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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 | /* * Sonics Silicon Backplane * PCMCIA-Hostbus related functions * * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> * Copyright 2007-2008 Michael Buesch <m@bues.ch> * * Licensed under the GNU/GPL. See COPYING for details. */ #include <linux/ssb/ssb.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/etherdevice.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> #include <pcmcia/cisreg.h> #include "ssb_private.h" /* Define the following to 1 to enable a printk on each coreswitch. */ #define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG 0 /* PCMCIA configuration registers */ #define SSB_PCMCIA_ADDRESS0 0x2E #define SSB_PCMCIA_ADDRESS1 0x30 #define SSB_PCMCIA_ADDRESS2 0x32 #define SSB_PCMCIA_MEMSEG 0x34 #define SSB_PCMCIA_SPROMCTL 0x36 #define SSB_PCMCIA_SPROMCTL_IDLE 0 #define SSB_PCMCIA_SPROMCTL_WRITE 1 #define SSB_PCMCIA_SPROMCTL_READ 2 #define SSB_PCMCIA_SPROMCTL_WRITEEN 4 #define SSB_PCMCIA_SPROMCTL_WRITEDIS 7 #define SSB_PCMCIA_SPROMCTL_DONE 8 #define SSB_PCMCIA_SPROM_DATALO 0x38 #define SSB_PCMCIA_SPROM_DATAHI 0x3A #define SSB_PCMCIA_SPROM_ADDRLO 0x3C #define SSB_PCMCIA_SPROM_ADDRHI 0x3E /* Hardware invariants CIS tuples */ #define SSB_PCMCIA_CIS 0x80 #define SSB_PCMCIA_CIS_ID 0x01 #define SSB_PCMCIA_CIS_BOARDREV 0x02 #define SSB_PCMCIA_CIS_PA 0x03 #define SSB_PCMCIA_CIS_PA_PA0B0_LO 0 #define SSB_PCMCIA_CIS_PA_PA0B0_HI 1 #define SSB_PCMCIA_CIS_PA_PA0B1_LO 2 #define SSB_PCMCIA_CIS_PA_PA0B1_HI 3 #define SSB_PCMCIA_CIS_PA_PA0B2_LO 4 #define SSB_PCMCIA_CIS_PA_PA0B2_HI 5 #define SSB_PCMCIA_CIS_PA_ITSSI 6 #define SSB_PCMCIA_CIS_PA_MAXPOW 7 #define SSB_PCMCIA_CIS_OEMNAME 0x04 #define SSB_PCMCIA_CIS_CCODE 0x05 #define SSB_PCMCIA_CIS_ANTENNA 0x06 #define SSB_PCMCIA_CIS_ANTGAIN 0x07 #define SSB_PCMCIA_CIS_BFLAGS 0x08 #define SSB_PCMCIA_CIS_LEDS 0x09 /* PCMCIA SPROM size. */ #define SSB_PCMCIA_SPROM_SIZE 256 #define SSB_PCMCIA_SPROM_SIZE_BYTES (SSB_PCMCIA_SPROM_SIZE * sizeof(u16)) /* Write to a PCMCIA configuration register. */ static int ssb_pcmcia_cfg_write(struct ssb_bus *bus, u8 offset, u8 value) { int res; res = pcmcia_write_config_byte(bus->host_pcmcia, offset, value); if (unlikely(res != 0)) return -EBUSY; return 0; } /* Read from a PCMCIA configuration register. */ static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value) { int res; res = pcmcia_read_config_byte(bus->host_pcmcia, offset, value); if (unlikely(res != 0)) return -EBUSY; return 0; } int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus, u8 coreidx) { int err; int attempts = 0; u32 cur_core; u32 addr; u32 read_addr; u8 val; addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE; while (1) { err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0, (addr & 0x0000F000) >> 12); if (err) goto error; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1, (addr & 0x00FF0000) >> 16); if (err) goto error; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2, (addr & 0xFF000000) >> 24); if (err) goto error; read_addr = 0; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val); if (err) goto error; read_addr |= ((u32)(val & 0x0F)) << 12; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val); if (err) goto error; read_addr |= ((u32)val) << 16; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val); if (err) goto error; read_addr |= ((u32)val) << 24; cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE; if (cur_core == coreidx) break; err = -ETIMEDOUT; if (attempts++ > SSB_BAR0_MAX_RETRIES) goto