ICH_SET_DMAMODE(9) ata_piix Internals ICH_SET_DMAMODE(9)NAME
ich_set_dmamode - Initialize host controller PATA DMA timings
SYNOPSIS
void ich_set_dmamode(struct ata_port * ap, struct ata_device * adev);
ARGUMENTS
ap
Port whose timings we are configuring
adev
um
DESCRIPTION
Set MW/UDMA mode for device, in host controller PCI config space.
LOCKING
None (inherited from caller).
AUTHOR
Jeff Garzik
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 ICH_SET_DMAMODE(9)
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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. July 2010 ATA_SCSI_TRANSLATE(9)
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