1 /* $NetBSD: isa.c,v 1.140 2021/08/07 16:19:12 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 1.140 2021/08/07 16:19:12 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 CFARGS(.search = isasearch, 195 .locators = locs)); 196 return (0); 197 } 198 199 void 200 isachilddetached(device_t self, device_t child) 201 { 202 struct isa_knowndev *ik; 203 struct isa_softc *sc = device_private(self); 204 205 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 206 if (ik->ik_claimed == child) 207 ik->ik_claimed = NULL; 208 } 209 } 210 211 void 212 isa_attach_knowndevs(struct isa_softc *sc) 213 { 214 struct isa_attach_args ia; 215 struct isa_knowndev *ik; 216 217 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 218 return; 219 220 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 221 if (ik->ik_claimed != NULL) 222 continue; 223 224 ia.ia_iot = sc->sc_iot; 225 ia.ia_memt = sc->sc_memt; 226 ia.ia_dmat = sc->sc_dmat; 227 ia.ia_ic = sc->sc_ic; 228 229 ia.ia_pnpname = ik->ik_pnpname; 230 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 231 232 ia.ia_io = ik->ik_io; 233 ia.ia_nio = ik->ik_nio; 234 235 ia.ia_iomem = ik->ik_iomem; 236 ia.ia_niomem = ik->ik_niomem; 237 238 ia.ia_irq = ik->ik_irq; 239 ia.ia_nirq = ik->ik_nirq; 240 241 ia.ia_drq = ik->ik_drq; 242 ia.ia_ndrq = ik->ik_ndrq; 243 244 ia.ia_aux = NULL; 245 246 /* XXX should setup locator array */ 247 248 ik->ik_claimed = config_found(sc->sc_dev, &ia, isaprint, 249 CFARGS(.submatch = isasubmatch)); 250 } 251 } 252 253 void 254 isa_free_knowndevs(struct isa_softc *sc) 255 { 256 struct isa_knowndev *ik; 257 struct isa_pnpname *ipn; 258 259 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 260 261 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 262 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 263 FREEIT(ik->ik_pnpname); 264 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 265 ik->ik_pnpcompatnames = ipn->ipn_next; 266 free(ipn->ipn_name, M_DEVBUF); 267 free(ipn, M_DEVBUF); 268 } 269 FREEIT(ik->ik_io); 270 FREEIT(ik->ik_iomem); 271 FREEIT(ik->ik_irq); 272 FREEIT(ik->ik_drq); 273 free(ik, M_DEVBUF); 274 } 275 276 #undef FREEIT 277 } 278 279 static int 280 checkattachargs(struct isa_attach_args *ia, const int *loc) 281 { 282 int i; 283 284 if (ia->ia_nio == 0) { 285 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 286 return (0); 287 } else { 288 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 289 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 290 return (0); 291 } 292 293 if (ia->ia_niomem == 0) { 294 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 295 return (0); 296 } else { 297 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 298 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 299 return (0); 300 } 301 302 if (ia->ia_nirq == 0) { 303 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 304 return (0); 305 } else { 306 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 307 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 308 return (0); 309 } 310 311 if (ia->ia_ndrq == 0) { 312 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 313 return (0); 314 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 315 return (0); 316 } else { 317 for (i = 0; i < 2; i++) { 318 if (i == ia->ia_ndrq) 319 break; 320 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 321 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 322 return (0); 323 } 324 for (; i < 2; i++) { 325 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 326 return (0); 327 } 328 } 329 330 return (1); 331 } 332 333 int 334 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 335 { 336 struct isa_attach_args *ia = aux; 337 338 if (!checkattachargs(ia, cf->cf_loc)) 339 return (0); 340 341 return (config_match(parent, cf, aux)); 342 } 343 344 int 345 isaprint(void *aux, const char *isa) 346 { 347 struct isa_attach_args *ia = aux; 348 const char *sep; 349 int i; 350 351 /* 352 * This block of code only fires if we have a direct-config'd 353 * device for which there is no driver match. 