isa.c revision 1.138.18.1
1 /* $NetBSD: isa.c,v 1.138.18.1 2012/09/12 06:15:32 tls 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 1.138.18.1 2012/09/12 06:15:32 tls 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 /* Clamp the maximum transfer size. The hook may clamp it further. */ 95 self->dv_maxphys = MIN(parent->dv_maxphys, 64 * 1024); 96 97 TAILQ_INIT(&sc->sc_knowndevs); 98 sc->sc_dynamicdevs = 0; 99 100 sc->sc_dev = self; 101 102 isa_attach_hook(parent, self, iba); 103 aprint_naive("\n"); 104 aprint_normal("\n"); 105 106 /* XXX Add code to fetch known-devices. */ 107 108 sc->sc_iot = iba->iba_iot; 109 sc->sc_memt = iba->iba_memt; 110 sc->sc_dmat = iba->iba_dmat; 111 sc->sc_ic = iba->iba_ic; 112 113 #if NISAPNP > 0 114 /* 115 * Reset isapnp cards that the bios configured for us 116 */ 117 isapnp_isa_attach_hook(sc); 118 #endif 119 120 #if NISADMA > 0 121 /* 122 * Initialize our DMA state. 123 */ 124 isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self); 125 #endif 126 127 /* Attach all direct-config children. */ 128 isa_attach_knowndevs(sc); 129 130 /* 131 * If we don't support dynamic hello/goodbye of devices, 132 * then free the knowndevs info now. 133 */ 134 if (sc->sc_dynamicdevs == 0) 135 isa_free_knowndevs(sc); 136 137 /* Attach all indirect-config children. */ 138 isarescan(self, "isa", wildcard); 139 140 if (!pmf_device_register(self, NULL, NULL)) 141 aprint_error_dev(self, "couldn't establish power handler\n"); 142 } 143 144 int 145 isadetach(device_t self, int flags) 146 { 147 struct isa_softc *sc = device_private(self); 148 int rc; 149 150 if ((rc = config_detach_children(self, flags)) != 0) 151 return rc; 152 153 pmf_device_deregister(self); 154 155 isa_free_knowndevs(sc); 156 157 #if NISADMA > 0 158 isa_dmadestroy(sc->sc_ic); 159 #endif 160 isa_detach_hook(sc->sc_ic, self); 161 162 return 0; 163 } 164 165 int 166 isarescan(device_t self, const char *ifattr, const int *locators) 167 { 168 prop_dictionary_t dict; 169 int locs[ISACF_NLOCS]; 170 bool no_legacy_devices = false; 171 172 dict = device_properties(self); 173 if (prop_dictionary_get_bool(dict, "no-legacy-devices", 174 &no_legacy_devices) == true) { 175 aprint_debug_dev(self, "platform reports no legacy devices\n"); 176 return 0; 177 } 178 179 memcpy(locs, locators, sizeof(locs)); 180 181 /* 182 * XXX Bus independent code calling this function does not 183 * know the locator default values. It assumes "-1" for now. 184 * (should be made available by "config" one day) 185 * So fixup where the "-1" is not correct. 186 */ 187 if (locs[ISACF_SIZE] == -1) 188 locs[ISACF_SIZE] = ISACF_SIZE_DEFAULT; 189 if (locs[ISACF_IOSIZ] == -1) 190 locs[ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT; 191 192 config_search_loc(isasearch, self, ifattr, locs, NULL); 193 return (0); 194 } 195 196 void 197 isachilddetached(device_t self, device_t child) 198 { 199 struct isa_knowndev *ik; 200 struct isa_softc *sc = device_private(self); 201 202 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 203 if (ik->ik_claimed == child) 204 ik->ik_claimed = NULL; 205 } 206 } 207 208 void 209 isa_attach_knowndevs(struct isa_softc *sc) 210 { 211 struct isa_attach_args ia; 212 struct isa_knowndev *ik; 213 214 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 215 return; 216 217 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 218 if (ik->ik_claimed != NULL) 219 continue; 220 221 ia.ia_iot = sc->sc_iot; 222 ia.ia_memt = sc->sc_memt; 223 ia.ia_dmat = sc->sc_dmat; 224 ia.ia_ic = sc->sc_ic; 225 226 ia.ia_pnpname = ik->ik_pnpname; 227 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 