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1da177e4 LT |
1 | #ifndef __ASM_SH_PCI_H |
2 | #define __ASM_SH_PCI_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #include <linux/dma-mapping.h> | |
7 | ||
8 | /* Can be used to override the logic in pci_scan_bus for skipping | |
9 | already-configured bus numbers - to be used for buggy BIOSes | |
10 | or architectures with incomplete PCI setup by the loader */ | |
11 | ||
12 | #define pcibios_assign_all_busses() 1 | |
13 | #define pcibios_scan_all_fns(a, b) 0 | |
14 | ||
15 | /* | |
16 | * A board can define one or more PCI channels that represent built-in (or | |
17 | * external) PCI controllers. | |
18 | */ | |
19 | struct pci_channel { | |
20 | struct pci_ops *pci_ops; | |
21 | struct resource *io_resource; | |
22 | struct resource *mem_resource; | |
23 | int first_devfn; | |
24 | int last_devfn; | |
25 | }; | |
26 | ||
27 | /* | |
28 | * Each board initializes this array and terminates it with a NULL entry. | |
29 | */ | |
30 | extern struct pci_channel board_pci_channels[]; | |
31 | ||
32 | #define PCIBIOS_MIN_IO board_pci_channels->io_resource->start | |
33 | #define PCIBIOS_MIN_MEM board_pci_channels->mem_resource->start | |
34 | ||
35 | struct pci_dev; | |
36 | ||
37 | extern void pcibios_set_master(struct pci_dev *dev); | |
38 | ||
c9c3e457 | 39 | static inline void pcibios_penalize_isa_irq(int irq, int active) |
1da177e4 LT |
40 | { |
41 | /* We don't do dynamic PCI IRQ allocation */ | |
42 | } | |
43 | ||
44 | /* Dynamic DMA mapping stuff. | |
45 | * SuperH has everything mapped statically like x86. | |
46 | */ | |
47 | ||
48 | /* The PCI address space does equal the physical memory | |
49 | * address space. The networking and block device layers use | |
50 | * this boolean for bounce buffer decisions. | |
51 | */ | |
52 | #define PCI_DMA_BUS_IS_PHYS (1) | |
53 | ||
54 | #include <linux/types.h> | |
55 | #include <linux/slab.h> | |
56 | #include <asm/scatterlist.h> | |
57 | #include <linux/string.h> | |
58 | #include <asm/io.h> | |
59 | ||
60 | /* pci_unmap_{single,page} being a nop depends upon the | |
61 | * configuration. | |
62 | */ | |
63 | #ifdef CONFIG_SH_PCIDMA_NONCOHERENT | |
64 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ | |
65 | dma_addr_t ADDR_NAME; | |
66 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ | |
67 | __u32 LEN_NAME; | |
68 | #define pci_unmap_addr(PTR, ADDR_NAME) \ | |
69 | ((PTR)->ADDR_NAME) | |
70 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ | |
71 | (((PTR)->ADDR_NAME) = (VAL)) | |
72 | #define pci_unmap_len(PTR, LEN_NAME) \ | |
73 | ((PTR)->LEN_NAME) | |
74 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ | |
75 | (((PTR)->LEN_NAME) = (VAL)) | |
76 | #else | |
77 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) | |
78 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) | |
79 | #define pci_unmap_addr(PTR, ADDR_NAME) (0) | |
80 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) | |
81 | #define pci_unmap_len(PTR, LEN_NAME) (0) | |
82 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) | |
83 | #endif | |
84 | ||
85 | /* Not supporting more than 32-bit PCI bus addresses now, but | |
86 | * must satisfy references to this function. Change if needed. | |
87 | */ | |
88 | #define pci_dac_dma_supported(pci_dev, mask) (0) | |
89 | ||
90 | /* These macros should be used after a pci_map_sg call has been done | |
91 | * to get bus addresses of each of the SG entries and their lengths. | |
92 | * You should only work with the number of sg entries pci_map_sg | |
93 | * returns, or alternatively stop on the first sg_dma_len(sg) which | |
94 | * is 0. | |
95 | */ | |
96 | #define sg_dma_address(sg) (virt_to_bus((sg)->dma_address)) | |
97 | #define sg_dma_len(sg) ((sg)->length) | |
98 | ||
bb4a61b6 | 99 | #ifdef CONFIG_PCI |
e24c2d96 DM |
100 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, |
101 | enum pci_dma_burst_strategy *strat, | |
102 | unsigned long *strategy_parameter) | |
103 | { | |
104 | *strat = PCI_DMA_BURST_INFINITY; | |
105 | *strategy_parameter = ~0UL; | |
106 | } | |
bb4a61b6 | 107 | #endif |
e24c2d96 | 108 | |
1da177e4 LT |
109 | /* Board-specific fixup routines. */ |
110 | extern void pcibios_fixup(void); | |
111 | extern void pcibios_fixup_irqs(void); | |
112 | ||
113 | #ifdef CONFIG_PCI_AUTO | |
114 | extern int pciauto_assign_resources(int busno, struct pci_channel *hose); | |
115 | #endif | |
116 | ||
117 | static inline void pcibios_add_platform_entries(struct pci_dev *dev) | |
118 | { | |
119 | } | |
120 | ||
121 | #endif /* __KERNEL__ */ | |
122 | ||
123 | /* generic pci stuff */ | |
124 | #include <asm-generic/pci.h> | |
125 | ||
126 | /* generic DMA-mapping stuff */ | |
127 | #include <asm-generic/pci-dma-compat.h> | |
128 | ||
129 | #endif /* __ASM_SH_PCI_H */ | |
130 |