1 /* 2 * Copyright 2005-2006 Erik Waling 3 * Copyright 2006 Stephane Marchesin 4 * Copyright 2007-2009 Stuart Bennett 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 21 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #include <subdev/bios.h> 26 27 #include <drm/drmP.h> 28 29 #include "nouveau_drm.h" 30 #include "nouveau_reg.h" 31 #include "nouveau_hw.h" 32 #include "nouveau_encoder.h" 33 34 #include <linux/io-mapping.h> 35 #include <linux/firmware.h> 36 37 /* these defines are made up */ 38 #define NV_CIO_CRE_44_HEADA 0x0 39 #define NV_CIO_CRE_44_HEADB 0x3 40 #define FEATURE_MOBILE 0x10 /* also FEATURE_QUADRO for BMP */ 41 42 #define EDID1_LEN 128 43 44 #define BIOSLOG(sip, fmt, arg...) NV_DEBUG(sip->dev, fmt, ##arg) 45 #define LOG_OLD_VALUE(x) 46 47 struct init_exec { 48 bool execute; 49 bool repeat; 50 }; 51 52 static bool nv_cksum(const uint8_t *data, unsigned int length) 53 { 54 /* 55 * There's a few checksums in the BIOS, so here's a generic checking 56 * function. 57 */ 58 int i; 59 uint8_t sum = 0; 60 61 for (i = 0; i < length; i++) 62 sum += data[i]; 63 64 if (sum) 65 return true; 66 67 return false; 68 } 69 70 static uint16_t clkcmptable(struct nvbios *bios, uint16_t clktable, int pxclk) 71 { 72 int compare_record_len, i = 0; 73 uint16_t compareclk, scriptptr = 0; 74 75 if (bios->major_version < 5) /* pre BIT */ 76 compare_record_len = 3; 77 else 78 compare_record_len = 4; 79 80 do { 81 compareclk = ROM16(bios->data[clktable + compare_record_len * i]); 82 if (pxclk >= compareclk * 10) { 83 if (bios->major_version < 5) { 84 uint8_t tmdssub = bios->data[clktable + 2 + compare_record_len * i]; 85 scriptptr = ROM16(bios->data[bios->init_script_tbls_ptr + tmdssub * 2]); 86 } else 87 scriptptr = ROM16(bios->data[clktable + 2 + compare_record_len * i]); 88 break; 89 } 90 i++; 91 } while (compareclk); 92 93 return scriptptr; 94 } 95 96 static void 97 run_digital_op_script(struct drm_device *dev, uint16_t scriptptr, 98 struct dcb_output *dcbent, int head, bool dl) 99 { 100 struct nouveau_drm *drm = nouveau_drm(dev); 101 102 NV_INFO(drm, "0x%04X: Parsing digital output script table\n", 103 scriptptr); 104 NVWriteVgaCrtc(dev, 0, NV_CIO_CRE_44, head ? NV_CIO_CRE_44_HEADB : 105 NV_CIO_CRE_44_HEADA); 106 nouveau_bios_run_init_table(dev, scriptptr, dcbent, head); 107 108 nv04_dfp_bind_head(dev, dcbent, head, dl); 109 } 110 111 static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script) 112 { 113 struct nouveau_drm *drm = nouveau_drm(dev); 114 struct nvbios *bios = &drm->vbios; 115 uint8_t sub = bios->data[bios->fp.xlated_entry + script] + (bios->fp.link_c_increment && dcbent->or & DCB_OUTPUT_C ? 1 : 0); 116 uint16_t scriptofs = ROM16(bios->data[bios->init_script_tbls_ptr + sub * 2]); 117 118 if (!bios->fp.xlated_entry || !sub || !scriptofs) 119 return -EINVAL; 120 121 run_digital_op_script(dev, scriptofs, dcbent, head, bios->fp.dual_link); 122 123 if (script == LVDS_PANEL_OFF) { 124 /* off-on delay in ms */ 125 mdelay(ROM16(bios->data[bios->fp.xlated_entry + 7])); 126 } 127 #ifdef __powerpc__ 128 /* Powerbook specific quirks */ 129 if (script == LVDS_RESET && 130 (dev->pci_device == 0x0179 || dev->pci_device == 0x0189 || 131 dev->pci_device == 0x0329)) 132 nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72); 133 #endif 134 135 return 0; 136 } 137 138 static int run_lvds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk) 139 { 140 /* 141 * The BIT LVDS table's header has the information to setup the 142 * necessary registers. Following the standard 4 byte header are: 143 * A bitmask byte and a dual-link transition pxclk value for use in 144 * selecting the init script when not using straps; 4 script pointers 145 * for panel power, selected by output and on/off; and 8 table pointers 146 * for panel init, the needed one determined by output, and bits in the 147 * conf byte. These tables are similar to the TMDS tables, consisting 148 * of a list of pxclks and script pointers. 149 */ 150 struct nouveau_drm *drm = nouveau_drm(dev); 151 struct nvbios *bios = &drm->vbios; 152 unsigned int outputset = (dcbent->or == 4) ? 1 : 0; 153 uint16_t scriptptr = 0, clktable; 154 155 /* 156 * For now we assume version 3.0 table - g80 support will need some 157 * changes 158 */ 159 160 switch (script) { 161 case LVDS_INIT: 162 return -ENOSYS; 163 case LVDS_BACKLIGHT_ON: 164 case LVDS_PANEL_ON: 165 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 7 + outputset * 2]); 166 break; 167 case LVDS_BACKLIGHT_OFF: 168 case LVDS_PANEL_OFF: 169 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 11 + outputset * 2]); 170 break; 171 case LVDS_RESET: 172 clktable = bios->fp.lvdsmanufacturerpointer + 15; 173 if (dcbent->or == 4) 174 clktable += 8; 175 176 if (dcbent->lvdsconf.use_straps_for_mode) { 177 if (bios->fp.dual_link) 178 clktable += 4; 179 if (bios->fp.if_is_24bit) 180 clktable += 2; 181 } else { 182 /* using EDID */ 183 int cmpval_24bit = (dcbent->or == 4) ? 4 : 1; 184 185 if (bios->fp.dual_link) { 186 clktable += 4; 187 cmpval_24bit <<= 1; 188 } 189 190 if (bios->fp.strapless_is_24bit & cmpval_24bit) 191 clktable += 2; 192 } 193 194 clktable = ROM16(bios->data[clktable]); 195 if (!clktable) { 196 NV_ERROR(drm, "Pixel clock comparison table not found\n"); 197 return -ENOENT; 198 } 199 scriptptr = clkcmptable(bios, clktable, pxclk); 200 } 201 202 if (!scriptptr) { 203 NV_ERROR(drm, "LVDS output init script not found\n"); 204 return -ENOENT; 205 } 206 run_digital_op_script(dev, scriptptr, dcbent, head, bios->fp.dual_link); 207 208 return 0; 209 } 210 211 int call_lvds_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk) 212 { 213 /* 214 * LVDS operations are multiplexed in an effort to present a single API 215 * which works with two vastly differing underlying structures. 216 * This acts as the demux 217 */ 218 219 struct nouveau_drm *drm = nouveau_drm(dev); 220 struct nouveau_device *device = nv_device(drm->device); 221 struct nvbios *bios = &drm->vbios; 222 uint8_t lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer]; 223 uint32_t sel_clk_binding, sel_clk; 224 int ret; 225 226 if (bios->fp.last_script_invoc == (script << 1 | head) || !lvds_ver || 227 (lvds_ver >= 0x30 && script == LVDS_INIT)) 228 return 0; 229 230 if (!bios->fp.lvds_init_run) { 231 bios->fp.lvds_init_run = true; 232 call_lvds_script(dev, dcbent, head, LVDS_INIT, pxclk); 233 } 234 235 if (script == LVDS_PANEL_ON && bios->fp.reset_after_pclk_change) 236 call_lvds_script(dev, dcbent, head, LVDS_RESET, pxclk); 237 if (script == LVDS_RESET && bios->fp.power_off_for_reset) 238 call_lvds_script(dev, dcbent, head, LVDS_PANEL_OFF, pxclk); 239 240 NV_INFO(drm, "Calling LVDS script %d:\n", script); 241 242 /* don't let script change pll->head binding */ 243 sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000; 244 245 if (lvds_ver < 0x30) 246 ret = call_lvds_manufacturer_script(dev, dcbent, head, script); 247 else 248 ret = run_lvds_table(dev, dcbent, head, script, pxclk); 249 250 bios->fp.last_script_invoc = (script << 1 | head); 251 252 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000; 253 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding); 254 /* some scripts set a value in NV_PBUS_POWERCTRL_2 and break video overlay */ 255 nv_wr32(device, NV_PBUS_POWERCTRL_2, 0); 256 257 return ret; 258 } 259 260 struct lvdstableheader { 261 uint8_t lvds_ver, headerlen, recordlen; 262 }; 263 264 static int parse_lvds_manufacturer_table_header(struct drm_device *dev, struct nvbios *bios, struct lvdstableheader *lth) 265 { 266 /* 267 * BMP version (0xa) LVDS table has a simple header of version and 268 * record length. The BIT LVDS table has the typical BIT table header: 269 * version byte, header length byte, record length byte, and a byte for 270 * the maximum number of records that can be held in the table. 