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 void
  38 nouveau_gem_object_del(struct drm_gem_object *gem)
  39 {
  40         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  41         struct ttm_buffer_object *bo = &nvbo->bo;
  42
  43         if (gem->import_attach)
  44                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  45
  46         drm_gem_object_release(gem);
  47
  48         /* reset filp so nouveau_bo_del_ttm() can test for it */
  49         gem->filp = NULL;
  50         ttm_bo_unref(&bo);
  51 }
  52
  53 int
  54 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  55 {
  56         struct nouveau_cli *cli = nouveau_cli(file_priv);
  57         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  58         struct nouveau_vma *vma;
  59         int ret;
  60
  61         if (!cli->base.vm)
  62                 return 0;
  63
  64         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  65         if (ret)
  66                 return ret;
  67
  68         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  69         if (!vma) {
  70                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  71                 if (!vma) {
  72                         ret = -ENOMEM;
  73                         goto out;
  74                 }
  75
  76                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  77                 if (ret) {
  78                         kfree(vma);
  79                         goto out;
  80                 }
  81         } else {
  82                 vma->refcount++;
  83         }
  84
  85 out:
  86         ttm_bo_unreserve(&nvbo->bo);
  87         return ret;
  88 }
  89
  90 static void
  91 nouveau_gem_object_delete(void *data)
  92 {
  93         struct nouveau_vma *vma = data;
  94         nouveau_vm_unmap(vma);
  95         nouveau_vm_put(vma);
  96         kfree(vma);
  97 }
  98
  99 static void
 100 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 101 {
 102         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 103         struct nouveau_fence *fence = NULL;
 104
 105         list_del(&vma->head);
 106
 107         if (mapped) {
 108                 spin_lock(&nvbo->bo.bdev->fence_lock);
 109                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 110                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 111         }
 112
 113         if (fence) {
 114                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 115         } else {
 116                 if (mapped)
 117                         nouveau_vm_unmap(vma);
 118                 nouveau_vm_put(vma);
 119                 kfree(vma);
 120         }
 121         nouveau_fence_unref(&fence);
 122 }
 123
 124 void
 125 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 126 {
 127         struct nouveau_cli *cli = nouveau_cli(file_priv);
 128         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 129         struct nouveau_vma *vma;
 130         int ret;
 131
 132         if (!cli->base.vm)
 133                 return;
 134
 135         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 136         if (ret)
 137                 return;
 138
 139         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 140         if (vma) {
 141                 if (--vma->refcount == 0)
 142                         nouveau_gem_object_unmap(nvbo, vma);
 143         }
 144         ttm_bo_unreserve(&nvbo->bo);
 145 }
 146
 147 int
 148 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 149                 uint32_t tile_mode, uint32_t tile_flags,
 150                 struct nouveau_bo **pnvbo)
 151 {
 152         struct nouveau_drm *drm = nouveau_drm(dev);
 153         struct nouveau_bo *nvbo;
 154         u32 flags = 0;
 155         int ret;
 156
 157         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 158                 flags |= TTM_PL_FLAG_VRAM;
 159         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 160                 flags |= TTM_PL_FLAG_TT;
 161         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 162                 flags |= TTM_PL_FLAG_SYSTEM;
 163
 164         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 165                              tile_flags, NULL, pnvbo);
 166         if (ret)
 167                 return ret;
 168         nvbo = *pnvbo;
 169
 170         /* we restrict allowed domains on nv50+ to only the types
 171          * that were requested at creation time.  not possibly on
 172          * earlier chips without busting the ABI.
