diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/reset.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/reset.c | 642 |
1 files changed, 171 insertions, 471 deletions
diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c index 5b179d0..9dd5792 100644 --- a/drivers/net/wireless/ath/ath5k/reset.c +++ b/drivers/net/wireless/ath/ath5k/reset.c @@ -32,6 +32,11 @@ #include "base.h" #include "debug.h" + +/******************\ +* Helper functions * +\******************/ + /* * Check if a register write has been completed */ @@ -53,146 +58,165 @@ int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val, return (i <= 0) ? -EAGAIN : 0; } + +/*************************\ +* Clock related functions * +\*************************/ + /** - * ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212 - * - * @ah: the &struct ath5k_hw - * @channel: the currently set channel upon reset + * ath5k_hw_htoclock - Translate usec to hw clock units * - * Write the delta slope coefficient (used on pilot tracking ?) for OFDM - * operation on the AR5212 upon reset. This is a helper for ath5k_hw_reset(). - * - * Since delta slope is floating point we split it on its exponent and - * mantissa and provide these values on hw. - * - * For more infos i think this patent is related - * http://www.freepatentsonline.com/7184495.html + * @ah: The &struct ath5k_hw + * @usec: value in microseconds */ -static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah, - struct ieee80211_channel *channel) +unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec) { - /* Get exponent and mantissa and set it */ - u32 coef_scaled, coef_exp, coef_man, - ds_coef_exp, ds_coef_man, clock; - - BUG_ON(!(ah->ah_version == AR5K_AR5212) || - !(channel->hw_value & CHANNEL_OFDM)); - - /* Get coefficient - * ALGO: coef = (5 * clock / carrier_freq) / 2 - * we scale coef by shifting clock value by 24 for - * better precision since we use integers */ - /* TODO: Half/quarter rate */ - clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40; - coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq; - - /* Get exponent - * ALGO: coef_exp = 14 - highest set bit position */ - coef_exp = ilog2(coef_scaled); - - /* Doesn't make sense if it's zero*/ - if (!coef_scaled || !coef_exp) - return -EINVAL; - - /* Note: we've shifted coef_scaled by 24 */ - coef_exp = 14 - (coef_exp - 24); + struct ath_common *common = ath5k_hw_common(ah); + return usec * common->clockrate; +} +/** + * ath5k_hw_clocktoh - Translate hw clock units to usec + * @clock: value in hw clock units + */ +unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock) +{ + struct ath_common *common = ath5k_hw_common(ah); + return clock / common->clockrate; +} - /* Get mantissa (significant digits) - * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */ - coef_man = coef_scaled + - (1 << (24 - coef_exp - 1)); +/** + * ath5k_hw_set_clockrate - Set common->clockrate for the current channel + * + * @ah: The &struct ath5k_hw + */ +void ath5k_hw_set_clockrate(struct ath5k_hw *ah) +{ + struct ieee80211_channel *channel = ah->ah_current_channel; + struct ath_common *common = ath5k_hw_common(ah); + int clock; - /* Calculate delta slope coefficient exponent - * and mantissa (remove scaling) and set them on hw */ - ds_coef_man = coef_man >> (24 - coef_exp); - ds_coef_exp = coef_exp - 16; + if (channel->hw_value & CHANNEL_5GHZ) + clock = 40; /* 802.11a */ + else if (channel->hw_value & CHANNEL_CCK) + clock = 22; /* 802.11b */ + else + clock = 44; /* 802.11g */ - AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3, - AR5K_PHY_TIMING_3_DSC_MAN, ds_coef_man); - AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3, - AR5K_PHY_TIMING_3_DSC_EXP, ds_coef_exp); + /* Clock rate in turbo modes is twice the normal rate */ + if (channel->hw_value & CHANNEL_TURBO) + clock *= 2; - return 0; + common->clockrate = clock; } - /* - * index into rates for control rates, we can set it up like this because - * this is only used for AR5212 and we know it supports G mode - */ -static const unsigned int control_rates[] = - { 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 }; - -/** - * ath5k_hw_write_rate_duration - fill rate code to duration table - * - * @ah: the &struct ath5k_hw - * @mode: one of enum ath5k_driver_mode - * - * Write the rate code to duration table upon hw reset. This is a helper for - * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout on - * the hardware, based on current mode, for each rate. The rates which are - * capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have - * different rate code so we write their value twice (one for long preample - * and one for short). + * If there is an external 32KHz