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_cli *cli = nouveau_cli(file_priv);
 207         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 208         struct drm_nouveau_gem_new *req = data;
 209         struct nouveau_bo *nvbo = NULL;
 210         int ret = 0;
 211
 212         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 213
 214         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 215                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 216                 return -EINVAL;
 217         }
 218
 219         ret = nouveau_gem_new(dev, req->info.size, req->align,
 220                               req->info.domain, req->info.tile_mode,
 221                               req->info.tile_flags, &nvbo);
 222         if (ret)
 223                 return ret;
 224
 225         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 226         if (ret == 0) {
 227                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 228                 if (ret)
 229                         drm_gem_handle_delete(file_priv, req->info.handle);
 230         }
 231
 232         /* drop reference from allocate - handle holds it now */
 233         drm_gem_object_unreference_unlocked(nvbo->gem);
 234         return ret;
 235 }
 236
 237 static int
 238 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 239                        uint32_t write_domains, uint32_t valid_domains)
 240 {
 241         struct nouveau_bo *nvbo = gem->driver_private;
 242         struct ttm_buffer_object *bo = &nvbo->bo;
 243         uint32_t domains = valid_domains & nvbo->valid_domains &
 244                 (write_domains ? write_domains : read_domains);
 245         uint32_t pref_flags = 0, valid_flags = 0;
 246
 247         if (!domains)
 248                 return -EINVAL;
 249
 250         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 251                 valid_flags |= TTM_PL_FLAG_VRAM;
 252
 253         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 254                 valid_flags |= TTM_PL_FLAG_TT;
 255
 256         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 257             bo->mem.mem_type == TTM_PL_VRAM)
 258                 pref_flags |= TTM_PL_FLAG_VRAM;
 259
 260         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 261                  bo->mem.mem_type == TTM_PL_TT)
 262                 pref_flags |= TTM_PL_FLAG_TT;
 263
 264         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 265                 pref_flags |= TTM_PL_FLAG_VRAM;
 266
 267         else
 268                 pref_flags |= TTM_PL_FLAG_TT;
 269
 270         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 271
 272         return 0;
 273 }
 274
 275 struct validate_op {
 276         struct list_head vram_list;
 277         struct list_head gart_list;
 278         struct list_head both_list;
 279 };
 280
 281 static void
 282 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
 283 {
 284         struct list_head *entry, *tmp;
 285         struct nouveau_bo *nvbo;
 286
 287         list_for_each_safe(entry, tmp, list) {
 288                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 289
 290                 if (likely(fence))
 291                         nouveau_bo_fence(nvbo, fence);
 292
 293                 if (unlikely(nvbo->validate_mapped)) {
 294                         ttm_bo_kunmap(&nvbo->kmap);
 295                         nvbo->validate_mapped = false;
 296                 }
 297
 298                 list_del(&nvbo->entry);
 299                 nvbo->reserved_by = NULL;
 300                 ttm_bo_unreserve(&nvbo->bo);
 301                 drm_gem_object_unreference_unlocked(nvbo->gem);
 302         }
 303 }
 304
 305 static void
 306 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
 307 {
 308         validate_fini_list(&op->vram_list, fence);
 309         validate_fini_list(&op->gart_list, fence);
 310         validate_fini_list(&op->both_list, fence);
 311 }
 312
 313 static int
 314 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 315               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 316               int nr_buffers, struct validate_op *op)
 317 {
 318         struct nouveau_cli *cli = nouveau_cli(file_priv);
 319         struct drm_device *dev = chan->drm->dev;
 320         struct nouveau_drm *drm = nouveau_drm(dev);
 321         uint32_t sequence;
 322         int trycnt = 0;
 323         int ret, i;
 324         struct nouveau_bo *res_bo = NULL;
 325
 326         sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 327 retry:
 328         if (++trycnt > 100000) {
 329                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 330                 return -EINVAL;
 331         }
 332
 333         for (i = 0; i < nr_buffers; i++) {
 334                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 335                 struct drm_gem_object *gem;
 336                 struct nouveau_bo *nvbo;
 337
 338                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 339                 if (!gem) {
 340                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 341                         validate_fini(op, NULL);
 342                         return -ENOENT;
 343                 }
 344                 nvbo = gem->driver_private;
 345                 if (nvbo == res_bo) {
 346                         res_bo = NULL;
 347                         drm_gem_object_unreference_unlocked(gem);
 348                         continue;
 349                 }
 350
 351                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 352                         NV_ERROR(cli, "multiple instances of buffer %d on "
 353                                       "validation list\n", b->handle);
 354                         drm_gem_object_unreference_unlocked(gem);
 355                         validate_fini(op, NULL);
