isa.c revision 1.138.76.3
1 /* $NetBSD: isa.c,v 1.138.76.3 2021/03/22 16:23:45 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 1.138.76.3 2021/03/22 16:23:45 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_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(sc->sc_ic, self); 158 159 return 0; 160 } 161 162 int 163 isarescan(device_t self, const char *ifattr, const int *locators) 164 { 165 prop_dictionary_t dict; 166 int locs[ISACF_NLOCS]; 167 bool no_legacy_devices = false; 168 169 dict = device_properties(self); 170 if (prop_dictionary_get_bool(dict, "no-legacy-devices", 171 &no_legacy_devices) == true) { 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 CFARG_SUBMATCH, isasearch, 191 CFARG_IATTR, ifattr, 192 CFARG_LOCATORS, locs, 193 CFARG_EOL); 194 return (0); 195 } 196 197 void 198 isachilddetached(device_t self, device_t child) 199 { 200 struct isa_knowndev *ik; 201 struct isa_softc *sc = device_private(self); 202 203 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 204 if (ik->ik_claimed == child) 205 ik->ik_claimed = NULL; 206 } 207 } 208 209 void 210 isa_attach_knowndevs(struct isa_softc *sc) 211 { 212 struct isa_attach_args ia; 213 struct isa_knowndev *ik; 214 215 if (TAILQ_EMPTY(&sc->sc_knowndevs)) 216 return; 217 218 TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) { 219 if (ik->ik_claimed != NULL) 220 continue; 221 222 ia.ia_iot = sc->sc_iot; 223 ia.ia_memt = sc->sc_memt; 224 ia.ia_dmat = sc->sc_dmat; 225 ia.ia_ic = sc->sc_ic; 226 227 ia.ia_pnpname = ik->ik_pnpname; 228 ia.ia_pnpcompatnames = ik->ik_pnpcompatnames; 229 230 ia.ia_io = ik->ik_io; 231 ia.ia_nio = ik->ik_nio; 232 233 ia.ia_iomem = ik->ik_iomem; 234 ia.ia_niomem = ik->ik_niomem; 235 236 ia.ia_irq = ik->ik_irq; 237 ia.ia_nirq = ik->ik_nirq; 238 239 ia.ia_drq = ik->ik_drq; 240 ia.ia_ndrq = ik->ik_ndrq; 241 242 ia.ia_aux = NULL; 243 244 /* XXX should setup locator array */ 245 246 ik->ik_claimed = config_found(sc->sc_dev, &ia, isaprint, 247 CFARG_SUBMATCH, isasubmatch, 248 CFARG_EOL); 249 } 250 } 251 252 void 253 isa_free_knowndevs(struct isa_softc *sc) 254 { 255 struct isa_knowndev *ik; 256 struct isa_pnpname *ipn; 257 258 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 259 260 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 261 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 262 FREEIT(ik->ik_pnpname); 263 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 264 ik->ik_pnpcompatnames = ipn->ipn_next; 265 free(ipn->ipn_name, M_DEVBUF); 266 free(ipn, M_DEVBUF); 267 } 268 FREEIT(ik->ik_io); 269 FREEIT(ik->ik_iomem); 270 FREEIT(ik->ik_irq); 271 FREEIT(ik->ik_drq); 272 free(ik, M_DEVBUF); 273 } 274 275 #undef FREEIT 276 } 277 278 static int 279 checkattachargs(struct isa_attach_args *ia, const int *loc) 280 { 281 int i; 282 283 if (ia->ia_nio == 0) { 284 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 285 return (0); 286 } else { 287 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 288 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 289 return (0); 290 } 291 292 if (ia->ia_niomem == 0) { 293 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 294 return (0); 295 } else { 296 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 297 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 298 return (0); 299 } 300 301 if (ia->ia_nirq == 0) { 302 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 303 return (0); 304 } else { 305 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 306 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 307 return (0); 308 } 309 310 if (ia->ia_ndrq == 0) { 311 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 312 return (0); 313 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 314 return (0); 315 } else { 316 for (i = 0; i < 2; i++) { 317 if (i == ia->ia_ndrq) 318 break; 319 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 320 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 321 return (0); 322 } 323 for (; i < 2; i++) { 324 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 325 return (0); 326 } 327 } 328 329 return (1); 330 } 331 332 int 333 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 334 { 335 struct isa_attach_args *ia = aux; 336 337 if (!checkattachargs(ia, cf->cf_loc)) 338 return (0); 339 340 return (config_match(parent, cf, aux)); 341 } 342 343 int 344 isaprint(void *aux, const char *isa) 345 { 346 struct isa_attach_args *ia = aux; 347 const char *sep; 348 int i; 349 350 /* 351 * This block of code only fires if we have a direct-config'd 352 * device for which there is no driver match. 