[Mesa-dev] [PATCH 04/16] i965: Add a cache_coherent field to brw_bo

[Matt Turner]

---
 src/mesa/drivers/dri/i965/brw_bufmgr.c        | 1 +
 src/mesa/drivers/dri/i965/brw_bufmgr.h        | 5 +++++
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.c b/src/mesa/drivers/dri/i965/brw_bufmgr.c
index 9a65d32..2b42182 100644
--- a/src/mesa/drivers/dri/i965/brw_bufmgr.c
+++ b/src/mesa/drivers/dri/i965/brw_bufmgr.c
@@ -351,6 +351,7 @@ retry:
    bo->name = name;
    p_atomic_set(&bo->refcount, 1);
    bo->reusable = true;
+   bo->cache_coherent = bufmgr->has_llc;
 
    pthread_mutex_unlock(&bufmgr->lock);
 
diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.h b/src/mesa/drivers/dri/i965/brw_bufmgr.h
index 1e3e8cf..6ce14bb 100644
--- a/src/mesa/drivers/dri/i965/brw_bufmgr.h
+++ b/src/mesa/drivers/dri/i965/brw_bufmgr.h
@@ -123,6 +123,11 @@ struct brw_bo {
     * Boolean of whether this buffer can be re-used
     */
    bool reusable;
+
+   /**
+    * Boolean of whether this buffer is cache coherent
+    */
+   bool cache_coherent;
 };
 
 #define BO_ALLOC_FOR_RENDER (1<<0)
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 6c308ff..049b4c1 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -627,6 +627,9 @@ miptree_create(struct brw_context *brw,
                                   alloc_flags);
    }
 
+   if (layout_flags & MIPTREE_LAYOUT_FOR_SCANOUT)
+      mt->bo->cache_coherent = false;
+
    return mt;
 }
 
-- 
2.10.2