Subject: [PATCH] bcm43xx: init routine rewrite

From: Michael Buesch <[email-masked]>
Date: Sat, 8 Jul 2006 22:02:18 +0200

Hi John,

Please apply this to wireless-2.6.

--

Rewrite of the bcm43xx initialization routines.
This fixes several issues:
* up-down-up-down-up... stale data issue
  (May fix some DHCP issues)
* Fix the init vs IRQ handler race (and remove the workaround)
* Fix init for cards with multiple cores (APHY)
  As softmac has no internal PHY handling (unlike dscape),
  this adds the file "phymode" to sysfs.
  The active PHY can be selected by writing either a, b or g
  to this file. Current PHY can be determined by reading from it.
* Fix the controller restart code.
  Controller restart can now also be triggered through
  echo 1 > /debug/bcm43xx/ethX/restart

Signed-off-by: Michael Buesch <[email-masked]>

Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx.h
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx.h	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx.h	2006-07-08 19:24:54.000000000 +0200
@@ -502,6 +502,12 @@
 	 * 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;
 };

@@ -591,12 +597,14 @@
 	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. */
@@ -645,7 +653,10 @@
 	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)
 
 struct bcm43xx_private {
 	struct ieee80211_device *ieee;
@@ -706,10 +717,6 @@
 	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;
 
@@ -744,12 +751,6 @@
 	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;
-
 	/* Debugging stuff follows. */
 #ifdef CONFIG_BCM43XX_DEBUG
 	struct bcm43xx_dfsentry *dfsentry;
@@ -857,34 +858,33 @@
  * 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);
 }

Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_main.c	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c	2006-07-08 22:00:10.000000000 +0200
@@ -509,23 +509,19 @@
 }
 
 /* Make sure we don't receive more data from the device. */
-static int bcm43xx_disable_interrupts_sync(struct bcm43xx_private *bcm, u32 *oldstate)
+static int bcm43xx_disable_interrupts_sync(struct bcm43xx_private *bcm)
 {
 	unsigned long flags;
-	u32 old;
 
 	bcm43xx_lock_irqonly(bcm, flags);
 	if (unlikely(bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED)) {
 		bcm43xx_unlock_irqonly(bcm, flags);
 		return -EBUSY;
 	}
-	old = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
+	bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
 	bcm43xx_unlock_irqonly(bcm, flags);
 	bcm43xx_synchronize_irq(bcm);
 
-	if (oldstate)
-		*oldstate = old;
-
 	return 0;
 }
 
@@ -537,7 +533,6 @@
 	u16 manufact;
 	u16 version;
 	u8 revision;
-	s8 i;
 
 	if (bcm->chip_id == 0x4317) {
 		if (bcm->chip_rev == 0x00)
@@ -580,20 +575,11 @@
 	radio->version = version;
 	radio->revision = revision;
 
-	/* Set default attenuation values. */
-	radio->baseband_atten = bcm43xx_default_baseband_attenuation(bcm);
-	radio->radio_atten = bcm43xx_default_radio_attenuation(bcm);
-	radio->txctl1 = bcm43xx_default_txctl1(bcm);
-	radio->txctl2 = 0xFFFF;
 	if (phy->type == BCM43xx_PHYTYPE_A)
 		radio->txpower_desired = bcm->sprom.maxpower_aphy;
 	else
 		radio->txpower_desired = bcm->sprom.maxpower_bgphy;
 
-	/* Initialize the in-memory nrssi Lookup Table. */
-	for (i = 0; i < 64; i++)
-		radio->nrssi_lt[i] = i;
-
 	return 0;
 
 err_unsupported_radio:
@@ -1250,10 +1236,6 @@
 		goto out;
 
 	bcm->current_core = new_core;
-	bcm->current_80211_core_idx = -1;
-	if (new_core->id == BCM43xx_COREID_80211)
-		bcm->current_80211_core_idx = (int)(new_core - &(bcm->core_80211[0]));
-
 out:
 	return err;
 }
@@ -1423,43 +1405,23 @@
 	bcm43xx_core_disable(bcm, 0);
 }
 
-/* Mark the current 80211 core inactive.
- * "active_80211_core" is the other 80211 core, which is used.
- */
-static int bcm43xx_wireless_core_mark_inactive(struct bcm43xx_private *bcm,
-					       struct bcm43xx_coreinfo *active_80211_core)
+/* Mark the current 80211 core inactive. */
+static void bcm43xx_wireless_core_mark_inactive(struct bcm43xx_private *bcm)
 {
 	u32 sbtmstatelow;
-	struct bcm43xx_coreinfo *old_core;
-	int err = 0;
 
 	bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
 	bcm43xx_radio_turn_off(bcm);
 	sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
-	sbtmstatelow &= ~0x200a0000;
-	sbtmstatelow |= 0xa0000;
+	sbtmstatelow &= 0xDFF5FFFF;
+	sbtmstatelow |= 0x000A0000;
 	bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
 	udelay(1);
 	sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
-	sbtmstatelow &= ~0xa0000;
-	sbtmstatelow |= 0x80000;
+	sbtmstatelow &= 0xFFF5FFFF;
+	sbtmstatelow |= 0x00080000;
 	bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
 	udelay(1);
-
-	if (bcm43xx_current_phy(bcm)->type == BCM43xx_PHYTYPE_G) {
-		old_core = bcm->current_core;
-		err = bcm43xx_switch_core(bcm, active_80211_core);
-		if (err)
-			goto out;
-		sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
-		sbtmstatelow &= ~0x20000000;
-		sbtmstatelow |= 0x20000000;
-		bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
-		err = bcm43xx_switch_core(bcm, old_core);
-	}
-
-out:
-	return err;
 }
 
 static void handle_irq_transmit_status(struct bcm43xx_private *bcm)
@@ -1885,14 +1847,8 @@
 
 	spin_lock(&bcm->irq_lock);
 
