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