Move special handling of qcom,adreno-smmu into qcom_smmu_create()
function. This allows us to further customize the Adreno SMMU
implementation.
Note, this also adds two entries to the qcom_smmu_impl_of_match table.
They were used with the qcom,adreno-smmu compat and were handled by the
removed clause.
Reviewed-by: Sai Prakash Ranjan <quic_saipr...@quicinc.com>
Tested-by: Sai Prakash Ranjan <quic_saipr...@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 32 ++++++++++++----------
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h | 1 +
2 files changed, 19 insertions(+), 14 deletions(-)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index a7bd49e44bca..e61194127772 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -407,13 +407,18 @@ static const struct arm_smmu_impl qcom_adreno_smmu_impl =
{
static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu,
const struct qcom_smmu_match_data *data)
{
+ const struct device_node *np = smmu->dev->of_node;
const struct arm_smmu_impl *impl;
struct qcom_smmu *qsmmu;
if (!data)
return ERR_PTR(-EINVAL);
- impl = data->impl;
+ if (np && of_device_is_compatible(np, "qcom,adreno-smmu"))
+ impl = data->adreno_impl;
+ else
+ impl = data->impl;
+
if (!impl)
return smmu;
@@ -431,15 +436,22 @@ static struct arm_smmu_device *qcom_smmu_create(struct
arm_smmu_device *smmu,
return &qsmmu->smmu;
}
-static const struct qcom_smmu_match_data qcom_smmu_data = {
- .impl = &qcom_smmu_impl,
+/*
+ * It is not yet possible to use MDP SMMU with the bypass quirk on the msm8996,
+ * there are not enough context banks.
+ */
+static const struct qcom_smmu_match_data msm8996_smmu_data = {
+ .impl = NULL,
+ .adreno_impl = &qcom_adreno_smmu_impl,
};
-static const struct qcom_smmu_match_data qcom_adreno_smmu_data = {
- .impl = &qcom_adreno_smmu_impl,
+static const struct qcom_smmu_match_data qcom_smmu_data = {
+ .impl = &qcom_smmu_impl,
+ .adreno_impl = &qcom_adreno_smmu_impl,
};
static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
+ { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data },
{ .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_data },
{ .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_data },
{ .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_data },
@@ -448,6 +460,7 @@ static const struct of_device_id __maybe_unused
qcom_smmu_impl_of_match[] = {
{ .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_data },
{ .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_data },
{ .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_data },
+ { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_data },
{ .compatible = "qcom,sdm845-smmu-500", .data = &qcom_smmu_data },
{ .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_data },
{ .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_data },
@@ -481,15 +494,6 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct
arm_smmu_device *smmu)
}
#endif
- /*
- * Do not change this order of implementation, i.e., first adreno
- * smmu impl and then apss smmu since we can have both implementing
- * arm,mmu-500 in which case we will miss setting adreno smmu specific
- * features if the order is changed.
- */
- if (of_device_is_compatible(np, "qcom,adreno-smmu"))
- return qcom_smmu_create(smmu, &qcom_adreno_smmu_data);
-
match = of_match_node(qcom_smmu_impl_of_match, np);
if (match)
return qcom_smmu_create(smmu, match->data);
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h
b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h
index 2424f10b7110..424d8d342ce0 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h
@@ -16,6 +16,7 @@ struct qcom_smmu {
struct qcom_smmu_match_data {
const struct arm_smmu_impl *impl;
+ const struct arm_smmu_impl *adreno_impl;
};
#ifdef CONFIG_ARM_SMMU_QCOM_DEBUG
--
2.35.1
