agp: add chipset flushing support to AGP interface
This bumps the AGP interface to 0.103.
Certain Intel chipsets contains a global write buffer, and this can require
flushing from the drm or X.org to make sure all data has hit RAM before
initiating a GPU transfer, due to a lack of coherency with the integrated
graphics device and this buffer.
This just adds generic support to the AGP interfaces, a follow-on patch
will add support to the Intel driver to use this interface.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
index ecd4248..3927579 100644
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -273,6 +273,10 @@
case AGPIOC_UNBIND32:
ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
break;
+
+ case AGPIOC_CHIPSET_FLUSH32:
+ ret_val = agpioc_chipset_flush_wrap(curr_priv);
+ break;
}
ioctl_out: