diff options
Diffstat (limited to 'arch/blackfin/include')
-rw-r--r-- | arch/blackfin/include/asm/pci.h | 130 |
1 files changed, 2 insertions, 128 deletions
diff --git a/arch/blackfin/include/asm/pci.h b/arch/blackfin/include/asm/pci.h index 61277358c865..99cae2e3bac7 100644 --- a/arch/blackfin/include/asm/pci.h +++ b/arch/blackfin/include/asm/pci.h | |||
@@ -4,145 +4,19 @@ | |||
4 | #define _ASM_BFIN_PCI_H | 4 | #define _ASM_BFIN_PCI_H |
5 | 5 | ||
6 | #include <asm/scatterlist.h> | 6 | #include <asm/scatterlist.h> |
7 | #include <asm-generic/pci-dma-compat.h> | ||
8 | #include <asm-generic/pci.h> | ||
7 | 9 | ||
8 | /* | ||
9 | * | ||
10 | * Written by Wout Klaren. | ||
11 | */ | ||
12 | |||
13 | /* Added by Chang Junxiao */ | ||
14 | #define PCIBIOS_MIN_IO 0x00001000 | 10 | #define PCIBIOS_MIN_IO 0x00001000 |
15 | #define PCIBIOS_MIN_MEM 0x10000000 | 11 | #define PCIBIOS_MIN_MEM 0x10000000 |
16 | 12 | ||
17 | #define PCI_DMA_BUS_IS_PHYS (1) | ||
18 | struct pci_ops; | ||
19 | |||
20 | /* | ||
21 | * Structure with hardware dependent information and functions of the | ||
22 | * PCI bus. | ||
23 | */ | ||
24 | struct pci_bus_info { | ||
25 | |||
26 | /* | ||
27 | * Resources of the PCI bus. | ||
28 | */ | ||
29 | struct resource mem_space; | ||
30 | struct resource io_space; | ||
31 | |||
32 | /* | ||
33 | * System dependent functions. | ||
34 | */ | ||
35 | struct pci_ops *bfin_pci_ops; | ||
36 | void (*fixup) (int pci_modify); | ||
37 | void (*conf_device) (unsigned char bus, unsigned char device_fn); | ||
38 | }; | ||
39 | |||
40 | #define pcibios_assign_all_busses() 0 | ||
41 | static inline void pcibios_set_master(struct pci_dev *dev) | 13 | static inline void pcibios_set_master(struct pci_dev *dev) |
42 | { | 14 | { |
43 | |||
44 | /* No special bus mastering setup handling */ | 15 | /* No special bus mastering setup handling */ |
45 | } | 16 | } |
46 | static inline void pcibios_penalize_isa_irq(int irq) | 17 | static inline void pcibios_penalize_isa_irq(int irq) |
47 | { | 18 | { |
48 | |||
49 | /* We don't do dynamic PCI IRQ allocation */ | 19 | /* We don't do dynamic PCI IRQ allocation */ |
50 | } | 20 | } |
51 | static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, | ||
52 | size_t size, int direction) | ||
53 | { | ||
54 | if (direction == PCI_DMA_NONE) | ||
55 | BUG(); | ||
56 | |||
57 | /* return virt_to_bus(ptr); */ | ||
58 | return (dma_addr_t) ptr; | ||
59 | } | ||
60 | |||
61 | /* Unmap a single streaming mode DMA translation. The dma_addr and size | ||
62 | * must match what was provided for in a previous pci_map_single call. All | ||
63 | * other usages are undefined. | ||
64 | * | ||
65 | * After this call, reads by the cpu to the buffer are guarenteed to see | ||
66 | * whatever the device wrote there. | ||
67 | */ | ||
68 | static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, | ||
69 | size_t size, int direction) | ||
70 | { | ||
71 | if (direction == PCI_DMA_NONE) | ||
72 | BUG(); | ||
73 | |||
74 | /* Nothing to do */ | ||
75 | } | ||
76 | |||
77 | /* Map a set of buffers described by scatterlist in streaming | ||
78 | * mode for DMA. This is the scather-gather version of the | ||
79 | * above pci_map_single interface. Here the scatter gather list | ||
80 | * elements are each tagged with the appropriate dma address | ||
81 | * and length. They are obtained via sg_dma_{address,length}(SG). | ||
82 | * | ||
83 | * NOTE: An implementation may be able to use a smaller number of | ||
84 | * DMA address/length pairs than there are SG table elements. | ||
85 | * (for example via virtual mapping capabilities) | ||
86 | * The routine returns the number of addr/length pairs actually | ||
87 | * used, at most nents. | ||
88 | * | ||
89 | * Device ownership issues as mentioned above for pci_map_single are | ||
90 | * the same here. | ||
91 | */ | ||
92 | static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, | ||
93 | int nents, int direction) | ||
94 | { | ||
95 | if (direction == PCI_DMA_NONE) | ||
96 | BUG(); | ||
97 | return nents; | ||
98 | } | ||
99 | |||
100 | /* Unmap a set of streaming mode DMA translations. | ||
101 | * Again, cpu read rules concerning calls here are the same as for | ||
102 | * pci_unmap_single() above. | ||
103 | */ | ||
104 | static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, | ||
105 | int nents, int direction) | ||
106 | { | ||
107 | if (direction == PCI_DMA_NONE) | ||
108 | BUG(); | ||
109 | |||
110 | /* Nothing to do */ | ||
111 | } | ||
112 | |||
113 | /* Make physical memory consistent for a single | ||
114 | * streaming mode DMA translation after a transfer. | ||
115 | * | ||
116 | * If you perform a pci_map_single() but wish to interrogate the | ||
117 | * buffer using the cpu, yet do not wish to teardown the PCI dma | ||
118 | * mapping, you must call this function before doing so. At the | ||
119 | * next point you give the PCI dma address back to the card, the | ||
120 | * device again owns the buffer. | ||
121 | */ | ||
122 | static inline void pci_dma_sync_single(struct pci_dev *hwdev, | ||
123 | dma_addr_t dma_handle, size_t size, | ||
124 | int direction) | ||
125 | { | ||
126 | if (direction == PCI_DMA_NONE) | ||
127 | BUG(); | ||
128 | |||
129 | /* Nothing to do */ | ||
130 | } | ||
131 | |||
132 | /* Make physical memory consistent for a set of streaming | ||
133 | * mode DMA translations after a transfer. | ||
134 | * | ||
135 | * The same as pci_dma_sync_single but for a scatter-gather list, | ||
136 | * same rules and usage. | ||
137 | */ | ||
138 | static inline void pci_dma_sync_sg(struct pci_dev *hwdev, | ||
139 | struct scatterlist *sg, int nelems, | ||
140 | int direction) | ||
141 | { | ||
142 | if (direction == PCI_DMA_NONE) | ||
143 | BUG(); | ||
144 | |||
145 | /* Nothing to do */ | ||
146 | } | ||
147 | 21 | ||
148 | #endif /* _ASM_BFIN_PCI_H */ | 22 | #endif /* _ASM_BFIN_PCI_H */ |