| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8 -*- */ |
| 2 | |
| 3 | /* Platform specific MCA defines */ |
| 4 | #ifndef _ASM_MCA_H |
| 5 | #define _ASM_MCA_H |
| 6 | |
| 7 | /* Maximal number of MCA slots - actually, some machines have less, but |
| 8 | * they all have sufficient number of POS registers to cover 8. |
| 9 | */ |
| 10 | #define MCA_MAX_SLOT_NR 8 |
| 11 | |
| 12 | /* Most machines have only one MCA bus. The only multiple bus machines |
| 13 | * I know have at most two */ |
| 14 | #define MAX_MCA_BUSSES 2 |
| 15 | |
| 16 | #define MCA_PRIMARY_BUS 0 |
| 17 | #define MCA_SECONDARY_BUS 1 |
| 18 | |
| 19 | /* Dummy slot numbers on primary MCA for integrated functions */ |
| 20 | #define MCA_INTEGSCSI (MCA_MAX_SLOT_NR) |
| 21 | #define MCA_INTEGVIDEO (MCA_MAX_SLOT_NR+1) |
| 22 | #define MCA_MOTHERBOARD (MCA_MAX_SLOT_NR+2) |
| 23 | |
| 24 | /* Dummy POS values for integrated functions */ |
| 25 | #define MCA_DUMMY_POS_START 0x10000 |
| 26 | #define MCA_INTEGSCSI_POS (MCA_DUMMY_POS_START+1) |
| 27 | #define MCA_INTEGVIDEO_POS (MCA_DUMMY_POS_START+2) |
| 28 | #define MCA_MOTHERBOARD_POS (MCA_DUMMY_POS_START+3) |
| 29 | |
| 30 | /* MCA registers */ |
| 31 | |
| 32 | #define MCA_MOTHERBOARD_SETUP_REG 0x94 |
| 33 | #define MCA_ADAPTER_SETUP_REG 0x96 |
| 34 | #define MCA_POS_REG(n) (0x100+(n)) |
| 35 | |
| 36 | #define MCA_ENABLED 0x01 /* POS 2, set if adapter enabled */ |
| 37 | |
| 38 | /* Max number of adapters, including both slots and various integrated |
| 39 | * things. |
| 40 | */ |
| 41 | #define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3) |
| 42 | |
| 43 | #endif |