Do not use as a SWI
For a driver, this is the back door by which drive scanning happens. The driver's entry point for this SWI is called with:
=> R0 -> SCSI inquiry block if a device exists (0 otherwise)
R7 -> CDFS control block - says which device is being scanned
If the driver wishes to claim this device for itself, it should return with R2 > registers.
If you are a non-SCSI driver, it is up to you which devices you claim - CDFS passes round all device/card/LUN combinations to drivers (all 8 > 256 of them), so you can attach yourself to any unused device. It is a good idea to leave those with SCSI devices attached alone, so a SCSI driver can pick them up if it wishes.
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