Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

25 files changed, 14644 insertions, 0 deletions

diff --git a/drivers/net/wireless/broadcom/b43legacy/Kconfig b/drivers/net/wireless/broadcom/b43legacy/Kconfig
new file mode 100644
index 000000000..e4da34ec4
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/Kconfig
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config B43LEGACY
+	tristate "Broadcom 43xx-legacy wireless support (mac80211 stack)"
+	depends on SSB_POSSIBLE && MAC80211 && HAS_DMA
+	select SSB
+	select FW_LOADER
+	help
+	  b43legacy is a driver for 802.11b devices from Broadcom (BCM4301 and
+	  BCM4303) and early model 802.11g chips (BCM4306 Ver. 2) used in the
+	  Linksys WPC54G V1 PCMCIA devices.
+
+	  Newer 802.11g and 802.11a devices need b43.
+
+	  It is safe to include both b43 and b43legacy as the underlying glue
+	  layer will automatically load the correct version for your device.
+
+	  This driver uses V3 firmware, which must be installed separately using
+	  b43-fwcutter.
+
+	  This driver can be built as a module (recommended) that will be
+	  called "b43legacy". If unsure, say M.
+
+# Auto-select SSB PCI-HOST support, if possible
+config B43LEGACY_PCI_AUTOSELECT
+	bool
+	depends on B43LEGACY && SSB_PCIHOST_POSSIBLE
+	select SSB_PCIHOST
+	select SSB_B43_PCI_BRIDGE
+	default y
+
+# Auto-select SSB PCICORE driver, if possible
+config B43LEGACY_PCICORE_AUTOSELECT
+	bool
+	depends on B43LEGACY && SSB_DRIVER_PCICORE_POSSIBLE
+	select SSB_DRIVER_PCICORE
+	default y
+
+# LED support
+# This config option automatically enables b43legacy LEDS support,
+# if it's possible.
+config B43LEGACY_LEDS
+	bool
+	depends on B43LEGACY && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = B43LEGACY)
+	default y
+
+# This config option automatically enables b43 HW-RNG support,
+# if the HW-RNG core is enabled.
+config B43LEGACY_HWRNG
+	bool
+	depends on B43LEGACY && (HW_RANDOM = y || HW_RANDOM = B43LEGACY)
+	default y
+
+config B43LEGACY_DEBUG
+	bool "Broadcom 43xx-legacy debugging"
+	depends on B43LEGACY
+	default y
+	help
+	  Say Y, because this information will help you get the driver running.
+	  This option generates a minimum of log output.
+
+config B43LEGACY_DMA
+	bool
+	depends on B43LEGACY
+
+config B43LEGACY_PIO
+	bool
+	depends on B43LEGACY
+
+choice
+	prompt "Broadcom 43xx-legacy data transfer mode"
+	depends on B43LEGACY
+	default B43LEGACY_DMA_AND_PIO_MODE
+
+config B43LEGACY_DMA_AND_PIO_MODE
+	bool "DMA + PIO"
+	select B43LEGACY_DMA
+	select B43LEGACY_PIO
+	help
+	  Include both, Direct Memory Access (DMA) and Programmed I/O (PIO)
+	  data transfer modes. The mode actually used is selectable through
+	  the module parameter "pio". With pio=0 as a module parameter, the
+	  default DMA is used, otherwise PIO is used.
+
+	  If unsure, choose this option.
+
+config B43LEGACY_DMA_MODE
+	bool "DMA (Direct Memory Access) only"
+	select B43LEGACY_DMA
+	help
+	  Only include Direct Memory Access (DMA).
+	  This reduces the size of the driver module, by omitting the PIO code.
+
+config B43LEGACY_PIO_MODE
+	bool "PIO (Programmed I/O) only"
+	select B43LEGACY_PIO
+	help
+	  Only include Programmed I/O (PIO).
+	  This reduces the size of the driver module, by omitting the DMA code.
+	  Please note that PIO transfers are slow (compared to DMA).
+
+	  Also note that not all devices of the b43legacy series support PIO.
+
+	  You should use PIO only if DMA does not work for you.
+
+endchoice
diff --git a/drivers/net/wireless/broadcom/b43legacy/Makefile b/drivers/net/wireless/broadcom/b43legacy/Makefile
new file mode 100644
index 000000000..f8b392f09
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/Makefile
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+# b43legacy core
+b43legacy-y				+= main.o
+b43legacy-y				+= ilt.o
+b43legacy-y				+= phy.o
+b43legacy-y				+= radio.o
+b43legacy-y				+= sysfs.o
+b43legacy-y				+= xmit.o
+# b43 RFKILL button support
+b43legacy-y				+= rfkill.o
+# b43legacy LED support
+b43legacy-$(CONFIG_B43LEGACY_LEDS)	+= leds.o
+# b43legacy debugging
+b43legacy-$(CONFIG_B43LEGACY_DEBUG)	+= debugfs.o
+# b43legacy DMA and PIO
+b43legacy-$(CONFIG_B43LEGACY_DMA)	+= dma.o
+b43legacy-$(CONFIG_B43LEGACY_PIO)	+= pio.o
+
+obj-$(CONFIG_B43LEGACY)			+= b43legacy.o
+
diff --git a/drivers/net/wireless/broadcom/b43legacy/b43legacy.h b/drivers/net/wireless/broadcom/b43legacy/b43legacy.h
new file mode 100644
index 000000000..f49365d14
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/b43legacy.h
@@ -0,0 +1,859 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_H_
+#define B43legacy_H_
+
+#include <linux/hw_random.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/stringify.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/atomic.h>
+#include <linux/io.h>
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_driver_chipcommon.h>
+#include <linux/completion.h>
+
+#include <net/mac80211.h>
+
+#include "debugfs.h"
+#include "leds.h"
+#include "rfkill.h"
+#include "phy.h"
+
+
+#define B43legacy_IRQWAIT_MAX_RETRIES	20
+
+/* MMIO offsets */
+#define B43legacy_MMIO_DMA0_REASON	0x20
+#define B43legacy_MMIO_DMA0_IRQ_MASK	0x24
+#define B43legacy_MMIO_DMA1_REASON	0x28
+#define B43legacy_MMIO_DMA1_IRQ_MASK	0x2C
+#define B43legacy_MMIO_DMA2_REASON	0x30
+#define B43legacy_MMIO_DMA2_IRQ_MASK	0x34
+#define B43legacy_MMIO_DMA3_REASON	0x38
+#define B43legacy_MMIO_DMA3_IRQ_MASK	0x3C
+#define B43legacy_MMIO_DMA4_REASON	0x40
+#define B43legacy_MMIO_DMA4_IRQ_MASK	0x44
+#define B43legacy_MMIO_DMA5_REASON	0x48
+#define B43legacy_MMIO_DMA5_IRQ_MASK	0x4C
+#define B43legacy_MMIO_MACCTL		0x120	/* MAC control */
+#define B43legacy_MMIO_MACCMD		0x124	/* MAC command */
+#define B43legacy_MMIO_GEN_IRQ_REASON	0x128
+#define B43legacy_MMIO_GEN_IRQ_MASK	0x12C
+#define B43legacy_MMIO_RAM_CONTROL	0x130
+#define B43legacy_MMIO_RAM_DATA		0x134
+#define B43legacy_MMIO_PS_STATUS		0x140
+#define B43legacy_MMIO_RADIO_HWENABLED_HI	0x158
+#define B43legacy_MMIO_SHM_CONTROL	0x160
+#define B43legacy_MMIO_SHM_DATA		0x164
+#define B43legacy_MMIO_SHM_DATA_UNALIGNED	0x166
+#define B43legacy_MMIO_XMITSTAT_0		0x170
+#define B43legacy_MMIO_XMITSTAT_1		0x174
+#define B43legacy_MMIO_REV3PLUS_TSF_LOW	0x180 /* core rev >= 3 only */
+#define B43legacy_MMIO_REV3PLUS_TSF_HIGH	0x184 /* core rev >= 3 only */
+#define B43legacy_MMIO_TSF_CFP_REP	0x188
+#define B43legacy_MMIO_TSF_CFP_START	0x18C
+/* 32-bit DMA */
+#define B43legacy_MMIO_DMA32_BASE0	0x200
+#define B43legacy_MMIO_DMA32_BASE1	0x220
+#define B43legacy_MMIO_DMA32_BASE2	0x240
+#define B43legacy_MMIO_DMA32_BASE3	0x260
+#define B43legacy_MMIO_DMA32_BASE4	0x280
+#define B43legacy_MMIO_DMA32_BASE5	0x2A0
+/* 64-bit DMA */
+#define B43legacy_MMIO_DMA64_BASE0	0x200
+#define B43legacy_MMIO_DMA64_BASE1	0x240
+#define B43legacy_MMIO_DMA64_BASE2	0x280
+#define B43legacy_MMIO_DMA64_BASE3	0x2C0
+#define B43legacy_MMIO_DMA64_BASE4	0x300
+#define B43legacy_MMIO_DMA64_BASE5	0x340
+/* PIO */
+#define B43legacy_MMIO_PIO1_BASE		0x300
+#define B43legacy_MMIO_PIO2_BASE		0x310
+#define B43legacy_MMIO_PIO3_BASE		0x320
+#define B43legacy_MMIO_PIO4_BASE		0x330
+
+#define B43legacy_MMIO_PHY_VER		0x3E0
+#define B43legacy_MMIO_PHY_RADIO		0x3E2
+#define B43legacy_MMIO_PHY0		0x3E6
+#define B43legacy_MMIO_ANTENNA		0x3E8
+#define B43legacy_MMIO_CHANNEL		0x3F0
+#define B43legacy_MMIO_CHANNEL_EXT	0x3F4
+#define B43legacy_MMIO_RADIO_CONTROL	0x3F6
+#define B43legacy_MMIO_RADIO_DATA_HIGH	0x3F8
+#define B43legacy_MMIO_RADIO_DATA_LOW	0x3FA
+#define B43legacy_MMIO_PHY_CONTROL	0x3FC
+#define B43legacy_MMIO_PHY_DATA		0x3FE
+#define B43legacy_MMIO_MACFILTER_CONTROL	0x420
+#define B43legacy_MMIO_MACFILTER_DATA	0x422
+#define B43legacy_MMIO_RCMTA_COUNT	0x43C /* Receive Match Transmitter Addr */
+#define B43legacy_MMIO_RADIO_HWENABLED_LO	0x49A
+#define B43legacy_MMIO_GPIO_CONTROL	0x49C
+#define B43legacy_MMIO_GPIO_MASK		0x49E
+#define B43legacy_MMIO_TSF_CFP_PRETBTT	0x612
+#define B43legacy_MMIO_TSF_0		0x632 /* core rev < 3 only */
+#define B43legacy_MMIO_TSF_1		0x634 /* core rev < 3 only */
+#define B43legacy_MMIO_TSF_2		0x636 /* core rev < 3 only */
+#define B43legacy_MMIO_TSF_3		0x638 /* core rev < 3 only */
+#define B43legacy_MMIO_RNG		0x65A
+#define B43legacy_MMIO_POWERUP_DELAY	0x6A8
+
+/* SPROM boardflags_lo values */
+#define B43legacy_BFL_PACTRL		0x0002
+#define B43legacy_BFL_RSSI		0x0008
+#define B43legacy_BFL_EXTLNA		0x1000
+
+/* GPIO register offset, in both ChipCommon and PCI core. */
+#define B43legacy_GPIO_CONTROL		0x6c
+
+/* SHM Routing */
+#define	B43legacy_SHM_SHARED		0x0001
+#define	B43legacy_SHM_WIRELESS		0x0002
+#define	B43legacy_SHM_HW		0x0004
+#define	B43legacy_SHM_UCODE		0x0300
+
+/* SHM Routing modifiers */
+#define B43legacy_SHM_AUTOINC_R		0x0200 /* Read Auto-increment */
+#define B43legacy_SHM_AUTOINC_W		0x0100 /* Write Auto-increment */
+#define B43legacy_SHM_AUTOINC_RW	(B43legacy_SHM_AUTOINC_R | \
+					 B43legacy_SHM_AUTOINC_W)
+
+/* Misc SHM_SHARED offsets */
+#define B43legacy_SHM_SH_WLCOREREV	0x0016 /* 802.11 core revision */
+#define B43legacy_SHM_SH_HOSTFLO	0x005E /* Hostflags ucode opts (low) */
+#define B43legacy_SHM_SH_HOSTFHI	0x0060 /* Hostflags ucode opts (high) */
+/* SHM_SHARED crypto engine */
+#define B43legacy_SHM_SH_KEYIDXBLOCK	0x05D4 /* Key index/algorithm block */
+/* SHM_SHARED beacon/AP variables */
+#define B43legacy_SHM_SH_DTIMP		0x0012 /* DTIM period */
+#define B43legacy_SHM_SH_BTL0		0x0018 /* Beacon template length 0 */
+#define B43legacy_SHM_SH_BTL1		0x001A /* Beacon template length 1 */
+#define B43legacy_SHM_SH_BTSFOFF	0x001C /* Beacon TSF offset */
+#define B43legacy_SHM_SH_TIMPOS		0x001E /* TIM position in beacon */
+#define B43legacy_SHM_SH_BEACPHYCTL	0x0054 /* Beacon PHY TX control word */
+/* SHM_SHARED ACK/CTS control */
+#define B43legacy_SHM_SH_ACKCTSPHYCTL	0x0022 /* ACK/CTS PHY control word */
+/* SHM_SHARED probe response variables */
+#define B43legacy_SHM_SH_PRTLEN		0x004A /* Probe Response template length */
+#define B43legacy_SHM_SH_PRMAXTIME	0x0074 /* Probe Response max time */
+#define B43legacy_SHM_SH_PRPHYCTL	0x0188 /* Probe Resp PHY TX control */
+/* SHM_SHARED rate tables */
+#define B43legacy_SHM_SH_OFDMDIRECT	0x0480 /* Pointer to OFDM direct map */
+#define B43legacy_SHM_SH_OFDMBASIC	0x04A0 /* Pointer to OFDM basic rate map */
+#define B43legacy_SHM_SH_CCKDIRECT	0x04C0 /* Pointer to CCK direct map */
+#define B43legacy_SHM_SH_CCKBASIC	0x04E0 /* Pointer to CCK basic rate map */
+/* SHM_SHARED microcode soft registers */
+#define B43legacy_SHM_SH_UCODEREV	0x0000 /* Microcode revision */
+#define B43legacy_SHM_SH_UCODEPATCH	0x0002 /* Microcode patchlevel */
+#define B43legacy_SHM_SH_UCODEDATE	0x0004 /* Microcode date */
+#define B43legacy_SHM_SH_UCODETIME	0x0006 /* Microcode time */
+#define B43legacy_SHM_SH_SPUWKUP	0x0094 /* pre-wakeup for synth PU in us */
+#define B43legacy_SHM_SH_PRETBTT	0x0096 /* pre-TBTT in us */
+
+#define B43legacy_UCODEFLAGS_OFFSET     0x005E
+
+/* Hardware Radio Enable masks */
+#define B43legacy_MMIO_RADIO_HWENABLED_HI_MASK (1 << 16)
+#define B43legacy_MMIO_RADIO_HWENABLED_LO_MASK (1 << 4)
+
+/* HostFlags. See b43legacy_hf_read/write() */
+#define B43legacy_HF_SYMW		0x00000002 /* G-PHY SYM workaround */
+#define B43legacy_HF_GDCW		0x00000020 /* G-PHY DV cancel filter */
+#define B43legacy_HF_OFDMPABOOST	0x00000040 /* Enable PA boost OFDM */
+#define B43legacy_HF_EDCF		0x00000100 /* on if WME/MAC suspended */
+
+/* MacFilter offsets. */
+#define B43legacy_MACFILTER_SELF	0x0000
+#define B43legacy_MACFILTER_BSSID	0x0003
+#define B43legacy_MACFILTER_MAC		0x0010
+
+/* PHYVersioning */
+#define B43legacy_PHYTYPE_B		0x01
+#define B43legacy_PHYTYPE_G		0x02
+
+/* PHYRegisters */
+#define B43legacy_PHY_G_LO_CONTROL	0x0810
+#define B43legacy_PHY_ILT_G_CTRL	0x0472
+#define B43legacy_PHY_ILT_G_DATA1	0x0473
+#define B43legacy_PHY_ILT_G_DATA2	0x0474
+#define B43legacy_PHY_G_PCTL		0x0029
+#define B43legacy_PHY_RADIO_BITFIELD	0x0401
+#define B43legacy_PHY_G_CRS		0x0429
+#define B43legacy_PHY_NRSSILT_CTRL	0x0803
+#define B43legacy_PHY_NRSSILT_DATA	0x0804
+
+/* RadioRegisters */
+#define B43legacy_RADIOCTL_ID		0x01
+
+/* MAC Control bitfield */
+#define B43legacy_MACCTL_ENABLED	0x00000001 /* MAC Enabled */
+#define B43legacy_MACCTL_PSM_RUN	0x00000002 /* Run Microcode */
+#define B43legacy_MACCTL_PSM_JMP0	0x00000004 /* Microcode jump to 0 */
+#define B43legacy_MACCTL_SHM_ENABLED	0x00000100 /* SHM Enabled */
+#define B43legacy_MACCTL_IHR_ENABLED	0x00000400 /* IHR Region Enabled */
+#define B43legacy_MACCTL_BE		0x00010000 /* Big Endian mode */
+#define B43legacy_MACCTL_INFRA		0x00020000 /* Infrastructure mode */
+#define B43legacy_MACCTL_AP		0x00040000 /* AccessPoint mode */
+#define B43legacy_MACCTL_RADIOLOCK	0x00080000 /* Radio lock */
+#define B43legacy_MACCTL_BEACPROMISC	0x00100000 /* Beacon Promiscuous */
+#define B43legacy_MACCTL_KEEP_BADPLCP	0x00200000 /* Keep bad PLCP frames */
+#define B43legacy_MACCTL_KEEP_CTL	0x00400000 /* Keep control frames */
+#define B43legacy_MACCTL_KEEP_BAD	0x00800000 /* Keep bad frames (FCS) */
+#define B43legacy_MACCTL_PROMISC	0x01000000 /* Promiscuous mode */
+#define B43legacy_MACCTL_HWPS		0x02000000 /* Hardware Power Saving */
+#define B43legacy_MACCTL_AWAKE		0x04000000 /* Device is awake */
+#define B43legacy_MACCTL_TBTTHOLD	0x10000000 /* TBTT Hold */
+#define B43legacy_MACCTL_GMODE		0x80000000 /* G Mode */
+
+/* MAC Command bitfield */
+#define B43legacy_MACCMD_BEACON0_VALID	0x00000001 /* Beacon 0 in template RAM is busy/valid */
+#define B43legacy_MACCMD_BEACON1_VALID	0x00000002 /* Beacon 1 in template RAM is busy/valid */
+#define B43legacy_MACCMD_DFQ_VALID	0x00000004 /* Directed frame queue valid (IBSS PS mode, ATIM) */
+#define B43legacy_MACCMD_CCA		0x00000008 /* Clear channel assessment */
+#define B43legacy_MACCMD_BGNOISE	0x00000010 /* Background noise */
+
+/* 802.11 core specific TM State Low flags */
+#define B43legacy_TMSLOW_GMODE		0x20000000 /* G Mode Enable */
+#define B43legacy_TMSLOW_PLLREFSEL	0x00200000 /* PLL Freq Ref Select */
+#define B43legacy_TMSLOW_MACPHYCLKEN	0x00100000 /* MAC PHY Clock Ctrl Enbl */
+#define B43legacy_TMSLOW_PHYRESET	0x00080000 /* PHY Reset */
+#define B43legacy_TMSLOW_PHYCLKEN	0x00040000 /* PHY Clock Enable */
+
+/* 802.11 core specific TM State High flags */
+#define B43legacy_TMSHIGH_FCLOCK	0x00040000 /* Fast Clock Available */
+#define B43legacy_TMSHIGH_GPHY		0x00010000 /* G-PHY avail (rev >= 5) */
+
+#define B43legacy_UCODEFLAG_AUTODIV       0x0001
+
+/* Generic-Interrupt reasons. */
+#define B43legacy_IRQ_MAC_SUSPENDED	0x00000001
+#define B43legacy_IRQ_BEACON		0x00000002
+#define B43legacy_IRQ_TBTT_INDI		0x00000004 /* Target Beacon Transmit Time */
+#define B43legacy_IRQ_BEACON_TX_OK	0x00000008
+#define B43legacy_IRQ_BEACON_CANCEL	0x00000010
+#define B43legacy_IRQ_ATIM_END		0x00000020
+#define B43legacy_IRQ_PMQ		0x00000040
+#define B43legacy_IRQ_PIO_WORKAROUND	0x00000100
+#define B43legacy_IRQ_MAC_TXERR		0x00000200
+#define B43legacy_IRQ_PHY_TXERR		0x00000800
+#define B43legacy_IRQ_PMEVENT		0x00001000
+#define B43legacy_IRQ_TIMER0		0x00002000
+#define B43legacy_IRQ_TIMER1		0x00004000
+#define B43legacy_IRQ_DMA		0x00008000
+#define B43legacy_IRQ_TXFIFO_FLUSH_OK	0x00010000
+#define B43legacy_IRQ_CCA_MEASURE_OK	0x00020000
+#define B43legacy_IRQ_NOISESAMPLE_OK	0x00040000
+#define B43legacy_IRQ_UCODE_DEBUG	0x08000000
+#define B43legacy_IRQ_RFKILL		0x10000000
+#define B43legacy_IRQ_TX_OK		0x20000000
+#define B43legacy_IRQ_PHY_G_CHANGED	0x40000000
+#define B43legacy_IRQ_TIMEOUT		0x80000000
+
+#define B43legacy_IRQ_ALL		0xFFFFFFFF
+#define B43legacy_IRQ_MASKTEMPLATE	(B43legacy_IRQ_MAC_SUSPENDED |	\
+					 B43legacy_IRQ_TBTT_INDI |	\
+					 B43legacy_IRQ_ATIM_END |	\
+					 B43legacy_IRQ_PMQ |		\
+					 B43legacy_IRQ_MAC_TXERR |	\
+					 B43legacy_IRQ_PHY_TXERR |	\
+					 B43legacy_IRQ_DMA |		\
+					 B43legacy_IRQ_TXFIFO_FLUSH_OK | \
+					 B43legacy_IRQ_NOISESAMPLE_OK | \
+					 B43legacy_IRQ_UCODE_DEBUG |	\
+					 B43legacy_IRQ_RFKILL |		\
+					 B43legacy_IRQ_TX_OK)
+
+/* Device specific rate values.
+ * The actual values defined here are (rate_in_mbps * 2).
+ * Some code depends on this. Don't change it. */
+#define B43legacy_CCK_RATE_1MB		2
+#define B43legacy_CCK_RATE_2MB		4
+#define B43legacy_CCK_RATE_5MB		11
+#define B43legacy_CCK_RATE_11MB		22
+#define B43legacy_OFDM_RATE_6MB		12
+#define B43legacy_OFDM_RATE_9MB		18
+#define B43legacy_OFDM_RATE_12MB	24
+#define B43legacy_OFDM_RATE_18MB	36
+#define B43legacy_OFDM_RATE_24MB	48
+#define B43legacy_OFDM_RATE_36MB	72
+#define B43legacy_OFDM_RATE_48MB	96
+#define B43legacy_OFDM_RATE_54MB	108
+/* Convert a b43legacy rate value to a rate in 100kbps */
+#define B43legacy_RATE_TO_100KBPS(rate)	(((rate) * 10) / 2)
+
+
+#define B43legacy_DEFAULT_SHORT_RETRY_LIMIT	7
+#define B43legacy_DEFAULT_LONG_RETRY_LIMIT	4
+
+#define B43legacy_PHY_TX_BADNESS_LIMIT		1000
+
+/* Max size of a security key */
+#define B43legacy_SEC_KEYSIZE		16
+/* Security algorithms. */
+enum {
+	B43legacy_SEC_ALGO_NONE = 0, /* unencrypted, as of TX header. */
+	B43legacy_SEC_ALGO_WEP40,
+	B43legacy_SEC_ALGO_TKIP,
+	B43legacy_SEC_ALGO_AES,
+	B43legacy_SEC_ALGO_WEP104,
+	B43legacy_SEC_ALGO_AES_LEGACY,
+};
+
+/* Core Information Registers */
+#define B43legacy_CIR_BASE                0xf00
+#define B43legacy_CIR_SBTPSFLAG           (B43legacy_CIR_BASE + 0x18)
+#define B43legacy_CIR_SBIMSTATE           (B43legacy_CIR_BASE + 0x90)
+#define B43legacy_CIR_SBINTVEC            (B43legacy_CIR_BASE + 0x94)
+#define B43legacy_CIR_SBTMSTATELOW        (B43legacy_CIR_BASE + 0x98)
+#define B43legacy_CIR_SBTMSTATEHIGH       (B43legacy_CIR_BASE + 0x9c)
+#define B43legacy_CIR_SBIMCONFIGLOW       (B43legacy_CIR_BASE + 0xa8)
+#define B43legacy_CIR_SB_ID_HI            (B43legacy_CIR_BASE + 0xfc)
+
+/* sbtmstatehigh state flags */
+#define B43legacy_SBTMSTATEHIGH_SERROR		0x00000001
+#define B43legacy_SBTMSTATEHIGH_BUSY		0x00000004
+#define B43legacy_SBTMSTATEHIGH_TIMEOUT		0x00000020
+#define B43legacy_SBTMSTATEHIGH_G_PHY_AVAIL	0x00010000
+#define B43legacy_SBTMSTATEHIGH_COREFLAGS	0x1FFF0000
+#define B43legacy_SBTMSTATEHIGH_DMA64BIT	0x10000000
+#define B43legacy_SBTMSTATEHIGH_GATEDCLK	0x20000000
+#define B43legacy_SBTMSTATEHIGH_BISTFAILED	0x40000000
+#define B43legacy_SBTMSTATEHIGH_BISTCOMPLETE	0x80000000
+
+/* sbimstate flags */
+#define B43legacy_SBIMSTATE_IB_ERROR		0x20000
+#define B43legacy_SBIMSTATE_TIMEOUT		0x40000
+
+#define PFX		KBUILD_MODNAME ": "
+#ifdef assert
+# undef assert
+#endif
+#ifdef CONFIG_B43LEGACY_DEBUG
+# define B43legacy_WARN_ON(x)	WARN_ON(x)
+# define B43legacy_BUG_ON(expr)						\
+	do {								\
+		if (unlikely((expr))) {					\
+			printk(KERN_INFO PFX "Test (%s) failed\n",	\
+					      #expr);			\
+			BUG_ON(expr);					\
+		}							\
+	} while (0)
+# define B43legacy_DEBUG	1
+#else
+/* This will evaluate the argument even if debugging is disabled. */
+static inline bool __b43legacy_warn_on_dummy(bool x) { return x; }
+# define B43legacy_WARN_ON(x)	__b43legacy_warn_on_dummy(unlikely(!!(x)))
+# define B43legacy_BUG_ON(x)	do { /* nothing */ } while (0)
+# define B43legacy_DEBUG	0
+#endif
+
+
+struct net_device;
+struct pci_dev;
+struct b43legacy_dmaring;
+struct b43legacy_pioqueue;
+
+/* The firmware file header */
+#define B43legacy_FW_TYPE_UCODE	'u'
+#define B43legacy_FW_TYPE_PCM	'p'
+#define B43legacy_FW_TYPE_IV	'i'
+struct b43legacy_fw_header {
+	/* File type */
+	u8 type;
+	/* File format version */
+	u8 ver;
+	u8 __padding[2];
+	/* Size of the data. For ucode and PCM this is in bytes.
+	 * For IV this is number-of-ivs. */
+	__be32 size;
+} __packed;
+
+/* Initial Value file format */
+#define B43legacy_IV_OFFSET_MASK	0x7FFF
+#define B43legacy_IV_32BIT		0x8000
+struct b43legacy_iv {
+	__be16 offset_size;
+	union {
+		__be16 d16;
+		__be32 d32;
+	} __packed data;
+} __packed;
+
+#define B43legacy_PHYMODE(phytype)	(1 << (phytype))
+#define B43legacy_PHYMODE_B		B43legacy_PHYMODE	\
+					((B43legacy_PHYTYPE_B))
+#define B43legacy_PHYMODE_G		B43legacy_PHYMODE	\
+					((B43legacy_PHYTYPE_G))
+
+/* Value pair to measure the LocalOscillator. */
+struct b43legacy_lopair {
+	s8 low;
+	s8 high;
+	u8 used:1;
+};
+#define B43legacy_LO_COUNT	(14*4)
+
+struct b43legacy_phy {
+	/* Possible PHYMODEs on this PHY */
+	u8 possible_phymodes;
+	/* GMODE bit enabled in MACCTL? */
+	bool gmode;
+
+	/* Analog Type */
+	u8 analog;
+	/* B43legacy_PHYTYPE_ */
+	u8 type;
+	/* PHY revision number. */
+	u8 rev;
+
+	u16 antenna_diversity;
+	u16 savedpctlreg;
+	/* Radio versioning */
+	u16 radio_manuf;	/* Radio manufacturer */
+	u16 radio_ver;		/* Radio version */
+	u8 calibrated:1;
+	u8 radio_rev;		/* Radio revision */
+
+	bool dyn_tssi_tbl;	/* tssi2dbm is kmalloc()ed. */
+
+	/* ACI (adjacent channel interference) flags. */
+	bool aci_enable;
+	bool aci_wlan_automatic;
+	bool aci_hw_rssi;
+
+	/* Radio switched on/off */
+	bool radio_on;
+	struct {
+		/* Values saved when turning the radio off.
+		 * They are needed when turning it on again. */
+		bool valid;
+		u16 rfover;
+		u16 rfoverval;
+	} radio_off_context;
+
+	u16 minlowsig[2];
+	u16 minlowsigpos[2];
+
+	/* LO Measurement Data.
+	 * Use b43legacy_get_lopair() to get a value.
+	 */
+	struct b43legacy_lopair *_lo_pairs;
+	/* TSSI to dBm table in use */
+	const s8 *tssi2dbm;
+	/* idle TSSI value */
+	s8 idle_tssi;
+	/* Target idle TSSI */
+	int tgt_idle_tssi;
+	/* Current idle TSSI */
+	int cur_idle_tssi;
+
+	/* LocalOscillator control values. */
+	struct b43legacy_txpower_lo_control *lo_control;
+	/* Values from b43legacy_calc_loopback_gain() */
+	s16 max_lb_gain;	/* Maximum Loopback gain in hdB */
+	s16 trsw_rx_gain;	/* TRSW RX gain in hdB */
+	s16 lna_lod_gain;	/* LNA lod */
+	s16 lna_gain;		/* LNA */
+	s16 pga_gain;		/* PGA */
+
+	/* Desired TX power level (in dBm). This is set by the user and
+	 * adjusted in b43legacy_phy_xmitpower(). */
+	u8 power_level;
+
+	/* Values from b43legacy_calc_loopback_gain() */
+	u16 loopback_gain[2];
+
+	/* TX Power control values. */
+	/* B/G PHY */
+	struct {
+		/* Current Radio Attenuation for TXpower recalculation. */
+		u16 rfatt;
+		/* Current Baseband Attenuation for TXpower recalculation. */
+		u16 bbatt;
+		/* Current TXpower control value for TXpower recalculation. */
+		u16 txctl1;
+		u16 txctl2;
+	};
+	/* A PHY */
+	struct {
+		u16 txpwr_offset;
+	};
+
+	/* Current Interference Mitigation mode */
+	int interfmode;
+	/* Stack of saved values from the Interference Mitigation code.
+	 * Each value in the stack is laid out as follows:
+	 * bit 0-11:  offset
+	 * bit 12-15: register ID
+	 * bit 16-32: value
+	 * register ID is: 0x1 PHY, 0x2 Radio, 0x3 ILT
+	 */
+#define B43legacy_INTERFSTACK_SIZE	26
+	u32 interfstack[B43legacy_INTERFSTACK_SIZE];
+
+	/* Saved values from the NRSSI Slope calculation */
+	s16 nrssi[2];
+	s32 nrssislope;
+	/* In memory nrssi lookup table. */
+	s8 nrssi_lt[64];
+
+	/* current channel */
+	u8 channel;
+
+	u16 lofcal;
+
+	u16 initval;
+
+	/* PHY TX errors counter. */
+	atomic_t txerr_cnt;
+
+#if B43legacy_DEBUG
+	/* Manual TX-power control enabled? */
+	bool manual_txpower_control;
+	/* PHY registers locked by b43legacy_phy_lock()? */
+	bool phy_locked;
+#endif /* B43legacy_DEBUG */
+};
+
+/* Data structures for DMA transmission, per 80211 core. */
+struct b43legacy_dma {
+	struct b43legacy_dmaring *tx_ring0;
+	struct b43legacy_dmaring *tx_ring1;
+	struct b43legacy_dmaring *tx_ring2;
+	struct b43legacy_dmaring *tx_ring3;
+	struct b43legacy_dmaring *tx_ring4;
+	struct b43legacy_dmaring *tx_ring5;
+
+	struct b43legacy_dmaring *rx_ring0;
+	struct b43legacy_dmaring *rx_ring3; /* only on core.rev < 5 */
+
+	u32 translation; /* Routing bits */
+};
+
+/* Data structures for PIO transmission, per 80211 core. */
+struct b43legacy_pio {
+	struct b43legacy_pioqueue *queue0;
+	struct b43legacy_pioqueue *queue1;
+	struct b43legacy_pioqueue *queue2;
+	struct b43legacy_pioqueue *queue3;
+};
+
+/* Context information for a noise calculation (Link Quality). */
+struct b43legacy_noise_calculation {
+	u8 channel_at_start;
+	bool calculation_running;
+	u8 nr_samples;
+	s8 samples[8][4];
+};
+
+struct b43legacy_stats {
+	u8 link_noise;
+	/* Store the last TX/RX times here for updating the leds. */
+	unsigned long last_tx;
+	unsigned long last_rx;
+};
+
+struct b43legacy_key {
+	void *keyconf;
+	bool enabled;
+	u8 algorithm;
+};
+
+#define B43legacy_QOS_QUEUE_NUM	4
+
+struct b43legacy_wldev;
+
+/* QOS parameters for a queue. */
+struct b43legacy_qos_params {
+	/* The QOS parameters */
+	struct ieee80211_tx_queue_params p;
+};
+
+/* Data structure for the WLAN parts (802.11 cores) of the b43legacy chip. */
+struct b43legacy_wl {
+	/* Pointer to the active wireless device on this chip */
+	struct b43legacy_wldev *current_dev;
+	/* Pointer to the ieee80211 hardware data structure */
+	struct ieee80211_hw *hw;
+
+	spinlock_t irq_lock;		/* locks IRQ */
+	struct mutex mutex;		/* locks wireless core state */
+	spinlock_t leds_lock;		/* lock for leds */
+
+	/* firmware loading work */
+	struct work_struct firmware_load;
+
+	/* We can only have one operating interface (802.11 core)
+	 * at a time. General information about this interface follows.
+	 */
+
+	struct ieee80211_vif *vif;
+	/* MAC address (can be NULL). */
+	u8 mac_addr[ETH_ALEN];
+	/* Current BSSID (can be NULL). */
+	u8 bssid[ETH_ALEN];
+	/* Interface type. (IEEE80211_IF_TYPE_XXX) */
+	int if_type;
+	/* Is the card operating in AP, STA or IBSS mode? */
+	bool operating;
+	/* filter flags */
+	unsigned int filter_flags;
+	/* Stats about the wireless interface */
+	struct ieee80211_low_level_stats ieee_stats;
+
+#ifdef CONFIG_B43LEGACY_HWRNG
+	struct hwrng rng;
+	u8 rng_initialized;
+	char rng_name[30 + 1];
+#endif
+
+	/* List of all wireless devices on this chip */
+	struct list_head devlist;
+	u8 nr_devs;
+
+	bool radiotap_enabled;
+	bool radio_enabled;
+
+	/* The beacon we are currently using (AP or IBSS mode).
+	 * This beacon stuff is protected by the irq_lock. */
+	struct sk_buff *current_beacon;
+	bool beacon0_uploaded;
+	bool beacon1_uploaded;
+	bool beacon_templates_virgin; /* Never wrote the templates? */
+	struct work_struct beacon_update_trigger;
+	/* The current QOS parameters for the 4 queues. */
+	struct b43legacy_qos_params qos_params[B43legacy_QOS_QUEUE_NUM];
+
+	/* Packet transmit work */
+	struct work_struct tx_work;
+
+	/* Queue of packets to be transmitted. */
+	struct sk_buff_head tx_queue[B43legacy_QOS_QUEUE_NUM];
+
+	/* Flag that implement the queues stopping. */
+	bool tx_queue_stopped[B43legacy_QOS_QUEUE_NUM];
+
+};
+
+/* Pointers to the firmware data and meta information about it. */
+struct b43legacy_firmware {
+	/* Microcode */
+	const struct firmware *ucode;
+	/* PCM code */
+	const struct firmware *pcm;
+	/* Initial MMIO values for the firmware */
+	const struct firmware *initvals;
+	/* Initial MMIO values for the firmware, band-specific */
+	const struct firmware *initvals_band;
+	/* Firmware revision */
+	u16 rev;
+	/* Firmware patchlevel */
+	u16 patch;
+};
+
+/* Device (802.11 core) initialization status. */
+enum {
+	B43legacy_STAT_UNINIT		= 0, /* Uninitialized. */
+	B43legacy_STAT_INITIALIZED	= 1, /* Initialized, not yet started. */
+	B43legacy_STAT_STARTED	= 2, /* Up and running. */
+};
+#define b43legacy_status(wldev)	atomic_read(&(wldev)->__init_status)
+#define b43legacy_set_status(wldev, stat)	do {		\
+		atomic_set(&(wldev)->__init_status, (stat));	\
+		smp_wmb();					\
+					} while (0)
+
+/* *** ---   HOW LOCKING WORKS IN B43legacy   --- ***
+ *
+ * You should always acquire both, wl->mutex and wl->irq_lock unless:
+ * - You don't need to acquire wl->irq_lock, if the interface is stopped.
+ * - You don't need to acquire wl->mutex in the IRQ handler, IRQ tasklet
+ *   and packet TX path (and _ONLY_ there.)
+ */
+
+/* Data structure for one wireless device (802.11 core) */
+struct b43legacy_wldev {
+	struct ssb_device *dev;
+	struct b43legacy_wl *wl;
+
+	/* The device initialization status.
+	 * Use b43legacy_status() to query. */
+	atomic_t __init_status;
+	/* Saved init status for handling suspend. */
+	int suspend_init_status;
+
+	bool __using_pio;	/* Using pio rather than dma. */
+	bool bad_frames_preempt;/* Use "Bad Frames Preemption". */
+	bool dfq_valid;		/* Directed frame queue valid (IBSS PS mode, ATIM). */
+	bool short_preamble;	/* TRUE if using short preamble. */
+	bool radio_hw_enable;	/* State of radio hardware enable bit. */
+
+	/* PHY/Radio device. */
+	struct b43legacy_phy phy;
+	union {
+		/* DMA engines. */
+		struct b43legacy_dma dma;
+		/* PIO engines. */
+		struct b43legacy_pio pio;
+	};
+
+	/* Various statistics about the physical device. */
+	struct b43legacy_stats stats;
+
+	/* The device LEDs. */
+	struct b43legacy_led led_tx;
+	struct b43legacy_led led_rx;
+	struct b43legacy_led led_assoc;
+	struct b43legacy_led led_radio;
+
+	/* Reason code of the last interrupt. */
+	u32 irq_reason;
+	u32 dma_reason[6];
+	/* The currently active generic-interrupt mask. */
+	u32 irq_mask;
+	/* Link Quality calculation context. */
+	struct b43legacy_noise_calculation noisecalc;
+	/* if > 0 MAC is suspended. if == 0 MAC is enabled. */
+	int mac_suspended;
+
+	/* Interrupt Service Routine tasklet (bottom-half) */
+	struct tasklet_struct isr_tasklet;
+
+	/* Periodic tasks */
+	struct delayed_work periodic_work;
+	unsigned int periodic_state;
+
+	struct work_struct restart_work;
+
+	/* encryption/decryption */
+	u16 ktp; /* Key table pointer */
+	u8 max_nr_keys;
+	struct b43legacy_key key[58];
+
+	/* Firmware data */
+	struct b43legacy_firmware fw;
+	const struct firmware *fwp;	/* needed to pass fw pointer */
+
+	/* completion struct for firmware loading */
+	struct completion fw_load_complete;
+
+	/* Devicelist in struct b43legacy_wl (all 802.11 cores) */
+	struct list_head list;
+
+	/* Debugging stuff follows. */
+#ifdef CONFIG_B43LEGACY_DEBUG
+	struct b43legacy_dfsentry *dfsentry;
+#endif
+};
+
+
+static inline
+struct b43legacy_wl *hw_to_b43legacy_wl(struct ieee80211_hw *hw)
+{
+	return hw->priv;
+}
+
+/* Helper function, which returns a boolean.
+ * TRUE, if PIO is used; FALSE, if DMA is used.
+ */
+#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
+static inline
+int b43legacy_using_pio(struct b43legacy_wldev *dev)
+{
+	return dev->__using_pio;
+}
+#elif defined(CONFIG_B43LEGACY_DMA)
+static inline
+int b43legacy_using_pio(struct b43legacy_wldev *dev)
+{
+	return 0;
+}
+#elif defined(CONFIG_B43LEGACY_PIO)
+static inline
+int b43legacy_using_pio(struct b43legacy_wldev *dev)
+{
+	return 1;
+}
+#else
+# error "Using neither DMA nor PIO? Confused..."
