Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | */ |
| 6 | #ifndef _ASM_PCI_H |
| 7 | #define _ASM_PCI_H |
| 8 | |
| 9 | #include <linux/config.h> |
| 10 | #include <linux/mm.h> |
| 11 | |
| 12 | #ifdef __KERNEL__ |
| 13 | |
| 14 | /* |
| 15 | * This file essentially defines the interface between board |
| 16 | * specific PCI code and MIPS common PCI code. Should potentially put |
| 17 | * into include/asm/pci.h file. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/ioport.h> |
| 21 | |
| 22 | /* |
| 23 | * Each pci channel is a top-level PCI bus seem by CPU. A machine with |
| 24 | * multiple PCI channels may have multiple PCI host controllers or a |
| 25 | * single controller supporting multiple channels. |
| 26 | */ |
| 27 | struct pci_controller { |
| 28 | struct pci_controller *next; |
| 29 | struct pci_bus *bus; |
| 30 | |
| 31 | struct pci_ops *pci_ops; |
| 32 | struct resource *mem_resource; |
| 33 | unsigned long mem_offset; |
| 34 | struct resource *io_resource; |
| 35 | unsigned long io_offset; |
| 36 | |
| 37 | unsigned int index; |
| 38 | /* For compatibility with current (as of July 2003) pciutils |
| 39 | and XFree86. Eventually will be removed. */ |
| 40 | unsigned int need_domain_info; |
| 41 | |
| 42 | int iommu; |
| 43 | }; |
| 44 | |
| 45 | /* |
| 46 | * Used by boards to register their PCI busses before the actual scanning. |
| 47 | */ |
| 48 | extern struct pci_controller * alloc_pci_controller(void); |
| 49 | extern void register_pci_controller(struct pci_controller *hose); |
| 50 | |
| 51 | /* |
| 52 | * board supplied pci irq fixup routine |
| 53 | */ |
| 54 | extern int pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin); |
| 55 | |
| 56 | |
| 57 | /* Can be used to override the logic in pci_scan_bus for skipping |
| 58 | already-configured bus numbers - to be used for buggy BIOSes |
| 59 | or architectures with incomplete PCI setup by the loader */ |
| 60 | |
| 61 | extern unsigned int pcibios_assign_all_busses(void); |
| 62 | |
| 63 | #define pcibios_scan_all_fns(a, b) 0 |
| 64 | |
| 65 | extern unsigned long PCIBIOS_MIN_IO; |
| 66 | extern unsigned long PCIBIOS_MIN_MEM; |
| 67 | |
| 68 | #define PCIBIOS_MIN_CARDBUS_IO 0x4000 |
| 69 | |
| 70 | extern void pcibios_set_master(struct pci_dev *dev); |
| 71 | |
David Shaohua Li | c9c3e45 | 2005-04-01 00:07:31 -0500 | [diff] [blame] | 72 | static inline void pcibios_penalize_isa_irq(int irq, int active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
| 74 | /* We don't do dynamic PCI IRQ allocation */ |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | * Dynamic DMA mapping stuff. |
| 79 | * MIPS has everything mapped statically. |
| 80 | */ |
| 81 | |
| 82 | #include <linux/types.h> |
| 83 | #include <linux/slab.h> |
| 84 | #include <asm/scatterlist.h> |
| 85 | #include <linux/string.h> |
| 86 | #include <asm/io.h> |
| 87 | |
| 88 | struct pci_dev; |
| 89 | |
| 90 | /* |
| 91 | * The PCI address space does equal the physical memory address space. The |
| 92 | * networking and block device layers use this boolean for bounce buffer |
| 93 | * decisions. This is set if any hose does not have an IOMMU. |
| 94 | */ |
| 95 | extern unsigned int PCI_DMA_BUS_IS_PHYS; |
| 96 | |
Ralf Baechle | 4ce588c | 2005-09-03 15:56:19 -0700 | [diff] [blame] | 97 | #ifdef CONFIG_DMA_NEED_PCI_MAP_STATE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | /* pci_unmap_{single,page} is not a nop, thus... */ |
| 100 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME; |
| 101 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) __u32 LEN_NAME; |
| 102 | #define pci_unmap_addr(PTR, ADDR_NAME) ((PTR)->ADDR_NAME) |
| 103 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) (((PTR)->ADDR_NAME) = (VAL)) |
| 104 | #define pci_unmap_len(PTR, LEN_NAME) ((PTR)->LEN_NAME) |
| 105 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) (((PTR)->LEN_NAME) = (VAL)) |
