/* * 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. * * $FreeBSD$ */ #include "opt_ah.h" #include "ah.h" #include "ah_internal.h" #include "ah_devid.h" #include "ah_eeprom.h" /* for 5ghz fast clock flag */ #include "ar5416/ar5416reg.h" /* NB: includes ar5212reg.h */ /* linker set of registered chips */ OS_SET_DECLARE(ah_chips, struct ath_hal_chip); /* * Check the set of registered chips to see if any recognize * the device as one they can support. */ const char* ath_hal_probe(uint16_t vendorid, uint16_t devid) { struct ath_hal_chip * const *pchip; OS_SET_FOREACH(pchip, ah_chips) { const char *name = (*pchip)->probe(vendorid, devid); if (name != AH_NULL) return name; } return AH_NULL; } /* * Attach detects device chip revisions, initializes the hwLayer * function list, reads EEPROM information, * selects reset vectors, and performs a short self test. * Any failures will return an error that should cause a hardware * disable. */ struct ath_hal* ath_hal_attach(uint16_t devid, HAL_SOFTC sc, HAL_BUS_TAG st, HAL_BUS_HANDLE sh, uint16_t *eepromdata, HAL_STATUS *error) { struct ath_hal_chip * const *pchip; OS_SET_FOREACH(pchip, ah_chips) { struct ath_hal_chip *chip = *pchip; struct ath_hal *ah; /* XXX don't have vendorid, assume atheros one works */ if (chip->probe(ATHEROS_VENDOR_ID, devid) == AH_NULL) continue; ah = chip->attach(devid, sc, st, sh, eepromdata, error); if (ah != AH_NULL) { /* copy back private state to public area */ ah->ah_devid = AH_PRIVATE(ah)->ah_devid; ah->ah_subvendorid = AH_PRIVATE(ah)->ah_subvendorid; ah->ah_macVersion = AH_PRIVATE(ah)->ah_macVersion; ah->ah_macRev = AH_PRIVATE(ah)->ah_macRev; ah->ah_phyRev = AH_PRIVATE(ah)->ah_phyRev; ah->ah_analog5GhzRev = AH_PRIVATE(ah)->ah_analog5GhzRev; ah->ah_analog2GhzRev = AH_PRIVATE(ah)->ah_analog2GhzRev; return ah; } } return AH_NULL; } const char * ath_hal_mac_name(struct ath_hal *ah) { switch (ah->ah_macVersion) { case AR_SREV_VERSION_CRETE: case AR_SREV_VERSION_MAUI_1: return "5210"; case AR_SREV_VERSION_MAUI_2: case AR_SREV_VERSION_OAHU: return "5211"; case AR_SREV_VERSION_VENICE: return "5212"; case AR_SREV_VERSION_GRIFFIN: return "2413"; case AR_SREV_VERSION_CONDOR: return "5424"; case AR_SREV_VERSION_EAGLE: return "5413"; case AR_SREV_VERSION_COBRA: return "2415"; case AR_SREV_2425: return "2425"; case AR_SREV_2417: return "2417"; case AR_XSREV_VERSION_OWL_PCI: return "5416"; case AR_XSREV_VERSION_OWL_PCIE: return "5418"; case AR_XSREV_VERSION_HOWL: return "9130"; case AR_XSREV_VERSION_SOWL: return "9160"; case AR_XSREV_VERSION_MERLIN: if (AH_PRIVATE(ah)->ah_ispcie) return "9280"; return "9220"; case AR_XSREV_VERSION_KITE: return "9285"; case AR_XSREV_VERSION_KIWI: if (AH_PRIVATE(ah)->ah_ispcie) return "9287"; return "9227"; } return "????"; } /* * Return the mask of available modes based on the hardware capabilities. */ u_int ath_hal_getwirelessmodes(struct ath_hal*ah) { return ath_hal_getWirelessModes(ah); } /* linker set of registered RF backends */ OS_SET_DECLARE(ah_rfs, struct ath_hal_rf); /* * Check the set of registered RF backends to see if * any recognize the device as one they can support. */ struct ath_hal_rf * ath_hal_rfprobe(struct ath_hal *ah, HAL_STATUS *ecode) { struct ath_hal_rf * const *prf; OS_SET_FOREACH(prf, ah_rfs) { struct ath_hal_rf *rf = *prf; if (rf->probe(ah)) return rf; } *ecode = HAL_ENOTSUPP; return AH_NULL; } const char * ath_hal_rf_name(struct ath_hal *ah) { switch (ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR) { case 0: /* 5210 */ return "5110"; /* NB: made up */ case AR_RAD5111_SREV_MAJOR: case AR_RAD5111_SREV_PROD: return "5111"; case AR_RAD2111_SREV_MAJOR: return "2111"; case AR_RAD5112_SREV_MAJOR: case AR_RAD5112_SREV_2_0: case AR_RAD5112_SREV_2_1: return "5112"; case AR_RAD2112_SREV_MAJOR: case AR_RAD2112_SREV_2_0: case AR_RAD2112_SREV_2_1: return "2112"; case AR_RAD2413_SREV_MAJOR: return "2413"; case AR_RAD5413_SREV_MAJOR: return "5413"; case AR_RAD2316_SREV_MAJOR: return "2316"; case AR_RAD2317_SREV_MAJOR: return "2317"; case AR_RAD5424_SREV_MAJOR: return "5424"; case AR_RAD5133_SREV_MAJOR: return "5133"; case AR_RAD2133_SREV_MAJOR: return "2133"; case AR_RAD5122_SREV_MAJOR: return "5122"; case