Re: [RFC v2 1/6] MdeModulePkg: Add DxeBmDmaLib (BmDmaLib class) library

["Ni, Ruiyu" <ruiyu.ni@intel.com>]

Leo,
Did you forget to add the BmDmaLib implementation in the patch?

Thanks/Ray

> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
> Leo Duran
> Sent: Saturday, January 14, 2017 6:14 AM
> To: edk2-devel@lists.01.org
> Cc: Tian, Feng <feng.tian@intel.com>; brijesh.singh@amd.com;
> ard.biesheuvel@linaro.org; Justen, Jordan L <jordan.l.justen@intel.com>;
> Leo Duran <leo.duran@amd.com>; Zeng, Star <star.zeng@intel.com>;
> lersek@redhat.com; Agyeman, Prince <prince.agyeman@intel.com>
> Subject: [edk2] [RFC v2 1/6] MdeModulePkg: Add DxeBmDmaLib (BmDmaLib
> class) library
> 
> This patch provides an abstraction layer for Bus-master DMA operations as
> currently implemented by the PciHostBridgeDxe driver. The intent is to then
> allow override of this library as may be required by specific hardware
> implementations, such as AMD's Secure Encrypted Virtualization (SEV).
> 
> This new (BmDmaLib class) library is cloned from the existing DmaLib with an
> additional DmaAbove4GB (BOOLEAN) parameter for the Map and Allocate
> interfaces, so that decisions can be made about the need to allocate DMA
> buffers below the 4GB boundary.
> ---
>  MdeModulePkg/MdeModulePkg.dsc | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/MdeModulePkg/MdeModulePkg.dsc
> b/MdeModulePkg/MdeModulePkg.dsc index 5996fe5..311922e 100644
> --- a/MdeModulePkg/MdeModulePkg.dsc
> +++ b/MdeModulePkg/MdeModulePkg.dsc
> @@ -275,6 +275,7 @@ [Components]
>    MdeModulePkg/Core/Pei/PeiMain.inf
>    MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf
> 
> +  MdeModulePkg/Library/DxeBmDmaLib/DxeBmDmaLib.inf
>    MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
> 
> MdeModulePkg/Library/UefiMemoryAllocationProfileLib/UefiMemoryAlloca
> tionProfileLib.inf
> 
> MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllo
> cationLib.inf
> --
> 1.9.1
> 
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