ata_scsi_translate

ata_scsi_translate
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Name

ata_scsi_translate — Translate then issue SCSI command to ATA device

Synopsis

`void ata_scsi_translate (`	struct ata_port *	`ap`,
	struct ata_device *	`dev`,
	struct scsi_cmnd *	`cmd`,
	void (*	`done`) `(`struct scsi_cmnd *`)`,
	ata_xlat_func_t	`xlat_func)`;

Arguments

ap: ATA port to which the command is addressed
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_set lock)

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