cardbus.c revision 1.83
1 /* $NetBSD: cardbus.c,v 1.83 2008/01/02 02:05:19 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 1.83 2008/01/02 02:05:19 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(struct device *, struct device *, void *); 73 STATIC int cardbusdetach(device_t, int); 74 STATIC int cardbusmatch(struct device *, struct cfdata *, void *); 75 int cardbus_rescan(struct device *, const char *, const int *); 76 void cardbus_childdetached(struct device *, struct device *); 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(struct device *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(struct device *parent, struct device *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 sc->sc_dev.dv_xname)); 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 sc->sc_dev.dv_xname)); 215 } else { 216 reg = CARDBUS_CIS_ASI_BAR(cardbus_space); 217 DPRINTF(("%s: reading CIS data from BAR%d\n", 218 sc->sc_dev.dv_xname, 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 printf("%s: failed to map memory\n", 230 sc->sc_dev.dv_xname); 231 return (1); 232 } 233 aprint_debug_dev(&sc->sc_dev, "mapped %ju bytes at 0x%jx\n", 234 (uintmax_t)bar_size, (uintmax_t)bar_addr); 235 236 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 237 cardbusreg_t exrom; 238 int save; 239 struct cardbus_rom_image_head rom_image; 240 struct cardbus_rom_image *p; 241 242 save = splhigh(); 243 /* enable rom address decoder */ 244 exrom = cardbus_conf_read(cc, cf, tag, reg); 245 cardbus_conf_write(cc, cf, tag, reg, exrom | 1); 246 247 command = cardbus_conf_read(cc, cf, tag, 248 CARDBUS_COMMAND_STATUS_REG); 249 cardbus_conf_write(cc, cf, tag, 250 CARDBUS_COMMAND_STATUS_REG, 251 command | CARDBUS_COMMAND_MEM_ENABLE); 252 253 if (cardbus_read_exrom(bar_tag, bar_memh, &rom_image)) 254 goto out; 255 256 SIMPLEQ_FOREACH(p, &rom_image, next) { 257 if (p->rom_image == 258 CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { 259 bus_space_read_region_1(p->romt, 260 p->romh, CARDBUS_CIS_ADDR(cis_ptr), 261 tuples, MIN(p->image_size, len)); 262 found++; 263 break; 264 } 265 } 266 while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { 267 SIMPLEQ_REMOVE_HEAD(&rom_image, next); 268 free(p, M_DEVBUF); 269 } 270 out: 271 exrom = cardbus_conf_read(cc, cf, tag, reg); 272 cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); 273 splx(save); 274 } else { 275 command = cardbus_conf_read(cc, cf, tag, 276 CARDBUS_COMMAND_STATUS_REG); 277 cardbus_conf_write(cc, cf, tag, 278 CARDBUS_COMMAND_STATUS_REG, 279 command | CARDBUS_COMMAND_MEM_ENABLE); 280 /* XXX byte order? */ 281 bus_space_read_region_1(bar_tag, bar_memh, 282 cis_ptr, tuples, MIN(bar_size, 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)", sc->sc_dev.dv_xname, 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(struct device *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 struct device *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 if (i == 5) { 488 return (EIO); 489 } 490 } 491 492 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 493 DPRINTF(("%s bhlc 0x%08x -> ", sc->sc_dev.dv_xname, bhlc)); 494 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 495 496 for (function = 0; function < nfunction; function++) { 497 struct cardbus_attach_args ca; 498 int locs[CARDBUSCF_NLOCS]; 499 500 if (locators[CARDBUSCF_FUNCTION] != 501 CARDBUSCF_FUNCTION_DEFAULT && 502 locators[CARDBUSCF_FUNCTION] != function) 503 continue; 504 505 if (sc->sc_funcs[function]) 506 continue; 507 508 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 509 510 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 511 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 512 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 513 514 /* Invalid vendor ID value? */ 515 if (CARDBUS_VENDOR(id) == PCI_VENDOR_INVALID) { 516 continue; 517 } 518 519 DPRINTF(("cardbus_attach_card: " 520 "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 521 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 