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 <ttm/ttm_bo_api.h> 33 #include <ttm/ttm_bo_driver.h> 34 #include <ttm/ttm_placement.h> 35 #include <ttm/ttm_module.h> 36 #include <drm/drmP.h> 37 #include <drm/radeon_drm.h> 38 #include <linux/seq_file.h> 39 #include "radeon_reg.h" 40 #include "radeon.h" 41 42 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) 43 44 static int radeon_ttm_debugfs_init(struct radeon_device *rdev); 45 46 static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev) 47 { 48 struct radeon_mman *mman; 49 struct radeon_device *rdev; 50 51 mman = container_of(bdev, struct radeon_mman, bdev); 52 rdev = container_of(mman, struct radeon_device, mman); 53 return rdev; 54 } 55 56 57 /* 58 * Global memory. 59 */ 60 static int radeon_ttm_mem_global_init(struct ttm_global_reference *ref) 61 { 62 return ttm_mem_global_init(ref->object); 63 } 64 65 static void radeon_ttm_mem_global_release(struct ttm_global_reference *ref) 66 { 67 ttm_mem_global_release(ref->object); 68 } 69 70 static int radeon_ttm_global_init(struct radeon_device *rdev) 71 { 72 struct ttm_global_reference *global_ref; 73 int r; 74 75 rdev->mman.mem_global_referenced = false; 76 global_ref = &rdev->mman.mem_global_ref; 77 global_ref->global_type = TTM_GLOBAL_TTM_MEM; 78 global_ref->size = sizeof(struct ttm_mem_global); 79 global_ref->init = &radeon_ttm_mem_global_init; 80 global_ref->release = &radeon_ttm_mem_global_release; 81 r = ttm_global_item_ref(global_ref); 82 if (r != 0) { 83 DRM_ERROR("Failed setting up TTM memory accounting " 84 "subsystem.\n"); 85 return r; 86 } 87 88 rdev->mman.bo_global_ref.mem_glob = 89 rdev->mman.mem_global_ref.object; 90 global_ref = &rdev->mman.bo_global_ref.ref; 91 global_ref->global_type = TTM_GLOBAL_TTM_BO; 92 global_ref->size = sizeof(struct ttm_bo_global); 93 global_ref->init = &ttm_bo_global_init; 94 global_ref->release = &ttm_bo_global_release; 95 r = ttm_global_item_ref(global_ref); 96 if (r != 0) { 97 DRM_ERROR("Failed setting up TTM BO subsystem.\n"); 98 ttm_global_item_unref(&rdev->mman.mem_global_ref); 99 return r; 100 } 101 102 rdev->mman.mem_global_referenced = true; 103 return 0; 104 } 105 106 static void radeon_ttm_global_fini(struct radeon_device *rdev) 107 { 108 if (rdev->mman.mem_global_referenced) { 109 ttm_global_item_unref(&rdev->mman.bo_global_ref.ref); 110 ttm_global_item_unref(&rdev->mman.mem_global_ref); 111 rdev->mman.mem_global_referenced = false; 112 } 113 } 114 115 struct ttm_backend *radeon_ttm_backend_create(struct radeon_device *rdev); 116 117 static struct ttm_backend* 118 radeon_create_ttm_backend_entry(struct ttm_bo_device *bdev) 119 { 120 struct radeon_device *rdev; 121 122 rdev = radeon_get_rdev(bdev); 123 #if __OS_HAS_AGP 124 if (rdev->flags & RADEON_IS_AGP) { 125 return ttm_agp_backend_init(bdev, rdev->ddev->agp->bridge); 126 } else 127 #endif 128 { 129 return radeon_ttm_backend_create(rdev); 130 } 131 } 132 133 static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) 134 { 135 return 0; 136 } 137 138 static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, 139 struct ttm_mem_type_manager *man) 140 { 141 struct radeon_device *rdev; 142 143 rdev = radeon_get_rdev(bdev); 144 145 switch (type) { 146 case TTM_PL_SYSTEM: 147 /* System memory */ 148 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; 149 man->available_caching = TTM_PL_MASK_CACHING; 150 man->default_caching = TTM_PL_FLAG_CACHED; 151 break; 152 case TTM_PL_TT: 153 man->gpu_offset = rdev->mc.gtt_location; 154 man->available_caching = TTM_PL_MASK_CACHING; 155 man->default_caching = TTM_PL_FLAG_CACHED; 156 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA; 157 #if __OS_HAS_AGP 158 if (rdev->flags & RADEON_IS_AGP) { 159 if (!