drivers/gpu/drm/nouveau/nouveau_gem.c

   1 /*
   2  * Copyright (C) 2008 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <subdev/fb.h>
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_fence.h"
  32 #include "nouveau_abi16.h"
  33
  34 #include "nouveau_ttm.h"
  35 #include "nouveau_gem.h"
  36
  37 int
  38 nouveau_gem_object_new(struct drm_gem_object *gem)
  39 {
  40         return 0;
  41 }
  42
  43 void
  44 nouveau_gem_object_del(struct drm_gem_object *gem)
  45 {
  46         struct nouveau_bo *nvbo = gem->driver_private;
  47         struct ttm_buffer_object *bo = &nvbo->bo;
  48
  49         if (!nvbo)
  50                 return;
  51         nvbo->gem = NULL;
  52
  53         /* Lockdep hates you for doing reserve with gem object lock held */
  54         if (WARN_ON_ONCE(nvbo->pin_refcnt)) {
  55                 nvbo->pin_refcnt = 1;
  56                 nouveau_bo_unpin(nvbo);
  57         }
  58
  59         if (gem->import_attach)
  60                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  61
  62         ttm_bo_unref(&bo);
  63
  64         drm_gem_object_release(gem);
  65         kfree(gem);
  66 }
  67
  68 int
  69 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  70 {
  71         struct nouveau_cli *cli = nouveau_cli(file_priv);
  72         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  73         struct nouveau_vma *vma;
  74         int ret;
  75
  76         if (!cli->base.vm)
  77                 return 0;
  78
  79         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  80         if (ret)
  81                 return ret;
  82
  83         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  84         if (!vma) {
  85                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  86                 if (!vma) {
  87                         ret = -ENOMEM;
  88                         goto out;
  89                 }
  90
  91                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  92                 if (ret) {
  93                         kfree(vma);
  94                         goto out;
  95                 }
  96         } else {
  97                 vma->refcount++;
  98         }
  99
 100 out:
 101         ttm_bo_unreserve(&nvbo->bo);
 102         return ret;
 103 }
 104
 105 static void
 106 nouveau_gem_object_delete(void *data)
 107 {
 108         struct nouveau_vma *vma = data;
 109         nouveau_vm_unmap(vma);
 110         nouveau_vm_put(vma);
 111         kfree(vma);
 112 }
 113
 114 static void
 115 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 116 {
 117         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 118         struct nouveau_fence *fence = NULL;
 119
 120         list_del(&vma->head);
 121
 122         if (mapped) {
 123                 spin_lock(&nvbo->bo.bdev->fence_lock);
 124                 if (nvbo->bo.sync_obj)
 125                         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 126                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 127         }
 128
 129         if (fence) {
 130                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 131         } else {
 132                 if (mapped)
 133                         nouveau_vm_unmap(vma);
 134                 nouveau_vm_put(vma);
 135                 kfree(vma);
 136         }
 137         nouveau_fence_unref(&fence);
 138 }
 139
 140 void
 141 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 142 {
 143         struct nouveau_cli *cli = nouveau_cli(file_priv);
 144         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 145         struct nouveau_vma *vma;
 146         int ret;
 147
 148         if (!cli->base.vm)
 149                 return;
 150
 151         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 152         if (ret)
 153                 return;
 154
 155         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 156         if (vma) {
 157                 if (--vma->refcount == 0)
 158                         nouveau_gem_object_unmap(nvbo, vma);
 159         }
 160         ttm_bo_unreserve(&nvbo->bo);
 161 }
 162
 163 int
 164 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 165                 uint32_t tile_mode, uint32_t tile_flags,
 166                 struct nouveau_bo **pnvbo)
 167 {
 168         struct nouveau_drm *drm = nouveau_drm(dev);
 169         struct nouveau_bo *nvbo;
 170         u32 flags = 0;
 171         int ret;
 172
 173         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 174                 flags |= TTM_PL_FLAG_VRAM;
 175         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 176                 flags |= TTM_PL_FLAG_TT;
 177         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 178                 flags |= TTM_PL_FLAG_SYSTEM;
 179
 180         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 181                              tile_flags, NULL, pnvbo);
 182         if (ret)
 183                 return ret;
 184         nvbo = *pnvbo;
 185
 186         /* we restrict allowed domains on nv50+ to only the types
 187          * that were requested at creation time.  not possibly on
 188          * earlier chips without busting the ABI.