522 523 enable_function(sc, cdstatus, function); 524 525 /* clean up every BAR */ 526 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); 527 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); 528 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); 529 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); 530 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); 531 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); 532 cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); 533 534 /* set initial latency and cacheline size */ 535 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 536 icr = cardbus_conf_read(cc, cf, tag, CARDBUS_INTERRUPT_REG); 537 DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", 538 device_xname(&sc->sc_dev), function, icr, bhlc)); 539 bhlc &= ~(CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT); 540 bhlc |= (sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << 541 CARDBUS_CACHELINE_SHIFT; 542 /* 543 * Set the initial value of the Latency Timer. 544 * 545 * While a PCI device owns the bus, its Latency 546 * Timer counts down bus cycles from its initial 547 * value to 0. Minimum Grant tells for how long 548 * the device wants to own the bus once it gets 549 * access, in units of 250ns. 550 * 551 * On a 33 MHz bus, there are 8 cycles per 250ns. 552 * So I multiply the Minimum Grant by 8 to find 553 * out the initial value of the Latency Timer. 554 * 555 * Avoid setting a Latency Timer less than 0x10, 556 * since the old code did not do that. 557 */ 558 lattimer = 559 MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); 560 if (PCI_LATTIMER(bhlc) < lattimer) { 561 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 562 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 563 } 564 565 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 566 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 567 DPRINTF(("0x%08x\n", bhlc)); 568 569 /* 570 * We need to allocate the ct here, since we might 571 * need it when reading the CIS 572 */ 573 if ((ct = malloc(sizeof(struct cardbus_devfunc), 574 M_DEVBUF, M_NOWAIT)) == NULL) { 575 panic("no room for cardbus_tag"); 576 } 577 578 ct->ct_bhlc = bhlc; 579 ct->ct_cc = sc->sc_cc; 580 ct->ct_cf = sc->sc_cf; 581 ct->ct_bus = sc->sc_bus; 582 ct->ct_func = function; 583 ct->ct_sc = sc; 584 sc->sc_funcs[function] = ct; 585 586 memset(&ca, 0, sizeof(ca)); 587 588 ca.ca_ct = ct; 589 590 ca.ca_iot = sc->sc_iot; 591 ca.ca_memt = sc->sc_memt; 592 ca.ca_dmat = sc->sc_dmat; 593 594 #if rbus 595 ca.ca_rbus_iot = sc->sc_rbus_iot; 596 ca.ca_rbus_memt= sc->sc_rbus_memt; 597 #endif 598 599 ca.ca_tag = tag; 600 ca.ca_bus = sc->sc_bus; 601 ca.ca_function = function; 602 ca.ca_id = id; 603 ca.ca_class = class; 604 605 ca.ca_intrline = sc->sc_intrline; 606 607 if (cis_ptr != 0) { 608 #define TUPLESIZE 2048 609 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); 610 if (cardbus_read_tuples(&ca, cis_ptr, 611 tuple, TUPLESIZE)) { 612 printf("cardbus_attach_card: " 613 "failed to read CIS\n"); 614 } else { 615 #ifdef CARDBUS_DEBUG 616 decode_tuples(tuple, TUPLESIZE, 617 print_tuple, NULL); 618 #endif 619 decode_tuples(tuple, TUPLESIZE, 620 parse_tuple, &ca.ca_cis); 621 } 622 free(tuple, M_DEVBUF); 623 } 624 625 locs[CARDBUSCF_FUNCTION] = function; 626 627 if ((csc = config_found_sm_loc((void *)sc, "cardbus", locs, 628 &ca, cardbusprint, config_stdsubmatch)) == NULL) { 629 /* do not match */ 630 disable_function(sc, function); 631 sc->sc_funcs[function] = NULL; 632 free(ct, M_DEVBUF); 633 } else { 634 /* found */ 635 ct->ct_device = csc; 636 } 637 } 638 /* 639 * XXX power down pseudo function 8 (this will power down the card 640 * if no functions were attached). 