1 /* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * Copyright 2009 Jerome Glisse. 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alex Deucher 26 * Jerome Glisse 27 */ 28 #include <linux/console.h> 29 #include <linux/slab.h> 30 #include <drm/drmP.h> 31 #include <drm/drm_crtc_helper.h> 32 #include <drm/radeon_drm.h> 33 #include <linux/vgaarb.h> 34 #include <linux/vga_switcheroo.h> 35 #include <linux/efi.h> 36 #include "radeon_reg.h" 37 #include "radeon.h" 38 #include "atom.h" 39 40 static const char radeon_family_name[][16] = { 41 "R100", 42 "RV100", 43 "RS100", 44 "RV200", 45 "RS200", 46 "R200", 47 "RV250", 48 "RS300", 49 "RV280", 50 "R300", 51 "R350", 52 "RV350", 53 "RV380", 54 "R420", 55 "R423", 56 "RV410", 57 "RS400", 58 "RS480", 59 "RS600", 60 "RS690", 61 "RS740", 62 "RV515", 63 "R520", 64 "RV530", 65 "RV560", 66 "RV570", 67 "R580", 68 "R600", 69 "RV610", 70 "RV630", 71 "RV670", 72 "RV620", 73 "RV635", 74 "RS780", 75 "RS880", 76 "RV770", 77 "RV730", 78 "RV710", 79 "RV740", 80 "CEDAR", 81 "REDWOOD", 82 "JUNIPER", 83 "CYPRESS", 84 "HEMLOCK", 85 "PALM", 86 "SUMO", 87 "SUMO2", 88 "BARTS", 89 "TURKS", 90 "CAICOS", 91 "CAYMAN", 92 "ARUBA", 93 "TAHITI", 94 "PITCAIRN", 95 "VERDE", 96 "LAST", 97 }; 98 99 /** 100 * radeon_surface_init - Clear GPU surface registers. 101 * 102 * @rdev: radeon_device pointer 103 * 104 * Clear GPU surface registers (r1xx-r5xx). 105 */ 106 void radeon_surface_init(struct radeon_device *rdev) 107 { 108 /* FIXME: check this out */ 109 if (rdev->family < CHIP_R600) { 110 int i; 111 112 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) { 113 if (rdev->surface_regs[i].bo) 114 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo); 115 else 116 radeon_clear_surface_reg(rdev, i); 117 } 118 /* enable surfaces */ 119 WREG32(RADEON_SURFACE_CNTL, 0); 120 } 121 } 122 123 /* 124 * GPU scratch registers helpers function. 125 */ 126 /** 127 * radeon_scratch_init - Init scratch register driver information. 128 * 129 * @rdev: radeon_device pointer 130 * 131 * Init CP scratch register driver information (r1xx-r5xx) 132 */ 133 void radeon_scratch_init(struct radeon_device *rdev) 134 { 135 int i; 136 137 /* FIXME: check this out */ 138 if (rdev->family < CHIP_R300) { 139 rdev->scratch.num_reg = 5; 140 } else { 141 rdev->scratch.num_reg = 7; 142 } 143 rdev->scratch.reg_base = RADEON_SCRATCH_REG0; 144 for (i = 0; i < rdev->scratch.num_reg; i++) { 145 rdev->scratch.free[i] = true; 146 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4); 147 } 148 } 149 150 /** 151 * radeon_scratch_get - Allocate a scratch register 152 * 153 * @rdev: radeon_device pointer 154 * @reg: scratch register mmio offset 155 * 156 * Allocate a CP scratch register for use by the driver (all asics). 157 * Returns 0 on success or -EINVAL on failure. 158 */ 159 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg) 160 { 161 int i; 162 163 for (i = 0; i < rdev->scratch.num_reg; i++) { 164 if (rdev->scratch.free[i]) { 165 rdev->scratch.free[i] = false; 166 *reg = rdev->scratch.reg[i]; 167 return 0; 168 } 169 } 170 return -EINVAL; 171 } 172 173 /** 174 * radeon_scratch_free - Free a scratch register 175 * 176 * @rdev: radeon_device pointer 177 * @reg: scratch register mmio offset 178 * 179 * Free a CP scratch register allocated for use by the driver (all asics) 180 */ 181 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg) 182 { 183 int i; 184 185 for (i = 0; i < rdev->scratch.num_reg; i++) { 186 if (rdev->scratch.reg[i] == reg) { 187 rdev->scratch.free[i] = true; 188 return; 189 } 190 } 191 } 192 193 /* 194 * radeon_wb_*() 195 * Writeback is the the method by which the the GPU updates special pages 196 * in memory with the status of certain GPU events (fences, ring pointers, 197 * etc.). 198 */ 199 200 /** 201 * radeon_wb_disable - Disable Writeback 202 * 203 * @rdev: radeon_device pointer 204 * 205 * Disables Writeback (all asics). Used for suspend. 206 */ 207 void radeon_wb_disable(struct radeon_device *rdev) 208 { 209 int r; 210 211 if (rdev->wb.wb_obj) { 212 r = radeon_bo_reserve(rdev->wb.wb_obj, false); 213 if (unlikely(r != 0)) 214 return; 215 radeon_bo_kunmap(rdev->wb.wb_obj); 216 radeon_bo_unpin(rdev->wb.wb_obj); 217 radeon_bo_unreserve(rdev->wb.wb_obj); 218 } 219 rdev->wb.enabled = false; 220 } 221 222 /** 223 * radeon_wb_fini - Disable Writeback and free memory 224 * 225 * @rdev: radeon_device pointer 226 * 227 * Disables Writeback and frees the Writeback memory (all asics). 228 * Used at driver shutdown. 229 */ 230 void radeon_wb_fini(struct radeon_device *rdev) 231 { 232 radeon_wb_disable(rdev); 233 if (rdev->wb.wb_obj) { 234 radeon_bo_unref(&rdev->wb.wb_obj); 235 rdev->wb.wb = NULL; 236 rdev->wb.wb_obj = NULL; 237 } 238 } 239 240 /** 241 * radeon_wb_init- Init Writeback driver info and allocate memory 242 * 243 * @rdev: radeon_device pointer 244 * 245 * Disables Writeback and frees the Writeback memory (all asics). 246 * Used at driver startup. 247 * Returns 0 on success or an -error on failure. 