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