#define SKB_CB_ATHBUF(__skb) (*((struct ath_buf **)__skb->cb))
+static inline bool ath_is_alt_ant_ratio_better(int alt_ratio, int maxdelta,
+ int mindelta, int main_rssi_avg,
+ int alt_rssi_avg, int pkt_count)
+{
+ return (((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
+ (alt_rssi_avg > main_rssi_avg + maxdelta)) ||
+ (alt_rssi_avg > main_rssi_avg + mindelta)) && (pkt_count > 50);
+}
+
static inline bool ath9k_check_auto_sleep(struct ath_softc *sc)
{
return sc->ps_enabled &&
ath9k_hw_setrxfilter(ah, rfilt);
/* configure bssid mask */
- if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
- ath_hw_setbssidmask(common);
+ ath_hw_setbssidmask(common);
/* configure operational mode */
ath9k_hw_setopmode(ah);
bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
+ bf->bf_buf_addr = 0;
ath_print(common, ATH_DBG_FATAL,
"dma_mapping_error() on RX init\n");
error = -ENOMEM;
ath_rx_addbuffer_edma(sc, ATH9K_RX_QUEUE_LP,
sc->rx.rx_edma[ATH9K_RX_QUEUE_LP].rx_fifo_hwsize);
- spin_unlock_bh(&sc->rx.rxbuflock);
-
ath_opmode_init(sc);
- ath9k_hw_startpcureceive(sc->sc_ah, (sc->sc_flags & SC_OP_SCANNING));
+ ath9k_hw_startpcureceive(sc->sc_ah, (sc->sc_flags & SC_OP_OFFCHANNEL));
+
+ spin_unlock_bh(&sc->rx.rxbuflock);
}
static void ath_edma_stop_recv(struct ath_softc *sc)
{
- spin_lock_bh(&sc->rx.rxbuflock);
ath_rx_remove_buffer(sc, ATH9K_RX_QUEUE_HP);
ath_rx_remove_buffer(sc, ATH9K_RX_QUEUE_LP);
- spin_unlock_bh(&sc->rx.rxbuflock);
}
int ath_rx_init(struct ath_softc *sc, int nbufs)
struct ath_buf *bf;
int error = 0;
- spin_lock_init(&sc->rx.rxflushlock);
+ spin_lock_init(&sc->rx.pcu_lock);
sc->sc_flags &= ~SC_OP_RXFLUSH;
spin_lock_init(&sc->rx.rxbuflock);
bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
+ bf->bf_buf_addr = 0;
ath_print(common, ATH_DBG_FATAL,
"dma_mapping_error() on RX init\n");
error = -ENOMEM;
goto err;
}
- bf->bf_dmacontext = bf->bf_buf_addr;
}
sc->rx.rxlink = NULL;
}
common->rx_bufsize,
DMA_FROM_DEVICE);
dev_kfree_skb(skb);
+ bf->bf_buf_addr = 0;
+ bf->bf_mpdu = NULL;
}
}
| ATH9K_RX_FILTER_UCAST | ATH9K_RX_FILTER_BCAST
| ATH9K_RX_FILTER_MCAST;
- /* If not a STA, enable processing of Probe Requests */
- if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
+ if (sc->rx.rxfilter & FIF_PROBE_REQ)
rfilt |= ATH9K_RX_FILTER_PROBEREQ;
/*
rfilt |= ATH9K_RX_FILTER_CONTROL;
if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) &&
+ (sc->nvifs <= 1) &&
!(sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC))
rfilt |= ATH9K_RX_FILTER_MYBEACON;
else
rfilt |= ATH9K_RX_FILTER_BEACON;
- if ((AR_SREV_9280_10_OR_LATER(sc->sc_ah) ||
- AR_SREV_9285_10_OR_LATER(sc->sc_ah)) &&
+ if ((AR_SREV_9280_20_OR_LATER(sc->sc_ah) ||
