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_vma_del(&vma);
 103 }
 104
 105 static void
 106 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 107 {
 108         struct nouveau_gem_object_unmap *work =
 109                 container_of(w, typeof(*work), work);
 110         nouveau_gem_object_delete(work->vma);
 111         kfree(work);
 112 }
 113
 114 static void
 115 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 116 {
 117         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 118         struct reservation_object *resv = nvbo->bo.resv;
 119         struct reservation_object_list *fobj;
 120         struct nouveau_gem_object_unmap *work;
 121         struct dma_fence *fence = NULL;
 122
 123         fobj = reservation_object_get_list(resv);
 124
 125         list_del_init(&vma->head);
 126
 127         if (fobj && fobj->shared_count > 1)
 128                 ttm_bo_wait(&nvbo->bo, false, false);
 129         else if (fobj && fobj->shared_count == 1)
 130                 fence = rcu_dereference_protected(fobj->shared[0],
 131                                                 reservation_object_held(resv));
 132         else
 133                 fence = reservation_object_get_excl(nvbo->bo.resv);
 134
 135         if (!fence || !mapped) {
 136                 nouveau_gem_object_delete(vma);
 137                 return;
 138         }
 139
 140         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 141                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 142                 nouveau_gem_object_delete(vma);
 143                 return;
 144         }
 145
 146         work->work.func = nouveau_gem_object_delete_work;
 147         work->vma = vma;
 148         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 149 }
 150
 151 void
 152 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 153 {
 154         struct nouveau_cli *cli = nouveau_cli(file_priv);
 155         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 156         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 157         struct device *dev = drm->dev->dev;
 158         struct nouveau_vma *vma;
 159         int ret;
 160
 161         if (cli->vmm.vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 162                 return;
 163
 164         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 165         if (ret)
 166                 return;
 167
 168         vma = nouveau_vma_find(nvbo, &cli->vmm);
 169         if (vma) {
 170                 if (--vma->refs == 0) {
 171                         ret = pm_runtime_get_sync(dev);
 172                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 173                                 nouveau_gem_object_unmap(nvbo, vma);
 174                                 pm_runtime_mark_last_busy(dev);
 175                                 pm_runtime_put_autosuspend(dev);
 176                         }
 177                 }
 178         }
 179         ttm_bo_unreserve(&nvbo->bo);
 180 }
 181
 182 int
 183 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 184                 uint32_t tile_mode, uint32_t tile_flags,
 185                 struct nouveau_bo **pnvbo)
 186 {
 187         struct nouveau_drm *drm = cli->drm;
 188         struct nouveau_bo *nvbo;
 189         u32 flags = 0;
 190         int ret;
 191
 192         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 193                 flags |= TTM_PL_FLAG_VRAM;
 194         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 195                 flags |= TTM_PL_FLAG_TT;
 196         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 197                 flags |= TTM_PL_FLAG_SYSTEM;
 198
 199         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 200                 flags |= TTM_PL_FLAG_UNCACHED;
 201
 202         ret = nouveau_bo_new(cli, size, align, flags, tile_mode,
 203                              tile_flags, NULL, NULL, pnvbo);
 204         if (ret)
 205                 return ret;
 206         nvbo = *pnvbo;
 207
 208         /* we restrict allowed domains on nv50+ to only the types
 209          * that were requested at creation time.  not possibly on
 210          * earlier chips without busting the ABI.
