diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_phy.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_phy.c | 1134 |
1 files changed, 1134 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c new file mode 100644 index 00000000000..80431a2f6dc --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -0,0 +1,1134 @@ +/* + * Copyright (c) 2010 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. + */ + +#include "hw.h" +#include "ar9003_phy.h" + +/** + * ar9003_hw_set_channel - set channel on single-chip device + * @ah: atheros hardware structure + * @chan: + * + * This is the function to change channel on single-chip devices, that is + * all devices after ar9280. + * + * This function takes the channel value in MHz and sets + * hardware channel value. Assumes writes have been enabled to analog bus. + * + * Actual Expression, + * + * For 2GHz channel, + * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17) + * (freq_ref = 40MHz) + * + * For 5GHz channel, + * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10) + * (freq_ref = 40MHz/(24>>amodeRefSel)) + * + * For 5GHz channels which are 5MHz spaced, + * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17) + * (freq_ref = 40MHz) + */ +static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan) +{ + u16 bMode, fracMode = 0, aModeRefSel = 0; + u32 freq, channelSel = 0, reg32 = 0; + struct chan_centers centers; + int loadSynthChannel; + + ath9k_hw_get_channel_centers(ah, chan, ¢ers); + freq = centers.synth_center; + + if (freq < 4800) { /* 2 GHz, fractional mode */ + channelSel = CHANSEL_2G(freq); + /* Set to 2G mode */ + bMode = 1; + } else { + channelSel = CHANSEL_5G(freq); + /* Doubler is ON, so, divide channelSel by 2. */ + channelSel >>= 1; + /* Set to 5G mode */ + bMode = 0; + } + + /* Enable fractional mode for all channels */ + fracMode = 1; + aModeRefSel = 0; + loadSynthChannel = 0; + + reg32 = (bMode << 29); + REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32); + + /* Enable Long shift Select for Synthesizer */ + REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_SYNTH4, + AR_PHY_SYNTH4_LONG_SHIFT_SELECT, 1); + + /* Program Synth. setting */ + reg32 = (channelSel << 2) | (fracMode << 30) | + (aModeRefSel << 28) | (loadSynthChannel << 31); + REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32); + + /* Toggle Load Synth channel bit */ + loadSynthChannel = 1; + reg32 = (channelSel << 2) | (fracMode << 30) | + (aModeRefSel << 28) | (loadSynthChannel << 31); + REG_WRITE(ah, AR_PHY_65NM_CH0_SYNTH7, reg32); + + ah->curchan = chan; + ah->curchan_rad_index = -1; + + return 0; +} + +/** + * ar9003_hw_spur_mitigate - convert baseband spur frequency + * @ah: atheros hardware structure + * @chan: + * + * For single-chip solutions. Converts to baseband spur frequency given the + * input channel frequency and compute register settings below. + * + * Spur mitigation for MRC CCK + */ +static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 spur_freq[4] = { 2420, 2440, 2464, 2480 }; + int cur_bb_spur, negative = 0, cck_spur_freq; + int i; + + /* + * Need to verify range +/- 10 MHz in control channel, otherwise spur + * is out-of-band and can be ignored. + */ + + for (i = 0; i < 4; i++) { + negative = 0; + cur_bb_spur = spur_freq[i] - chan->channel; + + if (cur_bb_spur < 0) { + negative = 1; + cur_bb_spur = -cur_bb_spur; + } + if (cur_bb_spur < 10) { + cck_spur_freq = (int)((cur_bb_spur << 19) / 11); + + if (negative == 1) + cck_spur_freq = -cck_spur_freq; + + cck_spur_freq = cck_spur_freq & 0xfffff; + + REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL, + AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE, + 0x2); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, + 