1 /* $NetBSD: isa.c,v 1.135 2009/04/07 21:48:46 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2001, 2008 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; by Jason R. Thorpe of Wasabi Systems, Inc. 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: isa.c,v 1.135 2009/04/07 21:48:46 dyoung Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/malloc.h> 39 #include <sys/device.h> 40 41 #include <sys/intr.h> 42 43 #include <dev/isa/isareg.h> 44 #include <dev/isa/isavar.h> 45 #include <dev/isa/isadmareg.h> 46 47 #include "isadma.h" 48 49 #include "isapnp.h" 50 #if NISAPNP > 0 51 #include <dev/isapnp/isapnpreg.h> 52 #include <dev/isapnp/isapnpvar.h> 53 #endif 54 55 #include "locators.h" 56 57 int isamatch(device_t, cfdata_t, void *); 58 void isaattach(device_t, device_t, void *); 59 int isarescan(device_t, const char *, const int *); 60 void isachilddetached(device_t, device_t); 61 int isaprint(void *, const char *); 62 63 CFATTACH_DECL2_NEW(isa, sizeof(struct isa_softc), 64 isamatch, isaattach, NULL, NULL, isarescan, isachilddetached); 65 66 void isa_attach_knowndevs(struct isa_softc *); 67 void isa_free_knowndevs(struct isa_softc *); 68 69 int isasubmatch(device_t, cfdata_t, const int *, void *); 70 int isasearch(device_t, cfdata_t, const int *, void *); 71 72 static int isa_slotcount = -1; /* -1 == don't know how many */ 73 74 int 75 isamatch(device_t parent, cfdata_t cf, void *aux) 76 { 77 /* XXX check other indicators */ 78 79 return (1); 80 } 81 82 void 83 isaattach(device_t parent, device_t self, void *aux) 84 { 85 struct isa_softc *sc = device_private(self); 86 struct isabus_attach_args *iba = aux; 87 static const int wildcard[ISACF_NLOCS] = { 88 ISACF_PORT_DEFAULT, ISACF_SIZE_DEFAULT, 89 ISACF_IOMEM_DEFAULT, ISACF_IOSIZ_DEFAULT, 90 ISACF_IRQ_DEFAULT, ISACF_DRQ_DEFAULT, ISACF_DRQ2_DEFAULT 91 }; 92 93 TAILQ_INIT(&sc->sc_knowndevs); 94 sc->sc_dynamicdevs = 0; 95 96 sc->sc_dev = self; 97 98 isa_attach_hook(parent, self, iba); 99 aprint_naive("\n"); 100 aprint_normal("\n"); 101 102 /* XXX Add code to fetch known-devices. */ 103 104 sc->sc_iot = iba->iba_iot; 105 sc->sc_memt = iba->iba_memt; 106 sc->sc_dmat = iba->iba_dmat; 107 sc->sc_ic = iba->iba_ic; 108 109 #if NISAPNP > 0 110 /* 111 * Reset isapnp cards that the bios configured for us 112 */ 113 isapnp_isa_attach_hook(sc); 114 #endif 115 116 #if NISADMA > 0 117 /* 118 * Initialize our DMA state. 119 */ 120 isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self); 121 #endif 122 123 /* Attach all direct-config children. */ 124 isa_attach_knowndevs(sc); 125 126 /* 127 * If we don't support dynamic hello/goodbye of devices, 128 * then free the knowndevs info now. 129 */ 130 if (sc->sc_dynamicdevs == 0) 131 isa_free_knowndevs(sc); 132 133 /* Attach all indirect-config children. */ 134 isarescan(self, "isa", wildcard); 135 136 if (!pmf_device_register(self, NULL, NULL)) 137 aprint_error_dev(self, "couldn't establish power handler\n"); 138 } 139 140 int 141 isarescan(device_t self, const char *ifattr, const int *locators) 142 { 143 int locs[ISACF_NLOCS]; 144 145 memcpy(locs, locators, sizeof(locs)); 146 147 /* 148 * XXX Bus independent code calling this function does not 149 * know the locator default values. It assumes "-1" for now. 150 * (should be made available by "config" one day) 151 * So fixup where the "-1" is not correct. 