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 "nouveau_drv.h"
  28 #include "nouveau_dma.h"
  29 #include "nouveau_fence.h"
  30 #include "nouveau_abi16.h"
  31
  32 #include "nouveau_ttm.h"
  33 #include "nouveau_gem.h"
  34
  35 void
  36 nouveau_gem_object_del(struct drm_gem_object *gem)
  37 {
  38         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  39         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  40         struct ttm_buffer_object *bo = &nvbo->bo;
  41         struct device *dev = drm->dev->dev;
  42         int ret;
  43
  44         ret = pm_runtime_get_sync(dev);
  45         if (WARN_ON(ret < 0 && ret != -EACCES))
  46                 return;
  47
  48         if (gem->import_attach)
  49                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  50
  51         drm_gem_object_release(gem);
  52
  53         /* reset filp so nouveau_bo_del_ttm() can test for it */
  54         gem->filp = NULL;
  55         ttm_bo_unref(&bo);
  56
  57         pm_runtime_mark_last_busy(dev);
  58         pm_runtime_put_autosuspend(dev);
  59 }
  60
  61 int
  62 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  63 {
  64         struct nouveau_cli *cli = nouveau_cli(file_priv);
  65         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  66         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  67         struct nvkm_vma *vma;
  68         struct device *dev = drm->dev->dev;
  69         int ret;
  70
  71         if (!cli->vm)
  72                 return 0;
  73
  74         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  75         if (ret)
  76                 return ret;
  77
  78         vma = nouveau_bo_vma_find(nvbo, cli->vm);
  79         if (!vma) {
  80                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  81                 if (!vma) {
  82                         ret = -ENOMEM;
  83                         goto out;
  84                 }
  85
  86                 ret = pm_runtime_get_sync(dev);
  87                 if (ret < 0 && ret != -EACCES) {
  88                         kfree(vma);
  89                         goto out;
  90                 }
  91
  92                 ret = nouveau_bo_vma_add(nvbo, cli->vm, vma);
  93                 if (ret)
  94                         kfree(vma);
  95
  96                 pm_runtime_mark_last_busy(dev);
  97                 pm_runtime_put_autosuspend(dev);
  98         } else {
  99                 vma->refcount++;
 100         }
 101
 102 out:
 103         ttm_bo_unreserve(&nvbo->bo);
 104         return ret;
 105 }
 106
 107 static void
 108 nouveau_gem_object_delete(void *data)
 109 {
 110         struct nvkm_vma *vma = data;
 111         nvkm_vm_unmap(vma);
 112         nvkm_vm_put(vma);
 113         kfree(vma);
 114 }
 115
 116 static void
 117 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nvkm_vma *vma)
 118 {
 119         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 120         struct reservation_object *resv = nvbo->bo.resv;
 121         struct reservation_object_list *fobj;
 122         struct fence *fence = NULL;
 123
 124         fobj = reservation_object_get_list(resv);
 125
 126         list_del(&vma->head);
 127
 128         if (fobj && fobj->shared_count > 1)
 129                 ttm_bo_wait(&nvbo->bo, false, false);
 130         else if (fobj && fobj->shared_count == 1)
 131                 fence = rcu_dereference_protected(fobj->shared[0],
 132                                                 reservation_object_held(resv));
 133         else
 134                 fence = reservation_object_get_excl(nvbo->bo.resv);
 135
 136         if (fence && mapped) {
 137                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 138         } else {
 139                 if (mapped)
 140                         nvkm_vm_unmap(vma);
 141                 nvkm_vm_put(vma);
 142                 kfree(vma);
 143         }
 144 }
 145
 146 void
 147 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 148 {
 149         struct nouveau_cli *cli = nouveau_cli(file_priv);
 150         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 151         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 152         struct device *dev = drm->dev->dev;
 153         struct nvkm_vma *vma;
 154         int ret;
 155
 156         if (!cli->vm)
 157                 return;
 158
 159         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 160         if (ret)
 161                 return;
 162
 163         vma = nouveau_bo_vma_find(nvbo, cli->vm);
 164         if (vma) {
 165                 if (--vma->refcount == 0) {
 166                         ret = pm_runtime_get_sync(dev);
 167                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 168                                 nouveau_gem_object_unmap(nvbo, vma);
 169                                 pm_runtime_mark_last_busy(dev);
 170                                 pm_runtime_put_autosuspend(dev);
 171                         }
 172                 }
 173         }
 174         ttm_bo_unreserve(&nvbo->bo);
 175 }
 176
 177 int
 178 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 179                 uint32_t tile_mode, uint32_t tile_flags,
 180                 struct nouveau_bo **pnvbo)
 181 {
 182         struct nouveau_drm *drm = nouveau_drm(dev);
 183         struct nouveau_bo *nvbo;
 184         u32 flags = 0;
 185         int ret;
 186
 187         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 188                 flags |= TTM_PL_FLAG_VRAM;
 189         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 190                 flags |= TTM_PL_FLAG_TT;
 191         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 192                 flags |= TTM_PL_FLAG_SYSTEM;
 193
 194         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 195                 flags |= TTM_PL_FLAG_UNCACHED;
 196
 197         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 198                              tile_flags, NULL, NULL, pnvbo);
 199         if (ret)
 200                 return ret;
 201         nvbo = *pnvbo;
 202
 203         /* we restrict allowed domains on nv50+ to only the types
 204          * that were requested at creation time.  not possibly on
 205          * earlier chips without busting the ABI.
