1 /* $NetBSD: nouveau_abi16.c,v 1.6 2021/12/18 23:45:32 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_abi16.c,v 1.6 2021/12/18 23:45:32 riastradh Exp $");
28
29 #include <nvif/client.h>
30 #include <nvif/driver.h>
31 #include <nvif/fifo.h>
32 #include <nvif/ioctl.h>
33 #include <nvif/class.h>
34 #include <nvif/cl0002.h>
35 #include <nvif/cla06f.h>
36 #include <nvif/unpack.h>
37
38 #include "nouveau_drv.h"
39 #include "nouveau_dma.h"
40 #include "nouveau_gem.h"
41 #include "nouveau_chan.h"
42 #include "nouveau_abi16.h"
43 #include "nouveau_vmm.h"
44
45 static struct nouveau_abi16 *
nouveau_abi16(struct drm_file * file_priv)46 nouveau_abi16(struct drm_file *file_priv)
47 {
48 struct nouveau_cli *cli = nouveau_cli(file_priv);
49 if (!cli->abi16) {
50 struct nouveau_abi16 *abi16;
51 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
52 if (cli->abi16) {
53 struct nv_device_v0 args = {
54 .device = ~0ULL,
55 };
56
57 INIT_LIST_HEAD(&abi16->channels);
58
59 /* allocate device object targeting client's default
60 * device (ie. the one that belongs to the fd it
61 * opened)
62 */
63 if (nvif_device_init(&cli->base.object, 0, NV_DEVICE,
64 &args, sizeof(args),
65 &abi16->device) == 0)
66 return cli->abi16;
67
68 kfree(cli->abi16);
69 cli->abi16 = NULL;
70 }
71 }
72 return cli->abi16;
73 }
74
75 struct nouveau_abi16 *
nouveau_abi16_get(struct drm_file * file_priv)76 nouveau_abi16_get(struct drm_file *file_priv)
77 {
78 struct nouveau_cli *cli = nouveau_cli(file_priv);
79 mutex_lock(&cli->mutex);
80 if (nouveau_abi16(file_priv))
81 return cli->abi16;
82 mutex_unlock(&cli->mutex);
83 return NULL;
84 }
85
86 int
nouveau_abi16_put(struct nouveau_abi16 * abi16,int ret)87 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
88 {
89 struct nouveau_cli *cli = (void *)abi16->device.object.client;
90 mutex_unlock(&cli->mutex);
91 return ret;
92 }
93
94 s32
nouveau_abi16_swclass(struct nouveau_drm * drm)95 nouveau_abi16_swclass(struct nouveau_drm *drm)
96 {
97 switch (drm->client.device.info.family) {
98 case NV_DEVICE_INFO_V0_TNT:
99 return NVIF_CLASS_SW_NV04;
100 case NV_DEVICE_INFO_V0_CELSIUS:
101 case NV_DEVICE_INFO_V0_KELVIN:
102 case NV_DEVICE_INFO_V0_RANKINE:
103 case NV_DEVICE_INFO_V0_CURIE:
104 return NVIF_CLASS_SW_NV10;
105 case NV_DEVICE_INFO_V0_TESLA:
106 return NVIF_CLASS_SW_NV50;
107 case NV_DEVICE_INFO_V0_FERMI:
108 case NV_DEVICE_INFO_V0_KEPLER:
109 case NV_DEVICE_INFO_V0_MAXWELL:
110 case NV_DEVICE_INFO_V0_PASCAL:
111 case NV_DEVICE_INFO_V0_VOLTA:
112 return NVIF_CLASS_SW_GF100;
113 }
114
115 return 0x0000;
116 }
117
118 static void
nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan * chan,struct nouveau_abi16_ntfy * ntfy)119 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
120 struct nouveau_abi16_ntfy *ntfy)
121 {
122 nvif_object_fini(&ntfy->object);
123 nvkm_mm_free(&chan->heap, &ntfy->node);
124 list_del(&ntfy->head);
125 kfree(ntfy);
126 }
127
128 static void
nouveau_abi16_chan_fini(struct nouveau_abi16 * abi16,struct nouveau_abi16_chan * chan)129 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
130 struct nouveau_abi16_chan *chan)
131 {
132 struct nouveau_abi16_ntfy *ntfy, *temp;
133
134 /* wait for all activity to stop before releasing notify object, which
135 * may be still in use */
136 if (chan->chan && chan->ntfy)
137 nouveau_channel_idle(chan->chan);
138
139 /* cleanup notifier state */
140 list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
141 nouveau_abi16_ntfy_fini(chan, ntfy);
142 }
143
144 if (chan->ntfy) {
145 nouveau_vma_del(&chan->ntfy_vma);
