1/* $NetBSD: nouveau_bios.c,v 1.6 2021/12/19 11:34:44 riastradh Exp $ */ 2 3/* 4 * Copyright 2005-2006 Erik Waling 5 * Copyright 2006 Stephane Marchesin 6 * Copyright 2007-2009 Stuart Bennett 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 23 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 */ 26 27#include <sys/cdefs.h> 28__KERNEL_RCSID(0, "$NetBSD: nouveau_bios.c,v 1.6 2021/12/19 11:34:44 riastradh Exp $"); 29 30#include "nouveau_drv.h" 31#include "nouveau_reg.h" 32#include "dispnv04/hw.h" 33#include "nouveau_encoder.h" 34 35#include <linux/io-mapping.h> 36#include <linux/firmware.h> 37 38/* these defines are made up */ 39#define NV_CIO_CRE_44_HEADA 0x0 40#define NV_CIO_CRE_44_HEADB 0x3 41#define FEATURE_MOBILE 0x10 /* also FEATURE_QUADRO for BMP */ 42 43#define EDID1_LEN 128 44 45#define BIOSLOG(sip, fmt, arg...) NV_DEBUG(sip->dev, fmt, ##arg) 46#define LOG_OLD_VALUE(x) 47 48struct init_exec { 49 bool execute; 50 bool repeat; 51}; 52 53static bool nv_cksum(const uint8_t *data, unsigned int length) 54{ 55 /* 56 * There's a few checksums in the BIOS, so here's a generic checking 57 * function. 58 */ 59 int i; 60 uint8_t sum = 0; 61 62 for (i = 0; i < length; i++) 63 sum += data[i]; 64 65 if (sum) 66 return true; 67 68 return false; 69} 70 71static uint16_t clkcmptable(struct nvbios *bios, uint16_t clktable, int pxclk) 72{ 73 int compare_record_len, i = 0; 74 uint16_t compareclk, scriptptr = 0; 75 76 if (bios->major_version < 5) /* pre BIT */ 77 compare_record_len = 3; 78 else 79 compare_record_len = 4; 80 81 do { 82 compareclk = ROM16(bios->data[clktable + compare_record_len * i]); 83 if (pxclk >= compareclk * 10) { 84 if (bios->major_version < 5) { 85 uint8_t tmdssub = bios->data[clktable + 2 + compare_record_len * i]; 86 scriptptr = ROM16(bios->data[bios->init_script_tbls_ptr + tmdssub * 2]); 87 } else 88 scriptptr = ROM16(bios->data[clktable + 2 + compare_record_len * i]); 89 break; 90 } 91 i++; 92 } while (compareclk); 93 94 return scriptptr; 95} 96 97static void 98run_digital_op_script(struct drm_device *dev, uint16_t scriptptr, 99 struct dcb_output *dcbent, int head, bool dl) 100{ 101 struct nouveau_drm *drm = nouveau_drm(dev); 102 103 NV_INFO(drm, "0x%04X: Parsing digital output script table\n", 104 scriptptr); 105 NVWriteVgaCrtc(dev, 0, NV_CIO_CRE_44, head ? NV_CIO_CRE_44_HEADB : 106 NV_CIO_CRE_44_HEADA); 107 nouveau_bios_run_init_table(dev, scriptptr, dcbent, head); 108 109 nv04_dfp_bind_head(dev, dcbent, head, dl); 110} 111 112static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script) 113{ 114 struct nouveau_drm *drm = nouveau_drm(dev); 115 struct nvbios *bios = &drm->vbios; 116 uint8_t sub = bios->data[bios->fp.xlated_entry + script] + (bios->fp.link_c_increment && dcbent->or & DCB_OUTPUT_C ? 1 : 0); 117 uint16_t scriptofs = ROM16(bios->data[bios->init_script_tbls_ptr + sub * 2]); 118 119 if (!bios->fp.xlated_entry || !sub || !scriptofs) 120 return -EINVAL; 121 122 run_digital_op_script(dev, scriptofs, dcbent, head, bios->fp.dual_link); 123 124 if (script == LVDS_PANEL_OFF) { 125 /* off-on delay in ms */ 126 mdelay(ROM16(bios->data[bios->fp.xlated_entry + 7])); 127 } 128#ifdef __powerpc__ 129 /* Powerbook specific quirks */ 130 if (script == LVDS_RESET && 131 (dev->pdev->device == 0x0179 || dev->pdev->device == 0x0189 || 132 dev->pdev->device == 0x0329)) 133 nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72); 134#endif 135 136 return 0; 137} 138 139static int run_lvds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk) 140{ 141 /* 142 * The BIT LVDS table's header has the information to setup the 143 * necessary registers. Following the standard 4 byte header are: 144 * A bitmask byte and a dual-link transition pxclk value for use in 145 * selecting the init script when not using straps; 4 script pointers 146 * for panel power, selected by output and on/off; and 8 table pointers 147 * for panel init, the needed one determined by output, and bits in the 148 * conf byte. These tables are similar to the TMDS tables, consisting 149 * of a list of pxclks and script pointers. 150 */ 151 struct nouveau_drm *drm = nouveau_drm(dev); 152 struct nvbios *bios = &drm->vbios; 153 unsigned int outputset = (dcbent->or == 4) ? 1 : 0; 154 uint16_t scriptptr = 0, clktable; 155 156 /* 157 * For now we assume version 3.0 table - g80 support will need some 158 * changes 159 */ 160 161 switch (script) { 162 case LVDS_INIT: 163 return -ENOSYS; 164 case LVDS_BACKLIGHT_ON: 165 case LVDS_PANEL_ON: 166 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 7 + outputset * 2]); 167 break; 168 case LVDS_BACKLIGHT_OFF: 169 case LVDS_PANEL_OFF: 170 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 11 + outputset * 2]); 171 break; 172 case LVDS_RESET: 173 clktable = bios->fp.lvdsmanufacturerpointer + 15; 174 if (dcbent->or == 4) 175 clktable += 8; 176 177 if (dcbent->lvdsconf.use_straps_for_mode) { 178 if (bios->fp.dual_link) 179 clktable += 4; 180 if (bios->fp.if_is_24bit) 181 clktable += 2; 182 } else { 183 /* using EDID */ 184 int cmpval_24bit = (dcbent->or == 4) ? 4 : 1; 185 186 if (bios->fp.dual_link) { 187 clktable += 4; 188 cmpval_24bit <<= 1; 189 } 190 191 if (bios->fp.strapless_is_24bit & cmpval_24bit) 192 clktable += 2; 193 } 194 195 clktable = ROM16(bios->data[clktable]); 196 if (!clktable) { 197 NV_ERROR(drm, "Pixel clock comparison table not found\n"); 198 return -ENOENT; 199 } 200 scriptptr = clkcmptable(bios, clktable, pxclk); 201 } 202 203 if (!scriptptr) { 204 NV_ERROR(drm, "LVDS output init script not found\n"); 205 return -ENOENT; 206 } 207 run_digital_op_script(dev, scriptptr, dcbent, head, bios->fp.dual_link); 208 209 return 0; 210} 211 212int call_lvds_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk) 213{ 214 /* 215 * LVDS operations are multiplexed in an effort to present a single API 216 * which works with two vastly differing underlying structures. 217 * This acts as the demux 218 */ 219 220 struct nouveau_drm *drm = nouveau_drm(dev); 221 struct nvif_object *device = &drm->client.device.object; 222 struct nvbios *bios = &drm->vbios; 223 uint8_t lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer]; 224 uint32_t sel_clk_binding, sel_clk; 225 int ret; 226 227 if (bios->fp.last_script_invoc == (script << 1 | head) || !lvds_ver || 228 (lvds_ver >= 0x30 && script == LVDS_INIT)) 229 return 0; 230 231 if (!bios->fp.lvds_init_run) { 232 bios->fp.lvds_init_run = true; 233 call_lvds_script(dev, dcbent, head, LVDS_INIT, pxclk); 234 } 235 236 if (script == LVDS_PANEL_ON && bios->fp.reset_after_pclk_change) 237 call_lvds_script(dev, dcbent, head, LVDS_RESET, pxclk); 238 if (script == LVDS_RESET && bios->fp.power_off_for_reset) 239 call_lvds_script(dev, dcbent, head, LVDS_PANEL_OFF, pxclk); 240 241 NV_INFO(drm, "Calling LVDS script %d:\n", script); 242 243 /* don't let script change pll->head binding */ 244 sel_clk_binding = nvif_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000; 245 246 if (lvds_ver < 0x30) 247 ret = call_lvds_manufacturer_script(dev, dcbent, head, script); 248 else 249 ret = run_lvds_table(dev, dcbent, head, script, pxclk); 250 251 bios->fp.last_script_invoc = (script << 1 | head); 252 253 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000; 254 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding); 255 /* some scripts set a value in NV_PBUS_POWERCTRL_2 and break video overlay */ 256 nvif_wr32(device, NV_PBUS_POWERCTRL_2, 0); 257 258 return ret; 259} 260 261struct lvdstableheader { 262 uint8_t lvds_ver, headerlen, recordlen; 263}; 264 265static int parse_lvds_manufacturer_table_header(struct drm_device *dev, struct nvbios *bios, struct lvdstableheader *lth) 266{ 267 /* 268 * BMP version (0xa) LVDS table has a simple header of version and 269 * record length. The BIT LVDS table has the typical BIT table header: 270 * version byte, header length byte, record length byte, and a byte for 271 * the maximum number of records that can be held in the table. 