diff options
| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2020-01-15 13:52:29 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-01-15 16:00:57 +0000 |
| commit | 89535821c04256964e266bf585cf224f65e08983 (patch) | |
| tree | fe81d533c592dcdf302e2c997f6cebebc114d060 /include/linux/iommu.h | |
| parent | 2e981b9468e670b76bd1048fa939ad1f9653bd79 (diff) | |
iommu/arm-smmu-v3: Parse PASID devicetree property of platform devices
For platform devices that support SubstreamID (SSID), firmware provides
the number of supported SSID bits. Restrict it to what the SMMU supports
and cache it into master->ssid_bits, which will also be used for PCI
PASID.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
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 90007c92ad2d..c1ad15228447 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -579,6 +579,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev); * @ops: ops for this device's IOMMU * @iommu_fwnode: firmware handle for this device's IOMMU * @iommu_priv: IOMMU driver private data for this device + * @num_pasid_bits: number of PASID bits supported by this device * @num_ids: number of associated device IDs * @ids: IDs which this device may present to the IOMMU */ @@ -587,6 +588,7 @@ struct iommu_fwspec { struct fwnode_handle *iommu_fwnode; void *iommu_priv; u32 flags; + u32 num_pasid_bits; unsigned int num_ids; u32 ids[1]; }; |