drivers/gpu/drm/nouveau/nouveau_gem.c

   1 /*
   2  * Copyright (C) 2008 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <subdev/fb.h>
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_fence.h"
  32 #include "nouveau_abi16.h"
  33
  34 #include "nouveau_ttm.h"
  35 #include "nouveau_gem.h"
  36
  37 int
  38 nouveau_gem_object_new(struct drm_gem_object *gem)
  39 {
  40         return 0;
  41 }
  42
  43 void
  44 nouveau_gem_object_del(struct drm_gem_object *gem)
  45 {
  46         struct nouveau_bo *nvbo = gem->driver_private;
  47         struct ttm_buffer_object *bo = &nvbo->bo;
  48
  49         if (!nvbo)
  50                 return;
  51         nvbo->gem = NULL;
  52
  53         if (unlikely(nvbo->pin_refcnt)) {
  54                 nvbo->pin_refcnt = 1;
  55                 nouveau_bo_unpin(nvbo);
  56         }
  57
  58         if (gem->import_attach)
  59                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  60
  61         ttm_bo_unref(&bo);
  62
  63         drm_gem_object_release(gem);
  64         kfree(gem);
  65 }
  66
  67 int
  68 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  69 {
  70         struct nouveau_cli *cli = nouveau_cli(file_priv);
  71         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  72         struct nouveau_vma *vma;
  73         int ret;
  74
  75         if (!cli->base.vm)
  76                 return 0;
  77
  78         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  79         if (ret)
  80                 return ret;
  81
  82         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  83         if (!vma) {
  84                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  85                 if (!vma) {
  86                         ret = -ENOMEM;
  87                         goto out;
  88                 }
  89
  90                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  91                 if (ret) {
  92                         kfree(vma);
  93                         goto out;
  94                 }
  95         } else {
  96                 vma->refcount++;
  97         }
  98
  99 out:
 100         ttm_bo_unreserve(&nvbo->bo);
 101         return ret;
 102 }
 103
 104 void
 105 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 106 {
 107         struct nouveau_cli *cli = nouveau_cli(file_priv);
 108         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 109         struct nouveau_vma *vma;
 110         int ret;
 111
 112         if (!cli->base.vm)
 113                 return;
 114
 115         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 116         if (ret)
 117                 return;
 118
 119         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 120         if (vma) {
 121                 if (--vma->refcount == 0) {
 122                         nouveau_bo_vma_del(nvbo, vma);
 123                         kfree(vma);
 124                 }
 125         }
 126         ttm_bo_unreserve(&nvbo->bo);
 127 }
 128
 129 int
 130 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 131                 uint32_t tile_mode, uint32_t tile_flags,
 132                 struct nouveau_bo **pnvbo)
 133 {
 134         struct nouveau_drm *drm = nouveau_drm(dev);
 135         struct nouveau_bo *nvbo;
 136         u32 flags = 0;
 137         int ret;
 138
 139         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 140                 flags |= TTM_PL_FLAG_VRAM;
 141         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 142                 flags |= TTM_PL_FLAG_TT;
 143         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 144                 flags |= TTM_PL_FLAG_SYSTEM;
 145
 146         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 147                              tile_flags, NULL, pnvbo);
 148         if (ret)
 149                 return ret;
 150         nvbo = *pnvbo;
 151
 152         /* we restrict allowed domains on nv50+ to only the types
 153          * that were requested at creation time.  not possibly on
 154          * earlier chips without busting the ABI.
