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_ctor(&cli->base.object, "abi16Device",
  59                                              0, NV_DEVICE, &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         case NV_DEVICE_INFO_V0_VOLTA:
 107                 return NVIF_CLASS_SW_GF100;
 108         }
 109
 110         return 0x0000;
 111 }
 112
 113 static void
 114 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 115                         struct nouveau_abi16_ntfy *ntfy)
 116 {
 117         nvif_object_dtor(&ntfy->object);
 118         nvkm_mm_free(&chan->heap, &ntfy->node);
 119         list_del(&ntfy->head);
 120         kfree(ntfy);
 121 }
 122
 123 static void
 124 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 125                         struct nouveau_abi16_chan *chan)
 126 {
 127         struct nouveau_abi16_ntfy *ntfy, *temp;
 128
 129         /* wait for all activity to stop before releasing notify object, which
 130          * may be still in use */
 131         if (chan->chan && chan->ntfy)
 132                 nouveau_channel_idle(chan->chan);
 133
 134         /* cleanup notifier state */
 135         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 136                 nouveau_abi16_ntfy_fini(chan, ntfy);
 137         }
 138
 139         if (chan->ntfy) {
 140                 nouveau_vma_del(&chan->ntfy_vma);
 141                 nouveau_bo_unpin(chan->ntfy);
 142                 drm_gem_object_put(&chan->ntfy->bo.base);
 143         }
 144
 145         if (chan->heap.block_size)
 146                 nvkm_mm_fini(&chan->heap);
 147
 148         /* destroy channel object, all children will be killed too */
 149         if (chan->chan) {
 150                 nouveau_channel_idle(chan->chan);
 151                 nouveau_channel_del(&chan->chan);
 152         }
 153
 154         list_del(&chan->head);
 155         kfree(chan);
 156 }
 157
 158 void
 159 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 160 {
 161         struct nouveau_cli *cli = (void *)abi16->device.object.client;
 162         struct nouveau_abi16_chan *chan, *temp;
 163
 164         /* cleanup channels */
 165         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 166                 nouveau_abi16_chan_fini(abi16, chan);
 167         }
 168
 169         /* destroy the device object */
 170         nvif_device_dtor(&abi16->device);
 171
 172         kfree(cli->abi16);
 173         cli->abi16 = NULL;
 174 }
 175
 176 int
 177 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 178 {
 179         struct nouveau_cli *cli = nouveau_cli(file_priv);
 180         struct nouveau_drm *drm = nouveau_drm(dev);
 181         struct nvif_device *device = &drm->client.device;
 182         struct nvkm_gr *gr = nvxx_gr(device);
 183         struct drm_nouveau_getparam *getparam = data;
 184         struct pci_dev *pdev = to_pci_dev(dev->dev);
 185
 186         switch (getparam->param) {
 187         case NOUVEAU_GETPARAM_CHIPSET_ID:
 188                 getparam->value = device->info.chipset;
 189                 break;
 190         case NOUVEAU_GETPARAM_PCI_VENDOR:
 191                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 192                         getparam->value = pdev->vendor;
 193                 else
 194                         getparam->value = 0;
 195                 break;
 196         case NOUVEAU_GETPARAM_PCI_DEVICE:
 197                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 198                         getparam->value = pdev->device;
 199                 else
 200                         getparam->value = 0;
 201                 break;
 202         case NOUVEAU_GETPARAM_BUS_TYPE:
 203                 switch (device->info.platform) {
 204                 case NV_DEVICE_INFO_V0_AGP : getparam->value = 0; break;
 205                 case NV_DEVICE_INFO_V0_PCI : getparam->value = 1; break;
 206                 case NV_DEVICE_INFO_V0_PCIE: getparam->value = 2; break;
 207                 case NV_DEVICE_INFO_V0_SOC : getparam->value = 3; break;
 208                 case NV_DEVICE_INFO_V0_IGP :
 209                         if (!pci_is_pcie(pdev))
 210                                 getparam->value = 1;
 211                         else
 212                                 getparam->value = 2;
 213                         break;
 214                 default:
 215                         WARN_ON(1);
 216                         break;
 217                 }
 218                 break;
 219         case NOUVEAU_GETPARAM_FB_SIZE:
 220                 getparam->value = drm->gem.vram_available;
 221                 break;
 222         case NOUVEAU_GETPARAM_AGP_SIZE:
 223                 getparam->value = drm->gem.gart_available;
 224                 break;
 225         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 226                 getparam->value = 0; /* deprecated */
 227                 break;
 228         case NOUVEAU_GETPARAM_PTIMER_TIME:
 229                 getparam->value = nvif_device_time(device);
 230                 break;
 231         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 232                 getparam->value = 1;
 233                 break;
