1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (c) 2003-2018, Intel Corporation. All rights reserved. |
4 | * Intel Management Engine Interface (Intel MEI) Linux driver |
5 | */ |
6 | |
7 | #ifndef _MEI_HBM_H_ |
8 | #define _MEI_HBM_H_ |
9 | |
10 | struct mei_device; |
11 | struct mei_msg_hdr; |
12 | struct mei_cl; |
13 | struct mei_dma_data; |
14 | |
15 | /** |
16 | * enum mei_hbm_state - host bus message protocol state |
17 | * |
18 | * @MEI_HBM_IDLE : protocol not started |
19 | * @MEI_HBM_STARTING : start request message was sent |
20 | * @MEI_HBM_CAP_SETUP : capabilities request message was sent |
21 | * @MEI_HBM_DR_SETUP : dma ring setup request message was sent |
22 | * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent |
23 | * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties |
24 | * @MEI_HBM_STARTED : enumeration was completed |
25 | * @MEI_HBM_STOPPED : stopping exchange |
26 | */ |
27 | enum mei_hbm_state { |
28 | MEI_HBM_IDLE = 0, |
29 | MEI_HBM_STARTING, |
30 | MEI_HBM_CAP_SETUP, |
31 | MEI_HBM_DR_SETUP, |
32 | MEI_HBM_ENUM_CLIENTS, |
33 | MEI_HBM_CLIENT_PROPERTIES, |
34 | MEI_HBM_STARTED, |
35 | MEI_HBM_STOPPED, |
36 | }; |
37 | |
38 | const char *mei_hbm_state_str(enum mei_hbm_state state); |
39 | |
40 | int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); |
41 | |
42 | void mei_hbm_idle(struct mei_device *dev); |
43 | void mei_hbm_reset(struct mei_device *dev); |
44 | int mei_hbm_start_req(struct mei_device *dev); |
45 | int mei_hbm_start_wait(struct mei_device *dev); |
46 | int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); |
47 | int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); |
48 | int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl); |
49 | int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); |
50 | bool mei_hbm_version_is_supported(struct mei_device *dev); |
51 | int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd); |
52 | void mei_hbm_pg_resume(struct mei_device *dev); |
53 | int mei_hbm_cl_notify_req(struct mei_device *dev, |
54 | struct mei_cl *cl, u8 request); |
55 | int mei_hbm_cl_dma_map_req(struct mei_device *dev, struct mei_cl *cl); |
56 | int mei_hbm_cl_dma_unmap_req(struct mei_device *dev, struct mei_cl *cl); |
57 | #endif /* _MEI_HBM_H_ */ |
58 | |
59 | |