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1 | /* |
2 | * linux/include/asm-generic/pci.h |
3 | * |
4 | * Copyright (C) 2003 Russell King |
5 | */ |
6 | #ifndef _ASM_GENERIC_PCI_H |
7 | #define _ASM_GENERIC_PCI_H |
8 | |
9 | /** |
10 | * pcibios_resource_to_bus - convert resource to PCI bus address |
11 | * @dev: device which owns this resource |
12 | * @region: converted bus-centric region (start,end) |
13 | * @res: resource to convert |
14 | * |
15 | * Convert a resource to a PCI device bus address or bus window. |
16 | */ |
17 | static inline void |
18 | pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, |
19 | struct resource *res) |
20 | { |
21 | region->start = res->start; |
22 | region->end = res->end; |
23 | } |
24 | |
25 | static inline void |
26 | pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, |
27 | struct pci_bus_region *region) |
28 | { |
29 | res->start = region->start; |
30 | res->end = region->end; |
31 | } |
32 | |
33 | static inline struct resource * |
34 | pcibios_select_root(struct pci_dev *pdev, struct resource *res) |
35 | { |
36 | struct resource *root = NULL; |
37 | |
38 | if (res->flags & IORESOURCE_IO) |
39 | root = &ioport_resource; |
40 | if (res->flags & IORESOURCE_MEM) |
41 | root = &iomem_resource; |
42 | |
43 | return root; |
44 | } |
45 | |
46 | #ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ |
47 | static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) |
48 | { |
49 | return channel ? 15 : 14; |
50 | } |
51 | #endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */ |
52 | |
53 | /* |
54 | * By default, assume that no iommu is in use and that the PCI |
55 | * space is mapped to address physical 0. |
56 | */ |
57 | #ifndef PCI_DMA_BUS_IS_PHYS |
58 | #define PCI_DMA_BUS_IS_PHYS (1) |
59 | #endif |
60 | |
61 | #endif /* _ASM_GENERIC_PCI_H */ |
62 |
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