1 /* $NetBSD: isa.c,v 1.141 2025/10/03 14:14:36 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 1.141 2025/10/03 14:14:36 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 int locs[ISACF_NLOCS]; 170 171 if (device_getprop_bool(self, "no-legacy-devices")) { 172 aprint_debug_dev(self, "platform reports no legacy devices\n"); 173 return 0; 174 } 175 176 memcpy(locs, locators, sizeof(locs)); 177 178 /* 179 * XXX Bus independent code calling this function does not 180 * know the locator default values. It assumes "-1" for now. 181 * (should be made available by "config" one day) 182 * So fixup where the "-1" is not correct. 183 */ 184 if (locs[ISACF_SIZE] == -1) 185 locs[ISACF_SIZE] = ISACF_SIZE_DEFAULT; 186 if (locs[ISACF_IOSIZ] == -1) 187 locs[ISACF_IOSIZ] = ISACF_IOSIZ_DEFAULT; 188 189 config_search(self, NULL, 190 CFARGS(.search = isasearch, 191 .locators = locs)); 192 return (0); 193 } 194 195 void 196 isachilddetached(device_t self, device_t child) 197 { 198 struct isa_knowndev *ik; 199 struct isa_softc *sc = device_private(self); 200 201 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 202 if (ik->ik_claimed == child) 203 ik->ik_claimed = NULL; 204 } 205 } 206 207 void 208 isa_attach_knowndevs(struct isa_softc *sc) 209 { 210 struct isa_attach_args ia; 211 struct isa_knowndev *ik; 212 213 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 214 return; 215 216 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 217 if (ik->ik_claimed != NULL) 218 continue; 219 220 ia.ia_iot = sc->sc_iot; 221 ia.ia_memt = sc->sc_memt; 222 ia.ia_dmat = sc->sc_dmat; 223 ia.ia_ic = sc->sc_ic; 224 225 ia.ia_pnpname = ik->ik_pnpname; 226 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 227 228 ia.ia_io = ik->ik_io; 229 ia.ia_nio = ik->ik_nio; 230 231 ia.ia_iomem = ik->ik_iomem; 232 ia.ia_niomem = ik->ik_niomem; 233 234 ia.ia_irq = ik->ik_irq; 235 ia.ia_nirq = ik->ik_nirq; 236 237 ia.ia_drq = ik->ik_drq; 238 ia.ia_ndrq = ik->ik_ndrq; 239 240 ia.ia_aux = NULL; 241 242 /* XXX should setup locator array */ 243 244 ik->ik_claimed = config_found(sc->sc_dev, &ia, isaprint, 245 CFARGS(.submatch = isasubmatch)); 246 } 247 } 248 249 void 250 isa_free_knowndevs(struct isa_softc *sc) 251 { 252 struct isa_knowndev *ik; 253 struct isa_pnpname *ipn; 254 255 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 256 257 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 258 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 259 FREEIT(ik->ik_pnpname); 260 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 261 ik->ik_pnpcompatnames = ipn->ipn_next; 262 free(ipn->ipn_name, M_DEVBUF); 263 free(ipn, M_DEVBUF); 264 } 265 FREEIT(ik->ik_io); 266 FREEIT(ik->ik_iomem); 267 FREEIT(ik->ik_irq); 268 FREEIT(ik->ik_drq); 269 free(ik, M_DEVBUF); 270 } 271 272 #undef FREEIT 273 } 274 275 static int 276 checkattachargs(struct isa_attach_args *ia, const int *loc) 277 { 278 int i; 279 280 if (ia->ia_nio == 0) { 281 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 282 return (0); 283 } else { 284 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 285 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 286 return (0); 287 } 288 289 if (ia->ia_niomem == 0) { 290 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 291 return (0); 292 } else { 293 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 294 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 295 return (0); 296 } 297 298 if (ia->ia_nirq == 0) { 299 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 300 return (0); 301 } else { 302 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 303 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 304 return (0); 305 } 306 307 if (ia->ia_ndrq == 0) { 308 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 309 return (0); 310 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 311 return (0); 312 } else { 313 for (i = 0; i < 2; i++) { 314 if (i == ia->ia_ndrq) 315 break; 316 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 317 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 318 return (0); 319 } 320 for (; i < 2; i++) { 321 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 322 return (0); 323 } 324 } 325 326 return (1); 327 } 328 329 int 330 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 331 { 332 struct isa_attach_args *ia = aux; 333 334 if (!checkattachargs(ia, cf->cf_loc)) 335 return (0); 336 337 return (config_match(parent, cf, aux)); 338 } 339 340 int 341 isaprint(void *aux, const char *isa) 342 { 343 struct isa_attach_args *ia = aux; 344 const char *sep; 345 int i; 346 347 /* 348 * This block of code only fires if we have a direct-config'd 349 * device for which there is no driver match. 