 173          */
 174         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 175                               NOUVEAU_GEM_DOMAIN_GART;
 176         if (nv_device(drm->device)->card_type >= NV_50)
 177                 nvbo->valid_domains &= domain;
 178
 179         /* Initialize the embedded gem-object. We return a single gem-reference
 180          * to the caller, instead of a normal nouveau_bo ttm reference. */
 181         ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
 182         if (ret) {
 183                 nouveau_bo_ref(NULL, pnvbo);
 184                 return -ENOMEM;
 185         }
 186
 187         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 188         return 0;
 189 }
 190
 191 static int
 192 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 193                  struct drm_nouveau_gem_info *rep)
 194 {
 195         struct nouveau_cli *cli = nouveau_cli(file_priv);
 196         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 197         struct nouveau_vma *vma;
 198
 199         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 200                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 201         else
 202                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 203
 204         rep->offset = nvbo->bo.offset;
 205         if (cli->base.vm) {
 206                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 207                 if (!vma)
 208                         return -EINVAL;
 209
 210                 rep->offset = vma->offset;
 211         }
 212
 213         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 214         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 215         rep->tile_mode = nvbo->tile_mode;
 216         rep->tile_flags = nvbo->tile_flags;
 217         return 0;
 218 }
 219
 220 int
 221 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 222                       struct drm_file *file_priv)
 223 {
 224         struct nouveau_drm *drm = nouveau_drm(dev);
 225         struct nouveau_cli *cli = nouveau_cli(file_priv);
 226         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 227         struct drm_nouveau_gem_new *req = data;
 228         struct nouveau_bo *nvbo = NULL;
 229         int ret = 0;
 230
 231         drm->ttm.bdev.dev_mapping = drm->dev->anon_inode->i_mapping;
 232
 233         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 234                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 235                 return -EINVAL;
 236         }
 237
 238         ret = nouveau_gem_new(dev, req->info.size, req->align,
 239                               req->info.domain, req->info.tile_mode,
 240                               req->info.tile_flags, &nvbo);
 241         if (ret)
 242                 return ret;
 243
 244         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 245         if (ret == 0) {
 246                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 247                 if (ret)
 248                         drm_gem_handle_delete(file_priv, req->info.handle);
 249         }
 250
 251         /* drop reference from allocate - handle holds it now */
 252         drm_gem_object_unreference_unlocked(&nvbo->gem);
 253         return ret;
 254 }
 255
 256 static int
 257 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 258                        uint32_t write_domains, uint32_t valid_domains)
 259 {
 260         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 261         struct ttm_buffer_object *bo = &nvbo->bo;
 262         uint32_t domains = valid_domains & nvbo->valid_domains &
 263                 (write_domains ? write_domains : read_domains);
 264         uint32_t pref_flags = 0, valid_flags = 0;
 265
 266         if (!domains)
 267                 return -EINVAL;
 268
 269         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 270                 valid_flags |= TTM_PL_FLAG_VRAM;
 271
 272         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 273                 valid_flags |= TTM_PL_FLAG_TT;
 274
 275         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 276             bo->mem.mem_type == TTM_PL_VRAM)
 277                 pref_flags |= TTM_PL_FLAG_VRAM;
 278
 279         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 280                  bo->mem.mem_type == TTM_PL_TT)
 281                 pref_flags |= TTM_PL_FLAG_TT;
 282
 283         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 284                 pref_flags |= TTM_PL_FLAG_VRAM;
 285
 286         else
 287                 pref_flags |= TTM_PL_FLAG_TT;
 288
 289         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 290
 291         return 0;
 292 }
 293
 294 struct validate_op {
 295         struct list_head vram_list;
 296         struct list_head gart_list;
 297         struct list_head both_list;
 298         struct ww_acquire_ctx ticket;
 299 };
 300
 301 static void
 302 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 303                    struct ww_acquire_ctx *ticket)
 304 {
 305         struct list_head *entry, *tmp;
 306         struct nouveau_bo *nvbo;
 307
 308         list_for_each_safe(entry, tmp, list) {
 309                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 310
 311                 if (likely(fence))
 312                         nouveau_bo_fence(nvbo, fence);
 313
 314                 if (unlikely(nvbo->validate_mapped)) {
 315                         ttm_bo_kunmap(&nvbo->kmap);
 316                         nvbo->validate_mapped = false;
 317                 }
 318
 319                 list_del(&nvbo->entry);
 320                 nvbo->reserved_by = NULL;
 321                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 322                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 323         }
 324 }
 325
 326 static void
 327 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 328 {
 329         validate_fini_list(&op->vram_list, fence, &op->ticket);
 330         validate_fini_list(&op->gart_list, fence, &op->ticket);
 331         validate_fini_list(&op->both_list, fence, &op->ticket);
 332 }
 333
 334 static void
 335 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 336 {
 337         validate_fini_no_ticket(op, fence);
 338         ww_acquire_fini(&op->ticket);
 339 }
 340
 341 static int
 342 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 343               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 344               int nr_buffers, struct validate_op *op)
