extern u8 ata_altstatus(struct ata_port *ap);
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
extern int ata_port_start (struct ata_port *ap);
+extern int ata_sff_port_start (struct ata_port *ap);
extern irqreturn_t ata_interrupt (int irq, void *dev_instance);
extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);