cardbus.c revision 1.92
1 /* $NetBSD: cardbus.c,v 1.92 2008/06/11 07:01:54 dyoung 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 1.92 2008/06/11 07:01:54 dyoung 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 struct cbslot_attach_args *cba = aux; 109 110 if (strcmp(cba->cba_busname, cf->cf_name)) { 111 DPRINTF(("cardbusmatch: busname differs %s <=> %s\n", 112 cba->cba_busname, cf->cf_name)); 113 return (0); 114 } 115 116 return (1); 117 } 118 119 STATIC void 120 cardbusattach(device_t parent, device_t self, void *aux) 121 { 122 struct cardbus_softc *sc = device_private(self); 123 struct cbslot_attach_args *cba = aux; 124 125 sc->sc_bus = cba->cba_bus; 126 sc->sc_intrline = cba->cba_intrline; 127 sc->sc_cacheline = cba->cba_cacheline; 128 sc->sc_max_lattimer = MIN(0xf8, cba->cba_max_lattimer); 129 130 aprint_naive("\n"); 131 aprint_normal(": bus %d", sc->sc_bus); 132 if (bootverbose) 133 aprint_normal(" cacheline 0x%x, lattimer 0x%x", 134 sc->sc_cacheline, sc->sc_max_lattimer); 135 aprint_normal("\n"); 136 137 sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ 138 sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ 139 sc->sc_dmat = cba->cba_dmat; /* DMA tag */ 140 sc->sc_cc = cba->cba_cc; 141 sc->sc_cf = cba->cba_cf; 142 143 #if rbus 144 sc->sc_rbus_iot = cba->cba_rbus_iot; 145 sc->sc_rbus_memt = cba->cba_rbus_memt; 146 #endif 147 148 if (!pmf_device_register(self, NULL, NULL)) 149 aprint_error_dev(self, "couldn't establish power handler\n"); 150 } 151 152 STATIC int 153 cardbusdetach(device_t self, int flags) 154 { 155 int rc; 156 157 if ((rc = config_detach_children(self, flags)) != 0) 158 return rc; 159 160 pmf_device_deregister(self); 161 return 0; 162 } 163 164 static int 165 cardbus_read_tuples(struct cardbus_attach_args *ca, cardbusreg_t cis_ptr, 166 u_int8_t *tuples, size_t len) 167 { 168 struct cardbus_softc *sc = ca->ca_ct->ct_sc; 169 cardbus_chipset_tag_t cc = ca->ca_ct->ct_cc; 170 cardbus_function_tag_t cf = ca->ca_ct->ct_cf; 171 cardbustag_t tag = ca->ca_tag; 172 cardbusreg_t command; 173 bus_space_tag_t bar_tag; 174 bus_space_handle_t bar_memh; 175 bus_size_t bar_size; 176 bus_addr_t bar_addr; 177 cardbusreg_t reg; 178 int found = 0; 179 int cardbus_space = cis_ptr & CARDBUS_CIS_ASIMASK; 180 int i, j; 181 182 memset(tuples, 0, len); 183 184 cis_ptr = cis_ptr & CARDBUS_CIS_ADDRMASK; 185 186 switch (cardbus_space) { 187 case CARDBUS_CIS_ASI_TUPLE: 188 DPRINTF(("%s: reading CIS data from configuration space\n", 189 device_xname(&sc->sc_dev))); 190 for (i = cis_ptr, j = 0; i < 0xff; i += 4) { 191 u_int32_t e = (*cf->cardbus_conf_read)(cc, tag, i); 192 tuples[j] = 0xff & e; 193 e >>= 8; 194 tuples[j + 1] = 0xff & e; 195 e >>= 8; 196 tuples[j + 2] = 0xff & e; 197 e >>= 8; 198 tuples[j + 3] = 0xff & e; 199 j += 4; 200 } 201 found++; 202 break; 203 204 case CARDBUS_CIS_ASI_BAR0: 205 case CARDBUS_CIS_ASI_BAR1: 206 case CARDBUS_CIS_ASI_BAR2: 207 case CARDBUS_CIS_ASI_BAR3: 208 case CARDBUS_CIS_ASI_BAR4: 209 case CARDBUS_CIS_ASI_BAR5: 210 case CARDBUS_CIS_ASI_ROM: 211 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 212 reg = CARDBUS_ROM_REG; 213 DPRINTF(("%s: reading CIS data from ROM\n", 214 device_xname(&sc->sc_dev))); 215 } else { 216 reg = CARDBUS_CIS_ASI_BAR(cardbus_space); 217 DPRINTF(("%s: reading CIS data from BAR%d\n", 218 device_xname(&sc->sc_dev), cardbus_space - 1)); 219 } 220 221 /* 222 * XXX zero register so mapreg_map doesn't get confused by old 223 * contents. 