1 /* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * Copyright 2009 Jerome Glisse. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alex Deucher 26 * Jerome Glisse 27 */ 28 #include <linux/ktime.h> 29 #include <linux/module.h> 30 #include <linux/pagemap.h> 31 #include <linux/pci.h> 32 33 #include <drm/amdgpu_drm.h> 34 #include <drm/drm_debugfs.h> 35 36 #include "amdgpu.h" 37 #include "amdgpu_display.h" 38 #include "amdgpu_xgmi.h" 39 40 void amdgpu_gem_object_free(struct drm_gem_object *gobj) 41 { 42 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); 43 44 if (robj) { 45 amdgpu_mn_unregister(robj); 46 amdgpu_bo_unref(&robj); 47 } 48 } 49 50 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, 51 int alignment, u32 initial_domain, 52 u64 flags, enum ttm_bo_type type, 53 struct reservation_object *resv, 54 struct drm_gem_object **obj) 55 { 56 struct amdgpu_bo *bo; 57 struct amdgpu_bo_param bp; 58 int r; 59 60 memset(&bp, 0, sizeof(bp)); 61 *obj = NULL; 62 63 bp.size = size; 64 bp.byte_align = alignment; 65 bp.type = type; 66 bp.resv = resv; 67 bp.preferred_domain = initial_domain; 68 retry: 69 bp.flags = flags; 70 bp.domain = initial_domain; 71 r = amdgpu_bo_create(adev, &bp, &bo); 72 if (r) { 73 if (r != -ERESTARTSYS) { 74 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) { 75 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; 76 goto retry; 77 } 78 79 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { 80 initial_domain |= AMDGPU_GEM_DOMAIN_GTT; 81 goto retry; 82 } 83 DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n", 84 size, initial_domain, alignment, r); 85 } 86 return r; 87 } 88 *obj = &bo->gem_base; 89 90 return 0; 91 } 92 93 void amdgpu_gem_force_release(struct amdgpu_device *adev) 94 { 95 struct drm_device *ddev = adev->ddev; 96 struct drm_file *file; 97 98 mutex_lock(&ddev->filelist_mutex); 99 100 list_for_each_entry(file, &ddev->filelist, lhead) { 101 struct drm_gem_object *gobj; 102 int handle; 103 104 WARN_ONCE(1, "Still active user space clients!\n"); 105 spin_lock(&file->table_lock); 106 idr_for_each_entry(&file->object_idr, gobj, handle) { 107 WARN_ONCE(1, "And also active allocations!\n"); 108 drm_gem_object_put_unlocked(gobj); 109 } 110 idr_destroy(&file->object_idr); 111 spin_unlock(&file->table_lock); 112 } 113 114 mutex_unlock(&ddev->filelist_mutex); 115 } 116 117 /* 118 * Call from drm_gem_handle_create which appear in both new and open ioctl 119 * case. 120 */ 121 int amdgpu_gem_object_open(struct drm_gem_object *obj, 122 struct drm_file *file_priv) 123 { 124 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj); 125 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev); 126 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 127 struct amdgpu_vm *vm = &fpriv->vm; 128 struct amdgpu_bo_va *bo_va; 129 struct mm_struct *mm; 130 int r; 131 132 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm); 133 if (mm && mm != current->mm) 134 return -EPERM; 135 136 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID && 137 abo->tbo.resv != vm->root.base.bo->tbo.resv) 138 return -EPERM; 139 140 r = amdgpu_bo_reserve(abo, false); 141 if (r) 142 return r; 143 144 bo_va = amdgpu_vm_bo_find(vm, abo); 145 if (!bo_va) { 146 bo_va = amdgpu_vm_bo_add(adev, vm, abo); 147 } else { 148 ++bo_va->ref_count; 149 } 150 amdgpu_bo_unreserve(abo); 151 return 0; 152 } 153 154 void amdgpu_gem_object_close(struct drm_gem_object *obj, 155 struct drm_file *file_priv) 156 { 157 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); 158 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); 159 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 160 struct amdgpu_vm *vm = &fpriv->vm; 161 162 struct amdgpu_bo_list_entry vm_pd; 163 struct list_head list, duplicates; 164 struct ttm_validate_buffer tv; 165 struct ww_acquire_ctx ticket; 166 struct amdgpu_bo_va *bo_va; 167 int r; 168 169 INIT_LIST_HEAD(&list); 170 INIT_LIST_HEAD(&duplicates); 171 172 tv.bo = &bo->tbo; 173 tv.num_shared = 1; 174 list_add(&tv.head, &list); 175 176 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd); 177 178 