Re: [PATCH v7 0/6] Add translation support to generic PciHostBridge

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

On 15 March 2018 at 06:03, Heyi Guo <heyi.guo@linaro.org> wrote:
> Code can also be found here:
> https://github.com/iwishguo/edk2/tree/patch-pci-host-bridge-v7
>
> v7:
> - Patch 4: implement 1 comments from Ray.
>


Thanks Heyi.

I will merge this v7 by the end of today unless anyone objects.

Maurice, Prince, Benjamin: you have had ample time to respond to the
Coreboot changes. I am going to assume that you have no objections
unless you raise them today.

Thanks all,
Ard.



> v6:
> - Patch 1, 2: implement 3 comments from Laszlo.
> - Patch 4: implement 3 comments from Ray.
>
> 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: clear aperture vars for (re)init
>   OvmfPkg/PciHostBridgeLib: clear PCI aperture vars for (re)init
>   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 |   7 +-
>  MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c                             |  12 +-
>  MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c              | 129 ++++++++++++++++---
>  MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c            | 135 ++++++++++++++++++--
>  OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c                |   4 +
>  OvmfPkg/Library/PciHostBridgeLib/XenSupport.c                      |   7 +-
>  9 files changed, 306 insertions(+), 31 deletions(-)
>
> --
> 2.7.4
>