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_put_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 ttm_operation_ctx ctx = { true, false };
 289         struct radeon_device *rdev = dev->dev_private;
 290         struct drm_radeon_gem_userptr *args = data;
 291         struct drm_gem_object *gobj;
 292         struct radeon_bo *bo;
 293         uint32_t handle;
 294         int r;
 295
 296         if (offset_in_page(args->addr | args->size))
 297                 return -EINVAL;
 298
 299         /* reject unknown flag values */
 300         if (args->flags & ~(RADEON_GEM_USERPTR_READONLY |
 301             RADEON_GEM_USERPTR_ANONONLY | RADEON_GEM_USERPTR_VALIDATE |
 302             RADEON_GEM_USERPTR_REGISTER))
 303                 return -EINVAL;
 304
 305         if (args->flags & RADEON_GEM_USERPTR_READONLY) {
 306                 /* readonly pages not tested on older hardware */
 307                 if (rdev->family < CHIP_R600)
 308                         return -EINVAL;
 309
 310         } else if (!(args->flags & RADEON_GEM_USERPTR_ANONONLY) ||
 311                    !(args->flags & RADEON_GEM_USERPTR_REGISTER)) {
 312
 313                 /* if we want to write to it we must require anonymous
 314                    memory and install a MMU notifier */
 315                 return -EACCES;
 316         }
 317
 318         down_read(&rdev->exclusive_lock);
 319
 320         /* create a gem object to contain this object in */
 321         r = radeon_gem_object_create(rdev, args->size, 0,
 322                                      RADEON_GEM_DOMAIN_CPU, 0,
 323                                      false, &gobj);
 324         if (r)
 325                 goto handle_lockup;
 326
 327         bo = gem_to_radeon_bo(gobj);
 328         r = radeon_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
 329         if (r)
 330                 goto release_object;
 331
 332         if (args->flags & RADEON_GEM_USERPTR_REGISTER) {
 333                 r = radeon_mn_register(bo, args->addr);
 334                 if (r)
 335                         goto release_object;
 336         }
 337
 338         if (args->flags & RADEON_GEM_USERPTR_VALIDATE) {
 339                 down_read(&current->mm->mmap_sem);
 340                 r = radeon_bo_reserve(bo, true);
 341                 if (r) {
 342                         up_read(&current->mm->mmap_sem);
 343                         goto release_object;
 344                 }
 345
 346                 radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_GTT);
 347                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 348                 radeon_bo_unreserve(bo);
 349                 up_read(&current->mm->mmap_sem);
 350                 if (r)
 351                         goto release_object;
 352         }
 353
 354         r = drm_gem_handle_create(filp, gobj, &handle);
 355         /* drop reference from allocate - handle holds it now */
 356         drm_gem_object_put_unlocked(gobj);
 357         if (r)
 358                 goto handle_lockup;
 359
 360         args->handle = handle;
 361         up_read(&rdev->exclusive_lock);
 362         return 0;
 363
 364 release_object:
 365         drm_gem_object_put_unlocked(gobj);
 366
 367 handle_lockup:
 368         up_read(&rdev->exclusive_lock);
 369         r = radeon_gem_handle_lockup(rdev, r);
 370
 371         return r;
 372 }
 373
 374 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 375                                 struct drm_file *filp)
 376 {
 377         /* transition the BO to a domain -
 378          * just validate the BO into a certain domain */
 379         struct radeon_device *rdev = dev->dev_private;
 380         struct drm_radeon_gem_set_domain *args = data;
 381         struct drm_gem_object *gobj;
 382         struct radeon_bo *robj;
 383         int r;
 384
 385         /* for now if someone requests domain CPU -
 386          * just make sure the buffer is finished with */
 387         down_read(&rdev->exclusive_lock);
 388
 389         /* just do a BO wait for now */
 390         gobj = drm_gem_object_lookup(filp, args->handle);
 391         if (gobj == NULL) {
 392                 up_read(&rdev->exclusive_lock);
 393                 return -ENOENT;
 394         }
 395         robj = gem_to_radeon_bo(gobj);
 396
 397         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 398
 399         drm_gem_object_put_unlocked(gobj);
 400         up_read(&rdev->exclusive_lock);
 401         r = radeon_gem_handle_lockup(robj->rdev, r);
 402         return r;
 403 }
 404
 405 int radeon_mode_dumb_mmap(struct drm_file *filp,
 406                           struct drm_device *dev,
 407                           uint32_t handle, uint64_t *offset_p)
