FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ah.h

     /*-
      * SPDX-License-Identifier: ISC
      *
      * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
      * Copyright (c) 2002-2008 Atheros Communications, Inc.
      *
      * Permission to use, copy, modify, and/or distribute this software for any
      * purpose with or without fee is hereby granted, provided that the above
      * copyright notice and this permission notice appear in all copies.
     *
     * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     *
     * $FreeBSD$
     */
    
    #ifndef _ATH_AH_H_
    #define _ATH_AH_H_
    /*
     * Atheros Hardware Access Layer
     *
     * Clients of the HAL call ath_hal_attach to obtain a reference to an ath_hal
     * structure for use with the device.  Hardware-related operations that
     * follow must call back into the HAL through interface, supplying the
     * reference as the first parameter.
     */
    
    #include "ah_osdep.h"
    
    /*
     * Endianness macros; used by various structures and code.
     */
    #define AH_BIG_ENDIAN           4321
    #define AH_LITTLE_ENDIAN        1234
    
    #if _BYTE_ORDER == _BIG_ENDIAN
    #define AH_BYTE_ORDER   AH_BIG_ENDIAN
    #else
    #define AH_BYTE_ORDER   AH_LITTLE_ENDIAN
    #endif
    
    /*
     * The maximum number of TX/RX chains supported.
     * This is intended to be used by various statistics gathering operations
     * (NF, RSSI, EVM).
     */
    #define AH_MAX_CHAINS                   3
    #define AH_MIMO_MAX_EVM_PILOTS          6
    
    /*
     * __ahdecl is analogous to _cdecl; it defines the calling
     * convention used within the HAL.  For most systems this
     * can just default to be empty and the compiler will (should)
     * use _cdecl.  For systems where _cdecl is not compatible this
     * must be defined.  See linux/ah_osdep.h for an example.
     */
    #ifndef __ahdecl
    #define __ahdecl
    #endif
    
    /*
     * Status codes that may be returned by the HAL.  Note that
     * interfaces that return a status code set it only when an
     * error occurs--i.e. you cannot check it for success.
     */
    typedef enum {
            HAL_OK          = 0,    /* No error */
            HAL_ENXIO       = 1,    /* No hardware present */
            HAL_ENOMEM      = 2,    /* Memory allocation failed */
            HAL_EIO         = 3,    /* Hardware didn't respond as expected */
            HAL_EEMAGIC     = 4,    /* EEPROM magic number invalid */
            HAL_EEVERSION   = 5,    /* EEPROM version invalid */
            HAL_EELOCKED    = 6,    /* EEPROM unreadable */
            HAL_EEBADSUM    = 7,    /* EEPROM checksum invalid */
            HAL_EEREAD      = 8,    /* EEPROM read problem */
            HAL_EEBADMAC    = 9,    /* EEPROM mac address invalid */
            HAL_EESIZE      = 10,   /* EEPROM size not supported */
            HAL_EEWRITE     = 11,   /* Attempt to change write-locked EEPROM */
            HAL_EINVAL      = 12,   /* Invalid parameter to function */
            HAL_ENOTSUPP    = 13,   /* Hardware revision not supported */
            HAL_ESELFTEST   = 14,   /* Hardware self-test failed */
            HAL_EINPROGRESS = 15,   /* Operation incomplete */
            HAL_EEBADREG    = 16,   /* EEPROM invalid regulatory contents */
            HAL_EEBADCC     = 17,   /* EEPROM invalid country code */
            HAL_INV_PMODE   = 18,   /* Couldn't bring out of sleep state */
    } HAL_STATUS;
    
    typedef enum {
            AH_FALSE = 0,           /* NB: lots of code assumes false is zero */
            AH_TRUE  = 1,
    } HAL_BOOL;
    
    typedef enum {
            HAL_CAP_REG_DMN         = 0,    /* current regulatory domain */
           HAL_CAP_CIPHER          = 1,    /* hardware supports cipher */
           HAL_CAP_TKIP_MIC        = 2,    /* handle TKIP MIC in hardware */
           HAL_CAP_TKIP_SPLIT      = 3,    /* hardware TKIP uses split keys */
           HAL_CAP_PHYCOUNTERS     = 4,    /* hardware PHY error counters */
           HAL_CAP_DIVERSITY       = 5,    /* hardware supports fast diversity */
           HAL_CAP_KEYCACHE_SIZE   = 6,    /* number of entries in key cache */
           HAL_CAP_NUM_TXQUEUES    = 7,    /* number of hardware xmit queues */
           HAL_CAP_VEOL            = 9,    /* hardware supports virtual EOL */
           HAL_CAP_PSPOLL          = 10,   /* hardware has working PS-Poll support */
           HAL_CAP_DIAG            = 11,   /* hardware diagnostic support */
           HAL_CAP_COMPRESSION     = 12,   /* hardware supports compression */
           HAL_CAP_BURST           = 13,   /* hardware supports packet bursting */
           HAL_CAP_FASTFRAME       = 14,   /* hardware supoprts fast frames */
           HAL_CAP_TXPOW           = 15,   /* global tx power limit  */
           HAL_CAP_TPC             = 16,   /* per-packet tx power control  */
           HAL_CAP_PHYDIAG         = 17,   /* hardware phy error diagnostic */
           HAL_CAP_BSSIDMASK       = 18,   /* hardware supports bssid mask */
           HAL_CAP_MCAST_KEYSRCH   = 19,   /* hardware has multicast key search */
           HAL_CAP_TSF_ADJUST      = 20,   /* hardware has beacon tsf adjust */
           /* 21 was HAL_CAP_XR */
           HAL_CAP_WME_TKIPMIC     = 22,   /* hardware can support TKIP MIC when WMM is turned on */
           /* 23 was HAL_CAP_CHAN_HALFRATE */
           /* 24 was HAL_CAP_CHAN_QUARTERRATE */
           HAL_CAP_RFSILENT        = 25,   /* hardware has rfsilent support  */
           HAL_CAP_TPC_ACK         = 26,   /* ack txpower with per-packet tpc */
           HAL_CAP_TPC_CTS         = 27,   /* cts txpower with per-packet tpc */
           HAL_CAP_11D             = 28,   /* 11d beacon support for changing cc */
           HAL_CAP_PCIE_PS         = 29,
           HAL_CAP_HT              = 30,   /* hardware can support HT */
           HAL_CAP_GTXTO           = 31,   /* hardware supports global tx timeout */
           HAL_CAP_FAST_CC         = 32,   /* hardware supports fast channel change */
           HAL_CAP_TX_CHAINMASK    = 33,   /* mask of TX chains supported */
           HAL_CAP_RX_CHAINMASK    = 34,   /* mask of RX chains supported */
           HAL_CAP_NUM_GPIO_PINS   = 36,   /* number of GPIO pins */
   
           HAL_CAP_CST             = 38,   /* hardware supports carrier sense timeout */
           HAL_CAP_RIFS_RX         = 39,
           HAL_CAP_RIFS_TX         = 40,
           HAL_CAP_FORCE_PPM       = 41,
           HAL_CAP_RTS_AGGR_LIMIT  = 42,   /* aggregation limit with RTS */
           HAL_CAP_4ADDR_AGGR      = 43,   /* hardware is capable of 4addr aggregation */
           HAL_CAP_DFS_DMN         = 44,   /* current DFS domain */
           HAL_CAP_EXT_CHAN_DFS    = 45,   /* DFS support for extension channel */
           HAL_CAP_COMBINED_RADAR_RSSI     = 46,   /* Is combined RSSI for radar accurate */
   
           HAL_CAP_AUTO_SLEEP      = 48,   /* hardware can go to network sleep
                                              automatically after waking up to receive TIM */
           HAL_CAP_MBSSID_AGGR_SUPPORT     = 49, /* Support for mBSSID Aggregation */
           HAL_CAP_SPLIT_4KB_TRANS = 50,   /* hardware supports descriptors straddling a 4k page boundary */
           HAL_CAP_REG_FLAG        = 51,   /* Regulatory domain flags */
           HAL_CAP_BB_RIFS_HANG    = 52,
           HAL_CAP_RIFS_RX_ENABLED = 53,
           HAL_CAP_BB_DFS_HANG     = 54,
   
           HAL_CAP_RX_STBC         = 58,
           HAL_CAP_TX_STBC         = 59,
   
           HAL_CAP_BT_COEX         = 60,   /* hardware is capable of bluetooth coexistence */
           HAL_CAP_DYNAMIC_SMPS    = 61,   /* Dynamic MIMO Power Save hardware support */
   
           HAL_CAP_DS              = 67,   /* 2 stream */
           HAL_CAP_BB_RX_CLEAR_STUCK_HANG  = 68,
           HAL_CAP_MAC_HANG        = 69,   /* can MAC hang */
           HAL_CAP_MFP             = 70,   /* Management Frame Protection in hardware */
   
           HAL_CAP_TS              = 72,   /* 3 stream */
   
           HAL_CAP_ENHANCED_DMA_SUPPORT    = 75,   /* DMA FIFO support */
           HAL_CAP_NUM_TXMAPS      = 76,   /* Number of buffers in a transmit descriptor */
           HAL_CAP_TXDESCLEN       = 77,   /* Length of transmit descriptor */
           HAL_CAP_TXSTATUSLEN     = 78,   /* Length of transmit status descriptor */
           HAL_CAP_RXSTATUSLEN     = 79,   /* Length of transmit status descriptor */
           HAL_CAP_RXFIFODEPTH     = 80,   /* Receive hardware FIFO depth */
           HAL_CAP_RXBUFSIZE       = 81,   /* Receive Buffer Length */
           HAL_CAP_NUM_MR_RETRIES  = 82,   /* limit on multirate retries */
           HAL_CAP_OL_PWRCTRL      = 84,   /* Open loop TX power control */
           HAL_CAP_SPECTRAL_SCAN   = 90,   /* Hardware supports spectral scan */
   
           HAL_CAP_BB_PANIC_WATCHDOG       = 92,
   
           HAL_CAP_HT20_SGI        = 96,   /* hardware supports HT20 short GI */
   
           HAL_CAP_LDPC            = 99,
   
           HAL_CAP_RXTSTAMP_PREC   = 100,  /* rx desc tstamp precision (bits) */
   
           HAL_CAP_ANT_DIV_COMB    = 105,  /* Enable antenna diversity/combining */
           HAL_CAP_PHYRESTART_CLR_WAR      = 106,  /* in some cases, clear phy restart to fix bb hang */
           HAL_CAP_ENTERPRISE_MODE = 107,  /* Enterprise mode features */
           HAL_CAP_LDPCWAR         = 108,
           HAL_CAP_CHANNEL_SWITCH_TIME_USEC        = 109,  /* Channel change time, usec */
           HAL_CAP_ENABLE_APM      = 110,  /* APM enabled */
           HAL_CAP_PCIE_LCR_EXTSYNC_EN     = 111,
           HAL_CAP_PCIE_LCR_OFFSET = 112,
   
           HAL_CAP_ENHANCED_DFS_SUPPORT    = 117,  /* hardware supports enhanced DFS */
           HAL_CAP_MCI             = 118,
           HAL_CAP_SMARTANTENNA    = 119,
           HAL_CAP_TRAFFIC_FAST_RECOVER    = 120,
           HAL_CAP_TX_DIVERSITY    = 121,
           HAL_CAP_CRDC            = 122,
   
           /* The following are private to the FreeBSD HAL (224 onward) */
   
           HAL_CAP_INTMIT          = 229,  /* interference mitigation */
           HAL_CAP_RXORN_FATAL     = 230,  /* HAL_INT_RXORN treated as fatal */
           HAL_CAP_BB_HANG         = 235,  /* can baseband hang */
           HAL_CAP_INTRMASK        = 237,  /* bitmask of supported interrupts */
           HAL_CAP_BSSIDMATCH      = 238,  /* hardware has disable bssid match */
           HAL_CAP_STREAMS         = 239,  /* how many 802.11n spatial streams are available */
           HAL_CAP_RXDESC_SELFLINK = 242,  /* support a self-linked tail RX descriptor */
           HAL_CAP_BB_READ_WAR     = 244,  /* baseband read WAR */
           HAL_CAP_SERIALISE_WAR   = 245,  /* serialise register access on PCI */
           HAL_CAP_ENFORCE_TXOP    = 246,  /* Enforce TXOP if supported */
           HAL_CAP_RX_LNA_MIXING   = 247,  /* RX hardware uses LNA mixing */
           HAL_CAP_DO_MYBEACON     = 248,  /* Supports HAL_RX_FILTER_MYBEACON */
           HAL_CAP_TOA_LOCATIONING = 249,  /* time of flight / arrival locationing */
           HAL_CAP_TXTSTAMP_PREC   = 250,  /* tx desc tstamp precision (bits) */
   } HAL_CAPABILITY_TYPE;
   
   /* 
    * "States" for setting the LED.  These correspond to
    * the possible 802.11 operational states and there may
    * be a many-to-one mapping between these states and the
    * actual hardware state for the LED's (i.e. the hardware
    * may have fewer states).
    */
   typedef enum {
           HAL_LED_INIT    = 0,
           HAL_LED_SCAN    = 1,
           HAL_LED_AUTH    = 2,
           HAL_LED_ASSOC   = 3,
           HAL_LED_RUN     = 4
   } HAL_LED_STATE;
   
   /*
    * Transmit queue types/numbers.  These are used to tag
    * each transmit queue in the hardware and to identify a set
    * of transmit queues for operations such as start/stop dma.
    */
   typedef enum {
           HAL_TX_QUEUE_INACTIVE   = 0,            /* queue is inactive/unused */
           HAL_TX_QUEUE_DATA       = 1,            /* data xmit q's */
           HAL_TX_QUEUE_BEACON     = 2,            /* beacon xmit q */
           HAL_TX_QUEUE_CAB        = 3,            /* "crap after beacon" xmit q */
           HAL_TX_QUEUE_UAPSD      = 4,            /* u-apsd power save xmit q */
           HAL_TX_QUEUE_PSPOLL     = 5,            /* power save poll xmit q */
           HAL_TX_QUEUE_CFEND      = 6,
           HAL_TX_QUEUE_PAPRD      = 7,
   } HAL_TX_QUEUE;
   
   #define HAL_NUM_TX_QUEUES       10              /* max possible # of queues */
   
   /*
    * Receive queue types.  These are used to tag
    * each transmit queue in the hardware and to identify a set
    * of transmit queues for operations such as start/stop dma.
    */
   typedef enum {
           HAL_RX_QUEUE_HP = 0,                    /* high priority recv queue */
           HAL_RX_QUEUE_LP = 1,                    /* low priority recv queue */
   } HAL_RX_QUEUE;
   
   #define HAL_NUM_RX_QUEUES       2               /* max possible # of queues */
   
   #define HAL_TXFIFO_DEPTH        8               /* transmit fifo depth */
   
   /*
    * Transmit queue subtype.  These map directly to
    * WME Access Categories (except for UPSD).  Refer
    * to Table 5 of the WME spec.
    */
   typedef enum {
           HAL_WME_AC_BK   = 0,                    /* background access category */
           HAL_WME_AC_BE   = 1,                    /* best effort access category*/
           HAL_WME_AC_VI   = 2,                    /* video access category */
           HAL_WME_AC_VO   = 3,                    /* voice access category */
           HAL_WME_UPSD    = 4,                    /* uplink power save */
   } HAL_TX_QUEUE_SUBTYPE;
   
   /*
    * Transmit queue flags that control various
    * operational parameters.
    */
   typedef enum {
           /*
            * Per queue interrupt enables.  When set the associated
            * interrupt may be delivered for packets sent through
            * the queue.  Without these enabled no interrupts will
            * be delivered for transmits through the queue.
            */
           HAL_TXQ_TXOKINT_ENABLE     = 0x0001,    /* enable TXOK interrupt */
           HAL_TXQ_TXERRINT_ENABLE    = 0x0001,    /* enable TXERR interrupt */
           HAL_TXQ_TXDESCINT_ENABLE   = 0x0002,    /* enable TXDESC interrupt */
           HAL_TXQ_TXEOLINT_ENABLE    = 0x0004,    /* enable TXEOL interrupt */
           HAL_TXQ_TXURNINT_ENABLE    = 0x0008,    /* enable TXURN interrupt */
           /*
            * Enable hardware compression for packets sent through
            * the queue.  The compression buffer must be setup and
            * packets must have a key entry marked in the tx descriptor.
            */
           HAL_TXQ_COMPRESSION_ENABLE  = 0x0010,   /* enable h/w compression */
           /*
            * Disable queue when veol is hit or ready time expires.
            * By default the queue is disabled only on reaching the
            * physical end of queue (i.e. a null link ptr in the
            * descriptor chain).
            */
           HAL_TXQ_RDYTIME_EXP_POLICY_ENABLE = 0x0020,
           /*
            * Schedule frames on delivery of a DBA (DMA Beacon Alert)
            * event.  Frames will be transmitted only when this timer
            * fires, e.g to transmit a beacon in ap or adhoc modes.
            */
           HAL_TXQ_DBA_GATED           = 0x0040,   /* schedule based on DBA */
           /*
            * Each transmit queue has a counter that is incremented
            * each time the queue is enabled and decremented when
            * the list of frames to transmit is traversed (or when
            * the ready time for the queue expires).  This counter
            * must be non-zero for frames to be scheduled for
            * transmission.  The following controls disable bumping
            * this counter under certain conditions.  Typically this
            * is used to gate frames based on the contents of another
            * queue (e.g. CAB traffic may only follow a beacon frame).
            * These are meaningful only when frames are scheduled
            * with a non-ASAP policy (e.g. DBA-gated).
            */
           HAL_TXQ_CBR_DIS_QEMPTY      = 0x0080,   /* disable on this q empty */
           HAL_TXQ_CBR_DIS_BEMPTY      = 0x0100,   /* disable on beacon q empty */
   
           /*
            * Fragment burst backoff policy.  Normally the no backoff
            * is done after a successful transmission, the next fragment
            * is sent at SIFS.  If this flag is set backoff is done
            * after each fragment, regardless whether it was ack'd or
            * not, after the backoff count reaches zero a normal channel
            * access procedure is done before the next transmit (i.e.
            * wait AIFS instead of SIFS).
            */
           HAL_TXQ_FRAG_BURST_BACKOFF_ENABLE = 0x00800000,
           /*
            * Disable post-tx backoff following each frame.
            */
           HAL_TXQ_BACKOFF_DISABLE     = 0x00010000, /* disable post backoff  */
           /*
            * DCU arbiter lockout control.  This controls how
            * lower priority tx queues are handled with respect to
            * to a specific queue when multiple queues have frames
            * to send.  No lockout means lower priority queues arbitrate
            * concurrently with this queue.  Intra-frame lockout
            * means lower priority queues are locked out until the
            * current frame transmits (e.g. including backoffs and bursting).
            * Global lockout means nothing lower can arbitrary so
            * long as there is traffic activity on this queue (frames,
            * backoff, etc).
            */
           HAL_TXQ_ARB_LOCKOUT_INTRA   = 0x00020000, /* intra-frame lockout */
           HAL_TXQ_ARB_LOCKOUT_GLOBAL  = 0x00040000, /* full lockout s */
   
           HAL_TXQ_IGNORE_VIRTCOL      = 0x00080000, /* ignore virt collisions */
           HAL_TXQ_SEQNUM_INC_DIS      = 0x00100000, /* disable seqnum increment */
   } HAL_TX_QUEUE_FLAGS;
   
   typedef struct {
           uint32_t        tqi_ver;                /* hal TXQ version */
           HAL_TX_QUEUE_SUBTYPE tqi_subtype;       /* subtype if applicable */
           HAL_TX_QUEUE_FLAGS tqi_qflags;          /* flags (see above) */
           uint32_t        tqi_priority;           /* (not used) */
           uint32_t        tqi_aifs;               /* aifs */
           uint32_t        tqi_cwmin;              /* cwMin */
           uint32_t        tqi_cwmax;              /* cwMax */
           uint16_t        tqi_shretry;            /* rts retry limit */
           uint16_t        tqi_lgretry;            /* long retry limit (not used)*/
           uint32_t        tqi_cbrPeriod;          /* CBR period (us) */
           uint32_t        tqi_cbrOverflowLimit;   /* threshold for CBROVF int */
           uint32_t        tqi_burstTime;          /* max burst duration (us) */
           uint32_t        tqi_readyTime;          /* frame schedule time (us) */
           uint32_t        tqi_compBuf;            /* comp buffer phys addr */
   } HAL_TXQ_INFO;
   
   #define HAL_TQI_NONVAL 0xffff
   
   /* token to use for aifs, cwmin, cwmax */
   #define HAL_TXQ_USEDEFAULT      ((uint32_t) -1)
   
   /* compression definitions */
   #define HAL_COMP_BUF_MAX_SIZE           9216            /* 9K */
   #define HAL_COMP_BUF_ALIGN_SIZE         512
   
   /*
    * Transmit packet types.  This belongs in ah_desc.h, but
    * is here so we can give a proper type to various parameters
    * (and not require everyone include the file).
    *
    * NB: These values are intentionally assigned for
    *     direct use when setting up h/w descriptors.
    */
   typedef enum {
           HAL_PKT_TYPE_NORMAL     = 0,
           HAL_PKT_TYPE_ATIM       = 1,
           HAL_PKT_TYPE_PSPOLL     = 2,
           HAL_PKT_TYPE_BEACON     = 3,
           HAL_PKT_TYPE_PROBE_RESP = 4,
           HAL_PKT_TYPE_CHIRP      = 5,
           HAL_PKT_TYPE_GRP_POLL   = 6,
           HAL_PKT_TYPE_AMPDU      = 7,
   } HAL_PKT_TYPE;
   
   /* Rx Filter Frame Types */
   typedef enum {
           /*
            * These bits correspond to AR_RX_FILTER for all chips.
            * Not all bits are supported by all chips.
            */
           HAL_RX_FILTER_UCAST     = 0x00000001,   /* Allow unicast frames */
           HAL_RX_FILTER_MCAST     = 0x00000002,   /* Allow multicast frames */
           HAL_RX_FILTER_BCAST     = 0x00000004,   /* Allow broadcast frames */
           HAL_RX_FILTER_CONTROL   = 0x00000008,   /* Allow control frames */
           HAL_RX_FILTER_BEACON    = 0x00000010,   /* Allow beacon frames */
           HAL_RX_FILTER_PROM      = 0x00000020,   /* Promiscuous mode */
           HAL_RX_FILTER_PROBEREQ  = 0x00000080,   /* Allow probe request frames */
           HAL_RX_FILTER_PHYERR    = 0x00000100,   /* Allow phy errors */
           HAL_RX_FILTER_MYBEACON  = 0x00000200,   /* Filter beacons other than mine */
           HAL_RX_FILTER_COMPBAR   = 0x00000400,   /* Allow compressed BAR */
           HAL_RX_FILTER_COMP_BA   = 0x00000800,   /* Allow compressed blockack */
           HAL_RX_FILTER_PHYRADAR  = 0x00002000,   /* Allow phy radar errors */
           HAL_RX_FILTER_PSPOLL    = 0x00004000,   /* Allow PS-POLL frames */
           HAL_RX_FILTER_MCAST_BCAST_ALL   = 0x00008000,
                                                   /* Allow all mcast/bcast frames */
   
           /*
            * Magic RX filter flags that aren't targeting hardware bits
            * but instead the HAL sets individual bits - eg PHYERR will result
            * in OFDM/CCK timing error frames being received.
            */
           HAL_RX_FILTER_BSSID     = 0x40000000,   /* Disable BSSID match */
   } HAL_RX_FILTER;
   
   typedef enum {
           HAL_PM_AWAKE            = 0,
           HAL_PM_FULL_SLEEP       = 1,
           HAL_PM_NETWORK_SLEEP    = 2,
           HAL_PM_UNDEFINED        = 3
   } HAL_POWER_MODE;
   
   /*
    * Enterprise mode flags
    */
   #define AH_ENT_DUAL_BAND_DISABLE        0x00000001
   #define AH_ENT_CHAIN2_DISABLE           0x00000002
   #define AH_ENT_5MHZ_DISABLE             0x00000004
   #define AH_ENT_10MHZ_DISABLE            0x00000008
   #define AH_ENT_49GHZ_DISABLE            0x00000010
   #define AH_ENT_LOOPBACK_DISABLE         0x00000020
   #define AH_ENT_TPC_PERF_DISABLE         0x00000040
   #define AH_ENT_MIN_PKT_SIZE_DISABLE     0x00000080
   #define AH_ENT_SPECTRAL_PRECISION       0x00000300
   #define AH_ENT_SPECTRAL_PRECISION_S     8
   #define AH_ENT_RTSCTS_DELIM_WAR         0x00010000
   
   #define AH_FIRST_DESC_NDELIMS 60
   
   /*
    * NOTE WELL:
    * These are mapped to take advantage of the common locations for many of
    * the bits on all of the currently supported MAC chips. This is to make
    * the ISR as efficient as possible, while still abstracting HW differences.
    * When new hardware breaks this commonality this enumerated type, as well
    * as the HAL functions using it, must be modified. All values are directly
    * mapped unless commented otherwise.
    */
   typedef enum {
           HAL_INT_RX      = 0x00000001,   /* Non-common mapping */
           HAL_INT_RXDESC  = 0x00000002,   /* Legacy mapping */
           HAL_INT_RXERR   = 0x00000004,
           HAL_INT_RXHP    = 0x00000001,   /* EDMA */
           HAL_INT_RXLP    = 0x00000002,   /* EDMA */
           HAL_INT_RXNOFRM = 0x00000008,
           HAL_INT_RXEOL   = 0x00000010,
           HAL_INT_RXORN   = 0x00000020,
           HAL_INT_TX      = 0x00000040,   /* Non-common mapping */
           HAL_INT_TXDESC  = 0x00000080,
           HAL_INT_TIM_TIMER= 0x00000100,
           HAL_INT_MCI     = 0x00000200,
           HAL_INT_BBPANIC = 0x00000400,
           HAL_INT_TXURN   = 0x00000800,
           HAL_INT_MIB     = 0x00001000,
           HAL_INT_RXPHY   = 0x00004000,
           HAL_INT_RXKCM   = 0x00008000,
           HAL_INT_SWBA    = 0x00010000,
           HAL_INT_BRSSI   = 0x00020000,
           HAL_INT_BMISS   = 0x00040000,
           HAL_INT_BNR     = 0x00100000,
           HAL_INT_TIM     = 0x00200000,   /* Non-common mapping */
           HAL_INT_DTIM    = 0x00400000,   /* Non-common mapping */
           HAL_INT_DTIMSYNC= 0x00800000,   /* Non-common mapping */
           HAL_INT_GPIO    = 0x01000000,
           HAL_INT_CABEND  = 0x02000000,   /* Non-common mapping */
           HAL_INT_TSFOOR  = 0x04000000,   /* Non-common mapping */
           HAL_INT_TBTT    = 0x08000000,   /* Non-common mapping */
           /* Atheros ref driver has a generic timer interrupt now..*/
           HAL_INT_GENTIMER        = 0x08000000,   /* Non-common mapping */
           HAL_INT_CST     = 0x10000000,   /* Non-common mapping */
           HAL_INT_GTT     = 0x20000000,   /* Non-common mapping */
           HAL_INT_FATAL   = 0x40000000,   /* Non-common mapping */
   #define HAL_INT_GLOBAL  0x80000000      /* Set/clear IER */
           HAL_INT_BMISC   = HAL_INT_TIM
                           | HAL_INT_DTIM
                           | HAL_INT_DTIMSYNC
                           | HAL_INT_CABEND
                           | HAL_INT_TBTT,
   
           /* Interrupt bits that map directly to ISR/IMR bits */
           HAL_INT_COMMON  = HAL_INT_RXNOFRM
                           | HAL_INT_RXDESC
                           | HAL_INT_RXEOL
                           | HAL_INT_RXORN
                           | HAL_INT_TXDESC
                           | HAL_INT_TXURN
                           | HAL_INT_MIB
                           | HAL_INT_RXPHY
                           | HAL_INT_RXKCM
                           | HAL_INT_SWBA
                           | HAL_INT_BMISS
                           | HAL_INT_BRSSI
                           | HAL_INT_BNR
                           | HAL_INT_GPIO,
   } HAL_INT;
   
   /*
    * MSI vector assignments
    */
   typedef enum {
           HAL_MSIVEC_MISC = 0,
           HAL_MSIVEC_TX   = 1,
           HAL_MSIVEC_RXLP = 2,
           HAL_MSIVEC_RXHP = 3,
   } HAL_MSIVEC;
   
   typedef enum {
           HAL_INT_LINE = 0,
           HAL_INT_MSI  = 1,
   } HAL_INT_TYPE;
   
   /* For interrupt mitigation registers */
   typedef enum {
           HAL_INT_RX_FIRSTPKT=0,
           HAL_INT_RX_LASTPKT,
           HAL_INT_TX_FIRSTPKT,
           HAL_INT_TX_LASTPKT,
           HAL_INT_THRESHOLD
   } HAL_INT_MITIGATION;
   
   /* XXX this is duplicate information! */
   typedef struct {
           u_int32_t       cyclecnt_diff;          /* delta cycle count */
           u_int32_t       rxclr_cnt;              /* rx clear count */
           u_int32_t       extrxclr_cnt;           /* ext chan rx clear count */
           u_int32_t       txframecnt_diff;        /* delta tx frame count */
           u_int32_t       rxframecnt_diff;        /* delta rx frame count */
           u_int32_t       listen_time;            /* listen time in msec - time for which ch is free */
           u_int32_t       ofdmphyerr_cnt;         /* OFDM err count since last reset */
           u_int32_t       cckphyerr_cnt;          /* CCK err count since last reset */
           u_int32_t       ofdmphyerrcnt_diff;     /* delta OFDM Phy Error Count */
           HAL_BOOL        valid;                  /* if the stats are valid*/
   } HAL_ANISTATS;
   
   typedef struct {
           u_int8_t        txctl_offset;
           u_int8_t        txctl_numwords;
           u_int8_t        txstatus_offset;
           u_int8_t        txstatus_numwords;
   
           u_int8_t        rxctl_offset;
           u_int8_t        rxctl_numwords;
           u_int8_t        rxstatus_offset;
           u_int8_t        rxstatus_numwords;
   
           u_int8_t        macRevision;
   } HAL_DESC_INFO;
   
   typedef enum {
           HAL_GPIO_OUTPUT_MUX_AS_OUTPUT           = 0,
           HAL_GPIO_OUTPUT_MUX_PCIE_ATTENTION_LED  = 1,
           HAL_GPIO_OUTPUT_MUX_PCIE_POWER_LED      = 2,
           HAL_GPIO_OUTPUT_MUX_MAC_NETWORK_LED     = 3,
           HAL_GPIO_OUTPUT_MUX_MAC_POWER_LED       = 4,
           HAL_GPIO_OUTPUT_MUX_AS_WLAN_ACTIVE      = 5,
           HAL_GPIO_OUTPUT_MUX_AS_TX_FRAME         = 6,
   
           HAL_GPIO_OUTPUT_MUX_AS_MCI_WLAN_DATA,
           HAL_GPIO_OUTPUT_MUX_AS_MCI_WLAN_CLK,
           HAL_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA,
           HAL_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK,
           HAL_GPIO_OUTPUT_MUX_AS_WL_IN_TX,
           HAL_GPIO_OUTPUT_MUX_AS_WL_IN_RX,
           HAL_GPIO_OUTPUT_MUX_AS_BT_IN_TX,
           HAL_GPIO_OUTPUT_MUX_AS_BT_IN_RX,
           HAL_GPIO_OUTPUT_MUX_AS_RUCKUS_STROBE,
           HAL_GPIO_OUTPUT_MUX_AS_RUCKUS_DATA,
           HAL_GPIO_OUTPUT_MUX_AS_SMARTANT_CTRL0,
           HAL_GPIO_OUTPUT_MUX_AS_SMARTANT_CTRL1,
           HAL_GPIO_OUTPUT_MUX_AS_SMARTANT_CTRL2,
           HAL_GPIO_OUTPUT_MUX_NUM_ENTRIES
   } HAL_GPIO_MUX_TYPE;
   
   typedef enum {
           HAL_GPIO_INTR_LOW               = 0,
           HAL_GPIO_INTR_HIGH              = 1,
           HAL_GPIO_INTR_DISABLE           = 2
   } HAL_GPIO_INTR_TYPE;
   
   typedef struct halCounters {
       u_int32_t   tx_frame_count;
       u_int32_t   rx_frame_count;
       u_int32_t   rx_clear_count;
       u_int32_t   cycle_count;
       u_int8_t    is_rx_active;     // true (1) or false (0)
       u_int8_t    is_tx_active;     // true (1) or false (0)
   } HAL_COUNTERS;
   
   typedef enum {
           HAL_RFGAIN_INACTIVE             = 0,
           HAL_RFGAIN_READ_REQUESTED       = 1,
           HAL_RFGAIN_NEED_CHANGE          = 2
   } HAL_RFGAIN;
   
   typedef uint16_t HAL_CTRY_CODE;         /* country code */
   typedef uint16_t HAL_REG_DOMAIN;                /* regulatory domain code */
   
   #define HAL_ANTENNA_MIN_MODE  0
   #define HAL_ANTENNA_FIXED_A   1
   #define HAL_ANTENNA_FIXED_B   2
   #define HAL_ANTENNA_MAX_MODE  3
   
   typedef struct {
           uint32_t        ackrcv_bad;
           uint32_t        rts_bad;
           uint32_t        rts_good;
           uint32_t        fcs_bad;
           uint32_t        beacons;
   } HAL_MIB_STATS;
   
