isa.c revision 1.136
1 /* $NetBSD: isa.c,v 1.136 2009/08/18 16:52:42 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 1.136 2009/08/18 16:52:42 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 isadetach(device_t, int); 60 int isarescan(device_t, const char *, const int *); 61 void isachilddetached(device_t, device_t); 62 int isaprint(void *, const char *); 63 64 CFATTACH_DECL2_NEW(isa, sizeof(struct isa_softc), 65 isamatch, isaattach, isadetach, NULL, isarescan, isachilddetached); 66 67 void isa_attach_knowndevs(struct isa_softc *); 68 void isa_free_knowndevs(struct isa_softc *); 69 70 int isasubmatch(device_t, cfdata_t, const int *, void *); 71 int isasearch(device_t, cfdata_t, const int *, void *); 72 73 static int isa_slotcount = -1; /* -1 == don't know how many */ 74 75 int 76 isamatch(device_t parent, cfdata_t cf, void *aux) 77 { 78 /* XXX check other indicators */ 79 80 return (1); 81 } 82 83 void 84 isaattach(device_t parent, device_t self, void *aux) 85 { 86 struct isa_softc *sc = device_private(self); 87 struct isabus_attach_args *iba = aux; 88 static const int wildcard[ISACF_NLOCS] = { 89 ISACF_PORT_DEFAULT, ISACF_SIZE_DEFAULT, 90 ISACF_IOMEM_DEFAULT, ISACF_IOSIZ_DEFAULT, 91 ISACF_IRQ_DEFAULT, ISACF_DRQ_DEFAULT, ISACF_DRQ2_DEFAULT 92 }; 93 94 TAILQ_INIT(&sc->sc_knowndevs); 95 sc->sc_dynamicdevs = 0; 96 97 sc->sc_dev = self; 98 99 isa_attach_hook(parent, self, iba); 100 aprint_naive("\n"); 101 aprint_normal("\n"); 102 103 /* XXX Add code to fetch known-devices. */ 104 105 sc->sc_iot = iba->iba_iot; 106 sc->sc_memt = iba->iba_memt; 107 sc->sc_dmat = iba->iba_dmat; 108 sc->sc_ic = iba->iba_ic; 109 110 #if NISAPNP > 0 111 /* 112 * Reset isapnp cards that the bios configured for us 113 */ 114 isapnp_isa_attach_hook(sc); 115 #endif 116 117 #if NISADMA > 0 118 /* 119 * Initialize our DMA state. 120 */ 121 isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self); 122 #endif 123 124 /* Attach all direct-config children. */ 125 isa_attach_knowndevs(sc); 126 127 /* 128 * If we don't support dynamic hello/goodbye of devices, 129 * then free the knowndevs info now. 130 */ 131 if (sc->sc_dynamicdevs == 0) 132 isa_free_knowndevs(sc); 133 134 /* Attach all indirect-config children. */ 135 isarescan(self, "isa", wildcard); 136 137 if (!pmf_device_register(self, NULL, NULL)) 138 aprint_error_dev(self, "couldn't establish power handler\n"); 139 } 140 141 int 142 isadetach(device_t self, int flags) 143 { 144 struct isa_softc *sc = device_private(self); 145 int rc; 146 147 if ((rc = config_detach_children(self, flags)) != 0) 148 return rc; 149 150 pmf_device_deregister(self); 151 152 isa_free_knowndevs(sc); 153 154 #if NISADMA > 0 155 isa_dmadestroy(sc->sc_ic); 156 #endif 157 isa_detach_hook(self); 158 159 return 0; 160 } 161 162 int 163 isarescan(device_t self, const char *ifattr, const int *locators) 164 { 165 int locs[ISACF_NLOCS]; 166 167 memcpy(locs, locators, sizeof(locs)); 168 169 /* 170 * XXX Bus independent code calling this function does not 171 * know the locator default values. It assumes "-1" for now. 172 * (should be made available by "config" one day) 173 * So fixup where the "-1" is not correct. 174 */ 175 if (locs[ISACF_SIZE] == -1) 176 locs[ISACF_SIZE] = ISACF_SIZE_DEFAULT; 177 if (locs[ISACF_IOSIZ] == -1) 178 locs[ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT; 179 180 config_search_loc(isasearch, self, ifattr, locs, NULL); 181 return (0); 182 } 183 184 void 185 isachilddetached(device_t self, device_t child) 186 { 187 struct isa_knowndev *ik; 188 struct isa_softc *sc = device_private(self); 189 190 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 191 if (ik->ik_claimed == child) 192 ik->ik_claimed = NULL; 193 } 194 } 195 196 void 197 isa_attach_knowndevs(struct isa_softc *sc) 198 { 199 struct isa_attach_args ia; 200 struct isa_knowndev *ik; 201 202 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 203 return; 204 205 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 206 if (ik->ik_claimed != NULL) 207 continue; 208 209 ia.ia_iot = sc->sc_iot; 210 ia.ia_memt = sc->sc_memt; 211 ia.ia_dmat = sc->sc_dmat; 212 ia.ia_ic = sc->sc_ic; 213 214 ia.ia_pnpname = ik->ik_pnpname; 215 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 216 217 ia.ia_io = ik->ik_io; 218 ia.ia_nio = ik->ik_nio; 219 220 ia.ia_iomem = ik->ik_iomem; 221 ia.ia_niomem = ik->ik_niomem; 222 223 ia.ia_irq = ik->ik_irq; 224 ia.ia_nirq = ik->ik_nirq; 225 226 ia.ia_drq = ik->ik_drq; 227 ia.ia_ndrq = ik->ik_ndrq; 228 229 ia.ia_aux = NULL; 230 231 /* XXX should setup locator array */ 232 233 ik->ik_claimed = config_found_sm_loc(sc->sc_dev, 234 "isa", 0, &ia, isaprint, isasubmatch); 235 } 236 } 237 238 void 239 isa_free_knowndevs(struct isa_softc *sc) 240 { 241 struct isa_knowndev *ik; 242 struct isa_pnpname *ipn; 243 244 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 245 246 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 247 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 248 FREEIT(ik->ik_pnpname); 249 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 250 ik->ik_pnpcompatnames = ipn->ipn_next; 251 free(ipn->ipn_name, M_DEVBUF); 252 free(ipn, M_DEVBUF); 253 } 254 FREEIT(ik->ik_io); 255 FREEIT(ik->ik_iomem); 256 FREEIT(ik->ik_irq); 257 FREEIT(ik->ik_drq); 258 free(ik, M_DEVBUF); 259 } 260 261 #undef FREEIT 262 } 263 264 static int 265 checkattachargs(struct isa_attach_args *ia, const int *loc) 266 { 267 int i; 268 269 if (ia->ia_nio == 0) { 270 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 271 return (0); 272 } else { 273 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 274 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 275 return (0); 276 } 277 278 if (ia->ia_niomem == 0) { 279 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 280 return (0); 281 } else { 282 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 283 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 284 return (0); 285 } 286 287 if (ia->ia_nirq == 0) { 288 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 289 return (0); 290 } else { 291 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 292 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 293 return (0); 294 } 295 296 if (ia->ia_ndrq == 0) { 297 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 298 return (0); 299 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 300 return (0); 301 } else { 302 for (i = 0; i < 2; i++) { 303 if (i == ia->ia_ndrq) 304 break; 305 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 306 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 307 return (0); 308 } 309 for (; i < 2; i++) { 310 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 311 return (0); 312 } 313 } 314 315 return (1); 316 } 317 318 int 319 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 320 { 321 struct isa_attach_args *ia = aux; 322 323 if (!checkattachargs(ia, cf->cf_loc)) 324 return (0); 325 326 return (config_match(parent, cf, aux)); 327 } 328 329 int 330 isaprint(void *aux, const char *isa) 331 { 332 struct isa_attach_args *ia = aux; 333 const char *sep; 334 int i; 335 336 /* 337 * This block of code only fires if we have a direct-config'd 338 * device for which there is no driver match. 