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                 if (unlikely(nvbo->validate_mapped)) {
 247                         ttm_bo_kunmap(&nvbo->kmap);
 248                         nvbo->validate_mapped = false;
 249                 }
 250
 251                 list_del(&nvbo->entry);
 252                 nvbo->reserved_by = NULL;
 253                 ttm_bo_unreserve(&nvbo->bo);
 254                 drm_gem_object_unreference(nvbo->gem);
 255         }
 256 }
 257
 258 static void
 259 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 260 {
 261         validate_fini_list(&op->vram_list, fence);
 262         validate_fini_list(&op->gart_list, fence);
 263         validate_fini_list(&op->both_list, fence);
 264 }
 265
 266 static int
 267 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 268               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 269               int nr_buffers, struct validate_op *op)
 270 {
 271         struct drm_device *dev = chan->dev;
 272         struct drm_nouveau_private *dev_priv = dev->dev_private;
 273         uint32_t sequence;
 274         int trycnt = 0;
 275         int ret, i;
 276
 277         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
 278 retry:
 279         if (++trycnt > 100000) {
 280                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
 281                 return -EINVAL;
 282         }
 283
 284         for (i = 0; i < nr_buffers; i++) {
 285                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 286                 struct drm_gem_object *gem;
 287                 struct nouveau_bo *nvbo;
 288
 289                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 290                 if (!gem) {
 291                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
 292                         validate_fini(op, NULL);
 293                         return -EINVAL;
 294                 }
 295                 nvbo = gem->driver_private;
 296
 297                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 298                         NV_ERROR(dev, "multiple instances of buffer %d on "
 299                                       "validation list\n", b->handle);
 300                         validate_fini(op, NULL);
 301                         return -EINVAL;
 302                 }
 303
 304                 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
 305                 if (ret) {
 306                         validate_fini(op, NULL);
 307                         if (ret == -EAGAIN)
 308                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
 309                         drm_gem_object_unreference(gem);
 310                         if (ret) {
 311                                 NV_ERROR(dev, "fail reserve\n");
 312                                 return ret;
 313                         }
 314                         goto retry;
 315                 }
 316
 317                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 318                 nvbo->reserved_by = file_priv;
 319                 nvbo->pbbo_index = i;
 320                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 321                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 322                         list_add_tail(&nvbo->entry, &op->both_list);
 323                 else
 324                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 325                         list_add_tail(&nvbo->entry, &op->vram_list);
 326                 else
 327                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 328                         list_add_tail(&nvbo->entry, &op->gart_list);
 329                 else {
 330                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
 331                                  b->valid_domains);
 332                         list_add_tail(&nvbo->entry, &op->both_list);
 333                         validate_fini(op, NULL);
 334                         return -EINVAL;
 335                 }
 336
 337                 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
 338                         validate_fini(op, NULL);
 339
 340                         if (nvbo->cpu_filp == file_priv) {
 341                                 NV_ERROR(dev, "bo %p mapped by process trying "
 342                                               "to validate it!\n", nvbo);
 343                                 return -EINVAL;
 344                         }
 345
 346                         ret = ttm_bo_wait_cpu(&nvbo->bo, false);
 347                         if (ret) {
 348                                 NV_ERROR(dev, "fail wait_cpu\n");
 349                                 return ret;
 350                         }
 351                         goto retry;
 352                 }
 353         }
 354
 355         return 0;
 356 }
 357
 358 static int
 359 validate_list(struct nouveau_channel *chan, struct list_head *list,
 360               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 361 {
 362         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 363                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 364         struct drm_device *dev = chan->dev;
 365         struct nouveau_bo *nvbo;
 366         int ret, relocs = 0;
 367
 368         list_for_each_entry(nvbo, list, entry) {
 369                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 370                 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
 371
 372                 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
 373                         spin_lock(&nvbo->bo.lock);
 374                         ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 375                         spin_unlock(&nvbo->bo.lock);
 376                         if (unlikely(ret)) {
 377                                 NV_ERROR(dev, "fail wait other chan\n");
 378                                 return ret;
 379                         }
 380                 }
 381
 382                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 383                                              b->write_domains,
 384                                              b->valid_domains);
 385                 if (unlikely(ret)) {
