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 #include <linux/dma-buf.h> 33 34 #include <drm/amdgpu_drm.h> 35 #include <drm/drm_debugfs.h> 36 37 #include "amdgpu.h" 38 #include "amdgpu_display.h" 39 #include "amdgpu_xgmi.h" 40 41 void amdgpu_gem_object_free(struct drm_gem_object *gobj) 42 { 43 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); 44 45 if (robj) { 46 amdgpu_mn_unregister(robj); 47 amdgpu_bo_unref(&robj); 48 } 49 } 50 51 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, 52 int alignment, u32 initial_domain, 53 u64 flags, enum ttm_bo_type type, 54 struct dma_resv *resv, 55 struct drm_gem_object **obj) 56 { 57 struct amdgpu_bo *bo; 58 struct amdgpu_bo_param bp; 59 int r; 60 61 memset(&bp, 0, sizeof(bp)); 62 *obj = NULL; 63 64 bp.size = size; 65 bp.byte_align = alignment; 66 bp.type = type; 67 bp.resv = resv; 68 bp.preferred_domain = initial_domain; 69 retry: 70 bp.flags = flags; 71 bp.domain = initial_domain; 72 r = amdgpu_bo_create(adev, &bp, &bo); 73 if (r) { 74 if (r != -ERESTARTSYS) { 75 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) { 76 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; 77 goto retry; 78 } 79 80 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { 81 initial_domain |= AMDGPU_GEM_DOMAIN_GTT; 82 goto retry; 83 } 84 DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n", 85 size, initial_domain, alignment, r); 86 } 87 return r; 88 } 89 *obj = &bo->tbo.base; 90 91 return 0; 92 } 93 94 void amdgpu_gem_force_release(struct amdgpu_device *adev) 95 { 96 struct drm_device *ddev = adev->ddev; 97 struct drm_file *file; 98 99 mutex_lock(&ddev->filelist_mutex); 100 101 list_for_each_entry(file, &ddev->filelist, lhead) { 102 struct drm_gem_object *gobj; 103 int handle; 104 105 WARN_ONCE(1, "Still active user space clients!\n"); 106 spin_lock(&file->table_lock); 107 idr_for_each_entry(&file->object_idr, gobj, handle) { 108 WARN_ONCE(1, "And also active allocations!\n"); 109 drm_gem_object_put_unlocked(gobj); 110 } 111 idr_destroy(&file->object_idr); 112 spin_unlock(&file->table_lock); 113 } 114 115 mutex_unlock(&ddev->filelist_mutex); 116 } 117 118 /* 119 * Call from drm_gem_handle_create which appear in both new and open ioctl 120 * case. 121 */ 122 int amdgpu_gem_object_open(struct drm_gem_object *obj, 123 struct drm_file *file_priv) 124 { 125 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj); 126 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev); 127 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 128 struct amdgpu_vm *vm = &fpriv->vm; 129 struct amdgpu_bo_va *bo_va; 130 struct mm_struct *mm; 131 int r; 132 133 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm); 134 if (mm && mm != current->mm) 135 return -EPERM; 136 137 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID && 138 abo->tbo.base.resv != vm->root.base.bo->tbo.base.resv) 139 return -EPERM; 140 141 r = amdgpu_bo_reserve(abo, false); 142 if (r) 143 return r; 144 145 bo_va = amdgpu_vm_bo_find(vm, abo); 146 if (!bo_va) { 147 bo_va = amdgpu_vm_bo_add(adev, vm, abo); 148 } else { 149 ++bo_va->ref_count; 150 } 151 amdgpu_bo_unreserve(abo); 152 return 0; 153 } 154 155 void amdgpu_gem_object_close(struct drm_gem_object *obj, 156 struct drm_file *file_priv) 157 { 158 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); 159 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); 160 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 161 struct amdgpu_vm *vm = &fpriv->vm; 162 163 struct amdgpu_bo_list_entry vm_pd; 164 struct list_head list, duplicates; 165 struct dma_fence *fence = NULL; 166 struct ttm_validate_buffer tv; 167 struct ww_acquire_ctx ticket; 