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,
 571               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 572 {
 573         struct nouveau_cli *cli = chan->cli;
 574         struct nouveau_drm *drm = cli->drm;
 575         struct nouveau_bo *nvbo;
 576         int ret, relocs = 0;
 577
 578         list_for_each_entry(nvbo, list, entry) {
 579                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 580
 581                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 582                                              b->write_domains,
 583                                              b->valid_domains);
 584                 if (unlikely(ret)) {
 585                         NV_PRINTK(err, cli, "fail set_domain\n");
 586                         return ret;
 587                 }
 588
 589                 ret = nouveau_bo_validate(nvbo, true, false);
 590                 if (unlikely(ret)) {
 591                         if (ret != -ERESTARTSYS)
 592                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 593                         return ret;
 594                 }
 595
 596                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 597                 if (unlikely(ret)) {
 598                         if (ret != -ERESTARTSYS)
 599                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 600                         return ret;
 601                 }
 602
 603                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 604                         if (nvbo->offset == b->presumed.offset &&
 605                             ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
 606                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 607                              (nvbo->bo.resource->mem_type == TTM_PL_TT &&
 608                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 609                                 continue;
 610
 611                         if (nvbo->bo.resource->mem_type == TTM_PL_TT)
 612                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 613                         else
 614                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 615                         b->presumed.offset = nvbo->offset;
 616                         b->presumed.valid = 0;
 617                         relocs++;
 618                 }
 619         }
 620
 621         return relocs;
 622 }
 623
 624 static int
 625 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 626                              struct drm_file *file_priv,
 627                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 628                              int nr_buffers,
 629                              struct validate_op *op, bool *apply_relocs)
 630 {
 631         struct nouveau_cli *cli = nouveau_cli(file_priv);
 632         int ret;
 633
 634         INIT_LIST_HEAD(&op->list);
 635
 636         if (nr_buffers == 0)
 637                 return 0;
 638
 639         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 640         if (unlikely(ret)) {
 641                 if (ret != -ERESTARTSYS)
 642                         NV_PRINTK(err, cli, "validate_init\n");
 643                 return ret;
 644         }
 645
 646         ret = validate_list(chan, &op->list, pbbo);
 647         if (unlikely(ret < 0)) {
 648                 if (ret != -ERESTARTSYS)
 649                         NV_PRINTK(err, cli, "validating bo list\n");
 650                 validate_fini(op, chan, NULL, NULL);
 651                 return ret;
 652         } else if (ret > 0) {
 653                 *apply_relocs = true;
 654         }
 655
 656         return 0;
 657 }
 658
 659 static int
 660 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 661                                 struct drm_nouveau_gem_pushbuf *req,
 662                                 struct drm_nouveau_gem_pushbuf_reloc *reloc,
 663                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 664 {
 665         int ret = 0;
 666         unsigned i;
 667
 668         for (i = 0; i < req->nr_relocs; i++) {
 669                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 670                 struct drm_nouveau_gem_pushbuf_bo *b;
 671                 struct nouveau_bo *nvbo;
 672                 uint32_t data;
 673                 long lret;
 674
 675                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 676                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 677                         ret = -EINVAL;
 678                         break;
 679                 }
 680
 681                 b = &bo[r->bo_index];
 682                 if (b->presumed.valid)
 683                         continue;
 684
 685                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 686                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 687                         ret = -EINVAL;
 688                         break;
 689                 }
 690                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 691
 692                 if (unlikely(r->reloc_bo_offset + 4 >
 693                              nvbo->bo.base.size)) {
 694                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 695                         ret = -EINVAL;
 696                         break;
 697                 }
 698
 699                 if (!nvbo->kmap.virtual) {
 700                         ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size),
 701                                           &nvbo->kmap);
 702                         if (ret) {
 703                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 704                                 break;
 705                         }
 706                         nvbo->validate_mapped = true;
 707                 }
 708
 709                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 710                         data = b->presumed.offset + r->data;
 711                 else
 712                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 713                         data = (b->presumed.offset + r->data) >> 32;
 714                 else
 715                         data = r->data;
 716
 717                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 718                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 719                                 data |= r->tor;
 720                         else
 721                                 data |= r->vor;
 722                 }
