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authorJoerg Roedel <jroedel@suse.de>2015-05-28 19:41:32 +0300
committerJoerg Roedel <jroedel@suse.de>2015-06-09 09:55:23 +0300
commit2c1296d92ac0367364bcb73a43c12a0bdfbfee75 (patch)
treeb1cd702a8a1bb45143421bc839f5dad791028196 /include/linux/iommu.h
parente39cb8a3aa988a74433a3f26443b454cca033651 (diff)
downloadlinux-2c1296d92ac0367364bcb73a43c12a0bdfbfee75.tar.xz
iommu: Add iommu_get_domain_for_dev function
This function can be used to request the current domain a device is attached to. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
-rw-r--r--include/linux/iommu.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 0546b8710ce3..683a1c4b15e7 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -193,6 +193,7 @@ extern int iommu_attach_device(struct iommu_domain *domain,
struct device *dev);
extern void iommu_detach_device(struct iommu_domain *domain,
struct device *dev);
+extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev);
extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot);
extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
@@ -332,6 +333,11 @@ static inline void iommu_detach_device(struct iommu_domain *domain,
{
}
+static inline struct iommu_domain *iommu_get_domain_for_dev(struct device *dev)
+{
+ return NULL;
+}
+
static inline int iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, int gfp_order, int prot)
{