AR_RAD2122_SREV_MAJOR: return "2122"; } return "????"; } /* * Poll the register looking for a specific value. */ HAL_BOOL ath_hal_wait(struct ath_hal *ah, u_int reg, uint32_t mask, uint32_t val) { #define AH_TIMEOUT 1000 return ath_hal_waitfor(ah, reg, mask, val, AH_TIMEOUT); #undef AH_TIMEOUT } HAL_BOOL ath_hal_waitfor(struct ath_hal *ah, u_int reg, uint32_t mask, uint32_t val, uint32_t timeout) { int i; for (i = 0; i < timeout; i++) { if ((OS_REG_READ(ah, reg) & mask) == val) return AH_TRUE; OS_DELAY(10); } HALDEBUG(ah, HAL_DEBUG_REGIO | HAL_DEBUG_PHYIO, "%s: timeout on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n", __func__, reg, OS_REG_READ(ah, reg), mask, val); return AH_FALSE; } /* * Reverse the bits starting at the low bit for a value of * bit_count in size */ uint32_t ath_hal_reverseBits(uint32_t val, uint32_t n) { uint32_t retval; int i; for (i = 0, retval = 0; i < n; i++) { retval = (retval << 1) | (val & 1); val >>= 1; } return retval; } /* 802.11n related timing definitions */ #define OFDM_PLCP_BITS 22 #define HT_L_STF 8 #define HT_L_LTF 8 #define HT_L_SIG 4 #define HT_SIG 8 #define HT_STF 4 #define HT_LTF(n) ((n) * 4) #define HT_RC_2_MCS(_rc) ((_rc) & 0xf) #define HT_RC_2_STREAMS(_rc) ((((_rc) & 0x78) >> 3) + 1) #define IS_HT_RATE(_rc) ( (_rc) & IEEE80211_RATE_MCS) /* * Calculate the duration of a packet whether it is 11n or legacy. */ uint32_t 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) { uint8_t rc; int numStreams; rc = rates->info[rateix].rateCode; /* Legacy rate? Return the old way */ if (! IS_HT_RATE(rc)) return ath_hal_computetxtime(ah, rates, frameLen, rateix, shortPreamble); /* 11n frame - extract out the number of spatial streams */ numStreams = HT_RC_2_STREAMS(rc); KASSERT(numStreams == 1 || numStreams == 2, ("number of spatial streams needs to be 1 or 2: MCS rate 0x%x!", rateix)); return ath_computedur_ht(frameLen, rc, numStreams, isht40, shortPreamble); } /* * Calculate the transmit duration of an 11n frame. * This only works for MCS0->MCS15. */ uint32_t ath_computedur_ht(uint32_t frameLen, uint16_t rate, int streams, HAL_BOOL isht40, HAL_BOOL isShortGI) { static const uint16_t ht20_bps[16] = { 26, 52, 78, 104, 156, 208, 234, 260, 52, 104, 156, 208, 312, 416, 468, 520 }; static const uint16_t ht40_bps[16] = { 54, 108, 162, 216, 324, 432, 486, 540, 108, 216, 324, 432, 648, 864, 972, 1080, }; uint32_t bitsPerSymbol, numBits, numSymbols, txTime; KASSERT(rate & IEEE80211_RATE_MCS, ("not mcs %d", rate)); KASSERT((rate &~ IEEE80211_RATE_MCS) < 16, ("bad mcs 0x%x", rate)); if (isht40) bitsPerSymbol = ht40_bps[rate & 0xf]; else bitsPerSymbol = ht20_bps[rate & 0xf]; numBits = OFDM_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); if (isShortGI) txTime = ((numSymbols * 18) + 4) / 5; /* 3.6us */ else txTime = numSymbols * 4; /* 4us */ return txTime + HT_L_STF + HT_L_LTF + HT_L_SIG + HT_SIG + HT_STF + HT_LTF(streams); } /* * Compute the time to transmit a frame of length frameLen bytes * using the specified rate, phy, and short preamble setting. */ uint16_t ath_hal_computetxtime(struct ath_hal *ah, const HAL_RATE_TABLE *rates, uint32_t frameLen, uint16_t rateix, HAL_BOOL shortPreamble) { uint32_t bitsPerSymbol, numBits, numSymbols, phyTime, txTime; uint32_t kbps; /* Warn if this function is called for 11n rates; it should not be! */ if (IS_HT_RATE(rates->info[rateix].rateCode)) ath_hal_printf(ah, "%s: MCS rate? (index %d; hwrate 0x%x)\n", __func__, rateix, rates->info[rateix].rateCode); kbps = rates->info[rateix].rateKbps; /* * index can be invalid duting dynamic Turbo transitions. * XXX */ if (kbps == 0) return 0; switch (rates->info[rateix].phy) { case IEEE80211_T_CCK: phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS; if (shortPreamble && rates->info[rateix].shortPreamble) phyTime >>= 1; numBits = frameLen << 3; txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000)/kbps); break; case IEEE80211_T_OFDM: bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = OFDM_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME + (numSymbols * OFDM_SYMBOL_TIME); break; case IEEE80211_T_OFDM_HALF: bitsPerSymbol = (kbps * OFDM_HALF_SYMBOL_TIME) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = OFDM_HALF_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = OFDM_HALF_SIFS_TIME + OFDM_HALF_PREAMBLE_TIME + (numSymbols * OFDM_HALF_SYMBOL_TIME); break; case IEEE80211_T_OFDM_QUARTER: bitsPerSymbol = (kbps * OFDM_QUARTER_SYMBOL_TIME) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = OFDM_QUARTER_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = OFDM_QUARTER_SIFS_TIME + OFDM_QUARTER_PREAMBLE_TIME + (numSymbols * OFDM_QUARTER_SYMBOL_TIME); break; case IEEE80211_T_TURBO: bitsPerSymbol = (kbps * TURBO_SYMBOL_TIME) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = TURBO_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = TURBO_SIFS_TIME + TURBO_PREAMBLE_TIME + (numSymbols * TURBO_SYMBOL_TIME); break; default: HALDEBUG(ah, HAL_DEBUG_PHYIO, "%s: unknown phy %u (rate ix %u)\n", __func__, rates->info[rateix].phy, rateix); txTime = 0; break; } return txTime; } typedef enum { WIRELESS_MODE_11a = 0, WIRELESS_MODE_TURBO = 1, WIRELESS_MODE_11b = 2, WIRELESS_MODE_11g = 3, WIRELESS_MODE_108g = 4, WIRELESS_MODE_MAX } WIRELESS_MODE; static WIRELESS_MODE ath_hal_chan2wmode(struct ath_hal *ah, const struct ieee80211_channel *chan) { if (IEEE80211_IS_CHAN_B(chan)) return WIRELESS_MODE_11b; if (IEEE80211_IS_CHAN_G(chan)) return WIRELESS_MODE_11g; if (IEEE80211_IS_CHAN_108G(chan)) return WIRELESS_MODE_108g; if (IEEE80211_IS_CHAN_TURBO(chan)) return WIRELESS_MODE_TURBO; return WIRELESS_MODE_11a; } /* * Convert between microseconds and core system clocks. */ /* 11a Turbo 11b 11g 108g */ static const uint8_t CLOCK_RATE[] = { 40, 80, 22, 44, 88 }; #define CLOCK_FAST_RATE_5GHZ_OFDM 44 u_int ath_hal_mac_clks(struct ath_hal *ah, u_int usecs) { const struct ieee80211_channel *c = AH_PRIVATE(ah)->ah_curchan; u_int clks; /* NB: ah_curchan may be null when called attach time */ /* XXX merlin and later specific workaround - 5ghz fast clock is 44 */ if (c != AH_NULL && IS_5GHZ_FAST_CLOCK_EN(ah, c)) { clks = usecs * CLOCK_FAST_RATE_5GHZ_OFDM; if (IEEE80211_IS_CHAN_HT40(c)) clks <<= 1; } else if (c != AH_NULL) { clks = usecs * CLOCK_RATE[ath_hal_chan2wmode(ah, c)]; if (IEEE80211_IS_CHAN_HT40(c)) clks <<= 1; } else clks = usecs * CLOCK_RATE[WIRELESS_MODE_11b]; return clks; } u_int ath_hal_mac_usec(struct ath_hal *ah, u_int clks) { const struct ieee80211_channel *c = AH_PRIVATE(ah)->ah_curchan; u_int usec; /* NB: ah_curchan may be null when called attach time */ /* XXX merlin and later specific workaround - 5ghz fast clock is 44 */ if (c != AH_NULL && IS_5GHZ_FAST_CLOCK_EN(ah, c)) { usec = clks / CLOCK_FAST_RATE_5GHZ_OFDM; if (IEEE80211_IS_CHAN_HT40(c)) usec >>= 1; } else if (c != AH_NULL) { usec = clks / CLOCK_RATE[ath_hal_chan2wmode(ah, c)]; if (IEEE80211_IS_CHAN_HT40(c)) usec >>= 1; } else usec = clks / CLOCK_RATE[WIRELESS_MODE_11b]; return usec; } /* * Setup a h/w rate table's reverse lookup table and * fill in ack durations. This routine is called for * each rate table returned through the ah_getRateTable * method. The reverse lookup tables are assumed to be * initialized to zero (or at least the first entry). * We use this as a key that indicates whether or not * we've previously setup the reverse lookup table. * * XXX not reentrant, but shouldn't matter */ void ath_hal_setupratetable(struct ath_hal *ah, HAL_RATE_TABLE *rt) { #define N(a) (sizeof(a)/sizeof(a[0])) int i; if (rt->rateCodeToIndex[0] != 0) /* already setup */ return; for (i = 0; i < N(rt->rateCodeToIndex); i++) rt->rateCodeToIndex[i] = (uint8_t) -1; for (i = 0; i < rt->rateCount; i++) { uint8_t code = rt->info[i].rateCode; uint8_t cix = rt->info[i].controlRate; HALASSERT(code < N(rt->rateCodeToIndex)); rt->rateCodeToIndex[code] = i; HALASSERT((code | rt->info[i].shortPreamble) < N(rt->rateCodeToIndex)); rt->rateCodeToIndex[code | rt->info[i].shortPreamble] = i; /* * XXX for 11g the control rate to use for 5.5 and 11 Mb/s * depends on whether they are marked as basic rates; * the static tables are setup with an 11b-compatible * 2Mb/s rate which will work but is suboptimal */ rt->info[i].lpAckDuration = ath_hal_computetxtime(ah, rt, WLAN_CTRL_FRAME_SIZE, cix, AH_FALSE); rt->info[i].spAckDuration = ath_hal_computetxtime(ah, rt, WLAN_CTRL_FRAME_SIZE, cix, AH_TRUE); } #undef