Pileus Git - ~andy/linux/blob - 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 <linux/dma-buf.h>
  27 #include <drm/drmP.h>
  28
  29 #include "nouveau_drv.h"
  30 #include <drm/nouveau_drm.h>
  31 #include "nouveau_dma.h"
  32 #include "nouveau_fence.h"
  33
  34 #define nouveau_gem_pushbuf_sync(chan) 0
  35
  36 int
  37 nouveau_gem_object_new(struct drm_gem_object *gem)
  38 {
  39         return 0;
  40 }
  41
  42 void
  43 nouveau_gem_object_del(struct drm_gem_object *gem)
  44 {
  45         struct nouveau_bo *nvbo = gem->driver_private;
  46         struct ttm_buffer_object *bo = &nvbo->bo;
  47
  48         if (!nvbo)
  49                 return;
  50         nvbo->gem = NULL;
  51
  52         if (unlikely(nvbo->pin_refcnt)) {
  53                 nvbo->pin_refcnt = 1;
  54                 nouveau_bo_unpin(nvbo);
  55         }
  56
  57         if (gem->import_attach)
  58                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  59
  60         ttm_bo_unref(&bo);
  61
  62         drm_gem_object_release(gem);
  63         kfree(gem);
  64 }
  65
  66 int
  67 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  68 {
  69         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
  70         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  71         struct nouveau_vma *vma;
  72         int ret;
  73
  74         if (!fpriv->vm)
  75                 return 0;
  76
  77         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  78         if (ret)
  79                 return ret;
  80
  81         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
  82         if (!vma) {
  83                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  84                 if (!vma) {
  85                         ret = -ENOMEM;
  86                         goto out;
  87                 }
  88
  89                 ret = nouveau_bo_vma_add(nvbo, fpriv->vm, vma);
  90                 if (ret) {
  91                         kfree(vma);
  92                         goto out;
  93                 }
  94         } else {
  95                 vma->refcount++;
  96         }
  97
  98 out:
  99         ttm_bo_unreserve(&nvbo->bo);
 100         return ret;
 101 }
 102
 103 void
 104 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 105 {
 106         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 107         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 108         struct nouveau_vma *vma;
 109         int ret;
 110
 111         if (!fpriv->vm)
 112                 return;
 113
 114         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 115         if (ret)
 116                 return;
 117
 118         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 119         if (vma) {
 120                 if (--vma->refcount == 0) {
 121                         nouveau_bo_vma_del(nvbo, vma);
 122                         kfree(vma);
 123                 }
 124         }
 125         ttm_bo_unreserve(&nvbo->bo);
 126 }
 127
 128 int
 129 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 130                 uint32_t tile_mode, uint32_t tile_flags,
 131                 struct nouveau_bo **pnvbo)
 132 {
 133         struct drm_nouveau_private *dev_priv = dev->dev_private;
 134         struct nouveau_bo *nvbo;
 135         u32 flags = 0;
 136         int ret;
 137
 138         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 139                 flags |= TTM_PL_FLAG_VRAM;
 140         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 141                 flags |= TTM_PL_FLAG_TT;
 142         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 143                 flags |= TTM_PL_FLAG_SYSTEM;
 144
 145         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 146                              tile_flags, NULL, pnvbo);
 147         if (ret)
 148                 return ret;
 149         nvbo = *pnvbo;
 150
 151         /* we restrict allowed domains on nv50+ to only the types
 152          * that were requested at creation time.  not possibly on
 153          * earlier chips without busting the ABI.
