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googlers / maze / linux / 48a97352e18f6ec90355ce1ea70a3f750664adfc / . / drivers / misc / mei / interface.h
blob: ec6c785a3961db4cd82e347436b23817326a026b [file] [log] [blame]
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]1/*
2 *
3 * Intel Management Engine Interface (Intel MEI) Linux driver
Tomas Winkler733ba912012-02-09 19:25:53 +0200[diff] [blame]4 * Copyright (c) 2003-2012, Intel Corporation.
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]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
Tomas Winkler4f3afe12012-05-09 16:38:59 +0300[diff] [blame]22#include <linux/mei.h>
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]23#include "mei_dev.h"
24
25
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]26
27void mei_read_slots(struct mei_device *dev,
Tomas Winkleredf1eed2012-02-09 19:25:54 +0200[diff] [blame]28 unsigned char *buffer,
29 unsigned long buffer_length);
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]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
Tomas Winkler726917f2012-06-25 23:46:28 +0300[diff] [blame]36bool mei_hbuf_is_empty(struct mei_device *dev);
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]37
Tomas Winkler726917f2012-06-25 23:46:28 +0300[diff] [blame]38int mei_hbuf_empty_slots(struct mei_device *dev);
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]39
Tomas Winkler24aadc82012-06-25 23:46:27 +0300[diff] [blame]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
Tomas Winkler7bdf72d2012-07-04 19:24:52 +0300[diff] [blame]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
Tomas Winkler726917f2012-06-25 23:46:28 +0300[diff] [blame]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
Tomas Winkler24aadc82012-06-25 23:46:27 +0300[diff] [blame]57
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]58int mei_wd_send(struct mei_device *dev);
Tomas Winklerc216fde2012-08-16 19:39:43 +0300[diff] [blame]59int mei_wd_stop(struct mei_device *dev);
Tomas Winkler9487eb02012-04-03 23:34:58 +0300[diff] [blame]60int mei_wd_host_init(struct mei_device *dev);
Tomas Winkler70cd5332011-12-22 18:50:50 +0200[diff] [blame]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/*
Justin P. Mattock5f9092f2012-03-12 07:18:09 -0700[diff] [blame]68 * mei_watchdog_unregister - Unregistering watchdog interface
Tomas Winkler70cd5332011-12-22 18:50:50 +0200[diff] [blame]69 * @dev - mei device
70 */
71void mei_watchdog_unregister(struct mei_device *dev);
Oren Weil3ce72722011-05-15 13:43:43 +0300[diff] [blame]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_ */