drivers/gpu/drm/nouveau/nouveau_abi16.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include <nvif/client.h>
  25 #include <nvif/driver.h>
  26 #include <nvif/fifo.h>
  27 #include <nvif/ioctl.h>
  28 #include <nvif/class.h>
  29 #include <nvif/cl0002.h>
  30 #include <nvif/cla06f.h>
  31 #include <nvif/unpack.h>
  32
  33 #include "nouveau_drv.h"
  34 #include "nouveau_dma.h"
  35 #include "nouveau_gem.h"
  36 #include "nouveau_chan.h"
  37 #include "nouveau_abi16.h"
  38 #include "nouveau_vmm.h"
  39
  40 static struct nouveau_abi16 *
  41 nouveau_abi16(struct drm_file *file_priv)
  42 {
  43         struct nouveau_cli *cli = nouveau_cli(file_priv);
  44         if (!cli->abi16) {
  45                 struct nouveau_abi16 *abi16;
  46                 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  47                 if (cli->abi16) {
  48                         struct nv_device_v0 args = {
  49                                 .device = ~0ULL,
  50                         };
  51
  52                         INIT_LIST_HEAD(&abi16->channels);
  53
  54                         /* allocate device object targeting client's default
  55                          * device (ie. the one that belongs to the fd it
  56                          * opened)
  57                          */
  58                         if (nvif_device_init(&cli->base.object, 0, NV_DEVICE,
  59                                              &args, sizeof(args),
  60                                              &abi16->device) == 0)
  61                                 return cli->abi16;
  62
  63                         kfree(cli->abi16);
  64                         cli->abi16 = NULL;
  65                 }
  66         }
  67         return cli->abi16;
  68 }
  69
  70 struct nouveau_abi16 *
  71 nouveau_abi16_get(struct drm_file *file_priv)
  72 {
  73         struct nouveau_cli *cli = nouveau_cli(file_priv);
  74         mutex_lock(&cli->mutex);
  75         if (nouveau_abi16(file_priv))
  76                 return cli->abi16;
  77         mutex_unlock(&cli->mutex);
  78         return NULL;
  79 }
  80
  81 int
  82 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  83 {
  84         struct nouveau_cli *cli = (void *)abi16->device.object.client;
  85         mutex_unlock(&cli->mutex);
  86         return ret;
  87 }
  88
  89 s32
  90 nouveau_abi16_swclass(struct nouveau_drm *drm)
  91 {
  92         switch (drm->client.device.info.family) {
  93         case NV_DEVICE_INFO_V0_TNT:
  94                 return NVIF_CLASS_SW_NV04;
  95         case NV_DEVICE_INFO_V0_CELSIUS:
  96         case NV_DEVICE_INFO_V0_KELVIN:
  97         case NV_DEVICE_INFO_V0_RANKINE:
  98         case NV_DEVICE_INFO_V0_CURIE:
  99                 return NVIF_CLASS_SW_NV10;
 100         case NV_DEVICE_INFO_V0_TESLA:
 101                 return NVIF_CLASS_SW_NV50;
 102         case NV_DEVICE_INFO_V0_FERMI:
 103         case NV_DEVICE_INFO_V0_KEPLER:
 104         case NV_DEVICE_INFO_V0_MAXWELL:
 105         case NV_DEVICE_INFO_V0_PASCAL:
 106                 return NVIF_CLASS_SW_GF100;
 107         }
 108
 109         return 0x0000;
 110 }
 111
 112 static void
 113 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 114                         struct nouveau_abi16_ntfy *ntfy)
 115 {
 116         nvif_object_fini(&ntfy->object);
 117         nvkm_mm_free(&chan->heap, &ntfy->node);
 118         list_del(&ntfy->head);
 119         kfree(ntfy);
 120 }
 121
 122 static void
 123 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 124                         struct nouveau_abi16_chan *chan)
 125 {
 126         struct nouveau_abi16_ntfy *ntfy, *temp;
 127
 128         /* wait for all activity to stop before releasing notify object, which
 129          * may be still in use */
 130         if (chan->chan && chan->ntfy)
 131                 nouveau_channel_idle(chan->chan);
 132
 133         /* cleanup notifier state */
 134         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 135                 nouveau_abi16_ntfy_fini(chan, ntfy);
 136         }
 137
 138         if (chan->ntfy) {
 139                 nouveau_vma_del(&chan->ntfy_vma);
 140                 nouveau_bo_unpin(chan->ntfy);
 141                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 142         }
 143
 144         if (chan->heap.block_size)
 145                 nvkm_mm_fini(&chan->heap);
 146
 147         /* destroy channel object, all children will be killed too */
 148         if (chan->chan) {
 149                 nouveau_channel_idle(chan->chan);
 150                 nouveau_channel_del(&chan->chan);
 151         }
 152
 153         list_del(&chan->head);
