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linux/drivers/misc/mei/hw.h
Alexander Usyskin 7ee7f45a76 mei: bus: enable OS version only for SPT and newer 
Sending OS version for support of TPM2_ChangeEPS() is required only
for SPT FW (HMB version 2.0) and newer.
On older platforms the command should be just ignored by the firmware
but some older platforms misbehave so it's safer to send the command
only if required.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=192051
Fixes: 7279b238ba (mei: send OS type to the FW)
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Tested-by: Jan Niehusmann <jan@gondor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-11 07:43:57 +01:00

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/*
*
* Intel Management Engine Interface (Intel MEI) Linux driver
* Copyright (c) 2003-2012, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef _MEI_HW_TYPES_H_
#define _MEI_HW_TYPES_H_
#include <linux/uuid.h>
/*
* Timeouts in Seconds
*/
#define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
#define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
#define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
#define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
#define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */
#define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */
#define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */
#define MEI_HBM_TIMEOUT 1 /* 1 second */
/*
* MEI Version
*/
#define HBM_MINOR_VERSION 0
#define HBM_MAJOR_VERSION 2
/*
* MEI version with PGI support
*/
#define HBM_MINOR_VERSION_PGI 1
#define HBM_MAJOR_VERSION_PGI 1
/*
* MEI version with Dynamic clients support
*/
#define HBM_MINOR_VERSION_DC 0
#define HBM_MAJOR_VERSION_DC 2
/*
* MEI version with immediate reply to enum request support
*/
#define HBM_MINOR_VERSION_IE 0
#define HBM_MAJOR_VERSION_IE 2
/*
* MEI version with disconnect on connection timeout support
*/
#define HBM_MINOR_VERSION_DOT 0
#define HBM_MAJOR_VERSION_DOT 2
/*
* MEI version with notifcation support
*/
#define HBM_MINOR_VERSION_EV 0
#define HBM_MAJOR_VERSION_EV 2
/*
* MEI version with fixed address client support
*/
#define HBM_MINOR_VERSION_FA 0
#define HBM_MAJOR_VERSION_FA 2
/*
* MEI version with OS ver message support
*/
#define HBM_MINOR_VERSION_OS 0
#define HBM_MAJOR_VERSION_OS 2
/* Host bus message command opcode */
#define MEI_HBM_CMD_OP_MSK 0x7f
/* Host bus message command RESPONSE */
#define MEI_HBM_CMD_RES_MSK 0x80
/*
* MEI Bus Message Command IDs
*/
#define HOST_START_REQ_CMD 0x01
#define HOST_START_RES_CMD 0x81
#define HOST_STOP_REQ_CMD 0x02
#define HOST_STOP_RES_CMD 0x82
#define ME_STOP_REQ_CMD 0x03
#define HOST_ENUM_REQ_CMD 0x04
#define HOST_ENUM_RES_CMD 0x84
#define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05
#define HOST_CLIENT_PROPERTIES_RES_CMD 0x85
#define CLIENT_CONNECT_REQ_CMD 0x06
#define CLIENT_CONNECT_RES_CMD 0x86
#define CLIENT_DISCONNECT_REQ_CMD 0x07
#define CLIENT_DISCONNECT_RES_CMD 0x87
#define MEI_FLOW_CONTROL_CMD 0x08
#define MEI_PG_ISOLATION_ENTRY_REQ_CMD 0x0a
#define MEI_PG_ISOLATION_ENTRY_RES_CMD 0x8a
#define MEI_PG_ISOLATION_EXIT_REQ_CMD 0x0b
#define MEI_PG_ISOLATION_EXIT_RES_CMD 0x8b
#define MEI_HBM_ADD_CLIENT_REQ_CMD 0x0f
#define MEI_HBM_ADD_CLIENT_RES_CMD 0x8f
#define MEI_HBM_NOTIFY_REQ_CMD 0x10
#define MEI_HBM_NOTIFY_RES_CMD 0x90
#define MEI_HBM_NOTIFICATION_CMD 0x11
/*
* MEI Stop Reason
* used by hbm_host_stop_request.reason
*/
enum mei_stop_reason_types {
DRIVER_STOP_REQUEST = 0x00,
DEVICE_D1_ENTRY = 0x01,
DEVICE_D2_ENTRY = 0x02,
DEVICE_D3_ENTRY = 0x03,
SYSTEM_S1_ENTRY = 0x04,
SYSTEM_S2_ENTRY = 0x05,
SYSTEM_S3_ENTRY = 0x06,
SYSTEM_S4_ENTRY = 0x07,
SYSTEM_S5_ENTRY = 0x08
};
/**
* enum mei_hbm_status - mei host bus messages return values
*
* @MEI_HBMS_SUCCESS : status success
* @MEI_HBMS_CLIENT_NOT_FOUND : client not found
* @MEI_HBMS_ALREADY_EXISTS : connection already established
* @MEI_HBMS_REJECTED : connection is rejected
* @MEI_HBMS_INVALID_PARAMETER : invalid parameter
* @MEI_HBMS_NOT_ALLOWED : operation not allowed
* @MEI_HBMS_ALREADY_STARTED : system is already started
* @MEI_HBMS_NOT_STARTED : system not started
*
* @MEI_HBMS_MAX : sentinel
*/
enum mei_hbm_status {
MEI_HBMS_SUCCESS = 0,
MEI_HBMS_CLIENT_NOT_FOUND = 1,
MEI_HBMS_ALREADY_EXISTS = 2,
MEI_HBMS_REJECTED = 3,
MEI_HBMS_INVALID_PARAMETER = 4,
MEI_HBMS_NOT_ALLOWED = 5,
MEI_HBMS_ALREADY_STARTED = 6,
MEI_HBMS_NOT_STARTED = 7,
MEI_HBMS_MAX
};
/*
* Client Connect Status
* used by hbm_client_connect_response.status
*/
enum mei_cl_connect_status {
MEI_CL_CONN_SUCCESS = MEI_HBMS_SUCCESS,
MEI_CL_CONN_NOT_FOUND = MEI_HBMS_CLIENT_NOT_FOUND,
MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
MEI_CL_CONN_NOT_ALLOWED = MEI_HBMS_NOT_ALLOWED,
};
/*
* Client Disconnect Status
*/
enum mei_cl_disconnect_status {
MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
};
/*
* MEI BUS Interface Section
*/
struct mei_msg_hdr {
u32 me_addr:8;
u32 host_addr:8;
u32 length:9;
u32 reserved:5;
u32 internal:1;
u32 msg_complete:1;
} __packed;
struct mei_bus_message {
u8 hbm_cmd;
u8 data[0];
} __packed;