 155          */
 156         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 157                               NOUVEAU_GEM_DOMAIN_GART;
 158         if (nv_device(drm->device)->card_type >= NV_50)
 159                 nvbo->valid_domains &= domain;
 160
 161         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 162         if (!nvbo->gem) {
 163                 nouveau_bo_ref(NULL, pnvbo);
 164                 return -ENOMEM;
 165         }
 166
 167         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 168         nvbo->gem->driver_private = nvbo;
 169         return 0;
 170 }
 171
 172 static int
 173 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 174                  struct drm_nouveau_gem_info *rep)
 175 {
 176         struct nouveau_cli *cli = nouveau_cli(file_priv);
 177         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 178         struct nouveau_vma *vma;
 179
 180         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 181                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 182         else
 183                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 184
 185         rep->offset = nvbo->bo.offset;
 186         if (cli->base.vm) {
 187                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 188                 if (!vma)
 189                         return -EINVAL;
 190
 191                 rep->offset = vma->offset;
 192         }
 193
 194         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 195         rep->map_handle = nvbo->bo.addr_space_offset;
 196         rep->tile_mode = nvbo->tile_mode;
 197         rep->tile_flags = nvbo->tile_flags;
 198         return 0;
 199 }
 200
 201 int
 202 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 203                       struct drm_file *file_priv)
 204 {
 205         struct nouveau_drm *drm = nouveau_drm(dev);
 206         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 207         struct drm_nouveau_gem_new *req = data;
 208         struct nouveau_bo *nvbo = NULL;
 209         int ret = 0;
 210
 211         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 212
 213         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 214                 NV_ERROR(drm, "bad page flags: 0x%08x\n", req->info.tile_flags);
 215                 return -EINVAL;
 216         }
 217
 218         ret = nouveau_gem_new(dev, req->info.size, req->align,
 219                               req->info.domain, req->info.tile_mode,
 220                               req->info.tile_flags, &nvbo);
 221         if (ret)
 222                 return ret;
 223
 224         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 225         if (ret == 0) {
 226                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 227                 if (ret)
 228                         drm_gem_handle_delete(file_priv, req->info.handle);
 229         }
 230
 231         /* drop reference from allocate - handle holds it now */
 232         drm_gem_object_unreference_unlocked(nvbo->gem);
 233         return ret;
 234 }
 235
 236 static int
 237 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 238                        uint32_t write_domains, uint32_t valid_domains)
 239 {
 240         struct nouveau_bo *nvbo = gem->driver_private;
 241         struct ttm_buffer_object *bo = &nvbo->bo;
 242         uint32_t domains = valid_domains & nvbo->valid_domains &
 243                 (write_domains ? write_domains : read_domains);
 244         uint32_t pref_flags = 0, valid_flags = 0;
 245
 246         if (!domains)
 247                 return -EINVAL;
 248
 249         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 250                 valid_flags |= TTM_PL_FLAG_VRAM;
 251
 252         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 253                 valid_flags |= TTM_PL_FLAG_TT;
 254
 255         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 256             bo->mem.mem_type == TTM_PL_VRAM)
 257                 pref_flags |= TTM_PL_FLAG_VRAM;
 258
 259         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 260                  bo->mem.mem_type == TTM_PL_TT)
 261                 pref_flags |= TTM_PL_FLAG_TT;
 262
 263         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 264                 pref_flags |= TTM_PL_FLAG_VRAM;
 265
 266         else
 267                 pref_flags |= TTM_PL_FLAG_TT;
 268
 269         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 270
 271         return 0;
 272 }
 273
 274 struct validate_op {
 275         struct list_head vram_list;
 276         struct list_head gart_list;
 277         struct list_head both_list;
 278 };
 279
 280 static void
 281 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 282 {
 283         struct list_head *entry, *tmp;
 284         struct nouveau_bo *nvbo;
 285
 286         list_for_each_safe(entry, tmp, list) {
 287                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 288
 289                 nouveau_bo_fence(nvbo, fence);
 290
 291                 if (unlikely(nvbo->validate_mapped)) {
 292                         ttm_bo_kunmap(&nvbo->kmap);
 293                         nvbo->validate_mapped = false;
 294                 }
 295
 296                 list_del(&nvbo->entry);
 297                 nvbo->reserved_by = NULL;
 298                 ttm_bo_unreserve(&nvbo->bo);
 299                 drm_gem_object_unreference_unlocked(nvbo->gem);
 300         }
 301 }
 302
 303 static void
 304 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 305 {
 306         validate_fini_list(&op->vram_list, fence);
 307         validate_fini_list(&op->gart_list, fence);
 308         validate_fini_list(&op->both_list, fence);
 309 }
 310
 311 static int
 312 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 313               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 314               int nr_buffers, struct validate_op *op)
 315 {
 316         struct drm_device *dev = chan->drm->dev;
 317         struct nouveau_drm *drm = nouveau_drm(dev);
 318         uint32_t sequence;
 319         int trycnt = 0;
 320         int ret, i;
 321         struct nouveau_bo *res_bo = NULL;
 322
 323         sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 324 retry:
 325         if (++trycnt > 100000) {
 326                 NV_ERROR(drm, "%s failed and gave up.\n", __func__);
 327                 return -EINVAL;
 328         }
 329
 330         for (i = 0; i < nr_buffers; i++) {
 331                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 332                 struct drm_gem_object *gem;
 333                 struct nouveau_bo *nvbo;
 334
 335                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 336                 if (!gem) {
 337                         NV_ERROR(drm, "Unknown handle 0x%08x\n", b->handle);
 338                         validate_fini(op, NULL);
 339                         return -ENOENT;
 340                 }
 341                 nvbo = gem->driver_private;
 342                 if (nvbo == res_bo) {
 343                         res_bo = NULL;
 344                         drm_gem_object_unreference_unlocked(gem);
 345                         continue;
 346                 }
 347
 348                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 349                         NV_ERROR(drm, "multiple instances of buffer %d on "
 350                                       "validation list\n", b->handle);
 351                         drm_gem_object_unreference_unlocked(gem);
 352                         validate_fini(op, NULL);
 353                         return -EINVAL;
 354                 }
 355
 356                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 357                 if (ret) {
 358                         validate_fini(op, NULL);
 359                         if (unlikely(ret == -EAGAIN)) {
 360                                 sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 361                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 362                                                               sequence);
 363                                 if (!ret)
 364                                         res_bo = nvbo;
 365                         }
 366                         if (unlikely(ret)) {
 367                                 drm_gem_object_unreference_unlocked(gem);
 368                                 if (ret != -ERESTARTSYS)
 369                                         NV_ERROR(drm, "fail reserve\n");
 370                                 return ret;
 371                         }
 372                 }
 373
 374                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 375                 nvbo->reserved_by = file_priv;
 376                 nvbo->pbbo_index = i;
 377                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 378                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 379                         list_add_tail(&nvbo->entry, &op->both_list);
 380                 else
 381                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 382                         list_add_tail(&nvbo->entry, &op->vram_list);
 383                 else
 384                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 385                         list_add_tail(&nvbo->entry, &op->gart_list);
 386                 else {
 387                         NV_ERROR(drm, "invalid valid domains: 0x%08x\n",
 388                                  b->valid_domains);
 389                         list_add_tail(&nvbo->entry, &op->both_list);
 390                         validate_fini(op, NULL);
 391                         return -EINVAL;
 392                 }
 393                 if (nvbo == res_bo)
 394                         goto retry;
 395         }
 396
 397         return 0;
 398 }
 399
 400 static int
 401 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 402 {
 403         struct nouveau_fence *fence = NULL;
 404         int ret = 0;
 405
 406         spin_lock(&nvbo->bo.bdev->fence_lock);
 407         if (nvbo->bo.sync_obj)
 408                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 409         spin_unlock(&nvbo->bo.bdev->fence_lock);
 410
 411         if (fence) {
 412                 ret = nouveau_fence_sync(fence, chan);
 413                 nouveau_fence_unref(&fence);
 414         }
 415
 416         return ret;
 417 }
 418
 419 static int
 420 validate_list(struct nouveau_channel *chan, struct list_head *list,
 421               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
 422 {
 423         struct nouveau_drm *drm = chan->drm;
 424         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 425                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 426         struct nouveau_bo *nvbo;
 427         int ret, relocs = 0;
 428
 429         list_for_each_entry(nvbo, list, entry) {
 430                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 431
 432                 ret = validate_sync(chan, nvbo);
 433                 if (unlikely(ret)) {
 434                         NV_ERROR(drm, "fail pre-validate sync\n");
 435                         return ret;
 436                 }
 437
 438                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 439                                              b->write_domains,
 440                                              b->valid_domains);
 441                 if (unlikely(ret)) {
 442                         NV_ERROR(drm, "fail set_domain\n");
 443                         return ret;
 444                 }
 445
 446                 ret = nouveau_bo_validate(nvbo, true, false);
 447                 if (unlikely(ret)) {
 448                         if (ret != -ERESTARTSYS)
 449                                 NV_ERROR(drm, "fail ttm_validate\n");
 450                         return ret;
 451                 }
 452
 453                 ret = validate_sync(chan, nvbo);
 454                 if (unlikely(ret)) {
 455                         NV_ERROR(drm, "fail post-validate sync\n");
 456                         return ret;
 457                 }
 458
 459                 if (nv_device(drm->device)->card_type < NV_50) {
 460                         if (nvbo->bo.offset == b->presumed.offset &&
 461                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 462                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 463                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 464                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 465                                 continue;
 466
