drivers/ide/ide-cd.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  Copyright (C) 1996-98  Erik Andersen
   4  *  Copyright (C) 1998-2000 Jens Axboe
   5  */
   6 #ifndef _IDE_CD_H
   7 #define _IDE_CD_H
   8
   9 #include <linux/cdrom.h>
  10 #include <asm/byteorder.h>
  11
  12 #define IDECD_DEBUG_LOG         0
  13
  14 #if IDECD_DEBUG_LOG
  15 #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)
  16 #else
  17 #define ide_debug_log(lvl, fmt, args...) do {} while (0)
  18 #endif
  19
  20 #define ATAPI_WAIT_WRITE_BUSY   (10 * HZ)
  21
  22 /************************************************************************/
  23
  24 #define SECTOR_BITS             9
  25 #ifndef SECTOR_SIZE
  26 #define SECTOR_SIZE             (1 << SECTOR_BITS)
  27 #endif
  28 #define SECTORS_PER_FRAME       (CD_FRAMESIZE >> SECTOR_BITS)
  29 #define SECTOR_BUFFER_SIZE      (CD_FRAMESIZE * 32)
  30
  31 /* Capabilities Page size including 8 bytes of Mode Page Header */
  32 #define ATAPI_CAPABILITIES_PAGE_SIZE            (8 + 20)
  33 #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE        4
  34
  35 /* Structure of a MSF cdrom address. */
  36 struct atapi_msf {
  37         u8 reserved;
  38         u8 minute;
  39         u8 second;
  40         u8 frame;
  41 };
  42
  43 /* Space to hold the disk TOC. */
  44 #define MAX_TRACKS 99
  45 struct atapi_toc_header {
  46         unsigned short toc_length;
  47         u8 first_track;
  48         u8 last_track;
  49 };
  50
  51 struct atapi_toc_entry {
  52         u8 reserved1;
  53 #if defined(__BIG_ENDIAN_BITFIELD)
  54         u8 adr     : 4;
  55         u8 control : 4;
  56 #elif defined(__LITTLE_ENDIAN_BITFIELD)
  57         u8 control : 4;
  58         u8 adr     : 4;
  59 #else
  60 #error "Please fix <asm/byteorder.h>"
  61 #endif
  62         u8 track;
  63         u8 reserved2;
  64         union {
  65                 unsigned lba;
  66                 struct atapi_msf msf;
  67         } addr;
  68 };
  69
  70 struct atapi_toc {
  71         int    last_session_lba;
  72         int    xa_flag;
  73         unsigned long capacity;
  74         struct atapi_toc_header hdr;
  75         struct atapi_toc_entry  ent[MAX_TRACKS+1];
  76           /* One extra for the leadout. */
  77 };
  78
  79 /* Extra per-device info for cdrom drives. */
  80 struct cdrom_info {
  81         ide_drive_t             *drive;
  82         struct ide_driver       *driver;
  83         struct gendisk          *disk;
  84         struct device           dev;
  85
  86         /* Buffer for table of contents.  NULL if we haven't allocated
  87            a TOC buffer for this device yet. */
  88
  89         struct atapi_toc *toc;
  90
  91         u8 max_speed;           /* Max speed of the drive. */
  92         u8 current_speed;       /* Current speed of the drive. */
  93
  94         /* Per-device info needed by cdrom.c generic driver. */
  95         struct cdrom_device_info devinfo;
  96
  97         unsigned long write_timeout;
  98 };
  99
 100 /* ide-cd_verbose.c */
 101 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 102
 103 /* ide-cd.c functions used by ide-cd_ioctl.c */
 104 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 105                     unsigned *, struct request_sense *, int, req_flags_t);
 106 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 107 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 108 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 109 int cdrom_check_status(ide_drive_t *, struct request_sense *);
 110
 111 /* ide-cd_ioctl.c */
 112 int ide_cdrom_open_real(struct cdrom_device_info *, int);
 113 void ide_cdrom_release_real(struct cdrom_device_info *);
 114 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 115 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
 116                                          unsigned int clearing, int slot_nr);
 117 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 118 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 119 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 120 int ide_cdrom_get_last_session(struct cdrom_device_info *,
 121                                struct cdrom_multisession *);
 122 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 123 int ide_cdrom_reset(struct cdrom_device_info *cdi);
 124 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 125 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 126
 127 #endif /* _IDE_CD_H */