3 * Intel Management Engine Interface (Intel MEI) Linux driver
4 * Copyright (c) 2003-2012, Intel Corporation.
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.
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
19 #ifndef _MEI_INTERFACE_H_
20 #define _MEI_INTERFACE_H_
22 #include <linux/mei.h>
27 void mei_read_slots(struct mei_device *dev,
28 unsigned char *buffer,
29 unsigned long buffer_length);
31 int mei_write_message(struct mei_device *dev,
32 struct mei_msg_hdr *header,
33 unsigned char *write_buffer,
34 unsigned long write_length);
36 bool mei_hbuf_is_empty(struct mei_device *dev);
38 int mei_hbuf_empty_slots(struct mei_device *dev);
40 static inline size_t mei_hbuf_max_data(const struct mei_device *dev)
42 return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
45 /* get slots (dwords) from a message length + header (bytes) */
46 static inline unsigned char mei_data2slots(size_t length)
48 return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
51 int mei_count_full_read_slots(struct mei_device *dev);
54 int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl);
58 int mei_wd_send(struct mei_device *dev);
59 int mei_wd_stop(struct mei_device *dev);
60 int mei_wd_host_init(struct mei_device *dev);
62 * mei_watchdog_register - Registering watchdog interface
63 * once we got connection to the WD Client
66 void mei_watchdog_register(struct mei_device *dev);
68 * mei_watchdog_unregister - Unregistering watchdog interface
71 void mei_watchdog_unregister(struct mei_device *dev);
73 int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl);
75 int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl);
77 int mei_disconnect(struct mei_device *dev, struct mei_cl *cl);
78 int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
79 int mei_connect(struct mei_device *dev, struct mei_cl *cl);
81 #endif /* _MEI_INTERFACE_H_ */