272 */ 273 274 struct nouveau_drm *drm = nouveau_drm(dev); 275 uint8_t lvds_ver, headerlen, recordlen; 276 277 memset(lth, 0, sizeof(struct lvdstableheader)); 278 279 if (bios->fp.lvdsmanufacturerpointer == 0x0) { 280 NV_ERROR(drm, "Pointer to LVDS manufacturer table invalid\n"); 281 return -EINVAL; 282 } 283 284 lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer]; 285 286 switch (lvds_ver) { 287 case 0x0a: /* pre NV40 */ 288 headerlen = 2; 289 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 290 break; 291 case 0x30: /* NV4x */ 292 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 293 if (headerlen < 0x1f) { 294 NV_ERROR(drm, "LVDS table header not understood\n"); 295 return -EINVAL; 296 } 297 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2]; 298 break; 299 case 0x40: /* G80/G90 */ 300 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1]; 301 if (headerlen < 0x7) { 302 NV_ERROR(drm, "LVDS table header not understood\n"); 303 return -EINVAL; 304 } 305 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2]; 306 break; 307 default: 308 NV_ERROR(drm, 309 "LVDS table revision %d.%d not currently supported\n", 310 lvds_ver >> 4, lvds_ver & 0xf); 311 return -ENOSYS; 312 } 313 314 lth->lvds_ver = lvds_ver; 315 lth->headerlen = headerlen; 316 lth->recordlen = recordlen; 317 318 return 0; 319} 320 321static int 322get_fp_strap(struct drm_device *dev, struct nvbios *bios) 323{ 324 struct nouveau_drm *drm = nouveau_drm(dev); 325 struct nvif_object *device = &drm->client.device.object; 326 327 /* 328 * The fp strap is normally dictated by the "User Strap" in 329 * PEXTDEV_BOOT_0[20:16], but on BMP cards when bit 2 of the 330 * Internal_Flags struct at 0x48 is set, the user strap gets overriden 331 * by the PCI subsystem ID during POST, but not before the previous user 332 * strap has been committed to CR58 for CR57=0xf on head A, which may be 333 * read and used instead 334 */ 335 336 if (bios->major_version < 5 && bios->data[0x48] & 0x4) 337 return NVReadVgaCrtc5758(dev, 0, 0xf) & 0xf; 338 339 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_MAXWELL) 340 return nvif_rd32(device, 0x001800) & 0x0000000f; 341 else 342 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) 343 return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf; 344 else 345 return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf; 346} 347 348static int parse_fp_mode_table(struct drm_device *dev, struct nvbios *bios) 349{ 350 struct nouveau_drm *drm = nouveau_drm(dev); 351 uint8_t *fptable; 352 uint8_t fptable_ver, headerlen = 0, recordlen, fpentries = 0xf, fpindex; 353 int ret, ofs, fpstrapping; 354 struct lvdstableheader lth; 355 356 if (bios->fp.fptablepointer == 0x0) { 357 /* Most laptop cards lack an fp table. They use DDC. */ 358 NV_DEBUG(drm, "Pointer to flat panel table invalid\n"); 359 bios->digital_min_front_porch = 0x4b; 360 return 0; 361 } 362 363 fptable = &bios->data[bios->fp.fptablepointer]; 364 fptable_ver = fptable[0]; 365 366 switch (fptable_ver) { 367 /* 368 * BMP version 0x5.0x11 BIOSen have version 1 like tables, but no 369 * version field, and miss one of the spread spectrum/PWM bytes. 370 * This could affect early GF2Go parts (not seen any appropriate ROMs 371 * though). Here we assume that a version of 0x05 matches this case 372 * (combining with a BMP version check would be better), as the 373 * common case for the panel type field is 0x0005, and that is in 374 * fact what we are reading the first byte of. 375 */ 376 case 0x05: /* some NV10, 11, 15, 16 */ 377 recordlen = 42; 378 ofs = -1; 379 break; 380 case 0x10: /* some NV15/16, and NV11+ */ 381 recordlen = 44; 382 ofs = 0; 383 break; 384 case 0x20: /* NV40+ */ 385 headerlen = fptable[1]; 386 recordlen = fptable[2]; 387 fpentries = fptable[3]; 388 /* 389 * fptable[4] is the minimum 390 * RAMDAC_FP_HCRTC -> RAMDAC_FP_HSYNC_START gap 391 */ 392 bios->digital_min_front_porch = fptable[4]; 393 ofs = -7; 394 break; 395 default: 396 NV_ERROR(drm, 397 "FP table revision %d.%d not currently supported\n", 398 fptable_ver >> 4, fptable_ver & 0xf); 399 return -ENOSYS; 400 } 401 402 if (!bios->is_mobile) /* !mobile only needs digital_min_front_porch */ 403 return 0; 404 405 ret = parse_lvds_manufacturer_table_header(dev, bios, <h); 406 if (ret) 407 return ret; 408 409 if (lth.lvds_ver == 0x30 || lth.lvds_ver == 0x40) { 410 bios->fp.fpxlatetableptr = bios->fp.lvdsmanufacturerpointer + 411 lth.headerlen + 1; 412 bios->fp.xlatwidth = lth.recordlen; 413 } 414 if (bios->fp.fpxlatetableptr == 0x0) { 415 NV_ERROR(drm, "Pointer to flat panel xlat table invalid\n"); 416 return -EINVAL; 417 } 418 419 fpstrapping = get_fp_strap(dev, bios); 420 421 fpindex = bios->data[bios->fp.fpxlatetableptr + 422 fpstrapping * bios->fp.xlatwidth]; 423 424 if (fpindex > fpentries) { 425 NV_ERROR(drm, "Bad flat panel table index\n"); 426 return -ENOENT; 427 } 428 429 /* nv4x cards need both a strap value and fpindex of 0xf to use DDC */ 430 if (lth.lvds_ver > 0x10) 431 bios->fp_no_ddc = fpstrapping != 0xf || fpindex != 0xf; 432 433 /* 434 * If either the strap or xlated fpindex value are 0xf there is no 435 * panel using a strap-derived bios mode present. this condition 436 * includes, but is different from, the DDC panel indicator above 437 */ 438 if (fpstrapping == 0xf || fpindex == 0xf) 439 return 0; 440 441 bios->fp.mode_ptr = bios->fp.fptablepointer + headerlen + 442 recordlen * fpindex + ofs; 443 444 NV_INFO(drm, "BIOS FP mode: %dx%d (%dkHz pixel clock)\n", 445 ROM16(bios->data[bios->fp.mode_ptr + 11]) + 1, 446 ROM16(bios->data[bios->fp.mode_ptr + 25]) + 1, 447 ROM16(bios->data[bios->fp.mode_ptr + 7]) * 10); 448 449 return 0; 450} 451 452bool nouveau_bios_fp_mode(struct drm_device *dev, struct drm_display_mode *mode) 453{ 454 struct nouveau_drm *drm = nouveau_drm(dev); 455 struct nvbios *bios = &drm->vbios; 456 uint8_t *mode_entry = &bios->data[bios->fp.mode_ptr]; 457 458 if (!mode) /* just checking whether we can produce a mode */ 459 return bios->fp.mode_ptr; 460 461 memset(mode, 0, sizeof(struct drm_display_mode)); 462 /* 463 * For version 1.0 (version in byte 0): 464 * bytes 1-2 are "panel type", including bits on whether Colour/mono, 465 * single/dual link, and type (TFT etc.) 466 * bytes 3-6 are bits per colour in RGBX 467 */ 468 mode->clock = ROM16(mode_entry[7]) * 10; 469 /* bytes 9-10 is HActive */ 470 mode->hdisplay = ROM16(mode_entry[11]) + 1; 471 /* 472 * bytes 13-14 is HValid Start 473 * bytes 15-16 is HValid End 474 */ 475 mode->hsync_start = ROM16(mode_entry[17]) + 1; 476 mode->hsync_end = ROM16(mode_entry[19]) + 1; 477 mode->htotal = ROM16(mode_entry[21]) + 1; 478 /* bytes 23-24, 27-30 similarly, but vertical */ 479 mode->vdisplay = ROM16(mode_entry[25]) + 1; 480 mode->vsync_start = ROM16(mode_entry[31]) + 1; 481 mode->vsync_end = ROM16(mode_entry[33]) + 1; 482 mode->vtotal = ROM16(mode_entry[35]) + 1; 483 mode->flags |= (mode_entry[37] & 0x10) ? 484 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC; 485 mode->flags |= (mode_entry[37] & 0x1) ? 486 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC; 487 /* 488 * bytes 38-39 relate to spread spectrum settings 489 * bytes 40-43 are something to do with PWM 490 */ 491 492 mode->status = MODE_OK; 493 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 494 drm_mode_set_name(mode); 495 return bios->fp.mode_ptr; 496} 497 498int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, bool *if_is_24bit) 499{ 500 /* 501 * The LVDS table header is (mostly) described in 502 * parse_lvds_manufacturer_table_header(): the BIT header additionally 503 * contains the dual-link transition pxclk (in 10s kHz), at byte 5 - if 504 * straps are not being used for the panel, this specifies the frequency 505 * at which modes should be set up in the dual link style. 506 * 507 * Following the header, the BMP (ver 0xa) table has several records, 508 * indexed by a separate xlat table, indexed in turn by the fp strap in 509 * EXTDEV_BOOT. Each record had a config byte, followed by 6 script 510 * numbers for use by INIT_SUB which controlled panel init and power, 511 * and finally a dword of ms to sleep between power off and on 512 * operations. 