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