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 <drm/drm_gem_ttm_helper.h>
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_fence.h"
  32 #include "nouveau_abi16.h"
  33
  34 #include "nouveau_ttm.h"
  35 #include "nouveau_gem.h"
  36 #include "nouveau_mem.h"
  37 #include "nouveau_vmm.h"
  38
  39 #include <nvif/class.h>
  40 #include <nvif/push206e.h>
  41
  42 static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf)
  43 {
  44         struct vm_area_struct *vma = vmf->vma;
  45         struct ttm_buffer_object *bo = vma->vm_private_data;
  46         pgprot_t prot;
  47         vm_fault_t ret;
  48
  49         ret = ttm_bo_vm_reserve(bo, vmf);
  50         if (ret)
  51                 return ret;
  52
  53         ret = nouveau_ttm_fault_reserve_notify(bo);
  54         if (ret)
  55                 goto error_unlock;
  56
  57         nouveau_bo_del_io_reserve_lru(bo);
  58         prot = vm_get_page_prot(vma->vm_flags);
  59         ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT);
  60         nouveau_bo_add_io_reserve_lru(bo);
  61         if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
  62                 return ret;
  63
  64 error_unlock:
  65         dma_resv_unlock(bo->base.resv);
  66         return ret;
  67 }
  68
  69 static const struct vm_operations_struct nouveau_ttm_vm_ops = {
  70         .fault = nouveau_ttm_fault,
  71         .open = ttm_bo_vm_open,
  72         .close = ttm_bo_vm_close,
  73         .access = ttm_bo_vm_access
  74 };
  75
  76 void
  77 nouveau_gem_object_del(struct drm_gem_object *gem)
  78 {
  79         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  80         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  81         struct device *dev = drm->dev->dev;
  82         int ret;
  83
  84         ret = pm_runtime_get_sync(dev);
  85         if (WARN_ON(ret < 0 && ret != -EACCES)) {
  86                 pm_runtime_put_autosuspend(dev);
  87                 return;
  88         }
  89
  90         if (gem->import_attach)
  91                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  92
  93         ttm_bo_put(&nvbo->bo);
  94
  95         pm_runtime_mark_last_busy(dev);
  96         pm_runtime_put_autosuspend(dev);
  97 }
  98
  99 int
 100 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
 101 {
 102         struct nouveau_cli *cli = nouveau_cli(file_priv);
 103         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 104         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 105         struct device *dev = drm->dev->dev;
 106         struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
 107         struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 108         struct nouveau_vma *vma;
 109         int ret;
 110
 111         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 112                 return 0;
 113
 114         if (nvbo->no_share && uvmm &&
 115             drm_gpuvm_resv(&uvmm->base) != nvbo->bo.base.resv)
 116                 return -EPERM;
 117
 118         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 119         if (ret)
 120                 return ret;
 121
 122         ret = pm_runtime_get_sync(dev);
 123         if (ret < 0 && ret != -EACCES) {
 124                 pm_runtime_put_autosuspend(dev);
 125                 goto out;
 126         }
 127
 128         /* only create a VMA on binding */
 129         if (!nouveau_cli_uvmm(cli))
 130                 ret = nouveau_vma_new(nvbo, vmm, &vma);
 131         else
 132                 ret = 0;
 133         pm_runtime_mark_last_busy(dev);
 134         pm_runtime_put_autosuspend(dev);
 135 out:
 136         ttm_bo_unreserve(&nvbo->bo);
 137         return ret;
 138 }
 139
 140 struct nouveau_gem_object_unmap {
 141         struct nouveau_cli_work work;
 142         struct nouveau_vma *vma;
 143 };
 144
 145 static void
 146 nouveau_gem_object_delete(struct nouveau_vma *vma)
 147 {
 148         nouveau_fence_unref(&vma->fence);
 149         nouveau_vma_del(&vma);
 150 }
 151
 152 static void
 153 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 154 {
 155         struct nouveau_gem_object_unmap *work =
 156                 container_of(w, typeof(*work), work);
 157         nouveau_gem_object_delete(work->vma);
 158         kfree(work);
 159 }
 160
 161 static void
 162 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 163 {
 164         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 165         struct nouveau_gem_object_unmap *work;
 166
 167         list_del_init(&vma->head);
 168
 169         if (!fence) {
 170                 nouveau_gem_object_delete(vma);
 171                 return;
 172         }
 173
 174         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 175                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 176                 nouveau_gem_object_delete(vma);
 177                 return;
 178         }
 179
 180         work->work.func = nouveau_gem_object_delete_work;
 181         work->vma = vma;
 182         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 183 }
 184
 185 void
 186 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 187 {
 188         struct nouveau_cli *cli = nouveau_cli(file_priv);
 189         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 190         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 191         struct device *dev = drm->dev->dev;
 192         struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 193         struct nouveau_vma *vma;
 194         int ret;
 195
 196         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 197                 return;
 198
 199         if (nouveau_cli_uvmm(cli))
 200                 return;
 201
 202         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 203         if (ret)
 204                 return;
 205
 206         vma = nouveau_vma_find(nvbo, vmm);
 207         if (vma) {
 208                 if (--vma->refs == 0) {
 209                         ret = pm_runtime_get_sync(dev);
 210                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 211                                 nouveau_gem_object_unmap(nvbo, vma);
 212                                 pm_runtime_mark_last_busy(dev);
 213                         }
 214                         pm_runtime_put_autosuspend(dev);
 215                 }
 216         }
 217         ttm_bo_unreserve(&nvbo->bo);
 218 }
 219
 220 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
 221         .free = nouveau_gem_object_del,
 222         .open = nouveau_gem_object_open,
 223         .close = nouveau_gem_object_close,
 224         .export = nouveau_gem_prime_export,
 225         .pin = nouveau_gem_prime_pin,
 226         .unpin = nouveau_gem_prime_unpin,
 227         .get_sg_table = nouveau_gem_prime_get_sg_table,
 228         .vmap = drm_gem_ttm_vmap,
 229         .vunmap = drm_gem_ttm_vunmap,
 230         .mmap = drm_gem_ttm_mmap,
 231         .vm_ops = &nouveau_ttm_vm_ops,
 232 };
 233
 234 int
 235 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 236                 uint32_t tile_mode, uint32_t tile_flags,
 237                 struct nouveau_bo **pnvbo)
 238 {
 239         struct nouveau_drm *drm = cli->drm;
 240         struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
 241         struct dma_resv *resv = NULL;
 242         struct nouveau_bo *nvbo;
 243         int ret;
 244
 245         if (domain & NOUVEAU_GEM_DOMAIN_NO_SHARE) {
 246                 if (unlikely(!uvmm))
 247                         return -EINVAL;
 248
 249                 resv = drm_gpuvm_resv(&uvmm->base);
 250         }
 251
 252         if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 253                 domain |= NOUVEAU_GEM_DOMAIN_CPU;
 254
 255         nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 256                                 tile_flags, false);
 257         if (IS_ERR(nvbo))
 258                 return PTR_ERR(nvbo);
 259
 260         nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
 261         nvbo->no_share = domain & NOUVEAU_GEM_DOMAIN_NO_SHARE;
 262
 263         /* Initialize the embedded gem-object. We return a single gem-reference
 264          * to the caller, instead of a normal nouveau_bo ttm reference. */
 265         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 266         if (ret) {
 267                 drm_gem_object_release(&nvbo->bo.base);
 268                 kfree(nvbo);
 269                 return ret;
 270         }
 271
 272         if (resv)
 273                 dma_resv_lock(resv, NULL);
 274
 275         ret = nouveau_bo_init(nvbo, size, align, domain, NULL, resv);
 276
 277         if (resv)
 278                 dma_resv_unlock(resv);
 279
 280         if (ret)
 281                 return ret;
 282
 283         /* we restrict allowed domains on nv50+ to only the types
 284          * that were requested at creation time.  not possibly on
 285          * earlier chips without busting the ABI.
 286          */
 287         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 288                               NOUVEAU_GEM_DOMAIN_GART;
 289         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 290                 nvbo->valid_domains &= domain;
 291
 292         if (nvbo->no_share) {
 293                 nvbo->r_obj = drm_gpuvm_resv_obj(&uvmm->base);
 294                 drm_gem_object_get(nvbo->r_obj);
 295         }
 296
 297         *pnvbo = nvbo;
 298         return 0;
 299 }
 300
 301 static int
 302 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 303                  struct drm_nouveau_gem_info *rep)
 304 {
 305         struct nouveau_cli *cli = nouveau_cli(file_priv);
 306         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 307         struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 308         struct nouveau_vma *vma;
 309
 310         if (is_power_of_2(nvbo->valid_domains))
 311                 rep->domain = nvbo->valid_domains;
 312         else if (nvbo->bo.resource->mem_type == TTM_PL_TT)
 313                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 314         else
 315                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 316         rep->offset = nvbo->offset;
 317         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50 &&
 318             !nouveau_cli_uvmm(cli)) {
 319                 vma = nouveau_vma_find(nvbo, vmm);
 320                 if (!vma)
 321                         return -EINVAL;
 322
 323                 rep->offset = vma->addr;
 324         } else
 325                 rep->offset = 0;
 326
 327         rep->size = nvbo->bo.base.size;
 328         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 329         rep->tile_mode = nvbo->mode;
 330         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 331         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 332                 rep->tile_flags |= nvbo->kind << 8;
 333         else
 334         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 335                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 336         else
 337                 rep->tile_flags |= nvbo->zeta;
 338         return 0;
 339 }
 340
 341 int
 342 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 343                       struct drm_file *file_priv)
 344 {
 345         struct nouveau_cli *cli = nouveau_cli(file_priv);
 346         struct drm_nouveau_gem_new *req = data;
 347         struct nouveau_bo *nvbo = NULL;
 348         int ret = 0;
 349
 350         /* If uvmm wasn't initialized until now disable it completely to prevent
 351          * userspace from mixing up UAPIs.
 352          */
 353         nouveau_cli_disable_uvmm_noinit(cli);
 354
 355         ret = nouveau_gem_new(cli, req->info.size, req->align,
 356                               req->info.domain, req->info.tile_mode,
 357                               req->info.tile_flags, &nvbo);
 358         if (ret)
 359                 return ret;
 360
 361         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 362                                     &req->info.handle);
 363         if (ret == 0) {
 364                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 365                 if (ret)
 366                         drm_gem_handle_delete(file_priv, req->info.handle);
 367         }
 368
 369         /* drop reference from allocate - handle holds it now */
 370         drm_gem_object_put(&nvbo->bo.base);
 371         return ret;
 372 }
 373
 374 static int
 375 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 376                        uint32_t write_domains, uint32_t valid_domains)
 377 {
 378         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 379         struct ttm_buffer_object *bo = &nvbo->bo;
 380         uint32_t domains = valid_domains & nvbo->valid_domains &
 381                 (write_domains ? write_domains : read_domains);
 382         uint32_t pref_domains = 0;
 383
 384         if (!domains)
 385                 return -EINVAL;
 386
 387         valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 388
 389         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 390             bo->resource->mem_type == TTM_PL_VRAM)
 391                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 392
 393         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 394                  bo->resource->mem_type == TTM_PL_TT)
 395                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 396
 397         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 398                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 399
 400         else
 401                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 402
 403         nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 404
 405         return 0;
 406 }
 407
 408 struct validate_op {
 409         struct list_head list;
 410         struct ww_acquire_ctx ticket;
 411 };
 412
 413 static void
 414 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 415                         struct nouveau_fence *fence,
 416                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 417 {
 418         struct nouveau_bo *nvbo;
 419         struct drm_nouveau_gem_pushbuf_bo *b;
 420
 421         while (!list_empty(&op->list)) {
 422                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 423                 b = &pbbo[nvbo->pbbo_index];
 424
 425                 if (likely(fence)) {
 426                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 427
 428                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 429                                 struct nouveau_vma *vma =
 430                                         (void *)(unsigned long)b->user_priv;
 431                                 nouveau_fence_unref(&vma->fence);
 432                                 dma_fence_get(&fence->base);
 433                                 vma->fence = fence;
 434                         }
 435                 }
 436
 437                 if (unlikely(nvbo->validate_mapped)) {
 438                         ttm_bo_kunmap(&nvbo->kmap);
 439                         nvbo->validate_mapped = false;
 440                 }
 441
 442                 list_del(&nvbo->entry);
 443                 nvbo->reserved_by = NULL;
 444                 ttm_bo_unreserve(&nvbo->bo);
 445                 drm_gem_object_put(&nvbo->bo.base);
 446         }
 447 }
 448
 449 static void
 450 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 451               struct nouveau_fence *fence,
 452               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 453 {
 454         validate_fini_no_ticket(op, chan, fence, pbbo);
 455         ww_acquire_fini(&op->ticket);
 456 }
 457
 458 static int
 459 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 460               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 461               int nr_buffers, struct validate_op *op)
 462 {
 463         struct nouveau_cli *cli = nouveau_cli(file_priv);
 464         int trycnt = 0;
 465         int ret = -EINVAL, i;
 466         struct nouveau_bo *res_bo = NULL;
 467         LIST_HEAD(gart_list);
 468         LIST_HEAD(vram_list);
 469         LIST_HEAD(both_list);
 470
 471         ww_acquire_init(&op->ticket, &reservation_ww_class);
 472 retry:
 473         if (++trycnt > 100000) {
 474                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 475                 return -EINVAL;
 476         }
 477
 478         for (i = 0; i < nr_buffers; i++) {
 479                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 480                 struct drm_gem_object *gem;
 481                 struct nouveau_bo *nvbo;
 482
 483                 gem = drm_gem_object_lookup(file_priv, b->handle);
 484                 if (!gem) {
 485                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 486                         ret = -ENOENT;
 487                         break;
 488                 }
 489                 nvbo = nouveau_gem_object(gem);
 490                 if (nvbo == res_bo) {
 491                         res_bo = NULL;
 492                         drm_gem_object_put(gem);
 493                         continue;
 494                 }
 495
 496                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 497                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 498                                       "validation list\n", b->handle);
 499                         drm_gem_object_put(gem);
 500                         ret = -EINVAL;
 501                         break;
 502                 }
 503
 504                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 505                 if (ret) {
 506                         list_splice_tail_init(&vram_list, &op->list);
 507                         list_splice_tail_init(&gart_list, &op->list);
 508                         list_splice_tail_init(&both_list, &op->list);
 509                         validate_fini_no_ticket(op, chan, NULL, NULL);
 510                         if (unlikely(ret == -EDEADLK)) {
 511                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 512                                                               &op->ticket);
 513                                 if (!ret)
 514                                         res_bo = nvbo;
 515                         }
 516                         if (unlikely(ret)) {
 517                                 if (ret != -ERESTARTSYS)
 518                                         NV_PRINTK(err, cli, "fail reserve\n");
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 524                         struct nouveau_vmm *vmm = chan->vmm;
 525                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 526                         if (!vma) {
 527                                 NV_PRINTK(err, cli, "vma not found!\n");
 528                                 ret = -EINVAL;
 529                                 break;
 530                         }
 531
 532                         b->user_priv = (uint64_t)(unsigned long)vma;
 533                 } else {
 534                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 535                 }
 536
 537                 nvbo->reserved_by = file_priv;
 538                 nvbo->pbbo_index = i;
 539                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 540                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 541                         list_add_tail(&nvbo->entry, &both_list);
 542                 else
 543                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 544                         list_add_tail(&nvbo->entry, &vram_list);
 545                 else
 546                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 547                         list_add_tail(&nvbo->entry, &gart_list);
 548                 else {
 549                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 550                                  b->valid_domains);
 551                         list_add_tail(&nvbo->entry, &both_list);
 552                         ret = -EINVAL;
 553                         break;
 554                 }
 555                 if (nvbo == res_bo)
 556                         goto retry;
 557         }
 558
 559         ww_acquire_done(&op->ticket);
 560         list_splice_tail(&vram_list, &op->list);
 561         list_splice_tail(&gart_list, &op->list);
 562         list_splice_tail(&both_list, &op->list);
 563         if (ret)
 564                 validate_fini(op, chan, NULL, NULL);
 565         return ret;
 566
 567 }
 568
 569 static int
 570 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 571               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 572 {
 573         struct nouveau_drm *drm = chan->drm;
 574         struct nouveau_bo *nvbo;
 575         int ret, relocs = 0;
 576
 577         list_for_each_entry(nvbo, list, entry) {
 578                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 579
 580                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 581                                              b->write_domains,
 582                                              b->valid_domains);
 583                 if (unlikely(ret)) {
 584                         NV_PRINTK(err, cli, "fail set_domain\n");
 585                         return ret;
