[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / nouveau / nv50_fifo.c

/*
 * Copyright (C) 2012 Ben Skeggs.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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 "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_fifo.h"
#include "nouveau_ramht.h"
#include "nouveau_vm.h"

struct nv50_fifo_priv {
	struct nouveau_fifo_priv base;
	struct nouveau_gpuobj *playlist[2];
	int cur_playlist;
};

struct nv50_fifo_chan {
	struct nouveau_fifo_chan base;
};

void
nv50_fifo_playlist_update(struct drm_device *dev)
{
	struct nv50_fifo_priv *priv = nv_engine(dev, NVOBJ_ENGINE_FIFO);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_gpuobj *cur;
	int i, p;

	cur = priv->playlist[priv->cur_playlist];
	priv->cur_playlist = !priv->cur_playlist;

	for (i = 0, p = 0; i < priv->base.channels; i++) {
		if (nv_rd32(dev, 0x002600 + (i * 4)) & 0x80000000)
			nv_wo32(cur, p++ * 4, i);
	}

	dev_priv->engine.instmem.flush(dev);

	nv_wr32(dev, 0x0032f4, cur->vinst >> 12);
	nv_wr32(dev, 0x0032ec, p);
	nv_wr32(dev, 0x002500, 0x00000101);
}

static int
nv50_fifo_context_new(struct nouveau_channel *chan, int engine)
{
	struct nv50_fifo_priv *priv = nv_engine(chan->dev, engine);
	struct nv50_fifo_chan *fctx;
	struct drm_device *dev = chan->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	u64 ib_offset = chan->pushbuf_base + chan->dma.ib_base * 4;
	u64 instance = chan->ramin->vinst >> 12;
	unsigned long flags;
	int ret = 0, i;

	fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL);
	if (!fctx)
		return -ENOMEM;
	atomic_inc(&chan->vm->engref[engine]);

	chan->user = ioremap(pci_resource_start(dev->pdev, 0) +
			     NV50_USER(chan->id), PAGE_SIZE);
	if (!chan->user) {
		ret = -ENOMEM;
		goto error;
	}

	for (i = 0; i < 0x100; i += 4)
		nv_wo32(chan->ramin, i, 0x00000000);
	nv_wo32(chan->ramin, 0x3c, 0x403f6078);
	nv_wo32(chan->ramin, 0x40, 0x00000000);
	nv_wo32(chan->ramin, 0x44, 0x01003fff);
	nv_wo32(chan->ramin, 0x48, chan->pushbuf->cinst >> 4);
	nv_wo32(chan->ramin, 0x50, lower_32_bits(ib_offset));
	nv_wo32(chan->ramin, 0x54, upper_32_bits(ib_offset) |
				   drm_order(chan->dma.ib_max + 1) << 16);
	nv_wo32(chan->ramin, 0x60, 0x7fffffff);
	nv_wo32(chan->ramin, 0x78, 0x00000000);
	nv_wo32(chan->ramin, 0x7c, 0x30000001);
	nv_wo32(chan->ramin, 0x80, ((chan->ramht->bits - 9) << 27) |
				   (4 << 24) /* SEARCH_FULL */ |
				   (chan->ramht->gpuobj->cinst >> 4));

	dev_priv->engine.instmem.flush(dev);

	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
	nv_wr32(dev, 0x002600 + (chan->id * 4), 0x80000000 | instance);
	nv50_fifo_playlist_update(dev);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);

error:
	if (ret)
		priv->base.base.context_del(chan, engine);
	return ret;
}

static bool
nv50_fifo_kickoff(struct nouveau_channel *chan)
{
	struct drm_device *dev = chan->dev;
	bool done = true;
	u32 me;

	/* HW bug workaround:
	 *
	 * PFIFO will hang forever if the connected engines don't report
	 * that they've processed the context switch request.
	 *
	 * In order for the kickoff to work, we need to ensure all the
	 * connected engines are in a state where they can answer.
	 *
	 * Newer chipsets don't seem to suffer from this issue, and well,
	 * there's also a "ignore these engines" bitmask reg we can use
	 * if we hit the issue there..
	 */

	/* PME: make sure engine is enabled */
	me = nv_mask(dev, 0x00b860, 0x00000001, 0x00000001);

