s390/pci/pci_bus.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright IBM Corp. 2020
0004  *
0005  * Author(s):
0006  *   Pierre Morel <pmorel@linux.ibm.com>
0007  *
0008  */
0009
0010 int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops);
0011 void zpci_bus_device_unregister(struct zpci_dev *zdev);
0012
0013 int zpci_bus_scan_bus(struct zpci_bus *zbus);
0014 void zpci_bus_scan_busses(void);
0015
0016 int zpci_bus_scan_device(struct zpci_dev *zdev);
0017 void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error);
0018
0019 void zpci_release_device(struct kref *kref);
0020 static inline void zpci_zdev_put(struct zpci_dev *zdev)
0021 {
0022     if (zdev)
0023         kref_put(&zdev->kref, zpci_release_device);
0024 }
0025
0026 static inline void zpci_zdev_get(struct zpci_dev *zdev)
0027 {
0028     kref_get(&zdev->kref);
0029 }
0030
0031 int zpci_alloc_domain(int domain);
0032 void zpci_free_domain(int domain);
0033 int zpci_setup_bus_resources(struct zpci_dev *zdev,
0034                  struct list_head *resources);
0035
0036 static inline struct zpci_dev *zdev_from_bus(struct pci_bus *bus,
0037                          unsigned int devfn)
0038 {
0039     struct zpci_bus *zbus = bus->sysdata;
0040
0041     return (devfn >= ZPCI_FUNCTIONS_PER_BUS) ? NULL : zbus->function[devfn];
0042 }
0043