(drm_core_has_AGP(rdev->ddev) && rdev->ddev->agp)) { 160 DRM_ERROR("AGP is not enabled for memory type %u\n", 161 (unsigned)type); 162 return -EINVAL; 163 } 164 man->io_offset = rdev->mc.agp_base; 165 man->io_size = rdev->mc.gtt_size; 166 man->io_addr = NULL; 167 if (!rdev->ddev->agp->cant_use_aperture) 168 man->flags = TTM_MEMTYPE_FLAG_NEEDS_IOREMAP | 169 TTM_MEMTYPE_FLAG_MAPPABLE; 170 man->available_caching = TTM_PL_FLAG_UNCACHED | 171 TTM_PL_FLAG_WC; 172 man->default_caching = TTM_PL_FLAG_WC; 173 } else 174 #endif 175 { 176 man->io_offset = 0; 177 man->io_size = 0; 178 man->io_addr = NULL; 179 } 180 break; 181 case TTM_PL_VRAM: 182 /* "On-card" video ram */ 183 man->gpu_offset = rdev->mc.vram_location; 184 man->flags = TTM_MEMTYPE_FLAG_FIXED | 185 TTM_MEMTYPE_FLAG_NEEDS_IOREMAP | 186 TTM_MEMTYPE_FLAG_MAPPABLE; 187 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC; 188 man->default_caching = TTM_PL_FLAG_WC; 189 man->io_addr = NULL; 190 man->io_offset = rdev->mc.aper_base; 191 man->io_size = rdev->mc.aper_size; 192 break; 193 default: 194 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); 195 return -EINVAL; 196 } 197 return 0; 198 } 199 200 static uint32_t radeon_evict_flags(struct ttm_buffer_object *bo) 201 { 202 uint32_t cur_placement = bo->mem.placement & ~TTM_PL_MASK_MEMTYPE; 203 204 switch (bo->mem.mem_type) { 205 default: 206 return (cur_placement & ~TTM_PL_MASK_CACHING) | 207 TTM_PL_FLAG_SYSTEM | 208 TTM_PL_FLAG_CACHED; 209 } 210 } 211 212 static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp) 213 { 214 return 0; 215 } 216 217 static void radeon_move_null(struct ttm_buffer_object *bo, 218 struct ttm_mem_reg *new_mem) 219 { 220 struct ttm_mem_reg *old_mem = &bo->mem; 221 222 BUG_ON(old_mem->mm_node != NULL); 223 *old_mem = *new_mem; 224 new_mem->mm_node = NULL; 225 } 226 227 static int radeon_move_blit(struct ttm_buffer_object *bo, 228 bool evict, int no_wait, 229 struct ttm_mem_reg *new_mem, 230 struct ttm_mem_reg *old_mem) 231 { 232 struct radeon_device *rdev; 233 uint64_t old_start, new_start; 234 struct radeon_fence *fence; 235 int r; 236 237 rdev = radeon_get_rdev(bo->bdev); 238 r = radeon_fence_create(rdev, &fence); 239 if (unlikely(r)) { 240 return r; 241 } 242 old_start = old_mem->mm_node->start << PAGE_SHIFT; 243 new_start = new_mem->mm_node->start << PAGE_SHIFT; 244 245 switch (old_mem->mem_type) { 246 case TTM_PL_VRAM: 247 old_start += rdev->mc.vram_location; 248 break; 249 case TTM_PL_TT: 250 old_start += rdev->mc.gtt_location; 251 break; 252 default: 253 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); 254 return -EINVAL; 255 } 256 switch (new_mem->mem_type) { 257 case TTM_PL_VRAM: 258 new_start += rdev->mc.vram_location; 259 break; 260 case TTM_PL_TT: 261 new_start += rdev->mc.gtt_location; 262 break; 263 default: 264 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); 265 return -EINVAL; 266 } 267 if (!rdev->cp.ready) { 268 DRM_ERROR("Trying to move memory with CP turned off.