ath9k: simplify regulatory code

Now that cfg80211 has its own regulatory infrastructure we can
condense ath9k's regulatory code considerably. We only keep data
we need to provide our own regulatory_hint(), reg_notifier() and
information necessary for calibration.

Atheros hardware supports 12 world regulatory domains, since these
are custom we apply them through the the new wiphy_apply_custom_regulatory().
Although we have 12 we can consolidate these into 5 structures based on
frequency and apply a different set of flags that differentiate them on
a case by case basis through the reg_notifier().

If CRDA is not found our own custom world regulatory domain is applied,
this is identical to cfg80211's except we enable passive scan on most
frequencies.
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/ath9k.h

@@ -457,22 +457,12 @@ struct ath9k_channel {
 	struct ieee80211_channel *chan;
 	u16 channel;
 	u32 channelFlags;
-	u8 privFlags;
-	int8_t maxRegTxPower;
-	int8_t maxTxPower;
-	int8_t minTxPower;
 	u32 chanmode;
 	int32_t CalValid;
 	bool oneTimeCalsDone;
 	int8_t iCoff;
 	int8_t qCoff;
 	int16_t rawNoiseFloor;
-	int8_t antennaMax;
-	u32 regDmnFlags;
-	u32 conformanceTestLimit[3]; /* 0:11a, 1: 11b, 2:11g */
-#ifdef ATH_NF_PER_CHAN
-	struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
-#endif
 };
 
 #define IS_CHAN_A(_c) ((((_c)->channelFlags & CHANNEL_A) == CHANNEL_A) || \
@@ -500,7 +490,6 @@ struct ath9k_channel {
 			  ((_c)->chanmode == CHANNEL_G_HT40MINUS))
 #define IS_CHAN_HT(_c) (IS_CHAN_HT20((_c)) || IS_CHAN_HT40((_c)))
 
-#define IS_CHAN_IN_PUBLIC_SAFETY_BAND(_c) ((_c) > 4940 && (_c) < 4990)
 #define IS_CHAN_A_5MHZ_SPACED(_c)			\
 	((((_c)->channelFlags & CHANNEL_5GHZ) != 0) &&	\
 	 (((_c)->channel % 20) != 0) &&			\
@@ -790,15 +779,13 @@ struct ath_hal {
 	u16 ah_currentRD;
 	u16 ah_currentRDExt;
 	u16 ah_currentRDInUse;
-	u16 ah_currentRD5G;
-	u16 ah_currentRD2G;
-	char ah_iso[4];
+	char alpha2[2];
+	struct reg_dmn_pair_mapping *regpair;
 	enum ath9k_power_mode ah_power_mode;
 	enum ath9k_power_mode ah_restore_mode;
 
-	struct ath9k_channel ah_channels[150];
+	struct ath9k_channel ah_channels[38];
 	struct ath9k_channel *ah_curchan;
-	u32 ah_nchan;
 
 	bool ah_isPciExpress;
 	u16 ah_txTrigLevel;
@@ -807,10 +794,7 @@ struct ath_hal {
 	u32 ah_rfkill_polarity;
 	u32 ah_btactive_gpio;
 	u32 ah_wlanactive_gpio;
-
-#ifndef ATH_NF_PER_CHAN
 	struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
-#endif
 
 	bool sw_mgmt_crypto;
 };
@@ -825,8 +809,6 @@ struct ath_rate_table;
 
 /* Helpers */
 
-enum wireless_mode ath9k_hw_chan2wmode(struct ath_hal *ah,
-			       const struct ath9k_channel *chan);
 bool ath9k_hw_wait(struct ath_hal *ah, u32 reg, u32 mask, u32 val);
 u32 ath9k_hw_reverse_bits(u32 val, u32 n);
 bool ath9k_get_channel_edges(struct ath_hal *ah,
@@ -836,7 +818,6 @@ u16 ath9k_hw_computetxtime(struct ath_hal *ah,
 			   struct ath_rate_table *rates,
 			   u32 frameLen, u16 rateix,
 			   bool shortPreamble);
-u32 ath9k_hw_mhz2ieee(struct ath_hal *ah, u32 freq, u32 flags);
 void ath9k_hw_get_channel_centers(struct ath_hal *ah,
 				  struct ath9k_channel *chan,
 				  struct chan_centers *centers);
@@ -924,17 +905,18 @@ bool ath9k_hw_setslottime(struct ath_hal *ah, u32 us);
 void ath9k_hw_set11nmac2040(struct ath_hal *ah, enum ath9k_ht_macmode mode);
 
 /* Regulatory */
+u16 ath9k_regd_get_rd(struct ath_hal *ah);
+bool ath9k_is_world_regd(struct ath_hal *ah);
+const struct ieee80211_regdomain *ath9k_world_regdomain(struct ath_hal *ah);
+const struct ieee80211_regdomain *ath9k_default_world_regdomain(void);
+
+void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby);
+void ath9k_reg_apply_radar_flags(struct wiphy *wiphy);
 
