[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2131 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/radio.c b/drivers/net/wireless/b43legacy/radio.c
new file mode 100644
index 0000000..2a11ee6
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/radio.c
@@ -0,0 +1,2131 @@
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <st3@riseup.net>
+		     Michael Buesch <mbuesch@freenet.de>
+		     Danny van Dyk <kugelfang@gentoo.org>
+		     Andreas Jaggi <andreas.jaggi@waterwave.ch>
+  Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
+
+  Some parts of the code in this file are derived from the ipw2200
+  driver  Copyright(c) 2003 - 2004 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include <linux/delay.h>
+
+#include "b43legacy.h"
+#include "main.h"
+#include "phy.h"
+#include "radio.h"
+#include "ilt.h"
+
+
+/* Table for b43legacy_radio_calibrationvalue() */
+static const u16 rcc_table[16] = {
+	0x0002, 0x0003, 0x0001, 0x000F,
+	0x0006, 0x0007, 0x0005, 0x000F,
+	0x000A, 0x000B, 0x0009, 0x000F,
+	0x000E, 0x000F, 0x000D, 0x000F,
+};
+
+/* Reverse the bits of a 4bit value.
+ * Example:  1101 is flipped 1011
+ */
+static u16 flip_4bit(u16 value)
+{
+	u16 flipped = 0x0000;
+
+	B43legacy_BUG_ON(!((value & ~0x000F) == 0x0000));
+
+	flipped |= (value & 0x0001) << 3;
+	flipped |= (value & 0x0002) << 1;
+	flipped |= (value & 0x0004) >> 1;
+	flipped |= (value & 0x0008) >> 3;
+
+	return flipped;
+}
+
+/* Get the freq, as it has to be written to the device. */
+static inline
+u16 channel2freq_bg(u8 channel)
+{
+	/* Frequencies are given as frequencies_bg[index] + 2.4GHz
+	 * Starting with channel 1
+	 */
+	static const u16 frequencies_bg[14] = {
+		12, 17, 22, 27,
+		32, 37, 42, 47,
+		52, 57, 62, 67,
+		72, 84,
+	};
+
+	if (unlikely(channel < 1 || channel > 14)) {
+		printk(KERN_INFO "b43legacy: Channel %d is out of range\n",
+				  channel);
+		dump_stack();
+		return 2412;
+	}
+
+	return frequencies_bg[channel - 1];
+}
+
+void b43legacy_radio_lock(struct b43legacy_wldev *dev)
+{
+	u32 status;
+
+	status = b43legacy_read32(dev, B43legacy_MMIO_STATUS_BITFIELD);
+	status |= B43legacy_SBF_RADIOREG_LOCK;
+	b43legacy_write32(dev, B43legacy_MMIO_STATUS_BITFIELD, status);
+	mmiowb();
+	udelay(10);
+}
+
+void b43legacy_radio_unlock(struct b43legacy_wldev *dev)
+{
+	u32 status;
+
+	b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); /* dummy read */
+	status = b43legacy_read32(dev, B43legacy_MMIO_STATUS_BITFIELD);
+	status &= ~B43legacy_SBF_RADIOREG_LOCK;
+	b43legacy_write32(dev, B43legacy_MMIO_STATUS_BITFIELD, status);
+	mmiowb();
+}
+
+u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+		if (phy->radio_ver == 0x2053) {
+			if (offset < 0x70)
+				offset += 0x80;
+			else if (offset < 0x80)
+				offset += 0x70;
+		} else if (phy->radio_ver == 0x2050)
+			offset |= 0x80;
+		else
+			B43legacy_WARN_ON(1);
+		break;
+	case B43legacy_PHYTYPE_G:
+		offset |= 0x80;
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+
+	b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset);
+	return b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
+}
+
+void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val)
+{
+	b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset);
+	mmiowb();
+	b43legacy_write16(dev, B43legacy_MMIO_RADIO_DATA_LOW, val);
+}
+
+static void b43legacy_set_all_gains(struct b43legacy_wldev *dev,
+				  s16 first, s16 second, s16 third)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 i;
+	u16 start = 0x08;
+	u16 end = 0x18;
+	u16 offset = 0x0400;
+	u16 tmp;
+
+	if (phy->rev <= 1) {
+		offset = 0x5000;
+		start = 0x10;
+		end = 0x20;
+	}
+
+	for (i = 0; i < 4; i++)
+		b43legacy_ilt_write(dev, offset + i, first);
+
+	for (i = start; i < end; i++)
+		b43legacy_ilt_write(dev, offset + i, second);
+
+	if (third != -1) {
+		tmp = ((u16)third << 14) | ((u16)third << 6);
+		b43legacy_phy_write(dev, 0x04A0,
+				    (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF)
+				    | tmp);
+		b43legacy_phy_write(dev, 0x04A1,
+				    (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF)
+				    | tmp);
+		b43legacy_phy_write(dev, 0x04A2,
+				    (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF)
+				    | tmp);
+	}
+	b43legacy_dummy_transmission(dev);
+}
+
+static void b43legacy_set_original_gains(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 i;
+	u16 tmp;
+	u16 offset = 0x0400;
+	u16 start = 0x0008;
+	u16 end = 0x0018;
+
+	if (phy->rev <= 1) {
+		offset = 0x5000;
+		start = 0x0010;
+		end = 0x0020;
+	}
+
+	for (i = 0; i < 4; i++) {
+		tmp = (i & 0xFFFC);
+		tmp |= (i & 0x0001) << 1;
+		tmp |= (i & 0x0002) >> 1;
+
+		b43legacy_ilt_write(dev, offset + i, tmp);
+	}
+
+	for (i = start; i < end; i++)
+		b43legacy_ilt_write(dev, offset + i, i - start);
+
+	b43legacy_phy_write(dev, 0x04A0,
+			    (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF)
+			    | 0x4040);
+	b43legacy_phy_write(dev, 0x04A1,
+			    (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF)
+			    | 0x4040);
+	b43legacy_phy_write(dev, 0x04A2,
+			    (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF)
+			    | 0x4000);
+	b43legacy_dummy_transmission(dev);
+}
+
+/* Synthetic PU workaround */
+static void b43legacy_synth_pu_workaround(struct b43legacy_wldev *dev,
+					  u8 channel)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	might_sleep();
+
+	if (phy->radio_ver != 0x2050 || phy->radio_rev >= 6)
+		/* We do not need the workaround. */
+		return;
+
+	if (channel <= 10)
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL,
+				  channel2freq_bg(channel + 4));
+	else
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL,
+				  channel2freq_bg(channel));
+	msleep(1);
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL,
+			  channel2freq_bg(channel));
+}
+
+u8 b43legacy_radio_aci_detect(struct b43legacy_wldev *dev, u8 channel)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u8 ret = 0;
+	u16 saved;
+	u16 rssi;
+	u16 temp;
+	int i;
+	int j = 0;
+
+	saved = b43legacy_phy_read(dev, 0x0403);
+	b43legacy_radio_selectchannel(dev, channel, 0);
+	b43legacy_phy_write(dev, 0x0403, (saved & 0xFFF8) | 5);
+	if (phy->aci_hw_rssi)
+		rssi = b43legacy_phy_read(dev, 0x048A) & 0x3F;
+	else
+		rssi = saved & 0x3F;
+	/* clamp temp to signed 5bit */
+	if (rssi > 32)
+		rssi -= 64;
+	for (i = 0; i < 100; i++) {
+		temp = (b43legacy_phy_read(dev, 0x047F) >> 8) & 0x3F;
+		if (temp > 32)
+			temp -= 64;
+		if (temp < rssi)
+			j++;
+		if (j >= 20)
+			ret = 1;
+	}
+	b43legacy_phy_write(dev, 0x0403, saved);
+
+	return ret;
+}
+
+u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u8 ret[13];
+	unsigned int channel = phy->channel;
+	unsigned int i;
+	unsigned int j;
+	unsigned int start;
+	unsigned int end;
+	unsigned long phylock_flags;
+
+	if (!((phy->type == B43legacy_PHYTYPE_G) && (phy->rev > 0)))
+		return 0;
+
+	b43legacy_phy_lock(dev, phylock_flags);
+	b43legacy_radio_lock(dev);
+	b43legacy_phy_write(dev, 0x0802,
+			    b43legacy_phy_read(dev, 0x0802) & 0xFFFC);
+	b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+			    b43legacy_phy_read(dev, B43legacy_PHY_G_CRS)
+			    & 0x7FFF);
+	b43legacy_set_all_gains(dev, 3, 8, 1);
+
+	start = (channel - 5 > 0) ? channel - 5 : 1;
+	end = (channel + 5 < 14) ? channel + 5 : 13;
+
+	for (i = start; i <= end; i++) {
+		if (abs(channel - i) > 2)
+			ret[i-1] = b43legacy_radio_aci_detect(dev, i);
+	}
+	b43legacy_radio_selectchannel(dev, channel, 0);
+	b43legacy_phy_write(dev, 0x0802,
+			    (b43legacy_phy_read(dev, 0x0802) & 0xFFFC)
+			    | 0x0003);
