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 #include "nouveau_mem.h"
  35 #include "nouveau_vmm.h"
  36
  37 #include <nvif/class.h>
  38 #include <nvif/push206e.h>
  39
  40 void
  41 nouveau_gem_object_del(struct drm_gem_object *gem)
  42 {
  43         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  44         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  45         struct device *dev = drm->dev->dev;
  46         int ret;
  47
  48         ret = pm_runtime_get_sync(dev);
  49         if (WARN_ON(ret < 0 && ret != -EACCES)) {
  50                 pm_runtime_put_autosuspend(dev);
  51                 return;
  52         }
  53
  54         if (gem->import_attach)
  55                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  56
  57         ttm_bo_put(&nvbo->bo);
  58
  59         pm_runtime_mark_last_busy(dev);
  60         pm_runtime_put_autosuspend(dev);
  61 }
  62
  63 int
  64 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  65 {
  66         struct nouveau_cli *cli = nouveau_cli(file_priv);
  67         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  68         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  69         struct device *dev = drm->dev->dev;
  70         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  71         struct nouveau_vma *vma;
  72         int ret;
  73
  74         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
  75                 return 0;
  76
  77         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  78         if (ret)
  79                 return ret;
  80
  81         ret = pm_runtime_get_sync(dev);
  82         if (ret < 0 && ret != -EACCES) {
  83                 pm_runtime_put_autosuspend(dev);
  84                 goto out;
  85         }
  86
  87         ret = nouveau_vma_new(nvbo, vmm, &vma);
  88         pm_runtime_mark_last_busy(dev);
  89         pm_runtime_put_autosuspend(dev);
  90 out:
  91         ttm_bo_unreserve(&nvbo->bo);
  92         return ret;
  93 }
  94
  95 struct nouveau_gem_object_unmap {
  96         struct nouveau_cli_work work;
  97         struct nouveau_vma *vma;
  98 };
  99
 100 static void
 101 nouveau_gem_object_delete(struct nouveau_vma *vma)
 102 {
 103         nouveau_fence_unref(&vma->fence);
 104         nouveau_vma_del(&vma);
 105 }
 106
 107 static void
 108 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 109 {
 110         struct nouveau_gem_object_unmap *work =
 111                 container_of(w, typeof(*work), work);
 112         nouveau_gem_object_delete(work->vma);
 113         kfree(work);
 114 }
 115
 116 static void
 117 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 118 {
 119         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 120         struct nouveau_gem_object_unmap *work;
 121
 122         list_del_init(&vma->head);
 123
 124         if (!fence) {
 125                 nouveau_gem_object_delete(vma);
 126                 return;
 127         }
 128
 129         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 130                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 131                 nouveau_gem_object_delete(vma);
 132                 return;
 133         }
 134
 135         work->work.func = nouveau_gem_object_delete_work;
 136         work->vma = vma;
 137         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 138 }
 139
 140 void
 141 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 142 {
 143         struct nouveau_cli *cli = nouveau_cli(file_priv);
 144         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 145         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 146         struct device *dev = drm->dev->dev;
 147         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 148         struct nouveau_vma *vma;
 149         int ret;
 150
 151         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 152                 return;
 153
 154         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 155         if (ret)
 156                 return;
 157
 158         vma = nouveau_vma_find(nvbo, vmm);
 159         if (vma) {
 160                 if (--vma->refs == 0) {
 161                         ret = pm_runtime_get_sync(dev);
 162                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 163                                 nouveau_gem_object_unmap(nvbo, vma);
 164                                 pm_runtime_mark_last_busy(dev);
 165                         }
 166                         pm_runtime_put_autosuspend(dev);
 167                 }
 168         }
 169         ttm_bo_unreserve(&nvbo->bo);
 170 }
 171
 172 int
 173 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 174                 uint32_t tile_mode, uint32_t tile_flags,
 175                 struct nouveau_bo **pnvbo)
 176 {
 177         struct nouveau_drm *drm = cli->drm;
 178         struct nouveau_bo *nvbo;
 179         int ret;
 180
 181         if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 182                 domain |= NOUVEAU_GEM_DOMAIN_CPU;
 183
 184         nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 185                                 tile_flags);
 186         if (IS_ERR(nvbo))
 187                 return PTR_ERR(nvbo);
 188
 189         /* Initialize the embedded gem-object. We return a single gem-reference
 190          * to the caller, instead of a normal nouveau_bo ttm reference. */
 191         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 192         if (ret) {
 193                 nouveau_bo_ref(NULL, &nvbo);
 194                 return ret;
 195         }
 196
 197         ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
 198         if (ret) {
 199                 nouveau_bo_ref(NULL, &nvbo);
 200                 return ret;
 201         }
 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->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 210                 nvbo->valid_domains &= domain;
 211
 212         nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
 213         *pnvbo = nvbo;
 214         return 0;
 215 }
 216
 217 static int
 218 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 219                  struct drm_nouveau_gem_info *rep)
 220 {
