2 * Copyright 2012 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
25 #include <engine/fifo.h>
27 #include "nouveau_drm.h"
28 #include "nouveau_dma.h"
29 #include "nouveau_fence.h"
31 struct nv04_fence_chan {
32 struct nouveau_fence_chan base;
35 struct nv04_fence_priv {
36 struct nouveau_fence_priv base;
40 nv04_fence_emit(struct nouveau_fence *fence)
42 struct nouveau_channel *chan = fence->channel;
43 int ret = RING_SPACE(chan, 2);
45 BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
46 OUT_RING (chan, fence->sequence);
53 nv04_fence_sync(struct nouveau_fence *fence,
54 struct nouveau_channel *prev, struct nouveau_channel *chan)
60 nv04_fence_read(struct nouveau_channel *chan)
62 struct nouveau_fifo_chan *fifo = (void *)chan->object;
63 return atomic_read(&fifo->refcnt);
67 nv04_fence_context_del(struct nouveau_channel *chan)
69 struct nv04_fence_chan *fctx = chan->fence;
70 nouveau_fence_context_del(&fctx->base);
76 nv04_fence_context_new(struct nouveau_channel *chan)
78 struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
80 nouveau_fence_context_new(&fctx->base);
81 fctx->base.emit = nv04_fence_emit;
82 fctx->base.sync = nv04_fence_sync;
83 fctx->base.read = nv04_fence_read;
91 nv04_fence_destroy(struct nouveau_drm *drm)
93 struct nv04_fence_priv *priv = drm->fence;
99 nv04_fence_create(struct nouveau_drm *drm)
101 struct nv04_fence_priv *priv;
103 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
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;