248 */ 249 int radeon_wb_init(struct radeon_device *rdev) 250 { 251 int r; 252 253 if (rdev->wb.wb_obj == NULL) { 254 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true, 255 RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj); 256 if (r) { 257 dev_warn(rdev->dev, "(%d) create WB bo failed\n", r); 258 return r; 259 } 260 } 261 r = radeon_bo_reserve(rdev->wb.wb_obj, false); 262 if (unlikely(r != 0)) { 263 radeon_wb_fini(rdev); 264 return r; 265 } 266 r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT, 267 &rdev->wb.gpu_addr); 268 if (r) { 269 radeon_bo_unreserve(rdev->wb.wb_obj); 270 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r); 271 radeon_wb_fini(rdev); 272 return r; 273 } 274 r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb); 275 radeon_bo_unreserve(rdev->wb.wb_obj); 276 if (r) { 277 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r); 278 radeon_wb_fini(rdev); 279 return r; 280 } 281 282 /* clear wb memory */ 283 memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE); 284 /* disable event_write fences */ 285 rdev->wb.use_event = false; 286 /* disabled via module param */ 287 if (radeon_no_wb == 1) { 288 rdev->wb.enabled = false; 289 } else { 290 if (rdev->flags & RADEON_IS_AGP) { 291 /* often unreliable on AGP */ 292 rdev->wb.enabled = false; 293 } else if (rdev->family < CHIP_R300) { 294 /* often unreliable on pre-r300 */ 295 rdev->wb.enabled = false; 296 } else { 297 rdev->wb.enabled = true; 298 /* event_write fences are only available on r600+ */ 299 if (rdev->family >= CHIP_R600) { 300 rdev->wb.use_event = true; 301 } 302 } 303 } 304 /* always use writeback/events on NI, APUs */ 305 if (rdev->family >= CHIP_PALM) { 306 rdev->wb.enabled = true; 307 rdev->wb.use_event = true; 308 } 309 310 dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis"); 311 312 return 0; 313 } 314 315 /** 316 * radeon_vram_location - try to find VRAM location 317 * @rdev: radeon device structure holding all necessary informations 318 * @mc: memory controller structure holding memory informations 319 * @base: base address at which to put VRAM 320 * 321 * Function will place try to place VRAM at base address provided 322 * as parameter (which is so far either PCI aperture address or 323 * for IGP TOM base address). 324 * 325 * If there is not enough space to fit the unvisible VRAM in the 32bits 326 * address space then we limit the VRAM size to the aperture. 327 * 328 * If we are using AGP and if the AGP aperture doesn't allow us to have 329 * room for all the VRAM than we restrict the VRAM to the PCI aperture 330 * size and print a warning. 331 * 332 * This function will never fails, worst case are limiting VRAM. 333 * 334 * Note: GTT start, end, size should be initialized before calling this 335 * function on AGP platform. 336 * 337 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size, 338 * this shouldn't be a problem as we are using the PCI aperture as a reference. 339 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but 340 * not IGP. 341 * 342 * Note: we use mc_vram_size as on some board we need to program the mc to 343 * cover the whole aperture even if VRAM size is inferior to aperture size 344 * Novell bug 204882 + along with lots of ubuntu ones 345 * 346 * Note: when limiting vram it's safe to overwritte real_vram_size because 347 * we are not in case where real_vram_size is inferior to mc_vram_size (ie 348 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu 349 * ones) 350 * 351 * Note: IGP TOM addr should be the same as the aperture addr, we don't 352 * explicitly check for that thought. 353 * 354 * FIXME: when reducing VRAM size align new size on power of 2. 355 */ 356 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base) 357 { 358 uint64_t limit = (uint64_t)radeon_vram_limit << 20; 359 360 mc->vram_start = base; 361 if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) { 362 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n"); 363 mc->real_vram_size = mc->aper_size; 364 mc->mc_vram_size = mc->aper_size; 365 } 366 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1; 367 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) { 368 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n"); 369 mc->real_vram_size = mc->aper_size; 370 mc->mc_vram_size = mc->aper_size; 371 } 372 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1; 373 if (limit && limit < mc->real_vram_size) 374 mc->real_vram_size = limit; 375 dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n", 376 mc->mc_vram_size >> 20, mc->vram_start, 377 mc->vram_end, mc->real_vram_size >> 20); 378 } 379 380 /** 381 * radeon_gtt_location - try to find GTT location 382 * @rdev: radeon device structure holding all necessary informations 383 * @mc: memory controller structure holding memory informations 384 * 385 * Function will place try to place GTT before or after VRAM. 386 * 387 * If GTT size is bigger than space left then we ajust GTT size. 388 * Thus function will never fails. 389 * 390 * FIXME: when reducing GTT size align new size on power of 2. 