drm/nouveau: Implement the pageflip ioctl.

nv0x-nv4x should be mostly fine, nv50 doesn't work yet.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nv04_graph.c b/drivers/gpu/drm/nouveau/nv04_graph.c
index 81aba09..239519a 100644
--- a/drivers/gpu/drm/nouveau/nv04_graph.c
+++ b/drivers/gpu/drm/nouveau/nv04_graph.c
@@ -26,6 +26,7 @@
 #include "drm.h"
 #include "nouveau_drm.h"
 #include "nouveau_drv.h"
+#include "nouveau_hw.h"
 
 static int nv04_graph_register(struct drm_device *dev);
 
@@ -553,6 +554,20 @@ nv04_graph_mthd_set_ref(struct nouveau_channel *chan,
 	return 0;
 }
 
+int
+nv04_graph_mthd_page_flip(struct nouveau_channel *chan,
+			  u32 class, u32 mthd, u32 data)
+{
+	struct drm_device *dev = chan->dev;
+	struct nouveau_page_flip_state s;
+
+	if (!nouveau_finish_page_flip(chan, &s))
+		nv_set_crtc_base(dev, s.crtc,
+				 s.offset + s.y * s.pitch + s.x * s.bpp / 8);
+
+	return 0;
+}
+
 /*
  * Software methods, why they are needed, and how they all work:
  *
@@ -1204,6 +1219,7 @@ nv04_graph_register(struct drm_device *dev)
 	/* nvsw */
 	NVOBJ_CLASS(dev, 0x506e, SW);
 	NVOBJ_MTHD (dev, 0x506e, 0x0150, nv04_graph_mthd_set_ref);
+	NVOBJ_MTHD (dev, 0x506e, 0x0500, nv04_graph_mthd_page_flip);
 
 	dev_priv->engine.graph.registered = true;
 	return 0;