* Re: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V3] MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol
2019-07-31 3:59 ` [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V3] MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol Javeed, Ashraf
@ 2019-07-31 6:54 ` Liming Gao
0 siblings, 0 replies; 2+ messages in thread
From: Liming Gao @ 2019-07-31 6:54 UTC (permalink / raw)
To: Javeed, Ashraf, devel@edk2.groups.io; +Cc: Kinney, Michael D, Ni, Ray
Ashraf:
Thanks for your update. The change is good to be added into edk2-staging.
Reviewed-by: Liming Gao <liming.gao@intel.com>
Thanks
Liming
>-----Original Message-----
>From: Javeed, Ashraf
>Sent: Wednesday, July 31, 2019 11:59 AM
>To: devel@edk2.groups.io; Javeed, Ashraf <ashraf.javeed@intel.com>
>Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming
><liming.gao@intel.com>; Ni, Ray <ray.ni@intel.com>
>Subject: RE: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V3]
>MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol
>
>Remote repository:- https://github.com/ashrafj/edk2-staging
>This commit:- https://github.com/ashrafj/edk2-
>staging/commit/d6739d988f6e43b26f7417e2cdb8fe9103607623
>
>Regards
>Ashraf
>
>
>> -----Original Message-----
>> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Javeed,
>> Ashraf
>> Sent: Wednesday, July 31, 2019 9:20 AM
>> To: devel@edk2.groups.io
>> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming
>> <liming.gao@intel.com>; Ni, Ray <ray.ni@intel.com>
>> Subject: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V3]
>> MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol
>>
>> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1954
>>
>> New interface added to PCI Platform Protocol / PCI Override Protocol to
>> retrieve device-specific platform policy for the following PCI standard
>features,
>> like Maximum Payload Size (MPS), Maximum Read Request Size
>> (MRRS),Extended Tags, Relax Order, No-Snoop, Active State Power
>> Management (ASPM),Latency Time Reporting (LTR), AtomicOp, Reference
>Clock
>> Configuration, Extended SYNCH, PTM support, and Completion Timeout
>(CTO).
>> New source files added with enhanced definitions are in:
>> MdePkg/Include/Protocol/PciPlatform2.h,
>> MdePkg/Include/Protocol/PciOverride2.h
>>
>> Signed-off-by: Ashraf Javeed <ashraf.javeed@intel.com>
>> Cc: Michael D Kinney <michael.d.kinney@intel.com>
>> Cc: Liming Gao <liming.gao@intel.com>
>> Cc: Ray Ni <ray.ni@intel.com>
>> ---
>>
>> In V3: License update in the header sections of source files
>>
>> In V2: Correction made to header sections of source files
>> ---
>> MdePkg/Include/Protocol/PciOverride2.h | 37
>> +++++++++++++++++++++++++++++++++++++
>> MdePkg/Include/Protocol/PciPlatform2.h | 394
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>++++++
>> ++++
>> MdePkg/MdePkg.dec | 6 ++++++
>> 3 files changed, 437 insertions(+)
>>
>> diff --git a/MdePkg/Include/Protocol/PciOverride2.h
>> b/MdePkg/Include/Protocol/PciOverride2.h
>> new file mode 100644
>> index 0000000000..7e878a4f1e
>> --- /dev/null
>> +++ b/MdePkg/Include/Protocol/PciOverride2.h
>> @@ -0,0 +1,37 @@
>> +/** @file
>> + This file declares EFI PCI Override protocol which provides the
>> +interface between
>> + the PCI bus driver/PCI Host Bridge Resource Allocation driver and an
>> +implementation's
>> + driver to describe the unique features of a platform.
>> + This protocol is optional.
