[edk2-devel] [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions

Chang, Abner via groups.io posted 1 patch 1 year, 2 months ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/edk2 tags/patchew/20230323150517.1403-1-abner.chang@amd.com
There is a newer version of this series
MdePkg/Include/IndustryStandard/Mctp.h | 138 +++++++++++++++++++++++++
1 file changed, 138 insertions(+)
create mode 100644 MdePkg/Include/IndustryStandard/Mctp.h
[edk2-devel] [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
Posted by Chang, Abner via groups.io 1 year, 2 months ago
From: Abner Chang <abner.chang@amd.com>

BZ #4355
This change adds definitions for DMTF MCTP
base specification.

Spec ref:
https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.1.pdf

Signed-off-by: Abner Chang <abner.chang@amd.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Nickle Wang <nicklew@nvidia.com>
Cc: Igor Kulchytskyy <igork@ami.com>
Cc: Isaac Oram <isaac.w.oram@intel.com>
Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
Acked-by: Isaac Oram <isaac.w.oram@intel.com>
---
 MdePkg/Include/IndustryStandard/Mctp.h | 138 +++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 MdePkg/Include/IndustryStandard/Mctp.h

diff --git a/MdePkg/Include/IndustryStandard/Mctp.h b/MdePkg/Include/IndustryStandard/Mctp.h
new file mode 100644
index 00000000000..bfbc843c7f1
--- /dev/null
+++ b/MdePkg/Include/IndustryStandard/Mctp.h
@@ -0,0 +1,138 @@
+/** @file
+
+  The definitions of DMTF Management Component Transport Protocol (MCTP)
+  Base Specification.
+
+  Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Revision Reference:
+  DMTF Management Component Transport Protocol (MCTP) Base Specification
+  Version 1.3.1
+  https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.1.pdf
+**/
+
+#ifndef MCTP_H_
+#define MCTP_H_
+
+///
+/// Definitions of endpoint ID
+///
+#define MCTP_NULL_DESTINATION_ENDPOINT_ID  0
+#define MCTP_NULL_SOURCE_ENDPOINT_ID       0
+#define MCTP_RESERVED_ENDPOINT_START_ID    1
+#define MCTP_RESERVED_ENDPOINT_END_ID      7
+#define MCTP_BROADCAST_ENDPOINT_ID         0xFF
+
+/// Minimum transmission size is 64 bytes.
+/// The value of 64 is defined in MCTP Base Specification.
+#define MCTP_BASELINE_MINIMUM_UNIT_TRANSMISSION_SIZE  0x40
+
+///
+/// The 32-bit Header of MCTP packet.
+///
+typedef union {
+  struct {
+    UINT8    HeaderVersion         : 4; ///< The version of header.
+    UINT8    Reserved              : 4; ///< Reserved for future definitions.
+    UINT8    DestinationEndpointId : 8; ///< Destination endpoint Id (EID).
+    UINT8    SourceEndpointIdId    : 8; ///< Source endpoint Id (EID)
+    UINT8    MessageTag            : 3; ///< Check the MCTP Base specification for the
+                                        ///< usages.
+    UINT8    TagOwner              : 1; ///< Tag owner identifies the message was
+                                        ///< originated by the source EID or
+                                        ///< destination EID.
+    UINT8    PacketSequence        : 2; ///< Sequence number increments Modulo 4 on
+                                        ///< each packet.
+    UINT8    EndOfMessage          : 1; ///< Indicates the last packet of message.
+    UINT8    StartOfMessage        : 1; ///< Indicates the first packet of message.
+  } Bits;
+  UINT32    Header;
+} MCTP_TRANSPORT_HEADER;
+
+///
+/// The 8-bit Message Header of MCTP packet.
+///
+typedef union {
+  struct {
+    UINT8    MessageType   : 7;
+    UINT8    ItegrityCheck : 1;
+  } Bits;
+  UINT8    MessageHeader;
+} MCTP_MESSAGE_HEADER;
+
+///
+/// MCTP Control Commands
+///
