3 files changed, 68 insertions, 13 deletions

diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 21c886a9a1d..6dcbb3c87e7 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -980,6 +980,42 @@ void b43_dma_free(struct b43_wldev *dev)
 	destroy_ring(dma, tx_ring_mcast);
 }
 
+static int b43_dma_set_mask(struct b43_wldev *dev, u64 mask)
+{
+	u64 orig_mask = mask;
+	bool fallback = 0;
+	int err;
+
+	/* Try to set the DMA mask. If it fails, try falling back to a
+	 * lower mask, as we can always also support a lower one. */
+	while (1) {
+		err = ssb_dma_set_mask(dev->dev, mask);
+		if (!err)
+			break;
+		if (mask == DMA_64BIT_MASK) {
+			mask = DMA_32BIT_MASK;
+			fallback = 1;
+			continue;
+		}
+		if (mask == DMA_32BIT_MASK) {
+			mask = DMA_30BIT_MASK;
+			fallback = 1;
+			continue;
+		}
+		b43err(dev->wl, "The machine/kernel does not support "
+		       "the required %u-bit DMA mask\n",
+		       (unsigned int)dma_mask_to_engine_type(orig_mask));
+		return -EOPNOTSUPP;
+	}
+	if (fallback) {
+		b43info(dev->wl, "DMA mask fallback from %u-bit to %u-bit\n",
+			(unsigned int)dma_mask_to_engine_type(orig_mask),
+			(unsigned int)dma_mask_to_engine_type(mask));
+	}
+
+	return 0;
+}
+
 int b43_dma_init(struct b43_wldev *dev)
 {
 	struct b43_dma *dma = &dev->dma;
@@ -989,14 +1025,9 @@ int b43_dma_init(struct b43_wldev *dev)
 
 	dmamask = supported_dma_mask(dev);
 	type = dma_mask_to_engine_type(dmamask);
-	err = ssb_dma_set_mask(dev->dev, dmamask);
-	if (err) {
-		b43err(dev->wl, "The machine/kernel does not support "
-		       "the required DMA mask (0x%08X%08X)\n",
-		       (unsigned int)((dmamask & 0xFFFFFFFF00000000ULL) >> 32),
-		       (unsigned int)(dmamask & 0x00000000FFFFFFFFULL));
-		return -EOPNOTSUPP;
-	}
+	err = b43_dma_set_mask(dev, dmamask);
+	if (err)
+		return err;
 
 	err = -ENOMEM;
 	/* setup TX DMA channels. */
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index cf5c046c9fa..94a0cdeb39a 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -84,6 +84,10 @@ int b43_modparam_qos = 1;
 module_param_named(qos, b43_modparam_qos, int, 0444);
 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
 
+static int modparam_btcoex = 1;
+module_param_named(btcoex, modparam_btcoex, int, 0444);
+MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
+
 
 static const struct ssb_device_id b43_ssb_tbl[] = {
 	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
@@ -3706,8 +3710,10 @@ static void setup_struct_wldev_for_init(struct b43_wldev *dev)
 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
 {
 	struct ssb_sprom *sprom = &dev->dev->bus->sprom;
-	u32 hf;
+	u64 hf;
 
+	if (!modparam_btcoex)
+		return;
 	if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
 		return;
 	if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
@@ -3719,11 +3725,13 @@ static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
 	else
 		hf |= B43_HF_BTCOEX;
 	b43_hf_write(dev, hf);
-	//TODO
 }
 
 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
-{				//TODO
+{
+	if (!modparam_btcoex)
+		return;
+	//TODO
 }
 
 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
@@ -3852,7 +3860,8 @@ static int b43_wireless_core_init(struct b43_wldev *dev)
 	struct ssb_sprom *sprom = &bus->sprom;
 	struct b43_phy *phy = &dev->phy;
 	int err;
-	u32 hf, tmp;
+	u64 hf;
+	u32 tmp;
 
 	B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
 
@@ -4414,8 +4423,16 @@ static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
 	return err;
 }
 
+#define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice)		( \
+	(pdev->vendor == PCI_VENDOR_ID_##_vendor) &&			\
+	(pdev->device == _device) &&					\
+	(pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) &&	\
+	(pdev->subsystem_device == _subdevice)				)
+
 static void b43_sprom_fixup(struct ssb_bus *bus)
 {
+	struct pci_dev *pdev;
+
 	/* boardflags workarounds */
 	if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
 	    bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
@@ -4423,6 +4440,13 @@ static void b43_sprom_fixup(struct ssb_bus *bus)
 	if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
 	    bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
 		bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
+	if (bus->bustype == SSB_BUSTYPE_PCI) {
+		pdev = bus->host_pci;
+		if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
+		    IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
+		    IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
+			bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
+	}
 }
 
 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
diff --git a/drivers/net/wireless/b43/phy.c b/drivers/net/wireless/b43/phy.c
index 575c5436ebd..de024dc0371 100644
--- a/drivers/net/wireless/b43/phy.c
+++ b/drivers/net/wireless/b43/phy.c
@@ -2043,7 +2043,7 @@ int b43_phy_init(struct b43_wldev *dev)
 void b43_set_rx_antenna(struct b43_wldev *dev, int antenna)
 {
 	struct b43_phy *phy = &dev->phy;
-	u32 hf;
+	u64 hf;
 	u16 tmp;
 	int autodiv = 0;