/* * Copyright (c) 2002-2008 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. * * $Id: ah.c,v 1.3 2011/03/07 11:25:42 cegger Exp $ */ #include "opt_ah.h" #include "ah.h" #include "ah_internal.h" #include "ah_devid.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, 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, 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; } /* 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) { #ifdef AH_HAS_RF 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; #endif return AH_NULL; } /* * 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 int i; for (i = 0; i < AH_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; #undef AH_TIMEOUT } /* * 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; } /* * 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; kbps = rates->info[rateix].rateKbps; /* * index can be invalid duting dynamic Turbo transitions. */ if(kbps == 0) return 0; switch (rates->info[rateix].phy) { case IEEE80211_T_CCK: #define CCK_SIFS_TIME 10 #define CCK_PREAMBLE_BITS 144 #define CCK_PLCP_BITS 48 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; #undef CCK_SIFS_TIME #undef CCK_PREAMBLE_BITS #undef CCK_PLCP_BITS case IEEE80211_T_OFDM: #define OFDM_SIFS_TIME 16 #define OFDM_PREAMBLE_TIME 20 #define OFDM_PLCP_BITS 22 #define OFDM_SYMBOL_TIME 4 #define OFDM_SIFS_TIME_HALF 32 #define OFDM_PREAMBLE_TIME_HALF 40 #define OFDM_PLCP_BITS_HALF 22 #define OFDM_SYMBOL_TIME_HALF 8 #define OFDM_SIFS_TIME_QUARTER 64 #define OFDM_PREAMBLE_TIME_QUARTER 80 #define OFDM_PLCP_BITS_QUARTER 22 #define OFDM_SYMBOL_TIME_QUARTER 16 if (AH_PRIVATE(ah)->ah_curchan && IS_CHAN_QUARTER_RATE(AH_PRIVATE(ah)->ah_curchan)) { bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = OFDM_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = OFDM_SIFS_TIME_QUARTER + OFDM_PREAMBLE_TIME_QUARTER + (numSymbols * OFDM_SYMBOL_TIME_QUARTER); } else if (AH_PRIVATE(ah)->ah_curchan && IS_CHAN_HALF_RATE(AH_PRIVATE(ah)->ah_curchan)) { bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000; HALASSERT(bitsPerSymbol != 0); numBits = OFDM_PLCP_BITS + (frameLen << 3); numSymbols = howmany(numBits, bitsPerSymbol); txTime = OFDM_SIFS_TIME_HALF + OFDM_PREAMBLE_TIME_HALF + (numSymbols * OFDM_SYMBOL_TIME_HALF); } else { /* full rate channel */ 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; #undef OFDM_SIFS_TIME #undef OFDM_PREAMBLE_TIME #undef OFDM_PLCP_BITS #undef OFDM_SYMBOL_TIME case IEEE80211_T_TURBO: #define TURBO_SIFS_TIME 8 #define TURBO_PREAMBLE_TIME 14 #define TURBO_PLCP_BITS 22 #define TURBO_SYMBOL_TIME 4 /* we still save OFDM rates in kbps - so double them */ bitsPerSymbol = ((kbps << 1) * 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; #undef TURBO_SIFS_TIME #undef TURBO_PREAMBLE_TIME #undef TURBO_PLCP_BITS #undef TURBO_SYMBOL_TIME 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; } static __inline int mapgsm(u_int freq, u_int flags) { freq *= 10; if (flags & CHANNEL_QUARTER) freq += 5; else if (flags & CHANNEL_HALF) freq += 10; else freq += 20; return (freq - 24220) / 5; } static __inline int mappsb(u_int freq, u_int flags) { return ((freq * 10) + (((freq % 5) == 2) ? 