ATA_EXEC_INTERNAL_SG(9)               libata Core Internals               ATA_EXEC_INTERNAL_SG(9)



NAME
       ata_exec_internal_sg - execute libata internal command

SYNOPSIS
       unsigned ata_exec_internal_sg(struct ata_device * dev, struct ata_taskfile * tf,
                                     const u8 * cdb, int dma_dir, struct scatterlist * sgl,
                                     unsigned int n_elem, unsigned long timeout);

ARGUMENTS
       dev
           Device to which the command is sent

       tf
           Taskfile registers for the command and the result

       cdb
           CDB for packet command

       dma_dir
           Data transfer direction of the command

       sgl
           sg list for the data buffer of the command

       n_elem
           Number of sg entries

       timeout
           Timeout in msecs (0 for default)

DESCRIPTION
       Executes libata internal command with timeout.  tf contains command on entry and result on
       return. Timeout and error conditions are reported via return value. No recovery action is
       taken after a command times out. It's caller's duty to clean up after timeout.

       LOCKING: None. Should be called with kernel context, might sleep.

RETURN
       Zero on success, AC_ERR_* mask on failure

AUTHOR
       Jeff Garzik
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   ATA_EXEC_INTERNAL_SG(9)