[mirror_ubuntu-focal-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_drv.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"

#include <nvif/if0004.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
4dc28134	25	#include "nouveau_drv.h"
5e120f6e	26	#include "nouveau_dma.h"
5e120f6e BS	27	#include "nouveau_fence.h"
5e120f6e BS	28
538b269b BS	29	#include <nvif/if0004.h>
538b269b BS	30
5e120f6e BS	31	struct nv04_fence_chan {
5e120f6e BS	32	struct nouveau_fence_chan base;
5e120f6e BS	33	};
	34
	35	struct nv04_fence_priv {
	36	struct nouveau_fence_priv base;
	37	};
	38
	39	static int
	40	nv04_fence_emit(struct nouveau_fence *fence)
	41	{
	42	struct nouveau_channel *chan = fence->channel;
	43	int ret = RING_SPACE(chan, 2);
	44	if (ret == 0) {
	45	BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
29ba89b2	46	OUT_RING (chan, fence->base.seqno);
5e120f6e BS	47	FIRE_RING (chan);
	48	}
	49	return ret;
	50	}
	51
	52	static int
906c033e BS	53	nv04_fence_sync(struct nouveau_fence *fence,
906c033e BS	54	struct nouveau_channel prev, struct nouveau_channel chan)
5e120f6e BS	55	{
	56	return -ENODEV;
	57	}
	58
5e120f6e BS	59	static u32
	60	nv04_fence_read(struct nouveau_channel *chan)
	61	{
cd459e77 BS	62	struct nv04_nvsw_get_ref_v0 args = {};
	63	WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF,
	64	&args, sizeof(args)));
	65	return args.ref;
5e120f6e BS	66	}
	67
	68	static void
e193b1d4	69	nv04_fence_context_del(struct nouveau_channel *chan)
5e120f6e	70	{
e193b1d4	71	struct nv04_fence_chan *fctx = chan->fence;
5e120f6e	72	nouveau_fence_context_del(&fctx->base);
e193b1d4	73	chan->fence = NULL;
15a996bb	74	nouveau_fence_context_free(&fctx->base);
5e120f6e BS	75	}
	76
	77	static int
e193b1d4	78	nv04_fence_context_new(struct nouveau_channel *chan)
5e120f6e BS	79	{
	80	struct nv04_fence_chan fctx = kzalloc(sizeof(fctx), GFP_KERNEL);
	81	if (fctx) {
29ba89b2	82	nouveau_fence_context_new(chan, &fctx->base);
827520ce BS	83	fctx->base.emit = nv04_fence_emit;
	84	fctx->base.sync = nv04_fence_sync;
	85	fctx->base.read = nv04_fence_read;
e193b1d4	86	chan->fence = fctx;
5e120f6e BS	87	return 0;
	88	}
	89	return -ENOMEM;
	90	}
	91
5e120f6e	92	static void
ebb945a9	93	nv04_fence_destroy(struct nouveau_drm *drm)
5e120f6e	94	{
ebb945a9 BS	95	struct nv04_fence_priv *priv = drm->fence;
ebb945a9 BS	96	drm->fence = NULL;
5e120f6e BS	97	kfree(priv);
	98	}
	99
	100	int
ebb945a9	101	nv04_fence_create(struct nouveau_drm *drm)
5e120f6e	102	{
5e120f6e	103	struct nv04_fence_priv *priv;
5e120f6e	104
ebb945a9	105	priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
5e120f6e BS	106	if (!priv)
	107	return -ENOMEM;
	108
e193b1d4 BS	109	priv->base.dtor = nv04_fence_destroy;
	110	priv->base.context_new = nv04_fence_context_new;
	111	priv->base.context_del = nv04_fence_context_del;
29ba89b2 ML	112	priv->base.contexts = 15;
29ba89b2 ML	113	priv->base.context_base = fence_context_alloc(priv->base.contexts);
ebb945a9	114	return 0;
5e120f6e	115	}