 356                         return -EINVAL;
 357                 }
 358
 359                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
 360                 if (ret) {
 361                         validate_fini(op, NULL);
 362                         if (unlikely(ret == -EAGAIN)) {
 363                                 sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 364                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 365                                                               sequence);
 366                                 if (!ret)
 367                                         res_bo = nvbo;
 368                         }
 369                         if (unlikely(ret)) {
 370                                 drm_gem_object_unreference_unlocked(gem);
 371                                 if (ret != -ERESTARTSYS)
 372                                         NV_ERROR(cli, "fail reserve\n");
 373                                 return ret;
 374                         }
 375                 }
 376
 377                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 378                 nvbo->reserved_by = file_priv;
 379                 nvbo->pbbo_index = i;
 380                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 381                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 382                         list_add_tail(&nvbo->entry, &op->both_list);
 383                 else
 384                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 385                         list_add_tail(&nvbo->entry, &op->vram_list);
 386                 else
 387                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 388                         list_add_tail(&nvbo->entry, &op->gart_list);
 389                 else {
 390                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 391                                  b->valid_domains);
 392                         list_add_tail(&nvbo->entry, &op->both_list);
 393                         validate_fini(op, NULL);
 394                         return -EINVAL;
 395                 }
 396                 if (nvbo == res_bo)
 397                         goto retry;
 398         }
 399
 400         return 0;
 401 }
 402
 403 static int
 404 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 405 {
 406         struct nouveau_fence *fence = NULL;
 407         int ret = 0;
 408
 409         spin_lock(&nvbo->bo.bdev->fence_lock);
 410         if (nvbo->bo.sync_obj)
 411                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 412         spin_unlock(&nvbo->bo.bdev->fence_lock);
 413
 414         if (fence) {
 415                 ret = nouveau_fence_sync(fence, chan);
 416                 nouveau_fence_unref(&fence);
 417         }
 418
 419         return ret;
 420 }
 421
 422 static int
 423 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 424               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 425               uint64_t user_pbbo_ptr)
 426 {
 427         struct nouveau_drm *drm = chan->drm;
 428         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 429                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 430         struct nouveau_bo *nvbo;
 431         int ret, relocs = 0;
 432
 433         list_for_each_entry(nvbo, list, entry) {
 434                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 435
 436                 ret = validate_sync(chan, nvbo);
 437                 if (unlikely(ret)) {
 438                         NV_ERROR(cli, "fail pre-validate sync\n");
 439                         return ret;
 440                 }
 441
 442                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 443                                              b->write_domains,
 444                                              b->valid_domains);
 445                 if (unlikely(ret)) {
 446                         NV_ERROR(cli, "fail set_domain\n");
 447                         return ret;
 448                 }
 449
 450                 ret = nouveau_bo_validate(nvbo, true, false);
 451                 if (unlikely(ret)) {
 452                         if (ret != -ERESTARTSYS)
 453                                 NV_ERROR(cli, "fail ttm_validate\n");
 454                         return ret;
 455                 }
 456
 457                 ret = validate_sync(chan, nvbo);
 458                 if (unlikely(ret)) {
 459                         NV_ERROR(cli, "fail post-validate sync\n");
 460                         return ret;
 461                 }
 462
 463                 if (nv_device(drm->device)->card_type < NV_50) {
 464                         if (nvbo->bo.offset == b->presumed.offset &&
 465                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 466                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 467                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 468                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 469                                 continue;
 470
 471                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 472                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 473                         else
 474                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 475                         b->presumed.offset = nvbo->bo.offset;
 476                         b->presumed.valid = 0;
 477                         relocs++;
 478
 479                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 480                                              &b->presumed, sizeof(b->presumed)))
 481                                 return -EFAULT;
 482                 }
 483         }
 484
 485         return relocs;
 486 }
 487
 488 static int
 489 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 490                              struct drm_file *file_priv,
