drivers/gpu/drm/nouveau/nouveau_gem.c

   1 /*
   2  * Copyright (C) 2008 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <drm/drm_gem_ttm_helper.h>
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_fence.h"
  32 #include "nouveau_abi16.h"
  33
  34 #include "nouveau_ttm.h"
  35 #include "nouveau_gem.h"
  36 #include "nouveau_mem.h"
  37 #include "nouveau_vmm.h"
  38
  39 #include <nvif/class.h>
  40 #include <nvif/push206e.h>
  41
  42 void
  43 nouveau_gem_object_del(struct drm_gem_object *gem)
  44 {
  45         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  46         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  47         struct device *dev = drm->dev->dev;
  48         int ret;
  49
  50         ret = pm_runtime_get_sync(dev);
  51         if (WARN_ON(ret < 0 && ret != -EACCES)) {
  52                 pm_runtime_put_autosuspend(dev);
  53                 return;
  54         }
  55
  56         if (gem->import_attach)
  57                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  58
  59         ttm_bo_put(&nvbo->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_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
  73         struct nouveau_vma *vma;
  74         int ret;
  75
  76         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
  77                 return 0;
  78
  79         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
  80         if (ret)
  81                 return ret;
  82
  83         ret = pm_runtime_get_sync(dev);
  84         if (ret < 0 && ret != -EACCES) {
  85                 pm_runtime_put_autosuspend(dev);
  86                 goto out;
  87         }
  88
  89         ret = nouveau_vma_new(nvbo, vmm, &vma);
  90         pm_runtime_mark_last_busy(dev);
  91         pm_runtime_put_autosuspend(dev);
  92 out:
  93         ttm_bo_unreserve(&nvbo->bo);
  94         return ret;
  95 }
  96
  97 struct nouveau_gem_object_unmap {
  98         struct nouveau_cli_work work;
  99         struct nouveau_vma *vma;
 100 };
 101
 102 static void
 103 nouveau_gem_object_delete(struct nouveau_vma *vma)
 104 {
 105         nouveau_fence_unref(&vma->fence);
 106         nouveau_vma_del(&vma);
 107 }
 108
 109 static void
 110 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 111 {
 112         struct nouveau_gem_object_unmap *work =
 113                 container_of(w, typeof(*work), work);
 114         nouveau_gem_object_delete(work->vma);
 115         kfree(work);
 116 }
 117
 118 static void
 119 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 120 {
 121         struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 122         struct nouveau_gem_object_unmap *work;
 123
 124         list_del_init(&vma->head);
 125
 126         if (!fence) {
 127                 nouveau_gem_object_delete(vma);
 128                 return;
 129         }
 130
 131         if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 132                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 133                 nouveau_gem_object_delete(vma);
 134                 return;
 135         }
 136
 137         work->work.func = nouveau_gem_object_delete_work;
 138         work->vma = vma;
 139         nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 140 }
 141
 142 void
 143 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 144 {
 145         struct nouveau_cli *cli = nouveau_cli(file_priv);
 146         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 147         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 148         struct device *dev = drm->dev->dev;
 149         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
 150         struct nouveau_vma *vma;
 151         int ret;
 152
 153         if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 154                 return;
 155
 156         ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 157         if (ret)
 158                 return;
 159
 160         vma = nouveau_vma_find(nvbo, vmm);
 161         if (vma) {
 162                 if (--vma->refs == 0) {
 163                         ret = pm_runtime_get_sync(dev);
 164                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 165                                 nouveau_gem_object_unmap(nvbo, vma);
 166                                 pm_runtime_mark_last_busy(dev);
 167                         }
 168                         pm_runtime_put_autosuspend(dev);
 169                 }
 170         }
 171         ttm_bo_unreserve(&nvbo->bo);
 172 }
 173
 174 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
 175         .free = nouveau_gem_object_del,
 176         .open = nouveau_gem_object_open,
 177         .close = nouveau_gem_object_close,
 178         .pin = nouveau_gem_prime_pin,
 179         .unpin = nouveau_gem_prime_unpin,
 180         .get_sg_table = nouveau_gem_prime_get_sg_table,
 181         .vmap = drm_gem_ttm_vmap,
 182         .vunmap = drm_gem_ttm_vunmap,
 183 };
 184
 185 int
 186 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 187                 uint32_t tile_mode, uint32_t tile_flags,
 188                 struct nouveau_bo **pnvbo)
 189 {
 190         struct nouveau_drm *drm = cli->drm;
 191         struct nouveau_bo *nvbo;
 192         int ret;
 193
 194         if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 195                 domain |= NOUVEAU_GEM_DOMAIN_CPU;
 196
 197         nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 198                                 tile_flags);
 199         if (IS_ERR(nvbo))
 200                 return PTR_ERR(nvbo);
 201
 202         nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
 203
 204         /* Initialize the embedded gem-object. We return a single gem-reference
 205          * to the caller, instead of a normal nouveau_bo ttm reference. */
 206         ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 207         if (ret) {
 208                 drm_gem_object_release(&nvbo->bo.base);
 209                 kfree(nvbo);
 210                 return ret;
 211         }
 212
 213         ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
 214         if (ret) {
 215                 nouveau_bo_ref(NULL, &nvbo);
 216                 return ret;
 217         }
 218
 219         /* we restrict allowed domains on nv50+ to only the types
 220          * that were requested at creation time.  not possibly on
 221          * earlier chips without busting the ABI.
