1 /* $NetBSD: cardbus.c,v 1.78 2007/11/16 20:25:47 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 1.78 2007/11/16 20:25:47 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 cardbusmatch(struct device *, struct cfdata *, void *); 74 int cardbus_rescan(struct device *, const char *, const int *); 75 void cardbus_childdetached(struct device *, struct device *); 76 static int cardbusprint(void *, const char *); 77 78 typedef void (*tuple_decode_func)(u_int8_t*, int, void*); 79 80 static int decode_tuples(u_int8_t *, int, tuple_decode_func, void*); 81 #ifdef CARDBUS_DEBUG 82 static void print_tuple(u_int8_t*, int, void*); 83 #endif 84 85 static int cardbus_read_tuples(struct cardbus_attach_args *, 86 cardbusreg_t, u_int8_t *, size_t); 87 88 static void enable_function(struct cardbus_softc *, int, int); 89 static void disable_function(struct cardbus_softc *, int); 90 91 CFATTACH_DECL2(cardbus, sizeof(struct cardbus_softc), 92 cardbusmatch, cardbusattach, NULL, NULL, 93 cardbus_rescan, cardbus_childdetached); 94 95 #ifndef __NetBSD_Version__ 96 struct cfdriver cardbus_cd = { 97 NULL, "cardbus", DV_DULL 98 }; 99 #endif 100 101 102 STATIC int 103 cardbusmatch(struct device *parent, struct cfdata *cf, void *aux) 104 { 105 struct cbslot_attach_args *cba = aux; 106 107 if (strcmp(cba->cba_busname, cf->cf_name)) { 108 DPRINTF(("cardbusmatch: busname differs %s <=> %s\n", 109 cba->cba_busname, cf->cf_name)); 110 return (0); 111 } 112 113 return (1); 114 } 115 116 STATIC void 117 cardbusattach(struct device *parent, struct device *self, void *aux) 118 { 119 struct cardbus_softc *sc = device_private(self); 120 struct cbslot_attach_args *cba = aux; 121 122 sc->sc_bus = cba->cba_bus; 123 sc->sc_intrline = cba->cba_intrline; 124 sc->sc_cacheline = cba->cba_cacheline; 125 sc->sc_max_lattimer = MIN(0xf8, cba->cba_max_lattimer); 126 127 printf(": bus %d", sc->sc_bus); 128 if (bootverbose) 129 printf(" cacheline 0x%x, lattimer 0x%x", sc->sc_cacheline, 130 sc->sc_max_lattimer); 131 printf("\n"); 132 133 sc->sc_iot = cba->cba_iot; /* CardBus I/O space tag */ 134 sc->sc_memt = cba->cba_memt; /* CardBus MEM space tag */ 135 sc->sc_dmat = cba->cba_dmat; /* DMA tag */ 136 sc->sc_cc = cba->cba_cc; 137 sc->sc_cf = cba->cba_cf; 138 139 #if rbus 140 sc->sc_rbus_iot = cba->cba_rbus_iot; 141 sc->sc_rbus_memt = cba->cba_rbus_memt; 142 #endif 143 } 144 145 static int 146 cardbus_read_tuples(struct cardbus_attach_args *ca, cardbusreg_t cis_ptr, 147 u_int8_t *tuples, size_t len) 148 { 149 struct cardbus_softc *sc = ca->ca_ct->ct_sc; 150 cardbus_chipset_tag_t cc = ca->ca_ct->ct_cc; 151 cardbus_function_tag_t cf = ca->ca_ct->ct_cf; 152 cardbustag_t tag = ca->ca_tag; 153 cardbusreg_t command; 154 bus_space_tag_t bar_tag; 155 bus_space_handle_t bar_memh; 156 bus_size_t bar_size; 157 bus_addr_t bar_addr; 158 cardbusreg_t reg; 159 int found = 0; 160 int cardbus_space = cis_ptr & CARDBUS_CIS_ASIMASK; 161 int i, j; 162 163 memset(tuples, 0, len); 164 165 cis_ptr = cis_ptr & CARDBUS_CIS_ADDRMASK; 166 167 switch (cardbus_space) { 168 case CARDBUS_CIS_ASI_TUPLE: 169 DPRINTF(("%s: reading CIS data from configuration space\n", 170 sc->sc_dev.dv_xname)); 171 for (i = cis_ptr, j = 0; i < 0xff; i += 4) { 172 u_int32_t e = (*cf->cardbus_conf_read)(cc, tag, i); 173 tuples[j] = 0xff & e; 174 e >>= 8; 175 tuples[j + 1] = 0xff & e; 176 e >>= 8; 177 tuples[j + 2] = 0xff & e; 178 e >>= 8; 179 tuples[j + 3] = 0xff & e; 180 j += 4; 181 } 182 found++; 183 break; 184 185 case CARDBUS_CIS_ASI_BAR0: 186 case CARDBUS_CIS_ASI_BAR1: 187 case CARDBUS_CIS_ASI_BAR2: 188 case CARDBUS_CIS_ASI_BAR3: 189 case CARDBUS_CIS_ASI_BAR4: 190 case CARDBUS_CIS_ASI_BAR5: 191 case CARDBUS_CIS_ASI_ROM: 192 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 193 reg = CARDBUS_ROM_REG; 194 DPRINTF(("%s: reading CIS data from ROM\n", 195 sc->sc_dev.dv_xname)); 196 } else { 197 reg = CARDBUS_CIS_ASI_BAR(cardbus_space); 198 DPRINTF(("%s: reading CIS data from BAR%d\n", 199 sc->sc_dev.dv_xname, cardbus_space - 1)); 200 } 201 202 /* 203 * XXX zero register so mapreg_map doesn't get confused by old 204 * contents. 205 */ 206 cardbus_conf_write(cc, cf, tag, reg, 0); 207 if (Cardbus_mapreg_map(ca->ca_ct, reg, 208 CARDBUS_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 209 0, &bar_tag, &bar_memh, &bar_addr, &bar_size)) { 210 printf("%s: failed to map memory\n", 211 sc->sc_dev.dv_xname); 212 return (1); 213 } 214 215 if (cardbus_space == CARDBUS_CIS_ASI_ROM) { 216 cardbusreg_t exrom; 217 int save; 218 struct cardbus_rom_image_head rom_image; 219 struct cardbus_rom_image *p; 220 221 save = splhigh(); 222 /* enable rom address decoder */ 223 exrom = cardbus_conf_read(cc, cf, tag, reg); 224 cardbus_conf_write(cc, cf, tag, reg, exrom | 1); 225 226 command = cardbus_conf_read(cc, cf, tag, 227 CARDBUS_COMMAND_STATUS_REG); 228 cardbus_conf_write(cc, cf, tag, 229 CARDBUS_COMMAND_STATUS_REG, 230 command | CARDBUS_COMMAND_MEM_ENABLE); 231 232 if (cardbus_read_exrom(ca->ca_memt, bar_memh, 233 &rom_image)) 234 goto out; 235 236 SIMPLEQ_FOREACH(p, &rom_image, next) { 237 if (p->rom_image == 238 CARDBUS_CIS_ASI_ROM_IMAGE(cis_ptr)) { 239 bus_space_read_region_1(p->romt, 240 p->romh, CARDBUS_CIS_ADDR(cis_ptr), 241 tuples, MIN(p->image_size, len)); 242 found++; 243 break; 244 } 245 } 246 while ((p = SIMPLEQ_FIRST(&rom_image)) != NULL) { 247 SIMPLEQ_REMOVE_HEAD(&rom_image, next); 248 free(p, M_DEVBUF); 249 } 250 out: 251 exrom = cardbus_conf_read(cc, cf, tag, reg); 252 cardbus_conf_write(cc, cf, tag, reg, exrom & ~1); 253 splx(save); 254 } else { 255 command = cardbus_conf_read(cc, cf, tag, 256 CARDBUS_COMMAND_STATUS_REG); 257 cardbus_conf_write(cc, cf, tag, 258 CARDBUS_COMMAND_STATUS_REG, 259 command | CARDBUS_COMMAND_MEM_ENABLE); 260 /* XXX byte order? */ 261 bus_space_read_region_1(ca->ca_memt, bar_memh, 262 cis_ptr, tuples, MIN(bar_size, len)); 263 found++; 264 } 265 command = cardbus_conf_read(cc, cf, tag, 266 CARDBUS_COMMAND_STATUS_REG); 267 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, 268 command & ~CARDBUS_COMMAND_MEM_ENABLE); 269 cardbus_conf_write(cc, cf, tag, reg, 0); 270 271 Cardbus_mapreg_unmap(ca->ca_ct, reg, bar_tag, bar_memh, 272 bar_size); 273 break; 274 275 #ifdef DIAGNOSTIC 276 default: 277 panic("%s: bad CIS space (%d)", sc->sc_dev.dv_xname, 278 cardbus_space); 279 #endif 280 } 281 return (!found); 282 } 283 284 static void 285 parse_tuple(u_int8_t *tuple, int len, void *data) 286 { 287 struct cardbus_cis_info *cis = data; 288 char *p; 289 int i, bar_index; 290 291 switch (tuple[0]) { 292 case PCMCIA_CISTPL_MANFID: 293 if (tuple[1] != 4) { 294 DPRINTF(("%s: wrong length manufacturer id (%d)\n", 295 __func__, tuple[1])); 296 break; 297 } 298 cis->manufacturer = tuple[2] | (tuple[3] << 8); 299 cis->product = tuple[4] | (tuple[5] << 8); 300 break; 301 302 case PCMCIA_CISTPL_VERS_1: 303 memcpy(cis->cis1_info_buf, tuple + 2, tuple[1]); 304 i = 0; 305 p = cis->cis1_info_buf + 2; 306 while (i < 307 sizeof(cis->cis1_info) / sizeof(cis->cis1_info[0])) { 308 if (p >= cis->cis1_info_buf + tuple[1] || *p == '\xff') 309 break; 310 cis->cis1_info[i++] = p; 311 while (*p != '\0' && *p != '\xff') 312 p++; 313 if (*p == '\0') 314 p++; 315 } 316 break; 317 318 case PCMCIA_CISTPL_BAR: 319 if (tuple[1] != 6) { 320 DPRINTF(("%s: BAR with short length (%d)\n", 321 __func__, tuple[1])); 322 break; 323 } 324 bar_index = tuple[2] & 7; 325 if (bar_index == 0) { 326 DPRINTF(("%s: invalid ASI in BAR tuple\n", __func__)); 327 break; 328 } 329 bar_index--; 330 cis->bar[bar_index].flags = tuple[2]; 331 cis->bar[bar_index].size = 332 (tuple[4] << 0) | 333 (tuple[5] << 8) | 334 (tuple[6] << 16) | 335 (tuple[7] << 24); 336 break; 337 338 case PCMCIA_CISTPL_FUNCID: 339 cis->funcid = tuple[2]; 340 break; 341 342 case PCMCIA_CISTPL_FUNCE: 343 switch (cis->funcid) { 344 case PCMCIA_FUNCTION_SERIAL: 345 if (tuple[1] >= 2 && 346 /* XXX PCMCIA_TPLFE_TYPE_SERIAL_??? */ 347 tuple[2] == 0) { 348 cis->funce.serial.uart_type = tuple[3] & 0x1f; 349 cis->funce.serial.uart_present = 1; 350 } 351 break; 352 353 case PCMCIA_FUNCTION_NETWORK: 354 if (tuple[1] >= 8 && 355 tuple[2] == PCMCIA_TPLFE_TYPE_LAN_NID) { 356 if (tuple[3] > 357 sizeof(cis->funce.network.netid)) { 358 DPRINTF(("%s: unknown network id type " 359 "(len = %d)\n", 360 __func__, tuple[3])); 361 } else { 362 cis->funce.network.netid_present = 1; 363 memcpy(cis->funce.network.netid, 364 tuple + 4, tuple[3]); 365 } 366 } 367 break; 368 } 369 break; 370 } 371 } 372 373 /* 374 * int cardbus_attach_card(struct cardbus_softc *sc) 375 * 376 * This function attaches the card on the slot: turns on power, 377 * reads and analyses tuple, sets configuration index. 378 * 379 * This function returns the number of recognised device functions. 380 * If no functions are recognised, return 0. 381 */ 382 int 383 cardbus_attach_card(struct cardbus_softc *sc) 384 { 385 cardbus_chipset_tag_t cc; 386 cardbus_function_tag_t cf; 387 int cdstatus; 388 static int wildcard[CARDBUSCF_NLOCS] = { 389 CARDBUSCF_FUNCTION_DEFAULT 390 }; 391 392 cc = sc->sc_cc; 393 cf = sc->sc_cf; 394 395 DPRINTF(("cardbus_attach_card: cb%d start\n", 396 device_unit(&sc->sc_dev))); 397 398 /* inspect initial voltage */ 399 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 400 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 401 device_unit(&sc->sc_dev))); 402 return (0); 403 } 404 405 cardbus_rescan(&sc->sc_dev, "cardbus", wildcard); 406 return (1); /* XXX */ 407 } 408 409 int 410 cardbus_rescan(struct device *self, const char *ifattr, 411 const int *locators) 412 { 413 struct cardbus_softc *sc = device_private(self); 414 cardbus_chipset_tag_t cc; 415 cardbus_function_tag_t cf; 416 cardbustag_t tag; 417 cardbusreg_t id, class, cis_ptr; 418 cardbusreg_t bhlc, icr, lattimer; 419 int cdstatus; 420 int function, nfunction; 421 struct device *csc; 422 cardbus_devfunc_t ct; 423 424 cc = sc->sc_cc; 425 cf = sc->sc_cf; 426 427 /* inspect initial voltage */ 428 if ((cdstatus = (*cf->cardbus_ctrl)(cc, CARDBUS_CD)) == 0) { 429 DPRINTF(("%s: no CardBus card on cb%d\n", __func__, 430 device_unit(&sc->sc_dev))); 431 return (0); 432 } 433 434 /* 435 * XXX use fake function 8 to keep power on during whole 436 * configuration. 437 */ 438 enable_function(sc, cdstatus, 8); 439 function = 0; 440 441 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 442 443 /* 444 * Wait until power comes up. Maxmum 500 ms. 445 * 446 * XXX What is this for? The bridge driver ought to have waited 447 * XXX already. 