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 (gem->import_attach)
  54                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  55
  56         ttm_bo_unref(&bo);
  57
  58         drm_gem_object_release(gem);
  59         kfree(gem);
  60 }
  61
  62 int
  63 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  64 {
  65         struct nouveau_cli *cli = nouveau_cli(file_priv);
  66         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  67         struct nouveau_vma *vma;
  68         int ret;
  69
  70         if (!cli->base.vm)
  71                 return 0;
  72
  73         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
  74         if (ret)
  75                 return ret;
  76
  77         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
  78         if (!vma) {
  79                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  80                 if (!vma) {
  81                         ret = -ENOMEM;
  82                         goto out;
  83                 }
  84
  85                 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
  86                 if (ret) {
  87                         kfree(vma);
  88                         goto out;
  89                 }
  90         } else {
  91                 vma->refcount++;
  92         }
  93
  94 out:
  95         ttm_bo_unreserve(&nvbo->bo);
  96         return ret;
  97 }
  98
  99 static void
 100 nouveau_gem_object_delete(void *data)
 101 {
 102         struct nouveau_vma *vma = data;
 103         nouveau_vm_unmap(vma);
 104         nouveau_vm_put(vma);
 105         kfree(vma);
 106 }
 107
 108 static void
 109 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 110 {
 111         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 112         struct nouveau_fence *fence = NULL;
 113
 114         list_del(&vma->head);
 115
 116         if (mapped) {
 117                 spin_lock(&nvbo->bo.bdev->fence_lock);
 118                 if (nvbo->bo.sync_obj)
 119                         fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 120                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 121         }
 122
 123         if (fence) {
 124                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 125         } else {
 126                 if (mapped)
 127                         nouveau_vm_unmap(vma);
 128                 nouveau_vm_put(vma);
 129                 kfree(vma);
 130         }
 131         nouveau_fence_unref(&fence);
 132 }
 133
 134 void
 135 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 136 {
 137         struct nouveau_cli *cli = nouveau_cli(file_priv);
 138         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 139         struct nouveau_vma *vma;
 140         int ret;
 141
 142         if (!cli->base.vm)
 143                 return;
 144
 145         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 146         if (ret)
 147                 return;
 148
 149         vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 150         if (vma) {
 151                 if (--vma->refcount == 0)
 152                         nouveau_gem_object_unmap(nvbo, vma);
 153         }
 154         ttm_bo_unreserve(&nvbo->bo);
 155 }
 156
 157 int
 158 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 159                 uint32_t tile_mode, uint32_t tile_flags,
 160                 struct nouveau_bo **pnvbo)
 161 {
 162         struct nouveau_drm *drm = nouveau_drm(dev);
 163         struct nouveau_bo *nvbo;
 164         u32 flags = 0;
 165         int ret;
 166
 167         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 168                 flags |= TTM_PL_FLAG_VRAM;
 169         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 170                 flags |= TTM_PL_FLAG_TT;
 171         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 172                 flags |= TTM_PL_FLAG_SYSTEM;
 173
 174         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 175                              tile_flags, NULL, pnvbo);
 176         if (ret)
 177                 return ret;
 178         nvbo = *pnvbo;
 179
 180         /* we restrict allowed domains on nv50+ to only the types
 181          * that were requested at creation time.  not possibly on
 182          * earlier chips without busting the ABI.
 183          */
 184         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 185                               NOUVEAU_GEM_DOMAIN_GART;
 186         if (nv_device(drm->device)->card_type >= NV_50)
 187                 nvbo->valid_domains &= domain;
 188
 189         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
 190         if (!nvbo->gem) {
 191                 nouveau_bo_ref(NULL, pnvbo);
 192                 return -ENOMEM;
 193         }
 194
 195         nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
 196         nvbo->gem->driver_private = nvbo;
 197         return 0;
 198 }
 199
 200 static int
 201 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 202                  struct drm_nouveau_gem_info *rep)
 203 {
 204         struct nouveau_cli *cli = nouveau_cli(file_priv);
 205         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 206         struct nouveau_vma *vma;
 207
 208         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 209                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 210         else
 211                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 212
 213         rep->offset = nvbo->bo.offset;
 214         if (cli->base.vm) {
 215                 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
 216                 if (!vma)
 217                         return -EINVAL;
 218
 219                 rep->offset = vma->offset;
 220         }
 221
 222         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 223         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 224         rep->tile_mode = nvbo->tile_mode;
 225         rep->tile_flags = nvbo->tile_flags;
 226         return 0;
 227 }
 228
 229 int
 230 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 231                       struct drm_file *file_priv)
 232 {
 233         struct nouveau_drm *drm = nouveau_drm(dev);
 234         struct nouveau_cli *cli = nouveau_cli(file_priv);
 235         struct nouveau_fb *pfb = nouveau_fb(drm->device);
 236         struct drm_nouveau_gem_new *req = data;
 237         struct nouveau_bo *nvbo = NULL;
 238         int ret = 0;
 239
 240         drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
 241
 242         if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
 243                 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 244                 return -EINVAL;
 245         }
 246
 247         ret = nouveau_gem_new(dev, req->info.size, req->align,
 248                               req->info.domain, req->info.tile_mode,
 249                               req->info.tile_flags, &nvbo);
 250         if (ret)
 251                 return ret;
 252
 253         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
 254         if (ret == 0) {
 255                 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
 256                 if (ret)
 257                         drm_gem_handle_delete(file_priv, req->info.handle);
 258         }
 259
 260         /* drop reference from allocate - handle holds it now */
 261         drm_gem_object_unreference_unlocked(nvbo->gem);
 262         return ret;
 263 }
 264
 265 static int
 266 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 267                        uint32_t write_domains, uint32_t valid_domains)
 268 {
 269         struct nouveau_bo *nvbo = gem->driver_private;
 270         struct ttm_buffer_object *bo = &nvbo->bo;
 271         uint32_t domains = valid_domains & nvbo->valid_domains &
 272                 (write_domains ? write_domains : read_domains);
 273         uint32_t pref_flags = 0, valid_flags = 0;
 274
 275         if (!domains)
 276                 return -EINVAL;
 277
 278         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 279                 valid_flags |= TTM_PL_FLAG_VRAM;
 280
 281         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 282                 valid_flags |= TTM_PL_FLAG_TT;
 283
 284         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 285             bo->mem.mem_type == TTM_PL_VRAM)
 286                 pref_flags |= TTM_PL_FLAG_VRAM;
 287
 288         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 289                  bo->mem.mem_type == TTM_PL_TT)
 290                 pref_flags |= TTM_PL_FLAG_TT;
 291
 292         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 293                 pref_flags |= TTM_PL_FLAG_VRAM;
 294
 295         else
 296                 pref_flags |= TTM_PL_FLAG_TT;
 297
 298         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 299
 300         return 0;
 301 }
 302
 303 struct validate_op {
 304         struct list_head vram_list;
 305         struct list_head gart_list;
 306         struct list_head both_list;
 307         struct ww_acquire_ctx ticket;
 308 };
 309
 310 static void
 311 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
 312                    struct ww_acquire_ctx *ticket)
 313 {
 314         struct list_head *entry, *tmp;
 315         struct nouveau_bo *nvbo;
 316
 317         list_for_each_safe(entry, tmp, list) {
 318                 nvbo = list_entry(entry, struct nouveau_bo, entry);
 319
 320                 if (likely(fence))
 321                         nouveau_bo_fence(nvbo, fence);
 322
 323                 if (unlikely(nvbo->validate_mapped)) {
 324                         ttm_bo_kunmap(&nvbo->kmap);
 325                         nvbo->validate_mapped = false;
 326                 }
 327
 328                 list_del(&nvbo->entry);
 329                 nvbo->reserved_by = NULL;
 330                 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
 331                 drm_gem_object_unreference_unlocked(nvbo->gem);
 332         }
 333 }
 334
 335 static void
 336 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
 337 {
 338         validate_fini_list(&op->vram_list, fence, &op->ticket);
 339         validate_fini_list(&op->gart_list, fence, &op->ticket);
 340         validate_fini_list(&op->both_list, fence, &op->ticket);
 341 }
 342
 343 static void
 344 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
 345 {
 346         validate_fini_no_ticket(op, fence);
 347         ww_acquire_fini(&op->ticket);
 348 }
 349
 350 static int
 351 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 352               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 353               int nr_buffers, struct validate_op *op)
 354 {
 355         struct nouveau_cli *cli = nouveau_cli(file_priv);
 356         struct drm_device *dev = chan->drm->dev;
 357         int trycnt = 0;
 358         int ret, i;
