ar9003_phy.c 41.6 KB
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/*
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 * Copyright (c) 2010-2011 Atheros Communications Inc.
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 *
 * 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"
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#include "ar9003_phy.h"
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static const int firstep_table[] =
/* level:  0   1   2   3   4   5   6   7   8  */
	{ -4, -2,  0,  2,  4,  6,  8, 10, 12 }; /* lvl 0-8, default 2 */

static const int cycpwrThr1_table[] =
/* level:  0   1   2   3   4   5   6   7   8  */
	{ -6, -4, -2,  0,  2,  4,  6,  8 };     /* lvl 0-7, default 3 */

/*
 * register values to turn OFDM weak signal detection OFF
 */
static const int m1ThreshLow_off = 127;
static const int m2ThreshLow_off = 127;
static const int m1Thresh_off = 127;
static const int m2Thresh_off = 127;
static const int m2CountThr_off =  31;
static const int m2CountThrLow_off =  63;
static const int m1ThreshLowExt_off = 127;
static const int m2ThreshLowExt_off = 127;
static const int m1ThreshExt_off = 127;
static const int m2ThreshExt_off = 127;

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/**
 * 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)
{
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	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, &centers);
	freq = centers.synth_center;

	if (freq < 4800) {     /* 2 GHz, fractional mode */
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		if (AR_SREV_9330(ah)) {
			u32 chan_frac;
			u32 div;

			if (ah->is_clk_25mhz)
				div = 75;
			else
				div = 120;

			channelSel = (freq * 4) / div;
			chan_frac = (((freq * 4) % div) * 0x20000) / div;
			channelSel = (channelSel << 17) | chan_frac;
		} else if (AR_SREV_9485(ah)) {
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			u32 chan_frac;

			/*
			 * freq_ref = 40 / (refdiva >> amoderefsel); where refdiva=1 and amoderefsel=0
			 * ndiv = ((chan_mhz * 4) / 3) / freq_ref;
			 * chansel = int(ndiv), chanfrac = (ndiv - chansel) * 0x20000
			 */
			channelSel = (freq * 4) / 120;
			chan_frac = (((freq * 4) % 120) * 0x20000) / 120;
			channelSel = (channelSel << 17) | chan_frac;
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		} else if (AR_SREV_9340(ah)) {
			if (ah->is_clk_25mhz) {
				u32 chan_frac;

				channelSel = (freq * 2) / 75;
				chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
				channelSel = (channelSel << 17) | chan_frac;
			} else
				channelSel = CHANSEL_2G(freq) >> 1;
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		} else
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			channelSel = CHANSEL_2G(freq);
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		/* Set to 2G mode */
		bMode = 1;
	} else {
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		if (AR_SREV_9340(ah) && ah->is_clk_25mhz) {
			u32 chan_frac;

			channelSel = (freq * 2) / 75;
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			chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
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			channelSel = (channelSel << 17) | chan_frac;
		} else {
			channelSel = CHANSEL_5G(freq);
			/* Doubler is ON, so, divide channelSel by 2. */
			channelSel >>= 1;
		}
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		/* 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;

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	return 0;
}

/**
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 * ar9003_hw_spur_mitigate_mrc_cck - convert baseband spur frequency
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 * @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
 */
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static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
					    struct ath9k_channel *chan)
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{
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	static const u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
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	int cur_bb_spur, negative = 0, cck_spur_freq;
	int i;
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	int range, max_spur_cnts, synth_freq;
	u8 *spur_fbin_ptr = NULL;
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	/*
	 * Need to verify range +/- 10 MHz in control channel, otherwise spur
	 * is out-of-band and can be ignored.
	 */

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	if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah)) {
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		spur_fbin_ptr = ar9003_get_spur_chan_ptr(ah,
							 IS_CHAN_2GHZ(chan));
		if (spur_fbin_ptr[0] == 0) /* No spur */
			return;
		max_spur_cnts = 5;
		if (IS_CHAN_HT40(chan)) {
			range = 19;
			if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
					   AR_PHY_GC_DYN2040_PRI_CH) == 0)
				synth_freq = chan->channel + 10;
			else
				synth_freq = chan->channel - 10;
		} else {
			range = 10;
			synth_freq = chan->channel;
		}
	} else {
		range = 10;
		max_spur_cnts = 4;
		synth_freq = chan->channel;
	}

	for (i = 0; i < max_spur_cnts; i++) {
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		negative = 0;
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		if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
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			cur_bb_spur = FBIN2FREQ(spur_fbin_ptr[i],
					IS_CHAN_2GHZ(chan)) - synth_freq;
		else
			cur_bb_spur = spur_freq[i] - synth_freq;
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		if (cur_bb_spur < 0) {
			negative = 1;
			cur_bb_spur = -cur_bb_spur;
		}
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		if (cur_bb_spur < range) {
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			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);
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}

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/* 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);

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	for (i = 0; i < AR_EEPROM_MODAL_SPURS && spurChansPtr[i]; i++) {
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		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);
}

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static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
					 struct ath9k_channel *chan)
{
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	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);

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	pll |= SM(0x2c, AR_RTC_9300_PLL_DIV);
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	return pll;
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}

static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
				       struct ath9k_channel *chan)
{
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	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);
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}

static void ar9003_hw_init_bb(struct ath_hw *ah,
			      struct ath9k_channel *chan)
{
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	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);
541 542
}

543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559
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;
	}

560 561 562 563 564
	if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) && (tx == 0x7))
		REG_WRITE(ah, AR_SELFGEN_MASK, 0x3);
	else
		REG_WRITE(ah, AR_SELFGEN_MASK, tx);

565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618
	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);

619
		REG_WRITE(ah, reg, val);
620

621 622 623 624
		DO_DELAY(regWrites);
	}
}

625 626 627
static int ar9003_hw_process_ini(struct ath_hw *ah,
				 struct ath9k_channel *chan)
{
628 629 630
	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
	unsigned int regWrites = 0, i;
	struct ieee80211_channel *channel = chan->chan;
631
	u32 modesIndex;
632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669

	switch (chan->chanmode) {
	case CHANNEL_A:
	case CHANNEL_A_HT20:
		modesIndex = 1;
		break;
	case CHANNEL_A_HT40PLUS:
	case CHANNEL_A_HT40MINUS:
		modesIndex = 2;
		break;
	case CHANNEL_G:
	case CHANNEL_G_HT20:
	case CHANNEL_B:
		modesIndex = 4;
		break;
	case CHANNEL_G_HT40PLUS:
	case CHANNEL_G_HT40MINUS:
		modesIndex = 3;
		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.
	 */
670
	if (IS_CHAN_A_FAST_CLOCK(ah, chan))
671 672 673
		REG_WRITE_ARRAY(&ah->iniModesAdditional,
				modesIndex, regWrites);

674 675 676
	if (AR_SREV_9300(ah))
		REG_WRITE_ARRAY(&ah->iniModesAdditional, 1, regWrites);

677 678 679
	if (AR_SREV_9340(ah) && !ah->is_clk_25mhz)
		REG_WRITE_ARRAY(&ah->iniModesAdditional_40M, 1, regWrites);

680 681 682 683 684 685 686 687 688 689
	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,
690
				 (u32) regulatory->power_limit), false);
691 692

	return 0;
693 694 695 696 697
}

static void ar9003_hw_set_rfmode(struct ath_hw *ah,
				 struct ath9k_channel *chan)
{
698 699 700 701 702 703 704 705
	u32 rfMode = 0;

	if (chan == NULL)
		return;

	rfMode |= (IS_CHAN_B(chan) || IS_CHAN_G(chan))
		? AR_PHY_MODE_DYNAMIC : AR_PHY_MODE_OFDM;

706
	if (IS_CHAN_A_FAST_CLOCK(ah, chan))
707 708 709
		rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);

	REG_WRITE(ah, AR_PHY_MODE, rfMode);
710 711 712 713
}

static void ar9003_hw_mark_phy_inactive(struct ath_hw *ah)
{
714
	REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
715 716 717 718 719
}

static void ar9003_hw_set_delta_slope(struct ath_hw *ah,
				      struct ath9k_channel *chan)
{
720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
	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, &centers);
	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);
762 763 764 765
}

static bool ar9003_hw_rfbus_req(struct ath_hw *ah)
{
766 767 768
	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);
769 770
}

