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         ttm_bo_put(&nvbo->bo);
  55
  56         pm_runtime_mark_last_busy(dev);
  57         pm_runtime_put_autosuspend(dev);
  58 }
  59
  60 int
  61 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  62 {
  63         struct nouveau_cli *cli = nouveau_cli(file_priv);
  64         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  65         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  66         struct device *dev = drm->dev->dev;
  67         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  68         struct nouveau_vma *vma;
  69         int ret;
  70
  71         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
  72                 return 0;
  73
  74         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  75         if (ret)
  76                 return ret;
  77
  78         ret = pm_runtime_get_sync(dev);
  79         if (ret < 0 && ret != -EACCES)
  80                 goto out;
  81
  82         ret = nouveau_vma_new(nvbo, vmm, &vma);
  83         pm_runtime_mark_last_busy(dev);
  84         pm_runtime_put_autosuspend(dev);
  85 out:
  86         ttm_bo_unreserve(&nvbo->bo);
  87         return ret;
  88 }
  89
  90 struct nouveau_gem_object_unmap {
  91         struct nouveau_cli_work work;
  92         struct nouveau_vma *vma;
  93 };
  94
  95 static void
  96 nouveau_gem_object_delete(struct nouveau_vma *vma)
  97 {
  98         nouveau_fence_unref(&vma->fence);
  99         nouveau_vma_del(&vma);
 100 }
 101
 102 static void
 103 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 104 {
 105         struct nouveau_gem_object_unmap *work =
 106                 container_of(w, typeof(*work), work);
 107         nouveau_gem_object_delete(work->vma);
 108         kfree(work);
 109 }
 110
 111 static void
 112 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 113 {
 114         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 115         struct nouveau_gem_object_unmap *work;
 116
 117         list_del_init(&vma->head);
 118
 119         if (!fence) {
 120                 nouveau_gem_object_delete(vma);
 121                 return;
 122         }
 123
 124         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 125                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 126                 nouveau_gem_object_delete(vma);
 127                 return;
 128         }
 129
 130         work->work.func = nouveau_gem_object_delete_work;
 131         work->vma = vma;
 132         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 133 }
 134
 135 void
 136 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 137 {
 138         struct nouveau_cli *cli = nouveau_cli(file_priv);
 139         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 140         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 141         struct device *dev = drm->dev->dev;
 142         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 143         struct nouveau_vma *vma;
 144         int ret;
 145
 146         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 147                 return;
 148
 149         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 150         if (ret)
 151                 return;
 152
 153         vma = nouveau_vma_find(nvbo, vmm);
 154         if (vma) {
 155                 if (--vma->refs == 0) {
 156                         ret = pm_runtime_get_sync(dev);
 157                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 158                                 nouveau_gem_object_unmap(nvbo, vma);
 159                                 pm_runtime_mark_last_busy(dev);
 160                                 pm_runtime_put_autosuspend(dev);
 161                         }
 162                 }
 163         }
 164         ttm_bo_unreserve(&nvbo->bo);
 165 }
 166
 167 int
 168 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 169                 uint32_t tile_mode, uint32_t tile_flags,
 170                 struct nouveau_bo **pnvbo)
 171 {
 172         struct nouveau_drm *drm = cli->drm;
 173         struct nouveau_bo *nvbo;
 174         u32 flags = 0;
 175         int ret;
 176
 177         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 178                 flags |= TTM_PL_FLAG_VRAM;
 179         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 180                 flags |= TTM_PL_FLAG_TT;
 181         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 182                 flags |= TTM_PL_FLAG_SYSTEM;
 183
 184         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 185                 flags |= TTM_PL_FLAG_UNCACHED;
 186
 187         nvbo = nouveau_bo_alloc(cli, &size, &align, flags, tile_mode,
 188                                 tile_flags);
 189         if (IS_ERR(nvbo))
 190                 return PTR_ERR(nvbo);
 191
 192         /* Initialize the embedded gem-object. We return a single gem-reference
 193          * to the caller, instead of a normal nouveau_bo ttm reference. */
 194         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 195         if (ret) {
 196                 nouveau_bo_ref(NULL, &nvbo);
 197                 return ret;
 198         }
 199
 200         ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
 201         if (ret) {
 202                 nouveau_bo_ref(NULL, &nvbo);
 203                 return ret;
 204         }
 205
 206         /* we restrict allowed domains on nv50+ to only the types
 207          * that were requested at creation time.  not possibly on
 208          * earlier chips without busting the ABI.
