Add iotlb_sync_map operation for flush IOTLB. Software must
flush the IOTLB after each page table.
Signed-off-by: Zong Li<zong.li@xxxxxxxxxx>
---
drivers/iommu/riscv/Makefile | 1 +
drivers/iommu/riscv/iommu.c | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/drivers/iommu/riscv/Makefile b/drivers/iommu/riscv/Makefile
index d36625a1fd08..f02ce6ebfbd0 100644
--- a/drivers/iommu/riscv/Makefile
+++ b/drivers/iommu/riscv/Makefile
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_RISCV_IOMMU) += iommu.o iommu-platform.o iommu-pmu.o
obj-$(CONFIG_RISCV_IOMMU_PCI) += iommu-pci.o
+obj-$(CONFIG_SIFIVE_IOMMU) += iommu-sifive.o
diff --git a/drivers/iommu/riscv/iommu.c b/drivers/iommu/riscv/iommu.c
index 9aeb4b20c145..df7aeb2571ae 100644
--- a/drivers/iommu/riscv/iommu.c
+++ b/drivers/iommu/riscv/iommu.c
@@ -1115,6 +1115,16 @@ static void riscv_iommu_iotlb_sync(struct iommu_domain *iommu_domain,
riscv_iommu_iotlb_inval(domain, gather->start, gather->end);
}
+static int riscv_iommu_iotlb_sync_map(struct iommu_domain *iommu_domain,
+ unsigned long iova, size_t size)
+{
+ struct riscv_iommu_domain *domain = iommu_domain_to_riscv(iommu_domain);
+
+ riscv_iommu_iotlb_inval(domain, iova, iova + size - 1);