391 */ 392 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc) 393 { 394 u64 size_af, size_bf; 395 396 size_af = ((0xFFFFFFFF - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align; 397 size_bf = mc->vram_start & ~mc->gtt_base_align; 398 if (size_bf > size_af) { 399 if (mc->gtt_size > size_bf) { 400 dev_warn(rdev->dev, "limiting GTT\n"); 401 mc->gtt_size = size_bf; 402 } 403 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size; 404 } else { 405 if (mc->gtt_size > size_af) { 406 dev_warn(rdev->dev, "limiting GTT\n"); 407 mc->gtt_size = size_af; 408 } 409 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align; 410 } 411 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1; 412 dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n", 413 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end); 414 } 415 416 /* 417 * GPU helpers function. 418 */ 419 /** 420 * radeon_card_posted - check if the hw has already been initialized 421 * 422 * @rdev: radeon_device pointer 423 * 424 * Check if the asic has been initialized (all asics). 425 * Used at driver startup. 426 * Returns true if initialized or false if not. 427 */ 428 bool radeon_card_posted(struct radeon_device *rdev) 429 { 430 uint32_t reg; 431 432 if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) 433 return false; 434 435 /* first check CRTCs */ 436 if (ASIC_IS_DCE41(rdev)) { 437 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | 438 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET); 439 if (reg & EVERGREEN_CRTC_MASTER_EN) 440 return true; 441 } else if (ASIC_IS_DCE4(rdev)) { 442 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | 443 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) | 444 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) | 445 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) | 446 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) | 447 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET); 448 if (reg & EVERGREEN_CRTC_MASTER_EN) 449 return true; 450 } else if (ASIC_IS_AVIVO(rdev)) { 451 reg = RREG32(AVIVO_D1CRTC_CONTROL) | 452 RREG32(AVIVO_D2CRTC_CONTROL); 453 if (reg & AVIVO_CRTC_EN) { 454 return true; 455 } 456 } else { 457 reg = RREG32(RADEON_CRTC_GEN_CNTL) | 458 RREG32(RADEON_CRTC2_GEN_CNTL); 459 if (reg & RADEON_CRTC_EN) { 460 return true; 461 } 462 } 463 464 /* then check MEM_SIZE, in case the crtcs are off */ 465 if (rdev->family >= CHIP_R600) 466 reg = RREG32(R600_CONFIG_MEMSIZE); 467 else 468 reg = RREG32(RADEON_CONFIG_MEMSIZE); 469 470 if (reg) 471 return true; 472 473 return false; 474 475 } 476 477 /** 478 * radeon_update_bandwidth_info - update display bandwidth params 479 * 480 * @rdev: radeon_device pointer 481 * 482 * Used when sclk/mclk are switched or display modes are set. 483 * params are used to calculate display watermarks (all asics) 484 */ 485 void radeon_update_bandwidth_info(struct radeon_device *rdev) 486 { 487 fixed20_12 a; 488 u32 sclk = rdev->pm.current_sclk; 489 u32 mclk = rdev->pm.current_mclk; 490 491 /* sclk/mclk in Mhz */ 492 a.full = dfixed_const(100); 493 rdev->pm.sclk.full = dfixed_const(sclk); 494 rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); 495 rdev->pm.mclk.full = dfixed_const(mclk); 496 rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a); 497 498 if (rdev->flags & RADEON_IS_IGP) { 499 a.full = dfixed_const(16); 500 /* core_bandwidth = sclk(Mhz) * 16 */ 501 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a); 502 } 503 } 504 505 /** 506 * radeon_boot_test_post_card - check and possibly initialize the hw 507 * 508 * @rdev: radeon_device pointer 509 * 510 * Check if the asic is initialized and if not, attempt to initialize 511 * it (all asics). 512 * Returns true if initialized or false if not. 513 */ 514 bool radeon_boot_test_post_card(struct radeon_device *rdev) 515 { 516 if (radeon_card_posted(rdev)) 517 return true; 518 519 if (rdev->bios) { 520 DRM_INFO("GPU not posted. posting now...\n"); 521 if (rdev->is_atom_bios) 522 atom_asic_init(rdev->mode_info.atom_context); 523 else 524 radeon_combios_asic_init(rdev->ddev); 525 return true; 526 } else { 527 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n"); 528 return false; 529 } 530 } 531 532 /** 533 * radeon_dummy_page_init - init dummy page used by the driver 534 * 535 * @rdev: radeon_device pointer 536 * 537 * Allocate the dummy page used by the driver (all asics). 538 * This dummy page is used by the driver as a filler for gart entries 539 * when pages are taken out of the GART 540 * Returns 0 on sucess, -ENOMEM on failure. 541 */ 542 int radeon_dummy_page_init(struct radeon_device *rdev) 543 { 544 if (rdev->dummy_page.page) 545 return 0; 546 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); 547 if (rdev->dummy_page.page == NULL) 548 return -ENOMEM; 549 rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page, 550 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); 551 if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) { 552 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n"); 553 __free_page(rdev->dummy_page.page); 554 rdev->dummy_page.page = NULL; 555 return -ENOMEM; 556 } 557 return 0; 558 } 559 560 /** 561 * radeon_dummy_page_fini - free dummy page used by the driver 562 * 563 * @rdev: radeon_device pointer 564 * 565 * Frees the dummy page used by the driver (all asics). 