nouveau: NV04/NV10/NV20 PGRAPH engtab functions

NV04/NV10 load_context()/save_context() are stubs.  I don't know enough about
how they work to implement them sanely.  The "old" context_switch() code
remains hooked up, so it shouldn't break anything.

NV20 will probably break if load_context() works.  No inital context values
are filled in, so when the first channel is created PGRAPH will probably end
up having its state zeroed.  Some setup from nv20_graph_init() will probably
need to be moved to the per-channel context setup.

1 files changed, 16 insertions, 1 deletions

diff --git a/shared-core/nv04_graph.c b/shared-core/nv04_graph.c
index 0cd4d3b8..1aaae33c 100644
--- a/shared-core/nv04_graph.c
+++ b/shared-core/nv04_graph.c
@@ -336,7 +336,7 @@ void nouveau_nv04_context_switch(drm_device_t *dev)
 	NV_WRITE(NV04_PGRAPH_FIFO,0x1);
 }
 
-int nv04_graph_context_create(drm_device_t *dev, int channel) {
+int nv04_graph_create_context(drm_device_t *dev, int channel) {
 	drm_nouveau_private_t *dev_priv = dev->dev_private;
 	DRM_DEBUG("nv04_graph_context_create %d\n", channel);
 
@@ -351,6 +351,21 @@ int nv04_graph_context_create(drm_device_t *dev, int channel) {
 	return 0;
 }
 
+void nv04_graph_destroy_context(drm_device_t *dev, int channel)
+{
+}
+
+int nv04_graph_load_context(drm_device_t *dev, int channel)
+{
+	DRM_ERROR("stub!\n");
+	return 0;
+}
+
+int nv04_graph_save_context(drm_device_t *dev, int channel)
+{
+	DRM_ERROR("stub!\n");
+	return 0;
+}
 
 int nv04_graph_init(drm_device_t *dev) {
 	drm_nouveau_private_t *dev_priv = dev->dev_private;