+#endif
+
+
+static inline
+struct b43legacy_wldev *dev_to_b43legacy_wldev(struct device *dev)
+{
+	struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
+	return ssb_get_drvdata(ssb_dev);
+}
+
+/* Is the device operating in a specified mode (IEEE80211_IF_TYPE_XXX). */
+static inline
+int b43legacy_is_mode(struct b43legacy_wl *wl, int type)
+{
+	return (wl->operating &&
+		wl->if_type == type);
+}
+
+static inline
+bool is_bcm_board_vendor(struct b43legacy_wldev *dev)
+{
+	return  (dev->dev->bus->boardinfo.vendor == PCI_VENDOR_ID_BROADCOM);
+}
+
+static inline
+u16 b43legacy_read16(struct b43legacy_wldev *dev, u16 offset)
+{
+	return ssb_read16(dev->dev, offset);
+}
+
+static inline
+void b43legacy_write16(struct b43legacy_wldev *dev, u16 offset, u16 value)
+{
+	ssb_write16(dev->dev, offset, value);
+}
+
+static inline
+u32 b43legacy_read32(struct b43legacy_wldev *dev, u16 offset)
+{
+	return ssb_read32(dev->dev, offset);
+}
+
+static inline
+void b43legacy_write32(struct b43legacy_wldev *dev, u16 offset, u32 value)
+{
+	ssb_write32(dev->dev, offset, value);
+}
+
+static inline
+struct b43legacy_lopair *b43legacy_get_lopair(struct b43legacy_phy *phy,
+					      u16 radio_attenuation,
+					      u16 baseband_attenuation)
+{
+	return phy->_lo_pairs + (radio_attenuation
+			+ 14 * (baseband_attenuation / 2));
+}
+
+
+
+/* Message printing */
+__printf(2, 3)
+void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...);
+__printf(2, 3)
+void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...);
+__printf(2, 3)
+void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...);
+#if B43legacy_DEBUG
+__printf(2, 3)
+void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...);
+#else /* DEBUG */
+# define b43legacydbg(wl, fmt...) do { /* nothing */ } while (0)
+#endif /* DEBUG */
+
+/* Macros for printing a value in Q5.2 format */
+#define Q52_FMT		"%u.%u"
+#define Q52_ARG(q52)	((q52) / 4), (((q52) & 3) * 100 / 4)
+
+#endif /* B43legacy_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/debugfs.c b/drivers/net/wireless/broadcom/b43legacy/debugfs.c
new file mode 100644
index 000000000..6b0e8d117
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.c
@@ -0,0 +1,451 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  debugfs driver debugging code
+
+  Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
+
+
+*/
+
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+
+#include "b43legacy.h"
+#include "main.h"
+#include "debugfs.h"
+#include "dma.h"
+#include "pio.h"
+#include "xmit.h"
+
+
+/* The root directory. */
+static struct dentry *rootdir;
+
+struct b43legacy_debugfs_fops {
+	ssize_t (*read)(struct b43legacy_wldev *dev, char *buf, size_t bufsize);
+	int (*write)(struct b43legacy_wldev *dev, const char *buf, size_t count);
+	struct file_operations fops;
+	/* Offset of struct b43legacy_dfs_file in struct b43legacy_dfsentry */
+	size_t file_struct_offset;
+	/* Take wl->irq_lock before calling read/write? */
+	bool take_irqlock;
+};
+
+static inline
+struct b43legacy_dfs_file * fops_to_dfs_file(struct b43legacy_wldev *dev,
+				       const struct b43legacy_debugfs_fops *dfops)
+{
+	void *p;
+
+	p = dev->dfsentry;
+	p += dfops->file_struct_offset;
+
+	return p;
+}
+
+
+#define fappend(fmt, x...)	\
+	do {							\
+		if (bufsize - count)				\
+			count += scnprintf(buf + count,		\
+					  bufsize - count,	\
+					  fmt , ##x);		\
+		else						\
+			printk(KERN_ERR "b43legacy: fappend overflow\n"); \
+	} while (0)
+
+
+/* wl->irq_lock is locked */
+static ssize_t tsf_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	u64 tsf;
+
+	b43legacy_tsf_read(dev, &tsf);
+	fappend("0x%08x%08x\n",
+		(unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
+		(unsigned int)(tsf & 0xFFFFFFFFULL));
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static int tsf_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count)
+{
+	u64 tsf;
+
+	if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1)
+		return -EINVAL;
+	b43legacy_tsf_write(dev, tsf);
+
+	return 0;
+}
+
+/* wl->irq_lock is locked */
+static ssize_t ucode_regs_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	int i;
+
+	for (i = 0; i < 64; i++) {
+		fappend("r%d = 0x%04x\n", i,
+			b43legacy_shm_read16(dev, B43legacy_SHM_WIRELESS, i));
+	}
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static ssize_t shm_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	int i;
+	u16 tmp;
+	__le16 *le16buf = (__le16 *)buf;
+
+	for (i = 0; i < 0x1000; i++) {
+		if (bufsize < sizeof(tmp))
+			break;
+		tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2 * i);
+		le16buf[i] = cpu_to_le16(tmp);
+		count += sizeof(tmp);
+		bufsize -= sizeof(tmp);
+	}
+
+	return count;
+}
+
+static ssize_t txstat_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	struct b43legacy_txstatus_log *log = &dev->dfsentry->txstatlog;
+	ssize_t count = 0;
+	unsigned long flags;
+	int i, idx;
+	struct b43legacy_txstatus *stat;
+
+	spin_lock_irqsave(&log->lock, flags);
+	if (log->end < 0) {
+		fappend("Nothing transmitted, yet\n");
+		goto out_unlock;
+	}
+	fappend("b43legacy TX status reports:\n\n"
+		"index | cookie | seq | phy_stat | frame_count | "
+		"rts_count | supp_reason | pm_indicated | "
+		"intermediate | for_ampdu | acked\n" "---\n");
+	i = log->end + 1;
+	idx = 0;
+	while (1) {
+		if (i == B43legacy_NR_LOGGED_TXSTATUS)
+			i = 0;
+		stat = &(log->log[i]);
+		if (stat->cookie) {
+			fappend("%03d | "
+				"0x%04X | 0x%04X | 0x%02X | "
+				"0x%X | 0x%X | "
+				"%u | %u | "
+				"%u | %u | %u\n",
+				idx,
+				stat->cookie, stat->seq, stat->phy_stat,
+				stat->frame_count, stat->rts_count,
+				stat->supp_reason, stat->pm_indicated,
+				stat->intermediate, stat->for_ampdu,
+				stat->acked);
+			idx++;
+		}
+		if (i == log->end)
+			break;
+		i++;
+	}
+out_unlock:
+	spin_unlock_irqrestore(&log->lock, flags);
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static int restart_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count)
+{
+	int err = 0;
+
+	if (count > 0 && buf[0] == '1') {
+		b43legacy_controller_restart(dev, "manually restarted");
+	} else
+		err = -EINVAL;
+
+	return err;
+}
+
+#undef fappend
+
+static ssize_t b43legacy_debugfs_read(struct file *file, char __user *userbuf,
+				size_t count, loff_t *ppos)
+{
+	struct b43legacy_wldev *dev;
+	struct b43legacy_debugfs_fops *dfops;
+	struct b43legacy_dfs_file *dfile;
+	ssize_t ret;
+	char *buf;
+	const size_t bufsize = 1024 * 16; /* 16 KiB buffer */
+	const size_t buforder = get_order(bufsize);
+	int err = 0;
+
+	if (!count)
+		return 0;
+	dev = file->private_data;
+	if (!dev)
+		return -ENODEV;
+
+	mutex_lock(&dev->wl->mutex);
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43legacy_debugfs_fops, fops);
+	if (!dfops->read) {
+		err = -ENOSYS;
+		goto out_unlock;
+	}
+	dfile = fops_to_dfs_file(dev, dfops);
+
+	if (!dfile->buffer) {
+		buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
+		if (!buf) {
+			err = -ENOMEM;
+			goto out_unlock;
+		}
+		memset(buf, 0, bufsize);
+		if (dfops->take_irqlock) {
+			spin_lock_irq(&dev->wl->irq_lock);
+			ret = dfops->read(dev, buf, bufsize);
+			spin_unlock_irq(&dev->wl->irq_lock);
+		} else
+			ret = dfops->read(dev, buf, bufsize);
+		if (ret <= 0) {
+			free_pages((unsigned long)buf, buforder);
+			err = ret;
+			goto out_unlock;
+		}
+		dfile->data_len = ret;
+		dfile->buffer = buf;
+	}
+
+	ret = simple_read_from_buffer(userbuf, count, ppos,
+				      dfile->buffer,
+				      dfile->data_len);
+	if (*ppos >= dfile->data_len) {
+		free_pages((unsigned long)dfile->buffer, buforder);
+		dfile->buffer = NULL;
+		dfile->data_len = 0;
+	}
+out_unlock:
+	mutex_unlock(&dev->wl->mutex);
+
+	return err ? err : ret;
+}
+
+static ssize_t b43legacy_debugfs_write(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct b43legacy_wldev *dev;
+	struct b43legacy_debugfs_fops *dfops;
+	char *buf;
+	int err = 0;
+
+	if (!count)
+		return 0;
+	if (count > PAGE_SIZE)
+		return -E2BIG;
+	dev = file->private_data;
+	if (!dev)
+		return -ENODEV;
+
+	mutex_lock(&dev->wl->mutex);
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43legacy_debugfs_fops, fops);
+	if (!dfops->write) {
+		err = -ENOSYS;
+		goto out_unlock;
+	}
+
+	buf = (char *)get_zeroed_page(GFP_KERNEL);
+	if (!buf) {
+		err = -ENOMEM;
+		goto out_unlock;
+	}
+	if (copy_from_user(buf, userbuf, count)) {
+		err = -EFAULT;
+		goto out_freepage;
+	}
+	if (dfops->take_irqlock) {
+		spin_lock_irq(&dev->wl->irq_lock);
+		err = dfops->write(dev, buf, count);
+		spin_unlock_irq(&dev->wl->irq_lock);
+	} else
+		err = dfops->write(dev, buf, count);
+	if (err)
+		goto out_freepage;
+
+out_freepage:
+	free_page((unsigned long)buf);
+out_unlock:
+	mutex_unlock(&dev->wl->mutex);
+
+	return err ? err : count;
+}
+
+
+#define B43legacy_DEBUGFS_FOPS(name, _read, _write, _take_irqlock)	\
+	static struct b43legacy_debugfs_fops fops_##name = {		\
+		.read	= _read,				\
+		.write	= _write,				\
+		.fops	= {					\
+			.open	= simple_open,				\
+			.read	= b43legacy_debugfs_read,		\
+			.write	= b43legacy_debugfs_write,		\
+			.llseek = generic_file_llseek,			\
+		},						\
+		.file_struct_offset = offsetof(struct b43legacy_dfsentry, \
+					       file_##name),	\
+		.take_irqlock	= _take_irqlock,		\
+	}
+
+B43legacy_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
+B43legacy_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1);
+B43legacy_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1);
+B43legacy_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
+B43legacy_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
+
+
+int b43legacy_debug(struct b43legacy_wldev *dev, enum b43legacy_dyndbg feature)
+{
+	return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
+}
+
+static void b43legacy_add_dynamic_debug(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e = dev->dfsentry;
+
+#define add_dyn_dbg(name, id, initstate) do {			\
+	e->dyn_debug[id] = (initstate);				\
+	debugfs_create_bool(name, 0600, e->subdir,		\
+			    &(e->dyn_debug[id]));		\
+	} while (0)
+
+	add_dyn_dbg("debug_xmitpower", B43legacy_DBG_XMITPOWER, false);
+	add_dyn_dbg("debug_dmaoverflow", B43legacy_DBG_DMAOVERFLOW, false);
+	add_dyn_dbg("debug_dmaverbose", B43legacy_DBG_DMAVERBOSE, false);
+	add_dyn_dbg("debug_pwork_fast", B43legacy_DBG_PWORK_FAST, false);
+	add_dyn_dbg("debug_pwork_stop", B43legacy_DBG_PWORK_STOP, false);
+
+#undef add_dyn_dbg
+}
+
+void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e;
+	struct b43legacy_txstatus_log *log;
+	char devdir[16];
+
+	B43legacy_WARN_ON(!dev);
+	e = kzalloc(sizeof(*e), GFP_KERNEL);
+	if (!e) {
+		b43legacyerr(dev->wl, "debugfs: add device OOM\n");
+		return;
+	}
+	e->dev = dev;
+	log = &e->txstatlog;
+	log->log = kcalloc(B43legacy_NR_LOGGED_TXSTATUS,
+			   sizeof(struct b43legacy_txstatus), GFP_KERNEL);
+	if (!log->log) {
+		b43legacyerr(dev->wl, "debugfs: add device txstatus OOM\n");
+		kfree(e);
+		return;
+	}
+	log->end = -1;
+	spin_lock_init(&log->lock);
+
+	dev->dfsentry = e;
+
+	snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
+	e->subdir = debugfs_create_dir(devdir, rootdir);
+
+#define ADD_FILE(name, mode)	\
+	do {							\
+		debugfs_create_file(__stringify(name), mode,	\
+				    e->subdir, dev,		\
+				    &fops_##name.fops);		\
+	} while (0)
+
+
+	ADD_FILE(tsf, 0600);
+	ADD_FILE(ucode_regs, 0400);
+	ADD_FILE(shm, 0400);
+	ADD_FILE(txstat, 0400);
+	ADD_FILE(restart, 0200);
+
+#undef ADD_FILE
+
+	b43legacy_add_dynamic_debug(dev);
+}
+
+void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e;
+
+	if (!dev)
+		return;
+	e = dev->dfsentry;
+	if (!e)
+		return;
+
+	debugfs_remove(e->subdir);
+	kfree(e->txstatlog.log);
+	kfree(e);
+}
+
+void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev,
+			    const struct b43legacy_txstatus *status)
+{
+	struct b43legacy_dfsentry *e = dev->dfsentry;
+	struct b43legacy_txstatus_log *log;
+	struct b43legacy_txstatus *cur;
+	int i;
+
+	if (!e)
+		return;
+	log = &e->txstatlog;
+	B43legacy_WARN_ON(!irqs_disabled());
+	spin_lock(&log->lock);
+	i = log->end + 1;
+	if (i == B43legacy_NR_LOGGED_TXSTATUS)
+		i = 0;
+	log->end = i;
+	cur = &(log->log[i]);
+	memcpy(cur, status, sizeof(*cur));
+	spin_unlock(&log->lock);
+}
+
+void b43legacy_debugfs_init(void)
+{
+	rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+}
+
+void b43legacy_debugfs_exit(void)
+{
+	debugfs_remove(rootdir);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/debugfs.h b/drivers/net/wireless/broadcom/b43legacy/debugfs.h
new file mode 100644
index 000000000..924130880
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_DEBUGFS_H_
+#define B43legacy_DEBUGFS_H_
+
+struct b43legacy_wldev;
+struct b43legacy_txstatus;
+
+enum b43legacy_dyndbg { /* Dynamic debugging features */
+	B43legacy_DBG_XMITPOWER,
+	B43legacy_DBG_DMAOVERFLOW,
+	B43legacy_DBG_DMAVERBOSE,
+	B43legacy_DBG_PWORK_FAST,
+	B43legacy_DBG_PWORK_STOP,
+	__B43legacy_NR_DYNDBG,
+};
+
+
+#ifdef CONFIG_B43LEGACY_DEBUG
+
+struct dentry;
+
+#define B43legacy_NR_LOGGED_TXSTATUS	100
+
+struct b43legacy_txstatus_log {
+	struct b43legacy_txstatus *log;
+	int end;
+	spinlock_t lock;	/* lock for debugging */
+};
+
+struct b43legacy_dfs_file {
+	char *buffer;
+	size_t data_len;
+};
+
+struct b43legacy_dfsentry {
+	struct b43legacy_wldev *dev;
+	struct dentry *subdir;
+
+	struct b43legacy_dfs_file file_tsf;
+	struct b43legacy_dfs_file file_ucode_regs;
+	struct b43legacy_dfs_file file_shm;
+	struct b43legacy_dfs_file file_txstat;
+	struct b43legacy_dfs_file file_txpower_g;
+	struct b43legacy_dfs_file file_restart;
+	struct b43legacy_dfs_file file_loctls;
+
+	struct b43legacy_txstatus_log txstatlog;
+
+	/* Enabled/Disabled list for the dynamic debugging features. */
+	bool dyn_debug[__B43legacy_NR_DYNDBG];
+};
+
+int b43legacy_debug(struct b43legacy_wldev *dev,
+		    enum b43legacy_dyndbg feature);
+
+void b43legacy_debugfs_init(void);
+void b43legacy_debugfs_exit(void);
+void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev);
+void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev);
+void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev,
+				  const struct b43legacy_txstatus *status);
+
+#else /* CONFIG_B43LEGACY_DEBUG*/
+
+static inline
+int b43legacy_debug(struct b43legacy_wldev *dev,
+		    enum b43legacy_dyndbg feature)
+{
+	return 0;
+}
+
+static inline
+void b43legacy_debugfs_init(void) { }
+static inline
+void b43legacy_debugfs_exit(void) { }
+static inline
+void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev) { }
+static inline
+void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev) { }
+static inline
+void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev,
+				  const struct b43legacy_txstatus *status)
+				  { }
+
+#endif /* CONFIG_B43LEGACY_DEBUG*/
+
+#endif /* B43legacy_DEBUGFS_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/dma.c b/drivers/net/wireless/broadcom/b43legacy/dma.c
new file mode 100644
index 000000000..6869f2bf1
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/dma.c
@@ -0,0 +1,1378 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  DMA ringbuffer and descriptor allocation/management
+
+  Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
+
+  Some code in this file is derived from the b44.c driver
+  Copyright (C) 2002 David S. Miller
+  Copyright (C) Pekka Pietikainen
+
+
+*/
+
+#include "b43legacy.h"
+#include "dma.h"
+#include "main.h"
+#include "debugfs.h"
+#include "xmit.h"
+
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <net/dst.h>
+
+/* 32bit DMA ops. */
+static
+struct b43legacy_dmadesc32 *op32_idx2desc(struct b43legacy_dmaring *ring,
+					  int slot,
+					  struct b43legacy_dmadesc_meta **meta)
+{
+	struct b43legacy_dmadesc32 *desc;
+
+	*meta = &(ring->meta[slot]);
+	desc = ring->descbase;
+	desc = &(desc[slot]);
+
+	return desc;
+}
+
+static void op32_fill_descriptor(struct b43legacy_dmaring *ring,
+				 struct b43legacy_dmadesc32 *desc,
+				 dma_addr_t dmaaddr, u16 bufsize,
+				 int start, int end, int irq)
+{
+	struct b43legacy_dmadesc32 *descbase = ring->descbase;
+	int slot;
+	u32 ctl;
+	u32 addr;
+	u32 addrext;
+
+	slot = (int)(desc - descbase);
+	B43legacy_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
+
+	addr = (u32)(dmaaddr & ~SSB_DMA_TRANSLATION_MASK);
+	addrext = (u32)(dmaaddr & SSB_DMA_TRANSLATION_MASK)
+		   >> SSB_DMA_TRANSLATION_SHIFT;
+	addr |= ring->dev->dma.translation;
+	ctl = (bufsize - ring->frameoffset)
+	      & B43legacy_DMA32_DCTL_BYTECNT;
+	if (slot == ring->nr_slots - 1)
+		ctl |= B43legacy_DMA32_DCTL_DTABLEEND;
+	if (start)
+		ctl |= B43legacy_DMA32_DCTL_FRAMESTART;
+	if (end)
+		ctl |= B43legacy_DMA32_DCTL_FRAMEEND;
+	if (irq)
+		ctl |= B43legacy_DMA32_DCTL_IRQ;
+	ctl |= (addrext << B43legacy_DMA32_DCTL_ADDREXT_SHIFT)
+	       & B43legacy_DMA32_DCTL_ADDREXT_MASK;
+
+	desc->control = cpu_to_le32(ctl);
+	desc->address = cpu_to_le32(addr);
+}
+
+static void op32_poke_tx(struct b43legacy_dmaring *ring, int slot)
+{
+	b43legacy_dma_write(ring, B43legacy_DMA32_TXINDEX,
+			    (u32)(slot * sizeof(struct b43legacy_dmadesc32)));
+}
+
+static void op32_tx_suspend(struct b43legacy_dmaring *ring)
+{
+	b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL,
+			    b43legacy_dma_read(ring, B43legacy_DMA32_TXCTL)
+			    | B43legacy_DMA32_TXSUSPEND);
+}
+
+static void op32_tx_resume(struct b43legacy_dmaring *ring)
+{
+	b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL,
+			    b43legacy_dma_read(ring, B43legacy_DMA32_TXCTL)
+			    & ~B43legacy_DMA32_TXSUSPEND);
+}
+
+static int op32_get_current_rxslot(struct b43legacy_dmaring *ring)
+{
+	u32 val;
+
+	val = b43legacy_dma_read(ring, B43legacy_DMA32_RXSTATUS);
+	val &= B43legacy_DMA32_RXDPTR;
+
+	return (val / sizeof(struct b43legacy_dmadesc32));
+}
+
+static void op32_set_current_rxslot(struct b43legacy_dmaring *ring,
+				    int slot)
+{
+	b43legacy_dma_write(ring, B43legacy_DMA32_RXINDEX,
+			    (u32)(slot * sizeof(struct b43legacy_dmadesc32)));
+}
+
+static inline int free_slots(struct b43legacy_dmaring *ring)
+{
+	return (ring->nr_slots - ring->used_slots);
+}
+
+static inline int next_slot(struct b43legacy_dmaring *ring, int slot)
+{
+	B43legacy_WARN_ON(!(slot >= -1 && slot <= ring->nr_slots - 1));
+	if (slot == ring->nr_slots - 1)
+		return 0;
+	return slot + 1;
+}
+
+static inline int prev_slot(struct b43legacy_dmaring *ring, int slot)
+{
+	B43legacy_WARN_ON(!(slot >= 0 && slot <= ring->nr_slots - 1));
+	if (slot == 0)
+		return ring->nr_slots - 1;
+	return slot - 1;
+}
+
+#ifdef CONFIG_B43LEGACY_DEBUG
+static void update_max_used_slots(struct b43legacy_dmaring *ring,
+				  int current_used_slots)
+{
+	if (current_used_slots <= ring->max_used_slots)
+		return;
+	ring->max_used_slots = current_used_slots;
+	if (b43legacy_debug(ring->dev, B43legacy_DBG_DMAVERBOSE))
+		b43legacydbg(ring->dev->wl,
+		       "max_used_slots increased to %d on %s ring %d\n",
+		       ring->max_used_slots,
+		       ring->tx ? "TX" : "RX",
+		       ring->index);
+}
+#else
+static inline
+void update_max_used_slots(struct b43legacy_dmaring *ring,
+			   int current_used_slots)
+{ }
+#endif /* DEBUG */
+
+/* Request a slot for usage. */
+static inline
+int request_slot(struct b43legacy_dmaring *ring)
+{
+	int slot;
+
+	B43legacy_WARN_ON(!ring->tx);
+	B43legacy_WARN_ON(ring->stopped);
+	B43legacy_WARN_ON(free_slots(ring) == 0);
+
+	slot = next_slot(ring, ring->current_slot);
+	ring->current_slot = slot;
+	ring->used_slots++;
+
+	update_max_used_slots(ring, ring->used_slots);
+
+	return slot;
+}
+
+/* Mac80211-queue to b43legacy-ring mapping */
+static struct b43legacy_dmaring *priority_to_txring(
+						struct b43legacy_wldev *dev,
+						int queue_priority)
+{
+	struct b43legacy_dmaring *ring;
+
+/*FIXME: For now we always run on TX-ring-1 */
+return dev->dma.tx_ring1;
+
+	/* 0 = highest priority */
+	switch (queue_priority) {
+	default:
+		B43legacy_WARN_ON(1);
+		fallthrough;
+	case 0:
+		ring = dev->dma.tx_ring3;
+		break;
+	case 1:
+		ring = dev->dma.tx_ring2;
+		break;
+	case 2:
+		ring = dev->dma.tx_ring1;
+		break;
+	case 3:
+		ring = dev->dma.tx_ring0;
+		break;
+	case 4:
+		ring = dev->dma.tx_ring4;
+		break;
+	case 5:
+		ring = dev->dma.tx_ring5;
+		break;
+	}
+
+	return ring;
+}
+
+static u16 b43legacy_dmacontroller_base(enum b43legacy_dmatype type,
+					int controller_idx)
+{
+	static const u16 map32[] = {
+		B43legacy_MMIO_DMA32_BASE0,
+		B43legacy_MMIO_DMA32_BASE1,
+		B43legacy_MMIO_DMA32_BASE2,
+		B43legacy_MMIO_DMA32_BASE3,
+		B43legacy_MMIO_DMA32_BASE4,
+		B43legacy_MMIO_DMA32_BASE5,
+	};
+
+	B43legacy_WARN_ON(!(controller_idx >= 0 &&
+			  controller_idx < ARRAY_SIZE(map32)));
+	return map32[controller_idx];
+}
+
+static inline
+dma_addr_t map_descbuffer(struct b43legacy_dmaring *ring,
+			  unsigned char *buf,
+			  size_t len,
+			  int tx)
+{
+	dma_addr_t dmaaddr;
+
+	if (tx)
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					     buf, len,
+					     DMA_TO_DEVICE);
+	else
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					     buf, len,
+					     DMA_FROM_DEVICE);
+
+	return dmaaddr;
+}
+
+static inline
+void unmap_descbuffer(struct b43legacy_dmaring *ring,
+		      dma_addr_t addr,
+		      size_t len,
+		      int tx)
+{
+	if (tx)
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				     addr, len,
+				     DMA_TO_DEVICE);
+	else
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				     addr, len,
+				     DMA_FROM_DEVICE);
+}
+
+static inline
+void sync_descbuffer_for_cpu(struct b43legacy_dmaring *ring,
+			     dma_addr_t addr,
+			     size_t len)
+{
+	B43legacy_WARN_ON(ring->tx);
+
+	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
+				addr, len, DMA_FROM_DEVICE);
+}
+
+static inline
+void sync_descbuffer_for_device(struct b43legacy_dmaring *ring,
+				dma_addr_t addr,
+				size_t len)
+{
+	B43legacy_WARN_ON(ring->tx);
+
+	dma_sync_single_for_device(ring->dev->dev->dma_dev,
+				   addr, len, DMA_FROM_DEVICE);
+}
+
+static inline
+void free_descriptor_buffer(struct b43legacy_dmaring *ring,
+			    struct b43legacy_dmadesc_meta *meta,
+			    int irq_context)
+{
+	if (meta->skb) {
+		if (irq_context)
+			dev_kfree_skb_irq(meta->skb);
+		else
+			dev_kfree_skb(meta->skb);
+		meta->skb = NULL;
+	}
+}
+
+static int alloc_ringmemory(struct b43legacy_dmaring *ring)
+{
+	/* GFP flags must match the flags in free_ringmemory()! */
+	ring->descbase = dma_alloc_coherent(ring->dev->dev->dma_dev,
+					    B43legacy_DMA_RINGMEMSIZE,
+					    &(ring->dmabase), GFP_KERNEL);
+	if (!ring->descbase)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void free_ringmemory(struct b43legacy_dmaring *ring)
+{
+	dma_free_coherent(ring->dev->dev->dma_dev, B43legacy_DMA_RINGMEMSIZE,
+			  ring->descbase, ring->dmabase);
+}
+
+/* Reset the RX DMA channel */
+static int b43legacy_dmacontroller_rx_reset(struct b43legacy_wldev *dev,
+					    u16 mmio_base,
+					    enum b43legacy_dmatype type)
+{
+	int i;
+	u32 value;
+	u16 offset;
+
+	might_sleep();
+
+	offset = B43legacy_DMA32_RXCTL;
+	b43legacy_write32(dev, mmio_base + offset, 0);
+	for (i = 0; i < 10; i++) {
+		offset = B43legacy_DMA32_RXSTATUS;
+		value = b43legacy_read32(dev, mmio_base + offset);
+		value &= B43legacy_DMA32_RXSTATE;
+		if (value == B43legacy_DMA32_RXSTAT_DISABLED) {
+			i = -1;
+			break;
+		}
+		msleep(1);
+	}
+	if (i != -1) {
+		b43legacyerr(dev->wl, "DMA RX reset timed out\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/* Reset the RX DMA channel */
+static int b43legacy_dmacontroller_tx_reset(struct b43legacy_wldev *dev,
+					    u16 mmio_base,
+					    enum b43legacy_dmatype type)
+{
+	int i;
+	u32 value;
+	u16 offset;
+
+	might_sleep();
+
+	for (i = 0; i < 10; i++) {
+		offset = B43legacy_DMA32_TXSTATUS;
+		value = b43legacy_read32(dev, mmio_base + offset);
+		value &= B43legacy_DMA32_TXSTATE;
+		if (value == B43legacy_DMA32_TXSTAT_DISABLED ||
+		    value == B43legacy_DMA32_TXSTAT_IDLEWAIT ||
+		    value == B43legacy_DMA32_TXSTAT_STOPPED)
+			break;
+		msleep(1);
+	}
+	offset = B43legacy_DMA32_TXCTL;
+	b43legacy_write32(dev, mmio_base + offset, 0);
+	for (i = 0; i < 10; i++) {
+		offset = B43legacy_DMA32_TXSTATUS;
+		value = b43legacy_read32(dev, mmio_base + offset);
+		value &= B43legacy_DMA32_TXSTATE;
+		if (value == B43legacy_DMA32_TXSTAT_DISABLED) {
+			i = -1;
+			break;
+		}
+		msleep(1);
+	}
+	if (i != -1) {
+		b43legacyerr(dev->wl, "DMA TX reset timed out\n");
+		return -ENODEV;
+	}
+	/* ensure the reset is completed. */
+	msleep(1);
+
+	return 0;
+}
+
+/* Check if a DMA mapping address is invalid. */
+static bool b43legacy_dma_mapping_error(struct b43legacy_dmaring *ring,
+					 dma_addr_t addr,
+					 size_t buffersize,
+					 bool dma_to_device)
+{
+	if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
+		return true;
+
+	switch (ring->type) {
+	case B43legacy_DMA_30BIT:
+		if ((u64)addr + buffersize > (1ULL << 30))
+			goto address_error;
+		break;
+	case B43legacy_DMA_32BIT:
+		if ((u64)addr + buffersize > (1ULL << 32))
+			goto address_error;
+		break;
+	}
+
+	/* The address is OK. */
+	return false;
+
+address_error:
+	/* We can't support this address. Unmap it again. */
+	unmap_descbuffer(ring, addr, buffersize, dma_to_device);
+
+	return true;
+}
+
+static int setup_rx_descbuffer(struct b43legacy_dmaring *ring,
+			       struct b43legacy_dmadesc32 *desc,
+			       struct b43legacy_dmadesc_meta *meta,
+			       gfp_t gfp_flags)
+{
+	struct b43legacy_rxhdr_fw3 *rxhdr;
+	struct b43legacy_hwtxstatus *txstat;
+	dma_addr_t dmaaddr;
+	struct sk_buff *skb;
+
+	B43legacy_WARN_ON(ring->tx);
+
+	skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
+	if (unlikely(!skb))
+		return -ENOMEM;
+	dmaaddr = map_descbuffer(ring, skb->data,
+				 ring->rx_buffersize, 0);
+	if (b43legacy_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) {
+		/* ugh. try to realloc in zone_dma */
+		gfp_flags |= GFP_DMA;
+
+		dev_kfree_skb_any(skb);
+
+		skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
+		if (unlikely(!skb))
+			return -ENOMEM;
+		dmaaddr = map_descbuffer(ring, skb->data,
+					 ring->rx_buffersize, 0);
+	}
+
+	if (b43legacy_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) {
+		dev_kfree_skb_any(skb);
+		return -EIO;
+	}
+
+	meta->skb = skb;
+	meta->dmaaddr = dmaaddr;
+	op32_fill_descriptor(ring, desc, dmaaddr, ring->rx_buffersize, 0, 0, 0);
+
+	rxhdr = (struct b43legacy_rxhdr_fw3 *)(skb->data);
+	rxhdr->frame_len = 0;
+	txstat = (struct b43legacy_hwtxstatus *)(skb->data);
+	txstat->cookie = 0;
+
+	return 0;
+}
+
+/* Allocate the initial descbuffers.
+ * This is used for an RX ring only.
+ */
+static int alloc_initial_descbuffers(struct b43legacy_dmaring *ring)
+{
+	int i;
+	int err = -ENOMEM;
+	struct b43legacy_dmadesc32 *desc;
+	struct b43legacy_dmadesc_meta *meta;
+
+	for (i = 0; i < ring->nr_slots; i++) {
+		desc = op32_idx2desc(ring, i, &meta);
+
+		err = setup_rx_descbuffer(ring, desc, meta, GFP_KERNEL);
+		if (err) {
+			b43legacyerr(ring->dev->wl,
+			       "Failed to allocate initial descbuffers\n");
+			goto err_unwind;
+		}
+	}
+	mb(); /* all descbuffer setup before next line */
+	ring->used_slots = ring->nr_slots;
+	err = 0;
+out:
+	return err;
+
+err_unwind:
+	for (i--; i >= 0; i--) {
+		desc = op32_idx2desc(ring, i, &meta);
+
+		unmap_descbuffer(ring, meta->dmaaddr, ring->rx_buffersize, 0);
+		dev_kfree_skb(meta->skb);
+	}
+	goto out;
+}
+
+/* Do initial setup of the DMA controller.
+ * Reset the controller, write the ring busaddress
+ * and switch the "enable" bit on.
+ */
+static int dmacontroller_setup(struct b43legacy_dmaring *ring)
+{
+	int err = 0;
+	u32 value;
+	u32 addrext;
+	u32 trans = ring->dev->dma.translation;
+	u32 ringbase = (u32)(ring->dmabase);
+
+	if (ring->tx) {
+		addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
+			  >> SSB_DMA_TRANSLATION_SHIFT;
+		value = B43legacy_DMA32_TXENABLE;
+		value |= (addrext << B43legacy_DMA32_TXADDREXT_SHIFT)
+			& B43legacy_DMA32_TXADDREXT_MASK;
+		b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL, value);
+		b43legacy_dma_write(ring, B43legacy_DMA32_TXRING,
+				    (ringbase & ~SSB_DMA_TRANSLATION_MASK)
+				    | trans);
+	} else {
+		err = alloc_initial_descbuffers(ring);
+		if (err)
+			goto out;
+
+		addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
+			  >> SSB_DMA_TRANSLATION_SHIFT;
+		value = (ring->frameoffset <<
+			 B43legacy_DMA32_RXFROFF_SHIFT);
+		value |= B43legacy_DMA32_RXENABLE;
+		value |= (addrext << B43legacy_DMA32_RXADDREXT_SHIFT)
+			 & B43legacy_DMA32_RXADDREXT_MASK;
+		b43legacy_dma_write(ring, B43legacy_DMA32_RXCTL, value);
+		b43legacy_dma_write(ring, B43legacy_DMA32_RXRING,
+				    (ringbase & ~SSB_DMA_TRANSLATION_MASK)
+				    | trans);
+		b43legacy_dma_write(ring, B43legacy_DMA32_RXINDEX, 200);
+	}
+
+out:
+	return err;
+}
+
+/* Shutdown the DMA controller. */
+static void dmacontroller_cleanup(struct b43legacy_dmaring *ring)
+{
+	if (ring->tx) {
+		b43legacy_dmacontroller_tx_reset(ring->dev, ring->mmio_base,
+						 ring->type);
+		b43legacy_dma_write(ring, B43legacy_DMA32_TXRING, 0);
+	} else {
+		b43legacy_dmacontroller_rx_reset(ring->dev, ring->mmio_base,
+						 ring->type);
+		b43legacy_dma_write(ring, B43legacy_DMA32_RXRING, 0);
+	}
+}
+
+static void free_all_descbuffers(struct b43legacy_dmaring *ring)
+{
+	struct b43legacy_dmadesc_meta *meta;
+	int i;
+
+	if (!ring->used_slots)
+		return;
+	for (i = 0; i < ring->nr_slots; i++) {
+		op32_idx2desc(ring, i, &meta);
+
+		if (!meta->skb) {
+			B43legacy_WARN_ON(!ring->tx);
+			continue;
+		}
+		if (ring->tx)
+			unmap_descbuffer(ring, meta->dmaaddr,
+					 meta->skb->len, 1);
+		else
+			unmap_descbuffer(ring, meta->dmaaddr,
+					 ring->rx_buffersize, 0);
+		free_descriptor_buffer(ring, meta, 0);
+	}
+}
+
+static enum b43legacy_dmatype b43legacy_engine_type(struct b43legacy_wldev *dev)
+{
+	u32 tmp;
+	u16 mmio_base;
+
+	mmio_base = b43legacy_dmacontroller_base(0, 0);
+	b43legacy_write32(dev,
+			mmio_base + B43legacy_DMA32_TXCTL,
+			B43legacy_DMA32_TXADDREXT_MASK);
+	tmp = b43legacy_read32(dev, mmio_base +
+			       B43legacy_DMA32_TXCTL);
+	if (tmp & B43legacy_DMA32_TXADDREXT_MASK)
+		return B43legacy_DMA_32BIT;
+	return B43legacy_DMA_30BIT;
+}
+
+/* Main initialization function. */
+static
+struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
+						  int controller_index,
+						  int for_tx,
+						  enum b43legacy_dmatype type)
+{
+	struct b43legacy_dmaring *ring;
+	int err;
+	int nr_slots;
+	dma_addr_t dma_test;
+
+	ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+	if (!ring)
+		goto out;
+	ring->type = type;
+	ring->dev = dev;
+
+	nr_slots = B43legacy_RXRING_SLOTS;
+	if (for_tx)
+		nr_slots = B43legacy_TXRING_SLOTS;
+
+	ring->meta = kcalloc(nr_slots, sizeof(struct b43legacy_dmadesc_meta),
+			     GFP_KERNEL);
+	if (!ring->meta)
+		goto err_kfree_ring;
+	if (for_tx) {
+		ring->txhdr_cache = kcalloc(nr_slots,
+					sizeof(struct b43legacy_txhdr_fw3),
+					GFP_KERNEL);
+		if (!ring->txhdr_cache)
+			goto err_kfree_meta;
+
+		/* test for ability to dma to txhdr_cache */
+		dma_test = dma_map_single(dev->dev->dma_dev, ring->txhdr_cache,
+					      sizeof(struct b43legacy_txhdr_fw3),
+					      DMA_TO_DEVICE);
+
+		if (b43legacy_dma_mapping_error(ring, dma_test,
+					sizeof(struct b43legacy_txhdr_fw3), 1)) {
+			/* ugh realloc */
+			kfree(ring->txhdr_cache);
+			ring->txhdr_cache = kcalloc(nr_slots,
+					sizeof(struct b43legacy_txhdr_fw3),
+					GFP_KERNEL | GFP_DMA);
+			if (!ring->txhdr_cache)
+				goto err_kfree_meta;
+
+			dma_test = dma_map_single(dev->dev->dma_dev,
+					ring->txhdr_cache,
+					sizeof(struct b43legacy_txhdr_fw3),
+					DMA_TO_DEVICE);
+
+			if (b43legacy_dma_mapping_error(ring, dma_test,
+					sizeof(struct b43legacy_txhdr_fw3), 1))
+				goto err_kfree_txhdr_cache;
+		}
+
+		dma_unmap_single(dev->dev->dma_dev, dma_test,
+				 sizeof(struct b43legacy_txhdr_fw3),
+				 DMA_TO_DEVICE);
+	}
+
+	ring->nr_slots = nr_slots;
+	ring->mmio_base = b43legacy_dmacontroller_base(type, controller_index);
+	ring->index = controller_index;
+	if (for_tx) {
+		ring->tx = true;
+		ring->current_slot = -1;
+	} else {
+		if (ring->index == 0) {
+			ring->rx_buffersize = B43legacy_DMA0_RX_BUFFERSIZE;
+			ring->frameoffset = B43legacy_DMA0_RX_FRAMEOFFSET;
+		} else if (ring->index == 3) {
+			ring->rx_buffersize = B43legacy_DMA3_RX_BUFFERSIZE;
+			ring->frameoffset = B43legacy_DMA3_RX_FRAMEOFFSET;
+		} else
+			B43legacy_WARN_ON(1);
+	}
+#ifdef CONFIG_B43LEGACY_DEBUG
+	ring->last_injected_overflow = jiffies;
+#endif
+
+	err = alloc_ringmemory(ring);
+	if (err)
+		goto err_kfree_txhdr_cache;
+	err = dmacontroller_setup(ring);
+	if (err)
+		goto err_free_ringmemory;
+
+out:
+	return ring;
+
+err_free_ringmemory:
+	free_ringmemory(ring);
+err_kfree_txhdr_cache:
+	kfree(ring->txhdr_cache);
+err_kfree_meta:
+	kfree(ring->meta);
+err_kfree_ring:
+	kfree(ring);
+	ring = NULL;
+	goto out;
+}
+
+/* Main cleanup function. */
+static void b43legacy_destroy_dmaring(struct b43legacy_dmaring *ring)
+{
+	if (!ring)
+		return;
+
+	b43legacydbg(ring->dev->wl, "DMA-%u 0x%04X (%s) max used slots:"
+		     " %d/%d\n", (unsigned int)(ring->type), ring->mmio_base,
+		     (ring->tx) ? "TX" : "RX", ring->max_used_slots,
+		     ring->nr_slots);
+	/* Device IRQs are disabled prior entering this function,
+	 * so no need to take care of concurrency with rx handler stuff.
+	 */
+	dmacontroller_cleanup(ring);
+	free_all_descbuffers(ring);
+	free_ringmemory(ring);
+
+	kfree(ring->txhdr_cache);
+	kfree(ring->meta);
+	kfree(ring);
+}
+
+void b43legacy_dma_free(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dma *dma;
+
+	if (b43legacy_using_pio(dev))
+		return;
+	dma = &dev->dma;
+
+	b43legacy_destroy_dmaring(dma->rx_ring3);
+	dma->rx_ring3 = NULL;
+	b43legacy_destroy_dmaring(dma->rx_ring0);
+	dma->rx_ring0 = NULL;
+
+	b43legacy_destroy_dmaring(dma->tx_ring5);
+	dma->tx_ring5 = NULL;
+	b43legacy_destroy_dmaring(dma->tx_ring4);
+	dma->tx_ring4 = NULL;
+	b43legacy_destroy_dmaring(dma->tx_ring3);
+	dma->tx_ring3 = NULL;
+	b43legacy_destroy_dmaring(dma->tx_ring2);
+	dma->tx_ring2 = NULL;
+	b43legacy_destroy_dmaring(dma->tx_ring1);
+	dma->tx_ring1 = NULL;
+	b43legacy_destroy_dmaring(dma->tx_ring0);
+	dma->tx_ring0 = NULL;
+}
+
+int b43legacy_dma_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dma *dma = &dev->dma;
+	struct b43legacy_dmaring *ring;
+	enum b43legacy_dmatype type = b43legacy_engine_type(dev);
+	int err;
+
+	err = dma_set_mask_and_coherent(dev->dev->dma_dev, DMA_BIT_MASK(type));
+	if (err) {
+#ifdef CONFIG_B43LEGACY_PIO
+		b43legacywarn(dev->wl, "DMA for this device not supported. "
+			"Falling back to PIO\n");
+		dev->__using_pio = true;
+		return -EAGAIN;
+#else
+		b43legacyerr(dev->wl, "DMA for this device not supported and "
+		       "no PIO support compiled in\n");
+		return -EOPNOTSUPP;
+#endif
+	}
+	dma->translation = ssb_dma_translation(dev->dev);
+
+	err = -ENOMEM;
+	/* setup TX DMA channels. */
+	ring = b43legacy_setup_dmaring(dev, 0, 1, type);
+	if (!ring)
+		goto out;
+	dma->tx_ring0 = ring;
+
+	ring = b43legacy_setup_dmaring(dev, 1, 1, type);
+	if (!ring)
+		goto err_destroy_tx0;
+	dma->tx_ring1 = ring;
+
+	ring = b43legacy_setup_dmaring(dev, 2, 1, type);
+	if (!ring)
+		goto err_destroy_tx1;
+	dma->tx_ring2 = ring;
+
+	ring = b43legacy_setup_dmaring(dev, 3, 1, type);
+	if (!ring)
+		goto err_destroy_tx2;
+	dma->tx_ring3 = ring;
+
+	ring = b43legacy_setup_dmaring(dev, 4, 1, type);
+	if (!ring)
+		goto err_destroy_tx3;
+	dma->tx_ring4 = ring;
+
+	ring = b43legacy_setup_dmaring(dev, 5, 1, type);
+	if (!ring)
+		goto err_destroy_tx4;
+	dma->tx_ring5 = ring;
+
+	/* setup RX DMA channels. */
+	ring = b43legacy_setup_dmaring(dev, 0, 0, type);
+	if (!ring)
+		goto err_destroy_tx5;
+	dma->rx_ring0 = ring;
+
+	if (dev->dev->id.revision < 5) {
+		ring = b43legacy_setup_dmaring(dev, 3, 0, type);
+		if (!ring)
+			goto err_destroy_rx0;
+		dma->rx_ring3 = ring;
+	}
+
+	b43legacydbg(dev->wl, "%u-bit DMA initialized\n", (unsigned int)type);
+	err = 0;
+out:
+	return err;
+
+err_destroy_rx0:
+	b43legacy_destroy_dmaring(dma->rx_ring0);
+	dma->rx_ring0 = NULL;
+err_destroy_tx5:
+	b43legacy_destroy_dmaring(dma->tx_ring5);
+	dma->tx_ring5 = NULL;
+err_destroy_tx4:
+	b43legacy_destroy_dmaring(dma->tx_ring4);
+	dma->tx_ring4 = NULL;
+err_destroy_tx3:
+	b43legacy_destroy_dmaring(dma->tx_ring3);
+	dma->tx_ring3 = NULL;
+err_destroy_tx2:
+	b43legacy_destroy_dmaring(dma->tx_ring2);
+	dma->tx_ring2 = NULL;
+err_destroy_tx1:
+	b43legacy_destroy_dmaring(dma->tx_ring1);
+	dma->tx_ring1 = NULL;
+err_destroy_tx0:
+	b43legacy_destroy_dmaring(dma->tx_ring0);
+	dma->tx_ring0 = NULL;
+	goto out;
+}
+
+/* Generate a cookie for the TX header. */
+static u16 generate_cookie(struct b43legacy_dmaring *ring,
+			   int slot)
+{
+	u16 cookie = 0x1000;
+
+	/* Use the upper 4 bits of the cookie as
+	 * DMA controller ID and store the slot number
+	 * in the lower 12 bits.
+	 * Note that the cookie must never be 0, as this
+	 * is a special value used in RX path.
+	 */
+	switch (ring->index) {
+	case 0:
+		cookie = 0xA000;
+		break;
+	case 1:
+		cookie = 0xB000;
+		break;
+	case 2:
+		cookie = 0xC000;
+		break;
+	case 3:
+		cookie = 0xD000;
+		break;
+	case 4:
+		cookie = 0xE000;
+		break;
+	case 5:
+		cookie = 0xF000;
+		break;
+	}
+	B43legacy_WARN_ON(!(((u16)slot & 0xF000) == 0x0000));
+	cookie |= (u16)slot;
+
+	return cookie;
+}
+
+/* Inspect a cookie and find out to which controller/slot it belongs. */
+static
+struct b43legacy_dmaring *parse_cookie(struct b43legacy_wldev *dev,
+				      u16 cookie, int *slot)
+{
+	struct b43legacy_dma *dma = &dev->dma;
+	struct b43legacy_dmaring *ring = NULL;
+
+	switch (cookie & 0xF000) {
+	case 0xA000:
+		ring = dma->tx_ring0;
+		break;
+	case 0xB000:
+		ring = dma->tx_ring1;
+		break;
+	case 0xC000:
+		ring = dma->tx_ring2;
+		break;
+	case 0xD000:
+		ring = dma->tx_ring3;
+		break;
+	case 0xE000:
+		ring = dma->tx_ring4;
+		break;
+	case 0xF000:
+		ring = dma->tx_ring5;
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+	*slot = (cookie & 0x0FFF);
+	B43legacy_WARN_ON(!(ring && *slot >= 0 && *slot < ring->nr_slots));
+
+	return ring;
+}
+
+static int dma_tx_fragment(struct b43legacy_dmaring *ring,
+			    struct sk_buff **in_skb)
+{
+	struct sk_buff *skb = *in_skb;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	u8 *header;
+	int slot, old_top_slot, old_used_slots;
+	int err;
+	struct b43legacy_dmadesc32 *desc;
+	struct b43legacy_dmadesc_meta *meta;
+	struct b43legacy_dmadesc_meta *meta_hdr;
+	struct sk_buff *bounce_skb;
+
+#define SLOTS_PER_PACKET  2
+	B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0);
+
+	old_top_slot = ring->current_slot;
+	old_used_slots = ring->used_slots;
+
+	/* Get a slot for the header. */
+	slot = request_slot(ring);
+	desc = op32_idx2desc(ring, slot, &meta_hdr);
+	memset(meta_hdr, 0, sizeof(*meta_hdr));
+
+	header = &(ring->txhdr_cache[slot * sizeof(
+			       struct b43legacy_txhdr_fw3)]);
+	err = b43legacy_generate_txhdr(ring->dev, header,
+				 skb->data, skb->len, info,
+				 generate_cookie(ring, slot));
+	if (unlikely(err)) {
+		ring->current_slot = old_top_slot;
+		ring->used_slots = old_used_slots;
+		return err;
+	}
+
+	meta_hdr->dmaaddr = map_descbuffer(ring, (unsigned char *)header,
+					   sizeof(struct b43legacy_txhdr_fw3), 1);
+	if (b43legacy_dma_mapping_error(ring, meta_hdr->dmaaddr,
+					sizeof(struct b43legacy_txhdr_fw3), 1)) {
+		ring->current_slot = old_top_slot;
+		ring->used_slots = old_used_slots;
+		return -EIO;
+	}
+	op32_fill_descriptor(ring, desc, meta_hdr->dmaaddr,
+			     sizeof(struct b43legacy_txhdr_fw3), 1, 0, 0);
+
+	/* Get a slot for the payload. */
+	slot = request_slot(ring);
+	desc = op32_idx2desc(ring, slot, &meta);
+	memset(meta, 0, sizeof(*meta));
+
+	meta->skb = skb;
+	meta->is_last_fragment = true;
+
+	meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
+	/* create a bounce buffer in zone_dma on mapping failure. */
+	if (b43legacy_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) {
+		bounce_skb = alloc_skb(skb->len, GFP_KERNEL | GFP_DMA);
+		if (!bounce_skb) {
+			ring->current_slot = old_top_slot;
+			ring->used_slots = old_used_slots;
+			err = -ENOMEM;
+			goto out_unmap_hdr;
+		}
+
+		skb_put_data(bounce_skb, skb->data, skb->len);
+		memcpy(bounce_skb->cb, skb->cb, sizeof(skb->cb));
+		bounce_skb->dev = skb->dev;
+		skb_set_queue_mapping(bounce_skb, skb_get_queue_mapping(skb));
+		info = IEEE80211_SKB_CB(bounce_skb);
+
+		dev_kfree_skb_any(skb);
+		skb = bounce_skb;
+		*in_skb = bounce_skb;
+		meta->skb = skb;
+		meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
+		if (b43legacy_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) {
+			ring->current_slot = old_top_slot;
+			ring->used_slots = old_used_slots;
+			err = -EIO;
+			goto out_free_bounce;
+		}
+	}
+
+	op32_fill_descriptor(ring, desc, meta->dmaaddr,
+			     skb->len, 0, 1, 1);
+
+	wmb();	/* previous stuff MUST be done */
+	/* Now transfer the whole frame. */
+	op32_poke_tx(ring, next_slot(ring, slot));
+	return 0;
+
+out_free_bounce:
+	dev_kfree_skb_any(skb);
+out_unmap_hdr:
+	unmap_descbuffer(ring, meta_hdr->dmaaddr,
+			 sizeof(struct b43legacy_txhdr_fw3), 1);
+	return err;
+}
+
+static inline
+int should_inject_overflow(struct b43legacy_dmaring *ring)
+{
+#ifdef CONFIG_B43LEGACY_DEBUG
+	if (unlikely(b43legacy_debug(ring->dev,
+				     B43legacy_DBG_DMAOVERFLOW))) {
+		/* Check if we should inject another ringbuffer overflow
+		 * to test handling of this situation in the stack. */
+		unsigned long next_overflow;
+
+		next_overflow = ring->last_injected_overflow + HZ;
+		if (time_after(jiffies, next_overflow)) {
+			ring->last_injected_overflow = jiffies;
+			b43legacydbg(ring->dev->wl,
+			       "Injecting TX ring overflow on "
+			       "DMA controller %d\n", ring->index);
+			return 1;
+		}
+	}
+#endif /* CONFIG_B43LEGACY_DEBUG */
+	return 0;
+}
+
+int b43legacy_dma_tx(struct b43legacy_wldev *dev,
+		     struct sk_buff *skb)
+{
+	struct b43legacy_dmaring *ring;
+	int err = 0;
+
+	ring = priority_to_txring(dev, skb_get_queue_mapping(skb));
+	B43legacy_WARN_ON(!ring->tx);
+
+	if (unlikely(ring->stopped)) {
+		/* We get here only because of a bug in mac80211.
+		 * Because of a race, one packet may be queued after
+		 * the queue is stopped, thus we got called when we shouldn't.
+		 * For now, just refuse the transmit. */
+		if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE))
+			b43legacyerr(dev->wl, "Packet after queue stopped\n");
+		return -ENOSPC;
+	}
+
+	if (WARN_ON(free_slots(ring) < SLOTS_PER_PACKET)) {
+		/* If we get here, we have a real error with the queue
+		 * full, but queues not stopped. */
+		b43legacyerr(dev->wl, "DMA queue overflow\n");
+		return -ENOSPC;
+	}
+
+	/* dma_tx_fragment might reallocate the skb, so invalidate pointers pointing
+	 * into the skb data or cb now. */
+	err = dma_tx_fragment(ring, &skb);
+	if (unlikely(err == -ENOKEY)) {
+		/* Drop this packet, as we don't have the encryption key
+		 * anymore and must not transmit it unencrypted. */
+		dev_kfree_skb_any(skb);
+		return 0;
+	}
+	if (unlikely(err)) {
+		b43legacyerr(dev->wl, "DMA tx mapping failure\n");
+		return err;
+	}
+	if ((free_slots(ring) < SLOTS_PER_PACKET) ||
+	    should_inject_overflow(ring)) {
+		/* This TX ring is full. */
+		unsigned int skb_mapping = skb_get_queue_mapping(skb);
+		ieee80211_stop_queue(dev->wl->hw, skb_mapping);
+		dev->wl->tx_queue_stopped[skb_mapping] = 1;
+		ring->stopped = true;
+		if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE))
+			b43legacydbg(dev->wl, "Stopped TX ring %d\n",
+			       ring->index);
+	}
+	return err;
+}
+
+void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_txstatus *status)
+{
+	struct b43legacy_dmaring *ring;
+	struct b43legacy_dmadesc_meta *meta;
+	int retry_limit;
+	int slot;
+	int firstused;
+
+	ring = parse_cookie(dev, status->cookie, &slot);
+	if (unlikely(!ring))
+		return;
+	B43legacy_WARN_ON(!ring->tx);
+
+	/* Sanity check: TX packets are processed in-order on one ring.
+	 * Check if the slot deduced from the cookie really is the first
+	 * used slot. */
+	firstused = ring->current_slot - ring->used_slots + 1;
+	if (firstused < 0)
+		firstused = ring->nr_slots + firstused;
+	if (unlikely(slot != firstused)) {
+		/* This possibly is a firmware bug and will result in
+		 * malfunction, memory leaks and/or stall of DMA functionality.
+		 */
+		b43legacydbg(dev->wl, "Out of order TX status report on DMA "
+			     "ring %d. Expected %d, but got %d\n",
+			     ring->index, firstused, slot);
+		return;
+	}
+
+	while (1) {
+		B43legacy_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
+		op32_idx2desc(ring, slot, &meta);
+
+		if (meta->skb)
+			unmap_descbuffer(ring, meta->dmaaddr,
+					 meta->skb->len, 1);
+		else
+			unmap_descbuffer(ring, meta->dmaaddr,
+					 sizeof(struct b43legacy_txhdr_fw3),
+					 1);
+
+		if (meta->is_last_fragment) {
+			struct ieee80211_tx_info *info;
+			BUG_ON(!meta->skb);
+			info = IEEE80211_SKB_CB(meta->skb);
+
+			/* preserve the confiured retry limit before clearing the status
+			 * The xmit function has overwritten the rc's value with the actual
+			 * retry limit done by the hardware */
+			retry_limit = info->status.rates[0].count;
+			ieee80211_tx_info_clear_status(info);
+
+			if (status->acked)
+				info->flags |= IEEE80211_TX_STAT_ACK;
+
+			if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
+				/*
+				 * If the short retries (RTS, not data frame) have exceeded
+				 * the limit, the hw will not have tried the selected rate,
+				 * but will have used the fallback rate instead.
+				 * Don't let the rate control count attempts for the selected
+				 * rate in this case, otherwise the statistics will be off.
+				 */
+				info->status.rates[0].count = 0;
+				info->status.rates[1].count = status->frame_count;
+			} else {
+				if (status->frame_count > retry_limit) {
+					info->status.rates[0].count = retry_limit;
+					info->status.rates[1].count = status->frame_count -
+							retry_limit;
+
+				} else {
+					info->status.rates[0].count = status->frame_count;
+					info->status.rates[1].idx = -1;
+				}
+			}
+
+			/* Call back to inform the ieee80211 subsystem about the
+			 * status of the transmission.
+			 * Some fields of txstat are already filled in dma_tx().
+			 */
+			ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb);
+			/* skb is freed by ieee80211_tx_status_irqsafe() */
+			meta->skb = NULL;
+		} else {
+			/* No need to call free_descriptor_buffer here, as
+			 * this is only the txhdr, which is not allocated.
+			 */
+			B43legacy_WARN_ON(meta->skb != NULL);
+		}
+
+		/* Everything unmapped and free'd. So it's not used anymore. */
+		ring->used_slots--;
+
+		if (meta->is_last_fragment)
+			break;
+		slot = next_slot(ring, slot);
+	}
+	dev->stats.last_tx = jiffies;
+	if (ring->stopped) {
+		B43legacy_WARN_ON(free_slots(ring) < SLOTS_PER_PACKET);
+		ring->stopped = false;
+	}
+
+	if (dev->wl->tx_queue_stopped[ring->queue_prio]) {
+		dev->wl->tx_queue_stopped[ring->queue_prio] = 0;
+	} else {
+		/* If the driver queue is running wake the corresponding
+		 * mac80211 queue. */
+		ieee80211_wake_queue(dev->wl->hw, ring->queue_prio);
+		if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE))
+			b43legacydbg(dev->wl, "Woke up TX ring %d\n",
+				     ring->index);
+	}
+	/* Add work to the queue. */
+	ieee80211_queue_work(dev->wl->hw, &dev->wl->tx_work);
+}
+
+static void dma_rx(struct b43legacy_dmaring *ring,
+		   int *slot)
+{
+	struct b43legacy_dmadesc32 *desc;
+	struct b43legacy_dmadesc_meta *meta;
+	struct b43legacy_rxhdr_fw3 *rxhdr;
+	struct sk_buff *skb;
+	u16 len;
+	int err;
+	dma_addr_t dmaaddr;
+
+	desc = op32_idx2desc(ring, *slot, &meta);
+
+	sync_descbuffer_for_cpu(ring, meta->dmaaddr, ring->rx_buffersize);
+	skb = meta->skb;
+
+	if (ring->index == 3) {
+		/* We received an xmit status. */
+		struct b43legacy_hwtxstatus *hw =
+				(struct b43legacy_hwtxstatus *)skb->data;
+		int i = 0;
+
+		while (hw->cookie == 0) {
+			if (i > 100)
+				break;
+			i++;
+			udelay(2);
+			barrier();
+		}
+		b43legacy_handle_hwtxstatus(ring->dev, hw);
+		/* recycle the descriptor buffer. */
+		sync_descbuffer_for_device(ring, meta->dmaaddr,
+					   ring->rx_buffersize);
+
+		return;
+	}
+	rxhdr = (struct b43legacy_rxhdr_fw3 *)skb->data;
+	len = le16_to_cpu(rxhdr->frame_len);
+	if (len == 0) {
+		int i = 0;
+
+		do {
+			udelay(2);
+			barrier();
+			len = le16_to_cpu(rxhdr->frame_len);
+		} while (len == 0 && i++ < 5);
+		if (unlikely(len == 0)) {
+			/* recycle the descriptor buffer. */
+			sync_descbuffer_for_device(ring, meta->dmaaddr,
+						   ring->rx_buffersize);
+			goto drop;
+		}
+	}
+	if (unlikely(len > ring->rx_buffersize)) {
+		/* The data did not fit into one descriptor buffer
+		 * and is split over multiple buffers.
+		 * This should never happen, as we try to allocate buffers
+		 * big enough. So simply ignore this packet.
+		 */
+		int cnt = 0;
+		s32 tmp = len;
+
+		while (1) {
+			desc = op32_idx2desc(ring, *slot, &meta);
+			/* recycle the descriptor buffer. */
+			sync_descbuffer_for_device(ring, meta->dmaaddr,
+						   ring->rx_buffersize);
+			*slot = next_slot(ring, *slot);
+			cnt++;
+			tmp -= ring->rx_buffersize;
+			if (tmp <= 0)
+				break;
+		}
+		b43legacyerr(ring->dev->wl, "DMA RX buffer too small "
+		       "(len: %u, buffer: %u, nr-dropped: %d)\n",
+		       len, ring->rx_buffersize, cnt);
+		goto drop;
+	}
+
+	dmaaddr = meta->dmaaddr;
+	err = setup_rx_descbuffer(ring, desc, meta, GFP_ATOMIC);
+	if (unlikely(err)) {
+		b43legacydbg(ring->dev->wl, "DMA RX: setup_rx_descbuffer()"
+			     " failed\n");
+		sync_descbuffer_for_device(ring, dmaaddr,
+					   ring->rx_buffersize);
+		goto drop;
+	}
+
+	unmap_descbuffer(ring, dmaaddr, ring->rx_buffersize, 0);
+	skb_put(skb, len + ring->frameoffset);
+	skb_pull(skb, ring->frameoffset);
+
+	b43legacy_rx(ring->dev, skb, rxhdr);
+drop:
+	return;
+}
+
+void b43legacy_dma_rx(struct b43legacy_dmaring *ring)
+{
+	int slot;
+	int current_slot;
+	int used_slots = 0;
+
+	B43legacy_WARN_ON(ring->tx);
+	current_slot = op32_get_current_rxslot(ring);
+	B43legacy_WARN_ON(!(current_slot >= 0 && current_slot <
+			   ring->nr_slots));
+
+	slot = ring->current_slot;
+	for (; slot != current_slot; slot = next_slot(ring, slot)) {
+		dma_rx(ring, &slot);
+		update_max_used_slots(ring, ++used_slots);
+	}
+	op32_set_current_rxslot(ring, slot);
+	ring->current_slot = slot;
+}
+
+static void b43legacy_dma_tx_suspend_ring(struct b43legacy_dmaring *ring)
+{
+	B43legacy_WARN_ON(!ring->tx);
+	op32_tx_suspend(ring);
+}
+
+static void b43legacy_dma_tx_resume_ring(struct b43legacy_dmaring *ring)
+{
+	B43legacy_WARN_ON(!ring->tx);
+	op32_tx_resume(ring);
+}
+
+void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev)
+{
+	b43legacy_power_saving_ctl_bits(dev, -1, 1);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring0);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring1);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring2);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring3);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring4);
+	b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring5);
+}
+
+void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev)
+{
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring5);
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring4);
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring3);
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring2);
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring1);
+	b43legacy_dma_tx_resume_ring(dev->dma.tx_ring0);
+	b43legacy_power_saving_ctl_bits(dev, -1, -1);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/dma.h b/drivers/net/wireless/broadcom/b43legacy/dma.h
new file mode 100644
index 000000000..b5c1a51db
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/dma.h
@@ -0,0 +1,232 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_DMA_H_
+#define B43legacy_DMA_H_
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/linkage.h>
+#include <linux/atomic.h>
+
+#include "b43legacy.h"
+
+
+/* DMA-Interrupt reasons. */
+#define B43legacy_DMAIRQ_FATALMASK	((1 << 10) | (1 << 11) | (1 << 12) \
+					 | (1 << 14) | (1 << 15))
+#define B43legacy_DMAIRQ_NONFATALMASK	(1 << 13)
+#define B43legacy_DMAIRQ_RX_DONE		(1 << 16)
+
+
+/*** 32-bit DMA Engine. ***/
+
+/* 32-bit DMA controller registers. */
+#define B43legacy_DMA32_TXCTL				0x00
+#define		B43legacy_DMA32_TXENABLE		0x00000001
+#define		B43legacy_DMA32_TXSUSPEND		0x00000002
+#define		B43legacy_DMA32_TXLOOPBACK		0x00000004
+#define		B43legacy_DMA32_TXFLUSH			0x00000010
+#define		B43legacy_DMA32_TXADDREXT_MASK		0x00030000
+#define		B43legacy_DMA32_TXADDREXT_SHIFT		16
+#define B43legacy_DMA32_TXRING				0x04
+#define B43legacy_DMA32_TXINDEX				0x08
+#define B43legacy_DMA32_TXSTATUS			0x0C
+#define		B43legacy_DMA32_TXDPTR			0x00000FFF
+#define		B43legacy_DMA32_TXSTATE			0x0000F000
+#define			B43legacy_DMA32_TXSTAT_DISABLED	0x00000000
+#define			B43legacy_DMA32_TXSTAT_ACTIVE	0x00001000
+#define			B43legacy_DMA32_TXSTAT_IDLEWAIT	0x00002000
+#define			B43legacy_DMA32_TXSTAT_STOPPED	0x00003000
+#define			B43legacy_DMA32_TXSTAT_SUSP	0x00004000
+#define		B43legacy_DMA32_TXERROR			0x000F0000
+#define			B43legacy_DMA32_TXERR_NOERR	0x00000000
+#define			B43legacy_DMA32_TXERR_PROT	0x00010000
+#define			B43legacy_DMA32_TXERR_UNDERRUN	0x00020000
+#define			B43legacy_DMA32_TXERR_BUFREAD	0x00030000
+#define			B43legacy_DMA32_TXERR_DESCREAD	0x00040000
+#define		B43legacy_DMA32_TXACTIVE		0xFFF00000
+#define B43legacy_DMA32_RXCTL				0x10
+#define		B43legacy_DMA32_RXENABLE		0x00000001
+#define		B43legacy_DMA32_RXFROFF_MASK		0x000000FE
+#define		B43legacy_DMA32_RXFROFF_SHIFT		1
+#define		B43legacy_DMA32_RXDIRECTFIFO		0x00000100
+#define		B43legacy_DMA32_RXADDREXT_MASK		0x00030000
+#define		B43legacy_DMA32_RXADDREXT_SHIFT		16
+#define B43legacy_DMA32_RXRING				0x14
+#define B43legacy_DMA32_RXINDEX				0x18
+#define B43legacy_DMA32_RXSTATUS			0x1C
+#define		B43legacy_DMA32_RXDPTR			0x00000FFF
+#define		B43legacy_DMA32_RXSTATE			0x0000F000
+#define			B43legacy_DMA32_RXSTAT_DISABLED	0x00000000
+#define			B43legacy_DMA32_RXSTAT_ACTIVE	0x00001000
+#define			B43legacy_DMA32_RXSTAT_IDLEWAIT	0x00002000
+#define			B43legacy_DMA32_RXSTAT_STOPPED	0x00003000
+#define		B43legacy_DMA32_RXERROR			0x000F0000
+#define			B43legacy_DMA32_RXERR_NOERR	0x00000000
+#define			B43legacy_DMA32_RXERR_PROT	0x00010000
+#define			B43legacy_DMA32_RXERR_OVERFLOW	0x00020000
+#define			B43legacy_DMA32_RXERR_BUFWRITE	0x00030000
+#define			B43legacy_DMA32_RXERR_DESCREAD	0x00040000
+#define		B43legacy_DMA32_RXACTIVE		0xFFF00000
+
+/* 32-bit DMA descriptor. */
+struct b43legacy_dmadesc32 {
+	__le32 control;
+	__le32 address;
+} __packed;
+#define B43legacy_DMA32_DCTL_BYTECNT		0x00001FFF
+#define B43legacy_DMA32_DCTL_ADDREXT_MASK	0x00030000
+#define B43legacy_DMA32_DCTL_ADDREXT_SHIFT	16
+#define B43legacy_DMA32_DCTL_DTABLEEND		0x10000000
+#define B43legacy_DMA32_DCTL_IRQ		0x20000000
+#define B43legacy_DMA32_DCTL_FRAMEEND		0x40000000
+#define B43legacy_DMA32_DCTL_FRAMESTART		0x80000000
+
+
+/* Misc DMA constants */
+#define B43legacy_DMA_RINGMEMSIZE	PAGE_SIZE
+#define B43legacy_DMA0_RX_FRAMEOFFSET	30
+#define B43legacy_DMA3_RX_FRAMEOFFSET	0
+
+
+/* DMA engine tuning knobs */
+#define B43legacy_TXRING_SLOTS		128
+#define B43legacy_RXRING_SLOTS		64
+#define B43legacy_DMA0_RX_BUFFERSIZE	(2304 + 100)
+#define B43legacy_DMA3_RX_BUFFERSIZE	16
+
+
+
+#ifdef CONFIG_B43LEGACY_DMA
+
+
+struct sk_buff;
+struct b43legacy_private;
+struct b43legacy_txstatus;
+
+
+struct b43legacy_dmadesc_meta {
+	/* The kernel DMA-able buffer. */
+	struct sk_buff *skb;
+	/* DMA base bus-address of the descriptor buffer. */
+	dma_addr_t dmaaddr;
+	/* ieee80211 TX status. Only used once per 802.11 frag. */
+	bool is_last_fragment;
+};
+
+enum b43legacy_dmatype {
+	B43legacy_DMA_30BIT = 30,
+	B43legacy_DMA_32BIT = 32,
+};
+
+struct b43legacy_dmaring {
+	/* Kernel virtual base address of the ring memory. */
+	void *descbase;
+	/* Meta data about all descriptors. */
+	struct b43legacy_dmadesc_meta *meta;
+	/* Cache of TX headers for each slot.
+	 * This is to avoid an allocation on each TX.
+	 * This is NULL for an RX ring.
+	 */
+	u8 *txhdr_cache;
+	/* (Unadjusted) DMA base bus-address of the ring memory. */
+	dma_addr_t dmabase;
+	/* Number of descriptor slots in the ring. */
+	int nr_slots;
+	/* Number of used descriptor slots. */
+	int used_slots;
+	/* Currently used slot in the ring. */
+	int current_slot;
+	/* Frameoffset in octets. */
+	u32 frameoffset;
+	/* Descriptor buffer size. */
+	u16 rx_buffersize;
+	/* The MMIO base register of the DMA controller. */
+	u16 mmio_base;
+	/* DMA controller index number (0-5). */
+	int index;
+	/* Boolean. Is this a TX ring? */
+	bool tx;
+	/* The type of DMA engine used. */
+	enum b43legacy_dmatype type;
+	/* Boolean. Is this ring stopped at ieee80211 level? */
+	bool stopped;
+	/* The QOS priority assigned to this ring. Only used for TX rings.
+	 * This is the mac80211 "queue" value. */
+	u8 queue_prio;
+	struct b43legacy_wldev *dev;
+#ifdef CONFIG_B43LEGACY_DEBUG
+	/* Maximum number of used slots. */
+	int max_used_slots;
+	/* Last time we injected a ring overflow. */
+	unsigned long last_injected_overflow;
+#endif /* CONFIG_B43LEGACY_DEBUG*/
+};
+
+
+static inline
+u32 b43legacy_dma_read(struct b43legacy_dmaring *ring,
+		       u16 offset)
+{
+	return b43legacy_read32(ring->dev, ring->mmio_base + offset);
+}
+
+static inline
+void b43legacy_dma_write(struct b43legacy_dmaring *ring,
+			 u16 offset, u32 value)
+{
+	b43legacy_write32(ring->dev, ring->mmio_base + offset, value);
+}
+
+
+int b43legacy_dma_init(struct b43legacy_wldev *dev);
+void b43legacy_dma_free(struct b43legacy_wldev *dev);
+
+void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev);
+void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev);
+
+int b43legacy_dma_tx(struct b43legacy_wldev *dev,
+		     struct sk_buff *skb);
+void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev,
+				   const struct b43legacy_txstatus *status);
+
+void b43legacy_dma_rx(struct b43legacy_dmaring *ring);
+
+#else /* CONFIG_B43LEGACY_DMA */
+
+
+static inline
+int b43legacy_dma_init(struct b43legacy_wldev *dev)
+{
+	return 0;
+}
+static inline
+void b43legacy_dma_free(struct b43legacy_wldev *dev)
+{
+}
+static inline
+int b43legacy_dma_tx(struct b43legacy_wldev *dev,
+		     struct sk_buff *skb)
+{
+	return 0;
+}
+static inline
+void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev,
+				   const struct b43legacy_txstatus *status)
+{
+}
+static inline
+void b43legacy_dma_rx(struct b43legacy_dmaring *ring)
+{
+}
+static inline
+void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev)
+{
+}
+static inline
+void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev)
+{
+}
+
+#endif /* CONFIG_B43LEGACY_DMA */
+#endif /* B43legacy_DMA_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/ilt.c b/drivers/net/wireless/broadcom/b43legacy/ilt.c
new file mode 100644
index 000000000..f62d6886a
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/ilt.c
@@ -0,0 +1,321 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <stefano.brivio@polimi.it>
+		     Michael Buesch <m@bues.ch>
+		     Danny van Dyk <kugelfang@gentoo.org>
+		     Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+
+*/
+
+#include "b43legacy.h"
+#include "ilt.h"
+#include "phy.h"
+
+
+/**** Initial Internal Lookup Tables ****/
+
+const u32 b43legacy_ilt_rotor[B43legacy_ILT_ROTOR_SIZE] = {
+	0xFEB93FFD, 0xFEC63FFD, /* 0 */
+	0xFED23FFD, 0xFEDF3FFD,
+	0xFEEC3FFE, 0xFEF83FFE,
+	0xFF053FFE, 0xFF113FFE,
+	0xFF1E3FFE, 0xFF2A3FFF, /* 8 */
+	0xFF373FFF, 0xFF443FFF,
+	0xFF503FFF, 0xFF5D3FFF,
+	0xFF693FFF, 0xFF763FFF,
+	0xFF824000, 0xFF8F4000, /* 16 */
+	0xFF9B4000, 0xFFA84000,
+	0xFFB54000, 0xFFC14000,
+	0xFFCE4000, 0xFFDA4000,
+	0xFFE74000, 0xFFF34000, /* 24 */
+	0x00004000, 0x000D4000,
+	0x00194000, 0x00264000,
+	0x00324000, 0x003F4000,
+	0x004B4000, 0x00584000, /* 32 */
+	0x00654000, 0x00714000,
+	0x007E4000, 0x008A3FFF,
+	0x00973FFF, 0x00A33FFF,
+	0x00B03FFF, 0x00BC3FFF, /* 40 */
+	0x00C93FFF, 0x00D63FFF,
+	0x00E23FFE, 0x00EF3FFE,
+	0x00FB3FFE, 0x01083FFE,
+	0x01143FFE, 0x01213FFD, /* 48 */
+	0x012E3FFD, 0x013A3FFD,
+	0x01473FFD,
+};
+
+const u32 b43legacy_ilt_retard[B43legacy_ILT_RETARD_SIZE] = {
+	0xDB93CB87, 0xD666CF64, /* 0 */
+	0xD1FDD358, 0xCDA6D826,
+	0xCA38DD9F, 0xC729E2B4,
+	0xC469E88E, 0xC26AEE2B,
+	0xC0DEF46C, 0xC073FA62, /* 8 */
+	0xC01D00D5, 0xC0760743,
+	0xC1560D1E, 0xC2E51369,
+	0xC4ED18FF, 0xC7AC1ED7,
+	0xCB2823B2, 0xCEFA28D9, /* 16 */
+	0xD2F62D3F, 0xD7BB3197,
+	0xDCE53568, 0xE1FE3875,
+	0xE7D13B35, 0xED663D35,
+	0xF39B3EC4, 0xF98E3FA7, /* 24 */
+	0x00004000, 0x06723FA7,
+	0x0C653EC4, 0x129A3D35,
+	0x182F3B35, 0x1E023875,
+	0x231B3568, 0x28453197, /* 32 */
+	0x2D0A2D3F, 0x310628D9,
+	0x34D823B2, 0x38541ED7,
+	0x3B1318FF, 0x3D1B1369,
+	0x3EAA0D1E, 0x3F8A0743, /* 40 */
+	0x3FE300D5, 0x3F8DFA62,
+	0x3F22F46C, 0x3D96EE2B,
+	0x3B97E88E, 0x38D7E2B4,
+	0x35C8DD9F, 0x325AD826, /* 48 */
+	0x2E03D358, 0x299ACF64,
+	0x246DCB87,
+};
+
+const u16 b43legacy_ilt_finefreqa[B43legacy_ILT_FINEFREQA_SIZE] = {
+	0x0082, 0x0082, 0x0102, 0x0182, /* 0 */
+	0x0202, 0x0282, 0x0302, 0x0382,
+	0x0402, 0x0482, 0x0502, 0x0582,
+	0x05E2, 0x0662, 0x06E2, 0x0762,
+	0x07E2, 0x0842, 0x08C2, 0x0942, /* 16 */
+	0x09C2, 0x0A22, 0x0AA2, 0x0B02,
+	0x0B82, 0x0BE2, 0x0C62, 0x0CC2,
+	0x0D42, 0x0DA2, 0x0E02, 0x0E62,
+	0x0EE2, 0x0F42, 0x0FA2, 0x1002, /* 32 */
+	0x1062, 0x10C2, 0x1122, 0x1182,
+	0x11E2, 0x1242, 0x12A2, 0x12E2,
+	0x1342, 0x13A2, 0x1402, 0x1442,
+	0x14A2, 0x14E2, 0x1542, 0x1582, /* 48 */
+	0x15E2, 0x1622, 0x1662, 0x16C1,
+	0x1701, 0x1741, 0x1781, 0x17E1,
+	0x1821, 0x1861, 0x18A1, 0x18E1,
+	0x1921, 0x1961, 0x19A1, 0x19E1, /* 64 */
+	0x1A21, 0x1A61, 0x1AA1, 0x1AC1,
+	0x1B01, 0x1B41, 0x1B81, 0x1BA1,
+	0x1BE1, 0x1C21, 0x1C41, 0x1C81,
+	0x1CA1, 0x1CE1, 0x1D01, 0x1D41, /* 80 */
+	0x1D61, 0x1DA1, 0x1DC1, 0x1E01,
+	0x1E21, 0x1E61, 0x1E81, 0x1EA1,
+	0x1EE1, 0x1F01, 0x1F21, 0x1F41,
+	0x1F81, 0x1FA1, 0x1FC1, 0x1FE1, /* 96 */
+	0x2001, 0x2041, 0x2061, 0x2081,
+	0x20A1, 0x20C1, 0x20E1, 0x2101,
+	0x2121, 0x2141, 0x2161, 0x2181,
+	0x21A1, 0x21C1, 0x21E1, 0x2201, /* 112 */
+	0x2221, 0x2241, 0x2261, 0x2281,
+	0x22A1, 0x22C1, 0x22C1, 0x22E1,
+	0x2301, 0x2321, 0x2341, 0x2361,
+	0x2361, 0x2381, 0x23A1, 0x23C1, /* 128 */
+	0x23E1, 0x23E1, 0x2401, 0x2421,
+	0x2441, 0x2441, 0x2461, 0x2481,
+	0x2481, 0x24A1, 0x24C1, 0x24C1,
+	0x24E1, 0x2501, 0x2501, 0x2521, /* 144 */
+	0x2541, 0x2541, 0x2561, 0x2561,
+	0x2581, 0x25A1, 0x25A1, 0x25C1,
+	0x25C1, 0x25E1, 0x2601, 0x2601,
+	0x2621, 0x2621, 0x2641, 0x2641, /* 160 */
+	0x2661, 0x2661, 0x2681, 0x2681,
+	0x26A1, 0x26A1, 0x26C1, 0x26C1,
+	0x26E1, 0x26E1, 0x2701, 0x2701,
+	0x2721, 0x2721, 0x2740, 0x2740, /* 176 */
+	0x2760, 0x2760, 0x2780, 0x2780,
+	0x2780, 0x27A0, 0x27A0, 0x27C0,
+	0x27C0, 0x27E0, 0x27E0, 0x27E0,
+	0x2800, 0x2800, 0x2820, 0x2820, /* 192 */
+	0x2820, 0x2840, 0x2840, 0x2840,
+	0x2860, 0x2860, 0x2880, 0x2880,
+	0x2880, 0x28A0, 0x28A0, 0x28A0,
+	0x28C0, 0x28C0, 0x28C0, 0x28E0, /* 208 */
+	0x28E0, 0x28E0, 0x2900, 0x2900,
+	0x2900, 0x2920, 0x2920, 0x2920,
+	0x2940, 0x2940, 0x2940, 0x2960,
+	0x2960, 0x2960, 0x2960, 0x2980, /* 224 */
+	0x2980, 0x2980, 0x29A0, 0x29A0,
+	0x29A0, 0x29A0, 0x29C0, 0x29C0,
+	0x29C0, 0x29E0, 0x29E0, 0x29E0,
+	0x29E0, 0x2A00, 0x2A00, 0x2A00, /* 240 */
+	0x2A00, 0x2A20, 0x2A20, 0x2A20,
+	0x2A20, 0x2A40, 0x2A40, 0x2A40,
+	0x2A40, 0x2A60, 0x2A60, 0x2A60,
+};
+
+const u16 b43legacy_ilt_finefreqg[B43legacy_ILT_FINEFREQG_SIZE] = {
+	0x0089, 0x02E9, 0x0409, 0x04E9, /* 0 */
+	0x05A9, 0x0669, 0x0709, 0x0789,
+	0x0829, 0x08A9, 0x0929, 0x0989,
+	0x0A09, 0x0A69, 0x0AC9, 0x0B29,
+	0x0BA9, 0x0BE9, 0x0C49, 0x0CA9, /* 16 */
+	0x0D09, 0x0D69, 0x0DA9, 0x0E09,
+	0x0E69, 0x0EA9, 0x0F09, 0x0F49,
+	0x0FA9, 0x0FE9, 0x1029, 0x1089,
+	0x10C9, 0x1109, 0x1169, 0x11A9, /* 32 */
+	0x11E9, 0x1229, 0x1289, 0x12C9,
+	0x1309, 0x1349, 0x1389, 0x13C9,
+	0x1409, 0x1449, 0x14A9, 0x14E9,
+	0x1529, 0x1569, 0x15A9, 0x15E9, /* 48 */
+	0x1629, 0x1669, 0x16A9, 0x16E8,
+	0x1728, 0x1768, 0x17A8, 0x17E8,
+	0x1828, 0x1868, 0x18A8, 0x18E8,
+	0x1928, 0x1968, 0x19A8, 0x19E8, /* 64 */
+	0x1A28, 0x1A68, 0x1AA8, 0x1AE8,
+	0x1B28, 0x1B68, 0x1BA8, 0x1BE8,
+	0x1C28, 0x1C68, 0x1CA8, 0x1CE8,
+	0x1D28, 0x1D68, 0x1DC8, 0x1E08, /* 80 */
+	0x1E48, 0x1E88, 0x1EC8, 0x1F08,
+	0x1F48, 0x1F88, 0x1FE8, 0x2028,
+	0x2068, 0x20A8, 0x2108, 0x2148,
+	0x2188, 0x21C8, 0x2228, 0x2268, /* 96 */
+	0x22C8, 0x2308, 0x2348, 0x23A8,
+	0x23E8, 0x2448, 0x24A8, 0x24E8,
+	0x2548, 0x25A8, 0x2608, 0x2668,
+	0x26C8, 0x2728, 0x2787, 0x27E7, /* 112 */
+	0x2847, 0x28C7, 0x2947, 0x29A7,
+	0x2A27, 0x2AC7, 0x2B47, 0x2BE7,
+	0x2CA7, 0x2D67, 0x2E47, 0x2F67,
+	0x3247, 0x3526, 0x3646, 0x3726, /* 128 */
+	0x3806, 0x38A6, 0x3946, 0x39E6,
+	0x3A66, 0x3AE6, 0x3B66, 0x3BC6,
+	0x3C45, 0x3CA5, 0x3D05, 0x3D85,
+	0x3DE5, 0x3E45, 0x3EA5, 0x3EE5, /* 144 */
+	0x3F45, 0x3FA5, 0x4005, 0x4045,
+	0x40A5, 0x40E5, 0x4145, 0x4185,
+	0x41E5, 0x4225, 0x4265, 0x42C5,
+	0x4305, 0x4345, 0x43A5, 0x43E5, /* 160 */
+	0x4424, 0x4464, 0x44C4, 0x4504,
+	0x4544, 0x4584, 0x45C4, 0x4604,
+	0x4644, 0x46A4, 0x46E4, 0x4724,
+	0x4764, 0x47A4, 0x47E4, 0x4824, /* 176 */
+	0x4864, 0x48A4, 0x48E4, 0x4924,
+	0x4964, 0x49A4, 0x49E4, 0x4A24,
+	0x4A64, 0x4AA4, 0x4AE4, 0x4B23,
+	0x4B63, 0x4BA3, 0x4BE3, 0x4C23, /* 192 */
+	0x4C63, 0x4CA3, 0x4CE3, 0x4D23,
+	0x4D63, 0x4DA3, 0x4DE3, 0x4E23,
+	0x4E63, 0x4EA3, 0x4EE3, 0x4F23,
+	0x4F63, 0x4FC3, 0x5003, 0x5043, /* 208 */
+	0x5083, 0x50C3, 0x5103, 0x5143,
+	0x5183, 0x51E2, 0x5222, 0x5262,
+	0x52A2, 0x52E2, 0x5342, 0x5382,
+	0x53C2, 0x5402, 0x5462, 0x54A2, /* 224 */
+	0x5502, 0x5542, 0x55A2, 0x55E2,
+	0x5642, 0x5682, 0x56E2, 0x5722,
+	0x5782, 0x57E1, 0x5841, 0x58A1,
+	0x5901, 0x5961, 0x59C1, 0x5A21, /* 240 */
+	0x5AA1, 0x5B01, 0x5B81, 0x5BE1,
+	0x5C61, 0x5D01, 0x5D80, 0x5E20,
+	0x5EE0, 0x5FA0, 0x6080, 0x61C0,
+};
+
+const u16 b43legacy_ilt_noisea2[B43legacy_ILT_NOISEA2_SIZE] = {
+	0x0001, 0x0001, 0x0001, 0xFFFE,
+	0xFFFE, 0x3FFF, 0x1000, 0x0393,
+};
+
+const u16 b43legacy_ilt_noisea3[B43legacy_ILT_NOISEA3_SIZE] = {
+	0x4C4C, 0x4C4C, 0x4C4C, 0x2D36,
+	0x4C4C, 0x4C4C, 0x4C4C, 0x2D36,
+};
+
+const u16 b43legacy_ilt_noiseg1[B43legacy_ILT_NOISEG1_SIZE] = {
+	0x013C, 0x01F5, 0x031A, 0x0631,
+	0x0001, 0x0001, 0x0001, 0x0001,
+};
+
+const u16 b43legacy_ilt_noiseg2[B43legacy_ILT_NOISEG2_SIZE] = {
+	0x5484, 0x3C40, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+};
+
+const u16 b43legacy_ilt_noisescaleg1[B43legacy_ILT_NOISESCALEG_SIZE] = {
+	0x6C77, 0x5162, 0x3B40, 0x3335, /* 0 */
+	0x2F2D, 0x2A2A, 0x2527, 0x1F21,
+	0x1A1D, 0x1719, 0x1616, 0x1414,
+	0x1414, 0x1400, 0x1414, 0x1614,
+	0x1716, 0x1A19, 0x1F1D, 0x2521, /* 16 */
+	0x2A27, 0x2F2A, 0x332D, 0x3B35,
+	0x5140, 0x6C62, 0x0077,
+};
+
+const u16 b43legacy_ilt_noisescaleg2[B43legacy_ILT_NOISESCALEG_SIZE] = {
+	0xD8DD, 0xCBD4, 0xBCC0, 0XB6B7, /* 0 */
+	0xB2B0, 0xADAD, 0xA7A9, 0x9FA1,
+	0x969B, 0x9195, 0x8F8F, 0x8A8A,
+	0x8A8A, 0x8A00, 0x8A8A, 0x8F8A,
+	0x918F, 0x9695, 0x9F9B, 0xA7A1, /* 16 */
+	0xADA9, 0xB2AD, 0xB6B0, 0xBCB7,
+	0xCBC0, 0xD8D4, 0x00DD,
+};
+
+const u16 b43legacy_ilt_noisescaleg3[B43legacy_ILT_NOISESCALEG_SIZE] = {
+	0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, /* 0 */
+	0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4,
+	0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4,
+	0xA4A4, 0xA400, 0xA4A4, 0xA4A4,
+	0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, /* 16 */
+	0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4,
+	0xA4A4, 0xA4A4, 0x00A4,
+};
+
+const u16 b43legacy_ilt_sigmasqr1[B43legacy_ILT_SIGMASQR_SIZE] = {
+	0x007A, 0x0075, 0x0071, 0x006C, /* 0 */
+	0x0067, 0x0063, 0x005E, 0x0059,
+	0x0054, 0x0050, 0x004B, 0x0046,
+	0x0042, 0x003D, 0x003D, 0x003D,
+	0x003D, 0x003D, 0x003D, 0x003D, /* 16 */
+	0x003D, 0x003D, 0x003D, 0x003D,
+	0x003D, 0x003D, 0x0000, 0x003D,
+	0x003D, 0x003D, 0x003D, 0x003D,
+	0x003D, 0x003D, 0x003D, 0x003D, /* 32 */
+	0x003D, 0x003D, 0x003D, 0x003D,
+	0x0042, 0x0046, 0x004B, 0x0050,
+	0x0054, 0x0059, 0x005E, 0x0063,
+	0x0067, 0x006C, 0x0071, 0x0075, /* 48 */
+	0x007A,
+};
+
+const u16 b43legacy_ilt_sigmasqr2[B43legacy_ILT_SIGMASQR_SIZE] = {
+	0x00DE, 0x00DC, 0x00DA, 0x00D8, /* 0 */
+	0x00D6, 0x00D4, 0x00D2, 0x00CF,
+	0x00CD, 0x00CA, 0x00C7, 0x00C4,
+	0x00C1, 0x00BE, 0x00BE, 0x00BE,
+	0x00BE, 0x00BE, 0x00BE, 0x00BE, /* 16 */
+	0x00BE, 0x00BE, 0x00BE, 0x00BE,
+	0x00BE, 0x00BE, 0x0000, 0x00BE,
+	0x00BE, 0x00BE, 0x00BE, 0x00BE,
+	0x00BE, 0x00BE, 0x00BE, 0x00BE, /* 32 */
+	0x00BE, 0x00BE, 0x00BE, 0x00BE,
+	0x00C1, 0x00C4, 0x00C7, 0x00CA,
+	0x00CD, 0x00CF, 0x00D2, 0x00D4,
+	0x00D6, 0x00D8, 0x00DA, 0x00DC, /* 48 */
+	0x00DE,
+};
+
+/**** Helper functions to access the device Internal Lookup Tables ****/
+
+void b43legacy_ilt_write(struct b43legacy_wldev *dev, u16 offset, u16 val)
+{
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset);
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1, val);
+}
+
+void b43legacy_ilt_write32(struct b43legacy_wldev *dev, u16 offset, u32 val)
+{
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset);
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA2,
+			    (val & 0xFFFF0000) >> 16);
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1,
+			    val & 0x0000FFFF);
+}
+
+u16 b43legacy_ilt_read(struct b43legacy_wldev *dev, u16 offset)
+{
+	b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset);
+	return b43legacy_phy_read(dev, B43legacy_PHY_ILT_G_DATA1);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/ilt.h b/drivers/net/wireless/broadcom/b43legacy/ilt.h
new file mode 100644
index 000000000..ce7a61e2e
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/ilt.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_ILT_H_
+#define B43legacy_ILT_H_
+
+#define B43legacy_ILT_ROTOR_SIZE	53
+extern const u32 b43legacy_ilt_rotor[B43legacy_ILT_ROTOR_SIZE];
+#define B43legacy_ILT_RETARD_SIZE	53
+extern const u32 b43legacy_ilt_retard[B43legacy_ILT_RETARD_SIZE];
+#define B43legacy_ILT_FINEFREQA_SIZE	256
+extern const u16 b43legacy_ilt_finefreqa[B43legacy_ILT_FINEFREQA_SIZE];
+#define B43legacy_ILT_FINEFREQG_SIZE	256
+extern const u16 b43legacy_ilt_finefreqg[B43legacy_ILT_FINEFREQG_SIZE];
+#define B43legacy_ILT_NOISEA2_SIZE	8
+extern const u16 b43legacy_ilt_noisea2[B43legacy_ILT_NOISEA2_SIZE];
+#define B43legacy_ILT_NOISEA3_SIZE	8
+extern const u16 b43legacy_ilt_noisea3[B43legacy_ILT_NOISEA3_SIZE];
+#define B43legacy_ILT_NOISEG1_SIZE	8
+extern const u16 b43legacy_ilt_noiseg1[B43legacy_ILT_NOISEG1_SIZE];
+#define B43legacy_ILT_NOISEG2_SIZE	8
+extern const u16 b43legacy_ilt_noiseg2[B43legacy_ILT_NOISEG2_SIZE];
+#define B43legacy_ILT_NOISESCALEG_SIZE	27
+extern const u16 b43legacy_ilt_noisescaleg1[B43legacy_ILT_NOISESCALEG_SIZE];
+extern const u16 b43legacy_ilt_noisescaleg2[B43legacy_ILT_NOISESCALEG_SIZE];
+extern const u16 b43legacy_ilt_noisescaleg3[B43legacy_ILT_NOISESCALEG_SIZE];
+#define B43legacy_ILT_SIGMASQR_SIZE	53
+extern const u16 b43legacy_ilt_sigmasqr1[B43legacy_ILT_SIGMASQR_SIZE];
+extern const u16 b43legacy_ilt_sigmasqr2[B43legacy_ILT_SIGMASQR_SIZE];
+
+
+void b43legacy_ilt_write(struct b43legacy_wldev *dev, u16 offset, u16 val);
+void b43legacy_ilt_write32(struct b43legacy_wldev *dev, u16 offset,
+			   u32 val);
+u16 b43legacy_ilt_read(struct b43legacy_wldev *dev, u16 offset);
+
+#endif /* B43legacy_ILT_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/leds.c b/drivers/net/wireless/broadcom/b43legacy/leds.c
new file mode 100644
index 000000000..79e6fd205
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/leds.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43 wireless driver
+  LED control
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+  Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
+  Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
+  Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+
+*/
+
+#include "b43legacy.h"
+#include "leds.h"
+#include "rfkill.h"
+
+
+static void b43legacy_led_turn_on(struct b43legacy_wldev *dev, u8 led_index,
+			    bool activelow)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long flags;
+	u16 ctl;
+
+	spin_lock_irqsave(&wl->leds_lock, flags);
+	ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
+	if (activelow)
+		ctl &= ~(1 << led_index);
+	else
+		ctl |= (1 << led_index);
+	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
+	spin_unlock_irqrestore(&wl->leds_lock, flags);
+}
+
+static void b43legacy_led_turn_off(struct b43legacy_wldev *dev, u8 led_index,
+			     bool activelow)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long flags;
+	u16 ctl;
+
+	spin_lock_irqsave(&wl->leds_lock, flags);
+	ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
+	if (activelow)
+		ctl |= (1 << led_index);
+	else
+		ctl &= ~(1 << led_index);
+	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
+	spin_unlock_irqrestore(&wl->leds_lock, flags);
+}
+
+/* Callback from the LED subsystem. */
+static void b43legacy_led_brightness_set(struct led_classdev *led_dev,
+				   enum led_brightness brightness)
+{
+	struct b43legacy_led *led = container_of(led_dev, struct b43legacy_led,
+				    led_dev);
+	struct b43legacy_wldev *dev = led->dev;
+	bool radio_enabled;
+
+	/* Checking the radio-enabled status here is slightly racy,
+	 * but we want to avoid the locking overhead and we don't care
+	 * whether the LED has the wrong state for a second. */
+	radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
+
+	if (brightness == LED_OFF || !radio_enabled)
+		b43legacy_led_turn_off(dev, led->index, led->activelow);
+	else
+		b43legacy_led_turn_on(dev, led->index, led->activelow);
+}
+
+static int b43legacy_register_led(struct b43legacy_wldev *dev,
+				  struct b43legacy_led *led,
+				  const char *name,
+				  const char *default_trigger,
+				  u8 led_index, bool activelow)
+{
+	int err;
+
+	b43legacy_led_turn_off(dev, led_index, activelow);
+	if (led->dev)
+		return -EEXIST;
+	if (!default_trigger)
+		return -EINVAL;
+	led->dev = dev;
+	led->index = led_index;
+	led->activelow = activelow;
+	strscpy(led->name, name, sizeof(led->name));
+
+	led->led_dev.name = led->name;
+	led->led_dev.default_trigger = default_trigger;
+	led->led_dev.brightness_set = b43legacy_led_brightness_set;
+
+	err = led_classdev_register(dev->dev->dev, &led->led_dev);
+	if (err) {
+		b43legacywarn(dev->wl, "LEDs: Failed to register %s\n", name);
+		led->dev = NULL;
+		return err;
+	}
+	return 0;
+}
+
+static void b43legacy_unregister_led(struct b43legacy_led *led)
+{
+	if (!led->dev)
+		return;
+	led_classdev_unregister(&led->led_dev);
+	b43legacy_led_turn_off(led->dev, led->index, led->activelow);
+	led->dev = NULL;
+}
+
+static void b43legacy_map_led(struct b43legacy_wldev *dev,
+			u8 led_index,
+			enum b43legacy_led_behaviour behaviour,
+			bool activelow)
+{
+	struct ieee80211_hw *hw = dev->wl->hw;
+	char name[B43legacy_LED_MAX_NAME_LEN + 1];
+
+	/* Map the b43 specific LED behaviour value to the
+	 * generic LED triggers. */
+	switch (behaviour) {
+	case B43legacy_LED_INACTIVE:
+		break;
+	case B43legacy_LED_OFF:
+		b43legacy_led_turn_off(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_ON:
+		b43legacy_led_turn_on(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_ACTIVITY:
+	case B43legacy_LED_TRANSFER:
+	case B43legacy_LED_APTRANSFER:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::tx", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_tx, name,
+				 ieee80211_get_tx_led_name(hw),
+				 led_index, activelow);
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::rx", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_rx, name,
+				 ieee80211_get_rx_led_name(hw),
+				 led_index, activelow);
+		break;
+	case B43legacy_LED_RADIO_ALL:
+	case B43legacy_LED_RADIO_A:
+	case B43legacy_LED_RADIO_B:
+	case B43legacy_LED_MODE_BG:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::radio", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_radio, name,
+				 ieee80211_get_radio_led_name(hw),
+				 led_index, activelow);
+		/* Sync the RF-kill LED state with radio and switch states. */
+		if (dev->phy.radio_on && b43legacy_is_hw_radio_enabled(dev))
+			b43legacy_led_turn_on(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_WEIRD:
+	case B43legacy_LED_ASSOC:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::assoc", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_assoc, name,
+				 ieee80211_get_assoc_led_name(hw),
+				 led_index, activelow);
+		break;
+	default:
+		b43legacywarn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
+			behaviour);
+		break;
+	}
+}
+
+void b43legacy_leds_init(struct b43legacy_wldev *dev)
+{
+	struct ssb_bus *bus = dev->dev->bus;
+	u8 sprom[4];
+	int i;
+	enum b43legacy_led_behaviour behaviour;
+	bool activelow;
+
+	sprom[0] = bus->sprom.gpio0;
+	sprom[1] = bus->sprom.gpio1;
+	sprom[2] = bus->sprom.gpio2;
+	sprom[3] = bus->sprom.gpio3;
+
+	for (i = 0; i < 4; i++) {
+		if (sprom[i] == 0xFF) {
+			/* There is no LED information in the SPROM
+			 * for this LED. Hardcode it here. */
+			activelow = false;
+			switch (i) {
+			case 0:
+				behaviour = B43legacy_LED_ACTIVITY;
+				activelow = true;
+				if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
+					behaviour = B43legacy_LED_RADIO_ALL;
+				break;
+			case 1:
+				behaviour = B43legacy_LED_RADIO_B;
+				if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
+					behaviour = B43legacy_LED_ASSOC;
+				break;
+			case 2:
+				behaviour = B43legacy_LED_RADIO_A;
+				break;
+			case 3:
+				behaviour = B43legacy_LED_OFF;
+				break;
+			default:
+				B43legacy_WARN_ON(1);
+				return;
+			}
+		} else {
+			behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
+			activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW);
+		}
+		b43legacy_map_led(dev, i, behaviour, activelow);
+	}
+}
+
+void b43legacy_leds_exit(struct b43legacy_wldev *dev)
+{
+	b43legacy_unregister_led(&dev->led_tx);
+	b43legacy_unregister_led(&dev->led_rx);
+	b43legacy_unregister_led(&dev->led_assoc);
+	b43legacy_unregister_led(&dev->led_radio);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/leds.h b/drivers/net/wireless/broadcom/b43legacy/leds.h
new file mode 100644
index 000000000..389ae06a2
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/leds.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_LEDS_H_
+#define B43legacy_LEDS_H_
+
+struct b43legacy_wldev;
+
+#ifdef CONFIG_B43LEGACY_LEDS
+
+#include <linux/types.h>
+#include <linux/leds.h>
+
+
+#define B43legacy_LED_MAX_NAME_LEN	31
+
+struct b43legacy_led {
+	struct b43legacy_wldev *dev;
+	/* The LED class device */
+	struct led_classdev led_dev;
+	/* The index number of the LED. */
+	u8 index;
+	/* If activelow is true, the LED is ON if the
+	 * bit is switched off. */
+	bool activelow;
+	/* The unique name string for this LED device. */
+	char name[B43legacy_LED_MAX_NAME_LEN + 1];
+};
+
+#define B43legacy_LED_BEHAVIOUR		0x7F
+#define B43legacy_LED_ACTIVELOW		0x80
+/* LED behaviour values */
+enum b43legacy_led_behaviour {
+	B43legacy_LED_OFF,
+	B43legacy_LED_ON,
+	B43legacy_LED_ACTIVITY,
+	B43legacy_LED_RADIO_ALL,
+	B43legacy_LED_RADIO_A,
+	B43legacy_LED_RADIO_B,
+	B43legacy_LED_MODE_BG,
+	B43legacy_LED_TRANSFER,
+	B43legacy_LED_APTRANSFER,
+	B43legacy_LED_WEIRD,
+	B43legacy_LED_ASSOC,
+	B43legacy_LED_INACTIVE,
+};
+
+void b43legacy_leds_init(struct b43legacy_wldev *dev);
+void b43legacy_leds_exit(struct b43legacy_wldev *dev);
+
+#else /* CONFIG_B43LEGACY_LEDS */
+/* LED support disabled */
+
+struct b43legacy_led {
+	/* empty */
+};
+
+static inline void b43legacy_leds_init(struct b43legacy_wldev *dev)
+{
+}
+static inline void b43legacy_leds_exit(struct b43legacy_wldev *dev)
+{
+}
+#endif /* CONFIG_B43LEGACY_LEDS */
+
+#endif /* B43legacy_LEDS_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/main.c b/drivers/net/wireless/broadcom/b43legacy/main.c
new file mode 100644
index 000000000..4022c544a
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/main.c
@@ -0,0 +1,4030 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ *  Broadcom B43legacy wireless driver
+ *
+ *  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
+ *  Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it>
+ *  Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
+ *  Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
+ *  Copyright (c) 2005 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.
+
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/firmware.h>
+#include <linux/workqueue.h>
+#include <linux/sched/signal.h>
+#include <linux/skbuff.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <net/dst.h>
+#include <asm/unaligned.h>
+
+#include "b43legacy.h"
+#include "main.h"
+#include "debugfs.h"
+#include "phy.h"
+#include "dma.h"
+#include "pio.h"
+#include "sysfs.h"
+#include "xmit.h"
+#include "radio.h"
+
+
+MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
+MODULE_AUTHOR("Martin Langer");
+MODULE_AUTHOR("Stefano Brivio");
+MODULE_AUTHOR("Michael Buesch");
+MODULE_LICENSE("GPL");
+
+MODULE_FIRMWARE("b43legacy/ucode2.fw");
+MODULE_FIRMWARE("b43legacy/ucode4.fw");
+
+#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
+static int modparam_pio;
+module_param_named(pio, modparam_pio, int, 0444);
+MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
+#elif defined(CONFIG_B43LEGACY_DMA)
+# define modparam_pio	0
+#elif defined(CONFIG_B43LEGACY_PIO)
+# define modparam_pio	1
+#endif
+
+static int modparam_bad_frames_preempt;
+module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
+MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
+		 " Preemption");
+
+static char modparam_fwpostfix[16];
+module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
+MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
+
+/* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
+static const struct ssb_device_id b43legacy_ssb_tbl[] = {
+	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2),
+	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4),
+	{},
+};
+MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl);
+
+
+/* Channel and ratetables are shared for all devices.
+ * They can't be const, because ieee80211 puts some precalculated
+ * data in there. This data is the same for all devices, so we don't
+ * get concurrency issues */
+#define RATETAB_ENT(_rateid, _flags) \
+	{								\
+		.bitrate	= B43legacy_RATE_TO_100KBPS(_rateid),	\
+		.hw_value	= (_rateid),				\
+		.flags		= (_flags),				\
+	}
+/*
+ * NOTE: When changing this, sync with xmit.c's
+ *	 b43legacy_plcp_get_bitrate_idx_* functions!
+ */
+static struct ieee80211_rate __b43legacy_ratetable[] = {
+	RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0),
+	RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
+	RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
+	RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
+	RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0),
+	RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0),
+};
+#define b43legacy_b_ratetable		(__b43legacy_ratetable + 0)
+#define b43legacy_b_ratetable_size	4
+#define b43legacy_g_ratetable		(__b43legacy_ratetable + 0)
+#define b43legacy_g_ratetable_size	12
+
+#define CHANTAB_ENT(_chanid, _freq) \
+	{							\
+		.center_freq	= (_freq),			\
+		.hw_value	= (_chanid),			\
+	}
+static struct ieee80211_channel b43legacy_bg_chantable[] = {
+	CHANTAB_ENT(1, 2412),
+	CHANTAB_ENT(2, 2417),
+	CHANTAB_ENT(3, 2422),
+	CHANTAB_ENT(4, 2427),
+	CHANTAB_ENT(5, 2432),
+	CHANTAB_ENT(6, 2437),
+	CHANTAB_ENT(7, 2442),
+	CHANTAB_ENT(8, 2447),
+	CHANTAB_ENT(9, 2452),
+	CHANTAB_ENT(10, 2457),
+	CHANTAB_ENT(11, 2462),
+	CHANTAB_ENT(12, 2467),
+	CHANTAB_ENT(13, 2472),
+	CHANTAB_ENT(14, 2484),
+};
+
+static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = {
+	.channels = b43legacy_bg_chantable,
+	.n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
+	.bitrates = b43legacy_b_ratetable,
+	.n_bitrates = b43legacy_b_ratetable_size,
+};
+
+static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = {
+	.channels = b43legacy_bg_chantable,
+	.n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
+	.bitrates = b43legacy_g_ratetable,
+	.n_bitrates = b43legacy_g_ratetable_size,
+};
+
+static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
+static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
+static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
+static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
+
+
+static int b43legacy_ratelimit(struct b43legacy_wl *wl)
+{
+	if (!wl || !wl->current_dev)
+		return 1;
+	if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED)
+		return 1;
+	/* We are up and running.
+	 * Ratelimit the messages to avoid DoS over the net. */
+	return net_ratelimit();
+}
+
+void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	if (!b43legacy_ratelimit(wl))
+		return;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	printk(KERN_INFO "b43legacy-%s: %pV",
+	       (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
+
+	va_end(args);
+}
+
+void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	if (!b43legacy_ratelimit(wl))
+		return;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	printk(KERN_ERR "b43legacy-%s ERROR: %pV",
+	       (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
+
+	va_end(args);
+}
+
+void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	if (!b43legacy_ratelimit(wl))
+		return;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	printk(KERN_WARNING "b43legacy-%s warning: %pV",
+	       (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
+
+	va_end(args);
+}
+
+#if B43legacy_DEBUG
+void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	printk(KERN_DEBUG "b43legacy-%s debug: %pV",
+	       (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
+
+	va_end(args);
+}
+#endif /* DEBUG */
+
+static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset,
+				u32 val)
+{
+	u32 status;
+
+	B43legacy_WARN_ON(offset % 4 != 0);
+
+	status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	if (status & B43legacy_MACCTL_BE)
+		val = swab32(val);
+
+	b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
+	b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
+}
+
+static inline
+void b43legacy_shm_control_word(struct b43legacy_wldev *dev,
+				u16 routing, u16 offset)
+{
+	u32 control;
+
+	/* "offset" is the WORD offset. */
+
+	control = routing;
+	control <<= 16;
+	control |= offset;
+	b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control);
+}
+
+u32 b43legacy_shm_read32(struct b43legacy_wldev *dev,
+		       u16 routing, u16 offset)
+{
+	u32 ret;
+
+	if (routing == B43legacy_SHM_SHARED) {
+		B43legacy_WARN_ON((offset & 0x0001) != 0);
+		if (offset & 0x0003) {
+			/* Unaligned access */
+			b43legacy_shm_control_word(dev, routing, offset >> 2);
+			ret = b43legacy_read16(dev,
+				B43legacy_MMIO_SHM_DATA_UNALIGNED);
+			ret <<= 16;
+			b43legacy_shm_control_word(dev, routing,
+						     (offset >> 2) + 1);
+			ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
+
+			return ret;
+		}
+		offset >>= 2;
+	}
+	b43legacy_shm_control_word(dev, routing, offset);
+	ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA);
+
+	return ret;
+}
+
+u16 b43legacy_shm_read16(struct b43legacy_wldev *dev,
+			   u16 routing, u16 offset)
+{
+	u16 ret;
+
+	if (routing == B43legacy_SHM_SHARED) {
+		B43legacy_WARN_ON((offset & 0x0001) != 0);
+		if (offset & 0x0003) {
+			/* Unaligned access */
+			b43legacy_shm_control_word(dev, routing, offset >> 2);
+			ret = b43legacy_read16(dev,
+					     B43legacy_MMIO_SHM_DATA_UNALIGNED);
+
+			return ret;
+		}
+		offset >>= 2;
+	}
+	b43legacy_shm_control_word(dev, routing, offset);
+	ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
+
+	return ret;
+}
+
+void b43legacy_shm_write32(struct b43legacy_wldev *dev,
+			   u16 routing, u16 offset,
+			   u32 value)
+{
+	if (routing == B43legacy_SHM_SHARED) {
+		B43legacy_WARN_ON((offset & 0x0001) != 0);
+		if (offset & 0x0003) {
+			/* Unaligned access */
+			b43legacy_shm_control_word(dev, routing, offset >> 2);
+			b43legacy_write16(dev,
+					  B43legacy_MMIO_SHM_DATA_UNALIGNED,
+					  (value >> 16) & 0xffff);
+			b43legacy_shm_control_word(dev, routing,
+						   (offset >> 2) + 1);
+			b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
+					  value & 0xffff);
+			return;
+		}
+		offset >>= 2;
+	}
+	b43legacy_shm_control_word(dev, routing, offset);
+	b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
+}
+
+void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
+			   u16 value)
+{
+	if (routing == B43legacy_SHM_SHARED) {
+		B43legacy_WARN_ON((offset & 0x0001) != 0);
+		if (offset & 0x0003) {
+			/* Unaligned access */
+			b43legacy_shm_control_word(dev, routing, offset >> 2);
+			b43legacy_write16(dev,
+					  B43legacy_MMIO_SHM_DATA_UNALIGNED,
+					  value);
+			return;
+		}
+		offset >>= 2;
+	}
+	b43legacy_shm_control_word(dev, routing, offset);
+	b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
+}
+
+/* Read HostFlags */
+u32 b43legacy_hf_read(struct b43legacy_wldev *dev)
+{
+	u32 ret;
+
+	ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				   B43legacy_SHM_SH_HOSTFHI);
+	ret <<= 16;
+	ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				    B43legacy_SHM_SH_HOSTFLO);
+
+	return ret;
+}
+
+/* Write HostFlags */
+void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value)
+{
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_HOSTFLO,
+			      (value & 0x0000FFFF));
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_HOSTFHI,
+			      ((value & 0xFFFF0000) >> 16));
+}
+
+void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf)
+{
+	/* We need to be careful. As we read the TSF from multiple
+	 * registers, we should take care of register overflows.
+	 * In theory, the whole tsf read process should be atomic.
+	 * We try to be atomic here, by restaring the read process,
+	 * if any of the high registers changed (overflowed).
+	 */
+	if (dev->dev->id.revision >= 3) {
+		u32 low;
+		u32 high;
+		u32 high2;
+
+		do {
+			high = b43legacy_read32(dev,
+					B43legacy_MMIO_REV3PLUS_TSF_HIGH);
+			low = b43legacy_read32(dev,
+					B43legacy_MMIO_REV3PLUS_TSF_LOW);
+			high2 = b43legacy_read32(dev,
+					B43legacy_MMIO_REV3PLUS_TSF_HIGH);
+		} while (unlikely(high != high2));
+
+		*tsf = high;
+		*tsf <<= 32;
+		*tsf |= low;
+	} else {
+		u64 tmp;
+		u16 v0;
+		u16 v1;
+		u16 v2;
+		u16 v3;
+		u16 test1;
+		u16 test2;
+		u16 test3;
+
+		do {
+			v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
+			v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
+			v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
+			v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0);
+
+			test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
+			test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
+			test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
+		} while (v3 != test3 || v2 != test2 || v1 != test1);
+
+		*tsf = v3;
+		*tsf <<= 48;
+		tmp = v2;
+		tmp <<= 32;
+		*tsf |= tmp;
+		tmp = v1;
+		tmp <<= 16;
+		*tsf |= tmp;
+		*tsf |= v0;
+	}
+}
+
+static void b43legacy_time_lock(struct b43legacy_wldev *dev)
+{
+	u32 status;
+
+	status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	status |= B43legacy_MACCTL_TBTTHOLD;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
+}
+
+static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
+{
+	u32 status;
+
+	status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	status &= ~B43legacy_MACCTL_TBTTHOLD;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
+}
+
+static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
+{
+	/* Be careful with the in-progress timer.
+	 * First zero out the low register, so we have a full
+	 * register-overflow duration to complete the operation.
+	 */
+	if (dev->dev->id.revision >= 3) {
+		u32 lo = (tsf & 0x00000000FFFFFFFFULL);
+		u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
+
+		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
+		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
+				    hi);
+		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
+				    lo);
+	} else {
+		u16 v0 = (tsf & 0x000000000000FFFFULL);
+		u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
+		u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
+		u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
+
+		b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
+		b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
+		b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
+		b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
+		b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
+	}
+}
+
+void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf)
+{
+	b43legacy_time_lock(dev);
+	b43legacy_tsf_write_locked(dev, tsf);
+	b43legacy_time_unlock(dev);
+}
+
+static
+void b43legacy_macfilter_set(struct b43legacy_wldev *dev,
+			     u16 offset, const u8 *mac)
+{
+	static const u8 zero_addr[ETH_ALEN] = { 0 };
+	u16 data;
+
+	if (!mac)
+		mac = zero_addr;
+
+	offset |= 0x0020;
+	b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset);
+
+	data = mac[0];
+	data |= mac[1] << 8;
+	b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
+	data = mac[2];
+	data |= mac[3] << 8;
+	b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
+	data = mac[4];
+	data |= mac[5] << 8;
+	b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
+}
+
+static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev)
+{
+	static const u8 zero_addr[ETH_ALEN] = { 0 };
+	const u8 *mac = dev->wl->mac_addr;
+	const u8 *bssid = dev->wl->bssid;
+	u8 mac_bssid[ETH_ALEN * 2];
+	int i;
+	u32 tmp;
+
+	if (!bssid)
+		bssid = zero_addr;
+	if (!mac)
+		mac = zero_addr;
+
+	b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid);
+
+	memcpy(mac_bssid, mac, ETH_ALEN);
+	memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
+
+	/* Write our MAC address and BSSID to template ram */
+	for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
+		tmp =  (u32)(mac_bssid[i + 0]);
+		tmp |= (u32)(mac_bssid[i + 1]) << 8;
+		tmp |= (u32)(mac_bssid[i + 2]) << 16;
+		tmp |= (u32)(mac_bssid[i + 3]) << 24;
+		b43legacy_ram_write(dev, 0x20 + i, tmp);
+		b43legacy_ram_write(dev, 0x78 + i, tmp);
+		b43legacy_ram_write(dev, 0x478 + i, tmp);
+	}
+}
+
+static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev)
+{
+	b43legacy_write_mac_bssid_templates(dev);
+	b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF,
+				dev->wl->mac_addr);
+}
+
+static void b43legacy_set_slot_time(struct b43legacy_wldev *dev,
+				    u16 slot_time)
+{
+	/* slot_time is in usec. */
+	if (dev->phy.type != B43legacy_PHYTYPE_G)
+		return;
+	b43legacy_write16(dev, 0x684, 510 + slot_time);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010,
+			      slot_time);
+}
+
+static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
+{
+	b43legacy_set_slot_time(dev, 9);
+}
+
+static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev)
+{
+	b43legacy_set_slot_time(dev, 20);
+}
+
+/* Synchronize IRQ top- and bottom-half.
+ * IRQs must be masked before calling this.
+ * This must not be called with the irq_lock held.
+ */
+static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev)
+{
+	synchronize_irq(dev->dev->irq);
+	tasklet_kill(&dev->isr_tasklet);
+}
+
+/* DummyTransmission function, as documented on
+ * https://bcm-specs.sipsolutions.net/DummyTransmission
+ */
+void b43legacy_dummy_transmission(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	unsigned int i;
+	unsigned int max_loop;
+	u16 value;
+	u32 buffer[5] = {
+		0x00000000,
+		0x00D40000,
+		0x00000000,
+		0x01000000,
+		0x00000000,
+	};
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+	case B43legacy_PHYTYPE_G:
+		max_loop = 0xFA;
+		buffer[0] = 0x000B846E;
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+		return;
+	}
+
+	for (i = 0; i < 5; i++)
+		b43legacy_ram_write(dev, i * 4, buffer[i]);
+
+	/* dummy read follows */
+	b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+
+	b43legacy_write16(dev, 0x0568, 0x0000);
+	b43legacy_write16(dev, 0x07C0, 0x0000);
+	b43legacy_write16(dev, 0x050C, 0x0000);
+	b43legacy_write16(dev, 0x0508, 0x0000);
+	b43legacy_write16(dev, 0x050A, 0x0000);
+	b43legacy_write16(dev, 0x054C, 0x0000);
+	b43legacy_write16(dev, 0x056A, 0x0014);
+	b43legacy_write16(dev, 0x0568, 0x0826);
+	b43legacy_write16(dev, 0x0500, 0x0000);
+	b43legacy_write16(dev, 0x0502, 0x0030);
+
+	if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
+		b43legacy_radio_write16(dev, 0x0051, 0x0017);
+	for (i = 0x00; i < max_loop; i++) {
+		value = b43legacy_read16(dev, 0x050E);
+		if (value & 0x0080)
+			break;
+		udelay(10);
+	}
+	for (i = 0x00; i < 0x0A; i++) {
+		value = b43legacy_read16(dev, 0x050E);
+		if (value & 0x0400)
+			break;
+		udelay(10);
+	}
+	for (i = 0x00; i < 0x0A; i++) {
+		value = b43legacy_read16(dev, 0x0690);
+		if (!(value & 0x0100))
+			break;
+		udelay(10);
+	}
+	if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
+		b43legacy_radio_write16(dev, 0x0051, 0x0037);
+}
+
+/* Turn the Analog ON/OFF */
+static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
+{
+	b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
+}
+
+void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags)
+{
+	u32 tmslow;
+	u32 macctl;
+
+	flags |= B43legacy_TMSLOW_PHYCLKEN;
+	flags |= B43legacy_TMSLOW_PHYRESET;
+	ssb_device_enable(dev->dev, flags);
+	msleep(2); /* Wait for the PLL to turn on. */
+
+	/* Now take the PHY out of Reset again */
+	tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
+	tmslow |= SSB_TMSLOW_FGC;
+	tmslow &= ~B43legacy_TMSLOW_PHYRESET;
+	ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
+	ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
+	msleep(1);
+	tmslow &= ~SSB_TMSLOW_FGC;
+	ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
+	ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
+	msleep(1);
+
+	/* Turn Analog ON */
+	b43legacy_switch_analog(dev, 1);
+
+	macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	macctl &= ~B43legacy_MACCTL_GMODE;
+	if (flags & B43legacy_TMSLOW_GMODE) {
+		macctl |= B43legacy_MACCTL_GMODE;
+		dev->phy.gmode = true;
+	} else
+		dev->phy.gmode = false;
+	macctl |= B43legacy_MACCTL_IHR_ENABLED;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+}
+
+static void handle_irq_transmit_status(struct b43legacy_wldev *dev)
+{
+	u32 v0;
+	u32 v1;
+	u16 tmp;
+	struct b43legacy_txstatus stat;
+
+	while (1) {
+		v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
+		if (!(v0 & 0x00000001))
+			break;
+		v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
+
+		stat.cookie = (v0 >> 16);
+		stat.seq = (v1 & 0x0000FFFF);
+		stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
+		tmp = (v0 & 0x0000FFFF);
+		stat.frame_count = ((tmp & 0xF000) >> 12);
+		stat.rts_count = ((tmp & 0x0F00) >> 8);
+		stat.supp_reason = ((tmp & 0x001C) >> 2);
+		stat.pm_indicated = !!(tmp & 0x0080);
+		stat.intermediate = !!(tmp & 0x0040);
+		stat.for_ampdu = !!(tmp & 0x0020);
+		stat.acked = !!(tmp & 0x0002);
+
+		b43legacy_handle_txstatus(dev, &stat);
+	}
+}
+
+static void drain_txstatus_queue(struct b43legacy_wldev *dev)
+{
+	u32 dummy;
+
+	if (dev->dev->id.revision < 5)
+		return;
+	/* Read all entries from the microcode TXstatus FIFO
+	 * and throw them away.