271 */ 272 273 struct nouveau_drm *drm = nouveau_drm(dev); 274 uint8_t lvds_ver, headerlen, recordlen; 275 276 memset(lth, 0, sizeof(struct lvdstableheader)); 277 278 if (bios->fp.lvdsmanufacturerpointer == 0x0) { 279 NV_ERROR(drm, "Pointer to LVDS manufacturer table invalid\n"); 280 return -EINVAL; 281 } 282 283 lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer]; 284 285 switch (lvds_ver) { 286 case 0x0a: /* pre NV40 */ 287 headerlen = 2; 288 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 289 break; 290 case 0x30: /* NV4x */ 291 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 292 if (headerlen < 0x1f) { 293 NV_ERROR(drm, "LVDS table header not understood\n"); 294 return -EINVAL; 295 } 296 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2]; 297 break; 298 case 0x40: /* G80/G90 */ 299 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 300 if (headerlen < 0x7) { 301 NV_ERROR(drm, "LVDS table header not understood\n"); 302 return -EINVAL; 303 } 304 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2]; 305 break; 306 default: 307 NV_ERROR(drm, 308 "LVDS table revision %d.%d not currently supported\n", 309 lvds_ver >> 4, lvds_ver & 0xf); 310 return -ENOSYS; 311 } 312 313 lth->lvds_ver = lvds_ver; 314 lth->headerlen = headerlen; 315 lth->recordlen = recordlen; 316 317 return 0; 318 } 319 320 static int 321 get_fp_strap(struct drm_device *dev, struct nvbios *bios) 322 { 323 struct nouveau_device *device = nouveau_dev(dev); 324 325 /* 326 * The fp strap is normally dictated by the "User Strap" in 327 * PEXTDEV_BOOT_0[20:16], but on BMP cards when bit 2 of the 328 * Internal_Flags struct at 0x48 is set, the user strap gets overriden 329 * by the PCI subsystem ID during POST, but not before the previous user 330 * strap has been committed to CR58 for CR57=0xf on head A, which may be 331 * read and used instead 332 */ 333 334 if (bios->major_version < 5 && bios->data[0x48] & 0x4) 335 return NVReadVgaCrtc5758(dev, 0, 0xf) & 0xf; 336 337 if (device->card_type >= NV_50) 338 return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf; 339 else 340 return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf; 341 } 342 343 static int parse_fp_mode_table(struct drm_device *dev, struct nvbios *bios) 344 { 345 struct nouveau_drm *drm = nouveau_drm(dev); 346 uint8_t *fptable; 347 uint8_t fptable_ver, headerlen = 0, recordlen, fpentries = 0xf, fpindex; 348 int ret, ofs, fpstrapping; 349 struct lvdstableheader lth; 350 351 if (bios->fp.fptablepointer == 0x0) { 352 /* Apple cards don't have the fp table; the laptops use DDC */ 353 /* The table is also missing on some x86 IGPs */ 354 #ifndef __powerpc__ 355 NV_ERROR(drm, "Pointer to flat panel table invalid\n"); 356 #endif 357 bios->digital_min_front_porch = 0x4b; 358 return 0; 359 } 360 361 fptable = &bios->data[bios->fp.fptablepointer]; 362 fptable_ver = fptable[0]; 363 364 switch (fptable_ver) { 365 /* 366 * BMP version 0x5.0x11 BIOSen have version 1 like tables, but no 367 * version field, and miss one of the spread spectrum/PWM bytes. 368 * This could affect early GF2Go parts (not seen any appropriate ROMs 369 * though). Here we assume that a version of 0x05 matches this case 370 * (combining with a BMP version check would be better), as the 371 * common case for the panel type field is 0x0005, and that is in 372 * fact what we are reading the first byte of. 373 */ 374 case 0x05: /* some NV10, 11, 15, 16 */ 375 recordlen = 42; 376 ofs = -1; 377 break; 378 case 0x10: /* some NV15/16, and NV11+ */ 379 recordlen = 44; 380 ofs = 0; 381 break; 382 case 0x20: /* NV40+ */ 383 headerlen = fptable[1]; 384 recordlen = fptable[2]; 385 fpentries = fptable[3]; 386 /* 387 * fptable[4] is the minimum 388 * RAMDAC_FP_HCRTC -> RAMDAC_FP_HSYNC_START gap 389 */ 390 bios->digital_min_front_porch = fptable[4]; 391 ofs = -7; 392 break; 393 default: 394 NV_ERROR(drm, 395 "FP table revision %d.%d not currently supported\n", 396 fptable_ver >> 4, fptable_ver & 0xf); 397 return -ENOSYS; 398 } 399 400 if (!bios->is_mobile) /* !mobile only needs digital_min_front_porch */ 401 return 0; 402 403 ret = parse_lvds_manufacturer_table_header(dev, bios, <h); 404 if (ret) 405 return ret; 406 407 if (lth.lvds_ver == 0x30 || lth.lvds_ver == 0x40) { 408 bios->fp.fpxlatetableptr = bios->fp.lvdsmanufacturerpointer + 409 lth.headerlen + 1; 410 bios->fp.xlatwidth = lth.recordlen; 411 } 412 if (bios->fp.fpxlatetableptr == 0x0) { 413 NV_ERROR(drm, "Pointer to flat panel xlat table invalid\n"); 414 return -EINVAL; 415 } 416 417 fpstrapping = get_fp_strap(dev, bios); 418 419 fpindex = bios->data[bios->fp.fpxlatetableptr + 420 fpstrapping * bios->fp.xlatwidth]; 421 422 if (fpindex > fpentries) { 423 NV_ERROR(drm, "Bad flat panel table index\n"); 424 return -ENOENT; 425 } 426 427 /* nv4x cards need both a strap value and fpindex of 0xf to use DDC */ 428 if (lth.lvds_ver > 0x10) 429 bios->fp_no_ddc = fpstrapping != 0xf || fpindex != 0xf; 430 431 /* 432 * If either the strap or xlated fpindex value are 0xf there is no 433 * panel using a strap-derived bios mode present. this condition 434 * includes, but is different from, the DDC panel indicator above 435 */ 436 if (fpstrapping == 0xf || fpindex == 0xf) 437 return 0; 438 439 bios->fp.mode_ptr = bios->fp.fptablepointer + headerlen + 440 recordlen * fpindex + ofs; 441 442 NV_INFO(drm, "BIOS FP mode: %dx%d (%dkHz pixel clock)\n", 443 ROM16(bios->data[bios->fp.mode_ptr + 11]) + 1, 444 ROM16(bios->data[bios->fp.mode_ptr + 25]) + 1, 445 ROM16(bios->data[bios->fp.mode_ptr + 7]) * 10); 446 447 return 0; 448 } 449 450 bool nouveau_bios_fp_mode(struct drm_device *dev, struct drm_display_mode *mode) 451 { 452 struct nouveau_drm *drm = nouveau_drm(dev); 453 struct nvbios *bios = &drm->vbios; 454 uint8_t *mode_entry = &bios->data[bios->fp.mode_ptr]; 455 456 if (!mode) /* just checking whether we can produce a mode */ 457 return bios->fp.mode_ptr; 458 459 memset(mode, 0, sizeof(struct drm_display_mode)); 460 /* 461 * For version 1.0 (version in byte 0): 462 * bytes 1-2 are "panel type", including bits on whether Colour/mono, 463 * single/dual link, and type (TFT etc.) 464 * bytes 3-6 are bits per colour in RGBX 465 */ 466 mode->clock = ROM16(mode_entry[7]) * 10; 467 /* bytes 9-10 is HActive */ 468 mode->hdisplay = ROM16(mode_entry[11]) + 1; 469 /* 470 * bytes 13-14 is HValid Start 471 * bytes 15-16 is HValid End 472 */ 473 mode->hsync_start = ROM16(mode_entry[17]) + 1; 474 mode->hsync_end = ROM16(mode_entry[19]) + 1; 475 mode->htotal = ROM16(mode_entry[21]) + 1; 476 /* bytes 23-24, 27-30 similarly, but vertical */ 477 mode->vdisplay = ROM16(mode_entry[25]) + 1; 478 mode->vsync_start = ROM16(mode_entry[31]) + 1; 479 mode->vsync_end = ROM16(mode_entry[33]) + 1; 480 mode->vtotal = ROM16(mode_entry[35]) + 1; 481 mode->flags |= (mode_entry[37] & 0x10) ? 482 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC; 483 mode->flags |= (mode_entry[37] & 0x1) ? 484 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC; 485 /* 486 * bytes 38-39 relate to spread spectrum settings 487 * bytes 40-43 are something to do with PWM 488 */ 489 490 mode->status = MODE_OK; 491 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 492 drm_mode_set_name(mode); 493 return bios->fp.mode_ptr; 494 } 495 496 int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, bool *if_is_24bit) 497 { 498 /* 499 * The LVDS table header is (mostly) described in 500 * parse_lvds_manufacturer_table_header(): the BIT header additionally 501 * contains the dual-link transition pxclk (in 10s kHz), at byte 5 - if 502 * straps are not being used for the panel, this specifies the frequency 503 * at which modes should be set up in the dual link style. 504 * 505 * Following the header, the BMP (ver 0xa) table has several records, 506 * indexed by a separate xlat table, indexed in turn by the fp strap in 507 * EXTDEV_BOOT. Each record had a config byte, followed by 6 script 508 * numbers for use by INIT_SUB which controlled panel init and power, 509 * and finally a dword of ms to sleep between power off and on 510 * operations. 511 * 512 * In the BIT versions, the table following the header serves as an 513 * integrated config and xlat table: the records in the table are 514 * indexed by the FP strap nibble in EXTDEV_BOOT, and each record has 515 * two bytes - the first as a config byte, the second for indexing the 516 * fp mode table pointed to by the BIT 'D' table 517 * 518 * DDC is not used until after card init, so selecting the correct table 519 * entry and setting the dual link flag for EDID equipped panels, 520 * requiring tests against the native-mode pixel clock, cannot be done 521 * until later, when this function should be called with non-zero pxclk 522 */ 523 struct nouveau_drm *drm = nouveau_drm(dev); 524 struct nvbios *bios = &drm->vbios; 525 int fpstrapping = get_fp_strap(dev, bios), lvdsmanufacturerindex = 0; 526 struct lvdstableheader lth; 527 uint16_t lvdsofs; 528 int ret, chip_version = bios->chip_version; 529 530 ret = parse_lvds_manufacturer_table_header(dev, bios, <h); 531 if (ret) 532 return ret; 533 534 switch (lth.lvds_ver) { 535 case 0x0a: /* pre NV40 */ 536 lvdsmanufacturerindex = bios->data[ 537 bios->fp.fpxlatemanufacturertableptr + 538 fpstrapping]; 539 540 /* we're done if this isn't the EDID panel case */ 541 if (!pxclk) 542 break; 543 544 if (chip_version < 0x25) { 545 /* nv17 behaviour 546 * 547 * It seems the old style lvds script pointer is reused 548 * to select 18/24 bit colour depth for EDID panels. 549 */ 550 lvdsmanufacturerindex = 551 (bios->legacy.lvds_single_a_script_ptr & 1) ? 552 2 : 0; 553 if (pxclk >= bios->fp.duallink_transition_clk) 554 lvdsmanufacturerindex++; 555 } else if (chip_version < 0x30) { 556 /* nv28 behaviour (off-chip encoder) 557 * 558 * nv28 does a complex dance of first using byte 121 of 559 * the EDID to choose the lvdsmanufacturerindex, then 560 * later attempting to match the EDID manufacturer and 561 * product IDs in a table (signature 'pidt' (panel id 562 * table?)), setting an lvdsmanufacturerindex of 0 and 563 * an fp strap of the match index (or 0xf if none) 564 */ 565 lvdsmanufacturerindex = 0; 566 } else { 567 /* nv31, nv34 behaviour */ 568 lvdsmanufacturerindex = 0; 569 if (pxclk >= bios->fp.duallink_transition_clk) 570 lvdsmanufacturerindex = 2; 571 if (pxclk >= 140000) 572 lvdsmanufacturerindex = 3; 573 } 574 575 /* 576 * nvidia set the high nibble of (cr57=f, cr58) to 577 * lvdsmanufacturerindex in this case; we don't 578 */ 579 break; 580 case 0x30: /* NV4x */ 581 case 0x40: /* G80/G90 */ 582 lvdsmanufacturerindex = fpstrapping; 583 break; 584 default: 585 NV_ERROR(drm, "LVDS table revision not currently supported\n"); 586 return -ENOSYS; 587 } 588 589 lvdsofs = bios->fp.xlated_entry = bios->fp.lvdsmanufacturerpointer + lth.headerlen + lth.recordlen * lvdsmanufacturerindex; 590 switch (lth.lvds_ver) { 591 case 0x0a: 592 bios->fp.power_off_for_reset = bios->data[lvdsofs] & 1; 593 bios->fp.reset_after_pclk_change = bios->data[lvdsofs] & 2; 594 bios->fp.dual_link = bios->data[lvdsofs] & 4; 595 bios->fp.link_c_increment = bios->data[lvdsofs] & 8; 596 *if_is_24bit = bios->data[lvdsofs] & 16; 597 break; 598 case 0x30: 599 case 0x40: 600 /* 601 * No sign of the "power off for reset" or "reset for panel 602 * on" bits, but it's safer to assume we should 603 */ 604 bios->fp.power_off_for_reset = true; 605 bios->fp.reset_after_pclk_change = true; 606 607 /* 608 * It's ok lvdsofs is wrong for nv4x edid case; dual_link is 609 * over-written, and if_is_24bit isn't used 610 */ 611 bios->fp.dual_link = bios->data[lvdsofs] & 1; 612 bios->fp.if_is_24bit = bios->data[lvdsofs] & 2; 613 bios->fp.strapless_is_24bit = bios->data[bios->fp.lvdsmanufacturerpointer + 4]; 614 bios->fp.duallink_transition_clk = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 5]) * 10; 615 break; 616 } 617 618 /* set dual_link flag for EDID case */ 619 if (pxclk && (chip_version < 0x25 || chip_version > 0x28)) 620 bios->fp.dual_link = (pxclk >= bios->fp.duallink_transition_clk); 621 622 *dl = bios->fp.dual_link; 623 624 return 0; 625 } 626 627 int run_tmds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, int pxclk) 628 { 629 /* 630 * the pxclk parameter is in kHz 631 * 632 * This runs the TMDS regs setting code found on BIT bios cards 633 * 634 * For ffs(or) == 1 use the first table, for ffs(or) == 2 and 635 * ffs(or) == 3, use the second. 636 */ 637 638 struct nouveau_drm *drm = nouveau_drm(dev); 639 struct nouveau_device *device = nv_device(drm->device); 640 struct nvbios *bios = &drm->vbios; 641 int cv = bios->chip_version; 642 uint16_t clktable = 0, scriptptr; 643 uint32_t sel_clk_binding, sel_clk; 644 645 /* pre-nv17 off-chip tmds uses scripts, post nv17 doesn't */ 646 if (cv >= 0x17 && cv != 0x1a && cv != 0x20 && 647 dcbent->location != DCB_LOC_ON_CHIP) 648 return 0; 649 650 switch (ffs(dcbent->or)) { 651 case 1: 652 clktable = bios->tmds.output0_script_ptr; 653 break; 654 case 2: 655 case 3: 656 clktable = bios->tmds.output1_script_ptr; 657 break; 658 } 659 660 if (!clktable) { 661 NV_ERROR(drm, "Pixel clock comparison table not found\n"); 662 return -EINVAL; 663 } 664 665 scriptptr = clkcmptable(bios, clktable, pxclk); 666 667 if (!scriptptr) { 668 NV_ERROR(drm, "TMDS output init script not found\n"); 669 return -ENOENT; 670 } 671 672 /* don't let script change pll->head binding */ 673 sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000; 674 run_digital_op_script(dev, scriptptr, dcbent, head, pxclk >= 165000); 675 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000; 676 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding); 677 678 return 0; 679 } 680 681 static void parse_bios_version(struct drm_device *dev, struct nvbios *bios, uint16_t offset) 682 { 683 /* 684 * offset + 0 (8 bits): Micro version 685 * offset + 1 (8 bits): Minor version 686 * offset + 2 (8 bits): Chip version 687 * offset + 3 (8 bits): Major version 688 */ 689 struct nouveau_drm *drm = nouveau_drm(dev); 690 691 bios->major_version = bios->data[offset + 3]; 692 bios->chip_version = bios->data[offset + 2]; 693 NV_INFO(drm, "Bios version %02x.%02x.%02x.%02x\n", 694 bios->data[offset + 3], bios->data[offset + 2], 695 bios->data[offset + 1], bios->data[offset]); 696 } 697 698 static void parse_script_table_pointers(struct nvbios *bios, uint16_t offset) 699 { 700 /* 701 * Parses the init table segment for pointers used in script execution. 702 * 703 * offset + 0 (16 bits): init script tables pointer 704 * offset + 2 (16 bits): macro index table pointer 705 * offset + 4 (16 bits): macro table pointer 706 * offset + 6 (16 bits): condition table pointer 707 * offset + 8 (16 bits): io condition table pointer 708 * offset + 10 (16 bits): io flag condition table pointer 709 * offset + 12 (16 bits): init function table pointer 710 */ 711 712 bios->init_script_tbls_ptr = ROM16(bios->data[offset]); 713 bios->macro_index_tbl_ptr = ROM16(bios->data[offset + 2]); 714 bios->macro_tbl_ptr = ROM16(bios->data[offset + 4]); 715 bios->condition_tbl_ptr = ROM16(bios->data[offset + 6]); 716 bios->io_condition_tbl_ptr = ROM16(bios->data[offset + 8]); 717 bios->io_flag_condition_tbl_ptr = ROM16(bios->data[offset + 10]); 718 bios->init_function_tbl_ptr = ROM16(bios->data[offset + 12]); 719 } 720 721 static int parse_bit_A_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 722 { 723 /* 724 * Parses the load detect values for g80 cards. 725 * 726 * offset + 0 (16 bits): loadval table pointer 727 */ 728 729 struct nouveau_drm *drm = nouveau_drm(dev); 730 uint16_t load_table_ptr; 731 uint8_t version, headerlen, entrylen, num_entries; 732 733 if (bitentry->length != 3) { 734 NV_ERROR(drm, "Do not understand BIT A table\n"); 735 return -EINVAL; 736 } 737 738 load_table_ptr = ROM16(bios->data[bitentry->offset]); 739 740 if (load_table_ptr == 0x0) { 741 NV_DEBUG(drm, "Pointer to BIT loadval table invalid\n"); 742 return -EINVAL; 743 } 744 745 version = bios->data[load_table_ptr]; 746 747 if (version != 0x10) { 748 NV_ERROR(drm, "BIT loadval table version %d.%d not supported\n", 749 version >> 4, version & 0xF); 750 return -ENOSYS; 751 } 752 753 headerlen = bios->data[load_table_ptr + 1]; 754 entrylen = bios->data[load_table_ptr + 2]; 755 num_entries = bios->data[load_table_ptr + 3]; 756 757 if (headerlen != 4 || entrylen != 4 || num_entries != 2) { 758 NV_ERROR(drm, "Do not understand BIT loadval table\n"); 759 return -EINVAL; 760 } 761 762 /* First entry is normal dac, 2nd tv-out perhaps? */ 763 bios->dactestval = ROM32(bios->data[load_table_ptr + headerlen]) & 0x3ff; 764 765 return 0; 766 } 767 768 static int parse_bit_C_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 769 { 770 /* 771 * offset + 8 (16 bits): PLL limits table pointer 772 * 773 * There's more in here, but that's unknown. 