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1da177e4 LT |
1 | #ifndef __ALPHA_PCI_H |
2 | #define __ALPHA_PCI_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #include <linux/spinlock.h> | |
7c53664d | 7 | #include <linux/dma-mapping.h> |
1da177e4 LT |
8 | #include <asm/scatterlist.h> |
9 | #include <asm/machvec.h> | |
151d16d5 | 10 | #include <asm-generic/pci-bridge.h> |
1da177e4 LT |
11 | |
12 | /* | |
13 | * The following structure is used to manage multiple PCI busses. | |
14 | */ | |
15 | ||
16 | struct pci_dev; | |
17 | struct pci_bus; | |
18 | struct resource; | |
19 | struct pci_iommu_arena; | |
20 | struct page; | |
21 | ||
22 | /* A controller. Used to manage multiple PCI busses. */ | |
23 | ||
24 | struct pci_controller { | |
25 | struct pci_controller *next; | |
26 | struct pci_bus *bus; | |
27 | struct resource *io_space; | |
28 | struct resource *mem_space; | |
29 | ||
30 | /* The following are for reporting to userland. The invariant is | |
31 | that if we report a BWX-capable dense memory, we do not report | |
32 | a sparse memory at all, even if it exists. */ | |
33 | unsigned long sparse_mem_base; | |
34 | unsigned long dense_mem_base; | |
35 | unsigned long sparse_io_base; | |
36 | unsigned long dense_io_base; | |
37 | ||
38 | /* This one's for the kernel only. It's in KSEG somewhere. */ | |
39 | unsigned long config_space_base; | |
40 | ||
41 | unsigned int index; | |
42 | /* For compatibility with current (as of July 2003) pciutils | |
43 | and XFree86. Eventually will be removed. */ | |
44 | unsigned int need_domain_info; | |
45 | ||
46 | struct pci_iommu_arena *sg_pci; | |
47 | struct pci_iommu_arena *sg_isa; | |
48 | ||
49 | void *sysdata; | |
50 | }; | |
51 | ||
52 | /* Override the logic in pci_scan_bus for skipping already-configured | |
53 | bus numbers. */ | |
54 | ||
55 | #define pcibios_assign_all_busses() 1 | |
1da177e4 LT |
56 | |
57 | #define PCIBIOS_MIN_IO alpha_mv.min_io_address | |
58 | #define PCIBIOS_MIN_MEM alpha_mv.min_mem_address | |
59 | ||
60 | extern void pcibios_set_master(struct pci_dev *dev); | |
61 | ||
1da177e4 LT |
62 | /* IOMMU controls. */ |
63 | ||
64 | /* The PCI address space does not equal the physical memory address space. | |
65 | The networking and block device layers use this boolean for bounce buffer | |
66 | decisions. */ | |
67 | #define PCI_DMA_BUS_IS_PHYS 0 | |
68 | ||
c186caca | 69 | #ifdef CONFIG_PCI |
1da177e4 | 70 | |
c186caca FT |
71 | /* implement the pci_ DMA API in terms of the generic device dma_ one */ |
72 | #include <asm-generic/pci-dma-compat.h> | |
1da177e4 | 73 | |
e24c2d96 DM |
74 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, |
75 | enum pci_dma_burst_strategy *strat, | |
76 | unsigned long *strategy_parameter) | |
77 | { | |
78 | unsigned long cacheline_size; | |
79 | u8 byte; | |
80 | ||
81 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); | |
82 | if (byte == 0) | |
83 | cacheline_size = 1024; | |
84 | else | |
85 | cacheline_size = (int) byte * 4; | |
86 | ||
87 | *strat = PCI_DMA_BURST_BOUNDARY; | |
88 | *strategy_parameter = cacheline_size; | |
89 | } | |
bb4a61b6 | 90 | #endif |
e24c2d96 | 91 | |
1da177e4 LT |
92 | /* TODO: integrate with include/asm-generic/pci.h ? */ |
93 | static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) | |
94 | { | |
95 | return channel ? 15 : 14; | |
96 | } | |
97 | ||
1da177e4 LT |
98 | #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index |
99 | ||
100 | static inline int pci_proc_domain(struct pci_bus *bus) | |
101 | { | |
102 | struct pci_controller *hose = bus->sysdata; | |
103 | return hose->need_domain_info; | |
104 | } | |
105 | ||
1da177e4 LT |
106 | #endif /* __KERNEL__ */ |
107 | ||
108 | /* Values for the `which' argument to sys_pciconfig_iobase. */ | |
109 | #define IOBASE_HOSE 0 | |
110 | #define IOBASE_SPARSE_MEM 1 | |
111 | #define IOBASE_DENSE_MEM 2 | |
112 | #define IOBASE_SPARSE_IO 3 | |
113 | #define IOBASE_DENSE_IO 4 | |
114 | #define IOBASE_ROOT_BUS 5 | |
115 | #define IOBASE_FROM_HOSE 0x10000 | |
116 | ||
8255cf35 AB |
117 | extern struct pci_dev *isa_bridge; |
118 | ||
10a0ef39 IK |
119 | extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, |
120 | size_t count); | |
121 | extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, | |
122 | size_t count); | |
123 | extern int pci_mmap_legacy_page_range(struct pci_bus *bus, | |
124 | struct vm_area_struct *vma, | |
125 | enum pci_mmap_state mmap_state); | |
126 | extern void pci_adjust_legacy_attr(struct pci_bus *bus, | |
127 | enum pci_mmap_state mmap_type); | |
128 | #define HAVE_PCI_LEGACY 1 | |
129 | ||
130 | extern int pci_create_resource_files(struct pci_dev *dev); | |
131 | extern void pci_remove_resource_files(struct pci_dev *dev); | |
132 | ||
1da177e4 | 133 | #endif /* __ALPHA_PCI_H */ |