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/nv10_graph.c b/shared-core/nv10_graph.c
index fb189709..d1fe0a54 100644
--- a/shared-core/nv10_graph.c
+++ b/shared-core/nv10_graph.c
@@ -611,7 +611,7 @@ void nouveau_nv10_context_switch(drm_device_t *dev)
 	if (offset > 0) \
 		fifo->pgraph_ctx[offset] = val; \
 	} while (0)
-int nv10_graph_context_create(drm_device_t *dev, int channel) {
+int nv10_graph_create_context(drm_device_t *dev, int channel) {
 	drm_nouveau_private_t *dev_priv = dev->dev_private;
 	struct nouveau_fifo *fifo = &dev_priv->fifos[channel];
 	uint32_t tmp, vramsz;
@@ -663,6 +663,21 @@ int nv10_graph_context_create(drm_device_t *dev, int channel) {
 	return 0;
 }
 
+void nv10_graph_destroy_context(drm_device_t *dev, int channel)
+{
+}
+
+int nv10_graph_load_context(drm_device_t *dev, int channel)
+{
+	DRM_ERROR("stub!\n");
+	return 0;
+}
+
+int nv10_graph_save_context(drm_device_t *dev, int channel)
+{
+	DRM_ERROR("stub!\n");
+	return 0;
+}
 
 int nv10_graph_init(drm_device_t *dev) {
 	drm_nouveau_private_t *dev_priv = dev->dev_private;