 222          */
 223         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 224                               NOUVEAU_GEM_DOMAIN_GART;
 225         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 226                 nvbo->valid_domains &= domain;
 227
 228         *pnvbo = nvbo;
 229         return 0;
 230 }
 231
 232 static int
 233 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 234                  struct drm_nouveau_gem_info *rep)
 235 {
 236         struct nouveau_cli *cli = nouveau_cli(file_priv);
 237         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 238         struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
 239         struct nouveau_vma *vma;
 240
 241         if (is_power_of_2(nvbo->valid_domains))
 242                 rep->domain = nvbo->valid_domains;
 243         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 244                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 245         else
 246                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 247         rep->offset = nvbo->offset;
 248         if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 249                 vma = nouveau_vma_find(nvbo, vmm);
 250                 if (!vma)
 251                         return -EINVAL;
 252
 253                 rep->offset = vma->addr;
 254         }
 255
 256         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 257         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 258         rep->tile_mode = nvbo->mode;
 259         rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 260         if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 261                 rep->tile_flags |= nvbo->kind << 8;
 262         else
 263         if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 264                 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 265         else
 266                 rep->tile_flags |= nvbo->zeta;
 267         return 0;
 268 }
 269
 270 int
 271 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 272                       struct drm_file *file_priv)
 273 {
 274         struct nouveau_cli *cli = nouveau_cli(file_priv);
 275         struct drm_nouveau_gem_new *req = data;
 276         struct nouveau_bo *nvbo = NULL;
 277         int ret = 0;
 278
 279         ret = nouveau_gem_new(cli, req->info.size, req->align,
 280                               req->info.domain, req->info.tile_mode,
 281                               req->info.tile_flags, &nvbo);
 282         if (ret)
 283                 return ret;
 284
 285         ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 286                                     &req->info.handle);
 287         if (ret == 0) {
 288                 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 289                 if (ret)
 290                         drm_gem_handle_delete(file_priv, req->info.handle);
 291         }
 292
 293         /* drop reference from allocate - handle holds it now */
 294         drm_gem_object_put(&nvbo->bo.base);
 295         return ret;
 296 }
 297
 298 static int
 299 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 300                        uint32_t write_domains, uint32_t valid_domains)
 301 {
 302         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 303         struct ttm_buffer_object *bo = &nvbo->bo;
 304         uint32_t domains = valid_domains & nvbo->valid_domains &
 305                 (write_domains ? write_domains : read_domains);
 306         uint32_t pref_domains = 0;;
 307
 308         if (!domains)
 309                 return -EINVAL;
 310
 311         valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 312
 313         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 314             bo->mem.mem_type == TTM_PL_VRAM)
 315                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 316
 317         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 318                  bo->mem.mem_type == TTM_PL_TT)
 319                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 320
 321         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 322                 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 323
 324         else
 325                 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 326
 327         nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 328
 329         return 0;
 330 }
 331
 332 struct validate_op {
 333         struct list_head list;
 334         struct ww_acquire_ctx ticket;
 335 };
 336
 337 static void
 338 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 339                         struct nouveau_fence *fence,
 340                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 341 {
 342         struct nouveau_bo *nvbo;
 343         struct drm_nouveau_gem_pushbuf_bo *b;
 344
 345         while (!list_empty(&op->list)) {
 346                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 347                 b = &pbbo[nvbo->pbbo_index];
 348
 349                 if (likely(fence)) {
 350                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 351
 352                         if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 353                                 struct nouveau_vma *vma =
 354                                         (void *)(unsigned long)b->user_priv;
 355                                 nouveau_fence_unref(&vma->fence);
 356                                 dma_fence_get(&fence->base);
 357                                 vma->fence = fence;
 358                         }
 359                 }
 360
 361                 if (unlikely(nvbo->validate_mapped)) {
 362                         ttm_bo_kunmap(&nvbo->kmap);
 363                         nvbo->validate_mapped = false;
 364                 }
 365
 366                 list_del(&nvbo->entry);
 367                 nvbo->reserved_by = NULL;
 368                 ttm_bo_unreserve(&nvbo->bo);
 369                 drm_gem_object_put(&nvbo->bo.base);
 370         }
 371 }
 372
 373 static void
 374 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 375               struct nouveau_fence *fence,
 376               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 377 {
 378         validate_fini_no_ticket(op, chan, fence, pbbo);
 379         ww_acquire_fini(&op->ticket);
 380 }
 381
 382 static int
 383 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 384               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 385               int nr_buffers, struct validate_op *op)
 386 {
 387         struct nouveau_cli *cli = nouveau_cli(file_priv);
 388         int trycnt = 0;
 389         int ret = -EINVAL, i;
 390         struct nouveau_bo *res_bo = NULL;
 391         LIST_HEAD(gart_list);
 392         LIST_HEAD(vram_list);
 393         LIST_HEAD(both_list);
 394
 395         ww_acquire_init(&op->ticket, &reservation_ww_class);
 396 retry:
 397         if (++trycnt > 100000) {
 398                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 399                 return -EINVAL;
 400         }
 401
 402         for (i = 0; i < nr_buffers; i++) {
 403                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 404                 struct drm_gem_object *gem;
 405                 struct nouveau_bo *nvbo;
 406
 407                 gem = drm_gem_object_lookup(file_priv, b->handle);
 408                 if (!gem) {
 409                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 410                         ret = -ENOENT;
 411                         break;
 412                 }
 413                 nvbo = nouveau_gem_object(gem);
 414                 if (nvbo == res_bo) {
 415                         res_bo = NULL;
 416                         drm_gem_object_put(gem);
 417                         continue;
 418                 }
 419
 420                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 421                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 422                                       "validation list\n", b->handle);
 423                         drm_gem_object_put(gem);
 424                         ret = -EINVAL;
 425                         break;
 426                 }
 427
 428                 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 429                 if (ret) {
 430                         list_splice_tail_init(&vram_list, &op->list);
 431                         list_splice_tail_init(&gart_list, &op->list);
 432                         list_splice_tail_init(&both_list, &op->list);
 433                         validate_fini_no_ticket(op, chan, NULL, NULL);
 434                         if (unlikely(ret == -EDEADLK)) {
 435                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 436                                                               &op->ticket);
 437                                 if (!ret)
 438                                         res_bo = nvbo;
 439                         }
 440                         if (unlikely(ret)) {
 441                                 if (ret != -ERESTARTSYS)
 442                                         NV_PRINTK(err, cli, "fail reserve\n");
 443                                 break;
 444                         }
 445                 }
 446
 447                 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 448                         struct nouveau_vmm *vmm = chan->vmm;
 449                         struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 450                         if (!vma) {
 451                                 NV_PRINTK(err, cli, "vma not found!\n");
 452                                 ret = -EINVAL;
 453                                 break;
 454                         }
 455
 456                         b->user_priv = (uint64_t)(unsigned long)vma;
 457                 } else {
 458                         b->user_priv = (uint64_t)(unsigned long)nvbo;
 459                 }
 460
 461                 nvbo->reserved_by = file_priv;
 462                 nvbo->pbbo_index = i;
 463                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 464                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 465                         list_add_tail(&nvbo->entry, &both_list);
 466                 else
 467                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 468                         list_add_tail(&nvbo->entry, &vram_list);
 469                 else
 470                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 471                         list_add_tail(&nvbo->entry, &gart_list);
 472                 else {
 473                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 474                                  b->valid_domains);
 475                         list_add_tail(&nvbo->entry, &both_list);
 476                         ret = -EINVAL;
 477                         break;
 478                 }
 479                 if (nvbo == res_bo)
 480                         goto retry;
 481         }
 482
 483         ww_acquire_done(&op->ticket);
 484         list_splice_tail(&vram_list, &op->list);
 485         list_splice_tail(&gart_list, &op->list);
 486         list_splice_tail(&both_list, &op->list);
 487         if (ret)
 488                 validate_fini(op, chan, NULL, NULL);
 489         return ret;
 490
 491 }
 492
 493 static int
 494 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 495               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 496 {
 497         struct nouveau_drm *drm = chan->drm;
 498         struct nouveau_bo *nvbo;
 499         int ret, relocs = 0;
 500
 501         list_for_each_entry(nvbo, list, entry) {
 502                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 503
 504                 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 505                                              b->write_domains,
 506                                              b->valid_domains);
 507                 if (unlikely(ret)) {
 508                         NV_PRINTK(err, cli, "fail set_domain\n");
 509                         return ret;
 510                 }
 511
 512                 ret = nouveau_bo_validate(nvbo, true, false);
 513                 if (unlikely(ret)) {
 514                         if (ret != -ERESTARTSYS)
