[edk2-devel] 回复: [PATCH] MdePkg/include: Add DMAR SATC Table Definition

[gaoliming]

Reviewed-by: Liming Gao <gaoliming at byosoft.com.cn>

> -----邮件原件-----
> 发件人: Liu, Zhiguang <zhiguang.liu at intel.com>
> 发送时间: 2020年12月11日 10:51
> 收件人: Sheng, W <w.sheng at intel.com>; devel at edk2.groups.io
> 抄送: Kinney, Michael D <michael.d.kinney at intel.com>; Liming Gao
> <gaoliming at byosoft.com.cn>; Yao, Jiewen <jiewen.yao at intel.com>; Huang,
> Jenny <jenny.huang at intel.com>; Kowalewski, Robert
> <robert.kowalewski at intel.com>; Feng, Roger <roger.feng at intel.com>
> 主题: RE: [PATCH] MdePkg/include: Add DMAR SATC Table Definition
> 
> Reviewed-by: Zhiguang Liu <zhiguang.liu at intel.com>
> 
> > -----Original Message-----
> > From: Sheng, W <w.sheng at intel.com>
> > Sent: Friday, December 11, 2020 9:37 AM
> > To: devel at edk2.groups.io
> > Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Liming Gao
> > <gaoliming at byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu at intel.com>; Yao,
> > Jiewen <jiewen.yao at intel.com>; Huang, Jenny <jenny.huang at intel.com>;
> > Kowalewski, Robert <robert.kowalewski at intel.com>; Feng, Roger
> > <roger.feng at intel.com>
> > Subject: [PATCH] MdePkg/include: Add DMAR SATC Table Definition
> >
> > SoC Integrated Address Translation Cache (SATC) reporting structure is
one
> > of the Remapping Structure, which is imported since Intel(R)
Virtualization
> > Technology for Directed I/O (VT-D) Architecture Specification v3.2.
> >
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3109
> >
> > Signed-off-by: Sheng Wei <w.sheng at intel.com>
> > Cc: Michael D Kinney <michael.d.kinney at intel.com>
> > Cc: Liming Gao <gaoliming at byosoft.com.cn>
> > Cc: Zhiguang Liu <zhiguang.liu at intel.com>
> > Cc: Jiewen Yao <jiewen.yao at intel.com>
> > Cc: Jenny Huang <jenny.huang at intel.com>
> > Cc: Kowalewski Robert <robert.kowalewski at intel.com>
> > Cc: Feng Roger <roger.feng at intel.com>
> > ---
> >  .../IndustryStandard/DmaRemappingReportingTable.h  | 34
> > ++++++++++++++++++++--
> >  1 file changed, 31 insertions(+), 3 deletions(-)
> >
> > diff --git
> a/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> > b/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> > index 7c50dc972e..48f6959fec 100644
> > --- a/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> > +++ b/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> > @@ -2,13 +2,13 @@
> >    DMA Remapping Reporting (DMAR) ACPI table definition from Intel(R)
> >    Virtualization Technology for Directed I/O (VT-D) Architecture
> Specification.
> >
> > -  Copyright (c) 2016 - 2018, Intel Corporation. All rights
reserved.<BR>
> > +  Copyright (c) 2016 - 2020, Intel Corporation. All rights
reserved.<BR>
> >    SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >    @par Revision Reference:
> >      - Intel(R) Virtualization Technology for Directed I/O (VT-D)
> Architecture
> > -      Specification v2.5, Dated November 2017.
> > -
> >
> http://www.intel.com/content/dam/www/public/us/en/documents/product-
> > specifications/vt-directed-io-spec.pdf
> > +      Specification v3.2, Dated October 2020.
> > +
> >
> https://software.intel.com/content/dam/develop/external/us/en/documents
> /vt-
> > directed-io-spec.pdf
> >
> >    @par Glossary:
> >      - HPET - High Precision Event Timer
> > @@ -39,6 +39,7 @@
> >  #define EFI_ACPI_DMAR_TYPE_ATSR                   0x02
> >  #define EFI_ACPI_DMAR_TYPE_RHSA                   0x03
> >  #define EFI_ACPI_DMAR_TYPE_ANDD                   0x04
> > +#define EFI_ACPI_DMAR_TYPE_SATC                   0x05
> >  ///@}
> >
> >  ///
> > @@ -216,6 +217,32 @@ typedef struct {
> >    UINT8                           AcpiDeviceNumber;
> >  } EFI_ACPI_DMAR_ANDD_HEADER;
> >
> > +/**
> > +  An SoC Integrated Address Translation Cache (SATC) reporting
structure
> is
> > +  defined in section 8.8.
> > +**/
> > +typedef struct {
> > +  EFI_ACPI_DMAR_STRUCTURE_HEADER  Header;
> > +  /**
> > +    - Bit[0]: ATC_REQUIRED:
> > +              - If Set, indicates that every SoC integrated device
> enumerated
> > +                in this table has a functional requirement to enable
its
> ATC
> > +                (via the ATS capability) for device operation.
> > +              - If Clear, any device enumerated in this table can
> operate when
> > +                its respective ATC is not enabled (albeit with reduced
> > +                performance or functionality).
> > +    - Bits[7:1] Reserved.
> > +  **/
> > +  UINT8                           Flags;
> > +  UINT8                           Reserved;
> > +  ///
> > +  /// The PCI Segment associated with this SATC structure. All SoC
> integrated
> > +  /// devices within a PCI segment with same value for Flags field must
be
> > +  /// enumerated in the same SATC structure.
> > +  ///
> > +  UINT16                          SegmentNumber;
> > +} EFI_ACPI_DMAR_SATC_HEADER;
> > +
> >  /**
> >    DMA Remapping Reporting Structure Header as defined in section 8.1
> >    This header will be followed by list of Remapping Structures listed
> below
> > @@ -224,6 +251,7 @@ typedef struct {
> >      - Root Port ATS Capability Reporting (ATSR)
> >      - Remapping Hardware Static Affinity (RHSA)
> >      - ACPI Name-space Device Declaration (ANDD)
> > +    - SoC Integrated Address Translation Cache reporting (SATC)
> >    These structure types must by reported in numerical order.
> >    i.e., All remapping structures of type 0 (DRHD) enumerated before
> > remapping
> >    structures of type 1 (RMRR), and so forth.
> > --
> > 2.16.2.windows.1





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