Release 4.7 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;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 65 | 95.59% | 1 | 50.00% | 
| maarten lankhorst | maarten lankhorst | 3 | 4.41% | 1 | 50.00% | 
 | Total | 68 | 100.00% | 2 | 100.00% | 
static int
nv04_fence_sync(struct nouveau_fence *fence,
		struct nouveau_channel *prev, struct nouveau_channel *chan)
{
	return -ENODEV;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 25 | 100.00% | 2 | 100.00% | 
 | Total | 25 | 100.00% | 2 | 100.00% | 
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;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 43 | 100.00% | 4 | 100.00% | 
 | Total | 43 | 100.00% | 4 | 100.00% | 
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);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 38 | 90.48% | 2 | 66.67% | 
| maarten lankhorst | maarten lankhorst | 4 | 9.52% | 1 | 33.33% | 
 | Total | 42 | 100.00% | 3 | 100.00% | 
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;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 78 | 97.50% | 3 | 75.00% | 
| maarten lankhorst | maarten lankhorst | 2 | 2.50% | 1 | 25.00% | 
 | Total | 80 | 100.00% | 4 | 100.00% | 
static void
nv04_fence_destroy(struct nouveau_drm *drm)
{
	struct nv04_fence_priv *priv = drm->fence;
	drm->fence = NULL;
	kfree(priv);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 31 | 100.00% | 3 | 100.00% | 
 | Total | 31 | 100.00% | 3 | 100.00% | 
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;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 68 | 74.73% | 3 | 75.00% | 
| maarten lankhorst | maarten lankhorst | 23 | 25.27% | 1 | 25.00% | 
 | Total | 91 | 100.00% | 4 | 100.00% | 
Overall Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| ben skeggs | ben skeggs | 379 | 92.21% | 10 | 83.33% | 
| maarten lankhorst | maarten lankhorst | 32 | 7.79% | 2 | 16.67% | 
 | Total | 411 | 100.00% | 12 | 100.00% | 
  
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