+	 */
+	while (1) {
+		dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
+		if (!(dummy & 0x00000001))
+			break;
+		dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
+	}
+}
+
+static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev)
+{
+	u32 val = 0;
+
+	val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A);
+	val <<= 16;
+	val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408);
+
+	return val;
+}
+
+static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi)
+{
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408,
+			      (jssi & 0x0000FFFF));
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A,
+			      (jssi & 0xFFFF0000) >> 16);
+}
+
+static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev)
+{
+	b43legacy_jssi_write(dev, 0x7F7F7F7F);
+	b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
+			  b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
+			  | B43legacy_MACCMD_BGNOISE);
+	B43legacy_WARN_ON(dev->noisecalc.channel_at_start !=
+			    dev->phy.channel);
+}
+
+static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev)
+{
+	/* Top half of Link Quality calculation. */
+
+	if (dev->noisecalc.calculation_running)
+		return;
+	dev->noisecalc.channel_at_start = dev->phy.channel;
+	dev->noisecalc.calculation_running = true;
+	dev->noisecalc.nr_samples = 0;
+
+	b43legacy_generate_noise_sample(dev);
+}
+
+static void handle_irq_noise(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 tmp;
+	u8 noise[4];
+	u8 i;
+	u8 j;
+	s32 average;
+
+	/* Bottom half of Link Quality calculation. */
+
+	B43legacy_WARN_ON(!dev->noisecalc.calculation_running);
+	if (dev->noisecalc.channel_at_start != phy->channel)
+		goto drop_calculation;
+	*((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev));
+	if (noise[0] == 0x7F || noise[1] == 0x7F ||
+	    noise[2] == 0x7F || noise[3] == 0x7F)
+		goto generate_new;
+
+	/* Get the noise samples. */
+	B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8);
+	i = dev->noisecalc.nr_samples;
+	noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
+	noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
+	noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
+	noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
+	dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
+	dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
+	dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
+	dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
+	dev->noisecalc.nr_samples++;
+	if (dev->noisecalc.nr_samples == 8) {
+		/* Calculate the Link Quality by the noise samples. */
+		average = 0;
+		for (i = 0; i < 8; i++) {
+			for (j = 0; j < 4; j++)
+				average += dev->noisecalc.samples[i][j];
+		}
+		average /= (8 * 4);
+		average *= 125;
+		average += 64;
+		average /= 128;
+		tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+					     0x40C);
+		tmp = (tmp / 128) & 0x1F;
+		if (tmp >= 8)
+			average += 2;
+		else
+			average -= 25;
+		if (tmp == 8)
+			average -= 72;
+		else
+			average -= 48;
+
+		dev->stats.link_noise = average;
+drop_calculation:
+		dev->noisecalc.calculation_running = false;
+		return;
+	}
+generate_new:
+	b43legacy_generate_noise_sample(dev);
+}
+
+static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev)
+{
+	if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
+		/* TODO: PS TBTT */
+	} else {
+		if (1/*FIXME: the last PSpoll frame was sent successfully */)
+			b43legacy_power_saving_ctl_bits(dev, -1, -1);
+	}
+	if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
+		dev->dfq_valid = true;
+}
+
+static void handle_irq_atim_end(struct b43legacy_wldev *dev)
+{
+	if (dev->dfq_valid) {
+		b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
+				  b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
+				  | B43legacy_MACCMD_DFQ_VALID);
+		dev->dfq_valid = false;
+	}
+}
+
+static void handle_irq_pmq(struct b43legacy_wldev *dev)
+{
+	u32 tmp;
+
+	/* TODO: AP mode. */
+
+	while (1) {
+		tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS);
+		if (!(tmp & 0x00000008))
+			break;
+	}
+	/* 16bit write is odd, but correct. */
+	b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002);
+}
+
+static void b43legacy_write_template_common(struct b43legacy_wldev *dev,
+					    const u8 *data, u16 size,
+					    u16 ram_offset,
+					    u16 shm_size_offset, u8 rate)
+{
+	u32 i;
+	u32 tmp;
+	struct b43legacy_plcp_hdr4 plcp;
+
+	plcp.data = 0;
+	b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
+	b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
+	ram_offset += sizeof(u32);
+	/* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
+	 * So leave the first two bytes of the next write blank.
+	 */
+	tmp = (u32)(data[0]) << 16;
+	tmp |= (u32)(data[1]) << 24;
+	b43legacy_ram_write(dev, ram_offset, tmp);
+	ram_offset += sizeof(u32);
+	for (i = 2; i < size; i += sizeof(u32)) {
+		tmp = (u32)(data[i + 0]);
+		if (i + 1 < size)
+			tmp |= (u32)(data[i + 1]) << 8;
+		if (i + 2 < size)
+			tmp |= (u32)(data[i + 2]) << 16;
+		if (i + 3 < size)
+			tmp |= (u32)(data[i + 3]) << 24;
+		b43legacy_ram_write(dev, ram_offset + i - 2, tmp);
+	}
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset,
+			      size + sizeof(struct b43legacy_plcp_hdr6));
+}
+
+/* Convert a b43legacy antenna number value to the PHY TX control value. */
+static u16 b43legacy_antenna_to_phyctl(int antenna)
+{
+	switch (antenna) {
+	case B43legacy_ANTENNA0:
+		return B43legacy_TX4_PHY_ANT0;
+	case B43legacy_ANTENNA1:
+		return B43legacy_TX4_PHY_ANT1;
+	}
+	return B43legacy_TX4_PHY_ANTLAST;
+}
+
+static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev,
+					    u16 ram_offset,
+					    u16 shm_size_offset)
+{
+
+	unsigned int i, len, variable_len;
+	const struct ieee80211_mgmt *bcn;
+	const u8 *ie;
+	bool tim_found = false;
+	unsigned int rate;
+	u16 ctl;
+	int antenna;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
+
+	bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
+	len = min_t(size_t, dev->wl->current_beacon->len,
+		  0x200 - sizeof(struct b43legacy_plcp_hdr6));
+	rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
+
+	b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset,
+					shm_size_offset, rate);
+
+	/* Write the PHY TX control parameters. */
+	antenna = B43legacy_ANTENNA_DEFAULT;
+	antenna = b43legacy_antenna_to_phyctl(antenna);
+	ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				   B43legacy_SHM_SH_BEACPHYCTL);
+	/* We can't send beacons with short preamble. Would get PHY errors. */
+	ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL;
+	ctl &= ~B43legacy_TX4_PHY_ANT;
+	ctl &= ~B43legacy_TX4_PHY_ENC;
+	ctl |= antenna;
+	ctl |= B43legacy_TX4_PHY_ENC_CCK;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_BEACPHYCTL, ctl);
+
+	/* Find the position of the TIM and the DTIM_period value
+	 * and write them to SHM. */
+	ie = bcn->u.beacon.variable;
+	variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
+	for (i = 0; i < variable_len - 2; ) {
+		uint8_t ie_id, ie_len;
+
+		ie_id = ie[i];
+		ie_len = ie[i + 1];
+		if (ie_id == 5) {
+			u16 tim_position;
+			u16 dtim_period;
+			/* This is the TIM Information Element */
+
+			/* Check whether the ie_len is in the beacon data range. */
+			if (variable_len < ie_len + 2 + i)
+				break;
+			/* A valid TIM is at least 4 bytes long. */
+			if (ie_len < 4)
+				break;
+			tim_found = true;
+
+			tim_position = sizeof(struct b43legacy_plcp_hdr6);
+			tim_position += offsetof(struct ieee80211_mgmt,
+						 u.beacon.variable);
+			tim_position += i;
+
+			dtim_period = ie[i + 3];
+
+			b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+					B43legacy_SHM_SH_TIMPOS, tim_position);
+			b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+					B43legacy_SHM_SH_DTIMP, dtim_period);
+			break;
+		}
+		i += ie_len + 2;
+	}
+	if (!tim_found) {
+		b43legacywarn(dev->wl, "Did not find a valid TIM IE in the "
+			      "beacon template packet. AP or IBSS operation "
+			      "may be broken.\n");
+	} else
+		b43legacydbg(dev->wl, "Updated beacon template\n");
+}
+
+static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev,
+					    u16 shm_offset, u16 size,
+					    struct ieee80211_rate *rate)
+{
+	struct b43legacy_plcp_hdr4 plcp;
+	u32 tmp;
+	__le16 dur;
+
+	plcp.data = 0;
+	b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
+	dur = ieee80211_generic_frame_duration(dev->wl->hw,
+					       dev->wl->vif,
+					       NL80211_BAND_2GHZ,
+					       size,
+					       rate);
+	/* Write PLCP in two parts and timing for packet transfer */
+	tmp = le32_to_cpu(plcp.data);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset,
+			      tmp & 0xFFFF);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2,
+			      tmp >> 16);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6,
+			      le16_to_cpu(dur));
+}
+
+/* Instead of using custom probe response template, this function
+ * just patches custom beacon template by:
+ * 1) Changing packet type
+ * 2) Patching duration field
+ * 3) Stripping TIM
+ */
+static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev,
+					       u16 *dest_size,
+					       struct ieee80211_rate *rate)
+{
+	const u8 *src_data;
+	u8 *dest_data;
+	u16 src_size, elem_size, src_pos, dest_pos;
+	__le16 dur;
+	struct ieee80211_hdr *hdr;
+	size_t ie_start;
+
+	src_size = dev->wl->current_beacon->len;
+	src_data = (const u8 *)dev->wl->current_beacon->data;
+
+	/* Get the start offset of the variable IEs in the packet. */
+	ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
+	B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt,
+					       u.beacon.variable));
+
+	if (B43legacy_WARN_ON(src_size < ie_start))
+		return NULL;
+
+	dest_data = kmalloc(src_size, GFP_ATOMIC);
+	if (unlikely(!dest_data))
+		return NULL;
+
+	/* Copy the static data and all Information Elements, except the TIM. */
+	memcpy(dest_data, src_data, ie_start);
+	src_pos = ie_start;
+	dest_pos = ie_start;
+	for ( ; src_pos < src_size - 2; src_pos += elem_size) {
+		elem_size = src_data[src_pos + 1] + 2;
+		if (src_data[src_pos] == 5) {
+			/* This is the TIM. */
+			continue;
+		}
+		memcpy(dest_data + dest_pos, src_data + src_pos, elem_size);
+		dest_pos += elem_size;
+	}
+	*dest_size = dest_pos;
+	hdr = (struct ieee80211_hdr *)dest_data;
+
+	/* Set the frame control. */
+	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					 IEEE80211_STYPE_PROBE_RESP);
+	dur = ieee80211_generic_frame_duration(dev->wl->hw,
+					       dev->wl->vif,
+					       NL80211_BAND_2GHZ,
+					       *dest_size,
+					       rate);
+	hdr->duration_id = dur;
+
+	return dest_data;
+}
+
+static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev,
+						u16 ram_offset,
+						u16 shm_size_offset,
+						struct ieee80211_rate *rate)
+{
+	const u8 *probe_resp_data;
+	u16 size;
+
+	size = dev->wl->current_beacon->len;
+	probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate);
+	if (unlikely(!probe_resp_data))
+		return;
+
+	/* Looks like PLCP headers plus packet timings are stored for
+	 * all possible basic rates
+	 */
+	b43legacy_write_probe_resp_plcp(dev, 0x31A, size,
+					&b43legacy_b_ratetable[0]);
+	b43legacy_write_probe_resp_plcp(dev, 0x32C, size,
+					&b43legacy_b_ratetable[1]);
+	b43legacy_write_probe_resp_plcp(dev, 0x33E, size,
+					&b43legacy_b_ratetable[2]);
+	b43legacy_write_probe_resp_plcp(dev, 0x350, size,
+					&b43legacy_b_ratetable[3]);
+
+	size = min_t(size_t, size,
+		   0x200 - sizeof(struct b43legacy_plcp_hdr6));
+	b43legacy_write_template_common(dev, probe_resp_data,
+					size, ram_offset,
+					shm_size_offset, rate->hw_value);
+	kfree(probe_resp_data);
+}
+
+static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+
+	if (wl->beacon0_uploaded)
+		return;
+	b43legacy_write_beacon_template(dev, 0x68, 0x18);
+	/* FIXME: Probe resp upload doesn't really belong here,
+	 *        but we don't use that feature anyway. */
+	b43legacy_write_probe_resp_template(dev, 0x268, 0x4A,
+				      &__b43legacy_ratetable[3]);
+	wl->beacon0_uploaded = true;
+}
+
+static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+
+	if (wl->beacon1_uploaded)
+		return;
+	b43legacy_write_beacon_template(dev, 0x468, 0x1A);
+	wl->beacon1_uploaded = true;
+}
+
+static void handle_irq_beacon(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	u32 cmd, beacon0_valid, beacon1_valid;
+
+	if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
+		return;
+
+	/* This is the bottom half of the asynchronous beacon update. */
+
+	/* Ignore interrupt in the future. */
+	dev->irq_mask &= ~B43legacy_IRQ_BEACON;
+
+	cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
+	beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID);
+	beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID);
+
+	/* Schedule interrupt manually, if busy. */
+	if (beacon0_valid && beacon1_valid) {
+		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON);
+		dev->irq_mask |= B43legacy_IRQ_BEACON;
+		return;
+	}
+
+	if (unlikely(wl->beacon_templates_virgin)) {
+		/* We never uploaded a beacon before.
+		 * Upload both templates now, but only mark one valid. */
+		wl->beacon_templates_virgin = false;
+		b43legacy_upload_beacon0(dev);
+		b43legacy_upload_beacon1(dev);
+		cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
+		cmd |= B43legacy_MACCMD_BEACON0_VALID;
+		b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
+	} else {
+		if (!beacon0_valid) {
+			b43legacy_upload_beacon0(dev);
+			cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
+			cmd |= B43legacy_MACCMD_BEACON0_VALID;
+			b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
+		} else if (!beacon1_valid) {
+			b43legacy_upload_beacon1(dev);
+			cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
+			cmd |= B43legacy_MACCMD_BEACON1_VALID;
+			b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
+		}
+	}
+}
+
+static void b43legacy_beacon_update_trigger_work(struct work_struct *work)
+{
+	struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
+					 beacon_update_trigger);
+	struct b43legacy_wldev *dev;
+
+	mutex_lock(&wl->mutex);
+	dev = wl->current_dev;
+	if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) {
+		spin_lock_irq(&wl->irq_lock);
+		/* Update beacon right away or defer to IRQ. */
+		handle_irq_beacon(dev);
+		/* The handler might have updated the IRQ mask. */
+		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
+				  dev->irq_mask);
+		spin_unlock_irq(&wl->irq_lock);
+	}
+	mutex_unlock(&wl->mutex);
+}
+
+/* Asynchronously update the packet templates in template RAM.
+ * Locking: Requires wl->irq_lock to be locked. */
+static void b43legacy_update_templates(struct b43legacy_wl *wl)
+{
+	struct sk_buff *beacon;
+	/* This is the top half of the ansynchronous beacon update. The bottom
+	 * half is the beacon IRQ. Beacon update must be asynchronous to avoid
+	 * sending an invalid beacon. This can happen for example, if the
+	 * firmware transmits a beacon while we are updating it. */
+
+	/* We could modify the existing beacon and set the aid bit in the TIM
+	 * field, but that would probably require resizing and moving of data
+	 * within the beacon template. Simply request a new beacon and let
+	 * mac80211 do the hard work. */
+	beacon = ieee80211_beacon_get(wl->hw, wl->vif, 0);
+	if (unlikely(!beacon))
+		return;
+
+	if (wl->current_beacon)
+		dev_kfree_skb_any(wl->current_beacon);
+	wl->current_beacon = beacon;
+	wl->beacon0_uploaded = false;
+	wl->beacon1_uploaded = false;
+	ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
+}
+
+static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev,
+				     u16 beacon_int)
+{
+	b43legacy_time_lock(dev);
+	if (dev->dev->id.revision >= 3) {
+		b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP,
+				 (beacon_int << 16));
+		b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START,
+				 (beacon_int << 10));
+	} else {
+		b43legacy_write16(dev, 0x606, (beacon_int >> 6));
+		b43legacy_write16(dev, 0x610, beacon_int);
+	}
+	b43legacy_time_unlock(dev);
+	b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
+}
+
+static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
+{
+}
+
+/* Interrupt handler bottom-half */
+static void b43legacy_interrupt_tasklet(struct tasklet_struct *t)
+{
+	struct b43legacy_wldev *dev = from_tasklet(dev, t, isr_tasklet);
+	u32 reason;
+	u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
+	u32 merged_dma_reason = 0;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+
+	B43legacy_WARN_ON(b43legacy_status(dev) <
+			  B43legacy_STAT_INITIALIZED);
+
+	reason = dev->irq_reason;
+	for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
+		dma_reason[i] = dev->dma_reason[i];
+		merged_dma_reason |= dma_reason[i];
+	}
+
+	if (unlikely(reason & B43legacy_IRQ_MAC_TXERR))
+		b43legacyerr(dev->wl, "MAC transmission error\n");
+
+	if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) {
+		b43legacyerr(dev->wl, "PHY transmission error\n");
+		rmb();
+		if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
+			b43legacyerr(dev->wl, "Too many PHY TX errors, "
+					      "restarting the controller\n");
+			b43legacy_controller_restart(dev, "PHY TX errors");
+		}
+	}
+
+	if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK |
+					  B43legacy_DMAIRQ_NONFATALMASK))) {
+		if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) {
+			b43legacyerr(dev->wl, "Fatal DMA error: "
+			       "0x%08X, 0x%08X, 0x%08X, "
+			       "0x%08X, 0x%08X, 0x%08X\n",
+			       dma_reason[0], dma_reason[1],
+			       dma_reason[2], dma_reason[3],
+			       dma_reason[4], dma_reason[5]);
+			b43legacy_controller_restart(dev, "DMA error");
+			spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+			return;
+		}
+		if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK)
+			b43legacyerr(dev->wl, "DMA error: "
+			       "0x%08X, 0x%08X, 0x%08X, "
+			       "0x%08X, 0x%08X, 0x%08X\n",
+			       dma_reason[0], dma_reason[1],
+			       dma_reason[2], dma_reason[3],
+			       dma_reason[4], dma_reason[5]);
+	}
+
+	if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG))
+		handle_irq_ucode_debug(dev);
+	if (reason & B43legacy_IRQ_TBTT_INDI)
+		handle_irq_tbtt_indication(dev);
+	if (reason & B43legacy_IRQ_ATIM_END)
+		handle_irq_atim_end(dev);
+	if (reason & B43legacy_IRQ_BEACON)
+		handle_irq_beacon(dev);
+	if (reason & B43legacy_IRQ_PMQ)
+		handle_irq_pmq(dev);
+	if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) {
+		;/*TODO*/
+	}
+	if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
+		handle_irq_noise(dev);
+
+	/* Check the DMA reason registers for received data. */
+	if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) {
+		if (b43legacy_using_pio(dev))
+			b43legacy_pio_rx(dev->pio.queue0);
+		else
+			b43legacy_dma_rx(dev->dma.rx_ring0);
+	}
+	B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE);
+	B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE);
+	if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) {
+		if (b43legacy_using_pio(dev))
+			b43legacy_pio_rx(dev->pio.queue3);
+		else
+			b43legacy_dma_rx(dev->dma.rx_ring3);
+	}
+	B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE);
+	B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE);
+
+	if (reason & B43legacy_IRQ_TX_OK)
+		handle_irq_transmit_status(dev);
+
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+}
+
+static void pio_irq_workaround(struct b43legacy_wldev *dev,
+			       u16 base, int queueidx)
+{
+	u16 rxctl;
+
+	rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL);
+	if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE)
+		dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE;
+	else
+		dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE;
+}
+
+static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason)
+{
+	if (b43legacy_using_pio(dev) &&
+	    (dev->dev->id.revision < 3) &&
+	    (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) {
+		/* Apply a PIO specific workaround to the dma_reasons */
+		pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0);
+		pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1);
+		pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2);
+		pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3);
+	}
+
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason);
+
+	b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON,
+			  dev->dma_reason[0]);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON,
+			  dev->dma_reason[1]);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON,
+			  dev->dma_reason[2]);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON,
+			  dev->dma_reason[3]);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON,
+			  dev->dma_reason[4]);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON,
+			  dev->dma_reason[5]);
+}
+
+/* Interrupt handler top-half */
+static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id)
+{
+	irqreturn_t ret = IRQ_NONE;
+	struct b43legacy_wldev *dev = dev_id;
+	u32 reason;
+
+	B43legacy_WARN_ON(!dev);
+
+	spin_lock(&dev->wl->irq_lock);
+
+	if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
+		/* This can only happen on shared IRQ lines. */
+		goto out;
+	reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+	if (reason == 0xffffffff) /* shared IRQ */
+		goto out;
+	ret = IRQ_HANDLED;
+	reason &= dev->irq_mask;
+	if (!reason)
+		goto out;
+
+	dev->dma_reason[0] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA0_REASON)
+					      & 0x0001DC00;
+	dev->dma_reason[1] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA1_REASON)
+					      & 0x0000DC00;
+	dev->dma_reason[2] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA2_REASON)
+					      & 0x0000DC00;
+	dev->dma_reason[3] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA3_REASON)
+					      & 0x0001DC00;
+	dev->dma_reason[4] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA4_REASON)
+					      & 0x0000DC00;
+	dev->dma_reason[5] = b43legacy_read32(dev,
+					      B43legacy_MMIO_DMA5_REASON)
+					      & 0x0000DC00;
+
+	b43legacy_interrupt_ack(dev, reason);
+	/* Disable all IRQs. They are enabled again in the bottom half. */
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
+	/* Save the reason code and call our bottom half. */
+	dev->irq_reason = reason;
+	tasklet_schedule(&dev->isr_tasklet);
+out:
+	spin_unlock(&dev->wl->irq_lock);
+
+	return ret;
+}
+
+static void b43legacy_release_firmware(struct b43legacy_wldev *dev)
+{
+	release_firmware(dev->fw.ucode);
+	dev->fw.ucode = NULL;
+	release_firmware(dev->fw.pcm);
+	dev->fw.pcm = NULL;
+	release_firmware(dev->fw.initvals);
+	dev->fw.initvals = NULL;
+	release_firmware(dev->fw.initvals_band);
+	dev->fw.initvals_band = NULL;
+}
+
+static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl)
+{
+	b43legacyerr(wl, "You must go to https://wireless.wiki.kernel.org/en/"
+		     "users/Drivers/b43#devicefirmware "
+		     "and download the correct firmware (version 3).\n");
+}
+
+static void b43legacy_fw_cb(const struct firmware *firmware, void *context)
+{
+	struct b43legacy_wldev *dev = context;
+
+	dev->fwp = firmware;
+	complete(&dev->fw_load_complete);
+}
+
+static int do_request_fw(struct b43legacy_wldev *dev,
+			 const char *name,
+			 const struct firmware **fw, bool async)
+{
+	char path[sizeof(modparam_fwpostfix) + 32];
+	struct b43legacy_fw_header *hdr;
+	u32 size;
+	int err;
+
+	if (!name)
+		return 0;
+
+	snprintf(path, ARRAY_SIZE(path),
+		 "b43legacy%s/%s.fw",
+		 modparam_fwpostfix, name);
+	b43legacyinfo(dev->wl, "Loading firmware %s\n", path);
+	if (async) {
+		init_completion(&dev->fw_load_complete);
+		err = request_firmware_nowait(THIS_MODULE, 1, path,
+					      dev->dev->dev, GFP_KERNEL,
+					      dev, b43legacy_fw_cb);
+		if (err) {
+			b43legacyerr(dev->wl, "Unable to load firmware\n");
+			return err;
+		}
+		/* stall here until fw ready */
+		wait_for_completion(&dev->fw_load_complete);
+		if (!dev->fwp)
+			err = -EINVAL;
+		*fw = dev->fwp;
+	} else {
+		err = request_firmware(fw, path, dev->dev->dev);
+	}
+	if (err) {
+		b43legacyerr(dev->wl, "Firmware file \"%s\" not found "
+		       "or load failed.\n", path);
+		return err;
+	}
+	if ((*fw)->size < sizeof(struct b43legacy_fw_header))
+		goto err_format;
+	hdr = (struct b43legacy_fw_header *)((*fw)->data);
+	switch (hdr->type) {
+	case B43legacy_FW_TYPE_UCODE:
+	case B43legacy_FW_TYPE_PCM:
+		size = be32_to_cpu(hdr->size);
+		if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
+			goto err_format;
+		fallthrough;
+	case B43legacy_FW_TYPE_IV:
+		if (hdr->ver != 1)
+			goto err_format;
+		break;
+	default:
+		goto err_format;
+	}
+
+	return err;
+
+err_format:
+	b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
+	return -EPROTO;
+}
+
+static int b43legacy_one_core_attach(struct ssb_device *dev,
+				     struct b43legacy_wl *wl);
+static void b43legacy_one_core_detach(struct ssb_device *dev);
+
+static void b43legacy_request_firmware(struct work_struct *work)
+{
+	struct b43legacy_wl *wl = container_of(work,
+				  struct b43legacy_wl, firmware_load);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	struct b43legacy_firmware *fw = &dev->fw;
+	const u8 rev = dev->dev->id.revision;
+	const char *filename;
+	int err;
+
+	if (!fw->ucode) {
+		if (rev == 2)
+			filename = "ucode2";
+		else if (rev == 4)
+			filename = "ucode4";
+		else
+			filename = "ucode5";
+		err = do_request_fw(dev, filename, &fw->ucode, true);
+		if (err)
+			goto err_load;
+	}
+	if (!fw->pcm) {
+		if (rev < 5)
+			filename = "pcm4";
+		else
+			filename = "pcm5";
+		err = do_request_fw(dev, filename, &fw->pcm, false);
+		if (err)
+			goto err_load;
+	}
+	if (!fw->initvals) {
+		switch (dev->phy.type) {
+		case B43legacy_PHYTYPE_B:
+		case B43legacy_PHYTYPE_G:
+			if ((rev >= 5) && (rev <= 10))
+				filename = "b0g0initvals5";
+			else if (rev == 2 || rev == 4)
+				filename = "b0g0initvals2";
+			else
+				goto err_no_initvals;
+			break;
+		default:
+			goto err_no_initvals;
+		}
+		err = do_request_fw(dev, filename, &fw->initvals, false);
+		if (err)
+			goto err_load;
+	}
+	if (!fw->initvals_band) {
+		switch (dev->phy.type) {
+		case B43legacy_PHYTYPE_B:
+		case B43legacy_PHYTYPE_G:
+			if ((rev >= 5) && (rev <= 10))
+				filename = "b0g0bsinitvals5";
+			else if (rev >= 11)
+				filename = NULL;
+			else if (rev == 2 || rev == 4)
+				filename = NULL;
+			else
+				goto err_no_initvals;
+			break;
+		default:
+			goto err_no_initvals;
+		}
+		err = do_request_fw(dev, filename, &fw->initvals_band, false);
+		if (err)
+			goto err_load;
+	}
+	err = ieee80211_register_hw(wl->hw);
+	if (err)
+		goto err_one_core_detach;
+	return;
+
+err_one_core_detach:
+	b43legacy_one_core_detach(dev->dev);
+	goto error;
+
+err_load:
+	b43legacy_print_fw_helptext(dev->wl);
+	goto error;
+
+err_no_initvals:
+	err = -ENODEV;
+	b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, "
+	       "core rev %u\n", dev->phy.type, rev);
+	goto error;
+
+error:
+	b43legacy_release_firmware(dev);
+	return;
+}
+
+static int b43legacy_upload_microcode(struct b43legacy_wldev *dev)
+{
+	struct wiphy *wiphy = dev->wl->hw->wiphy;
+	const size_t hdr_len = sizeof(struct b43legacy_fw_header);
+	const __be32 *data;
+	unsigned int i;
+	unsigned int len;
+	u16 fwrev;
+	u16 fwpatch;
+	u16 fwdate;
+	u16 fwtime;
+	u32 tmp, macctl;
+	int err = 0;
+
+	/* Jump the microcode PSM to offset 0 */
+	macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN);
+	macctl |= B43legacy_MACCTL_PSM_JMP0;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+	/* Zero out all microcode PSM registers and shared memory. */
+	for (i = 0; i < 64; i++)
+		b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0);
+	for (i = 0; i < 4096; i += 2)
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0);
+
+	/* Upload Microcode. */
+	data = (__be32 *) (dev->fw.ucode->data + hdr_len);
+	len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
+	b43legacy_shm_control_word(dev,
+				   B43legacy_SHM_UCODE |
+				   B43legacy_SHM_AUTOINC_W,
+				   0x0000);
+	for (i = 0; i < len; i++) {
+		b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
+				    be32_to_cpu(data[i]));
+		udelay(10);
+	}
+
+	if (dev->fw.pcm) {
+		/* Upload PCM data. */
+		data = (__be32 *) (dev->fw.pcm->data + hdr_len);
+		len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
+		b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA);
+		b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000);
+		/* No need for autoinc bit in SHM_HW */
+		b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB);
+		for (i = 0; i < len; i++) {
+			b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
+					  be32_to_cpu(data[i]));
+			udelay(10);
+		}
+	}
+
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
+			  B43legacy_IRQ_ALL);
+
+	/* Start the microcode PSM */
+	macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	macctl &= ~B43legacy_MACCTL_PSM_JMP0;
+	macctl |= B43legacy_MACCTL_PSM_RUN;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+
+	/* Wait for the microcode to load and respond */
+	i = 0;
+	while (1) {
+		tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+		if (tmp == B43legacy_IRQ_MAC_SUSPENDED)
+			break;
+		i++;
+		if (i >= B43legacy_IRQWAIT_MAX_RETRIES) {
+			b43legacyerr(dev->wl, "Microcode not responding\n");
+			b43legacy_print_fw_helptext(dev->wl);
+			err = -ENODEV;
+			goto error;
+		}
+		msleep_interruptible(50);
+		if (signal_pending(current)) {
+			err = -EINTR;
+			goto error;
+		}
+	}
+	/* dummy read follows */
+	b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+
+	/* Get and check the revisions. */
+	fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				     B43legacy_SHM_SH_UCODEREV);
+	fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				       B43legacy_SHM_SH_UCODEPATCH);
+	fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				      B43legacy_SHM_SH_UCODEDATE);
+	fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				      B43legacy_SHM_SH_UCODETIME);
+
+	if (fwrev > 0x128) {
+		b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE."
+			     " Only firmware from binary drivers version 3.x"
+			     " is supported. You must change your firmware"
+			     " files.\n");
+		b43legacy_print_fw_helptext(dev->wl);
+		err = -EOPNOTSUPP;
+		goto error;
+	}
+	b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u "
+		      "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch,
+		      (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
+		      (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F,
+		      fwtime & 0x1F);
+
+	dev->fw.rev = fwrev;
+	dev->fw.patch = fwpatch;
+
+	snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
+			dev->fw.rev, dev->fw.patch);
+	wiphy->hw_version = dev->dev->id.coreid;
+
+	return 0;
+
+error:
+	macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	macctl &= ~B43legacy_MACCTL_PSM_RUN;
+	macctl |= B43legacy_MACCTL_PSM_JMP0;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+
+	return err;
+}
+
+static int b43legacy_write_initvals(struct b43legacy_wldev *dev,
+				    const struct b43legacy_iv *ivals,
+				    size_t count,
+				    size_t array_size)
+{
+	const struct b43legacy_iv *iv;
+	u16 offset;
+	size_t i;
+	bool bit32;
+
+	BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6);
+	iv = ivals;
+	for (i = 0; i < count; i++) {
+		if (array_size < sizeof(iv->offset_size))
+			goto err_format;
+		array_size -= sizeof(iv->offset_size);
+		offset = be16_to_cpu(iv->offset_size);
+		bit32 = !!(offset & B43legacy_IV_32BIT);
+		offset &= B43legacy_IV_OFFSET_MASK;
+		if (offset >= 0x1000)
+			goto err_format;
+		if (bit32) {
+			u32 value;
+
+			if (array_size < sizeof(iv->data.d32))
+				goto err_format;
+			array_size -= sizeof(iv->data.d32);
+
+			value = get_unaligned_be32(&iv->data.d32);
+			b43legacy_write32(dev, offset, value);
+
+			iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
+							sizeof(__be16) +
+							sizeof(__be32));
+		} else {
+			u16 value;
+
+			if (array_size < sizeof(iv->data.d16))
+				goto err_format;
+			array_size -= sizeof(iv->data.d16);
+
+			value = be16_to_cpu(iv->data.d16);
+			b43legacy_write16(dev, offset, value);
+
+			iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
+							sizeof(__be16) +
+							sizeof(__be16));
+		}
+	}
+	if (array_size)
+		goto err_format;
+
+	return 0;
+
+err_format:
+	b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n");
+	b43legacy_print_fw_helptext(dev->wl);
+
+	return -EPROTO;
+}
+
+static int b43legacy_upload_initvals(struct b43legacy_wldev *dev)
+{
+	const size_t hdr_len = sizeof(struct b43legacy_fw_header);
+	const struct b43legacy_fw_header *hdr;
+	struct b43legacy_firmware *fw = &dev->fw;
+	const struct b43legacy_iv *ivals;
+	size_t count;
+	int err;
+
+	hdr = (const struct b43legacy_fw_header *)(fw->initvals->data);
+	ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len);
+	count = be32_to_cpu(hdr->size);
+	err = b43legacy_write_initvals(dev, ivals, count,
+				 fw->initvals->size - hdr_len);
+	if (err)
+		goto out;
+	if (fw->initvals_band) {
+		hdr = (const struct b43legacy_fw_header *)
+		      (fw->initvals_band->data);
+		ivals = (const struct b43legacy_iv *)(fw->initvals_band->data
+			+ hdr_len);
+		count = be32_to_cpu(hdr->size);
+		err = b43legacy_write_initvals(dev, ivals, count,
+					 fw->initvals_band->size - hdr_len);
+		if (err)
+			goto out;
+	}
+out:
+
+	return err;
+}
+
+/* Initialize the GPIOs
+ * https://bcm-specs.sipsolutions.net/GPIO
+ */
+static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
+{
+	struct ssb_bus *bus = dev->dev->bus;
+	struct ssb_device *gpiodev, *pcidev = NULL;
+	u32 mask;
+	u32 set;
+
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
+			  b43legacy_read32(dev,
+			  B43legacy_MMIO_MACCTL)
+			  & 0xFFFF3FFF);
+
+	b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
+			  b43legacy_read16(dev,
+			  B43legacy_MMIO_GPIO_MASK)
+			  | 0x000F);
+
+	mask = 0x0000001F;
+	set = 0x0000000F;
+	if (dev->dev->bus->chip_id == 0x4301) {
+		mask |= 0x0060;
+		set |= 0x0060;
+	}
+	if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) {
+		b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
+				  b43legacy_read16(dev,
+				  B43legacy_MMIO_GPIO_MASK)
+				  | 0x0200);
+		mask |= 0x0200;
+		set |= 0x0200;
+	}
+	if (dev->dev->id.revision >= 2)
+		mask  |= 0x0010; /* FIXME: This is redundant. */
+
+#ifdef CONFIG_SSB_DRIVER_PCICORE
+	pcidev = bus->pcicore.dev;
+#endif
+	gpiodev = bus->chipco.dev ? : pcidev;
+	if (!gpiodev)
+		return 0;
+	ssb_write32(gpiodev, B43legacy_GPIO_CONTROL,
+		    (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL)
+		     & ~mask) | set);
+
+	return 0;
+}
+
+/* Turn off all GPIO stuff. Call this on module unload, for example. */
+static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev)
+{
+	struct ssb_bus *bus = dev->dev->bus;
+	struct ssb_device *gpiodev, *pcidev = NULL;
+
+#ifdef CONFIG_SSB_DRIVER_PCICORE
+	pcidev = bus->pcicore.dev;
+#endif
+	gpiodev = bus->chipco.dev ? : pcidev;
+	if (!gpiodev)
+		return;
+	ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0);
+}
+
+/* http://bcm-specs.sipsolutions.net/EnableMac */
+void b43legacy_mac_enable(struct b43legacy_wldev *dev)
+{
+	dev->mac_suspended--;
+	B43legacy_WARN_ON(dev->mac_suspended < 0);
+	B43legacy_WARN_ON(irqs_disabled());
+	if (dev->mac_suspended == 0) {
+		b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
+				  b43legacy_read32(dev,
+				  B43legacy_MMIO_MACCTL)
+				  | B43legacy_MACCTL_ENABLED);
+		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
+				  B43legacy_IRQ_MAC_SUSPENDED);
+		/* the next two are dummy reads */
+		b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+		b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+		b43legacy_power_saving_ctl_bits(dev, -1, -1);
+
+		/* Re-enable IRQs. */
+		spin_lock_irq(&dev->wl->irq_lock);
+		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
+				  dev->irq_mask);
+		spin_unlock_irq(&dev->wl->irq_lock);
+	}
+}
+
+/* https://bcm-specs.sipsolutions.net/SuspendMAC */
+void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
+{
+	int i;
+	u32 tmp;
+
+	might_sleep();
+	B43legacy_WARN_ON(irqs_disabled());
+	B43legacy_WARN_ON(dev->mac_suspended < 0);
+
+	if (dev->mac_suspended == 0) {
+		/* Mask IRQs before suspending MAC. Otherwise
+		 * the MAC stays busy and won't suspend. */
+		spin_lock_irq(&dev->wl->irq_lock);
+		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
+		spin_unlock_irq(&dev->wl->irq_lock);
+		b43legacy_synchronize_irq(dev);
+
+		b43legacy_power_saving_ctl_bits(dev, -1, 1);
+		b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
+				  b43legacy_read32(dev,
+				  B43legacy_MMIO_MACCTL)
+				  & ~B43legacy_MACCTL_ENABLED);
+		b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+		for (i = 40; i; i--) {
+			tmp = b43legacy_read32(dev,
+					       B43legacy_MMIO_GEN_IRQ_REASON);
+			if (tmp & B43legacy_IRQ_MAC_SUSPENDED)
+				goto out;
+			msleep(1);
+		}
+		b43legacyerr(dev->wl, "MAC suspend failed\n");
+	}
+out:
+	dev->mac_suspended++;
+}
+
+static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	u32 ctl;
+	u16 cfp_pretbtt;
+
+	ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	/* Reset status to STA infrastructure mode. */
+	ctl &= ~B43legacy_MACCTL_AP;
+	ctl &= ~B43legacy_MACCTL_KEEP_CTL;
+	ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP;
+	ctl &= ~B43legacy_MACCTL_KEEP_BAD;
+	ctl &= ~B43legacy_MACCTL_PROMISC;
+	ctl &= ~B43legacy_MACCTL_BEACPROMISC;
+	ctl |= B43legacy_MACCTL_INFRA;
+
+	if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
+		ctl |= B43legacy_MACCTL_AP;
+	else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))
+		ctl &= ~B43legacy_MACCTL_INFRA;
+
+	if (wl->filter_flags & FIF_CONTROL)
+		ctl |= B43legacy_MACCTL_KEEP_CTL;
+	if (wl->filter_flags & FIF_FCSFAIL)
+		ctl |= B43legacy_MACCTL_KEEP_BAD;
+	if (wl->filter_flags & FIF_PLCPFAIL)
+		ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
+	if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
+		ctl |= B43legacy_MACCTL_BEACPROMISC;
+
+	/* Workaround: On old hardware the HW-MAC-address-filter
+	 * doesn't work properly, so always run promisc in filter
+	 * it in software. */
+	if (dev->dev->id.revision <= 4)
+		ctl |= B43legacy_MACCTL_PROMISC;
+
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
+
+	cfp_pretbtt = 2;
+	if ((ctl & B43legacy_MACCTL_INFRA) &&
+	    !(ctl & B43legacy_MACCTL_AP)) {
+		if (dev->dev->bus->chip_id == 0x4306 &&
+		    dev->dev->bus->chip_rev == 3)
+			cfp_pretbtt = 100;
+		else
+			cfp_pretbtt = 50;
+	}
+	b43legacy_write16(dev, 0x612, cfp_pretbtt);
+}
+
+static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
+					u16 rate,
+					int is_ofdm)
+{
+	u16 offset;
+
+	if (is_ofdm) {
+		offset = 0x480;
+		offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
+	} else {
+		offset = 0x4C0;
+		offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
+	}
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
+			      b43legacy_shm_read16(dev,
+			      B43legacy_SHM_SHARED, offset));
+}
+
+static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
+{
+	switch (dev->phy.type) {
+	case B43legacy_PHYTYPE_G:
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
+		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
+		fallthrough;
+	case B43legacy_PHYTYPE_B:
+		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
+		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
+		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
+		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+}
+
+/* Set the TX-Antenna for management frames sent by firmware. */
+static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
+					  int antenna)
+{
+	u16 ant = 0;
+	u16 tmp;
+
+	switch (antenna) {
+	case B43legacy_ANTENNA0:
+		ant |= B43legacy_TX4_PHY_ANT0;
+		break;
+	case B43legacy_ANTENNA1:
+		ant |= B43legacy_TX4_PHY_ANT1;
+		break;
+	case B43legacy_ANTENNA_AUTO:
+		ant |= B43legacy_TX4_PHY_ANTLAST;
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+
+	/* FIXME We also need to set the other flags of the PHY control
+	 * field somewhere. */
+
+	/* For Beacons */
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				   B43legacy_SHM_SH_BEACPHYCTL);
+	tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_BEACPHYCTL, tmp);
+	/* For ACK/CTS */
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				   B43legacy_SHM_SH_ACKCTSPHYCTL);
+	tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
+	/* For Probe Resposes */
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+				   B43legacy_SHM_SH_PRPHYCTL);
+	tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_PRPHYCTL, tmp);
+}
+
+/* This is the opposite of b43legacy_chip_init() */
+static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
+{
+	b43legacy_radio_turn_off(dev, 1);
+	b43legacy_gpio_cleanup(dev);
+	/* firmware is released later */
+}
+
+/* Initialize the chip
+ * https://bcm-specs.sipsolutions.net/ChipInit
+ */
+static int b43legacy_chip_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	int err;
+	int tmp;
+	u32 value32, macctl;
+	u16 value16;
+
+	/* Initialize the MAC control */
+	macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
+	if (dev->phy.gmode)
+		macctl |= B43legacy_MACCTL_GMODE;
+	macctl |= B43legacy_MACCTL_INFRA;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+
+	err = b43legacy_upload_microcode(dev);
+	if (err)
+		goto out; /* firmware is released later */
+
+	err = b43legacy_gpio_init(dev);
+	if (err)
+		goto out; /* firmware is released later */
+
+	err = b43legacy_upload_initvals(dev);
+	if (err)
+		goto err_gpio_clean;
+	b43legacy_radio_turn_on(dev);
+
+	b43legacy_write16(dev, 0x03E6, 0x0000);
+	err = b43legacy_phy_init(dev);
+	if (err)
+		goto err_radio_off;
+
+	/* Select initial Interference Mitigation. */
+	tmp = phy->interfmode;
+	phy->interfmode = B43legacy_INTERFMODE_NONE;
+	b43legacy_radio_set_interference_mitigation(dev, tmp);
+
+	b43legacy_phy_set_antenna_diversity(dev);
+	b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
+
+	if (phy->type == B43legacy_PHYTYPE_B) {
+		value16 = b43legacy_read16(dev, 0x005E);
+		value16 |= 0x0004;
+		b43legacy_write16(dev, 0x005E, value16);
+	}
+	b43legacy_write32(dev, 0x0100, 0x01000000);
+	if (dev->dev->id.revision < 5)
+		b43legacy_write32(dev, 0x010C, 0x01000000);
+
+	value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	value32 &= ~B43legacy_MACCTL_INFRA;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
+	value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	value32 |= B43legacy_MACCTL_INFRA;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
+
+	if (b43legacy_using_pio(dev)) {
+		b43legacy_write32(dev, 0x0210, 0x00000100);
+		b43legacy_write32(dev, 0x0230, 0x00000100);
+		b43legacy_write32(dev, 0x0250, 0x00000100);
+		b43legacy_write32(dev, 0x0270, 0x00000100);
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
+				      0x0000);
+	}
+
+	/* Probe Response Timeout value */
+	/* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
+
+	/* Initially set the wireless operation mode. */
+	b43legacy_adjust_opmode(dev);
+
+	if (dev->dev->id.revision < 3) {
+		b43legacy_write16(dev, 0x060E, 0x0000);
+		b43legacy_write16(dev, 0x0610, 0x8000);
+		b43legacy_write16(dev, 0x0604, 0x0000);
+		b43legacy_write16(dev, 0x0606, 0x0200);
+	} else {
+		b43legacy_write32(dev, 0x0188, 0x80000000);
+		b43legacy_write32(dev, 0x018C, 0x02000000);
+	}
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
+	b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
+
+	value32 = ssb_read32(dev->dev, SSB_TMSLOW);
+	value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
+	ssb_write32(dev->dev, SSB_TMSLOW, value32);
+
+	b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
+			  dev->dev->bus->chipco.fast_pwrup_delay);
+
+	/* PHY TX errors counter. */
+	atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
+
+	B43legacy_WARN_ON(err != 0);
+	b43legacydbg(dev->wl, "Chip initialized\n");
+out:
+	return err;
+
+err_radio_off:
+	b43legacy_radio_turn_off(dev, 1);
+err_gpio_clean:
+	b43legacy_gpio_cleanup(dev);
+	goto out;
+}
+
+static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
+		return;
+
+	b43legacy_mac_suspend(dev);
+	b43legacy_phy_lo_g_measure(dev);
+	b43legacy_mac_enable(dev);
+}
+
+static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
+{
+	b43legacy_phy_lo_mark_all_unused(dev);
+	if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
+		b43legacy_mac_suspend(dev);
+		b43legacy_calc_nrssi_slope(dev);
+		b43legacy_mac_enable(dev);
+	}
+}
+
+static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
+{
+	/* Update device statistics. */
+	b43legacy_calculate_link_quality(dev);
+}
+
+static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
+{
+	b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
+
+	atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
+	wmb();
+}
+
+static void do_periodic_work(struct b43legacy_wldev *dev)
+{
+	unsigned int state;
+
+	state = dev->periodic_state;
+	if (state % 8 == 0)
+		b43legacy_periodic_every120sec(dev);
+	if (state % 4 == 0)
+		b43legacy_periodic_every60sec(dev);
+	if (state % 2 == 0)
+		b43legacy_periodic_every30sec(dev);
+	b43legacy_periodic_every15sec(dev);
+}
+
+/* Periodic work locking policy:
+ * 	The whole periodic work handler is protected by
+ * 	wl->mutex. If another lock is needed somewhere in the
+ * 	pwork callchain, it's acquired in-place, where it's needed.
+ */
+static void b43legacy_periodic_work_handler(struct work_struct *work)
+{
+	struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
+					     periodic_work.work);
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long delay;
+
+	mutex_lock(&wl->mutex);
+
+	if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
+		goto out;
+	if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
+		goto out_requeue;
+
+	do_periodic_work(dev);
+
+	dev->periodic_state++;
+out_requeue:
+	if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
+		delay = msecs_to_jiffies(50);
+	else
+		delay = round_jiffies_relative(HZ * 15);
+	ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
+out:
+	mutex_unlock(&wl->mutex);
+}
+
+static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
+{
+	struct delayed_work *work = &dev->periodic_work;
+
+	dev->periodic_state = 0;
+	INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
+	ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
+}
+
+/* Validate access to the chip (SHM) */
+static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
+{
+	u32 value;
+	u32 shm_backup;
+
+	shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
+	b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
+	if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
+				 0xAA5555AA)
+		goto error;
+	b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
+	if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
+				 0x55AAAA55)
+		goto error;
+	b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
+
+	value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	if ((value | B43legacy_MACCTL_GMODE) !=
+	    (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
+		goto error;
+
+	value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
+	if (value)
+		goto error;
+
+	return 0;
+error:
+	b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
+	return -ENODEV;
+}
+
+static void b43legacy_security_init(struct b43legacy_wldev *dev)
+{
+	dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
+	B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
+	dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+					0x0056);
+	/* KTP is a word address, but we address SHM bytewise.
+	 * So multiply by two.
+	 */
+	dev->ktp *= 2;
+	if (dev->dev->id.revision >= 5)
+		/* Number of RCMTA address slots */
+		b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
+				  dev->max_nr_keys - 8);
+}
+
+#ifdef CONFIG_B43LEGACY_HWRNG
+static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
+{
+	struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
+	unsigned long flags;
+
+	/* Don't take wl->mutex here, as it could deadlock with
+	 * hwrng internal locking. It's not needed to take
+	 * wl->mutex here, anyway. */
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	*data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	return (sizeof(u16));
+}
+#endif
+
+static void b43legacy_rng_exit(struct b43legacy_wl *wl)
+{
+#ifdef CONFIG_B43LEGACY_HWRNG
+	if (wl->rng_initialized)
+		hwrng_unregister(&wl->rng);
+#endif
+}
+
+static int b43legacy_rng_init(struct b43legacy_wl *wl)
+{
+	int err = 0;
+
+#ifdef CONFIG_B43LEGACY_HWRNG
+	snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
+		 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
+	wl->rng.name = wl->rng_name;
+	wl->rng.data_read = b43legacy_rng_read;
+	wl->rng.priv = (unsigned long)wl;
+	wl->rng_initialized = 1;
+	err = hwrng_register(&wl->rng);
+	if (err) {
+		wl->rng_initialized = 0;
+		b43legacyerr(wl, "Failed to register the random "
+		       "number generator (%d)\n", err);
+	}
+
+#endif
+	return err;
+}
+
+static void b43legacy_tx_work(struct work_struct *work)
+{
+	struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
+				  tx_work);
+	struct b43legacy_wldev *dev;
+	struct sk_buff *skb;
+	int queue_num;
+	int err = 0;
+
+	mutex_lock(&wl->mutex);
+	dev = wl->current_dev;
+	if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) {
+		mutex_unlock(&wl->mutex);
+		return;
+	}
+
+	for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
+		while (skb_queue_len(&wl->tx_queue[queue_num])) {
+			skb = skb_dequeue(&wl->tx_queue[queue_num]);
+			if (b43legacy_using_pio(dev))
+				err = b43legacy_pio_tx(dev, skb);
+			else
+				err = b43legacy_dma_tx(dev, skb);
+			if (err == -ENOSPC) {
+				wl->tx_queue_stopped[queue_num] = 1;
+				ieee80211_stop_queue(wl->hw, queue_num);
+				skb_queue_head(&wl->tx_queue[queue_num], skb);
+				break;
+			}
+			if (unlikely(err))
+				dev_kfree_skb(skb); /* Drop it */
+			err = 0;
+		}
+
+		if (!err)
+			wl->tx_queue_stopped[queue_num] = 0;
+	}
+
+	mutex_unlock(&wl->mutex);
+}
+
+static void b43legacy_op_tx(struct ieee80211_hw *hw,
+			    struct ieee80211_tx_control *control,
+			    struct sk_buff *skb)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+
+	if (unlikely(skb->len < 2 + 2 + 6)) {
+		/* Too short, this can't be a valid frame. */
+		dev_kfree_skb_any(skb);
+		return;
+	}
+	B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags);
+
+	skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
+	if (!wl->tx_queue_stopped[skb->queue_mapping])
+		ieee80211_queue_work(wl->hw, &wl->tx_work);
+	else
+		ieee80211_stop_queue(wl->hw, skb->queue_mapping);
+}
+
+static int b43legacy_op_conf_tx(struct ieee80211_hw *hw,
+				struct ieee80211_vif *vif,
+				unsigned int link_id, u16 queue,
+				const struct ieee80211_tx_queue_params *params)
+{
+	return 0;
+}
+
+static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
+				  struct ieee80211_low_level_stats *stats)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	unsigned long flags;
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	memcpy(stats, &wl->ieee_stats, sizeof(*stats));
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	return 0;
+}
+
+static const char *phymode_to_string(unsigned int phymode)
+{
+	switch (phymode) {
+	case B43legacy_PHYMODE_B:
+		return "B";
+	case B43legacy_PHYMODE_G:
+		return "G";
+	default:
+		B43legacy_BUG_ON(1);
+	}
+	return "";
+}
+
+static int find_wldev_for_phymode(struct b43legacy_wl *wl,
+				  unsigned int phymode,
+				  struct b43legacy_wldev **dev,
+				  bool *gmode)
+{
+	struct b43legacy_wldev *d;
+
+	list_for_each_entry(d, &wl->devlist, list) {
+		if (d->phy.possible_phymodes & phymode) {
+			/* Ok, this device supports the PHY-mode.
+			 * Set the gmode bit. */
+			*gmode = true;
+			*dev = d;
+
+			return 0;
+		}
+	}
+
+	return -ESRCH;
+}
+
+static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
+{
+	struct ssb_device *sdev = dev->dev;
+	u32 tmslow;
+
+	tmslow = ssb_read32(sdev, SSB_TMSLOW);
+	tmslow &= ~B43legacy_TMSLOW_GMODE;
+	tmslow |= B43legacy_TMSLOW_PHYRESET;
+	tmslow |= SSB_TMSLOW_FGC;
+	ssb_write32(sdev, SSB_TMSLOW, tmslow);
+	msleep(1);
+
+	tmslow = ssb_read32(sdev, SSB_TMSLOW);
+	tmslow &= ~SSB_TMSLOW_FGC;
+	tmslow |= B43legacy_TMSLOW_PHYRESET;
+	ssb_write32(sdev, SSB_TMSLOW, tmslow);
+	msleep(1);
+}
+
+/* Expects wl->mutex locked */
+static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
+				      unsigned int new_mode)
+{
+	struct b43legacy_wldev *up_dev;
+	struct b43legacy_wldev *down_dev;
+	int err;
+	bool gmode = false;
+	int prev_status;
+
+	err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
+	if (err) {
+		b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
+		       phymode_to_string(new_mode));
+		return err;
+	}
+	if ((up_dev == wl->current_dev) &&
+	    (!!wl->current_dev->phy.gmode == !!gmode))
+		/* This device is already running. */
+		return 0;
+	b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
+	       phymode_to_string(new_mode));
+	down_dev = wl->current_dev;
+
+	prev_status = b43legacy_status(down_dev);
+	/* Shutdown the currently running core. */
+	if (prev_status >= B43legacy_STAT_STARTED)
+		b43legacy_wireless_core_stop(down_dev);
+	if (prev_status >= B43legacy_STAT_INITIALIZED)
+		b43legacy_wireless_core_exit(down_dev);
+
+	if (down_dev != up_dev)
+		/* We switch to a different core, so we put PHY into
+		 * RESET on the old core. */
+		b43legacy_put_phy_into_reset(down_dev);
+
+	/* Now start the new core. */
+	up_dev->phy.gmode = gmode;
+	if (prev_status >= B43legacy_STAT_INITIALIZED) {
+		err = b43legacy_wireless_core_init(up_dev);
+		if (err) {
+			b43legacyerr(wl, "Fatal: Could not initialize device"
+				     " for newly selected %s-PHY mode\n",
+				     phymode_to_string(new_mode));
+			goto init_failure;
+		}
+	}
+	if (prev_status >= B43legacy_STAT_STARTED) {
+		err = b43legacy_wireless_core_start(up_dev);
+		if (err) {
+			b43legacyerr(wl, "Fatal: Could not start device for "
+			       "newly selected %s-PHY mode\n",
+			       phymode_to_string(new_mode));
+			b43legacy_wireless_core_exit(up_dev);
+			goto init_failure;
+		}
+	}
+	B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
+
+	b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
+
+	wl->current_dev = up_dev;
+
+	return 0;
+init_failure:
+	/* Whoops, failed to init the new core. No core is operating now. */
+	wl->current_dev = NULL;
+	return err;
+}
+
+/* Write the short and long frame retry limit values. */
+static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
+				       unsigned int short_retry,
+				       unsigned int long_retry)
+{
+	/* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
+	 * the chip-internal counter. */
+	short_retry = min(short_retry, (unsigned int)0xF);
+	long_retry = min(long_retry, (unsigned int)0xF);
+
+	b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
+	b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
+}
+
+static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
+				   u32 changed)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev;
+	struct b43legacy_phy *phy;
+	struct ieee80211_conf *conf = &hw->conf;
+	unsigned long flags;
+	unsigned int new_phymode = 0xFFFF;
+	int antenna_tx;
+	int err = 0;
+
+	antenna_tx = B43legacy_ANTENNA_DEFAULT;
+
+	mutex_lock(&wl->mutex);
+	dev = wl->current_dev;
+	phy = &dev->phy;
+
+	if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
+		b43legacy_set_retry_limits(dev,
+					   conf->short_frame_max_tx_count,
+					   conf->long_frame_max_tx_count);
+	changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
+	if (!changed)
+		goto out_unlock_mutex;
+
+	/* Switch the PHY mode (if necessary). */
+	switch (conf->chandef.chan->band) {
+	case NL80211_BAND_2GHZ:
+		if (phy->type == B43legacy_PHYTYPE_B)
+			new_phymode = B43legacy_PHYMODE_B;
+		else
+			new_phymode = B43legacy_PHYMODE_G;
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+	err = b43legacy_switch_phymode(wl, new_phymode);
+	if (err)
+		goto out_unlock_mutex;
+
+	/* Disable IRQs while reconfiguring the device.
+	 * This makes it possible to drop the spinlock throughout
+	 * the reconfiguration process. */
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
+		spin_unlock_irqrestore(&wl->irq_lock, flags);
+		goto out_unlock_mutex;
+	}
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+	b43legacy_synchronize_irq(dev);
+
+	/* Switch to the requested channel.
+	 * The firmware takes care of races with the TX handler. */
+	if (conf->chandef.chan->hw_value != phy->channel)
+		b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value,
+					      0);
+
+	dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
+
+	/* Adjust the desired TX power level. */
+	if (conf->power_level != 0) {
+		if (conf->power_level != phy->power_level) {
+			phy->power_level = conf->power_level;
+			b43legacy_phy_xmitpower(dev);
+		}
+	}
+
+	/* Antennas for RX and management frame TX. */
+	b43legacy_mgmtframe_txantenna(dev, antenna_tx);
+
+	if (wl->radio_enabled != phy->radio_on) {
+		if (wl->radio_enabled) {
+			b43legacy_radio_turn_on(dev);
+			b43legacyinfo(dev->wl, "Radio turned on by software\n");
+			if (!dev->radio_hw_enable)
+				b43legacyinfo(dev->wl, "The hardware RF-kill"
+					      " button still turns the radio"
+					      " physically off. Press the"
+					      " button to turn it on.\n");
+		} else {
+			b43legacy_radio_turn_off(dev, 0);
+			b43legacyinfo(dev->wl, "Radio turned off by"
+				      " software\n");
+		}
+	}
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+out_unlock_mutex:
+	mutex_unlock(&wl->mutex);
+
+	return err;
+}
+
+static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
+{
+	struct ieee80211_supported_band *sband =
+		dev->wl->hw->wiphy->bands[NL80211_BAND_2GHZ];
+	const struct ieee80211_rate *rate;
+	int i;
+	u16 basic, direct, offset, basic_offset, rateptr;
+
+	for (i = 0; i < sband->n_bitrates; i++) {
+		rate = &sband->bitrates[i];
+
+		if (b43legacy_is_cck_rate(rate->hw_value)) {
+			direct = B43legacy_SHM_SH_CCKDIRECT;
+			basic = B43legacy_SHM_SH_CCKBASIC;
+			offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
+			offset &= 0xF;
+		} else {
+			direct = B43legacy_SHM_SH_OFDMDIRECT;
+			basic = B43legacy_SHM_SH_OFDMBASIC;
+			offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
+			offset &= 0xF;
+		}
+
+		rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
+
+		if (b43legacy_is_cck_rate(rate->hw_value)) {
+			basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
+			basic_offset &= 0xF;
+		} else {
+			basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
+			basic_offset &= 0xF;
+		}
+
+		/*
+		 * Get the pointer that we need to point to
+		 * from the direct map
+		 */
+		rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+					       direct + 2 * basic_offset);
+		/* and write it to the basic map */
+		b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+				      basic + 2 * offset, rateptr);
+	}
+}
+
+static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
+				    struct ieee80211_vif *vif,
+				    struct ieee80211_bss_conf *conf,
+				    u64 changed)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev;
+	unsigned long flags;
+
+	mutex_lock(&wl->mutex);
+	B43legacy_WARN_ON(wl->vif != vif);
+
+	dev = wl->current_dev;
+
+	/* Disable IRQs while reconfiguring the device.
+	 * This makes it possible to drop the spinlock throughout
+	 * the reconfiguration process. */
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
+		spin_unlock_irqrestore(&wl->irq_lock, flags);
+		goto out_unlock_mutex;
+	}
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
+
+	if (changed & BSS_CHANGED_BSSID) {
+		b43legacy_synchronize_irq(dev);
+
+		if (conf->bssid)
+			memcpy(wl->bssid, conf->bssid, ETH_ALEN);
+		else
+			eth_zero_addr(wl->bssid);
+	}
+
+	if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
+		if (changed & BSS_CHANGED_BEACON &&
+		    (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
+		     b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
+			b43legacy_update_templates(wl);
+
+		if (changed & BSS_CHANGED_BSSID)
+			b43legacy_write_mac_bssid_templates(dev);
+	}
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	b43legacy_mac_suspend(dev);
+
+	if (changed & BSS_CHANGED_BEACON_INT &&
+	    (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
+	     b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
+		b43legacy_set_beacon_int(dev, conf->beacon_int);
+
+	if (changed & BSS_CHANGED_BASIC_RATES)
+		b43legacy_update_basic_rates(dev, conf->basic_rates);
+
+	if (changed & BSS_CHANGED_ERP_SLOT) {
+		if (conf->use_short_slot)
+			b43legacy_short_slot_timing_enable(dev);
+		else
+			b43legacy_short_slot_timing_disable(dev);
+	}
+
+	b43legacy_mac_enable(dev);
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
+	/* XXX: why? */
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+ out_unlock_mutex:
+	mutex_unlock(&wl->mutex);
+}
+
+static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
+					  unsigned int changed,
+					  unsigned int *fflags,u64 multicast)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	unsigned long flags;
+
+	if (!dev) {
+		*fflags = 0;
+		return;
+	}
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	*fflags &= FIF_ALLMULTI |
+		  FIF_FCSFAIL |
+		  FIF_PLCPFAIL |
+		  FIF_CONTROL |
+		  FIF_OTHER_BSS |
+		  FIF_BCN_PRBRESP_PROMISC;
+
+	changed &= FIF_ALLMULTI |
+		   FIF_FCSFAIL |
+		   FIF_PLCPFAIL |
+		   FIF_CONTROL |
+		   FIF_OTHER_BSS |
+		   FIF_BCN_PRBRESP_PROMISC;
+
+	wl->filter_flags = *fflags;
+
+	if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
+		b43legacy_adjust_opmode(dev);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+}
+
+/* Locking: wl->mutex */
+static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long flags;
+	int queue_num;
+
+	if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
+		return;
+
+	/* Disable and sync interrupts. We must do this before than
+	 * setting the status to INITIALIZED, as the interrupt handler
+	 * won't care about IRQs then. */
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
+	b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+	b43legacy_synchronize_irq(dev);
+
+	b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
+
+	mutex_unlock(&wl->mutex);
+	/* Must unlock as it would otherwise deadlock. No races here.
+	 * Cancel the possibly running self-rearming periodic work. */
+	cancel_delayed_work_sync(&dev->periodic_work);
+	cancel_work_sync(&wl->tx_work);
+	mutex_lock(&wl->mutex);
+
+	/* Drain all TX queues. */
+	for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
+		while (skb_queue_len(&wl->tx_queue[queue_num]))
+			dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
+	}
+
+	b43legacy_mac_suspend(dev);
+	free_irq(dev->dev->irq, dev);
+	b43legacydbg(wl, "Wireless interface stopped\n");
+}
+
+/* Locking: wl->mutex */
+static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
+{
+	int err;
+
+	B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
+
+	drain_txstatus_queue(dev);
+	err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
+			  IRQF_SHARED, KBUILD_MODNAME, dev);
+	if (err) {
+		b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
+		       dev->dev->irq);
+		goto out;
+	}
+	/* We are ready to run. */
+	ieee80211_wake_queues(dev->wl->hw);
+	b43legacy_set_status(dev, B43legacy_STAT_STARTED);
+
+	/* Start data flow (TX/RX) */
+	b43legacy_mac_enable(dev);
+	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
+
+	/* Start maintenance work */
+	b43legacy_periodic_tasks_setup(dev);
+
+	b43legacydbg(dev->wl, "Wireless interface started\n");
+out:
+	return err;
+}
+
+/* Get PHY and RADIO versioning numbers */
+static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u32 tmp;
+	u8 analog_type;
+	u8 phy_type;
+	u8 phy_rev;
+	u16 radio_manuf;
+	u16 radio_ver;
+	u16 radio_rev;
+	int unsupported = 0;
+
+	/* Get PHY versioning */
+	tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
+	analog_type = (tmp & B43legacy_PHYVER_ANALOG)
+		      >> B43legacy_PHYVER_ANALOG_SHIFT;
+	phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
+	phy_rev = (tmp & B43legacy_PHYVER_VERSION);
+	switch (phy_type) {
+	case B43legacy_PHYTYPE_B:
+		if (phy_rev != 2 && phy_rev != 4
+		    && phy_rev != 6 && phy_rev != 7)
+			unsupported = 1;
+		break;
+	case B43legacy_PHYTYPE_G:
+		if (phy_rev > 8)
+			unsupported = 1;
+		break;
+	default:
+		unsupported = 1;
+	}
+	if (unsupported) {
+		b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
+		       "(Analog %u, Type %u, Revision %u)\n",
+		       analog_type, phy_type, phy_rev);
+		return -EOPNOTSUPP;
+	}
+	b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
+	       analog_type, phy_type, phy_rev);
+
+
+	/* Get RADIO versioning */
+	if (dev->dev->bus->chip_id == 0x4317) {
+		if (dev->dev->bus->chip_rev == 0)
+			tmp = 0x3205017F;
+		else if (dev->dev->bus->chip_rev == 1)
+			tmp = 0x4205017F;
+		else
+			tmp = 0x5205017F;
+	} else {
+		b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
+				  B43legacy_RADIOCTL_ID);
+		tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
+		tmp <<= 16;
+		b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
+				  B43legacy_RADIOCTL_ID);
+		tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
+	}
+	radio_manuf = (tmp & 0x00000FFF);
+	radio_ver = (tmp & 0x0FFFF000) >> 12;
+	radio_rev = (tmp & 0xF0000000) >> 28;
+	switch (phy_type) {
+	case B43legacy_PHYTYPE_B:
+		if ((radio_ver & 0xFFF0) != 0x2050)
+			unsupported = 1;
+		break;
+	case B43legacy_PHYTYPE_G:
+		if (radio_ver != 0x2050)
+			unsupported = 1;
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+	if (unsupported) {
+		b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
+		       "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
+		       radio_manuf, radio_ver, radio_rev);
+		return -EOPNOTSUPP;
+	}
+	b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
+		     " Revision %u\n", radio_manuf, radio_ver, radio_rev);
+
+
+	phy->radio_manuf = radio_manuf;
+	phy->radio_ver = radio_ver;
+	phy->radio_rev = radio_rev;
+
+	phy->analog = analog_type;
+	phy->type = phy_type;
+	phy->rev = phy_rev;
+
+	return 0;
+}
+
+static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
+				      struct b43legacy_phy *phy)
+{
+	struct b43legacy_lopair *lo;
+	int i;
+
+	memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
+	memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
+
+	/* Assume the radio is enabled. If it's not enabled, the state will
+	 * immediately get fixed on the first periodic work run. */
+	dev->radio_hw_enable = true;
+
+	phy->savedpctlreg = 0xFFFF;
+	phy->aci_enable = false;
+	phy->aci_wlan_automatic = false;
+	phy->aci_hw_rssi = false;
+
+	lo = phy->_lo_pairs;
+	if (lo)
+		memset(lo, 0, sizeof(struct b43legacy_lopair) *
+				     B43legacy_LO_COUNT);
+	phy->max_lb_gain = 0;
+	phy->trsw_rx_gain = 0;
+
+	/* Set default attenuation values. */
+	phy->bbatt = b43legacy_default_baseband_attenuation(dev);
+	phy->rfatt = b43legacy_default_radio_attenuation(dev);
+	phy->txctl1 = b43legacy_default_txctl1(dev);
+	phy->txpwr_offset = 0;
+
+	/* NRSSI */
+	phy->nrssislope = 0;
+	for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
+		phy->nrssi[i] = -1000;
+	for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
+		phy->nrssi_lt[i] = i;
+
+	phy->lofcal = 0xFFFF;
+	phy->initval = 0xFFFF;
+
+	phy->interfmode = B43legacy_INTERFMODE_NONE;
+	phy->channel = 0xFF;
+}
+
+static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
+{
+	/* Flags */
+	dev->dfq_valid = false;
+
+	/* Stats */
+	memset(&dev->stats, 0, sizeof(dev->stats));
+
+	setup_struct_phy_for_init(dev, &dev->phy);
+
+	/* IRQ related flags */
+	dev->irq_reason = 0;
+	memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
+	dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
+
+	dev->mac_suspended = 1;
+
+	/* Noise calculation context */
+	memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
+}
+
+static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
+					  bool idle) {
+	u16 pu_delay = 1050;
+
+	if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
+		pu_delay = 500;
+	if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
+		pu_delay = max(pu_delay, (u16)2400);
+
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_SPUWKUP, pu_delay);
+}
+
+/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
+static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
+{
+	u16 pretbtt;
+
+	/* The time value is in microseconds. */
+	if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
+		pretbtt = 2;
+	else
+		pretbtt = 250;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_PRETBTT, pretbtt);
+	b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
+}
+
+/* Shutdown a wireless core */
+/* Locking: wl->mutex */
+static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u32 macctl;
+
+	B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
+	if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
+		return;
+	b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
+
+	/* Stop the microcode PSM. */
+	macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	macctl &= ~B43legacy_MACCTL_PSM_RUN;
+	macctl |= B43legacy_MACCTL_PSM_JMP0;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
+
+	b43legacy_leds_exit(dev);
+	b43legacy_rng_exit(dev->wl);
+	b43legacy_pio_free(dev);
+	b43legacy_dma_free(dev);
+	b43legacy_chip_exit(dev);
+	b43legacy_radio_turn_off(dev, 1);
+	b43legacy_switch_analog(dev, 0);
+	if (phy->dyn_tssi_tbl)
+		kfree(phy->tssi2dbm);
+	kfree(phy->lo_control);
+	phy->lo_control = NULL;
+	if (dev->wl->current_beacon) {
+		dev_kfree_skb_any(dev->wl->current_beacon);
+		dev->wl->current_beacon = NULL;
+	}
+
+	ssb_device_disable(dev->dev, 0);
+	ssb_bus_may_powerdown(dev->dev->bus);
+}
+
+static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	int i;
+
+	/* Set default attenuation values. */
+	phy->bbatt = b43legacy_default_baseband_attenuation(dev);
+	phy->rfatt = b43legacy_default_radio_attenuation(dev);
+	phy->txctl1 = b43legacy_default_txctl1(dev);
+	phy->txctl2 = 0xFFFF;
+	phy->txpwr_offset = 0;
+
+	/* NRSSI */
+	phy->nrssislope = 0;
+	for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
+		phy->nrssi[i] = -1000;
+	for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
+		phy->nrssi_lt[i] = i;
+
+	phy->lofcal = 0xFFFF;
+	phy->initval = 0xFFFF;
+
+	phy->aci_enable = false;
+	phy->aci_wlan_automatic = false;
+	phy->aci_hw_rssi = false;
+
+	phy->antenna_diversity = 0xFFFF;
+	memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
+	memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
+
+	/* Flags */
+	phy->calibrated = 0;
+
+	if (phy->_lo_pairs)
+		memset(phy->_lo_pairs, 0,
+		       sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
+	memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
+}
+
+/* Initialize a wireless core */
+static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	struct ssb_bus *bus = dev->dev->bus;
+	struct b43legacy_phy *phy = &dev->phy;
+	struct ssb_sprom *sprom = &dev->dev->bus->sprom;
+	int err;
+	u32 hf;
+	u32 tmp;
+
+	B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
+
+	err = ssb_bus_powerup(bus, 0);
+	if (err)
+		goto out;
+	if (!ssb_device_is_enabled(dev->dev)) {
+		tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
+		b43legacy_wireless_core_reset(dev, tmp);
+	}
+
+	if ((phy->type == B43legacy_PHYTYPE_B) ||
+	    (phy->type == B43legacy_PHYTYPE_G)) {
+		phy->_lo_pairs = kcalloc(B43legacy_LO_COUNT,
+					 sizeof(struct b43legacy_lopair),
+					 GFP_KERNEL);
+		if (!phy->_lo_pairs)
+			return -ENOMEM;
+	}
+	setup_struct_wldev_for_init(dev);
+
+	err = b43legacy_phy_init_tssi2dbm_table(dev);
+	if (err)
+		goto err_kfree_lo_control;
+
+	/* Enable IRQ routing to this device. */
+	ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
+
+	prepare_phy_data_for_init(dev);
+	b43legacy_phy_calibrate(dev);
+	err = b43legacy_chip_init(dev);
+	if (err)
+		goto err_kfree_tssitbl;
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_WLCOREREV,
+			      dev->dev->id.revision);
+	hf = b43legacy_hf_read(dev);
+	if (phy->type == B43legacy_PHYTYPE_G) {
+		hf |= B43legacy_HF_SYMW;
+		if (phy->rev == 1)
+			hf |= B43legacy_HF_GDCW;
+		if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
+			hf |= B43legacy_HF_OFDMPABOOST;
+	} else if (phy->type == B43legacy_PHYTYPE_B) {
+		hf |= B43legacy_HF_SYMW;
+		if (phy->rev >= 2 && phy->radio_ver == 0x2050)
+			hf &= ~B43legacy_HF_GDCW;
+	}
+	b43legacy_hf_write(dev, hf);
+
+	b43legacy_set_retry_limits(dev,
+				   B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
+				   B43legacy_DEFAULT_LONG_RETRY_LIMIT);
+
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      0x0044, 3);
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      0x0046, 2);
+
+	/* Disable sending probe responses from firmware.
+	 * Setting the MaxTime to one usec will always trigger
+	 * a timeout, so we never send any probe resp.
+	 * A timeout of zero is infinite. */
+	b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
+			      B43legacy_SHM_SH_PRMAXTIME, 1);
+
+	b43legacy_rate_memory_init(dev);
+
+	/* Minimum Contention Window */
+	if (phy->type == B43legacy_PHYTYPE_B)
+		b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
+				      0x0003, 31);
+	else
+		b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
+				      0x0003, 15);
+	/* Maximum Contention Window */
+	b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
+			      0x0004, 1023);
+
+	do {
+		if (b43legacy_using_pio(dev))
+			err = b43legacy_pio_init(dev);
+		else {
+			err = b43legacy_dma_init(dev);
+			if (!err)
+				b43legacy_qos_init(dev);
+		}
+	} while (err == -EAGAIN);
+	if (err)
+		goto err_chip_exit;
+
+	b43legacy_set_synth_pu_delay(dev, 1);
+
+	ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
+	b43legacy_upload_card_macaddress(dev);
+	b43legacy_security_init(dev);
+	b43legacy_rng_init(wl);
+
+	ieee80211_wake_queues(dev->wl->hw);
+	b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
+
+	b43legacy_leds_init(dev);
+out:
+	return err;
+
+err_chip_exit:
+	b43legacy_chip_exit(dev);
+err_kfree_tssitbl:
+	if (phy->dyn_tssi_tbl)
+		kfree(phy->tssi2dbm);
+err_kfree_lo_control:
+	kfree(phy->lo_control);
+	phy->lo_control = NULL;
+	ssb_bus_may_powerdown(bus);
+	B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
+	return err;
+}
+
+static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
+				      struct ieee80211_vif *vif)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev;
+	unsigned long flags;
+	int err = -EOPNOTSUPP;
+
+	/* TODO: allow AP devices to coexist */
+
+	if (vif->type != NL80211_IFTYPE_AP &&
+	    vif->type != NL80211_IFTYPE_STATION &&
+	    vif->type != NL80211_IFTYPE_ADHOC)
+		return -EOPNOTSUPP;
+
+	mutex_lock(&wl->mutex);
+	if (wl->operating)
+		goto out_mutex_unlock;
+
+	b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
+
+	dev = wl->current_dev;
+	wl->operating = true;
+	wl->vif = vif;
+	wl->if_type = vif->type;
+	memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_adjust_opmode(dev);
+	b43legacy_set_pretbtt(dev);
+	b43legacy_set_synth_pu_delay(dev, 0);
+	b43legacy_upload_card_macaddress(dev);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	err = 0;
+ out_mutex_unlock:
+	mutex_unlock(&wl->mutex);
+
+	return err;
+}
+
+static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
+					  struct ieee80211_vif *vif)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	unsigned long flags;
+
+	b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
+
+	mutex_lock(&wl->mutex);
+
+	B43legacy_WARN_ON(!wl->operating);
+	B43legacy_WARN_ON(wl->vif != vif);
+	wl->vif = NULL;
+
+	wl->operating = false;
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_adjust_opmode(dev);
+	eth_zero_addr(wl->mac_addr);
+	b43legacy_upload_card_macaddress(dev);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	mutex_unlock(&wl->mutex);
+}
+
+static int b43legacy_op_start(struct ieee80211_hw *hw)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	int did_init = 0;
+	int err = 0;
+
+	/* Kill all old instance specific information to make sure
+	 * the card won't use it in the short timeframe between start
+	 * and mac80211 reconfiguring it. */
+	eth_zero_addr(wl->bssid);
+	eth_zero_addr(wl->mac_addr);
+	wl->filter_flags = 0;
+	wl->beacon0_uploaded = false;
+	wl->beacon1_uploaded = false;
+	wl->beacon_templates_virgin = true;
+	wl->radio_enabled = true;
+
+	mutex_lock(&wl->mutex);
+
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+		err = b43legacy_wireless_core_init(dev);
+		if (err)
+			goto out_mutex_unlock;
+		did_init = 1;
+	}
+
+	if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
+		err = b43legacy_wireless_core_start(dev);
+		if (err) {
+			if (did_init)
+				b43legacy_wireless_core_exit(dev);
+			goto out_mutex_unlock;
+		}
+	}
+
+	wiphy_rfkill_start_polling(hw->wiphy);
+
+out_mutex_unlock:
+	mutex_unlock(&wl->mutex);
+
+	return err;
+}
+
+static void b43legacy_op_stop(struct ieee80211_hw *hw)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+
+	cancel_work_sync(&(wl->beacon_update_trigger));
+
+	mutex_lock(&wl->mutex);
+	if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
+		b43legacy_wireless_core_stop(dev);
+	b43legacy_wireless_core_exit(dev);
+	wl->radio_enabled = false;
+	mutex_unlock(&wl->mutex);
+}
+
+static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
+				       struct ieee80211_sta *sta, bool set)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	unsigned long flags;
+
+	spin_lock_irqsave(&wl->irq_lock, flags);
+	b43legacy_update_templates(wl);
+	spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+	return 0;
+}
+
+static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
+				   struct survey_info *survey)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	struct ieee80211_conf *conf = &hw->conf;
+
+	if (idx != 0)
+		return -ENOENT;
+
+	survey->channel = conf->chandef.chan;
+	survey->filled = SURVEY_INFO_NOISE_DBM;
+	survey->noise = dev->stats.link_noise;
+
+	return 0;
+}
+
+static const struct ieee80211_ops b43legacy_hw_ops = {
+	.tx			= b43legacy_op_tx,
+	.conf_tx		= b43legacy_op_conf_tx,
+	.add_interface		= b43legacy_op_add_interface,
+	.remove_interface	= b43legacy_op_remove_interface,
+	.config			= b43legacy_op_dev_config,
+	.bss_info_changed	= b43legacy_op_bss_info_changed,
+	.configure_filter	= b43legacy_op_configure_filter,
+	.get_stats		= b43legacy_op_get_stats,
+	.start			= b43legacy_op_start,
+	.stop			= b43legacy_op_stop,
+	.set_tim		= b43legacy_op_beacon_set_tim,
+	.get_survey		= b43legacy_op_get_survey,
+	.rfkill_poll		= b43legacy_rfkill_poll,
+};
+
+/* Hard-reset the chip. Do not call this directly.
+ * Use b43legacy_controller_restart()
+ */
+static void b43legacy_chip_reset(struct work_struct *work)
+{
+	struct b43legacy_wldev *dev =
+		container_of(work, struct b43legacy_wldev, restart_work);
+	struct b43legacy_wl *wl = dev->wl;
+	int err = 0;
+	int prev_status;
+
+	mutex_lock(&wl->mutex);
+
+	prev_status = b43legacy_status(dev);
+	/* Bring the device down... */
+	if (prev_status >= B43legacy_STAT_STARTED)
+		b43legacy_wireless_core_stop(dev);
+	if (prev_status >= B43legacy_STAT_INITIALIZED)
+		b43legacy_wireless_core_exit(dev);
+
+	/* ...and up again. */
+	if (prev_status >= B43legacy_STAT_INITIALIZED) {
+		err = b43legacy_wireless_core_init(dev);
+		if (err)
+			goto out;
+	}
+	if (prev_status >= B43legacy_STAT_STARTED) {
+		err = b43legacy_wireless_core_start(dev);
+		if (err) {
+			b43legacy_wireless_core_exit(dev);
+			goto out;
+		}
+	}
+out:
+	if (err)
+		wl->current_dev = NULL; /* Failed to init the dev. */
+	mutex_unlock(&wl->mutex);
+	if (err)
+		b43legacyerr(wl, "Controller restart FAILED\n");
+	else
+		b43legacyinfo(wl, "Controller restarted\n");
+}
+
+static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
+				 int have_bphy,
+				 int have_gphy)
+{
+	struct ieee80211_hw *hw = dev->wl->hw;
+	struct b43legacy_phy *phy = &dev->phy;
+
+	phy->possible_phymodes = 0;
+	if (have_bphy) {
+		hw->wiphy->bands[NL80211_BAND_2GHZ] =
+			&b43legacy_band_2GHz_BPHY;
+		phy->possible_phymodes |= B43legacy_PHYMODE_B;
+	}
+
+	if (have_gphy) {
+		hw->wiphy->bands[NL80211_BAND_2GHZ] =
+			&b43legacy_band_2GHz_GPHY;
+		phy->possible_phymodes |= B43legacy_PHYMODE_G;
+	}
+
+	return 0;
+}
+
+static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
+{
+	/* We release firmware that late to not be required to re-request
+	 * is all the time when we reinit the core. */
+	b43legacy_release_firmware(dev);
+}
+
+static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	struct ssb_bus *bus = dev->dev->bus;
+	struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
+	int err;
+	int have_bphy = 0;
+	int have_gphy = 0;
+	u32 tmp;
+
+	/* Do NOT do any device initialization here.
+	 * Do it in wireless_core_init() instead.
+	 * This function is for gathering basic information about the HW, only.
+	 * Also some structs may be set up here. But most likely you want to
+	 * have that in core_init(), too.
+	 */
+
+	err = ssb_bus_powerup(bus, 0);
+	if (err) {
+		b43legacyerr(wl, "Bus powerup failed\n");
+		goto out;
+	}
+	/* Get the PHY type. */
+	if (dev->dev->id.revision >= 5) {
+		u32 tmshigh;
+
+		tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
+		have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
+		if (!have_gphy)
+			have_bphy = 1;
+	} else if (dev->dev->id.revision == 4)
+		have_gphy = 1;
+	else
+		have_bphy = 1;
+
+	dev->phy.gmode = (have_gphy || have_bphy);
+	dev->phy.radio_on = true;
+	tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
+	b43legacy_wireless_core_reset(dev, tmp);
+
+	err = b43legacy_phy_versioning(dev);
+	if (err)
+		goto err_powerdown;
+	/* Check if this device supports multiband. */
+	if (!pdev ||
+	    (pdev->device != 0x4312 &&
+	     pdev->device != 0x4319 &&
+	     pdev->device != 0x4324)) {
+		/* No multiband support. */
+		have_bphy = 0;
+		have_gphy = 0;
+		switch (dev->phy.type) {
+		case B43legacy_PHYTYPE_B:
+			have_bphy = 1;
+			break;
+		case B43legacy_PHYTYPE_G:
+			have_gphy = 1;
+			break;
+		default:
+			B43legacy_BUG_ON(1);
+		}
+	}
+	dev->phy.gmode = (have_gphy || have_bphy);
+	tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
+	b43legacy_wireless_core_reset(dev, tmp);
+
+	err = b43legacy_validate_chipaccess(dev);
+	if (err)
+		goto err_powerdown;
+	err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
+	if (err)
+		goto err_powerdown;
+
+	/* Now set some default "current_dev" */
+	if (!wl->current_dev)
+		wl->current_dev = dev;
+	INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
+
+	b43legacy_radio_turn_off(dev, 1);
+	b43legacy_switch_analog(dev, 0);
+	ssb_device_disable(dev->dev, 0);
+	ssb_bus_may_powerdown(bus);
+
+out:
+	return err;
+
+err_powerdown:
+	ssb_bus_may_powerdown(bus);
+	return err;
+}
+
+static void b43legacy_one_core_detach(struct ssb_device *dev)
+{
+	struct b43legacy_wldev *wldev;
+	struct b43legacy_wl *wl;
+
+	/* Do not cancel ieee80211-workqueue based work here.
+	 * See comment in b43legacy_remove(). */
+
+	wldev = ssb_get_drvdata(dev);
+	wl = wldev->wl;
+	b43legacy_debugfs_remove_device(wldev);
+	b43legacy_wireless_core_detach(wldev);
+	list_del(&wldev->list);
+	wl->nr_devs--;
+	ssb_set_drvdata(dev, NULL);
+	kfree(wldev);
+}
+
+static int b43legacy_one_core_attach(struct ssb_device *dev,
+				     struct b43legacy_wl *wl)
+{
+	struct b43legacy_wldev *wldev;
+	int err = -ENOMEM;
+
+	wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
+	if (!wldev)
+		goto out;
+
+	wldev->dev = dev;
+	wldev->wl = wl;
+	b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
+	wldev->bad_frames_preempt = modparam_bad_frames_preempt;
+	tasklet_setup(&wldev->isr_tasklet, b43legacy_interrupt_tasklet);
+	if (modparam_pio)
+		wldev->__using_pio = true;
+	INIT_LIST_HEAD(&wldev->list);
+
+	err = b43legacy_wireless_core_attach(wldev);
+	if (err)
+		goto err_kfree_wldev;
+
+	list_add(&wldev->list, &wl->devlist);
+	wl->nr_devs++;
+	ssb_set_drvdata(dev, wldev);
+	b43legacy_debugfs_add_device(wldev);
+out:
+	return err;
+
+err_kfree_wldev:
+	kfree(wldev);
+	return err;
+}
+
+static void b43legacy_sprom_fixup(struct ssb_bus *bus)
+{
+	/* boardflags workarounds */
+	if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
+	    bus->boardinfo.type == 0x4E &&
+	    bus->sprom.board_rev > 0x40)
+		bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
+}
+
+static void b43legacy_wireless_exit(struct ssb_device *dev,
+				  struct b43legacy_wl *wl)
+{
+	struct ieee80211_hw *hw = wl->hw;
+
+	ssb_set_devtypedata(dev, NULL);
+	ieee80211_free_hw(hw);
+}
+
+static int b43legacy_wireless_init(struct ssb_device *dev)
+{
+	struct ssb_sprom *sprom = &dev->bus->sprom;
+	struct ieee80211_hw *hw;
+	struct b43legacy_wl *wl;
+	int err = -ENOMEM;
+	int queue_num;
+
+	b43legacy_sprom_fixup(dev->bus);
+
+	hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
+	if (!hw) {
+		b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
+		goto out;
+	}
+
+	/* fill hw info */
+	ieee80211_hw_set(hw, RX_INCLUDES_FCS);
+	ieee80211_hw_set(hw, SIGNAL_DBM);
+	ieee80211_hw_set(hw, MFP_CAPABLE); /* Allow WPA3 in software */
+
+	hw->wiphy->interface_modes =
+		BIT(NL80211_IFTYPE_AP) |
+		BIT(NL80211_IFTYPE_STATION) |
+		BIT(NL80211_IFTYPE_ADHOC);
+	hw->queues = 1; /* FIXME: hardware has more queues */
+	hw->max_rates = 2;
+	SET_IEEE80211_DEV(hw, dev->dev);
+	if (is_valid_ether_addr(sprom->et1mac))
+		SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
+	else
+		SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
+
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
+
+	/* Get and initialize struct b43legacy_wl */
+	wl = hw_to_b43legacy_wl(hw);
+	memset(wl, 0, sizeof(*wl));
+	wl->hw = hw;
+	spin_lock_init(&wl->irq_lock);
+	spin_lock_init(&wl->leds_lock);
+	mutex_init(&wl->mutex);
+	INIT_LIST_HEAD(&wl->devlist);
+	INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
+	INIT_WORK(&wl->tx_work, b43legacy_tx_work);
+
+	/* Initialize queues and flags. */
+	for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
+		skb_queue_head_init(&wl->tx_queue[queue_num]);
+		wl->tx_queue_stopped[queue_num] = 0;
+	}
+
+	ssb_set_devtypedata(dev, wl);
+	b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
+		      dev->bus->chip_id, dev->id.revision);
+	err = 0;
+out:
+	return err;
+}
+
+static int b43legacy_probe(struct ssb_device *dev,
+			 const struct ssb_device_id *id)
+{
+	struct b43legacy_wl *wl;
+	int err;
+	int first = 0;
+
+	wl = ssb_get_devtypedata(dev);
+	if (!wl) {
+		/* Probing the first core - setup common struct b43legacy_wl */
+		first = 1;
+		err = b43legacy_wireless_init(dev);
+		if (err)
+			goto out;
+		wl = ssb_get_devtypedata(dev);
+		B43legacy_WARN_ON(!wl);
+	}
+	err = b43legacy_one_core_attach(dev, wl);
+	if (err)
+		goto err_wireless_exit;
+
+	/* setup and start work to load firmware */
+	INIT_WORK(&wl->firmware_load, b43legacy_request_firmware);
+	schedule_work(&wl->firmware_load);
+
+out:
+	return err;
+
+err_wireless_exit:
+	if (first)
+		b43legacy_wireless_exit(dev, wl);
+	return err;
+}
+
+static void b43legacy_remove(struct ssb_device *dev)
+{
+	struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
+	struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
+
+	/* We must cancel any work here before unregistering from ieee80211,
+	 * as the ieee80211 unreg will destroy the workqueue. */
+	cancel_work_sync(&wldev->restart_work);
+	cancel_work_sync(&wl->firmware_load);
+	complete(&wldev->fw_load_complete);
+
+	B43legacy_WARN_ON(!wl);
+	if (!wldev->fw.ucode)
+		return;			/* NULL if fw never loaded */
+	if (wl->current_dev == wldev)
+		ieee80211_unregister_hw(wl->hw);
+
+	b43legacy_one_core_detach(dev);
+
+	if (list_empty(&wl->devlist))
+		/* Last core on the chip unregistered.
+		 * We can destroy common struct b43legacy_wl.
+		 */
+		b43legacy_wireless_exit(dev, wl);
+}
+
+/* Perform a hardware reset. This can be called from any context. */
+void b43legacy_controller_restart(struct b43legacy_wldev *dev,
+				  const char *reason)
+{
+	/* Must avoid requeueing, if we are in shutdown. */
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
+		return;
+	b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
+	ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
+}
+
+#ifdef CONFIG_PM
+
+static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
+{
+	struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
+	struct b43legacy_wl *wl = wldev->wl;
+
+	b43legacydbg(wl, "Suspending...\n");
+
+	mutex_lock(&wl->mutex);
+	wldev->suspend_init_status = b43legacy_status(wldev);
+	if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
+		b43legacy_wireless_core_stop(wldev);
+	if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
+		b43legacy_wireless_core_exit(wldev);
+	mutex_unlock(&wl->mutex);
+
+	b43legacydbg(wl, "Device suspended.\n");
+
+	return 0;
+}
+
+static int b43legacy_resume(struct ssb_device *dev)
+{
+	struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
+	struct b43legacy_wl *wl = wldev->wl;
+	int err = 0;
+
+	b43legacydbg(wl, "Resuming...\n");
+
+	mutex_lock(&wl->mutex);
+	if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
+		err = b43legacy_wireless_core_init(wldev);
+		if (err) {
+			b43legacyerr(wl, "Resume failed at core init\n");
+			goto out;
+		}
+	}
+	if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
+		err = b43legacy_wireless_core_start(wldev);
+		if (err) {
+			b43legacy_wireless_core_exit(wldev);
+			b43legacyerr(wl, "Resume failed at core start\n");
+			goto out;
+		}
+	}
+
+	b43legacydbg(wl, "Device resumed.\n");
+out:
+	mutex_unlock(&wl->mutex);
+	return err;
+}
+
+#else	/* CONFIG_PM */
+# define b43legacy_suspend	NULL
+# define b43legacy_resume		NULL
+#endif	/* CONFIG_PM */
+
+static struct ssb_driver b43legacy_ssb_driver = {
+	.name		= KBUILD_MODNAME,
+	.id_table	= b43legacy_ssb_tbl,
+	.probe		= b43legacy_probe,
+	.remove		= b43legacy_remove,
+	.suspend	= b43legacy_suspend,
+	.resume		= b43legacy_resume,
+};
+
+static void b43legacy_print_driverinfo(void)
+{
+	const char *feat_pci = "", *feat_leds = "",
+		   *feat_pio = "", *feat_dma = "";
+
+#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
+	feat_pci = "P";
+#endif
+#ifdef CONFIG_B43LEGACY_LEDS
+	feat_leds = "L";
+#endif
+#ifdef CONFIG_B43LEGACY_PIO
+	feat_pio = "I";
+#endif
+#ifdef CONFIG_B43LEGACY_DMA
+	feat_dma = "D";
+#endif
+	printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
+	       "[ Features: %s%s%s%s ]\n",
+	       feat_pci, feat_leds, feat_pio, feat_dma);
+}
+
+static int __init b43legacy_init(void)
+{
+	int err;
+
+	b43legacy_debugfs_init();
+
+	err = ssb_driver_register(&b43legacy_ssb_driver);
+	if (err)
+		goto err_dfs_exit;
+
+	b43legacy_print_driverinfo();
+
+	return err;
+
+err_dfs_exit:
+	b43legacy_debugfs_exit();
+	return err;
+}
+
+static void __exit b43legacy_exit(void)
+{
+	ssb_driver_unregister(&b43legacy_ssb_driver);
+	b43legacy_debugfs_exit();
+}
+
+module_init(b43legacy_init)
+module_exit(b43legacy_exit)
diff --git a/drivers/net/wireless/broadcom/b43legacy/main.h b/drivers/net/wireless/broadcom/b43legacy/main.h
new file mode 100644
index 000000000..85edbc8c1
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/main.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+  Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
+  Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
+  Copyright (c) 2005  Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (c) 2005  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.
+
+
+*/
+
+#ifndef B43legacy_MAIN_H_
+#define B43legacy_MAIN_H_
+
+#include "b43legacy.h"
+
+
+#define P4D_BYT3S(magic, nr_bytes)	u8 __p4dding##magic[nr_bytes]
+#define P4D_BYTES(line, nr_bytes)	P4D_BYT3S(line, nr_bytes)
+/* Magic helper macro to pad structures. Ignore those above. It's magic. */
+#define PAD_BYTES(nr_bytes)		P4D_BYTES(__LINE__ , (nr_bytes))
+
+
+/* Lightweight function to convert a frequency (in Mhz) to a channel number. */
+static inline
+u8 b43legacy_freq_to_channel_bg(int freq)
+{
+	u8 channel;
+
+	if (freq == 2484)
+		channel = 14;
+	else
+		channel = (freq - 2407) / 5;
+
+	return channel;
+}
+static inline
+u8 b43legacy_freq_to_channel(struct b43legacy_wldev *dev,
+			     int freq)
+{
+	return b43legacy_freq_to_channel_bg(freq);
+}
+
+/* Lightweight function to convert a channel number to a frequency (in Mhz). */
+static inline
+int b43legacy_channel_to_freq_bg(u8 channel)
+{
+	int freq;
+
+	if (channel == 14)
+		freq = 2484;
+	else
+		freq = 2407 + (5 * channel);
+
+	return freq;
+}
+
+static inline
+int b43legacy_channel_to_freq(struct b43legacy_wldev *dev,
+			      u8 channel)
+{
+	return b43legacy_channel_to_freq_bg(channel);
+}
+
+static inline
+int b43legacy_is_cck_rate(int rate)
+{
+	return (rate == B43legacy_CCK_RATE_1MB ||
+		rate == B43legacy_CCK_RATE_2MB ||
+		rate == B43legacy_CCK_RATE_5MB ||
+		rate == B43legacy_CCK_RATE_11MB);
+}
+
+static inline
+int b43legacy_is_ofdm_rate(int rate)
+{
+	return !b43legacy_is_cck_rate(rate);
+}
+
+void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf);
+void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf);
+
+u32 b43legacy_shm_read32(struct b43legacy_wldev *dev,
+			 u16 routing, u16 offset);
+u16 b43legacy_shm_read16(struct b43legacy_wldev *dev,
+			 u16 routing, u16 offset);
+void b43legacy_shm_write32(struct b43legacy_wldev *dev,
+			 u16 routing, u16 offset,
+			 u32 value);
+void b43legacy_shm_write16(struct b43legacy_wldev *dev,
+			 u16 routing, u16 offset,
+			 u16 value);
+
+u32 b43legacy_hf_read(struct b43legacy_wldev *dev);
+void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value);
+
+void b43legacy_dummy_transmission(struct b43legacy_wldev *dev);
+
+void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags);
+
+void b43legacy_mac_suspend(struct b43legacy_wldev *dev);
+void b43legacy_mac_enable(struct b43legacy_wldev *dev);
+
+void b43legacy_controller_restart(struct b43legacy_wldev *dev,
+				  const char *reason);
+
+#endif /* B43legacy_MAIN_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/phy.c b/drivers/net/wireless/broadcom/b43legacy/phy.c
new file mode 100644
index 000000000..c1395e622
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/phy.c
@@ -0,0 +1,2233 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <stefano.brivio@polimi.it>
+		     Michael Buesch <m@bues.ch>
+		     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.
+
+
+*/
+
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "b43legacy.h"
+#include "phy.h"
+#include "main.h"
+#include "radio.h"
+#include "ilt.h"
+
+
+static const s8 b43legacy_tssi2dbm_b_table[] = {
+	0x4D, 0x4C, 0x4B, 0x4A,
+	0x4A, 0x49, 0x48, 0x47,
+	0x47, 0x46, 0x45, 0x45,
+	0x44, 0x43, 0x42, 0x42,
+	0x41, 0x40, 0x3F, 0x3E,
+	0x3D, 0x3C, 0x3B, 0x3A,
+	0x39, 0x38, 0x37, 0x36,
+	0x35, 0x34, 0x32, 0x31,
+	0x30, 0x2F, 0x2D, 0x2C,
+	0x2B, 0x29, 0x28, 0x26,
+	0x25, 0x23, 0x21, 0x1F,
+	0x1D, 0x1A, 0x17, 0x14,
+	0x10, 0x0C, 0x06, 0x00,
+	  -7,   -7,   -7,   -7,
+	  -7,   -7,   -7,   -7,
+	  -7,   -7,   -7,   -7,
+};
+
+static const s8 b43legacy_tssi2dbm_g_table[] = {
+	 77,  77,  77,  76,
+	 76,  76,  75,  75,
+	 74,  74,  73,  73,
+	 73,  72,  72,  71,
+	 71,  70,  70,  69,
+	 68,  68,  67,  67,
+	 66,  65,  65,  64,
+	 63,  63,  62,  61,
+	 60,  59,  58,  57,
+	 56,  55,  54,  53,
+	 52,  50,  49,  47,
+	 45,  43,  40,  37,
+	 33,  28,  22,  14,
+	  5,  -7, -20, -20,
+	-20, -20, -20, -20,
+	-20, -20, -20, -20,
+};
+
+static void b43legacy_phy_initg(struct b43legacy_wldev *dev);
+
+/* Lock the PHY registers against concurrent access from the microcode.
+ * This lock is nonrecursive. */
+void b43legacy_phy_lock(struct b43legacy_wldev *dev)
+{
+#if B43legacy_DEBUG
+	B43legacy_WARN_ON(dev->phy.phy_locked);
+	dev->phy.phy_locked = 1;
+#endif
+
+	if (dev->dev->id.revision < 3) {
+		b43legacy_mac_suspend(dev);
+	} else {
+		if (!b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP))
+			b43legacy_power_saving_ctl_bits(dev, -1, 1);
+	}
+}
+
+void b43legacy_phy_unlock(struct b43legacy_wldev *dev)
+{
+#if B43legacy_DEBUG
+	B43legacy_WARN_ON(!dev->phy.phy_locked);
+	dev->phy.phy_locked = 0;
+#endif
+
+	if (dev->dev->id.revision < 3) {
+		b43legacy_mac_enable(dev);
+	} else {
+		if (!b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP))
+			b43legacy_power_saving_ctl_bits(dev, -1, -1);
+	}
+}
+
+u16 b43legacy_phy_read(struct b43legacy_wldev *dev, u16 offset)
+{
+	b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset);
+	return b43legacy_read16(dev, B43legacy_MMIO_PHY_DATA);
+}
+
+void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val)
+{
+	b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset);
+	b43legacy_write16(dev, B43legacy_MMIO_PHY_DATA, val);
+}
+
+void b43legacy_phy_calibrate(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	b43legacy_read32(dev, B43legacy_MMIO_MACCTL); /* Dummy read. */
+	if (phy->calibrated)
+		return;
+	if (phy->type == B43legacy_PHYTYPE_G && phy->rev == 1) {
+		b43legacy_wireless_core_reset(dev, 0);
+		b43legacy_phy_initg(dev);
+		b43legacy_wireless_core_reset(dev, B43legacy_TMSLOW_GMODE);
+	}
+	phy->calibrated = 1;
+}
+
+/* initialize B PHY power control
+ * as described in https://bcm-specs.sipsolutions.net/InitPowerControl
+ */
+static void b43legacy_phy_init_pctl(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 saved_batt = 0;
+	u16 saved_ratt = 0;
+	u16 saved_txctl1 = 0;
+	int must_reset_txpower = 0;
+
+	B43legacy_BUG_ON(!(phy->type == B43legacy_PHYTYPE_B ||
+			  phy->type == B43legacy_PHYTYPE_G));
+	if (is_bcm_board_vendor(dev) &&
+	    (dev->dev->bus->boardinfo.type == 0x0416))
+		return;
+
+	b43legacy_phy_write(dev, 0x0028, 0x8018);
+	b43legacy_write16(dev, 0x03E6, b43legacy_read16(dev, 0x03E6) & 0xFFDF);
+
+	if (phy->type == B43legacy_PHYTYPE_G) {
+		if (!phy->gmode)
+			return;
+		b43legacy_phy_write(dev, 0x047A, 0xC111);
+	}
+	if (phy->savedpctlreg != 0xFFFF)
+		return;
+#ifdef CONFIG_B43LEGACY_DEBUG
+	if (phy->manual_txpower_control)
+		return;
+#endif
+
+	if (phy->type == B43legacy_PHYTYPE_B &&
+	    phy->rev >= 2 &&
+	    phy->radio_ver == 0x2050)
+		b43legacy_radio_write16(dev, 0x0076,
+					b43legacy_radio_read16(dev, 0x0076)
+					| 0x0084);
+	else {
+		saved_batt = phy->bbatt;
+		saved_ratt = phy->rfatt;
+		saved_txctl1 = phy->txctl1;
+		if ((phy->radio_rev >= 6) && (phy->radio_rev <= 8)
+		    && /*FIXME: incomplete specs for 5 < revision < 9 */ 0)
+			b43legacy_radio_set_txpower_bg(dev, 0xB, 0x1F, 0);
+		else
+			b43legacy_radio_set_txpower_bg(dev, 0xB, 9, 0);
+		must_reset_txpower = 1;
+	}
+	b43legacy_dummy_transmission(dev);
+
+	phy->savedpctlreg = b43legacy_phy_read(dev, B43legacy_PHY_G_PCTL);
+
+	if (must_reset_txpower)
+		b43legacy_radio_set_txpower_bg(dev, saved_batt, saved_ratt,
+					       saved_txctl1);
+	else
+		b43legacy_radio_write16(dev, 0x0076, b43legacy_radio_read16(dev,
+					0x0076) & 0xFF7B);
+	b43legacy_radio_clear_tssi(dev);
+}
+
+static void b43legacy_phy_agcsetup(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 offset = 0x0000;
+
+	if (phy->rev == 1)
+		offset = 0x4C00;
+
+	b43legacy_ilt_write(dev, offset, 0x00FE);
+	b43legacy_ilt_write(dev, offset + 1, 0x000D);
+	b43legacy_ilt_write(dev, offset + 2, 0x0013);
+	b43legacy_ilt_write(dev, offset + 3, 0x0019);
+
+	if (phy->rev == 1) {
+		b43legacy_ilt_write(dev, 0x1800, 0x2710);
+		b43legacy_ilt_write(dev, 0x1801, 0x9B83);
+		b43legacy_ilt_write(dev, 0x1802, 0x9B83);
+		b43legacy_ilt_write(dev, 0x1803, 0x0F8D);
+		b43legacy_phy_write(dev, 0x0455, 0x0004);
+	}
+
+	b43legacy_phy_write(dev, 0x04A5, (b43legacy_phy_read(dev, 0x04A5)
+					  & 0x00FF) | 0x5700);
+	b43legacy_phy_write(dev, 0x041A, (b43legacy_phy_read(dev, 0x041A)
+					  & 0xFF80) | 0x000F);
+	b43legacy_phy_write(dev, 0x041A, (b43legacy_phy_read(dev, 0x041A)
+					  & 0xC07F) | 0x2B80);
+	b43legacy_phy_write(dev, 0x048C, (b43legacy_phy_read(dev, 0x048C)
+					  & 0xF0FF) | 0x0300);
+
+	b43legacy_radio_write16(dev, 0x007A,
+				b43legacy_radio_read16(dev, 0x007A)
+				| 0x0008);
+
+	b43legacy_phy_write(dev, 0x04A0, (b43legacy_phy_read(dev, 0x04A0)
+			    & 0xFFF0) | 0x0008);
+	b43legacy_phy_write(dev, 0x04A1, (b43legacy_phy_read(dev, 0x04A1)
+			    & 0xF0FF) | 0x0600);
+	b43legacy_phy_write(dev, 0x04A2, (b43legacy_phy_read(dev, 0x04A2)
+			    & 0xF0FF) | 0x0700);
+	b43legacy_phy_write(dev, 0x04A0, (b43legacy_phy_read(dev, 0x04A0)
+			    & 0xF0FF) | 0x0100);
+
+	if (phy->rev == 1)
+		b43legacy_phy_write(dev, 0x04A2,
+				    (b43legacy_phy_read(dev, 0x04A2)
+				    & 0xFFF0) | 0x0007);
+
+	b43legacy_phy_write(dev, 0x0488, (b43legacy_phy_read(dev, 0x0488)
+			    & 0xFF00) | 0x001C);
+	b43legacy_phy_write(dev, 0x0488, (b43legacy_phy_read(dev, 0x0488)
+			    & 0xC0FF) | 0x0200);
+	b43legacy_phy_write(dev, 0x0496, (b43legacy_phy_read(dev, 0x0496)
+			    & 0xFF00) | 0x001C);
+	b43legacy_phy_write(dev, 0x0489, (b43legacy_phy_read(dev, 0x0489)
+			    & 0xFF00) | 0x0020);
+	b43legacy_phy_write(dev, 0x0489, (b43legacy_phy_read(dev, 0x0489)
+			    & 0xC0FF) | 0x0200);
+	b43legacy_phy_write(dev, 0x0482, (b43legacy_phy_read(dev, 0x0482)
+			    & 0xFF00) | 0x002E);
+	b43legacy_phy_write(dev, 0x0496, (b43legacy_phy_read(dev, 0x0496)
+			    & 0x00FF) | 0x1A00);
+	b43legacy_phy_write(dev, 0x0481, (b43legacy_phy_read(dev, 0x0481)
+			    & 0xFF00) | 0x0028);
+	b43legacy_phy_write(dev, 0x0481, (b43legacy_phy_read(dev, 0x0481)
+			    & 0x00FF) | 0x2C00);
+
+	if (phy->rev == 1) {
+		b43legacy_phy_write(dev, 0x0430, 0x092B);
+		b43legacy_phy_write(dev, 0x041B,
+				    (b43legacy_phy_read(dev, 0x041B)
+				    & 0xFFE1) | 0x0002);
+	} else {
+		b43legacy_phy_write(dev, 0x041B,
+				    b43legacy_phy_read(dev, 0x041B) & 0xFFE1);
+		b43legacy_phy_write(dev, 0x041F, 0x287A);
+		b43legacy_phy_write(dev, 0x0420,
+				    (b43legacy_phy_read(dev, 0x0420)
+				    & 0xFFF0) | 0x0004);
+	}
+
+	if (phy->rev > 2) {
+		b43legacy_phy_write(dev, 0x0422, 0x287A);
+		b43legacy_phy_write(dev, 0x0420,
+				    (b43legacy_phy_read(dev, 0x0420)
+				    & 0x0FFF) | 0x3000);
+	}
+
+	b43legacy_phy_write(dev, 0x04A8, (b43legacy_phy_read(dev, 0x04A8)
+			    & 0x8080) | 0x7874);
+	b43legacy_phy_write(dev, 0x048E, 0x1C00);
+
+	if (phy->rev == 1) {
+		b43legacy_phy_write(dev, 0x04AB,
+				    (b43legacy_phy_read(dev, 0x04AB)
+				    & 0xF0FF) | 0x0600);
+		b43legacy_phy_write(dev, 0x048B, 0x005E);
+		b43legacy_phy_write(dev, 0x048C,
+				    (b43legacy_phy_read(dev, 0x048C) & 0xFF00)
+				    | 0x001E);
+		b43legacy_phy_write(dev, 0x048D, 0x0002);
+	}
+
+	b43legacy_ilt_write(dev, offset + 0x0800, 0);
+	b43legacy_ilt_write(dev, offset + 0x0801, 7);
+	b43legacy_ilt_write(dev, offset + 0x0802, 16);
+	b43legacy_ilt_write(dev, offset + 0x0803, 28);
+
+	if (phy->rev >= 6) {
+		b43legacy_phy_write(dev, 0x0426,
+				    (b43legacy_phy_read(dev, 0x0426) & 0xFFFC));
+		b43legacy_phy_write(dev, 0x0426,
+				    (b43legacy_phy_read(dev, 0x0426) & 0xEFFF));
+	}
+}
+
+static void b43legacy_phy_setupg(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 i;
+
+	B43legacy_BUG_ON(phy->type != B43legacy_PHYTYPE_G);
+	if (phy->rev == 1) {
+		b43legacy_phy_write(dev, 0x0406, 0x4F19);
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS,
+				    (b43legacy_phy_read(dev,
+				    B43legacy_PHY_G_CRS) & 0xFC3F) | 0x0340);
+		b43legacy_phy_write(dev, 0x042C, 0x005A);
+		b43legacy_phy_write(dev, 0x0427, 0x001A);
+
+		for (i = 0; i < B43legacy_ILT_FINEFREQG_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x5800 + i,
+					    b43legacy_ilt_finefreqg[i]);
+		for (i = 0; i < B43legacy_ILT_NOISEG1_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x1800 + i,
+					    b43legacy_ilt_noiseg1[i]);
+		for (i = 0; i < B43legacy_ILT_ROTOR_SIZE; i++)
+			b43legacy_ilt_write32(dev, 0x2000 + i,
+					      b43legacy_ilt_rotor[i]);
+	} else {
+		/* nrssi values are signed 6-bit values. Why 0x7654 here? */
+		b43legacy_nrssi_hw_write(dev, 0xBA98, (s16)0x7654);
+
+		if (phy->rev == 2) {
+			b43legacy_phy_write(dev, 0x04C0, 0x1861);
+			b43legacy_phy_write(dev, 0x04C1, 0x0271);
+		} else if (phy->rev > 2) {
+			b43legacy_phy_write(dev, 0x04C0, 0x0098);
+			b43legacy_phy_write(dev, 0x04C1, 0x0070);
+			b43legacy_phy_write(dev, 0x04C9, 0x0080);
+		}
+		b43legacy_phy_write(dev, 0x042B, b43legacy_phy_read(dev,
+				    0x042B) | 0x800);
+
+		for (i = 0; i < 64; i++)
+			b43legacy_ilt_write(dev, 0x4000 + i, i);
+		for (i = 0; i < B43legacy_ILT_NOISEG2_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x1800 + i,
+					    b43legacy_ilt_noiseg2[i]);
+	}
+
+	if (phy->rev <= 2)
+		for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x1400 + i,
+					    b43legacy_ilt_noisescaleg1[i]);
+	else if ((phy->rev >= 7) && (b43legacy_phy_read(dev, 0x0449) & 0x0200))
+		for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x1400 + i,
+					    b43legacy_ilt_noisescaleg3[i]);
+	else
+		for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x1400 + i,
+					    b43legacy_ilt_noisescaleg2[i]);
+
+	if (phy->rev == 2)
+		for (i = 0; i < B43legacy_ILT_SIGMASQR_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x5000 + i,
+					    b43legacy_ilt_sigmasqr1[i]);
+	else if ((phy->rev > 2) && (phy->rev <= 8))
+		for (i = 0; i < B43legacy_ILT_SIGMASQR_SIZE; i++)
+			b43legacy_ilt_write(dev, 0x5000 + i,
+					    b43legacy_ilt_sigmasqr2[i]);
+
+	if (phy->rev == 1) {
+		for (i = 0; i < B43legacy_ILT_RETARD_SIZE; i++)
+			b43legacy_ilt_write32(dev, 0x2400 + i,
+					      b43legacy_ilt_retard[i]);
+		for (i = 4; i < 20; i++)
+			b43legacy_ilt_write(dev, 0x5400 + i, 0x0020);
+		b43legacy_phy_agcsetup(dev);
+
+		if (is_bcm_board_vendor(dev) &&
+		    (dev->dev->bus->boardinfo.type == 0x0416) &&
+		    (dev->dev->bus->sprom.board_rev == 0x0017))
+			return;
+
+		b43legacy_ilt_write(dev, 0x5001, 0x0002);
+		b43legacy_ilt_write(dev, 0x5002, 0x0001);
+	} else {
+		for (i = 0; i <= 0x20; i++)
+			b43legacy_ilt_write(dev, 0x1000 + i, 0x0820);
+		b43legacy_phy_agcsetup(dev);
+		b43legacy_phy_read(dev, 0x0400); /* dummy read */
+		b43legacy_phy_write(dev, 0x0403, 0x1000);
+		b43legacy_ilt_write(dev, 0x3C02, 0x000F);
+		b43legacy_ilt_write(dev, 0x3C03, 0x0014);
+
+		if (is_bcm_board_vendor(dev) &&
+		    (dev->dev->bus->boardinfo.type == 0x0416) &&
+		    (dev->dev->bus->sprom.board_rev == 0x0017))
+			return;
+
+		b43legacy_ilt_write(dev, 0x0401, 0x0002);
+		b43legacy_ilt_write(dev, 0x0402, 0x0001);
+	}
+}
+
+/* Initialize the APHY portion of a GPHY. */
+static void b43legacy_phy_inita(struct b43legacy_wldev *dev)
+{
+
+	might_sleep();
+
+	b43legacy_phy_setupg(dev);
+	if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL)
+		b43legacy_phy_write(dev, 0x046E, 0x03CF);
+}
+
+static void b43legacy_phy_initb2(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 offset;
+	int val;
+
+	b43legacy_write16(dev, 0x03EC, 0x3F22);
+	b43legacy_phy_write(dev, 0x0020, 0x301C);
+	b43legacy_phy_write(dev, 0x0026, 0x0000);
+	b43legacy_phy_write(dev, 0x0030, 0x00C6);
+	b43legacy_phy_write(dev, 0x0088, 0x3E00);
+	val = 0x3C3D;
+	for (offset = 0x0089; offset < 0x00A7; offset++) {
+		b43legacy_phy_write(dev, offset, val);
+		val -= 0x0202;
+	}
+	b43legacy_phy_write(dev, 0x03E4, 0x3000);
+	b43legacy_radio_selectchannel(dev, phy->channel, 0);
+	if (phy->radio_ver != 0x2050) {
+		b43legacy_radio_write16(dev, 0x0075, 0x0080);
+		b43legacy_radio_write16(dev, 0x0079, 0x0081);
+	}
+	b43legacy_radio_write16(dev, 0x0050, 0x0020);
+	b43legacy_radio_write16(dev, 0x0050, 0x0023);
+	if (phy->radio_ver == 0x2050) {
+		b43legacy_radio_write16(dev, 0x0050, 0x0020);
+		b43legacy_radio_write16(dev, 0x005A, 0x0070);
+		b43legacy_radio_write16(dev, 0x005B, 0x007B);
+		b43legacy_radio_write16(dev, 0x005C, 0x00B0);
+		b43legacy_radio_write16(dev, 0x007A, 0x000F);
+		b43legacy_phy_write(dev, 0x0038, 0x0677);
+		b43legacy_radio_init2050(dev);
+	}
+	b43legacy_phy_write(dev, 0x0014, 0x0080);
+	b43legacy_phy_write(dev, 0x0032, 0x00CA);
+	b43legacy_phy_write(dev, 0x0032, 0x00CC);
+	b43legacy_phy_write(dev, 0x0035, 0x07C2);
+	b43legacy_phy_lo_b_measure(dev);
+	b43legacy_phy_write(dev, 0x0026, 0xCC00);
+	if (phy->radio_ver != 0x2050)
+		b43legacy_phy_write(dev, 0x0026, 0xCE00);
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x1000);
+	b43legacy_phy_write(dev, 0x002A, 0x88A3);
+	if (phy->radio_ver != 0x2050)
+		b43legacy_phy_write(dev, 0x002A, 0x88C2);
+	b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF);
+	b43legacy_phy_init_pctl(dev);
+}
+
+static void b43legacy_phy_initb4(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 offset;
+	u16 val;
+
+	b43legacy_write16(dev, 0x03EC, 0x3F22);
+	b43legacy_phy_write(dev, 0x0020, 0x301C);
+	b43legacy_phy_write(dev, 0x0026, 0x0000);
+	b43legacy_phy_write(dev, 0x0030, 0x00C6);
+	b43legacy_phy_write(dev, 0x0088, 0x3E00);
+	val = 0x3C3D;
+	for (offset = 0x0089; offset < 0x00A7; offset++) {
+		b43legacy_phy_write(dev, offset, val);
+		val -= 0x0202;
+	}
+	b43legacy_phy_write(dev, 0x03E4, 0x3000);
+	b43legacy_radio_selectchannel(dev, phy->channel, 0);
+	if (phy->radio_ver != 0x2050) {
+		b43legacy_radio_write16(dev, 0x0075, 0x0080);
+		b43legacy_radio_write16(dev, 0x0079, 0x0081);
+	}
+	b43legacy_radio_write16(dev, 0x0050, 0x0020);
+	b43legacy_radio_write16(dev, 0x0050, 0x0023);
+	if (phy->radio_ver == 0x2050) {
+		b43legacy_radio_write16(dev, 0x0050, 0x0020);
+		b43legacy_radio_write16(dev, 0x005A, 0x0070);
+		b43legacy_radio_write16(dev, 0x005B, 0x007B);
+		b43legacy_radio_write16(dev, 0x005C, 0x00B0);
+		b43legacy_radio_write16(dev, 0x007A, 0x000F);
+		b43legacy_phy_write(dev, 0x0038, 0x0677);
+		b43legacy_radio_init2050(dev);
+	}
+	b43legacy_phy_write(dev, 0x0014, 0x0080);
+	b43legacy_phy_write(dev, 0x0032, 0x00CA);
+	if (phy->radio_ver == 0x2050)
+		b43legacy_phy_write(dev, 0x0032, 0x00E0);
+	b43legacy_phy_write(dev, 0x0035, 0x07C2);
+
+	b43legacy_phy_lo_b_measure(dev);
+
+	b43legacy_phy_write(dev, 0x0026, 0xCC00);
+	if (phy->radio_ver == 0x2050)
+		b43legacy_phy_write(dev, 0x0026, 0xCE00);
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x1100);
+	b43legacy_phy_write(dev, 0x002A, 0x88A3);
+	if (phy->radio_ver == 0x2050)
+		b43legacy_phy_write(dev, 0x002A, 0x88C2);
+	b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF);
+	if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
+		b43legacy_calc_nrssi_slope(dev);
+		b43legacy_calc_nrssi_threshold(dev);
+	}
+	b43legacy_phy_init_pctl(dev);
+}
+
+static void b43legacy_phy_initb5(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 offset;
+	u16 value;
+	u8 old_channel;
+
+	if (phy->analog == 1)
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x0050);
+	if (!is_bcm_board_vendor(dev) &&
+	    (dev->dev->bus->boardinfo.type != 0x0416)) {
+		value = 0x2120;
+		for (offset = 0x00A8 ; offset < 0x00C7; offset++) {
+			b43legacy_phy_write(dev, offset, value);
+			value += 0x0202;
+		}
+	}
+	b43legacy_phy_write(dev, 0x0035,
+			    (b43legacy_phy_read(dev, 0x0035) & 0xF0FF)
+			    | 0x0700);
+	if (phy->radio_ver == 0x2050)
+		b43legacy_phy_write(dev, 0x0038, 0x0667);
+
+	if (phy->gmode) {
+		if (phy->radio_ver == 0x2050) {
+			b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A)
+					| 0x0020);
+			b43legacy_radio_write16(dev, 0x0051,
+					b43legacy_radio_read16(dev, 0x0051)
+					| 0x0004);
+		}
+		b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, 0x0000);
+
+		b43legacy_phy_write(dev, 0x0802, b43legacy_phy_read(dev, 0x0802)
+				    | 0x0100);
+		b43legacy_phy_write(dev, 0x042B, b43legacy_phy_read(dev, 0x042B)
+				    | 0x2000);
+
+		b43legacy_phy_write(dev, 0x001C, 0x186A);
+
+		b43legacy_phy_write(dev, 0x0013, (b43legacy_phy_read(dev,
+				    0x0013) & 0x00FF) | 0x1900);
+		b43legacy_phy_write(dev, 0x0035, (b43legacy_phy_read(dev,
+				    0x0035) & 0xFFC0) | 0x0064);
+		b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev,
+				    0x005D) & 0xFF80) | 0x000A);
+		b43legacy_phy_write(dev, 0x5B, 0x0000);
+		b43legacy_phy_write(dev, 0x5C, 0x0000);
+	}
+
+	if (dev->bad_frames_preempt)
+		b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD,
+				    b43legacy_phy_read(dev,
+				    B43legacy_PHY_RADIO_BITFIELD) | (1 << 12));
+
+	if (phy->analog == 1) {
+		b43legacy_phy_write(dev, 0x0026, 0xCE00);
+		b43legacy_phy_write(dev, 0x0021, 0x3763);
+		b43legacy_phy_write(dev, 0x0022, 0x1BC3);
+		b43legacy_phy_write(dev, 0x0023, 0x06F9);
+		b43legacy_phy_write(dev, 0x0024, 0x037E);
+	} else
+		b43legacy_phy_write(dev, 0x0026, 0xCC00);
+	b43legacy_phy_write(dev, 0x0030, 0x00C6);
+	b43legacy_write16(dev, 0x03EC, 0x3F22);
+
+	if (phy->analog == 1)
+		b43legacy_phy_write(dev, 0x0020, 0x3E1C);
+	else
+		b43legacy_phy_write(dev, 0x0020, 0x301C);
+
+	if (phy->analog == 0)
+		b43legacy_write16(dev, 0x03E4, 0x3000);
+
+	old_channel = (phy->channel == 0xFF) ? 1 : phy->channel;
+	/* Force to channel 7, even if not supported. */
+	b43legacy_radio_selectchannel(dev, 7, 0);
+
+	if (phy->radio_ver != 0x2050) {
+		b43legacy_radio_write16(dev, 0x0075, 0x0080);
+		b43legacy_radio_write16(dev, 0x0079, 0x0081);
+	}
+
+	b43legacy_radio_write16(dev, 0x0050, 0x0020);
+	b43legacy_radio_write16(dev, 0x0050, 0x0023);
+
+	if (phy->radio_ver == 0x2050) {
+		b43legacy_radio_write16(dev, 0x0050, 0x0020);
+		b43legacy_radio_write16(dev, 0x005A, 0x0070);
+	}
+
+	b43legacy_radio_write16(dev, 0x005B, 0x007B);
+	b43legacy_radio_write16(dev, 0x005C, 0x00B0);
+
+	b43legacy_radio_write16(dev, 0x007A, b43legacy_radio_read16(dev,
+				0x007A) | 0x0007);
+
+	b43legacy_radio_selectchannel(dev, old_channel, 0);
+
+	b43legacy_phy_write(dev, 0x0014, 0x0080);
+	b43legacy_phy_write(dev, 0x0032, 0x00CA);
+	b43legacy_phy_write(dev, 0x002A, 0x88A3);
+
+	b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF);
+
+	if (phy->radio_ver == 0x2050)
+		b43legacy_radio_write16(dev, 0x005D, 0x000D);
+
+	b43legacy_write16(dev, 0x03E4, (b43legacy_read16(dev, 0x03E4) &
+			  0xFFC0) | 0x0004);
+}
+
+static void b43legacy_phy_initb6(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 offset;
+	u16 val;
+	u8 old_channel;
+
+	b43legacy_phy_write(dev, 0x003E, 0x817A);
+	b43legacy_radio_write16(dev, 0x007A,
+				(b43legacy_radio_read16(dev, 0x007A) | 0x0058));
+	if (phy->radio_rev == 4 ||
+	     phy->radio_rev == 5) {
+		b43legacy_radio_write16(dev, 0x0051, 0x0037);
+		b43legacy_radio_write16(dev, 0x0052, 0x0070);
+		b43legacy_radio_write16(dev, 0x0053, 0x00B3);
+		b43legacy_radio_write16(dev, 0x0054, 0x009B);
+		b43legacy_radio_write16(dev, 0x005A, 0x0088);
+		b43legacy_radio_write16(dev, 0x005B, 0x0088);
+		b43legacy_radio_write16(dev, 0x005D, 0x0088);
+		b43legacy_radio_write16(dev, 0x005E, 0x0088);
+		b43legacy_radio_write16(dev, 0x007D, 0x0088);
+		b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+				      B43legacy_UCODEFLAGS_OFFSET,
+				      (b43legacy_shm_read32(dev,
+				      B43legacy_SHM_SHARED,
+				      B43legacy_UCODEFLAGS_OFFSET)
+				      | 0x00000200));
+	}
+	if (phy->radio_rev == 8) {
+		b43legacy_radio_write16(dev, 0x0051, 0x0000);
+		b43legacy_radio_write16(dev, 0x0052, 0x0040);
+		b43legacy_radio_write16(dev, 0x0053, 0x00B7);
+		b43legacy_radio_write16(dev, 0x0054, 0x0098);
+		b43legacy_radio_write16(dev, 0x005A, 0x0088);
+		b43legacy_radio_write16(dev, 0x005B, 0x006B);
+		b43legacy_radio_write16(dev, 0x005C, 0x000F);
+		if (dev->dev->bus->sprom.boardflags_lo & 0x8000) {
+			b43legacy_radio_write16(dev, 0x005D, 0x00FA);
+			b43legacy_radio_write16(dev, 0x005E, 0x00D8);
+		} else {
+			b43legacy_radio_write16(dev, 0x005D, 0x00F5);
+			b43legacy_radio_write16(dev, 0x005E, 0x00B8);
+		}
+		b43legacy_radio_write16(dev, 0x0073, 0x0003);
+		b43legacy_radio_write16(dev, 0x007D, 0x00A8);
+		b43legacy_radio_write16(dev, 0x007C, 0x0001);
+		b43legacy_radio_write16(dev, 0x007E, 0x0008);
+	}
+	val = 0x1E1F;
+	for (offset = 0x0088; offset < 0x0098; offset++) {
+		b43legacy_phy_write(dev, offset, val);
+		val -= 0x0202;
+	}
+	val = 0x3E3F;
+	for (offset = 0x0098; offset < 0x00A8; offset++) {
+		b43legacy_phy_write(dev, offset, val);
+		val -= 0x0202;
+	}
+	val = 0x2120;
+	for (offset = 0x00A8; offset < 0x00C8; offset++) {
+		b43legacy_phy_write(dev, offset, (val & 0x3F3F));
+		val += 0x0202;
+	}
+	if (phy->type == B43legacy_PHYTYPE_G) {
+		b43legacy_radio_write16(dev, 0x007A,
+					b43legacy_radio_read16(dev, 0x007A) |
+					0x0020);
+		b43legacy_radio_write16(dev, 0x0051,
+					b43legacy_radio_read16(dev, 0x0051) |
+					0x0004);
+		b43legacy_phy_write(dev, 0x0802,
+				    b43legacy_phy_read(dev, 0x0802) | 0x0100);
+		b43legacy_phy_write(dev, 0x042B,
+				    b43legacy_phy_read(dev, 0x042B) | 0x2000);
+		b43legacy_phy_write(dev, 0x5B, 0x0000);
+		b43legacy_phy_write(dev, 0x5C, 0x0000);
+	}
+
+	old_channel = phy->channel;
+	if (old_channel >= 8)
+		b43legacy_radio_selectchannel(dev, 1, 0);
+	else
+		b43legacy_radio_selectchannel(dev, 13, 0);
+
+	b43legacy_radio_write16(dev, 0x0050, 0x0020);
+	b43legacy_radio_write16(dev, 0x0050, 0x0023);
+	udelay(40);
+	if (phy->radio_rev < 6 || phy->radio_rev == 8) {
+		b43legacy_radio_write16(dev, 0x007C,
+					(b43legacy_radio_read16(dev, 0x007C)
+					| 0x0002));
+		b43legacy_radio_write16(dev, 0x0050, 0x0020);
+	}
+	if (phy->radio_rev <= 2) {
+		b43legacy_radio_write16(dev, 0x0050, 0x0020);
+		b43legacy_radio_write16(dev, 0x005A, 0x0070);
+		b43legacy_radio_write16(dev, 0x005B, 0x007B);
+		b43legacy_radio_write16(dev, 0x005C, 0x00B0);
+	}
+	b43legacy_radio_write16(dev, 0x007A,
+				(b43legacy_radio_read16(dev,
+				0x007A) & 0x00F8) | 0x0007);
+
+	b43legacy_radio_selectchannel(dev, old_channel, 0);
+
+	b43legacy_phy_write(dev, 0x0014, 0x0200);
+	if (phy->radio_rev >= 6)
+		b43legacy_phy_write(dev, 0x002A, 0x88C2);
+	else
+		b43legacy_phy_write(dev, 0x002A, 0x8AC0);
+	b43legacy_phy_write(dev, 0x0038, 0x0668);
+	b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF);
+	if (phy->radio_rev == 4 || phy->radio_rev == 5)
+		b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev,
+				    0x005D) & 0xFF80) | 0x0003);
+	if (phy->radio_rev <= 2)
+		b43legacy_radio_write16(dev, 0x005D, 0x000D);
+
+	if (phy->analog == 4) {
+		b43legacy_write16(dev, 0x03E4, 0x0009);
+		b43legacy_phy_write(dev, 0x61, b43legacy_phy_read(dev, 0x61)
+				    & 0xFFF);
+	} else
+		b43legacy_phy_write(dev, 0x0002, (b43legacy_phy_read(dev,
+				    0x0002) & 0xFFC0) | 0x0004);
+	if (phy->type == B43legacy_PHYTYPE_G)
+		b43legacy_write16(dev, 0x03E6, 0x0);
+	if (phy->type == B43legacy_PHYTYPE_B) {
+		b43legacy_write16(dev, 0x03E6, 0x8140);
+		b43legacy_phy_write(dev, 0x0016, 0x0410);
+		b43legacy_phy_write(dev, 0x0017, 0x0820);
+		b43legacy_phy_write(dev, 0x0062, 0x0007);
+		b43legacy_radio_init2050(dev);
+		b43legacy_phy_lo_g_measure(dev);
+		if (dev->dev->bus->sprom.boardflags_lo &
+		    B43legacy_BFL_RSSI) {
+			b43legacy_calc_nrssi_slope(dev);
+			b43legacy_calc_nrssi_threshold(dev);
+		}
+		b43legacy_phy_init_pctl(dev);
+	}
+}
+
+static void b43legacy_calc_loopback_gain(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 backup_phy[15] = {0};
+	u16 backup_radio[3];
+	u16 backup_bband;
+	u16 i;
+	u16 loop1_cnt;
+	u16 loop1_done;
+	u16 loop1_omitted;
+	u16 loop2_done;
+
+	backup_phy[0] = b43legacy_phy_read(dev, 0x0429);
+	backup_phy[1] = b43legacy_phy_read(dev, 0x0001);
+	backup_phy[2] = b43legacy_phy_read(dev, 0x0811);
+	backup_phy[3] = b43legacy_phy_read(dev, 0x0812);
+	if (phy->rev != 1) {
+		backup_phy[4] = b43legacy_phy_read(dev, 0x0814);
+		backup_phy[5] = b43legacy_phy_read(dev, 0x0815);
+	}
+	backup_phy[6] = b43legacy_phy_read(dev, 0x005A);
+	backup_phy[7] = b43legacy_phy_read(dev, 0x0059);
+	backup_phy[8] = b43legacy_phy_read(dev, 0x0058);
+	backup_phy[9] = b43legacy_phy_read(dev, 0x000A);
+	backup_phy[10] = b43legacy_phy_read(dev, 0x0003);
+	backup_phy[11] = b43legacy_phy_read(dev, 0x080F);
+	backup_phy[12] = b43legacy_phy_read(dev, 0x0810);
+	backup_phy[13] = b43legacy_phy_read(dev, 0x002B);
+	backup_phy[14] = b43legacy_phy_read(dev, 0x0015);
+	b43legacy_phy_read(dev, 0x002D); /* dummy read */
+	backup_bband = phy->bbatt;
+	backup_radio[0] = b43legacy_radio_read16(dev, 0x0052);
+	backup_radio[1] = b43legacy_radio_read16(dev, 0x0043);
+	backup_radio[2] = b43legacy_radio_read16(dev, 0x007A);
+
+	b43legacy_phy_write(dev, 0x0429,
+			    b43legacy_phy_read(dev, 0x0429) & 0x3FFF);
+	b43legacy_phy_write(dev, 0x0001,
+			    b43legacy_phy_read(dev, 0x0001) & 0x8000);
+	b43legacy_phy_write(dev, 0x0811,
+			    b43legacy_phy_read(dev, 0x0811) | 0x0002);
+	b43legacy_phy_write(dev, 0x0812,
+			    b43legacy_phy_read(dev, 0x0812) & 0xFFFD);
+	b43legacy_phy_write(dev, 0x0811,
+			    b43legacy_phy_read(dev, 0x0811) | 0x0001);
+	b43legacy_phy_write(dev, 0x0812,
+			    b43legacy_phy_read(dev, 0x0812) & 0xFFFE);
+	if (phy->rev != 1) {
+		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, 0x0814,
+				    b43legacy_phy_read(dev, 0x0814) | 0x0002);
+		b43legacy_phy_write(dev, 0x0815,
+				    b43legacy_phy_read(dev, 0x0815) & 0xFFFD);
+	}
+	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)
+			    & 0xFFCF) | 0x0030);
+	b43legacy_phy_write(dev, 0x0812, (b43legacy_phy_read(dev, 0x0812)
+			    & 0xFFCF) | 0x0010);
+
+	b43legacy_phy_write(dev, 0x005A, 0x0780);
+	b43legacy_phy_write(dev, 0x0059, 0xC810);
+	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);
+	if (phy->rev != 1) {
+		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);
+	if (phy->radio_ver == 0x2050 && phy->radio_rev == 2) {
+		b43legacy_radio_write16(dev, 0x0052, 0x0000);
+		b43legacy_radio_write16(dev, 0x0043,
+					(b43legacy_radio_read16(dev, 0x0043)
+					 & 0xFFF0) | 0x0009);
+		loop1_cnt = 9;
+	} else if (phy->radio_rev == 8) {
+		b43legacy_radio_write16(dev, 0x0043, 0x000F);
+		loop1_cnt = 15;
+	} else
+		loop1_cnt = 0;
+
+	b43legacy_phy_set_baseband_attenuation(dev, 11);
+
+	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, 0x002B,
+			    (b43legacy_phy_read(dev, 0x002B)
+			     & 0xFFC0) | 0x0001);
+	b43legacy_phy_write(dev, 0x002B,
+			    (b43legacy_phy_read(dev, 0x002B)
+			     & 0xC0FF) | 0x0800);
+	b43legacy_phy_write(dev, 0x0811,
+			    b43legacy_phy_read(dev, 0x0811) | 0x0100);
+	b43legacy_phy_write(dev, 0x0812,
+			    b43legacy_phy_read(dev, 0x0812) & 0xCFFF);
+	if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_EXTLNA) {
+		if (phy->rev >= 7) {
+			b43legacy_phy_write(dev, 0x0811,
+					    b43legacy_phy_read(dev, 0x0811)
+					    | 0x0800);
+			b43legacy_phy_write(dev, 0x0812,
+					    b43legacy_phy_read(dev, 0x0812)
+					    | 0x8000);
+		}
+	}
+	b43legacy_radio_write16(dev, 0x007A,
+				b43legacy_radio_read16(dev, 0x007A)
+				& 0x00F7);
+
+	for (i = 0; i < loop1_cnt; i++) {
+		b43legacy_radio_write16(dev, 0x0043, loop1_cnt);
+		b43legacy_phy_write(dev, 0x0812,
+				    (b43legacy_phy_read(dev, 0x0812)
+				     & 0xF0FF) | (i << 8));
+		b43legacy_phy_write(dev, 0x0015,
+				    (b43legacy_phy_read(dev, 0x0015)
+				     & 0x0FFF) | 0xA000);
+		b43legacy_phy_write(dev, 0x0015,
+				    (b43legacy_phy_read(dev, 0x0015)
+				     & 0x0FFF) | 0xF000);
+		udelay(20);
+		if (b43legacy_phy_read(dev, 0x002D) >= 0x0DFC)
+			break;
+	}
+	loop1_done = i;
+	loop1_omitted = loop1_cnt - loop1_done;
+
+	loop2_done = 0;
+	if (loop1_done >= 8) {
+		b43legacy_phy_write(dev, 0x0812,
+				    b43legacy_phy_read(dev, 0x0812)
+				    | 0x0030);
+		for (i = loop1_done - 8; i < 16; i++) {
+			b43legacy_phy_write(dev, 0x0812,
+					    (b43legacy_phy_read(dev, 0x0812)
+					     & 0xF0FF) | (i << 8));
+			b43legacy_phy_write(dev, 0x0015,
+					    (b43legacy_phy_read(dev, 0x0015)
+					     & 0x0FFF) | 0xA000);
+			b43legacy_phy_write(dev, 0x0015,
+					    (b43legacy_phy_read(dev, 0x0015)
+					     & 0x0FFF) | 0xF000);
+			udelay(20);
+			if (b43legacy_phy_read(dev, 0x002D) >= 0x0DFC)
+				break;
+		}
+	}
+
+	if (phy->rev != 1) {
+		b43legacy_phy_write(dev, 0x0814, backup_phy[4]);
+		b43legacy_phy_write(dev, 0x0815, backup_phy[5]);
+	}
+	b43legacy_phy_write(dev, 0x005A, backup_phy[6]);
+	b43legacy_phy_write(dev, 0x0059, backup_phy[7]);
+	b43legacy_phy_write(dev, 0x0058, backup_phy[8]);
+	b43legacy_phy_write(dev, 0x000A, backup_phy[9]);
+	b43legacy_phy_write(dev, 0x0003, backup_phy[10]);
+	b43legacy_phy_write(dev, 0x080F, backup_phy[11]);
+	b43legacy_phy_write(dev, 0x0810, backup_phy[12]);
+	b43legacy_phy_write(dev, 0x002B, backup_phy[13]);
+	b43legacy_phy_write(dev, 0x0015, backup_phy[14]);
+
+	b43legacy_phy_set_baseband_attenuation(dev, backup_bband);
+
+	b43legacy_radio_write16(dev, 0x0052, backup_radio[0]);
+	b43legacy_radio_write16(dev, 0x0043, backup_radio[1]);
+	b43legacy_radio_write16(dev, 0x007A, backup_radio[2]);
+
+	b43legacy_phy_write(dev, 0x0811, backup_phy[2] | 0x0003);
+	udelay(10);
+	b43legacy_phy_write(dev, 0x0811, backup_phy[2]);
+	b43legacy_phy_write(dev, 0x0812, backup_phy[3]);
+	b43legacy_phy_write(dev, 0x0429, backup_phy[0]);
+	b43legacy_phy_write(dev, 0x0001, backup_phy[1]);
+
+	phy->loopback_gain[0] = ((loop1_done * 6) - (loop1_omitted * 4)) - 11;
+	phy->loopback_gain[1] = (24 - (3 * loop2_done)) * 2;
+}
+
+static void b43legacy_phy_initg(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 tmp;
+
+	if (phy->rev == 1)
+		b43legacy_phy_initb5(dev);
+	else
+		b43legacy_phy_initb6(dev);
+	if (phy->rev >= 2 && phy->gmode)
+		b43legacy_phy_inita(dev);
+
+	if (phy->rev >= 2) {
+		b43legacy_phy_write(dev, 0x0814, 0x0000);
+		b43legacy_phy_write(dev, 0x0815, 0x0000);
+	}
+	if (phy->rev == 2) {
+		b43legacy_phy_write(dev, 0x0811, 0x0000);
+		b43legacy_phy_write(dev, 0x0015, 0x00C0);
+	}
+	if (phy->rev > 5) {
+		b43legacy_phy_write(dev, 0x0811, 0x0400);
+		b43legacy_phy_write(dev, 0x0015, 0x00C0);
+	}
+	if (phy->gmode) {
+		tmp = b43legacy_phy_read(dev, 0x0400) & 0xFF;
+		if (tmp == 3) {
+			b43legacy_phy_write(dev, 0x04C2, 0x1816);
+			b43legacy_phy_write(dev, 0x04C3, 0x8606);
+		}
+		if (tmp == 4 || tmp == 5) {
+			b43legacy_phy_write(dev, 0x04C2, 0x1816);
+			b43legacy_phy_write(dev, 0x04C3, 0x8006);
+			b43legacy_phy_write(dev, 0x04CC,
+					    (b43legacy_phy_read(dev,
+					     0x04CC) & 0x00FF) |
+					     0x1F00);
+		}
+		if (phy->rev >= 2)
+			b43legacy_phy_write(dev, 0x047E, 0x0078);
+	}
+	if (phy->radio_rev == 8) {
+		b43legacy_phy_write(dev, 0x0801, b43legacy_phy_read(dev, 0x0801)
+				    | 0x0080);
+		b43legacy_phy_write(dev, 0x043E, b43legacy_phy_read(dev, 0x043E)
+				    | 0x0004);
+	}
+	if (phy->rev >= 2 && phy->gmode)
+		b43legacy_calc_loopback_gain(dev);
+	if (phy->radio_rev != 8) {
+		if (phy->initval == 0xFFFF)
+			phy->initval = b43legacy_radio_init2050(dev);
+		else
+			b43legacy_radio_write16(dev, 0x0078, phy->initval);
+	}
+	if (phy->txctl2 == 0xFFFF)
+		b43legacy_phy_lo_g_measure(dev);
+	else {
+		if (phy->radio_ver == 0x2050 && phy->radio_rev == 8)
+			b43legacy_radio_write16(dev, 0x0052,
+						(phy->txctl1 << 4) |
+						phy->txctl2);
+		else
+			b43legacy_radio_write16(dev, 0x0052,
+						(b43legacy_radio_read16(dev,
+						 0x0052) & 0xFFF0) |
+						 phy->txctl1);
+		if (phy->rev >= 6)
+			b43legacy_phy_write(dev, 0x0036,
+					    (b43legacy_phy_read(dev, 0x0036)
+					     & 0x0FFF) | (phy->txctl2 << 12));
+		if (dev->dev->bus->sprom.boardflags_lo &
+		    B43legacy_BFL_PACTRL)
+			b43legacy_phy_write(dev, 0x002E, 0x8075);
+		else
+			b43legacy_phy_write(dev, 0x002E, 0x807F);
+		if (phy->rev < 2)
+			b43legacy_phy_write(dev, 0x002F, 0x0101);
+		else
+			b43legacy_phy_write(dev, 0x002F, 0x0202);
+	}
+	if (phy->gmode) {
+		b43legacy_phy_lo_adjust(dev, 0);
+		b43legacy_phy_write(dev, 0x080F, 0x8078);
+	}
+
+	if (!(dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI)) {
+		/* The specs state to update the NRSSI LT with
+		 * the value 0x7FFFFFFF here. I think that is some weird
+		 * compiler optimization in the original driver.
+		 * Essentially, what we do here is resetting all NRSSI LT
+		 * entries to -32 (see the clamp_val() in nrssi_hw_update())
+		 */
+		b43legacy_nrssi_hw_update(dev, 0xFFFF);
+		b43legacy_calc_nrssi_threshold(dev);
+	} else if (phy->gmode || phy->rev >= 2) {
+		if (phy->nrssi[0] == -1000) {
+			B43legacy_WARN_ON(phy->nrssi[1] != -1000);
+			b43legacy_calc_nrssi_slope(dev);
+		} else {
+			B43legacy_WARN_ON(phy->nrssi[1] == -1000);
+			b43legacy_calc_nrssi_threshold(dev);
+		}
+	}
+	if (phy->radio_rev == 8)
+		b43legacy_phy_write(dev, 0x0805, 0x3230);
+	b43legacy_phy_init_pctl(dev);
+	if (dev->dev->bus->chip_id == 0x4306
+	    && dev->dev->bus->chip_package == 2) {
+		b43legacy_phy_write(dev, 0x0429,
+				    b43legacy_phy_read(dev, 0x0429) & 0xBFFF);
+		b43legacy_phy_write(dev, 0x04C3,
+				    b43legacy_phy_read(dev, 0x04C3) & 0x7FFF);
+	}
+}
+
+static u16 b43legacy_phy_lo_b_r15_loop(struct b43legacy_wldev *dev)
+{
+	int i;
+	u16 ret = 0;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	for (i = 0; i < 10; i++) {
+		b43legacy_phy_write(dev, 0x0015, 0xAFA0);
+		udelay(1);
+		b43legacy_phy_write(dev, 0x0015, 0xEFA0);
+		udelay(10);
+		b43legacy_phy_write(dev, 0x0015, 0xFFA0);
+		udelay(40);
+		ret += b43legacy_phy_read(dev, 0x002C);
+	}
+	local_irq_restore(flags);
+	cond_resched();
+
+	return ret;
+}
+
+void b43legacy_phy_lo_b_measure(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 regstack[12] = { 0 };
+	u16 mls;
+	s16 fval;
+	int i;
+	int j;
+
+	regstack[0] = b43legacy_phy_read(dev, 0x0015);
+	regstack[1] = b43legacy_radio_read16(dev, 0x0052) & 0xFFF0;
+
+	if (phy->radio_ver == 0x2053) {
+		regstack[2] = b43legacy_phy_read(dev, 0x000A);
+		regstack[3] = b43legacy_phy_read(dev, 0x002A);
+		regstack[4] = b43legacy_phy_read(dev, 0x0035);
+		regstack[5] = b43legacy_phy_read(dev, 0x0003);
+		regstack[6] = b43legacy_phy_read(dev, 0x0001);
+		regstack[7] = b43legacy_phy_read(dev, 0x0030);
+
+		regstack[8] = b43legacy_radio_read16(dev, 0x0043);
+		regstack[9] = b43legacy_radio_read16(dev, 0x007A);
+		regstack[10] = b43legacy_read16(dev, 0x03EC);
+		regstack[11] = b43legacy_radio_read16(dev, 0x0052) & 0x00F0;
+
+		b43legacy_phy_write(dev, 0x0030, 0x00FF);
+		b43legacy_write16(dev, 0x03EC, 0x3F3F);
+		b43legacy_phy_write(dev, 0x0035, regstack[4] & 0xFF7F);
+		b43legacy_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0);
+	}
+	b43legacy_phy_write(dev, 0x0015, 0xB000);
+	b43legacy_phy_write(dev, 0x002B, 0x0004);
+
+	if (phy->radio_ver == 0x2053) {
+		b43legacy_phy_write(dev, 0x002B, 0x0203);
+		b43legacy_phy_write(dev, 0x002A, 0x08A3);
+	}
+
+	phy->minlowsig[0] = 0xFFFF;
+
+	for (i = 0; i < 4; i++) {
+		b43legacy_radio_write16(dev, 0x0052, regstack[1] | i);
+		b43legacy_phy_lo_b_r15_loop(dev);
+	}
+	for (i = 0; i < 10; i++) {
+		b43legacy_radio_write16(dev, 0x0052, regstack[1] | i);
+		mls = b43legacy_phy_lo_b_r15_loop(dev) / 10;
+		if (mls < phy->minlowsig[0]) {
+			phy->minlowsig[0] = mls;
+			phy->minlowsigpos[0] = i;
+		}
+	}
+	b43legacy_radio_write16(dev, 0x0052, regstack[1]
+				| phy->minlowsigpos[0]);
+
+	phy->minlowsig[1] = 0xFFFF;
+
+	for (i = -4; i < 5; i += 2) {
+		for (j = -4; j < 5; j += 2) {
+			if (j < 0)
+				fval = (0x0100 * i) + j + 0x0100;
+			else
+				fval = (0x0100 * i) + j;
+			b43legacy_phy_write(dev, 0x002F, fval);
+			mls = b43legacy_phy_lo_b_r15_loop(dev) / 10;
+			if (mls < phy->minlowsig[1]) {
+				phy->minlowsig[1] = mls;
+				phy->minlowsigpos[1] = fval;
+			}
+		}
+	}
+	phy->minlowsigpos[1] += 0x0101;
+
+	b43legacy_phy_write(dev, 0x002F, phy->minlowsigpos[1]);
+	if (phy->radio_ver == 0x2053) {
+		b43legacy_phy_write(dev, 0x000A, regstack[2]);
+		b43legacy_phy_write(dev, 0x002A, regstack[3]);
+		b43legacy_phy_write(dev, 0x0035, regstack[4]);
+		b43legacy_phy_write(dev, 0x0003, regstack[5]);
+		b43legacy_phy_write(dev, 0x0001, regstack[6]);
+		b43legacy_phy_write(dev, 0x0030, regstack[7]);
+
+		b43legacy_radio_write16(dev, 0x0043, regstack[8]);
+		b43legacy_radio_write16(dev, 0x007A, regstack[9]);
+
+		b43legacy_radio_write16(dev, 0x0052,
+					(b43legacy_radio_read16(dev, 0x0052)
+					& 0x000F) | regstack[11]);
+
+		b43legacy_write16(dev, 0x03EC, regstack[10]);
+	}
+	b43legacy_phy_write(dev, 0x0015, regstack[0]);
+}
+
+static inline
+u16 b43legacy_phy_lo_g_deviation_subval(struct b43legacy_wldev *dev,
+					u16 control)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if (phy->gmode) {
+		b43legacy_phy_write(dev, 0x15, 0xE300);
+		control <<= 8;
+		b43legacy_phy_write(dev, 0x0812, control | 0x00B0);
+		udelay(5);
+		b43legacy_phy_write(dev, 0x0812, control | 0x00B2);
+		udelay(2);
+		b43legacy_phy_write(dev, 0x0812, control | 0x00B3);
+		udelay(4);
+		b43legacy_phy_write(dev, 0x0015, 0xF300);
+		udelay(8);
+	} else {
+		b43legacy_phy_write(dev, 0x0015, control | 0xEFA0);
+		udelay(2);
+		b43legacy_phy_write(dev, 0x0015, control | 0xEFE0);
+		udelay(4);
+		b43legacy_phy_write(dev, 0x0015, control | 0xFFE0);
+		udelay(8);
+	}
+	ret = b43legacy_phy_read(dev, 0x002D);
+	local_irq_restore(flags);
+	cond_resched();
+
+	return ret;
+}
+
+static u32 b43legacy_phy_lo_g_singledeviation(struct b43legacy_wldev *dev,
+					      u16 control)
+{
+	int i;
+	u32 ret = 0;
+
+	for (i = 0; i < 8; i++)
+		ret += b43legacy_phy_lo_g_deviation_subval(dev, control);
+
+	return ret;
+}
+
+/* Write the LocalOscillator CONTROL */
+static inline
+void b43legacy_lo_write(struct b43legacy_wldev *dev,
+			struct b43legacy_lopair *pair)
+{
+	u16 value;
+
+	value = (u8)(pair->low);
+	value |= ((u8)(pair->high)) << 8;
+
+#ifdef CONFIG_B43LEGACY_DEBUG
+	/* Sanity check. */
+	if (pair->low < -8 || pair->low > 8 ||
+	    pair->high < -8 || pair->high > 8) {
+		b43legacydbg(dev->wl,
+		       "WARNING: Writing invalid LOpair "
+		       "(low: %d, high: %d)\n",
+		       pair->low, pair->high);
+		dump_stack();
+	}
+#endif
+
+	b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, value);
+}
+
+static inline
+struct b43legacy_lopair *b43legacy_find_lopair(struct b43legacy_wldev *dev,
+					       u16 bbatt,
+					       u16 rfatt,
+					       u16 tx)
+{
+	static const u8 dict[10] = { 11, 10, 11, 12, 13, 12, 13, 12, 13, 12 };
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (bbatt > 6)
+		bbatt = 6;
+	B43legacy_WARN_ON(rfatt >= 10);
+
+	if (tx == 3)
+		return b43legacy_get_lopair(phy, rfatt, bbatt);
+	return b43legacy_get_lopair(phy, dict[rfatt], bbatt);
+}
+
+static inline
+struct b43legacy_lopair *b43legacy_current_lopair(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	return b43legacy_find_lopair(dev, phy->bbatt,
+				     phy->rfatt, phy->txctl1);
+}
+
+/* Adjust B/G LO */
+void b43legacy_phy_lo_adjust(struct b43legacy_wldev *dev, int fixed)
+{
+	struct b43legacy_lopair *pair;
+
+	if (fixed) {
+		/* Use fixed values. Only for initialization. */
+		pair = b43legacy_find_lopair(dev, 2, 3, 0);
+	} else
+		pair = b43legacy_current_lopair(dev);
+	b43legacy_lo_write(dev, pair);
+}
+
+static void b43legacy_phy_lo_g_measure_txctl2(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 txctl2 = 0;
+	u16 i;
+	u32 smallest;
+	u32 tmp;
+
+	b43legacy_radio_write16(dev, 0x0052, 0x0000);
+	udelay(10);
+	smallest = b43legacy_phy_lo_g_singledeviation(dev, 0);
+	for (i = 0; i < 16; i++) {
+		b43legacy_radio_write16(dev, 0x0052, i);
+		udelay(10);
+		tmp = b43legacy_phy_lo_g_singledeviation(dev, 0);
+		if (tmp < smallest) {
+			smallest = tmp;
+			txctl2 = i;
+		}
+	}
+	phy->txctl2 = txctl2;
+}
+
+static
+void b43legacy_phy_lo_g_state(struct b43legacy_wldev *dev,
+			      const struct b43legacy_lopair *in_pair,
+			      struct b43legacy_lopair *out_pair,
+			      u16 r27)
+{
+	static const struct b43legacy_lopair transitions[8] = {
+		{ .high =  1,  .low =  1, },
+		{ .high =  1,  .low =  0, },
+		{ .high =  1,  .low = -1, },
+		{ .high =  0,  .low = -1, },
+		{ .high = -1,  .low = -1, },
+		{ .high = -1,  .low =  0, },
+		{ .high = -1,  .low =  1, },
+		{ .high =  0,  .low =  1, },
+	};
+	struct b43legacy_lopair lowest_transition = {
+		.high = in_pair->high,
+		.low = in_pair->low,
+	};
+	struct b43legacy_lopair tmp_pair;
+	struct b43legacy_lopair transition;
+	int i = 12;
+	int state = 0;
+	int found_lower;
+	int j;
+	int begin;
+	int end;
+	u32 lowest_deviation;
+	u32 tmp;
+
+	/* Note that in_pair and out_pair can point to the same pair.
+	 * Be careful. */
+
+	b43legacy_lo_write(dev, &lowest_transition);
+	lowest_deviation = b43legacy_phy_lo_g_singledeviation(dev, r27);
+	do {
+		found_lower = 0;
+		B43legacy_WARN_ON(!(state >= 0 && state <= 8));
+		if (state == 0) {
+			begin = 1;
+			end = 8;
+		} else if (state % 2 == 0) {
+			begin = state - 1;
+			end = state + 1;
+		} else {
+			begin = state - 2;
+			end = state + 2;
+		}
+		if (begin < 1)
+			begin += 8;
+		if (end > 8)
+			end -= 8;
+
+		j = begin;
+		tmp_pair.high = lowest_transition.high;
+		tmp_pair.low = lowest_transition.low;
+		while (1) {
+			B43legacy_WARN_ON(!(j >= 1 && j <= 8));
+			transition.high = tmp_pair.high +
+					  transitions[j - 1].high;
+			transition.low = tmp_pair.low + transitions[j - 1].low;
+			if ((abs(transition.low) < 9)
+			     && (abs(transition.high) < 9)) {
+				b43legacy_lo_write(dev, &transition);
+				tmp = b43legacy_phy_lo_g_singledeviation(dev,
+								       r27);
+				if (tmp < lowest_deviation) {
+					lowest_deviation = tmp;
+					state = j;
+					found_lower = 1;
+
+					lowest_transition.high =
+								transition.high;
+					lowest_transition.low = transition.low;
+				}
+			}
+			if (j == end)
+				break;
+			if (j == 8)
+				j = 1;
+			else
+				j++;
+		}
+	} while (i-- && found_lower);
+
+	out_pair->high = lowest_transition.high;
+	out_pair->low = lowest_transition.low;
+}
+
+/* Set the baseband attenuation value on chip. */
+void b43legacy_phy_set_baseband_attenuation(struct b43legacy_wldev *dev,
+					    u16 bbatt)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 value;
+
+	if (phy->analog == 0) {
+		value = (b43legacy_read16(dev, 0x03E6) & 0xFFF0);
+		value |= (bbatt & 0x000F);
+		b43legacy_write16(dev, 0x03E6, value);
+		return;
+	}
+
+	if (phy->analog > 1) {
+		value = b43legacy_phy_read(dev, 0x0060) & 0xFFC3;
+		value |= (bbatt << 2) & 0x003C;
+	} else {
+		value = b43legacy_phy_read(dev, 0x0060) & 0xFF87;
+		value |= (bbatt << 3) & 0x0078;
+	}
+	b43legacy_phy_write(dev, 0x0060, value);
+}
+
+/* https://bcm-specs.sipsolutions.net/LocalOscillator/Measure */
+void b43legacy_phy_lo_g_measure(struct b43legacy_wldev *dev)
+{
+	static const u8 pairorder[10] = { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8 };
+	const int is_initializing = (b43legacy_status(dev)
+				     < B43legacy_STAT_STARTED);
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 h;
+	u16 i;
+	u16 oldi = 0;
+	u16 j;
+	struct b43legacy_lopair control;
+	struct b43legacy_lopair *tmp_control;
+	u16 tmp;
+	u16 regstack[16] = { 0 };
+	u8 oldchannel;
+
+	/* XXX: What are these? */
+	u8 r27 = 0;
+	u16 r31;
+
+	oldchannel = phy->channel;
+	/* Setup */
+	if (phy->gmode) {
+		regstack[0] = b43legacy_phy_read(dev, B43legacy_PHY_G_CRS);
+		regstack[1] = b43legacy_phy_read(dev, 0x0802);
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0]
+				    & 0x7FFF);
+		b43legacy_phy_write(dev, 0x0802, regstack[1] & 0xFFFC);
+	}
+	regstack[3] = b43legacy_read16(dev, 0x03E2);
+	b43legacy_write16(dev, 0x03E2, regstack[3] | 0x8000);
+	regstack[4] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT);
+	regstack[5] = b43legacy_phy_read(dev, 0x15);
+	regstack[6] = b43legacy_phy_read(dev, 0x2A);
+	regstack[7] = b43legacy_phy_read(dev, 0x35);
+	regstack[8] = b43legacy_phy_read(dev, 0x60);
+	regstack[9] = b43legacy_radio_read16(dev, 0x43);
+	regstack[10] = b43legacy_radio_read16(dev, 0x7A);
+	regstack[11] = b43legacy_radio_read16(dev, 0x52);
+	if (phy->gmode) {
+		regstack[12] = b43legacy_phy_read(dev, 0x0811);
+		regstack[13] = b43legacy_phy_read(dev, 0x0812);
+		regstack[14] = b43legacy_phy_read(dev, 0x0814);
+		regstack[15] = b43legacy_phy_read(dev, 0x0815);
+	}
+	b43legacy_radio_selectchannel(dev, 6, 0);
+	if (phy->gmode) {
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0]
+				    & 0x7FFF);
+		b43legacy_phy_write(dev, 0x0802, regstack[1] & 0xFFFC);
+		b43legacy_dummy_transmission(dev);
+	}
+	b43legacy_radio_write16(dev, 0x0043, 0x0006);
+
+	b43legacy_phy_set_baseband_attenuation(dev, 2);
+
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x0000);
+	b43legacy_phy_write(dev, 0x002E, 0x007F);
+	b43legacy_phy_write(dev, 0x080F, 0x0078);
+	b43legacy_phy_write(dev, 0x0035, regstack[7] & ~(1 << 7));
+	b43legacy_radio_write16(dev, 0x007A, regstack[10] & 0xFFF0);
+	b43legacy_phy_write(dev, 0x002B, 0x0203);
+	b43legacy_phy_write(dev, 0x002A, 0x08A3);
+	if (phy->gmode) {
+		b43legacy_phy_write(dev, 0x0814, regstack[14] | 0x0003);
+		b43legacy_phy_write(dev, 0x0815, regstack[15] & 0xFFFC);
+		b43legacy_phy_write(dev, 0x0811, 0x01B3);
+		b43legacy_phy_write(dev, 0x0812, 0x00B2);
+	}
+	if (is_initializing)
+		b43legacy_phy_lo_g_measure_txctl2(dev);
+	b43legacy_phy_write(dev, 0x080F, 0x8078);
+
+	/* Measure */
+	control.low = 0;
+	control.high = 0;
+	for (h = 0; h < 10; h++) {
+		/* Loop over each possible RadioAttenuation (0-9) */
+		i = pairorder[h];
+		if (is_initializing) {
+			if (i == 3) {
+				control.low = 0;
+				control.high = 0;
+			} else if (((i % 2 == 1) && (oldi % 2 == 1)) ||
+				  ((i % 2 == 0) && (oldi % 2 == 0))) {
+				tmp_control = b43legacy_get_lopair(phy, oldi,
+								   0);
+				memcpy(&control, tmp_control, sizeof(control));
+			} else {
+				tmp_control = b43legacy_get_lopair(phy, 3, 0);
+				memcpy(&control, tmp_control, sizeof(control));
+			}
+		}
+		/* Loop over each possible BasebandAttenuation/2 */
+		for (j = 0; j < 4; j++) {
+			if (is_initializing) {
+				tmp = i * 2 + j;
+				r27 = 0;
+				r31 = 0;
+				if (tmp > 14) {
+					r31 = 1;
+					if (tmp > 17)
+						r27 = 1;
+					if (tmp > 19)
+						r27 = 2;
+				}
+			} else {
+				tmp_control = b43legacy_get_lopair(phy, i,
+								   j * 2);
+				if (!tmp_control->used)
+					continue;
+				memcpy(&control, tmp_control, sizeof(control));
+				r27 = 3;
+				r31 = 0;
+			}
+			b43legacy_radio_write16(dev, 0x43, i);
+			b43legacy_radio_write16(dev, 0x52, phy->txctl2);
+			udelay(10);
+			cond_resched();
+
+			b43legacy_phy_set_baseband_attenuation(dev, j * 2);
+
+			tmp = (regstack[10] & 0xFFF0);
+			if (r31)
+				tmp |= 0x0008;
+			b43legacy_radio_write16(dev, 0x007A, tmp);
+
+			tmp_control = b43legacy_get_lopair(phy, i, j * 2);
+			b43legacy_phy_lo_g_state(dev, &control, tmp_control,
+						 r27);
+		}
+		oldi = i;
+	}
+	/* Loop over each possible RadioAttenuation (10-13) */
+	for (i = 10; i < 14; i++) {
+		/* Loop over each possible BasebandAttenuation/2 */
+		for (j = 0; j < 4; j++) {
+			if (is_initializing) {
+				tmp_control = b43legacy_get_lopair(phy, i - 9,
+								 j * 2);
+				memcpy(&control, tmp_control, sizeof(control));
+				/* FIXME: The next line is wrong, as the
+				 * following if statement can never trigger. */
+				tmp = (i - 9) * 2 + j - 5;
+				r27 = 0;
+				r31 = 0;
+				if (tmp > 14) {
+					r31 = 1;
+					if (tmp > 17)
+						r27 = 1;
+					if (tmp > 19)
+						r27 = 2;
+				}
+			} else {
+				tmp_control = b43legacy_get_lopair(phy, i - 9,
+								   j * 2);
+				if (!tmp_control->used)
+					continue;
+				memcpy(&control, tmp_control, sizeof(control));
+				r27 = 3;
+				r31 = 0;
+			}
+			b43legacy_radio_write16(dev, 0x43, i - 9);
+			/* FIXME: shouldn't txctl1 be zero in the next line
+			 * and 3 in the loop above? */
+			b43legacy_radio_write16(dev, 0x52,
+					      phy->txctl2
+					      | (3/*txctl1*/ << 4));
+			udelay(10);
+			cond_resched();
+
+			b43legacy_phy_set_baseband_attenuation(dev, j * 2);
+
+			tmp = (regstack[10] & 0xFFF0);
+			if (r31)
+				tmp |= 0x0008;
+			b43legacy_radio_write16(dev, 0x7A, tmp);
+
+			tmp_control = b43legacy_get_lopair(phy, i, j * 2);
+			b43legacy_phy_lo_g_state(dev, &control, tmp_control,
+						 r27);
+		}
+	}
+
+	/* Restoration */
+	if (phy->gmode) {
+		b43legacy_phy_write(dev, 0x0015, 0xE300);
+		b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA0);
+		udelay(5);
+		b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA2);
+		udelay(2);
+		b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA3);
+		cond_resched();
+	} else
+		b43legacy_phy_write(dev, 0x0015, r27 | 0xEFA0);
+	b43legacy_phy_lo_adjust(dev, is_initializing);
+	b43legacy_phy_write(dev, 0x002E, 0x807F);
+	if (phy->gmode)
+		b43legacy_phy_write(dev, 0x002F, 0x0202);
+	else
+		b43legacy_phy_write(dev, 0x002F, 0x0101);
+	b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, regstack[4]);
+	b43legacy_phy_write(dev, 0x0015, regstack[5]);
+	b43legacy_phy_write(dev, 0x002A, regstack[6]);
+	b43legacy_phy_write(dev, 0x0035, regstack[7]);
+	b43legacy_phy_write(dev, 0x0060, regstack[8]);
+	b43legacy_radio_write16(dev, 0x0043, regstack[9]);
+	b43legacy_radio_write16(dev, 0x007A, regstack[10]);
+	regstack[11] &= 0x00F0;
+	regstack[11] |= (b43legacy_radio_read16(dev, 0x52) & 0x000F);
+	b43legacy_radio_write16(dev, 0x52, regstack[11]);
+	b43legacy_write16(dev, 0x03E2, regstack[3]);
+	if (phy->gmode) {
+		b43legacy_phy_write(dev, 0x0811, regstack[12]);
+		b43legacy_phy_write(dev, 0x0812, regstack[13]);
+		b43legacy_phy_write(dev, 0x0814, regstack[14]);
+		b43legacy_phy_write(dev, 0x0815, regstack[15]);
+		b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0]);
+		b43legacy_phy_write(dev, 0x0802, regstack[1]);
+	}
+	b43legacy_radio_selectchannel(dev, oldchannel, 1);
+
+#ifdef CONFIG_B43LEGACY_DEBUG
+	{
+		/* Sanity check for all lopairs. */
+		for (i = 0; i < B43legacy_LO_COUNT; i++) {
+			tmp_control = phy->_lo_pairs + i;
+			if (tmp_control->low < -8 || tmp_control->low > 8 ||
+			    tmp_control->high < -8 || tmp_control->high > 8)
+				b43legacywarn(dev->wl,
+				       "WARNING: Invalid LOpair (low: %d, high:"
+				       " %d, index: %d)\n",
+				       tmp_control->low, tmp_control->high, i);
+		}
+	}
+#endif /* CONFIG_B43LEGACY_DEBUG */
+}
+
+static
+void b43legacy_phy_lo_mark_current_used(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_lopair *pair;
+
+	pair = b43legacy_current_lopair(dev);
+	pair->used = 1;
+}
+
+void b43legacy_phy_lo_mark_all_unused(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	struct b43legacy_lopair *pair;
+	int i;
+
+	for (i = 0; i < B43legacy_LO_COUNT; i++) {
+		pair = phy->_lo_pairs + i;
+		pair->used = 0;
+	}
+}
+
+/* https://bcm-specs.sipsolutions.net/EstimatePowerOut
+ * This function converts a TSSI value to dBm in Q5.2
+ */
+static s8 b43legacy_phy_estimate_power_out(struct b43legacy_wldev *dev, s8 tssi)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s8 dbm = 0;
+	s32 tmp;
+
+	tmp = phy->idle_tssi;
+	tmp += tssi;
+	tmp -= phy->savedpctlreg;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+	case B43legacy_PHYTYPE_G:
+		tmp = clamp_val(tmp, 0x00, 0x3F);
+		dbm = phy->tssi2dbm[tmp];
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+
+	return dbm;
+}
+
+/* https://bcm-specs.sipsolutions.net/RecalculateTransmissionPower */
+void b43legacy_phy_xmitpower(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 tmp;
+	u16 txpower;
+	s8 v0;
+	s8 v1;
+	s8 v2;
+	s8 v3;
+	s8 average;
+	int max_pwr;
+	s16 desired_pwr;
+	s16 estimated_pwr;
+	s16 pwr_adjust;
+	s16 radio_att_delta;
+	s16 baseband_att_delta;
+	s16 radio_attenuation;
+	s16 baseband_attenuation;
+
+	if (phy->savedpctlreg == 0xFFFF)
+		return;
+	if ((dev->dev->bus->boardinfo.type == 0x0416) &&
+	    is_bcm_board_vendor(dev))
+		return;
+#ifdef CONFIG_B43LEGACY_DEBUG
+	if (phy->manual_txpower_control)
+		return;
+#endif
+
+	B43legacy_BUG_ON(!(phy->type == B43legacy_PHYTYPE_B ||
+			 phy->type == B43legacy_PHYTYPE_G));
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0058);
+	v0 = (s8)(tmp & 0x00FF);
+	v1 = (s8)((tmp & 0xFF00) >> 8);
+	tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x005A);
+	v2 = (s8)(tmp & 0x00FF);
+	v3 = (s8)((tmp & 0xFF00) >> 8);
+	tmp = 0;
+
+	if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F) {
+		tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+					 0x0070);
+		v0 = (s8)(tmp & 0x00FF);
+		v1 = (s8)((tmp & 0xFF00) >> 8);
+		tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
+					 0x0072);
+		v2 = (s8)(tmp & 0x00FF);
+		v3 = (s8)((tmp & 0xFF00) >> 8);
+		if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F)
+			return;
+		v0 = (v0 + 0x20) & 0x3F;
+		v1 = (v1 + 0x20) & 0x3F;
+		v2 = (v2 + 0x20) & 0x3F;
+		v3 = (v3 + 0x20) & 0x3F;
+		tmp = 1;
+	}
+	b43legacy_radio_clear_tssi(dev);
+
+	average = (v0 + v1 + v2 + v3 + 2) / 4;
+
+	if (tmp && (b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x005E)
+	    & 0x8))
+		average -= 13;
+
+	estimated_pwr = b43legacy_phy_estimate_power_out(dev, average);
+
+	max_pwr = dev->dev->bus->sprom.maxpwr_bg;
+
+	if ((dev->dev->bus->sprom.boardflags_lo
+	     & B43legacy_BFL_PACTRL) &&
+	    (phy->type == B43legacy_PHYTYPE_G))
+		max_pwr -= 0x3;
+	if (unlikely(max_pwr <= 0)) {
+		b43legacywarn(dev->wl, "Invalid max-TX-power value in SPROM."
