drivers/gpu/drm/radeon/radeon_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 <drm/drmP.h>
  29 #include <drm/radeon_drm.h>
  30 #include "radeon.h"
  31
  32 void radeon_gem_object_free(struct drm_gem_object *gobj)
  33 {
  34         struct radeon_bo *robj = gem_to_radeon_bo(gobj);
  35
  36         if (robj) {
  37                 if (robj->gem_base.import_attach)
  38                         drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
  39                 radeon_mn_unregister(robj);
  40                 radeon_bo_unref(&robj);
  41         }
  42 }
  43
  44 int radeon_gem_object_create(struct radeon_device *rdev, unsigned long size,
  45                                 int alignment, int initial_domain,
  46                                 u32 flags, bool kernel,
  47                                 struct drm_gem_object **obj)
  48 {
  49         struct radeon_bo *robj;
  50         unsigned long max_size;
  51         int r;
  52
  53         *obj = NULL;
  54         /* At least align on page size */
  55         if (alignment < PAGE_SIZE) {
  56                 alignment = PAGE_SIZE;
  57         }
  58
  59         /* Maximum bo size is the unpinned gtt size since we use the gtt to
  60          * handle vram to system pool migrations.
  61          */
  62         max_size = rdev->mc.gtt_size - rdev->gart_pin_size;
  63         if (size > max_size) {
  64                 DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n",
  65                           size >> 20, max_size >> 20);
  66                 return -ENOMEM;
  67         }
  68
  69 retry:
  70         r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain,
  71                              flags, NULL, NULL, &robj);
  72         if (r) {
  73                 if (r != -ERESTARTSYS) {
  74                         if (initial_domain == RADEON_GEM_DOMAIN_VRAM) {
  75                                 initial_domain |= RADEON_GEM_DOMAIN_GTT;
  76                                 goto retry;
  77                         }
  78                         DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
  79                                   size, initial_domain, alignment, r);
  80                 }
  81                 return r;
  82         }
  83         *obj = &robj->gem_base;
  84         robj->pid = task_pid_nr(current);
  85
  86         mutex_lock(&rdev->gem.mutex);
  87         list_add_tail(&robj->list, &rdev->gem.objects);
  88         mutex_unlock(&rdev->gem.mutex);
  89
  90         return 0;
  91 }
  92
  93 static int radeon_gem_set_domain(struct drm_gem_object *gobj,
  94                           uint32_t rdomain, uint32_t wdomain)
  95 {
  96         struct radeon_bo *robj;
  97         uint32_t domain;
  98         long r;
  99
 100         /* FIXME: reeimplement */
 101         robj = gem_to_radeon_bo(gobj);
 102         /* work out where to validate the buffer to */
 103         domain = wdomain;
 104         if (!domain) {
 105                 domain = rdomain;
 106         }
 107         if (!domain) {
 108                 /* Do nothings */
 109                 pr_warn("Set domain without domain !\n");
 110                 return 0;
 111         }
 112         if (domain == RADEON_GEM_DOMAIN_CPU) {
 113                 /* Asking for cpu access wait for object idle */
 114                 r = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, 30 * HZ);
 115                 if (!r)
 116                         r = -EBUSY;
 117
 118                 if (r < 0 && r != -EINTR) {
 119                         pr_err("Failed to wait for object: %li\n", r);
 120                         return r;
 121                 }
 122         }
 123         if (domain == RADEON_GEM_DOMAIN_VRAM && robj->prime_shared_count) {
 124                 /* A BO that is associated with a dma-buf cannot be sensibly migrated to VRAM */
 125                 return -EINVAL;
 126         }
 127         return 0;
 128 }
 129
 130 int radeon_gem_init(struct radeon_device *rdev)
 131 {
 132         INIT_LIST_HEAD(&rdev->gem.objects);
 133         return 0;
 134 }
 135
 136 void radeon_gem_fini(struct radeon_device *rdev)
 137 {
 138         radeon_bo_force_delete(rdev);
 139 }
 140
 141 /*
 142  * Call from drm_gem_handle_create which appear in both new and open ioctl
 143  * case.
