49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
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/*
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* Mail box defs etc.
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* these could be bigger but we need the bha_softc to fit on a single page..
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*/
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#define BHA_MBX_SIZE 32 /* mail box size (MAX 255 MBxs) */
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/* don't need that many really */
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#define BHA_CCB_MAX 32 /* store up to 32 CCBs at one time */
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#define CCB_HASH_SIZE 32 /* hash table size for phystokv */
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#define CCB_HASH_SHIFT 9
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#define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
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#define bha_nextmbx(wmb, mbx, mbio) \
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if ((wmb) == &(mbx)->mbio[BHA_MBX_SIZE - 1]) \
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(wmb) = &(mbx)->mbio[0]; \
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else \
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(wmb)++;
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struct bha_mbx {
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struct bha_mbx_out mbo[BHA_MBX_SIZE];
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struct bha_mbx_in mbi[BHA_MBX_SIZE];
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struct bha_mbx_out *cmbo; /* Collection Mail Box out */
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struct bha_mbx_out *tmbo; /* Target Mail Box out */
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struct bha_mbx_in *tmbi; /* Target Mail Box in */
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};
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struct bha_softc {
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struct device sc_dev;
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bus_chipset_tag_t sc_bc;
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bus_io_handle_t sc_ioh;
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int sc_irq, sc_drq;
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void *sc_ih;
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char sc_model[7],
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sc_firmware[6];
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struct bha_mbx sc_mbx; /* all our mailboxes */
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#define wmbx (&sc->sc_mbx)
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struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
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TAILQ_HEAD(, bha_ccb) sc_free_ccb, sc_waiting_ccb;
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int sc_numccbs, sc_mbofull;
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int sc_scsi_dev; /* adapters scsi id */
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struct scsi_link sc_link; /* prototype for devs */
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};
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int bha_find __P((bus_chipset_tag_t, bus_io_handle_t, struct bha_softc *));
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void bha_attach __P((struct bha_softc *));
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int bha_intr __P((void *));
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