>> +
>> +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>> +SPDX-License-Identifier: BSD-2-Clause-Patent
>> +
>> +
>> +**/
>> +
>> +#ifndef _PCI_OVERRIDE2_H_
>> +#define _PCI_OVERRIDE2_H_
>> +
>> +///
>> +/// EFI_PCI_OVERRIDE_PROTOCOL has the same structure with
>> +EFI_PCI_PLATFORM_PROTOCOL /// #include <Protocol/PciPlatform2.h>
>> +
>> +///
>> +/// Global ID for the EFI_PCI_OVERRIDE_PROTOCOL /// #define
>> +EFI_PCI_OVERRIDE2_GUID \
>> + { \
>> + 0xb9d5ea1, 0x66cb, 0x4546, {0xb0, 0xbb, 0x5c, 0x6d, 0xae, 0xd9,
>> +0x42, 0x47} \
>> + }
>> +
>> +///
>> +/// Declaration for EFI_PCI_OVERRIDE_PROTOCOL /// typedef
>> +EFI_PCI_PLATFORM_PROTOCOL2 EFI_PCI_OVERRIDE_PROTOCOL2;
>> +
>> +
>> +extern EFI_GUID gEfiPciOverrideProtocol2Guid;
>> +
>> +#endif
>> diff --git a/MdePkg/Include/Protocol/PciPlatform2.h
>> b/MdePkg/Include/Protocol/PciPlatform2.h
>> new file mode 100644
>> index 0000000000..814734c108
>> --- /dev/null
>> +++ b/MdePkg/Include/Protocol/PciPlatform2.h
>> @@ -0,0 +1,394 @@
>> +/** @file
>> + This file declares PCI Platform Protocol that provide the interface
>> +between
>> + the PCI bus driver/PCI Host Bridge Resource Allocation driver and a
>> +platform-specific
>> + driver to describe the unique features of a platform.
>> + This protocol is optional.
>> +
>> +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>> +SPDX-License-Identifier: BSD-2-Clause-Patent
>> +
>> +
>> +**/
>> +
>> +#ifndef _PCI_PLATFORM2_H_
>> +#define _PCI_PLATFORM2_H_
>> +
>> +///
>> +/// This file must be included because the
>EFI_PCI_PLATFORM_PROTOCOL2
>> +uses /// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE.
>> +///
>> +#include <Protocol/PciHostBridgeResourceAllocation.h>
>> +
>> +///
>> +/// Reuse the existing definition to maintain backward compatibility
>> +/// #include <Protocol/PciPlatform.h>
>> +
>> +///
>> +/// Global ID for the EFI_PCI_PLATFORM_PROTOCOL2.
>> +///
>> +#define EFI_PCI_PLATFORM_PROTOCOL2_GUID \
>> + { \
>> + 0x787b0367, 0xa945, 0x4d60, {0x8d, 0x34, 0xb9, 0xd1, 0x88, 0xd2,
>> +0xd0, 0xb6} \
>> + }
>> +
>> +///
>> +/// As per the present definition and specification of this protocol,
>> +the major /// version is 1, and minor version is 1. Any driver
>> +utilizing this protocol /// shall use these versions number to maintain
>> +the backward compatibility as /// per its specification changes in future.
>> +///
>> +enum EfiPciPlatformProtocolVersion {
>> + EFI_PCI_PLATFORM_PROTOCOL_MAJOR_VERSION = 1,
>> + EFI_PCI_PLATFORM_PROTOCOL_MINOR_VERSION = 1 };
>> +
>> +///
>> +/// Forward declaration for EFI_PCI_PLATFORM_PROTOCOL2.
