| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * sr.h by David Giller |
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| 4 | * CD-ROM disk driver header file |
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| 5 | * |
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| 6 | * adapted from: |
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| 7 | * sd.h Copyright (C) 1992 Drew Eckhardt |
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| 8 | * SCSI disk driver header file by |
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| 9 | * Drew Eckhardt |
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| 10 | * |
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| 11 | * <drew@colorado.edu> |
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| 12 | * |
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| 13 | * Modified by Eric Youngdale eric@andante.org to |
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| 14 | * add scatter-gather, multiple outstanding request, and other |
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| 15 | * enhancements. |
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| 16 | */ |
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| 17 | |
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| 18 | #ifndef _SR_H |
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| 19 | #define _SR_H |
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| 20 | |
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| 21 | #include <linux/mutex.h> |
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| 22 | |
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| 23 | #define MAX_RETRIES 3 |
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| 24 | #define SR_TIMEOUT (30 * HZ) |
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| 25 | |
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| 26 | struct scsi_device; |
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| 27 | |
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| 28 | /* The CDROM is fairly slow, so we need a little extra time */ |
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| 29 | /* In fact, it is very slow if it has to spin up first */ |
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| 30 | #define IOCTL_TIMEOUT 30*HZ |
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| 31 | |
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| 32 | |
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| 33 | typedef struct scsi_cd { |
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| 34 | unsigned capacity; /* size in blocks */ |
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| 35 | struct scsi_device *device; |
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| 36 | unsigned int vendor; /* vendor code, see sr_vendor.c */ |
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| 37 | unsigned long ms_offset; /* for reading multisession-CD's */ |
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| 38 | unsigned writeable : 1; |
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| 39 | unsigned use:1; /* is this device still supportable */ |
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| 40 | unsigned xa_flag:1; /* CD has XA sectors ? */ |
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| 41 | unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */ |
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| 42 | unsigned readcd_cdda:1; /* reading audio data using READ_CD */ |
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| 43 | unsigned media_present:1; /* media is present */ |
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| 44 | |
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| 45 | /* GET_EVENT spurious event handling, blk layer guarantees exclusion */ |
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| 46 | int tur_mismatch; /* nr of get_event TUR mismatches */ |
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| 47 | bool tur_changed:1; /* changed according to TUR */ |
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| 48 | bool get_event_changed:1; /* changed according to GET_EVENT */ |
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| 49 | bool ignore_get_event:1; /* GET_EVENT is unreliable, use TUR */ |
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| 50 | |
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| 51 | struct cdrom_device_info cdi; |
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| 52 | struct mutex lock; |
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| 53 | struct gendisk *disk; |
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| 54 | } Scsi_CD; |
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| 55 | |
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| 56 | #define sr_printk(prefix, cd, fmt, a...) \ |
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| 57 | sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a) |
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| 58 | |
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| 59 | int sr_do_ioctl(Scsi_CD *, struct packet_command *); |
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| 60 | |
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| 61 | int sr_lock_door(struct cdrom_device_info *, int); |
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| 62 | int sr_tray_move(struct cdrom_device_info *, int); |
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| 63 | int sr_drive_status(struct cdrom_device_info *, int); |
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| 64 | int sr_disk_status(struct cdrom_device_info *); |
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| 65 | int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *); |
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| 66 | int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); |
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| 67 | int sr_reset(struct cdrom_device_info *); |
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| 68 | int sr_select_speed(struct cdrom_device_info *cdi, int speed); |
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| 69 | int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); |
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| 70 | |
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| 71 | int sr_is_xa(Scsi_CD *); |
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| 72 | |
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| 73 | /* sr_vendor.c */ |
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| 74 | void sr_vendor_init(Scsi_CD *); |
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| 75 | int sr_cd_check(struct cdrom_device_info *); |
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| 76 | int sr_set_blocklength(Scsi_CD *, int blocklength); |
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| 77 | |
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| 78 | #endif |
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| 79 | |
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