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/ioctl.h>
  27 #include <nvif/class.h>
  28 #include <nvif/cl0002.h>
  29 #include <nvif/cla06f.h>
  30 #include <nvif/unpack.h>
  31
  32 #include "nouveau_drv.h"
  33 #include "nouveau_dma.h"
  34 #include "nouveau_gem.h"
  35 #include "nouveau_chan.h"
  36 #include "nouveau_abi16.h"
  37 #include "nouveau_vmm.h"
  38
  39 static struct nouveau_abi16 *
  40 nouveau_abi16(struct drm_file *file_priv)
  41 {
  42         struct nouveau_cli *cli = nouveau_cli(file_priv);
  43         if (!cli->abi16) {
  44                 struct nouveau_abi16 *abi16;
  45                 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  46                 if (cli->abi16) {
  47                         struct nv_device_v0 args = {
  48                                 .device = ~0ULL,
  49                         };
  50
  51                         INIT_LIST_HEAD(&abi16->channels);
  52
  53                         /* allocate device object targeting client's default
  54                          * device (ie. the one that belongs to the fd it
  55                          * opened)
  56                          */
  57                         if (nvif_device_init(&cli->base.object, 0, NV_DEVICE,
  58                                              &args, sizeof(args),
  59                                              &abi16->device) == 0)
  60                                 return cli->abi16;
  61
  62                         kfree(cli->abi16);
  63                         cli->abi16 = NULL;
  64                 }
  65         }
  66         return cli->abi16;
  67 }
  68
  69 struct nouveau_abi16 *
  70 nouveau_abi16_get(struct drm_file *file_priv)
  71 {
  72         struct nouveau_cli *cli = nouveau_cli(file_priv);
  73         mutex_lock(&cli->mutex);
  74         if (nouveau_abi16(file_priv))
  75                 return cli->abi16;
  76         mutex_unlock(&cli->mutex);
  77         return NULL;
  78 }
  79
  80 int
  81 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  82 {
  83         struct nouveau_cli *cli = (void *)abi16->device.object.client;
  84         mutex_unlock(&cli->mutex);
  85         return ret;
  86 }
  87
  88 s32
  89 nouveau_abi16_swclass(struct nouveau_drm *drm)
  90 {
  91         switch (drm->client.device.info.family) {
  92         case NV_DEVICE_INFO_V0_TNT:
  93                 return NVIF_CLASS_SW_NV04;
  94         case NV_DEVICE_INFO_V0_CELSIUS:
  95         case NV_DEVICE_INFO_V0_KELVIN:
  96         case NV_DEVICE_INFO_V0_RANKINE:
  97         case NV_DEVICE_INFO_V0_CURIE:
  98                 return NVIF_CLASS_SW_NV10;
  99         case NV_DEVICE_INFO_V0_TESLA:
 100                 return NVIF_CLASS_SW_NV50;
 101         case NV_DEVICE_INFO_V0_FERMI:
 102         case NV_DEVICE_INFO_V0_KEPLER:
 103         case NV_DEVICE_INFO_V0_MAXWELL:
 104         case NV_DEVICE_INFO_V0_PASCAL:
 105                 return NVIF_CLASS_SW_GF100;
 106         }
 107
 108         return 0x0000;
 109 }
 110
 111 static void
 112 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 113                         struct nouveau_abi16_ntfy *ntfy)
 114 {
 115         nvif_object_fini(&ntfy->object);
 116         nvkm_mm_free(&chan->heap, &ntfy->node);
 117         list_del(&ntfy->head);
 118         kfree(ntfy);
 119 }
 120
 121 static void
 122 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 123                         struct nouveau_abi16_chan *chan)
 124 {
 125         struct nouveau_abi16_ntfy *ntfy, *temp;
 126
 127         /* wait for all activity to stop before releasing notify object, which
 128          * may be still in use */
 129         if (chan->chan && chan->ntfy)
 130                 nouveau_channel_idle(chan->chan);
 131
 132         /* cleanup notifier state */
 133         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 134                 nouveau_abi16_ntfy_fini(chan, ntfy);
 135         }
 136
 137         if (chan->ntfy) {
 138                 nouveau_vma_del(&chan->ntfy_vma);
 139                 nouveau_bo_unpin(chan->ntfy);
 140                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 141         }
 142
 143         if (chan->heap.block_size)
 144                 nvkm_mm_fini(&chan->heap);
 145
 146         /* destroy channel object, all children will be killed too */
 147         if (chan->chan) {
 148                 nouveau_channel_idle(chan->chan);
 149                 nouveau_channel_del(&chan->chan);
 150         }
 151
 152         list_del(&chan->head);
 153         kfree(chan);
 154 }
 155
 156 void
 157 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 158 {
 159         struct nouveau_cli *cli = (void *)abi16->device.object.client;
 160         struct nouveau_abi16_chan *chan, *temp;
 161
 162         /* cleanup channels */
 163         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 164                 nouveau_abi16_chan_fini(abi16, chan);
 165         }
 166
 167         /* destroy the device object */
 168         nvif_device_fini(&abi16->device);
 169
 170         kfree(cli->abi16);
 171         cli->abi16 = NULL;
 172 }
 173
 174 int
 175 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 176 {
 177         struct nouveau_cli *cli = nouveau_cli(file_priv);
 178         struct nouveau_drm *drm = nouveau_drm(dev);
 179         struct nvif_device *device = &drm->client.device;
 180         struct nvkm_gr *gr = nvxx_gr(device);
 181         struct drm_nouveau_getparam *getparam = data;
 182
 183         switch (getparam->param) {
 184         case NOUVEAU_GETPARAM_CHIPSET_ID:
 185                 getparam->value = device->info.chipset;
 186                 break;
 187         case NOUVEAU_GETPARAM_PCI_VENDOR:
 188                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 189                         getparam->value = dev->pdev->vendor;
 190                 else
 191                         getparam->value = 0;
 192                 break;
 193         case NOUVEAU_GETPARAM_PCI_DEVICE:
 194                 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
 195                         getparam->value = dev->pdev->device;
 196                 else
 197                         getparam->value = 0;
 198                 break;
 199         case NOUVEAU_GETPARAM_BUS_TYPE:
 200                 switch (device->info.platform) {
 201                 case NV_DEVICE_INFO_V0_AGP : getparam->value = 0; break;
 202                 case NV_DEVICE_INFO_V0_PCI : getparam->value = 1; break;
 203                 case NV_DEVICE_INFO_V0_PCIE: getparam->value = 2; break;
 204                 case NV_DEVICE_INFO_V0_SOC : getparam->value = 3; break;
 205                 case NV_DEVICE_INFO_V0_IGP :
 206                         if (!pci_is_pcie(dev->pdev))
 207                                 getparam->value = 1;
 208                         else
 209                                 getparam->value = 2;
 210                         break;
 211                 default:
 212                         WARN_ON(1);
 213                         break;
 214                 }
 215         case NOUVEAU_GETPARAM_FB_SIZE:
 216                 getparam->value = drm->gem.vram_available;
 217                 break;
 218         case NOUVEAU_GETPARAM_AGP_SIZE:
 219                 getparam->value = drm->gem.gart_available;
 220                 break;
 221         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 222                 getparam->value = 0; /* deprecated */
 223                 break;
 224         case NOUVEAU_GETPARAM_PTIMER_TIME:
 225                 getparam->value = nvif_device_time(device);
 226                 break;
 227         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 228                 getparam->value = 1;
 229                 break;
 230         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 231                 getparam->value = 1;
 232                 break;
 233         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 234                 getparam->value = nvkm_gr_units(gr);
 235                 break;
 236         default:
 237                 NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
 238                 return -EINVAL;
 239         }
 240
 241         return 0;
 242 }
 243
 244 int
 245 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 246 {
 247         return -EINVAL;
 248 }
 249
 250 int
 251 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 252 {
 253         struct drm_nouveau_channel_alloc *init = data;
 254         struct nouveau_cli *cli = nouveau_cli(file_priv);
 255         struct nouveau_drm *drm = nouveau_drm(dev);
 256         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 257         struct nouveau_abi16_chan *chan;
 258         struct nvif_device *device;
 259         int ret;
 260
 261         if (unlikely(!abi16))
 262                 return -ENOMEM;
 263
 264         if (!drm->channel)
 265                 return nouveau_abi16_put(abi16, -ENODEV);
 266
 267         device = &abi16->device;
 268
 269         /* hack to allow channel engine type specification on kepler */
 270         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 271                 if (init->fb_ctxdma_handle != ~0)
 272                         init->fb_ctxdma_handle = NVA06F_V0_ENGINE_GR;
 273                 else {
 274                         init->fb_ctxdma_handle = 0;
 275 #define _(A,B) if (init->tt_ctxdma_handle & (A)) init->fb_ctxdma_handle |= (B)
 276                         _(0x01, NVA06F_V0_ENGINE_GR);
 277                         _(0x02, NVA06F_V0_ENGINE_MSPDEC);
 278                         _(0x04, NVA06F_V0_ENGINE_MSPPP);
 279                         _(0x08, NVA06F_V0_ENGINE_MSVLD);
 280                         _(0x10, NVA06F_V0_ENGINE_CE0);
 281                         _(0x20, NVA06F_V0_ENGINE_CE1);
 282                         _(0x40, NVA06F_V0_ENGINE_MSENC);
 283 #undef _
 284                 }
 285
 286                 /* allow flips to be executed if this is a graphics channel */