+			"\n");
+		max_pwr = 74; /* fake it */
+		dev->dev->bus->sprom.maxpwr_bg = max_pwr;
+	}
+
+	/* Use regulatory information to get the maximum power.
+	 * In the absence of such data from mac80211, we will use 20 dBm, which
+	 * is the value for the EU, US, Canada, and most of the world.
+	 * The regulatory maximum is reduced by the antenna gain (from sprom)
+	 * and 1.5 dBm (a safety factor??). The result is in Q5.2 format
+	 * which accounts for the factor of 4 */
+#define REG_MAX_PWR 20
+	max_pwr = min(REG_MAX_PWR * 4
+		      - dev->dev->bus->sprom.antenna_gain.a0
+		      - 0x6, max_pwr);
+
+	/* find the desired power in Q5.2 - power_level is in dBm
+	 * and limit it - max_pwr is already in Q5.2 */
+	desired_pwr = clamp_val(phy->power_level << 2, 0, max_pwr);
+	if (b43legacy_debug(dev, B43legacy_DBG_XMITPOWER))
+		b43legacydbg(dev->wl, "Current TX power output: " Q52_FMT
+		       " dBm, Desired TX power output: " Q52_FMT
+		       " dBm\n", Q52_ARG(estimated_pwr),
+		       Q52_ARG(desired_pwr));
+	/* Check if we need to adjust the current power. The factor of 2 is
+	 * for damping */
+	pwr_adjust = (desired_pwr - estimated_pwr) / 2;
+	/* RF attenuation delta
+	 * The minus sign is because lower attenuation => more power */
+	radio_att_delta = -(pwr_adjust + 7) >> 3;
+	/* Baseband attenuation delta */
+	baseband_att_delta = -(pwr_adjust >> 1) - (4 * radio_att_delta);
+	/* Do we need to adjust anything? */
+	if ((radio_att_delta == 0) && (baseband_att_delta == 0)) {
+		b43legacy_phy_lo_mark_current_used(dev);
+		return;
+	}
+
+	/* Calculate the new attenuation values. */
+	baseband_attenuation = phy->bbatt;
+	baseband_attenuation += baseband_att_delta;
+	radio_attenuation = phy->rfatt;
+	radio_attenuation += radio_att_delta;
+
+	/* Get baseband and radio attenuation values into permitted ranges.
+	 * baseband 0-11, radio 0-9.
+	 * Radio attenuation affects power level 4 times as much as baseband.
+	 */
+	if (radio_attenuation < 0) {
+		baseband_attenuation -= (4 * -radio_attenuation);
+		radio_attenuation = 0;
+	} else if (radio_attenuation > 9) {
+		baseband_attenuation += (4 * (radio_attenuation - 9));
+		radio_attenuation = 9;
+	} else {
+		while (baseband_attenuation < 0 && radio_attenuation > 0) {
+			baseband_attenuation += 4;
+			radio_attenuation--;
+		}
+		while (baseband_attenuation > 11 && radio_attenuation < 9) {
+			baseband_attenuation -= 4;
+			radio_attenuation++;
+		}
+	}
+	baseband_attenuation = clamp_val(baseband_attenuation, 0, 11);
+
+	txpower = phy->txctl1;
+	if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 2)) {
+		if (radio_attenuation <= 1) {
+			if (txpower == 0) {
+				txpower = 3;
+				radio_attenuation += 2;
+				baseband_attenuation += 2;
+			} else if (dev->dev->bus->sprom.boardflags_lo
+				   & B43legacy_BFL_PACTRL) {
+				baseband_attenuation += 4 *
+						     (radio_attenuation - 2);
+				radio_attenuation = 2;
+			}
+		} else if (radio_attenuation > 4 && txpower != 0) {
+			txpower = 0;
+			if (baseband_attenuation < 3) {
+				radio_attenuation -= 3;
+				baseband_attenuation += 2;
+			} else {
+				radio_attenuation -= 2;
+				baseband_attenuation -= 2;
+			}
+		}
+	}
+	/* Save the control values */
+	phy->txctl1 = txpower;
+	baseband_attenuation = clamp_val(baseband_attenuation, 0, 11);
+	radio_attenuation = clamp_val(radio_attenuation, 0, 9);
+	phy->rfatt = radio_attenuation;
+	phy->bbatt = baseband_attenuation;
+
+	/* Adjust the hardware */
+	b43legacy_phy_lock(dev);
+	b43legacy_radio_lock(dev);
+	b43legacy_radio_set_txpower_bg(dev, baseband_attenuation,
+				       radio_attenuation, txpower);
+	b43legacy_phy_lo_mark_current_used(dev);
+	b43legacy_radio_unlock(dev);
+	b43legacy_phy_unlock(dev);
+}
+
+static inline
+s32 b43legacy_tssi2dbm_ad(s32 num, s32 den)
+{
+	if (num < 0)
+		return num/den;
+	else
+		return (num+den/2)/den;
+}
+
+static inline
+s8 b43legacy_tssi2dbm_entry(s8 entry [], u8 index, s16 pab0, s16 pab1, s16 pab2)
+{
+	s32 m1;
+	s32 m2;
+	s32 f = 256;
+	s32 q;
+	s32 delta;
+	s8 i = 0;
+
+	m1 = b43legacy_tssi2dbm_ad(16 * pab0 + index * pab1, 32);
+	m2 = max(b43legacy_tssi2dbm_ad(32768 + index * pab2, 256), 1);
+	do {
+		if (i > 15)
+			return -EINVAL;
+		q = b43legacy_tssi2dbm_ad(f * 4096 -
+					  b43legacy_tssi2dbm_ad(m2 * f, 16) *
+					  f, 2048);
+		delta = abs(q - f);
+		f = q;
+		i++;
+	} while (delta >= 2);
+	entry[index] = clamp_val(b43legacy_tssi2dbm_ad(m1 * f, 8192),
+				   -127, 128);
+	return 0;
+}
+
+/* http://bcm-specs.sipsolutions.net/TSSI_to_DBM_Table */
+int b43legacy_phy_init_tssi2dbm_table(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s16 pab0;
+	s16 pab1;
+	s16 pab2;
+	u8 idx;
+	s8 *dyn_tssi2dbm;
+
+	B43legacy_WARN_ON(!(phy->type == B43legacy_PHYTYPE_B ||
+			  phy->type == B43legacy_PHYTYPE_G));
+	pab0 = (s16)(dev->dev->bus->sprom.pa0b0);
+	pab1 = (s16)(dev->dev->bus->sprom.pa0b1);
+	pab2 = (s16)(dev->dev->bus->sprom.pa0b2);
+
+	if ((dev->dev->bus->chip_id == 0x4301) && (phy->radio_ver != 0x2050)) {
+		phy->idle_tssi = 0x34;
+		phy->tssi2dbm = b43legacy_tssi2dbm_b_table;
+		return 0;
+	}
+
+	if (pab0 != 0 && pab1 != 0 && pab2 != 0 &&
+	    pab0 != -1 && pab1 != -1 && pab2 != -1) {
+		/* The pabX values are set in SPROM. Use them. */
+		if ((s8)dev->dev->bus->sprom.itssi_bg != 0 &&
+		    (s8)dev->dev->bus->sprom.itssi_bg != -1)
+			phy->idle_tssi = (s8)(dev->dev->bus->sprom.
+					  itssi_bg);
+		else
+			phy->idle_tssi = 62;
+		dyn_tssi2dbm = kmalloc(64, GFP_KERNEL);
+		if (dyn_tssi2dbm == NULL) {
+			b43legacyerr(dev->wl, "Could not allocate memory "
+			       "for tssi2dbm table\n");
+			return -ENOMEM;
+		}
+		for (idx = 0; idx < 64; idx++)
+			if (b43legacy_tssi2dbm_entry(dyn_tssi2dbm, idx, pab0,
+						     pab1, pab2)) {
+				phy->tssi2dbm = NULL;
+				b43legacyerr(dev->wl, "Could not generate "
+				       "tssi2dBm table\n");
+				kfree(dyn_tssi2dbm);
+				return -ENODEV;
+			}
+		phy->tssi2dbm = dyn_tssi2dbm;
+		phy->dyn_tssi_tbl = 1;
+	} else {
+		/* pabX values not set in SPROM. */
+		switch (phy->type) {
+		case B43legacy_PHYTYPE_B:
+			phy->idle_tssi = 0x34;
+			phy->tssi2dbm = b43legacy_tssi2dbm_b_table;
+			break;
+		case B43legacy_PHYTYPE_G:
+			phy->idle_tssi = 0x34;
+			phy->tssi2dbm = b43legacy_tssi2dbm_g_table;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+int b43legacy_phy_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	int err = -ENODEV;
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_B:
+		switch (phy->rev) {
+		case 2:
+			b43legacy_phy_initb2(dev);
+			err = 0;
+			break;
+		case 4:
+			b43legacy_phy_initb4(dev);
+			err = 0;
+			break;
+		case 5:
+			b43legacy_phy_initb5(dev);
+			err = 0;
+			break;
+		case 6:
+			b43legacy_phy_initb6(dev);
+			err = 0;
+			break;
+		}
+		break;
+	case B43legacy_PHYTYPE_G:
+		b43legacy_phy_initg(dev);
+		err = 0;
+		break;
+	}
+	if (err)
+		b43legacyerr(dev->wl, "Unknown PHYTYPE found\n");
+
+	return err;
+}
+
+void b43legacy_phy_set_antenna_diversity(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	u16 antennadiv;
+	u16 offset;
+	u16 value;
+	u32 ucodeflags;
+
+	antennadiv = phy->antenna_diversity;
+
+	if (antennadiv == 0xFFFF)
+		antennadiv = 3;
+	B43legacy_WARN_ON(antennadiv > 3);
+
+	ucodeflags = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED,
+					  B43legacy_UCODEFLAGS_OFFSET);
+	b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+			      B43legacy_UCODEFLAGS_OFFSET,
+			      ucodeflags & ~B43legacy_UCODEFLAG_AUTODIV);
+
+	switch (phy->type) {
+	case B43legacy_PHYTYPE_G:
+		offset = 0x0400;
+
+		if (antennadiv == 2)
+			value = (3/*automatic*/ << 7);
+		else
+			value = (antennadiv << 7);
+		b43legacy_phy_write(dev, offset + 1,
+				    (b43legacy_phy_read(dev, offset + 1)
+				    & 0x7E7F) | value);
+
+		if (antennadiv >= 2) {
+			if (antennadiv == 2)
+				value = (antennadiv << 7);
+			else
+				value = (0/*force0*/ << 7);
+			b43legacy_phy_write(dev, offset + 0x2B,
+					    (b43legacy_phy_read(dev,
+					    offset + 0x2B)
+					    & 0xFEFF) | value);
+		}
+
+		if (phy->type == B43legacy_PHYTYPE_G) {
+			if (antennadiv >= 2)
+				b43legacy_phy_write(dev, 0x048C,
+						    b43legacy_phy_read(dev,
+						    0x048C) | 0x2000);
+			else
+				b43legacy_phy_write(dev, 0x048C,
+						    b43legacy_phy_read(dev,
+						    0x048C) & ~0x2000);
+			if (phy->rev >= 2) {
+				b43legacy_phy_write(dev, 0x0461,
+						    b43legacy_phy_read(dev,
+						    0x0461) | 0x0010);
+				b43legacy_phy_write(dev, 0x04AD,
+						    (b43legacy_phy_read(dev,
+						    0x04AD)
+						    & 0x00FF) | 0x0015);
+				if (phy->rev == 2)
+					b43legacy_phy_write(dev, 0x0427,
+							    0x0008);
+				else
+					b43legacy_phy_write(dev, 0x0427,
+						(b43legacy_phy_read(dev, 0x0427)
+						 & 0x00FF) | 0x0008);
+			} else if (phy->rev >= 6)
+				b43legacy_phy_write(dev, 0x049B, 0x00DC);
+		} else {
+			if (phy->rev < 3)
+				b43legacy_phy_write(dev, 0x002B,
+						    (b43legacy_phy_read(dev,
+						    0x002B) & 0x00FF)
+						    | 0x0024);
+			else {
+				b43legacy_phy_write(dev, 0x0061,
+						    b43legacy_phy_read(dev,
+						    0x0061) | 0x0010);
+				if (phy->rev == 3) {
+					b43legacy_phy_write(dev, 0x0093,
+							    0x001D);
+					b43legacy_phy_write(dev, 0x0027,
+							    0x0008);
+				} else {
+					b43legacy_phy_write(dev, 0x0093,
+							    0x003A);
+					b43legacy_phy_write(dev, 0x0027,
+						(b43legacy_phy_read(dev, 0x0027)
+						 & 0x00FF) | 0x0008);
+				}
+			}
+		}
+		break;
+	case B43legacy_PHYTYPE_B:
+		if (dev->dev->id.revision == 2)
+			value = (3/*automatic*/ << 7);
+		else
+			value = (antennadiv << 7);
+		b43legacy_phy_write(dev, 0x03E2,
+				    (b43legacy_phy_read(dev, 0x03E2)
+				    & 0xFE7F) | value);
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+
+	if (antennadiv >= 2) {
+		ucodeflags = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED,
+						  B43legacy_UCODEFLAGS_OFFSET);
+		b43legacy_shm_write32(dev, B43legacy_SHM_SHARED,
+				      B43legacy_UCODEFLAGS_OFFSET,
+				      ucodeflags | B43legacy_UCODEFLAG_AUTODIV);
+	}
+
+	phy->antenna_diversity = antennadiv;
+}
+
+/* Set the PowerSavingControlBits.
+ * Bitvalues:
+ *   0  => unset the bit
+ *   1  => set the bit
+ *   -1 => calculate the bit
+ */
+void b43legacy_power_saving_ctl_bits(struct b43legacy_wldev *dev,
+				     int bit25, int bit26)
+{
+	int i;
+	u32 status;
+
+/* FIXME: Force 25 to off and 26 to on for now: */
+bit25 = 0;
+bit26 = 1;
+
+	if (bit25 == -1) {
+		/* TODO: If powersave is not off and FIXME is not set and we
+		 *	are not in adhoc and thus is not an AP and we arei
+		 *	associated, set bit 25 */
+	}
+	if (bit26 == -1) {
+		/* TODO: If the device is awake or this is an AP, or we are
+		 *	scanning, or FIXME, or we are associated, or FIXME,
+		 *	or the latest PS-Poll packet sent was successful,
+		 *	set bit26  */
+	}
+	status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	if (bit25)
+		status |= B43legacy_MACCTL_HWPS;
+	else
+		status &= ~B43legacy_MACCTL_HWPS;
+	if (bit26)
+		status |= B43legacy_MACCTL_AWAKE;
+	else
+		status &= ~B43legacy_MACCTL_AWAKE;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
+	if (bit26 && dev->dev->id.revision >= 5) {
+		for (i = 0; i < 100; i++) {
+			if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED,
+						 0x0040) != 4)
+				break;
+			udelay(10);
+		}
+	}
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/phy.h b/drivers/net/wireless/broadcom/b43legacy/phy.h
new file mode 100644
index 000000000..bb2c492da
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/phy.h
@@ -0,0 +1,196 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <stefano.brivio@polimi.it>
+		     Michael Buesch <m@bues.ch>
+		     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.
+
+
+*/
+
+#ifndef B43legacy_PHY_H_
+#define B43legacy_PHY_H_
+
+#include <linux/types.h>
+
+enum {
+	B43legacy_ANTENNA0,	  /* Antenna 0 */
+	B43legacy_ANTENNA1,	  /* Antenna 0 */
+	B43legacy_ANTENNA_AUTO1,  /* Automatic, starting with antenna 1 */
+	B43legacy_ANTENNA_AUTO0,  /* Automatic, starting with antenna 0 */
+
+	B43legacy_ANTENNA_AUTO	= B43legacy_ANTENNA_AUTO0,
+	B43legacy_ANTENNA_DEFAULT = B43legacy_ANTENNA_AUTO,
+};
+
+enum {
+	B43legacy_INTERFMODE_NONE,
+	B43legacy_INTERFMODE_NONWLAN,
+	B43legacy_INTERFMODE_MANUALWLAN,
+	B43legacy_INTERFMODE_AUTOWLAN,
+};
+
+/*** PHY Registers ***/
+
+/* Routing */
+#define B43legacy_PHYROUTE_OFDM_GPHY	0x400
+#define B43legacy_PHYROUTE_EXT_GPHY	0x800
+
+/* Base registers. */
+#define B43legacy_PHY_BASE(reg)	(reg)
+/* OFDM (A) registers of a G-PHY */
+#define B43legacy_PHY_OFDM(reg)	((reg) | B43legacy_PHYROUTE_OFDM_GPHY)
+/* Extended G-PHY registers */
+#define B43legacy_PHY_EXTG(reg)	((reg) | B43legacy_PHYROUTE_EXT_GPHY)
+
+
+/* Extended G-PHY Registers */
+#define B43legacy_PHY_CLASSCTL		B43legacy_PHY_EXTG(0x02)	/* Classify control */
+#define B43legacy_PHY_GTABCTL		B43legacy_PHY_EXTG(0x03)	/* G-PHY table control (see below) */
+#define  B43legacy_PHY_GTABOFF		0x03FF			/* G-PHY table offset (see below) */
+#define  B43legacy_PHY_GTABNR		0xFC00			/* G-PHY table number (see below) */
+#define  B43legacy_PHY_GTABNR_SHIFT	10
+#define B43legacy_PHY_GTABDATA		B43legacy_PHY_EXTG(0x04)	/* G-PHY table data */
+#define B43legacy_PHY_LO_MASK		B43legacy_PHY_EXTG(0x0F)	/* Local Oscillator control mask */
+#define B43legacy_PHY_LO_CTL		B43legacy_PHY_EXTG(0x10)	/* Local Oscillator control */
+#define B43legacy_PHY_RFOVER		B43legacy_PHY_EXTG(0x11)	/* RF override */
+#define B43legacy_PHY_RFOVERVAL		B43legacy_PHY_EXTG(0x12)	/* RF override value */
+/*** OFDM table numbers ***/
+#define B43legacy_OFDMTAB(number, offset)				\
+			  (((number) << B43legacy_PHY_OTABLENR_SHIFT)	\
+			  | (offset))
+#define B43legacy_OFDMTAB_AGC1		B43legacy_OFDMTAB(0x00, 0)
+#define B43legacy_OFDMTAB_GAIN0		B43legacy_OFDMTAB(0x00, 0)
+#define B43legacy_OFDMTAB_GAINX		B43legacy_OFDMTAB(0x01, 0)
+#define B43legacy_OFDMTAB_GAIN1		B43legacy_OFDMTAB(0x01, 4)
+#define B43legacy_OFDMTAB_AGC3		B43legacy_OFDMTAB(0x02, 0)
+#define B43legacy_OFDMTAB_GAIN2		B43legacy_OFDMTAB(0x02, 3)
+#define B43legacy_OFDMTAB_LNAHPFGAIN1	B43legacy_OFDMTAB(0x03, 0)
+#define B43legacy_OFDMTAB_WRSSI		B43legacy_OFDMTAB(0x04, 0)
+#define B43legacy_OFDMTAB_LNAHPFGAIN2	B43legacy_OFDMTAB(0x04, 0)
+#define B43legacy_OFDMTAB_NOISESCALE	B43legacy_OFDMTAB(0x05, 0)
+#define B43legacy_OFDMTAB_AGC2		B43legacy_OFDMTAB(0x06, 0)
+#define B43legacy_OFDMTAB_ROTOR		B43legacy_OFDMTAB(0x08, 0)
+#define B43legacy_OFDMTAB_ADVRETARD	B43legacy_OFDMTAB(0x09, 0)
+#define B43legacy_OFDMTAB_DAC		B43legacy_OFDMTAB(0x0C, 0)
+#define B43legacy_OFDMTAB_DC		B43legacy_OFDMTAB(0x0E, 7)
+#define B43legacy_OFDMTAB_PWRDYN2	B43legacy_OFDMTAB(0x0E, 12)
+#define B43legacy_OFDMTAB_LNAGAIN	B43legacy_OFDMTAB(0x0E, 13)
+
+#define B43legacy_OFDMTAB_LPFGAIN	B43legacy_OFDMTAB(0x0F, 12)
+#define B43legacy_OFDMTAB_RSSI		B43legacy_OFDMTAB(0x10, 0)
+
+#define B43legacy_OFDMTAB_AGC1_R1	B43legacy_OFDMTAB(0x13, 0)
+#define B43legacy_OFDMTAB_GAINX_R1	B43legacy_OFDMTAB(0x14, 0)
+#define B43legacy_OFDMTAB_MINSIGSQ	B43legacy_OFDMTAB(0x14, 1)
+#define B43legacy_OFDMTAB_AGC3_R1	B43legacy_OFDMTAB(0x15, 0)
+#define B43legacy_OFDMTAB_WRSSI_R1	B43legacy_OFDMTAB(0x15, 4)
+#define B43legacy_OFDMTAB_TSSI		B43legacy_OFDMTAB(0x15, 0)
+#define B43legacy_OFDMTAB_DACRFPABB	B43legacy_OFDMTAB(0x16, 0)
+#define B43legacy_OFDMTAB_DACOFF	B43legacy_OFDMTAB(0x17, 0)
+#define B43legacy_OFDMTAB_DCBIAS	B43legacy_OFDMTAB(0x18, 0)
+
+void b43legacy_put_attenuation_into_ranges(int *_bbatt, int *_rfatt);
+
+/* OFDM (A) PHY Registers */
+#define B43legacy_PHY_VERSION_OFDM	B43legacy_PHY_OFDM(0x00)	/* Versioning register for A-PHY */
+#define B43legacy_PHY_BBANDCFG		B43legacy_PHY_OFDM(0x01)	/* Baseband config */
+#define  B43legacy_PHY_BBANDCFG_RXANT	0x180			/* RX Antenna selection */
+#define  B43legacy_PHY_BBANDCFG_RXANT_SHIFT	7
+#define B43legacy_PHY_PWRDOWN		B43legacy_PHY_OFDM(0x03)	/* Powerdown */
+#define B43legacy_PHY_CRSTHRES1		B43legacy_PHY_OFDM(0x06)	/* CRS Threshold 1 */
+#define B43legacy_PHY_LNAHPFCTL		B43legacy_PHY_OFDM(0x1C)	/* LNA/HPF control */
+#define B43legacy_PHY_ADIVRELATED	B43legacy_PHY_OFDM(0x27)	/* FIXME rename */
+#define B43legacy_PHY_CRS0		B43legacy_PHY_OFDM(0x29)
+#define B43legacy_PHY_ANTDWELL		B43legacy_PHY_OFDM(0x2B)	/* Antenna dwell */
+#define  B43legacy_PHY_ANTDWELL_AUTODIV1	0x0100			/* Automatic RX diversity start antenna */
+#define B43legacy_PHY_ENCORE		B43legacy_PHY_OFDM(0x49)	/* "Encore" (RangeMax / BroadRange) */
+#define  B43legacy_PHY_ENCORE_EN	0x0200				/* Encore enable */
+#define B43legacy_PHY_LMS		B43legacy_PHY_OFDM(0x55)
+#define B43legacy_PHY_OFDM61		B43legacy_PHY_OFDM(0x61)	/* FIXME rename */
+#define  B43legacy_PHY_OFDM61_10	0x0010				/* FIXME rename */
+#define B43legacy_PHY_IQBAL		B43legacy_PHY_OFDM(0x69)	/* I/Q balance */
+#define B43legacy_PHY_OTABLECTL		B43legacy_PHY_OFDM(0x72)	/* OFDM table control (see below) */
+#define  B43legacy_PHY_OTABLEOFF	0x03FF				/* OFDM table offset (see below) */
+#define  B43legacy_PHY_OTABLENR		0xFC00				/* OFDM table number (see below) */
+#define  B43legacy_PHY_OTABLENR_SHIFT	10
+#define B43legacy_PHY_OTABLEI		B43legacy_PHY_OFDM(0x73)	/* OFDM table data I */
+#define B43legacy_PHY_OTABLEQ		B43legacy_PHY_OFDM(0x74)	/* OFDM table data Q */
+#define B43legacy_PHY_HPWR_TSSICTL	B43legacy_PHY_OFDM(0x78)	/* Hardware power TSSI control */
+#define B43legacy_PHY_NRSSITHRES	B43legacy_PHY_OFDM(0x8A)	/* NRSSI threshold */
+#define B43legacy_PHY_ANTWRSETT		B43legacy_PHY_OFDM(0x8C)	/* Antenna WR settle */
+#define  B43legacy_PHY_ANTWRSETT_ARXDIV	0x2000				/* Automatic RX diversity enabled */
+#define B43legacy_PHY_CLIPPWRDOWNT	B43legacy_PHY_OFDM(0x93)	/* Clip powerdown threshold */
+#define B43legacy_PHY_OFDM9B		B43legacy_PHY_OFDM(0x9B)	/* FIXME rename */
+#define B43legacy_PHY_N1P1GAIN		B43legacy_PHY_OFDM(0xA0)
+#define B43legacy_PHY_P1P2GAIN		B43legacy_PHY_OFDM(0xA1)
+#define B43legacy_PHY_N1N2GAIN		B43legacy_PHY_OFDM(0xA2)
+#define B43legacy_PHY_CLIPTHRES		B43legacy_PHY_OFDM(0xA3)
+#define B43legacy_PHY_CLIPN1P2THRES	B43legacy_PHY_OFDM(0xA4)
+#define B43legacy_PHY_DIVSRCHIDX	B43legacy_PHY_OFDM(0xA8)	/* Divider search gain/index */
+#define B43legacy_PHY_CLIPP2THRES	B43legacy_PHY_OFDM(0xA9)
+#define B43legacy_PHY_CLIPP3THRES	B43legacy_PHY_OFDM(0xAA)
+#define B43legacy_PHY_DIVP1P2GAIN	B43legacy_PHY_OFDM(0xAB)
+#define B43legacy_PHY_DIVSRCHGAINBACK	B43legacy_PHY_OFDM(0xAD)	/* Divider search gain back */
+#define B43legacy_PHY_DIVSRCHGAINCHNG	B43legacy_PHY_OFDM(0xAE)	/* Divider search gain change */
+#define B43legacy_PHY_CRSTHRES1_R1	B43legacy_PHY_OFDM(0xC0)	/* CRS Threshold 1 (rev 1 only) */
+#define B43legacy_PHY_CRSTHRES2_R1	B43legacy_PHY_OFDM(0xC1)	/* CRS Threshold 2 (rev 1 only) */
+#define B43legacy_PHY_TSSIP_LTBASE	B43legacy_PHY_OFDM(0x380)	/* TSSI power lookup table base */
+#define B43legacy_PHY_DC_LTBASE		B43legacy_PHY_OFDM(0x3A0)	/* DC lookup table base */
+#define B43legacy_PHY_GAIN_LTBASE	B43legacy_PHY_OFDM(0x3C0)	/* Gain lookup table base */
+
+void b43legacy_put_attenuation_into_ranges(int *_bbatt, int *_rfatt);
+
+/* Masks for the different PHY versioning registers. */
+#define B43legacy_PHYVER_ANALOG		0xF000
+#define B43legacy_PHYVER_ANALOG_SHIFT	12
+#define B43legacy_PHYVER_TYPE		0x0F00
+#define B43legacy_PHYVER_TYPE_SHIFT	8
+#define B43legacy_PHYVER_VERSION	0x00FF
+
+struct b43legacy_wldev;
+
+void b43legacy_phy_lock(struct b43legacy_wldev *dev);
+void b43legacy_phy_unlock(struct b43legacy_wldev *dev);
+
+/* Card uses the loopback gain stuff */
+#define has_loopback_gain(phy)			 \
+	(((phy)->rev > 1) || ((phy)->gmode))
+
+u16 b43legacy_phy_read(struct b43legacy_wldev *dev, u16 offset);
+void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val);
+
+int b43legacy_phy_init_tssi2dbm_table(struct b43legacy_wldev *dev);
+int b43legacy_phy_init(struct b43legacy_wldev *dev);
+
+void b43legacy_set_rx_antenna(struct b43legacy_wldev *dev, int antenna);
+
+void b43legacy_phy_set_antenna_diversity(struct b43legacy_wldev *dev);
+void b43legacy_phy_calibrate(struct b43legacy_wldev *dev);
+int b43legacy_phy_connect(struct b43legacy_wldev *dev, int connect);
+
+void b43legacy_phy_lo_b_measure(struct b43legacy_wldev *dev);
+void b43legacy_phy_lo_g_measure(struct b43legacy_wldev *dev);
+void b43legacy_phy_xmitpower(struct b43legacy_wldev *dev);
+
+/* Adjust the LocalOscillator to the saved values.
+ * "fixed" is only set to 1 once in initialization. Set to 0 otherwise.
+ */
+void b43legacy_phy_lo_adjust(struct b43legacy_wldev *dev, int fixed);
+void b43legacy_phy_lo_mark_all_unused(struct b43legacy_wldev *dev);
+
+void b43legacy_phy_set_baseband_attenuation(struct b43legacy_wldev *dev,
+					    u16 baseband_attenuation);
+
+void b43legacy_power_saving_ctl_bits(struct b43legacy_wldev *dev,
+				     int bit25, int bit26);
+
+#endif /* B43legacy_PHY_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/pio.c b/drivers/net/wireless/broadcom/b43legacy/pio.c
new file mode 100644
index 000000000..aac413d0f
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/pio.c
@@ -0,0 +1,681 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  PIO Transmission
+
+  Copyright (c) 2005 Michael Buesch <m@bues.ch>
+
+
+*/
+
+#include "b43legacy.h"
+#include "pio.h"
+#include "main.h"
+#include "xmit.h"
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+
+static void tx_start(struct b43legacy_pioqueue *queue)
+{
+	b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+			    B43legacy_PIO_TXCTL_INIT);
+}
+
+static void tx_octet(struct b43legacy_pioqueue *queue,
+		     u8 octet)
+{
+	if (queue->need_workarounds) {
+		b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet);
+		b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+				    B43legacy_PIO_TXCTL_WRITELO);
+	} else {
+		b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+				    B43legacy_PIO_TXCTL_WRITELO);
+		b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet);
+	}
+}
+
+static u16 tx_get_next_word(const u8 *txhdr,
+			    const u8 *packet,
+			    size_t txhdr_size,
+			    unsigned int *pos)
+{
+	const u8 *source;
+	unsigned int i = *pos;
+	u16 ret;
+
+	if (i < txhdr_size)
+		source = txhdr;
+	else {
+		source = packet;
+		i -= txhdr_size;
+	}
+	ret = le16_to_cpu(*((__le16 *)(source + i)));
+	*pos += 2;
+
+	return ret;
+}
+
+static void tx_data(struct b43legacy_pioqueue *queue,
+		    u8 *txhdr,
+		    const u8 *packet,
+		    unsigned int octets)
+{
+	u16 data;
+	unsigned int i = 0;
+
+	if (queue->need_workarounds) {
+		data = tx_get_next_word(txhdr, packet,
+					sizeof(struct b43legacy_txhdr_fw3), &i);
+		b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data);
+	}
+	b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+			    B43legacy_PIO_TXCTL_WRITELO |
+			    B43legacy_PIO_TXCTL_WRITEHI);
+	while (i < octets - 1) {
+		data = tx_get_next_word(txhdr, packet,
+					sizeof(struct b43legacy_txhdr_fw3), &i);
+		b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data);
+	}
+	if (octets % 2)
+		tx_octet(queue, packet[octets -
+			 sizeof(struct b43legacy_txhdr_fw3) - 1]);
+}
+
+static void tx_complete(struct b43legacy_pioqueue *queue,
+			struct sk_buff *skb)
+{
+	if (queue->need_workarounds) {
+		b43legacy_pio_write(queue, B43legacy_PIO_TXDATA,
+				    skb->data[skb->len - 1]);
+		b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+				    B43legacy_PIO_TXCTL_WRITELO |
+				    B43legacy_PIO_TXCTL_COMPLETE);
+	} else
+		b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+				    B43legacy_PIO_TXCTL_COMPLETE);
+}
+
+static u16 generate_cookie(struct b43legacy_pioqueue *queue,
+			   struct b43legacy_pio_txpacket *packet)
+{
+	u16 cookie = 0x0000;
+	int packetindex;
+
+	/* We use the upper 4 bits for the PIO
+	 * controller ID and the lower 12 bits
+	 * for the packet index (in the cache).
+	 */
+	switch (queue->mmio_base) {
+	case B43legacy_MMIO_PIO1_BASE:
+		break;
+	case B43legacy_MMIO_PIO2_BASE:
+		cookie = 0x1000;
+		break;
+	case B43legacy_MMIO_PIO3_BASE:
+		cookie = 0x2000;
+		break;
+	case B43legacy_MMIO_PIO4_BASE:
+		cookie = 0x3000;
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+	packetindex = pio_txpacket_getindex(packet);
+	B43legacy_WARN_ON(!(((u16)packetindex & 0xF000) == 0x0000));
+	cookie |= (u16)packetindex;
+
+	return cookie;
+}
+
+static
+struct b43legacy_pioqueue *parse_cookie(struct b43legacy_wldev *dev,
+					u16 cookie,
+					struct b43legacy_pio_txpacket **packet)
+{
+	struct b43legacy_pio *pio = &dev->pio;
+	struct b43legacy_pioqueue *queue = NULL;
+	int packetindex;
+
+	switch (cookie & 0xF000) {
+	case 0x0000:
+		queue = pio->queue0;
+		break;
+	case 0x1000:
+		queue = pio->queue1;
+		break;
+	case 0x2000:
+		queue = pio->queue2;
+		break;
+	case 0x3000:
+		queue = pio->queue3;
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+	packetindex = (cookie & 0x0FFF);
+	B43legacy_WARN_ON(!(packetindex >= 0 && packetindex
+			  < B43legacy_PIO_MAXTXPACKETS));
+	*packet = &(queue->tx_packets_cache[packetindex]);
+
+	return queue;
+}
+
+union txhdr_union {
+	struct b43legacy_txhdr_fw3 txhdr_fw3;
+};
+
+static int pio_tx_write_fragment(struct b43legacy_pioqueue *queue,
+				  struct sk_buff *skb,
+				  struct b43legacy_pio_txpacket *packet,
+				  size_t txhdr_size)
+{
+	union txhdr_union txhdr_data;
+	u8 *txhdr = NULL;
+	unsigned int octets;
+	int err;
+
+	txhdr = (u8 *)(&txhdr_data.txhdr_fw3);
+
+	B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0);
+	err = b43legacy_generate_txhdr(queue->dev,
+				 txhdr, skb->data, skb->len,
+				 IEEE80211_SKB_CB(skb),
+				 generate_cookie(queue, packet));
+	if (err)
+		return err;
+
+	tx_start(queue);
+	octets = skb->len + txhdr_size;
+	if (queue->need_workarounds)
+		octets--;
+	tx_data(queue, txhdr, (u8 *)skb->data, octets);
+	tx_complete(queue, skb);
+
+	return 0;
+}
+
+static void free_txpacket(struct b43legacy_pio_txpacket *packet,
+			  int irq_context)
+{
+	struct b43legacy_pioqueue *queue = packet->queue;
+
+	if (packet->skb) {
+		if (irq_context)
+			dev_kfree_skb_irq(packet->skb);
+		else
+			dev_kfree_skb(packet->skb);
+	}
+	list_move(&packet->list, &queue->txfree);
+	queue->nr_txfree++;
+}
+
+static int pio_tx_packet(struct b43legacy_pio_txpacket *packet)
+{
+	struct b43legacy_pioqueue *queue = packet->queue;
+	struct sk_buff *skb = packet->skb;
+	u16 octets;
+	int err;
+
+	octets = (u16)skb->len + sizeof(struct b43legacy_txhdr_fw3);
+	if (queue->tx_devq_size < octets) {
+		b43legacywarn(queue->dev->wl, "PIO queue too small. "
+			"Dropping packet.\n");
+		/* Drop it silently (return success) */
+		free_txpacket(packet, 1);
+		return 0;
+	}
+	B43legacy_WARN_ON(queue->tx_devq_packets >
+			  B43legacy_PIO_MAXTXDEVQPACKETS);
+	B43legacy_WARN_ON(queue->tx_devq_used > queue->tx_devq_size);
+	/* Check if there is sufficient free space on the device
+	 * TX queue. If not, return and let the TX tasklet
+	 * retry later.
+	 */
+	if (queue->tx_devq_packets == B43legacy_PIO_MAXTXDEVQPACKETS)
+		return -EBUSY;
+	if (queue->tx_devq_used + octets > queue->tx_devq_size)
+		return -EBUSY;
+	/* Now poke the device. */
+	err = pio_tx_write_fragment(queue, skb, packet,
+			      sizeof(struct b43legacy_txhdr_fw3));
+	if (unlikely(err == -ENOKEY)) {
+		/* Drop this packet, as we don't have the encryption key
+		 * anymore and must not transmit it unencrypted. */
+		free_txpacket(packet, 1);
+		return 0;
+	}
+
+	/* Account for the packet size.
+	 * (We must not overflow the device TX queue)
+	 */
+	queue->tx_devq_packets++;
+	queue->tx_devq_used += octets;
+
+	/* Transmission started, everything ok, move the
+	 * packet to the txrunning list.
+	 */
+	list_move_tail(&packet->list, &queue->txrunning);
+
+	return 0;
+}
+
+static void tx_tasklet(struct tasklet_struct *t)
+{
+	struct b43legacy_pioqueue *queue = from_tasklet(queue, t, txtask);
+	struct b43legacy_wldev *dev = queue->dev;
+	unsigned long flags;
+	struct b43legacy_pio_txpacket *packet, *tmp_packet;
+	int err;
+	u16 txctl;
+
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+	if (queue->tx_frozen)
+		goto out_unlock;
+	txctl = b43legacy_pio_read(queue, B43legacy_PIO_TXCTL);
+	if (txctl & B43legacy_PIO_TXCTL_SUSPEND)
+		goto out_unlock;
+
+	list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) {
+		/* Try to transmit the packet. This can fail, if
+		 * the device queue is full. In case of failure, the
+		 * packet is left in the txqueue.
+		 * If transmission succeed, the packet is moved to txrunning.
+		 * If it is impossible to transmit the packet, it
+		 * is dropped.
+		 */
+		err = pio_tx_packet(packet);
+		if (err)
+			break;
+	}
+out_unlock:
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+}
+
+static void setup_txqueues(struct b43legacy_pioqueue *queue)
+{
+	struct b43legacy_pio_txpacket *packet;
+	int i;
+
+	queue->nr_txfree = B43legacy_PIO_MAXTXPACKETS;
+	for (i = 0; i < B43legacy_PIO_MAXTXPACKETS; i++) {
+		packet = &(queue->tx_packets_cache[i]);
+
+		packet->queue = queue;
+		INIT_LIST_HEAD(&packet->list);
+
+		list_add(&packet->list, &queue->txfree);
+	}
+}
+
+static
+struct b43legacy_pioqueue *b43legacy_setup_pioqueue(struct b43legacy_wldev *dev,
+						    u16 pio_mmio_base)
+{
+	struct b43legacy_pioqueue *queue;
+	u32 value;
+	u16 qsize;
+
+	queue = kzalloc(sizeof(*queue), GFP_KERNEL);
+	if (!queue)
+		goto out;
+
+	queue->dev = dev;
+	queue->mmio_base = pio_mmio_base;
+	queue->need_workarounds = (dev->dev->id.revision < 3);
+
+	INIT_LIST_HEAD(&queue->txfree);
+	INIT_LIST_HEAD(&queue->txqueue);
+	INIT_LIST_HEAD(&queue->txrunning);
+	tasklet_setup(&queue->txtask, tx_tasklet);
+
+	value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
+	value &= ~B43legacy_MACCTL_BE;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value);
+
+	qsize = b43legacy_read16(dev, queue->mmio_base
+				 + B43legacy_PIO_TXQBUFSIZE);
+	if (qsize == 0) {
+		b43legacyerr(dev->wl, "This card does not support PIO "
+		       "operation mode. Please use DMA mode "
+		       "(module parameter pio=0).\n");
+		goto err_freequeue;
+	}
+	if (qsize <= B43legacy_PIO_TXQADJUST) {
+		b43legacyerr(dev->wl, "PIO tx device-queue too small (%u)\n",
+		       qsize);
+		goto err_freequeue;
+	}
+	qsize -= B43legacy_PIO_TXQADJUST;
+	queue->tx_devq_size = qsize;
+
+	setup_txqueues(queue);
+
+out:
+	return queue;
+
+err_freequeue:
+	kfree(queue);
+	queue = NULL;
+	goto out;
+}
+
+static void cancel_transfers(struct b43legacy_pioqueue *queue)
+{
+	struct b43legacy_pio_txpacket *packet, *tmp_packet;
+
+	tasklet_kill(&queue->txtask);
+
+	list_for_each_entry_safe(packet, tmp_packet, &queue->txrunning, list)
+		free_txpacket(packet, 0);
+	list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list)
+		free_txpacket(packet, 0);
+}
+
+static void b43legacy_destroy_pioqueue(struct b43legacy_pioqueue *queue)
+{
+	if (!queue)
+		return;
+
+	cancel_transfers(queue);
+	kfree(queue);
+}
+
+void b43legacy_pio_free(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_pio *pio;
+
+	if (!b43legacy_using_pio(dev))
+		return;
+	pio = &dev->pio;
+
+	b43legacy_destroy_pioqueue(pio->queue3);
+	pio->queue3 = NULL;
+	b43legacy_destroy_pioqueue(pio->queue2);
+	pio->queue2 = NULL;
+	b43legacy_destroy_pioqueue(pio->queue1);
+	pio->queue1 = NULL;
+	b43legacy_destroy_pioqueue(pio->queue0);
+	pio->queue0 = NULL;
+}
+
+int b43legacy_pio_init(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_pio *pio = &dev->pio;
+	struct b43legacy_pioqueue *queue;
+	int err = -ENOMEM;
+
+	queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO1_BASE);
+	if (!queue)
+		goto out;
+	pio->queue0 = queue;
+
+	queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO2_BASE);
+	if (!queue)
+		goto err_destroy0;
+	pio->queue1 = queue;
+
+	queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO3_BASE);
+	if (!queue)
+		goto err_destroy1;
+	pio->queue2 = queue;
+
+	queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO4_BASE);
+	if (!queue)
+		goto err_destroy2;
+	pio->queue3 = queue;
+
+	if (dev->dev->id.revision < 3)
+		dev->irq_mask |= B43legacy_IRQ_PIO_WORKAROUND;
+
+	b43legacydbg(dev->wl, "PIO initialized\n");
+	err = 0;
+out:
+	return err;
+
+err_destroy2:
+	b43legacy_destroy_pioqueue(pio->queue2);
+	pio->queue2 = NULL;
+err_destroy1:
+	b43legacy_destroy_pioqueue(pio->queue1);
+	pio->queue1 = NULL;
+err_destroy0:
+	b43legacy_destroy_pioqueue(pio->queue0);
+	pio->queue0 = NULL;
+	goto out;
+}
+
+int b43legacy_pio_tx(struct b43legacy_wldev *dev,
+		     struct sk_buff *skb)
+{
+	struct b43legacy_pioqueue *queue = dev->pio.queue1;
+	struct b43legacy_pio_txpacket *packet;
+
+	B43legacy_WARN_ON(queue->tx_suspended);
+	B43legacy_WARN_ON(list_empty(&queue->txfree));
+
+	packet = list_entry(queue->txfree.next, struct b43legacy_pio_txpacket,
+			    list);
+	packet->skb = skb;
+
+	list_move_tail(&packet->list, &queue->txqueue);
+	queue->nr_txfree--;
+	B43legacy_WARN_ON(queue->nr_txfree >= B43legacy_PIO_MAXTXPACKETS);
+
+	tasklet_schedule(&queue->txtask);
+
+	return 0;
+}
+
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+				   const struct b43legacy_txstatus *status)
+{
+	struct b43legacy_pioqueue *queue;
+	struct b43legacy_pio_txpacket *packet;
+	struct ieee80211_tx_info *info;
+	int retry_limit;
+
+	queue = parse_cookie(dev, status->cookie, &packet);
+	B43legacy_WARN_ON(!queue);
+
+	if (!packet->skb)
+		return;
+
+	queue->tx_devq_packets--;
+	queue->tx_devq_used -= (packet->skb->len +
+				sizeof(struct b43legacy_txhdr_fw3));
+
+	info = IEEE80211_SKB_CB(packet->skb);
+
+	/* preserve the confiured retry limit before clearing the status
+	 * The xmit function has overwritten the rc's value with the actual
+	 * retry limit done by the hardware */
+	retry_limit = info->status.rates[0].count;
+	ieee80211_tx_info_clear_status(info);
+
+	if (status->acked)
+		info->flags |= IEEE80211_TX_STAT_ACK;
+
+	if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
+		/*
+		 * If the short retries (RTS, not data frame) have exceeded
+		 * the limit, the hw will not have tried the selected rate,
+		 * but will have used the fallback rate instead.
+		 * Don't let the rate control count attempts for the selected
+		 * rate in this case, otherwise the statistics will be off.
+		 */
+		info->status.rates[0].count = 0;
+		info->status.rates[1].count = status->frame_count;
+	} else {
+		if (status->frame_count > retry_limit) {
+			info->status.rates[0].count = retry_limit;
+			info->status.rates[1].count = status->frame_count -
+					retry_limit;
+
+		} else {
+			info->status.rates[0].count = status->frame_count;
+			info->status.rates[1].idx = -1;
+		}
+	}
+	ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb);
+	packet->skb = NULL;
+
+	free_txpacket(packet, 1);
+	/* If there are packets on the txqueue, poke the tasklet
+	 * to transmit them.
+	 */
+	if (!list_empty(&queue->txqueue))
+		tasklet_schedule(&queue->txtask);
+}
+
+static void pio_rx_error(struct b43legacy_pioqueue *queue,
+			 int clear_buffers,
+			 const char *error)
+{
+	int i;
+
+	b43legacyerr(queue->dev->wl, "PIO RX error: %s\n", error);
+	b43legacy_pio_write(queue, B43legacy_PIO_RXCTL,
+			    B43legacy_PIO_RXCTL_READY);
+	if (clear_buffers) {
+		B43legacy_WARN_ON(queue->mmio_base != B43legacy_MMIO_PIO1_BASE);
+		for (i = 0; i < 15; i++) {
+			/* Dummy read. */
+			b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
+		}
+	}
+}
+
+void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
+{
+	__le16 preamble[21] = { 0 };
+	struct b43legacy_rxhdr_fw3 *rxhdr;
+	u16 tmp;
+	u16 len;
+	u16 macstat;
+	int i;
+	int preamble_readwords;
+	struct sk_buff *skb;
+
+	tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL);
+	if (!(tmp & B43legacy_PIO_RXCTL_DATAAVAILABLE))
+		return;
+	b43legacy_pio_write(queue, B43legacy_PIO_RXCTL,
+			    B43legacy_PIO_RXCTL_DATAAVAILABLE);
+
+	for (i = 0; i < 10; i++) {
+		tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL);
+		if (tmp & B43legacy_PIO_RXCTL_READY)
+			goto data_ready;
+		udelay(10);
+	}
+	b43legacydbg(queue->dev->wl, "PIO RX timed out\n");
+	return;
+data_ready:
+
+	len = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
+	if (unlikely(len > 0x700)) {
+		pio_rx_error(queue, 0, "len > 0x700");
+		return;
+	}
+	if (unlikely(len == 0 && queue->mmio_base !=
+		     B43legacy_MMIO_PIO4_BASE)) {
+		pio_rx_error(queue, 0, "len == 0");
+		return;
+	}
+	preamble[0] = cpu_to_le16(len);
+	if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE)
+		preamble_readwords = 14 / sizeof(u16);
+	else
+		preamble_readwords = 18 / sizeof(u16);
+	for (i = 0; i < preamble_readwords; i++) {
+		tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
+		preamble[i + 1] = cpu_to_le16(tmp);
+	}
+	rxhdr = (struct b43legacy_rxhdr_fw3 *)preamble;
+	macstat = le16_to_cpu(rxhdr->mac_status);
+	if (macstat & B43legacy_RX_MAC_FCSERR) {
+		pio_rx_error(queue,
+			     (queue->mmio_base == B43legacy_MMIO_PIO1_BASE),
+			     "Frame FCS error");
+		return;
+	}
+	if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE) {
+		/* We received an xmit status. */
+		struct b43legacy_hwtxstatus *hw;
+
+		hw = (struct b43legacy_hwtxstatus *)(preamble + 1);
+		b43legacy_handle_hwtxstatus(queue->dev, hw);
+
+		return;
+	}
+
+	skb = dev_alloc_skb(len);
+	if (unlikely(!skb)) {
+		pio_rx_error(queue, 1, "OOM");
+		return;
+	}
+	skb_put(skb, len);
+	for (i = 0; i < len - 1; i += 2) {
+		tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
+		*((__le16 *)(skb->data + i)) = cpu_to_le16(tmp);
+	}
+	if (len % 2) {
+		tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
+		skb->data[len - 1] = (tmp & 0x00FF);
+	}
+	b43legacy_rx(queue->dev, skb, rxhdr);
+}
+
+void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
+{
+	b43legacy_power_saving_ctl_bits(queue->dev, -1, 1);
+	b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+			    b43legacy_pio_read(queue, B43legacy_PIO_TXCTL)
+			    | B43legacy_PIO_TXCTL_SUSPEND);
+}
+
+void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
+{
+	b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
+			    b43legacy_pio_read(queue, B43legacy_PIO_TXCTL)
+			    & ~B43legacy_PIO_TXCTL_SUSPEND);
+	b43legacy_power_saving_ctl_bits(queue->dev, -1, -1);
+	tasklet_schedule(&queue->txtask);
+}
+
+void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_pio *pio;
+
+	B43legacy_WARN_ON(!b43legacy_using_pio(dev));
+	pio = &dev->pio;
+	pio->queue0->tx_frozen = 1;
+	pio->queue1->tx_frozen = 1;
+	pio->queue2->tx_frozen = 1;
+	pio->queue3->tx_frozen = 1;
+}
+
+void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_pio *pio;
+
+	B43legacy_WARN_ON(!b43legacy_using_pio(dev));
+	pio = &dev->pio;
+	pio->queue0->tx_frozen = 0;
+	pio->queue1->tx_frozen = 0;
+	pio->queue2->tx_frozen = 0;
+	pio->queue3->tx_frozen = 0;
+	if (!list_empty(&pio->queue0->txqueue))
+		tasklet_schedule(&pio->queue0->txtask);
+	if (!list_empty(&pio->queue1->txqueue))
+		tasklet_schedule(&pio->queue1->txtask);
+	if (!list_empty(&pio->queue2->txqueue))
+		tasklet_schedule(&pio->queue2->txtask);
+	if (!list_empty(&pio->queue3->txqueue))
+		tasklet_schedule(&pio->queue3->txtask);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/pio.h b/drivers/net/wireless/broadcom/b43legacy/pio.h
new file mode 100644
index 000000000..08cd02282
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/pio.h
@@ -0,0 +1,158 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_PIO_H_
+#define B43legacy_PIO_H_
+
+#include "b43legacy.h"
+
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+
+
+#define B43legacy_PIO_TXCTL		0x00
+#define B43legacy_PIO_TXDATA		0x02
+#define B43legacy_PIO_TXQBUFSIZE	0x04
+#define B43legacy_PIO_RXCTL		0x08
+#define B43legacy_PIO_RXDATA		0x0A
+
+#define B43legacy_PIO_TXCTL_WRITELO	(1 << 0)
+#define B43legacy_PIO_TXCTL_WRITEHI	(1 << 1)
+#define B43legacy_PIO_TXCTL_COMPLETE	(1 << 2)
+#define B43legacy_PIO_TXCTL_INIT	(1 << 3)
+#define B43legacy_PIO_TXCTL_SUSPEND	(1 << 7)
+
+#define B43legacy_PIO_RXCTL_DATAAVAILABLE	(1 << 0)
+#define B43legacy_PIO_RXCTL_READY		(1 << 1)
+
+/* PIO constants */
+#define B43legacy_PIO_MAXTXDEVQPACKETS	31
+#define B43legacy_PIO_TXQADJUST		80
+
+/* PIO tuning knobs */
+#define B43legacy_PIO_MAXTXPACKETS	256
+
+
+
+#ifdef CONFIG_B43LEGACY_PIO
+
+
+struct b43legacy_pioqueue;
+struct b43legacy_xmitstatus;
+
+struct b43legacy_pio_txpacket {
+	struct b43legacy_pioqueue *queue;
+	struct sk_buff *skb;
+	struct list_head list;
+};
+
+#define pio_txpacket_getindex(packet) ((int)((packet) - \
+			      (packet)->queue->tx_packets_cache))
+
+struct b43legacy_pioqueue {
+	struct b43legacy_wldev *dev;
+	u16 mmio_base;
+
+	bool tx_suspended;
+	bool tx_frozen;
+	bool need_workarounds; /* Workarounds needed for core.rev < 3 */
+
+	/* Adjusted size of the device internal TX buffer. */
+	u16 tx_devq_size;
+	/* Used octets of the device internal TX buffer. */
+	u16 tx_devq_used;
+	/* Used packet slots in the device internal TX buffer. */
+	u8 tx_devq_packets;
+	/* Packets from the txfree list can
+	 * be taken on incoming TX requests.
