for a (bugfixed) - * cb7210 connected to channel 0 of a pl330 dma controller. - * Author: Frank Mori Hess <fmh6jj@gmail.com> - * copyright: (C) 2006, 2010, 2015 Fluke Corporation - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "fluke_gpib.h" - -#include "gpibP.h" -#include <linux/dma-mapping.h> -#include <linux/ioport.h> -#include <linux/module.h> -#include <linux/mod_devicetable.h> -#include <linux/platform_device.h> -#include <linux/slab.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB Driver for Fluke cda devices"); - -static int fluke_attach_holdoff_all(struct gpib_board *board, - const struct gpib_board_config *config); -static int fluke_attach_holdoff_end(struct gpib_board *board, - const struct gpib_board_config *config); -static void fluke_detach(struct gpib_board *board); -static int fluke_config_dma(struct gpib_board *board, int output); -static irqreturn_t fluke_gpib_internal_interrupt(struct gpib_board *board); - -static struct platform_device *fluke_gpib_pdev; - -static u8 fluke_locking_read_byte(struct nec7210_priv *nec_priv, unsigned int register_number) -{ - u8 retval; - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - retval = fluke_read_byte_nolock(nec_priv, register_number); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); - return retval; -} - -static void fluke_locking_write_byte(struct nec7210_priv *nec_priv, u8 byte, - unsigned int register_number) -{ - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - fluke_write_byte_nolock(nec_priv, byte, register_number); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); -} - -// wrappers for interface functions -static int fluke_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); -} - -static int fluke_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int fluke_command(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int fluke_take_control(struct gpib_board *board, int synchronous) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int fluke_go_to_standby(struct gpib_board *board) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int fluke_request_system_control(struct gpib_board *board, int request_control) -{ - struct fluke_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - return nec7210_request_system_control(board, nec_priv, request_control); -} - -static void fluke_interface_clear(struct gpib_board *board, int assert) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void fluke_remote_enable(struct gpib_board *board, int enable) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int fluke_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void fluke_disable_eos(struct gpib_board *board) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int fluke_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int fluke_primary_address(struct gpib_board *board, unsigned int address) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int fluke_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int fluke_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void fluke_parallel_poll_configure(struct gpib_board *board, u8 configuration) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, configuration); -} - -static void fluke_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void fluke_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct fluke_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static u8 fluke_serial_poll_status(struct gpib_board *board) -{ - struct fluke_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static void fluke_return_to_local(struct gpib_board *board) -{ - struct fluke_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - write_byte(nec_priv, AUX_RTL2, AUXMR); - udelay(1); - write_byte(nec_priv, AUX_RTL, AUXMR); -} - -static int fluke_line_status(const struct gpib_board *board) -{ - int status = VALID_ALL; - int bsr_bits; - struct fluke_priv *e_priv; - - e_priv = board->private_data; - - bsr_bits = fluke_paged_read_byte(e_priv, BUS_STATUS, BUS_STATUS_PAGE); - - if ((bsr_bits & BSR_REN_BIT) == 0) - status |= BUS_REN; - if ((bsr_bits & BSR_IFC_BIT) == 0) - status |= BUS_IFC; - if ((bsr_bits & BSR_SRQ_BIT) == 0) - status |= BUS_SRQ; - if ((bsr_bits & BSR_EOI_BIT) == 0) - status |= BUS_EOI; - if ((bsr_bits & BSR_NRFD_BIT) == 0) - status |= BUS_NRFD; - if ((bsr_bits & BSR_NDAC_BIT) == 0) - status |= BUS_NDAC; - if ((bsr_bits & BSR_DAV_BIT) == 0) - status |= BUS_DAV; - if ((bsr_bits & BSR_ATN_BIT) == 0) - status |= BUS_ATN; - - return status; -} - -static int fluke_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned int retval; - - retval = nec7210_t1_delay(board, nec_priv, nano_sec); - - if (nano_sec <= 350) { - write_byte(nec_priv, AUX_HI_SPEED, AUXMR); - retval = 350; - } else { - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - } - return retval; -} - -static int lacs_or_read_ready(struct gpib_board *board) -{ - const struct fluke_priv *e_priv = board->private_data; - const struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - int retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = test_bit(LACS_NUM, &board->status) || test_bit(READ_READY_BN, &nec_priv->state); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -/* - * Wait until it is possible for a read to do something useful. This - * is not essential, it only exists to prevent RFD holdoff from being released pointlessly. - */ -static int wait_for_read(struct gpib_board *board) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - lacs_or_read_ready(board) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - return retval; -} - -/* - * Check if the SH state machine is in SGNS. We check twice since there is a very small chance - * we could be blowing through SGNS from SIDS to SDYS if there is already a - * byte available in the handshake state machine. We are interested - * in the case where the handshake is stuck in SGNS due to no byte being - * available to the chip (and thus we can be confident a dma transfer will - * result in at least one byte making it into the chip). This matters - * because we want to be confident before sending a "send eoi" auxilary - * command that we will be able to also put the associated data byte - * in the chip before any potential timeout. - */ -static int source_handshake_is_sgns(struct fluke_priv *e_priv) -{ - int i; - - for (i = 0; i < 2; ++i) { - if ((fluke_paged_read_byte(e_priv, STATE1_REG, STATE1_PAGE) & - SOURCE_HANDSHAKE_MASK) != SOURCE_HANDSHAKE_SGNS_BITS) { - return 0; - } - } - return 1; -} - -static int source_handshake_is_sids_or_sgns(struct fluke_priv *e_priv) -{ - unsigned int source_handshake_bits; - - source_handshake_bits = fluke_paged_read_byte(e_priv, STATE1_REG, STATE1_PAGE) & - SOURCE_HANDSHAKE_MASK; - - return (source_handshake_bits == SOURCE_HANDSHAKE_SGNS_BITS) || - (source_handshake_bits == SOURCE_HANDSHAKE_SIDS_BITS); -} - -/* - * Wait until the gpib chip is ready to accept a data out byte. - * If the chip is SGNS it is probably waiting for a a byte to - * be written to it. - */ -static int wait_for_data_out_ready(struct gpib_board *board) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - (test_bit(TACS_NUM, &board->status) && - source_handshake_is_sgns(e_priv)) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - return retval; -} - -static int wait_for_sids_or_sgns(struct gpib_board *board) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - source_handshake_is_sids_or_sgns(e_priv) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - return retval; -} - -static void fluke_dma_callback(void *arg) -{ - struct gpib_board *board = arg; - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE | HR_DIIE, HR_DOIE | HR_DIIE); - wake_up_interruptible(&board->wait); - - fluke_gpib_internal_interrupt(board); - clear_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state); - clear_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static int fluke_dma_write(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - int retval = 0; - dma_addr_t address; - struct dma_async_tx_descriptor *tx_desc; - - *bytes_written = 0; - - if (WARN_ON_ONCE(length > e_priv->dma_buffer_size)) - return -EFAULT; - dmaengine_terminate_all(e_priv->dma_channel); - // write-clear counter - writel(0x0, e_priv->write_transfer_counter); - - memcpy(e_priv->dma_buffer, buffer, length); - address = dma_map_single(board->dev, e_priv->dma_buffer, - length, DMA_TO_DEVICE); - /* program dma controller */ - retval = fluke_config_dma(board, 1); - if (retval) - goto cleanup; - - tx_desc = dmaengine_prep_slave_single(e_priv->dma_channel, address, length, DMA_MEM_TO_DEV, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!tx_desc) { - dev_err(board->gpib_dev, "failed to allocate dma transmit descriptor\n"); - retval = -ENOMEM; - goto cleanup; - } - tx_desc->callback = fluke_dma_callback; - tx_desc->callback_param = board; - - spin_lock_irqsave(&board->spinlock, flags); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO); - dmaengine_submit(tx_desc); - dma_async_issue_pending(e_priv->dma_channel); - - clear_bit(WRITE_READY_BN, &nec_priv->state); - set_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); - - // suspend until message is sent - if (wait_event_interruptible(board->wait, - ((readl(e_priv->write_transfer_counter) & - write_transfer_counter_mask) == length) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state)) - retval = -EIO; - // disable board's dma - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0); - - dmaengine_terminate_all(e_priv->dma_channel); - // make sure fluke_dma_callback got called - if (test_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state)) - fluke_dma_callback(board); - - /* - * if everything went fine, try to wait until last byte is actually - * transmitted across gpib (but don't try _too_ hard) - */ - if (retval == 0) - retval = wait_for_sids_or_sgns(board); - - *bytes_written = readl(e_priv->write_transfer_counter) & write_transfer_counter_mask; - if (WARN_ON_ONCE(*bytes_written > length)) - return -EFAULT; - -cleanup: - dma_unmap_single(board->dev, address, length, DMA_TO_DEVICE); - return retval; -} - -static int fluke_accel_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remainder = length; - size_t transfer_size; - ssize_t retval = 0; - size_t dma_remainder = remainder; - - if (!e_priv->dma_channel) { - dev_err(board->gpib_dev, "No dma channel available, cannot do accel write."); - return -ENXIO; - } - - *bytes_written = 0; - if (length < 1) - return 0; - - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - - if (send_eoi) - --dma_remainder; - - while (dma_remainder > 0) { - size_t num_bytes; - - retval = wait_for_data_out_ready(board); - if (retval < 0) - break; - - transfer_size = (e_priv->dma_buffer_size < dma_remainder) ? - e_priv->dma_buffer_size : dma_remainder; - retval = fluke_dma_write(board, buffer, transfer_size, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - break; - dma_remainder -= num_bytes; - remainder -= num_bytes; - buffer += num_bytes; - if (need_resched()) - schedule(); - } - if (retval < 0) - return retval; - // handle sending of last byte with eoi - if (send_eoi) { - size_t num_bytes; - - if (WARN_ON_ONCE(remainder != 1)) - return -EFAULT; - - /* - * wait until we are sure we will be able to write the data byte - * into the chip before we send AUX_SEOI. This prevents a timeout - * scenerio where we send AUX_SEOI but then timeout without getting - * any bytes into the gpib chip. This will result in the first byte - * of the next write having a spurious EOI set on the first byte. - */ - retval = wait_for_data_out_ready(board); - if (retval < 0) - return retval; - - write_byte(nec_priv, AUX_SEOI, AUXMR); - retval = fluke_dma_write(board, buffer, remainder, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - remainder -= num_bytes; - } - return 0; -} - -static int fluke_get_dma_residue(struct dma_chan *chan, dma_cookie_t cookie) -{ - struct dma_tx_state state; - int result; - - result = dmaengine_pause(chan); - if (result < 0) { - pr_err("dma pause failed?\n"); - return result; - } - dmaengine_tx_status(chan, cookie, &state); - /* - * hardware doesn't support resume, so dont call this - * method unless the dma transfer is done. - */ - return state.residue; -} - -static int fluke_dma_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - unsigned long flags; - int residue; - dma_addr_t bus_address; - struct dma_async_tx_descriptor *tx_desc; - dma_cookie_t dma_cookie; - int i; - static const int timeout = 10; - - *bytes_read = 0; - *end = 0; - if (length == 0) - return 0; - - bus_address = dma_map_single(board->dev, e_priv->dma_buffer, - length, DMA_FROM_DEVICE); - - /* program dma controller */ - retval = fluke_config_dma(board, 0); - if (retval) { - dma_unmap_single(board->dev, bus_address, length, DMA_FROM_DEVICE); - return retval; - } - tx_desc = dmaengine_prep_slave_single(e_priv->dma_channel, - bus_address, length, DMA_DEV_TO_MEM, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!tx_desc) { - dev_err(board->gpib_dev, "failed to allocate dma transmit descriptor\n"); - dma_unmap_single(NULL, bus_address, length, DMA_FROM_DEVICE); - return -EIO; - } - tx_desc->callback = fluke_dma_callback; - tx_desc->callback_param = board; - - spin_lock_irqsave(&board->spinlock, flags); - // enable nec7210 dma - nec7210_set_reg_bits(nec_priv, IMR1, HR_DIIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); - - dma_cookie = dmaengine_submit(tx_desc); - dma_async_issue_pending(e_priv->dma_channel); - - set_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state); - clear_bit(READ_READY_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); - // wait for data to transfer - if (wait_event_interruptible(board->wait, - test_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state) == 0 || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - - /* - * If we woke up because of end, wait until the dma transfer has pulled - * the data byte associated with the end before we cancel the dma transfer. - */ - if (test_bit(RECEIVED_END_BN, &nec_priv->state)) { - for (i = 0; i < timeout; ++i) { - if (test_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state) == 0) - break; - if ((read_byte(nec_priv, ADR0) & DATA_IN_STATUS) == 0) - break; - usleep_range(10, 15); - } - if (i == timeout) - pr_warn("fluke_gpib: timeout waiting for dma to transfer end data byte.\n"); - } - - // stop the dma transfer - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - /* - * delay a little just to make sure any bytes in dma controller's fifo get - * written to memory before we disable it - */ - usleep_range(10, 15); - residue = fluke_get_dma_residue(e_priv->dma_channel, dma_cookie); - if (WARN_ON_ONCE(residue > length || residue < 0)) - return -EFAULT; - *bytes_read += length - residue; - dmaengine_terminate_all(e_priv->dma_channel); - // make sure fluke_dma_callback got called - if (test_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state)) - fluke_dma_callback(board); - - dma_unmap_single(board->dev, bus_address, length, DMA_FROM_DEVICE); - memcpy(buffer, e_priv->dma_buffer, *bytes_read); - - /* - * If we got an end interrupt, figure out if it was - * associated with the last byte we dma'd or with a - * byte still sitting on the cb7210. - */ - spin_lock_irqsave(&board->spinlock, flags); - if (test_bit(READ_READY_BN, &nec_priv->state) == 0) { - /* - * There is no byte sitting on the cb7210. If we - * saw an end interrupt, we need to deal with it now - */ - if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) - *end = 1; - } - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} - -static int fluke_accel_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remain = length; - size_t transfer_size; - int retval = 0; - size_t dma_nbytes; - - *end = 0; - *bytes_read = 0; - - smp_mb__before_atomic(); - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - smp_mb__after_atomic(); - - retval = wait_for_read(board); - if (retval < 0) - return retval; - - nec7210_release_rfd_holdoff(board, nec_priv); - - while (remain > 0) { - transfer_size = (e_priv->dma_buffer_size < remain) ? - e_priv->dma_buffer_size : remain; - retval = fluke_dma_read(board, buffer, transfer_size, end, &dma_nbytes); - remain -= dma_nbytes; - buffer += dma_nbytes; - *bytes_read += dma_nbytes; - if (*end) - break; - if (retval < 0) - return retval; - if (need_resched()) - schedule(); - } - - return retval; -} - -static struct gpib_interface fluke_unaccel_interface = { - .name = "fluke_unaccel", - .attach = fluke_attach_holdoff_all, - .detach = fluke_detach, - .read = fluke_read, - .write = fluke_write, - .command = fluke_command, - .take_control = fluke_take_control, - .go_to_standby = fluke_go_to_standby, - .request_system_control = fluke_request_system_control, - .interface_clear = fluke_interface_clear, - .remote_enable = fluke_remote_enable, - .enable_eos = fluke_enable_eos, - .disable_eos = fluke_disable_eos, - .parallel_poll = fluke_parallel_poll, - .parallel_poll_configure = fluke_parallel_poll_configure, - .parallel_poll_response = fluke_parallel_poll_response, - .line_status = fluke_line_status, - .update_status = fluke_update_status, - .primary_address = fluke_primary_address, - .secondary_address = fluke_secondary_address, - .serial_poll_response = fluke_serial_poll_response, - .serial_poll_status = fluke_serial_poll_status, - .t1_delay = fluke_t1_delay, - .return_to_local = fluke_return_to_local, -}; - -/* - * fluke_hybrid uses dma for writes but not for reads. Added - * to deal with occasional corruption of bytes seen when doing dma - * reads. From looking at the cb7210 vhdl, I believe the corruption - * is due to a hardware bug triggered by the cpu reading a cb7210 - * } - * register just as the dma controller is also doing a read. - */ - -static struct gpib_interface fluke_hybrid_interface = { - .name = "fluke_hybrid", - .attach = fluke_attach_holdoff_all, - .detach = fluke_detach, - .read = fluke_read, - .write = fluke_accel_write, - .command = fluke_command, - .take_control = fluke_take_control, - .go_to_standby = fluke_go_to_standby, - .request_system_control = fluke_request_system_control, - .interface_clear = fluke_interface_clear, - .remote_enable = fluke_remote_enable, - .enable_eos = fluke_enable_eos, - .disable_eos = fluke_disable_eos, - .parallel_poll = fluke_parallel_poll, - .parallel_poll_configure = fluke_parallel_poll_configure, - .parallel_poll_response = fluke_parallel_poll_response, - .line_status = fluke_line_status, - .update_status = fluke_update_status, - .primary_address = fluke_primary_address, - .secondary_address = fluke_secondary_address, - .serial_poll_response = fluke_serial_poll_response, - .serial_poll_status = fluke_serial_poll_status, - .t1_delay = fluke_t1_delay, - .return_to_local = fluke_return_to_local, -}; - -static struct gpib_interface fluke_interface = { - .name = "fluke", - .attach = fluke_attach_holdoff_end, - .detach = fluke_detach, - .read = fluke_accel_read, - .write = fluke_accel_write, - .command = fluke_command, - .take_control = fluke_take_control, - .go_to_standby = fluke_go_to_standby, - .request_system_control = fluke_request_system_control, - .interface_clear = fluke_interface_clear, - .remote_enable = fluke_remote_enable, - .enable_eos = fluke_enable_eos, - .disable_eos = fluke_disable_eos, - .parallel_poll = fluke_parallel_poll, - .parallel_poll_configure = fluke_parallel_poll_configure, - .parallel_poll_response = fluke_parallel_poll_response, - .line_status = fluke_line_status, - .update_status = fluke_update_status, - .primary_address = fluke_primary_address, - .secondary_address = fluke_secondary_address, - .serial_poll_response = fluke_serial_poll_response, - .serial_poll_status = fluke_serial_poll_status, - .t1_delay = fluke_t1_delay, - .return_to_local = fluke_return_to_local, -}; - -irqreturn_t fluke_gpib_internal_interrupt(struct gpib_board *board) -{ - int status0, status1, status2; - struct fluke_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - int retval = IRQ_NONE; - - if (read_byte(nec_priv, ADR0) & DATA_IN_STATUS) - set_bit(READ_READY_BN, &nec_priv->state); - - status0 = fluke_paged_read_byte(priv, ISR0_IMR0, ISR0_IMR0_PAGE); - status1 = read_byte(nec_priv, ISR1); - status2 = read_byte(nec_priv, ISR2); - - if (status0 & FLUKE_IFCI_BIT) { - push_gpib_event(board, EVENT_IFC); - retval = IRQ_HANDLED; - } - - if (nec7210_interrupt_have_status(board, nec_priv, status1, status2) == IRQ_HANDLED) - retval = IRQ_HANDLED; - - if (read_byte(nec_priv, ADR0) & DATA_IN_STATUS) { - if (test_bit(RFD_HOLDOFF_BN, &nec_priv->state)) - set_bit(READ_READY_BN, &nec_priv->state); - else - clear_bit(READ_READY_BN, &nec_priv->state); - } - - if (retval == IRQ_HANDLED) - wake_up_interruptible(&board->wait); - - return retval; -} - -static irqreturn_t fluke_gpib_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = fluke_gpib_internal_interrupt(board); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -static int fluke_allocate_private(struct gpib_board *board) -{ - struct fluke_priv *priv; - - board->private_data = kmalloc(sizeof(struct fluke_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - priv = board->private_data; - memset(priv, 0, sizeof(struct fluke_priv)); - init_nec7210_private(&priv->nec7210_priv); - priv->dma_buffer_size = 0x7ff; - priv->dma_buffer = kmalloc(priv->dma_buffer_size, GFP_KERNEL); - if (!priv->dma_buffer) - return -ENOMEM; - return 0; -} - -static void fluke_generic_detach(struct gpib_board *board) -{ - if (board->private_data) { - struct fluke_priv *e_priv = board->private_data; - - kfree(e_priv->dma_buffer); - kfree(board->private_data); - board->private_data = NULL; - } -} - -// generic part of attach functions shared by all cb7210 boards -static int fluke_generic_attach(struct gpib_board *board) -{ - struct fluke_priv *e_priv; - struct nec7210_priv *nec_priv; - int retval; - - board->status = 0; - - retval = fluke_allocate_private(board); - if (retval < 0) - return retval; - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - nec_priv->read_byte = fluke_locking_read_byte; - nec_priv->write_byte = fluke_locking_write_byte; - nec_priv->offset = fluke_reg_offset; - nec_priv->type = CB7210; - return 0; -} - -static int fluke_config_dma(struct gpib_board *board, int output) -{ - struct fluke_priv *e_priv = board->private_data; - struct dma_slave_config config; - - config.src_maxburst = 1; - config.dst_maxburst = 1; - config.device_fc = true; - - if (output) { - config.direction = DMA_MEM_TO_DEV; - config.src_addr = 0; - config.dst_addr = e_priv->dma_port_res->start; - config.src_addr_width = 1; - config.dst_addr_width = 1; - } else { - config.direction = DMA_DEV_TO_MEM; - config.src_addr = e_priv->dma_port_res->start; - config.dst_addr = 0; - config.src_addr_width = 1; - config.dst_addr_width = 1; - } - return dmaengine_slave_config(e_priv->dma_channel, &config); -} - -static int fluke_init(struct fluke_priv *e_priv, struct gpib_board *board, int handshake_mode) -{ - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - - nec7210_board_reset(nec_priv, board); - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - /* - * set clock register for driving frequency - * ICR should be set to clock in megahertz (1-15) and to zero - * for clocks faster than 15 MHz (max 20MHz) - */ - write_byte(nec_priv, ICR | 10, AUXMR); - nec7210_set_handshake_mode(board, nec_priv, handshake_mode); - - nec7210_board_online(nec_priv, board); - - /* poll so we can detect ATN changes */ - if (gpib_request_pseudo_irq(board, fluke_gpib_interrupt)) { - dev_err(board->gpib_dev, "failed to allocate pseudo_irq\n"); - return -EINVAL; - } - - fluke_paged_write_byte(e_priv, FLUKE_IFCIE_BIT, ISR0_IMR0, ISR0_IMR0_PAGE); - return 0; -} - -/* - * This function is passed to dma_request_channel() in order to - * select the pl330 dma channel which has been hardwired to - * the gpib controller. - */ -static bool gpib_dma_channel_filter(struct dma_chan *chan, void *filter_param) -{ - // select the channel which is wired to the gpib chip - return chan->chan_id == 0; -} - -static int fluke_attach_impl(struct gpib_board *board, const struct gpib_board_config *config, - unsigned int handshake_mode) -{ - struct fluke_priv *e_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - int retval; - int irq; - struct resource *res; - dma_cap_mask_t dma_cap; - - if (!fluke_gpib_pdev) { - dev_err(board->gpib_dev, "No fluke device was found, attach failed.\n"); - return -ENODEV; - } - - retval = fluke_generic_attach(board); - if (retval) - return retval; - - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - nec_priv->offset = fluke_reg_offset; - board->dev = &fluke_gpib_pdev->dev; - - res = platform_get_resource(fluke_gpib_pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&fluke_gpib_pdev->dev, "Unable to locate mmio resource\n"); - return -ENODEV; - } - - if (request_mem_region(res->start, - resource_size(res), - fluke_gpib_pdev->name) == NULL) { - dev_err(&fluke_gpib_pdev->dev, "cannot claim registers\n"); - return -ENXIO; - } - e_priv->gpib_iomem_res = res; - - nec_priv->mmiobase = ioremap(e_priv->gpib_iomem_res->start, - resource_size(e_priv->gpib_iomem_res)); - if (!nec_priv->mmiobase) { - dev_err(&fluke_gpib_pdev->dev, "Could not map I/O memory\n"); - return -ENOMEM; - } - - res = platform_get_resource(fluke_gpib_pdev, IORESOURCE_MEM, 1); - if (!res) { - dev_err(&fluke_gpib_pdev->dev, "Unable to locate mmio resource for gpib dma port\n"); - return -ENODEV; - } - if (request_mem_region(res->start, - resource_size(res), - fluke_gpib_pdev->name) == NULL) { - dev_err(&fluke_gpib_pdev->dev, "cannot claim registers\n"); - return -ENXIO; - } - e_priv->dma_port_res = res; - - res = platform_get_resource(fluke_gpib_pdev, IORESOURCE_MEM, 2); - if (!res) { - dev_err(&fluke_gpib_pdev->dev, "Unable to locate mmio resource for write transfer counter\n"); - return -ENODEV; - } - - if (request_mem_region(res->start, - resource_size(res), - fluke_gpib_pdev->name) == NULL) { - dev_err(&fluke_gpib_pdev->dev, "cannot claim registers\n"); - return -ENXIO; - } - e_priv->write_transfer_counter_res = res; - - e_priv->write_transfer_counter = ioremap(e_priv->write_transfer_counter_res->start, - resource_size(e_priv->write_transfer_counter_res)); - if (!e_priv->write_transfer_counter) { - dev_err(&fluke_gpib_pdev->dev, "Could not map I/O memory\n"); - return -ENOMEM; - } - - irq = platform_get_irq(fluke_gpib_pdev, 0); - if (irq < 0) - return -EBUSY; - retval = request_irq(irq, fluke_gpib_interrupt, isr_flags, fluke_gpib_pdev->name, board); - if (retval) { - dev_err(&fluke_gpib_pdev->dev, - "cannot register interrupt handler err=%d\n", - retval); - return retval; - } - e_priv->irq = irq; - - dma_cap_zero(dma_cap); - dma_cap_set(DMA_SLAVE, dma_cap); - e_priv->dma_channel = dma_request_channel(dma_cap, gpib_dma_channel_filter, NULL); - if (!e_priv->dma_channel) { - dev_err(board->gpib_dev, "failed to allocate a dma channel.\n"); - /* - * we don't error out here because unaccel interface will still - * work without dma - */ - } - - return fluke_init(e_priv, board, handshake_mode); -} - -int fluke_attach_holdoff_all(struct gpib_board *board, const struct gpib_board_config *config) -{ - return fluke_attach_impl(board, config, HR_HLDA); -} - -int fluke_attach_holdoff_end(struct gpib_board *board, const struct gpib_board_config *config) -{ - return fluke_attach_impl(board, config, HR_HLDE); -} - -void fluke_detach(struct gpib_board *board) -{ - struct fluke_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (e_priv) { - if (e_priv->dma_channel) - dma_release_channel(e_priv->dma_channel); - gpib_free_pseudo_irq(board); - nec_priv = &e_priv->nec7210_priv; - - if (nec_priv->mmiobase) { - fluke_paged_write_byte(e_priv, 0, ISR0_IMR0, ISR0_IMR0_PAGE); - nec7210_board_reset(nec_priv, board); - } - if (e_priv->irq) - free_irq(e_priv->irq, board); - if (e_priv->write_transfer_counter_res) { - release_mem_region(e_priv->write_transfer_counter_res->start, - resource_size(e_priv->write_transfer_counter_res)); - } - if (e_priv->dma_port_res) { - release_mem_region(e_priv->dma_port_res->start, - resource_size(e_priv->dma_port_res)); - } - if (e_priv->gpib_iomem_res) - release_mem_region(e_priv->gpib_iomem_res->start, - resource_size(e_priv->gpib_iomem_res)); - } - fluke_generic_detach(board); -} - -static int fluke_gpib_probe(struct platform_device *pdev) -{ - fluke_gpib_pdev = pdev; - return 0; -} - -static const struct of_device_id fluke_gpib_of_match[] = { - { .compatible = "flk,fgpib-4.0"}, - { {0} } -}; -MODULE_DEVICE_TABLE(of, fluke_gpib_of_match); - -static struct platform_driver fluke_gpib_platform_driver = { - .driver = { - .name = DRV_NAME, - .of_match_table = fluke_gpib_of_match, - }, - .probe = &fluke_gpib_probe -}; - -static int __init fluke_init_module(void) -{ - int result; - - result = platform_driver_register(&fluke_gpib_platform_driver); - if (result) { - pr_err("platform_driver_register failed: error = %d\n", result); - return result; - } - - result = gpib_register_driver(&fluke_unaccel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_unaccel; - } - - result = gpib_register_driver(&fluke_hybrid_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_hybrid; - } - - result = gpib_register_driver(&fluke_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_interface; - } - - return 0; - -err_interface: - gpib_unregister_driver(&fluke_hybrid_interface); -err_hybrid: - gpib_unregister_driver(&fluke_unaccel_interface); -err_unaccel: - platform_driver_unregister(&fluke_gpib_platform_driver); - - return result; -} - -static void __exit fluke_exit_module(void) -{ - gpib_unregister_driver(&fluke_unaccel_interface); - gpib_unregister_driver(&fluke_hybrid_interface); - gpib_unregister_driver(&fluke_interface); - platform_driver_unregister(&fluke_gpib_platform_driver); -} - -module_init(fluke_init_module); -module_exit(fluke_exit_module); diff --git a/drivers/staging/gpib/eastwood/fluke_gpib.h b/drivers/staging/gpib/eastwood/fluke_gpib.h deleted file mode 100644 index 493c200d0bbf..000000000000 --- a/drivers/staging/gpib/eastwood/fluke_gpib.h +++ /dev/null @@ -1,146 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Author: Frank Mori Hess <fmh6jj@gmail.com> - * copyright: (C) 2006, 2010, 2015 Fluke Corporation - ***************************************************************************/ - -#include <linux/compiler.h> -#include <linux/dmaengine.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include "nec7210.h" - -struct fluke_priv { - struct nec7210_priv nec7210_priv; - struct resource *gpib_iomem_res; - struct resource *write_transfer_counter_res; - struct resource *dma_port_res; - int irq; - struct dma_chan *dma_channel; - u8 *dma_buffer; - int dma_buffer_size; - void __iomem *write_transfer_counter; -}; - -// cb7210 specific registers and bits -enum cb7210_regs { - STATE1_REG = 0x4, - ISR0_IMR0 = 0x6, - BUS_STATUS = 0x7 -}; - -enum cb7210_page_in { - ISR0_IMR0_PAGE = 1, - BUS_STATUS_PAGE = 1, - STATE1_PAGE = 1 -}; - -/* IMR0 -- Interrupt Mode Register 0 */ -enum imr0_bits { - FLUKE_IFCIE_BIT = 0x8, /* interface clear interrupt */ -}; - -/* ISR0 -- Interrupt Status Register 0 */ -enum isr0_bits { - FLUKE_IFCI_BIT = 0x8, /* interface clear interrupt */ -}; - -enum state1_bits { - SOURCE_HANDSHAKE_SIDS_BITS = 0x0, /* source idle state */ - SOURCE_HANDSHAKE_SGNS_BITS = 0x1, /* source generate state */ - SOURCE_HANDSHAKE_SDYS_BITS = 0x2, /* source delay state */ - SOURCE_HANDSHAKE_STRS_BITS = 0x5, /* source transfer state */ - SOURCE_HANDSHAKE_MASK = 0x7 -}; - -/* - * we customized the cb7210 vhdl to give the "data in" status - * on the unused bit 7 of the address0 register. - */ -enum cb7210_address0 { - DATA_IN_STATUS = 0x80 -}; - -static inline int cb7210_page_in_bits(unsigned int page) -{ - return 0x50 | (page & 0xf); -} - -// don't use without locking nec_priv->register_page_lock -static inline u8 fluke_read_byte_nolock(struct nec7210_priv *nec_priv, - int register_num) -{ - u8 retval; - - retval = readl(nec_priv->mmiobase + register_num * nec_priv->offset); - return retval; -} - -// don't use without locking nec_priv->register_page_lock -static inline void fluke_write_byte_nolock(struct nec7210_priv *nec_priv, u8 data, - int register_num) -{ - writel(data, nec_priv->mmiobase + register_num * nec_priv->offset); -} - -static inline u8 fluke_paged_read_byte(struct fluke_priv *e_priv, - unsigned int register_num, unsigned int page) -{ - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - u8 retval; - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - fluke_write_byte_nolock(nec_priv, cb7210_page_in_bits(page), AUXMR); - udelay(1); - /* chip auto clears the page after a read */ - retval = fluke_read_byte_nolock(nec_priv, register_num); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); - return retval; -} - -static inline void fluke_paged_write_byte(struct fluke_priv *e_priv, u8 data, - unsigned int register_num, unsigned int page) -{ - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&nec_priv->register_page_lock, flags); - fluke_write_byte_nolock(nec_priv, cb7210_page_in_bits(page), AUXMR); - udelay(1); - fluke_write_byte_nolock(nec_priv, data, register_num); - spin_unlock_irqrestore(&nec_priv->register_page_lock, flags); -} - -enum bus_status_bits { - BSR_ATN_BIT = 0x1, - BSR_EOI_BIT = 0x2, - BSR_SRQ_BIT = 0x4, - BSR_IFC_BIT = 0x8, - BSR_REN_BIT = 0x10, - BSR_DAV_BIT = 0x20, - BSR_NRFD_BIT = 0x40, - BSR_NDAC_BIT = 0x80, -}; - -enum cb7210_aux_cmds { -/* - * AUX_RTL2 is an undocumented aux command which causes cb7210 to assert - * (and keep asserted) local rtl message. This is used in conjunction - * with the (stupid) cb7210 implementation - * of the normal nec7210 AUX_RTL aux command, which - * causes the rtl message to toggle between on and off. - */ - AUX_RTL2 = 0xd, - AUX_NBAF = 0xe, // new byte available false (also clears seoi) - AUX_LO_SPEED = 0x40, - AUX_HI_SPEED = 0x41, -}; - -enum { - fluke_reg_offset = 4, - fluke_num_regs = 8, - write_transfer_counter_mask = 0x7ff, -}; diff --git a/drivers/staging/gpib/fmh_gpib/Makefile b/drivers/staging/gpib/fmh_gpib/Makefile deleted file mode 100644 index cc4d9e7cd5cd..000000000000 --- a/drivers/staging/gpib/fmh_gpib/Makefile +++ /dev/null @@ -1,2 +0,0 @@ - -obj-$(CONFIG_GPIB_FMH) += fmh_gpib.o diff --git a/drivers/staging/gpib/fmh_gpib/fmh_gpib.c b/drivers/staging/gpib/fmh_gpib/fmh_gpib.c deleted file mode 100644 index f7bfb4a8e553..000000000000 --- a/drivers/staging/gpib/fmh_gpib/fmh_gpib.c +++ /dev/null @@ -1,1754 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * GPIB Driver for fmh_gpib_core, see - * https://github.com/fmhess/fmh_gpib_core - * - * More specifically, it is a driver for the hardware arrangement described by - * src/examples/fmh_gpib_top.vhd in the fmh_gpib_core repository. - * - * Author: Frank Mori Hess <fmh6jj@gmail.com> - * Copyright: (C) 2006, 2010, 2015 Fluke Corporation - * (C) 2017 Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "fmh_gpib.h" - -#include "gpibP.h" -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/slab.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB Driver for fmh_gpib_core"); -MODULE_AUTHOR("Frank Mori Hess <fmh6jj@gmail.com>"); - -static irqreturn_t fmh_gpib_interrupt(int irq, void *arg); -static int fmh_gpib_attach_holdoff_all(struct gpib_board *board, - const struct gpib_board_config *config); -static int fmh_gpib_attach_holdoff_end(struct gpib_board *board, - const struct gpib_board_config *config); -static void fmh_gpib_detach(struct gpib_board *board); -static int fmh_gpib_pci_attach_holdoff_all(struct gpib_board *board, - const struct gpib_board_config *config); -static int fmh_gpib_pci_attach_holdoff_end(struct gpib_board *board, - const struct gpib_board_config *config); -static void fmh_gpib_pci_detach(struct gpib_board *board); -static int fmh_gpib_config_dma(struct gpib_board *board, int output); -static irqreturn_t fmh_gpib_internal_interrupt(struct gpib_board *board); -static struct platform_driver fmh_gpib_platform_driver; -static struct pci_driver fmh_gpib_pci_driver; - -// wrappers for interface functions -static int fmh_gpib_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); -} - -static int fmh_gpib_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int fmh_gpib_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int fmh_gpib_take_control(struct gpib_board *board, int synchronous) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int fmh_gpib_go_to_standby(struct gpib_board *board) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int fmh_gpib_request_system_control(struct gpib_board *board, int request_control) -{ - struct fmh_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - return nec7210_request_system_control(board, nec_priv, request_control); -} - -static void fmh_gpib_interface_clear(struct gpib_board *board, int assert) -{ - struct fmh_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void fmh_gpib_remote_enable(struct gpib_board *board, int enable) -{ - struct fmh_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int fmh_gpib_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void fmh_gpib_disable_eos(struct gpib_board *board) -{ - struct fmh_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int fmh_gpib_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int fmh_gpib_primary_address(struct gpib_board *board, unsigned int address) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int fmh_gpib_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int fmh_gpib_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void fmh_gpib_parallel_poll_configure(struct gpib_board *board, u8 configuration) -{ - struct fmh_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, configuration); -} - -static void fmh_gpib_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct fmh_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void fmh_gpib_local_parallel_poll_mode(struct gpib_board *board, int local) -{ - struct fmh_priv *priv = board->private_data; - - if (local) { - write_byte(&priv->nec7210_priv, AUX_I_REG | LOCAL_PPOLL_MODE_BIT, AUXMR); - } else { - /* - * For fmh_gpib_core, remote parallel poll config mode is unaffected by the - * state of the disable bit of the parallel poll register (unlike the tnt4882). - * So, we don't need to worry about that. - */ - write_byte(&priv->nec7210_priv, AUX_I_REG | 0x0, AUXMR); - } -} - -static void fmh_gpib_serial_poll_response2(struct gpib_board *board, u8 status, - int new_reason_for_service) -{ - struct fmh_priv *priv = board->private_data; - unsigned long flags; - const int MSS = status & request_service_bit; - const int reqt = MSS && new_reason_for_service; - const int reqf = MSS == 0; - - spin_lock_irqsave(&board->spinlock, flags); - if (reqt) { - priv->nec7210_priv.srq_pending = 1; - clear_bit(SPOLL_NUM, &board->status); - } else if (reqf) { - priv->nec7210_priv.srq_pending = 0; - } - - if (reqt) { - /* - * It may seem like a race to issue reqt before updating - * the status byte, but it is not. The chip does not - * issue the reqt until the SPMR is written to at - * a later time. - */ - write_byte(&priv->nec7210_priv, AUX_REQT, AUXMR); - } else if (reqf) { - write_byte(&priv->nec7210_priv, AUX_REQF, AUXMR); - } - /* - * We need to always zero bit 6 of the status byte before writing it to - * the SPMR to insure we are using - * serial poll mode SP1, and not accidentally triggering mode SP3. - */ - write_byte(&priv->nec7210_priv, status & ~request_service_bit, SPMR); - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static u8 fmh_gpib_serial_poll_status(struct gpib_board *board) -{ - struct fmh_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static void fmh_gpib_return_to_local(struct gpib_board *board) -{ - struct fmh_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - write_byte(nec_priv, AUX_RTL2, AUXMR); - udelay(1); - write_byte(nec_priv, AUX_RTL, AUXMR); -} - -static int fmh_gpib_line_status(const struct gpib_board *board) -{ - int status = VALID_ALL; - int bsr_bits; - struct fmh_priv *e_priv; - struct nec7210_priv *nec_priv; - - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - - bsr_bits = read_byte(nec_priv, BUS_STATUS_REG); - - if ((bsr_bits & BSR_REN_BIT) == 0) - status |= BUS_REN; - if ((bsr_bits & BSR_IFC_BIT) == 0) - status |= BUS_IFC; - if ((bsr_bits & BSR_SRQ_BIT) == 0) - status |= BUS_SRQ; - if ((bsr_bits & BSR_EOI_BIT) == 0) - status |= BUS_EOI; - if ((bsr_bits & BSR_NRFD_BIT) == 0) - status |= BUS_NRFD; - if ((bsr_bits & BSR_NDAC_BIT) == 0) - status |= BUS_NDAC; - if ((bsr_bits & BSR_DAV_BIT) == 0) - status |= BUS_DAV; - if ((bsr_bits & BSR_ATN_BIT) == 0) - status |= BUS_ATN; - - return status; -} - -static int fmh_gpib_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned int retval; - - retval = nec7210_t1_delay(board, nec_priv, nano_sec); - - if (nano_sec <= 350) { - write_byte(nec_priv, AUX_HI_SPEED, AUXMR); - retval = 350; - } else { - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - } - return retval; -} - -static int lacs_or_read_ready(struct gpib_board *board) -{ - const struct fmh_priv *e_priv = board->private_data; - const struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - retval = test_bit(LACS_NUM, &board->status) || - test_bit(READ_READY_BN, &nec_priv->state); - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} - -static int wait_for_read(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - lacs_or_read_ready(board) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - return retval; -} - -static int wait_for_rx_fifo_half_full_or_end(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - (fifos_read(e_priv, FIFO_CONTROL_STATUS_REG) & - RX_FIFO_HALF_FULL) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - return retval; -} - -/* - * Wait until the gpib chip is ready to accept a data out byte. - */ -static int wait_for_data_out_ready(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - (test_bit(TACS_NUM, &board->status) && - (read_byte(nec_priv, EXT_STATUS_1_REG) & - DATA_OUT_STATUS_BIT)) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - - return retval; -} - -static void fmh_gpib_dma_callback(void *arg) -{ - struct gpib_board *board = arg; - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE | HR_DIIE, HR_DOIE | HR_DIIE); - wake_up_interruptible(&board->wait); - - fmh_gpib_internal_interrupt(board); - - clear_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state); - clear_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); -} - -/* - * returns true when all the bytes of a write have been transferred to - * the chip and successfully transferred out over the gpib bus. - */ -static int fmh_gpib_all_bytes_are_sent(struct fmh_priv *e_priv) -{ - if (fifos_read(e_priv, FIFO_XFER_COUNTER_REG) & fifo_xfer_counter_mask) - return 0; - - if ((read_byte(&e_priv->nec7210_priv, EXT_STATUS_1_REG) & DATA_OUT_STATUS_BIT) == 0) - return 0; - - return 1; -} - -static int fmh_gpib_dma_write(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - int retval = 0; - dma_addr_t address; - struct dma_async_tx_descriptor *tx_desc; - - *bytes_written = 0; - if (WARN_ON_ONCE(length > e_priv->dma_buffer_size)) - return -EFAULT; - dmaengine_terminate_all(e_priv->dma_channel); - memcpy(e_priv->dma_buffer, buffer, length); - address = dma_map_single(board->dev, e_priv->dma_buffer, length, DMA_TO_DEVICE); - if (dma_mapping_error(board->dev, address)) - dev_err(board->gpib_dev, "dma mapping error in dma write!\n"); - /* program dma controller */ - retval = fmh_gpib_config_dma(board, 1); - if (retval) - goto cleanup; - - tx_desc = dmaengine_prep_slave_single(e_priv->dma_channel, address, length, DMA_MEM_TO_DEV, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!tx_desc) { - dev_err(board->gpib_dev, "failed to allocate dma transmit descriptor\n"); - retval = -ENOMEM; - goto cleanup; - } - tx_desc->callback = fmh_gpib_dma_callback; - tx_desc->callback_param = board; - - spin_lock_irqsave(&board->spinlock, flags); - fifos_write(e_priv, length & fifo_xfer_counter_mask, FIFO_XFER_COUNTER_REG); - fifos_write(e_priv, TX_FIFO_DMA_REQUEST_ENABLE | TX_FIFO_CLEAR, FIFO_CONTROL_STATUS_REG); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO); - - dmaengine_submit(tx_desc); - dma_async_issue_pending(e_priv->dma_channel); - clear_bit(WRITE_READY_BN, &nec_priv->state); - set_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); - - // suspend until message is sent - if (wait_event_interruptible(board->wait, - fmh_gpib_all_bytes_are_sent(e_priv) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state)) - retval = -EIO; - // disable board's dma - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0); - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - - dmaengine_terminate_all(e_priv->dma_channel); - // make sure fmh_gpib_dma_callback got called - if (test_bit(DMA_WRITE_IN_PROGRESS_BN, &nec_priv->state)) - fmh_gpib_dma_callback(board); - - *bytes_written = length - (fifos_read(e_priv, FIFO_XFER_COUNTER_REG) & - fifo_xfer_counter_mask); - if (WARN_ON_ONCE(*bytes_written > length)) - return -EFAULT; -cleanup: - dma_unmap_single(board->dev, address, length, DMA_TO_DEVICE); - return retval; -} - -static int fmh_gpib_accel_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remainder = length; - size_t transfer_size; - ssize_t retval = 0; - size_t dma_remainder = remainder; - - if (!e_priv->dma_channel) { - dev_err(board->gpib_dev, "No dma channel available, cannot do accel write."); - return -ENXIO; - } - - *bytes_written = 0; - if (length < 1) - return 0; - - smp_mb__before_atomic(); - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - smp_mb__after_atomic(); - - if (send_eoi) - --dma_remainder; - - while (dma_remainder > 0) { - size_t num_bytes; - - retval = wait_for_data_out_ready(board); - if (retval < 0) - break; - - transfer_size = (e_priv->dma_buffer_size < dma_remainder) ? - e_priv->dma_buffer_size : dma_remainder; - retval = fmh_gpib_dma_write(board, buffer, transfer_size, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - break; - dma_remainder -= num_bytes; - remainder -= num_bytes; - buffer += num_bytes; - if (need_resched()) - schedule(); - } - if (retval < 0) - return retval; - // handle sending of last byte with eoi - if (send_eoi) { - size_t num_bytes; - - if (WARN_ON_ONCE(remainder != 1)) - return -EFAULT; - - /* - * wait until we are sure we will be able to write the data byte - * into the chip before we send AUX_SEOI. This prevents a timeout - * scenario where we send AUX_SEOI but then timeout without getting - * any bytes into the gpib chip. This will result in the first byte - * of the next write having a spurious EOI set on the first byte. - */ - retval = wait_for_data_out_ready(board); - if (retval < 0) - return retval; - - write_byte(nec_priv, AUX_SEOI, AUXMR); - retval = fmh_gpib_dma_write(board, buffer, remainder, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - remainder -= num_bytes; - } - return 0; -} - -static int fmh_gpib_get_dma_residue(struct dma_chan *chan, dma_cookie_t cookie) -{ - struct dma_tx_state state; - int result; - - result = dmaengine_pause(chan); - if (result < 0) { - pr_err("dma pause failed?\n"); - return result; - } - dmaengine_tx_status(chan, cookie, &state); - /* - * dma330 hardware doesn't support resume, so dont call this - * method unless the dma transfer is done. - */ - return state.residue; -} - -static int wait_for_tx_fifo_half_empty(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - if (wait_event_interruptible(board->wait, - (test_bit(TACS_NUM, &board->status) && - (fifos_read(e_priv, FIFO_CONTROL_STATUS_REG) & - TX_FIFO_HALF_EMPTY)) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - - return retval; -} - -/* - * supports writing a chunk of data whose length must fit into the hardware'd xfer counter, - * called in a loop by fmh_gpib_fifo_write() - */ -static int fmh_gpib_fifo_write_countable(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - unsigned int remainder; - - *bytes_written = 0; - if (WARN_ON_ONCE(length > fifo_xfer_counter_mask)) - return -EFAULT; - - fifos_write(e_priv, length & fifo_xfer_counter_mask, FIFO_XFER_COUNTER_REG); - fifos_write(e_priv, TX_FIFO_CLEAR, FIFO_CONTROL_STATUS_REG); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO); - - remainder = length; - while (remainder > 0) { - int i; - - fifos_write(e_priv, TX_FIFO_HALF_EMPTY_INTERRUPT_ENABLE, FIFO_CONTROL_STATUS_REG); - retval = wait_for_tx_fifo_half_empty(board); - if (retval < 0) - goto cleanup; - - for (i = 0; i < fmh_gpib_half_fifo_size(e_priv) && remainder > 0; ++i) { - unsigned int data_value = *buffer; - - if (send_eoi && remainder == 1) - data_value |= FIFO_DATA_EOI_FLAG; - fifos_write(e_priv, data_value, FIFO_DATA_REG); - ++buffer; - --remainder; - } - } - - // suspend until last byte is sent - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, HR_DOIE); - if (wait_event_interruptible(board->wait, - fmh_gpib_all_bytes_are_sent(e_priv) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state)) - retval = -EIO; - -cleanup: - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0); - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - - *bytes_written = length - (fifos_read(e_priv, FIFO_XFER_COUNTER_REG) & - fifo_xfer_counter_mask); - if (WARN_ON_ONCE(*bytes_written > length)) - return -EFAULT; - - return retval; -} - -static int fmh_gpib_fifo_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remainder = length; - size_t transfer_size; - ssize_t retval = 0; - - *bytes_written = 0; - if (length < 1) - return 0; - - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - - while (remainder > 0) { - size_t num_bytes; - int last_pass; - - retval = wait_for_data_out_ready(board); - if (retval < 0) - break; - - if (fifo_xfer_counter_mask < remainder) { - // round transfer size to a multiple of half fifo size - transfer_size = (fifo_xfer_counter_mask / - fmh_gpib_half_fifo_size(e_priv)) * - fmh_gpib_half_fifo_size(e_priv); - last_pass = 0; - } else { - transfer_size = remainder; - last_pass = 1; - } - retval = fmh_gpib_fifo_write_countable(board, buffer, transfer_size, - last_pass && send_eoi, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - break; - remainder -= num_bytes; - buffer += num_bytes; - if (need_resched()) - schedule(); - } - - return retval; -} - -static int fmh_gpib_dma_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - unsigned long flags; - int residue; - int wait_retval; - dma_addr_t bus_address; - struct dma_async_tx_descriptor *tx_desc; - dma_cookie_t dma_cookie; - - *bytes_read = 0; - *end = 0; - if (length == 0) - return 0; - - bus_address = dma_map_single(board->dev, e_priv->dma_buffer, - length, DMA_FROM_DEVICE); - if (dma_mapping_error(board->dev, bus_address)) - dev_err(board->gpib_dev, "dma mapping error in dma read!"); - - /* program dma controller */ - retval = fmh_gpib_config_dma(board, 0); - if (retval) { - dma_unmap_single(board->dev, bus_address, length, DMA_FROM_DEVICE); - return retval; - } - tx_desc = dmaengine_prep_slave_single(e_priv->dma_channel, bus_address, - length, DMA_DEV_TO_MEM, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!tx_desc) { - dev_err(board->gpib_dev, "failed to allocate dma transmit descriptor\n"); - dma_unmap_single(board->dev, bus_address, length, DMA_FROM_DEVICE); - return -EIO; - } - tx_desc->callback = fmh_gpib_dma_callback; - tx_desc->callback_param = board; - - spin_lock_irqsave(&board->spinlock, flags); - // enable nec7210 dma - fifos_write(e_priv, length & fifo_xfer_counter_mask, FIFO_XFER_COUNTER_REG); - fifos_write(e_priv, RX_FIFO_DMA_REQUEST_ENABLE | RX_FIFO_CLEAR, FIFO_CONTROL_STATUS_REG); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DIIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); - - dma_cookie = dmaengine_submit(tx_desc); - dma_async_issue_pending(e_priv->dma_channel); - - set_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); - - // wait for data to transfer - wait_retval = wait_event_interruptible(board->wait, - test_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state) - == 0 || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status)); - if (wait_retval) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - // stop the dma transfer - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - /* - * give time for pl330 to transfer any in-flight data, since - * pl330 will throw it away when dmaengine_pause is called. - */ - usleep_range(10, 15); - residue = fmh_gpib_get_dma_residue(e_priv->dma_channel, dma_cookie); - if (WARN_ON_ONCE(residue > length || residue < 0)) - return -EFAULT; - *bytes_read += length - residue; - dmaengine_terminate_all(e_priv->dma_channel); - // make sure fmh_gpib_dma_callback got called - if (test_bit(DMA_READ_IN_PROGRESS_BN, &nec_priv->state)) - fmh_gpib_dma_callback(board); - - dma_unmap_single(board->dev, bus_address, length, DMA_FROM_DEVICE); - memcpy(buffer, e_priv->dma_buffer, *bytes_read); - - /* Manually read any dregs out of fifo. */ - while ((fifos_read(e_priv, FIFO_CONTROL_STATUS_REG) & RX_FIFO_EMPTY) == 0) { - if ((*bytes_read) >= length) { - dev_err(board->dev, "unexpected extra bytes in rx fifo, discarding! bytes_read=%d length=%d residue=%d\n", - (int)(*bytes_read), (int)length, (int)residue); - break; - } - buffer[(*bytes_read)++] = fifos_read(e_priv, FIFO_DATA_REG) & fifo_data_mask; - } - - /* - * If we got an end interrupt, figure out if it was - * associated with the last byte we dma'd or with a - * byte still sitting on the cb7210. - */ - spin_lock_irqsave(&board->spinlock, flags); - if (*bytes_read > 0 && test_bit(READ_READY_BN, &nec_priv->state) == 0) { - /* - * If there is no byte sitting on the cb7210 and we - * saw an end, we need to deal with it now - */ - if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) - *end = 1; - } - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} - -static void fmh_gpib_release_rfd_holdoff(struct gpib_board *board, struct fmh_priv *e_priv) -{ - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned int ext_status_1; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - ext_status_1 = read_byte(nec_priv, EXT_STATUS_1_REG); - - /* - * if there is an end byte sitting on the chip, don't release - * holdoff. We want it left set after we read out the end - * byte. - */ - if ((ext_status_1 & (DATA_IN_STATUS_BIT | END_STATUS_BIT)) != - (DATA_IN_STATUS_BIT | END_STATUS_BIT)) { - if (ext_status_1 & RFD_HOLDOFF_STATUS_BIT) - write_byte(nec_priv, AUX_FH, AUXMR); - - /* - * Check if an end byte raced in before we executed the AUX_FH command. - * If it did, we want to make sure the rfd holdoff is in effect. The end - * byte can arrive since - * AUX_RFD_HOLDOFF_ASAP doesn't immediately force the acceptor handshake - * to leave ACRS. - */ - if ((read_byte(nec_priv, EXT_STATUS_1_REG) & - (RFD_HOLDOFF_STATUS_BIT | DATA_IN_STATUS_BIT | END_STATUS_BIT)) == - (DATA_IN_STATUS_BIT | END_STATUS_BIT)) { - write_byte(nec_priv, AUX_RFD_HOLDOFF_ASAP, AUXMR); - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - } else { - clear_bit(RFD_HOLDOFF_BN, &nec_priv->state); - } - } - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static int fmh_gpib_accel_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remain = length; - size_t transfer_size; - int retval = 0; - size_t dma_nbytes; - unsigned long flags; - - smp_mb__before_atomic(); - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - smp_mb__after_atomic(); - *end = 0; - *bytes_read = 0; - - retval = wait_for_read(board); - if (retval < 0) - return retval; - - fmh_gpib_release_rfd_holdoff(board, e_priv); - while (remain > 0) { - transfer_size = (e_priv->dma_buffer_size < remain) ? - e_priv->dma_buffer_size : remain; - retval = fmh_gpib_dma_read(board, buffer, transfer_size, end, &dma_nbytes); - remain -= dma_nbytes; - buffer += dma_nbytes; - *bytes_read += dma_nbytes; - if (*end) - break; - if (retval < 0) - break; - if (need_resched()) - schedule(); - } - - spin_lock_irqsave(&board->spinlock, flags); - if (test_bit(RFD_HOLDOFF_BN, &nec_priv->state) == 0) { - write_byte(nec_priv, AUX_RFD_HOLDOFF_ASAP, AUXMR); - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - } - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} - -/* - * Read a chunk of data whose length is within the limits of the hardware's - * xfer counter. Called in a loop from fmh_gpib_fifo_read(). - */ -static int fmh_gpib_fifo_read_countable(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - int retval = 0; - - *bytes_read = 0; - *end = 0; - if (length == 0) - return 0; - - fifos_write(e_priv, length & fifo_xfer_counter_mask, FIFO_XFER_COUNTER_REG); - fifos_write(e_priv, RX_FIFO_CLEAR, FIFO_CONTROL_STATUS_REG); - nec7210_set_reg_bits(nec_priv, IMR1, HR_DIIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); - - while (*bytes_read < length && *end == 0) { - int i; - - fifos_write(e_priv, RX_FIFO_HALF_FULL_INTERRUPT_ENABLE, FIFO_CONTROL_STATUS_REG); - retval = wait_for_rx_fifo_half_full_or_end(board); - if (retval < 0) - goto cleanup; - - for (i = 0; i < fmh_gpib_half_fifo_size(e_priv) && *end == 0; ++i) { - unsigned int data_value; - - data_value = fifos_read(e_priv, FIFO_DATA_REG); - buffer[(*bytes_read)++] = data_value & fifo_data_mask; - if (data_value & FIFO_DATA_EOI_FLAG) - *end = 1; - } - } - -cleanup: - // stop the transfer - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - - /* Manually read any dregs out of fifo. */ - while ((fifos_read(e_priv, FIFO_CONTROL_STATUS_REG) & RX_FIFO_EMPTY) == 0) { - unsigned int data_value; - - if ((*bytes_read) >= length) { - dev_err(board->dev, "unexpected extra bytes in rx fifo, discarding! bytes_read=%d length=%d\n", - (int)(*bytes_read), (int)length); - break; - } - data_value = fifos_read(e_priv, FIFO_DATA_REG); - buffer[(*bytes_read)++] = data_value & fifo_data_mask; - if (data_value & FIFO_DATA_EOI_FLAG) - *end = 1; - } - - return retval; -} - -static int fmh_gpib_fifo_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - size_t remain = length; - size_t transfer_size; - int retval = 0; - size_t nbytes; - unsigned long flags; - - clear_bit(DEV_CLEAR_BN, &nec_priv->state); // XXX FIXME - *end = 0; - *bytes_read = 0; - - /* - * Do a little prep with data in interrupt so that following wait_for_read() - * will wake up if a data byte is received. - */ - nec7210_set_reg_bits(nec_priv, IMR1, HR_DIIE, HR_DIIE); - fmh_gpib_interrupt(0, board); - - retval = wait_for_read(board); - if (retval < 0) - return retval; - - fmh_gpib_release_rfd_holdoff(board, e_priv); - while (remain > 0) { - if (fifo_xfer_counter_mask < remain) { - // round transfer size to a multiple of half fifo size - transfer_size = (fifo_xfer_counter_mask / - fmh_gpib_half_fifo_size(e_priv)) * - fmh_gpib_half_fifo_size(e_priv); - } else { - transfer_size = remain; - } - retval = fmh_gpib_fifo_read_countable(board, buffer, transfer_size, end, &nbytes); - remain -= nbytes; - buffer += nbytes; - *bytes_read += nbytes; - if (*end) - break; - if (retval < 0) - break; - if (need_resched()) - schedule(); - } - - if (*end == 0) { - spin_lock_irqsave(&board->spinlock, flags); - write_byte(nec_priv, AUX_RFD_HOLDOFF_ASAP, AUXMR); - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - spin_unlock_irqrestore(&board->spinlock, flags); - } - - return retval; -} - -static struct gpib_interface fmh_gpib_unaccel_interface = { - .name = "fmh_gpib_unaccel", - .attach = fmh_gpib_attach_holdoff_all, - .detach = fmh_gpib_detach, - .read = fmh_gpib_read, - .write = fmh_gpib_write, - .command = fmh_gpib_command, - .take_control = fmh_gpib_take_control, - .go_to_standby = fmh_gpib_go_to_standby, - .request_system_control = fmh_gpib_request_system_control, - .interface_clear = fmh_gpib_interface_clear, - .remote_enable = fmh_gpib_remote_enable, - .enable_eos = fmh_gpib_enable_eos, - .disable_eos = fmh_gpib_disable_eos, - .parallel_poll = fmh_gpib_parallel_poll, - .parallel_poll_configure = fmh_gpib_parallel_poll_configure, - .parallel_poll_response = fmh_gpib_parallel_poll_response, - .local_parallel_poll_mode = fmh_gpib_local_parallel_poll_mode, - .line_status = fmh_gpib_line_status, - .update_status = fmh_gpib_update_status, - .primary_address = fmh_gpib_primary_address, - .secondary_address = fmh_gpib_secondary_address, - .serial_poll_response2 = fmh_gpib_serial_poll_response2, - .serial_poll_status = fmh_gpib_serial_poll_status, - .t1_delay = fmh_gpib_t1_delay, - .return_to_local = fmh_gpib_return_to_local, -}; - -static struct gpib_interface fmh_gpib_interface = { - .name = "fmh_gpib", - .attach = fmh_gpib_attach_holdoff_end, - .detach = fmh_gpib_detach, - .read = fmh_gpib_accel_read, - .write = fmh_gpib_accel_write, - .command = fmh_gpib_command, - .take_control = fmh_gpib_take_control, - .go_to_standby = fmh_gpib_go_to_standby, - .request_system_control = fmh_gpib_request_system_control, - .interface_clear = fmh_gpib_interface_clear, - .remote_enable = fmh_gpib_remote_enable, - .enable_eos = fmh_gpib_enable_eos, - .disable_eos = fmh_gpib_disable_eos, - .parallel_poll = fmh_gpib_parallel_poll, - .parallel_poll_configure = fmh_gpib_parallel_poll_configure, - .parallel_poll_response = fmh_gpib_parallel_poll_response, - .local_parallel_poll_mode = fmh_gpib_local_parallel_poll_mode, - .line_status = fmh_gpib_line_status, - .update_status = fmh_gpib_update_status, - .primary_address = fmh_gpib_primary_address, - .secondary_address = fmh_gpib_secondary_address, - .serial_poll_response2 = fmh_gpib_serial_poll_response2, - .serial_poll_status = fmh_gpib_serial_poll_status, - .t1_delay = fmh_gpib_t1_delay, - .return_to_local = fmh_gpib_return_to_local, -}; - -static struct gpib_interface fmh_gpib_pci_interface = { - .name = "fmh_gpib_pci", - .attach = fmh_gpib_pci_attach_holdoff_end, - .detach = fmh_gpib_pci_detach, - .read = fmh_gpib_fifo_read, - .write = fmh_gpib_fifo_write, - .command = fmh_gpib_command, - .take_control = fmh_gpib_take_control, - .go_to_standby = fmh_gpib_go_to_standby, - .request_system_control = fmh_gpib_request_system_control, - .interface_clear = fmh_gpib_interface_clear, - .remote_enable = fmh_gpib_remote_enable, - .enable_eos = fmh_gpib_enable_eos, - .disable_eos = fmh_gpib_disable_eos, - .parallel_poll = fmh_gpib_parallel_poll, - .parallel_poll_configure = fmh_gpib_parallel_poll_configure, - .parallel_poll_response = fmh_gpib_parallel_poll_response, - .local_parallel_poll_mode = fmh_gpib_local_parallel_poll_mode, - .line_status = fmh_gpib_line_status, - .update_status = fmh_gpib_update_status, - .primary_address = fmh_gpib_primary_address, - .secondary_address = fmh_gpib_secondary_address, - .serial_poll_response2 = fmh_gpib_serial_poll_response2, - .serial_poll_status = fmh_gpib_serial_poll_status, - .t1_delay = fmh_gpib_t1_delay, - .return_to_local = fmh_gpib_return_to_local, -}; - -static struct gpib_interface fmh_gpib_pci_unaccel_interface = { - .name = "fmh_gpib_pci_unaccel", - .attach = fmh_gpib_pci_attach_holdoff_all, - .detach = fmh_gpib_pci_detach, - .read = fmh_gpib_read, - .write = fmh_gpib_write, - .command = fmh_gpib_command, - .take_control = fmh_gpib_take_control, - .go_to_standby = fmh_gpib_go_to_standby, - .request_system_control = fmh_gpib_request_system_control, - .interface_clear = fmh_gpib_interface_clear, - .remote_enable = fmh_gpib_remote_enable, - .enable_eos = fmh_gpib_enable_eos, - .disable_eos = fmh_gpib_disable_eos, - .parallel_poll = fmh_gpib_parallel_poll, - .parallel_poll_configure = fmh_gpib_parallel_poll_configure, - .parallel_poll_response = fmh_gpib_parallel_poll_response, - .local_parallel_poll_mode = fmh_gpib_local_parallel_poll_mode, - .line_status = fmh_gpib_line_status, - .update_status = fmh_gpib_update_status, - .primary_address = fmh_gpib_primary_address, - .secondary_address = fmh_gpib_secondary_address, - .serial_poll_response2 = fmh_gpib_serial_poll_response2, - .serial_poll_status = fmh_gpib_serial_poll_status, - .t1_delay = fmh_gpib_t1_delay, - .return_to_local = fmh_gpib_return_to_local, -}; - -irqreturn_t fmh_gpib_internal_interrupt(struct gpib_board *board) -{ - unsigned int status0, status1, status2, ext_status_1, fifo_status; - struct fmh_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - int retval = IRQ_NONE; - - status0 = read_byte(nec_priv, ISR0_IMR0_REG); - status1 = read_byte(nec_priv, ISR1); - status2 = read_byte(nec_priv, ISR2); - fifo_status = fifos_read(priv, FIFO_CONTROL_STATUS_REG); - - if (status0 & IFC_INTERRUPT_BIT) { - push_gpib_event(board, EVENT_IFC); - retval = IRQ_HANDLED; - } - - if (nec7210_interrupt_have_status(board, nec_priv, status1, status2) == IRQ_HANDLED) - retval = IRQ_HANDLED; - - ext_status_1 = read_byte(nec_priv, EXT_STATUS_1_REG); - - if (ext_status_1 & DATA_IN_STATUS_BIT) - set_bit(READ_READY_BN, &nec_priv->state); - else - clear_bit(READ_READY_BN, &nec_priv->state); - - if (ext_status_1 & DATA_OUT_STATUS_BIT) - set_bit(WRITE_READY_BN, &nec_priv->state); - else - clear_bit(WRITE_READY_BN, &nec_priv->state); - - if (ext_status_1 & COMMAND_OUT_STATUS_BIT) - set_bit(COMMAND_READY_BN, &nec_priv->state); - else - clear_bit(COMMAND_READY_BN, &nec_priv->state); - - if (ext_status_1 & RFD_HOLDOFF_STATUS_BIT) - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - else - clear_bit(RFD_HOLDOFF_BN, &nec_priv->state); - - if (ext_status_1 & END_STATUS_BIT) { - /* - * only set RECEIVED_END while there is still a data - * byte sitting in the chip, to avoid spuriously - * setting it multiple times after it has been cleared - * during a read. - */ - if (ext_status_1 & DATA_IN_STATUS_BIT) - set_bit(RECEIVED_END_BN, &nec_priv->state); - } else { - clear_bit(RECEIVED_END_BN, &nec_priv->state); - } - - if ((fifo_status & TX_FIFO_HALF_EMPTY_INTERRUPT_IS_ENABLED) && - (fifo_status & TX_FIFO_HALF_EMPTY)) { - /* - * We really only want to clear the - * TX_FIFO_HALF_EMPTY_INTERRUPT_ENABLE bit in the - * FIFO_CONTROL_STATUS_REG. Since we are not being - * careful, this also has a side effect of disabling - * DMA requests and the RX fifo interrupt. That is - * fine though, since they should never be in use at - * the same time as the TX fifo interrupt. - */ - fifos_write(priv, 0x0, FIFO_CONTROL_STATUS_REG); - retval = IRQ_HANDLED; - } - - if ((fifo_status & RX_FIFO_HALF_FULL_INTERRUPT_IS_ENABLED) && - (fifo_status & RX_FIFO_HALF_FULL)) { - /* - * We really only want to clear the - * RX_FIFO_HALF_FULL_INTERRUPT_ENABLE bit in the - * FIFO_CONTROL_STATUS_REG. Since we are not being - * careful, this also has a side effect of disabling - * DMA requests and the TX fifo interrupt. That is - * fine though, since they should never be in use at - * the same time as the RX fifo interrupt. - */ - fifos_write(priv, 0x0, FIFO_CONTROL_STATUS_REG); - retval = IRQ_HANDLED; - } - - if (retval == IRQ_HANDLED) - wake_up_interruptible(&board->wait); - - return retval; -} - -irqreturn_t fmh_gpib_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = fmh_gpib_internal_interrupt(board); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -static int fmh_gpib_allocate_private(struct gpib_board *board) -{ - struct fmh_priv *priv; - - board->private_data = kmalloc(sizeof(struct fmh_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - priv = board->private_data; - memset(priv, 0, sizeof(struct fmh_priv)); - init_nec7210_private(&priv->nec7210_priv); - priv->dma_buffer_size = 0x800; - priv->dma_buffer = kmalloc(priv->dma_buffer_size, GFP_KERNEL); - if (!priv->dma_buffer) - return -ENOMEM; - return 0; -} - -static void fmh_gpib_generic_detach(struct gpib_board *board) -{ - if (board->private_data) { - struct fmh_priv *e_priv = board->private_data; - - kfree(e_priv->dma_buffer); - kfree(board->private_data); - board->private_data = NULL; - } - if (board->dev) - dev_set_drvdata(board->dev, NULL); -} - -// generic part of attach functions -static int fmh_gpib_generic_attach(struct gpib_board *board) -{ - struct fmh_priv *e_priv; - struct nec7210_priv *nec_priv; - int retval; - - board->status = 0; - - retval = fmh_gpib_allocate_private(board); - if (retval < 0) - return retval; - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - nec_priv->read_byte = gpib_cs_read_byte; - nec_priv->write_byte = gpib_cs_write_byte; - nec_priv->offset = 1; - nec_priv->type = CB7210; - return 0; -} - -static int fmh_gpib_config_dma(struct gpib_board *board, int output) -{ - struct fmh_priv *e_priv = board->private_data; - struct dma_slave_config config; - - config.device_fc = true; - - if (e_priv->dma_burst_length < 1) { - config.src_maxburst = 1; - config.dst_maxburst = 1; - } else { - config.src_maxburst = e_priv->dma_burst_length; - config.dst_maxburst = e_priv->dma_burst_length; - } - - config.src_addr_width = 1; - config.dst_addr_width = 1; - - if (output) { - config.direction = DMA_MEM_TO_DEV; - config.src_addr = 0; - config.dst_addr = e_priv->dma_port_res->start + FIFO_DATA_REG * fifo_reg_offset; - } else { - config.direction = DMA_DEV_TO_MEM; - config.src_addr = e_priv->dma_port_res->start + FIFO_DATA_REG * fifo_reg_offset; - config.dst_addr = 0; - } - return dmaengine_slave_config(e_priv->dma_channel, &config); -} - -static int fmh_gpib_init(struct fmh_priv *e_priv, struct gpib_board *board, int handshake_mode) -{ - struct nec7210_priv *nec_priv = &e_priv->nec7210_priv; - unsigned long flags; - unsigned int fifo_status_bits; - - fifos_write(e_priv, RX_FIFO_CLEAR | TX_FIFO_CLEAR, FIFO_CONTROL_STATUS_REG); - - nec7210_board_reset(nec_priv, board); - write_byte(nec_priv, AUX_LO_SPEED, AUXMR); - nec7210_set_handshake_mode(board, nec_priv, handshake_mode); - - /* Hueristically check if hardware supports fifo half full/empty interrupts */ - fifo_status_bits = fifos_read(e_priv, FIFO_CONTROL_STATUS_REG); - e_priv->supports_fifo_interrupts = (fifo_status_bits & TX_FIFO_EMPTY) && - (fifo_status_bits & TX_FIFO_HALF_EMPTY); - - nec7210_board_online(nec_priv, board); - - write_byte(nec_priv, IFC_INTERRUPT_ENABLE_BIT | ATN_INTERRUPT_ENABLE_BIT, ISR0_IMR0_REG); - - spin_lock_irqsave(&board->spinlock, flags); - write_byte(nec_priv, AUX_RFD_HOLDOFF_ASAP, AUXMR); - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - spin_unlock_irqrestore(&board->spinlock, flags); - return 0; -} - -/* Match callback for driver_find_device */ -static int fmh_gpib_device_match(struct device *dev, const void *data) -{ - const struct gpib_board_config *config = data; - - if (dev_get_drvdata(dev)) - return 0; - - if (gpib_match_device_path(dev, config->device_path) == 0) - return 0; - - // driver doesn't support selection by serial number - if (config->serial_number) - return 0; - - dev_dbg(dev, "matched: %s\n", of_node_full_name(dev_of_node((dev)))); - return 1; -} - -static int fmh_gpib_attach_impl(struct gpib_board *board, const struct gpib_board_config *config, - unsigned int handshake_mode, int acquire_dma) -{ - struct fmh_priv *e_priv; - struct nec7210_priv *nec_priv; - int retval; - int irq; - struct resource *res; - struct platform_device *pdev; - - board->dev = driver_find_device(&fmh_gpib_platform_driver.driver, - NULL, (const void *)config, &fmh_gpib_device_match); - if (!board->dev) { - dev_err(board->gpib_dev, "No matching fmh_gpib_core device was found, attach failed."); - return -ENODEV; - } - // currently only used to mark the device as already attached - dev_set_drvdata(board->dev, board); - pdev = to_platform_device(board->dev); - - retval = fmh_gpib_generic_attach(board); - if (retval) - return retval; - - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gpib_control_status"); - if (!res) { - dev_err(board->dev, "Unable to locate mmio resource\n"); - return -ENODEV; - } - - if (request_mem_region(res->start, - resource_size(res), - pdev->name) == NULL) { - dev_err(board->dev, "cannot claim registers\n"); - return -ENXIO; - } - e_priv->gpib_iomem_res = res; - - nec_priv->mmiobase = ioremap(e_priv->gpib_iomem_res->start, - resource_size(e_priv->gpib_iomem_res)); - if (!nec_priv->mmiobase) { - dev_err(board->dev, "Could not map I/O memory\n"); - return -ENOMEM; - } - dev_dbg(board->dev, "iobase %pr remapped to %p\n", - e_priv->gpib_iomem_res, nec_priv->mmiobase); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dma_fifos"); - if (!res) { - dev_err(board->dev, "Unable to locate mmio resource for gpib dma port\n"); - return -ENODEV; - } - if (request_mem_region(res->start, - resource_size(res), - pdev->name) == NULL) { - dev_err(board->dev, "cannot claim registers\n"); - return -ENXIO; - } - e_priv->dma_port_res = res; - e_priv->fifo_base = ioremap(e_priv->dma_port_res->start, - resource_size(e_priv->dma_port_res)); - if (!e_priv->fifo_base) { - dev_err(board->dev, "Could not map I/O memory for fifos\n"); - return -ENOMEM; - } - dev_dbg(board->dev, "dma fifos 0x%lx remapped to %p, length=%ld\n", - (unsigned long)e_priv->dma_port_res->start, e_priv->fifo_base, - (unsigned long)resource_size(e_priv->dma_port_res)); - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return -EBUSY; - retval = request_irq(irq, fmh_gpib_interrupt, IRQF_SHARED, pdev->name, board); - if (retval) { - dev_err(board->dev, - "cannot register interrupt handler err=%d\n", - retval); - return retval; - } - e_priv->irq = irq; - - if (acquire_dma) { - e_priv->dma_channel = dma_request_slave_channel(board->dev, "rxtx"); - if (!e_priv->dma_channel) { - dev_err(board->dev, "failed to acquire dma channel \"rxtx\".\n"); - return -EIO; - } - } - /* - * in the future we might want to know the half-fifo size - * (dma_burst_length) even when not using dma, so go ahead an - * initialize it unconditionally. - */ - e_priv->dma_burst_length = fifos_read(e_priv, FIFO_MAX_BURST_LENGTH_REG) & - fifo_max_burst_length_mask; - - return fmh_gpib_init(e_priv, board, handshake_mode); -} - -int fmh_gpib_attach_holdoff_all(struct gpib_board *board, const struct gpib_board_config *config) -{ - return fmh_gpib_attach_impl(board, config, HR_HLDA, 0); -} - -int fmh_gpib_attach_holdoff_end(struct gpib_board *board, const struct gpib_board_config *config) -{ - return fmh_gpib_attach_impl(board, config, HR_HLDE, 1); -} - -void fmh_gpib_detach(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (e_priv) { - if (e_priv->dma_channel) - dma_release_channel(e_priv->dma_channel); - nec_priv = &e_priv->nec7210_priv; - - if (e_priv->irq) - free_irq(e_priv->irq, board); - if (e_priv->fifo_base) - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - if (nec_priv->mmiobase) { - write_byte(nec_priv, 0, ISR0_IMR0_REG); - nec7210_board_reset(nec_priv, board); - } - if (e_priv->fifo_base) - iounmap(e_priv->fifo_base); - if (nec_priv->mmiobase) - iounmap(nec_priv->mmiobase); - if (e_priv->dma_port_res) { - release_mem_region(e_priv->dma_port_res->start, - resource_size(e_priv->dma_port_res)); - } - if (e_priv->gpib_iomem_res) - release_mem_region(e_priv->gpib_iomem_res->start, - resource_size(e_priv->gpib_iomem_res)); - } - fmh_gpib_generic_detach(board); - - if (board->dev) { - put_device(board->dev); - board->dev = NULL; - } -} - -static int fmh_gpib_pci_attach_impl(struct gpib_board *board, - const struct gpib_board_config *config, - unsigned int handshake_mode) -{ - struct fmh_priv *e_priv; - struct nec7210_priv *nec_priv; - int retval; - struct pci_dev *pci_device; - - retval = fmh_gpib_generic_attach(board); - if (retval) - return retval; - - e_priv = board->private_data; - nec_priv = &e_priv->nec7210_priv; - - // find board - pci_device = gpib_pci_get_device(config, BOGUS_PCI_VENDOR_ID_FLUKE, - BOGUS_PCI_DEVICE_ID_FLUKE_BLADERUNNER, NULL); - if (!pci_device) { - dev_err(board->gpib_dev, "No matching fmh_gpib_core pci device was found, attach failed."); - return -ENODEV; - } - board->dev = &pci_device->dev; - - // bladerunner prototype has offset of 4 between gpib control/status registers - nec_priv->offset = 4; - - if (pci_enable_device(pci_device)) { - dev_err(board->dev, "error enabling pci device\n"); - return -EIO; - } - if (pci_request_regions(pci_device, KBUILD_MODNAME)) { - dev_err(board->dev, "pci_request_regions failed\n"); - return -EIO; - } - e_priv->gpib_iomem_res = &pci_device->resource[gpib_control_status_pci_resource_index]; - e_priv->dma_port_res = &pci_device->resource[gpib_fifo_pci_resource_index]; - - nec_priv->mmiobase = ioremap(pci_resource_start(pci_device, - gpib_control_status_pci_resource_index), - pci_resource_len(pci_device, - gpib_control_status_pci_resource_index)); - dev_dbg(board->dev, "base address for gpib control/status registers remapped to 0x%p\n", - nec_priv->mmiobase); - - if (e_priv->dma_port_res->flags & IORESOURCE_MEM) { - e_priv->fifo_base = ioremap(pci_resource_start(pci_device, - gpib_fifo_pci_resource_index), - pci_resource_len(pci_device, - gpib_fifo_pci_resource_index)); - dev_dbg(board->dev, "base address for gpib fifo registers remapped to 0x%p\n", - e_priv->fifo_base); - } else { - e_priv->fifo_base = NULL; - dev_dbg(board->dev, "hardware has no gpib fifo registers.\n"); - } - - if (pci_device->irq) { - retval = request_irq(pci_device->irq, fmh_gpib_interrupt, IRQF_SHARED, - KBUILD_MODNAME, board); - if (retval) { - dev_err(board->dev, "cannot register interrupt handler err=%d\n", retval); - return retval; - } - } - e_priv->irq = pci_device->irq; - - e_priv->dma_burst_length = fifos_read(e_priv, FIFO_MAX_BURST_LENGTH_REG) & - fifo_max_burst_length_mask; - - return fmh_gpib_init(e_priv, board, handshake_mode); -} - -int fmh_gpib_pci_attach_holdoff_all(struct gpib_board *board, - const struct gpib_board_config *config) -{ - return fmh_gpib_pci_attach_impl(board, config, HR_HLDA); -} - -int fmh_gpib_pci_attach_holdoff_end(struct gpib_board *board, - const struct gpib_board_config *config) -{ - int retval; - struct fmh_priv *e_priv; - - retval = fmh_gpib_pci_attach_impl(board, config, HR_HLDE); - e_priv = board->private_data; - if (retval == 0 && e_priv && e_priv->supports_fifo_interrupts == 0) { - dev_err(board->gpib_dev, "your fmh_gpib_core does not appear to support fifo interrupts. Try the fmh_gpib_pci_unaccel board type instead."); - return -EIO; - } - return retval; -} - -void fmh_gpib_pci_detach(struct gpib_board *board) -{ - struct fmh_priv *e_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (e_priv) { - nec_priv = &e_priv->nec7210_priv; - - if (e_priv->irq) - free_irq(e_priv->irq, board); - if (e_priv->fifo_base) - fifos_write(e_priv, 0, FIFO_CONTROL_STATUS_REG); - if (nec_priv->mmiobase) { - write_byte(nec_priv, 0, ISR0_IMR0_REG); - nec7210_board_reset(nec_priv, board); - } - if (e_priv->fifo_base) - iounmap(e_priv->fifo_base); - if (nec_priv->mmiobase) - iounmap(nec_priv->mmiobase); - if (e_priv->dma_port_res || e_priv->gpib_iomem_res) - pci_release_regions(to_pci_dev(board->dev)); - if (board->dev) - pci_dev_put(to_pci_dev(board->dev)); - } - fmh_gpib_generic_detach(board); -} - -static int fmh_gpib_platform_probe(struct platform_device *pdev) -{ - return 0; -} - -static const struct of_device_id fmh_gpib_of_match[] = { - { .compatible = "fmhess,fmh_gpib_core"}, - { {0} } -}; -MODULE_DEVICE_TABLE(of, fmh_gpib_of_match); - -static struct platform_driver fmh_gpib_platform_driver = { - .driver = { - .name = DRV_NAME, - .of_match_table = fmh_gpib_of_match, - }, - .probe = &fmh_gpib_platform_probe -}; - -static int fmh_gpib_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - return 0; -} - -static const struct pci_device_id fmh_gpib_pci_match[] = { - { BOGUS_PCI_VENDOR_ID_FLUKE, BOGUS_PCI_DEVICE_ID_FLUKE_BLADERUNNER, 0, 0, 0 }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, fmh_gpib_pci_match); - -static struct pci_driver fmh_gpib_pci_driver = { - .name = DRV_NAME, - .id_table = fmh_gpib_pci_match, - .probe = &fmh_gpib_pci_probe -}; - -static int __init fmh_gpib_init_module(void) -{ - int result; - - result = platform_driver_register(&fmh_gpib_platform_driver); - if (result) { - pr_err("platform_driver_register failed: error = %d\n", result); - return result; - } - - result = pci_register_driver(&fmh_gpib_pci_driver); - if (result) { - pr_err("pci_register_driver failed: error = %d\n", result); - goto err_pci_driver; - } - - result = gpib_register_driver(&fmh_gpib_unaccel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_unaccel; - } - - result = gpib_register_driver(&fmh_gpib_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_interface; - } - - result = gpib_register_driver(&fmh_gpib_pci_unaccel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pci_unaccel; - } - - result = gpib_register_driver(&fmh_gpib_pci_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pci; - } - - return 0; - -err_pci: - gpib_unregister_driver(&fmh_gpib_pci_unaccel_interface); -err_pci_unaccel: - gpib_unregister_driver(&fmh_gpib_interface); -err_interface: - gpib_unregister_driver(&fmh_gpib_unaccel_interface); -err_unaccel: - pci_unregister_driver(&fmh_gpib_pci_driver); -err_pci_driver: - platform_driver_unregister(&fmh_gpib_platform_driver); - - return result; -} - -static void __exit fmh_gpib_exit_module(void) -{ - gpib_unregister_driver(&fmh_gpib_pci_interface); - gpib_unregister_driver(&fmh_gpib_pci_unaccel_interface); - gpib_unregister_driver(&fmh_gpib_unaccel_interface); - gpib_unregister_driver(&fmh_gpib_interface); - - pci_unregister_driver(&fmh_gpib_pci_driver); - platform_driver_unregister(&fmh_gpib_platform_driver); -} - -module_init(fmh_gpib_init_module); -module_exit(fmh_gpib_exit_module); diff --git a/drivers/staging/gpib/fmh_gpib/fmh_gpib.h b/drivers/staging/gpib/fmh_gpib/fmh_gpib.h deleted file mode 100644 index e7602d7e1401..000000000000 --- a/drivers/staging/gpib/fmh_gpib/fmh_gpib.h +++ /dev/null @@ -1,177 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Author: Frank Mori Hess <fmh6jj@gmail.com> - * Copyright: (C) 2006, 2010, 2015 Fluke Corporation - * (C) 2017 Frank Mori Hess - ***************************************************************************/ - -#include <linux/dmaengine.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/io.h> -#include "nec7210.h" - -static const int fifo_reg_offset = 2; - -static const int gpib_control_status_pci_resource_index; -static const int gpib_fifo_pci_resource_index = 1; - -/* We don't have a real pci vendor/device id, the following will need to be - * patched to match prototype hardware. - */ -#define BOGUS_PCI_VENDOR_ID_FLUKE 0xffff -#define BOGUS_PCI_DEVICE_ID_FLUKE_BLADERUNNER 0x0 - -struct fmh_priv { - struct nec7210_priv nec7210_priv; - struct resource *gpib_iomem_res; - struct resource *write_transfer_counter_res; - struct resource *dma_port_res; - int irq; - struct dma_chan *dma_channel; - u8 *dma_buffer; - int dma_buffer_size; - int dma_burst_length; - void __iomem *fifo_base; - unsigned supports_fifo_interrupts : 1; -}; - -static inline int fmh_gpib_half_fifo_size(struct fmh_priv *priv) -{ - return priv->dma_burst_length; -} - -// registers beyond the nec7210 register set -enum fmh_gpib_regs { - EXT_STATUS_1_REG = 0x9, - STATE1_REG = 0xc, - ISR0_IMR0_REG = 0xe, - BUS_STATUS_REG = 0xf -}; - -/* IMR0 -- Interrupt Mode Register 0 */ -enum imr0_bits { - ATN_INTERRUPT_ENABLE_BIT = 0x4, - IFC_INTERRUPT_ENABLE_BIT = 0x8 -}; - -/* ISR0 -- Interrupt Status Register 0 */ -enum isr0_bits { - ATN_INTERRUPT_BIT = 0x4, - IFC_INTERRUPT_BIT = 0x8 -}; - -enum state1_bits { - SOURCE_HANDSHAKE_SIDS_BITS = 0x0, /* source idle state */ - SOURCE_HANDSHAKE_SGNS_BITS = 0x1, /* source generate state */ - SOURCE_HANDSHAKE_SDYS_BITS = 0x2, /* source delay state */ - SOURCE_HANDSHAKE_STRS_BITS = 0x5, /* source transfer state */ - SOURCE_HANDSHAKE_MASK = 0x7 -}; - -enum fmh_gpib_auxmr_bits { - AUX_I_REG = 0xe0, -}; - -enum aux_reg_i_bits { - LOCAL_PPOLL_MODE_BIT = 0x4 -}; - -enum ext_status_1_bits { - DATA_IN_STATUS_BIT = 0x01, - DATA_OUT_STATUS_BIT = 0x02, - COMMAND_OUT_STATUS_BIT = 0x04, - RFD_HOLDOFF_STATUS_BIT = 0x08, - END_STATUS_BIT = 0x10 -}; - -/* dma fifo reg and bits */ -enum dma_fifo_regs { - FIFO_DATA_REG = 0x0, - FIFO_CONTROL_STATUS_REG = 0x1, - FIFO_XFER_COUNTER_REG = 0x2, - FIFO_MAX_BURST_LENGTH_REG = 0x3 -}; - -enum fifo_data_bits { - FIFO_DATA_EOI_FLAG = 0x100 -}; - -enum fifo_control_bits { - TX_FIFO_DMA_REQUEST_ENABLE = 0x0001, - TX_FIFO_CLEAR = 0x0002, - TX_FIFO_HALF_EMPTY_INTERRUPT_ENABLE = 0x0008, - RX_FIFO_DMA_REQUEST_ENABLE = 0x0100, - RX_FIFO_CLEAR = 0x0200, - RX_FIFO_HALF_FULL_INTERRUPT_ENABLE = 0x0800 -}; - -enum fifo_status_bits { - TX_FIFO_EMPTY = 0x0001, - TX_FIFO_FULL = 0x0002, - TX_FIFO_HALF_EMPTY = 0x0004, - TX_FIFO_HALF_EMPTY_INTERRUPT_IS_ENABLED = 0x0008, - TX_FIFO_DMA_REQUEST_IS_ENABLED = 0x0010, - RX_FIFO_EMPTY = 0x0100, - RX_FIFO_FULL = 0x0200, - RX_FIFO_HALF_FULL = 0x0400, - RX_FIFO_HALF_FULL_INTERRUPT_IS_ENABLED = 0x0800, - RX_FIFO_DMA_REQUEST_IS_ENABLED = 0x1000 -}; - -static const unsigned int fifo_data_mask = 0x00ff; -static const unsigned int fifo_xfer_counter_mask = 0x0fff; -static const unsigned int fifo_max_burst_length_mask = 0x00ff; - -static inline u8 gpib_cs_read_byte(struct nec7210_priv *nec_priv, - unsigned int register_num) -{ - return readb(nec_priv->mmiobase + register_num * nec_priv->offset); -} - -static inline void gpib_cs_write_byte(struct nec7210_priv *nec_priv, u8 data, - unsigned int register_num) -{ - writeb(data, nec_priv->mmiobase + register_num * nec_priv->offset); -} - -static inline uint16_t fifos_read(struct fmh_priv *fmh_priv, int register_num) -{ - if (!fmh_priv->fifo_base) - return 0; - return readw(fmh_priv->fifo_base + register_num * fifo_reg_offset); -} - -static inline void fifos_write(struct fmh_priv *fmh_priv, uint16_t data, int register_num) -{ - if (!fmh_priv->fifo_base) - return; - writew(data, fmh_priv->fifo_base + register_num * fifo_reg_offset); -} - -enum bus_status_bits { - BSR_ATN_BIT = 0x01, - BSR_EOI_BIT = 0x02, - BSR_SRQ_BIT = 0x04, - BSR_IFC_BIT = 0x08, - BSR_REN_BIT = 0x10, - BSR_DAV_BIT = 0x20, - BSR_NRFD_BIT = 0x40, - BSR_NDAC_BIT = 0x80, -}; - -enum fmh_gpib_aux_cmds { - /* AUX_RTL2 is an auxiliary command which causes the cb7210 to assert - * (and keep asserted) the local rtl message. This is used in conjunction - * with the normal nec7210 AUX_RTL command, which - * pulses the rtl message, having the effect of clearing rtl if it was left - * asserted by AUX_RTL2. - */ - AUX_RTL2 = 0x0d, - AUX_RFD_HOLDOFF_ASAP = 0x15, - AUX_REQT = 0x18, - AUX_REQF = 0x19, - AUX_LO_SPEED = 0x40, - AUX_HI_SPEED = 0x41 -}; diff --git a/drivers/staging/gpib/gpio/Makefile b/drivers/staging/gpib/gpio/Makefile deleted file mode 100644 index 00ea52abdda7..000000000000 --- a/drivers/staging/gpib/gpio/Makefile +++ /dev/null @@ -1,4 +0,0 @@ - -obj-$(CONFIG_GPIB_GPIO) += gpib_bitbang.o - - diff --git a/drivers/staging/gpib/gpio/gpib_bitbang.c b/drivers/staging/gpib/gpio/gpib_bitbang.c deleted file mode 100644 index 374cd61355e9..000000000000 --- a/drivers/staging/gpib/gpio/gpib_bitbang.c +++ /dev/null @@ -1,1469 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/************************************************************************* - * This code has been developed at the Institute of Sensor and Actuator * - * Systems (Technical University of Vienna, Austria) to enable the GPIO * - * lines (e.g. of a raspberry pi) to function as a GPIO master device * - * * - * authors : Thomas Klima * - * Marcello Carla' * - * Dave Penkler * - * * - * copyright : (C) 2016 Thomas Klima * - * * - *************************************************************************/ - -/* - * limitations: - * works only on RPi - * cannot function as non-CIC system controller with SN7516x because - * SN75161B cannot simultaneously make ATN input with IFC and REN as - * outputs. - * not implemented: - * parallel poll - * return2local - * device support (non master operation) - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define NAME KBUILD_MODNAME - -#define ENABLE_IRQ(IRQ, TYPE) irq_set_irq_type(IRQ, TYPE) -#define DISABLE_IRQ(IRQ) irq_set_irq_type(IRQ, IRQ_TYPE_NONE) - -/* - * Debug print levels: - * 0 = load/unload info and errors that make the driver fail; - * 1 = + warnings for unforeseen events that may break the current - * operation and lead to a timeout, but do not affect the - * driver integrity (mainly unexpected interrupts); - * 2 = + trace of function calls; - * 3 = + trace of protocol codes; - * 4 = + trace of interrupt operation. - */ -#define dbg_printk(level, frm, ...) \ - do { if (debug >= (level)) \ - dev_dbg(board->gpib_dev, frm, ## __VA_ARGS__); } \ - while (0) - -#define LINVAL gpiod_get_value(DAV), \ - gpiod_get_value(NRFD), \ - gpiod_get_value(NDAC), \ - gpiod_get_value(SRQ) -#define LINFMT "DAV: %d NRFD:%d NDAC: %d SRQ: %d" - -#include "gpibP.h" -#include "gpib_state_machines.h" -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/gpio/driver.h> -#include <linux/gpio/machine.h> -#include <linux/gpio.h> -#include <linux/irq.h> - -static int sn7516x_used = 1, sn7516x; -module_param(sn7516x_used, int, 0660); - -#define PINMAP_0 "elektronomikon" -#define PINMAP_1 "gpib4pi-1.1" -#define PINMAP_2 "yoga" -static char *pin_map = PINMAP_0; -module_param(pin_map, charp, 0660); -MODULE_PARM_DESC(pin_map, " valid values: " PINMAP_0 " " PINMAP_1 " " PINMAP_2); - -/********************************************** - * Signal pairing and pin wiring between the * - * Raspberry-Pi connector and the GPIB bus * - * * - * signal pin wiring * - * GPIB Pi-gpio GPIB -> RPi * - ********************************************** - */ -enum lines_t { - D01_pin_nr = 20, /* 1 -> 38 */ - D02_pin_nr = 26, /* 2 -> 37 */ - D03_pin_nr = 16, /* 3 -> 36 */ - D04_pin_nr = 19, /* 4 -> 35 */ - D05_pin_nr = 13, /* 13 -> 33 */ - D06_pin_nr = 12, /* 14 -> 32 */ - D07_pin_nr = 6, /* 15 -> 31 */ - D08_pin_nr = 5, /* 16 -> 29 */ - EOI_pin_nr = 9, /* 5 -> 21 */ - DAV_pin_nr = 10, /* 6 -> 19 */ - NRFD_pin_nr = 24, /* 7 -> 18 */ - NDAC_pin_nr = 23, /* 8 -> 16 */ - IFC_pin_nr = 22, /* 9 -> 15 */ - SRQ_pin_nr = 11, /* 10 -> 23 */ - _ATN_pin_nr = 25, /* 11 -> 22 */ - REN_pin_nr = 27, /* 17 -> 13 */ -/* - * GROUND PINS - * 12,18,19,20,21,22,23,24 => 14,20,25,30,34,39 - */ - -/* - * These lines are used to control the external - * SN75160/161 driver chips when used. - * When not used there is reduced fan out; - * currently tested with up to 4 devices. - */ - -/* Pi GPIO RPI 75161B 75160B Description */ - PE_pin_nr = 7, /* 26 -> nc 11 Pullup Enable */ - DC_pin_nr = 8, /* 24 -> 12 nc Direction control */ - TE_pin_nr = 18, /* 12 -> 2 1 Talk Enable */ - ACT_LED_pin_nr = 4, /* 7 -> LED */ - -/* YOGA adapter uses different pinout to ease layout */ - YOGA_D03_pin_nr = 13, - YOGA_D04_pin_nr = 12, - YOGA_D05_pin_nr = 21, - YOGA_D06_pin_nr = 19, -}; - -/* - * GPIO descriptors and pins - WARNING: STRICTLY KEEP ITEMS ORDER - */ - -#define GPIB_PINS 16 -#define SN7516X_PINS 4 -#define NUM_PINS (GPIB_PINS + SN7516X_PINS) - -#define ACT_LED_ON do { \ - if (ACT_LED) \ - gpiod_direction_output(ACT_LED, 1); \ - } while (0) -#define ACT_LED_OFF do { \ - if (ACT_LED) \ - gpiod_direction_output(ACT_LED, 0); \ - } while (0) - -static struct gpio_desc *all_descriptors[GPIB_PINS + SN7516X_PINS]; - -#define D01 all_descriptors[0] -#define D02 all_descriptors[1] -#define D03 all_descriptors[2] -#define D04 all_descriptors[3] -#define D05 all_descriptors[4] -#define D06 all_descriptors[5] -#define D07 all_descriptors[6] -#define D08 all_descriptors[7] - -#define EOI all_descriptors[8] -#define NRFD all_descriptors[9] -#define IFC all_descriptors[10] -#define _ATN all_descriptors[11] -#define REN all_descriptors[12] -#define DAV all_descriptors[13] -#define NDAC all_descriptors[14] -#define SRQ all_descriptors[15] - -#define PE all_descriptors[16] -#define DC all_descriptors[17] -#define TE all_descriptors[18] -#define ACT_LED all_descriptors[19] - -/* YOGA adapter uses a global enable for the buffer chips, re-using the TE pin */ -#define YOGA_ENABLE TE - -static int gpios_vector[] = { - D01_pin_nr, - D02_pin_nr, - D03_pin_nr, - D04_pin_nr, - D05_pin_nr, - D06_pin_nr, - D07_pin_nr, - D08_pin_nr, - - EOI_pin_nr, - NRFD_pin_nr, - IFC_pin_nr, - _ATN_pin_nr, - REN_pin_nr, - DAV_pin_nr, - NDAC_pin_nr, - SRQ_pin_nr, - - PE_pin_nr, - DC_pin_nr, - TE_pin_nr, - ACT_LED_pin_nr -}; - -/* Lookup table for general GPIOs */ - -static struct gpiod_lookup_table gpib_gpio_table_1 = { - // for bcm2835/6 - .dev_id = "", // device id of board device - .table = { - GPIO_LOOKUP_IDX("GPIO_GCLK", U16_MAX, NULL, 4, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO5", U16_MAX, NULL, 5, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO6", U16_MAX, NULL, 6, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("SPI_CE1_N", U16_MAX, NULL, 7, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("SPI_CE0_N", U16_MAX, NULL, 8, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("SPI_MISO", U16_MAX, NULL, 9, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("SPI_MOSI", U16_MAX, NULL, 10, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("SPI_SCLK", U16_MAX, NULL, 11, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO12", U16_MAX, NULL, 12, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO13", U16_MAX, NULL, 13, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO16", U16_MAX, NULL, 16, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO17", U16_MAX, NULL, 17, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO18", U16_MAX, NULL, 18, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO19", U16_MAX, NULL, 19, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO20", U16_MAX, NULL, 20, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO21", U16_MAX, NULL, 21, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO22", U16_MAX, NULL, 22, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO23", U16_MAX, NULL, 23, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO24", U16_MAX, NULL, 24, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO25", U16_MAX, NULL, 25, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO26", U16_MAX, NULL, 26, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO27", U16_MAX, NULL, 27, GPIO_ACTIVE_HIGH), - { } - }, -}; - -static struct gpiod_lookup_table gpib_gpio_table_0 = { - .dev_id = "", // device id of board device - .table = { - // for bcm27xx based pis (b b+ 2b 3b 3b+ 4 5) - GPIO_LOOKUP_IDX("GPIO4", U16_MAX, NULL, 4, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO5", U16_MAX, NULL, 5, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO6", U16_MAX, NULL, 6, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO7", U16_MAX, NULL, 7, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO8", U16_MAX, NULL, 8, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO9", U16_MAX, NULL, 9, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO10", U16_MAX, NULL, 10, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO11", U16_MAX, NULL, 11, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO12", U16_MAX, NULL, 12, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO13", U16_MAX, NULL, 13, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO16", U16_MAX, NULL, 16, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO17", U16_MAX, NULL, 17, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO18", U16_MAX, NULL, 18, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO19", U16_MAX, NULL, 19, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO20", U16_MAX, NULL, 20, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO21", U16_MAX, NULL, 21, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO22", U16_MAX, NULL, 22, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO23", U16_MAX, NULL, 23, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO24", U16_MAX, NULL, 24, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO25", U16_MAX, NULL, 25, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO26", U16_MAX, NULL, 26, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("GPIO27", U16_MAX, NULL, 27, GPIO_ACTIVE_HIGH), - { } - }, -}; - -static struct gpiod_lookup_table *lookup_tables[] = { - &gpib_gpio_table_0, - &gpib_gpio_table_1, - NULL -}; - -/* struct which defines private_data for gpio driver */ - -struct bb_priv { - int irq_NRFD; - int irq_NDAC; - int irq_DAV; - int irq_SRQ; - int dav_mode; /* dav interrupt mode 0/1 -> edge/levels */ - int nrfd_mode; /* nrfd interrupt mode 0/1 -> edge/levels */ - int ndac_mode; /* nrfd interrupt mode 0/1 -> edge/levels */ - int dav_tx; /* keep trace of DAV status while sending */ - int dav_rx; /* keep trace of DAV status while receiving */ - u8 eos; /* eos character */ - short eos_flags; /* eos mode */ - short eos_check; /* eos check required in current operation ... */ - short eos_check_8; /* ... with byte comparison */ - short eos_mask_7; /* ... with 7 bit masked character */ - short int end; - int request; - int count; - int direction; - int t1_delay; - u8 *rbuf; - u8 *wbuf; - int end_flag; - int r_busy; /* 0==idle 1==busy */ - int w_busy; - int write_done; - int cmd; /* 1 = cmd write in progress */ - size_t w_cnt; - size_t length; - u8 *w_buf; - spinlock_t rw_lock; /* protect mods to rw_lock */ - int phase; - int ndac_idle; - int ndac_seq; - int nrfd_idle; - int nrfd_seq; - int dav_seq; - long all_irqs; - int dav_idle; - - enum talker_function_state talker_state; - enum listener_function_state listener_state; -}; - -static inline long usec_diff(struct timespec64 *a, struct timespec64 *b); -static void bb_buffer_print(struct gpib_board *board, unsigned char *buffer, size_t length, - int cmd, int eoi); -static void set_data_lines(u8 byte); -static u8 get_data_lines(void); -static void set_data_lines_input(void); -static void set_data_lines_output(void); -static inline int check_for_eos(struct bb_priv *priv, u8 byte); -static void set_atn(struct gpib_board *board, int atn_asserted); - -static inline void SET_DIR_WRITE(struct bb_priv *priv); -static inline void SET_DIR_READ(struct bb_priv *priv); - -#define DIR_READ 0 -#define DIR_WRITE 1 - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB helper functions for bitbanging I/O"); - -/**** global variables ****/ -static int debug; -module_param(debug, int, 0644); - -static char printable(char x) -{ - if (x < 32 || x > 126) - return ' '; - return x; -} - -/*************************************************************************** - * * - * READ * - * * - ***************************************************************************/ - -static int bb_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct bb_priv *priv = board->private_data; - unsigned long flags; - int retval = 0; - - ACT_LED_ON; - SET_DIR_READ(priv); - - dbg_printk(2, "board: %p lock %d length: %zu\n", - board, mutex_is_locked(&board->user_mutex), length); - - priv->end = 0; - priv->count = 0; - priv->rbuf = buffer; - if (length == 0) - goto read_end; - priv->request = length; - priv->eos_check = (priv->eos_flags & REOS) == 0; /* do eos check */ - priv->eos_check_8 = priv->eos_flags & BIN; /* over 8 bits */ - priv->eos_mask_7 = priv->eos & 0x7f; /* with this 7 bit eos */ - - dbg_printk(3, ".........." LINFMT "\n", LINVAL); - - spin_lock_irqsave(&priv->rw_lock, flags); - priv->dav_mode = 1; - priv->dav_rx = 1; - ENABLE_IRQ(priv->irq_DAV, IRQ_TYPE_LEVEL_LOW); - priv->end_flag = 0; - gpiod_set_value(NRFD, 1); // ready for data - priv->r_busy = 1; - priv->phase = 100; - spin_unlock_irqrestore(&priv->rw_lock, flags); - - /* wait for the interrupt routines finish their work */ - - retval = wait_event_interruptible(board->wait, - (priv->end_flag || board->status & TIMO)); - - dbg_printk(3, "awake from wait queue: %d\n", retval); - - if (retval == 0 && board->status & TIMO) { - retval = -ETIMEDOUT; - dbg_printk(1, "timeout\n"); - } else if (retval) { - retval = -ERESTARTSYS; - } - - DISABLE_IRQ(priv->irq_DAV); - spin_lock_irqsave(&priv->rw_lock, flags); - gpiod_set_value(NRFD, 0); // DIR_READ line state - priv->r_busy = 0; - spin_unlock_irqrestore(&priv->rw_lock, flags); - -read_end: - ACT_LED_OFF; - *bytes_read = priv->count; - *end = priv->end; - priv->r_busy = 0; - dbg_printk(2, "return: %d eoi|eos: %d count: %d\n\n", retval, priv->end, priv->count); - return retval; -} - -/*************************************************************************** - * * - * READ interrupt routine (DAV line) * - * * - ***************************************************************************/ - -static irqreturn_t bb_DAV_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct bb_priv *priv = board->private_data; - int val; - unsigned long flags; - - spin_lock_irqsave(&priv->rw_lock, flags); - - priv->all_irqs++; - - if (priv->dav_mode) { - ENABLE_IRQ(priv->irq_DAV, IRQ_TYPE_EDGE_BOTH); - priv->dav_mode = 0; - } - - if (priv->r_busy == 0) { - dbg_printk(1, "interrupt while idle after %d at %d\n", - priv->count, priv->phase); - priv->dav_idle++; - priv->phase = 200; - goto dav_exit; /* idle */ - } - - val = gpiod_get_value(DAV); - if (val == priv->dav_rx) { - dbg_printk(1, "out of order DAV interrupt %d/%d after %zu/%zu at %d cmd %d " - LINFMT ".\n", val, priv->dav_rx, priv->w_cnt, priv->length, - priv->phase, priv->cmd, LINVAL); - priv->dav_seq++; - } - priv->dav_rx = val; - - dbg_printk(3, "> irq: %d DAV: %d st: %4lx dir: %d busy: %d:%d\n", - irq, val, board->status, priv->direction, priv->r_busy, priv->w_busy); - - if (val == 0) { - gpiod_set_value(NRFD, 0); // not ready for data - priv->rbuf[priv->count++] = get_data_lines(); - priv->end = !gpiod_get_value(EOI); - gpiod_set_value(NDAC, 1); // data accepted - priv->end |= check_for_eos(priv, priv->rbuf[priv->count - 1]); - priv->end_flag = ((priv->count >= priv->request) || priv->end); - priv->phase = 210; - } else { - gpiod_set_value(NDAC, 0); // data not accepted - if (priv->end_flag) { - priv->r_busy = 0; - wake_up_interruptible(&board->wait); - priv->phase = 220; - } else { - gpiod_set_value(NRFD, 1); // ready for data - priv->phase = 230; - } - } - -dav_exit: - spin_unlock_irqrestore(&priv->rw_lock, flags); - dbg_printk(3, "< irq: %d count %d\n", irq, priv->count); - return IRQ_HANDLED; -} - -/*************************************************************************** - * * - * WRITE * - * * - ***************************************************************************/ - -static int bb_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - unsigned long flags; - int retval = 0; - - struct bb_priv *priv = board->private_data; - - ACT_LED_ON; - - priv->w_cnt = 0; - priv->w_buf = buffer; - dbg_printk(2, "board %p lock %d length: %zu\n", - board, mutex_is_locked(&board->user_mutex), length); - - if (debug > 1) - bb_buffer_print(board, buffer, length, priv->cmd, send_eoi); - priv->count = 0; - priv->phase = 300; - - if (length == 0) - goto write_end; - priv->end = send_eoi; - priv->length = length; - - SET_DIR_WRITE(priv); - - dbg_printk(2, "Enabling interrupts - NRFD: %d NDAC: %d\n", - gpiod_get_value(NRFD), gpiod_get_value(NDAC)); - - if (gpiod_get_value(NRFD) && gpiod_get_value(NDAC)) { /* check for listener */ - retval = -ENOTCONN; - goto write_end; - } - - spin_lock_irqsave(&priv->rw_lock, flags); - priv->w_busy = 1; /* make the interrupt routines active */ - priv->write_done = 0; - priv->nrfd_mode = 1; - priv->ndac_mode = 1; - priv->dav_tx = 1; - ENABLE_IRQ(priv->irq_NDAC, IRQ_TYPE_LEVEL_HIGH); - ENABLE_IRQ(priv->irq_NRFD, IRQ_TYPE_LEVEL_HIGH); - spin_unlock_irqrestore(&priv->rw_lock, flags); - - /* wait for the interrupt routines finish their work */ - - retval = wait_event_interruptible(board->wait, - priv->write_done || (board->status & TIMO)); - - dbg_printk(3, "awake from wait queue: %d\n", retval); - - if (retval == 0) { - if (board->status & TIMO) { - retval = -ETIMEDOUT; - dbg_printk(1, "timeout after %zu/%zu at %d " LINFMT " eoi: %d\n", - priv->w_cnt, length, priv->phase, LINVAL, send_eoi); - } else { - retval = priv->w_cnt; - } - } else { - retval = -ERESTARTSYS; - } - - DISABLE_IRQ(priv->irq_NRFD); - DISABLE_IRQ(priv->irq_NDAC); - - spin_lock_irqsave(&priv->rw_lock, flags); - priv->w_busy = 0; - gpiod_set_value(DAV, 1); // DIR_WRITE line state - gpiod_set_value(EOI, 1); // De-assert EOI (in case) - spin_unlock_irqrestore(&priv->rw_lock, flags); - -write_end: - *bytes_written = priv->w_cnt; - ACT_LED_OFF; - dbg_printk(2, "sent %zu bytes\r\n\r\n", *bytes_written); - priv->phase = 310; - return retval; -} - -/*************************************************************************** - * * - * WRITE interrupt routine (NRFD line) * - * * - ***************************************************************************/ - -static irqreturn_t bb_NRFD_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct bb_priv *priv = board->private_data; - unsigned long flags; - int nrfd; - - spin_lock_irqsave(&priv->rw_lock, flags); - - nrfd = gpiod_get_value(NRFD); - priv->all_irqs++; - - dbg_printk(3, "> irq: %d NRFD: %d NDAC: %d st: %4lx dir: %d busy: %d:%d\n", - irq, nrfd, gpiod_get_value(NDAC), board->status, priv->direction, - priv->w_busy, priv->r_busy); - - if (priv->nrfd_mode) { - ENABLE_IRQ(priv->irq_NRFD, IRQ_TYPE_EDGE_RISING); - priv->nrfd_mode = 0; - } - - if (priv->w_busy == 0) { - dbg_printk(1, "interrupt while idle after %zu/%zu at %d\n", - priv->w_cnt, priv->length, priv->phase); - priv->nrfd_idle++; - goto nrfd_exit; /* idle */ - } - if (nrfd == 0) { - dbg_printk(1, "out of order interrupt after %zu/%zu at %d cmd %d " LINFMT ".\n", - priv->w_cnt, priv->length, priv->phase, priv->cmd, LINVAL); - priv->phase = 400; - priv->nrfd_seq++; - goto nrfd_exit; - } - if (!priv->dav_tx) { - dbg_printk(1, "DAV low after %zu/%zu cmd %d " LINFMT ". No action.\n", - priv->w_cnt, priv->length, priv->cmd, LINVAL); - priv->dav_seq++; - goto nrfd_exit; - } - - if (priv->w_cnt >= priv->length) { // test for missed NDAC end of transfer - dev_err(board->gpib_dev, "Unexpected NRFD exit\n"); - priv->write_done = 1; - priv->w_busy = 0; - wake_up_interruptible(&board->wait); - goto nrfd_exit; - } - - dbg_printk(3, "sending %zu\n", priv->w_cnt); - - set_data_lines(priv->w_buf[priv->w_cnt++]); // put the data on the lines - - if (priv->w_cnt == priv->length && priv->end) { - dbg_printk(3, "Asserting EOI\n"); - gpiod_set_value(EOI, 0); // Assert EOI - } - - gpiod_set_value(DAV, 0); // Data available - priv->dav_tx = 0; - priv->phase = 410; - -nrfd_exit: - spin_unlock_irqrestore(&priv->rw_lock, flags); - - return IRQ_HANDLED; -} - -/*************************************************************************** - * * - * WRITE interrupt routine (NDAC line) * - * * - ***************************************************************************/ - -static irqreturn_t bb_NDAC_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct bb_priv *priv = board->private_data; - unsigned long flags; - int ndac; - - spin_lock_irqsave(&priv->rw_lock, flags); - - ndac = gpiod_get_value(NDAC); - priv->all_irqs++; - dbg_printk(3, "> irq: %d NRFD: %d NDAC: %d st: %4lx dir: %d busy: %d:%d\n", - irq, gpiod_get_value(NRFD), ndac, board->status, priv->direction, - priv->w_busy, priv->r_busy); - - if (priv->ndac_mode) { - ENABLE_IRQ(priv->irq_NDAC, IRQ_TYPE_EDGE_RISING); - priv->ndac_mode = 0; - } - - if (priv->w_busy == 0) { - dbg_printk(1, "interrupt while idle.\n"); - priv->ndac_idle++; - goto ndac_exit; - } - if (ndac == 0) { - dbg_printk(1, "out of order interrupt at %zu:%d.\n", priv->w_cnt, priv->phase); - priv->phase = 500; - priv->ndac_seq++; - goto ndac_exit; - } - if (priv->dav_tx) { - dbg_printk(1, "DAV high after %zu/%zu cmd %d " LINFMT ". No action.\n", - priv->w_cnt, priv->length, priv->cmd, LINVAL); - priv->dav_seq++; - goto ndac_exit; - } - - dbg_printk(3, "accepted %zu\n", priv->w_cnt - 1); - - gpiod_set_value(DAV, 1); // Data not available - priv->dav_tx = 1; - priv->phase = 510; - - if (priv->w_cnt >= priv->length) { // test for end of transfer - priv->write_done = 1; - priv->w_busy = 0; - wake_up_interruptible(&board->wait); - } - -ndac_exit: - spin_unlock_irqrestore(&priv->rw_lock, flags); - return IRQ_HANDLED; -} - -/*************************************************************************** - * * - * interrupt routine for SRQ line * - * * - ***************************************************************************/ - -static irqreturn_t bb_SRQ_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - - int val = gpiod_get_value(SRQ); - - dbg_printk(3, "> %d st: %4lx\n", val, board->status); - - if (!val) - set_bit(SRQI_NUM, &board->status); /* set_bit() is atomic */ - - wake_up_interruptible(&board->wait); - - return IRQ_HANDLED; -} - -static int bb_command(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) -{ - int ret; - struct bb_priv *priv = board->private_data; - int i; - - dbg_printk(2, "%p %p\n", buffer, board->buffer); - - /* the _ATN line has already been asserted by bb_take_control() */ - - priv->cmd = 1; - - ret = bb_write(board, buffer, length, 0, bytes_written); // no eoi - - for (i = 0; i < length; i++) { - if (buffer[i] == UNT) { - priv->talker_state = talker_idle; - } else { - if (buffer[i] == UNL) { - priv->listener_state = listener_idle; - } else { - if (buffer[i] == (MTA(board->pad))) { - priv->talker_state = talker_addressed; - priv->listener_state = listener_idle; - } else if (buffer[i] == (MLA(board->pad))) { - priv->listener_state = listener_addressed; - priv->talker_state = talker_idle; - } - } - } - } - - /* the _ATN line will be released by bb_go_to_stby */ - - priv->cmd = 0; - - return ret; -} - -/*************************************************************************** - * * - * Buffer print with decode for debug/trace * - * * - ***************************************************************************/ - -static char *cmd_string[32] = { - "", // 0x00 - "GTL", // 0x01 - "", // 0x02 - "", // 0x03 - "SDC", // 0x04 - "PPC", // 0x05 - "", // 0x06 - "", // 0x07 - "GET", // 0x08 - "TCT", // 0x09 - "", // 0x0a - "", // 0x0b - "", // 0x0c - "", // 0x0d - "", // 0x0e - "", // 0x0f - "", // 0x10 - "LLO", // 0x11 - "", // 0x12 - "", // 0x13 - "DCL", // 0x14 - "PPU", // 0x15 - "", // 0x16 - "", // 0x17 - "SPE", // 0x18 - "SPD", // 0x19 - "", // 0x1a - "", // 0x1b - "", // 0x1c - "", // 0x1d - "", // 0x1e - "CFE" // 0x1f -}; - -static void bb_buffer_print(struct gpib_board *board, unsigned char *buffer, size_t length, - int cmd, int eoi) -{ - int i; - - if (cmd) { - dbg_printk(2, "<cmd len %zu>\n", length); - for (i = 0; i < length; i++) { - if (buffer[i] < 0x20) { - dbg_printk(3, "0x%x=%s\n", buffer[i], cmd_string[buffer[i]]); - } else if (buffer[i] == 0x3f) { - dbg_printk(3, "0x%x=%s\n", buffer[i], "UNL"); - } else if (buffer[i] == 0x5f) { - dbg_printk(3, "0x%x=%s\n", buffer[i], "UNT"); - } else if (buffer[i] < 0x60) { - dbg_printk(3, "0x%x=%s%d\n", buffer[i], - (buffer[i] & 0x40) ? "TLK" : "LSN", buffer[i] & 0x1F); - } else { - dbg_printk(3, "0x%x\n", buffer[i]); - } - } - } else { - dbg_printk(2, "<data len %zu %s>\n", length, (eoi) ? "w.EOI" : " "); - for (i = 0; i < length; i++) - dbg_printk(2, "%3d 0x%x->%c\n", i, buffer[i], printable(buffer[i])); - } -} - -/*************************************************************************** - * * - * STATUS Management * - * * - ***************************************************************************/ -static void set_atn(struct gpib_board *board, int atn_asserted) -{ - struct bb_priv *priv = board->private_data; - - if (priv->listener_state != listener_idle && - priv->talker_state != talker_idle) { - dev_err(board->gpib_dev, "listener/talker state machine conflict\n"); - } - if (atn_asserted) { - if (priv->listener_state == listener_active) - priv->listener_state = listener_addressed; - if (priv->talker_state == talker_active) - priv->talker_state = talker_addressed; - SET_DIR_WRITE(priv); // need to be able to read bus NRFD/NDAC - } else { - if (priv->listener_state == listener_addressed) { - priv->listener_state = listener_active; - SET_DIR_READ(priv); // make sure holdoff is active when we unassert ATN - } - if (priv->talker_state == talker_addressed) - priv->talker_state = talker_active; - } - gpiod_direction_output(_ATN, !atn_asserted); -} - -static int bb_take_control(struct gpib_board *board, int synchronous) -{ - dbg_printk(2, "%d\n", synchronous); - set_atn(board, 1); - return 0; -} - -static int bb_go_to_standby(struct gpib_board *board) -{ - dbg_printk(2, "\n"); - set_atn(board, 0); - return 0; -} - -static int bb_request_system_control(struct gpib_board *board, int request_control) -{ - struct bb_priv *priv = board->private_data; - - dbg_printk(2, "%d\n", request_control); - if (!request_control) - return -EINVAL; - - gpiod_direction_output(REN, 1); /* user space must enable REN if needed */ - gpiod_direction_output(IFC, 1); /* user space must toggle IFC if needed */ - if (sn7516x) - gpiod_direction_output(DC, 0); /* enable ATN as output on SN75161/2 */ - - gpiod_direction_input(SRQ); - - ENABLE_IRQ(priv->irq_SRQ, IRQ_TYPE_EDGE_FALLING); - - return 0; -} - -static void bb_interface_clear(struct gpib_board *board, int assert) -{ - struct bb_priv *priv = board->private_data; - - dbg_printk(2, "%d\n", assert); - if (assert) { - gpiod_direction_output(IFC, 0); - priv->talker_state = talker_idle; - priv->listener_state = listener_idle; - set_bit(CIC_NUM, &board->status); - } else { - gpiod_direction_output(IFC, 1); - } -} - -static void bb_remote_enable(struct gpib_board *board, int enable) -{ - dbg_printk(2, "%d\n", enable); - if (enable) { - set_bit(REM_NUM, &board->status); - gpiod_direction_output(REN, 0); - } else { - clear_bit(REM_NUM, &board->status); - gpiod_direction_output(REN, 1); - } -} - -static int bb_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct bb_priv *priv = board->private_data; - - dbg_printk(2, "%s\n", "EOS_en"); - priv->eos = eos_byte; - priv->eos_flags = REOS; - if (compare_8_bits) - priv->eos_flags |= BIN; - - return 0; -} - -static void bb_disable_eos(struct gpib_board *board) -{ - struct bb_priv *priv = board->private_data; - - dbg_printk(2, "\n"); - priv->eos_flags &= ~REOS; -} - -static unsigned int bb_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct bb_priv *priv = board->private_data; - - board->status &= ~clear_mask; - - if (gpiod_get_value(SRQ)) /* SRQ asserted low */ - clear_bit(SRQI_NUM, &board->status); - else - set_bit(SRQI_NUM, &board->status); - if (gpiod_get_value(_ATN)) /* ATN asserted low */ - clear_bit(ATN_NUM, &board->status); - else - set_bit(ATN_NUM, &board->status); - if (priv->talker_state == talker_active || - priv->talker_state == talker_addressed) - set_bit(TACS_NUM, &board->status); - else - clear_bit(TACS_NUM, &board->status); - - if (priv->listener_state == listener_active || - priv->listener_state == listener_addressed) - set_bit(LACS_NUM, &board->status); - else - clear_bit(LACS_NUM, &board->status); - - dbg_printk(2, "0x%lx mask 0x%x\n", board->status, clear_mask); - - return board->status; -} - -static int bb_primary_address(struct gpib_board *board, unsigned int address) -{ - dbg_printk(2, "%d\n", address); - board->pad = address; - return 0; -} - -static int bb_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - dbg_printk(2, "%d %d\n", address, enable); - if (enable) - board->sad = address; - return 0; -} - -static int bb_parallel_poll(struct gpib_board *board, u8 *result) -{ - return -ENOENT; -} - -static void bb_parallel_poll_configure(struct gpib_board *board, u8 config) -{ -} - -static void bb_parallel_poll_response(struct gpib_board *board, int ist) -{ -} - -static void bb_serial_poll_response(struct gpib_board *board, u8 status) -{ -} - -static u8 bb_serial_poll_status(struct gpib_board *board) -{ - return 0; // -ENOENT; -} - -static int bb_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct bb_priv *priv = board->private_data; - - if (nano_sec <= 350) - priv->t1_delay = 350; - else if (nano_sec <= 1100) - priv->t1_delay = 1100; - else - priv->t1_delay = 2000; - - dbg_printk(2, "t1 delay set to %d nanosec\n", priv->t1_delay); - - return priv->t1_delay; -} - -static void bb_return_to_local(struct gpib_board *board) -{ -} - -static int bb_line_status(const struct gpib_board *board) -{ - int line_status = VALID_ALL; - - if (gpiod_get_value(REN) == 0) - line_status |= BUS_REN; - if (gpiod_get_value(IFC) == 0) - line_status |= BUS_IFC; - if (gpiod_get_value(NDAC) == 0) - line_status |= BUS_NDAC; - if (gpiod_get_value(NRFD) == 0) - line_status |= BUS_NRFD; - if (gpiod_get_value(DAV) == 0) - line_status |= BUS_DAV; - if (gpiod_get_value(EOI) == 0) - line_status |= BUS_EOI; - if (gpiod_get_value(_ATN) == 0) - line_status |= BUS_ATN; - if (gpiod_get_value(SRQ) == 0) - line_status |= BUS_SRQ; - - dbg_printk(2, "status lines: %4x\n", line_status); - - return line_status; -} - -/*************************************************************************** - * * - * Module Management * - * * - ***************************************************************************/ - -static int allocate_private(struct gpib_board *board) -{ - board->private_data = kzalloc(sizeof(struct bb_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - return 0; -} - -static void free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static int bb_get_irq(struct gpib_board *board, char *name, - struct gpio_desc *gpio, int *irq, - irq_handler_t handler, irq_handler_t thread_fn, unsigned long flags) -{ - if (!gpio) - return -1; - gpiod_direction_input(gpio); - *irq = gpiod_to_irq(gpio); - dbg_printk(2, "IRQ %s: %d\n", name, *irq); - if (*irq < 0) { - dev_err(board->gpib_dev, "can't get IRQ for %s\n", name); - return -1; - } - if (request_threaded_irq(*irq, handler, thread_fn, flags, name, board)) { - dev_err(board->gpib_dev, "can't request IRQ for %s %d\n", name, *irq); - *irq = 0; - return -1; - } - DISABLE_IRQ(*irq); - return 0; -} - -static void bb_free_irq(struct gpib_board *board, int *irq, char *name) -{ - if (*irq) { - free_irq(*irq, board); - dbg_printk(2, "IRQ %d(%s) freed\n", *irq, name); - *irq = 0; - } -} - -static void release_gpios(void) -{ - int j; - - for (j = 0 ; j < NUM_PINS ; j++) { - if (all_descriptors[j]) { - gpiod_put(all_descriptors[j]); - all_descriptors[j] = NULL; - } - } -} - -static int allocate_gpios(struct gpib_board *board) -{ - int j; - int table_index = 0; - char name[256]; - struct gpio_desc *desc; - struct gpiod_lookup_table *lookup_table; - - if (!board->gpib_dev) { - pr_err("NULL gpib dev for board\n"); - return -ENOENT; - } - - lookup_table = lookup_tables[table_index]; - lookup_table->dev_id = dev_name(board->gpib_dev); - gpiod_add_lookup_table(lookup_table); - dbg_printk(1, "Allocating gpios using table index %d\n", table_index); - - for (j = 0 ; j < NUM_PINS ; j++) { - if (gpios_vector[j] < 0) - continue; - /* name not really used in gpiod_get_index() */ - sprintf(name, "GPIO%d", gpios_vector[j]); -try_again: - dbg_printk(1, "Allocating gpio %s pin no %d\n", name, gpios_vector[j]); - desc = gpiod_get_index(board->gpib_dev, name, gpios_vector[j], GPIOD_IN); - - if (IS_ERR(desc)) { - gpiod_remove_lookup_table(lookup_table); - table_index++; - lookup_table = lookup_tables[table_index]; - if (!lookup_table) { - dev_err(board->gpib_dev, "Unable to obtain gpio descriptor for pin %d error %ld\n", - gpios_vector[j], PTR_ERR(desc)); - goto alloc_gpios_fail; - } - dbg_printk(1, "Allocation failed, now using table_index %d\n", table_index); - lookup_table->dev_id = dev_name(board->gpib_dev); - gpiod_add_lookup_table(lookup_table); - goto try_again; - } - all_descriptors[j] = desc; - } - - gpiod_remove_lookup_table(lookup_table); - - return 0; - -alloc_gpios_fail: - release_gpios(); - return -1; -} - -static void bb_detach(struct gpib_board *board) -{ - struct bb_priv *priv = board->private_data; - - dbg_printk(2, "Enter with data %p\n", board->private_data); - if (!board->private_data) - return; - - bb_free_irq(board, &priv->irq_DAV, NAME "_DAV"); - bb_free_irq(board, &priv->irq_NRFD, NAME "_NRFD"); - bb_free_irq(board, &priv->irq_NDAC, NAME "_NDAC"); - bb_free_irq(board, &priv->irq_SRQ, NAME "_SRQ"); - - if (strcmp(PINMAP_2, pin_map) == 0) { /* YOGA */ - gpiod_set_value(YOGA_ENABLE, 0); - } - - release_gpios(); - - dbg_printk(2, "detached board: %d\n", board->minor); - dbg_printk(0, "NRFD: idle %d, seq %d, NDAC: idle %d, seq %d DAV: idle %d seq: %d all: %ld", - priv->nrfd_idle, priv->nrfd_seq, - priv->ndac_idle, priv->ndac_seq, - priv->dav_idle, priv->dav_seq, priv->all_irqs); - - free_private(board); -} - -static int bb_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct bb_priv *priv; - int retval = 0; - - dbg_printk(2, "%s\n", "Enter ..."); - - board->status = 0; - - if (allocate_private(board)) - return -ENOMEM; - priv = board->private_data; - priv->direction = -1; - priv->t1_delay = 2000; - priv->listener_state = listener_idle; - priv->talker_state = talker_idle; - - sn7516x = sn7516x_used; - if (strcmp(PINMAP_0, pin_map) == 0) { - if (!sn7516x) { - gpios_vector[&(PE) - &all_descriptors[0]] = -1; - gpios_vector[&(DC) - &all_descriptors[0]] = -1; - gpios_vector[&(TE) - &all_descriptors[0]] = -1; - } - } else if (strcmp(PINMAP_1, pin_map) == 0) { - if (!sn7516x) { - gpios_vector[&(PE) - &all_descriptors[0]] = -1; - gpios_vector[&(DC) - &all_descriptors[0]] = -1; - gpios_vector[&(TE) - &all_descriptors[0]] = -1; - } - gpios_vector[&(REN) - &all_descriptors[0]] = 0; /* 27 -> 0 REN on GPIB pin 0 */ - } else if (strcmp(PINMAP_2, pin_map) == 0) { /* YOGA */ - sn7516x = 0; - gpios_vector[&(D03) - &all_descriptors[0]] = YOGA_D03_pin_nr; - gpios_vector[&(D04) - &all_descriptors[0]] = YOGA_D04_pin_nr; - gpios_vector[&(D05) - &all_descriptors[0]] = YOGA_D05_pin_nr; - gpios_vector[&(D06) - &all_descriptors[0]] = YOGA_D06_pin_nr; - gpios_vector[&(PE) - &all_descriptors[0]] = -1; - gpios_vector[&(DC) - &all_descriptors[0]] = -1; - } else { - dev_err(board->gpib_dev, "Unrecognized pin map %s\n", pin_map); - goto bb_attach_fail; - } - dbg_printk(0, "Using pin map \"%s\" %s\n", pin_map, (sn7516x) ? - " with SN7516x driver support" : ""); - - if (allocate_gpios(board)) - goto bb_attach_fail; - -/* - * Configure SN7516X control lines. - * drive ATN, IFC and REN as outputs only when master - * i.e. system controller. In this mode can only be the CIC - * When not master then enable device mode ATN, IFC & REN as inputs - */ - if (sn7516x) { - gpiod_direction_output(DC, 0); - gpiod_direction_output(TE, 1); - gpiod_direction_output(PE, 1); - } -/* Set main control lines to a known state */ - gpiod_direction_output(IFC, 1); - gpiod_direction_output(REN, 1); - gpiod_direction_output(_ATN, 1); - - if (strcmp(PINMAP_2, pin_map) == 0) { /* YOGA: enable level shifters */ - gpiod_direction_output(YOGA_ENABLE, 1); - } - - spin_lock_init(&priv->rw_lock); - - /* request DAV interrupt for read */ - if (bb_get_irq(board, NAME "_DAV", DAV, &priv->irq_DAV, bb_DAV_interrupt, NULL, - IRQF_TRIGGER_NONE)) - goto bb_attach_fail_r; - - /* request NRFD interrupt for write */ - if (bb_get_irq(board, NAME "_NRFD", NRFD, &priv->irq_NRFD, bb_NRFD_interrupt, NULL, - IRQF_TRIGGER_NONE)) - goto bb_attach_fail_r; - - /* request NDAC interrupt for write */ - if (bb_get_irq(board, NAME "_NDAC", NDAC, &priv->irq_NDAC, bb_NDAC_interrupt, NULL, - IRQF_TRIGGER_NONE)) - goto bb_attach_fail_r; - - /* request SRQ interrupt for Service Request */ - if (bb_get_irq(board, NAME "_SRQ", SRQ, &priv->irq_SRQ, bb_SRQ_interrupt, NULL, - IRQF_TRIGGER_NONE)) - goto bb_attach_fail_r; - - dbg_printk(0, "attached board %d\n", board->minor); - goto bb_attach_out; - -bb_attach_fail_r: - release_gpios(); -bb_attach_fail: - retval = -1; -bb_attach_out: - return retval; -} - -static struct gpib_interface bb_interface = { - .name = NAME, - .attach = bb_attach, - .detach = bb_detach, - .read = bb_read, - .write = bb_write, - .command = bb_command, - .take_control = bb_take_control, - .go_to_standby = bb_go_to_standby, - .request_system_control = bb_request_system_control, - .interface_clear = bb_interface_clear, - .remote_enable = bb_remote_enable, - .enable_eos = bb_enable_eos, - .disable_eos = bb_disable_eos, - .parallel_poll = bb_parallel_poll, - .parallel_poll_configure = bb_parallel_poll_configure, - .parallel_poll_response = bb_parallel_poll_response, - .line_status = bb_line_status, - .update_status = bb_update_status, - .primary_address = bb_primary_address, - .secondary_address = bb_secondary_address, - .serial_poll_response = bb_serial_poll_response, - .serial_poll_status = bb_serial_poll_status, - .t1_delay = bb_t1_delay, - .return_to_local = bb_return_to_local, -}; - -static int __init bb_init_module(void) -{ - int result = gpib_register_driver(&bb_interface, THIS_MODULE); - - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - return result; - } - - return 0; -} - -static void __exit bb_exit_module(void) -{ - gpib_unregister_driver(&bb_interface); -} - -module_init(bb_init_module); -module_exit(bb_exit_module); - -/*************************************************************************** - * * - * UTILITY Functions * - * * - ***************************************************************************/ -inline long usec_diff(struct timespec64 *a, struct timespec64 *b) -{ - return ((a->tv_sec - b->tv_sec) * 1000000 + - (a->tv_nsec - b->tv_nsec) / 1000); -} - -static inline int check_for_eos(struct bb_priv *priv, u8 byte) -{ - if (priv->eos_check) - return 0; - - if (priv->eos_check_8) { - if (priv->eos == byte) - return 1; - } else { - if (priv->eos_mask_7 == (byte & 0x7f)) - return 1; - } - return 0; -} - -static void set_data_lines_output(void) -{ - gpiod_direction_output(D01, 1); - gpiod_direction_output(D02, 1); - gpiod_direction_output(D03, 1); - gpiod_direction_output(D04, 1); - gpiod_direction_output(D05, 1); - gpiod_direction_output(D06, 1); - gpiod_direction_output(D07, 1); - gpiod_direction_output(D08, 1); -} - -static void set_data_lines(u8 byte) -{ - gpiod_set_value(D01, !(byte & 0x01)); - gpiod_set_value(D02, !(byte & 0x02)); - gpiod_set_value(D03, !(byte & 0x04)); - gpiod_set_value(D04, !(byte & 0x08)); - gpiod_set_value(D05, !(byte & 0x10)); - gpiod_set_value(D06, !(byte & 0x20)); - gpiod_set_value(D07, !(byte & 0x40)); - gpiod_set_value(D08, !(byte & 0x80)); -} - -static u8 get_data_lines(void) -{ - u8 ret; - - ret = gpiod_get_value(D01); - ret |= gpiod_get_value(D02) << 1; - ret |= gpiod_get_value(D03) << 2; - ret |= gpiod_get_value(D04) << 3; - ret |= gpiod_get_value(D05) << 4; - ret |= gpiod_get_value(D06) << 5; - ret |= gpiod_get_value(D07) << 6; - ret |= gpiod_get_value(D08) << 7; - return ~ret; -} - -static void set_data_lines_input(void) -{ - gpiod_direction_input(D01); - gpiod_direction_input(D02); - gpiod_direction_input(D03); - gpiod_direction_input(D04); - gpiod_direction_input(D05); - gpiod_direction_input(D06); - gpiod_direction_input(D07); - gpiod_direction_input(D08); -} - -static inline void SET_DIR_WRITE(struct bb_priv *priv) -{ - if (priv->direction == DIR_WRITE) - return; - - gpiod_direction_input(NRFD); - gpiod_direction_input(NDAC); - set_data_lines_output(); - gpiod_direction_output(DAV, 1); - gpiod_direction_output(EOI, 1); - - if (sn7516x) { - gpiod_set_value(PE, 1); /* set data lines to transmit on sn75160b */ - gpiod_set_value(TE, 1); /* set NDAC and NRFD to receive and DAV to transmit */ - } - - priv->direction = DIR_WRITE; -} - -static inline void SET_DIR_READ(struct bb_priv *priv) -{ - if (priv->direction == DIR_READ) - return; - - gpiod_direction_input(DAV); - gpiod_direction_input(EOI); - - set_data_lines_input(); - - if (sn7516x) { - gpiod_set_value(PE, 0); /* set data lines to receive on sn75160b */ - gpiod_set_value(TE, 0); /* set NDAC and NRFD to transmit and DAV to receive */ - } - - gpiod_direction_output(NRFD, 0); /* hold off the talker */ - gpiod_direction_output(NDAC, 0); /* data not accepted */ - - priv->direction = DIR_READ; -} diff --git a/drivers/staging/gpib/hp_82335/Makefile b/drivers/staging/gpib/hp_82335/Makefile deleted file mode 100644 index 305ce44ee48a..000000000000 --- a/drivers/staging/gpib/hp_82335/Makefile +++ /dev/null @@ -1,4 +0,0 @@ - -obj-$(CONFIG_GPIB_HP82335) += hp82335.o - - diff --git a/drivers/staging/gpib/hp_82335/hp82335.c b/drivers/staging/gpib/hp_82335/hp82335.c deleted file mode 100644 index d0e47ef77c87..000000000000 --- a/drivers/staging/gpib/hp_82335/hp82335.c +++ /dev/null @@ -1,371 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess * - ***************************************************************************/ - -/* - * should enable ATN interrupts (and update board->status on occurrence), - * implement recovery from bus errors (if necessary) - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "hp82335.h" -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/init.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for HP 82335 interface cards"); - -static int hp82335_attach(struct gpib_board *board, const struct gpib_board_config *config); -static void hp82335_detach(struct gpib_board *board); -static irqreturn_t hp82335_interrupt(int irq, void *arg); - -// wrappers for interface functions -static int hp82335_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_read(board, &priv->tms9914_priv, buffer, length, end, bytes_read); -} - -static int hp82335_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_write(board, &priv->tms9914_priv, buffer, length, send_eoi, bytes_written); -} - -static int hp82335_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_command(board, &priv->tms9914_priv, buffer, length, bytes_written); -} - -static int hp82335_take_control(struct gpib_board *board, int synchronous) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_take_control(board, &priv->tms9914_priv, synchronous); -} - -static int hp82335_go_to_standby(struct gpib_board *board) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_go_to_standby(board, &priv->tms9914_priv); -} - -static int hp82335_request_system_control(struct gpib_board *board, int request_control) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_request_system_control(board, &priv->tms9914_priv, request_control); -} - -static void hp82335_interface_clear(struct gpib_board *board, int assert) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_interface_clear(board, &priv->tms9914_priv, assert); -} - -static void hp82335_remote_enable(struct gpib_board *board, int enable) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_remote_enable(board, &priv->tms9914_priv, enable); -} - -static int hp82335_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_enable_eos(board, &priv->tms9914_priv, eos_byte, compare_8_bits); -} - -static void hp82335_disable_eos(struct gpib_board *board) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_disable_eos(board, &priv->tms9914_priv); -} - -static unsigned int hp82335_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_update_status(board, &priv->tms9914_priv, clear_mask); -} - -static int hp82335_primary_address(struct gpib_board *board, unsigned int address) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_primary_address(board, &priv->tms9914_priv, address); -} - -static int hp82335_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_secondary_address(board, &priv->tms9914_priv, address, enable); -} - -static int hp82335_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_parallel_poll(board, &priv->tms9914_priv, result); -} - -static void hp82335_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_parallel_poll_configure(board, &priv->tms9914_priv, config); -} - -static void hp82335_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_parallel_poll_response(board, &priv->tms9914_priv, ist); -} - -static void hp82335_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_serial_poll_response(board, &priv->tms9914_priv, status); -} - -static u8 hp82335_serial_poll_status(struct gpib_board *board) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_serial_poll_status(board, &priv->tms9914_priv); -} - -static int hp82335_line_status(const struct gpib_board *board) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_line_status(board, &priv->tms9914_priv); -} - -static int hp82335_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct hp82335_priv *priv = board->private_data; - - return tms9914_t1_delay(board, &priv->tms9914_priv, nano_sec); -} - -static void hp82335_return_to_local(struct gpib_board *board) -{ - struct hp82335_priv *priv = board->private_data; - - tms9914_return_to_local(board, &priv->tms9914_priv); -} - -static struct gpib_interface hp82335_interface = { - .name = "hp82335", - .attach = hp82335_attach, - .detach = hp82335_detach, - .read = hp82335_read, - .write = hp82335_write, - .command = hp82335_command, - .request_system_control = hp82335_request_system_control, - .take_control = hp82335_take_control, - .go_to_standby = hp82335_go_to_standby, - .interface_clear = hp82335_interface_clear, - .remote_enable = hp82335_remote_enable, - .enable_eos = hp82335_enable_eos, - .disable_eos = hp82335_disable_eos, - .parallel_poll = hp82335_parallel_poll, - .parallel_poll_configure = hp82335_parallel_poll_configure, - .parallel_poll_response = hp82335_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = hp82335_line_status, - .update_status = hp82335_update_status, - .primary_address = hp82335_primary_address, - .secondary_address = hp82335_secondary_address, - .serial_poll_response = hp82335_serial_poll_response, - .serial_poll_status = hp82335_serial_poll_status, - .t1_delay = hp82335_t1_delay, - .return_to_local = hp82335_return_to_local, -}; - -static int hp82335_allocate_private(struct gpib_board *board) -{ - board->private_data = kzalloc(sizeof(struct hp82335_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - return 0; -} - -static void hp82335_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static inline unsigned int tms9914_to_hp82335_offset(unsigned int register_num) -{ - return 0x1ff8 + register_num; -} - -static u8 hp82335_read_byte(struct tms9914_priv *priv, unsigned int register_num) -{ - return tms9914_iomem_read_byte(priv, tms9914_to_hp82335_offset(register_num)); -} - -static void hp82335_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num) -{ - tms9914_iomem_write_byte(priv, data, tms9914_to_hp82335_offset(register_num)); -} - -static void hp82335_clear_interrupt(struct hp82335_priv *hp_priv) -{ - struct tms9914_priv *tms_priv = &hp_priv->tms9914_priv; - - writeb(0, tms_priv->mmiobase + HPREG_INTR_CLEAR); -} - -static int hp82335_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct hp82335_priv *hp_priv; - struct tms9914_priv *tms_priv; - int retval; - const unsigned long upper_iomem_base = config->ibbase + hp82335_rom_size; - - board->status = 0; - - if (hp82335_allocate_private(board)) - return -ENOMEM; - hp_priv = board->private_data; - tms_priv = &hp_priv->tms9914_priv; - tms_priv->read_byte = hp82335_read_byte; - tms_priv->write_byte = hp82335_write_byte; - tms_priv->offset = 1; - - switch (config->ibbase) { - case 0xc4000: - case 0xc8000: - case 0xcc000: - case 0xd0000: - case 0xd4000: - case 0xd8000: - case 0xdc000: - case 0xe0000: - case 0xe4000: - case 0xe8000: - case 0xec000: - case 0xf0000: - case 0xf4000: - case 0xf8000: - case 0xfc000: - break; - default: - dev_err(board->gpib_dev, "invalid base io address 0x%x\n", config->ibbase); - return -EINVAL; - } - if (!request_mem_region(upper_iomem_base, hp82335_upper_iomem_size, "hp82335")) { - dev_err(board->gpib_dev, "failed to allocate io memory region 0x%lx-0x%lx\n", - upper_iomem_base, upper_iomem_base + hp82335_upper_iomem_size - 1); - return -EBUSY; - } - hp_priv->raw_iobase = upper_iomem_base; - tms_priv->mmiobase = ioremap(upper_iomem_base, hp82335_upper_iomem_size); - - retval = request_irq(config->ibirq, hp82335_interrupt, 0, DRV_NAME, board); - if (retval) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", config->ibirq); - return retval; - } - hp_priv->irq = config->ibirq; - - tms9914_board_reset(tms_priv); - - hp82335_clear_interrupt(hp_priv); - - writeb(INTR_ENABLE, tms_priv->mmiobase + HPREG_CCR); - - tms9914_online(board, tms_priv); - - return 0; -} - -static void hp82335_detach(struct gpib_board *board) -{ - struct hp82335_priv *hp_priv = board->private_data; - struct tms9914_priv *tms_priv; - - if (hp_priv) { - tms_priv = &hp_priv->tms9914_priv; - if (hp_priv->irq) - free_irq(hp_priv->irq, board); - if (tms_priv->mmiobase) { - writeb(0, tms_priv->mmiobase + HPREG_CCR); - tms9914_board_reset(tms_priv); - iounmap(tms_priv->mmiobase); - } - if (hp_priv->raw_iobase) - release_mem_region(hp_priv->raw_iobase, hp82335_upper_iomem_size); - } - hp82335_free_private(board); -} - -static int __init hp82335_init_module(void) -{ - int result = gpib_register_driver(&hp82335_interface, THIS_MODULE); - - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - return result; - } - - return 0; -} - -static void __exit hp82335_exit_module(void) -{ - gpib_unregister_driver(&hp82335_interface); -} - -module_init(hp82335_init_module); -module_exit(hp82335_exit_module); - -/* - * GPIB interrupt service routines - */ - -static irqreturn_t hp82335_interrupt(int irq, void *arg) -{ - int status1, status2; - struct gpib_board *board = arg; - struct hp82335_priv *priv = board->private_data; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - status1 = read_byte(&priv->tms9914_priv, ISR0); - status2 = read_byte(&priv->tms9914_priv, ISR1); - hp82335_clear_interrupt(priv); - retval = tms9914_interrupt_have_status(board, &priv->tms9914_priv, status1, status2); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - diff --git a/drivers/staging/gpib/hp_82335/hp82335.h b/drivers/staging/gpib/hp_82335/hp82335.h deleted file mode 100644 index 0c252a712ec9..000000000000 --- a/drivers/staging/gpib/hp_82335/hp82335.h +++ /dev/null @@ -1,52 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess * - ***************************************************************************/ - -#ifndef _HP82335_H -#define _HP82335_H - -#include "tms9914.h" -#include "gpibP.h" - -// struct which defines private_data for board -struct hp82335_priv { - struct tms9914_priv tms9914_priv; - unsigned int irq; - unsigned long raw_iobase; -}; - -// size of io memory region used -static const int hp82335_rom_size = 0x2000; -static const int hp82335_upper_iomem_size = 0x2000; - -// hp82335 register offsets -enum hp_read_regs { - HPREG_CSR = 0x17f8, - HPREG_STATUS = 0x1ffc, -}; - -enum hp_write_regs { - HPREG_INTR_CLEAR = 0x17f7, - HPREG_CCR = HPREG_CSR, -}; - -enum ccr_bits { - DMA_ENABLE = (1 << 0), /* DMA enable */ - DMA_CHAN_SELECT = (1 << 1), /* DMA channel select O=3,1=2 */ - INTR_ENABLE = (1 << 2), /* interrupt enable */ - SYS_DISABLE = (1 << 3), /* system controller disable */ -}; - -enum csr_bits { - SWITCH6 = (1 << 0), /* switch 6 position */ - SWITCH5 = (1 << 1), /* switch 5 position */ - SYS_CONTROLLER = (1 << 2), /* system controller bit */ - DMA_ENABLE_STATUS = (1 << 4), /* DMA enabled */ - DMA_CHAN_STATUS = (1 << 5), /* DMA channel 0=3,1=2 */ - INTR_ENABLE_STATUS = (1 << 6), /* Interrupt enable */ - INTR_PENDING = (1 << 7), /* Interrupt Pending */ -}; - -#endif // _HP82335_H diff --git a/drivers/staging/gpib/hp_82341/Makefile b/drivers/staging/gpib/hp_82341/Makefile deleted file mode 100644 index 21367310a17e..000000000000 --- a/drivers/staging/gpib/hp_82341/Makefile +++ /dev/null @@ -1,2 +0,0 @@ - -obj-$(CONFIG_GPIB_HP82341) += hp_82341.o diff --git a/drivers/staging/gpib/hp_82341/hp_82341.c b/drivers/staging/gpib/hp_82341/hp_82341.c deleted file mode 100644 index 1a2ad0560e14..000000000000 --- a/drivers/staging/gpib/hp_82341/hp_82341.c +++ /dev/null @@ -1,907 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * Driver for hp 82341a/b/c/d boards. * - * Might be worth merging with Agilent 82350b driver. * - * copyright : (C) 2002, 2005 by Frank Mori Hess * - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "hp_82341.h" -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/isapnp.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for hp 82341a/b/c/d boards"); - -static unsigned short read_and_clear_event_status(struct gpib_board *board); -static void set_transfer_counter(struct hp_82341_priv *hp_priv, int count); -static int read_transfer_counter(struct hp_82341_priv *hp_priv); -static int hp_82341_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written); -static irqreturn_t hp_82341_interrupt(int irq, void *arg); - -static int hp_82341_accel_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct hp_82341_priv *hp_priv = board->private_data; - struct tms9914_priv *tms_priv = &hp_priv->tms9914_priv; - int retval = 0; - unsigned short event_status; - int i; - int num_fifo_bytes; - // hardware doesn't support checking for end-of-string character when using fifo - if (tms_priv->eos_flags & REOS) - return tms9914_read(board, tms_priv, buffer, length, end, bytes_read); - - clear_bit(DEV_CLEAR_BN, &tms_priv->state); - - read_and_clear_event_status(board); - *end = 0; - *bytes_read = 0; - if (length == 0) - return 0; - // disable fifo for the moment - outb(DIRECTION_GPIB_TO_HOST_BIT, hp_priv->iobase[3] + BUFFER_CONTROL_REG); - /* - * Handle corner case of board not in holdoff and one byte has slipped in already. - * Also, board sometimes has problems (spurious 1 byte reads) when read fifo is - * started up with board in TACS under certain data holdoff conditions. - * Doing a 1 byte tms9914-style read avoids these problems. - */ - if (/*tms_priv->holdoff_active == 0 && */length > 1) { - size_t num_bytes; - - retval = tms9914_read(board, tms_priv, buffer, 1, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - dev_err(board->gpib_dev, "tms9914_read failed retval=%i\n", retval); - if (retval < 0 || *end) - return retval; - ++buffer; - --length; - } - tms9914_set_holdoff_mode(tms_priv, TMS9914_HOLDOFF_EOI); - tms9914_release_holdoff(tms_priv); - outb(0x00, hp_priv->iobase[3] + BUFFER_FLUSH_REG); - i = 0; - num_fifo_bytes = length - 1; - while (i < num_fifo_bytes && *end == 0) { - int block_size; - int j; - int count; - - block_size = min(num_fifo_bytes - i, hp_82341_fifo_size); - set_transfer_counter(hp_priv, block_size); - outb(ENABLE_TI_BUFFER_BIT | DIRECTION_GPIB_TO_HOST_BIT, hp_priv->iobase[3] + - BUFFER_CONTROL_REG); - if (inb(hp_priv->iobase[0] + STREAM_STATUS_REG) & HALTED_STATUS_BIT) - outb(RESTART_STREAM_BIT, hp_priv->iobase[0] + STREAM_STATUS_REG); - - clear_bit(READ_READY_BN, &tms_priv->state); - - retval = wait_event_interruptible(board->wait, - ((event_status = - read_and_clear_event_status(board)) & - (TERMINAL_COUNT_EVENT_BIT | - BUFFER_END_EVENT_BIT)) || - test_bit(DEV_CLEAR_BN, &tms_priv->state) || - test_bit(TIMO_NUM, &board->status)); - if (retval) { - retval = -ERESTARTSYS; - break; - } - // have to disable buffer before we can read from buffer port - outb(DIRECTION_GPIB_TO_HOST_BIT, hp_priv->iobase[3] + BUFFER_CONTROL_REG); - count = block_size - read_transfer_counter(hp_priv); - j = 0; - while (j < count && i < num_fifo_bytes) { - unsigned short data_word = inw(hp_priv->iobase[3] + BUFFER_PORT_LOW_REG); - - buffer[i++] = data_word & 0xff; - ++j; - if (j < count && i < num_fifo_bytes) { - buffer[i++] = (data_word >> 8) & 0xff; - ++j; - } - } - if (event_status & BUFFER_END_EVENT_BIT) { - clear_bit(RECEIVED_END_BN, &tms_priv->state); - - *end = 1; - tms_priv->holdoff_active = 1; - } - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &tms_priv->state)) { - retval = -EINTR; - break; - } - } - *bytes_read += i; - buffer += i; - length -= i; - if (retval < 0) - return retval; - // read last byte if we havn't received an END yet - if (*end == 0) { - size_t num_bytes; - // try to make sure we holdoff after last byte read - retval = tms9914_read(board, tms_priv, buffer, length, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - } - return 0; -} - -static int restart_write_fifo(struct gpib_board *board, struct hp_82341_priv *hp_priv) -{ - struct tms9914_priv *tms_priv = &hp_priv->tms9914_priv; - - if ((inb(hp_priv->iobase[0] + STREAM_STATUS_REG) & HALTED_STATUS_BIT) == 0) - return 0; - while (1) { - int status; - - // restart doesn't work if data holdoff is in effect - status = tms9914_line_status(board, tms_priv); - if ((status & BUS_NRFD) == 0) { - outb(RESTART_STREAM_BIT, hp_priv->iobase[0] + STREAM_STATUS_REG); - return 0; - } - if (test_bit(DEV_CLEAR_BN, &tms_priv->state)) - return -EINTR; - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (msleep_interruptible(1)) - return -EINTR; - } - return 0; -} - -static int hp_82341_accel_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - struct hp_82341_priv *hp_priv = board->private_data; - struct tms9914_priv *tms_priv = &hp_priv->tms9914_priv; - int i, j; - unsigned short event_status; - int retval = 0; - int fifo_xfer_len = length; - - *bytes_written = 0; - if (send_eoi) - --fifo_xfer_len; - - clear_bit(DEV_CLEAR_BN, &tms_priv->state); - - read_and_clear_event_status(board); - outb(0, hp_priv->iobase[3] + BUFFER_CONTROL_REG); - outb(0x00, hp_priv->iobase[3] + BUFFER_FLUSH_REG); - for (i = 0; i < fifo_xfer_len;) { - int block_size; - - block_size = min(fifo_xfer_len - i, hp_82341_fifo_size); - set_transfer_counter(hp_priv, block_size); - // load data into board's fifo - for (j = 0; j < block_size;) { - unsigned short data_word = buffer[i++]; - ++j; - if (j < block_size) { - data_word |= buffer[i++] << 8; - ++j; - } - outw(data_word, hp_priv->iobase[3] + BUFFER_PORT_LOW_REG); - } - clear_bit(WRITE_READY_BN, &tms_priv->state); - outb(ENABLE_TI_BUFFER_BIT, hp_priv->iobase[3] + BUFFER_CONTROL_REG); - retval = restart_write_fifo(board, hp_priv); - if (retval < 0) { - dev_err(board->gpib_dev, "failed to restart write stream\n"); - break; - } - retval = wait_event_interruptible(board->wait, - ((event_status = - read_and_clear_event_status(board)) & - TERMINAL_COUNT_EVENT_BIT) || - test_bit(DEV_CLEAR_BN, &tms_priv->state) || - test_bit(TIMO_NUM, &board->status)); - outb(0, hp_priv->iobase[3] + BUFFER_CONTROL_REG); - *bytes_written += block_size - read_transfer_counter(hp_priv); - if (retval) { - retval = -ERESTARTSYS; - break; - } - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &tms_priv->state)) { - retval = -EINTR; - break; - } - } - if (retval) - return retval; - if (send_eoi) { - size_t num_bytes; - - retval = hp_82341_write(board, buffer + fifo_xfer_len, 1, 1, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - return 0; -} - -static int hp_82341_attach(struct gpib_board *board, const struct gpib_board_config *config); - -static void hp_82341_detach(struct gpib_board *board); - -// wrappers for interface functions -static int hp_82341_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_read(board, &priv->tms9914_priv, buffer, length, end, bytes_read); -} - -static int hp_82341_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_write(board, &priv->tms9914_priv, buffer, length, send_eoi, bytes_written); -} - -static int hp_82341_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_command(board, &priv->tms9914_priv, buffer, length, bytes_written); -} - -static int hp_82341_take_control(struct gpib_board *board, int synchronous) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_take_control(board, &priv->tms9914_priv, synchronous); -} - -static int hp_82341_go_to_standby(struct gpib_board *board) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_go_to_standby(board, &priv->tms9914_priv); -} - -static int hp_82341_request_system_control(struct gpib_board *board, int request_control) -{ - struct hp_82341_priv *priv = board->private_data; - - if (request_control) - priv->mode_control_bits |= SYSTEM_CONTROLLER_BIT; - else - priv->mode_control_bits &= ~SYSTEM_CONTROLLER_BIT; - outb(priv->mode_control_bits, priv->iobase[0] + MODE_CONTROL_STATUS_REG); - return tms9914_request_system_control(board, &priv->tms9914_priv, request_control); -} - -static void hp_82341_interface_clear(struct gpib_board *board, int assert) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_interface_clear(board, &priv->tms9914_priv, assert); -} - -static void hp_82341_remote_enable(struct gpib_board *board, int enable) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_remote_enable(board, &priv->tms9914_priv, enable); -} - -static int hp_82341_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_enable_eos(board, &priv->tms9914_priv, eos_byte, compare_8_bits); -} - -static void hp_82341_disable_eos(struct gpib_board *board) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_disable_eos(board, &priv->tms9914_priv); -} - -static unsigned int hp_82341_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_update_status(board, &priv->tms9914_priv, clear_mask); -} - -static int hp_82341_primary_address(struct gpib_board *board, unsigned int address) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_primary_address(board, &priv->tms9914_priv, address); -} - -static int hp_82341_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_secondary_address(board, &priv->tms9914_priv, address, enable); -} - -static int hp_82341_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_parallel_poll(board, &priv->tms9914_priv, result); -} - -static void hp_82341_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_parallel_poll_configure(board, &priv->tms9914_priv, config); -} - -static void hp_82341_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_parallel_poll_response(board, &priv->tms9914_priv, ist); -} - -static void hp_82341_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_serial_poll_response(board, &priv->tms9914_priv, status); -} - -static u8 hp_82341_serial_poll_status(struct gpib_board *board) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_serial_poll_status(board, &priv->tms9914_priv); -} - -static int hp_82341_line_status(const struct gpib_board *board) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_line_status(board, &priv->tms9914_priv); -} - -static int hp_82341_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct hp_82341_priv *priv = board->private_data; - - return tms9914_t1_delay(board, &priv->tms9914_priv, nano_sec); -} - -static void hp_82341_return_to_local(struct gpib_board *board) -{ - struct hp_82341_priv *priv = board->private_data; - - tms9914_return_to_local(board, &priv->tms9914_priv); -} - -static struct gpib_interface hp_82341_unaccel_interface = { - .name = "hp_82341_unaccel", - .attach = hp_82341_attach, - .detach = hp_82341_detach, - .read = hp_82341_read, - .write = hp_82341_write, - .command = hp_82341_command, - .request_system_control = hp_82341_request_system_control, - .take_control = hp_82341_take_control, - .go_to_standby = hp_82341_go_to_standby, - .interface_clear = hp_82341_interface_clear, - .remote_enable = hp_82341_remote_enable, - .enable_eos = hp_82341_enable_eos, - .disable_eos = hp_82341_disable_eos, - .parallel_poll = hp_82341_parallel_poll, - .parallel_poll_configure = hp_82341_parallel_poll_configure, - .parallel_poll_response = hp_82341_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = hp_82341_line_status, - .update_status = hp_82341_update_status, - .primary_address = hp_82341_primary_address, - .secondary_address = hp_82341_secondary_address, - .serial_poll_response = hp_82341_serial_poll_response, - .serial_poll_status = hp_82341_serial_poll_status, - .t1_delay = hp_82341_t1_delay, - .return_to_local = hp_82341_return_to_local, -}; - -static struct gpib_interface hp_82341_interface = { - .name = "hp_82341", - .attach = hp_82341_attach, - .detach = hp_82341_detach, - .read = hp_82341_accel_read, - .write = hp_82341_accel_write, - .command = hp_82341_command, - .request_system_control = hp_82341_request_system_control, - .take_control = hp_82341_take_control, - .go_to_standby = hp_82341_go_to_standby, - .interface_clear = hp_82341_interface_clear, - .remote_enable = hp_82341_remote_enable, - .enable_eos = hp_82341_enable_eos, - .disable_eos = hp_82341_disable_eos, - .parallel_poll = hp_82341_parallel_poll, - .parallel_poll_configure = hp_82341_parallel_poll_configure, - .parallel_poll_response = hp_82341_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = hp_82341_line_status, - .update_status = hp_82341_update_status, - .primary_address = hp_82341_primary_address, - .secondary_address = hp_82341_secondary_address, - .serial_poll_response = hp_82341_serial_poll_response, - .t1_delay = hp_82341_t1_delay, - .return_to_local = hp_82341_return_to_local, -}; - -static int hp_82341_allocate_private(struct gpib_board *board) -{ - board->private_data = kzalloc(sizeof(struct hp_82341_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - return 0; -} - -static void hp_82341_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static u8 hp_82341_read_byte(struct tms9914_priv *priv, unsigned int register_num) -{ - return inb(priv->iobase + register_num); -} - -static void hp_82341_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num) -{ - outb(data, priv->iobase + register_num); -} - -static int hp_82341_find_isapnp_board(struct pnp_dev **dev) -{ - *dev = pnp_find_dev(NULL, ISAPNP_VENDOR('H', 'W', 'P'), - ISAPNP_FUNCTION(0x1411), NULL); - if (!*dev || !(*dev)->card) { - pr_err("failed to find isapnp board\n"); - return -ENODEV; - } - if (pnp_device_attach(*dev) < 0) { - pr_err("board already active, skipping\n"); - return -EBUSY; - } - if (pnp_activate_dev(*dev) < 0) { - pnp_device_detach(*dev); - pr_err("failed to activate(), aborting\n"); - return -EAGAIN; - } - if (!pnp_port_valid(*dev, 0) || !pnp_irq_valid(*dev, 0)) { - pnp_device_detach(*dev); - pr_err("invalid port or irq, aborting\n"); - return -ENOMEM; - } - return 0; -} - -static int xilinx_ready(struct hp_82341_priv *hp_priv) -{ - switch (hp_priv->hw_version) { - case HW_VERSION_82341C: - if (inb(hp_priv->iobase[0] + CONFIG_CONTROL_STATUS_REG) & XILINX_READY_BIT) - return 1; - else - return 0; - break; - case HW_VERSION_82341D: - if (isapnp_read_byte(PIO_DATA_REG) & HP_82341D_XILINX_READY_BIT) - return 1; - else - return 0; - default: - pr_err("bug! unknown hw_version\n"); - break; - } - return 0; -} - -static int xilinx_done(struct hp_82341_priv *hp_priv) -{ - switch (hp_priv->hw_version) { - case HW_VERSION_82341C: - if (inb(hp_priv->iobase[0] + CONFIG_CONTROL_STATUS_REG) & DONE_PGL_BIT) - return 1; - else - return 0; - case HW_VERSION_82341D: - if (isapnp_read_byte(PIO_DATA_REG) & HP_82341D_XILINX_DONE_BIT) - return 1; - else - return 0; - default: - pr_err("bug! unknown hw_version\n"); - break; - } - return 0; -} - -static int irq_valid(struct hp_82341_priv *hp_priv, int irq) -{ - switch (hp_priv->hw_version) { - case HW_VERSION_82341C: - switch (irq) { - case 3: - case 5: - case 7: - case 9: - case 10: - case 11: - case 12: - case 15: - return 1; - default: - pr_err("invalid irq=%i for 82341C, irq must be 3, 5, 7, 9, 10, 11, 12, or 15.\n", - irq); - return 0; - } - break; - case HW_VERSION_82341D: - return 1; - default: - pr_err("bug! unknown hw_version\n"); - break; - } - return 0; -} - -static int hp_82341_load_firmware_array(struct hp_82341_priv *hp_priv, - const unsigned char *firmware_data, - unsigned int firmware_length) -{ - int i, j; - static const int timeout = 100; - - for (i = 0; i < firmware_length; ++i) { - for (j = 0; j < timeout; ++j) { - if (need_resched()) - schedule(); - if (xilinx_ready(hp_priv)) - break; - usleep_range(10, 15); - } - if (j == timeout) { - pr_err("timed out waiting for Xilinx ready.\n"); - return -ETIMEDOUT; - } - outb(firmware_data[i], hp_priv->iobase[0] + XILINX_DATA_REG); - } - for (j = 0; j < timeout; ++j) { - if (xilinx_done(hp_priv)) - break; - if (need_resched()) - schedule(); - usleep_range(10, 15); - } - if (j == timeout) { - pr_err("timed out waiting for Xilinx done.\n"); - return -ETIMEDOUT; - } - return 0; -} - -static int hp_82341_load_firmware(struct hp_82341_priv *hp_priv, - const struct gpib_board_config *config) -{ - if (config->init_data_length == 0) { - if (xilinx_done(hp_priv)) - return 0; - pr_err("board needs be initialized with firmware upload.\n" - "\tUse the --init-data option of gpib_config.\n"); - return -EINVAL; - } - switch (hp_priv->hw_version) { - case HW_VERSION_82341C: - if (config->init_data_length != hp_82341c_firmware_length) { - pr_err("bad firmware length=%i for 82341c (expected %i).\n", - config->init_data_length, hp_82341c_firmware_length); - return -EINVAL; - } - break; - case HW_VERSION_82341D: - if (config->init_data_length != hp_82341d_firmware_length) { - pr_err("bad firmware length=%i for 82341d (expected %i).\n", - config->init_data_length, hp_82341d_firmware_length); - return -EINVAL; - } - break; - default: - pr_err("bug! unknown hw_version\n"); - break; - } - return hp_82341_load_firmware_array(hp_priv, config->init_data, config->init_data_length); -} - -static void set_xilinx_not_prog(struct hp_82341_priv *hp_priv, int assert) -{ - switch (hp_priv->hw_version) { - case HW_VERSION_82341C: - if (assert) - hp_priv->config_control_bits |= DONE_PGL_BIT; - else - hp_priv->config_control_bits &= ~DONE_PGL_BIT; - outb(hp_priv->config_control_bits, hp_priv->iobase[0] + CONFIG_CONTROL_STATUS_REG); - break; - case HW_VERSION_82341D: - if (assert) - isapnp_write_byte(PIO_DATA_REG, HP_82341D_NOT_PROG_BIT); - else - isapnp_write_byte(PIO_DATA_REG, 0x0); - break; - default: - break; - } -} - -// clear xilinx firmware -static int clear_xilinx(struct hp_82341_priv *hp_priv) -{ - set_xilinx_not_prog(hp_priv, 1); - if (msleep_interruptible(1)) - return -EINTR; - set_xilinx_not_prog(hp_priv, 0); - if (msleep_interruptible(1)) - return -EINTR; - set_xilinx_not_prog(hp_priv, 1); - if (msleep_interruptible(1)) - return -EINTR; - return 0; -} - -static int hp_82341_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct hp_82341_priv *hp_priv; - struct tms9914_priv *tms_priv; - u32 start_addr; - u32 iobase; - int irq; - int i; - int retval; - - board->status = 0; - if (hp_82341_allocate_private(board)) - return -ENOMEM; - hp_priv = board->private_data; - tms_priv = &hp_priv->tms9914_priv; - tms_priv->read_byte = hp_82341_read_byte; - tms_priv->write_byte = hp_82341_write_byte; - tms_priv->offset = 1; - - if (config->ibbase == 0) { - struct pnp_dev *dev; - int retval = hp_82341_find_isapnp_board(&dev); - - if (retval < 0) - return retval; - hp_priv->pnp_dev = dev; - iobase = pnp_port_start(dev, 0); - irq = pnp_irq(dev, 0); - hp_priv->hw_version = HW_VERSION_82341D; - hp_priv->io_region_offset = 0x8; - } else { - iobase = config->ibbase; - irq = config->ibirq; - hp_priv->hw_version = HW_VERSION_82341C; - hp_priv->io_region_offset = 0x400; - } - for (i = 0; i < hp_82341_num_io_regions; ++i) { - start_addr = iobase + i * hp_priv->io_region_offset; - if (!request_region(start_addr, hp_82341_region_iosize, DRV_NAME)) { - dev_err(board->gpib_dev, "failed to allocate io ports 0x%x-0x%x\n", - start_addr, - start_addr + hp_82341_region_iosize - 1); - return -EIO; - } - hp_priv->iobase[i] = start_addr; - } - tms_priv->iobase = hp_priv->iobase[2]; - if (hp_priv->hw_version == HW_VERSION_82341D) { - retval = isapnp_cfg_begin(hp_priv->pnp_dev->card->number, - hp_priv->pnp_dev->number); - if (retval < 0) { - dev_err(board->gpib_dev, "isapnp_cfg_begin returned error\n"); - return retval; - } - isapnp_write_byte(PIO_DIRECTION_REG, HP_82341D_XILINX_READY_BIT | - HP_82341D_XILINX_DONE_BIT); - } - retval = clear_xilinx(hp_priv); - if (retval < 0) - return retval; - retval = hp_82341_load_firmware(hp_priv, config); - if (hp_priv->hw_version == HW_VERSION_82341D) - isapnp_cfg_end(); - if (retval < 0) - return retval; - if (irq_valid(hp_priv, irq) == 0) - return -EINVAL; - if (request_irq(irq, hp_82341_interrupt, 0, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to allocate IRQ %d\n", irq); - return -EIO; - } - hp_priv->irq = irq; - hp_priv->config_control_bits &= ~IRQ_SELECT_MASK; - hp_priv->config_control_bits |= IRQ_SELECT_BITS(irq); - outb(hp_priv->config_control_bits, hp_priv->iobase[0] + CONFIG_CONTROL_STATUS_REG); - hp_priv->mode_control_bits |= ENABLE_IRQ_CONFIG_BIT; - outb(hp_priv->mode_control_bits, hp_priv->iobase[0] + MODE_CONTROL_STATUS_REG); - tms9914_board_reset(tms_priv); - outb(ENABLE_BUFFER_END_EVENT_BIT | ENABLE_TERMINAL_COUNT_EVENT_BIT | - ENABLE_TI_INTERRUPT_EVENT_BIT, hp_priv->iobase[0] + EVENT_ENABLE_REG); - outb(ENABLE_BUFFER_END_INTERRUPT_BIT | ENABLE_TERMINAL_COUNT_INTERRUPT_BIT | - ENABLE_TI_INTERRUPT_BIT, hp_priv->iobase[0] + INTERRUPT_ENABLE_REG); - // write clear event register - outb((TI_INTERRUPT_EVENT_BIT | POINTERS_EQUAL_EVENT_BIT | - BUFFER_END_EVENT_BIT | TERMINAL_COUNT_EVENT_BIT), - hp_priv->iobase[0] + EVENT_STATUS_REG); - - tms9914_online(board, tms_priv); - - return 0; -} - -static void hp_82341_detach(struct gpib_board *board) -{ - struct hp_82341_priv *hp_priv = board->private_data; - struct tms9914_priv *tms_priv; - int i; - - if (hp_priv) { - tms_priv = &hp_priv->tms9914_priv; - if (hp_priv->iobase[0]) { - outb(0, hp_priv->iobase[0] + INTERRUPT_ENABLE_REG); - if (tms_priv->iobase) - tms9914_board_reset(tms_priv); - if (hp_priv->irq) - free_irq(hp_priv->irq, board); - } - for (i = 0; i < hp_82341_num_io_regions; ++i) { - if (hp_priv->iobase[i]) - release_region(hp_priv->iobase[i], hp_82341_region_iosize); - } - if (hp_priv->pnp_dev) - pnp_device_detach(hp_priv->pnp_dev); - } - hp_82341_free_private(board); -} - -#if 0 -/* unused, will be needed when the driver is turned into a pnp_driver */ -static const struct pnp_device_id hp_82341_pnp_table[] = { - {.id = "HWP1411"}, - {.id = ""} -}; -MODULE_DEVICE_TABLE(pnp, hp_82341_pnp_table); -#endif - -static int __init hp_82341_init_module(void) -{ - int ret; - - ret = gpib_register_driver(&hp_82341_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&hp_82341_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - gpib_unregister_driver(&hp_82341_unaccel_interface); - return ret; - } - - return 0; -} - -static void __exit hp_82341_exit_module(void) -{ - gpib_unregister_driver(&hp_82341_interface); - gpib_unregister_driver(&hp_82341_unaccel_interface); -} - -module_init(hp_82341_init_module); -module_exit(hp_82341_exit_module); - -/* - * GPIB interrupt service routines - */ -static unsigned short read_and_clear_event_status(struct gpib_board *board) -{ - struct hp_82341_priv *hp_priv = board->private_data; - unsigned long flags; - unsigned short status; - - spin_lock_irqsave(&board->spinlock, flags); - status = hp_priv->event_status_bits; - hp_priv->event_status_bits = 0; - spin_unlock_irqrestore(&board->spinlock, flags); - return status; -} - -static irqreturn_t hp_82341_interrupt(int irq, void *arg) -{ - int status1, status2; - struct gpib_board *board = arg; - struct hp_82341_priv *hp_priv = board->private_data; - struct tms9914_priv *tms_priv = &hp_priv->tms9914_priv; - unsigned long flags; - irqreturn_t retval = IRQ_NONE; - int event_status; - - spin_lock_irqsave(&board->spinlock, flags); - event_status = inb(hp_priv->iobase[0] + EVENT_STATUS_REG); - if (event_status & INTERRUPT_PENDING_EVENT_BIT) - retval = IRQ_HANDLED; - // write-clear status bits - if (event_status & (TI_INTERRUPT_EVENT_BIT | POINTERS_EQUAL_EVENT_BIT | - BUFFER_END_EVENT_BIT | TERMINAL_COUNT_EVENT_BIT)) { - outb(event_status & (TI_INTERRUPT_EVENT_BIT | POINTERS_EQUAL_EVENT_BIT | - BUFFER_END_EVENT_BIT | TERMINAL_COUNT_EVENT_BIT), - hp_priv->iobase[0] + EVENT_STATUS_REG); - hp_priv->event_status_bits |= event_status; - } - if (event_status & TI_INTERRUPT_EVENT_BIT) { - status1 = read_byte(tms_priv, ISR0); - status2 = read_byte(tms_priv, ISR1); - tms9914_interrupt_have_status(board, tms_priv, status1, status2); - } - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -static int read_transfer_counter(struct hp_82341_priv *hp_priv) -{ - int lo, mid, value; - - lo = inb(hp_priv->iobase[1] + TRANSFER_COUNT_LOW_REG); - mid = inb(hp_priv->iobase[1] + TRANSFER_COUNT_MID_REG); - value = (lo & 0xff) | ((mid << 8) & 0x7f00); - value = ~(value - 1) & 0x7fff; - return value; -} - -static void set_transfer_counter(struct hp_82341_priv *hp_priv, int count) -{ - int complement = -count; - - outb(complement & 0xff, hp_priv->iobase[1] + TRANSFER_COUNT_LOW_REG); - outb((complement >> 8) & 0xff, hp_priv->iobase[1] + TRANSFER_COUNT_MID_REG); - // I don't think the hi count reg is even used, but oh well - outb((complement >> 16) & 0xf, hp_priv->iobase[1] + TRANSFER_COUNT_HIGH_REG); -} - diff --git a/drivers/staging/gpib/hp_82341/hp_82341.h b/drivers/staging/gpib/hp_82341/hp_82341.h deleted file mode 100644 index 859ef2899acb..000000000000 --- a/drivers/staging/gpib/hp_82341/hp_82341.h +++ /dev/null @@ -1,165 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002, 2005 by Frank Mori Hess * - ***************************************************************************/ - -#include "tms9914.h" -#include "gpibP.h" - -enum hp_82341_hardware_version { - HW_VERSION_UNKNOWN, - HW_VERSION_82341C, - HW_VERSION_82341D, -}; - -// struct which defines private_data for board -struct hp_82341_priv { - struct tms9914_priv tms9914_priv; - unsigned int irq; - unsigned short config_control_bits; - unsigned short mode_control_bits; - unsigned short event_status_bits; - struct pnp_dev *pnp_dev; - unsigned long iobase[4]; - unsigned long io_region_offset; - enum hp_82341_hardware_version hw_version; -}; - -static const int hp_82341_region_iosize = 0x8; -static const int hp_82341_num_io_regions = 4; -static const int hp_82341_fifo_size = 0xffe; -static const int hp_82341c_firmware_length = 5764; -static const int hp_82341d_firmware_length = 5302; - -// hp 82341 register offsets -enum hp_82341_region_0_registers { - CONFIG_CONTROL_STATUS_REG = 0x0, - MODE_CONTROL_STATUS_REG = 0x1, - MONITOR_REG = 0x2, // after initialization - XILINX_DATA_REG = 0x2, // before initialization, write only - INTERRUPT_ENABLE_REG = 0x3, - EVENT_STATUS_REG = 0x4, - EVENT_ENABLE_REG = 0x5, - STREAM_STATUS_REG = 0x7, -}; - -enum hp_82341_region_1_registers { - ID0_REG = 0x2, - ID1_REG = 0x3, - TRANSFER_COUNT_LOW_REG = 0x4, - TRANSFER_COUNT_MID_REG = 0x5, - TRANSFER_COUNT_HIGH_REG = 0x6, -}; - -enum hp_82341_region_3_registers { - BUFFER_PORT_LOW_REG = 0x0, - BUFFER_PORT_HIGH_REG = 0x1, - ID2_REG = 0x2, - ID3_REG = 0x3, - BUFFER_FLUSH_REG = 0x4, - BUFFER_CONTROL_REG = 0x7 -}; - -enum config_control_status_bits { - IRQ_SELECT_MASK = 0x7, - DMA_CONFIG_MASK = 0x18, - ENABLE_DMA_CONFIG_BIT = 0x20, - XILINX_READY_BIT = 0x40, // read only - DONE_PGL_BIT = 0x80 -}; - -static inline unsigned int IRQ_SELECT_BITS(int irq) -{ - switch (irq) { - case 3: - return 0x3; - case 5: - return 0x2; - case 7: - return 0x1; - case 9: - return 0x0; - case 10: - return 0x7; - case 11: - return 0x6; - case 12: - return 0x5; - case 15: - return 0x4; - default: - return 0x0; - } -}; - -enum mode_control_status_bits { - SLOT8_BIT = 0x1, // read only - ACTIVE_CONTROLLER_BIT = 0x2, // read only - ENABLE_DMA_BIT = 0x4, - SYSTEM_CONTROLLER_BIT = 0x8, - MONITOR_BIT = 0x10, - ENABLE_IRQ_CONFIG_BIT = 0x20, - ENABLE_TI_STREAM_BIT = 0x40 -}; - -enum monitor_bits { - MONITOR_INTERRUPT_PENDING_BIT = 0x1, // read only - MONITOR_CLEAR_HOLDOFF_BIT = 0x2, // write only - MONITOR_PPOLL_BIT = 0x4, // write clear - MONITOR_SRQ_BIT = 0x8, // write clear - MONITOR_IFC_BIT = 0x10, // write clear - MONITOR_REN_BIT = 0x20, // write clear - MONITOR_END_BIT = 0x40, // write clear - MONITOR_DAV_BIT = 0x80 // write clear -}; - -enum interrupt_enable_bits { - ENABLE_TI_INTERRUPT_BIT = 0x1, - ENABLE_POINTERS_EQUAL_INTERRUPT_BIT = 0x4, - ENABLE_BUFFER_END_INTERRUPT_BIT = 0x10, - ENABLE_TERMINAL_COUNT_INTERRUPT_BIT = 0x20, - ENABLE_DMA_TERMINAL_COUNT_INTERRUPT_BIT = 0x80, -}; - -enum event_status_bits { - TI_INTERRUPT_EVENT_BIT = 0x1, // write clear - INTERRUPT_PENDING_EVENT_BIT = 0x2, // read only - POINTERS_EQUAL_EVENT_BIT = 0x4, // write clear - BUFFER_END_EVENT_BIT = 0x10, // write clear - TERMINAL_COUNT_EVENT_BIT = 0x20, // write clear - DMA_TERMINAL_COUNT_EVENT_BIT = 0x80, // write clear -}; - -enum event_enable_bits { - ENABLE_TI_INTERRUPT_EVENT_BIT = 0x1, // write clear - ENABLE_POINTERS_EQUAL_EVENT_BIT = 0x4, // write clear - ENABLE_BUFFER_END_EVENT_BIT = 0x10, // write clear - ENABLE_TERMINAL_COUNT_EVENT_BIT = 0x20, // write clear - ENABLE_DMA_TERMINAL_COUNT_EVENT_BIT = 0x80, // write clear -}; - -enum stream_status_bits { - HALTED_STATUS_BIT = 0x1, // read - RESTART_STREAM_BIT = 0x1 // write -}; - -enum buffer_control_bits { - DIRECTION_GPIB_TO_HOST_BIT = 0x20, // transfer direction (set for gpib to host) - ENABLE_TI_BUFFER_BIT = 0x40, // enable fifo - FAST_WR_EN_BIT = 0x80, // 350 ns t1 delay? -}; - -// registers accessible through isapnp chip on 82341d -enum hp_82341d_pnp_registers { - PIO_DATA_REG = 0x20, // read/write pio data lines - PIO_DIRECTION_REG = 0x21, // set pio data line directions (set for input) -}; - -enum hp_82341d_pnp_pio_bits { - HP_82341D_XILINX_READY_BIT = 0x1, - HP_82341D_XILINX_DONE_BIT = 0x2, - // use register layout compatible with C and older versions instead of 32 contiguous ioports - HP_82341D_LEGACY_MODE_BIT = 0x4, - HP_82341D_NOT_PROG_BIT = 0x8, // clear to reinitialize xilinx -}; diff --git a/drivers/staging/gpib/include/amcc5920.h b/drivers/staging/gpib/include/amcc5920.h deleted file mode 100644 index 7a88bd282feb..000000000000 --- a/drivers/staging/gpib/include/amcc5920.h +++ /dev/null @@ -1,49 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Header for amcc5920 pci chip - * - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -// plx pci chip registers and bits -enum amcc_registers { - AMCC_INTCS_REG = 0x38, - AMCC_PASS_THRU_REG = 0x60, -}; - -enum amcc_incsr_bits { - AMCC_ADDON_INTR_ENABLE_BIT = 0x2000, - AMCC_ADDON_INTR_ACTIVE_BIT = 0x400000, - AMCC_INTR_ACTIVE_BIT = 0x800000, -}; - -static const int bits_per_region = 8; - -static inline uint32_t amcc_wait_state_bits(unsigned int region, unsigned int num_wait_states) -{ - return (num_wait_states & 0x7) << (--region * bits_per_region); -}; - -enum amcc_prefetch_bits { - PREFETCH_DISABLED = 0x0, - PREFETCH_SMALL = 0x8, - PREFETCH_MEDIUM = 0x10, - PREFETCH_LARGE = 0x18, -}; - -static inline uint32_t amcc_prefetch_bits(unsigned int region, enum amcc_prefetch_bits prefetch) -{ - return prefetch << (--region * bits_per_region); -}; - -static inline uint32_t amcc_PTADR_mode_bit(unsigned int region) -{ - return 0x80 << (--region * bits_per_region); -}; - -static inline uint32_t amcc_disable_write_fifo_bit(unsigned int region) -{ - return 0x20 << (--region * bits_per_region); -}; - diff --git a/drivers/staging/gpib/include/amccs5933.h b/drivers/staging/gpib/include/amccs5933.h deleted file mode 100644 index d7f63c795096..000000000000 --- a/drivers/staging/gpib/include/amccs5933.h +++ /dev/null @@ -1,59 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Registers and bits for amccs5933 pci chip - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -// register offsets -enum { - MBEF_REG = 0x34, // mailbux empty/full - INTCSR_REG = 0x38, // interrupt control and status - BMCSR_REG = 0x3c, // bus master control and status -}; - -// incoming mailbox 0-3 register offsets -extern inline int INCOMING_MAILBOX_REG(unsigned int mailbox) -{ - return (0x10 + 4 * mailbox); -}; - -// bit definitions - -// INTCSR bits -enum { - OUTBOX_EMPTY_INTR_BIT = 0x10, // enable outbox empty interrupt - INBOX_FULL_INTR_BIT = 0x1000, // enable inbox full interrupt - INBOX_INTR_CS_BIT = 0x20000, // read, or write clear inbox full interrupt - INTR_ASSERTED_BIT = 0x800000, // read only, interrupt asserted -}; - -// select byte 0 to 3 of incoming mailbox -extern inline int INBOX_BYTE_BITS(unsigned int byte) -{ - return (byte & 0x3) << 8; -}; - -// select incoming mailbox 0 to 3 -extern inline int INBOX_SELECT_BITS(unsigned int mailbox) -{ - return (mailbox & 0x3) << 10; -}; - -// select byte 0 to 3 of outgoing mailbox -extern inline int OUTBOX_BYTE_BITS(unsigned int byte) -{ - return (byte & 0x3); -}; - -// select outgoing mailbox 0 to 3 -extern inline int OUTBOX_SELECT_BITS(unsigned int mailbox) -{ - return (mailbox & 0x3) << 2; -}; - -// BMCSR bits -enum { - MBOX_FLAGS_RESET_BIT = 0x08000000, // resets mailbox empty/full flags -}; - diff --git a/drivers/staging/gpib/include/gpibP.h b/drivers/staging/gpib/include/gpibP.h deleted file mode 100644 index 1b27f37e0ba0..000000000000 --- a/drivers/staging/gpib/include/gpibP.h +++ /dev/null @@ -1,41 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002,2003 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_P_H -#define _GPIB_P_H - -#include <linux/types.h> - -#include "gpib_types.h" -#include "gpib_proto.h" -#include "gpib_cmd.h" -#include "gpib.h" -#include "gpib_ioctl.h" - -#include <linux/fs.h> -#include <linux/interrupt.h> -#include <linux/io.h> - -int gpib_register_driver(struct gpib_interface *interface, struct module *mod); -void gpib_unregister_driver(struct gpib_interface *interface); -struct pci_dev *gpib_pci_get_device(const struct gpib_board_config *config, unsigned int vendor_id, - unsigned int device_id, struct pci_dev *from); -struct pci_dev *gpib_pci_get_subsys(const struct gpib_board_config *config, unsigned int vendor_id, - unsigned int device_id, unsigned int ss_vendor, - unsigned int ss_device, struct pci_dev *from); -unsigned int num_gpib_events(const struct gpib_event_queue *queue); -int push_gpib_event(struct gpib_board *board, short event_type); -int pop_gpib_event(struct gpib_board *board, struct gpib_event_queue *queue, short *event_type); -int gpib_request_pseudo_irq(struct gpib_board *board, irqreturn_t (*handler)(int, void *)); -void gpib_free_pseudo_irq(struct gpib_board *board); -int gpib_match_device_path(struct device *dev, const char *device_path_in); - -extern struct gpib_board board_array[GPIB_MAX_NUM_BOARDS]; - -extern struct list_head registered_drivers; - -#endif // _GPIB_P_H - diff --git a/drivers/staging/gpib/include/gpib_cmd.h b/drivers/staging/gpib/include/gpib_cmd.h deleted file mode 100644 index 9e96a3bfa22d..000000000000 --- a/drivers/staging/gpib/include/gpib_cmd.h +++ /dev/null @@ -1,112 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#ifndef _GPIB_CMD_H -#define _GPIB_CMD_H - -#include <linux/types.h> - -/* Command byte definitions tests and functions */ - -/* mask of bits that actually matter in a command byte */ -enum { - gpib_command_mask = 0x7f, -}; - -/* Possible GPIB command messages */ - -enum cmd_byte { - GTL = 0x1, /* go to local */ - SDC = 0x4, /* selected device clear */ - PP_CONFIG = 0x5, - GET = 0x8, /* group execute trigger */ - TCT = 0x9, /* take control */ - LLO = 0x11, /* local lockout */ - DCL = 0x14, /* device clear */ - PPU = 0x15, /* parallel poll unconfigure */ - SPE = 0x18, /* serial poll enable */ - SPD = 0x19, /* serial poll disable */ - CFE = 0x1f, /* configure enable */ - LAD = 0x20, /* value to be 'ored' in to obtain listen address */ - UNL = 0x3F, /* unlisten */ - TAD = 0x40, /* value to be 'ored' in to obtain talk address */ - UNT = 0x5F, /* untalk */ - SAD = 0x60, /* my secondary address (base) */ - PPE = 0x60, /* parallel poll enable (base) */ - PPD = 0x70 /* parallel poll disable */ -}; - -/* confine address to range 0 to 30. */ -static inline unsigned int gpib_address_restrict(u32 addr) -{ - addr &= 0x1f; - if (addr == 0x1f) - addr = 0; - return addr; -} - -static inline u8 MLA(u32 addr) -{ - return gpib_address_restrict(addr) | LAD; -} - -static inline u8 MTA(u32 addr) -{ - return gpib_address_restrict(addr) | TAD; -} - -static inline u8 MSA(u32 addr) -{ - return (addr & 0x1f) | SAD; -} - -static inline s32 gpib_address_equal(u32 pad1, s32 sad1, u32 pad2, s32 sad2) -{ - if (pad1 == pad2) { - if (sad1 == sad2) - return 1; - if (sad1 < 0 && sad2 < 0) - return 1; - } - - return 0; -} - -static inline s32 is_PPE(u8 command) -{ - return (command & 0x70) == 0x60; -} - -static inline s32 is_PPD(u8 command) -{ - return (command & 0x70) == 0x70; -} - -static inline s32 in_addressed_command_group(u8 command) -{ - return (command & 0x70) == 0x0; -} - -static inline s32 in_universal_command_group(u8 command) -{ - return (command & 0x70) == 0x10; -} - -static inline s32 in_listen_address_group(u8 command) -{ - return (command & 0x60) == 0x20; -} - -static inline s32 in_talk_address_group(u8 command) -{ - return (command & 0x60) == 0x40; -} - -static inline s32 in_primary_command_group(u8 command) -{ - return in_addressed_command_group(command) || - in_universal_command_group(command) || - in_listen_address_group(command) || - in_talk_address_group(command); -} - -#endif /* _GPIB_CMD_H */ diff --git a/drivers/staging/gpib/include/gpib_pci_ids.h b/drivers/staging/gpib/include/gpib_pci_ids.h deleted file mode 100644 index 52dcab07a7d1..000000000000 --- a/drivers/staging/gpib/include/gpib_pci_ids.h +++ /dev/null @@ -1,23 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#ifndef __GPIB_PCI_IDS_H -#define __GPIB_PCI_IDS_H - -#ifndef PCI_VENDOR_ID_AMCC -#define PCI_VENDOR_ID_AMCC 0x10e8 -#endif - -#ifndef PCI_VENDOR_ID_CBOARDS -#define PCI_VENDOR_ID_CBOARDS 0x1307 -#endif - -#ifndef PCI_VENDOR_ID_QUANCOM -#define PCI_VENDOR_ID_QUANCOM 0x8008 -#endif - -#ifndef PCI_DEVICE_ID_QUANCOM_GPIB -#define PCI_DEVICE_ID_QUANCOM_GPIB 0x3302 -#endif - -#endif // __GPIB_PCI_IDS_H - diff --git a/drivers/staging/gpib/include/gpib_proto.h b/drivers/staging/gpib/include/gpib_proto.h deleted file mode 100644 index 42e736e3b7cd..000000000000 --- a/drivers/staging/gpib/include/gpib_proto.h +++ /dev/null @@ -1,49 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#ifndef GPIB_PROTO_INCLUDED -#define GPIB_PROTO_INCLUDED - -#include <linux/fs.h> - -int ibopen(struct inode *inode, struct file *filep); -int ibclose(struct inode *inode, struct file *file); -long ibioctl(struct file *filep, unsigned int cmd, unsigned long arg); -void os_start_timer(struct gpib_board *board, unsigned int usec_timeout); -void os_remove_timer(struct gpib_board *board); -void init_gpib_board(struct gpib_board *board); -static inline unsigned long usec_to_jiffies(unsigned int usec) -{ - unsigned long usec_per_jiffy = 1000000 / HZ; - - return 1 + (usec + usec_per_jiffy - 1) / usec_per_jiffy; -}; - -int serial_poll_all(struct gpib_board *board, unsigned int usec_timeout); -void init_gpib_descriptor(struct gpib_descriptor *desc); -int dvrsp(struct gpib_board *board, unsigned int pad, int sad, - unsigned int usec_timeout, u8 *result); -int ibcac(struct gpib_board *board, int sync, int fallback_to_async); -int ibcmd(struct gpib_board *board, u8 *buf, size_t length, size_t *bytes_written); -int ibgts(struct gpib_board *board); -int ibonline(struct gpib_board *board); -int iboffline(struct gpib_board *board); -int iblines(const struct gpib_board *board, short *lines); -int ibrd(struct gpib_board *board, u8 *buf, size_t length, int *end_flag, size_t *bytes_read); -int ibrpp(struct gpib_board *board, u8 *buf); -int ibrsv2(struct gpib_board *board, u8 status_byte, int new_reason_for_service); -int ibrsc(struct gpib_board *board, int request_control); -int ibsic(struct gpib_board *board, unsigned int usec_duration); -int ibsre(struct gpib_board *board, int enable); -int ibpad(struct gpib_board *board, unsigned int addr); -int ibsad(struct gpib_board *board, int addr); -int ibeos(struct gpib_board *board, int eos, int eosflags); -int ibwait(struct gpib_board *board, int wait_mask, int clear_mask, int set_mask, - int *status, unsigned long usec_timeout, struct gpib_descriptor *desc); -int ibwrt(struct gpib_board *board, u8 *buf, size_t cnt, int send_eoi, size_t *bytes_written); -int ibstatus(struct gpib_board *board); -int general_ibstatus(struct gpib_board *board, const struct gpib_status_queue *device, - int clear_mask, int set_mask, struct gpib_descriptor *desc); -int io_timed_out(struct gpib_board *board); -int ibppc(struct gpib_board *board, u8 configuration); - -#endif /* GPIB_PROTO_INCLUDED */ diff --git a/drivers/staging/gpib/include/gpib_state_machines.h b/drivers/staging/gpib/include/gpib_state_machines.h deleted file mode 100644 index 7488c00f191e..000000000000 --- a/drivers/staging/gpib/include/gpib_state_machines.h +++ /dev/null @@ -1,23 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2006 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_STATE_MACHINES_H -#define _GPIB_STATE_MACHINES_H - -enum talker_function_state { - talker_idle, - talker_addressed, - talker_active, - serial_poll_active -}; - -enum listener_function_state { - listener_idle, - listener_addressed, - listener_active -}; - -#endif // _GPIB_STATE_MACHINES_H diff --git a/drivers/staging/gpib/include/gpib_types.h b/drivers/staging/gpib/include/gpib_types.h deleted file mode 100644 index 998abb379749..000000000000 --- a/drivers/staging/gpib/include/gpib_types.h +++ /dev/null @@ -1,381 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_TYPES_H -#define _GPIB_TYPES_H - -#ifdef __KERNEL__ -#include "gpib.h" -#include <linux/atomic.h> -#include <linux/device.h> -#include <linux/mutex.h> -#include <linux/wait.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/interrupt.h> - -struct gpib_board; - -/* config parameters that are only used by driver attach functions */ -struct gpib_board_config { - /* firmware blob */ - void *init_data; - int init_data_length; - /* IO base address to use for non-pnp cards (set by core, driver should make local copy) */ - u32 ibbase; - void __iomem *mmibbase; - /* IRQ to use for non-pnp cards (set by core, driver should make local copy) */ - unsigned int ibirq; - /* dma channel to use for non-pnp cards (set by core, driver should make local copy) */ - unsigned int ibdma; - /* - * pci bus of card, useful for distinguishing multiple identical pci cards - * (negative means don't care) - */ - int pci_bus; - /* - * pci slot of card, useful for distinguishing multiple identical pci cards - * (negative means don't care) - */ - int pci_slot; - /* sysfs device path of hardware to attach */ - char *device_path; - /* serial number of hardware to attach */ - char *serial_number; -}; - -/* - * struct gpib_interface defines the interface - * between the board-specific details dealt with in the drivers - * and generic interface provided by gpib-common. - * This really should be in a different header file. - */ -struct gpib_interface { - /* name of board */ - char *name; - /* attach() initializes board and allocates resources */ - int (*attach)(struct gpib_board *board, const struct gpib_board_config *config); - /* detach() shuts down board and frees resources */ - void (*detach)(struct gpib_board *board); - /* - * read() should read at most 'length' bytes from the bus into - * 'buffer'. It should return when it fills the buffer or - * encounters an END (EOI and or EOS if appropriate). It should set 'end' - * to be nonzero if the read was terminated by an END, otherwise 'end' - * should be zero. - * Ultimately, this will be changed into or replaced by an asynchronous - * read. Zero return value for success, negative - * return indicates error. - * nbytes returns number of bytes read - */ - int (*read)(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read); - /* - * write() should write 'length' bytes from buffer to the bus. - * If the boolean value send_eoi is nonzero, then EOI should - * be sent along with the last byte. Returns number of bytes - * written or negative value on error. - */ - int (*write)(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written); - /* - * command() writes the command bytes in 'buffer' to the bus - * Returns zero on success or negative value on error. - */ - int (*command)(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written); - /* - * Take control (assert ATN). If 'asyncronous' is nonzero, take - * control asyncronously (assert ATN immediately without waiting - * for other processes to complete first). Should not return - * until board becomes controller in charge. Returns zero no success, - * nonzero on error. - */ - int (*take_control)(struct gpib_board *board, int asyncronous); - /* - * De-assert ATN. Returns zero on success, nonzer on error. - */ - int (*go_to_standby)(struct gpib_board *board); - /* request/release control of the IFC and REN lines (system controller) */ - int (*request_system_control)(struct gpib_board *board, int request_control); - /* - * Asserts or de-asserts 'interface clear' (IFC) depending on - * boolean value of 'assert' - */ - void (*interface_clear)(struct gpib_board *board, int assert); - /* - * Sends remote enable command if 'enable' is nonzero, disables remote mode - * if 'enable' is zero - */ - void (*remote_enable)(struct gpib_board *board, int enable); - /* - * enable END for reads, when byte 'eos' is received. If - * 'compare_8_bits' is nonzero, then all 8 bits are compared - * with the eos bytes. Otherwise only the 7 least significant - * bits are compared. - */ - int (*enable_eos)(struct gpib_board *board, u8 eos, int compare_8_bits); - /* disable END on eos byte (END on EOI only)*/ - void (*disable_eos)(struct gpib_board *board); - /* configure parallel poll */ - void (*parallel_poll_configure)(struct gpib_board *board, u8 configuration); - /* conduct parallel poll */ - int (*parallel_poll)(struct gpib_board *board, u8 *result); - /* set/clear ist (individual status bit) */ - void (*parallel_poll_response)(struct gpib_board *board, int ist); - /* select local parallel poll configuration mode PP2 versus remote PP1 */ - void (*local_parallel_poll_mode)(struct gpib_board *board, int local); - /* - * Returns current status of the bus lines. Should be set to - * NULL if your board does not have the ability to query the - * state of the bus lines. - */ - int (*line_status)(const struct gpib_board *board); - /* - * updates and returns the board's current status. - * The meaning of the bits are specified in gpib_user.h - * in the IBSTA section. The driver does not need to - * worry about setting the CMPL, END, TIMO, or ERR bits. - */ - unsigned int (*update_status)(struct gpib_board *board, unsigned int clear_mask); - /* - * Sets primary address 0-30 for gpib interface card. - */ - int (*primary_address)(struct gpib_board *board, unsigned int address); - /* - * Sets and enables, or disables secondary address 0-30 - * for gpib interface card. - */ - int (*secondary_address)(struct gpib_board *board, unsigned int address, - int enable); - /* - * Sets the byte the board should send in response to a serial poll. - * This function should also start or stop requests for service via - * IEEE 488.2 reqt/reqf, based on MSS (bit 6 of the status_byte). - * If the more flexible serial_poll_response2 is implemented by the - * driver, then this method should be left NULL since it will not - * be used. This method can generate spurious service requests - * which are allowed by IEEE 488.2, but not ideal. - * - * This method should implement the serial poll response method described - * by IEEE 488.2 section 11.3.3.4.3 "Allowed Coupled Control of - * STB, reqt, and reqf". - */ - void (*serial_poll_response)(struct gpib_board *board, u8 status_byte); - /* - * Sets the byte the board should send in response to a serial poll. - * This function should also request service via IEEE 488.2 reqt/reqf - * based on MSS (bit 6 of the status_byte) and new_reason_for_service. - * reqt should be set true if new_reason_for_service is true, - * and reqf should be set true if MSS is false. This function - * will never be called with MSS false and new_reason_for_service - * true simultaneously, so don't worry about that case. - * - * This method implements the serial poll response method described - * by IEEE 488.2 section 11.3.3.4.1 "Preferred Implementation". - * - * If this method is left NULL by the driver, then the user library - * function ibrsv2 will not work. - */ - void (*serial_poll_response2)(struct gpib_board *board, u8 status_byte, - int new_reason_for_service); - /* - * returns the byte the board will send in response to a serial poll. - */ - u8 (*serial_poll_status)(struct gpib_board *board); - /* adjust T1 delay */ - int (*t1_delay)(struct gpib_board *board, unsigned int nano_sec); - /* go to local mode */ - void (*return_to_local)(struct gpib_board *board); - /* board does not support 7 bit eos comparisons */ - unsigned no_7_bit_eos : 1; - /* skip check for listeners before trying to send command bytes */ - unsigned skip_check_for_command_acceptors : 1; -}; - -struct gpib_event_queue { - struct list_head event_head; - spinlock_t lock; // for access to event list - unsigned int num_events; - unsigned dropped_event : 1; -}; - -static inline void init_event_queue(struct gpib_event_queue *queue) -{ - INIT_LIST_HEAD(&queue->event_head); - queue->num_events = 0; - queue->dropped_event = 0; - spin_lock_init(&queue->lock); -} - -/* struct for supporting polling operation when irq is not available */ -struct gpib_pseudo_irq { - struct timer_list timer; - irqreturn_t (*handler)(int irq, void *arg); - struct gpib_board *board; - atomic_t active; -}; - -static inline void init_gpib_pseudo_irq(struct gpib_pseudo_irq *pseudo_irq) -{ - pseudo_irq->handler = NULL; - timer_setup(&pseudo_irq->timer, NULL, 0); - atomic_set(&pseudo_irq->active, 0); -} - -/* list so we can make a linked list of drivers */ -struct gpib_interface_list { - struct list_head list; - struct gpib_interface *interface; - struct module *module; -}; - -/* - * One struct gpib_board is allocated for each physical board in the computer. - * It provides storage for variables local to each board, and interface - * functions for performing operations on the board - */ -struct gpib_board { - /* functions used by this board */ - struct gpib_interface *interface; - /* - * Pointer to module whose use count we should increment when - * interface is in use - */ - struct module *provider_module; - /* buffer used to store read/write data for this board */ - u8 *buffer; - /* length of buffer */ - unsigned int buffer_length; - /* - * Used to hold the board's current status (see update_status() above) - */ - unsigned long status; - /* - * Driver should only sleep on this wait queue. It is special in that the - * core will wake this queue and set the TIMO bit in 'status' when the - * watchdog timer times out. - */ - wait_queue_head_t wait; - /* - * Lock that only allows one process to access this board at a time. - * Has to be first in any locking order, since it can be locked over - * multiple ioctls. - */ - struct mutex user_mutex; - /* - * Mutex which compensates for removal of "big kernel lock" from kernel. - * Should not be held for extended waits. - */ - struct mutex big_gpib_mutex; - /* pid of last process to lock the board mutex */ - pid_t locking_pid; - /* lock for setting locking pid */ - spinlock_t locking_pid_spinlock; - /* Spin lock for dealing with races with the interrupt handler */ - spinlock_t spinlock; - /* Watchdog timer to enable timeouts */ - struct timer_list timer; - /* device of attached driver if any */ - struct device *dev; - /* gpib_common device gpibN */ - struct device *gpib_dev; - /* - * 'private_data' can be used as seen fit by the driver to - * store additional variables for this board - */ - void *private_data; - /* Number of open file descriptors using this board */ - unsigned int use_count; - /* list of open devices connected to this board */ - struct list_head device_list; - /* primary address */ - unsigned int pad; - /* secondary address */ - int sad; - /* timeout for io operations, in microseconds */ - unsigned int usec_timeout; - /* board's parallel poll configuration byte */ - u8 parallel_poll_configuration; - /* t1 delay we are using */ - unsigned int t1_nano_sec; - /* Count that keeps track of whether board is up and running or not */ - unsigned int online; - /* number of processes trying to autopoll */ - int autospollers; - /* autospoll kernel thread */ - struct task_struct *autospoll_task; - /* queue for recording received trigger/clear/ifc events */ - struct gpib_event_queue event_queue; - /* minor number for this board's device file */ - int minor; - /* struct to deal with polling mode*/ - struct gpib_pseudo_irq pseudo_irq; - /* error dong autopoll */ - atomic_t stuck_srq; - struct gpib_board_config config; - /* Flag that indicates whether board is system controller of the bus */ - unsigned master : 1; - /* individual status bit */ - unsigned ist : 1; - /* - * one means local parallel poll mode ieee 488.1 PP2 (or no parallel poll PP0), - * zero means remote parallel poll configuration mode ieee 488.1 PP1 - */ - unsigned local_ppoll_mode : 1; -}; - -/* element of event queue */ -struct gpib_event { - struct list_head list; - short event_type; -}; - -/* - * Each board has a list of gpib_status_queue to keep track of all open devices - * on the bus, so we know what address to poll when we get a service request - */ -struct gpib_status_queue { - /* list_head so we can make a linked list of devices */ - struct list_head list; - unsigned int pad; /* primary gpib address */ - int sad; /* secondary gpib address (negative means disabled) */ - /* stores serial poll bytes for this device */ - struct list_head status_bytes; - unsigned int num_status_bytes; - /* number of times this address is opened */ - unsigned int reference_count; - /* flags loss of status byte error due to limit on size of queue */ - unsigned dropped_byte : 1; -}; - -struct gpib_status_byte { - struct list_head list; - u8 poll_byte; -}; - -void init_gpib_status_queue(struct gpib_status_queue *device); - -/* Used to store device-descriptor-specific information */ -struct gpib_descriptor { - unsigned int pad; /* primary gpib address */ - int sad; /* secondary gpib address (negative means disabled) */ - atomic_t io_in_progress; - unsigned is_board : 1; - unsigned autopoll_enabled : 1; -}; - -struct gpib_file_private { - atomic_t holding_mutex; - struct gpib_descriptor *descriptors[GPIB_MAX_NUM_DESCRIPTORS]; - /* locked while descriptors are being allocated/deallocated */ - struct mutex descriptors_mutex; - unsigned got_module : 1; -}; - -#endif /* __KERNEL__ */ - -#endif /* _GPIB_TYPES_H */ diff --git a/drivers/staging/gpib/include/nec7210.h b/drivers/staging/gpib/include/nec7210.h deleted file mode 100644 index 9835aa5ef4ff..000000000000 --- a/drivers/staging/gpib/include/nec7210.h +++ /dev/null @@ -1,141 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _NEC7210_H -#define _NEC7210_H - -#include "gpib_state_machines.h" -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/string.h> -#include <linux/interrupt.h> - -#include "gpib_types.h" -#include "nec7210_registers.h" - -/* struct used to provide variables local to a nec7210 chip */ -struct nec7210_priv { -#ifdef CONFIG_HAS_IOPORT - u32 iobase; -#endif - void __iomem *mmiobase; - unsigned int offset; // offset between successive nec7210 io addresses - unsigned int dma_channel; - u8 *dma_buffer; - unsigned int dma_buffer_length; // length of dma buffer - dma_addr_t dma_buffer_addr; // bus address of board->buffer for use with dma - // software copy of bits written to registers - u8 reg_bits[8]; - u8 auxa_bits; // bits written to auxiliary register A - u8 auxb_bits; // bits written to auxiliary register B - // used to keep track of board's state, bit definitions given below - unsigned long state; - // lock for chips that extend the nec7210 registers by paging in alternate regs - spinlock_t register_page_lock; - // wrappers for outb, inb, readb, or writeb - u8 (*read_byte)(struct nec7210_priv *priv, unsigned int register_number); - void (*write_byte)(struct nec7210_priv *priv, u8 byte, unsigned int register_number); - enum nec7210_chipset type; - enum talker_function_state talker_state; - enum listener_function_state listener_state; - void *private; - unsigned srq_pending : 1; -}; - -static inline void init_nec7210_private(struct nec7210_priv *priv) -{ - memset(priv, 0, sizeof(struct nec7210_priv)); - spin_lock_init(&priv->register_page_lock); -} - -// slightly shorter way to access read_byte and write_byte -static inline u8 read_byte(struct nec7210_priv *priv, unsigned int register_number) -{ - return priv->read_byte(priv, register_number); -} - -static inline void write_byte(struct nec7210_priv *priv, u8 byte, unsigned int register_number) -{ - priv->write_byte(priv, byte, register_number); -} - -// struct nec7210_priv.state bit numbers -enum { - PIO_IN_PROGRESS_BN, // pio transfer in progress - DMA_READ_IN_PROGRESS_BN, // dma read transfer in progress - DMA_WRITE_IN_PROGRESS_BN, // dma write transfer in progress - READ_READY_BN, // board has data byte available to read - WRITE_READY_BN, // board is ready to send a data byte - COMMAND_READY_BN, // board is ready to send a command byte - RECEIVED_END_BN, // received END - BUS_ERROR_BN, // output error has occurred - RFD_HOLDOFF_BN, // rfd holdoff in effect - DEV_CLEAR_BN, // device clear received - ADR_CHANGE_BN, // address state change occurred -}; - -// interface functions -int nec7210_read(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read); -int nec7210_write(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written); -int nec7210_command(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, size_t *bytes_written); -int nec7210_take_control(struct gpib_board *board, struct nec7210_priv *priv, int syncronous); -int nec7210_go_to_standby(struct gpib_board *board, struct nec7210_priv *priv); -int nec7210_request_system_control(struct gpib_board *board, - struct nec7210_priv *priv, int request_control); -void nec7210_interface_clear(struct gpib_board *board, struct nec7210_priv *priv, int assert); -void nec7210_remote_enable(struct gpib_board *board, struct nec7210_priv *priv, int enable); -int nec7210_enable_eos(struct gpib_board *board, struct nec7210_priv *priv, u8 eos_bytes, - int compare_8_bits); -void nec7210_disable_eos(struct gpib_board *board, struct nec7210_priv *priv); -unsigned int nec7210_update_status(struct gpib_board *board, struct nec7210_priv *priv, - unsigned int clear_mask); -unsigned int nec7210_update_status_nolock(struct gpib_board *board, struct nec7210_priv *priv); -int nec7210_primary_address(const struct gpib_board *board, - struct nec7210_priv *priv, unsigned int address); -int