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author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 22:00:54 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 22:00:54 +0200 |
commit | bb2c018b09b681d43f5e08124b83e362647ea82b (patch) | |
tree | d794902c78f9fdd04ed88a4b8d451ed6f9292ec0 /drivers/scsi/sd.h | |
parent | 82638844d9a8581bbf33201cc209a14876eca167 (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
download | linux-bb2c018b09b681d43f5e08124b83e362647ea82b.tar.gz linux-bb2c018b09b681d43f5e08124b83e362647ea82b.tar.bz2 linux-bb2c018b09b681d43f5e08124b83e362647ea82b.zip |
Merge branch 'linus' into cpus4096
Conflicts:
drivers/acpi/processor_throttling.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/scsi/sd.h')
-rw-r--r-- | drivers/scsi/sd.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h new file mode 100644 index 000000000000..03a3d45cfa42 --- /dev/null +++ b/drivers/scsi/sd.h @@ -0,0 +1,62 @@ +#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) + +static inline struct scsi_disk *scsi_disk(struct gendisk *disk) +{ + return container_of(disk->private_data, struct scsi_disk, driver); +} + +#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 */ |