Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

Conflicts:
	drivers/net/wireless/rt2x00/rt2x00pci.c
	net/mac80211/sta_info.c
	net/wireless/core.h

9 files changed, 94 insertions, 21 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9002_calib.c b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
index c55e5bbafc46..9f589744a9f9 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
@@ -731,7 +731,8 @@ static bool ar9285_hw_cl_cal(struct ath_hw *ah, struct ath9k_channel *chan)
 		if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
 				  AR_PHY_AGC_CONTROL_CAL, 0, AH_WAIT_TIMEOUT)) {
 			ath_dbg(common, CALIBRATE,
-				"offset calibration failed to complete in 1ms; noisy environment?\n");
+				"offset calibration failed to complete in %d ms; noisy environment?\n",
+				AH_WAIT_TIMEOUT / 1000);
 			return false;
 		}
 		REG_CLR_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
@@ -745,7 +746,8 @@ static bool ar9285_hw_cl_cal(struct ath_hw *ah, struct ath9k_channel *chan)
 	if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL,
 			  0, AH_WAIT_TIMEOUT)) {
 		ath_dbg(common, CALIBRATE,
-			"offset calibration failed to complete in 1ms; noisy environment?\n");
+			"offset calibration failed to complete in %d ms; noisy environment?\n",
+			AH_WAIT_TIMEOUT / 1000);
 		return false;
 	}
 
@@ -841,7 +843,8 @@ static bool ar9002_hw_init_cal(struct ath_hw *ah, struct ath9k_channel *chan)
 				   AR_PHY_AGC_CONTROL_CAL,
 				   0, AH_WAIT_TIMEOUT)) {
 			ath_dbg(common, CALIBRATE,
-				"offset calibration failed to complete in 1ms; noisy environment?\n");
+				"offset calibration failed to complete in %d ms; noisy environment?\n",
+				AH_WAIT_TIMEOUT / 1000);
 			return false;
 		}
 
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index f76c3ca07a45..639ba7d18ea4 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -1126,7 +1126,8 @@ skip_tx_iqcal:
 			ar9003_hw_rtt_disable(ah);
 
 		ath_dbg(common, CALIBRATE,
-			"offset calibration failed to complete in 1ms; noisy environment?\n");
+			"offset calibration failed to complete in %d ms; noisy environment?\n",
+			AH_WAIT_TIMEOUT / 1000);
 		return false;
 	}
 
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 67a2a4b3b883..e6307b86363a 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -2072,7 +2072,7 @@ int ath9k_init_debug(struct ath_hw *ah)
 			    &fops_modal_eeprom);
 	sc->rfs_chan_spec_scan = relay_open("spectral_scan",
 					    sc->debug.debugfs_phy,
-					    262144, 4, &rfs_spec_scan_cb,
+					    1024, 256, &rfs_spec_scan_cb,
 					    NULL);
 	debugfs_create_file("spectral_scan_ctl", S_IRUSR | S_IWUSR,
 			    sc->debug.debugfs_phy, sc,
diff --git a/drivers/net/wireless/ath/ath9k/dfs.c b/drivers/net/wireless/ath/ath9k/dfs.c
index ecc81792f2dc..508f8b33f0ef 100644
--- a/drivers/net/wireless/ath/ath9k/dfs.c
+++ b/drivers/net/wireless/ath/ath9k/dfs.c
@@ -193,9 +193,7 @@ void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
 		DFS_STAT_INC(sc, pulses_processed);
 		if (pd != NULL && pd->add_pulse(pd, &pe)) {
 			DFS_STAT_INC(sc, radar_detected);
-			/*
-			 * TODO: forward radar event to DFS management layer
-			 */
+			ieee80211_radar_detected(sc->hw);
 		}
 	}
 }
diff --git a/drivers/net/wireless/ath/ath9k/dfs_debug.c b/drivers/net/wireless/ath/ath9k/dfs_debug.c
index 55d28072adeb..b7611b7bbe43 100644
--- a/drivers/net/wireless/ath/ath9k/dfs_debug.c
+++ b/drivers/net/wireless/ath/ath9k/dfs_debug.c
@@ -105,6 +105,24 @@ static ssize_t write_file_dfs(struct file *file, const char __user *user_buf,
 	return count;
 }
 
+static ssize_t write_file_simulate_radar(struct file *file,
+					 const char __user *user_buf,
+					 size_t count, loff_t *ppos)
+{
+	struct ath_softc *sc = file->private_data;
+
+	ieee80211_radar_detected(sc->hw);
+
+	return count;
+}
+
+static const struct file_operations fops_simulate_radar = {
+	.write = write_file_simulate_radar,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
 static const struct file_operations fops_dfs_stats = {
 	.read = read_file_dfs,
 	.write = write_file_dfs,
@@ -117,4 +135,6 @@ void ath9k_dfs_init_debug(struct ath_softc *sc)
 {
 	debugfs_create_file("dfs_stats", S_IRUSR,
 			    sc->debug.debugfs_phy, sc, &fops_dfs_stats);
+	debugfs_create_file("dfs_simulate_radar", S_IWUSR,
+			    sc->debug.debugfs_phy, sc, &fops_simulate_radar);
 }
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 4fa2bb167050..3473a797651a 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2380,8 +2380,11 @@ static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
 {
 
 	switch (ah->hw_version.macVersion) {
+	/* for temporary testing DFS with 9280 */
+	case AR_SREV_VERSION_9280:
 	/* AR9580 will likely be our first target to get testing on */
 	case AR_SREV_VERSION_9580:
+		return true;
 	default:
 		return false;
 	}
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index af932c9444de..3be2eb0da84a 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -319,6 +319,10 @@ static void ath9k_reg_notifier(struct wiphy *wiphy,
 		ath9k_ps_wakeup(sc);
 		ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
 		sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
+		/* synchronize DFS detector if regulatory domain changed */
+		if (sc->dfs_detector != NULL)
+			sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
+							 request->dfs_region);
 		ath9k_ps_restore(sc);
 	}
 }
@@ -727,12 +731,28 @@ static const struct ieee80211_iface_limit if_limits[] = {
 				 BIT(NL80211_IFTYPE_P2P_GO) },
 };
 
-static const struct ieee80211_iface_combination if_comb = {
-	.limits = if_limits,
-	.n_limits = ARRAY_SIZE(if_limits),
-	.max_interfaces = 2048,
-	.num_different_channels = 1,
-	.beacon_int_infra_match = true,
+
+static const struct ieee80211_iface_limit if_dfs_limits[] = {
+	{ .max = 1,	.types = BIT(NL80211_IFTYPE_AP) },
+};
+
+static const struct ieee80211_iface_combination if_comb[] = {
+	{
+		.limits = if_limits,
+		.n_limits = ARRAY_SIZE(if_limits),
+		.max_interfaces = 2048,
+		.num_different_channels = 1,
+		.beacon_int_infra_match = true,
+	},
+	{
+		.limits = if_dfs_limits,
+		.n_limits = ARRAY_SIZE(if_dfs_limits),
+		.max_interfaces = 1,
+		.num_different_channels = 1,
+		.beacon_int_infra_match = true,
+		.radar_detect_widths =	BIT(NL80211_CHAN_NO_HT) |
+					BIT(NL80211_CHAN_HT20),
+	}
 };
 
 void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
@@ -763,8 +783,8 @@ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
 		BIT(NL80211_IFTYPE_ADHOC) |
 		BIT(NL80211_IFTYPE_MESH_POINT);
 
-	hw->wiphy->iface_combinations = &if_comb;
-	hw->wiphy->n_iface_combinations = 1;
+	hw->wiphy->iface_combinations = if_comb;
+	hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
 
 	if (AR_SREV_5416(sc->sc_ah))
 		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6e66f9c6782b..1bf52c88004a 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -280,6 +280,10 @@ static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
 	if (r) {
 		ath_err(common,
 			"Unable to reset channel, reset status %d\n", r);
+
+		ath9k_hw_enable_interrupts(ah);
+		ath9k_queue_reset(sc, RESET_TYPE_BB_HANG);
+
 		goto out;
 	}
 
@@ -1245,10 +1249,27 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 		if (old_pos >= 0)
 			ath_update_survey_nf(sc, old_pos);
 
-		/* perform spectral scan if requested. */
-		if (sc->scanning && sc->spectral_mode == SPECTRAL_CHANSCAN)
-			ath9k_spectral_scan_trigger(hw);
-
+		/*
+		 * Enable radar pulse detection if on a DFS channel. Spectral
+		 * scanning and radar detection can not be used concurrently.
+		 */
+		if (hw->conf.radar_enabled) {
+			u32 rxfilter;
+
+			/* set HW specific DFS configuration */
+			ath9k_hw_set_radar_params(ah);
+			rxfilter = ath9k_hw_getrxfilter(ah);
+			rxfilter |= ATH9K_RX_FILTER_PHYRADAR |
+				    ATH9K_RX_FILTER_PHYERR;
+			ath9k_hw_setrxfilter(ah, rxfilter);
+			ath_dbg(common, DFS, "DFS enabled at freq %d\n",
+				curchan->center_freq);
+		} else {
+			/* perform spectral scan if requested. */
+			if (sc->scanning &&
+			    sc->spectral_mode == SPECTRAL_CHANSCAN)
+				ath9k_spectral_scan_trigger(hw);
+		}
 	}
 
 	if (changed & IEEE80211_CONF_CHANGE_POWER) {
@@ -1745,7 +1766,7 @@ static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
 	mutex_unlock(&sc->mutex);
 }
 
-static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
+static void ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
 {
 	struct ath_softc *sc = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index ee156e543147..ee7ca5aecdb0 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -381,6 +381,10 @@ u32 ath_calcrxfilter(struct ath_softc *sc)
 	rfilt = ATH9K_RX_FILTER_UCAST | ATH9K_RX_FILTER_BCAST
 		| ATH9K_RX_FILTER_MCAST;
 
+	/* if operating on a DFS channel, enable radar pulse detection */
+	if (sc->hw->conf.radar_enabled)
+		rfilt |= ATH9K_RX_FILTER_PHYRADAR | ATH9K_RX_FILTER_PHYERR;
+
 	if (sc->rx.rxfilter & FIF_PROBE_REQ)
 		rfilt |= ATH9K_RX_FILTER_PROBEREQ;
 
@@ -1228,6 +1232,9 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 		    unlikely(tsf_lower - rs.rs_tstamp > 0x10000000))
 			rxs->mactime += 0x100000000ULL;
 
+		if (rs.rs_phyerr == ATH9K_PHYERR_RADAR)
+			ath9k_dfs_process_phyerr(sc, hdr, &rs, rxs->mactime);
+
 		if (rs.rs_status & ATH9K_RXERR_PHY) {
 			if (ath_process_fft(sc, hdr, &rs, rxs->mactime)) {
 				RX_STAT_INC(rx_spectral);