nec7210_secondary_address(const struct gpib_board *board, struct nec7210_priv *priv, - unsigned int address, int enable); -int nec7210_parallel_poll(struct gpib_board *board, struct nec7210_priv *priv, u8 *result); -void nec7210_serial_poll_response(struct gpib_board *board, - struct nec7210_priv *priv, u8 status); -void nec7210_parallel_poll_configure(struct gpib_board *board, - struct nec7210_priv *priv, unsigned int configuration); -void nec7210_parallel_poll_response(struct gpib_board *board, - struct nec7210_priv *priv, int ist); -u8 nec7210_serial_poll_status(struct gpib_board *board, struct nec7210_priv *priv); -int nec7210_t1_delay(struct gpib_board *board, - struct nec7210_priv *priv, unsigned int nano_sec); -void nec7210_return_to_local(const struct gpib_board *board, struct nec7210_priv *priv); - -// utility functions -void nec7210_board_reset(struct nec7210_priv *priv, const struct gpib_board *board); -void nec7210_board_online(struct nec7210_priv *priv, const struct gpib_board *board); -unsigned int nec7210_set_reg_bits(struct nec7210_priv *priv, unsigned int reg, - unsigned int mask, unsigned int bits); -void nec7210_set_handshake_mode(struct gpib_board *board, struct nec7210_priv *priv, int mode); -void nec7210_release_rfd_holdoff(struct gpib_board *board, struct nec7210_priv *priv); -u8 nec7210_read_data_in(struct gpib_board *board, struct nec7210_priv *priv, int *end); - -// wrappers for io functions -u8 nec7210_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num); -void nec7210_ioport_write_byte(struct nec7210_priv *priv, u8 data, unsigned int register_num); -u8 nec7210_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num); -void nec7210_iomem_write_byte(struct nec7210_priv *priv, u8 data, unsigned int register_num); -u8 nec7210_locking_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num); -void nec7210_locking_ioport_write_byte(struct nec7210_priv *priv, u8 data, - unsigned int register_num); -u8 nec7210_locking_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num); -void nec7210_locking_iomem_write_byte(struct nec7210_priv *priv, u8 data, - unsigned int register_num); - -// interrupt service routine -irqreturn_t nec7210_interrupt(struct gpib_board *board, struct nec7210_priv *priv); -irqreturn_t nec7210_interrupt_have_status(struct gpib_board *board, - struct nec7210_priv *priv, int status1, int status2); - -#endif //_NEC7210_H diff --git a/drivers/staging/gpib/include/nec7210_registers.h b/drivers/staging/gpib/include/nec7210_registers.h deleted file mode 100644 index 067983d7a07f..000000000000 --- a/drivers/staging/gpib/include/nec7210_registers.h +++ /dev/null @@ -1,218 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _NEC7210_REGISTERS_H -#define _NEC7210_REGISTERS_H - -enum nec7210_chipset { - NEC7210, // The original - TNT4882, // NI - NAT4882, // NI - CB7210, // measurement computing - IOT7210, // iotech - IGPIB7210, // Ines - TNT5004, // NI (minor differences to TNT4882) -}; - -/* - * nec7210 register numbers (might need to be multiplied by - * a board-dependent offset to get actually io address offset) - */ -// write registers -enum nec7210_write_regs { - CDOR, // command/data out - IMR1, // interrupt mask 1 - IMR2, // interrupt mask 2 - SPMR, // serial poll mode - ADMR, // address mode - AUXMR, // auxiliary mode - ADR, // address - EOSR, // end-of-string - - // nec7210 has 8 registers - nec7210_num_registers = 8, -}; - -// read registers -enum nec7210_read_regs { - DIR, // data in - ISR1, // interrupt status 1 - ISR2, // interrupt status 2 - SPSR, // serial poll status - ADSR, // address status - CPTR, // command pass though - ADR0, // address 1 - ADR1, // address 2 -}; - -// bit definitions common to nec-7210 compatible registers - -// ISR1: interrupt status register 1 -enum isr1_bits { - HR_DI = (1 << 0), - HR_DO = (1 << 1), - HR_ERR = (1 << 2), - HR_DEC = (1 << 3), - HR_END = (1 << 4), - HR_DET = (1 << 5), - HR_APT = (1 << 6), - HR_CPT = (1 << 7), -}; - -// IMR1: interrupt mask register 1 -enum imr1_bits { - HR_DIIE = (1 << 0), - HR_DOIE = (1 << 1), - HR_ERRIE = (1 << 2), - HR_DECIE = (1 << 3), - HR_ENDIE = (1 << 4), - HR_DETIE = (1 << 5), - HR_APTIE = (1 << 6), - HR_CPTIE = (1 << 7), -}; - -// ISR2, interrupt status register 2 -enum isr2_bits { - HR_ADSC = (1 << 0), - HR_REMC = (1 << 1), - HR_LOKC = (1 << 2), - HR_CO = (1 << 3), - HR_REM = (1 << 4), - HR_LOK = (1 << 5), - HR_SRQI = (1 << 6), - HR_INT = (1 << 7), -}; - -// IMR2, interrupt mask register 2 -enum imr2_bits { - // all the bits in this register that enable interrupts - IMR2_ENABLE_INTR_MASK = 0x4f, - HR_ACIE = (1 << 0), - HR_REMIE = (1 << 1), - HR_LOKIE = (1 << 2), - HR_COIE = (1 << 3), - HR_DMAI = (1 << 4), - HR_DMAO = (1 << 5), - HR_SRQIE = (1 << 6), -}; - -// SPSR, serial poll status register -enum spsr_bits { - HR_PEND = (1 << 6), -}; - -// SPMR, serial poll mode register -enum spmr_bits { - HR_RSV = (1 << 6), -}; - -// ADSR, address status register -enum adsr_bits { - HR_MJMN = (1 << 0), - HR_TA = (1 << 1), - HR_LA = (1 << 2), - HR_TPAS = (1 << 3), - HR_LPAS = (1 << 4), - HR_SPMS = (1 << 5), - HR_NATN = (1 << 6), - HR_CIC = (1 << 7), -}; - -// ADMR, address mode register -enum admr_bits { - HR_ADM0 = (1 << 0), - HR_ADM1 = (1 << 1), - HR_TRM0 = (1 << 4), - HR_TRM1 = (1 << 5), - HR_TRM_EOIOE_TRIG = 0, - HR_TRM_CIC_TRIG = HR_TRM0, - HR_TRM_CIC_EOIOE = HR_TRM1, - HR_TRM_CIC_PE = HR_TRM0 | HR_TRM1, - HR_LON = (1 << 6), - HR_TON = (1 << 7), -}; - -// ADR, bits used in address0, address1 and address0/1 registers -enum adr_bits { - ADDRESS_MASK = 0x1f, /* mask to specify lower 5 bits */ - HR_DL = (1 << 5), - HR_DT = (1 << 6), - HR_ARS = (1 << 7), -}; - -// ADR1, address1 register -enum adr1_bits { - HR_EOI = (1 << 7), -}; - -// AUXMR, auxiliary mode register -enum auxmr_bits { - ICR = 0x20, - PPR = 0x60, - AUXRA = 0x80, - AUXRB = 0xa0, - AUXRE = 0xc0, -}; - -// auxra, auxiliary register A -enum auxra_bits { - HR_HANDSHAKE_MASK = 0x3, - HR_HLDA = 0x1, - HR_HLDE = 0x2, - HR_LCM = 0x3, /* auxra listen continuous */ - HR_REOS = 0x4, - HR_XEOS = 0x8, - HR_BIN = 0x10, -}; - -// auxrb, auxiliary register B -enum auxrb_bits { - HR_CPTE = (1 << 0), - HR_SPEOI = (1 << 1), - HR_TRI = (1 << 2), - HR_INV = (1 << 3), - HR_ISS = (1 << 4), -}; - -enum auxre_bits { - HR_DAC_HLD_DCAS = 0x1, /* perform DAC holdoff on receiving clear */ - HR_DAC_HLD_DTAS = 0x2, /* perform DAC holdoff on receiving trigger */ -}; - -// parallel poll register -enum ppr_bits { - HR_PPS = (1 << 3), - HR_PPU = (1 << 4), -}; - -/* 7210 Auxiliary Commands */ -enum aux_cmds { - AUX_PON = 0x0, /* Immediate Execute pon */ - AUX_CPPF = 0x1, /* Clear Parallel Poll Flag */ - AUX_CR = 0x2, /* Chip Reset */ - AUX_FH = 0x3, /* Finish Handshake */ - AUX_TRIG = 0x4, /* Trigger */ - AUX_RTL = 0x5, /* Return to local */ - AUX_SEOI = 0x6, /* Send EOI */ - AUX_NVAL = 0x7, /* Non-Valid Secondary Command or Address */ - AUX_SPPF = 0x9, /* Set Parallel Poll Flag */ - AUX_VAL = 0xf, /* Valid Secondary Command or Address */ - AUX_GTS = 0x10, /* Go To Standby */ - AUX_TCA = 0x11, /* Take Control Asynchronously */ - AUX_TCS = 0x12, /* Take Control Synchronously */ - AUX_LTN = 0x13, /* Listen */ - AUX_DSC = 0x14, /* Disable System Control */ - AUX_CIFC = 0x16, /* Clear IFC */ - AUX_CREN = 0x17, /* Clear REN */ - AUX_TCSE = 0x1a, /* Take Control Synchronously on End */ - AUX_LTNC = 0x1b, /* Listen in Continuous Mode */ - AUX_LUN = 0x1c, /* Local Unlisten */ - AUX_EPP = 0x1d, /* Execute Parallel Poll */ - AUX_SIFC = 0x1e, /* Set IFC */ - AUX_SREN = 0x1f, /* Set REN */ -}; - -#endif //_NEC7210_REGISTERS_H diff --git a/drivers/staging/gpib/include/plx9050.h b/drivers/staging/gpib/include/plx9050.h deleted file mode 100644 index c911b285a0ca..000000000000 --- a/drivers/staging/gpib/include/plx9050.h +++ /dev/null @@ -1,72 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Header for plx9050 pci chip - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _PLX9050_GPIB_H -#define _PLX9050_GPIB_H - -// plx pci chip registers and bits -enum { - PLX9050_INTCSR_REG = 0x4c, - PLX9050_CNTRL_REG = 0x50 -}; - -enum plx9050_intcsr_bits { - PLX9050_LINTR1_EN_BIT = 0x1, - PLX9050_LINTR1_POLARITY_BIT = 0x2, - PLX9050_LINTR1_STATUS_BIT = 0x4, - PLX9050_LINTR2_EN_BIT = 0x8, - PLX9050_LINTR2_POLARITY_BIT = 0x10, - PLX9050_LINTR2_STATUS_BIT = 0x20, - PLX9050_PCI_INTR_EN_BIT = 0x40, - PLX9050_SOFT_INTR_BIT = 0x80, - PLX9050_LINTR1_SELECT_ENABLE_BIT = 0x100, // 9052 extension - PLX9050_LINTR2_SELECT_ENABLE_BIT = 0x200, // 9052 extension - PLX9050_LINTR1_EDGE_CLEAR_BIT = 0x400, // 9052 extension - PLX9050_LINTR2_EDGE_CLEAR_BIT = 0x800, // 9052 extension -}; - -enum plx9050_cntrl_bits { - PLX9050_WAITO_NOT_USER0_SELECT_BIT = 0x1, - PLX9050_USER0_OUTPUT_BIT = 0x2, - PLX9050_USER0_DATA_BIT = 0x4, - PLX9050_LLOCK_NOT_USER1_SELECT_BIT = 0x8, - PLX9050_USER1_OUTPUT_BIT = 0x10, - PLX9050_USER1_DATA_BIT = 0x20, - PLX9050_CS2_NOT_USER2_SELECT_BIT = 0x40, - PLX9050_USER2_OUTPUT_BIT = 0x80, - PLX9050_USER2_DATA_BIT = 0x100, - PLX9050_CS3_NOT_USER3_SELECT_BIT = 0x200, - PLX9050_USER3_OUTPUT_BIT = 0x400, - PLX9050_USER3_DATA_BIT = 0x800, - PLX9050_PCIBAR_ENABLE_MASK = 0x3000, - PLX9050_PCIBAR_MEMORY_AND_IO_ENABLE_BITS = 0x0, - PLX9050_PCIBAR_MEMORY_NO_IO_ENABLE_BITS = 0x1000, - PLX9050_PCIBAR_IO_NO_MEMORY_ENABLE_BITS = 0x2000, - PLX9050_PCIBAR_MEMORY_AND_IO_TOO_ENABLE_BITS = 0x3000, - PLX9050_PCI_READ_MODE_BIT = 0x4000, - PLX9050_PCI_READ_WITH_WRITE_FLUSH_MODE_BIT = 0x8000, - PLX9050_PCI_READ_NO_FLUSH_MODE_BIT = 0x10000, - PLX9050_PCI_READ_NO_WRITE_MODE_BIT = 0x20000, - PLX9050_PCI_WRITE_MODE_BIT = 0x40000, - PLX9050_PCI_RETRY_DELAY_MASK = 0x780000, - PLX9050_DIRECT_SLAVE_LOCK_ENABLE_BIT = 0x800000, - PLX9050_EEPROM_CLOCK_BIT = 0x1000000, - PLX9050_EEPROM_CHIP_SELECT_BIT = 0x2000000, - PLX9050_WRITE_TO_EEPROM_BIT = 0x4000000, - PLX9050_READ_EEPROM_DATA_BIT = 0x8000000, - PLX9050_EEPROM_VALID_BIT = 0x10000000, - PLX9050_RELOAD_CONFIG_REGISTERS_BIT = 0x20000000, - PLX9050_PCI_SOFTWARE_RESET_BIT = 0x40000000, - PLX9050_MASK_REVISION_BIT = 0x80000000 -}; - -static inline unsigned int PLX9050_PCI_RETRY_DELAY_BITS(unsigned int clocks) -{ - return ((clocks / 8) << 19) & PLX9050_PCI_RETRY_DELAY_MASK; -} - -#endif // _PLX9050_GPIB_H diff --git a/drivers/staging/gpib/include/quancom_pci.h b/drivers/staging/gpib/include/quancom_pci.h deleted file mode 100644 index cdaf0d056be9..000000000000 --- a/drivers/staging/gpib/include/quancom_pci.h +++ /dev/null @@ -1,22 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Quancom pci stuff - * copyright (C) 2005 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _QUANCOM_PCI_H -#define _QUANCOM_PCI_H - -/* quancom registers */ -enum quancom_regs { - QUANCOM_IRQ_CONTROL_STATUS_REG = 0xfc, -}; - -enum quancom_irq_control_status_bits { - QUANCOM_IRQ_ASSERTED_BIT = 0x1, /* readable */ - /* (any write to the register clears the interrupt)*/ - QUANCOM_IRQ_ENABLE_BIT = 0x4, /* writeable */ -}; - -#endif // _QUANCOM_PCI_H diff --git a/drivers/staging/gpib/include/tms9914.h b/drivers/staging/gpib/include/tms9914.h deleted file mode 100644 index e66b75e0fda8..000000000000 --- a/drivers/staging/gpib/include/tms9914.h +++ /dev/null @@ -1,280 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _TMS9914_H -#define _TMS9914_H - -#include <linux/types.h> -#include <linux/interrupt.h> -#include "gpib_state_machines.h" -#include "gpib_types.h" - -enum tms9914_holdoff_mode { - TMS9914_HOLDOFF_NONE, - TMS9914_HOLDOFF_EOI, - TMS9914_HOLDOFF_ALL, -}; - -/* struct used to provide variables local to a tms9914 chip */ -struct tms9914_priv { -#ifdef CONFIG_HAS_IOPORT - u32 iobase; -#endif - void __iomem *mmiobase; - unsigned int offset; // offset between successive tms9914 io addresses - unsigned int dma_channel; - // software copy of bits written to interrupt mask registers - u8 imr0_bits, imr1_bits; - // bits written to address mode register - u8 admr_bits; - u8 auxa_bits; // bits written to auxiliary register A - // used to keep track of board's state, bit definitions given below - unsigned long state; - u8 eos; // eos character - short eos_flags; - u8 spoll_status; - enum tms9914_holdoff_mode holdoff_mode; - unsigned int ppoll_line; - enum talker_function_state talker_state; - enum listener_function_state listener_state; - unsigned ppoll_sense : 1; - unsigned ppoll_enable : 1; - unsigned ppoll_configure_state : 1; - unsigned primary_listen_addressed : 1; - unsigned primary_talk_addressed : 1; - unsigned holdoff_on_end : 1; - unsigned holdoff_on_all : 1; - unsigned holdoff_active : 1; - // wrappers for outb, inb, readb, or writeb - u8 (*read_byte)(struct tms9914_priv *priv, unsigned int register_number); - void (*write_byte)(struct tms9914_priv *priv, u8 byte, unsigned int - register_number); -}; - -// slightly shorter way to access read_byte and write_byte -static inline u8 read_byte(struct tms9914_priv *priv, unsigned int register_number) -{ - return priv->read_byte(priv, register_number); -} - -static inline void write_byte(struct tms9914_priv *priv, u8 byte, unsigned int register_number) -{ - priv->write_byte(priv, byte, register_number); -} - -// struct tms9914_priv.state bit numbers -enum { - PIO_IN_PROGRESS_BN, // pio transfer in progress - DMA_READ_IN_PROGRESS_BN, // dma read transfer in progress - DMA_WRITE_IN_PROGRESS_BN, // dma write transfer in progress - READ_READY_BN, // board has data byte available to read - WRITE_READY_BN, // board is ready to send a data byte - COMMAND_READY_BN, // board is ready to send a command byte - RECEIVED_END_BN, // received END - BUS_ERROR_BN, // bus error - DEV_CLEAR_BN, // device clear received -}; - -// interface functions -int tms9914_read(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read); -int tms9914_write(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written); -int tms9914_command(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, size_t *bytes_written); -int tms9914_take_control(struct gpib_board *board, struct tms9914_priv *priv, int syncronous); -/* - * alternate version of tms9914_take_control which works around buggy tcs - * implementation. - */ -int tms9914_take_control_workaround(struct gpib_board *board, struct tms9914_priv *priv, - int syncronous); -int tms9914_go_to_standby(struct gpib_board *board, struct tms9914_priv *priv); -int tms9914_request_system_control(struct gpib_board *board, struct tms9914_priv *priv, - int request_control); -void tms9914_interface_clear(struct gpib_board *board, struct tms9914_priv *priv, int assert); -void tms9914_remote_enable(struct gpib_board *board, struct tms9914_priv *priv, int enable); -int tms9914_enable_eos(struct gpib_board *board, struct tms9914_priv *priv, u8 eos_bytes, - int compare_8_bits); -void tms9914_disable_eos(struct gpib_board *board, struct tms9914_priv *priv); -unsigned int tms9914_update_status(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int clear_mask); -int tms9914_primary_address(struct gpib_board *board, - struct tms9914_priv *priv, unsigned int address); -int tms9914_secondary_address(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int address, int enable); -int tms9914_parallel_poll(struct gpib_board *board, struct tms9914_priv *priv, u8 *result); -void tms9914_parallel_poll_configure(struct gpib_board *board, - struct tms9914_priv *priv, u8 config); -void tms9914_parallel_poll_response(struct gpib_board *board, - struct tms9914_priv *priv, int ist); -void tms9914_serial_poll_response(struct gpib_board *board, - struct tms9914_priv *priv, u8 status); -u8 tms9914_serial_poll_status(struct gpib_board *board, struct tms9914_priv *priv); -int tms9914_line_status(const struct gpib_board *board, struct tms9914_priv *priv); -unsigned int tms9914_t1_delay(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int nano_sec); -void tms9914_return_to_local(const struct gpib_board *board, struct tms9914_priv *priv); - -// utility functions -void tms9914_board_reset(struct tms9914_priv *priv); -void tms9914_online(struct gpib_board *board, struct tms9914_priv *priv); -void tms9914_release_holdoff(struct tms9914_priv *priv); -void tms9914_set_holdoff_mode(struct tms9914_priv *priv, enum tms9914_holdoff_mode mode); - -// wrappers for io functions -u8 tms9914_ioport_read_byte(struct tms9914_priv *priv, unsigned int register_num); -void tms9914_ioport_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num); -u8 tms9914_iomem_read_byte(struct tms9914_priv *priv, unsigned int register_num); -void tms9914_iomem_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num); - -// interrupt service routine -irqreturn_t tms9914_interrupt(struct gpib_board *board, struct tms9914_priv *priv); -irqreturn_t tms9914_interrupt_have_status(struct gpib_board *board, struct tms9914_priv *priv, - int status1, int status2); - -// tms9914 has 8 registers -enum { - ms9914_num_registers = 8, -}; - -/* - * tms9914 register numbers (might need to be multiplied by - * a board-dependent offset to get actually io address offset) - */ -// write registers -enum { - IMR0 = 0, /* interrupt mask 0 */ - IMR1 = 1, /* interrupt mask 1 */ - AUXCR = 3, /* auxiliary command */ - ADR = 4, /* address register */ - SPMR = 5, /* serial poll mode register */ - PPR = 6, /* parallel poll */ - CDOR = 7, /* data out register */ -}; - -// read registers -enum { - ISR0 = 0, /* interrupt status 0 */ - ISR1 = 1, /* interrupt status 1 */ - ADSR = 2, /* address status */ - BSR = 3, /* bus status */ - CPTR = 6, /* command pass thru */ - DIR = 7, /* data in register */ -}; - -// bit definitions common to tms9914 compatible registers - -/* ISR0 - Register bits */ -enum isr0_bits { - HR_MAC = (1 << 0), /* My Address Change */ - HR_RLC = (1 << 1), /* Remote/Local change */ - HR_SPAS = (1 << 2), /* Serial Poll active State */ - HR_END = (1 << 3), /* END (EOI or EOS) */ - HR_BO = (1 << 4), /* Byte Out */ - HR_BI = (1 << 5), /* Byte In */ -}; - -/* IMR0 - Register bits */ -enum imr0_bits { - HR_MACIE = (1 << 0), /* */ - HR_RLCIE = (1 << 1), /* */ - HR_SPASIE = (1 << 2), /* */ - HR_ENDIE = (1 << 3), /* */ - HR_BOIE = (1 << 4), /* */ - HR_BIIE = (1 << 5), /* */ -}; - -/* ISR1 - Register bits */ -enum isr1_bits { - HR_IFC = (1 << 0), /* IFC asserted */ - HR_SRQ = (1 << 1), /* SRQ asserted */ - HR_MA = (1 << 2), /* My Address */ - HR_DCAS = (1 << 3), /* Device Clear active State */ - HR_APT = (1 << 4), /* Address pass Through */ - HR_UNC = (1 << 5), /* Unrecognized Command */ - HR_ERR = (1 << 6), /* Data Transmission Error */ - HR_GET = (1 << 7), /* Group execute Trigger */ -}; - -/* IMR1 - Register bits */ -enum imr1_bits { - HR_IFCIE = (1 << 0), /* */ - HR_SRQIE = (1 << 1), /* */ - HR_MAIE = (1 << 2), /* */ - HR_DCASIE = (1 << 3), /* */ - HR_APTIE = (1 << 4), /* */ - HR_UNCIE = (1 << 5), /* */ - HR_ERRIE = (1 << 6), /* */ - HR_GETIE = (1 << 7), /* */ -}; - -/* ADSR - Register bits */ -enum adsr_bits { - HR_ULPA = (1 << 0), /* Store last address LSB */ - HR_TA = (1 << 1), /* Talker Adressed */ - HR_LA = (1 << 2), /* Listener adressed */ - HR_TPAS = (1 << 3), /* talker primary address state */ - HR_LPAS = (1 << 4), /* listener " */ - HR_ATN = (1 << 5), /* ATN active */ - HR_LLO = (1 << 6), /* LLO active */ - HR_REM = (1 << 7), /* REM active */ -}; - -/* ADR - Register bits */ -enum adr_bits { - ADDRESS_MASK = 0x1f, /* mask to specify lower 5 bits for ADR */ - HR_DAT = (1 << 5), /* disable talker */ - HR_DAL = (1 << 6), /* disable listener */ - HR_EDPA = (1 << 7), /* enable dual primary addressing */ -}; - -enum bus_status_bits { - BSR_REN_BIT = 0x1, - BSR_IFC_BIT = 0x2, - BSR_SRQ_BIT = 0x4, - BSR_EOI_BIT = 0x8, - BSR_NRFD_BIT = 0x10, - BSR_NDAC_BIT = 0x20, - BSR_DAV_BIT = 0x40, - BSR_ATN_BIT = 0x80, -}; - -/*---------------------------------------------------------*/ -/* TMS 9914 Auxiliary Commands */ -/*---------------------------------------------------------*/ - -enum aux_cmd_bits { - AUX_CS = 0x80, /* set bit instead of clearing it, used with commands marked 'd' below */ - AUX_CHIP_RESET = 0x0, /* d Chip reset */ - AUX_INVAL = 0x1, /* release dac holdoff, invalid command byte */ - AUX_VAL = (AUX_INVAL | AUX_CS), /* release dac holdoff, valid command byte */ - AUX_RHDF = 0x2, /* X Release RFD holdoff */ - AUX_HLDA = 0x3, /* d holdoff on all data */ - AUX_HLDE = 0x4, /* d holdoff on EOI only */ - AUX_NBAF = 0x5, /* X Set new byte available false */ - AUX_FGET = 0x6, /* d force GET */ - AUX_RTL = 0x7, /* d return to local */ - AUX_SEOI = 0x8, /* X send EOI with next byte */ - AUX_LON = 0x9, /* d Listen only */ - AUX_TON = 0xa, /* d Talk only */ - AUX_GTS = 0xb, /* X goto standby */ - AUX_TCA = 0xc, /* X take control asynchronously */ - AUX_TCS = 0xd, /* X take " synchronously */ - AUX_RPP = 0xe, /* d Request parallel poll */ - AUX_SIC = 0xf, /* d send interface clear */ - AUX_SRE = 0x10, /* d send remote enable */ - AUX_RQC = 0x11, /* X request control */ - AUX_RLC = 0x12, /* X release control */ - AUX_DAI = 0x13, /* d disable all interrupts */ - AUX_PTS = 0x14, /* X pass through next secondary */ - AUX_STDL = 0x15, /* d short T1 delay */ - AUX_SHDW = 0x16, /* d shadow handshake */ - AUX_VSTDL = 0x17, /* d very short T1 delay (smj9914 extension) */ - AUX_RSV2 = 0x18, /* d request service bit 2 (smj9914 extension) */ -}; - -#endif //_TMS9914_H diff --git a/drivers/staging/gpib/include/tnt4882_registers.h b/drivers/staging/gpib/include/tnt4882_registers.h deleted file mode 100644 index d54c4cc61168..000000000000 --- a/drivers/staging/gpib/include/tnt4882_registers.h +++ /dev/null @@ -1,192 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2002, 2004 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _TNT4882_REGISTERS_H -#define _TNT4882_REGISTERS_H - -// tnt4882 register offsets -enum { - ACCWR = 0x5, - // offset of auxiliary command register in 9914 mode - AUXCR = 0x6, - INTRT = 0x7, - // register number for auxiliary command register when swap bit is set (9914 mode) - SWAPPED_AUXCR = 0xa, - HSSEL = 0xd, // handshake select register - CNT2 = 0x9, - CNT3 = 0xb, - CFG = 0x10, - SASR = 0x1b, - IMR0 = 0x1d, - IMR3 = 0x12, - CNT0 = 0x14, - CNT1 = 0x16, - KEYREG = 0x17, // key control register (7210 mode only) - CSR = KEYREG, - FIFOB = 0x18, - FIFOA = 0x19, - CCR = 0x1a, // carry cycle register - CMDR = 0x1c, // command register - TIMER = 0x1e, // timer register - - STS1 = 0x10, // T488 Status Register 1 - STS2 = 0x1c, // T488 Status Register 2 - ISR0 = IMR0, - ISR3 = 0x1a, // T488 Interrupt Status Register 3 - BCR = 0x1f, // bus control/status register - BSR = BCR, -}; - -enum { - tnt_pagein_offset = 0x11, -}; - -/*============================================================*/ - -/* TURBO-488 registers bit definitions */ - -enum bus_control_status_bits { - BCSR_REN_BIT = 0x1, - BCSR_IFC_BIT = 0x2, - BCSR_SRQ_BIT = 0x4, - BCSR_EOI_BIT = 0x8, - BCSR_NRFD_BIT = 0x10, - BCSR_NDAC_BIT = 0x20, - BCSR_DAV_BIT = 0x40, - BCSR_ATN_BIT = 0x80, -}; - -/* CFG -- Configuration Register (write only) */ -enum cfg_bits { - TNT_COMMAND = 0x80, /* bytes are command bytes instead of data bytes - * (tnt4882 one-chip and newer only?) - */ - TNT_TLCHE = (1 << 6), /* halt transfer on imr0, imr1, or imr2 interrupt */ - TNT_IN = (1 << 5), /* transfer is GPIB read */ - TNT_A_B = (1 << 4), /* order to use fifos 1=fifo A first(big endian), - * 0=fifo b first(little endian) - */ - TNT_CCEN = (1 << 3), /* enable carry cycle */ - TNT_TMOE = (1 << 2), /* enable CPU bus time limit */ - TNT_TIM_BYTN = (1 << 1), /* tmot reg is: 1=125ns clocks, 0=num bytes */ - TNT_B_16BIT = (1 << 0), /* 1=FIFO is 16-bit register, 0=8-bit */ -}; - -/* CMDR -- Command Register */ -enum cmdr_bits { - CLRSC = 0x2, /* clear the system controller bit */ - SETSC = 0x3, /* set the system controller bit */ - GO = 0x4, /* start fifos */ - STOP = 0x8, /* stop fifos */ - RESET_FIFO = 0x10, /* reset the FIFOs */ - SOFT_RESET = 0x22, /* issue a software reset */ - HARD_RESET = 0x40 /* 500x only? */ -}; - -/* HSSEL -- handshake select register (write only) */ -enum hssel_bits { - TNT_ONE_CHIP_BIT = 0x1, - NODMA = 0x10, - TNT_GO2SIDS_BIT = 0x20, -}; - -/* IMR0 -- Interrupt Mode Register 0 */ -enum imr0_bits { - TNT_SYNCIE_BIT = 0x1, /* handshake sync */ - TNT_TOIE_BIT = 0x2, /* timeout */ - TNT_ATNIE_BIT = 0x4, /* ATN interrupt */ - TNT_IFCIE_BIT = 0x8, /* interface clear interrupt */ - TNT_BTO_BIT = 0x10, /* byte timeout */ - TNT_NLEN_BIT = 0x20, /* treat new line as EOS char */ - TNT_STBOIE_BIT = 0x40, /* status byte out */ - TNT_IMR0_ALWAYS_BITS = 0x80, /* always set this bit on write */ -}; - -/* ISR0 -- Interrupt Status Register 0 */ -enum isr0_bits { - TNT_SYNC_BIT = 0x1, /* handshake sync */ - TNT_TO_BIT = 0x2, /* timeout */ - TNT_ATNI_BIT = 0x4, /* ATN interrupt */ - TNT_IFCI_BIT = 0x8, /* interface clear interrupt */ - TNT_EOS_BIT = 0x10, /* end of string */ - TNT_NL_BIT = 0x20, /* new line receive */ - TNT_STBO_BIT = 0x40, /* status byte out */ - TNT_NBA_BIT = 0x80, /* new byte available */ -}; - -/* ISR3 -- Interrupt Status Register 3 (read only) */ -enum isr3_bits { - HR_DONE = (1 << 0), /* transfer done */ - HR_TLCI = (1 << 1), /* isr0, isr1, or isr2 interrupt asserted */ - HR_NEF = (1 << 2), /* NOT empty fifo */ - HR_NFF = (1 << 3), /* NOT full fifo */ - HR_STOP = (1 << 4), /* fifo empty or STOP command issued */ - HR_SRQI_CIC = (1 << 5), /* SRQ asserted and we are CIC (500x only?)*/ - HR_INTR = (1 << 7), /* isr3 interrupt active */ -}; - -enum keyreg_bits { - MSTD = 0x20, /* enable 350ns T1 delay */ -}; - -/* STS1 -- Status Register 1 (read only) */ -enum sts1_bits { - S_DONE = 0x80, /* DMA done */ - S_SC = 0x40, /* is system controller */ - S_IN = 0x20, /* DMA in (to memory) */ - S_DRQ = 0x10, /* DRQ line (for diagnostics) */ - S_STOP = 0x08, /* DMA stopped */ - S_NDAV = 0x04, /* inverse of DAV */ - S_HALT = 0x02, /* status of transfer machine */ - S_GSYNC = 0x01, /* indicates if GPIB is in sync w I/O */ -}; - -/* STS2 -- Status Register 2 */ -enum sts2_bits { - AFFN = (1 << 3), /* "A full FIFO NOT" (0=FIFO full) */ - AEFN = (1 << 2), /* "A empty FIFO NOT" (0=FIFO empty) */ - BFFN = (1 << 1), /* "B full FIFO NOT" (0=FIFO full) */ - BEFN = (1 << 0), /* "B empty FIFO NOT" (0=FIFO empty) */ -}; - -// Auxiliary commands -enum tnt4882_aux_cmds { - AUX_9914 = 0x15, // switch to 9914 mode - AUX_REQT = 0x18, - AUX_REQF = 0x19, - AUX_PAGEIN = 0x50, // page in alternate registers - AUX_HLDI = 0x51, // rfd holdoff immediately - AUX_CLEAR_END = 0x55, - AUX_7210 = 0x99, // switch to 7210 mode -}; - -enum tnt4882_aux_regs { - AUXRG = 0x40, - AUXRI = 0xe0, -}; - -enum auxg_bits { - /* no talking when no listeners bit (prevents bus errors when data written at wrong time) */ - NTNL_BIT = 0x8, - RPP2_BIT = 0x4, /* set/clear local rpp message */ - CHES_BIT = 0x1, /*clear holdoff on end select bit*/ -}; - -enum auxi_bits { - SISB = 0x1, // static interrupt bits (don't clear isr1, isr2 on read) - PP2 = 0x4, // ignore remote parallel poll configuration - USTD = 0x8, // ultra short (1100 nanosec) T1 delay -}; - -enum sasr_bits { - ACRDY_BIT = 0x4, /* acceptor ready state */ - ADHS_BIT = 0x8, /* acceptor data holdoff state */ - ANHS2_BIT = 0x10, /* acceptor not ready holdoff immediately state */ - ANHS1_BIT = 0x20, /* acceptor not ready holdoff state */ - AEHS_BIT = 0x40, /* acceptor end holdoff state */ -}; - -#endif // _TNT4882_REGISTERS_H diff --git a/drivers/staging/gpib/ines/Makefile b/drivers/staging/gpib/ines/Makefile deleted file mode 100644 index 88241f15ecea..000000000000 --- a/drivers/staging/gpib/ines/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -obj-$(CONFIG_GPIB_INES) += ines_gpib.o - - diff --git a/drivers/staging/gpib/ines/ines.h b/drivers/staging/gpib/ines/ines.h deleted file mode 100644 index 6ad57e9a1216..000000000000 --- a/drivers/staging/gpib/ines/ines.h +++ /dev/null @@ -1,165 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * Header for ines GPIB boards - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _INES_GPIB_H -#define _INES_GPIB_H - -#include "nec7210.h" -#include "gpibP.h" -#include "plx9050.h" -#include "amcc5920.h" -#include "quancom_pci.h" -#include <linux/interrupt.h> - -enum ines_pci_chip { - PCI_CHIP_NONE, - PCI_CHIP_PLX9050, - PCI_CHIP_AMCC5920, - PCI_CHIP_QUANCOM, - PCI_CHIP_QUICKLOGIC5030, -}; - -struct ines_priv { - struct nec7210_priv nec7210_priv; - struct pci_dev *pci_device; - // base address for plx9052 pci chip - unsigned long plx_iobase; - // base address for amcc5920 pci chip - unsigned long amcc_iobase; - unsigned int irq; - enum ines_pci_chip pci_chip_type; - u8 extend_mode_bits; -}; - -/* inb/outb wrappers */ -static inline unsigned int ines_inb(struct ines_priv *priv, unsigned int register_number) -{ - return inb(priv->nec7210_priv.iobase + - register_number * priv->nec7210_priv.offset); -} - -static inline void ines_outb(struct ines_priv *priv, unsigned int value, - unsigned int register_number) -{ - outb(value, priv->nec7210_priv.iobase + - register_number * priv->nec7210_priv.offset); -} - -enum ines_regs { - // read - FIFO_STATUS = 0x8, - ISR3 = 0x9, - ISR4 = 0xa, - IN_FIFO_COUNT = 0x10, - OUT_FIFO_COUNT = 0x11, - EXTEND_STATUS = 0xf, - - // write - XDMA_CONTROL = 0x8, - IMR3 = ISR3, - IMR4 = ISR4, - IN_FIFO_WATERMARK = IN_FIFO_COUNT, - OUT_FIFO_WATERMARK = OUT_FIFO_COUNT, - EXTEND_MODE = 0xf, - - // read-write - XFER_COUNT_LOWER = 0xb, - XFER_COUNT_UPPER = 0xc, - BUS_CONTROL_MONITOR = 0x13, -}; - -enum isr3_imr3_bits { - HW_TIMEOUT_BIT = 0x1, - XFER_COUNT_BIT = 0x2, - CMD_RECEIVED_BIT = 0x4, - TCT_RECEIVED_BIT = 0x8, - IFC_ACTIVE_BIT = 0x10, - ATN_ACTIVE_BIT = 0x20, - FIFO_ERROR_BIT = 0x40, -}; - -enum isr4_imr4_bits { - IN_FIFO_WATERMARK_BIT = 0x1, - OUT_FIFO_WATERMARK_BIT = 0x2, - IN_FIFO_FULL_BIT = 0x4, - OUT_FIFO_EMPTY_BIT = 0x8, - IN_FIFO_READY_BIT = 0x10, - OUT_FIFO_READY_BIT = 0x20, - IN_FIFO_EXIT_WATERMARK_BIT = 0x40, - OUT_FIFO_EXIT_WATERMARK_BIT = 0x80, -}; - -enum extend_mode_bits { - TR3_TRIG_ENABLE_BIT = 0x1, // enable generation of trigger pulse T/R3 pin - // clear message available status bit when chip writes byte with EOI true - MAV_ENABLE_BIT = 0x2, - EOS1_ENABLE_BIT = 0x4, // enable eos register 1 - EOS2_ENABLE_BIT = 0x8, // enable eos register 2 - EOIDIS_BIT = 0x10, // disable EOI interrupt when doing rfd holdoff on end? - XFER_COUNTER_ENABLE_BIT = 0x20, - XFER_COUNTER_OUTPUT_BIT = 0x40, // use counter for output, clear for input - // when xfer counter hits 0, assert EOI on write or RFD holdoff on read - LAST_BYTE_HANDLING_BIT = 0x80, -}; - -enum extend_status_bits { - OUTPUT_MESSAGE_IN_PROGRESS_BIT = 0x1, - SCSEL_BIT = 0x2, // statue of SCSEL pin - LISTEN_DISABLED = 0x4, - IN_FIFO_EMPTY_BIT = 0x8, - OUT_FIFO_FULL_BIT = 0x10, -}; - -// ines adds fifo enable bits to address mode register -enum ines_admr_bits { - IN_FIFO_ENABLE_BIT = 0x8, - OUT_FIFO_ENABLE_BIT = 0x4, -}; - -enum xdma_control_bits { - DMA_OUTPUT_BIT = 0x1, // use dma for output, clear for input - ENABLE_SYNC_DMA_BIT = 0x2, - DMA_ACCESS_EVERY_CYCLE = 0x4, // dma accesses fifo every cycle, clear for every other cycle - DMA_16BIT = 0x8, // clear for 8 bit transfers -}; - -enum bus_control_monitor_bits { - BCM_DAV_BIT = 0x1, - BCM_NRFD_BIT = 0x2, - BCM_NDAC_BIT = 0x4, - BCM_IFC_BIT = 0x8, - BCM_ATN_BIT = 0x10, - BCM_SRQ_BIT = 0x20, - BCM_REN_BIT = 0x40, - BCM_EOI_BIT = 0x80, -}; - -enum ines_aux_reg_bits { - INES_AUXD = 0x40, -}; - -enum ines_aux_cmds { - INES_RFD_HLD_IMMEDIATE = 0x4, - INES_AUX_CLR_OUT_FIFO = 0x5, - INES_AUX_CLR_IN_FIFO = 0x6, - INES_AUX_XMODE = 0xa, -}; - -enum ines_auxd_bits { - INES_FOLLOWING_T1_MASK = 0x3, - INES_FOLLOWING_T1_500ns = 0x0, - INES_FOLLOWING_T1_350ns = 0x1, - INES_FOLLOWING_T1_250ns = 0x2, - INES_INITIAL_TI_MASK = 0xc, - INES_INITIAL_T1_2000ns = 0x0, - INES_INITIAL_T1_1100ns = 0x4, - INES_INITIAL_T1_700ns = 0x8, - INES_T6_2us = 0x0, - INES_T6_50us = 0x10, -}; - -#endif // _INES_GPIB_H diff --git a/drivers/staging/gpib/ines/ines_gpib.c b/drivers/staging/gpib/ines/ines_gpib.c deleted file mode 100644 index a3cf846fd0f9..000000000000 --- a/drivers/staging/gpib/ines/ines_gpib.c +++ /dev/null @@ -1,1500 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 1999 Axel Dziemba (axel.dziemba@ines.de) - * (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include "ines.h" - -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/bitops.h> -#include <asm/dma.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include "gpib_pci_ids.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for Ines iGPIB 72010"); - -static irqreturn_t ines_interrupt(struct gpib_board *board); - -static int ines_line_status(const struct gpib_board *board) -{ - int status = VALID_ALL; - int bcm_bits; - struct ines_priv *ines_priv; - - ines_priv = board->private_data; - - bcm_bits = ines_inb(ines_priv, BUS_CONTROL_MONITOR); - - if (bcm_bits & BCM_REN_BIT) - status |= BUS_REN; - if (bcm_bits & BCM_IFC_BIT) - status |= BUS_IFC; - if (bcm_bits & BCM_SRQ_BIT) - status |= BUS_SRQ; - if (bcm_bits & BCM_EOI_BIT) - status |= BUS_EOI; - if (bcm_bits & BCM_NRFD_BIT) - status |= BUS_NRFD; - if (bcm_bits & BCM_NDAC_BIT) - status |= BUS_NDAC; - if (bcm_bits & BCM_DAV_BIT) - status |= BUS_DAV; - if (bcm_bits & BCM_ATN_BIT) - status |= BUS_ATN; - - return status; -} - -static void ines_set_xfer_counter(struct ines_priv *priv, unsigned int count) -{ - if (count > 0xffff) { - pr_err("bug! tried to set xfer counter > 0xffff\n"); - return; - } - ines_outb(priv, (count >> 8) & 0xff, XFER_COUNT_UPPER); - ines_outb(priv, count & 0xff, XFER_COUNT_LOWER); -} - -static int ines_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - unsigned int retval; - - retval = nec7210_t1_delay(board, nec_priv, nano_sec); - - if (nano_sec <= 250) { - write_byte(nec_priv, INES_AUXD | INES_FOLLOWING_T1_250ns | - INES_INITIAL_T1_2000ns, AUXMR); - retval = 250; - } else if (nano_sec <= 350) { - write_byte(nec_priv, INES_AUXD | INES_FOLLOWING_T1_350ns | - INES_INITIAL_T1_2000ns, AUXMR); - retval = 350; - } else { - write_byte(nec_priv, INES_AUXD | INES_FOLLOWING_T1_500ns | - INES_INITIAL_T1_2000ns, AUXMR); - retval = 500; - } - - return retval; -} - -static inline unsigned short num_in_fifo_bytes(struct ines_priv *ines_priv) -{ - return ines_inb(ines_priv, IN_FIFO_COUNT); -} - -static ssize_t pio_read(struct gpib_board *board, struct ines_priv *ines_priv, u8 *buffer, - size_t length, size_t *nbytes) -{ - ssize_t retval = 0; - unsigned int num_fifo_bytes, i; - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - - *nbytes = 0; - while (*nbytes < length) { - if (wait_event_interruptible(board->wait, - num_in_fifo_bytes(ines_priv) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - return -EINTR; - - num_fifo_bytes = num_in_fifo_bytes(ines_priv); - if (num_fifo_bytes + *nbytes > length) - num_fifo_bytes = length - *nbytes; - - for (i = 0; i < num_fifo_bytes; i++) - buffer[(*nbytes)++] = read_byte(nec_priv, DIR); - if (test_bit(RECEIVED_END_BN, &nec_priv->state) && - num_in_fifo_bytes(ines_priv) == 0) - break; - if (need_resched()) - schedule(); - } - /* make sure RECEIVED_END is in sync */ - ines_interrupt(board); - return retval; -} - -static int ines_accel_read(struct gpib_board *board, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - int counter_setting; - - *end = 0; - *bytes_read = 0; - if (length == 0) - return 0; - - clear_bit(DEV_CLEAR_BN, &nec_priv->state); - - write_byte(nec_priv, INES_RFD_HLD_IMMEDIATE, AUXMR); - - // clear in fifo - nec7210_set_reg_bits(nec_priv, ADMR, IN_FIFO_ENABLE_BIT, 0); - nec7210_set_reg_bits(nec_priv, ADMR, IN_FIFO_ENABLE_BIT, IN_FIFO_ENABLE_BIT); - - ines_priv->extend_mode_bits |= LAST_BYTE_HANDLING_BIT; - ines_priv->extend_mode_bits &= ~XFER_COUNTER_OUTPUT_BIT & ~XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - - counter_setting = length - num_in_fifo_bytes(ines_priv); - if (counter_setting > 0) { - ines_set_xfer_counter(ines_priv, length); - ines_priv->extend_mode_bits |= XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - - // holdoff on END - nec7210_set_handshake_mode(board, nec_priv, HR_HLDE); - /* release rfd holdoff */ - write_byte(nec_priv, AUX_FH, AUXMR); - } - - retval = pio_read(board, ines_priv, buffer, length, bytes_read); - ines_priv->extend_mode_bits &= ~XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - if (retval < 0) { - write_byte(nec_priv, INES_RFD_HLD_IMMEDIATE, AUXMR); - return retval; - } - if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) - *end = 1; - - return retval; -} - -static const int out_fifo_size = 0xff; - -static inline unsigned short num_out_fifo_bytes(struct ines_priv *ines_priv) -{ - return ines_inb(ines_priv, OUT_FIFO_COUNT); -} - -static int ines_write_wait(struct gpib_board *board, struct ines_priv *ines_priv, - unsigned int fifo_threshold) -{ - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - - // wait until byte is ready to be sent - if (wait_event_interruptible(board->wait, - num_out_fifo_bytes(ines_priv) < fifo_threshold || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(BUS_ERROR_BN, &nec_priv->state)) - return -EIO; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - return -EINTR; - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - - return 0; -} - -static int ines_accel_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - size_t count = 0; - ssize_t retval = 0; - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - unsigned int num_bytes, i; - - *bytes_written = 0; - // clear out fifo - nec7210_set_reg_bits(nec_priv, ADMR, OUT_FIFO_ENABLE_BIT, 0); - nec7210_set_reg_bits(nec_priv, ADMR, OUT_FIFO_ENABLE_BIT, OUT_FIFO_ENABLE_BIT); - - ines_priv->extend_mode_bits |= XFER_COUNTER_OUTPUT_BIT; - ines_priv->extend_mode_bits &= ~XFER_COUNTER_ENABLE_BIT; - ines_priv->extend_mode_bits &= ~LAST_BYTE_HANDLING_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - - ines_set_xfer_counter(ines_priv, length); - if (send_eoi) - ines_priv->extend_mode_bits |= LAST_BYTE_HANDLING_BIT; - ines_priv->extend_mode_bits |= XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - - while (count < length) { - retval = ines_write_wait(board, ines_priv, out_fifo_size); - if (retval < 0) - break; - - num_bytes = out_fifo_size - num_out_fifo_bytes(ines_priv); - if (num_bytes + count > length) - num_bytes = length - count; - for (i = 0; i < num_bytes; i++) - write_byte(nec_priv, buffer[count++], CDOR); - } - if (retval < 0) { - ines_priv->extend_mode_bits &= ~XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - *bytes_written = length - num_out_fifo_bytes(ines_priv); - return retval; - } - // wait last byte has been sent - retval = ines_write_wait(board, ines_priv, 1); - ines_priv->extend_mode_bits &= ~XFER_COUNTER_ENABLE_BIT; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - *bytes_written = length - num_out_fifo_bytes(ines_priv); - - return retval; -} - -static irqreturn_t ines_pci_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct ines_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - - if (priv->pci_chip_type == PCI_CHIP_QUANCOM) { - if ((inb(nec_priv->iobase + - QUANCOM_IRQ_CONTROL_STATUS_REG) & - QUANCOM_IRQ_ASSERTED_BIT)) - outb(QUANCOM_IRQ_ENABLE_BIT, nec_priv->iobase + - QUANCOM_IRQ_CONTROL_STATUS_REG); - } - - return ines_interrupt(board); -} - -static irqreturn_t ines_interrupt(struct gpib_board *board) -{ - struct ines_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - unsigned int isr3_bits, isr4_bits; - unsigned long flags; - int wake = 0; - - spin_lock_irqsave(&board->spinlock, flags); - - nec7210_interrupt(board, nec_priv); - isr3_bits = ines_inb(priv, ISR3); - isr4_bits = ines_inb(priv, ISR4); - if (isr3_bits & IFC_ACTIVE_BIT) { - push_gpib_event(board, EVENT_IFC); - wake++; - } - if (isr3_bits & FIFO_ERROR_BIT) - dev_err(board->gpib_dev, "fifo error\n"); - if (isr3_bits & XFER_COUNT_BIT) - wake++; - - if (isr4_bits & (IN_FIFO_WATERMARK_BIT | IN_FIFO_FULL_BIT | OUT_FIFO_WATERMARK_BIT | - OUT_FIFO_EMPTY_BIT)) - wake++; - - if (wake) - wake_up_interruptible(&board->wait); - spin_unlock_irqrestore(&board->spinlock, flags); - return IRQ_HANDLED; -} - -static int ines_pci_attach(struct gpib_board *board, const struct gpib_board_config *config); -static int ines_pci_accel_attach(struct gpib_board *board, const struct gpib_board_config *config); -static int ines_isa_attach(struct gpib_board *board, const struct gpib_board_config *config); - -static void ines_pci_detach(struct gpib_board *board); -static void ines_isa_detach(struct gpib_board *board); - -enum ines_pci_vendor_ids { - PCI_VENDOR_ID_INES_QUICKLOGIC = 0x16da -}; - -enum ines_pci_device_ids { - PCI_DEVICE_ID_INES_GPIB_AMCC = 0x8507, - PCI_DEVICE_ID_INES_GPIB_QL5030 = 0x11, -}; - -enum ines_pci_subdevice_ids { - PCI_SUBDEVICE_ID_INES_GPIB = 0x1072 -}; - -static struct pci_device_id ines_pci_table[] = { - {PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_PLX, - PCI_SUBDEVICE_ID_INES_GPIB, 0, 0, 0}, - {PCI_VENDOR_ID_AMCC, PCI_DEVICE_ID_INES_GPIB_AMCC, PCI_VENDOR_ID_AMCC, - PCI_SUBDEVICE_ID_INES_GPIB, 0, 0, 0}, - {PCI_VENDOR_ID_INES_QUICKLOGIC, PCI_DEVICE_ID_INES_GPIB_QL5030, - PCI_VENDOR_ID_INES_QUICKLOGIC, PCI_DEVICE_ID_INES_GPIB_QL5030, 0, 0, 0}, - {PCI_DEVICE(PCI_VENDOR_ID_QUANCOM, PCI_DEVICE_ID_QUANCOM_GPIB)}, - {0} -}; -MODULE_DEVICE_TABLE(pci, ines_pci_table); - -struct ines_pci_id { - unsigned int vendor_id; - unsigned int device_id; - int subsystem_vendor_id; - int subsystem_device_id; - unsigned int gpib_region; - unsigned int io_offset; - enum ines_pci_chip pci_chip_type; -}; - -static struct ines_pci_id pci_ids[] = { - {.vendor_id = PCI_VENDOR_ID_PLX, - .device_id = PCI_DEVICE_ID_PLX_9050, - .subsystem_vendor_id = PCI_VENDOR_ID_PLX, - .subsystem_device_id = PCI_SUBDEVICE_ID_INES_GPIB, - .gpib_region = 2, - .io_offset = 1, - .pci_chip_type = PCI_CHIP_PLX9050, - }, - {.vendor_id = PCI_VENDOR_ID_AMCC, - .device_id = PCI_DEVICE_ID_INES_GPIB_AMCC, - .subsystem_vendor_id = PCI_VENDOR_ID_AMCC, - .subsystem_device_id = PCI_SUBDEVICE_ID_INES_GPIB, - .gpib_region = 1, - .io_offset = 1, - .pci_chip_type = PCI_CHIP_AMCC5920, - }, - {.vendor_id = PCI_VENDOR_ID_INES_QUICKLOGIC, - .device_id = PCI_DEVICE_ID_INES_GPIB_QL5030, - .subsystem_vendor_id = PCI_VENDOR_ID_INES_QUICKLOGIC, - .subsystem_device_id = PCI_DEVICE_ID_INES_GPIB_QL5030, - .gpib_region = 1, - .io_offset = 1, - .pci_chip_type = PCI_CHIP_QUICKLOGIC5030, - }, - {.vendor_id = PCI_VENDOR_ID_QUANCOM, - .device_id = PCI_DEVICE_ID_QUANCOM_GPIB, - .subsystem_vendor_id = -1, - .subsystem_device_id = -1, - .gpib_region = 0, - .io_offset = 4, - .pci_chip_type = PCI_CHIP_QUANCOM, - }, -}; - -static const int num_pci_chips = ARRAY_SIZE(pci_ids); - -// wrappers for interface functions -static int ines_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - struct ines_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - ssize_t retval; - int dummy; - - retval = nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); - if (retval < 0) { - write_byte(nec_priv, INES_RFD_HLD_IMMEDIATE, AUXMR); - - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - - nec7210_read_data_in(board, nec_priv, &dummy); - } - return retval; -} - -static int ines_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int ines_command(struct gpib_board *board, u8 *buffer, size_t length, size_t *bytes_written) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int ines_take_control(struct gpib_board *board, int synchronous) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int ines_go_to_standby(struct gpib_board *board) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int ines_request_system_control(struct gpib_board *board, int request_control) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_request_system_control(board, &priv->nec7210_priv, request_control); -} - -static void ines_interface_clear(struct gpib_board *board, int assert) -{ - struct ines_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void ines_remote_enable(struct gpib_board *board, int enable) -{ - struct ines_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int ines_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void ines_disable_eos(struct gpib_board *board) -{ - struct ines_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int ines_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int ines_primary_address(struct gpib_board *board, unsigned int address) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int ines_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int ines_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void ines_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct ines_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, config); -} - -static void ines_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct ines_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void ines_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct ines_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static u8 ines_serial_poll_status(struct gpib_board *board) -{ - struct ines_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static void ines_return_to_local(struct gpib_board *board) -{ - struct ines_priv *priv = board->private_data; - - nec7210_return_to_local(board, &priv->nec7210_priv); -} - -static struct gpib_interface ines_pci_unaccel_interface = { - .name = "ines_pci_unaccel", - .attach = ines_pci_attach, - .detach = ines_pci_detach, - .read = ines_read, - .write = ines_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static struct gpib_interface ines_pci_interface = { - .name = "ines_pci", - .attach = ines_pci_accel_attach, - .detach = ines_pci_detach, - .read = ines_accel_read, - .write = ines_accel_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static struct gpib_interface ines_pci_accel_interface = { - .name = "ines_pci_accel", - .attach = ines_pci_accel_attach, - .detach = ines_pci_detach, - .read = ines_accel_read, - .write = ines_accel_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static struct gpib_interface ines_isa_interface = { - .name = "ines_isa", - .attach = ines_isa_attach, - .detach = ines_isa_detach, - .read = ines_accel_read, - .write = ines_accel_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static int ines_allocate_private(struct gpib_board *board) -{ - struct ines_priv *priv; - - board->private_data = kmalloc(sizeof(struct ines_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - priv = board->private_data; - memset(priv, 0, sizeof(struct ines_priv)); - init_nec7210_private(&priv->nec7210_priv); - return 0; -} - -static void ines_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static int ines_generic_attach(struct gpib_board *board) -{ - struct ines_priv *ines_priv; - struct nec7210_priv *nec_priv; - - board->status = 0; - - if (ines_allocate_private(board)) - return -ENOMEM; - ines_priv = board->private_data; - nec_priv = &ines_priv->nec7210_priv; - nec_priv->read_byte = nec7210_ioport_read_byte; - nec_priv->write_byte = nec7210_ioport_write_byte; - nec_priv->offset = 1; - nec_priv->type = IGPIB7210; - ines_priv->pci_chip_type = PCI_CHIP_NONE; - - return 0; -} - -static void ines_online(struct ines_priv *ines_priv, const struct gpib_board *board, int use_accel) -{ - struct nec7210_priv *nec_priv = &ines_priv->nec7210_priv; - - /* ines doesn't seem to use internal count register */ - write_byte(nec_priv, ICR | 0, AUXMR); - - write_byte(nec_priv, INES_AUX_XMODE, AUXMR); - write_byte(nec_priv, INES_RFD_HLD_IMMEDIATE, AUXMR); - - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - - write_byte(nec_priv, INES_AUXD | 0, AUXMR); - ines_outb(ines_priv, 0, XDMA_CONTROL); - ines_priv->extend_mode_bits = 0; - ines_outb(ines_priv, ines_priv->extend_mode_bits, EXTEND_MODE); - if (use_accel) { - ines_outb(ines_priv, 0x80, OUT_FIFO_WATERMARK); - ines_outb(ines_priv, 0x80, IN_FIFO_WATERMARK); - ines_outb(ines_priv, IFC_ACTIVE_BIT | ATN_ACTIVE_BIT | - FIFO_ERROR_BIT | XFER_COUNT_BIT, IMR3); - ines_outb(ines_priv, IN_FIFO_WATERMARK_BIT | IN_FIFO_FULL_BIT | - OUT_FIFO_WATERMARK_BIT | OUT_FIFO_EMPTY_BIT, IMR4); - } else { - nec7210_set_reg_bits(nec_priv, ADMR, IN_FIFO_ENABLE_BIT | OUT_FIFO_ENABLE_BIT, 0); - ines_outb(ines_priv, IFC_ACTIVE_BIT | FIFO_ERROR_BIT, IMR3); - ines_outb(ines_priv, 0, IMR4); - } - - nec7210_board_online(nec_priv, board); - if (use_accel) - nec7210_set_reg_bits(nec_priv, IMR1, HR_DOIE | HR_DIIE, 0); -} - -static int ines_common_pci_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - int retval; - struct ines_pci_id found_id; - unsigned int i; - struct pci_dev *pdev; - - memset(&found_id, 0, sizeof(found_id)); - - retval = ines_generic_attach(board); - if (retval) - return retval; - - ines_priv = board->private_data; - nec_priv = &ines_priv->nec7210_priv; - - // find board - ines_priv->pci_device = NULL; - for (i = 0; i < num_pci_chips && !ines_priv->pci_device; i++) { - pdev = NULL; - do { - if (pci_ids[i].subsystem_vendor_id >= 0 && - pci_ids[i].subsystem_device_id >= 0) - pdev = pci_get_subsys(pci_ids[i].vendor_id, pci_ids[i].device_id, - pci_ids[i].subsystem_vendor_id, - pci_ids[i].subsystem_device_id, pdev); - else - pdev = pci_get_device(pci_ids[i].vendor_id, pci_ids[i].device_id, - pdev); - if (!pdev) - break; - if (config->pci_bus >= 0 && config->pci_bus != pdev->bus->number) - continue; - if (config->pci_slot >= 0 && config->pci_slot != PCI_SLOT(pdev->devfn)) - continue; - found_id = pci_ids[i]; - ines_priv->pci_device = pdev; - break; - } while (1); - } - if (!ines_priv->pci_device) { - dev_err(board->gpib_dev, "could not find ines PCI board\n"); - return -1; - } - - if (pci_enable_device(ines_priv->pci_device)) { - dev_err(board->gpib_dev, "error enabling pci device\n"); - return -1; - } - - if (pci_request_regions(ines_priv->pci_device, DRV_NAME)) - return -1; - nec_priv->iobase = pci_resource_start(ines_priv->pci_device, - found_id.gpib_region); - - ines_priv->pci_chip_type = found_id.pci_chip_type; - nec_priv->offset = found_id.io_offset; - switch (ines_priv->pci_chip_type) { - case PCI_CHIP_PLX9050: - ines_priv->plx_iobase = pci_resource_start(ines_priv->pci_device, 1); - break; - case PCI_CHIP_AMCC5920: - ines_priv->amcc_iobase = pci_resource_start(ines_priv->pci_device, 0); - break; - case PCI_CHIP_QUANCOM: - break; - case PCI_CHIP_QUICKLOGIC5030: - break; - default: - dev_err(board->gpib_dev, "unspecified chip type? (bug)\n"); - nec_priv->iobase = 0; - pci_release_regions(ines_priv->pci_device); - return -1; - } - - nec7210_board_reset(nec_priv, board); -#ifdef QUANCOM_PCI - if (ines_priv->pci_chip_type == PCI_CHIP_QUANCOM) { - /* change interrupt polarity */ - nec_priv->auxb_bits |= HR_INV; - ines_outb(ines_priv, nec_priv->auxb_bits, AUXMR); - } -#endif - isr_flags |= IRQF_SHARED; - if (request_irq(ines_priv->pci_device->irq, ines_pci_interrupt, isr_flags, - DRV_NAME, board)) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", ines_priv->pci_device->irq); - return -1; - } - ines_priv->irq = ines_priv->pci_device->irq; - - // enable interrupts on pci chip - switch (ines_priv->pci_chip_type) { - case PCI_CHIP_PLX9050: - outl(PLX9050_LINTR1_EN_BIT | PLX9050_LINTR1_POLARITY_BIT | PLX9050_PCI_INTR_EN_BIT, - ines_priv->plx_iobase + PLX9050_INTCSR_REG); - break; - case PCI_CHIP_AMCC5920: - { - static const int region = 1; - static const int num_wait_states = 7; - u32 bits; - - bits = amcc_prefetch_bits(region, PREFETCH_DISABLED); - bits |= amcc_PTADR_mode_bit(region); - bits |= amcc_disable_write_fifo_bit(region); - bits |= amcc_wait_state_bits(region, num_wait_states); - outl(bits, ines_priv->amcc_iobase + AMCC_PASS_THRU_REG); - outl(AMCC_ADDON_INTR_ENABLE_BIT, ines_priv->amcc_iobase + AMCC_INTCS_REG); - } - break; - case PCI_CHIP_QUANCOM: - outb(QUANCOM_IRQ_ENABLE_BIT, nec_priv->iobase + - QUANCOM_IRQ_CONTROL_STATUS_REG); - break; - case PCI_CHIP_QUICKLOGIC5030: - break; - default: - dev_err(board->gpib_dev, "unspecified chip type? (bug)\n"); - return -1; - } - - return 0; -} - -static int ines_pci_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - int retval; - - retval = ines_common_pci_attach(board, config); - if (retval < 0) - return retval; - - ines_priv = board->private_data; - ines_online(ines_priv, board, 0); - - return 0; -} - -static int ines_pci_accel_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - int retval; - - retval = ines_common_pci_attach(board, config); - if (retval < 0) - return retval; - - ines_priv = board->private_data; - ines_online(ines_priv, board, 1); - - return 0; -} - -static const int ines_isa_iosize = 0x20; - -static int ines_isa_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - int retval; - - retval = ines_generic_attach(board); - if (retval) - return retval; - - ines_priv = board->private_data; - nec_priv = &ines_priv->nec7210_priv; - - if (!request_region(config->ibbase, ines_isa_iosize, DRV_NAME)) { - dev_err(board->gpib_dev, "ioports at 0x%x already in use\n", - config->ibbase); - return -EBUSY; - } - nec_priv->iobase = config->ibbase; - nec_priv->offset = 1; - nec7210_board_reset(nec_priv, board); - if (request_irq(config->ibirq, ines_pci_interrupt, isr_flags, DRV_NAME, board)) { - dev_err(board->gpib_dev, "failed to allocate IRQ %d\n", config->ibirq); - return -1; - } - ines_priv->irq = config->ibirq; - ines_online(ines_priv, board, 1); - return 0; -} - -static void ines_pci_detach(struct gpib_board *board) -{ - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (ines_priv) { - nec_priv = &ines_priv->nec7210_priv; - if (ines_priv->irq) { - // disable interrupts - switch (ines_priv->pci_chip_type) { - case PCI_CHIP_AMCC5920: - if (ines_priv->plx_iobase) - outl(0, ines_priv->plx_iobase + PLX9050_INTCSR_REG); - break; - case PCI_CHIP_QUANCOM: - if (nec_priv->iobase) - outb(0, nec_priv->iobase + - QUANCOM_IRQ_CONTROL_STATUS_REG); - break; - default: - break; - } - free_irq(ines_priv->irq, board); - } - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - pci_release_regions(ines_priv->pci_device); - } - if (ines_priv->pci_device) - pci_dev_put(ines_priv->pci_device); - } - ines_free_private(board); -} - -static void ines_isa_detach(struct gpib_board *board) -{ - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (ines_priv) { - nec_priv = &ines_priv->nec7210_priv; - if (ines_priv->irq) - free_irq(ines_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - release_region(nec_priv->iobase, ines_isa_iosize); - } - } - ines_free_private(board); -} - -static int ines_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - return 0; -} - -static struct pci_driver ines_pci_driver = { - .name = "ines_gpib", - .id_table = ines_pci_table, - .probe = &ines_pci_probe -}; - -#ifdef CONFIG_GPIB_PCMCIA - -#include <linux/kernel.h> -#include <linux/ptrace.h> -#include <linux/string.h> -#include <linux/timer.h> - -#include <pcmcia/cistpl.h> -#include <pcmcia/ds.h> -#include <pcmcia/cisreg.h> - -static const int ines_pcmcia_iosize = 0x20; - -/* - * The event() function is this driver's Card Services event handler. - * It will be called by Card Services when an appropriate card status - * event is received. The config() and release() entry points are - * used to configure or release a socket, in response to card insertion - * and ejection events. They are invoked from the gpib event - * handler. - */ - -static int ines_gpib_config(struct pcmcia_device *link); -static void ines_gpib_release(struct pcmcia_device *link); -static int ines_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config); -static int ines_pcmcia_accel_attach(struct gpib_board *board, - const struct gpib_board_config *config); -static void ines_pcmcia_detach(struct gpib_board *board); -static int ines_common_pcmcia_attach(struct gpib_board *board); -/* - * A linked list of "instances" of the gpib device. Each actual - * PCMCIA card corresponds to one device instance, and is described - * by one dev_link_t structure (defined in ds.h). - * - * You may not want to use a linked list for this -- for example, the - * memory card driver uses an array of dev_link_t pointers, where minor - * device numbers are used to derive the corresponding array index. - */ - -static struct pcmcia_device *curr_dev; - -/* - * A dev_link_t structure has fields for most things that are needed - * to keep track of a socket, but there will usually be some device - * specific information that also needs to be kept track of. The - * 'priv' pointer in a dev_link_t structure can be used to point to - * a device-specific private data structure, like this. - * - * A driver needs to provide a dev_node_t structure for each device - * on a card. In some cases, there is only one device per card (for - * example, ethernet cards, modems). In other cases, there may be - * many actual or logical devices (SCSI adapters, memory cards with - * multiple partitions). The dev_node_t structures need to be kept - * in a linked list starting at the 'dev' field of a dev_link_t - * structure. We allocate them in the card's private data structure, - * because they generally can't be allocated dynamically. - */ - -struct local_info { - struct pcmcia_device *p_dev; - struct gpib_board *dev; - u_short manfid; - u_short cardid; -}; - -/* - * gpib_attach() creates an "instance" of the driver, allocating - * local data structures for one device. The device is registered - * with Card Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a - * card insertion event. - */ -static int ines_gpib_probe(struct pcmcia_device *link) -{ - struct local_info *info; - -// int ret, i; - - /* Allocate space for private device-specific data */ - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - info->p_dev = link; - link->priv = info; - - /* The io structure describes IO port mapping */ - link->resource[0]->end = 32; - link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->io_lines = 5; - - /* General socket configuration */ - link->config_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; - - /* Register with Card Services */ - curr_dev = link; - return ines_gpib_config(link); -} - -/* - * This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ -static void ines_gpib_remove(struct pcmcia_device *link) -{ - struct local_info *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (info->dev) - ines_pcmcia_detach(info->dev); - ines_gpib_release(link); - - //free_netdev(dev); - kfree(info); -} - -static int ines_gpib_config_iteration(struct pcmcia_device *link, void *priv_data) -{ - return pcmcia_request_io(link); -} - -/* - * gpib_config() is scheduled to run after a CARD_INSERTION event - * is received, to configure the PCMCIA socket, and to make the - * device available to the system. - */ -static int ines_gpib_config(struct pcmcia_device *link) -{ - int retval; - void __iomem *virt; - - retval = pcmcia_loop_config(link, &ines_gpib_config_iteration, NULL); - if (retval) { - dev_warn(&link->dev, "no configuration found\n"); - ines_gpib_release(link); - return -ENODEV; - } - - dev_dbg(&link->dev, "ines_cs: manufacturer: 0x%x card: 0x%x\n", - link->manf_id, link->card_id); - - /* - * for the ines card we have to setup the configuration registers in - * attribute memory here - */ - link->resource[2]->flags |= WIN_MEMORY_TYPE_AM | WIN_DATA_WIDTH_8 | WIN_ENABLE; - link->resource[2]->end = 0x1000; - retval = pcmcia_request_window(link, link->resource[2], 250); - if (retval) { - dev_warn(&link->dev, "pcmcia_request_window failed\n"); - ines_gpib_release(link); - return -ENODEV; - } - retval = pcmcia_map_mem_page(link, link->resource[2], 0); - if (retval) { - dev_warn(&link->dev, "pcmcia_map_mem_page failed\n"); - ines_gpib_release(link); - return -ENODEV; - } - virt = ioremap(link->resource[2]->start, resource_size(link->resource[2])); - writeb((link->resource[2]->start >> 2) & 0xff, virt + 0xf0); // IOWindow base - iounmap(virt); - - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping. - */ - retval = pcmcia_enable_device(link); - if (retval) { - ines_gpib_release(link); - return -ENODEV; - } - return 0; -} /* gpib_config */ - -/* - * After a card is removed, gpib_release() will unregister the net - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ - -static void ines_gpib_release(struct pcmcia_device *link) -{ - pcmcia_disable_device(link); -} /* gpib_release */ - -static int ines_gpib_suspend(struct pcmcia_device *link) -{ - //struct local_info *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (link->open) - dev_err(&link->dev, "Device still open\n"); - //netif_device_detach(dev); - - return 0; -} - -static int ines_gpib_resume(struct pcmcia_device *link) -{ - //struct local_info_t *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - /*if (link->open) { - * ni_gpib_probe(dev); / really? - * //netif_device_attach(dev); - *} - */ - return ines_gpib_config(link); -} - -static struct pcmcia_device_id ines_pcmcia_ids[] = { - PCMCIA_DEVICE_MANF_CARD(0x01b4, 0x4730), - PCMCIA_DEVICE_NULL -}; -MODULE_DEVICE_TABLE(pcmcia, ines_pcmcia_ids); - -static struct pcmcia_driver ines_gpib_cs_driver = { - .owner = THIS_MODULE, - .name = "ines_gpib_cs", - .id_table = ines_pcmcia_ids, - .probe = ines_gpib_probe, - .remove = ines_gpib_remove, - .suspend = ines_gpib_suspend, - .resume = ines_gpib_resume, -}; - -static void ines_pcmcia_cleanup_module(void) -{ - pcmcia_unregister_driver(&ines_gpib_cs_driver); -} - -static struct gpib_interface ines_pcmcia_unaccel_interface = { - .name = "ines_pcmcia_unaccel", - .attach = ines_pcmcia_attach, - .detach = ines_pcmcia_detach, - .read = ines_read, - .write = ines_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static struct gpib_interface ines_pcmcia_accel_interface = { - .name = "ines_pcmcia_accel", - .attach = ines_pcmcia_accel_attach, - .detach = ines_pcmcia_detach, - .read = ines_accel_read, - .write = ines_accel_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static struct gpib_interface ines_pcmcia_interface = { - .name = "ines_pcmcia", - .attach = ines_pcmcia_accel_attach, - .detach = ines_pcmcia_detach, - .read = ines_accel_read, - .write = ines_accel_write, - .command = ines_command, - .take_control = ines_take_control, - .go_to_standby = ines_go_to_standby, - .request_system_control = ines_request_system_control, - .interface_clear = ines_interface_clear, - .remote_enable = ines_remote_enable, - .enable_eos = ines_enable_eos, - .disable_eos = ines_disable_eos, - .parallel_poll = ines_parallel_poll, - .parallel_poll_configure = ines_parallel_poll_configure, - .parallel_poll_response = ines_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ines_line_status, - .update_status = ines_update_status, - .primary_address = ines_primary_address, - .secondary_address = ines_secondary_address, - .serial_poll_response = ines_serial_poll_response, - .serial_poll_status = ines_serial_poll_status, - .t1_delay = ines_t1_delay, - .return_to_local = ines_return_to_local, -}; - -static irqreturn_t ines_pcmcia_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - - return ines_interrupt(board); -} - -static int ines_common_pcmcia_attach(struct gpib_board *board) -{ - struct ines_priv *ines_priv; - struct nec7210_priv *nec_priv; - int retval; - - if (!curr_dev) { - dev_err(board->gpib_dev, "no ines pcmcia cards found\n"); - return -1; - } - - retval = ines_generic_attach(board); - if (retval) - return retval; - - ines_priv = board->private_data; - nec_priv = &ines_priv->nec7210_priv; - - if (!request_region(curr_dev->resource[0]->start, - resource_size(curr_dev->resource[0]), DRV_NAME)) { - dev_err(board->gpib_dev, "ioports at 0x%lx already in use\n", - (unsigned long)(curr_dev->resource[0]->start)); - return -1; - } - - nec_priv->iobase = curr_dev->resource[0]->start; - - nec7210_board_reset(nec_priv, board); - - if (request_irq(curr_dev->irq, ines_pcmcia_interrupt, IRQF_SHARED, - "pcmcia-gpib", board)) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", curr_dev->irq); - return -1; - } - ines_priv->irq = curr_dev->irq; - - return 0; -} - -static int ines_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - int retval; - - retval = ines_common_pcmcia_attach(board); - if (retval < 0) - return retval; - - ines_priv = board->private_data; - ines_online(ines_priv, board, 0); - - return 0; -} - -static int ines_pcmcia_accel_attach(struct gpib_board *board, - const struct gpib_board_config *config) -{ - struct ines_priv *ines_priv; - int retval; - - retval = ines_common_pcmcia_attach(board); - if (retval < 0) - return retval; - - ines_priv = board->private_data; - ines_online(ines_priv, board, 1); - - return 0; -} - -static void ines_pcmcia_detach(struct gpib_board *board) -{ - struct ines_priv *ines_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (ines_priv) { - nec_priv = &ines_priv->nec7210_priv; - if (ines_priv->irq) - free_irq(ines_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - release_region(nec_priv->iobase, ines_pcmcia_iosize); - } - } - ines_free_private(board); -} - -#endif /* CONFIG_GPIB_PCMCIA */ - -static int __init ines_init_module(void) -{ - int ret; - - ret = pci_register_driver(&ines_pci_driver); - if (ret) { - pr_err("pci_register_driver failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&ines_pci_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci; - } - - ret = gpib_register_driver(&ines_pci_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci_unaccel; - } - - ret = gpib_register_driver(&ines_pci_accel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pci_accel; - } - - ret = gpib_register_driver(&ines_isa_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_isa; - } - -#ifdef CONFIG_GPIB_PCMCIA - ret = gpib_register_driver(&ines_pcmcia_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia; - } - - ret = gpib_register_driver(&ines_pcmcia_unaccel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia_unaccel; - } - - ret = gpib_register_driver(&ines_pcmcia_accel_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pcmcia_accel; - } - - ret = pcmcia_register_driver(&ines_gpib_cs_driver); - if (ret) { - pr_err("pcmcia_register_driver failed: error = %d\n", ret); - goto err_pcmcia_driver; - } -#endif - - return 0; - -#ifdef CONFIG_GPIB_PCMCIA -err_pcmcia_driver: - gpib_unregister_driver(&ines_pcmcia_accel_interface); -err_pcmcia_accel: - gpib_unregister_driver(&ines_pcmcia_unaccel_interface); -err_pcmcia_unaccel: - gpib_unregister_driver(&ines_pcmcia_interface); -err_pcmcia: -#endif - gpib_unregister_driver(&ines_isa_interface); -err_isa: - gpib_unregister_driver(&ines_pci_accel_interface); -err_pci_accel: - gpib_unregister_driver(&ines_pci_unaccel_interface); -err_pci_unaccel: - gpib_unregister_driver(&ines_pci_interface); -err_pci: - pci_unregister_driver(&ines_pci_driver); - - return ret; -} - -static void __exit ines_exit_module(void) -{ - gpib_unregister_driver(&ines_pci_interface); - gpib_unregister_driver(&ines_pci_unaccel_interface); - gpib_unregister_driver(&ines_pci_accel_interface); - gpib_unregister_driver(&ines_isa_interface); -#ifdef CONFIG_GPIB_PCMCIA - gpib_unregister_driver(&ines_pcmcia_interface); - gpib_unregister_driver(&ines_pcmcia_unaccel_interface); - gpib_unregister_driver(&ines_pcmcia_accel_interface); - ines_pcmcia_cleanup_module(); -#endif - - pci_unregister_driver(&ines_pci_driver); -} - -module_init(ines_init_module); -module_exit(ines_exit_module); diff --git a/drivers/staging/gpib/lpvo_usb_gpib/Makefile b/drivers/staging/gpib/lpvo_usb_gpib/Makefile deleted file mode 100644 index 360553488e6d..000000000000 --- a/drivers/staging/gpib/lpvo_usb_gpib/Makefile +++ /dev/null @@ -1,3 +0,0 @@ - -obj-$(CONFIG_GPIB_LPVO) += lpvo_usb_gpib.o - diff --git a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c b/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c deleted file mode 100644 index dd68c4843490..000000000000 --- a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c +++ /dev/null @@ -1,2025 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * This code has been developed at the Department of Physics (University * - * of Florence, Italy) to support in linux-gpib the open usb-gpib adapter * - * implemented at the University of Ljubljana (lpvo.fe.uni-lj.si/gpib) * - * * - * copyright : (C) 2011 Marcello Carla' * - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define NAME KBUILD_MODNAME - -/* base module includes */ - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/tty.