cardbus.c revision 1.4
1 /* $NetBSD: cardbus.c,v 1.4 1999/10/27 09:29:18 haya Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998 and 1999 5 * HAYAKAWA Koichi. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by HAYAKAWA Koichi. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include "opt_cardbus.h" 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 #include <sys/kernel.h> 43 #include <sys/syslog.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/cardbus/cardbusvar.h> 48 #include <dev/cardbus/pccardcis.h> 49 50 #include <dev/pci/pcivar.h> /* XXX */ 51 #include <dev/pci/pcireg.h> /* XXX */ 52 53 #if defined CARDBUS_DEBUG 54 #define STATIC 55 #define DPRINTF(a) printf a 56 #define DDELAY(x) delay((x)*1000*1000) 57 #else 58 #define STATIC static 59 #define DPRINTF(a) 60 #endif 61 62 63 64 STATIC void cardbusattach __P((struct device *, struct device *, void *)); 65 /* STATIC int cardbusprint __P((void *, const char *)); */ 66 int cardbus_attach_card __P((struct cardbus_softc *)); 67 68 #if !defined __BROKEN_INDIRECT_CONFIG 69 STATIC int cardbusmatch __P((struct device *, struct cfdata *, void *)); 70 static int cardbussubmatch __P((struct device *, struct cfdata *, void *)); 71 #else 72 STATIC int cardbusmatch __P((struct device *, void *, void *)); 73 static int cardbussubmatch __P((struct device *, void *, void *)); 74 #endif 75 static int cardbusprint __P((void *, const char *)); 76 77 static int decode_tuples __P((u_int8_t *, int)); 78 79 80 struct cfattach cardbus_ca = { 81 sizeof(struct cardbus_softc), cardbusmatch, cardbusattach 82 }; 83 84 #ifndef __NetBSD_Version__ 85 struct cfdriver cardbus_cd = { 86 NULL, "cardbus", DV_DULL 87 }; 88 #endif 89 90 91 STATIC int 92 #if defined __BROKEN_INDIRECT_CONFIG 93 cardbusmatch(parent, match, aux) 94 struct device *parent; 95 void *match; 96 void *aux; 97 #else 98 cardbusmatch(parent, cf, aux) 99 struct device *parent; 100 struct cfdata *cf; 101 void *aux; 102 #endif 103 { 104 #if defined __BROKEN_INDIRECT_CONFIG 105 struct cfdata *cf = match; 106 #endif 107 struct cbslot_attach_args *cba = aux; 108 109 if (strcmp(cba->cba_busname, cf->cf_driver->cd_name)) { 110 DPRINTF(("cardbusmatch: busname differs %s <=> %s\n", 111 cba->cba_busname, cf->cf_driver->cd_name)); 112 return 0; 113 } 114 115 /* which function? */ 116 if (cf->cbslotcf_func != CBSLOT_UNK_FUNC && 117 cf->cbslotcf_func != cba->cba_function) { 118 DPRINTF(("pccardmatch: function differs %d <=> %d\n", 119 cf->cbslotcf_func, cba->cba_function)); 120 return 0; 121 } 122 123 if (cba->cba_function < 0 || cba->cba_function > 255) { 124 return 0; 125 } 126 127 return 1; 128 } 129 130 131 132 STATIC void 133 cardbusattach(parent, self, aux) 134 struct device *parent; 135 struct device *self; 136 void *aux; 137 { 138 struct cardbus_softc *sc = (void *)self; 139 struct cbslot_attach_args *cba = aux; 140 int cdstatus; 141 142 sc->sc_bus = cba->cba_bus; 143 sc->sc_device = cba->cba_function; 144 sc->sc_intrline = cba->cba_intrline; 145 sc->sc_cacheline = cba->cba_cacheline; 146 sc->sc_lattimer = cba->cba_lattimer; 147 148 printf(": bus %d device %d", sc->sc_bus, sc->sc_device); 149 printf(" cacheline 0x%x, lattimer 0x%x\n", sc->sc_cacheline,sc->sc_lattimer); 150 151 sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ 152 sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ 153 sc->sc_dmat = cba->cba_dmat; /* DMA tag */ 154 sc->sc_cc = cba->cba_cc; 155 sc->sc_cf = cba->cba_cf; 156 157 #if rbus 158 sc->sc_rbus_iot = cba->cba_rbus_iot; 159 sc->sc_rbus_memt = cba->cba_rbus_memt; 160 #endif 161 162 sc->sc_funcs = NULL; 163 164 cdstatus = 0; 165 } 166 167 168 169 170 /* 171 * int cardbus_attach_card(struct cardbus_softc *sc) 172 * 173 * This function attaches the card on the slot: turns on power, 174 * reads and analyses tuple, sets consifuration index. 