 467                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 468                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 469                         else
 470                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 471                         b->presumed.offset = nvbo->bo.offset;
 472                         b->presumed.valid = 0;
 473                         relocs++;
 474
 475                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 476                                              &b->presumed, sizeof(b->presumed)))
 477                                 return -EFAULT;
 478                 }
 479         }
 480
 481         return relocs;
 482 }
 483
 484 static int
 485 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 486                              struct drm_file *file_priv,
 487                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 488                              uint64_t user_buffers, int nr_buffers,
 489                              struct validate_op *op, int *apply_relocs)
 490 {
 491         struct nouveau_drm *drm = chan->drm;
 492         int ret, relocs = 0;
 493
 494         INIT_LIST_HEAD(&op->vram_list);
 495         INIT_LIST_HEAD(&op->gart_list);
 496         INIT_LIST_HEAD(&op->both_list);
 497
 498         if (nr_buffers == 0)
 499                 return 0;
 500
 501         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 502         if (unlikely(ret)) {
 503                 if (ret != -ERESTARTSYS)
 504                         NV_ERROR(drm, "validate_init\n");
 505                 return ret;
 506         }
 507
 508         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
 509         if (unlikely(ret < 0)) {
 510                 if (ret != -ERESTARTSYS)
 511                         NV_ERROR(drm, "validate vram_list\n");
 512                 validate_fini(op, NULL);
 513                 return ret;
 514         }
 515         relocs += ret;
 516
 517         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
 518         if (unlikely(ret < 0)) {
 519                 if (ret != -ERESTARTSYS)
 520                         NV_ERROR(drm, "validate gart_list\n");
 521                 validate_fini(op, NULL);
 522                 return ret;
 523         }
 524         relocs += ret;
 525
 526         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
 527         if (unlikely(ret < 0)) {
 528                 if (ret != -ERESTARTSYS)
 529                         NV_ERROR(drm, "validate both_list\n");
 530                 validate_fini(op, NULL);
 531                 return ret;
 532         }
 533         relocs += ret;
 534
 535         *apply_relocs = relocs;
 536         return 0;
 537 }
 538
 539 static inline void *
 540 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 541 {
 542         void *mem;
 543         void __user *userptr = (void __force __user *)(uintptr_t)user;
 544
 545         mem = kmalloc(nmemb * size, GFP_KERNEL);
 546         if (!mem)
 547                 return ERR_PTR(-ENOMEM);
 548
 549         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 550                 kfree(mem);
 551                 return ERR_PTR(-EFAULT);
 552         }
 553
 554         return mem;
 555 }
 556
 557 static int
 558 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
 559                                 struct drm_nouveau_gem_pushbuf *req,
 560                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 561 {
 562         struct nouveau_drm *drm = nouveau_drm(dev);
 563         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 564         int ret = 0;
 565         unsigned i;
 566
 567         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 568         if (IS_ERR(reloc))
 569                 return PTR_ERR(reloc);
 570
 571         for (i = 0; i < req->nr_relocs; i++) {
 572                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 573                 struct drm_nouveau_gem_pushbuf_bo *b;
 574                 struct nouveau_bo *nvbo;
 575                 uint32_t data;
 576
 577                 if (unlikely(r->bo_index > req->nr_buffers)) {
 578                         NV_ERROR(drm, "reloc bo index invalid\n");
 579                         ret = -EINVAL;
 580                         break;
 581                 }
 582
 583                 b = &bo[r->bo_index];
 584                 if (b->presumed.valid)
 585                         continue;
 586
 587                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 588                         NV_ERROR(drm, "reloc container bo index invalid\n");
 589                         ret = -EINVAL;
 590                         break;
 591                 }
 592                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 593
 594                 if (unlikely(r->reloc_bo_offset + 4 >
 595                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 596                         NV_ERROR(drm, "reloc outside of bo\n");
 597                         ret = -EINVAL;
 598                         break;
 599                 }
 600
 601                 if (!nvbo->kmap.virtual) {
 602                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 603                                           &nvbo->kmap);
 604                         if (ret) {
 605                                 NV_ERROR(drm, "failed kmap for reloc\n");
 606                                 break;
 607                         }
 608                         nvbo->validate_mapped = true;
 609                 }
 610
 611                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 612                         data = b->presumed.offset + r->data;
 613                 else
 614                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 615                         data = (b->presumed.offset + r->data) >> 32;
 616                 else
 617                         data = r->data;
 618
 619                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 620                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 621                                 data |= r->tor;
 622                         else
 623                                 data |= r->vor;
 624                 }
 625
 626                 spin_lock(&nvbo->bo.bdev->fence_lock);
 627                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 628                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 629                 if (ret) {
 630                         NV_ERROR(drm, "reloc wait_idle failed: %d\n", ret);
 631                         break;
 632                 }
 633
 634                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 635         }
 636
 637         kfree(reloc);
 638         return ret;
 639 }
 640
 641 int
 642 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 643                           struct drm_file *file_priv)
 644 {
 645         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 646         struct nouveau_abi16_chan *temp;
 647         struct nouveau_drm *drm = nouveau_drm(dev);
 648         struct drm_nouveau_gem_pushbuf *req = data;
 649         struct drm_nouveau_gem_pushbuf_push *push;
 650         struct drm_nouveau_gem_pushbuf_bo *bo;
 651         struct nouveau_channel *chan = NULL;
 652         struct validate_op op;
 653         struct nouveau_fence *fence = NULL;
 654         int i, j, ret = 0, do_reloc = 0;
 655
 656         if (unlikely(!abi16))
 657                 return -ENOMEM;
 658
 659         list_for_each_entry(temp, &abi16->channels, head) {
 660                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 661                         chan = temp->chan;
 662                         break;
 663                 }
 664         }
 665
 666         if (!chan)
 667                 return nouveau_abi16_put(abi16, -ENOENT);
 668
 669         req->vram_available = drm->gem.vram_available;
 670         req->gart_available = drm->gem.gart_available;
 671         if (unlikely(req->nr_push == 0))
 672                 goto out_next;
 673
 674         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 675                 NV_ERROR(drm, "pushbuf push count exceeds limit: %d max %d\n",
 676                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 677                 return nouveau_abi16_put(abi16, -EINVAL);
 678         }
 679
 680         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 681                 NV_ERROR(drm, "pushbuf bo count exceeds limit: %d max %d\n",
 682                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 683                 return nouveau_abi16_put(abi16, -EINVAL);
 684         }
 685
 686         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 687                 NV_ERROR(drm, "pushbuf reloc count exceeds limit: %d max %d\n",
 688                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 689                 return nouveau_abi16_put(abi16, -EINVAL);
 690         }
 691
 692         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 693         if (IS_ERR(push))
 694                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 695
 696         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 697         if (IS_ERR(bo)) {
 698                 kfree(push);
 699                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 700         }
 701
 702         /* Ensure all push buffers are on validate list */
 703         for (i = 0; i < req->nr_push; i++) {
 704                 if (push[i].bo_index >= req->nr_buffers) {
 705                         NV_ERROR(drm, "push %d buffer not in list\n", i);
 706                         ret = -EINVAL;
 707                         goto out_prevalid;
 708                 }
 709         }
 710
 711         /* Validate buffer list */
 712         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 713                                            req->nr_buffers, &op, &do_reloc);
 714         if (ret) {
 715                 if (ret != -ERESTARTSYS)
 716                         NV_ERROR(drm, "validate: %d\n", ret);
 717                 goto out_prevalid;
 718         }
 719
 720         /* Apply any relocations that are required */
 721         if (do_reloc) {
 722                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
 723                 if (ret) {
 724                         NV_ERROR(drm, "reloc apply: %d\n", ret);
 725                         goto out;
 726                 }
 727         }
 728
 729         if (chan->dma.ib_max) {
 730                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 731                 if (ret) {
 732                         NV_ERROR(drm, "nv50cal_space: %d\n", ret);
 733                         goto out;
 734                 }
 735
 736                 for (i = 0; i < req->nr_push; i++) {
 737                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 738                                 bo[push[i].bo_index].user_priv;
 739
 740                         nv50_dma_push(chan, nvbo, push[i].offset,
 741                                       push[i].length);
 742                 }
 743         } else
 744         if (nv_device(drm->device)->chipset >= 0x25) {
 745                 ret = RING_SPACE(chan, req->nr_push * 2);
 746                 if (ret) {
 747                         NV_ERROR(drm, "cal_space: %d\n", ret);
 748                         goto out;
 749                 }
 750
 751                 for (i = 0; i < req->nr_push; i++) {
 752                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 753                                 bo[push[i].bo_index].user_priv;
 754
 755                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 756                         OUT_RING(chan, 0);
 757                 }
 758         } else {
 759                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 760                 if (ret) {
 761                         NV_ERROR(drm, "jmp_space: %d\n", ret);
 762                         goto out;
 763                 }
 764
 765                 for (i = 0; i < req->nr_push; i++) {
 766                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 767                                 bo[push[i].bo_index].user_priv;
 768                         uint32_t cmd;
 769
 770                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 771                         cmd |= 0x20000000;
 772                         if (unlikely(cmd != req->suffix0)) {
 773                                 if (!nvbo->kmap.virtual) {
 774                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 775                                                           nvbo->bo.mem.
 776                                                           num_pages,
 777                                                           &nvbo->kmap);
 778                                         if (ret) {
 779                                                 WIND_RING(chan);
 780                                                 goto out;
 781                                         }
 782                                         nvbo->validate_mapped = true;
 783                                 }
 784
 785                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 786                                                 push[i].length - 8) / 4, cmd);
 787                         }
 788
 789                         OUT_RING(chan, 0x20000000 |
 790                                       (nvbo->bo.offset + push[i].offset));
 791                         OUT_RING(chan, 0);
 792                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 793                                 OUT_RING(chan, 0);
 794                 }
 795         }
 796
 797         ret = nouveau_fence_new(chan, &fence);
 798         if (ret) {
 799                 NV_ERROR(drm, "error fencing pushbuf: %d\n", ret);
 800                 WIND_RING(chan);
 801                 goto out;
 802         }
 803
 804 out:
 805         validate_fini(&op, fence);
 806         nouveau_fence_unref(&fence);
 807
 808 out_prevalid:
 809         kfree(bo);
 810         kfree(push);
 811
 812 out_next:
 813         if (chan->dma.ib_max) {
 814                 req->suffix0 = 0x00000000;
 815                 req->suffix1 = 0x00000000;
 816         } else
 817         if (nv_device(drm->device)->chipset >= 0x25) {
 818                 req->suffix0 = 0x00020000;
 819                 req->suffix1 = 0x00000000;
 820         } else {
 821                 req->suffix0 = 0x20000000 |
 822                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 823                 req->suffix1 = 0x00000000;
 824         }
 825
 826         return nouveau_abi16_put(abi16, ret);
 827 }
 828
 829 static inline uint32_t
 830 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 831 {
 832         uint32_t flags = 0;
 833
 834         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 835                 flags |= TTM_PL_FLAG_VRAM;
 836         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 837                 flags |= TTM_PL_FLAG_TT;
 838
 839         return flags;
 840 }
 841
 842 int
 843 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 844                            struct drm_file *file_priv)
 845 {
 846         struct drm_nouveau_gem_cpu_prep *req = data;
 847         struct drm_gem_object *gem;
 848         struct nouveau_bo *nvbo;
 849         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 850         int ret = -EINVAL;
 851
 852         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 853         if (!gem)
 854                 return -ENOENT;
 855         nvbo = nouveau_gem_object(gem);
 856
 857         spin_lock(&nvbo->bo.bdev->fence_lock);
 858         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 859         spin_unlock(&nvbo->bo.bdev->fence_lock);
 860         drm_gem_object_unreference_unlocked(gem);
 861         return ret;
 862 }
 863
 864 int
 865 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 866                            struct drm_file *file_priv)
 867 {
 868         return 0;
 869 }
 870
 871 int
 872 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 873                        struct drm_file *file_priv)
 874 {
 875         struct drm_nouveau_gem_info *req = data;
 876         struct drm_gem_object *gem;
 877         int ret;
 878
 879         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 880         if (!gem)
 881                 return -ENOENT;
 882
 883         ret = nouveau_gem_info(file_priv, gem, req);
 884         drm_gem_object_unreference_unlocked(gem);
 885         return ret;
 886 }
 887