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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/s390/pci/pci_bus.h
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/* 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 <[email protected]>

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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_scan_busses(void);

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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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