STRUCT CCW1(9)                             The ccw bus                             STRUCT CCW1(9)



NAME
       struct_ccw1 - channel command word

SYNOPSIS
       struct ccw1 {
         __u8 cmd_code;
         __u8 flags;
         __u16 count;
         __u32 cda;
       };

MEMBERS
       cmd_code
           command code

       flags
           flags, like IDA addressing, etc.

       count
           byte count

       cda
           data address

DESCRIPTION
       The ccw is the basic structure to build channel programs that perform operations with the
       device or the control unit. Only Format-1 channel command words are supported.

AUTHOR
       Cornelia Huck <cornelia.huck AT de.com>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                            STRUCT CCW1(9)