 209          */
 210         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 211                               NOUVEAU_GEM_DOMAIN_GART;
 212         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 213                 nvbo->valid_domains &= domain;
 214
 215         nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
 216         *pnvbo = nvbo;
 217         return 0;
 218 }
 219
 220 static int
 221 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 222                  struct drm_nouveau_gem_info *rep)
 223 {
 224         struct nouveau_cli *cli = nouveau_cli(file_priv);
 225         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 226         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 227         struct nouveau_vma *vma;
 228
 229         if (is_power_of_2(nvbo->valid_domains))
 230                 rep->domain = nvbo->valid_domains;
 231         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 232                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 233         else
 234                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 235         rep->offset = nvbo->bo.offset;
 236         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 237                 vma = nouveau_vma_find(nvbo, vmm);
 238                 if (!vma)
 239                         return -EINVAL;
 240
 241                 rep->offset = vma->addr;
 242         }
 243
 244         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 245         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 246         rep->tile_mode = nvbo->mode;
 247         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 248         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 249                 rep->tile_flags |= nvbo->kind << 8;
 250         else
 251         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 252                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 253         else
 254                 rep->tile_flags |= nvbo->zeta;
 255         return 0;
 256 }
 257
 258 int
 259 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 260                       struct drm_file *file_priv)
 261 {
 262         struct nouveau_cli *cli = nouveau_cli(file_priv);
 263         struct drm_nouveau_gem_new *req = data;
 264         struct nouveau_bo *nvbo = NULL;
 265         int ret = 0;
 266
 267         ret = nouveau_gem_new(cli, req->info.size, req->align,
 268                               req->info.domain, req->info.tile_mode,
 269                               req->info.tile_flags, &nvbo);
 270         if (ret)
 271                 return ret;
 272
 273         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 274                                     &req->info.handle);
 275         if (ret == 0) {
 276                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 277                 if (ret)
 278                         drm_gem_handle_delete(file_priv, req->info.handle);
 279         }
 280
 281         /* drop reference from allocate - handle holds it now */
 282         drm_gem_object_put_unlocked(&nvbo->bo.base);
 283         return ret;
 284 }
 285
 286 static int
 287 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 288                        uint32_t write_domains, uint32_t valid_domains)
 289 {
 290         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 291         struct ttm_buffer_object *bo = &nvbo->bo;
 292         uint32_t domains = valid_domains & nvbo->valid_domains &
 293                 (write_domains ? write_domains : read_domains);
 294         uint32_t pref_flags = 0, valid_flags = 0;
 295
 296         if (!domains)
 297                 return -EINVAL;
 298
 299         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 300                 valid_flags |= TTM_PL_FLAG_VRAM;
 301
 302         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 303                 valid_flags |= TTM_PL_FLAG_TT;
 304
 305         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 306             bo->mem.mem_type == TTM_PL_VRAM)
 307                 pref_flags |= TTM_PL_FLAG_VRAM;
 308
 309         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 310                  bo->mem.mem_type == TTM_PL_TT)
 311                 pref_flags |= TTM_PL_FLAG_TT;
 312
 313         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 314                 pref_flags |= TTM_PL_FLAG_VRAM;
 315
 316         else
 317                 pref_flags |= TTM_PL_FLAG_TT;
 318
 319         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 320
 321         return 0;
 322 }
 323
 324 struct validate_op {
 325         struct list_head list;
 326         struct ww_acquire_ctx ticket;
 327 };
 328
 329 static void
 330 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 331                         struct nouveau_fence *fence,
 332                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 333 {
 334         struct nouveau_bo *nvbo;
 335         struct drm_nouveau_gem_pushbuf_bo *b;
 336
 337         while (!list_empty(&op->list)) {
 338                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 339                 b = &pbbo[nvbo->pbbo_index];
 340
 341                 if (likely(fence)) {
 342                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 343
 344                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 345                                 struct nouveau_vma *vma =
 346                                         (void *)(unsigned long)b->user_priv;
 347                                 nouveau_fence_unref(&vma->fence);
 348                                 dma_fence_get(&fence->base);
 349                                 vma->fence = fence;
 350                         }
 351                 }
 352
 353                 if (unlikely(nvbo->validate_mapped)) {
 354                         ttm_bo_kunmap(&nvbo->kmap);
 355                         nvbo->validate_mapped = false;
 356                 }
 357
 358                 list_del(&nvbo->entry);
 359                 nvbo->reserved_by = NULL;
 360                 ttm_bo_unreserve(&nvbo->bo);
 361                 drm_gem_object_put_unlocked(&nvbo->bo.base);
 362         }
 363 }
 364
 365 static void
 366 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 367               struct nouveau_fence *fence,
 368               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 369 {