224 */ 225 cardbus_conf_write(cc, cf, tag, reg, 0); 226 if (Cardbus_mapreg_map(ca->ca_ct, reg, 227 CARDBUS_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 228 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { 229 aprint_error_dev(&sc->sc_dev, "failed to map memory\n"); 230 return (1); 231 } 232 aprint_debug_dev(&sc->sc_dev, "mapped %ju bytes at 0x%jx\n", 233 (uintmax_t)bar_size, (uintmax_t)bar_addr); 234 235 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 236 cardbusreg_t exrom; 237 int save; 238 struct cardbus_rom_image_head rom_image; 239 struct cardbus_rom_image *p; 240 241 save = splhigh(); 242 /* enable rom address decoder */ 243 exrom = cardbus_conf_read(cc, cf, tag, reg); 244 cardbus_conf_write(cc, cf, tag, reg, exrom | 1); 245 246 command = cardbus_conf_read(cc, cf, tag, 247 CARDBUS_COMMAND_STATUS_REG); 248 cardbus_conf_write(cc, cf, tag, 249 CARDBUS_COMMAND_STATUS_REG, 250 command | CARDBUS_COMMAND_MEM_ENABLE); 251 252 if (cardbus_read_exrom(bar_tag, bar_memh, &rom_image)) 253 goto out; 254 255 SIMPLEQ_FOREACH(p, &rom_image, next) { 256 if (p->rom_image == 257 CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { 258 bus_space_read_region_1(p->romt, 259 p->romh, CARDBUS_CIS_ADDR(cis_ptr), 260 tuples, MIN(p->image_size, len)); 261 found++; 262 break; 263 } 264 } 265 while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { 266 SIMPLEQ_REMOVE_HEAD(&rom_image, next); 267 free(p, M_DEVBUF); 268 } 269 out: 270 exrom = cardbus_conf_read(cc, cf, tag, reg); 271 cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); 272 splx(save); 273 } else { 274 command = cardbus_conf_read(cc, cf, tag, 275 CARDBUS_COMMAND_STATUS_REG); 276 cardbus_conf_write(cc, cf, tag, 277 CARDBUS_COMMAND_STATUS_REG, 278 command | CARDBUS_COMMAND_MEM_ENABLE); 279 /* XXX byte order? */ 280 bus_space_read_region_1(bar_tag, bar_memh, 281 cis_ptr, tuples, 282 MIN(bar_size - MIN(bar_size, cis_ptr), len)); 283 found++; 284 } 285 command = cardbus_conf_read(cc, cf, tag, 286 CARDBUS_COMMAND_STATUS_REG); 287 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, 288 command & ~CARDBUS_COMMAND_MEM_ENABLE); 289 cardbus_conf_write(cc, cf, tag, reg, 0); 290 291 Cardbus_mapreg_unmap(ca->ca_ct, reg, bar_tag, bar_memh, 292 bar_size); 293 break; 294 295 #ifdef DIAGNOSTIC 296 default: 297 panic("%s: bad CIS space (%d)", device_xname(&sc->sc_dev), 298 cardbus_space); 299 #endif 300 } 301 return (!found); 302 } 303 304 static void 305 parse_tuple(u_int8_t *tuple, int len, void *data) 306 { 307 struct cardbus_cis_info *cis = data; 308 char *p; 309 int i, bar_index; 310 311 switch (tuple[0]) { 312 case PCMCIA_CISTPL_MANFID: 313 if (tuple[1] != 4) { 314 DPRINTF(("%s: wrong length manufacturer id (%d)\n", 315 __func__, tuple[1])); 316 break; 317 } 318 cis->manufacturer = tuple[2] | (tuple[3] << 8); 319 cis->product = tuple[4] | (tuple[5] << 8); 320 break; 321 322 case PCMCIA_CISTPL_VERS_1: 323 memcpy(cis->cis1_info_buf, tuple + 2, tuple[1]); 324 i = 0; 325 p = cis->cis1_info_buf + 2; 326 while (i < 327 sizeof(cis->cis1_info) / sizeof(cis->cis1_info[0])) { 328 if (p >= cis->cis1_info_buf + tuple[1] || *p == '\xff') 329 break; 330 cis->cis1_info[i++] = p; 331 while (*p != '\0' && *p != '\xff') 332 p++; 333 if (*p == '\0') 334 p++; 335 } 336 break; 337 338 case PCMCIA_CISTPL_BAR: 339 if (tuple[1] != 6) { 340 DPRINTF(("%s: BAR with short length (%d)\n", 341 __func__, tuple[1])); 342 break; 343 } 344 bar_index = tuple[2] & 7; 345 if (bar_index == 0) { 346 DPRINTF(("%s: invalid ASI in BAR tuple\n", __func__)); 347 break; 348 } 349 bar_index--; 350 cis->bar[bar_index].flags = tuple[2]; 351 cis->bar[bar_index].size = 352 (tuple[4] << 0) | 353 (tuple[5] << 8) | 354 (tuple[6] << 16) | 355 (tuple[7] << 24); 356 break; 357 358 case PCMCIA_CISTPL_FUNCID: 359 cis->funcid = tuple[2]; 360 break; 361 362 case PCMCIA_CISTPL_FUNCE: 363 switch (cis->funcid) { 364 case PCMCIA_FUNCTION_SERIAL: 365 if (tuple[1] >= 2 && 366 /* XXX PCMCIA_TPLFE_TYPE_SERIAL_??? */ 367 tuple[2] == 0) { 368 cis->funce.serial.uart_type = tuple[3] & 0x1f; 369 cis->funce.serial.uart_present = 1; 370 } 371 break; 372 373 case PCMCIA_FUNCTION_NETWORK: 374 if (tuple[1] >= 8 && 375 tuple[2] == PCMCIA_TPLFE_TYPE_LAN_NID) { 376 if (tuple[3] > 377 sizeof(cis->funce.network.netid)) { 378 DPRINTF(("%s: unknown network id type " 379 "(len = %d)\n", 380 __func__, tuple[3])); 381 } else { 382 cis->funce.network.netid_present = 1; 383 memcpy(cis->funce.network.netid, 384 tuple + 4, tuple[3]); 385 } 386 } 387 break; 388 } 389 break; 390 } 391 } 392 393 /* 394 * int cardbus_attach_card(struct cardbus_softc *sc) 395 * 396 * This function attaches the card on the slot: turns on power, 397 * reads and analyses tuple, sets configuration index. 