root/drivers/ide/ide-cd.h

INCLUDED FROM

   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. */
  32 struct 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
  41 struct atapi_toc_header {
  42         unsigned short toc_length;
  43         u8 first_track;
  44         u8 last_track;
  45 };
  46 
  47 struct 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 
  66 struct 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. */
  76 struct 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 */
  97 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
  98 
  99 /* ide-cd.c functions used by ide-cd_ioctl.c */
 100 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
 101                     unsigned *, struct scsi_sense_hdr *, int, req_flags_t);
 102 int ide_cd_read_toc(ide_drive_t *);
 103 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 104 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
 105 int cdrom_check_status(ide_drive_t *, struct scsi_sense_hdr *);
 106 
 107 /* ide-cd_ioctl.c */
 108 int ide_cdrom_open_real(struct cdrom_device_info *, int);
 109 void ide_cdrom_release_real(struct cdrom_device_info *);
 110 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
 111 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
 112                                          unsigned int clearing, int slot_nr);
 113 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
 114 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
 115 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
 116 int ide_cdrom_get_last_session(struct cdrom_device_info *,
 117                                struct cdrom_multisession *);
 118 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
 119 int ide_cdrom_reset(struct cdrom_device_info *cdi);
 120 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 121 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
 122 
 123 #endif /* _IDE_CD_H */