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 #include "drmP.h"
  27 #include "drm.h"
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_drm.h"
  31 #include "nouveau_dma.h"
  32
  33 #define nouveau_gem_pushbuf_sync(chan) 0
  34
  35 int
  36 nouveau_gem_object_new(struct drm_gem_object *gem)
  37 {
  38         return 0;
  39 }
  40
  41 void
  42 nouveau_gem_object_del(struct drm_gem_object *gem)
  43 {
  44         struct nouveau_bo *nvbo = gem->driver_private;
  45         struct ttm_buffer_object *bo = &nvbo->bo;
  46
  47         if (!nvbo)
  48                 return;
  49         nvbo->gem = NULL;
  50
  51         if (unlikely(nvbo->cpu_filp))
  52                 ttm_bo_synccpu_write_release(bo);
  53
  54         if (unlikely(nvbo->pin_refcnt)) {
  55                 nvbo->pin_refcnt = 1;
  56                 nouveau_bo_unpin(nvbo);
  57         }
  58
  59         ttm_bo_unref(&bo);
  60 }
  61
  62 int
  63 nouveau_gem_new(struct drm_device *dev, struct nouveau_channel *chan,
  64                 int size, int align, uint32_t flags, uint32_t tile_mode,
  65                 uint32_t tile_flags, bool no_vm, bool mappable,
  66                 struct nouveau_bo **pnvbo)
  67 {
  68         struct nouveau_bo *nvbo;
  69         int ret;
  70
  71         ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
  72                              tile_flags, no_vm, mappable, pnvbo);
  73         if (ret)
  74                 return ret;
  75         nvbo = *pnvbo;
  76
  77         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
  78         if (!nvbo->gem) {
  79                 nouveau_bo_ref(NULL, pnvbo);
  80                 return -ENOMEM;
  81         }
  82
  83         nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
  84         nvbo->gem->driver_private = nvbo;
  85         return 0;
  86 }
  87
  88 static int
  89 nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
  90 {
  91         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  92
  93         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
  94                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
  95         else
  96                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
  97
  98         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
  99         rep->offset = nvbo->bo.offset;
 100         rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0;
 101         rep->tile_mode = nvbo->tile_mode;
 102         rep->tile_flags = nvbo->tile_flags;
 103         return 0;
 104 }
 105
 106 static bool
 107 nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
 108         switch (tile_flags) {
 109         case 0x0000:
 110         case 0x1800:
 111         case 0x2800:
 112         case 0x4800:
 113         case 0x7000:
 114         case 0x7400:
 115         case 0x7a00:
 116         case 0xe000:
 117                 break;
 118         default:
 119                 NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
 120                 return false;
 121         }
 122
 123         return true;
 124 }
 125
 126 int
 127 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 128                       struct drm_file *file_priv)
 129 {
 130         struct drm_nouveau_private *dev_priv = dev->dev_private;
 131         struct drm_nouveau_gem_new *req = data;
 132         struct nouveau_bo *nvbo = NULL;
 133         struct nouveau_channel *chan = NULL;
 134         uint32_t flags = 0;
 135         int ret = 0;
 136
 137         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 138
 139         if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
 140                 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
 141
 142         if (req->channel_hint) {
 143                 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
 144                                                      file_priv, chan);
 145         }
 146
 147         if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM)
 148                 flags |= TTM_PL_FLAG_VRAM;
 149         if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART)
 150                 flags |= TTM_PL_FLAG_TT;
 151         if (!flags || req->info.domain & NOUVEAU_GEM_DOMAIN_CPU)
 152                 flags |= TTM_PL_FLAG_SYSTEM;
 153
 154         if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags))
 155                 return -EINVAL;
 156
 157         ret = nouveau_gem_new(dev, chan, req->info.size, req->align, flags,
 158                               req->info.tile_mode, req->info.tile_flags, false,
 159                               (req->info.domain & NOUVEAU_GEM_DOMAIN_MAPPABLE),
 160                               &nvbo);
 161         if (ret)
 162                 return ret;
 163
 164         ret = nouveau_gem_info(nvbo->gem, &req->info);
 165         if (ret)
 166                 goto out;
 167
 168         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 169 out:
 170         mutex_lock(&dev->struct_mutex);
 171         drm_gem_object_handle_unreference(nvbo->gem);
 172         mutex_unlock(&dev->struct_mutex);
 173
 174         if (ret)
 175                 drm_gem_object_unreference(nvbo->gem);
 176         return ret;
 177 }
 178
 179 static int
