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
  39 void
  40 nouveau_gem_object_del(struct drm_gem_object *gem)
  41 {
  42         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  43         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  44         struct device *dev = drm->dev->dev;
  45         int ret;
  46
  47         ret = pm_runtime_get_sync(dev);
  48         if (WARN_ON(ret < 0 && ret != -EACCES))
  49                 return;
  50
  51         if (gem->import_attach)
  52                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  53
  54         drm_gem_object_release(gem);
  55
  56         /* reset filp so nouveau_bo_del_ttm() can test for it */
  57         gem->filp = NULL;
  58         ttm_bo_put(&nvbo->bo);
  59
  60         pm_runtime_mark_last_busy(dev);
  61         pm_runtime_put_autosuspend(dev);
  62 }
  63
  64 int
  65 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  66 {
  67         struct nouveau_cli *cli = nouveau_cli(file_priv);
  68         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  69         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  70         struct device *dev = drm->dev->dev;
  71         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  72         struct nouveau_vma *vma;
  73         int ret;
  74
  75         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
  76                 return 0;
  77
  78         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  79         if (ret)
  80                 return ret;
  81
  82         ret = pm_runtime_get_sync(dev);
  83         if (ret < 0 && ret != -EACCES)
  84                 goto out;
  85
  86         ret = nouveau_vma_new(nvbo, vmm, &vma);
  87         pm_runtime_mark_last_busy(dev);
  88         pm_runtime_put_autosuspend(dev);
  89 out:
  90         ttm_bo_unreserve(&nvbo->bo);
  91         return ret;
  92 }
  93
  94 struct nouveau_gem_object_unmap {
  95         struct nouveau_cli_work work;
  96         struct nouveau_vma *vma;
  97 };
  98
  99 static void
 100 nouveau_gem_object_delete(struct nouveau_vma *vma)
 101 {
 102         nouveau_fence_unref(&vma->fence);
 103         nouveau_vma_del(&vma);
 104 }
 105
 106 static void
 107 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 108 {
 109         struct nouveau_gem_object_unmap *work =
 110                 container_of(w, typeof(*work), work);
 111         nouveau_gem_object_delete(work->vma);
 112         kfree(work);
 113 }
 114
 115 static void
 116 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 117 {
 118         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 119         struct nouveau_gem_object_unmap *work;
 120
 121         list_del_init(&vma->head);
 122
 123         if (!fence) {
 124                 nouveau_gem_object_delete(vma);
 125                 return;
 126         }
 127
 128         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 129                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 130                 nouveau_gem_object_delete(vma);
 131                 return;
 132         }
 133
 134         work->work.func = nouveau_gem_object_delete_work;
 135         work->vma = vma;
 136         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 137 }
 138
 139 void
 140 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 141 {
 142         struct nouveau_cli *cli = nouveau_cli(file_priv);
 143         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 144         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 145         struct device *dev = drm->dev->dev;
 146         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 147         struct nouveau_vma *vma;
 148         int ret;
 149
 150         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 151                 return;
 152
 153         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 154         if (ret)
 155                 return;
 156
 157         vma = nouveau_vma_find(nvbo, vmm);
 158         if (vma) {
 159                 if (--vma->refs == 0) {
 160                         ret = pm_runtime_get_sync(dev);
 161                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 162                                 nouveau_gem_object_unmap(nvbo, vma);
 163                                 pm_runtime_mark_last_busy(dev);
 164                                 pm_runtime_put_autosuspend(dev);
 165                         }
 166                 }
 167         }
 168         ttm_bo_unreserve(&nvbo->bo);
 169 }
 170
 171 int
 172 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 173                 uint32_t tile_mode, uint32_t tile_flags,
 174                 struct nouveau_bo **pnvbo)
 175 {
 176         struct nouveau_drm *drm = cli->drm;
 177         struct nouveau_bo *nvbo;
 178         u32 flags = 0;
 179         int ret;
 180
 181         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 182                 flags |= TTM_PL_FLAG_VRAM;
 183         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 184                 flags |= TTM_PL_FLAG_TT;
 185         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 186                 flags |= TTM_PL_FLAG_SYSTEM;
 187
 188         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 189                 flags |= TTM_PL_FLAG_UNCACHED;
 190
 191         ret = nouveau_bo_new(cli, size, align, flags, tile_mode,
 192                              tile_flags, NULL, NULL, pnvbo);
 193         if (ret)
 194                 return ret;
 195         nvbo = *pnvbo;
 196
 197         /* we restrict allowed domains on nv50+ to only the types
 198          * that were requested at creation time.  not possibly on
 199          * earlier chips without busting the ABI.
