[PATCH v4 17/24] iommu/mediatek: Add single domain
From: Yong Wu <yong.wu@mediatek.com>
Date: 2020-11-11 12:41:38
Also in:
linux-arm-kernel, linux-iommu, linux-mediatek, lkml
Subsystem:
iommu subsystem, mediatek iommu driver, the rest · Maintainers:
Joerg Roedel, Will Deacon, Yong Wu, Linus Torvalds
Defaultly the iova range is 0-4G. here we add a single-domain(0-4G) for the previous SoC. this also is a preparing patch for supporting multi-domains. Signed-off-by: Yong Wu <yong.wu@mediatek.com> --- drivers/iommu/mtk_iommu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index bf3f4e0f4748..a7727a3899d1 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c@@ -161,6 +161,10 @@ struct mtk_iommu_iova_region { unsigned long long size; }; +static const struct mtk_iommu_iova_region single_domain[] = { + {.iova_base = 0, .size = SZ_4G}, +}; + /* * There may be 1 or 2 M4U HWs, But we always expect they are in the same domain * for the performance.
@@ -922,6 +926,8 @@ static const struct mtk_iommu_plat_data mt2712_data = { .m4u_plat = M4U_MT2712, .flags = HAS_4GB_MODE | HAS_BCLK | HAS_VLD_PA_RNG, .inv_sel_reg = REG_MMU_INV_SEL_GEN1, + .iova_region = single_domain, + .iova_region_nr = ARRAY_SIZE(single_domain), .larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}}, };
@@ -929,6 +935,8 @@ static const struct mtk_iommu_plat_data mt6779_data = { .m4u_plat = M4U_MT6779, .flags = HAS_SUB_COMM | OUT_ORDER_WR_EN | WR_THROT_EN, .inv_sel_reg = REG_MMU_INV_SEL_GEN2, + .iova_region = single_domain, + .iova_region_nr = ARRAY_SIZE(single_domain), .larbid_remap = {{0}, {1}, {2}, {3}, {5}, {7, 8}, {10}, {9}}, };
@@ -944,6 +952,8 @@ static const struct mtk_iommu_plat_data mt8173_data = { .flags = HAS_4GB_MODE | HAS_BCLK | RESET_AXI | HAS_LEGACY_IVRP_PADDR, .inv_sel_reg = REG_MMU_INV_SEL_GEN1, + .iova_region = single_domain, + .iova_region_nr = ARRAY_SIZE(single_domain), .larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}}, /* Linear mapping. */ };
@@ -951,6 +961,8 @@ static const struct mtk_iommu_plat_data mt8183_data = { .m4u_plat = M4U_MT8183, .flags = RESET_AXI, .inv_sel_reg = REG_MMU_INV_SEL_GEN1, + .iova_region = single_domain, + .iova_region_nr = ARRAY_SIZE(single_domain), .larbid_remap = {{0}, {4}, {5}, {6}, {7}, {2}, {3}, {1}}, };
--
2.18.0