-bool ath9k_regd_is_public_safety_sku(struct ath_hal *ah);
-struct ath9k_channel* ath9k_regd_check_channel(struct ath_hal *ah,
-			 const struct ath9k_channel *c);
+int ath9k_regd_init(struct ath_hal *ah);
+bool ath9k_regd_is_eeprom_valid(struct ath_hal *ah);
 u32 ath9k_regd_get_ctl(struct ath_hal *ah, struct ath9k_channel *chan);
-u32 ath9k_regd_get_antenna_allowed(struct ath_hal *ah,
-				   struct ath9k_channel *chan);
-bool ath9k_regd_init_channels(struct ath_hal *ah,
-			      u32 maxchans, u32 *nchans, u8 *regclassids,
-			      u32 maxregids, u32 *nregids, u16 cc,
-			      bool enableOutdoor, bool enableExtendedChannels);
+int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request);
 
 /* ANI */
 

drivers/net/wireless/ath9k/calib.c

@@ -625,11 +625,7 @@ void ath9k_hw_loadnf(struct ath_hal *ah, struct ath9k_channel *chan)
 	else
 		chainmask = 0x3F;
 
-#ifdef ATH_NF_PER_CHAN
-	h = chan->nfCalHist;
-#else
 	h = ah->nfCalHist;
-#endif
 
 	for (i = 0; i < NUM_NF_READINGS; i++) {
 		if (chainmask & (1 << i)) {
@@ -697,11 +693,7 @@ int16_t ath9k_hw_getnf(struct ath_hal *ah,
 		}
 	}
 
-#ifdef ATH_NF_PER_CHAN
-	h = chan->nfCalHist;
-#else
 	h = ah->nfCalHist;
-#endif
 
 	ath9k_hw_update_nfcal_hist_buffer(h, nfarray);
 	chan->rawNoiseFloor = h[0].privNF;
@@ -728,20 +720,12 @@ void ath9k_init_nfcal_hist_buffer(struct ath_hal *ah)
 
 s16 ath9k_hw_getchan_noise(struct ath_hal *ah, struct ath9k_channel *chan)
 {
-	struct ath9k_channel *ichan;
 	s16 nf;
 
-	ichan = ath9k_regd_check_channel(ah, chan);
-	if (ichan == NULL) {
-		DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
-			"invalid channel %u/0x%x; no mapping\n",
-			chan->channel, chan->channelFlags);
-		return ATH_DEFAULT_NOISE_FLOOR;
-	}
-	if (ichan->rawNoiseFloor == 0)
+	if (chan->rawNoiseFloor == 0)
 		nf = -96;
 	else
-		nf = ichan->rawNoiseFloor;
+		nf = chan->rawNoiseFloor;
 
 	if (!ath9k_hw_nf_in_range(ah, nf))
 		nf = ATH_DEFAULT_NOISE_FLOOR;
@@ -755,21 +739,13 @@ bool ath9k_hw_calibrate(struct ath_hal *ah, struct ath9k_channel *chan,
 {
 	struct ath_hal_5416 *ahp = AH5416(ah);
 	struct hal_cal_list *currCal = ahp->ah_cal_list_curr;
-	struct ath9k_channel *ichan = ath9k_regd_check_channel(ah, chan);
 
 	*isCalDone = true;
 
-	if (ichan == NULL) {
-		DPRINTF(ah->ah_sc, ATH_DBG_CHANNEL,
-			"invalid channel %u/0x%x; no mapping\n",
-			chan->channel, chan->channelFlags);
-		return false;
-	}
-
 	if (currCal &&
 	    (currCal->calState == CAL_RUNNING ||
 	     currCal->calState == CAL_WAITING)) {
-		ath9k_hw_per_calibration(ah, ichan, rxchainmask, currCal,
+		ath9k_hw_per_calibration(ah, chan, rxchainmask, currCal,
 					 isCalDone);
 		if (*isCalDone) {
 			ahp->ah_cal_list_curr = currCal = currCal->calNext;
@@ -782,14 +758,12 @@ bool ath9k_hw_calibrate(struct ath_hal *ah, struct ath9k_channel *chan,
 	}
 
 	if (longcal) {
-		ath9k_hw_getnf(ah, ichan);
+		ath9k_hw_getnf(ah, chan);
 		ath9k_hw_loadnf(ah, ah->ah_curchan);
 		ath9k_hw_start_nfcal(ah);
 
-		if ((ichan->channelFlags & CHANNEL_CW_INT) != 0) {
-			chan->channelFlags |= CHANNEL_CW_INT;
-			ichan->channelFlags &= ~CHANNEL_CW_INT;
-		}
+		if (chan->channelFlags & CHANNEL_CW_INT)
+			chan->channelFlags &= ~CHANNEL_CW_INT;
 	}
 
 	return true;
@@ -894,7 +868,6 @@ bool ath9k_hw_init_cal(struct ath_hal *ah,
 		       struct ath9k_channel *chan)
 {
 	struct ath_hal_5416 *ahp = AH5416(ah);
-	struct ath9k_channel *ichan = ath9k_regd_check_channel(ah, chan);
 
