commit 13cdf813ab74e839c4d98d0871b3f6e03dda4f63
author Shalaj Jain <shalajj@codeaurora.org> Tue Dec 02 16:20:54 2014 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> Thu Dec 11 10:54:35 2014 -0800
tree daa6db8a97f1c93a5a5e28debf8c5615d57a03be
parent c18558644fc9304c882905c6f6f39c0b28baddc8

gralloc: Allow non-contiguous allocations for secure buffers

Pass a flag to ion to allow non-contiguous allocations with a sg
(scatter gather) list of 1MB chunks for all secure buffers except
secure display.

Change-Id: Ife2709e94571ab7603b29da17805a857ba73fd72

libgralloc/alloc_controller.cpp

diff --git a/libgralloc/alloc_controller.cpp b/libgralloc/alloc_controller.cpp
index 4167ae2..cd6d565 100644
--- a/libgralloc/alloc_controller.cpp
+++ b/libgralloc/alloc_controller.cpp
@@ -292,6 +292,11 @@
         if (usage & GRALLOC_USAGE_PRIVATE_MM_HEAP) {
             ionFlags |= ION_HEAP(ION_CP_MM_HEAP_ID);
             ionFlags |= ION_SECURE;
+#ifdef ION_FLAG_ALLOW_NON_CONTIG
+            if (!(usage & GRALLOC_USAGE_PRIVATE_SECURE_DISPLAY)) {
+                ionFlags |= ION_FLAG_ALLOW_NON_CONTIG;
+            }
+#endif
         } else {
             // for targets/OEMs which do not need HW level protection
             // do not set ion secure flag & MM heap. Fallback to IOMMU heap.