1 /* -*- mode: c; c-basic-offset: 8 -*- */
3 /* Platform specific MCA defines */
7 /* Maximal number of MCA slots - actually, some machines have less, but
8 * they all have sufficient number of POS registers to cover 8.
10 #define MCA_MAX_SLOT_NR 8
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
16 #define MCA_PRIMARY_BUS 0
17 #define MCA_SECONDARY_BUS 1
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)
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)
32 #define MCA_MOTHERBOARD_SETUP_REG 0x94
33 #define MCA_ADAPTER_SETUP_REG 0x96
34 #define MCA_POS_REG(n) (0x100+(n))
36 #define MCA_ENABLED 0x01 /* POS 2, set if adapter enabled */
38 /* Max number of adapters, including both slots and various integrated
41 #define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3)
43 #endif /* ASM_X86__MCA_H */