bha_isa.c revision 1.35
1 /* $NetBSD: bha_isa.c,v 1.35 2012/10/27 17:18:24 chs 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: bha_isa.c,v 1.35 2012/10/27 17:18:24 chs Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 39 #include <sys/bus.h> 40 #include <sys/intr.h> 41 42 #include <dev/scsipi/scsipi_all.h> 43 #include <dev/scsipi/scsiconf.h> 44 45 #include <dev/isa/isavar.h> 46 #include <dev/isa/isadmavar.h> 47 48 #include <dev/ic/bhareg.h> 49 #include <dev/ic/bhavar.h> 50 51 #define BHA_ISA_IOSIZE 4 52 53 int bha_isa_probe(device_t, cfdata_t, void *); 54 void bha_isa_attach(device_t, device_t, void *); 55 56 CFATTACH_DECL_NEW(bha_isa, sizeof(struct bha_softc), 57 bha_isa_probe, bha_isa_attach, NULL, NULL); 58 59 /* 60 * Check the slots looking for a board we recognise 61 * If we find one, note it's address (slot) and call 62 * the actual probe routine to check it out. 63 */ 64 int 65 bha_isa_probe(device_t parent, cfdata_t match, void *aux) 66 { 67 struct isa_attach_args *ia = aux; 68 bus_space_tag_t iot = ia->ia_iot; 69 bus_space_handle_t ioh; 70 struct bha_probe_data bpd; 71 int rv; 72 73 if (ia->ia_nio < 1) 74 return (0); 75 if (ia->ia_nirq < 1) 76 return (0); 77 if (ia->ia_ndrq < 1) 78 return (0); 79 80 if (ISA_DIRECT_CONFIG(ia)) 81 return (0); 82 83 /* Disallow wildcarded i/o address. */ 84 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 85 return (0); 86 87 if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh)) 88 return (0); 89 90 rv = bha_probe_inquiry(iot, ioh, &bpd); 91 92 bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE); 93 94 if (rv) { 95 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 96 ia->ia_irq[0].ir_irq != bpd.sc_irq) 97 return (0); 98 if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ && 99 ia->ia_drq[0].ir_drq != bpd.sc_drq) 100 return (0); 101 102 ia->ia_nio = 1; 103 ia->ia_io[0].ir_size = BHA_ISA_IOSIZE; 104 105 ia->ia_nirq = 1; 106 ia->ia_irq[0].ir_irq = bpd.sc_irq; 107 108 ia->ia_ndrq = 1; 109 ia->ia_drq[0].ir_drq = bpd.sc_drq; 110 111 ia->ia_niomem = 0; 112 } 113 return (rv); 114 } 115 116 /* 117 * Attach all the sub-devices we can find 118 */ 119 void 120 bha_isa_attach(device_t parent, device_t self, void *aux) 121 { 122 struct isa_attach_args *ia = aux; 123 struct bha_softc *sc = device_private(self); 124 bus_space_tag_t iot = ia->ia_iot; 125 bus_space_handle_t ioh; 126 struct bha_probe_data bpd; 127 isa_chipset_tag_t ic = ia->ia_ic; 128 int error; 129 130 printf("\n"); 131 132 sc->sc_dev = self; 133 if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh)) { 134 aprint_error_dev(sc->sc_dev, "can't map i/o space\n"); 135 return; 136 } 137 138 sc->sc_iot = iot; 139 sc->sc_ioh = ioh; 140 sc->sc_dmat = ia->ia_dmat; 141 if (!bha_probe_inquiry(iot, ioh, &bpd)) { 142 aprint_error_dev(sc->sc_dev, "bha_isa_attach failed\n"); 143 return; 144 } 145 146 sc->sc_dmaflags = 0; 147 if (bpd.sc_drq != -1) { 148 if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) { 149 aprint_error_dev(sc->sc_dev, " unable to cascade DRQ, error = %d\n", error); 150 return; 151 } 152 } else { 153 /* 154 * We have a VLB controller. If we're at least both 155 * hardware revision E and firmware revision 3.37, 156 * we can do 32-bit DMA (earlier revisions are buggy 157 * in this regard). 158 */ 159 (void) bha_info(sc); 160 if (strcmp(sc->sc_firmware, "3.37") < 0) 161 printf("%s: buggy VLB controller, disabling 32-bit DMA\n", 162 device_xname(sc->sc_dev)); 163 else 164 sc->sc_dmaflags = ISABUS_DMA_32BIT; 165 } 166 167 sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO, 168 bha_intr, sc); 169 if (sc->sc_ih == NULL) { 170 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n"); 171 return; 172 } 173 174 bha_attach(sc); 175 } 176
Indexes created Tue Sep 30 17:09:57 GMT 2025