crystal available, use it + * as ref. clock instead of 32/40MHz clock and baseband clocks + * to save power during sleep or restore normal 32/40MHz + * operation. * - * Note: Band doesn't matter here, if we set the values for OFDM it works - * on both a and g modes. So all we have to do is set values for all g rates - * that include all OFDM and CCK rates. If we operate in turbo or xr/half/ - * quarter rate mode, we need to use another set of bitrates (that's why we - * need the mode parameter) but we don't handle these proprietary modes yet. + * XXX: When operating on 32KHz certain PHY registers (27 - 31, + * 123 - 127) require delay on access. */ -static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah, - unsigned int mode) +static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable) { - struct ath5k_softc *sc = ah->ah_sc; - struct ieee80211_rate *rate; - unsigned int i; + struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom; + u32 scal, spending, usec32; + + /* Only set 32KHz settings if we have an external + * 32KHz crystal present */ + if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) || + AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) && + enable) { + + /* 1 usec/cycle */ + AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1); + /* Set up tsf increment on each cycle */ + AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61); + + /* Set baseband sleep control registers + * and sleep control rate */ + ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR); + + if ((ah->ah_radio == AR5K_RF5112) || + (ah->ah_radio == AR5K_RF5413) || + (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) + spending = 0x14; + else + spending = 0x18; + ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING); + + if ((ah->ah_radio == AR5K_RF5112) || + (ah->ah_radio == AR5K_RF5413) || + (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) { + ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT); + ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL); + ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK); + ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY); + AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, + AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02); + } else { + ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT); + ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL); + ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK); + ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY); + AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, + AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03); + } - /* Write rate duration table */ - for (i = 0; i < sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates; i++) { - u32 reg; - u16 tx_time; + /* Enable sleep clock operation */ + AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, + AR5K_PCICFG_SLEEP_CLOCK_EN); - rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[control_rates[i]]; + } else { - /* Set ACK timeout */ - reg = AR5K_RATE_DUR(rate->hw_value); + /* Disable sleep clock operation and + * restore default parameters */ + AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, + AR5K_PCICFG_SLEEP_CLOCK_EN); - /* An ACK frame consists of 10 bytes. If you add the FCS, - * which ieee80211_generic_frame_duration() adds, - * its 14 bytes. Note we use the control rate and not the - * actual rate for this rate. See mac80211 tx.c - * ieee80211_duration() for a brief description of - * what rate we should choose to TX ACKs. */ - tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw, - NULL, 10, rate)); + AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, + AR5K_PCICFG_SLEEP_CLOCK_RATE, 0); - ath5k_hw_reg_write(ah, tx_time, reg); + ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR); + ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT); - if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)) - continue; + if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)) + scal = AR5K_PHY_SCAL_32MHZ_2417; + else if (ee->ee_is_hb63) + scal = AR5K_PHY_SCAL_32MHZ_HB63; + else + scal = AR5K_PHY_SCAL_32MHZ; + ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL); - /* - * We're not distinguishing short preamble here, - * This is true, all we'll get is a longer value here - * which is not necessarilly bad. We could use - * export ieee80211_frame_duration() but that needs to be - * fixed first to be properly used by mac802111 drivers: - * - * - remove erp stuff and let the routine figure ofdm - * erp rates - * - remove passing argument ieee80211_local as - * drivers don't have access to it - * - move drivers using ieee80211_generic_frame_duration() - * to this - */ - ath5k_hw_reg_write(ah, tx_time, - reg + (AR5K_SET_SHORT_PREAMBLE << 2)); + ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK); + ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY); + + if ((ah->ah_radio == AR5K_RF5112) || + (ah->ah_radio == AR5K_RF5413) || + (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) + spending = 0x14; + else + spending = 0x18; + ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING); + + if ((ah->ah_radio == AR5K_RF5112) || + (ah->ah_radio == AR5K_RF5413)) + usec32 = 39; + else + usec32 = 31; + AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32); + + AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1); } } + +/*********************\ +* Reset/Sleep control * +\*********************/ + /* * Reset chipset */ @@ -522,107 +546,10 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial) return 0; } -/* - * If there is an external 32KHz crystal available, use it - * as ref. clock instead of 32/40MHz clock and baseband clocks - * to save power during sleep or restore normal 32/40MHz - * operation. - * - * XXX: When operating on 32KHz certain PHY registers (27 - 31, - * 123 - 127) require delay on access. - */ -static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable) -{ - struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom; - u32 scal, spending, usec32; - - /* Only set 32KHz settings if we have an external - * 32KHz crystal present */ - if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) || - AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) && - enable) { - - /* 1 usec/cycle */ - AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1); - /* Set up tsf increment on each cycle */ - AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61); - - /* Set baseband sleep control registers - * and sleep control rate */ - ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR); - - if ((ah->ah_radio == AR5K_RF5112) || - (ah->ah_radio == AR5K_RF5413) || - (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) - spending = 0x14; - else - spending = 0x18; - ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING); - - if ((ah->ah_radio == AR5K_RF5112) || - (ah->ah_radio == AR5K_RF5413) || - (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) { - ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT); - ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL); - ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK); - ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY); - AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, - AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02); - } else { - ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT); - ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL); - ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK); - ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY); - AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, - AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03); - } - /* Enable sleep clock operation */ - AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, - AR5K_PCICFG_SLEEP_CLOCK_EN); - - } else { - - /* Disable sleep clock operation and - * restore default parameters */ - AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, - AR5K_PCICFG_SLEEP_CLOCK_EN); - - AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG, - AR5K_PCICFG_SLEEP_CLOCK_RATE, 0); - - ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR); - ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT); - - if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)) - scal = AR5K_PHY_SCAL_32MHZ_2417; - else if (ee->ee_is_hb63) - scal = AR5K_PHY_SCAL_32MHZ_HB63; - else - scal = AR5K_PHY_SCAL_32MHZ; - ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL); - - ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK); - ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY); - - if ((ah->ah_radio == AR5K_RF5112) || - (ah->ah_radio == AR5K_RF5413) || - (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) - spending = 0x14; - else - spending = 0x18; - ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING); - - if ((ah->ah_radio == AR5K_RF5112) || - (ah->ah_radio == AR5K_RF5413)) - usec32 = 39; - else - usec32 = 31; - AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32); - - AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1); - } -} +/**************************************\ +* Post-initvals register modifications * +\**************************************/ /* TODO: Half/Quarter rate */ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah, @@ -705,7 +632,8 @@ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah, ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL); } - if (ah->ah_mac_srev < AR5K_SREV_AR5211) { + if ((ah->ah_radio == AR5K_RF5112) && + (ah->ah_mac_srev < AR5K_SREV_AR5211)) { u32 usec_reg; /* 5311 has different tx/rx latency masks * from 5211, since we deal 5311 the same @@ -734,6 +662,10 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah, struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom; s16 cck_ofdm_pwr_delta; + /* TODO: Add support for AR5210 EEPROM */ + if (ah->ah_version == AR5K_AR5210) + return; + /* Adjust power delta for channel 14 */ if (channel->center_freq == 2484) cck_ofdm_pwr_delta = @@ -870,15 +802,16 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah, ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE); } -/* - * Main reset function - */ + +/*********************\ +* Main reset function * +\*********************/ + int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode, struct ieee80211_channel *channel, bool change_channel) { struct ath_common *common = ath5k_hw_common(ah); u32 s_seq[10], s_led[3], staid1_flags, tsf_up, tsf_lo; - u32 phy_tst1; u8 mode, freq, ee_mode; int i, ret; @@ -1026,93 +959,15 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode, return ret; /* - * 5211/5212 Specific + * Tweak initval settings for revised + * chipsets and add some more config + * bits */ - if (ah->ah_version != AR5K_AR5210) { - - /* - * Write initial RF gain settings - * This should work for both 5111/5112 - */ - ret = ath5k_hw_rfgain_init(ah, freq); - if (ret) - return ret; - - mdelay(1); - - /* - * Tweak initval settings for revised - * chipsets and add some more config - * bits - */ - ath5k_hw_tweak_initval_settings(ah, channel); - - /* - * Set TX power - */ - ret = ath5k_hw_txpower(ah, channel, ee_mode, - ah->ah_txpower.txp_max_pwr / 2); - if (ret) - return ret; - - /* Write rate duration table only on AR5212 and if - * virtual interface has already been brought up - * XXX: rethink this after new mode changes to - * mac80211 are integrated */ - if (ah->ah_version == AR5K_AR5212 && - ah->ah_sc->nvifs) - ath5k_hw_write_rate_duration(ah, mode); - - /* - * Write RF buffer - */ - ret = ath5k_hw_rfregs_init(ah, channel, mode); - if (ret) - return ret; - - - /* Write OFDM timings on 5212*/ - if (ah->ah_version == AR5K_AR5212 && - channel->hw_value & CHANNEL_OFDM) { + ath5k_hw_tweak_initval_settings(ah, channel); - ret = ath5k_hw_write_ofdm_timings(ah, channel); - if (ret) - return ret; + /* Commit values from EEPROM */ + ath5k_hw_commit_eeprom_settings(ah, channel, ee_mode); - /* Spur info is available only from EEPROM versions - * greater than 5.3, but the EEPROM routines will use - * static values for older versions */ - if (ah->ah_mac_srev >= AR5K_SREV_AR5424) - ath5k_hw_set_spur_mitigation_filter(ah, - channel); - } - - /*Enable/disable 802.11b mode on 5111 - (enable 2111 frequency converter + CCK)*/ - if (ah->ah_radio == AR5K_RF5111) { - if (mode == AR5K_MODE_11B) - AR5K_REG_ENABLE_BITS(ah, AR5K_TXCFG, - AR5K_TXCFG_B_MODE); - else - AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG, - AR5K_TXCFG_B_MODE); - } - - /* Commit values from EEPROM */ - ath5k_hw_commit_eeprom_settings(ah, channel, ee_mode); - - } else { - /* - * For 5210 we do all initialization using - * initvals, so we don't have to modify - * any settings (5210 also only supports - * a/aturbo modes) - */ - mdelay(1); - /* Disable phy and wait */ - ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT); - mdelay(1); - } /* * Restore saved values @@ -1156,193 +1011,38 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode, /* - * Configure PCU + * Initialize PCU */ - - /* Restore bssid and bssid mask */ - ath5k_hw_set_bssid(ah); - - /* Set PCU config */ - ath5k_hw_set_opmode(ah, op_mode); + ath5k_hw_pcu_init(ah, op_mode, mode); /* Clear any pending interrupts * PISR/SISR Not available on 5210 */ if (ah->ah_version != AR5K_AR5210) ath5k_hw_reg_write(ah, 0xffffffff, AR5K_PISR); - /* Set RSSI/BRSSI thresholds - * - * Note: If we decide to set this value - * dynamically, keep in mind that when AR5K_RSSI_THR - * register is read, it might return 0x40 if we haven't - * written anything to it. Also, BMISS RSSI threshold is zeroed. - * So doing a save/restore procedure here isn't the right - * choice. Instead, store it in ath5k_hw */ - ath5k_hw_reg_write(ah, (AR5K_TUNE_RSSI_THRES | - AR5K_TUNE_BMISS_THRES << - AR5K_RSSI_THR_BMISS_S), - AR5K_RSSI_THR); - - /* MIC QoS support */ - if (ah->ah_mac_srev >= AR5K_SREV_AR2413) { - ath5k_hw_reg_write(ah, 0x000100aa, AR5K_MIC_QOS_CTL); - ath5k_hw_reg_write(ah, 0x00003210, AR5K_MIC_QOS_SEL); - } - - /* QoS NOACK Policy */ - if (ah->ah_version == AR5K_AR5212) { - ath5k_hw_reg_write(ah, - AR5K_REG_SM(2, AR5K_QOS_NOACK_2BIT_VALUES) | - AR5K_REG_SM(5, AR5K_QOS_NOACK_BIT_OFFSET) | - AR5K_REG_SM(0, AR5K_QOS_NOACK_BYTE_OFFSET), - AR5K_QOS_NOACK); - } - - /* - * Configure PHY + * Initialize PHY */ - - /* Set channel on PHY */ - ret = ath5k_hw_channel(ah, channel); - if (ret) + ret = ath5k_hw_phy_init(ah, channel, mode, ee_mode, freq); + if (ret) { + ATH5K_ERR(ah->ah_sc, + "failed to initialize PHY (%i) !