100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/bhareg.h>
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#include <dev/ic/bhavar.h>
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#define BHA_ISA_IOSIZE 4
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int bha_isa_probe __P((struct device *, void *, void *));
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void bha_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach bha_isa_ca = {
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sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach
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};
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/*
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* Check the slots looking for a board we recognise
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* If we find one, note it's address (slot) and call
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* the actual probe routine to check it out.
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*/
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int
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bha_isa_probe(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct isa_attach_args *ia = aux;
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struct bha_softc sc;
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bus_chipset_tag_t bc = ia->ia_bc;
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bus_io_handle_t ioh;
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isa_chipset_tag_t ic = ia->ia_ic;
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int rv;
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if (bus_io_map(bc, ia->ia_iobase, BHA_ISA_IOSIZE, &ioh))
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return (0);
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rv = bha_find(bc, ioh, &sc);
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bus_io_unmap(bc, ioh, BHA_ISA_IOSIZE);
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if (rv) {
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if (ia->ia_irq != -1 && ia->ia_irq != sc.sc_irq)
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return (0);
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if (ia->ia_drq != -1 && ia->ia_drq != sc.sc_drq)
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return (0);
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ia->ia_irq = sc.sc_irq;
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ia->ia_drq = sc.sc_drq;
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ia->ia_msize = 0;
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ia->ia_iosize = BHA_ISA_IOSIZE;
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}
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return (rv);
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}
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/*
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* Attach all the sub-devices we can find
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*/
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void
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bha_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct isa_attach_args *ia = aux;
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struct bha_softc *sc = (void *)self;
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bus_chipset_tag_t bc = ia->ia_bc;
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bus_io_handle_t ioh;
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isa_chipset_tag_t ic = ia->ia_ic;
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printf("\n");
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if (bus_io_map(bc, ia->ia_iobase, BHA_ISA_IOSIZE, &ioh))
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panic("bha_attach: bus_io_map failed!");
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sc->sc_bc = bc;
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sc->sc_ioh = ioh;
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if (!bha_find(bc, ioh, sc))
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panic("bha_attach: bha_find failed!");
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if (sc->sc_drq != -1)
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isa_dmacascade(sc->sc_drq);
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sc->sc_ih = isa_intr_establish(ic, sc->sc_irq, IST_EDGE, IPL_BIO,
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bha_intr, sc);
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if (sc->sc_ih == NULL) {
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printf("%s: couldn't establish interrupt\n",
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sc->sc_dev.dv_xname);
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return;
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}
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bha_attach(sc);
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}
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