 221         struct nouveau_cli *cli = nouveau_cli(file_priv);
 222         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 223         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 224         struct nouveau_vma *vma;
 225
 226         if (is_power_of_2(nvbo->valid_domains))
 227                 rep->domain = nvbo->valid_domains;
 228         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 229                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 230         else
 231                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 232         rep->offset = nvbo->offset;
 233         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 234                 vma = nouveau_vma_find(nvbo, vmm);
 235                 if (!vma)
 236                         return -EINVAL;
 237
 238                 rep->offset = vma->addr;
 239         }
 240
 241         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 242         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 243         rep->tile_mode = nvbo->mode;
 244         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 245         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 246                 rep->tile_flags |= nvbo->kind << 8;
 247         else
 248         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 249                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 250         else
 251                 rep->tile_flags |= nvbo->zeta;
 252         return 0;
 253 }
 254
 255 int
 256 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 257                       struct drm_file *file_priv)
 258 {
 259         struct nouveau_cli *cli = nouveau_cli(file_priv);
 260         struct drm_nouveau_gem_new *req = data;
 261         struct nouveau_bo *nvbo = NULL;
 262         int ret = 0;
 263
 264         ret = nouveau_gem_new(cli, req->info.size, req->align,
 265                               req->info.domain, req->info.tile_mode,
 266                               req->info.tile_flags, &nvbo);
 267         if (ret)
 268                 return ret;
 269
 270         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 271                                     &req->info.handle);
 272         if (ret == 0) {
 273                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 274                 if (ret)
 275                         drm_gem_handle_delete(file_priv, req->info.handle);
 276         }
 277
 278         /* drop reference from allocate - handle holds it now */
 279         drm_gem_object_put(&nvbo->bo.base);
 280         return ret;
 281 }
 282
 283 static int
 284 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 285                        uint32_t write_domains, uint32_t valid_domains)
 286 {
 287         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 288         struct ttm_buffer_object *bo = &nvbo->bo;
 289         uint32_t domains = valid_domains & nvbo->valid_domains &
 290                 (write_domains ? write_domains : read_domains);
 291         uint32_t pref_domains = 0;;
 292
 293         if (!domains)
 294                 return -EINVAL;
 295
 296         valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 297
 298         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 299             bo->mem.mem_type == TTM_PL_VRAM)
 300                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 301
 302         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 303                  bo->mem.mem_type == TTM_PL_TT)
 304                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 305
 306         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 307                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 308
 309         else
 310                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 311
 312         nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 313
 314         return 0;
 315 }
 316
 317 struct validate_op {
 318         struct list_head list;
 319         struct ww_acquire_ctx ticket;
 320 };
 321
 322 static void
 323 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 324                         struct nouveau_fence *fence,
 325                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 326 {
 327         struct nouveau_bo *nvbo;
 328         struct drm_nouveau_gem_pushbuf_bo *b;
 329
 330         while (!list_empty(&op->list)) {
 331                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 332                 b = &pbbo[nvbo->pbbo_index];
 333
 334                 if (likely(fence)) {
 335                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 336
 337                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 338                                 struct nouveau_vma *vma =
 339                                         (void *)(unsigned long)b->user_priv;
 340                                 nouveau_fence_unref(&vma->fence);
 341                                 dma_fence_get(&fence->base);
 342                                 vma->fence = fence;
 343                         }
 344                 }
 345
 346                 if (unlikely(nvbo->validate_mapped)) {
 347                         ttm_bo_kunmap(&nvbo->kmap);
 348                         nvbo->validate_mapped = false;
 349                 }
 350
 351                 list_del(&nvbo->entry);
 352                 nvbo->reserved_by = NULL;
 353                 ttm_bo_unreserve(&nvbo->bo);
 354                 drm_gem_object_put(&nvbo->bo.base);
 355         }
 356 }
 357
 358 static void
 359 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 360               struct nouveau_fence *fence,
 361               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 362 {
 363         validate_fini_no_ticket(op, chan, fence, pbbo);
 364         ww_acquire_fini(&op->ticket);
 365 }
 366
 367 static int
 368 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 369               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 370               int nr_buffers, struct validate_op *op)
 371 {
 372         struct nouveau_cli *cli = nouveau_cli(file_priv);
 373         int trycnt = 0;
 374         int ret = -EINVAL, i;
 375         struct nouveau_bo *res_bo = NULL;
 376         LIST_HEAD(gart_list);
