projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d1e6dc91 LD |
1 | /* |
| 2 | * Code borrowed from powerpc/kernel/pci-common.c | |
| 3 | * | |
| 4 | * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM | |
| 5 | * Copyright (C) 2014 ARM Ltd. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * version 2 as published by the Free Software Foundation. | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| a9cb97fe | 13 | #include <linux/acpi.h> |
| d1e6dc91 LD |
14 | #include <linux/init.h> |
| 15 | #include <linux/io.h> | |
| 16 | #include <linux/kernel.h> | |
| 17 | #include <linux/mm.h> | |
| 18 | #include <linux/of_pci.h> | |
| 19 | #include <linux/of_platform.h> | |
| 2ab51dde | 20 | #include <linux/pci.h> |
| d1e6dc91 LD |
21 | #include <linux/slab.h> |
| 22 | ||
| d1e6dc91 LD |
23 | /* |
| 24 | * Called after each bus is probed, but before its children are examined | |
| 25 | */ | |
| 26 | void pcibios_fixup_bus(struct pci_bus *bus) | |
| 27 | { | |
| 28 | /* nothing to do, expected to be removed in the future */ | |
| 29 | } | |
| 30 | ||
| 31 | /* | |
| 32 | * We don't have to worry about legacy ISA devices, so nothing to do here | |
| 33 | */ | |
| 34 | resource_size_t pcibios_align_resource(void *data, const struct resource *res, | |
| 35 | resource_size_t size, resource_size_t align) | |
| 36 | { | |
| 37 | return res->start; | |
| 38 | } | |
| 39 | ||
| 72407514 LP |
40 | /** |
| 41 | * pcibios_enable_device - Enable I/O and memory. | |
| 42 | * @dev: PCI device to be enabled | |
| 43 | * @mask: bitmask of BARs to enable | |
| 44 | */ | |
| 45 | int pcibios_enable_device(struct pci_dev *dev, int mask) | |
| 46 | { | |
| 47 | if (pci_has_flag(PCI_PROBE_ONLY)) | |
| 48 | return 0; | |
| 49 | ||
| 50 | return pci_enable_resources(dev, mask); | |
| 51 | } | |
| 52 | ||
| d1e6dc91 | 53 | /* |
| d8ed75d5 | 54 | * Try to assign the IRQ number when probing a new device |
| d1e6dc91 | 55 | */ |
| d8ed75d5 | 56 | int pcibios_alloc_irq(struct pci_dev *dev) |
| d1e6dc91 | 57 | { |
| d8ed75d5 TN |
58 | if (acpi_disabled) |
| 59 | dev->irq = of_irq_parse_and_map_pci(dev, 0, 0); | |
| 60 | #ifdef CONFIG_ACPI | |
| 61 | else | |
| 62 | return acpi_pci_irq_enable(dev); | |
| 63 | #endif | |
| d1e6dc91 LD |
64 | |
| 65 | return 0; | |
| 66 | } | |
| a9cb97fe HG |
67 | |
| 68 | /* | |
| 69 | * raw_pci_read/write - Platform-specific PCI config space access. | |
| 70 | */ | |
| 71 | int raw_pci_read(unsigned int domain, unsigned int bus, | |
| 72 | unsigned int devfn, int reg, int len, u32 *val) | |
| 73 | { | |
| 74 | return -ENXIO; | |
| 75 | } | |
| 76 | ||
| 77 | int raw_pci_write(unsigned int domain, unsigned int bus, | |
| 78 | unsigned int devfn, int reg, int len, u32 val) | |
| 79 | { | |
| 80 | return -ENXIO; | |
| 81 | } | |
| 82 | ||
| 1a2db300 GK |
83 | #ifdef CONFIG_NUMA |
| 84 | ||
| 85 | int pcibus_to_node(struct pci_bus *bus) | |
| 86 | { | |
| 87 | return dev_to_node(&bus->dev); | |
| 88 | } | |
| 89 | EXPORT_SYMBOL(pcibus_to_node); | |
| 90 | ||
| 91 | #endif | |
| 92 | ||
| a9cb97fe | 93 | #ifdef CONFIG_ACPI |
| 2ab51dde TN |
94 | |
| 95 | int acpi_pci_bus_find_domain_nr(struct pci_bus *bus) | |
| 96 | { | |
| 97 | return 0; | |
| 98 | } | |
| 99 | ||
| a9cb97fe HG |
100 | /* Root bridge scanning */ |
| 101 | struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) | |
| 102 | { | |
| 103 | /* TODO: Should be revisited when implementing PCI on ACPI */ | |
| 104 | return NULL; | |
| 105 | } | |
| 106 | #endif |