 386                         NV_ERROR(dev, "fail set_domain\n");
 387                         return ret;
 388                 }
 389
 390                 nvbo->channel = chan;
 391                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
 392                                       false, false);
 393                 nvbo->channel = NULL;
 394                 if (unlikely(ret)) {
 395                         NV_ERROR(dev, "fail ttm_validate\n");
 396                         return ret;
 397                 }
 398
 399                 if (nvbo->bo.offset == b->presumed.offset &&
 400                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 401                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 402                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 403                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 404                         continue;
 405
 406                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 407                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 408                 else
 409                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 410                 b->presumed.offset = nvbo->bo.offset;
 411                 b->presumed.valid = 0;
 412                 relocs++;
 413
 414                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 415                                      &b->presumed, sizeof(b->presumed)))
 416                         return -EFAULT;
 417         }
 418
 419         return relocs;
 420 }
 421
 422 static int
 423 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 424                              struct drm_file *file_priv,
 425                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 426                              uint64_t user_buffers, int nr_buffers,
 427                              struct validate_op *op, int *apply_relocs)
 428 {
 429         struct drm_device *dev = chan->dev;
 430         int ret, relocs = 0;
 431
 432         INIT_LIST_HEAD(&op->vram_list);
 433         INIT_LIST_HEAD(&op->gart_list);
 434         INIT_LIST_HEAD(&op->both_list);
 435
 436         if (nr_buffers == 0)
 437                 return 0;
 438
 439         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 440         if (unlikely(ret)) {
 441                 NV_ERROR(dev, "validate_init\n");
 442                 return ret;
 443         }
 444
 445         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 446         if (unlikely(ret < 0)) {
 447                 NV_ERROR(dev, "validate vram_list\n");
 448                 validate_fini(op, NULL);
 449                 return ret;
 450         }
 451         relocs += ret;
 452
 453         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 454         if (unlikely(ret < 0)) {
 455                 NV_ERROR(dev, "validate gart_list\n");
 456                 validate_fini(op, NULL);
 457                 return ret;
 458         }
 459         relocs += ret;
 460
 461         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 462         if (unlikely(ret < 0)) {
 463                 NV_ERROR(dev, "validate both_list\n");
 464                 validate_fini(op, NULL);
 465                 return ret;
 466         }
 467         relocs += ret;
 468
 469         *apply_relocs = relocs;
 470         return 0;
 471 }
 472
 473 static inline void *
 474 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 475 {
 476         void *mem;
 477         void __user *userptr = (void __force __user *)(uintptr_t)user;
 478
 479         mem = kmalloc(nmemb * size, GFP_KERNEL);
 480         if (!mem)
 481                 return ERR_PTR(-ENOMEM);
 482
 483         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 484                 kfree(mem);
 485                 return ERR_PTR(-EFAULT);
 486         }
 487
 488         return mem;
 489 }
 490
 491 static int
 492 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 493                                 struct drm_nouveau_gem_pushbuf *req,
 494                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 495 {
 496         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 497         int ret = 0;
 498         unsigned i;
 499
 500         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 501         if (IS_ERR(reloc))
 502                 return PTR_ERR(reloc);
 503
 504         for (i = 0; i < req->nr_relocs; i++) {
 505                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 506                 struct drm_nouveau_gem_pushbuf_bo *b;
 507                 struct nouveau_bo *nvbo;
 508                 uint32_t data;
 509
 510                 if (unlikely(r->bo_index > req->nr_buffers)) {
 511                         NV_ERROR(dev, "reloc bo index invalid\n");
 512                         ret = -EINVAL;
 513                         break;
 514                 }
 515
 516                 b = &bo[r->bo_index];
 517                 if (b->presumed.valid)
 518                         continue;
 519
 520                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 521                         NV_ERROR(dev, "reloc container bo index invalid\n");
 522                         ret = -EINVAL;
 523                         break;
 524                 }
 525                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 526
 527                 if (unlikely(r->reloc_bo_offset + 4 >
 528                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 529                         NV_ERROR(dev, "reloc outside of bo\n");
 530                         ret = -EINVAL;
 531                         break;
 532                 }
 533
 534                 if (!nvbo->kmap.virtual) {
 535                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 536                                           &nvbo->kmap);
 537                         if (ret) {
 538                                 NV_ERROR(dev, "failed kmap for reloc\n");
 539                                 break;
 540                         }
 541                         nvbo->validate_mapped = true;
 542                 }
 543
 544                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 545                         data = b->presumed.offset + r->data;
