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.