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84 lines
2.7 KiB
84 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* sr.h by David Giller |
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* CD-ROM disk driver header file |
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* |
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* adapted from: |
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* sd.h Copyright (C) 1992 Drew Eckhardt |
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* SCSI disk driver header file by |
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* Drew Eckhardt |
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* |
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* <[email protected]> |
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* |
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* Modified by Eric Youngdale [email protected] to |
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* add scatter-gather, multiple outstanding request, and other |
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* enhancements. |
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*/ |
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#ifndef _SR_H |
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#define _SR_H |
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#include <linux/genhd.h> |
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#include <linux/kref.h> |
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#include <linux/mutex.h> |
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#define MAX_RETRIES 3 |
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#define SR_TIMEOUT (30 * HZ) |
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struct scsi_device; |
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/* The CDROM is fairly slow, so we need a little extra time */ |
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/* In fact, it is very slow if it has to spin up first */ |
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#define IOCTL_TIMEOUT 30*HZ |
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typedef struct scsi_cd { |
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struct scsi_driver *driver; |
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unsigned capacity; /* size in blocks */ |
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struct scsi_device *device; |
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unsigned int vendor; /* vendor code, see sr_vendor.c */ |
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unsigned long ms_offset; /* for reading multisession-CD's */ |
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unsigned writeable : 1; |
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unsigned use:1; /* is this device still supportable */ |
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unsigned xa_flag:1; /* CD has XA sectors ? */ |
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unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */ |
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unsigned readcd_cdda:1; /* reading audio data using READ_CD */ |
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unsigned media_present:1; /* media is present */ |
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/* GET_EVENT spurious event handling, blk layer guarantees exclusion */ |
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int tur_mismatch; /* nr of get_event TUR mismatches */ |
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bool tur_changed:1; /* changed according to TUR */ |
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bool get_event_changed:1; /* changed according to GET_EVENT */ |
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bool ignore_get_event:1; /* GET_EVENT is unreliable, use TUR */ |
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struct cdrom_device_info cdi; |
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struct mutex lock; |
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/* We hold gendisk and scsi_device references on probe and use |
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* the refs on this kref to decide when to release them */ |
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struct kref kref; |
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struct gendisk *disk; |
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} Scsi_CD; |
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#define sr_printk(prefix, cd, fmt, a...) \ |
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sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a) |
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int sr_do_ioctl(Scsi_CD *, struct packet_command *); |
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int sr_lock_door(struct cdrom_device_info *, int); |
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int sr_tray_move(struct cdrom_device_info *, int); |
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int sr_drive_status(struct cdrom_device_info *, int); |
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int sr_disk_status(struct cdrom_device_info *); |
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int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *); |
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int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); |
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int sr_reset(struct cdrom_device_info *); |
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int sr_select_speed(struct cdrom_device_info *cdi, int speed); |
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int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); |
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int sr_is_xa(Scsi_CD *); |
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/* sr_vendor.c */ |
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void sr_vendor_init(Scsi_CD *); |
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int sr_cd_check(struct cdrom_device_info *); |
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int sr_set_blocklength(Scsi_CD *, int blocklength); |
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#endif
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