| 106 | |
Ralf Baechle | 4ce588c | 2005-09-03 15:56:19 -0700 | [diff] [blame] | 107 | #else /* CONFIG_DMA_NEED_PCI_MAP_STATE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | /* pci_unmap_{page,single} is a nop so... */ |
| 110 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) |
| 111 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) |
| 112 | #define pci_unmap_addr(PTR, ADDR_NAME) (0) |
| 113 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) |
| 114 | #define pci_unmap_len(PTR, LEN_NAME) (0) |
| 115 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) |
| 116 | |
Ralf Baechle | 4ce588c | 2005-09-03 15:56:19 -0700 | [diff] [blame] | 117 | #endif /* CONFIG_DMA_NEED_PCI_MAP_STATE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | /* This is always fine. */ |
| 120 | #define pci_dac_dma_supported(pci_dev, mask) (1) |
| 121 | |
| 122 | extern dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev, |
| 123 | struct page *page, unsigned long offset, int direction); |
| 124 | extern struct page *pci_dac_dma_to_page(struct pci_dev *pdev, |
| 125 | dma64_addr_t dma_addr); |
| 126 | extern unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev, |
| 127 | dma64_addr_t dma_addr); |
| 128 | extern void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, |
| 129 | dma64_addr_t dma_addr, size_t len, int direction); |
| 130 | extern void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, |
| 131 | dma64_addr_t dma_addr, size_t len, int direction); |
| 132 | |
Andrew Morton | bb4a61b | 2005-06-06 23:07:46 -0700 | [diff] [blame] | 133 | #ifdef CONFIG_PCI |
David S. Miller | e24c2d9 | 2005-06-02 12:55:50 -0700 | [diff] [blame] | 134 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, |
| 135 | enum pci_dma_burst_strategy *strat, |
| 136 | unsigned long *strategy_parameter) |
| 137 | { |
| 138 | *strat = PCI_DMA_BURST_INFINITY; |
| 139 | *strategy_parameter = ~0UL; |
| 140 | } |
Andrew Morton | bb4a61b | 2005-06-06 23:07:46 -0700 | [diff] [blame] | 141 | #endif |
David S. Miller | e24c2d9 | 2005-06-02 12:55:50 -0700 | [diff] [blame] | 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | extern void pcibios_resource_to_bus(struct pci_dev *dev, |
| 144 | struct pci_bus_region *region, struct resource *res); |
Yoichi Yuasa | e63ea56 | 2005-09-03 15:56:20 -0700 | [diff] [blame^] | 145 | extern void pcibios_bus_to_resource(struct pci_dev *dev, |
| 146 | struct resource *res, struct pci_bus_region *region); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
| 148 | #ifdef CONFIG_PCI_DOMAINS |
| 149 | |
| 150 | #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index |
| 151 | |
| 152 | static inline int pci_proc_domain(struct pci_bus *bus) |
| 153 | { |
| 154 | struct pci_controller *hose = bus->sysdata; |
| 155 | return hose->need_domain_info; |
| 156 | } |
| 157 | |
| 158 | #endif /* CONFIG_PCI_DOMAINS */ |
| 159 | |
| 160 | #endif /* __KERNEL__ */ |
| 161 | |
| 162 | /* implement the pci_ DMA API in terms of the generic device dma_ one */ |
| 163 | #include <asm-generic/pci-dma-compat.h> |
| 164 | |
| 165 | static inline void pcibios_add_platform_entries(struct pci_dev *dev) |
| 166 | { |
| 167 | } |
| 168 | |
| 169 | /* Do platform specific device initialization at pci_enable_device() time */ |
| 170 | extern int pcibios_plat_dev_init(struct pci_dev *dev); |
| 171 | |
Yoichi Yuasa | e2de849 | 2005-09-03 15:56:19 -0700 | [diff] [blame] | 172 | static inline struct resource * |
| 173 | pcibios_select_root(struct pci_dev *pdev, struct resource *res) |
| 174 | { |
| 175 | struct resource *root = NULL; |
| 176 | |
| 177 | if (res->flags & IORESOURCE_IO) |
| 178 | root = &ioport_resource; |
| 179 | if (res->flags & IORESOURCE_MEM) |
| 180 | root = &iomem_resource; |
| 181 | |
| 182 | return root; |
| 183 | } |
| 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | #endif /* _ASM_PCI_H */ |