152 */ 153 if (locs[ISACF_SIZE] == -1) 154 locs[ISACF_SIZE] = ISACF_SIZE_DEFAULT; 155 if (locs[ISACF_IOSIZ] == -1) 156 locs[ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT; 157 158 config_search_loc(isasearch, self, ifattr, locs, NULL); 159 return (0); 160 } 161 162 void 163 isachilddetached(device_t self, device_t child) 164 { 165 /* nothing to do */ 166 } 167 168 void 169 isa_attach_knowndevs(struct isa_softc *sc) 170 { 171 struct isa_attach_args ia; 172 struct isa_knowndev *ik; 173 174 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 175 return; 176 177 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 178 if (ik->ik_claimed != NULL) 179 continue; 180 181 ia.ia_iot = sc->sc_iot; 182 ia.ia_memt = sc->sc_memt; 183 ia.ia_dmat = sc->sc_dmat; 184 ia.ia_ic = sc->sc_ic; 185 186 ia.ia_pnpname = ik->ik_pnpname; 187 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 188 189 ia.ia_io = ik->ik_io; 190 ia.ia_nio = ik->ik_nio; 191 192 ia.ia_iomem = ik->ik_iomem; 193 ia.ia_niomem = ik->ik_niomem; 194 195 ia.ia_irq = ik->ik_irq; 196 ia.ia_nirq = ik->ik_nirq; 197 198 ia.ia_drq = ik->ik_drq; 199 ia.ia_ndrq = ik->ik_ndrq; 200 201 ia.ia_aux = NULL; 202 203 /* XXX should setup locator array */ 204 205 ik->ik_claimed = config_found_sm_loc(sc->sc_dev, 206 "isa", 0, &ia, isaprint, isasubmatch); 207 } 208 } 209 210 void 211 isa_free_knowndevs(struct isa_softc *sc) 212 { 213 struct isa_knowndev *ik; 214 struct isa_pnpname *ipn; 215 216 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 217 218 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 219 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 220 FREEIT(ik->ik_pnpname); 221 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 222 ik->ik_pnpcompatnames = ipn->ipn_next; 223 free(ipn->ipn_name, M_DEVBUF); 224 free(ipn, M_DEVBUF); 225 } 226 FREEIT(ik->ik_io); 227 FREEIT(ik->ik_iomem); 228 FREEIT(ik->ik_irq); 229 FREEIT(ik->ik_drq); 230 free(ik, M_DEVBUF); 231 } 232 233 #undef FREEIT 234 } 235 236 static int 237 checkattachargs(struct isa_attach_args *ia, const int *loc) 238 { 239 int i; 240 241 if (ia->ia_nio == 0) { 242 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 243 return (0); 244 } else { 245 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 246 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 247 return (0); 248 } 249 250 if (ia->ia_niomem == 0) { 251 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 252 return (0); 253 } else { 254 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 255 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 256 return (0); 257 } 258 259 if (ia->ia_nirq == 0) { 260 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 261 return (0); 262 } else { 263 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 264 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 265 return (0); 266 } 267 268 if (ia->ia_ndrq == 0) { 269 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 270 return (0); 271 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 272 return (0); 273 } else { 274 for (i = 0; i < 2; i++) { 275 if (i == ia->ia_ndrq) 276 break; 277 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 278 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 279 return (0); 280 } 281 for (; i < 2; i++) { 282 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 283 return (0); 284 } 285 } 286 287 return (1); 288 } 289 290 int 291 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 292 { 293 struct isa_attach_args *ia = aux; 294 295 if (!checkattachargs(ia, cf->cf_loc)) 296 return (0); 297 298 return (config_match(parent, cf, aux)); 299 } 300 301 int 302 isaprint(void *aux, const char *isa) 303 { 304 struct isa_attach_args *ia = aux; 305 const char *sep; 306 int i; 307 308 /* 309 * This block of code only fires if we have a direct-config'd 310 * device for which there is no driver match. 