Add ACTLR data table for qcom_smmu_500 including
corresponding data entry and set prefetch value by
way of a list of compatible strings.
Signed-off-by: Bibek Kumar Patro <quic_bibekkum@xxxxxxxxxxx>
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index b595fee23836..5106103574ab 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -16,8 +16,40 @@
#define QCOM_DUMMY_VAL -1
+/*
+ * SMMU-500 TRM defines BIT(0) as CMTLB (Enable context caching in the
+ * macro TLB) and BIT(1) as CPRE (Enable context caching in the prefetch
+ * buffer). The remaining bits are implementation defined and vary across
+ * SoCs.
+ */
+
+#define CPRE (1 << 1)
+#define CMTLB (1 << 0)
+#define PREFETCH_SHIFT 8
+#define PREFETCH_DEFAULT 0
+#define PREFETCH_SHALLOW (1 << PREFETCH_SHIFT)
+#define PREFETCH_MODERATE (2 << PREFETCH_SHIFT)
+#define PREFETCH_DEEP (3 << PREFETCH_SHIFT)
#define GFX_ACTLR_PRR (1 << 5)
+static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
+ { .compatible = "qcom,adreno",
+ .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,adreno-gmu",
+ .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,adreno-smmu",
+ .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,fastrpc",
+ .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,sc7280-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sc7280-venus",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm8550-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+ { }
+};
+
static struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu)
{
return container_of(smmu, struct qcom_smmu, smmu);
@@ -620,6 +652,7 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = {
.impl = &qcom_smmu_500_impl,
.adreno_impl = &qcom_adreno_smmu_500_impl,
.cfg = &qcom_smmu_impl0_cfg,
+ .client_match = qcom_smmu_actlr_client_of_match,
};
/*
--
2.34.1