228 229 ia.ia_io = ik->ik_io; 230 ia.ia_nio = ik->ik_nio; 231 232 ia.ia_iomem = ik->ik_iomem; 233 ia.ia_niomem = ik->ik_niomem; 234 235 ia.ia_irq = ik->ik_irq; 236 ia.ia_nirq = ik->ik_nirq; 237 238 ia.ia_drq = ik->ik_drq; 239 ia.ia_ndrq = ik->ik_ndrq; 240 241 ia.ia_aux = NULL; 242 243 /* XXX should setup locator array */ 244 245 ik->ik_claimed = config_found_sm_loc(sc->sc_dev, 246 "isa", 0, &ia, isaprint, isasubmatch); 247 } 248 } 249 250 void 251 isa_free_knowndevs(struct isa_softc *sc) 252 { 253 struct isa_knowndev *ik; 254 struct isa_pnpname *ipn; 255 256 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 257 258 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 259 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 260 FREEIT(ik->ik_pnpname); 261 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 262 ik->ik_pnpcompatnames = ipn->ipn_next; 263 free(ipn->ipn_name, M_DEVBUF); 264 free(ipn, M_DEVBUF); 265 } 266 FREEIT(ik->ik_io); 267 FREEIT(ik->ik_iomem); 268 FREEIT(ik->ik_irq); 269 FREEIT(ik->ik_drq); 270 free(ik, M_DEVBUF); 271 } 272 273 #undef FREEIT 274 } 275 276 static int 277 checkattachargs(struct isa_attach_args *ia, const int *loc) 278 { 279 int i; 280 281 if (ia->ia_nio == 0) { 282 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 283 return (0); 284 } else { 285 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 286 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 287 return (0); 288 } 289 290 if (ia->ia_niomem == 0) { 291 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 292 return (0); 293 } else { 294 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 295 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 296 return (0); 297 } 298 299 if (ia->ia_nirq == 0) { 300 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 301 return (0); 302 } else { 303 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 304 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 305 return (0); 306 } 307 308 if (ia->ia_ndrq == 0) { 309 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 310 return (0); 311 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 312 return (0); 313 } else { 314 for (i = 0; i < 2; i++) { 315 if (i == ia->ia_ndrq) 316 break; 317 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 318 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 319 return (0); 320 } 321 for (; i < 2; i++) { 322 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 323 return (0); 324 } 325 } 326 327 return (1); 328 } 329 330 int 331 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 332 { 333 struct isa_attach_args *ia = aux; 334 335 if (!checkattachargs(ia, cf->cf_loc)) 336 return (0); 337 338 return (config_match(parent, cf, aux)); 339 } 340 341 int 342 isaprint(void *aux, const char *isa) 343 { 344 struct isa_attach_args *ia = aux; 345 const char *sep; 346 int i; 347 348 /* 349 * This block of code only fires if we have a direct-config'd 350 * device for which there is no driver match. 351 */ 352 if (isa != NULL) { 353 struct isa_pnpname *ipn; 354 355 if (ia->ia_pnpname != NULL) 356 aprint_normal("%s", ia->ia_pnpname); 357 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 358 aprint_normal(" ("); /* ) */ 359 for (sep = ""; ipn != NULL; 360 ipn = ipn->ipn_next, sep = " ") { 361 aprint_normal("%s%s", sep, ipn->ipn_name); 362 } 363 /* ( */ aprint_normal(")"); 364 } 365 aprint_normal(" at %s", isa); 366 } 367 368 if (ia->ia_nio) { 369 sep = ""; 370 aprint_normal(" port "); 371 for (i = 0; i < ia->ia_nio; i++) { 372 if (ia->ia_io[i].ir_size == 0) 373 continue; 374 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 