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. */
  35 struct 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
  44 struct atapi_toc_header {
  45         unsigned short toc_length;
  46         u8 first_track;
  47         u8 last_track;
  48 };
  49
  50 struct 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
  69 struct 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. */
  79 struct cdrom_info {
  80         ide_drive_t             *drive;
  81         struct ide_driver       *driver;
  82         struct gendisk          *disk;
  83         struct kref             kref;
  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         /* The result of the last successful request sense command
  91            on this device. */
  92         struct request_sense sense_data;
  93
  94         struct request request_sense_request;
  95
  96         u8 max_speed;           /* Max speed of the drive. */
  97         u8 current_speed;       /* Current speed of the drive. */
  98
  99         /* Per-device info needed by cdrom.c generic driver. */
 100         struct cdrom_device_info devinfo;
 101
 102         unsigned long write_timeout;
 103 };
 104
 105 /* ide-cd_verbose.c */
 106 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 107
 108 /* ide-cd.c functions used by ide-cd_ioctl.c */
 109 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 110                     unsigned *, struct request_sense *, int, unsigned int);
 111 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 112 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 113 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 114 int cdrom_check_status(ide_drive_t *, struct request_sense *);
 115
 116 /* ide-cd_ioctl.c */
 117 int ide_cdrom_open_real(struct cdrom_device_info *, int);
 118 void ide_cdrom_release_real(struct cdrom_device_info *);
 119 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 120 int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
 121 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 122 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 123 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 124 int ide_cdrom_get_last_session(struct cdrom_device_info *,
 125                                struct cdrom_multisession *);
 126 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 127 int ide_cdrom_reset(struct cdrom_device_info *cdi);
 128 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 129 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 130
 131 #endif /* _IDE_CD_H */