1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright(c) 2022, Intel Corporation. All rights reserved.
4 */
5
6#ifndef __INTEL_PXP_FW_INTERFACE_43_H__
7#define __INTEL_PXP_FW_INTERFACE_43_H__
8
9#include <linux/types.h>
10#include "intel_pxp_cmd_interface_cmn.h"
11
12/* PXP-Cmd-Op definitions */
13#define PXP43_CMDID_START_HUC_AUTH 0x0000003A
14#define PXP43_CMDID_NEW_HUC_AUTH 0x0000003F /* MTL+ */
15#define PXP43_CMDID_INIT_SESSION 0x00000036
16
17/* PXP-Packet sizes for MTL's GSCCS-HECI instruction is spec'd at 65K before page alignment*/
18#define PXP43_MAX_HECI_INOUT_SIZE (PAGE_ALIGN(SZ_64K + SZ_1K))
19
20/* PXP-Packet size for MTL's NEW_HUC_AUTH instruction */
21#define PXP43_HUC_AUTH_INOUT_SIZE (SZ_4K)
22
23/* PXP-Input-Packet: HUC Load and Authentication */
24struct pxp43_start_huc_auth_in {
25 struct pxp_cmd_header header;
26 __le64 huc_base_address;
27} __packed;
28
29/* PXP-Input-Packet: HUC Auth-only */
30struct pxp43_new_huc_auth_in {
31 struct pxp_cmd_header header;
32 u64 huc_base_address;
33 u32 huc_size;
34} __packed;
35
36/* PXP-Output-Packet: HUC Load and Authentication or Auth-only */
37struct pxp43_huc_auth_out {
38 struct pxp_cmd_header header;
39} __packed;
40
41/* PXP-Input-Packet: Init PXP session */
42struct pxp43_create_arb_in {
43 struct pxp_cmd_header header;
44 /* header.stream_id fields for version 4.3 of Init PXP session: */
45 #define PXP43_INIT_SESSION_VALID BIT(0)
46 #define PXP43_INIT_SESSION_APPTYPE BIT(1)
47 #define PXP43_INIT_SESSION_APPID GENMASK(17, 2)
48 u32 protection_mode;
49 #define PXP43_INIT_SESSION_PROTECTION_ARB 0x2
50 u32 sub_session_id;
51 u32 init_flags;
52 u32 rsvd[12];
53} __packed;
54
55/* PXP-Input-Packet: Init PXP session */
56struct pxp43_create_arb_out {
57 struct pxp_cmd_header header;
58 u32 rsvd[8];
59} __packed;
60
61#endif /* __INTEL_PXP_FW_INTERFACE_43_H__ */
62

source code of linux/drivers/gpu/drm/i915/pxp/intel_pxp_cmd_interface_43.h