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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* -*- mode: c; c-basic-offset: 8 -*- */ |
| 2 | |||
| 3 | /* Platform specific MCA defines */ |
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| 4 | #ifndef _ASM_MCA_H |
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| 5 | #define _ASM_MCA_H |
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| 6 | |||
| 7 | /* Maximal number of MCA slots - actually, some machines have less, but |
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| 8 | * they all have sufficient number of POS registers to cover 8. |
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| 9 | */ |
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| 10 | #define MCA_MAX_SLOT_NR 8 |
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| 11 | |||
| 12 | /* Most machines have only one MCA bus. The only multiple bus machines |
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| 13 | * I know have at most two */ |
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| 14 | #define MAX_MCA_BUSSES 2 |
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| 15 | |||
| 16 | #define MCA_PRIMARY_BUS 0 |
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| 17 | #define MCA_SECONDARY_BUS 1 |
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| 18 | |||
| 19 | /* Dummy slot numbers on primary MCA for integrated functions */ |
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| 20 | #define MCA_INTEGSCSI (MCA_MAX_SLOT_NR) |
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| 21 | #define MCA_INTEGVIDEO (MCA_MAX_SLOT_NR+1) |
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| 22 | #define MCA_MOTHERBOARD (MCA_MAX_SLOT_NR+2) |
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| 23 | |||
| 24 | /* Dummy POS values for integrated functions */ |
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| 25 | #define MCA_DUMMY_POS_START 0x10000 |
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| 26 | #define MCA_INTEGSCSI_POS (MCA_DUMMY_POS_START+1) |
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| 27 | #define MCA_INTEGVIDEO_POS (MCA_DUMMY_POS_START+2) |
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| 28 | #define MCA_MOTHERBOARD_POS (MCA_DUMMY_POS_START+3) |
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| 29 | |||
| 30 | /* MCA registers */ |
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| 31 | |||
| 32 | #define MCA_MOTHERBOARD_SETUP_REG 0x94 |
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| 33 | #define MCA_ADAPTER_SETUP_REG 0x96 |
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| 34 | #define MCA_POS_REG(n) (0x100+(n)) |
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| 35 | |||
| 36 | #define MCA_ENABLED 0x01 /* POS 2, set if adapter enabled */ |
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| 37 | |||
| 38 | /* Max number of adapters, including both slots and various integrated |
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| 39 | * things. |
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| 40 | */ |
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| 41 | #define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3) |
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| 42 | |||
| 43 | /* lock to protect access to the MCA registers */ |
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| 44 | extern spinlock_t mca_lock; |
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| 45 | |||
| 46 | #endif |