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path: root/drivers/net/wireless/ath/ath9k/main.c
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-rw-r--r--drivers/net/wireless/ath/ath9k/main.c2885
1 files changed, 2885 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
new file mode 100644
index 00000000000..f7baa406918
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -0,0 +1,2885 @@
+/*
+ * Copyright (c) 2008-2009 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/nl80211.h>
+#include "ath9k.h"
+
+#define ATH_PCI_VERSION "0.1"
+
+static char *dev_info = "ath9k";
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
+MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static int modparam_nohwcrypt;
+module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
+MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
+
+/* 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 = 20, \
+}
+
+#define CHAN5G(_freq, _idx) { \
+ .band = IEEE80211_BAND_5GHZ, \
+ .center_freq = (_freq), \
+ .hw_value = (_idx), \
+ .max_power = 20, \
+}
+
+/* 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)
+{
+ switch (conf->channel->band) {
+ case IEEE80211_BAND_2GHZ:
+ if (conf_is_ht20(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NG_HT20];
+ else if (conf_is_ht40_minus(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS];
+ else if (conf_is_ht40_plus(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS];
+ else
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11G];
+ break;
+ case IEEE80211_BAND_5GHZ:
+ if (conf_is_ht20(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NA_HT20];
+ else if (conf_is_ht40_minus(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS];
+ else if (conf_is_ht40_plus(conf))
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS];
+ else
+ sc->cur_rate_table =
+ sc->hw_rate_table[ATH9K_MODE_11A];
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+}
+
+static void ath_update_txpow(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ u32 txpow;
+
+ if (sc->curtxpow != sc->config.txpowlimit) {
+ ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
+ /* read back in case value is clamped */
+ ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
+ sc->curtxpow = txpow;
+ }
+}
+
+static u8 parse_mpdudensity(u8 mpdudensity)
+{
+ /*
+ * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
+ * 0 for no restriction
+ * 1 for 1/4 us
+ * 2 for 1/2 us
+ * 3 for 1 us
+ * 4 for 2 us
+ * 5 for 4 us
+ * 6 for 8 us
+ * 7 for 16 us
+ */
+ switch (mpdudensity) {
+ case 0:
+ return 0;
+ case 1:
+ case 2:
+ case 3:
+ /* Our lower layer calculations limit our precision to
+ 1 microsecond */
+ return 1;
+ case 4:
+ return 2;
+ case 5:
+ return 4;
+ case 6:
+ return 8;
+ case 7:
+ return 16;
+ default:
+ return 0;
+ }
+}
+
+static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band)
+{
+ const struct ath_rate_table *rate_table = NULL;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate;
+ int i, maxrates;
+
+ switch (band) {
+ case IEEE80211_BAND_2GHZ:
+ rate_table = sc->hw_rate_table[ATH9K_MODE_11G];
+ break;
+ case IEEE80211_BAND_5GHZ:
+ rate_table = sc->hw_rate_table[ATH9K_MODE_11A];
+ break;
+ default:
+ break;
+ }
+
+ if (rate_table == NULL)
+ return;
+
+ sband = &sc->sbands[band];
+ rate = sc->rates[band];
+
+ if (rate_table->rate_cnt > ATH_RATE_MAX)
+ maxrates = ATH_RATE_MAX;
+ else
+ maxrates = rate_table->rate_cnt;
+
+ for (i = 0; i < maxrates; i++) {
+ rate[i].bitrate = rate_table->info[i].ratekbps / 100;
+ rate[i].hw_value = rate_table->info[i].ratecode;
+ if (rate_table->info[i].short_preamble) {
+ rate[i].hw_value_short = rate_table->info[i].ratecode |
+ rate_table->info[i].short_preamble;
+ rate[i].flags = IEEE80211_RATE_SHORT_PREAMBLE;
+ }
+ sband->n_bitrates++;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n",
+ rate[i].bitrate / 10, rate[i].hw_value);
+ }
+}
+
+/*
+ * 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
+ * DMA, then restart stuff.
+*/
+int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
+ struct ath9k_channel *hchan)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ bool fastcc = true, stopped;
+ struct ieee80211_channel *channel = hw->conf.channel;
+ int r;
+
+ if (sc->sc_flags & SC_OP_INVALID)
+ return -EIO;
+
+ ath9k_ps_wakeup(sc);
+
+ /*
+ * This is only performed if the channel settings have
+ * actually changed.
+ *
+ * To switch channels clear any pending DMA operations;
+ * wait long enough for the RX fifo to drain, reset the
+ * hardware at the new frequency, and then re-enable
+ * the relevant bits of the h/w.
+ */
+ ath9k_hw_set_interrupts(ah, 0);
+ ath_drain_all_txq(sc, false);
+ stopped = ath_stoprecv(sc);
+
+ /* XXX: do not flush receive queue here. We don't want
+ * to flush data frames already in queue because of
+ * changing channel. */
+
+ if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
+ fastcc = false;
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "(%u MHz) -> (%u MHz), chanwidth: %d\n",
+ sc->sc_ah->curchan->channel,
+ channel->center_freq, sc->tx_chan_width);
+
+ spin_lock_bh(&sc->sc_resetlock);
+
+ r = ath9k_hw_reset(ah, hchan, fastcc);
+ if (r) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset channel (%u Mhz) "
+ "reset status %d\n",
+ channel->center_freq, r);
+ spin_unlock_bh(&sc->sc_resetlock);
+ return r;
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ sc->sc_flags &= ~SC_OP_FULL_RESET;
+
+ if (ath_startrecv(sc) != 0) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to restart recv logic\n");
+ return -EIO;
+ }
+
+ ath_cache_conf_rate(sc, &hw->conf);
+ ath_update_txpow(sc);
+ ath9k_hw_set_interrupts(ah, sc->imask);
+ ath9k_ps_restore(sc);
+ return 0;
+}
+
+/*
+ * This routine performs the periodic noise floor calibration function
+ * that is used to adjust and optimize the chip performance. This
+ * takes environmental changes (location, temperature) into account.
+ * When the task is complete, it reschedules itself depending on the
+ * appropriate interval that was calculated.
+ */
+static void ath_ani_calibrate(unsigned long data)
+{
+ struct ath_softc *sc = (struct ath_softc *)data;
+ struct ath_hw *ah = sc->sc_ah;
+ bool longcal = false;
+ bool shortcal = false;
+ bool aniflag = false;
+ unsigned int timestamp = jiffies_to_msecs(jiffies);
+ u32 cal_interval, short_cal_interval;
+
+ short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
+ ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
+
+ /*
+ * don't calibrate when we're scanning.
+ * we are most likely not on our home channel.
+ */
+ if (sc->sc_flags & SC_OP_SCANNING)
+ goto set_timer;
+
+ /* Only calibrate if awake */
+ if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
+ goto set_timer;
+
+ ath9k_ps_wakeup(sc);
+
+ /* Long calibration runs independently of short calibration. */
+ if ((timestamp - sc->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
+ longcal = true;
+ DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
+ sc->ani.longcal_timer = timestamp;
+ }
+
+ /* Short calibration applies only while caldone is false */
+ if (!sc->ani.caldone) {
+ if ((timestamp - sc->ani.shortcal_timer) >= short_cal_interval) {
+ shortcal = true;
+ DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies);
+ sc->ani.shortcal_timer = timestamp;
+ sc->ani.resetcal_timer = timestamp;
+ }
+ } else {
+ if ((timestamp - sc->ani.resetcal_timer) >=
+ ATH_RESTART_CALINTERVAL) {
+ sc->ani.caldone = ath9k_hw_reset_calvalid(ah);
+ if (sc->ani.caldone)
+ sc->ani.resetcal_timer = timestamp;
+ }
+ }
+
+ /* Verify whether we must check ANI */
+ if ((timestamp - sc->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
+ aniflag = true;
+ sc->ani.checkani_timer = timestamp;
+ }
+
+ /* Skip all processing if there's nothing to do. */
+ if (longcal || shortcal || aniflag) {
+ /* Call ANI routine if necessary */
+ if (aniflag)
+ ath9k_hw_ani_monitor(ah, &sc->nodestats, ah->curchan);
+
+ /* Perform calibration if necessary */
+ if (longcal || shortcal) {
+ sc->ani.caldone = ath9k_hw_calibrate(ah, ah->curchan,
+ sc->rx_chainmask, longcal);
+
+ if (longcal)
+ sc->ani.noise_floor = ath9k_hw_getchan_noise(ah,
+ ah->curchan);
+
+ DPRINTF(sc, ATH_DBG_ANI," calibrate chan %u/%x nf: %d\n",
+ ah->curchan->channel, ah->curchan->channelFlags,
+ sc->ani.noise_floor);
+ }
+ }
+
+ ath9k_ps_restore(sc);
+
+set_timer:
+ /*
+ * Set timer interval based on previous results.
+ * The interval must be the shortest necessary to satisfy ANI,
+ * short calibration and long calibration.
+ */
+ cal_interval = ATH_LONG_CALINTERVAL;
+ if (sc->sc_ah->config.enable_ani)
+ cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
+ if (!sc->ani.caldone)
+ cal_interval = min(cal_interval, (u32)short_cal_interval);
+
+ mod_timer(&sc->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
+}
+
+static void ath_start_ani(struct ath_softc *sc)
+{
+ unsigned long timestamp = jiffies_to_msecs(jiffies);
+
+ sc->ani.longcal_timer = timestamp;
+ sc->ani.shortcal_timer = timestamp;
+ sc->ani.checkani_timer = timestamp;
+
+ mod_timer(&sc->ani.timer,
+ jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
+}
+
+/*
+ * Update tx/rx chainmask. For legacy association,
+ * hard code chainmask to 1x1, for 11n association, use
+ * the chainmask configuration, for bt coexistence, use
+ * the chainmask configuration even in legacy mode.
+ */
+void ath_update_chainmask(struct ath_softc *sc, int is_ht)
+{
+ if (is_ht ||
+ (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BT_COEX)) {
+ sc->tx_chainmask = sc->sc_ah->caps.tx_chainmask;
+ sc->rx_chainmask = sc->sc_ah->caps.rx_chainmask;
+ } else {
+ sc->tx_chainmask = 1;
+ sc->rx_chainmask = 1;
+ }
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n",
+ sc->tx_chainmask, sc->rx_chainmask);
+}
+
+static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
+{
+ struct ath_node *an;
+
+ an = (struct ath_node *)sta->drv_priv;
+
+ if (sc->sc_flags & SC_OP_TXAGGR) {
+ ath_tx_node_init(sc, an);
+ an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
+ sta->ht_cap.ampdu_factor);
+ an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
+ }
+}
+
+static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
+{
+ struct ath_node *an = (struct ath_node *)sta->drv_priv;
+
+ if (sc->sc_flags & SC_OP_TXAGGR)
+ ath_tx_node_cleanup(sc, an);
+}
+
+static void ath9k_tasklet(unsigned long data)
+{
+ struct ath_softc *sc = (struct ath_softc *)data;
+ u32 status = sc->intrstatus;
+
+ ath9k_ps_wakeup(sc);
+
+ if (status & ATH9K_INT_FATAL) {
+ ath_reset(sc, false);
+ ath9k_ps_restore(sc);
+ return;
+ }
+
+ if (status & (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) {
+ spin_lock_bh(&sc->rx.rxflushlock);
+ ath_rx_tasklet(sc, 0);
+ spin_unlock_bh(&sc->rx.rxflushlock);
+ }
+
+ if (status & ATH9K_INT_TX)
+ ath_tx_tasklet(sc);
+
+ if ((status & ATH9K_INT_TSFOOR) &&
+ (sc->hw->conf.flags & IEEE80211_CONF_PS)) {
+ /*
+ * TSF sync does not look correct; remain awake to sync with
+ * the next Beacon.
+ */
+ DPRINTF(sc, ATH_DBG_PS, "TSFOOR - Sync with next Beacon\n");
+ sc->sc_flags |= SC_OP_WAIT_FOR_BEACON | SC_OP_BEACON_SYNC;
+ }
+
+ /* re-enable hardware interrupt */
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
+ ath9k_ps_restore(sc);
+}
+
+irqreturn_t ath_isr(int irq, void *dev)
+{
+#define SCHED_INTR ( \
+ ATH9K_INT_FATAL | \
+ ATH9K_INT_RXORN | \
+ ATH9K_INT_RXEOL | \
+ ATH9K_INT_RX | \
+ ATH9K_INT_TX | \
+ ATH9K_INT_BMISS | \
+ ATH9K_INT_CST | \
+ ATH9K_INT_TSFOOR)
+
+ struct ath_softc *sc = dev;
+ struct ath_hw *ah = sc->sc_ah;
+ enum ath9k_int status;
+ bool sched = false;
+
+ /*
+ * The hardware is not ready/present, don't
+ * touch anything. Note this can happen early
+ * on if the IRQ is shared.
+ */
+ if (sc->sc_flags & SC_OP_INVALID)
+ return IRQ_NONE;
+
+
+ /* shared irq, not for us */
+
+ if (!ath9k_hw_intrpend(ah))
+ return IRQ_NONE;
+
+ /*
+ * Figure out the reason(s) for the interrupt. Note
+ * that the hal returns a pseudo-ISR that may include
+ * bits we haven't explicitly enabled so we mask the
+ * value to insure we only process bits we requested.
+ */
+ ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
+ status &= sc->imask; /* discard unasked-for bits */
+
+ /*
+ * If there are no status bits set, then this interrupt was not
+ * for me (should have been caught above).
+ */
+ if (!status)
+ return IRQ_NONE;
+
+ /* Cache the status */
+ sc->intrstatus = status;
+
+ if (status & SCHED_INTR)
+ sched = true;
+
+ /*
+ * If a FATAL or RXORN interrupt is received, we have to reset the
+ * chip immediately.
+ */
+ if (status & (ATH9K_INT_FATAL | ATH9K_INT_RXORN))
+ goto chip_reset;
+
+ if (status & ATH9K_INT_SWBA)
+ tasklet_schedule(&sc->bcon_tasklet);
+
+ if (status & ATH9K_INT_TXURN)
+ ath9k_hw_updatetxtriglevel(ah, true);
+
+ if (status & ATH9K_INT_MIB) {
+ /*
+ * Disable interrupts until we service the MIB
+ * interrupt; otherwise it will continue to
+ * fire.
+ */
+ ath9k_hw_set_interrupts(ah, 0);
+ /*
+ * Let the hal handle the event. We assume
+ * it will clear whatever condition caused
+ * the interrupt.
+ */
+ ath9k_hw_procmibevent(ah, &sc->nodestats);
+ ath9k_hw_set_interrupts(ah, sc->imask);
+ }
+
+ if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
+ if (status & ATH9K_INT_TIM_TIMER) {
+ /* Clear RxAbort bit so that we can
+ * receive frames */
+ ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
+ ath9k_hw_setrxabort(sc->sc_ah, 0);
+ sc->sc_flags |= SC_OP_WAIT_FOR_BEACON;
+ }
+
+chip_reset:
+
+ ath_debug_stat_interrupt(sc, status);
+
+ if (sched) {
+ /* turn off every interrupt except SWBA */
+ ath9k_hw_set_interrupts(ah, (sc->imask & ATH9K_INT_SWBA));
+ tasklet_schedule(&sc->intr_tq);
+ }
+
+ return IRQ_HANDLED;
+
+#undef SCHED_INTR
+}
+
+static u32 ath_get_extchanmode(struct ath_softc *sc,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type)
+{
+ u32 chanmode = 0;
+
+ switch (chan->band) {
+ case IEEE80211_BAND_2GHZ:
+ switch(channel_type) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ chanmode = CHANNEL_G_HT20;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ chanmode = CHANNEL_G_HT40PLUS;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ chanmode = CHANNEL_G_HT40MINUS;
+ break;
+ }
+ break;
+ case IEEE80211_BAND_5GHZ:
+ switch(channel_type) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ chanmode = CHANNEL_A_HT20;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ chanmode = CHANNEL_A_HT40PLUS;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ chanmode = CHANNEL_A_HT40MINUS;
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return chanmode;
+}
+
+static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key,
+ struct ath9k_keyval *hk, const u8 *addr,
+ bool authenticator)
+{
+ const u8 *key_rxmic;
+ const u8 *key_txmic;
+
+ key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
+ key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
+
+ if (addr == NULL) {
+ /*
+ * Group key installation - only two key cache entries are used
+ * regardless of splitmic capability since group key is only
+ * used either for TX or RX.
+ */
+ if (authenticator) {
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
+ } else {
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
+ }
+ return ath9k_hw_set_keycache_entry(sc->sc_ah, keyix, hk, addr);
+ }
+ if (!sc->splitmic) {
+ /* TX and RX keys share the same key cache entry. */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
+ return ath9k_hw_set_keycache_entry(sc->sc_ah, keyix, hk, addr);
+ }
+
+ /* Separate key cache entries for TX and RX */
+
+ /* TX key goes at first index, RX key at +32. */
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ if (!ath9k_hw_set_keycache_entry(sc->sc_ah, keyix, hk, NULL)) {
+ /* TX MIC entry failed. No need to proceed further */
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Setting TX MIC Key Failed\n");
+ return 0;
+ }
+
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ /* XXX delete tx key on failure? */
+ return ath9k_hw_set_keycache_entry(sc->sc_ah, keyix + 32, hk, addr);
+}
+
+static int ath_reserve_key_cache_slot_tkip(struct ath_softc *sc)
+{
+ int i;
+
+ for (i = IEEE80211_WEP_NKID; i < sc->keymax / 2; i++) {
+ if (test_bit(i, sc->keymap) ||
+ test_bit(i + 64, sc->keymap))
+ continue; /* At least one part of TKIP key allocated */
+ if (sc->splitmic &&
+ (test_bit(i + 32, sc->keymap) ||
+ test_bit(i + 64 + 32, sc->keymap)))
+ continue; /* At least one part of TKIP key allocated */
+
+ /* Found a free slot for a TKIP key */
+ return i;
+ }
+ return -1;
+}
+
+static int ath_reserve_key_cache_slot(struct ath_softc *sc)
+{
+ int i;
+
+ /* First, try to find slots that would not be available for TKIP. */
+ if (sc->splitmic) {
+ for (i = IEEE80211_WEP_NKID; i < sc->keymax / 4; i++) {
+ if (!test_bit(i, sc->keymap) &&
+ (test_bit(i + 32, sc->keymap) ||
+ test_bit(i + 64, sc->keymap) ||
+ test_bit(i + 64 + 32, sc->keymap)))
+ return i;
+ if (!test_bit(i + 32, sc->keymap) &&
+ (test_bit(i, sc->keymap) ||
+ test_bit(i + 64, sc->keymap) ||
+ test_bit(i + 64 + 32, sc->keymap)))
+ return i + 32;
+ if (!test_bit(i + 64, sc->keymap) &&
+ (test_bit(i , sc->keymap) ||
+ test_bit(i + 32, sc->keymap) ||
+ test_bit(i + 64 + 32, sc->keymap)))
+ return i + 64;
+ if (!test_bit(i + 64 + 32, sc->keymap) &&
+ (test_bit(i, sc->keymap) ||
+ test_bit(i + 32, sc->keymap) ||
+ test_bit(i + 64, sc->keymap)))
+ return i + 64 + 32;
+ }
+ } else {
+ for (i = IEEE80211_WEP_NKID; i < sc->keymax / 2; i++) {
+ if (!test_bit(i, sc->keymap) &&
+ test_bit(i + 64, sc->keymap))
+ return i;
+ if (test_bit(i, sc->keymap) &&
+ !test_bit(i + 64, sc->keymap))
+ return i + 64;
+ }
+ }
+
+ /* No partially used TKIP slots, pick any available slot */
+ for (i = IEEE80211_WEP_NKID; i < sc->keymax; i++) {
+ /* Do not allow slots that could be needed for TKIP group keys
+ * to be used. This limitation could be removed if we know that
+ * TKIP will not be used. */
+ if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
+ continue;
+ if (sc->splitmic) {
+ if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
+ continue;
+ if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
+ continue;
+ }
+
+ if (!test_bit(i, sc->keymap))
+ return i; /* Found a free slot for a key */
+ }
+
+ /* No free slot found */
+ return -1;
+}
+
+static int ath_key_config(struct ath_softc *sc,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct ath9k_keyval hk;
+ const u8 *mac = NULL;
+ int ret = 0;
+ int idx;
+
+ memset(&hk, 0, sizeof(hk));
+
+ switch (key->alg) {
+ case ALG_WEP:
+ hk.kv_type = ATH9K_CIPHER_WEP;
+ break;
+ case ALG_TKIP:
+ hk.kv_type = ATH9K_CIPHER_TKIP;
+ break;
+ case ALG_CCMP:
+ hk.kv_type = ATH9K_CIPHER_AES_CCM;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ hk.kv_len = key->keylen;
+ memcpy(hk.kv_val, key->key, key->keylen);
+
+ if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+ /* For now, use the default keys for broadcast keys. This may
+ * need to change with virtual interfaces. */
+ idx = key->keyidx;
+ } else if (key->keyidx) {
+ if (WARN_ON(!sta))
+ return -EOPNOTSUPP;
+ mac = sta->addr;
+
+ if (vif->type != NL80211_IFTYPE_AP) {
+ /* Only keyidx 0 should be used with unicast key, but
+ * allow this for client mode for now. */
+ idx = key->keyidx;
+ } else
+ return -EIO;
+ } else {
+ if (WARN_ON(!sta))
+ return -EOPNOTSUPP;
+ mac = sta->addr;
+
+ if (key->alg == ALG_TKIP)
+ idx = ath_reserve_key_cache_slot_tkip(sc);
+ else
+ idx = ath_reserve_key_cache_slot(sc);
+ if (idx < 0)
+ return -ENOSPC; /* no free key cache entries */
+ }
+
+ if (key->alg == ALG_TKIP)
+ ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac,
+ vif->type == NL80211_IFTYPE_AP);
+ else
+ ret = ath9k_hw_set_keycache_entry(sc->sc_ah, idx, &hk, mac);
+
+ if (!ret)
+ return -EIO;
+
+ set_bit(idx, sc->keymap);
+ if (key->alg == ALG_TKIP) {
+ set_bit(idx + 64, sc->keymap);
+ if (sc->splitmic) {
+ set_bit(idx + 32, sc->keymap);
+ set_bit(idx + 64 + 32, sc->keymap);
+ }
+ }
+
+ return idx;
+}
+
+static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
+{
+ ath9k_hw_keyreset(sc->sc_ah, key->hw_key_idx);
+ if (key->hw_key_idx < IEEE80211_WEP_NKID)
+ return;
+
+ clear_bit(key->hw_key_idx, sc->keymap);
+ if (key->alg != ALG_TKIP)
+ return;
+
+ clear_bit(key->hw_key_idx + 64, sc->keymap);
+ if (sc->splitmic) {
+ clear_bit(key->hw_key_idx + 32, sc->keymap);
+ clear_bit(key->hw_key_idx + 64 + 32, sc->keymap);
+ }
+}
+
+static void setup_ht_cap(struct ath_softc *sc,
+ struct ieee80211_sta_ht_cap *ht_info)
+{
+#define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
+#define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
+
+ ht_info->ht_supported = true;
+ ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+ IEEE80211_HT_CAP_SM_PS |
+ IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_DSSSCCK40;
+
+ ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
+ ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
+
+ /* set up supported mcs set */
+ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
+
+ switch(sc->rx_chainmask) {
+ case 1:
+ ht_info->mcs.rx_mask[0] = 0xff;
+ break;
+ case 3:
+ case 5:
+ case 7:
+ default:
+ ht_info->mcs.rx_mask[0] = 0xff;
+ ht_info->mcs.rx_mask[1] = 0xff;
+ break;
+ }
+
+ ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
+}
+
+static void ath9k_bss_assoc_info(struct ath_softc *sc,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ath_vif *avp = (void *)vif->drv_priv;
+
+ if (bss_conf->assoc) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info ASSOC %d, bssid: %pM\n",
+ bss_conf->aid, sc->curbssid);
+
+ /* New association, store aid */
+ if (avp->av_opmode == NL80211_IFTYPE_STATION) {
+ sc->curaid = bss_conf->aid;
+ ath9k_hw_write_associd(sc);
+
+ /*
+ * Request a re-configuration of Beacon related timers
+ * on the receipt of the first Beacon frame (i.e.,
+ * after time sync with the AP).
+ */
+ sc->sc_flags |= SC_OP_BEACON_SYNC;
+ }
+
+ /* Configure the beacon */
+ ath_beacon_config(sc, vif);
+
+ /* Reset rssi stats */
+ sc->nodestats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->nodestats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->nodestats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->nodestats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
+
+ ath_start_ani(sc);
+ } else {
+ DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
+ sc->curaid = 0;
+ }
+}
+
+/********************************/
+/* LED functions */
+/********************************/
+
+static void ath_led_blink_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc,
+ ath_led_blink_work.work);
+
+ if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED))
+ return;
+
+ if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
+ (sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
+ else
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
+ (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0);
+
+ queue_delayed_work(sc->hw->workqueue, &sc->ath_led_blink_work,
+ (sc->sc_flags & SC_OP_LED_ON) ?
+ msecs_to_jiffies(sc->led_off_duration) :
+ msecs_to_jiffies(sc->led_on_duration));
+
+ sc->led_on_duration = sc->led_on_cnt ?
+ max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) :
+ ATH_LED_ON_DURATION_IDLE;
+ sc->led_off_duration = sc->led_off_cnt ?
