isa.c revision 1.139
1 /* $NetBSD: isa.c,v 1.139 2021/04/24 23:36:55 thorpej 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 1.139 2021/04/24 23:36:55 thorpej 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] = ISACF_PORT_DEFAULT, 90 [ISACF_SIZE] = ISACF_SIZE_DEFAULT, 91 [ISACF_IOMEM] = ISACF_IOMEM_DEFAULT, 92 [ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT, 93 [ISACF_IRQ] = ISACF_IRQ_DEFAULT, 94 [ISACF_DRQ] = ISACF_DRQ_DEFAULT, 95 [ISACF_DRQ2] = ISACF_DRQ2_DEFAULT, 96 }; 97 98 TAILQ_INIT(&sc->sc_knowndevs); 99 sc->sc_dynamicdevs = 0; 100 101 sc->sc_dev = self; 102 103 isa_attach_hook(parent, self, iba); 104 aprint_naive("\n"); 105 aprint_normal("\n"); 106 107 /* XXX Add code to fetch known-devices. */ 108 109 sc->sc_iot = iba->iba_iot; 110 sc->sc_memt = iba->iba_memt; 111 sc->sc_dmat = iba->iba_dmat; 112 sc->sc_ic = iba->iba_ic; 113 114 #if NISAPNP > 0 115 /* 116 * Reset isapnp cards that the bios configured for us 117 */ 118 isapnp_isa_attach_hook(sc); 119 #endif 120 121 #if NISADMA > 0 122 /* 123 * Initialize our DMA state. 124 */ 125 isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self); 126 #endif 127 128 /* Attach all direct-config children. */ 129 isa_attach_knowndevs(sc); 130 131 /* 132 * If we don't support dynamic hello/goodbye of devices, 133 * then free the knowndevs info now. 134 */ 135 if (sc->sc_dynamicdevs == 0) 136 isa_free_knowndevs(sc); 137 138 /* Attach all indirect-config children. */ 139 isarescan(self, NULL, wildcard); 140 141 if (!pmf_device_register(self, NULL, NULL)) 142 aprint_error_dev(self, "couldn't establish power handler\n"); 143 } 144 145 int 146 isadetach(device_t self, int flags) 147 { 148 struct isa_softc *sc = device_private(self); 149 int rc; 150 151 if ((rc = config_detach_children(self, flags)) != 0) 152 return rc; 153 154 pmf_device_deregister(self); 155 156 isa_free_knowndevs(sc); 157 158 #if NISADMA > 0 159 isa_dmadestroy(sc->sc_ic); 160 #endif 161 isa_detach_hook(sc->sc_ic, self); 162 163 return 0; 164 } 165 166 int 167 isarescan(device_t self, const char *ifattr, const int *locators) 168 { 169 prop_dictionary_t dict; 170 int locs[ISACF_NLOCS]; 171 bool no_legacy_devices = false; 172 173 dict = device_properties(self); 174 if (prop_dictionary_get_bool(dict, "no-legacy-devices", 175 &no_legacy_devices) == true) { 176 aprint_debug_dev(self, "platform reports no legacy devices\n"); 177 return 0; 178 } 179 180 memcpy(locs, locators, sizeof(locs)); 181 182 /* 183 * XXX Bus independent code calling this function does not 184 * know the locator default values. It assumes "-1" for now. 185 * (should be made available by "config" one day) 186 * So fixup where the "-1" is not correct. 187 */ 188 if (locs[ISACF_SIZE] == -1) 189 locs[ISACF_SIZE] = ISACF_SIZE_DEFAULT; 190 if (locs[ISACF_IOSIZ] == -1) 191 locs[ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT; 192 193 config_search(self, NULL, 194 CFARG_SEARCH, isasearch, 195 CFARG_LOCATORS, locs, 196 CFARG_EOL); 197 return (0); 198 } 199 200 void 201 isachilddetached(device_t self, device_t child) 202 { 203 struct isa_knowndev *ik; 204 struct isa_softc *sc = device_private(self); 205 206 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 207 if (ik->ik_claimed == child) 208 ik->ik_claimed = NULL; 209 } 210 } 211 212 void 213 isa_attach_knowndevs(struct isa_softc *sc) 214 { 215 struct isa_attach_args ia; 216 struct isa_knowndev *ik; 217 218 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 219 return; 220 221 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 222 if (ik->ik_claimed != NULL) 223 continue; 224 225 ia.ia_iot = sc->sc_iot; 226 ia.ia_memt = sc->sc_memt; 227 ia.ia_dmat = sc->sc_dmat; 228 ia.ia_ic = sc->sc_ic; 229 230 ia.ia_pnpname = ik->ik_pnpname; 231 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 232 233 ia.ia_io = ik->ik_io; 234 ia.ia_nio = ik->ik_nio; 235 236 ia.ia_iomem = ik->ik_iomem; 237 ia.ia_niomem = ik->ik_niomem; 238 239 ia.ia_irq = ik->ik_irq; 240 ia.ia_nirq = ik->ik_nirq; 241 242 ia.ia_drq = ik->ik_drq; 243 ia.ia_ndrq = ik->ik_ndrq; 244 245 ia.ia_aux = NULL; 246 247 /* XXX should setup locator array */ 248 249 ik->ik_claimed = config_found(sc->sc_dev, &ia, isaprint, 250 CFARG_SUBMATCH, isasubmatch, 251 CFARG_EOL); 252 } 253 } 254 255 void 256 isa_free_knowndevs(struct isa_softc *sc) 257 { 258 struct isa_knowndev *ik; 259 struct isa_pnpname *ipn; 260 261 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 262 263 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 264 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 265 FREEIT(ik->ik_pnpname); 266 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 267 ik->ik_pnpcompatnames = ipn->ipn_next; 268 free(ipn->ipn_name, M_DEVBUF); 269 free(ipn, M_DEVBUF); 270 } 271 FREEIT(ik->ik_io); 272 FREEIT(ik->ik_iomem); 273 FREEIT(ik->ik_irq); 274 FREEIT(ik->ik_drq); 275 free(ik, M_DEVBUF); 276 } 277 278 #undef FREEIT 279 } 280 281 static int 282 checkattachargs(struct isa_attach_args *ia, const int *loc) 283 { 284 int i; 285 286 if (ia->ia_nio == 0) { 287 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 288 return (0); 289 } else { 290 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 291 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 292 return (0); 293 } 294 295 if (ia->ia_niomem == 0) { 296 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 297 return (0); 298 } else { 299 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 300 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 301 return (0); 302 } 303 304 if (ia->ia_nirq == 0) { 305 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 306 return (0); 307 } else { 308 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 309 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 310 return (0); 311 } 312 313 if (ia->ia_ndrq == 0) { 314 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 315 return (0); 316 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 317 return (0); 318 } else { 319 for (i = 0; i < 2; i++) { 320 if (i == ia->ia_ndrq) 321 break; 322 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 323 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 324 return (0); 325 } 326 for (; i < 2; i++) { 327 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 328 return (0); 329 } 330 } 331 332 return (1); 333 } 334 335 int 336 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 337 { 338 struct isa_attach_args *ia = aux; 339 340 if (!checkattachargs(ia, cf->cf_loc)) 341 return (0); 342 343 return (config_match(parent, cf, aux)); 344 } 345 346 int 347 isaprint(void *aux, const char *isa) 348 { 349 struct isa_attach_args *ia = aux; 350 const char *sep; 351 int i; 352 353 /* 354 * This block of code only fires if we have a direct-config'd 355 * device for which there is no driver match. 356 */ 357 if (isa != NULL) { 358 struct isa_pnpname *ipn; 359 360 if (ia->ia_pnpname != NULL) 361 aprint_normal("%s", ia->ia_pnpname); 362 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 363 aprint_normal(" ("); /* ) */ 364 for (sep = ""; ipn != NULL; 365 ipn = ipn->ipn_next, sep = " ") { 366 aprint_normal("%s%s", sep, ipn->ipn_name); 367 } 368 /* ( */ aprint_normal(")"); 369 } 370 aprint_normal(" at %s", isa); 371 } 372 373 if (ia->ia_nio) { 374 sep = ""; 375 aprint_normal(" port "); 376 for (i = 0; i < ia->ia_nio; i++) { 377 if (ia->ia_io[i].ir_size == 0) 378 