175 * 176 * This function returns the number of recognised device functions. 177 * If no functions are recognised, return 0. 178 */ 179 int 180 cardbus_attach_card(sc) 181 struct cardbus_softc *sc; 182 { 183 cardbus_chipset_tag_t cc; 184 cardbus_function_tag_t cf; 185 int cdstatus; 186 cardbustag_t tag; 187 cardbusreg_t id, class, cis_ptr; 188 cardbusreg_t bhlc; 189 u_int8_t tuple[2048]; 190 int function, nfunction; 191 struct cardbus_devfunc **previous_next = &(sc->sc_funcs); 192 struct device *csc; 193 int no_work_funcs = 0; 194 cardbus_devfunc_t ct; 195 196 cc = sc->sc_cc; 197 cf = sc->sc_cf; 198 199 DPRINTF(("cardbus_attach_card: cb%d start\n", sc->sc_dev.dv_unit)); 200 201 /* inspect initial voltage */ 202 if (0 == (cdstatus = (cf->cardbus_ctrl)(cc, CARDBUS_CD))) { 203 DPRINTF(("cardbusattach: no CardBus card on cb%d\n", sc->sc_dev.dv_unit)); 204 return 0; 205 } 206 207 if (cdstatus & CARDBUS_3V_CARD) { 208 cf->cardbus_power(cc, CARDBUS_VCC_3V); 209 sc->sc_poweron_func = 1; /* function 0 on */ 210 } 211 212 (cf->cardbus_ctrl)(cc, CARDBUS_RESET); 213 214 function = 0; 215 216 tag = cardbus_make_tag(cc, cf, sc->sc_bus, sc->sc_device, function); 217 218 /* 219 * Wait until power comes up. Maxmum 500 ms. 220 */ 221 { 222 int i; 223 for (i = 0; i < 5; ++i) { 224 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 225 if (id != 0xffffffff && id != 0) { 226 break; 227 } 228 delay(100*1000); /* or tsleep */ 229 } 230 if (i == 5) { 231 return 0; 232 } 233 } 234 235 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 236 if (CARDBUS_LATTIMER(bhlc) < 0x10) { 237 bhlc &= (CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT); 238 bhlc |= (0x10 << CARDBUS_LATTIMER_SHIFT); 239 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 240 } 241 242 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 243 244 /* 245 * XXX multi-function card 246 * 247 * I don't know how to process CIS information for 248 * multi-function cards. 249 */ 250 251 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 252 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 253 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 254 255 DPRINTF(("cardbus_attach_card: Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 256 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 257 258 bzero(tuple, 2048); 259 260 if (CARDBUS_CIS_ASI_TUPLE == (CARDBUS_CIS_ASI(cis_ptr))) { 261 /* Tuple is in Cardbus config space */ 262 int i = cis_ptr & CARDBUS_CIS_ADDRMASK; 263 int j = 0; 264 265 for (; i < 0xff; i += 4) { 266 u_int32_t e = (cf->cardbus_conf_read)(cc, tag, i); 267 tuple[j] = 0xff & e; 268 e >>= 8; 269 tuple[j + 1] = 0xff & e; 270 e >>= 8; 271 tuple[j + 2] = 0xff & e; 272 e >>= 8; 273 tuple[j + 3] = 0xff & e; 274 j += 4; 275 } 276 } else if (CARDBUS_CIS_ASI(cis_ptr) <= CARDBUS_CIS_ASI_BAR5) { 277 /* int bar = CARDBUS_CIS_ASI_BAR(cis_ptr);*/ 278 } 279 280 281 decode_tuples(tuple, 2048); 282 283 { 284 struct cardbus_attach_args ca; 285 286 if (NULL == (ct = (cardbus_devfunc_t)malloc(sizeof(struct cardbus_devfunc), 287 M_DEVBUF, M_NOWAIT))) { 288 panic("no room for cardbus_tag"); 289 } 290 291 ct->ct_cc = sc->sc_cc; 292 ct->ct_cf = sc->sc_cf; 293 ct->ct_bus = sc->sc_bus; 294 ct->ct_dev = sc->sc_device; 295 ct->ct_func = function; 296 ct->ct_sc = sc; 297 ct->ct_next = NULL; 298 *previous_next = ct; 299 300 ca.ca_unit = sc->sc_dev.dv_unit; 301 ca.ca_ct = ct; 302 303 ca.ca_iot = sc->sc_iot; 304 ca.ca_memt = sc->sc_memt; 305 ca.ca_dmat = sc->sc_dmat; 306 307 ca.ca_tag = tag; 308 ca.ca_device = sc->sc_device; 309 ca.ca_function = function; 310 ca.ca_id = id; 311 ca.ca_class = class; 312 313 ca.ca_intrline = sc->sc_intrline; 314 315 if (NULL == (csc = config_found_sm((void *)sc, &ca, cardbusprint, cardbussubmatch))) { 316 /* do not match */ 317 cf->cardbus_power(cc, CARDBUS_VCC_0V); 318 sc->sc_poweron_func = 0; /* no functions on */ 319 free(cc, M_DEVBUF); 320 } else { 321 /* found */ 322 previous_next = &(ct->ct_next); 323 ct->ct_device = csc; 324 ++no_work_funcs; 325 } 326 } 327 328 return no_work_funcs; 329 } 330 331 332 static int 333 #ifdef __BROKEN_INDIRECT_CONFIG 334 cardbussubmatch(parent, match, aux) 335 #else 336 cardbussubmatch(parent, cf, aux) 337 #endif 338 struct device *parent; 339 #ifdef __BROKEN_INDIRECT_CONFIG 340 void *match; 341 #else 342 struct cfdata *cf; 343 #endif 344 void *aux; 345 { 346 #ifdef __BROKEN_INDIRECT_CONFIG 347 struct cfdata *cf = match; 348 #endif 349 struct cardbus_attach_args *ca = aux; 350 351 if (cf->cardbuscf_dev != CARDBUS_UNK_DEV && 352 cf->cardbuscf_dev != ca->ca_unit) { 353 return 0; 354 } 355 if (cf->cardbuscf_function != CARDBUS_UNK_FUNCTION && 356 cf->cardbuscf_function != ca->ca_function) { 357 return 0; 358 } 359 360 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 361 } 362 363 364 365 static int 366 cardbusprint(aux, pnp) 367 void *aux; 368 const char *pnp; 369 { 370 register struct cardbus_attach_args *ca = aux; 371 char devinfo[256]; 372 373 if (pnp) { 374 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo); 375 printf("%s at %s", devinfo, pnp); 376 } 377 printf(" dev %d function %d", ca->ca_device, ca->ca_function); 378 379 return UNCONF; 380 } 381 382 383 384 385 386 387 /* 388 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 389 * Interrupt handler of pccard. 390 * args: 391 * cardbus_chipset_tag_t *cc 392 * int irq: 393 */ 394 void * 395 cardbus_intr_establish(cc, cf, irq, level, func, arg) 396 cardbus_chipset_tag_t cc; 397 cardbus_function_tag_t cf; 398 cardbus_intr_handle_t irq; 399 int level; 400 int (*func) __P((void *)); 401 void *arg; 402 { 403 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 404 405 return (*cf->cardbus_intr_establish)(cc, irq, level, func, arg); 406 } 407 408 409 410 /* 411 * void cardbus_intr_disestablish(cc, cf, handler) 412 * Interrupt handler of pccard. 413 * args: 414 * cardbus_chipset_tag_t *cc 415 */ 416 void 417 cardbus_intr_disestablish(cc, cf, handler) 418 cardbus_chipset_tag_t cc; 419 cardbus_function_tag_t cf; 420 void *handler; 421 { 422 DPRINTF(("- pccard_intr_disestablish\n")); 423 424 (*cf->cardbus_intr_disestablish)(cc, handler); 425 return; 426 } 427 428 429 430 /* 431 * int cardbus_function_enable(cardbus_devfunc_t ct) 432 * 433 * This function enables a function on a card. When no power is 434 * applied on the card, power will be applied on it. 435 */ 436 int 437 cardbus_function_enable(ct) 438 cardbus_devfunc_t ct; 439 { 440 struct cardbus_softc *sc = ct->ct_sc; 441 int func = ct->ct_func; 442 cardbus_chipset_tag_t cc = sc->sc_cc; 443 cardbus_function_tag_t cf = sc->sc_cf; 444 cardbusreg_t command; 445 cardbustag_t tag; 446 447 DPRINTF(("entering cardbus_function_enable... ")); 448 449 /* entering critical area */ 450 451 if (sc->sc_poweron_func == 0) { 452 /* no functions are enabled */ 453 (*cf->cardbus_power)(cc, CARDBUS_VCC_3V); /* XXX: sc_vold should be used */ 454 (*cf->cardbus_ctrl)(cc, CARDBUS_RESET); 455 } 456 457 sc->sc_poweron_func |= (1 << func); 458 459 /* exiting critical area */ 460 461 tag = Cardbus_make_tag(ct); 462 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 463 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 464 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 465 Cardbus_free_tag(ct, tag); 466 467 468 DPRINTF(("%x\n", sc->sc_poweron_func)); 469 470 return 0; 471 } 472 473 474 /* 475 * int cardbus_function_disable(cardbus_devfunc_t ct) 476 * 477 * This function disable a function on a card. When no functions are 478 * enabled, it turns off the power. 