ATA_SCSI_TRANSLATE(9) libata SCSI translation/emulat ATA_SCSI_TRANSLATE(9)
NAME ata_scsi_translate - Translate then issue SCSI command to ATA device
SYNOPSIS int ata_scsi_translate(struct ata_device * dev, struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *), ata_xlat_func_t xlat_func);
ARGUMENTS dev ATA device to which the command is addressed
cmd SCSI command to execute
done SCSI command completion function
xlat_func Actor which translates cmd to an ATA taskfile
DESCRIPTION Our ->queuecommand function has decided that the SCSI command issued can be directly translated into an ATA command, rather than handled internally.
This function sets up an ata_queued_cmd structure for the SCSI command, and sends that ata_queued_cmd to the hardware.
The xlat_func argument (actor) returns 0 if ready to execute ATA command, else 1 to finish translation. If 1 is returned then cmd->result (and possibly cmd->sense_buffer) are assumed to be set reflecting an error condition or clean (early) termination.
LOCKING spin_lock_irqsave(host lock)
RETURNS 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command needs to be deferred.
AUTHOR Jeff Garzik Author.
COPYRIGHT Kernel Hackers Manual 2.6. May 2011 ATA_SCSI_TRANSLATE(9)