 287                 init->tt_ctxdma_handle = 0;
 288                 if (init->fb_ctxdma_handle == NVA06F_V0_ENGINE_GR)
 289                         init->tt_ctxdma_handle = 1;
 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, &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.mem.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, TTM_PL_FLAG_TT, false);
 333         if (ret)
 334                 goto done;
 335
 336         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 337                 ret = nouveau_vma_new(chan->ntfy, &cli->vmm, &chan->ntfy_vma);
 338                 if (ret)
 339                         goto done;
 340         }
 341
 342         ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 343                                     &init->notifier_handle);
 344         if (ret)
 345                 goto done;
 346
 347         ret = nvkm_mm_init(&chan->heap, 0, 0, PAGE_SIZE, 1);
 348 done:
 349         if (ret)
 350                 nouveau_abi16_chan_fini(abi16, chan);
 351         return nouveau_abi16_put(abi16, ret);
 352 }
 353
 354 static struct nouveau_abi16_chan *
 355 nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
 356 {
 357         struct nouveau_abi16_chan *chan;
 358
 359         list_for_each_entry(chan, &abi16->channels, head) {
 360                 if (chan->chan->chid == channel)
 361                         return chan;
 362         }
 363
 364         return NULL;
 365 }
 366
 367 int
 368 nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
 369 {
 370         union {
 371                 struct nvif_ioctl_v0 v0;
 372         } *args = data;
 373         struct nouveau_abi16_chan *chan;
 374         struct nouveau_abi16 *abi16;
 375         int ret = -ENOSYS;
 376
 377         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 378                 switch (args->v0.type) {
 379                 case NVIF_IOCTL_V0_NEW:
 380                 case NVIF_IOCTL_V0_MTHD:
 381                 case NVIF_IOCTL_V0_SCLASS:
 382                         break;
 383                 default:
 384                         return -EACCES;
 385                 }
 386         } else
 387                 return ret;
 388
 389         if (!(abi16 = nouveau_abi16(file_priv)))
 390                 return -ENOMEM;
 391
 392         if (args->v0.token != ~0ULL) {
 393                 if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
 394                         return -EINVAL;
 395                 args->v0.object = nvif_handle(&chan->chan->user);
 396                 args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 397                 return 0;
 398         }
 399
 400         args->v0.object = nvif_handle(&abi16->device.object);
 401         args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
 402         return 0;
 403 }
 404
 405 int
 406 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 407 {
 408         struct drm_nouveau_channel_free *req = data;
 409         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 410         struct nouveau_abi16_chan *chan;
 411
 412         if (unlikely(!abi16))
 413                 return -ENOMEM;
 414
 415         chan = nouveau_abi16_chan(abi16, req->channel);
 416         if (!chan)
 417                 return nouveau_abi16_put(abi16, -ENOENT);
 418         nouveau_abi16_chan_fini(abi16, chan);
 419         return nouveau_abi16_put(abi16, 0);
 420 }
 421
 422 int
 423 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 424 {
 425         struct drm_nouveau_grobj_alloc *init = data;
 426         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 427         struct nouveau_abi16_chan *chan;
 428         struct nouveau_abi16_ntfy *ntfy;
 429         struct nvif_client *client;
 430         struct nvif_sclass *sclass;
 431         s32 oclass = 0;
 432         int ret, i;
 433
 434         if (unlikely(!abi16))
 435                 return -ENOMEM;
 436
 437         if (init->handle == ~0)
 438                 return nouveau_abi16_put(abi16, -EINVAL);
 439         client = abi16->device.object.client;
 440
 441         chan = nouveau_abi16_chan(abi16, init->channel);
 442         if (!chan)
 443                 return nouveau_abi16_put(abi16, -ENOENT);
 444
 445         ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
 446         if (ret < 0)
 447                 return nouveau_abi16_put(abi16, ret);
 448
 449         if ((init->class & 0x00ff) == 0x006e) {
 450                 /* nvsw: compatibility with older 0x*6e class identifier */
 451                 for (i = 0; !oclass && i < ret; i++) {
 452                         switch (sclass[i].oclass) {
 453                         case NVIF_CLASS_SW_NV04:
 454                         case NVIF_CLASS_SW_NV10:
 455                         case NVIF_CLASS_SW_NV50:
 456                         case NVIF_CLASS_SW_GF100:
 457                                 oclass = sclass[i].oclass;
 458                                 break;
 459                         default:
 460                                 break;