 206          */
 207         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 208                               NOUVEAU_GEM_DOMAIN_GART;
 209         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 210                 nvbo->valid_domains &= domain;
 211
 212         /* Initialize the embedded gem-object. We return a single gem-reference
 213          * to the caller, instead of a normal nouveau_bo ttm reference. */
 214         ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
 215         if (ret) {
 216                 nouveau_bo_ref(NULL, pnvbo);
 217                 return -ENOMEM;
 218         }
 219
 220         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 221         return 0;
 222 }
 223
 224 static int
 225 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 226                  struct drm_nouveau_gem_info *rep)
 227 {
 228         struct nouveau_cli *cli = nouveau_cli(file_priv);
 229         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 230         struct nvkm_vma *vma;
 231
 232         if (is_power_of_2(nvbo->valid_domains))
 233                 rep->domain = nvbo->valid_domains;
 234         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 235                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 236         else
 237                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 238         rep->offset = nvbo->bo.offset;
 239         if (cli->vm) {
 240                 vma = nouveau_bo_vma_find(nvbo, cli->vm);
 241                 if (!vma)
 242                         return -EINVAL;
 243
 244                 rep->offset = vma->offset;
 245         }
 246
 247         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 248         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 249         rep->tile_mode = nvbo->tile_mode;
 250         rep->tile_flags = nvbo->tile_flags;
 251         return 0;
 252 }
 253
 254 int
 255 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 256                       struct drm_file *file_priv)
 257 {
 258         struct nouveau_drm *drm = nouveau_drm(dev);
 259         struct nouveau_cli *cli = nouveau_cli(file_priv);
 260         struct nvkm_fb *fb = nvxx_fb(&drm->device);
 261         struct drm_nouveau_gem_new *req = data;
 262         struct nouveau_bo *nvbo = NULL;
 263         int ret = 0;
 264
 265         if (!nvkm_fb_memtype_valid(fb, req->info.tile_flags)) {
 266                 NV_PRINTK(err, cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 267                 return -EINVAL;
 268         }
 269
 270         ret = nouveau_gem_new(dev, req->info.size, req->align,
 271                               req->info.domain, req->info.tile_mode,
 272                               req->info.tile_flags, &nvbo);
 273         if (ret)
 274                 return ret;
 275
 276         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 277         if (ret == 0) {
 278                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 279                 if (ret)
 280                         drm_gem_handle_delete(file_priv, req->info.handle);
 281         }
 282
 283         /* drop reference from allocate - handle holds it now */
 284         drm_gem_object_unreference_unlocked(&nvbo->gem);
 285         return ret;
 286 }
 287
 288 static int
 289 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 290                        uint32_t write_domains, uint32_t valid_domains)
 291 {
 292         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 293         struct ttm_buffer_object *bo = &nvbo->bo;
 294         uint32_t domains = valid_domains & nvbo->valid_domains &
 295                 (write_domains ? write_domains : read_domains);
 296         uint32_t pref_flags = 0, valid_flags = 0;
 297
 298         if (!domains)
 299                 return -EINVAL;
 300
 301         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 302                 valid_flags |= TTM_PL_FLAG_VRAM;
 303
 304         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 305                 valid_flags |= TTM_PL_FLAG_TT;
 306
 307         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 308             bo->mem.mem_type == TTM_PL_VRAM)
 309                 pref_flags |= TTM_PL_FLAG_VRAM;
 310
 311         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 312                  bo->mem.mem_type == TTM_PL_TT)
 313                 pref_flags |= TTM_PL_FLAG_TT;
 314
 315         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 316                 pref_flags |= TTM_PL_FLAG_VRAM;
 317
 318         else
 319                 pref_flags |= TTM_PL_FLAG_TT;
 320
 321         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 322
 323         return 0;
 324 }
 325
 326 struct validate_op {
 327         struct list_head list;
 328         struct ww_acquire_ctx ticket;
 329 };
 330
 331 static void
 332 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence,
 333                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 334 {
 335         struct nouveau_bo *nvbo;
 336         struct drm_nouveau_gem_pushbuf_bo *b;
 337
 338         while (!list_empty(&op->list)) {
 339                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 340                 b = &pbbo[nvbo->pbbo_index];
 341
 342                 if (likely(fence))
 343                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 344
 345                 if (unlikely(nvbo->validate_mapped)) {
 346                         ttm_bo_kunmap(&nvbo->kmap);
 347                         nvbo->validate_mapped = false;
 348                 }
 349
 350                 list_del(&nvbo->entry);
 351                 nvbo->reserved_by = NULL;
 352                 ttm_bo_unreserve_ticket(&nvbo->bo, &op->ticket);
 353                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 354         }
 355 }
 356
 357 static void
 358 validate_fini(struct validate_op *op, struct nouveau_fence *fence,
 359               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 360 {
 361         validate_fini_no_ticket(op, fence, pbbo);
 362         ww_acquire_fini(&op->ticket);
 363 }
 364