 	REG_WRITE(ah, AR_PHY_AGC_CONTROL,
 		  REG_READ(ah, AR_PHY_AGC_CONTROL) |
@@ -942,7 +915,7 @@ bool ath9k_hw_init_cal(struct ath_hal *ah,
 			ath9k_hw_reset_calibration(ah, ahp->ah_cal_list_curr);
 	}
 
-	ichan->CalValid = 0;
+	chan->CalValid = 0;
 
 	return true;
 }

drivers/net/wireless/ath9k/core.h

@@ -724,7 +724,6 @@ struct ath_softc {
 	struct ieee80211_rate rates[IEEE80211_NUM_BANDS][ATH_RATE_MAX];
 	struct ath_rate_table *hw_rate_table[ATH9K_MODE_MAX];
 	struct ath_rate_table *cur_rate_table;
-	struct ieee80211_channel channels[IEEE80211_NUM_BANDS][ATH_CHAN_MAX];
 	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
 	struct ath_led radio_led;
 	struct ath_led assoc_led;

drivers/net/wireless/ath9k/hw.c

@@ -187,46 +187,6 @@ u16 ath9k_hw_computetxtime(struct ath_hal *ah,
 	return txTime;
 }
 
-u32 ath9k_hw_mhz2ieee(struct ath_hal *ah, u32 freq, u32 flags)
-{
-	if (flags & CHANNEL_2GHZ) {
-		if (freq == 2484)
-			return 14;
-		if (freq < 2484)
-			return (freq - 2407) / 5;
-		else
-			return 15 + ((freq - 2512) / 20);
-	} else if (flags & CHANNEL_5GHZ) {
-		if (ath9k_regd_is_public_safety_sku(ah) &&
-		    IS_CHAN_IN_PUBLIC_SAFETY_BAND(freq)) {
-			return ((freq * 10) +
-				(((freq % 5) == 2) ? 5 : 0) - 49400) / 5;
-		} else if ((flags & CHANNEL_A) && (freq <= 5000)) {
-			return (freq - 4000) / 5;
-		} else {
-			return (freq - 5000) / 5;
-		}
-	} else {
-		if (freq == 2484)
-			return 14;
-		if (freq < 2484)
-			return (freq - 2407) / 5;
-		if (freq < 5000) {
-			if (ath9k_regd_is_public_safety_sku(ah)
-			    && IS_CHAN_IN_PUBLIC_SAFETY_BAND(freq)) {
-				return ((freq * 10) +
-					(((freq % 5) ==
-					  2) ? 5 : 0) - 49400) / 5;
-			} else if (freq > 4900) {
-				return (freq - 4000) / 5;
-			} else {
-				return 15 + ((freq - 2512) / 20);
-			}
-		}
-		return (freq - 5000) / 5;
-	}
-}
-
 void ath9k_hw_get_channel_centers(struct ath_hal *ah,
 				  struct ath9k_channel *chan,
 				  struct chan_centers *centers)
@@ -1270,6 +1230,7 @@ static int ath9k_hw_process_ini(struct ath_hal *ah,
 {
 	int i, regWrites = 0;
 	struct ath_hal_5416 *ahp = AH5416(ah);
+	struct ieee80211_channel *channel = chan->chan;
 	u32 modesIndex, freqIndex;
 	int status;
 
@@ -1374,9 +1335,8 @@ static int ath9k_hw_process_ini(struct ath_hal *ah,
 
 	status = ath9k_hw_set_txpower(ah, chan,
 				      ath9k_regd_get_ctl(ah, chan),
-				      ath9k_regd_get_antenna_allowed(ah,
-								     chan),
-				      chan->maxRegTxPower * 2,
+				      channel->max_antenna_gain * 2,
+				      channel->max_power * 2,
 				      min((u32) MAX_RATE_POWER,
 					  (u32) ah->ah_powerLimit));
 	if (status != 0) {
@@ -1669,6 +1629,7 @@ static bool ath9k_hw_channel_change(struct ath_hal *ah,
 				    struct ath9k_channel *chan,
 				    enum ath9k_ht_macmode macmode)
 {
+	struct ieee80211_channel *channel = chan->chan;
 	u32 synthDelay, qnum;
 
 	for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
@@ -1705,8 +1666,8 @@ static bool ath9k_hw_channel_change(struct ath_hal *ah,
 
 	if (ath9k_hw_set_txpower(ah, chan,
 				 ath9k_regd_get_ctl(ah, chan),
-				 ath9k_regd_get_antenna_allowed(ah, chan),
-				 chan->maxRegTxPower * 2,
+				 channel->max_antenna_gain * 2,
+				 channel->max_power * 2,
 				 min((u32) MAX_RATE_POWER,
 				     (u32) ah->ah_powerLimit)) != 0) {
 		DPRINTF(ah->ah_sc, ATH_DBG_EEPROM,
@@ -2209,13 +2170,6 @@ int ath9k_hw_reset(struct ath_hal *ah, struct ath9k_channel *chan,
 		ahp->ah_rxchainmask &= 0x3;
 	}
 