 200          */
 201         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 202                               NOUVEAU_GEM_DOMAIN_GART;
 203         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 204                 nvbo->valid_domains &= domain;
 205
 206         /* Initialize the embedded gem-object. We return a single gem-reference
 207          * to the caller, instead of a normal nouveau_bo ttm reference. */
 208         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, nvbo->bo.mem.size);
 209         if (ret) {
 210                 nouveau_bo_ref(NULL, pnvbo);
 211                 return -ENOMEM;
 212         }
 213
 214         nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
 215         return 0;
 216 }
 217
 218 static int
 219 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 220                  struct drm_nouveau_gem_info *rep)
 221 {
 222         struct nouveau_cli *cli = nouveau_cli(file_priv);
 223         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 224         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 225         struct nouveau_vma *vma;
 226
 227         if (is_power_of_2(nvbo->valid_domains))
 228                 rep->domain = nvbo->valid_domains;
 229         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 230                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 231         else
 232                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 233         rep->offset = nvbo->bo.offset;
 234         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 235                 vma = nouveau_vma_find(nvbo, vmm);
 236                 if (!vma)
 237                         return -EINVAL;
 238
 239                 rep->offset = vma->addr;
 240         }
 241
 242         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 243         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 244         rep->tile_mode = nvbo->mode;
 245         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 246         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 247                 rep->tile_flags |= nvbo->kind << 8;
 248         else
 249         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 250                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 251         else
 252                 rep->tile_flags |= nvbo->zeta;
 253         return 0;
 254 }
 255
 256 int
 257 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 258                       struct drm_file *file_priv)
 259 {
 260         struct nouveau_cli *cli = nouveau_cli(file_priv);
 261         struct drm_nouveau_gem_new *req = data;
 262         struct nouveau_bo *nvbo = NULL;
 263         int ret = 0;
 264
 265         ret = nouveau_gem_new(cli, req->info.size, req->align,
 266                               req->info.domain, req->info.tile_mode,
 267                               req->info.tile_flags, &nvbo);
 268         if (ret)
 269                 return ret;
 270
 271         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 272                                     &req->info.handle);
 273         if (ret == 0) {
 274                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 275                 if (ret)
 276                         drm_gem_handle_delete(file_priv, req->info.handle);
 277         }
 278
 279         /* drop reference from allocate - handle holds it now */
 280         drm_gem_object_put_unlocked(&nvbo->bo.base);
 281         return ret;
 282 }
 283
 284 static int
 285 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 286                        uint32_t write_domains, uint32_t valid_domains)
 287 {
 288         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 289         struct ttm_buffer_object *bo = &nvbo->bo;
 290         uint32_t domains = valid_domains & nvbo->valid_domains &
 291                 (write_domains ? write_domains : read_domains);
 292         uint32_t pref_flags = 0, valid_flags = 0;
 293
 294         if (!domains)
 295                 return -EINVAL;
 296
 297         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 298                 valid_flags |= TTM_PL_FLAG_VRAM;
 299
 300         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 301                 valid_flags |= TTM_PL_FLAG_TT;
 302
 303         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 304             bo->mem.mem_type == TTM_PL_VRAM)
 305                 pref_flags |= TTM_PL_FLAG_VRAM;
 306
 307         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 308                  bo->mem.mem_type == TTM_PL_TT)
 309                 pref_flags |= TTM_PL_FLAG_TT;
 310
 311         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 312                 pref_flags |= TTM_PL_FLAG_VRAM;
 313
 314         else
 315                 pref_flags |= TTM_PL_FLAG_TT;
 316
 317         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 318
 319         return 0;
 320 }
 321
 322 struct validate_op {
 323         struct list_head list;
 324         struct ww_acquire_ctx ticket;
 325 };
 326
 327 static void
 328 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 329                         struct nouveau_fence *fence,
 330                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 331 {
 332         struct nouveau_bo *nvbo;
 333         struct drm_nouveau_gem_pushbuf_bo *b;
 334
 335         while (!list_empty(&op->list)) {
 336                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 337                 b = &pbbo[nvbo->pbbo_index];
 338
 339                 if (likely(fence)) {
 340                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 341
 342                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 343                                 struct nouveau_vma *vma =
 344                                         (void *)(unsigned long)b->user_priv;
 345                                 nouveau_fence_unref(&vma->fence);
 346                                 dma_fence_get(&fence->base);
 347                                 vma->fence = fence;
 348                         }
 349                 }
 350
 351                 if (unlikely(nvbo->validate_mapped)) {
 352                         ttm_bo_kunmap(&nvbo->kmap);
 353                         nvbo->validate_mapped = false;
 354                 }
 355
 356                 list_del(&nvbo->entry);
 357                 nvbo->reserved_by = NULL;
 358                 ttm_bo_unreserve(&nvbo->bo);
