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