N } HAL_STATUS ath_hal_getcapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type, uint32_t capability, uint32_t *result) { const HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps; switch (type) { case HAL_CAP_REG_DMN: /* regulatory domain */ *result = AH_PRIVATE(ah)->ah_currentRD; return HAL_OK; case HAL_CAP_DFS_DMN: /* DFS Domain */ *result = AH_PRIVATE(ah)->ah_dfsDomain; return HAL_OK; case HAL_CAP_CIPHER: /* cipher handled in hardware */ case HAL_CAP_TKIP_MIC: /* handle TKIP MIC in hardware */ return HAL_ENOTSUPP; case HAL_CAP_TKIP_SPLIT: /* hardware TKIP uses split keys */ return HAL_ENOTSUPP; case HAL_CAP_PHYCOUNTERS: /* hardware PHY error counters */ return pCap->halHwPhyCounterSupport ? HAL_OK : HAL_ENXIO; case HAL_CAP_WME_TKIPMIC: /* hardware can do TKIP MIC when WMM is turned on */ return HAL_ENOTSUPP; case HAL_CAP_DIVERSITY: /* hardware supports fast diversity */ return HAL_ENOTSUPP; case HAL_CAP_KEYCACHE_SIZE: /* hardware key cache size */ *result = pCap->halKeyCacheSize; return HAL_OK; case HAL_CAP_NUM_TXQUEUES: /* number of hardware tx queues */ *result = pCap->halTotalQueues; return HAL_OK; case HAL_CAP_VEOL: /* hardware supports virtual EOL */ return pCap->halVEOLSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_PSPOLL: /* hardware PS-Poll support works */ return pCap->halPSPollBroken ? HAL_ENOTSUPP : HAL_OK; case HAL_CAP_COMPRESSION: return pCap->halCompressSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_BURST: return pCap->halBurstSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_FASTFRAME: return pCap->halFastFramesSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_DIAG: /* hardware diagnostic support */ *result = AH_PRIVATE(ah)->ah_diagreg; return HAL_OK; case HAL_CAP_TXPOW: /* global tx power limit */ switch (capability) { case 0: /* facility is supported */ return HAL_OK; case 1: /* current limit */ *result = AH_PRIVATE(ah)->ah_powerLimit; return HAL_OK; case 2: /* current max tx power */ *result = AH_PRIVATE(ah)->ah_maxPowerLevel; return HAL_OK; case 3: /* scale factor */ *result = AH_PRIVATE(ah)->ah_tpScale; return HAL_OK; } return HAL_ENOTSUPP; case HAL_CAP_BSSIDMASK: /* hardware supports bssid mask */ return pCap->halBssIdMaskSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_MCAST_KEYSRCH: /* multicast frame keycache search */ return pCap->halMcastKeySrchSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_TSF_ADJUST: /* hardware has beacon tsf adjust */ return HAL_ENOTSUPP; case HAL_CAP_RFSILENT: /* rfsilent support */ switch (capability) { case 0: /* facility is supported */ return pCap->halRfSilentSupport ? HAL_OK : HAL_ENOTSUPP; case 1: /* current setting */ return AH_PRIVATE(ah)->ah_rfkillEnabled ? HAL_OK : HAL_ENOTSUPP; case 2: /* rfsilent config */ *result = AH_PRIVATE(ah)->ah_rfsilent; return HAL_OK; } return HAL_ENOTSUPP; case HAL_CAP_11D: return HAL_OK; case HAL_CAP_HT: return pCap->halHTSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_GTXTO: return pCap->halGTTSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_FAST_CC: return pCap->halFastCCSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_TX_CHAINMASK: /* mask of TX chains supported */ *result = pCap->halTxChainMask; return HAL_OK; case HAL_CAP_RX_CHAINMASK: /* mask of RX chains supported */ *result = pCap->halRxChainMask; return HAL_OK; case HAL_CAP_NUM_GPIO_PINS: *result = pCap->halNumGpioPins; return HAL_OK; case HAL_CAP_CST: return pCap->halCSTSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_RTS_AGGR_LIMIT: *result = pCap->halRtsAggrLimit; return HAL_OK; case HAL_CAP_4ADDR_AGGR: return pCap->hal4AddrAggrSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_EXT_CHAN_DFS: return pCap->halExtChanDfsSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_COMBINED_RADAR_RSSI: return pCap->halUseCombinedRadarRssi ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_AUTO_SLEEP: return pCap->halAutoSleepSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_MBSSID_AGGR_SUPPORT: return pCap->halMbssidAggrSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_SPLIT_4KB_TRANS: /* hardware handles descriptors straddling 4k page boundary */ return