398 * 399 * This function returns the number of recognised device functions. 400 * If no functions are recognised, return 0. 401 */ 402 int 403 cardbus_attach_card(struct cardbus_softc *sc) 404 { 405 cardbus_chipset_tag_t cc; 406 cardbus_function_tag_t cf; 407 int cdstatus; 408 static int wildcard[CARDBUSCF_NLOCS] = { 409 CARDBUSCF_FUNCTION_DEFAULT 410 }; 411 412 cc = sc->sc_cc; 413 cf = sc->sc_cf; 414 415 DPRINTF(("cardbus_attach_card: cb%d start\n", 416 device_unit(&sc->sc_dev))); 417 418 /* inspect initial voltage */ 419 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 420 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 421 device_unit(&sc->sc_dev))); 422 return (0); 423 } 424 425 device_pmf_driver_set_child_register(&sc->sc_dev, cardbus_child_register); 426 cardbus_rescan(&sc->sc_dev, "cardbus", wildcard); 427 return (1); /* XXX */ 428 } 429 430 int 431 cardbus_rescan(device_t self, const char *ifattr, 432 const int *locators) 433 { 434 struct cardbus_softc *sc = device_private(self); 435 cardbus_chipset_tag_t cc; 436 cardbus_function_tag_t cf; 437 cardbustag_t tag; 438 cardbusreg_t id, class, cis_ptr; 439 cardbusreg_t bhlc, icr, lattimer; 440 int cdstatus; 441 int function, nfunction; 442 device_t csc; 443 cardbus_devfunc_t ct; 444 445 cc = sc->sc_cc; 446 cf = sc->sc_cf; 447 448 /* inspect initial voltage */ 449 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 450 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 451 device_unit(&sc->sc_dev))); 452 return (0); 453 } 454 455 /* 456 * XXX use fake function 8 to keep power on during whole 457 * configuration. 458 */ 459 enable_function(sc, cdstatus, 8); 460 function = 0; 461 462 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 463 464 /* 465 * Wait until power comes up. Maxmum 500 ms. 466 * 467 * XXX What is this for? The bridge driver ought to have waited 468 * XXX already. 469 */ 470 { 471 int i; 472 473 for (i = 0; i < 5; ++i) { 474 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 475 if (id != 0xffffffff && id != 0) { 476 break; 477 } 478 if (cold) { /* before kernel thread invoked */ 479 delay(100 * 1000); 480 } else { /* thread context */ 481 if (tsleep((void *)sc, PCATCH, "cardbus", 482 hz / 10) != EWOULDBLOCK) { 483 break; 484 } 485 } 486 } 487 aprint_debug_dev(self, "id reg valid in %d iterations\n", i); 488 if (i == 5) { 489 return (EIO); 490 } 491 } 492 493 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 494 DPRINTF(("%s bhlc 0x%08x -> ", device_xname(&sc->sc_dev), bhlc)); 495 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 496 497 for (function = 0; function < nfunction; function++) { 498 struct cardbus_attach_args ca; 499 int locs[CARDBUSCF_NLOCS]; 500 501 if (locators[CARDBUSCF_FUNCTION] != 502 CARDBUSCF_FUNCTION_DEFAULT && 503 locators[CARDBUSCF_FUNCTION] != function) 504 continue; 505 506 if (sc->sc_funcs[function]) 507 continue; 508 509 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 510 511 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 512 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 513 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 514 515 /* Invalid vendor ID value? */ 516 if (CARDBUS_VENDOR(id) == PCI_VENDOR_INVALID) { 517 continue; 518 } 519 520 DPRINTF(("cardbus_attach_card: " 521 "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 522 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 523 524 enable_function(sc, cdstatus, function); 525 526 /* clean up every BAR */ 527 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); 528 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); 529 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); 530 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); 531 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); 532 