311 */ 312 if (isa != NULL) { 313 struct isa_pnpname *ipn; 314 315 if (ia->ia_pnpname != NULL) 316 aprint_normal("%s", ia->ia_pnpname); 317 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 318 aprint_normal(" ("); /* ) */ 319 for (sep = ""; ipn != NULL; 320 ipn = ipn->ipn_next, sep = " ") { 321 aprint_normal("%s%s", sep, ipn->ipn_name); 322 } 323 /* ( */ aprint_normal(")"); 324 } 325 aprint_normal(" at %s", isa); 326 } 327 328 if (ia->ia_nio) { 329 sep = ""; 330 aprint_normal(" port "); 331 for (i = 0; i < ia->ia_nio; i++) { 332 if (ia->ia_io[i].ir_size == 0) 333 continue; 334 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 335 if (ia->ia_io[i].ir_size > 1) 336 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 337 ia->ia_io[i].ir_size - 1); 338 sep = ","; 339 } 340 } 341 342 if (ia->ia_niomem) { 343 sep = ""; 344 aprint_normal(" iomem "); 345 for (i = 0; i < ia->ia_niomem; i++) { 346 if (ia->ia_iomem[i].ir_size == 0) 347 continue; 348 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 349 if (ia->ia_iomem[i].ir_size > 1) 350 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 351 ia->ia_iomem[i].ir_size - 1); 352 sep = ","; 353 } 354 } 355 356 if (ia->ia_nirq) { 357 sep = ""; 358 aprint_normal(" irq "); 359 for (i = 0; i < ia->ia_nirq; i++) { 360 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 361 continue; 362 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 363 sep = ","; 364 } 365 } 366 367 if (ia->ia_ndrq) { 368 sep = ""; 369 aprint_normal(" drq "); 370 for (i = 0; i < ia->ia_ndrq; i++) { 371 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 372 continue; 373 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 374 sep = ","; 375 } 376 } 377 378 return (UNCONF); 379 } 380 381 int 382 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 383 { 384 struct isa_io res_io[1]; 385 struct isa_iomem res_mem[1]; 386 struct isa_irq res_irq[1]; 387 struct isa_drq res_drq[2]; 388 struct isa_softc *sc = device_private(parent); 389 struct isa_attach_args ia; 390 int flocs[ISACF_NLOCS]; 391 int tryagain; 392 393 do { 394 ia.ia_pnpname = NULL; 395 ia.ia_pnpcompatnames = NULL; 396 397 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 398 res_io[0].ir_size = 0; 399 400 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 401 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 402 403 res_irq[0].ir_irq = 404 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 405 406 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 407 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 408 409 ia.ia_iot = sc->sc_iot; 410 ia.ia_memt = sc->sc_memt; 411 ia.ia_dmat = sc->sc_dmat; 412 ia.ia_ic = sc->sc_ic; 413 414 ia.ia_io = res_io; 415 ia.ia_nio = 1; 416 417 ia.ia_iomem = res_mem; 418 ia.ia_niomem = 1; 419 420 ia.ia_irq = res_irq; 421 ia.ia_nirq = 1; 422 423 ia.ia_drq = res_drq; 424 ia.ia_ndrq = 2; 425 426 if (!checkattachargs(&ia, slocs)) 427 return (0); 428 429 tryagain = 0; 430 if (config_match(parent, cf, &ia) > 0) { 431 /* 432 * This is not necessary for detach, but might 433 * still be useful to collect device information. 434 */ 435 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 436 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 437 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 438 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 439 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 440 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 441 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 442 config_attach_loc(parent, cf, flocs, &ia, isaprint); 443 tryagain = (cf->cf_fstate == FSTATE_STAR); 444 } 445 } while (tryagain); 446 447 return (0); 448 } 449 450 const char * 451 isa_intr_typename(int type) 452 { 453 454 switch (type) { 455 case IST_NONE: 456 return ("none"); 457 case IST_PULSE: 458 return ("pulsed"); 459 case IST_EDGE: 460 return ("edge-triggered"); 461 case IST_LEVEL: 462 return ("level-triggered"); 463 default: 464 panic("isa_intr_typename: invalid type %d", type); 465 } 466 } 467 468 int 469 isa_get_slotcount(void) 470 { 471 472 return isa_slotcount; 473 } 474 475 void 476 isa_set_slotcount(int arg) 477 { 478 479 isa_slotcount = arg; 480 } 481