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates, true); 179 if (r) { 180 dev_err(adev->dev, "leaking bo va because " 181 "we fail to reserve bo (%d)\n", r); 182 return; 183 } 184 bo_va = amdgpu_vm_bo_find(vm, bo); 185 if (bo_va && --bo_va->ref_count == 0) { 186 amdgpu_vm_bo_rmv(adev, bo_va); 187 188 if (amdgpu_vm_ready(vm)) { 189 struct dma_fence *fence = NULL; 190 191 r = amdgpu_vm_clear_freed(adev, vm, &fence); 192 if (unlikely(r)) { 193 dev_err(adev->dev, "failed to clear page " 194 "tables on GEM object close (%d)\n", r); 195 } 196 197 if (fence) { 198 amdgpu_bo_fence(bo, fence, true); 199 dma_fence_put(fence); 200 } 201 } 202 } 203 ttm_eu_backoff_reservation(&ticket, &list); 204 } 205 206 /* 207 * GEM ioctls. 208 */ 209 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, 210 struct drm_file *filp) 211 { 212 struct amdgpu_device *adev = dev->dev_private; 213 struct amdgpu_fpriv *fpriv = filp->driver_priv; 214 struct amdgpu_vm *vm = &fpriv->vm; 215 union drm_amdgpu_gem_create *args = data; 216 uint64_t flags = args->in.domain_flags; 217 uint64_t size = args->in.bo_size; 218 struct reservation_object *resv = NULL; 219 struct drm_gem_object *gobj; 220 uint32_t handle; 221 int r; 222 223 /* reject invalid gem flags */ 224 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 225 AMDGPU_GEM_CREATE_NO_CPU_ACCESS | 226 AMDGPU_GEM_CREATE_CPU_GTT_USWC | 227 AMDGPU_GEM_CREATE_VRAM_CLEARED | 228 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID | 229 AMDGPU_GEM_CREATE_EXPLICIT_SYNC)) 230 231 return -EINVAL; 232 233 /* reject invalid gem domains */ 234 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK) 235 return -EINVAL; 236 237 /* create a gem object to contain this object in */ 238 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | 239 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { 240 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 241 /* if gds bo is created from user space, it must be 242 * passed to bo list 243 */ 244 DRM_ERROR("GDS bo cannot be per-vm-bo\n"); 245 return -EINVAL; 246 } 247 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS; 248 } 249 250 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 251 r = amdgpu_bo_reserve(vm->root.base.bo, false); 252 if (r) 253 return r; 254 255 resv = vm->root.base.bo->tbo.resv; 256 } 257 258 r = amdgpu_gem_object_create(adev, size, args->in.alignment, 259 (u32)(0xffffffff & args->in.domains), 260 flags, ttm_bo_type_device, resv, &gobj); 261 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 262 if (!r) { 263 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); 264 265 abo->parent = amdgpu_bo_ref(vm->root.base.bo); 266 } 267 amdgpu_bo_unreserve(vm->root.base.bo); 268 } 269 if (r) 270 return r; 271 272 r = drm_gem_handle_create(filp, gobj, &handle); 273 /* drop reference from allocate - handle holds it now */ 274 drm_gem_object_put_unlocked(gobj); 275 if (r) 276 return r; 277 278 memset(args, 0, sizeof(*args)); 279 args->out.handle = handle; 280 return 0; 281 } 282 283 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, 284 struct drm_file *filp) 285 { 286 struct ttm_operation_ctx ctx = { true, false }; 287 struct amdgpu_device *adev = dev->dev_private; 288 struct drm_amdgpu_gem_userptr *args = data; 289 struct drm_gem_object *gobj; 290 struct amdgpu_bo *bo; 291 uint32_t handle; 292 int r; 293 294 if (offset_in_page(args->addr | args->size)) 295 return -EINVAL; 296 297 /* reject unknown flag values */ 298 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | 299 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | 300 AMDGPU_GEM_USERPTR_REGISTER)) 301 return -EINVAL; 302 303 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && 304 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { 305 306 /* if we want to write to it we must install a MMU notifier */ 307 return -EACCES; 308 } 309 310 /* create a gem object to contain this object in */ 311 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 312 0, ttm_bo_type_device, NULL, &gobj); 313 if (r) 314 return r; 315 316 bo = gem_to_amdgpu_bo(gobj); 317 