146 nouveau_bo_unpin(chan->ntfy);
147 drm_gem_object_put_unlocked(&chan->ntfy->bo.base);
148 }
149
150 if (chan->heap.block_size)
151 nvkm_mm_fini(&chan->heap);
152
153 /* destroy channel object, all children will be killed too */
154 if (chan->chan) {
155 nouveau_channel_idle(chan->chan);
156 nouveau_channel_del(&chan->chan);
157 }
158
159 list_del(&chan->head);
160 kfree(chan);
161 }
162
163 void
nouveau_abi16_fini(struct nouveau_abi16 * abi16)164 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
165 {
166 struct nouveau_cli *cli = (void *)abi16->device.object.client;
167 struct nouveau_abi16_chan *chan, *temp;
168
169 /* cleanup channels */
170 list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
171 nouveau_abi16_chan_fini(abi16, chan);
172 }
173
174 /* destroy the device object */
175 nvif_device_fini(&abi16->device);
176
177 kfree(cli->abi16);
178 cli->abi16 = NULL;
179 }
180
181 int
nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)182 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
183 {
184 struct nouveau_cli *cli = nouveau_cli(file_priv);
185 struct nouveau_drm *drm = nouveau_drm(dev);
186 struct nvif_device *device = &drm->client.device;
187 struct nvkm_gr *gr = nvxx_gr(device);
188 struct drm_nouveau_getparam *getparam = data;
189
190 switch (getparam->param) {
191 case NOUVEAU_GETPARAM_CHIPSET_ID:
192 getparam->value = device->info.chipset;
193 break;
194 case NOUVEAU_GETPARAM_PCI_VENDOR:
195 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
196 getparam->value = dev->pdev->vendor;
197 else
198 getparam->value = 0;
199 break;
200 case NOUVEAU_GETPARAM_PCI_DEVICE:
201 if (device->info.platform != NV_DEVICE_INFO_V0_SOC)
202 getparam->value = dev->pdev->device;
203 else
204 getparam->value = 0;
205 break;
206 case NOUVEAU_GETPARAM_BUS_TYPE:
207 switch (device->info.platform) {
208 case NV_DEVICE_INFO_V0_AGP : getparam->value = 0; break;
209 case NV_DEVICE_INFO_V0_PCI : getparam->value = 1; break;
210 case NV_DEVICE_INFO_V0_PCIE: getparam->value = 2; break;
211 case NV_DEVICE_INFO_V0_SOC : getparam->value = 3; break;
212 case NV_DEVICE_INFO_V0_IGP :
213 if (!pci_is_pcie(dev->pdev))
214 getparam->value = 1;
215 else
216 getparam->value = 2;
217 break;
218 default:
219 WARN_ON(1);
220 break;
221 }
222 break;
223 case NOUVEAU_GETPARAM_FB_SIZE:
224 getparam->value = drm->gem.vram_available;
225 break;
226 case NOUVEAU_GETPARAM_AGP_SIZE:
227 getparam->value = drm->gem.gart_available;
228 break;
229 case NOUVEAU_GETPARAM_VM_VRAM_BASE:
230 getparam->value = 0; /* deprecated */
231 break;
232 case NOUVEAU_GETPARAM_PTIMER_TIME:
233 getparam->value = nvif_device_time(device);
234 break;
235 case NOUVEAU_GETPARAM_HAS_BO_USAGE:
236 getparam->value = 1;
237 break;
238 case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
239 getparam->value = 1;
240 break;
241 case NOUVEAU_GETPARAM_GRAPH_UNITS:
242 getparam->value = nvkm_gr_units(gr);
243 break;
244 default:
245 NV_PRINTK(dbg, cli, "unknown parameter %"PRId64"\n", getparam->param);
246 return -EINVAL;
247 }
248
249 return 0;
250 }
251
252 int
nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)253 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
254 {
255 struct drm_nouveau_channel_alloc *init = data;
256 struct nouveau_cli *cli = nouveau_cli(file_priv);
257 struct nouveau_drm *drm = nouveau_drm(dev);
258 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
259 struct nouveau_abi16_chan *chan;
260 struct nvif_device *device;
261 u64 engine;
262 int ret;
263
264 if (unlikely(!abi16))
265 return -ENOMEM;
