/* * sr.h by David Giller * CD-ROM disk driver header file * * adapted from: * sd.h Copyright (C) 1992 Drew Eckhardt * SCSI disk driver header file by * Drew Eckhardt * * <drew@colorado.edu> * * Modified by Eric Youngdale eric@andante.org to * add scatter-gather, multiple outstanding request, and other * enhancements. */ #ifndef _SR_H #define _SR_H #include <linux/genhd.h> #include <linux/kref.h> #define MAX_RETRIES 3 #define SR_TIMEOUT (30 * HZ) struct scsi_device; /* The CDROM is fairly slow, so we need a little extra time */ /* In fact, it is very slow if it has to spin up first */ #define IOCTL_TIMEOUT 30*HZ typedef struct scsi_cd { struct scsi_driver *driver; unsigned capacity; /* size in blocks */ struct scsi_device *device; unsigned int vendor; /* vendor code, see sr_vendor.c */ unsigned long ms_offset; /* for reading multisession-CD's */ unsigned writeable : 1; unsigned use:1; /* is this device still supportable */ unsigned xa_flag:1; /* CD has XA sectors ? */ unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */ unsigned readcd_cdda:1; /* reading audio data using READ_CD */ unsigned media_present:1; /* media is present */ /* GET_EVENT spurious event handling, blk layer guarantees exclusion */ int tur_mismatch; /* nr of get_event TUR mismatches */ bool tur_changed:1; /* changed according to TUR */ bool get_event_changed:1; /* changed according to GET_EVENT */ bool ignore_get_event:1; /* GET_EVENT is unreliable, use TUR */ struct cdrom_device_info cdi; /* We hold gendisk and scsi_device references on probe and use * the refs on this kref to decide when to release them */ struct kref kref; struct gendisk *disk; } Scsi_CD; #define sr_printk(prefix, cd, fmt, a...) \ sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a) int sr_do_ioctl(Scsi_CD *, struct packet_command *); int sr_lock_door(struct cdrom_device_info *, int); int sr_tray_move(struct cdrom_device_info *, int); int sr_drive_status(struct cdrom_device_info *, int); int sr_disk_status(struct cdrom_device_info *); int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *); int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); int sr_reset(struct cdrom_device_info *); int sr_select_speed(struct cdrom_device_info *cdi, int speed); int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); int sr_is_xa(Scsi_CD *); /* sr_vendor.c */ void sr_vendor_init(Scsi_CD *); int sr_cd_check(struct cdrom_device_info *); int sr_set_blocklength(Scsi_CD *, int blocklength); #endif