+ max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) :
+ ATH_LED_OFF_DURATION_IDLE;
+ sc->led_on_cnt = sc->led_off_cnt = 0;
+ if (sc->sc_flags & SC_OP_LED_ON)
+ sc->sc_flags &= ~SC_OP_LED_ON;
+ else
+ sc->sc_flags |= SC_OP_LED_ON;
+}
+
+static void ath_led_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
+ struct ath_softc *sc = led->sc;
+
+ switch (brightness) {
+ case LED_OFF:
+ if (led->led_type == ATH_LED_ASSOC ||
+ led->led_type == ATH_LED_RADIO) {
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
+ (led->led_type == ATH_LED_RADIO));
+ sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+ if (led->led_type == ATH_LED_RADIO)
+ sc->sc_flags &= ~SC_OP_LED_ON;
+ } else {
+ sc->led_off_cnt++;
+ }
+ break;
+ case LED_FULL:
+ if (led->led_type == ATH_LED_ASSOC) {
+ sc->sc_flags |= SC_OP_LED_ASSOCIATED;
+ queue_delayed_work(sc->hw->workqueue,
+ &sc->ath_led_blink_work, 0);
+ } else if (led->led_type == ATH_LED_RADIO) {
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
+ sc->sc_flags |= SC_OP_LED_ON;
+ } else {
+ sc->led_on_cnt++;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
+ char *trigger)
+{
+ int ret;
+
+ led->sc = sc;
+ led->led_cdev.name = led->name;
+ led->led_cdev.default_trigger = trigger;
+ led->led_cdev.brightness_set = ath_led_brightness;
+
+ ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
+ if (ret)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Failed to register led:%s", led->name);
+ else
+ led->registered = 1;
+ return ret;
+}
+
+static void ath_unregister_led(struct ath_led *led)
+{
+ if (led->registered) {
+ led_classdev_unregister(&led->led_cdev);
+ led->registered = 0;
+ }
+}
+
+static void ath_deinit_leds(struct ath_softc *sc)
+{
+ cancel_delayed_work_sync(&sc->ath_led_blink_work);
+ ath_unregister_led(&sc->assoc_led);
+ sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+ ath_unregister_led(&sc->tx_led);
+ ath_unregister_led(&sc->rx_led);
+ ath_unregister_led(&sc->radio_led);
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+}
+
+static void ath_init_leds(struct ath_softc *sc)
+{
+ char *trigger;
+ int ret;
+
+ /* Configure gpio 1 for output */
+ ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ /* LED off, active low */
+ ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+
+ INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);
+
+ trigger = ieee80211_get_radio_led_name(sc->hw);
+ snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
+ "ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->radio_led, trigger);
+ sc->radio_led.led_type = ATH_LED_RADIO;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_assoc_led_name(sc->hw);
+ snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
+ "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->assoc_led, trigger);
+ sc->assoc_led.led_type = ATH_LED_ASSOC;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_tx_led_name(sc->hw);
+ snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
+ "ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->tx_led, trigger);
+ sc->tx_led.led_type = ATH_LED_TX;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_rx_led_name(sc->hw);
+ snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
+ "ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
+ ret = ath_register_led(sc, &sc->rx_led, trigger);
+ sc->rx_led.led_type = ATH_LED_RX;
+ if (ret)
+ goto fail;
+
+ return;
+
+fail:
+ ath_deinit_leds(sc);
+}
+
+void ath_radio_enable(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ieee80211_channel *channel = sc->hw->conf.channel;
+ int r;
+
+ ath9k_ps_wakeup(sc);
+ ath9k_hw_configpcipowersave(ah, 0);
+
+ spin_lock_bh(&sc->sc_resetlock);
+ r = ath9k_hw_reset(ah, ah->curchan, false);
+ if (r) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset channel %u (%uMhz) ",
+ "reset status %d\n",
+ channel->center_freq, r);
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ ath_update_txpow(sc);
+ if (ath_startrecv(sc) != 0) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to restart recv logic\n");
+ return;
+ }
+
+ if (sc->sc_flags & SC_OP_BEACONS)
+ ath_beacon_config(sc, NULL); /* restart beacons */
+
+ /* Re-Enable interrupts */
+ ath9k_hw_set_interrupts(ah, sc->imask);
+
+ /* Enable LED */
+ ath9k_hw_cfg_output(ah, ATH_LED_PIN,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
+
+ ieee80211_wake_queues(sc->hw);
+ ath9k_ps_restore(sc);
+}
+
+void ath_radio_disable(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ieee80211_channel *channel = sc->hw->conf.channel;
+ int r;
+
+ ath9k_ps_wakeup(sc);
+ ieee80211_stop_queues(sc->hw);
+
+ /* Disable LED */
+ ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
+ ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
+
+ /* Disable interrupts */
+ ath9k_hw_set_interrupts(ah, 0);
+
+ ath_drain_all_txq(sc, false); /* clear pending tx frames */
+ ath_stoprecv(sc); /* turn off frame recv */
+ ath_flushrecv(sc); /* flush recv queue */
+
+ spin_lock_bh(&sc->sc_resetlock);
+ r = ath9k_hw_reset(ah, ah->curchan, false);
+ if (r) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset channel %u (%uMhz) "
+ "reset status %d\n",
+ channel->center_freq, r);
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ ath9k_hw_phy_disable(ah);
+ ath9k_hw_configpcipowersave(ah, 1);
+ ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
+ ath9k_ps_restore(sc);
+}
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+
+/*******************/
+/* Rfkill */
+/*******************/
+
+static bool ath_is_rfkill_set(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+
+ return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
+ ah->rfkill_polarity;
+}
+
+/* s/w rfkill handlers */
+static int ath_rfkill_set_block(void *data, bool blocked)
+{
+ struct ath_softc *sc = data;
+
+ if (blocked)
+ ath_radio_disable(sc);
+ else
+ ath_radio_enable(sc);
+
+ return 0;
+}
+
+static void ath_rfkill_poll_state(struct rfkill *rfkill, void *data)
+{
+ struct ath_softc *sc = data;
+ bool blocked = !!ath_is_rfkill_set(sc);
+
+ if (rfkill_set_hw_state(rfkill, blocked))
+ ath_radio_disable(sc);
+ else
+ ath_radio_enable(sc);
+}
+
+/* Init s/w rfkill */
+static int ath_init_sw_rfkill(struct ath_softc *sc)
+{
+ sc->rf_kill.ops.set_block = ath_rfkill_set_block;
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+ sc->rf_kill.ops.poll = ath_rfkill_poll_state;
+
+ snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
+ "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy));
+
+ sc->rf_kill.rfkill = rfkill_alloc(sc->rf_kill.rfkill_name,
+ wiphy_dev(sc->hw->wiphy),
+ RFKILL_TYPE_WLAN,
+ &sc->rf_kill.ops, sc);
+ if (!sc->rf_kill.rfkill) {
+ DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/* Deinitialize rfkill */
+static void ath_deinit_rfkill(struct ath_softc *sc)
+{
+ if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
+ rfkill_unregister(sc->rf_kill.rfkill);
+ rfkill_destroy(sc->rf_kill.rfkill);
+ sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
+ }
+}
+
+static int ath_start_rfkill_poll(struct ath_softc *sc)
+{
+ if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
+ if (rfkill_register(sc->rf_kill.rfkill)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to register rfkill\n");
+ rfkill_destroy(sc->rf_kill.rfkill);
+
+ /* Deinitialize the device */
+ ath_cleanup(sc);
+ return -EIO;
+ } else {
+ sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
+ }
+ }
+
+ return 0;
+}
+#endif /* CONFIG_RFKILL */
+
+void ath_cleanup(struct ath_softc *sc)
+{
+ ath_detach(sc);
+ free_irq(sc->irq, sc);
+ ath_bus_cleanup(sc);
+ kfree(sc->sec_wiphy);
+ ieee80211_free_hw(sc->hw);
+}
+
+void ath_detach(struct ath_softc *sc)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ int i = 0;
+
+ ath9k_ps_wakeup(sc);
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n");
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+ ath_deinit_rfkill(sc);
+#endif
+ ath_deinit_leds(sc);
+ cancel_work_sync(&sc->chan_work);
+ cancel_delayed_work_sync(&sc->wiphy_work);
+
+ for (i = 0; i < sc->num_sec_wiphy; i++) {
+ struct ath_wiphy *aphy = sc->sec_wiphy[i];
+ if (aphy == NULL)
+ continue;
+ sc->sec_wiphy[i] = NULL;
+ ieee80211_unregister_hw(aphy->hw);
+ ieee80211_free_hw(aphy->hw);
+ }
+ ieee80211_unregister_hw(hw);
+ ath_rx_cleanup(sc);
+ ath_tx_cleanup(sc);
+
+ tasklet_kill(&sc->intr_tq);
+ tasklet_kill(&sc->bcon_tasklet);
+
+ if (!(sc->sc_flags & SC_OP_INVALID))
+ ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
+
+ /* cleanup tx queues */
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+ if (ATH_TXQ_SETUP(sc, i))
+ ath_tx_cleanupq(sc, &sc->tx.txq[i]);
+
+ ath9k_hw_detach(sc->sc_ah);
+ ath9k_exit_debug(sc);
+ ath9k_ps_restore(sc);
+}
+
+static int ath9k_reg_notifier(struct wiphy *wiphy,
+ struct regulatory_request *request)
+{
+ struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_regulatory *reg = &sc->sc_ah->regulatory;
+
+ return ath_reg_notifier_apply(wiphy, request, reg);
+}
+
+static int ath_init(u16 devid, struct ath_softc *sc)
+{
+ struct ath_hw *ah = NULL;
+ int status;
+ int error = 0, i;
+ int csz = 0;
+
+ /* XXX: hardware will not be ready until ath_open() being called */
+ sc->sc_flags |= SC_OP_INVALID;
+
+ if (ath9k_init_debug(sc) < 0)
+ printk(KERN_ERR "Unable to create debugfs files\n");
+
+ spin_lock_init(&sc->wiphy_lock);
+ spin_lock_init(&sc->sc_resetlock);
+ spin_lock_init(&sc->sc_serial_rw);
+ mutex_init(&sc->mutex);
+ tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
+ tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
+ (unsigned long)sc);
+
+ /*
+ * Cache line size is used to size and align various
+ * structures used to communicate with the hardware.
+ */
+ ath_read_cachesize(sc, &csz);
+ /* XXX assert csz is non-zero */
+ sc->cachelsz = csz << 2; /* convert to bytes */
+
+ ah = ath9k_hw_attach(devid, sc, &status);
+ if (ah == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to attach hardware; HAL status %d\n", status);
+ error = -ENXIO;
+ goto bad;
+ }
+ sc->sc_ah = ah;
+
+ /* Get the hardware key cache size. */
+ sc->keymax = ah->caps.keycache_size;
+ if (sc->keymax > ATH_KEYMAX) {
+ DPRINTF(sc, ATH_DBG_ANY,
+ "Warning, using only %u entries in %u key cache\n",
+ ATH_KEYMAX, sc->keymax);
+ sc->keymax = ATH_KEYMAX;
+ }
+
+ /*
+ * Reset the key cache since some parts do not
+ * reset the contents on initial power up.
+ */
+ for (i = 0; i < sc->keymax; i++)
+ ath9k_hw_keyreset(ah, (u16) i);
+
+ if (error)
+ goto bad;
+
+ /* default to MONITOR mode */
+ sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
+
+ /* Setup rate tables */
+
+ ath_rate_attach(sc);
+ ath_setup_rates(sc, IEEE80211_BAND_2GHZ);
+ ath_setup_rates(sc, IEEE80211_BAND_5GHZ);
+
+ /*
+ * Allocate hardware transmit queues: one queue for
+ * beacon frames and one data queue for each QoS
+ * priority. Note that the hal handles reseting
+ * these queues at the needed time.