 377         LIST_HEAD(vram_list);
 378         LIST_HEAD(both_list);
 379
 380         ww_acquire_init(&op->ticket, &reservation_ww_class);
 381 retry:
 382         if (++trycnt > 100000) {
 383                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 384                 return -EINVAL;
 385         }
 386
 387         for (i = 0; i < nr_buffers; i++) {
 388                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 389                 struct drm_gem_object *gem;
 390                 struct nouveau_bo *nvbo;
 391
 392                 gem = drm_gem_object_lookup(file_priv, b->handle);
 393                 if (!gem) {
 394                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 395                         ret = -ENOENT;
 396                         break;
 397                 }
 398                 nvbo = nouveau_gem_object(gem);
 399                 if (nvbo == res_bo) {
 400                         res_bo = NULL;
 401                         drm_gem_object_put(gem);
 402                         continue;
 403                 }
 404
 405                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 406                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 407                                       "validation list\n", b->handle);
 408                         drm_gem_object_put(gem);
 409                         ret = -EINVAL;
 410                         break;
 411                 }
 412
 413                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 414                 if (ret) {
 415                         list_splice_tail_init(&vram_list, &op->list);
 416                         list_splice_tail_init(&gart_list, &op->list);
 417                         list_splice_tail_init(&both_list, &op->list);
 418                         validate_fini_no_ticket(op, chan, NULL, NULL);
 419                         if (unlikely(ret == -EDEADLK)) {
 420                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 421                                                               &op->ticket);
 422                                 if (!ret)
 423                                         res_bo = nvbo;
 424                         }
 425                         if (unlikely(ret)) {
 426                                 if (ret != -ERESTARTSYS)
 427                                         NV_PRINTK(err, cli, "fail reserve\n");
 428                                 break;
 429                         }
 430                 }
 431
 432                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 433                         struct nouveau_vmm *vmm = chan->vmm;
 434                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 435                         if (!vma) {
 436                                 NV_PRINTK(err, cli, "vma not found!\n");
 437                                 ret = -EINVAL;
 438                                 break;
 439                         }
 440
 441                         b->user_priv = (uint64_t)(unsigned long)vma;
 442                 } else {
 443                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 444                 }
 445
 446                 nvbo->reserved_by = file_priv;
 447                 nvbo->pbbo_index = i;
 448                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 449                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 450                         list_add_tail(&nvbo->entry, &both_list);
 451                 else
 452                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 453                         list_add_tail(&nvbo->entry, &vram_list);
 454                 else
 455                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 456                         list_add_tail(&nvbo->entry, &gart_list);
 457                 else {
 458                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 459                                  b->valid_domains);
 460                         list_add_tail(&nvbo->entry, &both_list);
 461                         ret = -EINVAL;
 462                         break;
 463                 }
 464                 if (nvbo == res_bo)
 465                         goto retry;
 466         }
 467
 468         ww_acquire_done(&op->ticket);
 469         list_splice_tail(&vram_list, &op->list);
 470         list_splice_tail(&gart_list, &op->list);
 471         list_splice_tail(&both_list, &op->list);
 472         if (ret)
 473                 validate_fini(op, chan, NULL, NULL);
 474         return ret;
 475
 476 }
 477
 478 static int
 479 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 480               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 481 {
 482         struct nouveau_drm *drm = chan->drm;
 483         struct nouveau_bo *nvbo;
 484         int ret, relocs = 0;
 485
 486         list_for_each_entry(nvbo, list, entry) {
 487                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 488
 489                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 490                                              b->write_domains,
 491                                              b->valid_domains);
 492                 if (unlikely(ret)) {
 493                         NV_PRINTK(err, cli, "fail set_domain\n");
 494                         return ret;
 495                 }
 496
 497                 ret = nouveau_bo_validate(nvbo, true, false);
 498                 if (unlikely(ret)) {
 499                         if (ret != -ERESTARTSYS)
 500                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 501                         return ret;
 502                 }
 503
 504                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 505                 if (unlikely(ret)) {
 506                         if (ret != -ERESTARTSYS)
 507                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 508                         return ret;
 509                 }
 510
 511                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 512                         if (nvbo->offset == b->presumed.offset &&
