1 /* 2 * Copyright 2007 Dave Airlied 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 "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * 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 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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 /* 25 * Authors: Dave Airlied <airlied@linux.ie> 26 * Ben Skeggs <darktama@iinet.net.au> 27 * Jeremy Kolb <jkolb@brandeis.edu> 28 */ 29 30 #include <linux/dma-mapping.h> 31 32 #include "nouveau_drv.h" 33 #include "nouveau_chan.h" 34 #include "nouveau_fence.h" 35 36 #include "nouveau_bo.h" 37 #include "nouveau_ttm.h" 38 #include "nouveau_gem.h" 39 #include "nouveau_mem.h" 40 #include "nouveau_vmm.h" 41 42 #include <nvif/class.h> 43 #include <nvif/if500b.h> 44 #include <nvif/if900b.h> 45 46 static int nouveau_ttm_tt_bind(struct ttm_bo_device *bdev, struct ttm_tt *ttm, 47 struct ttm_resource *reg); 48 static void nouveau_ttm_tt_unbind(struct ttm_bo_device *bdev, struct ttm_tt *ttm); 49 50 /* 51 * NV10-NV40 tiling helpers 52 */ 53 54 static void 55 nv10_bo_update_tile_region(struct drm_device *dev, struct nouveau_drm_tile *reg, 56 u32 addr, u32 size, u32 pitch, u32 flags) 57 { 58 struct nouveau_drm *drm = nouveau_drm(dev); 59 int i = reg - drm->tile.reg; 60 struct nvkm_fb *fb = nvxx_fb(&drm->client.device); 61 struct nvkm_fb_tile *tile = &fb->tile.region[i]; 62 63 nouveau_fence_unref(®->fence); 64 65 if (tile->pitch) 66 nvkm_fb_tile_fini(fb, i, tile); 67 68 if (pitch) 69 nvkm_fb_tile_init(fb, i, addr, size, pitch, flags, tile); 70 71 nvkm_fb_tile_prog(fb, i, tile); 72 } 73 74 static struct nouveau_drm_tile * 75 nv10_bo_get_tile_region(struct drm_device *dev, int i) 76 { 77 struct nouveau_drm *drm = nouveau_drm(dev); 78 struct nouveau_drm_tile *tile = &drm->tile.reg[i]; 79 80 spin_lock(&drm->tile.lock); 81 82 if (!tile->used && 83 (!tile->fence || nouveau_fence_done(tile->fence))) 84 tile->used = true; 85 else 86 tile = NULL; 87 88 spin_unlock(&drm->tile.lock); 89 return tile; 90 } 91 92 static void 93 nv10_bo_put_tile_region(struct drm_device *dev, struct nouveau_drm_tile *tile, 94 struct dma_fence *fence) 95 { 96 struct nouveau_drm *drm = nouveau_drm(dev); 97 98 if (tile) { 99 spin_lock(&drm->tile.lock); 100 tile->fence = (struct nouveau_fence *)dma_fence_get(fence); 101 tile->used = false; 102 spin_unlock(&drm->tile.lock); 103 } 104 } 105 106 static struct nouveau_drm_tile * 107 nv10_bo_set_tiling(struct drm_device *dev, u32 addr, 108 u32 size, u32 pitch, u32 zeta) 109 { 110 struct nouveau_drm *drm = nouveau_drm(dev); 111 struct nvkm_fb *fb = nvxx_fb(&drm->client.device); 112 struct nouveau_drm_tile *tile, *found = NULL; 113 int i; 114 115 for (i = 0; i < fb->tile.regions; i++) { 116 tile = nv10_bo_get_tile_region(dev, i); 117 118 if (pitch && !found) { 119 found = tile; 120 continue; 121 122 } else if (tile && fb->tile.region[i].pitch) { 123 /* Kill an unused tile region. */ 124 nv10_bo_update_tile_region(dev, tile, 0, 0, 0, 0); 125 } 126 127 nv10_bo_put_tile_region(dev, tile, NULL); 128 } 129 130 if (found) 131 nv10_bo_update_tile_region(dev, found, addr, size, pitch, zeta); 132 return found; 133 } 134 135 static void 136 nouveau_bo_del_ttm(struct ttm_buffer_object *bo) 137 { 138 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 139 struct drm_device *dev = drm->dev; 140 struct nouveau_bo *nvbo = nouveau_bo(bo); 141 142 WARN_ON(nvbo->bo.pin_count > 0); 143 nouveau_bo_del_io_reserve_lru(bo); 144 nv10_bo_put_tile_region(dev, nvbo->tile, NULL); 145 146 /* 147 * If nouveau_bo_new() allocated this buffer, the GEM object was never 148 * initialized, so don't attempt to release it. 149 */ 150 if (bo->base.dev) 151 drm_gem_object_release(&bo->base); 152 153 kfree(nvbo); 154 } 155 156 static inline u64 157 roundup_64(u64 x, u32 y) 158 { 159 x += y - 1; 160 do_div(x, y); 161 return x * y; 162 } 163 164 static void 165 nouveau_bo_fixup_align(struct nouveau_bo *nvbo, int *align, u64 *size) 166 { 167 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 168 struct nvif_device *device = &drm->client.device; 169 170 if (device->info.family < NV_DEVICE_INFO_V0_TESLA) { 171 if (nvbo->mode) { 172 if (device->info.chipset >= 0x40) { 173 *align = 65536; 174 *size = roundup_64(*size, 64 * nvbo->mode); 175 176 } else if (device->info.chipset >= 0x30) { 177 *align = 32768; 178 *size = roundup_64(*size, 64 * nvbo->mode); 179 180 } else if (device->info.chipset >= 0x20) { 181 *align = 16384; 182 *size = roundup_64(*size, 64 * nvbo->mode); 183 184 } else if (device->info.chipset >= 0x10) { 185 *align = 16384; 186 *size = roundup_64(*size, 32 * nvbo->mode); 187 } 188 } 189 } else { 190 *size = roundup_64(*size, (1 << nvbo->page)); 191 *align = max((1 << nvbo->page), *align); 192 } 193 194 *size = roundup_64(*size, PAGE_SIZE); 195 } 196 197 struct nouveau_bo * 198 nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain, 199 u32 tile_mode, u32 tile_flags) 200 { 201 struct nouveau_drm *drm = cli->drm; 202 struct nouveau_bo *nvbo; 203 struct nvif_mmu *mmu = &cli->mmu; 204 struct nvif_vmm *vmm = cli->svm.cli ? &cli->svm.vmm : &cli->vmm.vmm; 205 int i, pi = -1; 206 207 if (!*size) { 208 NV_WARN(drm, "skipped size %016llx\n", *size); 209 return ERR_PTR(-EINVAL); 210 } 211 212 nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL); 213 if (!nvbo) 214 return ERR_PTR(-ENOMEM); 215 INIT_LIST_HEAD(&nvbo->head); 216 INIT_LIST_HEAD(&nvbo->entry); 217 INIT_LIST_HEAD(&nvbo->vma_list); 218 nvbo->bo.bdev = &drm->ttm.bdev; 219 220 /* This is confusing, and doesn't actually mean we want an uncached 221 * mapping, but is what NOUVEAU_GEM_DOMAIN_COHERENT gets translated 222 * into in nouveau_gem_new(). 223 */ 224 if (domain & NOUVEAU_GEM_DOMAIN_COHERENT) { 225 /* Determine if we can get a cache-coherent map, forcing 226 * uncached mapping if we can't. 227 */ 228 if (!nouveau_drm_use_coherent_gpu_mapping(drm)) 229 nvbo->force_coherent = true; 230 } 231 232 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI) { 233 nvbo->kind = (tile_flags & 0x0000ff00) >> 8; 234 if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) { 235 kfree(nvbo); 236 return ERR_PTR(-EINVAL); 237 } 238 239 nvbo->comp = mmu->kind[nvbo->kind] != nvbo->kind; 240 } else 241 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA) { 242 nvbo->kind = (tile_flags & 0x00007f00) >> 8; 243 nvbo->comp = (tile_flags & 0x00030000) >> 16; 244 if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) { 245 kfree(nvbo); 246 return ERR_PTR(-EINVAL); 247 } 248 } else { 249 nvbo->zeta = (tile_flags & 0x00000007); 250 } 251 nvbo->mode = tile_mode; 252 nvbo->contig = !(tile_flags & NOUVEAU_GEM_TILE_NONCONTIG); 253 254 /* Determine the desirable target GPU page size for the buffer. */ 255 for (i = 0; i < vmm->page_nr; i++) { 256 /* Because we cannot currently allow VMM maps to fail 257 * during buffer migration, we need to determine page 258 * size for the buffer up-front, and pre-allocate its 259 * page tables. 260 * 261 * Skip page sizes that can't support needed domains. 262 */ 263 if (cli->device.info.family > NV_DEVICE_INFO_V0_CURIE && 264 (domain & NOUVEAU_GEM_DOMAIN_VRAM) && !vmm->page[i].vram) 265 continue; 266 if ((domain & NOUVEAU_GEM_DOMAIN_GART) && 267 (!vmm->page[i].host || vmm->page[i].shift > PAGE_SHIFT)) 268 continue; 269 270 /* Select this page size if it's the first that supports 271 * the potential memory domains, or when it's compatible 272 * with the requested compression settings. 273 */ 274 if (pi < 0 || !nvbo->comp || vmm->page[i].comp) 275 pi = i; 276 277 /* Stop once the buffer is larger than the current page size. */ 278 if (*size >= 1ULL << vmm->page[i].shift) 279 break; 280 } 281 282 if (WARN_ON(pi < 0)) 283 return ERR_PTR(-EINVAL); 284 285 /* Disable compression if suitable settings couldn't be found. */ 286 if (nvbo->comp && !vmm->page[pi].comp) { 287 if (mmu->object.oclass >= NVIF_CLASS_MMU_GF100) 288 nvbo->kind = mmu->kind[nvbo->kind]; 289 nvbo->comp = 0; 290 } 291 nvbo->page = vmm->page[pi].shift; 292 293 nouveau_bo_fixup_align(nvbo, align, size); 294 295 return nvbo; 296 } 297 298 int 299 nouveau_bo_init(struct nouveau_bo *nvbo, u64 size, int align, u32 domain, 300 struct sg_table *sg, struct dma_resv *robj) 301 { 302 int type = sg ? ttm_bo_type_sg : ttm_bo_type_device; 303 size_t acc_size; 304 int ret; 305 306 acc_size = ttm_bo_dma_acc_size(nvbo->bo.bdev, size, sizeof(*nvbo)); 307 308 nvbo->bo.mem.num_pages = size >> PAGE_SHIFT; 309 nouveau_bo_placement_set(nvbo, domain, 0); 310 INIT_LIST_HEAD(&nvbo->io_reserve_lru); 311 312 ret = ttm_bo_init(nvbo->bo.bdev, &nvbo->bo, size, type, 313 &nvbo->placement, align >> PAGE_SHIFT, false, 314 acc_size, sg, robj, nouveau_bo_del_ttm); 315 if (ret) { 316 /* ttm will call nouveau_bo_del_ttm if it fails.. */ 317 return ret; 318 } 319 320 return 0; 321 } 322 323 int 324 nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, 325 uint32_t domain, uint32_t tile_mode, uint32_t tile_flags, 326 struct sg_table *sg, struct dma_resv *robj, 327 struct nouveau_bo **pnvbo) 328 { 329 struct nouveau_bo *nvbo; 330 int ret; 331 332 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode, 333 tile_flags); 334 if (IS_ERR(nvbo)) 335 return PTR_ERR(nvbo); 336 337 ret = nouveau_bo_init(nvbo, size, align, domain, sg, robj); 338 if (ret) 339 return ret; 340 341 *pnvbo = nvbo; 342 return 0; 343 } 344 345 static void 