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 33 #include <linux/io.h> 34 #include <linux/list.h> 35 #include <linux/slab.h> 36 37 #include <drm/drm_cache.h> 38 #include <drm/drm_prime.h> 39 #include <drm/radeon_drm.h> 40 41 #include "radeon.h" 42 #include "radeon_trace.h" 43 44 int radeon_ttm_init(struct radeon_device *rdev); 45 void radeon_ttm_fini(struct radeon_device *rdev); 46 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo); 47 48 /* 49 * To exclude mutual BO access we rely on bo_reserve exclusion, as all 50 * function are calling it. 51 */ 52 53 static void radeon_update_memory_usage(struct radeon_bo *bo, 54 unsigned mem_type, int sign) 55 { 56 struct radeon_device *rdev = bo->rdev; 57 u64 size = (u64)bo->tbo.num_pages << PAGE_SHIFT; 58 59 switch (mem_type) { 60 case TTM_PL_TT: 61 if (sign > 0) 62 atomic64_add(size, &rdev->gtt_usage); 63 else 64 atomic64_sub(size, &rdev->gtt_usage); 65 break; 66 case TTM_PL_VRAM: 67 if (sign > 0) 68 atomic64_add(size, &rdev->vram_usage); 69 else 70 atomic64_sub(size, &rdev->vram_usage); 71 break; 72 } 73 } 74 75 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo) 76 { 77 struct radeon_bo *bo; 78 79 bo = container_of(tbo, struct radeon_bo, tbo); 80 81 radeon_update_memory_usage(bo, bo->tbo.mem.mem_type, -1); 82 83 mutex_lock(&bo->rdev->gem.mutex); 84 list_del_init(&bo->list); 85 mutex_unlock(&bo->rdev->gem.mutex); 86 radeon_bo_clear_surface_reg(bo); 87 WARN_ON_ONCE(!list_empty(&bo->va)); 88 if (bo->tbo.base.import_attach) 89 drm_prime_gem_destroy(&bo->tbo.base, bo->tbo.sg); 90 drm_gem_object_release(&bo->tbo.base); 91 kfree(bo); 92 } 93 94 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo) 95 { 96 if (bo->destroy == &radeon_ttm_bo_destroy) 97 return true; 98 return false; 99 } 100 101 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) 102 { 103 u32 c = 0, i; 104 105 rbo->placement.placement = rbo->placements; 106 rbo->placement.busy_placement = rbo->placements; 107 if (domain & RADEON_GEM_DOMAIN_VRAM) { 108 /* Try placing BOs which don't need CPU access outside of the 109 * CPU accessible part of VRAM 110 */ 111 if ((rbo->flags & RADEON_GEM_NO_CPU_ACCESS) && 112 rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size) { 113 rbo->placements[c].fpfn = 114 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 115 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 116 TTM_PL_FLAG_UNCACHED | 117 TTM_PL_FLAG_VRAM; 118 } 119 120 rbo->placements[c].fpfn = 0; 121 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 122 TTM_PL_FLAG_UNCACHED | 123 TTM_PL_FLAG_VRAM; 124 } 125 126 if (domain & RADEON_GEM_DOMAIN_GTT) { 127 if (rbo->flags & RADEON_GEM_GTT_UC) { 128 rbo->placements[c].fpfn = 0; 129 rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED | 130 TTM_PL_FLAG_TT; 131 132 } else if ((rbo->flags & RADEON_GEM_GTT_WC) || 133 (rbo->rdev->flags & RADEON_IS_AGP)) { 134 rbo->placements[c].fpfn = 0; 135 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 136 TTM_PL_FLAG_UNCACHED | 137 TTM_PL_FLAG_TT; 138 } else { 139 rbo->placements[c].fpfn = 0; 140 rbo->placements[c++].flags = TTM_PL_FLAG_CACHED | 141 TTM_PL_FLAG_TT; 142 } 143 } 144 145 if (domain & RADEON_GEM_DOMAIN_CPU) { 146 if (rbo->flags & RADEON_GEM_GTT_UC) { 147 rbo->placements[c].fpfn = 0; 148 rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED | 149 TTM_PL_FLAG_SYSTEM; 150 151 } else if ((rbo->flags & RADEON_GEM_GTT_WC) || 152 rbo->rdev->flags & RADEON_IS_AGP) { 153 rbo->placements[c].fpfn = 0; 154 rbo->placements[c++].flags = TTM_PL_FLAG_WC | 155 TTM_PL_FLAG_UNCACHED | 156 TTM_PL_FLAG_SYSTEM; 157 } else { 158 rbo->placements[c].fpfn = 0; 159 rbo->placements[c++].flags = TTM_PL_FLAG_CACHED | 160 TTM_PL_FLAG_SYSTEM; 161 } 162 } 163 if (!c) { 164 rbo->placements[c].fpfn = 0; 165 rbo->placements[c++].flags = TTM_PL_MASK_CACHING | 166 TTM_PL_FLAG_SYSTEM; 167 } 168 169 rbo->placement.num_placement = c; 170 rbo->placement.num_busy_placement = c; 171 172 for (i = 0; i < c; ++i) { 173 if ((rbo->flags & RADEON_GEM_CPU_ACCESS) && 174 (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) && 175 !rbo->placements[i].fpfn) 176 rbo->placements[i].lpfn = 177 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 178 else 179 rbo->placements[i].lpfn = 0; 180 } 181 } 182 183 int radeon_bo_create(struct radeon_device *rdev, 184 unsigned long size, int byte_align, bool kernel, 185 u32 domain, u32 flags, struct sg_table *sg, 186 struct dma_resv *resv, 187 struct radeon_bo **bo_ptr) 188 { 189 struct radeon_bo *bo; 190 enum ttm_bo_type type; 191 unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT; 192 size_t acc_size; 193 int r; 194 195 size = ALIGN(size, PAGE_SIZE); 196 197 if (kernel) { 198 type = ttm_bo_type_kernel; 199 } else if (sg) { 200 type = ttm_bo_type_sg; 201 } else { 202 type = ttm_bo_type_device; 203 } 204 *bo_ptr = NULL; 205 206 acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size, 207 sizeof(struct radeon_bo)); 208 209 bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL); 210 if (bo == NULL) 211 return -ENOMEM; 212 drm_gem_private_object_init(rdev->ddev, &bo->tbo.base, size); 213 bo->rdev = rdev; 214 bo->surface_reg = -1; 215 INIT_LIST_HEAD(&bo->list); 216 INIT_LIST_HEAD(&bo->va); 217 bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM | 218 RADEON_GEM_DOMAIN_GTT | 219 RADEON_GEM_DOMAIN_CPU); 220 221 bo->flags = flags; 222 /* PCI GART is always snooped */ 223 if (!(rdev->flags & RADEON_IS_PCIE)) 224 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); 225 226 /* Write-combined CPU mappings of GTT cause GPU hangs with RV6xx 227 * See https://bugs.freedesktop.org/show_bug.cgi?id=91268 228 */ 229 if (rdev->family >= CHIP_RV610 && rdev->family <= CHIP_RV635) 230 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); 231 232 #ifdef CONFIG_X86_32 233 /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit 234 * See https://bugs.freedesktop.org/show_bug.cgi?id=84627 235 */ 236 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); 237 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT) 238 /* Don't try to enable write-combining when it can't work, or things 239 * may be slow 240 * See https://bugs.freedesktop.org/show_bug.cgi?id=88758 241 */ 242 #ifndef CONFIG_COMPILE_TEST 243 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \ 244 thanks to write-combining 245 #endif 246 247 if (bo->flags & RADEON_GEM_GTT_WC) 248 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " 249 "better performance thanks to write-combining\n"); 250 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); 251 #else 252 /* For architectures that don't support WC memory, 253 * mask out the WC flag from the BO 254 */ 255 if (!drm_arch_can_wc_memory()) 256 bo->flags &= ~RADEON_GEM_GTT_WC; 257 #endif 258 259 