drivers/ide/ide-cd.h

   1 /*
   2  *  linux/drivers/ide/ide_cd.h
   3  *
   4  *  Copyright (C) 1996-98  Erik Andersen
   5  *  Copyright (C) 1998-2000 Jens Axboe
   6  */
   7 #ifndef _IDE_CD_H
   8 #define _IDE_CD_H
   9
  10 #include <linux/cdrom.h>
  11 #include <asm/byteorder.h>
  12
  13 /*
  14  * typical timeout for packet command
  15  */
  16 #define ATAPI_WAIT_PC           (60 * HZ)
  17 #define ATAPI_WAIT_WRITE_BUSY   (10 * HZ)
  18
  19 /************************************************************************/
  20
  21 #define SECTOR_BITS             9
  22 #ifndef SECTOR_SIZE
  23 #define SECTOR_SIZE             (1 << SECTOR_BITS)
  24 #endif
  25 #define SECTORS_PER_FRAME       (CD_FRAMESIZE >> SECTOR_BITS)
  26 #define SECTOR_BUFFER_SIZE      (CD_FRAMESIZE * 32)
  27
  28 /* Capabilities Page size including 8 bytes of Mode Page Header */
  29 #define ATAPI_CAPABILITIES_PAGE_SIZE            (8 + 20)
  30 #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE        4
  31
  32 enum {
  33         /* Device sends an interrupt when ready for a packet command. */
  34         IDE_CD_FLAG_DRQ_INTERRUPT       = (1 << 0),
  35         /* Drive cannot lock the door. */
  36         IDE_CD_FLAG_NO_DOORLOCK         = (1 << 1),
  37         /* Drive cannot eject the disc. */
  38         IDE_CD_FLAG_NO_EJECT            = (1 << 2),
  39         /* Drive is a pre ATAPI 1.2 drive. */
  40         IDE_CD_FLAG_PRE_ATAPI12         = (1 << 3),
  41         /* TOC addresses are in BCD. */
  42         IDE_CD_FLAG_TOCADDR_AS_BCD      = (1 << 4),
  43         /* TOC track numbers are in BCD. */
  44         IDE_CD_FLAG_TOCTRACKS_AS_BCD    = (1 << 5),
  45         /*
  46          * Drive does not provide data in multiples of SECTOR_SIZE
  47          * when more than one interrupt is needed.
  48          */
  49         IDE_CD_FLAG_LIMIT_NFRAMES       = (1 << 6),
  50         /* Seeking in progress. */
  51         IDE_CD_FLAG_SEEKING             = (1 << 7),
  52         /* Driver has noticed a media change. */
  53         IDE_CD_FLAG_MEDIA_CHANGED       = (1 << 8),
  54         /* Saved TOC information is current. */
  55         IDE_CD_FLAG_TOC_VALID           = (1 << 9),
  56         /* We think that the drive door is locked. */
  57         IDE_CD_FLAG_DOOR_LOCKED         = (1 << 10),
  58         /* SET_CD_SPEED command is unsupported. */
  59         IDE_CD_FLAG_NO_SPEED_SELECT     = (1 << 11),
  60         IDE_CD_FLAG_VERTOS_300_SSD      = (1 << 12),
  61         IDE_CD_FLAG_VERTOS_600_ESD      = (1 << 13),
  62         IDE_CD_FLAG_SANYO_3CD           = (1 << 14),
  63         IDE_CD_FLAG_FULL_CAPS_PAGE      = (1 << 15),
  64         IDE_CD_FLAG_PLAY_AUDIO_OK       = (1 << 16),
  65         IDE_CD_FLAG_LE_SPEED_FIELDS     = (1 << 17),
  66 };
  67
  68 /* Structure of a MSF cdrom address. */
  69 struct atapi_msf {
  70         byte reserved;
  71         byte minute;
  72         byte second;
  73         byte frame;
  74 };
  75
  76 /* Space to hold the disk TOC. */
  77 #define MAX_TRACKS 99
  78 struct atapi_toc_header {
  79         unsigned short toc_length;
  80         byte first_track;
  81         byte last_track;
  82 };
  83
  84 struct atapi_toc_entry {
  85         byte reserved1;
  86 #if defined(__BIG_ENDIAN_BITFIELD)
  87         __u8 adr     : 4;
  88         __u8 control : 4;
  89 #elif defined(__LITTLE_ENDIAN_BITFIELD)
  90         __u8 control : 4;
  91         __u8 adr     : 4;
  92 #else
  93 #error "Please fix <asm/byteorder.h>"
  94 #endif
  95         byte track;
  96         byte reserved2;
  97         union {
  98                 unsigned lba;
  99                 struct atapi_msf msf;
 100         } addr;
 101 };
 102
 103 struct atapi_toc {
 104         int    last_session_lba;
 105         int    xa_flag;
 106         unsigned long capacity;
 107         struct atapi_toc_header hdr;
 108         struct atapi_toc_entry  ent[MAX_TRACKS+1];
 109           /* One extra for the leadout. */
 110 };
 111
 112 /* Extra per-device info for cdrom drives. */
 113 struct cdrom_info {
 114         ide_drive_t     *drive;
 115         ide_driver_t    *driver;
 116         struct gendisk  *disk;
 117         struct kref     kref;
 118
 119         /* Buffer for table of contents.  NULL if we haven't allocated
 120            a TOC buffer for this device yet. */
 121
 122         struct atapi_toc *toc;
 123
 124         unsigned long   sector_buffered;
 125         unsigned long   nsectors_buffered;
 126         unsigned char   *buffer;
 127
 128         /* The result of the last successful request sense command
 129            on this device. */
 130         struct request_sense sense_data;
 131
 132         struct request request_sense_request;
 133         int dma;
 134         unsigned long last_block;
 135         unsigned long start_seek;
 136
 137         unsigned int cd_flags;
 138
 139         u8 max_speed;           /* Max speed of the drive. */
 140         u8 current_speed;       /* Current speed of the drive. */
 141
 142         /* Per-device info needed by cdrom.c generic driver. */
 143         struct cdrom_device_info devinfo;
 144
 145         unsigned long write_timeout;
 146 };
 147
 148 /* ide-cd_verbose.c */
 149 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 150
 151 /* ide-cd.c functions used by ide-cd_ioctl.c */
 152 void ide_cd_init_rq(ide_drive_t *, struct request *);
 153 int ide_cd_queue_pc(ide_drive_t *, struct request *);
 154 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 155 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 156 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 157 int cdrom_check_status(ide_drive_t *, struct request_sense *);
 158
 159 /* ide-cd_ioctl.c */
 160 int ide_cdrom_open_real(struct cdrom_device_info *, int);
 161 void ide_cdrom_release_real(struct cdrom_device_info *);
 162 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 163 int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
 164 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 165 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 166 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 167 int ide_cdrom_get_last_session(struct cdrom_device_info *,
 168                                struct cdrom_multisession *);
 169 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 170 int ide_cdrom_reset(struct cdrom_device_info *cdi);
 171 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 172 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 173
 174 #endif /* _IDE_CD_H */