354 */ 355 if (isa != NULL) { 356 struct isa_pnpname *ipn; 357 358 if (ia->ia_pnpname != NULL) 359 aprint_normal("%s", ia->ia_pnpname); 360 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 361 aprint_normal(" ("); /* ) */ 362 for (sep = ""; ipn != NULL; 363 ipn = ipn->ipn_next, sep = " ") { 364 aprint_normal("%s%s", sep, ipn->ipn_name); 365 } 366 /* ( */ aprint_normal(")"); 367 } 368 aprint_normal(" at %s", isa); 369 } 370 371 if (ia->ia_nio) { 372 sep = ""; 373 aprint_normal(" port "); 374 for (i = 0; i < ia->ia_nio; i++) { 375 if (ia->ia_io[i].ir_size == 0) 376 continue; 377 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 378 if (ia->ia_io[i].ir_size > 1) 379 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 380 ia->ia_io[i].ir_size - 1); 381 sep = ","; 382 } 383 } 384 385 if (ia->ia_niomem) { 386 sep = ""; 387 aprint_normal(" iomem "); 388 for (i = 0; i < ia->ia_niomem; i++) { 389 if (ia->ia_iomem[i].ir_size == 0) 390 continue; 391 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 392 if (ia->ia_iomem[i].ir_size > 1) 393 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 394 ia->ia_iomem[i].ir_size - 1); 395 sep = ","; 396 } 397 } 398 399 if (ia->ia_nirq) { 400 sep = ""; 401 aprint_normal(" irq "); 402 for (i = 0; i < ia->ia_nirq; i++) { 403 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 404 continue; 405 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 406 sep = ","; 407 } 408 } 409 410 if (ia->ia_ndrq) { 411 sep = ""; 412 aprint_normal(" drq "); 413 for (i = 0; i < ia->ia_ndrq; i++) { 414 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 415 continue; 416 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 417 sep = ","; 418 } 419 } 420 421 return (UNCONF); 422 } 423 424 int 425 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 426 { 427 struct isa_io res_io[1]; 428 struct isa_iomem res_mem[1]; 429 struct isa_irq res_irq[1]; 430 struct isa_drq res_drq[2]; 431 struct isa_softc *sc = device_private(parent); 432 struct isa_attach_args ia; 433 int flocs[ISACF_NLOCS]; 434 int tryagain; 435 436 do { 437 ia.ia_pnpname = NULL; 438 ia.ia_pnpcompatnames = NULL; 439 440 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 441 res_io[0].ir_size = 0; 442 443 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 444 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 445 446 res_irq[0].ir_irq = 447 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 448 449 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 450 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 451 452 ia.ia_iot = sc->sc_iot; 453 ia.ia_memt = sc->sc_memt; 454 ia.ia_dmat = sc->sc_dmat; 455 ia.ia_ic = sc->sc_ic; 456 457 ia.ia_io = res_io; 458 ia.ia_nio = 1; 459 460 ia.ia_iomem = res_mem; 461 ia.ia_niomem = 1; 462 463 ia.ia_irq = res_irq; 464 ia.ia_nirq = 1; 465 466 ia.ia_drq = res_drq; 467 ia.ia_ndrq = 2; 468 469 if (!checkattachargs(&ia, slocs)) 470 return (0); 471 472 tryagain = 0; 473 if (config_probe(parent, cf, &ia)) { 474 /* 475 * This is not necessary for detach, but might 476 * still be useful to collect device information. 477 */ 478 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 479 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 480 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 481 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 482 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 483 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 484 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 485 config_attach(parent, cf, &ia, isaprint, 486 CFARGS(.locators = flocs)); 487 tryagain = (cf->cf_fstate == FSTATE_STAR); 488 } 489 } while (tryagain); 490 491 return (0); 492 } 493 494 const char * 495 isa_intr_typename(int type) 496 { 497 498 switch (type) { 499 case IST_NONE: 500 return ("none"); 501 case IST_PULSE: 502 return ("pulsed"); 503 case IST_EDGE: 504 return ("edge-triggered"); 505 case IST_LEVEL: 506 return ("level-triggered"); 507 default: 508 panic("isa_intr_typename: invalid type %d", type); 509 } 510 } 511 512 int 513 isa_get_slotcount(void) 514 { 515 516 return isa_slotcount; 517 } 518 519 void 520 isa_set_slotcount(int arg) 521 { 522 523 isa_slotcount = arg; 524 } 525
Indexes created Sat Sep 27 22:09:54 GMT 2025