479 */ 480 int 481 cardbus_function_disable(ct) 482 cardbus_devfunc_t ct; 483 { 484 struct cardbus_softc *sc = ct->ct_sc; 485 int func = ct->ct_func; 486 cardbus_chipset_tag_t cc = sc->sc_cc; 487 cardbus_function_tag_t cf = sc->sc_cf; 488 489 DPRINTF(("entering cardbus_enable_disable... ")); 490 491 sc->sc_poweron_func &= ~(1 << func); 492 493 DPRINTF(("%x\n", sc->sc_poweron_func)); 494 495 if (sc->sc_poweron_func == 0) { 496 /* power-off because no functions are enabled */ 497 (*cf->cardbus_power)(cc, CARDBUS_VCC_0V); 498 } 499 500 return 0; 501 } 502 503 504 505 506 507 508 509 /* 510 * below this line, there are some functions for decoding tuples. 511 * They should go out from this file. 512 */ 513 514 static u_int8_t *decode_tuple __P((u_int8_t *)); 515 #ifdef CARDBUS_DEBUG 516 static char *tuple_name __P((int)); 517 #endif 518 519 static int 520 decode_tuples(tuple, buflen) 521 u_int8_t *tuple; 522 int buflen; 523 { 524 u_int8_t *tp = tuple; 525 526 if (CISTPL_LINKTARGET != *tuple) { 527 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 528 return 0; 529 } 530 531 while (NULL != (tp = decode_tuple(tp))) { 532 if (tuple + buflen < tp) { 533 break; 534 } 535 } 536 537 return 1; 538 } 539 540 541 static u_int8_t * 542 decode_tuple(tuple) 543 u_int8_t *tuple; 544 { 545 u_int8_t type; 546 u_int8_t len; 547 #ifdef CARDBUS_DEBUG 548 int i; 549 #endif 550 551 type = tuple[0]; 552 len = tuple[1] + 2; 553 554 #ifdef CARDBUS_DEBUG 555 printf("tuple: %s len %d\n", tuple_name(type), len); 556 #endif 557 if (CISTPL_END == type) { 558 return NULL; 559 } 560 561 #ifdef CARDBUS_DEBUG 562 for (i = 0; i < len; ++i) { 563 if (i % 16 == 0) { 564 printf(" 0x%2x:", i); 565 } 566 printf(" %x",tuple[i]); 567 if (i % 16 == 15) { 568 printf("\n"); 569 } 570 } 571 if (i % 16 != 0) { 572 printf("\n"); 573 } 574 #endif 575 576 return tuple + len; 577 } 578 579 580 #ifdef CARDBUS_DEBUG 581 static char * 582 tuple_name(type) 583 int type; 584 { 585 static char *tuple_name_s [] = { 586 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 587 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 588 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 589 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 590 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 591 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 592 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 593 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 594 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 595 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 596 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 597 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 598 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 599 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 600 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 601 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 602 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 603 "DATE", "BATTERY", "ORG" 604 }; 605 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 606 607 if (type > 0 && type < NAME_LEN(tuple_name_s)) { 608 return tuple_name_s[type]; 609 } else if (0xff == type) { 610 return "END"; 611 } else { 612 return "Reserved"; 613 } 614 } 615 #endif 616
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