/**
* struct hbm_cl_cmd - client specific host bus command
* CONNECT, DISCONNECT, and FlOW CONTROL
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: address of the client in the driver
* @data: generic data
*/
struct mei_hbm_cl_cmd {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 data;
};
struct hbm_version {
u8 minor_version;
u8 major_version;
} __packed;
struct hbm_host_version_request {
u8 hbm_cmd;
u8 reserved;
struct hbm_version host_version;
} __packed;
struct hbm_host_version_response {
u8 hbm_cmd;
u8 host_version_supported;
struct hbm_version me_max_version;
} __packed;
struct hbm_host_stop_request {
u8 hbm_cmd;
u8 reason;
u8 reserved[2];
} __packed;
struct hbm_host_stop_response {
u8 hbm_cmd;
u8 reserved[3];
} __packed;
struct hbm_me_stop_request {
u8 hbm_cmd;
u8 reason;
u8 reserved[2];
} __packed;
/**
* enum hbm_host_enum_flags - enumeration request flags (HBM version >= 2.0)
*
* @MEI_HBM_ENUM_F_ALLOW_ADD: allow dynamic clients add
* @MEI_HBM_ENUM_F_IMMEDIATE_ENUM: allow FW to send answer immediately
*/
enum hbm_host_enum_flags {
MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0),
MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1),
};
/**
* struct hbm_host_enum_request - enumeration request from host to fw
*
* @hbm_cmd : bus message command header
* @flags : request flags
* @reserved: reserved
*/
struct hbm_host_enum_request {
u8 hbm_cmd;
u8 flags;
u8 reserved[2];
} __packed;
struct hbm_host_enum_response {
u8 hbm_cmd;
u8 reserved[3];
u8 valid_addresses[32];
} __packed;
struct mei_client_properties {
uuid_le protocol_name;
u8 protocol_version;
u8 max_number_of_connections;
u8 fixed_address;
u8 single_recv_buf;
u32 max_msg_length;
} __packed;
struct hbm_props_request {
u8 hbm_cmd;
u8 me_addr;
u8 reserved[2];
} __packed;
struct hbm_props_response {
u8 hbm_cmd;
u8 me_addr;
u8 status;
u8 reserved[1];
struct mei_client_properties client_properties;
} __packed;
/**
* struct hbm_add_client_request - request to add a client
* might be sent by fw after enumeration has already completed
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @reserved: reserved
* @client_properties: client properties
*/
struct hbm_add_client_request {
u8 hbm_cmd;
u8 me_addr;
u8 reserved[2];
struct mei_client_properties client_properties;
} __packed;
/**
* struct hbm_add_client_response - response to add a client
* sent by the host to report client addition status to fw
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @status: if HBMS_SUCCESS then the client can now accept connections.
* @reserved: reserved
*/
struct hbm_add_client_response {
u8 hbm_cmd;
u8 me_addr;
u8 status;
u8 reserved[1];
} __packed;
/**
* struct hbm_power_gate - power gate request/response
*
* @hbm_cmd: bus message command header
* @reserved: reserved
*/
struct hbm_power_gate {
u8 hbm_cmd;
u8 reserved[3];
} __packed;
/**
* struct hbm_client_connect_request - connect/disconnect request
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: address of the client in the driver
* @reserved: reserved
*/
struct hbm_client_connect_request {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved;
} __packed;
/**
* struct hbm_client_connect_response - connect/disconnect response
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: address of the client in the driver
* @status: status of the request
*/
struct hbm_client_connect_response {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 status;
} __packed;
#define MEI_FC_MESSAGE_RESERVED_LENGTH 5
struct hbm_flow_control {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
} __packed;
#define MEI_HBM_NOTIFICATION_START 1
#define MEI_HBM_NOTIFICATION_STOP 0
/**
* struct hbm_notification_request - start/stop notification request
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: address of the client in the driver
* @start: start = 1 or stop = 0 asynchronous notifications
*/
struct hbm_notification_request {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 start;
} __packed;
/**
* struct hbm_notification_response - start/stop notification response
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: - address of the client in the driver
* @status: (mei_hbm_status) response status for the request
* - MEI_HBMS_SUCCESS: successful stop/start
* - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
* - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
* started notification.
* - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
* asynchronous notifications are currently disabled.
*
* @start: start = 1 or stop = 0 asynchronous notifications
* @reserved: reserved
*/
struct hbm_notification_response {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 status;
u8 start;
u8 reserved[3];
} __packed;
/**
* struct hbm_notification - notification event
*
* @hbm_cmd: bus message command header
* @me_addr: address of the client in ME
* @host_addr: address of the client in the driver
* @reserved: reserved for alignment
*/
struct hbm_notification {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved[1];
} __packed;
#endif
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