| /* 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 <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 for_data; | |
| int (*exit)(struct cdrom_device_info *); | |
| int mrw_mode_page; | |
| }; | |
| 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 (*media_changed) (struct cdrom_device_info *, int); | |
| int (*tray_move) (struct cdrom_device_info *, int); | |
| int (*lock_door) (struct cdrom_device_info *, int); | |
| int (*select_speed) (struct cdrom_device_info *, int); | |
| int (*select_disc) (struct cdrom_device_info *, int); | |
| 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 *); | |
| /* driver specifications */ | |
| const int capability; /* capability flags */ | |
| /* handle uniform packets for scsi type devices (scsi,atapi) */ | |
| int (*generic_packet) (struct cdrom_device_info *, | |
| struct packet_command *); | |
| }; | |
| /* the general block_device operations structure: */ | |
| extern int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, | |
| fmode_t mode); | |
| extern void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode); | |
| extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, | |
| fmode_t mode, unsigned int cmd, unsigned long arg); | |
| extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi, | |
| unsigned int clearing); | |
| extern int cdrom_media_changed(struct cdrom_device_info *); | |
| extern int register_cdrom(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 */ |