 723
 724                 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 725                                              DMA_RESV_USAGE_BOOKKEEP,
 726                                              false, 15 * HZ);
 727                 if (!lret)
 728                         ret = -EBUSY;
 729                 else if (lret > 0)
 730                         ret = 0;
 731                 else
 732                         ret = lret;
 733
 734                 if (ret) {
 735                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
 736                                   ret);
 737                         break;
 738                 }
 739
 740                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 741         }
 742
 743         return ret;
 744 }
 745
 746 int
 747 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 748                           struct drm_file *file_priv)
 749 {
 750         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 751         struct nouveau_cli *cli = nouveau_cli(file_priv);
 752         struct nouveau_abi16_chan *temp;
 753         struct nouveau_drm *drm = nouveau_drm(dev);
 754         struct drm_nouveau_gem_pushbuf *req = data;
 755         struct drm_nouveau_gem_pushbuf_push *push;
 756         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 757         struct drm_nouveau_gem_pushbuf_bo *bo;
 758         struct nouveau_channel *chan = NULL;
 759         struct validate_op op;
 760         struct nouveau_fence *fence = NULL;
 761         int i, j, ret = 0;
 762         bool do_reloc = false, sync = false;
 763
 764         if (unlikely(!abi16))
 765                 return -ENOMEM;
 766
 767         if (unlikely(nouveau_cli_uvmm(cli)))
 768                 return nouveau_abi16_put(abi16, -ENOSYS);
 769
 770         list_for_each_entry(temp, &abi16->channels, head) {
 771                 if (temp->chan->chid == req->channel) {
 772                         chan = temp->chan;
 773                         break;
 774                 }
 775         }
 776
 777         if (!chan)
 778                 return nouveau_abi16_put(abi16, -ENOENT);
 779         if (unlikely(atomic_read(&chan->killed)))
 780                 return nouveau_abi16_put(abi16, -ENODEV);
 781
 782         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 783
 784         req->vram_available = drm->gem.vram_available;
 785         req->gart_available = drm->gem.gart_available;
 786         if (unlikely(req->nr_push == 0))
 787                 goto out_next;
 788
 789         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 790                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 791                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 792                 return nouveau_abi16_put(abi16, -EINVAL);
 793         }
 794
 795         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 796                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 797                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 798                 return nouveau_abi16_put(abi16, -EINVAL);
 799         }
 800
 801         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 802                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 803                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 804                 return nouveau_abi16_put(abi16, -EINVAL);
 805         }
 806
 807         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 808         if (IS_ERR(push))
 809                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 810
 811         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 812         if (IS_ERR(bo)) {
 813                 u_free(push);
 814                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 815         }
 816
 817         /* Ensure all push buffers are on validate list */
 818         for (i = 0; i < req->nr_push; i++) {
 819                 if (push[i].bo_index >= req->nr_buffers) {
 820                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 821                         ret = -EINVAL;
 822                         goto out_prevalid;
 823                 }
 824         }
 825
 826         /* Validate buffer list */
 827 revalidate:
 828         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 829                                            req->nr_buffers, &op, &do_reloc);
 830         if (ret) {
 831                 if (ret != -ERESTARTSYS)
 832                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 833                 goto out_prevalid;
 834         }
 835
 836         /* Apply any relocations that are required */
 837         if (do_reloc) {
 838                 if (!reloc) {
 839                         validate_fini(&op, chan, NULL, bo);
 840                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 841                         if (IS_ERR(reloc)) {
 842                                 ret = PTR_ERR(reloc);
 843                                 goto out_prevalid;
 844                         }
 845
 846                         goto revalidate;
 847                 }
 848
 849                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 850                 if (ret) {
 851                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 852                         goto out;
 853                 }
 854         }
 855
 856         if (chan->dma.ib_max) {
 857                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 858                 if (ret) {
 859                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 860                         goto out;
 861                 }
 862
 863                 for (i = 0; i < req->nr_push; i++) {
 864                         struct nouveau_vma *vma = (void *)(unsigned long)
 865                                 bo[push[i].bo_index].user_priv;
 866                         u64 addr = vma->addr + push[i].offset;
 867                         u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 868                         bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 869
 870                         nv50_dma_push(chan, addr, length, no_prefetch);
 871                 }
 872         } else
 873         if (drm->client.device.info.chipset >= 0x25) {
 874                 ret = PUSH_WAIT(&chan->chan.push, req->nr_push * 2);
 875                 if (ret) {
 876                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 877                         goto out;
 878                 }
 879
 880                 for (i = 0; i < req->nr_push; i++) {
 881                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 882                                 bo[push[i].bo_index].user_priv;
 883
 884                         PUSH_CALL(&chan->chan.push, nvbo->offset + push[i].offset);
 885                         PUSH_DATA(&chan->chan.push, 0);
 886                 }
 887         } else {
 888                 ret = PUSH_WAIT(&chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 889                 if (ret) {
 890                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 891                         goto out;
 892                 }
 893
 894                 for (i = 0; i < req->nr_push; i++) {
 895                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 896                                 bo[push[i].bo_index].user_priv;
 897                         uint32_t cmd;
 898
 899                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 900                         cmd |= 0x20000000;
 901                         if (unlikely(cmd != req->suffix0)) {
 902                                 if (!nvbo->kmap.virtual) {
 903                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 904                                                           PFN_UP(nvbo->bo.base.size),
 905                                                           &nvbo->kmap);
 906                                         if (ret) {
 907                                                 WIND_RING(chan);
 908                                                 goto out;
 909                                         }
 910                                         nvbo->validate_mapped = true;
 911                                 }
 912
 913                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 914                                                 push[i].length - 8) / 4, cmd);
 915                         }
 916
 917                         PUSH_JUMP(&chan->chan.push, nvbo->offset + push[i].offset);
 918                         PUSH_DATA(&chan->chan.push, 0);
 919                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 920                                 PUSH_DATA(&chan->chan.push, 0);
 921                 }
 922         }
 923
 924         ret = nouveau_fence_new(&fence, chan);
 925         if (ret) {
 926                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 927                 WIND_RING(chan);
 928                 goto out;
 929         }
 930
 931         if (sync) {
 932                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 933                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 934                                 ret = 0;
 935                 }
 936         }
 937
 938 out:
 939         validate_fini(&op, chan, fence, bo);
 940         nouveau_fence_unref(&fence);
 941
 942         if (do_reloc) {
 943                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 944                         u64_to_user_ptr(req->buffers);
 945
 946                 for (i = 0; i < req->nr_buffers; i++) {
 947                         if (bo[i].presumed.valid)
 948                                 continue;
 949
 950                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 951                                          sizeof(bo[i].presumed))) {
 952                                 ret = -EFAULT;
 953                                 break;
 954                         }
 955                 }
 956         }
 957 out_prevalid:
 958         if (!IS_ERR(reloc))
 959                 u_free(reloc);
 960         u_free(bo);
 961         u_free(push);
 962
 963 out_next:
 964         if (chan->dma.ib_max) {
 965                 req->suffix0 = 0x00000000;
 966                 req->suffix1 = 0x00000000;
 967         } else
 968         if (drm->client.device.info.chipset >= 0x25) {
 969                 req->suffix0 = 0x00020000;
 970                 req->suffix1 = 0x00000000;
 971         } else {
 972                 req->suffix0 = 0x20000000 |
 973                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 974                 req->suffix1 = 0x00000000;
 975         }
 976
 977         return nouveau_abi16_put(abi16, ret);
 978 }
 979
 980 int
 981 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 982                            struct drm_file *file_priv)
 983 {
 984         struct drm_nouveau_gem_cpu_prep *req = data;
 985         struct drm_gem_object *gem;
 986         struct nouveau_bo *nvbo;
 987         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 988         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 989         long lret;
 990         int ret;
 991
 992         gem = drm_gem_object_lookup(file_priv, req->handle);
 993         if (!gem)
 994                 return -ENOENT;
 995         nvbo = nouveau_gem_object(gem);
 996
 997         lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 998                                      dma_resv_usage_rw(write), true,
 999                                      no_wait ? 0 : 30 * HZ);
1000         if (!lret)
1001                 ret = -EBUSY;
1002         else if (lret > 0)
1003                 ret = 0;
1004         else
1005                 ret = lret;
1006
1007         nouveau_bo_sync_for_cpu(nvbo);
1008         drm_gem_object_put(gem);
1009
1010         return ret;
1011 }
1012
1013 int
1014 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1015                            struct drm_file *file_priv)
1016 {
1017         struct drm_nouveau_gem_cpu_fini *req = data;
1018         struct drm_gem_object *gem;
1019         struct nouveau_bo *nvbo;
1020
1021         gem = drm_gem_object_lookup(file_priv, req->handle);
1022         if (!gem)
1023                 return -ENOENT;
1024         nvbo = nouveau_gem_object(gem);
1025
1026         nouveau_bo_sync_for_device(nvbo);
1027         drm_gem_object_put(gem);
1028         return 0;
1029 }
1030
1031 int
1032 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1033                        struct drm_file *file_priv)
1034 {
1035         struct drm_nouveau_gem_info *req = data;
1036         struct drm_gem_object *gem;
1037         int ret;
1038
1039         gem = drm_gem_object_lookup(file_priv, req->handle);
1040         if (!gem)
1041                 return -ENOENT;
1042
1043         ret = nouveau_gem_info(file_priv, gem, req);
1044         drm_gem_object_put(gem);
1045         return ret;
1046 }
1047