error; udelay(10); } return 0; error: ssb_err("Failed to switch to core %u\n", coreidx); return err; } static int ssb_pcmcia_switch_core(struct ssb_bus *bus, struct ssb_device *dev) { int err; #if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG ssb_info("Switching to %s core, index %d\n", ssb_core_name(dev->id.coreid), dev->core_index); #endif err = ssb_pcmcia_switch_coreidx(bus, dev->core_index); if (!err) bus->mapped_device = dev; return err; } int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg) { int attempts = 0; int err; u8 val; SSB_WARN_ON((seg != 0) && (seg != 1)); while (1) { err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg); if (err) goto error; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val); if (err) goto error; if (val == seg) break; err = -ETIMEDOUT; if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES)) goto error; udelay(10); } bus->mapped_pcmcia_seg = seg; return 0; error: ssb_err("Failed to switch pcmcia segment\n"); return err; } static int select_core_and_segment(struct ssb_device *dev, u16 *offset) { struct ssb_bus *bus = dev->bus; int err; u8 need_segment; if (*offset >= 0x800) { *offset -= 0x800; need_segment = 1; } else need_segment = 0; if (unlikely(dev != bus->mapped_device)) { err = ssb_pcmcia_switch_core(bus, dev); if (unlikely(err)) return err; } if (unlikely(need_segment != bus->mapped_pcmcia_seg)) { err = ssb_pcmcia_switch_segment(bus, need_segment); if (unlikely(err)) return err; } return 0; } static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; u8 value = 0xFF; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) value = readb(bus->mmio + offset); spin_unlock_irqrestore(&bus->bar_lock, flags); return value; } static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; u16 value = 0xFFFF; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) value = readw(bus->mmio + offset); spin_unlock_irqrestore(&bus->bar_lock, flags); return value; } static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) { lo = readw(bus->mmio + offset); hi = readw(bus->mmio + offset + 2); } spin_unlock_irqrestore(&bus->bar_lock, flags); return (lo | (hi << 16)); } #ifdef CONFIG_SSB_BLOCKIO static void ssb_pcmcia_block_read(struct ssb_device *dev, void *buffer, size_t count, u16 offset, u8 reg_width) { struct ssb_bus *bus = dev->bus; unsigned long flags; void __iomem *addr = bus->mmio + offset; int err; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (unlikely(err)) { memset(buffer, 0xFF, count); goto unlock; } switch (reg_width) { case sizeof(u8): { u8 *buf = buffer; while (count) { *buf = __raw_readb(addr); buf++; count--; } break; } case sizeof(u16): { __le16 *buf = buffer; SSB_WARN_ON(count & 1); while (count) { *buf = (__force __le16)__raw_readw(addr); buf++; count -= 2; } break; } case sizeof(u32): { __le16 *buf = buffer; SSB_WARN_ON(count & 3); while (count) { *buf = (__force __le16)__raw_readw(addr); buf++; *buf = (__force __le16)__raw_readw(addr + 2); buf++; count -= 4; } break; } default: SSB_WARN_ON(1); } unlock: spin_unlock_irqrestore(&bus->bar_lock, flags); } #endif /* CONFIG_SSB_BLOCKIO */ static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) writeb(value, bus->mmio + offset); mmiowb(); spin_unlock_irqrestore(&bus->bar_lock, flags); } static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) writew(value, bus->mmio + offset); mmiowb(); spin_unlock_irqrestore(&bus->bar_lock, flags); } static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value) { struct ssb_bus *bus = dev->bus; unsigned long flags; int err; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (likely(!err)) { writew((value & 0x0000FFFF), bus->mmio + offset); writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2); } mmiowb(); spin_unlock_irqrestore(&bus->bar_lock, flags); } #ifdef CONFIG_SSB_BLOCKIO static void ssb_pcmcia_block_write(struct ssb_device *dev, const void *buffer, size_t count, u16 offset, u8 reg_width) { struct ssb_bus *bus = dev->bus; unsigned long flags; void __iomem *addr = bus->mmio + offset; int err; spin_lock_irqsave(&bus->bar_lock, flags); err = select_core_and_segment(dev, &offset); if (unlikely(err)) goto unlock; switch (reg_width) { case sizeof(u8): { const u8 *buf = buffer; while (count) { __raw_writeb(*buf, addr); buf++; count--; } break; } case sizeof(u16): { const __le16 *buf = buffer; SSB_WARN_ON(count & 1); while (count) { __raw_writew((__force u16)(*buf), addr); buf++; count -= 2; } break; } case sizeof(u32): { const __le16 *buf = buffer; SSB_WARN_ON(count & 3); while (count) { __raw_writew((__force u16)(*buf), addr); buf++; __raw_writew((__force u16)(*buf), addr + 2); buf++; count -= 4; } break; } default: SSB_WARN_ON(1); } unlock: mmiowb(); spin_unlock_irqrestore(&bus->bar_lock, flags); } #endif /* CONFIG_SSB_BLOCKIO */ /* Not "static", as it's used in main.c */ const struct ssb_bus_ops ssb_pcmcia_ops = { .read8 = ssb_pcmcia_read8, .read16 = ssb_pcmcia_read16, .read32 = ssb_pcmcia_read32, .write8 = ssb_pcmcia_write8, .write16 = ssb_pcmcia_write16, .write32 = ssb_pcmcia_write32, #ifdef CONFIG_SSB_BLOCKIO .block_read = ssb_pcmcia_block_read, .block_write = ssb_pcmcia_block_write, #endif }; static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command) { unsigned int i; int err; u8 value; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROMCTL, command); if (err) return err; for (i = 0; i < 1000; i++) { err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROMCTL, &value); if (err) return err; if (value & SSB_PCMCIA_SPROMCTL_DONE) return 0; udelay(10); } return -ETIMEDOUT; } /* offset is the 16bit word offset */ static int ssb_pcmcia_sprom_read(struct ssb_bus *bus, u16 offset, u16 *value) { int err; u8 lo, hi; offset *= 2; /* Make byte offset */ err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO, (offset & 0x00FF)); if (err) return err; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI, (offset & 0xFF00) >> 8); if (err) return err; err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_READ); if (err) return err; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATALO, &lo); if (err) return err; err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATAHI, &hi); if (err) return err; *value = (lo | (((u16)hi) << 8)); return 0; } /* offset is the 16bit word offset */ static int ssb_pcmcia_sprom_write(struct ssb_bus *bus, u16 offset, u16 value) { int err; offset *= 2; /* Make byte offset */ err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO, (offset & 0x00FF)); if (err) return err; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI, (offset & 0xFF00) >> 8); if (err) return err; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATALO, (value & 0x00FF)); if (err) return err; err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATAHI, (value & 0xFF00) >> 8); if (err) return err; err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITE); if (err) return err; msleep(20); return 0; } /* Read the SPROM image. bufsize is in 16bit words. */ static int ssb_pcmcia_sprom_read_all(struct ssb_bus *bus, u16 *sprom) { int err, i; for (i = 0; i < SSB_PCMCIA_SPROM_SIZE; i++) { err = ssb_pcmcia_sprom_read(bus, i, &sprom[i]); if (err) return err; } return 0; } /* Write the SPROM image. size is in 16bit words. */ static int ssb_pcmcia_sprom_write_all(struct ssb_bus *bus, const u16 *sprom) { int i, err; bool failed = 0; size_t size = SSB_PCMCIA_SPROM_SIZE; ssb_notice("Writing SPROM. Do NOT turn off the power! Please stand by...