pCap->hal4kbSplitTransSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_REG_FLAG: *result = AH_PRIVATE(ah)->ah_currentRDext; return HAL_OK; case HAL_CAP_BT_COEX: return pCap->halBtCoexSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_HT20_SGI: return pCap->halHTSGI20Support ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_RXTSTAMP_PREC: /* rx desc tstamp precision (bits) */ *result = pCap->halTstampPrecision; return HAL_OK; case HAL_CAP_ENHANCED_DFS_SUPPORT: return pCap->halEnhancedDfsSupport ? HAL_OK : HAL_ENOTSUPP; /* FreeBSD-specific entries for now */ case HAL_CAP_RXORN_FATAL: /* HAL_INT_RXORN treated as fatal */ return AH_PRIVATE(ah)->ah_rxornIsFatal ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_INTRMASK: /* mask of supported interrupts */ *result = pCap->halIntrMask; return HAL_OK; case HAL_CAP_BSSIDMATCH: /* hardware has disable bssid match */ return pCap->halBssidMatchSupport ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_STREAMS: /* number of 11n spatial streams */ switch (capability) { case 0: /* TX */ *result = pCap->halTxStreams; return HAL_OK; case 1: /* RX */ *result = pCap->halRxStreams; return HAL_OK; default: return HAL_ENOTSUPP; } case HAL_CAP_RXDESC_SELFLINK: /* hardware supports self-linked final RX descriptors correctly */ return pCap->halHasRxSelfLinkedTail ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_LONG_RXDESC_TSF: /* 32 bit TSF in RX descriptor? */ return pCap->halHasLongRxDescTsf ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_BB_READ_WAR: /* Baseband read WAR */ return pCap->halHasBBReadWar? HAL_OK : HAL_ENOTSUPP; default: return HAL_EINVAL; } } HAL_BOOL ath_hal_setcapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type, uint32_t capability, uint32_t setting, HAL_STATUS *status) { switch (type) { case HAL_CAP_TXPOW: switch (capability) { case 3: if (setting <= HAL_TP_SCALE_MIN) { AH_PRIVATE(ah)->ah_tpScale = setting; return AH_TRUE; } break; } break; case HAL_CAP_RFSILENT: /* rfsilent support */ /* * NB: allow even if halRfSilentSupport is false * in case the EEPROM is misprogrammed. */ switch (capability) { case 1: /* current setting */ AH_PRIVATE(ah)->ah_rfkillEnabled = (setting != 0); return AH_TRUE; case 2: /* rfsilent config */ /* XXX better done per-chip for validation? */ AH_PRIVATE(ah)->ah_rfsilent = setting; return AH_TRUE; } break; case HAL_CAP_REG_DMN: /* regulatory domain */ AH_PRIVATE(ah)->ah_currentRD = setting; return AH_TRUE; case HAL_CAP_RXORN_FATAL: /* HAL_INT_RXORN treated as fatal */ AH_PRIVATE(ah)->ah_rxornIsFatal = setting; return AH_TRUE; default: break; } if (status) *status = HAL_EINVAL; return AH_FALSE; } /* * Common support for getDiagState method. */ static u_int ath_hal_getregdump(struct ath_hal *ah, const HAL_REGRANGE *regs, void *dstbuf, int space) { uint32_t *dp = dstbuf; int i; for (i = 0; space >= 2*sizeof(uint32_t); i++) { u_int r = regs[i].start; u_int e = regs[i].end; *dp++ = (r<<16) | e; space -= sizeof(uint32_t); do { *dp++ = OS_REG_READ(ah, r); r += sizeof(uint32_t); space -= sizeof(uint32_t); } while (r <= e && space >= sizeof(uint32_t)); } return (char *) dp - (char *) dstbuf; } static void ath_hal_setregs(struct ath_hal *ah, const HAL_REGWRITE *regs, int space) { while (space >= sizeof(HAL_REGWRITE)) { OS_REG_WRITE(ah, regs->addr, regs->value); regs++, space -= sizeof(HAL_REGWRITE); } } HAL_BOOL ath_hal_getdiagstate(struct ath_hal *ah, int request, const void *args, uint32_t argsize, void **result, uint32_t *resultsize) { switch (request) { case HAL_DIAG_REVS: *result = &AH_PRIVATE(ah)->ah_devid; *resultsize = sizeof(HAL_REVS); return AH_TRUE; case HAL_DIAG_REGS: *resultsize = ath_hal_getregdump(ah, args, *result,*resultsize); return AH_TRUE; case HAL_DIAG_SETREGS: ath_hal_setregs(ah, args, argsize); *resultsize = 0; return AH_TRUE; case HAL_DIAG_FATALERR: *result = &AH_PRIVATE(ah)->ah_fatalState[0]; *resultsize = sizeof(AH_PRIVATE(ah)->ah_fatalState); return AH_TRUE; case HAL_DIAG_EEREAD: if (argsize != sizeof(uint16_t)) return AH_FALSE; if (!ath_hal_eepromRead(ah, *(const uint16_t *)args, *result)) return AH_FALSE; *resultsize = sizeof(uint16_t); return AH_TRUE; #ifdef AH_PRIVATE_DIAG case HAL_DIAG_SETKEY: { const HAL_DIAG_KEYVAL *dk; if (argsize != sizeof(HAL_DIAG_KEYVAL)) return AH_FALSE; dk = (const HAL_DIAG_KEYVAL *)args; return ah->ah_setKeyCacheEntry(ah, dk->dk_keyix, &dk->dk_keyval, dk->dk_mac, dk->dk_xor); } case HAL_DIAG_RESETKEY: if (argsize != sizeof(uint16_t)) return AH_FALSE; return ah->ah_resetKeyCacheEntry(ah, *(const uint16_t *)args); #ifdef AH_SUPPORT_WRITE_EEPROM case HAL_DIAG_EEWRITE: { const HAL_DIAG_EEVAL *ee; if (argsize != sizeof(HAL_DIAG_EEVAL)) return AH_FALSE; ee = (const HAL_DIAG_EEVAL *)args; return ath_hal_eepromWrite(ah, ee->ee_off, ee->ee_data); } #endif /* AH_SUPPORT_WRITE_EEPROM */ #endif /* AH_PRIVATE_DIAG */ case HAL_DIAG_11NCOMPAT: if (argsize == 0) { *resultsize = sizeof(uint32_t); *((uint32_t *)(*result)) = AH_PRIVATE(ah)->ah_11nCompat; } else if (argsize == sizeof(uint32_t)) { AH_PRIVATE(ah)->ah_11nCompat = *(const uint32_t *)args; } else return AH_FALSE; return AH_TRUE; } return AH_FALSE; } /* * Set the properties of the tx queue with the parameters * from qInfo. */ HAL_BOOL ath_hal_setTxQProps(struct ath_hal *ah, HAL_TX_QUEUE_INFO *qi, const HAL_TXQ_INFO *qInfo) { uint32_t cw; if (qi->tqi_type == HAL_TX_QUEUE_INACTIVE) { HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: inactive queue\n", __func__); return AH_FALSE; } /* XXX validate parameters */ qi->tqi_ver = qInfo->tqi_ver; qi->tqi_subtype = qInfo->tqi_subtype; qi->tqi_qflags = qInfo->tqi_qflags; qi->tqi_priority = qInfo->tqi_priority; if (qInfo->tqi_aifs != HAL_TXQ_USEDEFAULT) qi->tqi_aifs = AH_MIN(qInfo->tqi_aifs, 255); else qi->tqi_aifs = INIT_AIFS; if (qInfo->tqi_cwmin != HAL_TXQ_USEDEFAULT) { cw = AH_MIN(qInfo->tqi_cwmin, 1024); /* make sure that the CWmin is of the form (2^n - 1) */ qi->tqi_cwmin = 1; while (qi->tqi_cwmin < cw) qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1; } else qi->tqi_cwmin = qInfo->tqi_cwmin; if (qInfo->tqi_cwmax != HAL_TXQ_USEDEFAULT) { cw = AH_MIN(qInfo->tqi_cwmax, 1024); /* make sure that the CWmax is of the form (2^n - 1) */ qi->tqi_cwmax = 1; while (qi->tqi_cwmax < cw) qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1; } else qi->tqi_cwmax = INIT_CWMAX; /* Set retry limit values */ if (qInfo->tqi_shretry != 0) qi->tqi_shretry = AH_MIN(qInfo->tqi_shretry, 15); else qi->tqi_shretry = INIT_SH_RETRY; if (qInfo->tqi_lgretry != 0) qi->tqi_lgretry = AH_MIN(qInfo->tqi_lgretry, 15); else qi->tqi_lgretry = INIT_LG_RETRY; qi->tqi_cbrPeriod = qInfo->tqi_cbrPeriod; qi->tqi_cbrOverflowLimit = qInfo->tqi_cbrOverflowLimit; qi->tqi_burstTime = qInfo->tqi_burstTime; qi->tqi_readyTime = qInfo->tqi_readyTime; switch (qInfo->tqi_subtype) { case HAL_WME_UPSD: if (qi->tqi_type == HAL_TX_QUEUE_DATA) qi->tqi_intFlags = HAL_TXQ_USE_LOCKOUT_BKOFF_DIS; break; default: break; /* NB: silence compiler */ } return AH_TRUE; } HAL_BOOL ath_hal_getTxQProps(struct ath_hal *ah, HAL_TXQ_INFO *qInfo, const HAL_TX_QUEUE_INFO *qi) { if (qi->tqi_type == HAL_TX_QUEUE_INACTIVE) { HALDEBUG(ah, HAL_DEBUG_TXQUEUE, "%s: inactive queue\n", __func__); return AH_FALSE; } qInfo->tqi_qflags = qi->tqi_qflags; qInfo->tqi_ver = qi->tqi_ver; qInfo->tqi_subtype = qi->tqi_subtype; qInfo->tqi_qflags = qi->tqi_qflags; qInfo->tqi_priority = qi->tqi_priority; qInfo->tqi_aifs = qi->tqi_aifs; qInfo->tqi_cwmin = qi->tqi_cwmin; qInfo->tqi_cwmax = qi->tqi_cwmax; qInfo->tqi_shretry = qi->tqi_shretry; qInfo->tqi_lgretry = qi->tqi_lgretry; qInfo->tqi_cbrPeriod = qi->tqi_cbrPeriod; qInfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit; qInfo->tqi_burstTime = qi->tqi_burstTime; qInfo->tqi_readyTime = qi->tqi_readyTime; return AH_TRUE; } /* 11a Turbo 11b 11g 108g */ static const int16_t NOISE_FLOOR[] = { -96, -93, -98, -96, -93 }; /* * Read the current channel noise floor and return. * If nf cal hasn't finished, channel noise floor should be 0 * and we return a nominal value based on band and frequency. * * NB: This is a private routine used by per-chip code to * implement the ah_getChanNoise method. */ int16_t ath_hal_getChanNoise(struct ath_hal *ah, const struct ieee80211_channel *chan) { HAL_CHANNEL_INTERNAL *ichan; ichan = ath_hal_checkchannel(ah, chan); if (ichan == AH_NULL) { HALDEBUG(ah, HAL_DEBUG_NFCAL, "%s: invalid channel %u/0x%x; no