-	/* Only accept IRQs, if we are initialized properly.
-	 * This avoids an RX race while initializing.
-	 * We should probably not enable IRQs before we are initialized
-	 * completely, but some careful work is needed to fix this. I think it
-	 * is best to stay with this cheap workaround for now... .
-	 */
-	if (unlikely(bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED))
-		goto out;
+	assert(bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
+	assert(bcm->current_core->id == BCM43xx_COREID_80211);
 
 	reason = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
 	if (reason == 0xffffffff) {
@@ -1930,16 +1886,18 @@
 
 static void bcm43xx_release_firmware(struct bcm43xx_private *bcm, int force)
 {
+	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
+
 	if (bcm->firmware_norelease && !force)
 		return; /* Suspending or controller reset. */
-	release_firmware(bcm->ucode);
-	bcm->ucode = NULL;
-	release_firmware(bcm->pcm);
-	bcm->pcm = NULL;
-	release_firmware(bcm->initvals0);
-	bcm->initvals0 = NULL;
-	release_firmware(bcm->initvals1);
-	bcm->initvals1 = NULL;
+	release_firmware(phy->ucode);
+	phy->ucode = NULL;
+	release_firmware(phy->pcm);
+	phy->pcm = NULL;
+	release_firmware(phy->initvals0);
+	phy->initvals0 = NULL;
+	release_firmware(phy->initvals1);
+	phy->initvals1 = NULL;
 }
 
 static int bcm43xx_request_firmware(struct bcm43xx_private *bcm)
@@ -1950,11 +1908,11 @@
 	int nr;
 	char buf[22 + sizeof(modparam_fwpostfix) - 1] = { 0 };
 
-	if (!bcm->ucode) {
+	if (!phy->ucode) {
 		snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_microcode%d%s.fw",
 			 (rev >= 5 ? 5 : rev),
 			 modparam_fwpostfix);
-		err = request_firmware(&bcm->ucode, buf, &bcm->pci_dev->dev);
+		err = request_firmware(&phy->ucode, buf, &bcm->pci_dev->dev);
 		if (err) {
 			printk(KERN_ERR PFX 
 			       "Error: Microcode \"%s\" not available or load failed.\n",
@@ -1963,12 +1921,12 @@
 		}
 	}
 
-	if (!bcm->pcm) {
+	if (!phy->pcm) {
 		snprintf(buf, ARRAY_SIZE(buf),
 			 "bcm43xx_pcm%d%s.fw",
 			 (rev < 5 ? 4 : 5),
 			 modparam_fwpostfix);
-		err = request_firmware(&bcm->pcm, buf, &bcm->pci_dev->dev);
+		err = request_firmware(&phy->pcm, buf, &bcm->pci_dev->dev);
 		if (err) {
 			printk(KERN_ERR PFX
 			       "Error: PCM \"%s\" not available or load failed.\n",
@@ -1977,7 +1935,7 @@
 		}
 	}
 
-	if (!bcm->initvals0) {
+	if (!phy->initvals0) {
 		if (rev == 2 || rev == 4) {
 			switch (phy->type) {
 			case BCM43xx_PHYTYPE_A:
@@ -2008,20 +1966,20 @@
 		snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_initval%02d%s.fw",
 			 nr, modparam_fwpostfix);
 
-		err = request_firmware(&bcm->initvals0, buf, &bcm->pci_dev->dev);
+		err = request_firmware(&phy->initvals0, buf, &bcm->pci_dev->dev);
 		if (err) {
 			printk(KERN_ERR PFX 
 			       "Error: InitVals \"%s\" not available or load failed.\n",
 			        buf);
 			goto error;
 		}
-		if (bcm->initvals0->size % sizeof(struct bcm43xx_initval)) {
+		if (phy->initvals0->size % sizeof(struct bcm43xx_initval)) {
 			printk(KERN_ERR PFX "InitVals fileformat error.\n");
 			goto error;
 		}
 	}
 
-	if (!bcm->initvals1) {
+	if (!phy->initvals1) {
 		if (rev >= 5) {
 			u32 sbtmstatehigh;
 
@@ -2043,14 +2001,14 @@
 			snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_initval%02d%s.fw",
 				 nr, modparam_fwpostfix);
 
-			err = request_firmware(&bcm->initvals1, buf, &bcm->pci_dev->dev);
+			err = request_firmware(&phy->initvals1, buf, &bcm->pci_dev->dev);
 			if (err) {
 				printk(KERN_ERR PFX 
 				       "Error: InitVals \"%s\" not available or load failed.\n",
 			        	buf);
 				goto error;
 			}
-			if (bcm->initvals1->size % sizeof(struct bcm43xx_initval)) {
+			if (phy->initvals1->size % sizeof(struct bcm43xx_initval)) {
 				printk(KERN_ERR PFX "InitVals fileformat error.\n");
 				goto error;
 			}
@@ -2070,12 +2028,13 @@
 
 static void bcm43xx_upload_microcode(struct bcm43xx_private *bcm)
 {
+	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
 	const u32 *data;
 	unsigned int i, len;
 
 	/* Upload Microcode. */
-	data = (u32 *)(bcm->ucode->data);
-	len = bcm->ucode->size / sizeof(u32);
+	data = (u32 *)(phy->ucode->data);
+	len = phy->ucode->size / sizeof(u32);
 	bcm43xx_shm_control_word(bcm, BCM43xx_SHM_UCODE, 0x0000);
 	for (i = 0; i < len; i++) {
 		bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA,
@@ -2084,8 +2043,8 @@
 	}
 