168 struct amdgpu_bo_va *bo_va; 169 long r; 170 171 INIT_LIST_HEAD(&list); 172 INIT_LIST_HEAD(&duplicates); 173 174 tv.bo = &bo->tbo; 175 tv.num_shared = 2; 176 list_add(&tv.head, &list); 177 178 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd); 179 180 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates); 181 if (r) { 182 dev_err(adev->dev, "leaking bo va because " 183 "we fail to reserve bo (%ld)\n", r); 184 return; 185 } 186 bo_va = amdgpu_vm_bo_find(vm, bo); 187 if (!bo_va || --bo_va->ref_count) 188 goto out_unlock; 189 190 amdgpu_vm_bo_rmv(adev, bo_va); 191 if (!amdgpu_vm_ready(vm)) 192 goto out_unlock; 193 194 fence = dma_resv_get_excl(bo->tbo.base.resv); 195 if (fence) { 196 amdgpu_bo_fence(bo, fence, true); 197 fence = NULL; 198 } 199 200 r = amdgpu_vm_clear_freed(adev, vm, &fence); 201 if (r || !fence) 202 goto out_unlock; 203 204 amdgpu_bo_fence(bo, fence, true); 205 dma_fence_put(fence); 206 207 out_unlock: 208 if (unlikely(r < 0)) 209 dev_err(adev->dev, "failed to clear page " 210 "tables on GEM object close (%ld)\n", r); 211 ttm_eu_backoff_reservation(&ticket, &list); 212 } 213 214 /* 215 * GEM ioctls. 216 */ 217 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, 218 struct drm_file *filp) 219 { 220 struct amdgpu_device *adev = dev->dev_private; 221 struct amdgpu_fpriv *fpriv = filp->driver_priv; 222 struct amdgpu_vm *vm = &fpriv->vm; 223 union drm_amdgpu_gem_create *args = data; 224 uint64_t flags = args->in.domain_flags; 225 uint64_t size = args->in.bo_size; 226 struct dma_resv *resv = NULL; 227 struct drm_gem_object *gobj; 228 uint32_t handle; 229 int r; 230 231 /* reject invalid gem flags */ 232 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 233 AMDGPU_GEM_CREATE_NO_CPU_ACCESS | 234 AMDGPU_GEM_CREATE_CPU_GTT_USWC | 235 AMDGPU_GEM_CREATE_VRAM_CLEARED | 236 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID | 237 AMDGPU_GEM_CREATE_EXPLICIT_SYNC | 238 AMDGPU_GEM_CREATE_ENCRYPTED)) 239 240 return -EINVAL; 241 242 /* reject invalid gem domains */ 243 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK) 244 return -EINVAL; 245 246 if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) { 247 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n"); 248 return -EINVAL; 249 } 250 251 /* create a gem object to contain this object in */ 252 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | 253 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { 254 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 255 /* if gds bo is created from user space, it must be 256 * passed to bo list 257 */ 258 DRM_ERROR("GDS bo cannot be per-vm-bo\n"); 259 return -EINVAL; 260 } 261 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS; 262 } 263 264 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 265 r = amdgpu_bo_reserve(vm->root.base.bo, false); 266 if (r) 267 return r; 268 269 resv = vm->root.base.bo->tbo.base.resv; 270 } 271 272 r = amdgpu_gem_object_create(adev, size, args->in.alignment, 273 (u32)(0xffffffff & args->in.domains), 274 flags, ttm_bo_type_device, resv, &gobj); 275 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 276 if (!r) { 277 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); 278 279 abo->parent = amdgpu_bo_ref(vm->root.base.bo); 280 } 281 amdgpu_bo_unreserve(vm->root.base.bo); 282 } 283 if (r) 284 return r; 285 286 r = drm_gem_handle_create(filp, gobj, &handle); 287 /* drop reference from allocate - handle holds it now */ 288 drm_gem_object_put_unlocked(gobj); 289 if (r) 290 return r; 291 292 memset(args, 0, sizeof(*args)); 293 args->out.handle = handle; 294 return 0; 295 } 296 297 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, 