* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-/* mac80211 and PCI callbacks */
-
#include <linux/nl80211.h>
#include "core.h"
+#include "reg.h"
+#include "hw.h"
#define ATH_PCI_VERSION "0.1"
-#define IEEE80211_HTCAP_MAXRXAMPDU_FACTOR 13
-
static char *dev_info = "ath9k";
MODULE_AUTHOR("Atheros Communications");
{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
+ { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
{ 0 }
};
-static int ath_get_channel(struct ath_softc *sc,
- struct ieee80211_channel *chan)
+static void ath_detach(struct ath_softc *sc);
+
+/* return bus cachesize in 4B word units */
+
+static void bus_read_cachesize(struct ath_softc *sc, int *csz)
{
- int i;
+ u8 u8tmp;
- for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
- if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
- return i;
- }
+ pci_read_config_byte(sc->pdev, PCI_CACHE_LINE_SIZE, (u8 *)&u8tmp);
+ *csz = (int)u8tmp;
- return -1;
+ /*
+ * This check was put in to avoid "unplesant" consequences if
+ * the bootrom has not fully initialized all PCI devices.
+ * Sometimes the cache line size register is not set
+ */
+
+ if (*csz == 0)
+ *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */
}
-static u32 ath_get_extchanmode(struct ath_softc *sc,
- struct ieee80211_channel *chan)
+static void ath_cache_conf_rate(struct ath_softc *sc,
+ struct ieee80211_conf *conf)
{
- u32 chanmode = 0;
- u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
- enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;
-
- switch (chan->band) {
+ switch (conf->channel->band) {
case IEEE80211_BAND_2GHZ:
- if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
- (tx_chan_width == ATH9K_HT_MACMODE_20))
- chanmode = CHANNEL_G_HT20;
- if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
- (tx_chan_width == ATH9K_HT_MACMODE_2040))
- chanmode = CHANNEL_G_HT40PLUS;
- if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
- (tx_chan_width == ATH9K_HT_MACMODE_2040))
- chanmode = CHANNEL_G_HT40MINUS;
+ 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 ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
- (tx_chan_width == ATH9K_HT_MACMODE_20))
- chanmode = CHANNEL_A_HT20;
- if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
- (tx_chan_width == ATH9K_HT_MACMODE_2040))
- chanmode = CHANNEL_A_HT40PLUS;
- if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
- (tx_chan_width == ATH9K_HT_MACMODE_2040))
- chanmode = CHANNEL_A_HT40MINUS;
+ 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;
}
-
- return chanmode;
}
-
-static int ath_setkey_tkip(struct ath_softc *sc,
- struct ieee80211_key_conf *key,
- struct ath9k_keyval *hk,
- const u8 *addr)
+static void ath_update_txpow(struct ath_softc *sc)
{
- u8 *key_rxmic = NULL;
- u8 *key_txmic = NULL;
-
- key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
- key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
+ struct ath_hal *ah = sc->sc_ah;
+ u32 txpow;
- if (addr == NULL) {
- /* Group key installation */
- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
- return ath_keyset(sc, key->keyidx, hk, addr);
- }
- if (!sc->sc_splitmic) {
- /*
- * data key goes at first index,
- * the hal handles the MIC keys at index+64.
- */
- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
- memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
- return ath_keyset(sc, key->keyidx, hk, addr);
+ if (sc->sc_curtxpow != sc->sc_config.txpowlimit) {
+ ath9k_hw_set_txpowerlimit(ah, sc->sc_config.txpowlimit);
+ /* read back in case value is clamped */
+ ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
+ sc->sc_curtxpow = txpow;
}
+}
+
+static u8 parse_mpdudensity(u8 mpdudensity)
+{
/*
- * TX key goes at first index, RX key at +32.
- * The hal handles the MIC keys at index+64.
+ * 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
*/
- memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
- if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
- /* Txmic entry failed. No need to proceed further */
- DPRINTF(sc, ATH_DBG_KEYCACHE,
- "%s Setting TX MIC Key Failed\n", __func__);
+ 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;
}
-
- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
- /* XXX delete tx key on failure? */
- return ath_keyset(sc, key->keyidx+32, hk, addr);
}
-static int ath_key_config(struct ath_softc *sc,
- const u8 *addr,
- struct ieee80211_key_conf *key)
+static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band)
{
- struct ieee80211_vif *vif;
- struct ath9k_keyval hk;
- const u8 *mac = NULL;
- int ret = 0;
- enum nl80211_iftype opmode;
+ struct ath_rate_table *rate_table = NULL;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate;
+ int i, maxrates;
- 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;
+ switch (band) {
+ case IEEE80211_BAND_2GHZ:
+ rate_table = sc->hw_rate_table[ATH9K_MODE_11G];
break;
- case ALG_CCMP:
- hk.kv_type = ATH9K_CIPHER_AES_CCM;
+ case IEEE80211_BAND_5GHZ:
+ rate_table = sc->hw_rate_table[ATH9K_MODE_11A];
break;
default:
- return -EINVAL;
+ break;
}
- hk.kv_len = key->keylen;
- memcpy(hk.kv_val, key->key, key->keylen);
-
- if (!sc->sc_vaps[0])
- return -EIO;
+ if (rate_table == NULL)
+ return;
- vif = sc->sc_vaps[0]->av_if_data;
- opmode = vif->type;
+ sband = &sc->sbands[band];
+ rate = sc->rates[band];
- /*
- * Strategy:
- * For _M_STA mc tx, we will not setup a key at all since we never
- * tx mc.
- * _M_STA mc rx, we will use the keyID.
- * for _M_IBSS mc tx, we will use the keyID, and no macaddr.
- * for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
- * peer node. BUT we will plumb a cleartext key so that we can do
- * perSta default key table lookup in software.
- */
- if (is_broadcast_ether_addr(addr)) {
- switch (opmode) {
- case NL80211_IFTYPE_STATION:
- /* default key: could be group WPA key
- * or could be static WEP key */
- mac = NULL;
- break;
- case NL80211_IFTYPE_ADHOC:
- break;
- case NL80211_IFTYPE_AP:
- break;
- default:
- ASSERT(0);
- break;
- }
- } else {
- mac = addr;
+ 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;
+ sband->n_bitrates++;
+ DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n",
+ rate[i].bitrate / 10, rate[i].hw_value);
}
+}
- if (key->alg == ALG_TKIP)
- ret = ath_setkey_tkip(sc, key, &hk, mac);
- else
- ret = ath_keyset(sc, key->keyidx, &hk, mac);
+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;
+ }
- if (!ret)
- return -EIO;
+ 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;
}
-static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
+/*
+ * 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.
+*/
+static int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan)
{
- int freeslot;
+ struct ath_hal *ah = sc->sc_ah;
+ bool fastcc = true, stopped;
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_channel *channel = hw->conf.channel;
+ int r;
- freeslot = (key->keyidx >= 4) ? 1 : 0;
- ath_key_reset(sc, key->keyidx, freeslot);
-}
+ if (sc->sc_flags & SC_OP_INVALID)
+ return -EIO;
-static void setup_ht_cap(struct ieee80211_ht_info *ht_info)
-{
-#define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
-#define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
+ if (hchan->channel != sc->sc_ah->ah_curchan->channel ||
+ hchan->channelFlags != sc->sc_ah->ah_curchan->channelFlags ||
+ (sc->sc_flags & SC_OP_CHAINMASK_UPDATE) ||
+ (sc->sc_flags & SC_OP_FULL_RESET)) {
+ /*
+ * 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_draintxq(sc, false);
+ stopped = ath_stoprecv(sc);
- ht_info->ht_supported = 1;
- ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
- |(u16)IEEE80211_HT_CAP_SM_PS
- |(u16)IEEE80211_HT_CAP_SGI_40
- |(u16)IEEE80211_HT_CAP_DSSSCCK40;
+ /* XXX: do not flush receive queue here. We don't want
+ * to flush data frames already in queue because of
+ * changing channel. */
- ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
- ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
- /* setup supported mcs set */
- memset(ht_info->supp_mcs_set, 0, 16);
- ht_info->supp_mcs_set[0] = 0xff;
- ht_info->supp_mcs_set[1] = 0xff;
- ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
+ 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->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 %u\n",
+ channel->center_freq, r);
+ spin_unlock_bh(&sc->sc_resetlock);
+ return r;
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+ sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE;
+ 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->sc_imask);
+ }
+ return 0;
}
-static int ath_rate2idx(struct ath_softc *sc, int rate)
+/*
+ * 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)
{
- int i = 0, cur_band, n_rates;
- struct ieee80211_hw *hw = sc->hw;
+ struct ath_softc *sc;
+ struct ath_hal *ah;
+ bool longcal = false;
+ bool shortcal = false;
+ bool aniflag = false;
+ unsigned int timestamp = jiffies_to_msecs(jiffies);
+ u32 cal_interval;
- cur_band = hw->conf.channel->band;
- n_rates = sc->sbands[cur_band].n_bitrates;
+ sc = (struct ath_softc *)data;
+ ah = sc->sc_ah;
- for (i = 0; i < n_rates; i++) {
- if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
- break;
+ /*
+ * don't calibrate when we're scanning.
+ * we are most likely not on our home channel.
+ */
+ if (sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC)
+ return;
+
+ /* Long calibration runs independently of short calibration. */
+ if ((timestamp - sc->sc_ani.sc_longcal_timer) >= ATH_LONG_CALINTERVAL) {
+ longcal = true;
+ DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
+ sc->sc_ani.sc_longcal_timer = timestamp;
+ }
+
+ /* Short calibration applies only while sc_caldone is false */
+ if (!sc->sc_ani.sc_caldone) {
+ if ((timestamp - sc->sc_ani.sc_shortcal_timer) >=
+ ATH_SHORT_CALINTERVAL) {
+ shortcal = true;
+ DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies);
+ sc->sc_ani.sc_shortcal_timer = timestamp;
+ sc->sc_ani.sc_resetcal_timer = timestamp;
+ }
+ } else {
+ if ((timestamp - sc->sc_ani.sc_resetcal_timer) >=
+ ATH_RESTART_CALINTERVAL) {
+ sc->sc_ani.sc_caldone = ath9k_hw_reset_calvalid(ah);
+ if (sc->sc_ani.sc_caldone)
+ sc->sc_ani.sc_resetcal_timer = timestamp;
+ }
+ }
+
+ /* Verify whether we must check ANI */
+ if ((timestamp - sc->sc_ani.sc_checkani_timer) >=
+ ATH_ANI_POLLINTERVAL) {
+ aniflag = true;
+ sc->sc_ani.sc_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->sc_halstats,
+ ah->ah_curchan);
+
+ /* Perform calibration if necessary */
+ if (longcal || shortcal) {
+ bool iscaldone = false;
+
+ if (ath9k_hw_calibrate(ah, ah->ah_curchan,
+ sc->sc_rx_chainmask, longcal,
+ &iscaldone)) {
+ if (longcal)
+ sc->sc_ani.sc_noise_floor =
+ ath9k_hw_getchan_noise(ah,
+ ah->ah_curchan);
+
+ DPRINTF(sc, ATH_DBG_ANI,
+ "calibrate chan %u/%x nf: %d\n",
+ ah->ah_curchan->channel,
+ ah->ah_curchan->channelFlags,
+ sc->sc_ani.sc_noise_floor);
+ } else {
+ DPRINTF(sc, ATH_DBG_ANY,
+ "calibrate chan %u/%x failed\n",
+ ah->ah_curchan->channel,
+ ah->ah_curchan->channelFlags);
+ }
+ sc->sc_ani.sc_caldone = iscaldone;
+ }
}
/*
- * NB:mac80211 validates rx rate index against the supported legacy rate
- * index only (should be done against ht rates also), return the highest
- * legacy rate index for rx rate which does not match any one of the
- * supported basic and extended rates to make mac80211 happy.
- * The following hack will be cleaned up once the issue with
- * the rx rate index validation in mac80211 is fixed.
- */
- if (i == n_rates)
- return n_rates - 1;
- return i;
+ * 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->ah_config.enable_ani)
+ cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
+ if (!sc->sc_ani.sc_caldone)
+ cal_interval = min(cal_interval, (u32)ATH_SHORT_CALINTERVAL);
+
+ mod_timer(&sc->sc_ani.timer, jiffies + msecs_to_jiffies(cal_interval));
}
-static void ath9k_rx_prepare(struct ath_softc *sc,
- struct sk_buff *skb,
- struct ath_recv_status *status,
- struct ieee80211_rx_status *rx_status)
+/*
+ * Update tx/rx chainmask. For legacy association,
+ * hard code chainmask to 1x1, for 11n association, use
+ * the chainmask configuration.
+ */
+static void ath_update_chainmask(struct ath_softc *sc, int is_ht)
{
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_channel *curchan = hw->conf.channel;
+ sc->sc_flags |= SC_OP_CHAINMASK_UPDATE;
+ if (is_ht) {
+ sc->sc_tx_chainmask = sc->sc_ah->ah_caps.tx_chainmask;
+ sc->sc_rx_chainmask = sc->sc_ah->ah_caps.rx_chainmask;
+ } else {
+ sc->sc_tx_chainmask = 1;
+ sc->sc_rx_chainmask = 1;
+ }
- memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
+ DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n",
+ sc->sc_tx_chainmask, sc->sc_rx_chainmask);
+}
- rx_status->mactime = status->tsf;
- rx_status->band = curchan->band;
- rx_status->freq = curchan->center_freq;
- rx_status->noise = sc->sc_ani.sc_noise_floor;
- rx_status->signal = rx_status->noise + status->rssi;
- rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
- rx_status->antenna = status->antenna;
+static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
+{
+ struct ath_node *an;
- /* XXX Fix me, 64 cannot be the max rssi value, rigure it out */
- rx_status->qual = status->rssi * 100 / 64;
+ an = (struct ath_node *)sta->drv_priv;
- if (status->flags & ATH_RX_MIC_ERROR)
- rx_status->flag |= RX_FLAG_MMIC_ERROR;
- if (status->flags & ATH_RX_FCS_ERROR)
- rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+ if (sc->sc_flags & SC_OP_TXAGGR)
+ ath_tx_node_init(sc, an);
- rx_status->flag |= RX_FLAG_TSFT;
+ an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
+ sta->ht_cap.ampdu_factor);
+ an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
}
-static u8 parse_mpdudensity(u8 mpdudensity)
+static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
{
- /*
- * 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;
- }
+ 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_ht_conf(struct ath_softc *sc,
- struct ieee80211_bss_conf *bss_conf)
+static void ath9k_tasklet(unsigned long data)
{
-#define IEEE80211_HT_CAP_40MHZ_INTOLERANT BIT(14)
- struct ath_ht_info *ht_info = &sc->sc_ht_info;
-
- if (bss_conf->assoc_ht) {
- ht_info->ext_chan_offset =
- bss_conf->ht_bss_conf->bss_cap &
- IEEE80211_HT_IE_CHA_SEC_OFFSET;
-
- if (!(bss_conf->ht_conf->cap &
- IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
- (bss_conf->ht_bss_conf->bss_cap &
- IEEE80211_HT_IE_CHA_WIDTH))
- ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
- else
- ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
+ struct ath_softc *sc = (struct ath_softc *)data;
+ u32 status = sc->sc_intrstatus;
- ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
- ht_info->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
- bss_conf->ht_conf->ampdu_factor);
- ht_info->mpdudensity =
- parse_mpdudensity(bss_conf->ht_conf->ampdu_density);
+ if (status & ATH9K_INT_FATAL) {
+ /* need a chip reset */
+ ath_reset(sc, false);
+ return;
+ } else {
+ 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);
+ }
+ /* XXX: optimize this */
+ if (status & ATH9K_INT_TX)
+ ath_tx_tasklet(sc);
}
-#undef IEEE80211_HT_CAP_40MHZ_INTOLERANT
+ /* re-enable hardware interrupt */
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
}
-static void ath9k_bss_assoc_info(struct ath_softc *sc,
- struct ieee80211_bss_conf *bss_conf)
+static irqreturn_t ath_isr(int irq, void *dev)
{
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_channel *curchan = hw->conf.channel;
- struct ath_vap *avp;
- int pos;
- DECLARE_MAC_BUF(mac);
+ struct ath_softc *sc = dev;
+ struct ath_hal *ah = sc->sc_ah;
+ enum ath9k_int status;
+ bool sched = false;
- if (bss_conf->assoc) {
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
- __func__,
- bss_conf->aid);
-
- avp = sc->sc_vaps[0];
- if (avp == NULL) {
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
- __func__);
- return;
+ do {
+ if (sc->sc_flags & SC_OP_INVALID) {
+ /*
+ * The hardware is not ready/present, don't
+ * touch anything. Note this can happen early
+ * on if the IRQ is shared.
+ */
+ return IRQ_NONE;
}
-
- /* New association, store aid */
- if (avp->av_opmode == ATH9K_M_STA) {
- sc->sc_curaid = bss_conf->aid;
- ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
- sc->sc_curaid);
+ if (!ath9k_hw_intrpend(ah)) { /* shared irq, not for us */
+ return IRQ_NONE;
}
- /* Configure the beacon */
- ath_beacon_config(sc, 0);
- sc->sc_flags |= SC_OP_BEACONS;
+ /*
+ * 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 */
- /* Reset rssi stats */
- sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
+ status &= sc->sc_imask; /* discard unasked-for bits */
- /* Update chainmask */
- ath_update_chainmask(sc, bss_conf->assoc_ht);
+ /*
+ * If there are no status bits set, then this interrupt was not
+ * for me (should have been caught above).
+ */
+ if (!status)
+ return IRQ_NONE;
- DPRINTF(sc, ATH_DBG_CONFIG,
- "%s: bssid %s aid 0x%x\n",
- __func__,
- print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
+ sc->sc_intrstatus = status;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
- __func__,
- curchan->center_freq);
+ if (status & ATH9K_INT_FATAL) {
+ /* need a chip reset */
+ sched = true;
+ } else if (status & ATH9K_INT_RXORN) {
+ /* need a chip reset */
+ sched = true;
+ } else {
+ if (status & ATH9K_INT_SWBA) {
+ /* schedule a tasklet for beacon handling */
+ tasklet_schedule(&sc->bcon_tasklet);
+ }
+ if (status & ATH9K_INT_RXEOL) {
+ /*
+ * NB: the hardware should re-read the link when
+ * RXE bit is written, but it doesn't work
+ * at least on older hardware revs.
+ */
+ sched = true;
+ }
- pos = ath_get_channel(sc, curchan);
- if (pos == -1) {
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Invalid channel\n", __func__);
- return;
+ if (status & ATH9K_INT_TXURN)
+ /* bump tx trigger level */
+ ath9k_hw_updatetxtriglevel(ah, true);
+ /* XXX: optimize this */
+ if (status & ATH9K_INT_RX)
+ sched = true;
+ if (status & ATH9K_INT_TX)
+ sched = true;
+ if (status & ATH9K_INT_BMISS)
+ sched = true;
+ /* carrier sense timeout */
+ if (status & ATH9K_INT_CST)
+ sched = 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->sc_halstats);
+ ath9k_hw_set_interrupts(ah, sc->sc_imask);
+ }
+ if (status & ATH9K_INT_TIM_TIMER) {
+ if (!(ah->ah_caps.hw_caps &
+ ATH9K_HW_CAP_AUTOSLEEP)) {
+ /* Clear RxAbort bit so that we can
+ * receive frames */
+ ath9k_hw_setrxabort(ah, 0);
+ sched = true;
+ }
+ }
}
+ } while (0);
- if (hw->conf.ht_conf.ht_supported)
- sc->sc_ah->ah_channels[pos].chanmode =
- ath_get_extchanmode(sc, curchan);
- else
- sc->sc_ah->ah_channels[pos].chanmode =
- (curchan->band == IEEE80211_BAND_2GHZ) ?
- CHANNEL_G : CHANNEL_A;
+ ath_debug_stat_interrupt(sc, status);
- /* set h/w channel */
- if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to set channel\n",
- __func__);
+ if (sched) {
+ /* turn off every interrupt except SWBA */
+ ath9k_hw_set_interrupts(ah, (sc->sc_imask & ATH9K_INT_SWBA));
+ tasklet_schedule(&sc->intr_tq);
+ }
- ath_rate_newstate(sc, avp);
- /* Update ratectrl about the new state */
- ath_rc_node_update(hw, avp->rc_node);
+ return IRQ_HANDLED;
+}
- /* Start ANI */
- mod_timer(&sc->sc_ani.timer,
- jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
+static int ath_get_channel(struct ath_softc *sc,
+ struct ieee80211_channel *chan)
+{
+ int i;
- } else {
- DPRINTF(sc, ATH_DBG_CONFIG,
- "%s: Bss Info DISSOC\n", __func__);
- sc->sc_curaid = 0;
+ 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;
}
-void ath_get_beaconconfig(struct ath_softc *sc,
- int if_id,
- struct ath_beacon_config *conf)
+static u32 ath_get_extchanmode(struct ath_softc *sc,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type)
{
- struct ieee80211_hw *hw = sc->hw;
+ u32 chanmode = 0;
- /* fill in beacon config data */
+ 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;
+ }
- conf->beacon_interval = hw->conf.beacon_int;
- conf->listen_interval = 100;
- conf->dtim_count = 1;
- conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
+ return chanmode;
}
-void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
- struct ath_xmit_status *tx_status, struct ath_node *an)
+static int ath_keyset(struct ath_softc *sc, u16 keyix,
+ struct ath9k_keyval *hk, const u8 mac[ETH_ALEN])
{
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ bool status;
- DPRINTF(sc, ATH_DBG_XMIT,
- "%s: TX complete: skb: %p\n", __func__, skb);
+ status = ath9k_hw_set_keycache_entry(sc->sc_ah,
+ keyix, hk, mac, false);
- if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
- tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
- /* free driver's private data area of tx_info */
- if (tx_info->driver_data[0] != NULL)
- kfree(tx_info->driver_data[0]);
- tx_info->driver_data[0] = NULL;
+ return status != false;
+}
+
+static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key,
+ struct ath9k_keyval *hk,
+ const u8 *addr)
+{
+ 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 */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ return ath_keyset(sc, keyix, hk, addr);
+ }
+ if (!sc->sc_splitmic) {
+ /*
+ * data key goes at first index,
+ * the hal handles the MIC keys at index+64.
+ */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
+ return ath_keyset(sc, keyix, hk, addr);
+ }
+ /*
+ * TX key goes at first index, RX key at +32.
+ * The hal handles the MIC keys at index+64.
