On 2022-06-30 10:29, yf.w...@mediatek.com wrote:
From: Yunfei Wang <yf.w...@mediatek.com>
Single memory zone feature will remove ZONE_DMA32 and ZONE_DMA. So add
the quirk IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT to let level 1 and level 2
pgtable support at most 35bit PA.
FWIW,
Reviewed-by: Robin Murphy <robin.mur...@arm.com>
Signed-off-by: Ning Li <ning...@mediatek.com>
Signed-off-by: Yunfei Wang <yf.w...@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index bb9dd92c9898..3b9f4bdb15b7 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -34,7 +34,6 @@
#include <dt-bindings/memory/mtk-memory-port.h>
#define REG_MMU_PT_BASE_ADDR 0x000
-#define MMU_PT_ADDR_MASK GENMASK(31, 7)
#define REG_MMU_INVALIDATE 0x020
#define F_ALL_INVLD 0x2
@@ -138,6 +137,7 @@
/* PM and clock always on. e.g. infra iommu */
#define PM_CLK_AO BIT(15)
#define IFA_IOMMU_PCIE_SUPPORT BIT(16)
+#define PGTABLE_PA_35_EN BIT(17)
#define MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, mask) \
((((pdata)->flags) & (mask)) == (_x))
@@ -596,6 +596,9 @@ static int mtk_iommu_domain_finalise(struct
mtk_iommu_domain *dom,
.iommu_dev = data->dev,
};
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, PGTABLE_PA_35_EN))
+ dom->cfg.quirks |= IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT;
+
if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_4GB_MODE))
dom->cfg.oas = data->enable_4GB ? 33 : 32;
else
@@ -684,8 +687,7 @@ static int mtk_iommu_attach_device(struct iommu_domain
*domain,
goto err_unlock;
}
bank->m4u_dom = dom;
- writel(dom->cfg.arm_v7s_cfg.ttbr & MMU_PT_ADDR_MASK,
- bank->base + REG_MMU_PT_BASE_ADDR);
+ writel(dom->cfg.arm_v7s_cfg.ttbr, bank->base +
REG_MMU_PT_BASE_ADDR);
pm_runtime_put(m4udev);
}
@@ -1366,8 +1368,7 @@ static int __maybe_unused mtk_iommu_runtime_resume(struct
device *dev)
writel_relaxed(reg->int_control[i], base +
REG_MMU_INT_CONTROL0);
writel_relaxed(reg->int_main_control[i], base +
REG_MMU_INT_MAIN_CONTROL);
writel_relaxed(reg->ivrp_paddr[i], base + REG_MMU_IVRP_PADDR);
- writel(m4u_dom->cfg.arm_v7s_cfg.ttbr & MMU_PT_ADDR_MASK,
- base + REG_MMU_PT_BASE_ADDR);
+ writel(m4u_dom->cfg.arm_v7s_cfg.ttbr, base +
REG_MMU_PT_BASE_ADDR);
} while (++i < data->plat_data->banks_num);
/*
@@ -1401,7 +1402,7 @@ static const struct mtk_iommu_plat_data mt2712_data = {
static const struct mtk_iommu_plat_data mt6779_data = {
.m4u_plat = M4U_MT6779,
.flags = HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN | WR_THROT_EN |
- MTK_IOMMU_TYPE_MM,
+ MTK_IOMMU_TYPE_MM | PGTABLE_PA_35_EN,
.inv_sel_reg = REG_MMU_INV_SEL_GEN2,
.banks_num = 1,
.banks_enable = {true},
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