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 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         if (gem->import_attach)
  54                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  55
  56         ttm_bo_unref(&bo);
  57
  58         drm_gem_object_release(gem);
  59         kfree(gem);
  60 }
  61
  62 int
  63 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  64 {
  65         struct nouveau_cli *cli = nouveau_cli(file_priv);
  66         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  67         struct nouveau_vma *vma;
  68         int ret;
  69
  70         if (!cli->base.vm)
  71                 return 0;
  72
  73         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  74         if (ret)
  75                 return ret;
  76
  77         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  78         if (!vma) {
  79                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  80                 if (!vma) {
  81                         ret = -ENOMEM;
  82                         goto out;
  83                 }
  84
  85                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  86                 if (ret) {
  87                         kfree(vma);
  88                         goto out;
  89                 }
  90         } else {
  91                 vma->refcount++;
  92         }
  93
  94 out:
  95         ttm_bo_unreserve(&nvbo->bo);
  96         return ret;
  97 }
  98
  99 static void
 100 nouveau_gem_object_delete(void *data)
 101 {
 102         struct nouveau_vma *vma = data;
 103         nouveau_vm_unmap(vma);
 104         nouveau_vm_put(vma);
 105         kfree(vma);
 106 }
 107
 108 static void
 109 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 110 {
 111         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 112         struct nouveau_fence *fence = NULL;
 113
 114         list_del(&vma->head);
 115
 116         if (mapped) {
 117                 spin_lock(&nvbo->bo.bdev->fence_lock);
 118                 if (nvbo->bo.sync_obj)
 119                         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 120                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 121         }
 122
 123         if (fence) {
 124                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 125         } else {
 126                 if (mapped)
 127                         nouveau_vm_unmap(vma);
 128                 nouveau_vm_put(vma);
 129                 kfree(vma);
 130         }
 131         nouveau_fence_unref(&fence);
 132 }
 133
 134 void
 135 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 136 {
 137         struct nouveau_cli *cli = nouveau_cli(file_priv);
 138         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 139         struct nouveau_vma *vma;
 140         int ret;
 141
 142         if (!cli->base.vm)
 143                 return;
 144
 145         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 146         if (ret)
 147                 return;
 148
 149         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 150         if (vma) {
 151                 if (--vma->refcount == 0)
 152                         nouveau_gem_object_unmap(nvbo, vma);
 153         }
 154         ttm_bo_unreserve(&nvbo->bo);
 155 }
 156
 157 int
 158 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 159                 uint32_t tile_mode, uint32_t tile_flags,
 160                 struct nouveau_bo **pnvbo)
 161 {
 162         struct nouveau_drm *drm = nouveau_drm(dev);
 163         struct nouveau_bo *nvbo;
 164         u32 flags = 0;
 165         int ret;
 166
 167         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 168                 flags |= TTM_PL_FLAG_VRAM;
 169         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 170                 flags |= TTM_PL_FLAG_TT;
 171         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 172                 flags |= TTM_PL_FLAG_SYSTEM;
 173
 174         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 175                              tile_flags, NULL, pnvbo);
 176         if (ret)
 177                 return ret;
 178         nvbo = *pnvbo;
 179
 180         /* we restrict allowed domains on nv50+ to only the types
 181          * that were requested at creation time.  not possibly on
 182          * earlier chips without busting the ABI.
 183          */
 184         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 185                               NOUVEAU_GEM_DOMAIN_GART;
 186         if (nv_device(drm->device)->card_type >= NV_50)
 187                 nvbo->valid_domains &= domain;
 188
 189         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 190         if (!nvbo->gem) {
 191                 nouveau_bo_ref(NULL, pnvbo);
 192                 return -ENOMEM;
 193         }
 194
 195         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 196         nvbo->gem->driver_private = nvbo;
 197         return 0;
 198 }
 199
 200 static int
 201 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 202                  struct drm_nouveau_gem_info *rep)
 203 {
 204         struct nouveau_cli *cli = nouveau_cli(file_priv);
 205         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 206         struct nouveau_vma *vma;
 207
 208         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 209                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 210         else
 211                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 212
 213         rep->offset = nvbo->bo.offset;
 214         if (cli->base.vm) {
 215                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 216                 if (!vma)
 217                         return -EINVAL;
 218
 219                 rep->offset = vma->offset;
 220         }
 221
 222         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 223         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 224         rep->tile_mode = nvbo->tile_mode;
 225         rep->tile_flags = nvbo->tile_flags;
 226         return 0;
 227 }
 228
 229 int
 230 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 231                       struct drm_file *file_priv)
 232 {
 233         struct nouveau_drm *drm = nouveau_drm(dev);
 234         struct nouveau_cli *cli = nouveau_cli(file_priv);
 235         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 236         struct drm_nouveau_gem_new *req = data;
 237         struct nouveau_bo *nvbo = NULL;
 238         int ret = 0;
 239
 240         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 241
 242         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 243                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 244                 return -EINVAL;
 245         }
 246
 247         ret = nouveau_gem_new(dev, req->info.size, req->align,
 248                               req->info.domain, req->info.tile_mode,
 249                               req->info.tile_flags, &nvbo);
 250         if (ret)
 251                 return ret;
 252
 253         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 254         if (ret == 0) {
 255                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 256                 if (ret)
 257                         drm_gem_handle_delete(file_priv, req->info.handle);
 258         }
 259
 260         /* drop reference from allocate - handle holds it now */
 261         drm_gem_object_unreference_unlocked(nvbo->gem);
 262         return ret;
 263 }
 264
 265 static int
 266 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 267                        uint32_t write_domains, uint32_t valid_domains)
 268 {
 269         struct nouveau_bo *nvbo = gem->driver_private;
 270         struct ttm_buffer_object *bo = &nvbo->bo;
 271         uint32_t domains = valid_domains & nvbo->valid_domains &
 272                 (write_domains ? write_domains : read_domains);
 273         uint32_t pref_flags = 0, valid_flags = 0;
 274
 275         if (!domains)
 276                 return -EINVAL;
 277
 278         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 279                 valid_flags |= TTM_PL_FLAG_VRAM;
 280
 281         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 282                 valid_flags |= TTM_PL_FLAG_TT;
 283
 284         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 285             bo->mem.mem_type == TTM_PL_VRAM)
 286                 pref_flags |= TTM_PL_FLAG_VRAM;
 287
 288         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 289                  bo->mem.mem_type == TTM_PL_TT)
 290                 pref_flags |= TTM_PL_FLAG_TT;
 291
 292         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 293                 pref_flags |= TTM_PL_FLAG_VRAM;
 294
 295         else
 296                 pref_flags |= TTM_PL_FLAG_TT;
 297
 298         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 299
 300         return 0;
 301 }
 302
 303 struct validate_op {
 304         struct list_head vram_list;
 305         struct list_head gart_list;
 306         struct list_head both_list;
 307         struct ww_acquire_ctx ticket;
 308 };
 309
 310 static void
 311 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 312                    struct ww_acquire_ctx *ticket)
 313 {
 314         struct list_head *entry, *tmp;
 315         struct nouveau_bo *nvbo;
 316
 317         list_for_each_safe(entry, tmp, list) {
 318                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 319
 320                 nouveau_bo_fence(nvbo, fence);
 321
 322                 if (unlikely(nvbo->validate_mapped)) {
 323                         ttm_bo_kunmap(&nvbo->kmap);
 324                         nvbo->validate_mapped = false;
 325                 }
 326
 327                 list_del(&nvbo->entry);
 328                 nvbo->reserved_by = NULL;
 329                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 330                 drm_gem_object_unreference_unlocked(nvbo->gem);
 331         }
 332 }
 333
 334 static void
 335 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 336 {
 337         validate_fini_list(&op->vram_list, fence, &op->ticket);
 338         validate_fini_list(&op->gart_list, fence, &op->ticket);
 339         validate_fini_list(&op->both_list, fence, &op->ticket);
 340 }
 341
 342 static void
 343 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 344 {
 345         validate_fini_no_ticket(op, fence);
 346         ww_acquire_fini(&op->ticket);
 347 }
 348
 349 static int
 350 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 351               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 352               int nr_buffers, struct validate_op *op)
 353 {
 354         struct nouveau_cli *cli = nouveau_cli(file_priv);
 355         struct drm_device *dev = chan->drm->dev;
 356         int trycnt = 0;
 357         int ret, i;
 358         struct nouveau_bo *res_bo = NULL;
 359
