> -----Original Message-----
> From: Zeng, Star
> Sent: Thursday, January 18, 2018 10:36 AM
> To: Wu, Hao A; edk2-devel@lists.01.org
> Cc: Yao, Jiewen; Kinney, Michael D; Gao, Liming; Zeng, Star
> Subject: RE: [PATCH] MdePkg/DMAR: Add the definition for
> DMA_CTRL_PLATFORM_OPT_IN_FLAG bit
>
> Please also update the information according to 2.5 spec.
>
> - Intel(R) Virtualization Technology for Directed I/O (VT-D) Architecture
> Specification v2.4, Dated June 2016.
>
Yes, I will update the comments when pushing the commit.
Best Regards,
Hao Wu
> Reviewed-by: Star Zeng <star.z...@intel.com>
>
> Thanks,
> Star
> -----Original Message-----
> From: Wu, Hao A
> Sent: Thursday, January 18, 2018 10:03 AM
> To: edk2-devel@lists.01.org
> Cc: Wu, Hao A <hao.a...@intel.com>; Zeng, Star <star.z...@intel.com>; Yao,
> Jiewen <jiewen....@intel.com>; Kinney, Michael D
> <michael.d.kin...@intel.com>; Gao, Liming <liming....@intel.com>
> Subject: [PATCH] MdePkg/DMAR: Add the definition for
> DMA_CTRL_PLATFORM_OPT_IN_FLAG bit
>
> For the support of VTd 2.5, add the BIT definition of
> DMA_CTRL_PLATFORM_OPT_IN_FLAG
>
> Cc: Star Zeng <star.z...@intel.com>
> Cc: Jiewen Yao <jiewen....@intel.com>
> Cc: Michael D Kinney <michael.d.kin...@intel.com>
> Cc: Liming Gao <liming....@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Hao Wu <hao.a...@intel.com>
> ---
> .../IndustryStandard/DmaRemappingReportingTable.h | 16 +++++++++++--
> ---
> 1 file changed, 11 insertions(+), 5 deletions(-)
>
> diff --git a/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> b/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> index c09ef76e40..fced884c02 100644
> --- a/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> +++ b/MdePkg/Include/IndustryStandard/DmaRemappingReportingTable.h
> @@ -2,7 +2,7 @@
> DMA Remapping Reporting (DMAR) ACPI table definition from Intel(R)
> Virtualization Technology for Directed I/O (VT-D) Architecture
> Specification.
>
> - Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
> + Copyright (c) 2016 - 2018, Intel Corporation. All rights
> + reserved.<BR>
> This program and the accompanying materials
> are licensed and made available under the terms and conditions of the BSD
> License
> which accompanies this distribution. The full text of the license may be
> found
> at @@ -30,10 +30,11 @@ /// /// DMA-Remapping Reporting Structure
> definitions from section 8.1 ///@{
> -#define EFI_ACPI_DMAR_REVISION 0x01
> +#define EFI_ACPI_DMAR_REVISION 0x01
>
> -#define EFI_ACPI_DMAR_FLAGS_INTR_REMAP BIT0
> -#define EFI_ACPI_DMAR_FLAGS_X2APIC_OPT_OUT BIT1
> +#define EFI_ACPI_DMAR_FLAGS_INTR_REMAP BIT0
> +#define EFI_ACPI_DMAR_FLAGS_X2APIC_OPT_OUT BIT1
> +#define EFI_ACPI_DMAR_FLAGS_DMA_CTRL_PLATFORM_OPT_IN_FLAG BIT2
> ///@}
>
> ///
> @@ -252,7 +253,12 @@ typedef struct {
> firmware may Set this field to request system software to opt
> out of enabling Extended xAPIC (X2APIC) mode. This field is
> valid only when the INTR_REMAP field (bit 0) is Set.
> - - Bits[7:2] Reserved.
> + - Bit[2]: DMA_CTRL_PLATFORM_OPT_IN_FLAG - Platform firmware is
> + recommended to Set this field to report any platform
> initiated
> + DMA is restricted to only reserved memory regions (reported
> in
> + RMRR structures) when transferring control to system software
> + such as on ExitBootServices().
> + - Bits[7:3] Reserved.
> **/
> UINT8 Flags;
> UINT8 Reserved[10];
> --
> 2.12.0.windows.1
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