 211          */
 212         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 213                               NOUVEAU_GEM_DOMAIN_GART;
 214         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 215                 nvbo->valid_domains &= domain;
 216
 217         /* Initialize the embedded gem-object. We return a single gem-reference
 218          * to the caller, instead of a normal nouveau_bo ttm reference. */
 219         ret = drm_gem_object_init(drm->dev, &nvbo->gem, nvbo->bo.mem.size);
 220         if (ret) {
 221                 nouveau_bo_ref(NULL, pnvbo);
 222                 return -ENOMEM;
 223         }
 224
 225         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 226         return 0;
 227 }
 228
 229 static int
 230 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 231                  struct drm_nouveau_gem_info *rep)
 232 {
 233         struct nouveau_cli *cli = nouveau_cli(file_priv);
 234         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 235         struct nouveau_vma *vma;
 236
 237         if (is_power_of_2(nvbo->valid_domains))
 238                 rep->domain = nvbo->valid_domains;
 239         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 240                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 241         else
 242                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 243         rep->offset = nvbo->bo.offset;
 244         if (cli->vmm.vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 245                 vma = nouveau_vma_find(nvbo, &cli->vmm);
 246                 if (!vma)
 247                         return -EINVAL;
 248
 249                 rep->offset = vma->addr;
 250         }
 251
 252         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 253         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 254         rep->tile_mode = nvbo->mode;
 255         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 256         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 257                 rep->tile_flags |= nvbo->kind << 8;
 258         else
 259         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 260                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 261         else
 262                 rep->tile_flags |= nvbo->zeta;
 263         return 0;
 264 }
 265
 266 int
 267 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 268                       struct drm_file *file_priv)
 269 {
 270         struct nouveau_cli *cli = nouveau_cli(file_priv);
 271         struct drm_nouveau_gem_new *req = data;
 272         struct nouveau_bo *nvbo = NULL;
 273         int ret = 0;
 274
 275         ret = nouveau_gem_new(cli, req->info.size, req->align,
 276                               req->info.domain, req->info.tile_mode,
 277                               req->info.tile_flags, &nvbo);
 278         if (ret)
 279                 return ret;
 280
 281         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 282         if (ret == 0) {
 283                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 284                 if (ret)
 285                         drm_gem_handle_delete(file_priv, req->info.handle);
 286         }
 287
 288         /* drop reference from allocate - handle holds it now */
 289         drm_gem_object_unreference_unlocked(&nvbo->gem);
 290         return ret;
 291 }
 292
 293 static int
 294 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 295                        uint32_t write_domains, uint32_t valid_domains)
 296 {
 297         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 298         struct ttm_buffer_object *bo = &nvbo->bo;
 299         uint32_t domains = valid_domains & nvbo->valid_domains &
 300                 (write_domains ? write_domains : read_domains);
 301         uint32_t pref_flags = 0, valid_flags = 0;
 302
 303         if (!domains)
 304                 return -EINVAL;
 305
 306         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 307                 valid_flags |= TTM_PL_FLAG_VRAM;
 308
 309         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 310                 valid_flags |= TTM_PL_FLAG_TT;
 311
 312         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 313             bo->mem.mem_type == TTM_PL_VRAM)
 314                 pref_flags |= TTM_PL_FLAG_VRAM;
 315
 316         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 317                  bo->mem.mem_type == TTM_PL_TT)
 318                 pref_flags |= TTM_PL_FLAG_TT;
 319
 320         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 321                 pref_flags |= TTM_PL_FLAG_VRAM;
 322
 323         else
 324                 pref_flags |= TTM_PL_FLAG_TT;
 325
 326         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 327
 328         return 0;
 329 }
 330
 331 struct validate_op {
 332         struct list_head list;
 333         struct ww_acquire_ctx ticket;
 334 };
 335
 336 static void
 337 validate_fini_no_ticket(struct validate_op *op, 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 (unlikely(nvbo->validate_mapped)) {
 351                         ttm_bo_kunmap(&nvbo->kmap);
 352                         nvbo->validate_mapped = false;
 353                 }
 354
 355                 list_del(&nvbo->entry);
 356                 nvbo->reserved_by = NULL;
 357                 ttm_bo_unreserve_ticket(&nvbo->bo, &op->ticket);
 358                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 359         }
 360 }
 361
 362 static void
 363 validate_fini(struct validate_op *op, struct nouveau_fence *fence,
 364               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 365 {
 366         validate_fini_no_ticket(op, fence, pbbo);
 367         ww_acquire_fini(&op->ticket);
 368 }
 369
 370 static int
 371 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 372               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 373               int nr_buffers, struct validate_op *op)
 374 {
 375         struct nouveau_cli *cli = nouveau_cli(file_priv);
 376         int trycnt = 0;
 377         int ret = -EINVAL, i;
 378         struct nouveau_bo *res_bo = NULL;
 379         LIST_HEAD(gart_list);
 380         LIST_HEAD(vram_list);
 381         LIST_HEAD(both_list);
 382
 383         ww_acquire_init(&op->ticket, &reservation_ww_class);
 384 retry:
 385         if (++trycnt > 100000) {
 386                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 387                 return -EINVAL;
 388         }
 389
 390         for (i = 0; i < nr_buffers; i++) {
 391                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 392                 struct drm_gem_object *gem;
 393                 struct nouveau_bo *nvbo;
 394
 395                 gem = drm_gem_object_lookup(file_priv, b->handle);
 396                 if (!gem) {
 397                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 398                         ret = -ENOENT;
 399                         break;
 400                 }
 401                 nvbo = nouveau_gem_object(gem);
 402                 if (nvbo == res_bo) {
 403                         res_bo = NULL;
 404                         drm_gem_object_unreference_unlocked(gem);
 405                         continue;
 406                 }
 407
 408                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 409                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 410                                       "validation list\n", b->handle);
 411                         drm_gem_object_unreference_unlocked(gem);
 412                         ret = -EINVAL;
 413                         break;
 414                 }
 415
 416                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 417                 if (ret) {
 418                         list_splice_tail_init(&vram_list, &op->list);
 419                         list_splice_tail_init(&gart_list, &op->list);
 420                         list_splice_tail_init(&both_list, &op->list);
 421                         validate_fini_no_ticket(op, NULL, NULL);
 422                         if (unlikely(ret == -EDEADLK)) {
 423                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 424                                                               &op->ticket);
 425                                 if (!ret)
 426                                         res_bo = nvbo;
 427                         }
 428                         if (unlikely(ret)) {
 429                                 if (ret != -ERESTARTSYS)
 430                                         NV_PRINTK(err, cli, "fail reserve\n");
 431                                 break;
 432                         }
 433                 }
 434
 435                 if (cli->vmm.vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 436                         struct nouveau_vmm *vmm = &cli->vmm;
 437                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 438                         if (!vma) {
 439                                 NV_PRINTK(err, cli, "vma not found!\n");
 440                                 ret = -EINVAL;
 441                                 break;
 442                         }
 443
 444                         b->user_priv = (uint64_t)(unsigned long)vma;
 445                 } else {
 446                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 447                 }
 448
 449                 nvbo->reserved_by = file_priv;
 450                 nvbo->pbbo_index = i;
 451                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 452                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 453                         list_add_tail(&nvbo->entry, &both_list);
 454                 else
 455                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 456                         list_add_tail(&nvbo->entry, &vram_list);
 457                 else
 458                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 459                         list_add_tail(&nvbo->entry, &gart_list);
 460                 else {
 461                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 462                                  b->valid_domains);
 463                         list_add_tail(&nvbo->entry, &both_list);
 464                         ret = -EINVAL;
 465                         break;
 466                 }
 467                 if (nvbo == res_bo)
 468                         goto retry;
 469         }
 470
 471         ww_acquire_done(&op->ticket);
 472         list_splice_tail(&vram_list, &op->list);
 473         list_splice_tail(&gart_list, &op->list);
 474         list_splice_tail(&both_list, &op->list);
 475         if (ret)
 476                 validate_fini(op, NULL, NULL);
 477         return ret;
 478
 479 }
 480
 481 static int
 482 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 483               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 484               uint64_t user_pbbo_ptr)
 485 {
 486         struct nouveau_drm *drm = chan->drm;
 487         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 488                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 489         struct nouveau_bo *nvbo;
 490         int ret, relocs = 0;
 491
 492         list_for_each_entry(nvbo, list, entry) {
 493                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 494
 495                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 496                                              b->write_domains,
 497                                              b->valid_domains);
 498                 if (unlikely(ret)) {
 499                         NV_PRINTK(err, cli, "fail set_domain\n");
 500                         return ret;
 501                 }
 502
 503                 ret = nouveau_bo_validate(nvbo, true, false);
 504                 if (unlikely(ret)) {
 505                         if (ret != -ERESTARTSYS)
 506                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 507                         return ret;
 508                 }
 509
 510                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 511                 if (unlikely(ret)) {
 512                         if (ret != -ERESTARTSYS)