-	if (ath9k_regd_check_channel(ah, chan) == NULL) {
-		DPRINTF(ah->ah_sc, ATH_DBG_CHANNEL,
-			"invalid channel %u/0x%x; no mapping\n",
-			chan->channel, chan->channelFlags);
-		return -EINVAL;
-	}
-
 	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
 		return -EIO;
 
@@ -3718,13 +3672,14 @@ bool ath9k_hw_disable(struct ath_hal *ah)
 bool ath9k_hw_set_txpowerlimit(struct ath_hal *ah, u32 limit)
 {
 	struct ath9k_channel *chan = ah->ah_curchan;
+	struct ieee80211_channel *channel = chan->chan;
 
 	ah->ah_powerLimit = min(limit, (u32) MAX_RATE_POWER);
 
 	if (ath9k_hw_set_txpower(ah, chan,
 				 ath9k_regd_get_ctl(ah, chan),
-				 ath9k_regd_get_antenna_allowed(ah, chan),
-				 chan->maxRegTxPower * 2,
+				 channel->max_antenna_gain * 2,
+				 channel->max_power * 2,
 				 min((u32) MAX_RATE_POWER,
 				     (u32) ah->ah_powerLimit)) != 0)
 		return false;

drivers/net/wireless/ath9k/main.c

@@ -28,6 +28,77 @@ MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
 MODULE_LICENSE("Dual BSD/GPL");
 
+/* We use the hw_value as an index into our private channel structure */
+
+#define CHAN2G(_freq, _idx)  { \
+	.center_freq = (_freq), \
+	.hw_value = (_idx), \
+	.max_power = 30, \
+}
+
+#define CHAN5G(_freq, _idx) { \
+	.band = IEEE80211_BAND_5GHZ, \
+	.center_freq = (_freq), \
+	.hw_value = (_idx), \
+	.max_power = 30, \
+}
+
+/* Some 2 GHz radios are actually tunable on 2312-2732
+ * on 5 MHz steps, we support the channels which we know
+ * we have calibration data for all cards though to make
+ * this static */
+static struct ieee80211_channel ath9k_2ghz_chantable[] = {
+	CHAN2G(2412, 0), /* Channel 1 */
+	CHAN2G(2417, 1), /* Channel 2 */
+	CHAN2G(2422, 2), /* Channel 3 */
+	CHAN2G(2427, 3), /* Channel 4 */
+	CHAN2G(2432, 4), /* Channel 5 */
+	CHAN2G(2437, 5), /* Channel 6 */
+	CHAN2G(2442, 6), /* Channel 7 */
+	CHAN2G(2447, 7), /* Channel 8 */
+	CHAN2G(2452, 8), /* Channel 9 */
+	CHAN2G(2457, 9), /* Channel 10 */
+	CHAN2G(2462, 10), /* Channel 11 */
+	CHAN2G(2467, 11), /* Channel 12 */
+	CHAN2G(2472, 12), /* Channel 13 */
+	CHAN2G(2484, 13), /* Channel 14 */
+};
+
+/* Some 5 GHz radios are actually tunable on XXXX-YYYY
+ * on 5 MHz steps, we support the channels which we know
+ * we have calibration data for all cards though to make
+ * this static */
+static struct ieee80211_channel ath9k_5ghz_chantable[] = {
+	/* _We_ call this UNII 1 */
+	CHAN5G(5180, 14), /* Channel 36 */
+	CHAN5G(5200, 15), /* Channel 40 */
+	CHAN5G(5220, 16), /* Channel 44 */
+	CHAN5G(5240, 17), /* Channel 48 */
+	/* _We_ call this UNII 2 */
+	CHAN5G(5260, 18), /* Channel 52 */
+	CHAN5G(5280, 19), /* Channel 56 */
+	CHAN5G(5300, 20), /* Channel 60 */
+	CHAN5G(5320, 21), /* Channel 64 */
+	/* _We_ call this "Middle band" */
+	CHAN5G(5500, 22), /* Channel 100 */
+	CHAN5G(5520, 23), /* Channel 104 */
+	CHAN5G(5540, 24), /* Channel 108 */
+	CHAN5G(5560, 25), /* Channel 112 */
+	CHAN5G(5580, 26), /* Channel 116 */
+	CHAN5G(5600, 27), /* Channel 120 */
+	CHAN5G(5620, 28), /* Channel 124 */
+	CHAN5G(5640, 29), /* Channel 128 */
+	CHAN5G(5660, 30), /* Channel 132 */
+	CHAN5G(5680, 31), /* Channel 136 */
+	CHAN5G(5700, 32), /* Channel 140 */
+	/* _We_ call this UNII 3 */
+	CHAN5G(5745, 33), /* Channel 149 */
+	CHAN5G(5765, 34), /* Channel 153 */
+	CHAN5G(5785, 35), /* Channel 157 */
+	CHAN5G(5805, 36), /* Channel 161 */
+	CHAN5G(5825, 37), /* Channel 165 */
+};
+
 static void ath_cache_conf_rate(struct ath_softc *sc,
 				struct ieee80211_conf *conf)
 {
@@ -152,75 +223,6 @@ static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band)
 	}
 }
 