266
267 if (!drm->channel)
268 return nouveau_abi16_put(abi16, -ENODEV);
269
270 device = &abi16->device;
271
272 /* hack to allow channel engine type specification on kepler */
273 if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
274 if (init->fb_ctxdma_handle == ~0) {
275 switch (init->tt_ctxdma_handle) {
276 case 0x01: engine = NV_DEVICE_INFO_ENGINE_GR ; break;
277 case 0x02: engine = NV_DEVICE_INFO_ENGINE_MSPDEC; break;
278 case 0x04: engine = NV_DEVICE_INFO_ENGINE_MSPPP ; break;
279 case 0x08: engine = NV_DEVICE_INFO_ENGINE_MSVLD ; break;
280 case 0x30: engine = NV_DEVICE_INFO_ENGINE_CE ; break;
281 default:
282 return nouveau_abi16_put(abi16, -ENOSYS);
283 }
284 } else {
285 engine = NV_DEVICE_INFO_ENGINE_GR;
286 }
287
288 if (engine != NV_DEVICE_INFO_ENGINE_CE)
289 engine = nvif_fifo_runlist(device, engine);
290 else
291 engine = nvif_fifo_runlist_ce(device);
292 init->fb_ctxdma_handle = engine;
293 init->tt_ctxdma_handle = 0;
294 }
295
296 if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
297 return nouveau_abi16_put(abi16, -EINVAL);
298
299 /* allocate "abi16 channel" data and make up a handle for it */
300 chan = kzalloc(sizeof(*chan), GFP_KERNEL);
301 if (!chan)
302 return nouveau_abi16_put(abi16, -ENOMEM);
303
304 INIT_LIST_HEAD(&chan->notifiers);
305 list_add(&chan->head, &abi16->channels);
306
307 /* create channel object and initialise dma and fence management */
308 ret = nouveau_channel_new(drm, device, init->fb_ctxdma_handle,
309 init->tt_ctxdma_handle, false, &chan->chan);
310 if (ret)
311 goto done;
312
313 init->channel = chan->chan->chid;
314
315 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
316 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
317 NOUVEAU_GEM_DOMAIN_GART;
318 else
319 if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
320 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
321 else
322 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
323
324 if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
325 init->subchan[0].handle = 0x00000000;
326 init->subchan[0].grclass = 0x0000;
327 init->subchan[1].handle = chan->chan->nvsw.handle;
328 init->subchan[1].grclass = 0x506e;
329 init->nr_subchan = 2;
330 }
331
332 /* Named memory object area */
333 ret = nouveau_gem_new(cli, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
334 0, 0, &chan->ntfy);
335 if (ret == 0)
336 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT, false);
337 if (ret)
338 goto done;
339
340 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
341 ret = nouveau_vma_new(chan->ntfy, chan->chan->vmm,
342 &chan->ntfy_vma);
343 if (ret)
344 goto done;
345 }
346
347 ret = drm_gem_handle_create(file_priv, &chan->ntfy->bo.base,
348 &init->notifier_handle);
349 if (ret)
350 goto done;
351
352 ret = nvkm_mm_init(&chan->heap, 0, 0, PAGE_SIZE, 1);
353 done:
354 if (ret)
355 nouveau_abi16_chan_fini(abi16, chan);
356 return nouveau_abi16_put(abi16, ret);
357 }
358
359 static struct nouveau_abi16_chan *
nouveau_abi16_chan(struct nouveau_abi16 * abi16,int channel)360 nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
361 {
362 struct nouveau_abi16_chan *chan;
363
364 list_for_each_entry(chan, &abi16->channels, head) {
365 if (chan->chan->chid == channel)
366 return chan;
367 }
368
369 return NULL;
370 }
371
372 int
nouveau_abi16_usif(struct drm_file * file_priv,void * data,u32 size)373 nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
374 {
375 union {
376 struct nvif_ioctl_v0 v0;
377 } *args = data;
378 struct nouveau_abi16_chan *chan;
379 struct nouveau_abi16 *abi16;
380 int ret = -ENOSYS;
381
382 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
383 switch (args->v0.type) {
384 case NVIF_IOCTL_V0_NEW:
385 case NVIF_IOCTL_V0_MTHD:
386 case NVIF_IOCTL_V0_SCLASS:
387 break;
388 default:
389 return -EACCES;
390 }
391 } else
392 return ret;
393
394 if (!(abi16 = nouveau_abi16(file_priv)))
395 return -ENOMEM;
396
397 if (args->v0.token != ~0ULL) {
398 if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
399 return -EINVAL;
400 args->v0.object = nvif_handle(&chan->chan->user);
401 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
402 return 0;
403 }
404
405 args->v0.object = nvif_handle(&abi16->device.object);
406 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
407 return 0;
408 }
409
410 int
nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)411 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
412 {
413 struct drm_nouveau_channel_free *req = data;
414 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
415 struct nouveau_abi16_chan *chan;
416
417 if (unlikely(!abi16))
418 return -ENOMEM;
419
420 chan = nouveau_abi16_chan(abi16, req->channel);
421 if (!chan)
422 return nouveau_abi16_put(abi16, -ENOENT);
423 nouveau_abi16_chan_fini(abi16, chan);
424 return nouveau_abi16_put(abi16, 0);
425 }
426
427 int
nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)428 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
429 {
430 struct drm_nouveau_grobj_alloc *init = data;
431 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
432 struct nouveau_abi16_chan *chan;
433 struct nouveau_abi16_ntfy *ntfy;
434 struct nvif_client *client;
435 struct nvif_sclass *sclass;
436 s32 oclass = 0;
437 int ret, i;
438
439 if (unlikely(!abi16))
440 return -ENOMEM;
441
442 if (init->handle == ~0)
443 return nouveau_abi16_put(abi16, -EINVAL);
444 client = abi16->device.object.client;
445
446 chan = nouveau_abi16_chan(abi16, init->channel);
447 if (!chan)
448 return nouveau_abi16_put(abi16, -ENOENT);
449
450 ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
451 if (ret < 0)
452 return nouveau_abi16_put(abi16, ret);
453
454 if ((init->class & 0x00ff) == 0x006e) {
455 /* nvsw: compatibility with older 0x*6e class identifier */
456 for (i = 0; !oclass && i < ret; i++) {
457 switch (sclass[i].oclass) {
458 case NVIF_CLASS_SW_NV04:
459 case NVIF_CLASS_SW_NV10:
460 case NVIF_CLASS_SW_NV50:
461 case NVIF_CLASS_SW_GF100:
462 oclass = sclass[i].oclass;
463 break;
464 default:
465 break;
466 }
467 }
468 } else
469 if ((init->class & 0x00ff) == 0x00b1) {
470 /* msvld: compatibility with incorrect version exposure */
471 for (i = 0; i < ret; i++) {
472 if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
473 oclass = sclass[i].oclass;
474 break;
475 }
476 }
477 } else
478 if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
479 /* mspdec: compatibility with incorrect version exposure */
480 for (i = 0; i < ret; i++) {
481 if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
482 oclass = sclass[i].oclass;
483 break;
484 }
485 }
486 } else
487 if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
488 /* msppp: compatibility with incorrect version exposure */
489 for (i = 0; i < ret; i++) {
490 if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
491 oclass = sclass[i].oclass;
492 break;
493 }
494 }
495 } else {
496 oclass = init->class;
497 }
498
499 nvif_object_sclass_put(&sclass);
500 if (!oclass)
501 return nouveau_abi16_put(abi16, -EINVAL);
502
503 ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
504 if (!ntfy)
505 return nouveau_abi16_put(abi16, -ENOMEM);
506
507 list_add(&ntfy->head, &chan->notifiers);
508
509 client->route = NVDRM_OBJECT_ABI16;
510 ret = nvif_object_init(&chan->chan->user, init->handle, oclass,
511 NULL, 0, &ntfy->object);
512 client->route = NVDRM_OBJECT_NVIF;
513
514 if (ret)
515 nouveau_abi16_ntfy_fini(chan, ntfy);
516 return nouveau_abi16_put(abi16, ret);
517 }
518
519 int
nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)520 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
521 {
522 struct drm_nouveau_notifierobj_alloc *info = data;
523 struct nouveau_drm *drm = nouveau_drm(dev);
524 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
525 struct nouveau_abi16_chan *chan;
526 struct nouveau_abi16_ntfy *ntfy;
527 struct nvif_device *device = &abi16->device;
528 struct nvif_client *client;
529 struct nv_dma_v0 args = {};
530 int ret;
531
532 if (unlikely(!abi16))
533 return -ENOMEM;
534
535 /* completely unnecessary for these chipsets... */
536 if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
537 return nouveau_abi16_put(abi16, -EINVAL);
538 client = abi16->device.object.client;
539
540 chan = nouveau_abi16_chan(abi16, info->channel);
541 if (!chan)
542 return nouveau_abi16_put(abi16, -ENOENT);
543
544 ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
545 if (!ntfy)
546 return nouveau_abi16_put(abi16, -ENOMEM);
547
548 list_add(&ntfy->head, &chan->notifiers);
549
550 ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
551 &ntfy->node);
552 if (ret)
553 goto done;
554
555 args.start = ntfy->node->offset;
556 args.limit = ntfy->node->offset + ntfy->node->length - 1;
557 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
558 args.target = NV_DMA_V0_TARGET_VM;
559 args.access = NV_DMA_V0_ACCESS_VM;
560 args.start += chan->ntfy_vma->addr;
561 args.limit += chan->ntfy_vma->addr;
562 } else
563 if (drm->agp.bridge) {
564 args.target = NV_DMA_V0_TARGET_AGP;
565 args.access = NV_DMA_V0_ACCESS_RDWR;
566 args.start += drm->agp.base + chan->ntfy->bo.offset;
567 args.limit += drm->agp.base + chan->ntfy->bo.offset;
568 } else {
569 args.target = NV_DMA_V0_TARGET_VM;
570 args.access = NV_DMA_V0_ACCESS_RDWR;
571 args.start += chan->ntfy->bo.offset;
572 args.limit += chan->ntfy->bo.offset;
573 }
574
575 client->route = NVDRM_OBJECT_ABI16;
576 client->super = true;
577 ret = nvif_object_init(&chan->chan->user, info->handle,
578 NV_DMA_IN_MEMORY, &args, sizeof(args),
579 &ntfy->object);
580 client->super = false;
581 client->route = NVDRM_OBJECT_NVIF;
582 if (ret)
583 goto done;
584
585 info->offset = ntfy->node->offset;
586 done:
587 if (ret)
588 nouveau_abi16_ntfy_fini(chan, ntfy);
589 return nouveau_abi16_put(abi16, ret);
590 }
591
592 int
nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)593 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
594 {
595 struct drm_nouveau_gpuobj_free *fini = data;
596 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
597 struct nouveau_abi16_chan *chan;
598 struct nouveau_abi16_ntfy *ntfy;
599 int ret = -ENOENT;
600
601 if (unlikely(!abi16))
602 return -ENOMEM;
603
604 chan = nouveau_abi16_chan(abi16, fini->channel);
605 if (!chan)
606 return nouveau_abi16_put(abi16, -EINVAL);
607
608 /* synchronize with the user channel and destroy the gpu object */
609 nouveau_channel_idle(chan->chan);
610
611 list_for_each_entry(ntfy, &chan->notifiers, head) {
612 if (ntfy->object.handle == fini->handle) {
613 nouveau_abi16_ntfy_fini(chan, ntfy);
614 ret = 0;
615 break;
616 }
617 }
618
619 return nouveau_abi16_put(abi16, ret);
620 }
621