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 #include <nouveau_drm.h>
  29
  30 #include <subdev/fb.h>
  31
  32 #include "nouveau_drm.h"
  33 #include "nouveau_dma.h"
  34 #include "nouveau_fence.h"
  35 #include "nouveau_abi16.h"
  36
  37 #include "nouveau_ttm.h"
  38 #include "nouveau_gem.h"
  39
  40 int
  41 nouveau_gem_object_new(struct drm_gem_object *gem)
  42 {
  43         return 0;
  44 }
  45
  46 void
  47 nouveau_gem_object_del(struct drm_gem_object *gem)
  48 {
  49         struct nouveau_bo *nvbo = gem->driver_private;
  50         struct ttm_buffer_object *bo = &nvbo->bo;
  51
  52         if (!nvbo)
  53                 return;
  54         nvbo->gem = NULL;
  55
  56         if (unlikely(nvbo->pin_refcnt)) {
  57                 nvbo->pin_refcnt = 1;
  58                 nouveau_bo_unpin(nvbo);
  59         }
  60
  61         if (gem->import_attach)
  62                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  63
  64         ttm_bo_unref(&bo);
  65
  66         drm_gem_object_release(gem);
  67         kfree(gem);
  68 }
  69
  70 int
  71 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  72 {
  73         struct nouveau_cli *cli = nouveau_cli(file_priv);
  74         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  75         struct nouveau_vma *vma;
  76         int ret;
  77
  78         if (!cli->base.vm)
  79                 return 0;
  80
  81         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  82         if (ret)
  83                 return ret;
  84
  85         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  86         if (!vma) {
  87                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  88                 if (!vma) {
  89                         ret = -ENOMEM;
  90                         goto out;
  91                 }
  92
  93                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  94                 if (ret) {
  95                         kfree(vma);
  96                         goto out;
  97                 }
  98         } else {
  99                 vma->refcount++;
 100         }
 101
 102 out:
 103         ttm_bo_unreserve(&nvbo->bo);
 104         return ret;
 105 }
 106
 107 void
 108 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 109 {
 110         struct nouveau_cli *cli = nouveau_cli(file_priv);
 111         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 112         struct nouveau_vma *vma;
 113         int ret;
 114
 115         if (!cli->base.vm)
 116                 return;
 117
 118         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 119         if (ret)
 120                 return;
 121
 122         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 123         if (vma) {
 124                 if (--vma->refcount == 0) {
 125                         nouveau_bo_vma_del(nvbo, vma);
 126                         kfree(vma);
 127                 }
 128         }
 129         ttm_bo_unreserve(&nvbo->bo);
 130 }
 131
 132 int
 133 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 134                 uint32_t tile_mode, uint32_t tile_flags,
 135                 struct nouveau_bo **pnvbo)
 136 {
 137         struct nouveau_drm *drm = nouveau_drm(dev);
 138         struct nouveau_bo *nvbo;
 139         u32 flags = 0;
 140         int ret;
 141
 142         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 143                 flags |= TTM_PL_FLAG_VRAM;
 144         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 145                 flags |= TTM_PL_FLAG_TT;
 146         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 147                 flags |= TTM_PL_FLAG_SYSTEM;
 148
 149         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 150                              tile_flags, NULL, pnvbo);
 151         if (ret)
 152                 return ret;
 153         nvbo = *pnvbo;
 154
 155         /* we restrict allowed domains on nv50+ to only the types
 156          * that were requested at creation time.  not possibly on
 157          * earlier chips without busting the ABI.
