[deliverable/linux.git] / drivers / gpu / drm / nouveau / nouveau_abi16.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include <nvif/client.h>
#include <nvif/driver.h>
#include <nvif/ioctl.h>
#include <nvif/class.h>
#include <nvif/unpack.h>

#include "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_gem.h"
#include "nouveau_chan.h"
#include "nouveau_abi16.h"

static struct nouveau_abi16 *
nouveau_abi16(struct drm_file *file_priv)
{
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	if (!cli->abi16) {
		struct nouveau_abi16 *abi16;
		cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
		if (cli->abi16) {
			struct nv_device_v0 args = {
				.device = ~0ULL,
			};

			INIT_LIST_HEAD(&abi16->channels);

			/* allocate device object targeting client's default
			 * device (ie. the one that belongs to the fd it
			 * opened)
			 */
			if (nvif_device_init(&cli->base.object, 0, NV_DEVICE,
					     &args, sizeof(args),
					     &abi16->device) == 0)
				return cli->abi16;

			kfree(cli->abi16);
			cli->abi16 = NULL;
		}
	}
	return cli->abi16;
}

struct nouveau_abi16 *
nouveau_abi16_get(struct drm_file *file_priv)
{
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	mutex_lock(&cli->mutex);
	if (nouveau_abi16(file_priv))
		return cli->abi16;
	mutex_unlock(&cli->mutex);
	return NULL;
}

int
nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
{
	struct nouveau_cli *cli = (void *)abi16->device.object.client;
	mutex_unlock(&cli->mutex);
	return ret;
}

s32
nouveau_abi16_swclass(struct nouveau_drm *drm)
{
	switch (drm->device.info.family) {
	case NV_DEVICE_INFO_V0_TNT:
		return NVIF_IOCTL_NEW_V0_SW_NV04;
	case NV_DEVICE_INFO_V0_CELSIUS:
	case NV_DEVICE_INFO_V0_KELVIN:
	case NV_DEVICE_INFO_V0_RANKINE:
	case NV_DEVICE_INFO_V0_CURIE:
		return NVIF_IOCTL_NEW_V0_SW_NV10;
	case NV_DEVICE_INFO_V0_TESLA:
		return NVIF_IOCTL_NEW_V0_SW_NV50;
	case NV_DEVICE_INFO_V0_FERMI:
	case NV_DEVICE_INFO_V0_KEPLER:
	case NV_DEVICE_INFO_V0_MAXWELL:
		return NVIF_IOCTL_NEW_V0_SW_GF100;
	}

	return 0x0000;
}

static void
nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
			struct nouveau_abi16_ntfy *ntfy)
{
	nvif_object_fini(&ntfy->object);
	nvkm_mm_free(&chan->heap, &ntfy->node);
	list_del(&ntfy->head);
	kfree(ntfy);
}

static void
nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
			struct nouveau_abi16_chan *chan)
{
	struct nouveau_abi16_ntfy *ntfy, *temp;

	/* wait for all activity to stop before releasing notify object, which
	 * may be still in use */
	if (chan->chan && chan->ntfy)
		nouveau_channel_idle(chan->chan);

	/* cleanup notifier state */
	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
		nouveau_abi16_ntfy_fini(chan, ntfy);
	}

	if (chan->ntfy) {
		nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
		nouveau_bo_unpin(chan->ntfy);
		drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
	}

	if (chan->heap.block_size)
		nvkm_mm_fini(&chan->heap);

	/* destroy channel object, all children will be killed too */
	if (chan->chan) {
		nouveau_channel_idle(chan->chan);
		nouveau_channel_del(&chan->chan);
	}

	list_del(&chan->head);
	kfree(chan);
}

void
nouveau_abi16_fini(struct nouveau_abi16 *abi16)
{
	struct nouveau_cli *cli = (void *)abi16->device.object.client;
	struct nouveau_abi16_chan *chan, *temp;

	/* cleanup channels */
	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
		nouveau_abi16_chan_fini(abi16, chan);
	}

	/* destroy the device object */
	nvif_device_fini(&abi16->device);

	kfree(cli->abi16);
	cli->abi16 = NULL;
}

int
nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
{
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvif_device *device = &drm->device;
	struct nvkm_gr *gr = nvxx_gr(device);
	struct drm_nouveau_getparam *getparam = data;

	switch (getparam->param) {
	case NOUVEAU_GETPARAM_CHIPSET_ID:
		getparam->value = device->info.chipset;
		break;
	case NOUVEAU_GETPARAM_PCI_VENDOR:
		if (nvxx_device(device)->func->pci)
			getparam->value = dev->pdev->vendor;
		else
			getparam->value = 0;
		break;
	case NOUVEAU_GETPARAM_PCI_DEVICE:
		if (nvxx_device(device)->func->pci)
			getparam->value = dev->pdev->device;
		else
			getparam->value = 0;
		break;
	case NOUVEAU_GETPARAM_BUS_TYPE:
		if (!nvxx_device(device)->func->pci)
			getparam->value = 3;
		else
		if (drm_pci_device_is_agp(dev))
			getparam->value = 0;
		else
		if (!pci_is_pcie(dev->pdev))
			getparam->value = 1;
		else
			getparam->value = 2;
		break;
	case NOUVEAU_GETPARAM_FB_SIZE:
		getparam->value = drm->gem.vram_available;
		break;
	case NOUVEAU_GETPARAM_AGP_SIZE:
		getparam->value = drm->gem.gart_available;
		break;
	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
		getparam->value = 0; /* deprecated */
		break;
	case NOUVEAU_GETPARAM_PTIMER_TIME:
		getparam->value = nvif_device_time(device);
		break;
	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
		getparam->value = 1;
		break;
	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
		getparam->value = 1;
		break;
	case NOUVEAU_GETPARAM_GRAPH_UNITS:
		getparam->value = nvkm_gr_units(gr);
		break;
	default:
		NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
		return -EINVAL;
	}

	return 0;
}

int
nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
{
	return -EINVAL;
}

int
nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
{
	struct drm_nouveau_channel_alloc *init = data;
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
	struct nouveau_abi16_chan *chan;
	struct nvif_device *device;
	int ret;

	if (unlikely(!abi16))
		return -ENOMEM;

	if (!drm->channel)
		return nouveau_abi16_put(abi16, -ENODEV);

	device = &abi16->device;

	/* hack to allow channel engine type specification on kepler */
	if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
		if (init->fb_ctxdma_handle != ~0)
			init->fb_ctxdma_handle = KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR;
		else
			init->fb_ctxdma_handle = init->tt_ctxdma_handle;

		/* allow flips to be executed if this is a graphics channel */
		init->tt_ctxdma_handle = 0;
		if (init->fb_ctxdma_handle == KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR)
			init->tt_ctxdma_handle = 1;
	}

	if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
		return nouveau_abi16_put(abi16, -EINVAL);

	/* allocate "abi16 channel" data and make up a handle for it */
	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
	if (!chan)
		return nouveau_abi16_put(abi16, -ENOMEM);

	INIT_LIST_HEAD(&chan->notifiers);
	list_add(&chan->head, &abi16->channels);

	/* create channel object and initialise dma and fence management */
	ret = nouveau_channel_new(drm, device, init->fb_ctxdma_handle,
				  init->tt_ctxdma_handle, &chan->chan);
	if (ret)
		goto done;

	init->channel = chan->chan->chid;

	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
					NOUVEAU_GEM_DOMAIN_GART;
	else
	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
	else
		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;

	if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
		init->subchan[0].handle = 0x00000000;
		init->subchan[0].grclass = 0x0000;
		init->subchan[1].handle = chan->chan->nvsw.handle;
		init->subchan[1].grclass = 0x506e;
		init->nr_subchan = 2;
	}

	/* Named memory object area */
	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
			      0, 0, &chan->ntfy);
	if (ret == 0)
		ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT, false);
	if (ret)
		goto done;

	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
		ret = nouveau_bo_vma_add(chan->ntfy, cli->vm,
					&chan->ntfy_vma);
		if (ret)
			goto done;
	}

	ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
				    &init->notifier_handle);
	if (ret)
		goto done;

	ret = nvkm_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
done:
	if (ret)
		nouveau_abi16_chan_fini(abi16, chan);
	return nouveau_abi16_put(abi16, ret);
}

static struct nouveau_abi16_chan *
nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
{
	struct nouveau_abi16_chan *chan;

	list_for_each_entry(chan, &abi16->channels, head) {
		if (chan->chan->chid == channel)
			return chan;
	}

	return NULL;
}

int
nouveau_abi16_usif(struct drm_file *file_priv, void *data, u32 size)
{
	union {
		struct nvif_ioctl_v0 v0;
	} *args = data;
	struct nouveau_abi16_chan *chan;
	struct nouveau_abi16 *abi16;
	int ret;

	if (nvif_unpack(args->v0, 0, 0, true)) {
		switch (args->v0.type) {
		case NVIF_IOCTL_V0_NEW:
		case NVIF_IOCTL_V0_MTHD:
		case NVIF_IOCTL_V0_SCLASS:
			break;
		default:
			return -EACCES;
		}
	} else
		return ret;

	if (!(abi16 = nouveau_abi16(file_priv)))
		return -ENOMEM;

	if (args->v0.token != ~0ULL) {
		if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
			return -EINVAL;
		args->v0.object = nvif_handle(&chan->chan->user);
		args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
		return 0;
	}

	args->v0.object = nvif_handle(&abi16->device.object);
	args->v0.owner  = NVIF_IOCTL_V0_OWNER_ANY;
	return 0;
}

int
nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
{
	struct drm_nouveau_channel_free *req = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
	struct nouveau_abi16_chan *chan;

	if (unlikely(!abi16))
		return -ENOMEM;

	chan = nouveau_abi16_chan(abi16, req->channel);
	if (!chan)
		return nouveau_abi16_put(abi16, -ENOENT);
	nouveau_abi16_chan_fini(abi16, chan);
	return nouveau_abi16_put(abi16, 0);
}

int
nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
{
	struct drm_nouveau_grobj_alloc *init = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
	struct nouveau_abi16_chan *chan;
	struct nouveau_abi16_ntfy *ntfy;
	struct nvif_client *client;
	struct nvif_sclass *sclass;
	s32 oclass = 0;
	int ret, i;

	if (unlikely(!abi16))
		return -ENOMEM;

	if (init->handle == ~0)
		return nouveau_abi16_put(abi16, -EINVAL);
	client = abi16->device.object.client;

	chan = nouveau_abi16_chan(abi16, init->channel);
	if (!chan)
		return nouveau_abi16_put(abi16, -ENOENT);

	ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
	if (ret < 0)
		return nouveau_abi16_put(abi16, ret);

	if ((init->class & 0x00ff) == 0x006e) {
		/* nvsw: compatibility with older 0x*6e class identifier */
		for (i = 0; !oclass && i < ret; i++) {
			switch (sclass[i].oclass) {
			case NVIF_IOCTL_NEW_V0_SW_NV04:
			case NVIF_IOCTL_NEW_V0_SW_NV10:
			case NVIF_IOCTL_NEW_V0_SW_NV50:
			case NVIF_IOCTL_NEW_V0_SW_GF100:
				oclass = sclass[i].oclass;
				break;
			default:
				break;
			}
		}
	} else
	if ((init->class & 0x00ff) == 0x00b1) {
		/* msvld: compatibility with incorrect version exposure */
		for (i = 0; i < ret; i++) {
			if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
				oclass = sclass[i].oclass;
				break;
			}
		}
	} else
	if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
		/* mspdec: compatibility with incorrect version exposure */
		for (i = 0; i < ret; i++) {
			if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
				oclass = sclass[i].oclass;
				break;
			}
		}
	} else
	if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
		/* msppp: compatibility with incorrect version exposure */
		for (i = 0; i < ret; i++) {
			if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
				oclass = sclass[i].oclass;
				break;
			}
		}
	} else {
		oclass = init->class;
	}

	nvif_object_sclass_put(&sclass);
	if (!oclass)
		return nouveau_abi16_put(abi16, -EINVAL);

	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
	if (!ntfy)
		return nouveau_abi16_put(abi16, -ENOMEM);

	list_add(&ntfy->head, &chan->notifiers);

	client->route = NVDRM_OBJECT_ABI16;
	ret = nvif_object_init(&chan->chan->user, init->handle, oclass,
			       NULL, 0, &ntfy->object);
	client->route = NVDRM_OBJECT_NVIF;

	if (ret)
		nouveau_abi16_ntfy_fini(chan, ntfy);
	return nouveau_abi16_put(abi16, ret);
}

int
nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
{
	struct drm_nouveau_notifierobj_alloc *info = data;
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
	struct nouveau_abi16_chan *chan;
	struct nouveau_abi16_ntfy *ntfy;
	struct nvif_device *device = &abi16->device;
	struct nvif_client *client;
	struct nv_dma_v0 args = {};
	int ret;

	if (unlikely(!abi16))
		return -ENOMEM;

	/* completely unnecessary for these chipsets... */
	if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
		return nouveau_abi16_put(abi16, -EINVAL);
	client = abi16->device.object.client;

	chan = nouveau_abi16_chan(abi16, info->channel);
	if (!chan)
		return nouveau_abi16_put(abi16, -ENOENT);

	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
	if (!ntfy)
		return nouveau_abi16_put(abi16, -ENOMEM);

	list_add(&ntfy->head, &chan->notifiers);

	ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
			   &ntfy->node);
	if (ret)
		goto done;

	args.start = ntfy->node->offset;
	args.limit = ntfy->node->offset + ntfy->node->length - 1;
	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
		args.target = NV_DMA_V0_TARGET_VM;
		args.access = NV_DMA_V0_ACCESS_VM;
		args.start += chan->ntfy_vma.offset;
		args.limit += chan->ntfy_vma.offset;
	} else
	if (drm->agp.bridge) {
		args.target = NV_DMA_V0_TARGET_AGP;
		args.access = NV_DMA_V0_ACCESS_RDWR;
		args.start += drm->agp.base + chan->ntfy->bo.offset;
		args.limit += drm->agp.base + chan->ntfy->bo.offset;
	} else {
		args.target = NV_DMA_V0_TARGET_VM;
		args.access = NV_DMA_V0_ACCESS_RDWR;
		args.start += chan->ntfy->bo.offset;
		args.limit += chan->ntfy->bo.offset;
	}

	client->route = NVDRM_OBJECT_ABI16;
	client->super = true;
	ret = nvif_object_init(&chan->chan->user, info->handle,
			       NV_DMA_IN_MEMORY, &args, sizeof(args),
			       &ntfy->object);
	client->super = false;
	client->route = NVDRM_OBJECT_NVIF;
	if (ret)
		goto done;

	info->offset = ntfy->node->offset;
done:
	if (ret)
		nouveau_abi16_ntfy_fini(chan, ntfy);
	return nouveau_abi16_put(abi16, ret);
}

int
nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
{
	struct drm_nouveau_gpuobj_free *fini = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
	struct nouveau_abi16_chan *chan;
	struct nouveau_abi16_ntfy *ntfy;
	int ret = -ENOENT;

	if (unlikely(!abi16))
		return -ENOMEM;

	chan = nouveau_abi16_chan(abi16, fini->channel);
	if (!chan)
		return nouveau_abi16_put(abi16, -EINVAL);

