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authorYong Wu <yong.wu@mediatek.com>2017-08-21 14:00:17 +0300
committerJoerg Roedel <jroedel@suse.de>2017-08-22 17:37:59 +0300
commit7c3a2ec02806a6f83270f34f8ab4e501e7d8ea69 (patch)
tree883982558e8cc0ae2e19ae29dc3b7f92f33459cb /drivers/iommu/mtk_iommu.h
parente6dec92308628cff5f1f8bd1bcdf87581c9dc676 (diff)
downloadlinux-7c3a2ec02806a6f83270f34f8ab4e501e7d8ea69.tar.xz
iommu/mediatek: Merge 2 M4U HWs into one iommu domain
In theory, If there are 2 M4U HWs, there should be 2 IOMMU domains. But one IOMMU domain(4GB iova range) is enough for us currently, It's unnecessary to maintain 2 pagetables. Besides, This patch can simplify our consumer code largely. They don't need map a iova range from one domain into another, They can share the iova address easily. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/mtk_iommu.h')
-rw-r--r--drivers/iommu/mtk_iommu.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 462e593b7d71..b4451a1c7c2f 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -57,6 +57,8 @@ struct mtk_iommu_data {
struct iommu_device iommu;
enum mtk_iommu_plat m4u_plat;
+
+ struct list_head list;
};
static inline int compare_of(struct device *dev, void *data)