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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 | #define MAX_RETRIES 3 |
24 | #define SR_TIMEOUT (30 * HZ) |
25 | |
26 | struct scsi_device; |
27 | |
28 | /* The CDROM is fairly slow, so we need a little extra time */ |
29 | /* In fact, it is very slow if it has to spin up first */ |
30 | #define IOCTL_TIMEOUT 30*HZ |
31 | |
32 | |
33 | typedef struct scsi_cd { |
34 | struct scsi_driver *driver; |
35 | unsigned capacity; /* size in blocks */ |
36 | struct scsi_device *device; |
37 | unsigned int vendor; /* vendor code, see sr_vendor.c */ |
38 | unsigned long ms_offset; /* for reading multisession-CD's */ |
39 | unsigned use:1; /* is this device still supportable */ |
40 | unsigned xa_flag:1; /* CD has XA sectors ? */ |
41 | unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */ |
42 | unsigned readcd_cdda:1; /* reading audio data using READ_CD */ |
43 | unsigned previous_state:1; /* media has changed */ |
44 | struct cdrom_device_info cdi; |
45 | /* We hold gendisk and scsi_device references on probe and use |
46 | * the refs on this kref to decide when to release them */ |
47 | struct kref kref; |
48 | struct gendisk *disk; |
49 | } Scsi_CD; |
50 | |
51 | int sr_do_ioctl(Scsi_CD *, struct packet_command *); |
52 | |
53 | int sr_lock_door(struct cdrom_device_info *, int); |
54 | int sr_tray_move(struct cdrom_device_info *, int); |
55 | int sr_drive_status(struct cdrom_device_info *, int); |
56 | int sr_disk_status(struct cdrom_device_info *); |
57 | int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *); |
58 | int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); |
59 | int sr_reset(struct cdrom_device_info *); |
60 | int sr_select_speed(struct cdrom_device_info *cdi, int speed); |
61 | int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); |
62 | |
63 | int sr_is_xa(Scsi_CD *); |
64 | int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr); |
65 | |
66 | /* sr_vendor.c */ |
67 | void sr_vendor_init(Scsi_CD *); |
68 | int sr_cd_check(struct cdrom_device_info *); |
69 | int sr_set_blocklength(Scsi_CD *, int blocklength); |
70 | |
71 | #endif |
72 |
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