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scsi: smartpqi: add raid level show 

Display the RAID level via sysfs

Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kevin Barnett 2017-05-03 18:55:31 -05:00 committed by Martin K. Petersen
parent 588a63fea1
commit a9f9339241
1 changed files with 29 additions and 1 deletions
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30
drivers/scsi/smartpqi/smartpqi_init.c
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@ -144,7 +144,7 @@ static char *pqi_raid_level_to_string(u8 raid_level)
if (raid_level < ARRAY_SIZE(raid_levels))
return raid_levels[raid_level];
return "";
return "RAID UNKNOWN";
}
#define SA_RAID_0 0
@ -5754,13 +5754,41 @@ static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
return 2;
}
static ssize_t pqi_raid_level_show(struct device *dev,
struct device_attribute *attr, char *buffer)
{
struct pqi_ctrl_info *ctrl_info;
struct scsi_device *sdev;
struct pqi_scsi_dev *device;
unsigned long flags;
char *raid_level;
sdev = to_scsi_device(dev);
ctrl_info = shost_to_hba(sdev->host);
spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
device = sdev->hostdata;
if (pqi_is_logical_device(device))
raid_level = pqi_raid_level_to_string(device->raid_level);
else
raid_level = "N/A";
spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
}
static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
pqi_ssd_smart_path_enabled_show, NULL);
static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
static struct device_attribute *pqi_sdev_attrs[] = {
&dev_attr_sas_address,
&dev_attr_ssd_smart_path_enabled,
&dev_attr_raid_level,
NULL
};