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/vmalloc.h> -#include <linux/spinlock.h> -#include <linux/file.h> -#include <linux/timer.h> -#include <linux/delay.h> -#include <linux/sched/signal.h> -#include <linux/usb.h> - -#include "gpibP.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for LPVO usb devices"); - -/* - * Table of devices that work with this driver. - * - * Currently, only one device is known to be used in the - * lpvo_usb_gpib adapter (FTDI 0403:6001). - * If your adapter uses a different chip, insert a line - * in the following table with proper <Vendor-id>, <Product-id>. - * - * To have your chip automatically handled by the driver, - * update files "/usr/local/etc/modprobe.d/lpvo_usb_gpib.conf" - * and /usr/local/etc/udev/rules.d/99-lpvo_usb_gpib.rules. - * - */ - -static const struct usb_device_id skel_table[] = { - { USB_DEVICE(0x0403, 0x6001) }, - { } /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, skel_table); - -/* - * *** Diagnostics and Debug *** - * To enable the diagnostic and debug messages either compile with DEBUG set - * or control via the dynamic debug mechanisms. - * The module parameter "debug" controls the sending of debug messages to - * syslog. By default it is set to 0 - * debug = 0: only attach/detach messages are sent - * 1: every action is logged - * 2: extended logging; each single exchanged byte is documented - * (about twice the log volume of [1]) - * To switch debug level: - * At module loading: modprobe lpvo_usb_gpib debug={0,1,2} - * On the fly: echo {0,1,2} > /sys/modules/lpvo_usb_gpib/parameters/debug - */ - -static int debug; -module_param(debug, int, 0644); - -#define DIA_LOG(level, format, ...) \ - do { if (debug >= (level)) \ - dev_dbg(board->gpib_dev, format, ## __VA_ARGS__); } \ - while (0) - -#define WQT wait_queue_entry_t -#define WQH head -#define WQE entry - -/* standard and extended command sets of the usb-gpib adapter */ - -#define USB_GPIB_ON "\nIB\n" -#define USB_GPIB_OFF "\nIBO\n" -#define USB_GPIB_IBm0 "\nIBm0\n" /* do not assert REN with IFC */ -#define USB_GPIB_IBm1 "\nIBm1\n" /* assert REN with IFC */ -#define USB_GPIB_IBCL "\nIBZ\n" -#define USB_GPIB_STATUS "\nIBS\n" -#define USB_GPIB_READ "\nIB?\n" -#define USB_GPIB_READ_1 "\nIBB\n" -#define USB_GPIB_EOI "\nIBe0\n" -#define USB_GPIB_FTMO "\nIBf0\n" /* disable first byte timeout */ -#define USB_GPIB_TTMOZ "\nIBt0\n" /* disable byte timeout */ - -/* incomplete commands */ - -#define USB_GPIB_BTMO "\nIBt" /* set byte timeout */ -#define USB_GPIB_TTMO "\nIBT" /* set total timeout */ - -#define USB_GPIB_DEBUG_ON "\nIBDE\xAA\n" -#define USB_GPIB_SET_LISTEN "\nIBDT0\n" -#define USB_GPIB_SET_TALK "\nIBDT1\n" -#define USB_GPIB_SET_LINES "\nIBDC.\n" -#define USB_GPIB_SET_DATA "\nIBDM.\n" -#define USB_GPIB_READ_LINES "\nIBD?C\n" -#define USB_GPIB_READ_DATA "\nIBD?M\n" -#define USB_GPIB_READ_BUS "\nIBD??\n" - -/* command sequences */ - -#define USB_GPIB_UNTALK "\nIBC_\n" -#define USB_GPIB_UNLISTEN "\nIBC?\n" - -/* special characters used by the adapter */ - -#define DLE ('\020') -#define STX ('\02') -#define ETX ('\03') -#define ACK ('\06') -#define NODATA ('\03') -#define NODAV ('\011') - -#define IB_BUS_REN 0x01 -#define IB_BUS_IFC 0x02 -#define IB_BUS_NDAC 0x04 -#define IB_BUS_NRFD 0x08 -#define IB_BUS_DAV 0x10 -#define IB_BUS_EOI 0x20 -#define IB_BUS_ATN 0x40 -#define IB_BUS_SRQ 0x80 - -#define INBUF_SIZE 128 - -struct char_buf { /* used by one_char() routine */ - char *inbuf; - int last; - int nchar; -}; - -struct usb_gpib_priv { /* private data to the device */ - u8 eos; /* eos character */ - short eos_flags; /* eos mode */ - int timeout; /* current value for timeout */ - void *dev; /* the usb device private data structure */ -}; - -#define GPIB_DEV (((struct usb_gpib_priv *)board->private_data)->dev) - -static void show_status(struct gpib_board *board) -{ - DIA_LOG(2, "# - buffer_length %d\n", board->buffer_length); - DIA_LOG(2, "# - status %lx\n", board->status); - DIA_LOG(2, "# - use_count %d\n", board->use_count); - DIA_LOG(2, "# - pad %x\n", board->pad); - DIA_LOG(2, "# - sad %x\n", board->sad); - DIA_LOG(2, "# - timeout %d\n", board->usec_timeout); - DIA_LOG(2, "# - ppc %d\n", board->parallel_poll_configuration); - DIA_LOG(2, "# - t1delay %d\n", board->t1_nano_sec); - DIA_LOG(2, "# - online %d\n", board->online); - DIA_LOG(2, "# - autopoll %d\n", board->autospollers); - DIA_LOG(2, "# - autopoll task %p\n", board->autospoll_task); - DIA_LOG(2, "# - minor %d\n", board->minor); - DIA_LOG(2, "# - master %d\n", board->master); - DIA_LOG(2, "# - list %d\n", board->ist); -} - -/* - * GLOBAL VARIABLES: required for - * pairing among gpib minor and usb minor. - * MAX_DEV is the max number of usb-gpib adapters; free - * to change as you like, but no more than 32 - */ - -#define MAX_DEV 8 -static struct usb_interface *lpvo_usb_interfaces[MAX_DEV]; /* registered interfaces */ -static int usb_minors[MAX_DEV]; /* usb minors */ -static int assigned_usb_minors; /* mask of filled slots */ -static struct mutex minors_lock; /* operations on usb_minors are to be protected */ - -/* - * usb-skeleton prototypes - */ - -struct usb_skel; -static ssize_t skel_do_write(struct usb_skel *, const char *, size_t); -static ssize_t skel_do_read(struct usb_skel *, char *, size_t); -static int skel_do_open(struct gpib_board *, int); -static int skel_do_release(struct gpib_board *); - -/* - * usec_diff : take difference in MICROsec between two 'timespec' - * (unix time in sec and NANOsec) - */ - -static inline int usec_diff(struct timespec64 *a, struct timespec64 *b) -{ - return ((a->tv_sec - b->tv_sec) * 1000000 + - (a->tv_nsec - b->tv_nsec) / 1000); -} - -/* - * *** these routines are specific to the usb-gpib adapter *** - */ - -/** - * write_loop() - Send a byte sequence to the adapter - * - * @dev: the private device structure - * @msg: the byte sequence. - * @leng: the byte sequence length. - * - */ - -static int write_loop(void *dev, char *msg, int leng) -{ - return skel_do_write(dev, msg, leng); -} - -/** - * send_command() - Send a byte sequence and return a single byte reply. - * - * @board: the gpib_board_struct data area for this gpib interface - * @msg: the byte sequence. - * @leng: the byte sequence length; can be given as zero and is - * computed automatically, but if 'msg' contains a zero byte, - * it has to be given explicitly. - */ - -static int send_command(struct gpib_board *board, char *msg, int leng) -{ - char buffer[64]; - int nchar; - int retval; - struct timespec64 before, after; - - ktime_get_real_ts64 (&before); - - if (!leng) - leng = strlen(msg); - retval = write_loop(GPIB_DEV, msg, leng); - if (retval < 0) - return retval; - - nchar = skel_do_read(GPIB_DEV, buffer, 64); - - if (nchar < 0) { - dev_err(board->gpib_dev, " return from read: %d\n", nchar); - return nchar; - } else if (nchar != 1) { - dev_err(board->gpib_dev, " Irregular reply to command: %s\n", msg); - return -EIO; - } - ktime_get_real_ts64 (&after); - - DIA_LOG(1, "Sent %d - done %d us.\n", leng, usec_diff(&after, &before)); - - return buffer[0] & 0xff; -} - -/* - * set_control_line() - Set the value of a single gpib control line - * - * @board: the gpib_board_struct data area for this gpib interface - * @line: line mask - * @value: line new value (0/1) - */ - -static int set_control_line(struct gpib_board *board, int line, int value) -{ - char msg[] = USB_GPIB_SET_LINES; - int retval; - int leng = strlen(msg); - - DIA_LOG(1, "setting line %x to %x\n", line, value); - - retval = send_command(board, USB_GPIB_READ_LINES, 0); - - DIA_LOG(1, "old line values: %x\n", retval); - - if (retval == -EIO) - return retval; - - msg[leng - 2] = value ? (retval & ~line) : retval | line; - - retval = send_command(board, msg, 0); - - DIA_LOG(1, "operation result: %x\n", retval); - - return retval; -} - -/* - * one_char() - read one single byte from input buffer - * - * @board: the gpib_board_struct data area for this gpib interface - * @char_buf: the routine private data structure - */ - -static int one_char(struct gpib_board *board, struct char_buf *b) -{ - struct timespec64 before, after; - - if (b->nchar) { - DIA_LOG(2, "-> %x\n", b->inbuf[b->last - b->nchar]); - return b->inbuf[b->last - b->nchar--]; - } - ktime_get_real_ts64 (&before); - b->nchar = skel_do_read(GPIB_DEV, b->inbuf, INBUF_SIZE); - b->last = b->nchar; - ktime_get_real_ts64 (&after); - - DIA_LOG(2, "read %d bytes in %d usec\n", - b->nchar, usec_diff(&after, &before)); - - if (b->nchar > 0) { - DIA_LOG(2, "--> %x\n", b->inbuf[b->last - b->nchar]); - return b->inbuf[b->last - b->nchar--]; - } - return -EIO; -} - -/** - * set_timeout() - set single byte / total timeouts on the adapter - * - * @board: the gpib_board_struct data area for this gpib interface - * - * For sake of speed, the operation is performed only if it - * modifies the current (saved) value. Minimum allowed timeout - * is 30 ms (T30ms -> 8); timeout disable (TNONE -> 0) currently - * not supported. - */ - -static void set_timeout(struct gpib_board *board) -{ - int n, val; - char command[sizeof(USB_GPIB_TTMO) + 6]; - struct usb_gpib_priv *data = board->private_data; - - if (data->timeout == board->usec_timeout) - return; - - n = (board->usec_timeout + 32767) / 32768; - if (n < 2) - n = 2; - - DIA_LOG(1, "Set timeout to %d us -> %d\n", board->usec_timeout, n); - - sprintf(command, "%s%d\n", USB_GPIB_BTMO, n > 255 ? 255 : n); - val = send_command(board, command, 0); - - if (val == ACK) { - if (n > 65535) - n = 65535; - sprintf(command, "%s%d\n", USB_GPIB_TTMO, n); - val = send_command(board, command, 0); - } - - if (val != ACK) - dev_err(board->gpib_dev, "error in timeout set: <%s>\n", command); - else - data->timeout = board->usec_timeout; -} - -/* - * now the standard interface functions - attach and detach - */ - -/** - * usb_gpib_attach() - activate the usb-gpib converter board - * - * @board: the gpib_board_struct data area for this gpib interface - * @config: firmware data, if any (from gpib_config -I <file>) - * - * The channel name is ttyUSBn, with n=0 by default. Other values for n - * passed with gpib_config -b <n>. - * - * In this routine I trust that when an error code is returned - * detach() will be called. Always. - */ - -static int usb_gpib_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - int retval, j; - u32 base = config->ibbase; - char *device_path; - int match; - struct usb_device *udev; - - DIA_LOG(0, "Board %p -t %s -m %d -a %p -u %d -l %d -b %d\n", - board, board->interface->name, board->minor, config->device_path, - config->pci_bus, config->pci_slot, base); - - board->private_data = NULL; /* to be sure - we can detach before setting */ - - /* identify device to be attached */ - - mutex_lock(&minors_lock); - - if (config->device_path) { - /* if config->device_path given, try that first */ - for (j = 0 ; j < MAX_DEV ; j++) { - if ((assigned_usb_minors & 1 << j) == 0) - continue; - udev = usb_get_dev(interface_to_usbdev(lpvo_usb_interfaces[j])); - device_path = kobject_get_path(&udev->dev.kobj, GFP_KERNEL); - match = gpib_match_device_path(&lpvo_usb_interfaces[j]->dev, - config->device_path); - DIA_LOG(1, "dev. %d: minor %d path: %s --> %d\n", j, - lpvo_usb_interfaces[j]->minor, device_path, match); - kfree(device_path); - if (match) - break; - } - } else if (config->pci_bus != -1 && config->pci_slot != -1) { - /* second: look for bus and slot */ - for (j = 0 ; j < MAX_DEV ; j++) { - if ((assigned_usb_minors & 1 << j) == 0) - continue; - udev = usb_get_dev(interface_to_usbdev(lpvo_usb_interfaces[j])); - DIA_LOG(1, "dev. %d: bus %d -> %d dev: %d -> %d\n", j, - udev->bus->busnum, config->pci_bus, udev->devnum, config->pci_slot); - if (config->pci_bus == udev->bus->busnum && - config->pci_slot == udev->devnum) - break; - } - } else { /* last chance: usb_minor, given as ibbase */ - for (j = 0 ; j < MAX_DEV ; j++) { - if (usb_minors[j] == base && assigned_usb_minors & 1 << j) - break; - } - } - mutex_unlock(&minors_lock); - - if (j == MAX_DEV) { - dev_err(board->gpib_dev, "Requested device is not registered.\n"); - return -EIO; - } - - board->private_data = kzalloc(sizeof(struct usb_gpib_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - - retval = skel_do_open(board, usb_minors[j]); - - DIA_LOG(1, "Skel open: %d\n", retval); - - if (retval) { - dev_err(board->gpib_dev, "skel open failed.\n"); - kfree(board->private_data); - board->private_data = NULL; - return -ENODEV; - } - - show_status(board); - - retval = send_command(board, USB_GPIB_ON, 0); - DIA_LOG(1, "USB_GPIB_ON returns %x\n", retval); - if (retval != ACK) - return -EIO; - - /* - * We must setup debug mode because we need the extended instruction - * set to cope with the Core (gpib_common) point of view - */ - - retval = send_command(board, USB_GPIB_DEBUG_ON, 0); - DIA_LOG(1, "USB_GPIB_DEBUG_ON returns %x\n", retval); - if (retval != ACK) - return -EIO; - - /* - * We must keep REN off after an IFC because so it is - * assumed by the Core - */ - - retval = send_command(board, USB_GPIB_IBm0, 0); - DIA_LOG(1, "USB_GPIB_IBm0 returns %x\n", retval); - if (retval != ACK) - return -EIO; - - retval = set_control_line(board, IB_BUS_REN, 0); - if (retval != ACK) - return -EIO; - - retval = send_command(board, USB_GPIB_FTMO, 0); - DIA_LOG(1, "USB_GPIB_FTMO returns %x\n", retval); - if (retval != ACK) - return -EIO; - - show_status(board); - DIA_LOG(0, "attached\n"); - return 0; -} - -/** - * usb_gpib_detach() - deactivate the usb-gpib converter board - * - * @board: the gpib_board data area for this gpib interface - * - */ - -static void usb_gpib_detach(struct gpib_board *board) -{ - int retval; - - show_status(board); - - DIA_LOG(0, "detaching\n"); - - if (board->private_data) { - if (GPIB_DEV) { - write_loop(GPIB_DEV, USB_GPIB_OFF, strlen(USB_GPIB_OFF)); - msleep(100); - DIA_LOG(1, "%s", "GPIB off\n"); - retval = skel_do_release(board); - DIA_LOG(1, "skel release -> %d\n", retval); - } - kfree(board->private_data); - board->private_data = NULL; - } - - DIA_LOG(0, "detached\n"); -} - -/* - * Other functions follow in alphabetical order - */ -/* command */ -static int usb_gpib_command(struct gpib_board *board, - u8 *buffer, - size_t length, - size_t *bytes_written) -{ - int i, retval; - char command[6] = "IBc.\n"; - - DIA_LOG(1, "enter %p\n", board); - - set_timeout(board); - - *bytes_written = 0; - for (i = 0 ; i < length ; i++) { - command[3] = buffer[i]; - retval = send_command(board, command, 5); - DIA_LOG(2, "%d ==> %x %x\n", i, buffer[i], retval); - if (retval != 0x06) - return retval; - ++(*bytes_written); - } - return 0; -} - -/** - * usb_gpib_disable_eos() - Disable END on eos byte (END on EOI only) - * - * @board: the gpib_board data area for this gpib interface - * - * With the lpvo adapter eos can only be handled via software. - * Cannot do nothing here, but remember for future use. - */ - -static void usb_gpib_disable_eos(struct gpib_board *board) -{ - ((struct usb_gpib_priv *)board->private_data)->eos_flags &= ~REOS; - DIA_LOG(1, "done: %x\n", - ((struct usb_gpib_priv *)board->private_data)->eos_flags); -} - -/** - * usb_gpib_enable_eos() - Enable END for reads when eos byte is received. - * - * @board: the gpib_board data area for this gpib interface - * @eos_byte: the 'eos' byte - * @compare_8_bits: if zero ignore eigthth bit when comparing - * - */ - -static int usb_gpib_enable_eos(struct gpib_board *board, - u8 eos_byte, - int compare_8_bits) -{ - struct usb_gpib_priv *pd = (struct usb_gpib_priv *)board->private_data; - - DIA_LOG(1, "enter with %x\n", eos_byte); - pd->eos = eos_byte; - pd->eos_flags = REOS; - if (compare_8_bits) - pd->eos_flags |= BIN; - return 0; -} - -/** - * usb_gpib_go_to_standby() - De-assert ATN - * - * @board: the gpib_board data area for this gpib interface - */ - -static int usb_gpib_go_to_standby(struct gpib_board *board) -{ - int retval = set_control_line(board, IB_BUS_ATN, 0); - - DIA_LOG(1, "done with %x\n", retval); - - if (retval == ACK) - return 0; - return -EIO; -} - -/** - * usb_gpib_interface_clear() - Assert or de-assert IFC - * - * @board: the gpib_board data area for this gpib interface - * @assert: 1: assert IFC; 0: de-assert IFC - * - * Currently on the assert request we issue the lpvo IBZ - * command that cycles IFC low for 100 usec, then we ignore - * the de-assert request. - */ - -static void usb_gpib_interface_clear(struct gpib_board *board, int assert) -{ - int retval = 0; - - DIA_LOG(1, "enter with %d\n", assert); - - if (assert) { - retval = send_command(board, USB_GPIB_IBCL, 0); - - set_bit(CIC_NUM, &board->status); - } - - DIA_LOG(1, "done with %d %d\n", assert, retval); -} - -/** - * usb_gpib_line_status() - Read the status of the bus lines. - * - * @board: the gpib_board data area for this gpib interface - * - * We can read all lines. - */ -static int usb_gpib_line_status(const struct gpib_board *board) -{ - int buffer; - int line_status = VALID_ALL; /* all lines will be read */ - struct list_head *p, *q; - WQT *item; - unsigned long flags; - int sleep = 0; - - DIA_LOG(1, "%s\n", "request"); - - /* - * if we are on the wait queue (board->wait), do not hurry - * reading status line; instead, pause a little - */ - - spin_lock_irqsave((spinlock_t *)&board->wait.lock, flags); - q = (struct list_head *)&board->wait.WQH; - list_for_each(p, q) { - item = container_of(p, WQT, WQE); - if (item->private == current) { - sleep = 20; - break; - } - /* pid is: ((struct task_struct *) item->private)->pid); */ - } - spin_unlock_irqrestore((spinlock_t *)&board->wait.lock, flags); - if (sleep) { - DIA_LOG(1, "we are on the wait queue - sleep %d ms\n", sleep); - msleep(sleep); - } - - buffer = send_command((struct gpib_board *)board, USB_GPIB_STATUS, 0); - - if (buffer < 0) { - dev_err(board->gpib_dev, "line status read failed with %d\n", buffer); - return -1; - } - - if ((buffer & 0x01) == 0) - line_status |= BUS_REN; - if ((buffer & 0x02) == 0) - line_status |= BUS_IFC; - if ((buffer & 0x04) == 0) - line_status |= BUS_NDAC; - if ((buffer & 0x08) == 0) - line_status |= BUS_NRFD; - if ((buffer & 0x10) == 0) - line_status |= BUS_DAV; - if ((buffer & 0x20) == 0) - line_status |= BUS_EOI; - if ((buffer & 0x40) == 0) - line_status |= BUS_ATN; - if ((buffer & 0x80) == 0) - line_status |= BUS_SRQ; - - DIA_LOG(1, "done with %x %x\n", buffer, line_status); - - return line_status; -} - -/* parallel_poll */ - -static int usb_gpib_parallel_poll(struct gpib_board *board, u8 *result) -{ - /* - * request parallel poll asserting ATN | EOI; - * we suppose ATN already asserted - */ - - int retval; - - DIA_LOG(1, "enter %p\n", board); - - retval = set_control_line(board, IB_BUS_EOI, 1); - if (retval != ACK) - return -EIO; - - *result = send_command(board, USB_GPIB_READ_DATA, 0); - - DIA_LOG(1, "done with %x\n", *result); - - retval = set_control_line(board, IB_BUS_EOI, 0); - if (retval != 0x06) - return -EIO; - - return 0; -} - -/* read */ - -static int usb_gpib_read(struct gpib_board *board, - u8 *buffer, - size_t length, - int *end, - size_t *bytes_read) -{ -#define MAX_READ_EXCESS 16384 - - struct char_buf b = {NULL, 0}; - - int retval; - char c, nc; - int ic; - struct timespec64 before, after; - int read_count = MAX_READ_EXCESS; - struct usb_gpib_priv *pd = (struct usb_gpib_priv *)board->private_data; - - DIA_LOG(1, "enter %p -> %zu\n", board, length); - - *bytes_read = 0; /* by default, things go wrong */ - *end = 0; - - set_timeout(board); - - /* single byte read has a special handling */ - - if (length == 1) { - char inbuf[2] = {0, 0}; - - /* read a single character */ - - ktime_get_real_ts64 (&before); - - retval = write_loop(GPIB_DEV, USB_GPIB_READ_1, strlen(USB_GPIB_READ_1)); - if (retval < 0) - return retval; - - retval = skel_do_read(GPIB_DEV, inbuf, 1); - retval += skel_do_read(GPIB_DEV, inbuf + 1, 1); - - ktime_get_real_ts64 (&after); - - DIA_LOG(1, "single read: %x %x %x in %d\n", retval, - inbuf[0], inbuf[1], - usec_diff(&after, &before)); - - /* good char / last char? */ - - if (retval == 2 && inbuf[1] == ACK) { - buffer[0] = inbuf[0]; - *bytes_read = 1; - return 0; - } - if (retval < 2) - return -EIO; - else - return -ETIME; - } - - /* allocate buffer for multibyte read */ - - b.inbuf = kmalloc(INBUF_SIZE, GFP_KERNEL); - if (!b.inbuf) - return -ENOMEM; - - /* send read command and check <DLE><STX> sequence */ - - retval = write_loop(GPIB_DEV, USB_GPIB_READ, strlen(USB_GPIB_READ)); - if (retval < 0) - goto read_return; - - if (one_char(board, &b) != DLE || one_char(board, &b) != STX) { - dev_err(board->gpib_dev, "wrong <DLE><STX> sequence\n"); - retval = -EIO; - goto read_return; - } - - /* get data flow */ - - while (1) { - ic = one_char(board, &b); - if (ic == -EIO) { - retval = -EIO; - goto read_return; - } - c = ic; - - if (c == DLE) - nc = one_char(board, &b); - if (c != DLE || nc == DLE) { - /* data byte - store into buffer */ - - if (*bytes_read == length) - break; /* data overflow */ - if (c == DLE) - c = nc; - buffer[(*bytes_read)++] = c; - if (c == pd->eos) { - *end = 1; - break; - } - - } else { - /* we are in the closing <DLE><ETX> sequence */ - c = nc; - if (c == ETX) { - c = one_char(board, &b); - if (c == ACK) { - *end = 1; - retval = 0; - goto read_return; - } else { - dev_err(board->gpib_dev, "wrong end of message %x", c); - retval = -ETIME; - goto read_return; - } - } else { - dev_err(board->gpib_dev, "lone <DLE> in stream"); - retval = -EIO; - goto read_return; - } - } - } - - /* we had a data overflow - flush excess data */ - - while (read_count--) { - if (one_char(board, &b) != DLE) - continue; - c = one_char(board, &b); - if (c == DLE) - continue; - if (c == ETX) { - c = one_char(board, &b); - if (c == ACK) { - if (MAX_READ_EXCESS - read_count > 1) - dev_dbg(board->gpib_dev, "small buffer - maybe some data lost"); - retval = 0; - goto read_return; - } - break; - } - } - - dev_err(board->gpib_dev, "no input end - board in odd state\n"); - retval = -EIO; - -read_return: - kfree(b.inbuf); - - DIA_LOG(1, "done with byte/status: %d %x %d\n", (int)*bytes_read, retval, *end); - - if (retval == 0 || retval == -ETIME) { - if (send_command(board, USB_GPIB_UNTALK, sizeof(USB_GPIB_UNTALK)) == 0x06) - return retval; - return -EIO; - } - - return retval; -} - -/* remote_enable */ - -static void usb_gpib_remote_enable(struct gpib_board *board, int enable) -{ - int retval; - - retval = set_control_line(board, IB_BUS_REN, enable ? 1 : 0); - if (retval != ACK) - dev_err(board->gpib_dev, "could not set REN line: %x\n", retval); - - DIA_LOG(1, "done with %x\n", retval); -} - -/* request_system_control */ - -static int usb_gpib_request_system_control(struct gpib_board *board, int request_control) -{ - if (!request_control) - return -EINVAL; - - DIA_LOG(1, "done with %d -> %lx\n", request_control, board->status); - return 0; -} - -/* take_control */ -/* beware: the sync flag is ignored; what is its real meaning? */ - -static int usb_gpib_take_control(struct gpib_board *board, int sync) -{ - int retval; - - retval = set_control_line(board, IB_BUS_ATN, 1); - - DIA_LOG(1, "done with %d %x\n", sync, retval); - - if (retval == ACK) - return 0; - return -EIO; -} - -/* update_status */ - -static unsigned int usb_gpib_update_status(struct gpib_board *board, - unsigned int clear_mask) -{ - /* There is nothing we can do here, I guess */ - - board->status &= ~clear_mask; - - DIA_LOG(1, "done with %x %lx\n", clear_mask, board->status); - - return board->status; -} - -/* write */ -/* beware: DLE characters are not escaped - can only send ASCII data */ - -static int usb_gpib_write(struct gpib_board *board, - u8 *buffer, - size_t length, - int send_eoi, - size_t *bytes_written) -{ - int retval; - char *msg; - - DIA_LOG(1, "enter %p -> %zu\n", board, length); - - set_timeout(board); - - msg = kmalloc(length + 8, GFP_KERNEL); - if (!msg) - return -ENOMEM; - - memcpy(msg, "\nIB\020\002", 5); - memcpy(msg + 5, buffer, length); - memcpy(msg + 5 + length, "\020\003\n", 3); - - retval = send_command(board, msg, length + 8); - kfree(msg); - - DIA_LOG(1, "<%.*s> -> %x\n", (int)length, buffer, retval); - - if (retval != ACK) - return -EPIPE; - - *bytes_written = length; - - if (send_command(board, USB_GPIB_UNLISTEN, sizeof(USB_GPIB_UNLISTEN)) != 0x06) - return -EPIPE; - - return length; -} - -/* - * *** following functions not implemented yet *** - */ - -/* parallel_poll configure */ - -static void usb_gpib_parallel_poll_configure(struct gpib_board *board, - u8 configuration) -{ -} - -/* parallel_poll_response */ - -static void usb_gpib_parallel_poll_response(struct gpib_board *board, int ist) -{ -} - -/* primary_address */ - -static int usb_gpib_primary_address(struct gpib_board *board, unsigned int address) -{ - return 0; -} - -/* return_to_local */ - -static void usb_gpib_return_to_local(struct gpib_board *board) -{ -} - -/* secondary_address */ - -static int usb_gpib_secondary_address(struct gpib_board *board, - unsigned int address, - int enable) -{ - return 0; -} - -/* serial_poll_response */ - -static void usb_gpib_serial_poll_response(struct gpib_board *board, u8 status) -{ -} - -/* serial_poll_status */ - -static u8 usb_gpib_serial_poll_status(struct gpib_board *board) -{ - return 0; -} - -/* t1_delay */ - -static int usb_gpib_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - return 0; -} - -/* - * *** module dispatch table and init/exit functions *** - */ - -static struct gpib_interface usb_gpib_interface = { - .name = NAME, - .attach = usb_gpib_attach, - .detach = usb_gpib_detach, - .read = usb_gpib_read, - .write = usb_gpib_write, - .command = usb_gpib_command, - .take_control = usb_gpib_take_control, - .go_to_standby = usb_gpib_go_to_standby, - .request_system_control = usb_gpib_request_system_control, - .interface_clear = usb_gpib_interface_clear, - .remote_enable = usb_gpib_remote_enable, - .enable_eos = usb_gpib_enable_eos, - .disable_eos = usb_gpib_disable_eos, - .parallel_poll = usb_gpib_parallel_poll, - .parallel_poll_configure = usb_gpib_parallel_poll_configure, - .parallel_poll_response = usb_gpib_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = usb_gpib_line_status, - .update_status = usb_gpib_update_status, - .primary_address = usb_gpib_primary_address, - .secondary_address = usb_gpib_secondary_address, - .serial_poll_response = usb_gpib_serial_poll_response, - .serial_poll_status = usb_gpib_serial_poll_status, - .t1_delay = usb_gpib_t1_delay, - .return_to_local = usb_gpib_return_to_local, - .skip_check_for_command_acceptors = 1 -}; - -/* - * usb_gpib_init_module(), usb_gpib_exit_module() - * - * This functions are called every time a new device is detected - * and registered or is removed and unregistered. - * We must take note of created and destroyed usb minors to be used - * when usb_gpib_attach() and usb_gpib_detach() will be called on - * request by gpib_config. - */ - -static int usb_gpib_init_module(struct usb_interface *interface) -{ - int j, mask, rv; - - rv = mutex_lock_interruptible(&minors_lock); - if (rv < 0) - return rv; - - if (!assigned_usb_minors) { - rv = gpib_register_driver(&usb_gpib_interface, THIS_MODULE); - if (rv) { - pr_err("gpib_register_driver failed: error = %d\n", rv); - goto exit; - } - } else { - /* - * check if minor is already registered - maybe useless, but if - * it happens the code is inconsistent somewhere - */ - - for (j = 0 ; j < MAX_DEV ; j++) { - if (usb_minors[j] == interface->minor && assigned_usb_minors & 1 << j) { - pr_err("CODE BUG: USB minor %d registered at %d.\n", - interface->minor, j); - rv = -1; - goto exit; - } - } - } - - /* find a free slot */ - - for (j = 0 ; j < MAX_DEV ; j++) { - mask = 1 << j; - if ((assigned_usb_minors & mask) == 0) { - usb_minors[j] = interface->minor; - lpvo_usb_interfaces[j] = interface; - assigned_usb_minors |= mask; - rv = 0; - goto exit; - } - } - pr_err("No slot available for interface %p minor %d\n", interface, interface->minor); - rv = -1; - -exit: - mutex_unlock(&minors_lock); - return rv; -} - -static void usb_gpib_exit_module(int minor) -{ - int j; - - mutex_lock(&minors_lock); - for (j = 0 ; j < MAX_DEV ; j++) { - if (usb_minors[j] == minor && assigned_usb_minors & 1 << j) { - assigned_usb_minors &= ~(1 << j); - usb_minors[j] = -1; - if (assigned_usb_minors == 0) - gpib_unregister_driver(&usb_gpib_interface); - goto exit; - } - } - pr_err("CODE BUG: USB minor %d not found.\n", minor); - -exit: - mutex_unlock(&minors_lock); -} - -/* - * Default latency time (16 msec) is too long. - * We must use 1 msec (best); anyhow, no more than 5 msec. - * - * Defines and function taken and modified from the kernel tree - * (see ftdi_sio.h and ftdi_sio.c). - */ - -#define FTDI_SIO_SET_LATENCY_TIMER 9 /* Set the latency timer */ -#define FTDI_SIO_SET_LATENCY_TIMER_REQUEST FTDI_SIO_SET_LATENCY_TIMER -#define FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE 0x40 -#define WDR_TIMEOUT 5000 /* default urb timeout */ -#define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ - -#define LATENCY_TIMER 1 /* use a small latency timer: 1 ... 5 msec */ -#define LATENCY_CHANNEL 0 /* channel selection in multichannel devices */ -static int write_latency_timer(struct usb_device *udev) -{ - int rv = usb_control_msg(udev, - usb_sndctrlpipe(udev, 0), - FTDI_SIO_SET_LATENCY_TIMER_REQUEST, - FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, - LATENCY_TIMER, LATENCY_CHANNEL, - NULL, 0, WDR_TIMEOUT); - if (rv < 0) - dev_err(&udev->dev, "Unable to write latency timer: %i\n", rv); - return rv; -} - -/***************************************************************************** - * * - * The following code is a modified version of the USB Skeleton driver * - * written by Greg Kroah-Hartman and available in the kernel tree. * - * * - * Functions skel_open() and skel_release() have been rewritten and named * - * skel_do_open() and skel_do_release() to process the attach and detach * - * requests coming from gpib_config. * - * * - * Functions skel_read() and skel_write() have been split into a * - * skel_do_read() and skel_do_write(), that cover the kernel stuff of read * - * and write operations, and the original skel_read() and skel_write(), * - * that handle communication with user space and call their _do_ companion. * - * * - * Only the _do_ versions are used by the lpvo_usb_gpib driver; other ones * - * can be (optionally) maintained in the compilation to have direct access * - * to a gpib controller for debug and diagnostics. * - * * - * To avoid collisions in names, devices in user space have been renamed * - * lpvo_raw1, lpvo_raw2 .... and the usb driver has been renamed with the * - * gpib module name. * - * * - *****************************************************************************/ - -/* - * USB Skeleton driver - 2.2 - * - * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) - * - * This driver is based on the 2.6.3 version of drivers/usb/usb-skeleton.c - * but has been rewritten to be easier to read and use. - */ - -#include <linux/errno.h> -#include <linux/kref.h> -#include <linux/uaccess.h> -#include <linux/mutex.h> - -/* Get a minor range for your devices from the usb maintainer */ -#define USB_SKEL_MINOR_BASE 192 - -/* private defines */ - -#define MAX_TRANSFER (PAGE_SIZE - 512) -/* - * MAX_TRANSFER is chosen so that the VM is not stressed by - * allocations > PAGE_SIZE and the number of packets in a page - * is an integer 512 is the largest possible packet on EHCI - */ - -#define WRITES_IN_FLIGHT 1 /* we do not want more than one pending write */ -#define USER_DEVICE 1 /* compile for device(s) in user space */ - -/* Structure to hold all of our device specific stuff */ -struct usb_skel { - struct usb_device *udev; /* the usb device for this device */ - struct usb_interface *interface; /* the interface for this device */ - struct semaphore limit_sem; /* limiting the number of writes in progress */ - struct usb_anchor submitted; /* in case need to retract our submissions */ - struct urb *bulk_in_urb; /* the urb to read data with */ - unsigned char *bulk_in_buffer; /* the buffer to receive data */ - size_t bulk_in_size; /* the size of the receive buffer */ - size_t bulk_in_filled; /* number of bytes in the buffer */ - size_t bulk_in_copied; /* already copied to user space */ - __u8 bulk_in_endpoint_addr; /* the address of the bulk in endpoint */ - __u8 bulk_out_endpoint_addr; /* the address of the bulk out endpoint */ - int errors; /* the last request tanked */ - bool ongoing_read; /* a read is going on */ - spinlock_t err_lock; /* lock for errors */ - struct kref kref; - struct mutex io_mutex; /* synchronize I/O with disconnect */ - wait_queue_head_t bulk_in_wait; /* to wait for an ongoing read */ -}; - -#define to_skel_dev(d) container_of(d, struct usb_skel, kref) - -static struct usb_driver skel_driver; -static void skel_draw_down(struct usb_skel *dev); - -static void skel_delete(struct kref *kref) -{ - struct usb_skel *dev = to_skel_dev(kref); - - usb_free_urb(dev->bulk_in_urb); - usb_put_dev(dev->udev); - kfree(dev->bulk_in_buffer); - kfree(dev); -} - -/* - * skel_do_open() - to be called by usb_gpib_attach - */ - -static int skel_do_open(struct gpib_board *board, int subminor) -{ - struct usb_skel *dev; - struct usb_interface *interface; - int retval = 0; - - interface = usb_find_interface(&skel_driver, subminor); - if (!interface) { - dev_err(board->gpib_dev, "can't find device for minor %d\n", subminor); - retval = -ENODEV; - goto exit; - } - - dev = usb_get_intfdata(interface); - if (!dev) { - retval = -ENODEV; - goto exit; - } - - retval = usb_autopm_get_interface(interface); - if (retval) - goto exit; - - /* increment our usage count for the device */ - kref_get(&dev->kref); - - /* save our object in the file's private structure */ - GPIB_DEV = dev; - -exit: - return retval; -} - -/* - * skel_do_release() - to be called by usb_gpib_detach - */ - -static int skel_do_release(struct gpib_board *board) -{ - struct usb_skel *dev; - - dev = GPIB_DEV; - if (!dev) - return -ENODEV; - - /* allow the device to be autosuspended */ - mutex_lock(&dev->io_mutex); - if (dev->interface) - usb_autopm_put_interface(dev->interface); - mutex_unlock(&dev->io_mutex); - - /* decrement the count on our device */ - kref_put(&dev->kref, skel_delete); - return 0; -} - -/* - * read functions - */ - -static void skel_read_bulk_callback(struct urb *urb) -{ - struct usb_skel *dev; - unsigned long flags; - - dev = urb->context; - - spin_lock_irqsave(&dev->err_lock, flags); - /* sync/async unlink faults aren't errors */ - if (urb->status) { - if (!(urb->status == -ENOENT || - urb->status == -ECONNRESET || - urb->status == -ESHUTDOWN)) - dev_err(&dev->interface->dev, "nonzero read bulk status received: %d\n", - urb->status); - - dev->errors = urb->status; - } else { - dev->bulk_in_filled = urb->actual_length; - } - dev->ongoing_read = 0; - spin_unlock_irqrestore(&dev->err_lock, flags); - - wake_up_interruptible(&dev->bulk_in_wait); -} - -static int skel_do_read_io(struct usb_skel *dev, size_t count) -{ - int rv; - - /* prepare a read */ - usb_fill_bulk_urb(dev->bulk_in_urb, - dev->udev, - usb_rcvbulkpipe(dev->udev, - dev->bulk_in_endpoint_addr), - dev->bulk_in_buffer, - min(dev->bulk_in_size, count), - skel_read_bulk_callback, - dev); - /* tell everybody to leave the URB alone */ - spin_lock_irq(&dev->err_lock); - dev->ongoing_read = 1; - spin_unlock_irq(&dev->err_lock); - - /* submit bulk in urb, which means no data to deliver */ - dev->bulk_in_filled = 0; - dev->bulk_in_copied = 0; - - /* do it */ - rv = usb_submit_urb(dev->bulk_in_urb, GFP_KERNEL); - if (rv < 0) { - dev_err(&dev->interface->dev, "failed submitting read urb, error %d\n", rv); - rv = (rv == -ENOMEM) ? rv : -EIO; - spin_lock_irq(&dev->err_lock); - dev->ongoing_read = 0; - spin_unlock_irq(&dev->err_lock); - } - - return rv; -} - -/* - * skel_do_read() - read operations from lpvo_usb_gpib - */ - -static ssize_t skel_do_read(struct usb_skel *dev, char *buffer, size_t count) -{ - int rv; - bool ongoing_io; - - /* if we cannot read at all, return EOF */ - - if (!dev->bulk_in_urb || !count) - return 0; - -restart: /* added to comply with ftdi timeout technique */ - - /* no concurrent readers */ - - rv = mutex_lock_interruptible(&dev->io_mutex); - if (rv < 0) - return rv; - - if (!dev->interface) { /* disconnect() was called */ - rv = -ENODEV; - goto exit; - } - -retry: - /* if IO is under way, we must not touch things */ - spin_lock_irq(&dev->err_lock); - ongoing_io = dev->ongoing_read; - spin_unlock_irq(&dev->err_lock); - - if (ongoing_io) { -// /* nonblocking IO shall not wait */ -// /* no file, no O_NONBLOCK; maybe provide when from user space */ -// if (file->f_flags & O_NONBLOCK) { -// rv = -EAGAIN; -// goto exit; -// } - - /* - * IO may take forever - * hence wait in an interruptible state - */ - rv = wait_event_interruptible(dev->bulk_in_wait, (!dev->ongoing_read)); - if (rv < 0) - goto exit; - } - - /* errors must be reported */ - rv = dev->errors; - if (rv < 0) { - /* any error is reported once */ - dev->errors = 0; - /* to preserve notifications about reset */ - rv = (rv == -EPIPE) ? rv : -EIO; - /* report it */ - goto exit; - } - - /* - * if the buffer is filled we may satisfy the read - * else we need to start IO - */ - - if (dev->bulk_in_filled) { - /* we had read data */ - - size_t available = dev->bulk_in_filled - dev->bulk_in_copied; -// size_t chunk = min(available, count); /* compute chunk later */ - size_t chunk; - - if (!available) { - /* - * all data has been used - * actual IO needs to be done - */ - /* - * it seems that requests for less than dev->bulk_in_size - * are not accepted - */ - rv = skel_do_read_io(dev, dev->bulk_in_size); - if (rv < 0) - goto exit; - else - goto retry; - } - - /* - * data is available - chunk tells us how much shall be copied - */ - - /* - * Condition dev->bulk_in_copied > 0 maybe will never happen. In case, - * signal the event and copy using the original procedure, i.e., copy - * first two bytes also - */ - - if (dev->bulk_in_copied) { - chunk = min(available, count); - memcpy(buffer, dev->bulk_in_buffer + dev->bulk_in_copied, chunk); - rv = chunk; - dev->bulk_in_copied += chunk; - - /* copy discarding first two bytes that contain ftdi chip status */ - - } else { - /* account for two bytes to be discarded */ - chunk = min(available, count + 2); - if (chunk < 2) { - dev_err(&dev->udev->dev, "BAD READ - chunk: %zu\n", chunk); - rv = -EIO; - goto exit; - } - - memcpy(buffer, dev->bulk_in_buffer + 2, chunk - 2); - rv = chunk; - dev->bulk_in_copied += chunk; - } - - /* - * if we are asked for more than we have, - * we start IO but don't wait - * - * No, no read ahead allowed; if the case, more data will be - * asked for by the lpvo_usb_gpib layer. - */ -// if (available < count) -// skel_do_read_io(dev, dev->bulk_in_size); - } else { - /* no data in the buffer */ - rv = skel_do_read_io(dev, dev->bulk_in_size); - if (rv < 0) - goto exit; - else - goto retry; - } -exit: - mutex_unlock(&dev->io_mutex); - if (rv == 2) - goto restart; /* ftdi chip returns two status bytes after a latency anyhow */ - - if (rv > 0) - return rv - 2; /* account for 2 discarded bytes in a valid buffer */ - return rv; -} - -/* - * write functions - */ - -static void skel_write_bulk_callback(struct urb *urb) -{ - struct usb_skel *dev; - unsigned long flags; - - dev = urb->context; - - /* sync/async unlink faults aren't errors */ - if (urb->status) { - if (!(urb->status == -ENOENT || - urb->status == -ECONNRESET || - urb->status == -ESHUTDOWN)) - dev_err(&dev->interface->dev, - "nonzero write bulk status received: %d\n", urb->status); - - spin_lock_irqsave(&dev->err_lock, flags); - dev->errors = urb->status; - spin_unlock_irqrestore(&dev->err_lock, flags); - } - - /* free up our allocated buffer */ - usb_free_coherent(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); - up(&dev->limit_sem); -} - -/* - * skel_do_write() - write operations from lpvo_usb_gpib - */ - -static ssize_t skel_do_write(struct usb_skel *dev, const char *buffer, size_t count) -{ - int retval = 0; - struct urb *urb = NULL; - char *buf = NULL; - size_t writesize = min_t(size_t, count, (size_t)MAX_TRANSFER); - - /* verify that we actually have some data to write */ - if (count == 0) - goto exit; - - /* - * limit the number of URBs in flight to stop a user from using up all - * RAM - */ - /* Only one URB is used, because we can't have a pending write() and go on */ - -// if (!(file->f_flags & O_NONBLOCK)) { /* no NONBLOCK provided */ - if (down_interruptible(&dev->limit_sem)) { - retval = -ERESTARTSYS; - goto exit; - } -// } else { -// if (down_trylock(&dev->limit_sem)) { -// retval = -EAGAIN; -// goto exit; -// } -// } - - spin_lock_irq(&dev->err_lock); - retval = dev->errors; - if (retval < 0) { - /* any error is reported once */ - dev->errors = 0; - /* to preserve notifications about reset */ - retval = (retval == -EPIPE) ? retval : -EIO; - } - spin_unlock_irq(&dev->err_lock); - if (retval < 0) - goto error; - - /* create a urb, and a buffer for it, and copy the data to the urb */ - urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - retval = -ENOMEM; - goto error; - } - - buf = usb_alloc_coherent(dev->udev, writesize, GFP_KERNEL, - &urb->transfer_dma); - if (!buf) { - retval = -ENOMEM; - goto error; - } - - memcpy(buf, buffer, count); - - /* this lock makes sure we don't submit URBs to gone devices */ - mutex_lock(&dev->io_mutex); - if (!dev->interface) { /* disconnect() was called */ - mutex_unlock(&dev->io_mutex); - retval = -ENODEV; - goto error; - } - - /* initialize the urb properly */ - usb_fill_bulk_urb(urb, dev->udev, - usb_sndbulkpipe(dev->udev, dev->bulk_out_endpoint_addr), - buf, writesize, skel_write_bulk_callback, dev); - urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; - usb_anchor_urb(urb, &dev->submitted); - - /* send the data out the bulk port */ - retval = usb_submit_urb(urb, GFP_KERNEL); - mutex_unlock(&dev->io_mutex); - if (retval) { - dev_err(&dev->interface->dev, "failed submitting write urb, error %d\n", retval); - goto error_unanchor; - } - - /* - * release our reference to this urb, the USB core will eventually free - * it entirely - */ - usb_free_urb(urb); - - return writesize; - -error_unanchor: - usb_unanchor_urb(urb); -error: - if (urb) { - usb_free_coherent(dev->udev, writesize, buf, urb->transfer_dma); - usb_free_urb(urb); - } - up(&dev->limit_sem); - -exit: - return retval; -} - -/* - * services for the user space devices - */ - -#if USER_DEVICE /* conditional compilation of user space device */ - -static int skel_flush(struct file *file, fl_owner_t id) -{ - struct usb_skel *dev; - int res; - - dev = file->private_data; - if (!dev) - return -ENODEV; - - /* wait for io to stop */ - mutex_lock(&dev->io_mutex); - skel_draw_down(dev); - - /* read out errors, leave subsequent opens a clean slate */ - spin_lock_irq(&dev->err_lock); - res = dev->errors ? (dev->errors == -EPIPE ? -EPIPE : -EIO) : 0; - dev->errors = 0; - spin_unlock_irq(&dev->err_lock); - - mutex_unlock(&dev->io_mutex); - - return res; -} - -static int skel_open(struct inode *inode, struct file *file) -{ - struct usb_skel *dev; - struct usb_interface *interface; - int subminor; - int retval = 0; - - subminor = iminor(inode); - - interface = usb_find_interface(&skel_driver, subminor); - if (!interface) { - pr_err("can't find device for minor %d\n", subminor); - retval = -ENODEV; - goto exit; - } - - dev = usb_get_intfdata(interface); - if (!dev) { - retval = -ENODEV; - goto exit; - } - - retval = usb_autopm_get_interface(interface); - if (retval) - goto exit; - - /* increment our usage count for the device */ - kref_get(&dev->kref); - - /* save our object in the file's private structure */ - file->private_data = dev; - -exit: - return retval; -} - -static int skel_release(struct inode *inode, struct file *file) -{ - struct usb_skel *dev; - - dev = file->private_data; - if (!dev) - return -ENODEV; - - /* allow the device to be autosuspended */ - mutex_lock(&dev->io_mutex); - if (dev->interface) - usb_autopm_put_interface(dev->interface); - mutex_unlock(&dev->io_mutex); - - /* decrement the count on our device */ - kref_put(&dev->kref, skel_delete); - return 0; -} - -/* - * user space access to read function - */ - -static ssize_t skel_read(struct file *file, char __user *buffer, size_t count, - loff_t *ppos) -{ - struct usb_skel *dev; - char *buf; - ssize_t rv; - - dev = file->private_data; - - buf = kmalloc(count, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - rv = skel_do_read(dev, buf, count); - - if (rv > 0) { - if (copy_to_user(buffer, buf, rv)) { - kfree(buf); - return -EFAULT; - } - } - kfree(buf); - return rv; -} - -/* - * user space access to write function - */ - -static ssize_t skel_write(struct file *file, const char __user *user_buffer, - size_t count, loff_t *ppos) -{ - struct usb_skel *dev; - char *buf; - ssize_t rv; - - dev = file->private_data; - - buf = kmalloc(count, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - if (copy_from_user(buf, user_buffer, count)) { - kfree(buf); - return -EFAULT; - } - - rv = skel_do_write(dev, buf, count); - kfree(buf); - return rv; -} -#endif - -static const struct file_operations skel_fops = { - .owner = THIS_MODULE, -#if USER_DEVICE - .read = skel_read, - .write = skel_write, - .open = skel_open, - .release = skel_release, - .flush = skel_flush, - .llseek = noop_llseek, -#endif -}; - -/* - * usb class driver info in order to get a minor number from the usb core, - * and to have the device registered with the driver core - */ -#if USER_DEVICE -static struct usb_class_driver skel_class = { - .name = "lpvo_raw%d", - .fops = &skel_fops, - .minor_base = USB_SKEL_MINOR_BASE, -}; -#endif - -static int skel_probe(struct usb_interface *interface, - const struct usb_device_id *id) -{ - struct usb_skel *dev; - struct usb_endpoint_descriptor *bulk_in, *bulk_out; - int retval; - char *device_path; - - mutex_init(&minors_lock); /* required for handling minor numbers table */ - - /* allocate memory for our device state and initialize it */ - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - kref_init(&dev->kref); - sema_init(&dev->limit_sem, WRITES_IN_FLIGHT); - mutex_init(&dev->io_mutex); - spin_lock_init(&dev->err_lock); - init_usb_anchor(&dev->submitted); - init_waitqueue_head(&dev->bulk_in_wait); - - dev->udev = usb_get_dev(interface_to_usbdev(interface)); - dev->interface = interface; - - /* set up the endpoint information */ - /* use only the first bulk-in and bulk-out endpoints */ - retval = usb_find_common_endpoints(interface->cur_altsetting, - &bulk_in, &bulk_out, NULL, NULL); - if (retval) { - dev_err(&interface->dev, - "Could not find both bulk-in and bulk-out endpoints\n"); - goto error; - } - - dev->bulk_in_size = usb_endpoint_maxp(bulk_in); - dev->bulk_in_endpoint_addr = bulk_in->bEndpointAddress; - dev->bulk_in_buffer = kmalloc(dev->bulk_in_size, GFP_KERNEL); - if (!dev->bulk_in_buffer) { - retval = -ENOMEM; - goto error; - } - dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->bulk_in_urb) { - retval = -ENOMEM; - goto error; - } - - dev->bulk_out_endpoint_addr = bulk_out->bEndpointAddress; - - /* save our data pointer in this interface device */ - usb_set_intfdata(interface, dev); - - /* let the world know */ - - device_path = kobject_get_path(&dev->udev->dev.kobj, GFP_KERNEL); - dev_dbg(&interface->dev, "New lpvo_usb_device -> bus: %d dev: %d path: %s\n", - dev->udev->bus->busnum, dev->udev->devnum, device_path); - kfree(device_path); - -#if USER_DEVICE - /* we can register the device now, as it is ready */ - retval = usb_register_dev(interface, &skel_class); - if (retval) { - /* something prevented us from registering this driver */ - dev_err(&interface->dev, - "Not able to get a minor for this device.\n"); - usb_set_intfdata(interface, NULL); - goto error; - } -#endif - - write_latency_timer(dev->udev); /* adjust the latency timer */ - - usb_gpib_init_module(interface); /* last, init the lpvo for this minor */ - - return 0; - -error: - /* this frees allocated memory */ - kref_put(&dev->kref, skel_delete); - - return retval; -} - -static void skel_disconnect(struct usb_interface *interface) -{ - struct usb_skel *dev; - int minor = interface->minor; - - usb_gpib_exit_module(minor); /* first, disactivate the lpvo */ - - dev = usb_get_intfdata(interface); - usb_set_intfdata(interface, NULL); - -#if USER_DEVICE - /* give back our minor */ - usb_deregister_dev(interface, &skel_class); -#endif - - /* prevent more I/O from starting */ - mutex_lock(&dev->io_mutex); - dev->interface = NULL; - mutex_unlock(&dev->io_mutex); - - usb_kill_anchored_urbs(&dev->submitted); - - /* decrement our usage count */ - kref_put(&dev->kref, skel_delete); -} - -static void skel_draw_down(struct usb_skel *dev) -{ - int time; - - time = usb_wait_anchor_empty_timeout(&dev->submitted, 1000); - if (!time) - usb_kill_anchored_urbs(&dev->submitted); - usb_kill_urb(dev->bulk_in_urb); -} - -static int skel_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct usb_skel *dev = usb_get_intfdata(intf); - - if (!dev) - return 0; - skel_draw_down(dev); - return 0; -} - -static int skel_resume(struct usb_interface *intf) -{ - return 0; -} - -static int skel_pre_reset(struct usb_interface *intf) -{ - struct usb_skel *dev = usb_get_intfdata(intf); - - mutex_lock(&dev->io_mutex); - skel_draw_down(dev); - - return 0; -} - -static int skel_post_reset(struct usb_interface *intf) -{ - struct usb_skel *dev = usb_get_intfdata(intf); - - /* we are sure no URBs are active - no locking needed */ - dev->errors = -EPIPE; - mutex_unlock(&dev->io_mutex); - - return 0; -} - -static struct usb_driver skel_driver = { - .name = NAME, - .probe = skel_probe, - .disconnect = skel_disconnect, - .suspend = skel_suspend, - .resume = skel_resume, - .pre_reset = skel_pre_reset, - .post_reset = skel_post_reset, - .id_table = skel_table, - .supports_autosuspend = 1, -}; - -module_usb_driver(skel_driver); diff --git a/drivers/staging/gpib/nec7210/Makefile b/drivers/staging/gpib/nec7210/Makefile deleted file mode 100644 index 64330f2e89d1..000000000000 --- a/drivers/staging/gpib/nec7210/Makefile +++ /dev/null @@ -1,4 +0,0 @@ - -obj-$(CONFIG_GPIB_NEC7210) += nec7210.o - - diff --git a/drivers/staging/gpib/nec7210/board.h b/drivers/staging/gpib/nec7210/board.h deleted file mode 100644 index ac3fe38ade57..000000000000 --- a/drivers/staging/gpib/nec7210/board.h +++ /dev/null @@ -1,19 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_PCIIA_BOARD_H -#define _GPIB_PCIIA_BOARD_H - -#include "gpibP.h" -#include <linux/io.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/delay.h> - -#include "nec7210.h" - -#endif //_GPIB_PCIIA_BOARD_H - diff --git a/drivers/staging/gpib/nec7210/nec7210.c b/drivers/staging/gpib/nec7210/nec7210.c deleted file mode 100644 index bbf39367f5e4..000000000000 --- a/drivers/staging/gpib/nec7210/nec7210.c +++ /dev/null @@ -1,1121 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define dev_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include "board.h" -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <asm/dma.h> -#include <linux/bitops.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/delay.h> - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB library code for NEC uPD7210"); - -int nec7210_enable_eos(struct gpib_board *board, struct nec7210_priv *priv, u8 eos_byte, - int compare_8_bits) -{ - write_byte(priv, eos_byte, EOSR); - priv->auxa_bits |= HR_REOS; - if (compare_8_bits) - priv->auxa_bits |= HR_BIN; - else - priv->auxa_bits &= ~HR_BIN; - write_byte(priv, priv->auxa_bits, AUXMR); - return 0; -} -EXPORT_SYMBOL(nec7210_enable_eos); - -void nec7210_disable_eos(struct gpib_board *board, struct nec7210_priv *priv) -{ - priv->auxa_bits &= ~HR_REOS; - write_byte(priv, priv->auxa_bits, AUXMR); -} -EXPORT_SYMBOL(nec7210_disable_eos); - -int nec7210_parallel_poll(struct gpib_board *board, struct nec7210_priv *priv, u8 *result) -{ - int ret; - - clear_bit(COMMAND_READY_BN, &priv->state); - - // execute parallel poll - write_byte(priv, AUX_EPP, AUXMR); - // wait for result FIXME: support timeouts - ret = wait_event_interruptible(board->wait, test_bit(COMMAND_READY_BN, &priv->state)); - if (ret) { - dev_dbg(board->gpib_dev, "gpib: parallel poll interrupted\n"); - return -ERESTARTSYS; - } - *result = read_byte(priv, CPTR); - - return 0; -} -EXPORT_SYMBOL(nec7210_parallel_poll); - -void nec7210_parallel_poll_configure(struct gpib_board *board, - struct nec7210_priv *priv, unsigned int configuration) -{ - write_byte(priv, PPR | configuration, AUXMR); -} -EXPORT_SYMBOL(nec7210_parallel_poll_configure); - -void nec7210_parallel_poll_response(struct gpib_board *board, struct nec7210_priv *priv, int ist) -{ - if (ist) - write_byte(priv, AUX_SPPF, AUXMR); - else - write_byte(priv, AUX_CPPF, AUXMR); -} -EXPORT_SYMBOL(nec7210_parallel_poll_response); -/* - * This is really only adequate for chips that do a 488.2 style reqt/reqf - * based on bit 6 of the SPMR (see chapter 11.3.3 of 488.2). For simpler chips that simply - * set rsv directly based on bit 6, we either need to do more hardware setup to expose - * the 488.2 capability (for example with NI chips), or we need to implement the - * 488.2 set srv state machine in the driver (if that is even viable). - */ -void nec7210_serial_poll_response(struct gpib_board *board, - struct nec7210_priv *priv, u8 status) -{ - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - if (status & request_service_bit) { - priv->srq_pending = 1; - clear_bit(SPOLL_NUM, &board->status); - - } else { - priv->srq_pending = 0; - } - write_byte(priv, status, SPMR); - spin_unlock_irqrestore(&board->spinlock, flags); -} -EXPORT_SYMBOL(nec7210_serial_poll_response); - -u8 nec7210_serial_poll_status(struct gpib_board *board, struct nec7210_priv *priv) -{ - return read_byte(priv, SPSR); -} -EXPORT_SYMBOL(nec7210_serial_poll_status); - -int nec7210_primary_address(const struct gpib_board *board, struct nec7210_priv *priv, - unsigned int address) -{ - // put primary address in address0 - write_byte(priv, address & ADDRESS_MASK, ADR); - return 0; -} -EXPORT_SYMBOL(nec7210_primary_address); - -int nec7210_secondary_address(const struct gpib_board *board, struct nec7210_priv *priv, - unsigned int address, int enable) -{ - if (enable) { - // put secondary address in address1 - write_byte(priv, HR_ARS | (address & ADDRESS_MASK), ADR); - // go to address mode 2 - priv->reg_bits[ADMR] &= ~HR_ADM0; - priv->reg_bits[ADMR] |= HR_ADM1; - } else { - // disable address1 register - write_byte(priv, HR_ARS | HR_DT | HR_DL, ADR); - // go to address mode 1 - priv->reg_bits[ADMR] |= HR_ADM0; - priv->reg_bits[ADMR] &= ~HR_ADM1; - } - write_byte(priv, priv->reg_bits[ADMR], ADMR); - return 0; -} -EXPORT_SYMBOL(nec7210_secondary_address); - -static void update_talker_state(struct nec7210_priv *priv, unsigned int address_status_bits) -{ - if ((address_status_bits & HR_TA)) { - if ((address_status_bits & HR_NATN)) { - if (address_status_bits & HR_SPMS) - priv->talker_state = serial_poll_active; - else - priv->talker_state = talker_active; - } else { - priv->talker_state = talker_addressed; - } - } else { - priv->talker_state = talker_idle; - } -} - -static void update_listener_state(struct nec7210_priv *priv, unsigned int address_status_bits) -{ - if (address_status_bits & HR_LA) { - if ((address_status_bits & HR_NATN)) - priv->listener_state = listener_active; - else - priv->listener_state = listener_addressed; - } else { - priv->listener_state = listener_idle; - } -} - -unsigned int nec7210_update_status_nolock(struct gpib_board *board, struct nec7210_priv *priv) -{ - int address_status_bits; - u8 spoll_status; - - if (!priv) - return 0; - - address_status_bits = read_byte(priv, ADSR); - if (address_status_bits & HR_CIC) - set_bit(CIC_NUM, &board->status); - else - clear_bit(CIC_NUM, &board->status); - // check for talker/listener addressed - update_talker_state(priv, address_status_bits); - if (priv->talker_state == talker_active || priv->talker_state == talker_addressed) - set_bit(TACS_NUM, &board->status); - else - clear_bit(TACS_NUM, &board->status); - update_listener_state(priv, address_status_bits); - if (priv->listener_state == listener_active || - priv->listener_state == listener_addressed) - set_bit(LACS_NUM, &board->status); - else - clear_bit(LACS_NUM, &board->status); - if (address_status_bits & HR_NATN) - clear_bit(ATN_NUM, &board->status); - else - set_bit(ATN_NUM, &board->status); - spoll_status = nec7210_serial_poll_status(board, priv); - if (priv->srq_pending && (spoll_status & request_service_bit) == 0) { - priv->srq_pending = 0; - set_bit(SPOLL_NUM, &board->status); - } - - /* - * we rely on the interrupt handler to set the - * rest of the status bits - */ - - return board->status; -} -EXPORT_SYMBOL(nec7210_update_status_nolock); - -unsigned int nec7210_update_status(struct gpib_board *board, struct nec7210_priv *priv, - unsigned int clear_mask) -{ - unsigned long flags; - unsigned int retval; - - spin_lock_irqsave(&board->spinlock, flags); - board->status &= ~clear_mask; - retval = nec7210_update_status_nolock(board, priv); - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} -EXPORT_SYMBOL(nec7210_update_status); - -unsigned int nec7210_set_reg_bits(struct nec7210_priv *priv, unsigned int reg, - unsigned int mask, unsigned int bits) -{ - priv->reg_bits[reg] &= ~mask; - priv->reg_bits[reg] |= mask & bits; - write_byte(priv, priv->reg_bits[reg], reg); - return priv->reg_bits[reg]; -} -EXPORT_SYMBOL(nec7210_set_reg_bits); - -void nec7210_set_handshake_mode(struct gpib_board *board, struct nec7210_priv *priv, int mode) -{ - unsigned long flags; - - mode &= HR_HANDSHAKE_MASK; - - spin_lock_irqsave(&board->spinlock, flags); - if ((priv->auxa_bits & HR_HANDSHAKE_MASK) != mode) { - priv->auxa_bits &= ~HR_HANDSHAKE_MASK; - priv->auxa_bits |= mode; - write_byte(priv, priv->auxa_bits, AUXMR); - } - spin_unlock_irqrestore(&board->spinlock, flags); -} -EXPORT_SYMBOL(nec7210_set_handshake_mode); - -u8 nec7210_read_data_in(struct gpib_board *board, struct nec7210_priv *priv, int *end) -{ - unsigned long flags; - u8 data; - - spin_lock_irqsave(&board->spinlock, flags); - data = read_byte(priv, DIR); - clear_bit(READ_READY_BN, &priv->state); - if (test_and_clear_bit(RECEIVED_END_BN, &priv->state)) - *end = 1; - else - *end = 0; - spin_unlock_irqrestore(&board->spinlock, flags); - - return data; -} -EXPORT_SYMBOL(nec7210_read_data_in); - -int nec7210_take_control(struct gpib_board *board, struct nec7210_priv *priv, int syncronous) -{ - int i; - const int timeout = 100; - int retval = 0; - unsigned int adsr_bits = 0; - - if (syncronous) - write_byte(priv, AUX_TCS, AUXMR); - else - write_byte(priv, AUX_TCA, AUXMR); - // busy wait until ATN is asserted - for (i = 0; i < timeout; i++) { - adsr_bits = read_byte(priv, ADSR); - if ((adsr_bits & HR_NATN) == 0) - break; - udelay(1); - } - if (i == timeout) - return -ETIMEDOUT; - - clear_bit(WRITE_READY_BN, &priv->state); - - return retval; -} -EXPORT_SYMBOL(nec7210_take_control); - -int nec7210_go_to_standby(struct gpib_board *board, struct nec7210_priv *priv) -{ - int i; - const int timeout = 1000; - unsigned int adsr_bits = 0; - int retval = 0; - - write_byte(priv, AUX_GTS, AUXMR); - // busy wait until ATN is released - for (i = 0; i < timeout; i++) { - adsr_bits = read_byte(priv, ADSR); - if (adsr_bits & HR_NATN) - break; - udelay(1); - } - // if busy wait has failed, try sleeping - if (i == timeout) { - for (i = 0; i < HZ; i++) { - set_current_state(TASK_INTERRUPTIBLE); - if (schedule_timeout(1)) - return -ERESTARTSYS; - adsr_bits = read_byte(priv, ADSR); - if (adsr_bits & HR_NATN) - break; - } - if (i == HZ) - return -ETIMEDOUT; - } - - clear_bit(COMMAND_READY_BN, &priv->state); - return retval; -} -EXPORT_SYMBOL(nec7210_go_to_standby); - -int nec7210_request_system_control(struct gpib_board *board, struct nec7210_priv *priv, - int request_control) -{ - if (request_control == 0) { - write_byte(priv, AUX_CREN, AUXMR); - write_byte(priv, AUX_CIFC, AUXMR); - write_byte(priv, AUX_DSC, AUXMR); - } - return 0; -} -EXPORT_SYMBOL(nec7210_request_system_control); - -void nec7210_interface_clear(struct gpib_board *board, struct nec7210_priv *priv, int assert) -{ - if (assert) - write_byte(priv, AUX_SIFC, AUXMR); - else - write_byte(priv, AUX_CIFC, AUXMR); -} -EXPORT_SYMBOL(nec7210_interface_clear); - -void nec7210_remote_enable(struct gpib_board *board, struct nec7210_priv *priv, int enable) -{ - if (enable) - write_byte(priv, AUX_SREN, AUXMR); - else - write_byte(priv, AUX_CREN, AUXMR); -} -EXPORT_SYMBOL(nec7210_remote_enable); - -void nec7210_release_rfd_holdoff(struct gpib_board *board, struct nec7210_priv *priv) -{ - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - if (test_bit(RFD_HOLDOFF_BN, &priv->state) && - test_bit(READ_READY_BN, &priv->state) == 0) { - write_byte(priv, AUX_FH, AUXMR); - clear_bit(RFD_HOLDOFF_BN, &priv->state); - } - spin_unlock_irqrestore(&board->spinlock, flags); -} -EXPORT_SYMBOL(nec7210_release_rfd_holdoff); - -int nec7210_t1_delay(struct gpib_board *board, struct nec7210_priv *priv, - unsigned int nano_sec) -{ - unsigned int retval; - - if (nano_sec <= 500) { - priv->auxb_bits |= HR_TRI; - retval = 500; - } else { - priv->auxb_bits &= ~HR_TRI; - retval = 2000; - } - write_byte(priv, priv->auxb_bits, AUXMR); - - return retval; -} -EXPORT_SYMBOL(nec7210_t1_delay); - -void nec7210_return_to_local(const struct gpib_board *board, struct nec7210_priv *priv) -{ - write_byte(priv, AUX_RTL, AUXMR); -} -EXPORT_SYMBOL(nec7210_return_to_local); - -static inline short nec7210_atn_has_changed(struct gpib_board *board, struct nec7210_priv *priv) -{ - short address_status_bits = read_byte(priv, ADSR); - - if (address_status_bits & HR_NATN) { - if (test_bit(ATN_NUM, &board->status)) - return 1; - else - return 0; - } else { - if (test_bit(ATN_NUM, &board->status)) - return 0; - else - return 1; - } - return -1; -} - -int nec7210_command(struct gpib_board *board, struct nec7210_priv *priv, u8 - *buffer, size_t length, size_t *bytes_written) -{ - int retval = 0; - unsigned long flags; - - *bytes_written = 0; - - clear_bit(BUS_ERROR_BN, &priv->state); - - while (*bytes_written < length) { - if (wait_event_interruptible(board->wait, - test_bit(COMMAND_READY_BN, &priv->state) || - test_bit(BUS_ERROR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) { - dev_dbg(board->gpib_dev, "command wait interrupted\n"); - retval = -ERESTARTSYS; - break; - } - if (test_bit(TIMO_NUM, &board->status)) - break; - if (test_and_clear_bit(BUS_ERROR_BN, &priv->state)) - break; - spin_lock_irqsave(&board->spinlock, flags); - clear_bit(COMMAND_READY_BN, &priv->state); - write_byte(priv, buffer[*bytes_written], CDOR); - spin_unlock_irqrestore(&board->spinlock, flags); - - ++(*bytes_written); - - if (need_resched()) - schedule(); - } - // wait for last byte to get sent - if (wait_event_interruptible(board->wait, test_bit(COMMAND_READY_BN, &priv->state) || - test_bit(BUS_ERROR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - - if (test_and_clear_bit(BUS_ERROR_BN, &priv->state)) - retval = -EIO; - - return retval; -} -EXPORT_SYMBOL(nec7210_command); - -static int pio_read(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - - *bytes_read = 0; - *end = 0; - - while (*bytes_read < length) { - if (wait_event_interruptible(board->wait, - test_bit(READ_READY_BN, &priv->state) || - test_bit(DEV_CLEAR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - break; - } - if (test_bit(READ_READY_BN, &priv->state)) { - if (*bytes_read == 0) { - /* - * We set the handshake