1 /* $NetBSD: bha_isa.c,v 1.20 2001/11/15 09:48:09 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 1.20 2001/11/15 09:48:09 lukem 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 60 int bha_isa_probe __P((struct device *, struct cfdata *, void *)); 61 void bha_isa_attach __P((struct device *, struct device *, void *)); 62 63 struct cfattach bha_isa_ca = { 64 sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach 65 }; 66 67 /* 68 * Check the slots looking for a board we recognise 69 * If we find one, note it's address (slot) and call 70 * the actual probe routine to check it out. 71 */ 72 int 73 bha_isa_probe(parent, match, aux) 74 struct device *parent; 75 struct cfdata *match; 76 void *aux; 77 { 78 struct isa_attach_args *ia = aux; 79 bus_space_tag_t iot = ia->ia_iot; 80 bus_space_handle_t ioh; 81 struct bha_probe_data bpd; 82 int rv; 83 84 /* Disallow wildcarded i/o address. */ 85 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 86 return (0); 87 88 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) 89 return (0); 90 91 rv = bha_probe_inquiry(iot, ioh, &bpd); 92 93 bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE); 94 95 if (rv) { 96 if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq) 97 return (0); 98 if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq) 99 return (0); 100 ia->ia_irq = bpd.sc_irq; 101 ia->ia_drq = bpd.sc_drq; 102 ia->ia_msize = 0; 103 ia->ia_iosize = BHA_ISA_IOSIZE; 104 } 105 return (rv); 106 } 107 108 /* 109 * Attach all the sub-devices we can find 110 */ 111 void 112 bha_isa_attach(parent, self, aux) 113 struct device *parent, *self; 114 void *aux; 115 { 116 struct isa_attach_args *ia = aux; 117 struct bha_softc *sc = (void *)self; 118 bus_space_tag_t iot = ia->ia_iot; 119 bus_space_handle_t ioh; 120 struct bha_probe_data bpd; 121 isa_chipset_tag_t ic = ia->ia_ic; 122 int error; 123 124 printf("\n"); 125 126 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) { 127 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 128 return; 129 } 130 131 sc->sc_iot = iot; 132 sc->sc_ioh = ioh; 133 sc->sc_dmat = ia->ia_dmat; 134 if (!bha_probe_inquiry(iot, ioh, &bpd)) { 135 printf("%s: bha_isa_attach failed\n", sc->sc_dev.dv_xname); 136 return; 137 } 138 139 sc->sc_dmaflags = 0; 140 if (bpd.sc_drq != -1) { 141 if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) { 142 printf("%s: unable to cascade DRQ, error = %d\n", 143 sc->sc_dev.dv_xname, error); 144 return; 145 } 146 } else { 147 /* 148 * We have a VLB controller. If we're at least both 149 * hardware revision E and firmware revision 3.37, 150 * we can do 32-bit DMA (earlier revisions are buggy 151 * in this regard). 152 */ 153 (void) bha_info(sc); 154 if (strcmp(sc->sc_firmware, "3.37") < 0) 155 printf("%s: buggy VLB controller, disabling 32-bit DMA\n", 156 sc->sc_dev.dv_xname); 157 else 158 sc->sc_dmaflags = ISABUS_DMA_32BIT; 159 } 160 161 sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO, 162 bha_intr, sc); 163 if (sc->sc_ih == NULL) { 164 printf("%s: couldn't establish interrupt\n", 165 sc->sc_dev.dv_xname); 166 return; 167 } 168 169 bha_attach(sc); 170 } 171