>> +///
>> +typedef struct _EFI_PCI_PLATFORM_PROTOCOL2
>> EFI_PCI_PLATFORM_PROTOCOL2;
>> +
>> +///
>> +/// Related Definitions
>> +///
>> +
>> +///
>> +/// Following are the data types for
>EFI_PCI_PLATYFORM_EXTENDED_POLICY
>> +/// each for the PCI standard feature and its corresponding bitmask ///
>> +representing the valid combinations of PCI attributes ///
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature Maximum Payload Size (MPS). Refer to PCI
>> +Base Specification /// 4, (chapter 7.5.3.4) on how to translate the
>> +below EFI encodings as per the /// PCI hardware terminology. If this
>> +data member value is returned as 0 than /// there is no platform policy
>> +to override, this feature would be enabled as /// per its PCI
>> +specification based on the device capabilities. Below is it /// data
>> +type and the macro definitions which the driver uses for interpreting ///
>the
>> platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_MAX_PAYLOAD_SIZE;
>> +
>> +#define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_AUTO 0x00 //No request
>for
>> override
>> +#define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_128B 0x01 //set to default
>128B
>> +#define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_256B 0x02 //set to 256B if
>> applicable
>> +#define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_512B 0x03 //set to 512B if
>> applicable
>> +#define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_1024B 0x04 //set to 1024B
>if
>> +applicable #define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_2048B 0x05 //set
>to
>> +2048B if applicable #define EFI_PCI_CONF_MAX_PAYLOAD_SIZE_4096B
>0x06
>> +//set to 4096B if applicable
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature Maximum Read Request Size (MRRS). Refer
>> +to PCI Base /// Specification 4, (chapter 7.5.3.4) on how to translate
>> +the below EFI /// encodings as per the PCI hardware terminology. If
>> +this data member value /// is returned as 0 than there is no platform
>> +policy to override, this feature /// would be enabled as per its PCI
>specification
>> based on the device capabilities.
>> +/// Below is it data type and the macro definitions which the driver
>> +uses for /// interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_MAX_READ_REQ_SIZE;
>> +
>> +#define EFI_PCI_CONF_MAX_READ_REQ_SIZE_AUTO 0x00 //No request
>for
>> +override #define EFI_PCI_CONF_MAX_READ_REQ_SIZE_128B 0x01 //set
>to
>> +default 128B #define EFI_PCI_CONF_MAX_READ_REQ_SIZE_256B 0x02
>//set
>> +to 256B if applicable #define EFI_PCI_CONF_MAX_READ_REQ_SIZE_512B
>0x03
>> +//set to 512B if applicable #define
>> +EFI_PCI_CONF_MAX_READ_REQ_SIZE_1024B 0x04 //set to 1024B if
>applicable
>> +#define EFI_PCI_CONF_MAX_READ_REQ_SIZE_2048B 0x05 //set to 2048B
>if
>> +applicable #define EFI_PCI_CONF_MAX_READ_REQ_SIZE_4096B 0x06
>//set to
>> +4096B if applicable
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature Extended Tags. Refer to PCI Base
>> +Specification /// 4, (chapter 7.5.3.4) on how to translate the below
>> +EFI encodings as per the /// PCI hardware terminology. If this data
>> +member value is returned as 0 than /// there is no platform policy to
>> +override, this feature would be enabled as /// per its PCI
>> +specification based on the device capabilities. Below is it /// data
>> +type and the macro definitions which the driver uses for interpreting ///
>the
>> platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_EXTENDED_TAG;
>> +
>> +#define EFI_PCI_CONF_EXTENDED_TAG_AUTO 0x00 //No request for
>> override
>> +#define EFI_PCI_CONF_EXTENDED_TAG_5BIT 0x01 //set to default 5-bit
>> +#define EFI_PCI_CONF_EXTENDED_TAG_8BIT 0x02 //set to 8-bit if
>applicable
>> +#define EFI_PCI_CONF_EXTENDED_TAG_10BIT 0x03 //set to 10-bit if
>> +applicable
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe link's Active State Power Mgmt
>> +(ASPM). Refer to PCI Base /// Specification 4, (chapter 7.5.3.7) on how
>> +to translate the below EFI /// encodings as per the PCI hardware
>> +terminology. If this data member value /// is returned as 0 than there
>> +is no platform policy to override, this feature /// would be enabled as per
>its
>> PCI specification based on the device capabilities.
