Annotation of sys/dev/isa/bha_isa.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bha_isa.c,v 1.3 2007/04/10 17:47:55 miod Exp $ */
! 2: /* $NetBSD: bha_isa.c,v 1.14 1998/08/15 10:10:51 mycroft Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Charles M. Hannum.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #include <sys/types.h>
! 41: #include <sys/param.h>
! 42: #include <sys/systm.h>
! 43: #include <sys/device.h>
! 44:
! 45: #include <machine/bus.h>
! 46: #include <machine/intr.h>
! 47:
! 48: #include <scsi/scsi_all.h>
! 49: #include <scsi/scsiconf.h>
! 50:
! 51: #include <dev/isa/isavar.h>
! 52: #include <dev/isa/isadmavar.h>
! 53:
! 54: #include <dev/ic/bhareg.h>
! 55: #include <dev/ic/bhavar.h>
! 56:
! 57: #include "aha.h"
! 58: #if NAHA > 0
! 59: int btports[8]; /* cannot be more */
! 60: int nbtports;
! 61: #endif
! 62:
! 63: #define BHA_ISA_IOSIZE 4
! 64:
! 65: int bha_isa_probe(struct device *, void *, void *);
! 66: void bha_isa_attach(struct device *, struct device *, void *);
! 67:
! 68: struct cfattach bha_isa_ca = {
! 69: sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach
! 70: };
! 71:
! 72: /*
! 73: * Check the slots looking for a board we recognise
! 74: * If we find one, note its address (slot) and call
! 75: * the actual probe routine to check it out.
! 76: */
! 77: int
! 78: bha_isa_probe(parent, match, aux)
! 79: struct device *parent;
! 80: void *aux, *match;
! 81: {
! 82: struct isa_attach_args *ia = aux;
! 83: bus_space_tag_t iot = ia->ia_iot;
! 84: bus_space_handle_t ioh;
! 85: struct bha_probe_data bpd;
! 86: #if NAHA > 0
! 87: struct bha_digit digit;
! 88: #endif
! 89: int rv;
! 90:
! 91: /* Disallow wildcarded i/o address. */
! 92: if (ia->ia_iobase == IOBASEUNK)
! 93: return (0);
! 94:
! 95: if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh))
! 96: return (0);
! 97:
! 98: rv = bha_find(iot, ioh, &bpd);
! 99:
! 100: #if NAHA > 0
! 101: if (rv) {
! 102: /* Adaptec 1542 cards do not support this */
! 103: digit.reply.digit = '@';
! 104: digit.cmd.opcode = BHA_INQUIRE_REVISION_3;
! 105: bha_cmd(iot, ioh, NULL, sizeof(digit.cmd), (u_char *)&digit.cmd,
! 106: sizeof(digit.reply), (u_char *)&digit.reply);
! 107: if (digit.reply.digit == '@')
! 108: return 1;
! 109: }
! 110: #endif
! 111:
! 112: bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE);
! 113:
! 114: if (rv) {
! 115: if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq)
! 116: return (0);
! 117: if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq)
! 118: return (0);
! 119: ia->ia_irq = bpd.sc_irq;
! 120: ia->ia_drq = bpd.sc_drq;
! 121: ia->ia_msize = 0;
! 122: ia->ia_iosize = BHA_ISA_IOSIZE;
! 123: }
! 124: return (rv);
! 125: }
! 126:
! 127: /*
! 128: * Attach all the sub-devices we can find
! 129: */
! 130: void
! 131: bha_isa_attach(parent, self, aux)
! 132: struct device *parent, *self;
! 133: void *aux;
! 134: {
! 135: struct isa_attach_args *ia = aux;
! 136: struct bha_softc *sc = (void *)self;
! 137: bus_space_tag_t iot = ia->ia_iot;
! 138: bus_space_handle_t ioh;
! 139: struct bha_probe_data bpd;
! 140: isa_chipset_tag_t ic = ia->ia_ic;
! 141: #ifndef __OpenBSD__
! 142: int error;
! 143: #endif
! 144:
! 145: printf("\n");
! 146:
! 147: if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
! 148: printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
! 149: return;
! 150: }
! 151:
! 152: sc->sc_iot = iot;
! 153: sc->sc_ioh = ioh;
! 154: sc->sc_dmat = ia->ia_dmat;
! 155: if (!bha_find(iot, ioh, &bpd)) {
! 156: printf("%s: bha_find failed\n", sc->sc_dev.dv_xname);
! 157: return;
! 158: }
! 159:
! 160: sc->sc_dmaflags = 0;
! 161: if (bpd.sc_drq != DRQUNK) {
! 162: #ifdef __OpenBSD__
! 163: isa_dmacascade(ic, bpd.sc_drq);
! 164: #else
! 165: if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) {
! 166: printf("%s: unable to cascade DRQ, error = %d\n",
! 167: sc->sc_dev.dv_xname, error);
! 168: return;
! 169: }
! 170: #endif
! 171: } else {
! 172: /*
! 173: * We have a VLB controller. If we're at least both
! 174: * hardware revision E and firmware revision 3.37,
! 175: * we can do 32-bit DMA (earlier revisions are buggy
! 176: * in this regard).
! 177: */
! 178: bha_inquire_setup_information(sc);
! 179: if (strcmp(sc->sc_firmware, "3.37") < 0)
! 180: printf("%s: buggy VLB controller, disabling 32-bit DMA\n",
! 181: sc->sc_dev.dv_xname);
! 182: else
! 183: sc->sc_dmaflags = ISABUS_DMA_32BIT;
! 184: }
! 185:
! 186: sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO,
! 187: bha_intr, sc, sc->sc_dev.dv_xname);
! 188: if (sc->sc_ih == NULL) {
! 189: printf("%s: couldn't establish interrupt\n",
! 190: sc->sc_dev.dv_xname);
! 191: return;
! 192: }
! 193:
! 194: bha_attach(sc, &bpd);
! 195:
! 196: #if NAHA > 0
! 197: /* XXXX To avoid conflicting with the aha1542 probe */
! 198: btports[nbtports++] = ia->ia_iobase;
! 199: #endif
! 200: }
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