/* 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 i915_vma;
struct intel_context;
struct intel_gsc_uc;
#define GSC_HECI_REPLY_LATENCY_MS 500
/*
* Max FW response time is 500 ms , but this should be counted from the time the
* command has hit the GSC - CS hardware , not the preceding handoff to GuC CTB .
*/
struct intel_gsc_mtl_header {
u32 validity_marker;
#define GSC_HECI_VALIDITY_MARKER 0 xA578875A
u8 heci_client_id;
#define HECI_MEADDRESS_MKHI 7
#define HECI_MEADDRESS_PROXY 10
#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 BIT(0 )
#define GSC_INFLAG_MSG_CLEANUP BIT(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);
struct intel_gsc_heci_non_priv_pkt {
u64 addr_in;
u32 size_in;
u64 addr_out;
u32 size_out;
struct i915_vma *heci_pkt_vma;
struct i915_vma *bb_vma;
};
void
intel_gsc_uc_heci_cmd_emit_mtl_header(struct intel_gsc_mtl_header *header,
u8 heci_client_id, u32 msg_size,
u64 host_session_id);
int
intel_gsc_uc_heci_cmd_submit_nonpriv(struct intel_gsc_uc *gsc,
struct intel_context *ce,
struct intel_gsc_heci_non_priv_pkt *pkt,
u32 *cs, int timeout_ms);
#endif
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