[B43]: add mac80211-based driver for modern BCM43xx devices

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -795,6 +795,15 @@ L:	linux-hams@vger.kernel.org
 W:	http://www.baycom.org/~tom/ham/ham.html
 S:	Maintained
 
+B43 WIRELESS DRIVER
+P:	Michael Buesch
+M:	mb@bu3sch.de
+P:	Stefano Brivio
+M:	st3@riseup.net
+L:	linux-wireless@vger.kernel.org
+W:	http://bcm43xx.berlios.de/
+S:	Maintained
+
 BCM43XX WIRELESS DRIVER (SOFTMAC BASED VERSION)
 P:	Larry Finger
 M:	Larry.Finger@lwfinger.net

drivers/net/wireless/Kconfig

@@ -579,6 +579,7 @@ config ADM8211
 
 source "drivers/net/wireless/hostap/Kconfig"
 source "drivers/net/wireless/bcm43xx/Kconfig"
+source "drivers/net/wireless/b43/Kconfig"
 source "drivers/net/wireless/zd1211rw/Kconfig"
 
 endmenu

drivers/net/wireless/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_PRISM54)		+= prism54/
 
 obj-$(CONFIG_HOSTAP)		+= hostap/
 obj-$(CONFIG_BCM43XX)		+= bcm43xx/
+obj-$(CONFIG_B43)		+= b43/
 obj-$(CONFIG_ZD1211RW)		+= zd1211rw/
 
 # 16-bit wireless PCMCIA client drivers

drivers/net/wireless/b43/Kconfig

+config B43
+	tristate "Broadcom 43xx wireless support (mac80211 stack)"
+	depends on SSB_POSSIBLE && MAC80211 && WLAN_80211
+	select SSB
+	select FW_LOADER
+	select HW_RANDOM
+	---help---
+	  b43 is a driver for the Broadcom 43xx series wireless devices.
+
+	  Check "lspci" for something like
+	  "Broadcom Corporation BCM43XX 802.11 Wireless LAN Controller"
+	  to determine whether you own such a device.
+
+	  This driver supports the new BCM43xx IEEE 802.11G devices, but not
+	  the old IEEE 802.11B devices. Old devices are supported by
+	  the b43legacy driver.
+	  Note that this has nothing to do with the standard that your AccessPoint
+	  supports (A, B, G or a combination).
+	  IEEE 802.11G devices can talk to IEEE 802.11B AccessPoints.
+
+	  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 V4 firmware, which must be installed separately using
+	  b43-fwcutter.
+
+	  This driver can be built as a module (recommended) that will be called "b43".
+	  If unsure, say M.
+
+# Auto-select SSB PCI-HOST support, if possible
+config B43_PCI_AUTOSELECT
+	bool
+	depends on B43 && SSB_PCIHOST_POSSIBLE
+	select SSB_PCIHOST
+	default y
+
+# Auto-select SSB PCICORE driver, if possible
+config B43_PCICORE_AUTOSELECT
+	bool
+	depends on B43 && SSB_DRIVER_PCICORE_POSSIBLE
+	select SSB_DRIVER_PCICORE
+	default y
+
+config B43_PCMCIA
+	bool "Broadcom 43xx PCMCIA device support (EXPERIMENTAL)"
+	depends on B43 && SSB_PCMCIAHOST_POSSIBLE && EXPERIMENTAL
+	select SSB_PCMCIAHOST
+	---help---
+	  Broadcom 43xx PCMCIA device support.
+
+	  Support for 16bit PCMCIA devices.
+	  Please note that most PC-CARD devices are _NOT_ 16bit PCMCIA
+	  devices, but 32bit CardBUS devices. CardBUS devices are supported
+	  out of the box by b43.
+
+	  With this config option you can drive b43 cards in
+	  CompactFlash formfactor in a PCMCIA adaptor.
+	  CF b43 cards can sometimes be found in handheld PCs.
+
+	  It's safe to select Y here, even if you don't have a B43 PCMCIA device.
+
+	  If unsure, say N.
+
+config B43_DEBUG
+	bool "Broadcom 43xx debugging"
+	depends on B43
+	---help---
+	  Broadcom 43xx debugging messages.
+
+	  Say Y, if you want to find out why the driver does not
+	  work for you.
+
+config B43_DMA
+	bool
+	depends on B43
+config B43_PIO
+	bool
+	depends on B43
+
+choice
+	prompt "Broadcom 43xx data transfer mode"
+	depends on B43
+	default B43_DMA_AND_PIO_MODE
+
+config B43_DMA_AND_PIO_MODE
+	bool "DMA + PIO"
+	select B43_DMA
+	select B43_PIO
+	---help---
+	  Include both, Direct Memory Access (DMA) and Programmed I/O (PIO)
+	  data transfer modes.
+	  The actually used mode is selectable through the module
+	  parameter "pio". If the module parameter is pio=0, DMA is used.
+	  Otherwise PIO is used. DMA is default.
+
+	  If unsure, choose this option.
+
+config B43_DMA_MODE
+	bool "DMA (Direct Memory Access) only"
+	select B43_DMA
+	---help---
+	  Only include Direct Memory Access (DMA).
+	  This reduces the size of the driver module, by omitting the PIO code.
+
+config B43_PIO_MODE
+	bool "PIO (Programmed I/O) only"
+	select B43_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 43xx series support PIO.
+	  The 4306 (Apple Airport Extreme and others) supports PIO, while
+	  the 4318 is known to _not_ support PIO.
+
+	  Only use PIO, if DMA does not work for you.
+
+endchoice

drivers/net/wireless/b43/Makefile

+# b43 core
+b43-y				+= main.o
+b43-y				+= tables.o
+b43-y				+= phy.o
+b43-y				+= sysfs.o
+b43-y				+= leds.o
+b43-y				+= xmit.o
+b43-y				+= lo.o
+# b43 PCMCIA support
+b43-$(CONFIG_B43_PCMCIA)	+= pcmcia.o
+# b43 debugging
+b43-$(CONFIG_B43_DEBUG)		+= debugfs.o
+# b43 DMA and PIO
+b43-$(CONFIG_B43_DMA)		+= dma.o
+b43-$(CONFIG_B43_PIO)		+= pio.o
+
+obj-$(CONFIG_B43)		+= b43.o

drivers/net/wireless/b43/b43.h

+#ifndef B43_H_
+#define B43_H_
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/hw_random.h>
+#include <linux/ssb/ssb.h>
+#include <net/mac80211.h>
+
+#include "debugfs.h"
+#include "leds.h"
+#include "lo.h"
+#include "phy.h"
+
+#ifdef CONFIG_B43_DEBUG
+# define B43_DEBUG	1
+#else
+# define B43_DEBUG	0
+#endif
+
+#define B43_RX_MAX_SSI			60
+
+/* MMIO offsets */
+#define B43_MMIO_DMA0_REASON		0x20
+#define B43_MMIO_DMA0_IRQ_MASK		0x24
+#define B43_MMIO_DMA1_REASON		0x28
+#define B43_MMIO_DMA1_IRQ_MASK		0x2C
+#define B43_MMIO_DMA2_REASON		0x30
+#define B43_MMIO_DMA2_IRQ_MASK		0x34
+#define B43_MMIO_DMA3_REASON		0x38
+#define B43_MMIO_DMA3_IRQ_MASK		0x3C
+#define B43_MMIO_DMA4_REASON		0x40
+#define B43_MMIO_DMA4_IRQ_MASK		0x44
+#define B43_MMIO_DMA5_REASON		0x48
+#define B43_MMIO_DMA5_IRQ_MASK		0x4C
+#define B43_MMIO_MACCTL			0x120
+#define B43_MMIO_STATUS2_BITFIELD	0x124
+#define B43_MMIO_GEN_IRQ_REASON		0x128
+#define B43_MMIO_GEN_IRQ_MASK		0x12C
+#define B43_MMIO_RAM_CONTROL		0x130
+#define B43_MMIO_RAM_DATA		0x134
+#define B43_MMIO_PS_STATUS		0x140
+#define B43_MMIO_RADIO_HWENABLED_HI	0x158
+#define B43_MMIO_SHM_CONTROL		0x160
+#define B43_MMIO_SHM_DATA		0x164
+#define B43_MMIO_SHM_DATA_UNALIGNED	0x166
+#define B43_MMIO_XMITSTAT_0		0x170
+#define B43_MMIO_XMITSTAT_1		0x174
+#define B43_MMIO_REV3PLUS_TSF_LOW	0x180	/* core rev >= 3 only */
+#define B43_MMIO_REV3PLUS_TSF_HIGH	0x184	/* core rev >= 3 only */
+
+/* 32-bit DMA */
+#define B43_MMIO_DMA32_BASE0		0x200
+#define B43_MMIO_DMA32_BASE1		0x220
+#define B43_MMIO_DMA32_BASE2		0x240
+#define B43_MMIO_DMA32_BASE3		0x260
+#define B43_MMIO_DMA32_BASE4		0x280
+#define B43_MMIO_DMA32_BASE5		0x2A0
+/* 64-bit DMA */
+#define B43_MMIO_DMA64_BASE0		0x200
+#define B43_MMIO_DMA64_BASE1		0x240
+#define B43_MMIO_DMA64_BASE2		0x280
+#define B43_MMIO_DMA64_BASE3		0x2C0
+#define B43_MMIO_DMA64_BASE4		0x300
+#define B43_MMIO_DMA64_BASE5		0x340
+/* PIO */
+#define B43_MMIO_PIO1_BASE		0x300
+#define B43_MMIO_PIO2_BASE		0x310
+#define B43_MMIO_PIO3_BASE		0x320
+#define B43_MMIO_PIO4_BASE		0x330
+
+#define B43_MMIO_PHY_VER		0x3E0
+#define B43_MMIO_PHY_RADIO		0x3E2
+#define B43_MMIO_PHY0			0x3E6
+#define B43_MMIO_ANTENNA		0x3E8
+#define B43_MMIO_CHANNEL		0x3F0
+#define B43_MMIO_CHANNEL_EXT		0x3F4
+#define B43_MMIO_RADIO_CONTROL		0x3F6
+#define B43_MMIO_RADIO_DATA_HIGH	0x3F8
+#define B43_MMIO_RADIO_DATA_LOW		0x3FA
+#define B43_MMIO_PHY_CONTROL		0x3FC
+#define B43_MMIO_PHY_DATA		0x3FE
+#define B43_MMIO_MACFILTER_CONTROL	0x420
+#define B43_MMIO_MACFILTER_DATA		0x422
+#define B43_MMIO_RCMTA_COUNT		0x43C
+#define B43_MMIO_RADIO_HWENABLED_LO	0x49A
+#define B43_MMIO_GPIO_CONTROL		0x49C
+#define B43_MMIO_GPIO_MASK		0x49E
+#define B43_MMIO_TSF_0			0x632	/* core rev < 3 only */
+#define B43_MMIO_TSF_1			0x634	/* core rev < 3 only */
+#define B43_MMIO_TSF_2			0x636	/* core rev < 3 only */
+#define B43_MMIO_TSF_3			0x638	/* core rev < 3 only */
+#define B43_MMIO_RNG			0x65A
+#define B43_MMIO_POWERUP_DELAY		0x6A8
+
+/* SPROM boardflags_lo values */
+#define B43_BFL_BTCOEXIST		0x0001	/* implements Bluetooth coexistance */
+#define B43_BFL_PACTRL			0x0002	/* GPIO 9 controlling the PA */
+#define B43_BFL_AIRLINEMODE		0x0004	/* implements GPIO 13 radio disable indication */
+#define B43_BFL_RSSI			0x0008	/* software calculates nrssi slope. */
+#define B43_BFL_ENETSPI			0x0010	/* has ephy roboswitch spi */
+#define B43_BFL_XTAL_NOSLOW		0x0020	/* no slow clock available */
+#define B43_BFL_CCKHIPWR		0x0040	/* can do high power CCK transmission */
+#define B43_BFL_ENETADM			0x0080	/* has ADMtek switch */
+#define B43_BFL_ENETVLAN		0x0100	/* can do vlan */
+#define B43_BFL_AFTERBURNER		0x0200	/* supports Afterburner mode */
+#define B43_BFL_NOPCI			0x0400	/* leaves PCI floating */
+#define B43_BFL_FEM			0x0800	/* supports the Front End Module */
+#define B43_BFL_EXTLNA			0x1000	/* has an external LNA */
+#define B43_BFL_HGPA			0x2000	/* had high gain PA */
+#define B43_BFL_BTCMOD			0x4000	/* BFL_BTCOEXIST is given in alternate GPIOs */
+#define B43_BFL_ALTIQ			0x8000	/* alternate I/Q settings */
+
+/* GPIO register offset, in both ChipCommon and PCI core. */
+#define B43_GPIO_CONTROL		0x6c
+
+/* SHM Routing */
+enum {
+	B43_SHM_UCODE,		/* Microcode memory */
+	B43_SHM_SHARED,		/* Shared memory */
+	B43_SHM_SCRATCH,	/* Scratch memory */
+	B43_SHM_HW,		/* Internal hardware register */
+	B43_SHM_RCMTA,		/* Receive match transmitter address (rev >= 5 only) */
+};
+/* SHM Routing modifiers */
+#define B43_SHM_AUTOINC_R		0x0200	/* Auto-increment address on read */
+#define B43_SHM_AUTOINC_W		0x0100	/* Auto-increment address on write */
+#define B43_SHM_AUTOINC_RW		(B43_SHM_AUTOINC_R | \
+					 B43_SHM_AUTOINC_W)
+
+/* Misc SHM_SHARED offsets */
+#define B43_SHM_SH_WLCOREREV		0x0016	/* 802.11 core revision */
+#define B43_SHM_SH_PCTLWDPOS		0x0008
+#define B43_SHM_SH_RXPADOFF		0x0034	/* RX Padding data offset (PIO only) */
+#define B43_SHM_SH_PHYVER		0x0050	/* PHY version */
+#define B43_SHM_SH_PHYTYPE		0x0052	/* PHY type */
+#define B43_SHM_SH_ANTSWAP		0x005C	/* Antenna swap threshold */
+#define B43_SHM_SH_HOSTFLO		0x005E	/* Hostflags for ucode options (low) */
+#define B43_SHM_SH_HOSTFHI		0x0060	/* Hostflags for ucode options (high) */
+#define B43_SHM_SH_RFATT		0x0064	/* Current radio attenuation value */
+#define B43_SHM_SH_RADAR		0x0066	/* Radar register */
+#define B43_SHM_SH_PHYTXNOI		0x006E	/* PHY noise directly after TX (lower 8bit only) */
+#define B43_SHM_SH_RFRXSP1		0x0072	/* RF RX SP Register 1 */
+#define B43_SHM_SH_CHAN			0x00A0	/* Current channel (low 8bit only) */
+#define  B43_SHM_SH_CHAN_5GHZ		0x0100	/* Bit set, if 5Ghz channel */
+#define B43_SHM_SH_BCMCFIFOID		0x0108	/* Last posted cookie to the bcast/mcast FIFO */
+/* SHM_SHARED TX FIFO variables */
+#define B43_SHM_SH_SIZE01		0x0098	/* TX FIFO size for FIFO 0 (low) and 1 (high) */
+#define B43_SHM_SH_SIZE23		0x009A	/* TX FIFO size for FIFO 2 and 3 */
+#define B43_SHM_SH_SIZE45		0x009C	/* TX FIFO size for FIFO 4 and 5 */
+#define B43_SHM_SH_SIZE67		0x009E	/* TX FIFO size for FIFO 6 and 7 */
+/* SHM_SHARED background noise */
+#define B43_SHM_SH_JSSI0		0x0088	/* Measure JSSI 0 */
+#define B43_SHM_SH_JSSI1		0x008A	/* Measure JSSI 1 */
+#define B43_SHM_SH_JSSIAUX		0x008C	/* Measure JSSI AUX */
+/* SHM_SHARED crypto engine */
+#define B43_SHM_SH_DEFAULTIV		0x003C	/* Default IV location */
+#define B43_SHM_SH_NRRXTRANS		0x003E	/* # of soft RX transmitter addresses (max 8) */
+#define B43_SHM_SH_KTP			0x0056	/* Key table pointer */
+#define B43_SHM_SH_TKIPTSCTTAK		0x0318
+#define B43_SHM_SH_KEYIDXBLOCK		0x05D4	/* Key index/algorithm block (v4 firmware) */
+#define B43_SHM_SH_PSM			0x05F4	/* PSM transmitter address match block (rev < 5) */
+/* SHM_SHARED WME variables */
+#define B43_SHM_SH_EDCFSTAT		0x000E	/* EDCF status */
+#define B43_SHM_SH_TXFCUR		0x0030	/* TXF current index */
+#define B43_SHM_SH_EDCFQ		0x0240	/* EDCF Q info */
+/* SHM_SHARED powersave mode related */
+#define B43_SHM_SH_SLOTT		0x0010	/* Slot time */
+#define B43_SHM_SH_DTIMPER		0x0012	/* DTIM period */
+#define B43_SHM_SH_NOSLPZNATDTIM	0x004C	/* NOSLPZNAT DTIM */
+/* SHM_SHARED beacon variables */
+#define B43_SHM_SH_BTL0			0x0018	/* Beacon template length 0 */
+#define B43_SHM_SH_BTL1			0x001A	/* Beacon template length 1 */
+#define B43_SHM_SH_BTSFOFF		0x001C	/* Beacon TSF offset */
+#define B43_SHM_SH_TIMBPOS		0x001E	/* TIM B position in beacon */
+#define B43_SHM_SH_SFFBLIM		0x0044	/* Short frame fallback retry limit */
+#define B43_SHM_SH_LFFBLIM		0x0046	/* Long frame fallback retry limit */
+#define B43_SHM_SH_BEACPHYCTL		0x0054	/* Beacon PHY TX control word (see PHY TX control) */
+/* SHM_SHARED ACK/CTS control */
+#define B43_SHM_SH_ACKCTSPHYCTL		0x0022	/* ACK/CTS PHY control word (see PHY TX control) */
+/* SHM_SHARED probe response variables */
+#define B43_SHM_SH_PRSSID		0x0160	/* Probe Response SSID */
+#define B43_SHM_SH_PRSSIDLEN		0x0048	/* Probe Response SSID length */
+#define B43_SHM_SH_PRTLEN		0x004A	/* Probe Response template length */
+#define B43_SHM_SH_PRMAXTIME		0x0074	/* Probe Response max time */
+#define B43_SHM_SH_PRPHYCTL		0x0188	/* Probe Response PHY TX control word */
+/* SHM_SHARED rate tables */
+#define B43_SHM_SH_OFDMDIRECT		0x01C0	/* Pointer to OFDM direct map */
+#define B43_SHM_SH_OFDMBASIC		0x01E0	/* Pointer to OFDM basic rate map */
+#define B43_SHM_SH_CCKDIRECT		0x0200	/* Pointer to CCK direct map */
+#define B43_SHM_SH_CCKBASIC		0x0220	/* Pointer to CCK basic rate map */
+/* SHM_SHARED microcode soft registers */
+#define B43_SHM_SH_UCODEREV		0x0000	/* Microcode revision */
+#define B43_SHM_SH_UCODEPATCH		0x0002	/* Microcode patchlevel */
+#define B43_SHM_SH_UCODEDATE		0x0004	/* Microcode date */
+#define B43_SHM_SH_UCODETIME		0x0006	/* Microcode time */
+#define B43_SHM_SH_UCODESTAT		0x0040	/* Microcode debug status code */
+#define  B43_SHM_SH_UCODESTAT_INVALID	0
+#define  B43_SHM_SH_UCODESTAT_INIT	1
+#define  B43_SHM_SH_UCODESTAT_ACTIVE	2
+#define  B43_SHM_SH_UCODESTAT_SUSP	3	/* suspended */
+#define  B43_SHM_SH_UCODESTAT_SLEEP	4	/* asleep (PS) */
+#define B43_SHM_SH_MAXBFRAMES		0x0080	/* Maximum number of frames in a burst */
+#define B43_SHM_SH_SPUWKUP		0x0094	/* pre-wakeup for synth PU in us */
+#define B43_SHM_SH_PRETBTT		0x0096	/* pre-TBTT in us */
+
+/* SHM_SCRATCH offsets */
+#define B43_SHM_SC_MINCONT		0x0003	/* Minimum contention window */
+#define B43_SHM_SC_MAXCONT		0x0004	/* Maximum contention window */
+#define B43_SHM_SC_CURCONT		0x0005	/* Current contention window */
+#define B43_SHM_SC_SRLIMIT		0x0006	/* Short retry count limit */
+#define B43_SHM_SC_LRLIMIT		0x0007	/* Long retry count limit */
+#define B43_SHM_SC_DTIMC		0x0008	/* Current DTIM count */
+#define B43_SHM_SC_BTL0LEN		0x0015	/* Beacon 0 template length */
+#define B43_SHM_SC_BTL1LEN		0x0016	/* Beacon 1 template length */
+#define B43_SHM_SC_SCFB			0x0017	/* Short frame transmit count threshold for rate fallback */
+#define B43_SHM_SC_LCFB			0x0018	/* Long frame transmit count threshold for rate fallback */
+
+/* Hardware Radio Enable masks */
+#define B43_MMIO_RADIO_HWENABLED_HI_MASK (1 << 16)
+#define B43_MMIO_RADIO_HWENABLED_LO_MASK (1 << 4)
+
+/* HostFlags. See b43_hf_read/write() */
+#define B43_HF_ANTDIVHELP		0x00000001	/* ucode antenna div helper */
+#define B43_HF_SYMW			0x00000002	/* G-PHY SYM workaround */
+#define B43_HF_RXPULLW			0x00000004	/* RX pullup workaround */
+#define B43_HF_CCKBOOST			0x00000008	/* 4dB CCK power boost (exclusive with OFDM boost) */
+#define B43_HF_BTCOEX			0x00000010	/* Bluetooth coexistance */
+#define B43_HF_GDCW			0x00000020	/* G-PHY DV canceller filter bw workaround */
+#define B43_HF_OFDMPABOOST		0x00000040	/* Enable PA gain boost for OFDM */
+#define B43_HF_ACPR			0x00000080	/* Disable for Japan, channel 14 */
+#define B43_HF_EDCF			0x00000100	/* on if WME and MAC suspended */
+#define B43_HF_TSSIRPSMW		0x00000200	/* TSSI reset PSM ucode workaround */
+#define B43_HF_DSCRQ			0x00000400	/* Disable slow clock request in ucode */
+#define B43_HF_ACIW			0x00000800	/* ACI workaround: shift bits by 2 on PHY CRS */
+#define B43_HF_2060W			0x00001000	/* 2060 radio workaround */
+#define B43_HF_RADARW			0x00002000	/* Radar workaround */
+#define B43_HF_USEDEFKEYS		0x00004000	/* Enable use of default keys */
+#define B43_HF_BT4PRIOCOEX		0x00010000	/* Bluetooth 2-priority coexistance */
+#define B43_HF_FWKUP			0x00020000	/* Fast wake-up ucode */
+#define B43_HF_VCORECALC		0x00040000	/* Force VCO recalculation when powering up synthpu */
+#define B43_HF_PCISCW			0x00080000	/* PCI slow clock workaround */
+#define B43_HF_4318TSSI			0x00200000	/* 4318 TSSI */
+#define B43_HF_FBCMCFIFO		0x00400000	/* Flush bcast/mcast FIFO immediately */
+#define B43_HF_HWPCTL			0x00800000	/* Enable hardwarre power control */
+#define B43_HF_BTCOEXALT		0x01000000	/* Bluetooth coexistance in alternate pins */
+#define B43_HF_TXBTCHECK		0x02000000	/* Bluetooth check during transmission */
+#define B43_HF_SKCFPUP			0x04000000	/* Skip CFP update */
+
+/* MacFilter offsets. */
+#define B43_MACFILTER_SELF		0x0000
+#define B43_MACFILTER_BSSID		0x0003
+
+/* PowerControl */
+#define B43_PCTL_IN			0xB0
+#define B43_PCTL_OUT			0xB4
+#define B43_PCTL_OUTENABLE		0xB8
+#define B43_PCTL_XTAL_POWERUP		0x40
+#define B43_PCTL_PLL_POWERDOWN		0x80
+
+/* PowerControl Clock Modes */
+#define B43_PCTL_CLK_FAST		0x00
+#define B43_PCTL_CLK_SLOW		0x01
+#define B43_PCTL_CLK_DYNAMIC		0x02
+
+#define B43_PCTL_FORCE_SLOW		0x0800
+#define B43_PCTL_FORCE_PLL		0x1000
+#define B43_PCTL_DYN_XTAL		0x2000
+
+/* PHYVersioning */
+#define B43_PHYTYPE_A			0x00
+#define B43_PHYTYPE_B			0x01
+#define B43_PHYTYPE_G			0x02
+
+/* PHYRegisters */
+#define B43_PHY_ILT_A_CTRL		0x0072
+#define B43_PHY_ILT_A_DATA1		0x0073
+#define B43_PHY_ILT_A_DATA2		0x0074
+#define B43_PHY_G_LO_CONTROL		0x0810
+#define B43_PHY_ILT_G_CTRL		0x0472
+#define B43_PHY_ILT_G_DATA1		0x0473
+#define B43_PHY_ILT_G_DATA2		0x0474
+#define B43_PHY_A_PCTL			0x007B
+#define B43_PHY_G_PCTL			0x0029
+#define B43_PHY_A_CRS			0x0029
+#define B43_PHY_RADIO_BITFIELD		0x0401
+#define B43_PHY_G_CRS			0x0429
+#define B43_PHY_NRSSILT_CTRL		0x0803
+#define B43_PHY_NRSSILT_DATA		0x0804
+
+/* RadioRegisters */
+#define B43_RADIOCTL_ID			0x01
+
+/* MAC Control bitfield */
+#define B43_MACCTL_ENABLED		0x00000001	/* MAC Enabled */
+#define B43_MACCTL_PSM_RUN		0x00000002	/* Run Microcode */
+#define B43_MACCTL_PSM_JMP0		0x00000004	/* Microcode jump to 0 */
+#define B43_MACCTL_SHM_ENABLED		0x00000100	/* SHM Enabled */
+#define B43_MACCTL_SHM_UPPER		0x00000200	/* SHM Upper */
+#define B43_MACCTL_IHR_ENABLED		0x00000400	/* IHR Region Enabled */
+#define B43_MACCTL_PSM_DBG		0x00002000	/* Microcode debugging enabled */
+#define B43_MACCTL_GPOUTSMSK		0x0000C000	/* GPOUT Select Mask */
+#define B43_MACCTL_BE			0x00010000	/* Big Endian mode */
+#define B43_MACCTL_INFRA		0x00020000	/* Infrastructure mode */
+#define B43_MACCTL_AP			0x00040000	/* AccessPoint mode */
+#define B43_MACCTL_RADIOLOCK		0x00080000	/* Radio lock */
+#define B43_MACCTL_BEACPROMISC		0x00100000	/* Beacon Promiscuous */
+#define B43_MACCTL_KEEP_BADPLCP		0x00200000	/* Keep frames with bad PLCP */
+#define B43_MACCTL_KEEP_CTL		0x00400000	/* Keep control frames */
+#define B43_MACCTL_KEEP_BAD		0x00800000	/* Keep bad frames (FCS) */
+#define B43_MACCTL_PROMISC		0x01000000	/* Promiscuous mode */
+#define B43_MACCTL_HWPS			0x02000000	/* Hardware Power Saving */
+#define B43_MACCTL_AWAKE		0x04000000	/* Device is awake */
+#define B43_MACCTL_CLOSEDNET		0x08000000	/* Closed net (no SSID bcast) */
+#define B43_MACCTL_TBTTHOLD		0x10000000	/* TBTT Hold */
+#define B43_MACCTL_DISCTXSTAT		0x20000000	/* Discard TX status */
+#define B43_MACCTL_DISCPMQ		0x40000000	/* Discard Power Management Queue */
+#define B43_MACCTL_GMODE		0x80000000	/* G Mode */
+
+/* 802.11 core specific TM State Low flags */
+#define B43_TMSLOW_GMODE		0x20000000	/* G Mode Enable */
+#define B43_TMSLOW_PLLREFSEL		0x00200000	/* PLL Frequency Reference Select */
+#define B43_TMSLOW_MACPHYCLKEN		0x00100000	/* MAC PHY Clock Control Enable (rev >= 5) */
+#define B43_TMSLOW_PHYRESET		0x00080000	/* PHY Reset */
+#define B43_TMSLOW_PHYCLKEN		0x00040000	/* PHY Clock Enable */
+
+/* 802.11 core specific TM State High flags */
+#define B43_TMSHIGH_FCLOCK		0x00040000	/* Fast Clock Available (rev >= 5) */
+#define B43_TMSHIGH_APHY		0x00020000	/* A-PHY available (rev >= 5) */
+#define B43_TMSHIGH_GPHY		0x00010000	/* G-PHY available (rev >= 5) */
+
+/* Generic-Interrupt reasons. */
+#define B43_IRQ_MAC_SUSPENDED		0x00000001
+#define B43_IRQ_BEACON			0x00000002
+#define B43_IRQ_TBTT_INDI		0x00000004
+#define B43_IRQ_BEACON_TX_OK		0x00000008
+#define B43_IRQ_BEACON_CANCEL		0x00000010
+#define B43_IRQ_ATIM_END		0x00000020
+#define B43_IRQ_PMQ			0x00000040
+#define B43_IRQ_PIO_WORKAROUND		0x00000100
+#define B43_IRQ_MAC_TXERR		0x00000200
+#define B43_IRQ_PHY_TXERR		0x00000800
+#define B43_IRQ_PMEVENT			0x00001000
+#define B43_IRQ_TIMER0			0x00002000
+#define B43_IRQ_TIMER1			0x00004000
+#define B43_IRQ_DMA			0x00008000
+#define B43_IRQ_TXFIFO_FLUSH_OK		0x00010000
+#define B43_IRQ_CCA_MEASURE_OK		0x00020000
+#define B43_IRQ_NOISESAMPLE_OK		0x00040000
+#define B43_IRQ_UCODE_DEBUG		0x08000000
+#define B43_IRQ_RFKILL			0x10000000
+#define B43_IRQ_TX_OK			0x20000000
+#define B43_IRQ_PHY_G_CHANGED		0x40000000
+#define B43_IRQ_TIMEOUT			0x80000000
+
+#define B43_IRQ_ALL			0xFFFFFFFF
+#define B43_IRQ_MASKTEMPLATE		(B43_IRQ_MAC_SUSPENDED | \
+					 B43_IRQ_BEACON | \
+					 B43_IRQ_TBTT_INDI | \
+					 B43_IRQ_ATIM_END | \
+					 B43_IRQ_PMQ | \
+					 B43_IRQ_MAC_TXERR | \
+					 B43_IRQ_PHY_TXERR | \
+					 B43_IRQ_DMA | \
+					 B43_IRQ_TXFIFO_FLUSH_OK | \
+					 B43_IRQ_NOISESAMPLE_OK | \
+					 B43_IRQ_UCODE_DEBUG | \
+					 B43_IRQ_RFKILL | \
+					 B43_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 B43_CCK_RATE_1MB		0x02
+#define B43_CCK_RATE_2MB		0x04
+#define B43_CCK_RATE_5MB		0x0B
+#define B43_CCK_RATE_11MB		0x16
+#define B43_OFDM_RATE_6MB		0x0C
+#define B43_OFDM_RATE_9MB		0x12
+#define B43_OFDM_RATE_12MB		0x18
+#define B43_OFDM_RATE_18MB		0x24
+#define B43_OFDM_RATE_24MB		0x30
+#define B43_OFDM_RATE_36MB		0x48
+#define B43_OFDM_RATE_48MB		0x60
+#define B43_OFDM_RATE_54MB		0x6C
+/* Convert a b43 rate value to a rate in 100kbps */
+#define B43_RATE_TO_BASE100KBPS(rate)	(((rate) * 10) / 2)
+
+#define B43_DEFAULT_SHORT_RETRY_LIMIT	7
+#define B43_DEFAULT_LONG_RETRY_LIMIT	4
+
+/* Max size of a security key */
+#define B43_SEC_KEYSIZE			16
+/* Security algorithms. */
+enum {
+	B43_SEC_ALGO_NONE = 0,	/* unencrypted, as of TX header. */
+	B43_SEC_ALGO_WEP40,
+	B43_SEC_ALGO_TKIP,
+	B43_SEC_ALGO_AES,
+	B43_SEC_ALGO_WEP104,
+	B43_SEC_ALGO_AES_LEGACY,
+};
+
+struct b43_dmaring;
+struct b43_pioqueue;
+
+/* The firmware file header */
+#define B43_FW_TYPE_UCODE	'u'
+#define B43_FW_TYPE_PCM		'p'
+#define B43_FW_TYPE_IV		'i'
+struct b43_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;
+} __attribute__((__packed__));
+
+/* Initial Value file format */
+#define B43_IV_OFFSET_MASK	0x7FFF
+#define B43_IV_32BIT		0x8000
+struct b43_iv {
+	__be16 offset_size;
+	union {
+		__be16 d16;
+		__be32 d32;
+	} data __attribute__((__packed__));
+} __attribute__((__packed__));
+
+
+#define B43_PHYMODE(phytype)		(1 << (phytype))
+#define B43_PHYMODE_A			B43_PHYMODE(B43_PHYTYPE_A)
+#define B43_PHYMODE_B			B43_PHYMODE(B43_PHYTYPE_B)
+#define B43_PHYMODE_G			B43_PHYMODE(B43_PHYTYPE_G)
+
+struct b43_phy {
+	/* Possible PHYMODEs on this PHY */
+	u8 possible_phymodes;
+	/* GMODE bit enabled? */
+	bool gmode;
+	/* Possible ieee80211 subsystem hwmodes for this PHY.
+	 * Which mode is selected, depends on thr GMODE enabled bit */
+#define B43_MAX_PHYHWMODES	2
+	struct ieee80211_hw_mode hwmodes[B43_MAX_PHYHWMODES];
+
+	/* Analog Type */
+	u8 analog;
+	/* B43_PHYTYPE_ */
+	u8 type;
+	/* PHY revision number. */
+	u8 rev;
+
+	/* Radio versioning */
+	u16 radio_manuf;	/* Radio manufacturer */
+	u16 radio_ver;		/* Radio version */
+	u8 radio_rev;		/* Radio revision */
+
+	bool radio_on;		/* Radio switched on/off */
+	bool locked;		/* Only used in b43_phy_{un}lock() */
+	bool dyn_tssi_tbl;	/* tssi2dbm is kmalloc()ed. */
+
+	/* ACI (adjacent channel interference) flags. */
+	bool aci_enable;
+	bool aci_wlan_automatic;
+	bool aci_hw_rssi;
+
+	u16 minlowsig[2];
+	u16 minlowsigpos[2];
+
+	/* TSSI to dBm table in use */
+	const s8 *tssi2dbm;
+	/* Target idle TSSI */
+	int tgt_idle_tssi;
+	/* Current idle TSSI */
+	int cur_idle_tssi;
+
+	/* LocalOscillator control values. */
+	struct b43_txpower_lo_control *lo_control;
+	/* Values from b43_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 */
+
+	/* PHY lock for core.rev < 3
+	 * This lock is only used by b43_phy_{un}lock()
+	 */
+	spinlock_t lock;
+
+	/* Desired TX power level (in dBm).
+	 * This is set by the user and adjusted in b43_phy_xmitpower(). */
+	u8 power_level;
+	/* A-PHY TX Power control value. */
+	u16 txpwr_offset;
+
+	/* Current TX power level attenuation control values */
+	struct b43_bbatt bbatt;
+	struct b43_rfatt rfatt;
+	u8 tx_control;		/* B43_TXCTL_XXX */
+#ifdef CONFIG_B43_DEBUG
+	bool manual_txpower_control;	/* Manual TX-power control enabled? */
+#endif
+	/* Hardware Power Control enabled? */
+	bool hardware_power_control;
+
+	/* Current Interference Mitigation mode */
+	int interfmode;
+	/* Stack of saved values from the Interference Mitigation code.
+	 * Each value in the stack is layed 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 B43_INTERFSTACK_SIZE	26
+	u32 interfstack[B43_INTERFSTACK_SIZE];	//FIXME: use a data structure
+
+	/* 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;		//FIXME rename?
+};
+
+/* Data structures for DMA transmission, per 80211 core. */
+struct b43_dma {
+	struct b43_dmaring *tx_ring0;
+	struct b43_dmaring *tx_ring1;
+	struct b43_dmaring *tx_ring2;
+	struct b43_dmaring *tx_ring3;
+	struct b43_dmaring *tx_ring4;
+	struct b43_dmaring *tx_ring5;
+
+	struct b43_dmaring *rx_ring0;
+	struct b43_dmaring *rx_ring3;	/* only available on core.rev < 5 */
+};
+
+/* Data structures for PIO transmission, per 80211 core. */
+struct b43_pio {
+	struct b43_pioqueue *queue0;
+	struct b43_pioqueue *queue1;
+	struct b43_pioqueue *queue2;
+	struct b43_pioqueue *queue3;
+};
+
+/* Context information for a noise calculation (Link Quality). */
+struct b43_noise_calculation {
+	u8 channel_at_start;
+	bool calculation_running;
+	u8 nr_samples;
+	s8 samples[8][4];
+};
+
+struct b43_stats {
+	u8 link_noise;
+	/* Store the last TX/RX times here for updating the leds. */
+	unsigned long last_tx;
+	unsigned long last_rx;
+};
+
+struct b43_key {
+	/* If keyconf is NULL, this key is disabled.
+	 * keyconf is a cookie. Don't derefenrence it outside of the set_key
+	 * path, because b43 doesn't own it. */
+	struct ieee80211_key_conf *keyconf;
+	u8 algorithm;
+};
+
+struct b43_wldev;
+
+/* Data structure for the WLAN parts (802.11 cores) of the b43 chip. */
+struct b43_wl {
+	/* Pointer to the active wireless device on this chip */
+	struct b43_wldev *current_dev;
+	/* Pointer to the ieee80211 hardware data structure */
+	struct ieee80211_hw *hw;
+
+	spinlock_t irq_lock;
+	struct mutex mutex;
+	spinlock_t leds_lock;
+
+	/* We can only have one operating interface (802.11 core)
+	 * at a time. General information about this interface follows.
+	 */
+
+	/* Opaque ID of the operating interface (!= monitor
+	 * interface) from the ieee80211 subsystem.
+	 * Do not modify.
+	 */
+	int if_id;
+	/* The MAC address of the operating interface. */
+	u8 mac_addr[ETH_ALEN];
+	/* Current BSSID */
+	u8 bssid[ETH_ALEN];
+	/* Interface type. (IEEE80211_IF_TYPE_XXX) */
+	int if_type;
+	/* Counter of active monitor interfaces. */
+	int monitor;
+	/* Is the card operating in AP, STA or IBSS mode? */
+	bool operating;
+	/* Promisc mode active?
+	 * Note that (monitor != 0) implies promisc.
+	 */
+	bool promisc;
+	/* Stats about the wireless interface */
+	struct ieee80211_low_level_stats ieee_stats;
+
+	struct hwrng rng;
+	u8 rng_initialized;
+	char rng_name[30 + 1];
+
+	/* List of all wireless devices on this chip */
+	struct list_head devlist;
+	u8 nr_devs;
+};
+
+/* Pointers to the firmware data and meta information about it. */
+struct b43_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 {
+	B43_STAT_UNINIT = 0,	/* Uninitialized. */
+	B43_STAT_INITIALIZED = 1,	/* Initialized, but not started, yet. */
+	B43_STAT_STARTED = 2,	/* Up and running. */
+};
+#define b43_status(wldev)		atomic_read(&(wldev)->__init_status)
+#define b43_set_status(wldev, stat)	do {			\
+		atomic_set(&(wldev)->__init_status, (stat));	\
+		smp_wmb();					\
+					} while (0)
+
+/* XXX---   HOW LOCKING WORKS IN B43   ---XXX
+ *
+ * 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 b43_wldev {
+	struct ssb_device *dev;
+	struct b43_wl *wl;
+
+	/* The device initialization status.
+	 * Use b43_status() to query. */
+	atomic_t __init_status;
+	/* Saved init status for handling suspend. */
+	int suspend_init_status;
+
+	bool __using_pio;	/* Internal, use b43_using_pio(). */
+	bool bad_frames_preempt;	/* Use "Bad Frames Preemption" (default off) */
+	bool reg124_set_0x4;	/* Some variable to keep track of IRQ stuff. */
+	bool short_preamble;	/* TRUE, if short preamble is enabled. */
+	bool short_slot;	/* TRUE, if short slot timing is enabled. */
+	bool radio_hw_enable;	/* saved state of radio hardware enabled state */
+
+	/* PHY/Radio device. */
+	struct b43_phy phy;
+	union {
+		/* DMA engines. */
+		struct b43_dma dma;
+		/* PIO engines. */
+		struct b43_pio pio;
+	};
+
+	/* Various statistics about the physical device. */
+	struct b43_stats stats;
+
+#define B43_NR_LEDS		4
+	struct b43_led leds[B43_NR_LEDS];
+
+	/* Reason code of the last interrupt. */
+	u32 irq_reason;
+	u32 dma_reason[6];
+	/* saved irq enable/disable state bitfield. */
+	u32 irq_savedstate;
+	/* Link Quality calculation context. */
+	struct b43_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 b43_key key[58];
+
+	/* Cached beacon template while uploading the template. */
+	struct sk_buff *cached_beacon;
+
+	/* Firmware data */
+	struct b43_firmware fw;
+
+	/* Devicelist in struct b43_wl (all 802.11 cores) */
+	struct list_head list;
+
+	/* Debugging stuff follows. */
+#ifdef CONFIG_B43_DEBUG
+	struct b43_dfsentry *dfsentry;
+#endif
+};
+
+static inline struct b43_wl *hw_to_b43_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_B43_DMA) && defined(CONFIG_B43_PIO)
+static inline int b43_using_pio(struct b43_wldev *dev)
+{
+	return dev->__using_pio;
+}
+#elif defined(CONFIG_B43_DMA)
+static inline int b43_using_pio(struct b43_wldev *dev)
+{
+	return 0;
+}
+#elif defined(CONFIG_B43_PIO)
+static inline int b43_using_pio(struct b43_wldev *dev)
+{
+	return 1;
+}
+#else
+# error "Using neither DMA nor PIO? Confused..."
+#endif
+
+static inline struct b43_wldev *dev_to_b43_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 b43_is_mode(struct b43_wl *wl, int type)
+{
+	if (type == IEEE80211_IF_TYPE_MNTR)
+		return !!(wl->monitor);
+	return (wl->operating && wl->if_type == type);
+}
+
+static inline u16 b43_read16(struct b43_wldev *dev, u16 offset)
+{
+	return ssb_read16(dev->dev, offset);
+}
+
+static inline void b43_write16(struct b43_wldev *dev, u16 offset, u16 value)
+{
+	ssb_write16(dev->dev, offset, value);
+}
+
+static inline u32 b43_read32(struct b43_wldev *dev, u16 offset)
+{
+	return ssb_read32(dev->dev, offset);
+}
+
+static inline void b43_write32(struct b43_wldev *dev, u16 offset, u32 value)
+{
+	ssb_write32(dev->dev, offset, value);
+}
+
+/* Message printing */
+void b43info(struct b43_wl *wl, const char *fmt, ...)
+    __attribute__ ((format(printf, 2, 3)));
+void b43err(struct b43_wl *wl, const char *fmt, ...)
+    __attribute__ ((format(printf, 2, 3)));
+void b43warn(struct b43_wl *wl, const char *fmt, ...)
+    __attribute__ ((format(printf, 2, 3)));
+#if B43_DEBUG
+void b43dbg(struct b43_wl *wl, const char *fmt, ...)
+    __attribute__ ((format(printf, 2, 3)));
+#else /* DEBUG */
+# define b43dbg(wl, fmt...) do { /* nothing */ } while (0)
+#endif /* DEBUG */
+
+/* A WARN_ON variant that vanishes when b43 debugging is disabled.
+ * This _also_ evaluates the arg with debugging disabled. */
+#if B43_DEBUG
+# define B43_WARN_ON(x)	WARN_ON(x)
+#else
+static inline bool __b43_warn_on_dummy(bool x) { return x; }
+# define B43_WARN_ON(x)	__b43_warn_on_dummy(unlikely(!!(x)))
+#endif
+
+/** Limit a value between two limits */
+#ifdef limit_value
+# undef limit_value
+#endif
+#define limit_value(value, min, max)  \
+	({						\
+		typeof(value) __value = (value);	\
+		typeof(value) __min = (min);		\
+		typeof(value) __max = (max);		\
+		if (__value < __min)			\
+			__value = __min;		\
+		else if (__value > __max)		\
+			__value = __max;		\
+		__value;				\
+	})
+
+/* Convert an integer to a Q5.2 value */
+#define INT_TO_Q52(i)	((i) << 2)
+/* Convert a Q5.2 value to an integer (precision loss!) */
+#define Q52_TO_INT(q52)	((q52) >> 2)
+/* Macros for printing a value in Q5.2 format */
+#define Q52_FMT		"%u.%u"
+#define Q52_ARG(q52)	Q52_TO_INT(q52), ((((q52) & 0x3) * 100) / 4)
+
+#endif /* B43_H_ */