 365 static int
 366 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 367               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 368               int nr_buffers, struct validate_op *op)
 369 {
 370         struct nouveau_cli *cli = nouveau_cli(file_priv);
 371         int trycnt = 0;
 372         int ret, i;
 373         struct nouveau_bo *res_bo = NULL;
 374         LIST_HEAD(gart_list);
 375         LIST_HEAD(vram_list);
 376         LIST_HEAD(both_list);
 377
 378         ww_acquire_init(&op->ticket, &reservation_ww_class);
 379 retry:
 380         if (++trycnt > 100000) {
 381                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 382                 return -EINVAL;
 383         }
 384
 385         for (i = 0; i < nr_buffers; i++) {
 386                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 387                 struct drm_gem_object *gem;
 388                 struct nouveau_bo *nvbo;
 389
 390                 gem = drm_gem_object_lookup(file_priv, b->handle);
 391                 if (!gem) {
 392                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 393                         ret = -ENOENT;
 394                         break;
 395                 }
 396                 nvbo = nouveau_gem_object(gem);
 397                 if (nvbo == res_bo) {
 398                         res_bo = NULL;
 399                         drm_gem_object_unreference_unlocked(gem);
 400                         continue;
 401                 }
 402
 403                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 404                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 405                                       "validation list\n", b->handle);
 406                         drm_gem_object_unreference_unlocked(gem);
 407                         ret = -EINVAL;
 408                         break;
 409                 }
 410
 411                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 412                 if (ret) {
 413                         list_splice_tail_init(&vram_list, &op->list);
 414                         list_splice_tail_init(&gart_list, &op->list);
 415                         list_splice_tail_init(&both_list, &op->list);
 416                         validate_fini_no_ticket(op, NULL, NULL);
 417                         if (unlikely(ret == -EDEADLK)) {
 418                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 419                                                               &op->ticket);
 420                                 if (!ret)
 421                                         res_bo = nvbo;
 422                         }
 423                         if (unlikely(ret)) {
 424                                 if (ret != -ERESTARTSYS)
 425                                         NV_PRINTK(err, cli, "fail reserve\n");
 426                                 break;
 427                         }
 428                 }
 429
 430                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 431                 nvbo->reserved_by = file_priv;
 432                 nvbo->pbbo_index = i;
 433                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 434                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 435                         list_add_tail(&nvbo->entry, &both_list);
 436                 else
 437                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 438                         list_add_tail(&nvbo->entry, &vram_list);
 439                 else
 440                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 441                         list_add_tail(&nvbo->entry, &gart_list);
 442                 else {
 443                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 444                                  b->valid_domains);
 445                         list_add_tail(&nvbo->entry, &both_list);
 446                         ret = -EINVAL;
 447                         break;
 448                 }
 449                 if (nvbo == res_bo)
 450                         goto retry;
 451         }
 452
 453         ww_acquire_done(&op->ticket);
 454         list_splice_tail(&vram_list, &op->list);
 455         list_splice_tail(&gart_list, &op->list);
 456         list_splice_tail(&both_list, &op->list);
 457         if (ret)
 458                 validate_fini(op, NULL, NULL);
 459         return ret;
 460
 461 }
 462
 463 static int
 464 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 465               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 466               uint64_t user_pbbo_ptr)
 467 {
 468         struct nouveau_drm *drm = chan->drm;
 469         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 470                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 471         struct nouveau_bo *nvbo;
 472         int ret, relocs = 0;
 473
 474         list_for_each_entry(nvbo, list, entry) {
 475                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 476
 477                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 478                                              b->write_domains,
 479                                              b->valid_domains);
 480                 if (unlikely(ret)) {
 481                         NV_PRINTK(err, cli, "fail set_domain\n");
 482                         return ret;
 483                 }
 484
 485                 ret = nouveau_bo_validate(nvbo, true, false);
 486                 if (unlikely(ret)) {
 487                         if (ret != -ERESTARTSYS)
 488                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 489                         return ret;
 490                 }
 491
 492                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 493                 if (unlikely(ret)) {
 494                         if (ret != -ERESTARTSYS)
 495                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 496                         return ret;
 497                 }
 498
 499                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 500                         if (nvbo->bo.offset == b->presumed.offset &&
