[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 "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"

struct nv04_fence_chan {
	struct nouveau_fence_chan base;
};

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->base.seqno);
		FIRE_RING (chan);
	}
	return ret;
}

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

static u32
nv04_fence_read(struct nouveau_channel *chan)
{
	struct nv04_nvsw_get_ref_v0 args = {};
	WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF,
				 &args, sizeof(args)));
	return args.ref;
}

static void
nv04_fence_context_del(struct nouveau_channel *chan)
{
	struct nv04_fence_chan *fctx = chan->fence;
	nouveau_fence_context_del(&fctx->base);
	chan->fence = NULL;
	nouveau_fence_context_free(&fctx->base);
}

static int
nv04_fence_context_new(struct nouveau_channel *chan)
{
	struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
	if (fctx) {
		nouveau_fence_context_new(chan, &fctx->base);
		fctx->base.emit = nv04_fence_emit;
		fctx->base.sync = nv04_fence_sync;
		fctx->base.read = nv04_fence_read;
		chan->fence = fctx;
		return 0;
	}
	return -ENOMEM;
}

static void
nv04_fence_destroy(struct nouveau_drm *drm)
{
	struct nv04_fence_priv *priv = drm->fence;
	drm->fence = NULL;
	kfree(priv);
}

int
nv04_fence_create(struct nouveau_drm *drm)
{
	struct nv04_fence_priv *priv;

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

	priv->base.dtor = nv04_fence_destroy;
	priv->base.context_new = nv04_fence_context_new;
	priv->base.context_del = nv04_fence_context_del;
	priv->base.contexts = 15;
	priv->base.context_base = fence_context_alloc(priv->base.contexts);
	return 0;
}
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
ebb945a9	25	#include "nouveau_drm.h"
5e120f6e	26	#include "nouveau_dma.h"
5e120f6e BS	27	#include "nouveau_fence.h"
	28
	29	struct nv04_fence_chan {
	30	struct nouveau_fence_chan base;
5e120f6e BS	31	};
	32
	33	struct nv04_fence_priv {
	34	struct nouveau_fence_priv base;
	35	};
	36
	37	static int
	38	nv04_fence_emit(struct nouveau_fence *fence)
	39	{
	40	struct nouveau_channel *chan = fence->channel;
	41	int ret = RING_SPACE(chan, 2);
	42	if (ret == 0) {
	43	BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
29ba89b2	44	OUT_RING (chan, fence->base.seqno);
5e120f6e BS	45	FIRE_RING (chan);
	46	}
	47	return ret;
	48	}
	49
	50	static int
906c033e BS	51	nv04_fence_sync(struct nouveau_fence *fence,
906c033e BS	52	struct nouveau_channel prev, struct nouveau_channel chan)
5e120f6e BS	53	{
	54	return -ENODEV;
	55	}
	56
5e120f6e BS	57	static u32
	58	nv04_fence_read(struct nouveau_channel *chan)
	59	{
cd459e77 BS	60	struct nv04_nvsw_get_ref_v0 args = {};
	61	WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF,
	62	&args, sizeof(args)));
	63	return args.ref;
5e120f6e BS	64	}
	65
	66	static void
e193b1d4	67	nv04_fence_context_del(struct nouveau_channel *chan)
5e120f6e	68	{
e193b1d4	69	struct nv04_fence_chan *fctx = chan->fence;
5e120f6e	70	nouveau_fence_context_del(&fctx->base);
e193b1d4	71	chan->fence = NULL;
15a996bb	72	nouveau_fence_context_free(&fctx->base);
5e120f6e BS	73	}
	74
	75	static int
e193b1d4	76	nv04_fence_context_new(struct nouveau_channel *chan)
5e120f6e BS	77	{
	78	struct nv04_fence_chan fctx = kzalloc(sizeof(fctx), GFP_KERNEL);
	79	if (fctx) {
29ba89b2	80	nouveau_fence_context_new(chan, &fctx->base);
827520ce BS	81	fctx->base.emit = nv04_fence_emit;
	82	fctx->base.sync = nv04_fence_sync;
	83	fctx->base.read = nv04_fence_read;
e193b1d4	84	chan->fence = fctx;
5e120f6e BS	85	return 0;
	86	}
	87	return -ENOMEM;
	88	}
	89
5e120f6e	90	static void
ebb945a9	91	nv04_fence_destroy(struct nouveau_drm *drm)
5e120f6e	92	{
ebb945a9 BS	93	struct nv04_fence_priv *priv = drm->fence;
ebb945a9 BS	94	drm->fence = NULL;
5e120f6e BS	95	kfree(priv);
	96	}
	97
	98	int
ebb945a9	99	nv04_fence_create(struct nouveau_drm *drm)
5e120f6e	100	{
5e120f6e	101	struct nv04_fence_priv *priv;
5e120f6e	102
ebb945a9	103	priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
5e120f6e BS	104	if (!priv)
	105	return -ENOMEM;
	106
e193b1d4 BS	107	priv->base.dtor = nv04_fence_destroy;
	108	priv->base.context_new = nv04_fence_context_new;
	109	priv->base.context_del = nv04_fence_context_del;
29ba89b2 ML	110	priv->base.contexts = 15;
29ba89b2 ML	111	priv->base.context_base = fence_context_alloc(priv->base.contexts);
ebb945a9	112	return 0;
5e120f6e	113	}