641 */ 642 disable_function(sc, 8); 643 644 return (0); 645 } 646 647 static int 648 cardbusprint(void *aux, const char *pnp) 649 { 650 struct cardbus_attach_args *ca = aux; 651 char devinfo[256]; 652 int i; 653 654 if (pnp) { 655 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, 656 sizeof(devinfo)); 657 for (i = 0; i < 4; i++) { 658 if (ca->ca_cis.cis1_info[i] == NULL) 659 break; 660 if (i) 661 aprint_normal(", "); 662 aprint_normal("%s", ca->ca_cis.cis1_info[i]); 663 } 664 aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", 665 i ? " " : "", 666 ca->ca_cis.manufacturer, ca->ca_cis.product); 667 aprint_normal(" %s at %s", devinfo, pnp); 668 } 669 aprint_normal(" function %d", ca->ca_function); 670 671 return (UNCONF); 672 } 673 674 /* 675 * void cardbus_detach_card(struct cardbus_softc *sc) 676 * 677 * This function detaches the card on the slot: detach device data 678 * structure and turns off the power. 679 * 680 * This function must not be called under interrupt context. 681 */ 682 void 683 cardbus_detach_card(struct cardbus_softc *sc) 684 { 685 int f; 686 struct cardbus_devfunc *ct; 687 688 for (f = 0; f < 8; f++) { 689 ct = sc->sc_funcs[f]; 690 if (!ct) 691 continue; 692 693 DPRINTF(("%s: detaching %s\n", sc->sc_dev.dv_xname, 694 ct->ct_device->dv_xname)); 695 /* call device detach function */ 696 697 if (config_detach(ct->ct_device, 0) != 0) { 698 printf("%s: cannot detach dev %s, function %d\n", 699 sc->sc_dev.dv_xname, ct->ct_device->dv_xname, 700 ct->ct_func); 701 } 702 } 703 704 sc->sc_poweron_func = 0; 705 (*sc->sc_cf->cardbus_power)(sc->sc_cc, 706 CARDBUS_VCC_0V | CARDBUS_VPP_0V); 707 } 708 709 void 710 cardbus_childdetached(struct device *self, struct device *child) 711 { 712 struct cardbus_softc *sc = device_private(self); 713 struct cardbus_devfunc *ct; 714 715 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 716 KASSERT(ct->ct_device == child); 717 718 sc->sc_poweron_func &= ~(1 << ct->ct_func); 719 sc->sc_funcs[ct->ct_func] = NULL; 720 free(ct, M_DEVBUF); 721 } 722 723 /* 724 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 725 * Interrupt handler of pccard. 726 * args: 727 * cardbus_chipset_tag_t *cc 728 * int irq: 729 */ 730 void * 731 cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 732 cardbus_intr_handle_t irq, int level, int (*func)(void *), void *arg) 733 { 734 735 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 736 return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); 737 } 738 739 /* 740 * void cardbus_intr_disestablish(cc, cf, handler) 741 * Interrupt handler of pccard. 742 * args: 743 * cardbus_chipset_tag_t *cc 744 */ 745 void 746 cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 747 void *handler) 748 { 749 750 DPRINTF(("- pccard_intr_disestablish\n")); 751 (*cf->cardbus_intr_disestablish)(cc, handler); 752 } 753 754 /* 755 * XXX this should be merged with cardbus_function_{enable,disable}, 756 * but we don't have a ct when these functions are called. 757 */ 758 static void 759 enable_function(struct cardbus_softc *sc, int cdstatus, int function) 760 { 761 762 if (sc->sc_poweron_func == 0) { 763 /* switch to 3V and/or wait for power to stabilize */ 764 if (cdstatus & CARDBUS_3V_CARD) { 765 /* 766 * sc_poweron_func must be substituted before 767 * entering sleep, in order to avoid turn on 768 * power twice. 769 */ 770 sc->sc_poweron_func |= (1 << function); 771 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); 772 } else { 773 /* No cards other than 3.3V cards. */ 774 return; 775 } 776 (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); 777 } 778 sc->sc_poweron_func |= (1 << function); 779 } 780 781 static void 782 disable_function(struct cardbus_softc *sc, int function) 783 { 784 785 sc->sc_poweron_func &= ~(1 << function); 786 if (sc->sc_poweron_func == 0) { 787 /* power-off because no functions are enabled */ 788 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); 789 } 790 } 791 792 /* 793 * int cardbus_function_enable(struct cardbus_softc *sc, int func) 794 * 795 * This function enables a function on a card. When no power is 796 * applied on the card, power will be applied on it. 797 */ 798 int 799 cardbus_function_enable(struct cardbus_softc *sc, int func) 800 { 801 cardbus_chipset_tag_t cc = sc->sc_cc; 