 345 {
 346         struct nouveau_cli *cli = nouveau_cli(file_priv);
 347         struct drm_device *dev = chan->drm->dev;
 348         int trycnt = 0;
 349         int ret, i;
 350         struct nouveau_bo *res_bo = NULL;
 351
 352         ww_acquire_init(&op->ticket, &reservation_ww_class);
 353 retry:
 354         if (++trycnt > 100000) {
 355                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 356                 return -EINVAL;
 357         }
 358
 359         for (i = 0; i < nr_buffers; i++) {
 360                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 361                 struct drm_gem_object *gem;
 362                 struct nouveau_bo *nvbo;
 363
 364                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 365                 if (!gem) {
 366                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 367                         ww_acquire_done(&op->ticket);
 368                         validate_fini(op, NULL);
 369                         return -ENOENT;
 370                 }
 371                 nvbo = nouveau_gem_object(gem);
 372                 if (nvbo == res_bo) {
 373                         res_bo = NULL;
 374                         drm_gem_object_unreference_unlocked(gem);
 375                         continue;
 376                 }
 377
 378                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 379                         NV_ERROR(cli, "multiple instances of buffer %d on "
 380                                       "validation list\n", b->handle);
 381                         drm_gem_object_unreference_unlocked(gem);
 382                         ww_acquire_done(&op->ticket);
 383                         validate_fini(op, NULL);
 384                         return -EINVAL;
 385                 }
 386
 387                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 388                 if (ret) {
 389                         validate_fini_no_ticket(op, NULL);
 390                         if (unlikely(ret == -EDEADLK)) {
 391                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 392                                                               &op->ticket);
 393                                 if (!ret)
 394                                         res_bo = nvbo;
 395                         }
 396                         if (unlikely(ret)) {
 397                                 ww_acquire_done(&op->ticket);
 398                                 ww_acquire_fini(&op->ticket);
 399                                 drm_gem_object_unreference_unlocked(gem);
 400                                 if (ret != -ERESTARTSYS)
 401                                         NV_ERROR(cli, "fail reserve\n");
 402                                 return ret;
 403                         }
 404                 }
 405
 406                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 407                 nvbo->reserved_by = file_priv;
 408                 nvbo->pbbo_index = i;
 409                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 410                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 411                         list_add_tail(&nvbo->entry, &op->both_list);
 412                 else
 413                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 414                         list_add_tail(&nvbo->entry, &op->vram_list);
 415                 else
 416                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 417                         list_add_tail(&nvbo->entry, &op->gart_list);
 418                 else {
 419                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 420                                  b->valid_domains);
 421                         list_add_tail(&nvbo->entry, &op->both_list);
 422                         ww_acquire_done(&op->ticket);
 423                         validate_fini(op, NULL);
 424                         return -EINVAL;
 425                 }
 426                 if (nvbo == res_bo)
 427                         goto retry;
 428         }
 429
 430         ww_acquire_done(&op->ticket);
 431         return 0;
 432 }
 433
 434 static int
 435 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 436 {
 437         struct nouveau_fence *fence = NULL;
 438         int ret = 0;
 439
 440         spin_lock(&nvbo->bo.bdev->fence_lock);
 441         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 442         spin_unlock(&nvbo->bo.bdev->fence_lock);
 443
 444         if (fence) {
 445                 ret = nouveau_fence_sync(fence, chan);
 446                 nouveau_fence_unref(&fence);
 447         }
 448
 449         return ret;
 450 }
 451
 452 static int
 453 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 454               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 455               uint64_t user_pbbo_ptr)
 456 {
 457         struct nouveau_drm *drm = chan->drm;
 458         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 459                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 460         struct nouveau_bo *nvbo;
 461         int ret, relocs = 0;
 462
 463         list_for_each_entry(nvbo, list, entry) {
 464                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 465
 466                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 467                                              b->write_domains,
 468                                              b->valid_domains);
 469                 if (unlikely(ret)) {
 470                         NV_ERROR(cli, "fail set_domain\n");
 471                         return ret;
 472                 }
 473
 474                 ret = nouveau_bo_validate(nvbo, true, false);
 475                 if (unlikely(ret)) {
 476                         if (ret != -ERESTARTSYS)
 477                                 NV_ERROR(cli, "fail ttm_validate\n");
 478                         return ret;
 479                 }
 480
 481                 ret = validate_sync(chan, nvbo);
 482                 if (unlikely(ret)) {
 483                         NV_ERROR(cli, "fail post-validate sync\n");
 484                         return ret;
 485                 }
 486
 487                 if (nv_device(drm->device)->card_type < NV_50) {
 488                         if (nvbo->bo.offset == b->presumed.offset &&