448 */ 449 { 450 int i; 451 452 for (i = 0; i < 5; ++i) { 453 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 454 if (id != 0xffffffff && id != 0) { 455 break; 456 } 457 if (cold) { /* before kernel thread invoked */ 458 delay(100 * 1000); 459 } else { /* thread context */ 460 if (tsleep((void *)sc, PCATCH, "cardbus", 461 hz / 10) != EWOULDBLOCK) { 462 break; 463 } 464 } 465 } 466 if (i == 5) { 467 return (EIO); 468 } 469 } 470 471 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 472 DPRINTF(("%s bhlc 0x%08x -> ", sc->sc_dev.dv_xname, bhlc)); 473 nfunction = CARDBUS_HDRTYPE_MULTIFN(bhlc) ? 8 : 1; 474 475 for (function = 0; function < nfunction; function++) { 476 struct cardbus_attach_args ca; 477 int locs[CARDBUSCF_NLOCS]; 478 479 if (locators[CARDBUSCF_FUNCTION] != 480 CARDBUSCF_FUNCTION_DEFAULT && 481 locators[CARDBUSCF_FUNCTION] != function) 482 continue; 483 484 if (sc->sc_funcs[function]) 485 continue; 486 487 tag = cardbus_make_tag(cc, cf, sc->sc_bus, function); 488 489 id = cardbus_conf_read(cc, cf, tag, CARDBUS_ID_REG); 490 class = cardbus_conf_read(cc, cf, tag, CARDBUS_CLASS_REG); 491 cis_ptr = cardbus_conf_read(cc, cf, tag, CARDBUS_CIS_REG); 492 493 /* Invalid vendor ID value? */ 494 if (CARDBUS_VENDOR(id) == PCI_VENDOR_INVALID) { 495 continue; 496 } 497 498 DPRINTF(("cardbus_attach_card: " 499 "Vendor 0x%x, Product 0x%x, CIS 0x%x\n", 500 CARDBUS_VENDOR(id), CARDBUS_PRODUCT(id), cis_ptr)); 501 502 enable_function(sc, cdstatus, function); 503 504 /* clean up every BAR */ 505 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE0_REG, 0); 506 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE1_REG, 0); 507 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE2_REG, 0); 508 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE3_REG, 0); 509 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE4_REG, 0); 510 cardbus_conf_write(cc, cf, tag, CARDBUS_BASE5_REG, 0); 511 cardbus_conf_write(cc, cf, tag, CARDBUS_ROM_REG, 0); 512 513 /* set initial latency and cacheline size */ 514 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 515 icr = cardbus_conf_read(cc, cf, tag, CARDBUS_INTERRUPT_REG); 516 DPRINTF(("%s func%d icr 0x%08x bhlc 0x%08x -> ", 517 device_xname(&sc->sc_dev), function, icr, bhlc)); 518 bhlc &= ~(CARDBUS_CACHELINE_MASK << CARDBUS_CACHELINE_SHIFT); 519 bhlc |= (sc->sc_cacheline & CARDBUS_CACHELINE_MASK) << 520 CARDBUS_CACHELINE_SHIFT; 521 /* 522 * Set the initial value of the Latency Timer. 523 * 524 * While a PCI device owns the bus, its Latency 525 * Timer counts down bus cycles from its initial 526 * value to 0. Minimum Grant tells for how long 527 * the device wants to own the bus once it gets 528 * access, in units of 250ns. 529 * 530 * On a 33 MHz bus, there are 8 cycles per 250ns. 531 * So I multiply the Minimum Grant by 8 to find 532 * out the initial value of the Latency Timer. 533 * 534 * Avoid setting a Latency Timer less than 0x10, 535 * since the old code did not do that. 536 */ 537 lattimer = 538 MIN(sc->sc_max_lattimer, MAX(0x10, 8 * PCI_MIN_GNT(icr))); 539 if (PCI_LATTIMER(bhlc) < lattimer) { 540 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 541 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 542 } 543 544 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 545 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 546 DPRINTF(("0x%08x\n", bhlc)); 547 548 /* 549 * We need to allocate the ct here, since we might 550 * need it when reading the CIS 551 */ 552 if ((ct = malloc(sizeof(struct cardbus_devfunc), 553 M_DEVBUF, M_NOWAIT)) == NULL) { 554 panic("no room for cardbus_tag"); 