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_drv.h> 36 #include <drm/drm_exec.h> 37 #include <drm/drm_gem_ttm_helper.h> 38 #include <drm/ttm/ttm_tt.h> 39 40 #include "amdgpu.h" 41 #include "amdgpu_display.h" 42 #include "amdgpu_dma_buf.h" 43 #include "amdgpu_hmm.h" 44 #include "amdgpu_xgmi.h" 45 46 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs; 47 48 static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf) 49 { 50 struct ttm_buffer_object *bo = vmf->vma->vm_private_data; 51 struct drm_device *ddev = bo->base.dev; 52 vm_fault_t ret; 53 int idx; 54 55 ret = ttm_bo_vm_reserve(bo, vmf); 56 if (ret) 57 return ret; 58 59 if (drm_dev_enter(ddev, &idx)) { 60 ret = amdgpu_bo_fault_reserve_notify(bo); 61 if (ret) { 62 drm_dev_exit(idx); 63 goto unlock; 64 } 65 66 ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, 67 TTM_BO_VM_NUM_PREFAULT); 68 69 drm_dev_exit(idx); 70 } else { 71 ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot); 72 } 73 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) 74 return ret; 75 76 unlock: 77 dma_resv_unlock(bo->base.resv); 78 return ret; 79 } 80 81 static const struct vm_operations_struct amdgpu_gem_vm_ops = { 82 .fault = amdgpu_gem_fault, 83 .open = ttm_bo_vm_open, 84 .close = ttm_bo_vm_close, 85 .access = ttm_bo_vm_access 86 }; 87 88 static void amdgpu_gem_object_free(struct drm_gem_object *gobj) 89 { 90 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); 91 92 if (robj) { 93 amdgpu_hmm_unregister(robj); 94 amdgpu_bo_unref(&robj); 95 } 96 } 97 98 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, 99 int alignment, u32 initial_domain, 100 u64 flags, enum ttm_bo_type type, 101 struct dma_resv *resv, 102 struct drm_gem_object **obj, int8_t xcp_id_plus1) 103 { 104 struct amdgpu_bo *bo; 105 struct amdgpu_bo_user *ubo; 106 struct amdgpu_bo_param bp; 107 int r; 108 109 memset(&bp, 0, sizeof(bp)); 110 *obj = NULL; 111 flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE; 112 113 bp.size = size; 114 bp.byte_align = alignment; 115 bp.type = type; 116 bp.resv = resv; 117 bp.preferred_domain = initial_domain; 118 bp.flags = flags; 119 bp.domain = initial_domain; 120 bp.bo_ptr_size = sizeof(struct amdgpu_bo); 121 bp.xcp_id_plus1 = xcp_id_plus1; 122 123 r = amdgpu_bo_create_user(adev, &bp, &ubo); 124 if (r) 125 return r; 126 127 bo = &ubo->bo; 128 *obj = &bo->tbo.base; 129 (*obj)->funcs = &amdgpu_gem_object_funcs; 130 131 return 0; 132 } 133 134 void amdgpu_gem_force_release(struct amdgpu_device *adev) 135 { 136 struct drm_device *ddev = adev_to_drm(adev); 137 struct drm_file *file; 138 139 mutex_lock(&ddev->filelist_mutex); 140 141 list_for_each_entry(file, &ddev->filelist, lhead) { 142 struct drm_gem_object *gobj; 143 int handle; 144 145 WARN_ONCE(1, "Still active user space clients!\n"); 146 spin_lock(&file->table_lock); 147 idr_for_each_entry(&file->object_idr, gobj, handle) { 148 WARN_ONCE(1, "And also active allocations!\n"); 149 drm_gem_object_put(gobj); 150 } 151 idr_destroy(&file->object_idr); 152 spin_unlock(&file->table_lock); 153 } 154 155 mutex_unlock(&ddev->filelist_mutex); 156 } 157 158 /* 159 * Call from drm_gem_handle_create which appear in both new and open ioctl 160 * case. 161 */ 162 static int amdgpu_gem_object_open(struct drm_gem_object *obj, 163 struct drm_file *file_priv) 164 { 165 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj); 166 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev); 167 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 168 struct amdgpu_vm *vm = &fpriv->vm; 169 struct amdgpu_bo_va *bo_va; 170 struct mm_struct *mm; 171 int