Add a sysfs interface to get the raid map index that is being used by
driver.
Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 84ec4ab03364..7a903bde2f48 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3275,6 +3275,18 @@ megasas_dump_system_regs_show(struct device *cdev,
return megasas_dump_sys_regs(instance->reg_set, buf);
}
+static ssize_t
+megasas_raid_map_id_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct megasas_instance *instance =
+ (struct megasas_instance *)shost->hostdata;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n",
+ (unsigned long)instance->map_id);
+}
+
static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
@@ -3289,6 +3301,8 @@ static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
megasas_fw_cmds_outstanding_show, NULL);
static DEVICE_ATTR(dump_system_regs, S_IRUGO,
megasas_dump_system_regs_show, NULL);
+static DEVICE_ATTR(raid_map_id, S_IRUGO,
+ megasas_raid_map_id_show, NULL);
struct device_attribute *megaraid_host_attrs[] = {
&dev_attr_fw_crash_buffer_size,
@@ -3298,6 +3312,7 @@ struct device_attribute *megaraid_host_attrs[] = {
&dev_attr_ldio_outstanding,
&dev_attr_fw_cmds_outstanding,
&dev_attr_dump_system_regs,
+ &dev_attr_raid_map_id,
NULL,
};
--
2.16.1
