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/*
* 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;
}
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