3 * Intel Management Engine Interface (Intel MEI) Linux driver
4 * Copyright (c) 2003-2012, Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 #ifndef _MEI_HW_TYPES_H_
18 #define _MEI_HW_TYPES_H_
20 #include <linux/uuid.h>
25 #define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
26 #define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
28 #define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
29 #define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
31 #define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */
33 #define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */
34 #define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */
35 #define MEI_HBM_TIMEOUT 1 /* 1 second */
40 #define HBM_MINOR_VERSION 0
41 #define HBM_MAJOR_VERSION 2
44 * MEI version with PGI support
46 #define HBM_MINOR_VERSION_PGI 1
47 #define HBM_MAJOR_VERSION_PGI 1
50 * MEI version with Dynamic clients support
52 #define HBM_MINOR_VERSION_DC 0
53 #define HBM_MAJOR_VERSION_DC 2
56 * MEI version with disconnect on connection timeout support
58 #define HBM_MINOR_VERSION_DOT 0
59 #define HBM_MAJOR_VERSION_DOT 2
62 * MEI version with notifcation support
64 #define HBM_MINOR_VERSION_EV 0
65 #define HBM_MAJOR_VERSION_EV 2
68 * MEI version with fixed address client support
70 #define HBM_MINOR_VERSION_FA 0
71 #define HBM_MAJOR_VERSION_FA 2
73 /* Host bus message command opcode */
74 #define MEI_HBM_CMD_OP_MSK 0x7f
75 /* Host bus message command RESPONSE */
76 #define MEI_HBM_CMD_RES_MSK 0x80
79 * MEI Bus Message Command IDs
81 #define HOST_START_REQ_CMD 0x01
82 #define HOST_START_RES_CMD 0x81
84 #define HOST_STOP_REQ_CMD 0x02
85 #define HOST_STOP_RES_CMD 0x82
87 #define ME_STOP_REQ_CMD 0x03
89 #define HOST_ENUM_REQ_CMD 0x04
90 #define HOST_ENUM_RES_CMD 0x84
92 #define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05
93 #define HOST_CLIENT_PROPERTIES_RES_CMD 0x85
95 #define CLIENT_CONNECT_REQ_CMD 0x06
96 #define CLIENT_CONNECT_RES_CMD 0x86
98 #define CLIENT_DISCONNECT_REQ_CMD 0x07
99 #define CLIENT_DISCONNECT_RES_CMD 0x87
101 #define MEI_FLOW_CONTROL_CMD 0x08
103 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD 0x0a
104 #define MEI_PG_ISOLATION_ENTRY_RES_CMD 0x8a
105 #define MEI_PG_ISOLATION_EXIT_REQ_CMD 0x0b
106 #define MEI_PG_ISOLATION_EXIT_RES_CMD 0x8b
108 #define MEI_HBM_ADD_CLIENT_REQ_CMD 0x0f
109 #define MEI_HBM_ADD_CLIENT_RES_CMD 0x8f
111 #define MEI_HBM_NOTIFY_REQ_CMD 0x10
112 #define MEI_HBM_NOTIFY_RES_CMD 0x90
113 #define MEI_HBM_NOTIFICATION_CMD 0x11
117 * used by hbm_host_stop_request.reason
119 enum mei_stop_reason_types {
120 DRIVER_STOP_REQUEST = 0x00,
121 DEVICE_D1_ENTRY = 0x01,
122 DEVICE_D2_ENTRY = 0x02,
123 DEVICE_D3_ENTRY = 0x03,
124 SYSTEM_S1_ENTRY = 0x04,
125 SYSTEM_S2_ENTRY = 0x05,
126 SYSTEM_S3_ENTRY = 0x06,
127 SYSTEM_S4_ENTRY = 0x07,
128 SYSTEM_S5_ENTRY = 0x08
133 * enum mei_hbm_status - mei host bus messages return values
135 * @MEI_HBMS_SUCCESS : status success
136 * @MEI_HBMS_CLIENT_NOT_FOUND : client not found
137 * @MEI_HBMS_ALREADY_EXISTS : connection already established
138 * @MEI_HBMS_REJECTED : connection is rejected
139 * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
140 * @MEI_HBMS_NOT_ALLOWED : operation not allowed
141 * @MEI_HBMS_ALREADY_STARTED : system is already started
142 * @MEI_HBMS_NOT_STARTED : system not started
144 * @MEI_HBMS_MAX : sentinel
146 enum mei_hbm_status {
147 MEI_HBMS_SUCCESS = 0,
148 MEI_HBMS_CLIENT_NOT_FOUND = 1,
149 MEI_HBMS_ALREADY_EXISTS = 2,
150 MEI_HBMS_REJECTED = 3,
151 MEI_HBMS_INVALID_PARAMETER = 4,
152 MEI_HBMS_NOT_ALLOWED = 5,
153 MEI_HBMS_ALREADY_STARTED = 6,
154 MEI_HBMS_NOT_STARTED = 7,
161 * Client Connect Status
162 * used by hbm_client_connect_response.status
164 enum mei_cl_connect_status {
165 MEI_CL_CONN_SUCCESS = MEI_HBMS_SUCCESS,
166 MEI_CL_CONN_NOT_FOUND = MEI_HBMS_CLIENT_NOT_FOUND,
167 MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
168 MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
169 MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
170 MEI_CL_CONN_NOT_ALLOWED = MEI_HBMS_NOT_ALLOWED,
174 * Client Disconnect Status
176 enum mei_cl_disconnect_status {