513 * 514 * In the BIT versions, the table following the header serves as an 515 * integrated config and xlat table: the records in the table are 516 * indexed by the FP strap nibble in EXTDEV_BOOT, and each record has 517 * two bytes - the first as a config byte, the second for indexing the 518 * fp mode table pointed to by the BIT 'D' table 519 * 520 * DDC is not used until after card init, so selecting the correct table 521 * entry and setting the dual link flag for EDID equipped panels, 522 * requiring tests against the native-mode pixel clock, cannot be done 523 * until later, when this function should be called with non-zero pxclk 524 */ 525 struct nouveau_drm *drm = nouveau_drm(dev); 526 struct nvbios *bios = &drm->vbios; 527 int fpstrapping = get_fp_strap(dev, bios), lvdsmanufacturerindex = 0; 528 struct lvdstableheader lth; 529 uint16_t lvdsofs; 530 int ret, chip_version = bios->chip_version; 531 532 ret = parse_lvds_manufacturer_table_header(dev, bios, <h); 533 if (ret) 534 return ret; 535 536 switch (lth.lvds_ver) { 537 case 0x0a: /* pre NV40 */ 538 lvdsmanufacturerindex = bios->data[ 539 bios->fp.fpxlatemanufacturertableptr + 540 fpstrapping]; 541 542 /* we're done if this isn't the EDID panel case */ 543 if (!pxclk) 544 break; 545 546 if (chip_version < 0x25) { 547 /* nv17 behaviour 548 * 549 * It seems the old style lvds script pointer is reused 550 * to select 18/24 bit colour depth for EDID panels. 551 */ 552 lvdsmanufacturerindex = 553 (bios->legacy.lvds_single_a_script_ptr & 1) ? 554 2 : 0; 555 if (pxclk >= bios->fp.duallink_transition_clk) 556 lvdsmanufacturerindex++; 557 } else if (chip_version < 0x30) { 558 /* nv28 behaviour (off-chip encoder) 559 * 560 * nv28 does a complex dance of first using byte 121 of 561 * the EDID to choose the lvdsmanufacturerindex, then 562 * later attempting to match the EDID manufacturer and 563 * product IDs in a table (signature 'pidt' (panel id 564 * table?)), setting an lvdsmanufacturerindex of 0 and 565 * an fp strap of the match index (or 0xf if none) 566 */ 567 lvdsmanufacturerindex = 0; 568 } else { 569 /* nv31, nv34 behaviour */ 570 lvdsmanufacturerindex = 0; 571 if (pxclk >= bios->fp.duallink_transition_clk) 572 lvdsmanufacturerindex = 2; 573 if (pxclk >= 140000) 574 lvdsmanufacturerindex = 3; 575 } 576 577 /* 578 * nvidia set the high nibble of (cr57=f, cr58) to 579 * lvdsmanufacturerindex in this case; we don't 580 */ 581 break; 582 case 0x30: /* NV4x */ 583 case 0x40: /* G80/G90 */ 584 lvdsmanufacturerindex = fpstrapping; 585 break; 586 default: 587 NV_ERROR(drm, "LVDS table revision not currently supported\n"); 588 return -ENOSYS; 589 } 590 591 lvdsofs = bios->fp.xlated_entry = bios->fp.lvdsmanufacturerpointer + lth.headerlen + lth.recordlen * lvdsmanufacturerindex; 592 switch (lth.lvds_ver) { 593 case 0x0a: 594 bios->fp.power_off_for_reset = bios->data[lvdsofs] & 1; 595 bios->fp.reset_after_pclk_change = bios->data[lvdsofs] & 2; 596 bios->fp.dual_link = bios->data[lvdsofs] & 4; 597 bios->fp.link_c_increment = bios->data[lvdsofs] & 8; 598 *if_is_24bit = bios->data[lvdsofs] & 16; 599 break; 600 case 0x30: 601 case 0x40: 602 /* 603 * No sign of the "power off for reset" or "reset for panel 604 * on" bits, but it's safer to assume we should 605 */ 606 bios->fp.power_off_for_reset = true; 607 bios->fp.reset_after_pclk_change = true; 608 609 /* 610 * It's ok lvdsofs is wrong for nv4x edid case; dual_link is 611 * over-written, and if_is_24bit isn't used 612 */ 613 bios->fp.dual_link = bios->data[lvdsofs] & 1; 614 bios->fp.if_is_24bit = bios->data[lvdsofs] & 2; 615 bios->fp.strapless_is_24bit = bios->data[bios->fp.lvdsmanufacturerpointer + 4]; 616 bios->fp.duallink_transition_clk = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 5]) * 10; 617 break; 618 } 619 620 /* set dual_link flag for EDID case */ 621 if (pxclk && (chip_version < 0x25 || chip_version > 0x28)) 622 bios->fp.dual_link = (pxclk >= bios->fp.duallink_transition_clk); 623 624 *dl = bios->fp.dual_link; 625 626 return 0; 627} 628 629int run_tmds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, int pxclk) 630{ 631 /* 632 * the pxclk parameter is in kHz 633 * 634 * This runs the TMDS regs setting code found on BIT bios cards 635 * 636 * For ffs(or) == 1 use the first table, for ffs(or) == 2 and 637 * ffs(or) == 3, use the second. 638 */ 639 640 struct nouveau_drm *drm = nouveau_drm(dev); 641 struct nvif_object *device = &drm->client.device.object; 642 struct nvbios *bios = &drm->vbios; 643 int cv = bios->chip_version; 644 uint16_t clktable = 0, scriptptr; 645 uint32_t sel_clk_binding, sel_clk; 646 647 /* pre-nv17 off-chip tmds uses scripts, post nv17 doesn't */ 648 if (cv >= 0x17 && cv != 0x1a && cv != 0x20 && 649 dcbent->location != DCB_LOC_ON_CHIP) 650 return 0; 651 652 switch (ffs(dcbent->or)) { 653 case 1: 654 clktable = bios->tmds.output0_script_ptr; 655 break; 656 case 2: 657 case 3: 658 clktable = bios->tmds.output1_script_ptr; 659 break; 660 } 661 662 if (!clktable) { 663 NV_ERROR(drm, "Pixel clock comparison table not found\n"); 664 return -EINVAL; 665 } 666 667 scriptptr = clkcmptable(bios, clktable, pxclk); 668 669 if (!scriptptr) { 670 NV_ERROR(drm, "TMDS output init script not found\n"); 671 return -ENOENT; 672 } 673 674 /* don't let script change pll->head binding */ 675 sel_clk_binding = nvif_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000; 676 run_digital_op_script(dev, scriptptr, dcbent, head, pxclk >= 165000); 677 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000; 678 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding); 679 680 return 0; 681} 682 683static void parse_script_table_pointers(struct nvbios *bios, uint16_t offset) 684{ 685 /* 686 * Parses the init table segment for pointers used in script execution. 687 * 688 * offset + 0 (16 bits): init script tables pointer 689 * offset + 2 (16 bits): macro index table pointer 690 * offset + 4 (16 bits): macro table pointer 691 * offset + 6 (16 bits): condition table pointer 692 * offset + 8 (16 bits): io condition table pointer 693 * offset + 10 (16 bits): io flag condition table pointer 694 * offset + 12 (16 bits): init function table pointer 695 */ 696 697 bios->init_script_tbls_ptr = ROM16(bios->data[offset]); 698} 699 700static int parse_bit_A_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 701{ 702 /* 703 * Parses the load detect values for g80 cards. 704 * 705 * offset + 0 (16 bits): loadval table pointer 706 */ 707 708 struct nouveau_drm *drm = nouveau_drm(dev); 709 uint16_t load_table_ptr; 710 uint8_t version, headerlen, entrylen, num_entries; 711 712 if (bitentry->length != 3) { 713 NV_ERROR(drm, "Do not understand BIT A table\n"); 714 return -EINVAL; 715 } 716 717 load_table_ptr = ROM16(bios->data[bitentry->offset]); 718 719 if (load_table_ptr == 0x0) { 720 NV_DEBUG(drm, "Pointer to BIT loadval table invalid\n"); 721 return -EINVAL; 722 } 723 724 version = bios->data[load_table_ptr]; 725 726 if (version != 0x10) { 727 NV_ERROR(drm, "BIT loadval table version %d.%d not supported\n", 728 version >> 4, version & 0xF); 729 return -ENOSYS; 730 } 731 732 headerlen = bios->data[load_table_ptr + 1]; 733 entrylen = bios->data[load_table_ptr + 2]; 734 num_entries = bios->data[load_table_ptr + 3]; 735 736 if (headerlen != 4 || entrylen != 4 || num_entries != 2) { 737 NV_ERROR(drm, "Do not understand BIT loadval table\n"); 738 return -EINVAL; 739 } 740 741 /* First entry is normal dac, 2nd tv-out perhaps? */ 742 bios->dactestval = ROM32(bios->data[load_table_ptr + headerlen]) & 0x3ff; 743 744 return 0; 745} 746 747static int parse_bit_display_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 748{ 749 /* 750 * Parses the flat panel table segment that the bit entry points to. 751 * Starting at bitentry->offset: 752 * 753 * offset + 0 (16 bits): ??? table pointer - seems to have 18 byte 754 * records beginning with a freq. 755 * offset + 2 (16 bits): mode table pointer 756 */ 757 struct nouveau_drm *drm = nouveau_drm(dev); 758 759 if (bitentry->length != 4) { 760 NV_ERROR(drm, "Do not understand BIT display table\n"); 761 return -EINVAL; 762 } 763 764 bios->fp.fptablepointer = ROM16(bios->data[bitentry->offset + 2]); 765 766 return 0; 767} 768 769static int parse_bit_init_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 770{ 771 /* 772 * Parses the