aha_isa.c revision 1.14
1 /* $NetBSD: aha_isa.c,v 1.14 2002/01/07 21:47:03 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: aha_isa.c,v 1.14 2002/01/07 21:47:03 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/scsi_all.h> 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/ahareg.h> 57 #include <dev/ic/ahavar.h> 58 59 #define AHA_ISA_IOSIZE 4 60 61 int aha_isa_probe __P((struct device *, struct cfdata *, void *)); 62 void aha_isa_attach __P((struct device *, struct device *, void *)); 63 64 struct cfattach aha_isa_ca = { 65 sizeof(struct aha_softc), aha_isa_probe, aha_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 aha_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 aha_probe_data apd; 83 int rv; 84 85 if (ia->ia_nio < 1) 86 return (0); 87 if (ia->ia_nirq < 1) 88 return (0); 89 if (ia->ia_ndrq < 1) 90 return (0); 91 92 if (ISA_DIRECT_CONFIG(ia)) 93 return (0); 94 95 /* Disallow wildcarded i/o address. */ 96 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 97 return (0); 98 99 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) 100 return (0); 101 102 rv = aha_find(iot, ioh, &apd); 103 104 bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE); 105 106 if (rv) { 107 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT && 108 ia->ia_irq[0].ir_irq != apd.sc_irq) 109 return (0); 110 if (ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT && 111 ia->ia_drq[0].ir_drq != apd.sc_drq) 112 return (0); 113 114 ia->ia_nio = 1; 115 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE; 116 117 ia->ia_nirq = 1; 118 ia->ia_irq[0].ir_irq = apd.sc_irq; 119 120 ia->ia_ndrq = 1; 121 ia->ia_drq[0].ir_drq = apd.sc_drq; 122 123 ia->ia_niomem = 0; 124 } 125 return (rv); 126 } 127 128 /* 129 * Attach all the sub-devices we can find 130 */ 131 void 132 aha_isa_attach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct isa_attach_args *ia = aux; 137 struct aha_softc *sc = (void *)self; 138 bus_space_tag_t iot = ia->ia_iot; 139 bus_space_handle_t ioh; 140 struct aha_probe_data apd; 141 isa_chipset_tag_t ic = ia->ia_ic; 142 int error; 143 144 printf("\n"); 145 146 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) { 147 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 148 return; 149 } 150 151 sc->sc_iot = iot; 152 sc->sc_ioh = ioh; 153 sc->sc_dmat = ia->ia_dmat; 154 if (!aha_find(iot, ioh, &apd)) { 155 printf("%s: aha_find failed\n", sc->sc_dev.dv_xname); 156 return; 157 } 158 159 if (apd.sc_drq != -1) { 160 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) { 161 printf("%s: unable to cascade DRQ, error = %d\n", 162 sc->sc_dev.dv_xname, error); 163 return; 164 } 165 } 166 167 sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO, 168 aha_intr, sc); 169 if (sc->sc_ih == NULL) { 170 printf("%s: couldn't establish interrupt\n", 171 sc->sc_dev.dv_xname); 172 return; 173 } 174 175 aha_attach(sc, &apd); 176 } 177
Indexes created Sat Sep 27 14:09:57 GMT 2025