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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/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
39static struct nouveau_abi16 *
40nouveau_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_ctor(&cli->base.object, "abi16Device",
58 0, NV_DEVICE, &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
69struct nouveau_abi16 *
70nouveau_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
80int
81nouveau_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
88s32
89nouveau_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 case NV_DEVICE_INFO_V0_VOLTA:
106 return NVIF_CLASS_SW_GF100;
107 }
108
109 return 0x0000;
110}
111
112static void
113nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
114 struct nouveau_abi16_ntfy *ntfy)
115{
116 nvif_object_dtor(&ntfy->object);
117 nvkm_mm_free(&chan->heap, &ntfy->node);
118 list_del(&ntfy->head);
119 kfree(ntfy);
120}
121
122static void
123nouveau_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 cleaning up */
129 if (chan->chan)
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_put(&chan->ntfy->bo.base);
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 nvif_object_dtor(&chan->ce);
149 nouveau_channel_del(&chan->chan);
150 }
151
152 list_del(&chan->head);
153 kfree(chan);
154}
155
156void
157nouveau_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_dtor(&abi16->device);
169
170 kfree(cli->abi16);
171 cli->abi16 = NULL;
172}
173
174int
175nouveau_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 struct pci_dev *pdev = to_pci_dev(dev->dev);
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 = 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 = 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(pdev))
208 getparam->value = 1;
209 else
210 getparam->value = 2;
211 break;
212 default:
213 WARN_ON(1);
214 break;
215 }
216 break;
217 case NOUVEAU_GETPARAM_FB_SIZE:
218 getparam->value = drm->gem.vram_available;
219 break;
220 case NOUVEAU_GETPARAM_AGP_SIZE:
221 getparam->value = drm->gem.gart_available;
222 break;
223 case NOUVEAU_GETPARAM_VM_VRAM_BASE:
224 getparam->value = 0; /* deprecated */
225 break;
226 case NOUVEAU_GETPARAM_PTIMER_TIME:
227 getparam->value = nvif_device_time(device);
228 break;
229 case NOUVEAU_GETPARAM_HAS_BO_USAGE:
230 getparam->value = 1;
231 break;
232 case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
233 getparam->value = 1;
234 break;
235 case NOUVEAU_GETPARAM_GRAPH_UNITS:
236 getparam->value = nvkm_gr_units(gr);
237 break;
238 default:
239 NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
240 return -EINVAL;
241 }
242
243 return 0;
244}
245
246int
247nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
248{
249 struct drm_nouveau_channel_alloc *init = data;
250 struct nouveau_cli *cli = nouveau_cli(file_priv);
251 struct nouveau_drm *drm = nouveau_drm(dev);
252 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
253 struct nouveau_abi16_chan *chan;
254 struct nvif_device *device;
255 u64 engine, runm;
256 int ret;
257
258 if (unlikely(!abi16))
259 return -ENOMEM;
260
261 if (!drm->channel)
262 return nouveau_abi16_put(abi16, -ENODEV);
263
264 device = &abi16->device;
265 engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR;
266
267 /* hack to allow channel engine type specification on kepler */
268 if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
269 if (init->fb_ctxdma_handle == ~0) {
270 switch (init->tt_ctxdma_handle) {
271 case 0x01: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR ; break;
272 case 0x02: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPDEC; break;
273 case 0x04: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPPP ; break;
274 case 0x08: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSVLD ; break;
275 case 0x30: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_CE ; break;
276 default:
277 return nouveau_abi16_put(abi16, -ENOSYS);
278 }
279
280 init->fb_ctxdma_handle = 0;
281 init->tt_ctxdma_handle = 0;
282 }
283 }
284
285 if (engine != NV_DEVICE_HOST_RUNLIST_ENGINES_CE)
286 runm = nvif_fifo_runlist(device, engine);
287 else
288 runm = nvif_fifo_runlist_ce(device);
289
290 if (!runm || init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
291 return nouveau_abi16_put(abi16, -EINVAL);
292
293 /* allocate "abi16 channel" data and make up a handle for it */
294 chan = kzalloc(sizeof(*chan), GFP_KERNEL);
295 if (!chan)
296 return nouveau_abi16_put(abi16, -ENOMEM);
297
298 INIT_LIST_HEAD(&chan->notifiers);
299 list_add(&chan->head, &abi16->channels);
300
301 /* create channel object and initialise dma and fence management */
302 ret = nouveau_channel_new(drm, device, false, runm, init->fb_ctxdma_handle,
303 init->tt_ctxdma_handle, &chan->chan);
304 if (ret)
305 goto done;
306
307 init->channel = chan->chan->chid;
308
309 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
310 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
311 NOUVEAU_GEM_DOMAIN_GART;
312 else
313 if (chan->chan->push.buffer->bo.resource->mem_type == TTM_PL_VRAM)
314 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
315 else
316 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
317
318 if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
319 init->subchan[0].handle = 0x00000000;
320 init->subchan[0].grclass = 0x0000;
321 init->subchan[1].handle = chan->chan->nvsw.handle;
322 init->subchan[1].grclass = 0x506e;
323 init->nr_subchan = 2;
324 }
325
326 /* Workaround "nvc0" gallium driver using classes it doesn't allocate on
327 * Kepler and above. NVKM no longer always sets CE_CTX_VALID as part of
328 * channel init, now we know what that stuff actually is.
329 *
330 * Doesn't matter for Kepler/Pascal, CE context stored in NV_RAMIN.
331 *
332 * Userspace was fixed prior to adding Ampere support.
333 */
334 switch (device->info.family) {
335 case NV_DEVICE_INFO_V0_VOLTA:
336 ret = nvif_object_ctor(&chan->chan->user, "abi16CeWar", 0, VOLTA_DMA_COPY_A,
337 NULL, 0, &chan->ce);
338 if (ret)
339 goto done;
340 break;
341 case NV_DEVICE_INFO_V0_TURING:
342 ret = nvif_object_ctor(&chan->chan->user, "abi16CeWar", 0, TURING_DMA_COPY_A,
343 NULL, 0, &chan->ce);
344 if (ret)
345 goto done;
346 break;
347 default:
348 break;
349 }
350
351 /* Named memory object area */
352 ret = nouveau_gem_new(cli, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
353 0, 0, &chan->ntfy);
354 if (ret == 0)
355 ret = nouveau_bo_pin(chan->ntfy, NOUVEAU_GEM_DOMAIN_GART,
356 false);
357 if (ret)
358 goto done;
359
360 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
361 ret = nouveau_vma_new(chan->ntfy, chan->chan->vmm,
362 &chan->ntfy_vma);
363 if (ret)
364 goto done;
365 }
366
367 ret = drm_gem_handle_create(file_priv, &chan->ntfy->bo.base,
368 &init->notifier_handle);
369 if (ret)
370 goto done;
371
372 ret = nvkm_mm_init(&chan->heap, 0, 0, PAGE_SIZE, 1);
373done:
374 if (ret)
375 nouveau_abi16_chan_fini(abi16, chan);
376 return nouveau_abi16_put(abi16, ret);
377}
378
379static struct nouveau_abi16_chan *
380nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
381{
382 struct nouveau_abi16_chan *chan;
383
384 list_for_each_entry(chan, &abi16->channels, head) {
385 if (chan->chan->chid == channel)
386 return chan;
387 }
388
389 return NULL;
390}
391
392int
393nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
394{
395 union {
396 struct nvif_ioctl_v0 v0;
397 } *args = data;
398 struct nouveau_abi16_chan *chan;
399 struct nouveau_abi16 *abi16;
400 int ret = -ENOSYS;
401
402 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
403 switch (args->v0.type) {
404 case NVIF_IOCTL_V0_NEW:
405 case NVIF_IOCTL_V0_MTHD:
406 case NVIF_IOCTL_V0_SCLASS:
407 break;
408 default:
409 return -EACCES;
410 }
411 } else
412 return ret;
413
414 if (!(abi16 = nouveau_abi16(file_priv)))
415 return -ENOMEM;
416
417 if (args->v0.token != ~0ULL) {
418 if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
419 return -EINVAL;
420 args->v0.object = nvif_handle(&chan->chan->user);
421 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
422 return 0;
423 }
424
425 args->v0.object = nvif_handle(&abi16->device.object);
426 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
427 return 0;
428}
429
430int
431nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
432{
433 struct drm_nouveau_channel_free *req = data;
434 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
435 struct nouveau_abi16_chan *chan;
436
437 if (unlikely(!abi16))
438 return -ENOMEM;
439
440 chan = nouveau_abi16_chan(abi16, req->channel);
441 if (!chan)
442 return nouveau_abi16_put(abi16, -ENOENT);
443 nouveau_abi16_chan_fini(abi16, chan);
444 return nouveau_abi16_put(abi16, 0);
445}
446
447int
448nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
449{
450 struct drm_nouveau_grobj_alloc *init = data;
451 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
452 struct nouveau_abi16_chan *chan;
453 struct nouveau_abi16_ntfy *ntfy;
454 struct nvif_client *client;
455 struct nvif_sclass *sclass;
456 s32 oclass = 0;
457 int ret, i;
458
459 if (unlikely(!abi16))
460 return -ENOMEM;
461
462 if (init->handle == ~0)
463 return nouveau_abi16_put(abi16, -EINVAL);
464 client = abi16->device.object.client;
465
466 chan = nouveau_abi16_chan(abi16, init->channel);
467 if (!chan)
468 return nouveau_abi16_put(abi16, -ENOENT);
469
470 ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
471 if (ret < 0)
472 return nouveau_abi16_put(abi16, ret);
473
474 if ((init->class & 0x00ff) == 0x006e) {
475 /* nvsw: compatibility with older 0x*6e class identifier */
476 for (i = 0; !oclass && i < ret; i++) {
477 switch (sclass[i].oclass) {
478 case NVIF_CLASS_SW_NV04:
479 case NVIF_CLASS_SW_NV10:
480 case NVIF_CLASS_SW_NV50:
481 case NVIF_CLASS_SW_GF100:
482 oclass = sclass[i].oclass;
483 break;
484 default:
485 break;
486 }
487 }
488 } else
489 if ((init->class & 0x00ff) == 0x00b1) {
490 /* msvld: compatibility with incorrect version exposure */
491 for (i = 0; i < ret; i++) {
