| 0,0 → 1,50 |
|---|
| #include<menuet/os.h> |
| |
| #define PCI_FN 62 |
| |
| void get_pci_version(__u8 * major,__u8 * minor) |
| { |
| int r; |
| __asm__ __volatile__("int $0x40":"=a"(r):"0"(PCI_FN),"b"(0)); |
| *minor=r&0xFF; |
| *major=(r>>8)&0xFF; |
| } |
| |
| void pci_get_last_bus(__u8 * last_bus) |
| { |
| __asm__ __volatile__("int $0x40":"=a"(*last_bus):"0"(PCI_FN),"b"(1)); |
| } |
| |
| void get_pci_access_mechanism(__u8 * mechanism) |
| { |
| __asm__ __volatile__("int $0x40":"=a"(*mechanism):"0"(PCI_FN),"b"(2)); |
| } |
| |
| #define read_config(x,c,bits) \ |
| __u##bits pci_read_config_##x (__u8 bus,__u8 dev,__u8 fn,__u8 reg) \ |
| { \ |
| __u##bits __ret; \ |
| __u16 cx; \ |
| __u16 bx; \ |
| cx=(((fn&7)|(((dev)&~7)<<3))<<8)|reg; \ |
| bx=(bus<<8)|(c); \ |
| __asm__ __volatile__("int $0x40":"=a"(__ret):"0"(PCI_FN),"b"(bx),"c"(cx)); \ |
| return __ret; \ |
| } |
| |
| #define write_config(x,c,bits) \ |
| void pci_write_config_##x (__u8 bus,__u8 dev,__u8 fn,__u8 reg,__u##bits val) \ |
| { \ |
| __u16 cx,bx; \ |
| cx=(((fn&7)|(((dev)&~7)<<3))<<8)|reg; \ |
| bx=(bus<<8)|(c); \ |
| __asm__ __volatile__("int $0x40"::"a"(PCI_FN),"b"(bx),"c"(cx),"d"(val)); \ |
| } |
| |
| #define rw_config(x,c,bits) \ |
| read_config(x,4+c,bits) \ |
| write_config(x,7+c,bits) |
| |
| rw_config(byte,0,8) |
| rw_config(word,1,16) |
| rw_config(dword,2,32) |