Add RPMI MPXY integration chapter

Signed-off-by: Rahul Pathak <[email protected]>

riscv-rpmi.adoc

@@ -64,6 +64,8 @@ include::src/transport.adoc[]
 
 include::src/message-protocol.adoc[]
 
+include::src/rpmi-mpxy.adoc[]
+
 include::src/service-groups.adoc[]
 
 include::src/srvgrp-base.adoc[]

src/rpmi-mpxy.adoc

@@ -0,0 +1,41 @@
+:path: src/
+:imagesdir: ../images
+
+ifdef::rootpath[]
+:imagesdir: {rootpath}{path}{imagesdir}
+endif::rootpath[]
+
+ifndef::rootpath[]
+:rootpath: ./../
+endif::rootpath[]
+
+== RPMI Integration with SBI MPXY Extension
+The SBI MPXY (Message Proxy) extension is defined by the RISC-V SBI Specification
+cite:[SBI] for sending and receiving the message data from the S-mode.
+
+.RPMI and MPXY Integration
+image::mpxy-rpmi.png[350,350, align="center"]
+
+RPMI service groups that are M-mode only, including BASE, which is an exception
+must not be accessible via SBI MPXY interface. A MPXY channel
+corresponds to a single RPMI service group bound to that MPXY channel.
+
+The following table lists the RPMI message protocol specific attributes for
+a MPXY channel.
+
+[#table_rpmi_mpxy_attributes]
+.RPMI Attributes for MPXY Channel
+[cols="2, 2, 1, 3", width=100%, align="center", options="header"]
+|===
+| Attribute Name
+| Attribute ID
+| Access
+| Description
+
+| SERVICEGROUP_ID
+| 0x80000000
+| RO
+| RPMI service group ID
+|===
+
+TODO: Link to the MPXY Extension chapter in SBI spec (does not exist in SBI spec)

src/service-groups.adoc

@@ -38,63 +38,77 @@ The following table lists the service groups.
 
 [#table_service_groups]
 .RPMI Service Groups
-[cols="2, 2, 4", width=100%, align="center", options="header"]
+[cols="2, 2, 4, 3", width=100%, align="center", options="header"]
 |===
 | Service Group ID
 | Version (Major:Minor)
 | Service Group Name
+| RISC-V Privilege Mode
 
 | 0x0001
 |
 | BASE
+| M-mode, S-mode
 
 | 0x0002
 |
 | SYSTEM_RESET
+| M-mode
 
 | 0x0003
 |
 | SYSTEM_SUSPEND
+| M-mode
 
 | 0x0004
 |
 | HART_STATE_MANAGEMENT
+| M-mode
 
 | 0x0005
 |
 | CPPC
+| M-mode, S-mode
 
 | 0x0006
 |
 | VOLTAGE
+| M-mode, S-mode
 
 | 0x0007
 |
 | CLOCK
+| M-mode, S-mode
 
 | 0x0008
 |
 | DEVICE_POWER
+| M-mode, S-mode
 
 | 0x0009
 |
 | PERFORMANCE
+| M-mode, S-mode
 
 | 0x000A
 |
 | MANAGEMENT_MODE
+| M-mode, S-mode
 
 | 0x000B
 |
 | RAS_AGENT
+| M-mode, S-mode
 
 | 0x000C - 0x7FFF
 |
 | _Reserved for Future Use_
+|
 
 | 0x8000 - 0xFFFF
 |
 | _Implementation Specific Service Groups_
+|
 |===
 
 NOTE: The services listed within each service group do not have a specific order.