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