 370         validate_fini_no_ticket(op, chan, fence, pbbo);
 371         ww_acquire_fini(&op->ticket);
 372 }
 373
 374 static int
 375 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 376               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 377               int nr_buffers, struct validate_op *op)
 378 {
 379         struct nouveau_cli *cli = nouveau_cli(file_priv);
 380         int trycnt = 0;
 381         int ret = -EINVAL, i;
 382         struct nouveau_bo *res_bo = NULL;
 383         LIST_HEAD(gart_list);
 384         LIST_HEAD(vram_list);
 385         LIST_HEAD(both_list);
 386
 387         ww_acquire_init(&op->ticket, &reservation_ww_class);
 388 retry:
 389         if (++trycnt > 100000) {
 390                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 391                 return -EINVAL;
 392         }
 393
 394         for (i = 0; i < nr_buffers; i++) {
 395                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 396                 struct drm_gem_object *gem;
 397                 struct nouveau_bo *nvbo;
 398
 399                 gem = drm_gem_object_lookup(file_priv, b->handle);
 400                 if (!gem) {
 401                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 402                         ret = -ENOENT;
 403                         break;
 404                 }
 405                 nvbo = nouveau_gem_object(gem);
 406                 if (nvbo == res_bo) {
 407                         res_bo = NULL;
 408                         drm_gem_object_put_unlocked(gem);
 409                         continue;
 410                 }
 411
 412                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 413                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 414                                       "validation list\n", b->handle);
 415                         drm_gem_object_put_unlocked(gem);
 416                         ret = -EINVAL;
 417                         break;
 418                 }
 419
 420                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 421                 if (ret) {
 422                         list_splice_tail_init(&vram_list, &op->list);
 423                         list_splice_tail_init(&gart_list, &op->list);
 424                         list_splice_tail_init(&both_list, &op->list);
 425                         validate_fini_no_ticket(op, chan, NULL, NULL);
 426                         if (unlikely(ret == -EDEADLK)) {
 427                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 428                                                               &op->ticket);
 429                                 if (!ret)
 430                                         res_bo = nvbo;
 431                         }
 432                         if (unlikely(ret)) {
 433                                 if (ret != -ERESTARTSYS)
 434                                         NV_PRINTK(err, cli, "fail reserve\n");
 435                                 break;
 436                         }
 437                 }
 438
 439                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 440                         struct nouveau_vmm *vmm = chan->vmm;
 441                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 442                         if (!vma) {
 443                                 NV_PRINTK(err, cli, "vma not found!\n");
 444                                 ret = -EINVAL;
 445                                 break;
 446                         }
 447
 448                         b->user_priv = (uint64_t)(unsigned long)vma;
 449                 } else {
 450                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 451                 }
 452
 453                 nvbo->reserved_by = file_priv;
 454                 nvbo->pbbo_index = i;
 455                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 456                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 457                         list_add_tail(&nvbo->entry, &both_list);
 458                 else
 459                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 460                         list_add_tail(&nvbo->entry, &vram_list);
 461                 else
 462                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 463                         list_add_tail(&nvbo->entry, &gart_list);
 464                 else {
 465                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 466                                  b->valid_domains);
 467                         list_add_tail(&nvbo->entry, &both_list);
 468                         ret = -EINVAL;
 469                         break;
 470                 }
 471                 if (nvbo == res_bo)
 472                         goto retry;
 473         }
 474
 475         ww_acquire_done(&op->ticket);
 476         list_splice_tail(&vram_list, &op->list);
 477         list_splice_tail(&gart_list, &op->list);
 478         list_splice_tail(&both_list, &op->list);
 479         if (ret)
 480                 validate_fini(op, chan, NULL, NULL);
 481         return ret;
 482
 483 }
 484
 485 static int
 486 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 487               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 488 {
 489         struct nouveau_drm *drm = chan->drm;
 490         struct nouveau_bo *nvbo;
 491         int ret, relocs = 0;
 492
 493         list_for_each_entry(nvbo, list, entry) {
 494                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 495
 496                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 497                                              b->write_domains,
 498                                              b->valid_domains);
 499                 if (unlikely(ret)) {
 500                         NV_PRINTK(err, cli, "fail set_domain\n");
 501                         return ret;
 502                 }
 503
 504                 ret = nouveau_bo_validate(nvbo, true, false);
 505                 if (unlikely(ret)) {
 506                         if (ret != -ERESTARTSYS)
 507                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 508                         return ret;
 509                 }
 510
 511                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 512                 if (unlikely(ret)) {
 513                         if (ret != -ERESTARTSYS)
