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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2023 Intel Corporation
*/
#ifndef _ABI_GSC_PXP_COMMANDS_ABI_H
#define _ABI_GSC_PXP_COMMANDS_ABI_H
#include <linux/sizes.h>
#include <linux/types.h>
/* Heci client ID for PXP commands */
#define HECI_MEADDRESS_PXP 17
#define PXP_APIVER(x, y) (((x) & 0xFFFF) << 16 | ((y) & 0xFFFF))
/*
* A PXP sub-section in an HECI packet can be up to 64K big in each direction.
* This does not include the top-level GSC header.
*/
#define PXP_MAX_PACKET_SIZE SZ_64K
/*
* there are a lot of status codes for PXP, but we only define the cross-API
* common ones that we actually can handle in the kernel driver. Other failure
* codes should be printed to error msg for debug.
*/
enum pxp_status {
PXP_STATUS_SUCCESS = 0x0,
PXP_STATUS_ERROR_API_VERSION = 0x1002,
PXP_STATUS_NOT_READY = 0x100e,
PXP_STATUS_PLATFCONFIG_KF1_NOVERIF = 0x101a,
PXP_STATUS_PLATFCONFIG_KF1_BAD = 0x101f,
PXP_STATUS_PLATFCONFIG_FIXED_KF1_NOT_SUPPORTED = 0x1037,
PXP_STATUS_OP_NOT_PERMITTED = 0x4013
};
/* Common PXP FW message header */
struct pxp_cmd_header {
u32 api_version;
u32 command_id;
union {
u32 status; /* out */
u32 stream_id; /* in */
#define PXP_CMDHDR_EXTDATA_SESSION_VALID GENMASK(0, 0)
#define PXP_CMDHDR_EXTDATA_APP_TYPE GENMASK(1, 1)
#define PXP_CMDHDR_EXTDATA_SESSION_ID GENMASK(17, 2)
};
/* Length of the message (excluding the header) */
u32 buffer_len;
} __packed;
#define PXP43_CMDID_INVALIDATE_STREAM_KEY 0x00000007
#define PXP43_CMDID_INIT_SESSION 0x00000036
#define PXP43_CMDID_NEW_HUC_AUTH 0x0000003F /* MTL+ */
/* PXP-Input-Packet: HUC Auth-only */
struct pxp43_new_huc_auth_in {
struct pxp_cmd_header header;
u64 huc_base_address;
u32 huc_size;
} __packed;
/* PXP-Output-Packet: HUC Load and Authentication or Auth-only */
struct pxp43_huc_auth_out {
struct pxp_cmd_header header;
} __packed;
/* PXP-Input-Packet: Init PXP session */
struct pxp43_create_arb_in {
struct pxp_cmd_header header;
/* header.stream_id fields for vesion 4.3 of Init PXP session: */
#define PXP43_INIT_SESSION_VALID BIT(0)
#define PXP43_INIT_SESSION_APPTYPE BIT(1)
#define PXP43_INIT_SESSION_APPID GENMASK(17, 2)
u32 protection_mode;
#define PXP43_INIT_SESSION_PROTECTION_ARB 0x2
u32 sub_session_id;
u32 init_flags;
u32 rsvd[12];
} __packed;
/* PXP-Input-Packet: Init PXP session */
struct pxp43_create_arb_out {
struct pxp_cmd_header header;
u32 rsvd[8];
} __packed;
/* PXP-Input-Packet: Invalidate Stream Key */
struct pxp43_inv_stream_key_in {
struct pxp_cmd_header header;
u32 rsvd[3];
} __packed;
/* PXP-Output-Packet: Invalidate Stream Key */
struct pxp43_inv_stream_key_out {
struct pxp_cmd_header header;
u32 rsvd;
} __packed;
#endif
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