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