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); 533 cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); 534 535 /* set initial latency and cacheline size */ 536 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 537 icr = cardbus_conf_read(cc, cf, tag, CARDBUS_INTERRUPT_REG); 538 DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", 539 device_xname(&sc->sc_dev), function, icr, bhlc)); 540 bhlc &= ~(CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT); 541 bhlc |= (sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << 542 CARDBUS_CACHELINE_SHIFT; 543 /* 544 * Set the initial value of the Latency Timer. 545 * 546 * While a PCI device owns the bus, its Latency 547 * Timer counts down bus cycles from its initial 548 * value to 0. Minimum Grant tells for how long 549 * the device wants to own the bus once it gets 550 * access, in units of 250ns. 551 * 552 * On a 33 MHz bus, there are 8 cycles per 250ns. 553 * So I multiply the Minimum Grant by 8 to find 554 * out the initial value of the Latency Timer. 555 * 556 * Avoid setting a Latency Timer less than 0x10, 557 * since the old code did not do that. 558 */ 559 lattimer = 560 MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); 561 if (PCI_LATTIMER(bhlc) < lattimer) { 562 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 563 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 564 } 565 566 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 567 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 568 DPRINTF(("0x%08x\n", bhlc)); 569 570 /* 571 * We need to allocate the ct here, since we might 572 * need it when reading the CIS 573 */ 574 if ((ct = malloc(sizeof(struct cardbus_devfunc), 575 M_DEVBUF, M_NOWAIT)) == NULL) { 576 panic("no room for cardbus_tag"); 577 } 578 579 ct->ct_bhlc = bhlc; 580 ct->ct_cc = sc->sc_cc; 581 ct->ct_cf = sc->sc_cf; 582 ct->ct_bus = sc->sc_bus; 583 ct->ct_func = function; 584 ct->ct_sc = sc; 585 sc->sc_funcs[function] = ct; 586 587 memset(&ca, 0, sizeof(ca)); 588 589 ca.ca_ct = ct; 590 591 ca.ca_iot = sc->sc_iot; 592 ca.ca_memt = sc->sc_memt; 593 ca.ca_dmat = sc->sc_dmat; 594 595 #if rbus 596 ca.ca_rbus_iot = sc->sc_rbus_iot; 597 ca.ca_rbus_memt= sc->sc_rbus_memt; 598 #endif 599 600 ca.ca_tag = tag; 601 ca.ca_bus = sc->sc_bus; 602 ca.ca_function = function; 603 ca.ca_id = id; 604 ca.ca_class = class; 605 606 ca.ca_intrline = sc->sc_intrline; 607 608 if (cis_ptr != 0) { 609 #define TUPLESIZE 2048 610 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); 611 if (cardbus_read_tuples(&ca, cis_ptr, 612 tuple, TUPLESIZE)) { 613 printf("cardbus_attach_card: " 614 "failed to read CIS\n"); 615 } else { 616 #ifdef CARDBUS_DEBUG 617 decode_tuples(tuple, TUPLESIZE, 618 print_tuple, NULL); 619 #endif 620 decode_tuples(tuple, TUPLESIZE, 621 parse_tuple, &ca.ca_cis); 622 } 623 free(tuple, M_DEVBUF); 624 } 625 626 locs[CARDBUSCF_FUNCTION] = function; 627 628 if ((csc = config_found_sm_loc((void *)sc, "cardbus", locs, 629 &ca, cardbusprint, config_stdsubmatch)) == NULL) { 630 /* do not match */ 631 disable_function(sc, function); 632 sc->sc_funcs[function] = NULL; 633 free(ct, M_DEVBUF); 634 } else { 635 /* found */ 636 ct->ct_device = csc; 637 } 638 } 639 /* 640 * XXX power down pseudo function 8 (this will power down the card 641 * if no functions were attached). 642 */ 643 disable_function(sc, 8); 644 645 return (0); 646 } 647 648 static int 649 cardbusprint(void *aux, const char *pnp) 650 { 651 struct cardbus_attach_args *ca = aux; 652 char devinfo[256]; 653 int i; 654 655 if (pnp) { 656 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, 657 sizeof(devinfo)); 658 for (i = 0; i < 4; i++) { 659 if (ca->ca_cis.cis1_info[i] == NULL) 660 break; 661 if (i) 662 aprint_normal(", "); 663 aprint_normal("%s", ca->ca_cis.cis1_info[i]); 664 } 665 aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", 666 i ? " " : "", 667 ca->ca_cis.manufacturer, ca->ca_cis.product); 668 aprint_normal(" %s at %s", devinfo, pnp); 669 } 670 aprint_normal(" function %d", ca->ca_function); 671 672 return (UNCONF); 673 } 674 675 /* 676 * void cardbus_detach_card(struct cardbus_softc *sc) 677 * 678 * This function detaches the card on the slot: detach device data 679 * structure and turns off the power. 