+ AR_SREV_9285_12_OR_LATER(sc->sc_ah)) &&
(sc->sc_ah->opmode == NL80211_IFTYPE_AP) &&
(sc->rx.rxfilter & FIF_PSPOLL))
rfilt |= ATH9K_RX_FILTER_PSPOLL;
if (conf_is_ht(&sc->hw->conf))
rfilt |= ATH9K_RX_FILTER_COMP_BAR;
- if (sc->sec_wiphy || (sc->rx.rxfilter & FIF_OTHER_BSS)) {
- /* TODO: only needed if more than one BSSID is in use in
- * station/adhoc mode */
+ if (sc->sec_wiphy || (sc->nvifs > 1) ||
+ (sc->rx.rxfilter & FIF_OTHER_BSS)) {
/* The following may also be needed for other older chips */
if (sc->sc_ah->hw_version.macVersion == AR_SREV_VERSION_9160)
rfilt |= ATH9K_RX_FILTER_PROM;
ath9k_hw_rxena(ah);
start_recv:
- spin_unlock_bh(&sc->rx.rxbuflock);
ath_opmode_init(sc);
- ath9k_hw_startpcureceive(ah, (sc->sc_flags & SC_OP_SCANNING));
+ ath9k_hw_startpcureceive(ah, (sc->sc_flags & SC_OP_OFFCHANNEL));
+
+ spin_unlock_bh(&sc->rx.rxbuflock);
return 0;
}
struct ath_hw *ah = sc->sc_ah;
bool stopped;
+ spin_lock_bh(&sc->rx.rxbuflock);
ath9k_hw_stoppcurecv(ah);
ath9k_hw_setrxfilter(ah, 0);
stopped = ath9k_hw_stopdmarecv(ah);
ath_edma_stop_recv(sc);
else
sc->rx.rxlink = NULL;
+ spin_unlock_bh(&sc->rx.rxbuflock);
return stopped;
}
void ath_flushrecv(struct ath_softc *sc)
{
- spin_lock_bh(&sc->rx.rxflushlock);
sc->sc_flags |= SC_OP_RXFLUSH;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
ath_rx_tasklet(sc, 1, true);
ath_rx_tasklet(sc, 1, false);
sc->sc_flags &= ~SC_OP_RXFLUSH;
- spin_unlock_bh(&sc->rx.rxflushlock);
}
static bool ath_beacon_dtim_pending_cab(struct sk_buff *skb)
* No more broadcast/multicast frames to be received at this
* point.
*/
- sc->ps_flags &= ~PS_WAIT_FOR_CAB;
+ sc->ps_flags &= ~(PS_WAIT_FOR_CAB | PS_WAIT_FOR_BEACON);
ath_print(common, ATH_DBG_PS,
"All PS CAB frames received, back to sleep\n");
} else if ((sc->ps_flags & PS_WAIT_FOR_PSPOLL_DATA) &&
if (rx_stats->rs_status & ATH9K_RXERR_DECRYPT) {
*decrypt_error = true;
} else if (rx_stats->rs_status & ATH9K_RXERR_MIC) {
- if (ieee80211_is_ctl(fc))
- /*
- * Sometimes, we get invalid
- * MIC failures on valid control frames.
- * Remove these mic errors.
- */
- rx_stats->rs_status &= ~ATH9K_RXERR_MIC;
- else
+ /*
+ * The MIC error bit is only valid if the frame
+ * is not a control frame or fragment, and it was
+ * decrypted using a valid TKIP key.
+ */
+ if (!ieee80211_is_ctl(fc) &&
+ !ieee80211_has_morefrags(fc) &&
+ !(le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG) &&
+ test_bit(rx_stats->rs_keyix, common->tkip_keymap))
rxs->flag |= RX_FLAG_MMIC_ERROR;
+ else
+ rx_stats->rs_status &= ~ATH9K_RXERR_MIC;
}
/*
* Reject error frames with the exception of
* at least one sdata of a wiphy on mac80211 but with ath9k virtual
* wiphy you'd have to iterate over every wiphy and each sdata.
