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/* $OpenBSD: bha_isa.c,v 1.4 2008/06/26 05:42:16 ray Exp $ */
/* $NetBSD: bha_isa.c,v 1.14 1998/08/15 10:10:51 mycroft Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/ic/bhareg.h>
#include <dev/ic/bhavar.h>
#include "aha.h"
#if NAHA > 0
int btports[8]; /* cannot be more */
int nbtports;
#endif
#define BHA_ISA_IOSIZE 4
int bha_isa_probe(struct device *, void *, void *);
void bha_isa_attach(struct device *, struct device *, void *);
struct cfattach bha_isa_ca = {
sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach
};
/*
* Check the slots looking for a board we recognise
* If we find one, note its address (slot) and call
* the actual probe routine to check it out.
*/
int
bha_isa_probe(parent, match, aux)
struct device *parent;
void *aux, *match;
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
struct bha_probe_data bpd;
#if NAHA > 0
struct bha_digit digit;
#endif
int rv;
/* Disallow wildcarded i/o address. */
if (ia->ia_iobase == IOBASEUNK)
return (0);
if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh))
return (0);
rv = bha_find(iot, ioh, &bpd);
#if NAHA > 0
if (rv) {
/* Adaptec 1542 cards do not support this */
digit.reply.digit = '@';
digit.cmd.opcode = BHA_INQUIRE_REVISION_3;
bha_cmd(iot, ioh, NULL, sizeof(digit.cmd), (u_char *)&digit.cmd,
sizeof(digit.reply), (u_char *)&digit.reply);
if (digit.reply.digit == '@')
return 1;
}
#endif
bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE);
if (rv) {
if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq)
return (0);
if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq)
return (0);
ia->ia_irq = bpd.sc_irq;
ia->ia_drq = bpd.sc_drq;
ia->ia_msize = 0;
ia->ia_iosize = BHA_ISA_IOSIZE;
}
return (rv);
}
/*
* Attach all the sub-devices we can find
*/
void
bha_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct isa_attach_args *ia = aux;
struct bha_softc *sc = (void *)self;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
struct bha_probe_data bpd;
isa_chipset_tag_t ic = ia->ia_ic;
#ifndef __OpenBSD__
int error;
#endif
printf("\n");
if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->sc_dmat = ia->ia_dmat;
if (!bha_find(iot, ioh, &bpd)) {
printf("%s: bha_find failed\n", sc->sc_dev.dv_xname);
return;
}
sc->sc_dmaflags = 0;
if (bpd.sc_drq != DRQUNK) {
#ifdef __OpenBSD__
isa_dmacascade(ic, bpd.sc_drq);
#else
if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) {
printf("%s: unable to cascade DRQ, error = %d\n",
sc->sc_dev.dv_xname, error);
return;
}
#endif
} else {
/*
* We have a VLB controller. If we're at least both
* hardware revision E and firmware revision 3.37,
* we can do 32-bit DMA (earlier revisions are buggy
* in this regard).
*/
bha_inquire_setup_information(sc);
if (strcmp(sc->sc_firmware, "3.37") < 0)
printf("%s: buggy VLB controller, disabling 32-bit DMA\n",
sc->sc_dev.dv_xname);
else
sc->sc_dmaflags = ISABUS_DMA_32BIT;
}
sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO,
bha_intr, sc, sc->sc_dev.dv_xname);
if (sc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt\n",
sc->sc_dev.dv_xname);
return;
}
bha_attach(sc, &bpd);
#if NAHA > 0
/* XXXX To avoid conflicting with the aha1542 probe */
btports[nbtports++] = ia->ia_iobase;
#endif
}
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