1 /* 2 * Copyright 2009 Jerome Glisse. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 19 * USE OR OTHER DEALINGS IN THE SOFTWARE. 20 * 21 * The above copyright notice and this permission notice (including the 22 * next paragraph) shall be included in all copies or substantial portions 23 * of the Software. 24 * 25 */ 26 /* 27 * Authors: 28 * Jerome Glisse <glisse@freedesktop.org> 29 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> 30 * Dave Airlie 31 */ 32 #include <linux/list.h> 33 #include <linux/slab.h> 34 #include <drm/drmP.h> 35 #include <drm/radeon_drm.h> 36 #include "radeon.h" 37 #include "radeon_trace.h" 38 39 40 int radeon_ttm_init(struct radeon_device *rdev); 41 void radeon_ttm_fini(struct radeon_device *rdev); 42 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo); 43 44 /* 45 * To exclude mutual BO access we rely on bo_reserve exclusion, as all 46 * function are calling it. 47 */ 48 49 static void radeon_update_memory_usage(struct radeon_bo *bo, 50 unsigned mem_type, int sign) 51 { 52 struct radeon_device *rdev = bo->rdev; 53 u64 size = (u64)bo->tbo.num_pages << PAGE_SHIFT; 54 55 switch (mem_type) { 56 case TTM_PL_TT: 57 if (sign > 0) 58 atomic64_add(size, &rdev->gtt_usage); 59 else 60 atomic64_sub(size, &rdev->gtt_usage); 61 break; 62 case TTM_PL_VRAM: 63 if (sign > 0) 64 atomic64_add(size, &rdev->vram_usage); 65 else 66 atomic64_sub(size, &rdev->vram_usage); 67 break; 68 } 69 } 70 71 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo) 72 { 73 struct radeon_bo *bo; 74 75 bo = container_of(tbo, struct radeon_bo, tbo); 76 77 radeon_update_memory_usage(bo, bo->tbo.mem.mem_type, -1); 78 79 mutex_lock(&bo->rdev->gem.mutex); 80 list_del_init(&bo->list); 81 mutex_unlock(&bo->rdev->gem.mutex); 82 radeon_bo_clear_surface_reg(bo); 83 WARN_ON(!list_empty(&bo->va)); 84 drm_gem_object_release(&bo->gem_base); 85 kfree(bo); 86 } 87 88 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo) 89 { 90 if (bo->destroy == &radeon_ttm_bo_destroy) 91 return true; 92 return false; 93 } 94 95 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) 96 { 97 u32 c = 0, i; 98 99 rbo->placement.placement = rbo->placements; 100 rbo->placement.busy_placement = rbo->placements; 101 if (domain & RADEON_GEM_DOMAIN_VRAM) { 102 /* Try placing BOs which don't need CPU access outside of the 103 * CPU accessible part of VRAM 104 */ 105 if ((rbo->flags & RADEON_GEM_NO_CPU_ACCESS) && 106 rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size) { 107 rbo->placements[c].fpfn = 108 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 109 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 110 TTM_PL_FLAG_UNCACHED | 111 TTM_PL_FLAG_VRAM; 112 } 113 114 rbo->placements[c].fpfn = 0; 115 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 116 TTM_PL_FLAG_UNCACHED | 117 TTM_PL_FLAG_VRAM; 118 } 119 120 if (domain & RADEON_GEM_DOMAIN_GTT) { 121 if (rbo->flags & RADEON_GEM_GTT_UC) { 122 rbo->placements[c].fpfn = 0; 123 rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED | 124 TTM_PL_FLAG_TT; 125 126 } else if ((rbo->flags & RADEON_GEM_GTT_WC) || 127 (rbo->rdev->flags & RADEON_IS_AGP)) { 128 rbo->placements[c].fpfn = 0; 129 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 130 TTM_PL_FLAG_UNCACHED | 131 TTM_PL_FLAG_TT; 132 } else { 133 rbo->placements[c].fpfn = 0; 134 rbo->placements[c++].flags = TTM_PL_FLAG_CACHED | 135 TTM_PL_FLAG_TT; 136 } 137 } 138 139 if (domain & RADEON_GEM_DOMAIN_CPU) { 140 if (rbo->flags & RADEON_GEM_GTT_UC) { 141 rbo->placements[c].fpfn = 0; 142 rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED | 143 TTM_PL_FLAG_SYSTEM; 144 145 } else if ((rbo->flags & RADEON_GEM_GTT_WC) || 146 rbo->rdev->flags & RADEON_IS_AGP) { 147 rbo->placements[c].fpfn = 0; 148 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 149 