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_new(struct drm_device *dev, struct nouveau_channel *chan,
  64                 int size, int align, uint32_t domain, uint32_t tile_mode,
  65                 uint32_t tile_flags, struct nouveau_bo **pnvbo)
  66 {
  67         struct drm_nouveau_private *dev_priv = dev->dev_private;
  68         struct nouveau_bo *nvbo;
  69         u32 flags = 0;
  70         int ret;
  71
  72         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
  73                 flags |= TTM_PL_FLAG_VRAM;
  74         if (domain & NOUVEAU_GEM_DOMAIN_GART)
  75                 flags |= TTM_PL_FLAG_TT;
  76         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
  77                 flags |= TTM_PL_FLAG_SYSTEM;
  78
  79         ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
  80                              tile_flags, pnvbo);
  81         if (ret)
  82                 return ret;
  83         nvbo = *pnvbo;
  84
  85         /* we restrict allowed domains on nv50+ to only the types
  86          * that were requested at creation time.  not possibly on
  87          * earlier chips without busting the ABI.
  88          */
  89         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
  90                               NOUVEAU_GEM_DOMAIN_GART;
  91         if (dev_priv->card_type >= NV_50)
  92                 nvbo->valid_domains &= domain;
  93
  94         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
  95         if (!nvbo->gem) {
  96                 nouveau_bo_ref(NULL, pnvbo);
  97                 return -ENOMEM;
  98         }
  99
 100         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 101         nvbo->gem->driver_private = nvbo;
 102         return 0;
 103 }
 104
 105 static int
 106 nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
 107 {
 108         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 109
 110         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 111                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 112         else
 113                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 114
 115         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 116         rep->offset = nvbo->bo.offset;
 117         rep->map_handle = nvbo->bo.addr_space_offset;
 118         rep->tile_mode = nvbo->tile_mode;
 119         rep->tile_flags = nvbo->tile_flags;
 120         return 0;
 121 }
 122
 123 int
 124 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 125                       struct drm_file *file_priv)
 126 {
 127         struct drm_nouveau_private *dev_priv = dev->dev_private;
 128         struct drm_nouveau_gem_new *req = data;
 129         struct nouveau_bo *nvbo = NULL;
 130         struct nouveau_channel *chan = NULL;
 131         int ret = 0;
 132
 133         if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
 134                 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
 135
 136         if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
 137                 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags);
 138                 return -EINVAL;
 139         }
 140
 141         if (req->channel_hint) {
 142                 chan = nouveau_channel_get(dev, file_priv, req->channel_hint);
 143                 if (IS_ERR(chan))
 144                         return PTR_ERR(chan);
 145         }
 146
 147         ret = nouveau_gem_new(dev, chan, req->info.size, req->align,
 148                               req->info.domain, req->info.tile_mode,
 149                               req->info.tile_flags, &nvbo);
 150         if (chan)
 151                 nouveau_channel_put(&chan);
 152         if (ret)
 153                 return ret;
 154
 155         ret = nouveau_gem_info(nvbo->gem, &req->info);
 156         if (ret)
 157                 goto out;
 158
 159         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 160         /* drop reference from allocate - handle holds it now */
 161         drm_gem_object_unreference_unlocked(nvbo->gem);
 162 out:
 163         return ret;
 164 }
 165
 166 static int
 167 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 168                        uint32_t write_domains, uint32_t valid_domains)
 169 {
 170         struct nouveau_bo *nvbo = gem->driver_private;
 171         struct ttm_buffer_object *bo = &nvbo->bo;
 172         uint32_t domains = valid_domains & nvbo->valid_domains &
 173                 (write_domains ? write_domains : read_domains);
 174         uint32_t pref_flags = 0, valid_flags = 0;
 175
 176         if (!domains)
 177                 return -EINVAL;
 178
 179         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 180                 valid_flags |= TTM_PL_FLAG_VRAM;
 181
 182         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 183                 valid_flags |= TTM_PL_FLAG_TT;
 184
 185         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 186             bo->mem.mem_type == TTM_PL_VRAM)
 187                 pref_flags |= TTM_PL_FLAG_VRAM;
 188
 189         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 190                  bo->mem.mem_type == TTM_PL_TT)
 191                 pref_flags |= TTM_PL_FLAG_TT;
 192
 193         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 194                 pref_flags |= TTM_PL_FLAG_VRAM;
 195
 196         else
 197                 pref_flags |= TTM_PL_FLAG_TT;
