1 What: /sys/class/mei/
2 Date: May 2014
3 KernelVersion: 3.17
4 Contact: Tomas Winkler <tomas.winkler@in
5 Description:
6 The mei/ class sub-directory b
7
8
9 What: /sys/class/mei/mei<N>/
10 Date: May 2014
11 KernelVersion: 3.17
12 Contact: Tomas Winkler <tomas.winkler@in
13 Description:
14 The /sys/class/mei/meiN direct
15 each probed mei device
16
17 What: /sys/class/mei/mei<N>/fw_statu
18 Date: Nov 2014
19 KernelVersion: 3.19
20 Contact: Tomas Winkler <tomas.winkler@in
21 Description: Display fw status registers co
22
23 The ME FW writes its status in
24 registers for BIOS and OS to m
25
26 The register contains running
27 state, error codes, and others
28 are decoded depends on PCH or
29 Also number of registers varie
30 depending on generation.
31
32 What: /sys/class/mei/mei<N>/hbm_ver
33 Date: Aug 2016
34 KernelVersion: 4.9
35 Contact: Tomas Winkler <tomas.winkler@in
36 Description: Display the negotiated HBM pro
37
38 The HBM protocol version negot
39 between the driver and the dev
40
41 What: /sys/class/mei/mei<N>/hbm_ver_
42 Date: Aug 2016
43 KernelVersion: 4.9
44 Contact: Tomas Winkler <tomas.winkler@in
45 Description: Display the driver HBM protoco
46
47 The HBM protocol version suppo
48
49 What: /sys/class/mei/mei<N>/tx_queue
50 Date: Jan 2018
51 KernelVersion: 4.16
52 Contact: Tomas Winkler <tomas.winkler@in
53 Description: Configure tx queue limit
54
55 Set maximal number of pending
56 per opened session.
57
58 What: /sys/class/mei/mei<N>/fw_ver
59 Date: May 2018
60 KernelVersion: 4.18
61 Contact: Tomas Winkler <tomas.winkler@in
62 Description: Display the ME firmware versio
63
64 The version of the platform ME
65 <platform>:<major>.<minor>.<mi
66 There can be up to three such
67 FW components.
68
69 What: /sys/class/mei/mei<N>/dev_stat
70 Date: Mar 2019
71 KernelVersion: 5.1
72 Contact: Tomas Winkler <tomas.winkler@in
73 Description: Display the ME device state.
74
75 The device state can have foll
76 INITIALIZING
77 INIT_CLIENTS
78 ENABLED
79 RESETTING
80 DISABLED
81 POWER_DOWN
82 POWER_UP
83
84 What: /sys/class/mei/mei<N>/trc
85 Date: Nov 2019
86 KernelVersion: 5.5
87 Contact: Tomas Winkler <tomas.winkler@in
88 Description: Display trc status register co
89
90 The ME FW writes Glitch Detect
91 status information into trc st
92 for BIOS and OS to monitor fw
93
94 What: /sys/class/mei/mei<N>/kind
95 Date: Jul 2020
96 KernelVersion: 5.8
97 Contact: Tomas Winkler <tomas.winkler@in
98 Description: Display kind of the device
99
100 Generic devices are marked as
101 while special purpose have the
102 names.
103 Available options:
104 - mei: generic mei device.
105 - itouch: itouch (ipts) mei d
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