177 MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
181 * MEI BUS Interface Section
193 struct mei_bus_message {
199 * struct hbm_cl_cmd - client specific host bus command
200 * CONNECT, DISCONNECT, and FlOW CONTROL
202 * @hbm_cmd: bus message command header
203 * @me_addr: address of the client in ME
204 * @host_addr: address of the client in the driver
205 * @data: generic data
207 struct mei_hbm_cl_cmd {
219 struct hbm_host_version_request {
222 struct hbm_version host_version;
225 struct hbm_host_version_response {
227 u8 host_version_supported;
228 struct hbm_version me_max_version;
231 struct hbm_host_stop_request {
237 struct hbm_host_stop_response {
242 struct hbm_me_stop_request {
249 * struct hbm_host_enum_request - enumeration request from host to fw
251 * @hbm_cmd: bus message command header
252 * @allow_add: allow dynamic clients add HBM version >= 2.0
253 * @reserved: reserved
255 struct hbm_host_enum_request {
261 struct hbm_host_enum_response {
264 u8 valid_addresses[32];
267 struct mei_client_properties {
268 uuid_le protocol_name;
270 u8 max_number_of_connections;
276 struct hbm_props_request {
282 struct hbm_props_response {
287 struct mei_client_properties client_properties;
291 * struct hbm_add_client_request - request to add a client
292 * might be sent by fw after enumeration has already completed
294 * @hbm_cmd: bus message command header
295 * @me_addr: address of the client in ME
296 * @reserved: reserved
297 * @client_properties: client properties
299 struct hbm_add_client_request {
303 struct mei_client_properties client_properties;
307 * struct hbm_add_client_response - response to add a client
308 * sent by the host to report client addition status to fw
310 * @hbm_cmd: bus message command header
311 * @me_addr: address of the client in ME
312 * @status: if HBMS_SUCCESS then the client can now accept connections.
313 * @reserved: reserved
315 struct hbm_add_client_response {
323 * struct hbm_power_gate - power gate request/response
325 * @hbm_cmd: bus message command header
326 * @reserved: reserved
328 struct hbm_power_gate {
334 * struct hbm_client_connect_request - connect/disconnect request
336 * @hbm_cmd: bus message command header
337 * @me_addr: address of the client in ME
338 * @host_addr: address of the client in the driver
339 * @reserved: reserved
341 struct hbm_client_connect_request {
349 * struct hbm_client_connect_response - connect/disconnect response
351 * @hbm_cmd: bus message command header
352 * @me_addr: address of the client in ME
353 * @host_addr: address of the client in the driver
354 * @status: status of the request
356 struct hbm_client_connect_response {
364 #define MEI_FC_MESSAGE_RESERVED_LENGTH 5
366 struct hbm_flow_control {
370 u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
373 #define MEI_HBM_NOTIFICATION_START 1
374 #define MEI_HBM_NOTIFICATION_STOP 0
376 * struct hbm_notification_request - start/stop notification request
378 * @hbm_cmd: bus message command header
379 * @me_addr: address of the client in ME
380 * @host_addr: address of the client in the driver
381 * @start: start = 1 or stop = 0 asynchronous notifications
383 struct hbm_notification_request {
391 * struct hbm_notification_response - start/stop notification response
393 * @hbm_cmd: bus message command header
394 * @me_addr: address of the client in ME
395 * @host_addr: - address of the client in the driver
396 * @status: (mei_hbm_status) response status for the request
397 * - MEI_HBMS_SUCCESS: successful stop/start
398 * - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
399 * - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
400 * started notification.
401 * - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
402 * asynchronous notifications are currently disabled.
404 * @start: start = 1 or stop = 0 asynchronous notifications
405 * @reserved: reserved
407 struct hbm_notification_response {
417 * struct hbm_notification - notification event
419 * @hbm_cmd: bus message command header
420 * @me_addr: address of the client in ME
421 * @host_addr: address of the client in the driver
422 * @reserved: reserved for alignment
424 struct hbm_notification {