 408 {
 409         struct drm_gem_object *gobj;
 410         struct radeon_bo *robj;
 411
 412         gobj = drm_gem_object_lookup(filp, handle);
 413         if (gobj == NULL) {
 414                 return -ENOENT;
 415         }
 416         robj = gem_to_radeon_bo(gobj);
 417         if (radeon_ttm_tt_has_userptr(robj->tbo.ttm)) {
 418                 drm_gem_object_put_unlocked(gobj);
 419                 return -EPERM;
 420         }
 421         *offset_p = radeon_bo_mmap_offset(robj);
 422         drm_gem_object_put_unlocked(gobj);
 423         return 0;
 424 }
 425
 426 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 427                           struct drm_file *filp)
 428 {
 429         struct drm_radeon_gem_mmap *args = data;
 430
 431         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 432 }
 433
 434 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 435                           struct drm_file *filp)
 436 {
 437         struct drm_radeon_gem_busy *args = data;
 438         struct drm_gem_object *gobj;
 439         struct radeon_bo *robj;
 440         int r;
 441         uint32_t cur_placement = 0;
 442
 443         gobj = drm_gem_object_lookup(filp, args->handle);
 444         if (gobj == NULL) {
 445                 return -ENOENT;
 446         }
 447         robj = gem_to_radeon_bo(gobj);
 448
 449         r = reservation_object_test_signaled_rcu(robj->tbo.resv, true);
 450         if (r == 0)
 451                 r = -EBUSY;
 452         else
 453                 r = 0;
 454
 455         cur_placement = READ_ONCE(robj->tbo.mem.mem_type);
 456         args->domain = radeon_mem_type_to_domain(cur_placement);
 457         drm_gem_object_put_unlocked(gobj);
 458         return r;
 459 }
 460
 461 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 462                               struct drm_file *filp)
 463 {
 464         struct radeon_device *rdev = dev->dev_private;
 465         struct drm_radeon_gem_wait_idle *args = data;
 466         struct drm_gem_object *gobj;
 467         struct radeon_bo *robj;
 468         int r = 0;
 469         uint32_t cur_placement = 0;
 470         long ret;
 471
 472         gobj = drm_gem_object_lookup(filp, args->handle);
 473         if (gobj == NULL) {
 474                 return -ENOENT;
 475         }
 476         robj = gem_to_radeon_bo(gobj);
 477
 478         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, 30 * HZ);
 479         if (ret == 0)
 480                 r = -EBUSY;
 481         else if (ret < 0)
 482                 r = ret;
 483
 484         /* Flush HDP cache via MMIO if necessary */
 485         cur_placement = READ_ONCE(robj->tbo.mem.mem_type);
 486         if (rdev->asic->mmio_hdp_flush &&
 487             radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)
 488                 robj->rdev->asic->mmio_hdp_flush(rdev);
 489         drm_gem_object_put_unlocked(gobj);
 490         r = radeon_gem_handle_lockup(rdev, r);
 491         return r;
 492 }
 493
 494 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 495                                 struct drm_file *filp)
 496 {
 497         struct drm_radeon_gem_set_tiling *args = data;
 498         struct drm_gem_object *gobj;
 499         struct radeon_bo *robj;
 500         int r = 0;
 501
 502         DRM_DEBUG("%d \n", args->handle);
 503         gobj = drm_gem_object_lookup(filp, args->handle);
 504         if (gobj == NULL)
 505                 return -ENOENT;
 506         robj = gem_to_radeon_bo(gobj);
 507         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 508         drm_gem_object_put_unlocked(gobj);
 509         return r;
 510 }
 511
 512 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 513                                 struct drm_file *filp)
 514 {
 515         struct drm_radeon_gem_get_tiling *args = data;
 516         struct drm_gem_object *gobj;
 517         struct radeon_bo *rbo;
 518         int r = 0;
 519
 520         DRM_DEBUG("\n");
 521         gobj = drm_gem_object_lookup(filp, args->handle);
 522         if (gobj == NULL)
 523                 return -ENOENT;
 524         rbo = gem_to_radeon_bo(gobj);
 525         r = radeon_bo_reserve(rbo, false);
 526         if (unlikely(r != 0))
 527                 goto out;
 528         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 529         radeon_bo_unreserve(rbo);
 530 out:
 531         drm_gem_object_put_unlocked(gobj);
 532         return r;
 533 }
 534
 535 /**
 536  * radeon_gem_va_update_vm -update the bo_va in its VM
 537  *
 538  * @rdev: radeon_device pointer
 539  * @bo_va: bo_va to update
 540  *
 541  * Update the bo_va directly after setting it's address. Errors are not
 542  * vital here, so they are not reported back to userspace.
 543  */
 544 static void radeon_gem_va_update_vm(struct radeon_device *rdev,
 545                                     struct radeon_bo_va *bo_va)
 546 {
 547         struct ttm_validate_buffer tv, *entry;
 548         struct radeon_bo_list *vm_bos;
 549         struct ww_acquire_ctx ticket;
 550         struct list_head list;
 551         unsigned domain;
 552         int r;
 553
 554         INIT_LIST_HEAD(&list);
 555
 556         tv.bo = &bo_va->bo->tbo;
 557         tv.shared = true;
 558         list_add(&tv.head, &list);
 559
 560         vm_bos = radeon_vm_get_bos(rdev, bo_va->vm, &list);
 561         if (!vm_bos)
 562                 return;
 563
 564         r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
 565         if (r)
 566                 goto error_free;
 567
 568         list_for_each_entry(entry, &list, head) {
 569                 domain = radeon_mem_type_to_domain(entry->bo->mem.mem_type);
 570                 /* if anything is swapped out don't swap it in here,
 571                    just abort and wait for the next CS */
 572                 if (domain == RADEON_GEM_DOMAIN_CPU)
 573                         goto error_unreserve;
 574         }
 575
 576         mutex_lock(&bo_va->vm->mutex);
 577         r = radeon_vm_clear_freed(rdev, bo_va->vm);
 578         if (r)
 579                 goto error_unlock;
 580
 581         if (bo_va->it.start)
 582                 r = radeon_vm_bo_update(rdev, bo_va, &bo_va->bo->tbo.mem);
 583
 584 error_unlock:
 585         mutex_unlock(&bo_va->vm->mutex);
 586
 587 error_unreserve:
 588         ttm_eu_backoff_reservation(&ticket, &list);
 589
 590 error_free:
 591         kvfree(vm_bos);
 592
 593         if (r && r != -ERESTARTSYS)
 594                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
 595 }
 596
 597 int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
 598                           struct drm_file *filp)
 599 {
 600         struct drm_radeon_gem_va *args = data;
 601         struct drm_gem_object *gobj;
 602         struct radeon_device *rdev = dev->dev_private;
 603         struct radeon_fpriv *fpriv = filp->driver_priv;
 604         struct radeon_bo *rbo;
 605         struct radeon_bo_va *bo_va;
 606         u32 invalid_flags;
 607         int r = 0;
 608
 609         if (!rdev->vm_manager.enabled) {
 610                 args->operation = RADEON_VA_RESULT_ERROR;
 611                 return -ENOTTY;
 612         }
 613
 614         /* !! DONT REMOVE !!
 615          * We don't support vm_id yet, to be sure we don't have have broken
 616          * userspace, reject anyone trying to use non 0 value thus moving
 617          * forward we can use those fields without breaking existant userspace
 618          */
 619         if (args->vm_id) {
 620                 args->operation = RADEON_VA_RESULT_ERROR;
 621                 return -EINVAL;
 622         }
 623
 624         if (args->offset < RADEON_VA_RESERVED_SIZE) {
 625                 dev_err(&dev->pdev->dev,
 626                         "offset 0x%lX is in reserved area 0x%X\n",
 627                         (unsigned long)args->offset,
 628                         RADEON_VA_RESERVED_SIZE);
 629                 args->operation = RADEON_VA_RESULT_ERROR;
 630                 return -EINVAL;
 631         }
 632
 633         /* don't remove, we need to enforce userspace to set the snooped flag
 634          * otherwise we will endup with broken userspace and we won't be able
 635          * to enable this feature without adding new interface
 636          */
 637         invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
 638         if ((args->flags & invalid_flags)) {
 639                 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
 640                         args->flags, invalid_flags);
 641                 args->operation = RADEON_VA_RESULT_ERROR;
 642                 return -EINVAL;
 643         }
 644
 645         switch (args->operation) {
 646         case RADEON_VA_MAP:
 647         case RADEON_VA_UNMAP:
 648                 break;
 649         default:
 650                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 651                         args->operation);
 652                 args->operation = RADEON_VA_RESULT_ERROR;
 653                 return -EINVAL;
 654         }
 655
 656         gobj = drm_gem_object_lookup(filp, args->handle);
 657         if (gobj == NULL) {
 658                 args->operation = RADEON_VA_RESULT_ERROR;
 659                 return -ENOENT;
 660         }
 661         rbo = gem_to_radeon_bo(gobj);
 662         r = radeon_bo_reserve(rbo, false);
 663         if (r) {
 664                 args->operation = RADEON_VA_RESULT_ERROR;
 665                 drm_gem_object_put_unlocked(gobj);
 666                 return r;
 667         }
 668         bo_va = radeon_vm_bo_find(&fpriv->vm, rbo);
 669         if (!bo_va) {
 670                 args->operation = RADEON_VA_RESULT_ERROR;
 671                 radeon_bo_unreserve(rbo);
 672                 drm_gem_object_put_unlocked(gobj);
 673                 return -ENOENT;
 674         }
 675
 676         switch (args->operation) {
 677         case RADEON_VA_MAP:
 678                 if (bo_va->it.start) {
 679                         args->operation = RADEON_VA_RESULT_VA_EXIST;
 680                         args->offset = bo_va->it.start * RADEON_GPU_PAGE_SIZE;
 681                         radeon_bo_unreserve(rbo);
 682                         goto out;
 683                 }
 684                 r = radeon_vm_bo_set_addr(rdev, bo_va, args->offset, args->flags);
 685                 break;
 686         case RADEON_VA_UNMAP:
 687                 r = radeon_vm_bo_set_addr(rdev, bo_va, 0, 0);
 688                 break;
 689         default:
 690                 break;
 691         }
 692         if (!r)
 693                 radeon_gem_va_update_vm(rdev, bo_va);
 694         args->operation = RADEON_VA_RESULT_OK;
 695         if (r) {
 696                 args->operation = RADEON_VA_RESULT_ERROR;
 697         }
 698 out:
 699         drm_gem_object_put_unlocked(gobj);
 700         return r;
 701 }
 702
 703 int radeon_gem_op_ioctl(struct drm_device *dev, void *data,
 704                         struct drm_file *filp)
 705 {
 706         struct drm_radeon_gem_op *args = data;
 707         struct drm_gem_object *gobj;
 708         struct radeon_bo *robj;
 709         int r;
 710
 711         gobj = drm_gem_object_lookup(filp, args->handle);
 712         if (gobj == NULL) {
 713                 return -ENOENT;
 714         }
 715         robj = gem_to_radeon_bo(gobj);
 716
 717         r = -EPERM;
 718         if (radeon_ttm_tt_has_userptr(robj->tbo.ttm))
 719                 goto out;
 720
 721         r = radeon_bo_reserve(robj, false);
 722         if (unlikely(r))
 723                 goto out;
 724
 725         switch (args->op) {
 726         case RADEON_GEM_OP_GET_INITIAL_DOMAIN:
 727                 args->value = robj->initial_domain;
 728                 break;
 729         case RADEON_GEM_OP_SET_INITIAL_DOMAIN:
 730                 robj->initial_domain = args->value & (RADEON_GEM_DOMAIN_VRAM |
 731                                                       RADEON_GEM_DOMAIN_GTT |
 732                                                       RADEON_GEM_DOMAIN_CPU);
 733                 break;
 734         default:
 735                 r = -EINVAL;
 736         }
 737
 738         radeon_bo_unreserve(robj);
 739 out:
 740         drm_gem_object_put_unlocked(gobj);
 741         return r;
 742 }
 743
 744 int radeon_mode_dumb_create(struct drm_file *file_priv,
 745                             struct drm_device *dev,
 746                             struct drm_mode_create_dumb *args)
 747 {
 748         struct radeon_device *rdev = dev->dev_private;
 749         struct drm_gem_object *gobj;
 750         uint32_t handle;
 751         int r;
 752
 753         args->pitch = radeon_align_pitch(rdev, args->width,
 754                                          DIV_ROUND_UP(args->bpp, 8), 0);
 755         args->size = args->pitch * args->height;
 756         args->size = ALIGN(args->size, PAGE_SIZE);
 757
 758         r = radeon_gem_object_create(rdev, args->size, 0,
 759                                      RADEON_GEM_DOMAIN_VRAM, 0,
 760                                      false, &gobj);
 761         if (r)
 762                 return -ENOMEM;
 763
 764         r = drm_gem_handle_create(file_priv, gobj, &handle);
 765         /* drop reference from allocate - handle holds it now */
 766         drm_gem_object_put_unlocked(gobj);
 767         if (r) {
 768                 return r;
 769         }
 770         args->handle = handle;
 771         return 0;
 772 }
 773
 774 #if defined(CONFIG_DEBUG_FS)
 775 static int radeon_debugfs_gem_info(struct seq_file *m, void *data)
 776 {
 777         struct drm_info_node *node = (struct drm_info_node *)m->private;
 778         struct drm_device *dev = node->minor->dev;
 779         struct radeon_device *rdev = dev->dev_private;
 780         struct radeon_bo *rbo;
 781         unsigned i = 0;
 782
 783         mutex_lock(&rdev->gem.mutex);
 784         list_for_each_entry(rbo, &rdev->gem.objects, list) {
 785                 unsigned domain;
 786                 const char *placement;
 787
 788                 domain = radeon_mem_type_to_domain(rbo->tbo.mem.mem_type);
 789                 switch (domain) {
 790                 case RADEON_GEM_DOMAIN_VRAM:
 791                         placement = "VRAM";
 792                         break;
 793                 case RADEON_GEM_DOMAIN_GTT:
 794                         placement = " GTT";
 795                         break;
 796                 case RADEON_GEM_DOMAIN_CPU:
 797                 default:
 798                         placement = " CPU";
 799                         break;
 800                 }
 801                 seq_printf(m, "bo[0x%08x] %8ldkB %8ldMB %s pid %8ld\n",
 802                            i, radeon_bo_size(rbo) >> 10, radeon_bo_size(rbo) >> 20,
 803                            placement, (unsigned long)rbo->pid);
 804                 i++;
 805         }
 806         mutex_unlock(&rdev->gem.mutex);
 807         return 0;
 808 }
 809
 810 static struct drm_info_list radeon_debugfs_gem_list[] = {
 811         {"radeon_gem_info", &radeon_debugfs_gem_info, 0, NULL},
 812 };
 813 #endif
 814
 815 int radeon_gem_debugfs_init(struct radeon_device *rdev)
 816 {
 817 #if defined(CONFIG_DEBUG_FS)
 818         return radeon_debugfs_add_files(rdev, radeon_debugfs_gem_list, 1);
 819 #endif
 820         return 0;
 821 }