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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/ide/ide-cd.h
15109 views
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/*

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 *  Copyright (C) 1996-98  Erik Andersen

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 *  Copyright (C) 1998-2000 Jens Axboe

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 */

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#ifndef _IDE_CD_H

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#define _IDE_CD_H

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#include <linux/cdrom.h>

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#include <asm/byteorder.h>

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#define IDECD_DEBUG_LOG		0

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#if IDECD_DEBUG_LOG

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#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)

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#else

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#define ide_debug_log(lvl, fmt, args...) do {} while (0)

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#endif

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#define ATAPI_WAIT_WRITE_BUSY	(10 * HZ)

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/************************************************************************/

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#define SECTOR_BITS 		9

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#ifndef SECTOR_SIZE

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#define SECTOR_SIZE		(1 << SECTOR_BITS)

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#endif

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#define SECTORS_PER_FRAME	(CD_FRAMESIZE >> SECTOR_BITS)

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#define SECTOR_BUFFER_SIZE	(CD_FRAMESIZE * 32)

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/* Capabilities Page size including 8 bytes of Mode Page Header */

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#define ATAPI_CAPABILITIES_PAGE_SIZE		(8 + 20)

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#define ATAPI_CAPABILITIES_PAGE_PAD_SIZE	4

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/* Structure of a MSF cdrom address. */

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struct atapi_msf {

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	u8 reserved;

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	u8 minute;

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	u8 second;

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	u8 frame;

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};

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/* Space to hold the disk TOC. */

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#define MAX_TRACKS 99

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struct atapi_toc_header {

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	unsigned short toc_length;

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	u8 first_track;

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	u8 last_track;

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};

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struct atapi_toc_entry {

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	u8 reserved1;

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#if defined(__BIG_ENDIAN_BITFIELD)

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	u8 adr     : 4;

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	u8 control : 4;

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#elif defined(__LITTLE_ENDIAN_BITFIELD)

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	u8 control : 4;

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	u8 adr     : 4;

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#else

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#error "Please fix <asm/byteorder.h>"

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#endif

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	u8 track;

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	u8 reserved2;

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	union {

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		unsigned lba;

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		struct atapi_msf msf;

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	} addr;

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};

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struct atapi_toc {

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	int    last_session_lba;

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	int    xa_flag;

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	unsigned long capacity;

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	struct atapi_toc_header hdr;

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	struct atapi_toc_entry  ent[MAX_TRACKS+1];

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	  /* One extra for the leadout. */

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};

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/* Extra per-device info for cdrom drives. */

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struct cdrom_info {

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	ide_drive_t		*drive;

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	struct ide_driver	*driver;

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	struct gendisk		*disk;

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	struct device		dev;

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	/* Buffer for table of contents.  NULL if we haven't allocated

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	   a TOC buffer for this device yet. */

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	struct atapi_toc *toc;

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	u8 max_speed;		/* Max speed of the drive. */

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	u8 current_speed;	/* Current speed of the drive. */

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        /* Per-device info needed by cdrom.c generic driver. */

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        struct cdrom_device_info devinfo;

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	unsigned long write_timeout;

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};

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/* ide-cd_verbose.c */

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void ide_cd_log_error(const char *, struct request *, struct request_sense *);

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/* ide-cd.c functions used by ide-cd_ioctl.c */

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int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,

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		    unsigned *, struct request_sense *, int, unsigned int);

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int ide_cd_read_toc(ide_drive_t *, struct request_sense *);

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int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);

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void ide_cdrom_update_speed(ide_drive_t *, u8 *);

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int cdrom_check_status(ide_drive_t *, struct request_sense *);

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/* ide-cd_ioctl.c */

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int ide_cdrom_open_real(struct cdrom_device_info *, int);

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void ide_cdrom_release_real(struct cdrom_device_info *);

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int ide_cdrom_drive_status(struct cdrom_device_info *, int);

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unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,

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					 unsigned int clearing, int slot_nr);

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int ide_cdrom_tray_move(struct cdrom_device_info *, int);

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int ide_cdrom_lock_door(struct cdrom_device_info *, int);

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int ide_cdrom_select_speed(struct cdrom_device_info *, int);

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int ide_cdrom_get_last_session(struct cdrom_device_info *,

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			       struct cdrom_multisession *);

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int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);

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int ide_cdrom_reset(struct cdrom_device_info *cdi);

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int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);

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int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);

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#endif /* _IDE_CD_H */

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