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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323/* SPDX-License-Identifier: GPL-2.0 *//* * -- <linux/cdrom.h> * General header file for linux CD-ROM drivers * Copyright (C) 1992 David Giller, rafetmad@oxy.edu * 1994, 1995 Eberhard Mönkeberg, emoenke@gwdg.de * 1996 David van Leeuwen, david@tm.tno.nl * 1997, 1998 Erik Andersen, andersee@debian.org * 1998-2002 Jens Axboe, axboe@suse.de */#ifndef _LINUX_CDROM_H#define _LINUX_CDROM_H
#include <linux/fs.h> /* not really needed, later.. */#include <linux/list.h>#include <linux/blkdev.h>#include <scsi/scsi_common.h>#include <uapi/linux/cdrom.h>
struct packet_command{ unsigned char cmd[CDROM_PACKET_SIZE]; unsigned char *buffer; unsigned int buflen; int stat; struct scsi_sense_hdr *sshdr; unsigned char data_direction; int quiet; int timeout; void *reserved[1];};
/* * _OLD will use PIO transfer on atapi devices, _BPC_* will use DMA */#define CDDA_OLD 0 /* old style */#define CDDA_BPC_SINGLE 1 /* single frame block pc */#define CDDA_BPC_FULL 2 /* multi frame block pc */
/* Uniform cdrom data structures for cdrom.c */struct cdrom_device_info { const struct cdrom_device_ops *ops; /* link to device_ops */ struct list_head list; /* linked list of all device_info */ struct gendisk *disk; /* matching block layer disk */ void *handle; /* driver-dependent data *//* specifications */ int mask; /* mask of capability: disables them */ int speed; /* maximum speed for reading data */ int capacity; /* number of discs in jukebox *//* device-related storage */ unsigned int options : 30; /* options flags */ unsigned mc_flags : 2; /* media change buffer flags */ unsigned int vfs_events; /* cached events for vfs path */ unsigned int ioctl_events; /* cached events for ioctl path */ int use_count; /* number of times device opened */ char name[20]; /* name of the device type *//* per-device flags */ __u8 sanyo_slot : 2; /* Sanyo 3 CD changer support */ __u8 keeplocked : 1; /* CDROM_LOCKDOOR status */ __u8 reserved : 5; /* not used yet */ int cdda_method; /* see flags */ __u8 last_sense; __u8 media_written; /* dirty flag, DVD+RW bookkeeping */ unsigned short mmc3_profile; /* current MMC3 profile */ int mrw_mode_page; bool opened_for_data; __s64 last_media_change_ms;};
struct cdrom_device_ops {/* routines */ int (*open) (struct cdrom_device_info *, int); void (*release) (struct cdrom_device_info *); int (*drive_status) (struct cdrom_device_info *, int); unsigned int (*check_events) (struct cdrom_device_info *cdi, unsigned int clearing, int slot); int (*tray_move) (struct cdrom_device_info *, int); int (*lock_door) (struct cdrom_device_info *, int); int (*select_speed) (struct cdrom_device_info *, unsigned long); int (*get_last_session) (struct cdrom_device_info *, struct cdrom_multisession *); int (*get_mcn) (struct cdrom_device_info *, struct cdrom_mcn *); /* hard reset device */ int (*reset) (struct cdrom_device_info *); /* play stuff */ int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *);
/* handle uniform packets for scsi type devices (scsi,atapi) */ int (*generic_packet) (struct cdrom_device_info *, struct packet_command *); int (*read_cdda_bpc)(struct cdrom_device_info *cdi, void __user *ubuf, u32 lba, u32 nframes, u8 *last_sense);/* driver specifications */ const int capability; /* capability flags */};
int cdrom_multisession(struct cdrom_device_info *cdi, struct cdrom_multisession *info);int cdrom_read_tocentry(struct cdrom_device_info *cdi, struct cdrom_tocentry *entry);
/* the general block_device operations structure: */int cdrom_open(struct cdrom_device_info *cdi, blk_mode_t mode);void cdrom_release(struct cdrom_device_info *cdi);int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, unsigned int cmd, unsigned long arg);extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi, unsigned int clearing);
extern void cdrom_probe_write_features(struct cdrom_device_info *cdi);extern int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi);extern void unregister_cdrom(struct cdrom_device_info *cdi);
typedef struct { int data; int audio; int cdi; int xa; long error;} tracktype;
extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);extern int cdrom_number_of_slots(struct cdrom_device_info *cdi);extern int cdrom_mode_select(struct cdrom_device_info *cdi, struct packet_command *cgc);extern int cdrom_mode_sense(struct cdrom_device_info *cdi, struct packet_command *cgc, int page_code, int page_control);extern void init_cdrom_command(struct packet_command *cgc, void *buffer, int len, int type);extern int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, struct packet_command *cgc);
/* The SCSI spec says there could be 256 slots. */#define CDROM_MAX_SLOTS 256
struct cdrom_mechstat_header {#if defined(__BIG_ENDIAN_BITFIELD) __u8 fault : 1; __u8 changer_state : 2; __u8 curslot : 5; __u8 mech_state : 3; __u8 door_open : 1; __u8 reserved1 : 4;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 curslot : 5; __u8 changer_state : 2; __u8 fault : 1; __u8 reserved1 : 4; __u8 door_open : 1; __u8 mech_state : 3;#endif __u8 curlba[3]; __u8 nslots; __u16 slot_tablelen;};
struct cdrom_slot {#if defined(__BIG_ENDIAN_BITFIELD) __u8 disc_present : 1; __u8 reserved1 : 6; __u8 change : 1;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 change : 1; __u8 reserved1 : 6; __u8 disc_present : 1;#endif __u8 reserved2[3];};
struct cdrom_changer_info { struct cdrom_mechstat_header hdr; struct cdrom_slot slots[CDROM_MAX_SLOTS];};
typedef enum { mechtype_caddy = 0, mechtype_tray = 1, mechtype_popup = 2, mechtype_individual_changer = 4, mechtype_cartridge_changer = 5} mechtype_t;
typedef struct {#if defined(__BIG_ENDIAN_BITFIELD) __u8 ps : 1; __u8 reserved1 : 1; __u8 page_code : 6; __u8 page_length; __u8 reserved2 : 1; __u8 bufe : 1; __u8 ls_v : 1; __u8 test_write : 1; __u8 write_type : 4; __u8 multi_session : 2; /* or border, DVD */ __u8 fp : 1; __u8 copy : 1; __u8 track_mode : 4; __u8 reserved3 : 4; __u8 data_block_type : 4;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 page_code : 6; __u8 reserved1 : 1; __u8 ps : 1; __u8 page_length; __u8 write_type : 4; __u8 test_write : 1; __u8 ls_v : 1; __u8 bufe : 1; __u8 reserved2 : 1; __u8 track_mode : 4; __u8 copy : 1; __u8 fp : 1; __u8 multi_session : 2; /* or border, DVD */ __u8 data_block_type : 4; __u8 reserved3 : 4;#endif __u8 link_size; __u8 reserved4;#if defined(__BIG_ENDIAN_BITFIELD) __u8 reserved5 : 2; __u8 app_code : 6;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 app_code : 6; __u8 reserved5 : 2;#endif __u8 session_format; __u8 reserved6; __be32 packet_size; __u16 audio_pause; __u8 mcn[16]; __u8 isrc[16]; __u8 subhdr0; __u8 subhdr1; __u8 subhdr2; __u8 subhdr3;} __attribute__((packed)) write_param_page;
struct modesel_head{ __u8 reserved1; __u8 medium; __u8 reserved2; __u8 block_desc_length; __u8 density; __u8 number_of_blocks_hi; __u8 number_of_blocks_med; __u8 number_of_blocks_lo; __u8 reserved3; __u8 block_length_hi; __u8 block_length_med; __u8 block_length_lo;};
typedef struct { __u16 report_key_length; __u8 reserved1; __u8 reserved2;#if defined(__BIG_ENDIAN_BITFIELD) __u8 type_code : 2; __u8 vra : 3; __u8 ucca : 3;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 ucca : 3; __u8 vra : 3; __u8 type_code : 2;#endif __u8 region_mask; __u8 rpc_scheme; __u8 reserved3;} rpc_state_t;
struct event_header { __be16 data_len;#if defined(__BIG_ENDIAN_BITFIELD) __u8 nea : 1; __u8 reserved1 : 4; __u8 notification_class : 3;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 notification_class : 3; __u8 reserved1 : 4; __u8 nea : 1;#endif __u8 supp_event_class;};
struct media_event_desc {#if defined(__BIG_ENDIAN_BITFIELD) __u8 reserved1 : 4; __u8 media_event_code : 4; __u8 reserved2 : 6; __u8 media_present : 1; __u8 door_open : 1;#elif defined(__LITTLE_ENDIAN_BITFIELD) __u8 media_event_code : 4; __u8 reserved1 : 4; __u8 door_open : 1; __u8 media_present : 1; __u8 reserved2 : 6;#endif __u8 start_slot; __u8 end_slot;};
extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med);
static inline void lba_to_msf(int lba, u8 *m, u8 *s, u8 *f){ lba += CD_MSF_OFFSET; lba &= 0xffffff; /* negative lbas use only 24 bits */ *m = lba / (CD_SECS * CD_FRAMES); lba %= (CD_SECS * CD_FRAMES); *s = lba / CD_FRAMES; *f = lba % CD_FRAMES;}
static inline int msf_to_lba(u8 m, u8 s, u8 f){ return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;}#endif /* _LINUX_CDROM_H */