LXR linux/drivers/ide/ide-cd.h

   1/*
   2 *  Copyright (C) 1996-98  Erik Andersen
   3 *  Copyright (C) 1998-2000 Jens Axboe
   4 */
   5#ifndef _IDE_CD_H
   6#define _IDE_CD_H
   7
   8#include <linux/cdrom.h>
   9#include <asm/byteorder.h>
  10
  11#define IDECD_DEBUG_LOG         0
  12
  13#if IDECD_DEBUG_LOG
  14#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)
  15#else
  16#define ide_debug_log(lvl, fmt, args...) do {} while (0)
  17#endif
  18
  19#define ATAPI_WAIT_WRITE_BUSY   (10 * HZ)
  20
  21/************************************************************************/
  22
  23#define SECTOR_BITS             9
  24#ifndef SECTOR_SIZE
  25#define SECTOR_SIZE             (1 << SECTOR_BITS)
  26#endif
  27#define SECTORS_PER_FRAME       (CD_FRAMESIZE >> SECTOR_BITS)
  28#define SECTOR_BUFFER_SIZE      (CD_FRAMESIZE * 32)
  29
  30/* Capabilities Page size including 8 bytes of Mode Page Header */
  31#define ATAPI_CAPABILITIES_PAGE_SIZE            (8 + 20)
  32#define ATAPI_CAPABILITIES_PAGE_PAD_SIZE        4
  33
  34/* Structure of a MSF cdrom address. */
  35struct atapi_msf {
  36        u8 reserved;
  37        u8 minute;
  38        u8 second;
  39        u8 frame;
  40};
  41
  42/* Space to hold the disk TOC. */
  43#define MAX_TRACKS 99
  44struct atapi_toc_header {
  45        unsigned short toc_length;
  46        u8 first_track;
  47        u8 last_track;
  48};
  49
  50struct atapi_toc_entry {
  51        u8 reserved1;
  52#if defined(__BIG_ENDIAN_BITFIELD)
  53        u8 adr     : 4;
  54        u8 control : 4;
  55#elif defined(__LITTLE_ENDIAN_BITFIELD)
  56        u8 control : 4;
  57        u8 adr     : 4;
  58#else
  59#error "Please fix <asm/byteorder.h>"
  60#endif
  61        u8 track;
  62        u8 reserved2;
  63        union {
  64                unsigned lba;
  65                struct atapi_msf msf;
  66        } addr;
  67};
  68
  69struct atapi_toc {
  70        int    last_session_lba;
  71        int    xa_flag;
  72        unsigned long capacity;
  73        struct atapi_toc_header hdr;
  74        struct atapi_toc_entry  ent[MAX_TRACKS+1];
  75          /* One extra for the leadout. */
  76};
  77
  78/* Extra per-device info for cdrom drives. */
  79struct cdrom_info {
  80        ide_drive_t             *drive;
  81        struct ide_driver       *driver;
  82        struct gendisk          *disk;
  83        struct device           dev;
  84
  85        /* Buffer for table of contents.  NULL if we haven't allocated
  86           a TOC buffer for this device yet. */
  87
  88        struct atapi_toc *toc;
  89
  90        u8 max_speed;           /* Max speed of the drive. */
  91        u8 current_speed;       /* Current speed of the drive. */
  92
  93        /* Per-device info needed by cdrom.c generic driver. */
  94        struct cdrom_device_info devinfo;
  95
  96        unsigned long write_timeout;
  97};
  98
  99/* ide-cd_verbose.c */
 100void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 101
 102/* ide-cd.c functions used by ide-cd_ioctl.c */
 103int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 104                    unsigned *, struct request_sense *, int, unsigned int);
 105int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 106int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 107void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 108int cdrom_check_status(ide_drive_t *, struct request_sense *);
 109
 110/* ide-cd_ioctl.c */
 111int ide_cdrom_open_real(struct cdrom_device_info *, int);
 112void ide_cdrom_release_real(struct cdrom_device_info *);
 113int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 114unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
 115                                         unsigned int clearing, int slot_nr);
 116int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 117int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 118int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 119int ide_cdrom_get_last_session(struct cdrom_device_info *,
 120                               struct cdrom_multisession *);
 121int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 122int ide_cdrom_reset(struct cdrom_device_info *cdi);
 123int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 124int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 125
 126#endif /* _IDE_CD_H */
 127