>> +/// Below is it data type and the macro definitions which the driver
>> +uses for /// interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_ASPM_SUPPORT;
>> +
>> +#define EFI_PCI_CONF_ASPM_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_ASPM_DISABLE 0x01 //set to default disable
>state
>> +#define EFI_PCI_CONF_ASPM_L0s_SUPPORT 0x02 //set to L0s state
>> +#define EFI_PCI_CONF_ASPM_L1_SUPPORT 0x03 //set to L1 state
>> +#define EFI_PCI_CONF_ASPM_L0S_L1_SUPPORT 0x04 //set to L0s and L1
>> +state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's Relax Ordering
>> +enable/disable. Refer to PCI Base /// Specification 4, (chapter
>> +7.5.3.4) on how to translate the below EFI /// encodings as per the PCI
>> +hardware terminology. If this data member value /// is returned as 0
>> +than there is no platform policy to override, this feature /// would be
>enabled
>> as per its PCI specification based on the device capabilities.
>> +/// Below is it data type and the macro definitions which the driver
>> +uses for /// interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_RELAX_ORDER;
>> +
>> +#define EFI_PCI_CONF_RO_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_RO_DISABLE 0x01 //set to default disable state
>> +#define EFI_PCI_CONF_RO_ENABLE 0x02 //set to enable state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's No-Snoop enable/disable.
>> +Refer to PCI Base /// Specification 4, (chapter 7.5.3.4) on how to
>> +translate the below EFI /// encodings as per the PCI hardware
>> +terminology. If this data member value /// is returned as 0 than there
>> +is no platform policy to override, this feature /// would be enabled as per
>its
>> PCI specification based on the device capabilities.
>> +/// Below is it data type and the macro definitions which the driver
>> +uses for /// interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_NO_SNOOP;
>> +
>> +#define EFI_PCI_CONF_NS_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_NS_DISABLE 0x01 //set to default disable state
>> +#define EFI_PCI_CONF_NS_ENABLE 0x02 //set to enable state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe link's Clock configuration is common or
>> discrete.
>> +/// Refer to PCI Base Specification 4, (chapter 7.5.3.7) on how to
>> +translate the /// below EFI encodings as per the PCI hardware
>> +terminology. If this data member /// value is returned as 0 than there
>> +is no platform policy to override, this /// feature would be enabled as
>> +per its PCI specification based on the device /// capabilities. Below
>> +is its data type and the macro definitions which the /// driver uses for
>> interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_COMMON_CLOCK_CFG;
>> +
>> +#define EFI_PCI_CONF_CLK_CFG_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_CLK_CFG_ASYNCH 0x01 //set to default
>> asynchronous clock
>> +#define EFI_PCI_CONF_CLK_CFG_COMMON 0x02 //set to common clock
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe link's Extended Synch enable or disable.
>> +/// Refer to PCI Base Specification 4, (chapter 7.5.3.7) on how to
>> +translate the /// below EFI encodings as per the PCI hardware
>> +terminology. If this data member /// value is returned as 0 than there
>> +is no platform policy to override, this /// feature would be enabled as
>> +per its PCI specification based on the device /// capabilities. Below
>> +is its data type and the macro definitions which the /// driver uses for
>> interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_EXTENDED_SYNCH;
>> +
>> +#define EFI_PCI_CONF_EXT_SYNCH_AUTO 0x00 //No request for
>override
>> +#define EFI_PCI_CONF_EXT_SYNCH_DISABLE 0x01 //set to default disable
>> +state #define EFI_PCI_CONF_EXT_SYNCH_ENABLE 0x02 //set to enable
>> +state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's AtomicOp Requester enable
>or
>> disable.
