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
  27 #include <linux/dma-buf.h>
  28
  29 #include <subdev/fb.h>
  30
  31 #include "nouveau_drm.h"
  32 #include "nouveau_dma.h"
  33 #include "nouveau_fence.h"
  34 #include "nouveau_abi16.h"
  35
  36 #include "nouveau_ttm.h"
  37 #include "nouveau_gem.h"
  38
  39 int
  40 nouveau_gem_object_new(struct drm_gem_object *gem)
  41 {
  42         return 0;
  43 }
  44
  45 void
  46 nouveau_gem_object_del(struct drm_gem_object *gem)
  47 {
  48         struct nouveau_bo *nvbo = gem->driver_private;
  49         struct ttm_buffer_object *bo = &nvbo->bo;
  50
  51         if (!nvbo)
  52                 return;
  53         nvbo->gem = NULL;
  54
  55         if (unlikely(nvbo->pin_refcnt)) {
  56                 nvbo->pin_refcnt = 1;
  57                 nouveau_bo_unpin(nvbo);
  58         }
  59
  60         if (gem->import_attach)
  61                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  62
  63         ttm_bo_unref(&bo);
  64
  65         drm_gem_object_release(gem);
  66         kfree(gem);
  67 }
  68
  69 int
  70 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  71 {
  72         struct nouveau_cli *cli = nouveau_cli(file_priv);
  73         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  74         struct nouveau_vma *vma;
  75         int ret;
  76
  77         if (!cli->base.vm)
  78                 return 0;
  79
  80         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  81         if (ret)
  82                 return ret;
  83
  84         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  85         if (!vma) {
  86                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  87                 if (!vma) {
  88                         ret = -ENOMEM;
  89                         goto out;
  90                 }
  91
  92                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  93                 if (ret) {
  94                         kfree(vma);
  95                         goto out;
  96                 }
  97         } else {
  98                 vma->refcount++;
  99         }
 100
 101 out:
 102         ttm_bo_unreserve(&nvbo->bo);
 103         return ret;
 104 }
 105
 106 void
 107 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 108 {
 109         struct nouveau_cli *cli = nouveau_cli(file_priv);
 110         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 111         struct nouveau_vma *vma;
 112         int ret;
 113
 114         if (!cli->base.vm)
 115                 return;
 116
 117         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 118         if (ret)
 119                 return;
 120
 121         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 122         if (vma) {
 123                 if (--vma->refcount == 0) {
 124                         nouveau_bo_vma_del(nvbo, vma);
 125                         kfree(vma);
 126                 }
 127         }
 128         ttm_bo_unreserve(&nvbo->bo);
 129 }
 130
 131 int
 132 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 133                 uint32_t tile_mode, uint32_t tile_flags,
 134                 struct nouveau_bo **pnvbo)
 135 {
 136         struct nouveau_drm *drm = nouveau_drm(dev);
 137         struct nouveau_bo *nvbo;
 138         u32 flags = 0;
 139         int ret;
 140
 141         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 142                 flags |= TTM_PL_FLAG_VRAM;
 143         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 144                 flags |= TTM_PL_FLAG_TT;
 145         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 146                 flags |= TTM_PL_FLAG_SYSTEM;
 147
 148         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 149                              tile_flags, NULL, pnvbo);
 150         if (ret)
 151                 return ret;
 152         nvbo = *pnvbo;
 153
 154         /* we restrict allowed domains on nv50+ to only the types
 155          * that were requested at creation time.  not possibly on
 156          * earlier chips without busting the ABI.
