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path: root/drivers/net/wireless/ath/ath9k/main.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c172
1 files changed, 83 insertions, 89 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index cbf5d2a1bb2..c4874345251 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -104,37 +104,55 @@ static struct ieee80211_channel ath9k_5ghz_chantable[] = {
CHAN5G(5825, 37), /* Channel 165 */
};
+/* Atheros hardware rate code addition for short premble */
+#define SHPCHECK(__hw_rate, __flags) \
+ ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0)
+
+#define RATE(_bitrate, _hw_rate, _flags) { \
+ .bitrate = (_bitrate), \
+ .flags = (_flags), \
+ .hw_value = (_hw_rate), \
+ .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
+}
+
+static struct ieee80211_rate ath9k_legacy_rates[] = {
+ RATE(10, 0x1b, 0),
+ RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(60, 0x0b, 0),
+ RATE(90, 0x0f, 0),
+ RATE(120, 0x0a, 0),
+ RATE(180, 0x0e, 0),
+ RATE(240, 0x09, 0),
+ RATE(360, 0x0d, 0),
+ RATE(480, 0x08, 0),
+ RATE(540, 0x0c, 0),
+};
+
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];
+ sc->cur_rate_mode = ATH9K_MODE_11NG_HT20;
else if (conf_is_ht40_minus(conf))
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS];
+ sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS;
else if (conf_is_ht40_plus(conf))
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS];
+ sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS;
else
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11G];
+ sc->cur_rate_mode = 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];
+ sc->cur_rate_mode = ATH9K_MODE_11NA_HT20;
else if (conf_is_ht40_minus(conf))
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS];
+ sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS;
else if (conf_is_ht40_plus(conf))
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS];
+ sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS;
else
- sc->cur_rate_table =
- sc->hw_rate_table[ATH9K_MODE_11A];
+ sc->cur_rate_mode = ATH9K_MODE_11A;
break;
default:
BUG_ON(1);
@@ -190,51 +208,6 @@ static u8 parse_mpdudensity(u8 mpdudensity)
}
}
-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++;
-
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
- "Rate: %2dMbps, ratecode: %2d\n",
- rate[i].bitrate / 10, rate[i].hw_value);
- }
-}
-
static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
struct ieee80211_hw *hw)
{
@@ -1701,12 +1674,6 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
/* 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
@@ -1826,20 +1793,25 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
/* 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_11G, sc->sc_ah->caps.wireless_modes)) {
+ sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
+ sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
+ sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
+ ARRAY_SIZE(ath9k_2ghz_chantable);
+ sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
+ sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
+ ARRAY_SIZE(ath9k_legacy_rates);
+ }
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);
+ sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
+ ath9k_legacy_rates + 4;
+ sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
+ ARRAY_SIZE(ath9k_legacy_rates) - 4;
}
switch (ah->btcoex_hw.scheme) {
@@ -1906,8 +1878,9 @@ void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
hw->rate_control_algorithm = "ath9k_rate_control";
- hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
- &sc->sbands[IEEE80211_BAND_2GHZ];
+ if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes))
+ 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];
@@ -1946,9 +1919,12 @@ int ath_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
reg = &common->regulatory;
if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
- setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
+ if (test_bit(ATH9K_MODE_11G, ah->caps.wireless_modes))
+ setup_ht_cap(sc,
+ &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
if (test_bit(ATH9K_MODE_11A, ah->caps.wireless_modes))
- setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
+ setup_ht_cap(sc,
+ &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
}
/* initialize tx/rx engine */
@@ -2394,7 +2370,8 @@ static int ath9k_tx(struct ieee80211_hw *hw,
struct ath_softc *sc = aphy->sc;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_tx_control txctl;
- int hdrlen, padsize;
+ int padpos, padsize;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
ath_print(common, ATH_DBG_XMIT,
@@ -2404,7 +2381,6 @@ static int ath9k_tx(struct ieee80211_hw *hw,
}
if (sc->ps_enabled) {
- 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.
@@ -2424,7 +2400,6 @@ static int ath9k_tx(struct ieee80211_hw *hw,
* 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)) {
@@ -2452,7 +2427,6 @@ static int ath9k_tx(struct ieee80211_hw *hw,
* 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);
@@ -2460,13 +2434,13 @@ static int ath9k_tx(struct ieee80211_hw *hw,
}
/* 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;
+ padpos = ath9k_cmn_padpos(hdr->frame_control);
+ padsize = padpos & 3;
+ if (padsize && skb->len>padpos) {
if (skb_headroom(skb) < padsize)
return -1;
skb_push(skb, padsize);
- memmove(skb->data, skb->data + padsize, hdrlen);
+ memmove(skb->data, skb->data + padsize, padpos);
}
/* Check if a tx queue is available */
@@ -2731,8 +2705,15 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
}
}
+ /*
+ * We just prepare to enable PS. We have to wait until our AP has
+ * ACK'd our null data frame to disable RX otherwise we'll ignore
+ * those ACKs and end up retransmitting the same null data frames.
+ * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
+ */
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS) {
+ sc->sc_flags |= SC_OP_PS_ENABLED;
if (!(ah->caps.hw_caps &
ATH9K_HW_CAP_AUTOSLEEP)) {
if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
@@ -2740,11 +2721,20 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
ath9k_hw_set_interrupts(sc->sc_ah,
sc->imask);
}
- ath9k_hw_setrxabort(sc->sc_ah, 1);
}
- sc->ps_enabled = true;
+ /*
+ * At this point we know hardware has received an ACK
+ * of a previously sent null data frame.
+ */
+ if ((sc->sc_flags & SC_OP_NULLFUNC_COMPLETED)) {
+ sc->sc_flags &= ~SC_OP_NULLFUNC_COMPLETED;
+ sc->ps_enabled = true;
+ ath9k_hw_setrxabort(sc->sc_ah, 1);
+ }
} else {
sc->ps_enabled = false;
+ sc->sc_flags &= ~(SC_OP_PS_ENABLED |
+ SC_OP_NULLFUNC_COMPLETED);
ath9k_setpower(sc, ATH9K_PM_AWAKE);
if (!(ah->caps.hw_caps &
ATH9K_HW_CAP_AUTOSLEEP)) {
@@ -2898,6 +2888,10 @@ static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
if (ret)
ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
+ if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
+ if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret)
+ ath_beaconq_config(sc);
+
mutex_unlock(&sc->mutex);
return ret;