Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug

NAME
       do_drive_get_GTF - get the drive bootup default taskfile settings


SYNOPSIS
       int do_drive_get_GTF  (struct ata_port * ap, int ix,
                               unsigned int * gtf_length,
                               unsigned long * gtf_address,
                               unsigned long * obj_loc);


ARGUMENTS
       ap     the ata_port for the drive

       ix     target ata_device (drive) index

       gtf_length
              number of bytes of _GTF data returned at gtf_address

       gtf_address
              buffer containing _GTF taskfile arrays

       obj_loc
              -- undescribed --


DESCRIPTION
       This applies to both PATA and SATA drives.

       The _GTF method has no input parameters. It returns a  variable  number
       of  register  set  values  (registers  hex  1F1..1F7,  taskfiles).  The
       <variable number> is not known in advance, so have ACPI-CA allocate the
       buffer as needed and return it, then free it later.

       The  returned gtf_length and gtf_address are only valid if the function
       return value is 0.


AUTHOR
       Jeff Garzik.