diff options
| author | Yi Liu <yi.l.liu@intel.com> | 2023-10-25 21:42:09 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-10-26 11:16:33 -0300 |
| commit | 82b6661c9c35e60946dee536545b4848f25eafab (patch) | |
| tree | e159e339ab84f400e1a75ef504723f9fc2a845f3 /include/uapi/linux/iommufd.h | |
| parent | a2cdecdf9d234455fdfc8f539bbf5818711bc29d (diff) | |
iommufd: Add data structure for Intel VT-d stage-1 domain allocation
This adds IOMMU_HWPT_DATA_VTD_S1 for stage-1 hw_pagetable of Intel
VT-d and the corressponding data structure for userspace specified parameter
for the domain allocation.
Link: https://lore.kernel.org/r/20231026044216.64964-2-yi.l.liu@intel.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/uapi/linux/iommufd.h')
| -rw-r--r-- | include/uapi/linux/iommufd.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index d816deac906f..3ce5ee5f09b6 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -362,11 +362,41 @@ enum iommufd_hwpt_alloc_flags { }; /** + * enum iommu_hwpt_vtd_s1_flags - Intel VT-d stage-1 page table + * entry attributes + * @IOMMU_VTD_S1_SRE: Supervisor request + * @IOMMU_VTD_S1_EAFE: Extended access enable + * @IOMMU_VTD_S1_WPE: Write protect enable + */ +enum iommu_hwpt_vtd_s1_flags { + IOMMU_VTD_S1_SRE = 1 << 0, + IOMMU_VTD_S1_EAFE = 1 << 1, + IOMMU_VTD_S1_WPE = 1 << 2, +}; + +/** + * struct iommu_hwpt_vtd_s1 - Intel VT-d stage-1 page table + * info (IOMMU_HWPT_DATA_VTD_S1) + * @flags: Combination of enum iommu_hwpt_vtd_s1_flags + * @pgtbl_addr: The base address of the stage-1 page table. + * @addr_width: The address width of the stage-1 page table + * @__reserved: Must be 0 + */ +struct iommu_hwpt_vtd_s1 { + __aligned_u64 flags; + __aligned_u64 pgtbl_addr; + __u32 addr_width; + __u32 __reserved; +}; + +/** * enum iommu_hwpt_data_type - IOMMU HWPT Data Type * @IOMMU_HWPT_DATA_NONE: no data + * @IOMMU_HWPT_DATA_VTD_S1: Intel VT-d stage-1 page table */ enum iommu_hwpt_data_type { IOMMU_HWPT_DATA_NONE, + IOMMU_HWPT_DATA_VTD_S1, }; /** |