+static ssize_t
+dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ int alias;
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap))
+ alias = devmap->uid.alias;
+ else
+ alias = 0;
+ spin_unlock(&dasd_devmap_lock);
+
+ return sprintf(buf, alias ? "1\n" : "0\n");
+}
+
+static DEVICE_ATTR(alias, 0444, dasd_alias_show, NULL);
+
+static ssize_t
+dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ char *vendor;
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
+ vendor = devmap->uid.vendor;
+ else
+ vendor = "";
+ spin_unlock(&dasd_devmap_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", vendor);
+}
+
+static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
+
+#define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 +\
+ /* SSID */ 4 + 1 + /* unit addr */ 2 + 1)
+
+static ssize_t
+dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ char uid[UID_STRLEN];
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
+ snprintf(uid, sizeof(uid), "%s.%s.%04x.%02x",
+ devmap->uid.vendor, devmap->uid.serial,
+ devmap->uid.ssid, devmap->uid.unit_addr);
+ else
+ uid[0] = 0;
+ spin_unlock(&dasd_devmap_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", uid);
+}
+
+static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL);
+
+/*
+ * extended error-reporting
+ */
+static ssize_t
+dasd_eer_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ int eer_flag;
+
+ devmap = dasd_find_busid(dev->bus_id);
+ if (!IS_ERR(devmap) && devmap->device)
+ eer_flag = dasd_eer_enabled(devmap->device);
+ else
+ eer_flag = 0;
+ return snprintf(buf, PAGE_SIZE, eer_flag ? "1\n" : "0\n");
+}
+
+static ssize_t
+dasd_eer_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dasd_devmap *devmap;
+ int rc;
+
+ devmap = dasd_devmap_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(devmap))
+ return PTR_ERR(devmap);
+ if (!devmap->device)
+ return count;
+ if (buf[0] == '1') {
+ rc = dasd_eer_enable(devmap->device);
+ if (rc)
+ return rc;
+ } else
+ dasd_eer_disable(devmap->device);
+ return count;
+}
+
+static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
+