isa.c revision 1.138.76.1
1 /* $NetBSD: isa.c,v 1.138.76.1 2021/03/20 19:33:40 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 1.138.76.1 2021/03/20 19:33:40 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_sm_loc(sc->sc_dev, 247 "isa", 0, &ia, isaprint, isasubmatch); 248 } 249 } 250 251 void 252 isa_free_knowndevs(struct isa_softc *sc) 253 { 254 struct isa_knowndev *ik; 255 struct isa_pnpname *ipn; 256 257 #define FREEIT(x) if (x != NULL) free(x, M_DEVBUF) 258 259 while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) { 260 TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list); 261 FREEIT(ik->ik_pnpname); 262 while ((ipn = ik->ik_pnpcompatnames) != NULL) { 263 ik->ik_pnpcompatnames = ipn->ipn_next; 264 free(ipn->ipn_name, M_DEVBUF); 265 free(ipn, M_DEVBUF); 266 } 267 FREEIT(ik->ik_io); 268 FREEIT(ik->ik_iomem); 269 FREEIT(ik->ik_irq); 270 FREEIT(ik->ik_drq); 271 free(ik, M_DEVBUF); 272 } 273 274 #undef FREEIT 275 } 276 277 static int 278 checkattachargs(struct isa_attach_args *ia, const int *loc) 279 { 280 int i; 281 282 if (ia->ia_nio == 0) { 283 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT) 284 return (0); 285 } else { 286 if (loc[ISACF_PORT] != ISACF_PORT_DEFAULT && 287 loc[ISACF_PORT] != ia->ia_io[0].ir_addr) 288 return (0); 289 } 290 291 if (ia->ia_niomem == 0) { 292 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT) 293 return (0); 294 } else { 295 if (loc[ISACF_IOMEM] != ISACF_IOMEM_DEFAULT && 296 loc[ISACF_IOMEM] != ia->ia_iomem[0].ir_addr) 297 return (0); 298 } 299 300 if (ia->ia_nirq == 0) { 301 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT) 302 return (0); 303 } else { 304 if (loc[ISACF_IRQ] != ISACF_IRQ_DEFAULT && 305 loc[ISACF_IRQ] != ia->ia_irq[0].ir_irq) 306 return (0); 307 } 308 309 if (ia->ia_ndrq == 0) { 310 if (loc[ISACF_DRQ] != ISACF_DRQ_DEFAULT) 311 return (0); 312 if (loc[ISACF_DRQ2] != ISACF_DRQ2_DEFAULT) 313 return (0); 314 } else { 315 for (i = 0; i < 2; i++) { 316 if (i == ia->ia_ndrq) 317 break; 318 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT && 319 loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq) 320 return (0); 321 } 322 for (; i < 2; i++) { 323 if (loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT) 324 return (0); 325 } 326 } 327 328 return (1); 329 } 330 331 int 332 isasubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 333 { 334 struct isa_attach_args *ia = aux; 335 336 if (!checkattachargs(ia, cf->cf_loc)) 337 return (0); 338 339 return (config_match(parent, cf, aux)); 340 } 341 342 int 343 isaprint(void *aux, const char *isa) 344 { 345 struct isa_attach_args *ia = aux; 346 const char *sep; 347 int i; 348 349 /* 350 * This block of code only fires if we have a direct-config'd 351 * device for which there is no driver match. 352 */ 353 if (isa != NULL) { 354 struct isa_pnpname *ipn; 355 356 if (ia->ia_pnpname != NULL) 357 aprint_normal("%s", ia->ia_pnpname); 358 if ((ipn = ia->ia_pnpcompatnames) != NULL) { 359 aprint_normal(" ("); /* ) */ 360 for (sep = ""; ipn != NULL; 361 ipn = ipn->ipn_next, sep = " ") { 362 aprint_normal("%s%s", sep, ipn->ipn_name); 363 } 364 /* ( */ aprint_normal(")"); 365 } 366 aprint_normal(" at %s", isa); 367 } 368 369 if (ia->ia_nio) { 370 sep = ""; 371 aprint_normal(" port "); 372 for (i = 0; i < ia->ia_nio; i++) { 373 if (ia->ia_io[i].ir_size == 0) 374 continue; 375 aprint_normal("%s0x%x", sep, ia->ia_io[i].ir_addr); 376 if (ia->ia_io[i].ir_size > 1) 377 