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| author | Alex Williamson <alex.williamson@redhat.com> | 2012-05-31 00:18:41 +0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-06-25 15:47:20 +0400 |
| commit | 74416e1e07660798379ce10a210bf4fd35b84f9f (patch) | |
| tree | c95498bc5c4de2d246ddf0f0a453ca930364c8ba | |
| parent | 3ebb9566007083c6fd92674996d2a0be2ea79745 (diff) | |
| download | linux-74416e1e07660798379ce10a210bf4fd35b84f9f.tar.xz | |
driver core: Add iommu_group tracking to struct device
IOMMU groups allow IOMMU drivers to represent DMA visibility
and isolation of devices. Multiple devices may be grouped
together for the purposes of DMA. Placing a pointer on
struct device enable easy access for things like streaming
DMA programming and drivers like VFIO.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | include/linux/device.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 161d96241b1b..d0e4d99405ae 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -36,6 +36,7 @@ struct subsys_private; struct bus_type; struct device_node; struct iommu_ops; +struct iommu_group; struct bus_attribute { struct attribute attr; @@ -687,6 +688,7 @@ struct device { const struct attribute_group **groups; /* optional groups */ void (*release)(struct device *dev); + struct iommu_group *iommu_group; }; /* Get the wakeup routines, which depend on struct device */ |