Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
18
19#ifndef _MEI_INTERFACE_H_
20#define _MEI_INTERFACE_H_
21
22#include <linux/mei.h>
23#include "mei_dev.h"
24
25
26#define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */
27#define AMT_WD_MIN_TIMEOUT 120 /* seconds */
28#define AMT_WD_MAX_TIMEOUT 65535 /* seconds */
29
30#define MEI_WATCHDOG_DATA_SIZE 16
31#define MEI_START_WD_DATA_SIZE 20
32#define MEI_WD_PARAMS_SIZE 4
33
34
35void mei_read_slots(struct mei_device *dev,
36 unsigned char *buffer,
37 unsigned long buffer_length);
38
39int mei_write_message(struct mei_device *dev,
40 struct mei_msg_hdr *header,
41 unsigned char *write_buffer,
42 unsigned long write_length);
43
44bool mei_hbuf_is_empty(struct mei_device *dev);
45
46int mei_hbuf_empty_slots(struct mei_device *dev);
47
48static inline size_t mei_hbuf_max_data(const struct mei_device *dev)
49{
50 return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
51}
52
53/* get slots (dwords) from a message length + header (bytes) */
54static inline unsigned char mei_data2slots(size_t length)
55{
56 return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
57}
58
59int mei_count_full_read_slots(struct mei_device *dev);
60
61
62int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl);
63
64
65
66int mei_wd_send(struct mei_device *dev);
67int mei_wd_stop(struct mei_device *dev, bool preserve);
68int mei_wd_host_init(struct mei_device *dev);
69/*
70 * mei_watchdog_register - Registering watchdog interface
71 * once we got connection to the WD Client
72 * @dev - mei device
73 */
74void mei_watchdog_register(struct mei_device *dev);
75/*
76 * mei_watchdog_unregister - Unregistering watchdog interface
77 * @dev - mei device
78 */
79void mei_watchdog_unregister(struct mei_device *dev);
80
81int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl);
82
83int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl);
84
85int mei_disconnect(struct mei_device *dev, struct mei_cl *cl);
86int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
87int mei_connect(struct mei_device *dev, struct mei_cl *cl);
88
89#endif /* _MEI_INTERFACE_H_ */