 359                 drm_gem_object_put_unlocked(&nvbo->bo.base);
 360         }
 361 }
 362
 363 static void
 364 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 365               struct nouveau_fence *fence,
 366               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 367 {
 368         validate_fini_no_ticket(op, chan, fence, pbbo);
 369         ww_acquire_fini(&op->ticket);
 370 }
 371
 372 static int
 373 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 374               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 375               int nr_buffers, struct validate_op *op)
 376 {
 377         struct nouveau_cli *cli = nouveau_cli(file_priv);
 378         int trycnt = 0;
 379         int ret = -EINVAL, i;
 380         struct nouveau_bo *res_bo = NULL;
 381         LIST_HEAD(gart_list);
 382         LIST_HEAD(vram_list);
 383         LIST_HEAD(both_list);
 384
 385         ww_acquire_init(&op->ticket, &reservation_ww_class);
 386 retry:
 387         if (++trycnt > 100000) {
 388                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 389                 return -EINVAL;
 390         }
 391
 392         for (i = 0; i < nr_buffers; i++) {
 393                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 394                 struct drm_gem_object *gem;
 395                 struct nouveau_bo *nvbo;
 396
 397                 gem = drm_gem_object_lookup(file_priv, b->handle);
 398                 if (!gem) {
 399                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 400                         ret = -ENOENT;
 401                         break;
 402                 }
 403                 nvbo = nouveau_gem_object(gem);
 404                 if (nvbo == res_bo) {
 405                         res_bo = NULL;
 406                         drm_gem_object_put_unlocked(gem);
 407                         continue;
 408                 }
 409
 410                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 411                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 412                                       "validation list\n", b->handle);
 413                         drm_gem_object_put_unlocked(gem);
 414                         ret = -EINVAL;
 415                         break;
 416                 }
 417
 418                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 419                 if (ret) {
 420                         list_splice_tail_init(&vram_list, &op->list);
 421                         list_splice_tail_init(&gart_list, &op->list);
 422                         list_splice_tail_init(&both_list, &op->list);
 423                         validate_fini_no_ticket(op, chan, NULL, NULL);
 424                         if (unlikely(ret == -EDEADLK)) {
 425                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 426                                                               &op->ticket);
 427                                 if (!ret)
 428                                         res_bo = nvbo;
 429                         }
 430                         if (unlikely(ret)) {
 431                                 if (ret != -ERESTARTSYS)
 432                                         NV_PRINTK(err, cli, "fail reserve\n");
 433                                 break;
 434                         }
 435                 }
 436
 437                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 438                         struct nouveau_vmm *vmm = chan->vmm;
 439                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 440                         if (!vma) {
 441                                 NV_PRINTK(err, cli, "vma not found!\n");
 442                                 ret = -EINVAL;
 443                                 break;
 444                         }
 445
 446                         b->user_priv = (uint64_t)(unsigned long)vma;
 447                 } else {
 448                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 449                 }
 450
 451                 nvbo->reserved_by = file_priv;
 452                 nvbo->pbbo_index = i;
 453                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 454                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 455                         list_add_tail(&nvbo->entry, &both_list);
 456                 else
 457                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 458                         list_add_tail(&nvbo->entry, &vram_list);
 459                 else
 460                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 461                         list_add_tail(&nvbo->entry, &gart_list);
 462                 else {
 463                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 464                                  b->valid_domains);
 465                         list_add_tail(&nvbo->entry, &both_list);
 466                         ret = -EINVAL;
 467                         break;
 468                 }
 469                 if (nvbo == res_bo)
 470                         goto retry;
 471         }
 472
 473         ww_acquire_done(&op->ticket);
 474         list_splice_tail(&vram_list, &op->list);
 475         list_splice_tail(&gart_list, &op->list);
 476         list_splice_tail(&both_list, &op->list);
 477         if (ret)
 478                 validate_fini(op, chan, NULL, NULL);
 479         return ret;
 480
 481 }
 482
 483 static int
 484 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 485               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 486               uint64_t user_pbbo_ptr)
 487 {
 488         struct nouveau_drm *drm = chan->drm;
 489         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 490                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 491         struct nouveau_bo *nvbo;
 492         int ret, relocs = 0;
 493
 494         list_for_each_entry(nvbo, list, entry) {
 495                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 496
 497                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 498                                              b->write_domains,
 499                                              b->valid_domains);
 500                 if (unlikely(ret)) {
 501                         NV_PRINTK(err, cli, "fail set_domain\n");
 502                         return ret;
 503                 }
 504
 505                 ret = nouveau_bo_validate(nvbo, true, false);
