diff options
| author | Daniel Drake <dan@reactivated.net> | 2026-09-27 14:09:03 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-09-28 10:19:13 +0200 |
| commit | 3e69ac737ed4ae248c49f8a70faa0a96eeecd59a (patch) | |
| tree | dab15fa1ffec13782cf6fca7551a18a6813458b8 /include/linux | |
| parent | b445c70575ad94adb3bfdbde48c3e2c1c61d47da (diff) | |
iommu/generic_pt: Add Broadcom BCM2712 page table format
Implement generic_pt support for the 2-level page table format used by
the BCM2712 IOMMUs.
Adapted from Raspberry Pi's downstream bcm2712-iommu driver (original
author Nick Hollinghurst).
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Daniel Drake <dan@reactivated.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/generic_pt/common.h | 6 | ||||
| -rw-r--r-- | include/linux/generic_pt/iommu.h | 12 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/generic_pt/common.h b/include/linux/generic_pt/common.h index 07ef1c8341a4..1b39b27f0cfa 100644 --- a/include/linux/generic_pt/common.h +++ b/include/linux/generic_pt/common.h @@ -213,4 +213,10 @@ enum { PT_FEAT_X86_64_AMD_ENCRYPT_TABLES = PT_FEAT_FMT_START, }; +struct pt_bcm2712 { + struct pt_common common; + u8 bigpage_lg2; + u8 superpage_lg2; +}; + #endif diff --git a/include/linux/generic_pt/iommu.h b/include/linux/generic_pt/iommu.h index dd0edd02a48a..13ebb72a67de 100644 --- a/include/linux/generic_pt/iommu.h +++ b/include/linux/generic_pt/iommu.h @@ -346,6 +346,18 @@ struct pt_iommu_x86_64_hw_info { IOMMU_FORMAT(x86_64, x86_64_pt); +struct pt_iommu_bcm2712_cfg { + struct pt_iommu_cfg common; + u8 bigpage_lg2; + u8 superpage_lg2; +}; + +struct pt_iommu_bcm2712_hw_info { + phys_addr_t pt_base; +}; + +IOMMU_FORMAT(bcm2712, bcm2712pt); + #undef IOMMU_PROTOTYPES #undef IOMMU_FORMAT #endif |