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e73aec82 MP |
1 | #ifndef _SCSI_DISK_H |
2 | #define _SCSI_DISK_H | |
3 | ||
4 | /* | |
5 | * More than enough for everybody ;) The huge number of majors | |
6 | * is a leftover from 16bit dev_t days, we don't really need that | |
7 | * much numberspace. | |
8 | */ | |
9 | #define SD_MAJORS 16 | |
10 | ||
11 | /* | |
12 | * This is limited by the naming scheme enforced in sd_probe, | |
13 | * add another character to it if you really need more disks. | |
14 | */ | |
15 | #define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26) | |
16 | ||
17 | /* | |
18 | * Time out in seconds for disks and Magneto-opticals (which are slower). | |
19 | */ | |
20 | #define SD_TIMEOUT (30 * HZ) | |
21 | #define SD_MOD_TIMEOUT (75 * HZ) | |
22 | ||
23 | /* | |
24 | * Number of allowed retries | |
25 | */ | |
26 | #define SD_MAX_RETRIES 5 | |
27 | #define SD_PASSTHROUGH_RETRIES 1 | |
28 | ||
29 | /* | |
30 | * Size of the initial data buffer for mode and read capacity data | |
31 | */ | |
32 | #define SD_BUF_SIZE 512 | |
33 | ||
34 | struct scsi_disk { | |
35 | struct scsi_driver *driver; /* always &sd_template */ | |
36 | struct scsi_device *device; | |
37 | struct class_device cdev; | |
38 | struct gendisk *disk; | |
39 | unsigned int openers; /* protected by BKL for now, yuck */ | |
40 | sector_t capacity; /* size in 512-byte sectors */ | |
41 | u32 index; | |
42 | u8 media_present; | |
43 | u8 write_prot; | |
44 | unsigned WCE : 1; /* state of disk WCE bit */ | |
45 | unsigned RCD : 1; /* state of disk RCD bit, unused */ | |
46 | unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ | |
47 | }; | |
48 | #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev) | |
49 | ||
e73aec82 MP |
50 | #define sd_printk(prefix, sdsk, fmt, a...) \ |
51 | (sdsk)->disk ? \ | |
52 | sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \ | |
53 | (sdsk)->disk->disk_name, ##a) : \ | |
54 | sdev_printk(prefix, (sdsk)->device, fmt, ##a) | |
55 | ||
56 | #endif /* _SCSI_DISK_H */ |