 515                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 516                         return ret;
 517                 }
 518
 519                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 520                 if (unlikely(ret)) {
 521                         if (ret != -ERESTARTSYS)
 522                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 523                         return ret;
 524                 }
 525
 526                 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 527                         if (nvbo->offset == b->presumed.offset &&
 528                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 529                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 530                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 531                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 532                                 continue;
 533
 534                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 535                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 536                         else
 537                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 538                         b->presumed.offset = nvbo->offset;
 539                         b->presumed.valid = 0;
 540                         relocs++;
 541                 }
 542         }
 543
 544         return relocs;
 545 }
 546
 547 static int
 548 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 549                              struct drm_file *file_priv,
 550                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 551                              int nr_buffers,
 552                              struct validate_op *op, bool *apply_relocs)
 553 {
 554         struct nouveau_cli *cli = nouveau_cli(file_priv);
 555         int ret;
 556
 557         INIT_LIST_HEAD(&op->list);
 558
 559         if (nr_buffers == 0)
 560                 return 0;
 561
 562         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 563         if (unlikely(ret)) {
 564                 if (ret != -ERESTARTSYS)
 565                         NV_PRINTK(err, cli, "validate_init\n");
 566                 return ret;
 567         }
 568
 569         ret = validate_list(chan, cli, &op->list, pbbo);
 570         if (unlikely(ret < 0)) {
 571                 if (ret != -ERESTARTSYS)
 572                         NV_PRINTK(err, cli, "validating bo list\n");
 573                 validate_fini(op, chan, NULL, NULL);
 574                 return ret;
 575         } else if (ret > 0) {
 576                 *apply_relocs = true;
 577         }
 578
 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_reloc *reloc,
 612                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 613 {
 614         int ret = 0;
 615         unsigned i;
 616
 617         for (i = 0; i < req->nr_relocs; i++) {
 618                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 619                 struct drm_nouveau_gem_pushbuf_bo *b;
 620                 struct nouveau_bo *nvbo;
 621                 uint32_t data;
 622
 623                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 624                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 625                         ret = -EINVAL;
 626                         break;
 627                 }
 628
 629                 b = &bo[r->bo_index];
 630                 if (b->presumed.valid)
 631                         continue;
 632
 633                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 634                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 635                         ret = -EINVAL;
 636                         break;
 637                 }
 638                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 639
 640                 if (unlikely(r->reloc_bo_offset + 4 >
 641                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 642                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 643                         ret = -EINVAL;
 644                         break;
 645                 }
 646
 647                 if (!nvbo->kmap.virtual) {
 648                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 649                                           &nvbo->kmap);
 650                         if (ret) {
 651                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 652                                 break;
 653                         }
 654                         nvbo->validate_mapped = true;
 655                 }
 656
 657                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 658                         data = b->presumed.offset + r->data;
 659                 else
 660                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 661                         data = (b->presumed.offset + r->data) >> 32;
 662                 else
 663                         data = r->data;
 664
 665                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 666                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 667                                 data |= r->tor;
 668                         else
 669                                 data |= r->vor;
 670                 }
 671
 672                 ret = ttm_bo_wait(&nvbo->bo, false, false);
 673                 if (ret) {
 674                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 675                         break;
 676                 }
 677
 678                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 679         }
 680
 681         return ret;
 682 }
 683
 684 int
 685 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 686                           struct drm_file *file_priv)
 687 {
 688         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 689         struct nouveau_cli *cli = nouveau_cli(file_priv);
 690         struct nouveau_abi16_chan *temp;
 691         struct nouveau_drm *drm = nouveau_drm(dev);
 692         struct drm_nouveau_gem_pushbuf *req = data;
 693         struct drm_nouveau_gem_pushbuf_push *push;
 694         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 695         struct drm_nouveau_gem_pushbuf_bo *bo;