555 } 556 557 ct->ct_bhlc = bhlc; 558 ct->ct_cc = sc->sc_cc; 559 ct->ct_cf = sc->sc_cf; 560 ct->ct_bus = sc->sc_bus; 561 ct->ct_func = function; 562 ct->ct_sc = sc; 563 sc->sc_funcs[function] = ct; 564 565 memset(&ca, 0, sizeof(ca)); 566 567 ca.ca_ct = ct; 568 569 ca.ca_iot = sc->sc_iot; 570 ca.ca_memt = sc->sc_memt; 571 ca.ca_dmat = sc->sc_dmat; 572 573 #if rbus 574 ca.ca_rbus_iot = sc->sc_rbus_iot; 575 ca.ca_rbus_memt= sc->sc_rbus_memt; 576 #endif 577 578 ca.ca_tag = tag; 579 ca.ca_bus = sc->sc_bus; 580 ca.ca_function = function; 581 ca.ca_id = id; 582 ca.ca_class = class; 583 584 ca.ca_intrline = sc->sc_intrline; 585 586 if (cis_ptr != 0) { 587 #define TUPLESIZE 2048 588 u_int8_t *tuple = malloc(TUPLESIZE, M_DEVBUF, M_WAITOK); 589 if (cardbus_read_tuples(&ca, cis_ptr, 590 tuple, TUPLESIZE)) { 591 printf("cardbus_attach_card: " 592 "failed to read CIS\n"); 593 } else { 594 #ifdef CARDBUS_DEBUG 595 decode_tuples(tuple, TUPLESIZE, 596 print_tuple, NULL); 597 #endif 598 decode_tuples(tuple, TUPLESIZE, 599 parse_tuple, &ca.ca_cis); 600 } 601 free(tuple, M_DEVBUF); 602 } 603 604 locs[CARDBUSCF_FUNCTION] = function; 605 606 if ((csc = config_found_sm_loc((void *)sc, "cardbus", locs, 607 &ca, cardbusprint, config_stdsubmatch)) == NULL) { 608 /* do not match */ 609 disable_function(sc, function); 610 sc->sc_funcs[function] = NULL; 611 free(ct, M_DEVBUF); 612 } else { 613 /* found */ 614 ct->ct_device = csc; 615 } 616 } 617 /* 618 * XXX power down pseudo function 8 (this will power down the card 619 * if no functions were attached). 620 */ 621 disable_function(sc, 8); 622 623 return (0); 624 } 625 626 static int 627 cardbusprint(void *aux, const char *pnp) 628 { 629 struct cardbus_attach_args *ca = aux; 630 char devinfo[256]; 631 int i; 632 633 if (pnp) { 634 pci_devinfo(ca->ca_id, ca->ca_class, 1, devinfo, 635 sizeof(devinfo)); 636 for (i = 0; i < 4; i++) { 637 if (ca->ca_cis.cis1_info[i] == NULL) 638 break; 639 if (i) 640 aprint_normal(", "); 641 aprint_normal("%s", ca->ca_cis.cis1_info[i]); 642 } 643 aprint_verbose("%s(manufacturer 0x%x, product 0x%x)", 644 i ? " " : "", 645 ca->ca_cis.manufacturer, ca->ca_cis.product); 646 aprint_normal(" %s at %s", devinfo, pnp); 647 } 648 aprint_normal(" function %d", ca->ca_function); 649 650 return (UNCONF); 651 } 652 653 /* 654 * void cardbus_detach_card(struct cardbus_softc *sc) 655 * 656 * This function detaches the card on the slot: detach device data 657 * structure and turns off the power. 658 * 659 * This function must not be called under interrupt context. 660 */ 661 void 662 cardbus_detach_card(struct cardbus_softc *sc) 663 { 664 int f; 665 struct cardbus_devfunc *ct; 666 667 for (f = 0; f < 8; f++) { 668 ct = sc->sc_funcs[f]; 669 if (!ct) 670 continue; 671 672 DPRINTF(("%s: detaching %s\n", sc->sc_dev.dv_xname, 673 ct->ct_device->dv_xname)); 674 /* call device detach function */ 675 676 if (config_detach(ct->ct_device, 0) != 0) { 677 printf("%s: cannot detach dev %s, function %d\n", 678 sc->sc_dev.dv_xname, ct->ct_device->dv_xname, 679 ct->ct_func); 680 } 681 } 682 683 sc->sc_poweron_func = 0; 684 (*sc->sc_cf->cardbus_power)(sc->sc_cc, 685 CARDBUS_VCC_0V | CARDBUS_VPP_0V); 686 } 687 688 void 689 cardbus_childdetached(struct device *self, struct device *child) 690 { 691 struct cardbus_softc *sc = device_private(self); 692 struct cardbus_devfunc *ct; 693 694 ct = sc->sc_funcs[device_locator(child, CARDBUSCF_FUNCTION)]; 695 KASSERT(ct->ct_device == child); 696 697 sc->sc_poweron_func &= ~(1 << ct->ct_func); 698 sc->sc_funcs[ct->ct_func] = NULL; 699 free(ct, M_DEVBUF); 700 } 701 702 /* 703 * void *cardbus_intr_establish(cc, cf, irq, level, func, arg) 704 * Interrupt handler of pccard. 