+ */
+ sc->beacon.beaconq = ath_beaconq_setup(ah);
+ if (sc->beacon.beaconq == -1) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup a beacon xmit queue\n");
+ error = -EIO;
+ goto bad2;
+ }
+ sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
+ if (sc->beacon.cabq == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup CAB xmit queue\n");
+ error = -EIO;
+ goto bad2;
+ }
+
+ sc->config.cabqReadytime = ATH_CABQ_READY_TIME;
+ ath_cabq_update(sc);
+
+ for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++)
+ sc->tx.hwq_map[i] = -1;
+
+ /* Setup data queues */
+ /* NB: ensure BK queue is the lowest priority h/w queue */
+ if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for BK traffic\n");
+ error = -EIO;
+ goto bad2;
+ }
+
+ if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for BE traffic\n");
+ error = -EIO;
+ goto bad2;
+ }
+ if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for VI traffic\n");
+ error = -EIO;
+ goto bad2;
+ }
+ if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for VO traffic\n");
+ error = -EIO;
+ goto bad2;
+ }
+
+ /* Initializes the noise floor to a reasonable default value.
+ * Later on this will be updated during ANI processing. */
+
+ sc->ani.noise_floor = ATH_DEFAULT_NOISE_FLOOR;
+ setup_timer(&sc->ani.timer, ath_ani_calibrate, (unsigned long)sc);
+
+ if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_TKIP, NULL)) {
+ /*
+ * Whether we should enable h/w TKIP MIC.
+ * XXX: if we don't support WME TKIP MIC, then we wouldn't
+ * report WMM capable, so it's always safe to turn on
+ * TKIP MIC in this case.
+ */
+ ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC,
+ 0, 1, NULL);
+ }
+
+ /*
+ * Check whether the separate key cache entries
+ * are required to handle both tx+rx MIC keys.
+ * With split mic keys the number of stations is limited
+ * to 27 otherwise 59.
+ */
+ if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_TKIP, NULL)
+ && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_MIC, NULL)
+ && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT,
+ 0, NULL))
+ sc->splitmic = 1;
+
+ /* turn on mcast key search if possible */
+ if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
+ (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1,
+ 1, NULL);
+
+ sc->config.txpowlimit = ATH_TXPOWER_MAX;
+
+ /* 11n Capabilities */
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
+ sc->sc_flags |= SC_OP_TXAGGR;
+ sc->sc_flags |= SC_OP_RXAGGR;
+ }
+
+ sc->tx_chainmask = ah->caps.tx_chainmask;
+ sc->rx_chainmask = ah->caps.rx_chainmask;
+
+ ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL);
+ sc->rx.defant = ath9k_hw_getdefantenna(ah);
+
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
+ memcpy(sc->bssidmask, ath_bcast_mac, ETH_ALEN);
+
+ sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */
+
+ /* initialize beacon slots */
+ for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
+ sc->beacon.bslot[i] = NULL;
+ sc->beacon.bslot_aphy[i] = NULL;
+ }
+
+ /* setup channels and rates */
+
+ 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->caps.wireless_modes)) {
+ 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->caps.hw_caps & ATH9K_HW_CAP_BT_COEX)
+ ath9k_hw_btcoex_enable(sc->sc_ah);
+
+ return 0;
+bad2:
+ /* cleanup tx queues */
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+ if (ATH_TXQ_SETUP(sc, i))
+ ath_tx_cleanupq(sc, &sc->tx.txq[i]);
+bad:
+ if (ah)
+ ath9k_hw_detach(ah);
+ ath9k_exit_debug(sc);
+
+ return error;
+}
+
+void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
+{
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+ IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
+ IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_AMPDU_AGGREGATION |
+ IEEE80211_HW_SUPPORTS_PS |
+ IEEE80211_HW_PS_NULLFUNC_STACK |
+ IEEE80211_HW_SPECTRUM_MGMT;
+
+ if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || modparam_nohwcrypt)
+ hw->flags |= IEEE80211_HW_MFP_CAPABLE;
+
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC) |
+ BIT(NL80211_IFTYPE_MESH_POINT);
+
+ hw->queues = 4;
+ hw->max_rates = 4;
+ hw->channel_change_time = 5000;
+ hw->max_listen_interval = 10;
+ hw->max_rate_tries = ATH_11N_TXMAXTRY;
+ hw->sta_data_size = sizeof(struct ath_node);
+ hw->vif_data_size = sizeof(struct ath_vif);
+
+ hw->rate_control_algorithm = "ath9k_rate_control";
+
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+ &sc->sbands[IEEE80211_BAND_2GHZ];
+ if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes))
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &sc->sbands[IEEE80211_BAND_5GHZ];
+}
+
+int ath_attach(u16 devid, struct ath_softc *sc)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ int error = 0, i;
+ struct ath_regulatory *reg;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n");
+
+ error = ath_init(devid, sc);
+ if (error != 0)
+ return error;
+
+ /* get mac address from hardware and set in mac80211 */
+
+ SET_IEEE80211_PERM_ADDR(hw, sc->sc_ah->macaddr);
+
+ ath_set_hw_capab(sc, hw);
+
+ error = ath_regd_init(&sc->sc_ah->regulatory, sc->hw->wiphy,
+ ath9k_reg_notifier);
+ if (error)
+ return error;
+
+ reg = &sc->sc_ah->regulatory;
+
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
+ setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
+ if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes))
+ setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
+ }
+
+ /* initialize tx/rx engine */
+ error = ath_tx_init(sc, ATH_TXBUF);
+ if (error != 0)
+ goto error_attach;
+
+ error = ath_rx_init(sc, ATH_RXBUF);
+ if (error != 0)
+ goto error_attach;
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+ /* Initialize s/w rfkill */
+ error = ath_init_sw_rfkill(sc);
+ if (error)
+ goto error_attach;
+#endif
+
+ INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work);
+ INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work);
+ sc->wiphy_scheduler_int = msecs_to_jiffies(500);
+
+ error = ieee80211_register_hw(hw);
+
+ if (!ath_is_world_regd(reg)) {
+ error = regulatory_hint(hw->wiphy, reg->alpha2);
+ if (error)
+ goto error_attach;
+ }
+
+ /* Initialize LED control */
+ ath_init_leds(sc);
+
+
+ return 0;
+
+error_attach:
+ /* cleanup tx queues */
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+ if (ATH_TXQ_SETUP(sc, i))
+ ath_tx_cleanupq(sc, &sc->tx.txq[i]);
+
+ ath9k_hw_detach(sc->sc_ah);
+ ath9k_exit_debug(sc);
+
+ return error;
+}
+
+int ath_reset(struct ath_softc *sc, bool retry_tx)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ieee80211_hw *hw = sc->hw;
+ int r;
+
+ ath9k_hw_set_interrupts(ah, 0);
+ ath_drain_all_txq(sc, retry_tx);
+ ath_stoprecv(sc);
+ ath_flushrecv(sc);
+
+ spin_lock_bh(&sc->sc_resetlock);
+ r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
+ if (r)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d\n", r);
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ if (ath_startrecv(sc) != 0)
+ DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n");
+
+ /*
+ * We may be doing a reset in response to a request
+ * that changes the channel so update any state that
+ * might change as a result.
+ */
+ ath_cache_conf_rate(sc, &hw->conf);
+
+ ath_update_txpow(sc);
+
+ if (sc->sc_flags & SC_OP_BEACONS)
+ ath_beacon_config(sc, NULL); /* restart beacons */
+
+ ath9k_hw_set_interrupts(ah, sc->imask);
+
+ if (retry_tx) {
+ int i;
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
+ if (ATH_TXQ_SETUP(sc, i)) {
+ spin_lock_bh(&sc->tx.txq[i].axq_lock);
+ ath_txq_schedule(sc, &sc->tx.txq[i]);
+ spin_unlock_bh(&sc->tx.txq[i].axq_lock);
+ }
+ }
+ }
+
+ return r;
+}
+
+/*
+ * This function will allocate both the DMA descriptor structure, and the
+ * buffers it contains. These are used to contain the descriptors used
+ * by the system.
+*/
+int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
+ struct list_head *head, const char *name,
+ int nbuf, int ndesc)
+{
+#define DS2PHYS(_dd, _ds) \
+ ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
+#define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
+#define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
+
+ struct ath_desc *ds;
+ struct ath_buf *bf;
+ int i, bsize, error;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
+ name, nbuf, ndesc);
+
+ INIT_LIST_HEAD(head);
+ /* ath_desc must be a multiple of DWORDs */
+ if ((sizeof(struct ath_desc) % 4) != 0) {
+ DPRINTF(sc, ATH_DBG_FATAL, "ath_desc not DWORD aligned\n");
+ ASSERT((sizeof(struct ath_desc) % 4) == 0);
+ error = -ENOMEM;
+ goto fail;
+ }
+
+ dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc;
+
+ /*
+ * Need additional DMA memory because we can't use
+ * descriptors that cross the 4K page boundary. Assume
+ * one skipped descriptor per 4K page.
+ */
+ if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
+ u32 ndesc_skipped =
+ ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
+ u32 dma_len;
+
+ while (ndesc_skipped) {
+ dma_len = ndesc_skipped * sizeof(struct ath_desc);
+ dd->dd_desc_len += dma_len;
+
+ ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
+ };
+ }
+
+ /* allocate descriptors */
+ dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
+ &dd->dd_desc_paddr, GFP_KERNEL);
+ if (dd->dd_desc == NULL) {
+ error = -ENOMEM;
+ goto fail;
+ }
+ ds = dd->dd_desc;
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
+ name, ds, (u32) dd->dd_desc_len,
+ ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
+
+ /* allocate buffers */
+ bsize = sizeof(struct ath_buf) * nbuf;
+ bf = kzalloc(bsize, GFP_KERNEL);
+ if (bf == NULL) {
+ error = -ENOMEM;
+ goto fail2;
+ }
+ dd->dd_bufptr = bf;
+
+ for (i = 0; i < nbuf; i++, bf++, ds += ndesc) {
+ bf->bf_desc = ds;
+ bf->bf_daddr = DS2PHYS(dd, ds);
+
+ if (!(sc->sc_ah->caps.hw_caps &
+ ATH9K_HW_CAP_4KB_SPLITTRANS)) {
+ /*
+ * Skip descriptor addresses which can cause 4KB
+ * boundary crossing (addr + length) with a 32 dword
+ * descriptor fetch.
