1 /* 2 * sr.h by David Giller 3 * CD-ROM disk driver header file 4 * 5 * adapted from: 6 * sd.h Copyright (C) 1992 Drew Eckhardt 7 * SCSI disk driver header file by 8 * Drew Eckhardt 9 * 10 * <drew@colorado.edu> 11 * 12 * Modified by Eric Youngdale eric@andante.org to 13 * add scatter-gather, multiple outstanding request, and other 14 * enhancements. 15 */ 16 17 #ifndef _SR_H 18 #define _SR_H 19 20 #include <linux/genhd.h> 21 #include <linux/kref.h> 22 23 struct scsi_device; 24 25 /* The CDROM is fairly slow, so we need a little extra time */ 26 /* In fact, it is very slow if it has to spin up first */ 27 #define IOCTL_TIMEOUT 30*HZ 28 29 30 typedef struct scsi_cd { 31 struct scsi_driver *driver; 32 unsigned capacity; /* size in blocks */ 33 struct scsi_device *device; 34 unsigned int vendor; /* vendor code, see sr_vendor.c */ 35 unsigned long ms_offset; /* for reading multisession-CD's */ 36 unsigned needs_sector_size:1; /* needs to get sector size */ 37 unsigned use:1; /* is this device still supportable */ 38 unsigned xa_flag:1; /* CD has XA sectors ? */ 39 unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */ 40 unsigned readcd_cdda:1; /* reading audio data using READ_CD */ 41 struct cdrom_device_info cdi; 42 /* We hold gendisk and scsi_device references on probe and use 43 * the refs on this kref to decide when to release them */ 44 struct kref kref; 45 struct gendisk *disk; 46 } Scsi_CD; 47 48 int sr_do_ioctl(Scsi_CD *, struct packet_command *); 49 50 int sr_lock_door(struct cdrom_device_info *, int); 51 int sr_tray_move(struct cdrom_device_info *, int); 52 int sr_drive_status(struct cdrom_device_info *, int); 53 int sr_disk_status(struct cdrom_device_info *); 54 int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *); 55 int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); 56 int sr_reset(struct cdrom_device_info *); 57 int sr_select_speed(struct cdrom_device_info *cdi, int speed); 58 int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); 59 int sr_dev_ioctl(struct cdrom_device_info *, unsigned int, unsigned long); 60 61 int sr_is_xa(Scsi_CD *); 62 63 /* sr_vendor.c */ 64 void sr_vendor_init(Scsi_CD *); 65 int sr_cd_check(struct cdrom_device_info *); 66 int sr_set_blocklength(Scsi_CD *, int blocklength); 67 68 #endif 69