 514                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 515                         return ret;
 516                 }
 517
 518                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 519                         if (nvbo->bo.offset == b->presumed.offset &&
 520                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 521                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 522                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 523                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 524                                 continue;
 525
 526                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 527                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 528                         else
 529                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 530                         b->presumed.offset = nvbo->bo.offset;
 531                         b->presumed.valid = 0;
 532                         relocs++;
 533                 }
 534         }
 535
 536         return relocs;
 537 }
 538
 539 static int
 540 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 541                              struct drm_file *file_priv,
 542                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 543                              int nr_buffers,
 544                              struct validate_op *op, bool *apply_relocs)
 545 {
 546         struct nouveau_cli *cli = nouveau_cli(file_priv);
 547         int ret;
 548
 549         INIT_LIST_HEAD(&op->list);
 550
 551         if (nr_buffers == 0)
 552                 return 0;
 553
 554         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 555         if (unlikely(ret)) {
 556                 if (ret != -ERESTARTSYS)
 557                         NV_PRINTK(err, cli, "validate_init\n");
 558                 return ret;
 559         }
 560
 561         ret = validate_list(chan, cli, &op->list, pbbo);
 562         if (unlikely(ret < 0)) {
 563                 if (ret != -ERESTARTSYS)
 564                         NV_PRINTK(err, cli, "validating bo list\n");
 565                 validate_fini(op, chan, NULL, NULL);
 566                 return ret;
 567         }
 568         *apply_relocs = ret;
 569         return 0;
 570 }
 571
 572 static inline void
 573 u_free(void *addr)
 574 {
 575         kvfree(addr);
 576 }
 577
 578 static inline void *
 579 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 580 {
 581         void *mem;
 582         void __user *userptr = (void __force __user *)(uintptr_t)user;
 583
 584         size *= nmemb;
 585
 586         mem = kvmalloc(size, GFP_KERNEL);
 587         if (!mem)
 588                 return ERR_PTR(-ENOMEM);
 589
 590         if (copy_from_user(mem, userptr, size)) {
 591                 u_free(mem);
 592                 return ERR_PTR(-EFAULT);
 593         }
 594
 595         return mem;
 596 }
 597
 598 static int
 599 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 600                                 struct drm_nouveau_gem_pushbuf *req,
 601                                 struct drm_nouveau_gem_pushbuf_reloc *reloc,
 602                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 603 {
 604         int ret = 0;
 605         unsigned i;
 606
 607         for (i = 0; i < req->nr_relocs; i++) {
 608                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 609                 struct drm_nouveau_gem_pushbuf_bo *b;
 610                 struct nouveau_bo *nvbo;
 611                 uint32_t data;
 612
 613                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 614                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 615                         ret = -EINVAL;
 616                         break;
 617                 }
 618
 619                 b = &bo[r->bo_index];
 620                 if (b->presumed.valid)
 621                         continue;
 622
 623                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 624                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 625                         ret = -EINVAL;
 626                         break;
 627                 }
 628                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 629
 630                 if (unlikely(r->reloc_bo_offset + 4 >
 631                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 632                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 633                         ret = -EINVAL;
 634                         break;
 635                 }
 636
 637                 if (!nvbo->kmap.virtual) {
 638                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 639                                           &nvbo->kmap);
 640                         if (ret) {
 641                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 642                                 break;
 643                         }
 644                         nvbo->validate_mapped = true;
 645                 }
 646
 647                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 648                         data = b->presumed.offset + r->data;
 649                 else
 650                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 651                         data = (b->presumed.offset + r->data) >> 32;
 652                 else
 653                         data = r->data;
 654
 655                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 656                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 657                                 data |= r->tor;
 658                         else
 659                                 data |= r->vor;
 660                 }
 661
 662                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 663                 if (ret) {
 664                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 665                         break;
 666                 }
 667
 668                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 669         }
 670
 671         u_free(reloc);
 672         return ret;
 673 }
 674
 675 int
 676 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 677                           struct drm_file *file_priv)
 678 {
 679         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 680         struct nouveau_cli *cli = nouveau_cli(file_priv);
 681         struct nouveau_abi16_chan *temp;
