1 /* $NetBSD: aha_isa.c,v 1.25 2008/04/28 20:23:51 martin 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: aha_isa.c,v 1.25 2008/04/28 20:23:51 martin 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/scsi_all.h> 43 #include <dev/scsipi/scsipi_all.h> 44 #include <dev/scsipi/scsiconf.h> 45 46 #include <dev/isa/isavar.h> 47 #include <dev/isa/isadmavar.h> 48 49 #include <dev/ic/ahareg.h> 50 #include <dev/ic/ahavar.h> 51 52 #define AHA_ISA_IOSIZE 4 53 54 int aha_isa_probe(struct device *, struct cfdata *, void *); 55 void aha_isa_attach(struct device *, struct device *, void *); 56 57 CFATTACH_DECL(aha_isa, sizeof(struct aha_softc), 58 aha_isa_probe, aha_isa_attach, NULL, NULL); 59 60 /* 61 * Check the slots looking for a board we recognise 62 * If we find one, note it's address (slot) and call 63 * the actual probe routine to check it out. 64 */ 65 int 66 aha_isa_probe(struct device *parent, struct cfdata *match, 67 void *aux) 68 { 69 struct isa_attach_args *ia = aux; 70 bus_space_tag_t iot = ia->ia_iot; 71 bus_space_handle_t ioh; 72 struct aha_probe_data apd; 73 int rv; 74 75 if (ia->ia_nio < 1) 76 return (0); 77 if (ia->ia_nirq < 1) 78 return (0); 79 if (ia->ia_ndrq < 1) 80 return (0); 81 82 if (ISA_DIRECT_CONFIG(ia)) 83 return (0); 84 85 /* Disallow wildcarded i/o address. */ 86 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 87 return (0); 88 89 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) 90 return (0); 91 92 rv = aha_find(iot, ioh, &apd); 93 94 bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE); 95 96 if (rv) { 97 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 98 ia->ia_irq[0].ir_irq != apd.sc_irq) 99 return (0); 100 if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ && 101 ia->ia_drq[0].ir_drq != apd.sc_drq) 102 return (0); 103 104 ia->ia_nio = 1; 105 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE; 106 107 ia->ia_nirq = 1; 108 ia->ia_irq[0].ir_irq = apd.sc_irq; 109 110 ia->ia_ndrq = 1; 111 ia->ia_drq[0].ir_drq = apd.sc_drq; 112 113 ia->ia_niomem = 0; 114 } 115 return (rv); 116 } 117 118 /* 119 * Attach all the sub-devices we can find 120 */ 121 void 122 aha_isa_attach(struct device *parent, struct device *self, void *aux) 123 { 124 struct isa_attach_args *ia = aux; 125 struct aha_softc *sc = (void *)self; 126 bus_space_tag_t iot = ia->ia_iot; 127 bus_space_handle_t ioh; 128 struct aha_probe_data apd; 129 isa_chipset_tag_t ic = ia->ia_ic; 130 int error; 131 132 printf("\n"); 133 134 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) { 135 aprint_error_dev(&sc->sc_dev, "can't map i/o space\n"); 136 return; 137 } 138 139 sc->sc_iot = iot; 140 sc->sc_ioh = ioh; 141 sc->sc_dmat = ia->ia_dmat; 142 if (!aha_find(iot, ioh, &apd)) { 143 aprint_error_dev(&sc->sc_dev, "aha_find failed\n"); 144 return; 145 } 146 147 if (apd.sc_drq != -1) { 148 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) { 149 aprint_error_dev(&sc->sc_dev, "unable to cascade DRQ, error = %d\n", error); 150 return; 151 } 152 } 153 154 sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO, 155 aha_intr, sc); 156 if (sc->sc_ih == NULL) { 157 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt\n"); 158 return; 159 } 160 161 aha_attach(sc, &apd); 162 } 163