cardbus.c revision 1.94
1 /* $NetBSD: cardbus.c,v 1.94 2008/06/24 19:44:52 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999 and 2000 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 <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: cardbus.c,v 1.94 2008/06/24 19:44:52 drochner Exp $"); 37 38 #include "opt_cardbus.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 #include <sys/syslog.h> 46 #include <sys/proc.h> 47 #include <sys/reboot.h> /* for AB_* needed by bootverbose */ 48 49 #include <sys/bus.h> 50 51 #include <dev/cardbus/cardbusvar.h> 52 #include <dev/pci/pcidevs.h> 53 54 #include <dev/cardbus/cardbus_exrom.h> 55 56 #include <dev/pci/pcivar.h> /* XXX */ 57 #include <dev/pci/pcireg.h> /* XXX */ 58 59 #include <dev/pcmcia/pcmciareg.h> 60 61 #include "locators.h" 62 63 #if defined CARDBUS_DEBUG 64 #define STATIC 65 #define DPRINTF(a) printf a 66 #else 67 #define STATIC static 68 #define DPRINTF(a) 69 #endif 70 71 72 STATIC void cardbusattach(device_t, device_t, void *); 73 STATIC int cardbusdetach(device_t, int); 74 STATIC int cardbusmatch(device_t, struct cfdata *, void *); 75 int cardbus_rescan(device_t, const char *, const int *); 76 void cardbus_childdetached(device_t, device_t); 77 static int cardbusprint(void *, const char *); 78 79 typedef void (*tuple_decode_func)(u_int8_t*, int, void*); 80 81 static int decode_tuples(u_int8_t *, int, tuple_decode_func, void*); 82 #ifdef CARDBUS_DEBUG 83 static void print_tuple(u_int8_t*, int, void*); 84 #endif 85 86 static int cardbus_read_tuples(struct cardbus_attach_args *, 87 cardbusreg_t, u_int8_t *, size_t); 88 89 static void enable_function(struct cardbus_softc *, int, int); 90 static void disable_function(struct cardbus_softc *, int); 91 92 static bool cardbus_child_register(device_t); 93 94 CFATTACH_DECL2(cardbus, sizeof(struct cardbus_softc), 95 cardbusmatch, cardbusattach, cardbusdetach, NULL, 96 cardbus_rescan, cardbus_childdetached); 97 98 #ifndef __NetBSD_Version__ 99 struct cfdriver cardbus_cd = { 100 NULL, "cardbus", DV_DULL 101 }; 102 #endif 103 104 105 STATIC int 106 cardbusmatch(device_t parent, struct cfdata *cf, void *aux) 107 { 108 109 return (1); 110 } 111 112 STATIC void 113 cardbusattach(device_t parent, device_t self, void *aux) 114 { 115 struct cardbus_softc *sc = device_private(self); 116 struct cbslot_attach_args *cba = aux; 117 118 sc->sc_bus = cba->cba_bus; 119 sc->sc_intrline = cba->cba_intrline; 120 sc->sc_cacheline = cba->cba_cacheline; 121 sc->sc_max_lattimer = MIN(0xf8, cba->cba_max_lattimer); 122 123 aprint_naive("\n"); 124 aprint_normal(": bus %d", sc->sc_bus); 125 if (bootverbose) 126 aprint_normal(" cacheline 0x%x, lattimer 0x%x", 127 sc->sc_cacheline, sc->sc_max_lattimer); 128 aprint_normal("\n"); 129 130 sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ 131 sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ 132 sc->sc_dmat = cba->cba_dmat; /* DMA tag */ 133 sc->sc_cc = cba->cba_cc; 134 sc->sc_cf = cba->cba_cf; 135 136 #if rbus 137 sc->sc_rbus_iot = cba->cba_rbus_iot; 138 sc->sc_rbus_memt = cba->cba_rbus_memt; 139 #endif 140 141 if (!pmf_device_register(self, NULL, NULL)) 142 aprint_error_dev(self, "couldn't establish power handler\n"); 143 } 144 145 STATIC int 146 cardbusdetach(device_t self, int flags) 147 { 148 int rc; 149 150 if ((rc = config_detach_children(self, flags)) != 0) 151 return rc; 152 153 pmf_device_deregister(self); 154 return 0; 155 } 156 157 static int 158 cardbus_read_tuples(struct cardbus_attach_args *ca, cardbusreg_t cis_ptr, 159 u_int8_t *tuples, size_t len) 160 { 161 struct cardbus_softc *sc = ca->ca_ct->ct_sc; 162 cardbus_chipset_tag_t cc = ca->ca_ct->ct_cc; 163 cardbus_function_tag_t cf = ca->ca_ct->ct_cf; 164 cardbustag_t tag = ca->ca_tag; 165 cardbusreg_t command; 166 bus_space_tag_t bar_tag; 167 bus_space_handle_t bar_memh; 168 bus_size_t bar_size; 169 bus_addr_t bar_addr; 170 cardbusreg_t reg; 171 int found = 0; 172 int cardbus_space = cis_ptr & CARDBUS_CIS_ASIMASK; 173 int i, j; 174 175 memset(tuples, 0, len); 176 177 cis_ptr = cis_ptr & CARDBUS_CIS_ADDRMASK; 178 179 switch (cardbus_space) { 180 case CARDBUS_CIS_ASI_TUPLE: 181 DPRINTF(("%s: reading CIS data from configuration space\n", 182 device_xname(&sc->sc_dev))); 183 for (i = cis_ptr, j = 0; i < 0xff; i += 4) { 184 u_int32_t e = (*cf->cardbus_conf_read)(cc, tag, i); 185 tuples[j] = 0xff & e; 186 e >>= 8; 187 tuples[j + 1] = 0xff & e; 188 e >>= 8; 189 tuples[j + 2] = 0xff & e; 190 e >>= 8; 191 tuples[j + 3] = 0xff & e; 192 j += 4; 193 } 194 found++; 195 break; 196 197 case CARDBUS_CIS_ASI_BAR0: 198 case CARDBUS_CIS_ASI_BAR1: 199 case CARDBUS_CIS_ASI_BAR2: 200 case CARDBUS_CIS_ASI_BAR3: 201 case CARDBUS_CIS_ASI_BAR4: 202 case CARDBUS_CIS_ASI_BAR5: 203 case CARDBUS_CIS_ASI_ROM: 204 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 205 reg = CARDBUS_ROM_REG; 206 DPRINTF(("%s: reading CIS data from ROM\n", 207 device_xname(&sc->sc_dev))); 208 } else { 209 reg = CARDBUS_CIS_ASI_BAR(cardbus_space); 210 DPRINTF(("%s: reading CIS data from BAR%d\n", 211 device_xname(&sc->sc_dev), cardbus_space - 1)); 212 } 213 214 /* 215 * XXX zero register so mapreg_map doesn't get confused by old 216 * contents. 217 */ 218 cardbus_conf_write(cc, cf, tag, reg, 0); 219 if (Cardbus_mapreg_map(ca->ca_ct, reg, 220 CARDBUS_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 221 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { 222 aprint_error_dev(&sc->sc_dev, "failed to map memory\n"); 223 return (1); 224 } 225 aprint_debug_dev(&sc->sc_dev, "mapped %ju bytes at 0x%jx\n", 226 (uintmax_t)bar_size, (uintmax_t)bar_addr); 227 228 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 229 cardbusreg_t exrom; 230 int save; 231 struct cardbus_rom_image_head rom_image; 232 struct cardbus_rom_image *p; 233 234 save = splhigh(); 235 /* enable rom address decoder */ 236 exrom = cardbus_conf_read(cc, cf, tag, reg); 237 cardbus_conf_write(cc, cf, tag, reg, exrom | 1); 238 239 command = cardbus_conf_read(cc, cf, tag, 240 CARDBUS_COMMAND_STATUS_REG); 241 cardbus_conf_write(cc, cf, tag, 242 CARDBUS_COMMAND_STATUS_REG, 243 command | CARDBUS_COMMAND_MEM_ENABLE); 244 245 if (cardbus_read_exrom(bar_tag, bar_memh, &rom_image)) 246 goto out; 247 248 SIMPLEQ_FOREACH(p, &rom_image, next) { 249 if (p->rom_image == 250 CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { 251 bus_space_read_region_1(p->romt, 252 p->romh, CARDBUS_CIS_ADDR(cis_ptr), 253 tuples, MIN(p->image_size, len)); 254 found++; 255 break; 256 } 257 } 258 while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { 259 SIMPLEQ_REMOVE_HEAD(&rom_image, next); 260 free(p, M_DEVBUF); 261 } 262 out: 263 exrom = cardbus_conf_read(cc, cf, tag, reg); 264 cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); 265 splx(save); 266 } else { 267 command = cardbus_conf_read(cc, cf, tag, 268 CARDBUS_COMMAND_STATUS_REG); 269 cardbus_conf_write(cc, cf, tag, 270 CARDBUS_COMMAND_STATUS_REG, 271 command | CARDBUS_COMMAND_MEM_ENABLE); 272 /* XXX byte order? */ 273 bus_space_read_region_1(bar_tag, bar_memh, 274 cis_ptr, tuples, 275 MIN(bar_size - MIN(bar_size, cis_ptr), len)); 276 found++; 277 } 278 command = cardbus_conf_read(cc, cf, tag, 279 CARDBUS_COMMAND_STATUS_REG); 280 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, 281 command & ~CARDBUS_COMMAND_MEM_ENABLE); 282 cardbus_conf_write(cc, cf, tag, reg, 0); 283 284 Cardbus_mapreg_unmap(ca->ca_ct, reg, bar_tag, bar_memh, 285 bar_size); 286 break; 287 288 #ifdef DIAGNOSTIC 289 default: 290 panic("%s: bad CIS space (%d)", device_xname(&sc->sc_dev), 291 cardbus_space); 292 #endif 293 } 294 return (!found); 295 } 296 297 static void 298 parse_tuple(u_int8_t *tuple, int len, void *data) 299 { 300 struct cardbus_cis_info *cis = data; 301 char *p; 302 int i, bar_index; 303 304 switch (tuple[0]) { 305 case PCMCIA_CISTPL_MANFID: 306 if (tuple[1] != 4) { 307 DPRINTF(("%s: wrong length manufacturer id (%d)\n", 308 __func__, tuple[1])); 309 break; 310 } 311 cis->manufacturer = tuple[2] | (tuple[3] << 8); 312 cis->product = tuple[4] | (tuple[5] << 8); 313 break; 314 315 case PCMCIA_CISTPL_VERS_1: 316 memcpy(cis->cis1_info_buf, tuple + 2, tuple[1]); 317 i = 0; 318 p = cis->cis1_info_buf + 2; 319 while (i < 320 sizeof(cis->cis1_info) / sizeof(cis->cis1_info[0])) { 321 if (p >= cis->cis1_info_buf + tuple[1] || *p == '\xff') 322 break; 323 cis->cis1_info[i++] = p; 324 while (*p != '\0' && *p != '\xff') 325 p++; 326 if (*p == '\0') 327 p++; 328 } 329 break; 330 331 case PCMCIA_CISTPL_BAR: 332 if (tuple[1] != 6) { 333 DPRINTF(("%s: BAR with short length (%d)\n", 334 __func__, tuple[1])); 335 break; 336 } 337 bar_index = tuple[2] & 7; 338 if (bar_index == 0) { 339 DPRINTF(("%s: invalid ASI in BAR tuple\n", __func__)); 340 break; 341 } 342 bar_index--; 343 cis->bar[bar_index].flags = tuple[2]; 344 cis->bar[bar_index].size = 345 (tuple[4] << 0) | 346 (tuple[5] << 8) | 347 (tuple[6] << 16) | 348 (tuple[7] << 24); 349 break; 350 351 case PCMCIA_CISTPL_FUNCID: 352 cis->funcid = tuple[2]; 353 break; 354 355 case PCMCIA_CISTPL_FUNCE: 356 switch (cis->funcid) { 357 case PCMCIA_FUNCTION_SERIAL: 358 if (tuple[1] >= 2 && 359 /* XXX PCMCIA_TPLFE_TYPE_SERIAL_??? */ 360 tuple[2] == 0) { 361 cis->funce.serial.uart_type = tuple[3] & 0x1f; 362 cis->funce.serial.uart_present = 1; 363 } 364 break; 365 366 case PCMCIA_FUNCTION_NETWORK: 367 if (tuple[1] >= 8 && 368 tuple[2] == PCMCIA_TPLFE_TYPE_LAN_NID) { 369 if (tuple[3] > 370 sizeof(cis->funce.network.netid)) { 371 DPRINTF(("%s: unknown network id type " 372 "(len = %d)\n", 373 __func__, tuple[3])); 374 } else { 375 cis->funce.network.netid_present = 1; 376 memcpy(cis->funce.network.netid, 377 tuple + 4, tuple[3]); 378 } 379 } 380 break; 381 } 382 break; 383 } 384 } 385 386 /* 387 * int cardbus_attach_card(struct cardbus_softc *sc) 388 * 389 * This function attaches the card on the slot: turns on power, 390 * reads and analyses tuple, sets configuration index. 391 * 392 * This function returns the number of recognised device functions. 393 * If no functions are recognised, return 0. 394 */ 395 int 396 cardbus_attach_card(struct cardbus_softc *sc) 397 { 398 cardbus_chipset_tag_t cc; 399 cardbus_function_tag_t cf; 400 int cdstatus; 401 static int wildcard[CARDBUSCF_NLOCS] = { 402 CARDBUSCF_FUNCTION_DEFAULT 403 }; 404 405 cc = sc->sc_cc; 406 cf = sc->sc_cf; 407 408 DPRINTF(("cardbus_attach_card: cb%d start\n", 409 device_unit(&sc->sc_dev))); 410 411 /* inspect initial voltage */ 412 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 413 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 414 device_unit(&sc->sc_dev))); 415 return (0); 416 } 417 418 device_pmf_driver_set_child_register(&sc->sc_dev, cardbus_child_register); 419 cardbus_rescan(&sc->sc_dev, "cardbus", wildcard); 420 return (1); /* XXX */ 421 } 422 423 int 424 cardbus_rescan(device_t self, const char *ifattr, 425 const int *locators) 426 { 427 struct cardbus_softc *sc = device_private(self); 428 cardbus_chipset_tag_t cc; 429 cardbus_function_tag_t cf; 430 cardbustag_t tag; 431 cardbusreg_t id, class, cis_ptr; 432 cardbusreg_t bhlc, icr, lattimer; 433 int cdstatus; 434 int function, nfunction; 435 device_t csc; 436 cardbus_devfunc_t ct; 437 438 cc = sc->sc_cc; 439 cf = sc->sc_cf; 440 441 /* inspect initial voltage */ 442 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 443 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 444 device_unit(&sc->sc_dev))); 445 return (0); 446 } 447 448 /* 449 * XXX use fake function 8 to keep power on during whole 450 * configuration. 451 */ 452 enable_function(sc, cdstatus, 8); 453 function = 0; 454 455 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 456 457 /* 458 * Wait until power comes up. Maxmum 500 ms. 459 * 460 * XXX What is this for? The bridge driver ought to have waited 461 * XXX already. 462 */ 463 { 464 int i; 465 466 for (i = 0; i < 5; ++i) { 467 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 468 if (id != 0xffffffff && id != 0) { 469 break; 470 } 471 if (cold) { /* before kernel thread invoked */ 472 delay(100 * 1000); 473 } else { /* thread context */ 474 if (tsleep((void *)sc, PCATCH, "cardbus", 475 hz / 10) != EWOULDBLOCK) { 476 break; 477 } 478 } 479 } 480 aprint_debug_dev(self, "id reg valid in %d iterations\n", i); 481 if (i == 5) { 482 return (EIO); 483 } 484 } 485 486 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 487 DPRINTF(("%s bhlc 0x%08x -> ", device_xname(&sc->sc_dev), bhlc)); 488 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 489 490 for (function = 0; function < nfunction; function++) { 491 struct cardbus_attach_args ca; 492 int locs[CARDBUSCF_NLOCS]; 493 494 if (locators[CARDBUSCF_FUNCTION] != 495 CARDBUSCF_FUNCTION_DEFAULT && 496 locators[CARDBUSCF_FUNCTION] != function) 497 continue; 498 499 if (sc->sc_funcs[function]) 500 continue; 501 502 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 503 504 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 505 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 506 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 507 508 /* Invalid vendor ID value? */ 509 if (CARDBUS_VENDOR(id) == PCI_VENDOR_INVALID) { 510 continue; 511 } 512 513 DPRINTF(("cardbus_attach_card: " 514 "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 515 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 516 517 enable_function(sc, cdstatus, function); 518 519 /* clean up every BAR */ 520 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); 521 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); 522 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); 523 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); 524 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); 525 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); 526 cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); 527 528 /* set initial latency and cacheline size */ 529 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 530 icr = cardbus_conf_read(cc, cf, tag, CARDBUS_INTERRUPT_REG); 531 DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", 532 device_xname(&sc->sc_dev), function, icr, bhlc)); 533 bhlc &= ~(CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT); 534 bhlc |= (sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << 535 CARDBUS_CACHELINE_SHIFT; 536 /* 537 * Set the initial value of the Latency Timer. 538 * 539 * While a PCI device owns the bus, its Latency 540 * Timer counts down bus cycles from its initial 541 * value to 0. Minimum Grant tells for how long 542 * the device wants to own the bus once it gets 543 * access, in units of 250ns. 544 * 545 * On a 33 MHz bus, there are 8 cycles per 250ns. 546 * So I multiply the Minimum Grant by 8 to find 547 * out the initial value of the Latency Timer. 548 * 549 * Avoid setting a Latency Timer less than 0x10, 550 * since the old code did not do that. 551 */ 552 lattimer = 553 MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); 554 if (PCI_LATTIMER(bhlc) < lattimer) { 555 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 556 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 557 } 558 559 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 560 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 561 DPRINTF(("0x%08x\n", bhlc)); 562 563 /* 564 * We need to allocate the ct here, since we might 565 * need it when reading the CIS 566 */ 567 if ((ct = malloc(sizeof(struct cardbus_devfunc), 568 M_DEVBUF, M_NOWAIT)) == NULL) { 569 panic("no room for cardbus_tag"); 570 } 571 572 ct->ct_bhlc = bhlc; 573 ct->ct_cc = sc->sc_cc; 574 ct->ct_cf = sc->sc_cf; 575 ct->ct_bus = sc->sc_bus; 576 ct->ct_func = function; 577 ct->ct_sc = sc; 578 sc->sc_funcs[function] = ct; 579 580 memset(&ca, 0, sizeof(ca)); 581 582 ca.ca_ct = ct; 583 584 ca.ca_iot = sc->sc_iot; 585 ca.ca_memt = sc->sc_memt; 586 ca.ca_dmat = sc->sc_dmat; 587 588 #if rbus 589 ca.ca_rbus_iot = sc->sc_rbus_iot; 590 ca.ca_rbus_memt= sc->sc_rbus_memt; 591 #endif 592 593 ca.ca_tag = tag; 594 ca.ca_bus = sc->sc_bus; 595 ca.ca_function = function; 596 ca.ca_id = id; 597 ca.ca_class = class; 598 599 ca.ca_intrline = sc->sc_intrline; 600 601 if (cis_ptr != 0) { 602 #define TUPLESIZE 2048 603 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); 604 if (cardbus_read_tuples(&ca, cis_ptr, 605 tuple, TUPLESIZE)) { 606 printf("cardbus_attach_card: " 607 "failed to read CIS\n"); 608 } else { 609 #ifdef CARDBUS_DEBUG 610 decode_tuples(tuple, TUPLESIZE, 611 print_tuple, NULL); 612 #endif 613 decode_tuples(tuple, TUPLESIZE, 614 parse_tuple, &ca.ca_cis); 615 } 616 free(tuple, M_DEVBUF); 617 } 618 619 locs[CARDBUSCF_FUNCTION] = function; 620 621 if ((csc = config_found_sm_loc((void *)sc, "cardbus", locs, 622 &ca, cardbusprint, config_stdsubmatch)) == NULL) { 623 /* do not match */ 624 disable_function(sc, function); 625 sc->sc_funcs[function] = NULL; 626 free(ct, M_DEVBUF); 627 } else { 628 /* found */ 629 ct->ct_device = csc; 630 } 631 } 632 /* 633 * XXX power down pseudo function 8 (this will power down the card 634 * if no functions were attached). 635 */ 636 disable_function(sc, 8); 637 638 return (0); 639 } 640 641 static int 642 cardbusprint(void *aux, const char *pnp) 643 { 644 struct cardbus_attach_args *ca = aux; 645 char devinfo[256]; 646 int i; 647 648 if (pnp) { 649 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, 650 sizeof(devinfo)); 651 for (i = 0; i < 4; i++) { 652 if (ca->ca_cis.cis1_info[i] == NULL) 653 break; 654 if (i) 655 aprint_normal(", "); 656 aprint_normal("%s", ca->ca_cis.cis1_info[i]); 657 } 658 aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", 659 i ? " " : "", 660 ca->ca_cis.manufacturer, ca->ca_cis.product); 661 aprint_normal(" %s at %s", devinfo, pnp); 662 } 663 aprint_normal(" function %d", ca->ca_function); 664 665 return (UNCONF); 666 } 667 668 /* 669 * void cardbus_detach_card(struct cardbus_softc *sc) 670 * 671 * This function detaches the card on the slot: detach device data 672 * structure and turns off the power. 673 * 674 * This function must not be called under interrupt context. 675 */ 676 void 677 cardbus_detach_card(struct cardbus_softc *sc) 678 { 679 int f; 680 struct cardbus_devfunc *ct; 681 682 for (f = 0; f < 8; f++) { 683 ct = sc->sc_funcs[f]; 684 if (!ct) 685 continue; 686 687 DPRINTF(("%s: detaching %s\n", device_xname(&sc->sc_dev), 688 device_xname(ct->ct_device))); 689 /* call device detach function */ 690 691 if (config_detach(ct->ct_device, 0) != 0) { 692 aprint_error_dev(&sc->sc_dev, 693 "cannot detach dev %s, function %d\n", 694 device_xname(ct->ct_device), ct->ct_func); 695 } 696 } 697 698 sc->sc_poweron_func = 0; 699 (*sc->sc_cf->cardbus_power)(sc->sc_cc, 700 CARDBUS_VCC_0V | CARDBUS_VPP_0V); 701 } 702 703 void 704 cardbus_childdetached(device_t self, device_t child) 705 { 706 struct cardbus_softc *sc = device_private(self); 707 struct cardbus_devfunc *ct; 708 709 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 710 KASSERT(ct->ct_device == child); 711 712 sc->sc_poweron_func &= ~(1 << ct->ct_func); 713 sc->sc_funcs[ct->ct_func] = NULL; 714 free(ct, M_DEVBUF); 715 } 716 717 /* 718 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 719 * Interrupt handler of pccard. 720 * args: 721 * cardbus_chipset_tag_t *cc 722 * int irq: 723 */ 724 void * 725 cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 726 cardbus_intr_line_t irq, int level, int (*func)(void *), void *arg) 727 { 728 729 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 730 return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); 731 } 732 733 /* 734 * void cardbus_intr_disestablish(cc, cf, handler) 735 * Interrupt handler of pccard. 736 * args: 737 * cardbus_chipset_tag_t *cc 738 */ 739 void 740 cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 741 void *handler) 742 { 743 744 DPRINTF(("- pccard_intr_disestablish\n")); 745 (*cf->cardbus_intr_disestablish)(cc, handler); 746 } 747 748 /* 749 * XXX this should be merged with cardbus_function_{enable,disable}, 750 * but we don't have a ct when these functions are called. 751 */ 752 static void 753 enable_function(struct cardbus_softc *sc, int cdstatus, int function) 754 { 755 756 if (sc->sc_poweron_func == 0) { 757 /* switch to 3V and/or wait for power to stabilize */ 758 if (cdstatus & CARDBUS_3V_CARD) { 759 /* 760 * sc_poweron_func must be substituted before 761 * entering sleep, in order to avoid turn on 762 * power twice. 763 */ 764 sc->sc_poweron_func |= (1 << function); 765 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); 766 } else { 767 /* No cards other than 3.3V cards. */ 768 return; 769 } 770 (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); 771 } 772 sc->sc_poweron_func |= (1 << function); 773 } 774 775 static void 776 disable_function(struct cardbus_softc *sc, int function) 777 { 778 bool powerdown; 779 cardbus_devfunc_t ct; 780 device_t dv; 781 int i; 782 783 sc->sc_poweron_func &= ~(1 << function); 784 if (sc->sc_poweron_func != 0) 785 return; 786 for (i = 0; i < __arraycount(sc->sc_funcs); i++) { 787 if ((ct = sc->sc_funcs[i]) == NULL) 788 continue; 789 dv = ct->ct_device; 790 if (prop_dictionary_get_bool(device_properties(dv), 791 "pmf-powerdown", &powerdown) && !powerdown) 792 return; 793 } 794 /* power-off because no functions are enabled */ 795 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); 796 } 797 798 /* 799 * int cardbus_function_enable(struct cardbus_softc *sc, int func) 800 * 801 * This function enables a function on a card. When no power is 802 * applied on the card, power will be applied on it. 803 */ 804 int 805 cardbus_function_enable(struct cardbus_softc *sc, int func) 806 { 807 cardbus_chipset_tag_t cc = sc->sc_cc; 808 cardbus_function_tag_t cf = sc->sc_cf; 809 cardbus_devfunc_t ct; 810 cardbusreg_t command; 811 cardbustag_t tag; 812 813 DPRINTF(("entering cardbus_function_enable... ")); 814 815 /* entering critical area */ 816 817 /* XXX: sc_vold should be used */ 818 enable_function(sc, CARDBUS_3V_CARD, func); 819 820 /* exiting critical area */ 821 822 tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); 823 824 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 825 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | 826 CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 827 828 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 829 830 if ((ct = sc->sc_funcs[func]) != NULL) 831 Cardbus_conf_write(ct, tag, CARDBUS_BHLC_REG, ct->ct_bhlc); 832 833 cardbus_free_tag(cc, cf, tag); 834 835 DPRINTF(("%x\n", sc->sc_poweron_func)); 836 837 return (0); 838 } 839 840 /* 841 * int cardbus_function_disable(struct cardbus_softc *, int func) 842 * 843 * This function disable a function on a card. When no functions are 844 * enabled, it turns off the power. 845 */ 846 int 847 cardbus_function_disable(struct cardbus_softc *sc, int func) 848 { 849 850 DPRINTF(("entering cardbus_function_disable... ")); 851 852 disable_function(sc, func); 853 854 return (0); 855 } 856 857 /* 858 * int cardbus_get_capability(cardbus_chipset_tag_t cc, 859 * cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, 860 * cardbusreg_t *value) 861 * 862 * Find the specified PCI capability. 863 */ 864 int 865 cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 866 cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) 867 { 868 cardbusreg_t reg; 869 unsigned int ofs; 870 871 reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 872 if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) 873 return (0); 874 875 ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, 876 PCI_CAPLISTPTR_REG)); 877 while (ofs != 0) { 878 #ifdef DIAGNOSTIC 879 if ((ofs & 3) || (ofs < 0x40)) 880 panic("cardbus_get_capability"); 881 #endif 882 reg = cardbus_conf_read(cc, cf, tag, ofs); 883 if (PCI_CAPLIST_CAP(reg) == capid) { 884 if (offset) 885 *offset = ofs; 886 if (value) 887 *value = reg; 888 return (1); 889 } 890 ofs = PCI_CAPLIST_NEXT(reg); 891 } 892 893 return (0); 894 } 895 896 /* 897 * below this line, there are some functions for decoding tuples. 898 * They should go out from this file. 899 */ 900 901 static u_int8_t * 902 decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); 903 904 static int 905 decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) 906 { 907 u_int8_t *tp = tuple; 908 909 if (PCMCIA_CISTPL_LINKTARGET != *tuple) { 910 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 911 return (0); 912 } 913 914 while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) 915 ; 916 917 return (1); 918 } 919 920 static u_int8_t * 921 decode_tuple(u_int8_t *tuple, u_int8_t *end, 922 tuple_decode_func func, void *data) 923 { 924 u_int8_t type; 925 u_int8_t len; 926 927 type = tuple[0]; 928 switch (type) { 929 case PCMCIA_CISTPL_NULL: 930 case PCMCIA_CISTPL_END: 931 len = 1; 932 break; 933 default: 934 if (tuple + 2 > end) 935 return (NULL); 936 len = tuple[1] + 2; 937 break; 938 } 939 940 if (tuple + len > end) 941 return (NULL); 942 943 (*func)(tuple, len, data); 944 945 if (type == PCMCIA_CISTPL_END || tuple + len == end) 946 return (NULL); 947 948 return (tuple + len); 949 } 950 951 /* 952 * XXX: this is another reason why this code should be shared with PCI. 953 */ 954 static int 955 cardbus_get_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 956 cardbusreg_t *state, int offset) 957 { 958 cardbusreg_t value, now; 