drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

   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/pagemap.h>
  30 #include <drm/drmP.h>
  31 #include <drm/amdgpu_drm.h>
  32 #include "amdgpu.h"
  33
  34 void amdgpu_gem_object_free(struct drm_gem_object *gobj)
  35 {
  36         struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
  37
  38         if (robj) {
  39                 if (robj->gem_base.import_attach)
  40                         drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
  41                 amdgpu_mn_unregister(robj);
  42                 amdgpu_bo_unref(&robj);
  43         }
  44 }
  45
  46 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
  47                              int alignment, u32 initial_domain,
  48                              u64 flags, bool kernel,
  49                              struct reservation_object *resv,
  50                              struct drm_gem_object **obj)
  51 {
  52         struct amdgpu_bo *bo;
  53         int r;
  54
  55         *obj = NULL;
  56         /* At least align on page size */
  57         if (alignment < PAGE_SIZE) {
  58                 alignment = PAGE_SIZE;
  59         }
  60
  61 retry:
  62         r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain,
  63                              flags, NULL, resv, 0, &bo);
  64         if (r) {
  65                 if (r != -ERESTARTSYS) {
  66                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
  67                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
  68                                 goto retry;
  69                         }
  70                         DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
  71                                   size, initial_domain, alignment, r);
  72                 }
  73                 return r;
  74         }
  75         *obj = &bo->gem_base;
  76
  77         return 0;
  78 }
  79
  80 void amdgpu_gem_force_release(struct amdgpu_device *adev)
  81 {
  82         struct drm_device *ddev = adev->ddev;
  83         struct drm_file *file;
  84
  85         mutex_lock(&ddev->filelist_mutex);
  86
  87         list_for_each_entry(file, &ddev->filelist, lhead) {
  88                 struct drm_gem_object *gobj;
  89                 int handle;
  90
  91                 WARN_ONCE(1, "Still active user space clients!\n");
  92                 spin_lock(&file->table_lock);
  93                 idr_for_each_entry(&file->object_idr, gobj, handle) {
  94                         WARN_ONCE(1, "And also active allocations!\n");
  95                         drm_gem_object_put_unlocked(gobj);
  96                 }
  97                 idr_destroy(&file->object_idr);
  98                 spin_unlock(&file->table_lock);
  99         }
 100
 101         mutex_unlock(&ddev->filelist_mutex);
 102 }
 103
 104 /*
 105  * Call from drm_gem_handle_create which appear in both new and open ioctl
 106  * case.
 107  */
 108 int amdgpu_gem_object_open(struct drm_gem_object *obj,
 109                            struct drm_file *file_priv)
 110 {
 111         struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
 112         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
 113         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 114         struct amdgpu_vm *vm = &fpriv->vm;
 115         struct amdgpu_bo_va *bo_va;
 116         struct mm_struct *mm;
 117         int r;
 118
 119         mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
 120         if (mm && mm != current->mm)
 121                 return -EPERM;
 122
 123         if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
 124             abo->tbo.resv != vm->root.base.bo->tbo.resv)
 125                 return -EPERM;
 126
 127         r = amdgpu_bo_reserve(abo, false);
 128         if (r)
 129                 return r;
 130
 131         bo_va = amdgpu_vm_bo_find(vm, abo);
 132         if (!bo_va) {
 133                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
 134         } else {
 135                 ++bo_va->ref_count;
 136         }
 137         amdgpu_bo_unreserve(abo);
 138         return 0;
 139 }
 140
 141 void amdgpu_gem_object_close(struct drm_gem_object *obj,
 142                              struct drm_file *file_priv)
 143 {
 144         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
 145         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 146         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 147         struct amdgpu_vm *vm = &fpriv->vm;
 148
 149         struct amdgpu_bo_list_entry vm_pd;
 150         struct list_head list, duplicates;
 151         struct ttm_validate_buffer tv;
 152         struct ww_acquire_ctx ticket;
 153         struct amdgpu_bo_va *bo_va;
 154         int r;
 155
 156         INIT_LIST_HEAD(&list);
 157         INIT_LIST_HEAD(&duplicates);
 158
 159         tv.bo = &bo->tbo;
 160         tv.shared = true;
 161         list_add(&tv.head, &list);
 162
 163         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
 164
 165         r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
 166         if (r) {
 167                 dev_err(adev->dev, "leaking bo va because "
 168                         "we fail to reserve bo (%d)\n", r);
 169                 return;
 170         }
 171         bo_va = amdgpu_vm_bo_find(vm, bo);
 172         if (bo_va && --bo_va->ref_count == 0) {
 173                 amdgpu_vm_bo_rmv(adev, bo_va);
 174
 175                 if (amdgpu_vm_ready(vm)) {
 176                         struct dma_fence *fence = NULL;
 177
 178                         r = amdgpu_vm_clear_freed(adev, vm, &fence);
 179                         if (unlikely(r)) {
 180                                 dev_err(adev->dev, "failed to clear page "
 181                                         "tables on GEM object close (%d)\n", r);
 182                         }
 183
 184                         if (fence) {
 185                                 amdgpu_bo_fence(bo, fence, true);
 186                                 dma_fence_put(fence);
 187                         }
 188                 }
 189         }
 190         ttm_eu_backoff_reservation(&ticket, &list);
 191 }
 192
 193 /*
 194  * GEM ioctls.
