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 /*
  20  * typical timeout for packet command
  21  */
  22 #define ATAPI_WAIT_PC           (60 * HZ)
  23 #define ATAPI_WAIT_WRITE_BUSY   (10 * HZ)
  24
  25 /************************************************************************/
  26
  27 #define SECTOR_BITS             9
  28 #ifndef SECTOR_SIZE
  29 #define SECTOR_SIZE             (1 << SECTOR_BITS)
  30 #endif
  31 #define SECTORS_PER_FRAME       (CD_FRAMESIZE >> SECTOR_BITS)
  32 #define SECTOR_BUFFER_SIZE      (CD_FRAMESIZE * 32)
  33
  34 /* Capabilities Page size including 8 bytes of Mode Page Header */
  35 #define ATAPI_CAPABILITIES_PAGE_SIZE            (8 + 20)
  36 #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE        4
  37
  38 /* Structure of a MSF cdrom address. */
  39 struct atapi_msf {
  40         byte reserved;
  41         byte minute;
  42         byte second;
  43         byte frame;
  44 };
  45
  46 /* Space to hold the disk TOC. */
  47 #define MAX_TRACKS 99
  48 struct atapi_toc_header {
  49         unsigned short toc_length;
  50         byte first_track;
  51         byte last_track;
  52 };
  53
  54 struct atapi_toc_entry {
  55         byte reserved1;
  56 #if defined(__BIG_ENDIAN_BITFIELD)
  57         __u8 adr     : 4;
  58         __u8 control : 4;
  59 #elif defined(__LITTLE_ENDIAN_BITFIELD)
  60         __u8 control : 4;
  61         __u8 adr     : 4;
  62 #else
  63 #error "Please fix <asm/byteorder.h>"
  64 #endif
  65         byte track;
  66         byte reserved2;
  67         union {
  68                 unsigned lba;
  69                 struct atapi_msf msf;
  70         } addr;
  71 };
  72
  73 struct atapi_toc {
  74         int    last_session_lba;
  75         int    xa_flag;
  76         unsigned long capacity;
  77         struct atapi_toc_header hdr;
  78         struct atapi_toc_entry  ent[MAX_TRACKS+1];
  79           /* One extra for the leadout. */
  80 };
  81
  82 /* Extra per-device info for cdrom drives. */
  83 struct cdrom_info {
  84         ide_drive_t     *drive;
  85         ide_driver_t    *driver;
  86         struct gendisk  *disk;
  87         struct kref     kref;
  88
  89         /* Buffer for table of contents.  NULL if we haven't allocated
  90            a TOC buffer for this device yet. */
  91
  92         struct atapi_toc *toc;
  93
  94         /* The result of the last successful request sense command
  95            on this device. */
  96         struct request_sense sense_data;
  97
  98         struct request request_sense_request;
  99
 100         u8 max_speed;           /* Max speed of the drive. */
 101         u8 current_speed;       /* Current speed of the drive. */
 102
 103         /* Per-device info needed by cdrom.c generic driver. */
 104         struct cdrom_device_info devinfo;
 105
 106         unsigned long write_timeout;
 107 };
 108
 109 /* ide-cd_verbose.c */
 110 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 111
 112 /* ide-cd.c functions used by ide-cd_ioctl.c */
 113 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 114                     unsigned *, struct request_sense *, int, unsigned int);
 115 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 116 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 117 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 118 int cdrom_check_status(ide_drive_t *, struct request_sense *);
 119
 120 /* ide-cd_ioctl.c */
 121 int ide_cdrom_open_real(struct cdrom_device_info *, int);
 122 void ide_cdrom_release_real(struct cdrom_device_info *);
 123 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 124 int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
 125 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 126 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 127 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 128 int ide_cdrom_get_last_session(struct cdrom_device_info *,
 129                                struct cdrom_multisession *);
 130 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 131 int ide_cdrom_reset(struct cdrom_device_info *cdi);
 132 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 133 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 134
 135 #endif /* _IDE_CD_H */