mapping\n", __func__, chan->ic_freq, chan->ic_flags); return 0; } if (ichan->rawNoiseFloor == 0) { WIRELESS_MODE mode = ath_hal_chan2wmode(ah, chan); HALASSERT(mode < WIRELESS_MODE_MAX); return NOISE_FLOOR[mode] + ath_hal_getNfAdjust(ah, ichan); } else return ichan->rawNoiseFloor + ichan->noiseFloorAdjust; } /* * Fetch the current setup of ctl/ext noise floor values. * * If the CHANNEL_MIMO_NF_VALID flag isn't set, the array is simply * populated with values from NOISE_FLOOR[] + ath_hal_getNfAdjust(). * * The caller must supply ctl/ext NF arrays which are at least * AH_MIMO_MAX_CHAINS entries long. */ int ath_hal_get_mimo_chan_noise(struct ath_hal *ah, const struct ieee80211_channel *chan, int16_t *nf_ctl, int16_t *nf_ext) { #ifdef AH_SUPPORT_AR5416 HAL_CHANNEL_INTERNAL *ichan; int i; ichan = ath_hal_checkchannel(ah, chan); if (ichan == AH_NULL) { HALDEBUG(ah, HAL_DEBUG_NFCAL, "%s: invalid channel %u/0x%x; no mapping\n", __func__, chan->ic_freq, chan->ic_flags); for (i = 0; i < AH_MIMO_MAX_CHAINS; i++) { nf_ctl[i] = nf_ext[i] = 0; } return 0; } /* Return 0 if there's no valid MIMO values (yet) */ if (! (ichan->privFlags & CHANNEL_MIMO_NF_VALID)) { for (i = 0; i < AH_MIMO_MAX_CHAINS; i++) { nf_ctl[i] = nf_ext[i] = 0; } return 0; } if (ichan->rawNoiseFloor == 0) { WIRELESS_MODE mode = ath_hal_chan2wmode(ah, chan); HALASSERT(mode < WIRELESS_MODE_MAX); /* * See the comment below - this could cause issues for * stations which have a very low RSSI, below the * 'normalised' NF values in NOISE_FLOOR[]. */ for (i = 0; i < AH_MIMO_MAX_CHAINS; i++) { nf_ctl[i] = nf_ext[i] = NOISE_FLOOR[mode] + ath_hal_getNfAdjust(ah, ichan); } return 1; } else { /* * The value returned here from a MIMO radio is presumed to be * "good enough" as a NF calculation. As RSSI values are calculated * against this, an adjusted NF may be higher than the RSSI value * returned from a vary weak station, resulting in an obscenely * high signal strength calculation being returned. * * This should be re-evaluated at a later date, along with any * signal strength calculations which are made. Quite likely the * RSSI values will need to be adjusted to ensure the calculations * don't "wrap" when RSSI is less than the "adjusted" NF value. * ("Adjust" here is via ichan->noiseFloorAdjust.) */ for (i = 0; i < AH_MIMO_MAX_CHAINS; i++) { nf_ctl[i] = ichan->noiseFloorCtl[i] + ath_hal_getNfAdjust(ah, ichan); nf_ext[i] = ichan->noiseFloorExt[i] + ath_hal_getNfAdjust(ah, ichan); } return 1; } #else return 0; #endif /* AH_SUPPORT_AR5416 */ } /* * Process all valid raw noise floors into the dBm noise floor values. * Though our device has no reference for a dBm noise floor, we perform * a relative minimization of NF's based on the lowest NF found across a * channel scan. */ void ath_hal_process_noisefloor(struct ath_hal *ah) { HAL_CHANNEL_INTERNAL *c; int16_t correct2, correct5; int16_t lowest2, lowest5; int i; /* * Find the lowest 2GHz and 5GHz noise floor values after adjusting * for statistically recorded NF/channel deviation. */ correct2 = lowest2 = 0; correct5 = lowest5 = 0; for (i = 0; i < AH_PRIVATE(ah)->ah_nchan; i++) { WIRELESS_MODE mode; int16_t nf; c = &AH_PRIVATE(ah)->ah_channels[i]; if (c->rawNoiseFloor >= 0) continue; /* XXX can't identify proper mode */ mode = IS_CHAN_5GHZ(c) ? WIRELESS_MODE_11a : WIRELESS_MODE_11g; nf = c->rawNoiseFloor + NOISE_FLOOR[mode] + ath_hal_getNfAdjust(ah, c); if (IS_CHAN_5GHZ(c)) { if (nf < lowest5) { lowest5 = nf; correct5 = NOISE_FLOOR[mode] - (c->rawNoiseFloor + ath_hal_getNfAdjust(ah, c)); } } else { if (nf < lowest2) { lowest2 = nf; correct2 = NOISE_FLOOR[mode] - (c->rawNoiseFloor + ath_hal_getNfAdjust(ah, c)); } } } /* Correct the channels to reach the expected NF value */ for (i = 0; i < AH_PRIVATE(ah)->ah_nchan; i++) { c = &AH_PRIVATE(ah)->ah_channels[i]; if (c->rawNoiseFloor >= 0) continue; /* Apply correction factor */ c->noiseFloorAdjust = ath_hal_getNfAdjust(ah, c) + (IS_CHAN_5GHZ(c) ? correct5 : correct2); HALDEBUG(ah, HAL_DEBUG_NFCAL, "%u raw nf %d adjust %d\n", c->channel, c->rawNoiseFloor, c->noiseFloorAdjust); } } /* * INI support routines. */ int ath_hal_ini_write(struct ath_hal *ah, const HAL_INI_ARRAY *ia, int col, int regWr) { int