Man page 9 : ata_exec_internal_sg

ata_exec_internal_sg - execute libata internal command

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 );

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 tranfer 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)

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. ItAqs callerAqs duty to clean up after timeout.

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

Zero on success, AC_ERR_* mask on failure

Jeff Garzik
    Author.