 501                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 502                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 503                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 504                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 505                                 continue;
 506
 507                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 508                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 509                         else
 510                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 511                         b->presumed.offset = nvbo->bo.offset;
 512                         b->presumed.valid = 0;
 513                         relocs++;
 514
 515                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 516                                              &b->presumed, sizeof(b->presumed)))
 517                                 return -EFAULT;
 518                 }
 519         }
 520
 521         return relocs;
 522 }
 523
 524 static int
 525 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 526                              struct drm_file *file_priv,
 527                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 528                              uint64_t user_buffers, int nr_buffers,
 529                              struct validate_op *op, int *apply_relocs)
 530 {
 531         struct nouveau_cli *cli = nouveau_cli(file_priv);
 532         int ret;
 533
 534         INIT_LIST_HEAD(&op->list);
 535
 536         if (nr_buffers == 0)
 537                 return 0;
 538
 539         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 540         if (unlikely(ret)) {
 541                 if (ret != -ERESTARTSYS)
 542                         NV_PRINTK(err, cli, "validate_init\n");
 543                 return ret;
 544         }
 545
 546         ret = validate_list(chan, cli, &op->list, pbbo, user_buffers);
 547         if (unlikely(ret < 0)) {
 548                 if (ret != -ERESTARTSYS)
 549                         NV_PRINTK(err, cli, "validating bo list\n");
 550                 validate_fini(op, NULL, NULL);
 551                 return ret;
 552         }
 553         *apply_relocs = ret;
 554         return 0;
 555 }
 556
 557 static inline void
 558 u_free(void *addr)
 559 {
 560         kvfree(addr);
 561 }
 562
 563 static inline void *
 564 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 565 {
 566         void *mem;
 567         void __user *userptr = (void __force __user *)(uintptr_t)user;
 568
 569         size *= nmemb;
 570
 571         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 572         if (!mem)
 573                 mem = vmalloc(size);
 574         if (!mem)
 575                 return ERR_PTR(-ENOMEM);
 576
 577         if (copy_from_user(mem, userptr, size)) {
 578                 u_free(mem);
 579                 return ERR_PTR(-EFAULT);
 580         }
 581
 582         return mem;
 583 }
 584
 585 static int
 586 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 587                                 struct drm_nouveau_gem_pushbuf *req,
 588                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 589 {
 590         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 591         int ret = 0;
 592         unsigned i;
 593
 594         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 595         if (IS_ERR(reloc))
 596                 return PTR_ERR(reloc);
 597
 598         for (i = 0; i < req->nr_relocs; i++) {
 599                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 600                 struct drm_nouveau_gem_pushbuf_bo *b;
 601                 struct nouveau_bo *nvbo;
 602                 uint32_t data;
 603
 604                 if (unlikely(r->bo_index > req->nr_buffers)) {
 605                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 606                         ret = -EINVAL;
 607                         break;
 608                 }
 609
 610                 b = &bo[r->bo_index];
 611                 if (b->presumed.valid)
 612                         continue;
 613
 614                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 615                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 616                         ret = -EINVAL;
 617                         break;
 618                 }
 619                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 620
 621                 if (unlikely(r->reloc_bo_offset + 4 >
 622                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 623                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 624                         ret = -EINVAL;
 625                         break;
 626                 }
 627
 628                 if (!nvbo->kmap.virtual) {
 629                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 630                                           &nvbo->kmap);
 631                         if (ret) {
 632                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 633                                 break;
 634                         }
 635                         nvbo->validate_mapped = true;
 636                 }
 637
 638                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 639                         data = b->presumed.offset + r->data;
 640                 else
 641                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 642                         data = (b->presumed.offset + r->data) >> 32;
 643                 else
 644                         data = r->data;
 645
 646                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 647                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 648                                 data |= r->tor;
 649                         else
 650                                 data |= r->vor;
 651                 }
 652
 653                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 654                 if (ret) {
 655                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 656                         break;