init table segment that the bit entry points to. 773 * 774 * See parse_script_table_pointers for layout 775 */ 776 struct nouveau_drm *drm = nouveau_drm(dev); 777 778 if (bitentry->length < 14) { 779 NV_ERROR(drm, "Do not understand init table\n"); 780 return -EINVAL; 781 } 782 783 parse_script_table_pointers(bios, bitentry->offset); 784 return 0; 785} 786 787static int parse_bit_i_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 788{ 789 /* 790 * BIT 'i' (info?) table 791 * 792 * offset + 0 (32 bits): BIOS version dword (as in B table) 793 * offset + 5 (8 bits): BIOS feature byte (same as for BMP?) 794 * offset + 13 (16 bits): pointer to table containing DAC load 795 * detection comparison values 796 * 797 * There's other things in the table, purpose unknown 798 */ 799 800 struct nouveau_drm *drm = nouveau_drm(dev); 801 uint16_t daccmpoffset; 802 uint8_t dacver, dacheaderlen; 803 804 if (bitentry->length < 6) { 805 NV_ERROR(drm, "BIT i table too short for needed information\n"); 806 return -EINVAL; 807 } 808 809 /* 810 * bit 4 seems to indicate a mobile bios (doesn't suffer from BMP's 811 * Quadro identity crisis), other bits possibly as for BMP feature byte 812 */ 813 bios->feature_byte = bios->data[bitentry->offset + 5]; 814 bios->is_mobile = bios->feature_byte & FEATURE_MOBILE; 815 816 if (bitentry->length < 15) { 817 NV_WARN(drm, "BIT i table not long enough for DAC load " 818 "detection comparison table\n"); 819 return -EINVAL; 820 } 821 822 daccmpoffset = ROM16(bios->data[bitentry->offset + 13]); 823 824 /* doesn't exist on g80 */ 825 if (!daccmpoffset) 826 return 0; 827 828 /* 829 * The first value in the table, following the header, is the 830 * comparison value, the second entry is a comparison value for 831 * TV load detection. 832 */ 833 834 dacver = bios->data[daccmpoffset]; 835 dacheaderlen = bios->data[daccmpoffset + 1]; 836 837 if (dacver != 0x00 && dacver != 0x10) { 838 NV_WARN(drm, "DAC load detection comparison table version " 839 "%d.%d not known\n", dacver >> 4, dacver & 0xf); 840 return -ENOSYS; 841 } 842 843 bios->dactestval = ROM32(bios->data[daccmpoffset + dacheaderlen]); 844 bios->tvdactestval = ROM32(bios->data[daccmpoffset + dacheaderlen + 4]); 845 846 return 0; 847} 848 849static int parse_bit_lvds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 850{ 851 /* 852 * Parses the LVDS table segment that the bit entry points to. 853 * Starting at bitentry->offset: 854 * 855 * offset + 0 (16 bits): LVDS strap xlate table pointer 856 */ 857 858 struct nouveau_drm *drm = nouveau_drm(dev); 859 860 if (bitentry->length != 2) { 861 NV_ERROR(drm, "Do not understand BIT LVDS table\n"); 862 return -EINVAL; 863 } 864 865 /* 866 * No idea if it's still called the LVDS manufacturer table, but 867 * the concept's close enough. 868 */ 869 bios->fp.lvdsmanufacturerpointer = ROM16(bios->data[bitentry->offset]); 870 871 return 0; 872} 873 874static int 875parse_bit_M_tbl_entry(struct drm_device *dev, struct nvbios *bios, 876 struct bit_entry *bitentry) 877{ 878 /* 879 * offset + 2 (8 bits): number of options in an 880 * INIT_RAM_RESTRICT_ZM_REG_GROUP opcode option set 881 * offset + 3 (16 bits): pointer to strap xlate table for RAM 882 * restrict option selection 883 * 884 * There's a bunch of bits in this table other than the RAM restrict 885 * stuff that we don't use - their use currently unknown 886 */ 887 888 /* 889 * Older bios versions don't have a sufficiently long table for 890 * what we want 891 */ 892 if (bitentry->length < 0x5) 893 return 0; 894 895 if (bitentry->version < 2) { 896 bios->ram_restrict_group_count = bios->data[bitentry->offset + 2]; 897 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 3]); 898 } else { 899 bios->ram_restrict_group_count = bios->data[bitentry->offset + 0]; 900 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 1]); 901 } 902 903 return 0; 904} 905 906static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry) 907{ 908 /* 909 * Parses the pointer to the TMDS table 910 * 911 * Starting at bitentry->offset: 912 * 913 * offset + 0 (16 bits): TMDS table pointer 914 * 915 * The TMDS table is typically found just before the DCB table, with a 916 * characteristic signature of 0x11,0x13 (1.1 being version, 0x13 being 917 * length?) 918 * 919 * At offset +7 is a pointer to a script, which I don't know how to 920 * run yet. 921 * At offset +9 is a pointer to another script, likewise 922 * Offset +11 has a pointer to a table where the first word is a pxclk 923 * frequency and the second word a pointer to a script, which should be 924 * run if the comparison pxclk frequency is less than the pxclk desired. 925 * This repeats for decreasing comparison frequencies 926 * Offset +13 has a pointer to a similar table 927 * The selection of table (and possibly +7/+9 script) is dictated by 928 * "or" from the DCB. 929 */ 930 931 struct nouveau_drm *drm = nouveau_drm(dev); 932 uint16_t tmdstableptr, script1, script2; 933 934 if (bitentry->length != 2) { 935 NV_ERROR(drm, "Do not understand BIT TMDS table\n"); 936 return -EINVAL; 937 } 938 939 tmdstableptr = ROM16(bios->data[bitentry->offset]); 940 if (!tmdstableptr) { 941 NV_INFO(drm, "Pointer to TMDS table not found\n"); 942 return -EINVAL; 943 } 944 945 NV_INFO(drm, "TMDS table version %d.%d\n", 946 bios->data[tmdstableptr] >> 4, bios->data[tmdstableptr] & 0xf); 947 948 /* nv50+ has v2.0, but we don't parse it atm */ 949 if (bios->data[tmdstableptr] != 0x11) 950 return -ENOSYS; 951 952 /* 953 * These two scripts are odd: they don't seem to get run even when 954 * they are not stubbed. 955 */ 956 script1 = ROM16(bios->data[tmdstableptr + 7]); 957 script2 = ROM16(bios->data[tmdstableptr + 9]); 958 if (bios->data[script1] != 'q' || bios->data[script2] != 'q') 959 NV_WARN(drm, "TMDS table script pointers not stubbed\n"); 960 961 bios->tmds.output0_script_ptr = ROM16(bios->data[tmdstableptr + 11]); 962 bios->tmds.output1_script_ptr = ROM16(bios->data[tmdstableptr + 13]); 963 964 return 0; 965} 966 967struct bit_table { 968 const char id; 969 int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *); 970}; 971 972#define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry }) 973 974int 975bit_table(struct drm_device *dev, u8 id, struct bit_entry *bit) 976{ 977 struct nouveau_drm *drm = nouveau_drm(dev); 978 struct nvbios *bios = &drm->vbios; 979 u8 entries, *entry; 980 981 if (bios->type != NVBIOS_BIT) 982 return -ENODEV; 983 984 entries = bios->data[bios->offset + 10]; 985 entry = &bios->data[bios->offset + 12]; 986 while (entries--) { 987 if (entry[0] == id) { 988 bit->id = entry[0]; 989 bit->version = entry[1]; 990 bit->length = ROM16(entry[2]); 991 bit->offset = ROM16(entry[4]); 992 bit->data = ROMPTR(dev, entry[4]); 993 return 0; 994 } 995 996 entry += bios->data[bios->offset + 9]; 997 } 998 999 return -ENOENT; 1000} 1001 1002static int 1003parse_bit_table(struct nvbios *bios, const uint16_t bitoffset, 1004 struct bit_table *table) 1005{ 1006 struct drm_device *dev = bios->dev; 1007 struct nouveau_drm *drm = nouveau_drm(dev); 1008 struct bit_entry bitentry; 1009 1010 if (bit_table(dev, table->id, &bitentry) == 0) 1011 return table->parse_fn(dev, bios, &bitentry); 1012 1013 NV_INFO(drm, "BIT table '%c' not found\n", table->id); 1014 return -ENOSYS; 1015} 1016 1017static int 1018parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset) 1019{ 1020 int ret; 1021 1022 /* 1023 * The only restriction on parsing order currently is having 'i' first 1024 * for use of bios->*_version or bios->feature_byte while parsing; 1025 * functions shouldn't be actually *doing* anything apart from pulling 1026 * data from the image into the bios struct, thus no interdependencies 1027 */ 1028 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('i', i)); 1029 if (ret) /* info? */ 1030 return ret; 1031 if (bios->major_version >= 0x60) /* g80+ */ 1032 parse_bit_table(bios, bitoffset, &BIT_TABLE('A', A)); 1033 parse_bit_table(bios, bitoffset, &BIT_TABLE('D', display)); 1034 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('I', init)); 1035 if (ret) 1036 return ret; 1037 parse_bit_table(bios, bitoffset, &BIT_TABLE('M', M)); /* memory? */ 