#ifndef BCM43xx_H_
#define BCM43xx_H_
+#include <linux/hw_random.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#define BCM43xx_MMIO_TSF_1 0x634 /* core rev < 3 only */
#define BCM43xx_MMIO_TSF_2 0x636 /* core rev < 3 only */
#define BCM43xx_MMIO_TSF_3 0x638 /* core rev < 3 only */
+#define BCM43xx_MMIO_RNG 0x65A
#define BCM43xx_MMIO_POWERUP_DELAY 0x6A8
/* SPROM offsets. */
const struct firmware *initvals0;
const struct firmware *initvals1;
+ /* Random Number Generator. */
+ struct hwrng rng;
+ char rng_name[20 + 1];
+
/* Debugging stuff follows. */
#ifdef CONFIG_BCM43XX_DEBUG
struct bcm43xx_dfsentry *dfsentry;
bcm43xx_clear_keys(bcm);
}
+static int bcm43xx_rng_read(struct hwrng *rng, u32 *data)
+{
+ struct bcm43xx_private *bcm = (struct bcm43xx_private *)rng->priv;
+ unsigned long flags;
+
+ bcm43xx_lock_irqonly(bcm, flags);
+ *data = bcm43xx_read16(bcm, BCM43xx_MMIO_RNG);
+ bcm43xx_unlock_irqonly(bcm, flags);
+
+ return (sizeof(u16));
+}
+
+static void bcm43xx_rng_exit(struct bcm43xx_private *bcm)
+{
+ hwrng_unregister(&bcm->rng);
+}
+
+static int bcm43xx_rng_init(struct bcm43xx_private *bcm)
+{
+ int err;
+
+ snprintf(bcm->rng_name, ARRAY_SIZE(bcm->rng_name),
+ "%s_%s", KBUILD_MODNAME, bcm->net_dev->name);
+ bcm->rng.name = bcm->rng_name;
+ bcm->rng.data_read = bcm43xx_rng_read;
+ bcm->rng.priv = (unsigned long)bcm;
+ err = hwrng_register(&bcm->rng);
+ if (err)
+ printk(KERN_ERR PFX "RNG init failed (%d)\n", err);
+
+ return err;
+}
+
/* This is the opposite of bcm43xx_init_board() */
static void bcm43xx_free_board(struct bcm43xx_private *bcm)
{
bcm43xx_set_status(bcm, BCM43xx_STAT_SHUTTINGDOWN);
+ bcm43xx_rng_exit(bcm);
for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
if (!bcm->core_80211[i].available)
continue;
bcm43xx_switch_core(bcm, &bcm->core_80211[0]);
bcm43xx_mac_enable(bcm);
}
+ err = bcm43xx_rng_init(bcm);
+ if (err)
+ goto err_80211_unwind;
bcm43xx_macfilter_clear(bcm, BCM43xx_MACFILTER_ASSOC);
bcm43xx_macfilter_set(bcm, BCM43xx_MACFILTER_SELF, (u8 *)(bcm->net_dev->dev_addr));
dprintk(KERN_INFO PFX "80211 cores initialized\n");