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nouveau: add some checks to the nv04 graph switching code.

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Stephane Marchesin 2007-09-21 22:04:45 +02:00
parent bc5423f168
commit 74c6f2f47a
1 changed files with 26 additions and 1 deletions
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27
shared-core/nv04_graph.c
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@ -352,13 +352,38 @@ void nouveau_nv04_context_switch(struct drm_device *dev)
struct nouveau_channel *next, *last;
int chid;
if (!dev) {
DRM_DEBUG("Invalid drm_device\n");
return;
}
dev_priv = dev->dev_private;
if (!dev_priv) {
DRM_DEBUG("Invalid drm_nouveau_private\n");
return;
}
if (!dev_priv->fifos) {
DRM_DEBUG("Invalid drm_nouveau_private->fifos\n");
return;
}
chid = NV_READ(NV03_PFIFO_CACHE1_PUSH1)&(nouveau_fifo_number(dev)-1);
next = dev_priv->fifos[chid];
if (!next) {
DRM_DEBUG("Invalid next channel\n");
return;
}
chid = (NV_READ(NV04_PGRAPH_CTX_USER) >> 24) & (nouveau_fifo_number(dev)-1);
last = dev_priv->fifos[chid];
DRM_INFO("NV: PGRAPH context switch interrupt channel %x -> %x\n",last->id, next->id);
if (!last) {
DRM_DEBUG("WARNING: Invalid last channel, switch to %x\n",
next->id);
} else {
DRM_INFO("NV: PGRAPH context switch interrupt channel %x -> %x\n",
last->id, next->id);
}
/* NV_WRITE(NV03_PFIFO_CACHES, 0x0);
NV_WRITE(NV04_PFIFO_CACHE0_PULL0, 0x0);