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| author |   Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> | 2022-06-15 11:10:39 +0100 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2022-07-06 12:51:10 +0200 |
| commit | 491cf4a6735a957cd0733365f8d17e0f4308f5a4 (patch) | |
| tree | 7d25e3c321b932c07836863f255defd2fe88ba1a /include/linux/iommu.h | |
| parent | ACPI/IORT: Provide a generic helper to retrieve reserve regions (diff) | |
| download | wireguard-linux-491cf4a6735a957cd0733365f8d17e0f4308f5a4.tar.xz wireguard-linux-491cf4a6735a957cd0733365f8d17e0f4308f5a4.zip | |
ACPI/IORT: Add support to retrieve IORT RMR reserved regions
Parse through the IORT RMR nodes and populate the reserve region list
corresponding to a given IOMMU and device(optional). Also, go through
the ID mappings of the RMR node and retrieve all the SIDs associated
with it.
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Steven Price <steven.price@arm.com>
Tested-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20220615101044.1972-5-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index b22ffa6bc4a9..e6abd998dbe7 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -146,6 +146,14 @@ struct iommu_resv_region { void (*free)(struct device *dev, struct iommu_resv_region *region); }; +struct iommu_iort_rmr_data { + struct iommu_resv_region rr; + + /* Stream IDs associated with IORT RMR entry */ + const u32 *sids; + u32 num_sids; +}; + /** * enum iommu_dev_features - Per device IOMMU features * @IOMMU_DEV_FEAT_SVA: Shared Virtual Addresses |