771 772 773 774
/*
 * 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.
 */
775 776
static void ar9003_hw_rfbus_done(struct ath_hw *ah)
{
777 778 779 780 781 782 783 784 785
	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);
786 787 788 789
}

static void ar9003_hw_set_diversity(struct ath_hw *ah, bool value)
{
790 791 792 793 794 795
	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);
796 797
}

798 799 800
static bool ar9003_hw_ani_control(struct ath_hw *ah,
				  enum ath9k_ani_cmd cmd, int param)
{
801
	struct ath_common *common = ath9k_hw_common(ah);
802
	struct ath9k_channel *chan = ah->curchan;
803
	struct ar5416AniState *aniState = &chan->ani;
804
	s32 value, value2;
805 806 807

	switch (cmd & ah->ani_function) {
	case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
808 809 810 811 812 813 814
		/*
		 * on == 1 means ofdm weak signal detection is ON
		 * on == 1 is the default, for less noise immunity
		 *
		 * on == 0 means ofdm weak signal detection is OFF
		 * on == 0 means more noise imm
		 */
815
		u32 on = param ? 1 : 0;
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
		/*
		 * make register setting for default
		 * (weak sig detect ON) come from INI file
		 */
		int m1ThreshLow = on ?
			aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
		int m2ThreshLow = on ?
			aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
		int m1Thresh = on ?
			aniState->iniDef.m1Thresh : m1Thresh_off;
		int m2Thresh = on ?
			aniState->iniDef.m2Thresh : m2Thresh_off;
		int m2CountThr = on ?
			aniState->iniDef.m2CountThr : m2CountThr_off;
		int m2CountThrLow = on ?
			aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
		int m1ThreshLowExt = on ?
			aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
		int m2ThreshLowExt = on ?
			aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
		int m1ThreshExt = on ?
			aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
		int m2ThreshExt = on ?
			aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
840 841 842

		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
			      AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
843
			      m1ThreshLow);
844 845
		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
			      AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
846
			      m2ThreshLow);
847
		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
848
			      AR_PHY_SFCORR_M1_THRESH, m1Thresh);
849
		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
850
			      AR_PHY_SFCORR_M2_THRESH, m2Thresh);
851
		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
852
			      AR_PHY_SFCORR_M2COUNT_THR, m2CountThr);
853 854
		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
			      AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
855
			      m2CountThrLow);
856 857

		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
858
			      AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1ThreshLowExt);
859
		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
860
			      AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2ThreshLowExt);
861
		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
862
			      AR_PHY_SFCORR_EXT_M1_THRESH, m1ThreshExt);
863
		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
864
			      AR_PHY_SFCORR_EXT_M2_THRESH, m2ThreshExt);
865 866 867 868 869 870 871 872 873

		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) {
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Joe Perches 已提交
874 875 876 877 878 879
			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: ofdm weak signal: %s=>%s\n",
				chan->channel,
				!aniState->ofdmWeakSigDetectOff ?
				"on" : "off",
				on ? "on" : "off");
880 881 882 883 884 885 886 887 888 889 890
			if (on)
				ah->stats.ast_ani_ofdmon++;
			else
				ah->stats.ast_ani_ofdmoff++;
			aniState->ofdmWeakSigDetectOff = !on;
		}
		break;
	}
	case ATH9K_ANI_FIRSTEP_LEVEL:{
		u32 level = param;

891
		if (level >= ARRAY_SIZE(firstep_table)) {
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892 893 894
			ath_dbg(common, ATH_DBG_ANI,
				"ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
				level, ARRAY_SIZE(firstep_table));
895 896
			return false;
		}
897 898 899 900 901 902 903 904 905 906 907 908

		/*
		 * make register setting relative to default
		 * from INI file & cap value
		 */
		value = firstep_table[level] -
			firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
			aniState->iniDef.firstep;
		if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
			value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
		if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
			value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
909 910
		REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
			      AR_PHY_FIND_SIG_FIRSTEP,
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
			      value);
		/*
		 * we need to set first step low register too
		 * make register setting relative to default
		 * from INI file & cap value
		 */
		value2 = firstep_table[level] -
			 firstep_table[ATH9K_ANI_FIRSTEP_LVL_NEW] +
			 aniState->iniDef.firstepLow;
		if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
			value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
		if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
			value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;

		REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
			      AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);

		if (level != aniState->firstepLevel) {
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929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944
			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
				chan->channel,
				aniState->firstepLevel,
				level,
				ATH9K_ANI_FIRSTEP_LVL_NEW,
				value,
				aniState->iniDef.firstep);
			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: level %d=>%d[def:%d] firstep_low[level]=%d ini=%d\n",
				chan->channel,
				aniState->firstepLevel,
				level,
				ATH9K_ANI_FIRSTEP_LVL_NEW,
				value2,
				aniState->iniDef.firstepLow);
945 946 947 948 949 950
			if (level > aniState->firstepLevel)
				ah->stats.ast_ani_stepup++;
			else if (level < aniState->firstepLevel)
				ah->stats.ast_ani_stepdown++;
			aniState->firstepLevel = level;
		}
951 952 953 954 955
		break;
	}
	case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
		u32 level = param;

956
		if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
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957 958 959
			ath_dbg(common, ATH_DBG_ANI,
				"ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
				level, ARRAY_SIZE(cycpwrThr1_table));
960 961
			return false;
		}
962 963 964 965 966 967 968 969 970 971 972
		/*
		 * make register setting relative to default
		 * from INI file & cap value
		 */
		value = cycpwrThr1_table[level] -
			cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
			aniState->iniDef.cycpwrThr1;
		if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
			value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
		if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
			value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
973 974
		REG_RMW_FIELD(ah, AR_PHY_TIMING5,
			      AR_PHY_TIMING5_CYCPWR_THR1,
975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992
			      value);

		/*
		 * set AR_PHY_EXT_CCA for extension channel
		 * make register setting relative to default
		 * from INI file & cap value
		 */
		value2 = cycpwrThr1_table[level] -
			 cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL_NEW] +
			 aniState->iniDef.cycpwrThr1Ext;
		if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
			value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
		if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
			value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
		REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
			      AR_PHY_EXT_CYCPWR_THR1, value2);

		if (level != aniState->spurImmunityLevel) {
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			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: level %d=>%d[def:%d] cycpwrThr1[level]=%d ini=%d\n",
				chan->channel,
				aniState->spurImmunityLevel,
				level,
				ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
				value,
				aniState->iniDef.cycpwrThr1);
			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: level %d=>%d[def:%d] cycpwrThr1Ext[level]=%d ini=%d\n",
				chan->channel,
				aniState->spurImmunityLevel,
				level,
				ATH9K_ANI_SPUR_IMMUNE_LVL_NEW,
				value2,
				aniState->iniDef.cycpwrThr1Ext);
1009 1010 1011 1012 1013 1014
			if (level > aniState->spurImmunityLevel)
				ah->stats.ast_ani_spurup++;
			else if (level < aniState->spurImmunityLevel)
				ah->stats.ast_ani_spurdown++;
			aniState->spurImmunityLevel = level;
		}
1015 1016
		break;
	}
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027
	case ATH9K_ANI_MRC_CCK:{
		/*
		 * is_on == 1 means MRC CCK ON (default, less noise imm)
		 * is_on == 0 means MRC CCK is OFF (more noise imm)
		 */
		bool is_on = param ? 1 : 0;
		REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
			      AR_PHY_MRC_CCK_ENABLE, is_on);
		REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
			      AR_PHY_MRC_CCK_MUX_REG, is_on);
		if (!is_on != aniState->mrcCCKOff) {
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			ath_dbg(common, ATH_DBG_ANI,
				"** ch %d: MRC CCK: %s=>%s\n",
				chan->channel,
				!aniState->mrcCCKOff ? "on" : "off",
				is_on ? "on" : "off");
1033 1034 1035 1036 1037 1038 1039 1040
		if (is_on)
			ah->stats.ast_ani_ccklow++;
		else
			ah->stats.ast_ani_cckhigh++;
		aniState->mrcCCKOff = !is_on;
		}
	break;
	}
1041 1042 1043
	case ATH9K_ANI_PRESENT:
		break;
	default:
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		ath_dbg(common, ATH_DBG_ANI, "invalid cmd %u\n", cmd);
1045 1046 1047
		return false;
	}