mode here because we know - * no new bytes will arrive (it has already arrived - * and is awaiting being read out of the chip) while we are changing - * modes. This ensures we can reliably keep track - * of the holdoff state. - */ - nec7210_set_handshake_mode(board, priv, HR_HLDA); - } - buffer[(*bytes_read)++] = nec7210_read_data_in(board, priv, end); - if (*end) - break; - } - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &priv->state)) { - retval = -EINTR; - break; - } - - if (*bytes_read < length) - nec7210_release_rfd_holdoff(board, priv); - - if (need_resched()) - schedule(); - } - return retval; -} - -#ifdef NEC_DMA -static ssize_t __dma_read(struct gpib_board *board, struct nec7210_priv *priv, size_t length) -{ - ssize_t retval = 0; - size_t count = 0; - unsigned long flags, dma_irq_flags; - - if (length == 0) - return 0; - - spin_lock_irqsave(&board->spinlock, flags); - - dma_irq_flags = claim_dma_lock(); - disable_dma(priv->dma_channel); - /* program dma controller */ - clear_dma_ff(priv->dma_channel); - set_dma_count(priv->dma_channel, length); - set_dma_addr(priv->dma_channel, priv->dma_buffer_addr); - set_dma_mode(priv->dma_channel, DMA_MODE_READ); - release_dma_lock(dma_irq_flags); - - enable_dma(priv->dma_channel); - - set_bit(DMA_READ_IN_PROGRESS_BN, &priv->state); - clear_bit(READ_READY_BN, &priv->state); - - // enable nec7210 dma - nec7210_set_reg_bits(priv, IMR2, HR_DMAI, HR_DMAI); - - spin_unlock_irqrestore(&board->spinlock, flags); - - // wait for data to transfer - if (wait_event_interruptible(board->wait, - test_bit(DMA_READ_IN_PROGRESS_BN, &priv->state) == 0 || - test_bit(DEV_CLEAR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &priv->state)) - retval = -EINTR; - - // disable nec7210 dma - nec7210_set_reg_bits(priv, IMR2, HR_DMAI, 0); - - // record how many bytes we transferred - flags = claim_dma_lock(); - clear_dma_ff(priv->dma_channel); - disable_dma(priv->dma_channel); - count += length - get_dma_residue(priv->dma_channel); - release_dma_lock(flags); - - return retval ? retval : count; -} - -static ssize_t dma_read(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length) -{ - size_t remain = length; - size_t transfer_size; - ssize_t retval = 0; - - while (remain > 0) { - transfer_size = (priv->dma_buffer_length < remain) ? - priv->dma_buffer_length : remain; - retval = __dma_read(board, priv, transfer_size); - if (retval < 0) - break; - memcpy(buffer, priv->dma_buffer, transfer_size); - remain -= retval; - buffer += retval; - if (test_bit(RECEIVED_END_BN, &priv->state)) - break; - } - - if (retval < 0) - return retval; - - return length - remain; -} -#endif - -int nec7210_read(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - - *end = 0; - *bytes_read = 0; - - if (length == 0) - return 0; - - clear_bit(DEV_CLEAR_BN, &priv->state); // XXX wrong - - nec7210_release_rfd_holdoff(board, priv); - - retval = pio_read(board, priv, buffer, length, end, bytes_read); - - return retval; -} -EXPORT_SYMBOL(nec7210_read); - -static int pio_write_wait(struct gpib_board *board, struct nec7210_priv *priv, - short wake_on_lacs, short wake_on_atn, short wake_on_bus_error) -{ - // wait until byte is ready to be sent - if (wait_event_interruptible(board->wait, - (test_bit(TACS_NUM, &board->status) && - test_bit(WRITE_READY_BN, &priv->state)) || - test_bit(DEV_CLEAR_BN, &priv->state) || - (wake_on_bus_error && test_bit(BUS_ERROR_BN, &priv->state)) || - (wake_on_lacs && test_bit(LACS_NUM, &board->status)) || - (wake_on_atn && test_bit(ATN_NUM, &board->status)) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - - if (test_bit(DEV_CLEAR_BN, &priv->state)) - return -EINTR; - - if (wake_on_bus_error && test_and_clear_bit(BUS_ERROR_BN, &priv->state)) - return -EIO; - - return 0; -} - -static int pio_write(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length, size_t *bytes_written) -{ - size_t last_count = 0; - ssize_t retval = 0; - unsigned long flags; - const int max_bus_errors = (length > 1000) ? length : 1000; - int bus_error_count = 0; - *bytes_written = 0; - - clear_bit(BUS_ERROR_BN, &priv->state); - - while (*bytes_written < length) { - if (need_resched()) - schedule(); - - retval = pio_write_wait(board, priv, 0, 0, priv->type == NEC7210); - if (retval == -EIO) { - /* resend last byte on bus error */ - *bytes_written = last_count; - /* - * we can get unrecoverable bus errors, - * so give up after a while - */ - bus_error_count++; - if (bus_error_count > max_bus_errors) - return retval; - continue; - } else { - if (retval < 0) - return retval; - } - spin_lock_irqsave(&board->spinlock, flags); - clear_bit(BUS_ERROR_BN, &priv->state); - clear_bit(WRITE_READY_BN, &priv->state); - last_count = *bytes_written; - write_byte(priv, buffer[(*bytes_written)++], CDOR); - spin_unlock_irqrestore(&board->spinlock, flags); - } - retval = pio_write_wait(board, priv, 1, 1, priv->type == NEC7210); - return retval; -} - -#ifdef NEC_DMA -static ssize_t __dma_write(struct gpib_board *board, struct nec7210_priv *priv, dma_addr_t address, - size_t length) -{ - unsigned long flags, dma_irq_flags; - int residue = 0; - int retval = 0; - - spin_lock_irqsave(&board->spinlock, flags); - - /* program dma controller */ - dma_irq_flags = claim_dma_lock(); - disable_dma(priv->dma_channel); - clear_dma_ff(priv->dma_channel); - set_dma_count(priv->dma_channel, length); - set_dma_addr(priv->dma_channel, address); - set_dma_mode(priv->dma_channel, DMA_MODE_WRITE); - enable_dma(priv->dma_channel); - release_dma_lock(dma_irq_flags); - - // enable board's dma for output - nec7210_set_reg_bits(priv, IMR2, HR_DMAO, HR_DMAO); - - clear_bit(WRITE_READY_BN, &priv->state); - set_bit(DMA_WRITE_IN_PROGRESS_BN, &priv->state); - - spin_unlock_irqrestore(&board->spinlock, flags); - - // suspend until message is sent - if (wait_event_interruptible(board->wait, - test_bit(DMA_WRITE_IN_PROGRESS_BN, &priv->state) == 0 || - test_bit(BUS_ERROR_BN, &priv->state) || - test_bit(DEV_CLEAR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_and_clear_bit(DEV_CLEAR_BN, &priv->state)) - retval = -EINTR; - if (test_and_clear_bit(BUS_ERROR_BN, &priv->state)) - retval = -EIO; - - // disable board's dma - nec7210_set_reg_bits(priv, IMR2, HR_DMAO, 0); - - dma_irq_flags = claim_dma_lock(); - clear_dma_ff(priv->dma_channel); - disable_dma(priv->dma_channel); - residue = get_dma_residue(priv->dma_channel); - release_dma_lock(dma_irq_flags); - - if (residue) - retval = -EPIPE; - - return retval ? retval : length; -} - -static ssize_t dma_write(struct gpib_board *board, struct nec7210_priv *priv, u8 *buffer, - size_t length) -{ - size_t remain = length; - size_t transfer_size; - ssize_t retval = 0; - - while (remain > 0) { - transfer_size = (priv->dma_buffer_length < remain) ? - priv->dma_buffer_length : remain; - memcpy(priv->dma_buffer, buffer, transfer_size); - retval = __dma_write(board, priv, priv->dma_buffer_addr, transfer_size); - if (retval < 0) - break; - remain -= retval; - buffer += retval; - } - - if (retval < 0) - return retval; - - return length - remain; -} -#endif -int nec7210_write(struct gpib_board *board, struct nec7210_priv *priv, - u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - int retval = 0; - - *bytes_written = 0; - - clear_bit(DEV_CLEAR_BN, &priv->state); // XXX - - if (send_eoi) - length-- ; // save the last byte for sending EOI - - if (length > 0) { - // isa dma transfer - if (0 /*priv->dma_channel*/) { -/* - * dma writes are unreliable since they can't recover from bus errors - * (which happen when ATN is asserted in the middle of a write) - */ -#ifdef NEC_DMA - retval = dma_write(board, priv, buffer, length); - if (retval < 0) - return retval; - count += retval; -#endif - } else { // PIO transfer - size_t num_bytes; - - retval = pio_write(board, priv, buffer, length, &num_bytes); - - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - } - if (send_eoi) { - size_t num_bytes; - - /* - * We need to wait to make sure we will immediately be able to write the data byte - * into the chip before sending the associated AUX_SEOI command. This is really - * only needed for length==1 since otherwise the earlier calls to pio_write - * will have dont the wait already. - */ - retval = pio_write_wait(board, priv, 0, 0, priv->type == NEC7210); - if (retval < 0) - return retval; - /*send EOI */ - write_byte(priv, AUX_SEOI, AUXMR); - - retval = pio_write(board, priv, &buffer[*bytes_written], 1, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - - return retval; -} -EXPORT_SYMBOL(nec7210_write); - -/* - * interrupt service routine - */ -irqreturn_t nec7210_interrupt(struct gpib_board *board, struct nec7210_priv *priv) -{ - int status1, status2; - - // read interrupt status (also clears status) - status1 = read_byte(priv, ISR1); - status2 = read_byte(priv, ISR2); - - return nec7210_interrupt_have_status(board, priv, status1, status2); -} -EXPORT_SYMBOL(nec7210_interrupt); - -irqreturn_t nec7210_interrupt_have_status(struct gpib_board *board, - struct nec7210_priv *priv, int status1, int status2) -{ -#ifdef NEC_DMA - unsigned long dma_flags; -#endif - int retval = IRQ_NONE; - - // record service request in status - if (status2 & HR_SRQI) - set_bit(SRQI_NUM, &board->status); - - // change in lockout status - if (status2 & HR_LOKC) { - if (status2 & HR_LOK) - set_bit(LOK_NUM, &board->status); - else - clear_bit(LOK_NUM, &board->status); - } - - // change in remote status - if (status2 & HR_REMC) { - if (status2 & HR_REM) - set_bit(REM_NUM, &board->status); - else - clear_bit(REM_NUM, &board->status); - } - - // record reception of END - if (status1 & HR_END) { - set_bit(RECEIVED_END_BN, &priv->state); - if ((priv->auxa_bits & HR_HANDSHAKE_MASK) == HR_HLDE) - set_bit(RFD_HOLDOFF_BN, &priv->state); - } - - // get incoming data in PIO mode - if ((status1 & HR_DI)) { - set_bit(READ_READY_BN, &priv->state); - if ((priv->auxa_bits & HR_HANDSHAKE_MASK) == HR_HLDA) - set_bit(RFD_HOLDOFF_BN, &priv->state); - } -#ifdef NEC_DMA - // check for dma read transfer complete - if (test_bit(DMA_READ_IN_PROGRESS_BN, &priv->state)) { - dma_flags = claim_dma_lock(); - disable_dma(priv->dma_channel); - clear_dma_ff(priv->dma_channel); - if ((status1 & HR_END) || get_dma_residue(priv->dma_channel) == 0) - clear_bit(DMA_READ_IN_PROGRESS_BN, &priv->state); - else - enable_dma(priv->dma_channel); - release_dma_lock(dma_flags); - } -#endif - if ((status1 & HR_DO)) { - if (test_bit(DMA_WRITE_IN_PROGRESS_BN, &priv->state) == 0) - set_bit(WRITE_READY_BN, &priv->state); -#ifdef NEC_DMA - if (test_bit(DMA_WRITE_IN_PROGRESS_BN, &priv->state)) { // write data, isa dma mode - // check if dma transfer is complete - dma_flags = claim_dma_lock(); - disable_dma(priv->dma_channel); - clear_dma_ff(priv->dma_channel); - if (get_dma_residue(priv->dma_channel) == 0) { - clear_bit(DMA_WRITE_IN_PROGRESS_BN, &priv->state); - // XXX race? byte may still be in CDOR reg - } else { - clear_bit(WRITE_READY_BN, &priv->state); - enable_dma(priv->dma_channel); - } - release_dma_lock(dma_flags); - } -#endif - } - - // outgoing command can be sent - if (status2 & HR_CO) - set_bit(COMMAND_READY_BN, &priv->state); - - // command pass through received - if (status1 & HR_CPT) - write_byte(priv, AUX_NVAL, AUXMR); - - if (status1 & HR_ERR) - set_bit(BUS_ERROR_BN, &priv->state); - - if (status1 & HR_DEC) { - unsigned short address_status_bits = read_byte(priv, ADSR); - - // ignore device clear events if we are controller in charge - if ((address_status_bits & HR_CIC) == 0) { - push_gpib_event(board, EVENT_DEV_CLR); - set_bit(DEV_CLEAR_BN, &priv->state); - } - } - - if (status1 & HR_DET) - push_gpib_event(board, EVENT_DEV_TRG); - - // Addressing status has changed - if (status2 & HR_ADSC) - set_bit(ADR_CHANGE_BN, &priv->state); - - if ((status1 & priv->reg_bits[IMR1]) || - (status2 & (priv->reg_bits[IMR2] & IMR2_ENABLE_INTR_MASK)) || - nec7210_atn_has_changed(board, priv)) { - nec7210_update_status_nolock(board, priv); - dev_dbg(board->gpib_dev, "minor %i, stat %lx, isr1 0x%x, imr1 0x%x, isr2 0x%x, imr2 0x%x\n", - board->minor, board->status, status1, priv->reg_bits[IMR1], status2, - priv->reg_bits[IMR2]); - wake_up_interruptible(&board->wait); /* wake up sleeping process */ - retval = IRQ_HANDLED; - } - - return retval; -} -EXPORT_SYMBOL(nec7210_interrupt_have_status); - -void nec7210_board_reset(struct nec7210_priv *priv, const struct gpib_board *board) -{ - /* 7210 chip reset */ - write_byte(priv, AUX_CR, AUXMR); - - /* disable all interrupts */ - priv->reg_bits[IMR1] = 0; - write_byte(priv, priv->reg_bits[IMR1], IMR1); - priv->reg_bits[IMR2] = 0; - write_byte(priv, priv->reg_bits[IMR2], IMR2); - write_byte(priv, 0, SPMR); - - /* clear registers by reading */ - read_byte(priv, CPTR); - read_byte(priv, ISR1); - read_byte(priv, ISR2); - - /* parallel poll unconfigure */ - write_byte(priv, PPR | HR_PPU, AUXMR); - - priv->reg_bits[ADMR] = HR_TRM0 | HR_TRM1; - - priv->auxa_bits = AUXRA | HR_HLDA; - write_byte(priv, priv->auxa_bits, AUXMR); - - write_byte(priv, AUXRE | 0, AUXMR); - - /* set INT pin to active high, enable command pass through of unknown commands */ - priv->auxb_bits = AUXRB | HR_CPTE; - write_byte(priv, priv->auxb_bits, AUXMR); - write_byte(priv, AUXRE, AUXMR); -} -EXPORT_SYMBOL(nec7210_board_reset); - -void nec7210_board_online(struct nec7210_priv *priv, const struct gpib_board *board) -{ - /* set GPIB address */ - nec7210_primary_address(board, priv, board->pad); - nec7210_secondary_address(board, priv, board->sad, board->sad >= 0); - - /* enable interrupts */ - priv->reg_bits[IMR1] = HR_ERRIE | HR_DECIE | HR_ENDIE | - HR_DETIE | HR_CPTIE | HR_DOIE | HR_DIIE; - priv->reg_bits[IMR2] = IMR2_ENABLE_INTR_MASK; - write_byte(priv, priv->reg_bits[IMR1], IMR1); - write_byte(priv, priv->reg_bits[IMR2], IMR2); - - write_byte(priv, AUX_PON, AUXMR); -} -EXPORT_SYMBOL(nec7210_board_online); - -#ifdef CONFIG_HAS_IOPORT -/* wrappers for io */ -u8 nec7210_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num) -{ - return inb(priv->iobase + register_num * priv->offset); -} -EXPORT_SYMBOL(nec7210_ioport_read_byte); - -void nec7210_ioport_write_byte(struct nec7210_priv *priv, u8 data, unsigned int register_num) -{ - if (register_num == AUXMR) - /* - * locking makes absolutely sure noone accesses the - * AUXMR register faster than once per microsecond - */ - nec7210_locking_ioport_write_byte(priv, data, register_num); - else - outb(data, priv->iobase + register_num * priv->offset); -} -EXPORT_SYMBOL(nec7210_ioport_write_byte); - -/* locking variants of io wrappers, for chips that page-in registers */ -u8 nec7210_locking_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num) -{ - u8 retval; - unsigned long flags; - - spin_lock_irqsave(&priv->register_page_lock, flags); - retval = inb(priv->iobase + register_num * priv->offset); - spin_unlock_irqrestore(&priv->register_page_lock, flags); - return retval; -} -EXPORT_SYMBOL(nec7210_locking_ioport_read_byte); - -void nec7210_locking_ioport_write_byte(struct nec7210_priv *priv, u8 data, - unsigned int register_num) -{ - unsigned long flags; - - spin_lock_irqsave(&priv->register_page_lock, flags); - if (register_num == AUXMR) - udelay(1); - outb(data, priv->iobase + register_num * priv->offset); - spin_unlock_irqrestore(&priv->register_page_lock, flags); -} -EXPORT_SYMBOL(nec7210_locking_ioport_write_byte); -#endif - -u8 nec7210_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num) -{ - return readb(priv->mmiobase + register_num * priv->offset); -} -EXPORT_SYMBOL(nec7210_iomem_read_byte); - -void nec7210_iomem_write_byte(struct nec7210_priv *priv, u8 data, unsigned int register_num) -{ - if (register_num == AUXMR) - /* - * locking makes absolutely sure noone accesses the - * AUXMR register faster than once per microsecond - */ - nec7210_locking_iomem_write_byte(priv, data, register_num); - else - writeb(data, priv->mmiobase + register_num * priv->offset); -} -EXPORT_SYMBOL(nec7210_iomem_write_byte); - -u8 nec7210_locking_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num) -{ - u8 retval; - unsigned long flags; - - spin_lock_irqsave(&priv->register_page_lock, flags); - retval = readb(priv->mmiobase + register_num * priv->offset); - spin_unlock_irqrestore(&priv->register_page_lock, flags); - return retval; -} -EXPORT_SYMBOL(nec7210_locking_iomem_read_byte); - -void nec7210_locking_iomem_write_byte(struct nec7210_priv *priv, u8 data, - unsigned int register_num) -{ - unsigned long flags; - - spin_lock_irqsave(&priv->register_page_lock, flags); - if (register_num == AUXMR) - udelay(1); - writeb(data, priv->mmiobase + register_num * priv->offset); - spin_unlock_irqrestore(&priv->register_page_lock, flags); -} -EXPORT_SYMBOL(nec7210_locking_iomem_write_byte); - -static int __init nec7210_init_module(void) -{ - return 0; -} - -static void __exit nec7210_exit_module(void) -{ -} - -module_init(nec7210_init_module); -module_exit(nec7210_exit_module); diff --git a/drivers/staging/gpib/ni_usb/Makefile b/drivers/staging/gpib/ni_usb/Makefile deleted file mode 100644 index 469c5d16add3..000000000000 --- a/drivers/staging/gpib/ni_usb/Makefile +++ /dev/null @@ -1,4 +0,0 @@ - -obj-$(CONFIG_GPIB_NI_USB) += ni_usb_gpib.o - - diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c deleted file mode 100644 index 1f8412de9fa3..000000000000 --- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c +++ /dev/null @@ -1,2678 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * driver for National Instruments usb to gpib adapters - * copyright : (C) 2004 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include "ni_usb_gpib.h" -#include "gpibP.h" -#include "nec7210.h" -#include "tnt4882_registers.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for National Instruments USB devices"); - -#define MAX_NUM_NI_USB_INTERFACES 128 -static struct usb_interface *ni_usb_driver_interfaces[MAX_NUM_NI_USB_INTERFACES]; - -static int ni_usb_parse_status_block(const u8 *buffer, struct ni_usb_status_block *status); -static int ni_usb_set_interrupt_monitor(struct gpib_board *board, unsigned int monitored_bits); -static void ni_usb_stop(struct ni_usb_priv *ni_priv); - -static DEFINE_MUTEX(ni_usb_hotplug_lock); - -// calculates a reasonable timeout in that can be passed to usb functions -static inline unsigned long ni_usb_timeout_msecs(unsigned int usec) -{ - if (usec == 0) - return 0; - return 2000 + usec / 500; -}; - -// returns timeout code byte for use in ni-usb-b instructions -static unsigned short ni_usb_timeout_code(unsigned int usec) -{ - if (usec == 0) - return 0xf0; - else if (usec <= 10) - return 0xf1; - else if (usec <= 30) - return 0xf2; - else if (usec <= 100) - return 0xf3; - else if (usec <= 300) - return 0xf4; - else if (usec <= 1000) - return 0xf5; - else if (usec <= 3000) - return 0xf6; - else if (usec <= 10000) - return 0xf7; - else if (usec <= 30000) - return 0xf8; - else if (usec <= 100000) - return 0xf9; - else if (usec <= 300000) - return 0xfa; - else if (usec <= 1000000) - return 0xfb; - else if (usec <= 3000000) - return 0xfc; - else if (usec <= 10000000) - return 0xfd; - else if (usec <= 30000000) - return 0xfe; - else if (usec <= 100000000) - return 0xff; - else if (usec <= 300000000) - return 0x01; - /* - * NI driver actually uses 0xff for timeout T1000s, which is a bug in their code. - * I've verified on a usb-b that a code of 0x2 is correct for a 1000 sec timeout - */ - else if (usec <= 1000000000) - return 0x02; - pr_err("bug? usec is greater than 1e9\n"); - return 0xf0; -} - -static void ni_usb_bulk_complete(struct urb *urb) -{ - struct ni_usb_urb_ctx *context = urb->context; - - complete(&context->complete); -} - -static void ni_usb_timeout_handler(struct timer_list *t) -{ - struct ni_usb_priv *ni_priv = timer_container_of(ni_priv, t, - bulk_timer); - struct ni_usb_urb_ctx *context = &ni_priv->context; - - context->timed_out = 1; - complete(&context->complete); -}; - -// I'm using nonblocking loosely here, it only means -EAGAIN can be returned in certain cases -static int ni_usb_nonblocking_send_bulk_msg(struct ni_usb_priv *ni_priv, void *data, - int data_length, int *actual_data_length, - int timeout_msecs) -{ - struct usb_device *usb_dev; - int retval; - unsigned int out_pipe; - struct ni_usb_urb_ctx *context = &ni_priv->context; - - *actual_data_length = 0; - mutex_lock(&ni_priv->bulk_transfer_lock); - if (!ni_priv->bus_interface) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -ENODEV; - } - if (ni_priv->bulk_urb) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -EAGAIN; - } - ni_priv->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ni_priv->bulk_urb) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -ENOMEM; - } - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_pipe = usb_sndbulkpipe(usb_dev, ni_priv->bulk_out_endpoint); - init_completion(&context->complete); - context->timed_out = 0; - usb_fill_bulk_urb(ni_priv->bulk_urb, usb_dev, out_pipe, data, data_length, - &ni_usb_bulk_complete, context); - - if (timeout_msecs) - mod_timer(&ni_priv->bulk_timer, jiffies + msecs_to_jiffies(timeout_msecs)); - - retval = usb_submit_urb(ni_priv->bulk_urb, GFP_KERNEL); - if (retval) { - timer_delete_sync(&ni_priv->bulk_timer); - usb_free_urb(ni_priv->bulk_urb); - ni_priv->bulk_urb = NULL; - dev_err(&usb_dev->dev, "failed to submit bulk out urb, retval=%i\n", - retval); - mutex_unlock(&ni_priv->bulk_transfer_lock); - return retval; - } - mutex_unlock(&ni_priv->bulk_transfer_lock); - wait_for_completion(&context->complete); // wait for ni_usb_bulk_complete - if (context->timed_out) { - usb_kill_urb(ni_priv->bulk_urb); - dev_err(&usb_dev->dev, "killed urb due to timeout\n"); - retval = -ETIMEDOUT; - } else { - retval = ni_priv->bulk_urb->status; - } - - timer_delete_sync(&ni_priv->bulk_timer); - *actual_data_length = ni_priv->bulk_urb->actual_length; - mutex_lock(&ni_priv->bulk_transfer_lock); - usb_free_urb(ni_priv->bulk_urb); - ni_priv->bulk_urb = NULL; - mutex_unlock(&ni_priv->bulk_transfer_lock); - return retval; -} - -static int ni_usb_send_bulk_msg(struct ni_usb_priv *ni_priv, void *data, int data_length, - int *actual_data_length, int timeout_msecs) -{ - int retval; - int timeout_msecs_remaining = timeout_msecs; - - retval = ni_usb_nonblocking_send_bulk_msg(ni_priv, data, data_length, actual_data_length, - timeout_msecs_remaining); - while (retval == -EAGAIN && (timeout_msecs == 0 || timeout_msecs_remaining > 0)) { - usleep_range(1000, 1500); - retval = ni_usb_nonblocking_send_bulk_msg(ni_priv, data, data_length, - actual_data_length, - timeout_msecs_remaining); - if (timeout_msecs != 0) - --timeout_msecs_remaining; - } - if (timeout_msecs != 0 && timeout_msecs_remaining <= 0) - return -ETIMEDOUT; - return retval; -} - -// I'm using nonblocking loosely here, it only means -EAGAIN can be returned in certain cases -static int ni_usb_nonblocking_receive_bulk_msg(struct ni_usb_priv *ni_priv, - void *data, int data_length, - int *actual_data_length, int timeout_msecs, - int interruptible) -{ - struct usb_device *usb_dev; - int retval; - unsigned int in_pipe; - struct ni_usb_urb_ctx *context = &ni_priv->context; - - *actual_data_length = 0; - mutex_lock(&ni_priv->bulk_transfer_lock); - if (!ni_priv->bus_interface) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -ENODEV; - } - if (ni_priv->bulk_urb) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -EAGAIN; - } - ni_priv->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ni_priv->bulk_urb) { - mutex_unlock(&ni_priv->bulk_transfer_lock); - return -ENOMEM; - } - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - in_pipe = usb_rcvbulkpipe(usb_dev, ni_priv->bulk_in_endpoint); - init_completion(&context->complete); - context->timed_out = 0; - usb_fill_bulk_urb(ni_priv->bulk_urb, usb_dev, in_pipe, data, data_length, - &ni_usb_bulk_complete, context); - - if (timeout_msecs) - mod_timer(&ni_priv->bulk_timer, jiffies + msecs_to_jiffies(timeout_msecs)); - - retval = usb_submit_urb(ni_priv->bulk_urb, GFP_KERNEL); - if (retval) { - timer_delete_sync(&ni_priv->bulk_timer); - usb_free_urb(ni_priv->bulk_urb); - ni_priv->bulk_urb = NULL; - dev_err(&usb_dev->dev, "failed to submit bulk in urb, retval=%i\n", retval); - mutex_unlock(&ni_priv->bulk_transfer_lock); - return retval; - } - mutex_unlock(&ni_priv->bulk_transfer_lock); - if (interruptible) { - if (wait_for_completion_interruptible(&context->complete)) { - /* - * If we got interrupted by a signal while - * waiting for the usb gpib to respond, we - * should send a stop command so it will - * finish up with whatever it was doing and - * send its response now. - */ - ni_usb_stop(ni_priv); - retval = -ERESTARTSYS; - /* - * now do an uninterruptible wait, it shouldn't take long - * for the board to respond now. - */ - wait_for_completion(&context->complete); - } - } else { - wait_for_completion(&context->complete); - } - if (context->timed_out) { - usb_kill_urb(ni_priv->bulk_urb); - dev_err(&usb_dev->dev, "killed urb due to timeout\n"); - retval = -ETIMEDOUT; - } else { - if (ni_priv->bulk_urb->status) - retval = ni_priv->bulk_urb->status; - } - timer_delete_sync(&ni_priv->bulk_timer); - *actual_data_length = ni_priv->bulk_urb->actual_length; - mutex_lock(&ni_priv->bulk_transfer_lock); - usb_free_urb(ni_priv->bulk_urb); - ni_priv->bulk_urb = NULL; - mutex_unlock(&ni_priv->bulk_transfer_lock); - return retval; -} - -static int ni_usb_receive_bulk_msg(struct ni_usb_priv *ni_priv, void *data, - int data_length, int *actual_data_length, int timeout_msecs, - int interruptible) -{ - int retval; - int timeout_msecs_remaining = timeout_msecs; - - retval = ni_usb_nonblocking_receive_bulk_msg(ni_priv, data, data_length, - actual_data_length, timeout_msecs_remaining, - interruptible); - while (retval == -EAGAIN && (timeout_msecs == 0 || timeout_msecs_remaining > 0)) { - usleep_range(1000, 1500); - retval = ni_usb_nonblocking_receive_bulk_msg(ni_priv, data, data_length, - actual_data_length, - timeout_msecs_remaining, - interruptible); - if (timeout_msecs != 0) - --timeout_msecs_remaining; - } - if (timeout_msecs && timeout_msecs_remaining <= 0) - return -ETIMEDOUT; - return retval; -} - -static int ni_usb_receive_control_msg(struct ni_usb_priv *ni_priv, __u8 request, - __u8 requesttype, __u16 value, __u16 index, - void *data, __u16 size, int timeout_msecs) -{ - struct usb_device *usb_dev; - int retval; - unsigned int in_pipe; - - mutex_lock(&ni_priv->control_transfer_lock); - if (!ni_priv->bus_interface) { - mutex_unlock(&ni_priv->control_transfer_lock); - return -ENODEV; - } - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - in_pipe = usb_rcvctrlpipe(usb_dev, 0); - retval = usb_control_msg(usb_dev, in_pipe, request, requesttype, value, index, data, - size, timeout_msecs); - mutex_unlock(&ni_priv->control_transfer_lock); - return retval; -} - -static void ni_usb_soft_update_status(struct gpib_board *board, unsigned int ni_usb_ibsta, - unsigned int clear_mask) -{ - static const unsigned int ni_usb_ibsta_mask = SRQI | ATN | CIC | REM | LACS | TACS | LOK; - - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - unsigned int need_monitoring_bits = ni_usb_ibsta_monitor_mask; - unsigned long flags; - - board->status &= ~clear_mask; - board->status &= ~ni_usb_ibsta_mask; - board->status |= ni_usb_ibsta & ni_usb_ibsta_mask; - if (ni_usb_ibsta & DCAS) - push_gpib_event(board, EVENT_DEV_CLR); - if (ni_usb_ibsta & DTAS) - push_gpib_event(board, EVENT_DEV_TRG); - - spin_lock_irqsave(&board->spinlock, flags); -/* remove set status bits from monitored set why ?***/ - ni_priv->monitored_ibsta_bits &= ~ni_usb_ibsta; - need_monitoring_bits &= ~ni_priv->monitored_ibsta_bits; /* mm - monitored set */ - spin_unlock_irqrestore(&board->spinlock, flags); - dev_dbg(&usb_dev->dev, "need_monitoring_bits=0x%x\n", need_monitoring_bits); - - if (need_monitoring_bits & ~ni_usb_ibsta) - ni_usb_set_interrupt_monitor(board, ni_usb_ibsta_monitor_mask); - else if (need_monitoring_bits & ni_usb_ibsta) - wake_up_interruptible(&board->wait); - - dev_dbg(&usb_dev->dev, "ibsta=0x%x\n", ni_usb_ibsta); -} - -static int ni_usb_parse_status_block(const u8 *buffer, struct ni_usb_status_block *status) -{ - u16 count; - - status->id = buffer[0]; - status->ibsta = (buffer[1] << 8) | buffer[2]; - status->error_code = buffer[3]; - count = buffer[4] | (buffer[5] << 8); - count = ~count; - count++; - status->count = count; - return 8; -}; - -static void ni_usb_dump_raw_block(const u8 *raw_data, int length) -{ - print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 8, 1, raw_data, length, true); -} - -static int ni_usb_parse_register_read_block(const u8 *raw_data, unsigned int *results, - int num_results) -{ - int i = 0; - int j; - int unexpected = 0; - static const int results_per_chunk = 3; - - for (j = 0; j < num_results;) { - int k; - - if (raw_data[i++] != NIUSB_REGISTER_READ_DATA_START_ID) { - pr_err("parse error: wrong start id\n"); - unexpected = 1; - } - for (k = 0; k < results_per_chunk && j < num_results; ++k) - results[j++] = raw_data[i++]; - } - while (i % 4) - i++; - if (raw_data[i++] != NIUSB_REGISTER_READ_DATA_END_ID) { - pr_err("parse error: wrong end id\n"); - unexpected = 1; - } - if (raw_data[i++] % results_per_chunk != num_results % results_per_chunk) { - pr_err("parse error: wrong count=%i for NIUSB_REGISTER_READ_DATA_END\n", - (int)raw_data[i - 1]); - unexpected = 1; - } - while (i % 4) { - if (raw_data[i++] != 0) { - pr_err("unexpected data: raw_data[%i]=0x%x, expected 0\n", - i - 1, (int)raw_data[i - 1]); - unexpected = 1; - } - } - if (unexpected) - ni_usb_dump_raw_block(raw_data, i); - return i; -} - -static int ni_usb_parse_termination_block(const u8 *buffer) -{ - int i = 0; - - if (buffer[i++] != NIUSB_TERM_ID || - buffer[i++] != 0x0 || - buffer[i++] != 0x0 || - buffer[i++] != 0x0) { - pr_err("received unexpected termination block\n"); - pr_err(" expected: 0x%x 0x%x 0x%x 0x%x\n", NIUSB_TERM_ID, 0x0, 0x0, 0x0); - pr_err(" received: 0x%x 0x%x 0x%x 0x%x\n", - buffer[i - 4], buffer[i - 3], buffer[i - 2], buffer[i - 1]); - } - return i; -}; - -static int parse_board_ibrd_readback(const u8 *raw_data, struct ni_usb_status_block *status, - u8 *parsed_data, int parsed_data_length, - int *actual_bytes_read) -{ - static const int ibrd_data_block_length = 0xf; - static const int ibrd_extended_data_block_length = 0x1e; - int data_block_length = 0; - int i = 0; - int j = 0; - int k; - int num_data_blocks = 0; - struct ni_usb_status_block register_write_status; - int unexpected = 0; - - while (raw_data[i] == NIUSB_IBRD_DATA_ID || raw_data[i] == NIUSB_IBRD_EXTENDED_DATA_ID) { - if (raw_data[i] == NIUSB_IBRD_DATA_ID) { - data_block_length = ibrd_data_block_length; - } else if (raw_data[i] == NIUSB_IBRD_EXTENDED_DATA_ID) { - data_block_length = ibrd_extended_data_block_length; - if (raw_data[++i] != 0) { - pr_err("unexpected data: raw_data[%i]=0x%x, expected 0\n", - i, (int)raw_data[i]); - unexpected = 1; - } - } else { - pr_err("Unexpected NIUSB_IBRD ID\n"); - return -EINVAL; - } - ++i; - for (k = 0; k < data_block_length; k++) { - if (j < parsed_data_length) - parsed_data[j++] = raw_data[i++]; - else - ++i; - } - ++num_data_blocks; - } - i += ni_usb_parse_status_block(&raw_data[i], status); - if (status->id != NIUSB_IBRD_STATUS_ID) { - pr_err("bug: status->id=%i, != ibrd_status_id\n", status->id); - return -EIO; - } - i++; - if (num_data_blocks) { - *actual_bytes_read = (num_data_blocks - 1) * data_block_length + raw_data[i++]; - } else { - ++i; - *actual_bytes_read = 0; - } - if (*actual_bytes_read > j) - pr_err("bug: discarded data. actual_bytes_read=%i, j=%i\n", *actual_bytes_read, j); - for (k = 0; k < 2; k++) - if (raw_data[i++] != 0) { - pr_err("unexpected data: raw_data[%i]=0x%x, expected 0\n", - i - 1, (int)raw_data[i - 1]); - unexpected = 1; - } - i += ni_usb_parse_status_block(&raw_data[i], ®ister_write_status); - if (register_write_status.id != NIUSB_REG_WRITE_ID) { - pr_err("unexpected data: register write status id=0x%x, expected 0x%x\n", - register_write_status.id, NIUSB_REG_WRITE_ID); - unexpected = 1; - } - if (raw_data[i++] != 2) { - pr_err("unexpected data: register write count=%i, expected 2\n", - (int)raw_data[i - 1]); - unexpected = 1; - } - for (k = 0; k < 3; k++) - if (raw_data[i++] != 0) { - pr_err("unexpected data: raw_data[%i]=0x%x, expected 0\n", - i - 1, (int)raw_data[i - 1]); - unexpected = 1; - } - i += ni_usb_parse_termination_block(&raw_data[i]); - if (unexpected) - ni_usb_dump_raw_block(raw_data, i); - return i; -} - -static int ni_usb_parse_reg_write_status_block(const u8 *raw_data, - struct ni_usb_status_block *status, - int *writes_completed) -{ - int i = 0; - - i += ni_usb_parse_status_block(raw_data, status); - *writes_completed = raw_data[i++]; - while (i % 4) - i++; - return i; -} - -static int ni_usb_write_registers(struct ni_usb_priv *ni_priv, - const struct ni_usb_register *writes, int num_writes, - unsigned int *ibsta) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - u8 *out_data, *in_data; - int out_data_length; - static const int in_data_length = 0x20; - int bytes_written = 0, bytes_read = 0; - int i = 0; - int j; - struct ni_usb_status_block status; - static const int bytes_per_write = 3; - int reg_writes_completed; - - out_data_length = num_writes * bytes_per_write + 0x10; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - i += ni_usb_bulk_register_write_header(&out_data[i], num_writes); - for (j = 0; j < num_writes; j++) - i += ni_usb_bulk_register_write(&out_data[i], writes[j]); - while (i % 4) - out_data[i++] = 0x00; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, 1000, 0); - if (retval || bytes_read != 16) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - ni_usb_dump_raw_block(in_data, bytes_read); - kfree(in_data); - return retval; - } - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - ni_usb_parse_reg_write_status_block(in_data, &status, ®_writes_completed); - // FIXME parse extra 09 status bits and termination - kfree(in_data); - if (status.id != NIUSB_REG_WRITE_ID) { - dev_err(&usb_dev->dev, "parse error, id=0x%x != NIUSB_REG_WRITE_ID\n", status.id); - return -EIO; - } - if (status.error_code) { - dev_err(&usb_dev->dev, "nonzero error code 0x%x\n", status.error_code); - return -EIO; - } - if (reg_writes_completed != num_writes) { - dev_err(&usb_dev->dev, "reg_writes_completed=%i, num_writes=%i\n", - reg_writes_completed, num_writes); - return -EIO; - } - if (ibsta) - *ibsta = status.ibsta; - return 0; -} - -// interface functions -static int ni_usb_read(struct gpib_board *board, u8 *buffer, size_t length, - int *end, size_t *bytes_read) -{ - int retval, parse_retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x20; - int in_data_length; - int usb_bytes_written = 0, usb_bytes_read = 0; - int i = 0; - int complement_count; - int actual_length; - struct ni_usb_status_block status; - static const int max_read_length = 0xffff; - struct ni_usb_register reg; - - *bytes_read = 0; - if (!ni_priv->bus_interface) - return -ENODEV; - if (length > max_read_length) - return -EINVAL; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = 0x0a; - out_data[i++] = ni_priv->eos_mode >> 8; - out_data[i++] = ni_priv->eos_char; - out_data[i++] = ni_usb_timeout_code(board->usec_timeout); - complement_count = length - 1; - complement_count = ~complement_count; - out_data[i++] = complement_count & 0xff; - out_data[i++] = (complement_count >> 8) & 0xff; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - i += ni_usb_bulk_register_write_header(&out_data[i], 2); - reg.device = NIUSB_SUBDEV_TNT4882; - reg.address = nec7210_to_tnt4882_offset(AUXMR); - reg.value = AUX_HLDI; - i += ni_usb_bulk_register_write(&out_data[i], reg); - reg.value = AUX_CLEAR_END; - i += ni_usb_bulk_register_write(&out_data[i], reg); - while (i % 4) // pad with zeros to 4-byte boundary - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &usb_bytes_written, 1000); - kfree(out_data); - if (retval || usb_bytes_written != i) { - if (retval == 0) - retval = -EIO; - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, usb_bytes_written=%i, i=%i\n", - retval, usb_bytes_written, i); - mutex_unlock(&ni_priv->addressed_transfer_lock); - return retval; - } - - in_data_length = (length / 30 + 1) * 0x20 + 0x20; - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &usb_bytes_read, - ni_usb_timeout_msecs(board->usec_timeout), 1); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if (retval == -ERESTARTSYS) { - } else if (retval) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, usb_bytes_read=%i\n", - retval, usb_bytes_read); - kfree(in_data); - return retval; - } - parse_retval = parse_board_ibrd_readback(in_data, &status, buffer, length, &actual_length); - if (parse_retval != usb_bytes_read) { - if (parse_retval >= 0) - parse_retval = -EIO; - dev_err(&usb_dev->dev, "retval=%i usb_bytes_read=%i\n", - parse_retval, usb_bytes_read); - kfree(in_data); - return parse_retval; - } - if (actual_length != length - status.count) { - dev_err(&usb_dev->dev, "actual_length=%i expected=%li\n", - actual_length, (long)(length - status.count)); - ni_usb_dump_raw_block(in_data, usb_bytes_read); - } - kfree(in_data); - switch (status.error_code) { - case NIUSB_NO_ERROR: - retval = 0; - break; - case NIUSB_ABORTED_ERROR: - /* - * this is expected if ni_usb_receive_bulk_msg got - * interrupted by a signal and returned -ERESTARTSYS - */ - break; - case NIUSB_ATN_STATE_ERROR: - if (status.ibsta & DCAS) { - retval = -EINTR; - } else { - retval = -EIO; - dev_dbg(&usb_dev->dev, "read when ATN set stat: 0x%06x\n", status.ibsta); - } - break; - case NIUSB_ADDRESSING_ERROR: - retval = -EIO; - break; - case NIUSB_TIMEOUT_ERROR: - retval = -ETIMEDOUT; - break; - case NIUSB_EOSMODE_ERROR: - dev_err(&usb_dev->dev, "driver bug, we should have been able to avoid NIUSB_EOSMODE_ERROR.\n"); - retval = -EINVAL; - break; - default: - dev_err(&usb_dev->dev, "unknown error code=%i\n", status.error_code); - retval = -EIO; - break; - } - ni_usb_soft_update_status(board, status.ibsta, 0); - if (status.ibsta & END) - *end = 1; - else - *end = 0; - *bytes_read = actual_length; - return retval; -} - -static int ni_usb_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, size_t *bytes_written) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - int out_data_length; - static const int in_data_length = 0x10; - int usb_bytes_written = 0, usb_bytes_read = 0; - int i = 0, j; - int complement_count; - struct ni_usb_status_block status; - static const int max_write_length = 0xffff; - - if (!ni_priv->bus_interface) - return -ENODEV; - if (length > max_write_length) - return -EINVAL; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data_length = length + 0x10; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = 0x0d; - complement_count = length - 1; - complement_count = ~complement_count; - out_data[i++] = complement_count & 0xff; - out_data[i++] = (complement_count >> 8) & 0xff; - out_data[i++] = ni_usb_timeout_code(board->usec_timeout); - out_data[i++] = 0x0; - out_data[i++] = 0x0; - if (send_eoi) - out_data[i++] = 0x8; - else - out_data[i++] = 0x0; - out_data[i++] = 0x0; - for (j = 0; j < length; j++) - out_data[i++] = buffer[j]; - while (i % 4) // pad with zeros to 4-byte boundary - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &usb_bytes_written, - ni_usb_timeout_msecs(board->usec_timeout)); - kfree(out_data); - if (retval || usb_bytes_written != i) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, usb_bytes_written=%i, i=%i\n", - retval, usb_bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &usb_bytes_read, - ni_usb_timeout_msecs(board->usec_timeout), 1); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if ((retval && retval != -ERESTARTSYS) || usb_bytes_read != 12) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, usb_bytes_read=%i\n", - retval, usb_bytes_read); - kfree(in_data); - return retval; - } - ni_usb_parse_status_block(in_data, &status); - kfree(in_data); - switch (status.error_code) { - case NIUSB_NO_ERROR: - retval = 0; - break; - case NIUSB_ABORTED_ERROR: - /* - * this is expected if ni_usb_receive_bulk_msg got - * interrupted by a signal and returned -ERESTARTSYS - */ - break; - case NIUSB_ADDRESSING_ERROR: - dev_err(&usb_dev->dev, "Addressing error retval %d error code=%i\n", - retval, status.error_code); - retval = -ENXIO; - break; - case NIUSB_NO_LISTENER_ERROR: - retval = -ECOMM; - break; - case NIUSB_TIMEOUT_ERROR: - retval = -ETIMEDOUT; - break; - default: - dev_err(&usb_dev->dev, "unknown error code=%i\n", status.error_code); - retval = -EPIPE; - break; - } - ni_usb_soft_update_status(board, status.ibsta, 0); - *bytes_written = length - status.count; - return retval; -} - -static int ni_usb_command_chunk(struct gpib_board *board, u8 *buffer, size_t length, - size_t *command_bytes_written) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - int out_data_length; - static const int in_data_length = 0x10; - int bytes_written = 0, bytes_read = 0; - int i = 0, j; - unsigned int complement_count; - struct ni_usb_status_block status; - // usb-b gives error 4 if you try to send more than 16 command bytes at once - static const int max_command_length = 0x10; - - *command_bytes_written = 0; - if (!ni_priv->bus_interface) - return -ENODEV; - if (length > max_command_length) - length = max_command_length; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data_length = length + 0x10; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = 0x0c; - complement_count = length - 1; - complement_count = ~complement_count; - out_data[i++] = complement_count; - out_data[i++] = 0x0; - out_data[i++] = ni_usb_timeout_code(board->usec_timeout); - for (j = 0; j < length; j++) - out_data[i++] = buffer[j]; - while (i % 4) // pad with zeros to 4-byte boundary - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, - ni_usb_timeout_msecs(board->usec_timeout)); - kfree(out_data); - if (retval || bytes_written != i) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, - ni_usb_timeout_msecs(board->usec_timeout), 1); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if ((retval && retval != -ERESTARTSYS) || bytes_read != 12) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return retval; - } - ni_usb_parse_status_block(in_data, &status); - kfree(in_data); - *command_bytes_written = length - status.count; - switch (status.error_code) { - case NIUSB_NO_ERROR: - break; - case NIUSB_ABORTED_ERROR: - /* - * this is expected if ni_usb_receive_bulk_msg got - * interrupted by a signal and returned -ERESTARTSYS - */ - break; - case NIUSB_NO_BUS_ERROR: - return -ENOTCONN; - case NIUSB_EOSMODE_ERROR: - dev_err(&usb_dev->dev, "got eosmode error. Driver bug?\n"); - return -EIO; - case NIUSB_TIMEOUT_ERROR: - return -ETIMEDOUT; - default: - dev_err(&usb_dev->dev, "unknown error code=%i\n", status.error_code); - return -EIO; - } - ni_usb_soft_update_status(board, status.ibsta, 0); - return 0; -} - -static int ni_usb_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - size_t count; - int retval; - - *bytes_written = 0; - while (*bytes_written < length) { - retval = ni_usb_command_chunk(board, buffer + *bytes_written, - length - *bytes_written, &count); - *bytes_written += count; - if (retval < 0) - return retval; - } - return 0; -} - -static int ni_usb_take_control(struct gpib_board *board, int synchronous) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x10; - static const int in_data_length = 0x10; - int bytes_written = 0, bytes_read = 0; - int i = 0; - struct ni_usb_status_block status; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - out_data[i++] = NIUSB_IBCAC_ID; - if (synchronous) - out_data[i++] = 0x1; - else - out_data[i++] = 0x0; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval || bytes_written != i) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, 1000, 1); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if ((retval && retval != -ERESTARTSYS) || bytes_read != 12) { - if (retval == 0) - retval = -EIO; - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return retval; - } - ni_usb_parse_status_block(in_data, &status); - kfree(in_data); - ni_usb_soft_update_status(board, status.ibsta, 0); - return retval; -} - -static int ni_usb_go_to_standby(struct gpib_board *board) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x10; - static const int in_data_length = 0x20; - int bytes_written = 0, bytes_read = 0; - int i = 0; - struct ni_usb_status_block status; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - - out_data[i++] = NIUSB_IBGTS_ID; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - - mutex_lock(&ni_priv->addressed_transfer_lock); - - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval || bytes_written != i) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, 1000, 0); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if (retval || bytes_read != 12) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return retval; - } - ni_usb_parse_status_block(in_data, &status); - kfree(in_data); - if (status.id != NIUSB_IBGTS_ID) - dev_err(&usb_dev->dev, "bug: status.id 0x%x != INUSB_IBGTS_ID\n", status.id); - ni_usb_soft_update_status(board, status.ibsta, 0); - return 0; -} - -static int ni_usb_request_system_control(struct gpib_board *board, int request_control) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[4]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - if (request_control) { - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = CMDR; - writes[i].value = SETSC; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CIFC; - i++; - } else { - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CREN; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CIFC; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_DSC; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = CMDR; - writes[i].value = CLRSC; - i++; - } - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - if (!request_control) - ni_priv->ren_state = 0; - ni_usb_soft_update_status(board, ibsta, 0); - return 0; -} - -// FIXME maybe the interface should have a "pulse interface clear" function that can return an error? -static void ni_usb_interface_clear(struct gpib_board *board, int assert) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x10; - static const int in_data_length = 0x10; - int bytes_written = 0, bytes_read = 0; - int i = 0; - struct ni_usb_status_block status; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); -// FIXME: we are going to pulse when assert is true, and ignore otherwise - if (assert == 0) - return; - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return; - out_data[i++] = NIUSB_IBSIC_ID; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval || bytes_written != i) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return; - } - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) - return; - - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, 1000, 0); - if (retval || bytes_read != 12) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return; - } - ni_usb_parse_status_block(in_data, &status); - kfree(in_data); - ni_usb_soft_update_status(board, status.ibsta, 0); -} - -static void ni_usb_remote_enable(struct gpib_board *board, int enable) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - struct ni_usb_register reg; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - reg.device = NIUSB_SUBDEV_TNT4882; - reg.address = nec7210_to_tnt4882_offset(AUXMR); - if (enable) - reg.value = AUX_SREN; - else - reg.value = AUX_CREN; - retval = ni_usb_write_registers(ni_priv, ®, 1, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return; //retval; - } - ni_priv->ren_state = enable; - ni_usb_soft_update_status(board, ibsta, 0); - return;// 0; -} - -static int ni_usb_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct ni_usb_priv *ni_priv = board->private_data; - - ni_priv->eos_char = eos_byte; - ni_priv->eos_mode |= REOS; - if (compare_8_bits) - ni_priv->eos_mode |= BIN; - else - ni_priv->eos_mode &= ~BIN; - return 0; -} - -static void ni_usb_disable_eos(struct gpib_board *board) -{ - struct ni_usb_priv *ni_priv = board->private_data; - /* - * adapter gets unhappy if you don't zero all the bits - * for the eos mode and eos char (returns error 4 on reads). - */ - ni_priv->eos_mode = 0; - ni_priv->eos_char = 0; -} - -static unsigned int ni_usb_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - static const int buffer_length = 8; - u8 *buffer; - struct ni_usb_status_block status; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - buffer = kmalloc(buffer_length, GFP_KERNEL); - if (!buffer) - return board->status; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_WAIT_REQUEST, USB_DIR_IN | - USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x200, 0x0, buffer, buffer_length, 1000); - if (retval != buffer_length) { - dev_err(&usb_dev->dev, "usb_control_msg returned %i\n", retval); - kfree(buffer); - return board->status; - } - ni_usb_parse_status_block(buffer, &status); - kfree(buffer); - ni_usb_soft_update_status(board, status.ibsta, clear_mask); - return board->status; -} - -// tells ni-usb to immediately stop an ongoing i/o operation -static void ni_usb_stop(struct ni_usb_priv *ni_priv) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - static const int buffer_length = 8; - u8 *buffer; - struct ni_usb_status_block status; - - buffer = kmalloc(buffer_length, GFP_KERNEL); - if (!buffer) - return; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_STOP_REQUEST, USB_DIR_IN | - USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0, 0x0, buffer, buffer_length, 1000); - if (retval != buffer_length) { - dev_err(&usb_dev->dev, "usb_control_msg returned %i\n", retval); - kfree(buffer); - return; - } - ni_usb_parse_status_block(buffer, &status); - kfree(buffer); -} - -static int ni_usb_primary_address(struct gpib_board *board, unsigned int address) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[2]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(ADR); - writes[i].value = address; - i++; - writes[i].device = NIUSB_SUBDEV_UNKNOWN2; - writes[i].address = 0x0; - writes[i].value = address; - i++; - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return 0; -} - -static int ni_usb_write_sad(struct ni_usb_register *writes, int address, int enable) -{ - unsigned int adr_bits, admr_bits; - int i = 0; - - adr_bits = HR_ARS; - admr_bits = HR_TRM0 | HR_TRM1; - if (enable) { - adr_bits |= address; - admr_bits |= HR_ADM1; - } else { - adr_bits |= HR_DT | HR_DL; - admr_bits |= HR_ADM0; - } - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(ADR); - writes[i].value = adr_bits; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(ADMR); - writes[i].value = admr_bits; - i++; - writes[i].device = NIUSB_SUBDEV_UNKNOWN2; - writes[i].address = 0x1; - writes[i].value = enable ? MSA(address) : 0x0; - i++; - return i; -} - -static int ni_usb_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[3]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - i += ni_usb_write_sad(writes, address, enable); - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return 0; -} - -static int ni_usb_parallel_poll(struct gpib_board *board, u8 *result) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x10; - static const int in_data_length = 0x20; - int bytes_written = 0, bytes_read = 0; - int i = 0; - int j = 0; - struct ni_usb_status_block status; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - - out_data[i++] = NIUSB_IBRPP_ID; - out_data[i++] = 0xf0; // FIXME: this should be the parallel poll timeout code - out_data[i++] = 0x0; - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - /*FIXME: 1000 should use parallel poll timeout (not supported yet)*/ - retval = ni_usb_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - - kfree(out_data); - if (retval || bytes_written != i) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) - return -ENOMEM; - - /*FIXME: should use parallel poll timeout (not supported yet)*/ - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, - &bytes_read, 1000, 1); - - if (retval && retval != -ERESTARTSYS) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return retval; - } - j += ni_usb_parse_status_block(in_data, &status); - *result = in_data[j++]; - kfree(in_data); - ni_usb_soft_update_status(board, status.ibsta, 0); - return retval; -} - -static void ni_usb_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[1]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = PPR | config; - i++; - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return;// retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return;// 0; -} - -static void ni_usb_parallel_poll_response(struct gpib_board *board, int ist) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[1]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - if (ist) - writes[i].value = AUX_SPPF; - else - writes[i].value = AUX_CPPF; - i++; - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return;// retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return;// 0; -} - -static void ni_usb_serial_poll_response(struct gpib_board *board, u8 status) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[1]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(SPMR); - writes[i].value = status; - i++; - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return;// retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return;// 0; -} - -static u8 ni_usb_serial_poll_status(struct gpib_board *board) -{ - return 0; -} - -static void ni_usb_return_to_local(struct gpib_board *board) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int i = 0; - struct ni_usb_register writes[1]; - unsigned int ibsta; - - if (!ni_priv->bus_interface) - return; // -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_RTL; - i++; - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return;// retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return;// 0; -} - -static int ni_usb_line_status(const struct gpib_board *board) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - u8 *out_data, *in_data; - static const int out_data_length = 0x20; - static const int in_data_length = 0x20; - int bytes_written = 0, bytes_read = 0; - int i = 0; - unsigned int bsr_bits; - int line_status = VALID_ALL; - // NI windows driver reads 0xd(HSSEL), 0xc (ARD0), 0x1f (BSR) - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) - return -ENOMEM; - - /* line status gets called during ibwait */ - retval = mutex_trylock(&ni_priv->addressed_transfer_lock); - - if (retval == 0) { - kfree(out_data); - return -EBUSY; - } - i += ni_usb_bulk_register_read_header(&out_data[i], 1); - i += ni_usb_bulk_register_read(&out_data[i], NIUSB_SUBDEV_TNT4882, BSR); - while (i % 4) - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - retval = ni_usb_nonblocking_send_bulk_msg(ni_priv, out_data, i, &bytes_written, 1000); - kfree(out_data); - if (retval || bytes_written != i) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - if (retval != -EAGAIN) - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%i\n", - retval, bytes_written, i); - return retval; - } - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) { - mutex_unlock(&ni_priv->addressed_transfer_lock); - return -ENOMEM; - } - retval = ni_usb_nonblocking_receive_bulk_msg(ni_priv, in_data, in_data_length, - &bytes_read, 1000, 0); - - mutex_unlock(&ni_priv->addressed_transfer_lock); - - if (retval) { - if (retval != -EAGAIN) - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - kfree(in_data); - return retval; - } - - ni_usb_parse_register_read_block(in_data, &bsr_bits, 1); - kfree(in_data); - if (bsr_bits & BCSR_REN_BIT) - line_status |= BUS_REN; - if (bsr_bits & BCSR_IFC_BIT) - line_status |= BUS_IFC; - if (bsr_bits & BCSR_SRQ_BIT) - line_status |= BUS_SRQ; - if (bsr_bits & BCSR_EOI_BIT) - line_status |= BUS_EOI; - if (bsr_bits & BCSR_NRFD_BIT) - line_status |= BUS_NRFD; - if (bsr_bits & BCSR_NDAC_BIT) - line_status |= BUS_NDAC; - if (bsr_bits & BCSR_DAV_BIT) - line_status |= BUS_DAV; - if (bsr_bits & BCSR_ATN_BIT) - line_status |= BUS_ATN; - return line_status; -} - -static int ni_usb_setup_t1_delay(struct ni_usb_register *reg, unsigned int nano_sec, - unsigned int *actual_ns) -{ - int i = 0; - - *actual_ns = 2000; - - reg[i].device = NIUSB_SUBDEV_TNT4882; - reg[i].address = nec7210_to_tnt4882_offset(AUXMR); - if (nano_sec <= 1100) { - reg[i].value = AUXRI | USTD | SISB; - *actual_ns = 1100; - } else { - reg[i].value = AUXRI | SISB; - } - i++; - reg[i].device = NIUSB_SUBDEV_TNT4882; - reg[i].address = nec7210_to_tnt4882_offset(AUXMR); - if (nano_sec <= 500) { - reg[i].value = AUXRB | HR_TRI; - *actual_ns = 500; - } else { - reg[i].value = AUXRB; - } - i++; - reg[i].device = NIUSB_SUBDEV_TNT4882; - reg[i].address = KEYREG; - if (nano_sec <= 350) { - reg[i].value = MSTD; - *actual_ns = 350; - } else { - reg[i].value = 0x0; - } - i++; - return i; -} - -static int ni_usb_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - struct ni_usb_register writes[3]; - unsigned int ibsta; - unsigned int actual_ns; - int i; - - if (!ni_priv->bus_interface) - return -ENODEV; - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - i = ni_usb_setup_t1_delay(writes, nano_sec, &actual_ns); - retval = ni_usb_write_registers(ni_priv, writes, i, &ibsta); - if (retval < 0) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - board->t1_nano_sec = actual_ns; - ni_usb_soft_update_status(board, ibsta, 0); - return actual_ns; -} - -static int ni_usb_allocate_private(struct gpib_board *board) -{ - struct ni_usb_priv *ni_priv; - - board->private_data = kmalloc(sizeof(struct ni_usb_priv), GFP_KERNEL); - if (!board->private_data) - return -ENOMEM; - ni_priv = board->private_data; - memset(ni_priv, 0, sizeof(struct ni_usb_priv)); - mutex_init(&ni_priv->bulk_transfer_lock); - mutex_init(&ni_priv->control_transfer_lock); - mutex_init(&ni_priv->interrupt_transfer_lock); - mutex_init(&ni_priv->addressed_transfer_lock); - return 0; -} - -static void ni_usb_free_private(struct ni_usb_priv *ni_priv) -{ - usb_free_urb(ni_priv->interrupt_urb); - kfree(ni_priv); -} - -#define NUM_INIT_WRITES 26 -static int ni_usb_setup_init(struct gpib_board *board, struct ni_usb_register *writes) -{ - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - unsigned int mask, actual_ns; - int i = 0; - - writes[i].device = NIUSB_SUBDEV_UNKNOWN3; - writes[i].address = 0x10; - writes[i].value = 0x0; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = CMDR; - writes[i].value = SOFT_RESET; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - mask = AUXRA | HR_HLDA; - if (ni_priv->eos_mode & BIN) - mask |= HR_BIN; - writes[i].value = mask; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = AUXCR; - writes[i].value = mask; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = HSSEL; - writes[i].value = TNT_ONE_CHIP_BIT; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CR; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = IMR0; - writes[i].value = TNT_IMR0_ALWAYS_BITS; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(IMR1); - writes[i].value = 0x0; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(IMR2); - writes[i].value = 0x0; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = IMR3; - writes[i].value = 0x0; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_HLDI; - i++; - - i += ni_usb_setup_t1_delay(&writes[i], board->t1_nano_sec, &actual_ns); - - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUXRG | NTNL_BIT; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = CMDR; - if (board->master) - mask = SETSC; // set system controller - else - mask = CLRSC; // clear system controller - writes[i].value = mask; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CIFC; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(ADR); - writes[i].value = board->pad; - i++; - writes[i].device = NIUSB_SUBDEV_UNKNOWN2; - writes[i].address = 0x0; - writes[i].value = board->pad; - i++; - - i += ni_usb_write_sad(&writes[i], board->sad, board->sad >= 0); - - writes[i].device = NIUSB_SUBDEV_UNKNOWN2; - writes[i].address = 0x2; // could this be a timeout ? - writes[i].value = 0xfd; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = 0xf; // undocumented address - writes[i].value = 0x11; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_PON; - i++; - writes[i].device = NIUSB_SUBDEV_TNT4882; - writes[i].address = nec7210_to_tnt4882_offset(AUXMR); - writes[i].value = AUX_CPPF; - i++; - if (i > NUM_INIT_WRITES) { - dev_err(&usb_dev->dev, "bug!, buffer overrun, i=%i\n", i); - return 0; - } - return i; -} - -static int ni_usb_init(struct gpib_board *board) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - struct ni_usb_register *writes; - unsigned int ibsta; - int writes_len; - - writes = kmalloc_array(NUM_INIT_WRITES, sizeof(*writes), GFP_KERNEL); - if (!writes) - return -ENOMEM; - - writes_len = ni_usb_setup_init(board, writes); - if (writes_len) - retval = ni_usb_write_registers(ni_priv, writes, writes_len, &ibsta); - else - return -EFAULT; - kfree(writes); - if (retval) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - ni_usb_soft_update_status(board, ibsta, 0); - return 0; -} - -static void ni_usb_interrupt_complete(struct urb *urb) -{ - struct gpib_board *board = urb->context; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - struct ni_usb_status_block status; - unsigned long flags; - - switch (urb->status) { - /* success */ - case 0: - break; - /* unlinked, don't resubmit */ - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - return; - default: /* other error, resubmit */ - retval = usb_submit_urb(ni_priv->interrupt_urb, GFP_ATOMIC); - if (retval) - dev_err(&usb_dev->dev, "failed to resubmit interrupt urb\n"); - return; - } - - ni_usb_parse_status_block(urb->transfer_buffer, &status); - - spin_lock_irqsave(&board->spinlock, flags); - ni_priv->monitored_ibsta_bits &= ~status.ibsta; - spin_unlock_irqrestore(&board->spinlock, flags); - - wake_up_interruptible(&board->wait); - - retval = usb_submit_urb(ni_priv->interrupt_urb, GFP_ATOMIC); - if (retval) - dev_err(&usb_dev->dev, "failed to resubmit interrupt urb\n"); -} - -static int ni_usb_set_interrupt_monitor(struct gpib_board *board, unsigned int monitored_bits) -{ - int retval; - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - static const int buffer_length = 8; - u8 *buffer; - struct ni_usb_status_block status; - unsigned long flags; - - buffer = kmalloc(buffer_length, GFP_KERNEL); - if (!buffer) - return -ENOMEM; - - spin_lock_irqsave(&board->spinlock, flags); - ni_priv->monitored_ibsta_bits = ni_usb_ibsta_monitor_mask & monitored_bits; - spin_unlock_irqrestore(&board->spinlock, flags); - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_WAIT_REQUEST, USB_DIR_IN | - USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x300, ni_usb_ibsta_monitor_mask & monitored_bits, - buffer, buffer_length, 1000); - if (retval != buffer_length) { - dev_err(&usb_dev->dev, "usb_control_msg returned %i\n", retval); - kfree(buffer); - return -1; - } - ni_usb_parse_status_block(buffer, &status); - kfree(buffer); - return 0; -} - -static int ni_usb_setup_urbs(struct gpib_board *board) -{ - struct ni_usb_priv *ni_priv = board->private_data; - struct usb_device *usb_dev; - int int_pipe; - int retval; - - if (ni_priv->interrupt_in_endpoint < 0) - return 0; - - mutex_lock(&ni_priv->interrupt_transfer_lock); - if (!ni_priv->bus_interface) { - mutex_unlock(&ni_priv->interrupt_transfer_lock); - return -ENODEV; - } - ni_priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ni_priv->interrupt_urb) { - mutex_unlock(&ni_priv->interrupt_transfer_lock); - return -ENOMEM; - } - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int_pipe = usb_rcvintpipe(usb_dev, ni_priv->interrupt_in_endpoint); - usb_fill_int_urb(ni_priv->interrupt_urb, usb_dev, int_pipe, ni_priv->interrupt_buffer, - sizeof(ni_priv->interrupt_buffer), &ni_usb_interrupt_complete, board, 1); - retval = usb_submit_urb(ni_priv->interrupt_urb, GFP_KERNEL); - mutex_unlock(&ni_priv->interrupt_transfer_lock); - if (retval) { - dev_err(&usb_dev->dev, "failed to submit first interrupt urb, retval=%i\n", retval); - return retval; - } - return 0; -} - -static void ni_usb_cleanup_urbs(struct ni_usb_priv *ni_priv) -{ - if (ni_priv && ni_priv->bus_interface) { - if (ni_priv->interrupt_urb) - usb_kill_urb(ni_priv->interrupt_urb); - if (ni_priv->bulk_urb) - usb_kill_urb(ni_priv->bulk_urb); - } -} - -static int ni_usb_b_read_serial_number(struct ni_usb_priv *ni_priv) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - u8 *out_data; - u8 *in_data; - static const int out_data_length = 0x20; - static const int in_data_length = 0x20; - int bytes_written = 0, bytes_read = 0; - int i = 0; - static const int num_reads = 4; - unsigned int results[4]; - int j; - unsigned int serial_number; - - in_data = kmalloc(in_data_length, GFP_KERNEL); - if (!in_data) - return -ENOMEM; - - out_data = kmalloc(out_data_length, GFP_KERNEL); - if (!out_data) { - kfree(in_data); - return -ENOMEM; - } - i += ni_usb_bulk_register_read_header(&out_data[i], num_reads); - i += ni_usb_bulk_register_read(&out_data[i], NIUSB_SUBDEV_UNKNOWN3, SERIAL_NUMBER_1_REG); - i += ni_usb_bulk_register_read(&out_data[i], NIUSB_SUBDEV_UNKNOWN3, SERIAL_NUMBER_2_REG); - i += ni_usb_bulk_register_read(&out_data[i], NIUSB_SUBDEV_UNKNOWN3, SERIAL_NUMBER_3_REG); - i += ni_usb_bulk_register_read(&out_data[i], NIUSB_SUBDEV_UNKNOWN3, SERIAL_NUMBER_4_REG); - while (i % 4) - out_data[i++] = 0x0; - i += ni_usb_bulk_termination(&out_data[i]); - retval = ni_usb_send_bulk_msg(ni_priv, out_data, out_data_length, &bytes_written, 1000); - if (retval) { - dev_err(&usb_dev->dev, "send_bulk_msg returned %i, bytes_written=%i, i=%li\n", - retval, bytes_written, (long)out_data_length); - goto serial_out; - } - retval = ni_usb_receive_bulk_msg(ni_priv, in_data, in_data_length, &bytes_read, 1000, 0); - if (retval) { - dev_err(&usb_dev->dev, "receive_bulk_msg returned %i, bytes_read=%i\n", - retval, bytes_read); - ni_usb_dump_raw_block(in_data, bytes_read); - goto serial_out; - } - if (ARRAY_SIZE(results) < num_reads) { - dev_err(&usb_dev->dev, "serial number eetup bug\n"); - retval = -EINVAL; - goto serial_out; - } - ni_usb_parse_register_read_block(in_data, results, num_reads); - serial_number = 0; - for (j = 0; j < num_reads; ++j) - serial_number |= (results[j] & 0xff) << (8 * j); - dev_dbg(&usb_dev->dev, "board serial number is 0x%x\n", serial_number); - retval = 0; -serial_out: - kfree(in_data); - kfree(out_data); - return retval; -} - -static int ni_usb_hs_wait_for_ready(struct ni_usb_priv *ni_priv) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - static const int buffer_size = 0x10; - static const int timeout = 50; - static const int msec_sleep_duration = 100; - int i; int retval; - int j; - int unexpected = 0; - unsigned int serial_number; - u8 *buffer; - - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) - return -ENOMEM; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_SERIAL_NUMBER_REQUEST, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0, 0x0, buffer, buffer_size, 1000); - if (retval < 0) { - dev_err(&usb_dev->dev, "usb_control_msg request 0x%x returned %i\n", - NI_USB_SERIAL_NUMBER_REQUEST, retval); - goto ready_out; - } - j = 0; - if (buffer[j] != NI_USB_SERIAL_NUMBER_REQUEST) { - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x%x\n", - j, (int)buffer[j], NI_USB_SERIAL_NUMBER_REQUEST); - unexpected = 1; - } - if (unexpected) - ni_usb_dump_raw_block(buffer, retval); - // NI-USB-HS+ pads the serial with 0x0 to make 16 bytes - if (retval != 5 && retval != 16) { - dev_err(&usb_dev->dev, "received unexpected number of bytes = %i, expected 5 or 16\n", - retval); - ni_usb_dump_raw_block(buffer, retval); - } - serial_number = 0; - serial_number |= buffer[++j]; - serial_number |= (buffer[++j] << 8); - serial_number |= (buffer[++j] << 16); - serial_number |= (buffer[++j] << 24); - dev_dbg(&usb_dev->dev, "board serial number is 0x%x\n", serial_number); - for (i = 0; i < timeout; ++i) { - int ready = 0; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_POLL_READY_REQUEST, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0, 0x0, buffer, buffer_size, 100); - if (retval < 0) { - dev_err(&usb_dev->dev, "usb_control_msg request 0x%x returned %i\n", - NI_USB_POLL_READY_REQUEST, retval); - goto ready_out; - } - j = 0; - unexpected = 0; - if (buffer[j] != NI_USB_POLL_READY_REQUEST) { // [0] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x%x\n", - j, (int)buffer[j], NI_USB_POLL_READY_REQUEST); - unexpected = 1; - } - ++j; - if (buffer[j] != 0x1 && buffer[j] != 0x0) { // [1] HS+ sends 0x0 - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x1 or 0x0\n", - j, (int)buffer[j]); - unexpected = 1; - } - if (buffer[++j] != 0x0) { // [2] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x%x\n", - j, (int)buffer[j], 0x0); - unexpected = 1; - } - ++j; - /* - * MC usb-488 (and sometimes NI-USB-HS?) sends 0x8 here; MC usb-488A sends 0x7 here - * NI-USB-HS+ sends 0x0 - */ - if (buffer[j] != 0x1 && buffer[j] != 0x8 && buffer[j] != 0x7 && buffer[j] != 0x0) { - // [3] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x0, 0x1, 0x7 or 0x8\n", - j, (int)buffer[j]); - unexpected = 1; - } - ++j; - // NI-USB-HS+ sends 0 here - if (buffer[j] != 0x30 && buffer[j] != 0x0) { // [4] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x0 or 0x30\n", - j, (int)buffer[j]); - unexpected = 1; - } - ++j; - // MC usb-488 (and sometimes NI-USB-HS?) and NI-USB-HS+ sends 0x0 here - if (buffer[j] != 0x1 && buffer[j] != 0x0) { // [5] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x1 or 0x0\n", - j, (int)buffer[j]); - unexpected = 1; - } - if (buffer[++j] != 0x0) { // [6] - ready = 1; - // NI-USB-HS+ sends 0xf or 0x19 here - if (buffer[j] != 0x2 && buffer[j] != 0xe && buffer[j] != 0xf && - buffer[j] != 0x16 && buffer[j] != 0x19) { - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x2, 0xe, 0xf, 0x16 or 0x19\n", - j, (int)buffer[j]); - unexpected = 1; - } - } - if (buffer[++j] != 0x0) { // [7] - ready = 1; - // MC usb-488 sends 0x5 here; MC usb-488A sends 0x6 here - if (buffer[j] != 0x3 && buffer[j] != 0x5 && buffer[j] != 0x6 && - buffer[j] != 0x8) { - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x3 or 0x5, 0x6 or 0x08\n", - j, (int)buffer[j]); - unexpected = 1; - } - } - ++j; - if (buffer[j] != 0x0 && buffer[j] != 0x2) { // [8] MC usb-488 sends 0x2 here - dev_err(&usb_dev->dev, " unexpected data: buffer[%i]=0x%x, expected 0x0 or 0x2\n", - j, (int)buffer[j]); - unexpected = 1; - } - ++j; - // MC usb-488A and NI-USB-HS sends 0x3 here; NI-USB-HS+ sends 0x30 here - if (buffer[j] != 0x0 && buffer[j] != 0x3 && buffer[j] != 0x30) { // [9] - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x0, 0x3 or 0x30\n", - j, (int)buffer[j]); - unexpected = 1; - } - if (buffer[++j] != 0x0) { // [10] MC usb-488 sends 0x7 here, new HS+ sends 0x59 - ready = 1; - if (buffer[j] != 0x96 && buffer[j] != 0x7 && buffer[j] != 0x6e && - buffer[j] != 0x59) { - dev_err(&usb_dev->dev, "unexpected data: buffer[%i]=0x%x, expected 0x96, 0x07, 0x6e or 0x59\n", - j, (int)buffer[j]); - unexpected = 1; - } - } - if (unexpected) - ni_usb_dump_raw_block(buffer, retval); - if (ready) - break; - retval = msleep_interruptible(msec_sleep_duration); - if (retval) { - retval = -ERESTARTSYS; - goto ready_out; - } - } - retval = 0; - -ready_out: - kfree(buffer); - dev_dbg(&usb_dev->dev, "exit retval=%d\n", retval); - return retval; -} - -/* - * This does some extra init for HS+ models, as observed on Windows. One of the - * control requests causes the LED to stop blinking. - * I'm not sure what the other 2 requests do. None of these requests are actually required - * for the adapter to work, maybe they do some init for the analyzer interface - * (which we don't use). - */ -static int ni_usb_hs_plus_extra_init(struct ni_usb_priv *ni_priv) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - u8 *buffer; - static const int buffer_size = 16; - int transfer_size; - - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) - return -ENOMEM; - do { - transfer_size = 16; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_HS_PLUS_0x48_REQUEST, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0, 0x0, buffer, transfer_size, 1000); - if (retval < 0) { - dev_err(&usb_dev->dev, "usb_control_msg request 0x%x returned %i\n", - NI_USB_HS_PLUS_0x48_REQUEST, retval); - break; - } - // expected response data: 48 f3 30 00 00 00 00 00 00 00 00 00 00 00 00 00 - if (buffer[0] != NI_USB_HS_PLUS_0x48_REQUEST) - dev_err(&usb_dev->dev, "unexpected data: buffer[0]=0x%x, expected 0x%x\n", - (int)buffer[0], NI_USB_HS_PLUS_0x48_REQUEST); - - transfer_size = 2; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_HS_PLUS_LED_REQUEST, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x1, 0x0, buffer, transfer_size, 1000); - if (retval < 0) { - dev_err(&usb_dev->dev, "usb_control_msg request 0x%x returned %i\n", - NI_USB_HS_PLUS_LED_REQUEST, retval); - break; - } - // expected response data: 4b 00 - if (buffer[0] != NI_USB_HS_PLUS_LED_REQUEST) - dev_err(&usb_dev->dev, "unexpected data: buffer[0]=0x%x, expected 0x%x\n", - (int)buffer[0], NI_USB_HS_PLUS_LED_REQUEST); - - transfer_size = 9; - - retval = ni_usb_receive_control_msg(ni_priv, NI_USB_HS_PLUS_0xf8_REQUEST, - USB_DIR_IN | USB_TYPE_VENDOR | - USB_RECIP_INTERFACE, - 0x0, 0x1, buffer, transfer_size, 1000); - if (retval < 0) { - dev_err(&usb_dev->dev, "usb_control_msg request 0x%x returned %i\n", - NI_USB_HS_PLUS_0xf8_REQUEST, retval); - break; - } - // expected response data: f8 01 00 00 00 01 00 00 00 - if (buffer[0] != NI_USB_HS_PLUS_0xf8_REQUEST) - dev_err(&usb_dev->dev, "unexpected data: buffer[0]=0x%x, expected 0x%x\n", - (int)buffer[0], NI_USB_HS_PLUS_0xf8_REQUEST); - } while (0); - - // cleanup - kfree(buffer); - return retval; -} - -static inline int ni_usb_device_match(struct usb_interface *interface, - const struct gpib_board_config *config) -{ - if (gpib_match_device_path(&interface->dev, config->device_path) == 0) - return 0; - return 1; -} - -static int ni_usb_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - int retval; - int i, index; - struct ni_usb_priv *ni_priv; - int product_id; - struct usb_device *usb_dev; - - mutex_lock(&ni_usb_hotplug_lock); - retval = ni_usb_allocate_private(board); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - ni_priv = board->private_data; - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) { - if (ni_usb_driver_interfaces[i] && - !usb_get_intfdata(ni_usb_driver_interfaces[i]) && - ni_usb_device_match(ni_usb_driver_interfaces[i], config)) { - ni_priv->bus_interface = ni_usb_driver_interfaces[i]; - usb_set_intfdata(ni_usb_driver_interfaces[i], board); - usb_dev = interface_to_usbdev(ni_priv->bus_interface); - index = i; - break; - } - } - if (i == MAX_NUM_NI_USB_INTERFACES) { - mutex_unlock(&ni_usb_hotplug_lock); - dev_err(board->gpib_dev, "No supported adapters found, have you loaded its firmware?