ATA_HOST_ALLOC_PINFO(9) libata Library ATA_HOST_ALLOC_PINFO(9)NAME
ata_host_alloc_pinfo - alloc host and init with port_info array
SYNOPSIS
struct ata_host * ata_host_alloc_pinfo(struct device * dev, const struct ata_port_info *const * ppi, int n_ports);
ARGUMENTS
dev
generic device this host is associated with
ppi
array of ATA port_info to initialize host with
n_ports
number of ATA ports attached to this host
DESCRIPTION
Allocate ATA host and initialize with info from ppi. If NULL terminated, ppi may contain fewer entries than n_ports. The last entry will be
used for the remaining ports.
RETURNS
Allocate ATA host on success, NULL on failure.
LOCKING
Inherited from calling layer (may sleep).
AUTHOR
Jeff Garzik
Author.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 ATA_HOST_ALLOC_PINFO(9)
Check Out this Related Man Page
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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