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