[PATCH 1/8] drm/i915: expose helper mapping exec flag engine to intel_engine_cs

[Lionel Landwerlin <lionel.g.landwerlin@intel.com>]

This function will be used later by the per (context,engine) power
programming interface.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h            |  3 +++
 drivers/gpu/drm/i915/i915_gem_execbuffer.c | 18 +++++++++---------
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2c72c596057f..fdf71164ee24 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2895,6 +2895,9 @@ void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
 void i915_gem_load_init_fences(struct drm_i915_private *dev_priv);
 int i915_gem_freeze(struct drm_i915_private *dev_priv);
 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
+struct intel_engine_cs *i915_gem_engine_from_flags(struct drm_i915_private *dev_priv,
+						   struct drm_file *file,
+						   u64 flags);
 
 void *i915_gem_object_alloc(struct drm_i915_private *dev_priv);
 void i915_gem_object_free(struct drm_i915_gem_object *obj);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index c74f5df3fb5a..9c13ec39d87b 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -2032,12 +2032,12 @@ static const enum intel_engine_id user_ring_map[I915_USER_RINGS + 1] = {
 	[I915_EXEC_VEBOX]	= VECS
 };
 
-static struct intel_engine_cs *
-eb_select_engine(struct drm_i915_private *dev_priv,
-		 struct drm_file *file,
-		 struct drm_i915_gem_execbuffer2 *args)
+struct intel_engine_cs *
+i915_gem_engine_from_flags(struct drm_i915_private *dev_priv,
+			   struct drm_file *file,
+			   u64 flags)
 {
-	unsigned int user_ring_id = args->flags & I915_EXEC_RING_MASK;
+	unsigned int user_ring_id = flags & I915_EXEC_RING_MASK;
 	struct intel_engine_cs *engine;
 
 	if (user_ring_id > I915_USER_RINGS) {
@@ -2046,14 +2046,14 @@ eb_select_engine(struct drm_i915_private *dev_priv,
 	}
 
 	if ((user_ring_id != I915_EXEC_BSD) &&
-	    ((args->flags & I915_EXEC_BSD_MASK) != 0)) {
+	    ((flags & I915_EXEC_BSD_MASK) != 0)) {
 		DRM_DEBUG("execbuf with non bsd ring but with invalid "
-			  "bsd dispatch flags: %d\n", (int)(args->flags));
+			  "bsd dispatch flags: %d\n", (int)(flags));
 		return NULL;
 	}
 
 	if (user_ring_id == I915_EXEC_BSD && HAS_BSD2(dev_priv)) {
-		unsigned int bsd_idx = args->flags & I915_EXEC_BSD_MASK;
+		unsigned int bsd_idx = flags & I915_EXEC_BSD_MASK;
 
 		if (bsd_idx == I915_EXEC_BSD_DEFAULT) {
 			bsd_idx = gen8_dispatch_bsd_engine(dev_priv, file);
@@ -2256,7 +2256,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
 	if (args->flags & I915_EXEC_IS_PINNED)
 		eb.batch_flags |= I915_DISPATCH_PINNED;
 
-	eb.engine = eb_select_engine(eb.i915, file, args);
+	eb.engine = i915_gem_engine_from_flags(eb.i915, file, args->flags);
 	if (!eb.engine)
 		return -EINVAL;
 
-- 
2.17.0

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