+	b43legacy_phy_write(dev, 0x0403,
+			    b43legacy_phy_read(dev, 0x0403) & 0xFFF8);
+	b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+			    b43legacy_phy_read(dev, B43legacy_PHY_G_CRS)
+			    | 0x8000);
+	b43legacy_set_original_gains(dev);
+	for (i = 0; i < 13; i++) {
+		if (!ret[i])
+			continue;
+		end = (i + 5 < 13) ? i + 5 : 13;
+		for (j = i; j < end; j++)
+			ret[j] = 1;
+	}
+	b43legacy_radio_unlock(dev);
+	b43legacy_phy_unlock(dev, phylock_flags);
+
+	return ret[channel - 1];
+}
+
+/* http://bcm-specs.sipsolutions.net/NRSSILookupTable */
+void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val)
+{
+	b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset);
+	mmiowb();
+	b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val);
+}
+
+/* http://bcm-specs.sipsolutions.net/NRSSILookupTable */
+s16 b43legacy_nrssi_hw_read(struct b43legacy_wldev *dev, u16 offset)
+{
+	u16 val;
+
+	b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset);
+	val = b43legacy_phy_read(dev, B43legacy_PHY_NRSSILT_DATA);
+
+	return (s16)val;
+}
+
+/* http://bcm-specs.sipsolutions.net/NRSSILookupTable */
+void b43legacy_nrssi_hw_update(struct b43legacy_wldev *dev, u16 val)
+{
+	u16 i;
+	s16 tmp;
+
+	for (i = 0; i < 64; i++) {
+		tmp = b43legacy_nrssi_hw_read(dev, i);
+		tmp -= val;
+		tmp = limit_value(tmp, -32, 31);
+		b43legacy_nrssi_hw_write(dev, i, tmp);
+	}
+}
+
+/* http://bcm-specs.sipsolutions.net/NRSSILookupTable */
+void b43legacy_nrssi_mem_update(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s16 i;
+	s16 delta;
+	s32 tmp;
+
+	delta = 0x1F - phy->nrssi[0];
+	for (i = 0; i < 64; i++) {
+		tmp = (i - delta) * phy->nrssislope;
+		tmp /= 0x10000;
+		tmp += 0x3A;
+		tmp = limit_value(tmp, 0, 0x3F);
+		phy->nrssi_lt[i] = tmp;
+	}
+}
+
+static void b43legacy_calc_nrssi_offset(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 backup[20] = { 0 };
+	s16 v47F;
+	u16 i;
+	u16 saved = 0xFFFF;
+
+	backup[0] = b43legacy_phy_read(dev, 0x0001);
+	backup[1] = b43legacy_phy_read(dev, 0x0811);
+	backup[2] = b43legacy_phy_read(dev, 0x0812);
+	backup[3] = b43legacy_phy_read(dev, 0x0814);
+	backup[4] = b43legacy_phy_read(dev, 0x0815);
+	backup[5] = b43legacy_phy_read(dev, 0x005A);
+	backup[6] = b43legacy_phy_read(dev, 0x0059);
+	backup[7] = b43legacy_phy_read(dev, 0x0058);
+	backup[8] = b43legacy_phy_read(dev, 0x000A);
+	backup[9] = b43legacy_phy_read(dev, 0x0003);
+	backup[10] = b43legacy_radio_read16(dev, 0x007A);
+	backup[11] = b43legacy_radio_read16(dev, 0x0043);
+
+	b43legacy_phy_write(dev, 0x0429,
+			    b43legacy_phy_read(dev, 0x0429) & 0x7FFF);
+	b43legacy_phy_write(dev, 0x0001,
+			    (b43legacy_phy_read(dev, 0x0001) & 0x3FFF)
+			    | 0x4000);
+	b43legacy_phy_write(dev, 0x0811,
+			    b43legacy_phy_read(dev, 0x0811) | 0x000C);
+	b43legacy_phy_write(dev, 0x0812,
+			    (b43legacy_phy_read(dev, 0x0812) & 0xFFF3)
+			    | 0x0004);
+	b43legacy_phy_write(dev, 0x0802,
+			    b43legacy_phy_read(dev, 0x0802) & ~(0x1 | 0x2));
+	if (phy->rev >= 6) {
+		backup[12] = b43legacy_phy_read(dev, 0x002E);
+		backup[13] = b43legacy_phy_read(dev, 0x002F);
+		backup[14] = b43legacy_phy_read(dev, 0x080F);
+		backup[15] = b43legacy_phy_read(dev, 0x0810);
+		backup[16] = b43legacy_phy_read(dev, 0x0801);
+		backup[17] = b43legacy_phy_read(dev, 0x0060);
+		backup[18] = b43legacy_phy_read(dev, 0x0014);
+		backup[19] = b43legacy_phy_read(dev, 0x0478);
+
+		b43legacy_phy_write(dev, 0x002E, 0);
+		b43legacy_phy_write(dev, 0x002F, 0);
+		b43legacy_phy_write(dev, 0x080F, 0);
+		b43legacy_phy_write(dev, 0x0810, 0);
+		b43legacy_phy_write(dev, 0x0478,
+				    b43legacy_phy_read(dev, 0x0478) | 0x0100);
+		b43legacy_phy_write(dev, 0x0801,
+				    b43legacy_phy_read(dev, 0x0801) | 0x0040);
+		b43legacy_phy_write(dev, 0x0060,
+				    b43legacy_phy_read(dev, 0x0060) | 0x0040);
+		b43legacy_phy_write(dev, 0x0014,
+				    b43legacy_phy_read(dev, 0x0014) | 0x0200);
+	}
+	b43legacy_radio_write16(dev, 0x007A,
+				b43legacy_radio_read16(dev, 0x007A) | 0x0070);
+	b43legacy_radio_write16(dev, 0x007A,
+				b43legacy_radio_read16(dev, 0x007A) | 0x0080);
+	udelay(30);
+
+	v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F);
+	if (v47F >= 0x20)
+		v47F -= 0x40;
+	if (v47F == 31) {
+		for (i = 7; i >= 4; i--) {
+			b43legacy_radio_write16(dev, 0x007B, i);
+			udelay(20);
+			v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8)
+							 & 0x003F);
+			if (v47F >= 0x20)
+				v47F -= 0x40;
+			if (v47F < 31 && saved == 0xFFFF)
+				saved = i;
+		}
+		if (saved == 0xFFFF)
+			saved = 4;
+	} else {
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					& 0x007F);
+		b43legacy_phy_write(dev, 0x0814,
+				    b43legacy_phy_read(dev, 0x0814) | 0x0001);
+		b43legacy_phy_write(dev, 0x0815,
+				    b43legacy_phy_read(dev, 0x0815) & 0xFFFE);
+		b43legacy_phy_write(dev, 0x0811,
+				    b43legacy_phy_read(dev, 0x0811) | 0x000C);
+		b43legacy_phy_write(dev, 0x0812,
+				    b43legacy_phy_read(dev, 0x0812) | 0x000C);
+		b43legacy_phy_write(dev, 0x0811,
+				    b43legacy_phy_read(dev, 0x0811) | 0x0030);
+		b43legacy_phy_write(dev, 0x0812,
+				    b43legacy_phy_read(dev, 0x0812) | 0x0030);
+		b43legacy_phy_write(dev, 0x005A, 0x0480);
+		b43legacy_phy_write(dev, 0x0059, 0x0810);
+		b43legacy_phy_write(dev, 0x0058, 0x000D);
+		if (phy->analog == 0)
+			b43legacy_phy_write(dev, 0x0003, 0x0122);
+		else
+			b43legacy_phy_write(dev, 0x000A,
+					    b43legacy_phy_read(dev, 0x000A)
+					    | 0x2000);
+		b43legacy_phy_write(dev, 0x0814,
+				    b43legacy_phy_read(dev, 0x0814) | 0x0004);
+		b43legacy_phy_write(dev, 0x0815,
+				    b43legacy_phy_read(dev, 0x0815) & 0xFFFB);
+		b43legacy_phy_write(dev, 0x0003,
+				    (b43legacy_phy_read(dev, 0x0003) & 0xFF9F)
+				    | 0x0040);
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x000F);
+		b43legacy_set_all_gains(dev, 3, 0, 1);
+		b43legacy_radio_write16(dev, 0x0043,
+					(b43legacy_radio_read16(dev, 0x0043)
+					& 0x00F0) | 0x000F);
+		udelay(30);
+		v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F);
+		if (v47F >= 0x20)
+			v47F -= 0x40;
+		if (v47F == -32) {
+			for (i = 0; i < 4; i++) {
+				b43legacy_radio_write16(dev, 0x007B, i);
+				udelay(20);
+				v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >>
+								 8) & 0x003F);
+				if (v47F >= 0x20)
+					v47F -= 0x40;
+				if (v47F > -31 && saved == 0xFFFF)
+					saved = i;
+			}
+			if (saved == 0xFFFF)
+				saved = 3;
+		} else
+			saved = 0;
+	}
+	b43legacy_radio_write16(dev, 0x007B, saved);
+
+	if (phy->rev >= 6) {
+		b43legacy_phy_write(dev, 0x002E, backup[12]);
+		b43legacy_phy_write(dev, 0x002F, backup[13]);
+		b43legacy_phy_write(dev, 0x080F, backup[14]);
+		b43legacy_phy_write(dev, 0x0810, backup[15]);
+	}
+	b43legacy_phy_write(dev, 0x0814, backup[3]);
+	b43legacy_phy_write(dev, 0x0815, backup[4]);
+	b43legacy_phy_write(dev, 0x005A, backup[5]);
+	b43legacy_phy_write(dev, 0x0059, backup[6]);
+	b43legacy_phy_write(dev, 0x0058, backup[7]);
+	b43legacy_phy_write(dev, 0x000A, backup[8]);
+	b43legacy_phy_write(dev, 0x0003, backup[9]);
+	b43legacy_radio_write16(dev, 0x0043, backup[11]);
+	b43legacy_radio_write16(dev, 0x007A, backup[10]);
+	b43legacy_phy_write(dev, 0x0802,
+			    b43legacy_phy_read(dev, 0x0802) | 0x1 | 0x2);
+	b43legacy_phy_write(dev, 0x0429,
+			    b43legacy_phy_read(dev, 0x0429) | 0x8000);
+	b43legacy_set_original_gains(dev);
+	if (phy->rev >= 6) {
+		b43legacy_phy_write(dev, 0x0801, backup[16]);
+		b43legacy_phy_write(dev, 0x0060, backup[17]);
+		b43legacy_phy_write(dev, 0x0014, backup[18]);
+		b43legacy_phy_write(dev, 0x0478, backup[19]);
+	}
+	b43legacy_phy_write(dev, 0x0001, backup[0]);
+	b43legacy_phy_write(dev, 0x0812, backup[2]);
+	b43legacy_phy_write(dev, 0x0811, backup[1]);
+}
+
+void b43legacy_calc_nrssi_slope(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 backup[18] = { 0 };
+	u16 tmp;
+	s16 nrssi0;
+	s16 nrssi1;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+		backup[0] = b43legacy_radio_read16(dev, 0x007A);
+		backup[1] = b43legacy_radio_read16(dev, 0x0052);
+		backup[2] = b43legacy_radio_read16(dev, 0x0043);
+		backup[3] = b43legacy_phy_read(dev, 0x0030);
+		backup[4] = b43legacy_phy_read(dev, 0x0026);
+		backup[5] = b43legacy_phy_read(dev, 0x0015);
+		backup[6] = b43legacy_phy_read(dev, 0x002A);
+		backup[7] = b43legacy_phy_read(dev, 0x0020);
+		backup[8] = b43legacy_phy_read(dev, 0x005A);
+		backup[9] = b43legacy_phy_read(dev, 0x0059);
+		backup[10] = b43legacy_phy_read(dev, 0x0058);
+		backup[11] = b43legacy_read16(dev, 0x03E2);
+		backup[12] = b43legacy_read16(dev, 0x03E6);
+		backup[13] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT);
+
+		tmp  = b43legacy_radio_read16(dev, 0x007A);
+		tmp &= (phy->rev >= 5) ? 0x007F : 0x000F;
+		b43legacy_radio_write16(dev, 0x007A, tmp);
+		b43legacy_phy_write(dev, 0x0030, 0x00FF);
+		b43legacy_write16(dev, 0x03EC, 0x7F7F);
+		b43legacy_phy_write(dev, 0x0026, 0x0000);
+		b43legacy_phy_write(dev, 0x0015,
+				    b43legacy_phy_read(dev, 0x0015) | 0x0020);
+		b43legacy_phy_write(dev, 0x002A, 0x08A3);
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x0080);
+
+		nrssi0 = (s16)b43legacy_phy_read(dev, 0x0027);
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					& 0x007F);
+		if (phy->analog >= 2)
+			b43legacy_write16(dev, 0x03E6, 0x0040);
+		else if (phy->analog == 0)
+			b43legacy_write16(dev, 0x03E6, 0x0122);
+		else
+			b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT,
+					  b43legacy_read16(dev,
+					  B43legacy_MMIO_CHANNEL_EXT) & 0x2000);
+		b43legacy_phy_write(dev, 0x0020, 0x3F3F);
+		b43legacy_phy_write(dev, 0x0015, 0xF330);
+		b43legacy_radio_write16(dev, 0x005A, 0x0060);
+		b43legacy_radio_write16(dev, 0x0043,
+					b43legacy_radio_read16(dev, 0x0043)
+					& 0x00F0);
+		b43legacy_phy_write(dev, 0x005A, 0x0480);
+		b43legacy_phy_write(dev, 0x0059, 0x0810);
+		b43legacy_phy_write(dev, 0x0058, 0x000D);
+		udelay(20);
+
+		nrssi1 = (s16)b43legacy_phy_read(dev, 0x0027);
+		b43legacy_phy_write(dev, 0x0030, backup[3]);
+		b43legacy_radio_write16(dev, 0x007A, backup[0]);
+		b43legacy_write16(dev, 0x03E2, backup[11]);
+		b43legacy_phy_write(dev, 0x0026, backup[4]);
+		b43legacy_phy_write(dev, 0x0015, backup[5]);
+		b43legacy_phy_write(dev, 0x002A, backup[6]);
+		b43legacy_synth_pu_workaround(dev, phy->channel);
+		if (phy->analog != 0)
+			b43legacy_write16(dev, 0x03F4, backup[13]);
+
+		b43legacy_phy_write(dev, 0x0020, backup[7]);
+		b43legacy_phy_write(dev, 0x005A, backup[8]);
+		b43legacy_phy_write(dev, 0x0059, backup[9]);
+		b43legacy_phy_write(dev, 0x0058, backup[10]);
+		b43legacy_radio_write16(dev, 0x0052, backup[1]);
+		b43legacy_radio_write16(dev, 0x0043, backup[2]);
+
+		if (nrssi0 == nrssi1)
+			phy->nrssislope = 0x00010000;
+		else
+			phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1);
+
+		if (nrssi0 <= -4) {
+			phy->nrssi[0] = nrssi0;
+			phy->nrssi[1] = nrssi1;
+		}
+		break;
+	case B43legacy_PHYTYPE_G:
+		if (phy->radio_rev >= 9)
+			return;
+		if (phy->radio_rev == 8)
+			b43legacy_calc_nrssi_offset(dev);
+
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+				    b43legacy_phy_read(dev, B43legacy_PHY_G_CRS)
+				    & 0x7FFF);
+		b43legacy_phy_write(dev, 0x0802,
+				    b43legacy_phy_read(dev, 0x0802) & 0xFFFC);
+		backup[7] = b43legacy_read16(dev, 0x03E2);
+		b43legacy_write16(dev, 0x03E2,
+				  b43legacy_read16(dev, 0x03E2) | 0x8000);
+		backup[0] = b43legacy_radio_read16(dev, 0x007A);
+		backup[1] = b43legacy_radio_read16(dev, 0x0052);
+		backup[2] = b43legacy_radio_read16(dev, 0x0043);
+		backup[3] = b43legacy_phy_read(dev, 0x0015);
+		backup[4] = b43legacy_phy_read(dev, 0x005A);
+		backup[5] = b43legacy_phy_read(dev, 0x0059);
+		backup[6] = b43legacy_phy_read(dev, 0x0058);
+		backup[8] = b43legacy_read16(dev, 0x03E6);
+		backup[9] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT);
+		if (phy->rev >= 3) {
+			backup[10] = b43legacy_phy_read(dev, 0x002E);
+			backup[11] = b43legacy_phy_read(dev, 0x002F);
+			backup[12] = b43legacy_phy_read(dev, 0x080F);
+			backup[13] = b43legacy_phy_read(dev,
+						B43legacy_PHY_G_LO_CONTROL);
+			backup[14] = b43legacy_phy_read(dev, 0x0801);
+			backup[15] = b43legacy_phy_read(dev, 0x0060);
+			backup[16] = b43legacy_phy_read(dev, 0x0014);
+			backup[17] = b43legacy_phy_read(dev, 0x0478);
+			b43legacy_phy_write(dev, 0x002E, 0);
+			b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, 0);
+			switch (phy->rev) {
+			case 4: case 6: case 7:
+				b43legacy_phy_write(dev, 0x0478,
+						    b43legacy_phy_read(dev,
+						    0x0478) | 0x0100);
+				b43legacy_phy_write(dev, 0x0801,
+						    b43legacy_phy_read(dev,
+						    0x0801) | 0x0040);
+				break;
+			case 3: case 5:
+				b43legacy_phy_write(dev, 0x0801,
+						    b43legacy_phy_read(dev,
+						    0x0801) & 0xFFBF);
+				break;
+			}
+			b43legacy_phy_write(dev, 0x0060,
+					    b43legacy_phy_read(dev, 0x0060)
+					    | 0x0040);
+			b43legacy_phy_write(dev, 0x0014,
+					    b43legacy_phy_read(dev, 0x0014)
+					    | 0x0200);
+		}
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x0070);
+		b43legacy_set_all_gains(dev, 0, 8, 0);
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					& 0x00F7);
+		if (phy->rev >= 2) {
+			b43legacy_phy_write(dev, 0x0811,
+					    (b43legacy_phy_read(dev, 0x0811)
+					    & 0xFFCF) | 0x0030);
+			b43legacy_phy_write(dev, 0x0812,
+					    (b43legacy_phy_read(dev, 0x0812)
+					    & 0xFFCF) | 0x0010);
+		}
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x0080);
+		udelay(20);
+
+		nrssi0 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F);
+		if (nrssi0 >= 0x0020)
+			nrssi0 -= 0x0040;
+
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					& 0x007F);
+		if (phy->analog >= 2)
+			b43legacy_phy_write(dev, 0x0003,
+					    (b43legacy_phy_read(dev, 0x0003)
+					    & 0xFF9F) | 0x0040);
+
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT,
+				  b43legacy_read16(dev,
+				  B43legacy_MMIO_CHANNEL_EXT) | 0x2000);
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x000F);
+		b43legacy_phy_write(dev, 0x0015, 0xF330);
+		if (phy->rev >= 2) {
+			b43legacy_phy_write(dev, 0x0812,
+					    (b43legacy_phy_read(dev, 0x0812)
+					    & 0xFFCF) | 0x0020);
+			b43legacy_phy_write(dev, 0x0811,
+					    (b43legacy_phy_read(dev, 0x0811)
+					    & 0xFFCF) | 0x0020);
+		}
+
+		b43legacy_set_all_gains(dev, 3, 0, 1);
+		if (phy->radio_rev == 8)
+			b43legacy_radio_write16(dev, 0x0043, 0x001F);
+		else {
+			tmp = b43legacy_radio_read16(dev, 0x0052) & 0xFF0F;
+			b43legacy_radio_write16(dev, 0x0052, tmp | 0x0060);
+			tmp = b43legacy_radio_read16(dev, 0x0043) & 0xFFF0;
+			b43legacy_radio_write16(dev, 0x0043, tmp | 0x0009);
+		}
+		b43legacy_phy_write(dev, 0x005A, 0x0480);
+		b43legacy_phy_write(dev, 0x0059, 0x0810);
+		b43legacy_phy_write(dev, 0x0058, 0x000D);
+		udelay(20);
+		nrssi1 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F);
+		if (nrssi1 >= 0x0020)
+			nrssi1 -= 0x0040;
+		if (nrssi0 == nrssi1)
+			phy->nrssislope = 0x00010000;
+		else
+			phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1);