 189          */
 190         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 191                               NOUVEAU_GEM_DOMAIN_GART;
 192         if (nv_device(drm->device)->card_type >= NV_50)
 193                 nvbo->valid_domains &= domain;
 194
 195         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 196         if (!nvbo->gem) {
 197                 nouveau_bo_ref(NULL, pnvbo);
 198                 return -ENOMEM;
 199         }
 200
 201         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 202         nvbo->gem->driver_private = nvbo;
 203         return 0;
 204 }
 205
 206 static int
 207 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 208                  struct drm_nouveau_gem_info *rep)
 209 {
 210         struct nouveau_cli *cli = nouveau_cli(file_priv);
 211         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 212         struct nouveau_vma *vma;
 213
 214         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 215                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 216         else
 217                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 218
 219         rep->offset = nvbo->bo.offset;
 220         if (cli->base.vm) {
 221                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 222                 if (!vma)
 223                         return -EINVAL;
 224
 225                 rep->offset = vma->offset;
 226         }
 227
 228         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 229         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 230         rep->tile_mode = nvbo->tile_mode;
 231         rep->tile_flags = nvbo->tile_flags;
 232         return 0;
 233 }
 234
 235 int
 236 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 237                       struct drm_file *file_priv)
 238 {
 239         struct nouveau_drm *drm = nouveau_drm(dev);
 240         struct nouveau_cli *cli = nouveau_cli(file_priv);
 241         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 242         struct drm_nouveau_gem_new *req = data;
 243         struct nouveau_bo *nvbo = NULL;
 244         int ret = 0;
 245
 246         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 247
 248         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 249                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 250                 return -EINVAL;
 251         }
 252
 253         ret = nouveau_gem_new(dev, req->info.size, req->align,
 254                               req->info.domain, req->info.tile_mode,
 255                               req->info.tile_flags, &nvbo);
 256         if (ret)
 257                 return ret;
 258
 259         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 260         if (ret == 0) {
 261                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 262                 if (ret)
 263                         drm_gem_handle_delete(file_priv, req->info.handle);
 264         }
 265
 266         /* drop reference from allocate - handle holds it now */
 267         drm_gem_object_unreference_unlocked(nvbo->gem);
 268         return ret;
 269 }
 270
 271 static int
 272 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 273                        uint32_t write_domains, uint32_t valid_domains)
 274 {
 275         struct nouveau_bo *nvbo = gem->driver_private;
 276         struct ttm_buffer_object *bo = &nvbo->bo;
 277         uint32_t domains = valid_domains & nvbo->valid_domains &
 278                 (write_domains ? write_domains : read_domains);
 279         uint32_t pref_flags = 0, valid_flags = 0;
 280
 281         if (!domains)
 282                 return -EINVAL;
 283
 284         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 285                 valid_flags |= TTM_PL_FLAG_VRAM;
 286
 287         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 288                 valid_flags |= TTM_PL_FLAG_TT;
 289
 290         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 291             bo->mem.mem_type == TTM_PL_VRAM)
 292                 pref_flags |= TTM_PL_FLAG_VRAM;
 293
 294         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 295                  bo->mem.mem_type == TTM_PL_TT)
 296                 pref_flags |= TTM_PL_FLAG_TT;
 297
 298         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 299                 pref_flags |= TTM_PL_FLAG_VRAM;
 300
 301         else
 302                 pref_flags |= TTM_PL_FLAG_TT;
 303
 304         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 305
 306         return 0;
 307 }
 308
 309 struct validate_op {
 310         struct list_head vram_list;
 311         struct list_head gart_list;
 312         struct list_head both_list;
 313         struct ww_acquire_ctx ticket;
 314 };
 315
 316 static void
 317 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 318                    struct ww_acquire_ctx *ticket)
 319 {
 320         struct list_head *entry, *tmp;
 321         struct nouveau_bo *nvbo;
 322
 323         list_for_each_safe(entry, tmp, list) {
 324                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 325
 326                 nouveau_bo_fence(nvbo, fence);
 327
 328                 if (unlikely(nvbo->validate_mapped)) {
 329                         ttm_bo_kunmap(&nvbo->kmap);
 330                         nvbo->validate_mapped = false;
 331                 }
 332
 333                 list_del(&nvbo->entry);
 334                 nvbo->reserved_by = NULL;
 335                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 336                 drm_gem_object_unreference_unlocked(nvbo->gem);
 337         }
 338 }
 339
 340 static void
 341 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 342 {
 343         validate_fini_list(&op->vram_list, fence, &op->ticket);
 344         validate_fini_list(&op->gart_list, fence, &op->ticket);
 345         validate_fini_list(&op->both_list, fence, &op->ticket);
 346 }
 347
 348 static void
 349 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 350 {
 351         validate_fini_no_ticket(op, fence);
 352         ww_acquire_fini(&op->ticket);
 353 }
 354
 355 static int
 356 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 357               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 358               int nr_buffers, struct validate_op *op)
 359 {
 360         struct nouveau_cli *cli = nouveau_cli(file_priv);
 361         struct drm_device *dev = chan->drm->dev;
 362         int trycnt = 0;
