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 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
 173         .free = nouveau_gem_object_del,
 174         .open = nouveau_gem_object_open,
 175         .close = nouveau_gem_object_close,
 176         .pin = nouveau_gem_prime_pin,
 177         .unpin = nouveau_gem_prime_unpin,
 178         .get_sg_table = nouveau_gem_prime_get_sg_table,
 179         .vmap = nouveau_gem_prime_vmap,
 180         .vunmap = nouveau_gem_prime_vunmap,
 181 };
 182
 183 int
 184 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 185                 uint32_t tile_mode, uint32_t tile_flags,
 186                 struct nouveau_bo **pnvbo)
 187 {
 188         struct nouveau_drm *drm = cli->drm;
 189         struct nouveau_bo *nvbo;
 190         int ret;
 191
 192         if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 193                 domain |= NOUVEAU_GEM_DOMAIN_CPU;
 194
 195         nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 196                                 tile_flags);
 197         if (IS_ERR(nvbo))
 198                 return PTR_ERR(nvbo);
 199
 200         nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
 201
 202         /* Initialize the embedded gem-object. We return a single gem-reference
 203          * to the caller, instead of a normal nouveau_bo ttm reference. */
 204         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 205         if (ret) {
 206                 nouveau_bo_ref(NULL, &nvbo);
 207                 return ret;
 208         }
 209
 210         ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
 211         if (ret) {
 212                 nouveau_bo_ref(NULL, &nvbo);
 213                 return ret;
 214         }
 215
 216         /* we restrict allowed domains on nv50+ to only the types
 217          * that were requested at creation time.  not possibly on
 218          * earlier chips without busting the ABI.
 219          */
 220         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 221                               NOUVEAU_GEM_DOMAIN_GART;
 222         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 223                 nvbo->valid_domains &= domain;
 224
 225         *pnvbo = nvbo;
 226         return 0;
 227 }
 228
 229 static int
 230 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 231                  struct drm_nouveau_gem_info *rep)
 232 {
 233         struct nouveau_cli *cli = nouveau_cli(file_priv);
 234         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 235         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 236         struct nouveau_vma *vma;
 237
 238         if (is_power_of_2(nvbo->valid_domains))
 239                 rep->domain = nvbo->valid_domains;
 240         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 241                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 242         else
 243                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 244         rep->offset = nvbo->offset;
 245         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 246                 vma = nouveau_vma_find(nvbo, vmm);
 247                 if (!vma)
 248                         return -EINVAL;
 249
 250                 rep->offset = vma->addr;
 251         }
 252
 253         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 254         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 255         rep->tile_mode = nvbo->mode;
 256         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 257         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 258                 rep->tile_flags |= nvbo->kind << 8;
 259         else
 260         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 261                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 262         else
 263                 rep->tile_flags |= nvbo->zeta;
 264         return 0;
 265 }
 266
 267 int
 268 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 269                       struct drm_file *file_priv)
 270 {
 271         struct nouveau_cli *cli = nouveau_cli(file_priv);
 272         struct drm_nouveau_gem_new *req = data;
 273         struct nouveau_bo *nvbo = NULL;
 274         int ret = 0;
 275
 276         ret = nouveau_gem_new(cli, req->info.size, req->align,
 277                               req->info.domain, req->info.tile_mode,
 278                               req->info.tile_flags, &nvbo);
 279         if (ret)
 280                 return ret;
 281
 282         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 283                                     &req->info.handle);
 284         if (ret == 0) {
 285                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 286                 if (ret)
 287                         drm_gem_handle_delete(file_priv, req->info.handle);
 288         }
 289
 290         /* drop reference from allocate - handle holds it now */
 291         drm_gem_object_put(&nvbo->bo.base);
 292         return ret;
 293 }
 294
 295 static int
 296 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 297                        uint32_t write_domains, uint32_t valid_domains)
 298 {
 299         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 300         struct ttm_buffer_object *bo = &nvbo->bo;
 301         uint32_t domains = valid_domains & nvbo->valid_domains &
 302                 (write_domains ? write_domains : read_domains);
 303         uint32_t pref_domains = 0;;
 304
 305         if (!domains)
 306                 return -EINVAL;
 307
 308         valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 309
 310         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 311             bo->mem.mem_type == TTM_PL_VRAM)
 312                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 313
 314         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 315                  bo->mem.mem_type == TTM_PL_TT)
 316                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 317
 318         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 319                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 320
 321         else
 322                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 323
 324         nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 325
 326         return 0;
 327 }
 328
 329 struct validate_op {
 330         struct list_head list;
 331         struct ww_acquire_ctx ticket;
 332 };
 333
 334 static void
 335 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 336                         struct nouveau_fence *fence,
 337                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 338 {
 339         struct nouveau_bo *nvbo;
 340         struct drm_nouveau_gem_pushbuf_bo *b;
 341
 342         while (!list_empty(&op->list)) {
 343                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 344                 b = &pbbo[nvbo->pbbo_index];
 345
 346                 if (likely(fence)) {
 347                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 348
 349                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 350                                 struct nouveau_vma *vma =
 351                                         (void *)(unsigned long)b->user_priv;
 352                                 nouveau_fence_unref(&vma->fence);
 353                                 dma_fence_get(&fence->base);
 354                                 vma->fence = fence;
 355                         }
 356                 }
 357
 358                 if (unlikely(nvbo->validate_mapped)) {
 359                         ttm_bo_kunmap(&nvbo->kmap);
 360                         nvbo->validate_mapped = false;
 361                 }
 362
 363                 list_del(&nvbo->entry);
 364                 nvbo->reserved_by = NULL;
 365                 ttm_bo_unreserve(&nvbo->bo);
 366                 drm_gem_object_put(&nvbo->bo.base);
 367         }
 368 }
 369
 370 static void
 371 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 372               struct nouveau_fence *fence,
 373               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 374 {
 375         validate_fini_no_ticket(op, chan, fence, pbbo);
 376         ww_acquire_fini(&op->ticket);
 377 }
 378
 379 static int
 380 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 381               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 382               int nr_buffers, struct validate_op *op)
 383 {
 384         struct nouveau_cli *cli = nouveau_cli(file_priv);
 385         int trycnt = 0;
 386         int ret = -EINVAL, i;
 387         struct nouveau_bo *res_bo = NULL;
 388         LIST_HEAD(gart_list);
 389         LIST_HEAD(vram_list);
 390         LIST_HEAD(both_list);
 391
 392         ww_acquire_init(&op->ticket, &reservation_ww_class);
 393 retry:
 394         if (++trycnt > 100000) {
 395                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 396                 return -EINVAL;
 397         }
 398
 399         for (i = 0; i < nr_buffers; i++) {
 400                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 401                 struct drm_gem_object *gem;
 402                 struct nouveau_bo *nvbo;
 403
 404                 gem = drm_gem_object_lookup(file_priv, b->handle);
 405                 if (!gem) {
 406                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 407                         ret = -ENOENT;
 408                         break;
 409                 }
 410                 nvbo = nouveau_gem_object(gem);
 411                 if (nvbo == res_bo) {
 412                         res_bo = NULL;
 413                         drm_gem_object_put(gem);
 414                         continue;
 415                 }
 416
 417                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 418                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 419                                       "validation list\n", b->handle);
 420                         drm_gem_object_put(gem);
 421                         ret = -EINVAL;
 422                         break;
 423                 }
 424
 425                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 426                 if (ret) {
 427                         list_splice_tail_init(&vram_list, &op->list);
 428                         list_splice_tail_init(&gart_list, &op->list);
 429                         list_splice_tail_init(&both_list, &op->list);
 430                         validate_fini_no_ticket(op, chan, NULL, NULL);
 431                         if (unlikely(ret == -EDEADLK)) {
 432                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 433                                                               &op->ticket);
 434                                 if (!ret)
 435                                         res_bo = nvbo;
 436                         }
 437                         if (unlikely(ret)) {
 438                                 if (ret != -ERESTARTSYS)
 439                                         NV_PRINTK(err, cli, "fail reserve\n");
 440                                 break;
 441                         }
 442                 }
 443
 444                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 445                         struct nouveau_vmm *vmm = chan->vmm;
 446                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 447                         if (!vma) {
 448                                 NV_PRINTK(err, cli, "vma not found!\n");
 449                                 ret = -EINVAL;
 450                                 break;
 451                         }
 452
 453                         b->user_priv = (uint64_t)(unsigned long)vma;
 454                 } else {
 455                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 456                 }
 457
 458                 nvbo->reserved_by = file_priv;
 459                 nvbo->pbbo_index = i;
 460                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 461                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 462                         list_add_tail(&nvbo->entry, &both_list);
 463                 else
 464                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 465                         list_add_tail(&nvbo->entry, &vram_list);
 466                 else
 467                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 468                         list_add_tail(&nvbo->entry, &gart_list);
 469                 else {
 470                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 471                                  b->valid_domains);
 472                         list_add_tail(&nvbo->entry, &both_list);
 473                         ret = -EINVAL;
 474                         break;
 475                 }
 476                 if (nvbo == res_bo)
 477                         goto retry;
 478         }
 479
 480         ww_acquire_done(&op->ticket);
 481         list_splice_tail(&vram_list, &op->list);
 482         list_splice_tail(&gart_list, &op->list);
 483         list_splice_tail(&both_list, &op->list);
 484         if (ret)
 485                 validate_fini(op, chan, NULL, NULL);
 486         return ret;
 487
 488 }
 489
 490 static int
 491 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 492               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 493 {
 494         struct nouveau_drm *drm = chan->drm;
 495         struct nouveau_bo *nvbo;
 496         int ret, relocs = 0;
 497
 498         list_for_each_entry(nvbo, list, entry) {
 499                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 500
 501                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 502                                              b->write_domains,
 503                                              b->valid_domains);
 504                 if (unlikely(ret)) {
 505                         NV_PRINTK(err, cli, "fail set_domain\n");
 506                         return ret;
 507                 }
 508
 509                 ret = nouveau_bo_validate(nvbo, true, false);
 510                 if (unlikely(ret)) {
 511                         if (ret != -ERESTARTSYS)
 512                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 513                         return ret;
 514                 }
 515
 516                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 517                 if (unlikely(ret)) {
 518                         if (ret != -ERESTARTSYS)
 519                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 520                         return ret;
 521                 }
 522
 523                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 524                         if (nvbo->offset == b->presumed.offset &&
 525                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 526                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 527                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 528                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 529                                 continue;
 530
 531                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 532                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 533                         else
 534                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 535                         b->presumed.offset = nvbo->offset;
 536                         b->presumed.valid = 0;
 537                         relocs++;
 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                              int nr_buffers,
 549                              struct validate_op *op, bool *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);
 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_reloc *reloc,
 607                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 608 {
 609         int ret = 0;
 610         unsigned i;
 611
 612         for (i = 0; i < req->nr_relocs; i++) {
 613                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 614                 struct drm_nouveau_gem_pushbuf_bo *b;
 615                 struct nouveau_bo *nvbo;
 616                 uint32_t data;
 617
 618                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 619                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 620                         ret = -EINVAL;
 621                         break;
 622                 }
 623
 624                 b = &bo[r->bo_index];
 625                 if (b->presumed.valid)
 626                         continue;
 627
 628                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 629                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 630                         ret = -EINVAL;
 631                         break;
 632                 }
 633                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 634
 635                 if (unlikely(r->reloc_bo_offset + 4 >
 636                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 637                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 638                         ret = -EINVAL;
 639                         break;
 640                 }
 641
 642                 if (!nvbo->kmap.virtual) {
 643                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 644                                           &nvbo->kmap);
 645                         if (ret) {
 646                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 647                                 break;
 648                         }
 649                         nvbo->validate_mapped = true;
 650                 }
 651
 652                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 653                         data = b->presumed.offset + r->data;
 654                 else
 655                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 656                         data = (b->presumed.offset + r->data) >> 32;
 657                 else
 658                         data = r->data;
 659
 660                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 661                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 662                                 data |= r->tor;
 663                         else
 664                                 data |= r->vor;
 665                 }
 666
 667                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 668                 if (ret) {
 669                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 670                         break;
 671                 }
 672
 673                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 674         }
 675
 676         u_free(reloc);
 677         return ret;
 678 }
 679
 680 int
 681 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 682                           struct drm_file *file_priv)
 683 {
 684         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 685         struct nouveau_cli *cli = nouveau_cli(file_priv);
 686         struct nouveau_abi16_chan *temp;
 687         struct nouveau_drm *drm = nouveau_drm(dev);
 688         struct drm_nouveau_gem_pushbuf *req = data;
 689         struct drm_nouveau_gem_pushbuf_push *push;
 690         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 691         struct drm_nouveau_gem_pushbuf_bo *bo;
 692         struct nouveau_channel *chan = NULL;
 693         struct validate_op op;
 694         struct nouveau_fence *fence = NULL;
 695         int i, j, ret = 0;
 696         bool do_reloc = false, sync = false;
 697
 698         if (unlikely(!abi16))
 699                 return -ENOMEM;
 700
 701         list_for_each_entry(temp, &abi16->channels, head) {
 702                 if (temp->chan->chid == req->channel) {
 703                         chan = temp->chan;
 704                         break;
 705                 }
 706         }
 707
 708         if (!chan)
 709                 return nouveau_abi16_put(abi16, -ENOENT);
 710         if (unlikely(atomic_read(&chan->killed)))
 711                 return nouveau_abi16_put(abi16, -ENODEV);
 712
 713         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 714
 715         req->vram_available = drm->gem.vram_available;
 716         req->gart_available = drm->gem.gart_available;
 717         if (unlikely(req->nr_push == 0))
 718                 goto out_next;
 719
 720         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 721                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 722                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 723                 return nouveau_abi16_put(abi16, -EINVAL);
 724         }
 725
 726         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 727                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 728                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 729                 return nouveau_abi16_put(abi16, -EINVAL);
 730         }
 731
 732         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 733                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 734                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 735                 return nouveau_abi16_put(abi16, -EINVAL);
 736         }
 737
 738         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 739         if (IS_ERR(push))
 740                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 741
 742         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 743         if (IS_ERR(bo)) {
 744                 u_free(push);
 745                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 746         }
 747
 748         /* Ensure all push buffers are on validate list */
 749         for (i = 0; i < req->nr_push; i++) {
 750                 if (push[i].bo_index >= req->nr_buffers) {
 751                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 752                         ret = -EINVAL;
 753                         goto out_prevalid;
 754                 }
 755         }
 756
 757         /* Validate buffer list */
 758 revalidate:
 759         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 760                                            req->nr_buffers, &op, &do_reloc);
 761         if (ret) {
 762                 if (ret != -ERESTARTSYS)
 763                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 764                 goto out_prevalid;
 765         }
 766
 767         /* Apply any relocations that are required */
 768         if (do_reloc) {
 769                 if (!reloc) {
 770                         validate_fini(&op, chan, NULL, bo);
 771                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 772                         if (IS_ERR(reloc)) {
 773                                 ret = PTR_ERR(reloc);
 774                                 goto out_prevalid;
 775                         }
 776
 777                         goto revalidate;
 778                 }
 779
 780                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 781                 if (ret) {
 782                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 783                         goto out;
 784                 }
 785         }
 786
 787         if (chan->dma.ib_max) {
 788                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 789                 if (ret) {
 790                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 791                         goto out;
 792                 }
 793
 794                 for (i = 0; i < req->nr_push; i++) {
 795                         struct nouveau_vma *vma = (void *)(unsigned long)
 796                                 bo[push[i].bo_index].user_priv;
 797
 798                         nv50_dma_push(chan, vma->addr + push[i].offset,
 799                                       push[i].length);
 800                 }
 801         } else
 802         if (drm->client.device.info.chipset >= 0x25) {
 803                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
 804                 if (ret) {
 805                         NV_PRINTK(err, cli, "cal_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
 813                         PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
 814                         PUSH_DATA(chan->chan.push, 0);
 815                 }
 816         } else {
 817                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 818                 if (ret) {
 819                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 820                         goto out;
 821                 }
 822
 823                 for (i = 0; i < req->nr_push; i++) {
 824                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 825                                 bo[push[i].bo_index].user_priv;
 826                         uint32_t cmd;
 827
 828                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 829                         cmd |= 0x20000000;
 830                         if (unlikely(cmd != req->suffix0)) {
 831                                 if (!nvbo->kmap.virtual) {
 832                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 833                                                           nvbo->bo.mem.
 834                                                           num_pages,
 835                                                           &nvbo->kmap);
 836                                         if (ret) {
 837                                                 WIND_RING(chan);
 838                                                 goto out;
 839                                         }
 840                                         nvbo->validate_mapped = true;
 841                                 }
 842
 843                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 844                                                 push[i].length - 8) / 4, cmd);
 845                         }
 846
 847                         PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
 848                         PUSH_DATA(chan->chan.push, 0);
 849                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 850                                 PUSH_DATA(chan->chan.push, 0);
 851                 }
 852         }
 853
 854         ret = nouveau_fence_new(chan, false, &fence);
 855         if (ret) {
 856                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 857                 WIND_RING(chan);
 858                 goto out;
 859         }
 860
 861         if (sync) {
 862                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 863                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 864                                 ret = 0;
 865                 }
 866         }
 867
 868 out:
 869         validate_fini(&op, chan, fence, bo);
 870         nouveau_fence_unref(&fence);
 871
 872         if (do_reloc) {
 873                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 874                         u64_to_user_ptr(req->buffers);
 875
 876                 for (i = 0; i < req->nr_buffers; i++) {
 877                         if (bo[i].presumed.valid)
 878                                 continue;
 879
 880                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 881                                          sizeof(bo[i].presumed))) {
 882                                 ret = -EFAULT;
 883                                 break;
 884                         }
 885                 }
 886                 u_free(reloc);
 887         }
 888 out_prevalid:
 889         u_free(bo);
 890         u_free(push);
 891
 892 out_next:
 893         if (chan->dma.ib_max) {
 894                 req->suffix0 = 0x00000000;
 895                 req->suffix1 = 0x00000000;
 896         } else
 897         if (drm->client.device.info.chipset >= 0x25) {
 898                 req->suffix0 = 0x00020000;
 899                 req->suffix1 = 0x00000000;
 900         } else {
 901                 req->suffix0 = 0x20000000 |
 902                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 903                 req->suffix1 = 0x00000000;
 904         }
 905
 906         return nouveau_abi16_put(abi16, ret);
 907 }
 908
 909 int
 910 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 911                            struct drm_file *file_priv)
 912 {
 913         struct drm_nouveau_gem_cpu_prep *req = data;
 914         struct drm_gem_object *gem;
 915         struct nouveau_bo *nvbo;
 916         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 917         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 918         long lret;
 919         int ret;
 920
 921         gem = drm_gem_object_lookup(file_priv, req->handle);
 922         if (!gem)
 923                 return -ENOENT;
 924         nvbo = nouveau_gem_object(gem);
 925
 926         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 927                                                    no_wait ? 0 : 30 * HZ);
 928         if (!lret)
 929                 ret = -EBUSY;
 930         else if (lret > 0)
 931                 ret = 0;
 932         else
 933                 ret = lret;
 934
 935         nouveau_bo_sync_for_cpu(nvbo);
 936         drm_gem_object_put(gem);
 937
 938         return ret;
 939 }
 940
 941 int
 942 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 943                            struct drm_file *file_priv)
 944 {
 945         struct drm_nouveau_gem_cpu_fini *req = data;
 946         struct drm_gem_object *gem;
 947         struct nouveau_bo *nvbo;
 948
 949         gem = drm_gem_object_lookup(file_priv, req->handle);
 950         if (!gem)
 951                 return -ENOENT;
 952         nvbo = nouveau_gem_object(gem);
 953
 954         nouveau_bo_sync_for_device(nvbo);
 955         drm_gem_object_put(gem);
 956         return 0;
 957 }
 958
 959 int
 960 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 961                        struct drm_file *file_priv)
 962 {
 963         struct drm_nouveau_gem_info *req = data;
 964         struct drm_gem_object *gem;
 965         int ret;
 966
 967         gem = drm_gem_object_lookup(file_priv, req->handle);
 968         if (!gem)
 969                 return -ENOENT;
 970
 971         ret = nouveau_gem_info(file_priv, gem, req);
 972         drm_gem_object_put(gem);
 973         return ret;
 974 }
 975