+		if (nrssi0 >= -4) {
+			phy->nrssi[0] = nrssi1;
+			phy->nrssi[1] = nrssi0;
+		}
+		if (phy->rev >= 3) {
+			b43legacy_phy_write(dev, 0x002E, backup[10]);
+			b43legacy_phy_write(dev, 0x002F, backup[11]);
+			b43legacy_phy_write(dev, 0x080F, backup[12]);
+			b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL,
+					    backup[13]);
+		}
+		if (phy->rev >= 2) {
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_phy_read(dev, 0x0812)
+					    & 0xFFCF);
+			b43legacy_phy_write(dev, 0x0811,
+					    b43legacy_phy_read(dev, 0x0811)
+					    & 0xFFCF);
+		}
+
+		b43legacy_radio_write16(dev, 0x007A, backup[0]);
+		b43legacy_radio_write16(dev, 0x0052, backup[1]);
+		b43legacy_radio_write16(dev, 0x0043, backup[2]);
+		b43legacy_write16(dev, 0x03E2, backup[7]);
+		b43legacy_write16(dev, 0x03E6, backup[8]);
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[9]);
+		b43legacy_phy_write(dev, 0x0015, backup[3]);
+		b43legacy_phy_write(dev, 0x005A, backup[4]);
+		b43legacy_phy_write(dev, 0x0059, backup[5]);
+		b43legacy_phy_write(dev, 0x0058, backup[6]);
+		b43legacy_synth_pu_workaround(dev, phy->channel);
+		b43legacy_phy_write(dev, 0x0802,
+				    b43legacy_phy_read(dev, 0x0802) | 0x0003);
+		b43legacy_set_original_gains(dev);
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+				    b43legacy_phy_read(dev, B43legacy_PHY_G_CRS)
+				    | 0x8000);
+		if (phy->rev >= 3) {
+			b43legacy_phy_write(dev, 0x0801, backup[14]);
+			b43legacy_phy_write(dev, 0x0060, backup[15]);
+			b43legacy_phy_write(dev, 0x0014, backup[16]);
+			b43legacy_phy_write(dev, 0x0478, backup[17]);
+		}
+		b43legacy_nrssi_mem_update(dev);
+		b43legacy_calc_nrssi_threshold(dev);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+}
+
+void b43legacy_calc_nrssi_threshold(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s32 threshold;
+	s32 a;
+	s32 b;
+	s16 tmp16;
+	u16 tmp_u16;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B: {
+		if (phy->radio_ver != 0x2050)
+			return;
+		if (!(dev->dev->bus->sprom.r1.boardflags_lo &
+		    B43legacy_BFL_RSSI))
+			return;
+
+		if (phy->radio_rev >= 6) {
+			threshold = (phy->nrssi[1] - phy->nrssi[0]) * 32;
+			threshold += 20 * (phy->nrssi[0] + 1);
+			threshold /= 40;
+		} else
+			threshold = phy->nrssi[1] - 5;
+
+		threshold = limit_value(threshold, 0, 0x3E);
+		b43legacy_phy_read(dev, 0x0020); /* dummy read */
+		b43legacy_phy_write(dev, 0x0020, (((u16)threshold) << 8)
+				    | 0x001C);
+
+		if (phy->radio_rev >= 6) {
+			b43legacy_phy_write(dev, 0x0087, 0x0E0D);
+			b43legacy_phy_write(dev, 0x0086, 0x0C0B);
+			b43legacy_phy_write(dev, 0x0085, 0x0A09);
+			b43legacy_phy_write(dev, 0x0084, 0x0808);
+			b43legacy_phy_write(dev, 0x0083, 0x0808);
+			b43legacy_phy_write(dev, 0x0082, 0x0604);
+			b43legacy_phy_write(dev, 0x0081, 0x0302);
+			b43legacy_phy_write(dev, 0x0080, 0x0100);
+		}
+		break;
+	}
+	case B43legacy_PHYTYPE_G:
+		if (!phy->gmode ||
+		    !(dev->dev->bus->sprom.r1.boardflags_lo &
+		    B43legacy_BFL_RSSI)) {
+			tmp16 = b43legacy_nrssi_hw_read(dev, 0x20);
+			if (tmp16 >= 0x20)
+				tmp16 -= 0x40;
+			if (tmp16 < 3)
+				b43legacy_phy_write(dev, 0x048A,
+						    (b43legacy_phy_read(dev,
+						    0x048A) & 0xF000) | 0x09EB);
+			else
+				b43legacy_phy_write(dev, 0x048A,
+						    (b43legacy_phy_read(dev,
+						    0x048A) & 0xF000) | 0x0AED);
+		} else {
+			if (phy->interfmode ==
+			    B43legacy_RADIO_INTERFMODE_NONWLAN) {
+				a = 0xE;
+				b = 0xA;
+			} else if (!phy->aci_wlan_automatic &&
+				    phy->aci_enable) {
+				a = 0x13;
+				b = 0x12;
+			} else {
+				a = 0xE;
+				b = 0x11;
+			}
+
+			a = a * (phy->nrssi[1] - phy->nrssi[0]);
+			a += (phy->nrssi[0] << 6);
+			if (a < 32)
+				a += 31;
+			else
+				a += 32;
+			a = a >> 6;
+			a = limit_value(a, -31, 31);
+
+			b = b * (phy->nrssi[1] - phy->nrssi[0]);
+			b += (phy->nrssi[0] << 6);
+			if (b < 32)
+				b += 31;
+			else
+				b += 32;
+			b = b >> 6;
+			b = limit_value(b, -31, 31);
+
+			tmp_u16 = b43legacy_phy_read(dev, 0x048A) & 0xF000;
+			tmp_u16 |= ((u32)b & 0x0000003F);
+			tmp_u16 |= (((u32)a & 0x0000003F) << 6);
+			b43legacy_phy_write(dev, 0x048A, tmp_u16);
+		}
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+}
+
+/* Stack implementation to save/restore values from the
+ * interference mitigation code.
+ * It is save to restore values in random order.
+ */
+static void _stack_save(u32 *_stackptr, size_t *stackidx,
+			u8 id, u16 offset, u16 value)
+{
+	u32 *stackptr = &(_stackptr[*stackidx]);
+
+	B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000));
+	B43legacy_WARN_ON(!((id & 0xF8) == 0x00));
+	*stackptr = offset;
+	*stackptr |= ((u32)id) << 13;
+	*stackptr |= ((u32)value) << 16;
+	(*stackidx)++;
+	B43legacy_WARN_ON(!(*stackidx < B43legacy_INTERFSTACK_SIZE));
+}
+
+static u16 _stack_restore(u32 *stackptr,
+			  u8 id, u16 offset)
+{
+	size_t i;
+
+	B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000));
+	B43legacy_WARN_ON(!((id & 0xF8) == 0x00));
+	for (i = 0; i < B43legacy_INTERFSTACK_SIZE; i++, stackptr++) {
+		if ((*stackptr & 0x00001FFF) != offset)
+			continue;
+		if (((*stackptr & 0x00007000) >> 13) != id)
+			continue;
+		return ((*stackptr & 0xFFFF0000) >> 16);
+	}
+	B43legacy_BUG_ON(1);
+
+	return 0;
+}
+
+#define phy_stacksave(offset)					\
+	do {							\
+		_stack_save(stack, &stackidx, 0x1, (offset),	\
+			    b43legacy_phy_read(dev, (offset)));	\
+	} while (0)
+#define phy_stackrestore(offset)				\
+	do {							\
+		b43legacy_phy_write(dev, (offset),		\
+				    _stack_restore(stack, 0x1,	\
+				    (offset)));			\
+	} while (0)
+#define radio_stacksave(offset)						\
+	do {								\
+		_stack_save(stack, &stackidx, 0x2, (offset),		\
+			    b43legacy_radio_read16(dev, (offset)));	\
+	} while (0)
+#define radio_stackrestore(offset)					\
+	do {								\
+		b43legacy_radio_write16(dev, (offset),			\
+					_stack_restore(stack, 0x2,	\
+					(offset)));			\
+	} while (0)
+#define ilt_stacksave(offset)					\
+	do {							\
+		_stack_save(stack, &stackidx, 0x3, (offset),	\
+			    b43legacy_ilt_read(dev, (offset)));	\
+	} while (0)
+#define ilt_stackrestore(offset)				\
+	do {							\
+		b43legacy_ilt_write(dev, (offset),		\
+				  _stack_restore(stack, 0x3,	\
+						 (offset)));	\
+	} while (0)
+
+static void
+b43legacy_radio_interference_mitigation_enable(struct b43legacy_wldev *dev,
+					       int mode)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 tmp;
+	u16 flipped;
+	u32 tmp32;
+	size_t stackidx = 0;
+	u32 *stack = phy->interfstack;
+
+	switch (mode) {
+	case B43legacy_RADIO_INTERFMODE_NONWLAN:
+		if (phy->rev != 1) {
+			b43legacy_phy_write(dev, 0x042B,
+					    b43legacy_phy_read(dev, 0x042B)
+					    | 0x0800);
+			b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+					    b43legacy_phy_read(dev,
+					    B43legacy_PHY_G_CRS) & ~0x4000);
+			break;
+		}
+		radio_stacksave(0x0078);
+		tmp = (b43legacy_radio_read16(dev, 0x0078) & 0x001E);
+		flipped = flip_4bit(tmp);
+		if (flipped < 10 && flipped >= 8)
+			flipped = 7;
+		else if (flipped >= 10)
+			flipped -= 3;
+		flipped = flip_4bit(flipped);
+		flipped = (flipped << 1) | 0x0020;
+		b43legacy_radio_write16(dev, 0x0078, flipped);
+
+		b43legacy_calc_nrssi_threshold(dev);
+
+		phy_stacksave(0x0406);
+		b43legacy_phy_write(dev, 0x0406, 0x7E28);
+
+		b43legacy_phy_write(dev, 0x042B,
+				    b43legacy_phy_read(dev, 0x042B) | 0x0800);
+		b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD,
+				    b43legacy_phy_read(dev,
+				    B43legacy_PHY_RADIO_BITFIELD) | 0x1000);
+