*/
- sta = ieee80211_find_sta_by_hw(hw, hdr->addr2);
+ if (is_multicast_ether_addr(hdr->addr1))
+ sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, NULL);
+ else
+ sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, hdr->addr1);
+
if (sta) {
an = (struct ath_node *) sta->drv_priv;
if (rx_stats->rs_rssi != ATH9K_RSSI_BAD &&
rxs->flag &= ~RX_FLAG_DECRYPTED;
}
+static void ath_lnaconf_alt_good_scan(struct ath_ant_comb *antcomb,
+ struct ath_hw_antcomb_conf ant_conf,
+ int main_rssi_avg)
+{
+ antcomb->quick_scan_cnt = 0;
+
+ if (ant_conf.main_lna_conf == ATH_ANT_DIV_COMB_LNA2)
+ antcomb->rssi_lna2 = main_rssi_avg;
+ else if (ant_conf.main_lna_conf == ATH_ANT_DIV_COMB_LNA1)
+ antcomb->rssi_lna1 = main_rssi_avg;
+
+ switch ((ant_conf.main_lna_conf << 4) | ant_conf.alt_lna_conf) {
+ case (0x10): /* LNA2 A-B */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA1;
+ break;
+ case (0x20): /* LNA1 A-B */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA2;
+ break;
+ case (0x21): /* LNA1 LNA2 */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA2;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->second_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ break;
+ case (0x12): /* LNA2 LNA1 */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->second_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ break;
+ case (0x13): /* LNA2 A+B */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA1;
+ break;
+ case (0x23): /* LNA1 A+B */
+ antcomb->main_conf = ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ antcomb->first_quick_scan_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ antcomb->second_quick_scan_conf = ATH_ANT_DIV_COMB_LNA2;
+ break;
+ default:
+ break;
+ }
+}
+
+static void ath_select_ant_div_from_quick_scan(struct ath_ant_comb *antcomb,
+ struct ath_hw_antcomb_conf *div_ant_conf,
+ int main_rssi_avg, int alt_rssi_avg,
+ int alt_ratio)
+{
+ /* alt_good */
+ switch (antcomb->quick_scan_cnt) {
+ case 0:
+ /* set alt to main, and alt to first conf */
+ div_ant_conf->main_lna_conf = antcomb->main_conf;
+ div_ant_conf->alt_lna_conf = antcomb->first_quick_scan_conf;
+ break;
+ case 1:
+ /* set alt to main, and alt to first conf */
+ div_ant_conf->main_lna_conf = antcomb->main_conf;
+ div_ant_conf->alt_lna_conf = antcomb->second_quick_scan_conf;
+ antcomb->rssi_first = main_rssi_avg;
+ antcomb->rssi_second = alt_rssi_avg;
+
+ if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) {
+ /* main is LNA1 */
+ if (ath_is_alt_ant_ratio_better(alt_ratio,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_HI,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
+ main_rssi_avg, alt_rssi_avg,
+ antcomb->total_pkt_count))
+ antcomb->first_ratio = true;
+ else
+ antcomb->first_ratio = false;
+ } else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2) {
+ if (ath_is_alt_ant_ratio_better(alt_ratio,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_MID,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
+ main_rssi_avg, alt_rssi_avg,
+ antcomb->total_pkt_count))
+ antcomb->first_ratio = true;
+ else
+ antcomb->first_ratio = false;
+ } else {
+ if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
+ (alt_rssi_avg > main_rssi_avg +
+ ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) ||
+ (alt_rssi_avg > main_rssi_avg)) &&
+ (antcomb->total_pkt_count > 50))
+ antcomb->first_ratio = true;
+ else
+ antcomb->first_ratio = false;
+ }
+ break;
+ case 2:
+ antcomb->alt_good = false;
+ antcomb->scan_not_start = false;
+ antcomb->scan = false;
+ antcomb->rssi_first = main_rssi_avg;
+ antcomb->rssi_third = alt_rssi_avg;
+
+ if (antcomb->second_quick_scan_conf == ATH_ANT_DIV_COMB_LNA1)
+ antcomb->rssi_lna1 = alt_rssi_avg;
+ else if (antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ antcomb->rssi_lna2 = alt_rssi_avg;
+ else if (antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2) {