 180 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 181                        uint32_t write_domains, uint32_t valid_domains)
 182 {
 183         struct nouveau_bo *nvbo = gem->driver_private;
 184         struct ttm_buffer_object *bo = &nvbo->bo;
 185         uint64_t flags;
 186
 187         if (!valid_domains || (!read_domains && !write_domains))
 188                 return -EINVAL;
 189
 190         if (write_domains) {
 191                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 192                     (write_domains & NOUVEAU_GEM_DOMAIN_VRAM))
 193                         flags = TTM_PL_FLAG_VRAM;
 194                 else
 195                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
 196                     (write_domains & NOUVEAU_GEM_DOMAIN_GART))
 197                         flags = TTM_PL_FLAG_TT;
 198                 else
 199                         return -EINVAL;
 200         } else {
 201                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 202                     (read_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 203                     bo->mem.mem_type == TTM_PL_VRAM)
 204                         flags = TTM_PL_FLAG_VRAM;
 205                 else
 206                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
 207                     (read_domains & NOUVEAU_GEM_DOMAIN_GART) &&
 208                     bo->mem.mem_type == TTM_PL_TT)
 209                         flags = TTM_PL_FLAG_TT;
 210                 else
 211                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 212                     (read_domains & NOUVEAU_GEM_DOMAIN_VRAM))
 213                         flags = TTM_PL_FLAG_VRAM;
 214                 else
 215                         flags = TTM_PL_FLAG_TT;
 216         }
 217
 218         nouveau_bo_placement_set(nvbo, flags);
 219         return 0;
 220 }
 221
 222 struct validate_op {
 223         struct list_head vram_list;
 224         struct list_head gart_list;
 225         struct list_head both_list;
 226 };
 227
 228 static void
 229 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 230 {
 231         struct list_head *entry, *tmp;
 232         struct nouveau_bo *nvbo;
 233
 234         list_for_each_safe(entry, tmp, list) {
 235                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 236                 if (likely(fence)) {
 237                         struct nouveau_fence *prev_fence;
 238
 239                         spin_lock(&nvbo->bo.lock);
 240                         prev_fence = nvbo->bo.sync_obj;
 241                         nvbo->bo.sync_obj = nouveau_fence_ref(fence);
 242                         spin_unlock(&nvbo->bo.lock);
 243                         nouveau_fence_unref((void *)&prev_fence);
 244                 }
 245
 246                 list_del(&nvbo->entry);
 247                 nvbo->reserved_by = NULL;
 248                 ttm_bo_unreserve(&nvbo->bo);
 249                 drm_gem_object_unreference(nvbo->gem);
 250         }
 251 }
 252
 253 static void
 254 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 255 {
 256         validate_fini_list(&op->vram_list, fence);
 257         validate_fini_list(&op->gart_list, fence);
 258         validate_fini_list(&op->both_list, fence);
 259 }
 260
 261 static int
 262 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 263               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 264               int nr_buffers, struct validate_op *op)
 265 {
 266         struct drm_device *dev = chan->dev;
 267         struct drm_nouveau_private *dev_priv = dev->dev_private;
 268         uint32_t sequence;
 269         int trycnt = 0;
 270         int ret, i;
 271
 272         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 273 retry:
 274         if (++trycnt > 100000) {
 275                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 276                 return -EINVAL;
 277         }
 278
 279         for (i = 0; i < nr_buffers; i++) {
 280                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 281                 struct drm_gem_object *gem;
 282                 struct nouveau_bo *nvbo;
 283
 284                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 285                 if (!gem) {
 286                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 287                         validate_fini(op, NULL);
 288                         return -EINVAL;
 289                 }
 290                 nvbo = gem->driver_private;
 291
 292                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 293                         NV_ERROR(dev, "multiple instances of buffer %d on "
 294                                       "validation list\n", b->handle);
 295                         validate_fini(op, NULL);
 296                         return -EINVAL;
 297                 }
 298
 299                 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
 300                 if (ret) {
 301                         validate_fini(op, NULL);
 302                         if (ret == -EAGAIN)
 303                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
 304                         drm_gem_object_unreference(gem);
 305                         if (ret)