continue; 379 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 380 if (ia->ia_io[i].ir_size > 1) 381 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 382 ia->ia_io[i].ir_size - 1); 383 sep = ","; 384 } 385 } 386 387 if (ia->ia_niomem) { 388 sep = ""; 389 aprint_normal(" iomem "); 390 for (i = 0; i < ia->ia_niomem; i++) { 391 if (ia->ia_iomem[i].ir_size == 0) 392 continue; 393 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 394 if (ia->ia_iomem[i].ir_size > 1) 395 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 396 ia->ia_iomem[i].ir_size - 1); 397 sep = ","; 398 } 399 } 400 401 if (ia->ia_nirq) { 402 sep = ""; 403 aprint_normal(" irq "); 404 for (i = 0; i < ia->ia_nirq; i++) { 405 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 406 continue; 407 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 408 sep = ","; 409 } 410 } 411 412 if (ia->ia_ndrq) { 413 sep = ""; 414 aprint_normal(" drq "); 415 for (i = 0; i < ia->ia_ndrq; i++) { 416 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 417 continue; 418 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 419 sep = ","; 420 } 421 } 422 423 return (UNCONF); 424 } 425 426 int 427 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 428 { 429 struct isa_io res_io[1]; 430 struct isa_iomem res_mem[1]; 431 struct isa_irq res_irq[1]; 432 struct isa_drq res_drq[2]; 433 struct isa_softc *sc = device_private(parent); 434 struct isa_attach_args ia; 435 int flocs[ISACF_NLOCS]; 436 int tryagain; 437 438 do { 439 ia.ia_pnpname = NULL; 440 ia.ia_pnpcompatnames = NULL; 441 442 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 443 res_io[0].ir_size = 0; 444 445 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 446 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 447 448 res_irq[0].ir_irq = 449 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 450 451 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 452 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 453 454 ia.ia_iot = sc->sc_iot; 455 ia.ia_memt = sc->sc_memt; 456 ia.ia_dmat = sc->sc_dmat; 457 ia.ia_ic = sc->sc_ic; 458 459 ia.ia_io = res_io; 460 ia.ia_nio = 1; 461 462 ia.ia_iomem = res_mem; 463 ia.ia_niomem = 1; 464 465 ia.ia_irq = res_irq; 466 ia.ia_nirq = 1; 467 468 ia.ia_drq = res_drq; 469 ia.ia_ndrq = 2; 470 471 if (!checkattachargs(&ia, slocs)) 472 return (0); 473 474 tryagain = 0; 475 if (config_probe(parent, cf, &ia)) { 476 /* 477 * This is not necessary for detach, but might 478 * still be useful to collect device information. 479 */ 480 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 481 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 482 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 483 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 484 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 485 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 486 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 487 config_attach(parent, cf, &ia, isaprint, 488 CFARG_LOCATORS, flocs, 489 CFARG_EOL); 490 tryagain = (cf->cf_fstate == FSTATE_STAR); 491 } 492 } while (tryagain); 493 494 return (0); 495 } 496 497 const char * 498 isa_intr_typename(int type) 499 { 500 501 switch (type) { 502 case IST_NONE: 503 return ("none"); 504 case IST_PULSE: 505 return ("pulsed"); 506 case IST_EDGE: 507 return ("edge-triggered"); 508 case IST_LEVEL: 509 return ("level-triggered"); 510 default: 511 panic("isa_intr_typename: invalid type %d", type); 512 } 513 } 514 515 int 516 isa_get_slotcount(void) 517 { 518 519 return isa_slotcount; 520 } 521 522 void 523 isa_set_slotcount(int arg) 524 { 525 526 isa_slotcount = arg; 527 } 528
Indexes created Tue Sep 30 11:09:46 GMT 2025