 	/* Upload PCM data. */
-	data = (u32 *)(bcm->pcm->data);
-	len = bcm->pcm->size / sizeof(u32);
+	data = (u32 *)(phy->pcm->data);
+	len = phy->pcm->size / sizeof(u32);
 	bcm43xx_shm_control_word(bcm, BCM43xx_SHM_PCM, 0x01ea);
 	bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA, 0x00004000);
 	bcm43xx_shm_control_word(bcm, BCM43xx_SHM_PCM, 0x01eb);
@@ -2131,15 +2090,16 @@
 
 static int bcm43xx_upload_initvals(struct bcm43xx_private *bcm)
 {
+	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
 	int err;
 
-	err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)bcm->initvals0->data,
-				     bcm->initvals0->size / sizeof(struct bcm43xx_initval));
+	err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)phy->initvals0->data,
+				     phy->initvals0->size / sizeof(struct bcm43xx_initval));
 	if (err)
 		goto out;
-	if (bcm->initvals1) {
-		err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)bcm->initvals1->data,
-					     bcm->initvals1->size / sizeof(struct bcm43xx_initval));
+	if (phy->initvals1) {
+		err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)phy->initvals1->data,
+					     phy->initvals1->size / sizeof(struct bcm43xx_initval));
 		if (err)
 			goto out;
 	}
@@ -2156,9 +2116,7 @@
 
 static int bcm43xx_initialize_irq(struct bcm43xx_private *bcm)
 {
-	int res;
-	unsigned int i;
-	u32 data;
+	int err;
 
 	bcm->irq = bcm->pci_dev->irq;
 #ifdef CONFIG_BCM947XX
@@ -2175,32 +2133,12 @@
 		}
 	}
 #endif
-	res = request_irq(bcm->irq, bcm43xx_interrupt_handler,
+	err = request_irq(bcm->irq, bcm43xx_interrupt_handler,
 			  SA_SHIRQ, KBUILD_MODNAME, bcm);
-	if (res) {
+	if (err)
 		printk(KERN_ERR PFX "Cannot register IRQ%d\n", bcm->irq);
-		return -ENODEV;
-	}
-	bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, 0xffffffff);
-	bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, 0x00020402);
-	i = 0;
-	while (1) {
-		data = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
-		if (data == BCM43xx_IRQ_READY)
-			break;
-		i++;
-		if (i >= BCM43xx_IRQWAIT_MAX_RETRIES) {
-			printk(KERN_ERR PFX "Card IRQ register not responding. "
-					    "Giving up.\n");
-			free_irq(bcm->irq, bcm);
-			return -ENODEV;
-		}
-		udelay(10);
-	}
-	// dummy read
-	bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
 
-	return 0;
+	return err;
 }
 
 /* Switch to the core used to write the GPIO register.
@@ -2394,7 +2332,6 @@
 	if (!modparam_noleds)
 		bcm43xx_leds_exit(bcm);
 	bcm43xx_gpio_cleanup(bcm);
-	free_irq(bcm->irq, bcm);
 	bcm43xx_release_firmware(bcm, 0);
 }
 
@@ -2406,7 +2343,7 @@
 	struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
 	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
 	int err;
-	int tmp;
+	int i, tmp;
 	u32 value32;
 	u16 value16;
 
@@ -2419,13 +2356,26 @@
 		goto out;
 	bcm43xx_upload_microcode(bcm);
 
-	err = bcm43xx_initialize_irq(bcm);
-	if (err)
-		goto err_release_fw;
+	bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, 0xFFFFFFFF);
+	bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, 0x00020402);
+	i = 0;
+	while (1) {
+		value32 = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
+		if (value32 == BCM43xx_IRQ_READY)
+			break;
+		i++;
+		if (i >= BCM43xx_IRQWAIT_MAX_RETRIES) {
+			printk(KERN_ERR PFX "IRQ_READY timeout\n");
+			err = -ENODEV;
+			goto err_release_fw;
+		}
+		udelay(10);
+	}
+	bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
 
 	err = bcm43xx_gpio_init(bcm);
 	if (err)
-		goto err_free_irq;
+		goto err_release_fw;
 
 	err = bcm43xx_upload_initvals(bcm);
 	if (err)
@@ -2509,8 +2459,6 @@
 	bcm43xx_radio_turn_off(bcm);
 err_gpio_cleanup:
 	bcm43xx_gpio_cleanup(bcm);
-err_free_irq:
-	free_irq(bcm->irq, bcm);
 err_release_fw:
 	bcm43xx_release_firmware(bcm, 1);
 	goto out;
@@ -2550,11 +2498,9 @@
 {
 	/* Initialize a "phyinfo" structure. The structure is already
 	 * zeroed out.
+	 * This is called on insmod time to initialize members.
 	 */
-	phy->antenna_diversity = 0xFFFF;
 	phy->savedpctlreg = 0xFFFF;
-	phy->minlowsig[0] = 0xFFFF;
-	phy->minlowsig[1] = 0xFFFF;
 	spin_lock_init(&phy->lock);
 }
 
@@ -2562,14 +2508,11 @@
 {
 	/* Initialize a "radioinfo" structure. The structure is already
 	 * zeroed out.
+	 * This is called on insmod time to initialize members.
 	 */
 	radio->interfmode = BCM43xx_RADIO_INTERFMODE_NONE;
 	radio->channel = 0xFF;
 	radio->initial_channel = 0xFF;
-	radio->lofcal = 0xFFFF;
-	radio->initval = 0xFFFF;
-	radio->nrssi[0] = -1000;
-	radio->nrssi[1] = -1000;
 }
 
 static int bcm43xx_probe_cores(struct bcm43xx_private *bcm)
@@ -2587,7 +2530,6 @@
 				    * BCM43xx_MAX_80211_CORES);
 	memset(&bcm->core_80211_ext, 0, sizeof(struct bcm43xx_coreinfo_80211)
 					* BCM43xx_MAX_80211_CORES);
-	bcm->current_80211_core_idx = -1;
 	bcm->nr_80211_available = 0;
 	bcm->current_core = NULL;
 	bcm->active_80211_core = NULL;
@@ -2757,6 +2699,7 @@
 				goto out;
 			}
 			bcm->nr_80211_available++;
+			core->priv = ext_80211;
 			bcm43xx_init_struct_phyinfo(&ext_80211->phy);
 			bcm43xx_init_struct_radioinfo(&ext_80211->radio);
 			break;
@@ -2857,7 +2800,8 @@
 }
 