 306                                 return ret;
 307                         goto retry;
 308                 }
 309
 310                 nvbo->reserved_by = file_priv;
 311                 nvbo->pbbo_index = i;
 312                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 313                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 314                         list_add_tail(&nvbo->entry, &op->both_list);
 315                 else
 316                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 317                         list_add_tail(&nvbo->entry, &op->vram_list);
 318                 else
 319                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 320                         list_add_tail(&nvbo->entry, &op->gart_list);
 321                 else {
 322                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 323                                  b->valid_domains);
 324                         validate_fini(op, NULL);
 325                         return -EINVAL;
 326                 }
 327
 328                 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
 329                         validate_fini(op, NULL);
 330
 331                         if (nvbo->cpu_filp == file_priv) {
 332                                 NV_ERROR(dev, "bo %p mapped by process trying "
 333                                               "to validate it!\n", nvbo);
 334                                 return -EINVAL;
 335                         }
 336
 337                         ret = ttm_bo_wait_cpu(&nvbo->bo, false);
 338                         if (ret)
 339                                 return ret;
 340                         goto retry;
 341                 }
 342         }
 343
 344         return 0;
 345 }
 346
 347 static int
 348 validate_list(struct nouveau_channel *chan, struct list_head *list,
 349               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 350 {
 351         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 352                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 353         struct nouveau_bo *nvbo;
 354         int ret, relocs = 0;
 355
 356         list_for_each_entry(nvbo, list, entry) {
 357                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 358                 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
 359
 360                 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
 361                         spin_lock(&nvbo->bo.lock);
 362                         ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 363                         spin_unlock(&nvbo->bo.lock);
 364                         if (unlikely(ret))
 365                                 return ret;
 366                 }
 367
 368                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 369                                              b->write_domains,
 370                                              b->valid_domains);
 371                 if (unlikely(ret))
 372                         return ret;
 373
 374                 nvbo->channel = chan;
 375                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
 376                                       false, false);
 377                 nvbo->channel = NULL;
 378                 if (unlikely(ret))
 379                         return ret;
 380
 381                 if (nvbo->bo.offset == b->presumed_offset &&
 382                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 383                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 384                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 385                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART)))
 386                         continue;
 387
 388                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 389                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART;
 390                 else
 391                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM;
 392                 b->presumed_offset = nvbo->bo.offset;
 393                 b->presumed_ok = 0;
 394                 relocs++;
 395
 396                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b)))
 397                         return -EFAULT;
 398         }
 399
 400         return relocs;
 401 }
 402
 403 static int
 404 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 405                              struct drm_file *file_priv,
 406                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 407                              uint64_t user_buffers, int nr_buffers,
 408                              struct validate_op *op, int *apply_relocs)
 409 {
 410         int ret, relocs = 0;
 411
 412         INIT_LIST_HEAD(&op->vram_list);
 413         INIT_LIST_HEAD(&op->gart_list);
 414         INIT_LIST_HEAD(&op->both_list);
 415
 416         if (nr_buffers == 0)
 417                 return 0;
 418
 419         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 420         if (unlikely(ret))
 421                 return ret;
 422
 423         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 424         if (unlikely(ret < 0)) {
 425                 validate_fini(op, NULL);
