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                         list_add_tail(&nvbo->entry, &op->both_list);
 325                         validate_fini(op, NULL);
 326                         return -EINVAL;
 327                 }
 328
 329                 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
 330                         validate_fini(op, NULL);
 331
 332                         if (nvbo->cpu_filp == file_priv) {
 333                                 NV_ERROR(dev, "bo %p mapped by process trying "
 334                                               "to validate it!\n", nvbo);
 335                                 return -EINVAL;
 336                         }
 337
 338                         ret = ttm_bo_wait_cpu(&nvbo->bo, false);
 339                         if (ret)
 340                                 return ret;
 341                         goto retry;
 342                 }
 343         }
 344
 345         return 0;
 346 }
 347
 348 static int
 349 validate_list(struct nouveau_channel *chan, struct list_head *list,
 350               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 351 {
 352         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 353                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 354         struct nouveau_bo *nvbo;
 355         int ret, relocs = 0;
 356
 357         list_for_each_entry(nvbo, list, entry) {
 358                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 359                 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
 360
 361                 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
 362                         spin_lock(&nvbo->bo.lock);
 363                         ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 364                         spin_unlock(&nvbo->bo.lock);
 365                         if (unlikely(ret))
 366                                 return ret;
 367                 }
 368
 369                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 370                                              b->write_domains,
 371                                              b->valid_domains);
 372                 if (unlikely(ret))
 373                         return ret;
 374
 375                 nvbo->channel = chan;
 376                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
 377                                       false, false);
 378                 nvbo->channel = NULL;
 379                 if (unlikely(ret))
 380                         return ret;
 381
 382                 if (nvbo->bo.offset == b->presumed_offset &&
 383                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 384                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 385                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 386                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART)))
 387                         continue;
 388
 389                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 390                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART;
 391                 else
 392                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM;
 393                 b->presumed_offset = nvbo->bo.offset;
 394                 b->presumed_ok = 0;
 395                 relocs++;
 396
 397                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b)))
 398                         return -EFAULT;
 399         }
 400
 401         return relocs;
 402 }
 403
 404 static int
 405 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 406                              struct drm_file *file_priv,
 407                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 408                              uint64_t user_buffers, int nr_buffers,
 409                              struct validate_op *op, int *apply_relocs)
 410 {
 411         int ret, relocs = 0;
 412
 413         INIT_LIST_HEAD(&op->vram_list);
 414         INIT_LIST_HEAD(&op->gart_list);
 415         INIT_LIST_HEAD(&op->both_list);
 416
 417         if (nr_buffers == 0)
 418                 return 0;
 419
 420         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 421         if (unlikely(ret))
 422                 return ret;
 423
 424         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 425         if (unlikely(ret < 0)) {
 426                 validate_fini(op, NULL);
 427                 return ret;
 428         }
 429         relocs += ret;
 430
 431         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 432         if (unlikely(ret < 0)) {
 433                 validate_fini(op, NULL);
 434                 return ret;
 435         }
 436         relocs += ret;
 437
 438         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 439         if (unlikely(ret < 0)) {
 440                 validate_fini(op, NULL);
 441                 return ret;
 442         }
 443         relocs += ret;
 444
 445         *apply_relocs = relocs;
 446         return 0;
 447 }
 448
 449 static inline void *
 450 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 451 {
 452         void *mem;
 453         void __user *userptr = (void __force __user *)(uintptr_t)user;
