diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2022-10-31 08:59:06 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-11-03 15:47:44 +0100 |
| commit | 22d2c7afb3697a68c7fc05c935ef662dee06dc60 (patch) | |
| tree | 7877f4524e9b3f2d32ab72e9761dcfdaa3b7cb63 /include/linux/iommu.h | |
| parent | 1adf3cc20d693569ebee90fd91fa34b0570fcd6f (diff) | |
| download | lwn-22d2c7afb3697a68c7fc05c935ef662dee06dc60.tar.gz lwn-22d2c7afb3697a68c7fc05c935ef662dee06dc60.zip | |
iommu: Add max_pasids field in struct dev_iommu
Use this field to save the number of PASIDs that a device is able to
consume. It is a generic attribute of a device and lifting it into the
per-device dev_iommu struct could help to avoid the boilerplate code
in various IOMMU drivers.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Tested-by: Tony Zhu <tony.zhu@intel.com>
Link: https://lore.kernel.org/r/20221031005917.45690-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index e3af4f46e6e0..ac3f6c6dcc6d 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -368,6 +368,7 @@ struct iommu_fault_param { * @fwspec: IOMMU fwspec data * @iommu_dev: IOMMU device this device is linked to * @priv: IOMMU Driver private data + * @max_pasids: number of PASIDs this device can consume * * TODO: migrate other per device data pointers under iommu_dev_data, e.g. * struct iommu_group *iommu_group; @@ -379,6 +380,7 @@ struct dev_iommu { struct iommu_fwspec *fwspec; struct iommu_device *iommu_dev; void *priv; + u32 max_pasids; }; int iommu_device_register(struct iommu_device *iommu, |