 /* http://bcm-specs.sipsolutions.net/80211Init */
-static int bcm43xx_wireless_core_init(struct bcm43xx_private *bcm)
+static int bcm43xx_wireless_core_init(struct bcm43xx_private *bcm,
+				      int active_wlcore)
 {
 	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
 	struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
@@ -2939,19 +2883,26 @@
 	if (bcm->current_core->rev >= 5)
 		bcm43xx_write16(bcm, 0x043C, 0x000C);
 
-	if (bcm43xx_using_pio(bcm))
-		err = bcm43xx_pio_init(bcm);
-	else
-		err = bcm43xx_dma_init(bcm);
-	if (err)
-		goto err_chip_cleanup;
+	if (active_wlcore) {
+		if (bcm43xx_using_pio(bcm))
+			err = bcm43xx_pio_init(bcm);
+		else
+			err = bcm43xx_dma_init(bcm);
+		if (err)
+			goto err_chip_cleanup;
+	}
 	bcm43xx_write16(bcm, 0x0612, 0x0050);
 	bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0416, 0x0050);
 	bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0414, 0x01F4);
 
-	bcm43xx_mac_enable(bcm);
-	bcm43xx_interrupt_enable(bcm, bcm->irq_savedstate);
+	if (active_wlcore) {
+		if (radio->initial_channel != 0xFF)
+			bcm43xx_radio_selectchannel(bcm, radio->initial_channel, 0);
+	}
 
+	/* Don't enable MAC/IRQ here, as it will race with the IRQ handler.
+	 * We enable it later.
+	 */
 	bcm->current_core->initialized = 1;
 out:
 	return err;
@@ -3066,11 +3017,6 @@
 	return err;
 }
 
-static void bcm43xx_softmac_init(struct bcm43xx_private *bcm)
-{
-	ieee80211softmac_start(bcm->net_dev);
-}
-
 static void bcm43xx_periodic_every120sec(struct bcm43xx_private *bcm)
 {
 	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
@@ -3238,135 +3184,322 @@
 	bcm43xx_clear_keys(bcm);
 }
 
-/* This is the opposite of bcm43xx_init_board() */
-static void bcm43xx_free_board(struct bcm43xx_private *bcm)
+static int bcm43xx_shutdown_all_wireless_cores(struct bcm43xx_private *bcm)
 {
+	int ret = 0;
 	int i, err;
+	struct bcm43xx_coreinfo *core;
 
-	bcm43xx_lock_noirq(bcm);
+	bcm43xx_set_status(bcm, BCM43xx_STAT_SHUTTINGDOWN);
+	for (i = 0; i < bcm->nr_80211_available; i++) {
+		core = &(bcm->core_80211[i]);
+		assert(core->available);
+		if (!core->initialized)
+			continue;
+		err = bcm43xx_switch_core(bcm, core);
+		if (err) {
+			dprintk(KERN_ERR PFX "shutdown_all_wireless_cores "
+					     "switch_core failed (%d)\n", err);
+			ret = err;
+			continue;
+		}
+		bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
+		bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
+		bcm43xx_wireless_core_cleanup(bcm);
+		if (core == bcm->active_80211_core)
+			bcm->active_80211_core = NULL;
+	}
+	free_irq(bcm->irq, bcm);
+	bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
+
+	return ret;
+}
+
+/* This is the opposite of bcm43xx_init_board() */
+static void bcm43xx_free_board(struct bcm43xx_private *bcm)
+{
 	bcm43xx_sysfs_unregister(bcm);
 	bcm43xx_periodic_tasks_delete(bcm);
 
-	bcm43xx_set_status(bcm, BCM43xx_STAT_SHUTTINGDOWN);
+	bcm43xx_lock_noirq(bcm);
+	bcm43xx_shutdown_all_wireless_cores(bcm);
+	bcm43xx_pctl_set_crystal(bcm, 0);
+	bcm43xx_unlock_noirq(bcm);
+}
+
+static void prepare_phydata_for_init(struct bcm43xx_phyinfo *phy)
+{
+	phy->antenna_diversity = 0xFFFF;
+	memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
+	memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
+
+	/* Flags */
+	phy->calibrated = 0;
+	phy->is_locked = 0;
+
+	if (phy->_lo_pairs) {
+		memset(phy->_lo_pairs, 0,
+		       sizeof(struct bcm43xx_lopair) * BCM43xx_LO_COUNT);
+	}
+	memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
+}
+
+static void prepare_radiodata_for_init(struct bcm43xx_private *bcm,
+				       struct bcm43xx_radioinfo *radio)
+{
+	int i;
+
+	/* Set default attenuation values. */
+	radio->baseband_atten = bcm43xx_default_baseband_attenuation(bcm);
+	radio->radio_atten = bcm43xx_default_radio_attenuation(bcm);
+	radio->txctl1 = bcm43xx_default_txctl1(bcm);
+	radio->txctl2 = 0xFFFF;
+	radio->txpwr_offset = 0;
+
+	/* NRSSI */
+	radio->nrssislope = 0;
+	for (i = 0; i < ARRAY_SIZE(radio->nrssi); i++)
+		radio->nrssi[i] = -1000;
+	for (i = 0; i < ARRAY_SIZE(radio->nrssi_lt); i++)
+		radio->nrssi_lt[i] = i;
+
+	radio->lofcal = 0xFFFF;
+	radio->initval = 0xFFFF;
+
+	radio->aci_enable = 0;
+	radio->aci_wlan_automatic = 0;
+	radio->aci_hw_rssi = 0;
+}
+
+static void prepare_priv_for_init(struct bcm43xx_private *bcm)
+{
+	int i;
+	struct bcm43xx_coreinfo *core;
+	struct bcm43xx_coreinfo_80211 *wlext;
+
+	assert(!bcm->active_80211_core);
+
+	bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZING);
 
