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 device *dev = drm->dev->dev;
  45         int ret;
  46
  47         ret = pm_runtime_get_sync(dev);
  48         if (WARN_ON(ret < 0 && ret != -EACCES))
  49                 return;
  50
  51         if (gem->import_attach)
  52                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  53
  54         drm_gem_object_release(gem);
  55
  56         /* reset filp so nouveau_bo_del_ttm() can test for it */
  57         gem->filp = NULL;
  58         ttm_bo_put(&nvbo->bo);
  59
  60         pm_runtime_mark_last_busy(dev);
  61         pm_runtime_put_autosuspend(dev);
  62 }
  63
  64 int
  65 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  66 {
  67         struct nouveau_cli *cli = nouveau_cli(file_priv);
  68         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  69         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  70         struct device *dev = drm->dev->dev;
  71         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  72         struct nouveau_vma *vma;
  73         int ret;
  74
  75         if (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, 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_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 147         struct nouveau_vma *vma;
 148         int ret;
 149
 150         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 151                 return;
 152
 153         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 154         if (ret)
 155                 return;
 156
 157         vma = nouveau_vma_find(nvbo, vmm);
 158         if (vma) {
 159                 if (--vma->refs == 0) {
 160                         ret = pm_runtime_get_sync(dev);
 161                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 162                                 nouveau_gem_object_unmap(nvbo, vma);
 163                                 pm_runtime_mark_last_busy(dev);
 164                                 pm_runtime_put_autosuspend(dev);
 165                         }
 166                 }
 167         }
 168         ttm_bo_unreserve(&nvbo->bo);
 169 }
 170
 171 int
 172 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 173                 uint32_t tile_mode, uint32_t tile_flags,
 174                 struct nouveau_bo **pnvbo)
 175 {
 176         struct nouveau_drm *drm = cli->drm;
 177         struct nouveau_bo *nvbo;
 178         u32 flags = 0;
 179         int ret;
 180
 181         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 182                 flags |= TTM_PL_FLAG_VRAM;
 183         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 184                 flags |= TTM_PL_FLAG_TT;
 185         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 186                 flags |= TTM_PL_FLAG_SYSTEM;
 187
 188         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 189                 flags |= TTM_PL_FLAG_UNCACHED;
 190
 191         nvbo = nouveau_bo_alloc(cli, size, flags, tile_mode, tile_flags);
 192         if (IS_ERR(nvbo))
 193                 return PTR_ERR(nvbo);
 194
 195         /* Initialize the embedded gem-object. We return a single gem-reference
 196          * to the caller, instead of a normal nouveau_bo ttm reference. */
 197         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 198         if (ret) {
 199                 nouveau_bo_ref(NULL, &nvbo);
 200                 return ret;
 201         }
 202
 203         ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
 204         if (ret) {
 205                 nouveau_bo_ref(NULL, &nvbo);
 206                 return ret;
 207         }
 208
 209         /* we restrict allowed domains on nv50+ to only the types
 210          * that were requested at creation time.  not possibly on
 211          * earlier chips without busting the ABI.
 212          */
 213         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 214                               NOUVEAU_GEM_DOMAIN_GART;
 215         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 216                 nvbo->valid_domains &= domain;
 217
 218         nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
 219         *pnvbo = nvbo;
 220         return 0;
 221 }
 222
 223 static int
 224 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 225                  struct drm_nouveau_gem_info *rep)
 226 {
 227         struct nouveau_cli *cli = nouveau_cli(file_priv);
 228         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 229         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 230         struct nouveau_vma *vma;
 231
 232         if (is_power_of_2(nvbo->valid_domains))
 233                 rep->domain = nvbo->valid_domains;
 234         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 235                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 236         else
 237                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 238         rep->offset = nvbo->bo.offset;
 239         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 240                 vma = nouveau_vma_find(nvbo, vmm);
 241                 if (!vma)
 242                         return -EINVAL;
 243
 244                 rep->offset = vma->addr;
 245         }
 246
 247         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 248         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 249         rep->tile_mode = nvbo->mode;
 250         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 251         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 252                 rep->tile_flags |= nvbo->kind << 8;
 253         else
 254         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 255                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 256         else
 257                 rep->tile_flags |= nvbo->zeta;
 258         return 0;
 259 }
 260
 261 int
 262 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 263                       struct drm_file *file_priv)
 264 {
 265         struct nouveau_cli *cli = nouveau_cli(file_priv);
 266         struct drm_nouveau_gem_new *req = data;
 267         struct nouveau_bo *nvbo = NULL;
 268         int ret = 0;
 269
 270         ret = nouveau_gem_new(cli, req->info.size, req->align,
 271                               req->info.domain, req->info.tile_mode,
 272                               req->info.tile_flags, &nvbo);
 273         if (ret)
 274                 return ret;
 275
 276         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 277                                     &req->info.handle);
 278         if (ret == 0) {
 279                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 280                 if (ret)
 281                         drm_gem_handle_delete(file_priv, req->info.handle);
 282         }
 283
 284         /* drop reference from allocate - handle holds it now */