1038 parse_bit_table(bios, bitoffset, &BIT_TABLE('L', lvds)); 1039 parse_bit_table(bios, bitoffset, &BIT_TABLE('T', tmds)); 1040 1041 return 0; 1042} 1043 1044static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsigned int offset) 1045{ 1046 /* 1047 * Parses the BMP structure for useful things, but does not act on them 1048 * 1049 * offset + 5: BMP major version 1050 * offset + 6: BMP minor version 1051 * offset + 9: BMP feature byte 1052 * offset + 10: BCD encoded BIOS version 1053 * 1054 * offset + 18: init script table pointer (for bios versions < 5.10h) 1055 * offset + 20: extra init script table pointer (for bios 1056 * versions < 5.10h) 1057 * 1058 * offset + 24: memory init table pointer (used on early bios versions) 1059 * offset + 26: SDR memory sequencing setup data table 1060 * offset + 28: DDR memory sequencing setup data table 1061 * 1062 * offset + 54: index of I2C CRTC pair to use for CRT output 1063 * offset + 55: index of I2C CRTC pair to use for TV output 1064 * offset + 56: index of I2C CRTC pair to use for flat panel output 1065 * offset + 58: write CRTC index for I2C pair 0 1066 * offset + 59: read CRTC index for I2C pair 0 1067 * offset + 60: write CRTC index for I2C pair 1 1068 * offset + 61: read CRTC index for I2C pair 1 1069 * 1070 * offset + 67: maximum internal PLL frequency (single stage PLL) 1071 * offset + 71: minimum internal PLL frequency (single stage PLL) 1072 * 1073 * offset + 75: script table pointers, as described in 1074 * parse_script_table_pointers 1075 * 1076 * offset + 89: TMDS single link output A table pointer 1077 * offset + 91: TMDS single link output B table pointer 1078 * offset + 95: LVDS single link output A table pointer 1079 * offset + 105: flat panel timings table pointer 1080 * offset + 107: flat panel strapping translation table pointer 1081 * offset + 117: LVDS manufacturer panel config table pointer 1082 * offset + 119: LVDS manufacturer strapping translation table pointer 1083 * 1084 * offset + 142: PLL limits table pointer 1085 * 1086 * offset + 156: minimum pixel clock for LVDS dual link 1087 */ 1088 1089 struct nouveau_drm *drm = nouveau_drm(dev); 1090 uint8_t *bmp = &bios->data[offset], bmp_version_major, bmp_version_minor; 1091 uint16_t bmplength; 1092 uint16_t legacy_scripts_offset, legacy_i2c_offset; 1093 1094 /* load needed defaults in case we can't parse this info */ 1095 bios->digital_min_front_porch = 0x4b; 1096 bios->fmaxvco = 256000; 1097 bios->fminvco = 128000; 1098 bios->fp.duallink_transition_clk = 90000; 1099 1100 bmp_version_major = bmp[5]; 1101 bmp_version_minor = bmp[6]; 1102 1103 NV_INFO(drm, "BMP version %d.%d\n", 1104 bmp_version_major, bmp_version_minor); 1105 1106 /* 1107 * Make sure that 0x36 is blank and can't be mistaken for a DCB 1108 * pointer on early versions 1109 */ 1110 if (bmp_version_major < 5) 1111 *(uint16_t *)&bios->data[0x36] = 0; 1112 1113 /* 1114 * Seems that the minor version was 1 for all major versions prior 1115 * to 5. Version 6 could theoretically exist, but I suspect BIT 1116 * happened instead. 1117 */ 1118 if ((bmp_version_major < 5 && bmp_version_minor != 1) || bmp_version_major > 5) { 1119 NV_ERROR(drm, "You have an unsupported BMP version. " 1120 "Please send in your bios\n"); 1121 return -ENOSYS; 1122 } 1123 1124 if (bmp_version_major == 0) 1125 /* nothing that's currently useful in this version */ 1126 return 0; 1127 else if (bmp_version_major == 1) 1128 bmplength = 44; /* exact for 1.01 */ 1129 else if (bmp_version_major == 2) 1130 bmplength = 48; /* exact for 2.01 */ 1131 else if (bmp_version_major == 3) 1132 bmplength = 54; 1133 /* guessed - mem init tables added in this version */ 1134 else if (bmp_version_major == 4 || bmp_version_minor < 0x1) 1135 /* don't know if 5.0 exists... */ 1136 bmplength = 62; 1137 /* guessed - BMP I2C indices added in version 4*/ 1138 else if (bmp_version_minor < 0x6) 1139 bmplength = 67; /* exact for 5.01 */ 1140 else if (bmp_version_minor < 0x10) 1141 bmplength = 75; /* exact for 5.06 */ 1142 else if (bmp_version_minor == 0x10) 1143 bmplength = 89; /* exact for 5.10h */ 1144 else if (bmp_version_minor < 0x14) 1145 bmplength = 118; /* exact for 5.11h */ 1146 else if (bmp_version_minor < 0x24) 1147 /* 1148 * Not sure of version where pll limits came in; 1149 * certainly exist by 0x24 though. 1150 */ 1151 /* length not exact: this is long enough to get lvds members */ 1152 bmplength = 123; 1153 else if (bmp_version_minor < 0x27) 1154 /* 1155 * Length not exact: this is long enough to get pll limit 1156 * member 1157 */ 1158 bmplength = 144; 1159 else 1160 /* 1161 * Length not exact: this is long enough to get dual link 1162 * transition clock. 1163 */ 1164 bmplength = 158; 1165 1166 /* checksum */ 1167 if (nv_cksum(bmp, 8)) { 1168 NV_ERROR(drm, "Bad BMP checksum\n"); 1169 return -EINVAL; 1170 } 1171 1172 /* 1173 * Bit 4 seems to indicate either a mobile bios or a quadro card -- 1174 * mobile behaviour consistent (nv11+), quadro only seen nv18gl-nv36gl 1175 * (not nv10gl), bit 5 that the flat panel tables are present, and 1176 * bit 6 a tv bios. 1177 */ 1178 bios->feature_byte = bmp[9]; 1179 1180 if (bmp_version_major < 5 || bmp_version_minor < 0x10) 1181 bios->old_style_init = true; 1182 legacy_scripts_offset = 18; 1183 if (bmp_version_major < 2) 1184 legacy_scripts_offset -= 4; 1185 bios->init_script_tbls_ptr = ROM16(bmp[legacy_scripts_offset]); 1186 bios->extra_init_script_tbl_ptr = ROM16(bmp[legacy_scripts_offset + 2]); 1187 1188 if (bmp_version_major > 2) { /* appears in BMP 3 */ 1189 bios->legacy.mem_init_tbl_ptr = ROM16(bmp[24]); 1190 bios->legacy.sdr_seq_tbl_ptr = ROM16(bmp[26]); 1191 bios->legacy.ddr_seq_tbl_ptr = ROM16(bmp[28]); 1192 } 1193 1194 legacy_i2c_offset = 0x48; /* BMP version 2 & 3 */ 1195 if (bmplength > 61) 1196 legacy_i2c_offset = offset + 54; 1197 bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset]; 1198 bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1]; 1199 bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2]; 1200 1201 if (bmplength > 74) { 1202 bios->fmaxvco = ROM32(bmp[67]); 1203 bios->fminvco = ROM32(bmp[71]); 1204 } 1205 if (bmplength > 88) 1206 parse_script_table_pointers(bios, offset + 75); 1207 if (bmplength > 94) { 1208 bios->tmds.output0_script_ptr = ROM16(bmp[89]); 1209 bios->tmds.output1_script_ptr = ROM16(bmp[91]); 1210 /* 1211 * Never observed in use with lvds scripts, but is reused for 1212 * 18/24 bit panel interface default for EDID equipped panels 1213 * (if_is_24bit not set directly to avoid any oscillation). 1214 */ 1215 bios->legacy.lvds_single_a_script_ptr = ROM16(bmp[95]); 1216 } 1217 if (bmplength > 108) { 1218 bios->fp.fptablepointer = ROM16(bmp[105]); 1219 bios->fp.fpxlatetableptr = ROM16(bmp[107]); 1220 bios->fp.xlatwidth = 1; 1221 } 1222 if (bmplength > 120) { 1223 bios->fp.lvdsmanufacturerpointer = ROM16(bmp[117]); 1224 bios->fp.fpxlatemanufacturertableptr = ROM16(bmp[119]); 1225 } 1226#if 0 1227 if (bmplength > 143) 1228 bios->pll_limit_tbl_ptr = ROM16(bmp[142]); 1229#endif 1230 1231 if (bmplength > 157) 1232 bios->fp.duallink_transition_clk = ROM16(bmp[156]) * 10; 1233 1234 return 0; 1235} 1236 1237static uint16_t findstr(uint8_t *data, int n, const uint8_t *str, int len) 1238{ 1239 int i, j; 1240 1241 for (i = 0; i <= (n - len); i++) { 1242 for (j = 0; j < len; j++) 1243 if (data[i + j] != str[j]) 1244 break; 1245 if (j == len) 1246 return i; 1247 } 1248 1249 return 0; 1250} 1251 1252void * 1253olddcb_table(struct drm_device *dev) 1254{ 1255 struct nouveau_drm *drm = nouveau_drm(dev); 1256 u8 *dcb = NULL; 1257 1258 if (drm->client.device.info.family > NV_DEVICE_INFO_V0_TNT) 1259 dcb = ROMPTR(dev, drm->vbios.data[0x36]); 1260 if (!dcb) { 1261 NV_WARN(drm, "No DCB data found in VBIOS\n"); 1262 return NULL; 1263 } 1264 1265 if (dcb[0] >= 0x42) { 1266 NV_WARN(drm, "DCB version 0x%02x unknown\n", dcb[0]); 1267 return NULL; 1268 } else 1269 if (dcb[0] >= 0x30) { 1270 if (ROM32(dcb[6]) == 0x4edcbdcb) 1271 return dcb; 1272 } else 1273 if (dcb[0] >= 0x20) { 1274 if (ROM32(dcb[4]) == 0x4edcbdcb) 1275 return dcb; 1276 } else 1277 if (dcb[0] >= 0x15) { 1278 if (!memcmp(&dcb[-7], "DEV_REC", 7)) 1279 return dcb; 1280 } else { 1281 /* 1282 * v1.4 (some NV15/16, NV11+) seems the same as v1.5, but 1283 * always has the same single (crt) entry, even when tv-out 1284 * present, so the conclusion is this version cannot really 1285 * be used. 1286 * 1287 * v1.2 tables (some NV6/10, and NV15+) normally have the 1288 * same 5 entries, which are not specific to the card and so 1289 * no use. 1290 * 1291 * v1.2 does have an I2C table that read_dcb_i2c_table can 1292 * handle, but cards exist (nv11 in #14821) with a bad i2c 1293 * table pointer, so use the indices parsed in 1294 * parse_bmp_structure. 