intel: Export CONSTANT_BUFFER addressing mode

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 19da2c04..98e15978 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -279,6 +279,8 @@ typedef struct drm_i915_irq_wait {
 #define I915_PARAM_HAS_BSD		 10
 #define I915_PARAM_HAS_BLT		 11
 #define I915_PARAM_HAS_RELAXED_FENCING	 12
+#define I915_PARAM_HAS_COHERENT_RINGS	 13
+#define I915_PARAM_HAS_EXEC_CONSTANTS	 14
 
 typedef struct drm_i915_getparam {
 	int param;
@@ -625,6 +627,17 @@ struct drm_i915_gem_execbuffer2 {
 #define I915_EXEC_RENDER                 (1<<0)
 #define I915_EXEC_BSD                    (2<<0)
 #define I915_EXEC_BLT                    (3<<0)
+
+/* Used for switching the constants addressing mode on gen4+ RENDER ring.
+ * Gen6+ only supports relative addressing to dynamic state (default) and
+ * absolute addressing.
+ *
+ * These flags are ignored for the BSD and BLT rings.
+ */
+#define I915_EXEC_CONSTANTS_MASK 	(3<<6)
+#define I915_EXEC_CONSTANTS_REL_GENERAL (0<<6) /* default */
+#define I915_EXEC_CONSTANTS_ABSOLUTE 	(1<<6)
+#define I915_EXEC_CONSTANTS_REL_SURFACE (2<<6) /* gen4/5 only */
 	__u64 flags;
 	__u64 rsvd1;
 	__u64 rsvd2;