492 if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
493 oclass = sclass[i].oclass;
494 break;
495 }
496 }
497 } else
498 if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
499 /* mspdec: compatibility with incorrect version exposure */
500 for (i = 0; i < ret; i++) {
501 if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
502 oclass = sclass[i].oclass;
503 break;
504 }
505 }
506 } else
507 if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
508 /* msppp: compatibility with incorrect version exposure */
509 for (i = 0; i < ret; i++) {
510 if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
511 oclass = sclass[i].oclass;
512 break;
513 }
514 }
515 } else {
516 oclass = init->class;
517 }
518
519 nvif_object_sclass_put(&sclass);
520 if (!oclass)
521 return nouveau_abi16_put(abi16, -EINVAL);
522
523 ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
524 if (!ntfy)
525 return nouveau_abi16_put(abi16, -ENOMEM);
526
527 list_add(&ntfy->head, &chan->notifiers);
528
529 client->route = NVDRM_OBJECT_ABI16;
530 ret = nvif_object_ctor(&chan->chan->user, "abi16EngObj", init->handle,
531 oclass, NULL, 0, &ntfy->object);
532 client->route = NVDRM_OBJECT_NVIF;
533
534 if (ret)
535 nouveau_abi16_ntfy_fini(chan, ntfy);
536 return nouveau_abi16_put(abi16, ret);
537}
538
539int
540nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
541{
542 struct drm_nouveau_notifierobj_alloc *info = data;
543 struct nouveau_drm *drm = nouveau_drm(dev);
544 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
545 struct nouveau_abi16_chan *chan;
546 struct nouveau_abi16_ntfy *ntfy;
547 struct nvif_device *device = &abi16->device;
548 struct nvif_client *client;
549 struct nv_dma_v0 args = {};
550 int ret;
551
552 if (unlikely(!abi16))
553 return -ENOMEM;
554
555 /* completely unnecessary for these chipsets... */
556 if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
557 return nouveau_abi16_put(abi16, -EINVAL);
558 client = abi16->device.object.client;
559
560 chan = nouveau_abi16_chan(abi16, info->channel);
561 if (!chan)
562 return nouveau_abi16_put(abi16, -ENOENT);
563
564 ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
565 if (!ntfy)
566 return nouveau_abi16_put(abi16, -ENOMEM);
567
568 list_add(&ntfy->head, &chan->notifiers);
569
570 ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
571 &ntfy->node);
572 if (ret)
573 goto done;
574
575 args.start = ntfy->node->offset;
576 args.limit = ntfy->node->offset + ntfy->node->length - 1;
577 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
578 args.target = NV_DMA_V0_TARGET_VM;
579 args.access = NV_DMA_V0_ACCESS_VM;
580 args.start += chan->ntfy_vma->addr;
581 args.limit += chan->ntfy_vma->addr;
582 } else
583 if (drm->agp.bridge) {
584 args.target = NV_DMA_V0_TARGET_AGP;
585 args.access = NV_DMA_V0_ACCESS_RDWR;
586 args.start += drm->agp.base + chan->ntfy->offset;
587 args.limit += drm->agp.base + chan->ntfy->offset;
588 } else {
589 args.target = NV_DMA_V0_TARGET_VM;
590 args.access = NV_DMA_V0_ACCESS_RDWR;
591 args.start += chan->ntfy->offset;
592 args.limit += chan->ntfy->offset;
593 }
594
595 client->route = NVDRM_OBJECT_ABI16;
596 ret = nvif_object_ctor(&chan->chan->user, "abi16Ntfy", info->handle,
597 NV_DMA_IN_MEMORY, &args, sizeof(args),
598 &ntfy->object);
599 client->route = NVDRM_OBJECT_NVIF;
600 if (ret)
601 goto done;
602
603 info->offset = ntfy->node->offset;
604done:
605 if (ret)
606 nouveau_abi16_ntfy_fini(chan, ntfy);
607 return nouveau_abi16_put(abi16, ret);
608}
609
610int
611nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
612{
613 struct drm_nouveau_gpuobj_free *fini = data;
614 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
615 struct nouveau_abi16_chan *chan;
616 struct nouveau_abi16_ntfy *ntfy;
617 int ret = -ENOENT;
618
619 if (unlikely(!abi16))
620 return -ENOMEM;
621
622 chan = nouveau_abi16_chan(abi16, fini->channel);
623 if (!chan)
624 return nouveau_abi16_put(abi16, -EINVAL);
625
626 /* synchronize with the user channel and destroy the gpu object */
627 nouveau_channel_idle(chan->chan);
628
629 list_for_each_entry(ntfy, &chan->notifiers, head) {
630 if (ntfy->object.handle == fini->handle) {
631 nouveau_abi16_ntfy_fini(chan, ntfy);
632 ret = 0;
633 break;
634 }
635 }
636
637 return nouveau_abi16_put(abi16, ret);
638}