5 : 0) - 49400) / 5; } /* * Convert GHz frequency to IEEE channel number. */ int ath_hal_mhz2ieee(struct ath_hal *ah, u_int freq, u_int flags) { if (flags & CHANNEL_2GHZ) { /* 2GHz band */ if (freq == 2484) return 14; if (freq < 2484) { if (ath_hal_isgsmsku(ah)) return mapgsm(freq, flags); return ((int)freq - 2407) / 5; } else return 15 + ((freq - 2512) / 20); } else if (flags & CHANNEL_5GHZ) {/* 5Ghz band */ if (ath_hal_ispublicsafetysku(ah) && IS_CHAN_IN_PUBLIC_SAFETY_BAND(freq)) { return mappsb(freq, flags); } else if ((flags & CHANNEL_A) && (freq <= 5000)) { return (freq - 4000) / 5; } else { return (freq - 5000) / 5; } } else { /* either, guess */ if (freq == 2484) return 14; if (freq < 2484) { if (ath_hal_isgsmsku(ah)) return mapgsm(freq, flags); return ((int)freq - 2407) / 5; } if (freq < 5000) { if (ath_hal_ispublicsafetysku(ah) && IS_CHAN_IN_PUBLIC_SAFETY_BAND(freq)) { return mappsb(freq, flags); } else if (freq > 4900) { return (freq - 4000) / 5; } else { return 15 + ((freq - 2512) / 20); } } return (freq - 5000) / 5; } } 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 HAL_CHANNEL *chan) { if (IS_CHAN_CCK(chan)) return WIRELESS_MODE_11b; if (IS_CHAN_G(chan)) return WIRELESS_MODE_11g; if (IS_CHAN_108G(chan)) return WIRELESS_MODE_108g; if (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 }; u_int ath_hal_mac_clks(struct ath_hal *ah, u_int usecs) { const HAL_CHANNEL *c = (const HAL_CHANNEL *) AH_PRIVATE(ah)->ah_curchan; u_int clks; /* NB: ah_curchan may be null when called attach time */ if (c != AH_NULL) { clks = usecs * CLOCK_RATE[ath_hal_chan2wmode(ah, c)]; if (IS_CHAN_HT40(c)) clks <<= 1; else if (IS_CHAN_HALF_RATE(c)) clks >>= 1; else if (IS_CHAN_QUARTER_RATE(c)) clks >>= 2; } else clks = usecs * CLOCK_RATE[WIRELESS_MODE_11b]; return clks; } u_int ath_hal_mac_usec(struct ath_hal *ah, u_int clks) { const HAL_CHANNEL *c = (const HAL_CHANNEL *) AH_PRIVATE(ah)->ah_curchan; u_int usec; /* NB: ah_curchan may be null when called attach time */ if (c != AH_NULL) { usec = clks / CLOCK_RATE[ath_hal_chan2wmode(ah, c)]; if (IS_CHAN_HT40(c)) usec >>= 1; else if (IS_CHAN_HALF_RATE(c)) usec <<= 1; else if (IS_CHAN_QUARTER_RATE(c)) usec <<= 2; } 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_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: #ifdef AH_SUPPORT_11D return HAL_OK; #else return HAL_ENOTSUPP; #endif case HAL_CAP_RXORN_FATAL: /* HAL_INT_RXORN treated as fatal */ return AH_PRIVATE(ah)->ah_rxornIsFatal ? HAL_OK : HAL_ENOTSUPP; case HAL_CAP_HT: return pCap->halHTSupport ? 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_RXTSTAMP_PREC: /* rx desc tstamp precision (bits) */ *result = pCap->halTstampPrecision; return HAL_OK; 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; 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; } 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_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, HAL_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->channel, chan->channelFlags); 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; } /* * 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; mode = ath_hal_chan2wmode(ah, (HAL_CHANNEL *) c); HALASSERT(mode < WIRELESS_MODE_MAX); 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/0x%x raw nf %d adjust %d\n", c->channel, c->channelFlags, 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; for (r = 0; r < ia->rows; r++) { OS_REG_WRITE(ah, HAL_INI_VAL(ia, r, 0), HAL_INI_VAL(ia, r, col)); DMA_YIELD(regWr); } return regWr; } void ath_hal_ini_bank_setup(uint32_t data[], const HAL_INI_ARRAY *ia, int col) { int r; 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; }