+ if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2)
+ antcomb->rssi_lna2 = main_rssi_avg;
+ else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1)
+ antcomb->rssi_lna1 = main_rssi_avg;
+ }
+
+ if (antcomb->rssi_lna2 > antcomb->rssi_lna1 +
+ ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA)
+ div_ant_conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA2;
+ else
+ div_ant_conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA1;
+
+ if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) {
+ if (ath_is_alt_ant_ratio_better(alt_ratio,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_HI,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
+ main_rssi_avg, alt_rssi_avg,
+ antcomb->total_pkt_count))
+ antcomb->second_ratio = true;
+ else
+ antcomb->second_ratio = false;
+ } else if (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2) {
+ if (ath_is_alt_ant_ratio_better(alt_ratio,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_MID,
+ ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
+ main_rssi_avg, alt_rssi_avg,
+ antcomb->total_pkt_count))
+ antcomb->second_ratio = true;
+ else
+ antcomb->second_ratio = false;
+ } else {
+ if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
+ (alt_rssi_avg > main_rssi_avg +
+ ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) ||
+ (alt_rssi_avg > main_rssi_avg)) &&
+ (antcomb->total_pkt_count > 50))
+ antcomb->second_ratio = true;
+ else
+ antcomb->second_ratio = false;
+ }
+
+ /* set alt to the conf with maximun ratio */
+ if (antcomb->first_ratio && antcomb->second_ratio) {
+ if (antcomb->rssi_second > antcomb->rssi_third) {
+ /* first alt*/
+ if ((antcomb->first_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA1) ||
+ (antcomb->first_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA2))
+ /* Set alt LNA1 or LNA2*/
+ if (div_ant_conf->main_lna_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ else
+ /* Set alt to A+B or A-B */
+ div_ant_conf->alt_lna_conf =
+ antcomb->first_quick_scan_conf;
+ } else if ((antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA1) ||
+ (antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA2)) {
+ /* Set alt LNA1 or LNA2 */
+ if (div_ant_conf->main_lna_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ } else {
+ /* Set alt to A+B or A-B */
+ div_ant_conf->alt_lna_conf =
+ antcomb->second_quick_scan_conf;
+ }
+ } else if (antcomb->first_ratio) {
+ /* first alt */
+ if ((antcomb->first_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA1) ||
+ (antcomb->first_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA2))
+ /* Set alt LNA1 or LNA2 */
+ if (div_ant_conf->main_lna_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ else
+ /* Set alt to A+B or A-B */
+ div_ant_conf->alt_lna_conf =
+ antcomb->first_quick_scan_conf;
+ } else if (antcomb->second_ratio) {
+ /* second alt */
+ if ((antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA1) ||
+ (antcomb->second_quick_scan_conf ==
+ ATH_ANT_DIV_COMB_LNA2))
+ /* Set alt LNA1 or LNA2 */
+ if (div_ant_conf->main_lna_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ else
+ /* Set alt to A+B or A-B */
+ div_ant_conf->alt_lna_conf =
+ antcomb->second_quick_scan_conf;
+ } else {
+ /* main is largest */
+ if ((antcomb->main_conf == ATH_ANT_DIV_COMB_LNA1) ||
+ (antcomb->main_conf == ATH_ANT_DIV_COMB_LNA2))
+ /* Set alt LNA1 or LNA2 */
+ if (div_ant_conf->main_lna_conf ==
+ ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else
+ div_ant_conf->alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ else
+ /* Set alt to A+B or A-B */
+ div_ant_conf->alt_lna_conf = antcomb->main_conf;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void ath_ant_div_conf_fast_divbias(struct ath_hw_antcomb_conf *ant_conf)
+{
+ /* Adjust the fast_div_bias based on main and alt lna conf */
