ata_timing_cycle2mode (9)

u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);

xfer_shift

ATA_SHIFT_* value for transfer type to examine.

cycle

cycle duration in ns

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.

None.

Matching xfer_mode, 0xff if no match found.

Jeff Garzik

Author.