+		phy_stacksave(0x04A0);
+		b43legacy_phy_write(dev, 0x04A0,
+				    (b43legacy_phy_read(dev, 0x04A0) & 0xC0C0)
+				    | 0x0008);
+		phy_stacksave(0x04A1);
+		b43legacy_phy_write(dev, 0x04A1,
+				    (b43legacy_phy_read(dev, 0x04A1) & 0xC0C0)
+				    | 0x0605);
+		phy_stacksave(0x04A2);
+		b43legacy_phy_write(dev, 0x04A2,
+				    (b43legacy_phy_read(dev, 0x04A2) & 0xC0C0)
+				    | 0x0204);
+		phy_stacksave(0x04A8);
+		b43legacy_phy_write(dev, 0x04A8,
+				    (b43legacy_phy_read(dev, 0x04A8) & 0xC0C0)
+				    | 0x0803);
+		phy_stacksave(0x04AB);
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB) & 0xC0C0)
+				    | 0x0605);
+
+		phy_stacksave(0x04A7);
+		b43legacy_phy_write(dev, 0x04A7, 0x0002);
+		phy_stacksave(0x04A3);
+		b43legacy_phy_write(dev, 0x04A3, 0x287A);
+		phy_stacksave(0x04A9);
+		b43legacy_phy_write(dev, 0x04A9, 0x2027);
+		phy_stacksave(0x0493);
+		b43legacy_phy_write(dev, 0x0493, 0x32F5);
+		phy_stacksave(0x04AA);
+		b43legacy_phy_write(dev, 0x04AA, 0x2027);
+		phy_stacksave(0x04AC);
+		b43legacy_phy_write(dev, 0x04AC, 0x32F5);
+		break;
+	case B43legacy_RADIO_INTERFMODE_MANUALWLAN:
+		if (b43legacy_phy_read(dev, 0x0033) & 0x0800)
+			break;
+
+		phy->aci_enable = 1;
+
+		phy_stacksave(B43legacy_PHY_RADIO_BITFIELD);
+		phy_stacksave(B43legacy_PHY_G_CRS);
+		if (phy->rev < 2)
+			phy_stacksave(0x0406);
+		else {
+			phy_stacksave(0x04C0);
+			phy_stacksave(0x04C1);
+		}
+		phy_stacksave(0x0033);
+		phy_stacksave(0x04A7);
+		phy_stacksave(0x04A3);
+		phy_stacksave(0x04A9);
+		phy_stacksave(0x04AA);
+		phy_stacksave(0x04AC);
+		phy_stacksave(0x0493);
+		phy_stacksave(0x04A1);
+		phy_stacksave(0x04A0);
+		phy_stacksave(0x04A2);
+		phy_stacksave(0x048A);
+		phy_stacksave(0x04A8);
+		phy_stacksave(0x04AB);
+		if (phy->rev == 2) {
+			phy_stacksave(0x04AD);
+			phy_stacksave(0x04AE);
+		} else if (phy->rev >= 3) {
+			phy_stacksave(0x04AD);
+			phy_stacksave(0x0415);
+			phy_stacksave(0x0416);
+			phy_stacksave(0x0417);
+			ilt_stacksave(0x1A00 + 0x2);
+			ilt_stacksave(0x1A00 + 0x3);
+		}
+		phy_stacksave(0x042B);
+		phy_stacksave(0x048C);
+
+		b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD,
+				    b43legacy_phy_read(dev,
+				    B43legacy_PHY_RADIO_BITFIELD) & ~0x1000);
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+				    (b43legacy_phy_read(dev,
+				    B43legacy_PHY_G_CRS)
+				    & 0xFFFC) | 0x0002);
+
+		b43legacy_phy_write(dev, 0x0033, 0x0800);
+		b43legacy_phy_write(dev, 0x04A3, 0x2027);
+		b43legacy_phy_write(dev, 0x04A9, 0x1CA8);
+		b43legacy_phy_write(dev, 0x0493, 0x287A);
+		b43legacy_phy_write(dev, 0x04AA, 0x1CA8);
+		b43legacy_phy_write(dev, 0x04AC, 0x287A);
+
+		b43legacy_phy_write(dev, 0x04A0,
+				    (b43legacy_phy_read(dev, 0x04A0)
+				    & 0xFFC0) | 0x001A);
+		b43legacy_phy_write(dev, 0x04A7, 0x000D);
+
+		if (phy->rev < 2)
+			b43legacy_phy_write(dev, 0x0406, 0xFF0D);
+		else if (phy->rev == 2) {
+			b43legacy_phy_write(dev, 0x04C0, 0xFFFF);
+			b43legacy_phy_write(dev, 0x04C1, 0x00A9);
+		} else {
+			b43legacy_phy_write(dev, 0x04C0, 0x00C1);
+			b43legacy_phy_write(dev, 0x04C1, 0x0059);
+		}
+
+		b43legacy_phy_write(dev, 0x04A1,
+				    (b43legacy_phy_read(dev, 0x04A1)
+				    & 0xC0FF) | 0x1800);
+		b43legacy_phy_write(dev, 0x04A1,
+				    (b43legacy_phy_read(dev, 0x04A1)
+				    & 0xFFC0) | 0x0015);
+		b43legacy_phy_write(dev, 0x04A8,
+				    (b43legacy_phy_read(dev, 0x04A8)
+				    & 0xCFFF) | 0x1000);
+		b43legacy_phy_write(dev, 0x04A8,
+				    (b43legacy_phy_read(dev, 0x04A8)
+				    & 0xF0FF) | 0x0A00);
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB)
+				    & 0xCFFF) | 0x1000);
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB)
+				    & 0xF0FF) | 0x0800);
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB)
+				    & 0xFFCF) | 0x0010);
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB)
+				    & 0xFFF0) | 0x0005);
+		b43legacy_phy_write(dev, 0x04A8,
+				    (b43legacy_phy_read(dev, 0x04A8)
+				    & 0xFFCF) | 0x0010);
+		b43legacy_phy_write(dev, 0x04A8,
+				    (b43legacy_phy_read(dev, 0x04A8)
+				    & 0xFFF0) | 0x0006);
+		b43legacy_phy_write(dev, 0x04A2,
+				    (b43legacy_phy_read(dev, 0x04A2)
+				    & 0xF0FF) | 0x0800);
+		b43legacy_phy_write(dev, 0x04A0,
+				    (b43legacy_phy_read(dev, 0x04A0)
+				    & 0xF0FF) | 0x0500);
+		b43legacy_phy_write(dev, 0x04A2,
+				    (b43legacy_phy_read(dev, 0x04A2)
+				    & 0xFFF0) | 0x000B);
+
+		if (phy->rev >= 3) {
+			b43legacy_phy_write(dev, 0x048A,
+					    b43legacy_phy_read(dev, 0x048A)
+					    & ~0x8000);
+			b43legacy_phy_write(dev, 0x0415,
+					    (b43legacy_phy_read(dev, 0x0415)
+					    & 0x8000) | 0x36D8);
+			b43legacy_phy_write(dev, 0x0416,
+					    (b43legacy_phy_read(dev, 0x0416)
+					    & 0x8000) | 0x36D8);
+			b43legacy_phy_write(dev, 0x0417,
+					    (b43legacy_phy_read(dev, 0x0417)
+					    & 0xFE00) | 0x016D);
+		} else {
+			b43legacy_phy_write(dev, 0x048A,
+					    b43legacy_phy_read(dev, 0x048A)
+					    | 0x1000);
+			b43legacy_phy_write(dev, 0x048A,
+					    (b43legacy_phy_read(dev, 0x048A)
+					    & 0x9FFF) | 0x2000);
+			tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED,
+					    B43legacy_UCODEFLAGS_OFFSET);
+			if (!(tmp32 & 0x800)) {
+				tmp32 |= 0x800;
+				b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+					    B43legacy_UCODEFLAGS_OFFSET,
+					    tmp32);
+			}
+		}
+		if (phy->rev >= 2)
+			b43legacy_phy_write(dev, 0x042B,
+					    b43legacy_phy_read(dev, 0x042B)
+					    | 0x0800);
+		b43legacy_phy_write(dev, 0x048C,
+				    (b43legacy_phy_read(dev, 0x048C)
+				    & 0xF0FF) | 0x0200);
+		if (phy->rev == 2) {
+			b43legacy_phy_write(dev, 0x04AE,
+					    (b43legacy_phy_read(dev, 0x04AE)
+					    & 0xFF00) | 0x007F);
+			b43legacy_phy_write(dev, 0x04AD,
+					    (b43legacy_phy_read(dev, 0x04AD)
+					    & 0x00FF) | 0x1300);
+		} else if (phy->rev >= 6) {
+			b43legacy_ilt_write(dev, 0x1A00 + 0x3, 0x007F);
+			b43legacy_ilt_write(dev, 0x1A00 + 0x2, 0x007F);
+			b43legacy_phy_write(dev, 0x04AD,
+					    b43legacy_phy_read(dev, 0x04AD)
+					    & 0x00FF);
+		}
+		b43legacy_calc_nrssi_slope(dev);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+}
+
+static void
+b43legacy_radio_interference_mitigation_disable(struct b43legacy_wldev *dev,
+						int mode)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u32 tmp32;
+	u32 *stack = phy->interfstack;
+
+	switch (mode) {
+	case B43legacy_RADIO_INTERFMODE_NONWLAN:
+		if (phy->rev != 1) {
+			b43legacy_phy_write(dev, 0x042B,
+					    b43legacy_phy_read(dev, 0x042B)
+					    & ~0x0800);
+			b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+					    b43legacy_phy_read(dev,
+					    B43legacy_PHY_G_CRS) | 0x4000);
+			break;
+		}
+		phy_stackrestore(0x0078);
+		b43legacy_calc_nrssi_threshold(dev);
+		phy_stackrestore(0x0406);
+		b43legacy_phy_write(dev, 0x042B,
+				    b43legacy_phy_read(dev, 0x042B) & ~0x0800);
+		if (!dev->bad_frames_preempt)
+			b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD,
+					    b43legacy_phy_read(dev,
+					    B43legacy_PHY_RADIO_BITFIELD)
+					    & ~(1 << 11));
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+				    b43legacy_phy_read(dev, B43legacy_PHY_G_CRS)
+				    | 0x4000);
+		phy_stackrestore(0x04A0);
+		phy_stackrestore(0x04A1);
+		phy_stackrestore(0x04A2);
+		phy_stackrestore(0x04A8);
+		phy_stackrestore(0x04AB);
+		phy_stackrestore(0x04A7);
+		phy_stackrestore(0x04A3);
+		phy_stackrestore(0x04A9);
+		phy_stackrestore(0x0493);
+		phy_stackrestore(0x04AA);
+		phy_stackrestore(0x04AC);
+		break;
+	case B43legacy_RADIO_INTERFMODE_MANUALWLAN:
+		if (!(b43legacy_phy_read(dev, 0x0033) & 0x0800))
+			break;
+
+		phy->aci_enable = 0;
+
+		phy_stackrestore(B43legacy_PHY_RADIO_BITFIELD);
+		phy_stackrestore(B43legacy_PHY_G_CRS);
+		phy_stackrestore(0x0033);
+		phy_stackrestore(0x04A3);
+		phy_stackrestore(0x04A9);
+		phy_stackrestore(0x0493);
+		phy_stackrestore(0x04AA);
+		phy_stackrestore(0x04AC);
+		phy_stackrestore(0x04A0);
+		phy_stackrestore(0x04A7);
+		if (phy->rev >= 2) {
+			phy_stackrestore(0x04C0);
+			phy_stackrestore(0x04C1);
+		} else
+			phy_stackrestore(0x0406);
+		phy_stackrestore(0x04A1);
+		phy_stackrestore(0x04AB);
+		phy_stackrestore(0x04A8);
+		if (phy->rev == 2) {
+			phy_stackrestore(0x04AD);
+			phy_stackrestore(0x04AE);
+		} else if (phy->rev >= 3) {
+			phy_stackrestore(0x04AD);
+			phy_stackrestore(0x0415);
+			phy_stackrestore(0x0416);
+			phy_stackrestore(0x0417);
+			ilt_stackrestore(0x1A00 + 0x2);
+			ilt_stackrestore(0x1A00 + 0x3);
+		}
+		phy_stackrestore(0x04A2);
+		phy_stackrestore(0x04A8);
+		phy_stackrestore(0x042B);
+		phy_stackrestore(0x048C);
+		tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED,
+					     B43legacy_UCODEFLAGS_OFFSET);
+		if (tmp32 & 0x800) {
+			tmp32 &= ~0x800;
+			b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+					      B43legacy_UCODEFLAGS_OFFSET,
+					      tmp32);
+		}
+		b43legacy_calc_nrssi_slope(dev);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+}
+
+#undef phy_stacksave
+#undef phy_stackrestore
+#undef radio_stacksave
+#undef radio_stackrestore
+#undef ilt_stacksave
+#undef ilt_stackrestore
+
+int b43legacy_radio_set_interference_mitigation(struct b43legacy_wldev *dev,
+						int mode)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	int currentmode;
+
+	if ((phy->type != B43legacy_PHYTYPE_G) ||
+	    (phy->rev == 0) || (!phy->gmode))
+		return -ENODEV;
+
+	phy->aci_wlan_automatic = 0;
+	switch (mode) {
+	case B43legacy_RADIO_INTERFMODE_AUTOWLAN:
+		phy->aci_wlan_automatic = 1;
+		if (phy->aci_enable)
+			mode = B43legacy_RADIO_INTERFMODE_MANUALWLAN;
+		else
+			mode = B43legacy_RADIO_INTERFMODE_NONE;
+		break;
+	case B43legacy_RADIO_INTERFMODE_NONE:
+	case B43legacy_RADIO_INTERFMODE_NONWLAN:
+	case B43legacy_RADIO_INTERFMODE_MANUALWLAN:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	currentmode = phy->interfmode;
+	if (currentmode == mode)
+		return 0;
+	if (currentmode != B43legacy_RADIO_INTERFMODE_NONE)
+		b43legacy_radio_interference_mitigation_disable(dev,
+								currentmode);
+
+	if (mode == B43legacy_RADIO_INTERFMODE_NONE) {
+		phy->aci_enable = 0;
+		phy->aci_hw_rssi = 0;
+	} else
+		b43legacy_radio_interference_mitigation_enable(dev, mode);
+	phy->interfmode = mode;
+
+	return 0;
+}
+
+u16 b43legacy_radio_calibrationvalue(struct b43legacy_wldev *dev)
+{
+	u16 reg;
+	u16 index;
+	u16 ret;
+
+	reg = b43legacy_radio_read16(dev, 0x0060);
+	index = (reg & 0x001E) >> 1;
+	ret = rcc_table[index] << 1;
+	ret |= (reg & 0x0001);
+	ret |= 0x0020;
+
+	return ret;
+}
+
+#define LPD(L, P, D)    (((L) << 2) | ((P) << 1) | ((D) << 0))
+static u16 b43legacy_get_812_value(struct b43legacy_wldev *dev, u8 lpd)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 loop_or = 0;
+	u16 adj_loopback_gain = phy->loopback_gain[0];
+	u8 loop;
+	u16 extern_lna_control;
+
+	if (!phy->gmode)
+		return 0;
+	if (!has_loopback_gain(phy)) {
+		if (phy->rev < 7 || !(dev->dev->bus->sprom.r1.boardflags_lo
+		    & B43legacy_BFL_EXTLNA)) {
+			switch (lpd) {
+			case LPD(0, 1, 1):
+				return 0x0FB2;
+			case LPD(0, 0, 1):
+				return 0x00B2;
+			case LPD(1, 0, 1):
+				return 0x30B2;
+			case LPD(1, 0, 0):
+				return 0x30B3;
+			default:
+				B43legacy_BUG_ON(1);
+			}
+		} else {
+			switch (lpd) {
+			case LPD(0, 1, 1):
+				return 0x8FB2;
+			case LPD(0, 0, 1):
+				return 0x80B2;
+			case LPD(1, 0, 1):
+				return 0x20B2;
+			case LPD(1, 0, 0):
+				return 0x20B3;
+			default:
+				B43legacy_BUG_ON(1);
+			}
+		}
+	} else {
+		if (phy->radio_rev == 8)
+			adj_loopback_gain += 0x003E;
+		else
+			adj_loopback_gain += 0x0026;
+		if (adj_loopback_gain >= 0x46) {
+			adj_loopback_gain -= 0x46;
+			extern_lna_control = 0x3000;
+		} else if (adj_loopback_gain >= 0x3A) {
+			adj_loopback_gain -= 0x3A;
+			extern_lna_control = 0x2000;
+		} else if (adj_loopback_gain >= 0x2E) {
+			adj_loopback_gain -= 0x2E;
+			extern_lna_control = 0x1000;
+		} else {
+			adj_loopback_gain -= 0x10;
+			extern_lna_control = 0x0000;
+		}
+		for (loop = 0; loop < 16; loop++) {
+			u16 tmp = adj_loopback_gain - 6 * loop;
+			if (tmp < 6)
+				break;
+		}
+
+		loop_or = (loop << 8) | extern_lna_control;
+		if (phy->rev >= 7 && dev->dev->bus->sprom.r1.boardflags_lo
+		    & B43legacy_BFL_EXTLNA) {
+			if (extern_lna_control)
+				loop_or |= 0x8000;
+			switch (lpd) {
+			case LPD(0, 1, 1):
+				return 0x8F92;
+			case LPD(0, 0, 1):
+				return (0x8092 | loop_or);
+			case LPD(1, 0, 1):
+				return (0x2092 | loop_or);
+			case LPD(1, 0, 0):
+				return (0x2093 | loop_or);
+			default:
+				B43legacy_BUG_ON(1);
+			}
+		} else {
+			switch (lpd) {
+			case LPD(0, 1, 1):
+				return 0x0F92;
+			case LPD(0, 0, 1):
+			case LPD(1, 0, 1):
+				return (0x0092 | loop_or);
+			case LPD(1, 0, 0):
+				return (0x0093 | loop_or);
+			default:
+				B43legacy_BUG_ON(1);
+			}
+		}
+	}
+	return 0;
+}
+
+u16 b43legacy_radio_init2050(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 backup[21] = { 0 };
+	u16 ret;
+	u16 i;
+	u16 j;
+	u32 tmp1 = 0;
+	u32 tmp2 = 0;
+
+	backup[0] = b43legacy_radio_read16(dev, 0x0043);
+	backup[14] = b43legacy_radio_read16(dev, 0x0051);
+	backup[15] = b43legacy_radio_read16(dev, 0x0052);
+	backup[1] = b43legacy_phy_read(dev, 0x0015);
+	backup[16] = b43legacy_phy_read(dev, 0x005A);
+	backup[17] = b43legacy_phy_read(dev, 0x0059);
+	backup[18] = b43legacy_phy_read(dev, 0x0058);
+	if (phy->type == B43legacy_PHYTYPE_B) {
+		backup[2] = b43legacy_phy_read(dev, 0x0030);
+		backup[3] = b43legacy_read16(dev, 0x03EC);
+		b43legacy_phy_write(dev, 0x0030, 0x00FF);
+		b43legacy_write16(dev, 0x03EC, 0x3F3F);
+	} else {
+		if (phy->gmode) {
+			backup[4] = b43legacy_phy_read(dev, 0x0811);
+			backup[5] = b43legacy_phy_read(dev, 0x0812);
+			backup[6] = b43legacy_phy_read(dev, 0x0814);
+			backup[7] = b43legacy_phy_read(dev, 0x0815);
+			backup[8] = b43legacy_phy_read(dev,
+						       B43legacy_PHY_G_CRS);
+			backup[9] = b43legacy_phy_read(dev, 0x0802);
+			b43legacy_phy_write(dev, 0x0814,
+					    (b43legacy_phy_read(dev, 0x0814)
+					    | 0x0003));
+			b43legacy_phy_write(dev, 0x0815,
+					    (b43legacy_phy_read(dev, 0x0815)
+					    & 0xFFFC));
+			b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+					    (b43legacy_phy_read(dev,
+					    B43legacy_PHY_G_CRS) & 0x7FFF));
+			b43legacy_phy_write(dev, 0x0802,
+					    (b43legacy_phy_read(dev, 0x0802)
+					    & 0xFFFC));
+			if (phy->rev > 1) { /* loopback gain enabled */
+				backup[19] = b43legacy_phy_read(dev, 0x080F);
+				backup[20] = b43legacy_phy_read(dev, 0x0810);
+				if (phy->rev >= 3)
+					b43legacy_phy_write(dev, 0x080F,
+							    0xC020);
+				else
+					b43legacy_phy_write(dev, 0x080F,
+							    0x8020);
+				b43legacy_phy_write(dev, 0x0810, 0x0000);
+			}
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_get_812_value(dev,
+					    LPD(0, 1, 1)));
+			if (phy->rev < 7 ||
+			    !(dev->dev->bus->sprom.r1.boardflags_lo
+			    & B43legacy_BFL_EXTLNA))
+				b43legacy_phy_write(dev, 0x0811, 0x01B3);
+			else
+				b43legacy_phy_write(dev, 0x0811, 0x09B3);
