aic_isa.c revision 1.7
1 /* $NetBSD: aic_isa.c,v 1.7 1998/06/09 07:24:56 thorpej 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/types.h> 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/errno.h> 58 #include <sys/ioctl.h> 59 #include <sys/device.h> 60 #include <sys/buf.h> 61 #include <sys/proc.h> 62 #include <sys/user.h> 63 #include <sys/queue.h> 64 65 #include <machine/bus.h> 66 #include <machine/intr.h> 67 68 #include <dev/scsipi/scsi_all.h> 69 #include <dev/scsipi/scsipi_all.h> 70 #include <dev/scsipi/scsiconf.h> 71 72 #include <dev/isa/isavar.h> 73 74 #include <dev/ic/aic6360reg.h> 75 #include <dev/ic/aic6360var.h> 76 77 int aic_isa_probe __P((struct device *, struct cfdata *, void *)); 78 79 struct aic_isa_softc { 80 struct aic_softc sc_aic; /* real "aic" softc */ 81 82 /* ISA-specific goo. */ 83 void *sc_ih; /* interrupt handler */ 84 }; 85 86 struct cfattach aic_isa_ca = { 87 sizeof(struct aic_isa_softc), aic_isa_probe, aic_isa_attach 88 }; 89 90 91 /* 93 * INITIALIZATION ROUTINES (probe, attach ++) 94 */ 95 96 /* 97 * aic_isa_probe: probe for AIC6360 SCSI-controller 98 * returns non-zero value if a controller is found. 99 */ 100 int 101 aic_isa_probe(parent, match, aux) 102 struct device *parent; 103 struct cfdata *match; 104 void *aux; 105 { 106 struct isa_attach_args *ia = aux; 107 bus_space_tag_t iot = ia->ia_iot; 108 bus_space_handle_t ioh; 109 int rv; 110 111 /* Disallow wildcarded i/o address. */ 112 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 113 return (0); 114 115 if (bus_space_map(iot, ia->ia_iobase, AIC_ISA_IOSIZE, 0, &ioh)) 116 return (0); 117 118 AIC_TRACE(("aic_isa_probe: port 0x%x\n", ia->ia_iobase)); 119 rv = aic_find(iot, ioh); 120 121 bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE); 122 123 if (rv) { 124 ia->ia_msize = 0; 125 ia->ia_iosize = AIC_ISA_IOSIZE; 126 } 127 return rv; 128 } 129 130 void 131 aic_isa_attach(parent, self, aux) 132 struct device *parent, *self; 133 void *aux; 134 { 135 struct isa_attach_args *ia = aux; 136 struct aic_isa_softc *isc = (void *)self; 137 struct aic_softc *sc = &isc->sc_aic; 138 bus_space_tag_t iot = ia->ia_iot; 139 bus_space_handle_t ioh; 140 isa_chipset_tag_t ic = ia->ia_ic; 141 142 printf("\n"); 143 144 if (bus_space_map(iot, ia->ia_iobase, AIC_ISA_IOSIZE, 0, &ioh)) { 145 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 146 return; 147 } 148 149 sc->sc_iot = iot; 150 sc->sc_ioh = ioh; 151 AIC_TRACE(("aic_isa_attach: port 0x%x\n", ia->ia_iobase)); 152 if (!aic_find(iot, ioh)) { 153 printf("%s: aic_find failed", sc->sc_dev.dv_xname); 154 return; 155 } 156 157 isc->sc_ih = isa_intr_establish(ic, ia->ia_irq, IST_EDGE, IPL_BIO, 158 aicintr, sc); 159 if (isc->sc_ih == NULL) { 160 printf("%s: couldn't establish interrupt\n", 161 sc->sc_dev.dv_xname); 162 return; 163 } 164 165 aicattach(sc); 166 } 167
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