cardbus.c revision 1.97
1 /* $NetBSD: cardbus.c,v 1.97 2009/05/12 12:11:17 cegger 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 1.97 2009/05/12 12:11:17 cegger 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, cfdata_t, 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_DECL3_NEW(cardbus, sizeof(struct cardbus_softc), 95 cardbusmatch, cardbusattach, cardbusdetach, NULL, 96 cardbus_rescan, cardbus_childdetached, DVF_DETACH_SHUTDOWN); 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, cfdata_t 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_dev = self; 119 120 sc->sc_bus = cba->cba_bus; 121 sc->sc_intrline = cba->cba_intrline; 122 sc->sc_cacheline = cba->cba_cacheline; 123 sc->sc_max_lattimer = MIN(0xf8, cba->cba_max_lattimer); 124 125 aprint_naive("\n"); 126 aprint_normal(": bus %d", sc->sc_bus); 127 if (bootverbose) 128 aprint_normal(" cacheline 0x%x, lattimer 0x%x", 129 sc->sc_cacheline, sc->sc_max_lattimer); 130 aprint_normal("\n"); 131 132 sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ 133 sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ 134 sc->sc_dmat = cba->cba_dmat; /* DMA tag */ 135 sc->sc_cc = cba->cba_cc; 136 sc->sc_cf = cba->cba_cf; 137 138 #if rbus 139 sc->sc_rbus_iot = cba->cba_rbus_iot; 140 sc->sc_rbus_memt = cba->cba_rbus_memt; 141 #endif 142 143 if (!pmf_device_register(self, NULL, NULL)) 144 aprint_error_dev(self, "couldn't establish power handler\n"); 145 } 146 147 STATIC int 148 cardbusdetach(device_t self, int flags) 149 { 150 int rc; 151 152 if ((rc = config_detach_children(self, flags)) != 0) 153 return rc; 154 155 pmf_device_deregister(self); 156 return 0; 157 } 158 159 static int 160 cardbus_read_tuples(struct cardbus_attach_args *ca, cardbusreg_t cis_ptr, 161 u_int8_t *tuples, size_t len) 162 { 163 struct cardbus_softc *sc = ca->ca_ct->ct_sc; 164 cardbus_chipset_tag_t cc = ca->ca_ct->ct_cc; 165 cardbus_function_tag_t cf = ca->ca_ct->ct_cf; 166 cardbustag_t tag = ca->ca_tag; 167 cardbusreg_t command; 168 bus_space_tag_t bar_tag; 169 bus_space_handle_t bar_memh; 170 bus_size_t bar_size; 171 bus_addr_t bar_addr; 172 cardbusreg_t reg; 173 int found = 0; 174 int cardbus_space = cis_ptr & CARDBUS_CIS_ASIMASK; 175 int i, j; 176 177 memset(tuples, 0, len); 178 179 cis_ptr = cis_ptr & CARDBUS_CIS_ADDRMASK; 180 181 switch (cardbus_space) { 182 case CARDBUS_CIS_ASI_TUPLE: 183 DPRINTF(("%s: reading CIS data from configuration space\n", 184 device_xname(sc->sc_dev))); 185 for (i = cis_ptr, j = 0; i < 0xff; i += 4) { 186 u_int32_t e = (*cf->cardbus_conf_read)(cc, tag, i); 187 tuples[j] = 0xff & e; 188 e >>= 8; 189 tuples[j + 1] = 0xff & e; 190 e >>= 8; 191 tuples[j + 2] = 0xff & e; 192 e >>= 8; 193 tuples[j + 3] = 0xff & e; 194 j += 4; 195 } 196 found++; 197 break; 198 199 case CARDBUS_CIS_ASI_BAR0: 200 case CARDBUS_CIS_ASI_BAR1: 201 case CARDBUS_CIS_ASI_BAR2: 202 case CARDBUS_CIS_ASI_BAR3: 203 case CARDBUS_CIS_ASI_BAR4: 204 case CARDBUS_CIS_ASI_BAR5: 205 case CARDBUS_CIS_ASI_ROM: 206 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 207 reg = CARDBUS_ROM_REG; 208 DPRINTF(("%s: reading CIS data from ROM\n", 209 device_xname(sc->sc_dev))); 210 } else { 211 reg = CARDBUS_CIS_ASI_BAR(cardbus_space); 212 DPRINTF(("%s: reading CIS data from BAR%d\n", 213 device_xname(sc->sc_dev), cardbus_space - 1)); 214 } 215 216 /* 217 * XXX zero register so mapreg_map doesn't get confused by old 218 * contents. 