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