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	ath_dbg(common, ATH_DBG_ANI,
		"ANI parameters: SI=%d, ofdmWS=%s FS=%d MRCcck=%s listenTime=%d ofdmErrs=%d cckErrs=%d\n",
		aniState->spurImmunityLevel,
		!aniState->ofdmWeakSigDetectOff ? "on" : "off",
		aniState->firstepLevel,
		!aniState->mrcCCKOff ? "on" : "off",
		aniState->listenTime,
		aniState->ofdmPhyErrCount,
		aniState->cckPhyErrCount);
1057
	return true;
1058 1059
}

1060 1061 1062
static void ar9003_hw_do_getnf(struct ath_hw *ah,
			      int16_t nfarray[NUM_NF_READINGS])
{
1063 1064 1065 1066
#define AR_PHY_CH_MINCCA_PWR	0x1FF00000
#define AR_PHY_CH_MINCCA_PWR_S	20
#define AR_PHY_CH_EXT_MINCCA_PWR 0x01FF0000
#define AR_PHY_CH_EXT_MINCCA_PWR_S 16
1067

1068 1069
	int16_t nf;
	int i;
1070

1071 1072 1073 1074 1075
	for (i = 0; i < AR9300_MAX_CHAINS; i++) {
		if (ah->rxchainmask & BIT(i)) {
			nf = MS(REG_READ(ah, ah->nf_regs[i]),
					 AR_PHY_CH_MINCCA_PWR);
			nfarray[i] = sign_extend32(nf, 8);
1076

1077 1078
			if (IS_CHAN_HT40(ah->curchan)) {
				u8 ext_idx = AR9300_MAX_CHAINS + i;
1079

1080 1081 1082 1083 1084 1085
				nf = MS(REG_READ(ah, ah->nf_regs[ext_idx]),
						 AR_PHY_CH_EXT_MINCCA_PWR);
				nfarray[ext_idx] = sign_extend32(nf, 8);
			}
		}
	}
1086 1087
}

1088
static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
1089
{
1090 1091 1092 1093 1094 1095
	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_2g.nominal = AR_PHY_CCA_NOM_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;
	ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
1096 1097
}

1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
/*
 * Initialize the ANI register values with default (ini) values.
 * This routine is called during a (full) hardware reset after
 * all the registers are initialised from the INI.
 */
static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah)
{
	struct ar5416AniState *aniState;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_channel *chan = ah->curchan;
	struct ath9k_ani_default *iniDef;
	u32 val;

1111
	aniState = &ah->curchan->ani;
1112 1113
	iniDef = &aniState->iniDef;

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	ath_dbg(common, ATH_DBG_ANI,
		"ver %d.%d opmode %u chan %d Mhz/0x%x\n",
		ah->hw_version.macVersion,
		ah->hw_version.macRev,
		ah->opmode,
		chan->channel,
		chan->channelFlags);
1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156

	val = REG_READ(ah, AR_PHY_SFCORR);
	iniDef->m1Thresh = MS(val, AR_PHY_SFCORR_M1_THRESH);
	iniDef->m2Thresh = MS(val, AR_PHY_SFCORR_M2_THRESH);
	iniDef->m2CountThr = MS(val, AR_PHY_SFCORR_M2COUNT_THR);

	val = REG_READ(ah, AR_PHY_SFCORR_LOW);
	iniDef->m1ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M1_THRESH_LOW);
	iniDef->m2ThreshLow = MS(val, AR_PHY_SFCORR_LOW_M2_THRESH_LOW);
	iniDef->m2CountThrLow = MS(val, AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW);

	val = REG_READ(ah, AR_PHY_SFCORR_EXT);
	iniDef->m1ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH);
	iniDef->m2ThreshExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH);
	iniDef->m1ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M1_THRESH_LOW);
	iniDef->m2ThreshLowExt = MS(val, AR_PHY_SFCORR_EXT_M2_THRESH_LOW);
	iniDef->firstep = REG_READ_FIELD(ah,
					 AR_PHY_FIND_SIG,
					 AR_PHY_FIND_SIG_FIRSTEP);
	iniDef->firstepLow = REG_READ_FIELD(ah,
					    AR_PHY_FIND_SIG_LOW,
					    AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW);
	iniDef->cycpwrThr1 = REG_READ_FIELD(ah,
					    AR_PHY_TIMING5,
					    AR_PHY_TIMING5_CYCPWR_THR1);
	iniDef->cycpwrThr1Ext = REG_READ_FIELD(ah,
					       AR_PHY_EXT_CCA,
					       AR_PHY_EXT_CYCPWR_THR1);

