diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-08-22 13:15:57 -0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-09-25 11:45:29 +0200 |
| commit | e8f52d84cf0b6d1862ab62f7ed705f78690d11b2 (patch) | |
| tree | 5fba4306a231fc6d6a49f3f22aee870098d3085b /include/linux/iommu.h | |
| parent | e946f8e3e62bf05da21a14658f8cb05e2a616260 (diff) | |
iommu: Add generic_single_device_group()
This implements the common pattern seen in drivers of a single iommu_group
for the entire iommu driver instance. Implement this in core code so the
drivers that want this can select it from their ops.
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/2-v1-c869a95191f2+5e8-iommu_single_grp_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 3f173307434d..5b693be3d35f 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -378,6 +378,7 @@ struct iommu_domain_ops { * @list: Used by the iommu-core to keep a list of registered iommus * @ops: iommu-ops for talking to this iommu * @dev: struct device for sysfs handling + * @singleton_group: Used internally for drivers that have only one group * @max_pasids: number of supported PASIDs */ struct iommu_device { @@ -385,6 +386,7 @@ struct iommu_device { const struct iommu_ops *ops; struct fwnode_handle *fwnode; struct device *dev; + struct iommu_group *singleton_group; u32 max_pasids; }; @@ -648,6 +650,7 @@ extern struct iommu_group *pci_device_group(struct device *dev); extern struct iommu_group *generic_device_group(struct device *dev); /* FSL-MC device grouping function */ struct iommu_group *fsl_mc_device_group(struct device *dev); +extern struct iommu_group *generic_single_device_group(struct device *dev); /** * struct iommu_fwspec - per-device IOMMU instance data |