[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / nouveau / nv04_fence.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.
 *
 * Authors: Ben Skeggs
 */

#include <drm/drmP.h>
#include "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_ramht.h"
#include "nouveau_fence.h"

struct nv04_fence_chan {
	struct nouveau_fence_chan base;
	atomic_t sequence;
};

struct nv04_fence_priv {
	struct nouveau_fence_priv base;
};

static int
nv04_fence_emit(struct nouveau_fence *fence)
{
	struct nouveau_channel *chan = fence->channel;
	int ret = RING_SPACE(chan, 2);
	if (ret == 0) {
		BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
		OUT_RING  (chan, fence->sequence);
		FIRE_RING (chan);
	}
	return ret;
}

static int
nv04_fence_sync(struct nouveau_fence *fence,
		struct nouveau_channel *prev, struct nouveau_channel *chan)
{
	return -ENODEV;
}

int
nv04_fence_mthd(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
{
	struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
	atomic_set(&fctx->sequence, data);
	return 0;
}

static u32
nv04_fence_read(struct nouveau_channel *chan)
{
	struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
	return atomic_read(&fctx->sequence);
}

static void
nv04_fence_context_del(struct nouveau_channel *chan, int engine)
{
	struct nv04_fence_chan *fctx = chan->engctx[engine];
	nouveau_fence_context_del(&fctx->base);
	chan->engctx[engine] = NULL;
	kfree(fctx);
}

static int
nv04_fence_context_new(struct nouveau_channel *chan, int engine)
{
	struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
	if (fctx) {
		nouveau_fence_context_new(&fctx->base);
		atomic_set(&fctx->sequence, 0);
		chan->engctx[engine] = fctx;
		return 0;
	}
	return -ENOMEM;
}

static int
nv04_fence_fini(struct drm_device *dev, int engine, bool suspend)
{
	return 0;
}

static int
nv04_fence_init(struct drm_device *dev, int engine)
{
	return 0;
}

static void
nv04_fence_destroy(struct drm_device *dev, int engine)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_fence_priv *priv = nv_engine(dev, engine);

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

int
nv04_fence_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_fence_priv *priv;
	int ret;

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

	priv->base.engine.destroy = nv04_fence_destroy;
	priv->base.engine.init = nv04_fence_init;
	priv->base.engine.fini = nv04_fence_fini;
	priv->base.engine.context_new = nv04_fence_context_new;
	priv->base.engine.context_del = nv04_fence_context_del;
	priv->base.emit = nv04_fence_emit;
	priv->base.sync = nv04_fence_sync;
	priv->base.read = nv04_fence_read;
	dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine;
	return ret;
}
Commit	Line	Data
5e120f6e 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	* Authors: Ben Skeggs
	23	*/
	24
760285e7	25	#include <drm/drmP.h>
5e120f6e BS	26	#include "nouveau_drv.h"
	27	#include "nouveau_dma.h"
	28	#include "nouveau_ramht.h"
	29	#include "nouveau_fence.h"
	30
	31	struct nv04_fence_chan {
	32	struct nouveau_fence_chan base;
	33	atomic_t sequence;
	34	};
	35
	36	struct nv04_fence_priv {
	37	struct nouveau_fence_priv base;
	38	};
	39
	40	static int
	41	nv04_fence_emit(struct nouveau_fence *fence)
	42	{
	43	struct nouveau_channel *chan = fence->channel;
	44	int ret = RING_SPACE(chan, 2);
	45	if (ret == 0) {
	46	BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
	47	OUT_RING (chan, fence->sequence);
	48	FIRE_RING (chan);
	49	}
	50	return ret;
	51	}
	52
	53	static int
906c033e BS	54	nv04_fence_sync(struct nouveau_fence *fence,
906c033e BS	55	struct nouveau_channel prev, struct nouveau_channel chan)
5e120f6e BS	56	{
	57	return -ENODEV;
	58	}
	59
	60	int
	61	nv04_fence_mthd(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
	62	{
	63	struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
	64	atomic_set(&fctx->sequence, data);
	65	return 0;
	66	}
	67
	68	static u32
	69	nv04_fence_read(struct nouveau_channel *chan)
	70	{
	71	struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
	72	return atomic_read(&fctx->sequence);
	73	}
	74
	75	static void
	76	nv04_fence_context_del(struct nouveau_channel *chan, int engine)
	77	{
	78	struct nv04_fence_chan *fctx = chan->engctx[engine];
	79	nouveau_fence_context_del(&fctx->base);
	80	chan->engctx[engine] = NULL;
	81	kfree(fctx);
	82	}
	83
	84	static int
	85	nv04_fence_context_new(struct nouveau_channel *chan, int engine)
	86	{
	87	struct nv04_fence_chan fctx = kzalloc(sizeof(fctx), GFP_KERNEL);
	88	if (fctx) {
	89	nouveau_fence_context_new(&fctx->base);
	90	atomic_set(&fctx->sequence, 0);
	91	chan->engctx[engine] = fctx;
	92	return 0;
	93	}
	94	return -ENOMEM;
	95	}
	96
	97	static int
	98	nv04_fence_fini(struct drm_device *dev, int engine, bool suspend)
	99	{
	100	return 0;
	101	}
	102
	103	static int
	104	nv04_fence_init(struct drm_device *dev, int engine)
	105	{
	106	return 0;
	107	}
	108
	109	static void
	110	nv04_fence_destroy(struct drm_device *dev, int engine)
	111	{
	112	struct drm_nouveau_private *dev_priv = dev->dev_private;
	113	struct nv04_fence_priv *priv = nv_engine(dev, engine);
	114
	115	dev_priv->eng[engine] = NULL;
	116	kfree(priv);
	117	}
	118
	119	int
120	nv04_fence_create(struct drm_device *dev)
121	{
122	struct drm_nouveau_private *dev_priv = dev->dev_private;
123	struct nv04_fence_priv *priv;
124	int ret;
125
126	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
127	if (!priv)
128	return -ENOMEM;
129
130	priv->base.engine.destroy = nv04_fence_destroy;
131	priv->base.engine.init = nv04_fence_init;
132	priv->base.engine.fini = nv04_fence_fini;
133	priv->base.engine.context_new = nv04_fence_context_new;
134	priv->base.engine.context_del = nv04_fence_context_del;
135	priv->base.emit = nv04_fence_emit;
136	priv->base.sync = nv04_fence_sync;
137	priv->base.read = nv04_fence_read;
138	dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine;
139	return ret;
140	}