   /*
    * These bits represent what's in ah_currentRDext.
    */
   typedef enum {
           REG_EXT_FCC_MIDBAND             = 0,
           REG_EXT_JAPAN_MIDBAND           = 1,
           REG_EXT_FCC_DFS_HT40            = 2,
           REG_EXT_JAPAN_NONDFS_HT40       = 3,
           REG_EXT_JAPAN_DFS_HT40          = 4,
           REG_EXT_FCC_CH_144              = 5,
   } REG_EXT_BITMAP;
   
   enum {
           HAL_MODE_11A    = 0x001,                /* 11a channels */
           HAL_MODE_TURBO  = 0x002,                /* 11a turbo-only channels */
           HAL_MODE_11B    = 0x004,                /* 11b channels */
           HAL_MODE_PUREG  = 0x008,                /* 11g channels (OFDM only) */
   #ifdef notdef
           HAL_MODE_11G    = 0x010,                /* 11g channels (OFDM/CCK) */
   #else
           HAL_MODE_11G    = 0x008,                /* XXX historical */
   #endif
           HAL_MODE_108G   = 0x020,                /* 11g+Turbo channels */
           HAL_MODE_108A   = 0x040,                /* 11a+Turbo channels */
           HAL_MODE_11A_HALF_RATE = 0x200,         /* 11a half width channels */
           HAL_MODE_11A_QUARTER_RATE = 0x400,      /* 11a quarter width channels */
           HAL_MODE_11G_HALF_RATE = 0x800,         /* 11g half width channels */
           HAL_MODE_11G_QUARTER_RATE = 0x1000,     /* 11g quarter width channels */
           HAL_MODE_11NG_HT20      = 0x008000,
           HAL_MODE_11NA_HT20      = 0x010000,
           HAL_MODE_11NG_HT40PLUS  = 0x020000,
           HAL_MODE_11NG_HT40MINUS = 0x040000,
           HAL_MODE_11NA_HT40PLUS  = 0x080000,
           HAL_MODE_11NA_HT40MINUS = 0x100000,
           HAL_MODE_ALL    = 0xffffff
   };
   
   typedef struct {
           int             rateCount;              /* NB: for proper padding */
           uint8_t         rateCodeToIndex[256];   /* back mapping */
           struct {
                   uint8_t         valid;          /* valid for rate control use */
                   uint8_t         phy;            /* CCK/OFDM/XR */
                   uint32_t        rateKbps;       /* transfer rate in kbs */
                   uint8_t         rateCode;       /* rate for h/w descriptors */
                   uint8_t         shortPreamble;  /* mask for enabling short
                                                    * preamble in CCK rate code */
                   uint8_t         dot11Rate;      /* value for supported rates
                                                    * info element of MLME */
                   uint8_t         controlRate;    /* index of next lower basic
                                                    * rate; used for dur. calcs */
                   uint16_t        lpAckDuration;  /* long preamble ACK duration */
                   uint16_t        spAckDuration;  /* short preamble ACK duration*/
           } info[64];
   } HAL_RATE_TABLE;
   
   typedef struct {
           u_int           rs_count;               /* number of valid entries */
           uint8_t rs_rates[64];           /* rates */
   } HAL_RATE_SET;
   
   /*
    * 802.11n specific structures and enums
    */
   typedef enum {
           HAL_CHAINTYPE_TX        = 1,    /* Tx chain type */
           HAL_CHAINTYPE_RX        = 2,    /* RX chain type */
   } HAL_CHAIN_TYPE;
   
   typedef struct {
           u_int   Tries;
           u_int   Rate;           /* hardware rate code */
           u_int   RateIndex;      /* rate series table index */
           u_int   PktDuration;
           u_int   ChSel;
           u_int   RateFlags;
   #define HAL_RATESERIES_RTS_CTS          0x0001  /* use rts/cts w/this series */
   #define HAL_RATESERIES_2040             0x0002  /* use ext channel for series */
   #define HAL_RATESERIES_HALFGI           0x0004  /* use half-gi for series */
   #define HAL_RATESERIES_STBC             0x0008  /* use STBC for series */
           u_int   tx_power_cap;           /* in 1/2 dBm units XXX TODO */
   } HAL_11N_RATE_SERIES;
   
   typedef enum {
           HAL_HT_MACMODE_20       = 0,    /* 20 MHz operation */
           HAL_HT_MACMODE_2040     = 1,    /* 20/40 MHz operation */
   } HAL_HT_MACMODE;
   
   typedef enum {
           HAL_HT_PHYMODE_20       = 0,    /* 20 MHz operation */
           HAL_HT_PHYMODE_2040     = 1,    /* 20/40 MHz operation */
   } HAL_HT_PHYMODE;
   
   typedef enum {
           HAL_HT_EXTPROTSPACING_20 = 0,   /* 20 MHz spacing */
           HAL_HT_EXTPROTSPACING_25 = 1,   /* 25 MHz spacing */
   } HAL_HT_EXTPROTSPACING;
   
   typedef enum {
           HAL_RX_CLEAR_CTL_LOW    = 0x1,  /* force control channel to appear busy */
           HAL_RX_CLEAR_EXT_LOW    = 0x2,  /* force extension channel to appear busy */
   } HAL_HT_RXCLEAR;
   
   typedef enum {
           HAL_FREQ_BAND_5GHZ      = 0,
           HAL_FREQ_BAND_2GHZ      = 1,
   } HAL_FREQ_BAND;
   
   /*
    * Antenna switch control.  By default antenna selection
    * enables multiple (2) antenna use.  To force use of the
    * A or B antenna only specify a fixed setting.  Fixing
    * the antenna will also disable any diversity support.
    */
   typedef enum {
           HAL_ANT_VARIABLE = 0,                   /* variable by programming */
           HAL_ANT_FIXED_A  = 1,                   /* fixed antenna A */
           HAL_ANT_FIXED_B  = 2,                   /* fixed antenna B */
   } HAL_ANT_SETTING;
   
   typedef enum {
           HAL_M_STA       = 1,                    /* infrastructure station */
           HAL_M_IBSS      = 0,                    /* IBSS (adhoc) station */
           HAL_M_HOSTAP    = 6,                    /* Software Access Point */
           HAL_M_MONITOR   = 8                     /* Monitor mode */
   } HAL_OPMODE;
   
   typedef enum {
           HAL_RESET_NORMAL        = 0,            /* Do normal reset */
           HAL_RESET_BBPANIC       = 1,            /* Reset because of BB panic */
           HAL_RESET_FORCE_COLD    = 2,            /* Force full reset */
   } HAL_RESET_TYPE;
   
   enum {
           HAL_RESET_POWER_ON,
           HAL_RESET_WARM,
           HAL_RESET_COLD
   };
   
   typedef struct {
           uint8_t         kv_type;                /* one of HAL_CIPHER */
           uint8_t         kv_apsd;                /* Mask for APSD enabled ACs */
           uint16_t        kv_len;                 /* length in bits */
           uint8_t         kv_val[16];             /* enough for 128-bit keys */
           uint8_t         kv_mic[8];              /* TKIP MIC key */
           uint8_t         kv_txmic[8];            /* TKIP TX MIC key (optional) */
   } HAL_KEYVAL;
   
   /*
    * This is the TX descriptor field which marks the key padding requirement.
    * The naming is unfortunately unclear.
    */
   #define AH_KEYTYPE_MASK     0x0F
   typedef enum {
       HAL_KEY_TYPE_CLEAR,
       HAL_KEY_TYPE_WEP,
       HAL_KEY_TYPE_AES,
       HAL_KEY_TYPE_TKIP,
   } HAL_KEY_TYPE;
   
   typedef enum {
           HAL_CIPHER_WEP          = 0,
           HAL_CIPHER_AES_OCB      = 1,
           HAL_CIPHER_AES_CCM      = 2,
           HAL_CIPHER_CKIP         = 3,
           HAL_CIPHER_TKIP         = 4,
           HAL_CIPHER_CLR          = 5,            /* no encryption */
   
           HAL_CIPHER_MIC          = 127           /* TKIP-MIC, not a cipher */
   } HAL_CIPHER;
   
   enum {
           HAL_SLOT_TIME_6  = 6,                   /* NB: for turbo mode */
           HAL_SLOT_TIME_9  = 9,
           HAL_SLOT_TIME_20 = 20,
   };
   
   /*
    * Per-station beacon timer state.  Note that the specified
    * beacon interval (given in TU's) can also include flags
    * to force a TSF reset and to enable the beacon xmit logic.
    * If bs_cfpmaxduration is non-zero the hardware is setup to
    * coexist with a PCF-capable AP.
    */
   typedef struct {
           uint32_t        bs_nexttbtt;            /* next beacon in TU */
           uint32_t        bs_nextdtim;            /* next DTIM in TU */
           uint32_t        bs_intval;              /* beacon interval+flags */
   /*
    * HAL_BEACON_PERIOD, HAL_BEACON_ENA and HAL_BEACON_RESET_TSF
    * are all 1:1 correspondances with the pre-11n chip AR_BEACON
    * register.
    */
   #define HAL_BEACON_PERIOD       0x0000ffff      /* beacon interval period */
   #define HAL_BEACON_PERIOD_TU8   0x0007ffff      /* beacon interval, tu/8 */
   #define HAL_BEACON_ENA          0x00800000      /* beacon xmit enable */
   #define HAL_BEACON_RESET_TSF    0x01000000      /* clear TSF */
   #define HAL_TSFOOR_THRESHOLD    0x00004240      /* TSF OOR thresh (16k uS) */
           uint32_t        bs_dtimperiod;
           uint16_t        bs_cfpperiod;           /* CFP period in TU */
           uint16_t        bs_cfpmaxduration;      /* max CFP duration in TU */
           uint32_t        bs_cfpnext;             /* next CFP in TU */
           uint16_t        bs_timoffset;           /* byte offset to TIM bitmap */
           uint16_t        bs_bmissthreshold;      /* beacon miss threshold */
           uint32_t        bs_sleepduration;       /* max sleep duration */
           uint32_t        bs_tsfoor_threshold;    /* TSF out of range threshold */
   } HAL_BEACON_STATE;
   
   /*
    * Like HAL_BEACON_STATE but for non-station mode setup.
    * NB: see above flag definitions for bt_intval. 
    */
   typedef struct {
           uint32_t        bt_intval;              /* beacon interval+flags */
           uint32_t        bt_nexttbtt;            /* next beacon in TU */
           uint32_t        bt_nextatim;            /* next ATIM in TU */
           uint32_t        bt_nextdba;             /* next DBA in 1/8th TU */
           uint32_t        bt_nextswba;            /* next SWBA in 1/8th TU */
           uint32_t        bt_flags;               /* timer enables */
   #define HAL_BEACON_TBTT_EN      0x00000001
   #define HAL_BEACON_DBA_EN       0x00000002
   #define HAL_BEACON_SWBA_EN      0x00000004
   } HAL_BEACON_TIMERS;
   
   /*
    * Per-node statistics maintained by the driver for use in
    * optimizing signal quality and other operational aspects.
    */
   typedef struct {
           uint32_t        ns_avgbrssi;    /* average beacon rssi */
           uint32_t        ns_avgrssi;     /* average data rssi */
           uint32_t        ns_avgtxrssi;   /* average tx rssi */
   } HAL_NODE_STATS;
   
   #define HAL_RSSI_EP_MULTIPLIER  (1<<7)  /* pow2 to optimize out * and / */
   
   /*
    * This is the ANI state and MIB stats.
    *
    * It's used by the HAL modules to keep state /and/ by the debug ioctl
    * to fetch ANI information.
    */
   typedef struct {
           uint32_t        ast_ani_niup;   /* ANI increased noise immunity */
           uint32_t        ast_ani_nidown; /* ANI decreased noise immunity */
           uint32_t        ast_ani_spurup; /* ANI increased spur immunity */
           uint32_t        ast_ani_spurdown;/* ANI descreased spur immunity */
           uint32_t        ast_ani_ofdmon; /* ANI OFDM weak signal detect on */
           uint32_t        ast_ani_ofdmoff;/* ANI OFDM weak signal detect off */
           uint32_t        ast_ani_cckhigh;/* ANI CCK weak signal threshold high */
           uint32_t        ast_ani_ccklow; /* ANI CCK weak signal threshold low */
           uint32_t        ast_ani_stepup; /* ANI increased first step level */
           uint32_t        ast_ani_stepdown;/* ANI decreased first step level */
           uint32_t        ast_ani_ofdmerrs;/* ANI cumulative ofdm phy err count */
           uint32_t        ast_ani_cckerrs;/* ANI cumulative cck phy err count */
           uint32_t        ast_ani_reset;  /* ANI parameters zero'd for non-STA */
           uint32_t        ast_ani_lzero;  /* ANI listen time forced to zero */
           uint32_t        ast_ani_lneg;   /* ANI listen time calculated < 0 */
           HAL_MIB_STATS   ast_mibstats;   /* MIB counter stats */
           HAL_NODE_STATS  ast_nodestats;  /* Latest rssi stats from driver */
   } HAL_ANI_STATS;
   
   typedef struct {
           uint8_t         noiseImmunityLevel; /* Global for pre-AR9380; OFDM later*/
           uint8_t         cckNoiseImmunityLevel; /* AR9380: CCK specific NI */
           uint8_t         spurImmunityLevel;
           uint8_t         firstepLevel;
           uint8_t         ofdmWeakSigDetectOff;
           uint8_t         cckWeakSigThreshold;
           uint8_t         mrcCck;         /* MRC CCK is enabled */
           uint32_t        listenTime;
   
           /* NB: intentionally ordered so data exported to user space is first */
           uint32_t        txFrameCount;   /* Last txFrameCount */
           uint32_t        rxFrameCount;   /* Last rx Frame count */
           uint32_t        cycleCount;     /* Last cycleCount
                                              (to detect wrap-around) */
           uint32_t        ofdmPhyErrCount;/* OFDM err count since last reset */
           uint32_t        cckPhyErrCount; /* CCK err count since last reset */
   } HAL_ANI_STATE;
   
   struct ath_desc;
   struct ath_tx_status;
   struct ath_rx_status;
   struct ieee80211_channel;
   
   /*
    * This is a channel survey sample entry.
    *
    * The AR5212 ANI routines fill these samples. The ANI code then uses it
    * when calculating listen time; it is also exported via a diagnostic
    * API.
    */
   typedef struct {
           uint32_t        seq_num;
           uint32_t        tx_busy;
           uint32_t        rx_busy;
           uint32_t        chan_busy;
           uint32_t        ext_chan_busy;
           uint32_t        cycle_count;
           /* XXX TODO */
           uint32_t        ofdm_phyerr_count;
           uint32_t        cck_phyerr_count;
   } HAL_SURVEY_SAMPLE;
   
   /*
    * This provides 3.2 seconds of sample space given an
    * ANI time of 1/10th of a second. This may not be enough!
    */
   #define CHANNEL_SURVEY_SAMPLE_COUNT     32
   
   typedef struct {
           HAL_SURVEY_SAMPLE samples[CHANNEL_SURVEY_SAMPLE_COUNT];
           uint32_t cur_sample;    /* current sample in sequence */
           uint32_t cur_seq;       /* current sequence number */
   } HAL_CHANNEL_SURVEY;
   
   /*
    * ANI commands.
    *
    * These are used both internally and externally via the diagnostic
    * API.
    *
    * Note that this is NOT the ANI commands being used via the INTMIT
    * capability - that has a different mapping for some reason.
    */
   typedef enum {
           HAL_ANI_PRESENT = 0,                    /* is ANI support present */
           HAL_ANI_NOISE_IMMUNITY_LEVEL = 1,       /* set level (global or ofdm) */
           HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION = 2, /* enable/disable */
           HAL_ANI_CCK_WEAK_SIGNAL_THR = 3,        /* enable/disable */
           HAL_ANI_FIRSTEP_LEVEL = 4,              /* set level */
           HAL_ANI_SPUR_IMMUNITY_LEVEL = 5,        /* set level */
           HAL_ANI_MODE = 6,                       /* 0 => manual, 1 => auto (XXX do not change) */
           HAL_ANI_PHYERR_RESET = 7,               /* reset phy error stats */
           HAL_ANI_MRC_CCK = 8,
           HAL_ANI_CCK_NOISE_IMMUNITY_LEVEL = 9,   /* set level (cck) */
   } HAL_ANI_CMD;
   
   #define HAL_ANI_ALL             0xffffffff
   
   /*
    * This is the layout of the ANI INTMIT capability.
    *
    * Notice that the command values differ to HAL_ANI_CMD.
    */
   typedef enum {
           HAL_CAP_INTMIT_PRESENT = 0,
           HAL_CAP_INTMIT_ENABLE = 1,
           HAL_CAP_INTMIT_NOISE_IMMUNITY_LEVEL = 2,
           HAL_CAP_INTMIT_OFDM_WEAK_SIGNAL_LEVEL = 3,
           HAL_CAP_INTMIT_CCK_WEAK_SIGNAL_THR = 4,
           HAL_CAP_INTMIT_FIRSTEP_LEVEL = 5,
           HAL_CAP_INTMIT_SPUR_IMMUNITY_LEVEL = 6
   } HAL_CAP_INTMIT_CMD;
   
  typedef struct {
          int32_t         pe_firpwr;      /* FIR pwr out threshold */
          int32_t         pe_rrssi;       /* Radar rssi thresh */
          int32_t         pe_height;      /* Pulse height thresh */
          int32_t         pe_prssi;       /* Pulse rssi thresh */
          int32_t         pe_inband;      /* Inband thresh */
  
          /* The following params are only for AR5413 and later */
          u_int32_t       pe_relpwr;      /* Relative power threshold in 0.5dB steps */
          u_int32_t       pe_relstep;     /* Pulse Relative step threshold in 0.5dB steps */
          u_int32_t       pe_maxlen;      /* Max length of radar sign in 0.8us units */
          int32_t         pe_usefir128;   /* Use the average in-band power measured over 128 cycles */
          int32_t         pe_blockradar;  /*
                                           * Enable to block radar check if pkt detect is done via OFDM
                                           * weak signal detect or pkt is detected immediately after tx
                                           * to rx transition
                                           */
          int32_t         pe_enmaxrssi;   /*
                                           * Enable to use the max rssi instead of the last rssi during
                                           * fine gain changes for radar detection
                                           */
          int32_t         pe_extchannel;  /* Enable DFS on ext channel */
          int32_t         pe_enabled;     /* Whether radar detection is enabled */
          int32_t         pe_enrelpwr;
          int32_t         pe_en_relstep_check;
  } HAL_PHYERR_PARAM;
  
  #define HAL_PHYERR_PARAM_NOVAL  65535
  
  typedef struct {
          u_int16_t       ss_fft_period;  /* Skip interval for FFT reports */
          u_int16_t       ss_period;      /* Spectral scan period */
          u_int16_t       ss_count;       /* # of reports to return from ss_active */
          u_int16_t       ss_short_report;/* Set to report only 1 set of FFT results */
          u_int8_t        radar_bin_thresh_sel;   /* strong signal radar FFT threshold configuration */
          u_int16_t       ss_spectral_pri;                /* are we doing a noise power cal ? */
          int8_t          ss_nf_cal[AH_MAX_CHAINS*2];     /* nf calibrated values for ctl+ext from eeprom */
          int8_t          ss_nf_pwr[AH_MAX_CHAINS*2];     /* nf pwr values for ctl+ext from eeprom */
          int32_t         ss_nf_temp_data;        /* temperature data taken during nf scan */
          int             ss_enabled;
          int             ss_active;
  } HAL_SPECTRAL_PARAM;
  #define HAL_SPECTRAL_PARAM_NOVAL        0xFFFF
  #define HAL_SPECTRAL_PARAM_ENABLE       0x8000  /* Enable/Disable if applicable */
  
  /*
   * DFS operating mode flags.
   */
  typedef enum {
          HAL_DFS_UNINIT_DOMAIN   = 0,    /* Uninitialized dfs domain */
          HAL_DFS_FCC_DOMAIN      = 1,    /* FCC3 dfs domain */
          HAL_DFS_ETSI_DOMAIN     = 2,    /* ETSI dfs domain */
          HAL_DFS_MKK4_DOMAIN     = 3,    /* Japan dfs domain */
  } HAL_DFS_DOMAIN;
  
  /*
   * MFP decryption options for initializing the MAC.
   */
  typedef enum {
          HAL_MFP_QOSDATA = 0,    /* Decrypt MFP frames like QoS data frames. All chips before Merlin. */
          HAL_MFP_PASSTHRU,       /* Don't decrypt MFP frames at all. Passthrough */
          HAL_MFP_HW_CRYPTO       /* hardware decryption enabled. Merlin can do it. */
  } HAL_MFP_OPT_T;
  
  /* LNA config supported */
  typedef enum {
          HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2        = 0,
          HAL_ANT_DIV_COMB_LNA2                   = 1,
          HAL_ANT_DIV_COMB_LNA1                   = 2,
          HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2         = 3,
  } HAL_ANT_DIV_COMB_LNA_CONF;
  
  typedef struct {
          u_int8_t        main_lna_conf;
          u_int8_t        alt_lna_conf;
          u_int8_t        fast_div_bias;
          u_int8_t        main_gaintb;
          u_int8_t        alt_gaintb;
          u_int8_t        antdiv_configgroup;
          int8_t          lna1_lna2_delta;
  } HAL_ANT_COMB_CONFIG;
  
  #define DEFAULT_ANTDIV_CONFIG_GROUP     0x00
  #define HAL_ANTDIV_CONFIG_GROUP_1       0x01
  #define HAL_ANTDIV_CONFIG_GROUP_2       0x02
  #define HAL_ANTDIV_CONFIG_GROUP_3       0x03
  
  /*
   * Flag for setting QUIET period
   */
  typedef enum {
          HAL_QUIET_DISABLE               = 0x0,
          HAL_QUIET_ENABLE                = 0x1,
          HAL_QUIET_ADD_CURRENT_TSF       = 0x2,  /* add current TSF to next_start offset */
          HAL_QUIET_ADD_SWBA_RESP_TIME    = 0x4,  /* add beacon response time to next_start offset */
  } HAL_QUIET_FLAG;
  
  #define HAL_DFS_EVENT_PRICH             0x0000001
  #define HAL_DFS_EVENT_EXTCH             0x0000002
  #define HAL_DFS_EVENT_EXTEARLY          0x0000004
  #define HAL_DFS_EVENT_ISDC              0x0000008
  
  struct hal_dfs_event {
          uint64_t        re_full_ts;     /* 64-bit full timestamp from interrupt time */
          uint32_t        re_ts;          /* Original 15 bit recv timestamp */
          uint8_t         re_rssi;        /* rssi of radar event */
          uint8_t         re_dur;         /* duration of radar pulse */
          uint32_t        re_flags;       /* Flags (see above) */
  };
  typedef struct hal_dfs_event HAL_DFS_EVENT;
  
  /*
   * Generic Timer domain
   */
  typedef enum {
          HAL_GEN_TIMER_TSF = 0,
          HAL_GEN_TIMER_TSF2,
          HAL_GEN_TIMER_TSF_ANY
  } HAL_GEN_TIMER_DOMAIN;
  
  /*
   * BT Co-existence definitions
   */
  #include "ath_hal/ah_btcoex.h"
  
  struct hal_bb_panic_info {
          u_int32_t       status;
          u_int32_t       tsf;
          u_int32_t       phy_panic_wd_ctl1;
          u_int32_t       phy_panic_wd_ctl2;
          u_int32_t       phy_gen_ctrl;
          u_int32_t       rxc_pcnt;
          u_int32_t       rxf_pcnt;
          u_int32_t       txf_pcnt;
          u_int32_t       cycles;
          u_int32_t       wd;
          u_int32_t       det;
          u_int32_t       rdar;
          u_int32_t       r_odfm;
          u_int32_t       r_cck;
          u_int32_t       t_odfm;
          u_int32_t       t_cck;
          u_int32_t       agc;
          u_int32_t       src;
  };
  
  /* Serialize Register Access Mode */
  typedef enum {
          SER_REG_MODE_OFF        = 0,
          SER_REG_MODE_ON         = 1,
          SER_REG_MODE_AUTO       = 2,
  } SER_REG_MODE;
  
  typedef struct
  {
          int ah_debug;                   /* only used if AH_DEBUG is defined */
          int ah_ar5416_biasadj;          /* enable AR2133 radio specific bias fiddling */
  
          /* NB: these are deprecated; they exist for now for compatibility */
          int ah_dma_beacon_response_time;/* in TU's */
          int ah_sw_beacon_response_time; /* in TU's */
          int ah_additional_swba_backoff; /* in TU's */
          int ah_force_full_reset;        /* force full chip reset rather then warm reset */
          int ah_serialise_reg_war;       /* force serialisation of register IO */
  
          /* XXX these don't belong here, they're just for the ar9300  HAL port effort */
          int ath_hal_desc_tpc;           /* Per-packet TPC */
          int ath_hal_sta_update_tx_pwr_enable;   /* GreenTX */
          int ath_hal_sta_update_tx_pwr_enable_S1;        /* GreenTX */
          int ath_hal_sta_update_tx_pwr_enable_S2;        /* GreenTX */
          int ath_hal_sta_update_tx_pwr_enable_S3;        /* GreenTX */
  
          /* I'm not sure what the default values for these should be */
          int ath_hal_pll_pwr_save;
          int ath_hal_pcie_power_save_enable;
          int ath_hal_intr_mitigation_rx;
          int ath_hal_intr_mitigation_tx;
  
          int ath_hal_pcie_clock_req;
  #define AR_PCIE_PLL_PWRSAVE_CONTROL     (1<<0)
  #define AR_PCIE_PLL_PWRSAVE_ON_D3       (1<<1)
  #define AR_PCIE_PLL_PWRSAVE_ON_D0       (1<<2)
  
          int ath_hal_pcie_waen;
          int ath_hal_pcie_ser_des_write;
  
          /* these are important for correct AR9300 behaviour */
          int ath_hal_ht_enable;          /* needs to be enabled for AR9300 HT */
          int ath_hal_diversity_control;
          int ath_hal_antenna_switch_swap;
          int ath_hal_ext_lna_ctl_gpio;
          int ath_hal_spur_mode;
          int ath_hal_6mb_ack;            /* should set this to 1 for 11a/11na? */
          int ath_hal_enable_msi;         /* enable MSI interrupts (needed?) */
          int ath_hal_beacon_filter_interval;     /* ok to be 0 for now? */
  
          /* For now, set this to 0 - net80211 needs to know about hardware MFP support */
          int ath_hal_mfp_support;
  
          int ath_hal_enable_ani; /* should set this.. */
          int ath_hal_cwm_ignore_ext_cca;
          int ath_hal_show_bb_panic;
          int ath_hal_ant_ctrl_comm2g_switch_enable;
          int ath_hal_ext_atten_margin_cfg;
          int ath_hal_min_gainidx;
          int ath_hal_war70c;
          uint32_t ath_hal_mci_config;
  } HAL_OPS_CONFIG;
  
  /*
   * Hardware Access Layer (HAL) API.
   *
   * Clients of the HAL call ath_hal_attach to obtain a reference to an
   * ath_hal structure for use with the device.  Hardware-related operations
   * that follow must call back into the HAL through interface, supplying
   * the reference as the first parameter.  Note that before using the
   * reference returned by ath_hal_attach the caller should verify the
   * ABI version number.
   */
  struct ath_hal {
          uint32_t        ah_magic;       /* consistency check magic number */
          uint16_t        ah_devid;       /* PCI device ID */
          uint16_t        ah_subvendorid; /* PCI subvendor ID */
          HAL_SOFTC       ah_sc;          /* back pointer to driver/os state */
          HAL_BUS_TAG     ah_st;          /* params for register r+w */
          HAL_BUS_HANDLE  ah_sh;
          HAL_CTRY_CODE   ah_countryCode;
  
          uint32_t        ah_macVersion;  /* MAC version id */
          uint16_t        ah_macRev;      /* MAC revision */
          uint16_t        ah_phyRev;      /* PHY revision */
          /* NB: when only one radio is present the rev is in 5Ghz */
          uint16_t        ah_analog5GhzRev;/* 5GHz radio revision */
          uint16_t        ah_analog2GhzRev;/* 2GHz radio revision */
  
          uint16_t        *ah_eepromdata; /* eeprom buffer, if needed */
  
          uint32_t        ah_intrstate[8];        /* last int state */
          uint32_t        ah_syncstate;           /* last sync intr state */
  
          /* Current powerstate from HAL calls */
          HAL_POWER_MODE  ah_powerMode;
  
          HAL_OPS_CONFIG ah_config;
          const HAL_RATE_TABLE *__ahdecl(*ah_getRateTable)(struct ath_hal *,
                                  u_int mode);
          void      __ahdecl(*ah_detach)(struct ath_hal*);
  
          /* Reset functions */
          HAL_BOOL  __ahdecl(*ah_reset)(struct ath_hal *, HAL_OPMODE,
                                  struct ieee80211_channel *,
                                  HAL_BOOL bChannelChange,
                                  HAL_RESET_TYPE resetType,
                                  HAL_STATUS *status);
          HAL_BOOL  __ahdecl(*ah_phyDisable)(struct ath_hal *);
          HAL_BOOL  __ahdecl(*ah_disable)(struct ath_hal *);
          void      __ahdecl(*ah_configPCIE)(struct ath_hal *, HAL_BOOL restore,
                                  HAL_BOOL power_off);
          void      __ahdecl(*ah_disablePCIE)(struct ath_hal *);
          void      __ahdecl(*ah_setPCUConfig)(struct ath_hal *);
          HAL_BOOL  __ahdecl(*ah_perCalibration)(struct ath_hal*,
                          struct ieee80211_channel *, HAL_BOOL *);
          HAL_BOOL  __ahdecl(*ah_perCalibrationN)(struct ath_hal *,
                          struct ieee80211_channel *, u_int chainMask,
                          HAL_BOOL longCal, HAL_BOOL *isCalDone);
          HAL_BOOL  __ahdecl(*ah_resetCalValid)(struct ath_hal *,
                          const struct ieee80211_channel *);
          HAL_BOOL  __ahdecl(*ah_setTxPower)(struct ath_hal *,
                          const struct ieee80211_channel *, uint16_t *);
          HAL_BOOL  __ahdecl(*ah_setTxPowerLimit)(struct ath_hal *, uint32_t);
          HAL_BOOL  __ahdecl(*ah_setBoardValues)(struct ath_hal *,
                          const struct ieee80211_channel *);
  
          /* Transmit functions */
          HAL_BOOL  __ahdecl(*ah_updateTxTrigLevel)(struct ath_hal*,
                                  HAL_BOOL incTrigLevel);
          int       __ahdecl(*ah_setupTxQueue)(struct ath_hal *, HAL_TX_QUEUE,
                                  const HAL_TXQ_INFO *qInfo);
          HAL_BOOL  __ahdecl(*ah_setTxQueueProps)(struct ath_hal *, int q, 
                                  const HAL_TXQ_INFO *qInfo);
          HAL_BOOL  __ahdecl(*ah_getTxQueueProps)(struct ath_hal *, int q, 
                                  HAL_TXQ_INFO *qInfo);
          HAL_BOOL  __ahdecl(*ah_releaseTxQueue)(struct ath_hal *ah, u_int q);
          HAL_BOOL  __ahdecl(*ah_resetTxQueue)(struct ath_hal *ah, u_int q);
          uint32_t __ahdecl(*ah_getTxDP)(struct ath_hal*, u_int);
          HAL_BOOL  __ahdecl(*ah_setTxDP)(struct ath_hal*, u_int, uint32_t txdp);
          uint32_t __ahdecl(*ah_numTxPending)(struct ath_hal *, u_int q);
          HAL_BOOL  __ahdecl(*ah_startTxDma)(struct ath_hal*, u_int);
          HAL_BOOL  __ahdecl(*ah_stopTxDma)(struct ath_hal*, u_int);
          HAL_BOOL  __ahdecl(*ah_setupTxDesc)(struct ath_hal *, struct ath_desc *,
                                  u_int pktLen, u_int hdrLen,
                                  HAL_PKT_TYPE type, u_int txPower,
                                  u_int txRate0, u_int txTries0,
                                  u_int keyIx, u_int antMode, u_int flags,
                                  u_int rtsctsRate, u_int rtsctsDuration,
                                  u_int compicvLen, u_int compivLen,
                                  u_int comp);
          HAL_BOOL  __ahdecl(*ah_setupXTxDesc)(struct ath_hal *, struct ath_desc*,
                                  u_int txRate1, u_int txTries1,
                                  u_int txRate2, u_int txTries2,
                                  u_int txRate3, u_int txTries3);
          HAL_BOOL  __ahdecl(*ah_fillTxDesc)(struct ath_hal *, struct ath_desc *,
                                  HAL_DMA_ADDR *bufAddrList, uint32_t *segLenList,
                                  u_int descId, u_int qcuId, HAL_BOOL firstSeg,
                                  HAL_BOOL lastSeg, const struct ath_desc *);
          HAL_STATUS __ahdecl(*ah_procTxDesc)(struct ath_hal *,
                                  struct ath_desc *, struct ath_tx_status *);
          void       __ahdecl(*ah_getTxIntrQueue)(struct ath_hal *, uint32_t *);
          void       __ahdecl(*ah_reqTxIntrDesc)(struct ath_hal *, struct ath_desc*);
          HAL_BOOL        __ahdecl(*ah_getTxCompletionRates)(struct ath_hal *,
                                  const struct ath_desc *ds, int *rates, int *tries);
          void      __ahdecl(*ah_setTxDescLink)(struct ath_hal *ah, void *ds,
                                  uint32_t link);
          void      __ahdecl(*ah_getTxDescLink)(struct ath_hal *ah, void *ds,
                                  uint32_t *link);
          void      __ahdecl(*ah_getTxDescLinkPtr)(struct ath_hal *ah, void *ds,
                                  uint32_t **linkptr);
          void      __ahdecl(*ah_setupTxStatusRing)(struct ath_hal *,
                                  void *ts_start, uint32_t ts_paddr_start,
                                  uint16_t size);
          void      __ahdecl(*ah_getTxRawTxDesc)(struct ath_hal *, u_int32_t *);
  