 359         struct nouveau_bo *res_bo = NULL;
 360
 361         ww_acquire_init(&op->ticket, &reservation_ww_class);
 362 retry:
 363         if (++trycnt > 100000) {
 364                 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
 365                 return -EINVAL;
 366         }
 367
 368         for (i = 0; i < nr_buffers; i++) {
 369                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 370                 struct drm_gem_object *gem;
 371                 struct nouveau_bo *nvbo;
 372
 373                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 374                 if (!gem) {
 375                         NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
 376                         ww_acquire_done(&op->ticket);
 377                         validate_fini(op, NULL);
 378                         return -ENOENT;
 379                 }
 380                 nvbo = gem->driver_private;
 381                 if (nvbo == res_bo) {
 382                         res_bo = NULL;
 383                         drm_gem_object_unreference_unlocked(gem);
 384                         continue;
 385                 }
 386
 387                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 388                         NV_ERROR(cli, "multiple instances of buffer %d on "
 389                                       "validation list\n", b->handle);
 390                         drm_gem_object_unreference_unlocked(gem);
 391                         ww_acquire_done(&op->ticket);
 392                         validate_fini(op, NULL);
 393                         return -EINVAL;
 394                 }
 395
 396                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 397                 if (ret) {
 398                         validate_fini_no_ticket(op, NULL);
 399                         if (unlikely(ret == -EDEADLK)) {
 400                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 401                                                               &op->ticket);
 402                                 if (!ret)
 403                                         res_bo = nvbo;
 404                         }
 405                         if (unlikely(ret)) {
 406                                 ww_acquire_done(&op->ticket);
 407                                 ww_acquire_fini(&op->ticket);
 408                                 drm_gem_object_unreference_unlocked(gem);
 409                                 if (ret != -ERESTARTSYS)
 410                                         NV_ERROR(cli, "fail reserve\n");
 411                                 return ret;
 412                         }
 413                 }
 414
 415                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 416                 nvbo->reserved_by = file_priv;
 417                 nvbo->pbbo_index = i;
 418                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 419                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 420                         list_add_tail(&nvbo->entry, &op->both_list);
 421                 else
 422                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 423                         list_add_tail(&nvbo->entry, &op->vram_list);
 424                 else
 425                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 426                         list_add_tail(&nvbo->entry, &op->gart_list);
 427                 else {
 428                         NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
 429                                  b->valid_domains);
 430                         list_add_tail(&nvbo->entry, &op->both_list);
 431                         ww_acquire_done(&op->ticket);
 432                         validate_fini(op, NULL);
 433                         return -EINVAL;
 434                 }
 435                 if (nvbo == res_bo)
 436                         goto retry;
 437         }
 438
 439         ww_acquire_done(&op->ticket);
 440         return 0;
 441 }
 442
 443 static int
 444 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
 445 {
 446         struct nouveau_fence *fence = NULL;
 447         int ret = 0;
 448
 449         spin_lock(&nvbo->bo.bdev->fence_lock);
 450         if (nvbo->bo.sync_obj)
 451                 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
 452         spin_unlock(&nvbo->bo.bdev->fence_lock);
 453
 454         if (fence) {
 455                 ret = nouveau_fence_sync(fence, chan);
 456                 nouveau_fence_unref(&fence);
 457         }
 458
 459         return ret;
 460 }
 461
 462 static int
 463 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 464               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 465               uint64_t user_pbbo_ptr)
 466 {
 467         struct nouveau_drm *drm = chan->drm;
 468         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 469                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 470         struct nouveau_bo *nvbo;
 471         int ret, relocs = 0;
 472
 473         list_for_each_entry(nvbo, list, entry) {
 474                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 475
 476                 ret = validate_sync(chan, nvbo);
 477                 if (unlikely(ret)) {
 478                         NV_ERROR(cli, "fail pre-validate sync\n");
 479                         return ret;
 480                 }
 481
 482                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
 483                                              b->write_domains,
 484                                              b->valid_domains);
 485                 if (unlikely(ret)) {
 486                         NV_ERROR(cli, "fail set_domain\n");
 487                         return ret;
 488                 }
 489
 490                 ret = nouveau_bo_validate(nvbo, true, false);
 491                 if (unlikely(ret)) {
 492                         if (ret != -ERESTARTSYS)
 493                                 NV_ERROR(cli, "fail ttm_validate\n");
 494                         return ret;
 495                 }
 496
 497                 ret = validate_sync(chan, nvbo);
 498                 if (unlikely(ret)) {
 499                         NV_ERROR(cli, "fail post-validate sync\n");
 500                         return ret;
 501                 }
 502
 503                 if (nv_device(drm->device)->card_type < NV_50) {
 504                         if (nvbo->bo.offset == b->presumed.offset &&
