Method and apparatus for batching commands in a small computer system interface system

A method for processing commands in a small computer system interface controller, the method comprising:

• receiving a current command from a host driver, wherein the current command is associated with a current target identifier for a target device;
• determining whether a subsequent command is present;
• responsive to the subsequent command being present, determining whether the current target identifier matches a subsequent target identifier associated with the subsequent command;
• batching the current command with the subsequent command in a group if the current target identifier matches the subsequent target identifier;
• sending the group to the target device using a single connection if a subsequent command is absent;
• and
• sending the group to the target using a single connection if a match between the current target identifying and the subsequent identifier is absent.

A controller comprising:

• a host interface, wherein the controller receives messages from a host through the host interface;
• a bus interface, wherein the controller sends the messages to a target through the bus interface;
• and
• a processing unit connected to the host interface and the bus interface, wherein the processing unit executed instructions to identify reception of a current command from a host in which the current command includes a first target identifier, determine whether a subsequent command is available after the current command, determine whether the first target identifier matches a second target identifier in the subsequent command, and batch the current command with the subsequent command if the first target identifier matches the second target identifier, wherein the current command and the subsequent command are sent to the target using a single connection.

A controller comprising:

• a host interface, wherein the controller receives messages from a host through the host interface;
• a bus interface, wherein the controller sends the messages to a target through the bus interface;
• and
• a processing unit connected to the host interface and the bus interface, wherein the processing unit executed instructions to receive a current command from a host driver, wherein the current command is associated with a current target identifier for a target device;
• determine whether a subsequent command is present;
• determine whether the current target identifier matches a subsequent target identifier associated with the subsequent command in response to the subsequent command being present;
• batch the current command with the subsequent command in a group if the current target identifier matches the subsequent target identifier;
• send the group to the target device using a single connection if a subsequent command is absent;
• and send the group to the target using a single connection if a match between the current target identifying and the subsequent identifier is absent.

A controller for processing commands in a small computer system interface controller, the controller comprising:

• receiving means for receiving a current command, wherein the current command is associated with a first target identifier;
• first determining means for determining whether a subsequent command is available after the current command;
• second determining means for determining whether the first target identifier matches a second target identifier associated with the subsequent command if the subsequent command is available;
• and
• batching means for batching the current command with the subsequent command if the first target identifier matches the second target identifier, wherein the current command and the subsequent command are sent from the small computer system interface controller to a target using a single connection.

A controller for processing commands in a small computer system interface controller, the controller comprising:

• receiving means for receiving a current command from a host driver, wherein the current command is associated with a current target identifier for a target device;
• first determining means for determining whether a subsequent command is present;
• second determining means, responsive to the subsequent command being present, for determining whether the current target identifier matches a subsequent target identifier associated with the subsequent command;
• batching means for batching the current command with the subsequent command in a group if the current target identifier matches the subsequent target identifier;
• first sending means for sending the group to the target device using a single connection if a subsequent command is absent;
• and
• second sending means for sending the group to the target using a single connection if a match between the current target identifying and the subsequent identifier is absent.

A computer program product in a computer readable medium for processing commands in a small computer system interface controller, the computer program product comprising:

• first instructions for receiving a current command, wherein the current command is associated with a first target identifier;
• second instructions for determining whether a subsequent command is available after the current command;
• third instructions for determining whether the first target identifier matches a second target identifier associated with the subsequent command if the subsequent command is available;
• and
• fourth instructions for batching the current command with the subsequent command if the first target identifier matches the second target identifier, wherein the current command and the subsequent command are sent from the small computer system interface controller to a target using a single connection.

A computer program product in a computer readable medium for processing commands in a small computer system interface controller, the computer program product comprising:

• first instructions for receiving a current command from a host driver, wherein the current command is associated with a current target identifier for a target device;
• second instructions for determining whether a subsequent command is present;
• third instructions, responsive to the subsequent command being present, for determining whether the current target identifier matches a subsequent target identifier associated with the subsequent command;
• fourth instructions for batching the current command with the subsequent command in a group if the current target identifier matches the subsequent target identifier;
• fifth instructions for sending the group to the target device using a single connection if a subsequent command is absent;
• and
• sixth instructions for sending the group to the target using a single connection if a match between the current target identifying and the subsequent identifier is absent.