 513                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 514                         return ret;
 515                 }
 516
 517                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 518                         if (nvbo->bo.offset == b->presumed.offset &&
 519                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 520                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 521                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 522                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 523                                 continue;
 524
 525                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 526                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 527                         else
 528                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 529                         b->presumed.offset = nvbo->bo.offset;
 530                         b->presumed.valid = 0;
 531                         relocs++;
 532
 533                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 534                                              &b->presumed, sizeof(b->presumed)))
 535                                 return -EFAULT;
 536                 }
 537         }
 538
 539         return relocs;
 540 }
 541
 542 static int
 543 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 544                              struct drm_file *file_priv,
 545                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 546                              uint64_t user_buffers, int nr_buffers,
 547                              struct validate_op *op, int *apply_relocs)
 548 {
 549         struct nouveau_cli *cli = nouveau_cli(file_priv);
 550         int ret;
 551
 552         INIT_LIST_HEAD(&op->list);
 553
 554         if (nr_buffers == 0)
 555                 return 0;
 556
 557         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 558         if (unlikely(ret)) {
 559                 if (ret != -ERESTARTSYS)
 560                         NV_PRINTK(err, cli, "validate_init\n");
 561                 return ret;
 562         }
 563
 564         ret = validate_list(chan, cli, &op->list, pbbo, user_buffers);
 565         if (unlikely(ret < 0)) {
 566                 if (ret != -ERESTARTSYS)
 567                         NV_PRINTK(err, cli, "validating bo list\n");
 568                 validate_fini(op, NULL, NULL);
 569                 return ret;
 570         }
 571         *apply_relocs = ret;
 572         return 0;
 573 }
 574
 575 static inline void
 576 u_free(void *addr)
 577 {
 578         kvfree(addr);
 579 }
 580
 581 static inline void *
 582 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 583 {
 584         void *mem;
 585         void __user *userptr = (void __force __user *)(uintptr_t)user;
 586
 587         size *= nmemb;
 588
 589         mem = kvmalloc(size, GFP_KERNEL);
 590         if (!mem)
 591                 return ERR_PTR(-ENOMEM);
 592
 593         if (copy_from_user(mem, userptr, size)) {
 594                 u_free(mem);
 595                 return ERR_PTR(-EFAULT);
 596         }
 597
 598         return mem;
 599 }
 600
 601 static int
 602 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 603                                 struct drm_nouveau_gem_pushbuf *req,
 604                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 605 {
 606         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 607         int ret = 0;
 608         unsigned i;
 609
 610         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 611         if (IS_ERR(reloc))
 612                 return PTR_ERR(reloc);
 613
 614         for (i = 0; i < req->nr_relocs; i++) {
 615                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 616                 struct drm_nouveau_gem_pushbuf_bo *b;
 617                 struct nouveau_bo *nvbo;
 618                 uint32_t data;
 619
 620                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 621                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 622                         ret = -EINVAL;
 623                         break;
 624                 }
 625
 626                 b = &bo[r->bo_index];
 627                 if (b->presumed.valid)
 628                         continue;
 629
 630                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 631                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 632                         ret = -EINVAL;
 633                         break;
 634                 }
 635                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 636
 637                 if (unlikely(r->reloc_bo_offset + 4 >
 638                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 639                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 640                         ret = -EINVAL;
 641                         break;
 642                 }
 643
 644                 if (!nvbo->kmap.virtual) {
 645                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 646                                           &nvbo->kmap);
 647                         if (ret) {
 648                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 649                                 break;
 650                         }
 651                         nvbo->validate_mapped = true;
 652                 }
 653
 654                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 655                         data = b->presumed.offset + r->data;
 656                 else
 657                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 658                         data = (b->presumed.offset + r->data) >> 32;
 659                 else
 660                         data = r->data;
 661
 662                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 663                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 664                                 data |= r->tor;
 665                         else
 666                                 data |= r->vor;
 667                 }
 668