+ */
+ while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
+ ASSERT((caddr_t) bf->bf_desc <
+ ((caddr_t) dd->dd_desc +
+ dd->dd_desc_len));
+
+ ds += ndesc;
+ bf->bf_desc = ds;
+ bf->bf_daddr = DS2PHYS(dd, ds);
+ }
+ }
+ list_add_tail(&bf->list, head);
+ }
+ return 0;
+fail2:
+ dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
+ dd->dd_desc_paddr);
+fail:
+ memset(dd, 0, sizeof(*dd));
+ return error;
+#undef ATH_DESC_4KB_BOUND_CHECK
+#undef ATH_DESC_4KB_BOUND_NUM_SKIPPED
+#undef DS2PHYS
+}
+
+void ath_descdma_cleanup(struct ath_softc *sc,
+ struct ath_descdma *dd,
+ struct list_head *head)
+{
+ dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
+ dd->dd_desc_paddr);
+
+ INIT_LIST_HEAD(head);
+ kfree(dd->dd_bufptr);
+ memset(dd, 0, sizeof(*dd));
+}
+
+int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
+{
+ int qnum;
+
+ switch (queue) {
+ case 0:
+ qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO];
+ break;
+ case 1:
+ qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI];
+ break;
+ case 2:
+ qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
+ break;
+ case 3:
+ qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK];
+ break;
+ default:
+ qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
+ break;
+ }
+
+ return qnum;
+}
+
+int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
+{
+ int qnum;
+
+ switch (queue) {
+ case ATH9K_WME_AC_VO:
+ qnum = 0;
+ break;
+ case ATH9K_WME_AC_VI:
+ qnum = 1;
+ break;
+ case ATH9K_WME_AC_BE:
+ qnum = 2;
+ break;
+ case ATH9K_WME_AC_BK:
+ qnum = 3;
+ break;
+ default:
+ qnum = -1;
+ break;
+ }
+
+ return qnum;
+}
+
+/* XXX: Remove me once we don't depend on ath9k_channel for all
+ * this redundant data */
+void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
+ struct ath9k_channel *ichan)
+{
+ 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 */
+/**********************/
+
+static int ath9k_start(struct ieee80211_hw *hw)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ struct ath9k_channel *init_channel;
+ int r, pos;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with "
+ "initial channel: %d MHz\n", curchan->center_freq);
+
+ mutex_lock(&sc->mutex);
+
+ if (ath9k_wiphy_started(sc)) {
+ if (sc->chan_idx == curchan->hw_value) {
+ /*
+ * Already on the operational channel, the new wiphy
+ * can be marked active.
+ */
+ aphy->state = ATH_WIPHY_ACTIVE;
+ ieee80211_wake_queues(hw);
+ } else {
+ /*
+ * Another wiphy is on another channel, start the new
+ * wiphy in paused state.
+ */
+ aphy->state = ATH_WIPHY_PAUSED;
+ ieee80211_stop_queues(hw);
+ }
+ mutex_unlock(&sc->mutex);
+ return 0;
+ }
+ aphy->state = ATH_WIPHY_ACTIVE;
+
+ /* setup initial channel */
+
+ pos = curchan->hw_value;
+
+ sc->chan_idx = pos;
+ init_channel = &sc->sc_ah->channels[pos];
+ ath9k_update_ichannel(sc, hw, init_channel);
+
+ /* Reset SERDES registers */
+ ath9k_hw_configpcipowersave(sc->sc_ah, 0);
+
+ /*
+ * The basic interface to setting the hardware in a good
+ * state is ``reset''. On return the hardware is known to
+ * be powered up and with interrupts disabled. This must
+ * be followed by initialization of the appropriate bits
+ * and then setup of the interrupt mask.
+ */
+ spin_lock_bh(&sc->sc_resetlock);
+ r = ath9k_hw_reset(sc->sc_ah, init_channel, false);
+ if (r) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+ "(freq %u MHz)\n", r,
+ curchan->center_freq);
+ spin_unlock_bh(&sc->sc_resetlock);
+ goto mutex_unlock;
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ /*
+ * This is needed only to setup initial state
+ * but it's best done after a reset.
+ */
+ ath_update_txpow(sc);
+
+ /*
+ * Setup the hardware after reset:
+ * The receive engine is set going.
+ * Frame transmit is handled entirely
+ * in the frame output path; there's nothing to do
+ * here except setup the interrupt mask.
+ */
+ if (ath_startrecv(sc) != 0) {
+ DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n");
+ r = -EIO;
+ goto mutex_unlock;
+ }
+
+ /* Setup our intr mask. */
+ sc->imask = ATH9K_INT_RX | ATH9K_INT_TX
+ | ATH9K_INT_RXEOL | ATH9K_INT_RXORN
+ | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL;
+
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_GTT)
+ sc->imask |= ATH9K_INT_GTT;
+
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
+ sc->imask |= ATH9K_INT_CST;
+
+ ath_cache_conf_rate(sc, &hw->conf);
+
+ sc->sc_flags &= ~SC_OP_INVALID;
+
+ /* Disable BMISS interrupt when we're not associated */
+ sc->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
+
+ ieee80211_wake_queues(hw);
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+ r = ath_start_rfkill_poll(sc);
+#endif
+
+mutex_unlock:
+ mutex_unlock(&sc->mutex);
+
+ return r;
+}
+
+static int ath9k_tx(struct ieee80211_hw *hw,
+ struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_tx_control txctl;
+ int hdrlen, padsize;
+
+ if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
+ printk(KERN_DEBUG "ath9k: %s: TX in unexpected wiphy state "
+ "%d\n", wiphy_name(hw->wiphy), aphy->state);
+ goto exit;
+ }
+
+ if (sc->hw->conf.flags & IEEE80211_CONF_PS) {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ /*
+ * mac80211 does not set PM field for normal data frames, so we
+ * need to update that based on the current PS mode.
+ */
+ if (ieee80211_is_data(hdr->frame_control) &&
+ !ieee80211_is_nullfunc(hdr->frame_control) &&
+ !ieee80211_has_pm(hdr->frame_control)) {
+ DPRINTF(sc, ATH_DBG_PS, "Add PM=1 for a TX frame "
+ "while in PS mode\n");
+ hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
+ }
+ }
+
+ if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
+ /*
+ * We are using PS-Poll and mac80211 can request TX while in
+ * power save mode. Need to wake up hardware for the TX to be
+ * completed and if needed, also for RX of buffered frames.
+ */
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ ath9k_ps_wakeup(sc);
+ ath9k_hw_setrxabort(sc->sc_ah, 0);
+ if (ieee80211_is_pspoll(hdr->frame_control)) {
+ DPRINTF(sc, ATH_DBG_PS, "Sending PS-Poll to pick a "
+ "buffered frame\n");
+ sc->sc_flags |= SC_OP_WAIT_FOR_PSPOLL_DATA;
+ } else {
+ DPRINTF(sc, ATH_DBG_PS, "Wake up to complete TX\n");
+ sc->sc_flags |= SC_OP_WAIT_FOR_TX_ACK;
+ }
+ /*
+ * The actual restore operation will happen only after
+ * the sc_flags bit is cleared. We are just dropping
+ * the ps_usecount here.
+ */
+ ath9k_ps_restore(sc);
+ }
+
+ memset(&txctl, 0, sizeof(struct ath_tx_control));
+
+ /*
+ * As a temporary workaround, assign seq# here; this will likely need
+ * to be cleaned up to work better with Beacon transmission and virtual
+ * BSSes.
+ */
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+ sc->tx.seq_no += 0x10;
+ hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
+ }
+
+ /* Add the padding after the header if this is not already done */
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ if (hdrlen & 3) {
+ padsize = hdrlen % 4;
+ if (skb_headroom(skb) < padsize)
+ return -1;
+ skb_push(skb, padsize);
+ memmove(skb->data, skb->data + padsize, hdrlen);
+ }
+
+ /* Check if a tx queue is available */
+
+ txctl.txq = ath_test_get_txq(sc, skb);
+ if (!txctl.txq)
+ goto exit;
+
+ DPRINTF(sc, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
+
+ if (ath_tx_start(hw, skb, &txctl) != 0) {
+ DPRINTF(sc, ATH_DBG_XMIT, "TX failed\n");
+ goto exit;
+ }
+
+ return 0;
+exit:
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+static void ath9k_stop(struct ieee80211_hw *hw)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ aphy->state = ATH_WIPHY_INACTIVE;
+
+ if (sc->sc_flags & SC_OP_INVALID) {
+ DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
+ return;
+ }
+
+ mutex_lock(&sc->mutex);
+
+ ieee80211_stop_queues(hw);
+
+ if (ath9k_wiphy_started(sc)) {
+ mutex_unlock(&sc->mutex);
+ return; /* another wiphy still in use */
+ }
+
+ /* make sure h/w will not generate any interrupt
+ * before setting the invalid flag. */
+ ath9k_hw_set_interrupts(sc->sc_ah, 0);
+
+ if (!(sc->sc_flags & SC_OP_INVALID)) {
+ ath_drain_all_txq(sc, false);
+ ath_stoprecv(sc);
+ ath9k_hw_phy_disable(sc->sc_ah);
+ } else
+ sc->rx.rxlink = NULL;
+
+ rfkill_pause_polling(sc->rf_kill.rfkill);
+
+ /* disable HAL and put h/w to sleep */
+ ath9k_hw_disable(sc->sc_ah);
+ ath9k_hw_configpcipowersave(sc->sc_ah, 1);
+
+ sc->sc_flags |= SC_OP_INVALID;
+
+ mutex_unlock(&sc->mutex);
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Driver halt\n");
+}
+
+static int ath9k_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_vif *avp = (void *)conf->vif->drv_priv;
+ enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
+ int ret = 0;
+
+ mutex_lock(&sc->mutex);
+
+ if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) &&
+ sc->nvifs > 0) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+
+ switch (conf->type) {
+ case NL80211_IFTYPE_STATION:
+ ic_opmode = NL80211_IFTYPE_STATION;
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ if (sc->nbcnvifs >= ATH_BCBUF) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+ ic_opmode = conf->type;
+ break;
+ default:
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Interface type %d not yet supported\n", conf->type);
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VIF of type: %d\n", ic_opmode);
+
+ /* Set the VIF opmode */
+ avp->av_opmode = ic_opmode;
+ avp->av_bslot = -1;
+
+ sc->nvifs++;
+
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
+ ath9k_set_bssid_mask(hw);
+
+ if (sc->nvifs > 1)
+ goto out; /* skip global settings for secondary vif */
+
+ if (ic_opmode == NL80211_IFTYPE_AP) {
+ ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
+ sc->sc_flags |= SC_OP_TSF_RESET;
+ }
+
+ /* Set the device opmode */
+ sc->sc_ah->opmode = ic_opmode;
+
+ /*
+ * Enable MIB interrupts when there are hardware phy counters.
+ * Note we only do this (at the moment) for station mode.
+ */
+ if ((conf->type == NL80211_IFTYPE_STATION) ||
+ (conf->type == NL80211_IFTYPE_ADHOC) ||
+ (conf->type == NL80211_IFTYPE_MESH_POINT)) {
+ if (ath9k_hw_phycounters(sc->sc_ah))
+ sc->imask |= ATH9K_INT_MIB;
+ sc->imask |= ATH9K_INT_TSFOOR;
+ }
+
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
+
+ if (conf->type == NL80211_IFTYPE_AP)
+ ath_start_ani(sc);
+
+out:
+ mutex_unlock(&sc->mutex);
+ return ret;
+}
+
+static void ath9k_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_vif *avp = (void *)conf->vif->drv_priv;
+ int i;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n");
+
+ mutex_lock(&sc->mutex);
+
+ /* Stop ANI */
+ del_timer_sync(&sc->ani.timer);
+
+ /* Reclaim beacon resources */
+ if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
+ (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
+ (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+ ath_beacon_return(sc, avp);
+ }
+
+ sc->sc_flags &= ~SC_OP_BEACONS;
+
+ for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
+ if (sc->beacon.bslot[i] == conf->vif) {
+ printk(KERN_DEBUG "%s: vif had allocated beacon "
+ "slot\n", __func__);
+ sc->beacon.bslot[i] = NULL;
+ sc->beacon.bslot_aphy[i] = NULL;
+ }
+ }
+
+ sc->nvifs--;
+
+ mutex_unlock(&sc->mutex);
+}
+
+static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ieee80211_conf *conf = &hw->conf;
+ struct ath_hw *ah = sc->sc_ah;
+
+ mutex_lock(&sc->mutex);
+
+ if (changed & IEEE80211_CONF_CHANGE_PS) {
+ if (conf->flags & IEEE80211_CONF_PS) {
+ if (!(ah->caps.hw_caps &
+ ATH9K_HW_CAP_AUTOSLEEP)) {
+ if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
+ sc->imask |= ATH9K_INT_TIM_TIMER;
+ ath9k_hw_set_interrupts(sc->sc_ah,
+ sc->imask);
+ }
+ ath9k_hw_setrxabort(sc->sc_ah, 1);
+ }
+ ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
+ } else {
+ ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
+ if (!(ah->caps.hw_caps &
+ ATH9K_HW_CAP_AUTOSLEEP)) {
+ ath9k_hw_setrxabort(sc->sc_ah, 0);
+ sc->sc_flags &= ~(SC_OP_WAIT_FOR_BEACON |
+ SC_OP_WAIT_FOR_CAB |
+ SC_OP_WAIT_FOR_PSPOLL_DATA |
+ SC_OP_WAIT_FOR_TX_ACK);
+ if (sc->imask & ATH9K_INT_TIM_TIMER) {
+ sc->imask &= ~ATH9K_INT_TIM_TIMER;
+ ath9k_hw_set_interrupts(sc->sc_ah,
+ sc->imask);
+ }
+ }
+ }
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ int pos = curchan->hw_value;
+
+ aphy->chan_idx = pos;
+ aphy->chan_is_ht = conf_is_ht(conf);
+
+ if (aphy->state == ATH_WIPHY_SCAN ||
+ aphy->state == ATH_WIPHY_ACTIVE)
+ ath9k_wiphy_pause_all_forced(sc, aphy);
+ else {
+ /*
+ * Do not change operational channel based on a paused
+ * wiphy changes.
+ */
+ goto skip_chan_change;
+ }
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
+ curchan->center_freq);
+
+ /* XXX: remove me eventualy */
+ ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
+
+ ath_update_chainmask(sc, conf_is_ht(conf));
+
+ if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
+ DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n");
+ mutex_unlock(&sc->mutex);
+ return -EINVAL;
+ }
+ }
+
+skip_chan_change:
+ if (changed & IEEE80211_CONF_CHANGE_POWER)
+ sc->config.txpowlimit = 2 * conf->power_level;
+
+ mutex_unlock(&sc->mutex);
+
+ return 0;
+}
+
+#define SUPPORTED_FILTERS \
+ (FIF_PROMISC_IN_BSS | \
+ FIF_ALLMULTI | \
+ FIF_CONTROL | \
+ FIF_OTHER_BSS | \
+ FIF_BCN_PRBRESP_PROMISC | \
+ FIF_FCSFAIL)
+
+/* FIXME: sc->sc_full_reset ? */
+static void ath9k_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ int mc_count,
+ struct dev_mc_list *mclist)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ u32 rfilt;
+
+ changed_flags &= SUPPORTED_FILTERS;
+ *total_flags &= SUPPORTED_FILTERS;
+
+ sc->rx.rxfilter = *total_flags;
+ ath9k_ps_wakeup(sc);
+ rfilt = ath_calcrxfilter(sc);
+ ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
+ ath9k_ps_restore(sc);
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Set HW RX filter: 0x%x\n", sc->rx.rxfilter);
+}
+
+static void ath9k_sta_notify(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd,
+ struct ieee80211_sta *sta)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ switch (cmd) {
+ case STA_NOTIFY_ADD:
+ ath_node_attach(sc, sta);
+ break;
+ case STA_NOTIFY_REMOVE:
+ ath_node_detach(sc, sta);
+ break;
+ default:
+ break;
+ }
+}
+
+static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath9k_tx_queue_info qi;
+ int ret = 0, qnum;
+
+ if (queue >= WME_NUM_AC)
+ return 0;
+
+ mutex_lock(&sc->mutex);
+
+ memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
+
+ qi.tqi_aifs = params->aifs;
+ qi.tqi_cwmin = params->cw_min;
+ qi.tqi_cwmax = params->cw_max;
+ qi.tqi_burstTime = params->txop;
+ qnum = ath_get_hal_qnum(queue, sc);
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "Configure tx [queue/halq] [%d/%d], "
+ "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
+ queue, qnum, params->aifs, params->cw_min,
+ params->cw_max, params->txop);
+
+ ret = ath_txq_update(sc, qnum, &qi);
+ if (ret)
+ DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n");
+
+ mutex_unlock(&sc->mutex);
+
+ return ret;
+}
+
+static int ath9k_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ int ret = 0;
+
+ if (modparam_nohwcrypt)
+ return -ENOSPC;
+
+ mutex_lock(&sc->mutex);
+ ath9k_ps_wakeup(sc);
+ DPRINTF(sc, ATH_DBG_CONFIG, "Set HW Key\n");
+
+ switch (cmd) {
+ case SET_KEY:
+ ret = ath_key_config(sc, vif, sta, key);
+ if (ret >= 0) {
+ key->hw_key_idx = ret;
+ /* push IV and Michael MIC generation to stack */
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ if (key->alg == ALG_TKIP)
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+ if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
+ key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
+ ret = 0;
+ }
+ break;
+ case DISABLE_KEY:
+ ath_key_delete(sc, key);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ ath9k_ps_restore(sc);
+ mutex_unlock(&sc->mutex);
+
+ return ret;
+}
+
+static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_vif *avp = (void *)vif->drv_priv;
+ u32 rfilt = 0;
+ int error, i;
+
+ mutex_lock(&sc->mutex);
+
+ /*
+ * TODO: Need to decide which hw opmode to use for
+ * multi-interface cases
+ * XXX: This belongs into add_interface!
