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 drm_gem_object **obj)
  50 {
  51         struct amdgpu_bo *robj;
  52         int r;
  53
  54         *obj = NULL;
  55         /* At least align on page size */
  56         if (alignment < PAGE_SIZE) {
  57                 alignment = PAGE_SIZE;
  58         }
  59
  60 retry:
  61         r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain,
  62                              flags, NULL, NULL, 0, &robj);
  63         if (r) {
  64                 if (r != -ERESTARTSYS) {
  65                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
  66                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
  67                                 goto retry;
  68                         }
  69                         DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
  70                                   size, initial_domain, alignment, r);
  71                 }
  72                 return r;
  73         }
  74         *obj = &robj->gem_base;
  75
  76         return 0;
  77 }
  78
  79 void amdgpu_gem_force_release(struct amdgpu_device *adev)
  80 {
  81         struct drm_device *ddev = adev->ddev;
  82         struct drm_file *file;
  83
  84         mutex_lock(&ddev->filelist_mutex);
  85
  86         list_for_each_entry(file, &ddev->filelist, lhead) {
  87                 struct drm_gem_object *gobj;
  88                 int handle;
  89
  90                 WARN_ONCE(1, "Still active user space clients!\n");
  91                 spin_lock(&file->table_lock);
  92                 idr_for_each_entry(&file->object_idr, gobj, handle) {
  93                         WARN_ONCE(1, "And also active allocations!\n");
  94                         drm_gem_object_put_unlocked(gobj);
  95                 }
  96                 idr_destroy(&file->object_idr);
  97                 spin_unlock(&file->table_lock);
  98         }
  99
 100         mutex_unlock(&ddev->filelist_mutex);
 101 }
 102
 103 /*
 104  * Call from drm_gem_handle_create which appear in both new and open ioctl
 105  * case.
 106  */
 107 int amdgpu_gem_object_open(struct drm_gem_object *obj,
 108                            struct drm_file *file_priv)
 109 {
 110         struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
 111         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
 112         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 113         struct amdgpu_vm *vm = &fpriv->vm;
 114         struct amdgpu_bo_va *bo_va;
 115         int r;
 116         r = amdgpu_bo_reserve(abo, false);
 117         if (r)
 118                 return r;
 119
 120         bo_va = amdgpu_vm_bo_find(vm, abo);
 121         if (!bo_va) {
 122                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
 123         } else {
 124                 ++bo_va->ref_count;
 125         }
 126         amdgpu_bo_unreserve(abo);
 127         return 0;
 128 }
 129
 130 static int amdgpu_gem_vm_check(void *param, struct amdgpu_bo *bo)
 131 {
 132         /* if anything is swapped out don't swap it in here,
 133            just abort and wait for the next CS */
 134         if (!amdgpu_bo_gpu_accessible(bo))
 135                 return -ERESTARTSYS;
 136
 137         if (bo->shadow && !amdgpu_bo_gpu_accessible(bo->shadow))
 138                 return -ERESTARTSYS;
 139
 140         return 0;
 141 }
 142
 143 static bool amdgpu_gem_vm_ready(struct amdgpu_device *adev,
 144                                 struct amdgpu_vm *vm,
 145                                 struct list_head *list)
 146 {
 147         struct ttm_validate_buffer *entry;
 148
 149         list_for_each_entry(entry, list, head) {
 150                 struct amdgpu_bo *bo =
 151                         container_of(entry->bo, struct amdgpu_bo, tbo);
 152                 if (amdgpu_gem_vm_check(NULL, bo))
 153                         return false;
 154         }
 155
 156         return !amdgpu_vm_validate_pt_bos(adev, vm, amdgpu_gem_vm_check, NULL);
 157 }
 158
 159 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;
 169         struct ttm_validate_buffer tv;
 170         struct ww_acquire_ctx ticket;
 171         struct amdgpu_bo_va *bo_va;
 172         int r;
 173
 174         INIT_LIST_HEAD(&list);
 175
 176         tv.bo = &bo->tbo;
 177         tv.shared = true;
 178         list_add(&tv.head, &list);
 179
 180         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
 181
 182         r = ttm_eu_reserve_buffers(&ticket, &list, false, NULL);
 183         if (r) {
 184                 dev_err(adev->dev, "leaking bo va because "
 185                         "we fail to reserve bo (%d)\n", r);
 186                 return;
 187         }
 188         bo_va = amdgpu_vm_bo_find(vm, bo);
 189         if (bo_va && --bo_va->ref_count == 0) {
 190                 amdgpu_vm_bo_rmv(adev, bo_va);
 191
 192                 if (amdgpu_gem_vm_ready(adev, vm, &list)) {
 193                         struct dma_fence *fence = NULL;
 194
 195                         r = amdgpu_vm_clear_freed(adev, vm, &fence);
 196                         if (unlikely(r)) {
 197                                 dev_err(adev->dev, "failed to clear page "
 198                                         "tables on GEM object close (%d)\n", r);
 199                         }
 200
 201                         if (fence) {
 202                                 amdgpu_bo_fence(bo, fence, true);
 203                                 dma_fence_put(fence);
 204                         }
 205                 }
 206         }
 207         ttm_eu_backoff_reservation(&ticket, &list);
 208 }
 209
 210 /*
 211  * GEM ioctls.
 212  */
 213 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 214                             struct drm_file *filp)
 215 {
 216         struct amdgpu_device *adev = dev->dev_private;
 217         union drm_amdgpu_gem_create *args = data;
 218         uint64_t size = args->in.bo_size;
 219         struct drm_gem_object *gobj;
 220         uint32_t handle;
 221         bool kernel = false;
 222         int r;
 223
 224         /* reject invalid gem flags */
 225         if (args->in.domain_flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 226                                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
 227                                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 228                                       AMDGPU_GEM_CREATE_VRAM_CLEARED))
 229                 return -EINVAL;
 230
 231         /* reject invalid gem domains */
 232         if (args->in.domains & ~(AMDGPU_GEM_DOMAIN_CPU |
 233                                  AMDGPU_GEM_DOMAIN_GTT |
 234                                  AMDGPU_GEM_DOMAIN_VRAM |
 235                                  AMDGPU_GEM_DOMAIN_GDS |
 236                                  AMDGPU_GEM_DOMAIN_GWS |
 237                                  AMDGPU_GEM_DOMAIN_OA))
 238                 return -EINVAL;
 239
 240         /* create a gem object to contain this object in */
 241         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
 242             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
 243                 kernel = true;
 244                 if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS)
 245                         size = size << AMDGPU_GDS_SHIFT;
 246                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS)
 247                         size = size << AMDGPU_GWS_SHIFT;
 248                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA)
 249                         size = size << AMDGPU_OA_SHIFT;
 250                 else
 251                         return -EINVAL;
 252         }
 253         size = roundup(size, PAGE_SIZE);
 254
 255         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
 256                                      (u32)(0xffffffff & args->in.domains),
 257                                      args->in.domain_flags,
 258                                      kernel, &gobj);
 259         if (r)
 260                 return r;
 261
 262         r = drm_gem_handle_create(filp, gobj, &handle);
 263         /* drop reference from allocate - handle holds it now */
 264         drm_gem_object_put_unlocked(gobj);
 265         if (r)
 266                 return r;
 267
 268         memset(args, 0, sizeof(*args));
 269         args->out.handle = handle;
 270         return 0;
 271 }
 272
 273 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
 274                              struct drm_file *filp)
 275 {
 276         struct amdgpu_device *adev = dev->dev_private;
 277         struct drm_amdgpu_gem_userptr *args = data;
 278         struct drm_gem_object *gobj;
 279         struct amdgpu_bo *bo;
 280         uint32_t handle;
 281         int r;
 282
 283         if (offset_in_page(args->addr | args->size))
 284                 return -EINVAL;
 285
 286         /* reject unknown flag values */
 287         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
 288             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
 289             AMDGPU_GEM_USERPTR_REGISTER))
 290                 return -EINVAL;
 291
 292         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
 293              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
 294
 295                 /* if we want to write to it we must install a MMU notifier */
 296                 return -EACCES;
 297         }
 298
 299         /* create a gem object to contain this object in */
 300         r = amdgpu_gem_object_create(adev, args->size, 0,
 301                                      AMDGPU_GEM_DOMAIN_CPU, 0,
 302                                      0, &gobj);
 303         if (r)
 304                 return r;
 305
 306         bo = gem_to_amdgpu_bo(gobj);
 307         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
 308         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
 309         r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
 310         if (r)
 311                 goto release_object;
 312
 313         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
 314                 r = amdgpu_mn_register(bo, args->addr);
 315                 if (r)
 316                         goto release_object;
 317         }
 318
 319         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
 320                 down_read(&current->mm->mmap_sem);
 321
 322                 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
 323                                                  bo->tbo.ttm->pages);
 324                 if (r)
 325                         goto unlock_mmap_sem;
 326
 327                 r = amdgpu_bo_reserve(bo, true);
 328                 if (r)
 329                         goto free_pages;
 330
 331                 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
 332                 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 333                 amdgpu_bo_unreserve(bo);
 334                 if (r)
 335                         goto free_pages;
 336
 337                 up_read(&current->mm->mmap_sem);
 338         }
 339
 340         r = drm_gem_handle_create(filp, gobj, &handle);
 341         /* drop reference from allocate - handle holds it now */
 342         drm_gem_object_put_unlocked(gobj);
 343         if (r)
 344                 return r;
 345
 346         args->handle = handle;
 347         return 0;
 348
 349 free_pages:
 350         release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages, false);
 351
 352 unlock_mmap_sem:
 353         up_read(&current->mm->mmap_sem);
 354
 355 release_object:
 356         drm_gem_object_put_unlocked(gobj);
 357
 358         return r;
 359 }
 360
 361 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
 362                           struct drm_device *dev,
 363                           uint32_t handle, uint64_t *offset_p)
 364 {
 365         struct drm_gem_object *gobj;
 366         struct amdgpu_bo *robj;
 367
 368         gobj = drm_gem_object_lookup(filp, handle);
 369         if (gobj == NULL) {
 370                 return -ENOENT;
 371         }
 372         robj = gem_to_amdgpu_bo(gobj);
 373         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
 374             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
 375                 drm_gem_object_put_unlocked(gobj);
 376                 return -EPERM;
 377         }
 378         *offset_p = amdgpu_bo_mmap_offset(robj);
 379         drm_gem_object_put_unlocked(gobj);
 380         return 0;
 381 }
 382
 383 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
 384                           struct drm_file *filp)
 385 {
 386         union drm_amdgpu_gem_mmap *args = data;
 387         uint32_t handle = args->in.handle;
 388         memset(args, 0, sizeof(*args));
 389         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
 390 }
 391
 392 /**
 393  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
 394  *
 395  * @timeout_ns: timeout in ns
 396  *
 397  * Calculate the timeout in jiffies from an absolute timeout in ns.
 398  */
 399 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
 400 {
 401         unsigned long timeout_jiffies;
 402         ktime_t timeout;
 403
 404         /* clamp timeout if it's to large */
 405         if (((int64_t)timeout_ns) < 0)
 406                 return MAX_SCHEDULE_TIMEOUT;
 407
 408         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
 409         if (ktime_to_ns(timeout) < 0)
 410                 return 0;
 411
 412         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
 413         /*  clamp timeout to avoid unsigned-> signed overflow */
 414         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
 415                 return MAX_SCHEDULE_TIMEOUT - 1;
 416
 417         return timeout_jiffies;
 418 }
 419
 420 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 421                               struct drm_file *filp)
 422 {
 423         union drm_amdgpu_gem_wait_idle *args = data;
 424         struct drm_gem_object *gobj;
 425         struct amdgpu_bo *robj;
 426         uint32_t handle = args->in.handle;
 427         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
 428         int r = 0;
 429         long ret;
 430
 431         gobj = drm_gem_object_lookup(filp, handle);
 432         if (gobj == NULL) {
 433                 return -ENOENT;
 434         }
 435         robj = gem_to_amdgpu_bo(gobj);
 436         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
 437                                                   timeout);
 438
 439         /* ret == 0 means not signaled,
 440          * ret > 0 means signaled
 441          * ret < 0 means interrupted before timeout
 442          */
 443         if (ret >= 0) {
 444                 memset(args, 0, sizeof(*args));
 445                 args->out.status = (ret == 0);
 446         } else
 447                 r = ret;
 448
 449         drm_gem_object_put_unlocked(gobj);
 450         return r;
 451 }
 452
 453 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
 454                                 struct drm_file *filp)
 455 {
 456         struct drm_amdgpu_gem_metadata *args = data;
 457         struct drm_gem_object *gobj;
 458         struct amdgpu_bo *robj;
 459         int r = -1;
 460
 461         DRM_DEBUG("%d \n", args->handle);
 462         gobj = drm_gem_object_lookup(filp, args->handle);
 463         if (gobj == NULL)
 464                 return -ENOENT;
 465         robj = gem_to_amdgpu_bo(gobj);
 466
 467         r = amdgpu_bo_reserve(robj, false);
 468         if (unlikely(r != 0))
 469                 goto out;
 470
 471         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
 472                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
 473                 r = amdgpu_bo_get_metadata(robj, args->data.data,
 474                                            sizeof(args->data.data),
 475                                            &args->data.data_size_bytes,
 476                                            &args->data.flags);
 477         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
 478                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
 479                         r = -EINVAL;
 480                         goto unreserve;
 481                 }
 482                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
 483                 if (!r)
 484                         r = amdgpu_bo_set_metadata(robj, args->data.data,
 485                                                    args->data.data_size_bytes,
 486                                                    args->data.flags);
 487         }
 488
 489 unreserve:
 490         amdgpu_bo_unreserve(robj);
 491 out:
 492         drm_gem_object_put_unlocked(gobj);
 493         return r;
 494 }
 495
 496 /**
 497  * amdgpu_gem_va_update_vm -update the bo_va in its VM
 498  *
 499  * @adev: amdgpu_device pointer
 500  * @vm: vm to update
 501  * @bo_va: bo_va to update
 502  * @list: validation list
 503  * @operation: map, unmap or clear
 504  *
 505  * Update the bo_va directly after setting its address. Errors are not
 506  * vital here, so they are not reported back to userspace.
 507  */
 508 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
 509                                     struct amdgpu_vm *vm,
 510                                     struct amdgpu_bo_va *bo_va,
 511                                     struct list_head *list,
 512                                     uint32_t operation)
 513 {
 514         int r = -ERESTARTSYS;
 515
 516         if (!amdgpu_gem_vm_ready(adev, vm, list))
 517                 goto error;
 518
 519         r = amdgpu_vm_update_directories(adev, vm);
 520         if (r)
 521                 goto error;
 522
 523         r = amdgpu_vm_clear_freed(adev, vm, NULL);
 524         if (r)
 525                 goto error;
 526
 527         if (operation == AMDGPU_VA_OP_MAP ||
 528             operation == AMDGPU_VA_OP_REPLACE)
 529                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 530
 531 error:
 532         if (r && r != -ERESTARTSYS)
 533                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
 534 }
 535
 536 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 537                           struct drm_file *filp)
 538 {
 539         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
 540                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
 541                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
 542         const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
 543                 AMDGPU_VM_PAGE_PRT;
 544
 545         struct drm_amdgpu_gem_va *args = data;
 546         struct drm_gem_object *gobj;
 547         struct amdgpu_device *adev = dev->dev_private;
 548         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 549         struct amdgpu_bo *abo;
 550         struct amdgpu_bo_va *bo_va;
 551         struct amdgpu_bo_list_entry vm_pd;
 552         struct ttm_validate_buffer tv;
 553         struct ww_acquire_ctx ticket;
 554         struct list_head list;
 555         uint64_t va_flags;
 556         int r = 0;
 557
 558         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
 559                 dev_err(&dev->pdev->dev,
 560                         "va_address 0x%lX is in reserved area 0x%X\n",
 561                         (unsigned long)args->va_address,
 562                         AMDGPU_VA_RESERVED_SIZE);
 563                 return -EINVAL;
 564         }
 565
 566         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
 567                 dev_err(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
 568                         args->flags);
 569                 return -EINVAL;
 570         }
 571
 572         switch (args->operation) {
 573         case AMDGPU_VA_OP_MAP:
 574         case AMDGPU_VA_OP_UNMAP:
 575         case AMDGPU_VA_OP_CLEAR:
 576         case AMDGPU_VA_OP_REPLACE:
 577                 break;
 578         default:
 579                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 580                         args->operation);
 581                 return -EINVAL;
 582         }
 583         if ((args->operation == AMDGPU_VA_OP_MAP) ||
 584             (args->operation == AMDGPU_VA_OP_REPLACE)) {
 585                 if (amdgpu_kms_vram_lost(adev, fpriv))
 586                         return -ENODEV;
 587         }
 588
 589         INIT_LIST_HEAD(&list);
 590         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
 591             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
 592                 gobj = drm_gem_object_lookup(filp, args->handle);
 593                 if (gobj == NULL)
 594                         return -ENOENT;
 595                 abo = gem_to_amdgpu_bo(gobj);
 596                 tv.bo = &abo->tbo;
 597                 tv.shared = false;
 598                 list_add(&tv.head, &list);
 599         } else {
 600                 gobj = NULL;
 601                 abo = NULL;
 602         }
 603
 604         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
 605
 606         r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
 607         if (r)
 608                 goto error_unref;
 609
 610         if (abo) {
 611                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
 612                 if (!bo_va) {
 613                         r = -ENOENT;
 614                         goto error_backoff;
 615                 }
 616         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
 617                 bo_va = fpriv->prt_va;
 618         } else {
 619                 bo_va = NULL;
 620         }
 621
 622         switch (args->operation) {
 623         case AMDGPU_VA_OP_MAP:
 624                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
 625                                         args->map_size);
 626                 if (r)
 627                         goto error_backoff;
 628
 629                 va_flags = amdgpu_vm_get_pte_flags(adev, args->flags);
 630                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
 631                                      args->offset_in_bo, args->map_size,
 632                                      va_flags);
 633                 break;
 634         case AMDGPU_VA_OP_UNMAP:
 635                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
 636                 break;
 637
 638         case AMDGPU_VA_OP_CLEAR:
 639                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
 640                                                 args->va_address,
 641                                                 args->map_size);
 642                 break;
 643         case AMDGPU_VA_OP_REPLACE:
 644                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
 645                                         args->map_size);
 646                 if (r)
 647                         goto error_backoff;
 648
 649                 va_flags = amdgpu_vm_get_pte_flags(adev, args->flags);
 650                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
 651                                              args->offset_in_bo, args->map_size,
 652                                              va_flags);
 653                 break;
 654         default:
 655                 break;
 656         }
 657         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
 658                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, &list,
 659                                         args->operation);
 660
 661 error_backoff:
 662         ttm_eu_backoff_reservation(&ticket, &list);
 663
 664 error_unref:
 665         drm_gem_object_put_unlocked(gobj);
 666         return r;
 667 }
 668
 669 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
 670                         struct drm_file *filp)
 671 {
 672         struct drm_amdgpu_gem_op *args = data;
 673         struct drm_gem_object *gobj;
 674         struct amdgpu_bo *robj;
 675         int r;
 676
 677         gobj = drm_gem_object_lookup(filp, args->handle);
 678         if (gobj == NULL) {
 679                 return -ENOENT;
 680         }
 681         robj = gem_to_amdgpu_bo(gobj);
 682
 683         r = amdgpu_bo_reserve(robj, false);
 684         if (unlikely(r))
 685                 goto out;
 686
 687         switch (args->op) {
 688         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
 689                 struct drm_amdgpu_gem_create_in info;
 690                 void __user *out = u64_to_user_ptr(args->value);
 691
 692                 info.bo_size = robj->gem_base.size;
 693                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
 694                 info.domains = robj->preferred_domains;
 695                 info.domain_flags = robj->flags;
 696                 amdgpu_bo_unreserve(robj);
 697                 if (copy_to_user(out, &info, sizeof(info)))
 698                         r = -EFAULT;
 699                 break;
 700         }
 701         case AMDGPU_GEM_OP_SET_PLACEMENT:
 702                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
 703                         r = -EINVAL;
 704                         amdgpu_bo_unreserve(robj);
 705                         break;
 706                 }
 707                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
 708                         r = -EPERM;
 709                         amdgpu_bo_unreserve(robj);
 710                         break;
 711                 }
 712                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
 713                                                         AMDGPU_GEM_DOMAIN_GTT |
 714                                                         AMDGPU_GEM_DOMAIN_CPU);
 715                 robj->allowed_domains = robj->preferred_domains;
 716                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 717                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 718
 719                 amdgpu_bo_unreserve(robj);
 720                 break;
 721         default:
 722                 amdgpu_bo_unreserve(robj);
 723                 r = -EINVAL;
 724         }
 725
 726 out:
 727         drm_gem_object_put_unlocked(gobj);
 728         return r;
 729 }
 730
 731 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
 732                             struct drm_device *dev,
 733                             struct drm_mode_create_dumb *args)
 734 {
 735         struct amdgpu_device *adev = dev->dev_private;
 736         struct drm_gem_object *gobj;
 737         uint32_t handle;
 738         int r;
 739
 740         args->pitch = amdgpu_align_pitch(adev, args->width,
 741                                          DIV_ROUND_UP(args->bpp, 8), 0);
 742         args->size = (u64)args->pitch * args->height;
 743         args->size = ALIGN(args->size, PAGE_SIZE);
 744
 745         r = amdgpu_gem_object_create(adev, args->size, 0,
 746                                      AMDGPU_GEM_DOMAIN_VRAM,
 747                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 748                                      ttm_bo_type_device,
 749                                      &gobj);
 750         if (r)
 751                 return -ENOMEM;
 752
 753         r = drm_gem_handle_create(file_priv, gobj, &handle);
 754         /* drop reference from allocate - handle holds it now */
 755         drm_gem_object_put_unlocked(gobj);
 756         if (r) {
 757                 return r;
 758         }
 759         args->handle = handle;
 760         return 0;
 761 }
 762
 763 #if defined(CONFIG_DEBUG_FS)
 764 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
 765 {
 766         struct drm_gem_object *gobj = ptr;
 767         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
 768         struct seq_file *m = data;
 769
 770         unsigned domain;
 771         const char *placement;
 772         unsigned pin_count;
 773         uint64_t offset;
 774
 775         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
 776         switch (domain) {
 777         case AMDGPU_GEM_DOMAIN_VRAM:
 778                 placement = "VRAM";
 779                 break;
 780         case AMDGPU_GEM_DOMAIN_GTT:
 781                 placement = " GTT";
 782                 break;
 783         case AMDGPU_GEM_DOMAIN_CPU:
 784         default:
 785                 placement = " CPU";
 786                 break;
 787         }
 788         seq_printf(m, "\t0x%08x: %12ld byte %s",
 789                    id, amdgpu_bo_size(bo), placement);
 790
 791         offset = READ_ONCE(bo->tbo.mem.start);
 792         if (offset != AMDGPU_BO_INVALID_OFFSET)
 793                 seq_printf(m, " @ 0x%010Lx", offset);
 794
 795         pin_count = READ_ONCE(bo->pin_count);
 796         if (pin_count)
 797                 seq_printf(m, " pin count %d", pin_count);
 798         seq_printf(m, "\n");
 799
 800         return 0;
 801 }
 802
 803 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
 804 {
 805         struct drm_info_node *node = (struct drm_info_node *)m->private;
 806         struct drm_device *dev = node->minor->dev;
 807         struct drm_file *file;
 808         int r;
 809
 810         r = mutex_lock_interruptible(&dev->filelist_mutex);
 811         if (r)
 812                 return r;
 813
 814         list_for_each_entry(file, &dev->filelist, lhead) {
 815                 struct task_struct *task;
 816
 817                 /*
 818                  * Although we have a valid reference on file->pid, that does
 819                  * not guarantee that the task_struct who called get_pid() is
 820                  * still alive (e.g. get_pid(current) => fork() => exit()).
 821                  * Therefore, we need to protect this ->comm access using RCU.
 822                  */
 823                 rcu_read_lock();
 824                 task = pid_task(file->pid, PIDTYPE_PID);
 825                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
 826                            task ? task->comm : "<unknown>");
 827                 rcu_read_unlock();
 828
 829                 spin_lock(&file->table_lock);
 830                 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
 831                 spin_unlock(&file->table_lock);
 832         }
 833
 834         mutex_unlock(&dev->filelist_mutex);
 835         return 0;
 836 }
 837
 838 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
 839         {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
 840 };
 841 #endif
 842
 843 int amdgpu_gem_debugfs_init(struct amdgpu_device *adev)
 844 {
 845 #if defined(CONFIG_DEBUG_FS)
 846         return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
 847 #endif
 848         return 0;
 849 }