219 */ 220 cardbus_conf_write(cc, cf, tag, reg, 0); 221 if (Cardbus_mapreg_map(ca->ca_ct, reg, 222 CARDBUS_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 223 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { 224 aprint_error_dev(sc->sc_dev, "failed to map memory\n"); 225 return (1); 226 } 227 aprint_debug_dev(sc->sc_dev, "mapped %ju bytes at 0x%jx\n", 228 (uintmax_t)bar_size, (uintmax_t)bar_addr); 229 230 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 231 cardbusreg_t exrom; 232 int save; 233 struct cardbus_rom_image_head rom_image; 234 struct cardbus_rom_image *p; 235 236 save = splhigh(); 237 /* enable rom address decoder */ 238 exrom = cardbus_conf_read(cc, cf, tag, reg); 239 cardbus_conf_write(cc, cf, tag, reg, exrom | 1); 240 241 command = cardbus_conf_read(cc, cf, tag, 242 CARDBUS_COMMAND_STATUS_REG); 243 cardbus_conf_write(cc, cf, tag, 244 CARDBUS_COMMAND_STATUS_REG, 245 command | CARDBUS_COMMAND_MEM_ENABLE); 246 247 if (cardbus_read_exrom(bar_tag, bar_memh, &rom_image)) 248 goto out; 249 250 SIMPLEQ_FOREACH(p, &rom_image, next) { 251 if (p->rom_image == 252 CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { 253 bus_space_read_region_1(p->romt, 254 p->romh, CARDBUS_CIS_ADDR(cis_ptr), 255 tuples, MIN(p->image_size, len)); 256 found++; 257 break; 258 } 259 } 260 while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { 261 SIMPLEQ_REMOVE_HEAD(&rom_image, next); 262 free(p, M_DEVBUF); 263 } 264 out: 265 exrom = cardbus_conf_read(cc, cf, tag, reg); 266 cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); 267 splx(save); 268 } else { 269 command = cardbus_conf_read(cc, cf, tag, 270 CARDBUS_COMMAND_STATUS_REG); 271 cardbus_conf_write(cc, cf, tag, 272 CARDBUS_COMMAND_STATUS_REG, 273 command | CARDBUS_COMMAND_MEM_ENABLE); 274 /* XXX byte order? */ 275 bus_space_read_region_1(bar_tag, bar_memh, 276 cis_ptr, tuples, 277 MIN(bar_size - MIN(bar_size, cis_ptr), len)); 278 found++; 279 } 280 command = cardbus_conf_read(cc, cf, tag, 281 CARDBUS_COMMAND_STATUS_REG); 282 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, 283 command & ~CARDBUS_COMMAND_MEM_ENABLE); 284 cardbus_conf_write(cc, cf, tag, reg, 0); 285 286 Cardbus_mapreg_unmap(ca->ca_ct, reg, bar_tag, bar_memh, 287 bar_size); 288 break; 289 290 #ifdef DIAGNOSTIC 291 default: 292 panic("%s: bad CIS space (%d)", device_xname(sc->sc_dev), 293 cardbus_space); 294 #endif 295 } 296 return (!found); 297 } 298 299 static void 300 parse_tuple(u_int8_t *tuple, int len, void *data) 301 { 302 struct cardbus_cis_info *cis = data; 303 char *p; 304 int i, bar_index; 305 306 switch (tuple[0]) { 307 case PCMCIA_CISTPL_MANFID: 308 if (tuple[1] != 4) { 309 DPRINTF(("%s: wrong length manufacturer id (%d)\n", 310 __func__, tuple[1])); 311 break; 312 } 313 cis->manufacturer = tuple[2] | (tuple[3] << 8); 314 cis->product = tuple[4] | (tuple[5] << 8); 315 break; 316 317 case PCMCIA_CISTPL_VERS_1: 318 memcpy(cis->cis1_info_buf, tuple + 2, tuple[1]); 319 i = 0; 320 p = cis->cis1_info_buf + 2; 321 while (i < 322 sizeof(cis->cis1_info) / sizeof(cis->cis1_info[0])) { 323 if (p >= cis->cis1_info_buf + tuple[1] || *p == '\xff') 324 break; 325 cis->cis1_info[i++] = p; 326 while (*p != '\0' && *p != '\xff') 327 p++; 328 if (*p == '\0') 329 p++; 330 } 331 break; 332 333 case PCMCIA_CISTPL_BAR: 334 if (tuple[1] != 6) { 335 DPRINTF(("%s: BAR with short length (%d)\n", 336 __func__, tuple[1])); 337 break; 338 } 339 bar_index = tuple[2] & 7; 340 if (bar_index == 0) { 341 DPRINTF(("%s: invalid ASI in BAR tuple\n", __func__)); 342 break; 343 } 344 bar_index--; 345 cis->bar[bar_index].flags = tuple[2]; 346 cis->bar[bar_index].size = 347 (tuple[4] << 0) | 348 (tuple[5] << 8) | 349 (tuple[6] << 16) | 350 (tuple[7] << 24); 351 break; 352 353 case PCMCIA_CISTPL_FUNCID: 354 cis->funcid = tuple[2]; 355 break; 356 357 case PCMCIA_CISTPL_FUNCE: 358 switch (cis->funcid) { 359 case PCMCIA_FUNCTION_SERIAL: 360 if (tuple[1] >= 2 && 361 /* XXX PCMCIA_TPLFE_TYPE_SERIAL_??? */ 362 tuple[2] == 0) { 363 cis->funce.serial.uart_type = tuple[3] & 0x1f; 364 cis->funce.serial.uart_present = 1; 365 } 366 break; 367 368 case PCMCIA_FUNCTION_NETWORK: 369 if (tuple[1] >= 8 && 370 tuple[2] == PCMCIA_TPLFE_TYPE_LAN_NID) { 371 if (tuple[3] > 372 sizeof(cis->funce.network.netid)) { 373 DPRINTF(("%s: unknown network id type " 374 "(len = %d)\n", 375 __func__, tuple[3])); 376 } else { 377 cis->funce.network.netid_present = 1; 378 memcpy(cis->funce.network.netid, 379 tuple + 4, tuple[3]); 380 } 381 } 382 break; 383 } 384 break; 385 } 386 } 387 388 /* 389 * int cardbus_attach_card(struct cardbus_softc *sc) 390 * 391 * This function attaches the card on the slot: turns on power, 392 * reads and analyses tuple, sets configuration index. 