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ATA_TIMING_CYCLE2MOD(9) libata Library 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

unsigned int xfer_shift

ATA_SHIFT_* value for transfer type to examine.

int 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.

RETURN

Matching xfer_mode, 0xff if no match found.

AUTHOR

Jeff Garzik

Author.

COPYRIGHT

July 2017 Kernel Hackers Manual 4.12