intel: Export CONSTANT_BUFFER addressing mode

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

5 files changed, 21 insertions, 8 deletions

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 19da2c044..98e159787 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;
diff --git a/intel/intel_bufmgr.c b/intel/intel_bufmgr.c
index f93a87078..b7c5c0917 100644
--- a/intel/intel_bufmgr.c
+++ b/intel/intel_bufmgr.c
@@ -136,12 +136,12 @@ drm_intel_bo_exec(drm_intel_bo *bo, int used,
 int
 drm_intel_bo_mrb_exec(drm_intel_bo *bo, int used,
 		drm_clip_rect_t *cliprects, int num_cliprects, int DR4,
-		int ring_flag)
+		unsigned int rings)
 {
 	if (bo->bufmgr->bo_mrb_exec)
 		return bo->bufmgr->bo_mrb_exec(bo, used,
 					cliprects, num_cliprects, DR4,
-					ring_flag);
+					rings);
 
 	return -ENODEV;
 }
diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h
index e1b4c4546..daa18b4cd 100644
--- a/intel/intel_bufmgr.h
+++ b/intel/intel_bufmgr.h
@@ -114,7 +114,7 @@ int drm_intel_bo_exec(drm_intel_bo *bo, int used,
 		      struct drm_clip_rect *cliprects, int num_cliprects, int DR4);
 int drm_intel_bo_mrb_exec(drm_intel_bo *bo, int used,
 			struct drm_clip_rect *cliprects, int num_cliprects, int DR4,
-			int ring_flag);
+			unsigned int flags);
 int drm_intel_bufmgr_check_aperture_space(drm_intel_bo ** bo_array, int count);
 
 int drm_intel_bo_emit_reloc(drm_intel_bo *bo, uint32_t offset,
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index c5bb5885c..72c8731f7 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -1555,13 +1555,13 @@ drm_intel_gem_bo_exec(drm_intel_bo *bo, int used,
 static int
 drm_intel_gem_bo_mrb_exec2(drm_intel_bo *bo, int used,
 			drm_clip_rect_t *cliprects, int num_cliprects, int DR4,
-			int ring_flag)
+			unsigned int flags)
 {
 	drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *)bo->bufmgr;
 	struct drm_i915_gem_execbuffer2 execbuf;
 	int ret, i;
 
-	switch (ring_flag) {
+	switch (flags & 0x7) {
 	default:
 		return -EINVAL;
 	case I915_EXEC_BLT:
@@ -1594,7 +1594,7 @@ drm_intel_gem_bo_mrb_exec2(drm_intel_bo *bo, int used,
 	execbuf.num_cliprects = num_cliprects;
 	execbuf.DR1 = 0;
 	execbuf.DR4 = DR4;
-	execbuf.flags = ring_flag;
+	execbuf.flags = flags;
 	execbuf.rsvd1 = 0;
 	execbuf.rsvd2 = 0;
 
diff --git a/intel/intel_bufmgr_priv.h b/intel/intel_bufmgr_priv.h
index 87e91e7f7..0b625200a 100644
--- a/intel/intel_bufmgr_priv.h
+++ b/intel/intel_bufmgr_priv.h
@@ -177,8 +177,8 @@ struct _drm_intel_bufmgr {
 	 * ring buffer
 	 */
 	int (*bo_mrb_exec) (drm_intel_bo *bo, int used,
-			drm_clip_rect_t *cliprects, int num_cliprects,
-			int DR4, int ring_flag);
+			    drm_clip_rect_t *cliprects, int num_cliprects,
+			    int DR4, unsigned flags);
 
 	/**
 	 * Pin a buffer to the aperture and fix the offset until unpinned