	/* do the kickoff... */
	nv_wr32(dev, 0x0032fc, chan->ramin->vinst >> 12);
	if (!nv_wait_ne(dev, 0x0032fc, 0xffffffff, 0xffffffff)) {
		NV_INFO(dev, "PFIFO: channel %d unload timeout\n", chan->id);
		done = false;
	}

	/* restore any engine states we changed, and exit */
	nv_wr32(dev, 0x00b860, me);
	return done;
}

static void
nv50_fifo_context_del(struct nouveau_channel *chan, int engine)
{
	struct nv50_fifo_chan *fctx = chan->engctx[engine];
	struct drm_device *dev = chan->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	unsigned long flags;

	/* remove channel from playlist, will context switch if active */
	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
	nv_mask(dev, 0x002600 + (chan->id * 4), 0x80000000, 0x00000000);
	nv50_fifo_playlist_update(dev);

	/* tell any engines on this channel to unload their contexts */
	nv50_fifo_kickoff(chan);

	nv_wr32(dev, 0x002600 + (chan->id * 4), 0x00000000);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);

	/* clean up */
	if (chan->user) {
		iounmap(chan->user);
		chan->user = NULL;
	}

	atomic_dec(&chan->vm->engref[engine]);
	chan->engctx[engine] = NULL;
	kfree(fctx);
}

static int
nv50_fifo_init(struct drm_device *dev, int engine)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	u32 instance;
	int i;

	nv_mask(dev, 0x000200, 0x00000100, 0x00000000);
	nv_mask(dev, 0x000200, 0x00000100, 0x00000100);
	nv_wr32(dev, 0x00250c, 0x6f3cfc34);
	nv_wr32(dev, 0x002044, 0x01003fff);

	nv_wr32(dev, 0x002100, 0xffffffff);
	nv_wr32(dev, 0x002140, 0xffffffff);

	for (i = 0; i < 128; i++) {
		struct nouveau_channel *chan = dev_priv->channels.ptr[i];
		if (chan && chan->engctx[engine])
			instance = 0x80000000 | chan->ramin->vinst >> 12;
		else
			instance = 0x00000000;
		nv_wr32(dev, 0x002600 + (i * 4), instance);
	}

	nv50_fifo_playlist_update(dev);

	nv_wr32(dev, 0x003200, 1);
	nv_wr32(dev, 0x003250, 1);
	nv_wr32(dev, 0x002500, 1);
	return 0;
}

static int
nv50_fifo_fini(struct drm_device *dev, int engine, bool suspend)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv50_fifo_priv *priv = nv_engine(dev, engine);
	int i;

	/* set playlist length to zero, fifo will unload context */
	nv_wr32(dev, 0x0032ec, 0);

	/* tell all connected engines to unload their contexts */
	for (i = 0; i < priv->base.channels; i++) {
		struct nouveau_channel *chan = dev_priv->channels.ptr[i];
		if (chan && !nv50_fifo_kickoff(chan))
			return -EBUSY;
	}

	nv_wr32(dev, 0x002140, 0);
	return 0;
}

void
nv50_fifo_tlb_flush(struct drm_device *dev, int engine)
{
	nv50_vm_flush_engine(dev, 5);
}

void
nv50_fifo_destroy(struct drm_device *dev, int engine)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv50_fifo_priv *priv = nv_engine(dev, engine);

	nouveau_irq_unregister(dev, 8);

	nouveau_gpuobj_ref(NULL, &priv->playlist[0]);
	nouveau_gpuobj_ref(NULL, &priv->playlist[1]);

	dev_priv->eng[engine] = NULL;
	kfree(priv);
}

int
nv50_fifo_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv50_fifo_priv *priv;
	int ret;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->base.base.destroy = nv50_fifo_destroy;
	priv->base.base.init = nv50_fifo_init;
	priv->base.base.fini = nv50_fifo_fini;
	priv->base.base.context_new = nv50_fifo_context_new;
	priv->base.base.context_del = nv50_fifo_context_del;
	priv->base.base.tlb_flush = nv50_fifo_tlb_flush;
	priv->base.channels = 127;
	dev_priv->eng[NVOBJ_ENGINE_FIFO] = &priv->base.base;

	ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000,
				 NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[0]);
	if (ret)
		goto error;

	ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000,
				 NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[1]);
	if (ret)
		goto error;

	nouveau_irq_register(dev, 8, nv04_fifo_isr);
error:
	if (ret)
		priv->base.base.destroy(dev, NVOBJ_ENGINE_FIFO);
	return ret;
}
Commit	Line	Data
6ee73861	1	/*
c420b2dc	2	* Copyright (C) 2012 Ben Skeggs.
6ee73861 BS	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining
	6	* a copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sublicense, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the
	14	* next paragraph) shall be included in all copies or substantial
	15	* portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	21	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	22	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	23	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	24	*
	25	*/
	26
	27	#include "drmP.h"
	28	#include "drm.h"
	29	#include "nouveau_drv.h"
c420b2dc	30	#include "nouveau_fifo.h"
a8eaebc6	31	#include "nouveau_ramht.h"
a11c3198	32	#include "nouveau_vm.h"
6ee73861	33
c420b2dc BS	34	struct nv50_fifo_priv {
	35	struct nouveau_fifo_priv base;
	36	struct nouveau_gpuobj *playlist[2];
	37	int cur_playlist;
	38	};
	39
	40	struct nv50_fifo_chan {
	41	struct nouveau_fifo_chan base;
	42	};
	43
	44	void
ac94a343	45	nv50_fifo_playlist_update(struct drm_device *dev)
6ee73861	46	{
c420b2dc	47	struct nv50_fifo_priv *priv = nv_engine(dev, NVOBJ_ENGINE_FIFO);
6ee73861	48	struct drm_nouveau_private *dev_priv = dev->dev_private;
a8eaebc6	49	struct nouveau_gpuobj *cur;
694931d2	50	int i, p;
6ee73861	51
c420b2dc BS	52	cur = priv->playlist[priv->cur_playlist];
c420b2dc BS	53	priv->cur_playlist = !priv->cur_playlist;
6ee73861	54
c420b2dc	55	for (i = 0, p = 0; i < priv->base.channels; i++) {
694931d2 BS	56	if (nv_rd32(dev, 0x002600 + (i * 4)) & 0x80000000)
694931d2 BS	57	nv_wo32(cur, p++ * 4, i);
6ee73861	58	}
694931d2	59
f56cb86f	60	dev_priv->engine.instmem.flush(dev);
6ee73861	61
c420b2dc BS	62	nv_wr32(dev, 0x0032f4, cur->vinst >> 12);
	63	nv_wr32(dev, 0x0032ec, p);
	64	nv_wr32(dev, 0x002500, 0x00000101);
6ee73861 BS	65	}
6ee73861 BS	66
c420b2dc BS	67	static int
c420b2dc BS	68	nv50_fifo_context_new(struct nouveau_channel *chan, int engine)
6ee73861	69	{
c420b2dc BS	70	struct nv50_fifo_priv *priv = nv_engine(chan->dev, engine);
c420b2dc BS	71	struct nv50_fifo_chan *fctx;
6ee73861 BS	72	struct drm_device *dev = chan->dev;
6ee73861 BS	73	struct drm_nouveau_private *dev_priv = dev->dev_private;
c420b2dc BS	74	u64 ib_offset = chan->pushbuf_base + chan->dma.ib_base * 4;
c420b2dc BS	75	u64 instance = chan->ramin->vinst >> 12;
ff9e5279	76	unsigned long flags;
c420b2dc	77	int ret = 0, i;
6ee73861	78
c420b2dc BS	79	fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL);
	80	if (!fctx)
	81	return -ENOMEM;
	82	atomic_inc(&chan->vm->engref[engine]);
6ee73861	83
d908175c BS	84	chan->user = ioremap(pci_resource_start(dev->pdev, 0) +
d908175c BS	85	NV50_USER(chan->id), PAGE_SIZE);
c420b2dc BS	86	if (!chan->user) {
	87	ret = -ENOMEM;
	88	goto error;
6ee73861 BS	89	}
6ee73861 BS	90
c420b2dc BS	91	for (i = 0; i < 0x100; i += 4)
	92	nv_wo32(chan->ramin, i, 0x00000000);
	93	nv_wo32(chan->ramin, 0x3c, 0x403f6078);
	94	nv_wo32(chan->ramin, 0x40, 0x00000000);
	95	nv_wo32(chan->ramin, 0x44, 0x01003fff);
	96	nv_wo32(chan->ramin, 0x48, chan->pushbuf->cinst >> 4);
	97	nv_wo32(chan->ramin, 0x50, lower_32_bits(ib_offset));