 506                 if (unlikely(ret)) {
 507                         if (ret != -ERESTARTSYS)
 508                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 509                         return ret;
 510                 }
 511
 512                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 513                 if (unlikely(ret)) {
 514                         if (ret != -ERESTARTSYS)
 515                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 516                         return ret;
 517                 }
 518
 519                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 520                         if (nvbo->bo.offset == b->presumed.offset &&
 521                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 522                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 523                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 524                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 525                                 continue;
 526
 527                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 528                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 529                         else
 530                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 531                         b->presumed.offset = nvbo->bo.offset;
 532                         b->presumed.valid = 0;
 533                         relocs++;
 534
 535                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 536                                              &b->presumed, sizeof(b->presumed)))
 537                                 return -EFAULT;
 538                 }
 539         }
 540
 541         return relocs;
 542 }
 543
 544 static int
 545 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 546                              struct drm_file *file_priv,
 547                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 548                              uint64_t user_buffers, int nr_buffers,
 549                              struct validate_op *op, int *apply_relocs)
 550 {
 551         struct nouveau_cli *cli = nouveau_cli(file_priv);
 552         int ret;
 553
 554         INIT_LIST_HEAD(&op->list);
 555
 556         if (nr_buffers == 0)
 557                 return 0;
 558
 559         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 560         if (unlikely(ret)) {
 561                 if (ret != -ERESTARTSYS)
 562                         NV_PRINTK(err, cli, "validate_init\n");
 563                 return ret;
 564         }
 565
 566         ret = validate_list(chan, cli, &op->list, pbbo, user_buffers);
 567         if (unlikely(ret < 0)) {
 568                 if (ret != -ERESTARTSYS)
 569                         NV_PRINTK(err, cli, "validating bo list\n");
 570                 validate_fini(op, chan, NULL, NULL);
 571                 return ret;
 572         }
 573         *apply_relocs = ret;
 574         return 0;
 575 }
 576
 577 static inline void
 578 u_free(void *addr)
 579 {
 580         kvfree(addr);
 581 }
 582
 583 static inline void *
 584 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 585 {
 586         void *mem;
 587         void __user *userptr = (void __force __user *)(uintptr_t)user;
 588
 589         size *= nmemb;
 590
 591         mem = kvmalloc(size, GFP_KERNEL);
 592         if (!mem)
 593                 return ERR_PTR(-ENOMEM);
 594
 595         if (copy_from_user(mem, userptr, size)) {
 596                 u_free(mem);
 597                 return ERR_PTR(-EFAULT);
 598         }
 599
 600         return mem;
 601 }
 602
 603 static int
 604 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 605                                 struct drm_nouveau_gem_pushbuf *req,
 606                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 607 {
 608         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 609         int ret = 0;
 610         unsigned i;
 611
 612         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 613         if (IS_ERR(reloc))
 614                 return PTR_ERR(reloc);
 615
 616         for (i = 0; i < req->nr_relocs; i++) {
 617                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 618                 struct drm_nouveau_gem_pushbuf_bo *b;
 619                 struct nouveau_bo *nvbo;
 620                 uint32_t data;
 621
 622                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 623                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 624                         ret = -EINVAL;
 625                         break;
 626                 }
 627
 628                 b = &bo[r->bo_index];
 629                 if (b->presumed.valid)
 630                         continue;
 631
 632                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 633                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 634                         ret = -EINVAL;
 635                         break;
 636                 }
 637                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 638
 639                 if (unlikely(r->reloc_bo_offset + 4 >
 640                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 641                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 642                         ret = -EINVAL;
 643                         break;
 644                 }
 645
 646                 if (!nvbo->kmap.virtual) {
 647                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 648                                           &nvbo->kmap);
 649                         if (ret) {
 650                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 651                                 break;
 652                         }
 653                         nvbo->validate_mapped = true;
 654                 }
 655
 656                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 657                         data = b->presumed.offset + r->data;
 658                 else
 659                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 660                         data = (b->presumed.offset + r->data) >> 32;
 661                 else
 662                         data = r->data;
 663
 664                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 665                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 666                                 data |= r->tor;