346 set_placement_list(struct ttm_place *pl, unsigned *n, uint32_t domain) 347 { 348 *n = 0; 349 350 if (domain & NOUVEAU_GEM_DOMAIN_VRAM) { 351 pl[*n].mem_type = TTM_PL_VRAM; 352 pl[*n].flags = 0; 353 (*n)++; 354 } 355 if (domain & NOUVEAU_GEM_DOMAIN_GART) { 356 pl[*n].mem_type = TTM_PL_TT; 357 pl[*n].flags = 0; 358 (*n)++; 359 } 360 if (domain & NOUVEAU_GEM_DOMAIN_CPU) { 361 pl[*n].mem_type = TTM_PL_SYSTEM; 362 pl[(*n)++].flags = 0; 363 } 364 } 365 366 static void 367 set_placement_range(struct nouveau_bo *nvbo, uint32_t domain) 368 { 369 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 370 u32 vram_pages = drm->client.device.info.ram_size >> PAGE_SHIFT; 371 unsigned i, fpfn, lpfn; 372 373 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS && 374 nvbo->mode && (domain & NOUVEAU_GEM_DOMAIN_VRAM) && 375 nvbo->bo.mem.num_pages < vram_pages / 4) { 376 /* 377 * Make sure that the color and depth buffers are handled 378 * by independent memory controller units. Up to a 9x 379 * speed up when alpha-blending and depth-test are enabled 380 * at the same time. 381 */ 382 if (nvbo->zeta) { 383 fpfn = vram_pages / 2; 384 lpfn = ~0; 385 } else { 386 fpfn = 0; 387 lpfn = vram_pages / 2; 388 } 389 for (i = 0; i < nvbo->placement.num_placement; ++i) { 390 nvbo->placements[i].fpfn = fpfn; 391 nvbo->placements[i].lpfn = lpfn; 392 } 393 for (i = 0; i < nvbo->placement.num_busy_placement; ++i) { 394 nvbo->busy_placements[i].fpfn = fpfn; 395 nvbo->busy_placements[i].lpfn = lpfn; 396 } 397 } 398 } 399 400 void 401 nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t domain, 402 uint32_t busy) 403 { 404 struct ttm_placement *pl = &nvbo->placement; 405 406 pl->placement = nvbo->placements; 407 set_placement_list(nvbo->placements, &pl->num_placement, domain); 408 409 pl->busy_placement = nvbo->busy_placements; 410 set_placement_list(nvbo->busy_placements, &pl->num_busy_placement, 411 domain | busy); 412 413 set_placement_range(nvbo, domain); 414 } 415 416 int 417 nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t domain, bool contig) 418 { 419 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 420 struct ttm_buffer_object *bo = &nvbo->bo; 421 bool force = false, evict = false; 422 int ret; 423 424 ret = ttm_bo_reserve(bo, false, false, NULL); 425 if (ret) 426 return ret; 427 428 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA && 429 domain == NOUVEAU_GEM_DOMAIN_VRAM && contig) { 430 if (!nvbo->contig) { 431 nvbo->contig = true; 432 force = true; 433 evict = true; 434 } 435 } 436 437 if (nvbo->bo.pin_count) { 438 bool error = evict; 439 440 switch (bo->mem.mem_type) { 441 case TTM_PL_VRAM: 442 error |= !(domain & NOUVEAU_GEM_DOMAIN_VRAM); 443 break; 444 case TTM_PL_TT: 445 error |= !(domain & NOUVEAU_GEM_DOMAIN_GART); 446 default: 447 break; 448 } 449 450 if (error) { 451 NV_ERROR(drm, "bo %p pinned elsewhere: " 452 "0x%08x vs 0x%08x\n", bo, 453 bo->mem.mem_type, domain); 454 ret = -EBUSY; 455 } 456 ttm_bo_pin(&nvbo->bo); 457 goto out; 458 } 459 460 if (evict) { 461 nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_GART, 0); 462 ret = nouveau_bo_validate(nvbo, false, false); 463 if (ret) 464 goto out; 465 } 466 467 nouveau_bo_placement_set(nvbo, domain, 0); 468 ret = nouveau_bo_validate(nvbo, false, false); 469 if (ret) 470 goto out; 471 472 ttm_bo_pin(&nvbo->bo); 473 474 switch (bo->mem.mem_type) { 475 case TTM_PL_VRAM: 476 drm->gem.vram_available -= bo->mem.size; 477 break; 478 case TTM_PL_TT: 479 drm->gem.gart_available -= bo->mem.size; 480 break; 481 default: 482 break; 483 } 484 485 out: 486 if (force && ret) 487 nvbo->contig = false; 488 ttm_bo_unreserve(bo); 489 return ret; 490 } 491 492 int 493 nouveau_bo_unpin(struct nouveau_bo *nvbo) 494 { 495 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 496 struct ttm_buffer_object *bo = &nvbo->bo; 497 int ret; 498 499 ret = ttm_bo_reserve(bo, false, false, NULL); 500 if (ret) 501 return ret; 502 503 ttm_bo_unpin(&nvbo->bo); 504 if (!nvbo->bo.pin_count) { 505 switch (bo->mem.mem_type) { 506 case TTM_PL_VRAM: 507 drm->gem.vram_available += bo->mem.size; 508 break; 509 case TTM_PL_TT: 510 drm->gem.gart_available += bo->mem.size; 511 break; 512 default: 513 break; 514 } 515 } 516 517 ttm_bo_unreserve(bo); 518 return 0; 519 } 520 521 int 522 nouveau_bo_map(struct nouveau_bo *nvbo) 523 { 524 int ret; 525 526 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL); 527 if (ret) 528 return ret; 529 530 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, &nvbo->kmap); 531 532 ttm_bo_unreserve(&nvbo->bo); 533 return ret; 534 } 535 536 void 537 nouveau_bo_unmap(struct nouveau_bo *nvbo) 538 { 539 if (!nvbo) 540 return; 541 542 