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 "nouveau_drm.h"
  28 #include "nouveau_dma.h"
  29 #include "nouveau_fence.h"
  30 #include "nouveau_abi16.h"
  31
  32 #include "nouveau_ttm.h"
  33 #include "nouveau_gem.h"
  34
  35 void
  36 nouveau_gem_object_del(struct drm_gem_object *gem)
  37 {
  38         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  39         struct ttm_buffer_object *bo = &nvbo->bo;
  40
  41         if (gem->import_attach)
  42                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  43
  44         drm_gem_object_release(gem);
  45
  46         /* reset filp so nouveau_bo_del_ttm() can test for it */
  47         gem->filp = NULL;
  48         ttm_bo_unref(&bo);
  49 }
  50
  51 int
  52 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  53 {
  54         struct nouveau_cli *cli = nouveau_cli(file_priv);
  55         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  56         struct nouveau_vma *vma;
  57         int ret;
  58
  59         if (!cli->vm)
  60                 return 0;
  61
  62         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, NULL);
  63         if (ret)
  64                 return ret;
  65
  66         vma = nouveau_bo_vma_find(nvbo, cli->vm);
  67         if (!vma) {
  68                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  69                 if (!vma) {
  70                         ret = -ENOMEM;
  71                         goto out;
  72                 }
  73
  74                 ret = nouveau_bo_vma_add(nvbo, cli->vm, vma);
  75                 if (ret) {
  76                         kfree(vma);
  77                         goto out;
  78                 }
  79         } else {
  80                 vma->refcount++;
  81         }
  82
  83 out:
  84         ttm_bo_unreserve(&nvbo->bo);
  85         return ret;
  86 }
  87
  88 static void
  89 nouveau_gem_object_delete(void *data)
  90 {
  91         struct nouveau_vma *vma = data;
  92         nouveau_vm_unmap(vma);
  93         nouveau_vm_put(vma);
  94         kfree(vma);
  95 }
  96
  97 static void
  98 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
  99 {
 100         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 101         struct nouveau_fence *fence = NULL;
 102
 103         list_del(&vma->head);
 104
 105         if (mapped) {
 106                 spin_lock(&nvbo->bo.bdev->fence_lock);
 107                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 108                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 109         }
 110
 111         if (fence) {
 112                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 113         } else {
 114                 if (mapped)
 115                         nouveau_vm_unmap(vma);
 116                 nouveau_vm_put(vma);
 117                 kfree(vma);
 118         }
 119         nouveau_fence_unref(&fence);
 120 }
 121
 122 void
 123 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 124 {
 125         struct nouveau_cli *cli = nouveau_cli(file_priv);
 126         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 127         struct nouveau_vma *vma;
 128         int ret;
 129
 130         if (!cli->vm)
 131                 return;
 132
 133         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, NULL);
 134         if (ret)
 135                 return;
 136
 137         vma = nouveau_bo_vma_find(nvbo, cli->vm);
 138         if (vma) {
 139                 if (--vma->refcount == 0)
 140                         nouveau_gem_object_unmap(nvbo, vma);
 141         }
 142         ttm_bo_unreserve(&nvbo->bo);
 143 }
 144
 145 int
 146 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 147                 uint32_t tile_mode, uint32_t tile_flags,
 148                 struct nouveau_bo **pnvbo)
 149 {
 150         struct nouveau_drm *drm = nouveau_drm(dev);
 151         struct nouveau_bo *nvbo;
 152         u32 flags = 0;
 153         int ret;
 154
 155         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 156                 flags |= TTM_PL_FLAG_VRAM;
 157         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 158                 flags |= TTM_PL_FLAG_TT;
 159         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 160                 flags |= TTM_PL_FLAG_SYSTEM;
 161
 162         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 163                              tile_flags, NULL, pnvbo);
 164         if (ret)
 165                 return ret;
 166         nvbo = *pnvbo;
 167
 168         /* we restrict allowed domains on nv50+ to only the types
 169          * that were requested at creation time.  not possibly on
 170          * earlier chips without busting the ABI.