 696         struct nouveau_channel *chan = NULL;
 697         struct validate_op op;
 698         struct nouveau_fence *fence = NULL;
 699         int i, j, ret = 0;
 700         bool do_reloc = false, sync = false;
 701
 702         if (unlikely(!abi16))
 703                 return -ENOMEM;
 704
 705         list_for_each_entry(temp, &abi16->channels, head) {
 706                 if (temp->chan->chid == req->channel) {
 707                         chan = temp->chan;
 708                         break;
 709                 }
 710         }
 711
 712         if (!chan)
 713                 return nouveau_abi16_put(abi16, -ENOENT);
 714         if (unlikely(atomic_read(&chan->killed)))
 715                 return nouveau_abi16_put(abi16, -ENODEV);
 716
 717         sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 718
 719         req->vram_available = drm->gem.vram_available;
 720         req->gart_available = drm->gem.gart_available;
 721         if (unlikely(req->nr_push == 0))
 722                 goto out_next;
 723
 724         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 725                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 726                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 727                 return nouveau_abi16_put(abi16, -EINVAL);
 728         }
 729
 730         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 731                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 732                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 733                 return nouveau_abi16_put(abi16, -EINVAL);
 734         }
 735
 736         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 737                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 738                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 739                 return nouveau_abi16_put(abi16, -EINVAL);
 740         }
 741
 742         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 743         if (IS_ERR(push))
 744                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 745
 746         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 747         if (IS_ERR(bo)) {
 748                 u_free(push);
 749                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 750         }
 751
 752         /* Ensure all push buffers are on validate list */
 753         for (i = 0; i < req->nr_push; i++) {
 754                 if (push[i].bo_index >= req->nr_buffers) {
 755                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 756                         ret = -EINVAL;
 757                         goto out_prevalid;
 758                 }
 759         }
 760
 761         /* Validate buffer list */
 762 revalidate:
 763         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 764                                            req->nr_buffers, &op, &do_reloc);
 765         if (ret) {
 766                 if (ret != -ERESTARTSYS)
 767                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 768                 goto out_prevalid;
 769         }
 770
 771         /* Apply any relocations that are required */
 772         if (do_reloc) {
 773                 if (!reloc) {
 774                         validate_fini(&op, chan, NULL, bo);
 775                         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 776                         if (IS_ERR(reloc)) {
 777                                 ret = PTR_ERR(reloc);
 778                                 goto out_prevalid;
 779                         }
 780
 781                         goto revalidate;
 782                 }
 783
 784                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 785                 if (ret) {
 786                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 787                         goto out;
 788                 }
 789         }
 790
 791         if (chan->dma.ib_max) {
 792                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 793                 if (ret) {
 794                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 795                         goto out;
 796                 }
 797
 798                 for (i = 0; i < req->nr_push; i++) {
 799                         struct nouveau_vma *vma = (void *)(unsigned long)
 800                                 bo[push[i].bo_index].user_priv;
 801
 802                         nv50_dma_push(chan, vma->addr + push[i].offset,
 803                                       push[i].length);
 804                 }
 805         } else
 806         if (drm->client.device.info.chipset >= 0x25) {
 807                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
 808                 if (ret) {
 809                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 810                         goto out;
 811                 }
 812
 813                 for (i = 0; i < req->nr_push; i++) {
 814                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 815                                 bo[push[i].bo_index].user_priv;
 816
 817                         PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
 818                         PUSH_DATA(chan->chan.push, 0);
 819                 }
 820         } else {
 821                 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 822                 if (ret) {
 823                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 824                         goto out;
 825                 }
 826
 827                 for (i = 0; i < req->nr_push; i++) {
 828                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 829                                 bo[push[i].bo_index].user_priv;
 830                         uint32_t cmd;
 831
 832                         cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 833                         cmd |= 0x20000000;
 834                         if (unlikely(cmd != req->suffix0)) {
 835                                 if (!nvbo->kmap.virtual) {
 836                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 837                                                           nvbo->bo.mem.