 154         kfree(chan);
 155 }
 156
 157 void
 158 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 159 {
 160         struct nouveau_cli *cli = (void *)abi16->device.object.client;
 161         struct nouveau_abi16_chan *chan, *temp;
 162
 163         /* cleanup channels */
 164         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 165                 nouveau_abi16_chan_fini(abi16, chan);
 166         }
 167
 168         /* destroy the device object */
 169         nvif_device_fini(&abi16->device);
 170
 171         kfree(cli->abi16);
 172         cli->abi16 = NULL;
 173 }
 174
 175 int
 176 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 177 {
 178         struct nouveau_cli *cli = nouveau_cli(file_priv);
 179         struct nouveau_drm *drm = nouveau_drm(dev);
 180         struct nvif_device *device = &drm->client.device;
 181         struct nvkm_gr *gr = nvxx_gr(device);
 182         struct drm_nouveau_getparam *getparam = data;
 183
 184         switch (getparam->param) {
 185         case NOUVEAU_GETPARAM_CHIPSET_ID:
 186                 getparam->value = device->info.chipset;
 187                 break;
 188         case NOUVEAU_GETPARAM_PCI_VENDOR:
 189                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 190                         getparam->value = dev->pdev->vendor;
 191                 else
 192                         getparam->value = 0;
 193                 break;
 194         case NOUVEAU_GETPARAM_PCI_DEVICE:
 195                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 196                         getparam->value = dev->pdev->device;
 197                 else
 198                         getparam->value = 0;
 199                 break;
 200         case NOUVEAU_GETPARAM_BUS_TYPE:
 201                 switch (device->info.platform) {
 202                 case NV_DEVICE_INFO_V0_AGP : getparam->value = 0; break;
 203                 case NV_DEVICE_INFO_V0_PCI : getparam->value = 1; break;
 204                 case NV_DEVICE_INFO_V0_PCIE: getparam->value = 2; break;
 205                 case NV_DEVICE_INFO_V0_SOC : getparam->value = 3; break;
 206                 case NV_DEVICE_INFO_V0_IGP :
 207                         if (!pci_is_pcie(dev->pdev))
 208                                 getparam->value = 1;
 209                         else
 210                                 getparam->value = 2;
 211                         break;
 212                 default:
 213                         WARN_ON(1);
 214                         break;
 215                 }
 216         case NOUVEAU_GETPARAM_FB_SIZE:
 217                 getparam->value = drm->gem.vram_available;
 218                 break;
 219         case NOUVEAU_GETPARAM_AGP_SIZE:
 220                 getparam->value = drm->gem.gart_available;
 221                 break;
 222         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 223                 getparam->value = 0; /* deprecated */
 224                 break;
 225         case NOUVEAU_GETPARAM_PTIMER_TIME:
 226                 getparam->value = nvif_device_time(device);
 227                 break;
 228         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 229                 getparam->value = 1;
 230                 break;
 231         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 232                 getparam->value = 1;
 233                 break;
 234         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 235                 getparam->value = nvkm_gr_units(gr);
 236                 break;
 237         default:
 238                 NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
 239                 return -EINVAL;
 240         }
 241
 242         return 0;
 243 }
 244
 245 int
 246 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 247 {
 248         return -EINVAL;
 249 }
 250
 251 int
 252 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 253 {
 254         struct drm_nouveau_channel_alloc *init = data;
 255         struct nouveau_cli *cli = nouveau_cli(file_priv);
 256         struct nouveau_drm *drm = nouveau_drm(dev);
 257         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 258         struct nouveau_abi16_chan *chan;
 259         struct nvif_device *device;
 260         u64 engine;
 261         int ret;
 262
 263         if (unlikely(!abi16))
 264                 return -ENOMEM;
 265
 266         if (!drm->channel)
 267                 return nouveau_abi16_put(abi16, -ENODEV);
 268
 269         device = &abi16->device;
 270
 271         /* hack to allow channel engine type specification on kepler */
 272         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 273                 if (init->fb_ctxdma_handle == ~0) {