r; 172 173 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm); 174 if (mm && mm != current->mm) 175 return -EPERM; 176 177 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID && 178 !amdgpu_vm_is_bo_always_valid(vm, abo)) 179 return -EPERM; 180 181 r = amdgpu_bo_reserve(abo, false); 182 if (r) 183 return r; 184 185 bo_va = amdgpu_vm_bo_find(vm, abo); 186 if (!bo_va) 187 bo_va = amdgpu_vm_bo_add(adev, vm, abo); 188 else 189 ++bo_va->ref_count; 190 amdgpu_bo_unreserve(abo); 191 192 /* Validate and add eviction fence to DMABuf imports with dynamic 193 * attachment in compute VMs. Re-validation will be done by 194 * amdgpu_vm_validate. Fences are on the reservation shared with the 195 * export, which is currently required to be validated and fenced 196 * already by amdgpu_amdkfd_gpuvm_restore_process_bos. 197 * 198 * Nested locking below for the case that a GEM object is opened in 199 * kfd_mem_export_dmabuf. Since the lock below is only taken for imports, 200 * but not for export, this is a different lock class that cannot lead to 201 * circular lock dependencies. 202 */ 203 if (!vm->is_compute_context || !vm->process_info) 204 return 0; 205 if (!obj->import_attach || 206 !dma_buf_is_dynamic(obj->import_attach->dmabuf)) 207 return 0; 208 mutex_lock_nested(&vm->process_info->lock, 1); 209 if (!WARN_ON(!vm->process_info->eviction_fence)) { 210 r = amdgpu_amdkfd_bo_validate_and_fence(abo, AMDGPU_GEM_DOMAIN_GTT, 211 &vm->process_info->eviction_fence->base); 212 if (r) { 213 struct amdgpu_task_info *ti = amdgpu_vm_get_task_info_vm(vm); 214 215 dev_warn(adev->dev, "validate_and_fence failed: %d\n", r); 216 if (ti) { 217 dev_warn(adev->dev, "pid %d\n", ti->pid); 218 amdgpu_vm_put_task_info(ti); 219 } 220 } 221 } 222 mutex_unlock(&vm->process_info->lock); 223 224 return r; 225 } 226 227 static void amdgpu_gem_object_close(struct drm_gem_object *obj, 228 struct drm_file *file_priv) 229 { 230 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); 231 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); 232 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 233 struct amdgpu_vm *vm = &fpriv->vm; 234 235 struct dma_fence *fence = NULL; 236 struct amdgpu_bo_va *bo_va; 237 struct drm_exec exec; 238 long r; 239 240 drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES, 0); 241 drm_exec_until_all_locked(&exec) { 242 r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 1); 243 drm_exec_retry_on_contention(&exec); 244 if (unlikely(r)) 245 goto out_unlock; 246 247 r = amdgpu_vm_lock_pd(vm, &exec, 0); 248 drm_exec_retry_on_contention(&exec); 249 if (unlikely(r)) 250 goto out_unlock; 251 } 252 253 bo_va = amdgpu_vm_bo_find(vm, bo); 254 if (!bo_va || --bo_va->ref_count) 255 goto out_unlock; 256 257 amdgpu_vm_bo_del(adev, bo_va); 258 if (!amdgpu_vm_ready(vm)) 259 goto out_unlock; 260 261 r = amdgpu_vm_clear_freed(adev, vm, &fence); 262 if (unlikely(r < 0)) 263 dev_err(adev->dev, "failed to clear page " 264 "tables on GEM object close (%ld)\n", r); 265 if (r || !fence) 266 goto out_unlock; 267 268 amdgpu_bo_fence(bo, fence, true); 269 dma_fence_put(fence); 270 271 out_unlock: 272 if (r) 273 dev_err(adev->dev, "leaking bo va (%ld)\n", r); 274 drm_exec_fini(&exec); 275 } 276 277 static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 278 { 279 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); 280 281 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) 282 return -EPERM; 283 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) 284 return -EPERM; 285 286 /* Workaround for Thunk bug creating PROT_NONE,MAP_PRIVATE mappings 287 * for debugger access to invisible VRAM. Should have used MAP_SHARED 288 * instead. Clearing VM_MAYWRITE prevents the mapping from ever 289 * becoming writable and makes is_cow_mapping(vm_flags) false. 290 */ 291 if (is_cow_mapping(vma->vm_flags) && 292 !(vma->vm_flags & VM_ACCESS_FLAGS)) 293 vm_flags_clear(vma, VM_MAYWRITE); 294 295 return drm_gem_ttm_mmap(obj, vma); 296 } 297 298 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = { 299 .free = amdgpu_gem_object_free, 300 .open = amdgpu_gem_object_open, 301 .close = amdgpu_gem_object_close, 302 .export = amdgpu_gem_prime_export, 303 .vmap = drm_gem_ttm_vmap, 304 .vunmap = drm_gem_ttm_vunmap, 305 .mmap = amdgpu_gem_object_mmap, 306 .vm_ops = &amdgpu_gem_vm_ops, 307 }; 308 309 /* 310 * GEM ioctls. 311 */ 312 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, 313 struct drm_file *filp) 314 { 315 struct amdgpu_device *adev = drm_to_adev(dev); 316 struct amdgpu_fpriv *fpriv = filp->driver_priv; 317 struct amdgpu_vm *vm = &fpriv->vm; 318 union drm_amdgpu_gem_create *args = data; 319 uint64_t flags = args->in.domain_flags; 320 uint64_t size = args->in.bo_size; 321 struct dma_resv *resv = NULL; 322 struct drm_gem_object *gobj; 323 uint32_t handle, initial_domain; 324 int r; 325 326 /* reject DOORBELLs until userspace code to use it is available */ 327 if (args->in.domains & AMDGPU_GEM_DOMAIN_DOORBELL) 328 return -EINVAL; 329 330 /* reject invalid gem flags */ 331 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 332 AMDGPU_GEM_CREATE_NO_CPU_ACCESS | 333 AMDGPU_GEM_CREATE_CPU_GTT_USWC | 334 AMDGPU_GEM_CREATE_VRAM_CLEARED | 335 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID | 336 AMDGPU_GEM_CREATE_EXPLICIT_SYNC | 337 AMDGPU_GEM_CREATE_ENCRYPTED | 338 AMDGPU_GEM_CREATE_GFX12_DCC | 339 AMDGPU_GEM_CREATE_DISCARDABLE)) 340 return -EINVAL; 341 342 /* reject invalid gem domains */ 343 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK) 344 return -EINVAL; 345 346 if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) { 347 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n"); 348 return -EINVAL; 349 } 350 351 /* always clear VRAM */ 352 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; 353 354 /* create a gem object to contain this object in */ 355 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | 356 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { 357 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 358 /* if gds bo is created from user space, it must be 359 * passed to bo list 360 */ 361 DRM_ERROR("GDS bo cannot be per-vm-bo\n"); 362 return -EINVAL; 363 } 364 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS; 365 } 366 367 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 368 r = amdgpu_bo_reserve(vm->root.bo, false); 369 if (r) 370 return r; 371 372 resv = vm->root.bo->tbo.base.resv; 373 } 374 375 initial_domain = (u32)(0xffffffff & args->in.domains); 376 retry: 377 r = amdgpu_gem_object_create(adev, size, args->in.alignment, 378 initial_domain, 379 flags, ttm_bo_type_device, resv, &gobj, fpriv->xcp_id + 1); 380 if (r && r != -ERESTARTSYS) { 381 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) { 382 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; 383 goto retry; 384 } 385 386 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { 387 initial_domain |= AMDGPU_GEM_DOMAIN_GTT; 388 goto retry; 389 } 390 DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n", 391 size, initial_domain, args->in.alignment, r); 392 } 393 394 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 395 if (!r) { 396 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); 397 398 abo->parent = amdgpu_bo_ref(vm->root.bo); 399 } 400 amdgpu_bo_unreserve(vm->root.bo); 401 } 402 if (r) 403 return r; 404 405 r = drm_gem_handle_create(filp, gobj, &handle); 406 /* drop reference from allocate - handle holds it now */ 407 drm_gem_object_put(gobj); 408 if (r) 409 return r; 410 411 memset(args, 0, sizeof(*args)); 412 args->out.handle = handle; 413 return 0; 414 } 415 416 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, 417 struct drm_file *filp) 418 { 419 struct ttm_operation_ctx ctx = { true, false }; 420 struct amdgpu_device *adev = drm_to_adev(dev); 421 struct drm_amdgpu_gem_userptr *args = data; 422 struct amdgpu_fpriv *fpriv = filp->driver_priv; 423 struct drm_gem_object *gobj; 424 struct hmm_range *range; 425 struct amdgpu_bo *bo; 426 uint32_t handle; 427 int r; 428 429 args->addr = untagged_addr(args->addr); 430 431 if (offset_in_page(args->addr | args->size)) 432 return -EINVAL; 433 434 /* reject unknown flag values */ 435 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | 436 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | 437 AMDGPU_GEM_USERPTR_REGISTER)) 438 return -EINVAL; 439 440 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && 441 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { 442 443 /* if we want to write to it we must install a MMU notifier */ 444 return -EACCES; 445 } 446 447 /* create a gem object to contain this object in */ 448 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 449 0, ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1); 450 if (r) 451 return r; 452 453 bo = gem_to_amdgpu_bo(gobj); 454 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; 455 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; 456 r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags); 457 if (r) 458 goto release_object; 459 460 r = amdgpu_hmm_register(bo, args->addr); 461 if (r) 462 goto release_object; 463 464 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { 465 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages, 466 &range); 467 if (r) 468 goto release_object; 469 470 r = amdgpu_bo_reserve(bo, true); 471 if (r) 472 goto user_pages_done; 473 474 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); 475 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 476 amdgpu_bo_unreserve(bo); 477 if (r) 478 goto user_pages_done; 479 } 480 481 r = drm_gem_handle_create(filp, gobj, &handle); 482 if (r) 483 goto user_pages_done; 484 485 args->handle = handle; 486 487 user_pages_done: 488 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) 489 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm, range); 490 491 release_object: 492 drm_gem_object_put(gobj); 493 494 return r; 495 } 496 497 int amdgpu_mode_dumb_mmap(struct drm_file *filp, 498 struct drm_device *dev, 499 uint32_t handle, uint64_t *offset_p) 500 { 501 struct drm_gem_object *gobj; 502 struct amdgpu_bo *robj; 503 504 gobj = drm_gem_object_lookup(filp, handle); 505 if (!gobj) 506 return -ENOENT; 507 508 robj = gem_to_amdgpu_bo(gobj); 509 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) || 510 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { 511 drm_gem_object_put(gobj); 512 return -EPERM; 513 } 514 *offset_p = amdgpu_bo_mmap_offset(robj); 515 drm_gem_object_put(gobj); 516 return 0; 517 } 518 519 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, 520 struct drm_file *filp) 521 { 522 union drm_amdgpu_gem_mmap *args = data; 523 uint32_t handle = args->in.handle; 524 525 memset(args, 0, sizeof(*args)); 526 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr); 527 } 528 529 /** 530 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value 531 * 532 * @timeout_ns: timeout in ns 533 * 534 * Calculate the timeout in jiffies from an absolute timeout in ns. 535 */ 536 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns) 537 { 538 unsigned long timeout_jiffies; 539 ktime_t timeout; 540 541 /* clamp timeout if it's to large */ 542 if (((int64_t)timeout_ns) < 0) 543 return MAX_SCHEDULE_TIMEOUT; 544 545 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); 546 if (ktime_to_ns(timeout) < 0) 547 return 0; 548 549 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); 550 /* clamp timeout to avoid unsigned-> signed overflow */ 551 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT) 552 return MAX_SCHEDULE_TIMEOUT - 1; 553 554 return timeout_jiffies; 555 } 556 557 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, 558 struct drm_file *filp) 559 { 560 union drm_amdgpu_gem_wait_idle *args = data; 561 struct drm_gem_object *gobj; 562 struct amdgpu_bo *robj; 563 uint32_t handle = args->in.handle; 564 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); 565 int r = 0; 566 long ret; 567 568 gobj = drm_gem_object_lookup(filp, handle); 569 if (!gobj) 570 return -ENOENT; 571 572 robj = gem_to_amdgpu_bo(gobj); 573 ret = dma_resv_wait_timeout(robj->tbo.base.resv, DMA_RESV_USAGE_READ, 574 true, timeout); 575 576 /* ret == 0 means not signaled, 577 * ret > 0 means signaled 578 * ret < 0 means interrupted before timeout 579 */ 580 if (ret >= 0) { 581 memset(args, 0, sizeof(*args)); 582 args->out.status = (ret == 0); 583 } else 584 r = ret; 585 586 drm_gem_object_put(gobj); 587 return r; 588 } 589 590 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, 591 struct drm_file *filp) 592 { 593 struct drm_amdgpu_gem_metadata *args = data; 594 struct drm_gem_object *gobj; 595 struct amdgpu_bo *robj; 596 int r = -1; 597 598 DRM_DEBUG("%d\n", args->handle); 599 gobj = drm_gem_object_lookup(filp, args->handle); 600 if (gobj == NULL) 601 return -ENOENT; 602 robj = gem_to_amdgpu_bo(gobj); 603 604 r = amdgpu_bo_reserve(robj, false); 605 if (unlikely(r != 0)) 606 goto out; 607 608 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { 609 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); 610 r = amdgpu_bo_get_metadata(robj, args->data.data, 611 sizeof(args->data.data), 612 &args->data.data_size_bytes, 613 &args->data.flags); 614 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { 615 if (args->data.data_size_bytes > sizeof(args->data.data)) { 616 r = -EINVAL; 617 goto unreserve; 618 } 619 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); 620 if (!r) 621 r = amdgpu_bo_set_metadata(robj, args->data.data, 622 args->data.data_size_bytes, 623 args->data.flags); 624 } 625 626 unreserve: 627 amdgpu_bo_unreserve(robj); 628 out: 629 drm_gem_object_put(gobj); 630 return r; 631 } 632 633 /** 634 * amdgpu_gem_va_update_vm -update the bo_va in its VM 635 * 636 * @adev: amdgpu_device pointer 637 * @vm: vm to update 638 * @bo_va: bo_va to update 639 * @operation: map, unmap or clear 640 * 641 * Update the bo_va directly after setting its address. Errors are not 642 * vital here, so they are not reported back to userspace. 643 */ 644 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, 645 struct amdgpu_vm *vm, 646 struct amdgpu_bo_va *bo_va, 647 uint32_t operation) 648 { 649 int r; 650 651 if (!amdgpu_vm_ready(vm)) 652 return; 653 654 r = amdgpu_vm_clear_freed(adev, vm, NULL); 655 if (r) 656 goto error; 657 658 if (operation == AMDGPU_VA_OP_MAP || 659 operation == AMDGPU_VA_OP_REPLACE) { 660 r = amdgpu_vm_bo_update(adev, bo_va, false); 661 if (r) 662 goto error; 663 } 664 665 r = amdgpu_vm_update_pdes(adev, vm, false); 666 667 error: 668 if (r && r != -ERESTARTSYS) 669 DRM_ERROR("Couldn't update BO_VA (%d)\n", r); 670 } 671 672 /** 673 * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags 674 * 675 * @adev: amdgpu_device pointer 676 * @flags: GEM UAPI flags 677 * 678 * Returns the GEM UAPI flags mapped into hardware for the ASIC. 679 */ 680 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags) 681 { 682 uint64_t pte_flag = 0; 683 684 if (flags & AMDGPU_VM_PAGE_EXECUTABLE) 685 pte_flag |= AMDGPU_PTE_EXECUTABLE; 686 if (flags & AMDGPU_VM_PAGE_READABLE) 687 pte_flag |= AMDGPU_PTE_READABLE; 688 if (flags & AMDGPU_VM_PAGE_WRITEABLE) 689 pte_flag |= AMDGPU_PTE_WRITEABLE; 690 if (flags & AMDGPU_VM_PAGE_PRT) 691 pte_flag |= AMDGPU_PTE_PRT_FLAG(adev); 692 if (flags & AMDGPU_VM_PAGE_NOALLOC) 693 pte_flag |= AMDGPU_PTE_NOALLOC; 694 695 if (adev->gmc.gmc_funcs->map_mtype) 696 pte_flag |= amdgpu_gmc_map_mtype(adev, 697 flags & AMDGPU_VM_MTYPE_MASK); 698 699 return pte_flag; 700 } 701 702 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, 703 struct drm_file *filp) 704 { 705 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE | 706 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE | 707 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK | 708 AMDGPU_VM_PAGE_NOALLOC; 709 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE | 710 AMDGPU_VM_PAGE_PRT; 711 712 struct drm_amdgpu_gem_va *args = data; 713 struct drm_gem_object *gobj; 714 struct amdgpu_device *adev = drm_to_adev(dev); 715 struct amdgpu_fpriv *fpriv = filp->driver_priv; 716 struct amdgpu_bo *abo; 717 struct amdgpu_bo_va *bo_va; 718 struct drm_exec exec; 719 uint64_t va_flags; 720 uint64_t vm_size; 721 int r = 0; 722 723 if (args->va_address < AMDGPU_VA_RESERVED_BOTTOM) { 724 dev_dbg(dev->dev, 725 "va_address 0x%llx is in reserved area 0x%llx\n", 726 args->va_address, AMDGPU_VA_RESERVED_BOTTOM); 727 return -EINVAL; 728 } 729 730 if (args->va_address >= AMDGPU_GMC_HOLE_START && 731 args->va_address < AMDGPU_GMC_HOLE_END) { 732 dev_dbg(dev->dev, 733 "va_address 0x%llx is in VA hole 0x%llx-0x%llx\n", 734 args->va_address, AMDGPU_GMC_HOLE_START, 735 AMDGPU_GMC_HOLE_END); 736 return -EINVAL; 737 } 738 739 args->va_address &= AMDGPU_GMC_HOLE_MASK; 740 741 vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE; 742 vm_size -= AMDGPU_VA_RESERVED_TOP; 743 if (args->va_address + args->map_size > vm_size) { 744 dev_dbg(dev->dev, 745 "va_address 0x%llx is in top reserved area 0x%llx\n", 746 args->va_address + args->map_size, vm_size); 747 return -EINVAL; 748 } 749 750 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) { 751 dev_dbg(dev->dev, "invalid flags combination 0x%08X\n", 752 args->flags); 753 return -EINVAL; 754 } 755 756 switch (args->operation) { 757 case AMDGPU_VA_OP_MAP: 758 case AMDGPU_VA_OP_UNMAP: 759 case AMDGPU_VA_OP_CLEAR: 760 case AMDGPU_VA_OP_REPLACE: 761 break; 762 default: 763 dev_dbg(dev->dev, "unsupported operation %d\n", 764 args->operation); 765 return -EINVAL; 766 } 767 768 if ((args->operation != AMDGPU_VA_OP_CLEAR) && 769 !