 198
 199         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 200
 201         return 0;
 202 }
 203
 204 struct validate_op {
 205         struct list_head vram_list;
 206         struct list_head gart_list;
 207         struct list_head both_list;
 208 };
 209
 210 static void
 211 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 212 {
 213         struct list_head *entry, *tmp;
 214         struct nouveau_bo *nvbo;
 215
 216         list_for_each_safe(entry, tmp, list) {
 217                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 218
 219                 nouveau_bo_fence(nvbo, fence);
 220
 221                 if (unlikely(nvbo->validate_mapped)) {
 222                         ttm_bo_kunmap(&nvbo->kmap);
 223                         nvbo->validate_mapped = false;
 224                 }
 225
 226                 list_del(&nvbo->entry);
 227                 nvbo->reserved_by = NULL;
 228                 ttm_bo_unreserve(&nvbo->bo);
 229                 drm_gem_object_unreference_unlocked(nvbo->gem);
 230         }
 231 }
 232
 233 static void
 234 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 235 {
 236         validate_fini_list(&op->vram_list, fence);
 237         validate_fini_list(&op->gart_list, fence);
 238         validate_fini_list(&op->both_list, fence);
 239 }
 240
 241 static int
 242 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 243               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 244               int nr_buffers, struct validate_op *op)
 245 {
 246         struct drm_device *dev = chan->dev;
 247         struct drm_nouveau_private *dev_priv = dev->dev_private;
 248         uint32_t sequence;
 249         int trycnt = 0;
 250         int ret, i;
 251
 252         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 253 retry:
 254         if (++trycnt > 100000) {
 255                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 256                 return -EINVAL;
 257         }
 258
 259         for (i = 0; i < nr_buffers; i++) {
 260                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 261                 struct drm_gem_object *gem;
 262                 struct nouveau_bo *nvbo;
 263
 264                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 265                 if (!gem) {
 266                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 267                         validate_fini(op, NULL);
 268                         return -ENOENT;
 269                 }
 270                 nvbo = gem->driver_private;
 271
 272                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 273                         NV_ERROR(dev, "multiple instances of buffer %d on "
 274                                       "validation list\n", b->handle);
 275                         validate_fini(op, NULL);
 276                         return -EINVAL;
 277                 }
 278
 279                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 280                 if (ret) {
 281                         validate_fini(op, NULL);
 282                         if (unlikely(ret == -EAGAIN))
 283                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 284                         drm_gem_object_unreference_unlocked(gem);
 285                         if (unlikely(ret)) {
 286                                 if (ret != -ERESTARTSYS)
 287                                         NV_ERROR(dev, "fail reserve\n");
 288                                 return ret;
 289                         }
 290                         goto retry;
 291                 }
 292
 293                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 294                 nvbo->reserved_by = file_priv;
 295                 nvbo->pbbo_index = i;
 296                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 297                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 298                         list_add_tail(&nvbo->entry, &op->both_list);
 299                 else
 300                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 301                         list_add_tail(&nvbo->entry, &op->vram_list);
 302                 else
 303                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 304                         list_add_tail(&nvbo->entry, &op->gart_list);
 305                 else {
 306                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 307                                  b->valid_domains);
 308                         list_add_tail(&nvbo->entry, &op->both_list);
 309                         validate_fini(op, NULL);
 310                         return -EINVAL;
 311                 }
 312         }
 313
 314         return 0;
 315 }
 316
 317 static int
 318 validate_list(struct nouveau_channel *chan, struct list_head *list,
 319               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 320 {
 321         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 322                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 323         struct drm_device *dev = chan->dev;
 324         struct nouveau_bo *nvbo;
 325         int ret, relocs = 0;
 326
 327         list_for_each_entry(nvbo, list, entry) {
 328                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 329
 330                 ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
 331                 if (unlikely(ret)) {
 332                         NV_ERROR(dev, "fail pre-validate sync\n");
 333                         return ret;
 334                 }
 335
 336                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 337                                              b->write_domains,
 338                                              b->valid_domains);
 339                 if (unlikely(ret)) {
 340                         NV_ERROR(dev, "fail set_domain\n");
 341                         return ret;
 342                 }
 343
 344                 nvbo->channel = (b->read_domains & (1 << 31)) ? NULL : chan;
 345                 ret = nouveau_bo_validate(nvbo, true, false, false);
 346                 nvbo->channel = NULL;
 347                 if (unlikely(ret)) {
 348                         if (ret != -ERESTARTSYS)
 349                                 NV_ERROR(dev, "fail ttm_validate\n");
 350                         return ret;
 351                 }
 352
 353                 ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
 354                 if (unlikely(ret)) {
 355                         NV_ERROR(dev, "fail post-validate sync\n");
 356                         return ret;
 357                 }
 358
 359                 if (nvbo->bo.offset == b->presumed.offset &&
 360                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 361                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 362                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 363                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 364                         continue;
 365
 366                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 367                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 368                 else
 369                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 370                 b->presumed.offset = nvbo->bo.offset;
 371                 b->presumed.valid = 0;
 372                 relocs++;
 373
 374                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 375                                      &b->presumed, sizeof(b->presumed)))
 376                         return -EFAULT;
 377         }
 378
 379         return relocs;
 380 }
 381
 382 static int
 383 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 384                              struct drm_file *file_priv,
 385                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 386                              uint64_t user_buffers, int nr_buffers,
 387                              struct validate_op *op, int *apply_relocs)
 388 {
 389         struct drm_device *dev = chan->dev;
 390         int ret, relocs = 0;
 391
 392         INIT_LIST_HEAD(&op->vram_list);
 393         INIT_LIST_HEAD(&op->gart_list);
 394         INIT_LIST_HEAD(&op->both_list);
 395
 396         if (nr_buffers == 0)
 397                 return 0;
 398
 399         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 400         if (unlikely(ret)) {
 401                 if (ret != -ERESTARTSYS)
 402                         NV_ERROR(dev, "validate_init\n");
 403                 return ret;
 404         }
 405
 406         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 407         if (unlikely(ret < 0)) {
 408                 if (ret != -ERESTARTSYS)
 409                         NV_ERROR(dev, "validate vram_list\n");
 410                 validate_fini(op, NULL);
 411                 return ret;
 412         }
 413         relocs += ret;
 414
 415         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 416         if (unlikely(ret < 0)) {
 417                 if (ret != -ERESTARTSYS)
 418                         NV_ERROR(dev, "validate gart_list\n");
 419                 validate_fini(op, NULL);
 420                 return ret;
 421         }
 422         relocs += ret;
 423
 424         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 425         if (unlikely(ret < 0)) {
 426                 if (ret != -ERESTARTSYS)
 427                         NV_ERROR(dev, "validate both_list\n");
 428                 validate_fini(op, NULL);
 429                 return ret;
 430         }
 431         relocs += ret;
 432
 433         *apply_relocs = relocs;
 434         return 0;
 435 }
 436
 437 static inline void *
 438 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 439 {
 440         void *mem;
 441         void __user *userptr = (void __force __user *)(uintptr_t)user;
 442
 443         mem = kmalloc(nmemb * size, GFP_KERNEL);
 444         if (!mem)
 445                 return ERR_PTR(-ENOMEM);
 446
 447         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 448                 kfree(mem);
 449                 return ERR_PTR(-EFAULT);
 450         }
 451
 452         return mem;
 453 }
 454
 455 static int
 456 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 457                                 struct drm_nouveau_gem_pushbuf *req,
 458                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 459 {
 460         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 461         int ret = 0;
 462         unsigned i;
 463
 464         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 465         if (IS_ERR(reloc))
 466                 return PTR_ERR(reloc);
 467
 468         for (i = 0; i < req->nr_relocs; i++) {
 469                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 470                 struct drm_nouveau_gem_pushbuf_bo *b;
 471                 struct nouveau_bo *nvbo;
 472                 uint32_t data;
 473
 474                 if (unlikely(r->bo_index > req->nr_buffers)) {
 475                         NV_ERROR(dev, "reloc bo index invalid\n");
 476                         ret = -EINVAL;
 477                         break;
 478                 }
 479
 480                 b = &bo[r->bo_index];
 481                 if (b->presumed.valid)
 482                         continue;
 483
 484                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 485                         NV_ERROR(dev, "reloc container bo index invalid\n");
 486                         ret = -EINVAL;
 487                         break;
 488                 }
 489                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 490
 491                 if (unlikely(r->reloc_bo_offset + 4 >
 492                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 493                         NV_ERROR(dev, "reloc outside of bo\n");
 494                         ret = -EINVAL;
 495                         break;
 496                 }
 497
 498                 if (!nvbo->kmap.virtual) {
 499                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 500                                           &nvbo->kmap);
 501                         if (ret) {
 502                                 NV_ERROR(dev, "failed kmap for reloc\n");
 503                                 break;
 504                         }
 505                         nvbo->validate_mapped = true;
 506                 }
 507
 508                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 509                         data = b->presumed.offset + r->data;
 510                 else
 511                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 512                         data = (b->presumed.offset + r->data) >> 32;
 513                 else
 514                         data = r->data;
 515
 516                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 517                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 518                                 data |= r->tor;
 519                         else
 520                                 data |= r->vor;
 521                 }
 522
 523                 spin_lock(&nvbo->bo.bdev->fence_lock);
 524                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 525                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 526                 if (ret) {
 527                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 528                         break;
 529                 }
 530
 531                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 532         }
 533
 534         kfree(reloc);
 535         return ret;
 536 }
 537
 538 int
 539 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 540                           struct drm_file *file_priv)
 541 {
 542         struct drm_nouveau_private *dev_priv = dev->dev_private;
 543         struct drm_nouveau_gem_pushbuf *req = data;
 544         struct drm_nouveau_gem_pushbuf_push *push;
 545         struct drm_nouveau_gem_pushbuf_bo *bo;
 546         struct nouveau_channel *chan;
 547         struct validate_op op;
 548         struct nouveau_fence *fence = NULL;
 549         int i, j, ret = 0, do_reloc = 0;
 550
 551         chan = nouveau_channel_get(dev, file_priv, req->channel);
 552         if (IS_ERR(chan))
 553                 return PTR_ERR(chan);
 554
 555         req->vram_available = dev_priv->fb_aper_free;
 556         req->gart_available = dev_priv->gart_info.aper_free;
 557         if (unlikely(req->nr_push == 0))
 558                 goto out_next;
 559
 560         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 561                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 562                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 563                 nouveau_channel_put(&chan);
 564                 return -EINVAL;
 565         }
 566
 567         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 568                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 569                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 570                 nouveau_channel_put(&chan);
 571                 return -EINVAL;
 572         }
 573
 574         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 575                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 576                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 577                 nouveau_channel_put(&chan);
 578                 return -EINVAL;
 579         }
 580
 581         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 582         if (IS_ERR(push)) {
 583                 nouveau_channel_put(&chan);
 584                 return PTR_ERR(push);
 585         }
 586
 587         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 588         if (IS_ERR(bo)) {
 589                 kfree(push);
 590                 nouveau_channel_put(&chan);
 591                 return PTR_ERR(bo);
 592         }
 593
 594         /* Mark push buffers as being used on PFIFO, the validation code
 595          * will then make sure that if the pushbuf bo moves, that they
 596          * happen on the kernel channel, which will in turn cause a sync
 597          * to happen before we try and submit the push buffer.
 598          */
 599         for (i = 0; i < req->nr_push; i++) {
 600                 if (push[i].bo_index >= req->nr_buffers) {
 601                         NV_ERROR(dev, "push %d buffer not in list\n", i);
 602                         ret = -EINVAL;
 603                         goto out_prevalid;
 604                 }
 605
 606                 bo[push[i].bo_index].read_domains |= (1 << 31);
 607         }
 608
 609         /* Validate buffer list */
 610         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 611                                            req->nr_buffers, &op, &do_reloc);
 612         if (ret) {
 613                 if (ret != -ERESTARTSYS)
 614                         NV_ERROR(dev, "validate: %d\n", ret);
 615                 goto out_prevalid;
 616         }
 617
 618         /* Apply any relocations that are required */
 619         if (do_reloc) {
 620                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 621                 if (ret) {
 622                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 623                         goto out;
 624                 }
 625         }
 626
 627         if (chan->dma.ib_max) {
 628                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
 629                 if (ret) {
 630                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 631                         goto out;
 632                 }
 633
 634                 for (i = 0; i < req->nr_push; i++) {
 635                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 636                                 bo[push[i].bo_index].user_priv;
 637
 638                         nv50_dma_push(chan, nvbo, push[i].offset,
 639                                       push[i].length);
 640                 }
 641         } else
 642         if (dev_priv->chipset >= 0x25) {
 643                 ret = RING_SPACE(chan, req->nr_push * 2);
 644                 if (ret) {
 645                         NV_ERROR(dev, "cal_space: %d\n", ret);
 646                         goto out;
 647                 }
 648
 649                 for (i = 0; i < req->nr_push; i++) {
 650                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 651                                 bo[push[i].bo_index].user_priv;
 652                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 653
 654                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 655                                         push[i].offset) | 2);
 656                         OUT_RING(chan, 0);
 657                 }
 658         } else {
 659                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 660                 if (ret) {
 661                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 662                         goto out;
 663                 }
 664
 665                 for (i = 0; i < req->nr_push; i++) {
 666                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 667                                 bo[push[i].bo_index].user_priv;
 668                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 669                         uint32_t cmd;
 670
 671                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 672                         cmd |= 0x20000000;
 673                         if (unlikely(cmd != req->suffix0)) {
 674                                 if (!nvbo->kmap.virtual) {
 675                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 676                                                           nvbo->bo.mem.
 677                                                           num_pages,
 678                                                           &nvbo->kmap);
 679                                         if (ret) {
 680                                                 WIND_RING(chan);
 681                                                 goto out;
 682                                         }
 683                                         nvbo->validate_mapped = true;
 684                                 }
 685
 686                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 687                                                 push[i].length - 8) / 4, cmd);
 688                         }
 689
 690                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 691                                         push[i].offset) | 0x20000000);
 692                         OUT_RING(chan, 0);
 693                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 694                                 OUT_RING(chan, 0);
 695                 }
 696         }
 697
 698         ret = nouveau_fence_new(chan, &fence, true);
 699         if (ret) {
 700                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 701                 WIND_RING(chan);
 702                 goto out;
 703         }
 704
 705 out:
 706         validate_fini(&op, fence);
 707         nouveau_fence_unref(&fence);
 708
 709 out_prevalid:
 710         kfree(bo);
 711         kfree(push);
 712
 713 out_next:
 714         if (chan->dma.ib_max) {
 715                 req->suffix0 = 0x00000000;
 716                 req->suffix1 = 0x00000000;
 717         } else
 718         if (dev_priv->chipset >= 0x25) {
 719                 req->suffix0 = 0x00020000;
 720                 req->suffix1 = 0x00000000;
 721         } else {
 722                 req->suffix0 = 0x20000000 |
 723                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 724                 req->suffix1 = 0x00000000;
 725         }
 726
 727         nouveau_channel_put(&chan);
 728         return ret;
 729 }
 730
 731 static inline uint32_t
 732 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 733 {
 734         uint32_t flags = 0;
 735
 736         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 737                 flags |= TTM_PL_FLAG_VRAM;
 738         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 739                 flags |= TTM_PL_FLAG_TT;
 740
 741         return flags;
 742 }
 743
 744 int
 745 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 746                            struct drm_file *file_priv)
 747 {
 748         struct drm_nouveau_gem_cpu_prep *req = data;
 749         struct drm_gem_object *gem;
 750         struct nouveau_bo *nvbo;
 751         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 752         int ret = -EINVAL;
 753
 754         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 755         if (!gem)
 756                 return -ENOENT;
 757         nvbo = nouveau_gem_object(gem);
 758
 759         spin_lock(&nvbo->bo.bdev->fence_lock);
 760         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 761         spin_unlock(&nvbo->bo.bdev->fence_lock);
 762         drm_gem_object_unreference_unlocked(gem);
 763         return ret;
 764 }
 765
 766 int
 767 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 768                            struct drm_file *file_priv)
 769 {
 770         return 0;
 771 }
 772
 773 int
 774 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 775                        struct drm_file *file_priv)
 776 {
 777         struct drm_nouveau_gem_info *req = data;
 778         struct drm_gem_object *gem;
 779         int ret;
 780
 781         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 782         if (!gem)
 783                 return -ENOENT;
 784
 785         ret = nouveau_gem_info(gem, req);
 786         drm_gem_object_unreference_unlocked(gem);
 787         return ret;
 788 }
 789