aprint_normal("-0x%x", ia->ia_io[i].ir_addr + 378 ia->ia_io[i].ir_size - 1); 379 sep = ","; 380 } 381 } 382 383 if (ia->ia_niomem) { 384 sep = ""; 385 aprint_normal(" iomem "); 386 for (i = 0; i < ia->ia_niomem; i++) { 387 if (ia->ia_iomem[i].ir_size == 0) 388 continue; 389 aprint_normal("%s0x%x", sep, ia->ia_iomem[i].ir_addr); 390 if (ia->ia_iomem[i].ir_size > 1) 391 aprint_normal("-0x%x", ia->ia_iomem[i].ir_addr + 392 ia->ia_iomem[i].ir_size - 1); 393 sep = ","; 394 } 395 } 396 397 if (ia->ia_nirq) { 398 sep = ""; 399 aprint_normal(" irq "); 400 for (i = 0; i < ia->ia_nirq; i++) { 401 if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT) 402 continue; 403 aprint_normal("%s%d", sep, ia->ia_irq[i].ir_irq); 404 sep = ","; 405 } 406 } 407 408 if (ia->ia_ndrq) { 409 sep = ""; 410 aprint_normal(" drq "); 411 for (i = 0; i < ia->ia_ndrq; i++) { 412 if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT) 413 continue; 414 aprint_normal("%s%d", sep, ia->ia_drq[i].ir_drq); 415 sep = ","; 416 } 417 } 418 419 return (UNCONF); 420 } 421 422 int 423 isasearch(device_t parent, cfdata_t cf, const int *slocs, void *aux) 424 { 425 struct isa_io res_io[1]; 426 struct isa_iomem res_mem[1]; 427 struct isa_irq res_irq[1]; 428 struct isa_drq res_drq[2]; 429 struct isa_softc *sc = device_private(parent); 430 struct isa_attach_args ia; 431 int flocs[ISACF_NLOCS]; 432 int tryagain; 433 434 do { 435 ia.ia_pnpname = NULL; 436 ia.ia_pnpcompatnames = NULL; 437 438 res_io[0].ir_addr = cf->cf_loc[ISACF_PORT]; 439 res_io[0].ir_size = 0; 440 441 res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM]; 442 res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ]; 443 444 res_irq[0].ir_irq = 445 cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ]; 446 447 res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ]; 448 res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2]; 449 450 ia.ia_iot = sc->sc_iot; 451 ia.ia_memt = sc->sc_memt; 452 ia.ia_dmat = sc->sc_dmat; 453 ia.ia_ic = sc->sc_ic; 454 455 ia.ia_io = res_io; 456 ia.ia_nio = 1; 457 458 ia.ia_iomem = res_mem; 459 ia.ia_niomem = 1; 460 461 ia.ia_irq = res_irq; 462 ia.ia_nirq = 1; 463 464 ia.ia_drq = res_drq; 465 ia.ia_ndrq = 2; 466 467 if (!checkattachargs(&ia, slocs)) 468 return (0); 469 470 tryagain = 0; 471 if (config_match(parent, cf, &ia) > 0) { 472 /* 473 * This is not necessary for detach, but might 474 * still be useful to collect device information. 475 */ 476 flocs[ISACF_PORT] = ia.ia_io[0].ir_addr; 477 flocs[ISACF_SIZE] = ia.ia_io[0].ir_size; 478 flocs[ISACF_IOMEM] = ia.ia_iomem[0].ir_addr; 479 flocs[ISACF_IOSIZ] = ia.ia_iomem[0].ir_size; 480 flocs[ISACF_IRQ] = ia.ia_irq[0].ir_irq; 481 flocs[ISACF_DRQ] = ia.ia_drq[0].ir_drq; 482 flocs[ISACF_DRQ2] = ia.ia_drq[1].ir_drq; 483 config_attach_loc(parent, cf, flocs, &ia, isaprint); 484 tryagain = (cf->cf_fstate == FSTATE_STAR); 485 } 486 } while (tryagain); 487 488 return (0); 489 } 490 491 const char * 492 isa_intr_typename(int type) 493 { 494 495 switch (type) { 496 case IST_NONE: 497 return ("none"); 498 case IST_PULSE: 499 return ("pulsed"); 500 case IST_EDGE: 501 return ("edge-triggered"); 502 case IST_LEVEL: 503 return ("level-triggered"); 504 default: 505 panic("isa_intr_typename: invalid type %d", type); 506 } 507 } 508 509 int 510 isa_get_slotcount(void) 511 { 512 513 return isa_slotcount; 514 } 515 516 void 517 isa_set_slotcount(int arg) 518 { 519 520 isa_slotcount = arg; 521 } 522
Indexes created Thu Oct 02 01:09:59 GMT 2025