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
|
/*
*
* 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_CLIENT_H_
#define _MEI_CLIENT_H_
#include <linux/types.h>
#include <linux/watchdog.h>
#include <linux/poll.h>
#include <linux/mei.h>
#include "mei_dev.h"
/*
* reference counting base function
*/
void mei_me_cl_init(struct mei_me_client *me_cl);
void mei_me_cl_put(struct mei_me_client *me_cl);
struct mei_me_client *mei_me_cl_get(struct mei_me_client *me_cl);
void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl);
void mei_me_cl_del(struct mei_device *dev, struct mei_me_client *me_cl);
struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev,
const uuid_le *uuid);
struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
const uuid_le *uuid, u8 client_id);
void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid);
void mei_me_cl_rm_by_uuid_id(struct mei_device *dev,
const uuid_le *uuid, u8 id);
void mei_me_cl_rm_all(struct mei_device *dev);
/**
* mei_me_cl_is_active - check whether me client is active in the fw
*
* @me_cl: me client
*
* Return: true if the me client is active in the firmware
*/
static inline bool mei_me_cl_is_active(const struct mei_me_client *me_cl)
{
return !list_empty_careful(&me_cl->list);
}
/**
* mei_me_cl_uuid - return me client protocol name (uuid)
*
* @me_cl: me client
*
* Return: me client protocol name
*/
static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl)
{
return &me_cl->props.protocol_name;
}
/*
* MEI IO Functions
*/
struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
struct file *fp);
void mei_io_cb_free(struct mei_cl_cb *priv_cb);
int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length);
/**
* mei_io_list_init - Sets up a queue list.
*
* @list: An instance cl callback structure
*/
static inline void mei_io_list_init(struct mei_cl_cb *list)
{
INIT_LIST_HEAD(&list->list);
}
void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
/*
* MEI Host Client Functions
*/
struct mei_cl *mei_cl_allocate(struct mei_device *dev);
void mei_cl_init(struct mei_cl *cl, struct mei_device *dev);
int mei_cl_link(struct mei_cl *cl, int id);
int mei_cl_unlink(struct mei_cl *cl);
struct mei_cl *mei_cl_alloc_linked(struct mei_device *dev, int id);
struct mei_cl_cb *mei_cl_read_cb(const struct mei_cl *cl,
const struct file *fp);
void mei_cl_read_cb_flush(const struct mei_cl *cl, const struct file *fp);
struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
enum mei_cb_file_ops type, struct file *fp);
int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp);
int mei_cl_flow_ctrl_creds(struct mei_cl *cl);
int mei_cl_flow_ctrl_reduce(struct mei_cl *cl);
/*
* MEI input output function prototype
*/
/**
* mei_cl_is_connected - host client is connected
*
* @cl: host client
*
* Return: true if the host client is connected
*/
static inline bool mei_cl_is_connected(struct mei_cl *cl)
{
return cl->state == MEI_FILE_CONNECTED;
}
/**
* mei_cl_me_id - me client id
*
* @cl: host client
*
* Return: me client id or 0 if client is not connected
*/
static inline u8 mei_cl_me_id(const struct mei_cl *cl)
{
return cl->me_cl ? cl->me_cl->client_id : 0;
}
/**
* mei_cl_mtu - maximal message that client can send and receive
*
* @cl: host client
*
* Return: mtu
*/
static inline size_t mei_cl_mtu(const struct mei_cl *cl)
{
return cl->me_cl->props.max_msg_length;
}
/**
* mei_cl_is_fixed_address - check whether the me client uses fixed address
*
* @cl: host client
*
* Return: true if the client is connected and it has fixed me address
*/
static inline bool mei_cl_is_fixed_address(const struct mei_cl *cl)
{
return cl->me_cl && cl->me_cl->props.fixed_address;
}
/**
* mei_cl_is_single_recv_buf- check whether the me client
* uses single receiving buffer
*
* @cl: host client
*
* Return: true if single_recv_buf == 1; 0 otherwise
*/
static inline bool mei_cl_is_single_recv_buf(const struct mei_cl *cl)
{
return cl->me_cl->props.single_recv_buf;
}
/**
* mei_cl_uuid - client's uuid
*
* @cl: host client
*
* Return: return uuid of connected me client
*/
static inline const uuid_le *mei_cl_uuid(const struct mei_cl *cl)
{
return mei_me_cl_uuid(cl->me_cl);
}
int mei_cl_disconnect(struct mei_cl *cl);
void mei_cl_set_disconnected(struct mei_cl *cl);
int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list);
int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
struct file *file);
int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list);
int mei_cl_read_start(struct mei_cl *cl, size_t length, struct file *fp);
int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_msg_hdr *hdr,
struct mei_cl_cb *cmpl_list);
int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking);
int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list);
void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb);
void mei_host_client_init(struct work_struct *work);
void mei_cl_all_disconnect(struct mei_device *dev);
void mei_cl_all_wakeup(struct mei_device *dev);
void mei_cl_all_write_clear(struct mei_device *dev);
#define MEI_CL_FMT "cl:host=%02d me=%02d "
#define MEI_CL_PRM(cl) (cl)->host_client_id, mei_cl_me_id(cl)
#define cl_dbg(dev, cl, format, arg...) \
dev_dbg((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#define cl_err(dev, cl, format, arg...) \
dev_err((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#endif /* _MEI_CLIENT_H_ */
|