 144  */
 145 int radeon_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 146 {
 147         struct radeon_bo *rbo = gem_to_radeon_bo(obj);
 148         struct radeon_device *rdev = rbo->rdev;
 149         struct radeon_fpriv *fpriv = file_priv->driver_priv;
 150         struct radeon_vm *vm = &fpriv->vm;
 151         struct radeon_bo_va *bo_va;
 152         int r;
 153
 154         if ((rdev->family < CHIP_CAYMAN) ||
 155             (!rdev->accel_working)) {
 156                 return 0;
 157         }
 158
 159         r = radeon_bo_reserve(rbo, false);
 160         if (r) {
 161                 return r;
 162         }
 163
 164         bo_va = radeon_vm_bo_find(vm, rbo);
 165         if (!bo_va) {
 166                 bo_va = radeon_vm_bo_add(rdev, vm, rbo);
 167         } else {
 168                 ++bo_va->ref_count;
 169         }
 170         radeon_bo_unreserve(rbo);
 171
 172         return 0;
 173 }
 174
 175 void radeon_gem_object_close(struct drm_gem_object *obj,
 176                              struct drm_file *file_priv)
 177 {
 178         struct radeon_bo *rbo = gem_to_radeon_bo(obj);
 179         struct radeon_device *rdev = rbo->rdev;
 180         struct radeon_fpriv *fpriv = file_priv->driver_priv;
 181         struct radeon_vm *vm = &fpriv->vm;
 182         struct radeon_bo_va *bo_va;
 183         int r;
 184
 185         if ((rdev->family < CHIP_CAYMAN) ||
 186             (!rdev->accel_working)) {
 187                 return;
 188         }
 189
 190         r = radeon_bo_reserve(rbo, true);
 191         if (r) {
 192                 dev_err(rdev->dev, "leaking bo va because "
 193                         "we fail to reserve bo (%d)\n", r);
 194                 return;
 195         }
 196         bo_va = radeon_vm_bo_find(vm, rbo);
 197         if (bo_va) {
 198                 if (--bo_va->ref_count == 0) {
 199                         radeon_vm_bo_rmv(rdev, bo_va);
 200                 }
 201         }
 202         radeon_bo_unreserve(rbo);
 203 }
 204
 205 static int radeon_gem_handle_lockup(struct radeon_device *rdev, int r)
 206 {
 207         if (r == -EDEADLK) {
 208                 r = radeon_gpu_reset(rdev);
 209                 if (!r)
 210                         r = -EAGAIN;
 211         }
 212         return r;
 213 }
 214
 215 /*
 216  * GEM ioctls.
 217  */
 218 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 219                           struct drm_file *filp)
 220 {
 221         struct radeon_device *rdev = dev->dev_private;
 222         struct drm_radeon_gem_info *args = data;
 223         struct ttm_mem_type_manager *man;
 224
 225         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 226
 227         args->vram_size = (u64)man->size << PAGE_SHIFT;
 228         args->vram_visible = rdev->mc.visible_vram_size;
 229         args->vram_visible -= rdev->vram_pin_size;
 230         args->gart_size = rdev->mc.gtt_size;
 231         args->gart_size -= rdev->gart_pin_size;
 232
 233         return 0;
 234 }
 235
 236 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 237                            struct drm_file *filp)
 238 {
 239         /* TODO: implement */
 240         DRM_ERROR("unimplemented %s\n", __func__);
 241         return -ENOSYS;
 242 }
 243
 244 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 245                             struct drm_file *filp)
 246 {
 247         /* TODO: implement */
 248         DRM_ERROR("unimplemented %s\n", __func__);
 249         return -ENOSYS;
 250 }
 251
 252 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 253                             struct drm_file *filp)
 254 {
 255         struct radeon_device *rdev = dev->dev_private;
 256         struct drm_radeon_gem_create *args = data;
 257         struct drm_gem_object *gobj;
 258         uint32_t handle;
 259         int r;
 260
 261         down_read(&rdev->exclusive_lock);
 262         /* create a gem object to contain this object in */
 263         args->size = roundup(args->size, PAGE_SIZE);
 264         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 265                                      args->initial_domain, args->flags,
 266                                      false, &gobj);
 267         if (r) {
