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