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 "drmP.h"
  28 #include "drm.h"
  29
  30 #include "nouveau_drv.h"
  31 #include "nouveau_drm.h"
  32 #include "nouveau_dma.h"
  33 #include "nouveau_fence.h"
  34
  35 #define nouveau_gem_pushbuf_sync(chan) 0
  36
  37 int
  38 nouveau_gem_object_new(struct drm_gem_object *gem)
  39 {
  40         return 0;
  41 }
  42
  43 void
  44 nouveau_gem_object_del(struct drm_gem_object *gem)
  45 {
  46         struct nouveau_bo *nvbo = gem->driver_private;
  47         struct ttm_buffer_object *bo = &nvbo->bo;
  48
  49         if (!nvbo)
  50                 return;
  51         nvbo->gem = NULL;
  52
  53         if (unlikely(nvbo->pin_refcnt)) {
  54                 nvbo->pin_refcnt = 1;
  55                 nouveau_bo_unpin(nvbo);
  56         }
  57
  58         if (gem->import_attach)
  59                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  60
  61         ttm_bo_unref(&bo);
  62
  63         drm_gem_object_release(gem);
  64         kfree(gem);
  65 }
  66
  67 int
  68 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  69 {
  70         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
  71         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  72         struct nouveau_vma *vma;
  73         int ret;
  74
  75         if (!fpriv->vm)
  76                 return 0;
  77
  78         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  79         if (ret)
  80                 return ret;
  81
  82         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
  83         if (!vma) {
  84                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  85                 if (!vma) {
  86                         ret = -ENOMEM;
  87                         goto out;
  88                 }
  89
  90                 ret = nouveau_bo_vma_add(nvbo, fpriv->vm, vma);
  91                 if (ret) {
  92                         kfree(vma);
  93                         goto out;
  94                 }
  95         } else {
  96                 vma->refcount++;
  97         }
  98
  99 out:
 100         ttm_bo_unreserve(&nvbo->bo);
 101         return ret;
 102 }
 103
 104 void
 105 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 106 {
 107         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 108         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 109         struct nouveau_vma *vma;
 110         int ret;
 111
 112         if (!fpriv->vm)
 113                 return;
 114
 115         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 116         if (ret)
 117                 return;
 118
 119         vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 120         if (vma) {
 121                 if (--vma->refcount == 0) {
 122                         nouveau_bo_vma_del(nvbo, vma);
 123                         kfree(vma);
 124                 }
 125         }
 126         ttm_bo_unreserve(&nvbo->bo);
 127 }
 128
 129 int
 130 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 131                 uint32_t tile_mode, uint32_t tile_flags,
 132                 struct nouveau_bo **pnvbo)
 133 {
 134         struct drm_nouveau_private *dev_priv = dev->dev_private;
 135         struct nouveau_bo *nvbo;
 136         u32 flags = 0;
 137         int ret;
 138
 139         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 140                 flags |= TTM_PL_FLAG_VRAM;
 141         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 142                 flags |= TTM_PL_FLAG_TT;
 143         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 144                 flags |= TTM_PL_FLAG_SYSTEM;
 145
 146         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 147                              tile_flags, NULL, pnvbo);
 148         if (ret)
 149                 return ret;
 150         nvbo = *pnvbo;
 151
 152         /* we restrict allowed domains on nv50+ to only the types
 153          * that were requested at creation time.  not possibly on
 154          * earlier chips without busting the ABI.
 155          */
 156         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 157                               NOUVEAU_GEM_DOMAIN_GART;
 158         if (dev_priv->card_type >= NV_50)
 159                 nvbo->valid_domains &= domain;
 160
 161         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 162         if (!nvbo->gem) {
 163                 nouveau_bo_ref(NULL, pnvbo);
 164                 return -ENOMEM;
 165         }
 166
 167         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 168         nvbo->gem->driver_private = nvbo;
 169         return 0;
 170 }
 171
 172 static int
 173 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 174                  struct drm_nouveau_gem_info *rep)
 175 {
 176         struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
 177         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 178         struct nouveau_vma *vma;
 179
 180         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 181                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 182         else
 183                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 184
 185         rep->offset = nvbo->bo.offset;
 186         if (fpriv->vm) {
 187                 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
 188                 if (!vma)
 189                         return -EINVAL;
 190
 191                 rep->offset = vma->offset;
 192         }
 193
 194         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 195         rep->map_handle = nvbo->bo.addr_space_offset;
 196         rep->tile_mode = nvbo->tile_mode;
 197         rep->tile_flags = nvbo->tile_flags;
 198         return 0;
 199 }
 200
 201 int
 202 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 203                       struct drm_file *file_priv)
 204 {
 205         struct drm_nouveau_private *dev_priv = dev->dev_private;
 206         struct drm_nouveau_gem_new *req = data;
 207         struct nouveau_bo *nvbo = NULL;
 208         int ret = 0;
 209
 210         if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
 211                 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
 212
 213         if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
 214                 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags);
 215                 return -EINVAL;
 216         }
 217
 218         ret = nouveau_gem_new(dev, req->info.size, req->align,
 219                               req->info.domain, req->info.tile_mode,
 220                               req->info.tile_flags, &nvbo);
 221         if (ret)
 222                 return ret;
 223
 224         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 225         if (ret == 0) {
 226                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 227                 if (ret)
 228                         drm_gem_handle_delete(file_priv, req->info.handle);
 229         }
 230
 231         /* drop reference from allocate - handle holds it now */
 232         drm_gem_object_unreference_unlocked(nvbo->gem);
 233         return ret;
 234 }
 235
 236 static int
 237 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 238                        uint32_t write_domains, uint32_t valid_domains)
 239 {
 240         struct nouveau_bo *nvbo = gem->driver_private;
 241         struct ttm_buffer_object *bo = &nvbo->bo;
 242         uint32_t domains = valid_domains & nvbo->valid_domains &
 243                 (write_domains ? write_domains : read_domains);
 244         uint32_t pref_flags = 0, valid_flags = 0;
 245
 246         if (!domains)
 247                 return -EINVAL;
 248
 249         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 250                 valid_flags |= TTM_PL_FLAG_VRAM;
 251
 252         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 253                 valid_flags |= TTM_PL_FLAG_TT;
 254
 255         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 256             bo->mem.mem_type == TTM_PL_VRAM)
 257                 pref_flags |= TTM_PL_FLAG_VRAM;
 258
 259         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 260                  bo->mem.mem_type == TTM_PL_TT)
 261                 pref_flags |= TTM_PL_FLAG_TT;
 262
 263         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 264                 pref_flags |= TTM_PL_FLAG_VRAM;
 265
 266         else
 267                 pref_flags |= TTM_PL_FLAG_TT;
 268
 269         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 270
 271         return 0;
 272 }
 273
 274 struct validate_op {
 275         struct list_head vram_list;
 276         struct list_head gart_list;
 277         struct list_head both_list;
 278 };
 279
 280 static void
 281 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 282 {
 283         struct list_head *entry, *tmp;
 284         struct nouveau_bo *nvbo;
 285
 286         list_for_each_safe(entry, tmp, list) {
 287                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 288
 289                 nouveau_bo_fence(nvbo, fence);
 290
 291                 if (unlikely(nvbo->validate_mapped)) {
 292                         ttm_bo_kunmap(&nvbo->kmap);
 293                         nvbo->validate_mapped = false;
 294                 }
 295
 296                 list_del(&nvbo->entry);
 297                 nvbo->reserved_by = NULL;
 298                 ttm_bo_unreserve(&nvbo->bo);
 299                 drm_gem_object_unreference_unlocked(nvbo->gem);
 300         }
 301 }
 302
 303 static void
 304 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 305 {
 306         validate_fini_list(&op->vram_list, fence);
 307         validate_fini_list(&op->gart_list, fence);
 308         validate_fini_list(&op->both_list, fence);
 309 }
 310
 311 static int
 312 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 313               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 314               int nr_buffers, struct validate_op *op)
 315 {
 316         struct drm_device *dev = chan->dev;
 317         struct drm_nouveau_private *dev_priv = dev->dev_private;
 318         uint32_t sequence;
 319         int trycnt = 0;
 320         int ret, i;
 321
 322         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 323 retry:
 324         if (++trycnt > 100000) {
 325                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 326                 return -EINVAL;
 327         }
 328
 329         for (i = 0; i < nr_buffers; i++) {
 330                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 331                 struct drm_gem_object *gem;
 332                 struct nouveau_bo *nvbo;
 333
 334                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 335                 if (!gem) {
 336                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 337                         validate_fini(op, NULL);
 338                         return -ENOENT;
 339                 }
 340                 nvbo = gem->driver_private;
 341
 342                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 343                         NV_ERROR(dev, "multiple instances of buffer %d on "
 344                                       "validation list\n", b->handle);
 345                         validate_fini(op, NULL);
 346                         return -EINVAL;
 347                 }
 348
 349                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 350                 if (ret) {
 351                         validate_fini(op, NULL);
 352                         if (unlikely(ret == -EAGAIN))
 353                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 354                         drm_gem_object_unreference_unlocked(gem);
 355                         if (unlikely(ret)) {
 356                                 if (ret != -ERESTARTSYS)
 357                                         NV_ERROR(dev, "fail reserve\n");
 358                                 return ret;
 359                         }
 360                         goto retry;
 361                 }
 362
 363                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 364                 nvbo->reserved_by = file_priv;
 365                 nvbo->pbbo_index = i;
 366                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 367                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 368                         list_add_tail(&nvbo->entry, &op->both_list);
 369                 else
 370                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 371                         list_add_tail(&nvbo->entry, &op->vram_list);
 372                 else
 373                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 374                         list_add_tail(&nvbo->entry, &op->gart_list);
 375                 else {
 376                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 377                                  b->valid_domains);
 378                         list_add_tail(&nvbo->entry, &op->both_list);
 379                         validate_fini(op, NULL);
 380                         return -EINVAL;
 381                 }
 382         }
 383
 384         return 0;
 385 }
 386
 387 static int
 388 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 389 {
 390         struct nouveau_fence *fence = NULL;
 391         int ret = 0;
 392
 393         spin_lock(&nvbo->bo.bdev->fence_lock);
 394         if (nvbo->bo.sync_obj)
 395                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 396         spin_unlock(&nvbo->bo.bdev->fence_lock);
 397
 398         if (fence) {
 399                 ret = nouveau_fence_sync(fence, chan);
 400                 nouveau_fence_unref(&fence);
 401         }
 402
 403         return ret;
 404 }
 405
 406 static int
 407 validate_list(struct nouveau_channel *chan, struct list_head *list,
 408               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 409 {
 410         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 411         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 412                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 413         struct drm_device *dev = chan->dev;
 414         struct nouveau_bo *nvbo;
 415         int ret, relocs = 0;
 416
 417         list_for_each_entry(nvbo, list, entry) {
 418                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 419
 420                 ret = validate_sync(chan, nvbo);
 421                 if (unlikely(ret)) {
 422                         NV_ERROR(dev, "fail pre-validate sync\n");
 423                         return ret;
 424                 }
 425
 426                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 427                                              b->write_domains,
 428                                              b->valid_domains);
 429                 if (unlikely(ret)) {
 430                         NV_ERROR(dev, "fail set_domain\n");
 431                         return ret;
 432                 }
 433
 434                 ret = nouveau_bo_validate(nvbo, true, false, false);
 435                 if (unlikely(ret)) {
 436                         if (ret != -ERESTARTSYS)
 437                                 NV_ERROR(dev, "fail ttm_validate\n");
 438                         return ret;
 439                 }
 440
 441                 ret = validate_sync(chan, nvbo);
 442                 if (unlikely(ret)) {
 443                         NV_ERROR(dev, "fail post-validate sync\n");
 444                         return ret;
 445                 }
 446
 447                 if (dev_priv->card_type < NV_50) {
 448                         if (nvbo->bo.offset == b->presumed.offset &&
 449                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 450                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 451                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 452                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 453                                 continue;
 454
 455                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 456                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 457                         else
 458                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 459                         b->presumed.offset = nvbo->bo.offset;
 460                         b->presumed.valid = 0;
 461                         relocs++;
 462
 463                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 464                                              &b->presumed, sizeof(b->presumed)))
 465                                 return -EFAULT;
 466                 }
 467         }
 468
 469         return relocs;
 470 }
 471
 472 static int
 473 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 474                              struct drm_file *file_priv,
 475                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 476                              uint64_t user_buffers, int nr_buffers,
 477                              struct validate_op *op, int *apply_relocs)
 478 {
 479         struct drm_device *dev = chan->dev;
 480         int ret, relocs = 0;
 481
 482         INIT_LIST_HEAD(&op->vram_list);
 483         INIT_LIST_HEAD(&op->gart_list);
 484         INIT_LIST_HEAD(&op->both_list);
 485
 486         if (nr_buffers == 0)
 487                 return 0;
 488
 489         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 490         if (unlikely(ret)) {
 491                 if (ret != -ERESTARTSYS)
 492                         NV_ERROR(dev, "validate_init\n");
 493                 return ret;
 494         }
 495
 496         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 497         if (unlikely(ret < 0)) {
 498                 if (ret != -ERESTARTSYS)
 499                         NV_ERROR(dev, "validate vram_list\n");
 500                 validate_fini(op, NULL);
 501                 return ret;
 502         }
 503         relocs += ret;
 504
 505         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 506         if (unlikely(ret < 0)) {
 507                 if (ret != -ERESTARTSYS)
 508                         NV_ERROR(dev, "validate gart_list\n");
 509                 validate_fini(op, NULL);
 510                 return ret;
 511         }
 512         relocs += ret;
 513
 514         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 515         if (unlikely(ret < 0)) {
 516                 if (ret != -ERESTARTSYS)
 517                         NV_ERROR(dev, "validate both_list\n");
 518                 validate_fini(op, NULL);
 519                 return ret;
 520         }
 521         relocs += ret;
 522
 523         *apply_relocs = relocs;
 524         return 0;
 525 }
 526
 527 static inline void *
 528 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 529 {
 530         void *mem;
 531         void __user *userptr = (void __force __user *)(uintptr_t)user;
 532
 533         mem = kmalloc(nmemb * size, GFP_KERNEL);
 534         if (!mem)
 535                 return ERR_PTR(-ENOMEM);
 536
 537         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 538                 kfree(mem);
 539                 return ERR_PTR(-EFAULT);
 540         }
 541
 542         return mem;
 543 }
 544
 545 static int
 546 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 547                                 struct drm_nouveau_gem_pushbuf *req,
 548                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 549 {
 550         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 551         int ret = 0;
 552         unsigned i;
 553
 554         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 555         if (IS_ERR(reloc))
 556                 return PTR_ERR(reloc);
 557
 558         for (i = 0; i < req->nr_relocs; i++) {
 559                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 560                 struct drm_nouveau_gem_pushbuf_bo *b;
 561                 struct nouveau_bo *nvbo;
 562                 uint32_t data;
 563
 564                 if (unlikely(r->bo_index > req->nr_buffers)) {
 565                         NV_ERROR(dev, "reloc bo index invalid\n");
 566                         ret = -EINVAL;
 567                         break;
 568                 }
 569
 570                 b = &bo[r->bo_index];
 571                 if (b->presumed.valid)
 572                         continue;
 573
 574                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 575                         NV_ERROR(dev, "reloc container bo index invalid\n");
 576                         ret = -EINVAL;
 577                         break;
 578                 }
 579                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 580
 581                 if (unlikely(r->reloc_bo_offset + 4 >
 582                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 583                         NV_ERROR(dev, "reloc outside of bo\n");
 584                         ret = -EINVAL;
 585                         break;
 586                 }
 587
 588                 if (!nvbo->kmap.virtual) {
 589                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 590                                           &nvbo->kmap);
 591                         if (ret) {
 592                                 NV_ERROR(dev, "failed kmap for reloc\n");
 593                                 break;
 594                         }
 595                         nvbo->validate_mapped = true;
 596                 }
 597
 598                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 599                         data = b->presumed.offset + r->data;
 600                 else
 601                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 602                         data = (b->presumed.offset + r->data) >> 32;
 603                 else
 604                         data = r->data;
 605
 606                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 607                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 608                                 data |= r->tor;
 609                         else
 610                                 data |= r->vor;
 611                 }
 612
 613                 spin_lock(&nvbo->bo.bdev->fence_lock);
 614                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 615                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 616                 if (ret) {
 617                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 618                         break;
 619                 }
 620
 621                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 622         }
 623
 624         kfree(reloc);
 625         return ret;
 626 }
 627
 628 int
 629 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 630                           struct drm_file *file_priv)
 631 {
 632         struct drm_nouveau_private *dev_priv = dev->dev_private;
 633         struct drm_nouveau_gem_pushbuf *req = data;
 634         struct drm_nouveau_gem_pushbuf_push *push;
 635         struct drm_nouveau_gem_pushbuf_bo *bo;
 636         struct nouveau_channel *chan;
 637         struct validate_op op;
 638         struct nouveau_fence *fence = NULL;
 639         int i, j, ret = 0, do_reloc = 0;
 640
 641         chan = nouveau_channel_get(file_priv, req->channel);
 642         if (IS_ERR(chan))
 643                 return PTR_ERR(chan);
 644
 645         req->vram_available = dev_priv->fb_aper_free;
 646         req->gart_available = dev_priv->gart_info.aper_free;
 647         if (unlikely(req->nr_push == 0))
 648                 goto out_next;
 649
 650         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 651                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 652                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 653                 nouveau_channel_put(&chan);
 654                 return -EINVAL;
 655         }
 656
 657         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 658                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 659                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 660                 nouveau_channel_put(&chan);
 661                 return -EINVAL;
 662         }
 663
 664         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 665                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 666                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 667                 nouveau_channel_put(&chan);
 668                 return -EINVAL;
 669         }
 670
 671         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 672         if (IS_ERR(push)) {
 673                 nouveau_channel_put(&chan);
 674                 return PTR_ERR(push);
 675         }
 676
 677         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 678         if (IS_ERR(bo)) {
 679                 kfree(push);
 680                 nouveau_channel_put(&chan);
 681                 return PTR_ERR(bo);
 682         }
 683
 684         /* Ensure all push buffers are on validate list */
 685         for (i = 0; i < req->nr_push; i++) {
 686                 if (push[i].bo_index >= req->nr_buffers) {
 687                         NV_ERROR(dev, "push %d buffer not in list\n", i);
 688                         ret = -EINVAL;
 689                         goto out_prevalid;
 690                 }
 691         }
 692
 693         /* Validate buffer list */
 694         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 695                                            req->nr_buffers, &op, &do_reloc);
 696         if (ret) {
 697                 if (ret != -ERESTARTSYS)
 698                         NV_ERROR(dev, "validate: %d\n", ret);
 699                 goto out_prevalid;
 700         }
 701
 702         /* Apply any relocations that are required */
 703         if (do_reloc) {
 704                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 705                 if (ret) {
 706                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 707                         goto out;
 708                 }
 709         }
 710
 711         if (chan->dma.ib_max) {
 712                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 713                 if (ret) {
 714                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 715                         goto out;
 716                 }
 717
 718                 for (i = 0; i < req->nr_push; i++) {
 719                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 720                                 bo[push[i].bo_index].user_priv;
 721
 722                         nv50_dma_push(chan, nvbo, push[i].offset,
 723                                       push[i].length);
 724                 }
 725         } else
 726         if (dev_priv->chipset >= 0x25) {
 727                 ret = RING_SPACE(chan, req->nr_push * 2);
 728                 if (ret) {
 729                         NV_ERROR(dev, "cal_space: %d\n", ret);
 730                         goto out;
 731                 }
 732
 733                 for (i = 0; i < req->nr_push; i++) {
 734                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 735                                 bo[push[i].bo_index].user_priv;
 736                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 737
 738                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 739                                         push[i].offset) | 2);
 740                         OUT_RING(chan, 0);
 741                 }
 742         } else {
 743                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 744                 if (ret) {
 745                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 746                         goto out;
 747                 }
 748
 749                 for (i = 0; i < req->nr_push; i++) {
 750                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 751                                 bo[push[i].bo_index].user_priv;
 752                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 753                         uint32_t cmd;
 754
 755                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 756                         cmd |= 0x20000000;
 757                         if (unlikely(cmd != req->suffix0)) {
 758                                 if (!nvbo->kmap.virtual) {
 759                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 760                                                           nvbo->bo.mem.
 761                                                           num_pages,
 762                                                           &nvbo->kmap);
 763                                         if (ret) {
 764                                                 WIND_RING(chan);
 765                                                 goto out;
 766                                         }
 767                                         nvbo->validate_mapped = true;
 768                                 }
 769
 770                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 771                                                 push[i].length - 8) / 4, cmd);
 772                         }
 773
 774                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 775                                         push[i].offset) | 0x20000000);
 776                         OUT_RING(chan, 0);
 777                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 778                                 OUT_RING(chan, 0);
 779                 }
 780         }
 781
 782         ret = nouveau_fence_new(chan, &fence);
 783         if (ret) {
 784                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 785                 WIND_RING(chan);
 786                 goto out;
 787         }
 788
 789 out:
 790         validate_fini(&op, fence);
 791         nouveau_fence_unref(&fence);
 792
 793 out_prevalid:
 794         kfree(bo);
 795         kfree(push);
 796
 797 out_next:
 798         if (chan->dma.ib_max) {
 799                 req->suffix0 = 0x00000000;
 800                 req->suffix1 = 0x00000000;
 801         } else
 802         if (dev_priv->chipset >= 0x25) {
 803                 req->suffix0 = 0x00020000;
 804                 req->suffix1 = 0x00000000;
 805         } else {
 806                 req->suffix0 = 0x20000000 |
 807                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 808                 req->suffix1 = 0x00000000;
 809         }
 810
 811         nouveau_channel_put(&chan);
 812         return ret;
 813 }
 814
 815 static inline uint32_t
 816 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 817 {
 818         uint32_t flags = 0;
 819
 820         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 821                 flags |= TTM_PL_FLAG_VRAM;
 822         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 823                 flags |= TTM_PL_FLAG_TT;
 824
 825         return flags;
 826 }
 827
 828 int
 829 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 830                            struct drm_file *file_priv)
 831 {
 832         struct drm_nouveau_gem_cpu_prep *req = data;
 833         struct drm_gem_object *gem;
 834         struct nouveau_bo *nvbo;
 835         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 836         int ret = -EINVAL;
 837
 838         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 839         if (!gem)
 840                 return -ENOENT;
 841         nvbo = nouveau_gem_object(gem);
 842
 843         spin_lock(&nvbo->bo.bdev->fence_lock);
 844         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 845         spin_unlock(&nvbo->bo.bdev->fence_lock);
 846         drm_gem_object_unreference_unlocked(gem);
 847         return ret;
 848 }
 849
 850 int
 851 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 852                            struct drm_file *file_priv)
 853 {
 854         return 0;
 855 }
 856
 857 int
 858 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 859                        struct drm_file *file_priv)
 860 {
 861         struct drm_nouveau_gem_info *req = data;
 862         struct drm_gem_object *gem;
 863         int ret;
 864
 865         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 866         if (!gem)
 867                 return -ENOENT;
 868
 869         ret = nouveau_gem_info(file_priv, gem, req);
 870         drm_gem_object_unreference_unlocked(gem);
 871         return ret;
 872 }
 873