 461                         }
 462                 }
 463         } else
 464         if ((init->class & 0x00ff) == 0x00b1) {
 465                 /* msvld: compatibility with incorrect version exposure */
 466                 for (i = 0; i < ret; i++) {
 467                         if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
 468                                 oclass = sclass[i].oclass;
 469                                 break;
 470                         }
 471                 }
 472         } else
 473         if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
 474                 /* mspdec: compatibility with incorrect version exposure */
 475                 for (i = 0; i < ret; i++) {
 476                         if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
 477                                 oclass = sclass[i].oclass;
 478                                 break;
 479                         }
 480                 }
 481         } else
 482         if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
 483                 /* msppp: compatibility with incorrect version exposure */
 484                 for (i = 0; i < ret; i++) {
 485                         if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
 486                                 oclass = sclass[i].oclass;
 487                                 break;
 488                         }
 489                 }
 490         } else {
 491                 oclass = init->class;
 492         }
 493
 494         nvif_object_sclass_put(&sclass);
 495         if (!oclass)
 496                 return nouveau_abi16_put(abi16, -EINVAL);
 497
 498         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 499         if (!ntfy)
 500                 return nouveau_abi16_put(abi16, -ENOMEM);
 501
 502         list_add(&ntfy->head, &chan->notifiers);
 503
 504         client->route = NVDRM_OBJECT_ABI16;
 505         ret = nvif_object_init(&chan->chan->user, init->handle, oclass,
 506                                NULL, 0, &ntfy->object);
 507         client->route = NVDRM_OBJECT_NVIF;
 508
 509         if (ret)
 510                 nouveau_abi16_ntfy_fini(chan, ntfy);
 511         return nouveau_abi16_put(abi16, ret);
 512 }
 513
 514 int
 515 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 516 {
 517         struct drm_nouveau_notifierobj_alloc *info = data;
 518         struct nouveau_drm *drm = nouveau_drm(dev);
 519         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 520         struct nouveau_abi16_chan *chan;
 521         struct nouveau_abi16_ntfy *ntfy;
 522         struct nvif_device *device = &abi16->device;
 523         struct nvif_client *client;
 524         struct nv_dma_v0 args = {};
 525         int ret;
 526
 527         if (unlikely(!abi16))
 528                 return -ENOMEM;
 529
 530         /* completely unnecessary for these chipsets... */
 531         if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 532                 return nouveau_abi16_put(abi16, -EINVAL);
 533         client = abi16->device.object.client;
 534
 535         chan = nouveau_abi16_chan(abi16, info->channel);
 536         if (!chan)
 537                 return nouveau_abi16_put(abi16, -ENOENT);
 538
 539         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 540         if (!ntfy)
 541                 return nouveau_abi16_put(abi16, -ENOMEM);
 542
 543         list_add(&ntfy->head, &chan->notifiers);
 544
 545         ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 546                            &ntfy->node);
 547         if (ret)
 548                 goto done;
 549
 550         args.start = ntfy->node->offset;
 551         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 552         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 553                 args.target = NV_DMA_V0_TARGET_VM;
 554                 args.access = NV_DMA_V0_ACCESS_VM;
 555                 args.start += chan->ntfy_vma->addr;
 556                 args.limit += chan->ntfy_vma->addr;
 557         } else
 558         if (drm->agp.bridge) {
 559                 args.target = NV_DMA_V0_TARGET_AGP;
 560                 args.access = NV_DMA_V0_ACCESS_RDWR;
 561                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 562                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 563         } else {
 564                 args.target = NV_DMA_V0_TARGET_VM;
 565                 args.access = NV_DMA_V0_ACCESS_RDWR;
 566                 args.start += chan->ntfy->bo.offset;
 567                 args.limit += chan->ntfy->bo.offset;
 568         }
 569
 570         client->route = NVDRM_OBJECT_ABI16;
 571         client->super = true;
 572         ret = nvif_object_init(&chan->chan->user, info->handle,
 573                                NV_DMA_IN_MEMORY, &args, sizeof(args),
 574                                &ntfy->object);
 575         client->super = false;
 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 }