774 */ 775 struct nouveau_drm *drm = nouveau_drm(dev); 776 777 if (bitentry->length < 10) { 778 NV_ERROR(drm, "Do not understand BIT C table\n"); 779 return -EINVAL; 780 } 781 782 bios->pll_limit_tbl_ptr = ROM16(bios->data[bitentry->offset + 8]); 783 784 return 0; 785 } 786 787 static int parse_bit_display_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 788 { 789 /* 790 * Parses the flat panel table segment that the bit entry points to. 791 * Starting at bitentry->offset: 792 * 793 * offset + 0 (16 bits): ??? table pointer - seems to have 18 byte 794 * records beginning with a freq. 795 * offset + 2 (16 bits): mode table pointer 796 */ 797 struct nouveau_drm *drm = nouveau_drm(dev); 798 799 if (bitentry->length != 4) { 800 NV_ERROR(drm, "Do not understand BIT display table\n"); 801 return -EINVAL; 802 } 803 804 bios->fp.fptablepointer = ROM16(bios->data[bitentry->offset + 2]); 805 806 return 0; 807 } 808 809 static int parse_bit_init_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 810 { 811 /* 812 * Parses the init table segment that the bit entry points to. 813 * 814 * See parse_script_table_pointers for layout 815 */ 816 struct nouveau_drm *drm = nouveau_drm(dev); 817 818 if (bitentry->length < 14) { 819 NV_ERROR(drm, "Do not understand init table\n"); 820 return -EINVAL; 821 } 822 823 parse_script_table_pointers(bios, bitentry->offset); 824 825 if (bitentry->length >= 16) 826 bios->some_script_ptr = ROM16(bios->data[bitentry->offset + 14]); 827 if (bitentry->length >= 18) 828 bios->init96_tbl_ptr = ROM16(bios->data[bitentry->offset + 16]); 829 830 return 0; 831 } 832 833 static int parse_bit_i_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 834 { 835 /* 836 * BIT 'i' (info?) table 837 * 838 * offset + 0 (32 bits): BIOS version dword (as in B table) 839 * offset + 5 (8 bits): BIOS feature byte (same as for BMP?) 840 * offset + 13 (16 bits): pointer to table containing DAC load 841 * detection comparison values 842 * 843 * There's other things in the table, purpose unknown 844 */ 845 846 struct nouveau_drm *drm = nouveau_drm(dev); 847 uint16_t daccmpoffset; 848 uint8_t dacver, dacheaderlen; 849 850 if (bitentry->length < 6) { 851 NV_ERROR(drm, "BIT i table too short for needed information\n"); 852 return -EINVAL; 853 } 854 855 parse_bios_version(dev, bios, bitentry->offset); 856 857 /* 858 * bit 4 seems to indicate a mobile bios (doesn't suffer from BMP's 859 * Quadro identity crisis), other bits possibly as for BMP feature byte 860 */ 861 bios->feature_byte = bios->data[bitentry->offset + 5]; 862 bios->is_mobile = bios->feature_byte & FEATURE_MOBILE; 863 864 if (bitentry->length < 15) { 865 NV_WARN(drm, "BIT i table not long enough for DAC load " 866 "detection comparison table\n"); 867 return -EINVAL; 868 } 869 870 daccmpoffset = ROM16(bios->data[bitentry->offset + 13]); 871 872 /* doesn't exist on g80 */ 873 if (!daccmpoffset) 874 return 0; 875 876 /* 877 * The first value in the table, following the header, is the 878 * comparison value, the second entry is a comparison value for 879 * TV load detection. 880 */ 881 882 dacver = bios->data[daccmpoffset]; 883 dacheaderlen = bios->data[daccmpoffset + 1]; 884 885 if (dacver != 0x00 && dacver != 0x10) { 886 NV_WARN(drm, "DAC load detection comparison table version " 887 "%d.%d not known\n", dacver >> 4, dacver & 0xf); 888 return -ENOSYS; 889 } 890 891 bios->dactestval = ROM32(bios->data[daccmpoffset + dacheaderlen]); 892 bios->tvdactestval = ROM32(bios->data[daccmpoffset + dacheaderlen + 4]); 893 894 return 0; 895 } 896 897 static int parse_bit_lvds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 898 { 899 /* 900 * Parses the LVDS table segment that the bit entry points to. 901 * Starting at bitentry->offset: 902 * 903 * offset + 0 (16 bits): LVDS strap xlate table pointer 904 */ 905 906 struct nouveau_drm *drm = nouveau_drm(dev); 907 908 if (bitentry->length != 2) { 909 NV_ERROR(drm, "Do not understand BIT LVDS table\n"); 910 return -EINVAL; 911 } 912 913 /* 914 * No idea if it's still called the LVDS manufacturer table, but 915 * the concept's close enough. 916 */ 917 bios->fp.lvdsmanufacturerpointer = ROM16(bios->data[bitentry->offset]); 918 919 return 0; 920 } 921 922 static int 923 parse_bit_M_tbl_entry(struct drm_device *dev, struct nvbios *bios, 924 struct bit_entry *bitentry) 925 { 926 /* 927 * offset + 2 (8 bits): number of options in an 928 * INIT_RAM_RESTRICT_ZM_REG_GROUP opcode option set 929 * offset + 3 (16 bits): pointer to strap xlate table for RAM 930 * restrict option selection 931 * 932 * There's a bunch of bits in this table other than the RAM restrict 933 * stuff that we don't use - their use currently unknown 934 */ 935 936 /* 937 * Older bios versions don't have a sufficiently long table for 938 * what we want 939 */ 940 if (bitentry->length < 0x5) 941 return 0; 942 943 if (bitentry->version < 2) { 944 bios->ram_restrict_group_count = bios->data[bitentry->offset + 2]; 945 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 3]); 946 } else { 947 bios->ram_restrict_group_count = bios->data[bitentry->offset + 0]; 948 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 1]); 949 } 950 951 return 0; 952 } 953 954 static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 955 { 956 /* 957 * Parses the pointer to the TMDS table 958 * 959 * Starting at bitentry->offset: 960 * 961 * offset + 0 (16 bits): TMDS table pointer 962 * 963 * The TMDS table is typically found just before the DCB table, with a 964 * characteristic signature of 0x11,0x13 (1.1 being version, 0x13 being 965 * length?) 966 * 967 * At offset +7 is a pointer to a script, which I don't know how to 968 * run yet. 969 * At offset +9 is a pointer to another script, likewise 970 * Offset +11 has a pointer to a table where the first word is a pxclk 971 * frequency and the second word a pointer to a script, which should be 972 * run if the comparison pxclk frequency is less than the pxclk desired. 973 * This repeats for decreasing comparison frequencies 974 * Offset +13 has a pointer to a similar table 975 * The selection of table (and possibly +7/+9 script) is dictated by 976 * "or" from the DCB. 977 */ 978 979 struct nouveau_drm *drm = nouveau_drm(dev); 980 uint16_t tmdstableptr, script1, script2; 981 982 if (bitentry->length != 2) { 983 NV_ERROR(drm, "Do not understand BIT TMDS table\n"); 984 return -EINVAL; 985 } 986 987 tmdstableptr = ROM16(bios->data[bitentry->offset]); 988 if (!tmdstableptr) { 989 NV_ERROR(drm, "Pointer to TMDS table invalid\n"); 990 return -EINVAL; 991 } 992 993 NV_INFO(drm, "TMDS table version %d.%d\n", 994 bios->data[tmdstableptr] >> 4, bios->data[tmdstableptr] & 0xf); 995 996 /* nv50+ has v2.0, but we don't parse it atm */ 997 if (bios->data[tmdstableptr] != 0x11) 998 return -ENOSYS; 999 1000 /* 1001 * These two scripts are odd: they don't seem to get run even when 1002 * they are not stubbed. 1003 */ 1004 script1 = ROM16(bios->data[tmdstableptr + 7]); 1005 script2 = ROM16(bios->data[tmdstableptr + 9]); 1006 if (bios->data[script1] != 'q' || bios->data[script2] != 'q') 1007 NV_WARN(drm, "TMDS table script pointers not stubbed\n"); 1008 1009 bios->tmds.output0_script_ptr = ROM16(bios->data[tmdstableptr + 11]); 1010 bios->tmds.output1_script_ptr = ROM16(bios->data[tmdstableptr + 13]); 1011 1012 return 0; 1013 } 1014 1015 struct bit_table { 1016 const char id; 1017 int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *); 1018 }; 1019 1020 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry }) 1021 1022 int 1023 bit_table(struct drm_device *dev, u8 id, struct bit_entry *bit) 1024 { 1025 struct nouveau_drm *drm = nouveau_drm(dev); 1026 struct nvbios *bios = &drm->vbios; 1027 u8 entries, *entry; 1028 1029 if (bios->type != NVBIOS_BIT) 1030 return -ENODEV; 1031 1032 entries = bios->data[bios->offset + 10]; 1033 entry = &bios->data[bios->offset + 12]; 1034 while (entries--) { 1035 if (entry[0] == id) { 1036 bit->id = entry[0]; 1037 bit->version = entry[1]; 1038 bit->length = ROM16(entry[2]); 1039 bit->offset = ROM16(entry[4]); 1040 bit->data = ROMPTR(dev, entry[4]); 1041 return 0; 1042 } 1043 1044 entry += bios->data[bios->offset + 9]; 1045 } 1046 1047 return -ENOENT; 1048 } 1049 1050 static int 1051 parse_bit_table(struct nvbios *bios, const uint16_t bitoffset, 1052 struct bit_table *table) 1053 { 1054 struct drm_device *dev = bios->dev; 1055 struct nouveau_drm *drm = nouveau_drm(dev); 1056 struct bit_entry bitentry; 1057 1058 if (bit_table(dev, table->id, &bitentry) == 0) 1059 return table->parse_fn(dev, bios, &bitentry); 1060 1061 NV_INFO(drm, "BIT table '%c' not found\n", table->id); 1062 return -ENOSYS; 1063 } 1064 1065 static int 1066 parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset) 1067 { 1068 int ret; 1069 1070 /* 1071 * The only restriction on parsing order currently is having 'i' first 1072 * for use of bios->*_version or bios->feature_byte while parsing; 1073 * functions shouldn't be actually *doing* anything apart from pulling 1074 * data from the image into the bios struct, thus no interdependencies 1075 */ 1076 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('i', i)); 1077 if (ret) /* info? */ 1078 return ret; 1079 if (bios->major_version >= 0x60) /* g80+ */ 1080 parse_bit_table(bios, bitoffset, &BIT_TABLE('A', A)); 1081 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('C', C)); 1082 if (ret) 1083 return ret; 1084 parse_bit_table(bios, bitoffset, &BIT_TABLE('D', display)); 1085 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('I', init)); 1086 if (ret) 1087 return ret; 1088 parse_bit_table(bios, bitoffset, &BIT_TABLE('M', M)); /* memory? */ 1089 parse_bit_table(bios, bitoffset, &BIT_TABLE('L', lvds)); 1090 parse_bit_table(bios, bitoffset, &BIT_TABLE('T', tmds)); 1091 1092 return 0; 1093 } 1094 1095 static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsigned int offset) 1096 { 1097 /* 1098 * Parses the BMP structure for useful things, but does not act on them 1099 * 1100 * offset + 5: BMP major version 1101 * offset + 6: BMP minor version 1102 * offset + 9: BMP feature byte 1103 * offset + 10: BCD encoded BIOS version 1104 * 1105 * offset + 18: init script table pointer (for bios versions < 5.10h) 1106 * offset + 20: extra init script table pointer (for bios 1107 * versions < 5.10h) 1108 * 1109 * offset + 24: memory init table pointer (used on early bios versions) 1110 * offset + 26: SDR memory sequencing setup data table 1111 * offset + 28: DDR memory sequencing setup data table 1112 * 1113 * offset + 54: index of I2C CRTC pair to use for CRT output 1114 * offset + 55: index of I2C CRTC pair to use for TV output 1115 * offset + 56: index of I2C CRTC pair to use for flat panel output 1116 * offset + 58: write CRTC index for I2C pair 0 1117 * offset + 59: read CRTC index for I2C pair 0 1118 * offset + 60: write CRTC index for I2C pair 1 1119 * offset + 61: read CRTC index for I2C pair 1 1120 * 1121 * offset + 67: maximum internal PLL frequency (single stage PLL) 1122 * offset + 71: minimum internal PLL frequency (single stage PLL) 1123 * 1124 * offset + 75: script table pointers, as described in 1125 * parse_script_table_pointers 1126 * 1127 * offset + 89: TMDS single link output A table pointer 1128 * offset + 91: TMDS single link output B table pointer 1129 * offset + 95: LVDS single link output A table pointer 1130 * offset + 105: flat panel timings table pointer 1131 * offset + 107: flat panel strapping translation table pointer 1132 * offset + 117: LVDS manufacturer panel config table pointer 1133 * offset + 119: LVDS manufacturer strapping translation table pointer 1134 * 1135 * offset + 142: PLL limits table pointer 1136 * 1137 * offset + 156: minimum pixel clock for LVDS dual link 1138 */ 1139 1140 struct nouveau_drm *drm = nouveau_drm(dev); 1141 uint8_t *bmp = &bios->data[offset], bmp_version_major, bmp_version_minor; 1142 uint16_t bmplength; 1143 uint16_t legacy_scripts_offset, legacy_i2c_offset; 1144 1145 /* load needed defaults in case we can't parse this info */ 1146 bios->digital_min_front_porch = 0x4b; 1147 bios->fmaxvco = 256000; 1148 bios->fminvco = 128000; 1149 bios->fp.duallink_transition_clk = 90000; 1150 1151 bmp_version_major = bmp[5]; 1152 bmp_version_minor = bmp[6]; 1153 1154 NV_INFO(drm, "BMP version %d.%d\n", 1155 bmp_version_major, bmp_version_minor); 1156 1157 /* 1158 * Make sure that 0x36 is blank and can't be mistaken for a DCB 1159 * pointer on early versions 1160 */ 1161 if (bmp_version_major < 5) 1162 *(uint16_t *)&bios->data[0x36] = 0; 1163 1164 /* 1165 * Seems that the minor version was 1 for all major versions prior 1166 * to 5. Version 6 could theoretically exist, but I suspect BIT 1167 * happened instead. 1168 */ 1169 if ((bmp_version_major < 5 && bmp_version_minor != 1) || bmp_version_major > 5) { 1170 NV_ERROR(drm, "You have an unsupported BMP version. " 1171 "Please send in your bios\n"); 1172 return -ENOSYS; 1173 } 1174 1175 if (bmp_version_major == 0) 1176 /* nothing that's currently useful in this version */ 1177 return 0; 1178 else if (bmp_version_major == 1) 1179 bmplength = 44; /* exact for 1.01 */ 1180 else if (bmp_version_major == 2) 1181 bmplength = 48; /* exact for 2.01 */ 1182 else if (bmp_version_major == 3) 1183 bmplength = 54; 1184 /* guessed - mem init tables added in this version */ 1185 else if (bmp_version_major == 4 || bmp_version_minor < 0x1) 1186 /* don't know if 5.0 exists... */ 1187 bmplength = 62; 1188 /* guessed - BMP I2C indices added in version 4*/ 1189 else if (bmp_version_minor < 0x6) 1190 bmplength = 67; /* exact for 5.01 */ 1191 else if (bmp_version_minor < 0x10) 1192 bmplength = 75; /* exact for 5.06 */ 1193 else if (bmp_version_minor == 0x10) 1194 bmplength = 89; /* exact for 5.10h */ 1195 else if (bmp_version_minor < 0x14) 1196 bmplength = 118; /* exact for 5.11h */ 1197 else if (bmp_version_minor < 0x24) 1198 /* 1199 * Not sure of version where pll limits came in; 1200 * certainly exist by 0x24 though. 1201 */ 1202 /* length not exact: this is long enough to get lvds members */ 1203 bmplength = 123; 1204 else if (bmp_version_minor < 0x27) 1205 /* 1206 * Length not exact: this is long enough to get pll limit 1207 * member 1208 */ 1209 bmplength = 144; 1210 else 1211 /* 1212 * Length not exact: this is long enough to get dual link 1213 * transition clock. 1214 */ 1215 bmplength = 158; 1216 1217 /* checksum */ 1218 if (nv_cksum(bmp, 8)) { 1219 NV_ERROR(drm, "Bad BMP checksum\n"); 1220 return -EINVAL; 1221 } 1222 1223 /* 1224 * Bit 4 seems to indicate either a mobile bios or a quadro card -- 1225 * mobile behaviour consistent (nv11+), quadro only seen nv18gl-nv36gl 1226 * (not nv10gl), bit 5 that the flat panel tables are present, and 1227 * bit 6 a tv bios. 1228 */ 1229 bios->feature_byte = bmp[9]; 1230 1231 parse_bios_version(dev, bios, offset + 10); 1232 1233 if (bmp_version_major < 5 || bmp_version_minor < 0x10) 1234 bios->old_style_init = true; 1235 legacy_scripts_offset = 18; 1236 if (bmp_version_major < 2) 1237 legacy_scripts_offset -= 4; 1238 bios->init_script_tbls_ptr = ROM16(bmp[legacy_scripts_offset]); 1239 bios->extra_init_script_tbl_ptr = ROM16(bmp[legacy_scripts_offset + 2]); 1240 1241 if (bmp_version_major > 2) { /* appears in BMP 3 */ 1242 bios->legacy.mem_init_tbl_ptr = ROM16(bmp[24]); 1243 bios->legacy.sdr_seq_tbl_ptr = ROM16(bmp[26]); 1244 bios->legacy.ddr_seq_tbl_ptr = ROM16(bmp[28]); 1245 } 1246 1247 legacy_i2c_offset = 0x48; /* BMP version 2 & 3 */ 1248 if (bmplength > 61) 1249 legacy_i2c_offset = offset + 54; 1250 bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset]; 1251 bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1]; 1252 bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2]; 1253 1254 if (bmplength > 74) { 1255 bios->fmaxvco = ROM32(bmp[67]); 1256 bios->fminvco = ROM32(bmp[71]); 1257 } 1258 if (bmplength > 88) 1259 parse_script_table_pointers(bios, offset + 75); 1260 if (bmplength > 94) { 1261 bios->tmds.output0_script_ptr = ROM16(bmp[89]); 1262 bios->tmds.output1_script_ptr = ROM16(bmp[91]); 1263 /* 1264 * Never observed in use with lvds scripts, but is reused for 1265 * 18/24 bit panel interface default for EDID equipped panels 1266 * (if_is_24bit not set directly to avoid any oscillation). 