Sounds good, thanks. Leo
> -----Original Message----- > From: Ni, Ruiyu [mailto:ruiyu...@intel.com] > Sent: Thursday, March 02, 2017 8:04 PM > To: Duran, Leo <leo.du...@amd.com>; edk2-de...@ml01.01.org > Cc: Yao, Jiewen <jiewen....@intel.com> > Subject: RE: [edk2] [PATCH v4 0/6] DxeBmDmaLib (BmDmaLib class) library > > Leo, > I talked with Jiewen in office today. He felt that Intel might have a similar > need of such layer of abstraction (BmDmaLib). > We are investigating it. Can you please wait for several days? > We'd like to review the current interfaces of BmDmaLib to make sure it's > general enough to meet any potential needs. > Sorry about the delay. > > Regards, > Ray > > >-----Original Message----- > >From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of > >Leo Duran > >Sent: Friday, March 3, 2017 2:47 AM > >To: edk2-de...@ml01.01.org > >Cc: Leo Duran <leo.du...@amd.com> > >Subject: [edk2] [PATCH v4 0/6] DxeBmDmaLib (BmDmaLib class) library > > > >This series 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). > > > >Please refer to the RFC discussion for SEV here: > >http://marc.info/?l=linux-mm&m=147190814023863&w=2 > > > >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. > > > >NOTE: The abstraction layer is intended for Bus-master (DMA capable) > >devices, and not restricted to the PCI Root-Bridge use-case. Thus the > >rationale for not using EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION > types. > > > >Changes since v3: > >- Add copyright notice on changed files. > >- Re-order parameters on BmDmaFreeBuffer(), consistent with gBS- > >FreePages(). > > > >Leo Duran (6): > > MdeModulePkg: Add DxeBmDmaLib (BmDmaLib class) library > > ArmVirtPkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > > CorebootPayloadPkg: Resolve BmDmaLib class for PciHostBridgeDxe > >driver > > MdeModulePkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > > OvmfPkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > > MdeModulePkg: Modify PciHostBridgeDxe to use new BmDmaLib class > > library > > > > ArmVirtPkg/ArmVirtQemu.dsc | 2 + > > ArmVirtPkg/ArmVirtQemuKernel.dsc | 2 + > > CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc | 3 + > > CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc | 3 + > > .../Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf | 1 + > > .../Bus/Pci/PciHostBridgeDxe/PciRootBridge.h | 15 +- > > .../Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c | 274 ++++------------ > > MdeModulePkg/Include/Library/BmDmaLib.h | 161 ++++++++++ > > MdeModulePkg/Library/DxeBmDmaLib/DxeBmDmaLib.c | 351 > +++++++++++++++++++++ > > MdeModulePkg/Library/DxeBmDmaLib/DxeBmDmaLib.inf | 41 +++ > > MdeModulePkg/MdeModulePkg.dsc | 3 + > > OvmfPkg/OvmfPkgIa32.dsc | 2 + > > OvmfPkg/OvmfPkgIa32X64.dsc | 2 + > > OvmfPkg/OvmfPkgX64.dsc | 2 + > > 14 files changed, 642 insertions(+), 220 deletions(-) create mode > > 100644 MdeModulePkg/Include/Library/BmDmaLib.h > > create mode 100644 > MdeModulePkg/Library/DxeBmDmaLib/DxeBmDmaLib.c > > create mode 100644 > MdeModulePkg/Library/DxeBmDmaLib/DxeBmDmaLib.inf > > > >-- > >2.7.4 > > > >_______________________________________________ > >edk2-devel mailing list > >edk2-devel@lists.01.org > >https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
