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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | #include |
| 2 | |||
| 3 | #define PCI_FN 62 |
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| 4 | |||
| 5 | void get_pci_version(__u8 * major,__u8 * minor) |
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| 6 | { |
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| 7 | int r; |
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| 8 | __asm__ __volatile__("int $0x40":"=a"(r):"0"(PCI_FN),"b"(0)); |
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| 9 | *minor=r&0xFF; |
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| 10 | *major=(r>>8)&0xFF; |
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| 11 | } |
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| 12 | |||
| 13 | void pci_get_last_bus(__u8 * last_bus) |
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| 14 | { |
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| 15 | __asm__ __volatile__("int $0x40":"=a"(*last_bus):"0"(PCI_FN),"b"(1)); |
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| 16 | } |
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| 17 | |||
| 18 | void get_pci_access_mechanism(__u8 * mechanism) |
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| 19 | { |
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| 20 | __asm__ __volatile__("int $0x40":"=a"(*mechanism):"0"(PCI_FN),"b"(2)); |
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| 21 | } |
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| 22 | |||
| 23 | #define read_config(x,c,bits) \ |
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| 24 | __u##bits pci_read_config_##x (__u8 bus,__u8 dev,__u8 fn,__u8 reg) \ |
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| 25 | { \ |
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| 26 | __u##bits __ret; \ |
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| 27 | __u16 cx; \ |
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| 28 | __u16 bx; \ |
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| 29 | cx=(((fn&7)|(((dev)&~7)<<3))<<8)|reg; \ |
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| 30 | bx=(bus<<8)|(c); \ |
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| 31 | __asm__ __volatile__("int $0x40":"=a"(__ret):"0"(PCI_FN),"b"(bx),"c"(cx)); \ |
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| 32 | return __ret; \ |
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| 33 | } |
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| 34 | |||
| 35 | #define write_config(x,c,bits) \ |
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| 36 | void pci_write_config_##x (__u8 bus,__u8 dev,__u8 fn,__u8 reg,__u##bits val) \ |
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| 37 | { \ |
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| 38 | __u16 cx,bx; \ |
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| 39 | cx=(((fn&7)|(((dev)&~7)<<3))<<8)|reg; \ |
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| 40 | bx=(bus<<8)|(c); \ |
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| 41 | __asm__ __volatile__("int $0x40"::"a"(PCI_FN),"b"(bx),"c"(cx),"d"(val)); \ |
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| 42 | } |
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| 43 | |||
| 44 | #define rw_config(x,c,bits) \ |
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| 45 | read_config(x,4+c,bits) \ |
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| 46 | write_config(x,7+c,bits) |
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| 47 | |||
| 48 | rw_config(byte,0,8) |
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| 49 | rw_config(word,1,16) |
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| 50 | rw_config(dword,2,32) |