aha_isa.c revision 1.24
1 /* $NetBSD: aha_isa.c,v 1.24 2008/04/08 20:08:49 cegger 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 1.24 2008/04/08 20:08:49 cegger Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <sys/bus.h> 47 #include <sys/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(struct device *, struct cfdata *, void *); 62 void aha_isa_attach(struct device *, struct device *, void *); 63 64 CFATTACH_DECL(aha_isa, sizeof(struct aha_softc), 65 aha_isa_probe, aha_isa_attach, NULL, NULL); 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 aha_isa_probe(struct device *parent, struct cfdata *match, 74 void *aux) 75 { 76 struct isa_attach_args *ia = aux; 77 bus_space_tag_t iot = ia->ia_iot; 78 bus_space_handle_t ioh; 79 struct aha_probe_data apd; 80 int rv; 81 82 if (ia->ia_nio < 1) 83 return (0); 84 if (ia->ia_nirq < 1) 85 return (0); 86 if (ia->ia_ndrq < 1) 87 return (0); 88 89 if (ISA_DIRECT_CONFIG(ia)) 90 return (0); 91 92 /* Disallow wildcarded i/o address. */ 93 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 94 return (0); 95 96 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) 97 return (0); 98 99 rv = aha_find(iot, ioh, &apd); 100 101 bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE); 102 103 if (rv) { 104 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 105 ia->ia_irq[0].ir_irq != apd.sc_irq) 106 return (0); 107 if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ && 108 ia->ia_drq[0].ir_drq != apd.sc_drq) 109 return (0); 110 111 ia->ia_nio = 1; 112 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE; 113 114 ia->ia_nirq = 1; 115 ia->ia_irq[0].ir_irq = apd.sc_irq; 116 117 ia->ia_ndrq = 1; 118 ia->ia_drq[0].ir_drq = apd.sc_drq; 119 120 ia->ia_niomem = 0; 121 } 122 return (rv); 123 } 124 125 /* 126 * Attach all the sub-devices we can find 127 */ 128 void 129 aha_isa_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct isa_attach_args *ia = aux; 132 struct aha_softc *sc = (void *)self; 133 bus_space_tag_t iot = ia->ia_iot; 134 bus_space_handle_t ioh; 135 struct aha_probe_data apd; 136 isa_chipset_tag_t ic = ia->ia_ic; 137 int error; 138 139 printf("\n"); 140 141 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) { 142 aprint_error_dev(&sc->sc_dev, "can't map i/o space\n"); 143 return; 144 } 145 146 sc->sc_iot = iot; 147 sc->sc_ioh = ioh; 148 sc->sc_dmat = ia->ia_dmat; 149 if (!aha_find(iot, ioh, &apd)) { 150 aprint_error_dev(&sc->sc_dev, "aha_find failed\n"); 151 return; 152 } 153 154 if (apd.sc_drq != -1) { 155 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) { 156 aprint_error_dev(&sc->sc_dev, "unable to cascade DRQ, error = %d\n", error); 157 return; 158 } 159 } 160 161 sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO, 162 aha_intr, sc); 163 if (sc->sc_ih == NULL) { 164 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt\n"); 165 return; 166 } 167 168 aha_attach(sc, &apd); 169 } 170
Indexes created Mon Sep 29 18:09:42 GMT 2025