 195  */
 196 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 197                             struct drm_file *filp)
 198 {
 199         struct amdgpu_device *adev = dev->dev_private;
 200         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 201         struct amdgpu_vm *vm = &fpriv->vm;
 202         union drm_amdgpu_gem_create *args = data;
 203         uint64_t flags = args->in.domain_flags;
 204         uint64_t size = args->in.bo_size;
 205         struct reservation_object *resv = NULL;
 206         struct drm_gem_object *gobj;
 207         uint32_t handle;
 208         int r;
 209
 210         /* reject invalid gem flags */
 211         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 212                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
 213                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 214                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
 215                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
 216                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC))
 217
 218                 return -EINVAL;
 219
 220         /* reject invalid gem domains */
 221         if (args->in.domains & ~(AMDGPU_GEM_DOMAIN_CPU |
 222                                  AMDGPU_GEM_DOMAIN_GTT |
 223                                  AMDGPU_GEM_DOMAIN_VRAM |
 224                                  AMDGPU_GEM_DOMAIN_GDS |
 225                                  AMDGPU_GEM_DOMAIN_GWS |
 226                                  AMDGPU_GEM_DOMAIN_OA))
 227                 return -EINVAL;
 228
 229         /* create a gem object to contain this object in */
 230         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
 231             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
 232                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
 233                 if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS)
 234                         size = size << AMDGPU_GDS_SHIFT;
 235                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS)
 236                         size = size << AMDGPU_GWS_SHIFT;
 237                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA)
 238                         size = size << AMDGPU_OA_SHIFT;
 239                 else
 240                         return -EINVAL;
 241         }
 242         size = roundup(size, PAGE_SIZE);
 243
 244         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
 245                 r = amdgpu_bo_reserve(vm->root.base.bo, false);
 246                 if (r)
 247                         return r;
 248
 249                 resv = vm->root.base.bo->tbo.resv;
 250         }
 251
 252         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
 253                                      (u32)(0xffffffff & args->in.domains),
 254                                      flags, false, resv, &gobj);
 255         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
 256                 if (!r) {
 257                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
 258
 259                         abo->parent = amdgpu_bo_ref(vm->root.base.bo);
 260                 }
 261                 amdgpu_bo_unreserve(vm->root.base.bo);
 262         }
 263         if (r)
 264                 return r;
 265
 266         r = drm_gem_handle_create(filp, gobj, &handle);
 267         /* drop reference from allocate - handle holds it now */
 268         drm_gem_object_put_unlocked(gobj);
 269         if (r)
 270                 return r;
 271
 272         memset(args, 0, sizeof(*args));
 273         args->out.handle = handle;
 274         return 0;
 275 }
 276
 277 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
 278                              struct drm_file *filp)
 279 {
 280         struct amdgpu_device *adev = dev->dev_private;
 281         struct drm_amdgpu_gem_userptr *args = data;
 282         struct drm_gem_object *gobj;
 283         struct amdgpu_bo *bo;
 284         uint32_t handle;
 285         int r;
 286
 287         if (offset_in_page(args->addr | args->size))
 288                 return -EINVAL;
 289
 290         /* reject unknown flag values */
 291         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
 292             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
 293             AMDGPU_GEM_USERPTR_REGISTER))
 294                 return -EINVAL;
 295
 296         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
 297              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
 298
 299                 /* if we want to write to it we must install a MMU notifier */
 300                 return -EACCES;
 301         }
 302
 303         /* create a gem object to contain this object in */
 304         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
 305                                      0, 0, NULL, &gobj);
 306         if (r)
 307                 return r;
 308
 309         bo = gem_to_amdgpu_bo(gobj);
 310         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
 311         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
 312         r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
 313         if (r)
 314                 goto release_object;
 315
 316         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
 317                 r = amdgpu_mn_register(bo, args->addr);
 318                 if (r)
 319                         goto release_object;
 320         }
 321
 322         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
 323                 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
 324                                                  bo->tbo.ttm->pages);
 325                 if (r)
 326                         goto unlock_mmap_sem;
 327
 328                 r = amdgpu_bo_reserve(bo, true);
 329                 if (r)
 330                         goto free_pages;
 331
 332                 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
 333                 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 334                 amdgpu_bo_unreserve(bo);
 335                 if (r)
 336                         goto free_pages;
 337         }
 338
 339         r = drm_gem_handle_create(filp, gobj, &handle);
 340         /* drop reference from allocate - handle holds it now */
 341         drm_gem_object_put_unlocked(gobj);
 342         if (r)
 343                 return r;
 344
 345         args->handle = handle;
 346         return 0;
 347
 348 free_pages:
 349         release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages, false);
 350
 351 unlock_mmap_sem:
 352         up_read(&current->mm->mmap_sem);
 353
 354 release_object:
 355         drm_gem_object_put_unlocked(gobj);
 356
 357         return r;
 358 }
 359
 360 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
 361                           struct drm_device *dev,
 362                           uint32_t handle, uint64_t *offset_p)
 363 {
 364         struct drm_gem_object *gobj;
 365         struct amdgpu_bo *robj;
 366
 367         gobj = drm_gem_object_lookup(filp, handle);
 368         if (gobj == NULL) {
 369                 return -ENOENT;
 370         }
 371         robj = gem_to_amdgpu_bo(gobj);
 372         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
 373             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
 374                 drm_gem_object_put_unlocked(gobj);
 375                 return -EPERM;
 376         }
 377         *offset_p = amdgpu_bo_mmap_offset(robj);
 378         drm_gem_object_put_unlocked(gobj);
 379         return 0;
 380 }
 381
 382 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
 383                           struct drm_file *filp)
 384 {
 385         union drm_amdgpu_gem_mmap *args = data;
 386         uint32_t handle = args->in.handle;
 387         memset(args, 0, sizeof(*args));
 388         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
 389 }
 390
 391 /**
 392  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
 393  *
 394  * @timeout_ns: timeout in ns
 395  *
 396  * Calculate the timeout in jiffies from an absolute timeout in ns.
 397  */
 398 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
 399 {
 400         unsigned long timeout_jiffies;
 401         ktime_t timeout;
 402
 403         /* clamp timeout if it's to large */
 404         if (((int64_t)timeout_ns) < 0)
 405                 return MAX_SCHEDULE_TIMEOUT;
 406
 407         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
 408         if (ktime_to_ns(timeout) < 0)
 409                 return 0;
 410
 411         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
 412         /*  clamp timeout to avoid unsigned-> signed overflow */
 413         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
 414                 return MAX_SCHEDULE_TIMEOUT - 1;
 415
 416         return timeout_jiffies;
 417 }
 418
 419 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 420                               struct drm_file *filp)
 421 {
 422         union drm_amdgpu_gem_wait_idle *args = data;
 423         struct drm_gem_object *gobj;
 424         struct amdgpu_bo *robj;
 425         uint32_t handle = args->in.handle;
 426         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
 427         int r = 0;
 428         long ret;
 429
 430         gobj = drm_gem_object_lookup(filp, handle);
 431         if (gobj == NULL) {
 432                 return -ENOENT;
 433         }
 434         robj = gem_to_amdgpu_bo(gobj);
 435         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
 436                                                   timeout);
 437
 438         /* ret == 0 means not signaled,
 439          * ret > 0 means signaled
 440          * ret < 0 means interrupted before timeout
 441          */
 442         if (ret >= 0) {
 443                 memset(args, 0, sizeof(*args));
 444                 args->out.status = (ret == 0);
 445         } else
 446                 r = ret;
 447
 448         drm_gem_object_put_unlocked(gobj);
 449         return r;
 450 }
 451
 452 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
 453                                 struct drm_file *filp)
 454 {
 455         struct drm_amdgpu_gem_metadata *args = data;
 456         struct drm_gem_object *gobj;
 457         struct amdgpu_bo *robj;
 458         int r = -1;
 459
 460         DRM_DEBUG("%d \n", args->handle);
 461         gobj = drm_gem_object_lookup(filp, args->handle);
 462         if (gobj == NULL)
 463                 return -ENOENT;
 464         robj = gem_to_amdgpu_bo(gobj);
 465
 466         r = amdgpu_bo_reserve(robj, false);
 467         if (unlikely(r != 0))
 468                 goto out;
 469
 470         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
 471                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
 472                 r = amdgpu_bo_get_metadata(robj, args->data.data,
 473                                            sizeof(args->data.data),
 474                                            &args->data.data_size_bytes,
 475                                            &args->data.flags);
 476         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
 477                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
 478                         r = -EINVAL;
 479                         goto unreserve;
 480                 }
 481                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
 482                 if (!r)
 483                         r = amdgpu_bo_set_metadata(robj, args->data.data,
 484                                                    args->data.data_size_bytes,
 485                                                    args->data.flags);
 486         }
 487
 488 unreserve:
 489         amdgpu_bo_unreserve(robj);
 490 out:
 491         drm_gem_object_put_unlocked(gobj);
 492         return r;
 493 }
 494
 495 /**
 496  * amdgpu_gem_va_update_vm -update the bo_va in its VM
 497  *
 498  * @adev: amdgpu_device pointer
 499  * @vm: vm to update
 500  * @bo_va: bo_va to update
 501  * @list: validation list
 502  * @operation: map, unmap or clear
 503  *
 504  * Update the bo_va directly after setting its address. Errors are not
 505  * vital here, so they are not reported back to userspace.
 506  */
 507 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
 508                                     struct amdgpu_vm *vm,
 509                                     struct amdgpu_bo_va *bo_va,
 510                                     struct list_head *list,
 511                                     uint32_t operation)
 512 {
 513         int r;
 514
 515         if (!amdgpu_vm_ready(vm))
 516                 return;
 517
 518         r = amdgpu_vm_update_directories(adev, vm);
 519         if (r)
 520                 goto error;
 521
 522         r = amdgpu_vm_clear_freed(adev, vm, NULL);
 523         if (r)
 524                 goto error;
 525
 526         if (operation == AMDGPU_VA_OP_MAP ||
 527             operation == AMDGPU_VA_OP_REPLACE)
 528                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 529
 530 error:
 531         if (r && r != -ERESTARTSYS)
 532                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
 533 }
 534
 535 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 536                           struct drm_file *filp)
 537 {
 538         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
 539                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
 540                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
 541         const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
 542                 AMDGPU_VM_PAGE_PRT;
 543
 544         struct drm_amdgpu_gem_va *args = data;
 545         struct drm_gem_object *gobj;
 546         struct amdgpu_device *adev = dev->dev_private;
 547         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 548         struct amdgpu_bo *abo;
 549         struct amdgpu_bo_va *bo_va;
 550         struct amdgpu_bo_list_entry vm_pd;
 551         struct ttm_validate_buffer tv;
 552         struct ww_acquire_ctx ticket;
 553         struct list_head list, duplicates;
 554         uint64_t va_flags;
 555         int r = 0;
 556
 557         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
 558                 dev_err(&dev->pdev->dev,
 559                         "va_address 0x%lX is in reserved area 0x%X\n",
 560                         (unsigned long)args->va_address,
 561                         AMDGPU_VA_RESERVED_SIZE);
 562                 return -EINVAL;
 563         }
 564
 565         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
 566                 dev_err(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
 567                         args->flags);
 568                 return -EINVAL;
 569         }
 570
 571         switch (args->operation) {
 572         case AMDGPU_VA_OP_MAP:
 573         case AMDGPU_VA_OP_UNMAP:
 574         case AMDGPU_VA_OP_CLEAR:
 575         case AMDGPU_VA_OP_REPLACE:
 576                 break;
 577         default:
 578                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 579                         args->operation);
 580                 return -EINVAL;
 581         }
 582
 583         INIT_LIST_HEAD(&list);
 584         INIT_LIST_HEAD(&duplicates);
 585         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
 586             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
 587                 gobj = drm_gem_object_lookup(filp, args->handle);
 588                 if (gobj == NULL)
 589                         return -ENOENT;
 590                 abo = gem_to_amdgpu_bo(gobj);
 591                 tv.bo = &abo->tbo;
 592                 tv.shared = false;
 593                 list_add(&tv.head, &list);
 594         } else {
 595                 gobj = NULL;
 596                 abo = NULL;
 597         }
 598
 599         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
 600
 601         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
 602         if (r)
 603                 goto error_unref;
 604
 605         if (abo) {
 606                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
 607                 if (!bo_va) {
 608                         r = -ENOENT;
 609                         goto error_backoff;
 610                 }
 611         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
 612                 bo_va = fpriv->prt_va;
 613         } else {
 614                 bo_va = NULL;
 615         }
 616
 617         switch (args->operation) {
 618         case AMDGPU_VA_OP_MAP:
 619                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
 620                                         args->map_size);
 621                 if (r)
 622                         goto error_backoff;
 623
 624                 va_flags = amdgpu_vm_get_pte_flags(adev, args->flags);
 625                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
 626                                      args->offset_in_bo, args->map_size,
 627                                      va_flags);
 628                 break;
 629         case AMDGPU_VA_OP_UNMAP:
 630                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
 631                 break;
 632
 633         case AMDGPU_VA_OP_CLEAR:
 634                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
 635                                                 args->va_address,
 636                                                 args->map_size);
 637                 break;
 638         case AMDGPU_VA_OP_REPLACE:
 639                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
 640                                         args->map_size);
 641                 if (r)
 642                         goto error_backoff;
 643
 644                 va_flags = amdgpu_vm_get_pte_flags(adev, args->flags);
 645                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
 646                                              args->offset_in_bo, args->map_size,
 647                                              va_flags);
 648                 break;
 649         default:
 650                 break;
 651         }
 652         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
 653                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, &list,
 654                                         args->operation);
 655
 656 error_backoff:
 657         ttm_eu_backoff_reservation(&ticket, &list);
 658
 659 error_unref:
 660         drm_gem_object_put_unlocked(gobj);
 661         return r;
 662 }
 663
 664 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
 665                         struct drm_file *filp)
 666 {
 667         struct amdgpu_device *adev = dev->dev_private;
 668         struct drm_amdgpu_gem_op *args = data;
 669         struct drm_gem_object *gobj;
 670         struct amdgpu_bo *robj;
 671         int r;
 672
 673         gobj = drm_gem_object_lookup(filp, args->handle);
 674         if (gobj == NULL) {
 675                 return -ENOENT;
 676         }
 677         robj = gem_to_amdgpu_bo(gobj);
 678
 679         r = amdgpu_bo_reserve(robj, false);
 680         if (unlikely(r))
 681                 goto out;
 682
 683         switch (args->op) {
 684         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
 685                 struct drm_amdgpu_gem_create_in info;
 686                 void __user *out = u64_to_user_ptr(args->value);
 687
 688                 info.bo_size = robj->gem_base.size;
 689                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
 690                 info.domains = robj->preferred_domains;
 691                 info.domain_flags = robj->flags;
 692                 amdgpu_bo_unreserve(robj);
 693                 if (copy_to_user(out, &info, sizeof(info)))
 694                         r = -EFAULT;
 695                 break;
 696         }
 697         case AMDGPU_GEM_OP_SET_PLACEMENT:
 698                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
 699                         r = -EINVAL;
 700                         amdgpu_bo_unreserve(robj);
 701                         break;
 702                 }
 703                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
 704                         r = -EPERM;
 705                         amdgpu_bo_unreserve(robj);
 706                         break;
 707                 }
 708                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
 709                                                         AMDGPU_GEM_DOMAIN_GTT |
