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1da177e4 LT |
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 |