	/* synchronize with the user channel and destroy the gpu object */
	nouveau_channel_idle(chan->chan);

	list_for_each_entry(ntfy, &chan->notifiers, head) {
		if (ntfy->object.handle == fini->handle) {
			nouveau_abi16_ntfy_fini(chan, ntfy);
			ret = 0;
			break;
		}
	}

	return nouveau_abi16_put(abi16, ret);
}
Commit	Line	Data
2a259a3d BS	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
a4e610b5 BS	24	#include <nvif/client.h>
	25	#include <nvif/driver.h>
	26	#include <nvif/ioctl.h>
fdb751ef	27	#include <nvif/class.h>
2621a416	28	#include <nvif/unpack.h>
2a259a3d	29
ebb945a9	30	#include "nouveau_drm.h"
2a259a3d	31	#include "nouveau_dma.h"
ebb945a9 BS	32	#include "nouveau_gem.h"
ebb945a9 BS	33	#include "nouveau_chan.h"
2a259a3d	34	#include "nouveau_abi16.h"
ebb945a9	35
786a57ef BS	36	static struct nouveau_abi16 *
786a57ef BS	37	nouveau_abi16(struct drm_file *file_priv)
ebb945a9 BS	38	{
ebb945a9 BS	39	struct nouveau_cli *cli = nouveau_cli(file_priv);
ebb945a9 BS	40	if (!cli->abi16) {
	41	struct nouveau_abi16 *abi16;
	42	cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
	43	if (cli->abi16) {
586491e6 BS	44	struct nv_device_v0 args = {
	45	.device = ~0ULL,
	46	};
	47
ebb945a9	48	INIT_LIST_HEAD(&abi16->channels);
ebb945a9 BS	49
	50	/* allocate device object targeting client's default
	51	* device (ie. the one that belongs to the fd it
	52	* opened)
	53	*/
fcf3f91c	54	if (nvif_device_init(&cli->base.object, 0, NV_DEVICE,
586491e6	55	&args, sizeof(args),
0ad72863	56	&abi16->device) == 0)
ebb945a9 BS	57	return cli->abi16;
	58
	59	kfree(cli->abi16);
	60	cli->abi16 = NULL;
	61	}
ebb945a9 BS	62	}
	63	return cli->abi16;
	64	}
	65
786a57ef BS	66	struct nouveau_abi16 *
	67	nouveau_abi16_get(struct drm_file *file_priv)
	68	{
	69	struct nouveau_cli *cli = nouveau_cli(file_priv);
	70	mutex_lock(&cli->mutex);
	71	if (nouveau_abi16(file_priv))
	72	return cli->abi16;
	73	mutex_unlock(&cli->mutex);
	74	return NULL;
	75	}
	76
ebb945a9 BS	77	int
	78	nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
	79	{
a01ca78c	80	struct nouveau_cli cli = (void )abi16->device.object.client;
ebb945a9 BS	81	mutex_unlock(&cli->mutex);
	82	return ret;
	83	}
	84
f58ddf95	85	s32
ebb945a9 BS	86	nouveau_abi16_swclass(struct nouveau_drm *drm)
ebb945a9 BS	87	{
967e7bde BS	88	switch (drm->device.info.family) {
967e7bde BS	89	case NV_DEVICE_INFO_V0_TNT:
f58ddf95	90	return NVIF_IOCTL_NEW_V0_SW_NV04;
967e7bde BS	91	case NV_DEVICE_INFO_V0_CELSIUS:
	92	case NV_DEVICE_INFO_V0_KELVIN:
	93	case NV_DEVICE_INFO_V0_RANKINE:
	94	case NV_DEVICE_INFO_V0_CURIE:
f58ddf95	95	return NVIF_IOCTL_NEW_V0_SW_NV10;
967e7bde	96	case NV_DEVICE_INFO_V0_TESLA:
f58ddf95	97	return NVIF_IOCTL_NEW_V0_SW_NV50;
967e7bde BS	98	case NV_DEVICE_INFO_V0_FERMI:
	99	case NV_DEVICE_INFO_V0_KEPLER:
	100	case NV_DEVICE_INFO_V0_MAXWELL:
f58ddf95	101	return NVIF_IOCTL_NEW_V0_SW_GF100;
ebb945a9 BS	102	}
	103
	104	return 0x0000;
	105	}
	106
	107	static void
	108	nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
	109	struct nouveau_abi16_ntfy *ntfy)
	110	{
a01ca78c	111	nvif_object_fini(&ntfy->object);
be83cd4e	112	nvkm_mm_free(&chan->heap, &ntfy->node);
ebb945a9 BS	113	list_del(&ntfy->head);
	114	kfree(ntfy);
	115	}
	116
	117	static void
	118	nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
	119	struct nouveau_abi16_chan *chan)
	120	{
	121	struct nouveau_abi16_ntfy ntfy, temp;
	122
2b77c1c0 MS	123	/* wait for all activity to stop before releasing notify object, which
	124	* may be still in use */
	125	if (chan->chan && chan->ntfy)
	126	nouveau_channel_idle(chan->chan);
	127
ebb945a9 BS	128	/* cleanup notifier state */
	129	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
	130	nouveau_abi16_ntfy_fini(chan, ntfy);
	131	}
	132
	133	if (chan->ntfy) {
	134	nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
198c14a0	135	nouveau_bo_unpin(chan->ntfy);
55fb74ad	136	drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
