/*

   *  Copyright (C) 1996-98  Erik Andersen
   *  Copyright (C) 1998-2000 Jens Axboe
   */
  #ifndef _IDE_CD_H
  #define _IDE_CD_H
  
  #include <linux/cdrom.h>
  #include <asm/byteorder.h>

  #define IDECD_DEBUG_LOG		0
  
  #if IDECD_DEBUG_LOG

  #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)

  #else
  #define ide_debug_log(lvl, fmt, args...) do {} while (0)
  #endif

  #define ATAPI_WAIT_WRITE_BUSY	(10 * HZ)
  
  /************************************************************************/
  
  #define SECTOR_BITS 		9
  #ifndef SECTOR_SIZE
  #define SECTOR_SIZE		(1 << SECTOR_BITS)
  #endif
  #define SECTORS_PER_FRAME	(CD_FRAMESIZE >> SECTOR_BITS)
  #define SECTOR_BUFFER_SIZE	(CD_FRAMESIZE * 32)

  /* Capabilities Page size including 8 bytes of Mode Page Header */
  #define ATAPI_CAPABILITIES_PAGE_SIZE		(8 + 20)
  #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE	4

  /* Structure of a MSF cdrom address. */
  struct atapi_msf {

  	u8 reserved;
  	u8 minute;
  	u8 second;
  	u8 frame;

  };
  
  /* Space to hold the disk TOC. */
  #define MAX_TRACKS 99
  struct atapi_toc_header {
  	unsigned short toc_length;

  	u8 first_track;
  	u8 last_track;

  };
  
  struct atapi_toc_entry {

  	u8 reserved1;

  #if defined(__BIG_ENDIAN_BITFIELD)

  	u8 adr     : 4;
  	u8 control : 4;

  #elif defined(__LITTLE_ENDIAN_BITFIELD)

  	u8 control : 4;
  	u8 adr     : 4;

  #else
  #error "Please fix <asm/byteorder.h>"
  #endif

  	u8 track;
  	u8 reserved2;

  	union {
  		unsigned lba;
  		struct atapi_msf msf;
  	} addr;
  };
  
  struct atapi_toc {
  	int    last_session_lba;
  	int    xa_flag;
  	unsigned long capacity;
  	struct atapi_toc_header hdr;
  	struct atapi_toc_entry  ent[MAX_TRACKS+1];
  	  /* One extra for the leadout. */
  };

  /* Extra per-device info for cdrom drives. */
  struct cdrom_info {

  	ide_drive_t		*drive;
  	struct ide_driver	*driver;
  	struct gendisk		*disk;

  	struct device		dev;

  
  	/* Buffer for table of contents.  NULL if we haven't allocated
  	   a TOC buffer for this device yet. */
  
  	struct atapi_toc *toc;

  	u8 max_speed;		/* Max speed of the drive. */
  	u8 current_speed;	/* Current speed of the drive. */

  
          /* Per-device info needed by cdrom.c generic driver. */
          struct cdrom_device_info devinfo;
  
  	unsigned long write_timeout;
  };

  /* ide-cd_verbose.c */
  void ide_cd_log_error(const char *, struct request *, struct request_sense *);

  /* ide-cd.c functions used by ide-cd_ioctl.c */

  int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
  		    unsigned *, struct request_sense *, int, unsigned int);

  int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
  int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
  void ide_cdrom_update_speed(ide_drive_t *, u8 *);

  int cdrom_check_status(ide_drive_t *, struct request_sense *);

  
  /* ide-cd_ioctl.c */

  int ide_cdrom_open_real(struct cdrom_device_info *, int);
  void ide_cdrom_release_real(struct cdrom_device_info *);
  int ide_cdrom_drive_status(struct cdrom_device_info *, int);

  unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
  					 unsigned int clearing, int slot_nr);

  int ide_cdrom_tray_move(struct cdrom_device_info *, int);

  int ide_cdrom_lock_door(struct cdrom_device_info *, int);
  int ide_cdrom_select_speed(struct cdrom_device_info *, int);
  int ide_cdrom_get_last_session(struct cdrom_device_info *,
  			       struct cdrom_multisession *);
  int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
  int ide_cdrom_reset(struct cdrom_device_info *cdi);
  int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);

  int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);

  #endif /* _IDE_CD_H */