diff options
| -rw-r--r-- | shared-core/nv10_graph.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/shared-core/nv10_graph.c b/shared-core/nv10_graph.c index 53b93758..567ce6a4 100644 --- a/shared-core/nv10_graph.c +++ b/shared-core/nv10_graph.c @@ -578,16 +578,40 @@ int nv10_graph_save_context(struct nouveau_channel *chan) void nouveau_nv10_context_switch(struct drm_device *dev) { - struct drm_nouveau_private *dev_priv = dev->dev_private; + struct drm_nouveau_private *dev_priv; 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(NV10_PGRAPH_CTX_USER) >> 24) & (nouveau_fifo_number(dev)-1); last = dev_priv->fifos[chid]; + if (!last) { + DRM_DEBUG("Invalid last channel\n"); + return; + } + DRM_INFO("NV: PGRAPH context switch interrupt channel %x -> %x\n", last->id, next->id); @@ -607,7 +631,7 @@ void nouveau_nv10_context_switch(struct drm_device *dev) nouveau_wait_for_idle(dev); nv10_graph_load_context(next); - + NV_WRITE(NV10_PGRAPH_CTX_CONTROL, 0x10010100); NV_WRITE(NV10_PGRAPH_CTX_USER, next->id << 24); NV_WRITE(NV10_PGRAPH_FFINTFC_ST2, NV_READ(NV10_PGRAPH_FFINTFC_ST2)&0xCFFFFFFF); |