From: Kunkun Jiang <jiangkun...@huawei.com>
This realizes sync_dirty_log iommu ops based on sync_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 | 30 +++++++++++++++++++++
1 file changed, 30 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 6de81d6ab652..3d3c0f8e2446 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2721,6 +2721,35 @@ static int arm_smmu_switch_dirty_log(struct iommu_domain
*domain, bool enable,
return 0;
}
+static int arm_smmu_sync_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->sync_dirty_log) {
+ pr_err("io-pgtable don't realize sync dirty log\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Flush iotlb to ensure all inflight transactions are completed.
+ * See doc IHI0070Da 3.13.4 "HTTU behavior summary".
+ */
+ arm_smmu_flush_iotlb_all(domain);
+ return ops->sync_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);
@@ -2820,6 +2849,7 @@ static struct iommu_ops arm_smmu_ops = {
.device_group = arm_smmu_device_group,
.enable_nesting = arm_smmu_enable_nesting,
.switch_dirty_log = arm_smmu_switch_dirty_log,
+ .sync_dirty_log = arm_smmu_sync_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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