\n"); err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN); if (err) { ssb_notice("Could not enable SPROM write access\n"); return -EBUSY; } ssb_notice("[ 0%%"); msleep(500); for (i = 0; i < size; i++) { if (i == size / 4) ssb_cont("25%%"); else if (i == size / 2) ssb_cont("50%%"); else if (i == (size * 3) / 4) ssb_cont("75%%"); else if (i % 2) ssb_cont("."); err = ssb_pcmcia_sprom_write(bus, i, sprom[i]); if (err) { ssb_notice("Failed to write to SPROM\n"); failed = 1; break; } } err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS); if (err) { ssb_notice("Could not disable SPROM write access\n"); failed = 1; } msleep(500); if (!failed) { ssb_cont("100%% ]\n"); ssb_notice("SPROM written\n"); } return failed ? -EBUSY : 0; } static int ssb_pcmcia_sprom_check_crc(const u16 *sprom, size_t size) { //TODO return 0; } #define GOTO_ERROR_ON(condition, description) do { \ if (unlikely(condition)) { \ error_description = description; \ goto error; \ } \ } while (0) static int ssb_pcmcia_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, void *priv) { struct ssb_sprom *sprom = priv; if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) return -EINVAL; if (tuple->TupleDataLen != ETH_ALEN + 2) return -EINVAL; if (tuple->TupleData[1] != ETH_ALEN) return -EINVAL; memcpy(sprom->il0mac, &tuple->TupleData[2], ETH_ALEN); return 0; }; static int ssb_pcmcia_do_get_invariants(struct pcmcia_device *p_dev, tuple_t *tuple, void *priv) { struct ssb_init_invariants *iv = priv; struct ssb_sprom *sprom = &iv->sprom; struct ssb_boardinfo *bi = &iv->boardinfo; const char *error_description; GOTO_ERROR_ON(tuple->TupleDataLen < 1, "VEN tpl < 1"); switch (tuple->TupleData[0]) { case SSB_PCMCIA_CIS_ID: GOTO_ERROR_ON((tuple->TupleDataLen != 5) && (tuple->TupleDataLen != 7), "id tpl size"); bi->vendor = tuple->TupleData[1] | ((u16)tuple->TupleData[2] << 8); break; case SSB_PCMCIA_CIS_BOARDREV: GOTO_ERROR_ON(tuple->TupleDataLen != 2, "boardrev tpl size"); sprom->board_rev = tuple->TupleData[1]; break; case SSB_PCMCIA_CIS_PA: GOTO_ERROR_ON((tuple->TupleDataLen != 9) && (tuple->TupleDataLen != 10), "pa tpl size"); sprom->pa0b0 = tuple->TupleData[1] | ((u16)tuple->TupleData[2] << 8); sprom->pa0b1 = tuple->TupleData[3] | ((u16)tuple->TupleData[4] << 8); sprom->pa0b2 = tuple->TupleData[5] | ((u16)tuple->TupleData[6] << 8); sprom->itssi_a = tuple->TupleData[7]; sprom->itssi_bg = tuple->TupleData[7]; sprom->maxpwr_a = tuple->TupleData[8]; sprom->maxpwr_bg = tuple->TupleData[8]; break; case SSB_PCMCIA_CIS_OEMNAME: /* We ignore this. */ break; case SSB_PCMCIA_CIS_CCODE: GOTO_ERROR_ON(tuple->TupleDataLen != 2, "ccode tpl size"); sprom->country_code = tuple->TupleData[1]; break; case SSB_PCMCIA_CIS_ANTENNA: GOTO_ERROR_ON(tuple->TupleDataLen != 2, "ant tpl size"); sprom->ant_available_a = tuple->TupleData[1]; sprom->ant_available_bg = tuple->TupleData[1]; break; case SSB_PCMCIA_CIS_ANTGAIN: GOTO_ERROR_ON(tuple->TupleDataLen != 2, "antg tpl size"); sprom->antenna_gain.a0 = tuple->TupleData[1]; sprom->antenna_gain.a1 = tuple->TupleData[1]; sprom->antenna_gain.a2 = tuple->TupleData[1]; sprom->antenna_gain.a3 = tuple->TupleData[1]; break; case SSB_PCMCIA_CIS_BFLAGS: GOTO_ERROR_ON((tuple->TupleDataLen != 3) && (tuple->TupleDataLen != 5), "bfl tpl size"); sprom->boardflags_lo = tuple->TupleData[1] | ((u16)tuple->TupleData[2] << 8); break; case SSB_PCMCIA_CIS_LEDS: GOTO_ERROR_ON(tuple->TupleDataLen != 5, "leds tpl size"); sprom->gpio0 = tuple->TupleData[1]; sprom->gpio1 = tuple->TupleData[2]; sprom->gpio2 = tuple->TupleData[3]; sprom->gpio3 = tuple->TupleData[4]; break; } return -ENOSPC; /* continue with next entry */ error: ssb_err( "PCMCIA: Failed to fetch device invariants: %s\n", error_description); return -ENODEV; } int ssb_pcmcia_get_invariants(struct ssb_bus *bus, struct ssb_init_invariants *iv) { struct ssb_sprom *sprom = &iv->sprom; int res; memset(sprom, 0xFF, sizeof(*sprom)); sprom->revision = 1; sprom->boardflags_lo = 0; sprom->boardflags_hi = 0; /* First fetch the MAC address. */ res = pcmcia_loop_tuple(bus->host_pcmcia, CISTPL_FUNCE, ssb_pcmcia_get_mac, sprom); if (res != 0) { ssb_err( "PCMCIA: Failed to fetch MAC address\n"); return -ENODEV; } /* Fetch the vendor specific tuples. */ res = pcmcia_loop_tuple(bus->host_pcmcia, SSB_PCMCIA_CIS, ssb_pcmcia_do_get_invariants, iv); if ((res == 0) || (res == -ENOSPC)) return 0; ssb_err( "PCMCIA: Failed to fetch device invariants\n"); return -ENODEV; } static ssize_t ssb_pcmcia_attr_sprom_show(struct device *pcmciadev, struct device_attribute *attr, char *buf) { struct pcmcia_device *pdev = container_of(pcmciadev, struct pcmcia_device, dev); struct ssb_bus *bus; bus = ssb_pcmcia_dev_to_bus(pdev); if (!bus) return -ENODEV; return ssb_attr_sprom_show(bus, buf, ssb_pcmcia_sprom_read_all); } static ssize_t ssb_pcmcia_attr_sprom_store(struct device *pcmciadev, struct device_attribute *attr, const char *buf, size_t count) { struct pcmcia_device *pdev = container_of(pcmciadev, struct pcmcia_device, dev); struct ssb_bus *bus; bus = ssb_pcmcia_dev_to_bus(pdev); if (!bus) return -ENODEV; return ssb_attr_sprom_store(bus, buf, count, ssb_pcmcia_sprom_check_crc, ssb_pcmcia_sprom_write_all); } static DEVICE_ATTR(ssb_sprom, 0600, ssb_pcmcia_attr_sprom_show, ssb_pcmcia_attr_sprom_store); static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor) { u8 val; int err; err = ssb_pcmcia_cfg_read(bus, cor, &val); if (err) return err; val &= ~COR_SOFT_RESET; val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ; err = ssb_pcmcia_cfg_write(bus, cor, val); if (err) return err; msleep(40); return 0; } /* Initialize the PCMCIA hardware. This is called on Init and Resume. */ int ssb_pcmcia_hardware_setup(struct ssb_bus *bus) { int err; if (bus->bustype != SSB_BUSTYPE_PCMCIA) return 0; /* Switch segment to a known state and sync * bus->mapped_pcmcia_seg with hardware state. */ ssb_pcmcia_switch_segment(bus, 0); /* Init the COR register. */ err = ssb_pcmcia_cor_setup(bus, CISREG_COR); if (err) return err; /* Some cards also need this register to get poked. */ err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80); if (err) return err; return 0; } void ssb_pcmcia_exit(struct ssb_bus *bus) { if (bus->bustype != SSB_BUSTYPE_PCMCIA) return; device_remove_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom); } int ssb_pcmcia_init(struct ssb_bus *bus) { int err; if (bus->bustype != SSB_BUSTYPE_PCMCIA) return 0; err = ssb_pcmcia_hardware_setup(bus); if (err) goto error; bus->sprom_size = SSB_PCMCIA_SPROM_SIZE; mutex_init(&bus->sprom_mutex); err = device_create_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom); if (err) goto error; return 0; error: ssb_err("Failed to initialize PCMCIA host device\n"); return err; } |