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 <subdev/fb.h>
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_fence.h"
  32 #include "nouveau_abi16.h"
  33
  34 #include "nouveau_ttm.h"
  35 #include "nouveau_gem.h"
  36
  37 int
  38 nouveau_gem_object_new(struct drm_gem_object *gem)
  39 {
  40         return 0;
  41 }
  42
  43 void
  44 nouveau_gem_object_del(struct drm_gem_object *gem)
  45 {
  46         struct nouveau_bo *nvbo = gem->driver_private;
  47         struct ttm_buffer_object *bo = &nvbo->bo;
  48
  49         if (!nvbo)
  50                 return;
  51         nvbo->gem = NULL;
  52
  53         if (unlikely(nvbo->pin_refcnt)) {
  54                 nvbo->pin_refcnt = 1;
  55                 nouveau_bo_unpin(nvbo);
  56         }
  57
  58         if (gem->import_attach)
  59                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  60
  61         ttm_bo_unref(&bo);
  62
  63         drm_gem_object_release(gem);
  64         kfree(gem);
  65 }
  66
  67 int
  68 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  69 {
  70         struct nouveau_cli *cli = nouveau_cli(file_priv);
  71         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  72         struct nouveau_vma *vma;
  73         int ret;
  74
  75         if (!cli->base.vm)
  76                 return 0;
  77
  78         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  79         if (ret)
  80                 return ret;
  81
  82         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  83         if (!vma) {
  84                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  85                 if (!vma) {
  86                         ret = -ENOMEM;
  87                         goto out;
  88                 }
  89
  90                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  91                 if (ret) {
  92                         kfree(vma);
  93                         goto out;
  94                 }
  95         } else {
  96                 vma->refcount++;
  97         }
  98
  99 out:
 100         ttm_bo_unreserve(&nvbo->bo);
 101         return ret;
 102 }
 103
 104 void
 105 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 106 {
 107         struct nouveau_cli *cli = nouveau_cli(file_priv);
 108         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 109         struct nouveau_vma *vma;
 110         int ret;
 111
 112         if (!cli->base.vm)
 113                 return;
 114
 115         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 116         if (ret)
 117                 return;
 118
 119         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 120         if (vma) {
 121                 if (--vma->refcount == 0) {
 122                         nouveau_bo_vma_del(nvbo, vma);
 123                         kfree(vma);
 124                 }
 125         }
 126         ttm_bo_unreserve(&nvbo->bo);
 127 }
 128
 129 int
 130 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 131                 uint32_t tile_mode, uint32_t tile_flags,
 132                 struct nouveau_bo **pnvbo)
 133 {
 134         struct nouveau_drm *drm = nouveau_drm(dev);
 135         struct nouveau_bo *nvbo;
 136         u32 flags = 0;
 137         int ret;
 138
 139         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 140                 flags |= TTM_PL_FLAG_VRAM;
 141         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 142                 flags |= TTM_PL_FLAG_TT;
 143         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 144                 flags |= TTM_PL_FLAG_SYSTEM;
 145
 146         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 147                              tile_flags, NULL, pnvbo);
 148         if (ret)
 149                 return ret;
 150         nvbo = *pnvbo;
 151
 152         /* we restrict allowed domains on nv50+ to only the types
 153          * that were requested at creation time.  not possibly on
 154          * earlier chips without busting the ABI.
 155          */
 156         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 157                               NOUVEAU_GEM_DOMAIN_GART;
 158         if (nv_device(drm->device)->card_type >= NV_50)
 159                 nvbo->valid_domains &= domain;
 160
 161         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 162         if (!nvbo->gem) {
 163                 nouveau_bo_ref(NULL, pnvbo);
 164                 return -ENOMEM;
 165         }
 166
 167         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 168         nvbo->gem->driver_private = nvbo;
 169         return 0;
 170 }
 171
 172 static int
 173 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 174                  struct drm_nouveau_gem_info *rep)
 175 {
 176         struct nouveau_cli *cli = nouveau_cli(file_priv);
 177         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 178         struct nouveau_vma *vma;
 179
 180         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 181                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 182         else
 183                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 184
 185         rep->offset = nvbo->bo.offset;
 186         if (cli->base.vm) {
 187                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 188                 if (!vma)
 189                         return -EINVAL;
 190
 191                 rep->offset = vma->offset;
 192         }
 193
 194         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 195         rep->map_handle = nvbo->bo.addr_space_offset;
 196         rep->tile_mode = nvbo->tile_mode;
 197         rep->tile_flags = nvbo->tile_flags;
 198         return 0;
 199 }
 200
 201 int
 202 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 203                       struct drm_file *file_priv)
 204 {
 205         struct nouveau_drm *drm = nouveau_drm(dev);
 206         struct nouveau_cli *cli = nouveau_cli(file_priv);
 207         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 208         struct drm_nouveau_gem_new *req = data;
 209         struct nouveau_bo *nvbo = NULL;
 210         int ret = 0;
 211
 212         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 213
 214         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 215                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 216                 return -EINVAL;
 217         }
 218
 219         ret = nouveau_gem_new(dev, req->info.size, req->align,
 220                               req->info.domain, req->info.tile_mode,
 221                               req->info.tile_flags, &nvbo);
 222         if (ret)
 223                 return ret;
 224
 225         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 226         if (ret == 0) {
 227                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 228                 if (ret)
 229                         drm_gem_handle_delete(file_priv, req->info.handle);
 230         }
 231
 232         /* drop reference from allocate - handle holds it now */
 233         drm_gem_object_unreference_unlocked(nvbo->gem);
 234         return ret;
 235 }
 236
 237 static int
 238 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 239                        uint32_t write_domains, uint32_t valid_domains)
 240 {
 241         struct nouveau_bo *nvbo = gem->driver_private;
 242         struct ttm_buffer_object *bo = &nvbo->bo;
 243         uint32_t domains = valid_domains & nvbo->valid_domains &
 244                 (write_domains ? write_domains : read_domains);
 245         uint32_t pref_flags = 0, valid_flags = 0;
 246
 247         if (!domains)
 248                 return -EINVAL;
 249
 250         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 251                 valid_flags |= TTM_PL_FLAG_VRAM;
 252
 253         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 254                 valid_flags |= TTM_PL_FLAG_TT;
 255
 256         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 257             bo->mem.mem_type == TTM_PL_VRAM)
 258                 pref_flags |= TTM_PL_FLAG_VRAM;
 259
 260         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 261                  bo->mem.mem_type == TTM_PL_TT)
 262                 pref_flags |= TTM_PL_FLAG_TT;
 263
 264         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 265                 pref_flags |= TTM_PL_FLAG_VRAM;
 266
 267         else
 268                 pref_flags |= TTM_PL_FLAG_TT;
 269
 270         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 271
 272         return 0;
 273 }
 274
 275 struct validate_op {
 276         struct list_head vram_list;
 277         struct list_head gart_list;
 278         struct list_head both_list;
 279 };
 280
 281 static void
 282 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 283 {
 284         struct list_head *entry, *tmp;
 285         struct nouveau_bo *nvbo;
 286
 287         list_for_each_safe(entry, tmp, list) {
 288                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 289
 290                 nouveau_bo_fence(nvbo, fence);
 291
 292                 if (unlikely(nvbo->validate_mapped)) {
 293                         ttm_bo_kunmap(&nvbo->kmap);
 294                         nvbo->validate_mapped = false;
 295                 }
 296
 297                 list_del(&nvbo->entry);
 298                 nvbo->reserved_by = NULL;
 299                 ttm_bo_unreserve(&nvbo->bo);
 300                 drm_gem_object_unreference_unlocked(nvbo->gem);
 301         }
 302 }
 303
 304 static void
 305 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 306 {
 307         validate_fini_list(&op->vram_list, fence);
 308         validate_fini_list(&op->gart_list, fence);
 309         validate_fini_list(&op->both_list, fence);
 310 }
 311
 312 static int
 313 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 314               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 315               int nr_buffers, struct validate_op *op)
 316 {
 317         struct nouveau_cli *cli = nouveau_cli(file_priv);
 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         struct nouveau_bo *res_bo = NULL;
 324
 325         sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 326 retry:
 327         if (++trycnt > 100000) {
 328                 NV_ERROR(cli, "%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(cli, "Unknown handle 0x%08x\n", b->handle);
 340                         validate_fini(op, NULL);
 341                         return -ENOENT;
 342                 }
 343                 nvbo = gem->driver_private;
 344                 if (nvbo == res_bo) {
 345                         res_bo = NULL;
 346                         drm_gem_object_unreference_unlocked(gem);
 347                         continue;
 348                 }
 349
 350                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 351                         NV_ERROR(cli, "multiple instances of buffer %d on "
 352                                       "validation list\n", b->handle);
 353                         drm_gem_object_unreference_unlocked(gem);
 354                         validate_fini(op, NULL);
 355                         return -EINVAL;
 356                 }
 357
 358                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 359                 if (ret) {
 360                         validate_fini(op, NULL);
 361                         if (unlikely(ret == -EAGAIN)) {
 362                                 sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 363                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 364                                                               sequence);
 365                                 if (!ret)
 366                                         res_bo = nvbo;
 367                         }
 368                         if (unlikely(ret)) {
 369                                 drm_gem_object_unreference_unlocked(gem);
 370                                 if (ret != -ERESTARTSYS)
 371                                         NV_ERROR(cli, "fail reserve\n");
 372                                 return ret;
 373                         }
 374                 }
 375
 376                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 377                 nvbo->reserved_by = file_priv;
 378                 nvbo->pbbo_index = i;
 379                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 380                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 381                         list_add_tail(&nvbo->entry, &op->both_list);
 382                 else
 383                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 384                         list_add_tail(&nvbo->entry, &op->vram_list);
 385                 else
 386                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 387                         list_add_tail(&nvbo->entry, &op->gart_list);
 388                 else {
 389                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 390                                  b->valid_domains);
 391                         list_add_tail(&nvbo->entry, &op->both_list);
 392                         validate_fini(op, NULL);
 393                         return -EINVAL;
 394                 }
 395                 if (nvbo == res_bo)
 396                         goto retry;
 397         }
 398
 399         return 0;
 400 }
 401
 402 static int
 403 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 404 {
 405         struct nouveau_fence *fence = NULL;
 406         int ret = 0;
 407
 408         spin_lock(&nvbo->bo.bdev->fence_lock);
 409         if (nvbo->bo.sync_obj)
 410                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 411         spin_unlock(&nvbo->bo.bdev->fence_lock);
 412
 413         if (fence) {
 414                 ret = nouveau_fence_sync(fence, chan);
 415                 nouveau_fence_unref(&fence);
 416         }
 417
 418         return ret;
 419 }
 420
 421 static int
 422 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 423               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 424               uint64_t user_pbbo_ptr)
 425 {
 426         struct nouveau_drm *drm = chan->drm;
 427         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 428                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 429         struct nouveau_bo *nvbo;
 430         int ret, relocs = 0;
 431
 432         list_for_each_entry(nvbo, list, entry) {
 433                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 434
 435                 ret = validate_sync(chan, nvbo);
 436                 if (unlikely(ret)) {
 437                         NV_ERROR(cli, "fail pre-validate sync\n");
 438                         return ret;
 439                 }
 440
 441                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 442                                              b->write_domains,
 443                                              b->valid_domains);
 444                 if (unlikely(ret)) {
 445                         NV_ERROR(cli, "fail set_domain\n");
 446                         return ret;
 447                 }
 448
 449                 ret = nouveau_bo_validate(nvbo, true, false);
 450                 if (unlikely(ret)) {
 451                         if (ret != -ERESTARTSYS)
 452                                 NV_ERROR(cli, "fail ttm_validate\n");
 453                         return ret;
 454                 }
 455
 456                 ret = validate_sync(chan, nvbo);
 457                 if (unlikely(ret)) {
 458                         NV_ERROR(cli, "fail post-validate sync\n");
 459                         return ret;
 460                 }
 461
 462                 if (nv_device(drm->device)->card_type < NV_50) {
 463                         if (nvbo->bo.offset == b->presumed.offset &&
 464                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 465                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 466                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 467                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 468                                 continue;
 469
 470                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 471                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 472                         else
 473                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 474                         b->presumed.offset = nvbo->bo.offset;
 475                         b->presumed.valid = 0;
 476                         relocs++;
 477
 478                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 479                                              &b->presumed, sizeof(b->presumed)))
 480                                 return -EFAULT;
 481                 }
 482         }
 483
 484         return relocs;
 485 }
 486
 487 static int
 488 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 489                              struct drm_file *file_priv,
 490                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 491                              uint64_t user_buffers, int nr_buffers,
 492                              struct validate_op *op, int *apply_relocs)
 493 {
 494         struct nouveau_cli *cli = nouveau_cli(file_priv);
 495         int ret, relocs = 0;
 496
 497         INIT_LIST_HEAD(&op->vram_list);
 498         INIT_LIST_HEAD(&op->gart_list);
 499         INIT_LIST_HEAD(&op->both_list);
 500
 501         if (nr_buffers == 0)
 502                 return 0;
 503
 504         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 505         if (unlikely(ret)) {
 506                 if (ret != -ERESTARTSYS)
 507                         NV_ERROR(cli, "validate_init\n");
 508                 return ret;
 509         }
 510
 511         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 512         if (unlikely(ret < 0)) {
 513                 if (ret != -ERESTARTSYS)
 514                         NV_ERROR(cli, "validate vram_list\n");
 515                 validate_fini(op, NULL);
 516                 return ret;
 517         }
 518         relocs += ret;
 519
 520         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 521         if (unlikely(ret < 0)) {
 522                 if (ret != -ERESTARTSYS)
 523                         NV_ERROR(cli, "validate gart_list\n");
 524                 validate_fini(op, NULL);
 525                 return ret;
 526         }
 527         relocs += ret;
 528
 529         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 530         if (unlikely(ret < 0)) {
 531                 if (ret != -ERESTARTSYS)
 532                         NV_ERROR(cli, "validate both_list\n");
 533                 validate_fini(op, NULL);
 534                 return ret;
 535         }
 536         relocs += ret;
 537
 538         *apply_relocs = relocs;
 539         return 0;
 540 }
 541
 542 static inline void *
 543 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 544 {
 545         void *mem;
 546         void __user *userptr = (void __force __user *)(uintptr_t)user;
 547
 548         mem = kmalloc(nmemb * size, GFP_KERNEL);
 549         if (!mem)
 550                 return ERR_PTR(-ENOMEM);
 551
 552         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 553                 kfree(mem);
 554                 return ERR_PTR(-EFAULT);
 555         }
 556
 557         return mem;
 558 }
 559
 560 static int
 561 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 562                                 struct drm_nouveau_gem_pushbuf *req,
 563                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 564 {
 565         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 566         int ret = 0;
 567         unsigned i;
 568
 569         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 570         if (IS_ERR(reloc))
 571                 return PTR_ERR(reloc);
 572
 573         for (i = 0; i < req->nr_relocs; i++) {
 574                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 575                 struct drm_nouveau_gem_pushbuf_bo *b;
 576                 struct nouveau_bo *nvbo;
 577                 uint32_t data;
 578
 579                 if (unlikely(r->bo_index > req->nr_buffers)) {
 580                         NV_ERROR(cli, "reloc bo index invalid\n");
 581                         ret = -EINVAL;
 582                         break;
 583                 }
 584
 585                 b = &bo[r->bo_index];
 586                 if (b->presumed.valid)
 587                         continue;
 588
 589                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 590                         NV_ERROR(cli, "reloc container bo index invalid\n");
 591                         ret = -EINVAL;
 592                         break;
 593                 }
 594                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 595
 596                 if (unlikely(r->reloc_bo_offset + 4 >
 597                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 598                         NV_ERROR(cli, "reloc outside of bo\n");
 599                         ret = -EINVAL;
 600                         break;
 601                 }
 602
 603                 if (!nvbo->kmap.virtual) {
 604                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 605                                           &nvbo->kmap);
 606                         if (ret) {
 607                                 NV_ERROR(cli, "failed kmap for reloc\n");
 608                                 break;
 609                         }
 610                         nvbo->validate_mapped = true;
 611                 }
 612
 613                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 614                         data = b->presumed.offset + r->data;
 615                 else
 616                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 617                         data = (b->presumed.offset + r->data) >> 32;
 618                 else
 619                         data = r->data;
 620
 621                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 622                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 623                                 data |= r->tor;
 624                         else
 625                                 data |= r->vor;
 626                 }
 627
 628                 spin_lock(&nvbo->bo.bdev->fence_lock);
 629                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 630                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 631                 if (ret) {
 632                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 633                         break;
 634                 }
 635
 636                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 637         }
 638
 639         kfree(reloc);
 640         return ret;
 641 }
 642
 643 int
 644 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 645                           struct drm_file *file_priv)
 646 {
 647         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 648         struct nouveau_cli *cli = nouveau_cli(file_priv);
 649         struct nouveau_abi16_chan *temp;
 650         struct nouveau_drm *drm = nouveau_drm(dev);
 651         struct drm_nouveau_gem_pushbuf *req = data;
 652         struct drm_nouveau_gem_pushbuf_push *push;
 653         struct drm_nouveau_gem_pushbuf_bo *bo;
 654         struct nouveau_channel *chan = NULL;
 655         struct validate_op op;
 656         struct nouveau_fence *fence = NULL;
 657         int i, j, ret = 0, do_reloc = 0;
 658
 659         if (unlikely(!abi16))
 660                 return -ENOMEM;
 661
 662         list_for_each_entry(temp, &abi16->channels, head) {
 663                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 664                         chan = temp->chan;
 665                         break;
 666                 }
 667         }
 668
 669         if (!chan)
 670                 return nouveau_abi16_put(abi16, -ENOENT);
 671
 672         req->vram_available = drm->gem.vram_available;
 673         req->gart_available = drm->gem.gart_available;
 674         if (unlikely(req->nr_push == 0))
 675                 goto out_next;
 676
 677         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 678                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 679                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 680                 return nouveau_abi16_put(abi16, -EINVAL);
 681         }
 682
 683         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 684                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 685                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 686                 return nouveau_abi16_put(abi16, -EINVAL);
 687         }
 688
 689         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 690                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 691                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 692                 return nouveau_abi16_put(abi16, -EINVAL);
 693         }
 694
 695         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 696         if (IS_ERR(push))
 697                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 698
 699         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 700         if (IS_ERR(bo)) {
 701                 kfree(push);
 702                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 703         }
 704
 705         /* Ensure all push buffers are on validate list */
 706         for (i = 0; i < req->nr_push; i++) {
 707                 if (push[i].bo_index >= req->nr_buffers) {
 708                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 709                         ret = -EINVAL;
 710                         goto out_prevalid;
 711                 }
 712         }
 713
 714         /* Validate buffer list */
 715         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 716                                            req->nr_buffers, &op, &do_reloc);
 717         if (ret) {
 718                 if (ret != -ERESTARTSYS)
 719                         NV_ERROR(cli, "validate: %d\n", ret);
 720                 goto out_prevalid;
 721         }
 722
 723         /* Apply any relocations that are required */
 724         if (do_reloc) {
 725                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 726                 if (ret) {
 727                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 728                         goto out;
 729                 }
 730         }
 731
 732         if (chan->dma.ib_max) {
 733                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 734                 if (ret) {
 735                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 736                         goto out;
 737                 }
 738
 739                 for (i = 0; i < req->nr_push; i++) {
 740                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 741                                 bo[push[i].bo_index].user_priv;
 742
 743                         nv50_dma_push(chan, nvbo, push[i].offset,
 744                                       push[i].length);
 745                 }
 746         } else
 747         if (nv_device(drm->device)->chipset >= 0x25) {
 748                 ret = RING_SPACE(chan, req->nr_push * 2);
 749                 if (ret) {
 750                         NV_ERROR(cli, "cal_space: %d\n", ret);
 751                         goto out;
 752                 }
 753
 754                 for (i = 0; i < req->nr_push; i++) {
 755                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 756                                 bo[push[i].bo_index].user_priv;
 757
 758                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 759                         OUT_RING(chan, 0);
 760                 }
 761         } else {
 762                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 763                 if (ret) {
 764                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 765                         goto out;
 766                 }
 767
 768                 for (i = 0; i < req->nr_push; i++) {
 769                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 770                                 bo[push[i].bo_index].user_priv;
 771                         uint32_t cmd;
 772
 773                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 774                         cmd |= 0x20000000;
 775                         if (unlikely(cmd != req->suffix0)) {
 776                                 if (!nvbo->kmap.virtual) {
 777                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 778                                                           nvbo->bo.mem.
 779                                                           num_pages,
 780                                                           &nvbo->kmap);
 781                                         if (ret) {
 782                                                 WIND_RING(chan);
 783                                                 goto out;
 784                                         }
 785                                         nvbo->validate_mapped = true;
 786                                 }
 787
 788                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 789                                                 push[i].length - 8) / 4, cmd);
 790                         }
 791
 792                         OUT_RING(chan, 0x20000000 |
 793                                       (nvbo->bo.offset + push[i].offset));
 794                         OUT_RING(chan, 0);
 795                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 796                                 OUT_RING(chan, 0);
 797                 }
 798         }
 799
 800         ret = nouveau_fence_new(chan, false, &fence);
 801         if (ret) {
 802                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 803                 WIND_RING(chan);
 804                 goto out;
 805         }
 806
 807 out:
 808         validate_fini(&op, fence);
 809         nouveau_fence_unref(&fence);
 810
 811 out_prevalid:
 812         kfree(bo);
 813         kfree(push);
 814
 815 out_next:
 816         if (chan->dma.ib_max) {
 817                 req->suffix0 = 0x00000000;
 818                 req->suffix1 = 0x00000000;
 819         } else
 820         if (nv_device(drm->device)->chipset >= 0x25) {
 821                 req->suffix0 = 0x00020000;
 822                 req->suffix1 = 0x00000000;
 823         } else {
 824                 req->suffix0 = 0x20000000 |
 825                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 826                 req->suffix1 = 0x00000000;
 827         }
 828
 829         return nouveau_abi16_put(abi16, ret);
 830 }
 831
 832 static inline uint32_t
 833 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 834 {
 835         uint32_t flags = 0;
 836
 837         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 838                 flags |= TTM_PL_FLAG_VRAM;
 839         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 840                 flags |= TTM_PL_FLAG_TT;
 841
 842         return flags;
 843 }
 844
 845 int
 846 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 847                            struct drm_file *file_priv)
 848 {
 849         struct drm_nouveau_gem_cpu_prep *req = data;
 850         struct drm_gem_object *gem;
 851         struct nouveau_bo *nvbo;
 852         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 853         int ret = -EINVAL;
 854
 855         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 856         if (!gem)
 857                 return -ENOENT;
 858         nvbo = nouveau_gem_object(gem);
 859
 860         spin_lock(&nvbo->bo.bdev->fence_lock);
 861         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 862         spin_unlock(&nvbo->bo.bdev->fence_lock);
 863         drm_gem_object_unreference_unlocked(gem);
 864         return ret;
 865 }
 866
 867 int
 868 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 869                            struct drm_file *file_priv)
 870 {
 871         return 0;
 872 }
 873
 874 int
 875 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 876                        struct drm_file *file_priv)
 877 {
 878         struct drm_nouveau_gem_info *req = data;
 879         struct drm_gem_object *gem;
 880         int ret;
 881
 882         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 883         if (!gem)
 884                 return -ENOENT;
 885
 886         ret = nouveau_gem_info(file_priv, gem, req);
 887         drm_gem_object_unreference_unlocked(gem);
 888         return ret;
 889 }
 890