| /* 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 (*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 *); |
| |
| /* 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: */ |
| 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 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 */ |