566 */ 567 void radeon_dummy_page_fini(struct radeon_device *rdev) 568 { 569 if (rdev->dummy_page.page == NULL) 570 return; 571 pci_unmap_page(rdev->pdev, rdev->dummy_page.addr, 572 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); 573 __free_page(rdev->dummy_page.page); 574 rdev->dummy_page.page = NULL; 575 } 576 577 578 /* ATOM accessor methods */ 579 /* 580 * ATOM is an interpreted byte code stored in tables in the vbios. The 581 * driver registers callbacks to access registers and the interpreter 582 * in the driver parses the tables and executes then to program specific 583 * actions (set display modes, asic init, etc.). See radeon_atombios.c, 584 * atombios.h, and atom.c 585 */ 586 587 /** 588 * cail_pll_read - read PLL register 589 * 590 * @info: atom card_info pointer 591 * @reg: PLL register offset 592 * 593 * Provides a PLL register accessor for the atom interpreter (r4xx+). 594 * Returns the value of the PLL register. 595 */ 596 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg) 597 { 598 struct radeon_device *rdev = info->dev->dev_private; 599 uint32_t r; 600 601 r = rdev->pll_rreg(rdev, reg); 602 return r; 603 } 604 605 /** 606 * cail_pll_write - write PLL register 607 * 608 * @info: atom card_info pointer 609 * @reg: PLL register offset 610 * @val: value to write to the pll register 611 * 612 * Provides a PLL register accessor for the atom interpreter (r4xx+). 613 */ 614 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val) 615 { 616 struct radeon_device *rdev = info->dev->dev_private; 617 618 rdev->pll_wreg(rdev, reg, val); 619 } 620 621 /** 622 * cail_mc_read - read MC (Memory Controller) register 623 * 624 * @info: atom card_info pointer 625 * @reg: MC register offset 626 * 627 * Provides an MC register accessor for the atom interpreter (r4xx+). 628 * Returns the value of the MC register. 629 */ 630 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg) 631 { 632 struct radeon_device *rdev = info->dev->dev_private; 633 uint32_t r; 634 635 r = rdev->mc_rreg(rdev, reg); 636 return r; 637 } 638 639 /** 640 * cail_mc_write - write MC (Memory Controller) register 641 * 642 * @info: atom card_info pointer 643 * @reg: MC register offset 644 * @val: value to write to the pll register 645 * 646 * Provides a MC register accessor for the atom interpreter (r4xx+). 647 */ 648 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val) 649 { 650 struct radeon_device *rdev = info->dev->dev_private; 651 652 rdev->mc_wreg(rdev, reg, val); 653 } 654 655 /** 656 * cail_reg_write - write MMIO register 657 * 658 * @info: atom card_info pointer 659 * @reg: MMIO register offset 660 * @val: value to write to the pll register 661 * 662 * Provides a MMIO register accessor for the atom interpreter (r4xx+). 663 */ 664 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val) 665 { 666 struct radeon_device *rdev = info->dev->dev_private; 667 668 WREG32(reg*4, val); 669 } 670 671 /** 672 * cail_reg_read - read MMIO register 673 * 674 * @info: atom card_info pointer 675 * @reg: MMIO register offset 676 * 677 * Provides an MMIO register accessor for the atom interpreter (r4xx+). 678 * Returns the value of the MMIO register. 679 */ 680 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg) 681 { 682 struct radeon_device *rdev = info->dev->dev_private; 683 uint32_t r; 684 685 r = RREG32(reg*4); 686 return r; 687 } 688 689 /** 690 * cail_ioreg_write - write IO register 691 * 692 * @info: atom card_info pointer 693 * @reg: IO register offset 694 * @val: value to write to the pll register 695 * 696 * Provides a IO register accessor for the atom interpreter (r4xx+). 697 */ 698 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val) 699 { 700 struct radeon_device *rdev = info->dev->dev_private; 701 702 WREG32_IO(reg*4, val); 703 } 704 705 /** 706 * cail_ioreg_read - read IO register 707 * 708 * @info: atom card_info pointer 709 * @reg: IO register offset 710 * 711 * Provides an IO register accessor for the atom interpreter (r4xx+). 712 * Returns the value of the IO register. 713 */ 714 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg) 715 { 716 struct radeon_device *rdev = info->dev->dev_private; 717 uint32_t r; 718 719 r = RREG32_IO(reg*4); 720 return r; 721 } 722 723 /** 724 * radeon_atombios_init - init the driver info and callbacks for atombios 725 * 726 * @rdev: radeon_device pointer 727 * 728 * Initializes the driver info and register access callbacks for the 729 * ATOM interpreter (r4xx+). 730 * Returns 0 on sucess, -ENOMEM on failure. 731 * Called at driver startup. 732 */ 733 int radeon_atombios_init(struct radeon_device *rdev) 734 { 735 struct card_info *atom_card_info = 736 kzalloc(sizeof(struct card_info), GFP_KERNEL); 737 738 if (!atom_card_info) 739 return -ENOMEM; 740 741 rdev->mode_info.atom_card_info = atom_card_info; 742 atom_card_info->dev = rdev->ddev; 743 atom_card_info->reg_read = cail_reg_read; 744 atom_card_info->reg_write = cail_reg_write; 745 /* needed for iio ops */ 746 if (rdev->rio_mem) { 747 atom_card_info->ioreg_read = cail_ioreg_read; 748 atom_card_info->ioreg_write = cail_ioreg_write; 749 } else { 750 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n"); 751 atom_card_info->ioreg_read = cail_reg_read; 752 atom_card_info->ioreg_write = cail_reg_write; 753 } 754 atom_card_info->mc_read = cail_mc_read; 755 atom_card_info->mc_write = cail_mc_write; 756 atom_card_info->pll_read = cail_pll_read; 757 atom_card_info->pll_write = cail_pll_write; 758 759 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios); 760 mutex_init(&rdev->mode_info.atom_context->mutex); 761 radeon_atom_initialize_bios_scratch_regs(rdev->ddev); 762 atom_allocate_fb_scratch(rdev->mode_info.atom_context); 763 return 0; 764 } 765 766 /** 767 * radeon_atombios_fini - free the driver info and callbacks for atombios 768 * 769 * @rdev: radeon_device pointer 770 * 771 * Frees the driver info and register access callbacks for the ATOM 772 * interpreter (r4xx+). 773 * Called at driver shutdown. 774 */ 775 void radeon_atombios_fini(struct radeon_device *rdev) 776 { 777 if (rdev->mode_info.atom_context) { 778 kfree(rdev->mode_info.atom_context->scratch); 779 kfree(rdev->mode_info.atom_context); 780 } 781 kfree(rdev->mode_info.atom_card_info); 782 } 783 784 /* COMBIOS */ 785 /* 786 * COMBIOS is the bios format prior to ATOM. It provides 787 * command tables similar to ATOM, but doesn't have a unified 788 * parser. See radeon_combios.c 789 */ 790 791 /** 792 * radeon_combios_init - init the driver info for combios 793 * 794 * @rdev: radeon_device pointer 795 * 796 * Initializes the driver info for combios (r1xx-r3xx). 797 * Returns 0 on sucess. 798 * Called at driver startup. 799 */ 800 int radeon_combios_init(struct radeon_device *rdev) 801 { 802 radeon_combios_initialize_bios_scratch_regs(rdev->ddev); 803 return 0; 804 } 805 806 /** 807 * radeon_combios_fini - free the driver info for combios 808 * 809 * @rdev: radeon_device pointer 810 * 811 * Frees the driver info for combios (r1xx-r3xx). 812 * Called at driver shutdown. 813 */ 814 void radeon_combios_fini(struct radeon_device *rdev) 815 { 816 } 817 818 /* if we get transitioned to only one device, take VGA back */ 819 /** 820 * radeon_vga_set_decode - enable/disable vga decode 821 * 822 * @cookie: radeon_device pointer 823 * @state: enable/disable vga decode 824 * 825 * Enable/disable vga decode (all asics). 826 * Returns VGA resource flags. 827 */ 828 static unsigned int radeon_vga_set_decode(void *cookie, bool state) 829 { 830 struct radeon_device *rdev = cookie; 831 radeon_vga_set_state(rdev, state); 832 if (state) 833 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | 834 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; 835 else 836 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; 837 } 838 839 /** 840 * radeon_check_pot_argument - check that argument is a power of two 841 * 842 * @arg: value to check 843 * 844 * Validates that a certain argument is a power of two (all asics). 845 * Returns true if argument is valid. 846 */ 847 static bool radeon_check_pot_argument(int arg) 848 { 849 return (arg & (arg - 1)) == 0; 850 } 851 852 /** 853 * radeon_check_arguments - validate module params 854 * 855 * @rdev: radeon_device pointer 856 * 857 * Validates certain module parameters and updates 858 * the associated values used by the driver (all asics). 859 */ 860 static void radeon_check_arguments(struct radeon_device *rdev) 861 { 862 /* vramlimit must be a power of two */ 863 if (!radeon_check_pot_argument(radeon_vram_limit)) { 864 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n", 865 radeon_vram_limit); 866 radeon_vram_limit = 0; 867 } 868 869 /* gtt size must be power of two and greater or equal to 32M */ 870 if (radeon_gart_size < 32) { 871 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n", 872 radeon_gart_size); 873 radeon_gart_size = 512; 874 875 } else if (!radeon_check_pot_argument(radeon_gart_size)) { 876 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n", 877 radeon_gart_size); 878 radeon_gart_size = 512; 879 } 880 rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20; 881 882 /* AGP mode can only be -1, 1, 2, 4, 8 */ 883 switch (radeon_agpmode) { 884 case -1: 885 case 0: 886 case 1: 887 case 2: 888 case 4: 889 case 8: 890 break; 891 default: 892 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: " 893 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode); 894 radeon_agpmode = 0; 895 break; 896 } 897 } 898 899 /** 900 * radeon_switcheroo_quirk_long_wakeup - return true if longer d3 delay is 901 * needed for waking up. 902 * 903 * @pdev: pci dev pointer 904 */ 905 static bool radeon_switcheroo_quirk_long_wakeup(struct pci_dev *pdev) 906 { 907 908 /* 6600m in a macbook pro */ 909 if (pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE && 910 pdev->subsystem_device == 0x00e2) { 911 printk(KERN_INFO "radeon: quirking longer d3 wakeup delay\n"); 912 return true; 913 } 914 915 return false; 916 } 917 918 /** 919 * radeon_switcheroo_set_state - set switcheroo state 920 * 921 * @pdev: pci dev pointer 922 * @state: vga switcheroo state 923 * 924 * Callback for the switcheroo driver. Suspends or resumes the 925 * the asics before or after it is powered up using ACPI methods. 