summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorWayne Boyer <wayneb@linux.vnet.ibm.com>2010-08-11 07:15:17 -0700
committerJames Bottomley <James.Bottomley@suse.de>2010-09-05 14:33:42 -0300
commit46d7456324766cd291d7ccd5b4927cbd3c28fb1b (patch)
treef77d0cd8507a560ad626328af75b9ecc3cf8de63
parent6f7efaabefebfbc523ea9776e3663a2d81b86399 (diff)
[SCSI] ipr: fix resource address formatting and add attribute for device ID
This patch fixes a resource address formatting problem where the first byte was being zeroed out. Also, the device ID is now made available as a sysfs attribute. Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com> Acked-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
-rw-r--r--drivers/scsi/ipr.c43
-rw-r--r--drivers/scsi/ipr.h4
2 files changed, 45 insertions, 2 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 52568588039f..67875d41345f 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -1096,6 +1096,7 @@ static void ipr_init_res_entry(struct ipr_resource_entry *res,
res->bus = cfgtew->u.cfgte->res_addr.bus;
res->target = cfgtew->u.cfgte->res_addr.target;
res->lun = cfgtew->u.cfgte->res_addr.lun;
+ res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
}
ipr_update_ata_class(res, proto);
@@ -1142,7 +1143,7 @@ static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
int i;
char *p = buffer;
- res_path[0] = '\0';
+ *p = '\0';
p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
@@ -4089,6 +4090,7 @@ static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
/**
* ipr_show_adapter_handle - Show the adapter's resource handle for this device
* @dev: device struct
+ * @attr: device attribute structure
* @buf: buffer
*
* Return value:
@@ -4122,6 +4124,7 @@ static struct device_attribute ipr_adapter_handle_attr = {
* ipr_show_resource_path - Show the resource path or the resource address for
* this device.
* @dev: device struct
+ * @attr: device attribute structure
* @buf: buffer
*
* Return value:
@@ -4159,8 +4162,45 @@ static struct device_attribute ipr_resource_path_attr = {
};
/**
+ * ipr_show_device_id - Show the device_id for this device.
+ * @dev: device struct
+ * @attr: device attribute structure
+ * @buf: buffer
+ *
+ * Return value:
+ * number of bytes printed to buffer
+ **/
+static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
+ struct ipr_resource_entry *res;
+ unsigned long lock_flags = 0;
+ ssize_t len = -ENXIO;
+
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ res = (struct ipr_resource_entry *)sdev->hostdata;
+ if (res && ioa_cfg->sis64)
+ len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
+ else if (res)
+ len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
+
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+ return len;
+}
+
+static struct device_attribute ipr_device_id_attr = {
+ .attr = {
+ .name = "device_id",
+ .mode = S_IRUGO,
+ },
+ .show = ipr_show_device_id
+};
+
+/**
* ipr_show_resource_type - Show the resource type for this device.
* @dev: device struct
+ * @attr: device attribute structure
* @buf: buffer
*
* Return value:
@@ -4195,6 +4235,7 @@ static struct device_attribute ipr_resource_type_attr = {
static struct device_attribute *ipr_dev_attrs[] = {
&ipr_adapter_handle_attr,
&ipr_resource_path_attr,
+ &ipr_device_id_attr,
&ipr_resource_type_attr,
NULL,
};
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 4d31625ab9cf..16bc77a2be36 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -26,6 +26,7 @@
#ifndef _IPR_H
#define _IPR_H
+#include <asm/unaligned.h>
#include <linux/types.h>
#include <linux/completion.h>
#include <linux/libata.h>
@@ -372,7 +373,7 @@ struct ipr_config_table_entry {
struct ipr_res_addr res_addr;
__be32 res_handle;
- __be32 reserved4[2];
+ __be32 lun_wwn[2];
struct ipr_std_inq_data std_inq_data;
}__attribute__ ((packed, aligned (4)));
@@ -1210,6 +1211,7 @@ struct ipr_resource_entry {
__be32 res_handle;
__be64 dev_id;
+ __be64 lun_wwn;
struct scsi_lun dev_lun;
u8 res_path[8];