struct parport {


  /* An artibrary name for the port. */


  const char *name;


  /* The base address of the port, if that has any meaning, or zero. */


  unsigned long base_addr;


  /* The ECR address of the port, if that has any meaning, or zero. */


  unsigned long hibase_addr;


  /* The filename associated with this port,


   * if that has any meaning, or NULL. */


  const char *filename;
};