+#define   MCTP_CONTROL_RESERVED                            0x00
+#define   MCTP_CONTROL_SET_ENDPOINT_ID                     0x01
+#define   MCTP_CONTROL_GET_ENDPOINT_ID                     0x02
+#define   MCTP_CONTROL_GET_ENDPOINT_UUID                   0x03
+#define   MCTP_CONTROL_GET_MCTP_VERSION_SUPPORT            0x04
+#define   MCTP_CONTROL_GET_MESSAGE_TYPE_SUPPORT            0x05
+#define   MCTP_CONTROL_GET_VENDOR_DEFINED_MESSAGE_SUPPORT  0x06
+#define   MCTP_CONTROL_RESOLVE_ENDPOINT_ID                 0x07
+#define   MCTP_CONTROL_ALLOCATE_ENDPOINT_IDS               0x08
+#define   MCTP_CONTROL_ROUTING_INFORMATION_UPDATE          0x09
+#define   MCTP_CONTROL_GET_ROUTINE_TABLE_ENTRIES           0x0A
+#define   MCTP_CONTROL_PREPARE_FOR_ENDPOINT_DISCOVERY      0x0B
+#define   MCTP_CONTROL_ENDPOINT_DISCOVERY                  0x0C
+#define   MCTP_CONTROL_DISCOVERY_NOTIFY                    0x0D
+#define   MCTP_CONTROL_GET_NETWORK_ID                      0x0E
+#define   MCTP_CONTROL_QUERY_HOP                           0x0F
+#define   MCTP_CONTROL_RESOLVE_UUID                        0x10
+#define   MCTP_CONTROL_QUERY_RATE_LIMIT                    0x11
+#define   MCTP_CONTROL_REQUEST_TX_RATE_LIMIT               0x12
+#define   MCTP_CONTROL_UPDATE_RATE_LIMIT                   0x13
+#define   MCTP_CONTROL_QUERY_SUPPORTED_INTERFACES          0x14
+#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_START            0xF0
+#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_END              0xFF
+
+///
+/// MCTP Control Message Completion Codes
+///
+#define   MCTP_CONTROL_COMPLETION_CODES_SUCCESS                 0x00
+#define   MCTP_CONTROL_COMPLETION_CODES_ERROR                   0x01
+#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_DATA      0x02
+#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_LENGTH    0x03
+#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_NOT_READY         0x04
+#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_UNSUPPORTED_CMD   0x05
+#define   MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_START  0x80
+#define   MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_END    0xFF
+
+///
+/// MCTP Control Message Types
+///
+#define   MCTP_MESSAGE_TYPE_CONTROL              0x00
+#define   MCTP_MESSAGE_TYPE_PLDM                 0x01
+#define   MCTP_MESSAGE_TYPE_NCSI                 0x02
+#define   MCTP_MESSAGE_TYPE_ETHERNET             0x03
+#define   MCTP_MESSAGE_TYPE_NVME                 0x04
+#define   MCTP_MESSAGE_TYPE_SPDM                 0x05
+#define   MCTP_MESSAGE_TYPE_SECURE_MESSAGE       0x06
+#define   MCTP_MESSAGE_TYPE_CXL_FM_API           0x07
+#define   MCTP_MESSAGE_TYPE_CXL_CCI              0x08
+#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_PCI   0x7E
+#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_IANA  0x7F
+
+#define   MCTP_ENDPOINT_ID_NULL            0
+#define   MCTP_ENDPOINT_ID_RESERVED_START  1
+#define   MCTP_ENDPOINT_ID_RESERVED_END    7
+#define   MCTP_ENDPOINT_ID_BROADCAST       0xff
+///
+/// MCTP Control Message Format
+///
+typedef struct {
+  struct {
+    UINT8    IntegrityCheck : 1; ///< Message integrity check.
+    UINT8    MessageType    : 7; ///< Message type.
+    UINT8    RequestBit     : 1; ///< Request bit.
+    UINT8    DatagramBit    : 1; ///< Datagram bit.
+    UINT8    Reserved       : 1; ///< Reserved bit.
+    UINT8    InstanceId     : 5; ///< Instance ID.
+    UINT8    CommandCode    : 8; ///< Command code of request message.
+    UINT8    CompletionCode : 8; ///< Completion code in response message.
+  } Bits;
+  UINT32    BodyHeader;
+} MCTP_CONTROL_MESSAGE;
+#endif
-- 
2.37.1.windows.1