(args->flags & AMDGPU_VM_PAGE_PRT)) { 770 gobj = drm_gem_object_lookup(filp, args->handle); 771 if (gobj == NULL) 772 return -ENOENT; 773 abo = gem_to_amdgpu_bo(gobj); 774 } else { 775 gobj = NULL; 776 abo = NULL; 777 } 778 779 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT | 780 DRM_EXEC_IGNORE_DUPLICATES, 0); 781 drm_exec_until_all_locked(&exec) { 782 if (gobj) { 783 r = drm_exec_lock_obj(&exec, gobj); 784 drm_exec_retry_on_contention(&exec); 785 if (unlikely(r)) 786 goto error; 787 } 788 789 r = amdgpu_vm_lock_pd(&fpriv->vm, &exec, 2); 790 drm_exec_retry_on_contention(&exec); 791 if (unlikely(r)) 792 goto error; 793 } 794 795 if (abo) { 796 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo); 797 if (!bo_va) { 798 r = -ENOENT; 799 goto error; 800 } 801 } else if (args->operation != AMDGPU_VA_OP_CLEAR) { 802 bo_va = fpriv->prt_va; 803 } else { 804 bo_va = NULL; 805 } 806 807 switch (args->operation) { 808 case AMDGPU_VA_OP_MAP: 809 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 810 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address, 811 args->offset_in_bo, args->map_size, 812 va_flags); 813 break; 814 case AMDGPU_VA_OP_UNMAP: 815 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address); 816 break; 817 818 case AMDGPU_VA_OP_CLEAR: 819 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm, 820 args->va_address, 821 args->map_size); 822 break; 823 case AMDGPU_VA_OP_REPLACE: 824 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 825 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address, 826 args->offset_in_bo, args->map_size, 827 va_flags); 828 break; 829 default: 830 break; 831 } 832 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !adev->debug_vm) 833 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, 834 args->operation); 835 836 error: 837 drm_exec_fini(&exec); 838 drm_gem_object_put(gobj); 839 return r; 840 } 841 842 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data, 843 struct drm_file *filp) 844 { 845 struct amdgpu_device *adev = drm_to_adev(dev); 846 struct drm_amdgpu_gem_op *args = data; 847 struct drm_gem_object *gobj; 848 struct amdgpu_vm_bo_base *base; 849 struct amdgpu_bo *robj; 850 int r; 851 852 gobj = drm_gem_object_lookup(filp, args->handle); 853 if (!gobj) 854 return -ENOENT; 855 856 robj = gem_to_amdgpu_bo(gobj); 857 858 r = amdgpu_bo_reserve(robj, false); 859 if (unlikely(r)) 860 goto out; 861 862 switch (args->op) { 863 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: { 864 struct drm_amdgpu_gem_create_in info; 865 void __user *out = u64_to_user_ptr(args->value); 866 867 info.bo_size = robj->tbo.base.size; 868 info.alignment = robj->tbo.page_alignment << PAGE_SHIFT; 869 info.domains = robj->preferred_domains; 870 info.domain_flags = robj->flags; 871 amdgpu_bo_unreserve(robj); 872 if (copy_to_user(out, &info, sizeof(info))) 873 r = -EFAULT; 874 break; 875 } 876 case AMDGPU_GEM_OP_SET_PLACEMENT: 877 if (robj->tbo.base.import_attach && 878 args->value & AMDGPU_GEM_DOMAIN_VRAM) { 879 r = -EINVAL; 880 amdgpu_bo_unreserve(robj); 881 break; 882 } 883 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) { 884 r = -EPERM; 885 amdgpu_bo_unreserve(robj); 886 break; 887 } 888 for (base = robj->vm_bo; base; base = base->next) 889 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev), 890 amdgpu_ttm_adev(base->vm->root.bo->tbo.bdev))) { 891 r = -EINVAL; 892 amdgpu_bo_unreserve(robj); 893 goto out; 894 } 895 896 897 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM | 898 AMDGPU_GEM_DOMAIN_GTT | 899 AMDGPU_GEM_DOMAIN_CPU); 900 robj->allowed_domains = robj->preferred_domains; 901 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM) 902 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT; 903 904 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 905 amdgpu_vm_bo_invalidate(adev, robj, true); 906 907 amdgpu_bo_unreserve(robj); 908 break; 909 default: 910 amdgpu_bo_unreserve(robj); 911 r = -EINVAL; 912 } 913 914 out: 915 drm_gem_object_put(gobj); 916 return r; 917 } 918 919 static int