 234         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 235                 getparam->value = 1;
 236                 break;
 237         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 238                 getparam->value = nvkm_gr_units(gr);
 239                 break;
 240         default:
 241                 NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
 242                 return -EINVAL;
 243         }
 244
 245         return 0;
 246 }
 247
 248 int
 249 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 250 {
 251         struct drm_nouveau_channel_alloc *init = data;
 252         struct nouveau_cli *cli = nouveau_cli(file_priv);
 253         struct nouveau_drm *drm = nouveau_drm(dev);
 254         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 255         struct nouveau_abi16_chan *chan;
 256         struct nvif_device *device;
 257         u64 engine;
 258         int ret;
 259
 260         if (unlikely(!abi16))
 261                 return -ENOMEM;
 262
 263         if (!drm->channel)
 264                 return nouveau_abi16_put(abi16, -ENODEV);
 265
 266         device = &abi16->device;
 267
 268         /* hack to allow channel engine type specification on kepler */
 269         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 270                 if (init->fb_ctxdma_handle == ~0) {
 271                         switch (init->tt_ctxdma_handle) {
 272                         case 0x01: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR    ; break;
 273                         case 0x02: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPDEC; break;
 274                         case 0x04: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPPP ; break;
 275                         case 0x08: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSVLD ; break;
 276                         case 0x30: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_CE    ; break;
 277                         default:
 278                                 return nouveau_abi16_put(abi16, -ENOSYS);
 279                         }
 280                 } else {
 281                         engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR;
 282                 }
 283
 284                 if (engine != NV_DEVICE_HOST_RUNLIST_ENGINES_CE)
 285                         engine = nvif_fifo_runlist(device, engine);
 286                 else
 287                         engine = nvif_fifo_runlist_ce(device);
 288                 init->fb_ctxdma_handle = engine;
 289                 init->tt_ctxdma_handle = 0;
 290         }
 291
 292         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 293                 return nouveau_abi16_put(abi16, -EINVAL);
 294
 295         /* allocate "abi16 channel" data and make up a handle for it */
 296         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 297         if (!chan)
 298                 return nouveau_abi16_put(abi16, -ENOMEM);
 299
 300         INIT_LIST_HEAD(&chan->notifiers);
 301         list_add(&chan->head, &abi16->channels);
 302
 303         /* create channel object and initialise dma and fence management */
 304         ret = nouveau_channel_new(drm, device, init->fb_ctxdma_handle,
 305                                   init->tt_ctxdma_handle, false, &chan->chan);
 306         if (ret)
 307                 goto done;
 308
 309         init->channel = chan->chan->chid;
 310
 311         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
 312                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 313                                         NOUVEAU_GEM_DOMAIN_GART;
 314         else
 315         if (chan->chan->push.buffer->bo.resource->mem_type == TTM_PL_VRAM)
 316                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 317         else
 318                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 319
 320         if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 321                 init->subchan[0].handle = 0x00000000;
 322                 init->subchan[0].grclass = 0x0000;
 323                 init->subchan[1].handle = chan->chan->nvsw.handle;
 324                 init->subchan[1].grclass = 0x506e;
 325                 init->nr_subchan = 2;
 326         }
 327
 328         /* Named memory object area */
 329         ret = nouveau_gem_new(cli, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 330                               0, 0, &chan->ntfy);
 331         if (ret == 0)
 332                 ret = nouveau_bo_pin(chan->ntfy, NOUVEAU_GEM_DOMAIN_GART,
 333                                      false);
 334         if (ret)
 335                 goto done;
 336
 337         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 338                 ret = nouveau_vma_new(chan->ntfy, chan->chan->vmm,
 339                                       &chan->ntfy_vma);
 340                 if (ret)
 341                         goto done;
 342         }
 343
 344         ret = drm_gem_handle_create(file_priv, &chan->ntfy->bo.base,
 345                                     &init->notifier_handle);
 346         if (ret)
 347                 goto done;
 348
 349         ret = nvkm_mm_init(&chan->heap, 0, 0, PAGE_SIZE, 1);
 350 done:
 351         if (ret)
 352                 nouveau_abi16_chan_fini(abi16, chan);
 353         return nouveau_abi16_put(abi16, ret);
 354 }
 355
 356 static struct nouveau_abi16_chan *
 357 nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
 358 {
 359         struct nouveau_abi16_chan *chan;
 360
 361         list_for_each_entry(chan, &abi16->channels, head) {
 362                 if (chan->chan->chid == channel)
 363                         return chan;
 364         }
 365
 366         return NULL;
 367 }
 368
 369 int
 370 nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
 371 {
 372         union {
 373                 struct nvif_ioctl_v0 v0;
 374         } *args = data;
 375         struct nouveau_abi16_chan *chan;
 376         struct nouveau_abi16 *abi16;
 377         int ret = -ENOSYS;
 378
 379         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 380                 switch (args->v0.type) {
 381                 case NVIF_IOCTL_V0_NEW:
 382                 case NVIF_IOCTL_V0_MTHD:
 383                 case NVIF_IOCTL_V0_SCLASS:
 384                         break;
 385                 default:
 386                         return -EACCES;
 387                 }
 388         } else
 389                 return ret;
 390
 391         if (!(abi16 = nouveau_abi16(file_priv)))
 392                 return -ENOMEM;
 393
 394         if (args->v0.token != ~0ULL) {
 395                 if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
 396                         return -EINVAL;
 397                 args->v0.object = nvif_handle(&chan->chan->user);
 398                 args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 399                 return 0;
 400         }
 401
 402         args->v0.object = nvif_handle(&abi16->device.object);
 403         args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 404         return 0;
 405 }
 406
 407 int
 408 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 409 {
 410         struct drm_nouveau_channel_free *req = data;
 411         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 412         struct nouveau_abi16_chan *chan;
 413
 414         if (unlikely(!abi16))
 415                 return -ENOMEM;
 416
 417         chan = nouveau_abi16_chan(abi16, req->channel);
 418         if (!chan)
 419                 return nouveau_abi16_put(abi16, -ENOENT);
 420         nouveau_abi16_chan_fini(abi16, chan);
 421         return nouveau_abi16_put(abi16, 0);
 422 }
 423
 424 int
 425 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 426 {
 427         struct drm_nouveau_grobj_alloc *init = data;
 428         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 429         struct nouveau_abi16_chan *chan;
 430         struct nouveau_abi16_ntfy *ntfy;
 431         struct nvif_client *client;
 432         struct nvif_sclass *sclass;
 433         s32 oclass = 0;
 434         int ret, i;
 435
 436         if (unlikely(!abi16))
 437                 return -ENOMEM;
 438
 439         if (init->handle == ~0)
 440                 return nouveau_abi16_put(abi16, -EINVAL);
 441         client = abi16->device.object.client;
 442
 443         chan = nouveau_abi16_chan(abi16, init->channel);
 444         if (!chan)
 445                 return nouveau_abi16_put(abi16, -ENOENT);
 446
 447         ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
 448         if (ret < 0)
 449                 return nouveau_abi16_put(abi16, ret);
 450
 451         if ((init->class & 0x00ff) == 0x006e) {
 452                 /* nvsw: compatibility with older 0x*6e class identifier */
 453                 for (i = 0; !oclass && i < ret; i++) {
 454                         switch (sclass[i].oclass) {
 455                         case NVIF_CLASS_SW_NV04:
 456                         case NVIF_CLASS_SW_NV10:
 457                         case NVIF_CLASS_SW_NV50:
 458                         case NVIF_CLASS_SW_GF100:
 459                                 oclass = sclass[i].oclass;
 460                                 break;
 461                         default:
 462                                 break;
 463                         }
 464                 }
 465         } else
 466         if ((init->class & 0x00ff) == 0x00b1) {
 467                 /* msvld: compatibility with incorrect version exposure */
 468                 for (i = 0; i < ret; i++) {
 469                         if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
 470                                 oclass = sclass[i].oclass;
 471                                 break;
 472                         }
 473                 }
 474         } else
 475         if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
 476                 /* mspdec: compatibility with incorrect version exposure */
 477                 for (i = 0; i < ret; i++) {
 478                         if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
 479                                 oclass = sclass[i].oclass;
 480                                 break;
 481                         }
 482                 }
 483         } else
 484         if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
