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