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