1267 */ 1268 bios->legacy.lvds_single_a_script_ptr = ROM16(bmp[95]); 1269 } 1270 if (bmplength > 108) { 1271 bios->fp.fptablepointer = ROM16(bmp[105]); 1272 bios->fp.fpxlatetableptr = ROM16(bmp[107]); 1273 bios->fp.xlatwidth = 1; 1274 } 1275 if (bmplength > 120) { 1276 bios->fp.lvdsmanufacturerpointer = ROM16(bmp[117]); 1277 bios->fp.fpxlatemanufacturertableptr = ROM16(bmp[119]); 1278 } 1279 if (bmplength > 143) 1280 bios->pll_limit_tbl_ptr = ROM16(bmp[142]); 1281 1282 if (bmplength > 157) 1283 bios->fp.duallink_transition_clk = ROM16(bmp[156]) * 10; 1284 1285 return 0; 1286 } 1287 1288 static uint16_t findstr(uint8_t *data, int n, const uint8_t *str, int len) 1289 { 1290 int i, j; 1291 1292 for (i = 0; i <= (n - len); i++) { 1293 for (j = 0; j < len; j++) 1294 if (data[i + j] != str[j]) 1295 break; 1296 if (j == len) 1297 return i; 1298 } 1299 1300 return 0; 1301 } 1302 1303 void * 1304 olddcb_table(struct drm_device *dev) 1305 { 1306 struct nouveau_drm *drm = nouveau_drm(dev); 1307 u8 *dcb = NULL; 1308 1309 if (nv_device(drm->device)->card_type > NV_04) 1310 dcb = ROMPTR(dev, drm->vbios.data[0x36]); 1311 if (!dcb) { 1312 NV_WARN(drm, "No DCB data found in VBIOS\n"); 1313 return NULL; 1314 } 1315 1316 if (dcb[0] >= 0x41) { 1317 NV_WARN(drm, "DCB version 0x%02x unknown\n", dcb[0]); 1318 return NULL; 1319 } else 1320 if (dcb[0] >= 0x30) { 1321 if (ROM32(dcb[6]) == 0x4edcbdcb) 1322 return dcb; 1323 } else 1324 if (dcb[0] >= 0x20) { 1325 if (ROM32(dcb[4]) == 0x4edcbdcb) 1326 return dcb; 1327 } else 1328 if (dcb[0] >= 0x15) { 1329 if (!memcmp(&dcb[-7], "DEV_REC", 7)) 1330 return dcb; 1331 } else { 1332 /* 1333 * v1.4 (some NV15/16, NV11+) seems the same as v1.5, but 1334 * always has the same single (crt) entry, even when tv-out 1335 * present, so the conclusion is this version cannot really 1336 * be used. 1337 * 1338 * v1.2 tables (some NV6/10, and NV15+) normally have the 1339 * same 5 entries, which are not specific to the card and so 1340 * no use. 1341 * 1342 * v1.2 does have an I2C table that read_dcb_i2c_table can 1343 * handle, but cards exist (nv11 in #14821) with a bad i2c 1344 * table pointer, so use the indices parsed in 1345 * parse_bmp_structure. 1346 * 1347 * v1.1 (NV5+, maybe some NV4) is entirely unhelpful 1348 */ 1349 NV_WARN(drm, "No useful DCB data in VBIOS\n"); 1350 return NULL; 1351 } 1352 1353 NV_WARN(drm, "DCB header validation failed\n"); 1354 return NULL; 1355 } 1356 1357 void * 1358 olddcb_outp(struct drm_device *dev, u8 idx) 1359 { 1360 u8 *dcb = olddcb_table(dev); 1361 if (dcb && dcb[0] >= 0x30) { 1362 if (idx < dcb[2]) 1363 return dcb + dcb[1] + (idx * dcb[3]); 1364 } else 1365 if (dcb && dcb[0] >= 0x20) { 1366 u8 *i2c = ROMPTR(dev, dcb[2]); 1367 u8 *ent = dcb + 8 + (idx * 8); 1368 if (i2c && ent < i2c) 1369 return ent; 1370 } else 1371 if (dcb && dcb[0] >= 0x15) { 1372 u8 *i2c = ROMPTR(dev, dcb[2]); 1373 u8 *ent = dcb + 4 + (idx * 10); 1374 if (i2c && ent < i2c) 1375 return ent; 1376 } 1377 1378 return NULL; 1379 } 1380 1381 int 1382 olddcb_outp_foreach(struct drm_device *dev, void *data, 1383 int (*exec)(struct drm_device *, void *, int idx, u8 *outp)) 1384 { 1385 int ret, idx = -1; 1386 u8 *outp = NULL; 1387 while ((outp = olddcb_outp(dev, ++idx))) { 1388 if (ROM32(outp[0]) == 0x00000000) 1389 break; /* seen on an NV11 with DCB v1.5 */ 1390 if (ROM32(outp[0]) == 0xffffffff) 1391 break; /* seen on an NV17 with DCB v2.0 */ 1392 1393 if ((outp[0] & 0x0f) == DCB_OUTPUT_UNUSED) 1394 continue; 1395 if ((outp[0] & 0x0f) == DCB_OUTPUT_EOL) 1396 break; 1397 1398 ret = exec(dev, data, idx, outp); 1399 if (ret) 1400 return ret; 1401 } 1402 1403 return 0; 1404 } 1405 1406 u8 * 1407 olddcb_conntab(struct drm_device *dev) 1408 { 1409 u8 *dcb = olddcb_table(dev); 1410 if (dcb && dcb[0] >= 0x30 && dcb[1] >= 0x16) { 1411 u8 *conntab = ROMPTR(dev, dcb[0x14]); 1412 if (conntab && conntab[0] >= 0x30 && conntab[0] <= 0x40) 1413 return conntab; 1414 } 1415 return NULL; 1416 } 1417 1418 u8 * 1419 olddcb_conn(struct drm_device *dev, u8 idx) 1420 { 1421 u8 *conntab = olddcb_conntab(dev); 1422 if (conntab && idx < conntab[2]) 1423 return conntab + conntab[1] + (idx * conntab[3]); 1424 return NULL; 1425 } 1426 1427 static struct dcb_output *new_dcb_entry(struct dcb_table *dcb) 1428 { 1429 struct dcb_output *entry = &dcb->entry[dcb->entries]; 1430 1431 memset(entry, 0, sizeof(struct dcb_output)); 1432 entry->index = dcb->entries++; 1433 1434 return entry; 1435 } 1436 1437 static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c, 1438 int heads, int or) 1439 { 1440 struct dcb_output *entry = new_dcb_entry(dcb); 1441 1442 entry->type = type; 1443 entry->i2c_index = i2c; 1444 entry->heads = heads; 1445 if (type != DCB_OUTPUT_ANALOG) 1446 entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */ 1447 entry->or = or; 1448 } 1449 1450 static bool 1451 parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb, 1452 uint32_t conn, uint32_t conf, struct dcb_output *entry) 1453 { 1454 struct nouveau_drm *drm = nouveau_drm(dev); 1455 1456 entry->type = conn & 0xf; 1457 entry->i2c_index = (conn >> 4) & 0xf; 1458 entry->heads = (conn >> 8) & 0xf; 1459 entry->connector = (conn >> 12) & 0xf; 1460 entry->bus = (conn >> 16) & 0xf; 1461 entry->location = (conn >> 20) & 0x3; 1462 entry->or = (conn >> 24) & 0xf; 1463 1464 switch (entry->type) { 1465 case DCB_OUTPUT_ANALOG: 1466 /* 1467 * Although the rest of a CRT conf dword is usually 1468 * zeros, mac biosen have stuff there so we must mask 1469 */ 1470 entry->crtconf.maxfreq = (dcb->version < 0x30) ? 1471 (conf & 0xffff) * 10 : 1472 (conf & 0xff) * 10000; 1473 break; 1474 case DCB_OUTPUT_LVDS: 1475 { 1476 uint32_t mask; 1477 if (conf & 0x1) 1478 entry->lvdsconf.use_straps_for_mode = true; 1479 if (dcb->version < 0x22) { 1480 mask = ~0xd; 1481 /* 1482 * The laptop in bug 14567 lies and claims to not use 1483 * straps when it does, so assume all DCB 2.0 laptops 1484 * use straps, until a broken EDID using one is produced 1485 */ 1486 entry->lvdsconf.use_straps_for_mode = true; 1487 /* 1488 * Both 0x4 and 0x8 show up in v2.0 tables; assume they 1489 * mean the same thing (probably wrong, but might work) 1490 */ 1491 if (conf & 0x4 || conf & 0x8) 1492 entry->lvdsconf.use_power_scripts = true; 1493 } else { 1494 mask = ~0x7; 1495 if (conf & 0x2) 1496 entry->lvdsconf.use_acpi_for_edid = true; 1497 if (conf & 0x4) 1498 entry->lvdsconf.use_power_scripts = true; 1499 entry->lvdsconf.sor.link = (conf & 0x00000030) >> 4; 1500 } 1501 if (conf & mask) { 1502 /* 1503 * Until we even try to use these on G8x, it's 1504 * useless reporting unknown bits. They all are. 1505 */ 1506 if (dcb->version >= 0x40) 1507 break; 1508 1509 NV_ERROR(drm, "Unknown LVDS configuration bits, " 1510 "please report\n"); 1511 } 1512 break; 1513 } 1514 case DCB_OUTPUT_TV: 1515 { 1516 if (dcb->version >= 0x30) 1517 entry->tvconf.has_component_output = conf & (0x8 << 4); 1518 else 1519 entry->tvconf.has_component_output = false; 1520 1521 break; 1522 } 1523 case DCB_OUTPUT_DP: 1524 entry->dpconf.sor.link = (conf & 0x00000030) >> 4; 1525 switch ((conf & 0x00e00000) >> 21) { 1526 case 0: 1527 entry->dpconf.link_bw = 162000; 1528 break; 1529 default: 1530 entry->dpconf.link_bw = 270000; 1531 break; 1532 } 1533 switch ((conf & 0x0f000000) >> 24) { 1534 case 0xf: 1535 entry->dpconf.link_nr = 4; 1536 break; 1537 case 0x3: 1538 entry->dpconf.link_nr = 2; 1539 break; 1540 default: 1541 entry->dpconf.link_nr = 1; 1542 break; 1543 } 1544 break; 1545 case DCB_OUTPUT_TMDS: 1546 if (dcb->version >= 0x40) 1547 entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4; 1548 else if (dcb->version >= 0x30) 1549 entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8; 1550 else if (dcb->version >= 0x22) 1551 entry->tmdsconf.slave_addr = (conf & 0x00000070) >> 4; 1552 1553 break; 1554 case DCB_OUTPUT_EOL: 1555 /* weird g80 mobile type that "nv" treats as a terminator */ 1556 dcb->entries--; 1557 return false; 1558 default: 1559 break; 1560 } 1561 1562 if (dcb->version < 0x40) { 1563 /* Normal entries consist of a single bit, but dual link has 1564 * the next most significant bit set too 1565 */ 1566 entry->duallink_possible = 1567 ((1 << (ffs(entry->or) - 1)) * 3 == entry->or); 1568 } else { 1569 entry->duallink_possible = (entry->sorconf.link == 3); 1570 } 1571 1572 /* unsure what DCB version introduces this, 3.0? */ 1573 if (conf & 0x100000) 1574 entry->i2c_upper_default = true; 1575 1576 return true; 1577 } 1578 1579 static bool 1580 parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb, 1581 uint32_t conn, uint32_t conf, struct dcb_output *entry) 1582 { 1583 struct nouveau_drm *drm = nouveau_drm(dev); 1584 1585 switch (conn & 0x0000000f) { 1586 case 0: 1587 entry->type = DCB_OUTPUT_ANALOG; 1588 break; 1589 case 1: 1590 entry->type = DCB_OUTPUT_TV; 1591 break; 1592 case 2: 1593 case 4: 1594 if (conn & 0x10) 1595 entry->type = DCB_OUTPUT_LVDS; 1596 else 1597 entry->type = DCB_OUTPUT_TMDS; 1598 break; 1599 case 3: 1600 entry->type = DCB_OUTPUT_LVDS; 1601 break; 1602 default: 1603 NV_ERROR(drm, "Unknown DCB type %d\n", conn & 0x0000000f); 1604 return false; 1605 } 1606 1607 entry->i2c_index = (conn & 0x0003c000) >> 14; 1608 entry->heads = ((conn & 0x001c0000) >> 18) + 1; 1609 entry->or = entry->heads; /* same as heads, hopefully safe enough */ 1610 entry->location = (conn & 0x01e00000) >> 21; 1611 entry->bus = (conn & 0x0e000000) >> 25; 1612 entry->duallink_possible = false; 1613 1614 switch (entry->type) { 1615 case DCB_OUTPUT_ANALOG: 1616 entry->crtconf.maxfreq = (conf & 0xffff) * 10; 1617 break; 1618 case DCB_OUTPUT_TV: 1619 entry->tvconf.has_component_output = false; 1620 break; 1621 case DCB_OUTPUT_LVDS: 1622 if ((conn & 0x00003f00) >> 8 != 0x10) 1623 entry->lvdsconf.use_straps_for_mode = true; 1624 entry->lvdsconf.use_power_scripts = true; 1625 break; 1626 default: 1627 break; 1628 } 1629 1630 return true; 1631 } 1632 1633 static 1634 void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb) 1635 { 1636 /* 1637 * DCB v2.0 lists each output combination separately. 