TTM_PL_FLAG_UNCACHED | 150 TTM_PL_FLAG_SYSTEM; 151 } else { 152 rbo->placements[c].fpfn = 0; 153 rbo->placements[c++].flags = TTM_PL_FLAG_CACHED | 154 TTM_PL_FLAG_SYSTEM; 155 } 156 } 157 if (!c) { 158 rbo->placements[c].fpfn = 0; 159 rbo->placements[c++].flags = TTM_PL_MASK_CACHING | 160 TTM_PL_FLAG_SYSTEM; 161 } 162 163 rbo->placement.num_placement = c; 164 rbo->placement.num_busy_placement = c; 165 166 for (i = 0; i < c; ++i) { 167 if ((rbo->flags & RADEON_GEM_CPU_ACCESS) && 168 (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) && 169 !rbo->placements[i].fpfn) 170 rbo->placements[i].lpfn = 171 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 172 else 173 rbo->placements[i].lpfn = 0; 174 } 175 } 176 177 int radeon_bo_create(struct radeon_device *rdev, 178 unsigned long size, int byte_align, bool kernel, 179 u32 domain, u32 flags, struct sg_table *sg, 180 struct reservation_object *resv, 181 struct radeon_bo **bo_ptr) 182 { 183 struct radeon_bo *bo; 184 enum ttm_bo_type type; 185 unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT; 186 size_t acc_size; 187 int r; 188 189 size = ALIGN(size, PAGE_SIZE); 190 191 if (kernel) { 192 type = ttm_bo_type_kernel; 193 } else if (sg) { 194 type = ttm_bo_type_sg; 195 } else { 196 type = ttm_bo_type_device; 197 } 198 *bo_ptr = NULL; 199 200 acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size, 201 sizeof(struct radeon_bo)); 202 203 bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL); 204 if (bo == NULL) 205 return -ENOMEM; 206 r = drm_gem_object_init(rdev->ddev, &bo->gem_base, size); 207 if (unlikely(r)) { 208 kfree(bo); 209 return r; 210 } 211 bo->rdev = rdev; 212 bo->surface_reg = -1; 213 INIT_LIST_HEAD(&bo->list); 214 INIT_LIST_HEAD(&bo->va); 215 bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM | 216 RADEON_GEM_DOMAIN_GTT | 217 RADEON_GEM_DOMAIN_CPU); 218 219 bo->flags = flags; 220 /* PCI GART is always snooped */ 221 if (!(rdev->flags & RADEON_IS_PCIE)) 222 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); 223 224 #ifdef CONFIG_X86_32 225 /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit 226 * See https://bugs.freedesktop.org/show_bug.cgi?id=84627 227 */ 228 bo->flags &= ~RADEON_GEM_GTT_WC; 229 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT) 230 /* Don't try to enable write-combining when it can't work, or things 231 * may be slow 232 * See https://bugs.freedesktop.org/show_bug.cgi?id=88758 233 */ 234 235 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \ 236 thanks to write-combining 237 238 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " 239 "better performance thanks to write-combining\n"); 240 bo->flags &= ~RADEON_GEM_GTT_WC; 241 #endif 242 243 radeon_ttm_placement_from_domain(bo, domain); 244 /* Kernel allocation are uninterruptible */ 245 down_read(&rdev->pm.mclk_lock); 246 r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type, 247 &bo->placement, page_align, !kernel, NULL, 248 acc_size, sg, resv, &radeon_ttm_bo_destroy); 249 up_read(&rdev->pm.mclk_lock); 250 if (unlikely(r != 0)) { 251 return r; 252 } 253 *bo_ptr = bo; 254 255 trace_radeon_bo_create(bo); 256 257 return 0; 258 } 259 260 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr) 261 { 262 bool is_iomem; 263 int r; 264 265 if (bo->kptr) { 266 if (ptr) { 267 *ptr = bo->kptr; 268 } 269 return 0; 270 } 271 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 272 if (r) { 273 return r; 274 } 275 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 276 if (ptr) { 277 *ptr = bo->kptr; 278 } 279 radeon_bo_check_tiling(bo, 0, 0); 280 return 0; 281 } 282 283 void radeon_bo_kunmap(struct radeon_bo *bo) 284 { 285 if (bo->kptr == NULL) 286 return; 287 bo->kptr = NULL; 288 radeon_bo_check_tiling(bo, 0, 0); 289 ttm_bo_kunmap(&bo->kmap); 290 } 291 292 struct radeon_bo *radeon_bo_ref(struct radeon_bo *bo) 293 { 294 if (bo == NULL) 295 return NULL; 296 297 ttm_bo_reference(&bo->tbo); 298 return bo; 299 } 300 301 void radeon_bo_unref(struct radeon_bo **bo) 302 { 303 struct ttm_buffer_object *tbo; 304 struct radeon_device *rdev; 305 306 if ((*bo) == NULL) 307 return; 308 rdev = (*bo)->rdev; 309 tbo = &((*bo)->tbo); 310 ttm_bo_unref(&tbo); 311 if (tbo == NULL) 312 *bo = NULL; 313 } 314 315 int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset, 316 u64 *gpu_addr) 317 { 318 int r, i; 319 320 if (radeon_ttm_tt_has_userptr(bo->tbo.ttm)) 321 return -EPERM; 322 323 if (bo->pin_count) { 324 bo->pin_count++; 325 if (gpu_addr) 326 *gpu_addr = radeon_bo_gpu_offset(bo); 327 328 if (max_offset != 0) { 329 u64 domain_start; 330 331 if (domain == RADEON_GEM_DOMAIN_VRAM) 332 domain_start = bo->rdev->mc.vram_start; 333 else 334 domain_start = bo->rdev->mc.gtt_start; 335 WARN_ON_ONCE(max_offset < 336 (radeon_bo_gpu_offset(bo) - domain_start)); 337 } 338 339 return 0; 340 } 341 radeon_ttm_placement_from_domain(bo, domain); 342 for (i = 0; i < bo->placement.num_placement; i++) { 343 /* force to pin into visible video ram */ 344 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) && 345 !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) && 346 (!max_offset || max_offset > bo->rdev->mc.visible_vram_size)) 347 bo->placements[i].lpfn = 348 bo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 349 else 350 bo->placements[i].lpfn = max_offset >> PAGE_SHIFT; 351 352 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; 353 } 354 355 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 356 if (likely(r == 0)) { 357 bo->pin_count = 1; 358 if (gpu_addr != NULL) 359 *gpu_addr = radeon_bo_gpu_offset(bo); 360 if (domain == RADEON_GEM_DOMAIN_VRAM) 361 bo->rdev->vram_pin_size += radeon_bo_size(bo); 362 else 363 bo->rdev->gart_pin_size += radeon_bo_size(bo); 364 } else { 365 dev_err(bo->rdev->dev, "%p pin failed\n", bo); 366 } 367 return r; 368 } 369 370 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr) 371 { 372 return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr); 373 } 374 375 int radeon_bo_unpin(struct radeon_bo *bo) 376 { 377 int r, i; 378 379 if (!bo->pin_count) { 380 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo); 381 return 0; 382 } 383 bo->pin_count--; 384 if (bo->pin_count) 385 return 0; 386 for (i = 0; i < bo->placement.num_placement; i++) { 387 bo->placements[i].lpfn = 0; 388 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; 389 } 390 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 391 if (likely(r == 0)) { 392 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 393 bo->rdev->vram_pin_size -= radeon_bo_size(bo); 394 else 395 bo->rdev->gart_pin_size -= radeon_bo_size(bo); 396 } else { 397 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo); 398 } 399 return r; 400 } 401 402 int radeon_bo_evict_vram(struct radeon_device *rdev) 403 { 404 /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */ 405 if (0 && (rdev->flags & RADEON_IS_IGP)) { 406 if (rdev->mc.igp_sideport_enabled == false) 407 /* Useless to evict on IGP chips */ 408 return 0; 409 } 410 return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM); 411 } 412 413 void radeon_bo_force_delete(struct radeon_device *rdev) 414 { 415 struct radeon_bo *bo, *n; 416 417 if (list_empty(&rdev->gem.objects)) { 418 return; 419 } 420 dev_err(rdev->dev, "Userspace still has active objects !\n"); 421 list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) { 422 dev_err(rdev->dev, "%p %p %lu %lu force free\n", 423 &bo->gem_base, bo, (unsigned long)bo->gem_base.size, 424 *((unsigned long *)&bo->gem_base.refcount)); 425 mutex_lock(&bo->rdev->gem.mutex); 426 list_del_init(&bo->list); 427 mutex_unlock(&bo->rdev->gem.mutex); 428 /* this should unref the ttm bo */ 429 drm_gem_object_unreference_unlocked(&bo->gem_base); 430 } 431 } 432 433 int radeon_bo_init(struct radeon_device *rdev) 434 { 435 /* Add an MTRR for the VRAM */ 436 if (!rdev->fastfb_working) { 437 rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base, 438 rdev->mc.aper_size); 439 } 440 DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n", 441 rdev->mc.mc_vram_size >> 20, 442 (unsigned long long)rdev->mc.aper_size >> 20); 443 DRM_INFO("RAM width %dbits %cDR\n", 444 rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S'); 445 return radeon_ttm_init(rdev); 446 } 447 448 void radeon_bo_fini(struct radeon_device *rdev) 449 { 450 radeon_ttm_fini(rdev); 451 arch_phys_wc_del(rdev->mc.vram_mtrr); 452 } 453 454 /* Returns how many bytes TTM can move per IB. 455 */ 456 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev) 457 { 458 u64 real_vram_size = rdev->mc.real_vram_size; 459 u64 vram_usage = atomic64_read(&rdev->vram_usage); 460 461 /* This function is based on the current VRAM usage. 462 * 463 * - If all of VRAM is free, allow relocating the number of bytes that 464 * is equal to 1/4 of the size of VRAM for this IB. 465 466 * - If more than one half of VRAM is occupied, only allow relocating 467 * 1 MB of data for this IB. 468 * 469 * - From 0 to one half of used VRAM, the threshold decreases 470 * linearly. 471 * __________________ 472 * 1/4 of -|\ | 473 * VRAM | \ | 474 * | \ | 475 * | \ | 476 * | \ | 477 * | \ | 478 * | \ | 479 * | \________|1 MB 480 * |----------------| 481 * VRAM 0 % 100 % 482 * used used 483 * 484 * Note: It's a threshold, not a limit. The threshold must be crossed 485 * for buffer relocations to stop, so any buffer of an arbitrary size 486 * can be moved as long as the threshold isn't crossed before 487 * the relocation takes place. We don't want to disable buffer 488 * relocations completely. 489 * 490 * The idea is that buffers should be placed in VRAM at creation time 491 * and TTM should only do a minimum number of relocations during 492 * command submission. In practice, you need to submit at least 493 * a dozen IBs to move all buffers to VRAM if they are in GTT. 494 * 495 * Also, things can get pretty crazy under memory pressure and actual 496 * VRAM usage can change a lot, so playing safe even at 50% does 497 * consistently increase performance. 498 */ 499 500 u64 half_vram = real_vram_size >> 1; 501 u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage; 502 u64 bytes_moved_threshold = half_free_vram >> 1; 503 return max(bytes_moved_threshold, 1024*1024ull); 504 } 505 506 int radeon_bo_list_validate(struct radeon_device *rdev, 507 struct ww_acquire_ctx *ticket, 508 struct list_head *head, int ring) 509 { 510 struct radeon_bo_list *lobj; 511 struct list_head duplicates; 512 int r; 513 u64 bytes_moved = 0, initial_bytes_moved; 514 u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev); 515 516 INIT_LIST_HEAD(&duplicates); 517 r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates); 518 if (unlikely(r != 0)) { 519 return r; 520 } 521 522 list_for_each_entry(lobj, head, tv.head) { 523 struct radeon_bo *bo = lobj->robj; 524 if (!bo->pin_count) { 525 u32 domain = lobj->prefered_domains; 526 u32 allowed = lobj->allowed_domains; 527 u32 current_domain = 528 radeon_mem_type_to_domain(bo->tbo.mem.mem_type); 529 530 /* Check if this buffer will be moved and don't move it 531 * if we have moved too many buffers for this IB already. 532 * 533 * Note that this allows moving at least one buffer of 534 * any size, because it doesn't take the current "bo" 535 * into account. We don't want to disallow buffer moves 536 * completely. 537 */ 538 if ((allowed & current_domain) != 0 && 539 (domain & current_domain) == 0 && /* will be moved */ 540 bytes_moved > bytes_moved_threshold) { 541 /* don't move it */ 542 domain = current_domain; 543 } 544 545 retry: 546 radeon_ttm_placement_from_domain(bo, domain); 547 if (ring == R600_RING_TYPE_UVD_INDEX) 548 radeon_uvd_force_into_uvd_segment(bo, allowed); 549 550 initial_bytes_moved = atomic64_read(&rdev->num_bytes_moved); 551 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); 552 bytes_moved += atomic64_read(&rdev->num_bytes_moved) - 553 initial_bytes_moved; 554 555 if (unlikely(r)) { 556 if (r != -ERESTARTSYS && 557 domain != lobj->allowed_domains) { 558 domain = lobj->allowed_domains; 559 goto retry; 560 } 561 ttm_eu_backoff_reservation(ticket, head); 562 return r; 563 } 564 } 565 lobj->gpu_offset = radeon_bo_gpu_offset(bo); 566 lobj->tiling_flags = bo->tiling_flags; 567 } 568 569 list_for_each_entry(lobj, &duplicates, tv.head) { 570 lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj); 571 lobj->tiling_flags = lobj->robj->tiling_flags; 572 } 573 574 return 0; 575 } 576 577 int radeon_bo_get_surface_reg(struct radeon_bo *bo) 578 { 579 struct radeon_device *rdev = bo->rdev; 580 struct radeon_surface_reg *reg; 581 struct radeon_bo *old_object; 582 int steal; 583 int i; 584 585 lockdep_assert_held(&bo->tbo.resv->lock.base); 586 587 if (!bo->tiling_flags) 588 return 0; 589 590 if (bo->surface_reg >= 0) { 591 reg = &rdev->surface_regs[bo->surface_reg]; 592 i = bo->surface_reg; 593 goto out; 594 } 595 596 steal = -1; 597 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) { 598 599 reg = &rdev->surface_regs[i]; 600 if (!reg->bo) 601 break; 602 603 old_object = reg->bo; 604 if (old_object->pin_count == 0) 605 steal = i; 606 } 607 608 /* if we are all out */ 609 if (i == RADEON_GEM_MAX_SURFACES) { 610 if (steal == -1) 611 return -ENOMEM; 612 /* find someone with a surface reg and nuke their BO */ 613 reg = &rdev->surface_regs[steal]; 614 old_object = reg->bo; 615 /* blow away the mapping */ 616 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object); 617 ttm_bo_unmap_virtual(&old_object->tbo); 618 old_object->surface_reg = -1; 619 i = steal; 620 } 621 622 bo->surface_reg = i; 623 reg->bo = bo; 624 625 out: 626 radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch, 627 bo->tbo.mem.start << PAGE_SHIFT, 628 bo->tbo.num_pages << PAGE_SHIFT); 629 return 0; 630 } 631 632 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo) 633 { 634 struct radeon_device *rdev = bo->rdev; 635 struct radeon_surface_reg *reg; 636 637 if (bo->surface_reg == -1) 638 return; 639 640 reg = &rdev->surface_regs[bo->surface_reg]; 641 radeon_clear_surface_reg(rdev, bo->surface_reg); 642 643 reg->bo = NULL; 644 bo->surface_reg = -1; 645 } 646 647 int radeon_bo_set_tiling_flags(struct radeon_bo *bo, 648 uint32_t tiling_flags, uint32_t pitch) 649 { 650 struct radeon_device *rdev = bo->rdev; 651 int r; 652 653 if (rdev->family >= CHIP_CEDAR) { 654 unsigned bankw, bankh, mtaspect, tilesplit, stilesplit; 655 656 bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK; 657 bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK; 658 mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK; 659 tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK; 660 stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK; 661 switch (bankw) { 662 case 0: 663 case 1: 664 case 2: 665 case 4: 666 case 8: 667 break; 668 default: 669 return -EINVAL; 670 } 671 switch (bankh) { 672 case 0: 673 case 1: 674 case 2: 675 case 4: 676 case 8: 677 break; 678 default: 679 return -EINVAL; 680 } 681 switch (mtaspect) { 682 case 0: 683 case 1: 684 case 2: 685 case 4: 686 case 8: 687 break; 688 default: 689 return -EINVAL; 690 } 691 if (tilesplit > 6) { 692 return -EINVAL; 693 } 694 if (stilesplit > 6) { 695 return -EINVAL; 696 } 697 } 698 r = radeon_bo_reserve(bo, false); 699 if (unlikely(r != 0)) 700 return r; 701 bo->tiling_flags = tiling_flags; 702 bo->pitch = pitch; 703 radeon_bo_unreserve(bo); 704 return 0; 705 } 706 707 void radeon_bo_get_tiling_flags(struct radeon_bo *bo, 708 uint32_t *tiling_flags, 709 uint32_t *pitch) 710 { 711 lockdep_assert_held(&bo->tbo.resv->lock.base); 712 713 if (tiling_flags) 714 *tiling_flags = bo->tiling_flags; 715 if (pitch) 716 *pitch = bo->pitch; 717 } 718 719 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved, 720 bool force_drop) 721 { 722 if (!force_drop) 723 lockdep_assert_held(&bo->tbo.resv->lock.base); 724 725 if (!