[edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V8] MdePkg/Protocols: New PCI Express Platform Protocol, EFI encodings
Javeed, Ashraf
ashraf.javeed at intel.com
Fri Jan 10 04:00:26 UTC 2020
Hi,
You can also review this patch into the below edk2-staging repo:-
https://github.com/ashrafj/edk2-staging/commit/84ec9f060bab7d5ec97b36367e87124820694934
Thanks
Ashraf
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Javeed,
> Ashraf
> Sent: Friday, January 10, 2020 9:24 AM
> To: devel at edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Gao, Liming
> <liming.gao at intel.com>; Ni, Ray <ray.ni at intel.com>
> Subject: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V8]
> MdePkg/Protocols: New PCI Express Platform Protocol, EFI encodings
>
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1954
>
> Three interfaces added to PCI Express Platform Protocol:-
> (1) GetDevicePolicy() -> to retrieve device-specific platform policies
> (2) NotifyDeviceState() -> to notify platform about device PCI Express
> configuration state
> (3) GetPolicy() -> to retrieve platform policy about the PCI Express
> feature list
> PCI Express Override Protocol is made alias to PCI Express Platform Protocol.
> EFI encodings introduced for the following PCI Express features, are:
> 1. Maximum Payload Size (MPS)
> 2. Maximum Read Request Size (MRRS)
> 3. Extended Tag
> 4. Relax Order Enable
> 5. No Snoop Enable
> 6. ASPM support
> 7. Common Clock Configuration
> 8. Extended SYNC
> 9. Atomic Op
> 10. LTR Enable
> 11. PTM support
> 12. CTO support
> 13. CPM
> 14. L1 PM Substates
>
> New source files with unique definitions are:
> MdePkg/Include/Protocol/PciExpressPlatform.h,
> MdePkg/Include/Protocol/PciExpressOverride.h
>
> Signed-off-by: Ashraf Javeed <ashraf.javeed at intel.com>
> Cc: Michael D Kinney <michael.d.kinney at intel.com>
> Cc: Liming Gao <liming.gao at intel.com>
> Cc: Ray Ni <ray.ni at intel.com>
> ---
>
> In V8: Code Syntax correction made.
>
> In V7: Revised ECR to define additional interface GetPolicy() in the PCI Express
> Platform Protocol / PCI Express Override Protocol, Renamed
> EFI_PCI_EXPRESS_PLATFORM_POLICY to EFI_PCI_EXPRESS_DEVICE_POLICY,
> Removed the reserved fields from the EFI_PCI_EXPRESS_DEVICE_POLICY, added
> input parameter to give the length of input buffer in GetDevicePolicy(), and
> NotifyDeviceState(), introduced new data type
> EFI_PCI_EXPRESS_PLATFORM_POLICY for the interface GetPolicy().
>
> In V6: renamed the protocol definition source files, remove PCD comments, and
> renamed NotifyDeviceConfiguration -> NotifyDeviceState
>
> In V5: Revised ECR to define new PCI Platform Protocol to support the PCI
> Express capability features:- EFI_PCI_EXPRESS_PLATFORM_PROTOCOL,
> EFI_PCI_EXPRESS_OVERRIDE_PROTOCOL.
> Added new interface -> NotifyDeviceConfiguration Added new EFI encodings /
> data types for PCIe features:- CPM, L1 PM substates.
> Enhance the definition of the PCIe feature AtomicOp to support additional
> attribute - Egress blocking of the port.
>
> In V4: Redefinition of the existing interfaces in the EFI_PCI_PLATFORM_-
> PROTOCOL2, to avoid type casting and to avoid further future change
>
> In V3: License update in the header sections of source files
>
> In V2: Correction made to header sections of source files
> ---
> MdePkg/Include/Protocol/PciExpressPlatform.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/MdePkg/Include/Protocol/PciExpressPlatform.h
> b/MdePkg/Include/Protocol/PciExpressPlatform.h
> index 8a28418..dc58268 100644
> --- a/MdePkg/Include/Protocol/PciExpressPlatform.h
> +++ b/MdePkg/Include/Protocol/PciExpressPlatform.h
> @@ -643,11 +643,11 @@ typedef struct {
> **/
> typedef
> EFI_STATUS
> -(EFIAPI * EFI_PCI_EXPRESS_GET_POLICY) {
> +(EFIAPI * EFI_PCI_EXPRESS_GET_POLICY) (
> IN CONST EFI_PCI_EXPRESS_PLATFORM_PROTOCOL *This,
> IN UINTN Size,
> IN OUT EFI_PCI_EXPRESS_PLATFORM_POLICY *PlatformPolicy
> -};
> +);
>
> ///
> /// This protocol provides the interface between the PCI bus driver/PCI Host
> --
> 2.21.0.windows.1
>
>
>
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