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Commit 6827ca83 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu: Add function to query the default domain of a group 



This will be used to handle unity mappings in the iommu
drivers.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent beed2821

drivers/iommu/iommu.c

+5 −0
Original line number Diff line number Diff line
@@ -837,6 +837,11 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) 
	return group;

}



struct iommu_domain *iommu_group_default_domain(struct iommu_group *group)

{

	return group->default_domain;

}



static int add_iommu_group(struct device *dev, void *data)

{

	struct iommu_callback_data *cb = data;

include/linux/iommu.h

+1 −0
Original line number Diff line number Diff line
@@ -249,6 +249,7 @@ extern int iommu_group_unregister_notifier(struct iommu_group *group, 
					   struct notifier_block *nb);

extern int iommu_group_id(struct iommu_group *group);

extern struct iommu_group *iommu_group_get_for_dev(struct device *dev);

extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *);



extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr,

				 void *data);