0x1); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, + cck_spur_freq); + + return; + } + } + + REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL, + AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0); + REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT, + AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0); +} + +/* Clean all spur register fields */ +static void ar9003_hw_spur_ofdm_clear(struct ath_hw *ah) +{ + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_SPUR_FREQ_SD, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_SPUR_DELTA_PHASE, 0); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 0); + + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0); + REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK, + AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, 0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A, + AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, 0); + REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK, + AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, 0); + REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK, + AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0); + REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK, + AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A, + AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0); +} + +static void ar9003_hw_spur_ofdm(struct ath_hw *ah, + int freq_offset, + int spur_freq_sd, + int spur_delta_phase, + int spur_subchannel_sd) +{ + int mask_index = 0; + + /* OFDM Spur mitigation */ + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_SPUR_FILTER, 0x1); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_SPUR_FREQ_SD, spur_freq_sd); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_SPUR_DELTA_PHASE, spur_delta_phase); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1); + REG_RMW_FIELD(ah, AR_PHY_TIMING11, + AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_SPUR_RSSI_THRESH, 34); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1); + + if (REG_READ_FIELD(ah, AR_PHY_MODE, + AR_PHY_MODE_DYNAMIC) == 0x1) + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1); + + mask_index = (freq_offset << 4) / 5; + if (mask_index < 0) + mask_index = mask_index - 1; + + mask_index = mask_index & 0x7f; + + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_ENABLE_MASK_PPM, 0x1); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_PILOT_MASK, 0x1); + REG_RMW_FIELD(ah, AR_PHY_TIMING4, + AR_PHY_TIMING4_ENABLE_CHAN_MASK, 0x1); + REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK, + AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A, mask_index); + REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A, + AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A, mask_index); + REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK, + AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A, mask_index); + REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK, + AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A, 0xc); + REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK, + AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A, 0xc); + REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_A, + AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0); + REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, + AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff); +} + +static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah, + struct ath9k_channel *chan, + int freq_offset) +{ + int spur_freq_sd = 0; + int spur_subchannel_sd = 0; + int spur_delta_phase = 0; + + if (IS_CHAN_HT40(chan)) { + if (freq_offset < 0) { + if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL, + AR_PHY_GC_DYN2040_PRI_CH) == 0x0) + spur_subchannel_sd = 1; + else + spur_subchannel_sd = 0; + + spur_freq_sd = ((freq_offset + 10) << 9) / 11; + + } else { + if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL, + AR_PHY_GC_DYN2040_PRI_CH) == 