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 #ifndef _MEI_HBM_H_
18 #define _MEI_HBM_H_
19
20 struct mei_device;
21 struct mei_msg_hdr;
22 struct mei_cl;
23
24 /**
25 * enum mei_hbm_state - host bus message protocol state
26 *
27 * @MEI_HBM_IDLE : protocol not started
28 * @MEI_HBM_START : start request message was sent
29 * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent
30 * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties
31 */
32 enum mei_hbm_state {
33 MEI_HBM_IDLE = 0,
34 MEI_HBM_START,
35 MEI_HBM_ENUM_CLIENTS,
36 MEI_HBM_CLIENT_PROPERTIES,
37 MEI_HBM_STARTED,
38 MEI_HBM_STOP,
39 };
40
41 void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
42
mei_hbm_hdr(struct mei_msg_hdr * hdr,size_t length)43 static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
44 {
45 hdr->host_addr = 0;
46 hdr->me_addr = 0;
47 hdr->length = length;
48 hdr->msg_complete = 1;
49 hdr->reserved = 0;
50 }
51
52 int mei_hbm_start_req(struct mei_device *dev);
53 int mei_hbm_start_wait(struct mei_device *dev);
54 int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl);
55 int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl);
56 int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
57
58
59 #endif /* _MEI_HBM_H_ */
60
61