+	/* Flags */
+	bcm->was_initialized = 0;
+	bcm->reg124_set_0x4 = 0;
+
+	/* Stats */
+	memset(&bcm->stats, 0, sizeof(bcm->stats));
+
+	/* Wireless core data */
 	for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
-		if (!bcm->core_80211[i].available)
-			continue;
-		if (!bcm->core_80211[i].initialized)
+		core = &(bcm->core_80211[i]);
+		wlext = core->priv;
+
+		if (!core->available)
 			continue;
+		assert(wlext == &(bcm->core_80211_ext[i]));
 
-		err = bcm43xx_switch_core(bcm, &bcm->core_80211[i]);
-		assert(err == 0);
-		bcm43xx_wireless_core_cleanup(bcm);
+		prepare_phydata_for_init(&wlext->phy);
+		prepare_radiodata_for_init(bcm, &wlext->radio);
 	}
 
-	bcm43xx_pctl_set_crystal(bcm, 0);
+	/* IRQ related flags */
+	bcm->irq_reason = 0;
+	memset(bcm->dma_reason, 0, sizeof(bcm->dma_reason));
+	bcm->irq_savedstate = BCM43xx_IRQ_INITIAL;
 
-	bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
-	bcm43xx_unlock_noirq(bcm);
+	/* Noise calculation context */
+	memset(&bcm->noisecalc, 0, sizeof(bcm->noisecalc));
+
+	/* Periodic work context */
+	bcm->periodic_state = 0;
 }
 
-static int bcm43xx_init_board(struct bcm43xx_private *bcm)
+static int wireless_core_up(struct bcm43xx_private *bcm,
+			    int active_wlcore)
+{
+	int err;
+
+	if (!bcm43xx_core_enabled(bcm))
+		bcm43xx_wireless_core_reset(bcm, 1);
+	if (!active_wlcore)
+		bcm43xx_wireless_core_mark_inactive(bcm);
+	err = bcm43xx_wireless_core_init(bcm, active_wlcore);
+	if (err)
+		goto out;
+	if (!active_wlcore)
+		bcm43xx_radio_turn_off(bcm);
+out:
+	return err;
+}
+
+/* Select and enable the "to be used" wireless core.
+ * Locking: bcm->mutex must be aquired before calling this.
+ *          bcm->irq_lock must not be aquired.
+ */
+int bcm43xx_select_wireless_core(struct bcm43xx_private *bcm,
+				 int phytype)
 {
 	int i, err;
-	int connect_phy;
+	struct bcm43xx_coreinfo *active_core = NULL;
+	struct bcm43xx_coreinfo_80211 *active_wlext = NULL;
+	struct bcm43xx_coreinfo *core;
+	struct bcm43xx_coreinfo_80211 *wlext;
+	int adjust_active_sbtmstatelow = 0;
 
 	might_sleep();
 
-	bcm43xx_lock_noirq(bcm);
-	bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZING);
+	if (phytype < 0) {
+		/* If no phytype is requested, select the first core. */
+		assert(bcm->core_80211[0].available);
+		wlext = bcm->core_80211[0].priv;
+		phytype = wlext->phy.type;
+	}
+	/* Find the requested core. */
+	for (i = 0; i < bcm->nr_80211_available; i++) {
+		core = &(bcm->core_80211[i]);
+		wlext = core->priv;
+		if (wlext->phy.type == phytype) {
+			active_core = core;
+			active_wlext = wlext;
+			break;
+		}
+	}
+	if (!active_core)
+		return -ESRCH; /* No such PHYTYPE on this board. */
+
+	if (bcm->active_80211_core) {
+		/* We already selected a wl core in the past.
+		 * So first clean up everything.
+		 */
+		dprintk(KERN_INFO PFX "select_wireless_core: cleanup\n");
+		ieee80211softmac_stop(bcm->net_dev);
+		bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZED);
+		err = bcm43xx_disable_interrupts_sync(bcm);
+		assert(!err);
+		tasklet_enable(&bcm->isr_tasklet);
+		err = bcm43xx_shutdown_all_wireless_cores(bcm);
+		if (err)
+			goto error;
+		/* Ok, everything down, continue to re-initialize. */
+		bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZING);
+	}
+
+	/* Reset all data structures. */
+	prepare_priv_for_init(bcm);
 
-	err = bcm43xx_pctl_set_crystal(bcm, 1);
-	if (err)
-		goto out;
-	err = bcm43xx_pctl_init(bcm);
-	if (err)
-		goto err_crystal_off;
 	err = bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_FAST);
 	if (err)
-		goto err_crystal_off;
+		goto error;
 
-	tasklet_enable(&bcm->isr_tasklet);
+	/* Mark all unused cores "inactive". */
 	for (i = 0; i < bcm->nr_80211_available; i++) {
-		err = bcm43xx_switch_core(bcm, &bcm->core_80211[i]);
-		assert(err != -ENODEV);
-		if (err)
-			goto err_80211_unwind;
+		core = &(bcm->core_80211[i]);
+		wlext = core->priv;
 
-		/* Enable the selected wireless core.
-		 * Connect PHY only on the first core.
-		 */
-		if (!bcm43xx_core_enabled(bcm)) {
-			if (bcm->nr_80211_available == 1) {
-				connect_phy = bcm43xx_current_phy(bcm)->connected;
-			} else {
-				if (i == 0)
-					connect_phy = 1;
-				else
-					connect_phy = 0;
-			}
-			bcm43xx_wireless_core_reset(bcm, connect_phy);
+		if (core == active_core)
+			continue;
+		err = bcm43xx_switch_core(bcm, core);
+		if (err) {
+			dprintk(KERN_ERR PFX "Could not switch to inactive "
+					     "802.11 core (%d)\n", err);
+			goto error;
 		}
+		err = wireless_core_up(bcm, 0);
+		if (err) {
+			dprintk(KERN_ERR PFX "core_up for inactive 802.11 core "
+					     "failed (%d)\n", err);
+			goto error;
+		}
+		adjust_active_sbtmstatelow = 1;
+	}
 
-		if (i != 0)
-			bcm43xx_wireless_core_mark_inactive(bcm, &bcm->core_80211[0]);
-
-		err = bcm43xx_wireless_core_init(bcm);
-		if (err)
-			goto err_80211_unwind;
+	/* Now initialize the active 802.11 core. */
+	err = bcm43xx_switch_core(bcm, active_core);
+	if (err) {
+		dprintk(KERN_ERR PFX "Could not switch to active "
+				     "802.11 core (%d)\n", err);
+		goto error;
+	}
+	if (adjust_active_sbtmstatelow &&
+	    active_wlext->phy.type == BCM43xx_PHYTYPE_G) {
+		u32 sbtmstatelow;
 
-		if (i != 0) {
-			bcm43xx_mac_suspend(bcm);
-			bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
-			bcm43xx_radio_turn_off(bcm);
-		}
+		sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
+		sbtmstatelow |= 0x20000000;
+		bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
 	}
-	bcm->active_80211_core = &bcm->core_80211[0];
-	if (bcm->nr_80211_available >= 2) {
-		bcm43xx_switch_core(bcm, &bcm->core_80211[0]);
-		bcm43xx_mac_enable(bcm);
+	err = wireless_core_up(bcm, 1);
+	if (err) {
+		dprintk(KERN_ERR PFX "core_up for active 802.11 core "
+				     "failed (%d)\n", err);
+		goto error;
 	}
+	err = bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_DYNAMIC);
+	if (err)
+		goto error;
+	bcm->active_80211_core = active_core;
+
 	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");
 	bcm43xx_security_init(bcm);
-	bcm43xx_softmac_init(bcm);
+	ieee80211softmac_start(bcm->net_dev);
 
-	bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_DYNAMIC);
+	/* Let's go! Be careful after enabling the IRQs.
+	 * Don't switch cores, for example.
+	 */
+	bcm43xx_mac_enable(bcm);
+	bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZED);
+	err = bcm43xx_initialize_irq(bcm);
+	if (err)
+		goto error;
+	bcm43xx_interrupt_enable(bcm, bcm->irq_savedstate);
 
-	if (bcm43xx_current_radio(bcm)->initial_channel != 0xFF) {
-		bcm43xx_mac_suspend(bcm);
-		bcm43xx_radio_selectchannel(bcm, bcm43xx_current_radio(bcm)->initial_channel, 0);
-		bcm43xx_mac_enable(bcm);
-	}
+	dprintk(KERN_INFO PFX "Selected 802.11 core (phytype %d)\n",
+		active_wlext->phy.type);
 
-	/* Initialization of the board is done. Flag it as such. */
-	bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZED);
+	return 0;
+
+error:
+	bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
+	bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_SLOW);
+	return err;
+}
+
+static int bcm43xx_init_board(struct bcm43xx_private *bcm)
+{
+	int err;
+
+	bcm43xx_lock_noirq(bcm);
+
+	tasklet_enable(&bcm->isr_tasklet);
+	err = bcm43xx_pctl_set_crystal(bcm, 1);
+	if (err)
+		goto err_tasklet;
+	err = bcm43xx_pctl_init(bcm);
+	if (err)
+		goto err_crystal_off;
+	err = bcm43xx_select_wireless_core(bcm, -1);
+	if (err)
+		goto err_crystal_off;
 
 	bcm43xx_periodic_tasks_setup(bcm);
-	bcm43xx_sysfs_register(bcm);
-	//FIXME: check for bcm43xx_sysfs_register failure. This function is a bit messy regarding unwinding, though...
+	err = bcm43xx_sysfs_register(bcm);
+	if (err)
+		goto err_wlshutdown;
 
 	/*FIXME: This should be handled by softmac instead. */
 	schedule_work(&bcm->softmac->associnfo.work);
 
-	assert(err == 0);
 out:
 	bcm43xx_unlock_noirq(bcm);
 
 	return err;
 
-err_80211_unwind:
-	tasklet_disable(&bcm->isr_tasklet);
-	/* unwind all 80211 initialization */
-	for (i = 0; i < bcm->nr_80211_available; i++) {
-		if (!bcm->core_80211[i].initialized)
-			continue;
-		bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
-		bcm43xx_wireless_core_cleanup(bcm);
-	}
+err_wlshutdown:
+	bcm43xx_shutdown_all_wireless_cores(bcm);
 err_crystal_off:
 	bcm43xx_pctl_set_crystal(bcm, 0);
+err_tasklet:
+	tasklet_disable(&bcm->isr_tasklet);
 	goto out;
 }
 