	98	nv_wo32(chan->ramin, 0x54, upper_32_bits(ib_offset) \|
	99	drm_order(chan->dma.ib_max + 1) << 16);
	100	nv_wo32(chan->ramin, 0x60, 0x7fffffff);
	101	nv_wo32(chan->ramin, 0x78, 0x00000000);
	102	nv_wo32(chan->ramin, 0x7c, 0x30000001);
	103	nv_wo32(chan->ramin, 0x80, ((chan->ramht->bits - 9) << 27) \|
	104	(4 << 24) /* SEARCH_FULL */ \|
	105	(chan->ramht->gpuobj->cinst >> 4));
	106
f56cb86f	107	dev_priv->engine.instmem.flush(dev);
6ee73861	108
c420b2dc BS	109	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
c420b2dc BS	110	nv_wr32(dev, 0x002600 + (chan->id * 4), 0x80000000 \| instance);
ac94a343	111	nv50_fifo_playlist_update(dev);
ff9e5279	112	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
c420b2dc BS	113
	114	error:
	115	if (ret)
	116	priv->base.base.context_del(chan, engine);
	117	return ret;
6ee73861 BS	118	}
6ee73861 BS	119
03bd6efa	120	static bool
c420b2dc	121	nv50_fifo_kickoff(struct nouveau_channel *chan)
03bd6efa	122	{
c420b2dc BS	123	struct drm_device *dev = chan->dev;
	124	bool done = true;
	125	u32 me;
	126
	127	/* HW bug workaround:
	128	*
	129	* PFIFO will hang forever if the connected engines don't report
	130	* that they've processed the context switch request.
	131	*
	132	* In order for the kickoff to work, we need to ensure all the
	133	* connected engines are in a state where they can answer.
	134	*
	135	* Newer chipsets don't seem to suffer from this issue, and well,
	136	* there's also a "ignore these engines" bitmask reg we can use
	137	* if we hit the issue there..
	138	*/
	139
	140	/* PME: make sure engine is enabled */
	141	me = nv_mask(dev, 0x00b860, 0x00000001, 0x00000001);
	142
	143	/* do the kickoff... */
	144	nv_wr32(dev, 0x0032fc, chan->ramin->vinst >> 12);
	145	if (!nv_wait_ne(dev, 0x0032fc, 0xffffffff, 0xffffffff)) {
	146	NV_INFO(dev, "PFIFO: channel %d unload timeout\n", chan->id);
	147	done = false;
03bd6efa BS	148	}
03bd6efa BS	149
c420b2dc BS	150	/* restore any engine states we changed, and exit */
	151	nv_wr32(dev, 0x00b860, me);
	152	return done;
03bd6efa BS	153	}
03bd6efa BS	154
c420b2dc BS	155	static void
c420b2dc BS	156	nv50_fifo_context_del(struct nouveau_channel *chan, int engine)
6ee73861	157	{
c420b2dc	158	struct nv50_fifo_chan *fctx = chan->engctx[engine];
6ee73861	159	struct drm_device *dev = chan->dev;
3945e475	160	struct drm_nouveau_private *dev_priv = dev->dev_private;
3945e475	161	unsigned long flags;
6ee73861	162
03bd6efa	163	/* remove channel from playlist, will context switch if active */
3945e475	164	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
03bd6efa	165	nv_mask(dev, 0x002600 + (chan->id * 4), 0x80000000, 0x00000000);
ac94a343	166	nv50_fifo_playlist_update(dev);
a87ff62a	167
03bd6efa	168	/* tell any engines on this channel to unload their contexts */
c420b2dc	169	nv50_fifo_kickoff(chan);
03bd6efa BS	170
03bd6efa BS	171	nv_wr32(dev, 0x002600 + (chan->id * 4), 0x00000000);
3945e475 FJ	172	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
3945e475 FJ	173
03bd6efa	174	/* clean up */
d908175c BS	175	if (chan->user) {
	176	iounmap(chan->user);
	177	chan->user = NULL;
	178	}
03bd6efa	179
c420b2dc BS	180	atomic_dec(&chan->vm->engref[engine]);
	181	chan->engctx[engine] = NULL;
	182	kfree(fctx);
6ee73861 BS	183	}
6ee73861 BS	184
c420b2dc BS	185	static int
c420b2dc BS	186	nv50_fifo_init(struct drm_device *dev, int engine)
6ee73861	187	{