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Re: [edk2-devel] [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
Posted by Michael D Kinney 1 year, 2 months ago

> -----Original Message-----
> From: abner.chang@amd.com <abner.chang@amd.com>
> Sent: Thursday, March 23, 2023 8:05 AM
> To: devel@edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu@intel.com>;
> Nickle Wang <nicklew@nvidia.com>; Igor Kulchytskyy <igork@ami.com>; Oram, Isaac W <isaac.w.oram@intel.com>; Abdul Lateef Attar
> <AbdulLateef.Attar@amd.com>
> Subject: [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
> 
> From: Abner Chang <abner.chang@amd.com>
> 
> BZ #4355
> This change adds definitions for DMTF MCTP
> base specification.
> 
> Spec ref:
> https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.1.pdf
> 
> Signed-off-by: Abner Chang <abner.chang@amd.com>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> Cc: Nickle Wang <nicklew@nvidia.com>
> Cc: Igor Kulchytskyy <igork@ami.com>
> Cc: Isaac Oram <isaac.w.oram@intel.com>
> Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
> Acked-by: Isaac Oram <isaac.w.oram@intel.com>
> ---
>  MdePkg/Include/IndustryStandard/Mctp.h | 138 +++++++++++++++++++++++++
>  1 file changed, 138 insertions(+)
>  create mode 100644 MdePkg/Include/IndustryStandard/Mctp.h
> 
> diff --git a/MdePkg/Include/IndustryStandard/Mctp.h b/MdePkg/Include/IndustryStandard/Mctp.h
> new file mode 100644
> index 00000000000..bfbc843c7f1
> --- /dev/null
> +++ b/MdePkg/Include/IndustryStandard/Mctp.h
> @@ -0,0 +1,138 @@
> +/** @file
> +
> +  The definitions of DMTF Management Component Transport Protocol (MCTP)
> +  Base Specification.
> +
> +  Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +  @par Revision Reference:
> +  DMTF Management Component Transport Protocol (MCTP) Base Specification
> +  Version 1.3.1
> +  https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.1.pdf
> +**/
> +
> +#ifndef MCTP_H_
> +#define MCTP_H_
> +
> +///
> +/// Definitions of endpoint ID
> +///
> +#define MCTP_NULL_DESTINATION_ENDPOINT_ID  0
> +#define MCTP_NULL_SOURCE_ENDPOINT_ID       0
> +#define MCTP_RESERVED_ENDPOINT_START_ID    1
> +#define MCTP_RESERVED_ENDPOINT_END_ID      7
> +#define MCTP_BROADCAST_ENDPOINT_ID         0xFF
> +
> +/// Minimum transmission size is 64 bytes.
> +/// The value of 64 is defined in MCTP Base Specification.
> +#define MCTP_BASELINE_MINIMUM_UNIT_TRANSMISSION_SIZE  0x40
> +
> +///
> +/// The 32-bit Header of MCTP packet.
> +///
> +typedef union {
> +  struct {
> +    UINT8    HeaderVersion         : 4; ///< The version of header.
> +    UINT8    Reserved              : 4; ///< Reserved for future definitions.
> +    UINT8    DestinationEndpointId : 8; ///< Destination endpoint Id (EID).
> +    UINT8    SourceEndpointIdId    : 8; ///< Source endpoint Id (EID)
> +    UINT8    MessageTag            : 3; ///< Check the MCTP Base specification for the
> +                                        ///< usages.
> +    UINT8    TagOwner              : 1; ///< Tag owner identifies the message was
> +                                        ///< originated by the source EID or
> +                                        ///< destination EID.
> +    UINT8    PacketSequence        : 2; ///< Sequence number increments Modulo 4 on
> +                                        ///< each packet.
> +    UINT8    EndOfMessage          : 1; ///< Indicates the last packet of message.
> +    UINT8    StartOfMessage        : 1; ///< Indicates the first packet of message.

These bitfields should be type UINT32

> +  } Bits;
> +  UINT32    Header;
> +} MCTP_TRANSPORT_HEADER;
> +
> +///
> +/// The 8-bit Message Header of MCTP packet.
> +///
> +typedef union {
> +  struct {
> +    UINT8    MessageType   : 7;
> +    UINT8    ItegrityCheck : 1;
> +  } Bits;
> +  UINT8    MessageHeader;
> +} MCTP_MESSAGE_HEADER;
> +
> +///
> +/// MCTP Control Commands
> +///
> +#define   MCTP_CONTROL_RESERVED                            0x00
> +#define   MCTP_CONTROL_SET_ENDPOINT_ID                     0x01
> +#define   MCTP_CONTROL_GET_ENDPOINT_ID                     0x02
> +#define   MCTP_CONTROL_GET_ENDPOINT_UUID                   0x03
> +#define   MCTP_CONTROL_GET_MCTP_VERSION_SUPPORT            0x04
> +#define   MCTP_CONTROL_GET_MESSAGE_TYPE_SUPPORT            0x05
> +#define   MCTP_CONTROL_GET_VENDOR_DEFINED_MESSAGE_SUPPORT  0x06
> +#define   MCTP_CONTROL_RESOLVE_ENDPOINT_ID                 0x07
> +#define   MCTP_CONTROL_ALLOCATE_ENDPOINT_IDS               0x08
> +#define   MCTP_CONTROL_ROUTING_INFORMATION_UPDATE          0x09
> +#define   MCTP_CONTROL_GET_ROUTINE_TABLE_ENTRIES           0x0A
> +#define   MCTP_CONTROL_PREPARE_FOR_ENDPOINT_DISCOVERY      0x0B
> +#define   MCTP_CONTROL_ENDPOINT_DISCOVERY                  0x0C
> +#define   MCTP_CONTROL_DISCOVERY_NOTIFY                    0x0D
> +#define   MCTP_CONTROL_GET_NETWORK_ID                      0x0E
> +#define   MCTP_CONTROL_QUERY_HOP                           0x0F
> +#define   MCTP_CONTROL_RESOLVE_UUID                        0x10
> +#define   MCTP_CONTROL_QUERY_RATE_LIMIT                    0x11
> +#define   MCTP_CONTROL_REQUEST_TX_RATE_LIMIT               0x12
> +#define   MCTP_CONTROL_UPDATE_RATE_LIMIT                   0x13
> +#define   MCTP_CONTROL_QUERY_SUPPORTED_INTERFACES          0x14
> +#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_START            0xF0
> +#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_END              0xFF
> +
> +///
> +/// MCTP Control Message Completion Codes
> +///
> +#define   MCTP_CONTROL_COMPLETION_CODES_SUCCESS                 0x00
> +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR                   0x01
> +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_DATA      0x02
> +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_LENGTH    0x03
> +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_NOT_READY         0x04
> +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_UNSUPPORTED_CMD   0x05
> +#define   MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_START  0x80
> +#define   MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_END    0xFF
> +
> +///
> +/// MCTP Control Message Types
> +///
> +#define   MCTP_MESSAGE_TYPE_CONTROL              0x00
> +#define   MCTP_MESSAGE_TYPE_PLDM                 0x01
> +#define   MCTP_MESSAGE_TYPE_NCSI                 0x02
> +#define   MCTP_MESSAGE_TYPE_ETHERNET             0x03
> +#define   MCTP_MESSAGE_TYPE_NVME                 0x04
> +#define   MCTP_MESSAGE_TYPE_SPDM                 0x05
> +#define   MCTP_MESSAGE_TYPE_SECURE_MESSAGE       0x06
> +#define   MCTP_MESSAGE_TYPE_CXL_FM_API           0x07
> +#define   MCTP_MESSAGE_TYPE_CXL_CCI              0x08
> +#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_PCI   0x7E
> +#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_IANA  0x7F
> +
> +#define   MCTP_ENDPOINT_ID_NULL            0
> +#define   MCTP_ENDPOINT_ID_RESERVED_START  1
> +#define   MCTP_ENDPOINT_ID_RESERVED_END    7
> +#define   MCTP_ENDPOINT_ID_BROADCAST       0xff
> +///
> +/// MCTP Control Message Format
> +///
> +typedef struct {
> +  struct {
> +    UINT8    IntegrityCheck : 1; ///< Message integrity check.
> +    UINT8    MessageType    : 7; ///< Message type.
> +    UINT8    RequestBit     : 1; ///< Request bit.
> +    UINT8    DatagramBit    : 1; ///< Datagram bit.
> +    UINT8    Reserved       : 1; ///< Reserved bit.
> +    UINT8    InstanceId     : 5; ///< Instance ID.
> +    UINT8    CommandCode    : 8; ///< Command code of request message.
> +    UINT8    CompletionCode : 8; ///< Completion code in response message.