 546                 else
 547                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 548                         data = (b->presumed.offset + r->data) >> 32;
 549                 else
 550                         data = r->data;
 551
 552                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 553                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 554                                 data |= r->tor;
 555                         else
 556                                 data |= r->vor;
 557                 }
 558
 559                 spin_lock(&nvbo->bo.lock);
 560                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 561                 if (ret) {
 562                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
 563                         break;
 564                 }
 565                 spin_unlock(&nvbo->bo.lock);
 566
 567                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 568         }
 569
 570         kfree(reloc);
 571         return ret;
 572 }
 573
 574 int
 575 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 576                           struct drm_file *file_priv)
 577 {
 578         struct drm_nouveau_private *dev_priv = dev->dev_private;
 579         struct drm_nouveau_gem_pushbuf *req = data;
 580         struct drm_nouveau_gem_pushbuf_push *push;
 581         struct drm_nouveau_gem_pushbuf_bo *bo;
 582         struct nouveau_channel *chan;
 583         struct validate_op op;
 584         struct nouveau_fence *fence = 0;
 585         int i, j, ret = 0, do_reloc = 0;
 586
 587         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 588         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
 589
 590         req->vram_available = dev_priv->fb_aper_free;
 591         req->gart_available = dev_priv->gart_info.aper_free;
 592         if (unlikely(req->nr_push == 0))
 593                 goto out_next;
 594
 595         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 596                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
 597                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 598                 return -EINVAL;
 599         }
 600
 601         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 602                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
 603                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 604                 return -EINVAL;
 605         }
 606
 607         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 608                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
 609                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 610                 return -EINVAL;
 611         }
 612
 613         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 614         if (IS_ERR(push))
 615                 return PTR_ERR(push);
 616
 617         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 618         if (IS_ERR(bo)) {
 619                 kfree(push);
 620                 return PTR_ERR(bo);
 621         }
 622
 623         mutex_lock(&dev->struct_mutex);
 624
 625         /* Validate buffer list */
 626         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 627                                            req->nr_buffers, &op, &do_reloc);
 628         if (ret) {
 629                 NV_ERROR(dev, "validate: %d\n", ret);
 630                 goto out;
 631         }
 632
 633         /* Apply any relocations that are required */
 634         if (do_reloc) {
 635                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 636                 if (ret) {
 637                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 638                         goto out;
 639                 }
 640         }
 641
 642         if (chan->dma.ib_max) {
 643                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
 644                 if (ret) {
 645                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
 646                         goto out;
 647                 }
 648
 649                 for (i = 0; i < req->nr_push; i++) {
 650                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 651                                 bo[push[i].bo_index].user_priv;
 652
 653                         nv50_dma_push(chan, nvbo, push[i].offset,
 654                                       push[i].length);
 655                 }
 656         } else
 657         if (dev_priv->card_type >= NV_20) {
 658                 ret = RING_SPACE(chan, req->nr_push * 2);
 659                 if (ret) {
 660                         NV_ERROR(dev, "cal_space: %d\n", ret);
 661                         goto out;
 662                 }
 663
 664                 for (i = 0; i < req->nr_push; i++) {
 665                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 666                                 bo[push[i].bo_index].user_priv;
 667                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 668
 669                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 670                                         push[i].offset) | 2);
 671                         OUT_RING(chan, 0);
 672                 }
 673         } else {
 674                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 675                 if (ret) {
 676                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 677                         goto out;
 678                 }
 679
 680                 for (i = 0; i < req->nr_push; i++) {
 681                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 682                                 bo[push[i].bo_index].user_priv;
 683                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
 684                         uint32_t cmd;
 685
 686                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 687                         cmd |= 0x20000000;
 688                         if (unlikely(cmd != req->suffix0)) {
 689                                 if (!nvbo->kmap.virtual) {
 690                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 691                                                           nvbo->bo.mem.
 692                                                           num_pages,
 693                                                           &nvbo->kmap);
 694                                         if (ret) {
 695                                                 WIND_RING(chan);
 696                                                 goto out;
 697                                         }
 698                                         nvbo->validate_mapped = true;
 699                                 }
 700
 701                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 702                                                 push[i].length - 8) / 4, cmd);
 703                         }
 704
 705                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
 706                                         push[i].offset) | 0x20000000);
 707                         OUT_RING(chan, 0);
 708                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 709                                 OUT_RING(chan, 0);
 710                 }
 711         }
 712
 713         ret = nouveau_fence_new(chan, &fence, true);
 714         if (ret) {
 715                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 716                 WIND_RING(chan);
 717                 goto out;
 718         }
 719
 720 out:
 721         validate_fini(&op, fence);
 722         nouveau_fence_unref((void**)&fence);
 723         mutex_unlock(&dev->struct_mutex);
 724         kfree(bo);
 725         kfree(push);
 726
 727 out_next:
 728         if (chan->dma.ib_max) {
 729                 req->suffix0 = 0x00000000;
 730                 req->suffix1 = 0x00000000;
 731         } else
 732         if (dev_priv->card_type >= NV_20) {
 733                 req->suffix0 = 0x00020000;
 734                 req->suffix1 = 0x00000000;
 735         } else {
 736                 req->suffix0 = 0x20000000 |
 737                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 738                 req->suffix1 = 0x00000000;
 739         }
 740
 741         return ret;
 742 }
 743
 744 static inline uint32_t
 745 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 746 {
 747         uint32_t flags = 0;
 748
 749         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 750                 flags |= TTM_PL_FLAG_VRAM;
 751         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 752                 flags |= TTM_PL_FLAG_TT;
 753
 754         return flags;
 755 }
 756
 757 int
 758 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 759                            struct drm_file *file_priv)
 760 {
 761         struct drm_nouveau_gem_cpu_prep *req = data;
 762         struct drm_gem_object *gem;
 763         struct nouveau_bo *nvbo;
 764         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 765         int ret = -EINVAL;
 766
 767         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 768
 769         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 770         if (!gem)
 771                 return ret;
 772         nvbo = nouveau_gem_object(gem);
 773
 774         if (nvbo->cpu_filp) {
 775                 if (nvbo->cpu_filp == file_priv)
 776                         goto out;
 777
 778                 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
 779                 if (ret)
 780                         goto out;
 781         }
 782
 783         if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
 784                 spin_lock(&nvbo->bo.lock);
 785                 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
 786                 spin_unlock(&nvbo->bo.lock);
 787         } else {
 788                 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
 789                 if (ret == 0)
 790                         nvbo->cpu_filp = file_priv;
 791         }
 792
 793 out:
 794         mutex_lock(&dev->struct_mutex);
 795         drm_gem_object_unreference(gem);
 796         mutex_unlock(&dev->struct_mutex);
 797         return ret;
 798 }
 799
 800 int
 801 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 802                            struct drm_file *file_priv)
 803 {
 804         struct drm_nouveau_gem_cpu_prep *req = data;
 805         struct drm_gem_object *gem;
 806         struct nouveau_bo *nvbo;
 807         int ret = -EINVAL;
 808
 809         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 810
 811         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 812         if (!gem)
 813                 return ret;
 814         nvbo = nouveau_gem_object(gem);
 815
 816         if (nvbo->cpu_filp != file_priv)
 817                 goto out;
 818         nvbo->cpu_filp = NULL;
 819
 820         ttm_bo_synccpu_write_release(&nvbo->bo);
 821         ret = 0;
 822
 823 out:
 824         mutex_lock(&dev->struct_mutex);
 825         drm_gem_object_unreference(gem);
 826         mutex_unlock(&dev->struct_mutex);
 827         return ret;
 828 }
 829
 830 int
 831 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 832                        struct drm_file *file_priv)
 833 {
 834         struct drm_nouveau_gem_info *req = data;
 835         struct drm_gem_object *gem;
 836         int ret;
 837
 838         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 839
 840         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 841         if (!gem)
 842                 return -EINVAL;
 843
 844         ret = nouveau_gem_info(gem, req);
 845         mutex_lock(&dev->struct_mutex);
 846         drm_gem_object_unreference(gem);
 847         mutex_unlock(&dev->struct_mutex);
 848         return ret;
 849 }
 850