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Diffstat (limited to 'wiki/RPC-Message-Format.md')
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diff --git a/wiki/RPC-Message-Format.md b/wiki/RPC-Message-Format.md index e627871..baec760 100644 --- a/wiki/RPC-Message-Format.md +++ b/wiki/RPC-Message-Format.md @@ -1,5 +1,16 @@ # GSP RPC Message Format Specification +> **Historical document — superseded.** This page describes the legacy BAR0 +> mailbox RPC model: the 64-byte `GSPR` magic header and the 12-type model +> below are **not** the path the guest driver uses. The live GSP-RM path is a +> message queue in guest system memory with 4 KB queue elements and a 32-byte +> RPC header (signature `0x43505256`, header version `0x03000000`); functions +> are a flat enum (`SET_GUEST_SYSTEM_INFO` 1, `FREE` 10, +> `GET_GSP_STATIC_INFO` 65, `GSP_RM_CONTROL` 76, `GSP_RM_ALLOC` 103, ...). +> Canonical documentation: +> [`../docs/03-architecture/03-gsp-and-gsp-rm.md`](../docs/03-architecture/03-gsp-and-gsp-rm.md) +> and [`../docs/03-architecture/06-host-module-and-hybrid-model.md`](../docs/03-architecture/06-host-module-and-hybrid-model.md). + ## Overview The GSP firmware uses a dispatcher-based RPC system with two dispatchers: - **Primary** (0x057A1AC0): ALLOC, FREE, MAP, UNMAP, PIN, UNPIN, SCHEDULE, YIELD, NOTIFY, BAR_TRAP, MIGRATE, DEBUG @@ -191,6 +202,9 @@ typedef struct { ## Wire Format (Host → GSP) +> **Legacy BAR0 mailbox format — not used by the guest driver.** The current +> msgq header/element facts are in the note at the top of this page. + ### Message Header (64 bytes) ```c typedef struct { |