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_dma_buf.h" 40 #include "amdgpu_xgmi.h" 41 42 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs; 43 44 static void amdgpu_gem_object_free(struct drm_gem_object *gobj) 45 { 46 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); 47 48 if (robj) { 49 amdgpu_mn_unregister(robj); 50 amdgpu_bo_unref(&robj); 51 } 52 } 53 54 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, 55 int alignment, u32 initial_domain, 56 u64 flags, enum ttm_bo_type type, 57 struct dma_resv *resv, 58 struct drm_gem_object **obj) 59 { 60 struct amdgpu_bo *bo; 61 struct amdgpu_bo_param bp; 62 int r; 63 64 memset(&bp, 0, sizeof(bp)); 65 *obj = NULL; 66 67 bp.size = size; 68 bp.byte_align = alignment; 69 bp.type = type; 70 bp.resv = resv; 71 bp.preferred_domain = initial_domain; 72 retry: 73 bp.flags = flags; 74 bp.domain = initial_domain; 75 r = amdgpu_bo_create(adev, &bp, &bo); 76 if (r) { 77 if (r != -ERESTARTSYS) { 78 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) { 79 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; 80 goto retry; 81 } 82 83 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { 84 initial_domain |= AMDGPU_GEM_DOMAIN_GTT; 85 goto retry; 86 } 87 DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n", 88 size, initial_domain, alignment, r); 89 } 90 return r; 91 } 92 *obj = &bo->tbo.base; 93 (*obj)->funcs = &amdgpu_gem_object_funcs; 94 95 return 0; 96 } 97 98 void amdgpu_gem_force_release(struct amdgpu_device *adev) 99 { 100 struct drm_device *ddev = adev_to_drm(adev); 101 struct drm_file *file; 102 103 mutex_lock(&ddev->filelist_mutex); 104 105 list_for_each_entry(file, &ddev->filelist, lhead) { 106 struct drm_gem_object *gobj; 107 int handle; 108 109 WARN_ONCE(1, "Still active user space clients!\n"); 110 spin_lock(&file->table_lock); 111 idr_for_each_entry(&file->object_idr, gobj, handle) { 112 WARN_ONCE(1, "And also active allocations!\n"); 113 drm_gem_object_put(gobj); 114 } 115 idr_destroy(&file->object_idr); 116 spin_unlock(&file->table_lock); 117 } 118 119 mutex_unlock(&ddev->filelist_mutex); 120 } 121 122 /* 123 * Call from drm_gem_handle_create which appear in both new and open ioctl 124 * case. 125 */ 126 static int amdgpu_gem_object_open(struct drm_gem_object *obj, 127 struct drm_file *file_priv) 128 { 129 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj); 130 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev); 131 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 132 struct amdgpu_vm *vm = &fpriv->vm; 133 struct amdgpu_bo_va *bo_va; 134 struct mm_struct *mm; 135 int r; 136 137 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm); 138 if (mm && mm != current->mm) 139 return -EPERM; 140 141 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID && 142 abo->tbo.base.resv != vm->root.base.bo->tbo.base.resv) 143 return -EPERM; 144 145 r = amdgpu_bo_reserve(abo, false); 146 if (r) 147 return r; 148 149 bo_va = amdgpu_vm_bo_find(vm, abo); 150 if (!bo_va) { 151 bo_va = amdgpu_vm_bo_add(adev, vm, abo); 152 } else { 153 ++bo_va->ref_count; 154 } 155 amdgpu_bo_unreserve(abo); 156 return 0; 157 } 158 159 static void amdgpu_gem_object_close(struct drm_gem_object *obj, 160 struct drm_file *file_priv) 161 { 162 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); 163 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); 164 struct amdgpu_fpriv *fpriv = file_priv->driver_priv; 165 struct amdgpu_vm *vm = &fpriv->vm; 166 167 struct amdgpu_bo_list_entry vm_pd; 168 struct list_head list, duplicates; 169 struct dma_fence *fence = NULL; 170 struct ttm_validate_buffer tv; 171 struct ww_acquire_ctx ticket; 172 struct amdgpu_bo_va *bo_va; 173 long r; 