These bitfields should be type UINT32.

> +  } Bits;
> +  UINT32    BodyHeader;
> +} MCTP_CONTROL_MESSAGE;
> +#endif
> --
> 2.37.1.windows.1



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Re: [edk2-devel] [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
Posted by Chang, Abner via groups.io 1 year, 2 months ago
[AMD Official Use Only - General]

Hi Mike,
MCTP v4 was just sent.
Thanks
Abner

> -----Original Message-----
> From: Kinney, Michael D <michael.d.kinney@intel.com>
> Sent: Friday, March 24, 2023 6:24 AM
> To: Chang, Abner <Abner.Chang@amd.com>; devel@edk2.groups.io
> Cc: Gao, Liming <gaoliming@byosoft.com.cn>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Nickle Wang <nicklew@nvidia.com>; Igor
> Kulchytskyy <igork@ami.com>; Oram, Isaac W <isaac.w.oram@intel.com>;
> Attar, AbdulLateef (Abdul Lateef) <AbdulLateef.Attar@amd.com>; Kinney,
> Michael D <michael.d.kinney@intel.com>
> Subject: RE: [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
> 
> Caution: This message originated from an External Source. Use proper
> caution when opening attachments, clicking links, or responding.
> 
> 
> > -----Original Message-----
> > From: abner.chang@amd.com <abner.chang@amd.com>
> > Sent: Thursday, March 23, 2023 8:05 AM
> > To: devel@edk2.groups.io
> > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming
> > <gaoliming@byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu@intel.com>;
> > Nickle Wang <nicklew@nvidia.com>; Igor Kulchytskyy <igork@ami.com>;
> > Oram, Isaac W <isaac.w.oram@intel.com>; Abdul Lateef Attar
> > <AbdulLateef.Attar@amd.com>
> > Subject: [PATCH v3] MdePkg/Include: Add DMTF MCTP definitions
> >
> > From: Abner Chang <abner.chang@amd.com>
> >
> > BZ #4355
> > This change adds definitions for DMTF MCTP base specification.
> >
> > Spec ref:
> >
> https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1
> > .3.1.pdf
> >
> > Signed-off-by: Abner Chang <abner.chang@amd.com>
> > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> > Cc: Nickle Wang <nicklew@nvidia.com>
> > Cc: Igor Kulchytskyy <igork@ami.com>
> > Cc: Isaac Oram <isaac.w.oram@intel.com>
> > Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
> > Acked-by: Isaac Oram <isaac.w.oram@intel.com>
> > ---
> >  MdePkg/Include/IndustryStandard/Mctp.h | 138
> > +++++++++++++++++++++++++
> >  1 file changed, 138 insertions(+)
> >  create mode 100644 MdePkg/Include/IndustryStandard/Mctp.h
> >
> > diff --git a/MdePkg/Include/IndustryStandard/Mctp.h
> > b/MdePkg/Include/IndustryStandard/Mctp.h
> > new file mode 100644
> > index 00000000000..bfbc843c7f1
> > --- /dev/null
> > +++ b/MdePkg/Include/IndustryStandard/Mctp.h
> > @@ -0,0 +1,138 @@
> > +/** @file
> > +
> > +  The definitions of DMTF Management Component Transport Protocol
> > + (MCTP)  Base Specification.
> > +
> > +  Copyright (C) 2023 Advanced Micro Devices, Inc. All rights
> > + reserved.<BR>
> > +  SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +  @par Revision Reference:
> > +  DMTF Management Component Transport Protocol (MCTP) Base
> > +Specification
> > +  Version 1.3.1
> > +
> >