1638 * Here we merge compatible entries to have fewer outputs, with 1639 * more options 1640 */ 1641 1642 struct nouveau_drm *drm = nouveau_drm(dev); 1643 int i, newentries = 0; 1644 1645 for (i = 0; i < dcb->entries; i++) { 1646 struct dcb_output *ient = &dcb->entry[i]; 1647 int j; 1648 1649 for (j = i + 1; j < dcb->entries; j++) { 1650 struct dcb_output *jent = &dcb->entry[j]; 1651 1652 if (jent->type == 100) /* already merged entry */ 1653 continue; 1654 1655 /* merge heads field when all other fields the same */ 1656 if (jent->i2c_index == ient->i2c_index && 1657 jent->type == ient->type && 1658 jent->location == ient->location && 1659 jent->or == ient->or) { 1660 NV_INFO(drm, "Merging DCB entries %d and %d\n", 1661 i, j); 1662 ient->heads |= jent->heads; 1663 jent->type = 100; /* dummy value */ 1664 } 1665 } 1666 } 1667 1668 /* Compact entries merged into others out of dcb */ 1669 for (i = 0; i < dcb->entries; i++) { 1670 if (dcb->entry[i].type == 100) 1671 continue; 1672 1673 if (newentries != i) { 1674 dcb->entry[newentries] = dcb->entry[i]; 1675 dcb->entry[newentries].index = newentries; 1676 } 1677 newentries++; 1678 } 1679 1680 dcb->entries = newentries; 1681 } 1682 1683 static bool 1684 apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf) 1685 { 1686 struct nouveau_drm *drm = nouveau_drm(dev); 1687 struct dcb_table *dcb = &drm->vbios.dcb; 1688 1689 /* Dell Precision M6300 1690 * DCB entry 2: 02025312 00000010 1691 * DCB entry 3: 02026312 00000020 1692 * 1693 * Identical, except apparently a different connector on a 1694 * different SOR link. Not a clue how we're supposed to know 1695 * which one is in use if it even shares an i2c line... 1696 * 1697 * Ignore the connector on the second SOR link to prevent 1698 * nasty problems until this is sorted (assuming it's not a 1699 * VBIOS bug). 1700 */ 1701 if (nv_match_device(dev, 0x040d, 0x1028, 0x019b)) { 1702 if (*conn == 0x02026312 && *conf == 0x00000020) 1703 return false; 1704 } 1705 1706 /* GeForce3 Ti 200 1707 * 1708 * DCB reports an LVDS output that should be TMDS: 1709 * DCB entry 1: f2005014 ffffffff 1710 */ 1711 if (nv_match_device(dev, 0x0201, 0x1462, 0x8851)) { 1712 if (*conn == 0xf2005014 && *conf == 0xffffffff) { 1713 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1, 1, 1); 1714 return false; 1715 } 1716 } 1717 1718 /* XFX GT-240X-YA 1719 * 1720 * So many things wrong here, replace the entire encoder table.. 1721 */ 1722 if (nv_match_device(dev, 0x0ca3, 0x1682, 0x3003)) { 1723 if (idx == 0) { 1724 *conn = 0x02001300; /* VGA, connector 1 */ 1725 *conf = 0x00000028; 1726 } else 1727 if (idx == 1) { 1728 *conn = 0x01010312; /* DVI, connector 0 */ 1729 *conf = 0x00020030; 1730 } else 1731 if (idx == 2) { 1732 *conn = 0x01010310; /* VGA, connector 0 */ 1733 *conf = 0x00000028; 1734 } else 1735 if (idx == 3) { 1736 *conn = 0x02022362; /* HDMI, connector 2 */ 1737 *conf = 0x00020010; 1738 } else { 1739 *conn = 0x0000000e; /* EOL */ 1740 *conf = 0x00000000; 1741 } 1742 } 1743 1744 /* Some other twisted XFX board (rhbz#694914) 1745 * 1746 * The DVI/VGA encoder combo that's supposed to represent the 1747 * DVI-I connector actually point at two different ones, and 1748 * the HDMI connector ends up paired with the VGA instead. 1749 * 1750 * Connector table is missing anything for VGA at all, pointing it 1751 * an invalid conntab entry 2 so we figure it out ourself. 1752 */ 1753 if (nv_match_device(dev, 0x0615, 0x1682, 0x2605)) { 1754 if (idx == 0) { 1755 *conn = 0x02002300; /* VGA, connector 2 */ 1756 *conf = 0x00000028; 1757 } else 1758 if (idx == 1) { 1759 *conn = 0x01010312; /* DVI, connector 0 */ 1760 *conf = 0x00020030; 1761 } else 1762 if (idx == 2) { 1763 *conn = 0x04020310; /* VGA, connector 0 */ 1764 *conf = 0x00000028; 1765 } else 1766 if (idx == 3) { 1767 *conn = 0x02021322; /* HDMI, connector 1 */ 1768 *conf = 0x00020010; 1769 } else { 1770 *conn = 0x0000000e; /* EOL */ 1771 *conf = 0x00000000; 1772 } 1773 } 1774 1775 /* fdo#50830: connector indices for VGA and DVI-I are backwards */ 1776 if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) { 1777 if (idx == 0 && *conn == 0x02000300) 1778 *conn = 0x02011300; 1779 else 1780 if (idx == 1 && *conn == 0x04011310) 1781 *conn = 0x04000310; 1782 else 1783 if (idx == 2 && *conn == 0x02011312) 1784 *conn = 0x02000312; 1785 } 1786 1787 return true; 1788 } 1789 1790 static void 1791 fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios) 1792 { 1793 struct dcb_table *dcb = &bios->dcb; 1794 int all_heads = (nv_two_heads(dev) ? 3 : 1); 1795 1796 #ifdef __powerpc__ 1797 /* Apple iMac G4 NV17 */ 1798 if (of_machine_is_compatible("PowerMac4,5")) { 1799 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 0, all_heads, 1); 1800 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1, all_heads, 2); 1801 return; 1802 } 1803 #endif 1804 1805 /* Make up some sane defaults */ 1806 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1807 bios->legacy.i2c_indices.crt, 1, 1); 1808 1809 if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0) 1810 fabricate_dcb_output(dcb, DCB_OUTPUT_TV, 1811 bios->legacy.i2c_indices.tv, 1812 all_heads, 0); 1813 1814 else if (bios->tmds.output0_script_ptr || 1815 bios->tmds.output1_script_ptr) 1816 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1817 bios->legacy.i2c_indices.panel, 1818 all_heads, 1); 1819 } 1820 1821 static int 1822 parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp) 1823 { 1824 struct nouveau_drm *drm = nouveau_drm(dev); 1825 struct dcb_table *dcb = &drm->vbios.dcb; 1826 u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]); 1827 u32 conn = ROM32(outp[0]); 1828 bool ret; 1829 1830 if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) { 1831 struct dcb_output *entry = new_dcb_entry(dcb); 1832 1833 NV_INFO(drm, "DCB outp %02d: %08x %08x\n", idx, conn, conf); 1834 1835 if (dcb->version >= 0x20) 1836 ret = parse_dcb20_entry(dev, dcb, conn, conf, entry); 1837 else 1838 ret = parse_dcb15_entry(dev, dcb, conn, conf, entry); 1839 if (!ret) 1840 return 1; /* stop parsing */ 1841 1842 /* Ignore the I2C index for on-chip TV-out, as there 1843 * are cards with bogus values (nv31m in bug 23212), 1844 * and it's otherwise useless. 1845 */ 1846 if (entry->type == DCB_OUTPUT_TV && 1847 entry->location == DCB_LOC_ON_CHIP) 1848 entry->i2c_index = 0x0f; 1849 } 1850 1851 return 0; 1852 } 1853 1854 static void 1855 dcb_fake_connectors(struct nvbios *bios) 1856 { 1857 struct dcb_table *dcbt = &bios->dcb; 1858 u8 map[16] = { }; 1859 int i, idx = 0; 1860 1861 /* heuristic: if we ever get a non-zero connector field, assume 1862 * that all the indices are valid and we don't need fake them. 1863 * 1864 * and, as usual, a blacklist of boards with bad bios data.. 1865 */ 1866 if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) { 1867 for (i = 0; i < dcbt->entries; i++) { 1868 if (dcbt->entry[i].connector) 1869 return; 1870 } 1871 } 1872 1873 /* no useful connector info available, we need to make it up 1874 * ourselves. the rule here is: anything on the same i2c bus 1875 * is considered to be on the same connector. any output 1876 * without an associated i2c bus is assigned its own unique 1877 * connector index. 1878 */ 1879 for (i = 0; i < dcbt->entries; i++) { 1880 u8 i2c = dcbt->entry[i].i2c_index; 1881 if (i2c == 0x0f) { 1882 dcbt->entry[i].connector = idx++; 1883 } else { 1884 if (!map[i2c]) 1885 map[i2c] = ++idx; 1886 dcbt->entry[i].connector = map[i2c] - 1; 1887 } 1888 } 1889 1890 /* if we created more than one connector, destroy the connector 1891 * table - just in case it has random, rather than stub, entries. 