ebb945a9 BS	137	}
	138
	139	if (chan->heap.block_size)
be83cd4e	140	nvkm_mm_fini(&chan->heap);
ebb945a9 BS	141
	142	/* destroy channel object, all children will be killed too */
	143	if (chan->chan) {
fbd58ebd	144	nouveau_channel_idle(chan->chan);
ebb945a9 BS	145	nouveau_channel_del(&chan->chan);
	146	}
	147
	148	list_del(&chan->head);
	149	kfree(chan);
	150	}
	151
	152	void
	153	nouveau_abi16_fini(struct nouveau_abi16 *abi16)
	154	{
a01ca78c	155	struct nouveau_cli cli = (void )abi16->device.object.client;
ebb945a9 BS	156	struct nouveau_abi16_chan chan, temp;
	157
	158	/* cleanup channels */
	159	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
	160	nouveau_abi16_chan_fini(abi16, chan);
	161	}
	162
	163	/* destroy the device object */
0ad72863	164	nvif_device_fini(&abi16->device);
ebb945a9 BS	165
	166	kfree(cli->abi16);
	167	cli->abi16 = NULL;
	168	}
2a259a3d BS	169
	170	int
	171	nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
	172	{
fa2bade9	173	struct nouveau_cli *cli = nouveau_cli(file_priv);
ebb945a9	174	struct nouveau_drm *drm = nouveau_drm(dev);
967e7bde	175	struct nvif_device *device = &drm->device;
be83cd4e	176	struct nvkm_gr *gr = nvxx_gr(device);
2a259a3d BS	177	struct drm_nouveau_getparam *getparam = data;
	178
	179	switch (getparam->param) {
	180	case NOUVEAU_GETPARAM_CHIPSET_ID:
967e7bde	181	getparam->value = device->info.chipset;
2a259a3d BS	182	break;
2a259a3d BS	183	case NOUVEAU_GETPARAM_PCI_VENDOR:
26c9e8ef	184	if (nvxx_device(device)->func->pci)
420b9469 AC	185	getparam->value = dev->pdev->vendor;
	186	else
	187	getparam->value = 0;
2a259a3d BS	188	break;
2a259a3d BS	189	case NOUVEAU_GETPARAM_PCI_DEVICE:
26c9e8ef	190	if (nvxx_device(device)->func->pci)
420b9469 AC	191	getparam->value = dev->pdev->device;
	192	else
	193	getparam->value = 0;
2a259a3d BS	194	break;
2a259a3d BS	195	case NOUVEAU_GETPARAM_BUS_TYPE:
26c9e8ef	196	if (!nvxx_device(device)->func->pci)
420b9469 AC	197	getparam->value = 3;
420b9469 AC	198	else
2a259a3d BS	199	if (drm_pci_device_is_agp(dev))
	200	getparam->value = 0;
	201	else
	202	if (!pci_is_pcie(dev->pdev))
	203	getparam->value = 1;
	204	else
	205	getparam->value = 2;
	206	break;
	207	case NOUVEAU_GETPARAM_FB_SIZE:
ebb945a9	208	getparam->value = drm->gem.vram_available;
2a259a3d BS	209	break;
2a259a3d BS	210	case NOUVEAU_GETPARAM_AGP_SIZE:
ebb945a9	211	getparam->value = drm->gem.gart_available;
2a259a3d BS	212	break;
	213	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
	214	getparam->value = 0; /* deprecated */
	215	break;
	216	case NOUVEAU_GETPARAM_PTIMER_TIME:
56f67dc1	217	getparam->value = nvif_device_time(device);
2a259a3d BS	218	break;
	219	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
	220	getparam->value = 1;
	221	break;
	222	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
	223	getparam->value = 1;
	224	break;
	225	case NOUVEAU_GETPARAM_GRAPH_UNITS:
c85ee6ca	226	getparam->value = nvkm_gr_units(gr);
7e22e71e	227	break;
2a259a3d	228	default:
9ad97ede	229	NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
2a259a3d BS	230	return -EINVAL;
	231	}
	232
	233	return 0;
	234	}
	235
	236	int
	237	nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
	238	{
	239	return -EINVAL;
	240	}
	241
	242	int
	243	nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
	244	{
2a259a3d	245	struct drm_nouveau_channel_alloc *init = data;
ebb945a9 BS	246	struct nouveau_cli *cli = nouveau_cli(file_priv);
ebb945a9 BS	247	struct nouveau_drm *drm = nouveau_drm(dev);
09433f24	248	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
ebb945a9	249	struct nouveau_abi16_chan *chan;
967e7bde	250	struct nvif_device *device;
2a259a3d BS	251	int ret;
2a259a3d BS	252
ebb945a9 BS	253	if (unlikely(!abi16))
ebb945a9 BS	254	return -ENOMEM;
bf7e438b MS	255
	256	if (!drm->channel)
	257	return nouveau_abi16_put(abi16, -ENODEV);
	258
967e7bde	259	device = &abi16->device;
ebb945a9	260