c420b2dc BS	188	struct drm_nouveau_private *dev_priv = dev->dev_private;
	189	u32 instance;
	190	int i;
	191
	192	nv_mask(dev, 0x000200, 0x00000100, 0x00000000);
	193	nv_mask(dev, 0x000200, 0x00000100, 0x00000100);
	194	nv_wr32(dev, 0x00250c, 0x6f3cfc34);
	195	nv_wr32(dev, 0x002044, 0x01003fff);
	196
	197	nv_wr32(dev, 0x002100, 0xffffffff);
	198	nv_wr32(dev, 0x002140, 0xffffffff);
	199
	200	for (i = 0; i < 128; i++) {
	201	struct nouveau_channel *chan = dev_priv->channels.ptr[i];
	202	if (chan && chan->engctx[engine])
	203	instance = 0x80000000 \| chan->ramin->vinst >> 12;
	204	else
	205	instance = 0x00000000;
	206	nv_wr32(dev, 0x002600 + (i * 4), instance);
	207	}
	208
	209	nv50_fifo_playlist_update(dev);
	210
	211	nv_wr32(dev, 0x003200, 1);
	212	nv_wr32(dev, 0x003250, 1);
	213	nv_wr32(dev, 0x002500, 1);
6ee73861 BS	214	return 0;
	215	}
	216
c420b2dc BS	217	static int
c420b2dc BS	218	nv50_fifo_fini(struct drm_device *dev, int engine, bool suspend)
6ee73861 BS	219	{
6ee73861 BS	220	struct drm_nouveau_private *dev_priv = dev->dev_private;
c420b2dc	221	struct nv50_fifo_priv *priv = nv_engine(dev, engine);
03bd6efa	222	int i;
6ee73861	223
03bd6efa BS	224	/* set playlist length to zero, fifo will unload context */
	225	nv_wr32(dev, 0x0032ec, 0);
	226
	227	/* tell all connected engines to unload their contexts */
c420b2dc	228	for (i = 0; i < priv->base.channels; i++) {
03bd6efa	229	struct nouveau_channel *chan = dev_priv->channels.ptr[i];
c420b2dc	230	if (chan && !nv50_fifo_kickoff(chan))
03bd6efa	231	return -EBUSY;
6ee73861 BS	232	}
6ee73861 BS	233
c420b2dc	234	nv_wr32(dev, 0x002140, 0);
6ee73861 BS	235	return 0;
	236	}
	237
56ac7475	238	void
c420b2dc	239	nv50_fifo_tlb_flush(struct drm_device *dev, int engine)
56ac7475	240	{
a11c3198	241	nv50_vm_flush_engine(dev, 5);
56ac7475	242	}
c420b2dc BS	243
	244	void
	245	nv50_fifo_destroy(struct drm_device *dev, int engine)
	246	{
	247	struct drm_nouveau_private *dev_priv = dev->dev_private;
	248	struct nv50_fifo_priv *priv = nv_engine(dev, engine);
	249
	250	nouveau_irq_unregister(dev, 8);
	251
	252	nouveau_gpuobj_ref(NULL, &priv->playlist[0]);
	253	nouveau_gpuobj_ref(NULL, &priv->playlist[1]);
	254
	255	dev_priv->eng[engine] = NULL;
	256	kfree(priv);
	257	}
	258
	259	int
	260	nv50_fifo_create(struct drm_device *dev)
	261	{
	262	struct drm_nouveau_private *dev_priv = dev->dev_private;
	263	struct nv50_fifo_priv *priv;
	264	int ret;
	265
	266	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	267	if (!priv)
	268	return -ENOMEM;
	269
	270	priv->base.base.destroy = nv50_fifo_destroy;
	271	priv->base.base.init = nv50_fifo_init;
	272	priv->base.base.fini = nv50_fifo_fini;
	273	priv->base.base.context_new = nv50_fifo_context_new;
	274	priv->base.base.context_del = nv50_fifo_context_del;
	275	priv->base.base.tlb_flush = nv50_fifo_tlb_flush;
	276	priv->base.channels = 127;
	277	dev_priv->eng[NVOBJ_ENGINE_FIFO] = &priv->base.base;
	278
	279	ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000,
	280	NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[0]);
	281	if (ret)
	282	goto error;
	283
	284	ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000,
	285	NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[1]);
	286	if (ret)
	287	goto error;
	288
	289	nouveau_irq_register(dev, 8, nv04_fifo_isr);
	290	error:
	291	if (ret)
	292	priv->base.base.destroy(dev, NVOBJ_ENGINE_FIFO);
	293	return ret;
	294	}