From: Kunkun Jiang <jiangkun...@huawei.com>
This realizes clear_dirty_log iommu ops based on clear_dirty_log
io-pgtable ops.
Co-developed-by: Keqian Zhu <zhukeqi...@huawei.com>
Signed-off-by: Kunkun Jiang <jiangkun...@huawei.com>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 25 +++++++++++++++++++++
1 file changed, 25 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 3d3c0f8e2446..9b4739247dbb 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2750,6 +2750,30 @@ static int arm_smmu_sync_dirty_log(struct iommu_domain
*domain,
bitmap_pgshift);
}
+static int arm_smmu_clear_dirty_log(struct iommu_domain *domain,
+ unsigned long iova, size_t size,
+ unsigned long *bitmap,
+ unsigned long base_iova,
+ unsigned long bitmap_pgshift)
+{
+ struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct io_pgtable_ops *ops = smmu_domain->pgtbl_ops;
+ struct arm_smmu_device *smmu = smmu_domain->smmu;
+
+ if (!(smmu->features & ARM_SMMU_FEAT_HD))
+ return -ENODEV;
+ if (smmu_domain->stage != ARM_SMMU_DOMAIN_S1)
+ return -EINVAL;
+
+ if (!ops || !ops->clear_dirty_log) {
+ pr_err("io-pgtable don't realize clear dirty log\n");
+ return -ENODEV;
+ }
+
+ return ops->clear_dirty_log(ops, iova, size, bitmap, base_iova,
+ bitmap_pgshift);
+}
+
static int arm_smmu_of_xlate(struct device *dev, struct of_phandle_args *args)
{
return iommu_fwspec_add_ids(dev, args->args, 1);
@@ -2850,6 +2874,7 @@ static struct iommu_ops arm_smmu_ops = {
.enable_nesting = arm_smmu_enable_nesting,
.switch_dirty_log = arm_smmu_switch_dirty_log,
.sync_dirty_log = arm_smmu_sync_dirty_log,
+ .clear_dirty_log = arm_smmu_clear_dirty_log,
.of_xlate = arm_smmu_of_xlate,
.get_resv_regions = arm_smmu_get_resv_regions,
.put_resv_regions = generic_iommu_put_resv_regions,
--
2.19.1
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