 360         ww_acquire_init(&op->ticket, &reservation_ww_class);
 361 retry:
 362         if (++trycnt > 100000) {
 363                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 364                 return -EINVAL;
 365         }
 366
 367         for (i = 0; i < nr_buffers; i++) {
 368                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 369                 struct drm_gem_object *gem;
 370                 struct nouveau_bo *nvbo;
 371
 372                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 373                 if (!gem) {
 374                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 375                         ww_acquire_done(&op->ticket);
 376                         validate_fini(op, NULL);
 377                         return -ENOENT;
 378                 }
 379                 nvbo = gem->driver_private;
 380                 if (nvbo == res_bo) {
 381                         res_bo = NULL;
 382                         drm_gem_object_unreference_unlocked(gem);
 383                         continue;
 384                 }
 385
 386                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 387                         NV_ERROR(cli, "multiple instances of buffer %d on "
 388                                       "validation list\n", b->handle);
 389                         drm_gem_object_unreference_unlocked(gem);
 390                         ww_acquire_done(&op->ticket);
 391                         validate_fini(op, NULL);
 392                         return -EINVAL;
 393                 }
 394
 395                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 396                 if (ret) {
 397                         validate_fini_no_ticket(op, NULL);
 398                         if (unlikely(ret == -EDEADLK)) {
 399                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 400                                                               &op->ticket);
 401                                 if (!ret)
 402                                         res_bo = nvbo;
 403                         }
 404                         if (unlikely(ret)) {
 405                                 ww_acquire_done(&op->ticket);
 406                                 ww_acquire_fini(&op->ticket);
 407                                 drm_gem_object_unreference_unlocked(gem);
 408                                 if (ret != -ERESTARTSYS)
 409                                         NV_ERROR(cli, "fail reserve\n");
 410                                 return ret;
 411                         }
 412                 }
 413
 414                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 415                 nvbo->reserved_by = file_priv;
 416                 nvbo->pbbo_index = i;
 417                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 418                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 419                         list_add_tail(&nvbo->entry, &op->both_list);
 420                 else
 421                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 422                         list_add_tail(&nvbo->entry, &op->vram_list);
 423                 else
 424                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 425                         list_add_tail(&nvbo->entry, &op->gart_list);
 426                 else {
 427                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 428                                  b->valid_domains);
 429                         list_add_tail(&nvbo->entry, &op->both_list);
 430                         ww_acquire_done(&op->ticket);
 431                         validate_fini(op, NULL);
 432                         return -EINVAL;
 433                 }
 434                 if (nvbo == res_bo)
 435                         goto retry;
 436         }
 437
 438         ww_acquire_done(&op->ticket);
 439         return 0;
 440 }
 441
 442 static int
 443 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 444 {
 445         struct nouveau_fence *fence = NULL;
 446         int ret = 0;
 447
 448         spin_lock(&nvbo->bo.bdev->fence_lock);
 449         if (nvbo->bo.sync_obj)
 450                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 451         spin_unlock(&nvbo->bo.bdev->fence_lock);
 452
 453         if (fence) {
 454                 ret = nouveau_fence_sync(fence, chan);
 455                 nouveau_fence_unref(&fence);
 456         }
 457
 458         return ret;
 459 }
 460
 461 static int
 462 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 463               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 464               uint64_t user_pbbo_ptr)
 465 {
 466         struct nouveau_drm *drm = chan->drm;
 467         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 468                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 469         struct nouveau_bo *nvbo;
 470         int ret, relocs = 0;
 471
 472         list_for_each_entry(nvbo, list, entry) {
 473                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 474
 475                 ret = validate_sync(chan, nvbo);
 476                 if (unlikely(ret)) {
 477                         NV_ERROR(cli, "fail pre-validate sync\n");
 478                         return ret;
 479                 }
 480
 481                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 482                                              b->write_domains,
 483                                              b->valid_domains);
 484                 if (unlikely(ret)) {
 485                         NV_ERROR(cli, "fail set_domain\n");
 486                         return ret;
 487                 }
 488
 489                 ret = nouveau_bo_validate(nvbo, true, false);
 490                 if (unlikely(ret)) {
 491                         if (ret != -ERESTARTSYS)
 492                                 NV_ERROR(cli, "fail ttm_validate\n");
 493                         return ret;
 494                 }
 495
 496                 ret = validate_sync(chan, nvbo);
 497                 if (unlikely(ret)) {
 498                         NV_ERROR(cli, "fail post-validate sync\n");
 499                         return ret;
 500                 }
 501
 502                 if (nv_device(drm->device)->card_type < NV_50) {
 503                         if (nvbo->bo.offset == b->presumed.offset &&
 504                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 505                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 506                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 507                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 508                                 continue;