353 */ 354 if (isa != NULL) { 355 struct isa_pnpname *ipn; 356 357 if (ia->ia_pnpname != NULL) 358 aprint_normal("%s", ia->ia_pnpname); 359 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 360 aprint_normal(" ("); /* ) */ 361 for (sep = ""; ipn != NULL; 362 ipn = ipn->ipn_next, sep = " ") { 363 aprint_normal("%s%s", sep, ipn->ipn_name); 364 } 365 /* ( */ aprint_normal(")"); 366 } 367 aprint_normal(" at %s", isa); 368 } 369 370 if (ia->ia_nio) { 371 sep = ""; 372 aprint_normal(" port "); 373 for (i = 0; i < ia->ia_nio; i++) { 374 if (ia->ia_io[i].ir_size == 0) 375 continue; 376 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 377 if (ia->ia_io[i].ir_size > 1) 378 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 379 ia->ia_io[i].ir_size - 1); 380 sep = ","; 381 } 382 } 383 384 if (ia->ia_niomem) { 385 sep = ""; 386 aprint_normal(" iomem "); 387 for (i = 0; i < ia->ia_niomem; i++) { 388 if (ia->ia_iomem[i].ir_size == 0) 389 continue; 390 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 391 if (ia->ia_iomem[i].ir_size > 1) 392 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 393 ia->ia_iomem[i].ir_size - 1); 394 sep = ","; 395 } 396 } 397 398 if (ia->ia_nirq) { 399 sep = ""; 400 aprint_normal(" irq "); 401 for (i = 0; i < ia->ia_nirq; i++) { 402 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 403 continue; 404 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 405 sep = ","; 406 } 407 } 408 409 if (ia->ia_ndrq) { 410 sep = ""; 411 aprint_normal(" drq "); 412 for (i = 0; i < ia->ia_ndrq; i++) { 413 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 414 continue; 415 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 416 sep = ","; 417 } 418 } 419 420 return (UNCONF); 421 } 422 423 int 424 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 425 { 426 struct isa_io res_io[1]; 427 struct isa_iomem res_mem[1]; 428 struct isa_irq res_irq[1]; 429 struct isa_drq res_drq[2]; 430 struct isa_softc *sc = device_private(parent); 431 struct isa_attach_args ia; 432 int flocs[ISACF_NLOCS]; 433 int tryagain; 434 435 do { 436 ia.ia_pnpname = NULL; 437 ia.ia_pnpcompatnames = NULL; 438 439 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 440 res_io[0].ir_size = 0; 441 442 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 443 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 444 445 res_irq[0].ir_irq = 446 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 447 448 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 449 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 450 451 ia.ia_iot = sc->sc_iot; 452 ia.ia_memt = sc->sc_memt; 453 ia.ia_dmat = sc->sc_dmat; 454 ia.ia_ic = sc->sc_ic; 455 456 ia.ia_io = res_io; 457 ia.ia_nio = 1; 458 459 ia.ia_iomem = res_mem; 460 ia.ia_niomem = 1; 461 462 ia.ia_irq = res_irq; 463 ia.ia_nirq = 1; 464 465 ia.ia_drq = res_drq; 466 ia.ia_ndrq = 2; 467 468 if (!checkattachargs(&ia, slocs)) 469 return (0); 470 471 tryagain = 0; 472 if (config_match(parent, cf, &ia) > 0) { 473 /* 474 * This is not necessary for detach, but might 475 * still be useful to collect device information. 476 */ 477 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 478 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 479 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 480 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 481 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 482 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 483 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 484 config_attach_loc(parent, cf, flocs, &ia, isaprint); 485 tryagain = (cf->cf_fstate == FSTATE_STAR); 486 } 487 } while (tryagain); 488 489 return (0); 490 } 491 492 const char * 493 isa_intr_typename(int type) 494 { 495 496 switch (type) { 497 case IST_NONE: 498 return ("none"); 499 case IST_PULSE: 500 return ("pulsed"); 501 case IST_EDGE: 502 return ("edge-triggered"); 503 case IST_LEVEL: 504 return ("level-triggered"); 505 default: 506 panic("isa_intr_typename: invalid type %d", type); 507 } 508 } 509 510 int 511 isa_get_slotcount(void) 512 { 513 514 return isa_slotcount; 515 } 516 517 void 518 isa_set_slotcount(int arg) 519 { 520 521 isa_slotcount = arg; 522 } 523
Indexes created Thu Oct 02 01:09:59 GMT 2025