 363         int ret, i;
 364         struct nouveau_bo *res_bo = NULL;
 365
 366         ww_acquire_init(&op->ticket, &reservation_ww_class);
 367 retry:
 368         if (++trycnt > 100000) {
 369                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 370                 return -EINVAL;
 371         }
 372
 373         for (i = 0; i < nr_buffers; i++) {
 374                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 375                 struct drm_gem_object *gem;
 376                 struct nouveau_bo *nvbo;
 377
 378                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 379                 if (!gem) {
 380                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 381                         ww_acquire_done(&op->ticket);
 382                         validate_fini(op, NULL);
 383                         return -ENOENT;
 384                 }
 385                 nvbo = gem->driver_private;
 386                 if (nvbo == res_bo) {
 387                         res_bo = NULL;
 388                         drm_gem_object_unreference_unlocked(gem);
 389                         continue;
 390                 }
 391
 392                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 393                         NV_ERROR(cli, "multiple instances of buffer %d on "
 394                                       "validation list\n", b->handle);
 395                         drm_gem_object_unreference_unlocked(gem);
 396                         ww_acquire_done(&op->ticket);
 397                         validate_fini(op, NULL);
 398                         return -EINVAL;
 399                 }
 400
 401                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 402                 if (ret) {
 403                         validate_fini_no_ticket(op, NULL);
 404                         if (unlikely(ret == -EDEADLK)) {
 405                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 406                                                               &op->ticket);
 407                                 if (!ret)
 408                                         res_bo = nvbo;
 409                         }
 410                         if (unlikely(ret)) {
 411                                 ww_acquire_done(&op->ticket);
 412                                 ww_acquire_fini(&op->ticket);
 413                                 drm_gem_object_unreference_unlocked(gem);
 414                                 if (ret != -ERESTARTSYS)
 415                                         NV_ERROR(cli, "fail reserve\n");
 416                                 return ret;
 417                         }
 418                 }
 419
 420                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 421                 nvbo->reserved_by = file_priv;
 422                 nvbo->pbbo_index = i;
 423                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 424                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 425                         list_add_tail(&nvbo->entry, &op->both_list);
 426                 else
 427                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 428                         list_add_tail(&nvbo->entry, &op->vram_list);
 429                 else
 430                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 431                         list_add_tail(&nvbo->entry, &op->gart_list);
 432                 else {
 433                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 434                                  b->valid_domains);
 435                         list_add_tail(&nvbo->entry, &op->both_list);
 436                         ww_acquire_done(&op->ticket);
 437                         validate_fini(op, NULL);
 438                         return -EINVAL;
 439                 }
 440                 if (nvbo == res_bo)
 441                         goto retry;
 442         }
 443
 444         ww_acquire_done(&op->ticket);
 445         return 0;
 446 }
 447
 448 static int
 449 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 450 {
 451         struct nouveau_fence *fence = NULL;
 452         int ret = 0;
 453
 454         spin_lock(&nvbo->bo.bdev->fence_lock);
 455         if (nvbo->bo.sync_obj)
 456                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 457         spin_unlock(&nvbo->bo.bdev->fence_lock);
 458
 459         if (fence) {
 460                 ret = nouveau_fence_sync(fence, chan);
 461                 nouveau_fence_unref(&fence);
 462         }
 463
 464         return ret;
 465 }
 466
 467 static int
 468 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 469               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 470               uint64_t user_pbbo_ptr)
 471 {
 472         struct nouveau_drm *drm = chan->drm;
 473         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 474                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 475         struct nouveau_bo *nvbo;
 476         int ret, relocs = 0;
 477
 478         list_for_each_entry(nvbo, list, entry) {
 479                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 480
 481                 ret = validate_sync(chan, nvbo);
 482                 if (unlikely(ret)) {
 483                         NV_ERROR(cli, "fail pre-validate sync\n");
 484                         return ret;
 485                 }
 486
 487                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 488                                              b->write_domains,
 489                                              b->valid_domains);
 490                 if (unlikely(ret)) {
 491                         NV_ERROR(cli, "fail set_domain\n");
 492                         return ret;
 493                 }
 494
 495                 ret = nouveau_bo_validate(nvbo, true, false);
 496                 if (unlikely(ret)) {
 497                         if (ret != -ERESTARTSYS)
 498                                 NV_ERROR(cli, "fail ttm_validate\n");
 499                         return ret;
 500                 }
 501
 502                 ret = validate_sync(chan, nvbo);
 503                 if (unlikely(ret)) {
 504                         NV_ERROR(cli, "fail post-validate sync\n");
 505                         return ret;
 506                 }
 507
 508                 if (nv_device(drm->device)->card_type < NV_50) {
 509                         if (nvbo->bo.offset == b->presumed.offset &&
