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