Commit 3c34da03 authored by Kunkun Jiang's avatar Kunkun Jiang Committed by Jia Qingtong
Browse files

iommu/arm-smmu-v3: Realize sync_dirty_log iommu ops 

virt inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8UZSP


CVE: NA

------------------------------

This realizes sync_dirty_log iommu ops based on sync_dirty_log
io-pgtable ops.

Signed-off-by: default avatarKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: default avatarKunkun Jiang <jiangkunkun@huawei.com>
Signed-off-by: default avatarjiaqingtong <jiaqingtong@huawei.com>
parent eba349fa

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

+30 −0
Original line number Diff line number Diff line
@@ -2985,6 +2985,35 @@ 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);
@@ -3121,6 +3150,7 @@ static struct iommu_ops arm_smmu_ops = { 
		.iova_to_phys		= arm_smmu_iova_to_phys,

		.enable_nesting		= arm_smmu_enable_nesting,

		.switch_dirty_log	= arm_smmu_switch_dirty_log,

		.sync_dirty_log		= arm_smmu_sync_dirty_log,

		.free			= arm_smmu_domain_free,

	}

};