 657                 }
 658
 659                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 660         }
 661
 662         u_free(reloc);
 663         return ret;
 664 }
 665
 666 int
 667 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 668                           struct drm_file *file_priv)
 669 {
 670         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 671         struct nouveau_cli *cli = nouveau_cli(file_priv);
 672         struct nouveau_abi16_chan *temp;
 673         struct nouveau_drm *drm = nouveau_drm(dev);
 674         struct drm_nouveau_gem_pushbuf *req = data;
 675         struct drm_nouveau_gem_pushbuf_push *push;
 676         struct drm_nouveau_gem_pushbuf_bo *bo;
 677         struct nouveau_channel *chan = NULL;
 678         struct validate_op op;
 679         struct nouveau_fence *fence = NULL;
 680         int i, j, ret = 0, do_reloc = 0;
 681
 682         if (unlikely(!abi16))
 683                 return -ENOMEM;
 684
 685         list_for_each_entry(temp, &abi16->channels, head) {
 686                 if (temp->chan->chid == req->channel) {
 687                         chan = temp->chan;
 688                         break;
 689                 }
 690         }
 691
 692         if (!chan)
 693                 return nouveau_abi16_put(abi16, -ENOENT);
 694
 695         req->vram_available = drm->gem.vram_available;
 696         req->gart_available = drm->gem.gart_available;
 697         if (unlikely(req->nr_push == 0))
 698                 goto out_next;
 699
 700         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 701                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 702                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 703                 return nouveau_abi16_put(abi16, -EINVAL);
 704         }
 705
 706         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 707                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 708                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 709                 return nouveau_abi16_put(abi16, -EINVAL);
 710         }
 711
 712         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 713                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 714                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 715                 return nouveau_abi16_put(abi16, -EINVAL);
 716         }
 717
 718         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 719         if (IS_ERR(push))
 720                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 721
 722         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 723         if (IS_ERR(bo)) {
 724                 u_free(push);
 725                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 726         }
 727
 728         /* Ensure all push buffers are on validate list */
 729         for (i = 0; i < req->nr_push; i++) {
 730                 if (push[i].bo_index >= req->nr_buffers) {
 731                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 732                         ret = -EINVAL;
 733                         goto out_prevalid;
 734                 }
 735         }
 736
 737         /* Validate buffer list */
 738         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 739                                            req->nr_buffers, &op, &do_reloc);
 740         if (ret) {
 741                 if (ret != -ERESTARTSYS)
 742                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 743                 goto out_prevalid;
 744         }
 745
 746         /* Apply any relocations that are required */
 747         if (do_reloc) {
 748                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 749                 if (ret) {
 750                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 751                         goto out;
 752                 }
 753         }
 754
 755         if (chan->dma.ib_max) {
 756                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 757                 if (ret) {
 758                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 759                         goto out;
 760                 }
 761
 762                 for (i = 0; i < req->nr_push; i++) {
 763                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 764                                 bo[push[i].bo_index].user_priv;
 765
 766                         nv50_dma_push(chan, nvbo, push[i].offset,
 767                                       push[i].length);
 768                 }
 769         } else
 770         if (drm->device.info.chipset >= 0x25) {
 771                 ret = RING_SPACE(chan, req->nr_push * 2);
 772                 if (ret) {
 773                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 774                         goto out;
 775                 }
 776
 777                 for (i = 0; i < req->nr_push; i++) {
 778                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 779                                 bo[push[i].bo_index].user_priv;
 780
 781                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 782                         OUT_RING(chan, 0);
 783                 }
 784         } else {
 785                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 786                 if (ret) {
 787                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 788                         goto out;
 789                 }
 790
 791                 for (i = 0; i < req->nr_push; i++) {
 792                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 793                                 bo[push[i].bo_index].user_priv;
 794                         uint32_t cmd;
 795
 796                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 797                         cmd |= 0x20000000;
 798                         if (unlikely(cmd != req->suffix0)) {
 799                                 if (!nvbo->kmap.virtual) {
 800                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 801                                                           nvbo->bo.mem.