 586                 }
 587
 588                 ret = nouveau_bo_validate(nvbo, true, false);
 589                 if (unlikely(ret)) {
 590                         if (ret != -ERESTARTSYS)
 591                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 592                         return ret;
 593                 }
 594
 595                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 596                 if (unlikely(ret)) {
 597                         if (ret != -ERESTARTSYS)
 598                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 599                         return ret;
 600                 }
 601
 602                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 603                         if (nvbo->offset == b->presumed.offset &&
 604                             ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
 605                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 606                              (nvbo->bo.resource->mem_type == TTM_PL_TT &&
 607                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 608                                 continue;
 609
 610                         if (nvbo->bo.resource->mem_type == TTM_PL_TT)
 611                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 612                         else
 613                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 614                         b->presumed.offset = nvbo->offset;
 615                         b->presumed.valid = 0;
 616                         relocs++;
 617                 }
 618         }
 619
 620         return relocs;
 621 }
 622
 623 static int
 624 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 625                              struct drm_file *file_priv,
 626                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 627                              int nr_buffers,
 628                              struct validate_op *op, bool *apply_relocs)
 629 {
 630         struct nouveau_cli *cli = nouveau_cli(file_priv);
 631         int ret;
 632
 633         INIT_LIST_HEAD(&op->list);
 634
 635         if (nr_buffers == 0)
 636                 return 0;
 637
 638         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 639         if (unlikely(ret)) {
 640                 if (ret != -ERESTARTSYS)
 641                         NV_PRINTK(err, cli, "validate_init\n");
 642                 return ret;
 643         }
 644
 645         ret = validate_list(chan, cli, &op->list, pbbo);
 646         if (unlikely(ret < 0)) {
 647                 if (ret != -ERESTARTSYS)
 648                         NV_PRINTK(err, cli, "validating bo list\n");
 649                 validate_fini(op, chan, NULL, NULL);
 650                 return ret;
 651         } else if (ret > 0) {
 652                 *apply_relocs = true;
 653         }
 654
 655         return 0;
 656 }
 657
 658 static int
 659 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 660                                 struct drm_nouveau_gem_pushbuf *req,
 661                                 struct drm_nouveau_gem_pushbuf_reloc *reloc,
 662                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 663 {
 664         int ret = 0;
 665         unsigned i;
 666
 667         for (i = 0; i < req->nr_relocs; i++) {
 668                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 669                 struct drm_nouveau_gem_pushbuf_bo *b;
 670                 struct nouveau_bo *nvbo;
 671                 uint32_t data;
 672                 long lret;
 673
 674                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 675                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 676                         ret = -EINVAL;
 677                         break;
 678                 }
 679
 680                 b = &bo[r->bo_index];
 681                 if (b->presumed.valid)
 682                         continue;
 683
 684                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 685                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 686                         ret = -EINVAL;
 687                         break;
 688                 }
 689                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 690
 691                 if (unlikely(r->reloc_bo_offset + 4 >
 692                              nvbo->bo.base.size)) {
 693                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 694                         ret = -EINVAL;
 695                         break;
 696                 }
 697
 698                 if (!nvbo->kmap.virtual) {
 699                         ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size),
 700                                           &nvbo->kmap);
 701                         if (ret) {
 702                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 703                                 break;
 704                         }
 705                         nvbo->validate_mapped = true;
 706                 }
 707
 708                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 709                         data = b->presumed.offset + r->data;
 710                 else
 711                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 712                         data = (b->presumed.offset + r->data) >> 32;
 713                 else
 714                         data = r->data;
 715
 716                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 717                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 718                                 data |= r->tor;
 719                         else
 720                                 data |= r->vor;
 721                 }
 722
 723                 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 724                                              DMA_RESV_USAGE_BOOKKEEP,
 725                                              false, 15 * HZ);
 726                 if (!lret)
 727                         ret = -EBUSY;
 728                 else if (lret > 0)
 729                         ret = 0;
 730                 else
 731                         ret = lret;
 732
 733                 if (ret) {
 734                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
 735                                   ret);
 736                         break;
 737                 }
 738
 739                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 740         }
 741
 742         return ret;
 743 }
 744
 745 int
 746 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 747                           struct drm_file *file_priv)
 748 {
 749         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 750         struct nouveau_cli *cli = nouveau_cli(file_priv);
 751         struct nouveau_abi16_chan *temp;
 752         struct nouveau_drm *drm = nouveau_drm(dev);
 753         struct drm_nouveau_gem_pushbuf *req = data;
 754         struct drm_nouveau_gem_pushbuf_push *push;
 755         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 756         struct drm_nouveau_gem_pushbuf_bo *bo;
 757         struct nouveau_channel *chan = NULL;
 758         struct validate_op op;
 759         struct nouveau_fence *fence = NULL;
 760         int i, j, ret = 0;
 761         bool do_reloc = false, sync = false;
 762
 763         if (unlikely(!abi16))
 764                 return -ENOMEM;
 765
 766         if (unlikely(nouveau_cli_uvmm(cli)))
 767                 return -ENOSYS;
 768
 769         list_for_each_entry(temp, &abi16->channels, head) {
 770                 if (temp->chan->chid == req->channel) {
 771                         chan = temp->chan;
 772                         break;
 773                 }
 774         }
 775
 776         if (!chan)
 777                 return nouveau_abi16_put(abi16, -ENOENT);
 778         if (unlikely(atomic_read(&chan->killed)))
 779                 return nouveau_abi16_put(abi16, -ENODEV);
 780
 781         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 782
 783         req->vram_available = drm->gem.vram_available;
 784         req->gart_available = drm->gem.gart_available;
 785         if (unlikely(req->nr_push == 0))
 786                 goto out_next;
 787
 788         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 789                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 790                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 791                 return nouveau_abi16_put(abi16, -EINVAL);
 792         }
 793
 794         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 795                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 796                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 797                 return nouveau_abi16_put(abi16, -EINVAL);
 798         }
 799
 800         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 801                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 802                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 803                 return nouveau_abi16_put(abi16, -EINVAL);
 804         }
 805
 806         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 807         if (IS_ERR(push))
 808                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 809
 810         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 811         if (IS_ERR(bo)) {
 812                 u_free(push);
 813                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 814         }
 815
 816         /* Ensure all push buffers are on validate list */
 817         for (i = 0; i < req->nr_push; i++) {
 818                 if (push[i].bo_index >= req->nr_buffers) {
 819                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 820                         ret = -EINVAL;
 821                         goto out_prevalid;
 822                 }
 823         }
 824
 825         /* Validate buffer list */
 826 revalidate:
 827         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 828                                            req->nr_buffers, &op, &do_reloc);
 829         if (ret) {
 830                 if (ret != -ERESTARTSYS)
 831                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 832                 goto out_prevalid;
 833         }
 834
 835         /* Apply any relocations that are required */
 836         if (do_reloc) {
 837                 if (!reloc) {
 838                         validate_fini(&op, chan, NULL, bo);
 839                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 840                         if (IS_ERR(reloc)) {
 841                                 ret = PTR_ERR(reloc);
 842                                 goto out_prevalid;
 843                         }
 844
 845                         goto revalidate;
 846                 }
 847
 848                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 849                 if (ret) {
 850                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 851                         goto out;
 852                 }
 853         }
 854
 855         if (chan->dma.ib_max) {
 856                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 857                 if (ret) {
 858                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 859                         goto out;
 860                 }
 861
 862                 for (i = 0; i < req->nr_push; i++) {
 863                         struct nouveau_vma *vma = (void *)(unsigned long)
 864                                 bo[push[i].bo_index].user_priv;
 865                         u64 addr = vma->addr + push[i].offset;
 866                         u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 867                         bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 868
 869                         nv50_dma_push(chan, addr, length, no_prefetch);
 870                 }
 871         } else
 872         if (drm->client.device.info.chipset >= 0x25) {
 873                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
 874                 if (ret) {
 875                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 876                         goto out;
 877                 }
 878
 879                 for (i = 0; i < req->nr_push; i++) {
 880                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 881                                 bo[push[i].bo_index].user_priv;
 882
 883                         PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
 884                         PUSH_DATA(chan->chan.push, 0);
 885                 }
 886         } else {
 887                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 888                 if (ret) {
 889                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 890                         goto out;
 891                 }
 892
 893                 for (i = 0; i < req->nr_push; i++) {
 894                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 895                                 bo[push[i].bo_index].user_priv;
 896                         uint32_t cmd;
 897
 898                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 899                         cmd |= 0x20000000;
 900                         if (unlikely(cmd != req->suffix0)) {
 901                                 if (!nvbo->kmap.virtual) {
 902                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 903                                                           PFN_UP(nvbo->bo.base.size),
 904                                                           &nvbo->kmap);
 905                                         if (ret) {
 906                                                 WIND_RING(chan);
 907                                                 goto out;
 908                                         }
 909                                         nvbo->validate_mapped = true;
 910                                 }
 911
 912                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 913                                                 push[i].length - 8) / 4, cmd);
 914                         }
 915
 916                         PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
 917                         PUSH_DATA(chan->chan.push, 0);
 918                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 919                                 PUSH_DATA(chan->chan.push, 0);
 920                 }
 921         }
 922
 923         ret = nouveau_fence_new(&fence, chan);
 924         if (ret) {
 925                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 926                 WIND_RING(chan);
 927                 goto out;
 928         }
 929
 930         if (sync) {
 931                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 932                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 933                                 ret = 0;
 934                 }
 935         }
 936
 937 out:
 938         validate_fini(&op, chan, fence, bo);
 939         nouveau_fence_unref(&fence);
 940
 941         if (do_reloc) {
 942                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 943                         u64_to_user_ptr(req->buffers);
 944
 945                 for (i = 0; i < req->nr_buffers; i++) {
 946                         if (bo[i].presumed.valid)
 947                                 continue;
 948
 949                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 950                                          sizeof(bo[i].presumed))) {
 951                                 ret = -EFAULT;
 952                                 break;
 953                         }
 954                 }
 955         }
 956 out_prevalid:
 957         if (!IS_ERR(reloc))
 958                 u_free(reloc);
 959         u_free(bo);
 960         u_free(push);
 961
 962 out_next:
 963         if (chan->dma.ib_max) {
 964                 req->suffix0 = 0x00000000;
 965                 req->suffix1 = 0x00000000;
 966         } else
 967         if (drm->client.device.info.chipset >= 0x25) {
 968                 req->suffix0 = 0x00020000;
 969                 req->suffix1 = 0x00000000;
 970         } else {
 971                 req->suffix0 = 0x20000000 |
 972                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 973                 req->suffix1 = 0x00000000;
 974         }
 975
 976         return nouveau_abi16_put(abi16, ret);
 977 }
 978
 979 int
 980 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 981                            struct drm_file *file_priv)
 982 {
 983         struct drm_nouveau_gem_cpu_prep *req = data;
 984         struct drm_gem_object *gem;
 985         struct nouveau_bo *nvbo;
 986         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 987         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 988         long lret;
 989         int ret;
 990
 991         gem = drm_gem_object_lookup(file_priv, req->handle);
 992         if (!gem)
 993                 return -ENOENT;
 994         nvbo = nouveau_gem_object(gem);
 995
 996         lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 997                                      dma_resv_usage_rw(write), true,
 998                                      no_wait ? 0 : 30 * HZ);
 999         if (!lret)
1000                 ret = -EBUSY;
1001         else if (lret > 0)
1002                 ret = 0;
1003         else
1004                 ret = lret;
1005
1006         nouveau_bo_sync_for_cpu(nvbo);
1007         drm_gem_object_put(gem);
1008
1009         return ret;
1010 }
1011
1012 int
1013 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1014                            struct drm_file *file_priv)
1015 {
1016         struct drm_nouveau_gem_cpu_fini *req = data;
1017         struct drm_gem_object *gem;
1018         struct nouveau_bo *nvbo;
1019
1020         gem = drm_gem_object_lookup(file_priv, req->handle);
1021         if (!gem)
1022                 return -ENOENT;
1023         nvbo = nouveau_gem_object(gem);
1024
1025         nouveau_bo_sync_for_device(nvbo);
1026         drm_gem_object_put(gem);
1027         return 0;
1028 }
1029
1030 int
1031 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1032                        struct drm_file *file_priv)
1033 {
1034         struct drm_nouveau_gem_info *req = data;
1035         struct drm_gem_object *gem;
1036         int ret;
1037
1038         gem = drm_gem_object_lookup(file_priv, req->handle);
1039         if (!gem)
1040                 return -ENOENT;
1041
1042         ret = nouveau_gem_info(file_priv, gem, req);
1043         drm_gem_object_put(gem);
1044         return ret;
1045 }
1046