> +https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_
> > +1.3.1.pdf
> > +**/
> > +
> > +#ifndef MCTP_H_
> > +#define MCTP_H_
> > +
> > +///
> > +/// Definitions of endpoint ID
> > +///
> > +#define MCTP_NULL_DESTINATION_ENDPOINT_ID  0
> > +#define MCTP_NULL_SOURCE_ENDPOINT_ID       0
> > +#define MCTP_RESERVED_ENDPOINT_START_ID    1
> > +#define MCTP_RESERVED_ENDPOINT_END_ID      7
> > +#define MCTP_BROADCAST_ENDPOINT_ID         0xFF
> > +
> > +/// Minimum transmission size is 64 bytes.
> > +/// The value of 64 is defined in MCTP Base Specification.
> > +#define MCTP_BASELINE_MINIMUM_UNIT_TRANSMISSION_SIZE  0x40
> > +
> > +///
> > +/// The 32-bit Header of MCTP packet.
> > +///
> > +typedef union {
> > +  struct {
> > +    UINT8    HeaderVersion         : 4; ///< The version of header.
> > +    UINT8    Reserved              : 4; ///< Reserved for future definitions.
> > +    UINT8    DestinationEndpointId : 8; ///< Destination endpoint Id (EID).
> > +    UINT8    SourceEndpointIdId    : 8; ///< Source endpoint Id (EID)
> > +    UINT8    MessageTag            : 3; ///< Check the MCTP Base specification
> for the
> > +                                        ///< usages.
> > +    UINT8    TagOwner              : 1; ///< Tag owner identifies the message was
> > +                                        ///< originated by the source EID or
> > +                                        ///< destination EID.
> > +    UINT8    PacketSequence        : 2; ///< Sequence number increments
> Modulo 4 on
> > +                                        ///< each packet.
> > +    UINT8    EndOfMessage          : 1; ///< Indicates the last packet of
> message.
> > +    UINT8    StartOfMessage        : 1; ///< Indicates the first packet of
> message.
> 
> These bitfields should be type UINT32
> 
> > +  } Bits;
> > +  UINT32    Header;
> > +} MCTP_TRANSPORT_HEADER;
> > +
> > +///
> > +/// The 8-bit Message Header of MCTP packet.
> > +///
> > +typedef union {
> > +  struct {
> > +    UINT8    MessageType   : 7;
> > +    UINT8    ItegrityCheck : 1;
> > +  } Bits;
> > +  UINT8    MessageHeader;
> > +} MCTP_MESSAGE_HEADER;
> > +
> > +///
> > +/// MCTP Control Commands
> > +///
> > +#define   MCTP_CONTROL_RESERVED                            0x00
> > +#define   MCTP_CONTROL_SET_ENDPOINT_ID                     0x01
> > +#define   MCTP_CONTROL_GET_ENDPOINT_ID                     0x02
> > +#define   MCTP_CONTROL_GET_ENDPOINT_UUID                   0x03
> > +#define   MCTP_CONTROL_GET_MCTP_VERSION_SUPPORT            0x04
> > +#define   MCTP_CONTROL_GET_MESSAGE_TYPE_SUPPORT            0x05
> > +#define   MCTP_CONTROL_GET_VENDOR_DEFINED_MESSAGE_SUPPORT
> 0x06
> > +#define   MCTP_CONTROL_RESOLVE_ENDPOINT_ID                 0x07
> > +#define   MCTP_CONTROL_ALLOCATE_ENDPOINT_IDS               0x08
> > +#define   MCTP_CONTROL_ROUTING_INFORMATION_UPDATE          0x09
> > +#define   MCTP_CONTROL_GET_ROUTINE_TABLE_ENTRIES           0x0A
> > +#define   MCTP_CONTROL_PREPARE_FOR_ENDPOINT_DISCOVERY
> 0x0B
> > +#define   MCTP_CONTROL_ENDPOINT_DISCOVERY                  0x0C
