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