57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
|
#ifndef _SCSI_DISK_H
|
||
|
|
#define _SCSI_DISK_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* More than enough for everybody ;) The huge number of majors
|
||
|
|
* is a leftover from 16bit dev_t days, we don't really need that
|
||
|
|
* much numberspace.
|
||
|
|
*/
|
||
|
|
#define SD_MAJORS 16
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is limited by the naming scheme enforced in sd_probe,
|
||
|
|
* add another character to it if you really need more disks.
|
||
|
|
*/
|
||
|
|
#define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Time out in seconds for disks and Magneto-opticals (which are slower).
|
||
|
|
*/
|
||
|
|
#define SD_TIMEOUT (30 * HZ)
|
||
|
|
#define SD_MOD_TIMEOUT (75 * HZ)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Number of allowed retries
|
||
|
|
*/
|
||
|
|
#define SD_MAX_RETRIES 5
|
||
|
|
#define SD_PASSTHROUGH_RETRIES 1
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Size of the initial data buffer for mode and read capacity data
|
||
|
|
*/
|
||
|
|
#define SD_BUF_SIZE 512
|
||
|
|
|
||
|
|
struct scsi_disk {
|
||
|
|
struct scsi_driver *driver; /* always &sd_template */
|
||
|
|
struct scsi_device *device;
|
||
|
|
struct class_device cdev;
|
||
|
|
struct gendisk *disk;
|
||
|
|
unsigned int openers; /* protected by BKL for now, yuck */
|
||
|
|
sector_t capacity; /* size in 512-byte sectors */
|
||
|
|
u32 index;
|
||
|
|
u8 media_present;
|
||
|
|
u8 write_prot;
|
||
|
|
unsigned WCE : 1; /* state of disk WCE bit */
|
||
|
|
unsigned RCD : 1; /* state of disk RCD bit, unused */
|
||
|
|
unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
|
||
|
|
};
|
||
|
|
#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev)
|
||
|
|
|
||
|
|
#define sd_printk(prefix, sdsk, fmt, a...) \
|
||
|
|
(sdsk)->disk ? \
|
||
|
|
sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \
|
||
|
|
(sdsk)->disk->disk_name, ##a) : \
|
||
|
|
sdev_printk(prefix, (sdsk)->device, fmt, ##a)
|
||
|
|
|
||
|
|
#endif /* _SCSI_DISK_H */
|