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; 318 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; 319 r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags); 320 if (r) 321 goto release_object; 322 323 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) { 324 r = amdgpu_mn_register(bo, args->addr); 325 if (r) 326 goto release_object; 327 } 328 329 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { 330 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm, 331 bo->tbo.ttm->pages); 332 if (r) 333 goto release_object; 334 335 r = amdgpu_bo_reserve(bo, true); 336 if (r) 337 goto user_pages_done; 338 339 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); 340 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 341 amdgpu_bo_unreserve(bo); 342 if (r) 343 goto user_pages_done; 344 } 345 346 r = drm_gem_handle_create(filp, gobj, &handle); 347 if (r) 348 goto user_pages_done; 349 350 args->handle = handle; 351 352 user_pages_done: 353 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) 354 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm); 355 356 release_object: 357 drm_gem_object_put_unlocked(gobj); 358 359 return r; 360 } 361 362 int amdgpu_mode_dumb_mmap(struct drm_file *filp, 363 struct drm_device *dev, 364 uint32_t handle, uint64_t *offset_p) 365 { 366 struct drm_gem_object *gobj; 367 struct amdgpu_bo *robj; 368 369 gobj = drm_gem_object_lookup(filp, handle); 370 if (gobj == NULL) { 371 return -ENOENT; 372 } 373 robj = gem_to_amdgpu_bo(gobj); 374 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) || 375 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { 376 drm_gem_object_put_unlocked(gobj); 377 return -EPERM; 378 } 379 *offset_p = amdgpu_bo_mmap_offset(robj); 380 drm_gem_object_put_unlocked(gobj); 381 return 0; 382 } 383 384 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, 385 struct drm_file *filp) 386 { 387 union drm_amdgpu_gem_mmap *args = data; 388 uint32_t handle = args->in.handle; 389 memset(args, 0, sizeof(*args)); 390 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr); 391 } 392 393 /** 394 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value 395 * 396 * @timeout_ns: timeout in ns 397 * 398 * Calculate the timeout in jiffies from an absolute timeout in ns. 399 */ 400 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns) 401 { 402 unsigned long timeout_jiffies; 403 ktime_t timeout; 404 405 /* clamp timeout if it's to large */ 406 if (((int64_t)timeout_ns) < 0) 407 return MAX_SCHEDULE_TIMEOUT; 408 409 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); 410 if (ktime_to_ns(timeout) < 0) 411 return 0; 412 413 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); 414 /* clamp timeout to avoid unsigned-> signed overflow */ 415 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT ) 416 return MAX_SCHEDULE_TIMEOUT - 1; 417 418 return timeout_jiffies; 419 } 420 421 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, 422 struct drm_file *filp) 423 { 424 union drm_amdgpu_gem_wait_idle *args = data; 425 struct drm_gem_object *gobj; 426 struct amdgpu_bo *robj; 427 uint32_t handle = args->in.handle; 428 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); 429 int r = 0; 430 long ret; 431 432 gobj = drm_gem_object_lookup(filp, handle); 433 if (gobj == NULL) { 434 return -ENOENT; 435 } 436 robj = gem_to_amdgpu_bo(gobj); 437 ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, 438 timeout); 439 440 /* ret == 0 means not signaled, 441 * ret > 0 means signaled 442 * ret < 0 means interrupted before timeout 443 */ 444 if (ret >= 0) { 445 memset(args, 0, sizeof(*args)); 446 args->out.status = (ret == 0); 447 } else 448 r = ret; 449 450 drm_gem_object_put_unlocked(gobj); 451 return r; 452 } 453 454 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, 455 struct drm_file *filp) 456 { 457 struct drm_amdgpu_gem_metadata *args = data; 458 struct drm_gem_object *gobj; 459 struct amdgpu_bo *robj; 460 int r = -1; 461 462 DRM_DEBUG("%d \n", args->handle); 463 gobj = drm_gem_object_lookup(filp, args->handle); 464 if (gobj == NULL) 465 return -ENOENT; 466 robj = gem_to_amdgpu_bo(gobj); 467 468 r = amdgpu_bo_reserve(robj, false); 469 if (unlikely(r != 0)) 470 goto out; 471 472 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { 473 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); 474 r = amdgpu_bo_get_metadata(robj, args->data.data, 475 sizeof(args->data.data), 476 &args->data.data_size_bytes, 477 &args->data.flags); 478 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { 479 if (args->data.data_size_bytes > sizeof(args->data.data)) { 480 r = -EINVAL; 481 goto unreserve; 482 } 483 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); 484 if (!r) 485 r = amdgpu_bo_set_metadata(robj, args->data.data, 486 args->data.data_size_bytes, 487 args->data.flags); 488 } 489 490 unreserve: 491 amdgpu_bo_unreserve(robj); 492 out: 493 drm_gem_object_put_unlocked(gobj); 494 return r; 495 } 496 497 /** 498 * amdgpu_gem_va_update_vm -update the bo_va in its VM 499 * 500 * @adev: amdgpu_device pointer 501 * @vm: vm to update 502 * @bo_va: bo_va to update 503 * @operation: map, unmap or clear 504 * 505 * Update the bo_va directly after setting its address. Errors are not 506 * vital here, so they are not reported back to userspace. 507 */ 508 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, 509 struct amdgpu_vm *vm, 510 struct amdgpu_bo_va *bo_va, 511 uint32_t operation) 512 { 513 int r; 514 515 if (!amdgpu_vm_ready(vm)) 516 return; 517 518 r = amdgpu_vm_clear_freed(adev, vm, NULL); 519 if (r) 520 goto error; 521 522 if (operation == AMDGPU_VA_OP_MAP || 523 operation == AMDGPU_VA_OP_REPLACE) { 524 r = amdgpu_vm_bo_update(adev, bo_va, false); 525 if (r) 526 goto error; 527 } 528 529 r = amdgpu_vm_update_directories(adev, vm); 530 531 error: 532 if (r && r != -ERESTARTSYS) 533 DRM_ERROR("Couldn't update BO_VA (%d)\n", r); 534 } 535 536 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, 537 struct drm_file *filp) 538 { 539 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE | 540 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE | 541 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK; 542 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE | 543 AMDGPU_VM_PAGE_PRT; 544 545 struct drm_amdgpu_gem_va *args = data; 546 struct drm_gem_object *gobj; 547 struct amdgpu_device *adev = dev->dev_private; 548 struct amdgpu_fpriv *fpriv = filp->driver_priv; 549 struct amdgpu_bo *abo; 550 struct amdgpu_bo_va *bo_va; 551 struct amdgpu_bo_list_entry vm_pd; 552 struct ttm_validate_buffer tv; 553 struct ww_acquire_ctx ticket; 554 struct list_head list, duplicates; 555 uint64_t va_flags; 556 int r = 0; 557 558 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) { 559 dev_dbg(&dev->pdev->dev, 560 "va_address 0x%LX is in reserved area 0x%LX\n", 561 args->va_address, AMDGPU_VA_RESERVED_SIZE); 562 return -EINVAL; 563 } 564 565 if (args->va_address >= AMDGPU_GMC_HOLE_START && 566 args->va_address < AMDGPU_GMC_HOLE_END) { 567 dev_dbg(&dev->pdev->dev, 568 "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n", 569 args->va_address, AMDGPU_GMC_HOLE_START, 570 AMDGPU_GMC_HOLE_END); 571 return -EINVAL; 572 } 573 574 args->va_address &= AMDGPU_GMC_HOLE_MASK; 575 576 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) { 577 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n", 578 args->flags); 579 return -EINVAL; 580 } 581 582 switch (args->operation) { 583 case AMDGPU_VA_OP_MAP: 584 case AMDGPU_VA_OP_UNMAP: 585 case AMDGPU_VA_OP_CLEAR: 586 case AMDGPU_VA_OP_REPLACE: 587 break; 588 default: 589 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n", 590 args->operation); 591 return -EINVAL; 592 } 593 594 INIT_LIST_HEAD(&list); 595 INIT_LIST_HEAD(&duplicates); 596 if ((args->operation != AMDGPU_VA_OP_CLEAR) && 597 !