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 #include <nvif/push206e.h>
  39
  40 void
  41 nouveau_gem_object_del(struct drm_gem_object *gem)
  42 {
  43         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  44         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  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                 pm_runtime_put_autosuspend(dev);
  51                 return;
  52         }
  53
  54         if (gem->import_attach)
  55                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  56
  57         ttm_bo_put(&nvbo->bo);
  58
  59         pm_runtime_mark_last_busy(dev);
  60         pm_runtime_put_autosuspend(dev);
  61 }
  62
  63 int
  64 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  65 {
  66         struct nouveau_cli *cli = nouveau_cli(file_priv);
  67         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  68         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  69         struct device *dev = drm->dev->dev;
  70         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  71         struct nouveau_vma *vma;
  72         int ret;
  73
  74         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
  75                 return 0;
  76
  77         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  78         if (ret)
  79                 return ret;
  80
  81         ret = pm_runtime_get_sync(dev);
  82         if (ret < 0 && ret != -EACCES) {
  83                 pm_runtime_put_autosuspend(dev);
  84                 goto out;
  85         }
  86
  87         ret = nouveau_vma_new(nvbo, vmm, &vma);
  88         pm_runtime_mark_last_busy(dev);
  89         pm_runtime_put_autosuspend(dev);
  90 out:
  91         ttm_bo_unreserve(&nvbo->bo);
  92         return ret;
  93 }
  94
  95 struct nouveau_gem_object_unmap {
  96         struct nouveau_cli_work work;
  97         struct nouveau_vma *vma;
  98 };
  99
 100 static void
 101 nouveau_gem_object_delete(struct nouveau_vma *vma)
 102 {
 103         nouveau_fence_unref(&vma->fence);
 104         nouveau_vma_del(&vma);
 105 }
 106
 107 static void
 108 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 109 {
 110         struct nouveau_gem_object_unmap *work =
 111                 container_of(w, typeof(*work), work);
 112         nouveau_gem_object_delete(work->vma);
 113         kfree(work);
 114 }
 115
 116 static void
 117 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 118 {
 119         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 120         struct nouveau_gem_object_unmap *work;
 121
 122         list_del_init(&vma->head);
 123
 124         if (!fence) {
 125                 nouveau_gem_object_delete(vma);
 126                 return;
 127         }
 128
 129         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 130                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 131                 nouveau_gem_object_delete(vma);
 132                 return;
 133         }
 134
 135         work->work.func = nouveau_gem_object_delete_work;
 136         work->vma = vma;
 137         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 138 }
 139
 140 void
 141 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 142 {
 143         struct nouveau_cli *cli = nouveau_cli(file_priv);
 144         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 145         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 146         struct device *dev = drm->dev->dev;
 147         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 148         struct nouveau_vma *vma;
 149         int ret;
 150
 151         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 152                 return;
 153
 154         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 155         if (ret)
 156                 return;
 157
 158         vma = nouveau_vma_find(nvbo, vmm);
 159         if (vma) {
 160                 if (--vma->refs == 0) {
 161                         ret = pm_runtime_get_sync(dev);
 162                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 163                                 nouveau_gem_object_unmap(nvbo, vma);
 164                                 pm_runtime_mark_last_busy(dev);
 165                         }
 166                         pm_runtime_put_autosuspend(dev);
 167                 }
 168         }
 169         ttm_bo_unreserve(&nvbo->bo);
 170 }
 171
 172 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
 173         .free = nouveau_gem_object_del,
 174         .open = nouveau_gem_object_open,
 175         .close = nouveau_gem_object_close,
 176         .pin = nouveau_gem_prime_pin,
 177         .unpin = nouveau_gem_prime_unpin,
 178         .get_sg_table = nouveau_gem_prime_get_sg_table,
 179         .vmap = nouveau_gem_prime_vmap,
 180         .vunmap = nouveau_gem_prime_vunmap,
 181 };
 182
 183 int
 184 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 185                 uint32_t tile_mode, uint32_t tile_flags,
 186                 struct nouveau_bo **pnvbo)
 187 {
 188         struct nouveau_drm *drm = cli->drm;
 189         struct nouveau_bo *nvbo;
 190         int ret;
 191
 192         if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 193                 domain |= NOUVEAU_GEM_DOMAIN_CPU;
 194
 195         nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 196                                 tile_flags);
 197         if (IS_ERR(nvbo))
 198                 return PTR_ERR(nvbo);
 199
 200         nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
 201
 202         /* Initialize the embedded gem-object. We return a single gem-reference
 203          * to the caller, instead of a normal nouveau_bo ttm reference. */
 204         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 205         if (ret) {
 206                 drm_gem_object_release(&nvbo->bo.base);
 207                 kfree(nvbo);
 208                 return ret;
 209         }
 210
 211         ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
 212         if (ret) {
 213                 nouveau_bo_ref(NULL, &nvbo);
 214                 return ret;
 215         }
 216
 217         /* we restrict allowed domains on nv50+ to only the types
 218          * that were requested at creation time.  not possibly on
 219          * earlier chips without busting the ABI.
 220          */
 221         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 222                               NOUVEAU_GEM_DOMAIN_GART;
 223         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 224                 nvbo->valid_domains &= domain;
 225
 226         *pnvbo = nvbo;
 227         return 0;
 228 }
 229
 230 static int
 231 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 232                  struct drm_nouveau_gem_info *rep)
 233 {
 234         struct nouveau_cli *cli = nouveau_cli(file_priv);
 235         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 236         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 237         struct nouveau_vma *vma;
 238
 239         if (is_power_of_2(nvbo->valid_domains))
 240                 rep->domain = nvbo->valid_domains;
 241         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 242                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 243         else
 244                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 245         rep->offset = nvbo->offset;
 246         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 247                 vma = nouveau_vma_find(nvbo, vmm);
 248                 if (!vma)
 249                         return -EINVAL;
 250
 251                 rep->offset = vma->addr;
 252         }
 253
 254         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 255         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 256         rep->tile_mode = nvbo->mode;
 257         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 258         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 259                 rep->tile_flags |= nvbo->kind << 8;
 260         else
 261         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 262                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 263         else
 264                 rep->tile_flags |= nvbo->zeta;
 265         return 0;
 266 }
 267
 268 int
 269 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 270                       struct drm_file *file_priv)
 271 {
 272         struct nouveau_cli *cli = nouveau_cli(file_priv);
 273         struct drm_nouveau_gem_new *req = data;
 274         struct nouveau_bo *nvbo = NULL;
 275         int ret = 0;
 276
 277         ret = nouveau_gem_new(cli, req->info.size, req->align,
 278                               req->info.domain, req->info.tile_mode,
 279                               req->info.tile_flags, &nvbo);
 280         if (ret)
 281                 return ret;
 282
 283         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 284                                     &req->info.handle);
 285         if (ret == 0) {
 286                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 287                 if (ret)
 288                         drm_gem_handle_delete(file_priv, req->info.handle);
 289         }
 290
 291         /* drop reference from allocate - handle holds it now */
 292         drm_gem_object_put(&nvbo->bo.base);
 293         return ret;
 294 }
 295
 296 static int
 297 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 298                        uint32_t write_domains, uint32_t valid_domains)
 299 {
 300         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 301         struct ttm_buffer_object *bo = &nvbo->bo;
 302         uint32_t domains = valid_domains & nvbo->valid_domains &
 303                 (write_domains ? write_domains : read_domains);
 304         uint32_t pref_domains = 0;;
 305
 306         if (!domains)
 307                 return -EINVAL;
 308
 309         valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 310
 311         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 312             bo->mem.mem_type == TTM_PL_VRAM)
 313                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 314
 315         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 316                  bo->mem.mem_type == TTM_PL_TT)
 317                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 318
 319         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 320                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 321
 322         else
 323                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 324
 325         nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 326
 327         return 0;
 328 }
 329
 330 struct validate_op {
 331         struct list_head list;
 332         struct ww_acquire_ctx ticket;
 333 };
 334
 335 static void
 336 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 337                         struct nouveau_fence *fence,
 338                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 339 {
 340         struct nouveau_bo *nvbo;
 341         struct drm_nouveau_gem_pushbuf_bo *b;
 342
 343         while (!list_empty(&op->list)) {
 344                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 345                 b = &pbbo[nvbo->pbbo_index];
 346
 347                 if (likely(fence)) {
 348                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 349
 350                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 351                                 struct nouveau_vma *vma =
 352                                         (void *)(unsigned long)b->user_priv;
 353                                 nouveau_fence_unref(&vma->fence);
 354                                 dma_fence_get(&fence->base);
 355                                 vma->fence = fence;
 356                         }
 357                 }
 358
 359                 if (unlikely(nvbo->validate_mapped)) {
 360                         ttm_bo_kunmap(&nvbo->kmap);
 361                         nvbo->validate_mapped = false;
 362                 }
 363
 364                 list_del(&nvbo->entry);
 365                 nvbo->reserved_by = NULL;
 366                 ttm_bo_unreserve(&nvbo->bo);
 367                 drm_gem_object_put(&nvbo->bo.base);
 368         }
 369 }
 370
 371 static void
 372 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 373               struct nouveau_fence *fence,
 374               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 375 {
 376         validate_fini_no_ticket(op, chan, fence, pbbo);
 377         ww_acquire_fini(&op->ticket);
 378 }
 379
 380 static int
 381 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 382               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 383               int nr_buffers, struct validate_op *op)
 384 {
 385         struct nouveau_cli *cli = nouveau_cli(file_priv);
 386         int trycnt = 0;
 387         int ret = -EINVAL, i;
 388         struct nouveau_bo *res_bo = NULL;
 389         LIST_HEAD(gart_list);
 390         LIST_HEAD(vram_list);
 391         LIST_HEAD(both_list);
 392
 393         ww_acquire_init(&op->ticket, &reservation_ww_class);
 394 retry:
 395         if (++trycnt > 100000) {
 396                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 397                 return -EINVAL;
 398         }
 399
 400         for (i = 0; i < nr_buffers; i++) {
 401                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 402                 struct drm_gem_object *gem;
 403                 struct nouveau_bo *nvbo;
 404
 405                 gem = drm_gem_object_lookup(file_priv, b->handle);
 406                 if (!gem) {
 407                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 408                         ret = -ENOENT;
 409                         break;
 410                 }
 411                 nvbo = nouveau_gem_object(gem);
 412                 if (nvbo == res_bo) {
 413                         res_bo = NULL;
 414                         drm_gem_object_put(gem);
 415                         continue;
 416                 }
 417
 418                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 419                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 420                                       "validation list\n", b->handle);
 421                         drm_gem_object_put(gem);
 422                         ret = -EINVAL;
 423                         break;
 424                 }
 425
 426                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 427                 if (ret) {
 428                         list_splice_tail_init(&vram_list, &op->list);
 429                         list_splice_tail_init(&gart_list, &op->list);
 430                         list_splice_tail_init(&both_list, &op->list);
 431                         validate_fini_no_ticket(op, chan, NULL, NULL);
 432                         if (unlikely(ret == -EDEADLK)) {
 433                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 434                                                               &op->ticket);
 435                                 if (!ret)
 436                                         res_bo = nvbo;
 437                         }
 438                         if (unlikely(ret)) {
 439                                 if (ret != -ERESTARTSYS)
 440                                         NV_PRINTK(err, cli, "fail reserve\n");
 441                                 break;
 442                         }
 443                 }
 444
 445                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 446                         struct nouveau_vmm *vmm = chan->vmm;
 447                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 448                         if (!vma) {
 449                                 NV_PRINTK(err, cli, "vma not found!\n");
 450                                 ret = -EINVAL;
 451                                 break;
 452                         }
 453
 454                         b->user_priv = (uint64_t)(unsigned long)vma;
 455                 } else {
 456                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 457                 }
 458
 459                 nvbo->reserved_by = file_priv;
 460                 nvbo->pbbo_index = i;
 461                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 462                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 463                         list_add_tail(&nvbo->entry, &both_list);
 464                 else
 465                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 466                         list_add_tail(&nvbo->entry, &vram_list);
 467                 else
 468                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 469                         list_add_tail(&nvbo->entry, &gart_list);
 470                 else {
 471                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 472                                  b->valid_domains);
 473                         list_add_tail(&nvbo->entry, &both_list);
 474                         ret = -EINVAL;
 475                         break;
 476                 }
 477                 if (nvbo == res_bo)
 478                         goto retry;
 479         }
 480
 481         ww_acquire_done(&op->ticket);
 482         list_splice_tail(&vram_list, &op->list);
 483         list_splice_tail(&gart_list, &op->list);
 484         list_splice_tail(&both_list, &op->list);
 485         if (ret)
 486                 validate_fini(op, chan, NULL, NULL);
 487         return ret;
 488
 489 }
 490
 491 static int
 492 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 493               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 494 {
 495         struct nouveau_drm *drm = chan->drm;
 496         struct nouveau_bo *nvbo;
 497         int ret, relocs = 0;
 498
 499         list_for_each_entry(nvbo, list, entry) {
 500                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 501
 502                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 503                                              b->write_domains,
 504                                              b->valid_domains);
 505                 if (unlikely(ret)) {
 506                         NV_PRINTK(err, cli, "fail set_domain\n");
 507                         return ret;
 508                 }
 509
 510                 ret = nouveau_bo_validate(nvbo, true, false);
 511                 if (unlikely(ret)) {
 512                         if (ret != -ERESTARTSYS)
 513                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 514                         return ret;
 515                 }
 516
 517                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 518                 if (unlikely(ret)) {
 519                         if (ret != -ERESTARTSYS)
 520                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 521                         return ret;
 522                 }
 523
 524                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 525                         if (nvbo->offset == b->presumed.offset &&
 526                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 527                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 528                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 529                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 530                                 continue;
 531
 532                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 533                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 534                         else
 535                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 536                         b->presumed.offset = nvbo->offset;
 537                         b->presumed.valid = 0;
 538                         relocs++;
 539                 }
 540         }
 541
 542         return relocs;
 543 }
 544
 545 static int
 546 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 547                              struct drm_file *file_priv,
 548                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 549                              int nr_buffers,
 550                              struct validate_op *op, bool *apply_relocs)
 551 {
 552         struct nouveau_cli *cli = nouveau_cli(file_priv);
 553         int ret;
 554
 555         INIT_LIST_HEAD(&op->list);
 556
 557         if (nr_buffers == 0)
 558                 return 0;
 559
 560         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 561         if (unlikely(ret)) {
 562                 if (ret != -ERESTARTSYS)
 563                         NV_PRINTK(err, cli, "validate_init\n");
 564                 return ret;
 565         }
 566
 567         ret = validate_list(chan, cli, &op->list, pbbo);
 568         if (unlikely(ret < 0)) {
 569                 if (ret != -ERESTARTSYS)
 570                         NV_PRINTK(err, cli, "validating bo list\n");
 571                 validate_fini(op, chan, NULL, NULL);
 572                 return ret;
 573         }
 574         *apply_relocs = ret;
 575         return 0;
 576 }
 577
 578 static inline void
 579 u_free(void *addr)
 580 {
 581         kvfree(addr);
 582 }
 583
 584 static inline void *
 585 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 586 {
 587         void *mem;
 588         void __user *userptr = (void __force __user *)(uintptr_t)user;
 589
 590         size *= nmemb;
 591
 592         mem = kvmalloc(size, GFP_KERNEL);
 593         if (!mem)
 594                 return ERR_PTR(-ENOMEM);
 595
 596         if (copy_from_user(mem, userptr, size)) {
 597                 u_free(mem);
 598                 return ERR_PTR(-EFAULT);
 599         }
 600
 601         return mem;
 602 }
 603
 604 static int
 605 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 606                                 struct drm_nouveau_gem_pushbuf *req,
 607                                 struct drm_nouveau_gem_pushbuf_reloc *reloc,
 608                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 609 {
 610         int ret = 0;
 611         unsigned i;
 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_reloc *reloc = NULL;
 692         struct drm_nouveau_gem_pushbuf_bo *bo;
 693         struct nouveau_channel *chan = NULL;
 694         struct validate_op op;
 695         struct nouveau_fence *fence = NULL;
 696         int i, j, ret = 0;
 697         bool do_reloc = false, sync = false;
 698
 699         if (unlikely(!abi16))
 700                 return -ENOMEM;
 701
 702         list_for_each_entry(temp, &abi16->channels, head) {
 703                 if (temp->chan->chid == req->channel) {
 704                         chan = temp->chan;
 705                         break;
 706                 }
 707         }
 708
 709         if (!chan)
 710                 return nouveau_abi16_put(abi16, -ENOENT);
 711         if (unlikely(atomic_read(&chan->killed)))
 712                 return nouveau_abi16_put(abi16, -ENODEV);
 713
 714         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 715
 716         req->vram_available = drm->gem.vram_available;
 717         req->gart_available = drm->gem.gart_available;
 718         if (unlikely(req->nr_push == 0))
 719                 goto out_next;
 720
 721         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 722                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 723                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 724                 return nouveau_abi16_put(abi16, -EINVAL);
 725         }
 726
 727         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 728                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 729                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 730                 return nouveau_abi16_put(abi16, -EINVAL);
 731         }
 732
 733         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 734                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 735                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 736                 return nouveau_abi16_put(abi16, -EINVAL);
 737         }
 738
 739         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 740         if (IS_ERR(push))
 741                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 742
 743         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 744         if (IS_ERR(bo)) {
 745                 u_free(push);
 746                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 747         }
 748
 749         /* Ensure all push buffers are on validate list */
 750         for (i = 0; i < req->nr_push; i++) {
 751                 if (push[i].bo_index >= req->nr_buffers) {
 752                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 753                         ret = -EINVAL;
 754                         goto out_prevalid;
 755                 }
 756         }
 757
 758         /* Validate buffer list */
 759 revalidate:
 760         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 761                                            req->nr_buffers, &op, &do_reloc);
 762         if (ret) {
 763                 if (ret != -ERESTARTSYS)
 764                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 765                 goto out_prevalid;
 766         }
 767
 768         /* Apply any relocations that are required */
 769         if (do_reloc) {
 770                 if (!reloc) {
 771                         validate_fini(&op, chan, NULL, bo);
 772                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 773                         if (IS_ERR(reloc)) {
 774                                 ret = PTR_ERR(reloc);
 775                                 goto out_prevalid;
 776                         }
 777
 778                         goto revalidate;
 779                 }
 780
 781                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 782                 if (ret) {
 783                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 784                         goto out;
 785                 }
 786         }
 787
 788         if (chan->dma.ib_max) {
 789                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 790                 if (ret) {
 791                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 792                         goto out;
 793                 }
 794
 795                 for (i = 0; i < req->nr_push; i++) {
 796                         struct nouveau_vma *vma = (void *)(unsigned long)
 797                                 bo[push[i].bo_index].user_priv;
 798
 799                         nv50_dma_push(chan, vma->addr + push[i].offset,
 800                                       push[i].length);
 801                 }
 802         } else
 803         if (drm->client.device.info.chipset >= 0x25) {
 804                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
 805                 if (ret) {
 806                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 807                         goto out;
 808                 }
 809
 810                 for (i = 0; i < req->nr_push; i++) {
 811                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 812                                 bo[push[i].bo_index].user_priv;
 813
 814                         PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
 815                         PUSH_DATA(chan->chan.push, 0);
 816                 }
 817         } else {
 818                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 819                 if (ret) {
 820                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 821                         goto out;
 822                 }
 823
 824                 for (i = 0; i < req->nr_push; i++) {
 825                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 826                                 bo[push[i].bo_index].user_priv;
 827                         uint32_t cmd;
 828
 829                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 830                         cmd |= 0x20000000;
 831                         if (unlikely(cmd != req->suffix0)) {
 832                                 if (!nvbo->kmap.virtual) {
 833                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 834                                                           nvbo->bo.mem.
 835                                                           num_pages,
 836                                                           &nvbo->kmap);
 837                                         if (ret) {
 838                                                 WIND_RING(chan);
 839                                                 goto out;
 840                                         }
 841                                         nvbo->validate_mapped = true;
 842                                 }
 843
 844                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 845                                                 push[i].length - 8) / 4, cmd);
 846                         }
 847
 848                         PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
 849                         PUSH_DATA(chan->chan.push, 0);
 850                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 851                                 PUSH_DATA(chan->chan.push, 0);
 852                 }
 853         }
 854
 855         ret = nouveau_fence_new(chan, false, &fence);
 856         if (ret) {
 857                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 858                 WIND_RING(chan);
 859                 goto out;
 860         }
 861
 862         if (sync) {
 863                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 864                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 865                                 ret = 0;
 866                 }
 867         }
 868
 869 out:
 870         validate_fini(&op, chan, fence, bo);
 871         nouveau_fence_unref(&fence);
 872
 873         if (do_reloc) {
 874                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 875                         u64_to_user_ptr(req->buffers);
 876
 877                 for (i = 0; i < req->nr_buffers; i++) {
 878                         if (bo[i].presumed.valid)
 879                                 continue;
 880
 881                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 882                                          sizeof(bo[i].presumed))) {
 883                                 ret = -EFAULT;
 884                                 break;
 885                         }
 886                 }
 887                 u_free(reloc);
 888         }
 889 out_prevalid:
 890         u_free(bo);
 891         u_free(push);
 892
 893 out_next:
 894         if (chan->dma.ib_max) {
 895                 req->suffix0 = 0x00000000;
 896                 req->suffix1 = 0x00000000;
 897         } else
 898         if (drm->client.device.info.chipset >= 0x25) {
 899                 req->suffix0 = 0x00020000;
 900                 req->suffix1 = 0x00000000;
 901         } else {
 902                 req->suffix0 = 0x20000000 |
 903                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 904                 req->suffix1 = 0x00000000;
 905         }
 906
 907         return nouveau_abi16_put(abi16, ret);
 908 }
 909
 910 int
 911 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 912                            struct drm_file *file_priv)
 913 {
 914         struct drm_nouveau_gem_cpu_prep *req = data;
 915         struct drm_gem_object *gem;
 916         struct nouveau_bo *nvbo;
 917         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 918         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 919         long lret;
 920         int ret;
 921
 922         gem = drm_gem_object_lookup(file_priv, req->handle);
 923         if (!gem)
 924                 return -ENOENT;
 925         nvbo = nouveau_gem_object(gem);
 926
 927         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 928                                                    no_wait ? 0 : 30 * HZ);
 929         if (!lret)
 930                 ret = -EBUSY;
 931         else if (lret > 0)
 932                 ret = 0;
 933         else
 934                 ret = lret;
 935
 936         nouveau_bo_sync_for_cpu(nvbo);
 937         drm_gem_object_put(gem);
 938
 939         return ret;
 940 }
 941
 942 int
 943 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 944                            struct drm_file *file_priv)
 945 {
 946         struct drm_nouveau_gem_cpu_fini *req = data;
 947         struct drm_gem_object *gem;
 948         struct nouveau_bo *nvbo;
 949
 950         gem = drm_gem_object_lookup(file_priv, req->handle);
 951         if (!gem)
 952                 return -ENOENT;
 953         nvbo = nouveau_gem_object(gem);
 954
 955         nouveau_bo_sync_for_device(nvbo);
 956         drm_gem_object_put(gem);
 957         return 0;
 958 }
 959
 960 int
 961 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 962                        struct drm_file *file_priv)
 963 {
 964         struct drm_nouveau_gem_info *req = data;
 965         struct drm_gem_object *gem;
 966         int ret;
 967
 968         gem = drm_gem_object_lookup(file_priv, req->handle);
 969         if (!gem)
 970                 return -ENOENT;
 971
 972         ret = nouveau_gem_info(file_priv, gem, req);
 973         drm_gem_object_put(gem);
 974         return ret;
 975 }
 976