ata_timing_cycle2mod(9)
NAME
ata_timing_cycle2mode - find xfer mode for the specified cycle duration
SYNOPSIS
u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
ARGUMENTS
- xfer_shift
- ATA_SHIFT_* value for transfer type to examine.
- cycle
- cycle duration in ns
DESCRIPTION
Return matching xfer mode for cycle. The returned mode is of the
transfer type specified by xfer_shift. If cycle is too slow for
xfer_shift, 0xff is returned. If cycle is faster than the fastest known
mode, the fasted mode is returned.
LOCKING
None.
RETURNS
Matching xfer_mode, 0xff if no match found.
AUTHOR
- Jeff Garzik
- Author.