aboutsummaryrefslogtreecommitdiff
path: root/drivers/misc/mei/hw.h
blob: b3b4c6dcbaa76ca2bb5ded68acf5f0091a27422c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
/*
 *
 * 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
 */
#define MEI_INTEROP_TIMEOUT    (HZ * 7)
#define MEI_CONNECT_TIMEOUT		3	/* at least 2 seconds */

#define CONNECT_TIMEOUT        15	/* HPS definition */
#define INIT_CLIENTS_TIMEOUT   15	/* HPS definition */

#define IAMTHIF_STALL_TIMER		12	/* seconds */
#define IAMTHIF_READ_TIMER		10000	/* ms */

/*
 * Internal Clients Number
 */
#define MEI_WD_HOST_CLIENT_ID          1
#define MEI_IAMTHIF_HOST_CLIENT_ID     2

/*
 * MEI device IDs
 */
#define MEI_DEV_ID_82946GZ    0x2974  /* 82946GZ/GL */
#define MEI_DEV_ID_82G35      0x2984  /* 82G35 Express */
#define MEI_DEV_ID_82Q965     0x2994  /* 82Q963/Q965 */
#define MEI_DEV_ID_82G965     0x29A4  /* 82P965/G965 */

#define MEI_DEV_ID_82GM965    0x2A04  /* Mobile PM965/GM965 */
#define MEI_DEV_ID_82GME965   0x2A14  /* Mobile GME965/GLE960 */

#define MEI_DEV_ID_ICH9_82Q35 0x29B4  /* 82Q35 Express */
#define MEI_DEV_ID_ICH9_82G33 0x29C4  /* 82G33/G31/P35/P31 Express */
#define MEI_DEV_ID_ICH9_82Q33 0x29D4  /* 82Q33 Express */
#define MEI_DEV_ID_ICH9_82X38 0x29E4  /* 82X38/X48 Express */
#define MEI_DEV_ID_ICH9_3200  0x29F4  /* 3200/3210 Server */

#define MEI_DEV_ID_ICH9_6     0x28B4  /* Bearlake */
#define MEI_DEV_ID_ICH9_7     0x28C4  /* Bearlake */
#define MEI_DEV_ID_ICH9_8     0x28D4  /* Bearlake */
#define MEI_DEV_ID_ICH9_9     0x28E4  /* Bearlake */
#define MEI_DEV_ID_ICH9_10    0x28F4  /* Bearlake */

#define MEI_DEV_ID_ICH9M_1    0x2A44  /* Cantiga */
#define MEI_DEV_ID_ICH9M_2    0x2A54  /* Cantiga */
#define MEI_DEV_ID_ICH9M_3    0x2A64  /* Cantiga */
#define MEI_DEV_ID_ICH9M_4    0x2A74  /* Cantiga */

#define MEI_DEV_ID_ICH10_1    0x2E04  /* Eaglelake */
#define MEI_DEV_ID_ICH10_2    0x2E14  /* Eaglelake */
#define MEI_DEV_ID_ICH10_3    0x2E24  /* Eaglelake */
#define MEI_DEV_ID_ICH10_4    0x2E34  /* Eaglelake */

#define MEI_DEV_ID_IBXPK_1    0x3B64  /* Calpella */
#define MEI_DEV_ID_IBXPK_2    0x3B65  /* Calpella */

#define MEI_DEV_ID_CPT_1      0x1C3A  /* Couger Point */
#define MEI_DEV_ID_PBG_1      0x1D3A  /* C600/X79 Patsburg */

#define MEI_DEV_ID_PPT_1      0x1E3A  /* Panther Point */
#define MEI_DEV_ID_PPT_2      0x1CBA  /* Panther Point */
#define MEI_DEV_ID_PPT_3      0x1DBA  /* Panther Point */

/*
 * MEI HW Section
 */

/* MEI registers */
/* H_CB_WW - Host Circular Buffer (CB) Write Window register */
#define H_CB_WW    0
/* H_CSR - Host Control Status register */
#define H_CSR      4
/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */
#define ME_CB_RW   8
/* ME_CSR_HA - ME Control Status Host Access register (read only) */
#define ME_CSR_HA  0xC


/* register bits of H_CSR (Host Control Status register) */
/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */
#define H_CBD             0xFF000000
/* Host Circular Buffer Write Pointer */
#define H_CBWP            0x00FF0000
/* Host Circular Buffer Read Pointer */
#define H_CBRP            0x0000FF00
/* Host Reset */
#define H_RST             0x00000010
/* Host Ready */
#define H_RDY             0x00000008
/* Host Interrupt Generate */
#define H_IG              0x00000004
/* Host Interrupt Status */
#define H_IS              0x00000002
/* Host Interrupt Enable */
#define H_IE              0x00000001


/* register bits of ME_CSR_HA (ME Control Status Host Access register) */
/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only
access to ME_CBD */
#define ME_CBD_HRA        0xFF000000
/* ME CB Write Pointer HRA - host read only access to ME_CBWP */
#define ME_CBWP_HRA       0x00FF0000
/* ME CB Read Pointer HRA - host read only access to ME_CBRP */
#define ME_CBRP_HRA       0x0000FF00
/* ME Reset HRA - host read only access to ME_RST */
#define ME_RST_HRA        0x00000010
/* ME Ready HRA - host read only access to ME_RDY */
#define ME_RDY_HRA        0x00000008
/* ME Interrupt Generate HRA - host read only access to ME_IG */
#define ME_IG_HRA         0x00000004
/* ME Interrupt Status HRA - host read only access to ME_IS */
#define ME_IS_HRA         0x00000002
/* ME Interrupt Enable HRA - host read only access to ME_IE */
#define ME_IE_HRA         0x00000001

/*
 * MEI Version
 */
#define HBM_MINOR_VERSION                   0
#define HBM_MAJOR_VERSION                   1
#define HBM_TIMEOUT                         1	/* 1 second */

/* 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

/*
 * 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
};

/*
 * Client Connect Status
 * used by hbm_client_connect_response.status
 */
enum client_connect_status_types {
	CCS_SUCCESS = 0x00,
	CCS_NOT_FOUND = 0x01,
	CCS_ALREADY_STARTED = 0x02,
	CCS_OUT_OF_RESOURCES = 0x03,
	CCS_MESSAGE_SMALL = 0x04
};

/*
 * Client Disconnect Status
 */
enum client_disconnect_status_types {
	CDS_SUCCESS = 0x00
};

/*
 *  MEI BUS Interface Section
 */
struct mei_msg_hdr {
	u32 me_addr:8;
	u32 host_addr:8;
	u32 length:9;
	u32 reserved:6;
	u32 msg_complete:1;
} __packed;


struct mei_bus_message {
	u8 hbm_cmd;
	u8 data[0];
} __packed;

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;

struct hbm_host_enum_request {
	u8 hbm_cmd;
	u8 reserved[3];
} __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 address;
	u8 reserved[2];
} __packed;


struct hbm_props_response {
	u8 hbm_cmd;
	u8 address;
	u8 status;
	u8 reserved[1];
	struct mei_client_properties client_properties;
} __packed;

struct hbm_client_connect_request {
	u8 hbm_cmd;
	u8 me_addr;
	u8 host_addr;
	u8 reserved;
} __packed;

struct hbm_client_connect_response {
	u8 hbm_cmd;
	u8 me_addr;
	u8 host_addr;
	u8 status;
} __packed;

struct hbm_client_disconnect_request {
	u8 hbm_cmd;
	u8 me_addr;
	u8 host_addr;
	u8 reserved[1];
} __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;

struct mei_me_client {
	struct mei_client_properties props;
	u8 client_id;
	u8 mei_flow_ctrl_creds;
} __packed;


#endif