>> +/// Refer to PCI Base Specification 4, (chapter 7.5.3.16) on how to
>> +translate the /// below EFI encodings as per the PCI hardware
>> +terminology. If this data member /// value is returned as 0 than there
>> +is no platform policy to override, this /// feature would be enabled as
>> +per its PCI specification based on the device /// capabilities. Below
>> +is its data type and the macro definitions which the /// driver uses for
>> interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_ATOMIC_OP;
>> +
>> +#define EFI_PCI_CONF_ATOMIC_OP_AUTO 0x00 //No request for
>override
>> +#define EFI_PCI_CONF_ATOMIC_OP_DISABLE 0x01 //set to default
>disable
>> +state #define EFI_PCI_CONF_ATOMIC_OP_ENABLE 0x02 //set to enable
>> +state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's LTR Mechanism
>enable/disable.
>> +/// Refer to PCI Base Specification 4, (chapter 7.5.3.16) on how to
>> +translate the /// below EFI encodings as per the PCI hardware
>> +terminology. If this data member /// value is returned as 0 than there
>> +is no platform policy to override, this /// feature would be enabled as
>> +per its PCI specification based on the device /// capabilities. Below
>> +is its data type and the macro definitions which the /// driver uses for
>> interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_LTR;
>> +
>> +#define EFI_PCI_CONF_LTR_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_LTR_DISABLE 0x01 //set to default disable state
>> +#define EFI_PCI_CONF_LTR_ENABLE 0x02 //set to enable state
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's Precision Time Measurement
>> (PTM) enable/disable.
>> +/// Refer to PCI Base Specification 4, (chapter 7.5.3.16) on how to
>> +translate the /// below EFI encodings as per the PCI hardware
>> +terminology. If this data member /// value is returned as 0 than there
>> +is no platform policy to override, this /// feature would be enabled as
>> +per its PCI specification based on the device /// capabilities. Below
>> +is its data type and the macro definitions which the /// driver uses for
>> interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_PTM;
>> +
>> +#define EFI_PCI_CONF_PTM_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_PTM_DISABLE 0x01 //set to default disable state
>> +#define EFI_PCI_CONF_PTM_ENABLE 0x02 //set to enable state only
>> +#define EFI_PCI_CONF_PTM_ROOT_SEL 0x02 //set to root select &
>enable
>> +
>> +///
>> +/// This data type is to retrieve the PCI device platform policy for
>> +the PCI- /// compliant feature PCIe Device's Completion Timeout (CTO)
>> +set to supported ranges /// or disable. Refer to PCI Base Specification
>> +4, (chapter 7.5.3.16) on how to /// translate the below EFI encodings
>> +as per the PCI hardware terminology. If this /// data member value is
>> +returned as 0 than there is no platform policy to override, /// this
>> +feature would be enabled as per its PCI specification based on the
>> +device /// capabilities. Below is its data type and the macro definitions
>which
>> the /// driver uses for interpreting the platform policy.
>> +///
>> +typedef UINT8 EFI_PCI_CONF_CTO_SUPPORT;
>> +
>> +#define EFI_PCI_CONF_CTO_AUTO 0x00 //No request for override
>> +#define EFI_PCI_CONF_CTO_DEFAULT 0x01 //set to default range of 5us
>to
>> 50ms if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_A1 0x02 //set to range of 50us to
>> 100us if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_A2 0x03 //set to range of 1ms to
>10ms
>> if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_B1 0x04 //set to range of 16ms to
>> 55ms if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_B2 0x05 //set to range of 65ms to
>> 210ms if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_C1 0x06 //set to range of 260ms to
>> 900ms if applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_C2 0x07 //set to range of 1s to 3.5s
>if
>> applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_D1 0x08 //set to range of 4s to 13s
>if
>> applicable
>> +#define EFI_PCI_CONF_CTO_RANGE_D2 0x09 //set to range of 17s to
>64s if
>> applicable
>> +#define EFI_PCI_CONF_CTO_DET_DISABLE 0x10 //set to CTO detection
>> +disable if applicable
>> +
>> +///
>> +/// Reserves for future use
>> +///
>> +typedef UINT8 EFI_PCI_CONF_RESERVES;
>> +
>> +///
>> +/// The EFI_PCI_PLATYFORM_EXTENDED_POLICY is altogether 128-byte
>size,
>> +with each /// byte field representing one PCI standerd feature defined
>> +in the PCI Express Base /// Specification 4.0, version 1.0.