174 175 INIT_LIST_HEAD(&list); 176 INIT_LIST_HEAD(&duplicates); 177 178 tv.bo = &bo->tbo; 179 tv.num_shared = 2; 180 list_add(&tv.head, &list); 181 182 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd); 183 184 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates); 185 if (r) { 186 dev_err(adev->dev, "leaking bo va because " 187 "we fail to reserve bo (%ld)\n", r); 188 return; 189 } 190 bo_va = amdgpu_vm_bo_find(vm, bo); 191 if (!bo_va || --bo_va->ref_count) 192 goto out_unlock; 193 194 amdgpu_vm_bo_rmv(adev, bo_va); 195 if (!amdgpu_vm_ready(vm)) 196 goto out_unlock; 197 198 fence = dma_resv_get_excl(bo->tbo.base.resv); 199 if (fence) { 200 amdgpu_bo_fence(bo, fence, true); 201 fence = NULL; 202 } 203 204 r = amdgpu_vm_clear_freed(adev, vm, &fence); 205 if (r || !fence) 206 goto out_unlock; 207 208 amdgpu_bo_fence(bo, fence, true); 209 dma_fence_put(fence); 210 211 out_unlock: 212 if (unlikely(r < 0)) 213 dev_err(adev->dev, "failed to clear page " 214 "tables on GEM object close (%ld)\n", r); 215 ttm_eu_backoff_reservation(&ticket, &list); 216 } 217 218 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = { 219 .free = amdgpu_gem_object_free, 220 .open = amdgpu_gem_object_open, 221 .close = amdgpu_gem_object_close, 222 .export = amdgpu_gem_prime_export, 223 .vmap = amdgpu_gem_prime_vmap, 224 .vunmap = amdgpu_gem_prime_vunmap, 225 }; 226 227 /* 228 * GEM ioctls. 229 */ 230 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, 231 struct drm_file *filp) 232 { 233 struct amdgpu_device *adev = drm_to_adev(dev); 234 struct amdgpu_fpriv *fpriv = filp->driver_priv; 235 struct amdgpu_vm *vm = &fpriv->vm; 236 union drm_amdgpu_gem_create *args = data; 237 uint64_t flags = args->in.domain_flags; 238 uint64_t size = args->in.bo_size; 239 struct dma_resv *resv = NULL; 240 struct drm_gem_object *gobj; 241 uint32_t handle; 242 int r; 243 244 /* reject invalid gem flags */ 245 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 246 AMDGPU_GEM_CREATE_NO_CPU_ACCESS | 247 AMDGPU_GEM_CREATE_CPU_GTT_USWC | 248 AMDGPU_GEM_CREATE_VRAM_CLEARED | 249 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID | 250 AMDGPU_GEM_CREATE_EXPLICIT_SYNC | 251 AMDGPU_GEM_CREATE_ENCRYPTED)) 252 253 return -EINVAL; 254 255 /* reject invalid gem domains */ 256 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK) 257 return -EINVAL; 258 259 if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) { 260 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n"); 261 return -EINVAL; 262 } 263 264 /* create a gem object to contain this object in */ 265 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | 266 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { 267 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 268 /* if gds bo is created from user space, it must be 269 * passed to bo list 270 */ 271 DRM_ERROR("GDS bo cannot be per-vm-bo\n"); 272 return -EINVAL; 273 } 274 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS; 275 } 276 277 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 278 r = amdgpu_bo_reserve(vm->root.base.bo, false); 279 if (r) 280 return r; 281 282 resv = vm->root.base.bo->tbo.base.resv; 283 } 284 285 r = amdgpu_gem_object_create(adev, size, args->in.alignment, 286 (u32)(0xffffffff & args->in.domains), 287 flags, ttm_bo_type_device, resv, &gobj); 288 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) { 289 if (!r) { 290 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); 291 292 abo->parent = amdgpu_bo_ref(vm->root.base.bo); 293 } 294 amdgpu_bo_unreserve(vm->root.base.bo); 295 } 296 if (r) 297 return r; 298 299 r = drm_gem_handle_create(filp, gobj, &handle); 300 /* drop reference from allocate - handle holds