+ */
+ if (vif->type == NL80211_IFTYPE_AP &&
+ ah->opmode != NL80211_IFTYPE_AP) {
+ ah->opmode = NL80211_IFTYPE_STATION;
+ ath9k_hw_setopmode(ah);
+ memcpy(sc->curbssid, sc->sc_ah->macaddr, ETH_ALEN);
+ sc->curaid = 0;
+ ath9k_hw_write_associd(sc);
+ /* Request full reset to get hw opmode changed properly */
+ sc->sc_flags |= SC_OP_FULL_RESET;
+ }
+
+ if ((changed & BSS_CHANGED_BSSID) &&
+ !is_zero_ether_addr(bss_conf->bssid)) {
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_MESH_POINT:
+ /* Set BSSID */
+ memcpy(sc->curbssid, bss_conf->bssid, ETH_ALEN);
+ memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
+ sc->curaid = 0;
+ ath9k_hw_write_associd(sc);
+
+ /* Set aggregation protection mode parameters */
+ sc->config.ath_aggr_prot = 0;
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "RX filter 0x%x bssid %pM aid 0x%x\n",
+ rfilt, sc->curbssid, sc->curaid);
+
+ /* need to reconfigure the beacon */
+ sc->sc_flags &= ~SC_OP_BEACONS ;
+
+ break;
+ default:
+ break;
+ }
+ }
+
+ if ((vif->type == NL80211_IFTYPE_ADHOC) ||
+ (vif->type == NL80211_IFTYPE_AP) ||
+ (vif->type == NL80211_IFTYPE_MESH_POINT)) {
+ if ((changed & BSS_CHANGED_BEACON) ||
+ (changed & BSS_CHANGED_BEACON_ENABLED &&
+ bss_conf->enable_beacon)) {
+ /*
+ * Allocate and setup the beacon frame.
+ *
+ * Stop any previous beacon DMA. This may be
+ * necessary, for example, when an ibss merge
+ * causes reconfiguration; we may be called
+ * with beacon transmission active.
+ */
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+
+ error = ath_beacon_alloc(aphy, vif);
+ if (!error)
+ ath_beacon_config(sc, vif);
+ }
+ }
+
+ /* Check for WLAN_CAPABILITY_PRIVACY ? */
+ if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
+ for (i = 0; i < IEEE80211_WEP_NKID; i++)
+ if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
+ ath9k_hw_keysetmac(sc->sc_ah,
+ (u16)i,
+ sc->curbssid);
+ }
+
+ /* Only legacy IBSS for now */
+ if (vif->type == NL80211_IFTYPE_ADHOC)
+ ath_update_chainmask(sc, 0);
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
+ bss_conf->use_short_preamble);
+ if (bss_conf->use_short_preamble)
+ sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
+ else
+ sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
+ }
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
+ bss_conf->use_cts_prot);
+ if (bss_conf->use_cts_prot &&
+ hw->conf.channel->band != IEEE80211_BAND_5GHZ)
+ sc->sc_flags |= SC_OP_PROTECT_ENABLE;
+ else
+ sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
+ }
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
+ bss_conf->assoc);
+ ath9k_bss_assoc_info(sc, vif, bss_conf);
+ }
+
+ /*
+ * The HW TSF has to be reset when the beacon interval changes.
+ * We set the flag here, and ath_beacon_config_ap() would take this
+ * into account when it gets called through the subsequent
+ * config_interface() call - with IFCC_BEACON in the changed field.
+ */
+
+ if (changed & BSS_CHANGED_BEACON_INT) {
+ sc->sc_flags |= SC_OP_TSF_RESET;
+ sc->beacon_interval = bss_conf->beacon_int;
+ }
+
+ mutex_unlock(&sc->mutex);
+}
+
+static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
+{
+ u64 tsf;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ mutex_lock(&sc->mutex);
+ tsf = ath9k_hw_gettsf64(sc->sc_ah);
+ mutex_unlock(&sc->mutex);
+
+ return tsf;
+}
+
+static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ mutex_lock(&sc->mutex);
+ ath9k_hw_settsf64(sc->sc_ah, tsf);
+ mutex_unlock(&sc->mutex);
+}
+
+static void ath9k_reset_tsf(struct ieee80211_hw *hw)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ mutex_lock(&sc->mutex);
+ ath9k_hw_reset_tsf(sc->sc_ah);
+ mutex_unlock(&sc->mutex);
+}
+
+static int ath9k_ampdu_action(struct ieee80211_hw *hw,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta,
+ u16 tid, u16 *ssn)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ int ret = 0;
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ if (!(sc->sc_flags & SC_OP_RXAGGR))
+ ret = -ENOTSUPP;
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ ret = ath_tx_aggr_start(sc, sta, tid, ssn);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to start TX aggregation\n");
+ else
+ ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_STOP:
+ ret = ath_tx_aggr_stop(sc, sta, tid);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to stop TX aggregation\n");
+
+ ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ ath_tx_aggr_resume(sc, sta, tid);
+ break;
+ default:
+ DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n");
+ }
+
+ return ret;
+}
+
+static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ if (ath9k_wiphy_scanning(sc)) {
+ printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the "
+ "same time\n");
+ /*
+ * Do not allow the concurrent scanning state for now. This
+ * could be improved with scanning control moved into ath9k.
+ */
+ return;
+ }
+
+ aphy->state = ATH_WIPHY_SCAN;
+ ath9k_wiphy_pause_all_forced(sc, aphy);
+
+ mutex_lock(&sc->mutex);
+ sc->sc_flags |= SC_OP_SCANNING;
+ mutex_unlock(&sc->mutex);
+}
+
+static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+
+ mutex_lock(&sc->mutex);
+ aphy->state = ATH_WIPHY_ACTIVE;
+ sc->sc_flags &= ~SC_OP_SCANNING;
+ sc->sc_flags |= SC_OP_FULL_RESET;
+ mutex_unlock(&sc->mutex);
+}
+
+struct ieee80211_ops ath9k_ops = {
+ .tx = ath9k_tx,
+ .start = ath9k_start,
+ .stop = ath9k_stop,
+ .add_interface = ath9k_add_interface,
+ .remove_interface = ath9k_remove_interface,
+ .config = ath9k_config,
+ .configure_filter = ath9k_configure_filter,
+ .sta_notify = ath9k_sta_notify,
+ .conf_tx = ath9k_conf_tx,
+ .bss_info_changed = ath9k_bss_info_changed,
+ .set_key = ath9k_set_key,
+ .get_tsf = ath9k_get_tsf,
+ .set_tsf = ath9k_set_tsf,
+ .reset_tsf = ath9k_reset_tsf,
+ .ampdu_action = ath9k_ampdu_action,
+ .sw_scan_start = ath9k_sw_scan_start,
+ .sw_scan_complete = ath9k_sw_scan_complete,
+};
+
+static struct {
+ u32 version;
+ const char * name;
+} ath_mac_bb_names[] = {
+ { AR_SREV_VERSION_5416_PCI, "5416" },
+ { AR_SREV_VERSION_5416_PCIE, "5418" },
+ { AR_SREV_VERSION_9100, "9100" },
+ { AR_SREV_VERSION_9160, "9160" },
+ { AR_SREV_VERSION_9280, "9280" },
+ { AR_SREV_VERSION_9285, "9285" }
+};
+
+static struct {
+ u16 version;
+ const char * name;
+} ath_rf_names[] = {
+ { 0, "5133" },
+ { AR_RAD5133_SREV_MAJOR, "5133" },
+ { AR_RAD5122_SREV_MAJOR, "5122" },
+ { AR_RAD2133_SREV_MAJOR, "2133" },
+ { AR_RAD2122_SREV_MAJOR, "2122" }
+};
+
+/*
+ * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
+ */
+const char *
+ath_mac_bb_name(u32 mac_bb_version)
+{
+ int i;
+
+ for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
+ if (ath_mac_bb_names[i].version == mac_bb_version) {
+ return ath_mac_bb_names[i].name;
+ }
+ }
+
+ return "????";
+}
+
+/*
+ * Return the RF name. "????" is returned if the RF is unknown.
+ */
+const char *
+ath_rf_name(u16 rf_version)
+{
+ int i;
+
+ for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
+ if (ath_rf_names[i].version == rf_version) {
+ return ath_rf_names[i].name;
+ }
+ }
+
+ return "????";
+}
+
+static int __init ath9k_init(void)
+{
+ int error;
+
+ /* Register rate control algorithm */
+ error = ath_rate_control_register();
+ if (error != 0) {
+ printk(KERN_ERR
+ "ath9k: Unable to register rate control "
+ "algorithm: %d\n",
+ error);
+ goto err_out;
+ }
+
+ error = ath9k_debug_create_root();
+ if (error) {
+ printk(KERN_ERR
+ "ath9k: Unable to create debugfs root: %d\n",
+ error);
+ goto err_rate_unregister;
+ }
+
+ error = ath_pci_init();
+ if (error < 0) {
+ printk(KERN_ERR
+ "ath9k: No PCI devices found, driver not installed.\n");
+ error = -ENODEV;
+ goto err_remove_root;
+ }
+
+ error = ath_ahb_init();
+ if (error < 0) {
+ error = -ENODEV;
+ goto err_pci_exit;
+ }
+
+ return 0;
+
+ err_pci_exit:
+ ath_pci_exit();
+
+ err_remove_root:
+ ath9k_debug_remove_root();
+ err_rate_unregister:
+ ath_rate_control_unregister();
+ err_out:
+ return error;
+}
+module_init(ath9k_init);
+
+static void __exit ath9k_exit(void)
+{
+ ath_ahb_exit();
+ ath_pci_exit();
+ ath9k_debug_remove_root();
+ ath_rate_control_unregister();
+ printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
+}
+module_exit(ath9k_exit);