 274                         switch (init->tt_ctxdma_handle) {
 275                         case 0x01: engine = NV_DEVICE_INFO_ENGINE_GR    ; break;
 276                         case 0x02: engine = NV_DEVICE_INFO_ENGINE_MSPDEC; break;
 277                         case 0x04: engine = NV_DEVICE_INFO_ENGINE_MSPPP ; break;
 278                         case 0x08: engine = NV_DEVICE_INFO_ENGINE_MSVLD ; break;
 279                         case 0x30: engine = NV_DEVICE_INFO_ENGINE_CE    ; break;
 280                         default:
 281                                 return nouveau_abi16_put(abi16, -ENOSYS);
 282                         }
 283                 } else {
 284                         engine = NV_DEVICE_INFO_ENGINE_GR;
 285                 }
 286
 287                 if (engine != NV_DEVICE_INFO_ENGINE_CE)
 288                         engine = nvif_fifo_runlist(device, engine);
 289                 else
 290                         engine = nvif_fifo_runlist_ce(device);
 291                 init->fb_ctxdma_handle = engine;
 292                 init->tt_ctxdma_handle = 0;
 293         }
 294
 295         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 296                 return nouveau_abi16_put(abi16, -EINVAL);
 297
 298         /* allocate "abi16 channel" data and make up a handle for it */
 299         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 300         if (!chan)
 301                 return nouveau_abi16_put(abi16, -ENOMEM);
 302
 303         INIT_LIST_HEAD(&chan->notifiers);
 304         list_add(&chan->head, &abi16->channels);
 305
 306         /* create channel object and initialise dma and fence management */
 307         ret = nouveau_channel_new(drm, device, init->fb_ctxdma_handle,
 308                                   init->tt_ctxdma_handle, &chan->chan);
 309         if (ret)
 310                 goto done;
 311
 312         init->channel = chan->chan->chid;
 313
 314         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
 315                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 316                                         NOUVEAU_GEM_DOMAIN_GART;
 317         else
 318         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 319                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 320         else
 321                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 322
 323         if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 324                 init->subchan[0].handle = 0x00000000;
 325                 init->subchan[0].grclass = 0x0000;
 326                 init->subchan[1].handle = chan->chan->nvsw.handle;
 327                 init->subchan[1].grclass = 0x506e;
 328                 init->nr_subchan = 2;
 329         }
 330
 331         /* Named memory object area */
 332         ret = nouveau_gem_new(cli, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 333                               0, 0, &chan->ntfy);
 334         if (ret == 0)
 335                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT, false);
 336         if (ret)
 337                 goto done;
 338
 339         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 340                 ret = nouveau_vma_new(chan->ntfy, &cli->vmm, &chan->ntfy_vma);
 341                 if (ret)
 342                         goto done;
 343         }
 344
 345         ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 346                                     &init->notifier_handle);
 347         if (ret)
 348                 goto done;
 349
 350         ret = nvkm_mm_init(&chan->heap, 0, 0, PAGE_SIZE, 1);
 351 done:
 352         if (ret)
 353                 nouveau_abi16_chan_fini(abi16, chan);
 354         return nouveau_abi16_put(abi16, ret);
 355 }
 356
 357 static struct nouveau_abi16_chan *
 358 nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
 359 {
 360         struct nouveau_abi16_chan *chan;
 361
 362         list_for_each_entry(chan, &abi16->channels, head) {
 363                 if (chan->chan->chid == channel)
 364                         return chan;
 365         }
 366
 367         return NULL;
 368 }
 369
 370 int
 371 nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
 372 {
 373         union {
 374                 struct nvif_ioctl_v0 v0;
 375         } *args = data;
 376         struct nouveau_abi16_chan *chan;
 377         struct nouveau_abi16 *abi16;
 378         int ret = -ENOSYS;
 379
 380         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 381                 switch (args->v0.type) {
 382                 case NVIF_IOCTL_V0_NEW:
 383                 case NVIF_IOCTL_V0_MTHD:
 384                 case NVIF_IOCTL_V0_SCLASS:
 385                         break;
 386                 default:
 387                         return -EACCES;
 388                 }
 389         } else
 390                 return ret;
 391
 392         if (!(abi16 = nouveau_abi16(file_priv)))
 393                 return -ENOMEM;
 394
 395         if (args->v0.token != ~0ULL) {
 396                 if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
 397                         return -EINVAL;
 398                 args->v0.object = nvif_handle(&chan->chan->user);
 399                 args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 400                 return 0;
 401         }
 402
 403         args->v0.object = nvif_handle(&abi16->device.object);
 404         args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 405         return 0;
 406 }
 407
 408 int
 409 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 410 {
 411         struct drm_nouveau_channel_free *req = data;
 412         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 413         struct nouveau_abi16_chan *chan;
 414
 415         if (unlikely(!abi16))
 416                 return -ENOMEM;
 417
 418         chan = nouveau_abi16_chan(abi16, req->channel);
 419         if (!chan)
 420                 return nouveau_abi16_put(abi16, -ENOENT);
 421         nouveau_abi16_chan_fini(abi16, chan);
 422         return nouveau_abi16_put(abi16, 0);
 423 }
 424
 425 int
 426 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 427 {
 428         struct drm_nouveau_grobj_alloc *init = data;
 429         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 430         struct nouveau_abi16_chan *chan;
 431         struct nouveau_abi16_ntfy *ntfy;
 432         struct nvif_client *client;
 433         struct nvif_sclass *sclass;
 434         s32 oclass = 0;
 435         int ret, i;
 436
 437         if (unlikely(!abi16))
 438                 return -ENOMEM;
 439
 440         if (init->handle == ~0)
 441                 return nouveau_abi16_put(abi16, -EINVAL);
 442         client = abi16->device.object.client;
 443
 444         chan = nouveau_abi16_chan(abi16, init->channel);
 445         if (!chan)
 446                 return nouveau_abi16_put(abi16, -ENOENT);
 447
 448         ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
 449         if (ret < 0)
 450                 return nouveau_abi16_put(abi16, ret);
 451
 452         if ((init->class & 0x00ff) == 0x006e) {
 453                 /* nvsw: compatibility with older 0x*6e class identifier */
 454                 for (i = 0; !oclass && i < ret; i++) {
 455                         switch (sclass[i].oclass) {
 456                         case NVIF_CLASS_SW_NV04:
 457                         case NVIF_CLASS_SW_NV10:
 458                         case NVIF_CLASS_SW_NV50:
 459                         case NVIF_CLASS_SW_GF100:
 460                                 oclass = sclass[i].oclass;
 461                                 break;
 462                         default:
 463                                 break;
 464                         }
 465                 }
 466         } else
 467         if ((init->class & 0x00ff) == 0x00b1) {
 468                 /* msvld: compatibility with incorrect version exposure */
 469                 for (i = 0; i < ret; i++) {
 470                         if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
 471                                 oclass = sclass[i].oclass;
 472                                 break;
 473                         }
 474                 }
 475         } else
 476         if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
 477                 /* mspdec: compatibility with incorrect version exposure */
 478                 for (i = 0; i < ret; i++) {
 479                         if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
 480                                 oclass = sclass[i].oclass;
 481                                 break;
 482                         }
 483                 }
 484         } else
 485         if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
 486                 /* msppp: compatibility with incorrect version exposure */
 487                 for (i = 0; i < ret; i++) {
 488                         if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
 489                                 oclass = sclass[i].oclass;
 490                                 break;
 491                         }
 492                 }
 493         } else {
 494                 oclass = init->class;
 495         }
 496
 497         nvif_object_sclass_put(&sclass);
 498         if (!oclass)
 499                 return nouveau_abi16_put(abi16, -EINVAL);
