From: "Yao, Jiewen" <jiewen.yao@intel.com>
To: "Wu, Hao A" <hao.a.wu@intel.com>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Zeng, Star" <star.zeng@intel.com>,
"Kinney, Michael D" <michael.d.kinney@intel.com>,
"Gao, Liming" <liming.gao@intel.com>
Subject: Re: [PATCH] MdePkg/DMAR: Add the definition for DMA_CTRL_PLATFORM_OPT_IN_FLAG bit
Date: Thu, 18 Jan 2018 02:34:57 +0000 [thread overview]
Message-ID: <74D8A39837DF1E4DA445A8C0B3885C503AA80E92@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <20180118020243.6208-1-hao.a.wu@intel.com>
Thanks.
Would you please also update the file header on spec version and URL to the new spec?
Reviewed-by: Jiewen.yao@intel.com
> -----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.wu@intel.com>; Zeng, Star <star.zeng@intel.com>; Yao,
> Jiewen <jiewen.yao@intel.com>; Kinney, Michael D
> <michael.d.kinney@intel.com>; Gao, Liming <liming.gao@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.zeng@intel.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Liming Gao <liming.gao@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Hao Wu <hao.a.wu@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
next prev parent reply other threads:[~2018-01-18 2:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-18 2:02 [PATCH] MdePkg/DMAR: Add the definition for DMA_CTRL_PLATFORM_OPT_IN_FLAG bit Hao Wu
2018-01-18 2:34 ` Yao, Jiewen [this message]
2018-01-18 2:35 ` Zeng, Star
2018-01-18 2:43 ` Wu, Hao A
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