summaryrefslogtreecommitdiffstats
path: root/drivers/misc/mei/hbm.h
blob: 5aa58cffdd2e5bc7b3ce2b80c7b6e8c33c0ab95f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2003-2018, Intel Corporation. All rights reserved.
 * Intel Management Engine Interface (Intel MEI) Linux driver
 */

#ifndef _MEI_HBM_H_
#define _MEI_HBM_H_

struct mei_device;
struct mei_msg_hdr;
struct mei_cl;

/**
 * enum mei_hbm_state - host bus message protocol state
 *
 * @MEI_HBM_IDLE : protocol not started
 * @MEI_HBM_STARTING : start request message was sent
 * @MEI_HBM_DR_SETUP : dma ring setup request message was sent
 * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent
 * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties
 * @MEI_HBM_STARTED : enumeration was completed
 * @MEI_HBM_STOPPED : stopping exchange
 */
enum mei_hbm_state {
	MEI_HBM_IDLE = 0,
	MEI_HBM_STARTING,
	MEI_HBM_DR_SETUP,
	MEI_HBM_ENUM_CLIENTS,
	MEI_HBM_CLIENT_PROPERTIES,
	MEI_HBM_STARTED,
	MEI_HBM_STOPPED,
};

const char *mei_hbm_state_str(enum mei_hbm_state state);

int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);

void mei_hbm_idle(struct mei_device *dev);
void mei_hbm_reset(struct mei_device *dev);
int mei_hbm_start_req(struct mei_device *dev);
int mei_hbm_start_wait(struct mei_device *dev);
int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl);
int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl);
int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl);
int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
bool mei_hbm_version_is_supported(struct mei_device *dev);
int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd);
void mei_hbm_pg_resume(struct mei_device *dev);
int mei_hbm_cl_notify_req(struct mei_device *dev,
			  struct mei_cl *cl, u8 request);

#endif /* _MEI_HBM_H_ */