mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
320 lines
8.9 KiB
320 lines
8.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* -- <linux/cdrom.h> |
|
* General header file for linux CD-ROM drivers |
|
* Copyright (C) 1992 David Giller, [email protected] |
|
* 1994, 1995 Eberhard Mönkeberg, [email protected] |
|
* 1996 David van Leeuwen, [email protected] |
|
* 1997, 1998 Erik Andersen, [email protected] |
|
* 1998-2002 Jens Axboe, [email protected] |
|
*/ |
|
#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 *); |
|
|
|
/* 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 *); |
|
}; |
|
|
|
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 */
|
|
|