Commit beee685e authored by Kunkun Jiang's avatar Kunkun Jiang Committed by Zheng Zengkai
Browse files

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

virt inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I3ZUKK


CVE: NA

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

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

Co-developed-by: default avatarKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: default avatarKunkun Jiang <jiangkunkun@huawei.com>
Reviewed-by: default avatarKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 947019a9

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

+30 −0
Original line number Diff line number Diff line
@@ -3154,6 +3154,35 @@ 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);
@@ -3392,6 +3421,7 @@ static struct iommu_ops arm_smmu_ops = { 
	.domain_get_attr	= arm_smmu_domain_get_attr,

	.domain_set_attr	= arm_smmu_domain_set_attr,

	.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,