>> +///
>> +typedef struct {
>> + EFI_PCI_CONF_MAX_PAYLOAD_SIZE DeviceCtlMPS;
>> + EFI_PCI_CONF_MAX_READ_REQ_SIZE DeviceCtlMRRS;
>> + EFI_PCI_CONF_EXTENDED_TAG DeviceCtlExtTag;
>> + EFI_PCI_CONF_RELAX_ORDER DeviceCtlRelaxOrder;
>> + EFI_PCI_CONF_NO_SNOOP DeviceCtlNoSnoop;
>> + EFI_PCI_CONF_ASPM_SUPPORT LinkCtlASPMState;
>> + EFI_PCI_CONF_COMMON_CLOCK_CFG LinkCtlCommonClkCfg;
>> + EFI_PCI_CONF_EXTENDED_SYNCH LinkCtlExtSynch;
>> + EFI_PCI_CONF_ATOMIC_OP DeviceCtl2AtomicOp;
>> + EFI_PCI_CONF_LTR DeviceCtl2LTR;
>> + EFI_PCI_CONF_PTM PTMControl;
>> + EFI_PCI_CONF_CTO_SUPPORT CTOsupport;
>> + EFI_PCI_CONF_RESERVES Reserves[116];
>> +} EFI_PCI_PLATFORM_EXTENDED_POLICY;
>> +
>> +/**
>> + Retrieves the PCI device-specific platform policy regarding enumeration.
>> +
>> + The PCI Bus driver and PCI Host Bridge Resource Allocation Protocol
>> + drivers can call this member function to retrieve the platform
>> + policies specific to PCI device, regarding the PCI enumeration.
>> +
>> + The GetDevicePolicy() function retrieves the platform policy for a
>> + particular component regarding PCI enumeration. The PCI bus driver
>> + and the PCI Host Bridge Resource Allocation Protocol driver can call
>> + this member function to retrieve the policy.
>> + The existing GetPlatformPolicy() member function is used by the PCI
>> + Bus driver to program the legacy ranges, the data that is returned by
>> + that member function determines the supported attributes that are
>> + returned by the
>> + EFI_PCI_IO_PROTOCOL.Attributes() function.
>> + The GetDevicePolicy() member function is meant to return data about
>> + other PCI compliant features which would be supported by the PCI Bus
>> + driver in future; like for example the MPS, MRRS, Extended Tag, ASPM,
>> + etc. The details about this PCI features can be obtained from the PCI
>> + Base Specification 4.x. The EFI encodings for these feature are
>> + defined in the EFI_PCI_PLATFORM_EXTENDED_POLICY, see the Related
>> Definition section for this.
>> + This member function will use the associated EFI handle of the PCI IO
>> + Protocol to determine the physical PCI device within the chipset, to
>> + return its device-specific platform policies. It is caller's
>> + responsibility to allocate the buffer and pass its pointer to this
>> + member function, to get its device- specific policy data.
>> +
>> + @param[in] This Pointer to the EFI_PCI_PLATFORM_PROTOCOL2
>> instance.
>> + @param[in] PciDevice The associated PCI IO Protocol handle of the PCI
>> + device. Type EFI_HANDLE is defined in
>> + InstallProtocolInterface() in the UEFI 2.1
>> + Specification @param[in] PciExtPolicy
>> + The pointer to platform policy with respect to other
>> + PCI features like, the MPS, MRRS, etc. Type
>> + EFI_PCI_PLATFORM_EXTENDED_POLICY is defined in
>> + "Related Definitions" above.
>> +
>> +
>> + @retval EFI_SUCCESS The function completed successfully, may
>returns
>> + platform policy data for the given PCI component
>> + @retval EFI_UNSUPPORTED PCI component belongs to PCI topology
>but
>> not
>> + part of chipset to provide the
>> + platform policy @retval EFI_INVALID_PARAMETER If any of the input
>> parameters are passed with
>> + invalid data
>> +
>> + **/
>> +typedef
>> +EFI_STATUS
>> +(EFIAPI * EFI_PCI_PLATFORM_GET_DEVICE_POLICY) (
>> + IN CONST EFI_PCI_PLATFORM_PROTOCOL2 *This,
>> + IN EFI_HANDLE PciDevice,
>> + OUT EFI_PCI_PLATFORM_EXTENDED_POLICY *PciExtPolicy
>> +);
>> +
>> +///
>> +/// This protocol provides the interface between the PCI bus driver/PCI
>> +Host /// Bridge Resource Allocation driver and a platform-specific
>> +driver to describe /// the unique features of a platform.
>> +///
>> +struct _EFI_PCI_PLATFORM_PROTOCOL2 {
>> + ///
>> + /// The notification from the PCI bus enumerator to the platform that
>> +it is about to
>> + /// enter a certain phase during the enumeration process.
>> + ///
>> + EFI_PCI_PLATFORM_PHASE_NOTIFY PlatformNotify;
>> + ///
>> + /// The notification from the PCI bus enumerator to the platform for
>> +each PCI
>> + /// controller at several predefined points during PCI controller
>initialization.
>> + ///
>> + EFI_PCI_PLATFORM_PREPROCESS_CONTROLLER PlatformPrepController;
>> + ///
>> + /// Retrieves the platform policy regarding enumeration.
>> + ///
>> + EFI_PCI_PLATFORM_GET_PLATFORM_POLICY GetPlatformPolicy;
>> + ///
>> + /// Gets the PCI device's option ROM from a platform-specific location.
>> + ///
>> + EFI_PCI_PLATFORM_GET_PCI_ROM GetPciRom;
>> + ///
>> + /// Retrieves the PCI device-specific platform policy regarding
>enumeration.
>> + ///
>> + EFI_PCI_PLATFORM_GET_DEVICE_POLICY GetDevicePolicy;
>> + ///
>> + /// The major version of this PCI Platform Protocol
>> + ///
>> + UINT8 MajorVersion;
>> + ///
>> + /// The minor version of this PCI Platform Protocol
>> + ///
>> + UINT8 MinorVersion;
>> +
>> +};
>> +
>> +extern EFI_GUID gEfiPciPlatformProtocol2Guid;
>> +
>> +#endif
>> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index
>> b382efd578..670b448031 100644
>> --- a/MdePkg/MdePkg.dec
>> +++ b/MdePkg/MdePkg.dec
>> @@ -1013,6 +1013,12 @@
>> ## Include/Protocol/PciOverride.h
>> gEfiPciOverrideProtocolGuid = { 0xb5b35764, 0x460c, 0x4a06, {0x99, 0xfc,
>> 0x77, 0xa1, 0x7c, 0x1b, 0x5c, 0xeb }}
>>
>> + ## Include/Protocol/PciPlatform2.h
>> + gEfiPciPlatformProtocol2Guid = { 0x787b0367, 0xa945, 0x4d60, { 0x8d,
>> 0x34, 0xb9, 0xd1, 0x88, 0xd2, 0xd0, 0xb6 }}
>> +
>> + ## Include/Protocol/PciOverride2.h
>> + gEfiPciOverrideProtocol2Guid = { 0xb9d5ea1, 0x66cb, 0x4546, { 0xb0,
>0xbb,
>> 0x5c, 0x6d, 0xae, 0xd9, 0x42, 0x47 }}
>> +
>> ## Include/Protocol/PciEnumerationComplete.h
>> gEfiPciEnumerationCompleteProtocolGuid = { 0x30cfe3e7, 0x3de1,
>0x4586,
>> {0xbe, 0x20, 0xde, 0xab, 0xa1, 0xb3, 0xb7, 0x93}}
>>
>> --
>> 2.21.0.windows.1
>>
>>
>>
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