+ */
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ if (!ath_keyset(sc, keyix, hk, NULL)) {
+ /* Txmic entry failed. No need to proceed further */
+ DPRINTF(sc, ATH_DBG_KEYCACHE,
+ "Setting TX MIC Key Failed\n");
+ return 0;
}
- if (tx_status->flags & ATH_TX_BAR) {
- tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
- tx_status->flags &= ~ATH_TX_BAR;
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ /* XXX delete tx key on failure? */
+ return ath_keyset(sc, 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->sc_keymax / 2; i++) {
+ if (test_bit(i, sc->sc_keymap) ||
+ test_bit(i + 64, sc->sc_keymap))
+ continue; /* At least one part of TKIP key allocated */
+ if (sc->sc_splitmic &&
+ (test_bit(i + 32, sc->sc_keymap) ||
+ test_bit(i + 64 + 32, sc->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;
- if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) {
- if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
- /* Frame was not ACKed, but an ACK was expected */
- tx_info->status.excessive_retries = 1;
+ /* First, try to find slots that would not be available for TKIP. */
+ if (sc->sc_splitmic) {
+ for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 4; i++) {
+ if (!test_bit(i, sc->sc_keymap) &&
+ (test_bit(i + 32, sc->sc_keymap) ||
+ test_bit(i + 64, sc->sc_keymap) ||
+ test_bit(i + 64 + 32, sc->sc_keymap)))
+ return i;
+ if (!test_bit(i + 32, sc->sc_keymap) &&
+ (test_bit(i, sc->sc_keymap) ||
+ test_bit(i + 64, sc->sc_keymap) ||
+ test_bit(i + 64 + 32, sc->sc_keymap)))
+ return i + 32;
+ if (!test_bit(i + 64, sc->sc_keymap) &&
+ (test_bit(i , sc->sc_keymap) ||
+ test_bit(i + 32, sc->sc_keymap) ||
+ test_bit(i + 64 + 32, sc->sc_keymap)))
+ return i + 64;
+ if (!test_bit(i + 64 + 32, sc->sc_keymap) &&
+ (test_bit(i, sc->sc_keymap) ||
+ test_bit(i + 32, sc->sc_keymap) ||
+ test_bit(i + 64, sc->sc_keymap)))
+ return i + 64 + 32;
}
} else {
- /* Frame was ACKed */
- tx_info->flags |= IEEE80211_TX_STAT_ACK;
+ for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 2; i++) {
+ if (!test_bit(i, sc->sc_keymap) &&
+ test_bit(i + 64, sc->sc_keymap))
+ return i;
+ if (test_bit(i, sc->sc_keymap) &&
+ !test_bit(i + 64, sc->sc_keymap))
+ return i + 64;
+ }
}
- tx_info->status.retry_count = tx_status->retries;
+ /* No partially used TKIP slots, pick any available slot */
+ for (i = IEEE80211_WEP_NKID; i < sc->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->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->sc_keymap))
+ return i; /* Found a free slot for a key */
+ }
- ieee80211_tx_status(hw, skb);
- if (an)
- ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
+ /* No free slot found */
+ return -1;
}
-int _ath_rx_indicate(struct ath_softc *sc,
- struct sk_buff *skb,
- struct ath_recv_status *status,
- u16 keyix)
+static int ath_key_config(struct ath_softc *sc,
+ const u8 *addr,
+ struct ieee80211_key_conf *key)
{
- struct ieee80211_hw *hw = sc->hw;
- struct ath_node *an = NULL;
- struct ieee80211_rx_status rx_status;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
- int padsize;
- enum ATH_RX_TYPE st;
-
- /* see if any padding is done by the hw and remove it */
- if (hdrlen & 3) {
- padsize = hdrlen % 4;
- memmove(skb->data + padsize, skb->data, hdrlen);
- skb_pull(skb, padsize);
+ 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 -EINVAL;
+ }
+
+ 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) {
+ struct ieee80211_vif *vif;
+
+ mac = addr;
+ vif = sc->sc_vaps[0];
+ 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 {
+ mac = 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 -EIO; /* no free key cache entries */
}
- /* Prepare rx status */
- ath9k_rx_prepare(sc, skb, status, &rx_status);
+ if (key->alg == ALG_TKIP)
+ ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac);
+ else
+ ret = ath_keyset(sc, idx, &hk, mac);
+
+ if (!ret)
+ return -EIO;
+
+ set_bit(idx, sc->sc_keymap);
+ if (key->alg == ALG_TKIP) {
+ set_bit(idx + 64, sc->sc_keymap);
+ if (sc->sc_splitmic) {
+ set_bit(idx + 32, sc->sc_keymap);
+ set_bit(idx + 64 + 32, sc->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;
- if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
- !(status->flags & ATH_RX_DECRYPT_ERROR)) {
- rx_status.flag |= RX_FLAG_DECRYPTED;
- } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
- && !(status->flags & ATH_RX_DECRYPT_ERROR)
- && skb->len >= hdrlen + 4) {
- keyix = skb->data[hdrlen + 3] >> 6;
+ clear_bit(key->hw_key_idx, sc->sc_keymap);
+ if (key->alg != ALG_TKIP)
+ return;
- if (test_bit(keyix, sc->sc_keymap))
- rx_status.flag |= RX_FLAG_DECRYPTED;
+ clear_bit(key->hw_key_idx + 64, sc->sc_keymap);
+ if (sc->sc_splitmic) {
+ clear_bit(key->hw_key_idx + 32, sc->sc_keymap);
+ clear_bit(key->hw_key_idx + 64 + 32, sc->sc_keymap);
}
+}
- spin_lock_bh(&sc->node_lock);
- an = ath_node_find(sc, hdr->addr2);
- spin_unlock_bh(&sc->node_lock);
+static void setup_ht_cap(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 */
- if (an) {
- ath_rx_input(sc, an,
- hw->conf.ht_conf.ht_supported,
- skb, status, &st);
- }
- if (!an || (st != ATH_RX_CONSUMED))
- __ieee80211_rx(hw, skb, &rx_status);
+ 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;
- return 0;
+ 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));
+ ht_info->mcs.rx_mask[0] = 0xff;
+ ht_info->mcs.rx_mask[1] = 0xff;
+ ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
}
-int ath_rx_subframe(struct ath_node *an,
- struct sk_buff *skb,
- struct ath_recv_status *status)
+static void ath9k_bss_assoc_info(struct ath_softc *sc,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf)
{
- struct ath_softc *sc = an->an_sc;
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_rx_status rx_status;
+ struct ath_vap *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->sc_curbssid);
- /* Prepare rx status */
- ath9k_rx_prepare(sc, skb, status, &rx_status);
- if (!(status->flags & ATH_RX_DECRYPT_ERROR))
- rx_status.flag |= RX_FLAG_DECRYPTED;
+ /* New association, store aid */
+ if (avp->av_opmode == NL80211_IFTYPE_STATION) {
+ sc->sc_curaid = bss_conf->aid;
+ ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
+ sc->sc_curaid);
+ }
+
+ /* Configure the beacon */
+ ath_beacon_config(sc, 0);
+ sc->sc_flags |= SC_OP_BEACONS;
- __ieee80211_rx(hw, skb, &rx_status);
+ /* Reset rssi stats */
+ sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
- return 0;
+ /* Start ANI */
+ mod_timer(&sc->sc_ani.timer,
+ jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
+
+ } else {
+ DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISSOC\n");
+ sc->sc_curaid = 0;
+ }
}
/********************************/
ath_deinit_leds(sc);
}
-#ifdef CONFIG_RFKILL
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+
/*******************/
/* Rfkill */
/*******************/
static void ath_radio_enable(struct ath_softc *sc)
{
struct ath_hal *ah = sc->sc_ah;
- int status;
+ struct ieee80211_channel *channel = sc->hw->conf.channel;
+ int r;
spin_lock_bh(&sc->sc_resetlock);
- if (!ath9k_hw_reset(ah, ah->ah_curchan,
- sc->sc_ht_info.tx_chan_width,
- sc->sc_tx_chainmask,
- sc->sc_rx_chainmask,
- sc->sc_ht_extprotspacing,
- false, &status)) {
+
+ r = ath9k_hw_reset(ah, ah->ah_curchan, false);
+
+ if (r) {
DPRINTF(sc, ATH_DBG_FATAL,
- "%s: unable to reset channel %u (%uMhz) "
- "flags 0x%x hal status %u\n", __func__,
- ath9k_hw_mhz2ieee(ah,
- ah->ah_curchan->channel,