375 if (ia->ia_io[i].ir_size > 1) 376 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 377 ia->ia_io[i].ir_size - 1); 378 sep = ","; 379 } 380 } 381 382 if (ia->ia_niomem) { 383 sep = ""; 384 aprint_normal(" iomem "); 385 for (i = 0; i < ia->ia_niomem; i++) { 386 if (ia->ia_iomem[i].ir_size == 0) 387 continue; 388 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 389 if (ia->ia_iomem[i].ir_size > 1) 390 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 391 ia->ia_iomem[i].ir_size - 1); 392 sep = ","; 393 } 394 } 395 396 if (ia->ia_nirq) { 397 sep = ""; 398 aprint_normal(" irq "); 399 for (i = 0; i < ia->ia_nirq; i++) { 400 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 401 continue; 402 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 403 sep = ","; 404 } 405 } 406 407 if (ia->ia_ndrq) { 408 sep = ""; 409 aprint_normal(" drq "); 410 for (i = 0; i < ia->ia_ndrq; i++) { 411 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 412 continue; 413 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 414 sep = ","; 415 } 416 } 417 418 return (UNCONF); 419 } 420 421 int 422 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 423 { 424 struct isa_io res_io[1]; 425 struct isa_iomem res_mem[1]; 426 struct isa_irq res_irq[1]; 427 struct isa_drq res_drq[2]; 428 struct isa_softc *sc = device_private(parent); 429 struct isa_attach_args ia; 430 int flocs[ISACF_NLOCS]; 431 int tryagain; 432 433 do { 434 ia.ia_pnpname = NULL; 435 ia.ia_pnpcompatnames = NULL; 436 437 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 438 res_io[0].ir_size = 0; 439 440 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 441 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 442 443 res_irq[0].ir_irq = 444 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 445 446 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 447 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 448 449 ia.ia_iot = sc->sc_iot; 450 ia.ia_memt = sc->sc_memt; 451 ia.ia_dmat = sc->sc_dmat; 452 ia.ia_ic = sc->sc_ic; 453 454 ia.ia_io = res_io; 455 ia.ia_nio = 1; 456 457 ia.ia_iomem = res_mem; 458 ia.ia_niomem = 1; 459 460 ia.ia_irq = res_irq; 461 ia.ia_nirq = 1; 462 463 ia.ia_drq = res_drq; 464 ia.ia_ndrq = 2; 465 466 if (!checkattachargs(&ia, slocs)) 467 return (0); 468 469 tryagain = 0; 470 if (config_match(parent, cf, &ia) > 0) { 471 /* 472 * This is not necessary for detach, but might 473 * still be useful to collect device information. 474 */ 475 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 476 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 477 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 478 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 479 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 480 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 481 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 482 config_attach_loc(parent, cf, flocs, &ia, isaprint); 483 tryagain = (cf->cf_fstate == FSTATE_STAR); 484 } 485 } while (tryagain); 486 487 return (0); 488 } 489 490 const char * 491 isa_intr_typename(int type) 492 { 493 494 switch (type) { 495 case IST_NONE: 496 return ("none"); 497 case IST_PULSE: 498 return ("pulsed"); 499 case IST_EDGE: 500 return ("edge-triggered"); 501 case IST_LEVEL: 502 return ("level-triggered"); 503 default: 504 panic("isa_intr_typename: invalid type %d", type); 505 } 506 } 507 508 int 509 isa_get_slotcount(void) 510 { 511 512 return isa_slotcount; 513 } 514 515 void 516 isa_set_slotcount(int arg) 517 { 518 519 isa_slotcount = arg; 520 } 521
Indexes created Thu Oct 02 01:09:59 GMT 2025