1 /* $OpenBSD: isa.c,v 1.39 2003/06/03 21:09:02 deraadt Exp $ */ 2 /* $NetBSD: isa.c,v 1.85 1996/05/14 00:31:04 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1997, Jason Downs. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /*- 30 * Copyright (c) 1993, 1994 Charles Hannum. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by Charles Hannum. 43 * 4. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/kernel.h> 61 #include <sys/conf.h> 62 #include <sys/malloc.h> 63 #include <sys/device.h> 64 #include <sys/extent.h> 65 66 #include <machine/intr.h> 67 68 #include <dev/isa/isareg.h> 69 #include <dev/isa/isavar.h> 70 #include <dev/isa/isadmareg.h> 71 72 int isamatch(struct device *, void *, void *); 73 void isaattach(struct device *, struct device *, void *); 74 75 extern int autoconf_verbose; 76 77 struct cfattach isa_ca = { 78 sizeof(struct isa_softc), isamatch, isaattach 79 }; 80 81 struct cfdriver isa_cd = { 82 NULL, "isa", DV_DULL, 1 83 }; 84 85 int 86 isamatch(parent, match, aux) 87 struct device *parent; 88 void *match, *aux; 89 { 90 struct cfdata *cf = match; 91 struct isabus_attach_args *iba = aux; 92 93 if (strcmp(iba->iba_busname, cf->cf_driver->cd_name)) 94 return (0); 95 96 /* XXX check other indicators */ 97 98 return (1); 99 } 100 101 void 102 isaattach(parent, self, aux) 103 struct device *parent, *self; 104 void *aux; 105 { 106 struct isa_softc *sc = (struct isa_softc *)self; 107 struct isabus_attach_args *iba = aux; 108 109 isa_attach_hook(parent, self, iba); 110 printf("\n"); 111 112 sc->sc_iot = iba->iba_iot; 113 sc->sc_memt = iba->iba_memt; 114 #if NISADMA > 0 115 sc->sc_dmat = iba->iba_dmat; 116 #endif /* NISADMA > 0 */ 117 sc->sc_ic = iba->iba_ic; 118 119 #if NISAPNP > 0 120 isapnp_isa_attach_hook(sc); 121 #endif 122 123 #if NISADMA > 0 124 /* 125 * Map the registers used by the ISA DMA controller. 126 * XXX Should be done in the isadmaattach routine.. but the delay 127 * XXX port makes it troublesome. Note that these aren't really 128 * XXX valid on ISA busses without DMA. 129 */ 130 if (bus_space_map(sc->sc_iot, IO_DMA1, DMA1_IOSIZE, 0, &sc->sc_dma1h)) 131 panic("isaattach: can't map DMA controller #1"); 132 if (bus_space_map(sc->sc_iot, IO_DMA2, DMA2_IOSIZE, 0, &sc->sc_dma2h)) 133 panic("isaattach: can't map DMA controller #2"); 134 if (bus_space_map(sc->sc_iot, IO_DMAPG, 0xf, 0, &sc->sc_dmapgh)) 135 panic("isaattach: can't map DMA page registers"); 136 137 /* 138 * Map port 0x84, which causes a 1.25us delay when read. 139 * We do this now, since several drivers need it. 140 * XXX this port doesn't exist on all ISA busses... 141 */ 142 if (bus_space_subregion(sc->sc_iot, sc->sc_dmapgh, 0x04, 1, 143 &sc->sc_delaybah)) 144 #else /* NISADMA > 0 */ 145 if (bus_space_map(sc->sc_iot, IO_DMAPG + 0x4, 0x1, 0, 146 &sc->sc_delaybah)) 147 #endif /* NISADMA > 0 */ 148 panic("isaattach: can't map `delay port'"); /* XXX */ 149 150 TAILQ_INIT(&sc->sc_subdevs); 151 config_scan(isascan, self); 152 } 153 154 int 155 isaprint(aux, isa) 156 void *aux; 157 const char *isa; 158 { 159 struct isa_attach_args *ia = aux; 160 161 if (ia->ia_iosize) 162 printf(" port 0x%x", ia->ia_iobase); 163 if (ia->ia_iosize > 1) 164 printf("/%d", ia->ia_iosize); 165 if (ia->ia_msize) 166 printf(" iomem 0x%x", ia->ia_maddr); 167 if (ia->ia_msize > 1) 168 printf("/%d", ia->ia_msize); 169 if (ia->ia_irq != IRQUNK) 170 printf(" irq %d", ia->ia_irq); 171 if (ia->ia_drq != DRQUNK) 172 printf(" drq %d", ia->ia_drq); 173 if (ia->ia_drq2 != DRQUNK) 174 printf(" drq2 %d", ia->ia_drq2); 175 return (UNCONF); 176 } 177 178 void 179 isascan(parent, match) 180 struct device *parent; 181 void *match; 182 { 183 struct isa_softc *sc = (struct isa_softc *)parent; 184 struct device *dev = match; 185 struct cfdata *cf = dev->dv_cfdata; 186 struct isa_attach_args ia; 187 188 ia.ia_iot = sc->sc_iot; 189 ia.ia_memt = sc->sc_memt; 190 #if NISADMA > 0 191 ia.ia_dmat = sc->sc_dmat; 192 #endif /* NISADMA > 0 */ 193 ia.ia_ic = sc->sc_ic; 194 ia.ia_iobase = cf->cf_iobase; 195 ia.ia_iosize = 0x666; 196 ia.ia_maddr = cf->cf_maddr; 197 ia.ia_msize = cf->cf_msize; 198 ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq; 199 ia.ia_drq = cf->cf_drq; 200 ia.ia_drq2 = cf->cf_drq2; 201 ia.ia_delaybah = sc->sc_delaybah; 202 203 if (cf->cf_fstate == FSTATE_STAR) { 204 struct isa_attach_args ia2 = ia; 205 206 if (autoconf_verbose) 207 printf(">>> probing for %s*\n", 208 cf->cf_driver->cd_name); 209 while ((*cf->cf_attach->ca_match)(parent, dev, &ia2) > 0) { 210 #if !defined(__NO_ISA_INTR_CHECK) 211 if ((ia2.ia_irq != IRQUNK) && 212 !isa_intr_check(sc->sc_ic, ia2.ia_irq, IST_EDGE)) { 213 printf("%s%d: irq %d already in use\n", 214 cf->cf_driver->cd_name, cf->cf_unit, 215 ia2.ia_irq); 216 ia2 = ia; 217 break; 218 } 219 #endif 220 221 if (autoconf_verbose) 222 printf(">>> probe for %s* clone into %s%d\n", 223 cf->cf_driver->cd_name, 224 cf->cf_driver->cd_name, cf->cf_unit); 225 if (ia2.ia_iosize == 0x666) { 226 printf("%s: iosize not repaired by driver\n", 227 sc->sc_dev.dv_xname); 228 ia2.ia_iosize = 0; 229 } 230 config_attach(parent, dev, &ia2, isaprint); 231 dev = config_make_softc(parent, cf); 232 #if NISADMA > 0 233 if (ia2.ia_drq != DRQUNK) 234 ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq); 235 if (ia2.ia_drq2 != DRQUNK) 236 ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq2); 237 #endif /* NISAMDA > 0 */ 238 ia2 = ia; 239 } 240 if (autoconf_verbose) 241 printf(">>> probing for %s* finished\n", 242 cf->cf_driver->cd_name); 243 free(dev, M_DEVBUF); 244 return; 245 } 246 247 if (autoconf_verbose) 248 printf(">>> probing for %s%d\n", cf->cf_driver->cd_name, 249 cf->cf_unit); 250 if ((*cf->cf_attach->ca_match)(parent, dev, &ia) > 0) { 251 #if !defined(__NO_ISA_INTR_CHECK) 252 if ((ia.ia_irq != IRQUNK) && 253 !isa_intr_check(sc->sc_ic, ia.ia_irq, IST_EDGE)) { 254 printf("%s%d: irq %d already in use\n", 255 cf->cf_driver->cd_name, cf->cf_unit, ia.ia_irq); 256 free(dev, M_DEVBUF); 257 } else { 258 #endif 259 if (autoconf_verbose) 260 printf(">>> probing for %s%d succeeded\n", 261 cf->cf_driver->cd_name, cf->cf_unit); 262 config_attach(parent, dev, &ia, isaprint); 263 264 #if NISADMA > 0 265 if (ia.ia_drq != DRQUNK) 266 ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq); 267 if (ia.ia_drq2 != DRQUNK) 268 ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq2); 269 #endif /* NISAMDA > 0 */ 270 #if !defined(__NO_ISA_INTR_CHECK) 271 } 272 #endif 273 } else { 274 if (autoconf_verbose) 275 printf(">>> probing for %s%d failed\n", 276 cf->cf_driver->cd_name, cf->cf_unit); 277 free(dev, M_DEVBUF); 278 } 279 } 280 281 char * 282 isa_intr_typename(type) 283 int type; 284 { 285 286 switch (type) { 287 case IST_NONE: 288 return ("none"); 289 case IST_PULSE: 290 return ("pulsed"); 291 case IST_EDGE: 292 return ("edge-triggered"); 293 case IST_LEVEL: 294 return ("level-triggered"); 295 default: 296 panic("isa_intr_typename: invalid type %d", type); 297 } 298 } 299