@@ -3744,7 +3877,8 @@
 	unsigned long flags;
 
 	local_irq_save(flags);
-	bcm43xx_interrupt_handler(bcm->irq, bcm, NULL);
+	if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED)
+		bcm43xx_interrupt_handler(bcm->irq, bcm, NULL);
 	local_irq_restore(flags);
 }
 #endif /* CONFIG_NET_POLL_CONTROLLER */
@@ -3762,7 +3896,7 @@
 	int err;
 
 	ieee80211softmac_stop(net_dev);
-	err = bcm43xx_disable_interrupts_sync(bcm, NULL);
+	err = bcm43xx_disable_interrupts_sync(bcm);
 	assert(!err);
 	bcm43xx_free_board(bcm);
 
@@ -3903,7 +4037,6 @@
 	bcm43xx_debugfs_remove_device(bcm);
 	unregister_netdev(net_dev);
 	bcm43xx_detach_board(bcm);
-	assert(bcm->ucode == NULL);
 	free_ieee80211softmac(net_dev);
 }
 
@@ -3913,47 +4046,25 @@
 static void bcm43xx_chip_reset(void *_bcm)
 {
 	struct bcm43xx_private *bcm = _bcm;
-	struct net_device *net_dev = bcm->net_dev;
-	struct pci_dev *pci_dev = bcm->pci_dev;
+	struct bcm43xx_phyinfo *phy;
 	int err;
-	int was_initialized = (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
-
-	netif_stop_queue(bcm->net_dev);
-	tasklet_disable(&bcm->isr_tasklet);
 
-	bcm->firmware_norelease = 1;
-	if (was_initialized)
-		bcm43xx_free_board(bcm);
-	bcm->firmware_norelease = 0;
-	bcm43xx_detach_board(bcm);
-	err = bcm43xx_init_private(bcm, net_dev, pci_dev);
-	if (err)
-		goto failure;
-	err = bcm43xx_attach_board(bcm);
-	if (err)
-		goto failure;
-	if (was_initialized) {
-		err = bcm43xx_init_board(bcm);
-		if (err)
-			goto failure;
-	}
-	netif_wake_queue(bcm->net_dev);
-	printk(KERN_INFO PFX "Controller restarted\n");
+	bcm43xx_lock_noirq(bcm);
+	phy = bcm43xx_current_phy(bcm);
+	err = bcm43xx_select_wireless_core(bcm, phy->type);
+	bcm43xx_unlock_noirq(bcm);
 
-	return;
-failure:
-	printk(KERN_ERR PFX "Controller restart failed\n");
+	printk(KERN_ERR PFX "Controller restart%s\n",
+	       (err == 0) ? "ed" : " failed");
 }
 
 /* Hard-reset the chip.
  * This can be called from interrupt or process context.
- * Make sure to _not_ re-enable device interrupts after this has been called.
-*/
+ */
 void bcm43xx_controller_restart(struct bcm43xx_private *bcm, const char *reason)
 {
+	assert(bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
 	bcm43xx_set_status(bcm, BCM43xx_STAT_RESTARTING);
-	bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
-	bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD); /* dummy read */
 	printk(KERN_ERR PFX "Controller RESET (%s) ...\n", reason);
 	INIT_WORK(&bcm->restart_work, bcm43xx_chip_reset, bcm);
 	schedule_work(&bcm->restart_work);
@@ -3965,21 +4076,16 @@
 {
 	struct net_device *net_dev = pci_get_drvdata(pdev);
 	struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
-	unsigned long flags;
-	int try_to_shutdown = 0, err;
+	int err;
 
 	dprintk(KERN_INFO PFX "Suspending...\n");
 
-	bcm43xx_lock_irqsafe(bcm, flags);
-	bcm->was_initialized = (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
-	if (bcm->was_initialized)
-		try_to_shutdown = 1;
-	bcm43xx_unlock_irqsafe(bcm, flags);
-
 	netif_device_detach(net_dev);
-	if (try_to_shutdown) {
+	bcm->was_initialized = 0;
+	if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) {
+		bcm->was_initialized = 1;
 		ieee80211softmac_stop(net_dev);
-		err = bcm43xx_disable_interrupts_sync(bcm, &bcm->irq_savedstate);
+		err = bcm43xx_disable_interrupts_sync(bcm);
 		if (unlikely(err)) {
 			dprintk(KERN_ERR PFX "Suspend failed.\n");
 			return -EAGAIN;
@@ -4012,17 +4118,14 @@
 	pci_restore_state(pdev);
 
 	bcm43xx_chipset_attach(bcm);
-	if (bcm->was_initialized) {
-		bcm->irq_savedstate = BCM43xx_IRQ_INITIAL;
+	if (bcm->was_initialized)
 		err = bcm43xx_init_board(bcm);
-	}
 	if (err) {
 		printk(KERN_ERR PFX "Resume failed!\n");
 		return err;
 	}
-
 	netif_device_attach(net_dev);
-	
+
 	dprintk(KERN_INFO PFX "Device resumed.\n");
 
 	return 0;
Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c	2006-07-08 19:24:54.000000000 +0200
@@ -306,6 +306,40 @@
 	return res;
 }
 
+static ssize_t restart_write_file(struct file *file, const char __user *user_buf,
+				  size_t count, loff_t *ppos)
+{
+	struct bcm43xx_private *bcm = file->private_data;
+	char *buf = really_big_buffer;
+	ssize_t buf_size;
+	ssize_t res;
+	unsigned long flags;
+
+	buf_size = min(count, sizeof (really_big_buffer) - 1);
+	down(&big_buffer_sem);
+	if (copy_from_user(buf, user_buf, buf_size)) {
+	        res = -EFAULT;
+		goto out_up;
+	}
+	bcm43xx_lock_irqsafe(bcm, flags);
+	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
+		printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
+		res = -EFAULT;
+		goto out_unlock;
+	}
+	if (count > 0 && buf[0] == '1') {
+		bcm43xx_controller_restart(bcm, "manually restarted");
+		res = count;
+	} else
+		res = -EINVAL;
+
+out_unlock:
+	bcm43xx_unlock_irqsafe(bcm, flags);
+out_up:
+	up(&big_buffer_sem);
+	return res;
+}
+
 #undef fappend