+		}
+	}
+	b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO,
+			(b43legacy_read16(dev, B43legacy_MMIO_PHY_RADIO)
+					  | 0x8000));
+	backup[10] = b43legacy_phy_read(dev, 0x0035);
+	b43legacy_phy_write(dev, 0x0035,
+			    (b43legacy_phy_read(dev, 0x0035) & 0xFF7F));
+	backup[11] = b43legacy_read16(dev, 0x03E6);
+	backup[12] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT);
+
+	/* Initialization */
+	if (phy->analog == 0)
+		b43legacy_write16(dev, 0x03E6, 0x0122);
+	else {
+		if (phy->analog >= 2)
+			b43legacy_phy_write(dev, 0x0003,
+					    (b43legacy_phy_read(dev, 0x0003)
+					    & 0xFFBF) | 0x0040);
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT,
+				  (b43legacy_read16(dev,
+				  B43legacy_MMIO_CHANNEL_EXT) | 0x2000));
+	}
+
+	ret = b43legacy_radio_calibrationvalue(dev);
+
+	if (phy->type == B43legacy_PHYTYPE_B)
+		b43legacy_radio_write16(dev, 0x0078, 0x0026);
+
+	if (phy->gmode)
+		b43legacy_phy_write(dev, 0x0812,
+				    b43legacy_get_812_value(dev,
+				    LPD(0, 1, 1)));
+	b43legacy_phy_write(dev, 0x0015, 0xBFAF);
+	b43legacy_phy_write(dev, 0x002B, 0x1403);
+	if (phy->gmode)
+		b43legacy_phy_write(dev, 0x0812,
+				    b43legacy_get_812_value(dev,
+				    LPD(0, 0, 1)));
+	b43legacy_phy_write(dev, 0x0015, 0xBFA0);
+	b43legacy_radio_write16(dev, 0x0051,
+				(b43legacy_radio_read16(dev, 0x0051)
+				| 0x0004));
+	if (phy->radio_rev == 8)
+		b43legacy_radio_write16(dev, 0x0043, 0x001F);
+	else {
+		b43legacy_radio_write16(dev, 0x0052, 0x0000);
+		b43legacy_radio_write16(dev, 0x0043,
+					(b43legacy_radio_read16(dev, 0x0043)
+					& 0xFFF0) | 0x0009);
+	}
+	b43legacy_phy_write(dev, 0x0058, 0x0000);
+
+	for (i = 0; i < 16; i++) {
+		b43legacy_phy_write(dev, 0x005A, 0x0480);
+		b43legacy_phy_write(dev, 0x0059, 0xC810);
+		b43legacy_phy_write(dev, 0x0058, 0x000D);
+		if (phy->gmode)
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_get_812_value(dev,
+					    LPD(1, 0, 1)));
+		b43legacy_phy_write(dev, 0x0015, 0xAFB0);
+		udelay(10);
+		if (phy->gmode)
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_get_812_value(dev,
+					    LPD(1, 0, 1)));
+		b43legacy_phy_write(dev, 0x0015, 0xEFB0);
+		udelay(10);
+		if (phy->gmode)
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_get_812_value(dev,
+					    LPD(1, 0, 0)));
+		b43legacy_phy_write(dev, 0x0015, 0xFFF0);
+		udelay(20);
+		tmp1 += b43legacy_phy_read(dev, 0x002D);
+		b43legacy_phy_write(dev, 0x0058, 0x0000);
+		if (phy->gmode)
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_get_812_value(dev,
+					    LPD(1, 0, 1)));
+		b43legacy_phy_write(dev, 0x0015, 0xAFB0);
+	}
+
+	tmp1++;
+	tmp1 >>= 9;
+	udelay(10);
+	b43legacy_phy_write(dev, 0x0058, 0x0000);
+
+	for (i = 0; i < 16; i++) {
+		b43legacy_radio_write16(dev, 0x0078, (flip_4bit(i) << 1)
+					| 0x0020);
+		backup[13] = b43legacy_radio_read16(dev, 0x0078);
+		udelay(10);
+		for (j = 0; j < 16; j++) {
+			b43legacy_phy_write(dev, 0x005A, 0x0D80);
+			b43legacy_phy_write(dev, 0x0059, 0xC810);
+			b43legacy_phy_write(dev, 0x0058, 0x000D);
+			if (phy->gmode)
+				b43legacy_phy_write(dev, 0x0812,
+						    b43legacy_get_812_value(dev,
+						    LPD(1, 0, 1)));
+			b43legacy_phy_write(dev, 0x0015, 0xAFB0);
+			udelay(10);
+			if (phy->gmode)
+				b43legacy_phy_write(dev, 0x0812,
+						    b43legacy_get_812_value(dev,
+						    LPD(1, 0, 1)));
+			b43legacy_phy_write(dev, 0x0015, 0xEFB0);
+			udelay(10);
+			if (phy->gmode)
+				b43legacy_phy_write(dev, 0x0812,
+						    b43legacy_get_812_value(dev,
+						    LPD(1, 0, 0)));
+			b43legacy_phy_write(dev, 0x0015, 0xFFF0);
+			udelay(10);
+			tmp2 += b43legacy_phy_read(dev, 0x002D);
+			b43legacy_phy_write(dev, 0x0058, 0x0000);
+			if (phy->gmode)
+				b43legacy_phy_write(dev, 0x0812,
+						    b43legacy_get_812_value(dev,
+						    LPD(1, 0, 1)));
+			b43legacy_phy_write(dev, 0x0015, 0xAFB0);
+		}
+		tmp2++;
+		tmp2 >>= 8;
+		if (tmp1 < tmp2)
+			break;
+	}
+
+	/* Restore the registers */
+	b43legacy_phy_write(dev, 0x0015, backup[1]);
+	b43legacy_radio_write16(dev, 0x0051, backup[14]);
+	b43legacy_radio_write16(dev, 0x0052, backup[15]);
+	b43legacy_radio_write16(dev, 0x0043, backup[0]);
+	b43legacy_phy_write(dev, 0x005A, backup[16]);
+	b43legacy_phy_write(dev, 0x0059, backup[17]);
+	b43legacy_phy_write(dev, 0x0058, backup[18]);
+	b43legacy_write16(dev, 0x03E6, backup[11]);
+	if (phy->analog != 0)
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[12]);
+	b43legacy_phy_write(dev, 0x0035, backup[10]);
+	b43legacy_radio_selectchannel(dev, phy->channel, 1);
+	if (phy->type == B43legacy_PHYTYPE_B) {
+		b43legacy_phy_write(dev, 0x0030, backup[2]);
+		b43legacy_write16(dev, 0x03EC, backup[3]);
+	} else {
+		if (phy->gmode) {
+			b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO,
+					  (b43legacy_read16(dev,
+					  B43legacy_MMIO_PHY_RADIO) & 0x7FFF));
+			b43legacy_phy_write(dev, 0x0811, backup[4]);
+			b43legacy_phy_write(dev, 0x0812, backup[5]);
+			b43legacy_phy_write(dev, 0x0814, backup[6]);
+			b43legacy_phy_write(dev, 0x0815, backup[7]);
+			b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+					    backup[8]);
+			b43legacy_phy_write(dev, 0x0802, backup[9]);
+			if (phy->rev > 1) {
+				b43legacy_phy_write(dev, 0x080F, backup[19]);
+				b43legacy_phy_write(dev, 0x0810, backup[20]);
+			}
+		}
+	}
+	if (i >= 15)
+		ret = backup[13];
+
+	return ret;
+}
+
+static inline
+u16 freq_r3A_value(u16 frequency)
+{
+	u16 value;
+
+	if (frequency < 5091)
+		value = 0x0040;
+	else if (frequency < 5321)
+		value = 0x0000;
+	else if (frequency < 5806)
+		value = 0x0080;
+	else
+		value = 0x0040;
+
+	return value;
+}
+
+void b43legacy_radio_set_tx_iq(struct b43legacy_wldev *dev)
+{
+	static const u8 data_high[5] = { 0x00, 0x40, 0x80, 0x90, 0xD0 };
+	static const u8 data_low[5]  = { 0x00, 0x01, 0x05, 0x06, 0x0A };
+	u16 tmp = b43legacy_radio_read16(dev, 0x001E);
+	int i;
+	int j;
+
+	for (i = 0; i < 5; i++) {
+		for (j = 0; j < 5; j++) {
+			if (tmp == (data_high[i] | data_low[j])) {
+				b43legacy_phy_write(dev, 0x0069, (i - j) << 8 |
+						    0x00C0);
+				return;
+			}
+		}
+	}
+}
+
+int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev,
+				  u8 channel,
+				  int synthetic_pu_workaround)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+/* TODO: Check if channel is valid - return -EINVAL if not */
+	if (synthetic_pu_workaround)
+		b43legacy_synth_pu_workaround(dev, channel);
+
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL,
+			  channel2freq_bg(channel));
+
+	if (channel == 14) {
+		if (dev->dev->bus->sprom.r1.country_code == 5)   /* JAPAN) */
+			b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+					      B43legacy_UCODEFLAGS_OFFSET,
+					      b43legacy_shm_read32(dev,
+					      B43legacy_SHM_SHARED,
+					      B43legacy_UCODEFLAGS_OFFSET)
+					      & ~(1 << 7));
+		else
+			b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+					      B43legacy_UCODEFLAGS_OFFSET,
+					      b43legacy_shm_read32(dev,
+					      B43legacy_SHM_SHARED,
+					      B43legacy_UCODEFLAGS_OFFSET)
+					      | (1 << 7));
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT,
+				  b43legacy_read16(dev,
+				  B43legacy_MMIO_CHANNEL_EXT) | (1 << 11));
+	} else
+		b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT,
+				  b43legacy_read16(dev,
+				  B43legacy_MMIO_CHANNEL_EXT) & 0xF7BF);
+
+	phy->channel = channel;
+	/*XXX: Using the longer of 2 timeouts (8000 vs 2000 usecs). Specs states
+	 *     that 2000 usecs might suffice. */
+	msleep(8);
+