926 */ 927 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) 928 { 929 struct drm_device *dev = pci_get_drvdata(pdev); 930 pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; 931 if (state == VGA_SWITCHEROO_ON) { 932 unsigned d3_delay = dev->pdev->d3_delay; 933 934 printk(KERN_INFO "radeon: switched on\n"); 935 /* don't suspend or resume card normally */ 936 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; 937 938 if (d3_delay < 20 && radeon_switcheroo_quirk_long_wakeup(pdev)) 939 dev->pdev->d3_delay = 20; 940 941 radeon_resume_kms(dev); 942 943 dev->pdev->d3_delay = d3_delay; 944 945 dev->switch_power_state = DRM_SWITCH_POWER_ON; 946 drm_kms_helper_poll_enable(dev); 947 } else { 948 printk(KERN_INFO "radeon: switched off\n"); 949 drm_kms_helper_poll_disable(dev); 950 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; 951 radeon_suspend_kms(dev, pmm); 952 dev->switch_power_state = DRM_SWITCH_POWER_OFF; 953 } 954 } 955 956 /** 957 * radeon_switcheroo_can_switch - see if switcheroo state can change 958 * 959 * @pdev: pci dev pointer 960 * 961 * Callback for the switcheroo driver. Check of the switcheroo 962 * state can be changed. 963 * Returns true if the state can be changed, false if not. 964 */ 965 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev) 966 { 967 struct drm_device *dev = pci_get_drvdata(pdev); 968 bool can_switch; 969 970 spin_lock(&dev->count_lock); 971 can_switch = (dev->open_count == 0); 972 spin_unlock(&dev->count_lock); 973 return can_switch; 974 } 975 976 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = { 977 .set_gpu_state = radeon_switcheroo_set_state, 978 .reprobe = NULL, 979 .can_switch = radeon_switcheroo_can_switch, 980 }; 981 982 /** 983 * radeon_device_init - initialize the driver 984 * 985 * @rdev: radeon_device pointer 986 * @pdev: drm dev pointer 987 * @pdev: pci dev pointer 988 * @flags: driver flags 989 * 990 * Initializes the driver info and hw (all asics). 991 * Returns 0 for success or an error on failure. 992 * Called at driver startup. 993 */ 994 int radeon_device_init(struct radeon_device *rdev, 995 struct drm_device *ddev, 996 struct pci_dev *pdev, 997 uint32_t flags) 998 { 999 int r, i; 1000 int dma_bits; 1001 1002 rdev->shutdown = false; 1003 rdev->dev = &pdev->dev; 1004 rdev->ddev = ddev; 1005 rdev->pdev = pdev; 1006 rdev->flags = flags; 1007 rdev->family = flags & RADEON_FAMILY_MASK; 1008 rdev->is_atom_bios = false; 1009 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT; 1010 rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024; 1011 rdev->accel_working = false; 1012 /* set up ring ids */ 1013 for (i = 0; i < RADEON_NUM_RINGS; i++) { 1014 rdev->ring[i].idx = i; 1015 } 1016 1017 DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n", 1018 radeon_family_name[rdev->family], pdev->vendor, pdev->device, 1019 pdev->subsystem_vendor, pdev->subsystem_device); 1020 1021 /* mutex initialization are all done here so we 1022 * can recall function without having locking issues */ 1023 mutex_init(&rdev->ring_lock); 1024 mutex_init(&rdev->dc_hw_i2c_mutex); 1025 atomic_set(&rdev->ih.lock, 0); 1026 mutex_init(&rdev->gem.mutex); 1027 mutex_init(&rdev->pm.mutex); 1028 mutex_init(&rdev->gpu_clock_mutex); 1029 init_rwsem(&rdev->pm.mclk_lock); 1030 init_rwsem(&rdev->exclusive_lock); 1031 init_waitqueue_head(&rdev->irq.vblank_queue); 1032 r = radeon_gem_init(rdev); 1033 if (r) 1034 return r; 1035 /* initialize vm here */ 1036 mutex_init(&rdev->vm_manager.lock); 1037 /* Adjust VM size here. 1038 * Currently set to 4GB ((1 << 20) 4k pages). 1039 * Max GPUVM size for cayman and SI is 40 bits. 1040 */ 1041 rdev->vm_manager.max_pfn = 1 << 20; 1042 INIT_LIST_HEAD(&rdev->vm_manager.lru_vm); 1043 1044 /* Set asic functions */ 1045 r = radeon_asic_init(rdev); 1046 if (r) 1047 return r; 1048 radeon_check_arguments(rdev); 1049 1050 /* all of the newer IGP chips have an internal gart 1051 * However some rs4xx report as AGP, so remove that here. 1052 */ 1053 if ((rdev->family >= CHIP_RS400) && 1054 (rdev->flags & RADEON_IS_IGP)) { 1055 rdev->flags &= ~RADEON_IS_AGP; 1056 } 1057 1058 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) { 1059 radeon_agp_disable(rdev); 1060 } 1061 1062 /* set DMA mask + need_dma32 flags. 1063 * PCIE - can handle 40-bits. 1064 * IGP - can handle 40-bits 1065 * AGP - generally dma32 is safest 1066 * PCI - dma32 for legacy pci gart, 40 bits on newer asics 1067 */ 1068 rdev->need_dma32 = false; 1069 if (rdev->flags & RADEON_IS_AGP) 1070 rdev->need_dma32 = true; 1071 if ((rdev->flags & RADEON_IS_PCI) && 1072 (rdev->family <= CHIP_RS740)) 1073 rdev->need_dma32 = true; 1074 1075 dma_bits = rdev->need_dma32 ? 32 : 40; 1076 r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits)); 1077 if (r) { 1078 rdev->need_dma32 = true; 1079 dma_bits = 32; 1080 printk(KERN_WARNING "radeon: No suitable DMA available.\n"); 1081 } 1082 r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits)); 1083 if (r) { 1084 pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32)); 1085 printk(KERN_WARNING "radeon: No coherent DMA available.