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[SCSI] hpsa: expose controller firmware revision via /sys.

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Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Stephen M. Cameron 2010-05-27 15:14:34 -05:00 committed by James Bottomley
parent 992ebcf14f
commit d28ce020fb
2 changed files with 27 additions and 0 deletions
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7
Documentation/scsi/hpsa.txt
View file

@ -38,6 +38,7 @@ HPSA specific entries in /sys
------------------------------
/sys/class/scsi_host/host*/rescan
/sys/class/scsi_host/host*/firmware_revision
the host "rescan" attribute is a write only attribute. Writing to this
attribute will cause the driver to scan for new, changed, or removed devices
@ -48,6 +49,12 @@ HPSA specific entries in /sys
normally have to use this. It may be useful when hot plugging devices like
tape drives, or entire storage boxes containing pre-configured logical drives.
The "firmware_revision" attribute contains the firmware version of the Smart Array.
For example:
root@host:/sys/class/scsi_host/host4# cat firmware_revision
7.14
HPSA specific disk attributes:
------------------------------

20
drivers/scsi/hpsa.c
View file

@ -148,6 +148,8 @@ static ssize_t lunid_show(struct device *dev,
struct device_attribute *attr, char *buf);
static ssize_t unique_id_show(struct device *dev,
struct device_attribute *attr, char *buf);
static ssize_t host_show_firmware_revision(struct device *dev,
struct device_attribute *attr, char *buf);
static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
static ssize_t host_store_rescan(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count);
@ -165,6 +167,8 @@ static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
static DEVICE_ATTR(firmware_revision, S_IRUGO,
host_show_firmware_revision, NULL);
static struct device_attribute *hpsa_sdev_attrs[] = {
&dev_attr_raid_level,
@ -175,6 +179,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = {
static struct device_attribute *hpsa_shost_attrs[] = {
&dev_attr_rescan,
&dev_attr_firmware_revision,
NULL,
};
@ -260,6 +265,21 @@ static ssize_t host_store_rescan(struct device *dev,
return count;
}
static ssize_t host_show_firmware_revision(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ctlr_info *h;
struct Scsi_Host *shost = class_to_shost(dev);
unsigned char *fwrev;
h = shost_to_hba(shost);
if (!h->hba_inquiry_data)
return 0;
fwrev = &h->hba_inquiry_data[32];
return snprintf(buf, 20, "%c%c%c%c\n",
fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
}
/* Enqueuing and dequeuing functions for cmdlists. */
static inline void addQ(struct hlist_head *list, struct CommandList *c)
{