0 ˆÌË ƒ|,‹ÇÀÈ#¬/* SPDX-License-Identifier: GPL-2.0 */ /* * -- * 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 /* not really needed, later.. */ #include #include #include #include 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 (*exit)(struct cdrom_device_info *); 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 c