 505                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 506                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 507                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 508                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 509                                 continue;
 510
 511                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 512                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 513                         else
 514                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 515                         b->presumed.offset = nvbo->bo.offset;
 516                         b->presumed.valid = 0;
 517                         relocs++;
 518
 519                         if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
 520                                              &b->presumed, sizeof(b->presumed)))
 521                                 return -EFAULT;
 522                 }
 523         }
 524
 525         return relocs;
 526 }
 527
 528 static int
 529 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 530                              struct drm_file *file_priv,
 531                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 532                              uint64_t user_buffers, int nr_buffers,
 533                              struct validate_op *op, int *apply_relocs)
 534 {
 535         struct nouveau_cli *cli = nouveau_cli(file_priv);
 536         int ret, relocs = 0;
 537
 538         INIT_LIST_HEAD(&op->vram_list);
 539         INIT_LIST_HEAD(&op->gart_list);
 540         INIT_LIST_HEAD(&op->both_list);
 541
 542         if (nr_buffers == 0)
 543                 return 0;
 544
 545         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 546         if (unlikely(ret)) {
 547                 if (ret != -ERESTARTSYS)
 548                         NV_ERROR(cli, "validate_init\n");
 549                 return ret;
 550         }
 551
 552         ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
 553         if (unlikely(ret < 0)) {
 554                 if (ret != -ERESTARTSYS)
 555                         NV_ERROR(cli, "validate vram_list\n");
 556                 validate_fini(op, NULL);
 557                 return ret;
 558         }
 559         relocs += ret;
 560
 561         ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
 562         if (unlikely(ret < 0)) {
 563                 if (ret != -ERESTARTSYS)
 564                         NV_ERROR(cli, "validate gart_list\n");
 565                 validate_fini(op, NULL);
 566                 return ret;
 567         }
 568         relocs += ret;
 569
 570         ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
 571         if (unlikely(ret < 0)) {
 572                 if (ret != -ERESTARTSYS)
 573                         NV_ERROR(cli, "validate both_list\n");
 574                 validate_fini(op, NULL);
 575                 return ret;
 576         }
 577         relocs += ret;
 578
 579         *apply_relocs = relocs;
 580         return 0;
 581 }
 582
 583 static inline void
 584 u_free(void *addr)
 585 {
 586         if (!is_vmalloc_addr(addr))
 587                 kfree(addr);
 588         else
 589                 vfree(addr);
 590 }
 591
 592 static inline void *
 593 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 594 {
 595         void *mem;
 596         void __user *userptr = (void __force __user *)(uintptr_t)user;
 597
 598         size *= nmemb;
 599
 600         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 601         if (!mem)
 602                 mem = vmalloc(size);
 603         if (!mem)
 604                 return ERR_PTR(-ENOMEM);
 605
 606         if (DRM_COPY_FROM_USER(mem, userptr, size)) {
 607                 u_free(mem);
 608                 return ERR_PTR(-EFAULT);
 609         }
 610
 611         return mem;
 612 }
 613
 614 static int
 615 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 616                                 struct drm_nouveau_gem_pushbuf *req,
 617                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 618 {
 619         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 620         int ret = 0;
 621         unsigned i;
 622
 623         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 624         if (IS_ERR(reloc))
 625                 return PTR_ERR(reloc);
 626
 627         for (i = 0; i < req->nr_relocs; i++) {
 628                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 629                 struct drm_nouveau_gem_pushbuf_bo *b;
 630                 struct nouveau_bo *nvbo;
 631                 uint32_t data;
 632
 633                 if (unlikely(r->bo_index > req->nr_buffers)) {
 634                         NV_ERROR(cli, "reloc bo index invalid\n");
 635                         ret = -EINVAL;
 636                         break;
 637                 }
 638
 639                 b = &bo[r->bo_index];
 640                 if (b->presumed.valid)
 641                         continue;
 642
 643                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
 644                         NV_ERROR(cli, "reloc container bo index invalid\n");
 645                         ret = -EINVAL;
 646                         break;
 647                 }
 648                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 649
 650                 if (unlikely(r->reloc_bo_offset + 4 >
 651                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 652                         NV_ERROR(cli, "reloc outside of bo\n");
 653                         ret = -EINVAL;
 654                         break;
 655                 }
 656
 657                 if (!nvbo->kmap.virtual) {
 658                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 659                                           &nvbo->kmap);
 660                         if (ret) {
 661                                 NV_ERROR(cli, "failed kmap for reloc\n");
 662                                 break;
 663                         }
 664                         nvbo->validate_mapped = true;
 665                 }
 666
 667                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 668                         data = b->presumed.offset + r->data;
 669                 else
 670                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 671                         data = (b->presumed.offset + r->data) >> 32;
 672                 else
 673                         data = r->data;
 674
 675                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 676                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 677                                 data |= r->tor;