0x0) + spur_subchannel_sd = 0; + else + spur_subchannel_sd = 1; + + spur_freq_sd = ((freq_offset - 10) << 9) / 11; + + } + + spur_delta_phase = (freq_offset << 17) / 5; + + } else { + spur_subchannel_sd = 0; + spur_freq_sd = (freq_offset << 9) /11; + spur_delta_phase = (freq_offset << 18) / 5; + } + + spur_freq_sd = spur_freq_sd & 0x3ff; + spur_delta_phase = spur_delta_phase & 0xfffff; + + ar9003_hw_spur_ofdm(ah, + freq_offset, + spur_freq_sd, + spur_delta_phase, + spur_subchannel_sd); +} + +/* Spur mitigation for OFDM */ +static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + int synth_freq; + int range = 10; + int freq_offset = 0; + int mode; + u8* spurChansPtr; + unsigned int i; + struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; + + if (IS_CHAN_5GHZ(chan)) { + spurChansPtr = &(eep->modalHeader5G.spurChans[0]); + mode = 0; + } + else { + spurChansPtr = &(eep->modalHeader2G.spurChans[0]); + mode = 1; + } + + if (spurChansPtr[0] == 0) + return; /* No spur in the mode */ + + if (IS_CHAN_HT40(chan)) { + range = 19; + if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL, + AR_PHY_GC_DYN2040_PRI_CH) == 0x0) + synth_freq = chan->channel - 10; + else + synth_freq = chan->channel + 10; + } else { + range = 10; + synth_freq = chan->channel; + } + + ar9003_hw_spur_ofdm_clear(ah); + + for (i = 0; spurChansPtr[i] && i < 5; i++) { + freq_offset = FBIN2FREQ(spurChansPtr[i], mode) - synth_freq; + if (abs(freq_offset) < range) { + ar9003_hw_spur_ofdm_work(ah, chan, freq_offset); + break; + } + } +} + +static void ar9003_hw_spur_mitigate(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + ar9003_hw_spur_mitigate_mrc_cck(ah, chan); + ar9003_hw_spur_mitigate_ofdm(ah, chan); +} + +static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 pll; + + pll = SM(0x5, AR_RTC_9300_PLL_REFDIV); + + if (chan && IS_CHAN_HALF_RATE(chan)) + pll |= SM(0x1, AR_RTC_9300_PLL_CLKSEL); + else if (chan && IS_CHAN_QUARTER_RATE(chan)) + pll |= SM(0x2, AR_RTC_9300_PLL_CLKSEL); + + pll |= SM(0x2c, AR_RTC_9300_PLL_DIV); + + return pll; +} + +static void ar9003_hw_set_channel_regs(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 phymode; + u32 enableDacFifo = 0; + + enableDacFifo = + (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO); + + /* Enable 11n HT, 20 MHz */ + phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 | AR_PHY_GC_WALSH | + AR_PHY_GC_SHORT_GI_40 | enableDacFifo; + + /* Configure baseband for dynamic 20/40 operation */ + if (IS_CHAN_HT40(chan)) { + phymode |= AR_PHY_GC_DYN2040_EN; + /* Configure control (primary) channel at +-10MHz */ + if ((chan->chanmode == CHANNEL_A_HT40PLUS) || + (chan->chanmode == CHANNEL_G_HT40PLUS)) + phymode |= AR_PHY_GC_DYN2040_PRI_CH; + + } + + /* make sure we preserve INI settings */ + phymode |= REG_READ(ah, AR_PHY_GEN_CTRL); + /* turn off Green Field detection for STA for now */ + phymode &= ~AR_PHY_GC_GF_DETECT_EN; + + REG_WRITE(ah, AR_PHY_GEN_CTRL, phymode); + + /* Configure MAC for 20/40 operation */ + ath9k_hw_set11nmac2040(ah); + + /* global transmit timeout (25 TUs default)*/ + REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S); + /* carrier sense timeout */ + REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S); +} + +static void ar9003_hw_init_bb(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 synthDelay; + + /* + * Wait for the frequency synth to settle (synth goes on + * via AR_PHY_ACTIVE_EN). Read the phy active delay register. + * Value is in 100ns increments. + */ + synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY; + if (IS_CHAN_B(chan)) + synthDelay = (4 * synthDelay) / 22; + else + synthDelay /= 10; + + /* Activate the PHY (includes baseband activate + synthesizer on) */ + REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); + + /* + * There is an issue if the AP starts the calibration before + * the base band timeout completes. This could result in the + * rx_clear false triggering. As a workaround we add delay an + * extra BASE_ACTIVATE_DELAY usecs to ensure this condition + * does not happen. + */ + udelay(synthDelay + BASE_ACTIVATE_DELAY); +} + +void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx) +{ + switch (rx) { + case 0x5: + REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP, + AR_PHY_SWAP_ALT_CHAIN); + case 0x3: + case 0x1: + case 0x2: + case 0x7: + REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx); + REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx); + break; + default: + break; + } + + REG_WRITE(ah, AR_SELFGEN_MASK, tx); + if (tx == 0x5) { + REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP, + AR_PHY_SWAP_ALT_CHAIN); + } +} + +/* + * Override INI values with chip specific configuration. + */ +static void ar9003_hw_override_ini(struct ath_hw *ah) +{ + u32 val; + + /* + * Set the RX_ABORT and RX_DIS and clear it only after + * RXE is set for MAC. This prevents frames with + * corrupted descriptor status. + */ + REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); + + /* + * For AR9280 and above, there is a new feature that allows + * Multicast search based on both MAC Address and Key ID. By default, + * this feature is enabled. But since the driver is not using this + * feature, we switch it off; otherwise multicast search based on + * MAC addr only will fail. + */ + val = REG_READ(ah, AR_PCU_MISC_MODE2) & (~AR_ADHOC_MCAST_KEYID_ENABLE); + REG_WRITE(ah, AR_PCU_MISC_MODE2, + val | AR_AGG_WEP_ENABLE_FIX | AR_AGG_WEP_ENABLE); +} + +static void ar9003_hw_prog_ini(struct ath_hw *ah, + struct ar5416IniArray *iniArr, + int column) +{ + unsigned int i, regWrites = 0; + + /* New INI format: Array may be undefined (pre, core, post arrays) */ + if (!iniArr->ia_array) + return; + + /* + * New INI format: Pre, core, and post arrays for a given subsystem + * may be modal (> 2 columns) or non-modal (2 columns). Determine if + * the array is non-modal and force the column to 1. + */ + if (column >= iniArr->ia_columns) + column = 1; + + for (i = 0; i < iniArr->ia_rows; i++) { + u32 reg = INI_RA(iniArr, i, 0); + u32 val = INI_RA(iniArr, i, column); + + REG_WRITE(ah, reg, val); + + /* + * Determine if this is a shift register value, and insert the + * configured delay if so. + */ + if (reg >= 0x16000 && reg < 0x17000 + && ah->config.analog_shiftreg) + udelay(100); + + DO_DELAY(regWrites); + } +} + +static int ar9003_hw_process_ini(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah); + unsigned int regWrites = 0, i; + struct ieee80211_channel *channel = chan->chan; + u32 modesIndex, freqIndex; + + switch (chan->chanmode) { + case CHANNEL_A: + case CHANNEL_A_HT20: + modesIndex = 1; + freqIndex = 1; + break; + case CHANNEL_A_HT40PLUS: + case CHANNEL_A_HT40MINUS: + modesIndex = 2; + freqIndex = 1; + break; + case CHANNEL_G: + case CHANNEL_G_HT20: + case CHANNEL_B: + modesIndex = 4; + freqIndex = 2; + break; + case CHANNEL_G_HT40PLUS: + case CHANNEL_G_HT40MINUS: + modesIndex = 3; + freqIndex = 2; + break; + + default: + return -EINVAL; + } + + for (i = 0; i < ATH_INI_NUM_SPLIT; i++) { + ar9003_hw_prog_ini(ah, &ah->iniSOC[i], modesIndex); + ar9003_hw_prog_ini(ah, &ah->iniMac[i], modesIndex); + ar9003_hw_prog_ini(ah, &ah->iniBB[i], modesIndex); + ar9003_hw_prog_ini(ah, &ah->iniRadio[i], modesIndex); + } + + REG_WRITE_ARRAY(&ah->iniModesRxGain, 1, regWrites); + REG_WRITE_ARRAY(&ah->iniModesTxGain, modesIndex, regWrites); + + /* + * For 5GHz channels requiring Fast Clock, apply + * different modal values. + */ + if (IS_CHAN_A_FAST_CLOCK(ah, chan)) + REG_WRITE_ARRAY(&ah->iniModesAdditional, + modesIndex, regWrites); + + ar9003_hw_override_ini(ah); + ar9003_hw_set_channel_regs(ah, chan); + ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask); + + /* Set TX power */ + ah->eep_ops->set_txpower(ah, chan, + ath9k_regd_get_ctl(regulatory, chan), + channel->max_antenna_gain * 2, + channel->max_power * 2, + min((u32) MAX_RATE_POWER, + (u32) regulatory->power_limit)); + + return 0; +} + +static void ar9003_hw_set_rfmode(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 rfMode = 0; + + if (chan == NULL) + return; + + rfMode |= (IS_CHAN_B(chan) || IS_CHAN_G(chan)) + ? AR_PHY_MODE_DYNAMIC : AR_PHY_MODE_OFDM; + + if (IS_CHAN_A_FAST_CLOCK(ah, chan)) + rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE); + + REG_WRITE(ah, AR_PHY_MODE, rfMode); +} + +static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah) +{ + REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); +} + +static void ar9003_hw_set_delta_slope(struct ath_hw *ah, + struct ath9k_channel *chan) +{ + u32 coef_scaled, ds_coef_exp, ds_coef_man; + u32 clockMhzScaled = 0x64000000; + struct chan_centers centers; + + /* + * half and quarter rate can divide the scaled clock by 2 or 4 + * scale for selected channel bandwidth + */ + if (IS_CHAN_HALF_RATE(chan)) + clockMhzScaled = clockMhzScaled >> 1; + else if (IS_CHAN_QUARTER_RATE(chan)) + clockMhzScaled = clockMhzScaled >> 2; + + /* + * ALGO -> coef = 1e8/fcarrier*fclock/40; + * scaled coef to provide precision for this floating calculation + */ + ath9k_hw_get_channel_centers(ah, chan, ¢ers); + coef_scaled = clockMhzScaled / centers.synth_center; + + ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man, + &ds_coef_exp); + + REG_RMW_FIELD(ah, AR_PHY_TIMING3, + AR_PHY_TIMING3_DSC_MAN, ds_coef_man); + REG_RMW_FIELD(ah, AR_PHY_TIMING3, + AR_PHY_TIMING3_DSC_EXP, ds_coef_exp); + + /* + * For Short GI, + * scaled coeff is 9/10 that of normal coeff + */ + coef_scaled = (9 * coef_scaled) / 10; + + ath9k_hw_get_delta_slope_vals(ah, coef_scaled, &ds_coef_man, + &ds_coef_exp); + + /* for short gi */ + REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA, + AR_PHY_SGI_DSC_MAN, ds_coef_man); + REG_RMW_FIELD(ah, AR_PHY_SGI_DELTA, + AR_PHY_SGI_DSC_EXP, ds_coef_exp); +} + +static bool ar9003_hw_rfbus_req(struct ath_hw *ah) +{ + REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_EN); + return ath9k_hw_wait(ah, AR_PHY_RFBUS_GRANT, AR_PHY_RFBUS_GRANT_EN, + AR_PHY_RFBUS_GRANT_EN, AH_WAIT_TIMEOUT); +} + +/* + * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN). + * Read the phy active delay register. Value is in 100ns increments. + */ +static void ar9003_hw_rfbus_done(struct ath_hw *ah) +{ + u32 synthDelay = REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY; + if (IS_CHAN_B(ah->curchan)) + synthDelay = (4 * synthDelay) / 22; + else + synthDelay /= 10; + + udelay(synthDelay + BASE_ACTIVATE_DELAY); + + REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0); +} + +/* + * Set the interrupt and GPIO values so the ISR can disable RF + * on a switch signal. Assumes GPIO port and interrupt polarity + * are set prior to call. + */ +static void ar9003_hw_enable_rfkill(struct ath_hw *ah) +{ + /* Connect rfsilent_bb_l to baseband */ + REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, + AR_GPIO_INPUT_EN_VAL_RFSILENT_BB); + /* Set input mux for rfsilent_bb_l to GPIO #0 */ + REG_CLR_BIT(ah, AR_GPIO_INPUT_MUX2, + AR_GPIO_INPUT_MUX2_RFSILENT); + + /* + * Configure the desired GPIO port for input and + * enable baseband rf silence. + */ + ath9k_hw_cfg_gpio_input(ah, ah->rfkill_gpio); + REG_SET_BIT(ah, AR_PHY_TEST, RFSILENT_BB); +} + +static void ar9003_hw_set_diversity(struct ath_hw *ah, bool value) +{ + u32 v = REG_READ(ah, AR_PHY_CCK_DETECT); + if (value) + v |= AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV; + else + v &= ~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV; + REG_WRITE(ah, AR_PHY_CCK_DETECT, v); +} + +static bool