 510                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 511                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 512                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 513                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 514                                 continue;
 515
 516                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 517                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 518                         else
 519                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 520                         b->presumed.offset = nvbo->bo.offset;
 521                         b->presumed.valid = 0;
 522                         relocs++;
 523
 524                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 525                                              &b->presumed, sizeof(b->presumed)))
 526                                 return -EFAULT;
 527                 }
 528         }
 529
 530         return relocs;
 531 }
 532
 533 static int
 534 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 535                              struct drm_file *file_priv,
 536                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 537                              uint64_t user_buffers, int nr_buffers,
 538                              struct validate_op *op, int *apply_relocs)
 539 {
 540         struct nouveau_cli *cli = nouveau_cli(file_priv);
 541         int ret, relocs = 0;
 542
 543         INIT_LIST_HEAD(&op->vram_list);
 544         INIT_LIST_HEAD(&op->gart_list);
 545         INIT_LIST_HEAD(&op->both_list);
 546
 547         if (nr_buffers == 0)
 548                 return 0;
 549
 550         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 551         if (unlikely(ret)) {
 552                 if (ret != -ERESTARTSYS)
 553                         NV_ERROR(cli, "validate_init\n");
 554                 return ret;
 555         }
 556
 557         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 558         if (unlikely(ret < 0)) {
 559                 if (ret != -ERESTARTSYS)
 560                         NV_ERROR(cli, "validate vram_list\n");
 561                 validate_fini(op, NULL);
 562                 return ret;
 563         }
 564         relocs += ret;
 565
 566         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 567         if (unlikely(ret < 0)) {
 568                 if (ret != -ERESTARTSYS)
 569                         NV_ERROR(cli, "validate gart_list\n");
 570                 validate_fini(op, NULL);
 571                 return ret;
 572         }
 573         relocs += ret;
 574
 575         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 576         if (unlikely(ret < 0)) {
 577                 if (ret != -ERESTARTSYS)
 578                         NV_ERROR(cli, "validate both_list\n");
 579                 validate_fini(op, NULL);
 580                 return ret;
 581         }
 582         relocs += ret;
 583
 584         *apply_relocs = relocs;
 585         return 0;
 586 }
 587
 588 static inline void *
 589 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 590 {
 591         void *mem;
 592         void __user *userptr = (void __force __user *)(uintptr_t)user;
 593
 594         mem = kmalloc(nmemb * size, GFP_KERNEL);
 595         if (!mem)
 596                 return ERR_PTR(-ENOMEM);
 597
 598         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 599                 kfree(mem);
 600                 return ERR_PTR(-EFAULT);
 601         }
 602
 603         return mem;
 604 }
 605
 606 static int
 607 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 608                                 struct drm_nouveau_gem_pushbuf *req,
 609                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 610 {
 611         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 612         int ret = 0;
 613         unsigned i;
 614
 615         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 616         if (IS_ERR(reloc))
 617                 return PTR_ERR(reloc);
 618
 619         for (i = 0; i < req->nr_relocs; i++) {
 620                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 621                 struct drm_nouveau_gem_pushbuf_bo *b;
 622                 struct nouveau_bo *nvbo;
 623                 uint32_t data;
 624
 625                 if (unlikely(r->bo_index > req->nr_buffers)) {
 626                         NV_ERROR(cli, "reloc bo index invalid\n");
 627                         ret = -EINVAL;
 628                         break;
 629                 }
 630
 631                 b = &bo[r->bo_index];
 632                 if (b->presumed.valid)
 633                         continue;
 634
 635                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 636                         NV_ERROR(cli, "reloc container bo index invalid\n");
 637                         ret = -EINVAL;
 638                         break;
 639                 }
 640                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 641
 642                 if (unlikely(r->reloc_bo_offset + 4 >
 643                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 644                         NV_ERROR(cli, "reloc outside of bo\n");
 645                         ret = -EINVAL;
 646                         break;
 647                 }
 648
 649                 if (!nvbo->kmap.virtual) {
 650                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 651                                           &nvbo->kmap);
 652                         if (ret) {
 653                                 NV_ERROR(cli, "failed kmap for reloc\n");
 654                                 break;
 655                         }
 656                         nvbo->validate_mapped = true;
 657                 }
 658
 659                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 660                         data = b->presumed.offset + r->data;
 661                 else
 662                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 663                         data = (b->presumed.offset + r->data) >> 32;
 664                 else
 665                         data = r->data;
 666
 667                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 668                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 669                                 data |= r->tor;
 670                         else
 671                                 data |= r->vor;
