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[~andy/linux] / drivers / misc / mei / hw.h
1 /*
2  *
3  * Intel Management Engine Interface (Intel MEI) Linux driver
4  * Copyright (c) 2003-2012, Intel Corporation.
5  *
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.
9  *
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
13  * more details.
14  *
15  */
16
17 #ifndef _MEI_HW_TYPES_H_
18 #define _MEI_HW_TYPES_H_
19
20 #include <linux/uuid.h>
21
22 /*
23  * Timeouts in Seconds
24  */
25 #define MEI_INTEROP_TIMEOUT         7  /* Timeout on ready message */
26 #define MEI_CONNECT_TIMEOUT         3  /* HPS: at least 2 seconds */
27
28 #define MEI_CL_CONNECT_TIMEOUT     15  /* HPS: Client Connect Timeout */
29 #define MEI_CLIENTS_INIT_TIMEOUT   15  /* HPS: Clients Enumeration Timeout */
30
31 #define MEI_IAMTHIF_STALL_TIMER    12  /* HPS */
32 #define MEI_IAMTHIF_READ_TIMER     10  /* HPS */
33
34
35 /*
36  * MEI Version
37  */
38 #define HBM_MINOR_VERSION                   0
39 #define HBM_MAJOR_VERSION                   1
40 #define HBM_TIMEOUT                         1   /* 1 second */
41
42 /* Host bus message command opcode */
43 #define MEI_HBM_CMD_OP_MSK                  0x7f
44 /* Host bus message command RESPONSE */
45 #define MEI_HBM_CMD_RES_MSK                 0x80
46
47 /*
48  * MEI Bus Message Command IDs
49  */
50 #define HOST_START_REQ_CMD                  0x01
51 #define HOST_START_RES_CMD                  0x81
52
53 #define HOST_STOP_REQ_CMD                   0x02
54 #define HOST_STOP_RES_CMD                   0x82
55
56 #define ME_STOP_REQ_CMD                     0x03
57
58 #define HOST_ENUM_REQ_CMD                   0x04
59 #define HOST_ENUM_RES_CMD                   0x84
60
61 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
62 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
63
64 #define CLIENT_CONNECT_REQ_CMD              0x06
65 #define CLIENT_CONNECT_RES_CMD              0x86
66
67 #define CLIENT_DISCONNECT_REQ_CMD           0x07
68 #define CLIENT_DISCONNECT_RES_CMD           0x87
69
70 #define MEI_FLOW_CONTROL_CMD                0x08
71
72 /*
73  * MEI Stop Reason
74  * used by hbm_host_stop_request.reason
75  */
76 enum mei_stop_reason_types {
77         DRIVER_STOP_REQUEST = 0x00,
78         DEVICE_D1_ENTRY = 0x01,
79         DEVICE_D2_ENTRY = 0x02,
80         DEVICE_D3_ENTRY = 0x03,
81         SYSTEM_S1_ENTRY = 0x04,
82         SYSTEM_S2_ENTRY = 0x05,
83         SYSTEM_S3_ENTRY = 0x06,
84         SYSTEM_S4_ENTRY = 0x07,
85         SYSTEM_S5_ENTRY = 0x08
86 };
87
88 /*
89  * Client Connect Status
90  * used by hbm_client_connect_response.status
91  */
92 enum client_connect_status_types {
93         CCS_SUCCESS = 0x00,
94         CCS_NOT_FOUND = 0x01,
95         CCS_ALREADY_STARTED = 0x02,
96         CCS_OUT_OF_RESOURCES = 0x03,
97         CCS_MESSAGE_SMALL = 0x04
98 };
99
100 /*
101  * Client Disconnect Status
102  */
103 enum client_disconnect_status_types {
104         CDS_SUCCESS = 0x00
105 };
106
107 /*
108  *  MEI BUS Interface Section
109  */
110 struct mei_msg_hdr {
111         u32 me_addr:8;
112         u32 host_addr:8;
113         u32 length:9;
114         u32 reserved:5;
115         u32 internal:1;
116         u32 msg_complete:1;
117 } __packed;
118
119
120 struct mei_bus_message {
121         u8 hbm_cmd;
122         u8 data[0];
123 } __packed;
124
125 /**
126  * struct hbm_cl_cmd - client specific host bus command
127  *      CONNECT, DISCONNECT, and FlOW CONTROL
128  *
129  * @hbm_cmd - bus message command header
130  * @me_addr - address of the client in ME
131  * @host_addr - address of the client in the driver
132  * @data
133  */
134 struct mei_hbm_cl_cmd {
135         u8 hbm_cmd;
136         u8 me_addr;
137         u8 host_addr;
138         u8 data;
139 };
140
141 struct hbm_version {
142         u8 minor_version;
143         u8 major_version;
144 } __packed;
145
146 struct hbm_host_version_request {
147         u8 hbm_cmd;
148         u8 reserved;
149         struct hbm_version host_version;
150 } __packed;
151
152 struct hbm_host_version_response {
153         u8 hbm_cmd;
154         u8 host_version_supported;
155         struct hbm_version me_max_version;
156 } __packed;
157
158 struct hbm_host_stop_request {
159         u8 hbm_cmd;
160         u8 reason;
161         u8 reserved[2];
162 } __packed;
163
164 struct hbm_host_stop_response {
165         u8 hbm_cmd;
166         u8 reserved[3];
167 } __packed;
168
169 struct hbm_me_stop_request {
170         u8 hbm_cmd;
171         u8 reason;
172         u8 reserved[2];
173 } __packed;
174
175 struct hbm_host_enum_request {
176         u8 hbm_cmd;
177         u8 reserved[3];
178 } __packed;
179
180 struct hbm_host_enum_response {
181         u8 hbm_cmd;
182         u8 reserved[3];
183         u8 valid_addresses[32];
184 } __packed;
185
186 struct mei_client_properties {
187         uuid_le protocol_name;
188         u8 protocol_version;
189         u8 max_number_of_connections;
190         u8 fixed_address;
191         u8 single_recv_buf;
192         u32 max_msg_length;
193 } __packed;
194
195 struct hbm_props_request {
196         u8 hbm_cmd;
197         u8 address;
198         u8 reserved[2];
199 } __packed;
200
201
202 struct hbm_props_response {
203         u8 hbm_cmd;
204         u8 address;
205         u8 status;
206         u8 reserved[1];
207         struct mei_client_properties client_properties;
208 } __packed;
209
210 /**
211  * struct hbm_client_connect_request - connect/disconnect request
212  *
213  * @hbm_cmd - bus message command header
214  * @me_addr - address of the client in ME
215  * @host_addr - address of the client in the driver
216  * @reserved
217  */
218 struct hbm_client_connect_request {
219         u8 hbm_cmd;
220         u8 me_addr;
221         u8 host_addr;
222         u8 reserved;
223 } __packed;
224
225 /**
226  * struct hbm_client_connect_response - connect/disconnect response
227  *
228  * @hbm_cmd - bus message command header
229  * @me_addr - address of the client in ME
230  * @host_addr - address of the client in the driver
231  * @status - status of the request
232  */
233 struct hbm_client_connect_response {
234         u8 hbm_cmd;
235         u8 me_addr;
236         u8 host_addr;
237         u8 status;
238 } __packed;
239
240
241 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
242
243 struct hbm_flow_control {
244         u8 hbm_cmd;
245         u8 me_addr;
246         u8 host_addr;
247         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
248 } __packed;
249
250
251 #endif