959 cardbus_chipset_tag_t cc = ct->ct_cc; 960 cardbus_function_tag_t cf = ct->ct_cf; 961 962 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 963 now = value & PCI_PMCSR_STATE_MASK; 964 switch (now) { 965 case PCI_PMCSR_STATE_D0: 966 case PCI_PMCSR_STATE_D1: 967 case PCI_PMCSR_STATE_D2: 968 case PCI_PMCSR_STATE_D3: 969 *state = now; 970 return 0; 971 default: 972 return EINVAL; 973 } 974 } 975 976 int 977 cardbus_get_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, 978 cardbusreg_t *state) 979 { 980 cardbus_chipset_tag_t cc = ct->ct_cc; 981 cardbus_function_tag_t cf = ct->ct_cf; 982 int offset; 983 cardbusreg_t value; 984 985 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) 986 return EOPNOTSUPP; 987 988 return cardbus_get_powerstate_int(ct, tag, state, offset); 989 } 990 991 static int 992 cardbus_set_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 993 cardbusreg_t state, int offset, cardbusreg_t cap_reg) 994 { 995 cardbus_chipset_tag_t cc = ct->ct_cc; 996 cardbus_function_tag_t cf = ct->ct_cf; 997 998 cardbusreg_t value, cap, now; 999 1000 KASSERT((offset & 0x3) == 0); 1001 1002 cap = cap_reg >> PCI_PMCR_SHIFT; 1003 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 1004 now = value & PCI_PMCSR_STATE_MASK; 1005 value &= ~PCI_PMCSR_STATE_MASK; 1006 1007 if (now == state) 1008 return 0; 1009 switch (state) { 1010 case PCI_PMCSR_STATE_D0: 1011 break; 1012 case PCI_PMCSR_STATE_D1: 1013 if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) { 1014 printf("invalid transition from %d to D1\n", (int)now); 1015 return EINVAL; 1016 } 1017 if (!(cap & PCI_PMCR_D1SUPP)) { 1018 printf("D1 not supported\n"); 1019 return EOPNOTSUPP; 1020 } 1021 break; 1022 case PCI_PMCSR_STATE_D2: 1023 if (now == PCI_PMCSR_STATE_D3) { 1024 printf("invalid transition from %d to D2\n", (int)now); 1025 return EINVAL; 1026 } 1027 if (!(cap & PCI_PMCR_D2SUPP)) { 1028 printf("D2 not supported\n"); 1029 return EOPNOTSUPP; 1030 } 1031 break; 1032 case PCI_PMCSR_STATE_D3: 1033 break; 1034 default: 1035 return EINVAL; 1036 } 1037 value |= state; 1038 cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); 1039 if (state == PCI_PMCSR_STATE_D3 || now == PCI_PMCSR_STATE_D3) 1040 DELAY(10000); 1041 else if (state == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D2) 1042 DELAY(200); 1043 1044 return 0; 1045 } 1046 1047 int 1048 cardbus_set_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, cardbusreg_t state) 1049 { 1050 cardbus_chipset_tag_t cc = ct->ct_cc; 1051 cardbus_function_tag_t cf = ct->ct_cf; 1052 int offset; 1053 cardbusreg_t value; 1054 1055 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, 1056 &value)) 1057 return EOPNOTSUPP; 1058 1059 return cardbus_set_powerstate_int(ct, tag, state, offset, value); 1060 } 1061 1062 #ifdef CARDBUS_DEBUG 1063 static const char *tuple_name(int); 1064 static const char *tuple_names[] = { 1065 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 1066 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 1067 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 1068 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 1069 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 1070 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 1071 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 1072 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 1073 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 1074 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 1075 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 1076 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 1077 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 1078 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 1079 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 1080 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 1081 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 1082 "DATE", "BATTERY", "ORG" 1083 }; 1084 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 1085 1086 static const char * 1087 tuple_name(int type) 1088 { 1089 1090 if (0 <= type && type < NAME_LEN(tuple_names)) { 1091 return (tuple_names[type]); 1092 } else if (type == 0xff) { 1093 return ("END"); 1094 } else { 1095 return ("Reserved"); 1096 } 1097 } 1098 1099 static void 1100 print_tuple(u_int8_t *tuple, int len, void *data) 1101 { 1102 int i; 1103 1104 printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); 1105 1106 for (i = 0; i < len; ++i) { 1107 if (i % 16 == 0) { 1108 printf(" 0x%2x:", i); 1109 } 1110 printf(" %x", tuple[i]); 1111 if (i % 16 == 15) { 1112 printf("\n"); 1113 } 1114 } 1115 if (i % 16 != 0) { 1116 printf("\n"); 1117 } 1118 } 1119 #endif 1120 1121 void 1122 cardbus_conf_capture(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1123 cardbustag_t tag, struct cardbus_conf_state *pcs) 1124 { 1125 int off; 1126 1127 for (off = 0; off < 16; off++) 1128 pcs->reg[off] = cardbus_conf_read(cc, cf, tag, (off * 4)); 1129 } 1130 1131 void 1132 cardbus_conf_restore(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1133 cardbustag_t tag, struct cardbus_conf_state *pcs) 1134 { 1135 int off; 1136 cardbusreg_t val; 1137 1138 for (off = 15; off >= 0; off--) { 1139 val = cardbus_conf_read(cc, cf, tag, (off * 4)); 1140 if (val != pcs->reg[off]) 1141 cardbus_conf_write(cc, cf,tag, (off * 4), pcs->reg[off]); 1142 } 1143 } 1144 1145 void 1146 cardbus_disable_retry(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1147 cardbustag_t tag) 1148 { 1149 /* See comment on sys/dev/pci/pci.c:pci_disable_retry() for 1150 * the reason I comment-out this code. 1151 */ 1152 #if 0 1153 cardbusreg_t retry; 1154 1155 retry = cardbus_conf_read(cc, cf, tag, PCI_RETRY_TIMEOUT_REG); 1156 retry &= ~PCI_RETRY_TIMEOUT_REG_MASK; 1157 cardbus_conf_write(cc, cf, tag, PCI_RETRY_TIMEOUT_REG, retry); 1158 #endif 1159 } 1160 1161 struct cardbus_child_power { 1162 struct cardbus_conf_state p_cardbusconf; 1163 cardbus_devfunc_t p_ct; 1164 cardbustag_t p_tag; 1165 cardbus_chipset_tag_t p_cc; 1166 cardbus_function_tag_t p_cf; 1167 cardbusreg_t p_pm_cap; 1168 bool p_has_pm; 1169 int p_pm_offset; 1170 }; 1171 1172 static bool 1173 cardbus_child_suspend(device_t dv PMF_FN_ARGS) 1174 { 1175 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1176 1177 cardbus_conf_capture(priv->p_cc, priv->p_cf, priv->p_tag, 1178 &priv->p_cardbusconf); 1179 1180 if (priv->p_has_pm && 1181 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1182 PCI_PMCSR_STATE_D3, priv->p_pm_offset, priv->p_pm_cap)) { 1183 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1184 return false; 1185 } 1186 1187 Cardbus_function_disable(priv->p_ct); 1188 1189 return true; 1190 } 1191 1192 static bool 1193 cardbus_child_resume(device_t dv PMF_FN_ARGS) 1194 { 1195 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1196 1197 Cardbus_function_enable(priv->p_ct); 1198 1199 if (priv->p_has_pm && 1200 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1201 PCI_PMCSR_STATE_D0, priv->p_pm_offset, priv->p_pm_cap)) { 1202 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1203 return false; 1204 } 1205 1206 cardbus_conf_restore(priv->p_cc, priv->p_cf, priv->p_tag, 1207 &priv->p_cardbusconf); 1208 1209 return true; 1210 } 1211 1212 static void 1213 cardbus_child_deregister(device_t dv) 1214 { 1215 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1216 1217 free(priv, M_DEVBUF); 1218 } 1219 1220 static bool 1221 cardbus_child_register(device_t child) 1222 { 1223 device_t self = device_parent(child); 1224 struct cardbus_softc *sc = device_private(self); 1225 struct cardbus_devfunc *ct; 1226 struct cardbus_child_power *priv; 1227 int off; 1228 cardbusreg_t reg; 1229 1230 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 1231 1232 priv = malloc(sizeof(*priv), M_DEVBUF, M_WAITOK); 1233 1234 priv->p_ct = ct; 1235 priv->p_cc = ct->ct_cc; 1236 priv->p_cf = ct->ct_cf; 1237 priv->p_tag = cardbus_make_tag(priv->p_cc, priv->p_cf, ct->ct_bus, 1238 ct->ct_func); 1239 1240 if (cardbus_get_capability(priv->p_cc, priv->p_cf, priv->p_tag, 1241 PCI_CAP_PWRMGMT, &off, ®)) { 1242 priv->p_has_pm = true; 1243 priv->p_pm_offset = off; 1244 priv->p_pm_cap = reg; 1245 } else { 1246 priv->p_has_pm = false; 1247 priv->p_pm_offset = -1; 1248 } 1249 1250 device_pmf_bus_register(child, priv, cardbus_child_suspend, 1251 cardbus_child_resume, 0, cardbus_child_deregister); 1252 1253 return true; 1254 } 1255
Indexes created Tue Sep 30 11:09:46 GMT 2025