> > +#define   MCTP_CONTROL_DISCOVERY_NOTIFY                    0x0D
> > +#define   MCTP_CONTROL_GET_NETWORK_ID                      0x0E
> > +#define   MCTP_CONTROL_QUERY_HOP                           0x0F
> > +#define   MCTP_CONTROL_RESOLVE_UUID                        0x10
> > +#define   MCTP_CONTROL_QUERY_RATE_LIMIT                    0x11
> > +#define   MCTP_CONTROL_REQUEST_TX_RATE_LIMIT               0x12
> > +#define   MCTP_CONTROL_UPDATE_RATE_LIMIT                   0x13
> > +#define   MCTP_CONTROL_QUERY_SUPPORTED_INTERFACES          0x14
> > +#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_START            0xF0
> > +#define   MCTP_CONTROL_TRANSPORT_SPECIFIC_END              0xFF
> > +
> > +///
> > +/// MCTP Control Message Completion Codes ///
> > +#define   MCTP_CONTROL_COMPLETION_CODES_SUCCESS                 0x00
> > +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR                   0x01
> > +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_DATA
> 0x02
> > +#define
> MCTP_CONTROL_COMPLETION_CODES_ERROR_INVALID_LENGTH    0x03
> > +#define   MCTP_CONTROL_COMPLETION_CODES_ERROR_NOT_READY
> 0x04
> > +#define
> MCTP_CONTROL_COMPLETION_CODES_ERROR_UNSUPPORTED_CMD   0x05
> > +#define
> MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_START  0x80
> > +#define
> MCTP_CONTROL_COMPLETION_CODES_COMMAND_SPECIFIC_END    0xFF
> > +
> > +///
> > +/// MCTP Control Message Types
> > +///
> > +#define   MCTP_MESSAGE_TYPE_CONTROL              0x00
> > +#define   MCTP_MESSAGE_TYPE_PLDM                 0x01
> > +#define   MCTP_MESSAGE_TYPE_NCSI                 0x02
> > +#define   MCTP_MESSAGE_TYPE_ETHERNET             0x03
> > +#define   MCTP_MESSAGE_TYPE_NVME                 0x04
> > +#define   MCTP_MESSAGE_TYPE_SPDM                 0x05
> > +#define   MCTP_MESSAGE_TYPE_SECURE_MESSAGE       0x06
> > +#define   MCTP_MESSAGE_TYPE_CXL_FM_API           0x07
> > +#define   MCTP_MESSAGE_TYPE_CXL_CCI              0x08
> > +#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_PCI   0x7E
> > +#define   MCTP_MESSAGE_TYPE_VENDOR_DEFINED_IANA  0x7F
> > +
> > +#define   MCTP_ENDPOINT_ID_NULL            0
> > +#define   MCTP_ENDPOINT_ID_RESERVED_START  1
> > +#define   MCTP_ENDPOINT_ID_RESERVED_END    7
> > +#define   MCTP_ENDPOINT_ID_BROADCAST       0xff
> > +///
> > +/// MCTP Control Message Format
> > +///
> > +typedef struct {
> > +  struct {
> > +    UINT8    IntegrityCheck : 1; ///< Message integrity check.
> > +    UINT8    MessageType    : 7; ///< Message type.
> > +    UINT8    RequestBit     : 1; ///< Request bit.
> > +    UINT8    DatagramBit    : 1; ///< Datagram bit.
> > +    UINT8    Reserved       : 1; ///< Reserved bit.
> > +    UINT8    InstanceId     : 5; ///< Instance ID.
> > +    UINT8    CommandCode    : 8; ///< Command code of request message.
> > +    UINT8    CompletionCode : 8; ///< Completion code in response
> message.
> 
> These bitfields should be type UINT32.
> 
> > +  } Bits;
> > +  UINT32    BodyHeader;
> > +} MCTP_CONTROL_MESSAGE;
> > +#endif
> > --
> > 2.37.1.windows.1


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