 509
 510                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 511                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 512                         else
 513                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 514                         b->presumed.offset = nvbo->bo.offset;
 515                         b->presumed.valid = 0;
 516                         relocs++;
 517
 518                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 519                                              &b->presumed, sizeof(b->presumed)))
 520                                 return -EFAULT;
 521                 }
 522         }
 523
 524         return relocs;
 525 }
 526
 527 static int
 528 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 529                              struct drm_file *file_priv,
 530                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 531                              uint64_t user_buffers, int nr_buffers,
 532                              struct validate_op *op, int *apply_relocs)
 533 {
 534         struct nouveau_cli *cli = nouveau_cli(file_priv);
 535         int ret, relocs = 0;
 536
 537         INIT_LIST_HEAD(&op->vram_list);
 538         INIT_LIST_HEAD(&op->gart_list);
 539         INIT_LIST_HEAD(&op->both_list);
 540
 541         if (nr_buffers == 0)
 542                 return 0;
 543
 544         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 545         if (unlikely(ret)) {
 546                 if (ret != -ERESTARTSYS)
 547                         NV_ERROR(cli, "validate_init\n");
 548                 return ret;
 549         }
 550
 551         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 552         if (unlikely(ret < 0)) {
 553                 if (ret != -ERESTARTSYS)
 554                         NV_ERROR(cli, "validate vram_list\n");
 555                 validate_fini(op, NULL);
 556                 return ret;
 557         }
 558         relocs += ret;
 559
 560         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 561         if (unlikely(ret < 0)) {
 562                 if (ret != -ERESTARTSYS)
 563                         NV_ERROR(cli, "validate gart_list\n");
 564                 validate_fini(op, NULL);
 565                 return ret;
 566         }
 567         relocs += ret;
 568
 569         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 570         if (unlikely(ret < 0)) {
 571                 if (ret != -ERESTARTSYS)
 572                         NV_ERROR(cli, "validate both_list\n");
 573                 validate_fini(op, NULL);
 574                 return ret;
 575         }
 576         relocs += ret;
 577
 578         *apply_relocs = relocs;
 579         return 0;
 580 }
 581
 582 static inline void
 583 u_free(void *addr)
 584 {
 585         if (!is_vmalloc_addr(addr))
 586                 kfree(addr);
 587         else
 588                 vfree(addr);
 589 }
 590
 591 static inline void *
 592 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 593 {
 594         void *mem;
 595         void __user *userptr = (void __force __user *)(uintptr_t)user;
 596
 597         size *= nmemb;
 598
 599         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 600         if (!mem)
 601                 mem = vmalloc(size);
 602         if (!mem)
 603                 return ERR_PTR(-ENOMEM);
 604
 605         if (DRM_COPY_FROM_USER(mem, userptr, size)) {
 606                 u_free(mem);
 607                 return ERR_PTR(-EFAULT);
 608         }
 609
 610         return mem;
 611 }
 612
 613 static int
 614 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 615                                 struct drm_nouveau_gem_pushbuf *req,
 616                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 617 {
 618         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 619         int ret = 0;
 620         unsigned i;
 621
 622         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 623         if (IS_ERR(reloc))
 624                 return PTR_ERR(reloc);
 625
 626         for (i = 0; i < req->nr_relocs; i++) {
 627                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 628                 struct drm_nouveau_gem_pushbuf_bo *b;
 629                 struct nouveau_bo *nvbo;
 630                 uint32_t data;
 631
 632                 if (unlikely(r->bo_index > req->nr_buffers)) {
 633                         NV_ERROR(cli, "reloc bo index invalid\n");
 634                         ret = -EINVAL;
 635                         break;
 636                 }
 637
 638                 b = &bo[r->bo_index];
 639                 if (b->presumed.valid)
 640                         continue;
 641
 642                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 643                         NV_ERROR(cli, "reloc container bo index invalid\n");
 644                         ret = -EINVAL;
 645                         break;
 646                 }
 647                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 648
 649                 if (unlikely(r->reloc_bo_offset + 4 >
 650                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 651                         NV_ERROR(cli, "reloc outside of bo\n");
 652                         ret = -EINVAL;
 653                         break;
 654                 }
 655
 656                 if (!nvbo->kmap.virtual) {
 657                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 658                                           &nvbo->kmap);
 659                         if (ret) {
 660                                 NV_ERROR(cli, "failed kmap for reloc\n");
 661                                 break;
 662                         }
 663                         nvbo->validate_mapped = true;
 664                 }
 665
 666                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 667                         data = b->presumed.offset + r->data;
 668                 else
 669                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 670                         data = (b->presumed.offset + r->data) >> 32;
 671                 else
 672                         data = r->data;
 673
 674                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 675                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 676                                 data |= r->tor;
 677                         else