1295 * 1296 * v1.1 (NV5+, maybe some NV4) is entirely unhelpful 1297 */ 1298 NV_WARN(drm, "No useful DCB data in VBIOS\n"); 1299 return NULL; 1300 } 1301 1302 NV_WARN(drm, "DCB header validation failed\n"); 1303 return NULL; 1304} 1305 1306void * 1307olddcb_outp(struct drm_device *dev, u8 idx) 1308{ 1309 u8 *dcb = olddcb_table(dev); 1310 if (dcb && dcb[0] >= 0x30) { 1311 if (idx < dcb[2]) 1312 return dcb + dcb[1] + (idx * dcb[3]); 1313 } else 1314 if (dcb && dcb[0] >= 0x20) { 1315 u8 *i2c = ROMPTR(dev, dcb[2]); 1316 u8 *ent = dcb + 8 + (idx * 8); 1317 if (i2c && ent < i2c) 1318 return ent; 1319 } else 1320 if (dcb && dcb[0] >= 0x15) { 1321 u8 *i2c = ROMPTR(dev, dcb[2]); 1322 u8 *ent = dcb + 4 + (idx * 10); 1323 if (i2c && ent < i2c) 1324 return ent; 1325 } 1326 1327 return NULL; 1328} 1329 1330int 1331olddcb_outp_foreach(struct drm_device *dev, void *data, 1332 int (*exec)(struct drm_device *, void *, int idx, u8 *outp)) 1333{ 1334 int ret, idx = -1; 1335 u8 *outp = NULL; 1336 while ((outp = olddcb_outp(dev, ++idx))) { 1337 if (ROM32(outp[0]) == 0x00000000) 1338 break; /* seen on an NV11 with DCB v1.5 */ 1339 if (ROM32(outp[0]) == 0xffffffff) 1340 break; /* seen on an NV17 with DCB v2.0 */ 1341 1342 if ((outp[0] & 0x0f) == DCB_OUTPUT_UNUSED) 1343 continue; 1344 if ((outp[0] & 0x0f) == DCB_OUTPUT_EOL) 1345 break; 1346 1347 ret = exec(dev, data, idx, outp); 1348 if (ret) 1349 return ret; 1350 } 1351 1352 return 0; 1353} 1354 1355u8 * 1356olddcb_conntab(struct drm_device *dev) 1357{ 1358 u8 *dcb = olddcb_table(dev); 1359 if (dcb && dcb[0] >= 0x30 && dcb[1] >= 0x16) { 1360 u8 *conntab = ROMPTR(dev, dcb[0x14]); 1361 if (conntab && conntab[0] >= 0x30 && conntab[0] <= 0x40) 1362 return conntab; 1363 } 1364 return NULL; 1365} 1366 1367u8 * 1368olddcb_conn(struct drm_device *dev, u8 idx) 1369{ 1370 u8 *conntab = olddcb_conntab(dev); 1371 if (conntab && idx < conntab[2]) 1372 return conntab + conntab[1] + (idx * conntab[3]); 1373 return NULL; 1374} 1375 1376static struct dcb_output *new_dcb_entry(struct dcb_table *dcb) 1377{ 1378 struct dcb_output *entry = &dcb->entry[dcb->entries]; 1379 1380 memset(entry, 0, sizeof(struct dcb_output)); 1381 entry->index = dcb->entries++; 1382 1383 return entry; 1384} 1385 1386static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c, 1387 int heads, int or) 1388{ 1389 struct dcb_output *entry = new_dcb_entry(dcb); 1390 1391 entry->type = type; 1392 entry->i2c_index = i2c; 1393 entry->heads = heads; 1394 if (type != DCB_OUTPUT_ANALOG) 1395 entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */ 1396 entry->or = or; 1397} 1398 1399static bool 1400parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb, 1401 uint32_t conn, uint32_t conf, struct dcb_output *entry) 1402{ 1403 struct nouveau_drm *drm = nouveau_drm(dev); 1404 int link = 0; 1405 1406 entry->type = conn & 0xf; 1407 entry->i2c_index = (conn >> 4) & 0xf; 1408 entry->heads = (conn >> 8) & 0xf; 1409 entry->connector = (conn >> 12) & 0xf; 1410 entry->bus = (conn >> 16) & 0xf; 1411 entry->location = (conn >> 20) & 0x3; 1412 entry->or = (conn >> 24) & 0xf; 1413 1414 switch (entry->type) { 1415 case DCB_OUTPUT_ANALOG: 1416 /* 1417 * Although the rest of a CRT conf dword is usually 1418 * zeros, mac biosen have stuff there so we must mask 1419 */ 1420 entry->crtconf.maxfreq = (dcb->version < 0x30) ? 1421 (conf & 0xffff) * 10 : 1422 (conf & 0xff) * 10000; 1423 break; 1424 case DCB_OUTPUT_LVDS: 1425 { 1426 uint32_t mask; 1427 if (conf & 0x1) 1428 entry->lvdsconf.use_straps_for_mode = true; 1429 if (dcb->version < 0x22) { 1430 mask = ~0xd; 1431 /* 1432 * The laptop in bug 14567 lies and claims to not use 1433 * straps when it does, so assume all DCB 2.0 laptops 1434 * use straps, until a broken EDID using one is produced 1435 */ 1436 entry->lvdsconf.use_straps_for_mode = true; 1437 /* 1438 * Both 0x4 and 0x8 show up in v2.0 tables; assume they 1439 * mean the same thing (probably wrong, but might work) 1440 */ 1441 if (conf & 0x4 || conf & 0x8) 1442 entry->lvdsconf.use_power_scripts = true; 1443 } else { 1444 mask = ~0x7; 1445 if (conf & 0x2) 1446 entry->lvdsconf.use_acpi_for_edid = true; 1447 if (conf & 0x4) 1448 entry->lvdsconf.use_power_scripts = true; 1449 entry->lvdsconf.sor.link = (conf & 0x00000030) >> 4; 1450 link = entry->lvdsconf.sor.link; 1451 } 1452 if (conf & mask) { 1453 /* 1454 * Until we even try to use these on G8x, it's 1455 * useless reporting unknown bits. They all are. 1456 */ 1457 if (dcb->version >= 0x40) 1458 break; 1459 1460 NV_ERROR(drm, "Unknown LVDS configuration bits, " 1461 "please report\n"); 1462 } 1463 break; 1464 } 1465 case DCB_OUTPUT_TV: 1466 { 1467 if (dcb->version >= 0x30) 1468 entry->tvconf.has_component_output = conf & (0x8 << 4); 1469 else 1470 entry->tvconf.has_component_output = false; 1471 1472 break; 1473 } 1474 case DCB_OUTPUT_DP: 1475 entry->dpconf.sor.link = (conf & 0x00000030) >> 4; 1476 entry->extdev = (conf & 0x0000ff00) >> 8; 1477 switch ((conf & 0x00e00000) >> 21) { 1478 case 0: 1479 entry->dpconf.link_bw = 162000; 1480 break; 1481 case 1: 1482 entry->dpconf.link_bw = 270000; 1483 break; 1484 case 2: 1485 entry->dpconf.link_bw = 540000; 1486 break; 1487 case 3: 1488 default: 1489 entry->dpconf.link_bw = 810000; 1490 break; 1491 } 1492 switch ((conf & 0x0f000000) >> 24) { 1493 case 0xf: 1494 case 0x4: 1495 entry->dpconf.link_nr = 4; 1496 break; 1497 case 0x3: 1498 case 0x2: 1499 entry->dpconf.link_nr = 2; 1500 break; 1501 default: 1502 entry->dpconf.link_nr = 1; 1503 break; 1504 } 1505 link = entry->dpconf.sor.link; 1506 break; 1507 case DCB_OUTPUT_TMDS: 1508 if (dcb->version >= 0x40) { 1509 entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4; 1510 entry->extdev = (conf & 0x0000ff00) >> 8; 1511 link = entry->tmdsconf.sor.link; 1512 } 1513 else if (dcb->version >= 0x30) 1514 entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8; 1515 else if (dcb->version >= 0x22) 1516 entry->tmdsconf.slave_addr = (conf & 0x00000070) >> 4; 1517 break; 1518 case DCB_OUTPUT_EOL: 1519 /* weird g80 mobile type that "nv" treats as a terminator */ 1520 dcb->entries--; 1521 return false; 1522 default: 1523 break; 1524 } 1525 1526 if (dcb->version < 0x40) { 1527 /* Normal entries consist of a single bit, but dual link has 1528 * the next most significant bit set too 1529 */ 1530 entry->duallink_possible = 1531 ((1 << (ffs(entry->or) - 1)) * 3 == entry->or); 1532 } else { 1533 entry->duallink_possible = (entry->sorconf.link == 3); 1534 } 1535 1536 /* unsure what DCB version introduces this, 3.0? */ 1537 if (conf & 0x100000) 1538 entry->i2c_upper_default = true; 1539 1540 entry->hasht = (entry->extdev << 8) | (entry->location << 4) | 1541 entry->type; 1542 entry->hashm = (entry->heads << 8) | (link << 6) | entry->or; 1543 return true; 1544} 1545 1546static bool 1547parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb, 1548 uint32_t conn, uint32_t conf, struct dcb_output *entry) 1549{ 1550 struct nouveau_drm *drm = nouveau_drm(dev); 1551 1552 switch (conn & 0x0000000f) { 1553 case 0: 1554 entry->type = DCB_OUTPUT_ANALOG; 1555 break; 1556 case 1: 1557 entry->type = DCB_OUTPUT_TV; 1558 break; 1559 case 2: 1560 case 4: 1561 if (conn & 0x10) 1562 entry->type = DCB_OUTPUT_LVDS; 1563 else 1564 entry->type = DCB_OUTPUT_TMDS; 1565 break; 1566 case 3: 1567 entry->type = DCB_OUTPUT_LVDS; 1568 break; 1569 default: 1570 NV_ERROR(drm, "Unknown DCB type %d\n", conn & 0x0000000f); 1571 return false; 1572 } 1573 1574 entry->i2c_index = (conn & 0x0003c000) >> 14; 1575 entry->heads = ((conn & 0x001c0000) >> 18) + 1; 1576 entry->or = entry->heads; /* same as heads, hopefully safe enough */ 1577 entry->location = (conn & 0x01e00000) >> 21; 1578 entry->bus = (conn & 0x0e000000) >> 25; 1579 entry->duallink_possible = false; 1580 1581 switch (entry->type) { 1582 case DCB_OUTPUT_ANALOG: 1583 entry->crtconf.maxfreq = (conf & 0xffff) * 10; 1584 break; 1585 case DCB_OUTPUT_TV: 1586 entry->tvconf.has_component_output = false; 1587 break; 1588 case DCB_OUTPUT_LVDS: 1589 if ((conn & 0x00003f00) >> 8 != 0x10) 1590 entry->lvdsconf.use_straps_for_mode = true; 1591 entry->lvdsconf.use_power_scripts = true; 1592 break; 1593 default: 1594 break; 1595 } 1596 1597 return true; 1598} 1599 1600static 1601void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb) 1602{ 1603 /* 1604 * DCB v2.0 lists each output combination separately. 