ipc_cmd_hdr Struct Reference

Generic message header. More...

#include <src/include/ipc3/header.h>

Data Fields
uint32_t	dat [2]
uint32_t	pri
	Primary 32-bit register value.
uint32_t	ext
	Extension 32-bit register value.

Detailed Description

Generic message header.

Generic raw 64-bit IPC4 message header registers.

IPC MAJOR 3 version. All IPC3 messages use this header as abstraction to platform specific calls.

All IPC4 messages are passed across the mailbox as a pair of 32-bit registers (Primary DWORD + Extension DWORD).

Field Documentation

dat

uint32_t ipc_cmd_hdr::dat[2]

ext

uint32_t ipc_cmd_hdr::ext

Extension 32-bit register value.

pri

uint32_t ipc_cmd_hdr::pri

Primary 32-bit register value.

---

The documentation for this struct was generated from the following files:

• src/include/ipc3/header.h
• src/include/ipc4/header.h