drivers/gpu/drm/nouveau/nouveau_gem.c

   1 /*
   2  * Copyright (C) 2008 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26 #include "drmP.h"
  27 #include "drm.h"
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_drm.h"
  31 #include "nouveau_dma.h"
  32
  33 #define nouveau_gem_pushbuf_sync(chan) 0
  34
  35 int
  36 nouveau_gem_object_new(struct drm_gem_object *gem)
  37 {
  38         return 0;
  39 }
  40
  41 void
  42 nouveau_gem_object_del(struct drm_gem_object *gem)
  43 {
  44         struct nouveau_bo *nvbo = gem->driver_private;
  45         struct ttm_buffer_object *bo = &nvbo->bo;
  46
  47         if (!nvbo)
  48                 return;
  49         nvbo->gem = NULL;
  50
  51         if (unlikely(nvbo->pin_refcnt)) {
  52                 nvbo->pin_refcnt = 1;
  53                 nouveau_bo_unpin(nvbo);
  54         }
  55
  56         ttm_bo_unref(&bo);
  57
  58         drm_gem_object_release(gem);
  59         kfree(gem);
  60 }
  61
  62 int
  63 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  64 {
  65         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
  66         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  67         struct nouveau_vma *vma;
  68         int ret;
  69
  70         if (!fpriv->vm)
  71                 return 0;
  72
  73         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  74         if (ret)
  75                 return ret;
  76
  77         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
  78         if (!vma) {
  79                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  80                 if (!vma) {
  81                         ret = -ENOMEM;
  82                         goto out;
  83                 }
  84
  85                 ret = nouveau_bo_vma_add(nvbo, fpriv->vm, vma);
  86                 if (ret) {
  87                         kfree(vma);
  88                         goto out;
  89                 }
  90         } else {
  91                 vma->refcount++;
  92         }
  93
  94 out:
  95         ttm_bo_unreserve(&nvbo->bo);
  96         return ret;
  97 }
  98
  99 void
 100 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 101 {
 102         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 103         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 104         struct nouveau_vma *vma;
 105         int ret;
 106
 107         if (!fpriv->vm)
 108                 return;
 109
 110         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 111         if (ret)
 112                 return;
 113
 114         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 115         if (vma) {
 116                 if (--vma->refcount == 0) {
 117                         nouveau_bo_vma_del(nvbo, vma);
 118                         kfree(vma);
 119                 }
 120         }
 121         ttm_bo_unreserve(&nvbo->bo);
 122 }
 123
 124 int
 125 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 126                 uint32_t tile_mode, uint32_t tile_flags,
 127                 struct nouveau_bo **pnvbo)
 128 {
 129         struct drm_nouveau_private *dev_priv = dev->dev_private;
 130         struct nouveau_bo *nvbo;
 131         u32 flags = 0;
 132         int ret;
 133
 134         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 135                 flags |= TTM_PL_FLAG_VRAM;
 136         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 137                 flags |= TTM_PL_FLAG_TT;
 138         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 139                 flags |= TTM_PL_FLAG_SYSTEM;
 140
 141         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 142                              tile_flags, pnvbo);
 143         if (ret)
 144                 return ret;
 145         nvbo = *pnvbo;
 146
 147         /* we restrict allowed domains on nv50+ to only the types
 148          * that were requested at creation time.  not possibly on
 149          * earlier chips without busting the ABI.
 150          */
 151         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 152                               NOUVEAU_GEM_DOMAIN_GART;
 153         if (dev_priv->card_type >= NV_50)
 154                 nvbo->valid_domains &= domain;
 155
 156         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 157         if (!nvbo->gem) {
 158                 nouveau_bo_ref(NULL, pnvbo);
 159                 return -ENOMEM;
 160         }
 161
 162         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 163         nvbo->gem->driver_private = nvbo;
 164         return 0;
 165 }
 166
 167 static int
 168 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 169                  struct drm_nouveau_gem_info *rep)
 170 {
 171         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 172         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 173         struct nouveau_vma *vma;
 174
 175         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 176                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 177         else
 178                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 179
 180         rep->offset = nvbo->bo.offset;
 181         if (fpriv->vm) {
 182                 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 183                 if (!vma)
 184                         return -EINVAL;
 185
 186                 rep->offset = vma->offset;
 187         }
 188
 189         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 190         rep->map_handle = nvbo->bo.addr_space_offset;
 191         rep->tile_mode = nvbo->tile_mode;
 192         rep->tile_flags = nvbo->tile_flags;
 193         return 0;
 194 }
 195
 196 int
 197 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 198                       struct drm_file *file_priv)
 199 {
 200         struct drm_nouveau_private *dev_priv = dev->dev_private;
 201         struct drm_nouveau_gem_new *req = data;
 202         struct nouveau_bo *nvbo = NULL;
 203         int ret = 0;
 204
 205         if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
 206                 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
 207
 208         if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
 209                 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags);
 210                 return -EINVAL;
 211         }
 212
 213         ret = nouveau_gem_new(dev, req->info.size, req->align,
 214                               req->info.domain, req->info.tile_mode,
 215                               req->info.tile_flags, &nvbo);
 216         if (ret)
 217                 return ret;
 218
 219         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 220         if (ret == 0) {
 221                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 222                 if (ret)
 223                         drm_gem_handle_delete(file_priv, req->info.handle);
 224         }
 225
 226         /* drop reference from allocate - handle holds it now */
 227         drm_gem_object_unreference_unlocked(nvbo->gem);
 228         return ret;
 229 }
 230
 231 static int
 232 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 233                        uint32_t write_domains, uint32_t valid_domains)
 234 {
 235         struct nouveau_bo *nvbo = gem->driver_private;
 236         struct ttm_buffer_object *bo = &nvbo->bo;
 237         uint32_t domains = valid_domains & nvbo->valid_domains &
 238                 (write_domains ? write_domains : read_domains);
 239         uint32_t pref_flags = 0, valid_flags = 0;
 240
 241         if (!domains)
 242                 return -EINVAL;
 243
 244         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 245                 valid_flags |= TTM_PL_FLAG_VRAM;
 246
 247         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 248                 valid_flags |= TTM_PL_FLAG_TT;
 249
 250         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 251             bo->mem.mem_type == TTM_PL_VRAM)
 252                 pref_flags |= TTM_PL_FLAG_VRAM;
 253
 254         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 255                  bo->mem.mem_type == TTM_PL_TT)
 256                 pref_flags |= TTM_PL_FLAG_TT;
 257
 258         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 259                 pref_flags |= TTM_PL_FLAG_VRAM;
 260
 261         else
 262                 pref_flags |= TTM_PL_FLAG_TT;
 263
 264         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 265
 266         return 0;
 267 }
 268
 269 struct validate_op {
 270         struct list_head vram_list;
 271         struct list_head gart_list;
 272         struct list_head both_list;
 273 };
 274
 275 static void
 276 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 277 {
 278         struct list_head *entry, *tmp;
 279         struct nouveau_bo *nvbo;
 280
 281         list_for_each_safe(entry, tmp, list) {
 282                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 283
 284                 nouveau_bo_fence(nvbo, fence);
 285
 286                 if (unlikely(nvbo->validate_mapped)) {
 287                         ttm_bo_kunmap(&nvbo->kmap);
 288                         nvbo->validate_mapped = false;
 289                 }
 290
 291                 list_del(&nvbo->entry);
 292                 nvbo->reserved_by = NULL;
 293                 ttm_bo_unreserve(&nvbo->bo);
 294                 drm_gem_object_unreference_unlocked(nvbo->gem);
 295         }
 296 }
 297
 298 static void
 299 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 300 {
 301         validate_fini_list(&op->vram_list, fence);
 302         validate_fini_list(&op->gart_list, fence);
 303         validate_fini_list(&op->both_list, fence);
 304 }
 305
 306 static int
 307 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 308               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 309               int nr_buffers, struct validate_op *op)
 310 {
 311         struct drm_device *dev = chan->dev;
 312         struct drm_nouveau_private *dev_priv = dev->dev_private;
 313         uint32_t sequence;
 314         int trycnt = 0;
 315         int ret, i;
 316
 317         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 318 retry:
 319         if (++trycnt > 100000) {
 320                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 321                 return -EINVAL;
 322         }
 323
 324         for (i = 0; i < nr_buffers; i++) {
 325                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 326                 struct drm_gem_object *gem;
 327                 struct nouveau_bo *nvbo;
 328
 329                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 330                 if (!gem) {
 331                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 332                         validate_fini(op, NULL);
 333                         return -ENOENT;
 334                 }
 335                 nvbo = gem->driver_private;
 336
 337                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 338                         NV_ERROR(dev, "multiple instances of buffer %d on "
 339                                       "validation list\n", b->handle);
 340                         validate_fini(op, NULL);
 341                         return -EINVAL;
 342                 }
 343
 344                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 345                 if (ret) {
 346                         validate_fini(op, NULL);
 347                         if (unlikely(ret == -EAGAIN))
 348                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 349                         drm_gem_object_unreference_unlocked(gem);
 350                         if (unlikely(ret)) {
 351                                 if (ret != -ERESTARTSYS)
 352                                         NV_ERROR(dev, "fail reserve\n");
 353                                 return ret;
 354                         }
 355                         goto retry;
 356                 }
 357
 358                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 359                 nvbo->reserved_by = file_priv;
 360                 nvbo->pbbo_index = i;
 361                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 362                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 363                         list_add_tail(&nvbo->entry, &op->both_list);
 364                 else
 365                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 366                         list_add_tail(&nvbo->entry, &op->vram_list);
 367                 else
 368                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 369                         list_add_tail(&nvbo->entry, &op->gart_list);
 370                 else {
 371                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 372                                  b->valid_domains);
 373                         list_add_tail(&nvbo->entry, &op->both_list);
 374                         validate_fini(op, NULL);
 375                         return -EINVAL;
 376                 }
 377         }
 378
 379         return 0;
 380 }
 381
 382 static int
 383 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 384 {
 385         struct nouveau_fence *fence = NULL;
 386         int ret = 0;
 387
 388         spin_lock(&nvbo->bo.bdev->fence_lock);
 389         if (nvbo->bo.sync_obj)
 390                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 391         spin_unlock(&nvbo->bo.bdev->fence_lock);
 392
 393         if (fence) {
 394                 ret = nouveau_fence_sync(fence, chan);
 395                 nouveau_fence_unref(&fence);
 396         }
 397
 398         return ret;
 399 }
 400
 401 static int
 402 validate_list(struct nouveau_channel *chan, struct list_head *list,
 403               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 404 {
 405         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 406         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 407                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 408         struct drm_device *dev = chan->dev;
 409         struct nouveau_bo *nvbo;
 410         int ret, relocs = 0;
 411
 412         list_for_each_entry(nvbo, list, entry) {
 413                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 414
 415                 ret = validate_sync(chan, nvbo);
 416                 if (unlikely(ret)) {
 417                         NV_ERROR(dev, "fail pre-validate sync\n");
 418                         return ret;
 419                 }
 420
 421                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 422                                              b->write_domains,
 423                                              b->valid_domains);
 424                 if (unlikely(ret)) {
 425                         NV_ERROR(dev, "fail set_domain\n");
 426                         return ret;
 427                 }
 428
 429                 ret = nouveau_bo_validate(nvbo, true, false, false);
 430                 if (unlikely(ret)) {
 431                         if (ret != -ERESTARTSYS)
 432                                 NV_ERROR(dev, "fail ttm_validate\n");
 433                         return ret;
 434                 }
 435
 436                 ret = validate_sync(chan, nvbo);
 437                 if (unlikely(ret)) {
 438                         NV_ERROR(dev, "fail post-validate sync\n");
 439                         return ret;
 440                 }
 441
 442                 if (dev_priv->card_type < NV_50) {
 443                         if (nvbo->bo.offset == b->presumed.offset &&
 444                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 445                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 446                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 447                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 448                                 continue;
 449
 450                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 451                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 452                         else
 453                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 454                         b->presumed.offset = nvbo->bo.offset;
 455                         b->presumed.valid = 0;
 456                         relocs++;
 457
 458                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 459                                              &b->presumed, sizeof(b->presumed)))
 460                                 return -EFAULT;
 461                 }
 462         }
 463
 464         return relocs;
 465 }
 466
 467 static int
 468 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 469                              struct drm_file *file_priv,
 470                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 471                              uint64_t user_buffers, int nr_buffers,
 472                              struct validate_op *op, int *apply_relocs)
 473 {
 474         struct drm_device *dev = chan->dev;
 475         int ret, relocs = 0;
 476
 477         INIT_LIST_HEAD(&op->vram_list);
 478         INIT_LIST_HEAD(&op->gart_list);
 479         INIT_LIST_HEAD(&op->both_list);
 480
 481         if (nr_buffers == 0)
 482                 return 0;
 483
 484         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 485         if (unlikely(ret)) {
 486                 if (ret != -ERESTARTSYS)
 487                         NV_ERROR(dev, "validate_init\n");
 488                 return ret;
 489         }
 490
 491         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 492         if (unlikely(ret < 0)) {
 493                 if (ret != -ERESTARTSYS)
 494                         NV_ERROR(dev, "validate vram_list\n");
 495                 validate_fini(op, NULL);
 496                 return ret;
 497         }
 498         relocs += ret;
 499
 500         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 501         if (unlikely(ret < 0)) {
 502                 if (ret != -ERESTARTSYS)
 503                         NV_ERROR(dev, "validate gart_list\n");
 504                 validate_fini(op, NULL);
 505                 return ret;
 506         }
 507         relocs += ret;
 508
 509         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 510         if (unlikely(ret < 0)) {
 511                 if (ret != -ERESTARTSYS)
 512                         NV_ERROR(dev, "validate both_list\n");
 513                 validate_fini(op, NULL);
 514                 return ret;
 515         }
 516         relocs += ret;
 517
 518         *apply_relocs = relocs;
 519         return 0;
 520 }
 521
 522 static inline void *
 523 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 524 {
 525         void *mem;
 526         void __user *userptr = (void __force __user *)(uintptr_t)user;
 527
 528         mem = kmalloc(nmemb * size, GFP_KERNEL);
 529         if (!mem)
 530                 return ERR_PTR(-ENOMEM);
 531
 532         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 533                 kfree(mem);
 534                 return ERR_PTR(-EFAULT);
 535         }
 536
 537         return mem;
 538 }
 539
 540 static int
 541 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 542                                 struct drm_nouveau_gem_pushbuf *req,
 543                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 544 {
 545         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 546         int ret = 0;
 547         unsigned i;
 548
 549         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 550         if (IS_ERR(reloc))
 551                 return PTR_ERR(reloc);
 552
 553         for (i = 0; i < req->nr_relocs; i++) {
 554                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 555                 struct drm_nouveau_gem_pushbuf_bo *b;
 556                 struct nouveau_bo *nvbo;
 557                 uint32_t data;
 558
 559                 if (unlikely(r->bo_index > req->nr_buffers)) {
 560                         NV_ERROR(dev, "reloc bo index invalid\n");
 561                         ret = -EINVAL;
 562                         break;
 563                 }
 564
 565                 b = &bo[r->bo_index];
 566                 if (b->presumed.valid)
 567                         continue;
 568
 569                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 570                         NV_ERROR(dev, "reloc container bo index invalid\n");
 571                         ret = -EINVAL;
 572                         break;
 573                 }
 574                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 575
 576                 if (unlikely(r->reloc_bo_offset + 4 >
 577                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 578                         NV_ERROR(dev, "reloc outside of bo\n");
 579                         ret = -EINVAL;
 580                         break;
 581                 }
 582
 583                 if (!nvbo->kmap.virtual) {
 584                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 585                                           &nvbo->kmap);
 586                         if (ret) {
 587                                 NV_ERROR(dev, "failed kmap for reloc\n");
 588                                 break;
 589                         }
 590                         nvbo->validate_mapped = true;
 591                 }
 592
 593                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 594                         data = b->presumed.offset + r->data;
 595                 else
 596                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 597                         data = (b->presumed.offset + r->data) >> 32;
 598                 else
 599                         data = r->data;
 600
 601                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 602                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 603                                 data |= r->tor;
 604                         else
 605                                 data |= r->vor;
 606                 }
 607
 608                 spin_lock(&nvbo->bo.bdev->fence_lock);
 609                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 610                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 611                 if (ret) {
 612                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 613                         break;
 614                 }
 615
 616                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 617         }
 618
 619         kfree(reloc);
 620         return ret;
 621 }
 622
 623 int
 624 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 625                           struct drm_file *file_priv)
 626 {
 627         struct drm_nouveau_private *dev_priv = dev->dev_private;
 628         struct drm_nouveau_gem_pushbuf *req = data;
 629         struct drm_nouveau_gem_pushbuf_push *push;
 630         struct drm_nouveau_gem_pushbuf_bo *bo;
 631         struct nouveau_channel *chan;
 632         struct validate_op op;
 633         struct nouveau_fence *fence = NULL;
 634         int i, j, ret = 0, do_reloc = 0;
 635
 636         chan = nouveau_channel_get(file_priv, req->channel);
 637         if (IS_ERR(chan))
 638                 return PTR_ERR(chan);
 639
 640         req->vram_available = dev_priv->fb_aper_free;
 641         req->gart_available = dev_priv->gart_info.aper_free;
 642         if (unlikely(req->nr_push == 0))
 643                 goto out_next;
 644
 645         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 646                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 647                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 648                 nouveau_channel_put(&chan);
 649                 return -EINVAL;
 650         }
 651
 652         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 653                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 654                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 655                 nouveau_channel_put(&chan);
 656                 return -EINVAL;
 657         }
 658
 659         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 660                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 661                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 662                 nouveau_channel_put(&chan);
 663                 return -EINVAL;
 664         }
 665
 666         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 667         if (IS_ERR(push)) {
 668                 nouveau_channel_put(&chan);
 669                 return PTR_ERR(push);
 670         }
 671
 672         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 673         if (IS_ERR(bo)) {
 674                 kfree(push);
 675                 nouveau_channel_put(&chan);
 676                 return PTR_ERR(bo);
 677         }
 678
 679         /* Ensure all push buffers are on validate list */
 680         for (i = 0; i < req->nr_push; i++) {
 681                 if (push[i].bo_index >= req->nr_buffers) {
 682                         NV_ERROR(dev, "push %d buffer not in list\n", i);
 683                         ret = -EINVAL;
 684                         goto out_prevalid;
 685                 }
 686         }
 687
 688         /* Validate buffer list */
 689         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 690                                            req->nr_buffers, &op, &do_reloc);
 691         if (ret) {
 692                 if (ret != -ERESTARTSYS)
 693                         NV_ERROR(dev, "validate: %d\n", ret);
 694                 goto out_prevalid;
 695         }
 696
 697         /* Apply any relocations that are required */
 698         if (do_reloc) {
 699                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 700                 if (ret) {
 701                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 702                         goto out;
 703                 }
 704         }
 705
 706         if (chan->dma.ib_max) {
 707                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
 708                 if (ret) {
 709                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 710                         goto out;
 711                 }
 712
 713                 for (i = 0; i < req->nr_push; i++) {
 714                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 715                                 bo[push[i].bo_index].user_priv;
 716
 717                         nv50_dma_push(chan, nvbo, push[i].offset,
 718                                       push[i].length);
 719                 }
 720         } else
 721         if (dev_priv->chipset >= 0x25) {
 722                 ret = RING_SPACE(chan, req->nr_push * 2);
 723                 if (ret) {
 724                         NV_ERROR(dev, "cal_space: %d\n", ret);
 725                         goto out;
 726                 }
 727
 728                 for (i = 0; i < req->nr_push; i++) {
 729                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 730                                 bo[push[i].bo_index].user_priv;
 731                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 732
 733                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 734                                         push[i].offset) | 2);
 735                         OUT_RING(chan, 0);
 736                 }
 737         } else {
 738                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 739                 if (ret) {
 740                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 741                         goto out;
 742                 }
 743
 744                 for (i = 0; i < req->nr_push; i++) {
 745                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 746                                 bo[push[i].bo_index].user_priv;
 747                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 748                         uint32_t cmd;
 749
 750                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 751                         cmd |= 0x20000000;
 752                         if (unlikely(cmd != req->suffix0)) {
 753                                 if (!nvbo->kmap.virtual) {
 754                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 755                                                           nvbo->bo.mem.
 756                                                           num_pages,
 757                                                           &nvbo->kmap);
 758                                         if (ret) {
 759                                                 WIND_RING(chan);
 760                                                 goto out;
 761                                         }
 762                                         nvbo->validate_mapped = true;
 763                                 }
 764
 765                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 766                                                 push[i].length - 8) / 4, cmd);
 767                         }
 768
 769                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 770                                         push[i].offset) | 0x20000000);
 771                         OUT_RING(chan, 0);
 772                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 773                                 OUT_RING(chan, 0);
 774                 }
 775         }
 776
 777         ret = nouveau_fence_new(chan, &fence, true);
 778         if (ret) {
 779                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 780                 WIND_RING(chan);
 781                 goto out;
 782         }
 783
 784 out:
 785         validate_fini(&op, fence);
 786         nouveau_fence_unref(&fence);
 787
 788 out_prevalid:
 789         kfree(bo);
 790         kfree(push);
 791
 792 out_next:
 793         if (chan->dma.ib_max) {
 794                 req->suffix0 = 0x00000000;
 795                 req->suffix1 = 0x00000000;
 796         } else
 797         if (dev_priv->chipset >= 0x25) {
 798                 req->suffix0 = 0x00020000;
 799                 req->suffix1 = 0x00000000;
 800         } else {
 801                 req->suffix0 = 0x20000000 |
 802                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 803                 req->suffix1 = 0x00000000;
 804         }
 805
 806         nouveau_channel_put(&chan);
 807         return ret;
 808 }
 809
 810 static inline uint32_t
 811 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 812 {
 813         uint32_t flags = 0;
 814
 815         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 816                 flags |= TTM_PL_FLAG_VRAM;
 817         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 818                 flags |= TTM_PL_FLAG_TT;
 819
 820         return flags;
 821 }
 822
 823 int
 824 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 825                            struct drm_file *file_priv)
 826 {
 827         struct drm_nouveau_gem_cpu_prep *req = data;
 828         struct drm_gem_object *gem;
 829         struct nouveau_bo *nvbo;
 830         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 831         int ret = -EINVAL;
 832
 833         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 834         if (!gem)
 835                 return -ENOENT;
 836         nvbo = nouveau_gem_object(gem);
 837
 838         spin_lock(&nvbo->bo.bdev->fence_lock);
 839         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 840         spin_unlock(&nvbo->bo.bdev->fence_lock);
 841         drm_gem_object_unreference_unlocked(gem);
 842         return ret;
 843 }
 844
 845 int
 846 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 847                            struct drm_file *file_priv)
 848 {
 849         return 0;
 850 }
 851
 852 int
 853 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 854                        struct drm_file *file_priv)
 855 {
 856         struct drm_nouveau_gem_info *req = data;
 857         struct drm_gem_object *gem;
 858         int ret;
 859
 860         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 861         if (!gem)
 862                 return -ENOENT;
 863
 864         ret = nouveau_gem_info(file_priv, gem, req);
 865         drm_gem_object_unreference_unlocked(gem);
 866         return ret;
 867 }
 868