ar9003_hw_ani_control(struct ath_hw *ah, + enum ath9k_ani_cmd cmd, int param) +{ + struct ar5416AniState *aniState = ah->curani; + struct ath_common *common = ath9k_hw_common(ah); + + switch (cmd & ah->ani_function) { + case ATH9K_ANI_NOISE_IMMUNITY_LEVEL:{ + u32 level = param; + + if (level >= ARRAY_SIZE(ah->totalSizeDesired)) { + ath_print(common, ATH_DBG_ANI, + "level out of range (%u > %u)\n", + level, + (unsigned)ARRAY_SIZE(ah->totalSizeDesired)); + return false; + } + + REG_RMW_FIELD(ah, AR_PHY_DESIRED_SZ, + AR_PHY_DESIRED_SZ_TOT_DES, + ah->totalSizeDesired[level]); + REG_RMW_FIELD(ah, AR_PHY_AGC, + AR_PHY_AGC_COARSE_LOW, + ah->coarse_low[level]); + REG_RMW_FIELD(ah, AR_PHY_AGC, + AR_PHY_AGC_COARSE_HIGH, + ah->coarse_high[level]); + REG_RMW_FIELD(ah, AR_PHY_FIND_SIG, + AR_PHY_FIND_SIG_FIRPWR, ah->firpwr[level]); + + if (level > aniState->noiseImmunityLevel) + ah->stats.ast_ani_niup++; + else if (level < aniState->noiseImmunityLevel) + ah->stats.ast_ani_nidown++; + aniState->noiseImmunityLevel = level; + break; + } + case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{ + const int m1ThreshLow[] = { 127, 50 }; + const int m2ThreshLow[] = { 127, 40 }; + const int m1Thresh[] = { 127, 0x4d }; + const int m2Thresh[] = { 127, 0x40 }; + const int m2CountThr[] = { 31, 16 }; + const int m2CountThrLow[] = { 63, 48 }; + u32 on = param ? 1 : 0; + + REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW, + AR_PHY_SFCORR_LOW_M1_THRESH_LOW, + m1ThreshLow[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW, + AR_PHY_SFCORR_LOW_M2_THRESH_LOW, + m2ThreshLow[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR, + AR_PHY_SFCORR_M1_THRESH, m1Thresh[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR, + AR_PHY_SFCORR_M2_THRESH, m2Thresh[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR, + AR_PHY_SFCORR_M2COUNT_THR, m2CountThr[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW, + AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW, + m2CountThrLow[on]); + + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1ThreshLow[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2ThreshLow[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_M1_THRESH, m1Thresh[on]); + REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, + AR_PHY_SFCORR_EXT_M2_THRESH, m2Thresh[on]); + + if (on) + REG_SET_BIT(ah, AR_PHY_SFCORR_LOW, + AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW); + else + REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW, + AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW); + + if (!on != aniState->ofdmWeakSigDetectOff) { + if (on) + ah->stats.ast_ani_ofdmon++; + else + ah->stats.ast_ani_ofdmoff++; + aniState->ofdmWeakSigDetectOff = !on; + } + break; + } + case ATH9K_ANI_CCK_WEAK_SIGNAL_THR:{ + const int weakSigThrCck[] = { 8, 6 }; + u32 high = param ? 1 : 0; + + REG_RMW_FIELD(ah, AR_PHY_CCK_DETECT, + AR_PHY_CCK_DETECT_WEAK_SIG_THR_CCK, + weakSigThrCck[high]); + if (high != aniState->cckWeakSigThreshold) { + if (high) + ah->stats.ast_ani_cckhigh++; + else + ah->stats.ast_ani_ccklow++; + aniState->cckWeakSigThreshold = high; + } + break; + } + case ATH9K_ANI_FIRSTEP_LEVEL:{ + const int firstep[] = { 0, 4, 8 }; + u32 level = param; + + if (level >= ARRAY_SIZE(firstep)) { + ath_print(common, ATH_DBG_ANI, + "level out of range (%u > %u)\n", + level, + (unsigned) ARRAY_SIZE(firstep)); + return false; + } + REG_RMW_FIELD(ah, AR_PHY_FIND_SIG, + AR_PHY_FIND_SIG_FIRSTEP, + firstep[level]); + if (level > aniState->firstepLevel) + ah->stats.ast_ani_stepup++; + else if (level < aniState->firstepLevel) + ah->stats.ast_ani_stepdown++; + aniState->firstepLevel = level; + break; + } + case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{ + const int cycpwrThr1[] = { 2, 4, 6, 8, 10, 12, 14, 16 }; + u32 level = param; + + if (level >= ARRAY_SIZE(cycpwrThr1)) { + ath_print(common, ATH_DBG_ANI, + "level out of range (%u > %u)\n", + level, + (unsigned) ARRAY_SIZE(cycpwrThr1)); + return false; + } + REG_RMW_FIELD(ah, AR_PHY_TIMING5, + AR_PHY_TIMING5_CYCPWR_THR1, + cycpwrThr1[level]); + if (level > aniState->spurImmunityLevel) + ah->stats.ast_ani_spurup++; + else if (level < aniState->spurImmunityLevel) + ah->stats.ast_ani_spurdown++; + aniState->spurImmunityLevel = level; + break; + } + case ATH9K_ANI_PRESENT: + break; + default: + ath_print(common, ATH_DBG_ANI, + "invalid cmd %u\n", cmd); + return false; + } + + ath_print(common, ATH_DBG_ANI, "ANI parameters:\n"); + ath_print(common, ATH_DBG_ANI, + "noiseImmunityLevel=%d, spurImmunityLevel=%d, " + "ofdmWeakSigDetectOff=%d\n", + aniState->noiseImmunityLevel, + aniState->spurImmunityLevel, + !aniState->ofdmWeakSigDetectOff); + ath_print(common, ATH_DBG_ANI, + "cckWeakSigThreshold=%d, " + "firstepLevel=%d, listenTime=%d\n", + aniState->cckWeakSigThreshold, + aniState->firstepLevel, + aniState->listenTime); + ath_print(common, ATH_DBG_ANI, + "cycleCount=%d, ofdmPhyErrCount=%d, cckPhyErrCount=%d\n\n", + aniState->cycleCount, + aniState->ofdmPhyErrCount, + aniState->cckPhyErrCount); + + return true; +} + +static void ar9003_hw_nf_sanitize_2g(struct ath_hw *ah, s16 *nf) +{ + struct ath_common *common = ath9k_hw_common(ah); + + if (*nf > ah->nf_2g_max) { + ath_print(common, ATH_DBG_CALIBRATE, + "2 GHz NF (%d) > MAX (%d), " + "correcting to MAX", + *nf, ah->nf_2g_max); + *nf = ah->nf_2g_max; + } else if (*nf < ah->nf_2g_min) { + ath_print(common, ATH_DBG_CALIBRATE, + "2 GHz NF (%d) < MIN (%d), " + "correcting to MIN", + *nf, ah->nf_2g_min); + *nf = ah->nf_2g_min; + } +} + +static void ar9003_hw_nf_sanitize_5g(struct ath_hw *ah, s16 *nf) +{ + struct ath_common *common = ath9k_hw_common(ah); + + if (*nf > ah->nf_5g_max) { + ath_print(common, ATH_DBG_CALIBRATE, + "5 GHz NF (%d) > MAX (%d), " + "correcting to MAX", + *nf, ah->nf_5g_max); + *nf = ah->nf_5g_max; + } else if (*nf < ah->nf_5g_min) { + ath_print(common, ATH_DBG_CALIBRATE, + "5 GHz NF (%d) < MIN (%d), " + "correcting to MIN", + *nf, ah->nf_5g_min); + *nf = ah->nf_5g_min; + } +} + +static void ar9003_hw_nf_sanitize(struct ath_hw *ah, s16 *nf) +{ + if (IS_CHAN_2GHZ(ah->curchan)) + ar9003_hw_nf_sanitize_2g(ah, nf); + else + ar9003_hw_nf_sanitize_5g(ah, nf); +} + +static void ar9003_hw_do_getnf(struct ath_hw *ah, + int16_t nfarray[NUM_NF_READINGS]) +{ + struct ath_common *common = ath9k_hw_common(ah); + int16_t nf; + + nf = MS(REG_READ(ah, AR_PHY_CCA_0), AR_PHY_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ctl] [chain 0] is %d\n", nf); + nfarray[0] = nf; + + nf = MS(REG_READ(ah, AR_PHY_CCA_1), AR_PHY_CH1_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ctl] [chain 1] is %d\n", nf); + nfarray[1] = nf; + + nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ctl] [chain 2] is %d\n", nf); + nfarray[2] = nf; + + nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ext] [chain 0] is %d\n", nf); + nfarray[3] = nf; + + nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_1), AR_PHY_CH1_EXT_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ext] [chain 1] is %d\n", nf); + nfarray[4] = nf; + + nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_2), AR_PHY_CH2_EXT_MINCCA_PWR); + if (nf & 0x100) + nf = 0 - ((nf ^ 0x1ff) + 1); + ar9003_hw_nf_sanitize(ah, &nf); + ath_print(common, ATH_DBG_CALIBRATE, + "NF calibrated [ext] [chain 2] is %d\n", nf); + nfarray[5] = nf; +} + +void ar9003_hw_set_nf_limits(struct ath_hw *ah) +{ + ah->nf_2g_max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ; + ah->nf_2g_min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ; + ah->nf_5g_max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ; + ah->nf_5g_min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ; +} + +/* + * Find out which of the RX chains are enabled + */ +static u32 ar9003_hw_get_rx_chainmask(struct ath_hw *ah) +{ + u32 chain = REG_READ(ah, AR_PHY_RX_CHAINMASK); + /* + * The bits [2:0] indicate the rx chain mask and are to be + * interpreted as follows: + * 00x => Only chain 0 is enabled + * 01x => Chain 1 and 0 enabled + * 1xx => Chain 2,1 and 0 enabled + */ + return chain & 0x7; +} + +static void ar9003_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan) +{ + struct ath9k_nfcal_hist *h; + unsigned i, j; + int32_t val; + const u32 ar9300_cca_regs[6] = { + AR_PHY_CCA_0, + AR_PHY_CCA_1, + AR_PHY_CCA_2, + AR_PHY_EXT_CCA, + AR_PHY_EXT_CCA_1, + AR_PHY_EXT_CCA_2, + }; + u8 chainmask, rx_chain_status; + struct ath_common *common = ath9k_hw_common(ah); + + rx_chain_status = ar9003_hw_get_rx_chainmask(ah); + + chainmask = 0x3F; + h = ah->nfCalHist; + + for (i = 0; i < NUM_NF_READINGS; i++) { + if (chainmask & (1 << i)) { + val = REG_READ(ah, ar9300_cca_regs[i]); + val &= 0xFFFFFE00; + val |= (((u32) (h[i].privNF) << 1) & 0x1ff); + REG_WRITE(ah, ar9300_cca_regs[i], val); + } + } + + /* + * Load software filtered NF value into baseband internal minCCApwr + * variable. + */ + REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, + AR_PHY_AGC_CONTROL_ENABLE_NF); + REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, + AR_PHY_AGC_CONTROL_NO_UPDATE_NF); + REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); + + /* + * Wait for load to complete, should be fast, a few 10s of us. + * The max delay was changed from an original 250us to 10000us + * since 250us often results in NF load timeout and causes deaf + * condition during stress testing 12/12/2009 + */ + for (j = 0; j < 1000; j++) { + if ((REG_READ(ah, AR_PHY_AGC_CONTROL) & + AR_PHY_AGC_CONTROL_NF) == 0) + break; + udelay(10); + } + + /* + * We timed out waiting for the noisefloor to load, probably due to an + * in-progress rx. Simply return here and allow the load plenty of time + * to complete before the next calibration interval. We need to avoid + * trying to load -50 (which happens below) while the previous load is + * still in progress as this can cause rx deafness. Instead by returning + * here, the baseband nf cal will just be capped by our present + * noisefloor until the next calibration timer. + */ + if (j == 1000) { + ath_print(common, ATH_DBG_ANY, "Timeout while waiting for nf " + "to load: AR_PHY_AGC_CONTROL=0x%x\n", + REG_READ(ah, AR_PHY_AGC_CONTROL)); + return; + } + + /* + * Restore maxCCAPower register parameter again so that we're not capped + * by the median we just loaded. This will be initial (and max) value + * of next noise floor calibration the baseband does. + */ + for (i = 0; i < NUM_NF_READINGS; i++) { + if (chainmask & (1 << i)) { + val = REG_READ(ah, ar9300_cca_regs[i]); + val &= 0xFFFFFE00; + val |= (((u32) (-50) << 1) & 0x1ff); + REG_WRITE(ah, ar9300_cca_regs[i], val); + } + } +} + +void ar9003_hw_attach_phy_ops(struct ath_hw *ah) +{ + struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); + + priv_ops->rf_set_freq = ar9003_hw_set_channel; + priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate; + priv_ops->compute_pll_control = ar9003_hw_compute_pll_control; + priv_ops->set_channel_regs = ar9003_hw_set_channel_regs; + priv_ops->init_bb = ar9003_hw_init_bb; + priv_ops->process_ini = ar9003_hw_process_ini; + priv_ops->set_rfmode = ar9003_hw_set_rfmode; + priv_ops->mark_phy_inactive = ar9003_hw_mark_phy_inactive; + priv_ops->set_delta_slope = ar9003_hw_set_delta_slope; + priv_ops->rfbus_req = ar9003_hw_rfbus_req; + priv_ops->rfbus_done = ar9003_hw_rfbus_done; + priv_ops->enable_rfkill = ar9003_hw_enable_rfkill; + priv_ops->set_diversity = ar9003_hw_set_diversity; + priv_ops->ani_control = ar9003_hw_ani_control; + priv_ops->do_getnf = ar9003_hw_do_getnf; + priv_ops->loadnf = ar9003_hw_loadnf; +} |