802 cardbus_function_tag_t cf = sc->sc_cf; 803 cardbus_devfunc_t ct; 804 cardbusreg_t command; 805 cardbustag_t tag; 806 807 DPRINTF(("entering cardbus_function_enable... ")); 808 809 /* entering critical area */ 810 811 /* XXX: sc_vold should be used */ 812 enable_function(sc, CARDBUS_3V_CARD, func); 813 814 /* exiting critical area */ 815 816 tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); 817 818 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 819 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | 820 CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 821 822 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 823 824 if ((ct = sc->sc_funcs[func]) != NULL) 825 Cardbus_conf_write(ct, tag, CARDBUS_BHLC_REG, ct->ct_bhlc); 826 827 cardbus_free_tag(cc, cf, tag); 828 829 DPRINTF(("%x\n", sc->sc_poweron_func)); 830 831 return (0); 832 } 833 834 /* 835 * int cardbus_function_disable(struct cardbus_softc *, int func) 836 * 837 * This function disable a function on a card. When no functions are 838 * enabled, it turns off the power. 839 */ 840 int 841 cardbus_function_disable(struct cardbus_softc *sc, int func) 842 { 843 844 DPRINTF(("entering cardbus_function_disable... ")); 845 846 disable_function(sc, func); 847 848 return (0); 849 } 850 851 /* 852 * int cardbus_get_capability(cardbus_chipset_tag_t cc, 853 * cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, 854 * cardbusreg_t *value) 855 * 856 * Find the specified PCI capability. 857 */ 858 int 859 cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 860 cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) 861 { 862 cardbusreg_t reg; 863 unsigned int ofs; 864 865 reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 866 if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) 867 return (0); 868 869 ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, 870 PCI_CAPLISTPTR_REG)); 871 while (ofs != 0) { 872 #ifdef DIAGNOSTIC 873 if ((ofs & 3) || (ofs < 0x40)) 874 panic("cardbus_get_capability"); 875 #endif 876 reg = cardbus_conf_read(cc, cf, tag, ofs); 877 if (PCI_CAPLIST_CAP(reg) == capid) { 878 if (offset) 879 *offset = ofs; 880 if (value) 881 *value = reg; 882 return (1); 883 } 884 ofs = PCI_CAPLIST_NEXT(reg); 885 } 886 887 return (0); 888 } 889 890 /* 891 * below this line, there are some functions for decoding tuples. 892 * They should go out from this file. 893 */ 894 895 static u_int8_t * 896 decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); 897 898 static int 899 decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) 900 { 901 u_int8_t *tp = tuple; 902 903 if (PCMCIA_CISTPL_LINKTARGET != *tuple) { 904 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 905 return (0); 906 } 907 908 while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) 909 ; 910 911 return (1); 912 } 913 914 static u_int8_t * 915 decode_tuple(u_int8_t *tuple, u_int8_t *end, 916 tuple_decode_func func, void *data) 917 { 918 u_int8_t type; 919 u_int8_t len; 920 921 type = tuple[0]; 922 switch (type) { 923 case PCMCIA_CISTPL_NULL: 924 case PCMCIA_CISTPL_END: 925 len = 1; 926 break; 927 default: 928 if (tuple + 2 > end) 929 return (NULL); 930 len = tuple[1] + 2; 931 break; 932 } 933 934 if (tuple + len > end) 935 return (NULL); 936 937 (*func)(tuple, len, data); 938 939 if (type == PCMCIA_CISTPL_END || tuple + len == end) 940 return (NULL); 941 942 return (tuple + len); 943 } 944 945 /* 946 * XXX: this is another reason why this code should be shared with PCI. 947 */ 948 static int 949 cardbus_get_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 950 cardbusreg_t *state, int offset) 951 { 952 cardbusreg_t value, now; 953 cardbus_chipset_tag_t cc = ct->ct_cc; 954 cardbus_function_tag_t cf = ct->ct_cf; 955 956 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 957 now = value & PCI_PMCSR_STATE_MASK; 958 switch (now) { 959 case PCI_PMCSR_STATE_D0: 960 case PCI_PMCSR_STATE_D1: 961 case PCI_PMCSR_STATE_D2: 962 case PCI_PMCSR_STATE_D3: 963 *state = now; 964 return 0; 965 default: 966 return EINVAL; 967 } 968 } 969 970 int 971 cardbus_get_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, 972 cardbusreg_t *state) 973 { 974 cardbus_chipset_tag_t cc = ct->ct_cc; 975 cardbus_function_tag_t cf = ct->ct_cf; 976 int offset; 977 cardbusreg_t value; 978 979 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, &value)) 980 return EOPNOTSUPP; 981 982 return cardbus_get_powerstate_int(ct, tag, state, offset); 983 } 984 985 static int 986 cardbus_set_powerstate_int(cardbus_devfunc_t ct, cardbustag_t tag, 987 cardbusreg_t state, int offset, cardbusreg_t cap_reg) 988 { 989 cardbus_chipset_tag_t cc = ct->ct_cc; 990 cardbus_function_tag_t cf = ct->ct_cf; 991 992 cardbusreg_t value, cap, now; 993 994 cap = cap_reg >> PCI_PMCR_SHIFT; 995 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 996 now = value & PCI_PMCSR_STATE_MASK; 997 value &= ~PCI_PMCSR_STATE_MASK; 998 999 if (now == state) 1000 return 0; 1001 switch (state) { 1002 case PCI_PMCSR_STATE_D0: 1003 value |= PCI_PMCSR_STATE_D0; 1004 break; 1005 case PCI_PMCSR_STATE_D1: 1006 if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) { 1007 printf("invalid transition from %d to D1\n", (int)now); 1008 return EINVAL; 1009 } 1010 if (!(cap & PCI_PMCR_D1SUPP)) { 1011 printf("D1 not supported\n"); 1012 return EOPNOTSUPP; 1013 } 1014 value |= PCI_PMCSR_STATE_D1; 1015 break; 1016 case PCI_PMCSR_STATE_D2: 1017 if (now == PCI_PMCSR_STATE_D3) { 1018 printf("invalid transition from %d to D2\n", (int)now); 1019 return EINVAL; 1020 } 1021 if (!(cap & PCI_PMCR_D2SUPP)) { 1022 printf("D2 not supported\n"); 1023 return EOPNOTSUPP; 1024 } 1025 value |= PCI_PMCSR_STATE_D2; 1026 break; 1027 case PCI_PMCSR_STATE_D3: 1028 value |= PCI_PMCSR_STATE_D3; 1029 break; 1030 default: 1031 return EINVAL; 1032 } 1033 1034 cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); 1035 DELAY(1000); 1036 1037 return 0; 1038 } 1039 1040 int 1041 cardbus_set_powerstate(cardbus_devfunc_t ct, cardbustag_t tag, cardbusreg_t state) 1042 { 1043 cardbus_chipset_tag_t cc = ct->ct_cc; 1044 cardbus_function_tag_t cf = ct->ct_cf; 1045 int offset; 1046 cardbusreg_t value; 1047 1048 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, 1049 &value)) 1050 return EOPNOTSUPP; 1051 1052 return cardbus_set_powerstate_int(ct, tag, state, offset, value); 1053 } 1054 1055 #ifdef CARDBUS_DEBUG 1056 static const char *tuple_name(int); 1057 static const char *tuple_names[] = { 1058 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 1059 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 1060 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 1061 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 1062 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 1063 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 1064 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 1065 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 1066 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 1067 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 1068 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 1069 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 1070 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 1071 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 1072 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 1073 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 1074 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 1075 "DATE", "BATTERY", "ORG" 1076 }; 1077 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 1078 1079 static const char * 1080 tuple_name(int type) 1081 { 1082 1083 if (0 <= type && type < NAME_LEN(tuple_names)) { 1084 return (tuple_names[type]); 1085 } else if (type == 0xff) { 1086 return ("END"); 1087 } else { 1088 return ("Reserved"); 1089 } 1090 } 1091 1092 static void 1093 print_tuple(u_int8_t *tuple, int len, void *data) 1094 { 1095 int i; 1096 1097 printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); 