-static int ath_setup_channels(struct ath_softc *sc)
-{
-	struct ath_hal *ah = sc->sc_ah;
-	int nchan, i, a = 0, b = 0;
-	u8 regclassids[ATH_REGCLASSIDS_MAX];
-	u32 nregclass = 0;
-	struct ieee80211_supported_band *band_2ghz;
-	struct ieee80211_supported_band *band_5ghz;
-	struct ieee80211_channel *chan_2ghz;
-	struct ieee80211_channel *chan_5ghz;
-	struct ath9k_channel *c;
-
-	/* Fill in ah->ah_channels */
-	if (!ath9k_regd_init_channels(ah, ATH_CHAN_MAX, (u32 *)&nchan,
-				      regclassids, ATH_REGCLASSIDS_MAX,
-				      &nregclass, CTRY_DEFAULT, false, 1)) {
-		u32 rd = ah->ah_currentRD;
-		DPRINTF(sc, ATH_DBG_FATAL,
-			"Unable to collect channel list; "
-			"regdomain likely %u country code %u\n",
-			rd, CTRY_DEFAULT);
-		return -EINVAL;
-	}
-
-	band_2ghz = &sc->sbands[IEEE80211_BAND_2GHZ];
-	band_5ghz = &sc->sbands[IEEE80211_BAND_5GHZ];
-	chan_2ghz = sc->channels[IEEE80211_BAND_2GHZ];
-	chan_5ghz = sc->channels[IEEE80211_BAND_5GHZ];
-
-	for (i = 0; i < nchan; i++) {
-		c = &ah->ah_channels[i];
-		if (IS_CHAN_2GHZ(c)) {
-			chan_2ghz[a].band = IEEE80211_BAND_2GHZ;
-			chan_2ghz[a].center_freq = c->channel;
-			chan_2ghz[a].max_power = c->maxTxPower;
-			c->chan = &chan_2ghz[a];
-
-			if (c->privFlags & CHANNEL_DISALLOW_ADHOC)
-				chan_2ghz[a].flags |= IEEE80211_CHAN_NO_IBSS;
-			if (c->channelFlags & CHANNEL_PASSIVE)
-				chan_2ghz[a].flags |= IEEE80211_CHAN_PASSIVE_SCAN;
-
-			band_2ghz->n_channels = ++a;
-
-			DPRINTF(sc, ATH_DBG_CONFIG, "2MHz channel: %d, "
-				"channelFlags: 0x%x\n",
-				c->channel, c->channelFlags);
-		} else if (IS_CHAN_5GHZ(c)) {
-			chan_5ghz[b].band = IEEE80211_BAND_5GHZ;
-			chan_5ghz[b].center_freq = c->channel;
-			chan_5ghz[b].max_power = c->maxTxPower;
-			c->chan = &chan_5ghz[a];
-
-			if (c->privFlags & CHANNEL_DISALLOW_ADHOC)
-				chan_5ghz[b].flags |= IEEE80211_CHAN_NO_IBSS;
-			if (c->channelFlags & CHANNEL_PASSIVE)
-				chan_5ghz[b].flags |= IEEE80211_CHAN_PASSIVE_SCAN;
-
-			band_5ghz->n_channels = ++b;
-
-			DPRINTF(sc, ATH_DBG_CONFIG, "5MHz channel: %d, "
-				"channelFlags: 0x%x\n",
-				c->channel, c->channelFlags);
-		}
-	}
-
-	return 0;
-}
-
 /*
  * Set/change channels.  If the channel is really being changed, it's done
  * by reseting the chip.  To accomplish this we must first cleanup any pending
@@ -582,19 +584,6 @@ irqreturn_t ath_isr(int irq, void *dev)
 	return IRQ_HANDLED;
 }
 
-static int ath_get_channel(struct ath_softc *sc,
-			   struct ieee80211_channel *chan)
-{
-	int i;
-
-	for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
-		if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
-			return i;
-	}
-
-	return -1;
-}
-
 static u32 ath_get_extchanmode(struct ath_softc *sc,
 			       struct ieee80211_channel *chan,
 			       enum nl80211_channel_type channel_type)
@@ -1349,16 +1338,12 @@ static int ath_init(u16 devid, struct ath_softc *sc)
 	for (i = 0; i < sc->sc_keymax; i++)
 		ath9k_hw_keyreset(ah, (u16) i);
 
-	/* Collect the channel list using the default country code */
-
-	error = ath_setup_channels(sc);
-	if (error)
+	if (ath9k_regd_init(sc->sc_ah))
 		goto bad;
 
 	/* default to MONITOR mode */
 	sc->sc_ah->ah_opmode = NL80211_IFTYPE_MONITOR;
 
-
 	/* Setup rate tables */
 
 	ath_rate_attach(sc);
@@ -1490,18 +1475,20 @@ static int ath_init(u16 devid, struct ath_softc *sc)
 
