STRUCT CCW_DEV_ID

Section: The ccw bus (9)
Updated: February 2011
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NAME

struct_ccw_dev_id - unique identifier for ccw devices

SYNOPSIS

struct ccw_dev_id {
  u8 ssid;
  u16 devno;
};

MEMBERS

ssid

: subchannel set id

devno

: device number

DESCRIPTION

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

AUTHOR

Cornelia Huck <cornelia.huck@de.ibm.com>