 678                                 data |= r->vor;
 679                 }
 680
 681                 spin_lock(&nvbo->bo.bdev->fence_lock);
 682                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 683                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 684                 if (ret) {
 685                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 686                         break;
 687                 }
 688
 689                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 690         }
 691
 692         u_free(reloc);
 693         return ret;
 694 }
 695
 696 int
 697 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 698                           struct drm_file *file_priv)
 699 {
 700         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 701         struct nouveau_cli *cli = nouveau_cli(file_priv);
 702         struct nouveau_abi16_chan *temp;
 703         struct nouveau_drm *drm = nouveau_drm(dev);
 704         struct drm_nouveau_gem_pushbuf *req = data;
 705         struct drm_nouveau_gem_pushbuf_push *push;
 706         struct drm_nouveau_gem_pushbuf_bo *bo;
 707         struct nouveau_channel *chan = NULL;
 708         struct validate_op op;
 709         struct nouveau_fence *fence = NULL;
 710         int i, j, ret = 0, do_reloc = 0;
 711
 712         if (unlikely(!abi16))
 713                 return -ENOMEM;
 714
 715         list_for_each_entry(temp, &abi16->channels, head) {
 716                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 717                         chan = temp->chan;
 718                         break;
 719                 }
 720         }
 721
 722         if (!chan)
 723                 return nouveau_abi16_put(abi16, -ENOENT);
 724
 725         req->vram_available = drm->gem.vram_available;
 726         req->gart_available = drm->gem.gart_available;
 727         if (unlikely(req->nr_push == 0))
 728                 goto out_next;
 729
 730         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 731                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 732                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 733                 return nouveau_abi16_put(abi16, -EINVAL);
 734         }
 735
 736         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 737                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 738                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 739                 return nouveau_abi16_put(abi16, -EINVAL);
 740         }
 741
 742         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 743                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 744                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 745                 return nouveau_abi16_put(abi16, -EINVAL);
 746         }
 747
 748         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 749         if (IS_ERR(push))
 750                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 751
 752         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 753         if (IS_ERR(bo)) {
 754                 u_free(push);
 755                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 756         }
 757
 758         /* Ensure all push buffers are on validate list */
 759         for (i = 0; i < req->nr_push; i++) {
 760                 if (push[i].bo_index >= req->nr_buffers) {
 761                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 762                         ret = -EINVAL;
 763                         goto out_prevalid;
 764                 }
 765         }
 766
 767         /* Validate buffer list */
 768         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 769                                            req->nr_buffers, &op, &do_reloc);
 770         if (ret) {
 771                 if (ret != -ERESTARTSYS)
 772                         NV_ERROR(cli, "validate: %d\n", ret);
 773                 goto out_prevalid;
 774         }
 775
 776         /* Apply any relocations that are required */
 777         if (do_reloc) {
 778                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 779                 if (ret) {
 780                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 781                         goto out;
 782                 }
 783         }
 784
 785         if (chan->dma.ib_max) {
 786                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 787                 if (ret) {
 788                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 789                         goto out;
 790                 }
 791
 792                 for (i = 0; i < req->nr_push; i++) {
 793                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 794                                 bo[push[i].bo_index].user_priv;
 795
 796                         nv50_dma_push(chan, nvbo, push[i].offset,
 797                                       push[i].length);
 798                 }
 799         } else
 800         if (nv_device(drm->device)->chipset >= 0x25) {
 801                 ret = RING_SPACE(chan, req->nr_push * 2);
 802                 if (ret) {
 803                         NV_ERROR(cli, "cal_space: %d\n", ret);
 804                         goto out;
 805                 }
 806
 807                 for (i = 0; i < req->nr_push; i++) {
 808                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 809                                 bo[push[i].bo_index].user_priv;
 810
 811                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 812                         OUT_RING(chan, 0);
 813                 }
 814         } else {
 815                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 816                 if (ret) {
 817                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 818                         goto out;
 819                 }
 820
 821                 for (i = 0; i < req->nr_push; i++) {
 822                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 823                                 bo[push[i].bo_index].user_priv;
 824                         uint32_t cmd;
 825
 826                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 827                         cmd |= 0x20000000;
 828                         if (unlikely(cmd != req->suffix0)) {
 829                                 if (!nvbo->kmap.virtual) {
 830                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 831                                                           nvbo->bo.mem.
 832                                                           num_pages,
 833                                                           &nvbo->kmap);
 834                                         if (ret) {
 835                                                 WIND_RING(chan);
 836                                                 goto out;
 837                                         }
 838                                         nvbo->validate_mapped = true;
 839                                 }
 840
 841                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 842                                                 push[i].length - 8) / 4, cmd);
 843                         }
 844
 845                         OUT_RING(chan, 0x20000000 |
 846                                       (nvbo->bo.offset + push[i].offset));
 847                         OUT_RING(chan, 0);
 848                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 849                                 OUT_RING(chan, 0);
 850                 }
 851         }
 852
 853         ret = nouveau_fence_new(chan, false, &fence);
 854         if (ret) {
 855                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 856                 WIND_RING(chan);
 857                 goto out;
 858         }
 859
 860 out:
 861         validate_fini(&op, fence);
 862         nouveau_fence_unref(&fence);
 863
 864 out_prevalid:
 865         u_free(bo);
 866         u_free(push);
 867
 868 out_next:
 869         if (chan->dma.ib_max) {
 870                 req->suffix0 = 0x00000000;
 871                 req->suffix1 = 0x00000000;
 872         } else
 873         if (nv_device(drm->device)->chipset >= 0x25) {
 874                 req->suffix0 = 0x00020000;
 875                 req->suffix1 = 0x00000000;
 876         } else {
 877                 req->suffix0 = 0x20000000 |
 878                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 879                 req->suffix1 = 0x00000000;
 880         }
 881
 882         return nouveau_abi16_put(abi16, ret);
 883 }
 884
 885 static inline uint32_t
 886 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 887 {
 888         uint32_t flags = 0;
 889
 890         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 891                 flags |= TTM_PL_FLAG_VRAM;
 892         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 893                 flags |= TTM_PL_FLAG_TT;
 894
 895         return flags;
 896 }
 897
 898 int
 899 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 900                            struct drm_file *file_priv)
 901 {
 902         struct drm_nouveau_gem_cpu_prep *req = data;
 903         struct drm_gem_object *gem;
 904         struct nouveau_bo *nvbo;
 905         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 906         int ret = -EINVAL;
 907
 908         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 909         if (!gem)
 910                 return -ENOENT;
 911         nvbo = nouveau_gem_object(gem);
 912
 913         spin_lock(&nvbo->bo.bdev->fence_lock);
 914         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 915         spin_unlock(&nvbo->bo.bdev->fence_lock);
 916         drm_gem_object_unreference_unlocked(gem);
 917         return ret;
 918 }
 919
 920 int
 921 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 922                            struct drm_file *file_priv)
 923 {
 924         return 0;
 925 }
 926
 927 int
 928 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 929                        struct drm_file *file_priv)
 930 {
 931         struct drm_nouveau_gem_info *req = data;
 932         struct drm_gem_object *gem;
 933         int ret;
 934
 935         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 936         if (!gem)
 937                 return -ENOENT;
 938
 939         ret = nouveau_gem_info(file_priv, gem, req);
 940         drm_gem_object_unreference_unlocked(gem);
 941         return ret;
 942 }
 943