b43: Put multicast frames on the mcast queue

This queues frames flagged as "send after DTIM" by mac80211
on the special multicast queue. The firmware will take care
to send the packet after the DTIM.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 29 insertions, 13 deletions

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 84b291144c3..345ac3862e1 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -252,13 +252,12 @@ static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 	b43_write32(dev, B43_MMIO_RAM_DATA, val);
 }
 
-static inline
-    void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
+static inline void b43_shm_control_word(struct b43_wldev *dev,
+					u16 routing, u16 offset)
 {
 	u32 control;
 
 	/* "offset" is the WORD offset. */
-
 	control = routing;
 	control <<= 16;
 	control |= offset;
@@ -267,8 +266,11 @@ static inline
 
 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 {
+	struct b43_wl *wl = dev->wl;
+	unsigned long flags;
 	u32 ret;
 
+	spin_lock_irqsave(&wl->shm_lock, flags);
 	if (routing == B43_SHM_SHARED) {
 		B43_WARN_ON(offset & 0x0001);
 		if (offset & 0x0003) {
@@ -279,20 +281,25 @@ u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 			b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 			ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
 
-			return ret;
+			goto out;
 		}
 		offset >>= 2;
 	}
 	b43_shm_control_word(dev, routing, offset);
 	ret = b43_read32(dev, B43_MMIO_SHM_DATA);
+out:
+	spin_unlock_irqrestore(&wl->shm_lock, flags);
 
 	return ret;
 }
 
 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
 {
+	struct b43_wl *wl = dev->wl;
+	unsigned long flags;
 	u16 ret;
 
+	spin_lock_irqsave(&wl->shm_lock, flags);
 	if (routing == B43_SHM_SHARED) {
 		B43_WARN_ON(offset & 0x0001);
 		if (offset & 0x0003) {
@@ -300,55 +307,63 @@ u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
 			b43_shm_control_word(dev, routing, offset >> 2);
 			ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 
-			return ret;
+			goto out;
 		}
 		offset >>= 2;
 	}
 	b43_shm_control_word(dev, routing, offset);
 	ret = b43_read16(dev, B43_MMIO_SHM_DATA);
+out:
+	spin_unlock_irqrestore(&wl->shm_lock, flags);
 
 	return ret;
 }
 
 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 {
+	struct b43_wl *wl = dev->wl;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wl->shm_lock, flags);
 	if (routing == B43_SHM_SHARED) {
 		B43_WARN_ON(offset & 0x0001);
 		if (offset & 0x0003) {
 			/* Unaligned access */
 			b43_shm_control_word(dev, routing, offset >> 2);
-			mmiowb();
 			b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 				    (value >> 16) & 0xffff);
-			mmiowb();
 			b43_shm_control_word(dev, routing, (offset >> 2) + 1);
-			mmiowb();
 			b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
-			return;
+			goto out;
 		}
 		offset >>= 2;
 	}
 	b43_shm_control_word(dev, routing, offset);
-	mmiowb();
 	b43_write32(dev, B43_MMIO_SHM_DATA, value);
+out:
+	spin_unlock_irqrestore(&wl->shm_lock, flags);
 }
 
 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 {
+	struct b43_wl *wl = dev->wl;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wl->shm_lock, flags);
 	if (routing == B43_SHM_SHARED) {
 		B43_WARN_ON(offset & 0x0001);
 		if (offset & 0x0003) {
 			/* Unaligned access */
 			b43_shm_control_word(dev, routing, offset >> 2);
-			mmiowb();
 			b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
-			return;
+			goto out;
 		}
 		offset >>= 2;
 	}
 	b43_shm_control_word(dev, routing, offset);
-	mmiowb();
 	b43_write16(dev, B43_MMIO_SHM_DATA, value);
+out:
+	spin_unlock_irqrestore(&wl->shm_lock, flags);
 }
 
 /* Read HostFlags */
@@ -3931,6 +3946,7 @@ static int b43_wireless_init(struct ssb_device *dev)
 	wl->hw = hw;
 	spin_lock_init(&wl->irq_lock);
 	spin_lock_init(&wl->leds_lock);
+	spin_lock_init(&wl->shm_lock);
 	mutex_init(&wl->mutex);
 	INIT_LIST_HEAD(&wl->devlist);