+static ssize_t bcm43xx_attr_microcode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned long flags;
+ struct bcm43xx_private *bcm = dev_to_bcm(dev);
+ ssize_t count = 0;
+ u16 status;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ mutex_lock(&(bcm)->mutex);
+ spin_lock_irqsave(&bcm->irq_lock, flags);
+ status = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
+ BCM43xx_UCODE_STATUS);
+
+ spin_unlock_irqrestore(&bcm->irq_lock, flags);
+ mutex_unlock(&(bcm)->mutex);
+ switch (status) {
+ case 0x0000:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (invalid)\n",
+ status);
+ break;
+ case 0x0001:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (init)\n",
+ status);
+ break;
+ case 0x0002:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (active)\n",
+ status);
+ break;
+ case 0x0003:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (suspended)\n",
+ status);
+ break;
+ case 0x0004:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (asleep)\n",
+ status);
+ break;
+ default:
+ count = snprintf(buf, PAGE_SIZE, "0x%.4x (unknown)\n",
+ status);
+ break;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR(microcodestatus, 0444,
+ bcm43xx_attr_microcode_show,
+ NULL);
+