393 * 394 * This function returns the number of recognised device functions. 395 * If no functions are recognised, return 0. 396 */ 397 int 398 cardbus_attach_card(struct cardbus_softc *sc) 399 { 400 cardbus_chipset_tag_t cc; 401 cardbus_function_tag_t cf; 402 int cdstatus; 403 static int wildcard[CARDBUSCF_NLOCS] = { 404 CARDBUSCF_FUNCTION_DEFAULT 405 }; 406 407 cc = sc->sc_cc; 408 cf = sc->sc_cf; 409 410 DPRINTF(("cardbus_attach_card: cb%d start\n", 411 device_unit(sc->sc_dev))); 412 413 /* inspect initial voltage */ 414 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 415 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 416 device_unit(sc->sc_dev))); 417 return (0); 418 } 419 420 device_pmf_driver_set_child_register(sc->sc_dev, cardbus_child_register); 421 cardbus_rescan(sc->sc_dev, "cardbus", wildcard); 422 return (1); /* XXX */ 423 } 424 425 int 426 cardbus_rescan(device_t self, const char *ifattr, 427 const int *locators) 428 { 429 struct cardbus_softc *sc = device_private(self); 430 cardbus_chipset_tag_t cc; 431 cardbus_function_tag_t cf; 432 cardbustag_t tag; 433 cardbusreg_t id, class, cis_ptr; 434 cardbusreg_t bhlc, icr, lattimer; 435 int cdstatus; 436 int function, nfunction; 437 device_t csc; 438 cardbus_devfunc_t ct; 439 440 cc = sc->sc_cc; 441 cf = sc->sc_cf; 442 443 /* inspect initial voltage */ 444 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 445 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 446 device_unit(sc->sc_dev))); 447 return (0); 448 } 449 450 /* 451 * XXX use fake function 8 to keep power on during whole 452 * configuration. 453 */ 454 enable_function(sc, cdstatus, 8); 455 function = 0; 456 457 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 458 459 /* 460 * Wait until power comes up. Maxmum 500 ms. 461 * 462 * XXX What is this for? The bridge driver ought to have waited 463 * XXX already. 464 */ 465 { 466 int i; 467 468 for (i = 0; i < 5; ++i) { 469 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 470 if (id != 0xffffffff && id != 0) { 471 break; 472 } 473 if (cold) { /* before kernel thread invoked */ 474 delay(100 * 1000); 475 } else { /* thread context */ 476 if (tsleep((void *)sc, PCATCH, "cardbus", 477 hz / 10) != EWOULDBLOCK) { 478 break; 479 } 480 } 481 } 482 aprint_debug_dev(self, "id reg valid in %d iterations\n", i); 483 if (i == 5) { 484 return (EIO); 485 } 486 } 487 488 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 489 DPRINTF(("%s bhlc 0x%08x -> ", device_xname(sc->sc_dev), bhlc)); 490 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 491 492 for (function = 0; function < nfunction; function++) { 493 struct cardbus_attach_args ca; 494 int locs[CARDBUSCF_NLOCS]; 495 496 if (locators[CARDBUSCF_FUNCTION] != 497 CARDBUSCF_FUNCTION_DEFAULT && 498 locators[CARDBUSCF_FUNCTION] != function) 499 continue; 500 501 if (sc->sc_funcs[function]) 502 continue; 503 504 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 505 506 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 507 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 508 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 509 510 /* Invalid vendor ID value? */ 511 if (CARDBUS_VENDOR(id) == PCI_VENDOR_INVALID) { 512 continue; 513 } 514 515 DPRINTF(("cardbus_attach_card: " 516 "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 517 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 518 519 enable_function(sc, cdstatus, function); 520 521 /* clean up every BAR */ 522 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); 523 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); 524 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); 525 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); 526 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); 527 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); 528 cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); 529 530 /* set initial latency and cacheline size */ 531 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 532 icr = cardbus_conf_read(cc, cf, tag, CARDBUS_INTERRUPT_REG); 533 DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", 534 device_xname(sc->sc_dev), function, icr, bhlc)); 535 bhlc &= ~(CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT); 536 bhlc |= (sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << 537 CARDBUS_CACHELINE_SHIFT; 538 /* 539 * Set the initial value of the Latency Timer. 540 * 541 * While a PCI device owns the bus, its Latency 542 * Timer counts down bus cycles from its initial 543 * value to 0. Minimum Grant tells for how long 544 * the device wants to own the bus once it gets 545 * access, in units of 250ns. 546 * 547 * On a 33 MHz bus, there are 8 cycles per 250ns. 548 * So I multiply the Minimum Grant by 8 to find 549 * out the initial value of the Latency Timer. 550 * 551 * Avoid setting a Latency Timer less than 0x10, 552 * since the old code did not do that. 553 */ 554 lattimer = 555 MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); 556 if (PCI_LATTIMER(bhlc) < lattimer) { 557 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 558 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 559 } 560 561 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 562 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 563 DPRINTF(("0x%08x\n", bhlc)); 564 565 /* 566 * We need to allocate the ct here, since we might 567 * need it when reading the CIS 568 */ 569 if ((ct = malloc(sizeof(struct cardbus_devfunc), 570 M_DEVBUF, M_NOWAIT)) == NULL) { 571 panic("no room for cardbus_tag"); 572 } 573 574 ct->ct_bhlc = bhlc; 575 ct->ct_cc = sc->sc_cc; 576 ct->ct_cf = sc->sc_cf; 577 ct->ct_bus = sc->sc_bus; 578 ct->ct_func = function; 579 ct->ct_sc = sc; 580 sc->sc_funcs[function] = ct; 581 582 memset(&ca, 0, sizeof(ca)); 583 584 ca.ca_ct = ct; 585 586 ca.ca_iot = sc->sc_iot; 587 ca.ca_memt = sc->sc_memt; 588 ca.ca_dmat = sc->sc_dmat; 589 590 #if rbus 591 ca.ca_rbus_iot = sc->sc_rbus_iot; 592 ca.ca_rbus_memt= sc->sc_rbus_memt; 593 #endif 594 595 ca.ca_tag = tag; 596 ca.ca_bus = sc->sc_bus; 597 ca.ca_function = function; 598 ca.ca_id = id; 599 ca.ca_class = class; 600 601 ca.ca_intrline = sc->sc_intrline; 602 603 if (cis_ptr != 0) { 604 #define TUPLESIZE 2048 605 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); 606 if (cardbus_read_tuples(&ca, cis_ptr, 607 tuple, TUPLESIZE)) { 608 printf("cardbus_attach_card: " 609 "failed to read CIS\n"); 610 } else { 611 #ifdef CARDBUS_DEBUG 612 decode_tuples(tuple, TUPLESIZE, 613 print_tuple, NULL); 614 #endif 615 decode_tuples(tuple, TUPLESIZE, 616 parse_tuple, &ca.ca_cis); 617 } 618 free(tuple, M_DEVBUF); 619 } 620 621 locs[CARDBUSCF_FUNCTION] = function; 622 623 if ((csc = config_found_sm_loc(sc->sc_dev, "cardbus", locs, 624 &ca, cardbusprint, config_stdsubmatch)) == NULL) { 625 /* do not match */ 626 disable_function(sc, function); 627 sc->sc_funcs[function] = NULL; 628 free(ct, M_DEVBUF); 629 } else { 630 /* found */ 631 ct->ct_device = csc; 632 } 633 } 634 /* 635 * XXX power down pseudo function 8 (this will power down the card 636 * if no functions were attached). 637 */ 638 disable_function(sc, 8); 639 640 return (0); 641 } 642 643 static int 644 cardbusprint(void *aux, const char *pnp) 645 { 646 struct cardbus_attach_args *ca = aux; 647 char devinfo[256]; 648 int i; 649 650 if (pnp) { 651 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, 652 sizeof(devinfo)); 653 for (i = 0; i < 4; i++) { 654 if (ca->ca_cis.cis1_info[i] == NULL) 655 break; 656 if (i) 657 aprint_normal(", "); 658 aprint_normal("%s", ca->ca_cis.cis1_info[i]); 659 } 660 aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", 661 i ? " " : "", 662 ca->ca_cis.manufacturer, ca->ca_cis.product); 663 aprint_normal(" %s at %s", devinfo, pnp); 664 } 665 aprint_normal(" function %d", ca->ca_function); 666 667 return (UNCONF); 668 } 669 670 /* 671 * void cardbus_detach_card(struct cardbus_softc *sc) 672 * 673 * This function detaches the card on the slot: detach device data 674 * structure and turns off the power. 