 710                                                         AMDGPU_GEM_DOMAIN_CPU);
 711                 robj->allowed_domains = robj->preferred_domains;
 712                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 713                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 714
 715                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
 716                         amdgpu_vm_bo_invalidate(adev, robj, true);
 717
 718                 amdgpu_bo_unreserve(robj);
 719                 break;
 720         default:
 721                 amdgpu_bo_unreserve(robj);
 722                 r = -EINVAL;
 723         }
 724
 725 out:
 726         drm_gem_object_put_unlocked(gobj);
 727         return r;
 728 }
 729
 730 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
 731                             struct drm_device *dev,
 732                             struct drm_mode_create_dumb *args)
 733 {
 734         struct amdgpu_device *adev = dev->dev_private;
 735         struct drm_gem_object *gobj;
 736         uint32_t handle;
 737         int r;
 738
 739         args->pitch = amdgpu_align_pitch(adev, args->width,
 740                                          DIV_ROUND_UP(args->bpp, 8), 0);
 741         args->size = (u64)args->pitch * args->height;
 742         args->size = ALIGN(args->size, PAGE_SIZE);
 743
 744         r = amdgpu_gem_object_create(adev, args->size, 0,
 745                                      AMDGPU_GEM_DOMAIN_VRAM,
 746                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 747                                      false, NULL, &gobj);
 748         if (r)
 749                 return -ENOMEM;
 750
 751         r = drm_gem_handle_create(file_priv, gobj, &handle);
 752         /* drop reference from allocate - handle holds it now */
 753         drm_gem_object_put_unlocked(gobj);
 754         if (r) {
 755                 return r;
 756         }
 757         args->handle = handle;
 758         return 0;
 759 }
 760
 761 #if defined(CONFIG_DEBUG_FS)
 762 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
 763 {
 764         struct drm_gem_object *gobj = ptr;
 765         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
 766         struct seq_file *m = data;
 767
 768         unsigned domain;
 769         const char *placement;
 770         unsigned pin_count;
 771         uint64_t offset;
 772
 773         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
 774         switch (domain) {
 775         case AMDGPU_GEM_DOMAIN_VRAM:
 776                 placement = "VRAM";
 777                 break;
 778         case AMDGPU_GEM_DOMAIN_GTT:
 779                 placement = " GTT";
 780                 break;
 781         case AMDGPU_GEM_DOMAIN_CPU:
 782         default:
 783                 placement = " CPU";
 784                 break;
 785         }
 786         seq_printf(m, "\t0x%08x: %12ld byte %s",
 787                    id, amdgpu_bo_size(bo), placement);
 788
 789         offset = ACCESS_ONCE(bo->tbo.mem.start);
 790         if (offset != AMDGPU_BO_INVALID_OFFSET)
 791                 seq_printf(m, " @ 0x%010Lx", offset);
 792
 793         pin_count = ACCESS_ONCE(bo->pin_count);
 794         if (pin_count)
 795                 seq_printf(m, " pin count %d", pin_count);
 796         seq_printf(m, "\n");
 797
 798         return 0;
 799 }
 800
 801 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
 802 {
 803         struct drm_info_node *node = (struct drm_info_node *)m->private;
 804         struct drm_device *dev = node->minor->dev;
 805         struct drm_file *file;
 806         int r;
 807
 808         r = mutex_lock_interruptible(&dev->filelist_mutex);
 809         if (r)
 810                 return r;
 811
 812         list_for_each_entry(file, &dev->filelist, lhead) {
 813                 struct task_struct *task;
 814
 815                 /*
 816                  * Although we have a valid reference on file->pid, that does
 817                  * not guarantee that the task_struct who called get_pid() is
 818                  * still alive (e.g. get_pid(current) => fork() => exit()).
 819                  * Therefore, we need to protect this ->comm access using RCU.
 820                  */
 821                 rcu_read_lock();
 822                 task = pid_task(file->pid, PIDTYPE_PID);
 823                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
 824                            task ? task->comm : "<unknown>");
 825                 rcu_read_unlock();
 826
 827                 spin_lock(&file->table_lock);
 828                 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
 829                 spin_unlock(&file->table_lock);
 830         }
 831
 832         mutex_unlock(&dev->filelist_mutex);
 833         return 0;
 834 }
 835
 836 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
 837         {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
 838 };
 839 #endif
 840
 841 int amdgpu_gem_debugfs_init(struct amdgpu_device *adev)
 842 {
 843 #if defined(CONFIG_DEBUG_FS)
 844         return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
 845 #endif
 846         return 0;
 847 }