49469800	261	/* hack to allow channel engine type specification on kepler */
967e7bde	262	if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
49469800	263	if (init->fb_ctxdma_handle != ~0)
bbf8906b	264	init->fb_ctxdma_handle = KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR;
49469800 BS	265	else
	266	init->fb_ctxdma_handle = init->tt_ctxdma_handle;
	267
	268	/* allow flips to be executed if this is a graphics channel */
	269	init->tt_ctxdma_handle = 0;
bbf8906b	270	if (init->fb_ctxdma_handle == KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR)
49469800 BS	271	init->tt_ctxdma_handle = 1;
	272	}
	273
	274	if (init->fb_ctxdma_handle == ~0 \|\| init->tt_ctxdma_handle == ~0)
	275	return nouveau_abi16_put(abi16, -EINVAL);
	276
ebb945a9	277	/* allocate "abi16 channel" data and make up a handle for it */
ebb945a9 BS	278	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
	279	if (!chan)
	280	return nouveau_abi16_put(abi16, -ENOMEM);
	281
	282	INIT_LIST_HEAD(&chan->notifiers);
	283	list_add(&chan->head, &abi16->channels);
2a259a3d	284
ebb945a9	285	/* create channel object and initialise dma and fence management */
fcf3f91c	286	ret = nouveau_channel_new(drm, device, init->fb_ctxdma_handle,
ebb945a9	287	init->tt_ctxdma_handle, &chan->chan);
2a259a3d	288	if (ret)
ebb945a9 BS	289	goto done;
ebb945a9 BS	290
fcf3f91c BS	291	init->channel = chan->chan->chid;
fcf3f91c BS	292
967e7bde	293	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
ebb945a9 BS	294	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM \|
	295	NOUVEAU_GEM_DOMAIN_GART;
	296	else
	297	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
2a259a3d	298	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
ebb945a9 BS	299	else
ebb945a9 BS	300	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
2a259a3d	301
967e7bde	302	if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
2a259a3d BS	303	init->subchan[0].handle = 0x00000000;
2a259a3d BS	304	init->subchan[0].grclass = 0x0000;
f45f55c4	305	init->subchan[1].handle = chan->chan->nvsw.handle;
ebb945a9	306	init->subchan[1].grclass = 0x506e;
2a259a3d BS	307	init->nr_subchan = 2;
	308	}
	309
	310	/* Named memory object area */
ebb945a9 BS	311	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
	312	0, 0, &chan->ntfy);
	313	if (ret == 0)
ad76b3f7	314	ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT, false);
ebb945a9 BS	315	if (ret)
	316	goto done;
	317
967e7bde	318	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
0ad72863	319	ret = nouveau_bo_vma_add(chan->ntfy, cli->vm,
ebb945a9 BS	320	&chan->ntfy_vma);
	321	if (ret)
	322	goto done;
	323	}
	324
55fb74ad	325	ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
2a259a3d	326	&init->notifier_handle);
ebb945a9 BS	327	if (ret)
ebb945a9 BS	328	goto done;
2a259a3d	329
be83cd4e	330	ret = nvkm_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
ebb945a9 BS	331	done:
	332	if (ret)
	333	nouveau_abi16_chan_fini(abi16, chan);
	334	return nouveau_abi16_put(abi16, ret);
2a259a3d BS	335	}
2a259a3d BS	336
a4e610b5 BS	337	static struct nouveau_abi16_chan *
	338	nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
	339	{
	340	struct nouveau_abi16_chan *chan;
	341
	342	list_for_each_entry(chan, &abi16->channels, head) {
fcf3f91c	343	if (chan->chan->chid == channel)
a4e610b5 BS	344	return chan;
	345	}
	346
	347	return NULL;
	348	}
ebb945a9	349
2621a416 BS	350	int
	351	nouveau_abi16_usif(struct drm_file file_priv, void data, u32 size)
	352	{
	353	union {
	354	struct nvif_ioctl_v0 v0;
	355	} *args = data;
	356	struct nouveau_abi16_chan *chan;
	357	struct nouveau_abi16 *abi16;
	358	int ret;
	359
	360	if (nvif_unpack(args->v0, 0, 0, true)) {
	361	switch (args->v0.type) {
	362	case NVIF_IOCTL_V0_NEW:
	363	case NVIF_IOCTL_V0_MTHD:
	364	case NVIF_IOCTL_V0_SCLASS:
	365	break;
	366	default:
	367	return -EACCES;
	368	}
	369	} else
	370	return ret;
	371
	372	if (!(abi16 = nouveau_abi16(file_priv)))
	373	return -ENOMEM;
	374
	375	if (args->v0.token != ~0ULL) {
	376	if (!(chan = nouveau_abi16_chan(abi16, args->v0.token)))
	377	return -EINVAL;
	378	args->v0.object = nvif_handle(&chan->chan->user);
	379	args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
	380	return 0;
	381	}
	382
	383	args->v0.object = nvif_handle(&abi16->device.object);
	384	args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
	385	return 0;
	386	}
	387
2a259a3d BS	388	int
	389	nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
	390	{
	391	struct drm_nouveau_channel_free *req = data;
09433f24	392	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
ebb945a9	393	struct nouveau_abi16_chan *chan;
2a259a3d	394
ebb945a9 BS	395	if (unlikely(!abi16))
ebb945a9 BS	396	return -ENOMEM;
2a259a3d	397
a4e610b5 BS	398	chan = nouveau_abi16_chan(abi16, req->channel);
	399	if (!chan)
	400	return nouveau_abi16_put(abi16, -ENOENT);
	401	nouveau_abi16_chan_fini(abi16, chan);
	402	return nouveau_abi16_put(abi16, 0);
2a259a3d BS	403	}
	404
	405	int
	406	nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
	407	{
	408	struct drm_nouveau_grobj_alloc *init = data;
09433f24	409	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
a01ca78c BS	410	struct nouveau_abi16_chan *chan;
a01ca78c BS	411	struct nouveau_abi16_ntfy *ntfy;
a4e610b5	412	struct nvif_client *client;
41a63406	413	struct nvif_sclass *sclass;
f58ddf95 BS	414	s32 oclass = 0;
f58ddf95 BS	415	int ret, i;
2a259a3d	416
ebb945a9 BS	417	if (unlikely(!abi16))
	418	return -ENOMEM;
	419
2a259a3d	420	if (init->handle == ~0)
ebb945a9	421	return nouveau_abi16_put(abi16, -EINVAL);
a01ca78c	422	client = abi16->device.object.client;
2a259a3d	423
a01ca78c BS	424	chan = nouveau_abi16_chan(abi16, init->channel);
	425	if (!chan)
	426	return nouveau_abi16_put(abi16, -ENOENT);
	427
41a63406	428	ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
f58ddf95 BS	429	if (ret < 0)
	430	return nouveau_abi16_put(abi16, ret);
	431
	432	if ((init->class & 0x00ff) == 0x006e) {
	433	/* nvsw: compatibility with older 0x6e class identifier /
	434	for (i = 0; !oclass && i < ret; i++) {
41a63406	435	switch (sclass[i].oclass) {
f58ddf95 BS	436	case NVIF_IOCTL_NEW_V0_SW_NV04:
	437	case NVIF_IOCTL_NEW_V0_SW_NV10:
	438	case NVIF_IOCTL_NEW_V0_SW_NV50:
	439	case NVIF_IOCTL_NEW_V0_SW_GF100:
41a63406	440	oclass = sclass[i].oclass;
f58ddf95 BS	441	break;
	442	default:
	443	break;
	444	}
	445	}
	446	} else
	447	if ((init->class & 0x00ff) == 0x00b1) {
	448	/* msvld: compatibility with incorrect version exposure */
	449	for (i = 0; i < ret; i++) {
41a63406 BS	450	if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
41a63406 BS	451	oclass = sclass[i].oclass;
f58ddf95 BS	452	break;
	453	}
	454	}
	455	} else
	456	if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
	457	/* mspdec: compatibility with incorrect version exposure */
	458	for (i = 0; i < ret; i++) {
41a63406 BS	459	if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
41a63406 BS	460	oclass = sclass[i].oclass;
f58ddf95 BS	461	break;
	462	}
	463	}
	464	} else
	465	if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
	466	/* msppp: compatibility with incorrect version exposure */
	467	for (i = 0; i < ret; i++) {
41a63406 BS	468	if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
41a63406 BS	469	oclass = sclass[i].oclass;
f58ddf95 BS	470	break;
	471	}
	472	}
	473	} else {
	474	oclass = init->class;
	475	}
	476
41a63406	477	nvif_object_sclass_put(&sclass);
f58ddf95 BS	478	if (!oclass)
	479	return nouveau_abi16_put(abi16, -EINVAL);
	480
a01ca78c BS	481	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
	482	if (!ntfy)
	483	return nouveau_abi16_put(abi16, -ENOMEM);
	484
	485	list_add(&ntfy->head, &chan->notifiers);
	486
	487	client->route = NVDRM_OBJECT_ABI16;
f58ddf95	488	ret = nvif_object_init(&chan->chan->user, init->handle, oclass,
a01ca78c BS	489	NULL, 0, &ntfy->object);
