1. Start from mt6779, INVLDT_SEL move to offset=0x2c, so we add
REG_MMU_INV_SEL_GEN2 definition and mt6779 uses it.
2. Change PROTECT_PA_ALIGN from 128 byte to 256 byte.
3. For REG_MMU_CTRL_REG register, we only need to change bit[2:0],
others bits keep default value, ex: enable victim tlb.
4. Add mt6779_data to support mm_iommu HW init.
Change since v3:
1. When setting MMU_CTRL_REG, we don't need to include mt8173.
Cc: Yong Wu <yong.wu@xxxxxxxxxxxx>
Signed-off-by: Chao Hao <chao.hao@xxxxxxxxxxxx>
---
drivers/iommu/mtk_iommu.c | 20 ++++++++++++++++++--
drivers/iommu/mtk_iommu.h | 1 +
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index c706bca6487e..def2e996683f 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -37,6 +37,11 @@
#define REG_MMU_INVLD_START_A 0x024
#define REG_MMU_INVLD_END_A 0x028
+/* In latest Coda, MMU_INV_SEL's offset is changed to 0x02c.
+ * So we named offset = 0x02c to "REG_MMU_INV_SEL_GEN2"
+ * and offset = 0x038 to "REG_MMU_INV_SEL_GEN1".
+ */
+#define REG_MMU_INV_SEL_GEN2 0x02c
#define REG_MMU_INV_SEL_GEN1 0x038
#define F_INVLD_EN0 BIT(0)
#define F_INVLD_EN1 BIT(1)
@@ -98,7 +103,7 @@
#define F_MMU_INT_ID_LARB_ID(a) (((a) >> 7) & 0x7)
#define F_MMU_INT_ID_PORT_ID(a) (((a) >> 2) & 0x1f)
-#define MTK_PROTECT_PA_ALIGN 128
+#define MTK_PROTECT_PA_ALIGN 256
/*
* Get the local arbiter ID and the portid within the larb arbiter
@@ -543,11 +548,12 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
return ret;
}
+ regval = readl_relaxed(data->base + REG_MMU_CTRL_REG);
if (data->plat_data->m4u_plat == M4U_MT8173)
regval = F_MMU_PREFETCH_RT_REPLACE_MOD |
F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173;
else
- regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR;
+ regval |= F_MMU_TF_PROT_TO_PROGRAM_ADDR;
writel_relaxed(regval, data->base + REG_MMU_CTRL_REG);
regval = F_L2_MULIT_HIT_EN |
@@ -797,6 +803,15 @@ static const struct mtk_iommu_plat_data mt2712_data = {
.larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}},
};
+static const struct mtk_iommu_plat_data mt6779_data = {
+ .m4u_plat = M4U_MT6779,
+ .has_sub_comm = true,
+ .has_wr_len = true,
+ .has_misc_ctrl = true,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .larbid_remap = {{0}, {1}, {2}, {3}, {5}, {7, 8}, {10}, {9}},
+};
+
static const struct mtk_iommu_plat_data mt8173_data = {
.m4u_plat = M4U_MT8173,
.has_4gb_mode = true,
@@ -815,6 +830,7 @@ static const struct mtk_iommu_plat_data mt8183_data = {
static const struct of_device_id mtk_iommu_of_ids[] = {
{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
+ { .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},
{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},
{}
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 9971cedd72ea..fb79e710c8d9 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -31,6 +31,7 @@ struct mtk_iommu_suspend_reg {
enum mtk_iommu_plat {
M4U_MT2701,
M4U_MT2712,
+ M4U_MT6779,
M4U_MT8173,
M4U_MT8183,
};
--
2.18.0
