+extern unsigned ata_exec_internal(struct ata_device *dev,
+ struct ata_taskfile *tf, const u8 *cdb,
+ int dma_dir, void *buf, unsigned int buflen);
+extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
+extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
+ int post_reset, u16 *id);
+extern int ata_dev_configure(struct ata_device *dev, int print_info);
+extern int sata_down_spd_limit(struct ata_port *ap);
+extern int sata_set_spd_needed(struct ata_port *ap);
+extern int ata_down_xfermask_limit(struct ata_device *dev, int force_pio0);
+extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);