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cciss: Add lunid attribute to each logical drive in /sys 

Add lunid attribute to each logical drive at
/sys/devices/<dev>/ccissX/cXdY/lunid for controller X,
logical drive Y

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Stephen M. Cameron 2009-09-17 13:48:10 -05:00 committed by Jens Axboe
parent 2e043986d5
commit ce84a8aeac
2 changed files with 33 additions and 0 deletions
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7
Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
View File

@ -38,3 +38,10 @@ Kernel Version: 2.6.31
Contact: iss_storagedev@hp.com
Description: Kicks of a rescan of the controller to discover logical
drive topology changes.
Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/lunid
Date: August 2009
Kernel Version: 2.6.31
Contact: iss_storagedev@hp.com
Description: Displays the 8-byte LUN ID used to address logical
drive Y of controller X.

26
drivers/block/cciss.c
View File

@ -579,6 +579,31 @@ static ssize_t dev_show_rev(struct device *dev,
}
DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL);
static ssize_t cciss_show_lunid(struct device *dev,
struct device_attribute *attr, char *buf)
{
drive_info_struct *drv = dev_get_drvdata(dev);
struct ctlr_info *h = to_hba(drv->dev->parent);
unsigned long flags;
unsigned char lunid[8];
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
if (h->busy_configuring) {
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return -EBUSY;
}
if (!drv->heads) {
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return -ENOTTY;
}
memcpy(lunid, drv->LunID, sizeof(lunid));
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
lunid[0], lunid[1], lunid[2], lunid[3],
lunid[4], lunid[5], lunid[6], lunid[7]);
}
DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL);
static struct attribute *cciss_host_attrs[] = {
&dev_attr_rescan.attr,
NULL
@ -604,6 +629,7 @@ static struct attribute *cciss_dev_attrs[] = {
&dev_attr_model.attr,
&dev_attr_vendor.attr,
&dev_attr_rev.attr,
&dev_attr_lunid.attr,
NULL
};