commit edf30dc0425ef7b22477a777031469425b4c5480
author Himanshu Agarwal <himanaga@codeaurora.org> Mon Jun 05 15:54:27 2017 +0530
committer nshrivas <nshrivas@codeaurora.org> Mon Mar 19 09:34:23 2018 -0700
tree 9c9daf2c0b3f12ebca080e528dfcf2e6ad0bdeba
parent a36af23dad21ebd7ceeb02470d433d29f4341ee1

qcacld-3.0: Add support for WLAN-IPA SMMU Stage 1 translation

Update WLAN-IPA datapath buffer sharing for SMMU Stage 1
translation support. When SMMU Stage 1 translation is enabled,
DMA APIs return IO virtual address(IOVA) instead of physical
address. This IOVA needs to be mapped to physical address by IPA
module before accessing them.

Change-Id: I6b24cde7b7805395053a8fd8f9afbad202e6105f
CRS-Fixed: 2072960

Kbuild

diff --git a/Kbuild b/Kbuild
index e5a376a..a63a48f 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2498,6 +2498,11 @@
 CDEFINES += -DFEATURE_MULTICAST_HOST_FW_MSGS
 endif
 
+#Flag to enable SMMU S1 support
+ifeq ($(CONFIG_ARCH_SDM845), y)
+CDEFINES += -DENABLE_SMMU_S1_TRANSLATION
+endif
+
 KBUILD_CPPFLAGS += $(CDEFINES)
 
 # Currently, for versions of gcc which support it, the kernel Makefile