680 * 681 * This function must not be called under interrupt context. 682 */ 683 void 684 cardbus_detach_card(struct cardbus_softc *sc) 685 { 686 int f; 687 struct cardbus_devfunc *ct; 688 689 for (f = 0; f < 8; f++) { 690 ct = sc->sc_funcs[f]; 691 if (!ct) 692 continue; 693 694 DPRINTF(("%s: detaching %s\n", device_xname(&sc->sc_dev), 695 device_xname(ct->ct_device))); 696 /* call device detach function */ 697 698 if (config_detach(ct->ct_device, 0) != 0) { 699 aprint_error_dev(&sc->sc_dev, 700 "cannot detach dev %s, function %d\n", 701 device_xname(ct->ct_device), ct->ct_func); 702 } 703 } 704 705 sc->sc_poweron_func = 0; 706 (*sc->sc_cf->cardbus_power)(sc->sc_cc, 707 CARDBUS_VCC_0V | CARDBUS_VPP_0V); 708 } 709 710 void 711 cardbus_childdetached(device_t self, device_t child) 712 { 713 struct cardbus_softc *sc = device_private(self); 714 struct cardbus_devfunc *ct; 715 716 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 717 KASSERT(ct->ct_device == child); 718 719 sc->sc_poweron_func &= ~(1 << ct->ct_func); 720 sc->sc_funcs[ct->ct_func] = NULL; 721 free(ct, M_DEVBUF); 722 } 723 724 /* 725 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 726 * Interrupt handler of pccard. 727 * args: 728 * cardbus_chipset_tag_t *cc 729 * int irq: 730 */ 731 void * 732 cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 733 cardbus_intr_handle_t irq, int level, int (*func)(void *), void *arg) 734 { 735 736 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 737 return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); 738 } 739 740 /* 741 * void cardbus_intr_disestablish(cc, cf, handler) 742 * Interrupt handler of pccard. 743 * args: 744 * cardbus_chipset_tag_t *cc 745 */ 746 void 747 cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 748 void *handler) 749 { 750 751 DPRINTF(("- pccard_intr_disestablish\n")); 752 (*cf->cardbus_intr_disestablish)(cc, handler); 753 } 754 755 /* 756 * XXX this should be merged with cardbus_function_{enable,disable}, 757 * but we don't have a ct when these functions are called. 758 */ 759 static void 760 enable_function(struct cardbus_softc *sc, int cdstatus, int function) 761 { 762 763 if (sc->sc_poweron_func == 0) { 764 /* switch to 3V and/or wait for power to stabilize */ 765 if (cdstatus & CARDBUS_3V_CARD) { 766 /* 767 * sc_poweron_func must be substituted before 768 * entering sleep, in order to avoid turn on 769 * power twice. 770 */ 771 sc->sc_poweron_func |= (1 << function); 772 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); 773 } else { 774 /* No cards other than 3.3V cards. */ 775 return; 776 } 777 (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); 778 } 779 sc->sc_poweron_func |= (1 << function); 780 } 781 782 static void 783 disable_function(struct cardbus_softc *sc, int function) 784 { 785 bool powerdown; 786 cardbus_devfunc_t ct; 787 device_t dv; 788 int i; 789 790 sc->sc_poweron_func &= ~(1 << function); 791 if (sc->sc_poweron_func != 0) 792 return; 793 for (i = 0; i < __arraycount(sc->sc_funcs); i++) { 794 if ((ct = sc->sc_funcs[i]) == NULL) 795 continue; 796 dv = ct->ct_device; 797 if (prop_dictionary_get_bool(device_properties(dv), 798 "pmf-powerdown", &powerdown) && !powerdown) 799 return; 800 } 801 /* power-off because no functions are enabled */ 802 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); 803 } 804 805 /* 806 * int cardbus_function_enable(struct cardbus_softc *sc, int func) 807 * 808 * This function enables a function on a card. When no power is 809 * applied on the card, power will be applied on it. 810 */ 811 int 812 cardbus_function_enable(struct cardbus_softc *sc, int func) 813 { 814 cardbus_chipset_tag_t cc = sc->sc_cc; 815 cardbus_function_tag_t cf = sc->sc_cf; 816 cardbus_devfunc_t ct; 817 cardbusreg_t command; 818 cardbustag_t tag; 819 820 DPRINTF(("entering cardbus_function_enable... ")); 821 822 /* entering critical area */ 823 824 /* XXX: sc_vold should be used */ 825 enable_function(sc, CARDBUS_3V_CARD, func); 826 827 /* exiting critical area */ 828 829 tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); 830 831 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 832 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | 833 CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 834 835 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 836 837 if ((ct = sc->sc_funcs[func]) != NULL) 838 Cardbus_conf_write(ct, tag, CARDBUS_BHLC_REG, ct->ct_bhlc); 839 840 cardbus_free_tag(cc, cf, tag); 841 842 DPRINTF(("%x\n", sc->sc_poweron_func)); 843 844 return (0); 845 } 846 847 /* 848 * int cardbus_function_disable(struct cardbus_softc *, int func) 849 * 850 * This function disable a function on a card. When no functions are 851 * enabled, it turns off the power. 852 */ 853 int 854 cardbus_function_disable(struct cardbus_softc *sc, int func) 855 { 856 857 DPRINTF(("entering cardbus_function_disable... ")); 858 859 disable_function(sc, func); 860 861 return (0); 862 } 863 864 /* 865 * int cardbus_get_capability(cardbus_chipset_tag_t cc, 866 * cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, 867 * cardbusreg_t *value) 868 * 869 * Find the specified PCI capability. 870 */ 871 int 872 cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 873 cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) 874 { 875 cardbusreg_t reg; 876 unsigned int ofs; 877 878 reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 879 if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) 880 return (0); 881 882 ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, 883 PCI_CAPLISTPTR_REG)); 884 while (ofs != 0) { 885 #ifdef DIAGNOSTIC 886 if ((ofs & 3) || (ofs < 0x40)) 887 panic("cardbus_get_capability"); 888 #endif 889 reg = cardbus_conf_read(cc, cf, tag, ofs); 890 if (PCI_CAPLIST_CAP(reg) == capid) { 891 if (offset) 892 *offset = ofs; 893 if (value) 894 *value = reg; 895 return (1); 896 } 897 ofs = PCI_CAPLIST_NEXT(reg); 898 } 899 900 return (0); 901 } 902 903 /* 904 * below this line, there are some functions for decoding tuples. 905 * They should go out from this file. 906 */ 907 908 static u_int8_t * 909 decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); 910 911 static int 912 decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) 913 { 914 u_int8_t *tp = tuple; 915 916 if (PCMCIA_CISTPL_LINKTARGET != *tuple) { 917 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 918 return (0); 919 } 920 921 while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) 922 ; 923 924 return (1); 925 } 926 927 static u_int8_t * 928 decode_tuple(u_int8_t *tuple, u_int8_t *end, 929 tuple_decode_func func, void *data) 930 { 931 u_int8_t type; 932 u_int8_t len; 933 934 type = tuple[0]; 935 switch (type) { 936 case PCMCIA_CISTPL_NULL: 937 case PCMCIA_CISTPL_END: 938 len = 1; 939 break; 940 default: 941 if (tuple + 2 > end) 942 return (NULL); 943 len = tuple[1] + 2; 944 break; 945 } 946 947 if (tuple + len > end) 948 return (NULL); 949 950 (*func)(tuple, len, data); 951 952 if (type == PCMCIA_CISTPL_END || tuple + len == end) 953 return (NULL); 954 955 return (tuple + len); 956 } 957 958 /* 959 * XXX: this is another reason why this code should be shared with PCI. 960 */ 961 static int 962 cardbus_get_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 963 cardbusreg_t *state, int offset) 964 { 965 cardbusreg_t value, now; 966 cardbus_chipset_tag_t cc = ct->ct_cc; 967 cardbus_function_tag_t cf = ct->ct_cf; 968 969 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 970 now = value & PCI_PMCSR_STATE_MASK; 971 switch (now) { 972 case PCI_PMCSR_STATE_D0: 973 case PCI_PMCSR_STATE_D1: 974 case PCI_PMCSR_STATE_D2: 975 case PCI_PMCSR_STATE_D3: 976 *state = now; 977 return 0; 978 default: 979 return EINVAL; 980 } 981 } 982 983 int 984 