unsigned char ide_read_register(int dev, unsigned int port);
void ide_write_register(int dev, unsigned int port, unsigned char val);
void ide_read_data(int dev, ulong *sect_buf, int words);
unsigned char ide_read_register(int dev, unsigned int port);
void ide_write_register(int dev, unsigned int port, unsigned char val);
void ide_read_data(int dev, ulong *sect_buf, int words);