705 * args: 706 * cardbus_chipset_tag_t *cc 707 * int irq: 708 */ 709 void * 710 cardbus_intr_establish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 711 cardbus_intr_handle_t irq, int level, int (*func)(void *), void *arg) 712 { 713 714 DPRINTF(("- cardbus_intr_establish: irq %d\n", irq)); 715 return ((*cf->cardbus_intr_establish)(cc, irq, level, func, arg)); 716 } 717 718 /* 719 * void cardbus_intr_disestablish(cc, cf, handler) 720 * Interrupt handler of pccard. 721 * args: 722 * cardbus_chipset_tag_t *cc 723 */ 724 void 725 cardbus_intr_disestablish(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 726 void *handler) 727 { 728 729 DPRINTF(("- pccard_intr_disestablish\n")); 730 (*cf->cardbus_intr_disestablish)(cc, handler); 731 } 732 733 /* 734 * XXX this should be merged with cardbus_function_{enable,disable}, 735 * but we don't have a ct when these functions are called. 736 */ 737 static void 738 enable_function(struct cardbus_softc *sc, int cdstatus, int function) 739 { 740 741 if (sc->sc_poweron_func == 0) { 742 /* switch to 3V and/or wait for power to stabilize */ 743 if (cdstatus & CARDBUS_3V_CARD) { 744 /* 745 * sc_poweron_func must be substituted before 746 * entering sleep, in order to avoid turn on 747 * power twice. 748 */ 749 sc->sc_poweron_func |= (1 << function); 750 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V); 751 } else { 752 /* No cards other than 3.3V cards. */ 753 return; 754 } 755 (*sc->sc_cf->cardbus_ctrl)(sc->sc_cc, CARDBUS_RESET); 756 } 757 sc->sc_poweron_func |= (1 << function); 758 } 759 760 static void 761 disable_function(struct cardbus_softc *sc, int function) 762 { 763 764 sc->sc_poweron_func &= ~(1 << function); 765 if (sc->sc_poweron_func == 0) { 766 /* power-off because no functions are enabled */ 767 (*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_0V); 768 } 769 } 770 771 /* 772 * int cardbus_function_enable(struct cardbus_softc *sc, int func) 773 * 774 * This function enables a function on a card. When no power is 775 * applied on the card, power will be applied on it. 776 */ 777 int 778 cardbus_function_enable(struct cardbus_softc *sc, int func) 779 { 780 cardbus_chipset_tag_t cc = sc->sc_cc; 781 cardbus_function_tag_t cf = sc->sc_cf; 782 cardbus_devfunc_t ct; 783 cardbusreg_t command; 784 cardbustag_t tag; 785 786 DPRINTF(("entering cardbus_function_enable... ")); 787 788 /* entering critical area */ 789 790 /* XXX: sc_vold should be used */ 791 enable_function(sc, CARDBUS_3V_CARD, func); 792 793 /* exiting critical area */ 794 795 tag = cardbus_make_tag(cc, cf, sc->sc_bus, func); 796 797 command = cardbus_conf_read(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG); 798 command |= (CARDBUS_COMMAND_MEM_ENABLE | CARDBUS_COMMAND_IO_ENABLE | 799 CARDBUS_COMMAND_MASTER_ENABLE); /* XXX: good guess needed */ 800 801 cardbus_conf_write(cc, cf, tag, CARDBUS_COMMAND_STATUS_REG, command); 802 803 if ((ct = sc->sc_funcs[func]) != NULL) 804 Cardbus_conf_write(ct, tag, CARDBUS_BHLC_REG, ct->ct_bhlc); 805 806 cardbus_free_tag(cc, cf, tag); 807 808 DPRINTF(("%x\n", sc->sc_poweron_func)); 809 810 return (0); 811 } 812 813 /* 814 * int cardbus_function_disable(struct cardbus_softc *, int func) 815 * 816 * This function disable a function on a card. When no functions are 817 * enabled, it turns off the power. 