Re: [PATCH v5 0/6] Add translation support to generic PciHostBridge

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

On 3/1/2018 2:57 PM, Heyi Guo wrote:
> Patch v5 inherits the code from RFC v4; we don't restart the version number for
> RFC to PATCH change.
> 
> v5:
> - Patch 4/6: Modify the code according to the comments from Ray.
> - Patch 1/6 and 2/6 are totally new. They add initialization for all fields of
>    PCI_ROOT_BRIDGE_APERTURE temporary variables in PciHostBridgeLib instances, so
>    that they will not suffer from extension of PCI_ROOT_BRIDGE_APERTURE
>    structure.
> - Generate a separate patch (3/6) for PciHostBridgeLib.h change. Though it is a
>    prerequisite for patch 4/6, it does not change the code in PciHostBridge
>    driver and won't cause any build failure or functional issue.
> 
> 
> v4:
> - Modify the code according to the comments from Ray, Laszlo and Ard (Please see
>    the notes of Patch 1/3)
> - Ignore translation of bus in CreateRootBridge.
> 
> 
> v3:
> - Keep definition of Translation consistent in EDKII code: Translation = device
>    address - host address.
> - Patch 2/2 is split into 2 patches (2/3 and 3/3).
> - Refine comments and commit messages to make the code easier to understand.
> 
> 
> v2:
> Changs are made according to the discussion on the mailing list, including:
> 
> - PciRootBridgeIo->Configuration should return CPU view address, as well as
>    PciIo->GetBarAttributes, and Translation Offset should be equal to PCI view
>    address - CPU view address.
> - Add translation offset to PCI_ROOT_BRIDGE_APERTURE structure definition.
> - PciHostBridge driver internally used Base Address is still based on PCI view
>    address, and translation offset = CPU view - PCI view, which follows the
>    definition in ACPI, and not the same as that in UEFI spec.
> 
> Cc: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Cc: Star Zeng <star.zeng@intel.com>
> Cc: Eric Dong <eric.dong@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Maurice Ma <maurice.ma@intel.com>
> Cc: Prince Agyeman <prince.agyeman@intel.com>
> Cc: Benjamin You <benjamin.you@intel.com>
> Cc: Jordan Justen <jordan.l.justen@intel.com>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: Julien Grall <julien.grall@linaro.org>
> 
> Heyi Guo (6):
>    CorebootPayloadPkg/PciHostBridgeLib: Init PCI aperture to 0
>    OvmfPkg/PciHostBridgeLib: Init PCI aperture to 0
>    MdeModulePkg/PciHostBridgeLib.h: add address Translation
>    MdeModulePkg/PciHostBridgeDxe: Add support for address translation
>    MdeModulePkg/PciBus: convert host address to device address
>    MdeModulePkg/PciBus: return CPU address for GetBarAttributes
> 
>   MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.h              |  21 ++++
>   MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostResource.h            |   3 +
>   MdeModulePkg/Include/Library/PciHostBridgeLib.h                    |  19 +++
>   CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeSupport.c |   5 +
>   MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c                             |  12 +-
>   MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c              | 129 +++++++++++++++++---
>   MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c            | 118 ++++++++++++++++--
>   OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c                |   4 +
>   OvmfPkg/Library/PciHostBridgeLib/XenSupport.c                      |   5 +
>   9 files changed, 288 insertions(+), 28 deletions(-)
> 
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

-- 
Thanks,
Ray