 285         drm_gem_object_put_unlocked(&nvbo->bo.base);
 286         return ret;
 287 }
 288
 289 static int
 290 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 291                        uint32_t write_domains, uint32_t valid_domains)
 292 {
 293         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 294         struct ttm_buffer_object *bo = &nvbo->bo;
 295         uint32_t domains = valid_domains & nvbo->valid_domains &
 296                 (write_domains ? write_domains : read_domains);
 297         uint32_t pref_flags = 0, valid_flags = 0;
 298
 299         if (!domains)
 300                 return -EINVAL;
 301
 302         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 303                 valid_flags |= TTM_PL_FLAG_VRAM;
 304
 305         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 306                 valid_flags |= TTM_PL_FLAG_TT;
 307
 308         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 309             bo->mem.mem_type == TTM_PL_VRAM)
 310                 pref_flags |= TTM_PL_FLAG_VRAM;
 311
 312         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 313                  bo->mem.mem_type == TTM_PL_TT)
 314                 pref_flags |= TTM_PL_FLAG_TT;
 315
 316         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 317                 pref_flags |= TTM_PL_FLAG_VRAM;
 318
 319         else
 320                 pref_flags |= TTM_PL_FLAG_TT;
 321
 322         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 323
 324         return 0;
 325 }
 326
 327 struct validate_op {
 328         struct list_head list;
 329         struct ww_acquire_ctx ticket;
 330 };
 331
 332 static void
 333 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 334                         struct nouveau_fence *fence,
 335                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 336 {
 337         struct nouveau_bo *nvbo;
 338         struct drm_nouveau_gem_pushbuf_bo *b;
 339
 340         while (!list_empty(&op->list)) {
 341                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 342                 b = &pbbo[nvbo->pbbo_index];
 343
 344                 if (likely(fence)) {
 345                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 346
 347                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 348                                 struct nouveau_vma *vma =
 349                                         (void *)(unsigned long)b->user_priv;
 350                                 nouveau_fence_unref(&vma->fence);
 351                                 dma_fence_get(&fence->base);
 352                                 vma->fence = fence;
 353                         }
 354                 }
 355
 356                 if (unlikely(nvbo->validate_mapped)) {
 357                         ttm_bo_kunmap(&nvbo->kmap);
 358                         nvbo->validate_mapped = false;
 359                 }
 360
 361                 list_del(&nvbo->entry);
 362                 nvbo->reserved_by = NULL;
 363                 ttm_bo_unreserve(&nvbo->bo);
 364                 drm_gem_object_put_unlocked(&nvbo->bo.base);
 365         }
 366 }
 367
 368 static void
 369 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 370               struct nouveau_fence *fence,
 371               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 372 {
 373         validate_fini_no_ticket(op, chan, fence, pbbo);
 374         ww_acquire_fini(&op->ticket);
 375 }
 376
 377 static int
 378 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 379               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 380               int nr_buffers, struct validate_op *op)
 381 {
 382         struct nouveau_cli *cli = nouveau_cli(file_priv);
 383         int trycnt = 0;
 384         int ret = -EINVAL, i;
 385         struct nouveau_bo *res_bo = NULL;
 386         LIST_HEAD(gart_list);
 387         LIST_HEAD(vram_list);
 388         LIST_HEAD(both_list);
 389
 390         ww_acquire_init(&op->ticket, &reservation_ww_class);
 391 retry:
 392         if (++trycnt > 100000) {
 393                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 394                 return -EINVAL;
 395         }
 396
 397         for (i = 0; i < nr_buffers; i++) {
 398                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 399                 struct drm_gem_object *gem;
 400                 struct nouveau_bo *nvbo;
 401
 402                 gem = drm_gem_object_lookup(file_priv, b->handle);
 403                 if (!gem) {
 404                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 405                         ret = -ENOENT;
 406                         break;
 407                 }
 408                 nvbo = nouveau_gem_object(gem);
 409                 if (nvbo == res_bo) {
 410                         res_bo = NULL;
 411                         drm_gem_object_put_unlocked(gem);
 412                         continue;
 413                 }
 414
 415                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 416                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 417                                       "validation list\n", b->handle);
 418                         drm_gem_object_put_unlocked(gem);
 419                         ret = -EINVAL;
 420                         break;
 421                 }
 422
 423                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 424                 if (ret) {
 425                         list_splice_tail_init(&vram_list, &op->list);
 426                         list_splice_tail_init(&gart_list, &op->list);
 427                         list_splice_tail_init(&both_list, &op->list);
 428                         validate_fini_no_ticket(op, chan, NULL, NULL);
 429                         if (unlikely(ret == -EDEADLK)) {
 430                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 431                                                               &op->ticket);
 432                                 if (!ret)
 433                                         res_bo = nvbo;
 434                         }
 435                         if (unlikely(ret)) {
 436                                 if (ret != -ERESTARTSYS)
 437                                         NV_PRINTK(err, cli, "fail reserve\n");
 438                                 break;
 439                         }
 440                 }
 441
 442                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 443                         struct nouveau_vmm *vmm = chan->vmm;
 444                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 445                         if (!vma) {
 446                                 NV_PRINTK(err, cli, "vma not found!\n");
 447                                 ret = -EINVAL;
 448                                 break;