 426                 return ret;
 427         }
 428         relocs += ret;
 429
 430         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 431         if (unlikely(ret < 0)) {
 432                 validate_fini(op, NULL);
 433                 return ret;
 434         }
 435         relocs += ret;
 436
 437         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 438         if (unlikely(ret < 0)) {
 439                 validate_fini(op, NULL);
 440                 return ret;
 441         }
 442         relocs += ret;
 443
 444         *apply_relocs = relocs;
 445         return 0;
 446 }
 447
 448 static inline void *
 449 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 450 {
 451         void *mem;
 452         void __user *userptr = (void __force __user *)(uintptr_t)user;
 453
 454         mem = kmalloc(nmemb * size, GFP_KERNEL);
 455         if (!mem)
 456                 return ERR_PTR(-ENOMEM);
 457
 458         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 459                 kfree(mem);
 460                 return ERR_PTR(-EFAULT);
 461         }
 462
 463         return mem;
 464 }
 465
 466 static int
 467 nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo,
 468                                 struct drm_nouveau_gem_pushbuf_bo *bo,
 469                                 int nr_relocs, uint64_t ptr_relocs,
 470                                 int nr_dwords, int first_dword,
 471                                 uint32_t *pushbuf, bool is_iomem)
 472 {
 473         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 474         struct drm_device *dev = chan->dev;
 475         int ret = 0, i;
 476
 477         reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc));
 478         if (IS_ERR(reloc))
 479                 return PTR_ERR(reloc);
 480
 481         for (i = 0; i < nr_relocs; i++) {
 482                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 483                 struct drm_nouveau_gem_pushbuf_bo *b;
 484                 uint32_t data;
 485
 486                 if (r->bo_index >= nr_bo || r->reloc_index < first_dword ||
 487                     r->reloc_index >= first_dword + nr_dwords) {
 488                         NV_ERROR(dev, "Bad relocation %d\n", i);
 489                         NV_ERROR(dev, "  bo: %d max %d\n", r->bo_index, nr_bo);
 490                         NV_ERROR(dev, "  id: %d max %d\n", r->reloc_index, nr_dwords);
 491                         ret = -EINVAL;
 492                         break;
 493                 }
 494
 495                 b = &bo[r->bo_index];
 496                 if (b->presumed_ok)
 497                         continue;
 498
 499                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 500                         data = b->presumed_offset + r->data;
 501                 else
 502                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 503                         data = (b->presumed_offset + r->data) >> 32;
 504                 else
 505                         data = r->data;
 506
 507                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 508                         if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART)
 509                                 data |= r->tor;
 510                         else
 511                                 data |= r->vor;
 512                 }
 513
 514                 if (is_iomem)
 515                         iowrite32_native(data, (void __force __iomem *)
 516                                                 &pushbuf[r->reloc_index]);
 517                 else
 518                         pushbuf[r->reloc_index] = data;
 519         }
 520
 521         kfree(reloc);
 522         return ret;
 523 }
 524
 525 int
 526 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 527                           struct drm_file *file_priv)
 528 {
 529         struct drm_nouveau_gem_pushbuf *req = data;
 530         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
 531         struct nouveau_channel *chan;
 532         struct validate_op op;
 533         struct nouveau_fence* fence = 0;
 534         uint32_t *pushbuf = NULL;
 535         int ret = 0, do_reloc = 0, i;
 536
 537         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 538         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
 539
 540         if (req->nr_dwords >= chan->dma.max ||
 541             req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
 542             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
 543                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
 544                 NV_ERROR(dev, "  dwords : %d max %d\n", req->nr_dwords,
 545                          chan->dma.max - 1);
 546                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
 547                          NOUVEAU_GEM_MAX_BUFFERS);
 548                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
 549                          NOUVEAU_GEM_MAX_RELOCS);
 550                 return -EINVAL;
 551         }
 552
 553         pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t));
 554         if (IS_ERR(pushbuf))
 555                 return PTR_ERR(pushbuf);
 556
 557         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 558         if (IS_ERR(bo)) {
 559                 kfree(pushbuf);
 560                 return PTR_ERR(bo);
 561         }
 562
 563         mutex_lock(&dev->struct_mutex);
 564
 565         /* Validate buffer list */
 566         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 567                                            req->nr_buffers, &op, &do_reloc);
 568         if (ret)
 569                 goto out;
 570
 571         /* Apply any relocations that are required */
 572         if (do_reloc) {
 573                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers,
 574                                                       bo, req->nr_relocs,
 575                                                       req->relocs,
 576                                                       req->nr_dwords, 0,
 577                                                       pushbuf, false);
 578                 if (ret)
 579                         goto out;
 580         }
 581
 582         /* Emit push buffer to the hw
 583          */
 584         ret = RING_SPACE(chan, req->nr_dwords);
 585         if (ret)
 586                 goto out;
 587
 588         OUT_RINGp(chan, pushbuf, req->nr_dwords);
 589
 590         ret = nouveau_fence_new(chan, &fence, true);
 591         if (ret) {
 592                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 593                 WIND_RING(chan);
 594                 goto out;
 595         }
 596
 597         if (nouveau_gem_pushbuf_sync(chan)) {
 598                 ret = nouveau_fence_wait(fence, NULL, false, false);
 599                 if (ret) {
 600                         for (i = 0; i < req->nr_dwords; i++)
 601                                 NV_ERROR(dev, "0x%08x\n", pushbuf[i]);
 602                         NV_ERROR(dev, "^^ above push buffer is fail :(\n");
 603                 }
 604         }
 605
 606 out:
 607         validate_fini(&op, fence);
 608         nouveau_fence_unref((void**)&fence);
 609         mutex_unlock(&dev->struct_mutex);
 610         kfree(pushbuf);
 611         kfree(bo);
 612         return ret;
 613 }
 614
 615 #define PUSHBUF_CAL (dev_priv->card_type >= NV_20)
 616
 617 int
 618 nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data,
 619                                struct drm_file *file_priv)
 620 {
 621         struct drm_nouveau_private *dev_priv = dev->dev_private;
 622         struct drm_nouveau_gem_pushbuf_call *req = data;
 623         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
 624         struct nouveau_channel *chan;
 625         struct drm_gem_object *gem;
 626         struct nouveau_bo *pbbo;
 627         struct validate_op op;
 628         struct nouveau_fence* fence = 0;
 629         int i, ret = 0, do_reloc = 0;
 630
 631         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 632         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
 633
 634         if (unlikely(req->handle == 0))
 635                 goto out_next;
 636
 637         if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
 638             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
 639                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
 640                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
 641                          NOUVEAU_GEM_MAX_BUFFERS);
 642                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
 643                          NOUVEAU_GEM_MAX_RELOCS);
 644                 return -EINVAL;
 645         }
 646
 647         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 648         if (IS_ERR(bo))
 649                 return PTR_ERR(bo);
 650
 651         mutex_lock(&dev->struct_mutex);
 652
 653         /* Validate buffer list */
 654         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 655                                            req->nr_buffers, &op, &do_reloc);
 656         if (ret) {
 657                 NV_ERROR(dev, "validate: %d\n", ret);
 658                 goto out;
 659         }
 660
 661         /* Validate DMA push buffer */
 662         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 663         if (!gem) {
 664                 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle);
 665                 ret = -EINVAL;
 666                 goto out;
 667         }
 668         pbbo = nouveau_gem_object(gem);
 669
 670         ret = ttm_bo_reserve(&pbbo->bo, false, false, true,
 671                              chan->fence.sequence);
 672         if (ret) {
 673                 NV_ERROR(dev, "resv pb: %d\n", ret);
 674                 drm_gem_object_unreference(gem);
 675                 goto out;
 676         }
 677
 678         nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type);
 679         ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false);
 680         if (ret) {
 681                 NV_ERROR(dev, "validate pb: %d\n", ret);
 682                 ttm_bo_unreserve(&pbbo->bo);
 683                 drm_gem_object_unreference(gem);
 684                 goto out;
 685         }
 686
 687         list_add_tail(&pbbo->entry, &op.both_list);
 688
 689         /* If presumed return address doesn't match, we need to map the
 690          * push buffer and fix it..
