[SCSI] pm80xx: Display controller BIOS version.
Signed-off-by: Anandkumar.Santhanam@pmcs.com
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index d99f41c..5a19e19 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -309,6 +309,39 @@
}
static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
/**
+ * pm8001_ctl_bios_version_show - Bios version Display
+ * @cdev:pointer to embedded class device
+ * @buf:the buffer returned
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+ struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+ char *str = buf;
+ void *virt_addr;
+ int bios_index;
+ DECLARE_COMPLETION_ONSTACK(completion);
+ struct pm8001_ioctl_payload payload;
+
+ pm8001_ha->nvmd_completion = &completion;
+ payload.minor_function = 7;
+ payload.offset = 0;
+ payload.length = 4096;
+ payload.func_specific = kzalloc(4096, GFP_KERNEL);
+ PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
+ wait_for_completion(&completion);
+ virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr;
+ for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
+ bios_index++)
+ str += sprintf(str, "%c",
+ *((u8 *)((u8 *)virt_addr+bios_index)));
+ return str - buf;
+}
+static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
+/**
* pm8001_ctl_aap_log_show - IOP event log
* @cdev: pointer to embedded class device
* @buf: the buffer returned
@@ -609,6 +642,7 @@
&dev_attr_sas_spec_support,
&dev_attr_logging_level,
&dev_attr_host_sas_address,
+ &dev_attr_bios_version,
NULL,
};