1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright IBM Corp. 2020
 4 *
 5 * Author(s):
 6 *   Pierre Morel <pmorel@linux.ibm.com>
 7 *
 8 */
 9#ifndef __S390_PCI_BUS_H
10#define __S390_PCI_BUS_H
11
12#include <linux/pci.h>
13
14int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops);
15void zpci_bus_device_unregister(struct zpci_dev *zdev);
16
17int zpci_bus_scan_bus(struct zpci_bus *zbus);
18void zpci_bus_scan_busses(void);
19
20int zpci_bus_scan_device(struct zpci_dev *zdev);
21void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error);
22
23void zpci_release_device(struct kref *kref);
24static inline void zpci_zdev_put(struct zpci_dev *zdev)
25{
26	if (zdev)
27		kref_put(&zdev->kref, zpci_release_device);
28}
29
30static inline void zpci_zdev_get(struct zpci_dev *zdev)
31{
32	kref_get(&zdev->kref);
33}
34
35int zpci_alloc_domain(int domain);
36void zpci_free_domain(int domain);
37int zpci_setup_bus_resources(struct zpci_dev *zdev);
38
39static inline struct zpci_dev *zdev_from_bus(struct pci_bus *bus,
40					     unsigned int devfn)
41{
42	struct zpci_bus *zbus = bus->sysdata;
43
44	return (devfn >= ZPCI_FUNCTIONS_PER_BUS) ? NULL : zbus->function[devfn];
45}
46
47#endif /* __S390_PCI_BUS_H */