From 585e58f498a2855dc7a8d351df34dd645447f337 Mon Sep 17 00:00:00 2001 From: Yong Wu Date: Mon, 11 Jan 2021 19:19:07 +0800 Subject: iommu/mediatek: Add iova_region structure Add a new structure for the iova_region. Each a region will be a independent iommu domain. For the previous SoC, there is single iova region(0~4G). For the SoC that need support multi-domains, there will be several regions. Signed-off-by: Yong Wu Reviewed-by: Tomasz Figa Link: https://lore.kernel.org/r/20210111111914.22211-27-yong.wu@mediatek.com Signed-off-by: Will Deacon --- drivers/iommu/mtk_iommu.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/iommu/mtk_iommu.h') diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index a9b79e118f02..118170af1974 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -45,10 +45,15 @@ enum mtk_iommu_plat { M4U_MT8183, }; +struct mtk_iommu_iova_region; + struct mtk_iommu_plat_data { enum mtk_iommu_plat m4u_plat; u32 flags; u32 inv_sel_reg; + + unsigned int iova_region_nr; + const struct mtk_iommu_iova_region *iova_region; unsigned char larbid_remap[MTK_LARB_COM_MAX][MTK_LARB_SUBCOM_MAX]; }; -- cgit v1.2.3