ttm_bo_kunmap(&nvbo->kmap); 543 } 544 545 void 546 nouveau_bo_sync_for_device(struct nouveau_bo *nvbo) 547 { 548 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 549 struct ttm_tt *ttm_dma = (struct ttm_tt *)nvbo->bo.ttm; 550 int i; 551 552 if (!ttm_dma) 553 return; 554 555 /* Don't waste time looping if the object is coherent */ 556 if (nvbo->force_coherent) 557 return; 558 559 for (i = 0; i < ttm_dma->num_pages; i++) 560 dma_sync_single_for_device(drm->dev->dev, 561 ttm_dma->dma_address[i], 562 PAGE_SIZE, DMA_TO_DEVICE); 563 } 564 565 void 566 nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo) 567 { 568 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 569 struct ttm_tt *ttm_dma = (struct ttm_tt *)nvbo->bo.ttm; 570 int i; 571 572 if (!ttm_dma) 573 return; 574 575 /* Don't waste time looping if the object is coherent */ 576 if (nvbo->force_coherent) 577 return; 578 579 for (i = 0; i < ttm_dma->num_pages; i++) 580 dma_sync_single_for_cpu(drm->dev->dev, ttm_dma->dma_address[i], 581 PAGE_SIZE, DMA_FROM_DEVICE); 582 } 583 584 void nouveau_bo_add_io_reserve_lru(struct ttm_buffer_object *bo) 585 { 586 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 587 struct nouveau_bo *nvbo = nouveau_bo(bo); 588 589 mutex_lock(&drm->ttm.io_reserve_mutex); 590 list_move_tail(&nvbo->io_reserve_lru, &drm->ttm.io_reserve_lru); 591 mutex_unlock(&drm->ttm.io_reserve_mutex); 592 } 593 594 void nouveau_bo_del_io_reserve_lru(struct ttm_buffer_object *bo) 595 { 596 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 597 struct nouveau_bo *nvbo = nouveau_bo(bo); 598 599 mutex_lock(&drm->ttm.io_reserve_mutex); 600 list_del_init(&nvbo->io_reserve_lru); 601 mutex_unlock(&drm->ttm.io_reserve_mutex); 602 } 603 604 int 605 nouveau_bo_validate(struct nouveau_bo *nvbo, bool interruptible, 606 bool no_wait_gpu) 607 { 608 struct ttm_operation_ctx ctx = { interruptible, no_wait_gpu }; 609 int ret; 610 611 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement, &ctx); 612 if (ret) 613 return ret; 614 615 nouveau_bo_sync_for_device(nvbo); 616 617 return 0; 618 } 619 620 void 621 nouveau_bo_wr16(struct nouveau_bo *nvbo, unsigned index, u16 val) 622 { 623 bool is_iomem; 624 u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem); 625 626 mem += index; 627 628 if (is_iomem) 629 iowrite16_native(val, (void __force __iomem *)mem); 630 else 631 *mem = val; 632 } 633 634 u32 635 nouveau_bo_rd32(struct nouveau_bo *nvbo, unsigned index) 636 { 637 bool is_iomem; 638 u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem); 639 640 mem += index; 641 642 if (is_iomem) 643 return ioread32_native((void __force __iomem *)mem); 644 else 645 return *mem; 646 } 647 648 void 649 nouveau_bo_wr32(struct nouveau_bo *nvbo, unsigned index, u32 val) 650 { 651 bool is_iomem; 652 u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem); 653 654 mem += index; 655 656 if (is_iomem) 657 iowrite32_native(val, (void __force __iomem *)mem); 658 else 659 *mem = val; 660 } 661 662 static struct ttm_tt * 663 nouveau_ttm_tt_create(struct ttm_buffer_object *bo, uint32_t page_flags) 664 { 665 #if IS_ENABLED(CONFIG_AGP) 666 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 667 668 if (drm->agp.bridge) { 669 return ttm_agp_tt_create(bo, drm->agp.bridge, page_flags); 670 } 671 #endif 672 673 return nouveau_sgdma_create_ttm(bo, page_flags); 674 } 675 676 static int 677 nouveau_ttm_tt_bind(struct ttm_bo_device *bdev, struct ttm_tt *ttm, 678 struct ttm_resource *reg) 679 { 680 #if IS_ENABLED(CONFIG_AGP) 681 struct nouveau_drm *drm = nouveau_bdev(bdev); 682 #endif 683 if (!reg) 684 return -EINVAL; 685 #if IS_ENABLED(CONFIG_AGP) 686 if (drm->agp.bridge) 687 return ttm_agp_bind(ttm, reg); 688 #endif 689 return nouveau_sgdma_bind(bdev, ttm, reg); 690 } 691 692 static void 693 nouveau_ttm_tt_unbind(struct ttm_bo_device *bdev, struct ttm_tt *ttm) 694 { 695 #if IS_ENABLED(CONFIG_AGP) 696 struct nouveau_drm *drm = nouveau_bdev(bdev); 697 698 if (drm->agp.bridge) { 699 ttm_agp_unbind(ttm); 700 return; 701 } 702 #endif 703 nouveau_sgdma_unbind(bdev, ttm); 704 } 705 706 static void 707 nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) 708 { 709 struct nouveau_bo *nvbo = nouveau_bo(bo); 710 711 switch (bo->mem.mem_type) { 712 case TTM_PL_VRAM: 713 nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_GART, 714 NOUVEAU_GEM_DOMAIN_CPU); 715 break; 716 default: 717 nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_CPU, 0); 718 break; 719 } 720 721 *pl = nvbo->placement; 722 } 723 724 static int 725 nouveau_bo_move_prep(struct nouveau_drm *drm, struct ttm_buffer_object *bo, 726 struct ttm_resource *reg) 727 { 728 struct nouveau_mem *old_mem = nouveau_mem(&bo->mem); 