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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2020
*
* Author(s):
* Pierre Morel <pmorel@linux.ibm.com>
*
*/
#ifndef __S390_PCI_BUS_H
#define __S390_PCI_BUS_H
#include <linux/pci.h>
int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops);
void zpci_bus_device_unregister(struct zpci_dev *zdev);
int zpci_bus_scan_bus(struct zpci_bus *zbus);
void zpci_bus_get_next(struct zpci_bus **pos);
/**
* zpci_bus_for_each - iterate over all the registered zbus objects
* @pos: a struct zpci_bus * as cursor
*
* Acquires and releases references as the cursor iterates over the registered
* objects. Is tolerant against concurrent removals of objects.
*
* Context: Process context. May sleep.
*/
#define zpci_bus_for_each(pos) \
for ((pos) = NULL, zpci_bus_get_next(&(pos)); (pos) != NULL; \
zpci_bus_get_next(&(pos)))
int zpci_bus_scan_device(struct zpci_dev *zdev);
void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error);
void zpci_release_device(struct kref *kref);
void zpci_zdev_put(struct zpci_dev *zdev);
static inline void zpci_zdev_get(struct zpci_dev *zdev)
{
kref_get(&zdev->kref);
}
int zpci_alloc_domain(int domain);
void zpci_free_domain(int domain);
int zpci_setup_bus_resources(struct zpci_dev *zdev);
static inline struct zpci_dev *zdev_from_bus(struct pci_bus *bus,
unsigned int devfn)
{
struct zpci_bus *zbus = bus->sysdata;
return (devfn >= ZPCI_FUNCTIONS_PER_BUS) ? NULL : zbus->function[devfn];
}
#endif /* __S390_PCI_BUS_H */
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