 454
 455         mem = kmalloc(nmemb * size, GFP_KERNEL);
 456         if (!mem)
 457                 return ERR_PTR(-ENOMEM);
 458
 459         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 460                 kfree(mem);
 461                 return ERR_PTR(-EFAULT);
 462         }
 463
 464         return mem;
 465 }
 466
 467 static int
 468 nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo,
 469                                 struct drm_nouveau_gem_pushbuf_bo *bo,
 470                                 unsigned nr_relocs, uint64_t ptr_relocs,
 471                                 unsigned nr_dwords, unsigned first_dword,
 472                                 uint32_t *pushbuf, bool is_iomem)
 473 {
 474         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 475         struct drm_device *dev = chan->dev;
 476         int ret = 0;
 477         unsigned i;
 478
 479         reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc));
 480         if (IS_ERR(reloc))
 481                 return PTR_ERR(reloc);
 482
 483         for (i = 0; i < nr_relocs; i++) {
 484                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 485                 struct drm_nouveau_gem_pushbuf_bo *b;
 486                 uint32_t data;
 487
 488                 if (r->bo_index >= nr_bo || r->reloc_index < first_dword ||
 489                     r->reloc_index >= first_dword + nr_dwords) {
 490                         NV_ERROR(dev, "Bad relocation %d\n", i);
 491                         NV_ERROR(dev, "  bo: %d max %d\n", r->bo_index, nr_bo);
 492                         NV_ERROR(dev, "  id: %d max %d\n", r->reloc_index, nr_dwords);
 493                         ret = -EINVAL;
 494                         break;
 495                 }
 496
 497                 b = &bo[r->bo_index];
 498                 if (b->presumed_ok)
 499                         continue;
 500
 501                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 502                         data = b->presumed_offset + r->data;
 503                 else
 504                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 505                         data = (b->presumed_offset + r->data) >> 32;
 506                 else
 507                         data = r->data;
 508
 509                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 510                         if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART)
 511                                 data |= r->tor;
 512                         else
 513                                 data |= r->vor;
 514                 }
 515
 516                 if (is_iomem)
 517                         iowrite32_native(data, (void __force __iomem *)
 518                                                 &pushbuf[r->reloc_index]);
 519                 else
 520                         pushbuf[r->reloc_index] = data;
 521         }
 522
 523         kfree(reloc);
 524         return ret;
 525 }
 526
 527 int
 528 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 529                           struct drm_file *file_priv)
 530 {
 531         struct drm_nouveau_gem_pushbuf *req = data;
 532         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
 533         struct nouveau_channel *chan;
 534         struct validate_op op;
 535         struct nouveau_fence* fence = 0;
 536         uint32_t *pushbuf = NULL;
 537         int ret = 0, do_reloc = 0, i;
 538
 539         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 540         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
 541
 542         if (req->nr_dwords >= chan->dma.max ||
 543             req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
 544             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
 545                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
 546                 NV_ERROR(dev, "  dwords : %d max %d\n", req->nr_dwords,
 547                          chan->dma.max - 1);
 548                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
 549                          NOUVEAU_GEM_MAX_BUFFERS);
 550                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
 551                          NOUVEAU_GEM_MAX_RELOCS);
 552                 return -EINVAL;
 553         }
 554
 555         pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t));
 556         if (IS_ERR(pushbuf))
 557                 return PTR_ERR(pushbuf);
 558
 559         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 560         if (IS_ERR(bo)) {
 561                 kfree(pushbuf);
 562                 return PTR_ERR(bo);
 563         }
 564
 565         mutex_lock(&dev->struct_mutex);
 566
 567         /* Validate buffer list */
 568         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 569                                            req->nr_buffers, &op, &do_reloc);
 570         if (ret)
 571                 goto out;
 572
 573         /* Apply any relocations that are required */
 574         if (do_reloc) {
 575                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers,
 576                                                       bo, req->nr_relocs,