	/* these levels just got reset to defaults by the INI */
	aniState->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL_NEW;
	aniState->firstepLevel = ATH9K_ANI_FIRSTEP_LVL_NEW;
	aniState->ofdmWeakSigDetectOff = !ATH9K_ANI_USE_OFDM_WEAK_SIG;
	aniState->mrcCCKOff = !ATH9K_ANI_ENABLE_MRC_CCK;
}

1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
static void ar9003_hw_set_radar_params(struct ath_hw *ah,
				       struct ath_hw_radar_conf *conf)
{
	u32 radar_0 = 0, radar_1 = 0;

	if (!conf) {
		REG_CLR_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_ENA);
		return;
	}

	radar_0 |= AR_PHY_RADAR_0_ENA | AR_PHY_RADAR_0_FFT_ENA;
	radar_0 |= SM(conf->fir_power, AR_PHY_RADAR_0_FIRPWR);
	radar_0 |= SM(conf->radar_rssi, AR_PHY_RADAR_0_RRSSI);
	radar_0 |= SM(conf->pulse_height, AR_PHY_RADAR_0_HEIGHT);
	radar_0 |= SM(conf->pulse_rssi, AR_PHY_RADAR_0_PRSSI);
	radar_0 |= SM(conf->pulse_inband, AR_PHY_RADAR_0_INBAND);

	radar_1 |= AR_PHY_RADAR_1_MAX_RRSSI;
	radar_1 |= AR_PHY_RADAR_1_BLOCK_CHECK;
	radar_1 |= SM(conf->pulse_maxlen, AR_PHY_RADAR_1_MAXLEN);
	radar_1 |= SM(conf->pulse_inband_step, AR_PHY_RADAR_1_RELSTEP_THRESH);
	radar_1 |= SM(conf->radar_inband, AR_PHY_RADAR_1_RELPWR_THRESH);

	REG_WRITE(ah, AR_PHY_RADAR_0, radar_0);
	REG_WRITE(ah, AR_PHY_RADAR_1, radar_1);
	if (conf->ext_channel)
		REG_SET_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
	else
		REG_CLR_BIT(ah, AR_PHY_RADAR_EXT, AR_PHY_RADAR_EXT_ENA);
}

1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
static void ar9003_hw_set_radar_conf(struct ath_hw *ah)
{
	struct ath_hw_radar_conf *conf = &ah->radar_conf;

	conf->fir_power = -28;
	conf->radar_rssi = 0;
	conf->pulse_height = 10;
	conf->pulse_rssi = 24;
	conf->pulse_inband = 8;
	conf->pulse_maxlen = 255;
	conf->pulse_inband_step = 12;
	conf->radar_inband = 8;
}

1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
static void ar9003_hw_antdiv_comb_conf_get(struct ath_hw *ah,
				   struct ath_hw_antcomb_conf *antconf)
{
	u32 regval;

	regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
	antconf->main_lna_conf = (regval & AR_PHY_9485_ANT_DIV_MAIN_LNACONF) >>
				  AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S;
	antconf->alt_lna_conf = (regval & AR_PHY_9485_ANT_DIV_ALT_LNACONF) >>
				 AR_PHY_9485_ANT_DIV_ALT_LNACONF_S;
	antconf->fast_div_bias = (regval & AR_PHY_9485_ANT_FAST_DIV_BIAS) >>
				  AR_PHY_9485_ANT_FAST_DIV_BIAS_S;
1214 1215
	antconf->lna1_lna2_delta = -9;
	antconf->div_group = 2;
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
}

static void ar9003_hw_antdiv_comb_conf_set(struct ath_hw *ah,
				   struct ath_hw_antcomb_conf *antconf)
{
	u32 regval;