 691          */
 692         if (!PUSHBUF_CAL) {
 693                 uint32_t retaddy;
 694
 695                 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) {
 696                         ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS);
 697                         if (ret) {
 698                                 NV_ERROR(dev, "jmp_space: %d\n", ret);
 699                                 goto out;
 700                         }
 701                 }
 702
 703                 retaddy  = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 704                 retaddy |= 0x20000000;
 705                 if (retaddy != req->suffix0) {
 706                         req->suffix0 = retaddy;
 707                         do_reloc = 1;
 708                 }
 709         }
 710
 711         /* Apply any relocations that are required */
 712         if (do_reloc) {
 713                 void *pbvirt;
 714                 bool is_iomem;
 715                 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages,
 716                                   &pbbo->kmap);
 717                 if (ret) {
 718                         NV_ERROR(dev, "kmap pb: %d\n", ret);
 719                         goto out;
 720                 }
 721
 722                 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem);
 723                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo,
 724                                                       req->nr_relocs,
 725                                                       req->relocs,
 726                                                       req->nr_dwords,
 727                                                       req->offset / 4,
 728                                                       pbvirt, is_iomem);
 729
 730                 if (!PUSHBUF_CAL) {
 731                         nouveau_bo_wr32(pbbo,
 732                                         req->offset / 4 + req->nr_dwords - 2,
 733                                         req->suffix0);
 734                 }
 735
 736                 ttm_bo_kunmap(&pbbo->kmap);
 737                 if (ret) {
 738                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 739                         goto out;
 740                 }
 741         }
 742
 743         if (PUSHBUF_CAL) {
 744                 ret = RING_SPACE(chan, 2);
 745                 if (ret) {
 746                         NV_ERROR(dev, "cal_space: %d\n", ret);
 747                         goto out;
 748                 }
 749                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
 750                                   req->offset) | 2);
 751                 OUT_RING(chan, 0);
 752         } else {
 753                 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS);
 754                 if (ret) {
 755                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 756                         goto out;
 757                 }
 758                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
 759                                   req->offset) | 0x20000000);
 760                 OUT_RING(chan, 0);
 761
 762                 /* Space the jumps apart with NOPs. */
 763                 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
 764                         OUT_RING(chan, 0);
 765         }
 766
 767         ret = nouveau_fence_new(chan, &fence, true);
 768         if (ret) {
 769                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 770                 WIND_RING(chan);
 771                 goto out;
 772         }
 773
 774 out:
 775         validate_fini(&op, fence);
 776         nouveau_fence_unref((void**)&fence);
 777         mutex_unlock(&dev->struct_mutex);
 778         kfree(bo);
 779
 780 out_next:
 781         if (PUSHBUF_CAL) {
 782                 req->suffix0 = 0x00020000;
 783                 req->suffix1 = 0x00000000;
 784         } else {
 785                 req->suffix0 = 0x20000000 |
 786                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 787                 req->suffix1 = 0x00000000;
 788         }
 789
 790         return ret;
 791 }
 792
 793 int
 794 nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data,
 795                                 struct drm_file *file_priv)
 796 {
 797         struct drm_nouveau_private *dev_priv = dev->dev_private;
 798         struct drm_nouveau_gem_pushbuf_call *req = data;
 799
 800         req->vram_available = dev_priv->fb_aper_free;
 801         req->gart_available = dev_priv->gart_info.aper_free;
 802
 803         return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv);
 804 }
 805
 806 static inline uint32_t
 807 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 808 {
 809         uint32_t flags = 0;
 810
 811         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 812                 flags |= TTM_PL_FLAG_VRAM;
 813         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 814                 flags |= TTM_PL_FLAG_TT;
 815
 816         return flags;
 817 }
 818
 819 int
 820 nouveau_gem_ioctl_pin(struct drm_device *dev, void *data,
 821                       struct drm_file *file_priv)