 577                                                       req->relocs,
 578                                                       req->nr_dwords, 0,
 579                                                       pushbuf, false);
 580                 if (ret)
 581                         goto out;
 582         }
 583
 584         /* Emit push buffer to the hw
 585          */
 586         ret = RING_SPACE(chan, req->nr_dwords);
 587         if (ret)
 588                 goto out;
 589
 590         OUT_RINGp(chan, pushbuf, req->nr_dwords);
 591
 592         ret = nouveau_fence_new(chan, &fence, true);
 593         if (ret) {
 594                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 595                 WIND_RING(chan);
 596                 goto out;
 597         }
 598
 599         if (nouveau_gem_pushbuf_sync(chan)) {
 600                 ret = nouveau_fence_wait(fence, NULL, false, false);
 601                 if (ret) {
 602                         for (i = 0; i < req->nr_dwords; i++)
 603                                 NV_ERROR(dev, "0x%08x\n", pushbuf[i]);
 604                         NV_ERROR(dev, "^^ above push buffer is fail :(\n");
 605                 }
 606         }
 607
 608 out:
 609         validate_fini(&op, fence);
 610         nouveau_fence_unref((void**)&fence);
 611         mutex_unlock(&dev->struct_mutex);
 612         kfree(pushbuf);
 613         kfree(bo);
 614         return ret;
 615 }
 616
 617 #define PUSHBUF_CAL (dev_priv->card_type >= NV_20)
 618
 619 int
 620 nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data,
 621                                struct drm_file *file_priv)
 622 {
 623         struct drm_nouveau_private *dev_priv = dev->dev_private;
 624         struct drm_nouveau_gem_pushbuf_call *req = data;
 625         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
 626         struct nouveau_channel *chan;
 627         struct drm_gem_object *gem;
 628         struct nouveau_bo *pbbo;
 629         struct validate_op op;
 630         struct nouveau_fence* fence = 0;
 631         int i, ret = 0, do_reloc = 0;
 632
 633         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 634         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
 635
 636         if (unlikely(req->handle == 0))
 637                 goto out_next;
 638
 639         if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
 640             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
 641                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
 642                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
 643                          NOUVEAU_GEM_MAX_BUFFERS);
 644                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
 645                          NOUVEAU_GEM_MAX_RELOCS);
 646                 return -EINVAL;
 647         }
 648
 649         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 650         if (IS_ERR(bo))
 651                 return PTR_ERR(bo);
 652
 653         mutex_lock(&dev->struct_mutex);
 654
 655         /* Validate buffer list */
 656         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 657                                            req->nr_buffers, &op, &do_reloc);
 658         if (ret) {
 659                 NV_ERROR(dev, "validate: %d\n", ret);
 660                 goto out;
 661         }
 662
 663         /* Validate DMA push buffer */
 664         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 665         if (!gem) {
 666                 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle);
 667                 ret = -EINVAL;
 668                 goto out;
 669         }
 670         pbbo = nouveau_gem_object(gem);
 671
 672         if ((req->offset & 3) || req->nr_dwords < 2 ||
 673             (unsigned long)req->offset > (unsigned long)pbbo->bo.mem.size ||
 674             (unsigned long)req->nr_dwords >
 675              ((unsigned long)(pbbo->bo.mem.size - req->offset ) >> 2)) {
 676                 NV_ERROR(dev, "pb call misaligned or out of bounds: "
 677                               "%d + %d * 4 > %ld\n",
 678                          req->offset, req->nr_dwords, pbbo->bo.mem.size);
 679                 ret = -EINVAL;
 680                 drm_gem_object_unreference(gem);
 681                 goto out;
 682         }
 683
 684         ret = ttm_bo_reserve(&pbbo->bo, false, false, true,
 685                              chan->fence.sequence);
 686         if (ret) {
 687                 NV_ERROR(dev, "resv pb: %d\n", ret);
 688                 drm_gem_object_unreference(gem);
 689                 goto out;
 690         }
 691
 692         nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type);
 693         ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false);
 694         if (ret) {
 695                 NV_ERROR(dev, "validate pb: %d\n", ret);
 696                 ttm_bo_unreserve(&pbbo->bo);
 697                 drm_gem_object_unreference(gem);
 698                 goto out;
 699         }
 700
 701         list_add_tail(&pbbo->entry, &op.both_list);
 702
 703         /* If presumed return address doesn't match, we need to map the
 704          * push buffer and fix it..
