From: Simon <xxm@rock-chips.com>
Date: Wed, 30 Mar 2016 01:34:35 +0000 (+0800)
Subject: iommu/rockchip: add ARM64 cache flush operation for iommu
X-Git-Tag: firefly_0821_release~2945
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=acbe537f27c92743e29e9a09ac764c3491130d09;p=firefly-linux-kernel-4.4.55.git

iommu/rockchip: add ARM64 cache flush operation for iommu

Change-Id: I5848ca01a38e902a436b5b4abccfe235e2746cc1
Signed-off-by: Simon <xxm@rock-chips.com>
---

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index e9db6badd5cb..a34e459f560d 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -95,12 +95,16 @@ struct rk_iommu {
 
 static inline void rk_table_flush(u32 *va, unsigned int count)
 {
+#if defined(CONFIG_ARM)
 	phys_addr_t pa_start = virt_to_phys(va);
 	phys_addr_t pa_end = virt_to_phys(va + count);
 	size_t size = pa_end - pa_start;
 
 	__cpuc_flush_dcache_area(va, size);
 	outer_flush_range(pa_start, pa_end);
+#elif defined(CONFIG_ARM64)
+	__dma_flush_range(va, va + count);
+#endif
 }
 
 static struct rk_iommu_domain *to_rk_domain(struct iommu_domain *dom)