1 What: /sys/bus/css/devices/.../type 1 What: /sys/bus/css/devices/.../type
2 Date: March 2008 2 Date: March 2008
3 Contact: linux-s390@vger.kernel.org !! 3 Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
>> 4 linux-s390@vger.kernel.org
4 Description: Contains the subchannel type, 5 Description: Contains the subchannel type, as reported by the hardware.
5 This attribute is present for 6 This attribute is present for all subchannel types.
6 7
7 What: /sys/bus/css/devices/.../modal 8 What: /sys/bus/css/devices/.../modalias
8 Date: March 2008 9 Date: March 2008
9 Contact: linux-s390@vger.kernel.org !! 10 Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
>> 11 linux-s390@vger.kernel.org
10 Description: Contains the module alias as r 12 Description: Contains the module alias as reported with uevents.
11 It is of the format css:t<type 13 It is of the format css:t<type> and present for all
12 subchannel types. 14 subchannel types.
13 15
14 What: /sys/bus/css/drivers/io_subcha 16 What: /sys/bus/css/drivers/io_subchannel/.../chpids
15 Date: December 2002 17 Date: December 2002
16 Contact: linux-s390@vger.kernel.org !! 18 Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
>> 19 linux-s390@vger.kernel.org
17 Description: Contains the ids of the channe 20 Description: Contains the ids of the channel paths used by this
18 subchannel, as reported by the 21 subchannel, as reported by the channel subsystem
19 during subchannel recognition. 22 during subchannel recognition.
20 <<
21 Note: This is an I/O-subchanne 23 Note: This is an I/O-subchannel specific attribute.
22 Users: s390-tools, HAL 24 Users: s390-tools, HAL
23 25
24 What: /sys/bus/css/drivers/io_subcha 26 What: /sys/bus/css/drivers/io_subchannel/.../pimpampom
25 Date: December 2002 27 Date: December 2002
26 Contact: linux-s390@vger.kernel.org !! 28 Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
>> 29 linux-s390@vger.kernel.org
27 Description: Contains the PIM/PAM/POM value 30 Description: Contains the PIM/PAM/POM values, as reported by the
28 channel subsystem when last qu 31 channel subsystem when last queried by the common I/O
29 layer (this implies that this 32 layer (this implies that this attribute is not necessarily
30 in sync with the values curren 33 in sync with the values current in the channel subsystem).
31 <<
32 Note: This is an I/O-subchanne 34 Note: This is an I/O-subchannel specific attribute.
33 Users: s390-tools, HAL 35 Users: s390-tools, HAL
34 <<
35 What: /sys/bus/css/devices/.../drive <<
36 Date: June 2019 <<
37 Contact: linux-s390@vger.kernel.org <<
38 Description: This file allows the driver fo <<
39 specified, only a driver with <<
40 to driver_override will have a <<
41 device. The override is specif <<
42 driver_override file (echo vfi <<
43 may be cleared with an empty s <<
44 This returns the device to sta <<
45 Writing to driver_override doe <<
46 device from its current driver <<
47 automatically load the specifi <<
48 matching name is currently loa <<
49 will not bind to any driver. <<
50 opt-out of driver binding usin <<
51 "none". Only a single driver <<
52 there is no support for parsin <<
53 <<
54 Note that unlike the mechanism <<
55 file does not allow to overrid <<
56 the driver must still match th <<
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