 	/* setup channels and rates */
 
-	sc->sbands[IEEE80211_BAND_2GHZ].channels =
-		sc->channels[IEEE80211_BAND_2GHZ];
+	sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
 	sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
 		sc->rates[IEEE80211_BAND_2GHZ];
 	sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
+	sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
+		ARRAY_SIZE(ath9k_2ghz_chantable);
 
 	if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
-		sc->sbands[IEEE80211_BAND_5GHZ].channels =
-			sc->channels[IEEE80211_BAND_5GHZ];
+		sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable;
 		sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
 			sc->rates[IEEE80211_BAND_5GHZ];
 		sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
+		sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
+			ARRAY_SIZE(ath9k_5ghz_chantable);
 	}
 
 	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_BT_COEX)
@@ -1550,6 +1537,9 @@ int ath_attach(u16 devid, struct ath_softc *sc)
 		BIT(NL80211_IFTYPE_STATION) |
 		BIT(NL80211_IFTYPE_ADHOC);
 
+	hw->wiphy->reg_notifier = ath9k_reg_notifier;
+	hw->wiphy->strict_regulatory = true;
+
 	hw->queues = 4;
 	hw->max_rates = 4;
 	hw->max_rate_tries = ATH_11N_TXMAXTRY;
@@ -1588,11 +1578,36 @@ int ath_attach(u16 devid, struct ath_softc *sc)
 		goto detach;
 #endif
 
+	if (ath9k_is_world_regd(sc->sc_ah)) {
+		/* Anything applied here (prior to wiphy registratoin) gets
+		 * saved on the wiphy orig_* parameters */
+		const struct ieee80211_regdomain *regd =
+			ath9k_world_regdomain(sc->sc_ah);
+		hw->wiphy->custom_regulatory = true;
+		hw->wiphy->strict_regulatory = false;
+		wiphy_apply_custom_regulatory(sc->hw->wiphy, regd);
+		ath9k_reg_apply_radar_flags(hw->wiphy);
+		ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT);
+	} else {
+		/* This gets applied in the case of the absense of CRDA,
+		 * its our own custom world regulatory domain, similar to
+		 * cfg80211's but we enable passive scanning */
+		const struct ieee80211_regdomain *regd =
+			ath9k_default_world_regdomain();
+		wiphy_apply_custom_regulatory(sc->hw->wiphy, regd);
+		ath9k_reg_apply_radar_flags(hw->wiphy);
+		ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT);
+	}
+
 	error = ieee80211_register_hw(hw);
 
+	if (!ath9k_is_world_regd(sc->sc_ah))
+		regulatory_hint(hw->wiphy, sc->sc_ah->alpha2);
+
 	/* Initialize LED control */
 	ath_init_leds(sc);
 
+
 	return 0;
 detach:
 	ath_detach(sc);
@@ -1818,6 +1833,37 @@ int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
 	return qnum;
 }
 
+/* XXX: Remove me once we don't depend on ath9k_channel for all
+ * this redundant data */
+static void ath9k_update_ichannel(struct ath_softc *sc,
+			  struct ath9k_channel *ichan)
+{
+	struct ieee80211_hw *hw = sc->hw;
+	struct ieee80211_channel *chan = hw->conf.channel;
+	struct ieee80211_conf *conf = &hw->conf;
+
+	ichan->channel = chan->center_freq;
+	ichan->chan = chan;
+
+	if (chan->band == IEEE80211_BAND_2GHZ) {
+		ichan->chanmode = CHANNEL_G;
+		ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM;
+	} else {
+		ichan->chanmode = CHANNEL_A;
+		ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
+	}
+
+	sc->tx_chan_width = ATH9K_HT_MACMODE_20;
+
+	if (conf_is_ht(conf)) {
+		if (conf_is_ht40(conf))
+			sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
+
+		ichan->chanmode = ath_get_extchanmode(sc, chan,
+					    conf->channel_type);
+	}
+}
+
 /**********************/
 /* mac80211 callbacks */
 /**********************/
@@ -1834,16 +1880,10 @@ static int ath9k_start(struct ieee80211_hw *hw)
 
 	/* setup initial channel */
 
-	pos = ath_get_channel(sc, curchan);
-	if (pos == -1) {
-		DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n", curchan->center_freq);
-		return -EINVAL;
-	}
+	pos = curchan->hw_value;
 
-	sc->tx_chan_width = ATH9K_HT_MACMODE_20;
-	sc->sc_ah->ah_channels[pos].chanmode =
-		(curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
 	init_channel = &sc->sc_ah->ah_channels[pos];
+	ath9k_update_ichannel(sc, init_channel);
 
 	/* Reset SERDES registers */
 	ath9k_hw_configpcipowersave(sc->sc_ah, 0);
@@ -2127,32 +2167,13 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 
 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 		struct ieee80211_channel *curchan = hw->conf.channel;
-		int pos;
+		int pos = curchan->hw_value;
 
 		DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
 			curchan->center_freq);
 