@@ -339,6 +373,11 @@
 	.open = open_file_generic,
 };
 
+static struct file_operations restart_fops = {
+	.write = restart_write_file,
+	.open = open_file_generic,
+};
+
 
 void bcm43xx_debugfs_add_device(struct bcm43xx_private *bcm)
 {
@@ -390,6 +429,10 @@
 						bcm, &txstat_fops);
 	if (!e->dentry_txstat)
 		printk(KERN_ERR PFX "debugfs: creating \"tx_status\" for \"%s\" failed!\n", devdir);
+	e->dentry_restart = debugfs_create_file("restart", 0222, e->subdir,
+						bcm, &restart_fops);
+	if (!e->dentry_restart)
+		printk(KERN_ERR PFX "debugfs: creating \"restart\" for \"%s\" failed!\n", devdir);
 }
 
 void bcm43xx_debugfs_remove_device(struct bcm43xx_private *bcm)
@@ -405,6 +448,7 @@
 	debugfs_remove(e->dentry_devinfo);
 	debugfs_remove(e->dentry_tsf);
 	debugfs_remove(e->dentry_txstat);
+	debugfs_remove(e->dentry_restart);
 	debugfs_remove(e->subdir);
 	kfree(e->xmitstatus_buffer);
 	kfree(e->xmitstatus_print_buffer);
Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.h
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.h	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.h	2006-07-08 19:24:54.000000000 +0200
@@ -20,6 +20,7 @@
 	struct dentry *dentry_spromdump;
 	struct dentry *dentry_tsf;
 	struct dentry *dentry_txstat;
+	struct dentry *dentry_restart;
 
 	struct bcm43xx_private *bcm;
 
Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.h
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_main.h	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.h	2006-07-08 19:24:54.000000000 +0200
@@ -133,6 +133,9 @@
 
 int bcm43xx_switch_core(struct bcm43xx_private *bcm, struct bcm43xx_coreinfo *new_core);
 
+int bcm43xx_select_wireless_core(struct bcm43xx_private *bcm,
+				 int phytype);
+
 void bcm43xx_wireless_core_reset(struct bcm43xx_private *bcm, int connect_phy);
 
 void bcm43xx_mac_suspend(struct bcm43xx_private *bcm);
Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c	2006-07-08 18:31:40.000000000 +0200
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c	2006-07-08 19:24:54.000000000 +0200
@@ -299,6 +299,70 @@
 		   bcm43xx_attr_preamble_show,
 		   bcm43xx_attr_preamble_store);
 
+static ssize_t bcm43xx_attr_phymode_store(struct device *dev,
+					  struct device_attribute *attr,
+					  const char *buf, size_t count)
+{
+	struct bcm43xx_private *bcm = dev_to_bcm(dev);
+	int phytype;
+	int err = -EINVAL;
+
+	if (count < 1)
+		goto out;
+	switch (buf[0]) {
+	case 'a':  case 'A':
+		phytype = BCM43xx_PHYTYPE_A;
+		break;
+	case 'b':  case 'B':
+		phytype = BCM43xx_PHYTYPE_B;
+		break;
+	case 'g':  case 'G':
+		phytype = BCM43xx_PHYTYPE_G;
+		break;
+	default:
+		goto out;
+	}
+
+	bcm43xx_lock_noirq(bcm);
+	err = bcm43xx_select_wireless_core(bcm, phytype);
+	bcm43xx_unlock_noirq(bcm);
+	if (err == -ESRCH)
+		err = -ENODEV;
+
+out:
+	return err ? err : count;
+}
+
+static ssize_t bcm43xx_attr_phymode_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct bcm43xx_private *bcm = dev_to_bcm(dev);
+	ssize_t count = 0;
+
+	bcm43xx_lock_noirq(bcm);
+	switch (bcm43xx_current_phy(bcm)->type) {
+	case BCM43xx_PHYTYPE_A:
+		snprintf(buf, PAGE_SIZE, "A");
+		break;
+	case BCM43xx_PHYTYPE_B:
+		snprintf(buf, PAGE_SIZE, "B");
+		break;
+	case BCM43xx_PHYTYPE_G:
+		snprintf(buf, PAGE_SIZE, "G");
+		break;
+	default:
+		assert(0);
+	}
+	bcm43xx_unlock_noirq(bcm);
+
+	return count;
+}
+
+static DEVICE_ATTR(phymode, 0644,
+		   bcm43xx_attr_phymode_show,
+		   bcm43xx_attr_phymode_store);
+
 int bcm43xx_sysfs_register(struct bcm43xx_private *bcm)
 {
 	struct device *dev = &bcm->pci_dev->dev;
@@ -315,9 +379,14 @@
 	err = device_create_file(dev, &dev_attr_shortpreamble);
 	if (err)
 		goto err_remove_interfmode;
+	err = device_create_file(dev, &dev_attr_phymode);
+	if (err)
+		goto err_remove_shortpreamble;
 
 out:
 	return err;
+err_remove_shortpreamble:
+	device_remove_file(dev, &dev_attr_shortpreamble);
 err_remove_interfmode:
 	device_remove_file(dev, &dev_attr_interference);
 err_remove_sprom:
@@ -329,6 +398,7 @@
 {
 	struct device *dev = &bcm->pci_dev->dev;
 
+	device_remove_file(dev, &dev_attr_phymode);
 	device_remove_file(dev, &dev_attr_shortpreamble);
 	device_remove_file(dev, &dev_attr_interference);
 	device_remove_file(dev, &dev_attr_sprom);

-- 
Greetings Michael.