 489                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 490                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 491                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 492                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 493                                 continue;
 494
 495                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 496                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 497                         else
 498                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 499                         b->presumed.offset = nvbo->bo.offset;
 500                         b->presumed.valid = 0;
 501                         relocs++;
 502
 503                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 504                                              &b->presumed, sizeof(b->presumed)))
 505                                 return -EFAULT;
 506                 }
 507         }
 508
 509         return relocs;
 510 }
 511
 512 static int
 513 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 514                              struct drm_file *file_priv,
 515                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 516                              uint64_t user_buffers, int nr_buffers,
 517                              struct validate_op *op, int *apply_relocs)
 518 {
 519         struct nouveau_cli *cli = nouveau_cli(file_priv);
 520         int ret, relocs = 0;
 521
 522         INIT_LIST_HEAD(&op->vram_list);
 523         INIT_LIST_HEAD(&op->gart_list);
 524         INIT_LIST_HEAD(&op->both_list);
 525
 526         if (nr_buffers == 0)
 527                 return 0;
 528
 529         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 530         if (unlikely(ret)) {
 531                 if (ret != -ERESTARTSYS)
 532                         NV_ERROR(cli, "validate_init\n");
 533                 return ret;
 534         }
 535
 536         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 537         if (unlikely(ret < 0)) {
 538                 if (ret != -ERESTARTSYS)
 539                         NV_ERROR(cli, "validate vram_list\n");
 540                 validate_fini(op, NULL);
 541                 return ret;
 542         }
 543         relocs += ret;
 544
 545         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 546         if (unlikely(ret < 0)) {
 547                 if (ret != -ERESTARTSYS)
 548                         NV_ERROR(cli, "validate gart_list\n");
 549                 validate_fini(op, NULL);
 550                 return ret;
 551         }
 552         relocs += ret;
 553
 554         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 555         if (unlikely(ret < 0)) {
 556                 if (ret != -ERESTARTSYS)
 557                         NV_ERROR(cli, "validate both_list\n");
 558                 validate_fini(op, NULL);
 559                 return ret;
 560         }
 561         relocs += ret;
 562
 563         *apply_relocs = relocs;
 564         return 0;
 565 }
 566
 567 static inline void
 568 u_free(void *addr)
 569 {
 570         if (!is_vmalloc_addr(addr))
 571                 kfree(addr);
 572         else
 573                 vfree(addr);
 574 }
 575
 576 static inline void *
 577 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 578 {
 579         void *mem;
 580         void __user *userptr = (void __force __user *)(uintptr_t)user;
 581
 582         size *= nmemb;
 583
 584         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 585         if (!mem)
 586                 mem = vmalloc(size);
 587         if (!mem)
 588                 return ERR_PTR(-ENOMEM);
 589
 590         if (copy_from_user(mem, userptr, size)) {
 591                 u_free(mem);
 592                 return ERR_PTR(-EFAULT);
 593         }
 594
 595         return mem;
 596 }
 597
 598 static int
 599 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 600                                 struct drm_nouveau_gem_pushbuf *req,
 601                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 602 {
 603         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 604         int ret = 0;
 605         unsigned i;
 606
 607         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 608         if (IS_ERR(reloc))
 609                 return PTR_ERR(reloc);
 610
 611         for (i = 0; i < req->nr_relocs; i++) {
 612                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 613                 struct drm_nouveau_gem_pushbuf_bo *b;
 614                 struct nouveau_bo *nvbo;
 615                 uint32_t data;
 616
 617                 if (unlikely(r->bo_index > req->nr_buffers)) {
 618                         NV_ERROR(cli, "reloc bo index invalid\n");
 619                         ret = -EINVAL;
 620                         break;
 621                 }
 622
 623                 b = &bo[r->bo_index];
 624                 if (b->presumed.valid)
 625                         continue;
 626
 627                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 628                         NV_ERROR(cli, "reloc container bo index invalid\n");
 629                         ret = -EINVAL;
 630                         break;
 631                 }
 632                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 633
 634                 if (unlikely(r->reloc_bo_offset + 4 >
 635                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 636                         NV_ERROR(cli, "reloc outside of bo\n");
 637                         ret = -EINVAL;
 638                         break;
 639                 }
 640
 641                 if (!nvbo->kmap.virtual) {
 642                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 643                                           &nvbo->kmap);
 644                         if (ret) {
 645                                 NV_ERROR(cli, "failed kmap for reloc\n");
 646                                 break;
 647                         }
 648                         nvbo->validate_mapped = true;
 649                 }
 650
 651                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 652                         data = b->presumed.offset + r->data;
 653                 else
 654                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 655                         data = (b->presumed.offset + r->data) >> 32;
 656                 else
 657                         data = r->data;
 658