818 */ 819 int 820 cardbus_function_disable(struct cardbus_softc *sc, int func) 821 { 822 823 DPRINTF(("entering cardbus_function_disable... ")); 824 825 disable_function(sc, func); 826 827 return (0); 828 } 829 830 /* 831 * int cardbus_get_capability(cardbus_chipset_tag_t cc, 832 * cardbus_function_tag_t cf, cardbustag_t tag, int capid, int *offset, 833 * cardbusreg_t *value) 834 * 835 * Find the specified PCI capability. 836 */ 837 int 838 cardbus_get_capability(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, 839 cardbustag_t tag, int capid, int *offset, cardbusreg_t *value) 840 { 841 cardbusreg_t reg; 842 unsigned int ofs; 843 844 reg = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 845 if (!(reg & PCI_STATUS_CAPLIST_SUPPORT)) 846 return (0); 847 848 ofs = PCI_CAPLIST_PTR(cardbus_conf_read(cc, cf, tag, 849 PCI_CAPLISTPTR_REG)); 850 while (ofs != 0) { 851 #ifdef DIAGNOSTIC 852 if ((ofs & 3) || (ofs < 0x40)) 853 panic("cardbus_get_capability"); 854 #endif 855 reg = cardbus_conf_read(cc, cf, tag, ofs); 856 if (PCI_CAPLIST_CAP(reg) == capid) { 857 if (offset) 858 *offset = ofs; 859 if (value) 860 *value = reg; 861 return (1); 862 } 863 ofs = PCI_CAPLIST_NEXT(reg); 864 } 865 866 return (0); 867 } 868 869 /* 870 * below this line, there are some functions for decoding tuples. 871 * They should go out from this file. 872 */ 873 874 static u_int8_t * 875 decode_tuple(u_int8_t *, u_int8_t *, tuple_decode_func, void *); 876 877 static int 878 decode_tuples(u_int8_t *tuple, int buflen, tuple_decode_func func, void *data) 879 { 880 u_int8_t *tp = tuple; 881 882 if (PCMCIA_CISTPL_LINKTARGET != *tuple) { 883 DPRINTF(("WRONG TUPLE: 0x%x\n", *tuple)); 884 return (0); 885 } 886 887 while ((tp = decode_tuple(tp, tuple + buflen, func, data)) != NULL) 888 ; 889 890 return (1); 891 } 892 893 static u_int8_t * 894 decode_tuple(u_int8_t *tuple, u_int8_t *end, 895 tuple_decode_func func, void *data) 896 { 897 u_int8_t type; 898 u_int8_t len; 899 900 type = tuple[0]; 901 switch (type) { 902 case PCMCIA_CISTPL_NULL: 903 case PCMCIA_CISTPL_END: 904 len = 1; 905 break; 906 default: 907 if (tuple + 2 > end) 908 return (NULL); 909 len = tuple[1] + 2; 910 break; 911 } 912 913 if (tuple + len > end) 914 return (NULL); 915 916 (*func)(tuple, len, data); 917 918 if (type == PCMCIA_CISTPL_END || tuple + len == end) 919 return (NULL); 920 921 return (tuple + len); 922 } 923 924 /* 925 * XXX: this is another reason why this code should be shared with PCI. 926 */ 927 int 928 cardbus_powerstate(cardbus_devfunc_t ct, pcitag_t tag, const int *newstate, 929 int *oldstate) 930 { 931 cardbus_chipset_tag_t cc = ct->ct_cc; 932 cardbus_function_tag_t cf = ct->ct_cf; 933 934 int offset; 935 pcireg_t value, cap, now; 936 937 if (!cardbus_get_capability(cc, cf, tag, PCI_CAP_PWRMGMT, &offset, 938 &value)) 939 return EOPNOTSUPP; 940 941 cap = value >> 16; 942 value = cardbus_conf_read(cc, cf, tag, offset + PCI_PMCSR); 943 now = value & PCI_PMCSR_STATE_MASK; 944 value &= ~PCI_PMCSR_STATE_MASK; 945 if (oldstate) { 946 switch (now) { 947 case PCI_PMCSR_STATE_D0: 948 *oldstate = PCI_PWR_D0; 949 break; 950 case PCI_PMCSR_STATE_D1: 951 *oldstate = PCI_PWR_D1; 952 break; 953 case PCI_PMCSR_STATE_D2: 954 *oldstate = PCI_PWR_D2; 955 break; 956 case PCI_PMCSR_STATE_D3: 957 *oldstate = PCI_PWR_D3; 958 break; 959 default: 960 return EINVAL; 961 } 962 } 963 if (newstate == NULL) 964 return 0; 965 switch (*newstate) { 966 case PCI_PWR_D0: 967 if (now == PCI_PMCSR_STATE_D0) 968 return 0; 969 value |= PCI_PMCSR_STATE_D0; 970 break; 971 case PCI_PWR_D1: 972 if (now == PCI_PMCSR_STATE_D1) 973 return 0; 974 if (now == PCI_PMCSR_STATE_D2 || now == PCI_PMCSR_STATE_D3) 975 return EINVAL; 976 if (!