 513                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 514                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 515                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 516                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 517                                 continue;
 518
 519                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 520                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 521                         else
 522                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 523                         b->presumed.offset = nvbo->offset;
 524                         b->presumed.valid = 0;
 525                         relocs++;
 526                 }
 527         }
 528
 529         return relocs;
 530 }
 531
 532 static int
 533 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 534                              struct drm_file *file_priv,
 535                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 536                              int nr_buffers,
 537                              struct validate_op *op, bool *apply_relocs)
 538 {
 539         struct nouveau_cli *cli = nouveau_cli(file_priv);
 540         int ret;
 541
 542         INIT_LIST_HEAD(&op->list);
 543
 544         if (nr_buffers == 0)
 545                 return 0;
 546
 547         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 548         if (unlikely(ret)) {
 549                 if (ret != -ERESTARTSYS)
 550                         NV_PRINTK(err, cli, "validate_init\n");
 551                 return ret;
 552         }
 553
 554         ret = validate_list(chan, cli, &op->list, pbbo);
 555         if (unlikely(ret < 0)) {
 556                 if (ret != -ERESTARTSYS)
 557                         NV_PRINTK(err, cli, "validating bo list\n");
 558                 validate_fini(op, chan, NULL, NULL);
 559                 return ret;
 560         }
 561         *apply_relocs = ret;
 562         return 0;
 563 }
 564
 565 static inline void
 566 u_free(void *addr)
 567 {
 568         kvfree(addr);
 569 }
 570
 571 static inline void *
 572 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 573 {
 574         void *mem;
 575         void __user *userptr = (void __force __user *)(uintptr_t)user;
 576
 577         size *= nmemb;
 578
 579         mem = kvmalloc(size, GFP_KERNEL);
 580         if (!mem)
 581                 return ERR_PTR(-ENOMEM);
 582
 583         if (copy_from_user(mem, userptr, size)) {
 584                 u_free(mem);
 585                 return ERR_PTR(-EFAULT);
 586         }
 587
 588         return mem;
 589 }
 590
 591 static int
 592 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 593                                 struct drm_nouveau_gem_pushbuf *req,
 594                                 struct drm_nouveau_gem_pushbuf_reloc *reloc,
 595                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 596 {
 597         int ret = 0;
 598         unsigned i;
 599
 600         for (i = 0; i < req->nr_relocs; i++) {
 601                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 602                 struct drm_nouveau_gem_pushbuf_bo *b;
 603                 struct nouveau_bo *nvbo;
 604                 uint32_t data;
 605
 606                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 607                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 608                         ret = -EINVAL;
 609                         break;
 610                 }
 611
 612                 b = &bo[r->bo_index];
 613                 if (b->presumed.valid)
 614                         continue;
 615
 616                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 617                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 618                         ret = -EINVAL;
 619                         break;
 620                 }
 621                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 622
 623                 if (unlikely(r->reloc_bo_offset + 4 >
 624                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 625                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 626                         ret = -EINVAL;
 627                         break;
 628                 }
 629
 630                 if (!nvbo->kmap.virtual) {
 631                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 632                                           &nvbo->kmap);
 633                         if (ret) {
 634                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 635                                 break;
 636                         }
 637                         nvbo->validate_mapped = true;
 638                 }
 639
 640                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 641                         data = b->presumed.offset + r->data;
 642                 else
 643                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 644                         data = (b->presumed.offset + r->data) >> 32;
 645                 else
 646                         data = r->data;
 647
 648                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 649                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 650                                 data |= r->tor;
 651                         else
 652                                 data |= r->vor;
 653                 }
 654
 655                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 656                 if (ret) {
 657                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 658                         break;
 659                 }
 660
 661                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 662         }
 663
 664         u_free(reloc);
 665         return ret;
 666 }
 667
 668 int
 669 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 670                           struct drm_file *file_priv)
 671 {
 672         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 673         struct nouveau_cli *cli = nouveau_cli(file_priv);
 674         struct nouveau_abi16_chan *temp;
 675         struct nouveau_drm *drm = nouveau_drm(dev);
 676         struct drm_nouveau_gem_pushbuf *req = data;
 677         struct drm_nouveau_gem_pushbuf_push *push;
