bha_isa.c revision 1.19
1 /* $NetBSD: bha_isa.c,v 1.19 2001/11/13 08:01:10 lukem 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 1.19 2001/11/13 08:01:10 lukem Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/scsipi/scsipi_all.h> 51 #include <dev/scsipi/scsiconf.h> 52 53 #include <dev/isa/isavar.h> 54 #include <dev/isa/isadmavar.h> 55 56 #include <dev/ic/bhareg.h> 57 #include <dev/ic/bhavar.h> 58 59 #define BHA_ISA_IOSIZE 4 60 61 int bha_isa_probe __P((struct device *, struct cfdata *, void *)); 62 void bha_isa_attach __P((struct device *, struct device *, void *)); 63 64 struct cfattach bha_isa_ca = { 65 sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach 66 }; 67 68 /* 69 * Check the slots looking for a board we recognise 70 * If we find one, note it's address (slot) and call 71 * the actual probe routine to check it out. 72 */ 73 int 74 bha_isa_probe(parent, match, aux) 75 struct device *parent; 76 struct cfdata *match; 77 void *aux; 78 { 79 struct isa_attach_args *ia = aux; 80 bus_space_tag_t iot = ia->ia_iot; 81 bus_space_handle_t ioh; 82 struct bha_probe_data bpd; 83 int rv; 84 85 /* Disallow wildcarded i/o address. */ 86 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 87 return (0); 88 89 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) 90 return (0); 91 92 rv = bha_probe_inquiry(iot, ioh, &bpd); 93 94 bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE); 95 96 if (rv) { 97 if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq) 98 return (0); 99 if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq) 100 return (0); 101 ia->ia_irq = bpd.sc_irq; 102 ia->ia_drq = bpd.sc_drq; 103 ia->ia_msize = 0; 104 ia->ia_iosize = BHA_ISA_IOSIZE; 105 } 106 return (rv); 107 } 108 109 /* 110 * Attach all the sub-devices we can find 111 */ 112 void 113 bha_isa_attach(parent, self, aux) 114 struct device *parent, *self; 115 void *aux; 116 { 117 struct isa_attach_args *ia = aux; 118 struct bha_softc *sc = (void *)self; 119 bus_space_tag_t iot = ia->ia_iot; 120 bus_space_handle_t ioh; 121 struct bha_probe_data bpd; 122 isa_chipset_tag_t ic = ia->ia_ic; 123 int error; 124 125 printf("\n"); 126 127 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) { 128 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 129 return; 130 } 131 132 sc->sc_iot = iot; 133 sc->sc_ioh = ioh; 134 sc->sc_dmat = ia->ia_dmat; 135 if (!bha_probe_inquiry(iot, ioh, &bpd)) { 136 printf("%s: bha_isa_attach failed\n", sc->sc_dev.dv_xname); 137 return; 138 } 139 140 sc->sc_dmaflags = 0; 141 if (bpd.sc_drq != -1) { 142 if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) { 143 printf("%s: unable to cascade DRQ, error = %d\n", 144 sc->sc_dev.dv_xname, error); 145 return; 146 } 147 } else { 148 /* 149 * We have a VLB controller. If we're at least both 150 * hardware revision E and firmware revision 3.37, 151 * we can do 32-bit DMA (earlier revisions are buggy 152 * in this regard). 153 */ 154 (void) bha_info(sc); 155 if (strcmp(sc->sc_firmware, "3.37") < 0) 156 printf("%s: buggy VLB controller, disabling 32-bit DMA\n", 157 sc->sc_dev.dv_xname); 158 else 159 sc->sc_dmaflags = ISABUS_DMA_32BIT; 160 } 161 162 sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO, 163 bha_intr, sc); 164 if (sc->sc_ih == NULL) { 165 printf("%s: couldn't establish interrupt\n", 166 sc->sc_dev.dv_xname); 167 return; 168 } 169 170 bha_attach(sc); 171 } 172
Indexes created Tue Sep 30 17:09:57 GMT 2025