projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| d1e6dc91 LD |
2 | /* |
| 3 | * Code borrowed from powerpc/kernel/pci-common.c | |
| 4 | * | |
| 5 | * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM | |
| 6 | * Copyright (C) 2014 ARM Ltd. | |
| d1e6dc91 LD |
7 | */ |
| 8 | ||
| 2ab51dde | 9 | #include <linux/pci.h> |
| a9cb97fe HG |
10 | |
| 11 | /* | |
| 12 | * raw_pci_read/write - Platform-specific PCI config space access. | |
| 13 | */ | |
| 14 | int raw_pci_read(unsigned int domain, unsigned int bus, | |
| 15 | unsigned int devfn, int reg, int len, u32 *val) | |
| 16 | { | |
| f058f4fb TN |
17 | struct pci_bus *b = pci_find_bus(domain, bus); |
| 18 | ||
| 19 | if (!b) | |
| 20 | return PCIBIOS_DEVICE_NOT_FOUND; | |
| 21 | return b->ops->read(b, devfn, reg, len, val); | |
| a9cb97fe HG |
22 | } |
| 23 | ||
| 24 | int raw_pci_write(unsigned int domain, unsigned int bus, | |
| 25 | unsigned int devfn, int reg, int len, u32 val) | |
| 26 | { | |
| f058f4fb TN |
27 | struct pci_bus *b = pci_find_bus(domain, bus); |
| 28 | ||
| 29 | if (!b) | |
| 30 | return PCIBIOS_DEVICE_NOT_FOUND; | |
| 31 | return b->ops->write(b, devfn, reg, len, val); | |
| a9cb97fe HG |
32 | } |
| 33 | ||
| 1a2db300 GK |
34 | #ifdef CONFIG_NUMA |
| 35 | ||
| 36 | int pcibus_to_node(struct pci_bus *bus) | |
| 37 | { | |
| 38 | return dev_to_node(&bus->dev); | |
| 39 | } | |
| 40 | EXPORT_SYMBOL(pcibus_to_node); | |
| 41 | ||
| 42 | #endif |