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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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44510d6fa0
We allow multiple functions on a single bus. We suppress the ZPCI_DEVFN definition and replace its occurences with zpci->devfn. We verify the number of device during the registration. There can never be more domains in use than existing devices, so we do not need to verify the count of domain after having verified the count of devices. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
32 lines
822 B
C
32 lines
822 B
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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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_init(void);
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void zpci_release_device(struct kref *kref);
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static inline void zpci_zdev_put(struct zpci_dev *zdev)
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{
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kref_put(&zdev->kref, zpci_release_device);
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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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struct list_head *resources);
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static inline struct zpci_dev *get_zdev_by_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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