\n"); - return -ENODEV; - } - if (usb_reset_configuration(interface_to_usbdev(ni_priv->bus_interface))) - dev_err(&usb_dev->dev, "usb_reset_configuration() failed.\n"); - - product_id = le16_to_cpu(usb_dev->descriptor.idProduct); - ni_priv->product_id = product_id; - - timer_setup(&ni_priv->bulk_timer, ni_usb_timeout_handler, 0); - - switch (product_id) { - case USB_DEVICE_ID_NI_USB_B: - ni_priv->bulk_out_endpoint = NIUSB_B_BULK_OUT_ENDPOINT; - ni_priv->bulk_in_endpoint = NIUSB_B_BULK_IN_ENDPOINT; - ni_priv->interrupt_in_endpoint = NIUSB_B_INTERRUPT_IN_ENDPOINT; - ni_usb_b_read_serial_number(ni_priv); - break; - case USB_DEVICE_ID_NI_USB_HS: - case USB_DEVICE_ID_MC_USB_488: - case USB_DEVICE_ID_KUSB_488A: - ni_priv->bulk_out_endpoint = NIUSB_HS_BULK_OUT_ENDPOINT; - ni_priv->bulk_in_endpoint = NIUSB_HS_BULK_IN_ENDPOINT; - ni_priv->interrupt_in_endpoint = NIUSB_HS_INTERRUPT_IN_ENDPOINT; - retval = ni_usb_hs_wait_for_ready(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - break; - case USB_DEVICE_ID_NI_USB_HS_PLUS: - ni_priv->bulk_out_endpoint = NIUSB_HS_PLUS_BULK_OUT_ENDPOINT; - ni_priv->bulk_in_endpoint = NIUSB_HS_PLUS_BULK_IN_ENDPOINT; - ni_priv->interrupt_in_endpoint = NIUSB_HS_PLUS_INTERRUPT_IN_ENDPOINT; - retval = ni_usb_hs_wait_for_ready(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - retval = ni_usb_hs_plus_extra_init(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - break; - default: - mutex_unlock(&ni_usb_hotplug_lock); - dev_err(&usb_dev->dev, "\tDriver bug: unknown endpoints for usb device id %x\n", - product_id); - return -EINVAL; - } - - retval = ni_usb_setup_urbs(board); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - retval = ni_usb_set_interrupt_monitor(board, 0); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - - board->t1_nano_sec = 500; - - retval = ni_usb_init(board); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - retval = ni_usb_set_interrupt_monitor(board, ni_usb_ibsta_monitor_mask); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - - mutex_unlock(&ni_usb_hotplug_lock); - dev_info(&usb_dev->dev, - "bus %d dev num %d attached to gpib%d, intf %i\n", - usb_dev->bus->busnum, usb_dev->devnum, board->minor, index); - return retval; -} - -static int ni_usb_shutdown_hardware(struct ni_usb_priv *ni_priv) -{ - struct usb_device *usb_dev = interface_to_usbdev(ni_priv->bus_interface); - int retval; - struct ni_usb_register writes[2]; - static const int writes_length = ARRAY_SIZE(writes); - unsigned int ibsta; - - writes[0].device = NIUSB_SUBDEV_TNT4882; - writes[0].address = nec7210_to_tnt4882_offset(AUXMR); - writes[0].value = AUX_CR; - writes[1].device = NIUSB_SUBDEV_UNKNOWN3; - writes[1].address = 0x10; - writes[1].value = 0x0; - retval = ni_usb_write_registers(ni_priv, writes, writes_length, &ibsta); - if (retval) { - dev_err(&usb_dev->dev, "register write failed, retval=%i\n", retval); - return retval; - } - return 0; -} - -static void ni_usb_detach(struct gpib_board *board) -{ - struct ni_usb_priv *ni_priv; - - mutex_lock(&ni_usb_hotplug_lock); - /* - * under windows, software unplug does chip_reset nec7210 aux command, - * then writes 0x0 to address 0x10 of device 3 - */ - ni_priv = board->private_data; - if (ni_priv) { - if (ni_priv->bus_interface) { - ni_usb_set_interrupt_monitor(board, 0); - ni_usb_shutdown_hardware(ni_priv); - usb_set_intfdata(ni_priv->bus_interface, NULL); - } - mutex_lock(&ni_priv->bulk_transfer_lock); - mutex_lock(&ni_priv->control_transfer_lock); - mutex_lock(&ni_priv->interrupt_transfer_lock); - ni_usb_cleanup_urbs(ni_priv); - ni_usb_free_private(ni_priv); - } - mutex_unlock(&ni_usb_hotplug_lock); -} - -static struct gpib_interface ni_usb_gpib_interface = { - .name = "ni_usb_b", - .attach = ni_usb_attach, - .detach = ni_usb_detach, - .read = ni_usb_read, - .write = ni_usb_write, - .command = ni_usb_command, - .take_control = ni_usb_take_control, - .go_to_standby = ni_usb_go_to_standby, - .request_system_control = ni_usb_request_system_control, - .interface_clear = ni_usb_interface_clear, - .remote_enable = ni_usb_remote_enable, - .enable_eos = ni_usb_enable_eos, - .disable_eos = ni_usb_disable_eos, - .parallel_poll = ni_usb_parallel_poll, - .parallel_poll_configure = ni_usb_parallel_poll_configure, - .parallel_poll_response = ni_usb_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = ni_usb_line_status, - .update_status = ni_usb_update_status, - .primary_address = ni_usb_primary_address, - .secondary_address = ni_usb_secondary_address, - .serial_poll_response = ni_usb_serial_poll_response, - .serial_poll_status = ni_usb_serial_poll_status, - .t1_delay = ni_usb_t1_delay, - .return_to_local = ni_usb_return_to_local, - .skip_check_for_command_acceptors = 1 -}; - -// Table with the USB-devices: just now only testing IDs -static struct usb_device_id ni_usb_driver_device_table[] = { - {USB_DEVICE(USB_VENDOR_ID_NI, USB_DEVICE_ID_NI_USB_B)}, - {USB_DEVICE(USB_VENDOR_ID_NI, USB_DEVICE_ID_NI_USB_HS)}, - // gpib-usb-hs+ has a second interface for the analyzer, which we ignore - {USB_DEVICE_INTERFACE_NUMBER(USB_VENDOR_ID_NI, USB_DEVICE_ID_NI_USB_HS_PLUS, 0)}, - {USB_DEVICE(USB_VENDOR_ID_NI, USB_DEVICE_ID_KUSB_488A)}, - {USB_DEVICE(USB_VENDOR_ID_NI, USB_DEVICE_ID_MC_USB_488)}, - {} /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, ni_usb_driver_device_table); - -static int ni_usb_driver_probe(struct usb_interface *interface, const struct usb_device_id *id) -{ - struct usb_device *usb_dev = interface_to_usbdev(interface); - int i; - char *path; - static const int path_length = 1024; - - mutex_lock(&ni_usb_hotplug_lock); - usb_get_dev(usb_dev); - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) { - if (!ni_usb_driver_interfaces[i]) { - ni_usb_driver_interfaces[i] = interface; - usb_set_intfdata(interface, NULL); - break; - } - } - if (i == MAX_NUM_NI_USB_INTERFACES) { - usb_put_dev(usb_dev); - mutex_unlock(&ni_usb_hotplug_lock); - dev_err(&usb_dev->dev, "ni_usb_driver_interfaces[] full\n"); - return -1; - } - path = kmalloc(path_length, GFP_KERNEL); - if (!path) { - usb_put_dev(usb_dev); - mutex_unlock(&ni_usb_hotplug_lock); - return -ENOMEM; - } - usb_make_path(usb_dev, path, path_length); - dev_info(&usb_dev->dev, "probe succeeded for path: %s\n", path); - kfree(path); - mutex_unlock(&ni_usb_hotplug_lock); - return 0; -} - -static void ni_usb_driver_disconnect(struct usb_interface *interface) -{ - struct usb_device *usb_dev = interface_to_usbdev(interface); - int i; - - mutex_lock(&ni_usb_hotplug_lock); - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) { - if (ni_usb_driver_interfaces[i] == interface) { - struct gpib_board *board = usb_get_intfdata(interface); - - if (board) { - struct ni_usb_priv *ni_priv = board->private_data; - - if (ni_priv) { - mutex_lock(&ni_priv->bulk_transfer_lock); - mutex_lock(&ni_priv->control_transfer_lock); - mutex_lock(&ni_priv->interrupt_transfer_lock); - ni_usb_cleanup_urbs(ni_priv); - ni_priv->bus_interface = NULL; - mutex_unlock(&ni_priv->interrupt_transfer_lock); - mutex_unlock(&ni_priv->control_transfer_lock); - mutex_unlock(&ni_priv->bulk_transfer_lock); - } - } - ni_usb_driver_interfaces[i] = NULL; - break; - } - } - if (i == MAX_NUM_NI_USB_INTERFACES) - dev_err(&usb_dev->dev, "unable to find interface bug?\n"); - usb_put_dev(usb_dev); - mutex_unlock(&ni_usb_hotplug_lock); -} - -static int ni_usb_driver_suspend(struct usb_interface *interface, pm_message_t message) -{ - struct usb_device *usb_dev = interface_to_usbdev(interface); - struct gpib_board *board; - int i, retval; - - mutex_lock(&ni_usb_hotplug_lock); - - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) { - if (ni_usb_driver_interfaces[i] == interface) { - board = usb_get_intfdata(interface); - if (board) - break; - } - } - if (i == MAX_NUM_NI_USB_INTERFACES) { - mutex_unlock(&ni_usb_hotplug_lock); - return 0; - } - - struct ni_usb_priv *ni_priv = board->private_data; - - if (ni_priv) { - ni_usb_set_interrupt_monitor(board, 0); - retval = ni_usb_shutdown_hardware(ni_priv); - if (retval) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - if (ni_priv->interrupt_urb) { - mutex_lock(&ni_priv->interrupt_transfer_lock); - ni_usb_cleanup_urbs(ni_priv); - mutex_unlock(&ni_priv->interrupt_transfer_lock); - } - dev_dbg(&usb_dev->dev, - "bus %d dev num %d gpib%d, interface %i suspended\n", - usb_dev->bus->busnum, usb_dev->devnum, board->minor, i); - } - - mutex_unlock(&ni_usb_hotplug_lock); - return 0; -} - -static int ni_usb_driver_resume(struct usb_interface *interface) -{ - struct usb_device *usb_dev = interface_to_usbdev(interface); - - struct gpib_board *board; - int i, retval; - - mutex_lock(&ni_usb_hotplug_lock); - - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) { - if (ni_usb_driver_interfaces[i] == interface) { - board = usb_get_intfdata(interface); - if (board) - break; - } - } - if (i == MAX_NUM_NI_USB_INTERFACES) { - mutex_unlock(&ni_usb_hotplug_lock); - return 0; - } - - struct ni_usb_priv *ni_priv = board->private_data; - - if (ni_priv) { - if (ni_priv->interrupt_urb) { - mutex_lock(&ni_priv->interrupt_transfer_lock); - retval = usb_submit_urb(ni_priv->interrupt_urb, GFP_KERNEL); - if (retval) { - dev_err(&usb_dev->dev, "resume failed to resubmit interrupt urb, retval=%i\n", - retval); - mutex_unlock(&ni_priv->interrupt_transfer_lock); - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - mutex_unlock(&ni_priv->interrupt_transfer_lock); - } else { - dev_err(&usb_dev->dev, "bug! resume int urb not set up\n"); - mutex_unlock(&ni_usb_hotplug_lock); - return -EINVAL; - } - - switch (ni_priv->product_id) { - case USB_DEVICE_ID_NI_USB_B: - ni_usb_b_read_serial_number(ni_priv); - break; - case USB_DEVICE_ID_NI_USB_HS: - case USB_DEVICE_ID_MC_USB_488: - case USB_DEVICE_ID_KUSB_488A: - retval = ni_usb_hs_wait_for_ready(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - break; - case USB_DEVICE_ID_NI_USB_HS_PLUS: - retval = ni_usb_hs_wait_for_ready(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - retval = ni_usb_hs_plus_extra_init(ni_priv); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - break; - default: - mutex_unlock(&ni_usb_hotplug_lock); - dev_err(&usb_dev->dev, "\tDriver bug: unknown endpoints for usb device id\n"); - return -EINVAL; - } - - retval = ni_usb_set_interrupt_monitor(board, 0); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - - retval = ni_usb_init(board); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - retval = ni_usb_set_interrupt_monitor(board, ni_usb_ibsta_monitor_mask); - if (retval < 0) { - mutex_unlock(&ni_usb_hotplug_lock); - return retval; - } - if (board->master) - ni_usb_interface_clear(board, 1); // this is a pulsed action - if (ni_priv->ren_state) - ni_usb_remote_enable(board, 1); - - dev_dbg(&usb_dev->dev, - "bus %d dev num %d gpib%d, interface %i resumed\n", - usb_dev->bus->busnum, usb_dev->devnum, board->minor, i); - } - - mutex_unlock(&ni_usb_hotplug_lock); - return 0; -} - -static struct usb_driver ni_usb_bus_driver = { - .name = DRV_NAME, - .probe = ni_usb_driver_probe, - .disconnect = ni_usb_driver_disconnect, - .suspend = ni_usb_driver_suspend, - .resume = ni_usb_driver_resume, - .id_table = ni_usb_driver_device_table, -}; - -static int __init ni_usb_init_module(void) -{ - int i; - int ret; - - for (i = 0; i < MAX_NUM_NI_USB_INTERFACES; i++) - ni_usb_driver_interfaces[i] = NULL; - - ret = usb_register(&ni_usb_bus_driver); - if (ret) { - pr_err("usb_register failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&ni_usb_gpib_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - return ret; - } - - return 0; -} - -static void __exit ni_usb_exit_module(void) -{ - gpib_unregister_driver(&ni_usb_gpib_interface); - usb_deregister(&ni_usb_bus_driver); -} - -module_init(ni_usb_init_module); -module_exit(ni_usb_exit_module); diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.h b/drivers/staging/gpib/ni_usb/ni_usb_gpib.h deleted file mode 100644 index 688f5e08792f..000000000000 --- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.h +++ /dev/null @@ -1,226 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/*************************************************************************** - * copyright : (C) 2004 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _NI_USB_GPIB_H -#define _NI_USB_GPIB_H - -#include <linux/mutex.h> -#include <linux/semaphore.h> -#include <linux/usb.h> -#include <linux/timer.h> -#include "gpibP.h" - -enum { - USB_VENDOR_ID_NI = 0x3923 -}; - -enum { - USB_DEVICE_ID_NI_USB_B = 0x702a, - USB_DEVICE_ID_NI_USB_B_PREINIT = 0x702b, // device id before firmware is loaded - USB_DEVICE_ID_NI_USB_HS = 0x709b, - USB_DEVICE_ID_NI_USB_HS_PLUS = 0x7618, - USB_DEVICE_ID_KUSB_488A = 0x725c, - USB_DEVICE_ID_MC_USB_488 = 0x725d -}; - -enum ni_usb_device { - NIUSB_SUBDEV_TNT4882 = 1, - NIUSB_SUBDEV_UNKNOWN2 = 2, - NIUSB_SUBDEV_UNKNOWN3 = 3, -}; - -enum endpoint_addresses { - NIUSB_B_BULK_OUT_ENDPOINT = 0x2, - NIUSB_B_BULK_IN_ENDPOINT = 0x2, - NIUSB_B_BULK_IN_ALT_ENDPOINT = 0x6, - NIUSB_B_INTERRUPT_IN_ENDPOINT = 0x4, -}; - -enum hs_enpoint_addresses { - NIUSB_HS_BULK_OUT_ENDPOINT = 0x2, - NIUSB_HS_BULK_OUT_ALT_ENDPOINT = 0x6, - NIUSB_HS_BULK_IN_ENDPOINT = 0x4, - NIUSB_HS_BULK_IN_ALT_ENDPOINT = 0x8, - NIUSB_HS_INTERRUPT_IN_ENDPOINT = 0x1, -}; - -enum hs_plus_endpoint_addresses { - NIUSB_HS_PLUS_BULK_OUT_ENDPOINT = 0x1, - NIUSB_HS_PLUS_BULK_OUT_ALT_ENDPOINT = 0x4, - NIUSB_HS_PLUS_BULK_IN_ENDPOINT = 0x2, - NIUSB_HS_PLUS_BULK_IN_ALT_ENDPOINT = 0x5, - NIUSB_HS_PLUS_INTERRUPT_IN_ENDPOINT = 0x3, -}; - -struct ni_usb_urb_ctx { - struct completion complete; - unsigned timed_out : 1; -}; - -// struct which defines private_data for ni_usb devices -struct ni_usb_priv { - struct usb_interface *bus_interface; - int bulk_out_endpoint; - int bulk_in_endpoint; - int interrupt_in_endpoint; - u8 eos_char; - unsigned short eos_mode; - unsigned int monitored_ibsta_bits; - struct urb *bulk_urb; - struct urb *interrupt_urb; - u8 interrupt_buffer[0x11]; - struct mutex addressed_transfer_lock; // protect transfer lock - struct mutex bulk_transfer_lock; // protect bulk message sends - struct mutex control_transfer_lock; // protect control messages - struct mutex interrupt_transfer_lock; // protect interrupt messages - struct timer_list bulk_timer; - struct ni_usb_urb_ctx context; - int product_id; - unsigned short ren_state; -}; - -struct ni_usb_status_block { - short id; - unsigned short ibsta; - short error_code; - unsigned short count; -}; - -struct ni_usb_register { - enum ni_usb_device device; - short address; - unsigned short value; -}; - -enum ni_usb_bulk_ids { - NIUSB_IBCAC_ID = 0x1, - NIUSB_UNKNOWN3_ID = 0x3, // device level function id? - NIUSB_TERM_ID = 0x4, - NIUSB_IBGTS_ID = 0x6, - NIUSB_IBRPP_ID = 0x7, - NIUSB_REG_READ_ID = 0x8, - NIUSB_REG_WRITE_ID = 0x9, - NIUSB_IBSIC_ID = 0xf, - NIUSB_REGISTER_READ_DATA_START_ID = 0x34, - NIUSB_REGISTER_READ_DATA_END_ID = 0x35, - NIUSB_IBRD_DATA_ID = 0x36, - NIUSB_IBRD_EXTENDED_DATA_ID = 0x37, - NIUSB_IBRD_STATUS_ID = 0x38 -}; - -enum ni_usb_error_codes { - NIUSB_NO_ERROR = 0, - /* - * NIUSB_ABORTED_ERROR occurs when I/O is interrupted early by - * doing a NI_USB_STOP_REQUEST on the control endpoint. - */ - NIUSB_ABORTED_ERROR = 1, - /* - * NIUSB_READ_ATN_ERROR occurs when you do a board read while - * ATN is set - */ - NIUSB_ATN_STATE_ERROR = 2, - /* - * NIUSB_ADDRESSING_ERROR occurs when you do a board - * read/write as CIC but are not in LACS/TACS - */ - NIUSB_ADDRESSING_ERROR = 3, - /* - * NIUSB_EOSMODE_ERROR occurs on reads if any eos mode or char - * bits are set when REOS is not set. - * Have also seen error 4 if you try to send more than 16 - * command bytes at once on a usb-b. - */ - NIUSB_EOSMODE_ERROR = 4, - /* - * NIUSB_NO_BUS_ERROR occurs when you try to write a command - * byte but there are no devices connected to the gpib bus - */ - NIUSB_NO_BUS_ERROR = 5, - /* - * NIUSB_NO_LISTENER_ERROR occurs when you do a board write as - * CIC with no listener - */ - NIUSB_NO_LISTENER_ERROR = 8, - /* get NIUSB_TIMEOUT_ERROR on board read/write timeout */ - NIUSB_TIMEOUT_ERROR = 10, -}; - -enum ni_usb_control_requests { - NI_USB_STOP_REQUEST = 0x20, - NI_USB_WAIT_REQUEST = 0x21, - NI_USB_POLL_READY_REQUEST = 0x40, - NI_USB_SERIAL_NUMBER_REQUEST = 0x41, - NI_USB_HS_PLUS_0x48_REQUEST = 0x48, - NI_USB_HS_PLUS_LED_REQUEST = 0x4b, - NI_USB_HS_PLUS_0xf8_REQUEST = 0xf8 -}; - -static const unsigned int ni_usb_ibsta_monitor_mask = - SRQI | LOK | REM | CIC | ATN | TACS | LACS | DTAS | DCAS; - -static inline int nec7210_to_tnt4882_offset(int offset) -{ - return 2 * offset; -}; - -static inline int ni_usb_bulk_termination(u8 *buffer) -{ - int i = 0; - - buffer[i++] = NIUSB_TERM_ID; - buffer[i++] = 0x0; - buffer[i++] = 0x0; - buffer[i++] = 0x0; - return i; -} - -enum ni_usb_unknown3_register { - SERIAL_NUMBER_4_REG = 0x8, - SERIAL_NUMBER_3_REG = 0x9, - SERIAL_NUMBER_2_REG = 0xa, - SERIAL_NUMBER_1_REG = 0xb, -}; - -static inline int ni_usb_bulk_register_write_header(u8 *buffer, int num_writes) -{ - int i = 0; - - buffer[i++] = NIUSB_REG_WRITE_ID; - buffer[i++] = num_writes; - buffer[i++] = 0x0; - return i; -} - -static inline int ni_usb_bulk_register_write(u8 *buffer, struct ni_usb_register reg) -{ - int i = 0; - - buffer[i++] = reg.device; - buffer[i++] = reg.address; - buffer[i++] = reg.value; - return i; -} - -static inline int ni_usb_bulk_register_read_header(u8 *buffer, int num_reads) -{ - int i = 0; - - buffer[i++] = NIUSB_REG_READ_ID; - buffer[i++] = num_reads; - return i; -} - -static inline int ni_usb_bulk_register_read(u8 *buffer, int device, int address) -{ - int i = 0; - - buffer[i++] = device; - buffer[i++] = address; - return i; -} - -#endif // _NI_USB_GPIB_H diff --git a/drivers/staging/gpib/pc2/Makefile b/drivers/staging/gpib/pc2/Makefile deleted file mode 100644 index 481ee4296e1b..000000000000 --- a/drivers/staging/gpib/pc2/Makefile +++ /dev/null @@ -1,5 +0,0 @@ - -obj-$(CONFIG_GPIB_PC2) += pc2_gpib.o - - - diff --git a/drivers/staging/gpib/pc2/pc2_gpib.c b/drivers/staging/gpib/pc2/pc2_gpib.c deleted file mode 100644 index 9f3943d1df66..000000000000 --- a/drivers/staging/gpib/pc2/pc2_gpib.c +++ /dev/null @@ -1,684 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt - -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/bitops.h> -#include <asm/dma.h> -#include <linux/dma-mapping.h> -#include <linux/string.h> -#include <linux/init.h> -#include "nec7210.h" -#include "gpibP.h" - -// struct which defines private_data for pc2 driver -struct pc2_priv { - struct nec7210_priv nec7210_priv; - unsigned int irq; - // io address that clears interrupt for pc2a (0x2f0 + irq) - unsigned int clear_intr_addr; -}; - -// pc2 uses 8 consecutive io addresses -static const int pc2_iosize = 8; -static const int pc2a_iosize = 8; -static const int pc2_2a_iosize = 16; - -// offset between io addresses of successive nec7210 registers -static const int pc2a_reg_offset = 0x400; -static const int pc2_reg_offset = 1; - -// interrupt service routine -static irqreturn_t pc2_interrupt(int irq, void *arg); -static irqreturn_t pc2a_interrupt(int irq, void *arg); - -// pc2 specific registers and bits - -// interrupt clear register address -static const int pc2a_clear_intr_iobase = 0x2f0; -static inline unsigned int CLEAR_INTR_REG(unsigned int irq) -{ - return pc2a_clear_intr_iobase + irq; -} - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for PC2/PC2a and compatible devices"); - -/* - * GPIB interrupt service routines - */ - -irqreturn_t pc2_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct pc2_priv *priv = board->private_data; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = nec7210_interrupt(board, &priv->nec7210_priv); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -irqreturn_t pc2a_interrupt(int irq, void *arg) -{ - struct gpib_board *board = arg; - struct pc2_priv *priv = board->private_data; - int status1, status2; - unsigned long flags; - irqreturn_t retval; - - spin_lock_irqsave(&board->spinlock, flags); - // read interrupt status (also clears status) - status1 = read_byte(&priv->nec7210_priv, ISR1); - status2 = read_byte(&priv->nec7210_priv, ISR2); - /* clear interrupt circuit */ - if (priv->irq) - outb(0xff, CLEAR_INTR_REG(priv->irq)); - retval = nec7210_interrupt_have_status(board, &priv->nec7210_priv, status1, status2); - spin_unlock_irqrestore(&board->spinlock, flags); - return retval; -} - -// wrappers for interface functions -static int pc2_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); -} - -static int pc2_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int pc2_command(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int pc2_take_control(struct gpib_board *board, int synchronous) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int pc2_go_to_standby(struct gpib_board *board) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int pc2_request_system_control(struct gpib_board *board, int request_control) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_request_system_control(board, &priv->nec7210_priv, request_control); -} - -static void pc2_interface_clear(struct gpib_board *board, int assert) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void pc2_remote_enable(struct gpib_board *board, int enable) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int pc2_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void pc2_disable_eos(struct gpib_board *board) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int pc2_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_update_status(board, &priv->nec7210_priv, clear_mask); -} - -static int pc2_primary_address(struct gpib_board *board, unsigned int address) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int pc2_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int pc2_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_parallel_poll(board, &priv->nec7210_priv, result); -} - -static void pc2_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, config); -} - -static void pc2_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -static void pc2_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static u8 pc2_serial_poll_status(struct gpib_board *board) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static int pc2_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct pc2_priv *priv = board->private_data; - - return nec7210_t1_delay(board, &priv->nec7210_priv, nano_sec); -} - -static void pc2_return_to_local(struct gpib_board *board) -{ - struct pc2_priv *priv = board->private_data; - - nec7210_return_to_local(board, &priv->nec7210_priv); -} - -static int allocate_private(struct gpib_board *board) -{ - struct pc2_priv *priv; - - board->private_data = kmalloc(sizeof(struct pc2_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - priv = board->private_data; - memset(priv, 0, sizeof(struct pc2_priv)); - init_nec7210_private(&priv->nec7210_priv); - return 0; -} - -static void free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static int pc2_generic_attach(struct gpib_board *board, const struct gpib_board_config *config, - enum nec7210_chipset chipset) -{ - struct pc2_priv *pc2_priv; - struct nec7210_priv *nec_priv; - - board->status = 0; - if (allocate_private(board)) - return -ENOMEM; - pc2_priv = board->private_data; - nec_priv = &pc2_priv->nec7210_priv; - nec_priv->read_byte = nec7210_ioport_read_byte; - nec_priv->write_byte = nec7210_ioport_write_byte; - nec_priv->type = chipset; - -#ifndef PC2_DMA - /* - * board->dev hasn't been initialized, so forget about DMA until this driver - * is adapted to use isa_register_driver. - */ - if (config->ibdma) - // driver needs to be adapted to use isa_register_driver to get a struct device* - dev_err(board->gpib_dev, "DMA disabled for pc2 gpib"); -#else - if (config->ibdma) { - nec_priv->dma_buffer_length = 0x1000; - nec_priv->dma_buffer = dma_alloc_coherent(board->dev, - nec_priv->dma_buffer_length, & - nec_priv->dma_buffer_addr, GFP_ATOMIC); - if (!nec_priv->dma_buffer) - return -ENOMEM; - - // request isa dma channel - if (request_dma(config->ibdma, "pc2")) { - dev_err(board->gpib_dev, "can't request DMA %d\n", config->ibdma); - return -1; - } - nec_priv->dma_channel = config->ibdma; - } -#endif - - return 0; -} - -static int pc2_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - int isr_flags = 0; - struct pc2_priv *pc2_priv; - struct nec7210_priv *nec_priv; - int retval; - - retval = pc2_generic_attach(board, config, NEC7210); - if (retval) - return retval; - - pc2_priv = board->private_data; - nec_priv = &pc2_priv->nec7210_priv; - nec_priv->offset = pc2_reg_offset; - - if (!request_region(config->ibbase, pc2_iosize, "pc2")) { - dev_err(board->gpib_dev, "ioports are already in use\n"); - return -EBUSY; - } - nec_priv->iobase = config->ibbase; - - nec7210_board_reset(nec_priv, board); - - // install interrupt handler - if (config->ibirq) { - if (request_irq(config->ibirq, pc2_interrupt, isr_flags, "pc2", board)) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", config->ibirq); - return -EBUSY; - } - } - pc2_priv->irq = config->ibirq; - /* poll so we can detect assertion of ATN */ - if (gpib_request_pseudo_irq(board, pc2_interrupt)) { - dev_err(board->gpib_dev, "failed to allocate pseudo_irq\n"); - return -1; - } - /* set internal counter register for 8 MHz input clock */ - write_byte(nec_priv, ICR | 8, AUXMR); - - nec7210_board_online(nec_priv, board); - - return 0; -} - -static void pc2_detach(struct gpib_board *board) -{ - struct pc2_priv *pc2_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (pc2_priv) { - nec_priv = &pc2_priv->nec7210_priv; -#ifdef PC2_DMA - if (nec_priv->dma_channel) - free_dma(nec_priv->dma_channel); -#endif - gpib_free_pseudo_irq(board); - if (pc2_priv->irq) - free_irq(pc2_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - release_region(nec_priv->iobase, pc2_iosize); - } - if (nec_priv->dma_buffer) { - dma_free_coherent(board->dev, nec_priv->dma_buffer_length, - nec_priv->dma_buffer, nec_priv->dma_buffer_addr); - nec_priv->dma_buffer = NULL; - } - } - free_private(board); -} - -static int pc2a_common_attach(struct gpib_board *board, const struct gpib_board_config *config, - unsigned int num_registers, enum nec7210_chipset chipset) -{ - unsigned int i, j; - struct pc2_priv *pc2_priv; - struct nec7210_priv *nec_priv; - int retval; - - retval = pc2_generic_attach(board, config, chipset); - if (retval) - return retval; - - pc2_priv = board->private_data; - nec_priv = &pc2_priv->nec7210_priv; - nec_priv->offset = pc2a_reg_offset; - - switch (config->ibbase) { - case 0x02e1: - case 0x22e1: - case 0x42e1: - case 0x62e1: - break; - default: - dev_err(board->gpib_dev, "PCIIa base range invalid, must be one of 0x[0246]2e1, but is 0x%x\n", - config->ibbase); - return -1; - } - - if (config->ibirq) { - if (config->ibirq < 2 || config->ibirq > 7) { - dev_err(board->gpib_dev, "illegal interrupt level %i\n", - config->ibirq); - return -1; - } - } else { - dev_err(board->gpib_dev, "interrupt disabled, using polling mode (slow)\n"); - } -#ifdef CHECK_IOPORTS - unsigned int err = 0; - - for (i = 0; i < num_registers; i++) { - if (check_region(config->ibbase + i * pc2a_reg_offset, 1)) - err++; - } - if (config->ibirq && check_region(pc2a_clear_intr_iobase + config->ibirq, 1)) - err++; - if (err) { - dev_err(board->gpib_dev, "ioports are already in use"); - return -EBUSY; - } -#endif - for (i = 0; i < num_registers; i++) { - if (!request_region(config->ibbase + - i * pc2a_reg_offset, 1, "pc2a")) { - dev_err(board->gpib_dev, "ioports are already in use"); - for (j = 0; j < i; j++) - release_region(config->ibbase + - j * pc2a_reg_offset, 1); - return -EBUSY; - } - } - nec_priv->iobase = config->ibbase; - if (config->ibirq) { - if (!request_region(pc2a_clear_intr_iobase + config->ibirq, 1, "pc2a")) { - dev_err(board->gpib_dev, "ioports are already in use"); - return -1; - } - pc2_priv->clear_intr_addr = pc2a_clear_intr_iobase + config->ibirq; - if (request_irq(config->ibirq, pc2a_interrupt, 0, "pc2a", board)) { - dev_err(board->gpib_dev, "can't request IRQ %d\n", config->ibirq); - return -EBUSY; - } - } - pc2_priv->irq = config->ibirq; - /* poll so we can detect assertion of ATN */ - if (gpib_request_pseudo_irq(board, pc2_interrupt)) { - dev_err(board->gpib_dev, "failed to allocate pseudo_irq\n"); - return -1; - } - - // make sure interrupt is clear - if (pc2_priv->irq) - outb(0xff, CLEAR_INTR_REG(pc2_priv->irq)); - - nec7210_board_reset(nec_priv, board); - - /* set internal counter register for 8 MHz input clock */ - write_byte(nec_priv, ICR | 8, AUXMR); - - nec7210_board_online(nec_priv, board); - - return 0; -} - -static int pc2a_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return pc2a_common_attach(board, config, pc2a_iosize, NEC7210); -} - -static int pc2a_cb7210_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return pc2a_common_attach(board, config, pc2a_iosize, CB7210); -} - -static int pc2_2a_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return pc2a_common_attach(board, config, pc2_2a_iosize, NAT4882); -} - -static void pc2a_common_detach(struct gpib_board *board, unsigned int num_registers) -{ - int i; - struct pc2_priv *pc2_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (pc2_priv) { - nec_priv = &pc2_priv->nec7210_priv; -#ifdef PC2_DMA - if (nec_priv->dma_channel) - free_dma(nec_priv->dma_channel); -#endif - gpib_free_pseudo_irq(board); - if (pc2_priv->irq) - free_irq(pc2_priv->irq, board); - if (nec_priv->iobase) { - nec7210_board_reset(nec_priv, board); - for (i = 0; i < num_registers; i++) - release_region(nec_priv->iobase + - i * pc2a_reg_offset, 1); - } - if (pc2_priv->clear_intr_addr) - release_region(pc2_priv->clear_intr_addr, 1); - if (nec_priv->dma_buffer) { - dma_free_coherent(board->dev, nec_priv->dma_buffer_length, - nec_priv->dma_buffer, - nec_priv->dma_buffer_addr); - nec_priv->dma_buffer = NULL; - } - } - free_private(board); -} - -static void pc2a_detach(struct gpib_board *board) -{ - pc2a_common_detach(board, pc2a_iosize); -} - -static void pc2_2a_detach(struct gpib_board *board) -{ - pc2a_common_detach(board, pc2_2a_iosize); -} - -static struct gpib_interface pc2_interface = { - .name = "pcII", - .attach = pc2_attach, - .detach = pc2_detach, - .read = pc2_read, - .write = pc2_write, - .command = pc2_command, - .take_control = pc2_take_control, - .go_to_standby = pc2_go_to_standby, - .request_system_control = pc2_request_system_control, - .interface_clear = pc2_interface_clear, - .remote_enable = pc2_remote_enable, - .enable_eos = pc2_enable_eos, - .disable_eos = pc2_disable_eos, - .parallel_poll = pc2_parallel_poll, - .parallel_poll_configure = pc2_parallel_poll_configure, - .parallel_poll_response = pc2_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, - .update_status = pc2_update_status, - .primary_address = pc2_primary_address, - .secondary_address = pc2_secondary_address, - .serial_poll_response = pc2_serial_poll_response, - .serial_poll_status = pc2_serial_poll_status, - .t1_delay = pc2_t1_delay, - .return_to_local = pc2_return_to_local, -}; - -static struct gpib_interface pc2a_interface = { - .name = "pcIIa", - .attach = pc2a_attach, - .detach = pc2a_detach, - .read = pc2_read, - .write = pc2_write, - .command = pc2_command, - .take_control = pc2_take_control, - .go_to_standby = pc2_go_to_standby, - .request_system_control = pc2_request_system_control, - .interface_clear = pc2_interface_clear, - .remote_enable = pc2_remote_enable, - .enable_eos = pc2_enable_eos, - .disable_eos = pc2_disable_eos, - .parallel_poll = pc2_parallel_poll, - .parallel_poll_configure = pc2_parallel_poll_configure, - .parallel_poll_response = pc2_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, - .update_status = pc2_update_status, - .primary_address = pc2_primary_address, - .secondary_address = pc2_secondary_address, - .serial_poll_response = pc2_serial_poll_response, - .serial_poll_status = pc2_serial_poll_status, - .t1_delay = pc2_t1_delay, - .return_to_local = pc2_return_to_local, -}; - -static struct gpib_interface pc2a_cb7210_interface = { - .name = "pcIIa_cb7210", - .attach = pc2a_cb7210_attach, - .detach = pc2a_detach, - .read = pc2_read, - .write = pc2_write, - .command = pc2_command, - .take_control = pc2_take_control, - .go_to_standby = pc2_go_to_standby, - .request_system_control = pc2_request_system_control, - .interface_clear = pc2_interface_clear, - .remote_enable = pc2_remote_enable, - .enable_eos = pc2_enable_eos, - .disable_eos = pc2_disable_eos, - .parallel_poll = pc2_parallel_poll, - .parallel_poll_configure = pc2_parallel_poll_configure, - .parallel_poll_response = pc2_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, // XXX - .update_status = pc2_update_status, - .primary_address = pc2_primary_address, - .secondary_address = pc2_secondary_address, - .serial_poll_response = pc2_serial_poll_response, - .serial_poll_status = pc2_serial_poll_status, - .t1_delay = pc2_t1_delay, - .return_to_local = pc2_return_to_local, -}; - -static struct gpib_interface pc2_2a_interface = { - .name = "pcII_IIa", - .attach = pc2_2a_attach, - .detach = pc2_2a_detach, - .read = pc2_read, - .write = pc2_write, - .command = pc2_command, - .take_control = pc2_take_control, - .go_to_standby = pc2_go_to_standby, - .request_system_control = pc2_request_system_control, - .interface_clear = pc2_interface_clear, - .remote_enable = pc2_remote_enable, - .enable_eos = pc2_enable_eos, - .disable_eos = pc2_disable_eos, - .parallel_poll = pc2_parallel_poll, - .parallel_poll_configure = pc2_parallel_poll_configure, - .parallel_poll_response = pc2_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, - .update_status = pc2_update_status, - .primary_address = pc2_primary_address, - .secondary_address = pc2_secondary_address, - .serial_poll_response = pc2_serial_poll_response, - .serial_poll_status = pc2_serial_poll_status, - .t1_delay = pc2_t1_delay, - .return_to_local = pc2_return_to_local, -}; - -static int __init pc2_init_module(void) -{ - int ret; - - ret = gpib_register_driver(&pc2_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - return ret; - } - - ret = gpib_register_driver(&pc2a_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pc2a; - } - - ret = gpib_register_driver(&pc2a_cb7210_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_cb7210; - } - - ret = gpib_register_driver(&pc2_2a_interface, THIS_MODULE); - if (ret) { - pr_err("gpib_register_driver failed: error = %d\n", ret); - goto err_pc2_2a; - } - - return 0; - -err_pc2_2a: - gpib_unregister_driver(&pc2a_cb7210_interface); -err_cb7210: - gpib_unregister_driver(&pc2a_interface); -err_pc2a: - gpib_unregister_driver(&pc2_interface); - - return ret; -} - -static void __exit pc2_exit_module(void) -{ - gpib_unregister_driver(&pc2_interface); - gpib_unregister_driver(&pc2a_interface); - gpib_unregister_driver(&pc2a_cb7210_interface); - gpib_unregister_driver(&pc2_2a_interface); -} - -module_init(pc2_init_module); -module_exit(pc2_exit_module); - diff --git a/drivers/staging/gpib/tms9914/Makefile b/drivers/staging/gpib/tms9914/Makefile deleted file mode 100644 index 4705ab07f413..000000000000 --- a/drivers/staging/gpib/tms9914/Makefile +++ /dev/null @@ -1,6 +0,0 @@ - -obj-$(CONFIG_GPIB_TMS9914) += tms9914.o - - - - diff --git a/drivers/staging/gpib/tms9914/tms9914.c b/drivers/staging/gpib/tms9914/tms9914.c deleted file mode 100644 index 72a11596a35e..000000000000 --- a/drivers/staging/gpib/tms9914/tms9914.c +++ /dev/null @@ -1,914 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt - -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <asm/dma.h> -#include <linux/io.h> -#include <linux/bitops.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/delay.h> - -#include "gpibP.h" -#include "tms9914.h" - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB library for tms9914"); - -static unsigned int update_status_nolock(struct gpib_board *board, struct tms9914_priv *priv); - -int tms9914_take_control(struct gpib_board *board, struct tms9914_priv *priv, int synchronous) -{ - int i; - const int timeout = 100; - - if (synchronous) - write_byte(priv, AUX_TCS, AUXCR); - else - write_byte(priv, AUX_TCA, AUXCR); - // busy wait until ATN is asserted - for (i = 0; i < timeout; i++) { - if ((read_byte(priv, ADSR) & HR_ATN)) - break; - udelay(1); - } - if (i == timeout) - return -ETIMEDOUT; - - clear_bit(WRITE_READY_BN, &priv->state); - - return 0; -} -EXPORT_SYMBOL_GPL(tms9914_take_control); - -/* - * The agilent 82350B has a buggy implementation of tcs which interferes with the - * operation of tca. It appears to be based on the controller state machine - * described in the TI 9900 TMS9914A data manual published in 1982. This - * manual describes tcs as putting the controller into a CWAS - * state where it waits indefinitely for ANRS and ignores tca. Since a - * functioning tca is far more important than tcs, we work around the - * problem by never issuing tcs. - * - * I don't know if this problem exists in the real tms9914a or just in the fpga - * of the 82350B. For now, only the agilent_82350b uses this workaround. - * The rest of the tms9914 based drivers still use tms9914_take_control - * directly (which does issue tcs). - */ -int tms9914_take_control_workaround(struct gpib_board *board, - struct tms9914_priv *priv, int synchronous) -{ - if (synchronous) - return -ETIMEDOUT; - return tms9914_take_control(board, priv, synchronous); -} -EXPORT_SYMBOL_GPL(tms9914_take_control_workaround); - -int tms9914_go_to_standby(struct gpib_board *board, struct tms9914_priv *priv) -{ - int i; - const int timeout = 1000; - - write_byte(priv, AUX_GTS, AUXCR); - // busy wait until ATN is released - for (i = 0; i < timeout; i++) { - if ((read_byte(priv, ADSR) & HR_ATN) == 0) - break; - udelay(1); - } - if (i == timeout) - return -ETIMEDOUT; - - clear_bit(COMMAND_READY_BN, &priv->state); - - return 0; -} -EXPORT_SYMBOL_GPL(tms9914_go_to_standby); - -void tms9914_interface_clear(struct gpib_board *board, struct tms9914_priv *priv, int assert) -{ - if (assert) { - write_byte(priv, AUX_SIC | AUX_CS, AUXCR); - - set_bit(CIC_NUM, &board->status); - } else { - write_byte(priv, AUX_SIC, AUXCR); - } -} -EXPORT_SYMBOL_GPL(tms9914_interface_clear); - -void tms9914_remote_enable(struct gpib_board *board, struct tms9914_priv *priv, int enable) -{ - if (enable) - write_byte(priv, AUX_SRE | AUX_CS, AUXCR); - else - write_byte(priv, AUX_SRE, AUXCR); -} -EXPORT_SYMBOL_GPL(tms9914_remote_enable); - -int tms9914_request_system_control(struct gpib_board *board, struct tms9914_priv *priv, - int request_control) -{ - if (request_control) { - write_byte(priv, AUX_RQC, AUXCR); - } else { - clear_bit(CIC_NUM, &board->status); - write_byte(priv, AUX_RLC, AUXCR); - } - return 0; -} -EXPORT_SYMBOL_GPL(tms9914_request_system_control); - -unsigned int tms9914_t1_delay(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int nano_sec) -{ - static const int clock_period = 200; // assuming 5Mhz input clock - int num_cycles; - - num_cycles = 12; - - if (nano_sec <= 8 * clock_period) { - write_byte(priv, AUX_STDL | AUX_CS, AUXCR); - num_cycles = 8; - } else { - write_byte(priv, AUX_STDL, AUXCR); - } - - if (nano_sec <= 4 * clock_period) { - write_byte(priv, AUX_VSTDL | AUX_CS, AUXCR); - num_cycles = 4; - } else { - write_byte(priv, AUX_VSTDL, AUXCR); - } - - return num_cycles * clock_period; -} -EXPORT_SYMBOL_GPL(tms9914_t1_delay); - -void tms9914_return_to_local(const struct gpib_board *board, struct tms9914_priv *priv) -{ - write_byte(priv, AUX_RTL, AUXCR); -} -EXPORT_SYMBOL_GPL(tms9914_return_to_local); - -void tms9914_set_holdoff_mode(struct tms9914_priv *priv, enum tms9914_holdoff_mode mode) -{ - switch (mode) { - case TMS9914_HOLDOFF_NONE: - write_byte(priv, AUX_HLDE, AUXCR); - write_byte(priv, AUX_HLDA, AUXCR); - break; - case TMS9914_HOLDOFF_EOI: - write_byte(priv, AUX_HLDE | AUX_CS, AUXCR); - write_byte(priv, AUX_HLDA, AUXCR); - break; - case TMS9914_HOLDOFF_ALL: - write_byte(priv, AUX_HLDE, AUXCR); - write_byte(priv, AUX_HLDA | AUX_CS, AUXCR); - break; - default: - pr_err("bug! bad holdoff mode %i\n", mode); - break; - } - priv->holdoff_mode = mode; -} -EXPORT_SYMBOL_GPL(tms9914_set_holdoff_mode); - -void tms9914_release_holdoff(struct tms9914_priv *priv) -{ - if (priv->holdoff_active) { - write_byte(priv, AUX_RHDF, AUXCR); - priv->holdoff_active = 0; - } -} -EXPORT_SYMBOL_GPL(tms9914_release_holdoff); - -int tms9914_enable_eos(struct gpib_board *board, struct tms9914_priv *priv, u8 eos_byte, - int compare_8_bits) -{ - priv->eos = eos_byte; - priv->eos_flags = REOS; - if (compare_8_bits) - priv->eos_flags |= BIN; - return 0; -} -EXPORT_SYMBOL(tms9914_enable_eos); - -void tms9914_disable_eos(struct gpib_board *board, struct tms9914_priv *priv) -{ - priv->eos_flags &= ~REOS; -} -EXPORT_SYMBOL(tms9914_disable_eos); - -int tms9914_parallel_poll(struct gpib_board *board, struct tms9914_priv *priv, u8 *result) -{ - // execute parallel poll - write_byte(priv, AUX_CS | AUX_RPP, AUXCR); - udelay(2); - *result = read_byte(priv, CPTR); - // clear parallel poll state - write_byte(priv, AUX_RPP, AUXCR); - return 0; -} -EXPORT_SYMBOL(tms9914_parallel_poll); - -static void set_ppoll_reg(struct tms9914_priv *priv, int enable, - unsigned int dio_line, int sense, int ist) -{ - u8 dio_byte; - - if (enable && ((sense && ist) || (!sense && !ist))) { - dio_byte = 1 << (dio_line - 1); - write_byte(priv, dio_byte, PPR); - } else { - write_byte(priv, 0, PPR); - } -} - -void tms9914_parallel_poll_configure(struct gpib_board *board, - struct tms9914_priv *priv, u8 config) -{ - priv->ppoll_enable = (config & PPC_DISABLE) == 0; - priv->ppoll_line = (config & PPC_DIO_MASK) + 1; - priv->ppoll_sense = (config & PPC_SENSE) != 0; - set_ppoll_reg(priv, priv->ppoll_enable, priv->ppoll_line, priv->ppoll_sense, board->ist); -} -EXPORT_SYMBOL(tms9914_parallel_poll_configure); - -void tms9914_parallel_poll_response(struct gpib_board *board, - struct tms9914_priv *priv, int ist) -{ - set_ppoll_reg(priv, priv->ppoll_enable, priv->ppoll_line, priv->ppoll_sense, ist); -} -EXPORT_SYMBOL(tms9914_parallel_poll_response); - -void tms9914_serial_poll_response(struct gpib_board *board, - struct tms9914_priv *priv, u8 status) -{ - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - write_byte(priv, status, SPMR); - priv->spoll_status = status; - if (status & request_service_bit) - write_byte(priv, AUX_RSV2 | AUX_CS, AUXCR); - else - write_byte(priv, AUX_RSV2, AUXCR); - spin_unlock_irqrestore(&board->spinlock, flags); -} -EXPORT_SYMBOL(tms9914_serial_poll_response); - -u8 tms9914_serial_poll_status(struct gpib_board *board, struct tms9914_priv *priv) -{ - u8 status; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - status = priv->spoll_status; - spin_unlock_irqrestore(&board->spinlock, flags); - - return status; -} -EXPORT_SYMBOL(tms9914_serial_poll_status); - -int tms9914_primary_address(struct gpib_board *board, - struct tms9914_priv *priv, unsigned int address) -{ - // put primary address in address0 - write_byte(priv, address & ADDRESS_MASK, ADR); - return 0; -} -EXPORT_SYMBOL(tms9914_primary_address); - -int tms9914_secondary_address(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int address, int enable) -{ - if (enable) - priv->imr1_bits |= HR_APTIE; - else - priv->imr1_bits &= ~HR_APTIE; - - write_byte(priv, priv->imr1_bits, IMR1); - return 0; -} -EXPORT_SYMBOL(tms9914_secondary_address); - -unsigned int tms9914_update_status(struct gpib_board *board, struct tms9914_priv *priv, - unsigned int clear_mask) -{ - unsigned long flags; - unsigned int retval; - - spin_lock_irqsave(&board->spinlock, flags); - retval = update_status_nolock(board, priv); - board->status &= ~clear_mask; - spin_unlock_irqrestore(&board->spinlock, flags); - - return retval; -} -EXPORT_SYMBOL(tms9914_update_status); - -static void update_talker_state(struct tms9914_priv *priv, unsigned int address_status_bits) -{ - if (address_status_bits & HR_TA) { - if (address_status_bits & HR_ATN) - priv->talker_state = talker_addressed; - else - /* - * this could also be serial_poll_active, but the tms9914 provides no - * way to distinguish, so we'll assume talker_active - */ - priv->talker_state = talker_active; - } else { - priv->talker_state = talker_idle; - } -} - -static void update_listener_state(struct tms9914_priv *priv, unsigned int address_status_bits) -{ - if (address_status_bits & HR_LA) { - if (address_status_bits & HR_ATN) - priv->listener_state = listener_addressed; - else - priv->listener_state = listener_active; - } else { - priv->listener_state = listener_idle; - } -} - -static unsigned int update_status_nolock(struct gpib_board *board, struct tms9914_priv *priv) -{ - int address_status; - int bsr_bits; - - address_status = read_byte(priv, ADSR); - - // check for remote/local - if (address_status & HR_REM) - set_bit(REM_NUM, &board->status); - else - clear_bit(REM_NUM, &board->status); - // check for lockout - if (address_status & HR_LLO) - set_bit(LOK_NUM, &board->status); - else - clear_bit(LOK_NUM, &board->status); - // check for ATN - if (address_status & HR_ATN) - set_bit(ATN_NUM, &board->status); - else - clear_bit(ATN_NUM, &board->status); - // check for talker/listener addressed - update_talker_state(priv, address_status); - if (priv->talker_state == talker_active || priv->talker_state == talker_addressed) - set_bit(TACS_NUM, &board->status); - else - clear_bit(TACS_NUM, &board->status); - - update_listener_state(priv, address_status); - if (priv->listener_state == listener_active || priv->listener_state == listener_addressed) - set_bit(LACS_NUM, &board->status); - else - clear_bit(LACS_NUM, &board->status); - // Check for SRQI - not reset elsewhere except in autospoll - if (board->status & SRQI) { - bsr_bits = read_byte(priv, BSR); - if (!(bsr_bits & BSR_SRQ_BIT)) - clear_bit(SRQI_NUM, &board->status); - } - - dev_dbg(board->gpib_dev, "status 0x%lx, state 0x%lx\n", board->status, priv->state); - - return board->status; -} - -int tms9914_line_status(const struct gpib_board *board, struct tms9914_priv *priv) -{ - int bsr_bits; - int status = VALID_ALL; - - bsr_bits = read_byte(priv, BSR); - - if (bsr_bits & BSR_REN_BIT) - status |= BUS_REN; - if (bsr_bits & BSR_IFC_BIT) - status |= BUS_IFC; - if (bsr_bits & BSR_SRQ_BIT) - status |= BUS_SRQ; - if (bsr_bits & BSR_EOI_BIT) - status |= BUS_EOI; - if (bsr_bits & BSR_NRFD_BIT) - status |= BUS_NRFD; - if (bsr_bits & BSR_NDAC_BIT) - status |= BUS_NDAC; - if (bsr_bits & BSR_DAV_BIT) - status |= BUS_DAV; - if (bsr_bits & BSR_ATN_BIT) - status |= BUS_ATN; - - return status; -} -EXPORT_SYMBOL(tms9914_line_status); - -static int check_for_eos(struct tms9914_priv *priv, u8 byte) -{ - static const u8 seven_bit_compare_mask = 0x7f; - - if ((priv->eos_flags & REOS) == 0) - return 0; - - if (priv->eos_flags & BIN) { - if (priv->eos == byte) - return 1; - } else { - if ((priv->eos & seven_bit_compare_mask) == (byte & seven_bit_compare_mask)) - return 1; - } - return 0; -} - -static int wait_for_read_byte(struct gpib_board *board, struct tms9914_priv *priv) -{ - if (wait_event_interruptible(board->wait, - test_bit(READ_READY_BN, &priv->state) || - test_bit(DEV_CLEAR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - - if (test_bit(DEV_CLEAR_BN, &priv->state)) - return -EINTR; - return 0; -} - -static inline u8 tms9914_read_data_in(struct gpib_board *board, - struct tms9914_priv *priv, int *end) -{ - unsigned long flags; - u8 data; - - spin_lock_irqsave(&board->spinlock, flags); - clear_bit(READ_READY_BN, &priv->state); - data = read_byte(priv, DIR); - if (test_and_clear_bit(RECEIVED_END_BN, &priv->state)) - *end = 1; - else - *end = 0; - switch (priv->holdoff_mode) { - case TMS9914_HOLDOFF_EOI: - if (*end) - priv->holdoff_active = 1; - break; - case TMS9914_HOLDOFF_ALL: - priv->holdoff_active = 1; - break; - case TMS9914_HOLDOFF_NONE: - break; - default: - dev_err(board->gpib_dev, "bug! bad holdoff mode %i\n", priv->holdoff_mode); - break; - } - spin_unlock_irqrestore(&board->spinlock, flags); - - return data; -} - -static int pio_read(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - - *bytes_read = 0; - *end = 0; - while (*bytes_read < length && *end == 0) { - tms9914_release_holdoff(priv); - retval = wait_for_read_byte(board, priv); - if (retval < 0) - return retval; - buffer[(*bytes_read)++] = tms9914_read_data_in(board, priv, end); - - if (check_for_eos(priv, buffer[*bytes_read - 1])) - *end = 1; - } - - return retval; -} - -int tms9914_read(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, int *end, size_t *bytes_read) -{ - ssize_t retval = 0; - size_t num_bytes; - - *end = 0; - *bytes_read = 0; - if (length == 0) - return 0; - - clear_bit(DEV_CLEAR_BN, &priv->state); - - // transfer data (except for last byte) - if (length > 1) { - if (priv->eos_flags & REOS) - tms9914_set_holdoff_mode(priv, TMS9914_HOLDOFF_ALL); - else - tms9914_set_holdoff_mode(priv, TMS9914_HOLDOFF_EOI); - // PIO transfer - retval = pio_read(board, priv, buffer, length - 1, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - buffer += num_bytes; - length -= num_bytes; - } - // read last bytes if we haven't received an END yet - if (*end == 0) { - // make sure we holdoff after last byte read - tms9914_set_holdoff_mode(priv, TMS9914_HOLDOFF_ALL); - retval = pio_read(board, priv, buffer, length, end, &num_bytes); - *bytes_read += num_bytes; - if (retval < 0) - return retval; - } - return 0; -} -EXPORT_SYMBOL(tms9914_read); - -static int pio_write_wait(struct gpib_board *board, struct tms9914_priv *priv) -{ - // wait until next byte is ready to be sent - if (wait_event_interruptible(board->wait, - test_bit(WRITE_READY_BN, &priv->state) || - test_bit(BUS_ERROR_BN, &priv->state) || - test_bit(DEV_CLEAR_BN, &priv->state) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (test_bit(BUS_ERROR_BN, &priv->state)) - return -EIO; - if (test_bit(DEV_CLEAR_BN, &priv->state)) - return -EINTR; - - return 0; -} - -static int pio_write(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, size_t *bytes_written) -{ - ssize_t retval = 0; - unsigned long flags; - - *bytes_written = 0; - while (*bytes_written < length) { - retval = pio_write_wait(board, priv); - if (retval < 0) - break; - - spin_lock_irqsave(&board->spinlock, flags); - clear_bit(WRITE_READY_BN, &priv->state); - write_byte(priv, buffer[(*bytes_written)++], CDOR); - spin_unlock_irqrestore(&board->spinlock, flags); - } - retval = pio_write_wait(board, priv); - if (retval < 0) - return retval; - - return length; -} - -int tms9914_write(struct gpib_board *board, struct tms9914_priv *priv, - u8 *buffer, size_t length, int send_eoi, size_t *bytes_written) -{ - ssize_t retval = 0; - - *bytes_written = 0; - if (length == 0) - return 0; - - clear_bit(BUS_ERROR_BN, &priv->state); - clear_bit(DEV_CLEAR_BN, &priv->state); - - if (send_eoi) - length-- ; /* save the last byte for sending EOI */ - - if (length > 0) { - size_t num_bytes; - // PIO transfer - retval = pio_write(board, priv, buffer, length, &num_bytes); - *bytes_written += num_bytes; - if (retval < 0) - return retval; - } - if (send_eoi) { - size_t num_bytes; - /*send EOI */ - write_byte(priv, AUX_SEOI, AUXCR); - - retval = pio_write(board, priv, &buffer[*bytes_written], 1, &num_bytes); - *bytes_written += num_bytes; - } - return retval; -} -EXPORT_SYMBOL(tms9914_write); - -static void check_my_address_state(struct gpib_board *board, - struct tms9914_priv *priv, int cmd_byte) -{ - if (cmd_byte == MLA(board->pad)) { - priv->primary_listen_addressed = 1; - // become active listener - if (board->sad < 0) - write_byte(priv, AUX_LON | AUX_CS, AUXCR); - } else if (board->sad >= 0 && priv->primary_listen_addressed && - cmd_byte == MSA(board->sad)) { - // become active listener - write_byte(priv, AUX_LON | AUX_CS, AUXCR); - } else if (cmd_byte != MLA(board->pad) && (cmd_byte & 0xe0) == LAD) { - priv->primary_listen_addressed = 0; - } else if (cmd_byte == UNL) { - priv->primary_listen_addressed = 0; - write_byte(priv, AUX_LON, AUXCR); - } else if (cmd_byte == MTA(board->pad)) { - priv->primary_talk_addressed = 1; - if (board->sad < 0) - // make active talker - write_byte(priv, AUX_TON | AUX_CS, AUXCR); - } else if (board->sad >= 0 && priv->primary_talk_addressed && - cmd_byte == MSA(board->sad)) { - // become active talker - write_byte(priv, AUX_TON | AUX_CS, AUXCR); - } else if (cmd_byte != MTA(board->pad) && (cmd_byte & 0xe0) == TAD) { - // Other Talk Address - priv->primary_talk_addressed = 0; - write_byte(priv, AUX_TON, AUXCR); - } else if (cmd_byte == UNT) { - priv->primary_talk_addressed = 0; - write_byte(priv, AUX_TON, AUXCR); - } -} - -int tms9914_command(struct gpib_board *board, struct tms9914_priv *priv, u8 *buffer, - size_t length, size_t *bytes_written) -{ - int retval = 0; - unsigned long flags; - - *bytes_written = 0; - while (*bytes_written < length) { - if (wait_event_interruptible(board->wait, - test_bit(COMMAND_READY_BN, - &priv->state) || - test_bit(TIMO_NUM, &board->status))) - break; - if (test_bit(TIMO_NUM, &board->status)) - break; - - spin_lock_irqsave(&board->spinlock, flags); - clear_bit(COMMAND_READY_BN, &priv->state); - write_byte(priv, buffer[*bytes_written], CDOR); - spin_unlock_irqrestore(&board->spinlock, flags); - - check_my_address_state(board, priv, buffer[*bytes_written]); - - ++(*bytes_written); - } - // wait until last command byte is written - if (wait_event_interruptible(board->wait, - test_bit(COMMAND_READY_BN, - &priv->state) || test_bit(TIMO_NUM, &board->status))) - retval = -ERESTARTSYS; - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - - return retval; -} -EXPORT_SYMBOL(tms9914_command); - -irqreturn_t tms9914_interrupt(struct gpib_board *board, struct tms9914_priv *priv) -{ - int status0, status1; - - // read interrupt status (also clears status) - status0 = read_byte(priv, ISR0); - status1 = read_byte(priv, ISR1); - return tms9914_interrupt_have_status(board, priv, status0, status1); -} -EXPORT_SYMBOL(tms9914_interrupt); - -irqreturn_t tms9914_interrupt_have_status(struct gpib_board *board, struct tms9914_priv *priv, - int status0, int status1) -{ - // record reception of END - if (status0 & HR_END) - set_bit(RECEIVED_END_BN, &priv->state); - // get incoming data in PIO mode - if ((status0 & HR_BI)) - set_bit(READ_READY_BN, &priv->state); - if ((status0 & HR_BO)) { - if (read_byte(priv, ADSR) & HR_ATN) - set_bit(COMMAND_READY_BN, &priv->state); - else - set_bit(WRITE_READY_BN, &priv->state); - } - - if (status0 & HR_SPAS) { - priv->spoll_status &= ~request_service_bit; - write_byte(priv, priv->spoll_status, SPMR); - // FIXME: set SPOLL status bit - } - // record service request in status - if (status1 & HR_SRQ) - set_bit(SRQI_NUM, &board->status); - // have been addressed (with secondary addressing disabled) - if (status1 & HR_MA) - // clear dac holdoff - write_byte(priv, AUX_VAL, AUXCR); - // unrecognized command received - if (status1 & HR_UNC) { - unsigned short command_byte = read_byte(priv, CPTR) & gpib_command_mask; - - switch (command_byte) { - case PP_CONFIG: - priv->ppoll_configure_state = 1; - /* - * AUX_PTS generates another UNC interrupt on the next command byte - * if it is in the secondary address group (such as PPE and PPD). - */ - write_byte(priv, AUX_PTS, AUXCR); - write_byte(priv, AUX_VAL, AUXCR); - break; - case PPU: - tms9914_parallel_poll_configure(board, priv, command_byte); - write_byte(priv, AUX_VAL, AUXCR); - break; - default: - if (is_PPE(command_byte) || is_PPD(command_byte)) { - if (priv->ppoll_configure_state) { - tms9914_parallel_poll_configure(board, priv, command_byte); - write_byte(priv, AUX_VAL, AUXCR); - } else {// bad parallel poll configure byte - // clear dac holdoff - write_byte(priv, AUX_INVAL, AUXCR); - } - } else { - // clear dac holdoff - write_byte(priv, AUX_INVAL, AUXCR); - } - break; - } - - if (in_primary_command_group(command_byte) && command_byte != PP_CONFIG) - priv->ppoll_configure_state = 0; - } - - if (status1 & HR_ERR) { - dev_dbg(board->gpib_dev, "gpib bus error\n"); - set_bit(BUS_ERROR_BN, &priv->state); - } - - if (status1 & HR_IFC) { - push_gpib_event(board, EVENT_IFC); - clear_bit(CIC_NUM, &board->status); - } - - if (status1 & HR_GET) { - push_gpib_event(board, EVENT_DEV_TRG); - // clear dac holdoff - write_byte(priv, AUX_VAL, AUXCR); - } - - if (status1 & HR_DCAS) { - push_gpib_event(board, EVENT_DEV_CLR); - // clear dac holdoff - write_byte(priv, AUX_VAL, AUXCR); - set_bit(DEV_CLEAR_BN, &priv->state); - } - - // check for being addressed with secondary addressing - if (status1 & HR_APT) { - if (board->sad < 0) - dev_err(board->gpib_dev, "bug, APT interrupt without secondary addressing?