 154          */
 155         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 156                               NOUVEAU_GEM_DOMAIN_GART;
 157         if (dev_priv->card_type >= NV_50)
 158                 nvbo->valid_domains &= domain;
 159
 160         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 161         if (!nvbo->gem) {
 162                 nouveau_bo_ref(NULL, pnvbo);
 163                 return -ENOMEM;
 164         }
 165
 166         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 167         nvbo->gem->driver_private = nvbo;
 168         return 0;
 169 }
 170
 171 static int
 172 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 173                  struct drm_nouveau_gem_info *rep)
 174 {
 175         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 176         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 177         struct nouveau_vma *vma;
 178
 179         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 180                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 181         else
 182                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 183
 184         rep->offset = nvbo->bo.offset;
 185         if (fpriv->vm) {
 186                 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 187                 if (!vma)
 188                         return -EINVAL;
 189
 190                 rep->offset = vma->offset;
 191         }
 192
 193         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 194         rep->map_handle = nvbo->bo.addr_space_offset;
 195         rep->tile_mode = nvbo->tile_mode;
 196         rep->tile_flags = nvbo->tile_flags;
 197         return 0;
 198 }
 199
 200 int
 201 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 202                       struct drm_file *file_priv)
 203 {
 204         struct drm_nouveau_private *dev_priv = dev->dev_private;
 205         struct drm_nouveau_gem_new *req = data;
 206         struct nouveau_bo *nvbo = NULL;
 207         int ret = 0;
 208
 209         dev_priv->ttm.bdev.dev_mapping = dev->dev_mapping;
 210
 211         if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
 212                 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags);
 213                 return -EINVAL;
 214         }
 215
 216         ret = nouveau_gem_new(dev, req->info.size, req->align,
 217                               req->info.domain, req->info.tile_mode,
 218                               req->info.tile_flags, &nvbo);
 219         if (ret)
 220                 return ret;
 221
 222         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 223         if (ret == 0) {
 224                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 225                 if (ret)
 226                         drm_gem_handle_delete(file_priv, req->info.handle);
 227         }
 228
 229         /* drop reference from allocate - handle holds it now */
 230         drm_gem_object_unreference_unlocked(nvbo->gem);
 231         return ret;
 232 }
 233
 234 static int
 235 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 236                        uint32_t write_domains, uint32_t valid_domains)
 237 {
 238         struct nouveau_bo *nvbo = gem->driver_private;
 239         struct ttm_buffer_object *bo = &nvbo->bo;
 240         uint32_t domains = valid_domains & nvbo->valid_domains &
 241                 (write_domains ? write_domains : read_domains);
 242         uint32_t pref_flags = 0, valid_flags = 0;
 243
 244         if (!domains)
 245                 return -EINVAL;
 246
 247         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 248                 valid_flags |= TTM_PL_FLAG_VRAM;
 249
 250         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 251                 valid_flags |= TTM_PL_FLAG_TT;
 252
 253         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 254             bo->mem.mem_type == TTM_PL_VRAM)
 255                 pref_flags |= TTM_PL_FLAG_VRAM;
 256
 257         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 258                  bo->mem.mem_type == TTM_PL_TT)
 259                 pref_flags |= TTM_PL_FLAG_TT;
 260
 261         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 262                 pref_flags |= TTM_PL_FLAG_VRAM;
 263
 264         else
 265                 pref_flags |= TTM_PL_FLAG_TT;
 266
 267         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 268
 269         return 0;
 270 }
 271
 272 struct validate_op {
 273         struct list_head vram_list;
 274         struct list_head gart_list;
 275         struct list_head both_list;
 276 };
 277
 278 static void
 279 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 280 {
 281         struct list_head *entry, *tmp;
 282         struct nouveau_bo *nvbo;
 283
 284         list_for_each_safe(entry, tmp, list) {
 285                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 286
 287                 nouveau_bo_fence(nvbo, fence);
 288
 289                 if (unlikely(nvbo->validate_mapped)) {
 290                         ttm_bo_kunmap(&nvbo->kmap);
 291                         nvbo->validate_mapped = false;
 292                 }
 293
 294                 list_del(&nvbo->entry);
 295                 nvbo->reserved_by = NULL;
 296                 ttm_bo_unreserve(&nvbo->bo);
 297                 drm_gem_object_unreference_unlocked(nvbo->gem);
 298         }
 299 }
 300
 301 static void
 302 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 303 {
 304         validate_fini_list(&op->vram_list, fence);
 305         validate_fini_list(&op->gart_list, fence);
 306         validate_fini_list(&op->both_list, fence);
 307 }
 308
 309 static int
 310 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 311               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 312               int nr_buffers, struct validate_op *op)
 313 {
 314         struct drm_device *dev = chan->dev;
 315         struct drm_nouveau_private *dev_priv = dev->dev_private;
 316         uint32_t sequence;
 317         int trycnt = 0;
 318         int ret, i;
 319
 320         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 321 retry:
 322         if (++trycnt > 100000) {
 323                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 324                 return -EINVAL;
 325         }
 326
 327         for (i = 0; i < nr_buffers; i++) {
 328                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 329                 struct drm_gem_object *gem;
 330                 struct nouveau_bo *nvbo;
 331
 332                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 333                 if (!gem) {
 334                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 335                         validate_fini(op, NULL);
 336                         return -ENOENT;
 337                 }
 338                 nvbo = gem->driver_private;
 339
 340                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 341                         NV_ERROR(dev, "multiple instances of buffer %d on "
 342                                       "validation list\n", b->handle);
 343                         drm_gem_object_unreference_unlocked(gem);
 344                         validate_fini(op, NULL);
 345                         return -EINVAL;
 346                 }
 347
 348                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 349                 if (ret) {
 350                         validate_fini(op, NULL);
 351                         if (unlikely(ret == -EAGAIN))
 352                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 353                         drm_gem_object_unreference_unlocked(gem);
 354                         if (unlikely(ret)) {
 355                                 if (ret != -ERESTARTSYS)
 356                                         NV_ERROR(dev, "fail reserve\n");
 357                                 return ret;
 358                         }
 359                         goto retry;
 360                 }
 361
 362                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 363                 nvbo->reserved_by = file_priv;
 364                 nvbo->pbbo_index = i;
 365                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 366                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 367                         list_add_tail(&nvbo->entry, &op->both_list);
 368                 else
 369                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 370                         list_add_tail(&nvbo->entry, &op->vram_list);
 371                 else
 372                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 373                         list_add_tail(&nvbo->entry, &op->gart_list);
 374                 else {
 375                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 376                                  b->valid_domains);
 377                         list_add_tail(&nvbo->entry, &op->both_list);
 378                         validate_fini(op, NULL);
 379                         return -EINVAL;
 380                 }
 381         }
 382
 383         return 0;
 384 }
 385
 386 static int
 387 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 388 {
 389         struct nouveau_fence *fence = NULL;
 390         int ret = 0;
 391
 392         spin_lock(&nvbo->bo.bdev->fence_lock);
 393         if (nvbo->bo.sync_obj)
 394                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 395         spin_unlock(&nvbo->bo.bdev->fence_lock);
 396
 397         if (fence) {
 398                 ret = nouveau_fence_sync(fence, chan);
 399                 nouveau_fence_unref(&fence);
 400         }
 401
 402         return ret;
 403 }
 404
 405 static int
 406 validate_list(struct nouveau_channel *chan, struct list_head *list,
 407               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 408 {
 409         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 410         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 411                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 412         struct drm_device *dev = chan->dev;
 413         struct nouveau_bo *nvbo;
 414         int ret, relocs = 0;
 415
 416         list_for_each_entry(nvbo, list, entry) {
 417                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 418
 419                 ret = validate_sync(chan, nvbo);
 420                 if (unlikely(ret)) {
 421                         NV_ERROR(dev, "fail pre-validate sync\n");
 422                         return ret;
 423                 }
 424
 425                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 426                                              b->write_domains,
 427                                              b->valid_domains);
 428                 if (unlikely(ret)) {
 429                         NV_ERROR(dev, "fail set_domain\n");
 430                         return ret;
 431                 }
 432
 433                 ret = nouveau_bo_validate(nvbo, true, false, false);
 434                 if (unlikely(ret)) {
 435                         if (ret != -ERESTARTSYS)
 436                                 NV_ERROR(dev, "fail ttm_validate\n");
 437                         return ret;
 438                 }
 439
 440                 ret = validate_sync(chan, nvbo);
 441                 if (unlikely(ret)) {
 442                         NV_ERROR(dev, "fail post-validate sync\n");
 443                         return ret;
 444                 }
 445
 446                 if (dev_priv->card_type < NV_50) {
 447                         if (nvbo->bo.offset == b->presumed.offset &&
 448                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 449                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 450                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 451                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 452                                 continue;
 453
 454                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 455                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 456                         else
 457                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 458                         b->presumed.offset = nvbo->bo.offset;
 459                         b->presumed.valid = 0;
 460                         relocs++;
 461
 462                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 463                                              &b->presumed, sizeof(b->presumed)))
 464                                 return -EFAULT;
 465                 }
 466         }
 467
 468         return relocs;
 469 }
 470
 471 static int
 472 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 473                              struct drm_file *file_priv,
 474                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 475                              uint64_t user_buffers, int nr_buffers,
 476                              struct validate_op *op, int *apply_relocs)
 477 {
 478         struct drm_device *dev = chan->dev;
 479         int ret, relocs = 0;
 480
 481         INIT_LIST_HEAD(&op->vram_list);
 482         INIT_LIST_HEAD(&op->gart_list);
 483         INIT_LIST_HEAD(&op->both_list);
 484
 485         if (nr_buffers == 0)
 486                 return 0;
 487
 488         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 489         if (unlikely(ret)) {
 490                 if (ret != -ERESTARTSYS)
 491                         NV_ERROR(dev, "validate_init\n");
 492                 return ret;
 493         }
 494
 495         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 496         if (unlikely(ret < 0)) {
 497                 if (ret != -ERESTARTSYS)
 498                         NV_ERROR(dev, "validate vram_list\n");
 499                 validate_fini(op, NULL);
 500                 return ret;
 501         }
 502         relocs += ret;
 503
 504         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 505         if (unlikely(ret < 0)) {
 506                 if (ret != -ERESTARTSYS)
 507                         NV_ERROR(dev, "validate gart_list\n");
 508                 validate_fini(op, NULL);
 509                 return ret;
 510         }
 511         relocs += ret;
 512
 513         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 514         if (unlikely(ret < 0)) {
 515                 if (ret != -ERESTARTSYS)
 516                         NV_ERROR(dev, "validate both_list\n");
 517                 validate_fini(op, NULL);
 518                 return ret;
 519         }
 520         relocs += ret;
 521
 522         *apply_relocs = relocs;
 523         return 0;
 524 }
 525
 526 static inline void *
 527 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 528 {
 529         void *mem;
 530         void __user *userptr = (void __force __user *)(uintptr_t)user;
 531
 532         mem = kmalloc(nmemb * size, GFP_KERNEL);
 533         if (!mem)
 534                 return ERR_PTR(-ENOMEM);
 535
 536         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 537                 kfree(mem);
 538                 return ERR_PTR(-EFAULT);
 539         }
 540
 541         return mem;
 542 }
 543
 544 static int
 545 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 546                                 struct drm_nouveau_gem_pushbuf *req,
 547                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 548 {
 549         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 550         int ret = 0;
 551         unsigned i;
 552
 553         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 554         if (IS_ERR(reloc))
 555                 return PTR_ERR(reloc);
 556
 557         for (i = 0; i < req->nr_relocs; i++) {
 558                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 559                 struct drm_nouveau_gem_pushbuf_bo *b;
 560                 struct nouveau_bo *nvbo;
 561                 uint32_t data;
 562
 563                 if (unlikely(r->bo_index > req->nr_buffers)) {
 564                         NV_ERROR(dev, "reloc bo index invalid\n");
 565                         ret = -EINVAL;
 566                         break;
 567                 }
 568
 569                 b = &bo[r->bo_index];
 570                 if (b->presumed.valid)
 571                         continue;
 572
 573                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 574                         NV_ERROR(dev, "reloc container bo index invalid\n");
 575                         ret = -EINVAL;
 576                         break;
 577                 }
 578                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 579
 580                 if (unlikely(r->reloc_bo_offset + 4 >
 581                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 582                         NV_ERROR(dev, "reloc outside of bo\n");
 583                         ret = -EINVAL;
 584                         break;
 585                 }
 586
 587                 if (!nvbo->kmap.virtual) {
 588                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 589                                           &nvbo->kmap);
 590                         if (ret) {
 591                                 NV_ERROR(dev, "failed kmap for reloc\n");
 592                                 break;
 593                         }
 594                         nvbo->validate_mapped = true;
 595                 }
 596
 597                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 598                         data = b->presumed.offset + r->data;
 599                 else
 600                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 601                         data = (b->presumed.offset + r->data) >> 32;
 602                 else
 603                         data = r->data;
 604
 605                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 606                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 607                                 data |= r->tor;
 608                         else
 609                                 data |= r->vor;
 610                 }
 611
 612                 spin_lock(&nvbo->bo.bdev->fence_lock);
 613                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 614                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 615                 if (ret) {
 616                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 617                         break;
 618                 }
 619
 620                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 621         }
 622
 623         kfree(reloc);
 624         return ret;
 625 }
 626
 627 int
 628 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 629                           struct drm_file *file_priv)
 630 {
 631         struct drm_nouveau_private *dev_priv = dev->dev_private;
 632         struct drm_nouveau_gem_pushbuf *req = data;
 633         struct drm_nouveau_gem_pushbuf_push *push;
 634         struct drm_nouveau_gem_pushbuf_bo *bo;
 635         struct nouveau_channel *chan;
 636         struct validate_op op;
 637         struct nouveau_fence *fence = NULL;
 638         int i, j, ret = 0, do_reloc = 0;
 639
 640         chan = nouveau_channel_get(file_priv, req->channel);
 641         if (IS_ERR(chan))
 642                 return PTR_ERR(chan);
 643
 644         req->vram_available = dev_priv->fb_aper_free;
 645         req->gart_available = dev_priv->gart_info.aper_free;
 646         if (unlikely(req->nr_push == 0))
 647                 goto out_next;
 648
 649         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 650                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 651                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 652                 nouveau_channel_put(&chan);
 653                 return -EINVAL;
 654         }
 655
 656         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 657                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 658                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 659                 nouveau_channel_put(&chan);
 660                 return -EINVAL;
 661         }
 662
 663         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 664                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 665                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 666                 nouveau_channel_put(&chan);
 667                 return -EINVAL;
 668         }
 669
 670         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 671         if (IS_ERR(push)) {
 672                 nouveau_channel_put(&chan);
 673                 return PTR_ERR(push);
 674         }
 675
 676         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 677         if (IS_ERR(bo)) {
 678                 kfree(push);
 679                 nouveau_channel_put(&chan);
 680                 return PTR_ERR(bo);
 681         }
 682
 683         /* Ensure all push buffers are on validate list */
 684         for (i = 0; i < req->nr_push; i++) {
 685                 if (push[i].bo_index >= req->nr_buffers) {
 686                         NV_ERROR(dev, "push %d buffer not in list\n", i);
 687                         ret = -EINVAL;
 688                         goto out_prevalid;
 689                 }
 690         }
 691
 692         /* Validate buffer list */
 693         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 694                                            req->nr_buffers, &op, &do_reloc);
 695         if (ret) {
 696                 if (ret != -ERESTARTSYS)
 697                         NV_ERROR(dev, "validate: %d\n", ret);
 698                 goto out_prevalid;
 699         }
 700
 701         /* Apply any relocations that are required */
 702         if (do_reloc) {
 703                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 704                 if (ret) {
 705                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 706                         goto out;
 707                 }
 708         }
 709
 710         if (chan->dma.ib_max) {
 711                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 712                 if (ret) {
 713                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 714                         goto out;
 715                 }
 716
 717                 for (i = 0; i < req->nr_push; i++) {
 718                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 719                                 bo[push[i].bo_index].user_priv;
 720
 721                         nv50_dma_push(chan, nvbo, push[i].offset,
 722                                       push[i].length);
 723                 }
 724         } else
 725         if (dev_priv->chipset >= 0x25) {
 726                 ret = RING_SPACE(chan, req->nr_push * 2);
 727                 if (ret) {
 728                         NV_ERROR(dev, "cal_space: %d\n", ret);
 729                         goto out;
 730                 }
 731
 732                 for (i = 0; i < req->nr_push; i++) {
 733                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 734                                 bo[push[i].bo_index].user_priv;
 735                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 736
 737                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 738                                         push[i].offset) | 2);
 739                         OUT_RING(chan, 0);
 740                 }
 741         } else {
 742                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 743                 if (ret) {
 744                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 745                         goto out;
 746                 }
 747
 748                 for (i = 0; i < req->nr_push; i++) {
 749                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 750                                 bo[push[i].bo_index].user_priv;
 751                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 752                         uint32_t cmd;
 753
 754                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 755                         cmd |= 0x20000000;
 756                         if (unlikely(cmd != req->suffix0)) {
 757                                 if (!nvbo->kmap.virtual) {
 758                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 759                                                           nvbo->bo.mem.
 760                                                           num_pages,
 761                                                           &nvbo->kmap);
 762                                         if (ret) {
 763                                                 WIND_RING(chan);
 764                                                 goto out;
 765                                         }
 766                                         nvbo->validate_mapped = true;
 767                                 }
 768
 769                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 770                                                 push[i].length - 8) / 4, cmd);
 771                         }
 772
 773                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 774                                         push[i].offset) | 0x20000000);
 775                         OUT_RING(chan, 0);
 776                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 777                                 OUT_RING(chan, 0);
 778                 }
 779         }
 780
 781         ret = nouveau_fence_new(chan, &fence);
 782         if (ret) {
 783                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 784                 WIND_RING(chan);
 785                 goto out;
 786         }
 787
 788 out:
 789         validate_fini(&op, fence);
 790         nouveau_fence_unref(&fence);
 791
 792 out_prevalid:
 793         kfree(bo);
 794         kfree(push);
 795
 796 out_next:
 797         if (chan->dma.ib_max) {
 798                 req->suffix0 = 0x00000000;
 799                 req->suffix1 = 0x00000000;
 800         } else
 801         if (dev_priv->chipset >= 0x25) {
 802                 req->suffix0 = 0x00020000;
 803                 req->suffix1 = 0x00000000;
 804         } else {
 805                 req->suffix0 = 0x20000000 |
 806                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 807                 req->suffix1 = 0x00000000;
 808         }
 809
 810         nouveau_channel_put(&chan);
 811         return ret;
 812 }
 813
 814 static inline uint32_t
 815 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 816 {
 817         uint32_t flags = 0;
 818
 819         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 820                 flags |= TTM_PL_FLAG_VRAM;
 821         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 822                 flags |= TTM_PL_FLAG_TT;
 823
 824         return flags;
 825 }
 826
 827 int
 828 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 829                            struct drm_file *file_priv)
 830 {
 831         struct drm_nouveau_gem_cpu_prep *req = data;
 832         struct drm_gem_object *gem;
 833         struct nouveau_bo *nvbo;
 834         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 835         int ret = -EINVAL;
 836
 837         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 838         if (!gem)
 839                 return -ENOENT;
 840         nvbo = nouveau_gem_object(gem);
 841
 842         spin_lock(&nvbo->bo.bdev->fence_lock);
 843         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 844         spin_unlock(&nvbo->bo.bdev->fence_lock);
 845         drm_gem_object_unreference_unlocked(gem);
 846         return ret;
 847 }
 848
 849 int
 850 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 851                            struct drm_file *file_priv)
 852 {
 853         return 0;
 854 }
 855
 856 int
 857 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 858                        struct drm_file *file_priv)
 859 {
 860         struct drm_nouveau_gem_info *req = data;
 861         struct drm_gem_object *gem;
 862         int ret;
 863
 864         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 865         if (!gem)
 866                 return -ENOENT;
 867
 868         ret = nouveau_gem_info(file_priv, gem, req);
 869         drm_gem_object_unreference_unlocked(gem);
 870         return ret;
 871 }
 872