729 struct nouveau_mem *new_mem = nouveau_mem(reg); 730 struct nvif_vmm *vmm = &drm->client.vmm.vmm; 731 int ret; 732 733 ret = nvif_vmm_get(vmm, LAZY, false, old_mem->mem.page, 0, 734 old_mem->mem.size, &old_mem->vma[0]); 735 if (ret) 736 return ret; 737 738 ret = nvif_vmm_get(vmm, LAZY, false, new_mem->mem.page, 0, 739 new_mem->mem.size, &old_mem->vma[1]); 740 if (ret) 741 goto done; 742 743 ret = nouveau_mem_map(old_mem, vmm, &old_mem->vma[0]); 744 if (ret) 745 goto done; 746 747 ret = nouveau_mem_map(new_mem, vmm, &old_mem->vma[1]); 748 done: 749 if (ret) { 750 nvif_vmm_put(vmm, &old_mem->vma[1]); 751 nvif_vmm_put(vmm, &old_mem->vma[0]); 752 } 753 return 0; 754 } 755 756 static int 757 nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, 758 struct ttm_operation_ctx *ctx, 759 struct ttm_resource *new_reg) 760 { 761 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 762 struct nouveau_channel *chan = drm->ttm.chan; 763 struct nouveau_cli *cli = (void *)chan->user.client; 764 struct nouveau_fence *fence; 765 int ret; 766 767 /* create temporary vmas for the transfer and attach them to the 768 * old nvkm_mem node, these will get cleaned up after ttm has 769 * destroyed the ttm_resource 770 */ 771 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) { 772 ret = nouveau_bo_move_prep(drm, bo, new_reg); 773 if (ret) 774 return ret; 775 } 776 777 mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); 778 ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, ctx->interruptible); 779 if (ret == 0) { 780 ret = drm->ttm.move(chan, bo, &bo->mem, new_reg); 781 if (ret == 0) { 782 ret = nouveau_fence_new(chan, false, &fence); 783 if (ret == 0) { 784 ret = ttm_bo_move_accel_cleanup(bo, 785 &fence->base, 786 evict, false, 787 new_reg); 788 nouveau_fence_unref(&fence); 789 } 790 } 791 } 792 mutex_unlock(&cli->mutex); 793 return ret; 794 } 795 796 void 797 nouveau_bo_move_init(struct nouveau_drm *drm) 798 { 799 static const struct _method_table { 800 const char *name; 801 int engine; 802 s32 oclass; 803 int (*exec)(struct nouveau_channel *, 804 struct ttm_buffer_object *, 805 struct ttm_resource *, struct ttm_resource *); 806 int (*init)(struct nouveau_channel *, u32 handle); 807 } _methods[] = { 808 { "COPY", 4, 0xc5b5, nve0_bo_move_copy, nve0_bo_move_init }, 809 { "GRCE", 0, 0xc5b5, nve0_bo_move_copy, nvc0_bo_move_init }, 810 { "COPY", 4, 0xc3b5, nve0_bo_move_copy, nve0_bo_move_init }, 811 { "GRCE", 0, 0xc3b5, nve0_bo_move_copy, nvc0_bo_move_init }, 812 { "COPY", 4, 0xc1b5, nve0_bo_move_copy, nve0_bo_move_init }, 813 { "GRCE", 0, 0xc1b5, nve0_bo_move_copy, nvc0_bo_move_init }, 814 { "COPY", 4, 0xc0b5, nve0_bo_move_copy, nve0_bo_move_init }, 815 { "GRCE", 0, 0xc0b5, nve0_bo_move_copy, nvc0_bo_move_init }, 816 { "COPY", 4, 0xb0b5, nve0_bo_move_copy, nve0_bo_move_init }, 817 { "GRCE", 0, 0xb0b5, nve0_bo_move_copy, nvc0_bo_move_init }, 818 { "COPY", 4, 0xa0b5, nve0_bo_move_copy, nve0_bo_move_init }, 819 { "GRCE", 0, 0xa0b5, nve0_bo_move_copy, nvc0_bo_move_init }, 820 { "COPY1", 5, 0x90b8, nvc0_bo_move_copy, nvc0_bo_move_init }, 821 { "COPY0", 4, 0x90b5, nvc0_bo_move_copy, nvc0_bo_move_init }, 822 { "COPY", 0, 0x85b5, nva3_bo_move_copy, nv50_bo_move_init }, 823 { "CRYPT", 0, 0x74c1, nv84_bo_move_exec, nv50_bo_move_init }, 824 { "M2MF", 0, 0x9039, nvc0_bo_move_m2mf, nvc0_bo_move_init }, 825 { "M2MF", 0, 0x5039, nv50_bo_move_m2mf, nv50_bo_move_init }, 826 { "M2MF", 0, 0x0039, nv04_bo_move_m2mf, nv04_bo_move_init }, 827 {}, 828 }; 829 const struct _method_table *mthd = _methods; 830 const char *name = "CPU"; 831 int ret; 832 833 do { 834 struct nouveau_channel *chan; 835 836 if (mthd->engine) 837 chan = drm->cechan; 838 else 839 chan = drm->channel; 840 if (chan == NULL) 841 continue; 842 843 ret = nvif_object_ctor(&chan->user, "ttmBoMove", 844 mthd->oclass | (mthd->engine << 16), 845 mthd->oclass, NULL, 0, 846 &drm->ttm.copy); 847 if (ret == 0) { 848 ret = mthd->init(chan, drm->ttm.copy.handle); 849 if (ret) { 850 nvif_object_dtor(&drm->ttm.copy); 851 continue; 852 } 853 854 drm->ttm.move = mthd->exec; 855 drm->ttm.chan = chan; 856 name = mthd->name; 857 break; 858 } 859 } while ((++mthd)->exec); 860 861 NV_INFO(drm, "MM: using %s for buffer copies\n", name); 862 } 863 864 static int 865 nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, 866 struct ttm_operation_ctx *ctx, 867 struct ttm_resource *new_reg) 868 { 869 struct ttm_place placement_memtype = { 870 .fpfn = 0, 871 .lpfn = 0, 872 .mem_type = TTM_PL_TT, 873 .flags = 0 874 }; 875 struct ttm_placement placement; 876 struct ttm_resource tmp_reg; 877 int ret; 878 879 placement.num_placement = placement.num_busy_placement = 1; 880 placement.placement = placement.busy_placement = &placement_memtype; 881 882 tmp_reg = *new_reg; 883 tmp_reg.mm_node = NULL; 884 ret = ttm_bo_mem_space(bo, &placement, &tmp_reg, ctx); 885 if (ret) 886 return ret; 887 888 ret = ttm_tt_populate(bo->bdev, bo->ttm, ctx); 889 if (ret) 890 goto out; 891 892 ret = nouveau_ttm_tt_bind(bo->bdev, bo->ttm, &tmp_reg); 893 if (ret) 894 goto out; 895 896 ret = nouveau_bo_move_m2mf(bo, true, ctx, &tmp_reg); 897 if (ret) 898 goto out; 899 900 ret = ttm_bo_wait_ctx(bo, ctx); 901 if (ret) 902 goto out; 903 904 nouveau_ttm_tt_unbind(bo->bdev, bo->ttm); 905 ttm_resource_free(bo, &bo->mem); 906 ttm_bo_assign_mem(bo, &tmp_reg); 907 out: 908 ttm_resource_free(bo, &tmp_reg); 909 return ret; 910 } 911 912 static int 913 nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, 914 struct ttm_operation_ctx *ctx, 915 struct ttm_resource *new_reg) 916 { 917 struct ttm_place placement_memtype = { 918 .fpfn = 0, 919 .lpfn = 0, 920 .mem_type = TTM_PL_TT, 921 .flags = 0 922 }; 923 struct ttm_placement placement; 924 struct ttm_resource tmp_reg; 925 int ret; 926 927 placement.num_placement = placement.num_busy_placement = 1; 928 placement.placement = placement.busy_placement = &placement_memtype; 929 930 tmp_reg = *new_reg; 931 tmp_reg.mm_node = NULL; 932 ret = ttm_bo_mem_space(bo, &placement, &tmp_reg, ctx); 933 if (ret) 934 return ret; 935 936 ret = ttm_tt_populate(bo->bdev, bo->ttm, ctx); 937 if (unlikely(ret != 0)) 938 return ret; 939 940 ret = nouveau_ttm_tt_bind(bo->bdev, bo->ttm, &tmp_reg); 941 if (unlikely(ret != 0)) 942 return ret; 943 944 ttm_bo_assign_mem(bo, &tmp_reg); 945 ret = nouveau_bo_move_m2mf(bo, true, ctx, new_reg); 946 if (ret) 947 goto out; 948 949 out: 950 ttm_resource_free(bo, &tmp_reg); 951 return ret; 952 } 953 954 static void 955 nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, bool evict, 956 struct ttm_resource *new_reg) 957 { 958 struct nouveau_mem *mem = new_reg ? nouveau_mem(new_reg) : NULL; 959 struct nouveau_bo *nvbo = nouveau_bo(bo); 960 struct nouveau_vma *vma; 961 962 /* ttm can now (stupidly) pass the driver bos it didn't create... */ 963 if (bo->destroy != nouveau_bo_del_ttm) 964 return; 965 966 nouveau_bo_del_io_reserve_lru(bo); 967 968 if (mem && new_reg->mem_type != TTM_PL_SYSTEM && 969 mem->mem.page == nvbo->page) { 970 list_for_each_entry(vma, &nvbo->vma_list, head) { 971 nouveau_vma_map(vma, mem); 972 } 973 } else { 974 list_for_each_entry(vma, &nvbo->vma_list, head) { 975 WARN_ON(ttm_bo_wait(bo, false, false)); 976 nouveau_vma_unmap(vma); 977 } 978 } 979 980 if (new_reg) { 981 if (new_reg->mm_node) 982 nvbo->offset = (new_reg->start << PAGE_SHIFT); 983 else 984 nvbo->offset = 0; 985 } 986 987 } 988 989 static int 990 nouveau_bo_vm_bind(struct ttm_buffer_object *bo, struct ttm_resource *new_reg, 991 struct nouveau_drm_tile **new_tile) 992 { 993 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 994 struct drm_device *dev = drm->dev; 995 struct nouveau_bo *nvbo = nouveau_bo(bo); 996 u64 offset = new_reg->start << PAGE_SHIFT; 997 998 *new_tile = NULL; 999 if (new_reg->mem_type != TTM_PL_VRAM) 1000 return 0; 1001 1002 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_CELSIUS) { 1003 *new_tile = nv10_bo_set_tiling(dev, offset, new_reg->size, 1004 nvbo->mode, nvbo->zeta); 1005 } 1006 1007 return 0; 1008 } 1009 1010 static void 1011 nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo, 1012 struct nouveau_drm_tile *new_tile, 1013 struct nouveau_drm_tile **old_tile) 1014 { 1015 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 1016 struct drm_device *dev = drm->dev; 1017 struct dma_fence *fence = dma_resv_get_excl(bo->base.resv); 1018 1019 nv10_bo_put_tile_region(dev, *old_tile, fence); 1020 *old_tile = new_tile; 1021 } 1022 1023 static int 1024 nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, 1025 struct ttm_operation_ctx *ctx, 1026 struct ttm_resource *new_reg) 1027 { 1028 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 1029 struct nouveau_bo *nvbo = nouveau_bo(bo); 1030 struct ttm_resource *old_reg = &bo->mem; 1031 struct nouveau_drm_tile *new_tile = NULL; 1032 int ret = 0; 1033 1034 if (new_reg->mem_type == TTM_PL_TT) { 1035 ret = nouveau_ttm_tt_bind(bo->bdev, bo->ttm, new_reg); 1036 if (ret) 1037 return ret; 1038 } 1039 1040 nouveau_bo_move_ntfy(bo, evict, new_reg); 1041 ret = ttm_bo_wait_ctx(bo, ctx); 1042 if (ret) 1043 goto out_ntfy; 1044 1045 if (nvbo->bo.pin_count) 1046 NV_WARN(drm, "Moving pinned object %p!\n", nvbo); 1047 1048 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { 1049 ret = nouveau_bo_vm_bind(bo, new_reg, &new_tile); 1050 if (ret) 1051 goto out_ntfy; 1052 } 1053 1054 /* Fake bo copy. */ 1055 if (old_reg->mem_type == TTM_PL_SYSTEM && !bo->ttm) { 1056 ttm_bo_move_null(bo, new_reg); 1057 goto out; 1058 } 1059 1060 if (old_reg->mem_type == TTM_PL_SYSTEM && 1061 new_reg->mem_type == TTM_PL_TT) { 1062 ttm_bo_move_null(bo, new_reg); 1063 goto out; 1064 } 1065 1066 if (old_reg->mem_type == TTM_PL_TT && 1067 new_reg->mem_type == TTM_PL_SYSTEM) { 1068 nouveau_ttm_tt_unbind(bo->bdev, bo->ttm); 1069 ttm_resource_free(bo, &bo->mem); 1070 ttm_bo_assign_mem(bo, new_reg); 1071 goto out; 1072 } 1073 1074 /* Hardware assisted copy. */ 1075 if (drm->ttm.move) { 1076 if (new_reg->mem_type == TTM_PL_SYSTEM) 1077 ret = nouveau_bo_move_flipd(bo, evict, ctx, 1078 new_reg); 1079 else if (old_reg->mem_type == TTM_PL_SYSTEM) 1080 ret = nouveau_bo_move_flips(bo, evict, ctx, 1081 new_reg); 1082 else 1083 ret = nouveau_bo_move_m2mf(bo, evict, ctx, 1084 new_reg); 1085 if (!ret) 1086 goto out; 1087 } 1088 1089 /* Fallback to software copy. */ 1090 ret = ttm_bo_move_memcpy(bo, ctx, new_reg); 1091 1092 out: 1093 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { 1094 if (ret) 1095 nouveau_bo_vm_cleanup(bo, NULL, &new_tile); 1096 else 1097 nouveau_bo_vm_cleanup(bo, new_tile, &nvbo->tile); 1098 } 1099 out_ntfy: 1100 if (ret) { 1101 swap(*new_reg, bo->mem); 1102 nouveau_bo_move_ntfy(bo, false, new_reg); 1103 swap(*new_reg, bo->mem); 1104 } 1105 return ret; 1106 } 1107 1108 static int 1109 nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) 1110 { 1111 struct nouveau_bo *nvbo = nouveau_bo(bo); 1112 1113 return drm_vma_node_verify_access(&nvbo->bo.base.vma_node, 1114 filp->private_data); 1115 } 1116 1117 static void 1118 nouveau_ttm_io_mem_free_locked(struct nouveau_drm *drm, 1119 struct ttm_resource *reg) 1120 { 1121 struct nouveau_mem *mem = nouveau_mem(reg); 1122 1123 if (drm->client.mem->oclass >= NVIF_CLASS_MEM_NV50) { 1124 switch (reg->mem_type) { 1125 case TTM_PL_TT: 1126 if (mem->kind) 1127 nvif_object_unmap_handle(&mem->mem.object); 1128 break; 1129 case TTM_PL_VRAM: 1130 nvif_object_unmap_handle(&mem->mem.object); 1131 break; 1132 default: 1133 break; 1134 } 1135 } 1136 } 1137 1138 static int 1139 nouveau_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_resource *reg) 1140 { 1141 struct nouveau_drm *drm = nouveau_bdev(bdev); 1142 struct nvkm_device *device = nvxx_device(&drm->client.device); 1143 struct nouveau_mem *mem = nouveau_mem(reg); 1144 struct nvif_mmu *mmu = &drm->client.mmu; 1145 const u8 type = mmu->type[drm->ttm.type_vram].type; 1146 int ret; 1147 1148 mutex_lock(&drm->ttm.io_reserve_mutex); 1149 retry: 1150 switch (reg->mem_type) { 1151 case TTM_PL_SYSTEM: 1152 /* System memory */ 1153 ret = 0; 1154 goto out; 1155 case TTM_PL_TT: 1156 #if IS_ENABLED(CONFIG_AGP) 1157 if (drm->agp.bridge) { 1158 reg->bus.offset = (reg->start << PAGE_SHIFT) + 1159 drm->agp.base; 1160 reg->bus.is_iomem = !drm->agp.cma; 1161 reg->bus.caching = ttm_write_combined; 1162 } 1163 #endif 1164 if (drm->client.mem->oclass < NVIF_CLASS_MEM_NV50 || 1165 !mem->kind) { 1166 /* untiled */ 1167 ret = 0; 1168 break; 1169 } 1170 fallthrough; /* tiled memory */ 1171 case TTM_PL_VRAM: 1172 reg->bus.offset = (reg->start << PAGE_SHIFT) + 1173 device->func->resource_addr(device, 1); 1174 reg->bus.is_iomem = true; 1175 1176 /* Some BARs do not support being ioremapped WC */ 1177 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA && 1178 type & NVIF_MEM_UNCACHED) 1179 reg->bus.caching = ttm_uncached; 1180 else 1181 reg->bus.caching = ttm_write_combined; 1182 1183 if (drm->client.mem->oclass >= NVIF_CLASS_MEM_NV50) { 1184 union { 1185 struct nv50_mem_map_v0 nv50; 1186 struct gf100_mem_map_v0 gf100; 1187 } args; 1188 u64 handle, length; 1189 u32 argc = 0; 1190 1191 switch (mem->mem.object.oclass) { 1192 case NVIF_CLASS_MEM_NV50: 1193 args.nv50.version = 0; 1194 args.nv50.ro = 0; 1195 args.nv50.kind = mem->kind; 1196 args.nv50.comp = mem->comp; 1197 argc = sizeof(args.nv50); 1198 break; 1199 case NVIF_CLASS_MEM_GF100: 1200 args.gf100.version = 0; 1201 args.gf100.ro = 0; 1202 args.gf100.kind = mem->kind; 1203 argc = sizeof(args.gf100); 1204 break; 1205 default: 1206 WARN_ON(1); 1207 break; 1208 } 1209 1210 ret = nvif_object_map_handle(&mem->mem.object, 1211 &args, argc, 1212 &handle, &length); 1213 if (ret != 1) { 1214 if (WARN_ON(ret == 0)) 1215 ret = -EINVAL; 1216 goto out; 1217 } 1218 1219 reg->bus.offset = handle; 1220 ret = 0; 1221 } 1222 break; 1223 default: 1224 ret = -EINVAL; 1225 } 1226 1227 out: 1228 if (ret == -ENOSPC) { 1229 struct nouveau_bo *nvbo; 1230 1231 nvbo = list_first_entry_or_null(&drm->ttm.io_reserve_lru, 1232 typeof(*nvbo), 1233 io_reserve_lru); 1234 if (nvbo) { 1235 list_del_init(&nvbo->io_reserve_lru); 