Providing extended measurement data in an I/O processing system
First Claim
1. An article of manufacture comprising at least one computer usable medium having computer readable program code logic to provide extended measurement word data from a control unit to a channel subsystem of an input/output (I/O) processing system, the computer readable program code logic for performing a method comprising:
- receiving a command message from the channel subsystem at the control unit, wherein the command message is a transport command information unit message including a transport command control block (TCCB), the TCCB including at least one device control word (DCW) and having a location identified by a transport control word (TCW);
initiating at the control unit a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit;
storing the plurality of time values as extended measurement word data at the control unit in a response message; and
outputting the response message including the extended measurement word data from the control unit to the channel subsystem.
1 Assignment
0 Petitions
Accused Products
Abstract
An article of manufacture, an apparatus, and a method for providing extended measurement word data from a control unit to a channel subsystem of an I/O processing system are disclosed. The article of manufacture includes at least one computer usable medium having computer readable program code logic. The computer readable program code logic performs a method including receiving a command message from the channel subsystem at the control unit, and initiating a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit. The computer readable program code logic also populates extended measurement word data at the control unit including the plurality of time values, and outputs the extended measurement word data from the control unit to the channel subsystem.
-
Citations
20 Claims
-
1. An article of manufacture comprising at least one computer usable medium having computer readable program code logic to provide extended measurement word data from a control unit to a channel subsystem of an input/output (I/O) processing system, the computer readable program code logic for performing a method comprising:
-
receiving a command message from the channel subsystem at the control unit, wherein the command message is a transport command information unit message including a transport command control block (TCCB), the TCCB including at least one device control word (DCW) and having a location identified by a transport control word (TCW); initiating at the control unit a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit; storing the plurality of time values as extended measurement word data at the control unit in a response message; and outputting the response message including the extended measurement word data from the control unit to the channel subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for providing extended measurement word data from a control unit to a channel subsystem of an input/output (I/O) processing system, the apparatus comprising:
a control unit in communication with a channel subsystem of an I/O processing system, the control unit capable of commanding and determining status of an I/O device, the control unit configured to perform a method comprising; receiving a command message from the channel subsystem at the control unit for the I/O device, wherein the command message is a transport command information unit message including a transport command control block (TCCB), the TCCB including at least one device control word (DCW) and having a location identified by a transport control word (TCW); initiating at the control unit a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit; storing the plurality of time values as extended measurement word data at the control unit in a response message; and outputting the response message including the extended measurement word data from the control unit to the channel subsystem. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
17. A method for providing extended measurement word data from a control unit to a channel subsystem of an input/output (I/O) processing system, the method comprising:
-
receiving a command message from the channel subsystem at the control unit, wherein the command message is a transport command information unit message including a transport command control block (TCCB), the TCCB including at least one device control word (DCW) and having a location identified by a transport control word (TCW); initiating at the control unit a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit; storing the plurality of time values as extended measurement word data at the control unit in a response message; and outputting the response message including the extended measurement word data from the control unit to the channel subsystem. - View Dependent Claims (18, 19, 20)
-
Specification