- ah->ah_curchan->channelFlags),
- ah->ah_curchan->channel,
- ah->ah_curchan->channelFlags, status);
+ "Unable to reset channel %u (%uMhz) ",
+ "reset status %u\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,
- "%s: unable to restart recv logic\n", __func__);
+ "Unable to restart recv logic\n");
return;
}
static void ath_radio_disable(struct ath_softc *sc)
{
struct ath_hal *ah = sc->sc_ah;
- int status;
-
+ struct ieee80211_channel *channel = sc->hw->conf.channel;
+ int r;
ieee80211_stop_queues(sc->hw);
ath_flushrecv(sc); /* flush recv queue */
spin_lock_bh(&sc->sc_resetlock);
- if (!ath9k_hw_reset(ah, ah->ah_curchan,
- sc->sc_ht_info.tx_chan_width,
- sc->sc_tx_chainmask,
- sc->sc_rx_chainmask,
- sc->sc_ht_extprotspacing,
- false, &status)) {
+ r = ath9k_hw_reset(ah, ah->ah_curchan, false);
+ if (r) {
DPRINTF(sc, ATH_DBG_FATAL,
- "%s: unable to reset channel %u (%uMhz) "
- "flags 0x%x hal status %u\n", __func__,
- ath9k_hw_mhz2ieee(ah,
- ah->ah_curchan->channel,
- ah->ah_curchan->channelFlags),
- ah->ah_curchan->channel,
- ah->ah_curchan->channelFlags, status);
+ "Unable to reset channel %u (%uMhz) "
+ "reset status %u\n",
+ channel->center_freq, r);
}
spin_unlock_bh(&sc->sc_resetlock);
sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
- "radio as it is disabled by h/w \n");
+ "radio as it is disabled by h/w\n");
return -EPERM;
}
ath_radio_enable(sc);
sc->rf_kill.rfkill = NULL;
}
}
+
+static int ath_start_rfkill_poll(struct ath_softc *sc)
+{
+ if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+ queue_delayed_work(sc->hw->workqueue,
+ &sc->rf_kill.rfkill_poll, 0);
+
+ 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_free(sc->rf_kill.rfkill);
+
+ /* Deinitialize the device */
+ ath_detach(sc);
+ if (sc->pdev->irq)
+ free_irq(sc->pdev->irq, sc);
+ pci_iounmap(sc->pdev, sc->mem);
+ pci_release_region(sc->pdev, 0);
+ pci_disable_device(sc->pdev);
+ ieee80211_free_hw(sc->hw);
+ return -EIO;
+ } else {
+ sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
+ }
+ }
+
+ return 0;
+}
#endif /* CONFIG_RFKILL */
-static int ath_detach(struct ath_softc *sc)
+static void ath_detach(struct ath_softc *sc)
{
struct ieee80211_hw *hw = sc->hw;
+ int i = 0;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
-
- /* Deinit LED control */
- ath_deinit_leds(sc);
+ DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n");
-#ifdef CONFIG_RFKILL
- /* deinit rfkill */
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
ath_deinit_rfkill(sc);
#endif
-
- /* Unregister hw */
+ ath_deinit_leds(sc);
ieee80211_unregister_hw(hw);
-
- /* unregister Rate control */
- ath_rate_control_unregister();
-
- /* tx/rx cleanup */
-
ath_rx_cleanup(sc);
ath_tx_cleanup(sc);
- /* Deinit */
+ tasklet_kill(&sc->intr_tq);
+ tasklet_kill(&sc->bcon_tasklet);
- ath_deinit(sc);
+ if (!(sc->sc_flags & SC_OP_INVALID))
+ ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
- return 0;
+ /* 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);
}
-static int ath_attach(u16 devid,
- struct ath_softc *sc)
+static int ath_init(u16 devid, struct ath_softc *sc)
{
- struct ieee80211_hw *hw = sc->hw;
- int error = 0;
+ struct ath_hal *ah = NULL;
+ int status;
+ int error = 0, i;
+ int csz = 0;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
+ /* XXX: hardware will not be ready until ath_open() being called */
+ sc->sc_flags |= SC_OP_INVALID;
- error = ath_init(devid, sc);
- if (error != 0)
- return error;
+ if (ath9k_init_debug(sc) < 0)
+ printk(KERN_ERR "Unable to create debugfs files\n");
- /* Init nodes */
+ spin_lock_init(&sc->sc_resetlock);
+ mutex_init(&sc->mutex);
+ tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
+ tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet,
+ (unsigned long)sc);
- INIT_LIST_HEAD(&sc->node_list);
- spin_lock_init(&sc->node_lock);
+ /*
+ * Cache line size is used to size and align various
+ * structures used to communicate with the hardware.
+ */
+ bus_read_cachesize(sc, &csz);
+ /* XXX assert csz is non-zero */
+ sc->sc_cachelsz = csz << 2; /* convert to bytes */
- /* get mac address from hardware and set in mac80211 */
+ ah = ath9k_hw_attach(devid, sc, sc->mem, &status);
+ if (ah == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to attach hardware; HAL status %u\n", status);
+ error = -ENXIO;
+ goto bad;
+ }
+ sc->sc_ah = ah;
- SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
+ /* Get the hardware key cache size. */
+ sc->sc_keymax = ah->ah_caps.keycache_size;
+ if (sc->sc_keymax > ATH_KEYMAX) {
+ DPRINTF(sc, ATH_DBG_KEYCACHE,
+ "Warning, using only %u entries in %u key cache\n",
+ ATH_KEYMAX, sc->sc_keymax);
+ sc->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->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)
+ goto bad;
+
+ /* default to MONITOR mode */
+ sc->sc_ah->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->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->sc_ani.sc_noise_floor = ATH_DEFAULT_NOISE_FLOOR;
+ setup_timer(&sc->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->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->sc_config.txpowlimit = ATH_TXPOWER_MAX;
+ sc->sc_config.txpowlimit_override = 0;
+
+ /* 11n Capabilities */
+ if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
+ sc->sc_flags |= SC_OP_TXAGGR;
+ sc->sc_flags |= SC_OP_RXAGGR;
+ }
+
+ sc->sc_tx_chainmask = ah->ah_caps.tx_chainmask;
+ sc->sc_rx_chainmask = ah->ah_caps.rx_chainmask;
+
+ ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL);
+ sc->rx.defant = ath9k_hw_getdefantenna(ah);
+
+ ath9k_hw_getmac(ah, sc->sc_myaddr);
+ if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) {
+ ath9k_hw_getbssidmask(ah, sc->sc_bssidmask);
+ ATH_SET_VAP_BSSID_MASK(sc->sc_bssidmask);
+ ath9k_hw_setbssidmask(ah, sc->sc_bssidmask);
+ }
+
+ 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] = ATH_IF_ID_ANY;
+
+ /* save MISC configurations */
+ sc->sc_config.swBeaconProcess = 1;
/* setup channels and rates */
sc->rates[IEEE80211_BAND_2GHZ];
sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
- if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
- /* Setup HT capabilities for 2.4Ghz*/
- setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info);
-
- hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
- &sc->sbands[IEEE80211_BAND_2GHZ];
-
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].bitrates =
sc->rates[IEEE80211_BAND_5GHZ];
- sc->sbands[IEEE80211_BAND_5GHZ].band =
- IEEE80211_BAND_5GHZ;
+ sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
+ }
+
+ 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);
+
+ return error;
+}
+
+static int ath_attach(u16 devid, struct ath_softc *sc)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ int error = 0;
+
+ 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_myaddr);
+
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+ IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
+ IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_AMPDU_AGGREGATION;
+
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+
+ hw->queues = 4;
+ hw->max_rates = 4;
+ hw->max_rate_tries = ATH_11N_TXMAXTRY;
+ hw->sta_data_size = sizeof(struct ath_node);
+ hw->vif_data_size = sizeof(struct ath_vap);
+
+ hw->rate_control_algorithm = "ath9k_rate_control";
+
+ if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
+ setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
+ if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
+ setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
+ }
+
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ];
+ if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &sc->sbands[IEEE80211_BAND_5GHZ];
+
+ /* initialize tx/rx engine */
+ error = ath_tx_init(sc, ATH_TXBUF);
+ if (error != 0)
+ goto detach;
+
+ error = ath_rx_init(sc, ATH_RXBUF);
+ if (error != 0)
+ goto detach;
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+ /* Initialze h/w Rfkill */
+ if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+ INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
+
+ /* Initialize s/w rfkill */
+ if (ath_init_sw_rfkill(sc))
+ goto detach;
+#endif
+
+ error = ieee80211_register_hw(hw);
+
+ /* Initialize LED control */
+ ath_init_leds(sc);
+
+ return 0;
+detach:
+ ath_detach(sc);
+ return error;
+}
+
+int ath_reset(struct ath_softc *sc, bool retry_tx)
+{
+ struct ath_hal *ah = sc->sc_ah;
+ struct ieee80211_hw *hw = sc->hw;
+ int r;
+
+ ath9k_hw_set_interrupts(ah, 0);
+ ath_draintxq(sc, retry_tx);
+ ath_stoprecv(sc);
+ ath_flushrecv(sc);
+
+ spin_lock_bh(&sc->sc_resetlock);
+ r = ath9k_hw_reset(ah, sc->sc_ah->ah_curchan, false);
+ if (r)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %u\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, ATH_IF_ID_ANY); /* restart beacons */
+
+ ath9k_hw_set_interrupts(ah, sc->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);
+
+ /* 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_name = name;
+ 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->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;
- if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
- /* Setup HT capabilities for 5Ghz*/
- setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info);
+ while (ndesc_skipped) {
+ dma_len = ndesc_skipped * sizeof(struct ath_desc);
+ dd->dd_desc_len += dma_len;
- hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
- &sc->sbands[IEEE80211_BAND_5GHZ];
+ ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
+ };
}
- /* FIXME: Have to figure out proper hw init values later */
+ /* allocate descriptors */
+ dd->dd_desc = pci_alloc_consistent(sc->pdev,
+ dd->dd_desc_len,
+ &dd->dd_desc_paddr);
+ 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",
+ dd->dd_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 = kmalloc(bsize, GFP_KERNEL);
+ if (bf == NULL) {
+ error = -ENOMEM;
+ goto fail2;
+ }
+ memset(bf, 0, bsize);
+ dd->dd_bufptr = bf;
- hw->queues = 4;
- hw->ampdu_queues = 1;
+ INIT_LIST_HEAD(head);
+ for (i = 0; i < nbuf; i++, bf++, ds += ndesc) {
+ bf->bf_desc = ds;
+ bf->bf_daddr = DS2PHYS(dd, ds);
- /* Register rate control */
- hw->rate_control_algorithm = "ath9k_rate_control";
- error = ath_rate_control_register();
- if (error != 0) {
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to register rate control "
- "algorithm:%d\n", __func__, error);
- ath_rate_control_unregister();
- goto bad;
+ if (!(sc->sc_ah->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:
+ pci_free_consistent(sc->pdev,
+ 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
+}
- error = ieee80211_register_hw(hw);
- if (error != 0) {
- ath_rate_control_unregister();
- goto bad;
- }
+void ath_descdma_cleanup(struct ath_softc *sc,
+ struct ath_descdma *dd,
+ struct list_head *head)
+{
+ pci_free_consistent(sc->pdev,
+ dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr);
- /* Initialize LED control */
- ath_init_leds(sc);
+ INIT_LIST_HEAD(head);
+ kfree(dd->dd_bufptr);
+ memset(dd, 0, sizeof(*dd));
+}
-#ifdef CONFIG_RFKILL
- /* Initialze h/w Rfkill */
- if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
+int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
+{
+ int qnum;
- /* Initialize s/w rfkill */
- if (ath_init_sw_rfkill(sc))
- goto detach;
-#endif
+ 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;
+ }
- /* initialize tx/rx engine */
+ return qnum;
+}
- error = ath_tx_init(sc, ATH_TXBUF);
- if (error != 0)
- goto detach;
+int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
+{
+ int qnum;
- error = ath_rx_init(sc, ATH_RXBUF);
- if (error != 0)
- goto detach;
+ 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 0;
-detach:
- ath_detach(sc);
-bad:
- return error;
+ return qnum;
}
+/**********************/
+/* mac80211 callbacks */
+/**********************/
+
static int ath9k_start(struct ieee80211_hw *hw)
{
struct ath_softc *sc = hw->priv;
struct ieee80211_channel *curchan = hw->conf.channel;
- int error = 0, pos;
+ struct ath9k_channel *init_channel;
+ int r, pos;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
- "initial channel: %d MHz\n", __func__, curchan->center_freq);
+ DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with "
+ "initial channel: %d MHz\n", curchan->center_freq);
/* setup initial channel */
pos = ath_get_channel(sc, curchan);
if (pos == -1) {
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
+ DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n", curchan->center_freq);
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;
+ init_channel = &sc->sc_ah->ah_channels[pos];
+
+ /* Reset SERDES registers */
+ ath9k_hw_configpcipowersave(sc->sc_ah, 0);
- /* open ath_dev */
- error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
- if (error) {
+ /*
+ * 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,
- "%s: Unable to complete ath_open\n", __func__);
- return error;
+ "Unable to reset hardware; reset status %u "
+ "(freq %u MHz)\n", r,
+ curchan->center_freq);
+ spin_unlock_bh(&sc->sc_resetlock);
+ return r;
}
+ spin_unlock_bh(&sc->sc_resetlock);
-#ifdef CONFIG_RFKILL
- /* Start rfkill polling */
- if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- queue_delayed_work(sc->hw->workqueue,
- &sc->rf_kill.rfkill_poll, 0);
-
- 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_free(sc->rf_kill.rfkill);
+ /*
+ * This is needed only to setup initial state
+ * but it's best done after a reset.
+ */
+ ath_update_txpow(sc);
- /* Deinitialize the device */
- if (sc->pdev->irq)
- free_irq(sc->pdev->irq, sc);
- ath_detach(sc);
- pci_iounmap(sc->pdev, sc->mem);
- pci_release_region(sc->pdev, 0);
- pci_disable_device(sc->pdev);
- ieee80211_free_hw(hw);
- return -EIO;
- } else {
- sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
- }
+ /*
+ * 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");
+ return -EIO;
}
-#endif
- ieee80211_wake_queues(hw);
- return 0;
+ /* Setup our intr mask. */
+ sc->sc_imask = ATH9K_INT_RX | ATH9K_INT_TX
+ | ATH9K_INT_RXEOL | ATH9K_INT_RXORN
+ | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL;
+
+ if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_GTT)
+ sc->sc_imask |= ATH9K_INT_GTT;
+
+ if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
+ sc->sc_imask |= ATH9K_INT_CST;
+
+ /*
+ * Enable MIB interrupts when there are hardware phy counters.
+ * Note we only do this (at the moment) for station mode.
+ */
+ if (ath9k_hw_phycounters(sc->sc_ah) &&
+ ((sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) ||
+ (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC)))
+ sc->sc_imask |= ATH9K_INT_MIB;
+ /*
+ * Some hardware processes the TIM IE and fires an
+ * interrupt when the TIM bit is set. For hardware
+ * that does, if not overridden by configuration,
+ * enable the TIM interrupt when operating as station.
+ */
+ if ((sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) &&
+ (sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) &&
+ !sc->sc_config.swBeaconProcess)
+ sc->sc_imask |= ATH9K_INT_TIM;
+
+ ath_cache_conf_rate(sc, &hw->conf);
+
+ sc->sc_flags &= ~SC_OP_INVALID;
+
+ /* Disable BMISS interrupt when we're not associated */
+ sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
+
+ ieee80211_wake_queues(sc->hw);
+
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
+ r = ath_start_rfkill_poll(sc);
+#endif
+ 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_softc *sc = hw->priv;
+ struct ath_tx_control txctl;
int hdrlen, padsize;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ memset(&txctl, 0, sizeof(struct ath_tx_control));
/*
* As a temporary workaround, assign seq# here; this will likely need
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->seq_no += 0x10;
+ sc->tx.seq_no += 0x10;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
- hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
+ hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
}
/* Add the padding after the header if this is not already done */
memmove(skb->data, skb->data + padsize, hdrlen);
}
- DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
- __func__,
- skb);
+ /* Check if a tx queue is available */
- if (ath_tx_start(sc, skb) != 0) {
- DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
- dev_kfree_skb_any(skb);
- /* FIXME: Check for proper return value from ATH_DEV */
- return 0;
+ 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(sc, 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_softc *sc = hw->priv;
- int error;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
+ if (sc->sc_flags & SC_OP_INVALID) {
+ DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
+ return;
+ }
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "Cleaning up\n");
- error = ath_suspend(sc);
- if (error)
- DPRINTF(sc, ATH_DBG_CONFIG,
- "%s: Device is no longer present\n", __func__);
+ ieee80211_stop_queues(sc->hw);
+
+ /* make sure h/w will not generate any interrupt
+ * before setting the invalid flag. */
+ ath9k_hw_set_interrupts(sc->sc_ah, 0);
- ieee80211_stop_queues(hw);
+ if (!(sc->sc_flags & SC_OP_INVALID)) {
+ ath_draintxq(sc, false);
+ ath_stoprecv(sc);
+ ath9k_hw_phy_disable(sc->sc_ah);
+ } else
+ sc->rx.rxlink = NULL;
-#ifdef CONFIG_RFKILL
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif
+ /* 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;
+
+ 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_softc *sc = hw->priv;
- int error, ic_opmode = 0;
+ struct ath_vap *avp = (void *)conf->vif->drv_priv;
+ enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
/* Support only vap for now */
switch (conf->type) {
case NL80211_IFTYPE_STATION:
- ic_opmode = ATH9K_M_STA;
+ ic_opmode = NL80211_IFTYPE_STATION;
break;
case NL80211_IFTYPE_ADHOC:
- ic_opmode = ATH9K_M_IBSS;
+ ic_opmode = NL80211_IFTYPE_ADHOC;
break;
case NL80211_IFTYPE_AP:
- ic_opmode = ATH9K_M_HOSTAP;
+ ic_opmode = NL80211_IFTYPE_AP;
break;
default:
DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Interface type %d not yet supported\n",
- __func__, conf->type);
+ "Interface type %d not yet supported\n", conf->type);
return -EOPNOTSUPP;
}
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
- __func__,
- ic_opmode);
+ DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VAP of type: %d\n", ic_opmode);
- error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
- if (error) {
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to attach vap, error: %d\n",
- __func__, error);
- return error;
- }
+ /* Set the VAP opmode */
+ avp->av_opmode = ic_opmode;
+ avp->av_bslot = -1;
+
+ if (ic_opmode == NL80211_IFTYPE_AP)
+ ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
+
+ sc->sc_vaps[0] = conf->vif;
+ sc->sc_nvaps++;
+
+ /* Set the device opmode */
+ sc->sc_ah->ah_opmode = ic_opmode;
if (conf->type == NL80211_IFTYPE_AP) {
/* TODO: is this a suitable place to start ANI for AP mode? */
struct ieee80211_if_init_conf *conf)
{
struct ath_softc *sc = hw->priv;
- struct ath_vap *avp;
- int error;
-
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
+ struct ath_vap *avp = (void *)conf->vif->drv_priv;
- avp = sc->sc_vaps[0];
- if (avp == NULL) {
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
- __func__);
- return;
- }
+ DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n");
-#ifdef CONFIG_SLOW_ANT_DIV
- ath_slow_ant_div_stop(&sc->sc_antdiv);
-#endif
/* Stop ANI */
del_timer_sync(&sc->sc_ani.timer);
- /* Update ratectrl */
- ath_rate_newstate(sc, avp);
-
/* Reclaim beacon resources */
- if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
- sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
- ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
+ if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP ||
+ sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC) {
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
ath_beacon_return(sc, avp);
}
- /* Set interrupt mask */
- sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
- ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
sc->sc_flags &= ~SC_OP_BEACONS;
- error = ath_vap_detach(sc, 0);
- if (error)
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to detach vap, error: %d\n",
- __func__, error);
+ sc->sc_vaps[0] = NULL;
+ sc->sc_nvaps--;
}
-static int ath9k_config(struct ieee80211_hw *hw,
- struct ieee80211_conf *conf)
+static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
{
struct ath_softc *sc = hw->priv;
- struct ieee80211_channel *curchan = hw->conf.channel;
- int pos;
+ struct ieee80211_conf *conf = &hw->conf;
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
- __func__,
- curchan->center_freq);
+ mutex_lock(&sc->mutex);
+ if (changed & (IEEE80211_CONF_CHANGE_CHANNEL |
+ IEEE80211_CONF_CHANGE_HT)) {
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ int pos;
- pos = ath_get_channel(sc, curchan);
- if (pos == -1) {
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
- return -EINVAL;
- }
+ DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
+ curchan->center_freq);
- sc->sc_ah->ah_channels[pos].chanmode =
- (curchan->band == IEEE80211_BAND_2GHZ) ?
- CHANNEL_G : CHANNEL_A;
+ 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;
+ }
- if (sc->sc_curaid && hw->conf.ht_conf.ht_supported)
+ sc->tx_chan_width = ATH9K_HT_MACMODE_20;
sc->sc_ah->ah_channels[pos].chanmode =
- ath_get_extchanmode(sc, curchan);
+ (curchan->band == IEEE80211_BAND_2GHZ) ?
+ CHANNEL_G : CHANNEL_A;
+
+ if (conf->ht.enabled) {
+ if (conf->ht.channel_type == NL80211_CHAN_HT40PLUS ||
+ conf->ht.channel_type == NL80211_CHAN_HT40MINUS)
+ sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
+
+ sc->sc_ah->ah_channels[pos].chanmode =
+ ath_get_extchanmode(sc, curchan,
+ conf->ht.channel_type);
+ }
+
+ ath_update_chainmask(sc, conf->ht.enabled);
- sc->sc_config.txpowlimit = 2 * conf->power_level;
+ if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) {
+ DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n");
+ mutex_unlock(&sc->mutex);
+ return -EINVAL;
+ }
+ }
- /* set h/w channel */
- if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
- __func__);
+ if (changed & IEEE80211_CONF_CHANGE_POWER)
+ sc->sc_config.txpowlimit = 2 * conf->power_level;
+ mutex_unlock(&sc->mutex);
return 0;
}
{
struct ath_softc *sc = hw->priv;
struct ath_hal *ah = sc->sc_ah;
- struct ath_vap *avp;
+ struct ath_vap *avp = (void *)vif->drv_priv;
u32 rfilt = 0;
int error, i;
- DECLARE_MAC_BUF(mac);
-
- avp = sc->sc_vaps[0];
- if (avp == NULL) {
- DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
- __func__);
- return -EINVAL;
- }
/* TODO: Need to decide which hw opmode to use for multi-interface
* cases */
if (vif->type == NL80211_IFTYPE_AP &&
- ah->ah_opmode != ATH9K_M_HOSTAP) {
- ah->ah_opmode = ATH9K_M_HOSTAP;
+ ah->ah_opmode != NL80211_IFTYPE_AP) {
+ ah->ah_opmode = NL80211_IFTYPE_STATION;
ath9k_hw_setopmode(ah);
ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
/* Request full reset to get hw opmode changed properly */
switch (vif->type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
- /* Update ratectrl about the new state */
- ath_rate_newstate(sc, avp);
-
/* Set BSSID */
memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
sc->sc_curaid = 0;
/* Set aggregation protection mode parameters */
sc->sc_config.ath_aggr_prot = 0;
- /*
- * Reset our TSF so that its value is lower than the
- * beacon that we are trying to catch.
- * Only then hw will update its TSF register with the
- * new beacon. Reset the TSF before setting the BSSID
- * to avoid allowing in any frames that would update
- * our TSF only to have us clear it
- * immediately thereafter.
- */
- ath9k_hw_reset_tsf(sc->sc_ah);
-
- /* Disable BMISS interrupt when we're not associated */
- ath9k_hw_set_interrupts(sc->sc_ah,
- sc->sc_imask &
- ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
- sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
-
DPRINTF(sc, ATH_DBG_CONFIG,
- "%s: RX filter 0x%x bssid %s aid 0x%x\n",
- __func__, rfilt,
- print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
+ "RX filter 0x%x bssid %pM aid 0x%x\n",
+ rfilt, sc->sc_curbssid, sc->sc_curaid);
/* need to reconfigure the beacon */
sc->sc_flags &= ~SC_OP_BEACONS ;
* causes reconfiguration; we may be called
* with beacon transmission active.
