From: Nate Watterson <nwatterson@xxxxxxxxxx>
Follow arm-smmu driver's infrastructure for handling implementation
specific details outside the flow of architectural code.
Signed-off-by: Nate Watterson <nwatterson@xxxxxxxxxx>
Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
---
drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +-
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c | 8 ++++++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 4 ++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 ++++
4 files changed, 17 insertions(+), 1 deletion(-)
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
diff --git a/drivers/iommu/arm/arm-smmu-v3/Makefile b/drivers/iommu/arm/arm-smmu-v3/Makefile
index 54feb1ecccad..1f5838d3351b 100644
--- a/drivers/iommu/arm/arm-smmu-v3/Makefile
+++ b/drivers/iommu/arm/arm-smmu-v3/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_ARM_SMMU_V3) += arm_smmu_v3.o
-arm_smmu_v3-objs-y += arm-smmu-v3.o
+arm_smmu_v3-objs-y += arm-smmu-v3.o arm-smmu-v3-impl.o
arm_smmu_v3-objs-$(CONFIG_ARM_SMMU_V3_SVA) += arm-smmu-v3-sva.o
arm_smmu_v3-objs := $(arm_smmu_v3-objs-y)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
new file mode 100644
index 000000000000..6947d28067a8
--- /dev/null
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "arm-smmu-v3.h"
+
+struct arm_smmu_device *arm_smmu_v3_impl_init(struct arm_smmu_device *smmu)
+{
+ return smmu;
+}
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 216f3442aac4..510e1493fd5a 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3844,6 +3844,10 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
return ret;
}
+ smmu = arm_smmu_v3_impl_init(smmu);
+ if (IS_ERR(smmu))
+ return PTR_ERR(smmu);
+
/* Set bypass mode according to firmware probing result */
bypass = !!ret;
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 20463d17fd9f..c65c39336916 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -810,4 +810,8 @@ static inline u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle)
static inline void arm_smmu_sva_notifier_synchronize(void) {}
#endif /* CONFIG_ARM_SMMU_V3_SVA */
+
+/* Implementation details */
+struct arm_smmu_device *arm_smmu_v3_impl_init(struct arm_smmu_device *smmu);
+
#endif /* _ARM_SMMU_V3_H */
--
2.17.1