675 * 676 * This function must not be called under interrupt context. 677 */ 678 void 679 cardbus_detach_card(struct cardbus_softc *sc) 680 { 681 int f; 682 struct cardbus_devfunc *ct; 683 684 for (f = 0; f < 8; f++) { 685 ct = sc->sc_funcs[f]; 686 if (!ct) 687 continue; 688 689 DPRINTF(("%s: detaching %s\n", device_xname(sc->sc_dev), 690 device_xname(ct->ct_device))); 691 /* call device detach function */ 692 693 if (config_detach(ct->ct_device, 0) != 0) { 694 aprint_error_dev(sc->sc_dev, 695 "cannot detach dev %s, function %d\n", 696 device_xname(ct->ct_device), ct->ct_func); 697 } 698 } 699 700 sc->sc_poweron_func = 0; 701 (*sc->sc_cf->cardbus_power)(sc->sc_cc, 702 CARDBUS_VCC_0V | CARDBUS_VPP_0V); 703 } 704 705 void 706 cardbus_childdetached(device_t self, device_t child) 707 { 708 struct cardbus_softc *sc = device_private(self); 709 struct cardbus_devfunc *ct; 710 711 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 712 KASSERT(ct->ct_device == child); 713 714 sc->sc_poweron_func &= ~(1 << ct->ct_func); 715 sc->sc_funcs[ct->ct_func] = NULL; 716 free(ct, M_DEVBUF); 717 } 718 719 /* 720 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 721 * Interrupt handler of pccard. 722 * args: 723 * cardbus_chipset_tag_t *cc 724 * int irq: 725 */ 726 void * 727 cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 728 cardbus_intr_line_t irq, int level, int (*func)(void *), void *arg) 729 { 730 731 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 732 return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); 733 } 734 735 /* 736 * void cardbus_intr_disestablish(cc, cf, handler) 737 * Interrupt handler of pccard. 738 * args: 739 * cardbus_chipset_tag_t *cc 740 */ 741 void 742 cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 743 void *handler) 744 { 745 746 DPRINTF(("- pccard_intr_disestablish\n")); 747 (*cf->cardbus_intr_disestablish)(cc, handler); 748 } 749 750 /* 751 * XXX this should be merged with cardbus_function_{enable,disable}, 752 * but we don't have a ct when these functions are called. 753 */ 754 static void 755 enable_function(struct cardbus_softc *sc, int cdstatus, int function) 756 { 757 758 if (sc->sc_poweron_func == 0) { 759 /* switch to 3V and/or wait for power to stabilize */ 760 if (cdstatus & CARDBUS_3V_CARD) { 761 /* 762 * sc_poweron_func must be substituted before 763 * entering sleep, in order to avoid turn on 764 * power twice. 765 */ 766 sc->sc_poweron_func |= (1 << function); 767 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); 768 } else { 769 /* No cards other than 3.3V cards. */ 770 return; 771 } 772 (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); 773 } 774 sc->sc_poweron_func |= (1 << function); 775 } 776 777 static void 778 disable_function(struct cardbus_softc *sc, int function) 779 { 780 bool powerdown; 781 cardbus_devfunc_t ct; 782 device_t dv; 783 int i; 784 785 sc->sc_poweron_func &= ~(1 << function); 786 if (sc->sc_poweron_func != 0) 787 return; 788 for (i = 0; i < __arraycount(sc->sc_funcs); i++) { 789 if ((ct = sc->sc_funcs[i]) == NULL) 790 continue; 791 dv = ct->ct_device; 792 if (prop_dictionary_get_bool(device_properties(dv), 793 "pmf-powerdown", &powerdown) && !powerdown) 794 return; 795 } 796 /* power-off because no functions are enabled */ 797 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); 798 } 799 800 /* 801 * int cardbus_function_enable(struct cardbus_softc *sc, int func) 802 * 803 * This function enables a function on a card. When no power is 804 * applied on the card, power will be applied on it. 805 */ 806 int 807 cardbus_function_enable(struct cardbus_softc *sc, int func) 808 { 809 cardbus_chipset_tag_t cc = sc->sc_cc; 810 cardbus_function_tag_t cf = sc->sc_cf; 811 cardbus_devfunc_t ct; 812 cardbusreg_t command; 813 cardbustag_t tag; 