 268                 up_read(&rdev->exclusive_lock);
 269                 r = radeon_gem_handle_lockup(rdev, r);
 270                 return r;
 271         }
 272         r = drm_gem_handle_create(filp, gobj, &handle);
 273         /* drop reference from allocate - handle holds it now */
 274         drm_gem_object_unreference_unlocked(gobj);
 275         if (r) {
 276                 up_read(&rdev->exclusive_lock);
 277                 r = radeon_gem_handle_lockup(rdev, r);
 278                 return r;
 279         }
 280         args->handle = handle;
 281         up_read(&rdev->exclusive_lock);
 282         return 0;
 283 }
 284
 285 int radeon_gem_userptr_ioctl(struct drm_device *dev, void *data,
 286                              struct drm_file *filp)
 287 {
 288         struct radeon_device *rdev = dev->dev_private;
 289         struct drm_radeon_gem_userptr *args = data;
 290         struct drm_gem_object *gobj;
 291         struct radeon_bo *bo;
 292         uint32_t handle;
 293         int r;
 294
 295         if (offset_in_page(args->addr | args->size))
 296                 return -EINVAL;
 297
 298         /* reject unknown flag values */
 299         if (args->flags & ~(RADEON_GEM_USERPTR_READONLY |
 300             RADEON_GEM_USERPTR_ANONONLY | RADEON_GEM_USERPTR_VALIDATE |
 301             RADEON_GEM_USERPTR_REGISTER))
 302                 return -EINVAL;
 303
 304         if (args->flags & RADEON_GEM_USERPTR_READONLY) {
 305                 /* readonly pages not tested on older hardware */
 306                 if (rdev->family < CHIP_R600)
 307                         return -EINVAL;
 308
 309         } else if (!(args->flags & RADEON_GEM_USERPTR_ANONONLY) ||
 310                    !(args->flags & RADEON_GEM_USERPTR_REGISTER)) {
 311
 312                 /* if we want to write to it we must require anonymous
 313                    memory and install a MMU notifier */
 314                 return -EACCES;
 315         }
 316
 317         down_read(&rdev->exclusive_lock);
 318
 319         /* create a gem object to contain this object in */
 320         r = radeon_gem_object_create(rdev, args->size, 0,
 321                                      RADEON_GEM_DOMAIN_CPU, 0,
 322                                      false, &gobj);
 323         if (r)
 324                 goto handle_lockup;
 325
 326         bo = gem_to_radeon_bo(gobj);
 327         r = radeon_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
 328         if (r)
 329                 goto release_object;
 330
 331         if (args->flags & RADEON_GEM_USERPTR_REGISTER) {
 332                 r = radeon_mn_register(bo, args->addr);
 333                 if (r)
 334                         goto release_object;
 335         }
 336
 337         if (args->flags & RADEON_GEM_USERPTR_VALIDATE) {
 338                 down_read(&current->mm->mmap_sem);
 339                 r = radeon_bo_reserve(bo, true);
 340                 if (r) {
 341                         up_read(&current->mm->mmap_sem);
 342                         goto release_object;
 343                 }
 344
 345                 radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_GTT);
 346                 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 347                 radeon_bo_unreserve(bo);
 348                 up_read(&current->mm->mmap_sem);
 349                 if (r)
 350                         goto release_object;
 351         }
 352
 353         r = drm_gem_handle_create(filp, gobj, &handle);
 354         /* drop reference from allocate - handle holds it now */
 355         drm_gem_object_unreference_unlocked(gobj);
 356         if (r)
 357                 goto handle_lockup;
 358
 359         args->handle = handle;
 360         up_read(&rdev->exclusive_lock);
 361         return 0;
 362
 363 release_object:
 364         drm_gem_object_unreference_unlocked(gobj);
 365
 366 handle_lockup:
 367         up_read(&rdev->exclusive_lock);
 368         r = radeon_gem_handle_lockup(rdev, r);
 369
 370         return r;
 371 }
 372
 373 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 374                                 struct drm_file *filp)
 375 {
 376         /* transition the BO to a domain -
 377          * just validate the BO into a certain domain */
 378         struct radeon_device *rdev = dev->dev_private;
 379         struct drm_radeon_gem_set_domain *args = data;
 380         struct drm_gem_object *gobj;
 381         struct radeon_bo *robj;
 382         int r;
 383
 384         /* for now if someone requests domain CPU -
 385          * just make sure the buffer is finished with */
 386         down_read(&rdev->exclusive_lock);
 387
 388         /* just do a BO wait for now */
 389         gobj = drm_gem_object_lookup(filp, args->handle);
 390         if (gobj == NULL) {
 391                 up_read(&rdev->exclusive_lock);
 392                 return -ENOENT;
 393         }
 394         robj = gem_to_radeon_bo(gobj);
 395
 396         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 397
 398         drm_gem_object_unreference_unlocked(gobj);
 399         up_read(&rdev->exclusive_lock);
 400         r = radeon_gem_handle_lockup(robj->rdev, r);
 401         return r;
 402 }
 403
 404 int radeon_mode_dumb_mmap(struct drm_file *filp,
 405                           struct drm_device *dev,
 406                           uint32_t handle, uint64_t *offset_p)
 407 {
 408         struct drm_gem_object *gobj;
 409         struct radeon_bo *robj;
 410
 411         gobj = drm_gem_object_lookup(filp, handle);
 412         if (gobj == NULL) {
 413                 return -ENOENT;
 414         }
 415         robj = gem_to_radeon_bo(gobj);
 416         if (radeon_ttm_tt_has_userptr(robj->tbo.ttm)) {
 417                 drm_gem_object_unreference_unlocked(gobj);
 418                 return -EPERM;
 419         }
 420         *offset_p = radeon_bo_mmap_offset(robj);
 421         drm_gem_object_unreference_unlocked(gobj);
 422         return 0;
 423 }
 424
 425 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 426                           struct drm_file *filp)
 427 {
 428         struct drm_radeon_gem_mmap *args = data;
 429
 430         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 431 }
 432
 433 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 434                           struct drm_file *filp)
 435 {
 436         struct drm_radeon_gem_busy *args = data;
 437         struct drm_gem_object *gobj;
 438         struct radeon_bo *robj;
 439         int r;
 440         uint32_t cur_placement = 0;
 441
 442         gobj = drm_gem_object_lookup(filp, args->handle);
 443         if (gobj == NULL) {
 444                 return -ENOENT;
 445         }
 446         robj = gem_to_radeon_bo(gobj);
 447
 448         r = reservation_object_test_signaled_rcu(robj->tbo.resv, true);
 449         if (r == 0)
 450                 r = -EBUSY;
 451         else
 452                 r = 0;
 453
 454         cur_placement = ACCESS_ONCE(robj->tbo.mem.mem_type);
 455         args->domain = radeon_mem_type_to_domain(cur_placement);
 456         drm_gem_object_unreference_unlocked(gobj);
 457         return r;
 458 }
 459
 460 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 461                               struct drm_file *filp)
 462 {
 463         struct radeon_device *rdev = dev->dev_private;
 464         struct drm_radeon_gem_wait_idle *args = data;
 465         struct drm_gem_object *gobj;
 466         struct radeon_bo *robj;
 467         int r = 0;
 468         uint32_t cur_placement = 0;
 469         long ret;
 470
 471         gobj = drm_gem_object_lookup(filp, args->handle);
 472         if (gobj == NULL) {
 473                 return -ENOENT;
 474         }
 475         robj = gem_to_radeon_bo(gobj);
 476
 477         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, 30 * HZ);
 478         if (ret == 0)
 479                 r = -EBUSY;
 480         else if (ret < 0)
 481                 r = ret;
 482
 483         /* Flush HDP cache via MMIO if necessary */
 484         cur_placement = ACCESS_ONCE(robj->tbo.mem.mem_type);
 485         if (rdev->asic->mmio_hdp_flush &&
 486             radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)
 487                 robj->rdev->asic->mmio_hdp_flush(rdev);
 488         drm_gem_object_unreference_unlocked(gobj);
 489         r = radeon_gem_handle_lockup(rdev, r);
 490         return r;
 491 }
 492
 493 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 494                                 struct drm_file *filp)
 495 {
 496         struct drm_radeon_gem_set_tiling *args = data;
 497         struct drm_gem_object *gobj;
 498         struct radeon_bo *robj;
 499         int r = 0;
 500
 501         DRM_DEBUG("%d \n", args->handle);
 502         gobj = drm_gem_object_lookup(filp, args->handle);
 503         if (gobj == NULL)
 504                 return -ENOENT;
 505         robj = gem_to_radeon_bo(gobj);
 506         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 507         drm_gem_object_unreference_unlocked(gobj);
 508         return r;
 509 }
 510
 511 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 512                                 struct drm_file *filp)
 513 {
 514         struct drm_radeon_gem_get_tiling *args = data;
 515         struct drm_gem_object *gobj;
 516         struct radeon_bo *rbo;
 517         int r = 0;
 518
 519         DRM_DEBUG("\n");
 520         gobj = drm_gem_object_lookup(filp, args->handle);
 521         if (gobj == NULL)
 522                 return -ENOENT;
 523         rbo = gem_to_radeon_bo(gobj);
 524         r = radeon_bo_reserve(rbo, false);
 525         if (unlikely(r != 0))
 526                 goto out;
 527         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 528         radeon_bo_unreserve(rbo);
 529 out:
 530         drm_gem_object_unreference_unlocked(gobj);
 531         return r;
 532 }
 533
 534 /**
 535  * radeon_gem_va_update_vm -update the bo_va in its VM
 536  *
 537  * @rdev: radeon_device pointer
 538  * @bo_va: bo_va to update
 539  *
 540  * Update the bo_va directly after setting it's address. Errors are not
 541  * vital here, so they are not reported back to userspace.
 542  */
 543 static void radeon_gem_va_update_vm(struct radeon_device *rdev,
 544                                     struct radeon_bo_va *bo_va)
 545 {
 546         struct ttm_validate_buffer tv, *entry;
 547         struct radeon_bo_list *vm_bos;
 548         struct ww_acquire_ctx ticket;
 549         struct list_head list;
 550         unsigned domain;
 551         int r;
 552
 553         INIT_LIST_HEAD(&list);
 554
 555         tv.bo = &bo_va->bo->tbo;
 556         tv.shared = true;
 557         list_add(&tv.head, &list);
 558
 559         vm_bos = radeon_vm_get_bos(rdev, bo_va->vm, &list);
 560         if (!vm_bos)
 561                 return;
 562
 563         r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
 564         if (r)
 565                 goto error_free;
 566
 567         list_for_each_entry(entry, &list, head) {
 568                 domain = radeon_mem_type_to_domain(entry->bo->mem.mem_type);
 569                 /* if anything is swapped out don't swap it in here,
 570                    just abort and wait for the next CS */
 571                 if (domain == RADEON_GEM_DOMAIN_CPU)
 572                         goto error_unreserve;
 573         }
 574
 575         mutex_lock(&bo_va->vm->mutex);
 576         r = radeon_vm_clear_freed(rdev, bo_va->vm);
 577         if (r)
 578                 goto error_unlock;
 579
 580         if (bo_va->it.start)
 581                 r = radeon_vm_bo_update(rdev, bo_va, &bo_va->bo->tbo.mem);
 582
 583 error_unlock:
 584         mutex_unlock(&bo_va->vm->mutex);
 585
 586 error_unreserve:
 587         ttm_eu_backoff_reservation(&ticket, &list);
 588
 589 error_free:
 590         kvfree(vm_bos);
 591
 592         if (r && r != -ERESTARTSYS)
 593                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
 594 }
 595
 596 int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
 597                           struct drm_file *filp)
 598 {
 599         struct drm_radeon_gem_va *args = data;
 600         struct drm_gem_object *gobj;
 601         struct radeon_device *rdev = dev->dev_private;
 602         struct radeon_fpriv *fpriv = filp->driver_priv;
 603         struct radeon_bo *rbo;
 604         struct radeon_bo_va *bo_va;
 605         u32 invalid_flags;
 606         int r = 0;
 607
 608         if (!rdev->vm_manager.enabled) {
 609                 args->operation = RADEON_VA_RESULT_ERROR;
 610                 return -ENOTTY;
 611         }
 612
 613         /* !! DONT REMOVE !!
 614          * We don't support vm_id yet, to be sure we don't have have broken
 615          * userspace, reject anyone trying to use non 0 value thus moving
 616          * forward we can use those fields without breaking existant userspace
 617          */
 618         if (args->vm_id) {
 619                 args->operation = RADEON_VA_RESULT_ERROR;
 620                 return -EINVAL;
 621         }
 622
 623         if (args->offset < RADEON_VA_RESERVED_SIZE) {
 624                 dev_err(&dev->pdev->dev,
 625                         "offset 0x%lX is in reserved area 0x%X\n",
 626                         (unsigned long)args->offset,
 627                         RADEON_VA_RESERVED_SIZE);
 628                 args->operation = RADEON_VA_RESULT_ERROR;
 629                 return -EINVAL;
 630         }
 631
 632         /* don't remove, we need to enforce userspace to set the snooped flag
 633          * otherwise we will endup with broken userspace and we won't be able
 634          * to enable this feature without adding new interface
 635          */
 636         invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
 637         if ((args->flags & invalid_flags)) {
 638                 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
 639                         args->flags, invalid_flags);
 640                 args->operation = RADEON_VA_RESULT_ERROR;
 641                 return -EINVAL;
 642         }
 643
 644         switch (args->operation) {
 645         case RADEON_VA_MAP:
 646         case RADEON_VA_UNMAP:
 647                 break;
 648         default:
 649                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 650                         args->operation);
 651                 args->operation = RADEON_VA_RESULT_ERROR;
 652                 return -EINVAL;
 653         }
 654
 655         gobj = drm_gem_object_lookup(filp, args->handle);
 656         if (gobj == NULL) {
 657                 args->operation = RADEON_VA_RESULT_ERROR;
 658                 return -ENOENT;
 659         }
 660         rbo = gem_to_radeon_bo(gobj);
 661         r = radeon_bo_reserve(rbo, false);
 662         if (r) {
 663                 args->operation = RADEON_VA_RESULT_ERROR;
 664                 drm_gem_object_unreference_unlocked(gobj);
 665                 return r;
 666         }
 667         bo_va = radeon_vm_bo_find(&fpriv->vm, rbo);
 668         if (!bo_va) {
 669                 args->operation = RADEON_VA_RESULT_ERROR;
 670                 radeon_bo_unreserve(rbo);
 671                 drm_gem_object_unreference_unlocked(gobj);
 672                 return -ENOENT;
 673         }
 674
 675         switch (args->operation) {
 676         case RADEON_VA_MAP:
 677                 if (bo_va->it.start) {
 678                         args->operation = RADEON_VA_RESULT_VA_EXIST;
 679                         args->offset = bo_va->it.start * RADEON_GPU_PAGE_SIZE;
 680                         radeon_bo_unreserve(rbo);
 681                         goto out;
 682                 }
 683                 r = radeon_vm_bo_set_addr(rdev, bo_va, args->offset, args->flags);
 684                 break;
 685         case RADEON_VA_UNMAP:
 686                 r = radeon_vm_bo_set_addr(rdev, bo_va, 0, 0);
 687                 break;
 688         default:
 689                 break;
 690         }
 691         if (!r)
 692                 radeon_gem_va_update_vm(rdev, bo_va);
 693         args->operation = RADEON_VA_RESULT_OK;
 694         if (r) {
 695                 args->operation = RADEON_VA_RESULT_ERROR;
 696         }
 697 out:
 698         drm_gem_object_unreference_unlocked(gobj);
 699         return r;
 700 }
 701
 702 int radeon_gem_op_ioctl(struct drm_device *dev, void *data,
 703                         struct drm_file *filp)
 704 {
 705         struct drm_radeon_gem_op *args = data;
 706         struct drm_gem_object *gobj;
 707         struct radeon_bo *robj;
 708         int r;
 709
 710         gobj = drm_gem_object_lookup(filp, args->handle);
 711         if (gobj == NULL) {
 712                 return -ENOENT;
 713         }
 714         robj = gem_to_radeon_bo(gobj);
 715
 716         r = -EPERM;
 717         if (radeon_ttm_tt_has_userptr(robj->tbo.ttm))
 718                 goto out;
 719
 720         r = radeon_bo_reserve(robj, false);
 721         if (unlikely(r))
 722                 goto out;
 723
 724         switch (args->op) {
 725         case RADEON_GEM_OP_GET_INITIAL_DOMAIN:
 726                 args->value = robj->initial_domain;
 727                 break;
 728         case RADEON_GEM_OP_SET_INITIAL_DOMAIN:
 729                 robj->initial_domain = args->value & (RADEON_GEM_DOMAIN_VRAM |
 730                                                       RADEON_GEM_DOMAIN_GTT |
 731                                                       RADEON_GEM_DOMAIN_CPU);
 732                 break;
 733         default:
 734                 r = -EINVAL;
 735         }
 736
 737         radeon_bo_unreserve(robj);
 738 out:
 739         drm_gem_object_unreference_unlocked(gobj);
 740         return r;
 741 }
 742
 743 int radeon_mode_dumb_create(struct drm_file *file_priv,
 744                             struct drm_device *dev,
 745                             struct drm_mode_create_dumb *args)
 746 {
 747         struct radeon_device *rdev = dev->dev_private;
 748         struct drm_gem_object *gobj;
 749         uint32_t handle;
 750         int r;
 751
 752         args->pitch = radeon_align_pitch(rdev, args->width,
 753                                          DIV_ROUND_UP(args->bpp, 8), 0);
 754         args->size = args->pitch * args->height;
 755         args->size = ALIGN(args->size, PAGE_SIZE);
 756
 757         r = radeon_gem_object_create(rdev, args->size, 0,
 758                                      RADEON_GEM_DOMAIN_VRAM, 0,
 759                                      false, &gobj);
 760         if (r)
 761                 return -ENOMEM;
 762
 763         r = drm_gem_handle_create(file_priv, gobj, &handle);
 764         /* drop reference from allocate - handle holds it now */
 765         drm_gem_object_unreference_unlocked(gobj);
 766         if (r) {
 767                 return r;
 768         }
 769         args->handle = handle;
 770         return 0;
 771 }
 772
 773 #if defined(CONFIG_DEBUG_FS)
 774 static int radeon_debugfs_gem_info(struct seq_file *m, void *data)
 775 {
 776         struct drm_info_node *node = (struct drm_info_node *)m->private;
 777         struct drm_device *dev = node->minor->dev;
 778         struct radeon_device *rdev = dev->dev_private;
 779         struct radeon_bo *rbo;
 780         unsigned i = 0;
 781
 782         mutex_lock(&rdev->gem.mutex);
 783         list_for_each_entry(rbo, &rdev->gem.objects, list) {
 784                 unsigned domain;
 785                 const char *placement;
 786
 787                 domain = radeon_mem_type_to_domain(rbo->tbo.mem.mem_type);
 788                 switch (domain) {
 789                 case RADEON_GEM_DOMAIN_VRAM:
 790                         placement = "VRAM";
 791                         break;
 792                 case RADEON_GEM_DOMAIN_GTT:
 793                         placement = " GTT";
 794                         break;
 795                 case RADEON_GEM_DOMAIN_CPU:
 796                 default:
 797                         placement = " CPU";
 798                         break;
 799                 }
 800                 seq_printf(m, "bo[0x%08x] %8ldkB %8ldMB %s pid %8ld\n",
 801                            i, radeon_bo_size(rbo) >> 10, radeon_bo_size(rbo) >> 20,
 802                            placement, (unsigned long)rbo->pid);
 803                 i++;
 804         }
 805         mutex_unlock(&rdev->gem.mutex);
 806         return 0;
 807 }
 808
 809 static struct drm_info_list radeon_debugfs_gem_list[] = {
 810         {"radeon_gem_info", &radeon_debugfs_gem_info, 0, NULL},
 811 };
 812 #endif
 813
 814 int radeon_gem_debugfs_init(struct radeon_device *rdev)
 815 {
 816 #if defined(CONFIG_DEBUG_FS)
 817         return radeon_debugfs_add_files(rdev, radeon_debugfs_gem_list, 1);
 818 #endif
 819         return 0;
 820 }