(cap & PCI_PMCR_D1SUPP)) 977 return EOPNOTSUPP; 978 value |= PCI_PMCSR_STATE_D1; 979 break; 980 case PCI_PWR_D2: 981 if (now == PCI_PMCSR_STATE_D2) 982 return 0; 983 if (now == PCI_PMCSR_STATE_D3) 984 return EINVAL; 985 if (!(cap & PCI_PMCR_D2SUPP)) 986 return EOPNOTSUPP; 987 value |= PCI_PMCSR_STATE_D2; 988 break; 989 case PCI_PWR_D3: 990 if (now == PCI_PMCSR_STATE_D3) 991 return 0; 992 value |= PCI_PMCSR_STATE_D3; 993 break; 994 default: 995 return EINVAL; 996 } 997 cardbus_conf_write(cc, cf, tag, offset + PCI_PMCSR, value); 998 DELAY(1000); 999 1000 return 0; 1001 } 1002 1003 int 1004 cardbus_setpowerstate(const char *dvname, cardbus_devfunc_t ct, pcitag_t tag, 1005 int newpwr) 1006 { 1007 int oldpwr, error; 1008 1009 if ((error = cardbus_powerstate(ct, tag, &newpwr, &oldpwr)) != 0) 1010 return error; 1011 1012 if (oldpwr == newpwr) 1013 return 0; 1014 1015 if (oldpwr > newpwr) { 1016 printf("%s: sleeping to power state D%d\n", dvname, oldpwr); 1017 return 0; 1018 } 1019 1020 /* oldpwr < newpwr */ 1021 switch (oldpwr) { 1022 case PCI_PWR_D3: 1023 /* 1024 * XXX: This is because none of the devices do 1025 * the necessary song and dance for now to wakeup 1026 * Once this 1027 */ 1028 printf("%s: cannot wake up from power state D%d\n", 1029 dvname, oldpwr); 1030 return EINVAL; 1031 default: 1032 printf("%s: waking up from power state D%d\n", 1033 dvname, oldpwr); 1034 return 0; 1035 } 1036 } 1037 1038 1039 #ifdef CARDBUS_DEBUG 1040 static const char *tuple_name(int); 1041 static const char *tuple_names[] = { 1042 "TPL_NULL", "TPL_DEVICE", "Reserved", "Reserved", /* 0-3 */ 1043 "CONFIG_CB", "CFTABLE_ENTRY_CB", "Reserved", "BAR", /* 4-7 */ 1044 "Reserved", "Reserved", "Reserved", "Reserved", /* 8-B */ 1045 "Reserved", "Reserved", "Reserved", "Reserved", /* C-F */ 1046 "CHECKSUM", "LONGLINK_A", "LONGLINK_C", "LINKTARGET", /* 10-13 */ 1047 "NO_LINK", "VERS_1", "ALTSTR", "DEVICE_A", 1048 "JEDEC_C", "JEDEC_A", "CONFIG", "CFTABLE_ENTRY", 1049 "DEVICE_OC", "DEVICE_OA", "DEVICE_GEO", "DEVICE_GEO_A", 1050 "MANFID", "FUNCID", "FUNCE", "SWIL", /* 20-23 */ 1051 "Reserved", "Reserved", "Reserved", "Reserved", /* 24-27 */ 1052 "Reserved", "Reserved", "Reserved", "Reserved", /* 28-2B */ 1053 "Reserved", "Reserved", "Reserved", "Reserved", /* 2C-2F */ 1054 "Reserved", "Reserved", "Reserved", "Reserved", /* 30-33 */ 1055 "Reserved", "Reserved", "Reserved", "Reserved", /* 34-37 */ 1056 "Reserved", "Reserved", "Reserved", "Reserved", /* 38-3B */ 1057 "Reserved", "Reserved", "Reserved", "Reserved", /* 3C-3F */ 1058 "VERS_2", "FORMAT", "GEOMETRY", "BYTEORDER", 1059 "DATE", "BATTERY", "ORG" 1060 }; 1061 #define NAME_LEN(x) (sizeof x / sizeof(x[0])) 1062 1063 static const char * 1064 tuple_name(int type) 1065 { 1066 1067 if (0 <= type && type < NAME_LEN(tuple_names)) { 1068 return (tuple_names[type]); 1069 } else if (type == 0xff) { 1070 return ("END"); 1071 } else { 1072 return ("Reserved"); 1073 } 1074 } 1075 1076 static void 1077 print_tuple(u_int8_t *tuple, int len, void *data) 1078 { 1079 int i; 1080 1081 printf("tuple: %s len %d\n", tuple_name(tuple[0]), len); 1082 1083 for (i = 0; i < len; ++i) { 1084 if (i % 16 == 0) { 1085 printf(" 0x%2x:", i); 1086 } 1087 printf(" %x", tuple[i]); 1088 if (i % 16 == 15) { 1089 printf("\n"); 1090 } 1091 } 1092 if (i % 16 != 0) { 1093 printf("\n"); 1094 } 1095 } 1096 #endif 1097