drivers/net/wireless/b43/debugfs.c

+/*
+
+  Broadcom B43 wireless driver
+
+  debugfs driver debugging code
+
+  Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+
+#include "b43.h"
+#include "main.h"
+#include "debugfs.h"
+#include "dma.h"
+#include "pio.h"
+#include "xmit.h"
+
+
+/* The root directory. */
+struct dentry *rootdir;
+
+struct b43_debugfs_fops {
+	ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize);
+	int (*write)(struct b43_wldev *dev, const char *buf, size_t count);
+	struct file_operations fops;
+	/* Offset of struct b43_dfs_file in struct b43_dfsentry */
+	size_t file_struct_offset;
+	/* Take wl->irq_lock before calling read/write? */
+	bool take_irqlock;
+};
+
+static inline
+struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev,
+				       const struct b43_debugfs_fops *dfops)
+{
+	void *p;
+
+	p = dev->dfsentry;
+	p += dfops->file_struct_offset;
+
+	return p;
+}
+
+
+#define fappend(fmt, x...)	\
+	do {							\
+		if (bufsize - count)				\
+			count += snprintf(buf + count,		\
+					  bufsize - count,	\
+					  fmt , ##x);		\
+		else						\
+			printk(KERN_ERR "b43: fappend overflow\n"); \
+	} while (0)
+
+
+/* wl->irq_lock is locked */
+ssize_t tsf_read_file(struct b43_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	u64 tsf;
+
+	b43_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 */
+int tsf_write_file(struct b43_wldev *dev, const char *buf, size_t count)
+{
+	u64 tsf;
+
+	if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1)
+		return -EINVAL;
+	b43_tsf_write(dev, tsf);
+
+	return 0;
+}
+
+/* wl->irq_lock is locked */
+ssize_t ucode_regs_read_file(struct b43_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,
+			b43_shm_read16(dev, B43_SHM_SCRATCH, i));
+	}
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+ssize_t shm_read_file(struct b43_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 <= 0)
+			break;
+		tmp = b43_shm_read16(dev, B43_SHM_SHARED, 2 * i);
+		le16buf[i] = cpu_to_le16(tmp);
+		count += sizeof(tmp);
+		bufsize -= sizeof(tmp);
+	}
+
+	return count;
+}
+
+ssize_t txstat_read_file(struct b43_wldev *dev, char *buf, size_t bufsize)
+{
+	struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
+	ssize_t count = 0;
+	unsigned long flags;
+	int i, idx;
+	struct b43_txstatus *stat;
+
+	spin_lock_irqsave(&log->lock, flags);
+	if (log->end < 0) {
+		fappend("Nothing transmitted, yet\n");
+		goto out_unlock;
+	}
+	fappend("b43 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 == B43_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;
+}
+
+ssize_t txpower_g_read_file(struct b43_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+
+	if (dev->phy.type != B43_PHYTYPE_G) {
+		fappend("Device is not a G-PHY\n");
+		goto out;
+	}
+	fappend("Control:               %s\n", dev->phy.manual_txpower_control ?
+		"MANUAL" : "AUTOMATIC");
+	fappend("Baseband attenuation:  %u\n", dev->phy.bbatt.att);
+	fappend("Radio attenuation:     %u\n", dev->phy.rfatt.att);
+	fappend("TX Mixer Gain:         %s\n",
+		(dev->phy.tx_control & B43_TXCTL_TXMIX) ? "ON" : "OFF");
+	fappend("PA Gain 2dB:           %s\n",
+		(dev->phy.tx_control & B43_TXCTL_PA2DB) ? "ON" : "OFF");
+	fappend("PA Gain 3dB:           %s\n",
+		(dev->phy.tx_control & B43_TXCTL_PA3DB) ? "ON" : "OFF");
+	fappend("\n\n");
+	fappend("You can write to this file:\n");
+	fappend("Writing \"auto\" enables automatic txpower control.\n");
+	fappend
+	    ("Writing the attenuation values as \"bbatt rfatt txmix pa2db pa3db\" "
+	     "enables manual txpower control.\n");
+	fappend("Example: 5 4 0 0 1\n");
+	fappend("Enables manual control with Baseband attenuation 5, "
+		"Radio attenuation 4, No TX Mixer Gain, "
+		"No PA Gain 2dB, With PA Gain 3dB.\n");
+out:
+	return count;
+}
+
+int txpower_g_write_file(struct b43_wldev *dev, const char *buf, size_t count)
+{
+	unsigned long flags;
+	unsigned long phy_flags;
+	int err = 0;
+
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+	if (dev->phy.type != B43_PHYTYPE_G) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+	if ((count >= 4) && (memcmp(buf, "auto", 4) == 0)) {
+		/* Automatic control */
+		dev->phy.manual_txpower_control = 0;
+		b43_phy_xmitpower(dev);
+	} else {
+		int bbatt = 0, rfatt = 0, txmix = 0, pa2db = 0, pa3db = 0;
+		/* Manual control */
+		if (sscanf(buf, "%d %d %d %d %d", &bbatt, &rfatt,
+			   &txmix, &pa2db, &pa3db) != 5) {
+			err = -EINVAL;
+			goto out_unlock;
+		}
+		b43_put_attenuation_into_ranges(dev, &bbatt, &rfatt);
+		dev->phy.manual_txpower_control = 1;
+		dev->phy.bbatt.att = bbatt;
+		dev->phy.rfatt.att = rfatt;
+		dev->phy.tx_control = 0;
+		if (txmix)
+			dev->phy.tx_control |= B43_TXCTL_TXMIX;
+		if (pa2db)
+			dev->phy.tx_control |= B43_TXCTL_PA2DB;
+		if (pa3db)
+			dev->phy.tx_control |= B43_TXCTL_PA3DB;
+		b43_phy_lock(dev, phy_flags);
+		b43_radio_lock(dev);
+		b43_set_txpower_g(dev, &dev->phy.bbatt,
+				  &dev->phy.rfatt, dev->phy.tx_control);
+		b43_radio_unlock(dev);
+		b43_phy_unlock(dev, phy_flags);
+	}
+out_unlock:
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+
+	return err;
+}
+
+/* wl->irq_lock is locked */
+int restart_write_file(struct b43_wldev *dev, const char *buf, size_t count)
+{
+	int err = 0;
+
+	if (count > 0 && buf[0] == '1') {
+		b43_controller_restart(dev, "manually restarted");
+	} else
+		err = -EINVAL;
+
+	return err;
+}
+
+static ssize_t append_lo_table(ssize_t count, char *buf, const size_t bufsize,
+			       struct b43_loctl table[B43_NR_BB][B43_NR_RF])
+{
+	unsigned int i, j;
+	struct b43_loctl *ctl;
+
+	for (i = 0; i < B43_NR_BB; i++) {
+		for (j = 0; j < B43_NR_RF; j++) {
+			ctl = &(table[i][j]);
+			fappend("(bbatt %2u, rfatt %2u)  ->  "
+				"(I %+3d, Q %+3d, Used: %d, Calibrated: %d)\n",
+				i, j, ctl->i, ctl->q,
+				ctl->used,
+				b43_loctl_is_calibrated(ctl));
+		}
+	}
+
+	return count;
+}
+
+ssize_t loctls_read_file(struct b43_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	struct b43_txpower_lo_control *lo;
+	int i, err = 0;
+
+	if (dev->phy.type != B43_PHYTYPE_G) {
+		fappend("Device is not a G-PHY\n");
+		err = -ENODEV;
+		goto out;
+	}
+	lo = dev->phy.lo_control;
+	fappend("-- Local Oscillator calibration data --\n\n");
+	fappend("Measured: %d,  Rebuild: %d,  HW-power-control: %d\n",
+		lo->lo_measured,
+		lo->rebuild,
+		dev->phy.hardware_power_control);
+	fappend("TX Bias: 0x%02X,  TX Magn: 0x%02X\n",
+		lo->tx_bias, lo->tx_magn);
+	fappend("Power Vector: 0x%08X%08X\n",
+		(unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
+		(unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL));
+	fappend("\nControl table WITH PADMIX:\n");
+	count = append_lo_table(count, buf, bufsize, lo->with_padmix);
+	fappend("\nControl table WITHOUT PADMIX:\n");
+	count = append_lo_table(count, buf, bufsize, lo->no_padmix);
+	fappend("\nUsed RF attenuation values:  Value(WithPadmix flag)\n");
+	for (i = 0; i < lo->rfatt_list.len; i++) {
+		fappend("%u(%d), ",
+			lo->rfatt_list.list[i].att,
+			lo->rfatt_list.list[i].with_padmix);
+	}
+	fappend("\n");
+	fappend("\nUsed Baseband attenuation values:\n");
+	for (i = 0; i < lo->bbatt_list.len; i++) {
+		fappend("%u, ",
+			lo->bbatt_list.list[i].att);
+	}
+	fappend("\n");
+
+out:
+	return err ? err : count;
+}
+
+#undef fappend
+
+static int b43_debugfs_open(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
+				size_t count, loff_t *ppos)
+{
+	struct b43_wldev *dev;
+	struct b43_debugfs_fops *dfops;
+	struct b43_dfs_file *dfile;
+	ssize_t ret;
+	char *buf;
+	const size_t bufsize = 1024 * 128;
+	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 (b43_status(dev) < B43_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(file->f_op, struct b43_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 b43_debugfs_write(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct b43_wldev *dev;
+	struct b43_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 (b43_status(dev) < B43_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(file->f_op, struct b43_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 B43_DEBUGFS_FOPS(name, _read, _write, _take_irqlock)	\
+	static struct b43_debugfs_fops fops_##name = {		\
+		.read	= _read,				\
+		.write	= _write,				\
+		.fops	= {					\
+			.open	= b43_debugfs_open,		\
+			.read	= b43_debugfs_read,		\
+			.write	= b43_debugfs_write,		\
+		},						\
+		.file_struct_offset = offsetof(struct b43_dfsentry, \
+					       file_##name),	\
+		.take_irqlock	= _take_irqlock,		\
+	}
+
+B43_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
+B43_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1);
+B43_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1);
+B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
+B43_DEBUGFS_FOPS(txpower_g, txpower_g_read_file, txpower_g_write_file, 0);
+B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
+B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0);
+
+
+int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
+{
+	return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
+}
+
+static void b43_remove_dynamic_debug(struct b43_wldev *dev)
+{
+	struct b43_dfsentry *e = dev->dfsentry;
+	int i;
+
+	for (i = 0; i < __B43_NR_DYNDBG; i++)
+		debugfs_remove(e->dyn_debug_dentries[i]);
+}
+
+static void b43_add_dynamic_debug(struct b43_wldev *dev)
+{
+	struct b43_dfsentry *e = dev->dfsentry;
+	struct dentry *d;
+
+#define add_dyn_dbg(name, id, initstate) do {		\
+	e->dyn_debug[id] = (initstate);			\
+	d = debugfs_create_bool(name, 0600, e->subdir,	\
+				&(e->dyn_debug[id]));	\
+	if (!IS_ERR(d))					\
+		e->dyn_debug_dentries[id] = d;		\
+				} while (0)
+
+	add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0);
+	add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
+	add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
+	add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
+	add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
+
+#undef add_dyn_dbg
+}
+
+void b43_debugfs_add_device(struct b43_wldev *dev)
+{
+	struct b43_dfsentry *e;
+	struct b43_txstatus_log *log;
+	char devdir[16];
+
+	B43_WARN_ON(!dev);
+	e = kzalloc(sizeof(*e), GFP_KERNEL);
+	if (!e) {
+		b43err(dev->wl, "debugfs: add device OOM\n");
+		return;
+	}
+	e->dev = dev;
+	log = &e->txstatlog;
+	log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
+			   sizeof(struct b43_txstatus), GFP_KERNEL);
+	if (!log->log) {
+		b43err(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);
+	if (!e->subdir || IS_ERR(e->subdir)) {
+		if (e->subdir == ERR_PTR(-ENODEV)) {
+			b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
+			       "enabled in kernel config\n");
+		} else {
+			b43err(dev->wl, "debugfs: cannot create %s directory\n",
+			       devdir);
+		}
+		dev->dfsentry = NULL;
+		kfree(log->log);
+		kfree(e);
+		return;
+	}
+
+#define ADD_FILE(name, mode)	\
+	do {							\
+		struct dentry *d;				\
+		d = debugfs_create_file(__stringify(name),	\
+					mode, e->subdir, dev,	\
+					&fops_##name.fops);	\
+		e->file_##name.dentry = NULL;			\
+		if (!IS_ERR(d))					\
+			e->file_##name.dentry = d;		\
+	} while (0)
+
+
+	ADD_FILE(tsf, 0600);
+	ADD_FILE(ucode_regs, 0400);
+	ADD_FILE(shm, 0400);
+	ADD_FILE(txstat, 0400);
+	ADD_FILE(txpower_g, 0600);
+	ADD_FILE(restart, 0200);
+	ADD_FILE(loctls, 0400);
+
+#undef ADD_FILE
+
+	b43_add_dynamic_debug(dev);
+}
+
+void b43_debugfs_remove_device(struct b43_wldev *dev)
+{
+	struct b43_dfsentry *e;
+
+	if (!dev)
+		return;
+	e = dev->dfsentry;
+	if (!e)
+		return;
+	b43_remove_dynamic_debug(dev);
+
+	debugfs_remove(e->file_tsf.dentry);
+	debugfs_remove(e->file_ucode_regs.dentry);
+	debugfs_remove(e->file_shm.dentry);
+	debugfs_remove(e->file_txstat.dentry);
+	debugfs_remove(e->file_txpower_g.dentry);
+	debugfs_remove(e->file_restart.dentry);
+	debugfs_remove(e->file_loctls.dentry);
+
+	debugfs_remove(e->subdir);
+	kfree(e->txstatlog.log);
+	kfree(e);
+}
+
+void b43_debugfs_log_txstat(struct b43_wldev *dev,
+			    const struct b43_txstatus *status)
+{
+	struct b43_dfsentry *e = dev->dfsentry;
+	struct b43_txstatus_log *log;
+	struct b43_txstatus *cur;
+	int i;
+
+	if (!e)
+		return;
+	log = &e->txstatlog;
+	B43_WARN_ON(!irqs_disabled());
+	spin_lock(&log->lock);
+	i = log->end + 1;
+	if (i == B43_NR_LOGGED_TXSTATUS)
+		i = 0;
+	log->end = i;
+	cur = &(log->log[i]);
+	memcpy(cur, status, sizeof(*cur));
+	spin_unlock(&log->lock);
+}
+
+void b43_debugfs_init(void)
+{
+	rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+	if (IS_ERR(rootdir))
+		rootdir = NULL;
+}
+
+void b43_debugfs_exit(void)
+{
+	debugfs_remove(rootdir);
+}

drivers/net/wireless/b43/debugfs.h

+#ifndef B43_DEBUGFS_H_
+#define B43_DEBUGFS_H_
+
+struct b43_wldev;
+struct b43_txstatus;
+
+enum b43_dyndbg {		/* Dynamic debugging features */
+	B43_DBG_XMITPOWER,
+	B43_DBG_DMAOVERFLOW,
+	B43_DBG_DMAVERBOSE,
+	B43_DBG_PWORK_FAST,
+	B43_DBG_PWORK_STOP,
+	__B43_NR_DYNDBG,
+};
+
+#ifdef CONFIG_B43_DEBUG
+
+struct dentry;
+
+#define B43_NR_LOGGED_TXSTATUS	100
+
+struct b43_txstatus_log {
+	struct b43_txstatus *log;
+	int end;
+	spinlock_t lock;
+};
+
+struct b43_dfs_file {
+	struct dentry *dentry;
+	char *buffer;
+	size_t data_len;
+};
+
+struct b43_dfsentry {
+	struct b43_wldev *dev;
+	struct dentry *subdir;
+
+	struct b43_dfs_file file_tsf;
+	struct b43_dfs_file file_ucode_regs;
+	struct b43_dfs_file file_shm;
+	struct b43_dfs_file file_txstat;
+	struct b43_dfs_file file_txpower_g;
+	struct b43_dfs_file file_restart;
+	struct b43_dfs_file file_loctls;
+
+	struct b43_txstatus_log txstatlog;
+
+	/* Enabled/Disabled list for the dynamic debugging features. */
+	u32 dyn_debug[__B43_NR_DYNDBG];
+	/* Dentries for the dynamic debugging entries. */
+	struct dentry *dyn_debug_dentries[__B43_NR_DYNDBG];
+};
+
+int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature);
+
+void b43_debugfs_init(void);
+void b43_debugfs_exit(void);
+void b43_debugfs_add_device(struct b43_wldev *dev);
+void b43_debugfs_remove_device(struct b43_wldev *dev);
+void b43_debugfs_log_txstat(struct b43_wldev *dev,
+			    const struct b43_txstatus *status);
+
+#else /* CONFIG_B43_DEBUG */
+
+static inline int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
+{
+	return 0;
+}
+
+static inline void b43_debugfs_init(void)
+{
+}
+static inline void b43_debugfs_exit(void)
+{
+}
+static inline void b43_debugfs_add_device(struct b43_wldev *dev)
+{
+}
+static inline void b43_debugfs_remove_device(struct b43_wldev *dev)
+{
+}
+static inline void b43_debugfs_log_txstat(struct b43_wldev *dev,
+					  const struct b43_txstatus *status)
+{
+}
+
+#endif /* CONFIG_B43_DEBUG */
+
+#endif /* B43_DEBUGFS_H_ */

drivers/net/wireless/b43/dma.c

+/*
+
+  Broadcom B43 wireless driver
+
+  DMA ringbuffer and descriptor allocation/management
+
+  Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
+
+  Some code in this file is derived from the b44.c driver
+  Copyright (C) 2002 David S. Miller
+  Copyright (C) Pekka Pietikainen
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.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>
+
+/* 32bit DMA ops. */
+static
+struct b43_dmadesc_generic *op32_idx2desc(struct b43_dmaring *ring,
+					  int slot,
+					  struct b43_dmadesc_meta **meta)
+{
+	struct b43_dmadesc32 *desc;
+
+	*meta = &(ring->meta[slot]);
+	desc = ring->descbase;
+	desc = &(desc[slot]);
+
+	return (struct b43_dmadesc_generic *)desc;
+}
+
+static void op32_fill_descriptor(struct b43_dmaring *ring,
+				 struct b43_dmadesc_generic *desc,
+				 dma_addr_t dmaaddr, u16 bufsize,
+				 int start, int end, int irq)
+{
+	struct b43_dmadesc32 *descbase = ring->descbase;
+	int slot;
+	u32 ctl;
+	u32 addr;
+	u32 addrext;
+
+	slot = (int)(&(desc->dma32) - descbase);
+	B43_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 |= ssb_dma_translation(ring->dev->dev);
+	ctl = (bufsize - ring->frameoffset)
+	    & B43_DMA32_DCTL_BYTECNT;
+	if (slot == ring->nr_slots - 1)
+		ctl |= B43_DMA32_DCTL_DTABLEEND;
+	if (start)
+		ctl |= B43_DMA32_DCTL_FRAMESTART;
+	if (end)
+		ctl |= B43_DMA32_DCTL_FRAMEEND;
+	if (irq)
+		ctl |= B43_DMA32_DCTL_IRQ;
+	ctl |= (addrext << B43_DMA32_DCTL_ADDREXT_SHIFT)
+	    & B43_DMA32_DCTL_ADDREXT_MASK;
+
+	desc->dma32.control = cpu_to_le32(ctl);
+	desc->dma32.address = cpu_to_le32(addr);
+}
+
+static void op32_poke_tx(struct b43_dmaring *ring, int slot)
+{
+	b43_dma_write(ring, B43_DMA32_TXINDEX,
+		      (u32) (slot * sizeof(struct b43_dmadesc32)));
+}
+
+static void op32_tx_suspend(struct b43_dmaring *ring)
+{
+	b43_dma_write(ring, B43_DMA32_TXCTL, b43_dma_read(ring, B43_DMA32_TXCTL)
+		      | B43_DMA32_TXSUSPEND);
+}
+
+static void op32_tx_resume(struct b43_dmaring *ring)
+{
+	b43_dma_write(ring, B43_DMA32_TXCTL, b43_dma_read(ring, B43_DMA32_TXCTL)
+		      & ~B43_DMA32_TXSUSPEND);
+}
+
+static int op32_get_current_rxslot(struct b43_dmaring *ring)
+{
+	u32 val;
+
+	val = b43_dma_read(ring, B43_DMA32_RXSTATUS);
+	val &= B43_DMA32_RXDPTR;
+
+	return (val / sizeof(struct b43_dmadesc32));
+}
+
+static void op32_set_current_rxslot(struct b43_dmaring *ring, int slot)
+{
+	b43_dma_write(ring, B43_DMA32_RXINDEX,
+		      (u32) (slot * sizeof(struct b43_dmadesc32)));
+}
+
+static const struct b43_dma_ops dma32_ops = {
+	.idx2desc = op32_idx2desc,
+	.fill_descriptor = op32_fill_descriptor,
+	.poke_tx = op32_poke_tx,
+	.tx_suspend = op32_tx_suspend,
+	.tx_resume = op32_tx_resume,
+	.get_current_rxslot = op32_get_current_rxslot,
+	.set_current_rxslot = op32_set_current_rxslot,
+};
+
+/* 64bit DMA ops. */
+static
+struct b43_dmadesc_generic *op64_idx2desc(struct b43_dmaring *ring,
+					  int slot,
+					  struct b43_dmadesc_meta **meta)
+{
+	struct b43_dmadesc64 *desc;
+
+	*meta = &(ring->meta[slot]);
+	desc = ring->descbase;
+	desc = &(desc[slot]);
+
+	return (struct b43_dmadesc_generic *)desc;
+}
+
+static void op64_fill_descriptor(struct b43_dmaring *ring,
+				 struct b43_dmadesc_generic *desc,
+				 dma_addr_t dmaaddr, u16 bufsize,
+				 int start, int end, int irq)
+{
+	struct b43_dmadesc64 *descbase = ring->descbase;
+	int slot;
+	u32 ctl0 = 0, ctl1 = 0;
+	u32 addrlo, addrhi;
+	u32 addrext;
+
+	slot = (int)(&(desc->dma64) - descbase);
+	B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
+
+	addrlo = (u32) (dmaaddr & 0xFFFFFFFF);
+	addrhi = (((u64) dmaaddr >> 32) & ~SSB_DMA_TRANSLATION_MASK);
+	addrext = (((u64) dmaaddr >> 32) & SSB_DMA_TRANSLATION_MASK)
+	    >> SSB_DMA_TRANSLATION_SHIFT;
+	addrhi |= ssb_dma_translation(ring->dev->dev);
+	if (slot == ring->nr_slots - 1)
+		ctl0 |= B43_DMA64_DCTL0_DTABLEEND;
+	if (start)
+		ctl0 |= B43_DMA64_DCTL0_FRAMESTART;
+	if (end)
+		ctl0 |= B43_DMA64_DCTL0_FRAMEEND;
+	if (irq)
+		ctl0 |= B43_DMA64_DCTL0_IRQ;
+	ctl1 |= (bufsize - ring->frameoffset)
+	    & B43_DMA64_DCTL1_BYTECNT;
+	ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT)
+	    & B43_DMA64_DCTL1_ADDREXT_MASK;
+
+	desc->dma64.control0 = cpu_to_le32(ctl0);
+	desc->dma64.control1 = cpu_to_le32(ctl1);
+	desc->dma64.address_low = cpu_to_le32(addrlo);
+	desc->dma64.address_high = cpu_to_le32(addrhi);
+}
+
+static void op64_poke_tx(struct b43_dmaring *ring, int slot)
+{
+	b43_dma_write(ring, B43_DMA64_TXINDEX,
+		      (u32) (slot * sizeof(struct b43_dmadesc64)));
+}
+
+static void op64_tx_suspend(struct b43_dmaring *ring)
+{
+	b43_dma_write(ring, B43_DMA64_TXCTL, b43_dma_read(ring, B43_DMA64_TXCTL)
+		      | B43_DMA64_TXSUSPEND);
+}
+
+static void op64_tx_resume(struct b43_dmaring *ring)
+{
+	b43_dma_write(ring, B43_DMA64_TXCTL, b43_dma_read(ring, B43_DMA64_TXCTL)
+		      & ~B43_DMA64_TXSUSPEND);
+}
+
+static int op64_get_current_rxslot(struct b43_dmaring *ring)
+{
+	u32 val;
+
+	val = b43_dma_read(ring, B43_DMA64_RXSTATUS);
+	val &= B43_DMA64_RXSTATDPTR;
+
+	return (val / sizeof(struct b43_dmadesc64));
+}
+
+static void op64_set_current_rxslot(struct b43_dmaring *ring, int slot)
+{
+	b43_dma_write(ring, B43_DMA64_RXINDEX,
+		      (u32) (slot * sizeof(struct b43_dmadesc64)));
+}
+
+static const struct b43_dma_ops dma64_ops = {
+	.idx2desc = op64_idx2desc,
+	.fill_descriptor = op64_fill_descriptor,
+	.poke_tx = op64_poke_tx,
+	.tx_suspend = op64_tx_suspend,
+	.tx_resume = op64_tx_resume,
+	.get_current_rxslot = op64_get_current_rxslot,
+	.set_current_rxslot = op64_set_current_rxslot,
+};
+
+static inline int free_slots(struct b43_dmaring *ring)
+{
+	return (ring->nr_slots - ring->used_slots);
+}
+
+static inline int next_slot(struct b43_dmaring *ring, int slot)
+{
+	B43_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 b43_dmaring *ring, int slot)
+{
+	B43_WARN_ON(!(slot >= 0 && slot <= ring->nr_slots - 1));
+	if (slot == 0)
+		return ring->nr_slots - 1;
+	return slot - 1;
+}
+
+#ifdef CONFIG_B43_DEBUG
+static void update_max_used_slots(struct b43_dmaring *ring,
+				  int current_used_slots)
+{
+	if (current_used_slots <= ring->max_used_slots)
+		return;
+	ring->max_used_slots = current_used_slots;
+	if (b43_debug(ring->dev, B43_DBG_DMAVERBOSE)) {
+		b43dbg(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 b43_dmaring *ring, int current_used_slots)
+{
+}
+#endif /* DEBUG */
+
+/* Request a slot for usage. */
+static inline int request_slot(struct b43_dmaring *ring)
+{
+	int slot;
+
+	B43_WARN_ON(!ring->tx);
+	B43_WARN_ON(ring->stopped);
+	B43_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 b43-ring mapping */
+static struct b43_dmaring *priority_to_txring(struct b43_wldev *dev,
+					      int queue_priority)
+{
+	struct b43_dmaring *ring;
+
+/*FIXME: For now we always run on TX-ring-1 */
+	return dev->dma.tx_ring1;
+
+	/* 0 = highest priority */
+	switch (queue_priority) {
+	default:
+		B43_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;
+}
+
+/* Bcm43xx-ring to mac80211-queue mapping */
+static inline int txring_to_priority(struct b43_dmaring *ring)
+{
+	static const u8 idx_to_prio[] = { 3, 2, 1, 0, 4, 5, };
+
+/*FIXME: have only one queue, for now */
+	return 0;
+
+	return idx_to_prio[ring->index];
+}
+
+u16 b43_dmacontroller_base(int dma64bit, int controller_idx)
+{
+	static const u16 map64[] = {
+		B43_MMIO_DMA64_BASE0,
+		B43_MMIO_DMA64_BASE1,
+		B43_MMIO_DMA64_BASE2,
+		B43_MMIO_DMA64_BASE3,
+		B43_MMIO_DMA64_BASE4,
+		B43_MMIO_DMA64_BASE5,
+	};
+	static const u16 map32[] = {
+		B43_MMIO_DMA32_BASE0,
+		B43_MMIO_DMA32_BASE1,
+		B43_MMIO_DMA32_BASE2,
+		B43_MMIO_DMA32_BASE3,
+		B43_MMIO_DMA32_BASE4,
+		B43_MMIO_DMA32_BASE5,
+	};
+
+	if (dma64bit) {
+		B43_WARN_ON(!(controller_idx >= 0 &&
+			      controller_idx < ARRAY_SIZE(map64)));
+		return map64[controller_idx];
+	}
+	B43_WARN_ON(!(controller_idx >= 0 &&
+		      controller_idx < ARRAY_SIZE(map32)));
+	return map32[controller_idx];
+}
+
+static inline
+    dma_addr_t map_descbuffer(struct b43_dmaring *ring,
+			      unsigned char *buf, size_t len, int tx)
+{
+	dma_addr_t dmaaddr;
+
+	if (tx) {
+		dmaaddr = dma_map_single(ring->dev->dev->dev,
+					 buf, len, DMA_TO_DEVICE);
+	} else {
+		dmaaddr = dma_map_single(ring->dev->dev->dev,
+					 buf, len, DMA_FROM_DEVICE);
+	}
+
+	return dmaaddr;
+}
+
+static inline
+    void unmap_descbuffer(struct b43_dmaring *ring,
+			  dma_addr_t addr, size_t len, int tx)
+{
+	if (tx) {
+		dma_unmap_single(ring->dev->dev->dev, addr, len, DMA_TO_DEVICE);
+	} else {
+		dma_unmap_single(ring->dev->dev->dev,
+				 addr, len, DMA_FROM_DEVICE);
+	}
+}
+
+static inline
+    void sync_descbuffer_for_cpu(struct b43_dmaring *ring,
+				 dma_addr_t addr, size_t len)
+{
+	B43_WARN_ON(ring->tx);
+	dma_sync_single_for_cpu(ring->dev->dev->dev,
+				addr, len, DMA_FROM_DEVICE);
+}
+
+static inline
+    void sync_descbuffer_for_device(struct b43_dmaring *ring,
+				    dma_addr_t addr, size_t len)
+{
+	B43_WARN_ON(ring->tx);
+	dma_sync_single_for_device(ring->dev->dev->dev,
+				   addr, len, DMA_FROM_DEVICE);
+}
+
+static inline
+    void free_descriptor_buffer(struct b43_dmaring *ring,
+				struct b43_dmadesc_meta *meta)
+{
+	if (meta->skb) {
+		dev_kfree_skb_any(meta->skb);
+		meta->skb = NULL;
+	}
+}
+
+static int alloc_ringmemory(struct b43_dmaring *ring)
+{
+	struct device *dev = ring->dev->dev->dev;
+
+	ring->descbase = dma_alloc_coherent(dev, B43_DMA_RINGMEMSIZE,
+					    &(ring->dmabase), GFP_KERNEL);
+	if (!ring->descbase) {
+		b43err(ring->dev->wl, "DMA ringmemory allocation failed\n");
+		return -ENOMEM;
+	}
+	memset(ring->descbase, 0, B43_DMA_RINGMEMSIZE);
+
+	return 0;
+}
+
+static void free_ringmemory(struct b43_dmaring *ring)
+{
+	struct device *dev = ring->dev->dev->dev;
+
+	dma_free_coherent(dev, B43_DMA_RINGMEMSIZE,
+			  ring->descbase, ring->dmabase);
+}
+
+/* Reset the RX DMA channel */
+int b43_dmacontroller_rx_reset(struct b43_wldev *dev, u16 mmio_base, int dma64)
+{
+	int i;
+	u32 value;
+	u16 offset;
+
+	might_sleep();
+
+	offset = dma64 ? B43_DMA64_RXCTL : B43_DMA32_RXCTL;
+	b43_write32(dev, mmio_base + offset, 0);
+	for (i = 0; i < 10; i++) {
+		offset = dma64 ? B43_DMA64_RXSTATUS : B43_DMA32_RXSTATUS;
+		value = b43_read32(dev, mmio_base + offset);
+		if (dma64) {
+			value &= B43_DMA64_RXSTAT;
+			if (value == B43_DMA64_RXSTAT_DISABLED) {
+				i = -1;
+				break;
+			}
+		} else {
+			value &= B43_DMA32_RXSTATE;
+			if (value == B43_DMA32_RXSTAT_DISABLED) {
+				i = -1;
+				break;
+			}
+		}
+		msleep(1);
+	}
+	if (i != -1) {
+		b43err(dev->wl, "DMA RX reset timed out\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/* Reset the RX DMA channel */
+int b43_dmacontroller_tx_reset(struct b43_wldev *dev, u16 mmio_base, int dma64)
+{
+	int i;
+	u32 value;
+	u16 offset;
+
+	might_sleep();
+
+	for (i = 0; i < 10; i++) {
+		offset = dma64 ? B43_DMA64_TXSTATUS : B43_DMA32_TXSTATUS;
+		value = b43_read32(dev, mmio_base + offset);
+		if (dma64) {
+			value &= B43_DMA64_TXSTAT;
+			if (value == B43_DMA64_TXSTAT_DISABLED ||
+			    value == B43_DMA64_TXSTAT_IDLEWAIT ||
+			    value == B43_DMA64_TXSTAT_STOPPED)
+				break;
+		} else {
+			value &= B43_DMA32_TXSTATE;
+			if (value == B43_DMA32_TXSTAT_DISABLED ||
+			    value == B43_DMA32_TXSTAT_IDLEWAIT ||
+			    value == B43_DMA32_TXSTAT_STOPPED)
+				break;
+		}
+		msleep(1);
+	}
+	offset = dma64 ? B43_DMA64_TXCTL : B43_DMA32_TXCTL;
+	b43_write32(dev, mmio_base + offset, 0);
+	for (i = 0; i < 10; i++) {
+		offset = dma64 ? B43_DMA64_TXSTATUS : B43_DMA32_TXSTATUS;
+		value = b43_read32(dev, mmio_base + offset);
+		if (dma64) {
+			value &= B43_DMA64_TXSTAT;
+			if (value == B43_DMA64_TXSTAT_DISABLED) {
+				i = -1;
+				break;
+			}
+		} else {
+			value &= B43_DMA32_TXSTATE;
+			if (value == B43_DMA32_TXSTAT_DISABLED) {
+				i = -1;
+				break;
+			}
+		}
+		msleep(1);
+	}
+	if (i != -1) {
+		b43err(dev->wl, "DMA TX reset timed out\n");
+		return -ENODEV;
+	}
+	/* ensure the reset is completed. */
+	msleep(1);
+
+	return 0;
+}
+
+static int setup_rx_descbuffer(struct b43_dmaring *ring,
+			       struct b43_dmadesc_generic *desc,
+			       struct b43_dmadesc_meta *meta, gfp_t gfp_flags)
+{
+	struct b43_rxhdr_fw4 *rxhdr;
+	struct b43_hwtxstatus *txstat;
+	dma_addr_t dmaaddr;
+	struct sk_buff *skb;
+
+	B43_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 (dma_mapping_error(dmaaddr)) {
+		/* 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 (dma_mapping_error(dmaaddr)) {
+		dev_kfree_skb_any(skb);
+		return -EIO;
+	}
+
+	meta->skb = skb;
+	meta->dmaaddr = dmaaddr;
+	ring->ops->fill_descriptor(ring, desc, dmaaddr,
+				   ring->rx_buffersize, 0, 0, 0);
+
+	rxhdr = (struct b43_rxhdr_fw4 *)(skb->data);
+	rxhdr->frame_len = 0;
+	txstat = (struct b43_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 b43_dmaring *ring)
+{
+	int i, err = -ENOMEM;
+	struct b43_dmadesc_generic *desc;
+	struct b43_dmadesc_meta *meta;
+
+	for (i = 0; i < ring->nr_slots; i++) {
+		desc = ring->ops->idx2desc(ring, i, &meta);
+
+		err = setup_rx_descbuffer(ring, desc, meta, GFP_KERNEL);
+		if (err) {
+			b43err(ring->dev->wl,
+			       "Failed to allocate initial descbuffers\n");
+			goto err_unwind;
+		}
+	}
+	mb();
+	ring->used_slots = ring->nr_slots;
+	err = 0;
+      out:
+	return err;
+
+      err_unwind:
+	for (i--; i >= 0; i--) {
+		desc = ring->ops->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 b43_dmaring *ring)
+{
+	int err = 0;
+	u32 value;
+	u32 addrext;
+	u32 trans = ssb_dma_translation(ring->dev->dev);
+
+	if (ring->tx) {
+		if (ring->dma64) {
+			u64 ringbase = (u64) (ring->dmabase);
+
+			addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK)
+			    >> SSB_DMA_TRANSLATION_SHIFT;
+			value = B43_DMA64_TXENABLE;
+			value |= (addrext << B43_DMA64_TXADDREXT_SHIFT)
+			    & B43_DMA64_TXADDREXT_MASK;
+			b43_dma_write(ring, B43_DMA64_TXCTL, value);
+			b43_dma_write(ring, B43_DMA64_TXRINGLO,
+				      (ringbase & 0xFFFFFFFF));
+			b43_dma_write(ring, B43_DMA64_TXRINGHI,
+				      ((ringbase >> 32) &
+				       ~SSB_DMA_TRANSLATION_MASK)
+				      | trans);
+		} else {
+			u32 ringbase = (u32) (ring->dmabase);
+
+			addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
+			    >> SSB_DMA_TRANSLATION_SHIFT;
+			value = B43_DMA32_TXENABLE;
+			value |= (addrext << B43_DMA32_TXADDREXT_SHIFT)
+			    & B43_DMA32_TXADDREXT_MASK;
+			b43_dma_write(ring, B43_DMA32_TXCTL, value);
+			b43_dma_write(ring, B43_DMA32_TXRING,
+				      (ringbase & ~SSB_DMA_TRANSLATION_MASK)
+				      | trans);
+		}
+	} else {
+		err = alloc_initial_descbuffers(ring);
+		if (err)
+			goto out;
+		if (ring->dma64) {
+			u64 ringbase = (u64) (ring->dmabase);
+
+			addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK)
+			    >> SSB_DMA_TRANSLATION_SHIFT;
+			value = (ring->frameoffset << B43_DMA64_RXFROFF_SHIFT);
+			value |= B43_DMA64_RXENABLE;
+			value |= (addrext << B43_DMA64_RXADDREXT_SHIFT)
+			    & B43_DMA64_RXADDREXT_MASK;
+			b43_dma_write(ring, B43_DMA64_RXCTL, value);
+			b43_dma_write(ring, B43_DMA64_RXRINGLO,
+				      (ringbase & 0xFFFFFFFF));
+			b43_dma_write(ring, B43_DMA64_RXRINGHI,
+				      ((ringbase >> 32) &
+				       ~SSB_DMA_TRANSLATION_MASK)
+				      | trans);
+			b43_dma_write(ring, B43_DMA64_RXINDEX, 200);
+		} else {
+			u32 ringbase = (u32) (ring->dmabase);
+
+			addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
+			    >> SSB_DMA_TRANSLATION_SHIFT;
+			value = (ring->frameoffset << B43_DMA32_RXFROFF_SHIFT);
+			value |= B43_DMA32_RXENABLE;
+			value |= (addrext << B43_DMA32_RXADDREXT_SHIFT)
+			    & B43_DMA32_RXADDREXT_MASK;
+			b43_dma_write(ring, B43_DMA32_RXCTL, value);
+			b43_dma_write(ring, B43_DMA32_RXRING,
+				      (ringbase & ~SSB_DMA_TRANSLATION_MASK)
+				      | trans);
+			b43_dma_write(ring, B43_DMA32_RXINDEX, 200);
+		}
+	}
+
+      out:
+	return err;
+}
+
+/* Shutdown the DMA controller. */
+static void dmacontroller_cleanup(struct b43_dmaring *ring)
+{
+	if (ring->tx) {
+		b43_dmacontroller_tx_reset(ring->dev, ring->mmio_base,
+					   ring->dma64);
+		if (ring->dma64) {
+			b43_dma_write(ring, B43_DMA64_TXRINGLO, 0);
+			b43_dma_write(ring, B43_DMA64_TXRINGHI, 0);
+		} else
+			b43_dma_write(ring, B43_DMA32_TXRING, 0);
+	} else {
+		b43_dmacontroller_rx_reset(ring->dev, ring->mmio_base,
+					   ring->dma64);
+		if (ring->dma64) {
+			b43_dma_write(ring, B43_DMA64_RXRINGLO, 0);
+			b43_dma_write(ring, B43_DMA64_RXRINGHI, 0);
+		} else
+			b43_dma_write(ring, B43_DMA32_RXRING, 0);
+	}
+}
+
+static void free_all_descbuffers(struct b43_dmaring *ring)
+{
+	struct b43_dmadesc_generic *desc;
+	struct b43_dmadesc_meta *meta;
+	int i;
+
+	if (!ring->used_slots)
+		return;
+	for (i = 0; i < ring->nr_slots; i++) {
+		desc = ring->ops->idx2desc(ring, i, &meta);
+
+		if (!meta->skb) {
+			B43_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);
+	}
+}
+
+static u64 supported_dma_mask(struct b43_wldev *dev)
+{
+	u32 tmp;
+	u16 mmio_base;
+
+	tmp = b43_read32(dev, SSB_TMSHIGH);
+	if (tmp & SSB_TMSHIGH_DMA64)
+		return DMA_64BIT_MASK;
+	mmio_base = b43_dmacontroller_base(0, 0);
+	b43_write32(dev, mmio_base + B43_DMA32_TXCTL, B43_DMA32_TXADDREXT_MASK);
+	tmp = b43_read32(dev, mmio_base + B43_DMA32_TXCTL);
+	if (tmp & B43_DMA32_TXADDREXT_MASK)
+		return DMA_32BIT_MASK;
+
+	return DMA_30BIT_MASK;
+}
+
+/* Main initialization function. */
+static
+struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
+				      int controller_index,
+				      int for_tx, int dma64)
+{
+	struct b43_dmaring *ring;
+	int err;
+	int nr_slots;
+	dma_addr_t dma_test;
+
+	ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+	if (!ring)
+		goto out;
+
+	nr_slots = B43_RXRING_SLOTS;
+	if (for_tx)
+		nr_slots = B43_TXRING_SLOTS;
+
+	ring->meta = kcalloc(nr_slots, sizeof(struct b43_dmadesc_meta),
+			     GFP_KERNEL);
+	if (!ring->meta)
+		goto err_kfree_ring;
+	if (for_tx) {
+		ring->txhdr_cache = kcalloc(nr_slots,
+					    sizeof(struct b43_txhdr_fw4),
+					    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->dev,
+					  ring->txhdr_cache,
+					  sizeof(struct b43_txhdr_fw4),
+					  DMA_TO_DEVICE);
+
+		if (dma_mapping_error(dma_test)) {
+			/* ugh realloc */
+			kfree(ring->txhdr_cache);
+			ring->txhdr_cache = kcalloc(nr_slots,
+						    sizeof(struct
+							   b43_txhdr_fw4),
+						    GFP_KERNEL | GFP_DMA);
+			if (!ring->txhdr_cache)
+				goto err_kfree_meta;
+
+			dma_test = dma_map_single(dev->dev->dev,
+						  ring->txhdr_cache,
+						  sizeof(struct b43_txhdr_fw4),
+						  DMA_TO_DEVICE);
+
+			if (dma_mapping_error(dma_test))
+				goto err_kfree_txhdr_cache;
+		}
+
+		dma_unmap_single(dev->dev->dev,
+				 dma_test, sizeof(struct b43_txhdr_fw4),
+				 DMA_TO_DEVICE);
+	}
+
+	ring->dev = dev;
+	ring->nr_slots = nr_slots;
+	ring->mmio_base = b43_dmacontroller_base(dma64, controller_index);
+	ring->index = controller_index;
+	ring->dma64 = !!dma64;
+	if (dma64)
+		ring->ops = &dma64_ops;
+	else
+		ring->ops = &dma32_ops;
+	if (for_tx) {
+		ring->tx = 1;
+		ring->current_slot = -1;
+	} else {
+		if (ring->index == 0) {
+			ring->rx_buffersize = B43_DMA0_RX_BUFFERSIZE;
+			ring->frameoffset = B43_DMA0_RX_FRAMEOFFSET;
+		} else if (ring->index == 3) {
+			ring->rx_buffersize = B43_DMA3_RX_BUFFERSIZE;
+			ring->frameoffset = B43_DMA3_RX_FRAMEOFFSET;
+		} else
+			B43_WARN_ON(1);
+	}
+	spin_lock_init(&ring->lock);
+#ifdef CONFIG_B43_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 b43_destroy_dmaring(struct b43_dmaring *ring)
+{
+	if (!ring)
+		return;
+
+	b43dbg(ring->dev->wl, "DMA-%s 0x%04X (%s) max used slots: %d/%d\n",
+	       (ring->dma64) ? "64" : "32",
+	       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 b43_dma_free(struct b43_wldev *dev)
+{
+	struct b43_dma *dma;
+
+	if (b43_using_pio(dev))
+		return;
+	dma = &dev->dma;
+
+	b43_destroy_dmaring(dma->rx_ring3);
+	dma->rx_ring3 = NULL;
+	b43_destroy_dmaring(dma->rx_ring0);
+	dma->rx_ring0 = NULL;
+
+	b43_destroy_dmaring(dma->tx_ring5);
+	dma->tx_ring5 = NULL;
+	b43_destroy_dmaring(dma->tx_ring4);
+	dma->tx_ring4 = NULL;
+	b43_destroy_dmaring(dma->tx_ring3);
+	dma->tx_ring3 = NULL;
+	b43_destroy_dmaring(dma->tx_ring2);
+	dma->tx_ring2 = NULL;
+	b43_destroy_dmaring(dma->tx_ring1);
+	dma->tx_ring1 = NULL;
+	b43_destroy_dmaring(dma->tx_ring0);
+	dma->tx_ring0 = NULL;
+}
+
+int b43_dma_init(struct b43_wldev *dev)
+{
+	struct b43_dma *dma = &dev->dma;
+	struct b43_dmaring *ring;
+	int err;
+	u64 dmamask;
+	int dma64 = 0;
+
+	dmamask = supported_dma_mask(dev);
+	if (dmamask == DMA_64BIT_MASK)
+		dma64 = 1;
+
+	err = ssb_dma_set_mask(dev->dev, dmamask);
+	if (err) {
+#ifdef B43_PIO
+		b43warn(dev->wl, "DMA for this device not supported. "
+			"Falling back to PIO\n");
+		dev->__using_pio = 1;
+		return -EAGAIN;
+#else
+		b43err(dev->wl, "DMA for this device not supported and "
+		       "no PIO support compiled in\n");
+		return -EOPNOTSUPP;
+#endif
+	}
+
+	err = -ENOMEM;
+	/* setup TX DMA channels. */
+	ring = b43_setup_dmaring(dev, 0, 1, dma64);
+	if (!ring)
+		goto out;
+	dma->tx_ring0 = ring;
+
+	ring = b43_setup_dmaring(dev, 1, 1, dma64);
+	if (!ring)
+		goto err_destroy_tx0;
+	dma->tx_ring1 = ring;
+
+	ring = b43_setup_dmaring(dev, 2, 1, dma64);
+	if (!ring)
+		goto err_destroy_tx1;
+	dma->tx_ring2 = ring;
+
+	ring = b43_setup_dmaring(dev, 3, 1, dma64);
+	if (!ring)
+		goto err_destroy_tx2;
+	dma->tx_ring3 = ring;
+
+	ring = b43_setup_dmaring(dev, 4, 1, dma64);
+	if (!ring)
+		goto err_destroy_tx3;
+	dma->tx_ring4 = ring;
+
+	ring = b43_setup_dmaring(dev, 5, 1, dma64);
+	if (!ring)
+		goto err_destroy_tx4;
+	dma->tx_ring5 = ring;
+
+	/* setup RX DMA channels. */
+	ring = b43_setup_dmaring(dev, 0, 0, dma64);
+	if (!ring)
+		goto err_destroy_tx5;
+	dma->rx_ring0 = ring;
+
+	if (dev->dev->id.revision < 5) {
+		ring = b43_setup_dmaring(dev, 3, 0, dma64);
+		if (!ring)
+			goto err_destroy_rx0;
+		dma->rx_ring3 = ring;
+	}
+
+	b43dbg(dev->wl, "%d-bit DMA initialized\n",
+	       (dmamask == DMA_64BIT_MASK) ? 64 :
+	       (dmamask == DMA_32BIT_MASK) ? 32 : 30);
+	err = 0;
+      out:
+	return err;
+
+      err_destroy_rx0:
+	b43_destroy_dmaring(dma->rx_ring0);
+	dma->rx_ring0 = NULL;
+      err_destroy_tx5:
+	b43_destroy_dmaring(dma->tx_ring5);
+	dma->tx_ring5 = NULL;
+      err_destroy_tx4:
+	b43_destroy_dmaring(dma->tx_ring4);
+	dma->tx_ring4 = NULL;
+      err_destroy_tx3:
+	b43_destroy_dmaring(dma->tx_ring3);
+	dma->tx_ring3 = NULL;
+      err_destroy_tx2:
+	b43_destroy_dmaring(dma->tx_ring2);
+	dma->tx_ring2 = NULL;
+      err_destroy_tx1:
+	b43_destroy_dmaring(dma->tx_ring1);
+	dma->tx_ring1 = NULL;
+      err_destroy_tx0:
+	b43_destroy_dmaring(dma->tx_ring0);
+	dma->tx_ring0 = NULL;
+	goto out;
+}
+
+/* Generate a cookie for the TX header. */
+static u16 generate_cookie(struct b43_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;
+	}
+	B43_WARN_ON(slot & ~0x0FFF);
+	cookie |= (u16) slot;
+
+	return cookie;
+}
+
+/* Inspect a cookie and find out to which controller/slot it belongs. */
+static
+struct b43_dmaring *parse_cookie(struct b43_wldev *dev, u16 cookie, int *slot)
+{
+	struct b43_dma *dma = &dev->dma;
+	struct b43_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:
+		B43_WARN_ON(1);
+	}
+	*slot = (cookie & 0x0FFF);
+	B43_WARN_ON(!(ring && *slot >= 0 && *slot < ring->nr_slots));
+
+	return ring;
+}
+
+static int dma_tx_fragment(struct b43_dmaring *ring,
+			   struct sk_buff *skb,
+			   struct ieee80211_tx_control *ctl)
+{
+	const struct b43_dma_ops *ops = ring->ops;
+	u8 *header;
+	int slot;
+	int err;
+	struct b43_dmadesc_generic *desc;
+	struct b43_dmadesc_meta *meta;
+	struct b43_dmadesc_meta *meta_hdr;
+	struct sk_buff *bounce_skb;
+
+#define SLOTS_PER_PACKET  2
+	B43_WARN_ON(skb_shinfo(skb)->nr_frags);
+
+	/* Get a slot for the header. */
+	slot = request_slot(ring);
+	desc = ops->idx2desc(ring, slot, &meta_hdr);
+	memset(meta_hdr, 0, sizeof(*meta_hdr));
+
+	header = &(ring->txhdr_cache[slot * sizeof(struct b43_txhdr_fw4)]);
+	b43_generate_txhdr(ring->dev, header,
+			   skb->data, skb->len, ctl,
+			   generate_cookie(ring, slot));
+
+	meta_hdr->dmaaddr = map_descbuffer(ring, (unsigned char *)header,
+					   sizeof(struct b43_txhdr_fw4), 1);
+	if (dma_mapping_error(meta_hdr->dmaaddr))
+		return -EIO;
+	ops->fill_descriptor(ring, desc, meta_hdr->dmaaddr,
+			     sizeof(struct b43_txhdr_fw4), 1, 0, 0);
+
+	/* Get a slot for the payload. */
+	slot = request_slot(ring);
+	desc = ops->idx2desc(ring, slot, &meta);
+	memset(meta, 0, sizeof(*meta));
+
+	memcpy(&meta->txstat.control, ctl, sizeof(*ctl));
+	meta->skb = skb;
+	meta->is_last_fragment = 1;
+
+	meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
+	/* create a bounce buffer in zone_dma on mapping failure. */
+	if (dma_mapping_error(meta->dmaaddr)) {
+		bounce_skb = __dev_alloc_skb(skb->len, GFP_ATOMIC | GFP_DMA);
+		if (!bounce_skb) {
+			err = -ENOMEM;
+			goto out_unmap_hdr;
+		}
+
+		memcpy(skb_put(bounce_skb, skb->len), skb->data, skb->len);
+		dev_kfree_skb_any(skb);
+		skb = bounce_skb;
+		meta->skb = skb;
+		meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
+		if (dma_mapping_error(meta->dmaaddr)) {
+			err = -EIO;
+			goto out_free_bounce;
+		}
+	}
+
+	ops->fill_descriptor(ring, desc, meta->dmaaddr, skb->len, 0, 1, 1);
+
+	/* Now transfer the whole frame. */
+	wmb();
+	ops->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 b43_txhdr_fw4), 1);
+	return err;
+}
+
+static inline int should_inject_overflow(struct b43_dmaring *ring)
+{
+#ifdef CONFIG_B43_DEBUG
+	if (unlikely(b43_debug(ring->dev, B43_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;
+			b43dbg(ring->dev->wl,
+			       "Injecting TX ring overflow on "
+			       "DMA controller %d\n", ring->index);
+			return 1;
+		}
+	}
+#endif /* CONFIG_B43_DEBUG */
+	return 0;
+}
+
+int b43_dma_tx(struct b43_wldev *dev,
+	       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
+{
+	struct b43_dmaring *ring;
+	int err = 0;
+	unsigned long flags;
+
+	ring = priority_to_txring(dev, ctl->queue);
+	spin_lock_irqsave(&ring->lock, flags);
+	B43_WARN_ON(!ring->tx);
+	if (unlikely(free_slots(ring) < SLOTS_PER_PACKET)) {
+		b43warn(dev->wl, "DMA queue overflow\n");
+		err = -ENOSPC;
+		goto out_unlock;
+	}
+	/* Check if the queue was stopped in mac80211,
+	 * but we got called nevertheless.
+	 * That would be a mac80211 bug. */
+	B43_WARN_ON(ring->stopped);
+
+	err = dma_tx_fragment(ring, skb, ctl);
+	if (unlikely(err)) {
+		b43err(dev->wl, "DMA tx mapping failure\n");
+		goto out_unlock;
+	}
+	ring->nr_tx_packets++;
+	if ((free_slots(ring) < SLOTS_PER_PACKET) ||
+	    should_inject_overflow(ring)) {
+		/* This TX ring is full. */
+		ieee80211_stop_queue(dev->wl->hw, txring_to_priority(ring));
+		ring->stopped = 1;
+		if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
+			b43dbg(dev->wl, "Stopped TX ring %d\n", ring->index);
+		}
+	}
+      out_unlock:
+	spin_unlock_irqrestore(&ring->lock, flags);
+
+	return err;
+}
+
+void b43_dma_handle_txstatus(struct b43_wldev *dev,
+			     const struct b43_txstatus *status)
+{
+	const struct b43_dma_ops *ops;
+	struct b43_dmaring *ring;
+	struct b43_dmadesc_generic *desc;
+	struct b43_dmadesc_meta *meta;
+	int slot;
+
+	ring = parse_cookie(dev, status->cookie, &slot);
+	if (unlikely(!ring))
+		return;
+	B43_WARN_ON(!irqs_disabled());
+	spin_lock(&ring->lock);
+
+	B43_WARN_ON(!ring->tx);
+	ops = ring->ops;
+	while (1) {
+		B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
+		desc = ops->idx2desc(ring, slot, &meta);
+
+		if (meta->skb)
+			unmap_descbuffer(ring, meta->dmaaddr, meta->skb->len,
+					 1);
+		else
+			unmap_descbuffer(ring, meta->dmaaddr,
+					 sizeof(struct b43_txhdr_fw4), 1);
+
+		if (meta->is_last_fragment) {
+			B43_WARN_ON(!meta->skb);
+			/* Call back to inform the ieee80211 subsystem about the
+			 * status of the transmission.
+			 * Some fields of txstat are already filled in dma_tx().
+			 */
+			if (status->acked) {
+				meta->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+			} else {
+				if (!(meta->txstat.control.flags
+				      & IEEE80211_TXCTL_NO_ACK))
+					meta->txstat.excessive_retries = 1;
+			}
+			if (status->frame_count == 0) {
+				/* The frame was not transmitted at all. */
+				meta->txstat.retry_count = 0;
+			} else
+				meta->txstat.retry_count = status->frame_count - 1;
+			ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb,
+						    &(meta->txstat));
+			/* 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.
+			 */
+			B43_WARN_ON(meta->skb);
+		}
+
+		/* 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) {
+		B43_WARN_ON(free_slots(ring) < SLOTS_PER_PACKET);
+		ieee80211_wake_queue(dev->wl->hw, txring_to_priority(ring));
+		ring->stopped = 0;
+		if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
+			b43dbg(dev->wl, "Woke up TX ring %d\n", ring->index);
+		}
+	}
+
+	spin_unlock(&ring->lock);
+}
+
+void b43_dma_get_tx_stats(struct b43_wldev *dev,
+			  struct ieee80211_tx_queue_stats *stats)
+{
+	const int nr_queues = dev->wl->hw->queues;
+	struct b43_dmaring *ring;
+	struct ieee80211_tx_queue_stats_data *data;
+	unsigned long flags;
+	int i;
+
+	for (i = 0; i < nr_queues; i++) {
+		data = &(stats->data[i]);
+		ring = priority_to_txring(dev, i);
+
+		spin_lock_irqsave(&ring->lock, flags);
+		data->len = ring->used_slots / SLOTS_PER_PACKET;
+		data->limit = ring->nr_slots / SLOTS_PER_PACKET;
+		data->count = ring->nr_tx_packets;
+		spin_unlock_irqrestore(&ring->lock, flags);
+	}
+}
+
+static void dma_rx(struct b43_dmaring *ring, int *slot)
+{
+	const struct b43_dma_ops *ops = ring->ops;
+	struct b43_dmadesc_generic *desc;
+	struct b43_dmadesc_meta *meta;
+	struct b43_rxhdr_fw4 *rxhdr;
+	struct sk_buff *skb;
+	u16 len;
+	int err;
+	dma_addr_t dmaaddr;
+
+	desc = ops->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 b43_hwtxstatus *hw = (struct b43_hwtxstatus *)skb->data;
+		int i = 0;
+
+		while (hw->cookie == 0) {
+			if (i > 100)
+				break;
+			i++;
+			udelay(2);
+			barrier();
+		}
+		b43_handle_hwtxstatus(ring->dev, hw);
+		/* recycle the descriptor buffer. */
+		sync_descbuffer_for_device(ring, meta->dmaaddr,
+					   ring->rx_buffersize);
+
+		return;
+	}
+	rxhdr = (struct b43_rxhdr_fw4 *)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 = ops->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;
+		}
+		b43err(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)) {
+		b43dbg(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);
+
+	b43_rx(ring->dev, skb, rxhdr);
+      drop:
+	return;
+}
+
+void b43_dma_rx(struct b43_dmaring *ring)
+{
+	const struct b43_dma_ops *ops = ring->ops;
+	int slot, current_slot;
+	int used_slots = 0;
+
+	B43_WARN_ON(ring->tx);
+	current_slot = ops->get_current_rxslot(ring);
+	B43_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);
+	}
+	ops->set_current_rxslot(ring, slot);
+	ring->current_slot = slot;
+}
+
+static void b43_dma_tx_suspend_ring(struct b43_dmaring *ring)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&ring->lock, flags);
+	B43_WARN_ON(!ring->tx);
+	ring->ops->tx_suspend(ring);
+	spin_unlock_irqrestore(&ring->lock, flags);
+}
+
+static void b43_dma_tx_resume_ring(struct b43_dmaring *ring)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&ring->lock, flags);
+	B43_WARN_ON(!ring->tx);
+	ring->ops->tx_resume(ring);
+	spin_unlock_irqrestore(&ring->lock, flags);
+}
+
+void b43_dma_tx_suspend(struct b43_wldev *dev)
+{
+	b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring0);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring1);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring2);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring3);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring4);
+	b43_dma_tx_suspend_ring(dev->dma.tx_ring5);
+}
+
+void b43_dma_tx_resume(struct b43_wldev *dev)
+{
+	b43_dma_tx_resume_ring(dev->dma.tx_ring5);
+	b43_dma_tx_resume_ring(dev->dma.tx_ring4);
+	b43_dma_tx_resume_ring(dev->dma.tx_ring3);
+	b43_dma_tx_resume_ring(dev->dma.tx_ring2);
+	b43_dma_tx_resume_ring(dev->dma.tx_ring1);
+	b43_dma_tx_resume_ring(dev->dma.tx_ring0);
+	b43_power_saving_ctl_bits(dev, 0);
+}

drivers/net/wireless/b43/dma.h

+#ifndef B43_DMA_H_
+#define B43_DMA_H_
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/linkage.h>
+#include <asm/atomic.h>
+
+#include "b43.h"
+
+/* DMA-Interrupt reasons. */
+#define B43_DMAIRQ_FATALMASK	((1 << 10) | (1 << 11) | (1 << 12) \
+					 | (1 << 14) | (1 << 15))
+#define B43_DMAIRQ_NONFATALMASK	(1 << 13)
+#define B43_DMAIRQ_RX_DONE		(1 << 16)
+
+/*** 32-bit DMA Engine. ***/
+
+/* 32-bit DMA controller registers. */
+#define B43_DMA32_TXCTL				0x00
+#define		B43_DMA32_TXENABLE			0x00000001
+#define		B43_DMA32_TXSUSPEND			0x00000002
+#define		B43_DMA32_TXLOOPBACK		0x00000004
+#define		B43_DMA32_TXFLUSH			0x00000010
+#define		B43_DMA32_TXADDREXT_MASK		0x00030000
+#define		B43_DMA32_TXADDREXT_SHIFT		16
+#define B43_DMA32_TXRING				0x04
+#define B43_DMA32_TXINDEX				0x08
+#define B43_DMA32_TXSTATUS				0x0C
+#define		B43_DMA32_TXDPTR			0x00000FFF
+#define		B43_DMA32_TXSTATE			0x0000F000
+#define			B43_DMA32_TXSTAT_DISABLED	0x00000000
+#define			B43_DMA32_TXSTAT_ACTIVE	0x00001000
+#define			B43_DMA32_TXSTAT_IDLEWAIT	0x00002000
+#define			B43_DMA32_TXSTAT_STOPPED	0x00003000
+#define			B43_DMA32_TXSTAT_SUSP	0x00004000
+#define		B43_DMA32_TXERROR			0x000F0000
+#define			B43_DMA32_TXERR_NOERR	0x00000000
+#define			B43_DMA32_TXERR_PROT	0x00010000
+#define			B43_DMA32_TXERR_UNDERRUN	0x00020000
+#define			B43_DMA32_TXERR_BUFREAD	0x00030000
+#define			B43_DMA32_TXERR_DESCREAD	0x00040000
+#define		B43_DMA32_TXACTIVE			0xFFF00000
+#define B43_DMA32_RXCTL				0x10
+#define		B43_DMA32_RXENABLE			0x00000001
+#define		B43_DMA32_RXFROFF_MASK		0x000000FE
+#define		B43_DMA32_RXFROFF_SHIFT		1
+#define		B43_DMA32_RXDIRECTFIFO		0x00000100
+#define		B43_DMA32_RXADDREXT_MASK		0x00030000
+#define		B43_DMA32_RXADDREXT_SHIFT		16
+#define B43_DMA32_RXRING				0x14
+#define B43_DMA32_RXINDEX				0x18
+#define B43_DMA32_RXSTATUS				0x1C
+#define		B43_DMA32_RXDPTR			0x00000FFF
+#define		B43_DMA32_RXSTATE			0x0000F000
+#define			B43_DMA32_RXSTAT_DISABLED	0x00000000
+#define			B43_DMA32_RXSTAT_ACTIVE	0x00001000
+#define			B43_DMA32_RXSTAT_IDLEWAIT	0x00002000
+#define			B43_DMA32_RXSTAT_STOPPED	0x00003000
+#define		B43_DMA32_RXERROR			0x000F0000
+#define			B43_DMA32_RXERR_NOERR	0x00000000
+#define			B43_DMA32_RXERR_PROT	0x00010000
+#define			B43_DMA32_RXERR_OVERFLOW	0x00020000
+#define			B43_DMA32_RXERR_BUFWRITE	0x00030000
+#define			B43_DMA32_RXERR_DESCREAD	0x00040000
+#define		B43_DMA32_RXACTIVE			0xFFF00000
+
+/* 32-bit DMA descriptor. */
+struct b43_dmadesc32 {
+	__le32 control;
+	__le32 address;
+} __attribute__ ((__packed__));
+#define B43_DMA32_DCTL_BYTECNT		0x00001FFF
+#define B43_DMA32_DCTL_ADDREXT_MASK		0x00030000
+#define B43_DMA32_DCTL_ADDREXT_SHIFT	16
+#define B43_DMA32_DCTL_DTABLEEND		0x10000000
+#define B43_DMA32_DCTL_IRQ			0x20000000
+#define B43_DMA32_DCTL_FRAMEEND		0x40000000
+#define B43_DMA32_DCTL_FRAMESTART		0x80000000
+
+/*** 64-bit DMA Engine. ***/
+
+/* 64-bit DMA controller registers. */
+#define B43_DMA64_TXCTL				0x00
+#define		B43_DMA64_TXENABLE			0x00000001
+#define		B43_DMA64_TXSUSPEND			0x00000002
+#define		B43_DMA64_TXLOOPBACK		0x00000004
+#define		B43_DMA64_TXFLUSH			0x00000010
+#define		B43_DMA64_TXADDREXT_MASK		0x00030000
+#define		B43_DMA64_TXADDREXT_SHIFT		16
+#define B43_DMA64_TXINDEX				0x04
+#define B43_DMA64_TXRINGLO				0x08
+#define B43_DMA64_TXRINGHI				0x0C
+#define B43_DMA64_TXSTATUS				0x10
+#define		B43_DMA64_TXSTATDPTR		0x00001FFF
+#define		B43_DMA64_TXSTAT			0xF0000000
+#define			B43_DMA64_TXSTAT_DISABLED	0x00000000
+#define			B43_DMA64_TXSTAT_ACTIVE	0x10000000
+#define			B43_DMA64_TXSTAT_IDLEWAIT	0x20000000
+#define			B43_DMA64_TXSTAT_STOPPED	0x30000000
+#define			B43_DMA64_TXSTAT_SUSP	0x40000000
+#define B43_DMA64_TXERROR				0x14
+#define		B43_DMA64_TXERRDPTR			0x0001FFFF
+#define		B43_DMA64_TXERR			0xF0000000
+#define			B43_DMA64_TXERR_NOERR	0x00000000
+#define			B43_DMA64_TXERR_PROT	0x10000000
+#define			B43_DMA64_TXERR_UNDERRUN	0x20000000
+#define			B43_DMA64_TXERR_TRANSFER	0x30000000
+#define			B43_DMA64_TXERR_DESCREAD	0x40000000
+#define			B43_DMA64_TXERR_CORE	0x50000000
+#define B43_DMA64_RXCTL				0x20
+#define		B43_DMA64_RXENABLE			0x00000001
+#define		B43_DMA64_RXFROFF_MASK		0x000000FE
+#define		B43_DMA64_RXFROFF_SHIFT		1
+#define		B43_DMA64_RXDIRECTFIFO		0x00000100
+#define		B43_DMA64_RXADDREXT_MASK		0x00030000
+#define		B43_DMA64_RXADDREXT_SHIFT		16
+#define B43_DMA64_RXINDEX				0x24
+#define B43_DMA64_RXRINGLO				0x28
+#define B43_DMA64_RXRINGHI				0x2C
+#define B43_DMA64_RXSTATUS				0x30
+#define		B43_DMA64_RXSTATDPTR		0x00001FFF
+#define		B43_DMA64_RXSTAT			0xF0000000
+#define			B43_DMA64_RXSTAT_DISABLED	0x00000000
+#define			B43_DMA64_RXSTAT_ACTIVE	0x10000000
+#define			B43_DMA64_RXSTAT_IDLEWAIT	0x20000000
+#define			B43_DMA64_RXSTAT_STOPPED	0x30000000
+#define			B43_DMA64_RXSTAT_SUSP	0x40000000
+#define B43_DMA64_RXERROR				0x34
+#define		B43_DMA64_RXERRDPTR			0x0001FFFF
+#define		B43_DMA64_RXERR			0xF0000000
+#define			B43_DMA64_RXERR_NOERR	0x00000000
+#define			B43_DMA64_RXERR_PROT	0x10000000
+#define			B43_DMA64_RXERR_UNDERRUN	0x20000000
+#define			B43_DMA64_RXERR_TRANSFER	0x30000000
+#define			B43_DMA64_RXERR_DESCREAD	0x40000000
+#define			B43_DMA64_RXERR_CORE	0x50000000
+
+/* 64-bit DMA descriptor. */
+struct b43_dmadesc64 {
+	__le32 control0;
+	__le32 control1;
+	__le32 address_low;
+	__le32 address_high;
+} __attribute__ ((__packed__));
+#define B43_DMA64_DCTL0_DTABLEEND		0x10000000
+#define B43_DMA64_DCTL0_IRQ			0x20000000
+#define B43_DMA64_DCTL0_FRAMEEND		0x40000000
+#define B43_DMA64_DCTL0_FRAMESTART		0x80000000
+#define B43_DMA64_DCTL1_BYTECNT		0x00001FFF
+#define B43_DMA64_DCTL1_ADDREXT_MASK	0x00030000
+#define B43_DMA64_DCTL1_ADDREXT_SHIFT	16
+
+struct b43_dmadesc_generic {
+	union {
+		struct b43_dmadesc32 dma32;
+		struct b43_dmadesc64 dma64;
+	} __attribute__ ((__packed__));
+} __attribute__ ((__packed__));
+
+/* Misc DMA constants */
+#define B43_DMA_RINGMEMSIZE		PAGE_SIZE
+#define B43_DMA0_RX_FRAMEOFFSET	30
+#define B43_DMA3_RX_FRAMEOFFSET	0
+
+/* DMA engine tuning knobs */
+#define B43_TXRING_SLOTS		128
+#define B43_RXRING_SLOTS		64
+#define B43_DMA0_RX_BUFFERSIZE	(2304 + 100)
+#define B43_DMA3_RX_BUFFERSIZE	16
+
+#ifdef CONFIG_B43_DMA
+
+struct sk_buff;
+struct b43_private;
+struct b43_txstatus;
+
+struct b43_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;
+	struct ieee80211_tx_status txstat;
+};
+
+struct b43_dmaring;
+
+/* Lowlevel DMA operations that differ between 32bit and 64bit DMA. */
+struct b43_dma_ops {
+	struct b43_dmadesc_generic *(*idx2desc) (struct b43_dmaring * ring,
+						 int slot,
+						 struct b43_dmadesc_meta **
+						 meta);
+	void (*fill_descriptor) (struct b43_dmaring * ring,
+				 struct b43_dmadesc_generic * desc,
+				 dma_addr_t dmaaddr, u16 bufsize, int start,
+				 int end, int irq);
+	void (*poke_tx) (struct b43_dmaring * ring, int slot);
+	void (*tx_suspend) (struct b43_dmaring * ring);
+	void (*tx_resume) (struct b43_dmaring * ring);
+	int (*get_current_rxslot) (struct b43_dmaring * ring);
+	void (*set_current_rxslot) (struct b43_dmaring * ring, int slot);
+};
+
+struct b43_dmaring {
+	/* Lowlevel DMA ops. */
+	const struct b43_dma_ops *ops;
+	/* Kernel virtual base address of the ring memory. */
+	void *descbase;
+	/* Meta data about all descriptors. */
+	struct b43_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;
+	/* Total number of packets sent. Statistics only. */
+	unsigned int nr_tx_packets;
+	/* 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;
+	/* Boolean. 64bit DMA if true, 32bit DMA otherwise. */
+	bool dma64;
+	/* Boolean. Is this ring stopped at ieee80211 level? */
+	bool stopped;
+	/* Lock, only used for TX. */
+	spinlock_t lock;
+	struct b43_wldev *dev;
+#ifdef CONFIG_B43_DEBUG
+	/* Maximum number of used slots. */
+	int max_used_slots;
+	/* Last time we injected a ring overflow. */
+	unsigned long last_injected_overflow;
+#endif				/* CONFIG_B43_DEBUG */
+};
+
+static inline u32 b43_dma_read(struct b43_dmaring *ring, u16 offset)
+{
+	return b43_read32(ring->dev, ring->mmio_base + offset);
+}
+
+static inline
+    void b43_dma_write(struct b43_dmaring *ring, u16 offset, u32 value)
+{
+	b43_write32(ring->dev, ring->mmio_base + offset, value);
+}
+
+int b43_dma_init(struct b43_wldev *dev);
+void b43_dma_free(struct b43_wldev *dev);
+
+int b43_dmacontroller_rx_reset(struct b43_wldev *dev,
+			       u16 dmacontroller_mmio_base, int dma64);
+int b43_dmacontroller_tx_reset(struct b43_wldev *dev,
+			       u16 dmacontroller_mmio_base, int dma64);
+
+u16 b43_dmacontroller_base(int dma64bit, int dmacontroller_idx);
+
+void b43_dma_tx_suspend(struct b43_wldev *dev);
+void b43_dma_tx_resume(struct b43_wldev *dev);
+
+void b43_dma_get_tx_stats(struct b43_wldev *dev,
+			  struct ieee80211_tx_queue_stats *stats);
+
+int b43_dma_tx(struct b43_wldev *dev,
+	       struct sk_buff *skb, struct ieee80211_tx_control *ctl);
+void b43_dma_handle_txstatus(struct b43_wldev *dev,
+			     const struct b43_txstatus *status);
+
+void b43_dma_rx(struct b43_dmaring *ring);
+
+#else /* CONFIG_B43_DMA */
+
+static inline int b43_dma_init(struct b43_wldev *dev)
+{
+	return 0;
+}
+static inline void b43_dma_free(struct b43_wldev *dev)
+{
+}
+static inline
+    int b43_dmacontroller_rx_reset(struct b43_wldev *dev,
+				   u16 dmacontroller_mmio_base, int dma64)
+{
+	return 0;
+}
+static inline
+    int b43_dmacontroller_tx_reset(struct b43_wldev *dev,
+				   u16 dmacontroller_mmio_base, int dma64)
+{
+	return 0;
+}
+static inline
+    void b43_dma_get_tx_stats(struct b43_wldev *dev,
+			      struct ieee80211_tx_queue_stats *stats)
+{
+}
+static inline
+    int b43_dma_tx(struct b43_wldev *dev,
+		   struct sk_buff *skb, struct ieee80211_tx_control *ctl)
+{
+	return 0;
+}
+static inline
+    void b43_dma_handle_txstatus(struct b43_wldev *dev,
+				 const struct b43_txstatus *status)
+{
+}
+static inline void b43_dma_rx(struct b43_dmaring *ring)
+{
+}
+static inline void b43_dma_tx_suspend(struct b43_wldev *dev)
+{
+}
+static inline void b43_dma_tx_resume(struct b43_wldev *dev)
+{
+}
+
+#endif /* CONFIG_B43_DMA */
+#endif /* B43_DMA_H_ */

drivers/net/wireless/b43/leds.c

+/*
+
+  Broadcom B43 wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+                     Stefano Brivio <st3@riseup.net>
+                     Michael Buesch <mb@bu3sch.de>
+                     Danny van Dyk <kugelfang@gentoo.org>
+                     Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "leds.h"
+#include "main.h"
+
+static void b43_led_changestate(struct b43_led *led)
+{
+	struct b43_wldev *dev = led->dev;
+	const int index = b43_led_index(led);
+	const u16 mask = (1 << index);
+	u16 ledctl;
+
+	B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
+	B43_WARN_ON(!led->blink_interval);
+	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
+	ledctl = (ledctl & mask) ? (ledctl & ~mask) : (ledctl | mask);
+	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
+}
+
+static void b43_led_blink(unsigned long d)
+{
+	struct b43_led *led = (struct b43_led *)d;
+	struct b43_wldev *dev = led->dev;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->wl->leds_lock, flags);
+	if (led->blink_interval) {
+		b43_led_changestate(led);
+		mod_timer(&led->blink_timer, jiffies + led->blink_interval);
+	}
+	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
+}
+
+static void b43_led_blink_start(struct b43_led *led, unsigned long interval)
+{
+	if (led->blink_interval)
+		return;
+	led->blink_interval = interval;
+	b43_led_changestate(led);
+	led->blink_timer.expires = jiffies + interval;
+	add_timer(&led->blink_timer);
+}
+
+static void b43_led_blink_stop(struct b43_led *led, int sync)
+{
+	struct b43_wldev *dev = led->dev;
+	const int index = b43_led_index(led);
+	u16 ledctl;
+
+	if (!led->blink_interval)
+		return;
+	if (unlikely(sync))
+		del_timer_sync(&led->blink_timer);
+	else
+		del_timer(&led->blink_timer);
+	led->blink_interval = 0;
+
+	/* Make sure the LED is turned off. */
+	B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
+	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
+	if (led->activelow)
+		ledctl |= (1 << index);
+	else
+		ledctl &= ~(1 << index);
+	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
+}
+
+static void b43_led_init_hardcoded(struct b43_wldev *dev,
+				   struct b43_led *led, int led_index)
+{
+	struct ssb_bus *bus = dev->dev->bus;
+
+	/* This function is called, if the behaviour (and activelow)
+	 * information for a LED is missing in the SPROM.
+	 * We hardcode the behaviour values for various devices here.
+	 * Note that the B43_LED_TEST_XXX behaviour values can
+	 * be used to figure out which led is mapped to which index.
+	 */
+
+	switch (led_index) {
+	case 0:
+		led->behaviour = B43_LED_ACTIVITY;
+		led->activelow = 1;
+		if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
+			led->behaviour = B43_LED_RADIO_ALL;
+		break;
+	case 1:
+		led->behaviour = B43_LED_RADIO_B;
+		if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
+			led->behaviour = B43_LED_ASSOC;
+		break;
+	case 2:
+		led->behaviour = B43_LED_RADIO_A;
+		break;
+	case 3:
+		led->behaviour = B43_LED_OFF;
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+}
+
+int b43_leds_init(struct b43_wldev *dev)
+{
+	struct b43_led *led;
+	u8 sprom[4];
+	int i;
+
+	sprom[0] = dev->dev->bus->sprom.r1.gpio0;
+	sprom[1] = dev->dev->bus->sprom.r1.gpio1;
+	sprom[2] = dev->dev->bus->sprom.r1.gpio2;
+	sprom[3] = dev->dev->bus->sprom.r1.gpio3;
+
+	for (i = 0; i < B43_NR_LEDS; i++) {
+		led = &(dev->leds[i]);
+		led->dev = dev;
+		setup_timer(&led->blink_timer,
+			    b43_led_blink, (unsigned long)led);
+
+		if (sprom[i] == 0xFF) {
+			b43_led_init_hardcoded(dev, led, i);
+		} else {
+			led->behaviour = sprom[i] & B43_LED_BEHAVIOUR;
+			led->activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
+		}
+	}
+
+	return 0;
+}
+
+void b43_leds_exit(struct b43_wldev *dev)
+{
+	struct b43_led *led;
+	int i;
+
+	for (i = 0; i < B43_NR_LEDS; i++) {
+		led = &(dev->leds[i]);
+		b43_led_blink_stop(led, 1);
+	}
+	b43_leds_switch_all(dev, 0);
+}
+
+void b43_leds_update(struct b43_wldev *dev, int activity)
+{
+	struct b43_led *led;
+	struct b43_phy *phy = &dev->phy;
+	const int transferring =
+	    (jiffies - dev->stats.last_tx) < B43_LED_XFER_THRES;
+	int i, turn_on;
+	unsigned long interval = 0;
+	u16 ledctl;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->wl->leds_lock, flags);
+	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
+	for (i = 0; i < B43_NR_LEDS; i++) {
+		led = &(dev->leds[i]);
+
+		turn_on = 0;
+		switch (led->behaviour) {
+		case B43_LED_INACTIVE:
+			continue;
+		case B43_LED_OFF:
+			break;
+		case B43_LED_ON:
+			turn_on = 1;
+			break;
+		case B43_LED_ACTIVITY:
+			turn_on = activity;
+			break;
+		case B43_LED_RADIO_ALL:
+			turn_on = phy->radio_on && b43_is_hw_radio_enabled(dev);
+			break;
+		case B43_LED_RADIO_A:
+			turn_on = (phy->radio_on && b43_is_hw_radio_enabled(dev)
+				   && phy->type == B43_PHYTYPE_A);
+			break;
+		case B43_LED_RADIO_B:
+			turn_on = (phy->radio_on && b43_is_hw_radio_enabled(dev)
+				   && (phy->type == B43_PHYTYPE_B
+				       || phy->type == B43_PHYTYPE_G));
+			break;
+		case B43_LED_MODE_BG:
+			if (phy->type == B43_PHYTYPE_G
+			    && b43_is_hw_radio_enabled(dev)
+			    && 1 /*FIXME: using G rates. */ )
+				turn_on = 1;
+			break;
+		case B43_LED_TRANSFER:
+			if (transferring)
+				b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
+			else
+				b43_led_blink_stop(led, 0);
+			continue;
+		case B43_LED_APTRANSFER:
+			if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
+				if (transferring) {
+					interval = B43_LEDBLINK_FAST;
+					turn_on = 1;
+				}
+			} else {
+				turn_on = 1;
+				if (0 /*TODO: not assoc */ )
+					interval = B43_LEDBLINK_SLOW;
+				else if (transferring)
+					interval = B43_LEDBLINK_FAST;
+				else
+					turn_on = 0;
+			}
+			if (turn_on)
+				b43_led_blink_start(led, interval);
+			else
+				b43_led_blink_stop(led, 0);
+			continue;
+		case B43_LED_WEIRD:
+			//TODO
+			break;
+		case B43_LED_ASSOC:
+			if (1 /*dev->softmac->associated */ )
+				turn_on = 1;
+			break;
+#ifdef CONFIG_B43_DEBUG
+		case B43_LED_TEST_BLINKSLOW:
+			b43_led_blink_start(led, B43_LEDBLINK_SLOW);
+			continue;
+		case B43_LED_TEST_BLINKMEDIUM:
+			b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
+			continue;
+		case B43_LED_TEST_BLINKFAST:
+			b43_led_blink_start(led, B43_LEDBLINK_FAST);
+			continue;
+#endif /* CONFIG_B43_DEBUG */
+		default:
+			B43_WARN_ON(1);
+		};
+
+		if (led->activelow)
+			turn_on = !turn_on;
+		if (turn_on)
+			ledctl |= (1 << i);
+		else
+			ledctl &= ~(1 << i);
+	}
+	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
+	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
+}
+
+void b43_leds_switch_all(struct b43_wldev *dev, int on)
+{
+	struct b43_led *led;
+	u16 ledctl;
+	int i;
+	int bit_on;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->wl->leds_lock, flags);
+	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
+	for (i = 0; i < B43_NR_LEDS; i++) {
+		led = &(dev->leds[i]);
+		if (led->behaviour == B43_LED_INACTIVE)
+			continue;
+		if (on)
+			bit_on = led->activelow ? 0 : 1;
+		else
+			bit_on = led->activelow ? 1 : 0;
+		if (bit_on)
+			ledctl |= (1 << i);
+		else
+			ledctl &= ~(1 << i);
+	}
+	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
+	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
+}

drivers/net/wireless/b43/leds.h

+#ifndef B43_LEDS_H_
+#define B43_LEDS_H_
+
+#include <linux/types.h>
+#include <linux/timer.h>
+
+struct b43_led {
+	u8 behaviour:7;
+	u8 activelow:1;
+
+	struct b43_wldev *dev;
+	struct timer_list blink_timer;
+	unsigned long blink_interval;
+};
+#define b43_led_index(led)	((int)((led) - (led)->dev->leds))
+
+/* Delay between state changes when blinking in jiffies */
+#define B43_LEDBLINK_SLOW		(HZ / 1)
+#define B43_LEDBLINK_MEDIUM		(HZ / 4)
+#define B43_LEDBLINK_FAST		(HZ / 8)
+
+#define B43_LED_XFER_THRES		(HZ / 100)
+
+#define B43_LED_BEHAVIOUR		0x7F
+#define B43_LED_ACTIVELOW		0x80
+enum {				/* LED behaviour values */
+	B43_LED_OFF,
+	B43_LED_ON,
+	B43_LED_ACTIVITY,
+	B43_LED_RADIO_ALL,
+	B43_LED_RADIO_A,
+	B43_LED_RADIO_B,
+	B43_LED_MODE_BG,
+	B43_LED_TRANSFER,
+	B43_LED_APTRANSFER,
+	B43_LED_WEIRD,		//FIXME
+	B43_LED_ASSOC,
+	B43_LED_INACTIVE,
+
+	/* Behaviour values for testing.
+	 * With these values it is easier to figure out
+	 * the real behaviour of leds, in case the SPROM
+	 * is missing information.
+	 */
+	B43_LED_TEST_BLINKSLOW,
+	B43_LED_TEST_BLINKMEDIUM,
+	B43_LED_TEST_BLINKFAST,
+};
+
+int b43_leds_init(struct b43_wldev *dev);
+void b43_leds_exit(struct b43_wldev *dev);
+void b43_leds_update(struct b43_wldev *dev, int activity);
+void b43_leds_switch_all(struct b43_wldev *dev, int on);
+
+#endif /* B43_LEDS_H_ */

drivers/net/wireless/b43/lo.c

+/*
+
+  Broadcom B43 wireless driver
+
+  G PHY LO (LocalOscillator) Measuring and Control routines
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+  Copyright (c) 2005, 2006 Stefano Brivio <st3@riseup.net>
+  Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
+  Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "lo.h"
+#include "phy.h"
+#include "main.h"
+
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+
+/* Define to 1 to always calibrate all possible LO control pairs.
+ * This is a workaround until we fix the partial LO calibration optimization. */
+#define B43_CALIB_ALL_LOCTLS	1
+
+
+/* Write the LocalOscillator Control (adjust) value-pair. */
+static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 value;
+	u16 reg;
+
+	if (B43_DEBUG) {
+		if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) {
+			b43dbg(dev->wl, "Invalid LO control pair "
+			       "(I: %d, Q: %d)\n", control->i, control->q);
+			dump_stack();
+			return;
+		}
+	}
+
+	value = (u8) (control->q);
+	value |= ((u8) (control->i)) << 8;
+
+	reg = (phy->type == B43_PHYTYPE_B) ? 0x002F : B43_PHY_LO_CTL;
+	b43_phy_write(dev, reg, value);
+}
+
+static int assert_rfatt_and_bbatt(const struct b43_rfatt *rfatt,
+				  const struct b43_bbatt *bbatt,
+				  struct b43_wldev *dev)
+{
+	int err = 0;
+
+	/* Check the attenuation values against the LO control array sizes. */
+	if (unlikely(rfatt->att >= B43_NR_RF)) {
+		b43err(dev->wl, "rfatt(%u) >= size of LO array\n", rfatt->att);
+		err = -EINVAL;
+	}
+	if (unlikely(bbatt->att >= B43_NR_BB)) {
+		b43err(dev->wl, "bbatt(%u) >= size of LO array\n", bbatt->att);
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+#if !B43_CALIB_ALL_LOCTLS
+static
+struct b43_loctl *b43_get_lo_g_ctl_nopadmix(struct b43_wldev *dev,
+					    const struct b43_rfatt *rfatt,
+					    const struct b43_bbatt *bbatt)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+
+	if (assert_rfatt_and_bbatt(rfatt, bbatt, dev))
+		return &(lo->no_padmix[0][0]);	/* Just prevent a crash */
+	return &(lo->no_padmix[bbatt->att][rfatt->att]);
+}
+#endif /* !B43_CALIB_ALL_LOCTLS */
+
+struct b43_loctl *b43_get_lo_g_ctl(struct b43_wldev *dev,
+				   const struct b43_rfatt *rfatt,
+				   const struct b43_bbatt *bbatt)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+
+	if (assert_rfatt_and_bbatt(rfatt, bbatt, dev))
+		return &(lo->no_padmix[0][0]);	/* Just prevent a crash */
+	if (rfatt->with_padmix)
+		return &(lo->with_padmix[bbatt->att][rfatt->att]);
+	return &(lo->no_padmix[bbatt->att][rfatt->att]);
+}
+
+/* Call a function for every possible LO control value-pair. */
+static void b43_call_for_each_loctl(struct b43_wldev *dev,
+				    void (*func) (struct b43_wldev *,
+						  struct b43_loctl *))
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *ctl = phy->lo_control;
+	int i, j;
+
+	for (i = 0; i < B43_NR_BB; i++) {
+		for (j = 0; j < B43_NR_RF; j++)
+			func(dev, &(ctl->with_padmix[i][j]));
+	}
+	for (i = 0; i < B43_NR_BB; i++) {
+		for (j = 0; j < B43_NR_RF; j++)
+			func(dev, &(ctl->no_padmix[i][j]));
+	}
+}
+
+static u16 lo_b_r15_loop(struct b43_wldev *dev)
+{
+	int i;
+	u16 ret = 0;
+
+	for (i = 0; i < 10; i++) {
+		b43_phy_write(dev, 0x0015, 0xAFA0);
+		udelay(1);
+		b43_phy_write(dev, 0x0015, 0xEFA0);
+		udelay(10);
+		b43_phy_write(dev, 0x0015, 0xFFA0);
+		udelay(40);
+		ret += b43_phy_read(dev, 0x002C);
+	}
+
+	return ret;
+}
+
+void b43_lo_b_measure(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 regstack[12] = { 0 };
+	u16 mls;
+	u16 fval;
+	int i, j;
+
+	regstack[0] = b43_phy_read(dev, 0x0015);
+	regstack[1] = b43_radio_read16(dev, 0x0052) & 0xFFF0;
+
+	if (phy->radio_ver == 0x2053) {
+		regstack[2] = b43_phy_read(dev, 0x000A);
+		regstack[3] = b43_phy_read(dev, 0x002A);
+		regstack[4] = b43_phy_read(dev, 0x0035);
+		regstack[5] = b43_phy_read(dev, 0x0003);
+		regstack[6] = b43_phy_read(dev, 0x0001);
+		regstack[7] = b43_phy_read(dev, 0x0030);
+
+		regstack[8] = b43_radio_read16(dev, 0x0043);
+		regstack[9] = b43_radio_read16(dev, 0x007A);
+		regstack[10] = b43_read16(dev, 0x03EC);
+		regstack[11] = b43_radio_read16(dev, 0x0052) & 0x00F0;
+
+		b43_phy_write(dev, 0x0030, 0x00FF);
+		b43_write16(dev, 0x03EC, 0x3F3F);
+		b43_phy_write(dev, 0x0035, regstack[4] & 0xFF7F);
+		b43_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0);
+	}
+	b43_phy_write(dev, 0x0015, 0xB000);
+	b43_phy_write(dev, 0x002B, 0x0004);
+
+	if (phy->radio_ver == 0x2053) {
+		b43_phy_write(dev, 0x002B, 0x0203);
+		b43_phy_write(dev, 0x002A, 0x08A3);
+	}
+
+	phy->minlowsig[0] = 0xFFFF;
+
+	for (i = 0; i < 4; i++) {
+		b43_radio_write16(dev, 0x0052, regstack[1] | i);
+		lo_b_r15_loop(dev);
+	}
+	for (i = 0; i < 10; i++) {
+		b43_radio_write16(dev, 0x0052, regstack[1] | i);
+		mls = lo_b_r15_loop(dev) / 10;
+		if (mls < phy->minlowsig[0]) {
+			phy->minlowsig[0] = mls;
+			phy->minlowsigpos[0] = i;
+		}
+	}
+	b43_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;
+			b43_phy_write(dev, 0x002F, fval);
+			mls = lo_b_r15_loop(dev) / 10;
+			if (mls < phy->minlowsig[1]) {
+				phy->minlowsig[1] = mls;
+				phy->minlowsigpos[1] = fval;
+			}
+		}
+	}
+	phy->minlowsigpos[1] += 0x0101;
+
+	b43_phy_write(dev, 0x002F, phy->minlowsigpos[1]);
+	if (phy->radio_ver == 0x2053) {
+		b43_phy_write(dev, 0x000A, regstack[2]);
+		b43_phy_write(dev, 0x002A, regstack[3]);
+		b43_phy_write(dev, 0x0035, regstack[4]);
+		b43_phy_write(dev, 0x0003, regstack[5]);
+		b43_phy_write(dev, 0x0001, regstack[6]);
+		b43_phy_write(dev, 0x0030, regstack[7]);
+
+		b43_radio_write16(dev, 0x0043, regstack[8]);
+		b43_radio_write16(dev, 0x007A, regstack[9]);
+
+		b43_radio_write16(dev, 0x0052,
+				  (b43_radio_read16(dev, 0x0052) & 0x000F)
+				  | regstack[11]);
+
+		b43_write16(dev, 0x03EC, regstack[10]);
+	}
+	b43_phy_write(dev, 0x0015, regstack[0]);
+}
+
+static u16 lo_measure_feedthrough(struct b43_wldev *dev,
+				  u16 lna, u16 pga, u16 trsw_rx)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 rfover;
+	u16 feedthrough;
+
+	if (phy->gmode) {
+		lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT;
+		pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT;
+
+		B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA);
+		B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA);
+/*FIXME This assertion fails		B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX |
+				    B43_PHY_RFOVERVAL_BW));
+*/
+		trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW);
+
+		/* Construct the RF Override Value */
+		rfover = B43_PHY_RFOVERVAL_UNK;
+		rfover |= pga;
+		rfover |= lna;
+		rfover |= trsw_rx;
+		if ((dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_EXTLNA) &&
+		    phy->rev > 6)
+			rfover |= B43_PHY_RFOVERVAL_EXTLNA;
+
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= B43_PHY_RFOVERVAL_BW_LBW;
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= B43_PHY_RFOVERVAL_BW_LPF;
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xF300);
+	} else {
+		pga |= B43_PHY_PGACTL_UNKNOWN;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= B43_PHY_PGACTL_LOWBANDW;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= B43_PHY_PGACTL_LPF;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+	}
+	udelay(21);
+	feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
+
+	/* This is a good place to check if we need to relax a bit,
+	 * as this is the main function called regularly
+	 * in the LO calibration. */
+	cond_resched();
+
+	return feedthrough;
+}
+
+/* TXCTL Register and Value Table.
+ * Returns the "TXCTL Register".
+ * "value" is the "TXCTL Value".
+ * "pad_mix_gain" is the PAD Mixer Gain.
+ */
+static u16 lo_txctl_register_table(struct b43_wldev *dev,
+				   u16 * value, u16 * pad_mix_gain)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 reg, v, padmix;
+
+	if (phy->type == B43_PHYTYPE_B) {
+		v = 0x30;
+		if (phy->radio_rev <= 5) {
+			reg = 0x43;
+			padmix = 0;
+		} else {
+			reg = 0x52;
+			padmix = 5;
+		}
+	} else {
+		if (phy->rev >= 2 && phy->radio_rev == 8) {
+			reg = 0x43;
+			v = 0x10;
+			padmix = 2;
+		} else {
+			reg = 0x52;
+			v = 0x30;
+			padmix = 5;
+		}
+	}
+	if (value)
+		*value = v;
+	if (pad_mix_gain)
+		*pad_mix_gain = padmix;
+
+	return reg;
+}
+
+static void lo_measure_txctl_values(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	u16 reg, mask;
+	u16 trsw_rx, pga;
+	u16 radio_pctl_reg;
+
+	static const u8 tx_bias_values[] = {
+		0x09, 0x08, 0x0A, 0x01, 0x00,
+		0x02, 0x05, 0x04, 0x06,
+	};
+	static const u8 tx_magn_values[] = {
+		0x70, 0x40,
+	};
+
+	if (!has_loopback_gain(phy)) {
+		radio_pctl_reg = 6;
+		trsw_rx = 2;
+		pga = 0;
+	} else {
+		int lb_gain;	/* Loopback gain (in dB) */
+
+		trsw_rx = 0;
+		lb_gain = phy->max_lb_gain / 2;
+		if (lb_gain > 10) {
+			radio_pctl_reg = 0;
+			pga = abs(10 - lb_gain) / 6;
+			pga = limit_value(pga, 0, 15);
+		} else {
+			int cmp_val;
+			int tmp;
+
+			pga = 0;
+			cmp_val = 0x24;
+			if ((phy->rev >= 2) &&
+			    (phy->radio_ver == 0x2050) && (phy->radio_rev == 8))
+				cmp_val = 0x3C;
+			tmp = lb_gain;
+			if ((10 - lb_gain) < cmp_val)
+				tmp = (10 - lb_gain);
+			if (tmp < 0)
+				tmp += 6;
+			else
+				tmp += 3;
+			cmp_val /= 4;
+			tmp /= 4;
+			if (tmp >= cmp_val)
+				radio_pctl_reg = cmp_val;
+			else
+				radio_pctl_reg = tmp;
+		}
+	}
+	b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
+				      & 0xFFF0) | radio_pctl_reg);
+	b43_phy_set_baseband_attenuation(dev, 2);
+
+	reg = lo_txctl_register_table(dev, &mask, NULL);
+	mask = ~mask;
+	b43_radio_write16(dev, reg, b43_radio_read16(dev, reg)
+			  & mask);
+
+	if (has_tx_magnification(phy)) {
+		int i, j;
+		int feedthrough;
+		int min_feedth = 0xFFFF;
+		u8 tx_magn, tx_bias;
+
+		for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) {
+			tx_magn = tx_magn_values[i];
+			b43_radio_write16(dev, 0x52,
+					  (b43_radio_read16(dev, 0x52)
+					   & 0xFF0F) | tx_magn);
+			for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
+				tx_bias = tx_bias_values[j];
+				b43_radio_write16(dev, 0x52,
+						  (b43_radio_read16(dev, 0x52)
+						   & 0xFFF0) | tx_bias);
+				feedthrough =
+				    lo_measure_feedthrough(dev, 0, pga,
+							   trsw_rx);
+				if (feedthrough < min_feedth) {
+					lo->tx_bias = tx_bias;
+					lo->tx_magn = tx_magn;
+					min_feedth = feedthrough;
+				}
+				if (lo->tx_bias == 0)
+					break;
+			}
+			b43_radio_write16(dev, 0x52,
+					  (b43_radio_read16(dev, 0x52)
+					   & 0xFF00) | lo->tx_bias | lo->
+					  tx_magn);
+		}
+	} else {
+		lo->tx_magn = 0;
+		lo->tx_bias = 0;
+		b43_radio_write16(dev, 0x52, b43_radio_read16(dev, 0x52)
+				  & 0xFFF0);	/* TX bias == 0 */
+	}
+}
+
+static void lo_read_power_vector(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	u16 i;
+	u64 tmp;
+	u64 power_vector = 0;
+	int rf_offset, bb_offset;
+	struct b43_loctl *loctl;
+
+	for (i = 0; i < 8; i += 2) {
+		tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i);
+		/* Clear the top byte. We get holes in the bitmap... */
+		tmp &= 0xFF;
+		power_vector |= (tmp << (i * 8));
+		/* Clear the vector on the device. */
+		b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0);
+	}
+
+	if (power_vector)
+		lo->power_vector = power_vector;
+	power_vector = lo->power_vector;
+
+	for (i = 0; i < 64; i++) {
+		if (power_vector & ((u64) 1ULL << i)) {
+			/* Now figure out which b43_loctl corresponds
+			 * to this bit.
+			 */
+			rf_offset = i / lo->rfatt_list.len;
+			bb_offset = i % lo->rfatt_list.len;	//FIXME?
+			loctl =
+			    b43_get_lo_g_ctl(dev,
+					     &lo->rfatt_list.list[rf_offset],
+					     &lo->bbatt_list.list[bb_offset]);
+			/* And mark it as "used", as the device told us
+			 * through the bitmap it is using it.
+			 */
+			loctl->used = 1;
+		}
+	}
+}
+
+/* 802.11/LO/GPHY/MeasuringGains */
+static void lo_measure_gain_values(struct b43_wldev *dev,
+				   s16 max_rx_gain, int use_trsw_rx)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 tmp;
+
+	if (max_rx_gain < 0)
+		max_rx_gain = 0;
+
+	if (has_loopback_gain(phy)) {
+		int trsw_rx = 0;
+		int trsw_rx_gain;
+
+		if (use_trsw_rx) {
+			trsw_rx_gain = phy->trsw_rx_gain / 2;
+			if (max_rx_gain >= trsw_rx_gain) {
+				trsw_rx_gain = max_rx_gain - trsw_rx_gain;
+				trsw_rx = 0x20;
+			}
+		} else
+			trsw_rx_gain = max_rx_gain;
+		if (trsw_rx_gain < 9) {
+			phy->lna_lod_gain = 0;
+		} else {
+			phy->lna_lod_gain = 1;
+			trsw_rx_gain -= 8;
+		}
+		trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D);
+		phy->pga_gain = trsw_rx_gain / 3;
+		if (phy->pga_gain >= 5) {
+			phy->pga_gain -= 5;
+			phy->lna_gain = 2;
+		} else
+			phy->lna_gain = 0;
+	} else {
+		phy->lna_gain = 0;
+		phy->trsw_rx_gain = 0x20;
+		if (max_rx_gain >= 0x14) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 2;
+		} else if (max_rx_gain >= 0x12) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 1;
+		} else if (max_rx_gain >= 0xF) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 0;
+		} else {
+			phy->lna_lod_gain = 0;
+			phy->pga_gain = 0;
+		}
+	}
+
+	tmp = b43_radio_read16(dev, 0x7A);
+	if (phy->lna_lod_gain == 0)
+		tmp &= ~0x0008;
+	else
+		tmp |= 0x0008;
+	b43_radio_write16(dev, 0x7A, tmp);
+}
+
+struct lo_g_saved_values {
+	u8 old_channel;
+
+	/* Core registers */
+	u16 reg_3F4;
+	u16 reg_3E2;
+
+	/* PHY registers */
+	u16 phy_lo_mask;
+	u16 phy_extg_01;
+	u16 phy_dacctl_hwpctl;
+	u16 phy_dacctl;
+	u16 phy_base_14;
+	u16 phy_hpwr_tssictl;
+	u16 phy_analogover;
+	u16 phy_analogoverval;
+	u16 phy_rfover;
+	u16 phy_rfoverval;
+	u16 phy_classctl;
+	u16 phy_base_3E;
+	u16 phy_crs0;
+	u16 phy_pgactl;
+	u16 phy_base_2A;
+	u16 phy_syncctl;
+	u16 phy_base_30;
+	u16 phy_base_06;
+
+	/* Radio registers */
+	u16 radio_43;
+	u16 radio_7A;
+	u16 radio_52;
+};
+
+static void lo_measure_setup(struct b43_wldev *dev,
+			     struct lo_g_saved_values *sav)
+{
+	struct ssb_sprom *sprom = &dev->dev->bus->sprom;
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	u16 tmp;
+
+	if (b43_has_hardware_pctl(phy)) {
+		sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
+		sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01));
+		sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL);
+		sav->phy_base_14 = b43_phy_read(dev, B43_PHY_BASE(0x14));
+		sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL);
+
+		b43_phy_write(dev, B43_PHY_HPWR_TSSICTL,
+			      b43_phy_read(dev, B43_PHY_HPWR_TSSICTL)
+			      | 0x100);
+		b43_phy_write(dev, B43_PHY_EXTG(0x01),
+			      b43_phy_read(dev, B43_PHY_EXTG(0x01))
+			      | 0x40);
+		b43_phy_write(dev, B43_PHY_DACCTL,
+			      b43_phy_read(dev, B43_PHY_DACCTL)
+			      | 0x40);
+		b43_phy_write(dev, B43_PHY_BASE(0x14),
+			      b43_phy_read(dev, B43_PHY_BASE(0x14))
+			      | 0x200);
+	}
+	if (phy->type == B43_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 && phy->radio_rev < 6) {
+		b43_phy_write(dev, B43_PHY_BASE(0x16), 0x410);
+		b43_phy_write(dev, B43_PHY_BASE(0x17), 0x820);
+	}
+	if (!lo->rebuild && b43_has_hardware_pctl(phy))
+		lo_read_power_vector(dev);
+	if (phy->rev >= 2) {
+		sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
+		sav->phy_analogoverval =
+		    b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
+		sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
+		sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
+		sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);
+		sav->phy_base_3E = b43_phy_read(dev, B43_PHY_BASE(0x3E));
+		sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
+
+		b43_phy_write(dev, B43_PHY_CLASSCTL,
+			      b43_phy_read(dev, B43_PHY_CLASSCTL)
+			      & 0xFFFC);
+		b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0)
+			      & 0x7FFF);
+		b43_phy_write(dev, B43_PHY_ANALOGOVER,
+			      b43_phy_read(dev, B43_PHY_ANALOGOVER)
+			      | 0x0003);
+		b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
+			      b43_phy_read(dev, B43_PHY_ANALOGOVERVAL)
+			      & 0xFFFC);
+		if (phy->type == B43_PHYTYPE_G) {
+			if ((phy->rev >= 7) &&
+			    (sprom->r1.boardflags_lo & B43_BFL_EXTLNA)) {
+				b43_phy_write(dev, B43_PHY_RFOVER, 0x933);
+			} else {
+				b43_phy_write(dev, B43_PHY_RFOVER, 0x133);
+			}
+		} else {
+			b43_phy_write(dev, B43_PHY_RFOVER, 0);
+		}
+		b43_phy_write(dev, B43_PHY_BASE(0x3E), 0);
+	}
+	sav->reg_3F4 = b43_read16(dev, 0x3F4);
+	sav->reg_3E2 = b43_read16(dev, 0x3E2);
+	sav->radio_43 = b43_radio_read16(dev, 0x43);
+	sav->radio_7A = b43_radio_read16(dev, 0x7A);
+	sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
+	sav->phy_base_2A = b43_phy_read(dev, B43_PHY_BASE(0x2A));
+	sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
+	sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL);
+
+	if (!has_tx_magnification(phy)) {
+		sav->radio_52 = b43_radio_read16(dev, 0x52);
+		sav->radio_52 &= 0x00F0;
+	}
+	if (phy->type == B43_PHYTYPE_B) {
+		sav->phy_base_30 = b43_phy_read(dev, B43_PHY_BASE(0x30));
+		sav->phy_base_06 = b43_phy_read(dev, B43_PHY_BASE(0x06));
+		b43_phy_write(dev, B43_PHY_BASE(0x30), 0x00FF);
+		b43_phy_write(dev, B43_PHY_BASE(0x06), 0x3F3F);
+	} else {
+		b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2)
+			    | 0x8000);
+	}
+	b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4)
+		    & 0xF000);
+
+	tmp =
+	    (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_BASE(0x2E);
+	b43_phy_write(dev, tmp, 0x007F);
+
+	tmp = sav->phy_syncctl;
+	b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F);
+	tmp = sav->radio_7A;
+	b43_radio_write16(dev, 0x007A, tmp & 0xFFF0);
+
+	b43_phy_write(dev, B43_PHY_BASE(0x2A), 0x8A3);
+	if (phy->type == B43_PHYTYPE_G ||
+	    (phy->type == B43_PHYTYPE_B &&
+	     phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) {
+		b43_phy_write(dev, B43_PHY_BASE(0x2B), 0x1003);
+	} else
+		b43_phy_write(dev, B43_PHY_BASE(0x2B), 0x0802);
+	if (phy->rev >= 2)
+		b43_dummy_transmission(dev);
+	b43_radio_selectchannel(dev, 6, 0);
+	b43_radio_read16(dev, 0x51);	/* dummy read */
+	if (phy->type == B43_PHYTYPE_G)
+		b43_phy_write(dev, B43_PHY_BASE(0x2F), 0);
+	if (lo->rebuild)
+		lo_measure_txctl_values(dev);
+	if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) {
+		b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078);
+	} else {
+		if (phy->type == B43_PHYTYPE_B)
+			b43_phy_write(dev, B43_PHY_BASE(0x2E), 0x8078);
+		else
+			b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
+	}
+}
+
+static void lo_measure_restore(struct b43_wldev *dev,
+			       struct lo_g_saved_values *sav)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	u16 tmp;
+
+	if (phy->rev >= 2) {
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
+		tmp = (phy->pga_gain << 8);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0);
+		udelay(5);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2);
+		udelay(2);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3);
+	} else {
+		tmp = (phy->pga_gain | 0xEFA0);
+		b43_phy_write(dev, B43_PHY_PGACTL, tmp);
+	}
+	if (b43_has_hardware_pctl(phy)) {
+		b43_gphy_dc_lt_init(dev);
+	} else {
+		if (lo->rebuild)
+			b43_lo_g_adjust_to(dev, 3, 2, 0);
+		else
+			b43_lo_g_adjust(dev);
+	}
+	if (phy->type == B43_PHYTYPE_G) {
+		if (phy->rev >= 3)
+			b43_phy_write(dev, B43_PHY_BASE(0x2E), 0xC078);
+		else
+			b43_phy_write(dev, B43_PHY_BASE(0x2E), 0x8078);
+		if (phy->rev >= 2)
+			b43_phy_write(dev, B43_PHY_BASE(0x2F), 0x0202);
+		else
+			b43_phy_write(dev, B43_PHY_BASE(0x2F), 0x0101);
+	}
+	b43_write16(dev, 0x3F4, sav->reg_3F4);
+	b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl);
+	b43_phy_write(dev, B43_PHY_BASE(0x2A), sav->phy_base_2A);
+	b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl);
+	b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl);
+	b43_radio_write16(dev, 0x43, sav->radio_43);
+	b43_radio_write16(dev, 0x7A, sav->radio_7A);
+	if (!has_tx_magnification(phy)) {
+		tmp = sav->radio_52;
+		b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52)
+					      & 0xFF0F) | tmp);
+	}
+	b43_write16(dev, 0x3E2, sav->reg_3E2);
+	if (phy->type == B43_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 && phy->radio_rev <= 5) {
+		b43_phy_write(dev, B43_PHY_BASE(0x30), sav->phy_base_30);
+		b43_phy_write(dev, B43_PHY_BASE(0x06), sav->phy_base_06);
+	}
+	if (phy->rev >= 2) {
+		b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover);
+		b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
+			      sav->phy_analogoverval);
+		b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl);
+		b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval);
+		b43_phy_write(dev, B43_PHY_BASE(0x3E), sav->phy_base_3E);
+		b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0);
+	}
+	if (b43_has_hardware_pctl(phy)) {
+		tmp = (sav->phy_lo_mask & 0xBFFF);
+		b43_phy_write(dev, B43_PHY_LO_MASK, tmp);
+		b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01);
+		b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl);
+		b43_phy_write(dev, B43_PHY_BASE(0x14), sav->phy_base_14);
+		b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
+	}
+	b43_radio_selectchannel(dev, sav->old_channel, 1);
+}
+
+struct b43_lo_g_statemachine {
+	int current_state;
+	int nr_measured;
+	int state_val_multiplier;
+	u16 lowest_feedth;
+	struct b43_loctl min_loctl;
+};
+
+/* Loop over each possible value in this state. */
+static int lo_probe_possible_loctls(struct b43_wldev *dev,
+				    struct b43_loctl *probe_loctl,
+				    struct b43_lo_g_statemachine *d)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	struct b43_loctl test_loctl;
+	struct b43_loctl orig_loctl;
+	struct b43_loctl prev_loctl = {
+		.i = -100,
+		.q = -100,
+	};
+	int i;
+	int begin, end;
+	int found_lower = 0;
+	u16 feedth;
+
+	static const struct b43_loctl modifiers[] = {
+		{.i = 1,.q = 1,},
+		{.i = 1,.q = 0,},
+		{.i = 1,.q = -1,},
+		{.i = 0,.q = -1,},
+		{.i = -1,.q = -1,},
+		{.i = -1,.q = 0,},
+		{.i = -1,.q = 1,},
+		{.i = 0,.q = 1,},
+	};
+
+	if (d->current_state == 0) {
+		begin = 1;
+		end = 8;
+	} else if (d->current_state % 2 == 0) {
+		begin = d->current_state - 1;
+		end = d->current_state + 1;
+	} else {
+		begin = d->current_state - 2;
+		end = d->current_state + 2;
+	}
+	if (begin < 1)
+		begin += 8;
+	if (end > 8)
+		end -= 8;
+
+	memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl));
+	i = begin;
+	d->current_state = i;
+	while (1) {
+		B43_WARN_ON(!(i >= 1 && i <= 8));
+		memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl));
+		test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier;
+		test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier;
+		if ((test_loctl.i != prev_loctl.i ||
+		     test_loctl.q != prev_loctl.q) &&
+		    (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) {
+			b43_lo_write(dev, &test_loctl);
+			feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+							phy->pga_gain,
+							phy->trsw_rx_gain);
+			if (feedth < d->lowest_feedth) {
+				memcpy(probe_loctl, &test_loctl,
+				       sizeof(struct b43_loctl));
+				found_lower = 1;
+				d->lowest_feedth = feedth;
+				if ((d->nr_measured < 2) &&
+				    (!has_loopback_gain(phy) || lo->rebuild))
+					break;
+			}
+		}
+		memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl));
+		if (i == end)
+			break;
+		if (i == 8)
+			i = 1;
+		else
+			i++;
+		d->current_state = i;
+	}
+
+	return found_lower;
+}
+
+static void lo_probe_loctls_statemachine(struct b43_wldev *dev,
+					 struct b43_loctl *loctl,
+					 int *max_rx_gain)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	struct b43_lo_g_statemachine d;
+	u16 feedth;
+	int found_lower;
+	struct b43_loctl probe_loctl;
+	int max_repeat = 1, repeat_cnt = 0;
+
+	d.nr_measured = 0;
+	d.state_val_multiplier = 1;
+	if (has_loopback_gain(phy) && !lo->rebuild)
+		d.state_val_multiplier = 3;
+
+	memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl));
+	if (has_loopback_gain(phy) && lo->rebuild)
+		max_repeat = 4;
+	do {
+		b43_lo_write(dev, &d.min_loctl);
+		feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+						phy->pga_gain,
+						phy->trsw_rx_gain);
+		if (!lo->rebuild && feedth < 0x258) {
+			if (feedth >= 0x12C)
+				*max_rx_gain += 6;
+			else
+				*max_rx_gain += 3;
+			feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+							phy->pga_gain,
+							phy->trsw_rx_gain);
+		}
+		d.lowest_feedth = feedth;
+
+		d.current_state = 0;
+		do {
+			B43_WARN_ON(!
+				    (d.current_state >= 0
+				     && d.current_state <= 8));
+			memcpy(&probe_loctl, &d.min_loctl,
+			       sizeof(struct b43_loctl));
+			found_lower =
+			    lo_probe_possible_loctls(dev, &probe_loctl, &d);
+			if (!found_lower)
+				break;
+			if ((probe_loctl.i == d.min_loctl.i) &&
+			    (probe_loctl.q == d.min_loctl.q))
+				break;
+			memcpy(&d.min_loctl, &probe_loctl,
+			       sizeof(struct b43_loctl));
+			d.nr_measured++;
+		} while (d.nr_measured < 24);
+		memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl));
+
+		if (has_loopback_gain(phy)) {
+			if (d.lowest_feedth > 0x1194)
+				*max_rx_gain -= 6;
+			else if (d.lowest_feedth < 0x5DC)
+				*max_rx_gain += 3;
+			if (repeat_cnt == 0) {
+				if (d.lowest_feedth <= 0x5DC) {
+					d.state_val_multiplier = 1;
+					repeat_cnt++;
+				} else
+					d.state_val_multiplier = 2;
+			} else if (repeat_cnt == 2)
+				d.state_val_multiplier = 1;
+		}
+		lo_measure_gain_values(dev, *max_rx_gain,
+				       has_loopback_gain(phy));
+	} while (++repeat_cnt < max_repeat);
+}
+
+#if B43_CALIB_ALL_LOCTLS
+static const struct b43_rfatt b43_full_rfatt_list_items[] = {
+	{ .att = 0, .with_padmix = 0, },
+	{ .att = 1, .with_padmix = 0, },
+	{ .att = 2, .with_padmix = 0, },
+	{ .att = 3, .with_padmix = 0, },
+	{ .att = 4, .with_padmix = 0, },
+	{ .att = 5, .with_padmix = 0, },
+	{ .att = 6, .with_padmix = 0, },
+	{ .att = 7, .with_padmix = 0, },
+	{ .att = 8, .with_padmix = 0, },
+	{ .att = 9, .with_padmix = 0, },
+	{ .att = 10, .with_padmix = 0, },
+	{ .att = 11, .with_padmix = 0, },
+	{ .att = 12, .with_padmix = 0, },
+	{ .att = 13, .with_padmix = 0, },
+	{ .att = 14, .with_padmix = 0, },
+	{ .att = 15, .with_padmix = 0, },
+	{ .att = 0, .with_padmix = 1, },
+	{ .att = 1, .with_padmix = 1, },
+	{ .att = 2, .with_padmix = 1, },
+	{ .att = 3, .with_padmix = 1, },
+	{ .att = 4, .with_padmix = 1, },
+	{ .att = 5, .with_padmix = 1, },
+	{ .att = 6, .with_padmix = 1, },
+	{ .att = 7, .with_padmix = 1, },
+	{ .att = 8, .with_padmix = 1, },
+	{ .att = 9, .with_padmix = 1, },
+	{ .att = 10, .with_padmix = 1, },
+	{ .att = 11, .with_padmix = 1, },
+	{ .att = 12, .with_padmix = 1, },
+	{ .att = 13, .with_padmix = 1, },
+	{ .att = 14, .with_padmix = 1, },
+	{ .att = 15, .with_padmix = 1, },
+};
+static const struct b43_rfatt_list b43_full_rfatt_list = {
+	.list		= b43_full_rfatt_list_items,
+	.len		= ARRAY_SIZE(b43_full_rfatt_list_items),
+};
+
+static const struct b43_bbatt b43_full_bbatt_list_items[] = {
+	{ .att = 0, },
+	{ .att = 1, },
+	{ .att = 2, },
+	{ .att = 3, },
+	{ .att = 4, },
+	{ .att = 5, },
+	{ .att = 6, },
+	{ .att = 7, },
+	{ .att = 8, },
+	{ .att = 9, },
+	{ .att = 10, },
+	{ .att = 11, },
+};
+static const struct b43_bbatt_list b43_full_bbatt_list = {
+	.list		= b43_full_bbatt_list_items,
+	.len		= ARRAY_SIZE(b43_full_bbatt_list_items),
+};
+#endif /* B43_CALIB_ALL_LOCTLS */
+
+static void lo_measure(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+	struct b43_loctl loctl = {
+		.i = 0,
+		.q = 0,
+	};
+	struct b43_loctl *ploctl;
+	int max_rx_gain;
+	int rfidx, bbidx;
+	const struct b43_bbatt_list *bbatt_list;
+	const struct b43_rfatt_list *rfatt_list;
+
+	/* Values from the "TXCTL Register and Value Table" */
+	u16 txctl_reg;
+	u16 txctl_value;
+	u16 pad_mix_gain;
+
+	bbatt_list = &lo->bbatt_list;
+	rfatt_list = &lo->rfatt_list;
+#if B43_CALIB_ALL_LOCTLS
+	bbatt_list = &b43_full_bbatt_list;
+	rfatt_list = &b43_full_rfatt_list;
+#endif
+
+	txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
+
+	for (rfidx = 0; rfidx < rfatt_list->len; rfidx++) {
+
+		b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
+					      & 0xFFF0) |
+				  rfatt_list->list[rfidx].att);
+		b43_radio_write16(dev, txctl_reg,
+				  (b43_radio_read16(dev, txctl_reg)
+				   & ~txctl_value)
+				  | (rfatt_list->list[rfidx].with_padmix ?
+				     txctl_value : 0));
+
+		for (bbidx = 0; bbidx < bbatt_list->len; bbidx++) {
+			if (lo->rebuild) {
+#if B43_CALIB_ALL_LOCTLS
+				ploctl = b43_get_lo_g_ctl(dev,
+							  &rfatt_list->list[rfidx],
+							  &bbatt_list->list[bbidx]);
+#else
+				ploctl = b43_get_lo_g_ctl_nopadmix(dev,
+								   &rfatt_list->
+								   list[rfidx],
+								   &bbatt_list->
+								   list[bbidx]);
+#endif
+			} else {
+				ploctl = b43_get_lo_g_ctl(dev,
+							  &rfatt_list->list[rfidx],
+							  &bbatt_list->list[bbidx]);
+				if (!ploctl->used)
+					continue;
+			}
+			memcpy(&loctl, ploctl, sizeof(loctl));
+			loctl.i = 0;
+			loctl.q = 0;
+
+			max_rx_gain = rfatt_list->list[rfidx].att * 2;
+			max_rx_gain += bbatt_list->list[bbidx].att / 2;
+			if (rfatt_list->list[rfidx].with_padmix)
+				max_rx_gain -= pad_mix_gain;
+			if (has_loopback_gain(phy))
+				max_rx_gain += phy->max_lb_gain;
+			lo_measure_gain_values(dev, max_rx_gain,
+					       has_loopback_gain(phy));
+
+			b43_phy_set_baseband_attenuation(dev,
+							 bbatt_list->list[bbidx].att);
+			lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
+			if (phy->type == B43_PHYTYPE_B) {
+				loctl.i++;
+				loctl.q++;
+			}
+			b43_loctl_set_calibrated(&loctl, 1);
+			memcpy(ploctl, &loctl, sizeof(loctl));
+		}
+	}
+}
+
+#if B43_DEBUG
+static void do_validate_loctl(struct b43_wldev *dev, struct b43_loctl *control)
+{
+	const int is_initializing = (b43_status(dev) == B43_STAT_UNINIT);
+	int i = control->i;
+	int q = control->q;
+
+	if (b43_loctl_is_calibrated(control)) {
+		if ((abs(i) > 16) || (abs(q) > 16))
+			goto error;
+	} else {
+		if (control->used)
+			goto error;
+		if (dev->phy.lo_control->rebuild) {
+			control->i = 0;
+			control->q = 0;
+			if ((i != B43_LOCTL_POISON) ||
+			    (q != B43_LOCTL_POISON))
+				goto error;
+		}
+	}
+	if (is_initializing && control->used)
+		goto error;
+
+	return;
+error:
+	b43err(dev->wl, "LO control pair validation failed "
+	       "(I: %d, Q: %d, used %u, calib: %u, initing: %d)\n",
+	       i, q, control->used,
+	       b43_loctl_is_calibrated(control),
+	       is_initializing);
+}
+
+static void validate_all_loctls(struct b43_wldev *dev)
+{
+	b43_call_for_each_loctl(dev, do_validate_loctl);
+}
+
+static void do_reset_calib(struct b43_wldev *dev, struct b43_loctl *control)
+{
+	if (dev->phy.lo_control->rebuild ||
+	    control->used) {
+		b43_loctl_set_calibrated(control, 0);
+		control->i = B43_LOCTL_POISON;
+		control->q = B43_LOCTL_POISON;
+	}
+}
+
+static void reset_all_loctl_calibration_states(struct b43_wldev *dev)
+{
+	b43_call_for_each_loctl(dev, do_reset_calib);
+}
+
+#else /* B43_DEBUG */
+static inline void validate_all_loctls(struct b43_wldev *dev) { }
+static inline void reset_all_loctl_calibration_states(struct b43_wldev *dev) { }
+#endif /* B43_DEBUG */
+
+void b43_lo_g_measure(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct lo_g_saved_values uninitialized_var(sav);
+
+	B43_WARN_ON((phy->type != B43_PHYTYPE_B) &&
+		    (phy->type != B43_PHYTYPE_G));
+
+	sav.old_channel = phy->channel;
+	lo_measure_setup(dev, &sav);
+	reset_all_loctl_calibration_states(dev);
+	lo_measure(dev);
+	lo_measure_restore(dev, &sav);
+
+	validate_all_loctls(dev);
+
+	phy->lo_control->lo_measured = 1;
+	phy->lo_control->rebuild = 0;
+}
+
+#if B43_DEBUG
+static void validate_loctl_calibration(struct b43_wldev *dev,
+				       struct b43_loctl *loctl,
+				       struct b43_rfatt *rfatt,
+				       struct b43_bbatt *bbatt)
+{
+	if (b43_loctl_is_calibrated(loctl))
+		return;
+	if (!dev->phy.lo_control->lo_measured) {
+		/* On init we set the attenuation values before we
+		 * calibrated the LO. I guess that's OK. */
+		return;
+	}
+	b43err(dev->wl, "Adjusting Local Oscillator to an uncalibrated "
+	       "control pair: rfatt=%u,%spadmix bbatt=%u\n",
+	       rfatt->att,
+	       (rfatt->with_padmix) ? "" : "no-",
+	       bbatt->att);
+}
+#else
+static inline void validate_loctl_calibration(struct b43_wldev *dev,
+					      struct b43_loctl *loctl,
+					      struct b43_rfatt *rfatt,
+					      struct b43_bbatt *bbatt)
+{
+}
+#endif
+
+static inline void fixup_rfatt_for_txcontrol(struct b43_rfatt *rf,
+					     u8 tx_control)
+{
+	if (tx_control & B43_TXCTL_TXMIX) {
+		if (rf->att < 5)
+			rf->att = 4;
+	}
+}
+
+void b43_lo_g_adjust(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_rfatt rf;
+	struct b43_loctl *loctl;
+
+	memcpy(&rf, &phy->rfatt, sizeof(rf));
+	fixup_rfatt_for_txcontrol(&rf, phy->tx_control);
+
+	loctl = b43_get_lo_g_ctl(dev, &rf, &phy->bbatt);
+	validate_loctl_calibration(dev, loctl, &rf, &phy->bbatt);
+	b43_lo_write(dev, loctl);
+}
+
+void b43_lo_g_adjust_to(struct b43_wldev *dev,
+			u16 rfatt, u16 bbatt, u16 tx_control)
+{
+	struct b43_rfatt rf;
+	struct b43_bbatt bb;
+	struct b43_loctl *loctl;
+
+	memset(&rf, 0, sizeof(rf));
+	memset(&bb, 0, sizeof(bb));
+	rf.att = rfatt;
+	bb.att = bbatt;
+	fixup_rfatt_for_txcontrol(&rf, tx_control);
+	loctl = b43_get_lo_g_ctl(dev, &rf, &bb);
+	validate_loctl_calibration(dev, loctl, &rf, &bb);
+	b43_lo_write(dev, loctl);
+}
+
+static void do_mark_unused(struct b43_wldev *dev, struct b43_loctl *control)
+{
+	control->used = 0;
+}
+
+void b43_lo_g_ctl_mark_all_unused(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_txpower_lo_control *lo = phy->lo_control;
+
+	b43_call_for_each_loctl(dev, do_mark_unused);
+	lo->rebuild = 1;
+}
+
+void b43_lo_g_ctl_mark_cur_used(struct b43_wldev *dev)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_rfatt rf;
+
+	memcpy(&rf, &phy->rfatt, sizeof(rf));
+	fixup_rfatt_for_txcontrol(&rf, phy->tx_control);
+
+	b43_get_lo_g_ctl(dev, &rf, &phy->bbatt)->used = 1;
+}

drivers/net/wireless/b43/lo.h

+#ifndef B43_LO_H_
+#define B43_LO_H_
+
+#include "phy.h"
+
+struct b43_wldev;
+
+/* Local Oscillator control value-pair. */
+struct b43_loctl {
+	/* Control values. */
+	s8 i;
+	s8 q;
+	/* "Used by hardware" flag. */
+	bool used;
+#ifdef CONFIG_B43_DEBUG
+	/* Is this lo-control-array entry calibrated? */
+	bool calibrated;
+#endif
+};
+
+/* Debugging: Poison value for i and q values. */
+#define B43_LOCTL_POISON	111
+
+/* loctl->calibrated debugging mechanism */
+#ifdef CONFIG_B43_DEBUG
+static inline void b43_loctl_set_calibrated(struct b43_loctl *loctl,
+					    bool calibrated)
+{
+	loctl->calibrated = calibrated;
+}
+static inline bool b43_loctl_is_calibrated(struct b43_loctl *loctl)
+{
+	return loctl->calibrated;
+}
+#else
+static inline void b43_loctl_set_calibrated(struct b43_loctl *loctl,
+					    bool calibrated)
+{
+}
+static inline bool b43_loctl_is_calibrated(struct b43_loctl *loctl)
+{
+	return 1;
+}
+#endif
+
+/* TX Power LO Control Array.
+ * Value-pairs to adjust the LocalOscillator are stored
+ * in this structure.
+ * There are two different set of values. One for "Flag is Set"
+ * and one for "Flag is Unset".
+ * By "Flag" the flag in struct b43_rfatt is meant.
+ * The Value arrays are two-dimensional. The first index
+ * is the baseband attenuation and the second index
+ * is the radio attenuation.
+ * Use b43_get_lo_g_ctl() to retrieve a value from the lists.
+ */
+struct b43_txpower_lo_control {
+#define B43_NR_BB	12
+#define B43_NR_RF	16
+	/* LO Control values, with PAD Mixer */
+	struct b43_loctl with_padmix[B43_NR_BB][B43_NR_RF];
+	/* LO Control values, without PAD Mixer */
+	struct b43_loctl no_padmix[B43_NR_BB][B43_NR_RF];
+
+	/* Flag to indicate a complete rebuild of the two tables above
+	 * to the LO measuring code. */
+	bool rebuild;
+
+	/* Lists of valid RF and BB attenuation values for this device. */
+	struct b43_rfatt_list rfatt_list;
+	struct b43_bbatt_list bbatt_list;
+
+	/* Current TX Bias value */
+	u8 tx_bias;
+	/* Current TX Magnification Value (if used by the device) */
+	u8 tx_magn;
+
+	/* GPHY LO is measured. */
+	bool lo_measured;
+
+	/* Saved device PowerVector */
+	u64 power_vector;
+};
+
+/* Measure the BPHY Local Oscillator. */
+void b43_lo_b_measure(struct b43_wldev *dev);
+/* Measure the BPHY/GPHY Local Oscillator. */
+void b43_lo_g_measure(struct b43_wldev *dev);
+
+/* Adjust the Local Oscillator to the saved attenuation
+ * and txctl values.
+ */
+void b43_lo_g_adjust(struct b43_wldev *dev);
+/* Adjust to specific values. */
+void b43_lo_g_adjust_to(struct b43_wldev *dev,
+			u16 rfatt, u16 bbatt, u16 tx_control);
+
+/* Mark all possible b43_lo_g_ctl as "unused" */
+void b43_lo_g_ctl_mark_all_unused(struct b43_wldev *dev);
+/* Mark the b43_lo_g_ctl corresponding to the current
+ * attenuation values as used.
+ */
+void b43_lo_g_ctl_mark_cur_used(struct b43_wldev *dev);
+
+/* Get a reference to a LO Control value pair in the
+ * TX Power LO Control Array.
+ */
+struct b43_loctl *b43_get_lo_g_ctl(struct b43_wldev *dev,
+				   const struct b43_rfatt *rfatt,
+				   const struct b43_bbatt *bbatt);
+
+#endif /* B43_LO_H_ */

drivers/net/wireless/b43/main.h

+/*
+
+  Broadcom B43 wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+                     Stefano Brivio <st3@riseup.net>
+                     Michael Buesch <mb@bu3sch.de>
+                     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.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#ifndef B43_MAIN_H_
+#define B43_MAIN_H_
+
+#include "b43.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 b43_freq_to_channel_a(int freq)
+{
+	return ((freq - 5000) / 5);
+}
+static inline u8 b43_freq_to_channel_bg(int freq)
+{
+	u8 channel;
+
+	if (freq == 2484)
+		channel = 14;
+	else
+		channel = (freq - 2407) / 5;
+
+	return channel;
+}
+static inline u8 b43_freq_to_channel(struct b43_wldev *dev, int freq)
+{
+	if (dev->phy.type == B43_PHYTYPE_A)
+		return b43_freq_to_channel_a(freq);
+	return b43_freq_to_channel_bg(freq);
+}
+
+/* Lightweight function to convert a channel number to a frequency (in Mhz). */
+static inline int b43_channel_to_freq_a(u8 channel)
+{
+	return (5000 + (5 * channel));
+}
+static inline int b43_channel_to_freq_bg(u8 channel)
+{
+	int freq;
+
+	if (channel == 14)
+		freq = 2484;
+	else
+		freq = 2407 + (5 * channel);
+
+	return freq;
+}
+static inline int b43_channel_to_freq(struct b43_wldev *dev, u8 channel)
+{
+	if (dev->phy.type == B43_PHYTYPE_A)
+		return b43_channel_to_freq_a(channel);
+	return b43_channel_to_freq_bg(channel);
+}
+
+static inline int b43_is_cck_rate(int rate)
+{
+	return (rate == B43_CCK_RATE_1MB ||
+		rate == B43_CCK_RATE_2MB ||
+		rate == B43_CCK_RATE_5MB || rate == B43_CCK_RATE_11MB);
+}
+
+static inline int b43_is_ofdm_rate(int rate)
+{
+	return !b43_is_cck_rate(rate);
+}
+
+static inline int b43_is_hw_radio_enabled(struct b43_wldev *dev)
+{
+	/* function to return state of hardware enable of radio
+	 * returns 0 if radio disabled, 1 if radio enabled
+	 */
+	struct b43_phy *phy = &dev->phy;
+
+	if (phy->rev >= 3)
+		return ((b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
+			 & B43_MMIO_RADIO_HWENABLED_HI_MASK)
+			== 0) ? 1 : 0;
+	else
+		return ((b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
+			 & B43_MMIO_RADIO_HWENABLED_LO_MASK)
+			== 0) ? 0 : 1;
+}
+
+void b43_tsf_read(struct b43_wldev *dev, u64 * tsf);
+void b43_tsf_write(struct b43_wldev *dev, u64 tsf);
+
+u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset);
+u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset);
+void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value);
+void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value);
+
+u32 b43_hf_read(struct b43_wldev *dev);
+void b43_hf_write(struct b43_wldev *dev, u32 value);
+
+void b43_dummy_transmission(struct b43_wldev *dev);
+
+void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags);
+
+void b43_mac_suspend(struct b43_wldev *dev);
+void b43_mac_enable(struct b43_wldev *dev);
+
+void b43_controller_restart(struct b43_wldev *dev, const char *reason);
+
+#define B43_PS_ENABLED	(1 << 0)	/* Force enable hardware power saving */
+#define B43_PS_DISABLED	(1 << 1)	/* Force disable hardware power saving */
+#define B43_PS_AWAKE	(1 << 2)	/* Force device awake */
+#define B43_PS_ASLEEP	(1 << 3)	/* Force device asleep */
+void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags);
+
+#endif /* B43_MAIN_H_ */

drivers/net/wireless/b43/pcmcia.c

+/*
+
+  Broadcom B43 wireless driver
+
+  Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include <linux/ssb/ssb.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+static /*const */ struct pcmcia_device_id b43_pcmcia_tbl[] = {
+	PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
+	PCMCIA_DEVICE_NULL,
+};
+
+MODULE_DEVICE_TABLE(pcmcia, b43_pcmcia_tbl);
+
+#ifdef CONFIG_PM
+static int b43_pcmcia_suspend(struct pcmcia_device *dev)
+{
+	//TODO
+	return 0;
+}
+
+static int b43_pcmcia_resume(struct pcmcia_device *dev)
+{
+	//TODO
+	return 0;
+}
+#else /* CONFIG_PM */
+# define b43_pcmcia_suspend		NULL
+# define b43_pcmcia_resume		NULL
+#endif /* CONFIG_PM */
+
+static int __devinit b43_pcmcia_probe(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb;
+	win_req_t win;
+	memreq_t mem;
+	tuple_t tuple;
+	cisparse_t parse;
+	int err = -ENOMEM;
+	int res;
+	unsigned char buf[64];
+
+	ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
+	if (!ssb)
+		goto out;
+
+	err = -ENODEV;
+	tuple.DesiredTuple = CISTPL_CONFIG;
+	tuple.Attributes = 0;
+	tuple.TupleData = buf;
+	tuple.TupleDataMax = sizeof(buf);
+	tuple.TupleOffset = 0;
+
+	res = pcmcia_get_first_tuple(dev, &tuple);
+	if (res != CS_SUCCESS)
+		goto err_kfree_ssb;
+	res = pcmcia_get_tuple_data(dev, &tuple);
+	if (res != CS_SUCCESS)
+		goto err_kfree_ssb;
+	res = pcmcia_parse_tuple(dev, &tuple, &parse);
+	if (res != CS_SUCCESS)
+		goto err_kfree_ssb;
+
+	dev->conf.ConfigBase = parse.config.base;
+	dev->conf.Present = parse.config.rmask[0];
+
+	dev->io.BasePort2 = 0;
+	dev->io.NumPorts2 = 0;
+	dev->io.Attributes2 = 0;
+
+	win.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT;
+	win.Base = 0;
+	win.Size = SSB_CORE_SIZE;
+	win.AccessSpeed = 1000;
+	res = pcmcia_request_window(&dev, &win, &dev->win);
+	if (res != CS_SUCCESS)
+		goto err_kfree_ssb;
+
+	mem.CardOffset = 0;
+	mem.Page = 0;
+	res = pcmcia_map_mem_page(dev->win, &mem);
+	if (res != CS_SUCCESS)
+		goto err_kfree_ssb;
+
+	res = pcmcia_request_configuration(dev, &dev->conf);
+	if (res != CS_SUCCESS)
+		goto err_disable;
+
+	err = ssb_bus_pcmciabus_register(ssb, dev, win.Base);
+	dev->priv = ssb;
+
+      out:
+	return err;
+      err_disable:
+	pcmcia_disable_device(dev);
+      err_kfree_ssb:
+	kfree(ssb);
+	return err;
+}
+
+static void __devexit b43_pcmcia_remove(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb = dev->priv;
+
+	ssb_bus_unregister(ssb);
+	pcmcia_release_window(dev->win);
+	pcmcia_disable_device(dev);
+	kfree(ssb);
+	dev->priv = NULL;
+}
+
+static struct pcmcia_driver b43_pcmcia_driver = {
+	.owner = THIS_MODULE,
+	.drv = {
+		.name = "b43-pcmcia",
+		},
+	.id_table = b43_pcmcia_tbl,
+	.probe = b43_pcmcia_probe,
+	.remove = b43_pcmcia_remove,
+	.suspend = b43_pcmcia_suspend,
+	.resume = b43_pcmcia_resume,
+};
+
+int b43_pcmcia_init(void)
+{
+	return pcmcia_register_driver(&b43_pcmcia_driver);
+}
+
+void b43_pcmcia_exit(void)
+{
+	pcmcia_unregister_driver(&b43_pcmcia_driver);
+}

drivers/net/wireless/b43/pcmcia.h

+#ifndef B43_PCMCIA_H_
+#define B43_PCMCIA_H_
+
+#ifdef CONFIG_B43_PCMCIA
+
+int b43_pcmcia_init(void);
+void b43_pcmcia_exit(void);
+
+#else /* CONFIG_B43_PCMCIA */
+
+static inline int b43_pcmcia_init(void)
+{
+	return 0;
+}
+static inline void b43_pcmcia_exit(void)
+{
+}
+
+#endif /* CONFIG_B43_PCMCIA */
+#endif /* B43_PCMCIA_H_ */

drivers/net/wireless/b43/phy.h

+#ifndef B43_PHY_H_
+#define B43_PHY_H_
+
+#include <linux/types.h>
+
+struct b43_wldev;
+struct b43_phy;
+
+/*** PHY Registers ***/
+
+/* Routing */
+#define B43_PHYROUTE_OFDM_GPHY		0x400
+#define B43_PHYROUTE_EXT_GPHY		0x800
+
+/* Base registers. */
+#define B43_PHY_BASE(reg)		(reg)
+/* OFDM (A) registers of a G-PHY */
+#define B43_PHY_OFDM(reg)		((reg) | B43_PHYROUTE_OFDM_GPHY)
+/* Extended G-PHY registers */
+#define B43_PHY_EXTG(reg)		((reg) | B43_PHYROUTE_EXT_GPHY)
+
+/* OFDM (A) PHY Registers */
+#define B43_PHY_VERSION_OFDM		B43_PHY_OFDM(0x00)	/* Versioning register for A-PHY */
+#define B43_PHY_BBANDCFG		B43_PHY_OFDM(0x01)	/* Baseband config */
+#define  B43_PHY_BBANDCFG_RXANT		0x180	/* RX Antenna selection */
+#define  B43_PHY_BBANDCFG_RXANT_SHIFT	7
+#define B43_PHY_PWRDOWN			B43_PHY_OFDM(0x03)	/* Powerdown */
+#define B43_PHY_CRSTHRES1		B43_PHY_OFDM(0x06)	/* CRS Threshold 1 */
+#define B43_PHY_LNAHPFCTL		B43_PHY_OFDM(0x1C)	/* LNA/HPF control */
+#define B43_PHY_ADIVRELATED		B43_PHY_OFDM(0x27)	/* FIXME rename */
+#define B43_PHY_CRS0			B43_PHY_OFDM(0x29)
+#define B43_PHY_ANTDWELL		B43_PHY_OFDM(0x2B)	/* Antenna dwell */
+#define  B43_PHY_ANTDWELL_AUTODIV1	0x0100	/* Automatic RX diversity start antenna */
+#define B43_PHY_ENCORE			B43_PHY_OFDM(0x49)	/* "Encore" (RangeMax / BroadRange) */
+#define  B43_PHY_ENCORE_EN		0x0200	/* Encore enable */
+#define B43_PHY_LMS			B43_PHY_OFDM(0x55)
+#define B43_PHY_OFDM61			B43_PHY_OFDM(0x61)	/* FIXME rename */
+#define  B43_PHY_OFDM61_10		0x0010	/* FIXME rename */
+#define B43_PHY_IQBAL			B43_PHY_OFDM(0x69)	/* I/Q balance */
+#define B43_PHY_OTABLECTL		B43_PHY_OFDM(0x72)	/* OFDM table control (see below) */
+#define  B43_PHY_OTABLEOFF		0x03FF	/* OFDM table offset (see below) */
+#define  B43_PHY_OTABLENR		0xFC00	/* OFDM table number (see below) */
+#define  B43_PHY_OTABLENR_SHIFT		10
+#define B43_PHY_OTABLEI			B43_PHY_OFDM(0x73)	/* OFDM table data I */
+#define B43_PHY_OTABLEQ			B43_PHY_OFDM(0x74)	/* OFDM table data Q */
+#define B43_PHY_HPWR_TSSICTL		B43_PHY_OFDM(0x78)	/* Hardware power TSSI control */
+#define B43_PHY_NRSSITHRES		B43_PHY_OFDM(0x8A)	/* NRSSI threshold */
+#define B43_PHY_ANTWRSETT		B43_PHY_OFDM(0x8C)	/* Antenna WR settle */
+#define  B43_PHY_ANTWRSETT_ARXDIV	0x2000	/* Automatic RX diversity enabled */
+#define B43_PHY_CLIPPWRDOWNT		B43_PHY_OFDM(0x93)	/* Clip powerdown threshold */
+#define B43_PHY_OFDM9B			B43_PHY_OFDM(0x9B)	/* FIXME rename */
+#define B43_PHY_N1P1GAIN		B43_PHY_OFDM(0xA0)
+#define B43_PHY_P1P2GAIN		B43_PHY_OFDM(0xA1)
+#define B43_PHY_N1N2GAIN		B43_PHY_OFDM(0xA2)
+#define B43_PHY_CLIPTHRES		B43_PHY_OFDM(0xA3)
+#define B43_PHY_CLIPN1P2THRES		B43_PHY_OFDM(0xA4)
+#define B43_PHY_DIVSRCHIDX		B43_PHY_OFDM(0xA8)	/* Divider search gain/index */
+#define B43_PHY_CLIPP2THRES		B43_PHY_OFDM(0xA9)
+#define B43_PHY_CLIPP3THRES		B43_PHY_OFDM(0xAA)
+#define B43_PHY_DIVP1P2GAIN		B43_PHY_OFDM(0xAB)
+#define B43_PHY_DIVSRCHGAINBACK		B43_PHY_OFDM(0xAD)	/* Divider search gain back */
+#define B43_PHY_DIVSRCHGAINCHNG		B43_PHY_OFDM(0xAE)	/* Divider search gain change */
+#define B43_PHY_CRSTHRES1_R1		B43_PHY_OFDM(0xC0)	/* CRS Threshold 1 (rev 1 only) */
+#define B43_PHY_CRSTHRES2_R1		B43_PHY_OFDM(0xC1)	/* CRS Threshold 2 (rev 1 only) */
+#define B43_PHY_TSSIP_LTBASE		B43_PHY_OFDM(0x380)	/* TSSI power lookup table base */
+#define B43_PHY_DC_LTBASE		B43_PHY_OFDM(0x3A0)	/* DC lookup table base */
+#define B43_PHY_GAIN_LTBASE		B43_PHY_OFDM(0x3C0)	/* Gain lookup table base */
+
+/* CCK (B) PHY Registers */
+#define B43_PHY_VERSION_CCK		B43_PHY_BASE(0x00)	/* Versioning register for B-PHY */
+#define B43_PHY_CCKBBANDCFG		B43_PHY_BASE(0x01)	/* Contains antenna 0/1 control bit */
+#define B43_PHY_PGACTL			B43_PHY_BASE(0x15)	/* PGA control */
+#define  B43_PHY_PGACTL_LPF		0x1000	/* Low pass filter (?) */
+#define  B43_PHY_PGACTL_LOWBANDW	0x0040	/* Low bandwidth flag */
+#define  B43_PHY_PGACTL_UNKNOWN		0xEFA0
+#define B43_PHY_FBCTL1			B43_PHY_BASE(0x18)	/* Frequency bandwidth control 1 */
+#define B43_PHY_ITSSI			B43_PHY_BASE(0x29)	/* Idle TSSI */
+#define B43_PHY_LO_LEAKAGE		B43_PHY_BASE(0x2D)	/* Measured LO leakage */
+#define B43_PHY_ENERGY			B43_PHY_BASE(0x33)	/* Energy */
+#define B43_PHY_SYNCCTL			B43_PHY_BASE(0x35)
+#define B43_PHY_FBCTL2			B43_PHY_BASE(0x38)	/* Frequency bandwidth control 2 */
+#define B43_PHY_DACCTL			B43_PHY_BASE(0x60)	/* DAC control */
+#define B43_PHY_RCCALOVER		B43_PHY_BASE(0x78)	/* RC calibration override */
+
+/* Extended G-PHY Registers */
+#define B43_PHY_CLASSCTL		B43_PHY_EXTG(0x02)	/* Classify control */
+#define B43_PHY_GTABCTL			B43_PHY_EXTG(0x03)	/* G-PHY table control (see below) */
+#define  B43_PHY_GTABOFF		0x03FF	/* G-PHY table offset (see below) */
+#define  B43_PHY_GTABNR			0xFC00	/* G-PHY table number (see below) */
+#define  B43_PHY_GTABNR_SHIFT		10
+#define B43_PHY_GTABDATA		B43_PHY_EXTG(0x04)	/* G-PHY table data */
+#define B43_PHY_LO_MASK			B43_PHY_EXTG(0x0F)	/* Local Oscillator control mask */
+#define B43_PHY_LO_CTL			B43_PHY_EXTG(0x10)	/* Local Oscillator control */
+#define B43_PHY_RFOVER			B43_PHY_EXTG(0x11)	/* RF override */
+#define B43_PHY_RFOVERVAL		B43_PHY_EXTG(0x12)	/* RF override value */
+#define  B43_PHY_RFOVERVAL_EXTLNA	0x8000
+#define  B43_PHY_RFOVERVAL_LNA		0x7000
+#define  B43_PHY_RFOVERVAL_LNA_SHIFT	12
+#define  B43_PHY_RFOVERVAL_PGA		0x0F00
+#define  B43_PHY_RFOVERVAL_PGA_SHIFT	8
+#define  B43_PHY_RFOVERVAL_UNK		0x0010	/* Unknown, always set. */
+#define  B43_PHY_RFOVERVAL_TRSWRX	0x00E0
+#define  B43_PHY_RFOVERVAL_BW		0x0003	/* Bandwidth flags */
+#define   B43_PHY_RFOVERVAL_BW_LPF	0x0001	/* Low Pass Filter */
+#define   B43_PHY_RFOVERVAL_BW_LBW	0x0002	/* Low Bandwidth (when set), high when unset */
+#define B43_PHY_ANALOGOVER		B43_PHY_EXTG(0x14)	/* Analog override */
+#define B43_PHY_ANALOGOVERVAL		B43_PHY_EXTG(0x15)	/* Analog override value */
+
+/*** OFDM table numbers ***/
+#define B43_OFDMTAB(number, offset)	(((number) << B43_PHY_OTABLENR_SHIFT) | (offset))
+#define B43_OFDMTAB_AGC1		B43_OFDMTAB(0x00, 0)
+#define B43_OFDMTAB_GAIN0		B43_OFDMTAB(0x00, 0)
+#define B43_OFDMTAB_GAINX		B43_OFDMTAB(0x01, 0)	//TODO rename
+#define B43_OFDMTAB_GAIN1		B43_OFDMTAB(0x01, 4)
+#define B43_OFDMTAB_AGC3		B43_OFDMTAB(0x02, 0)
+#define B43_OFDMTAB_GAIN2		B43_OFDMTAB(0x02, 3)
+#define B43_OFDMTAB_LNAHPFGAIN1		B43_OFDMTAB(0x03, 0)
+#define B43_OFDMTAB_WRSSI		B43_OFDMTAB(0x04, 0)
+#define B43_OFDMTAB_LNAHPFGAIN2		B43_OFDMTAB(0x04, 0)
+#define B43_OFDMTAB_NOISESCALE		B43_OFDMTAB(0x05, 0)
+#define B43_OFDMTAB_AGC2		B43_OFDMTAB(0x06, 0)
+#define B43_OFDMTAB_ROTOR		B43_OFDMTAB(0x08, 0)
+#define B43_OFDMTAB_ADVRETARD		B43_OFDMTAB(0x09, 0)
+#define B43_OFDMTAB_DAC			B43_OFDMTAB(0x0C, 0)
+#define B43_OFDMTAB_DC			B43_OFDMTAB(0x0E, 7)
+#define B43_OFDMTAB_PWRDYN2		B43_OFDMTAB(0x0E, 12)
+#define B43_OFDMTAB_LNAGAIN		B43_OFDMTAB(0x0E, 13)
+//TODO
+#define B43_OFDMTAB_LPFGAIN		B43_OFDMTAB(0x0F, 12)
+#define B43_OFDMTAB_RSSI		B43_OFDMTAB(0x10, 0)
+//TODO
+#define B43_OFDMTAB_AGC1_R1		B43_OFDMTAB(0x13, 0)
+#define B43_OFDMTAB_GAINX_R1		B43_OFDMTAB(0x14, 0)	//TODO rename
+#define B43_OFDMTAB_MINSIGSQ		B43_OFDMTAB(0x14, 1)
+#define B43_OFDMTAB_AGC3_R1		B43_OFDMTAB(0x15, 0)
+#define B43_OFDMTAB_WRSSI_R1		B43_OFDMTAB(0x15, 4)
+#define B43_OFDMTAB_TSSI		B43_OFDMTAB(0x15, 0)
+#define B43_OFDMTAB_DACRFPABB		B43_OFDMTAB(0x16, 0)
+#define B43_OFDMTAB_DACOFF		B43_OFDMTAB(0x17, 0)
+#define B43_OFDMTAB_DCBIAS		B43_OFDMTAB(0x18, 0)
+
+u16 b43_ofdmtab_read16(struct b43_wldev *dev, u16 table, u16 offset);
+void b43_ofdmtab_write16(struct b43_wldev *dev, u16 table,
+			 u16 offset, u16 value);
+u32 b43_ofdmtab_read32(struct b43_wldev *dev, u16 table, u16 offset);
+void b43_ofdmtab_write32(struct b43_wldev *dev, u16 table,
+			 u16 offset, u32 value);
+
+/*** G-PHY table numbers */
+#define B43_GTAB(number, offset)	(((number) << B43_PHY_GTABNR_SHIFT) | (offset))
+#define B43_GTAB_NRSSI			B43_GTAB(0x00, 0)
+#define B43_GTAB_TRFEMW			B43_GTAB(0x0C, 0x120)
+#define B43_GTAB_ORIGTR			B43_GTAB(0x2E, 0x298)
+
+u16 b43_gtab_read(struct b43_wldev *dev, u16 table, u16 offset);	//TODO implement
+void b43_gtab_write(struct b43_wldev *dev, u16 table, u16 offset, u16 value);	//TODO implement
+
+#define B43_DEFAULT_CHANNEL_A	36
+#define B43_DEFAULT_CHANNEL_BG	6
+
+enum {
+	B43_ANTENNA0,		/* Antenna 0 */
+	B43_ANTENNA1,		/* Antenna 0 */
+	B43_ANTENNA_AUTO1,	/* Automatic, starting with antenna 1 */
+	B43_ANTENNA_AUTO0,	/* Automatic, starting with antenna 0 */
+
+	B43_ANTENNA_AUTO = B43_ANTENNA_AUTO0,
+	B43_ANTENNA_DEFAULT = B43_ANTENNA_AUTO,
+};
+
+enum {
+	B43_INTERFMODE_NONE,
+	B43_INTERFMODE_NONWLAN,
+	B43_INTERFMODE_MANUALWLAN,
+	B43_INTERFMODE_AUTOWLAN,
+};
+
+/* Masks for the different PHY versioning registers. */
+#define B43_PHYVER_ANALOG		0xF000
+#define B43_PHYVER_ANALOG_SHIFT		12
+#define B43_PHYVER_TYPE			0x0F00
+#define B43_PHYVER_TYPE_SHIFT		8
+#define B43_PHYVER_VERSION		0x00FF
+
+void b43_raw_phy_lock(struct b43_wldev *dev);
+#define b43_phy_lock(dev, flags) \
+	do {					\
+		local_irq_save(flags);		\
+		b43_raw_phy_lock(dev);	\
+	} while (0)
+void b43_raw_phy_unlock(struct b43_wldev *dev);
+#define b43_phy_unlock(dev, flags) \
+	do {					\
+		b43_raw_phy_unlock(dev);	\
+		local_irq_restore(flags);	\
+	} while (0)
+
+u16 b43_phy_read(struct b43_wldev *dev, u16 offset);
+void b43_phy_write(struct b43_wldev *dev, u16 offset, u16 val);
+
+int b43_phy_init_tssi2dbm_table(struct b43_wldev *dev);
+
+void b43_phy_early_init(struct b43_wldev *dev);
+int b43_phy_init(struct b43_wldev *dev);
+
+void b43_set_rx_antenna(struct b43_wldev *dev, int antenna);
+
+void b43_phy_xmitpower(struct b43_wldev *dev);
+void b43_gphy_dc_lt_init(struct b43_wldev *dev);
+
+/* Returns the boolean whether the board has HardwarePowerControl */
+bool b43_has_hardware_pctl(struct b43_phy *phy);
+/* Returns the boolean whether "TX Magnification" is enabled. */
+#define has_tx_magnification(phy) \
+	(((phy)->rev >= 2) &&			\
+	 ((phy)->radio_ver == 0x2050) &&	\
+	 ((phy)->radio_rev == 8))
+/* Card uses the loopback gain stuff */
+#define has_loopback_gain(phy) \
+	(((phy)->rev > 1) || ((phy)->gmode))
+
+/* Radio Attenuation (RF Attenuation) */
+struct b43_rfatt {
+	u8 att;			/* Attenuation value */
+	bool with_padmix;	/* Flag, PAD Mixer enabled. */
+};
+struct b43_rfatt_list {
+	/* Attenuation values list */
+	const struct b43_rfatt *list;
+	u8 len;
+	/* Minimum/Maximum attenuation values */
+	u8 min_val;
+	u8 max_val;
+};
+
+/* Baseband Attenuation */
+struct b43_bbatt {
+	u8 att;			/* Attenuation value */
+};
+struct b43_bbatt_list {
+	/* Attenuation values list */
+	const struct b43_bbatt *list;
+	u8 len;
+	/* Minimum/Maximum attenuation values */
+	u8 min_val;
+	u8 max_val;
+};
+
+/* tx_control bits. */
+#define B43_TXCTL_PA3DB		0x40	/* PA Gain 3dB */
+#define B43_TXCTL_PA2DB		0x20	/* PA Gain 2dB */
+#define B43_TXCTL_TXMIX		0x10	/* TX Mixer Gain */
+
+/* Write BasebandAttenuation value to the device. */
+void b43_phy_set_baseband_attenuation(struct b43_wldev *dev,
+				      u16 baseband_attenuation);
+
+extern const u8 b43_radio_channel_codes_bg[];
+
+void b43_radio_lock(struct b43_wldev *dev);
+void b43_radio_unlock(struct b43_wldev *dev);
+
+u16 b43_radio_read16(struct b43_wldev *dev, u16 offset);
+void b43_radio_write16(struct b43_wldev *dev, u16 offset, u16 val);
+
+u16 b43_radio_init2050(struct b43_wldev *dev);
+void b43_radio_init2060(struct b43_wldev *dev);
+
+void b43_radio_turn_on(struct b43_wldev *dev);
+void b43_radio_turn_off(struct b43_wldev *dev);
+
+int b43_radio_selectchannel(struct b43_wldev *dev, u8 channel,
+			    int synthetic_pu_workaround);
+
+u8 b43_radio_aci_detect(struct b43_wldev *dev, u8 channel);
+u8 b43_radio_aci_scan(struct b43_wldev *dev);
+
+int b43_radio_set_interference_mitigation(struct b43_wldev *dev, int mode);
+
+void b43_calc_nrssi_slope(struct b43_wldev *dev);
+void b43_calc_nrssi_threshold(struct b43_wldev *dev);
+s16 b43_nrssi_hw_read(struct b43_wldev *dev, u16 offset);
+void b43_nrssi_hw_write(struct b43_wldev *dev, u16 offset, s16 val);
+void b43_nrssi_hw_update(struct b43_wldev *dev, u16 val);
+void b43_nrssi_mem_update(struct b43_wldev *dev);
+
+void b43_radio_set_tx_iq(struct b43_wldev *dev);
+u16 b43_radio_calibrationvalue(struct b43_wldev *dev);
+
+void b43_put_attenuation_into_ranges(struct b43_wldev *dev,
+				     int *_bbatt, int *_rfatt);
+
+void b43_set_txpower_g(struct b43_wldev *dev,
+		       const struct b43_bbatt *bbatt,
+		       const struct b43_rfatt *rfatt, u8 tx_control);
+
+#endif /* B43_PHY_H_ */

drivers/net/wireless/b43/pio.c

+/*
+
+  Broadcom B43 wireless driver
+
+  PIO Transmission
+
+  Copyright (c) 2005 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "pio.h"
+#include "main.h"
+#include "xmit.h"
+
+#include <linux/delay.h>
+
+static void tx_start(struct b43_pioqueue *queue)
+{
+	b43_pio_write(queue, B43_PIO_TXCTL, B43_PIO_TXCTL_INIT);
+}
+
+static void tx_octet(struct b43_pioqueue *queue, u8 octet)
+{
+	if (queue->need_workarounds) {
+		b43_pio_write(queue, B43_PIO_TXDATA, octet);
+		b43_pio_write(queue, B43_PIO_TXCTL, B43_PIO_TXCTL_WRITELO);
+	} else {
+		b43_pio_write(queue, B43_PIO_TXCTL, B43_PIO_TXCTL_WRITELO);
+		b43_pio_write(queue, B43_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(*((u16 *) (source + i)));
+	*pos += 2;
+
+	return ret;
+}
+
+static void tx_data(struct b43_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 b43_txhdr_fw4), &i);
+		b43_pio_write(queue, B43_PIO_TXDATA, data);
+	}
+	b43_pio_write(queue, B43_PIO_TXCTL,
+		      B43_PIO_TXCTL_WRITELO | B43_PIO_TXCTL_WRITEHI);
+	while (i < octets - 1) {
+		data = tx_get_next_word(txhdr, packet,
+					sizeof(struct b43_txhdr_fw4), &i);
+		b43_pio_write(queue, B43_PIO_TXDATA, data);
+	}
+	if (octets % 2)
+		tx_octet(queue,
+			 packet[octets - sizeof(struct b43_txhdr_fw4) - 1]);
+}
+
+static void tx_complete(struct b43_pioqueue *queue, struct sk_buff *skb)
+{
+	if (queue->need_workarounds) {
+		b43_pio_write(queue, B43_PIO_TXDATA, skb->data[skb->len - 1]);
+		b43_pio_write(queue, B43_PIO_TXCTL,
+			      B43_PIO_TXCTL_WRITELO | B43_PIO_TXCTL_COMPLETE);
+	} else {
+		b43_pio_write(queue, B43_PIO_TXCTL, B43_PIO_TXCTL_COMPLETE);
+	}
+}
+
+static u16 generate_cookie(struct b43_pioqueue *queue,
+			   struct b43_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 B43_MMIO_PIO1_BASE:
+		break;
+	case B43_MMIO_PIO2_BASE:
+		cookie = 0x1000;
+		break;
+	case B43_MMIO_PIO3_BASE:
+		cookie = 0x2000;
+		break;
+	case B43_MMIO_PIO4_BASE:
+		cookie = 0x3000;
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+	packetindex = pio_txpacket_getindex(packet);
+	B43_WARN_ON(packetindex & ~0x0FFF);
+	cookie |= (u16) packetindex;
+
+	return cookie;
+}
+
+static
+struct b43_pioqueue *parse_cookie(struct b43_wldev *dev,
+				  u16 cookie, struct b43_pio_txpacket **packet)
+{
+	struct b43_pio *pio = &dev->pio;
+	struct b43_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:
+		B43_WARN_ON(1);
+	}
+	packetindex = (cookie & 0x0FFF);
+	B43_WARN_ON(!(packetindex >= 0 && packetindex < B43_PIO_MAXTXPACKETS));
+	*packet = &(queue->tx_packets_cache[packetindex]);
+
+	return queue;
+}
+
+union txhdr_union {
+	struct b43_txhdr_fw4 txhdr_fw4;
+};
+
+static void pio_tx_write_fragment(struct b43_pioqueue *queue,
+				  struct sk_buff *skb,
+				  struct b43_pio_txpacket *packet,
+				  size_t txhdr_size)
+{
+	union txhdr_union txhdr_data;
+	u8 *txhdr = NULL;
+	unsigned int octets;
+
+	txhdr = (u8 *) (&txhdr_data.txhdr_fw4);
+
+	B43_WARN_ON(skb_shinfo(skb)->nr_frags);
+	b43_generate_txhdr(queue->dev,
+			   txhdr, skb->data, skb->len,
+			   &packet->txstat.control,
+			   generate_cookie(queue, packet));
+
+	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);
+}
+
+static void free_txpacket(struct b43_pio_txpacket *packet)
+{
+	struct b43_pioqueue *queue = packet->queue;
+
+	if (packet->skb)
+		dev_kfree_skb_any(packet->skb);
+	list_move(&packet->list, &queue->txfree);
+	queue->nr_txfree++;
+}
+
+static int pio_tx_packet(struct b43_pio_txpacket *packet)
+{
+	struct b43_pioqueue *queue = packet->queue;
+	struct sk_buff *skb = packet->skb;
+	u16 octets;
+
+	octets = (u16) skb->len + sizeof(struct b43_txhdr_fw4);
+	if (queue->tx_devq_size < octets) {
+		b43warn(queue->dev->wl, "PIO queue too small. "
+			"Dropping packet.\n");
+		/* Drop it silently (return success) */
+		free_txpacket(packet);
+		return 0;
+	}
+	B43_WARN_ON(queue->tx_devq_packets > B43_PIO_MAXTXDEVQPACKETS);
+	B43_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 == B43_PIO_MAXTXDEVQPACKETS)
+		return -EBUSY;
+	if (queue->tx_devq_used + octets > queue->tx_devq_size)
+		return -EBUSY;
+	/* Now poke the device. */
+	pio_tx_write_fragment(queue, skb, packet, sizeof(struct b43_txhdr_fw4));
+
+	/* 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(unsigned long d)
+{
+	struct b43_pioqueue *queue = (struct b43_pioqueue *)d;
+	struct b43_wldev *dev = queue->dev;
+	unsigned long flags;
+	struct b43_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 = b43_pio_read(queue, B43_PIO_TXCTL);
+	if (txctl & B43_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 b43_pioqueue *queue)
+{
+	struct b43_pio_txpacket *packet;
+	int i;
+
+	queue->nr_txfree = B43_PIO_MAXTXPACKETS;
+	for (i = 0; i < B43_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 b43_pioqueue *b43_setup_pioqueue(struct b43_wldev *dev,
+					u16 pio_mmio_base)
+{
+	struct b43_pioqueue *queue;
+	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_init(&queue->txtask, tx_tasklet, (unsigned long)queue);
+
+	b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
+		    & ~B43_MACCTL_BE);
+
+	qsize = b43_read16(dev, queue->mmio_base + B43_PIO_TXQBUFSIZE);
+	if (qsize == 0) {
+		b43err(dev->wl, "This card does not support PIO "
+		       "operation mode. Please use DMA mode "
+		       "(module parameter pio=0).\n");
+		goto err_freequeue;
+	}
+	if (qsize <= B43_PIO_TXQADJUST) {
+		b43err(dev->wl, "PIO tx device-queue too small (%u)\n", qsize);
+		goto err_freequeue;
+	}
+	qsize -= B43_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 b43_pioqueue *queue)
+{
+	struct b43_pio_txpacket *packet, *tmp_packet;
+
+	tasklet_disable(&queue->txtask);
+
+	list_for_each_entry_safe(packet, tmp_packet, &queue->txrunning, list)
+	    free_txpacket(packet);
+	list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list)
+	    free_txpacket(packet);
+}
+
+static void b43_destroy_pioqueue(struct b43_pioqueue *queue)
+{
+	if (!queue)
+		return;
+
+	cancel_transfers(queue);
+	kfree(queue);
+}
+
+void b43_pio_free(struct b43_wldev *dev)
+{
+	struct b43_pio *pio;
+
+	if (!b43_using_pio(dev))
+		return;
+	pio = &dev->pio;
+
+	b43_destroy_pioqueue(pio->queue3);
+	pio->queue3 = NULL;
+	b43_destroy_pioqueue(pio->queue2);
+	pio->queue2 = NULL;
+	b43_destroy_pioqueue(pio->queue1);
+	pio->queue1 = NULL;
+	b43_destroy_pioqueue(pio->queue0);
+	pio->queue0 = NULL;
+}
+
+int b43_pio_init(struct b43_wldev *dev)
+{
+	struct b43_pio *pio = &dev->pio;
+	struct b43_pioqueue *queue;
+	int err = -ENOMEM;
+
+	queue = b43_setup_pioqueue(dev, B43_MMIO_PIO1_BASE);
+	if (!queue)
+		goto out;
+	pio->queue0 = queue;
+
+	queue = b43_setup_pioqueue(dev, B43_MMIO_PIO2_BASE);
+	if (!queue)
+		goto err_destroy0;
+	pio->queue1 = queue;
+
+	queue = b43_setup_pioqueue(dev, B43_MMIO_PIO3_BASE);
+	if (!queue)
+		goto err_destroy1;
+	pio->queue2 = queue;
+
+	queue = b43_setup_pioqueue(dev, B43_MMIO_PIO4_BASE);
+	if (!queue)
+		goto err_destroy2;
+	pio->queue3 = queue;
+
+	if (dev->dev->id.revision < 3)
+		dev->irq_savedstate |= B43_IRQ_PIO_WORKAROUND;
+
+	b43dbg(dev->wl, "PIO initialized\n");
+	err = 0;
+      out:
+	return err;
+
+      err_destroy2:
+	b43_destroy_pioqueue(pio->queue2);
+	pio->queue2 = NULL;
+      err_destroy1:
+	b43_destroy_pioqueue(pio->queue1);
+	pio->queue1 = NULL;
+      err_destroy0:
+	b43_destroy_pioqueue(pio->queue0);
+	pio->queue0 = NULL;
+	goto out;
+}
+
+int b43_pio_tx(struct b43_wldev *dev,
+	       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
+{
+	struct b43_pioqueue *queue = dev->pio.queue1;
+	struct b43_pio_txpacket *packet;
+
+	B43_WARN_ON(queue->tx_suspended);
+	B43_WARN_ON(list_empty(&queue->txfree));
+
+	packet = list_entry(queue->txfree.next, struct b43_pio_txpacket, list);
+	packet->skb = skb;
+
+	memset(&packet->txstat, 0, sizeof(packet->txstat));
+	memcpy(&packet->txstat.control, ctl, sizeof(*ctl));
+
+	list_move_tail(&packet->list, &queue->txqueue);
+	queue->nr_txfree--;
+	queue->nr_tx_packets++;
+	B43_WARN_ON(queue->nr_txfree >= B43_PIO_MAXTXPACKETS);
+
+	tasklet_schedule(&queue->txtask);
+
+	return 0;
+}
+
+void b43_pio_handle_txstatus(struct b43_wldev *dev,
+			     const struct b43_txstatus *status)
+{
+	struct b43_pioqueue *queue;
+	struct b43_pio_txpacket *packet;
+
+	queue = parse_cookie(dev, status->cookie, &packet);
+	if (B43_WARN_ON(!queue))
+		return;
+
+	queue->tx_devq_packets--;
+	queue->tx_devq_used -=
+	    (packet->skb->len + sizeof(struct b43_txhdr_fw4));
+
+	if (status->acked) {
+		packet->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+	} else {
+		if (!(packet->txstat.control.flags & IEEE80211_TXCTL_NO_ACK))
+			packet->txstat.excessive_retries = 1;
+	}
+	if (status->frame_count == 0) {
+		/* The frame was not transmitted at all. */
+		packet->txstat.retry_count = 0;
+	} else
+		packet->txstat.retry_count = status->frame_count - 1;
+	ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb,
+				    &(packet->txstat));
+	packet->skb = NULL;
+
+	free_txpacket(packet);
+	/* If there are packets on the txqueue, poke the tasklet
+	 * to transmit them.
+	 */
+	if (!list_empty(&queue->txqueue))
+		tasklet_schedule(&queue->txtask);
+}
+
+void b43_pio_get_tx_stats(struct b43_wldev *dev,
+			  struct ieee80211_tx_queue_stats *stats)
+{
+	struct b43_pio *pio = &dev->pio;
+	struct b43_pioqueue *queue;
+	struct ieee80211_tx_queue_stats_data *data;
+
+	queue = pio->queue1;
+	data = &(stats->data[0]);
+	data->len = B43_PIO_MAXTXPACKETS - queue->nr_txfree;
+	data->limit = B43_PIO_MAXTXPACKETS;
+	data->count = queue->nr_tx_packets;
+}
+
+static void pio_rx_error(struct b43_pioqueue *queue,
+			 int clear_buffers, const char *error)
+{
+	int i;
+
+	b43err(queue->dev->wl, "PIO RX error: %s\n", error);
+	b43_pio_write(queue, B43_PIO_RXCTL, B43_PIO_RXCTL_READY);
+	if (clear_buffers) {
+		B43_WARN_ON(queue->mmio_base != B43_MMIO_PIO1_BASE);
+		for (i = 0; i < 15; i++) {
+			/* Dummy read. */
+			b43_pio_read(queue, B43_PIO_RXDATA);
+		}
+	}
+}
+
+void b43_pio_rx(struct b43_pioqueue *queue)
+{
+	u16 preamble[21] = { 0 };
+	struct b43_rxhdr_fw4 *rxhdr;
+	u16 tmp, len, macstat;
+	int i, preamble_readwords;
+	struct sk_buff *skb;
+
+	tmp = b43_pio_read(queue, B43_PIO_RXCTL);
+	if (!(tmp & B43_PIO_RXCTL_DATAAVAILABLE))
+		return;
+	b43_pio_write(queue, B43_PIO_RXCTL, B43_PIO_RXCTL_DATAAVAILABLE);
+
+	for (i = 0; i < 10; i++) {
+		tmp = b43_pio_read(queue, B43_PIO_RXCTL);
+		if (tmp & B43_PIO_RXCTL_READY)
+			goto data_ready;
+		udelay(10);
+	}
+	b43dbg(queue->dev->wl, "PIO RX timed out\n");
+	return;
+      data_ready:
+
+	len = b43_pio_read(queue, B43_PIO_RXDATA);
+	if (unlikely(len > 0x700)) {
+		pio_rx_error(queue, 0, "len > 0x700");
+		return;
+	}
+	if (unlikely(len == 0 && queue->mmio_base != B43_MMIO_PIO4_BASE)) {
+		pio_rx_error(queue, 0, "len == 0");
+		return;
+	}
+	preamble[0] = cpu_to_le16(len);
+	if (queue->mmio_base == B43_MMIO_PIO4_BASE)
+		preamble_readwords = 14 / sizeof(u16);
+	else
+		preamble_readwords = 18 / sizeof(u16);
+	for (i = 0; i < preamble_readwords; i++) {
+		tmp = b43_pio_read(queue, B43_PIO_RXDATA);
+		preamble[i + 1] = cpu_to_le16(tmp);
+	}
+	rxhdr = (struct b43_rxhdr_fw4 *)preamble;
+	macstat = le16_to_cpu(rxhdr->mac_status);
+	if (macstat & B43_RX_MAC_FCSERR) {
+		pio_rx_error(queue,
+			     (queue->mmio_base == B43_MMIO_PIO1_BASE),
+			     "Frame FCS error");
+		return;
+	}
+	if (queue->mmio_base == B43_MMIO_PIO4_BASE) {
+		/* We received an xmit status. */
+		struct b43_hwtxstatus *hw;
+
+		hw = (struct b43_hwtxstatus *)(preamble + 1);
+		b43_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 = b43_pio_read(queue, B43_PIO_RXDATA);
+		*((u16 *) (skb->data + i)) = cpu_to_le16(tmp);
+	}
+	if (len % 2) {
+		tmp = b43_pio_read(queue, B43_PIO_RXDATA);
+		skb->data[len - 1] = (tmp & 0x00FF);
+/* The specs say the following is required, but
+ * it is wrong and corrupts the PLCP. If we don't do
+ * this, the PLCP seems to be correct. So ifdef it out for now.
+ */
+#if 0
+		if (rxflags2 & B43_RXHDR_FLAGS2_TYPE2FRAME)
+			skb->data[2] = (tmp & 0xFF00) >> 8;
+		else
+			skb->data[0] = (tmp & 0xFF00) >> 8;
+#endif
+	}
+	b43_rx(queue->dev, skb, rxhdr);
+}
+
+void b43_pio_tx_suspend(struct b43_pioqueue *queue)
+{
+	b43_power_saving_ctl_bits(queue->dev, B43_PS_AWAKE);
+	b43_pio_write(queue, B43_PIO_TXCTL, b43_pio_read(queue, B43_PIO_TXCTL)
+		      | B43_PIO_TXCTL_SUSPEND);
+}
+
+void b43_pio_tx_resume(struct b43_pioqueue *queue)
+{
+	b43_pio_write(queue, B43_PIO_TXCTL, b43_pio_read(queue, B43_PIO_TXCTL)
+		      & ~B43_PIO_TXCTL_SUSPEND);
+	b43_power_saving_ctl_bits(queue->dev, 0);
+	tasklet_schedule(&queue->txtask);
+}
+
+void b43_pio_freeze_txqueues(struct b43_wldev *dev)
+{
+	struct b43_pio *pio;
+
+	B43_WARN_ON(!b43_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 b43_pio_thaw_txqueues(struct b43_wldev *dev)
+{
+	struct b43_pio *pio;
+
+	B43_WARN_ON(!b43_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);
+}

drivers/net/wireless/b43/pio.h

+#ifndef B43_PIO_H_
+#define B43_PIO_H_
+
+#include "b43.h"
+
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+
+#define B43_PIO_TXCTL		0x00
+#define B43_PIO_TXDATA		0x02
+#define B43_PIO_TXQBUFSIZE		0x04
+#define B43_PIO_RXCTL		0x08
+#define B43_PIO_RXDATA		0x0A
+
+#define B43_PIO_TXCTL_WRITELO	(1 << 0)
+#define B43_PIO_TXCTL_WRITEHI	(1 << 1)
+#define B43_PIO_TXCTL_COMPLETE	(1 << 2)
+#define B43_PIO_TXCTL_INIT		(1 << 3)
+#define B43_PIO_TXCTL_SUSPEND	(1 << 7)
+
+#define B43_PIO_RXCTL_DATAAVAILABLE	(1 << 0)
+#define B43_PIO_RXCTL_READY		(1 << 1)
+
+/* PIO constants */
+#define B43_PIO_MAXTXDEVQPACKETS	31
+#define B43_PIO_TXQADJUST		80
+
+/* PIO tuning knobs */
+#define B43_PIO_MAXTXPACKETS	256
+
+#ifdef CONFIG_B43_PIO
+
+struct b43_pioqueue;
+struct b43_xmitstatus;
+
+struct b43_pio_txpacket {
+	struct b43_pioqueue *queue;
+	struct sk_buff *skb;
+	struct ieee80211_tx_status txstat;
+	struct list_head list;
+};
+
+#define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->tx_packets_cache))
+
+struct b43_pioqueue {
+	struct b43_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;
+	/* Total number or packets sent.
+	 * (This counter can obviously wrap).
+	 */
+	unsigned int nr_tx_packets;
+	struct tasklet_struct txtask;
+	struct b43_pio_txpacket tx_packets_cache[B43_PIO_MAXTXPACKETS];
+};
+
+static inline u16 b43_pio_read(struct b43_pioqueue *queue, u16 offset)
+{
+	return b43_read16(queue->dev, queue->mmio_base + offset);
+}
+
+static inline
+    void b43_pio_write(struct b43_pioqueue *queue, u16 offset, u16 value)
+{
+	b43_write16(queue->dev, queue->mmio_base + offset, value);
+	mmiowb();
+}
+
+int b43_pio_init(struct b43_wldev *dev);
+void b43_pio_free(struct b43_wldev *dev);
+
+int b43_pio_tx(struct b43_wldev *dev,
+	       struct sk_buff *skb, struct ieee80211_tx_control *ctl);
+void b43_pio_handle_txstatus(struct b43_wldev *dev,
+			     const struct b43_txstatus *status);
+void b43_pio_get_tx_stats(struct b43_wldev *dev,
+			  struct ieee80211_tx_queue_stats *stats);
+void b43_pio_rx(struct b43_pioqueue *queue);
+
+/* Suspend TX queue in hardware. */
+void b43_pio_tx_suspend(struct b43_pioqueue *queue);
+void b43_pio_tx_resume(struct b43_pioqueue *queue);
+/* Suspend (freeze) the TX tasklet (software level). */
+void b43_pio_freeze_txqueues(struct b43_wldev *dev);
+void b43_pio_thaw_txqueues(struct b43_wldev *dev);
+
+#else /* CONFIG_B43_PIO */
+
+static inline int b43_pio_init(struct b43_wldev *dev)
+{
+	return 0;
+}
+static inline void b43_pio_free(struct b43_wldev *dev)
+{
+}
+static inline
+    int b43_pio_tx(struct b43_wldev *dev,
+		   struct sk_buff *skb, struct ieee80211_tx_control *ctl)
+{
+	return 0;
+}
+static inline
+    void b43_pio_handle_txstatus(struct b43_wldev *dev,
+				 const struct b43_txstatus *status)
+{
+}
+static inline
+    void b43_pio_get_tx_stats(struct b43_wldev *dev,
+			      struct ieee80211_tx_queue_stats *stats)
+{
+}
+static inline void b43_pio_rx(struct b43_pioqueue *queue)
+{
+}
+static inline void b43_pio_tx_suspend(struct b43_pioqueue *queue)
+{
+}
+static inline void b43_pio_tx_resume(struct b43_pioqueue *queue)
+{
+}
+static inline void b43_pio_freeze_txqueues(struct b43_wldev *dev)
+{
+}
+static inline void b43_pio_thaw_txqueues(struct b43_wldev *dev)
+{
+}
+
+#endif /* CONFIG_B43_PIO */
+#endif /* B43_PIO_H_ */

drivers/net/wireless/b43/sysfs.c

+/*
+
+  Broadcom B43 wireless driver
+
+  SYSFS support routines
+
+  Copyright (c) 2006 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "sysfs.h"
+#include "main.h"
+#include "phy.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;
+
+	if (count == 0)
+		goto out;
+	count = min(count, (size_t) 10);
+	memcpy(tmp, buf, count);
+	ret = simple_strtol(tmp, NULL, 10);
+      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 b43_attr_interfmode_show(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct b43_wldev *wldev = dev_to_b43_wldev(dev);
+	ssize_t count = 0;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	mutex_lock(&wldev->wl->mutex);
+
+	switch (wldev->phy.interfmode) {
+	case B43_INTERFMODE_NONE:
+		count =
+		    snprintf(buf, PAGE_SIZE,
+			     "0 (No Interference Mitigation)\n");
+		break;
+	case B43_INTERFMODE_NONWLAN:
+		count =
+		    snprintf(buf, PAGE_SIZE,
+			     "1 (Non-WLAN Interference Mitigation)\n");
+		break;
+	case B43_INTERFMODE_MANUALWLAN:
+		count =
+		    snprintf(buf, PAGE_SIZE,
+			     "2 (WLAN Interference Mitigation)\n");
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+
+	mutex_unlock(&wldev->wl->mutex);
+
+	return count;
+}
+
+static ssize_t b43_attr_interfmode_store(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct b43_wldev *wldev = dev_to_b43_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 = B43_INTERFMODE_NONE;
+		break;
+	case 1:
+		mode = B43_INTERFMODE_NONWLAN;
+		break;
+	case 2:
+		mode = B43_INTERFMODE_MANUALWLAN;
+		break;
+	case 3:
+		mode = B43_INTERFMODE_AUTOWLAN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&wldev->wl->mutex);
+	spin_lock_irqsave(&wldev->wl->irq_lock, flags);
+
+	err = b43_radio_set_interference_mitigation(wldev, mode);
+	if (err) {
+		b43err(wldev->wl, "Interference Mitigation not "
+		       "supported by device\n");
+	}
+	mmiowb();
+	spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
+	mutex_unlock(&wldev->wl->mutex);
+
+	return err ? err : count;
+}
+
+static DEVICE_ATTR(interference, 0644,
+		   b43_attr_interfmode_show, b43_attr_interfmode_store);
+
+static ssize_t b43_attr_preamble_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct b43_wldev *wldev = dev_to_b43_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 b43_attr_preamble_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t count)
+{
+	struct b43_wldev *wldev = dev_to_b43_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,
+		   b43_attr_preamble_show, b43_attr_preamble_store);
+
+int b43_sysfs_register(struct b43_wldev *wldev)
+{
+	struct device *dev = wldev->dev->dev;
+	int err;
+
+	B43_WARN_ON(b43_status(wldev) != B43_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 b43_sysfs_unregister(struct b43_wldev *wldev)
+{
+	struct device *dev = wldev->dev->dev;
+
+	device_remove_file(dev, &dev_attr_shortpreamble);
+	device_remove_file(dev, &dev_attr_interference);
+}

drivers/net/wireless/b43/sysfs.h

+#ifndef B43_SYSFS_H_
+#define B43_SYSFS_H_
+
+struct b43_wldev;
+
+int b43_sysfs_register(struct b43_wldev *dev);
+void b43_sysfs_unregister(struct b43_wldev *dev);
+
+#endif /* B43_SYSFS_H_ */

drivers/net/wireless/b43/tables.c

+/*
+
+  Broadcom B43 wireless driver
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+  Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
+  Copyright (c) 2006, 2006 Michael Buesch <mb@bu3sch.de>
+  Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "tables.h"
+#include "phy.h"
+
+const u32 b43_tab_rotor[] = {
+	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 b43_tab_retard[] = {
+	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 b43_tab_finefreqa[] = {
+	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 b43_tab_finefreqg[] = {
+	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 b43_tab_noisea2[] = {
+	0x0001, 0x0001, 0x0001, 0xFFFE,
+	0xFFFE, 0x3FFF, 0x1000, 0x0393,
+};
+
+const u16 b43_tab_noisea3[] = {
+	0x4C4C, 0x4C4C, 0x4C4C, 0x2D36,
+	0x4C4C, 0x4C4C, 0x4C4C, 0x2D36,
+};
+
+const u16 b43_tab_noiseg1[] = {
+	0x013C, 0x01F5, 0x031A, 0x0631,
+	0x0001, 0x0001, 0x0001, 0x0001,
+};
+
+const u16 b43_tab_noiseg2[] = {
+	0x5484, 0x3C40, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+};
+
+const u16 b43_tab_noisescaleg1[] = {
+	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 b43_tab_noisescaleg2[] = {
+	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 b43_tab_noisescaleg3[] = {
+	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 b43_tab_sigmasqr1[] = {
+	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 b43_tab_sigmasqr2[] = {
+	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,
+};
+
+static inline void assert_sizes(void)
+{
+	BUILD_BUG_ON(B43_TAB_ROTOR_SIZE != ARRAY_SIZE(b43_tab_rotor));
+	BUILD_BUG_ON(B43_TAB_RETARD_SIZE != ARRAY_SIZE(b43_tab_retard));
+	BUILD_BUG_ON(B43_TAB_FINEFREQA_SIZE != ARRAY_SIZE(b43_tab_finefreqa));
+	BUILD_BUG_ON(B43_TAB_FINEFREQG_SIZE != ARRAY_SIZE(b43_tab_finefreqg));
+	BUILD_BUG_ON(B43_TAB_NOISEA2_SIZE != ARRAY_SIZE(b43_tab_noisea2));
+	BUILD_BUG_ON(B43_TAB_NOISEA3_SIZE != ARRAY_SIZE(b43_tab_noisea3));
+	BUILD_BUG_ON(B43_TAB_NOISEG1_SIZE != ARRAY_SIZE(b43_tab_noiseg1));
+	BUILD_BUG_ON(B43_TAB_NOISEG2_SIZE != ARRAY_SIZE(b43_tab_noiseg2));
+	BUILD_BUG_ON(B43_TAB_NOISESCALEG_SIZE !=
+		     ARRAY_SIZE(b43_tab_noisescaleg1));
+	BUILD_BUG_ON(B43_TAB_NOISESCALEG_SIZE !=
+		     ARRAY_SIZE(b43_tab_noisescaleg2));
+	BUILD_BUG_ON(B43_TAB_NOISESCALEG_SIZE !=
+		     ARRAY_SIZE(b43_tab_noisescaleg3));
+	BUILD_BUG_ON(B43_TAB_SIGMASQR_SIZE != ARRAY_SIZE(b43_tab_sigmasqr1));
+	BUILD_BUG_ON(B43_TAB_SIGMASQR_SIZE != ARRAY_SIZE(b43_tab_sigmasqr2));
+}
+
+u16 b43_ofdmtab_read16(struct b43_wldev *dev, u16 table, u16 offset)
+{
+	assert_sizes();
+
+	b43_phy_write(dev, B43_PHY_OTABLECTL, table + offset);
+	return b43_phy_read(dev, B43_PHY_OTABLEI);
+}
+
+void b43_ofdmtab_write16(struct b43_wldev *dev, u16 table,
+			 u16 offset, u16 value)
+{
+	b43_phy_write(dev, B43_PHY_OTABLECTL, table + offset);
+	b43_phy_write(dev, B43_PHY_OTABLEI, value);
+}
+
+u32 b43_ofdmtab_read32(struct b43_wldev *dev, u16 table, u16 offset)
+{
+	u32 ret;
+
+	b43_phy_write(dev, B43_PHY_OTABLECTL, table + offset);
+	ret = b43_phy_read(dev, B43_PHY_OTABLEQ);
+	ret <<= 16;
+	ret |= b43_phy_read(dev, B43_PHY_OTABLEI);
+
+	return ret;
+}
+
+void b43_ofdmtab_write32(struct b43_wldev *dev, u16 table,
+			 u16 offset, u32 value)
+{
+	b43_phy_write(dev, B43_PHY_OTABLECTL, table + offset);
+	b43_phy_write(dev, B43_PHY_OTABLEI, value);
+	b43_phy_write(dev, B43_PHY_OTABLEQ, (value >> 16));
+}
+
+u16 b43_gtab_read(struct b43_wldev *dev, u16 table, u16 offset)
+{
+	b43_phy_write(dev, B43_PHY_GTABCTL, table + offset);
+	return b43_phy_read(dev, B43_PHY_GTABDATA);
+}
+
+void b43_gtab_write(struct b43_wldev *dev, u16 table, u16 offset, u16 value)
+{
+	b43_phy_write(dev, B43_PHY_GTABCTL, table + offset);
+	b43_phy_write(dev, B43_PHY_GTABDATA, value);
+}

drivers/net/wireless/b43/tables.h

+#ifndef B43_TABLES_H_
+#define B43_TABLES_H_
+
+#define B43_TAB_ROTOR_SIZE		53
+extern const u32 b43_tab_rotor[];
+#define B43_TAB_RETARD_SIZE		53
+extern const u32 b43_tab_retard[];
+#define B43_TAB_FINEFREQA_SIZE	256
+extern const u16 b43_tab_finefreqa[];
+#define B43_TAB_FINEFREQG_SIZE	256
+extern const u16 b43_tab_finefreqg[];
+#define B43_TAB_NOISEA2_SIZE	8
+extern const u16 b43_tab_noisea2[];
+#define B43_TAB_NOISEA3_SIZE	8
+extern const u16 b43_tab_noisea3[];
+#define B43_TAB_NOISEG1_SIZE	8
+extern const u16 b43_tab_noiseg1[];
+#define B43_TAB_NOISEG2_SIZE	8
+extern const u16 b43_tab_noiseg2[];
+#define B43_TAB_NOISESCALEG_SIZE	27
+extern const u16 b43_tab_noisescaleg1[];
+extern const u16 b43_tab_noisescaleg2[];
+extern const u16 b43_tab_noisescaleg3[];
+#define B43_TAB_SIGMASQR_SIZE	53
+extern const u16 b43_tab_sigmasqr1[];
+extern const u16 b43_tab_sigmasqr2[];
+
+#endif /* B43_TABLES_H_ */

drivers/net/wireless/b43/xmit.c

+/*
+
+  Broadcom B43 wireless driver
+
+  Transmission (TX/RX) related functions.
+
+  Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+  Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+  Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
+  Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "xmit.h"
+#include "phy.h"
+#include "dma.h"
+#include "pio.h"
+
+/* Extract the bitrate out of a CCK PLCP header. */
+static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0]) {
+	case 0x0A:
+		return B43_CCK_RATE_1MB;
+	case 0x14:
+		return B43_CCK_RATE_2MB;
+	case 0x37:
+		return B43_CCK_RATE_5MB;
+	case 0x6E:
+		return B43_CCK_RATE_11MB;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+/* Extract the bitrate out of an OFDM PLCP header. */
+static u8 b43_plcp_get_bitrate_ofdm(struct b43_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0] & 0xF) {
+	case 0xB:
+		return B43_OFDM_RATE_6MB;
+	case 0xF:
+		return B43_OFDM_RATE_9MB;
+	case 0xA:
+		return B43_OFDM_RATE_12MB;
+	case 0xE:
+		return B43_OFDM_RATE_18MB;
+	case 0x9:
+		return B43_OFDM_RATE_24MB;
+	case 0xD:
+		return B43_OFDM_RATE_36MB;
+	case 0x8:
+		return B43_OFDM_RATE_48MB;
+	case 0xC:
+		return B43_OFDM_RATE_54MB;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_CCK_RATE_1MB:
+		return 0x0A;
+	case B43_CCK_RATE_2MB:
+		return 0x14;
+	case B43_CCK_RATE_5MB:
+		return 0x37;
+	case B43_CCK_RATE_11MB:
+		return 0x6E;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_OFDM_RATE_6MB:
+		return 0xB;
+	case B43_OFDM_RATE_9MB:
+		return 0xF;
+	case B43_OFDM_RATE_12MB:
+		return 0xA;
+	case B43_OFDM_RATE_18MB:
+		return 0xE;
+	case B43_OFDM_RATE_24MB:
+		return 0x9;
+	case B43_OFDM_RATE_36MB:
+		return 0xD;
+	case B43_OFDM_RATE_48MB:
+		return 0x8;
+	case B43_OFDM_RATE_54MB:
+		return 0xC;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
+			   const u16 octets, const u8 bitrate)
+{
+	__le32 *data = &(plcp->data);
+	__u8 *raw = plcp->raw;
+
+	if (b43_is_ofdm_rate(bitrate)) {
+		*data = b43_plcp_get_ratecode_ofdm(bitrate);
+		B43_WARN_ON(octets & 0xF000);
+		*data |= (octets << 5);
+		*data = cpu_to_le32(*data);
+	} else {
+		u32 plen;
+
+		plen = octets * 16 / bitrate;
+		if ((octets * 16 % bitrate) > 0) {
+			plen++;
+			if ((bitrate == B43_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] = b43_plcp_get_ratecode_cck(bitrate);
+	}
+}
+
+static u8 b43_calc_fallback_rate(u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_CCK_RATE_1MB:
+		return B43_CCK_RATE_1MB;
+	case B43_CCK_RATE_2MB:
+		return B43_CCK_RATE_1MB;
+	case B43_CCK_RATE_5MB:
+		return B43_CCK_RATE_2MB;
+	case B43_CCK_RATE_11MB:
+		return B43_CCK_RATE_5MB;
+	case B43_OFDM_RATE_6MB:
+		return B43_CCK_RATE_5MB;
+	case B43_OFDM_RATE_9MB:
+		return B43_OFDM_RATE_6MB;
+	case B43_OFDM_RATE_12MB:
+		return B43_OFDM_RATE_9MB;
+	case B43_OFDM_RATE_18MB:
+		return B43_OFDM_RATE_12MB;
+	case B43_OFDM_RATE_24MB:
+		return B43_OFDM_RATE_18MB;
+	case B43_OFDM_RATE_36MB:
+		return B43_OFDM_RATE_24MB;
+	case B43_OFDM_RATE_48MB:
+		return B43_OFDM_RATE_36MB;
+	case B43_OFDM_RATE_54MB:
+		return B43_OFDM_RATE_48MB;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+static void generate_txhdr_fw4(struct b43_wldev *dev,
+			       struct b43_txhdr_fw4 *txhdr,
+			       const unsigned char *fragment_data,
+			       unsigned int fragment_len,
+			       const struct ieee80211_tx_control *txctl,
+			       u16 cookie)
+{
+	const struct b43_phy *phy = &dev->phy;
+	const struct ieee80211_hdr *wlhdr =
+	    (const struct ieee80211_hdr *)fragment_data;
+	int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
+	u16 fctl = le16_to_cpu(wlhdr->frame_control);
+	u8 rate, rate_fb;
+	int rate_ofdm, rate_fb_ofdm;
+	unsigned int plcp_fragment_len;
+	u32 mac_ctl = 0;
+	u16 phy_ctl = 0;
+	u8 extra_ft = 0;
+
+	memset(txhdr, 0, sizeof(*txhdr));
+
+	rate = txctl->tx_rate;
+	rate_ofdm = b43_is_ofdm_rate(rate);
+	rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
+	rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
+
+	if (rate_ofdm)
+		txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
+	else
+		txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
+	txhdr->mac_frame_ctl = wlhdr->frame_control;
+	memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
+
+	/* Calculate duration for fallback rate */
+	if ((rate_fb == 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 {
+		int fbrate_base100kbps = B43_RATE_TO_BASE100KBPS(rate_fb);
+		txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
+								 dev->wl->if_id,
+								 fragment_len,
+								 fbrate_base100kbps);
+	}
+
+	plcp_fragment_len = fragment_len + FCS_LEN;
+	if (use_encryption) {
+		u8 key_idx = (u16) (txctl->key_idx);
+		struct b43_key *key;
+		int wlhdr_len;
+		size_t iv_len;
+
+		B43_WARN_ON(key_idx >= dev->max_nr_keys);
+		key = &(dev->key[key_idx]);
+		B43_WARN_ON(!key->keyconf);
+
+		/* Hardware appends ICV. */
+		plcp_fragment_len += txctl->icv_len;
+
+		key_idx = b43_kidx_to_fw(dev, key_idx);
+		mac_ctl |= (key_idx << B43_TX4_MAC_KEYIDX_SHIFT) &
+			   B43_TX4_MAC_KEYIDX;
+		mac_ctl |= (key->algorithm << B43_TX4_MAC_KEYALG_SHIFT) &
+			   B43_TX4_MAC_KEYALG;
+		wlhdr_len = ieee80211_get_hdrlen(fctl);
+		iv_len = min((size_t) txctl->iv_len,
+			     ARRAY_SIZE(txhdr->iv));
+		memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
+	}
+	b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp),
+			      plcp_fragment_len, rate);
+	b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
+			      plcp_fragment_len, rate_fb);
+
+	/* Extra Frame Types */
+	if (rate_fb_ofdm)
+		extra_ft |= B43_TX4_EFT_FBOFDM;
+
+	/* Set channel radio code. Note that the micrcode ORs 0x100 to
+	 * this value before comparing it to the value in SHM, if this
+	 * is a 5Ghz packet.
+	 */
+	txhdr->chan_radio_code = phy->channel;
+
+	/* PHY TX Control word */
+	if (rate_ofdm)
+		phy_ctl |= B43_TX4_PHY_OFDM;
+	if (dev->short_preamble)
+		phy_ctl |= B43_TX4_PHY_SHORTPRMBL;
+	switch (txctl->antenna_sel_tx) {
+	case 0:
+		phy_ctl |= B43_TX4_PHY_ANTLAST;
+		break;
+	case 1:
+		phy_ctl |= B43_TX4_PHY_ANT0;
+		break;
+	case 2:
+		phy_ctl |= B43_TX4_PHY_ANT1;
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+
+	/* MAC control */
+	if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
+		mac_ctl |= B43_TX4_MAC_ACK;
+	if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
+	      ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
+		mac_ctl |= B43_TX4_MAC_HWSEQ;
+	if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
+		mac_ctl |= B43_TX4_MAC_STMSDU;
+	if (phy->type == B43_PHYTYPE_A)
+		mac_ctl |= B43_TX4_MAC_5GHZ;
+
+	/* Generate the RTS or CTS-to-self frame */
+	if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
+	    (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+		unsigned int len;
+		struct ieee80211_hdr *hdr;
+		int rts_rate, rts_rate_fb;
+		int rts_rate_ofdm, rts_rate_fb_ofdm;
+
+		rts_rate = txctl->rts_cts_rate;
+		rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
+		rts_rate_fb = b43_calc_fallback_rate(rts_rate);
+		rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
+
+		if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
+			ieee80211_ctstoself_get(dev->wl->hw, dev->wl->if_id,
+						fragment_data, fragment_len,
+						txctl,
+						(struct ieee80211_cts *)(txhdr->
+									 rts_frame));
+			mac_ctl |= B43_TX4_MAC_SENDCTS;
+			len = sizeof(struct ieee80211_cts);
+		} else {
+			ieee80211_rts_get(dev->wl->hw, dev->wl->if_id,
+					  fragment_data, fragment_len, txctl,
+					  (struct ieee80211_rts *)(txhdr->
+								   rts_frame));
+			mac_ctl |= B43_TX4_MAC_SENDRTS;
+			len = sizeof(struct ieee80211_rts);
+		}
+		len += FCS_LEN;
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
+							       rts_plcp), len,
+				      rts_rate);
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
+							       rts_plcp_fb),
+				      len, rts_rate_fb);
+		hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
+		txhdr->rts_dur_fb = hdr->duration_id;
+		if (rts_rate_ofdm) {
+			extra_ft |= B43_TX4_EFT_RTSOFDM;
+			txhdr->phy_rate_rts =
+			    b43_plcp_get_ratecode_ofdm(rts_rate);
+		} else
+			txhdr->phy_rate_rts =
+			    b43_plcp_get_ratecode_cck(rts_rate);
+		if (rts_rate_fb_ofdm)
+			extra_ft |= B43_TX4_EFT_RTSFBOFDM;
+		mac_ctl |= B43_TX4_MAC_LONGFRAME;
+	}
+
+	/* 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);
+	txhdr->extra_ft = extra_ft;
+}
+
+void b43_generate_txhdr(struct b43_wldev *dev,
+			u8 * txhdr,
+			const unsigned char *fragment_data,
+			unsigned int fragment_len,
+			const struct ieee80211_tx_control *txctl, u16 cookie)
+{
+	generate_txhdr_fw4(dev, (struct b43_txhdr_fw4 *)txhdr,
+			   fragment_data, fragment_len, txctl, cookie);
+}
+
+static s8 b43_rssi_postprocess(struct b43_wldev *dev,
+			       u8 in_rssi, int ofdm,
+			       int adjust_2053, int adjust_2050)
+{
+	struct b43_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.r1.
+			    boardflags_lo & B43_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 == B43_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;
+}
+
+//TODO
+#if 0
+static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
+{
+	struct b43_phy *phy = &dev->phy;
+	s8 ret;
+
+	if (phy->type == B43_PHYTYPE_A) {
+		//TODO: Incomplete specs.
+		ret = 0;
+	} else
+		ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
+
+	return ret;
+}
+#endif
+
+void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
+{
+	struct ieee80211_rx_status status;
+	struct b43_plcp_hdr6 *plcp;
+	struct ieee80211_hdr *wlhdr;
+	const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
+	u16 fctl;
+	u16 phystat0, phystat3, chanstat, 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 = le32_to_cpu(rxhdr->mac_status);
+	mactime = le16_to_cpu(rxhdr->mac_time);
+	chanstat = le16_to_cpu(rxhdr->channel);
+
+	if (macstat & B43_RX_MAC_FCSERR)
+		dev->wl->ieee_stats.dot11FCSErrorCount++;
+	if (macstat & B43_RX_MAC_DECERR) {
+		/* Decryption with the given key failed.
+		 * Drop the packet. We also won't be able to decrypt it with
+		 * the key in software. */
+		goto drop;
+	}
+
+	/* Skip PLCP and padding */
+	padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
+	if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
+		b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
+		goto drop;
+	}
+	plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
+	skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
+	/* The skb contains the Wireless Header + payload data now */
+	if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */  + FCS_LEN))) {
+		b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
+		goto drop;
+	}
+	wlhdr = (struct ieee80211_hdr *)(skb->data);
+	fctl = le16_to_cpu(wlhdr->frame_control);
+	skb_trim(skb, skb->len - FCS_LEN);
+
+	if (macstat & B43_RX_MAC_DEC) {
+		unsigned int keyidx;
+		int wlhdr_len;
+
+		keyidx = ((macstat & B43_RX_MAC_KEYIDX)
+			  >> B43_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 = b43_kidx_to_raw(dev, keyidx);
+		B43_WARN_ON(keyidx >= dev->max_nr_keys);
+
+		if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
+			wlhdr_len = ieee80211_get_hdrlen(fctl);
+			if (unlikely(skb->len < (wlhdr_len + 3))) {
+				b43dbg(dev->wl,
+				       "RX: Packet size underrun (3)\n");
+				goto drop;
+			}
+			status.flag |= RX_FLAG_DECRYPTED;
+		}
+	}
+
+	status.ssi = b43_rssi_postprocess(dev, jssi,
+					  (phystat0 & B43_RX_PHYST0_OFDM),
+					  (phystat0 & B43_RX_PHYST0_GAINCTL),
+					  (phystat3 & B43_RX_PHYST3_TRSTATE));
+	status.noise = dev->stats.link_noise;
+	/* the next line looks wrong, but is what mac80211 wants */
+	status.signal = (jssi * 100) / B43_RX_MAX_SSI;
+	if (phystat0 & B43_RX_PHYST0_OFDM)
+		status.rate = b43_plcp_get_bitrate_ofdm(plcp);
+	else
+		status.rate = b43_plcp_get_bitrate_cck(plcp);
+	status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
+	status.mactime = mactime;
+
+	chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
+	switch (chanstat & B43_RX_CHAN_PHYTYPE) {
+	case B43_PHYTYPE_A:
+		status.phymode = MODE_IEEE80211A;
+		status.freq = chanid;
+		status.channel = b43_freq_to_channel_a(chanid);
+		break;
+	case B43_PHYTYPE_B:
+		status.phymode = MODE_IEEE80211B;
+		status.freq = chanid + 2400;
+		status.channel = b43_freq_to_channel_bg(chanid + 2400);
+		break;
+	case B43_PHYTYPE_G:
+		status.phymode = MODE_IEEE80211G;
+		status.freq = chanid + 2400;
+		status.channel = b43_freq_to_channel_bg(chanid + 2400);
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+
+	dev->stats.last_rx = jiffies;
+	ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
+
+	return;
+drop:
+	b43dbg(dev->wl, "RX: Packet dropped\n");
+	dev_kfree_skb_any(skb);
+}
+
+void b43_handle_txstatus(struct b43_wldev *dev,
+			 const struct b43_txstatus *status)
+{
+	b43_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 (b43_using_pio(dev))
+		b43_pio_handle_txstatus(dev, status);
+	else
+		b43_dma_handle_txstatus(dev, status);
+}
+
+/* Handle TX status report as received through DMA/PIO queues */
+void b43_handle_hwtxstatus(struct b43_wldev *dev,
+			   const struct b43_hwtxstatus *hw)
+{
+	struct b43_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;
+	status.supp_reason = ((tmp & 0x1C) >> 2);
+	status.pm_indicated = !!(tmp & 0x80);
+	status.intermediate = !!(tmp & 0x40);
+	status.for_ampdu = !!(tmp & 0x20);
+	status.acked = !!(tmp & 0x02);
+
+	b43_handle_txstatus(dev, &status);
+}
+
+/* Stop any TX operation on the device (suspend the hardware queues) */
+void b43_tx_suspend(struct b43_wldev *dev)
+{
+	if (b43_using_pio(dev))
+		b43_pio_freeze_txqueues(dev);
+	else
+		b43_dma_tx_suspend(dev);
+}
+
+/* Resume any TX operation on the device (resume the hardware queues) */
+void b43_tx_resume(struct b43_wldev *dev)
+{
+	if (b43_using_pio(dev))
+		b43_pio_thaw_txqueues(dev);
+	else
+		b43_dma_tx_resume(dev);
+}
+
+#if 0
+static void upload_qos_parms(struct b43_wldev *dev,
+			     const u16 * parms, u16 offset)
+{
+	int i;
+
+	for (i = 0; i < B43_NR_QOSPARMS; i++) {
+		b43_shm_write16(dev, B43_SHM_SHARED,
+				offset + (i * 2), parms[i]);
+	}
+}
+#endif
+
+/* Initialize the QoS parameters */
+void b43_qos_init(struct b43_wldev *dev)
+{
+	/* FIXME: This function must probably be called from the mac80211
+	 * config callback. */
+	return;
+
+	b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
+	//FIXME kill magic
+	b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4);
+
+	/*TODO: We might need some stack support here to get the values. */
+}

drivers/net/wireless/b43/xmit.h

+#ifndef B43_XMIT_H_
+#define B43_XMIT_H_
+
+#include "main.h"
+
+#define _b43_declare_plcp_hdr(size) \
+	struct b43_plcp_hdr##size {		\
+		union {				\
+			__le32 data;		\
+			__u8 raw[size];		\
+		} __attribute__((__packed__));	\
+	} __attribute__((__packed__))
+
+/* struct b43_plcp_hdr4 */
+_b43_declare_plcp_hdr(4);
+/* struct b43_plcp_hdr6 */
+_b43_declare_plcp_hdr(6);
+
+#undef _b43_declare_plcp_hdr
+
+/* TX header for v4 firmware */
+struct b43_txhdr_fw4 {
+	__le32 mac_ctl;		/* MAC TX control */
+	__le16 mac_frame_ctl;	/* Copy of the FrameControl field */
+	__le16 tx_fes_time_norm;	/* TX FES Time Normal */
+	__le16 phy_ctl;		/* PHY TX control */
+	__le16 phy_ctl_0;	/* Unused */
+	__le16 phy_ctl_1;	/* Unused */
+	__le16 phy_ctl_rts_0;	/* Unused */
+	__le16 phy_ctl_rts_1;	/* Unused */
+	__u8 phy_rate;		/* PHY rate */
+	__u8 phy_rate_rts;	/* PHY rate for RTS/CTS */
+	__u8 extra_ft;		/* Extra Frame Types */
+	__u8 chan_radio_code;	/* Channel Radio Code */
+	__u8 iv[16];		/* Encryption IV */
+	__u8 tx_receiver[6];	/* TX Frame Receiver address */
+	__le16 tx_fes_time_fb;	/* TX FES Time Fallback */
+	struct b43_plcp_hdr6 rts_plcp_fb;	/* RTS fallback PLCP */
+	__le16 rts_dur_fb;	/* RTS fallback duration */
+	struct b43_plcp_hdr6 plcp_fb;	/* Fallback PLCP */
+	__le16 dur_fb;		/* Fallback duration */
+	__le16 mm_dur_time;	/* Unused */
+	__le16 mm_dur_time_fb;	/* Unused */
+	__le32 time_stamp;	/* Timestamp */
+	 PAD_BYTES(2);
+	__le16 cookie;		/* TX frame cookie */
+	__le16 tx_status;	/* TX status */
+	struct b43_plcp_hdr6 rts_plcp;	/* RTS PLCP */
+	__u8 rts_frame[16];	/* The RTS frame (if used) */
+	 PAD_BYTES(2);
+	struct b43_plcp_hdr6 plcp;	/* Main PLCP */
+} __attribute__ ((__packed__));
+
+/* MAC TX control */
+#define B43_TX4_MAC_KEYIDX		0x0FF00000	/* Security key index */
+#define B43_TX4_MAC_KEYIDX_SHIFT	20
+#define B43_TX4_MAC_KEYALG		0x00070000	/* Security key algorithm */
+#define B43_TX4_MAC_KEYALG_SHIFT	16
+#define B43_TX4_MAC_LIFETIME	0x00001000
+#define B43_TX4_MAC_FRAMEBURST	0x00000800
+#define B43_TX4_MAC_SENDCTS		0x00000400
+#define B43_TX4_MAC_AMPDU		0x00000300
+#define B43_TX4_MAC_AMPDU_SHIFT	8
+#define B43_TX4_MAC_5GHZ		0x00000080
+#define B43_TX4_MAC_IGNPMQ		0x00000020
+#define B43_TX4_MAC_HWSEQ		0x00000010	/* Use Hardware Sequence Number */
+#define B43_TX4_MAC_STMSDU		0x00000008	/* Start MSDU */
+#define B43_TX4_MAC_SENDRTS		0x00000004
+#define B43_TX4_MAC_LONGFRAME	0x00000002
+#define B43_TX4_MAC_ACK		0x00000001
+
+/* Extra Frame Types */
+#define B43_TX4_EFT_FBOFDM		0x0001	/* Data frame fallback rate type */
+#define B43_TX4_EFT_RTSOFDM		0x0004	/* RTS/CTS rate type */
+#define B43_TX4_EFT_RTSFBOFDM	0x0010	/* RTS/CTS fallback rate type */
+
+/* PHY TX control word */
+#define B43_TX4_PHY_OFDM		0x0001	/* Data frame rate type */
+#define B43_TX4_PHY_SHORTPRMBL	0x0010	/* Use short preamble */
+#define B43_TX4_PHY_ANT		0x03C0	/* Antenna selection */
+#define  B43_TX4_PHY_ANT0		0x0000	/* Use antenna 0 */
+#define  B43_TX4_PHY_ANT1		0x0100	/* Use antenna 1 */
+#define  B43_TX4_PHY_ANTLAST	0x0300	/* Use last used antenna */
+
+void b43_generate_txhdr(struct b43_wldev *dev,
+			u8 * txhdr,
+			const unsigned char *fragment_data,
+			unsigned int fragment_len,
+			const struct ieee80211_tx_control *txctl, u16 cookie);
+
+/* Transmit Status */
+struct b43_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 (not final) */
+	u8 for_ampdu;		/* Status is for an AMPDU (afterburner) */
+	u8 acked;		/* Wireless ACK received */
+};
+
+/* txstatus supp_reason values */
+enum {
+	B43_TXST_SUPP_NONE,	/* Not suppressed */
+	B43_TXST_SUPP_PMQ,	/* Suppressed due to PMQ entry */
+	B43_TXST_SUPP_FLUSH,	/* Suppressed due to flush request */
+	B43_TXST_SUPP_PREV,	/* Previous fragment failed */
+	B43_TXST_SUPP_CHAN,	/* Channel mismatch */
+	B43_TXST_SUPP_LIFE,	/* Lifetime expired */
+	B43_TXST_SUPP_UNDER,	/* Buffer underflow */
+	B43_TXST_SUPP_ABNACK,	/* Afterburner NACK */
+};
+
+/* Transmit Status as received through DMA/PIO on old chips */
+struct b43_hwtxstatus {
+	PAD_BYTES(4);
+	__le16 cookie;
+	u8 flags;
+	u8 count;
+	 PAD_BYTES(2);
+	__le16 seq;
+	u8 phy_stat;
+	 PAD_BYTES(1);
+} __attribute__ ((__packed__));
+
+/* Receive header for v4 firmware. */
+struct b43_rxhdr_fw4 {
+	__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 */
+	__le16 phy_status2;	/* PHY RX Status 2 */
+	__le16 phy_status3;	/* PHY RX Status 3 */
+	__le32 mac_status;	/* MAC RX status */
+	__le16 mac_time;
+	__le16 channel;
+} __attribute__ ((__packed__));
+
+/* PHY RX Status 0 */
+#define B43_RX_PHYST0_GAINCTL	0x4000	/* Gain Control */
+#define B43_RX_PHYST0_PLCPHCF	0x0200
+#define B43_RX_PHYST0_PLCPFV	0x0100
+#define B43_RX_PHYST0_SHORTPRMBL	0x0080	/* Received with Short Preamble */
+#define B43_RX_PHYST0_LCRS		0x0040
+#define B43_RX_PHYST0_ANT		0x0020	/* Antenna */
+#define B43_RX_PHYST0_UNSRATE	0x0010
+#define B43_RX_PHYST0_CLIP		0x000C
+#define B43_RX_PHYST0_CLIP_SHIFT	2
+#define B43_RX_PHYST0_FTYPE		0x0003	/* Frame type */
+#define  B43_RX_PHYST0_CCK		0x0000	/* Frame type: CCK */
+#define  B43_RX_PHYST0_OFDM		0x0001	/* Frame type: OFDM */
+#define  B43_RX_PHYST0_PRE_N	0x0002	/* Pre-standard N-PHY frame */
+#define  B43_RX_PHYST0_STD_N	0x0003	/* Standard N-PHY frame */
+
+/* PHY RX Status 2 */
+#define B43_RX_PHYST2_LNAG		0xC000	/* LNA Gain */
+#define B43_RX_PHYST2_LNAG_SHIFT	14
+#define B43_RX_PHYST2_PNAG		0x3C00	/* PNA Gain */
+#define B43_RX_PHYST2_PNAG_SHIFT	10
+#define B43_RX_PHYST2_FOFF		0x03FF	/* F offset */
+
+/* PHY RX Status 3 */
+#define B43_RX_PHYST3_DIGG		0x1800	/* DIG Gain */
+#define B43_RX_PHYST3_DIGG_SHIFT	11
+#define B43_RX_PHYST3_TRSTATE	0x0400	/* TR state */
+
+/* MAC RX Status */
+#define B43_RX_MAC_BEACONSENT	0x00008000	/* Beacon send flag */
+#define B43_RX_MAC_KEYIDX		0x000007E0	/* Key index */
+#define B43_RX_MAC_KEYIDX_SHIFT	5
+#define B43_RX_MAC_DECERR		0x00000010	/* Decrypt error */
+#define B43_RX_MAC_DEC		0x00000008	/* Decryption attempted */
+#define B43_RX_MAC_PADDING		0x00000004	/* Pad bytes present */
+#define B43_RX_MAC_RESP		0x00000002	/* Response frame transmitted */
+#define B43_RX_MAC_FCSERR		0x00000001	/* FCS error */
+
+/* RX channel */
+#define B43_RX_CHAN_GAIN		0xFC00	/* Gain */
+#define B43_RX_CHAN_GAIN_SHIFT	10
+#define B43_RX_CHAN_ID		0x03FC	/* Channel ID */
+#define B43_RX_CHAN_ID_SHIFT	2
+#define B43_RX_CHAN_PHYTYPE		0x0003	/* PHY type */
+
+u8 b43_plcp_get_ratecode_cck(const u8 bitrate);
+u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate);
+
+void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
+			   const u16 octets, const u8 bitrate);
+
+void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr);
+
+void b43_handle_txstatus(struct b43_wldev *dev,
+			 const struct b43_txstatus *status);
+
+void b43_handle_hwtxstatus(struct b43_wldev *dev,
+			   const struct b43_hwtxstatus *hw);
+
+void b43_tx_suspend(struct b43_wldev *dev);
+void b43_tx_resume(struct b43_wldev *dev);
+
+#define B43_NR_QOSPARMS		22
+enum {
+	B43_QOSPARM_TXOP = 0,
+	B43_QOSPARM_CWMIN,
+	B43_QOSPARM_CWMAX,
+	B43_QOSPARM_CWCUR,
+	B43_QOSPARM_AIFS,
+	B43_QOSPARM_BSLOTS,
+	B43_QOSPARM_REGGAP,
+	B43_QOSPARM_STATUS,
+};
+void b43_qos_init(struct b43_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 b43_new_kidx_api(struct b43_wldev *dev)
+{
+	/* FIXME: Not sure the change was at rev 351 */
+	return (dev->fw.rev >= 351);
+}
+static inline u8 b43_kidx_to_fw(struct b43_wldev *dev, u8 raw_kidx)
+{
+	u8 firmware_kidx;
+	if (b43_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 b43_kidx_to_raw(struct b43_wldev *dev, u8 firmware_kidx)
+{
+	u8 raw_kidx;
+	if (b43_new_kidx_api(dev))
+		raw_kidx = firmware_kidx;
+	else
+		raw_kidx = firmware_kidx + 4;	/* RX default keys or per STA keys */
+	return raw_kidx;
+}
+
+#endif /* B43_XMIT_H_ */