\n"); - if ((read_byte(priv, CPTR) & gpib_command_mask) == MSA(board->sad)) - write_byte(priv, AUX_VAL, AUXCR); - else - write_byte(priv, AUX_INVAL, AUXCR); - } - - if ((status0 & priv->imr0_bits) || (status1 & priv->imr1_bits)) { - dev_dbg(board->gpib_dev, "isr0 0x%x, imr0 0x%x, isr1 0x%x, imr1 0x%x\n", - status0, priv->imr0_bits, status1, priv->imr1_bits); - update_status_nolock(board, priv); - wake_up_interruptible(&board->wait); - } - return IRQ_HANDLED; -} -EXPORT_SYMBOL(tms9914_interrupt_have_status); - -void tms9914_board_reset(struct tms9914_priv *priv) -{ - /* chip reset */ - write_byte(priv, AUX_CHIP_RESET | AUX_CS, AUXCR); - - /* disable all interrupts */ - priv->imr0_bits = 0; - write_byte(priv, priv->imr0_bits, IMR0); - priv->imr1_bits = 0; - write_byte(priv, priv->imr1_bits, IMR1); - write_byte(priv, AUX_DAI | AUX_CS, AUXCR); - - /* clear registers by reading */ - read_byte(priv, CPTR); - read_byte(priv, ISR0); - read_byte(priv, ISR1); - - write_byte(priv, 0, SPMR); - - /* parallel poll unconfigure */ - write_byte(priv, 0, PPR); - /* request for data holdoff */ - tms9914_set_holdoff_mode(priv, TMS9914_HOLDOFF_ALL); -} -EXPORT_SYMBOL_GPL(tms9914_board_reset); - -void tms9914_online(struct gpib_board *board, struct tms9914_priv *priv) -{ - /* set GPIB address */ - tms9914_primary_address(board, priv, board->pad); - tms9914_secondary_address(board, priv, board->sad, board->sad >= 0); - - /* enable tms9914 interrupts */ - priv->imr0_bits |= HR_MACIE | HR_RLCIE | HR_ENDIE | HR_BOIE | HR_BIIE | - HR_SPASIE; - priv->imr1_bits |= HR_MAIE | HR_SRQIE | HR_UNCIE | HR_ERRIE | HR_IFCIE | - HR_GETIE | HR_DCASIE; - write_byte(priv, priv->imr0_bits, IMR0); - write_byte(priv, priv->imr1_bits, IMR1); - write_byte(priv, AUX_DAI, AUXCR); - - /* turn off reset state */ - write_byte(priv, AUX_CHIP_RESET, AUXCR); -} -EXPORT_SYMBOL_GPL(tms9914_online); - -#ifdef CONFIG_HAS_IOPORT -// wrapper for inb -u8 tms9914_ioport_read_byte(struct tms9914_priv *priv, unsigned int register_num) -{ - return inb(priv->iobase + register_num * priv->offset); -} -EXPORT_SYMBOL_GPL(tms9914_ioport_read_byte); - -// wrapper for outb -void tms9914_ioport_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num) -{ - outb(data, priv->iobase + register_num * priv->offset); - if (register_num == AUXCR) - udelay(1); -} -EXPORT_SYMBOL_GPL(tms9914_ioport_write_byte); -#endif - -// wrapper for readb -u8 tms9914_iomem_read_byte(struct tms9914_priv *priv, unsigned int register_num) -{ - return readb(priv->mmiobase + register_num * priv->offset); -} -EXPORT_SYMBOL_GPL(tms9914_iomem_read_byte); - -// wrapper for writeb -void tms9914_iomem_write_byte(struct tms9914_priv *priv, u8 data, unsigned int register_num) -{ - writeb(data, priv->mmiobase + register_num * priv->offset); - if (register_num == AUXCR) - udelay(1); -} -EXPORT_SYMBOL_GPL(tms9914_iomem_write_byte); - -static int __init tms9914_init_module(void) -{ - return 0; -} - -static void __exit tms9914_exit_module(void) -{ -} - -module_init(tms9914_init_module); -module_exit(tms9914_exit_module); - diff --git a/drivers/staging/gpib/tnt4882/Makefile b/drivers/staging/gpib/tnt4882/Makefile deleted file mode 100644 index fa1687ad0d1b..000000000000 --- a/drivers/staging/gpib/tnt4882/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -obj-$(CONFIG_GPIB_NI_PCI_ISA) += tnt4882.o - -tnt4882-objs := tnt4882_gpib.o mite.o - - - diff --git a/drivers/staging/gpib/tnt4882/mite.c b/drivers/staging/gpib/tnt4882/mite.c deleted file mode 100644 index 847b96f411bd..000000000000 --- a/drivers/staging/gpib/tnt4882/mite.c +++ /dev/null @@ -1,133 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only - -/* - * Hardware driver for NI Mite PCI interface chip, - * adapted from COMEDI - * - * Copyright (C) 1997-8 David A. Schleef - * Copyright (C) 2002 Frank Mori Hess - * - * The PCI-MIO E series driver was originally written by - * Tomasz Motylewski <...>, and ported to comedi by ds. - * - * References for specifications: - * - * 321747b.pdf Register Level Programmer Manual (obsolete) - * 321747c.pdf Register Level Programmer Manual (new) - * DAQ-STC reference manual - * - * Other possibly relevant info: - * - * 320517c.pdf User manual (obsolete) - * 320517f.pdf User manual (new) - * 320889a.pdf delete - * 320906c.pdf maximum signal ratings - * 321066a.pdf about 16x - * 321791a.pdf discontinuation of at-mio-16e-10 rev. c - * 321808a.pdf about at-mio-16e-10 rev P - * 321837a.pdf discontinuation of at-mio-16de-10 rev d - * 321838a.pdf about at-mio-16de-10 rev N - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/mm.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/io.h> -#include <linux/slab.h> - -#include "mite.h" - -#define PCI_MITE_SIZE 4096 -#define PCI_DAQ_SIZE 4096 - -struct mite_struct *mite_devices; - -#define TOP_OF_PAGE(x) ((x) | (~(PAGE_MASK))) - -void mite_init(void) -{ - struct pci_dev *pcidev; - struct mite_struct *mite; - - for (pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, NULL); - pcidev; - pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, pcidev)) { - mite = kzalloc(sizeof(*mite), GFP_KERNEL); - if (!mite) - return; - - mite->pcidev = pcidev; - pci_dev_get(mite->pcidev); - mite->next = mite_devices; - mite_devices = mite; - } -} - -int mite_setup(struct mite_struct *mite) -{ - u32 addr; - - if (pci_enable_device(mite->pcidev)) { - pr_err("mite: error enabling mite.\n"); - return -EIO; - } - pci_set_master(mite->pcidev); - if (pci_request_regions(mite->pcidev, "mite")) { - pr_err("mite: failed to request mite io regions.\n"); - return -EIO; - } - addr = pci_resource_start(mite->pcidev, 0); - mite->mite_phys_addr = addr; - mite->mite_io_addr = ioremap(addr, pci_resource_len(mite->pcidev, 0)); - if (!mite->mite_io_addr) { - pr_err("mite: failed to remap mite io memory address.\n"); - return -ENOMEM; - } - addr = pci_resource_start(mite->pcidev, 1); - mite->daq_phys_addr = addr; - mite->daq_io_addr = ioremap(mite->daq_phys_addr, pci_resource_len(mite->pcidev, 1)); - if (!mite->daq_io_addr) { - pr_err("mite: failed to remap daq io memory address.\n"); - return -ENOMEM; - } - writel(mite->daq_phys_addr | WENAB, mite->mite_io_addr + MITE_IODWBSR); - mite->used = 1; - return 0; -} - -void mite_cleanup(void) -{ - struct mite_struct *mite, *next; - - for (mite = mite_devices; mite; mite = next) { - next = mite->next; - if (mite->pcidev) - pci_dev_put(mite->pcidev); - kfree(mite); - } -} - -void mite_unsetup(struct mite_struct *mite) -{ - if (!mite) - return; - if (mite->mite_io_addr) { - iounmap(mite->mite_io_addr); - mite->mite_io_addr = NULL; - } - if (mite->daq_io_addr) { - iounmap(mite->daq_io_addr); - mite->daq_io_addr = NULL; - } - if (mite->mite_phys_addr) { - pci_release_regions(mite->pcidev); - pci_disable_device(mite->pcidev); - mite->mite_phys_addr = 0; - } - mite->used = 0; -} diff --git a/drivers/staging/gpib/tnt4882/mite.h b/drivers/staging/gpib/tnt4882/mite.h deleted file mode 100644 index a1fdba9672a0..000000000000 --- a/drivers/staging/gpib/tnt4882/mite.h +++ /dev/null @@ -1,234 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -/* - * Hardware driver for NI Mite PCI interface chip - * - * Copyright (C) 1999 David A. Schleef <ds@stm.lbl.gov> - */ - -#ifndef _MITE_H_ -#define _MITE_H_ - -#include <linux/pci.h> - -#define PCI_VENDOR_ID_NATINST 0x1093 - -//#define DEBUG_MITE - -#ifdef DEBUG_MITE -#define MDPRINTK(format, args...) pr_debug(format, ## args) -#else -#define MDPRINTK(args...) -#endif - -#define MITE_RING_SIZE 3000 -struct mite_dma_chain { - u32 count; - u32 addr; - u32 next; -}; - -struct mite_struct { - struct mite_struct *next; - int used; - - struct pci_dev *pcidev; - unsigned long mite_phys_addr; - void __iomem *mite_io_addr; - unsigned long daq_phys_addr; - void __iomem *daq_io_addr; - - int DMA_CheckNearEnd; - - struct mite_dma_chain ring[MITE_RING_SIZE]; -}; - -extern struct mite_struct *mite_devices; - -extern inline unsigned int mite_irq(struct mite_struct *mite) -{ - return mite->pcidev->irq; -}; - -extern inline unsigned int mite_device_id(struct mite_struct *mite) -{ - return mite->pcidev->device; -}; - -void mite_init(void); -void mite_cleanup(void); -int mite_setup(struct mite_struct *mite); -void mite_unsetup(struct mite_struct *mite); -void mite_list_devices(void); - -#define CHAN_OFFSET(x) (0x100 * (x)) - -/* DMA base for chan 0 is 0x500, chan 1 is 0x600 */ - -#define MITE_CHOR 0x500 -#define CHOR_DMARESET BIT(31) -#define CHOR_SET_SEND_TC BIT(11) -#define CHOR_CLR_SEND_TC BIT(10) -#define CHOR_SET_LPAUSE BIT(9) -#define CHOR_CLR_LPAUSE BIT(8) -#define CHOR_CLRDONE BIT(7) -#define CHOR_CLRRB BIT(6) -#define CHOR_CLRLC BIT(5) -#define CHOR_FRESET BIT(4) -#define CHOR_ABORT BIT(3) -#define CHOR_STOP BIT(2) -#define CHOR_CONT BIT(1) -#define CHOR_START BIT(0) -#define CHOR_PON (CHOR_CLR_SEND_TC | CHOR_CLR_LPAUSE) - -#define MITE_CHCR 0x504 -#define CHCR_SET_DMA_IE BIT(31) -#define CHCR_CLR_DMA_IE BIT(30) -#define CHCR_SET_LINKP_IE BIT(29) -#define CHCR_CLR_LINKP_IE BIT(28) -#define CHCR_SET_SAR_IE BIT(27) -#define CHCR_CLR_SAR_IE BIT(26) -#define CHCR_SET_DONE_IE BIT(25) -#define CHCR_CLR_DONE_IE BIT(24) -#define CHCR_SET_MRDY_IE BIT(23) -#define CHCR_CLR_MRDY_IE BIT(22) -#define CHCR_SET_DRDY_IE BIT(21) -#define CHCR_CLR_DRDY_IE BIT(20) -#define CHCR_SET_LC_IE BIT(19) -#define CHCR_CLR_LC_IE BIT(18) -#define CHCR_SET_CONT_RB_IE BIT(17) -#define CHCR_CLR_CONT_RB_IE BIT(16) -#define CHCR_FIFODIS BIT(15) -#define CHCR_FIFO_ON 0 -#define CHCR_BURSTEN BIT(14) -#define CHCR_NO_BURSTEN 0 -#define CHCR_NFTP(x) ((x) << 11) -#define CHCR_NFTP0 CHCR_NFTP(0) -#define CHCR_NFTP1 CHCR_NFTP(1) -#define CHCR_NFTP2 CHCR_NFTP(2) -#define CHCR_NFTP4 CHCR_NFTP(3) -#define CHCR_NFTP8 CHCR_NFTP(4) -#define CHCR_NFTP16 CHCR_NFTP(5) -#define CHCR_NETP(x) ((x) << 11) -#define CHCR_NETP0 CHCR_NETP(0) -#define CHCR_NETP1 CHCR_NETP(1) -#define CHCR_NETP2 CHCR_NETP(2) -#define CHCR_NETP4 CHCR_NETP(3) -#define CHCR_NETP8 CHCR_NETP(4) -#define CHCR_CHEND1 BIT(5) -#define CHCR_CHEND0 BIT(4) -#define CHCR_DIR BIT(3) -#define CHCR_DEV_TO_MEM CHCR_DIR -#define CHCR_MEM_TO_DEV 0 -#define CHCR_NORMAL ((0) << 0) -#define CHCR_CONTINUE ((1) << 0) -#define CHCR_RINGBUFF ((2) << 0) -#define CHCR_LINKSHORT ((4) << 0) -#define CHCR_LINKLONG ((5) << 0) -#define CHCRPON (CHCR_CLR_DMA_IE | CHCR_CLR_LINKP_IE | CHCR_CLR_SAR_IE | \ - CHCR_CLR_DONE_IE | CHCR_CLR_MRDY_IE | CHCR_CLR_DRDY_IE | \ - CHCR_CLR_LC_IE | CHCR_CLR_CONT_IE) - -#define MITE_TCR 0x508 - -/* CR bits */ -#define CR_RL(x) ((x) << 21) -#define CR_RL0 CR_RL(0) -#define CR_RL1 CR_RL(1) -#define CR_RL2 CR_RL(2) -#define CR_RL4 CR_RL(3) -#define CR_RL8 CR_RL(4) -#define CR_RL16 CR_RL(5) -#define CR_RL32 CR_RL(6) -#define CR_RL64 CR_RL(7) -#define CR_RD(x) ((x) << 19) -#define CR_RD0 CR_RD(0) -#define CR_RD32 CR_RD(1) -#define CR_RD512 CR_RD(2) -#define CR_RD8192 CR_RD(3) -#define CR_REQS(x) ((x) << 16) -#define CR_REQSDRQ0 CR_REQS(4) -#define CR_REQSDRQ1 CR_REQS(5) -#define CR_REQSDRQ2 CR_REQS(6) -#define CR_REQSDRQ3 CR_REQS(7) -#define CR_ASEQX(x) ((x) << 10) -#define CR_ASEQX0 CR_ASEQX(0) -#define CR_ASEQDONT CR_ASEQX0 -#define CR_ASEQXP1 CR_ASEQX(1) -#define CR_ASEQUP CR_ASEQXP1 -#define CR_ASEQXP2 CR_ASEQX(2) -#define CR_ASEQDOWN CR_ASEQXP2 -#define CR_ASEQXP4 CR_ASEQX(3) -#define CR_ASEQXP8 CR_ASEQX(4) -#define CR_ASEQXP16 CR_ASEQX(5) -#define CR_ASEQXP32 CR_ASEQX(6) -#define CR_ASEQXP64 CR_ASEQX(7) -#define CR_ASEQXM1 CR_ASEQX(9) -#define CR_ASEQXM2 CR_ASEQX(10) -#define CR_ASEQXM4 CR_ASEQX(11) -#define CR_ASEQXM8 CR_ASEQX(12) -#define CR_ASEQXM16 CR_ASEQX(13) -#define CR_ASEQXM32 CR_ASEQX(14) -#define CR_ASEQXM64 CR_ASEQX(15) -#define CR_PSIZEBYTE BIT(8) -#define CR_PSIZEHALF (2 << 8) -#define CR_PSIZEWORD (3 << 8) -#define CR_PORTCPU (0 << 6) -#define CR_PORTIO BIT(6) -#define CR_PORTVXI (2 << 6) -#define CR_PORTMXI (3 << 6) -#define CR_AMDEVICE BIT(0) - -#define CHSR_INT 0x80000000 -#define CHSR_DONE 0x02000000 -#define CHSR_LINKC 0x00080000 - -#define MITE_MCR 0x50c -#define MCRPON 0 - -#define MITE_MAR 0x510 - -#define MITE_DCR 0x514 -#define DCR_NORMAL BIT(29) -#define DCRPON 0 - -#define MITE_DAR 0x518 - -#define MITE_LKCR 0x51c - -#define MITE_LKAR 0x520 -#define MITE_LLKAR 0x524 -#define MITE_BAR 0x528 -#define MITE_BCR 0x52c -#define MITE_SAR 0x530 -#define MITE_WSCR 0x534 -#define MITE_WSER 0x538 -#define MITE_CHSR 0x53c -#define MITE_FCR 0x540 - -#define MITE_FIFO 0x80 -#define MITE_FIFOEND 0xff - -#define MITE_AMRAM 0x00 -#define MITE_AMDEVICE 0x01 -#define MITE_AMHOST_A32_SINGLE 0x09 -#define MITE_AMHOST_A24_SINGLE 0x39 -#define MITE_AMHOST_A16_SINGLE 0x29 -#define MITE_AMHOST_A32_BLOCK 0x0b -#define MITE_AMHOST_A32D64_BLOCK 0x08 -#define MITE_AMHOST_A24_BLOCK 0x3b - -enum mite_registers { - MITE_IODWBSR = 0xc0, // IO Device Window Base Size Register - MITE_CSIGR = 0x460, // chip signature - MITE_IODWBSR_1 = 0xc4, // IO Device Window Base Size Register 1 (used by 6602 boards) - MITE_IODWCR_1 = 0xf4 -}; - -enum MITE_IODWBSR_bits { - WENAB = 0x80, // window enable - WENAB_6602 = 0x8c // window enable for 6602 boards -}; - -#endif - diff --git a/drivers/staging/gpib/tnt4882/tnt4882_gpib.c b/drivers/staging/gpib/tnt4882/tnt4882_gpib.c deleted file mode 100644 index c03a976b7380..000000000000 --- a/drivers/staging/gpib/tnt4882/tnt4882_gpib.c +++ /dev/null @@ -1,1838 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -/*************************************************************************** - * National Instruments boards using tnt4882 or compatible chips (at-gpib, etc). - * copyright : (C) 2001, 2002 by Frank Mori Hess - ***************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define dev_fmt pr_fmt -#define DRV_NAME KBUILD_MODNAME - -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/isapnp.h> - -#include "nec7210.h" -#include "gpibP.h" -#include "mite.h" -#include "tnt4882_registers.h" - -static const int ISAPNP_VENDOR_ID_NI = ISAPNP_VENDOR('N', 'I', 'C'); -static const int ISAPNP_ID_NI_ATGPIB_TNT = 0xc601; -enum { - PCI_DEVICE_ID_NI_GPIB = 0xc801, - PCI_DEVICE_ID_NI_GPIB_PLUS = 0xc811, - PCI_DEVICE_ID_NI_GPIB_PLUS2 = 0x71ad, - PCI_DEVICE_ID_NI_PXIGPIB = 0xc821, - PCI_DEVICE_ID_NI_PMCGPIB = 0xc831, - PCI_DEVICE_ID_NI_PCIEGPIB = 0x70cf, - PCI_DEVICE_ID_NI_PCIE2GPIB = 0x710e, -// Measurement Computing PCI-488 same design as PCI-GPIB with TNT5004 - PCI_DEVICE_ID_MC_PCI488 = 0x7259, - PCI_DEVICE_ID_CEC_NI_GPIB = 0x7258 -}; - -// struct which defines private_data for tnt4882 devices -struct tnt4882_priv { - struct nec7210_priv nec7210_priv; - struct mite_struct *mite; - struct pnp_dev *pnp_dev; - unsigned int irq; - unsigned short imr0_bits; - unsigned short imr3_bits; - unsigned short auxg_bits; // bits written to auxiliary register G -}; - -static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board); - -// register offset for nec7210 compatible registers -static const int atgpib_reg_offset = 2; - -// number of ioports used -static const int atgpib_iosize = 32; - -/* paged io */ -static inline unsigned int tnt_paged_readb(struct tnt4882_priv *priv, unsigned long offset) -{ - iowrite8(AUX_PAGEIN, priv->nec7210_priv.mmiobase + AUXMR * priv->nec7210_priv.offset); - udelay(1); - return ioread8(priv->nec7210_priv.mmiobase + offset); -} - -static inline void tnt_paged_writeb(struct tnt4882_priv *priv, unsigned int value, - unsigned long offset) -{ - iowrite8(AUX_PAGEIN, priv->nec7210_priv.mmiobase + AUXMR * priv->nec7210_priv.offset); - udelay(1); - iowrite8(value, priv->nec7210_priv.mmiobase + offset); -} - -/* readb/writeb wrappers */ -static inline unsigned short tnt_readb(struct tnt4882_priv *priv, unsigned long offset) -{ - void __iomem *address = priv->nec7210_priv.mmiobase + offset; - unsigned long flags; - unsigned short retval; - spinlock_t *register_lock = &priv->nec7210_priv.register_page_lock; - - spin_lock_irqsave(register_lock, flags); - switch (offset) { - case CSR: - case SASR: - case ISR0: - case BSR: - switch (priv->nec7210_priv.type) { - case TNT4882: - case TNT5004: - retval = ioread8(address); - break; - case NAT4882: - retval = tnt_paged_readb(priv, offset - tnt_pagein_offset); - break; - case NEC7210: - retval = 0; - break; - default: - retval = 0; - break; - } - break; - default: - retval = ioread8(address); - break; - } - spin_unlock_irqrestore(register_lock, flags); - return retval; -} - -static inline void tnt_writeb(struct tnt4882_priv *priv, unsigned short value, unsigned long offset) -{ - void __iomem *address = priv->nec7210_priv.mmiobase + offset; - unsigned long flags; - spinlock_t *register_lock = &priv->nec7210_priv.register_page_lock; - - spin_lock_irqsave(register_lock, flags); - switch (offset) { - case KEYREG: - case IMR0: - case BCR: - switch (priv->nec7210_priv.type) { - case TNT4882: - case TNT5004: - iowrite8(value, address); - break; - case NAT4882: - tnt_paged_writeb(priv, value, offset - tnt_pagein_offset); - break; - case NEC7210: - break; - default: - break; - } - break; - default: - iowrite8(value, address); - break; - } - spin_unlock_irqrestore(register_lock, flags); -} - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("GPIB driver for National Instruments boards using tnt4882 or compatible chips"); - -static int tnt4882_line_status(const struct gpib_board *board) -{ - int status = VALID_ALL; - int bcsr_bits; - struct tnt4882_priv *tnt_priv; - - tnt_priv = board->private_data; - - bcsr_bits = tnt_readb(tnt_priv, BSR); - - if (bcsr_bits & BCSR_REN_BIT) - status |= BUS_REN; - if (bcsr_bits & BCSR_IFC_BIT) - status |= BUS_IFC; - if (bcsr_bits & BCSR_SRQ_BIT) - status |= BUS_SRQ; - if (bcsr_bits & BCSR_EOI_BIT) - status |= BUS_EOI; - if (bcsr_bits & BCSR_NRFD_BIT) - status |= BUS_NRFD; - if (bcsr_bits & BCSR_NDAC_BIT) - status |= BUS_NDAC; - if (bcsr_bits & BCSR_DAV_BIT) - status |= BUS_DAV; - if (bcsr_bits & BCSR_ATN_BIT) - status |= BUS_ATN; - - return status; -} - -static int tnt4882_t1_delay(struct gpib_board *board, unsigned int nano_sec) -{ - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - unsigned int retval; - - retval = nec7210_t1_delay(board, nec_priv, nano_sec); - if (nec_priv->type == NEC7210) - return retval; - - if (nano_sec <= 350) { - tnt_writeb(tnt_priv, MSTD, KEYREG); - retval = 350; - } else { - tnt_writeb(tnt_priv, 0, KEYREG); - } - if (nano_sec > 500 && nano_sec <= 1100) { - write_byte(nec_priv, AUXRI | USTD, AUXMR); - retval = 1100; - } else { - write_byte(nec_priv, AUXRI, AUXMR); - } - return retval; -} - -static int fifo_word_available(struct tnt4882_priv *tnt_priv) -{ - int status2; - int retval; - - status2 = tnt_readb(tnt_priv, STS2); - retval = (status2 & AEFN) && (status2 & BEFN); - - return retval; -} - -static int fifo_byte_available(struct tnt4882_priv *tnt_priv) -{ - int status2; - int retval; - - status2 = tnt_readb(tnt_priv, STS2); - retval = (status2 & AEFN) || (status2 & BEFN); - - return retval; -} - -static int fifo_xfer_done(struct tnt4882_priv *tnt_priv) -{ - int status1; - int retval; - - status1 = tnt_readb(tnt_priv, STS1); - retval = status1 & (S_DONE | S_HALT); - - return retval; -} - -static int drain_fifo_words(struct tnt4882_priv *tnt_priv, u8 *buffer, int num_bytes) -{ - int count = 0; - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - - while (fifo_word_available(tnt_priv) && count + 2 <= num_bytes) { - short word; - - word = ioread16(nec_priv->mmiobase + FIFOB); - buffer[count++] = word & 0xff; - buffer[count++] = (word >> 8) & 0xff; - } - return count; -} - -static void tnt4882_release_holdoff(struct gpib_board *board, struct tnt4882_priv *tnt_priv) -{ - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - unsigned short sasr_bits; - - sasr_bits = tnt_readb(tnt_priv, SASR); - - /* - * tnt4882 not in one-chip mode won't always release holdoff unless we - * are in the right mode when release handshake command is given - */ - if (sasr_bits & AEHS_BIT) /* holding off due to holdoff on end mode*/ { - nec7210_set_handshake_mode(board, nec_priv, HR_HLDE); - write_byte(nec_priv, AUX_FH, AUXMR); - } else if (sasr_bits & ANHS1_BIT) { /* held off due to holdoff on all data mode*/ - nec7210_set_handshake_mode(board, nec_priv, HR_HLDA); - write_byte(nec_priv, AUX_FH, AUXMR); - nec7210_set_handshake_mode(board, nec_priv, HR_HLDE); - } else { /* held off due to holdoff immediately command */ - nec7210_set_handshake_mode(board, nec_priv, HR_HLDE); - write_byte(nec_priv, AUX_FH, AUXMR); - } -} - -static int tnt4882_accel_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - size_t count = 0; - ssize_t retval = 0; - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - unsigned int bits; - s32 hw_count; - unsigned long flags; - - *bytes_read = 0; - // FIXME: really, DEV_CLEAR_BN should happen elsewhere to prevent race - clear_bit(DEV_CLEAR_BN, &nec_priv->state); - clear_bit(ADR_CHANGE_BN, &nec_priv->state); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_ENDIE, HR_ENDIE); - if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004) - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); - else - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - tnt_writeb(tnt_priv, nec_priv->auxa_bits | HR_HLDA, CCR); - bits = TNT_B_16BIT | TNT_IN | TNT_CCEN; - tnt_writeb(tnt_priv, bits, CFG); - tnt_writeb(tnt_priv, RESET_FIFO, CMDR); - udelay(1); - // load 2's complement of count into hardware counters - hw_count = -length; - tnt_writeb(tnt_priv, hw_count & 0xff, CNT0); - tnt_writeb(tnt_priv, (hw_count >> 8) & 0xff, CNT1); - tnt_writeb(tnt_priv, (hw_count >> 16) & 0xff, CNT2); - tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3); - - tnt4882_release_holdoff(board, tnt_priv); - - tnt_writeb(tnt_priv, GO, CMDR); - udelay(1); - - spin_lock_irqsave(&board->spinlock, flags); - tnt_priv->imr3_bits |= HR_DONE | HR_NEF; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - spin_unlock_irqrestore(&board->spinlock, flags); - - while (count + 2 <= length && - test_bit(RECEIVED_END_BN, &nec_priv->state) == 0 && - fifo_xfer_done(tnt_priv) == 0) { - // wait until a word is ready - if (wait_event_interruptible(board->wait, - fifo_word_available(tnt_priv) || - fifo_xfer_done(tnt_priv) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(ADR_CHANGE_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - break; - } - if (test_bit(TIMO_NUM, &board->status)) { - retval = -ETIMEDOUT; - break; - } - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) { - retval = -EINTR; - break; - } - if (test_bit(ADR_CHANGE_BN, &nec_priv->state)) { - retval = -EINTR; - break; - } - - spin_lock_irqsave(&board->spinlock, flags); - count += drain_fifo_words(tnt_priv, &buffer[count], length - count); - tnt_priv->imr3_bits |= HR_NEF; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - spin_unlock_irqrestore(&board->spinlock, flags); - - if (need_resched()) - schedule(); - } - // wait for last byte - if (count < length) { - spin_lock_irqsave(&board->spinlock, flags); - tnt_priv->imr3_bits |= HR_DONE | HR_NEF; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - spin_unlock_irqrestore(&board->spinlock, flags); - - if (wait_event_interruptible(board->wait, - fifo_xfer_done(tnt_priv) || - test_bit(RECEIVED_END_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(ADR_CHANGE_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) { - retval = -ERESTARTSYS; - } - if (test_bit(TIMO_NUM, &board->status)) - retval = -ETIMEDOUT; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - retval = -EINTR; - if (test_bit(ADR_CHANGE_BN, &nec_priv->state)) - retval = -EINTR; - count += drain_fifo_words(tnt_priv, &buffer[count], length - count); - if (fifo_byte_available(tnt_priv) && count < length) - buffer[count++] = tnt_readb(tnt_priv, FIFOB); - } - if (count < length) - tnt_writeb(tnt_priv, STOP, CMDR); - udelay(1); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_ENDIE, 0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); - /* - * force handling of any pending interrupts (seems to be needed - * to keep interrupts from getting hosed, plus for syncing - * with RECEIVED_END below) - */ - tnt4882_internal_interrupt(board); - /* RECEIVED_END should be in sync now */ - if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) - *end = 1; - if (retval < 0) { - // force immediate holdoff - write_byte(nec_priv, AUX_HLDI, AUXMR); - - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - } - *bytes_read = count; - - return retval; -} - -static int fifo_space_available(struct tnt4882_priv *tnt_priv) -{ - int status2; - int retval; - - status2 = tnt_readb(tnt_priv, STS2); - retval = (status2 & AFFN) && (status2 & BFFN); - - return retval; -} - -static unsigned int tnt_transfer_count(struct tnt4882_priv *tnt_priv) -{ - unsigned int count = 0; - - count |= tnt_readb(tnt_priv, CNT0) & 0xff; - count |= (tnt_readb(tnt_priv, CNT1) << 8) & 0xff00; - count |= (tnt_readb(tnt_priv, CNT2) << 16) & 0xff0000; - count |= (tnt_readb(tnt_priv, CNT3) << 24) & 0xff000000; - // return two's complement - return -count; -}; - -static int write_wait(struct gpib_board *board, struct tnt4882_priv *tnt_priv, - int wait_for_done, int send_commands) -{ - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - - if (wait_event_interruptible(board->wait, - (!wait_for_done && fifo_space_available(tnt_priv)) || - fifo_xfer_done(tnt_priv) || - test_bit(BUS_ERROR_BN, &nec_priv->state) || - test_bit(DEV_CLEAR_BN, &nec_priv->state) || - test_bit(TIMO_NUM, &board->status))) - return -ERESTARTSYS; - - if (test_bit(TIMO_NUM, &board->status)) - return -ETIMEDOUT; - if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state)) - return (send_commands) ? -ENOTCONN : -ECOMM; - if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) - return -EINTR; - return 0; -} - -static int generic_write(struct gpib_board *board, u8 *buffer, size_t length, - int send_eoi, int send_commands, size_t *bytes_written) -{ - size_t count = 0; - ssize_t retval = 0; - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - unsigned int bits; - s32 hw_count; - unsigned long flags; - - *bytes_written = 0; - // FIXME: really, DEV_CLEAR_BN should happen elsewhere to prevent race - clear_bit(DEV_CLEAR_BN, &nec_priv->state); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_ERRIE, HR_ERRIE); - - if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004) - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO); - else - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0); - - tnt_writeb(tnt_priv, RESET_FIFO, CMDR); - udelay(1); - - bits = TNT_B_16BIT; - if (send_eoi) { - bits |= TNT_CCEN; - if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004) - tnt_writeb(tnt_priv, AUX_SEOI, CCR); - } - if (send_commands) - bits |= TNT_COMMAND; - tnt_writeb(tnt_priv, bits, CFG); - - // load 2's complement of count into hardware counters - hw_count = -length; - tnt_writeb(tnt_priv, hw_count & 0xff, CNT0); - tnt_writeb(tnt_priv, (hw_count >> 8) & 0xff, CNT1); - tnt_writeb(tnt_priv, (hw_count >> 16) & 0xff, CNT2); - tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3); - - tnt_writeb(tnt_priv, GO, CMDR); - udelay(1); - - spin_lock_irqsave(&board->spinlock, flags); - tnt_priv->imr3_bits |= HR_DONE; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - spin_unlock_irqrestore(&board->spinlock, flags); - - while (count < length) { - // wait until byte is ready to be sent - retval = write_wait(board, tnt_priv, 0, send_commands); - if (retval < 0) - break; - if (fifo_xfer_done(tnt_priv)) - break; - spin_lock_irqsave(&board->spinlock, flags); - while (fifo_space_available(tnt_priv) && count < length) { - u16 word; - - word = buffer[count++] & 0xff; - if (count < length) - word |= (buffer[count++] << 8) & 0xff00; - iowrite16(word, nec_priv->mmiobase + FIFOB); - } -// avoid unnecessary HR_NFF interrupts -// tnt_priv->imr3_bits |= HR_NFF; -// tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - spin_unlock_irqrestore(&board->spinlock, flags); - - if (need_resched()) - schedule(); - } - // wait last byte has been sent - if (retval == 0) - retval = write_wait(board, tnt_priv, 1, send_commands); - - tnt_writeb(tnt_priv, STOP, CMDR); - udelay(1); - - nec7210_set_reg_bits(nec_priv, IMR1, HR_ERR, 0x0); - nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0x0); - /* - * force handling of any interrupts that happened - * while they were masked (this appears to be needed) - */ - tnt4882_internal_interrupt(board); - *bytes_written = length - tnt_transfer_count(tnt_priv); - return retval; -} - -static int tnt4882_accel_write(struct gpib_board *board, u8 *buffer, - size_t length, int send_eoi, size_t *bytes_written) -{ - return generic_write(board, buffer, length, send_eoi, 0, bytes_written); -} - -static int tnt4882_command(struct gpib_board *board, u8 *buffer, size_t length, - size_t *bytes_written) -{ - return generic_write(board, buffer, length, 0, 1, bytes_written); -} - -static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board) -{ - struct tnt4882_priv *priv = board->private_data; - int isr0_bits, isr3_bits, imr3_bits; - unsigned long flags; - - spin_lock_irqsave(&board->spinlock, flags); - - nec7210_interrupt(board, &priv->nec7210_priv); - - isr0_bits = tnt_readb(priv, ISR0); - isr3_bits = tnt_readb(priv, ISR3); - imr3_bits = priv->imr3_bits; - - if (isr0_bits & TNT_IFCI_BIT) - push_gpib_event(board, EVENT_IFC); - // XXX don't need this wakeup, one below should do? -// wake_up_interruptible(&board->wait); - - if (isr3_bits & HR_NFF) - priv->imr3_bits &= ~HR_NFF; - if (isr3_bits & HR_NEF) - priv->imr3_bits &= ~HR_NEF; - if (isr3_bits & HR_DONE) - priv->imr3_bits &= ~HR_DONE; - if (isr3_bits & (HR_INTR | HR_TLCI)) { - dev_dbg(board->gpib_dev, "minor %i isr0 0x%x imr0 0x%x isr3 0x%x imr3 0x%x\n", - board->minor, isr0_bits, priv->imr0_bits, isr3_bits, imr3_bits); - tnt_writeb(priv, priv->imr3_bits, IMR3); - wake_up_interruptible(&board->wait); - } - spin_unlock_irqrestore(&board->spinlock, flags); - return IRQ_HANDLED; -} - -static irqreturn_t tnt4882_interrupt(int irq, void *arg) -{ - return tnt4882_internal_interrupt(arg); -} - -// wrappers for interface functions -static int tnt4882_read(struct gpib_board *board, u8 *buffer, size_t length, int *end, - size_t *bytes_read) -{ - struct tnt4882_priv *priv = board->private_data; - struct nec7210_priv *nec_priv = &priv->nec7210_priv; - int retval; - int dummy; - - retval = nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read); - - if (retval < 0) { // force immediate holdoff - write_byte(nec_priv, AUX_HLDI, AUXMR); - - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - - nec7210_read_data_in(board, nec_priv, &dummy); - } - return retval; -} - -static int tnt4882_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi, - size_t *bytes_written) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written); -} - -static int tnt4882_command_unaccel(struct gpib_board *board, u8 *buffer, - size_t length, size_t *bytes_written) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written); -} - -static int tnt4882_take_control(struct gpib_board *board, int synchronous) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_take_control(board, &priv->nec7210_priv, synchronous); -} - -static int tnt4882_go_to_standby(struct gpib_board *board) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_go_to_standby(board, &priv->nec7210_priv); -} - -static int tnt4882_request_system_control(struct gpib_board *board, int request_control) -{ - struct tnt4882_priv *priv = board->private_data; - int retval; - - if (request_control) { - tnt_writeb(priv, SETSC, CMDR); - udelay(1); - } - retval = nec7210_request_system_control(board, &priv->nec7210_priv, request_control); - if (!request_control) { - tnt_writeb(priv, CLRSC, CMDR); - udelay(1); - } - return retval; -} - -static void tnt4882_interface_clear(struct gpib_board *board, int assert) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_interface_clear(board, &priv->nec7210_priv, assert); -} - -static void tnt4882_remote_enable(struct gpib_board *board, int enable) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_remote_enable(board, &priv->nec7210_priv, enable); -} - -static int tnt4882_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits); -} - -static void tnt4882_disable_eos(struct gpib_board *board) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_disable_eos(board, &priv->nec7210_priv); -} - -static unsigned int tnt4882_update_status(struct gpib_board *board, unsigned int clear_mask) -{ - unsigned long flags; - u8 line_status; - struct tnt4882_priv *priv = board->private_data; - - spin_lock_irqsave(&board->spinlock, flags); - board->status &= ~clear_mask; - nec7210_update_status_nolock(board, &priv->nec7210_priv); - /* set / clear SRQ state since it is not cleared by interrupt */ - line_status = tnt_readb(priv, BSR); - if (line_status & BCSR_SRQ_BIT) - set_bit(SRQI_NUM, &board->status); - else - clear_bit(SRQI_NUM, &board->status); - spin_unlock_irqrestore(&board->spinlock, flags); - return board->status; -} - -static int tnt4882_primary_address(struct gpib_board *board, unsigned int address) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_primary_address(board, &priv->nec7210_priv, address); -} - -static int tnt4882_secondary_address(struct gpib_board *board, unsigned int address, int enable) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable); -} - -static int tnt4882_parallel_poll(struct gpib_board *board, u8 *result) -{ - struct tnt4882_priv *tnt_priv = board->private_data; - - if (tnt_priv->nec7210_priv.type != NEC7210) { - tnt_priv->auxg_bits |= RPP2_BIT; - write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR); - udelay(2); // FIXME use parallel poll timeout - *result = read_byte(&tnt_priv->nec7210_priv, CPTR); - tnt_priv->auxg_bits &= ~RPP2_BIT; - write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR); - return 0; - } else { - return nec7210_parallel_poll(board, &tnt_priv->nec7210_priv, result); - } -} - -static void tnt4882_parallel_poll_configure(struct gpib_board *board, u8 config) -{ - struct tnt4882_priv *priv = board->private_data; - - if (priv->nec7210_priv.type == TNT5004) { - /* configure locally */ - write_byte(&priv->nec7210_priv, AUXRI | 0x4, AUXMR); - if (config) - /* set response + clear sense */ - write_byte(&priv->nec7210_priv, PPR | config, AUXMR); - else - /* disable ppoll */ - write_byte(&priv->nec7210_priv, PPR | 0x10, AUXMR); - } else { - nec7210_parallel_poll_configure(board, &priv->nec7210_priv, config); - } -} - -static void tnt4882_parallel_poll_response(struct gpib_board *board, int ist) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist); -} - -/* - * this is just used by the old nec7210 isa interfaces, the newer - * boards use tnt4882_serial_poll_response2 - */ -static void tnt4882_serial_poll_response(struct gpib_board *board, u8 status) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_serial_poll_response(board, &priv->nec7210_priv, status); -} - -static void tnt4882_serial_poll_response2(struct gpib_board *board, u8 status, - int new_reason_for_service) -{ - struct tnt4882_priv *priv = board->private_data; - unsigned long flags; - const int MSS = status & request_service_bit; - const int reqt = MSS && new_reason_for_service; - const int reqf = MSS == 0; - - spin_lock_irqsave(&board->spinlock, flags); - if (reqt) { - priv->nec7210_priv.srq_pending = 1; - clear_bit(SPOLL_NUM, &board->status); - } else { - if (reqf) - priv->nec7210_priv.srq_pending = 0; - } - if (reqt) - /* - * It may seem like a race to issue reqt before updating - * the status byte, but it is not. The chip does not - * issue the reqt until the SPMR is written to at - * a later time. - */ - write_byte(&priv->nec7210_priv, AUX_REQT, AUXMR); - else if (reqf) - write_byte(&priv->nec7210_priv, AUX_REQF, AUXMR); - /* - * We need to always zero bit 6 of the status byte before writing it to - * the SPMR to insure we are using - * serial poll mode SP1, and not accidentally triggering mode SP3. - */ - write_byte(&priv->nec7210_priv, status & ~request_service_bit, SPMR); - spin_unlock_irqrestore(&board->spinlock, flags); -} - -static u8 tnt4882_serial_poll_status(struct gpib_board *board) -{ - struct tnt4882_priv *priv = board->private_data; - - return nec7210_serial_poll_status(board, &priv->nec7210_priv); -} - -static void tnt4882_return_to_local(struct gpib_board *board) -{ - struct tnt4882_priv *priv = board->private_data; - - nec7210_return_to_local(board, &priv->nec7210_priv); -} - -static void tnt4882_board_reset(struct tnt4882_priv *tnt_priv, struct gpib_board *board) -{ - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - - tnt_priv->imr0_bits = 0; - tnt_writeb(tnt_priv, tnt_priv->imr0_bits, IMR0); - tnt_priv->imr3_bits = 0; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - tnt_readb(tnt_priv, IMR0); - tnt_readb(tnt_priv, IMR3); - nec7210_board_reset(nec_priv, board); -} - -static int tnt4882_allocate_private(struct gpib_board *board) -{ - struct tnt4882_priv *tnt_priv; - - board->private_data = kmalloc(sizeof(struct tnt4882_priv), GFP_KERNEL); - if (!board->private_data) - return -1; - tnt_priv = board->private_data; - memset(tnt_priv, 0, sizeof(struct tnt4882_priv)); - init_nec7210_private(&tnt_priv->nec7210_priv); - return 0; -} - -static void tnt4882_free_private(struct gpib_board *board) -{ - kfree(board->private_data); - board->private_data = NULL; -} - -static void tnt4882_init(struct tnt4882_priv *tnt_priv, const struct gpib_board *board) -{ - struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv; - - /* Turbo488 software reset */ - tnt_writeb(tnt_priv, SOFT_RESET, CMDR); - udelay(1); - - // turn off one-chip mode - tnt_writeb(tnt_priv, NODMA, HSSEL); - tnt_writeb(tnt_priv, 0, ACCWR); - // make sure we are in 7210 mode - tnt_writeb(tnt_priv, AUX_7210, AUXCR); - udelay(1); - // registers might be swapped, so write it to the swapped address too - tnt_writeb(tnt_priv, AUX_7210, SWAPPED_AUXCR); - udelay(1); - // turn on one-chip mode - if (nec_priv->type == TNT4882 || nec_priv->type == TNT5004) - tnt_writeb(tnt_priv, NODMA | TNT_ONE_CHIP_BIT, HSSEL); - else - tnt_writeb(tnt_priv, NODMA, HSSEL); - - nec7210_board_reset(nec_priv, board); - // read-clear isr0 - tnt_readb(tnt_priv, ISR0); - - // enable passing of nat4882 interrupts - tnt_priv->imr3_bits = HR_TLCI; - tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3); - - // enable interrupt - tnt_writeb(tnt_priv, 0x1, INTRT); - - // force immediate holdoff - write_byte(&tnt_priv->nec7210_priv, AUX_HLDI, AUXMR); - - set_bit(RFD_HOLDOFF_BN, &nec_priv->state); - - tnt_priv->auxg_bits = AUXRG | NTNL_BIT; - write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR); - - nec7210_board_online(nec_priv, board); - // enable interface clear interrupt for event queue - tnt_priv->imr0_bits = TNT_IMR0_ALWAYS_BITS | TNT_ATNI_BIT | TNT_IFCIE_BIT; - tnt_writeb(tnt_priv, tnt_priv->imr0_bits, IMR0); -} - -static int ni_pci_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct tnt4882_priv *tnt_priv; - struct nec7210_priv *nec_priv; - int isr_flags = IRQF_SHARED; - int retval; - struct mite_struct *mite; - - board->status = 0; - - if (tnt4882_allocate_private(board)) - return -ENOMEM; - tnt_priv = board->private_data; - nec_priv = &tnt_priv->nec7210_priv; - nec_priv->type = TNT4882; - nec_priv->read_byte = nec7210_locking_iomem_read_byte; - nec_priv->write_byte = nec7210_locking_iomem_write_byte; - nec_priv->offset = atgpib_reg_offset; - - if (!mite_devices) - return -ENODEV; - - for (mite = mite_devices; mite; mite = mite->next) { - short found_board; - - if (mite->used) - continue; - if (config->pci_bus >= 0 && config->pci_bus != mite->pcidev->bus->number) - continue; - if (config->pci_slot >= 0 && config->pci_slot != PCI_SLOT(mite->pcidev->devfn)) - continue; - switch (mite_device_id(mite)) { - case PCI_DEVICE_ID_NI_GPIB: - case PCI_DEVICE_ID_NI_GPIB_PLUS: - case PCI_DEVICE_ID_NI_GPIB_PLUS2: - case PCI_DEVICE_ID_NI_PXIGPIB: - case PCI_DEVICE_ID_NI_PMCGPIB: - case PCI_DEVICE_ID_NI_PCIEGPIB: - case PCI_DEVICE_ID_NI_PCIE2GPIB: -// support for Measurement Computing PCI-488 - case PCI_DEVICE_ID_MC_PCI488: - case PCI_DEVICE_ID_CEC_NI_GPIB: - found_board = 1; - break; - default: - found_board = 0; - break; - } - if (found_board) - break; - } - if (!mite) - return -ENODEV; - - tnt_priv->mite = mite; - retval = mite_setup(tnt_priv->mite); - if (retval < 0) - return retval; - - nec_priv->mmiobase = tnt_priv->mite->daq_io_addr; - - // get irq - retval = request_irq(mite_irq(tnt_priv->mite), tnt4882_interrupt, isr_flags, "ni-pci-gpib", - board); - if (retval) { - dev_err(board->gpib_dev, "failed to obtain pci irq %d\n", mite_irq(tnt_priv->mite)); - return retval; - } - tnt_priv->irq = mite_irq(tnt_priv->mite); - - // TNT5004 detection - switch (tnt_readb(tnt_priv, CSR) & 0xf0) { - case 0x30: - nec_priv->type = TNT4882; - break; - case 0x40: - nec_priv->type = TNT5004; - break; - } - tnt4882_init(tnt_priv, board); - - return 0; -} - -static void ni_pci_detach(struct gpib_board *board) -{ - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (tnt_priv) { - nec_priv = &tnt_priv->nec7210_priv; - - if (nec_priv->mmiobase) - tnt4882_board_reset(tnt_priv, board); - if (tnt_priv->irq) - free_irq(tnt_priv->irq, board); - if (tnt_priv->mite) - mite_unsetup(tnt_priv->mite); - } - tnt4882_free_private(board); -} - -static int ni_isapnp_find(struct pnp_dev **dev) -{ - *dev = pnp_find_dev(NULL, ISAPNP_VENDOR_ID_NI, - ISAPNP_FUNCTION(ISAPNP_ID_NI_ATGPIB_TNT), NULL); - if (!*dev || !(*dev)->card) - return -ENODEV; - if (pnp_device_attach(*dev) < 0) - return -EBUSY; - if (pnp_activate_dev(*dev) < 0) { - pnp_device_detach(*dev); - return -EAGAIN; - } - if (!pnp_port_valid(*dev, 0) || !pnp_irq_valid(*dev, 0)) { - pnp_device_detach(*dev); - return -EINVAL; - } - return 0; -} - -static int ni_isa_attach_common(struct gpib_board *board, const struct gpib_board_config *config, - enum nec7210_chipset chipset) -{ - struct tnt4882_priv *tnt_priv; - struct nec7210_priv *nec_priv; - int isr_flags = 0; - u32 iobase; - int irq; - int retval; - - board->status = 0; - - if (tnt4882_allocate_private(board)) - return -ENOMEM; - tnt_priv = board->private_data; - nec_priv = &tnt_priv->nec7210_priv; - nec_priv->type = chipset; - nec_priv->read_byte = nec7210_locking_ioport_read_byte; - nec_priv->write_byte = nec7210_locking_ioport_write_byte; - nec_priv->offset = atgpib_reg_offset; - - // look for plug-n-play board - if (config->ibbase == 0) { - struct pnp_dev *dev; - - retval = ni_isapnp_find(&dev); - if (retval < 0) - return retval; - tnt_priv->pnp_dev = dev; - iobase = pnp_port_start(dev, 0); - irq = pnp_irq(dev, 0); - } else { - iobase = config->ibbase; - irq = config->ibirq; - } - // allocate ioports - if (!request_region(iobase, atgpib_iosize, "atgpib")) - return -EBUSY; - - nec_priv->mmiobase = ioport_map(iobase, atgpib_iosize); - if (!nec_priv->mmiobase) - return -EBUSY; - - // get irq - retval = request_irq(irq, tnt4882_interrupt, isr_flags, "atgpib", board); - if (retval) { - dev_err(board->gpib_dev, "failed to request ISA irq %d\n", irq); - return retval; - } - tnt_priv->irq = irq; - - tnt4882_init(tnt_priv, board); - - return 0; -} - -static int ni_tnt_isa_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return ni_isa_attach_common(board, config, TNT4882); -} - -static int ni_nat4882_isa_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return ni_isa_attach_common(board, config, NAT4882); -} - -static int ni_nec_isa_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - return ni_isa_attach_common(board, config, NEC7210); -} - -static void ni_isa_detach(struct gpib_board *board) -{ - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (tnt_priv) { - nec_priv = &tnt_priv->nec7210_priv; - if (nec_priv->iobase) - tnt4882_board_reset(tnt_priv, board); - if (tnt_priv->irq) - free_irq(tnt_priv->irq, board); - if (nec_priv->mmiobase) - ioport_unmap(nec_priv->mmiobase); - if (nec_priv->iobase) - release_region(nec_priv->iobase, atgpib_iosize); - if (tnt_priv->pnp_dev) - pnp_device_detach(tnt_priv->pnp_dev); - } - tnt4882_free_private(board); -} - -static int tnt4882_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - return 0; -} - -static struct gpib_interface ni_pci_interface = { - .name = "ni_pci", - .attach = ni_pci_attach, - .detach = ni_pci_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_pci_accel_interface = { - .name = "ni_pci_accel", - .attach = ni_pci_attach, - .detach = ni_pci_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_isa_interface = { - .name = "ni_isa", - .attach = ni_tnt_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_nat4882_isa_interface = { - .name = "ni_nat4882_isa", - .attach = ni_nat4882_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_read, - .write = tnt4882_write, - .command = tnt4882_command_unaccel, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_nec_isa_interface = { - .name = "ni_nec_isa", - .attach = ni_nec_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_read, - .write = tnt4882_write, - .command = tnt4882_command_unaccel, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response = tnt4882_serial_poll_response, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_isa_accel_interface = { - .name = "ni_isa_accel", - .attach = ni_tnt_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_nat4882_isa_accel_interface = { - .name = "ni_nat4882_isa_accel", - .attach = ni_nat4882_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command_unaccel, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response2 = tnt4882_serial_poll_response2, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_nec_isa_accel_interface = { - .name = "ni_nec_isa_accel", - .attach = ni_nec_isa_attach, - .detach = ni_isa_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command_unaccel, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = NULL, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response = tnt4882_serial_poll_response, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static const struct pci_device_id tnt4882_pci_table[] = { - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB_PLUS)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB_PLUS2)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PXIGPIB)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PMCGPIB)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PCIEGPIB)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PCIE2GPIB)}, - // support for Measurement Computing PCI-488 - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_MC_PCI488)}, - {PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_CEC_NI_GPIB)}, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, tnt4882_pci_table); - -static struct pci_driver tnt4882_pci_driver = { - .name = DRV_NAME, - .id_table = tnt4882_pci_table, - .probe = &tnt4882_pci_probe -}; - -#if 0 -/* unused, will be needed when the driver is turned into a pnp_driver */ -static const struct pnp_device_id tnt4882_pnp_table[] = { - {.id = "NICC601"}, - {.id = ""} -}; -MODULE_DEVICE_TABLE(pnp, tnt4882_pnp_table); -#endif - -#ifdef CONFIG_GPIB_PCMCIA -static struct gpib_interface ni_pcmcia_interface; -static struct gpib_interface ni_pcmcia_accel_interface; -static int __init init_ni_gpib_cs(void); -static void __exit exit_ni_gpib_cs(void); -#endif - -static int __init tnt4882_init_module(void) -{ - int result; - - result = pci_register_driver(&tnt4882_pci_driver); - if (result) { - pr_err("pci_register_driver failed: error = %d\n", result); - return result; - } - - result = gpib_register_driver(&ni_isa_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_isa; - } - - result = gpib_register_driver(&ni_isa_accel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_isa_accel; - } - - result = gpib_register_driver(&ni_nat4882_isa_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_nat4882_isa; - } - - result = gpib_register_driver(&ni_nat4882_isa_accel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_nat4882_isa_accel; - } - - result = gpib_register_driver(&ni_nec_isa_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_nec_isa; - } - - result = gpib_register_driver(&ni_nec_isa_accel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_nec_isa_accel; - } - - result = gpib_register_driver(&ni_pci_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pci; - } - - result = gpib_register_driver(&ni_pci_accel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pci_accel; - } - -#ifdef CONFIG_GPIB_PCMCIA - result = gpib_register_driver(&ni_pcmcia_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pcmcia; - } - - result = gpib_register_driver(&ni_pcmcia_accel_interface, THIS_MODULE); - if (result) { - pr_err("gpib_register_driver failed: error = %d\n", result); - goto err_pcmcia_accel; - } - - result = init_ni_gpib_cs(); - if (result) { - pr_err("pcmcia_register_driver failed: error = %d\n", result); - goto err_pcmcia_driver; - } -#endif - - mite_init(); - - return 0; - -#ifdef CONFIG_GPIB_PCMCIA -err_pcmcia_driver: - gpib_unregister_driver(&ni_pcmcia_accel_interface); -err_pcmcia_accel: - gpib_unregister_driver(&ni_pcmcia_interface); -err_pcmcia: -#endif - gpib_unregister_driver(&ni_pci_accel_interface); -err_pci_accel: - gpib_unregister_driver(&ni_pci_interface); -err_pci: - gpib_unregister_driver(&ni_nec_isa_accel_interface); -err_nec_isa_accel: - gpib_unregister_driver(&ni_nec_isa_interface); -err_nec_isa: - gpib_unregister_driver(&ni_nat4882_isa_accel_interface); -err_nat4882_isa_accel: - gpib_unregister_driver(&ni_nat4882_isa_interface); -err_nat4882_isa: - gpib_unregister_driver(&ni_isa_accel_interface); -err_isa_accel: - gpib_unregister_driver(&ni_isa_interface); -err_isa: - pci_unregister_driver(&tnt4882_pci_driver); - - return result; -} - -static void __exit tnt4882_exit_module(void) -{ - gpib_unregister_driver(&ni_isa_interface); - gpib_unregister_driver(&ni_isa_accel_interface); - gpib_unregister_driver(&ni_nat4882_isa_interface); - gpib_unregister_driver(&ni_nat4882_isa_accel_interface); - gpib_unregister_driver(&ni_nec_isa_interface); - gpib_unregister_driver(&ni_nec_isa_accel_interface); - gpib_unregister_driver(&ni_pci_interface); - gpib_unregister_driver(&ni_pci_accel_interface); -#ifdef CONFIG_GPIB_PCMCIA - gpib_unregister_driver(&ni_pcmcia_interface); - gpib_unregister_driver(&ni_pcmcia_accel_interface); - exit_ni_gpib_cs(); -#endif - - mite_cleanup(); - - pci_unregister_driver(&tnt4882_pci_driver); -} - -#ifdef CONFIG_GPIB_PCMCIA - -#include <linux/kernel.h> -#include <linux/moduleparam.h> -#include <linux/ptrace.h> -#include <linux/timer.h> -#include <linux/io.h> - -#include <pcmcia/cistpl.h> -#include <pcmcia/cisreg.h> -#include <pcmcia/ds.h> - -static int ni_gpib_config(struct pcmcia_device *link); -static void ni_gpib_release(struct pcmcia_device *link); -static void ni_pcmcia_detach(struct gpib_board *board); - -/* - * A linked list of "instances" of the dummy device. Each actual - * PCMCIA card corresponds to one device instance, and is described - * by one dev_link_t structure (defined in ds.h). - * - * You may not want to use a linked list for this -- for example, the - * memory card driver uses an array of dev_link_t pointers, where minor - * device numbers are used to derive the corresponding array index. - * - * I think this dev_list is obsolete but the pointer is needed to keep - * the module instance for the ni_pcmcia_attach function. - */ - -static struct pcmcia_device *curr_dev; - -struct local_info_t { - struct pcmcia_device *p_dev; - struct gpib_board *dev; - int stop; - struct bus_operations *bus; -}; - -/* - * ni_gpib_probe() creates an "instance" of the driver, allocating - * local data structures for one device. The device is registered - * with Card Services. - */ - -static int ni_gpib_probe(struct pcmcia_device *link) -{ - struct local_info_t *info; - //struct struct gpib_board *dev; - - /* Allocate space for private device-specific data */ - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - info->p_dev = link; - link->priv = info; - - /* - * General socket configuration defaults can go here. In this - * client, we assume very little, and rely on the CIS for almost - * everything. In most clients, many details (i.e., number, sizes, - * and attributes of IO windows) are fixed by the nature of the - * device, and can be hard-wired here. - */ - link->config_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; - - /* Register with Card Services */ - curr_dev = link; - return ni_gpib_config(link); -} - -/* - * This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ -static void ni_gpib_remove(struct pcmcia_device *link) -{ - struct local_info_t *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (info->dev) - ni_pcmcia_detach(info->dev); - ni_gpib_release(link); - - //free_netdev(dev); - kfree(info); -} - -static int ni_gpib_config_iteration(struct pcmcia_device *link, void *priv_data) -{ - int retval; - - retval = pcmcia_request_io(link); - if (retval != 0) - return retval; - - return 0; -} - -/* - * ni_gpib_config() is scheduled to run after a CARD_INSERTION event - * is received, to configure the PCMCIA socket, and to make the - * device available to the system. - */ -static int ni_gpib_config(struct pcmcia_device *link) -{ - //struct local_info_t *info = link->priv; - //struct gpib_board *dev = info->dev; - int last_ret; - - last_ret = pcmcia_loop_config(link, &ni_gpib_config_iteration, NULL); - if (last_ret) { - dev_warn(&link->dev, "no configuration found\n"); - ni_gpib_release(link); - return last_ret; - } - - last_ret = pcmcia_enable_device(link); - if (last_ret) { - ni_gpib_release(link); - return last_ret; - } - return 0; -} /* ni_gpib_config */ - -/* - * After a card is removed, ni_gpib_release() will unregister the - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ -static void ni_gpib_release(struct pcmcia_device *link) -{ - pcmcia_disable_device(link); -} /* ni_gpib_release */ - -static int ni_gpib_suspend(struct pcmcia_device *link) -{ - //struct local_info_t *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - if (link->open) - dev_warn(&link->dev, "Device still open\n"); - //netif_device_detach(dev); - - return 0; -} - -static int ni_gpib_resume(struct pcmcia_device *link) -{ - //struct local_info_t *info = link->priv; - //struct struct gpib_board *dev = info->dev; - - /*if (link->open) { - * ni_gpib_probe(dev); / really? - * //netif_device_attach(dev); - *} - */ - return ni_gpib_config(link); -} - -static struct pcmcia_device_id ni_pcmcia_ids[] = { - PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4882), - PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0c71), // NI PCMCIA-GPIB+ - PCMCIA_DEVICE_NULL -}; - -MODULE_DEVICE_TABLE(pcmcia, ni_pcmcia_ids); - -static struct pcmcia_driver ni_gpib_cs_driver = { - .name = "ni_gpib_cs", - .owner = THIS_MODULE, - .drv = { .name = "ni_gpib_cs", }, - .id_table = ni_pcmcia_ids, - .probe = ni_gpib_probe, - .remove = ni_gpib_remove, - .suspend = ni_gpib_suspend, - .resume = ni_gpib_resume, -}; - -static int __init init_ni_gpib_cs(void) -{ - return pcmcia_register_driver(&ni_gpib_cs_driver); -} - -static void __exit exit_ni_gpib_cs(void) -{ - pcmcia_unregister_driver(&ni_gpib_cs_driver); -} - -static const int pcmcia_gpib_iosize = 32; - -static int ni_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config) -{ - struct local_info_t *info; - struct tnt4882_priv *tnt_priv; - struct nec7210_priv *nec_priv; - int isr_flags = IRQF_SHARED; - int retval; - - if (!curr_dev) - return -ENODEV; - - info = curr_dev->priv; - info->dev = board; - - board->status = 0; - - if (tnt4882_allocate_private(board)) - return -ENOMEM; - - tnt_priv = board->private_data; - nec_priv = &tnt_priv->nec7210_priv; - nec_priv->type = TNT4882; - nec_priv->read_byte = nec7210_locking_ioport_read_byte; - nec_priv->write_byte = nec7210_locking_ioport_write_byte; - nec_priv->offset = atgpib_reg_offset; - - if (!request_region(curr_dev->resource[0]->start, resource_size(curr_dev->resource[0]), - DRV_NAME)) - return -ENOMEM; - - nec_priv->mmiobase = ioport_map(curr_dev->resource[0]->start, - resource_size(curr_dev->resource[0])); - if (!nec_priv->mmiobase) - return -ENOMEM; - - // get irq - retval = request_irq(curr_dev->irq, tnt4882_interrupt, isr_flags, DRV_NAME, board); - if (retval) { - dev_err(board->gpib_dev, "failed to obtain PCMCIA irq %d\n", curr_dev->irq); - return retval; - } - tnt_priv->irq = curr_dev->irq; - - tnt4882_init(tnt_priv, board); - - return 0; -} - -static void ni_pcmcia_detach(struct gpib_board *board) -{ - struct tnt4882_priv *tnt_priv = board->private_data; - struct nec7210_priv *nec_priv; - - if (tnt_priv) { - nec_priv = &tnt_priv->nec7210_priv; - if (tnt_priv->irq) - free_irq(tnt_priv->irq, board); - if (nec_priv->mmiobase) - ioport_unmap(nec_priv->mmiobase); - if (nec_priv->iobase) { - tnt4882_board_reset(tnt_priv, board); - release_region(nec_priv->iobase, pcmcia_gpib_iosize); - } - } - tnt4882_free_private(board); -} - -static struct gpib_interface ni_pcmcia_interface = { - .name = "ni_pcmcia", - .attach = ni_pcmcia_attach, - .detach = ni_pcmcia_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response = tnt4882_serial_poll_response, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -static struct gpib_interface ni_pcmcia_accel_interface = { - .name = "ni_pcmcia_accel", - .attach = ni_pcmcia_attach, - .detach = ni_pcmcia_detach, - .read = tnt4882_accel_read, - .write = tnt4882_accel_write, - .command = tnt4882_command, - .take_control = tnt4882_take_control, - .go_to_standby = tnt4882_go_to_standby, - .request_system_control = tnt4882_request_system_control, - .interface_clear = tnt4882_interface_clear, - .remote_enable = tnt4882_remote_enable, - .enable_eos = tnt4882_enable_eos, - .disable_eos = tnt4882_disable_eos, - .parallel_poll = tnt4882_parallel_poll, - .parallel_poll_configure = tnt4882_parallel_poll_configure, - .parallel_poll_response = tnt4882_parallel_poll_response, - .local_parallel_poll_mode = NULL, // XXX - .line_status = tnt4882_line_status, - .update_status = tnt4882_update_status, - .primary_address = tnt4882_primary_address, - .secondary_address = tnt4882_secondary_address, - .serial_poll_response = tnt4882_serial_poll_response, - .serial_poll_status = tnt4882_serial_poll_status, - .t1_delay = tnt4882_t1_delay, - .return_to_local = tnt4882_return_to_local, -}; - -#endif // CONFIG_GPIB_PCMCIA - -module_init(tnt4882_init_module); -module_exit(tnt4882_exit_module); diff --git a/drivers/staging/gpib/uapi/gpib.h b/drivers/staging/gpib/uapi/gpib.h deleted file mode 100644 index 2a7f5eeb9777..000000000000 --- a/drivers/staging/gpib/uapi/gpib.h +++ /dev/null @@ -1,104 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_H -#define _GPIB_H - -#define GPIB_MAX_NUM_BOARDS 16 -#define GPIB_MAX_NUM_DESCRIPTORS 0x1000 - -enum ibsta_bit_numbers { - DCAS_NUM = 0, - DTAS_NUM = 1, - LACS_NUM = 2, - TACS_NUM = 3, - ATN_NUM = 4, - CIC_NUM = 5, - REM_NUM = 6, - LOK_NUM = 7, - CMPL_NUM = 8, - EVENT_NUM = 9, - SPOLL_NUM = 10, - RQS_NUM = 11, - SRQI_NUM = 12, - END_NUM = 13, - TIMO_NUM = 14, - ERR_NUM = 15 -}; - -/* IBSTA status bits (returned by all functions) */ -enum ibsta_bits { - DCAS = (1 << DCAS_NUM), /* device clear state */ - DTAS = (1 << DTAS_NUM), /* device trigger state */ - LACS = (1 << LACS_NUM), /* GPIB interface is addressed as Listener */ - TACS = (1 << TACS_NUM), /* GPIB interface is addressed as Talker */ - ATN = (1 << ATN_NUM), /* Attention is asserted */ - CIC = (1 << CIC_NUM), /* GPIB interface is Controller-in-Charge */ - REM = (1 << REM_NUM), /* remote state */ - LOK = (1 << LOK_NUM), /* lockout state */ - CMPL = (1 << CMPL_NUM), /* I/O is complete */ - EVENT = (1 << EVENT_NUM), /* DCAS, DTAS, or IFC has occurred */ - SPOLL = (1 << SPOLL_NUM), /* board serial polled by busmaster */ - RQS = (1 << RQS_NUM), /* Device requesting service */ - SRQI = (1 << SRQI_NUM), /* SRQ is asserted */ - END = (1 << END_NUM), /* EOI or EOS encountered */ - TIMO = (1 << TIMO_NUM), /* Time limit on I/O or wait function exceeded */ - ERR = (1 << ERR_NUM), /* Function call terminated on error */ - - device_status_mask = ERR | TIMO | END | CMPL | RQS, - board_status_mask = ERR | TIMO | END | CMPL | SPOLL | - EVENT | LOK | REM | CIC | ATN | TACS | LACS | DTAS | DCAS | SRQI, -}; - -/* End-of-string (EOS) modes for use with ibeos */ - -enum eos_flags { - EOS_MASK = 0x1c00, - REOS = 0x0400, /* Terminate reads on EOS */ - XEOS = 0x800, /* assert EOI when EOS char is sent */ - BIN = 0x1000 /* Do 8-bit compare on EOS */ -}; - -/* GPIB Bus Control Lines bit vector */ -enum bus_control_line { - VALID_DAV = 0x01, - VALID_NDAC = 0x02, - VALID_NRFD = 0x04, - VALID_IFC = 0x08, - VALID_REN = 0x10, - VALID_SRQ = 0x20, - VALID_ATN = 0x40, - VALID_EOI = 0x80, - VALID_ALL = 0xff, - BUS_DAV = 0x0100, /* DAV line status bit */ - BUS_NDAC = 0x0200, /* NDAC line status bit */ - BUS_NRFD = 0x0400, /* NRFD line status bit */ - BUS_IFC = 0x0800, /* IFC line status bit */ - BUS_REN = 0x1000, /* REN line status bit */ - BUS_SRQ = 0x2000, /* SRQ line status bit */ - BUS_ATN = 0x4000, /* ATN line status bit */ - BUS_EOI = 0x8000 /* EOI line status bit */ -}; - -enum ppe_bits { - PPC_DISABLE = 0x10, - PPC_SENSE = 0x8, /* parallel poll sense bit */ - PPC_DIO_MASK = 0x7 -}; - -enum { - request_service_bit = 0x40, -}; - -enum gpib_events { - EVENT_NONE = 0, - EVENT_DEV_TRG = 1, - EVENT_DEV_CLR = 2, - EVENT_IFC = 3 -}; - -#endif /* _GPIB_H */ - diff --git a/drivers/staging/gpib/uapi/gpib_ioctl.h b/drivers/staging/gpib/uapi/gpib_ioctl.h deleted file mode 100644 index d544d8e4362c..000000000000 --- a/drivers/staging/gpib/uapi/gpib_ioctl.h +++ /dev/null @@ -1,167 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ - -/*************************************************************************** - * copyright : (C) 2002 by Frank Mori Hess - ***************************************************************************/ - -#ifndef _GPIB_IOCTL_H -#define _GPIB_IOCTL_H - -#include <asm/ioctl.h> -#include <linux/types.h> - -#define GPIB_CODE 160 - -struct gpib_board_type_ioctl { - char name[100]; -}; - -/* argument for read/write/command ioctls */ -struct gpib_read_write_ioctl { - __u64 buffer_ptr; - __u32 requested_transfer_count; - __u32 completed_transfer_count; - __s32 end; /* end flag return for reads, end io suppression request for cmd*/ - __s32 handle; -}; - -struct gpib_open_dev_ioctl { - __u32 handle; - __u32 pad; - __s32 sad; - __u32 is_board; -}; - -struct gpib_close_dev_ioctl { - __u32 handle; -}; - -struct gpib_serial_poll_ioctl { - __u32 pad; - __s32 sad; - __u8 status_byte; - __u8 padding[3]; /* align to 32 bit boundary */ -}; - -struct gpib_eos_ioctl { - __s32 eos; - __s32 eos_flags; -}; - -struct gpib_wait_ioctl { - __s32 handle; - __s32 wait_mask; - __s32 clear_mask; - __s32 set_mask; - __s32 ibsta; - __s32 pad; - __s32 sad; - __u32 usec_timeout; -}; - -struct gpib_online_ioctl { - __u64 init_data_ptr; - __s32 init_data_length; - __s32 online; -}; - -struct gpib_spoll_bytes_ioctl { - __u32 num_bytes; - __u32 pad; - __s32 sad; -}; - -struct gpib_board_info_ioctl { - __u32 pad; - __s32 sad; - __s32 parallel_poll_configuration; - __s32 autopolling; - __s32 is_system_controller; - __u32 t1_delay; - unsigned ist : 1; - unsigned no_7_bit_eos : 1; - unsigned padding :30; /* align to 32 bit boundary */ -}; - -struct gpib_select_pci_ioctl { - __s32 pci_bus; - __s32 pci_slot; -}; - -struct gpib_ppoll_config_ioctl { - __u8 config; - unsigned set_ist : 1; - unsigned clear_ist : 1; - unsigned padding :22; /* align to 32 bit boundary */ -}; - -struct gpib_pad_ioctl { - __u32 handle; - __u32 pad; -}; - -struct gpib_sad_ioctl { - __u32 handle; - __s32 sad; -}; - -/* select a piece of hardware to attach by its sysfs device path */ -struct gpib_select_device_path_ioctl { - char device_path[0x1000]; -}; - -/* update status byte and request service */ -struct gpib_request_service2 { - __u8 status_byte; - __u8 padding[3]; /* align to 32 bit boundary */ - __s32 new_reason_for_service; -}; - -/* Standard functions. */ -enum gpib_ioctl { - IBRD = _IOWR(GPIB_CODE, 100, struct gpib_read_write_ioctl), - IBWRT = _IOWR(GPIB_CODE, 101, struct gpib_read_write_ioctl), - IBCMD = _IOWR(GPIB_CODE, 102, struct gpib_read_write_ioctl), - IBOPENDEV = _IOWR(GPIB_CODE, 3, struct gpib_open_dev_ioctl), - IBCLOSEDEV = _IOW(GPIB_CODE, 4, struct gpib_close_dev_ioctl), - IBWAIT = _IOWR(GPIB_CODE, 5, struct gpib_wait_ioctl), - IBRPP = _IOWR(GPIB_CODE, 6, __u8), - - IBSIC = _IOW(GPIB_CODE, 9, __u32), - IBSRE = _IOW(GPIB_CODE, 10, __s32), - IBGTS = _IO(GPIB_CODE, 11), - IBCAC = _IOW(GPIB_CODE, 12, __s32), - IBLINES = _IOR(GPIB_CODE, 14, __s16), - IBPAD = _IOW(GPIB_CODE, 15, struct gpib_pad_ioctl), - IBSAD = _IOW(GPIB_CODE, 16, struct gpib_sad_ioctl), - IBTMO = _IOW(GPIB_CODE, 17, __u32), - IBRSP = _IOWR(GPIB_CODE, 18, struct gpib_serial_poll_ioctl), - IBEOS = _IOW(GPIB_CODE, 19, struct gpib_eos_ioctl), - IBRSV = _IOW(GPIB_CODE, 20, __u8), - CFCBASE = _IOW(GPIB_CODE, 21, __u64), - CFCIRQ = _IOW(GPIB_CODE, 22, __u32), - CFCDMA = _IOW(GPIB_CODE, 23, __u32), - CFCBOARDTYPE = _IOW(GPIB_CODE, 24, struct gpib_board_type_ioctl), - - IBMUTEX = _IOW(GPIB_CODE, 26, __s32), - IBSPOLL_BYTES = _IOWR(GPIB_CODE, 27, struct gpib_spoll_bytes_ioctl), - IBPPC = _IOW(GPIB_CODE, 28, struct gpib_ppoll_config_ioctl), - IBBOARD_INFO = _IOR(GPIB_CODE, 29, struct gpib_board_info_ioctl), - - IBQUERY_BOARD_RSV = _IOR(GPIB_CODE, 31, __s32), - IBSELECT_PCI = _IOWR(GPIB_CODE, 32, struct gpib_select_pci_ioctl), - IBEVENT = _IOR(GPIB_CODE, 33, __s16), - IBRSC = _IOW(GPIB_CODE, 34, __s32), - IB_T1_DELAY = _IOW(GPIB_CODE, 35, __u32), - IBLOC = _IO(GPIB_CODE, 36), - - IBAUTOSPOLL = _IOW(GPIB_CODE, 38, __s16), - IBONL = _IOW(GPIB_CODE, 39, struct gpib_online_ioctl), - IBPP2_SET = _IOW(GPIB_CODE, 40, __s16), - IBPP2_GET = _IOR(GPIB_CODE, 41, __s16), - IBSELECT_DEVICE_PATH = _IOW(GPIB_CODE, 43, struct gpib_select_device_path_ioctl), - /* 44 was IBSELECT_SERIAL_NUMBER */ - IBRSV2 = _IOW(GPIB_CODE, 45, struct gpib_request_service2) -}; - -#endif /* _GPIB_IOCTL_H */ |