+ switch ((ant_conf->main_lna_conf << 4) | ant_conf->alt_lna_conf) {
+ case (0x01): /* A-B LNA2 */
+ ant_conf->fast_div_bias = 0x3b;
+ break;
+ case (0x02): /* A-B LNA1 */
+ ant_conf->fast_div_bias = 0x3d;
+ break;
+ case (0x03): /* A-B A+B */
+ ant_conf->fast_div_bias = 0x1;
+ break;
+ case (0x10): /* LNA2 A-B */
+ ant_conf->fast_div_bias = 0x7;
+ break;
+ case (0x12): /* LNA2 LNA1 */
+ ant_conf->fast_div_bias = 0x2;
+ break;
+ case (0x13): /* LNA2 A+B */
+ ant_conf->fast_div_bias = 0x7;
+ break;
+ case (0x20): /* LNA1 A-B */
+ ant_conf->fast_div_bias = 0x6;
+ break;
+ case (0x21): /* LNA1 LNA2 */
+ ant_conf->fast_div_bias = 0x0;
+ break;
+ case (0x23): /* LNA1 A+B */
+ ant_conf->fast_div_bias = 0x6;
+ break;
+ case (0x30): /* A+B A-B */
+ ant_conf->fast_div_bias = 0x1;
+ break;
+ case (0x31): /* A+B LNA2 */
+ ant_conf->fast_div_bias = 0x3b;
+ break;
+ case (0x32): /* A+B LNA1 */
+ ant_conf->fast_div_bias = 0x3d;
+ break;
+ default:
+ break;
+ }
+}
+
+/* Antenna diversity and combining */
+static void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
+{
+ struct ath_hw_antcomb_conf div_ant_conf;
+ struct ath_ant_comb *antcomb = &sc->ant_comb;
+ int alt_ratio = 0, alt_rssi_avg = 0, main_rssi_avg = 0, curr_alt_set;
+ int curr_main_set, curr_bias;
+ int main_rssi = rs->rs_rssi_ctl0;
+ int alt_rssi = rs->rs_rssi_ctl1;
+ int rx_ant_conf, main_ant_conf;
+ bool short_scan = false;
+
+ rx_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_CURRENT_SHIFT) &
+ ATH_ANT_RX_MASK;
+ main_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_MAIN_SHIFT) &
+ ATH_ANT_RX_MASK;
+
+ /* Record packet only when alt_rssi is positive */
+ if (alt_rssi > 0) {
+ antcomb->total_pkt_count++;
+ antcomb->main_total_rssi += main_rssi;
+ antcomb->alt_total_rssi += alt_rssi;
+ if (main_ant_conf == rx_ant_conf)
+ antcomb->main_recv_cnt++;
+ else
+ antcomb->alt_recv_cnt++;
+ }
+
+ /* Short scan check */
+ if (antcomb->scan && antcomb->alt_good) {
+ if (time_after(jiffies, antcomb->scan_start_time +
+ msecs_to_jiffies(ATH_ANT_DIV_COMB_SHORT_SCAN_INTR)))
+ short_scan = true;
+ else
+ if (antcomb->total_pkt_count ==
+ ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT) {
+ alt_ratio = ((antcomb->alt_recv_cnt * 100) /
+ antcomb->total_pkt_count);
+ if (alt_ratio < ATH_ANT_DIV_COMB_ALT_ANT_RATIO)
+ short_scan = true;
+ }
+ }
+
+ if (((antcomb->total_pkt_count < ATH_ANT_DIV_COMB_MAX_PKTCOUNT) ||
+ rs->rs_moreaggr) && !short_scan)
+ return;
+
+ if (antcomb->total_pkt_count) {
+ alt_ratio = ((antcomb->alt_recv_cnt * 100) /
+ antcomb->total_pkt_count);
+ main_rssi_avg = (antcomb->main_total_rssi /
+ antcomb->total_pkt_count);
+ alt_rssi_avg = (antcomb->alt_total_rssi /
+ antcomb->total_pkt_count);
+ }
+
+
+ ath9k_hw_antdiv_comb_conf_get(sc->sc_ah, &div_ant_conf);
+ curr_alt_set = div_ant_conf.alt_lna_conf;
+ curr_main_set = div_ant_conf.main_lna_conf;
+ curr_bias = div_ant_conf.fast_div_bias;
+
+ antcomb->count++;
+
+ if (antcomb->count == ATH_ANT_DIV_COMB_MAX_COUNT) {
+ if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) {
+ ath_lnaconf_alt_good_scan(antcomb, div_ant_conf,
+ main_rssi_avg);
+ antcomb->alt_good = true;
+ } else {
+ antcomb->alt_good = false;
+ }
+
+ antcomb->count = 0;
+ antcomb->scan = true;
+ antcomb->scan_not_start = true;
+ }
+
+ if (!antcomb->scan) {
+ if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) {
+ if (curr_alt_set == ATH_ANT_DIV_COMB_LNA2) {
+ /* Switch main and alt LNA */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ } else if (curr_alt_set == ATH_ANT_DIV_COMB_LNA1) {
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ }
+
+ goto div_comb_done;
+ } else if ((curr_alt_set != ATH_ANT_DIV_COMB_LNA1) &&
+ (curr_alt_set != ATH_ANT_DIV_COMB_LNA2)) {
+ /* Set alt to another LNA */
+ if (curr_main_set == ATH_ANT_DIV_COMB_LNA2)
