1 files changed, 41 insertions, 75 deletions

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx.h b/drivers/net/wireless/bcm43xx/bcm43xx.h
index 17a56828e23..c6ee1e974c8 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx.h
+++ b/drivers/net/wireless/bcm43xx/bcm43xx.h
@@ -504,6 +504,12 @@ struct bcm43xx_phyinfo {
 	 * This lock is only used by bcm43xx_phy_{un}lock()
 	 */
 	spinlock_t lock;
+
+	/* Firmware. */
+	const struct firmware *ucode;
+	const struct firmware *pcm;
+	const struct firmware *initvals0;
+	const struct firmware *initvals1;
 };
 
 
@@ -593,12 +599,14 @@ struct bcm43xx_coreinfo {
 	u8 available:1,
 	   enabled:1,
 	   initialized:1;
-	/** core_id ID number */
-	u16 id;
 	/** core_rev revision number */
 	u8 rev;
 	/** Index number for _switch_core() */
 	u8 index;
+	/** core_id ID number */
+	u16 id;
+	/** Core-specific data. */
+	void *priv;
 };
 
 /* Additional information for each 80211 core. */
@@ -647,7 +655,23 @@ enum {
 	BCM43xx_STAT_RESTARTING,	/* controller_restart() called. */
 };
 #define bcm43xx_status(bcm)		atomic_read(&(bcm)->init_status)
-#define bcm43xx_set_status(bcm, stat)	atomic_set(&(bcm)->init_status, (stat))
+#define bcm43xx_set_status(bcm, stat)	do {			\
+		atomic_set(&(bcm)->init_status, (stat));	\
+		smp_wmb();					\
+					} while (0)
+
+/*    *** THEORY OF LOCKING ***
+ *
+ * We have two different locks in the bcm43xx driver.
+ * => bcm->mutex:    General sleeping mutex. Protects struct bcm43xx_private
+ *                   and the device registers. This mutex does _not_ protect
+ *                   against concurrency from the IRQ handler.
+ * => bcm->irq_lock: IRQ spinlock. Protects against IRQ handler concurrency.
+ *
+ * Please note that, if you only take the irq_lock, you are not protected
+ * against concurrency from the periodic work handlers.
+ * Most times you want to take _both_ locks.
+ */
 
 struct bcm43xx_private {
 	struct ieee80211_device *ieee;
@@ -659,7 +683,6 @@ struct bcm43xx_private {
 
 	void __iomem *mmio_addr;
 
-	/* Locking, see "theory of locking" text below. */
 	spinlock_t irq_lock;
 	struct mutex mutex;
 
@@ -691,6 +714,7 @@ struct bcm43xx_private {
 	struct bcm43xx_sprominfo sprom;
 #define BCM43xx_NR_LEDS		4
 	struct bcm43xx_led leds[BCM43xx_NR_LEDS];
+	spinlock_t leds_lock;
 
 	/* The currently active core. */
 	struct bcm43xx_coreinfo *current_core;
@@ -708,10 +732,6 @@ struct bcm43xx_private {
 	struct bcm43xx_coreinfo core_80211[ BCM43xx_MAX_80211_CORES ];
 	/* Additional information, specific to the 80211 cores. */
 	struct bcm43xx_coreinfo_80211 core_80211_ext[ BCM43xx_MAX_80211_CORES ];
-	/* Index of the current 80211 core. If current_core is not
-	 * an 80211 core, this is -1.
-	 */
-	int current_80211_core_idx;
 	/* Number of available 80211 cores. */
 	int nr_80211_available;
 
@@ -724,6 +744,8 @@ struct bcm43xx_private {
 	u32 irq_savedstate;
 	/* Link Quality calculation context. */
 	struct bcm43xx_noise_calculation noisecalc;
+	/* if > 0 MAC is suspended. if == 0 MAC is enabled. */
+	int mac_suspended;
 
 	/* Threshold values. */
 	//TODO: The RTS thr has to be _used_. Currently, it is only set via WX.
@@ -746,12 +768,6 @@ struct bcm43xx_private {
 	struct bcm43xx_key key[54];
 	u8 default_key_idx;
 
-	/* Firmware. */
-	const struct firmware *ucode;
-	const struct firmware *pcm;
-	const struct firmware *initvals0;
-	const struct firmware *initvals1;
-
 	/* Random Number Generator. */
 	struct hwrng rng;
 	char rng_name[20 + 1];
@@ -763,55 +779,6 @@ struct bcm43xx_private {
 };
 
 
-/*    *** THEORY OF LOCKING ***
- *
- * We have two different locks in the bcm43xx driver.
- * => bcm->mutex:    General sleeping mutex. Protects struct bcm43xx_private
- *                   and the device registers.
- * => bcm->irq_lock: IRQ spinlock. Protects against IRQ handler concurrency.
- *
- * We have three types of helper function pairs to utilize these locks.
- *     (Always use the helper functions.)
- * 1) bcm43xx_{un}lock_noirq():
- *     Takes bcm->mutex. Does _not_ protect against IRQ concurrency,
- *     so it is almost always unsafe, if device IRQs are enabled.
- *     So only use this, if device IRQs are masked.
- *     Locking may sleep.
- *     You can sleep within the critical section.
- * 2) bcm43xx_{un}lock_irqonly():
- *     Takes bcm->irq_lock. Does _not_ protect against
- *     bcm43xx_lock_noirq() critical sections.
- *     Does only protect against the IRQ handler path and other
- *     irqonly() critical sections.
- *     Locking does not sleep.
- *     You must not sleep within the critical section.
- * 3) bcm43xx_{un}lock_irqsafe():
- *     This is the cummulative lock and takes both, mutex and irq_lock.
- *     Protects against noirq() and irqonly() critical sections (and
- *     the IRQ handler path).
- *     Locking may sleep.
- *     You must not sleep within the critical section.
- */
-
-/* Lock type 1 */
-#define bcm43xx_lock_noirq(bcm)		mutex_lock(&(bcm)->mutex)
-#define bcm43xx_unlock_noirq(bcm)	mutex_unlock(&(bcm)->mutex)
-/* Lock type 2 */
-#define bcm43xx_lock_irqonly(bcm, flags)	\
-	spin_lock_irqsave(&(bcm)->irq_lock, flags)
-#define bcm43xx_unlock_irqonly(bcm, flags)	\
-	spin_unlock_irqrestore(&(bcm)->irq_lock, flags)
-/* Lock type 3 */
-#define bcm43xx_lock_irqsafe(bcm, flags) do {	\
-	bcm43xx_lock_noirq(bcm);		\
-	bcm43xx_lock_irqonly(bcm, flags);	\
-		} while (0)
-#define bcm43xx_unlock_irqsafe(bcm, flags) do {	\
-	bcm43xx_unlock_irqonly(bcm, flags);	\
-	bcm43xx_unlock_noirq(bcm);		\
-		} while (0)
-
-
 static inline
 struct bcm43xx_private * bcm43xx_priv(struct net_device *dev)
 {
@@ -863,34 +830,33 @@ int bcm43xx_using_pio(struct bcm43xx_private *bcm)
  * any of these functions.
  */
 static inline
+struct bcm43xx_coreinfo_80211 *
+bcm43xx_current_80211_priv(struct bcm43xx_private *bcm)
+{
+	assert(bcm->current_core->id == BCM43xx_COREID_80211);
+	return bcm->current_core->priv;
+}
+static inline
 struct bcm43xx_pio * bcm43xx_current_pio(struct bcm43xx_private *bcm)
 {
 	assert(bcm43xx_using_pio(bcm));
-	assert(bcm->current_80211_core_idx >= 0);
-	assert(bcm->current_80211_core_idx < BCM43xx_MAX_80211_CORES);
-	return &(bcm->core_80211_ext[bcm->current_80211_core_idx].pio);
+	return &(bcm43xx_current_80211_priv(bcm)->pio);
 }
 static inline
 struct bcm43xx_dma * bcm43xx_current_dma(struct bcm43xx_private *bcm)
 {
 	assert(!bcm43xx_using_pio(bcm));
-	assert(bcm->current_80211_core_idx >= 0);
-	assert(bcm->current_80211_core_idx < BCM43xx_MAX_80211_CORES);
-	return &(bcm->core_80211_ext[bcm->current_80211_core_idx].dma);
+	return &(bcm43xx_current_80211_priv(bcm)->dma);
 }
 static inline
 struct bcm43xx_phyinfo * bcm43xx_current_phy(struct bcm43xx_private *bcm)
 {
-	assert(bcm->current_80211_core_idx >= 0);
-	assert(bcm->current_80211_core_idx < BCM43xx_MAX_80211_CORES);
-	return &(bcm->core_80211_ext[bcm->current_80211_core_idx].phy);
+	return &(bcm43xx_current_80211_priv(bcm)->phy);
 }
 static inline
 struct bcm43xx_radioinfo * bcm43xx_current_radio(struct bcm43xx_private *bcm)
 {
-	assert(bcm->current_80211_core_idx >= 0);
-	assert(bcm->current_80211_core_idx < BCM43xx_MAX_80211_CORES);
-	return &(bcm->core_80211_ext[bcm->current_80211_core_idx].radio);
+	return &(bcm43xx_current_80211_priv(bcm)->radio);
 }