1892 */ 1893 if (i > 1) { 1894 u8 *conntab = olddcb_conntab(bios->dev); 1895 if (conntab) 1896 conntab[0] = 0x00; 1897 } 1898 } 1899 1900 static int 1901 parse_dcb_table(struct drm_device *dev, struct nvbios *bios) 1902 { 1903 struct nouveau_drm *drm = nouveau_drm(dev); 1904 struct dcb_table *dcb = &bios->dcb; 1905 u8 *dcbt, *conn; 1906 int idx; 1907 1908 dcbt = olddcb_table(dev); 1909 if (!dcbt) { 1910 /* handle pre-DCB boards */ 1911 if (bios->type == NVBIOS_BMP) { 1912 fabricate_dcb_encoder_table(dev, bios); 1913 return 0; 1914 } 1915 1916 return -EINVAL; 1917 } 1918 1919 NV_INFO(drm, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf); 1920 1921 dcb->version = dcbt[0]; 1922 olddcb_outp_foreach(dev, NULL, parse_dcb_entry); 1923 1924 /* 1925 * apart for v2.1+ not being known for requiring merging, this 1926 * guarantees dcbent->index is the index of the entry in the rom image 1927 */ 1928 if (dcb->version < 0x21) 1929 merge_like_dcb_entries(dev, dcb); 1930 1931 if (!dcb->entries) 1932 return -ENXIO; 1933 1934 /* dump connector table entries to log, if any exist */ 1935 idx = -1; 1936 while ((conn = olddcb_conn(dev, ++idx))) { 1937 if (conn[0] != 0xff) { 1938 NV_INFO(drm, "DCB conn %02d: ", idx); 1939 if (olddcb_conntab(dev)[3] < 4) 1940 printk("%04x\n", ROM16(conn[0])); 1941 else 1942 printk("%08x\n", ROM32(conn[0])); 1943 } 1944 } 1945 dcb_fake_connectors(bios); 1946 return 0; 1947 } 1948 1949 static int load_nv17_hwsq_ucode_entry(struct drm_device *dev, struct nvbios *bios, uint16_t hwsq_offset, int entry) 1950 { 1951 /* 1952 * The header following the "HWSQ" signature has the number of entries, 1953 * and the entry size 1954 * 1955 * An entry consists of a dword to write to the sequencer control reg 1956 * (0x00001304), followed by the ucode bytes, written sequentially, 1957 * starting at reg 0x00001400 1958 */ 1959 1960 struct nouveau_drm *drm = nouveau_drm(dev); 1961 struct nouveau_device *device = nv_device(drm->device); 1962 uint8_t bytes_to_write; 1963 uint16_t hwsq_entry_offset; 1964 int i; 1965 1966 if (bios->data[hwsq_offset] <= entry) { 1967 NV_ERROR(drm, "Too few entries in HW sequencer table for " 1968 "requested entry\n"); 1969 return -ENOENT; 1970 } 1971 1972 bytes_to_write = bios->data[hwsq_offset + 1]; 1973 1974 if (bytes_to_write != 36) { 1975 NV_ERROR(drm, "Unknown HW sequencer entry size\n"); 1976 return -EINVAL; 1977 } 1978 1979 NV_INFO(drm, "Loading NV17 power sequencing microcode\n"); 1980 1981 hwsq_entry_offset = hwsq_offset + 2 + entry * bytes_to_write; 1982 1983 /* set sequencer control */ 1984 nv_wr32(device, 0x00001304, ROM32(bios->data[hwsq_entry_offset])); 1985 bytes_to_write -= 4; 1986 1987 /* write ucode */ 1988 for (i = 0; i < bytes_to_write; i += 4) 1989 nv_wr32(device, 0x00001400 + i, ROM32(bios->data[hwsq_entry_offset + i + 4])); 1990 1991 /* twiddle NV_PBUS_DEBUG_4 */ 1992 nv_wr32(device, NV_PBUS_DEBUG_4, nv_rd32(device, NV_PBUS_DEBUG_4) | 0x18); 1993 1994 return 0; 1995 } 1996 1997 static int load_nv17_hw_sequencer_ucode(struct drm_device *dev, 1998 struct nvbios *bios) 1999 { 2000 /* 2001 * BMP based cards, from NV17, need a microcode loading to correctly 2002 * control the GPIO etc for LVDS panels 2003 * 2004 * BIT based cards seem to do this directly in the init scripts 2005 * 2006 * The microcode entries are found by the "HWSQ" signature. 2007 */ 2008 2009 const uint8_t hwsq_signature[] = { 'H', 'W', 'S', 'Q' }; 2010 const int sz = sizeof(hwsq_signature); 2011 int hwsq_offset; 2012 2013 hwsq_offset = findstr(bios->data, bios->length, hwsq_signature, sz); 2014 if (!hwsq_offset) 2015 return 0; 2016 2017 /* always use entry 0? */ 2018 return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0); 2019 } 2020 2021 uint8_t *nouveau_bios_embedded_edid(struct drm_device *dev) 2022 { 2023 struct nouveau_drm *drm = nouveau_drm(dev); 2024 struct nvbios *bios = &drm->vbios; 2025 const uint8_t edid_sig[] = { 2026 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }; 2027 uint16_t offset = 0; 2028 uint16_t newoffset; 2029 int searchlen = NV_PROM_SIZE; 2030 2031 if (bios->fp.edid) 2032 return bios->fp.edid; 2033 2034 while (searchlen) { 2035 newoffset = findstr(&bios->data[offset], searchlen, 2036 edid_sig, 8); 2037 if (!newoffset) 2038 return NULL; 2039 offset += newoffset; 2040 if (!nv_cksum(&bios->data[offset], EDID1_LEN)) 2041 break; 2042 2043 searchlen -= offset; 2044 offset++; 2045 } 2046 2047 NV_INFO(drm, "Found EDID in BIOS\n"); 2048 2049 return bios->fp.edid = &bios->data[offset]; 2050 } 2051 2052 static bool NVInitVBIOS(struct drm_device *dev) 2053 { 2054 struct nouveau_drm *drm = nouveau_drm(dev); 2055 struct nvbios *bios = &drm->vbios; 2056 2057 memset(bios, 0, sizeof(struct nvbios)); 2058 spin_lock_init(&bios->lock); 2059 bios->dev = dev; 2060 2061 bios->data = nouveau_bios(drm->device)->data; 2062 bios->length = nouveau_bios(drm->device)->size; 2063 return true; 2064 } 2065 2066 static int nouveau_parse_vbios_struct(struct drm_device *dev) 2067 { 2068 struct nouveau_drm *drm = nouveau_drm(dev); 2069 struct nvbios *bios = &drm->vbios; 2070 const uint8_t bit_signature[] = { 0xff, 0xb8, 'B', 'I', 'T' }; 2071 const uint8_t bmp_signature[] = { 0xff, 0x7f, 'N', 'V', 0x0 }; 2072 int offset; 2073 2074 offset = findstr(bios->data, bios->length, 2075 bit_signature, sizeof(bit_signature)); 2076 if (offset) { 2077 NV_INFO(drm, "BIT BIOS found\n"); 2078 bios->type = NVBIOS_BIT; 2079 bios->offset = offset; 2080 return parse_bit_structure(bios, offset + 6); 2081 } 2082 2083 offset = findstr(bios->data, bios->length, 2084 bmp_signature, sizeof(bmp_signature)); 2085 if (offset) { 2086 NV_INFO(drm, "BMP BIOS found\n"); 2087 bios->type = NVBIOS_BMP; 2088 bios->offset = offset; 2089 return parse_bmp_structure(dev, bios, offset); 2090 } 2091 2092 NV_ERROR(drm, "No known BIOS signature found\n"); 2093 return -ENODEV; 2094 } 2095 2096 int 2097 nouveau_run_vbios_init(struct drm_device *dev) 2098 { 2099 struct nouveau_drm *drm = nouveau_drm(dev); 2100 struct nvbios *bios = &drm->vbios; 2101 int ret = 0; 2102 2103 /* Reset the BIOS head to 0. */ 2104 bios->state.crtchead = 0; 2105 2106 if (bios->major_version < 5) /* BMP only */ 2107 load_nv17_hw_sequencer_ucode(dev, bios); 2108 2109 if (bios->execute) { 2110 bios->fp.last_script_invoc = 0; 2111 bios->fp.lvds_init_run = false; 2112 } 2113 2114 return ret; 2115 } 2116 2117 static bool 2118 nouveau_bios_posted(struct drm_device *dev) 2119 { 2120 struct nouveau_drm *drm = nouveau_drm(dev); 2121 unsigned htotal; 2122 2123 if (nv_device(drm->device)->card_type >= NV_50) { 2124 if (NVReadVgaCrtc(dev, 0, 0x00) == 0 && 2125 NVReadVgaCrtc(dev, 0, 0x1a) == 0) 2126 return false; 2127 return true; 2128 } 2129 2130 htotal = NVReadVgaCrtc(dev, 0, 0x06); 2131 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8; 2132 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4; 2133 htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10; 2134 htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11; 2135 2136 return (htotal != 0); 2137 } 2138 2139 int 2140 nouveau_bios_init(struct drm_device *dev) 2141 { 2142 struct nouveau_drm *drm = nouveau_drm(dev); 2143 struct nvbios *bios = &drm->vbios; 2144 int ret; 2145 2146 if (!NVInitVBIOS(dev)) 2147 return -ENODEV; 2148 2149 ret = nouveau_parse_vbios_struct(dev); 2150 if (ret) 2151 return ret; 2152 2153 ret = parse_dcb_table(dev, bios); 2154 if (ret) 2155 return ret; 2156 2157 if (!bios->major_version) /* we don't run version 0 bios */ 2158 return 0; 2159 2160 /* init script execution disabled */ 2161 bios->execute = false; 2162 2163 /* ... unless card isn't POSTed already */ 2164 if (!nouveau_bios_posted(dev)) { 2165 NV_INFO(drm, "Adaptor not initialised, " 2166 "running VBIOS init tables.\n"); 2167 bios->execute = true; 2168 } 2169 2170 ret = nouveau_run_vbios_init(dev); 2171 if (ret) 2172 return ret; 2173 2174 /* feature_byte on BMP is poor, but init always sets CR4B */ 2175 if (bios->major_version < 5) 2176 bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40; 2177 2178 /* all BIT systems need p_f_m_t for digital_min_front_porch */ 2179 if (bios->is_mobile || bios->major_version >= 5) 2180 ret = parse_fp_mode_table(dev, bios); 2181 2182 /* allow subsequent scripts to execute */ 2183 bios->execute = true; 2184 2185 return 0; 2186 } 2187 2188 void 2189 nouveau_bios_takedown(struct drm_device *dev) 2190 { 2191 } 2192