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ else if (curr_main_set == ATH_ANT_DIV_COMB_LNA1)
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+
+ goto div_comb_done;
+ }
+
+ if ((alt_rssi_avg < (main_rssi_avg +
+ ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA)))
+ goto div_comb_done;
+ }
+
+ if (!antcomb->scan_not_start) {
+ switch (curr_alt_set) {
+ case ATH_ANT_DIV_COMB_LNA2:
+ antcomb->rssi_lna2 = alt_rssi_avg;
+ antcomb->rssi_lna1 = main_rssi_avg;
+ antcomb->scan = true;
+ /* set to A+B */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ break;
+ case ATH_ANT_DIV_COMB_LNA1:
+ antcomb->rssi_lna1 = alt_rssi_avg;
+ antcomb->rssi_lna2 = main_rssi_avg;
+ antcomb->scan = true;
+ /* set to A+B */
+ div_ant_conf.main_lna_conf = ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ break;
+ case ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2:
+ antcomb->rssi_add = alt_rssi_avg;
+ antcomb->scan = true;
+ /* set to A-B */
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ break;
+ case ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2:
+ antcomb->rssi_sub = alt_rssi_avg;
+ antcomb->scan = false;
+ if (antcomb->rssi_lna2 >
+ (antcomb->rssi_lna1 +
+ ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA)) {
+ /* use LNA2 as main LNA */
+ if ((antcomb->rssi_add > antcomb->rssi_lna1) &&
+ (antcomb->rssi_add > antcomb->rssi_sub)) {
+ /* set to A+B */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ } else if (antcomb->rssi_sub >
+ antcomb->rssi_lna1) {
+ /* set to A-B */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ } else {
+ /* set to LNA1 */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ }
+ } else {
+ /* use LNA1 as main LNA */
+ if ((antcomb->rssi_add > antcomb->rssi_lna2) &&
+ (antcomb->rssi_add > antcomb->rssi_sub)) {
+ /* set to A+B */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
+ } else if (antcomb->rssi_sub >
+ antcomb->rssi_lna1) {
+ /* set to A-B */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
+ } else {
+ /* set to LNA2 */
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ } else {
+ if (!antcomb->alt_good) {
+ antcomb->scan_not_start = false;
+ /* Set alt to another LNA */
+ if (curr_main_set == ATH_ANT_DIV_COMB_LNA2) {
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ } else if (curr_main_set == ATH_ANT_DIV_COMB_LNA1) {
+ div_ant_conf.main_lna_conf =
+ ATH_ANT_DIV_COMB_LNA1;
+ div_ant_conf.alt_lna_conf =
+ ATH_ANT_DIV_COMB_LNA2;
+ }
+ goto div_comb_done;
+ }
+ }
+
+ ath_select_ant_div_from_quick_scan(antcomb, &div_ant_conf,
+ main_rssi_avg, alt_rssi_avg,
+ alt_ratio);
+
+ antcomb->quick_scan_cnt++;
+
+div_comb_done:
+ ath_ant_div_conf_fast_divbias(&div_ant_conf);
+
+ ath9k_hw_antdiv_comb_conf_set(sc->sc_ah, &div_ant_conf);
+
+ antcomb->scan_start_time = jiffies;
+ antcomb->total_pkt_count = 0;
+ antcomb->main_total_rssi = 0;
+ antcomb->alt_total_rssi = 0;
+ antcomb->main_recv_cnt = 0;
+ antcomb->alt_recv_cnt = 0;
+}
+
int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
{
struct ath_buf *bf;
u8 rx_status_len = ah->caps.rx_status_len;
u64 tsf = 0;
u32 tsf_lower = 0;
+ unsigned long flags;
if (edma)
dma_type = DMA_BIDIRECTIONAL;
bf->bf_buf_addr))) {
dev_kfree_skb_any(requeue_skb);
bf->bf_mpdu = NULL;
+ bf->bf_buf_addr = 0;
ath_print(common, ATH_DBG_FATAL,
"dma_mapping_error() on RX\n");
ath_rx_send_to_mac80211(hw, sc, skb, rxs);
break;
}
- bf->bf_dmacontext = bf->bf_buf_addr;
/*
* change the default rx antenna if rx diversity chooses the
sc->rx.rxotherant = 0;
}
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
if (unlikely(ath9k_check_auto_sleep(sc) ||
(sc->ps_flags & (PS_WAIT_FOR_BEACON |
PS_WAIT_FOR_CAB |
PS_WAIT_FOR_PSPOLL_DATA))))
ath_rx_ps(sc, skb);
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
+ ath_ant_comb_scan(sc, &rs);
ath_rx_send_to_mac80211(hw, sc, skb, rxs);
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff