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Mon, 29 Jul 2019 12:38:07 +0530 From: "Javeed, Ashraf" To: "devel@edk2.groups.io" , "Javeed, Ashraf" CC: "Kinney, Michael D" , "Gao, Liming" , "Ni, Ray" Subject: Re: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V2] MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol Thread-Topic: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V2] MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol Thread-Index: AQHVRdoslk1AR1PqdkmGSNSw6XLn0qbhK2Ug Date: Mon, 29 Jul 2019 07:08:06 +0000 Message-ID: <95C5C2B113DE604FB208120C742E9824578BF816@BGSMSX101.gar.corp.intel.com> References: <15B5CE29E665BA8A.10483@groups.io> In-Reply-To: <15B5CE29E665BA8A.10483@groups.io> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiYWYyZTMyN2ItYjdlOC00N2NiLWFjYTMtNTZlNjZjZWJhY2MzIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoibUE2Q2ZyRmFVd1lIdFUzVXdneDVPcEhpWTN5SDFEK2tZeTczdFNyaFFKXC9rbDkwQkFmbHM1VXJPTVVZaTVkQUoifQ== x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action x-originating-ip: [10.223.10.10] MIME-Version: 1.0 Return-Path: ashraf.javeed@intel.com Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Remote repository:- https://github.com/ashrafj/edk2-staging This commit:- https://github.com/ashrafj/edk2-staging/commit/be59cc61f29a6= 7d1bc28a768f3673143b02a7a21 Thanks Ashraf > -----Original Message----- > From: devel@edk2.groups.io On Behalf Of Javeed, > Ashraf > Sent: Monday, July 29, 2019 12:22 PM > To: devel@edk2.groups.io > Cc: Kinney, Michael D ; Gao, Liming > ; Ni, Ray > Subject: [edk2-devel] [edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V2] > MdePkg/Protocols: New interface, EFI encodings to PCI Plat protocol >=20 > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D1954 >=20 > 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 Cloc= k > 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 >=20 > Signed-off-by: Ashraf Javeed > Cc: Michael D Kinney > Cc: Liming Gao > Cc: Ray Ni > --- >=20 > In V2: Correction made to header sections of source files > --- > MdePkg/Include/Protocol/PciOverride2.h | 43 > +++++++++++++++++++++++++++++++++++++++++++ > MdePkg/Include/Protocol/PciPlatform2.h | 393 > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > +++ > MdePkg/MdePkg.dec | 6 ++++++ > 3 files changed, 442 insertions(+) >=20 > diff --git a/MdePkg/Include/Protocol/PciOverride2.h > b/MdePkg/Include/Protocol/PciOverride2.h > new file mode 100644 > index 0000000000..a7f541b4c3 > --- /dev/null > +++ b/MdePkg/Include/Protocol/PciOverride2.h > @@ -0,0 +1,43 @@ > +/** @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.
This > + program and the accompanying materials are licensed and made > + available under the terms and conditions of the BSD License which > + accompanies this distribution. The full text of the license may be > + found at http://opensource.org/licenses/bsd-license.php > + > + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" > BASIS, > + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER > EXPRESS OR IMPLIED. > + > + > +**/ > + > +#ifndef _PCI_OVERRIDE2_H_ > +#define _PCI_OVERRIDE2_H_ > + > +/// > +/// EFI_PCI_OVERRIDE_PROTOCOL has the same structure with > +EFI_PCI_PLATFORM_PROTOCOL /// #include > + > +/// > +/// 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..717938e68d > --- /dev/null > +++ b/MdePkg/Include/Protocol/PciPlatform2.h > @@ -0,0 +1,393 @@ > +/** @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.
This > +program and the accompanying materials are licensed and made available > +under the terms and conditions of the BSD License that accompanies this > distribution. > +The full text of the license may be found at > +http://opensource.org/licenses/bsd-license.php. > + > +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS > OR IMPLIED. > + > + > +**/ > + > +#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 > + > +/// > +/// Reuse the existing definition to maintain backward compatibility > +/// #include > + > +/// > +/// 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 futu= re. > +/// > +enum EfiPciPlatformProtocolVersion { > + EFI_PCI_PLATFORM_PROTOCOL_MAJOR_VERSION =3D 1, > + EFI_PCI_PLATFORM_PROTOCOL_MINOR_VERSION =3D 1 }; > + > +/// > +/// Forward declaration for EFI_PCI_PLATFORM_PROTOCOL2. > +/// > +typedef struct _EFI_PCI_PLATFORM_PROTOCOL2 > EFI_PCI_PLATFORM_PROTOCOL2; > + > +/// > +/// 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 128= B > +#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 sp= ecification > 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 applic= able > +#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 overrid= e > +#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 commo= n 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 fo= r > 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 dis= able. > +/// 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 fo= r > 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 fo= r > 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/disab= le. > +/// 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 fo= r > 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 fo= r > 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 definitio= ns 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 5u= s 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 10m= s > 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 enumerati= on. > + > + 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. > + > + @param[in] This Pointer to the EFI_PCI_PLATFORM_PROTOCOL2 > instance. > + @param[in] PciDevice The associated PCI IO Protocol handle of th= e PCI > + device. Type EFI_HANDLE is defined in > + InstallProtocolInterface() in the UEFI 2.1 > + Specification @param[in] PciExtPolicy > + The platform policy with respect to other PCI features > + like, the MPS, MRRS, etc. Type > EFI_PCI_PLATFORM_EXTENDED_POLICY > + is defined in "Related Definitions" below. > + > + > + @retval EFI_SUCCESS The function completed successfully, m= ay 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 ini= tialization. > + /// > + 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 locatio= n. > + /// > + EFI_PCI_PLATFORM_GET_PCI_ROM GetPciRom; > + /// > + /// Retrieves the PCI device-specific platform policy regarding enume= ration. > + /// > + 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 =3D { 0xb5b35764, 0x460c, 0x4a06, {0x9= 9, 0xfc, > 0x77, 0xa1, 0x7c, 0x1b, 0x5c, 0xeb }} >=20 > + ## Include/Protocol/PciPlatform2.h > + gEfiPciPlatformProtocol2Guid =3D { 0x787b0367, 0xa945, 0x4d60, { 0= x8d, > 0x34, 0xb9, 0xd1, 0x88, 0xd2, 0xd0, 0xb6 }} > + > + ## Include/Protocol/PciOverride2.h > + gEfiPciOverrideProtocol2Guid =3D { 0xb9d5ea1, 0x66cb, 0x4546, { 0x= b0, 0xbb, > 0x5c, 0x6d, 0xae, 0xd9, 0x42, 0x47 }} > + > ## Include/Protocol/PciEnumerationComplete.h > gEfiPciEnumerationCompleteProtocolGuid =3D { 0x30cfe3e7, 0x3de1, 0= x4586, > {0xbe, 0x20, 0xde, 0xab, 0xa1, 0xb3, 0xb7, 0x93}} >=20 > -- > 2.21.0.windows.1 >=20 >=20 >=20