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authorAnand Kumar Santhanam <AnandKumar.Santhanam@pmcs.com>2013-09-18 12:54:41 +0530
committerJames Bottomley <JBottomley@Parallels.com>2013-10-25 09:58:14 +0100
commit966fdcff8eb78cce81da8f5adc5b7fe601b53d18 (patch)
tree31edbb4ff5b10f2aea4a580d4262c9ebdf60e12f
parentcb993e5d50dd82e3d675225e2eff3c77951682b0 (diff)
downloadlinux-966fdcff8eb78cce81da8f5adc5b7fe601b53d18.tar.bz2
[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>
-rw-r--r--drivers/scsi/pm8001/pm8001_ctl.c34
-rw-r--r--drivers/scsi/pm8001/pm8001_ctl.h2
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index d99f41c2ca13..5a19e1930b4b 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -309,6 +309,39 @@ static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
}
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 @@ struct device_attribute *pm8001_host_attrs[] = {
&dev_attr_sas_spec_support,
&dev_attr_logging_level,
&dev_attr_host_sas_address,
+ &dev_attr_bios_version,
NULL,
};
diff --git a/drivers/scsi/pm8001/pm8001_ctl.h b/drivers/scsi/pm8001/pm8001_ctl.h
index 63ad4aa0c422..c6d8fdd3b9b9 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.h
+++ b/drivers/scsi/pm8001/pm8001_ctl.h
@@ -45,6 +45,8 @@
#define HEADER_LEN 28
#define SIZE_OFFSET 16
+#define BIOSOFFSET 56
+#define BIOS_OFFSET_LIMIT 61
#define FLASH_OK 0x000000
#define FAIL_OPEN_BIOS_FILE 0x000100