*/
- ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
error = ath_beacon_alloc(sc, 0);
if (error != 0)
changed_flags &= SUPPORTED_FILTERS;
*total_flags &= SUPPORTED_FILTERS;
- sc->rx_filter = *total_flags;
+ sc->rx.rxfilter = *total_flags;
rfilt = ath_calcrxfilter(sc);
ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
}
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
- __func__, sc->rx_filter);
+ 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_sta *sta)
{
struct ath_softc *sc = hw->priv;
- struct ath_node *an;
- unsigned long flags;
- DECLARE_MAC_BUF(mac);
-
- spin_lock_irqsave(&sc->node_lock, flags);
- an = ath_node_find(sc, sta->addr);
- spin_unlock_irqrestore(&sc->node_lock, flags);
switch (cmd) {
case STA_NOTIFY_ADD:
- spin_lock_irqsave(&sc->node_lock, flags);
- if (!an) {
- ath_node_attach(sc, sta->addr, 0);
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %s\n",
- __func__, print_mac(mac, sta->addr));
- } else {
- ath_node_get(sc, sta->addr);
- }
- spin_unlock_irqrestore(&sc->node_lock, flags);
+ ath_node_attach(sc, sta);
break;
case STA_NOTIFY_REMOVE:
- if (!an)
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Removal of a non-existent node\n",
- __func__);
- else {
- ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %s\n",
- __func__,
- print_mac(mac, sta->addr));
- }
+ ath_node_detach(sc, sta);
break;
default:
break;
qnum = ath_get_hal_qnum(queue, sc);
DPRINTF(sc, ATH_DBG_CONFIG,
- "%s: Configure tx [queue/halq] [%d/%d], "
+ "Configure tx [queue/halq] [%d/%d], "
"aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
- __func__,
- queue,
- qnum,
- params->aifs,
- params->cw_min,
- params->cw_max,
- params->txop);
+ 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,
- "%s: TXQ Update failed\n", __func__);
+ DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n");
return ret;
}
struct ath_softc *sc = hw->priv;
int ret = 0;
- DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
+ DPRINTF(sc, ATH_DBG_KEYCACHE, "Set HW Key\n");
switch (cmd) {
case SET_KEY:
ret = ath_key_config(sc, addr, key);
- if (!ret) {
- set_bit(key->keyidx, sc->sc_keymap);
- key->hw_key_idx = key->keyidx;
+ 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;
+ ret = 0;
}
break;
case DISABLE_KEY:
ath_key_delete(sc, key);
- clear_bit(key->keyidx, sc->sc_keymap);
break;
default:
ret = -EINVAL;
struct ath_softc *sc = hw->priv;
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
- __func__,
+ 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;
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
- __func__,
+ 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;
}
- if (changed & BSS_CHANGED_HT) {
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n",
- __func__,
- bss_conf->assoc_ht);
- ath9k_ht_conf(sc, bss_conf);
- }
-
if (changed & BSS_CHANGED_ASSOC) {
- DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
- __func__,
+ DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
bss_conf->assoc);
- ath9k_bss_assoc_info(sc, bss_conf);
+ ath9k_bss_assoc_info(sc, vif, bss_conf);
}
}
switch (action) {
case IEEE80211_AMPDU_RX_START:
- ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn);
- if (ret < 0)
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to start RX aggregation\n",
- __func__);
+ if (!(sc->sc_flags & SC_OP_RXAGGR))
+ ret = -ENOTSUPP;
break;
case IEEE80211_AMPDU_RX_STOP:
- ret = ath_rx_aggr_stop(sc, sta->addr, tid);
- if (ret < 0)
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to stop RX aggregation\n",
- __func__);
break;
case IEEE80211_AMPDU_TX_START:
- ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn);
+ ret = ath_tx_aggr_start(sc, sta, tid, ssn);
if (ret < 0)
DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to start TX aggregation\n",
- __func__);
+ "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->addr, tid);
+ ret = ath_tx_aggr_stop(sc, sta, tid);
if (ret < 0)
DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unable to stop TX aggregation\n",
- __func__);
+ "Unable to stop TX aggregation\n");
ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
break;
+ case IEEE80211_AMPDU_TX_RESUME:
+ ath_tx_aggr_resume(sc, sta, tid);
+ break;
default:
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: Unknown AMPDU action\n", __func__);
+ DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n");
}
return ret;
}
-static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value)
-{
- return -EOPNOTSUPP;
-}
-
static struct ieee80211_ops ath9k_ops = {
.tx = ath9k_tx,
.start = ath9k_start,
.config = ath9k_config,
.config_interface = ath9k_config_interface,
.configure_filter = ath9k_configure_filter,
- .get_stats = NULL,
.sta_notify = ath9k_sta_notify,
.conf_tx = ath9k_conf_tx,
- .get_tx_stats = NULL,
.bss_info_changed = ath9k_bss_info_changed,
- .set_tim = NULL,
.set_key = ath9k_set_key,
- .hw_scan = NULL,
- .get_tkip_seq = NULL,
- .set_rts_threshold = NULL,
- .set_frag_threshold = NULL,
- .set_retry_limit = NULL,
.get_tsf = ath9k_get_tsf,
.reset_tsf = ath9k_reset_tsf,
- .tx_last_beacon = NULL,
.ampdu_action = ath9k_ampdu_action,
- .set_frag_threshold = ath9k_no_fragmentation,
};
+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.
+ */
+static 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.
+ */
+static 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 ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
void __iomem *mem;
struct ath_softc *sc;
struct ieee80211_hw *hw;
- const char *athname;
u8 csz;
u32 val;
int ret = 0;
+ struct ath_hal *ah;
if (pci_enable_device(pdev))
return -EIO;
- /* XXX 32-bit addressing only */
- if (pci_set_dma_mask(pdev, 0xffffffff)) {
- printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
- ret = -ENODEV;
+ ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+
+ if (ret) {
+ printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
+ goto bad;
+ }
+
+ ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+
+ if (ret) {
+ printk(KERN_ERR "ath9k: 32-bit DMA consistent "
+ "DMA enable failed\n");
goto bad;
}
goto bad2;
}
- hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
- IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
- IEEE80211_HW_SIGNAL_DBM |
- IEEE80211_HW_NOISE_DBM;
-
- hw->wiphy->interface_modes =
- BIT(NL80211_IFTYPE_AP) |
- BIT(NL80211_IFTYPE_STATION) |
- BIT(NL80211_IFTYPE_ADHOC);
-
SET_IEEE80211_DEV(hw, &pdev->dev);
pci_set_drvdata(pdev, hw);
goto bad4;
}
- athname = ath9k_hw_probe(id->vendor, id->device);
-
- printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
+ ah = sc->sc_ah;
+ printk(KERN_INFO
+ "%s: Atheros AR%s MAC/BB Rev:%x "
+ "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
wiphy_name(hw->wiphy),
- athname ? athname : "Atheros ???",
+ ath_mac_bb_name(ah->ah_macVersion),
+ ah->ah_macRev,
+ ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
+ ah->ah_phyRev,
(unsigned long)mem, pdev->irq);
return 0;
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
struct ath_softc *sc = hw->priv;
- enum ath9k_int status;
- if (pdev->irq) {
- ath9k_hw_set_interrupts(sc->sc_ah, 0);
- /* clear the ISR */
- ath9k_hw_getisr(sc->sc_ah, &status);
- sc->sc_flags |= SC_OP_INVALID;
- free_irq(pdev->irq, sc);
- }
ath_detach(sc);
-
+ if (pdev->irq)
+ free_irq(pdev->irq, sc);
pci_iounmap(pdev, sc->mem);
pci_release_region(pdev, 0);
pci_disable_device(pdev);
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
-#ifdef CONFIG_RFKILL
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
-#ifdef CONFIG_RFKILL
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
/*
* check the h/w rfkill state on resume
* and start the rfkill poll timer
static int __init init_ath_pci(void)
{
+ int error;
+
printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
+ /* Register rate control algorithm */
+ error = ath_rate_control_register();
+ if (error != 0) {
+ printk(KERN_ERR
+ "Unable to register rate control algorithm: %d\n",
+ error);
+ ath_rate_control_unregister();
+ return error;
+ }
+
if (pci_register_driver(&ath_pci_driver) < 0) {
printk(KERN_ERR
"ath_pci: No devices found, driver not installed.\n");
+ ath_rate_control_unregister();
pci_unregister_driver(&ath_pci_driver);
return -ENODEV;
}
static void __exit exit_ath_pci(void)
{
+ ath_rate_control_unregister();
pci_unregister_driver(&ath_pci_driver);
- printk(KERN_INFO "%s: driver unloaded\n", dev_info);
+ printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
}
module_exit(exit_ath_pci);
git.openpandora.org / pandora-kernel.git / blobdiff