 171          */
 172         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 173                               NOUVEAU_GEM_DOMAIN_GART;
 174         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 175                 nvbo->valid_domains &= domain;
 176
 177         /* Initialize the embedded gem-object. We return a single gem-reference
 178          * to the caller, instead of a normal nouveau_bo ttm reference. */
 179         ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
 180         if (ret) {
 181                 nouveau_bo_ref(NULL, pnvbo);
 182                 return -ENOMEM;
 183         }
 184
 185         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 186         return 0;
 187 }
 188
 189 static int
 190 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 191                  struct drm_nouveau_gem_info *rep)
 192 {
 193         struct nouveau_cli *cli = nouveau_cli(file_priv);
 194         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 195         struct nouveau_vma *vma;
 196
 197         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 198                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 199         else
 200                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 201
 202         rep->offset = nvbo->bo.offset;
 203         if (cli->vm) {
 204                 vma = nouveau_bo_vma_find(nvbo, cli->vm);
 205                 if (!vma)
 206                         return -EINVAL;
 207
 208                 rep->offset = vma->offset;
 209         }
 210
 211         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 212         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 213         rep->tile_mode = nvbo->tile_mode;
 214         rep->tile_flags = nvbo->tile_flags;
 215         return 0;
 216 }
 217
 218 int
 219 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 220                       struct drm_file *file_priv)
 221 {
 222         struct nouveau_drm *drm = nouveau_drm(dev);
 223         struct nouveau_cli *cli = nouveau_cli(file_priv);
 224         struct nouveau_fb *pfb = nvkm_fb(&drm->device);
 225         struct drm_nouveau_gem_new *req = data;
 226         struct nouveau_bo *nvbo = NULL;
 227         int ret = 0;
 228
 229         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 230                 NV_PRINTK(error, cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 231                 return -EINVAL;
 232         }
 233
 234         ret = nouveau_gem_new(dev, req->info.size, req->align,
 235                               req->info.domain, req->info.tile_mode,
 236                               req->info.tile_flags, &nvbo);
 237         if (ret)
 238                 return ret;
 239
 240         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 241         if (ret == 0) {
 242                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 243                 if (ret)
 244                         drm_gem_handle_delete(file_priv, req->info.handle);
 245         }
 246
 247         /* drop reference from allocate - handle holds it now */
 248         drm_gem_object_unreference_unlocked(&nvbo->gem);
 249         return ret;
 250 }
 251
 252 static int
 253 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 254                        uint32_t write_domains, uint32_t valid_domains)
 255 {
 256         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 257         struct ttm_buffer_object *bo = &nvbo->bo;
 258         uint32_t domains = valid_domains & nvbo->valid_domains &
 259                 (write_domains ? write_domains : read_domains);
 260         uint32_t pref_flags = 0, valid_flags = 0;
 261
 262         if (!domains)
 263                 return -EINVAL;
 264
 265         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 266                 valid_flags |= TTM_PL_FLAG_VRAM;
 267
 268         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 269                 valid_flags |= TTM_PL_FLAG_TT;
 270
 271         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 272             bo->mem.mem_type == TTM_PL_VRAM)
 273                 pref_flags |= TTM_PL_FLAG_VRAM;
 274
 275         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 276                  bo->mem.mem_type == TTM_PL_TT)
 277                 pref_flags |= TTM_PL_FLAG_TT;
 278
 279         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 280                 pref_flags |= TTM_PL_FLAG_VRAM;
 281
 282         else
 283                 pref_flags |= TTM_PL_FLAG_TT;
 284
 285         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 286
 287         return 0;
 288 }
 289
 290 struct validate_op {
 291         struct list_head vram_list;
 292         struct list_head gart_list;
 293         struct list_head both_list;
 294         struct ww_acquire_ctx ticket;
 295 };
 296
 297 static void
 298 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 299                    struct ww_acquire_ctx *ticket)
 300 {
 301         struct list_head *entry, *tmp;
 302         struct nouveau_bo *nvbo;
 303
 304         list_for_each_safe(entry, tmp, list) {
 305                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 306
 307                 if (likely(fence))
 308                         nouveau_bo_fence(nvbo, fence);
 309
 310                 if (unlikely(nvbo->validate_mapped)) {
 311                         ttm_bo_kunmap(&nvbo->kmap);
 312                         nvbo->validate_mapped = false;
 313                 }
 314
 315                 list_del(&nvbo->entry);
 316                 nvbo->reserved_by = NULL;
 317                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 318                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 319         }
 320 }
 321
 322 static void
 323 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 324 {
 325         validate_fini_list(&op->vram_list, fence, &op->ticket);
 326         validate_fini_list(&op->gart_list, fence, &op->ticket);
 327         validate_fini_list(&op->both_list, fence, &op->ticket);
 328 }
 329
 330 static void
 331 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 332 {
 333         validate_fini_no_ticket(op, fence);
 334         ww_acquire_fini(&op->ticket);
 335 }
 336
 337 static int
 338 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 339               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 340               int nr_buffers, struct validate_op *op)
 341 {
 342         struct nouveau_cli *cli = nouveau_cli(file_priv);
 343         struct drm_device *dev = chan->drm->dev;
 344         int trycnt = 0;
 345         int ret, i;
 346         struct nouveau_bo *res_bo = NULL;
 347
 348         ww_acquire_init(&op->ticket, &reservation_ww_class);
 349 retry:
 350         if (++trycnt > 100000) {
 351                 NV_PRINTK(error, cli, "%s failed and gave up.\n", __func__);
 352                 return -EINVAL;
 353         }
 354
 355         for (i = 0; i < nr_buffers; i++) {
 356                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 357                 struct drm_gem_object *gem;
 358                 struct nouveau_bo *nvbo;
 359
 360                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 361                 if (!gem) {
 362                         NV_PRINTK(error, cli, "Unknown handle 0x%08x\n", b->handle);
 363                         ww_acquire_done(&op->ticket);
 364                         validate_fini(op, NULL);
 365                         return -ENOENT;
 366                 }
 367                 nvbo = nouveau_gem_object(gem);
 368                 if (nvbo == res_bo) {
 369                         res_bo = NULL;
 370                         drm_gem_object_unreference_unlocked(gem);
 371                         continue;
 372                 }
 373
 374                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 375                         NV_PRINTK(error, cli, "multiple instances of buffer %d on "
 376                                       "validation list\n", b->handle);
 377                         drm_gem_object_unreference_unlocked(gem);
 378                         ww_acquire_done(&op->ticket);
 379                         validate_fini(op, NULL);
 380                         return -EINVAL;
 381                 }
 382
 383                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 384                 if (ret) {
 385                         validate_fini_no_ticket(op, NULL);
 386                         if (unlikely(ret == -EDEADLK)) {
 387                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 388                                                               &op->ticket);
 389                                 if (!ret)
 390                                         res_bo = nvbo;
 391                         }
 392                         if (unlikely(ret)) {
 393                                 ww_acquire_done(&op->ticket);
 394                                 ww_acquire_fini(&op->ticket);
 395                                 drm_gem_object_unreference_unlocked(gem);
 396                                 if (ret != -ERESTARTSYS)
 397                                         NV_PRINTK(error, cli, "fail reserve\n");
 398                                 return ret;
 399                         }
 400                 }
 401
 402                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 403                 nvbo->reserved_by = file_priv;
 404                 nvbo->pbbo_index = i;
 405                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 406                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 407                         list_add_tail(&nvbo->entry, &op->both_list);
 408                 else
 409                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 410                         list_add_tail(&nvbo->entry, &op->vram_list);
 411                 else
 412                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 413                         list_add_tail(&nvbo->entry, &op->gart_list);
 414                 else {
 415                         NV_PRINTK(error, cli, "invalid valid domains: 0x%08x\n",
 416                                  b->valid_domains);
 417                         list_add_tail(&nvbo->entry, &op->both_list);
 418                         ww_acquire_done(&op->ticket);
 419                         validate_fini(op, NULL);
 420                         return -EINVAL;
 421                 }
 422                 if (nvbo == res_bo)
 423                         goto retry;
 424         }
 425
 426         ww_acquire_done(&op->ticket);
 427         return 0;
 428 }
 429
 430 static int
 431 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 432 {
 433         struct nouveau_fence *fence = NULL;
 434         int ret = 0;
 435
 436         spin_lock(&nvbo->bo.bdev->fence_lock);
 437         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 438         spin_unlock(&nvbo->bo.bdev->fence_lock);
 439
 440         if (fence) {
 441                 ret = nouveau_fence_sync(fence, chan);
 442                 nouveau_fence_unref(&fence);
 443         }
 444
 445         return ret;
 446 }
 447
 448 static int
 449 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 450               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 451               uint64_t user_pbbo_ptr)
 452 {
 453         struct nouveau_drm *drm = chan->drm;
 454         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 455                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 456         struct nouveau_bo *nvbo;
 457         int ret, relocs = 0;
 458
 459         list_for_each_entry(nvbo, list, entry) {
 460                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 461
 462                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 463                                              b->write_domains,
 464                                              b->valid_domains);
 465                 if (unlikely(ret)) {
 466                         NV_PRINTK(error, cli, "fail set_domain\n");
 467                         return ret;
 468                 }
 469
 470                 ret = nouveau_bo_validate(nvbo, true, false);
 471                 if (unlikely(ret)) {
 472                         if (ret != -ERESTARTSYS)
 473                                 NV_PRINTK(error, cli, "fail ttm_validate\n");
 474                         return ret;
 475                 }
 476
 477                 ret = validate_sync(chan, nvbo);
 478                 if (unlikely(ret)) {
 479                         NV_PRINTK(error, cli, "fail post-validate sync\n");
 480                         return ret;
 481                 }
 482
 483                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 484                         if (nvbo->bo.offset == b->presumed.offset &&
 485                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 486                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 487                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 488                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 489                                 continue;
 490
 491                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 492                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 493                         else
 494                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 495                         b->presumed.offset = nvbo->bo.offset;
 496                         b->presumed.valid = 0;
 497                         relocs++;
 498
 499                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 500                                              &b->presumed, sizeof(b->presumed)))
 501                                 return -EFAULT;
 502                 }
 503         }
 504
 505         return relocs;
 506 }
 507
 508 static int
 509 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 510                              struct drm_file *file_priv,
 511                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 512                              uint64_t user_buffers, int nr_buffers,
 513                              struct validate_op *op, int *apply_relocs)
 514 {
 515         struct nouveau_cli *cli = nouveau_cli(file_priv);
 516         int ret, relocs = 0;
 517
 518         INIT_LIST_HEAD(&op->vram_list);
 519         INIT_LIST_HEAD(&op->gart_list);
 520         INIT_LIST_HEAD(&op->both_list);
 521
 522         if (nr_buffers == 0)
 523                 return 0;
 524
 525         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 526         if (unlikely(ret)) {
 527                 if (ret != -ERESTARTSYS)
 528                         NV_PRINTK(error, cli, "validate_init\n");
 529                 return ret;
 530         }
 531
 532         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 533         if (unlikely(ret < 0)) {
 534                 if (ret != -ERESTARTSYS)
 535                         NV_PRINTK(error, cli, "validate vram_list\n");
 536                 validate_fini(op, NULL);
 537                 return ret;
 538         }
 539         relocs += ret;
 540
 541         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 542         if (unlikely(ret < 0)) {
 543                 if (ret != -ERESTARTSYS)
 544                         NV_PRINTK(error, cli, "validate gart_list\n");
 545                 validate_fini(op, NULL);
 546                 return ret;
 547         }
 548         relocs += ret;
 549
 550         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 551         if (unlikely(ret < 0)) {
 552                 if (ret != -ERESTARTSYS)
 553                         NV_PRINTK(error, cli, "validate both_list\n");
 554                 validate_fini(op, NULL);
 555                 return ret;
 556         }
 557         relocs += ret;
 558
 559         *apply_relocs = relocs;
 560         return 0;
 561 }
 562
 563 static inline void
 564 u_free(void *addr)
 565 {
 566         if (!is_vmalloc_addr(addr))
 567                 kfree(addr);
 568         else
 569                 vfree(addr);
 570 }
 571
 572 static inline void *
 573 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 574 {
 575         void *mem;
 576         void __user *userptr = (void __force __user *)(uintptr_t)user;
 577
 578         size *= nmemb;
 579
 580         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 581         if (!mem)
 582                 mem = vmalloc(size);
 583         if (!mem)
 584                 return ERR_PTR(-ENOMEM);
 585
 586         if (copy_from_user(mem, userptr, size)) {
 587                 u_free(mem);
 588                 return ERR_PTR(-EFAULT);
 589         }
 590
 591         return mem;
 592 }
 593
 594 static int
 595 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 596                                 struct drm_nouveau_gem_pushbuf *req,
 597                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 598 {
 599         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 600         int ret = 0;
 601         unsigned i;
 602
 603         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 604         if (IS_ERR(reloc))
 605                 return PTR_ERR(reloc);
 606
 607         for (i = 0; i < req->nr_relocs; i++) {
 608                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 609                 struct drm_nouveau_gem_pushbuf_bo *b;
 610                 struct nouveau_bo *nvbo;
 611                 uint32_t data;
 612
 613                 if (unlikely(r->bo_index > req->nr_buffers)) {
 614                         NV_PRINTK(error, cli, "reloc bo index invalid\n");
 615                         ret = -EINVAL;
 616                         break;
 617                 }
 618
 619                 b = &bo[r->bo_index];
 620                 if (b->presumed.valid)
 621                         continue;
 622
 623                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 624                         NV_PRINTK(error, cli, "reloc container bo index invalid\n");
 625                         ret = -EINVAL;
 626                         break;
 627                 }
 628                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 629
 630                 if (unlikely(r->reloc_bo_offset + 4 >
 631                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 632                         NV_PRINTK(error, cli, "reloc outside of bo\n");
 633                         ret = -EINVAL;
 634                         break;
 635                 }
 636
 637                 if (!nvbo->kmap.virtual) {
 638                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 639                                           &nvbo->kmap);
 640                         if (ret) {
 641                                 NV_PRINTK(error, cli, "failed kmap for reloc\n");
 642                                 break;
 643                         }
 644                         nvbo->validate_mapped = true;
 645                 }
 646
 647                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 648                         data = b->presumed.offset + r->data;
 649                 else
 650                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 651                         data = (b->presumed.offset + r->data) >> 32;
 652                 else
 653                         data = r->data;
 654
 655                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 656                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 657                                 data |= r->tor;
 658                         else
 659                                 data |= r->vor;
 660                 }
 661
 662                 spin_lock(&nvbo->bo.bdev->fence_lock);
 663                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 664                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 665                 if (ret) {
 666                         NV_PRINTK(error, cli, "reloc wait_idle failed: %d\n", ret);
 667                         break;
 668                 }
 669
 670                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 671         }
 672
 673         u_free(reloc);
 674         return ret;
 675 }
 676
 677 int
 678 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 679                           struct drm_file *file_priv)
 680 {
 681         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 682         struct nouveau_cli *cli = nouveau_cli(file_priv);
 683         struct nouveau_abi16_chan *temp;
 684         struct nouveau_drm *drm = nouveau_drm(dev);
 685         struct drm_nouveau_gem_pushbuf *req = data;
 686         struct drm_nouveau_gem_pushbuf_push *push;
 687         struct drm_nouveau_gem_pushbuf_bo *bo;
 688         struct nouveau_channel *chan = NULL;
 689         struct validate_op op;
 690         struct nouveau_fence *fence = NULL;
 691         int i, j, ret = 0, do_reloc = 0;
 692
 693         if (unlikely(!abi16))
 694                 return -ENOMEM;
 695
 696         list_for_each_entry(temp, &abi16->channels, head) {
 697                 if (temp->chan->object->handle == (NVDRM_CHAN | req->channel)) {
 698                         chan = temp->chan;
 699                         break;
 700                 }
 701         }
 702
 703         if (!chan)
 704                 return nouveau_abi16_put(abi16, -ENOENT);
 705
 706         req->vram_available = drm->gem.vram_available;
 707         req->gart_available = drm->gem.gart_available;
 708         if (unlikely(req->nr_push == 0))
 709                 goto out_next;
 710
 711         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 712                 NV_PRINTK(error, cli, "pushbuf push count exceeds limit: %d max %d\n",
 713                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 714                 return nouveau_abi16_put(abi16, -EINVAL);
 715         }
 716
 717         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 718                 NV_PRINTK(error, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 719                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 720                 return nouveau_abi16_put(abi16, -EINVAL);
 721         }
 722
 723         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 724                 NV_PRINTK(error, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 725                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 726                 return nouveau_abi16_put(abi16, -EINVAL);
 727         }
 728
 729         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 730         if (IS_ERR(push))
 731                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 732
 733         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 734         if (IS_ERR(bo)) {
 735                 u_free(push);
 736                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 737         }
 738
 739         /* Ensure all push buffers are on validate list */
 740         for (i = 0; i < req->nr_push; i++) {
 741                 if (push[i].bo_index >= req->nr_buffers) {
 742                         NV_PRINTK(error, cli, "push %d buffer not in list\n", i);
 743                         ret = -EINVAL;
 744                         goto out_prevalid;
 745                 }
 746         }
 747
 748         /* Validate buffer list */
 749         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 750                                            req->nr_buffers, &op, &do_reloc);
 751         if (ret) {
 752                 if (ret != -ERESTARTSYS)
 753                         NV_PRINTK(error, cli, "validate: %d\n", ret);
 754                 goto out_prevalid;
 755         }
 756
 757         /* Apply any relocations that are required */
 758         if (do_reloc) {
 759                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 760                 if (ret) {
 761                         NV_PRINTK(error, cli, "reloc apply: %d\n", ret);
 762                         goto out;
 763                 }
 764         }
 765
 766         if (chan->dma.ib_max) {
 767                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 768                 if (ret) {
 769                         NV_PRINTK(error, cli, "nv50cal_space: %d\n", ret);
 770                         goto out;
 771                 }
 772
 773                 for (i = 0; i < req->nr_push; i++) {
 774                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 775                                 bo[push[i].bo_index].user_priv;
 776
 777                         nv50_dma_push(chan, nvbo, push[i].offset,
 778                                       push[i].length);
 779                 }
 780         } else
 781         if (drm->device.info.chipset >= 0x25) {
 782                 ret = RING_SPACE(chan, req->nr_push * 2);
 783                 if (ret) {
 784                         NV_PRINTK(error, cli, "cal_space: %d\n", ret);
 785                         goto out;
 786                 }
 787
 788                 for (i = 0; i < req->nr_push; i++) {
 789                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 790                                 bo[push[i].bo_index].user_priv;
 791
 792                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 793                         OUT_RING(chan, 0);
 794                 }
 795         } else {
 796                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 797                 if (ret) {
 798                         NV_PRINTK(error, cli, "jmp_space: %d\n", ret);
 799                         goto out;
 800                 }
 801
 802                 for (i = 0; i < req->nr_push; i++) {
 803                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 804                                 bo[push[i].bo_index].user_priv;
 805                         uint32_t cmd;
 806
 807                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 808                         cmd |= 0x20000000;
 809                         if (unlikely(cmd != req->suffix0)) {
 810                                 if (!nvbo->kmap.virtual) {
 811                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 812                                                           nvbo->bo.mem.
 813                                                           num_pages,
 814                                                           &nvbo->kmap);
 815                                         if (ret) {
 816                                                 WIND_RING(chan);
 817                                                 goto out;
 818                                         }
 819                                         nvbo->validate_mapped = true;
 820                                 }
 821
 822                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 823                                                 push[i].length - 8) / 4, cmd);
 824                         }
 825
 826                         OUT_RING(chan, 0x20000000 |
 827                                       (nvbo->bo.offset + push[i].offset));
 828                         OUT_RING(chan, 0);
 829                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 830                                 OUT_RING(chan, 0);
 831                 }
 832         }
 833
 834         ret = nouveau_fence_new(chan, false, &fence);
 835         if (ret) {
 836                 NV_PRINTK(error, cli, "error fencing pushbuf: %d\n", ret);
 837                 WIND_RING(chan);
 838                 goto out;
 839         }
 840
 841 out:
 842         validate_fini(&op, fence);
 843         nouveau_fence_unref(&fence);
 844
 845 out_prevalid:
 846         u_free(bo);
 847         u_free(push);
 848
 849 out_next:
 850         if (chan->dma.ib_max) {
 851                 req->suffix0 = 0x00000000;
 852                 req->suffix1 = 0x00000000;
 853         } else
 854         if (drm->device.info.chipset >= 0x25) {
 855                 req->suffix0 = 0x00020000;
 856                 req->suffix1 = 0x00000000;
 857         } else {
 858                 req->suffix0 = 0x20000000 |
 859                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 860                 req->suffix1 = 0x00000000;
 861         }
 862
 863         return nouveau_abi16_put(abi16, ret);
 864 }
 865
 866 static inline uint32_t
 867 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 868 {
 869         uint32_t flags = 0;
 870
 871         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 872                 flags |= TTM_PL_FLAG_VRAM;
 873         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 874                 flags |= TTM_PL_FLAG_TT;
 875
 876         return flags;
 877 }
 878
 879 int
 880 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 881                            struct drm_file *file_priv)
 882 {
 883         struct drm_nouveau_gem_cpu_prep *req = data;
 884         struct drm_gem_object *gem;
 885         struct nouveau_bo *nvbo;
 886         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 887         int ret = -EINVAL;
 888
 889         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 890         if (!gem)
 891                 return -ENOENT;
 892         nvbo = nouveau_gem_object(gem);
 893
 894         spin_lock(&nvbo->bo.bdev->fence_lock);
 895         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 896         spin_unlock(&nvbo->bo.bdev->fence_lock);
 897         drm_gem_object_unreference_unlocked(gem);
 898         return ret;
 899 }
 900
 901 int
 902 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 903                            struct drm_file *file_priv)
 904 {
 905         return 0;
 906 }
 907
 908 int
 909 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 910                        struct drm_file *file_priv)
 911 {
 912         struct drm_nouveau_gem_info *req = data;
 913         struct drm_gem_object *gem;
 914         int ret;
 915
 916         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 917         if (!gem)
 918                 return -ENOENT;
 919
 920         ret = nouveau_gem_info(file_priv, gem, req);
 921         drm_gem_object_unreference_unlocked(gem);
 922         return ret;
 923 }
 924