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| author | Joerg Roedel <jroedel@suse.de> | 2015-10-21 21:51:38 (GMT) |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-10-21 22:00:49 (GMT) |
| commit | 6eab556a40384de94c2d03c8d9d632e5154367f5 (patch) | |
| tree | c1a50c01363688c5b974317e34f0f90baee7889d | |
| parent | 5e62292bad10cff25ff75d136c54e62b43bfb0fa (diff) | |
| download | linux-6eab556a40384de94c2d03c8d9d632e5154367f5.tar.xz | |
iommu: Add generic_device_group() function
This function can be used as a device_group call-back and
just allocates one iommu-group per device.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
| -rw-r--r-- | drivers/iommu/iommu.c | 15 | ||||
| -rw-r--r-- | include/linux/iommu.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index fdea700..a80c9c5 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -728,6 +728,21 @@ static int get_pci_alias_or_group(struct pci_dev *pdev, u16 alias, void *opaque) } /* + * Generic device_group call-back function. It just allocates one + * iommu-group per device. + */ +struct iommu_group *generic_device_group(struct device *dev) +{ + struct iommu_group *group; + + group = iommu_group_alloc(); + if (IS_ERR(group)) + return NULL; + + return group; +} + +/* * Use standard PCI bus topology, isolation features, and DMA alias quirks * to find or create an IOMMU group for a device. */ diff --git a/include/linux/iommu.h b/include/linux/iommu.h index a1a06639..f28dff3 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -319,6 +319,8 @@ static inline size_t iommu_map_sg(struct iommu_domain *domain, /* PCI device grouping function */ extern struct iommu_group *pci_device_group(struct device *dev); +/* Generic device grouping function */ +extern struct iommu_group *generic_device_group(struct device *dev); #else /* CONFIG_IOMMU_API */ |