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                 if (likely(fence))
 285                         nouveau_bo_fence(nvbo, fence);
 286
 287                 if (unlikely(nvbo->validate_mapped)) {
 288                         ttm_bo_kunmap(&nvbo->kmap);
 289                         nvbo->validate_mapped = false;
 290                 }
 291
 292                 list_del(&nvbo->entry);
 293                 nvbo->reserved_by = NULL;
 294                 ttm_bo_unreserve(&nvbo->bo);
 295                 drm_gem_object_unreference_unlocked(nvbo->gem);
 296         }
 297 }
 298
 299 static void
 300 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 301 {
 302         validate_fini_list(&op->vram_list, fence);
 303         validate_fini_list(&op->gart_list, fence);
 304         validate_fini_list(&op->both_list, fence);
 305 }
 306
 307 static int
 308 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 309               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 310               int nr_buffers, struct validate_op *op)
 311 {
 312         struct drm_device *dev = chan->dev;
 313         struct drm_nouveau_private *dev_priv = dev->dev_private;
 314         uint32_t sequence;
 315         int trycnt = 0;
 316         int ret, i;
 317
 318         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 319 retry:
 320         if (++trycnt > 100000) {
 321                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 322                 return -EINVAL;
 323         }
 324
 325         for (i = 0; i < nr_buffers; i++) {
 326                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 327                 struct drm_gem_object *gem;
 328                 struct nouveau_bo *nvbo;
 329
 330                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 331                 if (!gem) {
 332                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 333                         validate_fini(op, NULL);
 334                         return -ENOENT;
 335                 }
 336                 nvbo = gem->driver_private;
 337
 338                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 339                         NV_ERROR(dev, "multiple instances of buffer %d on "
 340                                       "validation list\n", b->handle);
 341                         validate_fini(op, NULL);
 342                         return -EINVAL;
 343                 }
 344
 345                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 346                 if (ret) {
 347                         validate_fini(op, NULL);
 348                         if (unlikely(ret == -EAGAIN))
 349                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 350                         drm_gem_object_unreference_unlocked(gem);
 351                         if (unlikely(ret)) {
 352                                 if (ret != -ERESTARTSYS)
 353                                         NV_ERROR(dev, "fail reserve\n");
 354                                 return ret;
 355                         }
 356                         goto retry;
 357                 }
 358
 359                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 360                 nvbo->reserved_by = file_priv;
 361                 nvbo->pbbo_index = i;
 362                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 363                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 364                         list_add_tail(&nvbo->entry, &op->both_list);
 365                 else
 366                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 367                         list_add_tail(&nvbo->entry, &op->vram_list);
 368                 else
 369                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 370                         list_add_tail(&nvbo->entry, &op->gart_list);
 371                 else {
 372                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 373                                  b->valid_domains);
 374                         list_add_tail(&nvbo->entry, &op->both_list);
 375                         validate_fini(op, NULL);
 376                         return -EINVAL;
 377                 }
 378         }
 379
 380         return 0;
 381 }
 382
 383 static int
 384 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 385 {
 386         struct nouveau_fence *fence = NULL;
 387         int ret = 0;
 388
 389         spin_lock(&nvbo->bo.bdev->fence_lock);
 390         if (nvbo->bo.sync_obj)
 391                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 392         spin_unlock(&nvbo->bo.bdev->fence_lock);
 393
 394         if (fence) {
 395                 ret = nouveau_fence_sync(fence, chan);
 396                 nouveau_fence_unref(&fence);
 397         }
 398
 399         return ret;
 400 }
 401
 402 static int
 403 validate_list(struct nouveau_channel *chan, struct list_head *list,
 404               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 405 {
 406         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 407         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 408                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 409         struct drm_device *dev = chan->dev;
 410         struct nouveau_bo *nvbo;
 411         int ret, relocs = 0;
 412
 413         list_for_each_entry(nvbo, list, entry) {
 414                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 415
 416                 ret = validate_sync(chan, nvbo);
 417                 if (unlikely(ret)) {
 418                         NV_ERROR(dev, "fail pre-validate sync\n");
 419                         return ret;
 420                 }
 421
 422                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 423                                              b->write_domains,
 424                                              b->valid_domains);
 425                 if (unlikely(ret)) {
 426                         NV_ERROR(dev, "fail set_domain\n");
 427                         return ret;
 428                 }
 429
 430                 nvbo->channel = (b->read_domains & (1 << 31)) ? NULL : chan;
 431                 ret = nouveau_bo_validate(nvbo, true, false, false);
 432                 nvbo->channel = NULL;
 433                 if (unlikely(ret)) {
 434                         if (ret != -ERESTARTSYS)
 435                                 NV_ERROR(dev, "fail ttm_validate\n");
 436                         return ret;
 437                 }
 438
 439                 ret = validate_sync(chan, nvbo);
 440                 if (unlikely(ret)) {
 441                         NV_ERROR(dev, "fail post-validate sync\n");
 442                         return ret;
 443                 }
 444
 445                 if (dev_priv->card_type < NV_50) {
 446                         if (nvbo->bo.offset == b->presumed.offset &&
 447                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 448                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 449                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 450                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 451                                 continue;
 452
 453                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 454                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 455                         else
 456                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 457                         b->presumed.offset = nvbo->bo.offset;
 458                         b->presumed.valid = 0;
 459                         relocs++;
 460
 461                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 462                                              &b->presumed, sizeof(b->presumed)))
 463                                 return -EFAULT;
 464                 }
 465         }
 466
 467         return relocs;
 468 }
 469
 470 static int
 471 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 472                              struct drm_file *file_priv,
 473                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 474                              uint64_t user_buffers, int nr_buffers,
 475                              struct validate_op *op, int *apply_relocs)
 476 {
 477         struct drm_device *dev = chan->dev;
 478         int ret, relocs = 0;
 479
 480         INIT_LIST_HEAD(&op->vram_list);
 481         INIT_LIST_HEAD(&op->gart_list);
 482         INIT_LIST_HEAD(&op->both_list);
 483
 484         if (nr_buffers == 0)
 485                 return 0;
 486
 487         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 488         if (unlikely(ret)) {
 489                 if (ret != -ERESTARTSYS)
 490                         NV_ERROR(dev, "validate_init\n");
 491                 return ret;
 492         }
 493
 494         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 495         if (unlikely(ret < 0)) {
 496                 if (ret != -ERESTARTSYS)
 497                         NV_ERROR(dev, "validate vram_list\n");
 498                 validate_fini(op, NULL);
 499                 return ret;
 500         }
 501         relocs += ret;
 502
 503         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 504         if (unlikely(ret < 0)) {
 505                 if (ret != -ERESTARTSYS)
 506                         NV_ERROR(dev, "validate gart_list\n");
 507                 validate_fini(op, NULL);
 508                 return ret;
 509         }
 510         relocs += ret;
 511
 512         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 513         if (unlikely(ret < 0)) {
 514                 if (ret != -ERESTARTSYS)
 515                         NV_ERROR(dev, "validate both_list\n");
 516                 validate_fini(op, NULL);
 517                 return ret;
 518         }
 519         relocs += ret;
 520
 521         *apply_relocs = relocs;
 522         return 0;
 523 }
 524
 525 static inline void *
 526 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 527 {
 528         void *mem;
 529         void __user *userptr = (void __force __user *)(uintptr_t)user;
 530
 531         mem = kmalloc(nmemb * size, GFP_KERNEL);
 532         if (!mem)
 533                 return ERR_PTR(-ENOMEM);
 534
 535         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 536                 kfree(mem);
 537                 return ERR_PTR(-EFAULT);
 538         }
 539
 540         return mem;
 541 }
 542
 543 static int
 544 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 545                                 struct drm_nouveau_gem_pushbuf *req,
 546                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 547 {
 548         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 549         int ret = 0;
 550         unsigned i;
 551
 552         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 553         if (IS_ERR(reloc))
 554                 return PTR_ERR(reloc);
 555
 556         for (i = 0; i < req->nr_relocs; i++) {
 557                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 558                 struct drm_nouveau_gem_pushbuf_bo *b;
 559                 struct nouveau_bo *nvbo;
 560                 uint32_t data;
 561
 562                 if (unlikely(r->bo_index > req->nr_buffers)) {
 563                         NV_ERROR(dev, "reloc bo index invalid\n");
 564                         ret = -EINVAL;
 565                         break;
 566                 }
 567
 568                 b = &bo[r->bo_index];
 569                 if (b->presumed.valid)
 570                         continue;
 571
 572                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 573                         NV_ERROR(dev, "reloc container bo index invalid\n");
 574                         ret = -EINVAL;
 575                         break;
 576                 }
 577                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 578
 579                 if (unlikely(r->reloc_bo_offset + 4 >
 580                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 581                         NV_ERROR(dev, "reloc outside of bo\n");
 582                         ret = -EINVAL;
 583                         break;
 584                 }
 585
 586                 if (!nvbo->kmap.virtual) {
 587                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 588                                           &nvbo->kmap);
 589                         if (ret) {
 590                                 NV_ERROR(dev, "failed kmap for reloc\n");
 591                                 break;
 592                         }
 593                         nvbo->validate_mapped = true;
 594                 }
 595
 596                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 597                         data = b->presumed.offset + r->data;
 598                 else
 599                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 600                         data = (b->presumed.offset + r->data) >> 32;
 601                 else
 602                         data = r->data;
 603
 604                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 605                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 606                                 data |= r->tor;
 607                         else
 608                                 data |= r->vor;
 609                 }
 610
 611                 spin_lock(&nvbo->bo.bdev->fence_lock);
 612                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 613                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 614                 if (ret) {
 615                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 616                         break;
 617                 }
 618
 619                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 620         }
 621
 622         kfree(reloc);
 623         return ret;
 624 }
 625
 626 int
 627 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 628                           struct drm_file *file_priv)
 629 {
 630         struct drm_nouveau_private *dev_priv = dev->dev_private;
 631         struct drm_nouveau_gem_pushbuf *req = data;
 632         struct drm_nouveau_gem_pushbuf_push *push;
 633         struct drm_nouveau_gem_pushbuf_bo *bo;
 634         struct nouveau_channel *chan;
 635         struct validate_op op;
 636         struct nouveau_fence *fence = NULL;
 637         int i, j, ret = 0, do_reloc = 0;
 638
 639         chan = nouveau_channel_get(file_priv, req->channel);
 640         if (IS_ERR(chan))
 641                 return PTR_ERR(chan);
 642
 643         req->vram_available = dev_priv->fb_aper_free;
 644         req->gart_available = dev_priv->gart_info.aper_free;
 645         if (unlikely(req->nr_push == 0))
 646                 goto out_next;
 647
 648         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 649                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 650                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 651                 nouveau_channel_put(&chan);
 652                 return -EINVAL;
 653         }
 654
 655         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 656                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 657                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 658                 nouveau_channel_put(&chan);
 659                 return -EINVAL;
 660         }
 661
 662         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 663                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 664                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 665                 nouveau_channel_put(&chan);
 666                 return -EINVAL;
 667         }
 668
 669         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 670         if (IS_ERR(push)) {
 671                 nouveau_channel_put(&chan);
 672                 return PTR_ERR(push);
 673         }
 674
 675         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 676         if (IS_ERR(bo)) {
 677                 kfree(push);
 678                 nouveau_channel_put(&chan);
 679                 return PTR_ERR(bo);
 680         }
 681
 682         /* Mark push buffers as being used on PFIFO, the validation code
 683          * will then make sure that if the pushbuf bo moves, that they
 684          * happen on the kernel channel, which will in turn cause a sync
 685          * to happen before we try and submit the push buffer.
 686          */
 687         for (i = 0; i < req->nr_push; i++) {
 688                 if (push[i].bo_index >= req->nr_buffers) {
 689                         NV_ERROR(dev, "push %d buffer not in list\n", i);
 690                         ret = -EINVAL;
 691                         goto out_prevalid;
 692                 }
 693
 694                 bo[push[i].bo_index].read_domains |= (1 << 31);
 695         }
 696
 697         /* Validate buffer list */
 698         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 699                                            req->nr_buffers, &op, &do_reloc);
 700         if (ret) {
 701                 if (ret != -ERESTARTSYS)
 702                         NV_ERROR(dev, "validate: %d\n", ret);
 703                 goto out_prevalid;
 704         }
 705
 706         /* Apply any relocations that are required */
 707         if (do_reloc) {
 708                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 709                 if (ret) {
 710                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 711                         goto out;
 712                 }
 713         }
 714
 715         if (chan->dma.ib_max) {
 716                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
 717                 if (ret) {
 718                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 719                         goto out;
 720                 }
 721
 722                 for (i = 0; i < req->nr_push; i++) {
 723                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 724                                 bo[push[i].bo_index].user_priv;
 725
 726                         nv50_dma_push(chan, nvbo, push[i].offset,
 727                                       push[i].length);
 728                 }
 729         } else
 730         if (dev_priv->chipset >= 0x25) {
 731                 ret = RING_SPACE(chan, req->nr_push * 2);
 732                 if (ret) {
 733                         NV_ERROR(dev, "cal_space: %d\n", ret);
 734                         goto out;
 735                 }
 736
 737                 for (i = 0; i < req->nr_push; i++) {
 738                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 739                                 bo[push[i].bo_index].user_priv;
 740                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 741
 742                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 743                                         push[i].offset) | 2);
 744                         OUT_RING(chan, 0);
 745                 }
 746         } else {
 747                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 748                 if (ret) {
 749                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 750                         goto out;
 751                 }
 752
 753                 for (i = 0; i < req->nr_push; i++) {
 754                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 755                                 bo[push[i].bo_index].user_priv;
 756                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 757                         uint32_t cmd;
 758
 759                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 760                         cmd |= 0x20000000;
 761                         if (unlikely(cmd != req->suffix0)) {
 762                                 if (!nvbo->kmap.virtual) {
 763                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 764                                                           nvbo->bo.mem.
 765                                                           num_pages,
 766                                                           &nvbo->kmap);
 767                                         if (ret) {
 768                                                 WIND_RING(chan);
 769                                                 goto out;
 770                                         }
 771                                         nvbo->validate_mapped = true;
 772                                 }
 773
 774                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 775                                                 push[i].length - 8) / 4, cmd);
 776                         }
 777
 778                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 779                                         push[i].offset) | 0x20000000);
 780                         OUT_RING(chan, 0);
 781                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 782                                 OUT_RING(chan, 0);
 783                 }
 784         }
 785
 786         ret = nouveau_fence_new(chan, &fence, true);
 787         if (ret) {
 788                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 789                 WIND_RING(chan);
 790                 goto out;
 791         }
 792
 793 out:
 794         validate_fini(&op, fence);
 795         nouveau_fence_unref(&fence);
 796
 797 out_prevalid:
 798         kfree(bo);
 799         kfree(push);
 800
 801 out_next:
 802         if (chan->dma.ib_max) {
 803                 req->suffix0 = 0x00000000;
 804                 req->suffix1 = 0x00000000;
 805         } else
 806         if (dev_priv->chipset >= 0x25) {
 807                 req->suffix0 = 0x00020000;
 808                 req->suffix1 = 0x00000000;
 809         } else {
 810                 req->suffix0 = 0x20000000 |
 811                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 812                 req->suffix1 = 0x00000000;
 813         }
 814
 815         nouveau_channel_put(&chan);
 816         return ret;
 817 }
 818
 819 static inline uint32_t
 820 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 821 {
 822         uint32_t flags = 0;
 823
 824         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 825                 flags |= TTM_PL_FLAG_VRAM;
 826         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 827                 flags |= TTM_PL_FLAG_TT;
 828
 829         return flags;
 830 }
 831
 832 int
 833 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 834                            struct drm_file *file_priv)
 835 {
 836         struct drm_nouveau_gem_cpu_prep *req = data;
 837         struct drm_gem_object *gem;
 838         struct nouveau_bo *nvbo;
 839         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 840         int ret = -EINVAL;
 841
 842         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 843         if (!gem)
 844                 return -ENOENT;
 845         nvbo = nouveau_gem_object(gem);
 846
 847         spin_lock(&nvbo->bo.bdev->fence_lock);
 848         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 849         spin_unlock(&nvbo->bo.bdev->fence_lock);
 850         drm_gem_object_unreference_unlocked(gem);
 851         return ret;
 852 }
 853
 854 int
 855 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 856                            struct drm_file *file_priv)
 857 {
 858         return 0;
 859 }
 860
 861 int
 862 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 863                        struct drm_file *file_priv)
 864 {
 865         struct drm_nouveau_gem_info *req = data;
 866         struct drm_gem_object *gem;
 867         int ret;
 868
 869         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 870         if (!gem)
 871                 return -ENOENT;
 872
 873         ret = nouveau_gem_info(file_priv, gem, req);
 874         drm_gem_object_unreference_unlocked(gem);
 875         return ret;
 876 }
 877