-		pos = ath_get_channel(sc, curchan);
-		if (pos == -1) {
-			DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n",
-				curchan->center_freq);
-			mutex_unlock(&sc->mutex);
-			return -EINVAL;
-		}
-
-		sc->tx_chan_width = ATH9K_HT_MACMODE_20;
-		sc->sc_ah->ah_channels[pos].chanmode =
-			(curchan->band == IEEE80211_BAND_2GHZ) ?
-			CHANNEL_G : CHANNEL_A;
-
-		if (conf_is_ht(conf)) {
-			if (conf_is_ht40(conf))
-				sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
-
-			sc->sc_ah->ah_channels[pos].chanmode =
-				ath_get_extchanmode(sc, curchan,
-						    conf->channel_type);
-		}
+		/* XXX: remove me eventualy */
+		ath9k_update_ichannel(sc, &sc->sc_ah->ah_channels[pos]);
 
 		ath_update_chainmask(sc, conf_is_ht(conf));
 

drivers/net/wireless/ath9k/regd.h

@@ -19,126 +19,14 @@
 
 #include "ath9k.h"
 
-#define BMLEN 2
-#define BMZERO {(u64) 0, (u64) 0}
-
-#define BM(_fa, _fb, _fc, _fd, _fe, _ff, _fg, _fh, _fi, _fj, _fk, _fl) \
-	{((((_fa >= 0) && (_fa < 64)) ? \
-		(((u64) 1) << _fa) : (u64) 0) | \
-	(((_fb >= 0) && (_fb < 64)) ? \
-		(((u64) 1) << _fb) : (u64) 0) | \
-	(((_fc >= 0) && (_fc < 64)) ? \
-		(((u64) 1) << _fc) : (u64) 0) | \
-	(((_fd >= 0) && (_fd < 64)) ? \
-		(((u64) 1) << _fd) : (u64) 0) | \
-	(((_fe >= 0) && (_fe < 64)) ? \
-		(((u64) 1) << _fe) : (u64) 0) | \
-	(((_ff >= 0) && (_ff < 64)) ? \
-		(((u64) 1) << _ff) : (u64) 0) | \
-	(((_fg >= 0) && (_fg < 64)) ? \
-		(((u64) 1) << _fg) : (u64) 0) | \
-	(((_fh >= 0) && (_fh < 64)) ? \
-		(((u64) 1) << _fh) : (u64) 0) | \
-	(((_fi >= 0) && (_fi < 64)) ? \
-		(((u64) 1) << _fi) : (u64) 0) | \
-	(((_fj >= 0) && (_fj < 64)) ? \
-		(((u64) 1) << _fj) : (u64) 0) | \
-	(((_fk >= 0) && (_fk < 64)) ? \
-		(((u64) 1) << _fk) : (u64) 0) | \
-	(((_fl >= 0) && (_fl < 64)) ? \
-		(((u64) 1) << _fl) : (u64) 0) | \
-			((((_fa > 63) && (_fa < 128)) ? \
-			(((u64) 1) << (_fa - 64)) : (u64) 0) | \
-	(((_fb > 63) && (_fb < 128)) ? \
-		(((u64) 1) << (_fb - 64)) : (u64) 0) | \
-	(((_fc > 63) && (_fc < 128)) ? \
-		(((u64) 1) << (_fc - 64)) : (u64) 0) | \
-	(((_fd > 63) && (_fd < 128)) ? \
-		(((u64) 1) << (_fd - 64)) : (u64) 0) | \
-	(((_fe > 63) && (_fe < 128)) ? \
-		(((u64) 1) << (_fe - 64)) : (u64) 0) | \
-	(((_ff > 63) && (_ff < 128)) ? \
-		(((u64) 1) << (_ff - 64)) : (u64) 0) | \
-	(((_fg > 63) && (_fg < 128)) ? \
-		(((u64) 1) << (_fg - 64)) : (u64) 0) | \
-	(((_fh > 63) && (_fh < 128)) ? \
-		(((u64) 1) << (_fh - 64)) : (u64) 0) | \
-	(((_fi > 63) && (_fi < 128)) ? \
-		(((u64) 1) << (_fi - 64)) : (u64) 0) | \
-	(((_fj > 63) && (_fj < 128)) ? \
-		(((u64) 1) << (_fj - 64)) : (u64) 0) | \
-	(((_fk > 63) && (_fk < 128)) ? \
-		(((u64) 1) << (_fk - 64)) : (u64) 0) | \
-	(((_fl > 63) && (_fl < 128)) ? \
-		(((u64) 1) << (_fl - 64)) : (u64) 0)))}
-
-#define DEF_REGDMN      FCC1_FCCA
-#define DEF_DMN_5       FCC1
-#define DEF_DMN_2       FCCA
 #define COUNTRY_ERD_FLAG        0x8000
 #define WORLDWIDE_ROAMING_FLAG  0x4000
-#define SUPER_DOMAIN_MASK   0x0fff
-#define COUNTRY_CODE_MASK   0x3fff
-#define CF_INTERFERENCE     (CHANNEL_CW_INT | CHANNEL_RADAR_INT)
-#define CHANNEL_14      (2484)
-#define IS_11G_CH14(_ch,_cf) \
-    (((_ch) == CHANNEL_14) && ((_cf) == CHANNEL_G))
-
-#define NO_PSCAN    0x0ULL
-#define PSCAN_FCC   0x0000000000000001ULL
-#define PSCAN_FCC_T 0x0000000000000002ULL
-#define PSCAN_ETSI  0x0000000000000004ULL
-#define PSCAN_MKK1  0x0000000000000008ULL
-#define PSCAN_MKK2  0x0000000000000010ULL
-#define PSCAN_MKKA  0x0000000000000020ULL
-#define PSCAN_MKKA_G    0x0000000000000040ULL
-#define PSCAN_ETSIA 0x0000000000000080ULL
-#define PSCAN_ETSIB 0x0000000000000100ULL
-#define PSCAN_ETSIC 0x0000000000000200ULL
-#define PSCAN_WWR   0x0000000000000400ULL
-#define PSCAN_MKKA1 0x0000000000000800ULL
-#define PSCAN_MKKA1_G   0x0000000000001000ULL
-#define PSCAN_MKKA2 0x0000000000002000ULL
-#define PSCAN_MKKA2_G   0x0000000000004000ULL
-#define PSCAN_MKK3  0x0000000000008000ULL
-#define PSCAN_DEFER 0x7FFFFFFFFFFFFFFFULL
-#define IS_ECM_CHAN 0x8000000000000000ULL
 