 802                                                           num_pages,
 803                                                           &nvbo->kmap);
 804                                         if (ret) {
 805                                                 WIND_RING(chan);
 806                                                 goto out;
 807                                         }
 808                                         nvbo->validate_mapped = true;
 809                                 }
 810
 811                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 812                                                 push[i].length - 8) / 4, cmd);
 813                         }
 814
 815                         OUT_RING(chan, 0x20000000 |
 816                                       (nvbo->bo.offset + push[i].offset));
 817                         OUT_RING(chan, 0);
 818                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 819                                 OUT_RING(chan, 0);
 820                 }
 821         }
 822
 823         ret = nouveau_fence_new(chan, false, &fence);
 824         if (ret) {
 825                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 826                 WIND_RING(chan);
 827                 goto out;
 828         }
 829
 830 out:
 831         validate_fini(&op, fence, bo);
 832         nouveau_fence_unref(&fence);
 833
 834 out_prevalid:
 835         u_free(bo);
 836         u_free(push);
 837
 838 out_next:
 839         if (chan->dma.ib_max) {
 840                 req->suffix0 = 0x00000000;
 841                 req->suffix1 = 0x00000000;
 842         } else
 843         if (drm->device.info.chipset >= 0x25) {
 844                 req->suffix0 = 0x00020000;
 845                 req->suffix1 = 0x00000000;
 846         } else {
 847                 req->suffix0 = 0x20000000 |
 848                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 849                 req->suffix1 = 0x00000000;
 850         }
 851
 852         return nouveau_abi16_put(abi16, ret);
 853 }
 854
 855 int
 856 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 857                            struct drm_file *file_priv)
 858 {
 859         struct drm_nouveau_gem_cpu_prep *req = data;
 860         struct drm_gem_object *gem;
 861         struct nouveau_bo *nvbo;
 862         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 863         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 864         int ret;
 865
 866         gem = drm_gem_object_lookup(file_priv, req->handle);
 867         if (!gem)
 868                 return -ENOENT;
 869         nvbo = nouveau_gem_object(gem);
 870
 871         if (no_wait)
 872                 ret = reservation_object_test_signaled_rcu(nvbo->bo.resv, write) ? 0 : -EBUSY;
 873         else {
 874                 long lret;
 875
 876                 lret = reservation_object_wait_timeout_rcu(nvbo->bo.resv, write, true, 30 * HZ);
 877                 if (!lret)
 878                         ret = -EBUSY;
 879                 else if (lret > 0)
 880                         ret = 0;
 881                 else
 882                         ret = lret;
 883         }
 884         nouveau_bo_sync_for_cpu(nvbo);
 885         drm_gem_object_unreference_unlocked(gem);
 886
 887         return ret;
 888 }
 889
 890 int
 891 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 892                            struct drm_file *file_priv)
 893 {
 894         struct drm_nouveau_gem_cpu_fini *req = data;
 895         struct drm_gem_object *gem;
 896         struct nouveau_bo *nvbo;
 897
 898         gem = drm_gem_object_lookup(file_priv, req->handle);
 899         if (!gem)
 900                 return -ENOENT;
 901         nvbo = nouveau_gem_object(gem);
 902
 903         nouveau_bo_sync_for_device(nvbo);
 904         drm_gem_object_unreference_unlocked(gem);
 905         return 0;
 906 }
 907
 908 int
 909 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 910                        struct drm_file *file_priv)
 911 {
 912         struct drm_nouveau_gem_info *req = data;
 913         struct drm_gem_object *gem;
 914         int ret;
 915
 916         gem = drm_gem_object_lookup(file_priv, req->handle);
 917         if (!gem)
 918                 return -ENOENT;
 919
 920         ret = nouveau_gem_info(file_priv, gem, req);
 921         drm_gem_object_unreference_unlocked(gem);
 922         return ret;
 923 }
 924