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| author | Yian Chen <yian.chen@intel.com> | 2021-02-04 09:43:59 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-02-04 14:42:00 +0100 |
| commit | 81d3c75bb3c32ca61712e093b8dce89d73c22150 (patch) | |
| tree | faa00fcede057942f2a354af3b379806fdb6521a /include/acpi/actbl1.h | |
| parent | 933fcd01e97e2ba29880dd5f1239365e40094950 (diff) | |
| download | linux-81d3c75bb3c32ca61712e093b8dce89d73c22150.tar.gz | |
iommu/vt-d: Add new enum value and structure for SATC
Starting from Intel Platform VT-d v3.2, BIOS may provide new remapping structure SATC for SOC integrated devices, according to section 8.8 of Intel VT-d architecture specification v3.2. The SATC structure reports a list of the devices that require ATS for normal device operation. It is a functional requirement that these devices will not work without OS enabling ATS capability. This patch introduces the new enum value and structure to represent the remapping information. Kernel should parse the information from the reporting structure and enable ATC for the devices as needed. Signed-off-by: Yian Chen <yian.chen@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20210203093329.1617808-1-baolu.lu@linux.intel.com Link: https://lore.kernel.org/r/20210204014401.2846425-6-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/acpi/actbl1.h')
| -rw-r--r-- | include/acpi/actbl1.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index 43549547ed3e..c38e08cf1b9e 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -514,7 +514,8 @@ enum acpi_dmar_type { ACPI_DMAR_TYPE_ROOT_ATS = 2, ACPI_DMAR_TYPE_HARDWARE_AFFINITY = 3, ACPI_DMAR_TYPE_NAMESPACE = 4, - ACPI_DMAR_TYPE_RESERVED = 5 /* 5 and greater are reserved */ + ACPI_DMAR_TYPE_SATC = 5, + ACPI_DMAR_TYPE_RESERVED = 6 /* 6 and greater are reserved */ }; /* DMAR Device Scope structure */ @@ -607,6 +608,14 @@ struct acpi_dmar_andd { char device_name[1]; }; +/* 5: SOC Integrated Address Translation Cache Reporting Structure */ + +struct acpi_dmar_satc { + struct acpi_dmar_header header; + u8 flags; + u8 reserved; + u16 segment; +}; /******************************************************************************* * * DRTM - Dynamic Root of Trust for Measurement table |