 #define isWwrSKU(_ah) \
 	(((ath9k_regd_get_eepromRD((_ah)) & WORLD_SKU_MASK) == \
 		WORLD_SKU_PREFIX) || \
 		(ath9k_regd_get_eepromRD(_ah) == WORLD))
 
-#define isWwrSKU_NoMidband(_ah) \
-	((ath9k_regd_get_eepromRD((_ah)) == WOR3_WORLD) || \
-	(ath9k_regd_get_eepromRD(_ah) == WOR4_WORLD) || \
-	(ath9k_regd_get_eepromRD(_ah) == WOR5_ETSIC))
-
-#define isUNII1OddChan(ch) \
-	((ch == 5170) || (ch == 5190) || (ch == 5210) || (ch == 5230))
-
-#define IS_HT40_MODE(_mode)					\
-	(((_mode == ATH9K_MODE_11NA_HT40PLUS  ||		\
-	   _mode == ATH9K_MODE_11NG_HT40PLUS    ||		\
-	   _mode == ATH9K_MODE_11NA_HT40MINUS   ||		\
-	   _mode == ATH9K_MODE_11NG_HT40MINUS) ? true : false))
-
-#define CHAN_FLAGS      (CHANNEL_ALL|CHANNEL_HALF|CHANNEL_QUARTER)
-
-#define swap_array(_a, _b, _size) {                   \
-	u8 *s = _b;                       \
-	int i = _size;                          \
-	do {                                    \
-		u8 tmp = *_a;             \
-		*_a++ = *s;                     \
-		*s++ = tmp;                     \
-	} while (--i);                          \
-	_a -= _size;                            \
-}
-
-
-#define HALF_MAXCHANBW          10
-
 #define MULTI_DOMAIN_MASK 0xFF00
 
 #define WORLD_SKU_MASK          0x00F0
@@ -147,81 +35,16 @@
 #define CHANNEL_HALF_BW         10
 #define CHANNEL_QUARTER_BW      5
 
-typedef int ath_hal_cmp_t(const void *, const void *);
-
 struct reg_dmn_pair_mapping {
 	u16 regDmnEnum;
-	u16 regDmn5GHz;
-	u16 regDmn2GHz;
-	u32 flags5GHz;
-	u32 flags2GHz;
-	u64 pscanMask;
-	u16 singleCC;
-};
-
-struct ccmap {
-	char isoName[3];
-	u16 countryCode;
+	u16 reg_5ghz_ctl;
+	u16 reg_2ghz_ctl;
 };
 
 struct country_code_to_enum_rd {
 	u16 countryCode;
 	u16 regDmnEnum;
 	const char *isoName;
-	const char *name;
-	bool allow11g;
-	bool allow11aTurbo;
-	bool allow11gTurbo;
-	bool allow11ng20;
-	bool allow11ng40;
-	bool allow11na20;
-	bool allow11na40;
-	u16 outdoorChanStart;
-};
-
-struct RegDmnFreqBand {
-	u16 lowChannel;
-	u16 highChannel;
-	u8 powerDfs;
-	u8 antennaMax;
-	u8 channelBW;
-	u8 channelSep;
-	u64 useDfs;
-	u64 usePassScan;
-	u8 regClassId;
-};
-
-struct regDomain {
-	u16 regDmnEnum;
-	u8 conformanceTestLimit;
-	u64 dfsMask;
-	u64 pscan;
-	u32 flags;
-	u64 chan11a[BMLEN];
-	u64 chan11a_turbo[BMLEN];
-	u64 chan11a_dyn_turbo[BMLEN];
-	u64 chan11b[BMLEN];
-	u64 chan11g[BMLEN];
-	u64 chan11g_turbo[BMLEN];
-};
-
-struct cmode {
-	u32 mode;
-	u32 flags;
-};
-
-#define YES true
-#define NO  false
-
-struct japan_bandcheck {
-	u16 freqbandbit;
-	u32 eepromflagtocheck;
-};
-
-struct common_mode_power {
-	u16 lchan;
-	u16 hchan;
-	u8 pwrlvl;
 };
 
 enum CountryCode {