[PATCH v1 07/14] iommu/arm-smmu-v3: Add STRTAB_STE_0_CFG_NESTED for 2-stage translation

Nicolin Chen
2023-03-09T10:55:46Z

From: Eric Auger <eric.auger@redhat.com>

The value of the STRTAB_STE_0_CFG field can be 0b111 as the configuration
for a 2-stage translation, meaning that both S1 and S2 are valid. Add it
and mark the ste_live accordingly.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 +
2 files changed, 2 insertions(+)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 29e36448d23b..21d819979865 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -1292,6 +1292,7 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_master *master, u32 sid,
break;
case STRTAB_STE_0_CFG_S1_TRANS:
case STRTAB_STE_0_CFG_S2_TRANS:
+ case STRTAB_STE_0_CFG_NESTED:
ste_live = true;
break;
case STRTAB_STE_0_CFG_ABORT:
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index 233bfc377267..1a93eeb993ea 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -208,6 +208,7 @@
#define STRTAB_STE_0_CFG_BYPASS 4
#define STRTAB_STE_0_CFG_S1_TRANS 5
#define STRTAB_STE_0_CFG_S2_TRANS 6
+#define STRTAB_STE_0_CFG_NESTED 7

#define STRTAB_STE_0_S1FMT GENMASK_ULL(5, 4)
#define STRTAB_STE_0_S1FMT_LINEAR 0
--
2.39.2