 667                         else
 668                                 data |= r->vor;
 669                 }
 670
 671                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 672                 if (ret) {
 673                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 674                         break;
 675                 }
 676
 677                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 678         }
 679
 680         u_free(reloc);
 681         return ret;
 682 }
 683
 684 int
 685 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 686                           struct drm_file *file_priv)
 687 {
 688         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 689         struct nouveau_cli *cli = nouveau_cli(file_priv);
 690         struct nouveau_abi16_chan *temp;
 691         struct nouveau_drm *drm = nouveau_drm(dev);
 692         struct drm_nouveau_gem_pushbuf *req = data;
 693         struct drm_nouveau_gem_pushbuf_push *push;
 694         struct drm_nouveau_gem_pushbuf_bo *bo;
 695         struct nouveau_channel *chan = NULL;
 696         struct validate_op op;
 697         struct nouveau_fence *fence = NULL;
 698         int i, j, ret = 0, do_reloc = 0;
 699
 700         if (unlikely(!abi16))
 701                 return -ENOMEM;
 702
 703         list_for_each_entry(temp, &abi16->channels, head) {
 704                 if (temp->chan->chid == req->channel) {
 705                         chan = temp->chan;
 706                         break;
 707                 }
 708         }
 709
 710         if (!chan)
 711                 return nouveau_abi16_put(abi16, -ENOENT);
 712
 713         req->vram_available = drm->gem.vram_available;
 714         req->gart_available = drm->gem.gart_available;
 715         if (unlikely(req->nr_push == 0))
 716                 goto out_next;
 717
 718         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 719                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 720                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 721                 return nouveau_abi16_put(abi16, -EINVAL);
 722         }
 723
 724         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 725                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 726                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 727                 return nouveau_abi16_put(abi16, -EINVAL);
 728         }
 729
 730         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 731                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 732                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 733                 return nouveau_abi16_put(abi16, -EINVAL);
 734         }
 735
 736         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 737         if (IS_ERR(push))
 738                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 739
 740         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 741         if (IS_ERR(bo)) {
 742                 u_free(push);
 743                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 744         }
 745
 746         /* Ensure all push buffers are on validate list */
 747         for (i = 0; i < req->nr_push; i++) {
 748                 if (push[i].bo_index >= req->nr_buffers) {
 749                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 750                         ret = -EINVAL;
 751                         goto out_prevalid;
 752                 }
 753         }
 754
 755         /* Validate buffer list */
 756         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 757                                            req->nr_buffers, &op, &do_reloc);
 758         if (ret) {
 759                 if (ret != -ERESTARTSYS)
 760                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 761                 goto out_prevalid;
 762         }
 763
 764         /* Apply any relocations that are required */
 765         if (do_reloc) {
 766                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 767                 if (ret) {
 768                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 769                         goto out;
 770                 }
 771         }
 772
 773         if (chan->dma.ib_max) {
 774                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 775                 if (ret) {
 776                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 777                         goto out;
 778                 }
 779
 780                 for (i = 0; i < req->nr_push; i++) {
 781                         struct nouveau_vma *vma = (void *)(unsigned long)
 782                                 bo[push[i].bo_index].user_priv;
 783
 784                         nv50_dma_push(chan, vma->addr + push[i].offset,
 785                                       push[i].length);
 786                 }
 787         } else
 788         if (drm->client.device.info.chipset >= 0x25) {
 789                 ret = RING_SPACE(chan, req->nr_push * 2);
 790                 if (ret) {
 791                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 792                         goto out;
 793                 }
 794
 795                 for (i = 0; i < req->nr_push; i++) {
 796                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 797                                 bo[push[i].bo_index].user_priv;
 798
 799                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 800                         OUT_RING(chan, 0);
 801                 }
 802         } else {
 803                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 804                 if (ret) {
 805                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 806                         goto out;
 807                 }
 808
 809                 for (i = 0; i < req->nr_push; i++) {
 810                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 811                                 bo[push[i].bo_index].user_priv;
 812                         uint32_t cmd;
 813
 814                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 815                         cmd |= 0x20000000;
 816                         if (unlikely(cmd != req->suffix0)) {
 817                                 if (!nvbo->kmap.virtual) {
 818                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 819                                                           nvbo->bo.mem.
 820                                                           num_pages,
 821                                                           &nvbo->kmap);
 822                                         if (ret) {
 823                                                 WIND_RING(chan);
 824                                                 goto out;
 825                                         }
 826                                         nvbo->validate_mapped = true;
 827                                 }
 828
 829                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 830                                                 push[i].length - 8) / 4, cmd);
 831                         }
 832
 833                         OUT_RING(chan, 0x20000000 |
 834                                       (nvbo->bo.offset + push[i].offset));
 835                         OUT_RING(chan, 0);
 836                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 837                                 OUT_RING(chan, 0);
 838                 }
 839         }
 840
 841         ret = nouveau_fence_new(chan, false, &fence);
 842         if (ret) {
 843                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 844                 WIND_RING(chan);
 845                 goto out;
 846         }
 847
 848 out:
 849         validate_fini(&op, chan, fence, bo);
 850         nouveau_fence_unref(&fence);
 851
 852 out_prevalid:
 853         u_free(bo);
 854         u_free(push);
 855
 856 out_next:
 857         if (chan->dma.ib_max) {
 858                 req->suffix0 = 0x00000000;
 859                 req->suffix1 = 0x00000000;
 860         } else
 861         if (drm->client.device.info.chipset >= 0x25) {
 862                 req->suffix0 = 0x00020000;
 863                 req->suffix1 = 0x00000000;
 864         } else {
 865                 req->suffix0 = 0x20000000 |
 866                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 867                 req->suffix1 = 0x00000000;
 868         }
 869
 870         return nouveau_abi16_put(abi16, ret);
 871 }
 872
 873 int
 874 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 875                            struct drm_file *file_priv)
 876 {
 877         struct drm_nouveau_gem_cpu_prep *req = data;
 878         struct drm_gem_object *gem;
 879         struct nouveau_bo *nvbo;
 880         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 881         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 882         long lret;
 883         int ret;
 884
 885         gem = drm_gem_object_lookup(file_priv, req->handle);
 886         if (!gem)
 887                 return -ENOENT;
 888         nvbo = nouveau_gem_object(gem);
 889
 890         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 891                                                    no_wait ? 0 : 30 * HZ);
 892         if (!lret)
 893                 ret = -EBUSY;
 894         else if (lret > 0)
 895                 ret = 0;
 896         else
 897                 ret = lret;
 898
 899         nouveau_bo_sync_for_cpu(nvbo);
 900         drm_gem_object_put_unlocked(gem);
 901
 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         struct drm_nouveau_gem_cpu_fini *req = data;
 910         struct drm_gem_object *gem;
 911         struct nouveau_bo *nvbo;
 912
 913         gem = drm_gem_object_lookup(file_priv, req->handle);
 914         if (!gem)
 915                 return -ENOENT;
 916         nvbo = nouveau_gem_object(gem);
 917
 918         nouveau_bo_sync_for_device(nvbo);
 919         drm_gem_object_put_unlocked(gem);
 920         return 0;
 921 }
 922
 923 int
 924 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 925                        struct drm_file *file_priv)
 926 {
 927         struct drm_nouveau_gem_info *req = data;
 928         struct drm_gem_object *gem;
 929         int ret;
 930
 931         gem = drm_gem_object_lookup(file_priv, req->handle);
 932         if (!gem)
 933                 return -ENOENT;
 934
 935         ret = nouveau_gem_info(file_priv, gem, req);
 936         drm_gem_object_put_unlocked(gem);
 937         return ret;
 938 }
 939