1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2023 Intel Corporation
4 */
5
6#ifndef _ABI_GSC_COMMAND_HEADER_ABI_H
7#define _ABI_GSC_COMMAND_HEADER_ABI_H
8
9#include <linux/types.h>
10
11struct intel_gsc_mtl_header {
12 u32 validity_marker;
13#define GSC_HECI_VALIDITY_MARKER 0xA578875A
14
15 u8 heci_client_id;
16
17 u8 reserved1;
18
19 u16 header_version;
20#define MTL_GSC_HEADER_VERSION 1
21
22 /* FW allows host to decide host_session handle as it sees fit. */
23 u64 host_session_handle;
24
25 /* handle generated by FW for messages that need to be re-submitted */
26 u64 gsc_message_handle;
27
28 u32 message_size; /* lower 20 bits only, upper 12 are reserved */
29
30 /*
31 * Flags mask:
32 * Bit 0: Pending
33 * Bit 1: Session Cleanup;
34 * Bits 2-15: Flags
35 * Bits 16-31: Extension Size
36 * According to internal spec flags are either input or output
37 * we distinguish the flags using OUTFLAG or INFLAG
38 */
39 u32 flags;
40#define GSC_OUTFLAG_MSG_PENDING BIT(0)
41#define GSC_INFLAG_MSG_CLEANUP BIT(1)
42
43 u32 status;
44} __packed;
45
46#endif
47

source code of linux/drivers/gpu/drm/xe/abi/gsc_command_header_abi.h