bha_isa.c revision 1.23
1/* $NetBSD: bha_isa.c,v 1.23 2002/10/02 02:09:16 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: bha_isa.c,v 1.23 2002/10/02 02:09:16 thorpej Exp $"); 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/device.h> 45 46#include <machine/bus.h> 47#include <machine/intr.h> 48 49#include <dev/scsipi/scsipi_all.h> 50#include <dev/scsipi/scsiconf.h> 51 52#include <dev/isa/isavar.h> 53#include <dev/isa/isadmavar.h> 54 55#include <dev/ic/bhareg.h> 56#include <dev/ic/bhavar.h> 57 58#define BHA_ISA_IOSIZE 4 59 60int bha_isa_probe __P((struct device *, struct cfdata *, void *)); 61void bha_isa_attach __P((struct device *, struct device *, void *)); 62 63CFATTACH_DECL(bha_isa, sizeof(struct bha_isa_softc), 64 bha_isa_probe, bha_isa_attach, NULL, NULL); 65 66/* 67 * Check the slots looking for a board we recognise 68 * If we find one, note it's address (slot) and call 69 * the actual probe routine to check it out. 70 */ 71int 72bha_isa_probe(parent, match, aux) 73 struct device *parent; 74 struct cfdata *match; 75 void *aux; 76{ 77 struct isa_attach_args *ia = aux; 78 bus_space_tag_t iot = ia->ia_iot; 79 bus_space_handle_t ioh; 80 struct bha_probe_data bpd; 81 int rv; 82 83 if (ia->ia_nio < 1) 84 return (0); 85 if (ia->ia_nirq < 1) 86 return (0); 87 if (ia->ia_ndrq < 1) 88 return (0); 89 90 if (ISA_DIRECT_CONFIG(ia)) 91 return (0); 92 93 /* Disallow wildcarded i/o address. */ 94 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 95 return (0); 96 97 if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh)) 98 return (0); 99 100 rv = bha_probe_inquiry(iot, ioh, &bpd); 101 102 bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE); 103 104 if (rv) { 105 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT && 106 ia->ia_irq[0].ir_irq != bpd.sc_irq) 107 return (0); 108 if (ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT && 109 ia->ia_drq[0].ir_drq != bpd.sc_drq) 110 return (0); 111 112 ia->ia_nio = 1; 113 ia->ia_io[0].ir_size = BHA_ISA_IOSIZE; 114 115 ia->ia_nirq = 1; 116 ia->ia_irq[0].ir_irq = bpd.sc_irq; 117 118 ia->ia_ndrq = 1; 119 ia->ia_drq[0].ir_drq = bpd.sc_drq; 120 121 ia->ia_niomem = 0; 122 } 123 return (rv); 124} 125 126/* 127 * Attach all the sub-devices we can find 128 */ 129void 130bha_isa_attach(parent, self, aux) 131 struct device *parent, *self; 132 void *aux; 133{ 134 struct isa_attach_args *ia = aux; 135 struct bha_softc *sc = (void *)self; 136 bus_space_tag_t iot = ia->ia_iot; 137 bus_space_handle_t ioh; 138 struct bha_probe_data bpd; 139 isa_chipset_tag_t ic = ia->ia_ic; 140 int error; 141 142 printf("\n"); 143 144 if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh)) { 145 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 146 return; 147 } 148 149 sc->sc_iot = iot; 150 sc->sc_ioh = ioh; 151 sc->sc_dmat = ia->ia_dmat; 152 if (!bha_probe_inquiry(iot, ioh, &bpd)) { 153 printf("%s: bha_isa_attach failed\n", sc->sc_dev.dv_xname); 154 return; 155 } 156 157 sc->sc_dmaflags = 0; 158 if (bpd.sc_drq != -1) { 159 if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) { 160 printf("%s: unable to cascade DRQ, error = %d\n", 161 sc->sc_dev.dv_xname, error); 162 return; 163 } 164 } else { 165 /* 166 * We have a VLB controller. If we're at least both 167 * hardware revision E and firmware revision 3.37, 168 * we can do 32-bit DMA (earlier revisions are buggy 169 * in this regard). 170 */ 171 (void) bha_info(sc); 172 if (strcmp(sc->sc_firmware, "3.37") < 0) 173 printf("%s: buggy VLB controller, disabling 32-bit DMA\n", 174 sc->sc_dev.dv_xname); 175 else 176 sc->sc_dmaflags = ISABUS_DMA_32BIT; 177 } 178 179 sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO, 180 bha_intr, sc); 181 if (sc->sc_ih == NULL) { 182 printf("%s: couldn't establish interrupt\n", 183 sc->sc_dev.dv_xname); 184 return; 185 } 186 187 bha_attach(sc); 188} 189