radeon_ttm_placement_from_domain(bo, domain); 260 /* Kernel allocation are uninterruptible */ 261 down_read(&rdev->pm.mclk_lock); 262 r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type, 263 &bo->placement, page_align, !kernel, acc_size, 264 sg, resv, &radeon_ttm_bo_destroy); 265 up_read(&rdev->pm.mclk_lock); 266 if (unlikely(r != 0)) { 267 return r; 268 } 269 *bo_ptr = bo; 270 271 trace_radeon_bo_create(bo); 272 273 return 0; 274 } 275 276 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr) 277 { 278 bool is_iomem; 279 int r; 280 281 if (bo->kptr) { 282 if (ptr) { 283 *ptr = bo->kptr; 284 } 285 return 0; 286 } 287 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 288 if (r) { 289 return r; 290 } 291 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 292 if (ptr) { 293 *ptr = bo->kptr; 294 } 295 radeon_bo_check_tiling(bo, 0, 0); 296 return 0; 297 } 298 299 void radeon_bo_kunmap(struct radeon_bo *bo) 300 { 301 if (bo->kptr == NULL) 302 return; 303 bo->kptr = NULL; 304 radeon_bo_check_tiling(bo, 0, 0); 305 ttm_bo_kunmap(&bo->kmap); 306 } 307 308 struct radeon_bo *radeon_bo_ref(struct radeon_bo *bo) 309 { 310 if (bo == NULL) 311 return NULL; 312 313 ttm_bo_get(&bo->tbo); 314 return bo; 315 } 316 317 void radeon_bo_unref(struct radeon_bo **bo) 318 { 319 struct ttm_buffer_object *tbo; 320 321 if ((*bo) == NULL) 322 return; 323 tbo = &((*bo)->tbo); 324 ttm_bo_put(tbo); 325 *bo = NULL; 326 } 327 328 int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset, 329 u64 *gpu_addr) 330 { 331 struct ttm_operation_ctx ctx = { false, false }; 332 int r, i; 333 334 if (radeon_ttm_tt_has_userptr(bo->tbo.ttm)) 335 return -EPERM; 336 337 if (bo->pin_count) { 338 bo->pin_count++; 339 if (gpu_addr) 340 *gpu_addr = radeon_bo_gpu_offset(bo); 341 342 if (max_offset != 0) { 343 u64 domain_start; 344 345 if (domain == RADEON_GEM_DOMAIN_VRAM) 346 domain_start = bo->rdev->mc.vram_start; 347 else 348 domain_start = bo->rdev->mc.gtt_start; 349 WARN_ON_ONCE(max_offset < 350 (radeon_bo_gpu_offset(bo) - domain_start)); 351 } 352 353 return 0; 354 } 355 if (bo->prime_shared_count && domain == RADEON_GEM_DOMAIN_VRAM) { 356 /* A BO shared as a dma-buf cannot be sensibly migrated to VRAM */ 357 return -EINVAL; 358 } 359 360 radeon_ttm_placement_from_domain(bo, domain); 361 for (i = 0; i < bo->placement.num_placement; i++) { 362 /* force to pin into visible video ram */ 363 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) && 364 !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) && 365 (!max_offset || max_offset > bo->rdev->mc.visible_vram_size)) 366 bo->placements[i].lpfn = 367 bo->rdev->mc.visible_vram_size >> PAGE_SHIFT; 368 else 369 bo->placements[i].lpfn = max_offset >> PAGE_SHIFT; 370 371 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; 372 } 373 374 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 375 if (likely(r == 0)) { 376 bo->pin_count = 1; 377 if (gpu_addr != NULL) 378 *gpu_addr = radeon_bo_gpu_offset(bo); 379 if (domain == RADEON_GEM_DOMAIN_VRAM) 380 bo->rdev->vram_pin_size += radeon_bo_size(bo); 381 else 382 bo->rdev->gart_pin_size += radeon_bo_size(bo); 383 } else { 384 dev_err(bo->rdev->dev, "%p pin failed\n", bo); 385 } 386 return r; 387 } 388 389 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr) 390 { 391 return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr); 392 } 393 394 int