LXR linux/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. */
  36struct 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
  45struct atapi_toc_header {
  46        unsigned short toc_length;
  47        u8 first_track;
  48        u8 last_track;
  49};
  50
  51struct 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
  70struct 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. */
  80struct 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 */
 101void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 102
 103/* ide-cd.c functions used by ide-cd_ioctl.c */
 104int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 105                    unsigned *, struct request_sense *, int, req_flags_t);
 106int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 107int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 108void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 109int cdrom_check_status(ide_drive_t *, struct request_sense *);
 110
 111/* ide-cd_ioctl.c */
 112int ide_cdrom_open_real(struct cdrom_device_info *, int);
 113void ide_cdrom_release_real(struct cdrom_device_info *);
 114int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 115unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
 116                                         unsigned int clearing, int slot_nr);
 117int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 118int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 119int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 120int ide_cdrom_get_last_session(struct cdrom_device_info *,
 121                               struct cdrom_multisession *);
 122int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 123int ide_cdrom_reset(struct cdrom_device_info *cdi);
 124int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 125int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 126
 127#endif /* _IDE_CD_H */
 128