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 void
  38 nouveau_gem_object_del(struct drm_gem_object *gem)
  39 {
  40         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  41         struct ttm_buffer_object *bo = &nvbo->bo;
  42
  43         if (gem->import_attach)
  44                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  45
  46         drm_gem_object_release(gem);
  47
  48         /* reset filp so nouveau_bo_del_ttm() can test for it */
  49         gem->filp = NULL;
  50         ttm_bo_unref(&bo);
  51 }
  52
  53 int
  54 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  55 {
  56         struct nouveau_cli *cli = nouveau_cli(file_priv);
  57         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  58         struct nouveau_vma *vma;
  59         int ret;
  60
  61         if (!cli->base.vm)
  62                 return 0;
  63
  64         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  65         if (ret)
  66                 return ret;
  67
  68         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  69         if (!vma) {
  70                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  71                 if (!vma) {
  72                         ret = -ENOMEM;
  73                         goto out;
  74                 }
  75
  76                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  77                 if (ret) {
  78                         kfree(vma);
  79                         goto out;
  80                 }
  81         } else {
  82                 vma->refcount++;
  83         }
  84
  85 out:
  86         ttm_bo_unreserve(&nvbo->bo);
  87         return ret;
  88 }
  89
  90 static void
  91 nouveau_gem_object_delete(void *data)
  92 {
  93         struct nouveau_vma *vma = data;
  94         nouveau_vm_unmap(vma);
  95         nouveau_vm_put(vma);
  96         kfree(vma);
  97 }
  98
  99 static void
 100 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 101 {
 102         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 103         struct nouveau_fence *fence = NULL;
 104
 105         list_del(&vma->head);
 106
 107         if (mapped) {
 108                 spin_lock(&nvbo->bo.bdev->fence_lock);
 109                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 110                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 111         }
 112
 113         if (fence) {
 114                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 115         } else {
 116                 if (mapped)
 117                         nouveau_vm_unmap(vma);
 118                 nouveau_vm_put(vma);
 119                 kfree(vma);
 120         }
 121         nouveau_fence_unref(&fence);
 122 }
 123
 124 void
 125 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 126 {
 127         struct nouveau_cli *cli = nouveau_cli(file_priv);
 128         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 129         struct nouveau_vma *vma;
 130         int ret;
 131
 132         if (!cli->base.vm)
 133                 return;
 134
 135         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 136         if (ret)
 137                 return;
 138
 139         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 140         if (vma) {
 141                 if (--vma->refcount == 0)
 142                         nouveau_gem_object_unmap(nvbo, vma);
 143         }
 144         ttm_bo_unreserve(&nvbo->bo);
 145 }
 146
 147 int
 148 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 149                 uint32_t tile_mode, uint32_t tile_flags,
 150                 struct nouveau_bo **pnvbo)
 151 {
 152         struct nouveau_drm *drm = nouveau_drm(dev);
 153         struct nouveau_bo *nvbo;
 154         u32 flags = 0;
 155         int ret;
 156
 157         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 158                 flags |= TTM_PL_FLAG_VRAM;
 159         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 160                 flags |= TTM_PL_FLAG_TT;
 161         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 162                 flags |= TTM_PL_FLAG_SYSTEM;
 163
 164         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 165                              tile_flags, NULL, pnvbo);
 166         if (ret)
 167                 return ret;
 168         nvbo = *pnvbo;
 169
 170         /* we restrict allowed domains on nv50+ to only the types
 171          * that were requested at creation time.  not possibly on
 172          * earlier chips without busting the ABI.
 173          */
 174         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 175                               NOUVEAU_GEM_DOMAIN_GART;
 176         if (nv_device(drm->device)->card_type >= NV_50)
 177                 nvbo->valid_domains &= domain;
 178
 179         /* Initialize the embedded gem-object. We return a single gem-reference
 180          * to the caller, instead of a normal nouveau_bo ttm reference. */
 181         ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
 182         if (ret) {
 183                 nouveau_bo_ref(NULL, pnvbo);
 184                 return -ENOMEM;
 185         }
 186
 187         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 188         return 0;
 189 }
 190
 191 static int
 192 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 193                  struct drm_nouveau_gem_info *rep)
 194 {
 195         struct nouveau_cli *cli = nouveau_cli(file_priv);
 196         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 197         struct nouveau_vma *vma;
 198
 199         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 200                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 201         else
 202                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 203
 204         rep->offset = nvbo->bo.offset;
 205         if (cli->base.vm) {
 206                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 207                 if (!vma)
 208                         return -EINVAL;
 209
 210                 rep->offset = vma->offset;
 211         }
 212
 213         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 214         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 215         rep->tile_mode = nvbo->tile_mode;
 216         rep->tile_flags = nvbo->tile_flags;
 217         return 0;
 218 }
 219
 220 int
 221 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 222                       struct drm_file *file_priv)
 223 {
 224         struct nouveau_drm *drm = nouveau_drm(dev);
 225         struct nouveau_cli *cli = nouveau_cli(file_priv);
 226         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 227         struct drm_nouveau_gem_new *req = data;
 228         struct nouveau_bo *nvbo = NULL;
 229         int ret = 0;
 230
 231         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 232                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 233                 return -EINVAL;
 234         }
 235
 236         ret = nouveau_gem_new(dev, req->info.size, req->align,
 237                               req->info.domain, req->info.tile_mode,
 238                               req->info.tile_flags, &nvbo);
 239         if (ret)
 240                 return ret;
 241
 242         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 243         if (ret == 0) {
 244                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 245                 if (ret)
 246                         drm_gem_handle_delete(file_priv, req->info.handle);
 247         }
 248
 249         /* drop reference from allocate - handle holds it now */
 250         drm_gem_object_unreference_unlocked(&nvbo->gem);
 251         return ret;
 252 }
 253
 254 static int
 255 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 256                        uint32_t write_domains, uint32_t valid_domains)
 257 {
 258         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 259         struct ttm_buffer_object *bo = &nvbo->bo;
 260         uint32_t domains = valid_domains & nvbo->valid_domains &
 261                 (write_domains ? write_domains : read_domains);
 262         uint32_t pref_flags = 0, valid_flags = 0;
 263
 264         if (!domains)
 265                 return -EINVAL;
 266
 267         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 268                 valid_flags |= TTM_PL_FLAG_VRAM;
 269
 270         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 271                 valid_flags |= TTM_PL_FLAG_TT;
 272
 273         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 274             bo->mem.mem_type == TTM_PL_VRAM)
 275                 pref_flags |= TTM_PL_FLAG_VRAM;
 276
 277         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 278                  bo->mem.mem_type == TTM_PL_TT)
 279                 pref_flags |= TTM_PL_FLAG_TT;
 280
 281         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 282                 pref_flags |= TTM_PL_FLAG_VRAM;
 283
 284         else
 285                 pref_flags |= TTM_PL_FLAG_TT;
 286
 287         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 288
 289         return 0;
 290 }
 291
 292 struct validate_op {
 293         struct list_head vram_list;
 294         struct list_head gart_list;
 295         struct list_head both_list;
 296         struct ww_acquire_ctx ticket;
 297 };
 298
 299 static void
 300 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 301                    struct ww_acquire_ctx *ticket)
 302 {
 303         struct list_head *entry, *tmp;
 304         struct nouveau_bo *nvbo;
 305
 306         list_for_each_safe(entry, tmp, list) {
 307                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 308
 309                 if (likely(fence))
 310                         nouveau_bo_fence(nvbo, fence);
 311
 312                 if (unlikely(nvbo->validate_mapped)) {
 313                         ttm_bo_kunmap(&nvbo->kmap);
 314                         nvbo->validate_mapped = false;
 315                 }
 316
 317                 list_del(&nvbo->entry);
 318                 nvbo->reserved_by = NULL;
 319                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 320                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 321         }
 322 }
 323
 324 static void
 325 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 326 {
 327         validate_fini_list(&op->vram_list, fence, &op->ticket);
 328         validate_fini_list(&op->gart_list, fence, &op->ticket);
 329         validate_fini_list(&op->both_list, fence, &op->ticket);
 330 }
 331
 332 static void
 333 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 334 {
 335         validate_fini_no_ticket(op, fence);
 336         ww_acquire_fini(&op->ticket);
 337 }
 338
 339 static int
 340 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 341               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 342               int nr_buffers, struct validate_op *op)
 343 {
 344         struct nouveau_cli *cli = nouveau_cli(file_priv);