 485                 /* msppp: compatibility with incorrect version exposure */
 486                 for (i = 0; i < ret; i++) {
 487                         if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
 488                                 oclass = sclass[i].oclass;
 489                                 break;
 490                         }
 491                 }
 492         } else {
 493                 oclass = init->class;
 494         }
 495
 496         nvif_object_sclass_put(&sclass);
 497         if (!oclass)
 498                 return nouveau_abi16_put(abi16, -EINVAL);
 499
 500         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 501         if (!ntfy)
 502                 return nouveau_abi16_put(abi16, -ENOMEM);
 503
 504         list_add(&ntfy->head, &chan->notifiers);
 505
 506         client->route = NVDRM_OBJECT_ABI16;
 507         ret = nvif_object_ctor(&chan->chan->user, "abi16EngObj", init->handle,
 508                                oclass, NULL, 0, &ntfy->object);
 509         client->route = NVDRM_OBJECT_NVIF;
 510
 511         if (ret)
 512                 nouveau_abi16_ntfy_fini(chan, ntfy);
 513         return nouveau_abi16_put(abi16, ret);
 514 }
 515
 516 int
 517 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 518 {
 519         struct drm_nouveau_notifierobj_alloc *info = data;
 520         struct nouveau_drm *drm = nouveau_drm(dev);
 521         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 522         struct nouveau_abi16_chan *chan;
 523         struct nouveau_abi16_ntfy *ntfy;
 524         struct nvif_device *device = &abi16->device;
 525         struct nvif_client *client;
 526         struct nv_dma_v0 args = {};
 527         int ret;
 528
 529         if (unlikely(!abi16))
 530                 return -ENOMEM;
 531
 532         /* completely unnecessary for these chipsets... */
 533         if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 534                 return nouveau_abi16_put(abi16, -EINVAL);
 535         client = abi16->device.object.client;
 536
 537         chan = nouveau_abi16_chan(abi16, info->channel);
 538         if (!chan)
 539                 return nouveau_abi16_put(abi16, -ENOENT);
 540
 541         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 542         if (!ntfy)
 543                 return nouveau_abi16_put(abi16, -ENOMEM);
 544
 545         list_add(&ntfy->head, &chan->notifiers);
 546
 547         ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 548                            &ntfy->node);
 549         if (ret)
 550                 goto done;
 551
 552         args.start = ntfy->node->offset;
 553         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 554         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 555                 args.target = NV_DMA_V0_TARGET_VM;
 556                 args.access = NV_DMA_V0_ACCESS_VM;
 557                 args.start += chan->ntfy_vma->addr;
 558                 args.limit += chan->ntfy_vma->addr;
 559         } else
 560         if (drm->agp.bridge) {
 561                 args.target = NV_DMA_V0_TARGET_AGP;
 562                 args.access = NV_DMA_V0_ACCESS_RDWR;
 563                 args.start += drm->agp.base + chan->ntfy->offset;
 564                 args.limit += drm->agp.base + chan->ntfy->offset;
 565         } else {
 566                 args.target = NV_DMA_V0_TARGET_VM;
 567                 args.access = NV_DMA_V0_ACCESS_RDWR;
 568                 args.start += chan->ntfy->offset;
 569                 args.limit += chan->ntfy->offset;
 570         }
 571
 572         client->route = NVDRM_OBJECT_ABI16;
 573         ret = nvif_object_ctor(&chan->chan->user, "abi16Ntfy", info->handle,
 574                                NV_DMA_IN_MEMORY, &args, sizeof(args),
 575                                &ntfy->object);
 576         client->route = NVDRM_OBJECT_NVIF;
 577         if (ret)
 578                 goto done;
 579
 580         info->offset = ntfy->node->offset;
 581 done:
 582         if (ret)
 583                 nouveau_abi16_ntfy_fini(chan, ntfy);
 584         return nouveau_abi16_put(abi16, ret);
 585 }
 586
 587 int
 588 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 589 {
 590         struct drm_nouveau_gpuobj_free *fini = data;
 591         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 592         struct nouveau_abi16_chan *chan;
 593         struct nouveau_abi16_ntfy *ntfy;
 594         int ret = -ENOENT;
 595
 596         if (unlikely(!abi16))
 597                 return -ENOMEM;
 598
 599         chan = nouveau_abi16_chan(abi16, fini->channel);
 600         if (!chan)
 601                 return nouveau_abi16_put(abi16, -EINVAL);
 602
 603         /* synchronize with the user channel and destroy the gpu object */
 604         nouveau_channel_idle(chan->chan);
 605
 606         list_for_each_entry(ntfy, &chan->notifiers, head) {
 607                 if (ntfy->object.handle == fini->handle) {
 608                         nouveau_abi16_ntfy_fini(chan, ntfy);
 609                         ret = 0;
 610                         break;
 611                 }
 612         }
 613
 614         return nouveau_abi16_put(abi16, ret);
 615 }