 838                                                           num_pages,
 839                                                           &nvbo->kmap);
 840                                         if (ret) {
 841                                                 WIND_RING(chan);
 842                                                 goto out;
 843                                         }
 844                                         nvbo->validate_mapped = true;
 845                                 }
 846
 847                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 848                                                 push[i].length - 8) / 4, cmd);
 849                         }
 850
 851                         PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
 852                         PUSH_DATA(chan->chan.push, 0);
 853                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 854                                 PUSH_DATA(chan->chan.push, 0);
 855                 }
 856         }
 857
 858         ret = nouveau_fence_new(chan, false, &fence);
 859         if (ret) {
 860                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 861                 WIND_RING(chan);
 862                 goto out;
 863         }
 864
 865         if (sync) {
 866                 if (!(ret = nouveau_fence_wait(fence, false, false))) {
 867                         if ((ret = dma_fence_get_status(&fence->base)) == 1)
 868                                 ret = 0;
 869                 }
 870         }
 871
 872 out:
 873         validate_fini(&op, chan, fence, bo);
 874         nouveau_fence_unref(&fence);
 875
 876         if (do_reloc) {
 877                 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 878                         u64_to_user_ptr(req->buffers);
 879
 880                 for (i = 0; i < req->nr_buffers; i++) {
 881                         if (bo[i].presumed.valid)
 882                                 continue;
 883
 884                         if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 885                                          sizeof(bo[i].presumed))) {
 886                                 ret = -EFAULT;
 887                                 break;
 888                         }
 889                 }
 890         }
 891 out_prevalid:
 892         if (!IS_ERR(reloc))
 893                 u_free(reloc);
 894         u_free(bo);
 895         u_free(push);
 896
 897 out_next:
 898         if (chan->dma.ib_max) {
 899                 req->suffix0 = 0x00000000;
 900                 req->suffix1 = 0x00000000;
 901         } else
 902         if (drm->client.device.info.chipset >= 0x25) {
 903                 req->suffix0 = 0x00020000;
 904                 req->suffix1 = 0x00000000;
 905         } else {
 906                 req->suffix0 = 0x20000000 |
 907                               (chan->push.addr + ((chan->dma.cur + 2) << 2));
 908                 req->suffix1 = 0x00000000;
 909         }
 910
 911         return nouveau_abi16_put(abi16, ret);
 912 }
 913
 914 int
 915 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 916                            struct drm_file *file_priv)
 917 {
 918         struct drm_nouveau_gem_cpu_prep *req = data;
 919         struct drm_gem_object *gem;
 920         struct nouveau_bo *nvbo;
 921         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 922         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 923         long lret;
 924         int ret;
 925
 926         gem = drm_gem_object_lookup(file_priv, req->handle);
 927         if (!gem)
 928                 return -ENOENT;
 929         nvbo = nouveau_gem_object(gem);
 930
 931         lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
 932                                                    no_wait ? 0 : 30 * HZ);
 933         if (!lret)
 934                 ret = -EBUSY;
 935         else if (lret > 0)
 936                 ret = 0;
 937         else
 938                 ret = lret;
 939
 940         nouveau_bo_sync_for_cpu(nvbo);
 941         drm_gem_object_put(gem);
 942
 943         return ret;
 944 }
 945
 946 int
 947 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 948                            struct drm_file *file_priv)
 949 {
 950         struct drm_nouveau_gem_cpu_fini *req = data;
 951         struct drm_gem_object *gem;
 952         struct nouveau_bo *nvbo;
 953
 954         gem = drm_gem_object_lookup(file_priv, req->handle);
 955         if (!gem)
 956                 return -ENOENT;
 957         nvbo = nouveau_gem_object(gem);
 958
 959         nouveau_bo_sync_for_device(nvbo);
 960         drm_gem_object_put(gem);
 961         return 0;
 962 }
 963
 964 int
 965 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 966                        struct drm_file *file_priv)
 967 {
 968         struct drm_nouveau_gem_info *req = data;
 969         struct drm_gem_object *gem;
 970         int ret;
 971
 972         gem = drm_gem_object_lookup(file_priv, req->handle);
 973         if (!gem)
 974                 return -ENOENT;
 975
 976         ret = nouveau_gem_info(file_priv, gem, req);
 977         drm_gem_object_put(gem);
 978         return ret;
 979 }
 980