cardbus_get_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, 985 cardbusreg_t *state) 986 { 987 cardbus_chipset_tag_t cc = ct->ct_cc; 988 cardbus_function_tag_t cf = ct->ct_cf; 989 int offset; 990 cardbusreg_t value; 991 992 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) 993 return EOPNOTSUPP; 994 995 return cardbus_get_powerstate_int(ct, tag, state, offset); 996 } 997 998 static int 999 cardbus_set_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 1000 cardbusreg_t state, int offset, cardbusreg_t cap_reg) 1001 { 1002 cardbus_chipset_tag_t cc = ct->ct_cc; 1003 cardbus_function_tag_t cf = ct->ct_cf; 1004 1005 cardbusreg_t value, cap, now; 1006 1007 KASSERT((offset & 0x3) == 0); 1008 1009 cap = cap_reg >> PCI_PMCR_SHIFT; 1010 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 1011 now = value & PCI_PMCSR_STATE_MASK; 1012 value &= ~PCI_PMCSR_STATE_MASK; 1013 1014 if (now == state) 1015 return 0; 1016 switch (state) { 1017 case PCI_PMCSR_STATE_D0: 1018 break; 1019 case PCI_PMCSR_STATE_D1: 1020 if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) { 1021 printf("invalid transition from %d to D1\n", (int)now); 1022 return EINVAL; 1023 } 1024 if (!(cap & PCI_PMCR_D1SUPP)) { 1025 printf("D1 not supported\n"); 1026 return EOPNOTSUPP; 1027 } 1028 break; 1029 case PCI_PMCSR_STATE_D2: 1030 if (now == PCI_PMCSR_STATE_D3) { 1031 printf("invalid transition from %d to D2\n", (int)now); 1032 return EINVAL; 1033 } 1034 if (!(cap & PCI_PMCR_D2SUPP)) { 1035 printf("D2 not supported\n"); 1036 return EOPNOTSUPP; 1037 } 1038 break; 1039 case PCI_PMCSR_STATE_D3: 1040 break; 1041 default: 1042 return EINVAL; 1043 } 1044 value |= state; 1045 cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); 1046 if (state == PCI_PMCSR_STATE_D3 || now == PCI_PMCSR_STATE_D3) 1047 DELAY(10000); 1048 else if (state == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D2) 1049 DELAY(200); 1050 1051 return 0; 1052 } 1053 1054 int 1055 cardbus_set_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, cardbusreg_t state) 1056 { 1057 cardbus_chipset_tag_t cc = ct->ct_cc; 1058 cardbus_function_tag_t cf = ct->ct_cf; 1059 int offset; 1060 cardbusreg_t value; 1061 1062 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, 1063 &value)) 1064 return EOPNOTSUPP; 1065 1066 return cardbus_set_powerstate_int(ct, tag, state, offset, value); 1067 } 1068 1069 #ifdef CARDBUS_DEBUG 1070 static const char *tuple_name(int); 1071 static const char *tuple_names[] = { 1072 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 1073 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 1074 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 1075 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 1076 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 1077 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 1078 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 1079 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 1080 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 1081 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 1082 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 1083 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 1084 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 1085 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 1086 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 1087 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 1088 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 1089 "DATE", "BATTERY", "ORG" 1090 }; 1091 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 1092 1093 static const char * 1094 tuple_name(int type) 1095 { 1096 1097 if (0 <= type && type < NAME_LEN(tuple_names)) { 1098 return (tuple_names[type]); 1099 } else if (type == 0xff) { 1100 return ("END"); 1101 } else { 1102 return ("Reserved"); 1103 } 1104 } 1105 1106 static void 1107 print_tuple(u_int8_t *tuple, int len, void *data) 1108 { 1109 int i; 1110 1111 printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); 1112 1113 for (i = 