339 */ 340 if (isa != NULL) { 341 struct isa_pnpname *ipn; 342 343 if (ia->ia_pnpname != NULL) 344 aprint_normal("%s", ia->ia_pnpname); 345 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 346 aprint_normal(" ("); /* ) */ 347 for (sep = ""; ipn != NULL; 348 ipn = ipn->ipn_next, sep = " ") { 349 aprint_normal("%s%s", sep, ipn->ipn_name); 350 } 351 /* ( */ aprint_normal(")"); 352 } 353 aprint_normal(" at %s", isa); 354 } 355 356 if (ia->ia_nio) { 357 sep = ""; 358 aprint_normal(" port "); 359 for (i = 0; i < ia->ia_nio; i++) { 360 if (ia->ia_io[i].ir_size == 0) 361 continue; 362 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 363 if (ia->ia_io[i].ir_size > 1) 364 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 365 ia->ia_io[i].ir_size - 1); 366 sep = ","; 367 } 368 } 369 370 if (ia->ia_niomem) { 371 sep = ""; 372 aprint_normal(" iomem "); 373 for (i = 0; i < ia->ia_niomem; i++) { 374 if (ia->ia_iomem[i].ir_size == 0) 375 continue; 376 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 377 if (ia->ia_iomem[i].ir_size > 1) 378 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 379 ia->ia_iomem[i].ir_size - 1); 380 sep = ","; 381 } 382 } 383 384 if (ia->ia_nirq) { 385 sep = ""; 386 aprint_normal(" irq "); 387 for (i = 0; i < ia->ia_nirq; i++) { 388 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 389 continue; 390 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 391 sep = ","; 392 } 393 } 394 395 if (ia->ia_ndrq) { 396 sep = ""; 397 aprint_normal(" drq "); 398 for (i = 0; i < ia->ia_ndrq; i++) { 399 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 400 continue; 401 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 402 sep = ","; 403 } 404 } 405 406 return (UNCONF); 407 } 408 409 int 410 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 411 { 412 struct isa_io res_io[1]; 413 struct isa_iomem res_mem[1]; 414 struct isa_irq res_irq[1]; 415 struct isa_drq res_drq[2]; 416 struct isa_softc *sc = device_private(parent); 417 struct isa_attach_args ia; 418 int flocs[ISACF_NLOCS]; 419 int tryagain; 420 421 do { 422 ia.ia_pnpname = NULL; 423 ia.ia_pnpcompatnames = NULL; 424 425 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 426 res_io[0].ir_size = 0; 427 428 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 429 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 430 431 res_irq[0].ir_irq = 432 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 433 434 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 435 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 436 437 ia.ia_iot = sc->sc_iot; 438 ia.ia_memt = sc->sc_memt; 439 ia.ia_dmat = sc->sc_dmat; 440 ia.ia_ic = sc->sc_ic; 441 442 ia.ia_io = res_io; 443 ia.ia_nio = 1; 444 445 ia.ia_iomem = res_mem; 446 ia.ia_niomem = 1; 447 448 ia.ia_irq = res_irq; 449 ia.ia_nirq = 1; 450 451 ia.ia_drq = res_drq; 452 ia.ia_ndrq = 2; 453 454 if (!checkattachargs(&ia, slocs)) 455 return (0); 456 457 tryagain = 0; 458 if (config_match(parent, cf, &ia) > 0) { 459 /* 460 * This is not necessary for detach, but might 461 * still be useful to collect device information. 462 */ 463 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 464 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 465 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 466 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 467 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 468 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 469 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 470 config_attach_loc(parent, cf, flocs, &ia, isaprint); 471 tryagain = (cf->cf_fstate == FSTATE_STAR); 472 } 473 } while (tryagain); 474 475 return (0); 476 } 477 478 const char * 479 isa_intr_typename(int type) 480 { 481 482 switch (type) { 483 case IST_NONE: 484 return ("none"); 485 case IST_PULSE: 486 return ("pulsed"); 487 case IST_EDGE: 488 return ("edge-triggered"); 489 case IST_LEVEL: 490 return ("level-triggered"); 491 default: 492 panic("isa_intr_typename: invalid type %d", type); 493 } 494 } 495 496 int 497 isa_get_slotcount(void) 498 { 499 500 return isa_slotcount; 501 } 502 503 void 504 isa_set_slotcount(int arg) 505 { 506 507 isa_slotcount = arg; 508 } 509
Indexes created Tue Sep 30 11:09:46 GMT 2025