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authorJoerg Roedel <jroedel@suse.de>2015-03-26 13:43:04 +0100
committerJoerg Roedel <jroedel@suse.de>2015-03-31 15:31:23 +0200
commit938c470976192590b4adc921b2e10fa31237eddc (patch)
tree783d60eb23be6d6e0ec88c95c5eb32b5fdf81ad4 /include/linux/iommu.h
parente42391cd048809d903291d07f86ed3934ce138e9 (diff)
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op-kernel-dev-938c470976192590b4adc921b2e10fa31237eddc.tar.gz
iommu: Introduce domain_alloc and domain_free iommu_ops
These new call-backs defer the allocation and destruction of 'struct iommu_domain' to the iommu driver. This allows drivers to embed this struct into their private domain structures and to get rid of the domain_init and domain_destroy call-backs when all drivers have been converted. Tested-by: Thierry Reding <treding@nvidia.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
-rw-r--r--include/linux/iommu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 38daa45..69d1d12 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -115,6 +115,11 @@ struct iommu_ops {
bool (*capable)(enum iommu_cap);
int (*domain_init)(struct iommu_domain *domain);
void (*domain_destroy)(struct iommu_domain *domain);
+
+ /* Domain allocation and freeing by the iommu driver */
+ struct iommu_domain *(*domain_alloc)(void);
+ void (*domain_free)(struct iommu_domain *);
+
int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
int (*map)(struct iommu_domain *domain, unsigned long iova,
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