amdgpu_gem_align_pitch(struct amdgpu_device *adev, 920 int width, 921 int cpp, 922 bool tiled) 923 { 924 int aligned = width; 925 int pitch_mask = 0; 926 927 switch (cpp) { 928 case 1: 929 pitch_mask = 255; 930 break; 931 case 2: 932 pitch_mask = 127; 933 break; 934 case 3: 935 case 4: 936 pitch_mask = 63; 937 break; 938 } 939 940 aligned += pitch_mask; 941 aligned &= ~pitch_mask; 942 return aligned * cpp; 943 } 944 945 int amdgpu_mode_dumb_create(struct drm_file *file_priv, 946 struct drm_device *dev, 947 struct drm_mode_create_dumb *args) 948 { 949 struct amdgpu_device *adev = drm_to_adev(dev); 950 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 951 struct drm_gem_object *gobj; 952 uint32_t handle; 953 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 954 AMDGPU_GEM_CREATE_CPU_GTT_USWC | 955 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS; 956 u32 domain; 957 int r; 958 959 /* 960 * The buffer returned from this function should be cleared, but 961 * it can only be done if the ring is enabled or we'll fail to 962 * create the buffer. 963 */ 964 if (adev->mman.buffer_funcs_enabled) 965 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; 966 967 args->pitch = amdgpu_gem_align_pitch(adev, args->width, 968 DIV_ROUND_UP(args->bpp, 8), 0); 969 args->size = (u64)args->pitch * args->height; 970 args->size = ALIGN(args->size, PAGE_SIZE); 971 domain = amdgpu_bo_get_preferred_domain(adev, 972 amdgpu_display_supported_domains(adev, flags)); 973 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags, 974 ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1); 975 if (r) 976 return -ENOMEM; 977 978 r = drm_gem_handle_create(file_priv, gobj, &handle); 979 /* drop reference from allocate - handle holds it now */ 980 drm_gem_object_put(gobj); 981 if (r) 982 return r; 983 984 args->handle = handle; 985 return 0; 986 } 987 988 #if defined(CONFIG_DEBUG_FS) 989 static int amdgpu_debugfs_gem_info_show(struct seq_file *m, void *unused) 990 { 991 struct amdgpu_device *adev = m->private; 992 struct drm_device *dev = adev_to_drm(adev); 993 struct drm_file *file; 994 int r; 995 996 r = mutex_lock_interruptible(&dev->filelist_mutex); 997 if (r) 998 return r; 999 1000 list_for_each_entry(file, &dev->filelist, lhead) { 1001 struct task_struct *task; 1002 struct drm_gem_object *gobj; 1003 struct pid *pid; 1004 int id; 1005 1006 /* 1007 * Although we have a valid reference on file->pid, that does 1008 * not guarantee that the task_struct who called get_pid() is 1009 * still alive (e.g. get_pid(current) => fork() => exit()). 1010 * Therefore, we need to protect this ->comm access using RCU. 1011 */ 1012 rcu_read_lock(); 1013 pid = rcu_dereference(file->pid); 1014 task = pid_task(pid, PIDTYPE_TGID); 1015 seq_printf(m, "pid %8d command %s:\n", pid_nr(pid), 1016 task ? task->comm : "<unknown>"); 1017 rcu_read_unlock(); 1018 1019 spin_lock(&file->table_lock); 1020 idr_for_each_entry(&file->object_idr, gobj, id) { 1021 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); 1022 1023 amdgpu_bo_print_info(id, bo, m); 1024 } 1025 spin_unlock(&file->table_lock); 1026 } 1027 1028 mutex_unlock(&dev->filelist_mutex); 1029 return 0; 1030 } 1031 1032 DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_gem_info); 1033 1034 #endif 1035 1036 void amdgpu_debugfs_gem_init(struct amdgpu_device *adev) 1037 { 1038 #if defined(CONFIG_DEBUG_FS) 1039 struct drm_minor *minor = adev_to_drm(adev)->primary; 1040 struct dentry *root = minor->debugfs_root; 1041 1042 debugfs_create_file("amdgpu_gem_info", 0444, root, adev, 1043 &amdgpu_debugfs_gem_info_fops); 1044 #endif 1045 } 1046