NAME
ata_pio_data_xfer - Transfer data by PIO
SYNOPSIS
void ata_pio_data_xfer (struct ata_port * ap, unsigned char * buf,
unsigned int buflen, int write_data);
ARGUMENTS
ap port to read/write
buf data buffer
buflen buffer length
write_data
read/write
DESCRIPTION
Transfer data from/to the device data register by PIO.
LOCKING
Inherited from caller.
AUTHOR
Jeff Garzik.