r; HALASSERT(col < ia->cols); for (r = 0; r < ia->rows; r++) { OS_REG_WRITE(ah, HAL_INI_VAL(ia, r, 0), HAL_INI_VAL(ia, r, col)); /* Analog shift register delay seems needed for Merlin - PR kern/154220 */ if (HAL_INI_VAL(ia, r, 0) >= 0x7800 && HAL_INI_VAL(ia, r, 0) < 0x7900) OS_DELAY(100); DMA_YIELD(regWr); } return regWr; } void ath_hal_ini_bank_setup(uint32_t data[], const HAL_INI_ARRAY *ia, int col) { int r; HALASSERT(col < ia->cols); for (r = 0; r < ia->rows; r++) data[r] = HAL_INI_VAL(ia, r, col); } int ath_hal_ini_bank_write(struct ath_hal *ah, const HAL_INI_ARRAY *ia, const uint32_t data[], int regWr) { int r; for (r = 0; r < ia->rows; r++) { OS_REG_WRITE(ah, HAL_INI_VAL(ia, r, 0), data[r]); DMA_YIELD(regWr); } return regWr; } /* * These are EEPROM board related routines which should likely live in * a helper library of some sort. */ /************************************************************** * ath_ee_getLowerUppderIndex * * Return indices surrounding the value in sorted integer lists. * Requirement: the input list must be monotonically increasing * and populated up to the list size * Returns: match is set if an index in the array matches exactly * or a the target is before or after the range of the array. */ HAL_BOOL ath_ee_getLowerUpperIndex(uint8_t target, uint8_t *pList, uint16_t listSize, uint16_t *indexL, uint16_t *indexR) { uint16_t i; /* * Check first and last elements for beyond ordered array cases. */ if (target <= pList[0]) { *indexL = *indexR = 0; return AH_TRUE; } if (target >= pList[listSize-1]) { *indexL = *indexR = (uint16_t)(listSize - 1); return AH_TRUE; } /* look for value being near or between 2 values in list */ for (i = 0; i < listSize - 1; i++) { /* * If value is close to the current value of the list * then target is not between values, it is one of the values */ if (pList[i] == target) { *indexL = *indexR = i; return AH_TRUE; } /* * Look for value being between current value and next value * if so return these 2 values */ if (target < pList[i + 1]) { *indexL = i; *indexR = (uint16_t)(i + 1); return AH_FALSE; } } HALASSERT(0); *indexL = *indexR = 0; return AH_FALSE; } /************************************************************** * ath_ee_FillVpdTable * * Fill the Vpdlist for indices Pmax-Pmin * Note: pwrMin, pwrMax and Vpdlist are all in dBm * 4 */ HAL_BOOL ath_ee_FillVpdTable(uint8_t pwrMin, uint8_t pwrMax, uint8_t *pPwrList, uint8_t *pVpdList, uint16_t numIntercepts, uint8_t *pRetVpdList) { uint16_t i, k; uint8_t currPwr = pwrMin; uint16_t idxL, idxR; HALASSERT(pwrMax > pwrMin); for (i = 0; i <= (pwrMax - pwrMin) / 2; i++) { ath_ee_getLowerUpperIndex(currPwr, pPwrList, numIntercepts, &(idxL), &(idxR)); if (idxR < 1) idxR = 1; /* extrapolate below */ if (idxL == numIntercepts - 1) idxL = (uint16_t)(numIntercepts - 2); /* extrapolate above */ if (pPwrList[idxL] == pPwrList[idxR]) k = pVpdList[idxL]; else k = (uint16_t)( ((currPwr - pPwrList[idxL]) * pVpdList[idxR] + (pPwrList[idxR] - currPwr) * pVpdList[idxL]) / (pPwrList[idxR] - pPwrList[idxL]) ); HALASSERT(k < 256); pRetVpdList[i] = (uint8_t)k; currPwr += 2; /* half dB steps */ } return AH_TRUE; } /************************************************************************** * ath_ee_interpolate * * Returns signed interpolated or the scaled up interpolated value */ int16_t ath_ee_interpolate(uint16_t target, uint16_t srcLeft, uint16_t srcRight, int16_t targetLeft, int16_t targetRight) { int16_t rv; if (srcRight == srcLeft) { rv = targetLeft; } else { rv = (int16_t)( ((target - srcLeft) * targetRight + (srcRight - target) * targetLeft) / (srcRight - srcLeft) ); } return rv; } /* * Adjust the TSF. */ void ath_hal_adjusttsf(struct ath_hal *ah, int32_t tsfdelta) { /* XXX handle wrap/overflow */ OS_REG_WRITE(ah, AR_TSF_L32, OS_REG_READ(ah, AR_TSF_L32) + tsfdelta); } /* * Enable or disable CCA. */ void ath_hal_setcca(struct ath_hal *ah, int ena) { /* * NB: fill me in; this is not provided by default because disabling * CCA in most locales violates regulatory. */ } /* * Get CCA setting. */ int ath_hal_getcca(struct ath_hal *ah) { u_int32_t diag; if (ath_hal_getcapability(ah, HAL_CAP_DIAG, 0, &diag) != HAL_OK) return 1; return ((diag & 0x500000) == 0); }