aic_isa.c revision 1.20
1 /* $NetBSD: aic_isa.c,v 1.20 2007/10/19 12:00:14 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996 Charles M. Hannum. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles M. Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * Copyright (c) 1994 Jarle Greipsland 21 * All rights reserved. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. The name of the author may not be used to endorse or promote products 32 * derived from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 35 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 36 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 37 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 38 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 39 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 40 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 42 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 43 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 44 * POSSIBILITY OF SUCH DAMAGE. 45 */ 46 47 /* 48 * Acknowledgements: Many of the algorithms used in this driver are 49 * inspired by the work of Julian Elischer (julian (at) tfs.com) and 50 * Charles Hannum (mycroft (at) duality.gnu.ai.mit.edu). Thanks a million! 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: aic_isa.c,v 1.20 2007/10/19 12:00:14 ad Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/errno.h> 60 #include <sys/ioctl.h> 61 #include <sys/device.h> 62 #include <sys/buf.h> 63 #include <sys/proc.h> 64 #include <sys/user.h> 65 #include <sys/queue.h> 66 67 #include <sys/bus.h> 68 #include <sys/intr.h> 69 70 #include <dev/scsipi/scsi_all.h> 71 #include <dev/scsipi/scsipi_all.h> 72 #include <dev/scsipi/scsiconf.h> 73 74 #include <dev/isa/isavar.h> 75 76 #include <dev/ic/aic6360reg.h> 77 #include <dev/ic/aic6360var.h> 78 79 int aic_isa_probe(struct device *, struct cfdata *, void *); 80 81 struct aic_isa_softc { 82 struct aic_softc sc_aic; /* real "aic" softc */ 83 84 /* ISA-specific goo. */ 85 void *sc_ih; /* interrupt handler */ 86 }; 87 88 CFATTACH_DECL(aic_isa, sizeof(struct aic_isa_softc), 89 aic_isa_probe, aic_isa_attach, NULL, NULL); 90 91 92 /* 94 * INITIALIZATION ROUTINES (probe, attach ++) 95 */ 96 97 /* 98 * aic_isa_probe: probe for AIC6360 SCSI-controller 99 * returns non-zero value if a controller is found. 100 */ 101 int 102 aic_isa_probe(struct device *parent, struct cfdata *match, 103 void *aux) 104 { 105 struct isa_attach_args *ia = aux; 106 bus_space_tag_t iot = ia->ia_iot; 107 bus_space_handle_t ioh; 108 int rv; 109 110 if (ia->ia_nio < 1) 111 return (0); 112 if (ia->ia_nirq < 1) 113 return (0); 114 115 if (ISA_DIRECT_CONFIG(ia)) 116 return (0); 117 118 /* Disallow wildcarded i/o address. */ 119 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 120 return (0); 121 122 /* Disallow wildcarded IRQ. */ 123 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 124 return (0); 125 126 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) 127 return (0); 128 129 rv = aic_find(iot, ioh); 130 131 bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE); 132 133 if (rv) { 134 ia->ia_nio = 1; 135 ia->ia_io[0].ir_size = AIC_ISA_IOSIZE; 136 137 ia->ia_nirq = 1; 138 139 ia->ia_niomem = 0; 140 ia->ia_ndrq = 0; 141 } 142 return rv; 143 } 144 145 void 146 aic_isa_attach(struct device *parent, struct device *self, void *aux) 147 { 148 struct isa_attach_args *ia = aux; 149 struct aic_isa_softc *isc = (void *)self; 150 struct aic_softc *sc = &isc->sc_aic; 151 bus_space_tag_t iot = ia->ia_iot; 152 bus_space_handle_t ioh; 153 isa_chipset_tag_t ic = ia->ia_ic; 154 155 printf("\n"); 156 157 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) { 158 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 159 return; 160 } 161 162 sc->sc_iot = iot; 163 sc->sc_ioh = ioh; 164 if (!aic_find(iot, ioh)) { 165 printf("%s: aic_find failed", sc->sc_dev.dv_xname); 166 return; 167 } 168 169 isc->sc_ih = isa_intr_establish(ic, ia->ia_irq[0].ir_irq, IST_EDGE, 170 IPL_BIO, aicintr, sc); 171 if (isc->sc_ih == NULL) { 172 printf("%s: couldn't establish interrupt\n", 173 sc->sc_dev.dv_xname); 174 return; 175 } 176 177 aicattach(sc); 178 } 179
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