	regval = REG_READ(ah, AR_PHY_MC_GAIN_CTRL);
	regval &= ~(AR_PHY_9485_ANT_DIV_MAIN_LNACONF |
		    AR_PHY_9485_ANT_DIV_ALT_LNACONF |
		    AR_PHY_9485_ANT_FAST_DIV_BIAS |
		    AR_PHY_9485_ANT_DIV_MAIN_GAINTB |
		    AR_PHY_9485_ANT_DIV_ALT_GAINTB);
	regval |= ((antconf->main_lna_conf <<
					AR_PHY_9485_ANT_DIV_MAIN_LNACONF_S)
		   & AR_PHY_9485_ANT_DIV_MAIN_LNACONF);
	regval |= ((antconf->alt_lna_conf << AR_PHY_9485_ANT_DIV_ALT_LNACONF_S)
		   & AR_PHY_9485_ANT_DIV_ALT_LNACONF);
	regval |= ((antconf->fast_div_bias << AR_PHY_9485_ANT_FAST_DIV_BIAS_S)
		   & AR_PHY_9485_ANT_FAST_DIV_BIAS);
	regval |= ((antconf->main_gaintb << AR_PHY_9485_ANT_DIV_MAIN_GAINTB_S)
		   & AR_PHY_9485_ANT_DIV_MAIN_GAINTB);
	regval |= ((antconf->alt_gaintb << AR_PHY_9485_ANT_DIV_ALT_GAINTB_S)
		   & AR_PHY_9485_ANT_DIV_ALT_GAINTB);

	REG_WRITE(ah, AR_PHY_MC_GAIN_CTRL, regval);
}

1244 1245 1246
void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
{
	struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1247
	struct ath_hw_ops *ops = ath9k_hw_ops(ah);
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	static const u32 ar9300_cca_regs[6] = {
1249 1250 1251 1252 1253 1254 1255
		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,
	};
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268

	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->set_diversity = ar9003_hw_set_diversity;
1269
	priv_ops->ani_control = ar9003_hw_ani_control;
1270
	priv_ops->do_getnf = ar9003_hw_do_getnf;
1271
	priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
1272
	priv_ops->set_radar_params = ar9003_hw_set_radar_params;
1273

1274 1275 1276
	ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get;
	ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set;

1277
	ar9003_hw_set_nf_limits(ah);
1278
	ar9003_hw_set_radar_conf(ah);
1279
	memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs));
1280
}
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300

void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)
{
	struct ath_common *common = ath9k_hw_common(ah);
	u32 idle_tmo_ms = ah->bb_watchdog_timeout_ms;
	u32 val, idle_count;

	if (!idle_tmo_ms) {
		/* disable IRQ, disable chip-reset for BB panic */
		REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
			  REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) &
			  ~(AR_PHY_WATCHDOG_RST_ENABLE |
			    AR_PHY_WATCHDOG_IRQ_ENABLE));

		/* disable watchdog in non-IDLE mode, disable in IDLE mode */
		REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
			  REG_READ(ah, AR_PHY_WATCHDOG_CTL_1) &
			  ~(AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
			    AR_PHY_WATCHDOG_IDLE_ENABLE));

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		ath_dbg(common, ATH_DBG_RESET, "Disabled BB Watchdog\n");
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336
		return;
	}

	/* enable IRQ, disable chip-reset for BB watchdog */
	val = REG_READ(ah, AR_PHY_WATCHDOG_CTL_2) & AR_PHY_WATCHDOG_CNTL2_MASK;
	REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_2,
		  (val | AR_PHY_WATCHDOG_IRQ_ENABLE) &
		  ~AR_PHY_WATCHDOG_RST_ENABLE);

	/* bound limit to 10 secs */
	if (idle_tmo_ms > 10000)
		idle_tmo_ms = 10000;

	/*
	 * The time unit for watchdog event is 2^15 44/88MHz cycles.
	 *
	 * For HT20 we have a time unit of 2^15/44 MHz = .74 ms per tick
	 * For HT40 we have a time unit of 2^15/88 MHz = .37 ms per tick
	 *
	 * Given we use fast clock now in 5 GHz, these time units should
	 * be common for both 2 GHz and 5 GHz.
	 */
	idle_count = (100 * idle_tmo_ms) / 74;
	if (ah->curchan && IS_CHAN_HT40(ah->curchan))
		idle_count = (100 * idle_tmo_ms) / 37;

	/*
	 * enable watchdog in non-IDLE mode, disable in IDLE mode,
	 * set idle time-out.
	 */
	REG_WRITE(ah, AR_PHY_WATCHDOG_CTL_1,
		  AR_PHY_WATCHDOG_NON_IDLE_ENABLE |
		  AR_PHY_WATCHDOG_IDLE_MASK |
		  (AR_PHY_WATCHDOG_NON_IDLE_MASK & (idle_count << 2)));