 705          */
 706         if (!PUSHBUF_CAL) {
 707                 uint32_t retaddy;
 708
 709                 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) {
 710                         ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS);
 711                         if (ret) {
 712                                 NV_ERROR(dev, "jmp_space: %d\n", ret);
 713                                 goto out;
 714                         }
 715                 }
 716
 717                 retaddy  = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
 718                 retaddy |= 0x20000000;
 719                 if (retaddy != req->suffix0) {
 720                         req->suffix0 = retaddy;
 721                         do_reloc = 1;
 722                 }
 723         }
 724
 725         /* Apply any relocations that are required */
 726         if (do_reloc) {
 727                 void *pbvirt;
 728                 bool is_iomem;
 729                 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages,
 730                                   &pbbo->kmap);
 731                 if (ret) {
 732                         NV_ERROR(dev, "kmap pb: %d\n", ret);
 733                         goto out;
 734                 }
 735
 736                 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem);
 737                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo,
 738                                                       req->nr_relocs,
 739                                                       req->relocs,
 740                                                       req->nr_dwords,
 741                                                       req->offset / 4,
 742                                                       pbvirt, is_iomem);
 743
 744                 if (!PUSHBUF_CAL) {
 745                         nouveau_bo_wr32(pbbo,
 746                                         req->offset / 4 + req->nr_dwords - 2,
 747                                         req->suffix0);
 748                 }
 749
 750                 ttm_bo_kunmap(&pbbo->kmap);
 751                 if (ret) {
 752                         NV_ERROR(dev, "reloc apply: %d\n", ret);
 753                         goto out;
 754                 }
 755         }
 756
 757         if (PUSHBUF_CAL) {
 758                 ret = RING_SPACE(chan, 2);
 759                 if (ret) {
 760                         NV_ERROR(dev, "cal_space: %d\n", ret);
 761                         goto out;
 762                 }
 763                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
 764                                   req->offset) | 2);
 765                 OUT_RING(chan, 0);
 766         } else {
 767                 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS);
 768                 if (ret) {
 769                         NV_ERROR(dev, "jmp_space: %d\n", ret);
 770                         goto out;
 771                 }
 772                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
 773                                   req->offset) | 0x20000000);
 774                 OUT_RING(chan, 0);
 775
 776                 /* Space the jumps apart with NOPs. */
 777                 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
 778                         OUT_RING(chan, 0);
 779         }
 780
 781         ret = nouveau_fence_new(chan, &fence, true);
 782         if (ret) {
 783                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
 784                 WIND_RING(chan);
 785                 goto out;
 786         }
 787
 788 out:
 789         validate_fini(&op, fence);
 790         nouveau_fence_unref((void**)&fence);
 791         mutex_unlock(&dev->struct_mutex);
 792         kfree(bo);
 793
 794 out_next:
 795         if (PUSHBUF_CAL) {
 796                 req->suffix0 = 0x00020000;
 797                 req->suffix1 = 0x00000000;
 798         } else {
 799                 req->suffix0 = 0x20000000 |
 800                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
 801                 req->suffix1 = 0x00000000;
 802         }
 803
 804         return ret;
 805 }
 806
 807 int
 808 nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data,
 809                                 struct drm_file *file_priv)
 810 {
 811         struct drm_nouveau_private *dev_priv = dev->dev_private;
 812         struct drm_nouveau_gem_pushbuf_call *req = data;
 813
 814         req->vram_available = dev_priv->fb_aper_free;
 815         req->gart_available = dev_priv->gart_info.aper_free;
 816
 817         return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv);
 818 }
 819
 820 static inline uint32_t
 821 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 822 {
 823         uint32_t flags = 0;
 824
 825         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 826                 flags |= TTM_PL_FLAG_VRAM;
 827         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 828                 flags |= TTM_PL_FLAG_TT;
 829
 830         return flags;
 831 }
 832
 833 int
 834 nouveau_gem_ioctl_pin(struct drm_device *dev, void *data,
 835                       struct drm_file *file_priv)
 836 {
 837         struct drm_nouveau_gem_pin *req = data;
 838         struct drm_gem_object *gem;
 839         struct nouveau_bo *nvbo;
 840         int ret = 0;
 841
 842         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 843
 844         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 845                 NV_ERROR(dev, "pin only allowed without kernel modesetting\n");
 846                 return -EINVAL;
 847         }
 848
 849         if (!DRM_SUSER(DRM_CURPROC))
 850                 return -EPERM;
 851
 852         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 853         if (!gem)
 854                 return -EINVAL;
 855         nvbo = nouveau_gem_object(gem);
 856
 857         ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain));
 858         if (ret)
 859                 goto out;
 860
 861         req->offset = nvbo->bo.offset;
 862         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 863                 req->domain = NOUVEAU_GEM_DOMAIN_GART;
 864         else
 865                 req->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 866
 867 out:
 868         mutex_lock(&dev->struct_mutex);
 869         drm_gem_object_unreference(gem);
 870         mutex_unlock(&dev->struct_mutex);
 871
 872         return ret;
 873 }
 874
 875 int
 876 nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data,
 877                         struct drm_file *file_priv)
 878 {
 879         struct drm_nouveau_gem_pin *req = data;
 880         struct drm_gem_object *gem;
 881         int ret;
 882
 883         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 884
 885         if (drm_core_check_feature(dev, DRIVER_MODESET))
 886                 return -EINVAL;
 887
 888         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 889         if (!gem)
 890                 return -EINVAL;
 891
 892         ret = nouveau_bo_unpin(nouveau_gem_object(gem));
 893
 894         mutex_lock(&dev->struct_mutex);
 895         drm_gem_object_unreference(gem);
 896         mutex_unlock(&dev->struct_mutex);
 897
 898         return ret;
 899 }
 900
 901 int
 902 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 903                            struct drm_file *file_priv)
 904 {
 905         struct drm_nouveau_gem_cpu_prep *req = data;
 906         struct drm_gem_object *gem;
 907         struct nouveau_bo *nvbo;
 908         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 909         int ret = -EINVAL;
 910
 911         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 912
 913         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 914         if (!gem)
 915                 return ret;
 916         nvbo = nouveau_gem_object(gem);
 917
 918         if (nvbo->cpu_filp) {
 919                 if (nvbo->cpu_filp == file_priv)
 920                         goto out;
 921
 922                 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
 923                 if (ret)
 924                         goto out;
 925         }
 926
 927         if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
 928                 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
 929         } else {
 930                 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
 931                 if (ret == 0)
 932                         nvbo->cpu_filp = file_priv;
 933         }
 934
 935 out:
 936         mutex_lock(&dev->struct_mutex);
 937         drm_gem_object_unreference(gem);
 938         mutex_unlock(&dev->struct_mutex);
 939         return ret;
 940 }
 941
 942 int
 943 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 944                            struct drm_file *file_priv)
 945 {
 946         struct drm_nouveau_gem_cpu_prep *req = data;
 947         struct drm_gem_object *gem;
 948         struct nouveau_bo *nvbo;
 949         int ret = -EINVAL;
 950
 951         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 952
 953         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 954         if (!gem)
 955                 return ret;
 956         nvbo = nouveau_gem_object(gem);
 957
 958         if (nvbo->cpu_filp != file_priv)
 959                 goto out;
 960         nvbo->cpu_filp = NULL;
 961
 962         ttm_bo_synccpu_write_release(&nvbo->bo);
 963         ret = 0;
 964
 965 out:
 966         mutex_lock(&dev->struct_mutex);
 967         drm_gem_object_unreference(gem);
 968         mutex_unlock(&dev->struct_mutex);
 969         return ret;
 970 }
 971
 972 int
 973 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 974                        struct drm_file *file_priv)
 975 {
 976         struct drm_nouveau_gem_info *req = data;
 977         struct drm_gem_object *gem;
 978         int ret;
 979
 980         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
 981
 982         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 983         if (!gem)
 984                 return -EINVAL;
 985
 986         ret = nouveau_gem_info(gem, req);
 987         mutex_lock(&dev->struct_mutex);
 988         drm_gem_object_unreference(gem);
 989         mutex_unlock(&dev->struct_mutex);
 990         return ret;
 991 }
 992