1STRUCT CCW_DEV_ID(9)              The ccw bus             STRUCT CCW_DEV_ID(9)
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NAME

6       struct_ccw_dev_id - unique identifier for ccw devices
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SYNOPSIS

9       struct ccw_dev_id {
10         u8 ssid;
11         u16 devno;
12       };
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MEMBERS

15       ssid
16           subchannel set id
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18       devno
19           device number
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DESCRIPTION

22       This structure is not directly based on any hardware structure. The
23       hardware identifies a device by its device number and its subchannel,
24       which is in turn identified by its id. In order to get a unique
25       identifier for ccw devices across subchannel sets, struct ccw_dev_id
26       has been introduced.
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AUTHOR

29       Cornelia Huck <cornelia.huck@de.ibm.com>
30           Author.
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33Kernel Hackers Manual 2.6.         June 2019              STRUCT CCW_DEV_ID(9)
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