radeon_bo_unpin(struct radeon_bo *bo) 395 { 396 struct ttm_operation_ctx ctx = { false, false }; 397 int r, i; 398 399 if (!bo->pin_count) { 400 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo); 401 return 0; 402 } 403 bo->pin_count--; 404 if (bo->pin_count) 405 return 0; 406 for (i = 0; i < bo->placement.num_placement; i++) { 407 bo->placements[i].lpfn = 0; 408 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; 409 } 410 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 411 if (likely(r == 0)) { 412 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 413 bo->rdev->vram_pin_size -= radeon_bo_size(bo); 414 else 415 bo->rdev->gart_pin_size -= radeon_bo_size(bo); 416 } else { 417 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo); 418 } 419 return r; 420 } 421 422 int radeon_bo_evict_vram(struct radeon_device *rdev) 423 { 424 /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */ 425 #ifndef CONFIG_HIBERNATION 426 if (rdev->flags & RADEON_IS_IGP) { 427 if (rdev->mc.igp_sideport_enabled == false) 428 /* Useless to evict on IGP chips */ 429 return 0; 430 } 431 #endif 432 return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM); 433 } 434 435 void radeon_bo_force_delete(struct radeon_device *rdev) 436 { 437 struct radeon_bo *bo, *n; 438 439 if (list_empty(&rdev->gem.objects)) { 440 return; 441 } 442 dev_err(rdev->dev, "Userspace still has active objects !\n"); 443 list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) { 444 dev_err(rdev->dev, "%p %p %lu %lu force free\n", 445 &bo->tbo.base, bo, (unsigned long)bo->tbo.base.size, 446 *((unsigned long *)&bo->tbo.base.refcount)); 447 mutex_lock(&bo->rdev->gem.mutex); 448 list_del_init(&bo->list); 449 mutex_unlock(&bo->rdev->gem.mutex); 450 /* this should unref the ttm bo */ 451 drm_gem_object_put_unlocked(&bo->tbo.base); 452 } 453 } 454 455 int radeon_bo_init(struct radeon_device *rdev) 456 { 457 /* reserve PAT memory space to WC for VRAM */ 458 arch_io_reserve_memtype_wc(rdev->mc.aper_base, 459 rdev->mc.aper_size); 460 461 /* Add an MTRR for the VRAM */ 462 if (!rdev->fastfb_working) { 463 rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base, 464 rdev->mc.aper_size); 465 } 466 DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n", 467 rdev->mc.mc_vram_size >> 20, 468 (unsigned long long)rdev->mc.aper_size >> 20); 469 DRM_INFO("RAM width %dbits %cDR\n", 470 rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S'); 471 return radeon_ttm_init(rdev); 472 } 473 474 void radeon_bo_fini(struct radeon_device *rdev) 475 { 476 radeon_ttm_fini(rdev); 477 arch_phys_wc_del(rdev->mc.vram_mtrr); 478 arch_io_free_memtype_wc(rdev->mc.aper_base, rdev->mc.aper_size); 479 } 480 481 /* Returns how many bytes TTM can move per IB. 482 */ 483 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev) 484 { 485 u64 real_vram_size = rdev->mc.real_vram_size; 486 u64 vram_usage = atomic64_read(&rdev->vram_usage); 487 488 /* This function is based on the current VRAM usage. 489 * 490 * - If all of VRAM is free, allow relocating the number of bytes that 491 * is equal to 1/4 of the size of VRAM for this IB. 492 493 * - If more than one half of VRAM is occupied, only allow relocating 494 * 1 MB of data for this IB. 495 * 496 * - From 0 to one half of used VRAM, the threshold decreases 497 * linearly. 498 * __________________ 499 * 1/4 of -|\ | 500 * VRAM | \ | 501 * | \ | 502 * | \ | 503 * | \ | 504 * | \ | 505 * | \ | 506 * | \________|1 MB 507 * |----------------| 508 * VRAM 0 % 100 % 509 * used used 510 * 511 * Note: It's a threshold, not a limit. The threshold must be crossed 512 * for buffer relocations to stop, so any buffer of an arbitrary size 513 * can be moved as long as the threshold isn't crossed before 514 * the relocation takes place. We don't want to disable buffer 515 * relocations completely. 516 * 517 * The idea is that buffers should be placed in VRAM at creation time 518 * and TTM should only do a minimum number of relocations during 519 * command submission. In practice, you need to submit at least 520 * a dozen IBs to move all buffers to VRAM if they are in GTT. 521 * 522 * Also, things can get pretty crazy under memory pressure and actual 523 * VRAM usage can change a lot, so playing safe even at 50% does 524 * consistently increase performance. 525 */ 526 527 u64 half_vram = real_vram_size >> 1; 528 u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage; 529 u64 bytes_moved_threshold = half_free_vram >> 1; 530 return max(bytes_moved_threshold, 1024*1024ull); 531 } 532 533 int radeon_bo_list_validate(struct radeon_device *rdev, 534 struct ww_acquire_ctx *ticket, 535 struct list_head *head, int ring) 536 { 537 struct ttm_operation_ctx ctx = { true, false }; 538 struct radeon_bo_list *lobj; 539 struct list_head duplicates; 540 int r; 541 u64 bytes_moved = 0, initial_bytes_moved; 542 u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev); 543 544 INIT_LIST_HEAD(&duplicates); 545 r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates); 546 if (unlikely(r != 0)) { 547 return r; 548 } 549 550 list_for_each_entry(lobj, head, tv.head) { 551 struct radeon_bo *bo = lobj->robj; 552 if (!bo->pin_count) { 553 u32 domain = lobj->preferred_domains; 554 u32 allowed = lobj->allowed_domains; 555 u32 current_domain = 556 radeon_mem_type_to_domain(bo->tbo.mem.mem_type); 557 558 /* Check if this buffer will be moved and don't move it 559 * if we have moved too many buffers for this IB already. 560 * 561 * Note that this allows moving at least one buffer of 562 * any size, because it doesn't take the current "bo" 563 * into account. We don't want to disallow buffer moves 564 * completely. 565 */ 566 if ((allowed & current_domain) != 0 && 567 (domain & current_domain) == 0 && /* will be moved */ 568 bytes_moved > bytes_moved_threshold) { 569 /* don't move it */ 570 domain = current_domain; 571 } 572 573 retry: 574 radeon_ttm_placement_from_domain(bo, domain); 575 if (ring == R600_RING_TYPE_UVD_INDEX) 576 radeon_uvd_force_into_uvd_segment(bo, allowed); 577 578 initial_bytes_moved = atomic64_read(&rdev->num_bytes_moved); 579 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 580 bytes_moved += atomic64_read(&rdev->num_bytes_moved) - 581 initial_bytes_moved; 582 583 if (unlikely(r)) { 584 if (r != -ERESTARTSYS && 585 domain != lobj->allowed_domains) { 586 domain = lobj->allowed_domains; 587 goto retry; 588 } 589 ttm_eu_backoff_reservation(ticket, head); 590 return r; 591 } 592 } 593 lobj->gpu_offset = radeon_bo_gpu_offset(bo); 594 lobj->tiling_flags = bo->tiling_flags; 595 } 596 597 list_for_each_entry(lobj, &duplicates, tv.head) { 598 lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj); 599 lobj->tiling_flags = lobj->robj->tiling_flags; 600 } 601 602 return 0; 603 } 604 605 int radeon_bo_get_surface_reg(struct radeon_bo *bo) 606 { 607 struct radeon_device *rdev = bo->rdev; 608 struct radeon_surface_reg *reg; 609 struct radeon_bo *old_object; 610 int steal; 611 int i; 612 613 dma_resv_assert_held(bo->tbo.base.resv); 614 615 if (!bo->tiling_flags) 616 return 0; 617 618 if (bo->surface_reg >= 0) { 619 reg = &rdev->surface_regs[bo->surface_reg]; 620 i = bo->surface_reg; 621 goto out; 622 } 623 624 steal = -1; 625 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) { 626 627 reg = &rdev->surface_regs[i]; 628 if (!reg->bo) 629 break; 630 631 old_object = reg->bo; 632 if (old_object->pin_count == 0) 633 steal = i; 634 } 635 636 /* if we are all out */ 637 if (i == RADEON_GEM_MAX_SURFACES) { 638 if (steal == -1) 639 return -ENOMEM; 640 /* find someone with a surface reg and nuke their BO */ 641 reg = &rdev->surface_regs[steal]; 642 old_object = reg->bo; 643 /* blow away the mapping */ 644 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object); 645 ttm_bo_unmap_virtual(&old_object->tbo); 646 old_object->surface_reg = -1; 647 i = steal; 648 } 649 650 bo->surface_reg = i; 651 reg->bo = bo; 652 653 out: 654 radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch, 655 bo->tbo.mem.start << PAGE_SHIFT, 656 bo->tbo.num_pages << PAGE_SHIFT); 657 return 0; 658 } 659 660 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo) 661 { 662 struct radeon_device *rdev = bo->rdev; 663 struct radeon_surface_reg *reg; 664 665 if (bo->surface_reg == -1) 666 return; 667 668 reg = &rdev->surface_regs[bo->surface_reg]; 669 radeon_clear_surface_reg(rdev, bo->surface_reg); 670 671 reg->bo = NULL; 672 bo->surface_reg = -1; 673 } 674 675 int radeon_bo_set_tiling_flags(struct radeon_bo *bo, 676 uint32_t tiling_flags, uint32_t pitch) 677 { 678 struct radeon_device *rdev = bo->rdev; 679 int r; 680 681 if (rdev->family >= CHIP_CEDAR) { 682 unsigned bankw, bankh, mtaspect, tilesplit, stilesplit; 683 684 bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK; 685 bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK; 686 mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK; 687 tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK; 688 stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK; 689 switch (bankw) { 690 case 0: 691 case 1: 692 case 2: 693 case 4: 694 case 8: 695 break; 696 default: 697 return -EINVAL; 698 } 699 switch (bankh) { 700 case 0: 701 case 1: 702 case 2: 703 case 4: 704 case 8: 705 break; 706 default: 707 return -EINVAL; 708 } 709 switch (mtaspect) { 710 case 0: 711 case 1: 712 case 2: 713 case 4: 714 case 8: 715 break; 716 default: 717 return -EINVAL; 718 } 719 if (tilesplit > 6) { 720 return -EINVAL; 721 } 722 if (stilesplit > 6) { 723 return -EINVAL; 724 } 725 } 726 r = radeon_bo_reserve(bo, false); 727 if (unlikely(r != 0)) 728 return r; 729 bo->tiling_flags = tiling_flags; 730 bo->pitch = pitch; 731 radeon_bo_unreserve(bo); 732 return 0; 733 } 734 735 void radeon_bo_get_tiling_flags(struct radeon_bo *bo, 736 uint32_t *tiling_flags, 737 uint32_t *pitch) 738 { 739 dma_resv_assert_held(bo->tbo.base.resv); 740 741 if (tiling_flags) 742 *tiling_flags = bo->tiling_flags; 743 if (pitch) 744 *pitch = bo->pitch; 745 } 746 747 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved, 748 bool force_drop) 749 { 750 if (!force_drop) 751 dma_resv_assert_held(bo->tbo.base.resv); 752 753 if (!