\n", ret); return ret; - - /* - * Enable the PHY and wait until completion - * This includes BaseBand and Synthesizer - * activation. - */ - ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT); - - /* - * On 5211+ read activation -> rx delay - * and use it. - * - * TODO: Half/quarter rate support - */ - if (ah->ah_version != AR5K_AR5210) { - u32 delay; - delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) & - AR5K_PHY_RX_DELAY_M; - delay = (channel->hw_value & CHANNEL_CCK) ? - ((delay << 2) / 22) : (delay / 10); - - udelay(100 + (2 * delay)); - } else { - mdelay(1); - } - - /* - * Perform ADC test to see if baseband is ready - * Set TX hold and check ADC test register - */ - phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1); - ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1); - for (i = 0; i <= 20; i++) { - if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10)) - break; - udelay(200); - } - ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1); - - /* - * Start automatic gain control calibration - * - * During AGC calibration RX path is re-routed to - * a power detector so we don't receive anything. - * - * This method is used to calibrate some static offsets - * used together with on-the fly I/Q calibration (the - * one performed via ath5k_hw_phy_calibrate), which doesn't - * interrupt rx path. - * - * While rx path is re-routed to the power detector we also - * start a noise floor calibration to measure the - * card's noise floor (the noise we measure when we are not - * transmitting or receiving anything). - * - * If we are in a noisy environment, AGC calibration may time - * out and/or noise floor calibration might timeout. - */ - AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL, - AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF); - - /* At the same time start I/Q calibration for QAM constellation - * -no need for CCK- */ - ah->ah_calibration = false; - if (!(mode == AR5K_MODE_11B)) { - ah->ah_calibration = true; - AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ, - AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15); - AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, - AR5K_PHY_IQ_RUN); - } - - /* Wait for gain calibration to finish (we check for I/Q calibration - * during ath5k_phy_calibrate) */ - if (ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL, - AR5K_PHY_AGCCTL_CAL, 0, false)) { - ATH5K_ERR(ah->ah_sc, "gain calibration timeout (%uMHz)\n", - channel->center_freq); } - /* Restore antenna mode */ - ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); - - /* Restore slot time and ACK timeouts */ - if (ah->ah_coverage_class > 0) - ath5k_hw_set_coverage_class(ah, ah->ah_coverage_class); - /* * Configure QCUs/DCUs */ + ret = ath5k_hw_init_queues(ah); + if (ret) + return ret; - /* TODO: HW Compression support for data queues */ - /* TODO: Burst prefetch for data queues */ - - /* - * Reset queues and start beacon timers at the end of the reset routine - * This also sets QCU mask on each DCU for 1:1 qcu to dcu mapping - * Note: If we want we can assign multiple qcus on one dcu. - */ - for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) { - ret = ath5k_hw_reset_tx_queue(ah, i); - if (ret) { - ATH5K_ERR(ah->ah_sc, - "failed to reset TX queue #%d\n", i); - return ret; - } - } - - - /* - * Configure DMA/Interrupts - */ /* - * Set Rx/Tx DMA Configuration - * - * Set standard DMA size (128). Note that - * a DMA size of 512 causes rx overruns and tx errors - * on pci-e cards (tested on 5424 but since rx overruns - * also occur on 5416/5418 with madwifi we set 128 - * for all PCI-E cards to be safe). - * - * XXX: need to check 5210 for this - * TODO: Check out tx triger level, it's always 64 on dumps but I - * guess we can tweak it and see how it goes ;-) + * Initialize DMA/Interrupts */ - if (ah->ah_version != AR5K_AR5210) { - AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG, - AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B); - AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG, - AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B); - } + ath5k_hw_dma_init(ah); - /* Pre-enable interrupts on 5211/5212*/ - if (ah->ah_version != AR5K_AR5210) - ath5k_hw_set_imr(ah, ah->ah_imr); /* Enable 32KHz clock function for AR5212+ chips * Set clocks to 32KHz operation and use an |