298 struct drm_file *filp) 299 { 300 struct ttm_operation_ctx ctx = { true, false }; 301 struct amdgpu_device *adev = dev->dev_private; 302 struct drm_amdgpu_gem_userptr *args = data; 303 struct drm_gem_object *gobj; 304 struct amdgpu_bo *bo; 305 uint32_t handle; 306 int r; 307 308 args->addr = untagged_addr(args->addr); 309 310 if (offset_in_page(args->addr | args->size)) 311 return -EINVAL; 312 313 /* reject unknown flag values */ 314 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | 315 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | 316 AMDGPU_GEM_USERPTR_REGISTER)) 317 return -EINVAL; 318 319 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && 320 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { 321 322 /* if we want to write to it we must install a MMU notifier */ 323 return -EACCES; 324 } 325 326 /* create a gem object to contain this object in */ 327 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 328 0, ttm_bo_type_device, NULL, &gobj); 329 if (r) 330 return r; 331 332 bo = gem_to_amdgpu_bo(gobj); 333 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; 334 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; 335 r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags); 336 if (r) 337 goto release_object; 338 339 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) { 340 r = amdgpu_mn_register(bo, args->addr); 341 if (r) 342 goto release_object; 343 } 344 345 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { 346 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages); 347 if (r) 348 goto release_object; 349 350 r = amdgpu_bo_reserve(bo, true); 351 if (r) 352 goto user_pages_done; 353 354 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); 355 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 356 amdgpu_bo_unreserve(bo); 357 if (r) 358 goto user_pages_done; 359 } 360 361 r = drm_gem_handle_create(filp, gobj, &handle); 362 if (r) 363 goto user_pages_done; 364 365 args->handle = handle; 366 367 user_pages_done: 368 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) 369 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm); 370 371 release_object: 372 drm_gem_object_put_unlocked(gobj); 373 374 return r; 375 } 376 377 int amdgpu_mode_dumb_mmap(struct drm_file *filp, 378 struct drm_device *dev, 379 uint32_t handle, uint64_t *offset_p) 380 { 381 struct drm_gem_object *gobj; 382 struct amdgpu_bo *robj; 383 384 gobj = drm_gem_object_lookup(filp, handle); 385 if (gobj == NULL) { 386 return -ENOENT; 387 } 388 robj = gem_to_amdgpu_bo(gobj); 389 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) || 390 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { 391 drm_gem_object_put_unlocked(gobj); 392 return -EPERM; 393 } 394 *offset_p = amdgpu_bo_mmap_offset(robj); 395 drm_gem_object_put_unlocked(gobj); 396 return 0; 397 } 398 399 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, 400 struct drm_file *filp) 401 { 402 union drm_amdgpu_gem_mmap *args = data; 403 uint32_t handle = args->in.handle; 404 memset(args, 0, sizeof(*args)); 405 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr); 406 } 407 408 /** 409 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value 410 * 411 * @timeout_ns: timeout in ns 412 * 413 * Calculate the timeout in jiffies from an absolute timeout in ns. 414 */ 415 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns) 416 { 417 unsigned long timeout_jiffies; 418 ktime_t timeout; 419 420 /* clamp timeout if it's to large */ 421 if (((int64_t)timeout_ns) < 0) 422 return MAX_SCHEDULE_TIMEOUT; 423 424 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); 425 if (ktime_to_ns(timeout) < 0) 