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	ath_dbg(common, ATH_DBG_RESET,
		"Enabled BB Watchdog timeout (%u ms)\n",
		idle_tmo_ms);
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360
}

void ar9003_hw_bb_watchdog_read(struct ath_hw *ah)
{
	/*
	 * we want to avoid printing in ISR context so we save the
	 * watchdog status to be printed later in bottom half context.
	 */
	ah->bb_watchdog_last_status = REG_READ(ah, AR_PHY_WATCHDOG_STATUS);

	/*
	 * the watchdog timer should reset on status read but to be sure
	 * sure we write 0 to the watchdog status bit.
	 */
	REG_WRITE(ah, AR_PHY_WATCHDOG_STATUS,
		  ah->bb_watchdog_last_status & ~AR_PHY_WATCHDOG_STATUS_CLR);
}

void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah)
{
	struct ath_common *common = ath9k_hw_common(ah);
1361
	u32 status;
1362 1363 1364 1365 1366

	if (likely(!(common->debug_mask & ATH_DBG_RESET)))
		return;

	status = ah->bb_watchdog_last_status;
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	ath_dbg(common, ATH_DBG_RESET,
		"\n==== BB update: BB status=0x%08x ====\n", status);
	ath_dbg(common, ATH_DBG_RESET,
		"** BB state: wd=%u det=%u rdar=%u rOFDM=%d rCCK=%u tOFDM=%u tCCK=%u agc=%u src=%u **\n",
		MS(status, AR_PHY_WATCHDOG_INFO),
		MS(status, AR_PHY_WATCHDOG_DET_HANG),
		MS(status, AR_PHY_WATCHDOG_RADAR_SM),
		MS(status, AR_PHY_WATCHDOG_RX_OFDM_SM),
		MS(status, AR_PHY_WATCHDOG_RX_CCK_SM),
		MS(status, AR_PHY_WATCHDOG_TX_OFDM_SM),
		MS(status, AR_PHY_WATCHDOG_TX_CCK_SM),
		MS(status, AR_PHY_WATCHDOG_AGC_SM),
		MS(status, AR_PHY_WATCHDOG_SRCH_SM));

	ath_dbg(common, ATH_DBG_RESET,
		"** BB WD cntl: cntl1=0x%08x cntl2=0x%08x **\n",
		REG_READ(ah, AR_PHY_WATCHDOG_CTL_1),
		REG_READ(ah, AR_PHY_WATCHDOG_CTL_2));
	ath_dbg(common, ATH_DBG_RESET,
		"** BB mode: BB_gen_controls=0x%08x **\n",
		REG_READ(ah, AR_PHY_GEN_CTRL));
1388

1389 1390
#define PCT(_field) (common->cc_survey._field * 100 / common->cc_survey.cycles)
	if (common->cc_survey.cycles)
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		ath_dbg(common, ATH_DBG_RESET,
			"** BB busy times: rx_clear=%d%%, rx_frame=%d%%, tx_frame=%d%% **\n",
			PCT(rx_busy), PCT(rx_frame), PCT(tx_frame));
1394

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	ath_dbg(common, ATH_DBG_RESET,
		"==== BB update: done ====\n\n");
1397 1398
}
EXPORT_SYMBOL(ar9003_hw_bb_watchdog_dbg_info);
1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420

void ar9003_hw_disable_phy_restart(struct ath_hw *ah)
{
	u32 val;

	/* While receiving unsupported rate frame rx state machine
	 * gets into a state 0xb and if phy_restart happens in that
	 * state, BB would go hang. If RXSM is in 0xb state after
	 * first bb panic, ensure to disable the phy_restart.
	 */
	if (!((MS(ah->bb_watchdog_last_status,
		  AR_PHY_WATCHDOG_RX_OFDM_SM) == 0xb) ||
	    ah->bb_hang_rx_ofdm))
		return;

	ah->bb_hang_rx_ofdm = true;
	val = REG_READ(ah, AR_PHY_RESTART);
	val &= ~AR_PHY_RESTART_ENA;

	REG_WRITE(ah, AR_PHY_RESTART, val);
}
EXPORT_SYMBOL(ar9003_hw_disable_phy_restart);