814 815 DPRINTF(("entering cardbus_function_enable... ")); 816 817 /* entering critical area */ 818 819 /* XXX: sc_vold should be used */ 820 enable_function(sc, CARDBUS_3V_CARD, func); 821 822 /* exiting critical area */ 823 824 tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); 825 826 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 827 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | 828 CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 829 830 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 831 832 if ((ct = sc->sc_funcs[func]) != NULL) 833 Cardbus_conf_write(ct, tag, CARDBUS_BHLC_REG, ct->ct_bhlc); 834 835 cardbus_free_tag(cc, cf, tag); 836 837 DPRINTF(("%x\n", sc->sc_poweron_func)); 838 839 return (0); 840 } 841 842 /* 843 * int cardbus_function_disable(struct cardbus_softc *, int func) 844 * 845 * This function disable a function on a card. When no functions are 846 * enabled, it turns off the power. 847 */ 848 int 849 cardbus_function_disable(struct cardbus_softc *sc, int func) 850 { 851 852 DPRINTF(("entering cardbus_function_disable... ")); 853 854 disable_function(sc, func); 855 856 return (0); 857 } 858 859 /* 860 * int cardbus_get_capability(cardbus_chipset_tag_t cc, 861 * cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, 862 * cardbusreg_t *value) 863 * 864 * Find the specified PCI capability. 865 */ 866 int 867 cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 868 cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) 869 { 870 cardbusreg_t reg; 871 unsigned int ofs; 872 873 reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 874 if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) 875 return (0); 876 877 ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, 878 PCI_CAPLISTPTR_REG)); 879 while (ofs != 0) { 880 #ifdef DIAGNOSTIC 881 if ((ofs & 3) || (ofs < 0x40)) 882 panic("cardbus_get_capability"); 883 #endif 884 reg = cardbus_conf_read(cc, cf, tag, ofs); 885 if (PCI_CAPLIST_CAP(reg) == capid) { 886 if (offset) 887 *offset = ofs; 888 if (value) 889 *value = reg; 890 return (1); 891 } 892 ofs = PCI_CAPLIST_NEXT(reg); 893 } 894 895 return (0); 896 } 897 898 /* 899 * below this line, there are some functions for decoding tuples. 900 * They should go out from this file. 901 */ 902 903 static u_int8_t * 904 decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); 905 906 static int 907 decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) 908 { 909 u_int8_t *tp = tuple; 910 911 if (PCMCIA_CISTPL_LINKTARGET != *tuple) { 912 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 913 return (0); 914 } 915 916 while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) 917 ; 918 919 return (1); 920 } 921 922 static u_int8_t * 923 decode_tuple(u_int8_t *tuple, u_int8_t *end, 924 tuple_decode_func func, void *data) 925 { 926 u_int8_t type; 927 u_int8_t len; 928 929 type = tuple[0]; 930 switch (type) { 931 case PCMCIA_CISTPL_NULL: 932 case PCMCIA_CISTPL_END: 933 len = 1; 934 break; 935 default: 936 if (tuple + 2 > end) 937 return (NULL); 938 len = tuple[1] + 2; 939 break; 940 } 941 942 if (tuple + len > end) 943 return (NULL); 944 945 (*func)(tuple, len, data); 946 947 if (type == PCMCIA_CISTPL_END || tuple + len == end) 948 return (NULL); 949 950 return (tuple + len); 951 } 952 953 /* 954 * XXX: this is another reason why this code should be shared with PCI. 955 */ 956 static int 957 cardbus_get_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 958 cardbusreg_t *state, int offset) 959 { 960 cardbusreg_t value, now; 961 cardbus_chipset_tag_t cc = ct->ct_cc; 962 cardbus_function_tag_t cf = ct->ct_cf; 963 964 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 965 now = value & PCI_PMCSR_STATE_MASK; 966 switch (now) { 967 case PCI_PMCSR_STATE_D0: 968 case PCI_PMCSR_STATE_D1: 969 case PCI_PMCSR_STATE_D2: 970 case PCI_PMCSR_STATE_D3: 971 *state = now; 972 return 0; 973 default: 974 return EINVAL; 975 } 976 } 977 978 int 979 cardbus_get_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, 