 157          */
 158         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 159                               NOUVEAU_GEM_DOMAIN_GART;
 160         if (nv_device(drm->device)->card_type >= NV_50)
 161                 nvbo->valid_domains &= domain;
 162
 163         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 164         if (!nvbo->gem) {
 165                 nouveau_bo_ref(NULL, pnvbo);
 166                 return -ENOMEM;
 167         }
 168
 169         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 170         nvbo->gem->driver_private = nvbo;
 171         return 0;
 172 }
 173
 174 static int
 175 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 176                  struct drm_nouveau_gem_info *rep)
 177 {
 178         struct nouveau_cli *cli = nouveau_cli(file_priv);
 179         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 180         struct nouveau_vma *vma;
 181
 182         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 183                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 184         else
 185                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 186
 187         rep->offset = nvbo->bo.offset;
 188         if (cli->base.vm) {
 189                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 190                 if (!vma)
 191                         return -EINVAL;
 192
 193                 rep->offset = vma->offset;
 194         }
 195
 196         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 197         rep->map_handle = nvbo->bo.addr_space_offset;
 198         rep->tile_mode = nvbo->tile_mode;
 199         rep->tile_flags = nvbo->tile_flags;
 200         return 0;
 201 }
 202
 203 int
 204 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 205                       struct drm_file *file_priv)
 206 {
 207         struct nouveau_drm *drm = nouveau_drm(dev);
 208         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 209         struct drm_nouveau_gem_new *req = data;
 210         struct nouveau_bo *nvbo = NULL;
 211         int ret = 0;
 212
 213         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 214
 215         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 216                 NV_ERROR(drm, "bad page flags: 0x%08x\n", req->info.tile_flags);
 217                 return -EINVAL;
 218         }
 219
 220         ret = nouveau_gem_new(dev, req->info.size, req->align,
 221                               req->info.domain, req->info.tile_mode,
 222                               req->info.tile_flags, &nvbo);
 223         if (ret)
 224                 return ret;
 225
 226         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 227         if (ret == 0) {
 228                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 229                 if (ret)
 230                         drm_gem_handle_delete(file_priv, req->info.handle);
 231         }
 232
 233         /* drop reference from allocate - handle holds it now */
 234         drm_gem_object_unreference_unlocked(nvbo->gem);
 235         return ret;
 236 }
 237
 238 static int
 239 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 240                        uint32_t write_domains, uint32_t valid_domains)
 241 {
 242         struct nouveau_bo *nvbo = gem->driver_private;
 243         struct ttm_buffer_object *bo = &nvbo->bo;
 244         uint32_t domains = valid_domains & nvbo->valid_domains &
 245                 (write_domains ? write_domains : read_domains);
 246         uint32_t pref_flags = 0, valid_flags = 0;
 247
 248         if (!domains)
 249                 return -EINVAL;
 250
 251         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 252                 valid_flags |= TTM_PL_FLAG_VRAM;
 253
 254         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 255                 valid_flags |= TTM_PL_FLAG_TT;
 256
 257         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 258             bo->mem.mem_type == TTM_PL_VRAM)
 259                 pref_flags |= TTM_PL_FLAG_VRAM;
 260
 261         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 262                  bo->mem.mem_type == TTM_PL_TT)
 263                 pref_flags |= TTM_PL_FLAG_TT;
 264
 265         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 266                 pref_flags |= TTM_PL_FLAG_VRAM;
 267
 268         else
 269                 pref_flags |= TTM_PL_FLAG_TT;
 270
 271         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 272
 273         return 0;
 274 }
 275
 276 struct validate_op {
 277         struct list_head vram_list;
 278         struct list_head gart_list;
 279         struct list_head both_list;
 280 };
 281
 282 static void
 283 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 284 {
 285         struct list_head *entry, *tmp;
 286         struct nouveau_bo *nvbo;
 287
 288         list_for_each_safe(entry, tmp, list) {
 289                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 290
 291                 nouveau_bo_fence(nvbo, fence);
 292
 293                 if (unlikely(nvbo->validate_mapped)) {
 294                         ttm_bo_kunmap(&nvbo->kmap);
 295                         nvbo->validate_mapped = false;
 296                 }
 297
 298                 list_del(&nvbo->entry);
 299                 nvbo->reserved_by = NULL;
 300                 ttm_bo_unreserve(&nvbo->bo);
 301                 drm_gem_object_unreference_unlocked(nvbo->gem);
 302         }
 303 }
 304
 305 static void
 306 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 307 {
 308         validate_fini_list(&op->vram_list, fence);
 309         validate_fini_list(&op->gart_list, fence);
 310         validate_fini_list(&op->both_list, fence);
 311 }
 312
 313 static int
 314 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 315               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 316               int nr_buffers, struct validate_op *op)
 317 {
 318         struct drm_device *dev = chan->drm->dev;
 319         struct nouveau_drm *drm = nouveau_drm(dev);
 320         uint32_t sequence;
 321         int trycnt = 0;
 322         int ret, i;
 323
 324         sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 325 retry:
 326         if (++trycnt > 100000) {
 327                 NV_ERROR(drm, "%s failed and gave up.\n", __func__);
 328                 return -EINVAL;
 329         }
 330
 331         for (i = 0; i < nr_buffers; i++) {
 332                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 333                 struct drm_gem_object *gem;
 334                 struct nouveau_bo *nvbo;
 335
 336                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 337                 if (!gem) {
 338                         NV_ERROR(drm, "Unknown handle 0x%08x\n", b->handle);
 339                         validate_fini(op, NULL);
 340                         return -ENOENT;
 341                 }
 342                 nvbo = gem->driver_private;
 343
 344                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 345                         NV_ERROR(drm, "multiple instances of buffer %d on "
 346                                       "validation list\n", b->handle);
 347                         drm_gem_object_unreference_unlocked(gem);
 348                         validate_fini(op, NULL);
 349                         return -EINVAL;
 350                 }
 351
 352                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 353                 if (ret) {
 354                         validate_fini(op, NULL);
 355                         if (unlikely(ret == -EAGAIN))
 356                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 357                         drm_gem_object_unreference_unlocked(gem);
 358                         if (unlikely(ret)) {
 359                                 if (ret != -ERESTARTSYS)
 360                                         NV_ERROR(drm, "fail reserve\n");
 361                                 return ret;
 362                         }
 363                         goto retry;
 364                 }
 365
 366                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 367                 nvbo->reserved_by = file_priv;
 368                 nvbo->pbbo_index = i;
 369                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 370                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 371                         list_add_tail(&nvbo->entry, &op->both_list);
 372                 else
 373                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 374                         list_add_tail(&nvbo->entry, &op->vram_list);
 375                 else
 376                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 377                         list_add_tail(&nvbo->entry, &op->gart_list);
 378                 else {
 379                         NV_ERROR(drm, "invalid valid domains: 0x%08x\n",
 380                                  b->valid_domains);
 381                         list_add_tail(&nvbo->entry, &op->both_list);
 382                         validate_fini(op, NULL);
 383                         return -EINVAL;
 384                 }
 385         }
 386
 387         return 0;
 388 }
 389
 390 static int
 391 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 392 {
 393         struct nouveau_fence *fence = NULL;
 394         int ret = 0;
 395
 396         spin_lock(&nvbo->bo.bdev->fence_lock);
 397         if (nvbo->bo.sync_obj)
 398                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 399         spin_unlock(&nvbo->bo.bdev->fence_lock);
 400
 401         if (fence) {
 402                 ret = nouveau_fence_sync(fence, chan);
 403                 nouveau_fence_unref(&fence);
 404         }
 405
 406         return ret;
 407 }
 408
 409 static int
 410 validate_list(struct nouveau_channel *chan, struct list_head *list,
 411               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 412 {
 413         struct nouveau_drm *drm = chan->drm;
 414         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 415                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 416         struct nouveau_bo *nvbo;
 417         int ret, relocs = 0;
 418
 419         list_for_each_entry(nvbo, list, entry) {
 420                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 421
 422                 ret = validate_sync(chan, nvbo);
 423                 if (unlikely(ret)) {
 424                         NV_ERROR(drm, "fail pre-validate sync\n");
 425                         return ret;
 426                 }
 427
 428                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 429                                              b->write_domains,
 430                                              b->valid_domains);
 431                 if (unlikely(ret)) {
 432                         NV_ERROR(drm, "fail set_domain\n");
 433                         return ret;
 434                 }
 435
 436                 ret = nouveau_bo_validate(nvbo, true, false, false);
 437                 if (unlikely(ret)) {
 438                         if (ret != -ERESTARTSYS)
 439                                 NV_ERROR(drm, "fail ttm_validate\n");
 440                         return ret;
 441                 }
 442
 443                 ret = validate_sync(chan, nvbo);
 444                 if (unlikely(ret)) {
 445                         NV_ERROR(drm, "fail post-validate sync\n");
 446                         return ret;
 447                 }
 448
 449                 if (nv_device(drm->device)->card_type < NV_50) {
 450                         if (nvbo->bo.offset == b->presumed.offset &&
 451                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 452                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 453                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 454                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 455                                 continue;
 456
 457                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 458                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 459                         else
 460                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 461                         b->presumed.offset = nvbo->bo.offset;
 462                         b->presumed.valid = 0;
 463                         relocs++;
 464
 465                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 466                                              &b->presumed, sizeof(b->presumed)))
 467                                 return -EFAULT;
 468                 }
 469         }
 470
 471         return relocs;
 472 }
 473
 474 static int
 475 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 476                              struct drm_file *file_priv,
 477                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 478                              uint64_t user_buffers, int nr_buffers,
 479                              struct validate_op *op, int *apply_relocs)
 480 {
 481         struct nouveau_drm *drm = chan->drm;
 482         int ret, relocs = 0;
 483
 484         INIT_LIST_HEAD(&op->vram_list);
 485         INIT_LIST_HEAD(&op->gart_list);
 486         INIT_LIST_HEAD(&op->both_list);
 487
 488         if (nr_buffers == 0)
 489                 return 0;
 490
 491         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 492         if (unlikely(ret)) {
 493                 if (ret != -ERESTARTSYS)
 494                         NV_ERROR(drm, "validate_init\n");
 495                 return ret;
 496         }
 497
 498         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 499         if (unlikely(ret < 0)) {
 500                 if (ret != -ERESTARTSYS)
 501                         NV_ERROR(drm, "validate vram_list\n");
 502                 validate_fini(op, NULL);
 503                 return ret;
 504         }
 505         relocs += ret;
 506
 507         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 508         if (unlikely(ret < 0)) {
 509                 if (ret != -ERESTARTSYS)
 510                         NV_ERROR(drm, "validate gart_list\n");
 511                 validate_fini(op, NULL);
 512                 return ret;
 513         }
 514         relocs += ret;
 515
 516         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 517         if (unlikely(ret < 0)) {
 518                 if (ret != -ERESTARTSYS)
 519                         NV_ERROR(drm, "validate both_list\n");
 520                 validate_fini(op, NULL);
 521                 return ret;
 522         }
 523         relocs += ret;
 524
 525         *apply_relocs = relocs;
 526         return 0;
 527 }
 528
 529 static inline void *
 530 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 531 {
 532         void *mem;
 533         void __user *userptr = (void __force __user *)(uintptr_t)user;
 534
 535         mem = kmalloc(nmemb * size, GFP_KERNEL);
 536         if (!mem)
 537                 return ERR_PTR(-ENOMEM);
 538
 539         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 540                 kfree(mem);
 541                 return ERR_PTR(-EFAULT);
 542         }
 543
 544         return mem;
 545 }
 546
 547 static int
 548 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 549                                 struct drm_nouveau_gem_pushbuf *req,
 550                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 551 {
 552         struct nouveau_drm *drm = nouveau_drm(dev);
 553         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 554         int ret = 0;
 555         unsigned i;
 556
 557         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 558         if (IS_ERR(reloc))
 559                 return PTR_ERR(reloc);
 560
 561         for (i = 0; i < req->nr_relocs; i++) {
 562                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 563                 struct drm_nouveau_gem_pushbuf_bo *b;
 564                 struct nouveau_bo *nvbo;
 565                 uint32_t data;
 566
 567                 if (unlikely(r->bo_index > req->nr_buffers)) {
 568                         NV_ERROR(drm, "reloc bo index invalid\n");
 569                         ret = -EINVAL;
 570                         break;
 571                 }
 572
 573                 b = &bo[r->bo_index];
 574                 if (b->presumed.valid)
 575                         continue;
 576
 577                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 578                         NV_ERROR(drm, "reloc container bo index invalid\n");
 579                         ret = -EINVAL;
 580                         break;
 581                 }
 582                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 583
 584                 if (unlikely(r->reloc_bo_offset + 4 >
 585                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 586                         NV_ERROR(drm, "reloc outside of bo\n");
 587                         ret = -EINVAL;
 588                         break;
 589                 }
 590
 591                 if (!nvbo->kmap.virtual) {
 592                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 593                                           &nvbo->kmap);
 594                         if (ret) {
 595                                 NV_ERROR(drm, "failed kmap for reloc\n");
 596                                 break;
 597                         }
 598                         nvbo->validate_mapped = true;
 599                 }
 600
 601                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 602                         data = b->presumed.offset + r->data;
 603                 else
 604                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 605                         data = (b->presumed.offset + r->data) >> 32;
 606                 else
 607                         data = r->data;
 608
 609                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 610                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 611                                 data |= r->tor;
 612                         else
 613                                 data |= r->vor;
 614                 }
 615
 616                 spin_lock(&nvbo->bo.bdev->fence_lock);
 617                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 618                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 619                 if (ret) {
 620                         NV_ERROR(drm, "reloc wait_idle failed: %d\n", ret);
 621                         break;
 622                 }
 623
 624                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 625         }
 626
 627         kfree(reloc);
 628         return ret;
 629 }
 630
 631 int
 632 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 633                           struct drm_file *file_priv)
 634 {
 635         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 636         struct nouveau_abi16_chan *temp;
 637         struct nouveau_drm *drm = nouveau_drm(dev);
 638         struct drm_nouveau_gem_pushbuf *req = data;
 639         struct drm_nouveau_gem_pushbuf_push *push;
 640         struct drm_nouveau_gem_pushbuf_bo *bo;
 641         struct nouveau_channel *chan = NULL;
 642         struct validate_op op;
 643         struct nouveau_fence *fence = NULL;
 644         int i, j, ret = 0, do_reloc = 0;
 645
 646         if (unlikely(!abi16))
 647                 return -ENOMEM;
 648
 649         list_for_each_entry(temp, &abi16->channels, head) {
 650                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 651                         chan = temp->chan;
 652                         break;
 653                 }
 654         }
 655
 656         if (!chan)
 657                 return nouveau_abi16_put(abi16, -ENOENT);
 658
 659         req->vram_available = drm->gem.vram_available;
 660         req->gart_available = drm->gem.gart_available;
 661         if (unlikely(req->nr_push == 0))
 662                 goto out_next;
 663
 664         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 665                 NV_ERROR(drm, "pushbuf push count exceeds limit: %d max %d\n",
 666                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 667                 return nouveau_abi16_put(abi16, -EINVAL);
 668         }
 669
 670         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 671                 NV_ERROR(drm, "pushbuf bo count exceeds limit: %d max %d\n",
 672                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 673                 return nouveau_abi16_put(abi16, -EINVAL);
 674         }
 675
 676         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 677                 NV_ERROR(drm, "pushbuf reloc count exceeds limit: %d max %d\n",
 678                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 679                 return nouveau_abi16_put(abi16, -EINVAL);
 680         }
 681
 682         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 683         if (IS_ERR(push))
 684                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 685
 686         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 687         if (IS_ERR(bo)) {
 688                 kfree(push);
 689                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 690         }
 691
 692         /* Ensure all push buffers are on validate list */
 693         for (i = 0; i < req->nr_push; i++) {
 694                 if (push[i].bo_index >= req->nr_buffers) {
 695                         NV_ERROR(drm, "push %d buffer not in list\n", i);
 696                         ret = -EINVAL;
 697                         goto out_prevalid;
 698                 }
 699         }
 700
 701         /* Validate buffer list */
 702         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 703                                            req->nr_buffers, &op, &do_reloc);
 704         if (ret) {
 705                 if (ret != -ERESTARTSYS)
 706                         NV_ERROR(drm, "validate: %d\n", ret);
 707                 goto out_prevalid;
 708         }
 709
 710         /* Apply any relocations that are required */
 711         if (do_reloc) {
 712                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 713                 if (ret) {
 714                         NV_ERROR(drm, "reloc apply: %d\n", ret);
 715                         goto out;
 716                 }
 717         }
 718
 719         if (chan->dma.ib_max) {
 720                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 721                 if (ret) {
 722                         NV_ERROR(drm, "nv50cal_space: %d\n", ret);
 723                         goto out;
 724                 }
 725
 726                 for (i = 0; i < req->nr_push; i++) {
 727                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 728                                 bo[push[i].bo_index].user_priv;
 729
 730                         nv50_dma_push(chan, nvbo, push[i].offset,
 731                                       push[i].length);
 732                 }
 733         } else
 734         if (nv_device(drm->device)->chipset >= 0x25) {
 735                 ret = RING_SPACE(chan, req->nr_push * 2);
 736                 if (ret) {
 737                         NV_ERROR(drm, "cal_space: %d\n", ret);
 738                         goto out;
 739                 }
 740
 741                 for (i = 0; i < req->nr_push; i++) {
 742                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 743                                 bo[push[i].bo_index].user_priv;
 744
 745                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 746                         OUT_RING(chan, 0);
 747                 }
 748         } else {
 749                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 750                 if (ret) {
 751                         NV_ERROR(drm, "jmp_space: %d\n", ret);
 752                         goto out;
 753                 }
 754
 755                 for (i = 0; i < req->nr_push; i++) {
 756                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 757                                 bo[push[i].bo_index].user_priv;
 758                         uint32_t cmd;
 759
 760                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 761                         cmd |= 0x20000000;
 762                         if (unlikely(cmd != req->suffix0)) {
 763                                 if (!nvbo->kmap.virtual) {
 764                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 765                                                           nvbo->bo.mem.
 766                                                           num_pages,
 767                                                           &nvbo->kmap);
 768                                         if (ret) {
 769                                                 WIND_RING(chan);
 770                                                 goto out;
 771                                         }
 772                                         nvbo->validate_mapped = true;
 773                                 }
 774
 775                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 776                                                 push[i].length - 8) / 4, cmd);
 777                         }
 778
 779                         OUT_RING(chan, 0x20000000 |
 780                                       (nvbo->bo.offset + push[i].offset));
 781                         OUT_RING(chan, 0);
 782                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 783                                 OUT_RING(chan, 0);
 784                 }
 785         }
 786
 787         ret = nouveau_fence_new(chan, &fence);
 788         if (ret) {
 789                 NV_ERROR(drm, "error fencing pushbuf: %d\n", ret);
 790                 WIND_RING(chan);
 791                 goto out;
 792         }
 793
 794 out:
 795         validate_fini(&op, fence);
 796         nouveau_fence_unref(&fence);
 797
 798 out_prevalid:
 799         kfree(bo);
 800         kfree(push);
 801
 802 out_next:
 803         if (chan->dma.ib_max) {
 804                 req->suffix0 = 0x00000000;
 805                 req->suffix1 = 0x00000000;
 806         } else
 807         if (nv_device(drm->device)->chipset >= 0x25) {
 808                 req->suffix0 = 0x00020000;
 809                 req->suffix1 = 0x00000000;
 810         } else {
 811                 req->suffix0 = 0x20000000 |
 812                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 813                 req->suffix1 = 0x00000000;
 814         }
 815
 816         return nouveau_abi16_put(abi16, ret);
 817 }
 818
 819 static inline uint32_t
 820 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 821 {
 822         uint32_t flags = 0;
 823
 824         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 825                 flags |= TTM_PL_FLAG_VRAM;
 826         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 827                 flags |= TTM_PL_FLAG_TT;
 828
 829         return flags;
 830 }
 831
 832 int
 833 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 834                            struct drm_file *file_priv)
 835 {
 836         struct drm_nouveau_gem_cpu_prep *req = data;
 837         struct drm_gem_object *gem;
 838         struct nouveau_bo *nvbo;
 839         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 840         int ret = -EINVAL;
 841
 842         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 843         if (!gem)
 844                 return -ENOENT;
 845         nvbo = nouveau_gem_object(gem);
 846
 847         spin_lock(&nvbo->bo.bdev->fence_lock);
 848         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 849         spin_unlock(&nvbo->bo.bdev->fence_lock);
 850         drm_gem_object_unreference_unlocked(gem);
 851         return ret;
 852 }
 853
 854 int
 855 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 856                            struct drm_file *file_priv)
 857 {
 858         return 0;
 859 }
 860
 861 int
 862 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 863                        struct drm_file *file_priv)
 864 {
 865         struct drm_nouveau_gem_info *req = data;
 866         struct drm_gem_object *gem;
 867         int ret;
 868
 869         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 870         if (!gem)
 871                 return -ENOENT;
 872
 873         ret = nouveau_gem_info(file_priv, gem, req);
 874         drm_gem_object_unreference_unlocked(gem);
 875         return ret;
 876 }
 877