 449                         }
 450
 451                         b->user_priv = (uint64_t)(unsigned long)vma;
 452                 } else {
 453                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 454                 }
 455
 456                 nvbo->reserved_by = file_priv;
 457                 nvbo->pbbo_index = i;
 458                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 459                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 460                         list_add_tail(&nvbo->entry, &both_list);
 461                 else
 462                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 463                         list_add_tail(&nvbo->entry, &vram_list);
 464                 else
 465                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 466                         list_add_tail(&nvbo->entry, &gart_list);
 467                 else {
 468                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 469                                  b->valid_domains);
 470                         list_add_tail(&nvbo->entry, &both_list);
 471                         ret = -EINVAL;
 472                         break;
 473                 }
 474                 if (nvbo == res_bo)
 475                         goto retry;
 476         }
 477
 478         ww_acquire_done(&op->ticket);
 479         list_splice_tail(&vram_list, &op->list);
 480         list_splice_tail(&gart_list, &op->list);
 481         list_splice_tail(&both_list, &op->list);
 482         if (ret)
 483                 validate_fini(op, chan, NULL, NULL);
 484         return ret;
 485
 486 }
 487
 488 static int
 489 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 490               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 491               uint64_t user_pbbo_ptr)
 492 {
 493         struct nouveau_drm *drm = chan->drm;
 494         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 495                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 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->bo.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->bo.offset;
 537                         b->presumed.valid = 0;
 538                         relocs++;
 539
 540                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 541                                              &b->presumed, sizeof(b->presumed)))
 542                                 return -EFAULT;
 543                 }
 544         }
 545
 546         return relocs;
 547 }
 548
 549 static int
 550 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 551                              struct drm_file *file_priv,
 552                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 553                              uint64_t user_buffers, int nr_buffers,
 554                              struct validate_op *op, int *apply_relocs)
 555 {
 556         struct nouveau_cli *cli = nouveau_cli(file_priv);
 557         int ret;
 558
 559         INIT_LIST_HEAD(&op->list);
 560
 561         if (nr_buffers == 0)
 562                 return 0;
 563
 564         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 565         if (unlikely(ret)) {
 566                 if (ret != -ERESTARTSYS)
 567                         NV_PRINTK(err, cli, "validate_init\n");
 568                 return ret;
 569         }
 570
 571         ret = validate_list(chan, cli, &op->list, pbbo, user_buffers);
 572         if (unlikely(ret < 0)) {
 573                 if (ret != -ERESTARTSYS)
 574                         NV_PRINTK(err, cli, "validating bo list\n");
 575                 validate_fini(op, chan, NULL, NULL);
 576                 return ret;
 577         }
 578         *apply_relocs = ret;
 579         return 0;
 580 }
 581
 582 static inline void
 583 u_free(void *addr)
 584 {
 585         kvfree(addr);
 586 }
 587
 588 static inline void *
 589 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 590 {
 591         void *mem;
 592         void __user *userptr = (void __force __user *)(uintptr_t)user;
 593
 594         size *= nmemb;
 595
 596         mem = kvmalloc(size, GFP_KERNEL);
 597         if (!mem)
 598                 return ERR_PTR(-ENOMEM);
 599
 600         if (copy_from_user(mem, userptr, size)) {
 601                 u_free(mem);
 602                 return ERR_PTR(-EFAULT);
 603         }
 604
 605         return mem;
 606 }
 607
 608 static int
 609 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 610                                 struct drm_nouveau_gem_pushbuf *req,
 611                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 612 {
 613         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 614         int ret = 0;
 615         unsigned i;
 616
 617         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 618         if (IS_ERR(reloc))
 619                 return PTR_ERR(reloc);
 620
 621         for (i = 0; i < req->nr_relocs; i++) {
 622                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 623                 struct drm_nouveau_gem_pushbuf_bo *b;
 624                 struct nouveau_bo *nvbo;
 625                 uint32_t data;
 626
 627                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 628                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 629                         ret = -EINVAL;
 630                         break;
 631                 }
 632
 633                 b = &bo[r->bo_index];
 634                 if (b->presumed.valid)
 635                         continue;
 636
 637                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 638                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 639                         ret = -EINVAL;
 640                         break;
 641                 }
 642                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 643
 644                 if (unlikely(r->reloc_bo_offset + 4 >
 645                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 646                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 647                         ret = -EINVAL;
 648                         break;
 649                 }
 650
 651                 if (!nvbo->kmap.virtual) {
 652                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 653                                           &nvbo->kmap);
 654                         if (ret) {
 655                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 656                                 break;
 657                         }
 658                         nvbo->validate_mapped = true;
 659                 }
 660
 661                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 662                         data = b->presumed.offset + r->data;
 663                 else
 664                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 665                         data = (b->presumed.offset + r->data) >> 32;
 666                 else
 667                         data = r->data;
 668
 669                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 670                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 671                                 data |= r->tor;
 672                         else
 673                                 data |= r->vor;
 674                 }
 675
 676                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 677                 if (ret) {
 678                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 679                         break;
 680                 }
 681
 682                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 683         }
 684
 685         u_free(reloc);
 686         return ret;
 687 }
 688
 689 int
 690 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 691                           struct drm_file *file_priv)
 692 {
 693         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 694         struct nouveau_cli *cli = nouveau_cli(file_priv);
 695         struct nouveau_abi16_chan *temp;
 696         struct nouveau_drm *drm = nouveau_drm(dev);
 697         struct drm_nouveau_gem_pushbuf *req = data;
 698         struct drm_nouveau_gem_pushbuf_push *push;
 699         struct drm_nouveau_gem_pushbuf_bo *bo;
 700         struct nouveau_channel *chan = NULL;
 701         struct validate_op op;
 702         struct nouveau_fence *fence = NULL;
 703         int i, j, ret = 0, do_reloc = 0;
 704
 705         if (unlikely(!abi16))
 706                 return -ENOMEM;
 707
 708         list_for_each_entry(temp, &abi16->channels, head) {
 709                 if (temp->chan->chid == req->channel) {
 710                         chan = temp->chan;
 711                         break;
 712                 }
 713         }
 714
 715         if (!chan)
 716                 return nouveau_abi16_put(abi16, -ENOENT);
 717
 718         req->vram_available = drm->gem.vram_available;
 719         req->gart_available = drm->gem.gart_available;
 720         if (unlikely(req->nr_push == 0))
 721                 goto out_next;
 722
 723         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 724                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 725                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 726                 return nouveau_abi16_put(abi16, -EINVAL);
 727         }
 728
 729         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 730                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 731                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 732                 return nouveau_abi16_put(abi16, -EINVAL);
 733         }
 734
 735         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 736                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 737                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 738                 return nouveau_abi16_put(abi16, -EINVAL);
 739         }
 740
 741         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 742         if (IS_ERR(push))
 743                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 744
 745         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 746         if (IS_ERR(bo)) {
 747                 u_free(push);
 748                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 749         }
 750
 751         /* Ensure all push buffers are on validate list */
 752         for (i = 0; i < req->nr_push; i++) {
 753                 if (push[i].bo_index >= req->nr_buffers) {
 754                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 755                         ret = -EINVAL;
 756                         goto out_prevalid;
 757                 }
 758         }
 759
 760         /* Validate buffer list */
 761         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 762                                            req->nr_buffers, &op, &do_reloc);
 763         if (ret) {
 764                 if (ret != -ERESTARTSYS)
 765                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 766                 goto out_prevalid;
 767         }
 768
 769         /* Apply any relocations that are required */
 770         if (do_reloc) {
 771                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 772                 if (ret) {
 773                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 774                         goto out;
 775                 }
 776         }
 777
 778         if (chan->dma.ib_max) {
 779                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 780                 if (ret) {
 781                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 782                         goto out;
 783                 }
 784
 785                 for (i = 0; i < req->nr_push; i++) {
 786                         struct nouveau_vma *vma = (void *)(unsigned long)
 787                                 bo[push[i].bo_index].user_priv;
 788
 789                         nv50_dma_push(chan, vma->addr + push[i].offset,
 790                                       push[i].length);
 791                 }
 792         } else
 793         if (drm->client.device.info.chipset >= 0x25) {
 794                 ret = RING_SPACE(chan, req->nr_push * 2);
 795                 if (ret) {
 796                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 797                         goto out;
 798                 }
 799
 800                 for (i = 0; i < req->nr_push; i++) {
 801                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 802                                 bo[push[i].bo_index].user_priv;
 803
 804                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 805                         OUT_RING(chan, 0);
 806                 }
 807         } else {
 808                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 809                 if (ret) {
 810                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 811                         goto out;
 812                 }
 813
 814                 for (i = 0; i < req->nr_push; i++) {
 815                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 816                                 bo[push[i].bo_index].user_priv;
 817                         uint32_t cmd;
 818
 819                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 820                         cmd |= 0x20000000;
 821                         if (unlikely(cmd != req->suffix0)) {
 822                                 if (!nvbo->kmap.virtual) {
 823                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 824                                                           nvbo->bo.mem.
 825                                                           num_pages,
 826                                                           &nvbo->kmap);
 827                                         if (ret) {
 828                                                 WIND_RING(chan);
 829                                                 goto out;
 830                                         }
 831                                         nvbo->validate_mapped = true;
 832                                 }
 833
 834                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 835                                                 push[i].length - 8) / 4, cmd);
 836                         }
 837
 838                         OUT_RING(chan, 0x20000000 |
 839                                       (nvbo->bo.offset + push[i].offset));
 840                         OUT_RING(chan, 0);
 841                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 842                                 OUT_RING(chan, 0);
 843                 }
 844         }
 845
 846         ret = nouveau_fence_new(chan, false, &fence);
 847         if (ret) {
 848                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 849                 WIND_RING(chan);
 850                 goto out;
 851         }
 852
 853 out:
 854         validate_fini(&op, chan, fence, bo);
 855         nouveau_fence_unref(&fence);
 856
 857 out_prevalid:
 858         u_free(bo);
 859         u_free(push);
 860
 861 out_next:
 862         if (chan->dma.ib_max) {
 863                 req->suffix0 = 0x00000000;
 864                 req->suffix1 = 0x00000000;
 865         } else
 866         if (drm->client.device.info.chipset >= 0x25) {
 867                 req->suffix0 = 0x00020000;
 868                 req->suffix1 = 0x00000000;
 869         } else {
 870                 req->suffix0 = 0x20000000 |
 871                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 872                 req->suffix1 = 0x00000000;
 873         }
 874
 875         return nouveau_abi16_put(abi16, ret);
 876 }
 877
 878 int
 879 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 880                            struct drm_file *file_priv)
 881 {
 882         struct drm_nouveau_gem_cpu_prep *req = data;
 883         struct drm_gem_object *gem;
 884         struct nouveau_bo *nvbo;
 885         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 886         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 887         long lret;
 888         int ret;
 889
 890         gem = drm_gem_object_lookup(file_priv, req->handle);
 891         if (!gem)
 892                 return -ENOENT;
 893         nvbo = nouveau_gem_object(gem);
 894
 895         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 896                                                    no_wait ? 0 : 30 * HZ);
 897         if (!lret)
 898                 ret = -EBUSY;
 899         else if (lret > 0)
 900                 ret = 0;
 901         else
 902                 ret = lret;
 903
 904         nouveau_bo_sync_for_cpu(nvbo);
 905         drm_gem_object_put_unlocked(gem);
 906
 907         return ret;
 908 }
 909
 910 int
 911 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 912                            struct drm_file *file_priv)
 913 {
 914         struct drm_nouveau_gem_cpu_fini *req = data;
 915         struct drm_gem_object *gem;
 916         struct nouveau_bo *nvbo;
 917
 918         gem = drm_gem_object_lookup(file_priv, req->handle);
 919         if (!gem)
 920                 return -ENOENT;
 921         nvbo = nouveau_gem_object(gem);
 922
 923         nouveau_bo_sync_for_device(nvbo);
 924         drm_gem_object_put_unlocked(gem);
 925         return 0;
 926 }
 927
 928 int
 929 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 930                        struct drm_file *file_priv)
 931 {
 932         struct drm_nouveau_gem_info *req = data;
 933         struct drm_gem_object *gem;
 934         int ret;
 935
 936         gem = drm_gem_object_lookup(file_priv, req->handle);
 937         if (!gem)
 938                 return -ENOENT;
 939
 940         ret = nouveau_gem_info(file_priv, gem, req);
 941         drm_gem_object_put_unlocked(gem);
 942         return ret;
 943 }
 944