980 cardbusreg_t *state) 981 { 982 cardbus_chipset_tag_t cc = ct->ct_cc; 983 cardbus_function_tag_t cf = ct->ct_cf; 984 int offset; 985 cardbusreg_t value; 986 987 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) 988 return EOPNOTSUPP; 989 990 return cardbus_get_powerstate_int(ct, tag, state, offset); 991 } 992 993 static int 994 cardbus_set_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 995 cardbusreg_t state, int offset, cardbusreg_t cap_reg) 996 { 997 cardbus_chipset_tag_t cc = ct->ct_cc; 998 cardbus_function_tag_t cf = ct->ct_cf; 999 1000 cardbusreg_t value, cap, now; 1001 1002 KASSERT((offset & 0x3) == 0); 1003 1004 cap = cap_reg >> PCI_PMCR_SHIFT; 1005 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 1006 now = value & PCI_PMCSR_STATE_MASK; 1007 value &= ~PCI_PMCSR_STATE_MASK; 1008 1009 if (now == state) 1010 return 0; 1011 switch (state) { 1012 case PCI_PMCSR_STATE_D0: 1013 break; 1014 case PCI_PMCSR_STATE_D1: 1015 if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) { 1016 printf("invalid transition from %d to D1\n", (int)now); 1017 return EINVAL; 1018 } 1019 if (!(cap & PCI_PMCR_D1SUPP)) { 1020 printf("D1 not supported\n"); 1021 return EOPNOTSUPP; 1022 } 1023 break; 1024 case PCI_PMCSR_STATE_D2: 1025 if (now == PCI_PMCSR_STATE_D3) { 1026 printf("invalid transition from %d to D2\n", (int)now); 1027 return EINVAL; 1028 } 1029 if (!(cap & PCI_PMCR_D2SUPP)) { 1030 printf("D2 not supported\n"); 1031 return EOPNOTSUPP; 1032 } 1033 break; 1034 case PCI_PMCSR_STATE_D3: 1035 break; 1036 default: 1037 return EINVAL; 1038 } 1039 value |= state; 1040 cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); 1041 if (state == PCI_PMCSR_STATE_D3 || now == PCI_PMCSR_STATE_D3) 1042 DELAY(10000); 1043 else if (state == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D2) 1044 DELAY(200); 1045 1046 return 0; 1047 } 1048 1049 int 1050 cardbus_set_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, cardbusreg_t state) 1051 { 1052 cardbus_chipset_tag_t cc = ct->ct_cc; 1053 cardbus_function_tag_t cf = ct->ct_cf; 1054 int offset; 1055 cardbusreg_t value; 1056 1057 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, 1058 &value)) 1059 return EOPNOTSUPP; 1060 1061 return cardbus_set_powerstate_int(ct, tag, state, offset, value); 1062 } 1063 1064 #ifdef CARDBUS_DEBUG 1065 static const char *tuple_name(int); 1066 static const char *tuple_names[] = { 1067 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 1068 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 1069 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 1070 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 1071 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 1072 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 1073 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 1074 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 1075 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 1076 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 1077 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 1078 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 1079 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 1080 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 1081 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 1082 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 1083 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 1084 "DATE", "BATTERY", "ORG" 1085 }; 1086 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 1087 1088 static const char * 1089 tuple_name(int type) 1090 { 1091 1092 if (0 <= type && type < NAME_LEN(tuple_names)) { 1093 return (tuple_names[type]); 1094 } else if (type == 0xff) { 1095 return ("END"); 1096 } else { 1097 return ("Reserved"); 1098 } 1099 } 1100 1101 static void 1102 print_tuple(u_int8_t *tuple, int len, void *data) 1103 { 1104 int i; 1105 1106 printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); 1107 1108 for (i = 0; i < len; ++i) { 1109 if (i % 16 == 0) { 1110 printf(" 0x%2x:", i); 1111 } 1112 printf(" %x", tuple[i]); 1113 if (i % 16 == 15) { 1114 printf("\n"); 1115 } 1116 } 1117 if (i % 16 != 0) { 1118 printf("\n"); 1119 } 1120 } 1121 #endif 1122 1123 void 1124 cardbus_conf_capture(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1125 cardbustag_t tag, struct cardbus_conf_state *pcs) 1126 { 1127 int off; 1128 1129 for (off = 0; off < 16; off++) 1130 pcs->reg[off] = cardbus_conf_read(cc, cf, tag, (off * 4)); 1131 } 1132 1133 void 1134 cardbus_conf_restore(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1135 cardbustag_t tag, struct cardbus_conf_state *pcs) 1136 { 1137 int off; 1138 cardbusreg_t val; 1139 1140 for (off = 15; off >= 0; off--) { 1141 val = cardbus_conf_read(cc, cf, tag, (off * 4)); 1142 if (val != pcs->reg[off]) 1143 cardbus_conf_write(cc, cf,tag, (off * 4), pcs->reg[off]); 1144 } 1145 } 1146 1147 void 1148 cardbus_disable_retry(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1149 cardbustag_t tag) 1150 { 1151 /* See comment on sys/dev/pci/pci.c:pci_disable_retry() for 1152 * the reason I comment-out this code. 1153 */ 1154 #if 0 1155 cardbusreg_t retry; 1156 1157 retry = cardbus_conf_read(cc, cf, tag, PCI_RETRY_TIMEOUT_REG); 1158 retry &= ~PCI_RETRY_TIMEOUT_REG_MASK; 1159 cardbus_conf_write(cc, cf, tag, PCI_RETRY_TIMEOUT_REG, retry); 1160 #endif 1161 } 1162 1163 struct cardbus_child_power { 1164 struct cardbus_conf_state p_cardbusconf; 1165 cardbus_devfunc_t p_ct; 1166 cardbustag_t p_tag; 1167 cardbus_chipset_tag_t p_cc; 1168 cardbus_function_tag_t p_cf; 1169 cardbusreg_t p_pm_cap; 1170 bool p_has_pm; 1171 int p_pm_offset; 1172 }; 1173 1174 static bool 1175 cardbus_child_suspend(device_t dv PMF_FN_ARGS) 1176 { 1177 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1178 1179 cardbus_conf_capture(priv->p_cc, priv->p_cf, priv->p_tag, 1180 &priv->p_cardbusconf); 1181 1182 if (priv->p_has_pm && 1183 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1184 PCI_PMCSR_STATE_D3, priv->p_pm_offset, priv->p_pm_cap)) { 1185 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1186 return false; 1187 } 1188 1189 Cardbus_function_disable(priv->p_ct); 1190 1191 return true; 1192 } 1193 1194 static bool 1195 cardbus_child_resume(device_t dv PMF_FN_ARGS) 1196 { 1197 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1198 1199 Cardbus_function_enable(priv->p_ct); 1200 1201 if (priv->p_has_pm && 1202 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1203 PCI_PMCSR_STATE_D0, priv->p_pm_offset, priv->p_pm_cap)) { 1204 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1205 return false; 1206 } 1207 1208 cardbus_conf_restore(priv->p_cc, priv->p_cf, priv->p_tag, 1209 &priv->p_cardbusconf); 1210 1211 return true; 1212 } 1213 1214 static void 1215 cardbus_child_deregister(device_t dv) 1216 { 1217 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1218 1219 free(priv, M_DEVBUF); 1220 } 1221 1222 static bool 1223 cardbus_child_register(device_t child) 1224 { 1225 device_t self = device_parent(child); 1226 struct cardbus_softc *sc = device_private(self); 1227 struct cardbus_devfunc *ct; 1228 struct cardbus_child_power *priv; 1229 int off; 1230 cardbusreg_t reg; 1231 1232 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 1233 1234 priv = malloc(sizeof(*priv), M_DEVBUF, M_WAITOK); 1235 1236 priv->p_ct = ct; 1237 priv->p_cc = ct->ct_cc; 1238 priv->p_cf = ct->ct_cf; 1239 priv->p_tag = cardbus_make_tag(priv->p_cc, priv->p_cf, ct->ct_bus, 1240 ct->ct_func); 1241 1242 if (cardbus_get_capability(priv->p_cc, priv->p_cf, priv->p_tag, 1243 PCI_CAP_PWRMGMT, &off, ®)) { 1244 priv->p_has_pm = true; 1245 priv->p_pm_offset = off; 1246 priv->p_pm_cap = reg; 1247 } else { 1248 priv->p_has_pm = false; 1249 priv->p_pm_offset = -1; 1250 } 1251 1252 device_pmf_bus_register(child, priv, cardbus_child_suspend, 1253 cardbus_child_resume, 0, cardbus_child_deregister); 1254 1255 return true; 1256 } 1257
Indexes created Tue Sep 30 17:09:57 GMT 2025