1605 * Here we merge compatible entries to have fewer outputs, with 1606 * more options 1607 */ 1608 1609 struct nouveau_drm *drm = nouveau_drm(dev); 1610 int i, newentries = 0; 1611 1612 for (i = 0; i < dcb->entries; i++) { 1613 struct dcb_output *ient = &dcb->entry[i]; 1614 int j; 1615 1616 for (j = i + 1; j < dcb->entries; j++) { 1617 struct dcb_output *jent = &dcb->entry[j]; 1618 1619 if (jent->type == DCB_OUTPUT_MERGED) 1620 continue; 1621 1622 /* merge heads field when all other fields the same */ 1623 if (jent->i2c_index == ient->i2c_index && 1624 jent->type == ient->type && 1625 jent->location == ient->location && 1626 jent->or == ient->or) { 1627 NV_INFO(drm, "Merging DCB entries %d and %d\n", 1628 i, j); 1629 ient->heads |= jent->heads; 1630 jent->type = DCB_OUTPUT_MERGED; 1631 } 1632 } 1633 } 1634 1635 /* Compact entries merged into others out of dcb */ 1636 for (i = 0; i < dcb->entries; i++) { 1637 if (dcb->entry[i].type == DCB_OUTPUT_MERGED) 1638 continue; 1639 1640 if (newentries != i) { 1641 dcb->entry[newentries] = dcb->entry[i]; 1642 dcb->entry[newentries].index = newentries; 1643 } 1644 newentries++; 1645 } 1646 1647 dcb->entries = newentries; 1648} 1649 1650static bool 1651apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf) 1652{ 1653 struct nouveau_drm *drm = nouveau_drm(dev); 1654 struct dcb_table *dcb = &drm->vbios.dcb; 1655 1656 /* Dell Precision M6300 1657 * DCB entry 2: 02025312 00000010 1658 * DCB entry 3: 02026312 00000020 1659 * 1660 * Identical, except apparently a different connector on a 1661 * different SOR link. Not a clue how we're supposed to know 1662 * which one is in use if it even shares an i2c line... 1663 * 1664 * Ignore the connector on the second SOR link to prevent 1665 * nasty problems until this is sorted (assuming it's not a 1666 * VBIOS bug). 1667 */ 1668 if (nv_match_device(dev, 0x040d, 0x1028, 0x019b)) { 1669 if (*conn == 0x02026312 && *conf == 0x00000020) 1670 return false; 1671 } 1672 1673 /* GeForce3 Ti 200 1674 * 1675 * DCB reports an LVDS output that should be TMDS: 1676 * DCB entry 1: f2005014 ffffffff 1677 */ 1678 if (nv_match_device(dev, 0x0201, 0x1462, 0x8851)) { 1679 if (*conn == 0xf2005014 && *conf == 0xffffffff) { 1680 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1, 1, 1); 1681 return false; 1682 } 1683 } 1684 1685 /* XFX GT-240X-YA 1686 * 1687 * So many things wrong here, replace the entire encoder table.. 1688 */ 1689 if (nv_match_device(dev, 0x0ca3, 0x1682, 0x3003)) { 1690 if (idx == 0) { 1691 *conn = 0x02001300; /* VGA, connector 1 */ 1692 *conf = 0x00000028; 1693 } else 1694 if (idx == 1) { 1695 *conn = 0x01010312; /* DVI, connector 0 */ 1696 *conf = 0x00020030; 1697 } else 1698 if (idx == 2) { 1699 *conn = 0x01010310; /* VGA, connector 0 */ 1700 *conf = 0x00000028; 1701 } else 1702 if (idx == 3) { 1703 *conn = 0x02022362; /* HDMI, connector 2 */ 1704 *conf = 0x00020010; 1705 } else { 1706 *conn = 0x0000000e; /* EOL */ 1707 *conf = 0x00000000; 1708 } 1709 } 1710 1711 /* Some other twisted XFX board (rhbz#694914) 1712 * 1713 * The DVI/VGA encoder combo that's supposed to represent the 1714 * DVI-I connector actually point at two different ones, and 1715 * the HDMI connector ends up paired with the VGA instead. 1716 * 1717 * Connector table is missing anything for VGA at all, pointing it 1718 * an invalid conntab entry 2 so we figure it out ourself. 1719 */ 1720 if (nv_match_device(dev, 0x0615, 0x1682, 0x2605)) { 1721 if (idx == 0) { 1722 *conn = 0x02002300; /* VGA, connector 2 */ 1723 *conf = 0x00000028; 1724 } else 1725 if (idx == 1) { 1726 *conn = 0x01010312; /* DVI, connector 0 */ 1727 *conf = 0x00020030; 1728 } else 1729 if (idx == 2) { 1730 *conn = 0x04020310; /* VGA, connector 0 */ 1731 *conf = 0x00000028; 1732 } else 1733 if (idx == 3) { 1734 *conn = 0x02021322; /* HDMI, connector 1 */ 1735 *conf = 0x00020010; 1736 } else { 1737 *conn = 0x0000000e; /* EOL */ 1738 *conf = 0x00000000; 1739 } 1740 } 1741 1742 /* fdo#50830: connector indices for VGA and DVI-I are backwards */ 1743 if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) { 1744 if (idx == 0 && *conn == 0x02000300) 1745 *conn = 0x02011300; 1746 else 1747 if (idx == 1 && *conn == 0x04011310) 1748 *conn = 0x04000310; 1749 else 1750 if (idx == 2 && *conn == 0x02011312) 1751 *conn = 0x02000312; 1752 } 1753 1754 return true; 1755} 1756 1757static void 1758fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios) 1759{ 1760 struct dcb_table *dcb = &bios->dcb; 1761 int all_heads = (nv_two_heads(dev) ? 3 : 1); 1762 1763#ifdef __powerpc__ 1764 /* Apple iMac G4 NV17 */ 1765 if (of_machine_is_compatible("PowerMac4,5")) { 1766 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 0, all_heads, 1); 1767 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1, all_heads, 2); 1768 return; 1769 } 1770#endif 1771 1772 /* Make up some sane defaults */ 1773 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1774 bios->legacy.i2c_indices.crt, 1, 1); 1775 1776 if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0) 1777 fabricate_dcb_output(dcb, DCB_OUTPUT_TV, 1778 bios->legacy.i2c_indices.tv, 1779 all_heads, 0); 1780 1781 else if (bios->tmds.output0_script_ptr || 1782 bios->tmds.output1_script_ptr) 1783 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1784 bios->legacy.i2c_indices.panel, 1785 all_heads, 1); 1786} 1787 1788static int 1789parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp) 1790{ 1791 struct nouveau_drm *drm = nouveau_drm(dev); 1792 struct dcb_table *dcb = &drm->vbios.dcb; 1793 u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]); 1794 u32 conn = ROM32(outp[0]); 1795 bool ret; 1796 1797 if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) { 1798 struct dcb_output *entry = new_dcb_entry(dcb); 1799 1800 NV_INFO(drm, "DCB outp %02d: %08x %08x\n", idx, conn, conf); 1801 1802 if (dcb->version >= 0x20) 1803 ret = parse_dcb20_entry(dev, dcb, conn, conf, entry); 1804 else 1805 ret = parse_dcb15_entry(dev, dcb, conn, conf, entry); 1806 if (!ret) 1807 return 1; /* stop parsing */ 1808 1809 /* Ignore the I2C index for on-chip TV-out, as there 1810 * are cards with bogus values (nv31m in bug 23212), 1811 * and it's otherwise useless. 1812 */ 1813 if (entry->type == DCB_OUTPUT_TV && 1814 entry->location == DCB_LOC_ON_CHIP) 1815 entry->i2c_index = 0x0f; 1816 } 1817 1818 return 0; 1819} 1820 1821static void 1822dcb_fake_connectors(struct nvbios *bios) 1823{ 1824 struct dcb_table *dcbt = &bios->dcb; 1825 u8 map[16] = { }; 1826 int i, idx = 0; 1827 1828 /* heuristic: if we ever get a non-zero connector field, assume 1829 * that all the indices are valid and we don't need fake them. 1830 * 1831 * and, as usual, a blacklist of boards with bad bios data.. 1832 */ 1833 if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) { 1834 for (i = 0; i < dcbt->entries; i++) { 1835 if (dcbt->entry[i].connector) 1836 return; 1837 } 1838 } 1839 1840 /* no useful connector info available, we need to make it up 1841 * ourselves. the rule here is: anything on the same i2c bus 1842 * is considered to be on the same connector. any output 1843 * without an associated i2c bus is assigned its own unique 1844 * connector index. 