 491                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 492                              uint64_t user_buffers, int nr_buffers,
 493                              struct validate_op *op, int *apply_relocs)
 494 {
 495         struct nouveau_cli *cli = nouveau_cli(file_priv);
 496         int ret, relocs = 0;
 497
 498         INIT_LIST_HEAD(&op->vram_list);
 499         INIT_LIST_HEAD(&op->gart_list);
 500         INIT_LIST_HEAD(&op->both_list);
 501
 502         if (nr_buffers == 0)
 503                 return 0;
 504
 505         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 506         if (unlikely(ret)) {
 507                 if (ret != -ERESTARTSYS)
 508                         NV_ERROR(cli, "validate_init\n");
 509                 return ret;
 510         }
 511
 512         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 513         if (unlikely(ret < 0)) {
 514                 if (ret != -ERESTARTSYS)
 515                         NV_ERROR(cli, "validate vram_list\n");
 516                 validate_fini(op, NULL);
 517                 return ret;
 518         }
 519         relocs += ret;
 520
 521         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 522         if (unlikely(ret < 0)) {
 523                 if (ret != -ERESTARTSYS)
 524                         NV_ERROR(cli, "validate gart_list\n");
 525                 validate_fini(op, NULL);
 526                 return ret;
 527         }
 528         relocs += ret;
 529
 530         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 531         if (unlikely(ret < 0)) {
 532                 if (ret != -ERESTARTSYS)
 533                         NV_ERROR(cli, "validate both_list\n");
 534                 validate_fini(op, NULL);
 535                 return ret;
 536         }
 537         relocs += ret;
 538
 539         *apply_relocs = relocs;
 540         return 0;
 541 }
 542
 543 static inline void *
 544 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 545 {
 546         void *mem;
 547         void __user *userptr = (void __force __user *)(uintptr_t)user;
 548
 549         mem = kmalloc(nmemb * size, GFP_KERNEL);
 550         if (!mem)
 551                 return ERR_PTR(-ENOMEM);
 552
 553         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
 554                 kfree(mem);
 555                 return ERR_PTR(-EFAULT);
 556         }
 557
 558         return mem;
 559 }
 560
 561 static int
 562 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 563                                 struct drm_nouveau_gem_pushbuf *req,
 564                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 565 {
 566         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 567         int ret = 0;
 568         unsigned i;
 569
 570         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 571         if (IS_ERR(reloc))
 572                 return PTR_ERR(reloc);
 573
 574         for (i = 0; i < req->nr_relocs; i++) {
 575                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 576                 struct drm_nouveau_gem_pushbuf_bo *b;
 577                 struct nouveau_bo *nvbo;
 578                 uint32_t data;
 579
 580                 if (unlikely(r->bo_index > req->nr_buffers)) {
 581                         NV_ERROR(cli, "reloc bo index invalid\n");
 582                         ret = -EINVAL;
 583                         break;
 584                 }
 585
 586                 b = &bo[r->bo_index];
 587                 if (b->presumed.valid)
 588                         continue;
 589
 590                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 591                         NV_ERROR(cli, "reloc container bo index invalid\n");
 592                         ret = -EINVAL;
 593                         break;
 594                 }
 595                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 596
 597                 if (unlikely(r->reloc_bo_offset + 4 >
 598                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 599                         NV_ERROR(cli, "reloc outside of bo\n");
 600                         ret = -EINVAL;
 601                         break;
 602                 }
 603
 604                 if (!nvbo->kmap.virtual) {
 605                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 606                                           &nvbo->kmap);
 607                         if (ret) {
 608                                 NV_ERROR(cli, "failed kmap for reloc\n");
 609                                 break;
 610                         }
 611                         nvbo->validate_mapped = true;
 612                 }
 613
 614                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 615                         data = b->presumed.offset + r->data;
 616                 else
 617                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 618                         data = (b->presumed.offset + r->data) >> 32;
 619                 else
 620                         data = r->data;
 621
 622                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 623                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 624                                 data |= r->tor;
 625                         else
 626                                 data |= r->vor;
 627                 }
 628
 629                 spin_lock(&nvbo->bo.bdev->fence_lock);
 630                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 631                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 632                 if (ret) {
 633                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 634                         break;
 635                 }
 636
 637                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 638         }
 639
 640         kfree(reloc);
 641         return ret;
 642 }
 643
 644 int
 645 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 646                           struct drm_file *file_priv)
 647 {
 648         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 649         struct nouveau_cli *cli = nouveau_cli(file_priv);
 650         struct nouveau_abi16_chan *temp;
 651         struct nouveau_drm *drm = nouveau_drm(dev);
 652         struct drm_nouveau_gem_pushbuf *req = data;
 653         struct drm_nouveau_gem_pushbuf_push *push;
 654         struct drm_nouveau_gem_pushbuf_bo *bo;
 655         struct nouveau_channel *chan = NULL;
 656         struct validate_op op;
 657         struct nouveau_fence *fence = NULL;
 658         int i, j, ret = 0, do_reloc = 0;
 659
 660         if (unlikely(!abi16))
 661                 return -ENOMEM;
 662
 663         list_for_each_entry(temp, &abi16->channels, head) {
 664                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 665                         chan = temp->chan;
 666                         break;
 667                 }
 668         }
 669
 670         if (!chan)
 671                 return nouveau_abi16_put(abi16, -ENOENT);
 672
 673         req->vram_available = drm->gem.vram_available;
 674         req->gart_available = drm->gem.gart_available;
 675         if (unlikely(req->nr_push == 0))
 676                 goto out_next;
 677
 678         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 679                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 680                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 681                 return nouveau_abi16_put(abi16, -EINVAL);
 682         }
 683
 684         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 685                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 686                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 687                 return nouveau_abi16_put(abi16, -EINVAL);
 688         }
 689
 690         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 691                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 692                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 693                 return nouveau_abi16_put(abi16, -EINVAL);
 694         }
 695
 696         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 697         if (IS_ERR(push))
 698                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 699
 700         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 701         if (IS_ERR(bo)) {
 702                 kfree(push);
 703                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 704         }
 705
 706         /* Ensure all push buffers are on validate list */
 707         for (i = 0; i < req->nr_push; i++) {
 708                 if (push[i].bo_index >= req->nr_buffers) {
 709                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 710                         ret = -EINVAL;
 711                         goto out_prevalid;
 712                 }
 713         }
 714
 715         /* Validate buffer list */
 716         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 717                                            req->nr_buffers, &op, &do_reloc);
 718         if (ret) {
 719                 if (ret != -ERESTARTSYS)
 720                         NV_ERROR(cli, "validate: %d\n", ret);
 721                 goto out_prevalid;
 722         }
 723
 724         /* Apply any relocations that are required */
 725         if (do_reloc) {
 726                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 727                 if (ret) {
 728                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 729                         goto out;
 730                 }
 731         }
 732
 733         if (chan->dma.ib_max) {
 734                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 735                 if (ret) {
 736                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 737                         goto out;
 738                 }
 739
 740                 for (i = 0; i < req->nr_push; i++) {
 741                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 742                                 bo[push[i].bo_index].user_priv;
 743
 744                         nv50_dma_push(chan, nvbo, push[i].offset,
 745                                       push[i].length);
 746                 }
 747         } else
 748         if (nv_device(drm->device)->chipset >= 0x25) {
 749                 ret = RING_SPACE(chan, req->nr_push * 2);
 750                 if (ret) {
 751                         NV_ERROR(cli, "cal_space: %d\n", ret);
 752                         goto out;
 753                 }
 754
 755                 for (i = 0; i < req->nr_push; i++) {
 756                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 757                                 bo[push[i].bo_index].user_priv;
 758
 759                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 760                         OUT_RING(chan, 0);
 761                 }
 762         } else {
 763                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 764                 if (ret) {
 765                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 766                         goto out;
 767                 }
 768
 769                 for (i = 0; i < req->nr_push; i++) {
 770                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 771                                 bo[push[i].bo_index].user_priv;
 772                         uint32_t cmd;
 773
 774                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 775                         cmd |= 0x20000000;
 776                         if (unlikely(cmd != req->suffix0)) {
 777                                 if (!nvbo->kmap.virtual) {
 778                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 779                                                           nvbo->bo.mem.