 500
 501         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 502         if (!ntfy)
 503                 return nouveau_abi16_put(abi16, -ENOMEM);
 504
 505         list_add(&ntfy->head, &chan->notifiers);
 506
 507         client->route = NVDRM_OBJECT_ABI16;
 508         ret = nvif_object_init(&chan->chan->user, init->handle, oclass,
 509                                NULL, 0, &ntfy->object);
 510         client->route = NVDRM_OBJECT_NVIF;
 511
 512         if (ret)
 513                 nouveau_abi16_ntfy_fini(chan, ntfy);
 514         return nouveau_abi16_put(abi16, ret);
 515 }
 516
 517 int
 518 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 519 {
 520         struct drm_nouveau_notifierobj_alloc *info = data;
 521         struct nouveau_drm *drm = nouveau_drm(dev);
 522         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 523         struct nouveau_abi16_chan *chan;
 524         struct nouveau_abi16_ntfy *ntfy;
 525         struct nvif_device *device = &abi16->device;
 526         struct nvif_client *client;
 527         struct nv_dma_v0 args = {};
 528         int ret;
 529
 530         if (unlikely(!abi16))
 531                 return -ENOMEM;
 532
 533         /* completely unnecessary for these chipsets... */
 534         if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 535                 return nouveau_abi16_put(abi16, -EINVAL);
 536         client = abi16->device.object.client;
 537
 538         chan = nouveau_abi16_chan(abi16, info->channel);
 539         if (!chan)
 540                 return nouveau_abi16_put(abi16, -ENOENT);
 541
 542         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 543         if (!ntfy)
 544                 return nouveau_abi16_put(abi16, -ENOMEM);
 545
 546         list_add(&ntfy->head, &chan->notifiers);
 547
 548         ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 549                            &ntfy->node);
 550         if (ret)
 551                 goto done;
 552
 553         args.start = ntfy->node->offset;
 554         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 555         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 556                 args.target = NV_DMA_V0_TARGET_VM;
 557                 args.access = NV_DMA_V0_ACCESS_VM;
 558                 args.start += chan->ntfy_vma->addr;
 559                 args.limit += chan->ntfy_vma->addr;
 560         } else
 561         if (drm->agp.bridge) {
 562                 args.target = NV_DMA_V0_TARGET_AGP;
 563                 args.access = NV_DMA_V0_ACCESS_RDWR;
 564                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 565                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 566         } else {
 567                 args.target = NV_DMA_V0_TARGET_VM;
 568                 args.access = NV_DMA_V0_ACCESS_RDWR;
 569                 args.start += chan->ntfy->bo.offset;
 570                 args.limit += chan->ntfy->bo.offset;
 571         }
 572
 573         client->route = NVDRM_OBJECT_ABI16;
 574         client->super = true;
 575         ret = nvif_object_init(&chan->chan->user, info->handle,
 576                                NV_DMA_IN_MEMORY, &args, sizeof(args),
 577                                &ntfy->object);
 578         client->super = false;
 579         client->route = NVDRM_OBJECT_NVIF;
 580         if (ret)
 581                 goto done;
 582
 583         info->offset = ntfy->node->offset;
 584 done:
 585         if (ret)
 586                 nouveau_abi16_ntfy_fini(chan, ntfy);
 587         return nouveau_abi16_put(abi16, ret);
 588 }
 589
 590 int
 591 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 592 {
 593         struct drm_nouveau_gpuobj_free *fini = data;
 594         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 595         struct nouveau_abi16_chan *chan;
 596         struct nouveau_abi16_ntfy *ntfy;
 597         int ret = -ENOENT;
 598
 599         if (unlikely(!abi16))
 600                 return -ENOMEM;
 601
 602         chan = nouveau_abi16_chan(abi16, fini->channel);
 603         if (!chan)
 604                 return nouveau_abi16_put(abi16, -EINVAL);
 605
 606         /* synchronize with the user channel and destroy the gpu object */
 607         nouveau_channel_idle(chan->chan);
 608
 609         list_for_each_entry(ntfy, &chan->notifiers, head) {
 610                 if (ntfy->object.handle == fini->handle) {
 611                         nouveau_abi16_ntfy_fini(chan, ntfy);
 612                         ret = 0;
 613                         break;
 614                 }
 615         }
 616
 617         return nouveau_abi16_put(abi16, ret);
 618 }