(bo->tiling_flags & RADEON_TILING_SURFACE)) 754 return 0; 755 756 if (force_drop) { 757 radeon_bo_clear_surface_reg(bo); 758 return 0; 759 } 760 761 if (bo->tbo.mem.mem_type != TTM_PL_VRAM) { 762 if (!has_moved) 763 return 0; 764 765 if (bo->surface_reg >= 0) 766 radeon_bo_clear_surface_reg(bo); 767 return 0; 768 } 769 770 if ((bo->surface_reg >= 0) && !has_moved) 771 return 0; 772 773 return radeon_bo_get_surface_reg(bo); 774 } 775 776 void radeon_bo_move_notify(struct ttm_buffer_object *bo, 777 bool evict, 778 struct ttm_mem_reg *new_mem) 779 { 780 struct radeon_bo *rbo; 781 782 if (!radeon_ttm_bo_is_radeon_bo(bo)) 783 return; 784 785 rbo = container_of(bo, struct radeon_bo, tbo); 786 radeon_bo_check_tiling(rbo, 0, 1); 787 radeon_vm_bo_invalidate(rbo->rdev, rbo); 788 789 /* update statistics */ 790 if (!new_mem) 791 return; 792 793 radeon_update_memory_usage(rbo, bo->mem.mem_type, -1); 794 radeon_update_memory_usage(rbo, new_mem->mem_type, 1); 795 } 796 797 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo) 798 { 799 struct ttm_operation_ctx ctx = { false, false }; 800 struct radeon_device *rdev; 801 struct radeon_bo *rbo; 802 unsigned long offset, size, lpfn; 803 int i, r; 804 805 if (!radeon_ttm_bo_is_radeon_bo(bo)) 806 return 0; 807 rbo = container_of(bo, struct radeon_bo, tbo); 808 radeon_bo_check_tiling(rbo, 0, 0); 809 rdev = rbo->rdev; 810 if (bo->mem.mem_type != TTM_PL_VRAM) 811 return 0; 812 813 size = bo->mem.num_pages << PAGE_SHIFT; 814 offset = bo->mem.start << PAGE_SHIFT; 815 if ((offset + size) <= rdev->mc.visible_vram_size) 816 return 0; 817 818 /* Can't move a pinned BO to visible VRAM */ 819 if (rbo->pin_count > 0) 820 return -EINVAL; 821 822 /* hurrah the memory is not visible ! */ 823 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM); 824 lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT; 825 for (i = 0; i < rbo->placement.num_placement; i++) { 826 /* Force into visible VRAM */ 827 if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) && 828 (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn)) 829 rbo->placements[i].lpfn = lpfn; 830 } 831 r = ttm_bo_validate(bo, &rbo->placement, &ctx); 832 if (unlikely(r == -ENOMEM)) { 833 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT); 834 return ttm_bo_validate(bo, &rbo->placement, &ctx); 835 } else if (unlikely(r != 0)) { 836 return r; 837 } 838 839 offset = bo->mem.start << PAGE_SHIFT; 840 /* this should never happen */ 841 if ((offset + size) > rdev->mc.visible_vram_size) 842 return -EINVAL; 843 844 return 0; 845 } 846 847 int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait) 848 { 849 int r; 850 851 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); 852 if (unlikely(r != 0)) 853 return r; 854 if (mem_type) 855 *mem_type = bo->tbo.mem.mem_type; 856 857 r = ttm_bo_wait(&bo->tbo, true, no_wait); 858 ttm_bo_unreserve(&bo->tbo); 859 return r; 860 } 861 862 /** 863 * radeon_bo_fence - add fence to buffer object 864 * 865 * @bo: buffer object in question 866 * @fence: fence to add 867 * @shared: true if fence should be added shared 868 * 869 */ 870 void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence, 871 bool shared) 872 { 873 struct dma_resv *resv = bo->tbo.base.resv; 874 875 if (shared) 876 dma_resv_add_shared_fence(resv, &fence->base); 877 else 878 dma_resv_add_excl_fence(resv, &fence->base); 879 } 880