Emulating a SCSI device

[Aniruddha Bohra]

Hello
    I am trying to write a SIM module for FreeBSD which basically
emulates a SCSI controller with a disk attached at target 0 lun 0.

    I go as far as the action function of the controller getting called
with a XPT_PATH_INQ - where I fill in the fake data.

    Nothing happens after that. I have looked for documentation
of how to get the psuedo disk attached to the da driver but did
not make much headway.
   
    My question is : How do I get the da or any SCSI peripheral
driver attach to the emulated disk.

    I would appreciate any help or pointers.

Thanks
Aniruddha