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.
26 #include "nouveau_drv.h"
27 #include "nouveau_dma.h"
28 #include "nouveau_ramht.h"
29 #include "nouveau_fence.h"
31 struct nv04_fence_chan {
32 struct nouveau_fence_chan base;
36 struct nv04_fence_priv {
37 struct nouveau_fence_priv base;
41 nv04_fence_emit(struct nouveau_fence *fence)
43 struct nouveau_channel *chan = fence->channel;
44 int ret = RING_SPACE(chan, 2);
46 BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
47 OUT_RING (chan, fence->sequence);
54 nv04_fence_sync(struct nouveau_fence *fence,
55 struct nouveau_channel *prev, struct nouveau_channel *chan)
61 nv04_fence_mthd(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
63 struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
64 atomic_set(&fctx->sequence, data);
69 nv04_fence_read(struct nouveau_channel *chan)
71 struct nv04_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE];
72 return atomic_read(&fctx->sequence);
76 nv04_fence_context_del(struct nouveau_channel *chan, int engine)
78 struct nv04_fence_chan *fctx = chan->engctx[engine];
79 nouveau_fence_context_del(&fctx->base);
80 chan->engctx[engine] = NULL;
85 nv04_fence_context_new(struct nouveau_channel *chan, int engine)
87 struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
89 nouveau_fence_context_new(&fctx->base);
90 atomic_set(&fctx->sequence, 0);
91 chan->engctx[engine] = fctx;
98 nv04_fence_fini(struct drm_device *dev, int engine, bool suspend)
104 nv04_fence_init(struct drm_device *dev, int engine)
110 nv04_fence_destroy(struct drm_device *dev, int engine)
112 struct drm_nouveau_private *dev_priv = dev->dev_private;
113 struct nv04_fence_priv *priv = nv_engine(dev, engine);
115 dev_priv->eng[engine] = NULL;
120 nv04_fence_create(struct drm_device *dev)
122 struct drm_nouveau_private *dev_priv = dev->dev_private;
123 struct nv04_fence_priv *priv;
126 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
130 priv->base.engine.destroy = nv04_fence_destroy;
131 priv->base.engine.init = nv04_fence_init;
132 priv->base.engine.fini = nv04_fence_fini;
133 priv->base.engine.context_new = nv04_fence_context_new;
134 priv->base.engine.context_del = nv04_fence_context_del;
135 priv->base.emit = nv04_fence_emit;
136 priv->base.sync = nv04_fence_sync;
137 priv->base.read = nv04_fence_read;
138 dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine;