linux-kernel - [PATCH 4/5] iommu/rockchip: add ARM64 cache flush operation for iommu

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Message-Id: <1463967439-13354-5-git-send-email-zhengsq@rock-chips.com>
Date:	Mon, 23 May 2016 09:37:18 +0800
From:	Shunqian Zheng <zhengsq@...k-chips.com>
To:	joro@...tes.org, heiko@...ech.de
Cc:	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org, Simon <xxm@...k-chips.com>
Subject: [PATCH 4/5] iommu/rockchip: add ARM64 cache flush operation for iommu

From: Simon <xxm@...k-chips.com>

Signed-off-by: Simon <xxm@...k-chips.com>
---
 drivers/iommu/rockchip-iommu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 043d18c..1741b65 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)
-- 
1.9.1