\n"); 269 return -EINVAL; 270 } 271 r = radeon_copy(rdev, old_start, new_start, new_mem->num_pages, fence); 272 /* FIXME: handle copy error */ 273 r = ttm_bo_move_accel_cleanup(bo, (void *)fence, NULL, 274 evict, no_wait, new_mem); 275 radeon_fence_unref(&fence); 276 return r; 277 } 278 279 static int radeon_move_vram_ram(struct ttm_buffer_object *bo, 280 bool evict, bool interruptible, bool no_wait, 281 struct ttm_mem_reg *new_mem) 282 { 283 struct radeon_device *rdev; 284 struct ttm_mem_reg *old_mem = &bo->mem; 285 struct ttm_mem_reg tmp_mem; 286 uint32_t proposed_placement; 287 int r; 288 289 rdev = radeon_get_rdev(bo->bdev); 290 tmp_mem = *new_mem; 291 tmp_mem.mm_node = NULL; 292 proposed_placement = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING; 293 r = ttm_bo_mem_space(bo, proposed_placement, &tmp_mem, 294 interruptible, no_wait); 295 if (unlikely(r)) { 296 return r; 297 } 298 299 r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement); 300 if (unlikely(r)) { 301 goto out_cleanup; 302 } 303 304 r = ttm_tt_bind(bo->ttm, &tmp_mem); 305 if (unlikely(r)) { 306 goto out_cleanup; 307 } 308 r = radeon_move_blit(bo, true, no_wait, &tmp_mem, old_mem); 309 if (unlikely(r)) { 310 goto out_cleanup; 311 } 312 r = ttm_bo_move_ttm(bo, true, no_wait, new_mem); 313 out_cleanup: 314 if (tmp_mem.mm_node) { 315 struct ttm_bo_global *glob = rdev->mman.bdev.glob; 316 317 spin_lock(&glob->lru_lock); 318 drm_mm_put_block(tmp_mem.mm_node); 319 spin_unlock(&glob->lru_lock); 320 return r; 321 } 322 return r; 323 } 324 325 static int radeon_move_ram_vram(struct ttm_buffer_object *bo, 326 bool evict, bool interruptible, bool no_wait, 327 struct ttm_mem_reg *new_mem) 328 { 329 struct radeon_device *rdev; 330 struct ttm_mem_reg *old_mem = &bo->mem; 331 struct ttm_mem_reg tmp_mem; 332 uint32_t proposed_flags; 333 int r; 334 335 rdev = radeon_get_rdev(bo->bdev); 336 tmp_mem = *new_mem; 337 tmp_mem.mm_node = NULL; 338 proposed_flags = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING; 339 r = ttm_bo_mem_space(bo, proposed_flags, &tmp_mem, 340 interruptible, no_wait); 341 if (unlikely(r)) { 342 return r; 343 } 344 r = ttm_bo_move_ttm(bo, true, no_wait, &tmp_mem); 345 if (unlikely(r)) { 346 goto out_cleanup; 347 } 348 r = radeon_move_blit(bo, true, no_wait, new_mem, old_mem); 349 if (unlikely(r)) { 350 goto out_cleanup; 351 } 352 out_cleanup: 353 if (tmp_mem.mm_node) { 354 struct ttm_bo_global *glob = rdev->mman.bdev.glob; 355 356 spin_lock(&glob->lru_lock); 357 drm_mm_put_block(tmp_mem.mm_node); 358 spin_unlock(&glob->lru_lock); 359 return r; 360 } 361 return r; 362 } 363 364 static int radeon_bo_move(struct ttm_buffer_object *bo, 365 bool evict, bool interruptible, bool no_wait, 366 struct ttm_mem_reg *new_mem) 367 { 368 struct radeon_device *rdev; 369 struct ttm_mem_reg *old_mem = &bo->mem; 370 int r; 371 372 rdev = radeon_get_rdev(bo->bdev); 373 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 374 radeon_move_null(bo, new_mem); 375 return 0; 376 } 377 if ((old_mem->mem_type == TTM_PL_TT && 378 new_mem->mem_type == TTM_PL_SYSTEM) || 379 (old_mem->mem_type == TTM_PL_SYSTEM && 380 new_mem->mem_type == TTM_PL_TT)) { 381 /* bind is enought */ 382 radeon_move_null(bo, new_mem); 383 return 0; 384 } 385 if (!rdev->cp.ready || rdev->asic->copy == NULL) { 386 /* use memcpy */ 387 goto memcpy; 388 } 389 390 if (old_mem->mem_type == TTM_PL_VRAM && 391 new_mem->mem_type == TTM_PL_SYSTEM) { 392 r = radeon_move_vram_ram(bo, evict, interruptible, 393 no_wait, new_mem); 394 } else if (old_mem->mem_type == TTM_PL_SYSTEM && 395 