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Subject[PATCH v3 17/24] iommu/mediatek: Add single domain
Date
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 8e2a8e29d13c..87ca4f47e494 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -158,6 +158,10 @@ 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.
@@ -886,6 +890,8 @@ 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}},
};

@@ -893,6 +899,8 @@ 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}},
};

@@ -900,6 +908,8 @@ static const struct mtk_iommu_plat_data mt8173_data = {
.m4u_plat = M4U_MT8173,
.flags = HAS_4GB_MODE | HAS_BCLK | RESET_AXI,
.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. */
};

@@ -907,6 +917,8 @@ 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
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