it now */ 301 drm_gem_object_put(gobj); 302 if (r) 303 return r; 304 305 memset(args, 0, sizeof(*args)); 306 args->out.handle = handle; 307 return 0; 308 } 309 310 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, 311 struct drm_file *filp) 312 { 313 struct ttm_operation_ctx ctx = { true, false }; 314 struct amdgpu_device *adev = drm_to_adev(dev); 315 struct drm_amdgpu_gem_userptr *args = data; 316 struct drm_gem_object *gobj; 317 struct amdgpu_bo *bo; 318 uint32_t handle; 319 int r; 320 321 args->addr = untagged_addr(args->addr); 322 323 if (offset_in_page(args->addr | args->size)) 324 return -EINVAL; 325 326 /* reject unknown flag values */ 327 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | 328 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | 329 AMDGPU_GEM_USERPTR_REGISTER)) 330 return -EINVAL; 331 332 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && 333 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { 334 335 /* if we want to write to it we must install a MMU notifier */ 336 return -EACCES; 337 } 338 339 /* create a gem object to contain this object in */ 340 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 341 0, ttm_bo_type_device, NULL, &gobj); 342 if (r) 343 return r; 344 345 bo = gem_to_amdgpu_bo(gobj); 346 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; 347 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; 348 r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags); 349 if (r) 350 goto release_object; 351 352 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) { 353 r = amdgpu_mn_register(bo, args->addr); 354 if (r) 355 goto release_object; 356 } 357 358 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { 359 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages); 360 if (r) 361 goto release_object; 362 363 r = amdgpu_bo_reserve(bo, true); 364 if (r) 365 goto user_pages_done; 366 367 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); 368 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); 369 amdgpu_bo_unreserve(bo); 370 if (r) 371 goto user_pages_done; 372 } 373 374 r = drm_gem_handle_create(filp, gobj, &handle); 375 if (r) 376 goto user_pages_done; 377 378 args->handle = handle; 379 380 user_pages_done: 381 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) 382 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm); 383 384 release_object: 385 drm_gem_object_put(gobj); 386 387 return r; 388 } 389 390 int amdgpu_mode_dumb_mmap(struct drm_file *filp, 391 struct drm_device *dev, 392 uint32_t handle, uint64_t *offset_p) 393 { 394 struct drm_gem_object *gobj; 395 struct amdgpu_bo *robj; 396 397 gobj = drm_gem_object_lookup(filp, handle); 398 if (gobj == NULL) { 399 return -ENOENT; 400 } 401 robj = gem_to_amdgpu_bo(gobj); 402 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) || 403 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { 404 drm_gem_object_put(gobj); 405 return -EPERM; 406 } 407 *offset_p = amdgpu_bo_mmap_offset(robj); 408 drm_gem_object_put(gobj); 409 return 0; 410 } 411 412 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, 413 struct drm_file *filp) 414 { 415 union drm_amdgpu_gem_mmap *args = data; 416 uint32_t handle = args->in.handle; 417 memset(args, 0, sizeof(*args)); 418 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr); 419 } 420 421 /** 422 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value 423 * 424 * @timeout_ns: timeout in ns 425 * 426 * Calculate the timeout in jiffies from an absolute timeout in ns. 427 */ 428 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns) 429 { 430 unsigned long timeout_jiffies; 431 ktime_t timeout; 432 433 /* clamp timeout if it's to large */ 434 if (((int64_t)timeout_ns) < 0) 435 return MAX_SCHEDULE_TIMEOUT; 436 437 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); 438 if (ktime_to_ns(timeout) < 0) 439 return 0; 440 441 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); 442 /* clamp timeout to avoid unsigned-> signed overflow */ 443 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT ) 444 return MAX_SCHEDULE_TIMEOUT - 1; 445 446 return timeout_jiffies; 447 } 448 449 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, 450 struct drm_file *filp) 451 { 452 union drm_amdgpu_gem_wait_idle *args = data; 453 struct drm_gem_object *gobj; 454 struct amdgpu_bo *robj; 455 uint32_t handle = args->in.handle; 456 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); 457 int r = 0; 458 long ret; 459 460 gobj = drm_gem_object_lookup(filp, handle); 461 if (gobj == NULL) { 462 return -ENOENT; 463 } 464 robj = gem_to_amdgpu_bo(gobj); 465 ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 466 timeout); 467 468 /* ret == 0 means not signaled, 469 * ret > 0 means signaled 470 * ret < 0 means interrupted before timeout 471 */ 472 if (ret >= 0) { 473 memset(args, 0, sizeof(*args)); 474 args->out.status = (ret == 0); 475 } else 476 r = ret; 477 478 drm_gem_object_put(gobj); 479 return r; 480 } 481 482 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, 483 struct drm_file *filp) 484 { 485 struct drm_amdgpu_gem_metadata *args = data; 486 struct drm_gem_object *gobj; 487 struct amdgpu_bo *robj; 488 int r = -1; 489 490 DRM_DEBUG("%d \n", args->handle); 491 gobj = drm_gem_object_lookup(filp, args->handle); 492 if (gobj == NULL) 493 return -ENOENT; 494 robj = gem_to_amdgpu_bo(gobj); 495 496 r = amdgpu_bo_reserve(robj, false); 497 if (unlikely(r != 0)) 498 goto out; 499 500 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { 501 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); 502 r = amdgpu_bo_get_metadata(robj, args->data.data, 503 sizeof(args->data.data), 504 &args->data.data_size_bytes, 505 &args->data.flags); 506 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { 507 if (args->data.data_size_bytes > sizeof(args->data.data)) { 508 r = -EINVAL; 509 goto unreserve; 510 } 511 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); 512 if (!r) 513 r = amdgpu_bo_set_metadata(robj, args->data.data, 514 args->data.data_size_bytes, 515 args->data.flags); 516 } 517 518 unreserve: 519 amdgpu_bo_unreserve(robj); 520 out: 521 drm_gem_object_put(gobj); 522 return r; 523 } 524 525 /** 526 * amdgpu_gem_va_update_vm -update the bo_va in its VM 527 * 528 * @adev: amdgpu_device pointer 529 * @vm: vm to update 530 * @bo_va: bo_va to update 531 * @operation: map, unmap or clear 532 * 533 * Update the bo_va directly after setting its address. Errors are not 534 * vital here, so they are not reported back to userspace. 535 */ 536 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, 537 struct amdgpu_vm *vm, 538 struct amdgpu_bo_va *bo_va, 539 uint32_t operation) 540 { 541 int r; 542 543 if (!amdgpu_vm_ready(vm)) 544 return; 545 546 r = amdgpu_vm_clear_freed(adev, vm, NULL); 547 if (r) 548 goto error; 549 550 if (operation == AMDGPU_VA_OP_MAP || 551 operation == AMDGPU_VA_OP_REPLACE) { 552 r = amdgpu_vm_bo_update(adev, bo_va, false); 553 if (r) 554 goto error; 555 } 556 557 r = amdgpu_vm_update_pdes(adev, vm, false); 558 559 error: 560 if (r && r != -ERESTARTSYS) 561 DRM_ERROR("Couldn't update BO_VA (%d)\n", r); 562 } 563 564 /** 565 * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags 566 * 567 * @adev: amdgpu_device pointer 568 * @flags: GEM UAPI flags 569 * 570 * Returns the GEM UAPI flags mapped into hardware for the ASIC. 571 */ 572 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags) 573 { 574 uint64_t pte_flag = 0; 575 576 if (flags & AMDGPU_VM_PAGE_EXECUTABLE) 577 pte_flag |= AMDGPU_PTE_EXECUTABLE; 578 if (flags & AMDGPU_VM_PAGE_READABLE) 579 pte_flag |= AMDGPU_PTE_READABLE; 580 if (flags & AMDGPU_VM_PAGE_WRITEABLE) 581 pte_flag |= AMDGPU_PTE_WRITEABLE; 582 if (flags & AMDGPU_VM_PAGE_PRT) 583 pte_flag |= AMDGPU_PTE_PRT; 584 585 if (adev->gmc.gmc_funcs->map_mtype) 586 pte_flag |= amdgpu_gmc_map_mtype(adev, 587 flags & AMDGPU_VM_MTYPE_MASK); 588 589 return pte_flag; 590 } 591 592 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, 593 struct drm_file *filp) 594 { 595 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE | 596 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE | 597 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK; 598 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE | 599 AMDGPU_VM_PAGE_PRT; 600 601 struct drm_amdgpu_gem_va *args = data; 602 struct drm_gem_object *gobj; 603 struct amdgpu_device *adev = drm_to_adev(dev); 604 struct amdgpu_fpriv *fpriv = filp->driver_priv; 605 struct amdgpu_bo *abo; 606 struct amdgpu_bo_va *bo_va; 607 struct amdgpu_bo_list_entry vm_pd; 608 struct ttm_validate_buffer tv; 609 struct ww_acquire_ctx ticket; 610 struct list_head list, duplicates; 611 uint64_t va_flags; 612 int r = 0; 613 614 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) { 615 dev_dbg(&dev->pdev->dev, 616 "va_address 0x%LX is in reserved area 0x%LX\n", 617 args->va_address, AMDGPU_VA_RESERVED_SIZE); 618 return -EINVAL; 619 } 620 621 if (args->va_address >= AMDGPU_GMC_HOLE_START && 622 args->va_address < AMDGPU_GMC_HOLE_END) { 623 dev_dbg(&dev->pdev->dev, 624 "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n", 625 args->va_address, AMDGPU_GMC_HOLE_START, 626 AMDGPU_GMC_HOLE_END); 627 return -EINVAL; 628 } 629 630 args->va_address &= AMDGPU_GMC_HOLE_MASK; 631 632 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) { 633 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n", 634 args->flags); 635 return -EINVAL; 636 } 637 638 switch (args->operation) { 639 case AMDGPU_VA_OP_MAP: 640 case AMDGPU_VA_OP_UNMAP: 641 case AMDGPU_VA_OP_CLEAR: 642 case AMDGPU_VA_OP_REPLACE: 643 break; 644 default: 645 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n", 646 args->operation); 647 return -EINVAL; 648 } 649 650 INIT_LIST_HEAD(&list); 651 INIT_LIST_HEAD(&duplicates); 652 if ((args->operation != AMDGPU_VA_OP_CLEAR) && 653 !(args->flags & AMDGPU_VM_PAGE_PRT)) { 654 gobj = drm_gem_object_lookup(filp, args->handle); 655 if (gobj == NULL) 656 return -ENOENT; 657 abo = gem_to_amdgpu_bo(gobj); 658 tv.bo = &abo->tbo; 659 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 660 tv.num_shared = 1; 661 else 662 tv.num_shared = 0; 663 list_add(&tv.head, &list); 664 } else { 665 gobj = NULL; 666 abo = NULL; 667 } 668 669 amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd); 670 671 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates); 672 if (r) 673 goto error_unref; 674 675 if (abo) { 676 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo); 677 if (!bo_va) { 678 r = -ENOENT; 679 goto error_backoff; 680 } 681 } else if (args->operation != AMDGPU_VA_OP_CLEAR) { 682 bo_va = fpriv->prt_va; 683 } else { 684 bo_va = NULL; 685 } 686 687 switch (args->operation) { 688 case AMDGPU_VA_OP_MAP: 689 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 690 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address, 691 args->offset_in_bo, args->map_size, 692 va_flags); 693 break; 694 case AMDGPU_VA_OP_UNMAP: 695 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address); 696 break; 697 698 case AMDGPU_VA_OP_CLEAR: 699 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm, 700 args->va_address, 701 args->map_size); 702 break; 703 case AMDGPU_VA_OP_REPLACE: 704 va_flags = amdgpu_gem_va_map_flags(adev, args->flags); 705 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address, 706 args->offset_in_bo, args->map_size, 707 va_flags); 708 break; 709 default: 710 break; 711 } 712 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug) 713 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, 714 args->operation); 715 716 error_backoff: 717 ttm_eu_backoff_reservation(&ticket, &list); 718 719 error_unref: 720 drm_gem_object_put(gobj); 721 return r; 722 } 723 724 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data, 725 struct drm_file *filp) 726 { 727 struct amdgpu_device *adev = drm_to_adev(dev); 728 struct drm_amdgpu_gem_op *args = data; 729 struct drm_gem_object *gobj; 730 struct amdgpu_vm_bo_base *base; 731 struct amdgpu_bo *robj; 732 int r; 733 734 gobj = drm_gem_object_lookup(filp, args->handle); 735 if (gobj == NULL) { 736 return -ENOENT; 737 } 738 robj = gem_to_amdgpu_bo(gobj); 739 740 r = amdgpu_bo_reserve(robj, false); 741 if (unlikely(r)) 742 goto out; 743 744 switch (args->op) { 745 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: { 746 struct drm_amdgpu_gem_create_in info; 747 void __user *out = u64_to_user_ptr(args->value); 748 749 info.bo_size = robj->tbo.base.size; 750 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT; 751 info.domains = robj->preferred_domains; 752 info.domain_flags = robj->flags; 753 amdgpu_bo_unreserve(robj); 754 if (copy_to_user(out, &info, sizeof(info))) 755 r = -EFAULT; 756 break; 757 } 758 case AMDGPU_GEM_OP_SET_PLACEMENT: 759 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) { 760 r = -EINVAL; 761 amdgpu_bo_unreserve(robj); 762 break; 763 } 764 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) { 765 r = -EPERM; 766 amdgpu_bo_unreserve(robj); 767 break; 768 } 769 for (base = robj->vm_bo; base; base = base->next) 770 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev), 771 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) { 772 r = -EINVAL; 773 amdgpu_bo_unreserve(robj); 774 goto out; 775 } 776 777 778 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM | 779 AMDGPU_GEM_DOMAIN_GTT | 780 AMDGPU_GEM_DOMAIN_CPU); 781 robj->allowed_domains = robj->preferred_domains; 782 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM) 783 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT; 784 785 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) 786 amdgpu_vm_bo_invalidate(adev, robj, true); 787 788 amdgpu_bo_unreserve(robj); 789 break; 790 default: 791 amdgpu_bo_unreserve(robj); 792 r = -EINVAL; 793 } 794 795 out: 796 drm_gem_object_put(gobj); 797 return r; 798 } 799 800 int amdgpu_mode_dumb_create(struct drm_file *file_priv, 801 struct drm_device *dev, 802 struct drm_mode_create_dumb *args) 803 { 804 struct amdgpu_device *adev = drm_to_adev(dev); 805 struct drm_gem_object *gobj; 806 uint32_t handle; 807 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | 808 AMDGPU_GEM_CREATE_CPU_GTT_USWC; 809 u32 domain; 810 int r; 811 812 /* 813 * The buffer returned from this function should be cleared, but 814 * it can only be done if the ring is enabled or we'll fail to 815 * create the buffer. 816 */ 817 if (adev->mman.buffer_funcs_enabled) 818 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; 819 820 args->pitch = amdgpu_align_pitch(adev, args->width, 821 DIV_ROUND_UP(args->bpp, 8), 0); 822 args->size = (u64)args->pitch * args->height; 823 args->size = ALIGN(args->size, PAGE_SIZE); 824 domain = amdgpu_bo_get_preferred_pin_domain(adev, 825 amdgpu_display_supported_domains(adev, flags)); 826 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags, 827 ttm_bo_type_device, NULL, &gobj); 828 if (r) 829 return -ENOMEM; 830 831 r = drm_gem_handle_create(file_priv, gobj, &handle); 832 /* drop reference from allocate - handle holds it now */ 833 drm_gem_object_put(gobj); 834 if (r) { 835 return r; 836 } 837 args->handle = handle; 838 return 0; 839 } 840 841 #if defined(CONFIG_DEBUG_FS) 842 843 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag) \ 844 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \ 845 seq_printf((m), " " #flag); \ 846 } 847 848 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data) 849 { 850 struct drm_gem_object *gobj = ptr; 851 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); 852 struct seq_file *m = data; 853 854 struct dma_buf_attachment *attachment; 855 struct dma_buf *dma_buf; 856 unsigned domain; 857 const char *placement; 858 unsigned pin_count; 859 860 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); 861 switch (domain) { 862 case AMDGPU_GEM_DOMAIN_VRAM: 863 placement = "VRAM"; 864 break; 865 case AMDGPU_GEM_DOMAIN_GTT: 866 placement = " GTT"; 867 break; 868 case AMDGPU_GEM_DOMAIN_CPU: 869 default: 870 placement = " CPU"; 871 break; 872 } 873 seq_printf(m, "\t0x%08x: %12ld byte %s", 874 id, amdgpu_bo_size(bo), placement); 875 876 pin_count = READ_ONCE(bo->tbo.pin_count); 877 if (pin_count) 878 seq_printf(m, " pin count %d", pin_count); 879 880 dma_buf = READ_ONCE(bo->tbo.base.dma_buf); 881 attachment = READ_ONCE(bo->tbo.base.import_attach); 882 883 if (attachment) 884 seq_printf(m, " imported from %p%s", dma_buf, 885 attachment->peer2peer ? " P2P" : ""); 886 else if (dma_buf) 887 seq_printf(m, " exported as %p", dma_buf); 888 889 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED); 890 amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS); 891 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC); 892 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED); 893 amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW); 894 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS); 895 amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID); 896 amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC); 897 898 seq_printf(m, "\n"); 899 900 return 0; 901 } 902 903 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) 904 { 905 struct drm_info_node *node = (struct drm_info_node *)m->private; 906 struct drm_device *dev = node->minor->dev; 907 struct drm_file *file; 908 int r; 909 910 r = mutex_lock_interruptible(&dev->filelist_mutex); 911 if (r) 912 return r; 913 914 list_for_each_entry(file, &dev->filelist, lhead) { 915 struct task_struct *task; 916 917 /* 918 * Although we have a valid reference on file->pid, that does 919 * not guarantee that the task_struct who called get_pid() is 920 * still alive (e.g. get_pid(current) => fork() => exit()). 921 * Therefore, we need to protect this ->comm access using RCU. 922 */ 923 rcu_read_lock(); 924 task = pid_task(file->pid, PIDTYPE_PID); 925 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid), 926 task ? task->comm : "<unknown>"); 927 rcu_read_unlock(); 928 929 spin_lock(&file->table_lock); 930 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m); 931 spin_unlock(&file->table_lock); 932 } 933 934 mutex_unlock(&dev->filelist_mutex); 935 return 0; 936 } 937 938 static const struct drm_info_list amdgpu_debugfs_gem_list[] = { 939 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL}, 940 }; 941 #endif 942 943 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev) 944 { 945 #if defined(CONFIG_DEBUG_FS) 946 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 947 ARRAY_SIZE(amdgpu_debugfs_gem_list)); 948 #endif 949 return 0; 950 } 951