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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2023 Intel Corporation
*/
#ifndef _INTEL_GSC_UC_HECI_CMD_SUBMIT_H_
#define _INTEL_GSC_UC_HECI_CMD_SUBMIT_H_
#include <linux/types.h>
struct intel_gsc_uc;
struct intel_gsc_mtl_header {
u32 validity_marker;
#define GSC_HECI_VALIDITY_MARKER 0xA578875A
u8 heci_client_id;
#define HECI_MEADDRESS_PXP 17
#define HECI_MEADDRESS_HDCP 18
u8 reserved1;
u16 header_version;
#define MTL_GSC_HEADER_VERSION 1
/*
* FW allows host to decide host_session handle
* as it sees fit.
* For intertracebility reserving select bits(60-63)
* to differentiate caller-target subsystem
* 0000 - HDCP
* 0001 - PXP Single Session
*/
u64 host_session_handle;
#define HOST_SESSION_MASK REG_GENMASK64(63, 60)
#define HOST_SESSION_PXP_SINGLE BIT_ULL(60)
u64 gsc_message_handle;
u32 message_size; /* lower 20 bits only, upper 12 are reserved */
/*
* Flags mask:
* Bit 0: Pending
* Bit 1: Session Cleanup;
* Bits 2-15: Flags
* Bits 16-31: Extension Size
* According to internal spec flags are either input or output
* we distinguish the flags using OUTFLAG or INFLAG
*/
u32 flags;
#define GSC_OUTFLAG_MSG_PENDING 1
u32 status;
} __packed;
int intel_gsc_uc_heci_cmd_submit_packet(struct intel_gsc_uc *gsc,
u64 addr_in, u32 size_in,
u64 addr_out, u32 size_out);
void intel_gsc_uc_heci_cmd_emit_mtl_header(struct intel_gsc_mtl_header *header,
u8 heci_client_id, u32 message_size,
u64 host_session_id);
#endif
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