132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
/* $NetBSD: bha_isa.c,v 1.6 1997/03/28 23:47:13 mycroft Exp $ */
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/*
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* Copyright (c) 1994, 1996, 1997 Charles M. Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.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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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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struct bha_probe_data bpd;
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int rv;
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if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh))
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return (0);
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rv = bha_find(iot, ioh, &bpd);
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bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE);
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if (rv) {
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if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq)
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return (0);
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if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq)
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return (0);
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ia->ia_irq = bpd.sc_irq;
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ia->ia_drq = bpd.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_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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struct bha_probe_data bpd;
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isa_chipset_tag_t ic = ia->ia_ic;
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printf("\n");
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if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh))
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panic("bha_isa_attach: bus_space_map failed");
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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if (!bha_find(iot, ioh, &bpd))
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panic("bha_isa_attach: bha_find failed");
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if (bpd.sc_drq != -1)
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isa_dmacascade(bpd.sc_drq);
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sc->sc_ih = isa_intr_establish(ic, bpd.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, &bpd);
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}
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