msm: iommu: Don't read from write-only registers
Don't read from V2Pxx command registers when doing
iova-to-phys operations. These registers are write-only and
reading the value before modifying the VA bits is
unnecessary.
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h b/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h
index bbd397c..fc16010 100644
--- a/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h
+++ b/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h
@@ -625,20 +625,6 @@
#define SET_INDEX(b, c, v) SET_CONTEXT_FIELD(b, c, V2PSR, INDEX, v)
-/* V2Pxx UW UR PW PR */
-#define SET_V2PUW_INDEX(b, c, v) SET_CONTEXT_FIELD(b, c, V2PUW, V2Pxx_INDEX, v)
-#define SET_V2PUW_VA(b, c, v) SET_CONTEXT_FIELD(b, c, V2PUW, V2Pxx_VA, v)
-
-#define SET_V2PUR_INDEX(b, c, v) SET_CONTEXT_FIELD(b, c, V2PUR, V2Pxx_INDEX, v)
-#define SET_V2PUR_VA(b, c, v) SET_CONTEXT_FIELD(b, c, V2PUR, V2Pxx_VA, v)
-
-#define SET_V2PPW_INDEX(b, c, v) SET_CONTEXT_FIELD(b, c, V2PPW, V2Pxx_INDEX, v)
-#define SET_V2PPW_VA(b, c, v) SET_CONTEXT_FIELD(b, c, V2PPW, V2Pxx_VA, v)
-
-#define SET_V2PPR_INDEX(b, c, v) SET_CONTEXT_FIELD(b, c, V2PPR, V2Pxx_INDEX, v)
-#define SET_V2PPR_VA(b, c, v) SET_CONTEXT_FIELD(b, c, V2PPR, V2Pxx_VA, v)
-
-
/* Context Register getters */
/* ACTLR */
#define GET_CFERE(b, c) GET_CONTEXT_FIELD(b, c, ACTLR, CFERE)
@@ -826,20 +812,6 @@
#define GET_INDEX(b, c) GET_CONTEXT_FIELD(b, c, V2PSR, INDEX)
-/* V2Pxx UW UR PW PR */
-#define GET_V2PUW_INDEX(b, c) GET_CONTEXT_FIELD(b, c, V2PUW, V2Pxx_INDEX)
-#define GET_V2PUW_VA(b, c) GET_CONTEXT_FIELD(b, c, V2PUW, V2Pxx_VA)
-
-#define GET_V2PUR_INDEX(b, c) GET_CONTEXT_FIELD(b, c, V2PUR, V2Pxx_INDEX)
-#define GET_V2PUR_VA(b, c) GET_CONTEXT_FIELD(b, c, V2PUR, V2Pxx_VA)
-
-#define GET_V2PPW_INDEX(b, c) GET_CONTEXT_FIELD(b, c, V2PPW, V2Pxx_INDEX)
-#define GET_V2PPW_VA(b, c) GET_CONTEXT_FIELD(b, c, V2PPW, V2Pxx_VA)
-
-#define GET_V2PPR_INDEX(b, c) GET_CONTEXT_FIELD(b, c, V2PPR, V2Pxx_INDEX)
-#define GET_V2PPR_VA(b, c) GET_CONTEXT_FIELD(b, c, V2PPR, V2Pxx_VA)
-
-
/* Global Registers */
#define M2VCBR_N (0xFF000)
#define CBACR_N (0xFF800)
diff --git a/arch/arm/mach-msm/iommu.c b/arch/arm/mach-msm/iommu.c
index 0146f519..1a584e0 100644
--- a/arch/arm/mach-msm/iommu.c
+++ b/arch/arm/mach-msm/iommu.c
@@ -579,7 +579,7 @@
/* Invalidate context TLB */
SET_CTX_TLBIALL(base, ctx, 0);
- SET_V2PPR_VA(base, ctx, va >> V2Pxx_VA_SHIFT);
+ SET_V2PPR(base, ctx, va & V2Pxx_VA);
par = GET_PAR(base, ctx);