+	 */
+	struct list_head txfree;
+	unsigned int nr_txfree;
+	/* Packets on the txqueue are queued,
+	 * but not completely written to the chip, yet.
+	 */
+	struct list_head txqueue;
+	/* Packets on the txrunning queue are completely
+	 * posted to the device. We are waiting for the txstatus.
+	 */
+	struct list_head txrunning;
+	struct tasklet_struct txtask;
+	struct b43legacy_pio_txpacket
+			 tx_packets_cache[B43legacy_PIO_MAXTXPACKETS];
+};
+
+static inline
+u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue,
+		     u16 offset)
+{
+	return b43legacy_read16(queue->dev, queue->mmio_base + offset);
+}
+
+static inline
+void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
+		       u16 offset, u16 value)
+{
+	b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
+}
+
+
+int b43legacy_pio_init(struct b43legacy_wldev *dev);
+void b43legacy_pio_free(struct b43legacy_wldev *dev);
+
+int b43legacy_pio_tx(struct b43legacy_wldev *dev,
+		   struct sk_buff *skb);
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_txstatus *status);
+void b43legacy_pio_rx(struct b43legacy_pioqueue *queue);
+
+/* Suspend TX queue in hardware. */
+void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue);
+void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue);
+/* Suspend (freeze) the TX tasklet (software level). */
+void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev);
+void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev);
+
+#else /* CONFIG_B43LEGACY_PIO */
+
+static inline
+int b43legacy_pio_init(struct b43legacy_wldev *dev)
+{
+	return 0;
+}
+static inline
+void b43legacy_pio_free(struct b43legacy_wldev *dev)
+{
+}
+static inline
+int b43legacy_pio_tx(struct b43legacy_wldev *dev,
+		   struct sk_buff *skb)
+{
+	return 0;
+}
+static inline
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_txstatus *status)
+{
+}
+static inline
+void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
+{
+}
+static inline
+void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
+{
+}
+
+#endif /* CONFIG_B43LEGACY_PIO */
+#endif /* B43legacy_PIO_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/radio.c b/drivers/net/wireless/broadcom/b43legacy/radio.c
new file mode 100644
index 000000000..fdf78c10a
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/radio.c
@@ -0,0 +1,2126 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <stefano.brivio@polimi.it>
+		     Michael Buesch <m@bues.ch>
+		     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.
+
+
+*/
+
+#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_MACCTL);
+	B43legacy_WARN_ON(status & B43legacy_MACCTL_RADIOLOCK);
+	status |= B43legacy_MACCTL_RADIOLOCK;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
+	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_MACCTL);
+	B43legacy_WARN_ON(!(status & B43legacy_MACCTL_RADIOLOCK));
+	status &= ~B43legacy_MACCTL_RADIOLOCK;
+	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
+}
+
+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);
+	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] = { 0 };
+	unsigned int channel = phy->channel;
+	unsigned int i;
+	unsigned int j;
+	unsigned int start;
+	unsigned int end;
+
+	if (!((phy->type == B43legacy_PHYTYPE_G) && (phy->rev > 0)))
+		return 0;
+
+	b43legacy_phy_lock(dev);
+	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) ? 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);
+
+	return ret[channel - 1];
+}
+
+/* https://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);
+	b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val);
+}
+
+/* https://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;
+}
+
+/* https://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 = clamp_val(tmp, -32, 31);
+		b43legacy_nrssi_hw_write(dev, i, tmp);
+	}
+}
+
+/* https://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 = clamp_val(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.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 = clamp_val(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.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 = clamp_val(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 = clamp_val(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 = true;
+
+		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 = false;
+
+		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 = false;
+	switch (mode) {
+	case B43legacy_RADIO_INTERFMODE_AUTOWLAN:
+		phy->aci_wlan_automatic = true;
+		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 = false;
+		phy->aci_hw_rssi = false;
+	} 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.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.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.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;
+}
+
+int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev,
+				  u8 channel,
+				  int synthetic_pu_workaround)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (channel == 0xFF) {
+		switch (phy->type) {
+		case B43legacy_PHYTYPE_B:
+		case B43legacy_PHYTYPE_G:
+			channel = B43legacy_RADIO_DEFAULT_CHANNEL_BG;
+			break;
+		default:
+			B43legacy_WARN_ON(1);
+		}
+	}
+
+/* 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.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 = clamp_val(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->sprom.board_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->sprom.board_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->sprom.board_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->sprom.board_rev < 0x43)
+			att = 2;
+		else if (dev->dev->bus->sprom.board_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;
+	u8 channel;
+
+	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));
+		if (phy->radio_off_context.valid) {
+			/* Restore the RFover values. */
+			b43legacy_phy_write(dev, B43legacy_PHY_RFOVER,
+					    phy->radio_off_context.rfover);
+			b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL,
+					    phy->radio_off_context.rfoverval);
+			phy->radio_off_context.valid = false;
+		}
+		channel = phy->channel;
+		err = b43legacy_radio_selectchannel(dev,
+					B43legacy_RADIO_DEFAULT_CHANNEL_BG, 1);
+		err |= b43legacy_radio_selectchannel(dev, channel, 0);
+		B43legacy_WARN_ON(err);
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+	phy->radio_on = true;
+}
+
+void b43legacy_radio_turn_off(struct b43legacy_wldev *dev, bool force)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+
+	if (!phy->radio_on && !force)
+		return;
+
+	if (phy->type == B43legacy_PHYTYPE_G && dev->dev->id.revision >= 5) {
+		u16 rfover, rfoverval;
+
+		rfover = b43legacy_phy_read(dev, B43legacy_PHY_RFOVER);
+		rfoverval = b43legacy_phy_read(dev, B43legacy_PHY_RFOVERVAL);
+		if (!force) {
+			phy->radio_off_context.rfover = rfover;
+			phy->radio_off_context.rfoverval = rfoverval;
+			phy->radio_off_context.valid = true;
+		}
+		b43legacy_phy_write(dev, B43legacy_PHY_RFOVER, rfover | 0x008C);
+		b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL,
+				    rfoverval & 0xFF73);
+	} else
+		b43legacy_phy_write(dev, 0x0015, 0xAA00);
+	phy->radio_on = false;
+	b43legacydbg(dev->wl, "Radio initialized\n");
+}
+
+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;
+	}
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/radio.h b/drivers/net/wireless/broadcom/b43legacy/radio.h
new file mode 100644
index 000000000..ee8b2c8d1
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/radio.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+		     Stefano Brivio <stefano.brivio@polimi.it>
+		     Michael Buesch <m@bues.ch>
+		     Danny van Dyk <kugelfang@gentoo.org>
+		     Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  Some parts of the code in this file are derived from the ipw2200
+  driver  Copyright(c) 2003 - 2004 Intel Corporation.
+
+
+*/
+
+#ifndef B43legacy_RADIO_H_
+#define B43legacy_RADIO_H_
+
+#include "b43legacy.h"
+
+
+#define B43legacy_RADIO_DEFAULT_CHANNEL_BG	6
+
+/* Force antenna 0. */
+#define B43legacy_RADIO_TXANTENNA_0		0
+/* Force antenna 1. */
+#define B43legacy_RADIO_TXANTENNA_1		1
+/* Use the RX antenna, that was selected for the most recently
+ * received good PLCP header.
+ */
+#define B43legacy_RADIO_TXANTENNA_LASTPLCP	3
+#define B43legacy_RADIO_TXANTENNA_DEFAULT	B43legacy_RADIO_TXANTENNA_LASTPLCP
+
+#define B43legacy_RADIO_INTERFMODE_NONE		0
+#define B43legacy_RADIO_INTERFMODE_NONWLAN	1
+#define B43legacy_RADIO_INTERFMODE_MANUALWLAN	2
+#define B43legacy_RADIO_INTERFMODE_AUTOWLAN	3
+
+
+void b43legacy_radio_lock(struct b43legacy_wldev *dev);
+void b43legacy_radio_unlock(struct b43legacy_wldev *dev);
+
+u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset);
+void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val);
+
+u16 b43legacy_radio_init2050(struct b43legacy_wldev *dev);
+
+void b43legacy_radio_turn_on(struct b43legacy_wldev *dev);
+void b43legacy_radio_turn_off(struct b43legacy_wldev *dev, bool force);
+
+int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev, u8 channel,
+				  int synthetic_pu_workaround);
+
+void b43legacy_radio_set_txpower_a(struct b43legacy_wldev *dev, u16 txpower);
+void b43legacy_radio_set_txpower_bg(struct b43legacy_wldev *dev,
+				    u16 baseband_attenuation, u16 attenuation,
+				    u16 txpower);
+
+u16 b43legacy_default_baseband_attenuation(struct b43legacy_wldev *dev);
+u16 b43legacy_default_radio_attenuation(struct b43legacy_wldev *dev);
+u16 b43legacy_default_txctl1(struct b43legacy_wldev *dev);
+
+void b43legacy_radio_set_txantenna(struct b43legacy_wldev *dev, u32 val);
+
+void b43legacy_radio_clear_tssi(struct b43legacy_wldev *dev);
+
+u8 b43legacy_radio_aci_detect(struct b43legacy_wldev *dev, u8 channel);
+u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev);
+
+int b43legacy_radio_set_interference_mitigation(struct b43legacy_wldev *dev,
+						int mode);
+
+void b43legacy_calc_nrssi_slope(struct b43legacy_wldev *dev);
+void b43legacy_calc_nrssi_threshold(struct b43legacy_wldev *dev);
+s16 b43legacy_nrssi_hw_read(struct b43legacy_wldev *dev, u16 offset);
+void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val);
+void b43legacy_nrssi_hw_update(struct b43legacy_wldev *dev, u16 val);
+void b43legacy_nrssi_mem_update(struct b43legacy_wldev *dev);
+
+u16 b43legacy_radio_calibrationvalue(struct b43legacy_wldev *dev);
+
+#endif /* B43legacy_RADIO_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/rfkill.c b/drivers/net/wireless/broadcom/b43legacy/rfkill.c
new file mode 100644
index 000000000..1f5321050
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/rfkill.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43 wireless driver
+  RFKILL support
+
+  Copyright (c) 2007 Michael Buesch <m@bues.ch>
+
+
+*/
+
+#include "radio.h"
+#include "b43legacy.h"
+
+
+/* Returns TRUE, if the radio is enabled in hardware. */
+bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev)
+{
+	if (dev->dev->id.revision >= 3) {
+		if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI)
+		      & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK))
+			return true;
+	} else {
+		/* To prevent CPU fault on PPC, do not read a register
+		 * unless the interface is started; however, on resume
+		 * for hibernation, this routine is entered early. When
+		 * that happens, unconditionally return TRUE.
+		 */
+		if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
+			return true;
+		if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO)
+		    & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK)
+			return true;
+	}
+	return false;
+}
+
+/* The poll callback for the hardware button. */
+void b43legacy_rfkill_poll(struct ieee80211_hw *hw)
+{
+	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+	struct b43legacy_wldev *dev = wl->current_dev;
+	struct ssb_bus *bus = dev->dev->bus;
+	bool enabled;
+	bool brought_up = false;
+
+	mutex_lock(&wl->mutex);
+	if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) {
+		if (ssb_bus_powerup(bus, 0)) {
+			mutex_unlock(&wl->mutex);
+			return;
+		}
+		ssb_device_enable(dev->dev, 0);
+		brought_up = true;
+	}
+
+	enabled = b43legacy_is_hw_radio_enabled(dev);
+
+	if (unlikely(enabled != dev->radio_hw_enable)) {
+		dev->radio_hw_enable = enabled;
+		b43legacyinfo(wl, "Radio hardware status changed to %s\n",
+			enabled ? "ENABLED" : "DISABLED");
+		wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
+		if (enabled != dev->phy.radio_on) {
+			if (enabled)
+				b43legacy_radio_turn_on(dev);
+			else
+				b43legacy_radio_turn_off(dev, 0);
+		}
+	}
+
+	if (brought_up) {
+		ssb_device_disable(dev->dev, 0);
+		ssb_bus_may_powerdown(bus);
+	}
+
+	mutex_unlock(&wl->mutex);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/rfkill.h b/drivers/net/wireless/broadcom/b43legacy/rfkill.h
new file mode 100644
index 000000000..7f314eb81
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/rfkill.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_RFKILL_H_
+#define B43legacy_RFKILL_H_
+
+struct ieee80211_hw;
+struct b43legacy_wldev;
+
+void b43legacy_rfkill_poll(struct ieee80211_hw *hw);
+
+bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev);
+
+#endif /* B43legacy_RFKILL_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/sysfs.c b/drivers/net/wireless/broadcom/b43legacy/sysfs.c
new file mode 100644
index 000000000..eec087ca3
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/sysfs.c
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  SYSFS support routines
+
+  Copyright (c) 2006 Michael Buesch <m@bues.ch>
+
+
+*/
+
+#include "sysfs.h"
+#include "b43legacy.h"
+#include "main.h"
+#include "phy.h"
+#include "radio.h"
+
+#include <linux/capability.h>
+
+
+#define GENERIC_FILESIZE	64
+
+
+static int get_integer(const char *buf, size_t count)
+{
+	char tmp[10 + 1] = { 0 };
+	int ret = -EINVAL, res;
+
+	if (count == 0)
+		goto out;
+	count = min_t(size_t, count, 10);
+	memcpy(tmp, buf, count);
+	ret = kstrtoint(tmp, 10, &res);
+	if (!ret)
+		return res;
+out:
+	return ret;
+}
+
+static int get_boolean(const char *buf, size_t count)
+{
+	if (count != 0) {
+		if (buf[0] == '1')
+			return 1;
+		if (buf[0] == '0')
+			return 0;
+		if (count >= 4 && memcmp(buf, "true", 4) == 0)
+			return 1;
+		if (count >= 5 && memcmp(buf, "false", 5) == 0)
+			return 0;
+		if (count >= 3 && memcmp(buf, "yes", 3) == 0)
+			return 1;
+		if (count >= 2 && memcmp(buf, "no", 2) == 0)
+			return 0;
+		if (count >= 2 && memcmp(buf, "on", 2) == 0)
+			return 1;
+		if (count >= 3 && memcmp(buf, "off", 3) == 0)
+			return 0;
+	}
+	return -EINVAL;
+}
+
+static ssize_t b43legacy_attr_interfmode_show(struct device *dev,
+					      struct device_attribute *attr,
+					      char *buf)
+{
+	struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
+	ssize_t count = 0;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	mutex_lock(&wldev->wl->mutex);
+
+	switch (wldev->phy.interfmode) {
+	case B43legacy_INTERFMODE_NONE:
+		count = snprintf(buf, PAGE_SIZE, "0 (No Interference"
+				 " Mitigation)\n");
+		break;
+	case B43legacy_INTERFMODE_NONWLAN:
+		count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference"
+				 " Mitigation)\n");
+		break;
+	case B43legacy_INTERFMODE_MANUALWLAN:
+		count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference"
+				 " Mitigation)\n");
+		break;
+	default:
+		B43legacy_WARN_ON(1);
+	}
+
+	mutex_unlock(&wldev->wl->mutex);
+
+	return count;
+}
+
+static ssize_t b43legacy_attr_interfmode_store(struct device *dev,
+					       struct device_attribute *attr,
+					       const char *buf, size_t count)
+{
+	struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
+	unsigned long flags;
+	int err;
+	int mode;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	mode = get_integer(buf, count);
+	switch (mode) {
+	case 0:
+		mode = B43legacy_INTERFMODE_NONE;
+		break;
+	case 1:
+		mode = B43legacy_INTERFMODE_NONWLAN;
+		break;
+	case 2:
+		mode = B43legacy_INTERFMODE_MANUALWLAN;
+		break;
+	case 3:
+		mode = B43legacy_INTERFMODE_AUTOWLAN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&wldev->wl->mutex);
+	spin_lock_irqsave(&wldev->wl->irq_lock, flags);
+
+	err = b43legacy_radio_set_interference_mitigation(wldev, mode);
+	if (err)
+		b43legacyerr(wldev->wl, "Interference Mitigation not "
+		       "supported by device\n");
+	spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
+	mutex_unlock(&wldev->wl->mutex);
+
+	return err ? err : count;
+}
+
+static DEVICE_ATTR(interference, 0644,
+		   b43legacy_attr_interfmode_show,
+		   b43legacy_attr_interfmode_store);
+
+static ssize_t b43legacy_attr_preamble_show(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf)
+{
+	struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
+	ssize_t count;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	mutex_lock(&wldev->wl->mutex);
+
+	if (wldev->short_preamble)
+		count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble"
+				 " enabled)\n");
+	else
+		count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble"
+				 " disabled)\n");
+
+	mutex_unlock(&wldev->wl->mutex);
+
+	return count;
+}
+
+static ssize_t b43legacy_attr_preamble_store(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t count)
+{
+	struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
+	unsigned long flags;
+	int value;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	value = get_boolean(buf, count);
+	if (value < 0)
+		return value;
+	mutex_lock(&wldev->wl->mutex);
+	spin_lock_irqsave(&wldev->wl->irq_lock, flags);
+
+	wldev->short_preamble = !!value;
+
+	spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
+	mutex_unlock(&wldev->wl->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(shortpreamble, 0644,
+		   b43legacy_attr_preamble_show,
+		   b43legacy_attr_preamble_store);
+
+int b43legacy_sysfs_register(struct b43legacy_wldev *wldev)
+{
+	struct device *dev = wldev->dev->dev;
+	int err;
+
+	B43legacy_WARN_ON(b43legacy_status(wldev) !=
+			  B43legacy_STAT_INITIALIZED);
+
+	err = device_create_file(dev, &dev_attr_interference);
+	if (err)
+		goto out;
+	err = device_create_file(dev, &dev_attr_shortpreamble);
+	if (err)
+		goto err_remove_interfmode;
+
+out:
+	return err;
+err_remove_interfmode:
+	device_remove_file(dev, &dev_attr_interference);
+	goto out;
+}
+
+void b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev)
+{
+	struct device *dev = wldev->dev->dev;
+
+	device_remove_file(dev, &dev_attr_shortpreamble);
+	device_remove_file(dev, &dev_attr_interference);
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/sysfs.h b/drivers/net/wireless/broadcom/b43legacy/sysfs.h
new file mode 100644
index 000000000..ea9d783e6
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/sysfs.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_SYSFS_H_
+#define B43legacy_SYSFS_H_
+
+struct b43legacy_wldev;
+
+int b43legacy_sysfs_register(struct b43legacy_wldev *dev);
+void b43legacy_sysfs_unregister(struct b43legacy_wldev *dev);
+
+#endif /* B43legacy_SYSFS_H_ */
diff --git a/drivers/net/wireless/broadcom/b43legacy/xmit.c b/drivers/net/wireless/broadcom/b43legacy/xmit.c
new file mode 100644
index 000000000..efd63f4ce
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/xmit.c
@@ -0,0 +1,652 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Transmission (TX/RX) related functions.
+
+  Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+  Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
+  Copyright (C) 2005, 2006 Michael Buesch <m@bues.ch>
+  Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+  Copyright (C) 2007 Larry Finger <Larry.Finger@lwfinger.net>
+
+
+*/
+
+#include <net/dst.h>
+
+#include "xmit.h"
+#include "phy.h"
+#include "dma.h"
+#include "pio.h"
+
+
+/* Extract the bitrate out of a CCK PLCP header. */
+static u8 b43legacy_plcp_get_bitrate_idx_cck(struct b43legacy_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0]) {
+	case 0x0A:
+		return 0;
+	case 0x14:
+		return 1;
+	case 0x37:
+		return 2;
+	case 0x6E:
+		return 3;
+	}
+	B43legacy_BUG_ON(1);
+	return -1;
+}
+
+/* Extract the bitrate out of an OFDM PLCP header. */
+static u8 b43legacy_plcp_get_bitrate_idx_ofdm(struct b43legacy_plcp_hdr6 *plcp,
+					      bool aphy)
+{
+	int base = aphy ? 0 : 4;
+
+	switch (plcp->raw[0] & 0xF) {
+	case 0xB:
+		return base + 0;
+	case 0xF:
+		return base + 1;
+	case 0xA:
+		return base + 2;
+	case 0xE:
+		return base + 3;
+	case 0x9:
+		return base + 4;
+	case 0xD:
+		return base + 5;
+	case 0x8:
+		return base + 6;
+	case 0xC:
+		return base + 7;
+	}
+	B43legacy_BUG_ON(1);
+	return -1;
+}
+
+u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_CCK_RATE_1MB:
+		return 0x0A;
+	case B43legacy_CCK_RATE_2MB:
+		return 0x14;
+	case B43legacy_CCK_RATE_5MB:
+		return 0x37;
+	case B43legacy_CCK_RATE_11MB:
+		return 0x6E;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_OFDM_RATE_6MB:
+		return 0xB;
+	case B43legacy_OFDM_RATE_9MB:
+		return 0xF;
+	case B43legacy_OFDM_RATE_12MB:
+		return 0xA;
+	case B43legacy_OFDM_RATE_18MB:
+		return 0xE;
+	case B43legacy_OFDM_RATE_24MB:
+		return 0x9;
+	case B43legacy_OFDM_RATE_36MB:
+		return 0xD;
+	case B43legacy_OFDM_RATE_48MB:
+		return 0x8;
+	case B43legacy_OFDM_RATE_54MB:
+		return 0xC;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp,
+				 const u16 octets, const u8 bitrate)
+{
+	__le32 *data = &(plcp->data);
+	__u8 *raw = plcp->raw;
+
+	if (b43legacy_is_ofdm_rate(bitrate)) {
+		u16 d;
+
+		d = b43legacy_plcp_get_ratecode_ofdm(bitrate);
+		B43legacy_WARN_ON(octets & 0xF000);
+		d |= (octets << 5);
+		*data = cpu_to_le32(d);
+	} else {
+		u32 plen;
+
+		plen = octets * 16 / bitrate;
+		if ((octets * 16 % bitrate) > 0) {
+			plen++;
+			if ((bitrate == B43legacy_CCK_RATE_11MB)
+			    && ((octets * 8 % 11) < 4))
+				raw[1] = 0x84;
+			else
+				raw[1] = 0x04;
+		} else
+			raw[1] = 0x04;
+		*data |= cpu_to_le32(plen << 16);
+		raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate);
+	}
+}
+
+static u8 b43legacy_calc_fallback_rate(u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_CCK_RATE_1MB:
+		return B43legacy_CCK_RATE_1MB;
+	case B43legacy_CCK_RATE_2MB:
+		return B43legacy_CCK_RATE_1MB;
+	case B43legacy_CCK_RATE_5MB:
+		return B43legacy_CCK_RATE_2MB;
+	case B43legacy_CCK_RATE_11MB:
+		return B43legacy_CCK_RATE_5MB;
+	case B43legacy_OFDM_RATE_6MB:
+		return B43legacy_CCK_RATE_5MB;
+	case B43legacy_OFDM_RATE_9MB:
+		return B43legacy_OFDM_RATE_6MB;
+	case B43legacy_OFDM_RATE_12MB:
+		return B43legacy_OFDM_RATE_9MB;
+	case B43legacy_OFDM_RATE_18MB:
+		return B43legacy_OFDM_RATE_12MB;
+	case B43legacy_OFDM_RATE_24MB:
+		return B43legacy_OFDM_RATE_18MB;
+	case B43legacy_OFDM_RATE_36MB:
+		return B43legacy_OFDM_RATE_24MB;
+	case B43legacy_OFDM_RATE_48MB:
+		return B43legacy_OFDM_RATE_36MB;
+	case B43legacy_OFDM_RATE_54MB:
+		return B43legacy_OFDM_RATE_48MB;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
+			       struct b43legacy_txhdr_fw3 *txhdr,
+			       const unsigned char *fragment_data,
+			       unsigned int fragment_len,
+			       struct ieee80211_tx_info *info,
+			       u16 cookie)
+{
+	const struct ieee80211_hdr *wlhdr;
+	int use_encryption = !!info->control.hw_key;
+	u8 rate;
+	struct ieee80211_rate *rate_fb;
+	int rate_ofdm;
+	int rate_fb_ofdm;
+	unsigned int plcp_fragment_len;
+	u32 mac_ctl = 0;
+	u16 phy_ctl = 0;
+	struct ieee80211_rate *tx_rate;
+	struct ieee80211_tx_rate *rates;
+
+	wlhdr = (const struct ieee80211_hdr *)fragment_data;
+
+	memset(txhdr, 0, sizeof(*txhdr));
+
+	tx_rate = ieee80211_get_tx_rate(dev->wl->hw, info);
+
+	rate = tx_rate->hw_value;
+	rate_ofdm = b43legacy_is_ofdm_rate(rate);
+	rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : tx_rate;
+	rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value);
+
+	txhdr->mac_frame_ctl = wlhdr->frame_control;
+	memcpy(txhdr->tx_receiver, wlhdr->addr1, ETH_ALEN);
+
+	/* Calculate duration for fallback rate */
+	if ((rate_fb->hw_value == rate) ||
+	    (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
+	    (wlhdr->duration_id == cpu_to_le16(0))) {
+		/* If the fallback rate equals the normal rate or the
+		 * dur_id field contains an AID, CFP magic or 0,
+		 * use the original dur_id field. */
+		txhdr->dur_fb = wlhdr->duration_id;
+	} else {
+		txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
+							 info->control.vif,
+							 info->band,
+							 fragment_len,
+							 rate_fb);
+	}
+
+	plcp_fragment_len = fragment_len + FCS_LEN;
+	if (use_encryption) {
+		u8 key_idx = info->control.hw_key->hw_key_idx;
+		struct b43legacy_key *key;
+		int wlhdr_len;
+		size_t iv_len;
+
+		B43legacy_WARN_ON(key_idx >= dev->max_nr_keys);
+		key = &(dev->key[key_idx]);
+
+		if (key->enabled) {
+			/* Hardware appends ICV. */
+			plcp_fragment_len += info->control.hw_key->icv_len;
+
+			key_idx = b43legacy_kidx_to_fw(dev, key_idx);
+			mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) &
+				   B43legacy_TX4_MAC_KEYIDX;
+			mac_ctl |= (key->algorithm <<
+				   B43legacy_TX4_MAC_KEYALG_SHIFT) &
+				   B43legacy_TX4_MAC_KEYALG;
+			wlhdr_len = ieee80211_hdrlen(wlhdr->frame_control);
+			iv_len = min_t(size_t, info->control.hw_key->iv_len,
+				     ARRAY_SIZE(txhdr->iv));
+			memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len);
+		} else {
+			/* This key is invalid. This might only happen
+			 * in a short timeframe after machine resume before
+			 * we were able to reconfigure keys.
+			 * Drop this packet completely. Do not transmit it
+			 * unencrypted to avoid leaking information. */
+			return -ENOKEY;
+		}
+	}
+	b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+				    (&txhdr->plcp), plcp_fragment_len,
+				    rate);
+	b43legacy_generate_plcp_hdr(&txhdr->plcp_fb, plcp_fragment_len,
+				    rate_fb->hw_value);
+
+	/* PHY TX Control word */
+	if (rate_ofdm)
+		phy_ctl |= B43legacy_TX4_PHY_ENC_OFDM;
+	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+		phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL;
+	phy_ctl |= B43legacy_TX4_PHY_ANTLAST;
+
+	/* MAC control */
+	rates = info->control.rates;
+	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
+		mac_ctl |= B43legacy_TX4_MAC_ACK;
+	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
+		mac_ctl |= B43legacy_TX4_MAC_HWSEQ;
+	if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+		mac_ctl |= B43legacy_TX4_MAC_STMSDU;
+	if (rate_fb_ofdm)
+		mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM;
+
+	/* Overwrite rates[0].count to make the retry calculation
+	 * in the tx status easier. need the actual retry limit to
+	 * detect whether the fallback rate was used.
+	 */
+	if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+	    (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
+		rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
+		mac_ctl |= B43legacy_TX4_MAC_LONGFRAME;
+	} else {
+		rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
+	}
+
+	/* Generate the RTS or CTS-to-self frame */
+	if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+	    (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
+		unsigned int len;
+		struct ieee80211_hdr *hdr;
+		int rts_rate;
+		int rts_rate_fb;
+		int rts_rate_fb_ofdm;
+
+		rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info)->hw_value;
+		rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate);
+		rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb);
+		if (rts_rate_fb_ofdm)
+			mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM;
+
+		if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
+			ieee80211_ctstoself_get(dev->wl->hw,
+						info->control.vif,
+						fragment_data,
+						fragment_len, info,
+						(struct ieee80211_cts *)
+						(txhdr->rts_frame));
+			mac_ctl |= B43legacy_TX4_MAC_SENDCTS;
+			len = sizeof(struct ieee80211_cts);
+		} else {
+			ieee80211_rts_get(dev->wl->hw,
+					  info->control.vif,
+					  fragment_data, fragment_len, info,
+					  (struct ieee80211_rts *)
+					  (txhdr->rts_frame));
+			mac_ctl |= B43legacy_TX4_MAC_SENDRTS;
+			len = sizeof(struct ieee80211_rts);
+		}
+		len += FCS_LEN;
+		b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+					    (&txhdr->rts_plcp),
+					    len, rts_rate);
+		b43legacy_generate_plcp_hdr(&txhdr->rts_plcp_fb,
+					    len, rts_rate_fb);
+		hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
+		txhdr->rts_dur_fb = hdr->duration_id;
+	}
+
+	/* Magic cookie */
+	txhdr->cookie = cpu_to_le16(cookie);
+
+	/* Apply the bitfields */
+	txhdr->mac_ctl = cpu_to_le32(mac_ctl);
+	txhdr->phy_ctl = cpu_to_le16(phy_ctl);
+
+	return 0;
+}
+
+int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
+			      u8 *txhdr,
+			      const unsigned char *fragment_data,
+			      unsigned int fragment_len,
+			      struct ieee80211_tx_info *info,
+			      u16 cookie)
+{
+	return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr,
+			   fragment_data, fragment_len,
+			   info, cookie);
+}
+
+static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev,
+				     u8 in_rssi, int ofdm,
+				     int adjust_2053, int adjust_2050)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s32 tmp;
+
+	switch (phy->radio_ver) {
+	case 0x2050:
+		if (ofdm) {
+			tmp = in_rssi;
+			if (tmp > 127)
+				tmp -= 256;
+			tmp *= 73;
+			tmp /= 64;
+			if (adjust_2050)
+				tmp += 25;
+			else
+				tmp -= 3;
+		} else {
+			if (dev->dev->bus->sprom.boardflags_lo
+			    & B43legacy_BFL_RSSI) {
+				if (in_rssi > 63)
+					in_rssi = 63;
+				tmp = phy->nrssi_lt[in_rssi];
+				tmp = 31 - tmp;
+				tmp *= -131;
+				tmp /= 128;
+				tmp -= 57;
+			} else {
+				tmp = in_rssi;
+				tmp = 31 - tmp;
+				tmp *= -149;
+				tmp /= 128;
+				tmp -= 68;
+			}
+			if (phy->type == B43legacy_PHYTYPE_G &&
+			    adjust_2050)
+				tmp += 25;
+		}
+		break;
+	case 0x2060:
+		if (in_rssi > 127)
+			tmp = in_rssi - 256;
+		else
+			tmp = in_rssi;
+		break;
+	default:
+		tmp = in_rssi;
+		tmp -= 11;
+		tmp *= 103;
+		tmp /= 64;
+		if (adjust_2053)
+			tmp -= 109;
+		else
+			tmp -= 83;
+	}
+
+	return (s8)tmp;
+}
+
+void b43legacy_rx(struct b43legacy_wldev *dev,
+		  struct sk_buff *skb,
+		  const void *_rxhdr)
+{
+	struct ieee80211_rx_status status;
+	struct b43legacy_plcp_hdr6 *plcp;
+	struct ieee80211_hdr *wlhdr;
+	const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr;
+	__le16 fctl;
+	u16 phystat0;
+	u16 phystat3;
+	u16 chanstat;
+	u16 mactime;
+	u32 macstat;
+	u16 chanid;
+	u8 jssi;
+	int padding;
+
+	memset(&status, 0, sizeof(status));
+
+	/* Get metadata about the frame from the header. */
+	phystat0 = le16_to_cpu(rxhdr->phy_status0);
+	phystat3 = le16_to_cpu(rxhdr->phy_status3);
+	jssi = rxhdr->jssi;
+	macstat = le16_to_cpu(rxhdr->mac_status);
+	mactime = le16_to_cpu(rxhdr->mac_time);
+	chanstat = le16_to_cpu(rxhdr->channel);
+
+	if (macstat & B43legacy_RX_MAC_FCSERR)
+		dev->wl->ieee_stats.dot11FCSErrorCount++;
+
+	/* Skip PLCP and padding */
+	padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0;
+	if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) +
+	    padding))) {
+		b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n");
+		goto drop;
+	}
+	plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding);
+	skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding);
+	/* The skb contains the Wireless Header + payload data now */
+	if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) {
+		b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n");
+		goto drop;
+	}
+	wlhdr = (struct ieee80211_hdr *)(skb->data);
+	fctl = wlhdr->frame_control;
+
+	if ((macstat & B43legacy_RX_MAC_DEC) &&
+	    !(macstat & B43legacy_RX_MAC_DECERR)) {
+		unsigned int keyidx;
+		int wlhdr_len;
+		int iv_len;
+		int icv_len;
+
+		keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX)
+			  >> B43legacy_RX_MAC_KEYIDX_SHIFT);
+		/* We must adjust the key index here. We want the "physical"
+		 * key index, but the ucode passed it slightly different.
+		 */
+		keyidx = b43legacy_kidx_to_raw(dev, keyidx);
+		B43legacy_WARN_ON(keyidx >= dev->max_nr_keys);
+
+		if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) {
+			/* Remove PROTECTED flag to mark it as decrypted. */
+			B43legacy_WARN_ON(!ieee80211_has_protected(fctl));
+			fctl &= ~cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+			wlhdr->frame_control = fctl;
+
+			wlhdr_len = ieee80211_hdrlen(fctl);
+			if (unlikely(skb->len < (wlhdr_len + 3))) {
+				b43legacydbg(dev->wl, "RX: Packet size"
+					     " underrun3\n");
+				goto drop;
+			}
+			if (skb->data[wlhdr_len + 3] & (1 << 5)) {
+				/* The Ext-IV Bit is set in the "KeyID"
+				 * octet of the IV.
+				 */
+				iv_len = 8;
+				icv_len = 8;
+			} else {
+				iv_len = 4;
+				icv_len = 4;
+			}
+			if (unlikely(skb->len < (wlhdr_len + iv_len +
+			    icv_len))) {
+				b43legacydbg(dev->wl, "RX: Packet size"
+					     " underrun4\n");
+				goto drop;
+			}
+			/* Remove the IV */
+			memmove(skb->data + iv_len, skb->data, wlhdr_len);
+			skb_pull(skb, iv_len);
+			/* Remove the ICV */
+			skb_trim(skb, skb->len - icv_len);
+
+			status.flag |= RX_FLAG_DECRYPTED;
+		}
+	}
+
+	status.signal = b43legacy_rssi_postprocess(dev, jssi,
+				      (phystat0 & B43legacy_RX_PHYST0_OFDM),
+				      (phystat0 & B43legacy_RX_PHYST0_GAINCTL),
+				      (phystat3 & B43legacy_RX_PHYST3_TRSTATE));
+	/* change to support A PHY */
+	if (phystat0 & B43legacy_RX_PHYST0_OFDM)
+		status.rate_idx = b43legacy_plcp_get_bitrate_idx_ofdm(plcp, false);
+	else
+		status.rate_idx = b43legacy_plcp_get_bitrate_idx_cck(plcp);
+	status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT);
+
+	/*
+	 * All frames on monitor interfaces and beacons always need a full
+	 * 64-bit timestamp. Monitor interfaces need it for diagnostic
+	 * purposes and beacons for IBSS merging.
+	 * This code assumes we get to process the packet within 16 bits
+	 * of timestamp, i.e. about 65 milliseconds after the PHY received
+	 * the first symbol.
+	 */
+	if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) {
+		u16 low_mactime_now;
+
+		b43legacy_tsf_read(dev, &status.mactime);
+		low_mactime_now = status.mactime;
+		status.mactime = status.mactime & ~0xFFFFULL;
+		status.mactime += mactime;
+		if (low_mactime_now <= mactime)
+			status.mactime -= 0x10000;
+		status.flag |= RX_FLAG_MACTIME_START;
+	}
+
+	chanid = (chanstat & B43legacy_RX_CHAN_ID) >>
+		  B43legacy_RX_CHAN_ID_SHIFT;
+	switch (chanstat & B43legacy_RX_CHAN_PHYTYPE) {
+	case B43legacy_PHYTYPE_B:
+	case B43legacy_PHYTYPE_G:
+		status.band = NL80211_BAND_2GHZ;
+		status.freq = chanid + 2400;
+		break;
+	default:
+		b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n",
+		       chanstat);
+		goto drop;
+	}
+
+	memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
+	ieee80211_rx_irqsafe(dev->wl->hw, skb);
+
+	return;
+drop:
+	b43legacydbg(dev->wl, "RX: Packet dropped\n");
+	dev_kfree_skb_any(skb);
+}
+
+void b43legacy_handle_txstatus(struct b43legacy_wldev *dev,
+			     const struct b43legacy_txstatus *status)
+{
+	b43legacy_debugfs_log_txstat(dev, status);
+
+	if (status->intermediate)
+		return;
+	if (status->for_ampdu)
+		return;
+	if (!status->acked)
+		dev->wl->ieee_stats.dot11ACKFailureCount++;
+	if (status->rts_count) {
+		if (status->rts_count == 0xF) /* FIXME */
+			dev->wl->ieee_stats.dot11RTSFailureCount++;
+		else
+			dev->wl->ieee_stats.dot11RTSSuccessCount++;
+	}
+
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_handle_txstatus(dev, status);
+	else
+		b43legacy_dma_handle_txstatus(dev, status);
+}
+
+/* Handle TX status report as received through DMA/PIO queues */
+void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_hwtxstatus *hw)
+{
+	struct b43legacy_txstatus status;
+	u8 tmp;
+
+	status.cookie = le16_to_cpu(hw->cookie);
+	status.seq = le16_to_cpu(hw->seq);
+	status.phy_stat = hw->phy_stat;
+	tmp = hw->count;
+	status.frame_count = (tmp >> 4);
+	status.rts_count = (tmp & 0x0F);
+	tmp = hw->flags << 1;
+	status.supp_reason = ((tmp & 0x1C) >> 2);
+	status.pm_indicated = !!(tmp & 0x80);
+	status.intermediate = !!(tmp & 0x40);
+	status.for_ampdu = !!(tmp & 0x20);
+	status.acked = !!(tmp & 0x02);
+
+	b43legacy_handle_txstatus(dev, &status);
+}
+
+/* Stop any TX operation on the device (suspend the hardware queues) */
+void b43legacy_tx_suspend(struct b43legacy_wldev *dev)
+{
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_freeze_txqueues(dev);
+	else
+		b43legacy_dma_tx_suspend(dev);
+}
+
+/* Resume any TX operation on the device (resume the hardware queues) */
+void b43legacy_tx_resume(struct b43legacy_wldev *dev)
+{
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_thaw_txqueues(dev);
+	else
+		b43legacy_dma_tx_resume(dev);
+}
+
+/* Initialize the QoS parameters */
+void b43legacy_qos_init(struct b43legacy_wldev *dev)
+{
+	/* FIXME: This function must probably be called from the mac80211
+	 * config callback. */
+return;
+
+	b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF);
+	/* FIXME kill magic */
+	b43legacy_write16(dev, 0x688,
+			  b43legacy_read16(dev, 0x688) | 0x4);
+
+
+	/*TODO: We might need some stack support here to get the values. */
+}
diff --git a/drivers/net/wireless/broadcom/b43legacy/xmit.h b/drivers/net/wireless/broadcom/b43legacy/xmit.h
new file mode 100644
index 000000000..e4ef869f0
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/xmit.h
@@ -0,0 +1,262 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef B43legacy_XMIT_H_
+#define B43legacy_XMIT_H_
+
+#include "main.h"
+
+
+#define _b43legacy_declare_plcp_hdr(size)	\
+	struct b43legacy_plcp_hdr##size {	\
+		union {				\
+			__le32 data;		\
+			__u8 raw[size];		\
+		} __packed;	\
+	} __packed
+
+/* struct b43legacy_plcp_hdr4 */
+_b43legacy_declare_plcp_hdr(4);
+/* struct b43legacy_plcp_hdr6 */
+_b43legacy_declare_plcp_hdr(6);
+
+#undef _b43legacy_declare_plcp_hdr
+
+
+/* TX header for v3 firmware */
+struct b43legacy_txhdr_fw3 {
+	__le32 mac_ctl;				/* MAC TX control */
+	__le16 mac_frame_ctl;			/* Copy of the FrameControl */
+	__le16 tx_fes_time_norm;		/* TX FES Time Normal */
+	__le16 phy_ctl;				/* PHY TX control */
+	__u8 iv[16];				/* Encryption IV */
+	__u8 tx_receiver[6];			/* TX Frame Receiver address */
+	__le16 tx_fes_time_fb;			/* TX FES Time Fallback */
+	struct b43legacy_plcp_hdr4 rts_plcp_fb;	/* RTS fallback PLCP */
+	__le16 rts_dur_fb;			/* RTS fallback duration */
+	struct b43legacy_plcp_hdr4 plcp_fb;	/* Fallback PLCP */
+	__le16 dur_fb;				/* Fallback duration */
+	PAD_BYTES(2);
+	__le16 cookie;
+	__le16 unknown_scb_stuff;
+	struct b43legacy_plcp_hdr6 rts_plcp;	/* RTS PLCP */
+	__u8 rts_frame[18];			/* The RTS frame (if used) */
+	struct b43legacy_plcp_hdr6 plcp;
+} __packed;
+
+/* MAC TX control */
+#define B43legacy_TX4_MAC_KEYIDX	0x0FF00000 /* Security key index */
+#define B43legacy_TX4_MAC_KEYIDX_SHIFT	20
+#define B43legacy_TX4_MAC_KEYALG	0x00070000 /* Security key algorithm */
+#define B43legacy_TX4_MAC_KEYALG_SHIFT	16
+#define B43legacy_TX4_MAC_LIFETIME	0x00001000
+#define B43legacy_TX4_MAC_FRAMEBURST	0x00000800
+#define B43legacy_TX4_MAC_SENDCTS	0x00000400
+#define B43legacy_TX4_MAC_AMPDU		0x00000300
+#define B43legacy_TX4_MAC_AMPDU_SHIFT	8
+#define B43legacy_TX4_MAC_CTSFALLBACKOFDM	0x00000200
+#define B43legacy_TX4_MAC_FALLBACKOFDM	0x00000100
+#define B43legacy_TX4_MAC_5GHZ		0x00000080
+#define B43legacy_TX4_MAC_IGNPMQ	0x00000020
+#define B43legacy_TX4_MAC_HWSEQ		0x00000010 /* Use Hardware Seq No */
+#define B43legacy_TX4_MAC_STMSDU	0x00000008 /* Start MSDU */
+#define B43legacy_TX4_MAC_SENDRTS	0x00000004
+#define B43legacy_TX4_MAC_LONGFRAME	0x00000002
+#define B43legacy_TX4_MAC_ACK		0x00000001
+
+/* Extra Frame Types */
+#define B43legacy_TX4_EFT_FBOFDM	0x0001 /* Data frame fb rate type */
+#define B43legacy_TX4_EFT_RTSOFDM	0x0004 /* RTS/CTS rate type */
+#define B43legacy_TX4_EFT_RTSFBOFDM	0x0010 /* RTS/CTS fallback rate type */
+
+/* PHY TX control word */
+#define B43legacy_TX4_PHY_ENC		0x0003 /* Data frame encoding */
+#define B43legacy_TX4_PHY_ENC_CCK	0x0000 /* CCK */
+#define B43legacy_TX4_PHY_ENC_OFDM	0x0001 /* Data frame rate type */
+#define B43legacy_TX4_PHY_SHORTPRMBL	0x0010 /* Use short preamble */
+#define B43legacy_TX4_PHY_ANT		0x03C0 /* Antenna selection */
+#define  B43legacy_TX4_PHY_ANT0		0x0000 /* Use antenna 0 */
+#define  B43legacy_TX4_PHY_ANT1		0x0100 /* Use antenna 1 */
+#define  B43legacy_TX4_PHY_ANTLAST	0x0300 /* Use last used antenna */
+
+
+
+int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
+			      u8 *txhdr,
+			      const unsigned char *fragment_data,
+			      unsigned int fragment_len,
+			      struct ieee80211_tx_info *info,
+			      u16 cookie);
+
+
+/* Transmit Status */
+struct b43legacy_txstatus {
+	u16 cookie;	/* The cookie from the txhdr */
+	u16 seq;	/* Sequence number */
+	u8 phy_stat;	/* PHY TX status */
+	u8 frame_count;	/* Frame transmit count */
+	u8 rts_count;	/* RTS transmit count */
+	u8 supp_reason;	/* Suppression reason */
+	/* flags */
+	u8 pm_indicated;/* PM mode indicated to AP */
+	u8 intermediate;/* Intermediate status notification */
+	u8 for_ampdu;	/* Status is for an AMPDU (afterburner) */
+	u8 acked;	/* Wireless ACK received */
+};
+
+/* txstatus supp_reason values */
+enum {
+	B43legacy_TXST_SUPP_NONE,	/* Not suppressed */
+	B43legacy_TXST_SUPP_PMQ,	/* Suppressed due to PMQ entry */
+	B43legacy_TXST_SUPP_FLUSH,	/* Suppressed due to flush request */
+	B43legacy_TXST_SUPP_PREV,	/* Previous fragment failed */
+	B43legacy_TXST_SUPP_CHAN,	/* Channel mismatch */
+	B43legacy_TXST_SUPP_LIFE,	/* Lifetime expired */
+	B43legacy_TXST_SUPP_UNDER,	/* Buffer underflow */
+	B43legacy_TXST_SUPP_ABNACK,	/* Afterburner NACK */
+};
+
+/* Transmit Status as received through DMA/PIO on old chips */
+struct b43legacy_hwtxstatus {
+	PAD_BYTES(4);
+	__le16 cookie;
+	u8 flags;
+	u8 count;
+	PAD_BYTES(2);
+	__le16 seq;
+	u8 phy_stat;
+	PAD_BYTES(1);
+} __packed;
+
+
+/* Receive header for v3 firmware. */
+struct b43legacy_rxhdr_fw3 {
+	__le16 frame_len;	/* Frame length */
+	PAD_BYTES(2);
+	__le16 phy_status0;	/* PHY RX Status 0 */
+	__u8 jssi;		/* PHY RX Status 1: JSSI */
+	__u8 sig_qual;		/* PHY RX Status 1: Signal Quality */
+	PAD_BYTES(2);		/* PHY RX Status 2 */
+	__le16 phy_status3;	/* PHY RX Status 3 */
+	__le16 mac_status;	/* MAC RX status */
+	__le16 mac_time;
+	__le16 channel;
+} __packed;
+
+
+/* PHY RX Status 0 */
+#define B43legacy_RX_PHYST0_GAINCTL	0x4000 /* Gain Control */
+#define B43legacy_RX_PHYST0_PLCPHCF	0x0200
+#define B43legacy_RX_PHYST0_PLCPFV	0x0100
+#define B43legacy_RX_PHYST0_SHORTPRMBL	0x0080 /* Recvd with Short Preamble */
+#define B43legacy_RX_PHYST0_LCRS	0x0040
+#define B43legacy_RX_PHYST0_ANT		0x0020 /* Antenna */
+#define B43legacy_RX_PHYST0_UNSRATE	0x0010
+#define B43legacy_RX_PHYST0_CLIP	0x000C
+#define B43legacy_RX_PHYST0_CLIP_SHIFT	2
+#define B43legacy_RX_PHYST0_FTYPE	0x0003 /* Frame type */
+#define  B43legacy_RX_PHYST0_CCK	0x0000 /* Frame type: CCK */
+#define  B43legacy_RX_PHYST0_OFDM	0x0001 /* Frame type: OFDM */
+#define  B43legacy_RX_PHYST0_PRE_N	0x0002 /* Pre-standard N-PHY frame */
+#define  B43legacy_RX_PHYST0_STD_N	0x0003 /* Standard N-PHY frame */
+
+/* PHY RX Status 2 */
+#define B43legacy_RX_PHYST2_LNAG	0xC000 /* LNA Gain */
+#define B43legacy_RX_PHYST2_LNAG_SHIFT	14
+#define B43legacy_RX_PHYST2_PNAG	0x3C00 /* PNA Gain */
+#define B43legacy_RX_PHYST2_PNAG_SHIFT	10
+#define B43legacy_RX_PHYST2_FOFF	0x03FF /* F offset */
+
+/* PHY RX Status 3 */
+#define B43legacy_RX_PHYST3_DIGG	0x1800 /* DIG Gain */
+#define B43legacy_RX_PHYST3_DIGG_SHIFT	11
+#define B43legacy_RX_PHYST3_TRSTATE	0x0400 /* TR state */
+
+/* MAC RX Status */
+#define B43legacy_RX_MAC_BEACONSENT	0x00008000 /* Beacon send flag */
+#define B43legacy_RX_MAC_KEYIDX		0x000007E0 /* Key index */
+#define B43legacy_RX_MAC_KEYIDX_SHIFT	5
+#define B43legacy_RX_MAC_DECERR		0x00000010 /* Decrypt error */
+#define B43legacy_RX_MAC_DEC		0x00000008 /* Decryption attempted */
+#define B43legacy_RX_MAC_PADDING	0x00000004 /* Pad bytes present */
+#define B43legacy_RX_MAC_RESP		0x00000002 /* Response frame xmitted */
+#define B43legacy_RX_MAC_FCSERR		0x00000001 /* FCS error */
+
+/* RX channel */
+#define B43legacy_RX_CHAN_GAIN		0xFC00 /* Gain */
+#define B43legacy_RX_CHAN_GAIN_SHIFT	10
+#define B43legacy_RX_CHAN_ID		0x03FC /* Channel ID */
+#define B43legacy_RX_CHAN_ID_SHIFT	2
+#define B43legacy_RX_CHAN_PHYTYPE	0x0003 /* PHY type */
+
+
+
+u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate);
+u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate);
+
+void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp,
+			       const u16 octets, const u8 bitrate);
+
+void b43legacy_rx(struct b43legacy_wldev *dev,
+		struct sk_buff *skb,
+		const void *_rxhdr);
+
+void b43legacy_handle_txstatus(struct b43legacy_wldev *dev,
+			       const struct b43legacy_txstatus *status);
+
+void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_hwtxstatus *hw);
+
+void b43legacy_tx_suspend(struct b43legacy_wldev *dev);
+void b43legacy_tx_resume(struct b43legacy_wldev *dev);
+
+
+#define B43legacy_NR_QOSPARMS	22
+enum {
+	B43legacy_QOSPARM_TXOP = 0,
+	B43legacy_QOSPARM_CWMIN,
+	B43legacy_QOSPARM_CWMAX,
+	B43legacy_QOSPARM_CWCUR,
+	B43legacy_QOSPARM_AIFS,
+	B43legacy_QOSPARM_BSLOTS,
+	B43legacy_QOSPARM_REGGAP,
+	B43legacy_QOSPARM_STATUS,
+};
+
+void b43legacy_qos_init(struct b43legacy_wldev *dev);
+
+
+/* Helper functions for converting the key-table index from "firmware-format"
+ * to "raw-format" and back. The firmware API changed for this at some revision.
+ * We need to account for that here. */
+static inline
+int b43legacy_new_kidx_api(struct b43legacy_wldev *dev)
+{
+	/* FIXME: Not sure the change was at rev 351 */
+	return (dev->fw.rev >= 351);
+}
+static inline
+u8 b43legacy_kidx_to_fw(struct b43legacy_wldev *dev, u8 raw_kidx)
+{
+	u8 firmware_kidx;
+	if (b43legacy_new_kidx_api(dev))
+		firmware_kidx = raw_kidx;
+	else {
+		if (raw_kidx >= 4) /* Is per STA key? */
+			firmware_kidx = raw_kidx - 4;
+		else
+			firmware_kidx = raw_kidx; /* TX default key */
+	}
+	return firmware_kidx;
+}
+static inline
+u8 b43legacy_kidx_to_raw(struct b43legacy_wldev *dev, u8 firmware_kidx)
+{
+	u8 raw_kidx;
+	if (b43legacy_new_kidx_api(dev))
+		raw_kidx = firmware_kidx;
+	else
+		/* RX default keys or per STA keys */
+		raw_kidx = firmware_kidx + 4;
+	return raw_kidx;
+}
+
+#endif /* B43legacy_XMIT_H_ */