1845 */ 1846 for (i = 0; i < dcbt->entries; i++) { 1847 u8 i2c = dcbt->entry[i].i2c_index; 1848 if (i2c == 0x0f) { 1849 dcbt->entry[i].connector = idx++; 1850 } else { 1851 if (!map[i2c]) 1852 map[i2c] = ++idx; 1853 dcbt->entry[i].connector = map[i2c] - 1; 1854 } 1855 } 1856 1857 /* if we created more than one connector, destroy the connector 1858 * table - just in case it has random, rather than stub, entries. 1859 */ 1860 if (i > 1) { 1861 u8 *conntab = olddcb_conntab(bios->dev); 1862 if (conntab) 1863 conntab[0] = 0x00; 1864 } 1865} 1866 1867static int 1868parse_dcb_table(struct drm_device *dev, struct nvbios *bios) 1869{ 1870 struct nouveau_drm *drm = nouveau_drm(dev); 1871 struct dcb_table *dcb = &bios->dcb; 1872 u8 *dcbt, *conn; 1873 int idx; 1874 1875 dcbt = olddcb_table(dev); 1876 if (!dcbt) { 1877 /* handle pre-DCB boards */ 1878 if (bios->type == NVBIOS_BMP) { 1879 fabricate_dcb_encoder_table(dev, bios); 1880 return 0; 1881 } 1882 1883 return -EINVAL; 1884 } 1885 1886 NV_INFO(drm, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf); 1887 1888 dcb->version = dcbt[0]; 1889 olddcb_outp_foreach(dev, NULL, parse_dcb_entry); 1890 1891 /* 1892 * apart for v2.1+ not being known for requiring merging, this 1893 * guarantees dcbent->index is the index of the entry in the rom image 1894 */ 1895 if (dcb->version < 0x21) 1896 merge_like_dcb_entries(dev, dcb); 1897 1898 /* dump connector table entries to log, if any exist */ 1899 idx = -1; 1900 while ((conn = olddcb_conn(dev, ++idx))) { 1901 if (conn[0] != 0xff) { 1902 if (olddcb_conntab(dev)[3] < 4) 1903 NV_INFO(drm, "DCB conn %02d: %04x\n", 1904 idx, ROM16(conn[0])); 1905 else 1906 NV_INFO(drm, "DCB conn %02d: %08x\n", 1907 idx, ROM32(conn[0])); 1908 } 1909 } 1910 dcb_fake_connectors(bios); 1911 return 0; 1912} 1913 1914static int load_nv17_hwsq_ucode_entry(struct drm_device *dev, struct nvbios *bios, uint16_t hwsq_offset, int entry) 1915{ 1916 /* 1917 * The header following the "HWSQ" signature has the number of entries, 1918 * and the entry size 1919 * 1920 * An entry consists of a dword to write to the sequencer control reg 1921 * (0x00001304), followed by the ucode bytes, written sequentially, 1922 * starting at reg 0x00001400 1923 */ 1924 1925 struct nouveau_drm *drm = nouveau_drm(dev); 1926 struct nvif_object *device = &drm->client.device.object; 1927 uint8_t bytes_to_write; 1928 uint16_t hwsq_entry_offset; 1929 int i; 1930 1931 if (bios->data[hwsq_offset] <= entry) { 1932 NV_ERROR(drm, "Too few entries in HW sequencer table for " 1933 "requested entry\n"); 1934 return -ENOENT; 1935 } 1936 1937 bytes_to_write = bios->data[hwsq_offset + 1]; 1938 1939 if (bytes_to_write != 36) { 1940 NV_ERROR(drm, "Unknown HW sequencer entry size\n"); 1941 return -EINVAL; 1942 } 1943 1944 NV_INFO(drm, "Loading NV17 power sequencing microcode\n"); 1945 1946 hwsq_entry_offset = hwsq_offset + 2 + entry * bytes_to_write; 1947 1948 /* set sequencer control */ 1949 nvif_wr32(device, 0x00001304, ROM32(bios->data[hwsq_entry_offset])); 1950 bytes_to_write -= 4; 1951 1952 /* write ucode */ 1953 for (i = 0; i < bytes_to_write; i += 4) 1954 nvif_wr32(device, 0x00001400 + i, ROM32(bios->data[hwsq_entry_offset + i + 4])); 1955 1956 /* twiddle NV_PBUS_DEBUG_4 */ 1957 nvif_wr32(device, NV_PBUS_DEBUG_4, nvif_rd32(device, NV_PBUS_DEBUG_4) | 0x18); 1958 1959 return 0; 1960} 1961 1962static int load_nv17_hw_sequencer_ucode(struct drm_device *dev, 1963 struct nvbios *bios) 1964{ 1965 /* 1966 * BMP based cards, from NV17, need a microcode loading to correctly 1967 * control the GPIO etc for LVDS panels 1968 * 1969 * BIT based cards seem to do this directly in the init scripts 1970 * 1971 * The microcode entries are found by the "HWSQ" signature. 1972 */ 1973 1974 static const uint8_t hwsq_signature[] = { 'H', 'W', 'S', 'Q' }; 1975 const int sz = sizeof(hwsq_signature); 1976 int hwsq_offset; 1977 1978 hwsq_offset = findstr(bios->data, bios->length, hwsq_signature, sz); 1979 if (!hwsq_offset) 1980 return 0; 1981 1982 /* always use entry 0? */ 1983 return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0); 1984} 1985 1986uint8_t *nouveau_bios_embedded_edid(struct drm_device *dev) 1987{ 1988 struct nouveau_drm *drm = nouveau_drm(dev); 1989 struct nvbios *bios = &drm->vbios; 1990 static const uint8_t edid_sig[] = { 1991 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }; 1992 uint16_t offset = 0; 1993 uint16_t newoffset; 1994 int searchlen = NV_PROM_SIZE; 1995 1996 if (bios->fp.edid) 1997 return bios->fp.edid; 1998 1999 while (searchlen) { 2000 newoffset = findstr(&bios->data[offset], searchlen, 2001 edid_sig, 8); 2002 if (!newoffset) 2003 return NULL; 2004 offset += newoffset; 2005 if (!nv_cksum(&bios->data[offset], EDID1_LEN)) 2006 break; 2007 2008 searchlen -= offset; 2009 offset++; 2010 } 2011 2012 NV_INFO(drm, "Found EDID in BIOS\n"); 2013 2014 return bios->fp.edid = &bios->data[offset]; 2015} 2016 2017static bool NVInitVBIOS(struct drm_device *dev) 2018{ 2019 struct nouveau_drm *drm = nouveau_drm(dev); 2020 struct nvkm_bios *bios = nvxx_bios(&drm->client.device); 2021 struct nvbios *legacy = &drm->vbios; 2022 2023 memset(legacy, 0, sizeof(struct nvbios)); 2024 spin_lock_init(&legacy->lock); 2025 legacy->dev = dev; 2026 2027 legacy->data = bios->data; 2028 legacy->length = bios->size; 2029 legacy->major_version = bios->version.major; 2030 legacy->chip_version = bios->version.chip; 2031 if (bios->bit_offset) { 2032 legacy->type = NVBIOS_BIT; 2033 legacy->offset = bios->bit_offset; 2034 return !parse_bit_structure(legacy, legacy->offset + 6); 2035 } else 2036 if (bios->bmp_offset) { 2037 legacy->type = NVBIOS_BMP; 2038 legacy->offset = bios->bmp_offset; 2039 return !parse_bmp_structure(dev, legacy, legacy->offset); 2040 } 2041 2042 return false; 2043} 2044 2045int 2046nouveau_run_vbios_init(struct drm_device *dev) 2047{ 2048 struct nouveau_drm *drm = nouveau_drm(dev); 2049 struct nvbios *bios = &drm->vbios; 2050 int ret = 0; 2051 2052 /* Reset the BIOS head to 0. */ 2053 bios->state.crtchead = 0; 2054 2055 if (bios->major_version < 5) /* BMP only */ 2056 load_nv17_hw_sequencer_ucode(dev, bios); 2057 2058 if (bios->execute) { 2059 bios->fp.last_script_invoc = 0; 2060 bios->fp.lvds_init_run = false; 2061 } 2062 2063 return ret; 2064} 2065 2066static bool 2067nouveau_bios_posted(struct drm_device *dev) 2068{ 2069 struct nouveau_drm *drm = nouveau_drm(dev); 2070 unsigned htotal; 2071 2072 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) 2073 return true; 2074 2075 htotal = NVReadVgaCrtc(dev, 0, 0x06); 2076 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8; 2077 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4; 2078 htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10; 2079 htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11; 2080 return (htotal != 0); 2081} 2082 2083int 2084nouveau_bios_init(struct drm_device *dev) 2085{ 2086 struct nouveau_drm *drm = nouveau_drm(dev); 2087 struct nvbios *bios = &drm->vbios; 2088 int ret; 2089 2090 /* only relevant for PCI devices */ 2091 if (!dev->pdev) 2092 return 0; 2093 2094 if (!NVInitVBIOS(dev)) 2095 return -ENODEV; 2096 2097 ret = parse_dcb_table(dev, bios); 2098 if (ret) 2099 return ret; 2100 2101 if (!bios->major_version) /* we don't run version 0 bios */ 2102 return 0; 2103 2104 /* init script execution disabled */ 2105 bios->execute = false; 2106 2107 /* ... unless card isn't POSTed already */ 2108 if (!nouveau_bios_posted(dev)) { 2109 NV_INFO(drm, "Adaptor not initialised, " 2110 "running VBIOS init tables.\n"); 2111 bios->execute = true; 2112 } 2113 2114 ret = nouveau_run_vbios_init(dev); 2115 if (ret) 2116 return ret; 2117 2118 /* feature_byte on BMP is poor, but init always sets CR4B */ 2119 if (bios->major_version < 5) 2120 bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40; 2121 2122 /* all BIT systems need p_f_m_t for digital_min_front_porch */ 2123 if (bios->is_mobile || bios->major_version >= 5) 2124 ret = parse_fp_mode_table(dev, bios); 2125 2126 /* allow subsequent scripts to execute */ 2127 bios->execute = true; 2128 2129 return 0; 2130} 2131 2132void 2133nouveau_bios_takedown(struct drm_device *dev) 2134{ 2135 struct nouveau_drm *drm = nouveau_drm(dev); 2136 struct nvbios *legacy = &drm->vbios; 2137 2138 spin_lock_destroy(&legacy->lock); 2139} 2140