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 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)
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.
RETURNS
Zero on success, AC_ERR_* mask on failure
AUTHOR
Jeff Garzik
Author.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 ATA_EXEC_INTERNAL_SG(9)
