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 14 int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops); 15 void zpci_bus_device_unregister(struct zpci_dev *zdev); 16 17 int zpci_bus_scan_bus(struct zpci_bus *zbus); 18 void zpci_bus_scan_busses(void); 19 20 int zpci_bus_scan_device(struct zpci_dev *zdev); 21 void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error); 22 23 void zpci_release_device(struct kref *kref); 24 static inline void zpci_zdev_put(struct zpci_dev *zdev) 25 { 26 if (zdev) 27 kref_put(&zdev->kref, zpci_release_device); 28 } 29 30 static inline void zpci_zdev_get(struct zpci_dev *zdev) 31 { 32 kref_get(&zdev->kref); 33 } 34 35 int zpci_alloc_domain(int domain); 36 void zpci_free_domain(int domain); 37 int zpci_setup_bus_resources(struct zpci_dev *zdev); 38 39 static 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 */ 48