 678         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 679         struct drm_nouveau_gem_pushbuf_bo *bo;
 680         struct nouveau_channel *chan = NULL;
 681         struct validate_op op;
 682         struct nouveau_fence *fence = NULL;
 683         int i, j, ret = 0;
 684         bool do_reloc = false, sync = false;
 685
 686         if (unlikely(!abi16))
 687                 return -ENOMEM;
 688
 689         list_for_each_entry(temp, &abi16->channels, head) {
 690                 if (temp->chan->chid == req->channel) {
 691                         chan = temp->chan;
 692                         break;
 693                 }
 694         }
 695
 696         if (!chan)
 697                 return nouveau_abi16_put(abi16, -ENOENT);
 698         if (unlikely(atomic_read(&chan->killed)))
 699                 return nouveau_abi16_put(abi16, -ENODEV);
 700
 701         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 702
 703         req->vram_available = drm->gem.vram_available;
 704         req->gart_available = drm->gem.gart_available;
 705         if (unlikely(req->nr_push == 0))
 706                 goto out_next;
 707
 708         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 709                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 710                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 711                 return nouveau_abi16_put(abi16, -EINVAL);
 712         }
 713
 714         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 715                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 716                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 717                 return nouveau_abi16_put(abi16, -EINVAL);
 718         }
 719
 720         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 721                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 722                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 723                 return nouveau_abi16_put(abi16, -EINVAL);
 724         }
 725
 726         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 727         if (IS_ERR(push))
 728                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 729
 730         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 731         if (IS_ERR(bo)) {
 732                 u_free(push);
 733                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 734         }
 735
 736         /* Ensure all push buffers are on validate list */
 737         for (i = 0; i < req->nr_push; i++) {
 738                 if (push[i].bo_index >= req->nr_buffers) {
 739                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 740                         ret = -EINVAL;
 741                         goto out_prevalid;
 742                 }
 743         }
 744
 745         /* Validate buffer list */
 746 revalidate:
 747         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 748                                            req->nr_buffers, &op, &do_reloc);
 749         if (ret) {
 750                 if (ret != -ERESTARTSYS)
 751                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 752                 goto out_prevalid;
 753         }
 754
 755         /* Apply any relocations that are required */
 756         if (do_reloc) {
 757                 if (!reloc) {
 758                         validate_fini(&op, chan, NULL, bo);
 759                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 760                         if (IS_ERR(reloc)) {
 761                                 ret = PTR_ERR(reloc);
 762                                 goto out_prevalid;
 763                         }
 764
 765                         goto revalidate;
 766                 }
 767
 768                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 769                 if (ret) {
 770                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 771                         goto out;
 772                 }
 773         }
 774
 775         if (chan->dma.ib_max) {
 776                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 777                 if (ret) {
 778                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 779                         goto out;
 780                 }
 781
 782                 for (i = 0; i < req->nr_push; i++) {
 783                         struct nouveau_vma *vma = (void *)(unsigned long)
 784                                 bo[push[i].bo_index].user_priv;
 785
 786                         nv50_dma_push(chan, vma->addr + push[i].offset,
 787                                       push[i].length);
 788                 }
 789         } else
 790         if (drm->client.device.info.chipset >= 0x25) {
 791                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
 792                 if (ret) {
 793                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 794                         goto out;
 795                 }
 796
 797                 for (i = 0; i < req->nr_push; i++) {
 798                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 799                                 bo[push[i].bo_index].user_priv;
 800
 801                         PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
 802                         PUSH_DATA(chan->chan.push, 0);
 803                 }
 804         } else {
 805                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 806                 if (ret) {
 807                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 808                         goto out;
 809                 }
 810
 811                 for (i = 0; i < req->nr_push; i++) {
 812                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 813                                 bo[push[i].bo_index].user_priv;
 814                         uint32_t cmd;
 815
 816                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 817                         cmd |= 0x20000000;
 818                         if (unlikely(cmd != req->suffix0)) {
 819                                 if (!nvbo->kmap.virtual) {
 820                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 821                                                           nvbo->bo.mem.
 822                                                           num_pages,
 823                                                           &nvbo->kmap);
 824                                         if (ret) {
 825                                                 WIND_RING(chan);
 826                                                 goto out;
 827                                         }
 828                                         nvbo->validate_mapped = true;
 829                                 }
 830
 831                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 832                                                 push[i].length - 8) / 4, cmd);
 833                         }
 834
 835                         PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
 836                         PUSH_DATA(chan->chan.push, 0);
 837                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 838                                 PUSH_DATA(chan->chan.push, 0);
 839                 }
 840         }
 841
 842         ret = nouveau_fence_new(chan, false, &fence);
 843         if (ret) {
 844                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 845                 WIND_RING(chan);
 846                 goto out;
 847         }
 848
 849         if (sync) {
 850                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 851                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 852                                 ret = 0;
 853                 }
 854         }
 855
 856 out:
 857         validate_fini(&op, chan, fence, bo);
 858         nouveau_fence_unref(&fence);
 859
 860         if (do_reloc) {
 861                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 862                         u64_to_user_ptr(req->buffers);
 863
 864                 for (i = 0; i < req->nr_buffers; i++) {
 865                         if (bo[i].presumed.valid)
 866                                 continue;
 867
 868                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 869                                          sizeof(bo[i].presumed))) {
 870                                 ret = -EFAULT;
 871                                 break;
 872                         }
 873                 }
 874                 u_free(reloc);
 875         }
 876 out_prevalid:
 877         u_free(bo);
 878         u_free(push);
 879
 880 out_next:
 881         if (chan->dma.ib_max) {
 882                 req->suffix0 = 0x00000000;
 883                 req->suffix1 = 0x00000000;
 884         } else
 885         if (drm->client.device.info.chipset >= 0x25) {
 886                 req->suffix0 = 0x00020000;
 887                 req->suffix1 = 0x00000000;
 888         } else {
 889                 req->suffix0 = 0x20000000 |
 890                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 891                 req->suffix1 = 0x00000000;
 892         }
 893
 894         return nouveau_abi16_put(abi16, ret);
 895 }
 896
 897 int
 898 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 899                            struct drm_file *file_priv)
 900 {
 901         struct drm_nouveau_gem_cpu_prep *req = data;
 902         struct drm_gem_object *gem;
 903         struct nouveau_bo *nvbo;
 904         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 905         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 906         long lret;
 907         int ret;
 908
 909         gem = drm_gem_object_lookup(file_priv, req->handle);
 910         if (!gem)
 911                 return -ENOENT;
 912         nvbo = nouveau_gem_object(gem);
 913
 914         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 915                                                    no_wait ? 0 : 30 * HZ);
 916         if (!lret)
 917                 ret = -EBUSY;
 918         else if (lret > 0)
 919                 ret = 0;
 920         else
 921                 ret = lret;
 922
 923         nouveau_bo_sync_for_cpu(nvbo);
 924         drm_gem_object_put(gem);
 925
 926         return ret;
 927 }
 928
 929 int
 930 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 931                            struct drm_file *file_priv)
 932 {
 933         struct drm_nouveau_gem_cpu_fini *req = data;
 934         struct drm_gem_object *gem;
 935         struct nouveau_bo *nvbo;
 936
 937         gem = drm_gem_object_lookup(file_priv, req->handle);
 938         if (!gem)
 939                 return -ENOENT;
 940         nvbo = nouveau_gem_object(gem);
 941
 942         nouveau_bo_sync_for_device(nvbo);
 943         drm_gem_object_put(gem);
 944         return 0;
 945 }
 946
 947 int
 948 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 949                        struct drm_file *file_priv)
 950 {
 951         struct drm_nouveau_gem_info *req = data;
 952         struct drm_gem_object *gem;
 953         int ret;
 954
 955         gem = drm_gem_object_lookup(file_priv, req->handle);
 956         if (!gem)
 957                 return -ENOENT;
 958
 959         ret = nouveau_gem_info(file_priv, gem, req);
 960         drm_gem_object_put(gem);
 961         return ret;
 962 }
 963