 780                                                           num_pages,
 781                                                           &nvbo->kmap);
 782                                         if (ret) {
 783                                                 WIND_RING(chan);
 784                                                 goto out;
 785                                         }
 786                                         nvbo->validate_mapped = true;
 787                                 }
 788
 789                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 790                                                 push[i].length - 8) / 4, cmd);
 791                         }
 792
 793                         OUT_RING(chan, 0x20000000 |
 794                                       (nvbo->bo.offset + push[i].offset));
 795                         OUT_RING(chan, 0);
 796                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 797                                 OUT_RING(chan, 0);
 798                 }
 799         }
 800
 801         ret = nouveau_fence_new(chan, false, &fence);
 802         if (ret) {
 803                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 804                 WIND_RING(chan);
 805                 goto out;
 806         }
 807
 808 out:
 809         validate_fini(&op, fence);
 810         nouveau_fence_unref(&fence);
 811
 812 out_prevalid:
 813         kfree(bo);
 814         kfree(push);
 815
 816 out_next:
 817         if (chan->dma.ib_max) {
 818                 req->suffix0 = 0x00000000;
 819                 req->suffix1 = 0x00000000;
 820         } else
 821         if (nv_device(drm->device)->chipset >= 0x25) {
 822                 req->suffix0 = 0x00020000;
 823                 req->suffix1 = 0x00000000;
 824         } else {
 825                 req->suffix0 = 0x20000000 |
 826                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 827                 req->suffix1 = 0x00000000;
 828         }
 829
 830         return nouveau_abi16_put(abi16, ret);
 831 }
 832
 833 static inline uint32_t
 834 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 835 {
 836         uint32_t flags = 0;
 837
 838         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 839                 flags |= TTM_PL_FLAG_VRAM;
 840         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 841                 flags |= TTM_PL_FLAG_TT;
 842
 843         return flags;
 844 }
 845
 846 int
 847 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 848                            struct drm_file *file_priv)
 849 {
 850         struct drm_nouveau_gem_cpu_prep *req = data;
 851         struct drm_gem_object *gem;
 852         struct nouveau_bo *nvbo;
 853         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 854         int ret = -EINVAL;
 855
 856         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 857         if (!gem)
 858                 return -ENOENT;
 859         nvbo = nouveau_gem_object(gem);
 860
 861         spin_lock(&nvbo->bo.bdev->fence_lock);
 862         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 863         spin_unlock(&nvbo->bo.bdev->fence_lock);
 864         drm_gem_object_unreference_unlocked(gem);
 865         return ret;
 866 }
 867
 868 int
 869 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 870                            struct drm_file *file_priv)
 871 {
 872         return 0;
 873 }
 874
 875 int
 876 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 877                        struct drm_file *file_priv)
 878 {
 879         struct drm_nouveau_gem_info *req = data;
 880         struct drm_gem_object *gem;
 881         int ret;
 882
 883         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 884         if (!gem)
 885                 return -ENOENT;
 886
 887         ret = nouveau_gem_info(file_priv, gem, req);
 888         drm_gem_object_unreference_unlocked(gem);
 889         return ret;
 890 }
 891