new_mem->mem_type == TTM_PL_VRAM) { 396 r = radeon_move_ram_vram(bo, evict, interruptible, 397 no_wait, new_mem); 398 } else { 399 r = radeon_move_blit(bo, evict, no_wait, new_mem, old_mem); 400 } 401 402 if (r) { 403 memcpy: 404 r = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem); 405 } 406 407 return r; 408 } 409 410 const uint32_t radeon_mem_prios[] = { 411 TTM_PL_VRAM, 412 TTM_PL_TT, 413 TTM_PL_SYSTEM, 414 }; 415 416 const uint32_t radeon_busy_prios[] = { 417 TTM_PL_TT, 418 TTM_PL_VRAM, 419 TTM_PL_SYSTEM, 420 }; 421 422 static int radeon_sync_obj_wait(void *sync_obj, void *sync_arg, 423 bool lazy, bool interruptible) 424 { 425 return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible); 426 } 427 428 static int radeon_sync_obj_flush(void *sync_obj, void *sync_arg) 429 { 430 return 0; 431 } 432 433 static void radeon_sync_obj_unref(void **sync_obj) 434 { 435 radeon_fence_unref((struct radeon_fence **)sync_obj); 436 } 437 438 static void *radeon_sync_obj_ref(void *sync_obj) 439 { 440 return radeon_fence_ref((struct radeon_fence *)sync_obj); 441 } 442 443 static bool radeon_sync_obj_signaled(void *sync_obj, void *sync_arg) 444 { 445 return radeon_fence_signaled((struct radeon_fence *)sync_obj); 446 } 447 448 static struct ttm_bo_driver radeon_bo_driver = { 449 .mem_type_prio = radeon_mem_prios, 450 .mem_busy_prio = radeon_busy_prios, 451 .num_mem_type_prio = ARRAY_SIZE(radeon_mem_prios), 452 .num_mem_busy_prio = ARRAY_SIZE(radeon_busy_prios), 453 .create_ttm_backend_entry = &radeon_create_ttm_backend_entry, 454 .invalidate_caches = &radeon_invalidate_caches, 455 .init_mem_type = &radeon_init_mem_type, 456 .evict_flags = &radeon_evict_flags, 457 .move = &radeon_bo_move, 458 .verify_access = &radeon_verify_access, 459 .sync_obj_signaled = &radeon_sync_obj_signaled, 460 .sync_obj_wait = &radeon_sync_obj_wait, 461 .sync_obj_flush = &radeon_sync_obj_flush, 462 .sync_obj_unref = &radeon_sync_obj_unref, 463 .sync_obj_ref = &radeon_sync_obj_ref, 464 .move_notify = &radeon_bo_move_notify, 465 .fault_reserve_notify = &radeon_bo_fault_reserve_notify, 466 }; 467 468 int radeon_ttm_init(struct radeon_device *rdev) 469 { 470 int r; 471 472 r = radeon_ttm_global_init(rdev); 473 if (r) { 474 return r; 475 } 476 /* No others user of address space so set it to 0 */ 477 r = ttm_bo_device_init(&rdev->mman.bdev, 478 rdev->mman.bo_global_ref.ref.object, 479 &radeon_bo_driver, DRM_FILE_PAGE_OFFSET, 480 rdev->need_dma32); 481 if (r) { 482 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 483 return r; 484 } 485 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM, 486 0, rdev->mc.real_vram_size >> PAGE_SHIFT); 487 if (r) { 488 DRM_ERROR("Failed initializing VRAM heap.\n"); 489 return r; 490 } 491 r = radeon_bo_create(rdev, NULL, 256 * 1024, true, 492 RADEON_GEM_DOMAIN_VRAM, 493 &rdev->stollen_vga_memory); 494 if (r) { 495 return r; 496 } 497 r = radeon_bo_reserve(rdev->stollen_vga_memory, false); 498 if (r) 499 return r; 500 r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL); 501 radeon_bo_unreserve(rdev->stollen_vga_memory); 502 if (r) { 503 radeon_bo_unref(&rdev->stollen_vga_memory); 504 return r; 505 } 506 DRM_INFO("radeon: %uM of VRAM memory ready\n", 507 (unsigned)rdev->mc.real_vram_size / (1024 * 1024)); 508 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT, 509 0, rdev->mc.gtt_size >> PAGE_SHIFT); 510 if (r) { 511 DRM_ERROR("Failed initializing GTT heap.\n"); 512 return r; 513 } 514 DRM_INFO("radeon: %uM of GTT memory ready.\n", 515 (unsigned)(rdev->mc.gtt_size / (1024 * 1024))); 516 if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) { 517 rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping; 518 } 519 520 r = radeon_ttm_debugfs_init(rdev); 521 if (r) { 522 DRM_ERROR("Failed to init debugfs\n"); 523 return r; 524 } 525 return 0; 526 } 527 528 void radeon_ttm_fini(struct radeon_device *rdev) 529 { 530 int r; 531 532 if (rdev->stollen_vga_memory) { 533 r = radeon_bo_reserve(rdev->stollen_vga_memory, false); 534 if (r == 0) { 535 radeon_bo_unpin(rdev->stollen_vga_memory); 536 radeon_bo_unreserve(rdev->stollen_vga_memory); 537 } 538 radeon_bo_unref(&rdev->stollen_vga_memory); 539 } 540 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM); 541 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT); 542 ttm_bo_device_release(&rdev->mman.bdev); 543 radeon_gart_fini(rdev); 544 radeon_ttm_global_fini(rdev); 545 DRM_INFO("radeon: ttm finalized\n"); 546 } 547 548 static struct vm_operations_struct radeon_ttm_vm_ops; 549 static const struct vm_operations_struct *ttm_vm_ops = NULL; 550 551 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 552 { 553 struct ttm_buffer_object *bo; 554 int r; 555 556 bo = (struct ttm_buffer_object *)vma->vm_private_data; 557 if (bo == NULL) { 558 return VM_FAULT_NOPAGE; 559 } 560 r = ttm_vm_ops->fault(vma, vmf); 561 return r; 562 } 563 564 int radeon_mmap(struct file *filp, struct vm_area_struct *vma) 565 { 566 struct drm_file *file_priv; 567 struct radeon_device *rdev; 568 int r; 569 570 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) { 571 return drm_mmap(filp, vma); 572 } 573 574 file_priv = (struct drm_file *)filp->private_data; 575 rdev = file_priv->minor->dev->dev_private; 576 if (rdev == NULL) { 577 return -EINVAL; 578 } 579 r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev); 580 if (unlikely(r != 0)) { 581 return r; 582 } 583 if (unlikely(ttm_vm_ops == NULL)) { 584 ttm_vm_ops = vma->vm_ops; 585 radeon_ttm_vm_ops = *ttm_vm_ops; 586 radeon_ttm_vm_ops.fault = &radeon_ttm_fault; 587 } 588 vma->vm_ops = &radeon_ttm_vm_ops; 589 return 0; 590 } 591 592 593 /* 594 * TTM backend functions. 595 */ 596 struct radeon_ttm_backend { 597 struct ttm_backend backend; 598 struct radeon_device *rdev; 599 unsigned long num_pages; 600 struct page **pages; 601 struct page *dummy_read_page; 602 bool populated; 603 bool bound; 604 unsigned offset; 605 }; 606 607 static int radeon_ttm_backend_populate(struct ttm_backend *backend, 608 unsigned long num_pages, 609 struct page **pages, 610 struct page *dummy_read_page) 611 { 612 struct radeon_ttm_backend *gtt; 613 614 gtt = container_of(backend, struct radeon_ttm_backend, backend); 615 gtt->pages = pages; 616 gtt->num_pages = num_pages; 617 gtt->dummy_read_page = dummy_read_page; 618 gtt->populated = true; 619 return 0; 620 } 621 622 static void radeon_ttm_backend_clear(struct ttm_backend *backend) 623 { 624 struct radeon_ttm_backend *gtt; 625 626 gtt = container_of(backend, struct radeon_ttm_backend, backend); 627 gtt->pages = NULL; 628 gtt->num_pages = 0; 629 gtt->dummy_read_page = NULL; 630 gtt->populated = false; 631 gtt->bound = false; 632 } 633 634 635 static int radeon_ttm_backend_bind(struct ttm_backend *backend, 636 struct ttm_mem_reg *bo_mem) 637 { 638 struct radeon_ttm_backend *gtt; 639 int r; 640 641 gtt = container_of(backend, struct radeon_ttm_backend, backend); 642 gtt->offset = bo_mem->mm_node->start << PAGE_SHIFT; 643 if (!gtt->num_pages) { 644 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", gtt->num_pages, bo_mem, backend); 645 } 646 r = radeon_gart_bind(gtt->rdev, gtt->offset, 647 gtt->num_pages, gtt->pages); 648 if (r) { 649 DRM_ERROR("failed to bind %lu pages at 0x%08X\n", 650 gtt->num_pages, gtt->offset); 651 return r; 652 } 653 gtt->bound = true; 654 return 0; 655 } 656 657 static int radeon_ttm_backend_unbind(struct ttm_backend *backend) 658 { 659 struct radeon_ttm_backend *gtt; 660 661 gtt = container_of(backend, struct radeon_ttm_backend, backend); 662 radeon_gart_unbind(gtt->rdev, gtt->offset, gtt->num_pages); 663 gtt->bound = false; 664 return 0; 665 } 666 667 static void radeon_ttm_backend_destroy(struct ttm_backend *backend) 668 { 669 struct radeon_ttm_backend *gtt; 670 671 gtt = container_of(backend, struct radeon_ttm_backend, backend); 672 if (gtt->bound) { 673 radeon_ttm_backend_unbind(backend); 674 } 675 kfree(gtt); 676 } 677 678 static struct ttm_backend_func radeon_backend_func = { 679 .populate = &radeon_ttm_backend_populate, 680 .clear = &radeon_ttm_backend_clear, 681 .bind = &radeon_ttm_backend_bind, 682 .unbind = &radeon_ttm_backend_unbind, 683 .destroy = &radeon_ttm_backend_destroy, 684 }; 685 686 struct ttm_backend *radeon_ttm_backend_create(struct radeon_device *rdev) 687 { 688 struct radeon_ttm_backend *gtt; 689 690 gtt = kzalloc(sizeof(struct radeon_ttm_backend), GFP_KERNEL); 691 if (gtt == NULL) { 692 return NULL; 693 } 694 gtt->backend.bdev = &rdev->mman.bdev; 695 gtt->backend.flags = 0; 696 gtt->backend.func = &radeon_backend_func; 697 gtt->rdev = rdev; 698 gtt->pages = NULL; 699 gtt->num_pages = 0; 700 gtt->dummy_read_page = NULL; 701 gtt->populated = false; 702 gtt->bound = false; 703 return >t->backend; 704 } 705 706 #define RADEON_DEBUGFS_MEM_TYPES 2 707 708 #if defined(CONFIG_DEBUG_FS) 709 static int radeon_mm_dump_table(struct seq_file *m, void *data) 710 { 711 struct drm_info_node *node = (struct drm_info_node *)m->private; 712 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data; 713 struct drm_device *dev = node->minor->dev; 714 struct radeon_device *rdev = dev->dev_private; 715 int ret; 716 struct ttm_bo_global *glob = rdev->mman.bdev.glob; 717 718 spin_lock(&glob->lru_lock); 719 ret = drm_mm_dump_table(m, mm); 720 spin_unlock(&glob->lru_lock); 721 return ret; 722 } 723 #endif 724 725 static int radeon_ttm_debugfs_init(struct radeon_device *rdev) 726 { 727 #if defined(CONFIG_DEBUG_FS) 728 static struct drm_info_list radeon_mem_types_list[RADEON_DEBUGFS_MEM_TYPES]; 729 static char radeon_mem_types_names[RADEON_DEBUGFS_MEM_TYPES][32]; 730 unsigned i; 731 732 for (i = 0; i < RADEON_DEBUGFS_MEM_TYPES; i++) { 733 if (i == 0) 734 sprintf(radeon_mem_types_names[i], "radeon_vram_mm"); 735 else 736 sprintf(radeon_mem_types_names[i], "radeon_gtt_mm"); 737 radeon_mem_types_list[i].name = radeon_mem_types_names[i]; 738 radeon_mem_types_list[i].show = &radeon_mm_dump_table; 739 radeon_mem_types_list[i].driver_features = 0; 740 if (i == 0) 741 radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_VRAM].manager; 742 else 743 radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_TT].manager; 744 745 } 746 return radeon_debugfs_add_files(rdev, radeon_mem_types_list, RADEON_DEBUGFS_MEM_TYPES); 747 748 #endif 749 return 0; 750 } 751