 669                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 670                 if (ret) {
 671                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 672                         break;
 673                 }
 674
 675                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 676         }
 677
 678         u_free(reloc);
 679         return ret;
 680 }
 681
 682 int
 683 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 684                           struct drm_file *file_priv)
 685 {
 686         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 687         struct nouveau_cli *cli = nouveau_cli(file_priv);
 688         struct nouveau_abi16_chan *temp;
 689         struct nouveau_drm *drm = nouveau_drm(dev);
 690         struct drm_nouveau_gem_pushbuf *req = data;
 691         struct drm_nouveau_gem_pushbuf_push *push;
 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, do_reloc = 0;
 697
 698         if (unlikely(!abi16))
 699                 return -ENOMEM;
 700
 701         list_for_each_entry(temp, &abi16->channels, head) {
 702                 if (temp->chan->chid == req->channel) {
 703                         chan = temp->chan;
 704                         break;
 705                 }
 706         }
 707
 708         if (!chan)
 709                 return nouveau_abi16_put(abi16, -ENOENT);
 710
 711         req->vram_available = drm->gem.vram_available;
 712         req->gart_available = drm->gem.gart_available;
 713         if (unlikely(req->nr_push == 0))
 714                 goto out_next;
 715
 716         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 717                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 718                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 719                 return nouveau_abi16_put(abi16, -EINVAL);
 720         }
 721
 722         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 723                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 724                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 725                 return nouveau_abi16_put(abi16, -EINVAL);
 726         }
 727
 728         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 729                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 730                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 731                 return nouveau_abi16_put(abi16, -EINVAL);
 732         }
 733
 734         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 735         if (IS_ERR(push))
 736                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 737
 738         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 739         if (IS_ERR(bo)) {
 740                 u_free(push);
 741                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 742         }
 743
 744         /* Ensure all push buffers are on validate list */
 745         for (i = 0; i < req->nr_push; i++) {
 746                 if (push[i].bo_index >= req->nr_buffers) {
 747                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 748                         ret = -EINVAL;
 749                         goto out_prevalid;
 750                 }
 751         }
 752
 753         /* Validate buffer list */
 754         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 755                                            req->nr_buffers, &op, &do_reloc);
 756         if (ret) {
 757                 if (ret != -ERESTARTSYS)
 758                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 759                 goto out_prevalid;
 760         }
 761
 762         /* Apply any relocations that are required */
 763         if (do_reloc) {
 764                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 765                 if (ret) {
 766                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 767                         goto out;
 768                 }
 769         }
 770
 771         if (chan->dma.ib_max) {
 772                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 773                 if (ret) {
 774                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 775                         goto out;
 776                 }
 777
 778                 for (i = 0; i < req->nr_push; i++) {
 779                         struct nouveau_vma *vma = (void *)(unsigned long)
 780                                 bo[push[i].bo_index].user_priv;
 781
 782                         nv50_dma_push(chan, vma->addr + push[i].offset,
 783                                       push[i].length);
 784                 }
 785         } else
 786         if (drm->client.device.info.chipset >= 0x25) {
 787                 ret = RING_SPACE(chan, req->nr_push * 2);
 788                 if (ret) {
 789                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 790                         goto out;
 791                 }
 792
 793                 for (i = 0; i < req->nr_push; i++) {
 794                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 795                                 bo[push[i].bo_index].user_priv;
 796
 797                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 798                         OUT_RING(chan, 0);
 799                 }
 800         } else {
 801                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 802                 if (ret) {
 803                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 804                         goto out;
 805                 }
 806
 807                 for (i = 0; i < req->nr_push; i++) {
 808                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 809                                 bo[push[i].bo_index].user_priv;
 810                         uint32_t cmd;
 811
 812                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 813                         cmd |= 0x20000000;
 814                         if (unlikely(cmd != req->suffix0)) {
 815                                 if (!nvbo->kmap.virtual) {
 816                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 817                                                           nvbo->bo.mem.
 818                                                           num_pages,
 819                                                           &nvbo->kmap);
 820                                         if (ret) {
 821                                                 WIND_RING(chan);
 822                                                 goto out;
 823                                         }
 824                                         nvbo->validate_mapped = true;
 825                                 }
 826
 827                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 828                                                 push[i].length - 8) / 4, cmd);
 829                         }
 830
 831                         OUT_RING(chan, 0x20000000 |
 832                                       (nvbo->bo.offset + push[i].offset));
 833                         OUT_RING(chan, 0);
 834                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 835                                 OUT_RING(chan, 0);
 836                 }
 837         }
 838
 839         ret = nouveau_fence_new(chan, false, &fence);
 840         if (ret) {
 841                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 842                 WIND_RING(chan);
 843                 goto out;
 844         }
 845
 846 out:
 847         validate_fini(&op, fence, bo);
 848         nouveau_fence_unref(&fence);
 849
 850 out_prevalid:
 851         u_free(bo);
 852         u_free(push);
 853
 854 out_next:
 855         if (chan->dma.ib_max) {
 856                 req->suffix0 = 0x00000000;
 857                 req->suffix1 = 0x00000000;
 858         } else
 859         if (drm->client.device.info.chipset >= 0x25) {
 860                 req->suffix0 = 0x00020000;
 861                 req->suffix1 = 0x00000000;
 862         } else {
 863                 req->suffix0 = 0x20000000 |
 864                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 865                 req->suffix1 = 0x00000000;
 866         }
 867
 868         return nouveau_abi16_put(abi16, ret);
 869 }
 870
 871 int
 872 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 873                            struct drm_file *file_priv)
 874 {
 875         struct drm_nouveau_gem_cpu_prep *req = data;
 876         struct drm_gem_object *gem;
 877         struct nouveau_bo *nvbo;
 878         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 879         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 880         long lret;
 881         int ret;
 882
 883         gem = drm_gem_object_lookup(file_priv, req->handle);
 884         if (!gem)
 885                 return -ENOENT;
 886         nvbo = nouveau_gem_object(gem);
 887
 888         lret = reservation_object_wait_timeout_rcu(nvbo->bo.resv, write, true,
 889                                                    no_wait ? 0 : 30 * HZ);
 890         if (!lret)
 891                 ret = -EBUSY;
 892         else if (lret > 0)
 893                 ret = 0;
 894         else
 895                 ret = lret;
 896
 897         nouveau_bo_sync_for_cpu(nvbo);
 898         drm_gem_object_unreference_unlocked(gem);
 899
 900         return ret;
 901 }
 902
 903 int
 904 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 905                            struct drm_file *file_priv)
 906 {
 907         struct drm_nouveau_gem_cpu_fini *req = data;
 908         struct drm_gem_object *gem;
 909         struct nouveau_bo *nvbo;
 910
 911         gem = drm_gem_object_lookup(file_priv, req->handle);
 912         if (!gem)
 913                 return -ENOENT;
 914         nvbo = nouveau_gem_object(gem);
 915
 916         nouveau_bo_sync_for_device(nvbo);
 917         drm_gem_object_unreference_unlocked(gem);
 918         return 0;
 919 }
 920
 921 int
 922 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 923                        struct drm_file *file_priv)
 924 {
 925         struct drm_nouveau_gem_info *req = data;
 926         struct drm_gem_object *gem;
 927         int ret;
 928
 929         gem = drm_gem_object_lookup(file_priv, req->handle);
 930         if (!gem)
 931                 return -ENOENT;
 932
 933         ret = nouveau_gem_info(file_priv, gem, req);
 934         drm_gem_object_unreference_unlocked(gem);
 935         return ret;
 936 }
 937