 345         struct drm_device *dev = chan->drm->dev;
 346         int trycnt = 0;
 347         int ret, i;
 348         struct nouveau_bo *res_bo = NULL;
 349
 350         ww_acquire_init(&op->ticket, &reservation_ww_class);
 351 retry:
 352         if (++trycnt > 100000) {
 353                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 354                 return -EINVAL;
 355         }
 356
 357         for (i = 0; i < nr_buffers; i++) {
 358                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 359                 struct drm_gem_object *gem;
 360                 struct nouveau_bo *nvbo;
 361
 362                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 363                 if (!gem) {
 364                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 365                         ww_acquire_done(&op->ticket);
 366                         validate_fini(op, NULL);
 367                         return -ENOENT;
 368                 }
 369                 nvbo = nouveau_gem_object(gem);
 370                 if (nvbo == res_bo) {
 371                         res_bo = NULL;
 372                         drm_gem_object_unreference_unlocked(gem);
 373                         continue;
 374                 }
 375
 376                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 377                         NV_ERROR(cli, "multiple instances of buffer %d on "
 378                                       "validation list\n", b->handle);
 379                         drm_gem_object_unreference_unlocked(gem);
 380                         ww_acquire_done(&op->ticket);
 381                         validate_fini(op, NULL);
 382                         return -EINVAL;
 383                 }
 384
 385                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 386                 if (ret) {
 387                         validate_fini_no_ticket(op, NULL);
 388                         if (unlikely(ret == -EDEADLK)) {
 389                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 390                                                               &op->ticket);
 391                                 if (!ret)
 392                                         res_bo = nvbo;
 393                         }
 394                         if (unlikely(ret)) {
 395                                 ww_acquire_done(&op->ticket);
 396                                 ww_acquire_fini(&op->ticket);
 397                                 drm_gem_object_unreference_unlocked(gem);
 398                                 if (ret != -ERESTARTSYS)
 399                                         NV_ERROR(cli, "fail reserve\n");
 400                                 return ret;
 401                         }
 402                 }
 403
 404                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 405                 nvbo->reserved_by = file_priv;
 406                 nvbo->pbbo_index = i;
 407                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 408                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 409                         list_add_tail(&nvbo->entry, &op->both_list);
 410                 else
 411                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 412                         list_add_tail(&nvbo->entry, &op->vram_list);
 413                 else
 414                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 415                         list_add_tail(&nvbo->entry, &op->gart_list);
 416                 else {
 417                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 418                                  b->valid_domains);
 419                         list_add_tail(&nvbo->entry, &op->both_list);
 420                         ww_acquire_done(&op->ticket);
 421                         validate_fini(op, NULL);
 422                         return -EINVAL;
 423                 }
 424                 if (nvbo == res_bo)
 425                         goto retry;
 426         }
 427
 428         ww_acquire_done(&op->ticket);
 429         return 0;
 430 }
 431
 432 static int
 433 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 434 {
 435         struct nouveau_fence *fence = NULL;
 436         int ret = 0;
 437
 438         spin_lock(&nvbo->bo.bdev->fence_lock);
 439         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 440         spin_unlock(&nvbo->bo.bdev->fence_lock);
 441
 442         if (fence) {
 443                 ret = nouveau_fence_sync(fence, chan);
 444                 nouveau_fence_unref(&fence);
 445         }
 446
 447         return ret;
 448 }
 449
 450 static int
 451 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 452               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 453               uint64_t user_pbbo_ptr)
 454 {
 455         struct nouveau_drm *drm = chan->drm;
 456         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 457                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 458         struct nouveau_bo *nvbo;
 459         int ret, relocs = 0;
 460
 461         list_for_each_entry(nvbo, list, entry) {
 462                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 463
 464                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 465                                              b->write_domains,
 466                                              b->valid_domains);
 467                 if (unlikely(ret)) {
 468                         NV_ERROR(cli, "fail set_domain\n");
 469                         return ret;
 470                 }
 471
 472                 ret = nouveau_bo_validate(nvbo, true, false);
 473                 if (unlikely(ret)) {
 474                         if (ret != -ERESTARTSYS)
 475                                 NV_ERROR(cli, "fail ttm_validate\n");
 476                         return ret;
 477                 }
 478
 479                 ret = validate_sync(chan, nvbo);
 480                 if (unlikely(ret)) {
 481                         NV_ERROR(cli, "fail post-validate sync\n");
 482                         return ret;
 483                 }
 484
 485                 if (nv_device(drm->device)->card_type < NV_50) {
 486                         if (nvbo->bo.offset == b->presumed.offset &&
 487                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 488                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 489                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 490                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 491                                 continue;
 492
 493                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 494                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 495                         else
 496                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 497                         b->presumed.offset = nvbo->bo.offset;
 498                         b->presumed.valid = 0;
 499                         relocs++;
 500
 501                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 502                                              &b->presumed, sizeof(b->presumed)))
 503                                 return -EFAULT;
 504                 }
 505         }
 506
 507         return relocs;
 508 }
 509
 510 static int
 511 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 512                              struct drm_file *file_priv,
 513                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 514                              uint64_t user_buffers, int nr_buffers,
 515                              struct validate_op *op, int *apply_relocs)
 516 {
 517         struct nouveau_cli *cli = nouveau_cli(file_priv);
 518         int ret, relocs = 0;
 519
 520         INIT_LIST_HEAD(&op->vram_list);
 521         INIT_LIST_HEAD(&op->gart_list);
 522         INIT_LIST_HEAD(&op->both_list);
 523
 524         if (nr_buffers == 0)
 525                 return 0;
 526
 527         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 528         if (unlikely(ret)) {
 529                 if (ret != -ERESTARTSYS)
 530                         NV_ERROR(cli, "validate_init\n");
 531                 return ret;
 532         }
 533
 534         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 535         if (unlikely(ret < 0)) {
 536                 if (ret != -ERESTARTSYS)
 537                         NV_ERROR(cli, "validate vram_list\n");
 538                 validate_fini(op, NULL);
 539                 return ret;
 540         }
 541         relocs += ret;
 542
 543         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 544         if (unlikely(ret < 0)) {
 545                 if (ret != -ERESTARTSYS)
 546                         NV_ERROR(cli, "validate gart_list\n");
 547                 validate_fini(op, NULL);
 548                 return ret;
 549         }
 550         relocs += ret;
 551
 552         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 553         if (unlikely(ret < 0)) {
 554                 if (ret != -ERESTARTSYS)
 555                         NV_ERROR(cli, "validate both_list\n");
 556                 validate_fini(op, NULL);
 557                 return ret;
 558         }
 559         relocs += ret;
 560
 561         *apply_relocs = relocs;
 562         return 0;
 563 }
 564
 565 static inline void
 566 u_free(void *addr)
 567 {
 568         if (!is_vmalloc_addr(addr))
 569                 kfree(addr);
 570         else
 571                 vfree(addr);
 572 }
 573
 574 static inline void *
 575 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 576 {
 577         void *mem;
 578         void __user *userptr = (void __force __user *)(uintptr_t)user;
 579
 580         size *= nmemb;
 581
 582         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 583         if (!mem)
 584                 mem = vmalloc(size);
 585         if (!mem)
 586                 return ERR_PTR(-ENOMEM);
 587
 588         if (copy_from_user(mem, userptr, size)) {
 589                 u_free(mem);
 590                 return ERR_PTR(-EFAULT);
 591         }
 592
 593         return mem;
 594 }
 595
 596 static int
 597 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 598                                 struct drm_nouveau_gem_pushbuf *req,
 599                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 600 {
 601         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 602         int ret = 0;
 603         unsigned i;
 604
 605         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 606         if (IS_ERR(reloc))
 607                 return PTR_ERR(reloc);
 608
 609         for (i = 0; i < req->nr_relocs; i++) {
 610                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 611                 struct drm_nouveau_gem_pushbuf_bo *b;
 612                 struct nouveau_bo *nvbo;
 613                 uint32_t data;
 614
 615                 if (unlikely(r->bo_index > req->nr_buffers)) {
 616                         NV_ERROR(cli, "reloc bo index invalid\n");
 617                         ret = -EINVAL;
 618                         break;
 619                 }
 620
 621                 b = &bo[r->bo_index];
 622                 if (b->presumed.valid)
 623                         continue;
 624
 625                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 626                         NV_ERROR(cli, "reloc container bo index invalid\n");
 627                         ret = -EINVAL;
 628                         break;
 629                 }
 630                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 631
 632                 if (unlikely(r->reloc_bo_offset + 4 >
 633                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 634                         NV_ERROR(cli, "reloc outside of bo\n");
 635                         ret = -EINVAL;
 636                         break;
 637                 }
 638
 639                 if (!nvbo->kmap.virtual) {
 640                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 641                                           &nvbo->kmap);
 642                         if (ret) {
 643                                 NV_ERROR(cli, "failed kmap for reloc\n");
 644                                 break;
 645                         }
 646                         nvbo->validate_mapped = true;
 647                 }
 648
 649                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 650                         data = b->presumed.offset + r->data;
 651                 else
 652                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 653                         data = (b->presumed.offset + r->data) >> 32;
 654                 else
 655                         data = r->data;
 656
 657                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 658                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 659                                 data |= r->tor;
 660                         else
 661                                 data |= r->vor;
 662                 }
 663
 664                 spin_lock(&nvbo->bo.bdev->fence_lock);
 665                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 666                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 667                 if (ret) {
 668                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 669                         break;
 670                 }
 671
 672                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 673         }
 674
 675         u_free(reloc);
 676         return ret;
 677 }
 678
 679 int
 680 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 681                           struct drm_file *file_priv)
 682 {
 683         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 684         struct nouveau_cli *cli = nouveau_cli(file_priv);
 685         struct nouveau_abi16_chan *temp;
 686         struct nouveau_drm *drm = nouveau_drm(dev);
 687         struct drm_nouveau_gem_pushbuf *req = data;
 688         struct drm_nouveau_gem_pushbuf_push *push;
 689         struct drm_nouveau_gem_pushbuf_bo *bo;
 690         struct nouveau_channel *chan = NULL;
 691         struct validate_op op;
 692         struct nouveau_fence *fence = NULL;
 693         int i, j, ret = 0, do_reloc = 0;
 694
 695         if (unlikely(!abi16))
 696                 return -ENOMEM;
 697
 698         list_for_each_entry(temp, &abi16->channels, head) {
 699                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 700                         chan = temp->chan;
 701                         break;
 702                 }
 703         }
 704
 705         if (!chan)
 706                 return nouveau_abi16_put(abi16, -ENOENT);
 707
 708         req->vram_available = drm->gem.vram_available;
 709         req->gart_available = drm->gem.gart_available;
 710         if (unlikely(req->nr_push == 0))
 711                 goto out_next;
 712
 713         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 714                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 715                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 716                 return nouveau_abi16_put(abi16, -EINVAL);
 717         }
 718
 719         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 720                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 721                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 722                 return nouveau_abi16_put(abi16, -EINVAL);
 723         }
 724
 725         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 726                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 727                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 728                 return nouveau_abi16_put(abi16, -EINVAL);
 729         }
 730
 731         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 732         if (IS_ERR(push))
 733                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 734
 735         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 736         if (IS_ERR(bo)) {
 737                 u_free(push);
 738                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 739         }
 740
 741         /* Ensure all push buffers are on validate list */
 742         for (i = 0; i < req->nr_push; i++) {
 743                 if (push[i].bo_index >= req->nr_buffers) {
 744                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 745                         ret = -EINVAL;
 746                         goto out_prevalid;
 747                 }
 748         }
 749
 750         /* Validate buffer list */
 751         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 752                                            req->nr_buffers, &op, &do_reloc);
 753         if (ret) {
 754                 if (ret != -ERESTARTSYS)
 755                         NV_ERROR(cli, "validate: %d\n", ret);
 756                 goto out_prevalid;
 757         }
 758
 759         /* Apply any relocations that are required */
 760         if (do_reloc) {
 761                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 762                 if (ret) {
 763                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 764                         goto out;
 765                 }
 766         }
 767
 768         if (chan->dma.ib_max) {
 769                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 770                 if (ret) {
 771                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 772                         goto out;
 773                 }
 774
 775                 for (i = 0; i < req->nr_push; i++) {
 776                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 777                                 bo[push[i].bo_index].user_priv;
 778
 779                         nv50_dma_push(chan, nvbo, push[i].offset,
 780                                       push[i].length);
 781                 }
 782         } else
 783         if (nv_device(drm->device)->chipset >= 0x25) {
 784                 ret = RING_SPACE(chan, req->nr_push * 2);
 785                 if (ret) {
 786                         NV_ERROR(cli, "cal_space: %d\n", ret);
 787                         goto out;
 788                 }
 789
 790                 for (i = 0; i < req->nr_push; i++) {
 791                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 792                                 bo[push[i].bo_index].user_priv;
 793
 794                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 795                         OUT_RING(chan, 0);
 796                 }
 797         } else {
 798                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 799                 if (ret) {
 800                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 801                         goto out;
 802                 }
 803
 804                 for (i = 0; i < req->nr_push; i++) {
 805                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 806                                 bo[push[i].bo_index].user_priv;
 807                         uint32_t cmd;
 808
 809                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 810                         cmd |= 0x20000000;
 811                         if (unlikely(cmd != req->suffix0)) {
 812                                 if (!nvbo->kmap.virtual) {
 813                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 814                                                           nvbo->bo.mem.
 815                                                           num_pages,
 816                                                           &nvbo->kmap);
 817                                         if (ret) {
 818                                                 WIND_RING(chan);
 819                                                 goto out;
 820                                         }
 821                                         nvbo->validate_mapped = true;
 822                                 }
 823
 824                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 825                                                 push[i].length - 8) / 4, cmd);
 826                         }
 827
 828                         OUT_RING(chan, 0x20000000 |
 829                                       (nvbo->bo.offset + push[i].offset));
 830                         OUT_RING(chan, 0);
 831                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 832                                 OUT_RING(chan, 0);
 833                 }
 834         }
 835
 836         ret = nouveau_fence_new(chan, false, &fence);
 837         if (ret) {
 838                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 839                 WIND_RING(chan);
 840                 goto out;
 841         }
 842
 843 out:
 844         validate_fini(&op, fence);
 845         nouveau_fence_unref(&fence);
 846
 847 out_prevalid:
 848         u_free(bo);
 849         u_free(push);
 850
 851 out_next:
 852         if (chan->dma.ib_max) {
 853                 req->suffix0 = 0x00000000;
 854                 req->suffix1 = 0x00000000;
 855         } else
 856         if (nv_device(drm->device)->chipset >= 0x25) {
 857                 req->suffix0 = 0x00020000;
 858                 req->suffix1 = 0x00000000;
 859         } else {
 860                 req->suffix0 = 0x20000000 |
 861                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 862                 req->suffix1 = 0x00000000;
 863         }
 864
 865         return nouveau_abi16_put(abi16, ret);
 866 }
 867
 868 static inline uint32_t
 869 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 870 {
 871         uint32_t flags = 0;
 872
 873         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 874                 flags |= TTM_PL_FLAG_VRAM;
 875         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 876                 flags |= TTM_PL_FLAG_TT;
 877
 878         return flags;
 879 }
 880
 881 int
 882 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 883                            struct drm_file *file_priv)
 884 {
 885         struct drm_nouveau_gem_cpu_prep *req = data;
 886         struct drm_gem_object *gem;
 887         struct nouveau_bo *nvbo;
 888         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 889         int ret = -EINVAL;
 890
 891         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 892         if (!gem)
 893                 return -ENOENT;
 894         nvbo = nouveau_gem_object(gem);
 895
 896         spin_lock(&nvbo->bo.bdev->fence_lock);
 897         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 898         spin_unlock(&nvbo->bo.bdev->fence_lock);
 899         drm_gem_object_unreference_unlocked(gem);
 900         return ret;
 901 }
 902
 903 int
 904 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 905                            struct drm_file *file_priv)
 906 {
 907         return 0;
 908 }
 909
 910 int
 911 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 912                        struct drm_file *file_priv)
 913 {
 914         struct drm_nouveau_gem_info *req = data;
 915         struct drm_gem_object *gem;
 916         int ret;
 917
 918         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 919         if (!gem)
 920                 return -ENOENT;
 921
 922         ret = nouveau_gem_info(file_priv, gem, req);
 923         drm_gem_object_unreference_unlocked(gem);
 924         return ret;
 925 }
 926