(args->flags & AMDGPU_VM_PAGE_PRT)) { 598 gobj = drm_gem_object_lookup(filp, args->handle); 599 if (gobj == NULL) 600 return -ENOENT; 601 abo = gem_to_amdgpu_bo(gobj); 602 tv.bo = &abo->tbo; 603 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 604 tv.num_shared = 1; 605 else 606 tv.num_shared = 0; 607 list_add(&tv.head, &list); 608 } else { 609 gobj = NULL; 610 abo = NULL; 611 } 612 613 amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd); 614 615 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates, true); 616 if (r) 617 goto error_unref; 618 619 if (abo) { 620 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo); 621 if (!bo_va) { 622 r = -ENOENT; 623 goto error_backoff; 624 } 625 } else if (args->operation != AMDGPU_VA_OP_CLEAR) { 626 bo_va = fpriv->prt_va; 627 } else { 628 bo_va = NULL; 629 } 630 631 switch (args->operation) { 632 case AMDGPU_VA_OP_MAP: 633 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags); 634 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address, 635 args->offset_in_bo, args->map_size, 636 va_flags); 637 break; 638 case AMDGPU_VA_OP_UNMAP: 639 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address); 640 break; 641 642 case AMDGPU_VA_OP_CLEAR: 643 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm, 644 args->va_address, 645 args->map_size); 646 break; 647 case AMDGPU_VA_OP_REPLACE: 648 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags); 649 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address, 650 args->offset_in_bo, args->map_size, 651 va_flags); 652 break; 653 default: 654 break; 655 } 656 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug) 657 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, 658 args->operation); 659 660 error_backoff: 661 ttm_eu_backoff_reservation(&ticket, &list); 662 663 error_unref: 664 drm_gem_object_put_unlocked(gobj); 665 return r; 666 } 667 668 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data, 669 struct drm_file *filp) 670 { 671 struct amdgpu_device *adev = dev->dev_private; 672 struct drm_amdgpu_gem_op *args = data; 673 struct drm_gem_object *gobj; 674 struct amdgpu_vm_bo_base *base; 675 struct amdgpu_bo *robj; 676 int r; 677 678 gobj = drm_gem_object_lookup(filp, args->handle); 679 if (gobj == NULL) { 680 return -ENOENT; 681 } 682 robj = gem_to_amdgpu_bo(gobj); 683 684 r = amdgpu_bo_reserve(robj, false); 685 if (unlikely(r)) 686 goto out; 687 688 switch (args->op) { 689 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: { 690 struct drm_amdgpu_gem_create_in info; 691 void __user *out = u64_to_user_ptr(args->value); 692 693 info.bo_size = robj->gem_base.size; 694 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT; 695 info.domains = robj->preferred_domains; 696 info.domain_flags = robj->flags; 697 amdgpu_bo_unreserve(robj); 698 if (copy_to_user(out, &info, sizeof(info))) 699 r = -EFAULT; 700 break; 701 } 702 case AMDGPU_GEM_OP_SET_PLACEMENT: 703 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) { 704 r = -EINVAL; 705 amdgpu_bo_unreserve(robj); 706 break; 707 } 708 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) { 709 r = -EPERM; 710 amdgpu_bo_unreserve(robj); 711 break; 712 } 713 for (base = robj->vm_bo; base; base = base->next) 714 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev), 715 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) { 716 r = -EINVAL; 717 amdgpu_bo_unreserve(robj); 718 goto out; 719 } 720 721 722 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM | 723 AMDGPU_GEM_DOMAIN_GTT | 724 AMDGPU_GEM_DOMAIN_CPU); 725 robj->allowed_domains = robj->preferred_domains; 726 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM) 727 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT; 728 729 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 730 amdgpu_vm_bo_invalidate(adev, robj, true); 731 732 amdgpu_bo_unreserve(robj); 733 break; 734 default: 735 amdgpu_bo_unreserve(robj); 736 r = -EINVAL; 737 } 738 739 out: 740 drm_gem_object_put_unlocked(gobj); 741 return r; 742 } 743 744 int amdgpu_mode_dumb_create(struct drm_file *file_priv, 745 struct drm_device *dev, 746 struct drm_mode_create_dumb *args) 747 { 748 struct amdgpu_device *adev = dev->dev_private; 749 struct drm_gem_object *gobj; 750 uint32_t handle; 751 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; 752 u32 domain; 753 int r; 754 755 /* 756 * The buffer returned from this function should be cleared, but 757 * it can only be done if the ring is enabled or we'll fail to 758 * create the buffer. 759 */ 760 if (adev->mman.buffer_funcs_enabled) 761 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; 762 763 args->pitch = amdgpu_align_pitch(adev, args->width, 764 DIV_ROUND_UP(args->bpp, 8), 0); 765 args->size = (u64)args->pitch * args->height; 766 args->size = ALIGN(args->size, PAGE_SIZE); 767 domain = amdgpu_bo_get_preferred_pin_domain(adev, 768 amdgpu_display_supported_domains(adev)); 769 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags, 770 ttm_bo_type_device, NULL, &gobj); 771 if (r) 772 return -ENOMEM; 773 774 r = drm_gem_handle_create(file_priv, gobj, &handle); 775 /* drop reference from allocate - handle holds it now */ 776 drm_gem_object_put_unlocked(gobj); 777 if (r) { 778 return r; 779 } 780 args->handle = handle; 781 return 0; 782 } 783 784 #if defined(CONFIG_DEBUG_FS) 785 786 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag) \ 787 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \ 788 seq_printf((m), " " #flag); \ 789 } 790 791 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data) 792 { 793 struct drm_gem_object *gobj = ptr; 794 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); 795 struct seq_file *m = data; 796 797 struct dma_buf_attachment *attachment; 798 struct dma_buf *dma_buf; 799 unsigned domain; 800 const char *placement; 801 unsigned pin_count; 802 803 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); 804 switch (domain) { 805 case AMDGPU_GEM_DOMAIN_VRAM: 806 placement = "VRAM"; 807 break; 808 case AMDGPU_GEM_DOMAIN_GTT: 809 placement = " GTT"; 810 break; 811 case AMDGPU_GEM_DOMAIN_CPU: 812 default: 813 placement = " CPU"; 814 break; 815 } 816 seq_printf(m, "\t0x%08x: %12ld byte %s", 817 id, amdgpu_bo_size(bo), placement); 818 819 pin_count = READ_ONCE(bo->pin_count); 820 if (pin_count) 821 seq_printf(m, " pin count %d", pin_count); 822 823 dma_buf = READ_ONCE(bo->gem_base.dma_buf); 824 attachment = READ_ONCE(bo->gem_base.import_attach); 825 826 if (attachment) 827 seq_printf(m, " imported from %p", dma_buf); 828 else if (dma_buf) 829 seq_printf(m, " exported as %p", dma_buf); 830 831 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED); 832 amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS); 833 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC); 834 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED); 835 amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW); 836 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS); 837 amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID); 838 amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC); 839 840 seq_printf(m, "\n"); 841 842 return 0; 843 } 844 845 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) 846 { 847 struct drm_info_node *node = (struct drm_info_node *)m->private; 848 struct drm_device *dev = node->minor->dev; 849 struct drm_file *file; 850 int r; 851 852 r = mutex_lock_interruptible(&dev->filelist_mutex); 853 if (r) 854 return r; 855 856 list_for_each_entry(file, &dev->filelist, lhead) { 857 struct task_struct *task; 858 859 /* 860 * Although we have a valid reference on file->pid, that does 861 * not guarantee that the task_struct who called get_pid() is 862 * still alive (e.g. get_pid(current) => fork() => exit()). 863 * Therefore, we need to protect this ->comm access using RCU. 864 */ 865 rcu_read_lock(); 866 task = pid_task(file->pid, PIDTYPE_PID); 867 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid), 868 task ? task->comm : "<unknown>"); 869 rcu_read_unlock(); 870 871 spin_lock(&file->table_lock); 872 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m); 873 spin_unlock(&file->table_lock); 874 } 875 876 mutex_unlock(&dev->filelist_mutex); 877 return 0; 878 } 879 880 static const struct drm_info_list amdgpu_debugfs_gem_list[] = { 881 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL}, 882 }; 883 #endif 884 885 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev) 886 { 887 #if defined(CONFIG_DEBUG_FS) 888 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1); 889 #endif 890 return 0; 891 } 892