 822 {
 823         struct drm_nouveau_gem_pin *req = data;
 824         struct drm_gem_object *gem;
 825         struct nouveau_bo *nvbo;
 826         int ret = 0;
 827
 828         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 829
 830         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 831                 NV_ERROR(dev, "pin only allowed without kernel modesetting\n");
 832                 return -EINVAL;
 833         }
 834
 835         if (!DRM_SUSER(DRM_CURPROC))
 836                 return -EPERM;
 837
 838         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 839         if (!gem)
 840                 return -EINVAL;
 841         nvbo = nouveau_gem_object(gem);
 842
 843         ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain));
 844         if (ret)
 845                 goto out;
 846
 847         req->offset = nvbo->bo.offset;
 848         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 849                 req->domain = NOUVEAU_GEM_DOMAIN_GART;
 850         else
 851                 req->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 852
 853 out:
 854         mutex_lock(&dev->struct_mutex);
 855         drm_gem_object_unreference(gem);
 856         mutex_unlock(&dev->struct_mutex);
 857
 858         return ret;
 859 }
 860
 861 int
 862 nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data,
 863                         struct drm_file *file_priv)
 864 {
 865         struct drm_nouveau_gem_pin *req = data;
 866         struct drm_gem_object *gem;
 867         int ret;
 868
 869         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 870
 871         if (drm_core_check_feature(dev, DRIVER_MODESET))
 872                 return -EINVAL;
 873
 874         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 875         if (!gem)
 876                 return -EINVAL;
 877
 878         ret = nouveau_bo_unpin(nouveau_gem_object(gem));
 879
 880         mutex_lock(&dev->struct_mutex);
 881         drm_gem_object_unreference(gem);
 882         mutex_unlock(&dev->struct_mutex);
 883
 884         return ret;
 885 }
 886
 887 int
 888 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 889                            struct drm_file *file_priv)
 890 {
 891         struct drm_nouveau_gem_cpu_prep *req = data;
 892         struct drm_gem_object *gem;
 893         struct nouveau_bo *nvbo;
 894         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 895         int ret = -EINVAL;
 896
 897         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 898
 899         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 900         if (!gem)
 901                 return ret;
 902         nvbo = nouveau_gem_object(gem);
 903
 904         if (nvbo->cpu_filp) {
 905                 if (nvbo->cpu_filp == file_priv)
 906                         goto out;
 907
 908                 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
 909                 if (ret)
 910                         goto out;
 911         }
 912
 913         if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
 914                 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
 915         } else {
 916                 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
 917                 if (ret == 0)
 918                         nvbo->cpu_filp = file_priv;
 919         }
 920
 921 out:
 922         mutex_lock(&dev->struct_mutex);
 923         drm_gem_object_unreference(gem);
 924         mutex_unlock(&dev->struct_mutex);
 925         return ret;
 926 }
 927
 928 int
 929 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 930                            struct drm_file *file_priv)
 931 {
 932         struct drm_nouveau_gem_cpu_prep *req = data;
 933         struct drm_gem_object *gem;
 934         struct nouveau_bo *nvbo;
 935         int ret = -EINVAL;
 936
 937         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 938
 939         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 940         if (!gem)
 941                 return ret;
 942         nvbo = nouveau_gem_object(gem);
 943
 944         if (nvbo->cpu_filp != file_priv)
 945                 goto out;
 946         nvbo->cpu_filp = NULL;
 947
 948         ttm_bo_synccpu_write_release(&nvbo->bo);
 949         ret = 0;
 950
 951 out:
 952         mutex_lock(&dev->struct_mutex);
 953         drm_gem_object_unreference(gem);
 954         mutex_unlock(&dev->struct_mutex);
 955         return ret;
 956 }
 957
 958 int
 959 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 960                        struct drm_file *file_priv)
 961 {
 962         struct drm_nouveau_gem_info *req = data;
 963         struct drm_gem_object *gem;
 964         int ret;
 965
 966         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 967
 968         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 969         if (!gem)
 970                 return -EINVAL;
 971
 972         ret = nouveau_gem_info(gem, req);
 973         mutex_lock(&dev->struct_mutex);
 974         drm_gem_object_unreference(gem);
 975         mutex_unlock(&dev->struct_mutex);
 976         return ret;
 977 }
 978