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