 682         struct nouveau_drm *drm = nouveau_drm(dev);
 683         struct drm_nouveau_gem_pushbuf *req = data;
 684         struct drm_nouveau_gem_pushbuf_push *push;
 685         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 686         struct drm_nouveau_gem_pushbuf_bo *bo;
 687         struct nouveau_channel *chan = NULL;
 688         struct validate_op op;
 689         struct nouveau_fence *fence = NULL;
 690         int i, j, ret = 0;
 691         bool do_reloc = false, sync = false;
 692
 693         if (unlikely(!abi16))
 694                 return -ENOMEM;
 695
 696         list_for_each_entry(temp, &abi16->channels, head) {
 697                 if (temp->chan->chid == req->channel) {
 698                         chan = temp->chan;
 699                         break;
 700                 }
 701         }
 702
 703         if (!chan)
 704                 return nouveau_abi16_put(abi16, -ENOENT);
 705         if (unlikely(atomic_read(&chan->killed)))
 706                 return nouveau_abi16_put(abi16, -ENODEV);
 707
 708         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 709
 710         req->vram_available = drm->gem.vram_available;
 711         req->gart_available = drm->gem.gart_available;
 712         if (unlikely(req->nr_push == 0))
 713                 goto out_next;
 714
 715         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 716                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 717                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 718                 return nouveau_abi16_put(abi16, -EINVAL);
 719         }
 720
 721         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 722                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 723                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 724                 return nouveau_abi16_put(abi16, -EINVAL);
 725         }
 726
 727         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 728                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 729                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 730                 return nouveau_abi16_put(abi16, -EINVAL);
 731         }
 732
 733         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 734         if (IS_ERR(push))
 735                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 736
 737         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 738         if (IS_ERR(bo)) {
 739                 u_free(push);
 740                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 741         }
 742
 743         /* Ensure all push buffers are on validate list */
 744         for (i = 0; i < req->nr_push; i++) {
 745                 if (push[i].bo_index >= req->nr_buffers) {
 746                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 747                         ret = -EINVAL;
 748                         goto out_prevalid;
 749                 }
 750         }
 751
 752         /* Validate buffer list */
 753 revalidate:
 754         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 755                                            req->nr_buffers, &op, &do_reloc);
 756         if (ret) {
 757                 if (ret != -ERESTARTSYS)
 758                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 759                 goto out_prevalid;
 760         }
 761
 762         /* Apply any relocations that are required */
 763         if (do_reloc) {
 764                 if (!reloc) {
 765                         validate_fini(&op, chan, NULL, bo);
 766                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 767                         if (IS_ERR(reloc)) {
 768                                 ret = PTR_ERR(reloc);
 769                                 goto out_prevalid;
 770                         }
 771
 772                         goto revalidate;
 773                 }
 774
 775                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 776                 if (ret) {
 777                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 778                         goto out;
 779                 }
 780         }
 781
 782         if (chan->dma.ib_max) {
 783                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 784                 if (ret) {
 785                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 786                         goto out;
 787                 }
 788
 789                 for (i = 0; i < req->nr_push; i++) {
 790                         struct nouveau_vma *vma = (void *)(unsigned long)
 791                                 bo[push[i].bo_index].user_priv;
 792
 793                         nv50_dma_push(chan, vma->addr + push[i].offset,
 794                                       push[i].length);
 795                 }
 796         } else
 797         if (drm->client.device.info.chipset >= 0x25) {
 798                 ret = RING_SPACE(chan, req->nr_push * 2);
 799                 if (ret) {
 800                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 801                         goto out;
 802                 }
 803
 804                 for (i = 0; i < req->nr_push; i++) {
 805                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 806                                 bo[push[i].bo_index].user_priv;
 807
 808                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 809                         OUT_RING(chan, 0);
 810                 }
 811         } else {
 812                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 813                 if (ret) {
 814                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 815                         goto out;
 816                 }
 817
 818                 for (i = 0; i < req->nr_push; i++) {
 819                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 820                                 bo[push[i].bo_index].user_priv;
 821                         uint32_t cmd;
 822
 823                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 824                         cmd |= 0x20000000;
 825                         if (unlikely(cmd != req->suffix0)) {
 826                                 if (!nvbo->kmap.virtual) {
 827                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 828                                                           nvbo->bo.mem.
 829                                                           num_pages,
 830                                                           &nvbo->kmap);
 831                                         if (ret) {
 832                                                 WIND_RING(chan);
 833                                                 goto out;
 834                                         }
 835                                         nvbo->validate_mapped = true;
 836                                 }
 837
 838                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 839                                                 push[i].length - 8) / 4, cmd);
 840                         }
 841
 842                         OUT_RING(chan, 0x20000000 |
 843                                       (nvbo->bo.offset + push[i].offset));
 844                         OUT_RING(chan, 0);
 845                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 846                                 OUT_RING(chan, 0);
 847                 }
 848         }
 849
 850         ret = nouveau_fence_new(chan, false, &fence);
 851         if (ret) {
 852                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 853                 WIND_RING(chan);
 854                 goto out;
 855         }
 856
 857         if (sync) {
 858                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 859                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 860                                 ret = 0;
 861                 }
 862         }
 863
 864 out:
 865         validate_fini(&op, chan, fence, bo);
 866         nouveau_fence_unref(&fence);
 867
 868         if (do_reloc) {
 869                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 870                         u64_to_user_ptr(req->buffers);
 871
 872                 for (i = 0; i < req->nr_buffers; i++) {
 873                         if (bo[i].presumed.valid)
 874                                 continue;
 875
 876                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 877                                          sizeof(bo[i].presumed))) {
 878                                 ret = -EFAULT;
 879                                 break;
 880                         }
 881                 }
 882                 u_free(reloc);
 883         }
 884 out_prevalid:
 885         u_free(bo);
 886         u_free(push);
 887
 888 out_next:
 889         if (chan->dma.ib_max) {
 890                 req->suffix0 = 0x00000000;
 891                 req->suffix1 = 0x00000000;
 892         } else
 893         if (drm->client.device.info.chipset >= 0x25) {
 894                 req->suffix0 = 0x00020000;
 895                 req->suffix1 = 0x00000000;
 896         } else {
 897                 req->suffix0 = 0x20000000 |
 898                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 899                 req->suffix1 = 0x00000000;
 900         }
 901
 902         return nouveau_abi16_put(abi16, ret);
 903 }
 904
 905 int
 906 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 907                            struct drm_file *file_priv)
 908 {
 909         struct drm_nouveau_gem_cpu_prep *req = data;
 910         struct drm_gem_object *gem;
 911         struct nouveau_bo *nvbo;
 912         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 913         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 914         long lret;
 915         int ret;
 916
 917         gem = drm_gem_object_lookup(file_priv, req->handle);
 918         if (!gem)
 919                 return -ENOENT;
 920         nvbo = nouveau_gem_object(gem);
 921
 922         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 923                                                    no_wait ? 0 : 30 * HZ);
 924         if (!lret)
 925                 ret = -EBUSY;
 926         else if (lret > 0)
 927                 ret = 0;
 928         else
 929                 ret = lret;
 930
 931         nouveau_bo_sync_for_cpu(nvbo);
 932         drm_gem_object_put_unlocked(gem);
 933
 934         return ret;
 935 }
 936
 937 int
 938 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 939                            struct drm_file *file_priv)
 940 {
 941         struct drm_nouveau_gem_cpu_fini *req = data;
 942         struct drm_gem_object *gem;
 943         struct nouveau_bo *nvbo;
 944
 945         gem = drm_gem_object_lookup(file_priv, req->handle);
 946         if (!gem)
 947                 return -ENOENT;
 948         nvbo = nouveau_gem_object(gem);
 949
 950         nouveau_bo_sync_for_device(nvbo);
 951         drm_gem_object_put_unlocked(gem);
 952         return 0;
 953 }
 954
 955 int
 956 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 957                        struct drm_file *file_priv)
 958 {
 959         struct drm_nouveau_gem_info *req = data;
 960         struct drm_gem_object *gem;
 961         int ret;
 962
 963         gem = drm_gem_object_lookup(file_priv, req->handle);
 964         if (!gem)
 965                 return -ENOENT;
 966
 967         ret = nouveau_gem_info(file_priv, gem, req);
 968         drm_gem_object_put_unlocked(gem);
 969         return ret;
 970 }
 971