44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
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/* -*- mode: c; c-basic-offset: 8 -*- */
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/* Platform specific MCA defines */
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#ifndef _ASM_X86_MCA_H
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#define _ASM_X86_MCA_H
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/* Maximal number of MCA slots - actually, some machines have less, but
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* they all have sufficient number of POS registers to cover 8.
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*/
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#define MCA_MAX_SLOT_NR 8
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/* Most machines have only one MCA bus. The only multiple bus machines
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* I know have at most two */
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#define MAX_MCA_BUSSES 2
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#define MCA_PRIMARY_BUS 0
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#define MCA_SECONDARY_BUS 1
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/* Dummy slot numbers on primary MCA for integrated functions */
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#define MCA_INTEGSCSI (MCA_MAX_SLOT_NR)
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#define MCA_INTEGVIDEO (MCA_MAX_SLOT_NR+1)
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#define MCA_MOTHERBOARD (MCA_MAX_SLOT_NR+2)
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/* Dummy POS values for integrated functions */
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#define MCA_DUMMY_POS_START 0x10000
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#define MCA_INTEGSCSI_POS (MCA_DUMMY_POS_START+1)
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#define MCA_INTEGVIDEO_POS (MCA_DUMMY_POS_START+2)
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#define MCA_MOTHERBOARD_POS (MCA_DUMMY_POS_START+3)
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/* MCA registers */
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#define MCA_MOTHERBOARD_SETUP_REG 0x94
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#define MCA_ADAPTER_SETUP_REG 0x96
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#define MCA_POS_REG(n) (0x100+(n))
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#define MCA_ENABLED 0x01 /* POS 2, set if adapter enabled */
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/* Max number of adapters, including both slots and various integrated
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* things.
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*/
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#define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3)
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#endif /* _ASM_X86_MCA_H */
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