 659                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 660                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 661                                 data |= r->tor;
 662                         else
 663                                 data |= r->vor;
 664                 }
 665
 666                 spin_lock(&nvbo->bo.bdev->fence_lock);
 667                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 668                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 669                 if (ret) {
 670                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 671                         break;
 672                 }
 673
 674                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 675         }
 676
 677         u_free(reloc);
 678         return ret;
 679 }
 680
 681 int
 682 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 683                           struct drm_file *file_priv)
 684 {
 685         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 686         struct nouveau_cli *cli = nouveau_cli(file_priv);
 687         struct nouveau_abi16_chan *temp;
 688         struct nouveau_drm *drm = nouveau_drm(dev);
 689         struct drm_nouveau_gem_pushbuf *req = data;
 690         struct drm_nouveau_gem_pushbuf_push *push;
 691         struct drm_nouveau_gem_pushbuf_bo *bo;
 692         struct nouveau_channel *chan = NULL;
 693         struct validate_op op;
 694         struct nouveau_fence *fence = NULL;
 695         int i, j, ret = 0, do_reloc = 0;
 696
 697         if (unlikely(!abi16))
 698                 return -ENOMEM;
 699
 700         list_for_each_entry(temp, &abi16->channels, head) {
 701                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 702                         chan = temp->chan;
 703                         break;
 704                 }
 705         }
 706
 707         if (!chan)
 708                 return nouveau_abi16_put(abi16, -ENOENT);
 709
 710         req->vram_available = drm->gem.vram_available;
 711         req->gart_available = drm->gem.gart_available;
 712         if (unlikely(req->nr_push == 0))
 713                 goto out_next;
 714
 715         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 716                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 717                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 718                 return nouveau_abi16_put(abi16, -EINVAL);
 719         }
 720
 721         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 722                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 723                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 724                 return nouveau_abi16_put(abi16, -EINVAL);
 725         }
 726
 727         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 728                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 729                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 730                 return nouveau_abi16_put(abi16, -EINVAL);
 731         }
 732
 733         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 734         if (IS_ERR(push))
 735                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 736
 737         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 738         if (IS_ERR(bo)) {
 739                 u_free(push);
 740                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 741         }
 742
 743         /* Ensure all push buffers are on validate list */
 744         for (i = 0; i < req->nr_push; i++) {
 745                 if (push[i].bo_index >= req->nr_buffers) {
 746                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 747                         ret = -EINVAL;
 748                         goto out_prevalid;
 749                 }
 750         }
 751
 752         /* Validate buffer list */
 753         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 754                                            req->nr_buffers, &op, &do_reloc);
 755         if (ret) {
 756                 if (ret != -ERESTARTSYS)
 757                         NV_ERROR(cli, "validate: %d\n", ret);
 758                 goto out_prevalid;
 759         }
 760
 761         /* Apply any relocations that are required */
 762         if (do_reloc) {
 763                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 764                 if (ret) {
 765                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 766                         goto out;
 767                 }
 768         }
 769
 770         if (chan->dma.ib_max) {
 771                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 772                 if (ret) {
 773                         NV_ERROR(cli, "nv50cal_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                         nv50_dma_push(chan, nvbo, push[i].offset,
 782                                       push[i].length);
 783                 }
 784         } else
 785         if (nv_device(drm->device)->chipset >= 0x25) {
 786                 ret = RING_SPACE(chan, req->nr_push * 2);
 787                 if (ret) {
 788                         NV_ERROR(cli, "cal_space: %d\n", ret);
 789                         goto out;
 790                 }
 791
 792                 for (i = 0; i < req->nr_push; i++) {
 793                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 794                                 bo[push[i].bo_index].user_priv;
 795
 796                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 797                         OUT_RING(chan, 0);
 798                 }
 799         } else {
 800                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 801                 if (ret) {
 802                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 803                         goto out;
 804                 }
 805
 806                 for (i = 0; i < req->nr_push; i++) {
 807                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 808                                 bo[push[i].bo_index].user_priv;
 809                         uint32_t cmd;
 810
 811                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 812                         cmd |= 0x20000000;
 813                         if (unlikely(cmd != req->suffix0)) {
 814                                 if (!nvbo->kmap.virtual) {
 815                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 816                                                           nvbo->bo.mem.
 817                                                           num_pages,
 818                                                           &nvbo->kmap);
 819                                         if (ret) {
 820                                                 WIND_RING(chan);
 821                                                 goto out;
 822                                         }
 823                                         nvbo->validate_mapped = true;
 824                                 }
 825
 826                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 827                                                 push[i].length - 8) / 4, cmd);
 828                         }
 829
 830                         OUT_RING(chan, 0x20000000 |
 831                                       (nvbo->bo.offset + push[i].offset));
 832                         OUT_RING(chan, 0);
 833                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 834                                 OUT_RING(chan, 0);
 835                 }
 836         }
 837
 838         ret = nouveau_fence_new(chan, false, &fence);
 839         if (ret) {
 840                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 841                 WIND_RING(chan);
 842                 goto out;
 843         }
 844
 845 out:
 846         validate_fini(&op, fence);
 847         nouveau_fence_unref(&fence);
 848
 849 out_prevalid:
 850         u_free(bo);
 851         u_free(push);
 852
 853 out_next:
 854         if (chan->dma.ib_max) {
 855                 req->suffix0 = 0x00000000;
 856                 req->suffix1 = 0x00000000;
 857         } else
 858         if (nv_device(drm->device)->chipset >= 0x25) {
 859                 req->suffix0 = 0x00020000;
 860                 req->suffix1 = 0x00000000;
 861         } else {
 862                 req->suffix0 = 0x20000000 |
 863                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 864                 req->suffix1 = 0x00000000;
 865         }
 866
 867         return nouveau_abi16_put(abi16, ret);
 868 }
 869
 870 static inline uint32_t
 871 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 872 {
 873         uint32_t flags = 0;
 874
 875         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 876                 flags |= TTM_PL_FLAG_VRAM;
 877         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 878                 flags |= TTM_PL_FLAG_TT;
 879
 880         return flags;
 881 }
 882
 883 int
 884 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 885                            struct drm_file *file_priv)
 886 {
 887         struct drm_nouveau_gem_cpu_prep *req = data;
 888         struct drm_gem_object *gem;
 889         struct nouveau_bo *nvbo;
 890         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 891         int ret = -EINVAL;
 892
 893         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 894         if (!gem)
 895                 return -ENOENT;
 896         nvbo = nouveau_gem_object(gem);
 897
 898         spin_lock(&nvbo->bo.bdev->fence_lock);
 899         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 900         spin_unlock(&nvbo->bo.bdev->fence_lock);
 901         drm_gem_object_unreference_unlocked(gem);
 902         return ret;
 903 }
 904
 905 int
 906 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 907                            struct drm_file *file_priv)
 908 {
 909         return 0;
 910 }
 911
 912 int
 913 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 914                        struct drm_file *file_priv)
 915 {
 916         struct drm_nouveau_gem_info *req = data;
 917         struct drm_gem_object *gem;
 918         int ret;
 919
 920         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 921         if (!gem)
 922                 return -ENOENT;
 923
 924         ret = nouveau_gem_info(file_priv, gem, req);
 925         drm_gem_object_unreference_unlocked(gem);
 926         return ret;
 927 }
 928