b43: add bus device abstraction layer

[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / 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 "rfkill.h"
#include "bus.h"
#include "lo.h"
#include "phy_common.h"


/* The unique identifier of the firmware that's officially supported by
 * this driver version. */
#define B43_SUPPORTED_FIRMWARE_ID       "FW13"


#ifdef CONFIG_B43_DEBUG
# define B43_DEBUG      1
#else
# define B43_DEBUG      0
#endif

/* 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   /* MAC control */
#define B43_MMIO_MACCMD                 0x124   /* MAC command */
#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 */
#define B43_MMIO_TSF_CFP_REP            0x188
#define B43_MMIO_TSF_CFP_START          0x18C
#define B43_MMIO_TSF_CFP_MAXDUR         0x190

/* 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 on core rev < 11 */
#define B43_MMIO_PIO_BASE0              0x300
#define B43_MMIO_PIO_BASE1              0x310
#define B43_MMIO_PIO_BASE2              0x320
#define B43_MMIO_PIO_BASE3              0x330
#define B43_MMIO_PIO_BASE4              0x340
#define B43_MMIO_PIO_BASE5              0x350
#define B43_MMIO_PIO_BASE6              0x360
#define B43_MMIO_PIO_BASE7              0x370
/* PIO on core rev >= 11 */
#define B43_MMIO_PIO11_BASE0            0x200
#define B43_MMIO_PIO11_BASE1            0x240
#define B43_MMIO_PIO11_BASE2            0x280
#define B43_MMIO_PIO11_BASE3            0x2C0
#define B43_MMIO_PIO11_BASE4            0x300
#define B43_MMIO_PIO11_BASE5            0x340

#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_PSM_PHY_HDR            0x492
#define B43_MMIO_RADIO_HWENABLED_LO     0x49A
#define B43_MMIO_GPIO_CONTROL           0x49C
#define B43_MMIO_GPIO_MASK              0x49E
#define B43_MMIO_TSF_CFP_START_LOW      0x604
#define B43_MMIO_TSF_CFP_START_HIGH     0x606
#define B43_MMIO_TSF_CFP_PRETBTT        0x612
#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_IFSSLOT                0x684   /* Interframe slot time */
#define B43_MMIO_IFSCTL                 0x688 /* Interframe space control */
#define  B43_MMIO_IFSCTL_USE_EDCF       0x0004
#define B43_MMIO_POWERUP_DELAY          0x6A8
#define B43_MMIO_BTCOEX_CTL             0x6B4 /* Bluetooth Coexistence Control */
#define B43_MMIO_BTCOEX_STAT            0x6B6 /* Bluetooth Coexistence Status */
#define B43_MMIO_BTCOEX_TXCTL           0x6B8 /* Bluetooth Coexistence Transmit Control */

/* 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 */

/* SPROM boardflags_hi values */
#define B43_BFH_NOPA                    0x0001  /* has no PA */
#define B43_BFH_RSSIINV                 0x0002  /* RSSI uses positive slope (not TSSI) */
#define B43_BFH_PAREF                   0x0004  /* uses the PARef LDO */
#define B43_BFH_3TSWITCH                0x0008  /* uses a triple throw switch shared
                                                 * with bluetooth */
#define B43_BFH_PHASESHIFT              0x0010  /* can support phase shifter */
#define B43_BFH_BUCKBOOST               0x0020  /* has buck/booster */
#define B43_BFH_FEM_BT                  0x0040  /* has FEM and switch to share antenna
                                                 * with bluetooth */

/* SPROM boardflags2_lo values */
#define B43_BFL2_RXBB_INT_REG_DIS       0x0001  /* external RX BB regulator present */
#define B43_BFL2_APLL_WAR               0x0002  /* alternative A-band PLL settings implemented */
#define B43_BFL2_TXPWRCTRL_EN           0x0004  /* permits enabling TX Power Control */
#define B43_BFL2_2X4_DIV                0x0008  /* 2x4 diversity switch */
#define B43_BFL2_5G_PWRGAIN             0x0010  /* supports 5G band power gain */
#define B43_BFL2_PCIEWAR_OVR            0x0020  /* overrides ASPM and Clkreq settings */
#define B43_BFL2_CAESERS_BRD            0x0040  /* is Caesers board (unused) */
#define B43_BFL2_BTC3WIRE               0x0080  /* used 3-wire bluetooth coexist */
#define B43_BFL2_SKWRKFEM_BRD           0x0100  /* 4321mcm93 uses Skyworks FEM */
#define B43_BFL2_SPUR_WAR               0x0200  /* has a workaround for clock-harmonic spurs */
#define B43_BFL2_GPLL_WAR               0x0400  /* altenative G-band PLL settings implemented */

/* 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_FWCAPA               0x0042  /* Firmware capabilities (Opensource firmware 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_HOSTFMI              0x0060  /* Hostflags for ucode options (middle) */
#define B43_SHM_SH_HOSTFHI              0x0062  /* 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 5 Ghz channel */
#define  B43_SHM_SH_CHAN_40MHZ          0x0200  /* Bit set, if 40 Mhz channel width */
#define B43_SHM_SH_BCMCFIFOID           0x0108  /* Last posted cookie to the bcast/mcast FIFO */
/* TSSI information */
#define B43_SHM_SH_TSSI_CCK             0x0058  /* TSSI for last 4 CCK frames (32bit) */
#define B43_SHM_SH_TSSI_OFDM_A          0x0068  /* TSSI for last 4 OFDM frames (32bit) */
#define B43_SHM_SH_TSSI_OFDM_G          0x0070  /* TSSI for last 4 OFDM frames (32bit) */
#define  B43_TSSI_MAX                   0x7F    /* Max value for one TSSI value */
/* 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/AP 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_DTIMP                0x0012  /* DTIP period */
#define B43_SHM_SH_MCASTCOOKIE          0x00A8  /* Last bcast/mcast frame ID */
#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) */
#define B43_SHM_SH_EXTNPHYCTL           0x00B0  /* Extended bytes for beacon PHY control (N) */
/* 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_SHARED tx iq workarounds */
#define B43_SHM_SH_NPHY_TXIQW0          0x0700
#define B43_SHM_SH_NPHY_TXIQW1          0x0702
#define B43_SHM_SH_NPHY_TXIQW2          0x0704
#define B43_SHM_SH_NPHY_TXIQW3          0x0706
/* SHM_SHARED tx pwr ctrl */
#define B43_SHM_SH_NPHY_TXPWR_INDX0     0x0708
#define B43_SHM_SH_NPHY_TXPWR_INDX1     0x070E

/* 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       0x000000000001ULL /* ucode antenna div helper */
#define B43_HF_SYMW             0x000000000002ULL /* G-PHY SYM workaround */
#define B43_HF_RXPULLW          0x000000000004ULL /* RX pullup workaround */
#define B43_HF_CCKBOOST         0x000000000008ULL /* 4dB CCK power boost (exclusive with OFDM boost) */
#define B43_HF_BTCOEX           0x000000000010ULL /* Bluetooth coexistance */
#define B43_HF_GDCW             0x000000000020ULL /* G-PHY DC canceller filter bw workaround */
#define B43_HF_OFDMPABOOST      0x000000000040ULL /* Enable PA gain boost for OFDM */
#define B43_HF_ACPR             0x000000000080ULL /* Disable for Japan, channel 14 */
#define B43_HF_EDCF             0x000000000100ULL /* on if WME and MAC suspended */
#define B43_HF_TSSIRPSMW        0x000000000200ULL /* TSSI reset PSM ucode workaround */
#define B43_HF_20IN40IQW        0x000000000200ULL /* 20 in 40 MHz I/Q workaround (rev >= 13 only) */
#define B43_HF_DSCRQ            0x000000000400ULL /* Disable slow clock request in ucode */
#define B43_HF_ACIW             0x000000000800ULL /* ACI workaround: shift bits by 2 on PHY CRS */
#define B43_HF_2060W            0x000000001000ULL /* 2060 radio workaround */
#define B43_HF_RADARW           0x000000002000ULL /* Radar workaround */
#define B43_HF_USEDEFKEYS       0x000000004000ULL /* Enable use of default keys */
#define B43_HF_AFTERBURNER      0x000000008000ULL /* Afterburner enabled */
#define B43_HF_BT4PRIOCOEX      0x000000010000ULL /* Bluetooth 4-priority coexistance */
#define B43_HF_FWKUP            0x000000020000ULL /* Fast wake-up ucode */
#define B43_HF_VCORECALC        0x000000040000ULL /* Force VCO recalculation when powering up synthpu */
#define B43_HF_PCISCW           0x000000080000ULL /* PCI slow clock workaround */
#define B43_HF_4318TSSI         0x000000200000ULL /* 4318 TSSI */
#define B43_HF_FBCMCFIFO        0x000000400000ULL /* Flush bcast/mcast FIFO immediately */
#define B43_HF_HWPCTL           0x000000800000ULL /* Enable hardwarre power control */
#define B43_HF_BTCOEXALT        0x000001000000ULL /* Bluetooth coexistance in alternate pins */
#define B43_HF_TXBTCHECK        0x000002000000ULL /* Bluetooth check during transmission */
#define B43_HF_SKCFPUP          0x000004000000ULL /* Skip CFP update */
#define B43_HF_N40W             0x000008000000ULL /* N PHY 40 MHz workaround (rev >= 13 only) */
#define B43_HF_ANTSEL           0x000020000000ULL /* Antenna selection (for testing antenna div.) */
#define B43_HF_BT3COEXT         0x000020000000ULL /* Bluetooth 3-wire coexistence (rev >= 13 only) */
#define B43_HF_BTCANT           0x000040000000ULL /* Bluetooth coexistence (antenna mode) (rev >= 13 only) */
#define B43_HF_ANTSELEN         0x000100000000ULL /* Antenna selection enabled (rev >= 13 only) */
#define B43_HF_ANTSELMODE       0x000200000000ULL /* Antenna selection mode (rev >= 13 only) */
#define B43_HF_MLADVW           0x001000000000ULL /* N PHY ML ADV workaround (rev >= 13 only) */
#define B43_HF_PR45960W         0x080000000000ULL /* PR 45960 workaround (rev >= 13 only) */

/* Firmware capabilities field in SHM (Opensource firmware only) */
#define B43_FWCAPA_HWCRYPTO     0x0001
#define B43_FWCAPA_QOS          0x0002

/* 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
#define B43_PHYTYPE_N                   0x04
#define B43_PHYTYPE_LP                  0x05

/* 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 */

/* MAC Command bitfield */
#define B43_MACCMD_BEACON0_VALID        0x00000001      /* Beacon 0 in template RAM is busy/valid */
#define B43_MACCMD_BEACON1_VALID        0x00000002      /* Beacon 1 in template RAM is busy/valid */
#define B43_MACCMD_DFQ_VALID            0x00000004      /* Directed frame queue valid (IBSS PS mode, ATIM) */
#define B43_MACCMD_CCA                  0x00000008      /* Clear channel assessment */
#define B43_MACCMD_BGNOISE              0x00000010      /* Background noise */

/* 802.11 core specific TM State Low (SSB_TMSLOW) flags */
#define B43_TMSLOW_GMODE                0x20000000      /* G Mode Enable */
#define B43_TMSLOW_PHY_BANDWIDTH        0x00C00000      /* PHY band width and clock speed mask (N-PHY only) */
#define  B43_TMSLOW_PHY_BANDWIDTH_10MHZ 0x00000000      /* 10 MHz bandwidth, 40 MHz PHY */
#define  B43_TMSLOW_PHY_BANDWIDTH_20MHZ 0x00400000      /* 20 MHz bandwidth, 80 MHz PHY */
#define  B43_TMSLOW_PHY_BANDWIDTH_40MHZ 0x00800000      /* 40 MHz bandwidth, 160 MHz PHY */
#define B43_TMSLOW_PLLREFSEL            0x00200000      /* PLL Frequency Reference Select (rev >= 5) */
#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 (SSB_TMSHIGH) flags */
#define B43_TMSHIGH_DUALBAND_PHY        0x00080000      /* Dualband PHY available */
#define B43_TMSHIGH_FCLOCK              0x00040000      /* Fast Clock Available (rev >= 5) */
#define B43_TMSHIGH_HAVE_5GHZ_PHY       0x00020000      /* 5 GHz PHY available (rev >= 5) */
#define B43_TMSHIGH_HAVE_2GHZ_PHY       0x00010000      /* 2.4 GHz 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_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)

/* The firmware register to fetch the debug-IRQ reason from. */
#define B43_DEBUGIRQ_REASON_REG         63
/* Debug-IRQ reasons. */
#define B43_DEBUGIRQ_PANIC              0       /* The firmware panic'ed */
#define B43_DEBUGIRQ_DUMP_SHM           1       /* Dump shared SHM */
#define B43_DEBUGIRQ_DUMP_REGS          2       /* Dump the microcode registers */
#define B43_DEBUGIRQ_MARKER             3       /* A "marker" was thrown by the firmware. */
#define B43_DEBUGIRQ_ACK                0xFFFF  /* The host writes that to ACK the IRQ */

/* The firmware register that contains the "marker" line. */
#define B43_MARKER_ID_REG               2
#define B43_MARKER_LINE_REG             3

/* The firmware register to fetch the panic reason from. */
#define B43_FWPANIC_REASON_REG          3
/* Firmware panic reason codes */
#define B43_FWPANIC_DIE                 0 /* Firmware died. Don't auto-restart it. */
#define B43_FWPANIC_RESTART             1 /* Firmware died. Schedule a controller reset. */

/* The firmware register that contains the watchdog counter. */
#define B43_WATCHDOG_REG                1

/* 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

#define B43_PHY_TX_BADNESS_LIMIT        1000

/* Max size of a security key */
#define B43_SEC_KEYSIZE                 16
/* Max number of group keys */
#define B43_NR_GROUP_KEYS               4
/* Max number of pairwise keys */
#define B43_NR_PAIRWISE_KEYS            50
/* 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;

/* 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;
} __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 __packed;
} __packed;


/* Data structures for DMA transmission, per 80211 core. */
struct b43_dma {
        struct b43_dmaring *tx_ring_AC_BK; /* Background */
        struct b43_dmaring *tx_ring_AC_BE; /* Best Effort */
        struct b43_dmaring *tx_ring_AC_VI; /* Video */
        struct b43_dmaring *tx_ring_AC_VO; /* Voice */
        struct b43_dmaring *tx_ring_mcast; /* Multicast */

        struct b43_dmaring *rx_ring;

        u32 translation; /* Routing bits */
};

struct b43_pio_txqueue;
struct b43_pio_rxqueue;

/* Data structures for PIO transmission, per 80211 core. */
struct b43_pio {
        struct b43_pio_txqueue *tx_queue_AC_BK; /* Background */
        struct b43_pio_txqueue *tx_queue_AC_BE; /* Best Effort */
        struct b43_pio_txqueue *tx_queue_AC_VI; /* Video */
        struct b43_pio_txqueue *tx_queue_AC_VO; /* Voice */
        struct b43_pio_txqueue *tx_queue_mcast; /* Multicast */

        struct b43_pio_rxqueue *rx_queue;
};

/* Context information for a noise calculation (Link Quality). */
struct b43_noise_calculation {
        bool calculation_running;
        u8 nr_samples;
        s8 samples[8][4];
};

struct b43_stats {
        u8 link_noise;
};

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;
};

/* SHM offsets to the QOS data structures for the 4 different queues. */
#define B43_QOS_PARAMS(queue)   (B43_SHM_SH_EDCFQ + \
                                 (B43_NR_QOSPARAMS * sizeof(u16) * (queue)))
#define B43_QOS_BACKGROUND      B43_QOS_PARAMS(0)
#define B43_QOS_BESTEFFORT      B43_QOS_PARAMS(1)
#define B43_QOS_VIDEO           B43_QOS_PARAMS(2)
#define B43_QOS_VOICE           B43_QOS_PARAMS(3)

/* QOS parameter hardware data structure offsets. */
#define B43_NR_QOSPARAMS        16
enum {
        B43_QOSPARAM_TXOP = 0,
        B43_QOSPARAM_CWMIN,
        B43_QOSPARAM_CWMAX,
        B43_QOSPARAM_CWCUR,
        B43_QOSPARAM_AIFS,
        B43_QOSPARAM_BSLOTS,
        B43_QOSPARAM_REGGAP,
        B43_QOSPARAM_STATUS,
};

/* QOS parameters for a queue. */
struct b43_qos_params {
        /* The QOS parameters */
        struct ieee80211_tx_queue_params p;
};

struct b43_wl;

/* The type of the firmware file. */
enum b43_firmware_file_type {
        B43_FWTYPE_PROPRIETARY,
        B43_FWTYPE_OPENSOURCE,
        B43_NR_FWTYPES,
};

/* Context data for fetching firmware. */
struct b43_request_fw_context {
        /* The device we are requesting the fw for. */
        struct b43_wldev *dev;
        /* The type of firmware to request. */
        enum b43_firmware_file_type req_type;
        /* Error messages for each firmware type. */
        char errors[B43_NR_FWTYPES][128];
        /* Temporary buffer for storing the firmware name. */
        char fwname[64];
        /* A fatal error occurred while requesting. Firmware request
         * can not continue, as any other request will also fail. */
        int fatal_failure;
};

/* In-memory representation of a cached microcode file. */
struct b43_firmware_file {
        const char *filename;
        const struct firmware *data;
        /* Type of the firmware file name. Note that this does only indicate
         * the type by the firmware name. NOT the file contents.
         * If you want to check for proprietary vs opensource, use (struct b43_firmware)->opensource
         * instead! The (struct b43_firmware)->opensource flag is derived from the actual firmware
         * binary code, not just the filename.
         */
        enum b43_firmware_file_type type;
};

/* Pointers to the firmware data and meta information about it. */
struct b43_firmware {
        /* Microcode */
        struct b43_firmware_file ucode;
        /* PCM code */
        struct b43_firmware_file pcm;
        /* Initial MMIO values for the firmware */
        struct b43_firmware_file initvals;
        /* Initial MMIO values for the firmware, band-specific */
        struct b43_firmware_file initvals_band;

        /* Firmware revision */
        u16 rev;
        /* Firmware patchlevel */
        u16 patch;

        /* Set to true, if we are using an opensource firmware.
         * Use this to check for proprietary vs opensource. */
        bool opensource;
        /* Set to true, if the core needs a PCM firmware, but
         * we failed to load one. This is always false for
         * core rev > 10, as these don't need PCM firmware. */
        bool pcm_request_failed;
};

/* 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)

/* Data structure for one wireless device (802.11 core) */
struct b43_wldev {
        struct ssb_device *sdev; /* TODO: remove when b43_bus_dev is ready */
        struct b43_bus_dev *dev;
        struct b43_wl *wl;

        /* The device initialization status.
         * Use b43_status() to query. */
        atomic_t __init_status;

        bool bad_frames_preempt;        /* Use "Bad Frames Preemption" (default off) */
        bool dfq_valid;         /* Directed frame queue valid (IBSS PS mode, ATIM) */
        bool radio_hw_enable;   /* saved state of radio hardware enabled state */
        bool qos_enabled;               /* TRUE, if QoS is used. */
        bool hwcrypto_enabled;          /* TRUE, if HW crypto acceleration is enabled. */
        bool use_pio;                   /* TRUE if next init should use PIO */

        /* PHY/Radio device. */
        struct b43_phy phy;

        union {
                /* DMA engines. */
                struct b43_dma dma;
                /* PIO engines. */
                struct b43_pio pio;
        };
        /* Use b43_using_pio_transfers() to check whether we are using
         * DMA or PIO data transfers. */
        bool __using_pio_transfers;

        /* Various statistics about the physical device. */
        struct b43_stats stats;

        /* Reason code of the last interrupt. */
        u32 irq_reason;
        u32 dma_reason[6];
        /* The currently active generic-interrupt mask. */
        u32 irq_mask;

        /* Link Quality calculation context. */
        struct b43_noise_calculation noisecalc;
        /* if > 0 MAC is suspended. if == 0 MAC is enabled. */
        int mac_suspended;

        /* Periodic tasks */
        struct delayed_work periodic_work;
        unsigned int periodic_state;

        struct work_struct restart_work;

        /* encryption/decryption */
        u16 ktp;                /* Key table pointer */
        struct b43_key key[B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS];

        /* 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;
        unsigned int irq_count;
        unsigned int irq_bit_count[32];
        unsigned int tx_count;
        unsigned int rx_count;
#endif
};

/* 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;

        /* Global driver mutex. Every operation must run with this mutex locked. */
        struct mutex mutex;
        /* Hard-IRQ spinlock. This lock protects things used in the hard-IRQ
         * handler, only. This basically is just the IRQ mask register. */
        spinlock_t hardirq_lock;

        /* The number of queues that were registered with the mac80211 subsystem
         * initially. This is a backup copy of hw->queues in case hw->queues has
         * to be dynamically lowered at runtime (Firmware does not support QoS).
         * hw->queues has to be restored to the original value before unregistering
         * from the mac80211 subsystem. */
        u16 mac80211_initially_registered_queues;

        /* We can only have one operating interface (802.11 core)
         * at a time. General information about this interface follows.
         */

        struct ieee80211_vif *vif;
        /* The MAC address of the operating interface. */
        u8 mac_addr[ETH_ALEN];
        /* Current BSSID */
        u8 bssid[ETH_ALEN];
        /* Interface type. (NL80211_IFTYPE_XXX) */
        int if_type;
        /* Is the card operating in AP, STA or IBSS mode? */
        bool operating;
        /* filter flags */
        unsigned int filter_flags;
        /* Stats about the wireless interface */
        struct ieee80211_low_level_stats ieee_stats;

#ifdef CONFIG_B43_HWRNG
        struct hwrng rng;
        bool rng_initialized;
        char rng_name[30 + 1];
#endif /* CONFIG_B43_HWRNG */

        /* List of all wireless devices on this chip */
        struct list_head devlist;
        u8 nr_devs;

        bool radiotap_enabled;
        bool radio_enabled;

        /* The beacon we are currently using (AP or IBSS mode). */
        struct sk_buff *current_beacon;
        bool beacon0_uploaded;
        bool beacon1_uploaded;
        bool beacon_templates_virgin; /* Never wrote the templates? */
        struct work_struct beacon_update_trigger;

        /* The current QOS parameters for the 4 queues. */
        struct b43_qos_params qos_params[4];

        /* Work for adjustment of the transmission power.
         * This is scheduled when we determine that the actual TX output
         * power doesn't match what we want. */
        struct work_struct txpower_adjust_work;

        /* Packet transmit work */
        struct work_struct tx_work;
        /* Queue of packets to be transmitted. */
        struct sk_buff_head tx_queue;

        /* The device LEDs. */
        struct b43_leds leds;

        /* Kmalloc'ed scratch space for PIO TX/RX. Protected by wl->mutex. */
        u8 pio_scratchspace[110] __attribute__((__aligned__(8)));
        u8 pio_tailspace[4] __attribute__((__aligned__(8)));
};

static inline struct b43_wl *hw_to_b43_wl(struct ieee80211_hw *hw)
{
        return hw->priv;
}

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 (NL80211_IFTYPE_XXX). */
static inline int b43_is_mode(struct b43_wl *wl, int type)
{
        return (wl->operating && wl->if_type == type);
}

/**
 * b43_current_band - Returns the currently used band.
 * Returns one of IEEE80211_BAND_2GHZ and IEEE80211_BAND_5GHZ.
 */
static inline enum ieee80211_band b43_current_band(struct b43_wl *wl)
{
        return wl->hw->conf.channel->band;
}

static inline u16 b43_read16(struct b43_wldev *dev, u16 offset)
{
        return ssb_read16(dev->sdev, offset);
}

static inline void b43_write16(struct b43_wldev *dev, u16 offset, u16 value)
{
        ssb_write16(dev->sdev, offset, value);
}

static inline u32 b43_read32(struct b43_wldev *dev, u16 offset)
{
        return ssb_read32(dev->sdev, offset);
}

static inline void b43_write32(struct b43_wldev *dev, u16 offset, u32 value)
{
        ssb_write32(dev->sdev, offset, value);
}

static inline void b43_block_read(struct b43_wldev *dev, void *buffer,
                                 size_t count, u16 offset, u8 reg_width)
{
        ssb_block_read(dev->sdev, buffer, count, offset, reg_width);
}

static inline void b43_block_write(struct b43_wldev *dev, const void *buffer,
                                   size_t count, u16 offset, u8 reg_width)
{
        ssb_block_write(dev->sdev, buffer, count, offset, reg_width);
}

static inline bool b43_using_pio_transfers(struct b43_wldev *dev)
{
        return dev->__using_pio_transfers;
}

#ifdef CONFIG_B43_FORCE_PIO
# define B43_PIO_DEFAULT 1
#else
# define B43_PIO_DEFAULT 0
#endif

/* 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)));
void b43dbg(struct b43_wl *wl, const char *fmt, ...)
    __attribute__ ((format(printf, 2, 3)));


/* 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

/* 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_ */