          /* Receive Functions */
          uint32_t __ahdecl(*ah_getRxDP)(struct ath_hal*, HAL_RX_QUEUE);
          void      __ahdecl(*ah_setRxDP)(struct ath_hal*, uint32_t rxdp, HAL_RX_QUEUE);
          void      __ahdecl(*ah_enableReceive)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_stopDmaReceive)(struct ath_hal*);
          void      __ahdecl(*ah_startPcuReceive)(struct ath_hal*, HAL_BOOL);
          void      __ahdecl(*ah_stopPcuReceive)(struct ath_hal*);
          void      __ahdecl(*ah_setMulticastFilter)(struct ath_hal*,
                                  uint32_t filter0, uint32_t filter1);
          HAL_BOOL  __ahdecl(*ah_setMulticastFilterIndex)(struct ath_hal*,
                                  uint32_t index);
          HAL_BOOL  __ahdecl(*ah_clrMulticastFilterIndex)(struct ath_hal*,
                                  uint32_t index);
          uint32_t __ahdecl(*ah_getRxFilter)(struct ath_hal*);
          void      __ahdecl(*ah_setRxFilter)(struct ath_hal*, uint32_t);
          HAL_BOOL  __ahdecl(*ah_setupRxDesc)(struct ath_hal *, struct ath_desc *,
                                  uint32_t size, u_int flags);
          HAL_STATUS __ahdecl(*ah_procRxDesc)(struct ath_hal *,
                                  struct ath_desc *, uint32_t phyAddr,
                                  struct ath_desc *next, uint64_t tsf,
                                  struct ath_rx_status *);
          void      __ahdecl(*ah_rxMonitor)(struct ath_hal *,
                                  const HAL_NODE_STATS *,
                                  const struct ieee80211_channel *);
          void      __ahdecl(*ah_aniPoll)(struct ath_hal *,
                                  const struct ieee80211_channel *);
          void      __ahdecl(*ah_procMibEvent)(struct ath_hal *,
                                  const HAL_NODE_STATS *);
  
          /* Misc Functions */
          HAL_STATUS __ahdecl(*ah_getCapability)(struct ath_hal *,
                                  HAL_CAPABILITY_TYPE, uint32_t capability,
                                  uint32_t *result);
          HAL_BOOL   __ahdecl(*ah_setCapability)(struct ath_hal *,
                                  HAL_CAPABILITY_TYPE, uint32_t capability,
                                  uint32_t setting, HAL_STATUS *);
          HAL_BOOL   __ahdecl(*ah_getDiagState)(struct ath_hal *, int request,
                                  const void *args, uint32_t argsize,
                                  void **result, uint32_t *resultsize);
          void      __ahdecl(*ah_getMacAddress)(struct ath_hal *, uint8_t *);
          HAL_BOOL  __ahdecl(*ah_setMacAddress)(struct ath_hal *, const uint8_t*);
          void      __ahdecl(*ah_getBssIdMask)(struct ath_hal *, uint8_t *);
          HAL_BOOL  __ahdecl(*ah_setBssIdMask)(struct ath_hal *, const uint8_t*);
          HAL_BOOL  __ahdecl(*ah_setRegulatoryDomain)(struct ath_hal*,
                                  uint16_t, HAL_STATUS *);
          void      __ahdecl(*ah_setLedState)(struct ath_hal*, HAL_LED_STATE);
          void      __ahdecl(*ah_writeAssocid)(struct ath_hal*,
                                  const uint8_t *bssid, uint16_t assocId);
          HAL_BOOL  __ahdecl(*ah_gpioCfgOutput)(struct ath_hal *,
                                  uint32_t gpio, HAL_GPIO_MUX_TYPE);
          HAL_BOOL  __ahdecl(*ah_gpioCfgInput)(struct ath_hal *, uint32_t gpio);
          uint32_t __ahdecl(*ah_gpioGet)(struct ath_hal *, uint32_t gpio);
          HAL_BOOL  __ahdecl(*ah_gpioSet)(struct ath_hal *,
                                  uint32_t gpio, uint32_t val);
          void      __ahdecl(*ah_gpioSetIntr)(struct ath_hal*, u_int, uint32_t);
          uint32_t __ahdecl(*ah_getTsf32)(struct ath_hal*);
          uint64_t __ahdecl(*ah_getTsf64)(struct ath_hal*);
          void     __ahdecl(*ah_setTsf64)(struct ath_hal *, uint64_t);
          void      __ahdecl(*ah_resetTsf)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_detectCardPresent)(struct ath_hal*);
          void      __ahdecl(*ah_updateMibCounters)(struct ath_hal*,
                                  HAL_MIB_STATS*);
          HAL_RFGAIN __ahdecl(*ah_getRfGain)(struct ath_hal*);
          u_int     __ahdecl(*ah_getDefAntenna)(struct ath_hal*);
          void      __ahdecl(*ah_setDefAntenna)(struct ath_hal*, u_int);
          HAL_ANT_SETTING  __ahdecl(*ah_getAntennaSwitch)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setAntennaSwitch)(struct ath_hal*,
                                  HAL_ANT_SETTING);
          HAL_BOOL  __ahdecl(*ah_setSifsTime)(struct ath_hal*, u_int);
          u_int     __ahdecl(*ah_getSifsTime)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setSlotTime)(struct ath_hal*, u_int);
          u_int     __ahdecl(*ah_getSlotTime)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setAckTimeout)(struct ath_hal*, u_int);
          u_int     __ahdecl(*ah_getAckTimeout)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setAckCTSRate)(struct ath_hal*, u_int);
          u_int     __ahdecl(*ah_getAckCTSRate)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setCTSTimeout)(struct ath_hal*, u_int);
          u_int     __ahdecl(*ah_getCTSTimeout)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_setDecompMask)(struct ath_hal*, uint16_t, int);
          void      __ahdecl(*ah_setCoverageClass)(struct ath_hal*, uint8_t, int);
          HAL_STATUS      __ahdecl(*ah_setQuiet)(struct ath_hal *ah, uint32_t period,
                                  uint32_t duration, uint32_t nextStart,
                                  HAL_QUIET_FLAG flag);
          void      __ahdecl(*ah_setChainMasks)(struct ath_hal *,
                                  uint32_t, uint32_t);
          u_int     __ahdecl(*ah_getNav)(struct ath_hal*);
          void      __ahdecl(*ah_setNav)(struct ath_hal*, u_int);
  
          /* DFS functions */
          void      __ahdecl(*ah_enableDfs)(struct ath_hal *ah,
                                  HAL_PHYERR_PARAM *pe);
          void      __ahdecl(*ah_getDfsThresh)(struct ath_hal *ah,
                                  HAL_PHYERR_PARAM *pe);
          HAL_BOOL  __ahdecl(*ah_getDfsDefaultThresh)(struct ath_hal *ah,
                                  HAL_PHYERR_PARAM *pe);
          HAL_BOOL  __ahdecl(*ah_procRadarEvent)(struct ath_hal *ah,
                                  struct ath_rx_status *rxs, uint64_t fulltsf,
                                  const char *buf, HAL_DFS_EVENT *event);
          HAL_BOOL  __ahdecl(*ah_isFastClockEnabled)(struct ath_hal *ah);
          void      __ahdecl(*ah_setDfsCacTxQuiet)(struct ath_hal *, HAL_BOOL);
  
          /* Spectral Scan functions */
          void    __ahdecl(*ah_spectralConfigure)(struct ath_hal *ah,
                                  HAL_SPECTRAL_PARAM *sp);
          void    __ahdecl(*ah_spectralGetConfig)(struct ath_hal *ah,
                                  HAL_SPECTRAL_PARAM *sp);
          void    __ahdecl(*ah_spectralStart)(struct ath_hal *);
          void    __ahdecl(*ah_spectralStop)(struct ath_hal *);
          HAL_BOOL        __ahdecl(*ah_spectralIsEnabled)(struct ath_hal *);
          HAL_BOOL        __ahdecl(*ah_spectralIsActive)(struct ath_hal *);
          /* XXX getNfPri() and getNfExt() */
  
          /* Key Cache Functions */
          uint32_t __ahdecl(*ah_getKeyCacheSize)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_resetKeyCacheEntry)(struct ath_hal*, uint16_t);
          HAL_BOOL  __ahdecl(*ah_isKeyCacheEntryValid)(struct ath_hal *,
                                  uint16_t);
          HAL_BOOL  __ahdecl(*ah_setKeyCacheEntry)(struct ath_hal*,
                                  uint16_t, const HAL_KEYVAL *,
                                  const uint8_t *, int);
          HAL_BOOL  __ahdecl(*ah_setKeyCacheEntryMac)(struct ath_hal*,
                                  uint16_t, const uint8_t *);
  
          /* Power Management Functions */
          HAL_BOOL  __ahdecl(*ah_setPowerMode)(struct ath_hal*,
                                  HAL_POWER_MODE mode, int setChip);
          HAL_POWER_MODE __ahdecl(*ah_getPowerMode)(struct ath_hal*);
          int16_t   __ahdecl(*ah_getChanNoise)(struct ath_hal *,
                                  const struct ieee80211_channel *);
  
          /* Beacon Management Functions */
          void      __ahdecl(*ah_setBeaconTimers)(struct ath_hal*,
                                  const HAL_BEACON_TIMERS *);
          /* NB: deprecated, use ah_setBeaconTimers instead */
          void      __ahdecl(*ah_beaconInit)(struct ath_hal *,
                                  uint32_t nexttbtt, uint32_t intval);
          void      __ahdecl(*ah_setStationBeaconTimers)(struct ath_hal*,
                                  const HAL_BEACON_STATE *);
          void      __ahdecl(*ah_resetStationBeaconTimers)(struct ath_hal*);
          uint64_t  __ahdecl(*ah_getNextTBTT)(struct ath_hal *);
  
          /* 802.11n Functions */
          HAL_BOOL  __ahdecl(*ah_chainTxDesc)(struct ath_hal *,
                                  struct ath_desc *,
                                  HAL_DMA_ADDR *bufAddrList,
                                  uint32_t *segLenList,
                                  u_int, u_int, HAL_PKT_TYPE,
                                  u_int, HAL_CIPHER, uint8_t, HAL_BOOL,
                                  HAL_BOOL, HAL_BOOL);
          HAL_BOOL  __ahdecl(*ah_setupFirstTxDesc)(struct ath_hal *,
                                  struct ath_desc *, u_int, u_int, u_int,
                                  u_int, u_int, u_int, u_int, u_int);
          HAL_BOOL  __ahdecl(*ah_setupLastTxDesc)(struct ath_hal *,
                                  struct ath_desc *, const struct ath_desc *);
          void      __ahdecl(*ah_set11nRateScenario)(struct ath_hal *,
                                  struct ath_desc *, u_int, u_int,
                                  HAL_11N_RATE_SERIES [], u_int, u_int);
  
          /*
           * The next 4 (set11ntxdesc -> set11naggrlast) are specific
           * to the EDMA HAL.  Descriptors are chained together by
           * using filltxdesc (not ChainTxDesc) and then setting the
           * aggregate flags appropriately using first/middle/last.
           */
          void      __ahdecl(*ah_set11nTxDesc)(struct ath_hal *,
                                  void *, u_int, HAL_PKT_TYPE, u_int, u_int,
                                  u_int);
          void      __ahdecl(*ah_set11nAggrFirst)(struct ath_hal *,
                                  struct ath_desc *, u_int, u_int);
          void      __ahdecl(*ah_set11nAggrMiddle)(struct ath_hal *,
                                  struct ath_desc *, u_int);
          void      __ahdecl(*ah_set11nAggrLast)(struct ath_hal *,
                                  struct ath_desc *);
          void      __ahdecl(*ah_clr11nAggr)(struct ath_hal *,
                                  struct ath_desc *);
          void      __ahdecl(*ah_set11nBurstDuration)(struct ath_hal *,
                                  struct ath_desc *, u_int);
          void      __ahdecl(*ah_set11nVirtMoreFrag)(struct ath_hal *,
                                  struct ath_desc *, u_int);
  
          HAL_BOOL  __ahdecl(*ah_getMibCycleCounts) (struct ath_hal *,
                                  HAL_SURVEY_SAMPLE *);
  
          uint32_t  __ahdecl(*ah_get11nExtBusy)(struct ath_hal *);
          void      __ahdecl(*ah_set11nMac2040)(struct ath_hal *,
                                  HAL_HT_MACMODE);
          HAL_HT_RXCLEAR __ahdecl(*ah_get11nRxClear)(struct ath_hal *ah);
          void      __ahdecl(*ah_set11nRxClear)(struct ath_hal *,
                                  HAL_HT_RXCLEAR);
  
          /* Interrupt functions */
          HAL_BOOL  __ahdecl(*ah_isInterruptPending)(struct ath_hal*);
          HAL_BOOL  __ahdecl(*ah_getPendingInterrupts)(struct ath_hal*, HAL_INT*);
          HAL_INT   __ahdecl(*ah_getInterrupts)(struct ath_hal*);
          HAL_INT   __ahdecl(*ah_setInterrupts)(struct ath_hal*, HAL_INT);
  
          /* Bluetooth Coexistence functions */
          void        __ahdecl(*ah_btCoexSetInfo)(struct ath_hal *,
                                  HAL_BT_COEX_INFO *);
          void        __ahdecl(*ah_btCoexSetConfig)(struct ath_hal *,
                                  HAL_BT_COEX_CONFIG *);
          void        __ahdecl(*ah_btCoexSetQcuThresh)(struct ath_hal *,
                                  int);
          void        __ahdecl(*ah_btCoexSetWeights)(struct ath_hal *,
                                  uint32_t);
          void        __ahdecl(*ah_btCoexSetBmissThresh)(struct ath_hal *,
                                  uint32_t);
          void        __ahdecl(*ah_btCoexSetParameter)(struct ath_hal *,
                                  uint32_t, uint32_t);
          void        __ahdecl(*ah_btCoexDisable)(struct ath_hal *);
          int         __ahdecl(*ah_btCoexEnable)(struct ath_hal *);
  
          /* Bluetooth MCI methods */
          void        __ahdecl(*ah_btMciSetup)(struct ath_hal *,
                                  uint32_t, void *, uint16_t, uint32_t);
          HAL_BOOL    __ahdecl(*ah_btMciSendMessage)(struct ath_hal *,
                                  uint8_t, uint32_t, uint32_t *, uint8_t,
                                  HAL_BOOL, HAL_BOOL);
          uint32_t    __ahdecl(*ah_btMciGetInterrupt)(struct ath_hal *,
                                  uint32_t *, uint32_t *);
          uint32_t    __ahdecl(*ah_btMciState)(struct ath_hal *,
                                  uint32_t, uint32_t *);
          void        __ahdecl(*ah_btMciDetach)(struct ath_hal *);
  
          /* LNA diversity configuration */
          void        __ahdecl(*ah_divLnaConfGet)(struct ath_hal *,
                                  HAL_ANT_COMB_CONFIG *);
          void        __ahdecl(*ah_divLnaConfSet)(struct ath_hal *,
                                  HAL_ANT_COMB_CONFIG *);
  };
  
  /* 
   * Check the PCI vendor ID and device ID against Atheros' values
   * and return a printable description for any Atheros hardware.
   * AH_NULL is returned if the ID's do not describe Atheros hardware.
   */
  extern  const char *__ahdecl ath_hal_probe(uint16_t vendorid, uint16_t devid);
  
  /*
   * Attach the HAL for use with the specified device.  The device is
   * defined by the PCI device ID.  The caller provides an opaque pointer
   * to an upper-layer data structure (HAL_SOFTC) that is stored in the
   * HAL state block for later use.  Hardware register accesses are done
   * using the specified bus tag and handle.  On successful return a
   * reference to a state block is returned that must be supplied in all
   * subsequent HAL calls.  Storage associated with this reference is
   * dynamically allocated and must be freed by calling the ah_detach
   * method when the client is done.  If the attach operation fails a
   * null (AH_NULL) reference will be returned and a status code will
   * be returned if the status parameter is non-zero.
   */
  extern  struct ath_hal * __ahdecl ath_hal_attach(uint16_t devid, HAL_SOFTC,
                  HAL_BUS_TAG, HAL_BUS_HANDLE, uint16_t *eepromdata,
                  HAL_OPS_CONFIG *ah_config, HAL_STATUS* status);
  
  extern  const char *ath_hal_mac_name(struct ath_hal *);
  extern  const char *ath_hal_rf_name(struct ath_hal *);
  
  /*
   * Regulatory interfaces.  Drivers should use ath_hal_init_channels to
   * request a set of channels for a particular country code and/or
   * regulatory domain.  If CTRY_DEFAULT and SKU_NONE are specified then
   * this list is constructed according to the contents of the EEPROM.
   * ath_hal_getchannels acts similarly but does not alter the operating
   * state; this can be used to collect information for a particular
   * regulatory configuration.  Finally ath_hal_set_channels installs a
   * channel list constructed outside the driver.  The HAL will adopt the
   * channel list and setup internal state according to the specified
   * regulatory configuration (e.g. conformance test limits).
   *
   * For all interfaces the channel list is returned in the supplied array.
   * maxchans defines the maximum size of this array.  nchans contains the
   * actual number of channels returned.  If a problem occurred then a
   * status code != HAL_OK is returned.
   */
  struct ieee80211_channel;
  
  /*
   * Return a list of channels according to the specified regulatory.
   */
  extern  HAL_STATUS __ahdecl ath_hal_getchannels(struct ath_hal *,
      struct ieee80211_channel *chans, u_int maxchans, int *nchans,
      u_int modeSelect, HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn,
      HAL_BOOL enableExtendedChannels);
  
  /*
   * Return a list of channels and install it as the current operating
   * regulatory list.
   */
  extern  HAL_STATUS __ahdecl ath_hal_init_channels(struct ath_hal *,
      struct ieee80211_channel *chans, u_int maxchans, int *nchans,
      u_int modeSelect, HAL_CTRY_CODE cc, HAL_REG_DOMAIN rd,
      HAL_BOOL enableExtendedChannels);
  
  /*
   * Install the list of channels as the current operating regulatory
   * and setup related state according to the country code and sku.
   */
  extern  HAL_STATUS __ahdecl ath_hal_set_channels(struct ath_hal *,
      struct ieee80211_channel *chans, int nchans,
      HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn);
  
  /*
   * Fetch the ctl/ext noise floor values reported by a MIMO
   * radio. Returns 1 for valid results, 0 for invalid channel.
   */
  extern int __ahdecl ath_hal_get_mimo_chan_noise(struct ath_hal *ah,
      const struct ieee80211_channel *chan, int16_t *nf_ctl,
      int16_t *nf_ext);
  
  /*
   * Calibrate noise floor data following a channel scan or similar.
   * This must be called prior retrieving noise floor data.
   */
  extern  void __ahdecl ath_hal_process_noisefloor(struct ath_hal *ah);
  
  /*
   * Return bit mask of wireless modes supported by the hardware.
   */
  extern  u_int __ahdecl ath_hal_getwirelessmodes(struct ath_hal*);
  
  /*
   * Get the HAL wireless mode for the given channel.
   */
  extern  int ath_hal_get_curmode(struct ath_hal *ah,
      const struct ieee80211_channel *chan);
  
  /*
   * Calculate the packet TX time for a legacy or 11n frame
   */
  extern uint32_t __ahdecl ath_hal_pkt_txtime(struct ath_hal *ah,
      const HAL_RATE_TABLE *rates, uint32_t frameLen,
      uint16_t rateix, HAL_BOOL isht40, HAL_BOOL shortPreamble,
      HAL_BOOL includeSifs);
  
  /*
   * Calculate the duration of an 11n frame.
   */
  extern uint32_t __ahdecl ath_computedur_ht(uint32_t frameLen, uint16_t rate,
      int streams, HAL_BOOL isht40, HAL_BOOL isShortGI);
  
  /*
   * Calculate the transmit duration of a legacy frame.
   */
  extern uint16_t __ahdecl ath_hal_computetxtime(struct ath_hal *,
                  const HAL_RATE_TABLE *rates, uint32_t frameLen,
                  uint16_t rateix, HAL_BOOL shortPreamble,
                  HAL_BOOL includeSifs);
  
  /*
   * Adjust the TSF.
   */
  extern void __ahdecl ath_hal_adjusttsf(struct ath_hal *ah, int32_t tsfdelta);
  
  /*
   * Enable or disable CCA.
   */
  void __ahdecl ath_hal_setcca(struct ath_hal *ah, int ena);
  
  /*
   * Get CCA setting.
   */
  int __ahdecl ath_hal_getcca(struct ath_hal *ah);
  
  /*
   * Enable/disable and get self-gen frame (ACK, CTS) for CAC.
   */
  void __ahdecl ath_hal_set_dfs_cac_tx_quiet(struct ath_hal *ah, HAL_BOOL ena);
  
  /*
   * Read EEPROM data from ah_eepromdata
   */
  HAL_BOOL __ahdecl ath_hal_EepromDataRead(struct ath_hal *ah,
                  u_int off, uint16_t *data);
  
  /*
   * For now, simply pass through MFP frames.
   */
  static inline u_int32_t
  ath_hal_get_mfp_qos(struct ath_hal *ah)
  {
          //return AH_PRIVATE(ah)->ah_mfp_qos;
          return HAL_MFP_QOSDATA;
  }
  
  /*
   * Convert between microseconds and core system clocks.
   */
  extern u_int ath_hal_mac_clks(struct ath_hal *ah, u_int usecs);
  extern u_int ath_hal_mac_usec(struct ath_hal *ah, u_int clks);
  extern uint64_t ath_hal_mac_psec(struct ath_hal *ah, u_int clks);
  
  #endif /* _ATH_AH_H_ */

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