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STRUCT CCW0(9) The ccw bus STRUCT CCW0(9)

NAME

struct_ccw0 - channel command word

SYNOPSIS

struct ccw0 {
  __u8 cmd_code;
  __u32 cda:24;
  __u8 flags;
  __u8 reserved;
  __u16 count;
};

MEMBERS

__u8 cmd_code
command code

__u32:24 cda

data address

__u8 flags

flags, like IDA addressing, etc.

__u8 reserved

will be ignored

__u16 count

byte count

DESCRIPTION

The format-0 ccw structure.

AUTHOR

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

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12