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/* -*- mode: c; c-basic-offset: 8 -*- */
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/* Platform specific MCA defines */
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#ifndef _ASM_MCA_H
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#define _ASM_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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/* lock to protect access to the MCA registers */
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extern spinlock_t mca_lock;
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#endif