0; i < len; ++i) { 1114 if (i % 16 == 0) { 1115 printf(" 0x%2x:", i); 1116 } 1117 printf(" %x", tuple[i]); 1118 if (i % 16 == 15) { 1119 printf("\n"); 1120 } 1121 } 1122 if (i % 16 != 0) { 1123 printf("\n"); 1124 } 1125 } 1126 #endif 1127 1128 void 1129 cardbus_conf_capture(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1130 cardbustag_t tag, struct cardbus_conf_state *pcs) 1131 { 1132 int off; 1133 1134 for (off = 0; off < 16; off++) 1135 pcs->reg[off] = cardbus_conf_read(cc, cf, tag, (off * 4)); 1136 } 1137 1138 void 1139 cardbus_conf_restore(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1140 cardbustag_t tag, struct cardbus_conf_state *pcs) 1141 { 1142 int off; 1143 cardbusreg_t val; 1144 1145 for (off = 15; off >= 0; off--) { 1146 val = cardbus_conf_read(cc, cf, tag, (off * 4)); 1147 if (val != pcs->reg[off]) 1148 cardbus_conf_write(cc, cf,tag, (off * 4), pcs->reg[off]); 1149 } 1150 } 1151 1152 void 1153 cardbus_disable_retry(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1154 cardbustag_t tag) 1155 { 1156 /* See comment on sys/dev/pci/pci.c:pci_disable_retry() for 1157 * the reason I comment-out this code. 1158 */ 1159 #if 0 1160 cardbusreg_t retry; 1161 1162 retry = cardbus_conf_read(cc, cf, tag, PCI_RETRY_TIMEOUT_REG); 1163 retry &= ~PCI_RETRY_TIMEOUT_REG_MASK; 1164 cardbus_conf_write(cc, cf, tag, PCI_RETRY_TIMEOUT_REG, retry); 1165 #endif 1166 } 1167 1168 struct cardbus_child_power { 1169 struct cardbus_conf_state p_cardbusconf; 1170 cardbus_devfunc_t p_ct; 1171 cardbustag_t p_tag; 1172 cardbus_chipset_tag_t p_cc; 1173 cardbus_function_tag_t p_cf; 1174 cardbusreg_t p_pm_cap; 1175 bool p_has_pm; 1176 int p_pm_offset; 1177 }; 1178 1179 static bool 1180 cardbus_child_suspend(device_t dv PMF_FN_ARGS) 1181 { 1182 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1183 1184 cardbus_conf_capture(priv->p_cc, priv->p_cf, priv->p_tag, 1185 &priv->p_cardbusconf); 1186 1187 if (priv->p_has_pm && 1188 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1189 PCI_PMCSR_STATE_D3, priv->p_pm_offset, priv->p_pm_cap)) { 1190 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1191 return false; 1192 } 1193 1194 Cardbus_function_disable(priv->p_ct); 1195 1196 return true; 1197 } 1198 1199 static bool 1200 cardbus_child_resume(device_t dv PMF_FN_ARGS) 1201 { 1202 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1203 1204 Cardbus_function_enable(priv->p_ct); 1205 1206 if (priv->p_has_pm && 1207 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1208 PCI_PMCSR_STATE_D0, priv->p_pm_offset, priv->p_pm_cap)) { 1209 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1210 return false; 1211 } 1212 1213 cardbus_conf_restore(priv->p_cc, priv->p_cf, priv->p_tag, 1214 &priv->p_cardbusconf); 1215 1216 return true; 1217 } 1218 1219 static void 1220 cardbus_child_deregister(device_t dv) 1221 { 1222 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1223 1224 free(priv, M_DEVBUF); 1225 } 1226 1227 static bool 1228 cardbus_child_register(device_t child) 1229 { 1230 device_t self = device_parent(child); 1231 struct cardbus_softc *sc = device_private(self); 1232 struct cardbus_devfunc *ct; 1233 struct cardbus_child_power *priv; 1234 int off; 1235 cardbusreg_t reg; 1236 1237 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 1238 1239 priv = malloc(sizeof(*priv), M_DEVBUF, M_WAITOK); 1240 1241 priv->p_ct = ct; 1242 priv->p_cc = ct->ct_cc; 1243 priv->p_cf = ct->ct_cf; 1244 priv->p_tag = cardbus_make_tag(priv->p_cc, priv->p_cf, ct->ct_bus, 1245 ct->ct_func); 1246 1247 if (cardbus_get_capability(priv->p_cc, priv->p_cf, priv->p_tag, 1248 PCI_CAP_PWRMGMT, &off, ®)) { 1249 priv->p_has_pm = true; 1250 priv->p_pm_offset = off; 1251 priv->p_pm_cap = reg; 1252 } else { 1253 priv->p_has_pm = false; 1254 priv->p_pm_offset = -1; 1255 } 1256 1257 device_pmf_bus_register(child, priv, cardbus_child_suspend, 1258 cardbus_child_resume, 0, cardbus_child_deregister); 1259 1260 return true; 1261 } 1262
Indexes created Tue Sep 30 06:09:59 GMT 2025