426 return 0; 427 428 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); 429 /* clamp timeout to avoid unsigned-> signed overflow */ 430 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT ) 431 return MAX_SCHEDULE_TIMEOUT - 1; 432 433 return timeout_jiffies; 434 } 435 436 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, 437 struct drm_file *filp) 438 { 439 union drm_amdgpu_gem_wait_idle *args = data; 440 struct drm_gem_object *gobj; 441 struct amdgpu_bo *robj; 442 uint32_t handle = args->in.handle; 443 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); 444 int r = 0; 445 long ret; 446 447 gobj = drm_gem_object_lookup(filp, handle); 448 if (gobj == NULL) { 449 return -ENOENT; 450 } 451 robj = gem_to_amdgpu_bo(gobj); 452 ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 453 timeout); 454 455 /* ret == 0 means not signaled, 456 * ret > 0 means signaled 457 * ret < 0 means interrupted before timeout 458 */ 459 if (ret >= 0) { 460 memset(args, 0, sizeof(*args)); 461 args->out.status = (ret == 0); 462 } else 463 r = ret; 464 465 drm_gem_object_put_unlocked(gobj); 466 return r; 467 } 468 469 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, 470 struct drm_file *filp) 471 { 472 struct drm_amdgpu_gem_metadata *args = data; 473 struct drm_gem_object *gobj; 474 struct amdgpu_bo *robj; 475 int r = -1; 476 477 DRM_DEBUG("%d \n", args->handle); 478 gobj = drm_gem_object_lookup(filp, args->handle); 479 if (gobj == NULL) 480 return -ENOENT; 481 robj = gem_to_amdgpu_bo(gobj); 482 483 r = amdgpu_bo_reserve(robj, false); 484 if (unlikely(r != 0)) 485 goto out; 486 487 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { 488 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); 489 r = amdgpu_bo_get_metadata(robj, args->data.data, 490 sizeof(args->data.data), 491 &args->data.data_size_bytes, 492 &args->data.flags); 493 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { 494 if (args->data.data_size_bytes > sizeof(args->data.data)) { 495 r = -EINVAL; 496 goto unreserve; 497 } 498 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); 499 if (!r) 500 r = amdgpu_bo_set_metadata(robj, args->data.data, 501 args->data.data_size_bytes, 502 args->data.flags); 503 } 504 505 unreserve: 506 amdgpu_bo_unreserve(robj); 507 out: 508 drm_gem_object_put_unlocked(gobj); 509 return r; 510 } 511 512 /** 513 * amdgpu_gem_va_update_vm -update the bo_va in its VM 514 * 515 * @adev: amdgpu_device pointer 516 * @vm: vm to update 517 * @bo_va: bo_va to update 518 * @operation: map, unmap or clear 519 * 520 * Update the bo_va directly after setting its address. Errors are not 521 * vital here, so they are not reported back to userspace. 522 */ 523 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, 524 struct amdgpu_vm *vm, 525 struct amdgpu_bo_va *bo_va, 526 uint32_t operation) 527 { 528 int r; 529 530 if (!amdgpu_vm_ready(vm)) 531 return; 532 533 r = amdgpu_vm_clear_freed(adev, vm, NULL); 534 if (r) 535 goto error; 536 537 if (operation == AMDGPU_VA_OP_MAP || 538 operation == AMDGPU_VA_OP_REPLACE) { 539 r = amdgpu_vm_bo_update(adev, bo_va, false); 540 if (r) 541 goto error; 542 } 543 544 r = amdgpu_vm_update_pdes(adev, vm, false); 545 546 error: 547 if (r && r != -ERESTARTSYS) 548 DRM_ERROR("Couldn't update BO_VA (%d)\n", r); 549 } 550 551 /** 552 * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags 553 * 554 * @adev: amdgpu_device pointer 555 * @flags: GEM UAPI flags 556 * 557 * Returns the GEM UAPI flags mapped into hardware for the ASIC. 558 */ 559 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags) 560 { 561 uint64_t pte_flag = 0; 562 563 if (flags & AMDGPU_VM_PAGE_EXECUTABLE) 564 pte_flag |= AMDGPU_PTE_EXECUTABLE; 565 if (flags & AMDGPU_VM_PAGE_READABLE) 566 pte_flag |= AMDGPU_PTE_READABLE; 567 if (flags & AMDGPU_VM_PAGE_WRITEABLE) 568 pte_flag |= AMDGPU_PTE_WRITEABLE; 569 if (flags & AMDGPU_VM_PAGE_PRT) 570 pte_flag |= AMDGPU_PTE_PRT; 571 572 if (adev->gmc.gmc_funcs->map_mtype) 573 pte_flag |= amdgpu_gmc_map_mtype(adev, 574 flags & AMDGPU_VM_MTYPE_MASK); 575 576 return pte_flag; 577 } 578 579 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, 580 struct drm_file *filp) 581 { 582 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE | 583 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE | 584 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK; 585 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE | 586 AMDGPU_VM_PAGE_PRT; 587 588 struct drm_amdgpu_gem_va *args = data; 589 struct drm_gem_object *gobj; 590 struct amdgpu_device *adev = dev->dev_private; 591 struct amdgpu_fpriv *fpriv = filp->driver_priv; 592 struct amdgpu_bo *abo; 593 struct amdgpu_bo_va *bo_va; 594 struct amdgpu_bo_list_entry vm_pd; 595 struct ttm_validate_buffer tv; 596 struct ww_acquire_ctx ticket; 597 struct list_head list, duplicates; 598 uint64_t va_flags; 599 int r = 0; 600 601 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) { 602 dev_dbg(&dev->pdev->dev, 603 "va_address 0x%LX is in reserved area 0x%LX\n", 604 args->va_address, AMDGPU_VA_RESERVED_SIZE); 605 return -EINVAL; 606 } 607 608 if (args->va_address >= AMDGPU_GMC_HOLE_START && 609 args->va_address < AMDGPU_GMC_HOLE_END) { 610 dev_dbg(&dev->pdev->dev, 611 "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n", 612 args->va_address, AMDGPU_GMC_HOLE_START, 613 AMDGPU_GMC_HOLE_END); 614 return -EINVAL; 615 } 616 617 args->va_address &= AMDGPU_GMC_HOLE_MASK; 618 619 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) { 620 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n", 621 args->flags); 622 return -EINVAL; 623 } 624 625 switch (args->operation) { 626 case AMDGPU_VA_OP_MAP: 627 case AMDGPU_VA_OP_UNMAP: 628 case AMDGPU_VA_OP_CLEAR: 629 case AMDGPU_VA_OP_REPLACE: 630 break; 631 default: 632 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n", 633 args->operation); 634 return -EINVAL; 635 } 636 637 INIT_LIST_HEAD(&list); 638 INIT_LIST_HEAD(&duplicates); 639 if ((args->operation != AMDGPU_VA_OP_CLEAR) && 640 !(args->flags & AMDGPU_VM_PAGE_PRT)) { 641 gobj = drm_gem_object_lookup(filp, args->handle); 642 if (gobj == NULL) 643 return -ENOENT; 644 abo = gem_to_amdgpu_bo(gobj); 645 tv.bo = &abo->tbo; 646 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 647 tv.num_shared = 1; 648 else 649 tv.num_shared = 0; 650 list_add(&tv.head, &list); 651 } else { 652 gobj = NULL; 653 abo = NULL; 654 } 655 656 amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd); 657 658 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates); 659 if (r) 660 goto error_unref; 661 662 if (abo) { 663 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo); 664 if (!bo_va) { 665 r = -ENOENT; 666 goto error_backoff; 667 } 668 } else if (args->operation != AMDGPU_VA_OP_CLEAR) { 669 bo_va = fpriv->prt_va; 670 } else { 671 bo_va = NULL; 672 } 673 674 switch (args->operation) { 675 case AMDGPU_VA_OP_MAP: 676 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 677 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address, 678 args->offset_in_bo, args->map_size, 679 va_flags); 680 break; 681 case AMDGPU_VA_OP_UNMAP: 682 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address); 683 break; 684 685 case AMDGPU_VA_OP_CLEAR: 686 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm, 687 args->va_address, 688 args->map_size); 689 break; 690 case AMDGPU_VA_OP_REPLACE: 691 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 692 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address, 693 args->offset_in_bo, args->map_size, 694 va_flags); 695 break; 696 default: 697 break; 698 } 699 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug) 700 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, 701 args->operation); 702 703 error_backoff: 704 ttm_eu_backoff_reservation(&ticket, &list); 705 706 error_unref: 707 drm_gem_object_put_unlocked(gobj); 708 return r; 709 } 710 711 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data, 712 struct drm_file *filp) 713 { 714 struct amdgpu_device *adev = dev->dev_private; 715 struct drm_amdgpu_gem_op *args = data; 716 struct drm_gem_object *gobj; 717 struct amdgpu_vm_bo_base *base; 718 struct amdgpu_bo *robj; 719 int r; 720 721 gobj = drm_gem_object_lookup(filp, args->handle); 722 if (gobj == NULL) { 723 return -ENOENT; 724 } 725 robj = gem_to_amdgpu_bo(gobj); 726 727 r = amdgpu_bo_reserve(robj, false); 728 if (unlikely(r)) 729 goto out; 730 731 switch (args->op) { 732 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: { 733 struct drm_amdgpu_gem_create_in info; 734 void __user *out = u64_to_user_ptr(args->value); 735 736 info.bo_size = robj->tbo.base.size; 737 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT; 738 info.domains = robj->preferred_domains; 739 info.domain_flags = robj->flags; 740 amdgpu_bo_unreserve(robj); 741 if (copy_to_user(out, &info, sizeof(info))) 742 r = -EFAULT; 743 break; 744 } 745 case AMDGPU_GEM_OP_SET_PLACEMENT: 746 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) { 747 r = -EINVAL; 748 amdgpu_bo_unreserve(robj); 749 break; 750 } 751 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) { 752 r = -EPERM; 753 amdgpu_bo_unreserve(robj); 754 break; 755 } 756 for (base = robj->vm_bo; base; base = base->next) 757 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev), 758 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) { 759 r = -EINVAL; 760 amdgpu_bo_unreserve(robj); 761 goto out; 762 } 763 764 765 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM | 766 AMDGPU_GEM_DOMAIN_GTT | 767 AMDGPU_GEM_DOMAIN_CPU); 768 robj->allowed_domains = robj->preferred_domains; 769 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM) 770 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT; 771 772 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 773 amdgpu_vm_bo_invalidate(adev, robj, true); 774 775 amdgpu_bo_unreserve(robj); 776 break; 777 default: 778 amdgpu_bo_unreserve(robj); 779 r = -EINVAL; 780 } 781 782 out: 783 drm_gem_object_put_unlocked(gobj); 784 return r; 785 } 786 787 int amdgpu_mode_dumb_create(struct drm_file *file_priv, 788 struct drm_device *dev, 789 struct drm_mode_create_dumb *args) 790 { 791 struct amdgpu_device *adev = dev->dev_private; 792 struct drm_gem_object *gobj; 793 uint32_t handle; 794 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 795 AMDGPU_GEM_CREATE_CPU_GTT_USWC; 796 u32 domain; 797 int r; 798 799 /* 800 * The buffer returned from this function should be cleared, but 801 * it can only be done if the ring is enabled or we'll fail to 802 * create the buffer. 803 */ 804 if (adev->mman.buffer_funcs_enabled) 805 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; 806 807 args->pitch = amdgpu_align_pitch(adev, args->width, 808 DIV_ROUND_UP(args->bpp, 8), 0); 809 args->size = (u64)args->pitch * args->height; 810 args->size = ALIGN(args->size, PAGE_SIZE); 811 domain = amdgpu_bo_get_preferred_pin_domain(adev, 812 amdgpu_display_supported_domains(adev, flags)); 813 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags, 814 ttm_bo_type_device, NULL, &gobj); 815 if (r) 816 return -ENOMEM; 817 818 r = drm_gem_handle_create(file_priv, gobj, &handle); 819 /* drop reference from allocate - handle holds it now */ 820 drm_gem_object_put_unlocked(gobj); 821 if (r) { 822 return r; 823 } 824 args->handle = handle; 825 return 0; 826 } 827 828 #if defined(CONFIG_DEBUG_FS) 829 830 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag) \ 831 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \ 832 seq_printf((m), " " #flag); \ 833 } 834 835 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data) 836 { 837 struct drm_gem_object *gobj = ptr; 838 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); 839 struct seq_file *m = data; 840 841 struct dma_buf_attachment *attachment; 842 struct dma_buf *dma_buf; 843 unsigned domain; 844 const char *placement; 845 unsigned pin_count; 846 847 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); 848 switch (domain) { 849 case AMDGPU_GEM_DOMAIN_VRAM: 850 placement = "VRAM"; 851 break; 852 case AMDGPU_GEM_DOMAIN_GTT: 853 placement = " GTT"; 854 break; 855 case AMDGPU_GEM_DOMAIN_CPU: 856 default: 857 placement = " CPU"; 858 break; 859 } 860 seq_printf(m, "\t0x%08x: %12ld byte %s", 861 id, amdgpu_bo_size(bo), placement); 862 863 pin_count = READ_ONCE(bo->pin_count); 864 if (pin_count) 865 seq_printf(m, " pin count %d", pin_count); 866 867 dma_buf = READ_ONCE(bo->tbo.base.dma_buf); 868 attachment = READ_ONCE(bo->tbo.base.import_attach); 869 870 if (attachment) 871 seq_printf(m, " imported from %p%s", dma_buf, 872 attachment->peer2peer ? " P2P" : ""); 873 else if (dma_buf) 874 seq_printf(m, " exported as %p", dma_buf); 875 876 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED); 877 amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS); 878 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC); 879 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED); 880 amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW); 881 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS); 882 amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID); 883 amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC); 884 885 seq_printf(m, "\n"); 886 887 return 0; 888 } 889 890 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) 891 { 892 struct drm_info_node *node = (struct drm_info_node *)m->private; 893 struct drm_device *dev = node->minor->dev; 894 struct drm_file *file; 895 int r; 896 897 r = mutex_lock_interruptible(&dev->filelist_mutex); 898 if (r) 899 return r; 900 901 list_for_each_entry(file, &dev->filelist, lhead) { 902 struct task_struct *task; 903 904 /* 905 * Although we have a valid reference on file->pid, that does 906 * not guarantee that the task_struct who called get_pid() is 907 * still alive (e.g. get_pid(current) => fork() => exit()). 908 * Therefore, we need to protect this ->comm access using RCU. 909 */ 910 rcu_read_lock(); 911 task = pid_task(file->pid, PIDTYPE_PID); 912 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid), 913 task ? task->comm : "<unknown>"); 914 rcu_read_unlock(); 915 916 spin_lock(&file->table_lock); 917 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m); 918 spin_unlock(&file->table_lock); 919 } 920 921 mutex_unlock(&dev->filelist_mutex); 922 return 0; 923 } 924 925 static const struct drm_info_list amdgpu_debugfs_gem_list[] = { 926 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL}, 927 }; 928 #endif 929 930 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev) 931 { 932 #if defined(CONFIG_DEBUG_FS) 933 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1); 934 #endif 935 return 0; 936 } 937