350 */ 351 if (isa != NULL) { 352 struct isa_pnpname *ipn; 353 354 if (ia->ia_pnpname != NULL) 355 aprint_normal("%s", ia->ia_pnpname); 356 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 357 aprint_normal(" ("); /* ) */ 358 for (sep = ""; ipn != NULL; 359 ipn = ipn->ipn_next, sep = " ") { 360 aprint_normal("%s%s", sep, ipn->ipn_name); 361 } 362 /* ( */ aprint_normal(")"); 363 } 364 aprint_normal(" at %s", isa); 365 } 366 367 if (ia->ia_nio) { 368 sep = ""; 369 aprint_normal(" port "); 370 for (i = 0; i < ia->ia_nio; i++) { 371 if (ia->ia_io[i].ir_size == 0) 372 continue; 373 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 374 if (ia->ia_io[i].ir_size > 1) 375 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 376 ia->ia_io[i].ir_size - 1); 377 sep = ","; 378 } 379 } 380 381 if (ia->ia_niomem) { 382 sep = ""; 383 aprint_normal(" iomem "); 384 for (i = 0; i < ia->ia_niomem; i++) { 385 if (ia->ia_iomem[i].ir_size == 0) 386 continue; 387 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 388 if (ia->ia_iomem[i].ir_size > 1) 389 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 390 ia->ia_iomem[i].ir_size - 1); 391 sep = ","; 392 } 393 } 394 395 if (ia->ia_nirq) { 396 sep = ""; 397 aprint_normal(" irq "); 398 for (i = 0; i < ia->ia_nirq; i++) { 399 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 400 continue; 401 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 402 sep = ","; 403 } 404 } 405 406 if (ia->ia_ndrq) { 407 sep = ""; 408 aprint_normal(" drq "); 409 for (i = 0; i < ia->ia_ndrq; i++) { 410 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 411 continue; 412 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 413 sep = ","; 414 } 415 } 416 417 return (UNCONF); 418 } 419 420 int 421 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 422 { 423 struct isa_io res_io[1]; 424 struct isa_iomem res_mem[1]; 425 struct isa_irq res_irq[1]; 426 struct isa_drq res_drq[2]; 427 struct isa_softc *sc = device_private(parent); 428 struct isa_attach_args ia; 429 int flocs[ISACF_NLOCS]; 430 int tryagain; 431 432 do { 433 ia.ia_pnpname = NULL; 434 ia.ia_pnpcompatnames = NULL; 435 436 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 437 res_io[0].ir_size = 0; 438 439 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 440 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 441 442 res_irq[0].ir_irq = 443 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 444 445 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 446 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 447 448 ia.ia_iot = sc->sc_iot; 449 ia.ia_memt = sc->sc_memt; 450 ia.ia_dmat = sc->sc_dmat; 451 ia.ia_ic = sc->sc_ic; 452 453 ia.ia_io = res_io; 454 ia.ia_nio = 1; 455 456 ia.ia_iomem = res_mem; 457 ia.ia_niomem = 1; 458 459 ia.ia_irq = res_irq; 460 ia.ia_nirq = 1; 461 462 ia.ia_drq = res_drq; 463 ia.ia_ndrq = 2; 464 465 if (!checkattachargs(&ia, slocs)) 466 return (0); 467 468 tryagain = 0; 469 if (config_probe(parent, cf, &ia)) { 470 /* 471 * This is not necessary for detach, but might 472 * still be useful to collect device information. 473 */ 474 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 475 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 476 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 477 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 478 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 479 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 480 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 481 config_attach(parent, cf, &ia, isaprint, 482 CFARGS(.locators = flocs)); 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 Sat Oct 11 14:09:46 GMT 2025