+	return 0;
+}
+
+void b43legacy_radio_set_txantenna(struct b43legacy_wldev *dev, u32 val)
+{
+	u16 tmp;
+
+	val <<= 8;
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0022) & 0xFCFF;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0022, tmp | val);
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x03A8) & 0xFCFF;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x03A8, tmp | val);
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0054) & 0xFCFF;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0054, tmp | val);
+}
+
+/* http://bcm-specs.sipsolutions.net/TX_Gain_Base_Band */
+static u16 b43legacy_get_txgain_base_band(u16 txpower)
+{
+	u16 ret;
+
+	B43legacy_WARN_ON(txpower > 63);
+
+	if (txpower >= 54)
+		ret = 2;
+	else if (txpower >= 49)
+		ret = 4;
+	else if (txpower >= 44)
+		ret = 5;
+	else
+		ret = 6;
+
+	return ret;
+}
+
+/* http://bcm-specs.sipsolutions.net/TX_Gain_Radio_Frequency_Power_Amplifier */
+static u16 b43legacy_get_txgain_freq_power_amp(u16 txpower)
+{
+	u16 ret;
+
+	B43legacy_WARN_ON(txpower > 63);
+
+	if (txpower >= 32)
+		ret = 0;
+	else if (txpower >= 25)
+		ret = 1;
+	else if (txpower >= 20)
+		ret = 2;
+	else if (txpower >= 12)
+		ret = 3;
+	else
+		ret = 4;
+
+	return ret;
+}
+
+/* http://bcm-specs.sipsolutions.net/TX_Gain_Digital_Analog_Converter */
+static u16 b43legacy_get_txgain_dac(u16 txpower)
+{
+	u16 ret;
+
+	B43legacy_WARN_ON(txpower > 63);
+
+	if (txpower >= 54)
+		ret = txpower - 53;
+	else if (txpower >= 49)
+		ret = txpower - 42;
+	else if (txpower >= 44)
+		ret = txpower - 37;
+	else if (txpower >= 32)
+		ret = txpower - 32;
+	else if (txpower >= 25)
+		ret = txpower - 20;
+	else if (txpower >= 20)
+		ret = txpower - 13;
+	else if (txpower >= 12)
+		ret = txpower - 8;
+	else
+		ret = txpower;
+
+	return ret;
+}
+
+void b43legacy_radio_set_txpower_a(struct b43legacy_wldev *dev, u16 txpower)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 pamp;
+	u16 base;
+	u16 dac;
+	u16 ilt;
+
+	txpower = limit_value(txpower, 0, 63);
+
+	pamp = b43legacy_get_txgain_freq_power_amp(txpower);
+	pamp <<= 5;
+	pamp &= 0x00E0;
+	b43legacy_phy_write(dev, 0x0019, pamp);
+
+	base = b43legacy_get_txgain_base_band(txpower);
+	base &= 0x000F;
+	b43legacy_phy_write(dev, 0x0017, base | 0x0020);
+
+	ilt = b43legacy_ilt_read(dev, 0x3001);
+	ilt &= 0x0007;
+
+	dac = b43legacy_get_txgain_dac(txpower);
+	dac <<= 3;
+	dac |= ilt;
+
+	b43legacy_ilt_write(dev, 0x3001, dac);
+
+	phy->txpwr_offset = txpower;
+
+	/* TODO: FuncPlaceholder (Adjust BB loft cancel) */
+}
+
+void b43legacy_radio_set_txpower_bg(struct b43legacy_wldev *dev,
+				    u16 baseband_attenuation,
+				    u16 radio_attenuation,
+				    u16 txpower)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (baseband_attenuation == 0xFFFF)
+		baseband_attenuation = phy->bbatt;
+	if (radio_attenuation == 0xFFFF)
+		radio_attenuation = phy->rfatt;
+	if (txpower == 0xFFFF)
+		txpower = phy->txctl1;
+	phy->bbatt = baseband_attenuation;
+	phy->rfatt = radio_attenuation;
+	phy->txctl1 = txpower;
+
+	B43legacy_WARN_ON(baseband_attenuation > 11);
+	if (phy->radio_rev < 6)
+		B43legacy_WARN_ON(radio_attenuation > 9);
+	else
+		B43legacy_WARN_ON(radio_attenuation > 31);
+	B43legacy_WARN_ON(txpower > 7);
+
+	b43legacy_phy_set_baseband_attenuation(dev, baseband_attenuation);
+	b43legacy_radio_write16(dev, 0x0043, radio_attenuation);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0064,
+			      radio_attenuation);
+	if (phy->radio_ver == 0x2050)
+		b43legacy_radio_write16(dev, 0x0052,
+					(b43legacy_radio_read16(dev, 0x0052)
+					& ~0x0070) | ((txpower << 4) & 0x0070));
+	/* FIXME: The spec is very weird and unclear here. */
+	if (phy->type == B43legacy_PHYTYPE_G)
+		b43legacy_phy_lo_adjust(dev, 0);
+}
+
+u16 b43legacy_default_baseband_attenuation(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (phy->radio_ver == 0x2050 && phy->radio_rev < 6)
+		return 0;
+	return 2;
+}
+
+u16 b43legacy_default_radio_attenuation(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 att = 0xFFFF;
+
+	switch (phy->radio_ver) {
+	case 0x2053:
+		switch (phy->radio_rev) {
+		case 1:
+			att = 6;
+			break;
+		}
+		break;
+	case 0x2050:
+		switch (phy->radio_rev) {
+		case 0:
+			att = 5;
+			break;
+		case 1:
+			if (phy->type == B43legacy_PHYTYPE_G) {
+				if (is_bcm_board_vendor(dev) &&
+				    dev->dev->bus->boardinfo.type == 0x421 &&
+				    dev->dev->bus->boardinfo.rev >= 30)
+					att = 3;
+				else if (is_bcm_board_vendor(dev) &&
+					 dev->dev->bus->boardinfo.type == 0x416)
+					att = 3;
+				else
+					att = 1;
+			} else {
+				if (is_bcm_board_vendor(dev) &&
+				    dev->dev->bus->boardinfo.type == 0x421 &&
+				    dev->dev->bus->boardinfo.rev >= 30)
+					att = 7;
+				else
+					att = 6;
+			}
+			break;
+		case 2:
+			if (phy->type == B43legacy_PHYTYPE_G) {
+				if (is_bcm_board_vendor(dev) &&
+				    dev->dev->bus->boardinfo.type == 0x421 &&
+				    dev->dev->bus->boardinfo.rev >= 30)
+					att = 3;
+				else if (is_bcm_board_vendor(dev) &&
+					 dev->dev->bus->boardinfo.type ==
+					 0x416)
+					att = 5;
+				else if (dev->dev->bus->chip_id == 0x4320)
+					att = 4;
+				else
+					att = 3;
+			} else
+				att = 6;
+			break;
+		case 3:
+			att = 5;
+			break;
+		case 4:
+		case 5:
+			att = 1;
+			break;
+		case 6:
+		case 7:
+			att = 5;
+			break;
+		case 8:
+			att = 0x1A;
+			break;
+		case 9:
+		default:
+			att = 5;
+		}
+	}
+	if (is_bcm_board_vendor(dev) &&
+	    dev->dev->bus->boardinfo.type == 0x421) {
+		if (dev->dev->bus->boardinfo.rev < 0x43)
+			att = 2;
+		else if (dev->dev->bus->boardinfo.rev < 0x51)
+			att = 3;
+	}
+	if (att == 0xFFFF)
+		att = 5;
+
+	return att;
+}
+
+u16 b43legacy_default_txctl1(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (phy->radio_ver != 0x2050)
+		return 0;
+	if (phy->radio_rev == 1)
+		return 3;
+	if (phy->radio_rev < 6)
+		return 2;
+	if (phy->radio_rev == 8)
+		return 1;
+	return 0;
+}
+
+void b43legacy_radio_turn_on(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	int err;
+
+	might_sleep();
+
+	if (phy->radio_on)
+		return;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+	case B43legacy_PHYTYPE_G:
+		b43legacy_phy_write(dev, 0x0015, 0x8000);
+		b43legacy_phy_write(dev, 0x0015, 0xCC00);
+		b43legacy_phy_write(dev, 0x0015,
+				    (phy->gmode ? 0x00C0 : 0x0000));
+		err = b43legacy_radio_selectchannel(dev,
+					B43legacy_RADIO_DEFAULT_CHANNEL_BG, 1);
+		B43legacy_WARN_ON(err != 0);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+	phy->radio_on = 1;
+	b43legacydbg(dev->wl, "Radio turned on\n");
+	b43legacy_leds_update(dev, 0);
+}
+
+void b43legacy_radio_turn_off(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (phy->type == B43legacy_PHYTYPE_G && dev->dev->id.revision >= 5) {
+		b43legacy_phy_write(dev, 0x0811, b43legacy_phy_read(dev, 0x0811)
+				    | 0x008C);
+		b43legacy_phy_write(dev, 0x0812, b43legacy_phy_read(dev, 0x0812)
+				    & 0xFF73);
+	} else
+		b43legacy_phy_write(dev, 0x0015, 0xAA00);
+	phy->radio_on = 0;
+	b43legacydbg(dev->wl, "Radio turned off\n");
+	b43legacy_leds_update(dev, 0);
+}
+
+void b43legacy_radio_clear_tssi(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+	case B43legacy_PHYTYPE_G:
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0058,
+				      0x7F7F);
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x005a,
+				      0x7F7F);
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0070,
+				      0x7F7F);
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0072,
+				      0x7F7F);
+		break;
+	}
+}