 678                         else
 679                                 data |= r->vor;
 680                 }
 681
 682                 spin_lock(&nvbo->bo.bdev->fence_lock);
 683                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
 684                 spin_unlock(&nvbo->bo.bdev->fence_lock);
 685                 if (ret) {
 686                         NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
 687                         break;
 688                 }
 689
 690                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 691         }
 692
 693         u_free(reloc);
 694         return ret;
 695 }
 696
 697 int
 698 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 699                           struct drm_file *file_priv)
 700 {
 701         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 702         struct nouveau_cli *cli = nouveau_cli(file_priv);
 703         struct nouveau_abi16_chan *temp;
 704         struct nouveau_drm *drm = nouveau_drm(dev);
 705         struct drm_nouveau_gem_pushbuf *req = data;
 706         struct drm_nouveau_gem_pushbuf_push *push;
 707         struct drm_nouveau_gem_pushbuf_bo *bo;
 708         struct nouveau_channel *chan = NULL;
 709         struct validate_op op;
 710         struct nouveau_fence *fence = NULL;
 711         int i, j, ret = 0, do_reloc = 0;
 712
 713         if (unlikely(!abi16))
 714                 return -ENOMEM;
 715
 716         list_for_each_entry(temp, &abi16->channels, head) {
 717                 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
 718                         chan = temp->chan;
 719                         break;
 720                 }
 721         }
 722
 723         if (!chan)
 724                 return nouveau_abi16_put(abi16, -ENOENT);
 725
 726         req->vram_available = drm->gem.vram_available;
 727         req->gart_available = drm->gem.gart_available;
 728         if (unlikely(req->nr_push == 0))
 729                 goto out_next;
 730
 731         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 732                 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
 733                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 734                 return nouveau_abi16_put(abi16, -EINVAL);
 735         }
 736
 737         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 738                 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
 739                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 740                 return nouveau_abi16_put(abi16, -EINVAL);
 741         }
 742
 743         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 744                 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 745                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 746                 return nouveau_abi16_put(abi16, -EINVAL);
 747         }
 748
 749         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 750         if (IS_ERR(push))
 751                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 752
 753         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 754         if (IS_ERR(bo)) {
 755                 u_free(push);
 756                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 757         }
 758
 759         /* Ensure all push buffers are on validate list */
 760         for (i = 0; i < req->nr_push; i++) {
 761                 if (push[i].bo_index >= req->nr_buffers) {
 762                         NV_ERROR(cli, "push %d buffer not in list\n", i);
 763                         ret = -EINVAL;
 764                         goto out_prevalid;
 765                 }
 766         }
 767
 768         /* Validate buffer list */
 769         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 770                                            req->nr_buffers, &op, &do_reloc);
 771         if (ret) {
 772                 if (ret != -ERESTARTSYS)
 773                         NV_ERROR(cli, "validate: %d\n", ret);
 774                 goto out_prevalid;
 775         }
 776
 777         /* Apply any relocations that are required */
 778         if (do_reloc) {
 779                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 780                 if (ret) {
 781                         NV_ERROR(cli, "reloc apply: %d\n", ret);
 782                         goto out;
 783                 }
 784         }
 785
 786         if (chan->dma.ib_max) {
 787                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 788                 if (ret) {
 789                         NV_ERROR(cli, "nv50cal_space: %d\n", ret);
 790                         goto out;
 791                 }
 792
 793                 for (i = 0; i < req->nr_push; i++) {
 794                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 795                                 bo[push[i].bo_index].user_priv;
 796
 797                         nv50_dma_push(chan, nvbo, push[i].offset,
 798                                       push[i].length);
 799                 }
 800         } else
 801         if (nv_device(drm->device)->chipset >= 0x25) {
 802                 ret = RING_SPACE(chan, req->nr_push * 2);
 803                 if (ret) {
 804                         NV_ERROR(cli, "cal_space: %d\n", ret);
 805                         goto out;
 806                 }
 807
 808                 for (i = 0; i < req->nr_push; i++) {
 809                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 810                                 bo[push[i].bo_index].user_priv;
 811
 812                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 813                         OUT_RING(chan, 0);
 814                 }
 815         } else {
 816                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 817                 if (ret) {
 818                         NV_ERROR(cli, "jmp_space: %d\n", ret);
 819                         goto out;
 820                 }
 821
 822                 for (i = 0; i < req->nr_push; i++) {
 823                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 824                                 bo[push[i].bo_index].user_priv;
 825                         uint32_t cmd;
 826
 827                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 828                         cmd |= 0x20000000;
 829                         if (unlikely(cmd != req->suffix0)) {
 830                                 if (!nvbo->kmap.virtual) {
 831                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 832                                                           nvbo->bo.mem.
 833                                                           num_pages,
 834                                                           &nvbo->kmap);
 835                                         if (ret) {
 836                                                 WIND_RING(chan);
 837                                                 goto out;
 838                                         }
 839                                         nvbo->validate_mapped = true;
 840                                 }
 841
 842                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 843                                                 push[i].length - 8) / 4, cmd);
 844                         }
 845
 846                         OUT_RING(chan, 0x20000000 |
 847                                       (nvbo->bo.offset + push[i].offset));
 848                         OUT_RING(chan, 0);
 849                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 850                                 OUT_RING(chan, 0);
 851                 }
 852         }
 853
 854         ret = nouveau_fence_new(chan, false, &fence);
 855         if (ret) {
 856                 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
 857                 WIND_RING(chan);
 858                 goto out;
 859         }
 860
 861 out:
 862         validate_fini(&op, fence);
 863         nouveau_fence_unref(&fence);
 864
 865 out_prevalid:
 866         u_free(bo);
 867         u_free(push);
 868
 869 out_next:
 870         if (chan->dma.ib_max) {
 871                 req->suffix0 = 0x00000000;
 872                 req->suffix1 = 0x00000000;
 873         } else
 874         if (nv_device(drm->device)->chipset >= 0x25) {
 875                 req->suffix0 = 0x00020000;
 876                 req->suffix1 = 0x00000000;
 877         } else {
 878                 req->suffix0 = 0x20000000 |
 879                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 880                 req->suffix1 = 0x00000000;
 881         }
 882
 883         return nouveau_abi16_put(abi16, ret);
 884 }
 885
 886 static inline uint32_t
 887 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
 888 {
 889         uint32_t flags = 0;
 890
 891         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 892                 flags |= TTM_PL_FLAG_VRAM;
 893         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 894                 flags |= TTM_PL_FLAG_TT;
 895
 896         return flags;
 897 }
 898
 899 int
 900 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 901                            struct drm_file *file_priv)
 902 {
 903         struct drm_nouveau_gem_cpu_prep *req = data;
 904         struct drm_gem_object *gem;
 905         struct nouveau_bo *nvbo;
 906         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 907         int ret = -EINVAL;
 908
 909         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 910         if (!gem)
 911                 return -ENOENT;
 912         nvbo = nouveau_gem_object(gem);
 913
 914         spin_lock(&nvbo->bo.bdev->fence_lock);
 915         ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
 916         spin_unlock(&nvbo->bo.bdev->fence_lock);
 917         drm_gem_object_unreference_unlocked(gem);
 918         return ret;
 919 }
 920
 921 int
 922 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 923                            struct drm_file *file_priv)
 924 {
 925         return 0;
 926 }
 927
 928 int
 929 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 930                        struct drm_file *file_priv)
 931 {
 932         struct drm_nouveau_gem_info *req = data;
 933         struct drm_gem_object *gem;
 934         int ret;
 935
 936         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 937         if (!gem)
 938                 return -ENOENT;
 939
 940         ret = nouveau_gem_info(file_priv, gem, req);
 941         drm_gem_object_unreference_unlocked(gem);
 942         return ret;
 943 }
 944