1 files changed, 171 insertions, 25 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 1be7c8bbef84..2a5f908d8037 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -87,7 +87,10 @@ static void ath9k_hw_set_clockrate(struct ath_hw *ah)
 	struct ath_common *common = ath9k_hw_common(ah);
 	unsigned int clockrate;
 
-	if (!ah->curchan) /* should really check for CCK instead */
+	/* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
+	if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
+		clockrate = 117;
+	else if (!ah->curchan) /* should really check for CCK instead */
 		clockrate = ATH9K_CLOCK_RATE_CCK;
 	else if (conf->channel->band == IEEE80211_BAND_2GHZ)
 		clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
@@ -99,6 +102,13 @@ static void ath9k_hw_set_clockrate(struct ath_hw *ah)
 	if (conf_is_ht40(conf))
 		clockrate *= 2;
 
+	if (ah->curchan) {
+		if (IS_CHAN_HALF_RATE(ah->curchan))
+			clockrate /= 2;
+		if (IS_CHAN_QUARTER_RATE(ah->curchan))
+			clockrate /= 4;
+	}
+
 	common->clockrate = clockrate;
 }
 
@@ -251,6 +261,15 @@ static void ath9k_hw_read_revisions(struct ath_hw *ah)
 	case AR5416_AR9100_DEVID:
 		ah->hw_version.macVersion = AR_SREV_VERSION_9100;
 		break;
+	case AR9300_DEVID_AR9330:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9330;
+		if (ah->get_mac_revision) {
+			ah->hw_version.macRev = ah->get_mac_revision();
+		} else {
+			val = REG_READ(ah, AR_SREV);
+			ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
+		}
+		return;
 	case AR9300_DEVID_AR9340:
 		ah->hw_version.macVersion = AR_SREV_VERSION_9340;
 		val = REG_READ(ah, AR_SREV);
@@ -551,6 +570,7 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 	case AR_SREV_VERSION_9287:
 	case AR_SREV_VERSION_9271:
 	case AR_SREV_VERSION_9300:
+	case AR_SREV_VERSION_9330:
 	case AR_SREV_VERSION_9485:
 	case AR_SREV_VERSION_9340:
 		break;
@@ -561,7 +581,8 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 		return -EOPNOTSUPP;
 	}
 
-	if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah))
+	if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
+	    AR_SREV_9330(ah))
 		ah->is_pciexpress = false;
 
 	ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
@@ -604,7 +625,10 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 	else
 		ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
 
-	ah->bb_watchdog_timeout_ms = 25;
+	if (AR_SREV_9330(ah))
+		ah->bb_watchdog_timeout_ms = 85;
+	else
+		ah->bb_watchdog_timeout_ms = 25;
 
 	common->state = ATH_HW_INITIALIZED;
 
@@ -630,6 +654,7 @@ int ath9k_hw_init(struct ath_hw *ah)
 	case AR2427_DEVID_PCIE:
 	case AR9300_DEVID_PCIE:
 	case AR9300_DEVID_AR9485_PCIE:
+	case AR9300_DEVID_AR9330:
 	case AR9300_DEVID_AR9340:
 		break;
 	default:
@@ -722,6 +747,39 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
 		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
 			      AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
 		udelay(1000);
+	} else if (AR_SREV_9330(ah)) {
+		u32 ddr_dpll2, pll_control2, kd;
+
+		if (ah->is_clk_25mhz) {
+			ddr_dpll2 = 0x18e82f01;
+			pll_control2 = 0xe04a3d;
+			kd = 0x1d;
+		} else {
+			ddr_dpll2 = 0x19e82f01;
+			pll_control2 = 0x886666;
+			kd = 0x3d;
+		}
+
+		/* program DDR PLL ki and kd value */
+		REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
+
+		/* program DDR PLL phase_shift */
+		REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
+			      AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
+
+		REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
+		udelay(1000);
+
+		/* program refdiv, nint, frac to RTC register */
+		REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
+
+		/* program BB PLL kd and ki value */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
+
+		/* program BB PLL phase_shift */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
+			      AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
 	} else if (AR_SREV_9340(ah)) {
 		u32 regval, pll2_divint, pll2_divfrac, refdiv;
 
@@ -763,7 +821,7 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
 
 	REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
 
-	if (AR_SREV_9485(ah) || AR_SREV_9340(ah))
+	if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
 		udelay(1000);
 
 	/* Switch the core clock for ar9271 to 117Mhz */
@@ -847,6 +905,13 @@ static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
 	}
 }
 
+static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
+{
+	u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
+	val = min(val, (u32) 0xFFFF);
+	REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
+}
+
 static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
 {
 	u32 val = ath9k_hw_mac_to_clks(ah, us);
@@ -884,25 +949,60 @@ static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
 
 void ath9k_hw_init_global_settings(struct ath_hw *ah)
 {
-	struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ieee80211_conf *conf = &common->hw->conf;
+	const struct ath9k_channel *chan = ah->curchan;
 	int acktimeout;
 	int slottime;
 	int sifstime;
+	int rx_lat = 0, tx_lat = 0, eifs = 0;
+	u32 reg;
 
 	ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
 		ah->misc_mode);
 
+	if (!chan)
+		return;
+
 	if (ah->misc_mode != 0)
 		REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
 
-	if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
-		sifstime = 16;
-	else
-		sifstime = 10;
+	rx_lat = 37;
+	tx_lat = 54;
+
+	if (IS_CHAN_HALF_RATE(chan)) {
+		eifs = 175;
+		rx_lat *= 2;
+		tx_lat *= 2;
+		if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		    tx_lat += 11;
+
+		slottime = 13;
+		sifstime = 32;
+	} else if (IS_CHAN_QUARTER_RATE(chan)) {
+		eifs = 340;
+		rx_lat *= 4;
+		tx_lat *= 4;
+		if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		    tx_lat += 22;
+
+		slottime = 21;
+		sifstime = 64;
+	} else {
+		eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS);
+		reg = REG_READ(ah, AR_USEC);
+		rx_lat = MS(reg, AR_USEC_RX_LAT);
+		tx_lat = MS(reg, AR_USEC_TX_LAT);
+
+		slottime = ah->slottime;
+		if (IS_CHAN_5GHZ(chan))
+			sifstime = 16;
+		else
+			sifstime = 10;
+	}
 
 	/* As defined by IEEE 802.11-2007 17.3.8.6 */
-	slottime = ah->slottime + 3 * ah->coverage_class;
-	acktimeout = slottime + sifstime;
+	acktimeout = slottime + sifstime + 3 * ah->coverage_class;
 
 	/*
 	 * Workaround for early ACK timeouts, add an offset to match the
@@ -914,11 +1014,20 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 	if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
 		acktimeout += 64 - sifstime - ah->slottime;
 
-	ath9k_hw_setslottime(ah, ah->slottime);
+	ath9k_hw_set_sifs_time(ah, sifstime);
+	ath9k_hw_setslottime(ah, slottime);
 	ath9k_hw_set_ack_timeout(ah, acktimeout);
 	ath9k_hw_set_cts_timeout(ah, acktimeout);
 	if (ah->globaltxtimeout != (u32) -1)
 		ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
+
+	REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
+	REG_RMW(ah, AR_USEC,
+		(common->clockrate - 1) |
+		SM(rx_lat, AR_USEC_RX_LAT) |
+		SM(tx_lat, AR_USEC_TX_LAT),
+		AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
+
 }
 EXPORT_SYMBOL(ath9k_hw_init_global_settings);
 
@@ -1114,6 +1223,41 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
 			rst_flags |= AR_RTC_RC_MAC_COLD;
 	}
 
+	if (AR_SREV_9330(ah)) {
+		int npend = 0;
+		int i;
+
+		/* AR9330 WAR:
+		 * call external reset function to reset WMAC if:
+		 * - doing a cold reset
+		 * - we have pending frames in the TX queues
+		 */
+
+		for (i = 0; i < AR_NUM_QCU; i++) {
+			npend = ath9k_hw_numtxpending(ah, i);
+			if (npend)
+				break;
+		}
+
+		if (ah->external_reset &&
+		    (npend || type == ATH9K_RESET_COLD)) {
+			int reset_err = 0;
+
+			ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
+				"reset MAC via external reset\n");
+
+			reset_err = ah->external_reset();
+			if (reset_err) {
+				ath_err(ath9k_hw_common(ah),
+					"External reset failed, err=%d\n",
+					reset_err);
+				return false;
+			}
+
+			REG_WRITE(ah, AR_RTC_RESET, 1);
+		}
+	}
+
 	REG_WRITE(ah, AR_RTC_RC, rst_flags);
 
 	REGWRITE_BUFFER_FLUSH(ah);
@@ -1487,9 +1631,13 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 
 	ath9k_hw_init_global_settings(ah);
 
-	if (!AR_SREV_9300_20_OR_LATER(ah)) {
-		ar9002_hw_update_async_fifo(ah);
-		ar9002_hw_enable_wep_aggregation(ah);
+	if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
+		REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
+			    AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
+		REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
+			      AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
+		REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
+			    AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
 	}
 
 	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
@@ -1545,7 +1693,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 				REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
 		}
 #ifdef __BIG_ENDIAN
-		else if (AR_SREV_9340(ah))
+		else if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
 			REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
 		else
 			REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
@@ -1785,16 +1933,16 @@ void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
 	REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
 
 	REG_WRITE(ah, AR_BEACON_PERIOD,
-		  TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
+		  TU_TO_USEC(bs->bs_intval));
 	REG_WRITE(ah, AR_DMA_BEACON_PERIOD,
-		  TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
+		  TU_TO_USEC(bs->bs_intval));
 
 	REGWRITE_BUFFER_FLUSH(ah);
 
 	REG_RMW_FIELD(ah, AR_RSSI_THR,
 		      AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
 
-	beaconintval = bs->bs_intval & ATH9K_BEACON_PERIOD;
+	beaconintval = bs->bs_intval;
 
 	if (bs->bs_sleepduration > beaconintval)
 		beaconintval = bs->bs_sleepduration;
@@ -1983,7 +2131,7 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 
 	if (AR_SREV_9300_20_OR_LATER(ah)) {
 		pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
-		if (!AR_SREV_9485(ah))
+		if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah))
 			pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
 
 		pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
@@ -1996,10 +2144,7 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 			pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
 	} else {
 		pCap->tx_desc_len = sizeof(struct ath_desc);
-		if (AR_SREV_9280_20(ah) &&
-		    ((ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) <=
-		      AR5416_EEP_MINOR_VER_16) ||
-		     ah->eep_ops->get_eeprom(ah, EEP_FSTCLK_5G)))
+		if (AR_SREV_9280_20(ah))
 			pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
 	}
 
@@ -2025,7 +2170,7 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	}
 
 
-	if (AR_SREV_9485(ah)) {
+	if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) {
 		ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
 		/*
 		 * enable the diversity-combining algorithm only when
@@ -2574,6 +2719,7 @@ static struct {
 	{ AR_SREV_VERSION_9287,         "9287" },
 	{ AR_SREV_VERSION_9271,         "9271" },
 	{ AR_SREV_VERSION_9300,         "9300" },
+	{ AR_SREV_VERSION_9330,         "9330" },
 	{ AR_SREV_VERSION_9485,         "9485" },
 };