 158          */
 159         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 160                               NOUVEAU_GEM_DOMAIN_GART;
 161         if (nv_device(drm->device)->card_type >= NV_50)
 162                 nvbo->valid_domains &= domain;
 163
 164         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 165         if (!nvbo->gem) {
 166                 nouveau_bo_ref(NULL, pnvbo);
 167                 return -ENOMEM;
 168         }
 169
 170         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 171         nvbo->gem->driver_private = nvbo;
 172         return 0;
 173 }
 174
 175 static int
 176 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 177                  struct drm_nouveau_gem_info *rep)
 178 {
 179         struct nouveau_cli *cli = nouveau_cli(file_priv);
 180         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 181         struct nouveau_vma *vma;
 182
 183         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 184                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 185         else
 186                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 187
 188         rep->offset = nvbo->bo.offset;
 189         if (cli->base.vm) {
 190                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 191                 if (!vma)
 192                         return -EINVAL;
 193
 194                 rep->offset = vma->offset;
 195         }
 196
 197         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 198         rep->map_handle = nvbo->bo.addr_space_offset;
 199         rep->tile_mode = nvbo->tile_mode;
 200         rep->tile_flags = nvbo->tile_flags;
 201         return 0;
 202 }
 203
 204 int
 205 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 206                       struct drm_file *file_priv)
 207 {
 208         struct nouveau_drm *drm = nouveau_drm(dev);
 209         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 210         struct drm_nouveau_gem_new *req = data;
 211         struct nouveau_bo *nvbo = NULL;
 212         int ret = 0;
 213
 214         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 215
 216         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 217                 NV_ERROR(drm, "bad page flags: 0x%08x\n", req->info.tile_flags);
 218                 return -EINVAL;
 219         }
 220
 221         ret = nouveau_gem_new(dev, req->info.size, req->align,
 222                               req->info.domain, req->info.tile_mode,
 223                               req->info.tile_flags, &nvbo);
 224         if (ret)
 225                 return ret;
 226
 227         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 228         if (ret == 0) {
 229                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 230                 if (ret)
 231                         drm_gem_handle_delete(file_priv, req->info.handle);
 232         }
 233
 234         /* drop reference from allocate - handle holds it now */
 235         drm_gem_object_unreference_unlocked(nvbo->gem);
 236         return ret;
 237 }
 238
 239 static int
 240 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 241                        uint32_t write_domains, uint32_t valid_domains)
 242 {
 243         struct nouveau_bo *nvbo = gem->driver_private;
 244         struct ttm_buffer_object *bo = &nvbo->bo;
 245         uint32_t domains = valid_domains & nvbo->valid_domains &
 246                 (write_domains ? write_domains : read_domains);
 247         uint32_t pref_flags = 0, valid_flags = 0;
 248
 249         if (!domains)
 250                 return -EINVAL;
 251
 252         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 253                 valid_flags |= TTM_PL_FLAG_VRAM;
 254
 255         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 256                 valid_flags |= TTM_PL_FLAG_TT;
 257
 258         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 259             bo->mem.mem_type == TTM_PL_VRAM)
 260                 pref_flags |= TTM_PL_FLAG_VRAM;
 261
 262         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 263                  bo->mem.mem_type == TTM_PL_TT)
 264                 pref_flags |= TTM_PL_FLAG_TT;
 265
 266         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 267                 pref_flags |= TTM_PL_FLAG_VRAM;
 268
 269         else
 270                 pref_flags |= TTM_PL_FLAG_TT;
 271
 272         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 273
 274         return 0;
 275 }
 276
 277 struct validate_op {
 278         struct list_head vram_list;
 279         struct list_head gart_list;
 280         struct list_head both_list;
 281 };
 282
 283 static void
 284 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 285 {
 286         struct list_head *entry, *tmp;
 287         struct nouveau_bo *nvbo;
 288
 289         list_for_each_safe(entry, tmp, list) {
 290                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 291
 292                 nouveau_bo_fence(nvbo, fence);
 293
 294                 if (unlikely(nvbo->validate_mapped)) {
 295                         ttm_bo_kunmap(&nvbo->kmap);
 296                         nvbo->validate_mapped = false;
 297                 }
 298
 299                 list_del(&nvbo->entry);
 300                 nvbo->reserved_by = NULL;
 301                 ttm_bo_unreserve(&nvbo->bo);
 302                 drm_gem_object_unreference_unlocked(nvbo->gem);
 303         }
 304 }
 305
 306 static void
 307 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 308 {
 309         validate_fini_list(&op->vram_list, fence);
 310         validate_fini_list(&op->gart_list, fence);
 311         validate_fini_list(&op->both_list, fence);
 312 }
 313
 314 static int
 315 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 316               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 317               int nr_buffers, struct validate_op *op)
 318 {
 319         struct drm_device *dev = chan->drm->dev;
 320         struct nouveau_drm *drm = nouveau_drm(dev);
 321         uint32_t sequence;
 322         int trycnt = 0;
 323         int ret, i;
 324
 325         sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 326 retry:
 327         if (++trycnt > 100000) {
 328                 NV_ERROR(drm, "%s failed and gave up.\n", __func__);
 329                 return -EINVAL;
 330         }
 331
 332         for (i = 0; i < nr_buffers; i++) {
 333                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 334                 struct drm_gem_object *gem;
 335                 struct nouveau_bo *nvbo;
 336
 337                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 338                 if (!gem) {
 339                         NV_ERROR(drm, "Unknown handle 0x%08x\n", b->handle);
 340                         validate_fini(op, NULL);
 341                         return -ENOENT;
 342                 }
 343                 nvbo = gem->driver_private;
 344
 345                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 346                         NV_ERROR(drm, "multiple instances of buffer %d on "
 347                                       "validation list\n", b->handle);
 348                         drm_gem_object_unreference_unlocked(gem);
 349                         validate_fini(op, NULL);
 350                         return -EINVAL;
 351                 }
 352
 353                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 354                 if (ret) {
 355                         validate_fini(op, NULL);
 356                         if (unlikely(ret == -EAGAIN))
 357                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 358                         drm_gem_object_unreference_unlocked(gem);
 359                         if (unlikely(ret)) {
 360                                 if (ret != -ERESTARTSYS)
 361                                         NV_ERROR(drm, "fail reserve\n");
 362                                 return ret;
 363                         }
 364                         goto retry;
 365                 }
 366
 367                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 368                 nvbo->reserved_by = file_priv;
 369                 nvbo->pbbo_index = i;
 370                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 371                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 372                         list_add_tail(&nvbo->entry, &op->both_list);
 373                 else
 374                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 375                         list_add_tail(&nvbo->entry, &op->vram_list);
 376                 else
 377                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 378                         list_add_tail(&nvbo->entry, &op->gart_list);
 379                 else {
 380                         NV_ERROR(drm, "invalid valid domains: 0x%08x\n",
 381                                  b->valid_domains);
 382                         list_add_tail(&nvbo->entry, &op->both_list);
 383                         validate_fini(op, NULL);
 384                         return -EINVAL;
 385                 }
 386         }
 387
 388         return 0;
 389 }
 390
 391 static int
 392 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 393 {
 394         struct nouveau_fence *fence = NULL;
 395         int ret = 0;
 396
 397         spin_lock(&nvbo->bo.bdev->fence_lock);
 398         if (nvbo->bo.sync_obj)
 399                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 400         spin_unlock(&nvbo->bo.bdev->fence_lock);
 401
 402         if (fence) {
 403                 ret = nouveau_fence_sync(fence, chan);
 404                 nouveau_fence_unref(&fence);
 405         }
 406
 407         return ret;
 408 }
 409
 410 static int
 411 validate_list(struct nouveau_channel *chan, struct list_head *list,
 412               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 413 {
 414         struct nouveau_drm *drm = chan->drm;
 415         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 416                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 417         struct nouveau_bo *nvbo;
 418         int ret, relocs = 0;
 419
 420         list_for_each_entry(nvbo, list, entry) {
 421                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 422
 423                 ret = validate_sync(chan, nvbo);
 424                 if (unlikely(ret)) {
 425                         NV_ERROR(drm, "fail pre-validate sync\n");
 426                         return ret;
 427                 }
 428
 429                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 430                                              b->write_domains,
 431                                              b->valid_domains);
 432                 if (unlikely(ret)) {
 433                         NV_ERROR(drm, "fail set_domain\n");
 434                         return ret;
 435                 }
 436
 437                 ret = nouveau_bo_validate(nvbo, true, false, false);
 438                 if (unlikely(ret)) {
 439                         if (ret != -ERESTARTSYS)
 440                                 NV_ERROR(drm, "fail ttm_validate\n");
 441                         return ret;
 442                 }
 443
 444                 ret = validate_sync(chan, nvbo);
 445                 if (unlikely(ret)) {
 446                         NV_ERROR(drm, "fail post-validate sync\n");
 447                         return ret;
 448                 }
 449
 450                 if (nv_device(drm->device)->card_type < NV_50) {
 451                         if (nvbo->bo.offset == b->presumed.offset &&
 452                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 453                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 454                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 455                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 456                                 continue;
 457
 458                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 459                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 460                         else
 461                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 462                         b->presumed.offset = nvbo->bo.offset;
 463                         b->presumed.valid = 0;
 464                         relocs++;
 465
 466                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 467                                              &b->presumed, sizeof(b->presumed)))
 468                                 return -EFAULT;
 469                 }
 470         }
 471
 472         return relocs;
 473 }
 474
 475 static int
 476 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 477                              struct drm_file *file_priv,
 478                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 479                              uint64_t user_buffers, int nr_buffers,
 480                              struct validate_op *op, int *apply_relocs)
 481 {
 482         struct nouveau_drm *drm = chan->drm;
 483         int ret, relocs = 0;
 484
 485         INIT_LIST_HEAD(&op->vram_list);
 486         INIT_LIST_HEAD(&op->gart_list);
 487         INIT_LIST_HEAD(&op->both_list);
 488
 489         if (nr_buffers == 0)
 490                 return 0;
 491
 492         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 493         if (unlikely(ret)) {
 494                 if (ret != -ERESTARTSYS)
 495                         NV_ERROR(drm, "validate_init\n");
 496                 return ret;
 497         }
 498
 499         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 500         if (unlikely(ret < 0)) {
 501                 if (ret != -ERESTARTSYS)
 502                         NV_ERROR(drm, "validate vram_list\n");
 503                 validate_fini(op, NULL);
 504                 return ret;
 505         }
 506         relocs += ret;
 507
 508         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 509         if (unlikely(ret < 0)) {
 510                 if (ret != -ERESTARTSYS)
 511                         NV_ERROR(drm, "validate gart_list\n");
 512                 validate_fini(op, NULL);
 513                 return ret;
 514         }
 515         relocs += ret;
 516
 517         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 518         if (unlikely(ret < 0)) {
 519                 if (ret != -ERESTARTSYS)
 520                         NV_ERROR(drm, "validate both_list\n");
 521                 validate_fini(op, NULL);
 522                 return ret;
 523         }
 524         relocs += ret;
 525
 526         *apply_relocs = relocs;
 527         return 0;
 528 }
 529
 530 static inline void *
 531 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 532 {
 533         void *mem;
 534         void __user *userptr = (void __force __user *)(uintptr_t)user;
 535
 536         mem = kmalloc(nmemb * size, GFP_KERNEL);
 537         if (!mem)
 538                 return ERR_PTR(-ENOMEM);
 539
 540         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 541                 kfree(mem);
 542                 return ERR_PTR(-EFAULT);
 543         }
 544
 545         return mem;
 546 }
 547
 548 static int
 549 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 550                                 struct drm_nouveau_gem_pushbuf *req,
 551                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 552 {
 553         struct nouveau_drm *drm = nouveau_newpriv(dev);
 554         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 555         int ret = 0;
 556         unsigned i;
 557
 558         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 559         if (IS_ERR(reloc))
 560                 return PTR_ERR(reloc);
 561
 562         for (i = 0; i < req->nr_relocs; i++) {
 563                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 564                 struct drm_nouveau_gem_pushbuf_bo *b;
 565                 struct nouveau_bo *nvbo;
 566                 uint32_t data;
 567
 568                 if (unlikely(r->bo_index > req->nr_buffers)) {
 569                         NV_ERROR(drm, "reloc bo index invalid\n");
 570                         ret = -EINVAL;
 571                         break;
 572                 }
 573
 574                 b = &bo[r->bo_index];
 575                 if (b->presumed.valid)
 576                         continue;
 577
 578                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 579                         NV_ERROR(drm, "reloc container bo index invalid\n");
 580                         ret = -EINVAL;
 581                         break;
 582                 }
 583                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 584
 585                 if (unlikely(r->reloc_bo_offset + 4 >
 586                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 587                         NV_ERROR(drm, "reloc outside of bo\n");
 588                         ret = -EINVAL;
 589                         break;
 590                 }
 591
 592                 if (!nvbo->kmap.virtual) {
 593                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 594                                           &nvbo->kmap);
 595                         if (ret) {
 596                                 NV_ERROR(drm, "failed kmap for reloc\n");
 597                                 break;
 598                         }
 599                         nvbo->validate_mapped = true;
 600                 }
 601
 602                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 603                         data = b->presumed.offset + r->data;
 604                 else
 605                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 606                         data = (b->presumed.offset + r->data) >> 32;
 607                 else
 608                         data = r->data;
 609
 610                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 611                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 612                                 data |= r->tor;
 613                         else
 614                                 data |= r->vor;
 615                 }
 616
 617                 spin_lock(&nvbo->bo.bdev->fence_lock);
 618                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 619                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 620                 if (ret) {
 621                         NV_ERROR(drm, "reloc wait_idle failed: %d\n", ret);
 622                         break;
 623                 }
 624
 625                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 626         }
 627
 628         kfree(reloc);
 629         return ret;
 630 }
 631
 632 int
 633 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 634                           struct drm_file *file_priv)
 635 {
 636         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 637         struct nouveau_abi16_chan *temp;
 638         struct nouveau_drm *drm = nouveau_drm(dev);
 639         struct drm_nouveau_gem_pushbuf *req = data;
 640         struct drm_nouveau_gem_pushbuf_push *push;
 641         struct drm_nouveau_gem_pushbuf_bo *bo;
 642         struct nouveau_channel *chan = NULL;
 643         struct validate_op op;
 644         struct nouveau_fence *fence = NULL;
 645         int i, j, ret = 0, do_reloc = 0;
 646
 647         if (unlikely(!abi16))
 648                 return -ENOMEM;
 649
 650         list_for_each_entry(temp, &abi16->channels, head) {
 651                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 652                         chan = temp->chan;
 653                         break;
 654                 }
 655         }
 656
 657         if (!chan)
 658                 return nouveau_abi16_put(abi16, -ENOENT);
 659
 660         req->vram_available = drm->gem.vram_available;
 661         req->gart_available = drm->gem.gart_available;
 662         if (unlikely(req->nr_push == 0))
 663                 goto out_next;
 664
 665         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 666                 NV_ERROR(drm, "pushbuf push count exceeds limit: %d max %d\n",
 667                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 668                 return nouveau_abi16_put(abi16, -EINVAL);
 669         }
 670
 671         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 672                 NV_ERROR(drm, "pushbuf bo count exceeds limit: %d max %d\n",
 673                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 674                 return nouveau_abi16_put(abi16, -EINVAL);
 675         }
 676
 677         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 678                 NV_ERROR(drm, "pushbuf reloc count exceeds limit: %d max %d\n",
 679                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 680                 return nouveau_abi16_put(abi16, -EINVAL);
 681         }
 682
 683         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 684         if (IS_ERR(push))
 685                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 686
 687         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 688         if (IS_ERR(bo)) {
 689                 kfree(push);
 690                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 691         }
 692
 693         /* Ensure all push buffers are on validate list */
 694         for (i = 0; i < req->nr_push; i++) {
 695                 if (push[i].bo_index >= req->nr_buffers) {
 696                         NV_ERROR(drm, "push %d buffer not in list\n", i);
 697                         ret = -EINVAL;
 698                         goto out_prevalid;
 699                 }
 700         }
 701
 702         /* Validate buffer list */
 703         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 704                                            req->nr_buffers, &op, &do_reloc);
 705         if (ret) {
 706                 if (ret != -ERESTARTSYS)
 707                         NV_ERROR(drm, "validate: %d\n", ret);
 708                 goto out_prevalid;
 709         }
 710
 711         /* Apply any relocations that are required */
 712         if (do_reloc) {
 713                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 714                 if (ret) {
 715                         NV_ERROR(drm, "reloc apply: %d\n", ret);
 716                         goto out;
 717                 }
 718         }
 719
 720         if (chan->dma.ib_max) {
 721                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 722                 if (ret) {
 723                         NV_ERROR(drm, "nv50cal_space: %d\n", ret);
 724                         goto out;
 725                 }
 726
 727                 for (i = 0; i < req->nr_push; i++) {
 728                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 729                                 bo[push[i].bo_index].user_priv;
 730
 731                         nv50_dma_push(chan, nvbo, push[i].offset,
 732                                       push[i].length);
 733                 }
 734         } else
 735         if (nv_device(drm->device)->chipset >= 0x25) {
 736                 ret = RING_SPACE(chan, req->nr_push * 2);
 737                 if (ret) {
 738                         NV_ERROR(drm, "cal_space: %d\n", ret);
 739                         goto out;
 740                 }
 741
 742                 for (i = 0; i < req->nr_push; i++) {
 743                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 744                                 bo[push[i].bo_index].user_priv;
 745
 746                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 747                         OUT_RING(chan, 0);
 748                 }
 749         } else {
 750                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 751                 if (ret) {
 752                         NV_ERROR(drm, "jmp_space: %d\n", ret);
 753                         goto out;
 754                 }
 755
 756                 for (i = 0; i < req->nr_push; i++) {
 757                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 758                                 bo[push[i].bo_index].user_priv;
 759                         uint32_t cmd;
 760
 761                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 762                         cmd |= 0x20000000;
 763                         if (unlikely(cmd != req->suffix0)) {
 764                                 if (!nvbo->kmap.virtual) {
 765                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 766                                                           nvbo->bo.mem.
 767                                                           num_pages,
 768                                                           &nvbo->kmap);
 769                                         if (ret) {
 770                                                 WIND_RING(chan);
 771                                                 goto out;
 772                                         }
 773                                         nvbo->validate_mapped = true;
 774                                 }
 775
 776                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 777                                                 push[i].length - 8) / 4, cmd);
 778                         }
 779
 780                         OUT_RING(chan, 0x20000000 |
 781                                       (nvbo->bo.offset + push[i].offset));
 782                         OUT_RING(chan, 0);
 783                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 784                                 OUT_RING(chan, 0);
 785                 }
 786         }
 787
 788         ret = nouveau_fence_new(chan, &fence);
 789         if (ret) {
 790                 NV_ERROR(drm, "error fencing pushbuf: %d\n", ret);
 791                 WIND_RING(chan);
 792                 goto out;
 793         }
 794
 795 out:
 796         validate_fini(&op, fence);
 797         nouveau_fence_unref(&fence);
 798
 799 out_prevalid:
 800         kfree(bo);
 801         kfree(push);
 802
 803 out_next:
 804         if (chan->dma.ib_max) {
 805                 req->suffix0 = 0x00000000;
 806                 req->suffix1 = 0x00000000;
 807         } else
 808         if (nv_device(drm->device)->chipset >= 0x25) {
 809                 req->suffix0 = 0x00020000;
 810                 req->suffix1 = 0x00000000;
 811         } else {
 812                 req->suffix0 = 0x20000000 |
 813                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 814                 req->suffix1 = 0x00000000;
 815         }
 816
 817         return nouveau_abi16_put(abi16, ret);
 818 }
 819
 820 static inline uint32_t
 821 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 822 {
 823         uint32_t flags = 0;
 824
 825         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 826                 flags |= TTM_PL_FLAG_VRAM;
 827         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 828                 flags |= TTM_PL_FLAG_TT;
 829
 830         return flags;
 831 }
 832
 833 int
 834 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 835                            struct drm_file *file_priv)
 836 {
 837         struct drm_nouveau_gem_cpu_prep *req = data;
 838         struct drm_gem_object *gem;
 839         struct nouveau_bo *nvbo;
 840         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 841         int ret = -EINVAL;
 842
 843         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 844         if (!gem)
 845                 return -ENOENT;
 846         nvbo = nouveau_gem_object(gem);
 847
 848         spin_lock(&nvbo->bo.bdev->fence_lock);
 849         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 850         spin_unlock(&nvbo->bo.bdev->fence_lock);
 851         drm_gem_object_unreference_unlocked(gem);
 852         return ret;
 853 }
 854
 855 int
 856 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 857                            struct drm_file *file_priv)
 858 {
 859         return 0;
 860 }
 861
 862 int
 863 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 864                        struct drm_file *file_priv)
 865 {
 866         struct drm_nouveau_gem_info *req = data;
 867         struct drm_gem_object *gem;
 868         int ret;
 869
 870         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 871         if (!gem)
 872                 return -ENOENT;
 873
 874         ret = nouveau_gem_info(file_priv, gem, req);
 875         drm_gem_object_unreference_unlocked(gem);
 876         return ret;
 877 }
 878