drm/vmwgfx: Update the user-space interface.

When time-based throttling is implemented, we need to bump minor.
When the old way of detecting scanout is removed, we need to bump major.
In the meantime, this change should not break existing user-space.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/include/drm/vmwgfx_drm.h b/include/drm/vmwgfx_drm.h
index 2be7e12..dfaf3c2 100644
--- a/include/drm/vmwgfx_drm.h
+++ b/include/drm/vmwgfx_drm.h
@@ -68,7 +68,8 @@
 #define DRM_VMW_PARAM_NUM_FREE_STREAMS 1
 #define DRM_VMW_PARAM_3D               2
 #define DRM_VMW_PARAM_FIFO_OFFSET      3
-
+#define DRM_VMW_PARAM_HW_CAPS          4
+#define DRM_VMW_PARAM_FIFO_CAPS        5
 
 /**
  * struct drm_vmw_getparam_arg
@@ -181,6 +182,8 @@ struct drm_vmw_context_arg {
  * The size of the array should equal the total number of mipmap levels.
  * @shareable: Boolean whether other clients (as identified by file descriptors)
  * may reference this surface.
+ * @scanout: Boolean whether the surface is intended to be used as a
+ * scanout.
  *
  * Input data to the DRM_VMW_CREATE_SURFACE Ioctl.
  * Output data from the DRM_VMW_REF_SURFACE Ioctl.
@@ -192,7 +195,7 @@ struct drm_vmw_surface_create_req {
 	uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
 	uint64_t size_addr;
 	int32_t shareable;
-	uint32_t pad64;
+	int32_t scanout;
 };
 
 /**
@@ -295,6 +298,9 @@ union drm_vmw_surface_reference_arg {
  *
  * @commands: User-space address of a command buffer cast to an uint64_t.
  * @command-size: Size in bytes of the command buffer.
+ * @throttle-us: Sleep until software is less than @throttle_us
+ * microseconds ahead of hardware. The driver may round this value
+ * to the nearest kernel tick.
  * @fence_rep: User-space address of a struct drm_vmw_fence_rep cast to an
  * uint64_t.
  *
@@ -304,7 +310,7 @@ union drm_vmw_surface_reference_arg {
 struct drm_vmw_execbuf_arg {
 	uint64_t commands;
 	uint32_t command_size;
-	uint32_t pad64;
+	uint32_t throttle_us;
 	uint64_t fence_rep;
 };