diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/sd.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/sd.h | 57 |
2 files changed, 58 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 01cefbb2d539..e19691f880b9 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -58,8 +58,8 @@ #include <scsi/scsi_host.h> #include <scsi/scsi_ioctl.h> #include <scsi/scsicam.h> -#include <scsi/sd.h> +#include "sd.h" #include "scsi_logging.h" MODULE_AUTHOR("Eric Youngdale"); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h new file mode 100644 index 000000000000..4f032d48cb6e --- /dev/null +++ b/drivers/scsi/sd.h @@ -0,0 +1,57 @@ +#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 device dev; + 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 previous_state : 1; + 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,dev) + +#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 */ |