	490	client->route = NVDRM_OBJECT_NVIF;
	491
	492	if (ret)
	493	nouveau_abi16_ntfy_fini(chan, ntfy);
ebb945a9	494	return nouveau_abi16_put(abi16, ret);
2a259a3d BS	495	}
	496
	497	int
	498	nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
	499	{
ebb945a9 BS	500	struct drm_nouveau_notifierobj_alloc *info = data;
ebb945a9 BS	501	struct nouveau_drm *drm = nouveau_drm(dev);
09433f24	502	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
a4e610b5	503	struct nouveau_abi16_chan *chan;
ebb945a9	504	struct nouveau_abi16_ntfy *ntfy;
967e7bde	505	struct nvif_device *device = &abi16->device;
3bdda04f	506	struct nvif_client *client;
a01ca78c	507	struct nv_dma_v0 args = {};
2a259a3d BS	508	int ret;
2a259a3d BS	509
ebb945a9 BS	510	if (unlikely(!abi16))
	511	return -ENOMEM;
	512
2a259a3d	513	/* completely unnecessary for these chipsets... */
967e7bde	514	if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
ebb945a9	515	return nouveau_abi16_put(abi16, -EINVAL);
a01ca78c	516	client = abi16->device.object.client;
2a259a3d	517
a4e610b5	518	chan = nouveau_abi16_chan(abi16, info->channel);
ebb945a9 BS	519	if (!chan)
	520	return nouveau_abi16_put(abi16, -ENOENT);
	521
	522	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
	523	if (!ntfy)
	524	return nouveau_abi16_put(abi16, -ENOMEM);
	525
	526	list_add(&ntfy->head, &chan->notifiers);
ebb945a9	527
be83cd4e BS	528	ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
be83cd4e BS	529	&ntfy->node);
ebb945a9 BS	530	if (ret)
	531	goto done;
	532
a01ca78c BS	533	args.start = ntfy->node->offset;
a01ca78c BS	534	args.limit = ntfy->node->offset + ntfy->node->length - 1;
967e7bde	535	if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
a01ca78c BS	536	args.target = NV_DMA_V0_TARGET_VM;
	537	args.access = NV_DMA_V0_ACCESS_VM;
	538	args.start += chan->ntfy_vma.offset;
	539	args.limit += chan->ntfy_vma.offset;
ebb945a9	540	} else
340b0e7c	541	if (drm->agp.bridge) {
a01ca78c BS	542	args.target = NV_DMA_V0_TARGET_AGP;
	543	args.access = NV_DMA_V0_ACCESS_RDWR;
	544	args.start += drm->agp.base + chan->ntfy->bo.offset;
	545	args.limit += drm->agp.base + chan->ntfy->bo.offset;
ebb945a9	546	} else {
a01ca78c BS	547	args.target = NV_DMA_V0_TARGET_VM;
	548	args.access = NV_DMA_V0_ACCESS_RDWR;
	549	args.start += chan->ntfy->bo.offset;
	550	args.limit += chan->ntfy->bo.offset;
ebb945a9 BS	551	}
ebb945a9 BS	552
a01ca78c BS	553	client->route = NVDRM_OBJECT_ABI16;
	554	client->super = true;
	555	ret = nvif_object_init(&chan->chan->user, info->handle,
	556	NV_DMA_IN_MEMORY, &args, sizeof(args),
	557	&ntfy->object);
3bdda04f	558	client->super = false;
a01ca78c	559	client->route = NVDRM_OBJECT_NVIF;
ebb945a9 BS	560	if (ret)
	561	goto done;
	562
c1ccaa64	563	info->offset = ntfy->node->offset;
ebb945a9 BS	564	done:
	565	if (ret)
	566	nouveau_abi16_ntfy_fini(chan, ntfy);
	567	return nouveau_abi16_put(abi16, ret);
2a259a3d BS	568	}
	569
	570	int
	571	nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
	572	{
ebb945a9	573	struct drm_nouveau_gpuobj_free *fini = data;
09433f24	574	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
a4e610b5	575	struct nouveau_abi16_chan *chan;
ebb945a9	576	struct nouveau_abi16_ntfy *ntfy;
a01ca78c	577	int ret = -ENOENT;
2a259a3d	578
ebb945a9 BS	579	if (unlikely(!abi16))
	580	return -ENOMEM;
	581
a4e610b5	582	chan = nouveau_abi16_chan(abi16, fini->channel);
ebb945a9	583	if (!chan)
a01ca78c	584	return nouveau_abi16_put(abi16, -EINVAL);
2a259a3d	585
ebb945a9 BS	586	/* synchronize with the user channel and destroy the gpu object */
ebb945a9 BS	587	nouveau_channel_idle(chan->chan);
2a259a3d	588
ebb945a9	589	list_for_each_entry(ntfy, &chan->notifiers, head) {
a01ca78c BS	590	if (ntfy->object.handle == fini->handle) {
	591	nouveau_abi16_ntfy_fini(chan, ntfy);
	592	ret = 0;
ebb945a9 BS	593	break;
	594	}
	595	}
	596
a01ca78c	597	return nouveau_abi16_put(abi16, ret);
2a259a3d	598	}