\n"); 1086 } 1087 1088 /* Registers mapping */ 1089 /* TODO: block userspace mapping of io register */ 1090 spin_lock_init(&rdev->mmio_idx_lock); 1091 rdev->rmmio_base = pci_resource_start(rdev->pdev, 2); 1092 rdev->rmmio_size = pci_resource_len(rdev->pdev, 2); 1093 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size); 1094 if (rdev->rmmio == NULL) { 1095 return -ENOMEM; 1096 } 1097 DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base); 1098 DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size); 1099 1100 /* io port mapping */ 1101 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { 1102 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) { 1103 rdev->rio_mem_size = pci_resource_len(rdev->pdev, i); 1104 rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size); 1105 break; 1106 } 1107 } 1108 if (rdev->rio_mem == NULL) 1109 DRM_ERROR("Unable to find PCI I/O BAR\n"); 1110 1111 /* if we have > 1 VGA cards, then disable the radeon VGA resources */ 1112 /* this will fail for cards that aren't VGA class devices, just 1113 * ignore it */ 1114 vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode); 1115 vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops); 1116 1117 r = radeon_init(rdev); 1118 if (r) 1119 return r; 1120 1121 r = radeon_ib_ring_tests(rdev); 1122 if (r) 1123 DRM_ERROR("ib ring test failed (%d).\n", r); 1124 1125 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) { 1126 /* Acceleration not working on AGP card try again 1127 * with fallback to PCI or PCIE GART 1128 */ 1129 radeon_asic_reset(rdev); 1130 radeon_fini(rdev); 1131 radeon_agp_disable(rdev); 1132 r = radeon_init(rdev); 1133 if (r) 1134 return r; 1135 } 1136 if ((radeon_testing & 1)) { 1137 radeon_test_moves(rdev); 1138 } 1139 if ((radeon_testing & 2)) { 1140 radeon_test_syncing(rdev); 1141 } 1142 if (radeon_benchmarking) { 1143 radeon_benchmark(rdev, radeon_benchmarking); 1144 } 1145 return 0; 1146 } 1147 1148 static void radeon_debugfs_remove_files(struct radeon_device *rdev); 1149 1150 /** 1151 * radeon_device_fini - tear down the driver 1152 * 1153 * @rdev: radeon_device pointer 1154 * 1155 * Tear down the driver info (all asics). 1156 * Called at driver shutdown. 1157 */ 1158 void radeon_device_fini(struct radeon_device *rdev) 1159 { 1160 DRM_INFO("radeon: finishing device.\n"); 1161 rdev->shutdown = true; 1162 /* evict vram memory */ 1163 radeon_bo_evict_vram(rdev); 1164 radeon_fini(rdev); 1165 vga_switcheroo_unregister_client(rdev->pdev); 1166 vga_client_register(rdev->pdev, NULL, NULL, NULL); 1167 if (rdev->rio_mem) 1168 pci_iounmap(rdev->pdev, rdev->rio_mem); 1169 rdev->rio_mem = NULL; 1170 iounmap(rdev->rmmio); 1171 rdev->rmmio = NULL; 1172 radeon_debugfs_remove_files(rdev); 1173 } 1174 1175 1176 /* 1177 * Suspend & resume. 1178 */ 1179 /** 1180 * radeon_suspend_kms - initiate device suspend 1181 * 1182 * @pdev: drm dev pointer 1183 * @state: suspend state 1184 * 1185 * Puts the hw in the suspend state (all asics). 1186 * Returns 0 for success or an error on failure. 1187 * Called at driver suspend. 1188 */ 1189 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state) 1190 { 1191 struct radeon_device *rdev; 1192 struct drm_crtc *crtc; 1193 struct drm_connector *connector; 1194 int i, r; 1195 bool force_completion = false; 1196 1197 if (dev == NULL || dev->dev_private == NULL) { 1198 return -ENODEV; 1199 } 1200 if (state.event == PM_EVENT_PRETHAW) { 1201 return 0; 1202 } 1203 rdev = dev->dev_private; 1204 1205 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) 1206 return 0; 1207 1208 drm_kms_helper_poll_disable(dev); 1209 1210 /* turn off display hw */ 1211 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1212 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); 1213 } 1214 1215 /* unpin the front buffers */ 1216 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 1217 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb); 1218 struct radeon_bo *robj; 1219 1220 if (rfb == NULL || rfb->obj == NULL) { 1221 continue; 1222 } 1223 robj = gem_to_radeon_bo(rfb->obj); 1224 /* don't unpin kernel fb objects */ 1225 if (!radeon_fbdev_robj_is_fb(rdev, robj)) { 1226 r = radeon_bo_reserve(robj, false); 1227 if (r == 0) { 1228 radeon_bo_unpin(robj); 1229 radeon_bo_unreserve(robj); 1230 } 1231 } 1232 } 1233 /* evict vram memory */ 1234 radeon_bo_evict_vram(rdev); 1235 1236 mutex_lock(&rdev->ring_lock); 1237 /* wait for gpu to finish processing current batch */ 1238 for (i = 0; i < RADEON_NUM_RINGS; i++) { 1239 r = radeon_fence_wait_empty_locked(rdev, i); 1240 if (r) { 1241 /* delay GPU reset to resume */ 1242 force_completion = true; 1243 } 1244 } 1245 if (force_completion) { 1246 radeon_fence_driver_force_completion(rdev); 1247 } 1248 mutex_unlock(&rdev->ring_lock); 1249 1250 radeon_save_bios_scratch_regs(rdev); 1251 1252 radeon_pm_suspend(rdev); 1253 radeon_suspend(rdev); 1254 radeon_hpd_fini(rdev); 1255 /* evict remaining vram memory */ 1256 radeon_bo_evict_vram(rdev); 1257 1258 radeon_agp_suspend(rdev); 1259 1260 pci_save_state(dev->pdev); 1261 if (state.event == PM_EVENT_SUSPEND) { 1262 /* Shut down the device */ 1263 pci_disable_device(dev->pdev); 1264 pci_set_power_state(dev->pdev, PCI_D3hot); 1265 } 1266 console_lock(); 1267 radeon_fbdev_set_suspend(rdev, 1); 1268 console_unlock(); 1269 return 0; 1270 } 1271 1272 /** 1273 * radeon_resume_kms - initiate device resume 1274 * 1275 * @pdev: drm dev pointer 1276 * 1277 * Bring the hw back to operating state (all asics). 1278 * Returns 0 for success or an error on failure. 1279 * Called at driver resume. 1280 */ 1281 int radeon_resume_kms(struct drm_device *dev) 1282 { 1283 struct drm_connector *connector; 1284 struct radeon_device *rdev = dev->dev_private; 1285 int r; 1286 1287 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) 1288 return 0; 1289 1290 console_lock(); 1291 pci_set_power_state(dev->pdev, PCI_D0); 1292 pci_restore_state(dev->pdev); 1293 if (pci_enable_device(dev->pdev)) { 1294 console_unlock(); 1295 return -1; 1296 } 1297 /* resume AGP if in use */ 1298 radeon_agp_resume(rdev); 1299 radeon_resume(rdev); 1300 1301 r = radeon_ib_ring_tests(rdev); 1302 if (r) 1303 DRM_ERROR("ib ring test failed (%d).\n", r); 1304 1305 radeon_pm_resume(rdev); 1306 radeon_restore_bios_scratch_regs(rdev); 1307 1308 radeon_fbdev_set_suspend(rdev, 0); 1309 console_unlock(); 1310 1311 /* init dig PHYs, disp eng pll */ 1312 if (rdev->is_atom_bios) { 1313 radeon_atom_encoder_init(rdev); 1314 radeon_atom_disp_eng_pll_init(rdev); 1315 /* turn on the BL */ 1316 if (rdev->mode_info.bl_encoder) { 1317 u8 bl_level = radeon_get_backlight_level(rdev, 1318 rdev->mode_info.bl_encoder); 1319 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder, 1320 bl_level); 1321 } 1322 } 1323 /* reset hpd state */ 1324 radeon_hpd_init(rdev); 1325 /* blat the mode back in */ 1326 drm_helper_resume_force_mode(dev); 1327 /* turn on display hw */ 1328 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1329 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); 1330 } 1331 1332 drm_kms_helper_poll_enable(dev); 1333 return 0; 1334 } 1335 1336 /** 1337 * radeon_gpu_reset - reset the asic 1338 * 1339 * @rdev: radeon device pointer 1340 * 1341 * Attempt the reset the GPU if it has hung (all asics). 1342 * Returns 0 for success or an error on failure. 1343 */ 1344 int radeon_gpu_reset(struct radeon_device *rdev) 1345 { 1346 unsigned ring_sizes[RADEON_NUM_RINGS]; 1347 uint32_t *ring_data[RADEON_NUM_RINGS]; 1348 1349 bool saved = false; 1350 1351 int i, r; 1352 int resched; 1353 1354 down_write(&rdev->exclusive_lock); 1355 radeon_save_bios_scratch_regs(rdev); 1356 /* block TTM */ 1357 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev); 1358 radeon_suspend(rdev); 1359 1360 for (i = 0; i < RADEON_NUM_RINGS; ++i) { 1361 ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i], 1362 &ring_data[i]); 1363 if (ring_sizes[i]) { 1364 saved = true; 1365 dev_info(rdev->dev, "Saved %d dwords of commands " 1366 "on ring %d.\n", ring_sizes[i], i); 1367 } 1368 } 1369 1370 retry: 1371 r = radeon_asic_reset(rdev); 1372 if (!r) { 1373 dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n"); 1374 radeon_resume(rdev); 1375 } 1376 1377 radeon_restore_bios_scratch_regs(rdev); 1378 1379 if (!r) { 1380 for (i = 0; i < RADEON_NUM_RINGS; ++i) { 1381 radeon_ring_restore(rdev, &rdev->ring[i], 1382 ring_sizes[i], ring_data[i]); 1383 ring_sizes[i] = 0; 1384 ring_data[i] = NULL; 1385 } 1386 1387 r = radeon_ib_ring_tests(rdev); 1388 if (r) { 1389 dev_err(rdev->dev, "ib ring test failed (%d).\n", r); 1390 if (saved) { 1391 saved = false; 1392 radeon_suspend(rdev); 1393 goto retry; 1394 } 1395 } 1396 } else { 1397 radeon_fence_driver_force_completion(rdev); 1398 for (i = 0; i < RADEON_NUM_RINGS; ++i) { 1399 kfree(ring_data[i]); 1400 } 1401 } 1402 1403 drm_helper_resume_force_mode(rdev->ddev); 1404 1405 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched); 1406 if (r) { 1407 /* bad news, how to tell it to userspace ? */ 1408 dev_info(rdev->dev, "GPU reset failed\n"); 1409 } 1410 1411 up_write(&rdev->exclusive_lock); 1412 return r; 1413 } 1414 1415 1416 /* 1417 * Debugfs 1418 */ 1419 int radeon_debugfs_add_files(struct radeon_device *rdev, 1420 struct drm_info_list *files, 1421 unsigned nfiles) 1422 { 1423 unsigned i; 1424 1425 for (i = 0; i < rdev->debugfs_count; i++) { 1426 if (rdev->debugfs[i].files == files) { 1427 /* Already registered */ 1428 return 0; 1429 } 1430 } 1431 1432 i = rdev->debugfs_count + 1; 1433 if (i > RADEON_DEBUGFS_MAX_COMPONENTS) { 1434 DRM_ERROR("Reached maximum number of debugfs components.\n"); 1435 DRM_ERROR("Report so we increase " 1436 "RADEON_DEBUGFS_MAX_COMPONENTS.\n"); 1437 return -EINVAL; 1438 } 1439 rdev->debugfs[rdev->debugfs_count].files = files; 1440 rdev->debugfs[rdev->debugfs_count].num_files = nfiles; 1441 rdev->debugfs_count = i; 1442 #if defined(CONFIG_DEBUG_FS) 1443 drm_debugfs_create_files(files, nfiles, 1444 rdev->ddev->control->debugfs_root, 1445 rdev->ddev->control); 1446 drm_debugfs_create_files(files, nfiles, 1447 rdev->ddev->primary->debugfs_root, 1448 rdev->ddev->primary); 1449 #endif 1450 return 0; 1451 } 1452 1453 static void radeon_debugfs_remove_files(struct radeon_device *rdev) 1454 { 1455 #if defined(CONFIG_DEBUG_FS) 1456 unsigned i; 1457 1458 for (i = 0; i < rdev->debugfs_count; i++) { 1459 drm_debugfs_remove_files(rdev->debugfs[i].files, 1460 rdev->debugfs[i].num_files, 1461 rdev->ddev->control); 1462 drm_debugfs_remove_files(rdev->debugfs[i].files, 1463 rdev->debugfs[i].num_files, 1464 rdev->ddev->primary); 1465 } 1466 #endif 1467 } 1468 1469 #if defined(CONFIG_DEBUG_FS) 1470 int radeon_debugfs_init(struct drm_minor *minor) 1471 { 1472 return 0; 1473 } 1474 1475 void radeon_debugfs_cleanup(struct drm_minor *minor) 1476 { 1477 } 1478 #endif 1479