nouveau: NV3X PGRAPH engtab functions

1 files changed, 65 insertions, 1 deletions

diff --git a/shared-core/nv30_graph.c b/shared-core/nv30_graph.c
index f4faadd8..9f064a0a 100644
--- a/shared-core/nv30_graph.c
+++ b/shared-core/nv30_graph.c
@@ -100,7 +100,7 @@ static void nv30_graph_context_init(drm_device_t *dev, struct mem_block *ctx)
 }
 
 
-int nv30_graph_context_create(drm_device_t *dev, int channel)
+int nv30_graph_create_context(drm_device_t *dev, int channel)
 {
 	drm_nouveau_private_t *dev_priv =
 		(drm_nouveau_private_t *)dev->dev_private;
@@ -132,6 +132,70 @@ int nv30_graph_context_create(drm_device_t *dev, int channel)
 	return 0;
 }
 
+void nv30_graph_destroy_context(drm_device_t *dev, int channel)
+{
+	drm_nouveau_private_t *dev_priv =
+		(drm_nouveau_private_t *)dev->dev_private;
+	struct nouveau_fifo *chan = &dev_priv->fifos[channel];
+
+	if (chan->ramin_grctx) {
+		nouveau_instmem_free(dev, chan->ramin_grctx);
+		chan->ramin_grctx = NULL;
+	}
+
+	INSTANCE_WR(dev_priv->ctx_table, channel, 0);
+}
+
+static int
+nouveau_graph_wait_idle(drm_device_t *dev)
+{
+	drm_nouveau_private_t *dev_priv = dev->dev_private;
+	int tv = 1000;
+
+	while (tv--) {
+		if (NV_READ(0x400700) == 0)
+			break;
+	}
+
+	if (NV_READ(0x400700)) {
+		DRM_ERROR("timeout!\n");
+		return DRM_ERR(EBUSY);
+	}
+	return 0;
+}
+
+int nv30_graph_load_context(drm_device_t *dev, int channel)
+{
+	drm_nouveau_private_t *dev_priv = dev->dev_private;
+	struct nouveau_fifo *chan = &dev_priv->fifos[channel];
+	uint32_t inst;
+
+	if (!chan->ramin_grctx)
+		return DRM_ERR(EINVAL);
+	inst = nouveau_chip_instance_get(dev, chan->ramin_grctx);
+
+	NV_WRITE(0x400784, inst);
+	NV_WRITE(0x400788, 1);
+
+	return nouveau_graph_wait_idle(dev);
+}
+
+int nv30_graph_save_context(drm_device_t *dev, int channel)
+{
+	drm_nouveau_private_t *dev_priv = dev->dev_private;
+	struct nouveau_fifo *chan = &dev_priv->fifos[channel];
+	uint32_t inst;
+
+	if (!chan->ramin_grctx)
+		return DRM_ERR(EINVAL);
+	inst = nouveau_chip_instance_get(dev, chan->ramin_grctx);
+
+	NV_WRITE(0x400784, inst);
+	NV_WRITE(0x400788, 2);
+
+	return nouveau_graph_wait_idle(dev);
+}
+
 int nv30_graph_init(drm_device_t *dev)
 {
 	drm_nouveau_private_t *dev_priv =