 672                 }
 673
 674                 spin_lock(&nvbo->bo.bdev->fence_lock);
 675                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 676                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 677                 if (ret) {
 678                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 679                         break;
 680                 }
 681
 682                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 683         }
 684
 685         kfree(reloc);
 686         return ret;
 687 }
 688
 689 int
 690 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 691                           struct drm_file *file_priv)
 692 {
 693         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 694         struct nouveau_cli *cli = nouveau_cli(file_priv);
 695         struct nouveau_abi16_chan *temp;
 696         struct nouveau_drm *drm = nouveau_drm(dev);
 697         struct drm_nouveau_gem_pushbuf *req = data;
 698         struct drm_nouveau_gem_pushbuf_push *push;
 699         struct drm_nouveau_gem_pushbuf_bo *bo;
 700         struct nouveau_channel *chan = NULL;
 701         struct validate_op op;
 702         struct nouveau_fence *fence = NULL;
 703         int i, j, ret = 0, do_reloc = 0;
 704
 705         if (unlikely(!abi16))
 706                 return -ENOMEM;
 707
 708         list_for_each_entry(temp, &abi16->channels, head) {
 709                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 710                         chan = temp->chan;
 711                         break;
 712                 }
 713         }
 714
 715         if (!chan)
 716                 return nouveau_abi16_put(abi16, -ENOENT);
 717
 718         req->vram_available = drm->gem.vram_available;
 719         req->gart_available = drm->gem.gart_available;
 720         if (unlikely(req->nr_push == 0))
 721                 goto out_next;
 722
 723         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 724                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 725                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 726                 return nouveau_abi16_put(abi16, -EINVAL);
 727         }
 728
 729         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 730                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 731                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 732                 return nouveau_abi16_put(abi16, -EINVAL);
 733         }
 734
 735         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 736                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 737                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 738                 return nouveau_abi16_put(abi16, -EINVAL);
 739         }
 740
 741         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 742         if (IS_ERR(push))
 743                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 744
 745         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 746         if (IS_ERR(bo)) {
 747                 kfree(push);
 748                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 749         }
 750
 751         /* Ensure all push buffers are on validate list */
 752         for (i = 0; i < req->nr_push; i++) {
 753                 if (push[i].bo_index >= req->nr_buffers) {
 754                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 755                         ret = -EINVAL;
 756                         goto out_prevalid;
 757                 }
 758         }
 759
 760         /* Validate buffer list */
 761         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 762                                            req->nr_buffers, &op, &do_reloc);
 763         if (ret) {
 764                 if (ret != -ERESTARTSYS)
 765                         NV_ERROR(cli, "validate: %d\n", ret);
 766                 goto out_prevalid;
 767         }
 768
 769         /* Apply any relocations that are required */
 770         if (do_reloc) {
 771                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 772                 if (ret) {
 773                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 774                         goto out;
 775                 }
 776         }
 777
 778         if (chan->dma.ib_max) {
 779                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 780                 if (ret) {
 781                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 782                         goto out;
 783                 }
 784
 785                 for (i = 0; i < req->nr_push; i++) {
 786                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 787                                 bo[push[i].bo_index].user_priv;
 788
 789                         nv50_dma_push(chan, nvbo, push[i].offset,
 790                                       push[i].length);
 791                 }
 792         } else
 793         if (nv_device(drm->device)->chipset >= 0x25) {
 794                 ret = RING_SPACE(chan, req->nr_push * 2);
 795                 if (ret) {
 796                         NV_ERROR(cli, "cal_space: %d\n", ret);
 797                         goto out;
 798                 }
 799
 800                 for (i = 0; i < req->nr_push; i++) {
 801                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 802                                 bo[push[i].bo_index].user_priv;
 803
 804                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 805                         OUT_RING(chan, 0);
 806                 }
 807         } else {
 808                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 809                 if (ret) {
 810                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 811                         goto out;
 812                 }
 813
 814                 for (i = 0; i < req->nr_push; i++) {
 815                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 816                                 bo[push[i].bo_index].user_priv;
 817                         uint32_t cmd;
 818
 819                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 820                         cmd |= 0x20000000;
 821                         if (unlikely(cmd != req->suffix0)) {
 822                                 if (!nvbo->kmap.virtual) {
 823                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 824                                                           nvbo->bo.mem.
 825                                                           num_pages,
 826                                                           &nvbo->kmap);
 827                                         if (ret) {
 828                                                 WIND_RING(chan);
 829                                                 goto out;
 830                                         }
 831                                         nvbo->validate_mapped = true;
 832                                 }
 833
 834                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 835                                                 push[i].length - 8) / 4, cmd);
 836                         }
 837
 838                         OUT_RING(chan, 0x20000000 |
 839                                       (nvbo->bo.offset + push[i].offset));
 840                         OUT_RING(chan, 0);
 841                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 842                                 OUT_RING(chan, 0);
 843                 }
 844         }
 845
 846         ret = nouveau_fence_new(chan, false, &fence);
 847         if (ret) {
 848                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 849                 WIND_RING(chan);
 850                 goto out;
 851         }
 852
 853 out:
 854         validate_fini(&op, fence);
 855         nouveau_fence_unref(&fence);
 856
 857 out_prevalid:
 858         kfree(bo);
 859         kfree(push);
 860
 861 out_next:
 862         if (chan->dma.ib_max) {
 863                 req->suffix0 = 0x00000000;
 864                 req->suffix1 = 0x00000000;
 865         } else
 866         if (nv_device(drm->device)->chipset >= 0x25) {
 867                 req->suffix0 = 0x00020000;
 868                 req->suffix1 = 0x00000000;
 869         } else {
 870                 req->suffix0 = 0x20000000 |
 871                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 872                 req->suffix1 = 0x00000000;
 873         }
 874
 875         return nouveau_abi16_put(abi16, ret);
 876 }
 877
 878 static inline uint32_t
 879 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 880 {
 881         uint32_t flags = 0;
 882
 883         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 884                 flags |= TTM_PL_FLAG_VRAM;
 885         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 886                 flags |= TTM_PL_FLAG_TT;
 887
 888         return flags;
 889 }
 890
 891 int
 892 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 893                            struct drm_file *file_priv)
 894 {
 895         struct drm_nouveau_gem_cpu_prep *req = data;
 896         struct drm_gem_object *gem;
 897         struct nouveau_bo *nvbo;
 898         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 899         int ret = -EINVAL;
 900
 901         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 902         if (!gem)
 903                 return -ENOENT;
 904         nvbo = nouveau_gem_object(gem);
 905
 906         spin_lock(&nvbo->bo.bdev->fence_lock);
 907         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 908         spin_unlock(&nvbo->bo.bdev->fence_lock);
 909         drm_gem_object_unreference_unlocked(gem);
 910         return ret;
 911 }
 912
 913 int
 914 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 915                            struct drm_file *file_priv)
 916 {
 917         return 0;
 918 }
 919
 920 int
 921 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 922                        struct drm_file *file_priv)
 923 {
 924         struct drm_nouveau_gem_info *req = data;
 925         struct drm_gem_object *gem;
 926         int ret;
 927
 928         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 929         if (!gem)
 930                 return -ENOENT;
 931
 932         ret = nouveau_gem_info(file_priv, gem, req);
 933         drm_gem_object_unreference_unlocked(gem);
 934         return ret;
 935 }
 936