Testing SCSI tagged queueing support with HP-UX

[Ravishankar Rajagopalan]

We have a SCSI disk emulator in which we are implementing SCSI tagged command queuing support and trying to test with our HP-UX v11i system. From the documentation of HP-UX 11i it is implied that it does support tagged queuing.

We find that HP-UX v11i has a command that allows us to increase the command queueing depth but is sending commands only with the SIMPLE attribute. I want to know how we can make the initiator generate commands with other attributes like ORDERED, ACA, Head of queue. Is there some tool with the HP-UX using which we can generate TCQ commands with these attributes? Also is tagged queueing support available in Linux and if so, how can it be tested ?

Thanks.
Ravi