1098 1099 for (i = 0; i < len; ++i) { 1100 if (i % 16 == 0) { 1101 printf(" 0x%2x:", i); 1102 } 1103 printf(" %x", tuple[i]); 1104 if (i % 16 == 15) { 1105 printf("\n"); 1106 } 1107 } 1108 if (i % 16 != 0) { 1109 printf("\n"); 1110 } 1111 } 1112 #endif 1113 1114 void 1115 cardbus_conf_capture(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1116 cardbustag_t tag, struct cardbus_conf_state *pcs) 1117 { 1118 int off; 1119 1120 for (off = 0; off < 16; off++) 1121 pcs->reg[off] = cardbus_conf_read(cc, cf, tag, (off * 4)); 1122 } 1123 1124 void 1125 cardbus_conf_restore(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1126 cardbustag_t tag, struct cardbus_conf_state *pcs) 1127 { 1128 int off; 1129 cardbusreg_t val; 1130 1131 for (off = 15; off >= 0; off--) { 1132 val = cardbus_conf_read(cc, cf, tag, (off * 4)); 1133 if (val != pcs->reg[off]) 1134 cardbus_conf_write(cc, cf,tag, (off * 4), pcs->reg[off]); 1135 } 1136 } 1137 1138 void 1139 cardbus_disable_retry(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 1140 cardbustag_t tag) 1141 { 1142 cardbusreg_t retry; 1143 1144 /* 1145 * Disable retry timeout to keep PCI Tx retries from 1146 * interfering with ACPI C3 CPU state. 1147 */ 1148 retry = cardbus_conf_read(cc, cf, tag, PCI_RETRY_TIMEOUT_REG); 1149 retry &= ~PCI_RETRY_TIMEOUT_REG_MASK; 1150 cardbus_conf_write(cc, cf, tag, PCI_RETRY_TIMEOUT_REG, retry); 1151 } 1152 1153 struct cardbus_child_power { 1154 struct cardbus_conf_state p_cardbusconf; 1155 cardbus_devfunc_t p_ct; 1156 cardbustag_t p_tag; 1157 cardbus_chipset_tag_t p_cc; 1158 cardbus_function_tag_t p_cf; 1159 cardbusreg_t p_pm_cap; 1160 bool p_has_pm; 1161 int p_pm_offset; 1162 }; 1163 1164 static bool 1165 cardbus_child_suspend(device_t dv) 1166 { 1167 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1168 1169 cardbus_conf_capture(priv->p_cc, priv->p_cf, priv->p_tag, 1170 &priv->p_cardbusconf); 1171 1172 if (priv->p_has_pm && 1173 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1174 PCI_PMCSR_STATE_D3, priv->p_pm_offset, priv->p_pm_cap)) { 1175 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1176 return false; 1177 } 1178 1179 Cardbus_function_disable(priv->p_ct); 1180 1181 return true; 1182 } 1183 1184 static bool 1185 cardbus_child_resume(device_t dv) 1186 { 1187 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1188 1189 Cardbus_function_enable(priv->p_ct); 1190 1191 if (priv->p_has_pm && 1192 cardbus_set_powerstate_int(priv->p_ct, priv->p_tag, 1193 PCI_PMCSR_STATE_D0, priv->p_pm_offset, priv->p_pm_cap)) { 1194 aprint_error_dev(dv, "unsupported state, continuing.\n"); 1195 return false; 1196 } 1197 1198 cardbus_conf_restore(priv->p_cc, priv->p_cf, priv->p_tag, 1199 &priv->p_cardbusconf); 1200 1201 return true; 1202 } 1203 1204 static void 1205 cardbus_child_deregister(device_t dv) 1206 { 1207 struct cardbus_child_power *priv = device_pmf_bus_private(dv); 1208 1209 free(priv, M_DEVBUF); 1210 } 1211 1212 static bool 1213 cardbus_child_register(device_t child) 1214 { 1215 device_t self = device_parent(child); 1216 struct cardbus_softc *sc = device_private(self); 1217 struct cardbus_devfunc *ct; 1218 struct cardbus_child_power *priv; 1219 int off; 1220 cardbusreg_t reg; 1221 1222 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 1223 1224 priv = malloc(sizeof(*priv), M_DEVBUF, M_WAITOK); 1225 1226 priv->p_ct = ct; 1227 priv->p_cc = ct->ct_cf; 1228 priv->p_cf = ct->ct_cf; 1229 priv->p_tag = cardbus_make_tag(priv->p_cc, priv->p_cf, ct->ct_bus, 1230 ct->ct_func); 1231 1232 if (cardbus_get_capability(priv->p_cc, priv->p_cf, priv->p_tag, 1233 PCI_CAP_PWRMGMT, &off, ®)) { 1234 priv->p_has_pm = true; 1235 priv->p_pm_offset = off; 1236 priv->p_pm_cap = reg; 1237 } else { 1238 priv->p_has_pm = false; 1239 priv->p_pm_offset = -1; 1240 } 1241 1242 device_pmf_bus_register(child, priv, cardbus_child_suspend, 1243 cardbus_child_resume, cardbus_child_deregister); 1244 1245 return true; 1246 } 1247
Indexes created Tue Sep 30 20:09:53 GMT 2025