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-rw-r--r--drivers/iommu/mtk_iommu.c4
-rw-r--r--drivers/iommu/mtk_iommu.h2
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 4df3cb430b43..34f020367ebe 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -236,6 +236,8 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
fault_larb = F_MMU0_INT_ID_LARB_ID(regval);
fault_port = F_MMU0_INT_ID_PORT_ID(regval);
+ fault_larb = data->plat_data->larbid_remap[fault_larb];
+
if (report_iommu_fault(&dom->domain, data->dev, fault_iova,
write ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ)) {
dev_err_ratelimited(
@@ -766,12 +768,14 @@ static const struct mtk_iommu_plat_data mt2712_data = {
.m4u_plat = M4U_MT2712,
.has_4gb_mode = true,
.has_bclk = true,
+ .larbid_remap = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
};
static const struct mtk_iommu_plat_data mt8173_data = {
.m4u_plat = M4U_MT8173,
.has_4gb_mode = true,
.has_bclk = true,
+ .larbid_remap = {0, 1, 2, 3, 4, 5}, /* Linear mapping. */
};
static const struct of_device_id mtk_iommu_of_ids[] = {
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 821172bd6c52..d1a1d8887a0e 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -38,6 +38,8 @@ struct mtk_iommu_plat_data {
/* HW will use the EMI clock if there isn't the "bclk". */
bool has_bclk;
+
+ unsigned char larbid_remap[MTK_LARB_NR_MAX];
};
struct mtk_iommu_domain;