(bo->tiling_flags & RADEON_TILING_SURFACE)) 726 return 0; 727 728 if (force_drop) { 729 radeon_bo_clear_surface_reg(bo); 730 return 0; 731 } 732 733 if (bo->tbo.mem.mem_type != TTM_PL_VRAM) { 734 if (!has_moved) 735 return 0; 736 737 if (bo->surface_reg >= 0) 738 radeon_bo_clear_surface_reg(bo); 739 return 0; 740 } 741 742 if ((bo->surface_reg >= 0) && !has_moved) 743 return 0; 744 745 return radeon_bo_get_surface_reg(bo); 746 } 747 748 void radeon_bo_move_notify(struct ttm_buffer_object *bo, 749 struct ttm_mem_reg *new_mem) 750 { 751 struct radeon_bo *rbo; 752 753 if (!radeon_ttm_bo_is_radeon_bo(bo)) 754 return; 755 756 rbo = container_of(bo, struct radeon_bo, tbo); 757 radeon_bo_check_tiling(rbo, 0, 1); 758 radeon_vm_bo_invalidate(rbo->rdev, rbo); 759 760 /* update statistics */ 761 if (!new_mem) 762 return; 763 764 radeon_update_memory_usage(rbo, bo->mem.mem_type, -1); 765 radeon_update_memory_usage(rbo, new_mem->mem_type, 1); 766 } 767 768 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo) 769 { 770 struct radeon_device *rdev; 771 struct radeon_bo *rbo; 772 unsigned long offset, size, lpfn; 773 int i, r; 774 775 if (!radeon_ttm_bo_is_radeon_bo(bo)) 776 return 0; 777 rbo = container_of(bo, struct radeon_bo, tbo); 778 radeon_bo_check_tiling(rbo, 0, 0); 779 rdev = rbo->rdev; 780 if (bo->mem.mem_type != TTM_PL_VRAM) 781 return 0; 782 783 size = bo->mem.num_pages << PAGE_SHIFT; 784 offset = bo->mem.start << PAGE_SHIFT; 785 if ((offset + size) <= rdev->mc.visible_vram_size) 786 return 0; 787 788 /* hurrah the memory is not visible ! */ 789 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM); 790 lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT; 791 for (i = 0; i < rbo->placement.num_placement; i++) { 792 /* Force into visible VRAM */ 793 if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) && 794 (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn)) 795 rbo->placements[i].lpfn = lpfn; 796 } 797 r = ttm_bo_validate(bo, &rbo->placement, false, false); 798 if (unlikely(r == -ENOMEM)) { 799 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT); 800 return ttm_bo_validate(bo, &rbo->placement, false, false); 801 } else if (unlikely(r != 0)) { 802 return r; 803 } 804 805 offset = bo->mem.start << PAGE_SHIFT; 806 /* this should never happen */ 807 if ((offset + size) > rdev->mc.visible_vram_size) 808 return -EINVAL; 809 810 return 0; 811 } 812 813 int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait) 814 { 815 int r; 816 817 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, NULL); 818 if (unlikely(r != 0)) 819 return r; 820 if (mem_type) 821 *mem_type = bo->tbo.mem.mem_type; 822 823 r = ttm_bo_wait(&bo->tbo, true, true, no_wait); 824 ttm_bo_unreserve(&bo->tbo); 825 return r; 826 } 827 828 /** 829 * radeon_bo_fence - add fence to buffer object 830 * 831 * @bo: buffer object in question 832 * @fence: fence to add 833 * @shared: true if fence should be added shared 834 * 835 */ 836 void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence, 837 bool shared) 838 { 839 struct reservation_object *resv = bo->tbo.resv; 840 841 if (shared) 842 reservation_object_add_shared_fence(resv, &fence->base); 843 else 844 reservation_object_add_excl_fence(resv, &fence->base); 845 } 846