1236 drm_vma_node_unmap(&nvbo->bo.base.vma_node, 1237 bdev->dev_mapping); 1238 nouveau_ttm_io_mem_free_locked(drm, &nvbo->bo.mem); 1239 goto retry; 1240 } 1241 1242 } 1243 mutex_unlock(&drm->ttm.io_reserve_mutex); 1244 return ret; 1245 } 1246 1247 static void 1248 nouveau_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_resource *reg) 1249 { 1250 struct nouveau_drm *drm = nouveau_bdev(bdev); 1251 1252 mutex_lock(&drm->ttm.io_reserve_mutex); 1253 nouveau_ttm_io_mem_free_locked(drm, reg); 1254 mutex_unlock(&drm->ttm.io_reserve_mutex); 1255 } 1256 1257 vm_fault_t nouveau_ttm_fault_reserve_notify(struct ttm_buffer_object *bo) 1258 { 1259 struct nouveau_drm *drm = nouveau_bdev(bo->bdev); 1260 struct nouveau_bo *nvbo = nouveau_bo(bo); 1261 struct nvkm_device *device = nvxx_device(&drm->client.device); 1262 u32 mappable = device->func->resource_size(device, 1) >> PAGE_SHIFT; 1263 int i, ret; 1264 1265 /* as long as the bo isn't in vram, and isn't tiled, we've got 1266 * nothing to do here. 1267 */ 1268 if (bo->mem.mem_type != TTM_PL_VRAM) { 1269 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA || 1270 !nvbo->kind) 1271 return 0; 1272 1273 if (bo->mem.mem_type != TTM_PL_SYSTEM) 1274 return 0; 1275 1276 nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_GART, 0); 1277 1278 } else { 1279 /* make sure bo is in mappable vram */ 1280 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA || 1281 bo->mem.start + bo->mem.num_pages < mappable) 1282 return 0; 1283 1284 for (i = 0; i < nvbo->placement.num_placement; ++i) { 1285 nvbo->placements[i].fpfn = 0; 1286 nvbo->placements[i].lpfn = mappable; 1287 } 1288 1289 for (i = 0; i < nvbo->placement.num_busy_placement; ++i) { 1290 nvbo->busy_placements[i].fpfn = 0; 1291 nvbo->busy_placements[i].lpfn = mappable; 1292 } 1293 1294 nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, 0); 1295 } 1296 1297 ret = nouveau_bo_validate(nvbo, false, false); 1298 if (unlikely(ret == -EBUSY || ret == -ERESTARTSYS)) 1299 return VM_FAULT_NOPAGE; 1300 else if (unlikely(ret)) 1301 return VM_FAULT_SIGBUS; 1302 1303 ttm_bo_move_to_lru_tail_unlocked(bo); 1304 return 0; 1305 } 1306 1307 static int 1308 nouveau_ttm_tt_populate(struct ttm_bo_device *bdev, 1309 struct ttm_tt *ttm, struct ttm_operation_ctx *ctx) 1310 { 1311 struct ttm_tt *ttm_dma = (void *)ttm; 1312 struct nouveau_drm *drm; 1313 struct device *dev; 1314 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); 1315 1316 if (ttm_tt_is_populated(ttm)) 1317 return 0; 1318 1319 if (slave && ttm->sg) { 1320 /* make userspace faulting work */ 1321 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, 1322 ttm_dma->dma_address, ttm->num_pages); 1323 return 0; 1324 } 1325 1326 drm = nouveau_bdev(bdev); 1327 dev = drm->dev->dev; 1328 1329 return ttm_pool_alloc(&drm->ttm.bdev.pool, ttm, ctx); 1330 } 1331 1332 static void 1333 nouveau_ttm_tt_unpopulate(struct ttm_bo_device *bdev, 1334 struct ttm_tt *ttm) 1335 { 1336 struct nouveau_drm *drm; 1337 struct device *dev; 1338 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); 1339 1340 if (slave) 1341 return; 1342 1343 drm = nouveau_bdev(bdev); 1344 dev = drm->dev->dev; 1345 1346 return ttm_pool_free(&drm->ttm.bdev.pool, ttm); 1347 } 1348 1349 static void 1350 nouveau_ttm_tt_destroy(struct ttm_bo_device *bdev, 1351 struct ttm_tt *ttm) 1352 { 1353 #if IS_ENABLED(CONFIG_AGP) 1354 struct nouveau_drm *drm = nouveau_bdev(bdev); 1355 if (drm->agp.bridge) { 1356 ttm_agp_unbind(ttm); 1357 ttm_tt_destroy_common(bdev, ttm); 1358 ttm_agp_destroy(ttm); 1359 return; 1360 } 1361 #endif 1362 nouveau_sgdma_destroy(bdev, ttm); 1363 } 1364 1365 void 1366 nouveau_bo_fence(struct nouveau_bo *nvbo, struct nouveau_fence *fence, bool exclusive) 1367 { 1368 struct dma_resv *resv = nvbo->bo.base.resv; 1369 1370 if (exclusive) 1371 dma_resv_add_excl_fence(resv, &fence->base); 1372 else if (fence) 1373 dma_resv_add_shared_fence(resv, &fence->base); 1374 } 1375 1376 static void 1377 nouveau_bo_delete_mem_notify(struct ttm_buffer_object *bo) 1378 { 1379 nouveau_bo_move_ntfy(bo, false, NULL); 1380 } 1381 1382 struct ttm_bo_driver nouveau_bo_driver = { 1383 .ttm_tt_create = &nouveau_ttm_tt_create, 1384 .ttm_tt_populate = &nouveau_ttm_tt_populate, 1385 .ttm_tt_unpopulate = &nouveau_ttm_tt_unpopulate, 1386 .ttm_tt_destroy = &nouveau_ttm_tt_destroy, 1387 .eviction_valuable = ttm_bo_eviction_valuable, 1388 .evict_flags = nouveau_bo_evict_flags, 1389 .delete_mem_notify = nouveau_bo_delete_mem_notify, 1390 .move = nouveau_bo_move, 1391 .verify_access = nouveau_bo_verify_access, 1392 .io_mem_reserve = &nouveau_ttm_io_mem_reserve, 1393 .io_mem_free = &nouveau_ttm_io_mem_free, 1394 }; 1395