diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
-rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 607 |
1 files changed, 300 insertions, 307 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 68066c56e4e..2c6aefad372 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -56,10 +56,9 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, struct ath_tx_status *ts, int txok, int sendbar); static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, struct list_head *head, bool internal); -static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len); static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, struct ath_tx_status *ts, int nframes, int nbad, - int txok, bool update_rc); + int txok); static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, int seqno); static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, @@ -390,11 +389,9 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, while (bf) { bf_next = bf->bf_next; - bf->bf_state.bf_type |= BUF_XRETRY; if (!bf->bf_stale || bf_next != NULL) list_move_tail(&bf->list, &bf_head); - ath_tx_rc_status(sc, bf, ts, 1, 1, 0, false); ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, 0, 0); @@ -470,7 +467,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, clear_filter = true; txpending = 1; } else { - bf->bf_state.bf_type |= BUF_XRETRY; txfail = 1; sendbar = 1; txfail_cnt++; @@ -497,17 +493,14 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) { memcpy(tx_info->control.rates, rates, sizeof(rates)); - ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, true); + ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok); rc_update = false; - } else { - ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, false); } ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, !txfail, sendbar); } else { /* retry the un-acked ones */ - ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, false); if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) { if (bf->bf_next == NULL && bf_last->bf_stale) { struct ath_buf *tbf; @@ -523,26 +516,13 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_update_baw(sc, tid, seqno); spin_unlock_bh(&txq->axq_lock); - bf->bf_state.bf_type |= - BUF_XRETRY; - ath_tx_rc_status(sc, bf, ts, nframes, - nbad, 0, false); ath_tx_complete_buf(sc, bf, txq, &bf_head, - ts, 0, 0); + ts, 0, 1); break; } - ath9k_hw_cleartxdesc(sc->sc_ah, - tbf->bf_desc); fi->bf = tbf; - } else { - /* - * Clear descriptor status words for - * software retry - */ - ath9k_hw_cleartxdesc(sc->sc_ah, - bf->bf_desc); } } @@ -582,7 +562,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, rcu_read_unlock(); if (needreset) - ath_reset(sc, false); + ieee80211_queue_work(sc->hw, &sc->hw_reset_work); } static bool ath_lookup_legacy(struct ath_buf *bf) @@ -709,7 +689,8 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid, * Add delimiter when using RTS/CTS with aggregation * and non enterprise AR9003 card */ - if (first_subfrm) + if (first_subfrm && !AR_SREV_9580_10_OR_LATER(sc->sc_ah) && + (sc->sc_ah->ent_mode & AR_ENT_OTP_MIN_PKT_SIZE_DISABLE)) ndelim = max(ndelim, FIRST_DESC_NDELIMS); /* @@ -777,7 +758,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, if (!bf) continue; - bf->bf_state.bf_type |= BUF_AMPDU; + bf->bf_state.bf_type = BUF_AMPDU | BUF_AGGR; seqno = bf->bf_state.seqno; if (!bf_first) bf_first = bf; @@ -804,8 +785,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, } tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); - if (nframes && ((tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) || - !(tx_info->control.rates[0].flags & IEEE80211_TX_RC_MCS))) + if (nframes && (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) break; /* do not exceed subframe limit */ @@ -827,20 +807,17 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, nframes++; bf->bf_next = NULL; - ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, 0); /* link buffers of this frame to the aggregate */ if (!fi->retries) ath_tx_addto_baw(sc, tid, seqno); - ath9k_hw_set11n_aggr_middle(sc->sc_ah, bf->bf_desc, ndelim); + bf->bf_state.ndelim = ndelim; __skb_unlink(skb, &tid->buf_q); list_add_tail(&bf->list, bf_q); - if (bf_prev) { + if (bf_prev) bf_prev->bf_next = bf; - ath9k_hw_set_desc_link(sc->sc_ah, bf_prev->bf_desc, - bf->bf_daddr); - } + bf_prev = bf; } while (!skb_queue_empty(&tid->buf_q)); @@ -851,12 +828,245 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, #undef PADBYTES } +/* + * rix - rate index + * pktlen - total bytes (delims + data + fcs + pads + pad delims) + * width - 0 for 20 MHz, 1 for 40 MHz + * half_gi - to use 4us v/s 3.6 us for symbol time + */ +static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen, + int width, int half_gi, bool shortPreamble) +{ + u32 nbits, nsymbits, duration, nsymbols; + int streams; + + /* find number of symbols: PLCP + data */ + streams = HT_RC_2_STREAMS(rix); + nbits = (pktlen << 3) + OFDM_PLCP_BITS; + nsymbits = bits_per_symbol[rix % 8][width] * streams; + nsymbols = (nbits + nsymbits - 1) / nsymbits; + + if (!half_gi) + duration = SYMBOL_TIME(nsymbols); + else + duration = SYMBOL_TIME_HALFGI(nsymbols); + + /* addup duration for legacy/ht training and signal fields */ + duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams); + + return duration; +} + +static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, + struct ath_tx_info *info, int len) +{ + struct ath_hw *ah = sc->sc_ah; + struct sk_buff *skb; + struct ieee80211_tx_info *tx_info; + struct ieee80211_tx_rate *rates; + const struct ieee80211_rate *rate; + struct ieee80211_hdr *hdr; + int i; + u8 rix = 0; + + skb = bf->bf_mpdu; + tx_info = IEEE80211_SKB_CB(skb); + rates = tx_info->control.rates; + hdr = (struct ieee80211_hdr *)skb->data; + + /* set dur_update_en for l-sig computation except for PS-Poll frames */ + info->dur_update = !ieee80211_is_pspoll(hdr->frame_control); + + /* + * We check if Short Preamble is needed for the CTS rate by + * checking the BSS's global flag. + * But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used. + */ + rate = ieee80211_get_rts_cts_rate(sc->hw, tx_info); + info->rtscts_rate = rate->hw_value; + if (sc->sc_flags & SC_OP_PREAMBLE_SHORT) + info->rtscts_rate |= rate->hw_value_short; + + for (i = 0; i < 4; i++) { + bool is_40, is_sgi, is_sp; + int phy; + + if (!rates[i].count || (rates[i].idx < 0)) + continue; + + rix = rates[i].idx; + info->rates[i].Tries = rates[i].count; + + if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) { + info->rates[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS; + info->flags |= ATH9K_TXDESC_RTSENA; + } else if (rates[i].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { + info->rates[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS; + info->flags |= ATH9K_TXDESC_CTSENA; + } + + if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + info->rates[i].RateFlags |= ATH9K_RATESERIES_2040; + if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI) + info->rates[i].RateFlags |= ATH9K_RATESERIES_HALFGI; + + is_sgi = !!(rates[i].flags & IEEE80211_TX_RC_SHORT_GI); + is_40 = !!(rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH); + is_sp = !!(rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE); + + if (rates[i].flags & IEEE80211_TX_RC_MCS) { + /* MCS rates */ + info->rates[i].Rate = rix | 0x80; + info->rates[i].ChSel = ath_txchainmask_reduction(sc, + ah->txchainmask, info->rates[i].Rate); + info->rates[i].PktDuration = ath_pkt_duration(sc, rix, len, + is_40, is_sgi, is_sp); + if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC)) + info->rates[i].RateFlags |= ATH9K_RATESERIES_STBC; + continue; + } + + /* legacy rates */ + if ((tx_info->band == IEEE80211_BAND_2GHZ) && + !(rate->flags & IEEE80211_RATE_ERP_G)) + phy = WLAN_RC_PHY_CCK; + else + phy = WLAN_RC_PHY_OFDM; + + rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx]; + info->rates[i].Rate = rate->hw_value; + if (rate->hw_value_short) { + if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) + info->rates[i].Rate |= rate->hw_value_short; + } else { + is_sp = false; + } + + if (bf->bf_state.bfs_paprd) + info->rates[i].ChSel = ah->txchainmask; + else + info->rates[i].ChSel = ath_txchainmask_reduction(sc, + ah->txchainmask, info->rates[i].Rate); + + info->rates[i].PktDuration = ath9k_hw_computetxtime(sc->sc_ah, + phy, rate->bitrate * 100, len, rix, is_sp); + } + + /* For AR5416 - RTS cannot be followed by a frame larger than 8K */ + if (bf_isaggr(bf) && (len > sc->sc_ah->caps.rts_aggr_limit)) + info->flags &= ~ATH9K_TXDESC_RTSENA; + + /* ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive. */ + if (info->flags & ATH9K_TXDESC_RTSENA) + info->flags &= ~ATH9K_TXDESC_CTSENA; +} + +static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr; + enum ath9k_pkt_type htype; + __le16 fc; + + hdr = (struct ieee80211_hdr *)skb->data; + fc = hdr->frame_control; + + if (ieee80211_is_beacon(fc)) + htype = ATH9K_PKT_TYPE_BEACON; + else if (ieee80211_is_probe_resp(fc)) + htype = ATH9K_PKT_TYPE_PROBE_RESP; + else if (ieee80211_is_atim(fc)) + htype = ATH9K_PKT_TYPE_ATIM; + else if (ieee80211_is_pspoll(fc)) + htype = ATH9K_PKT_TYPE_PSPOLL; + else + htype = ATH9K_PKT_TYPE_NORMAL; + + return htype; +} + +static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, + struct ath_txq *txq, int len) +{ + struct ath_hw *ah = sc->sc_ah; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); + struct ath_buf *bf_first = bf; + struct ath_tx_info info; + bool aggr = !!(bf->bf_state.bf_type & BUF_AGGR); + + memset(&info, 0, sizeof(info)); + info.is_first = true; + info.is_last = true; + info.txpower = MAX_RATE_POWER; + info.qcu = txq->axq_qnum; + + info.flags = ATH9K_TXDESC_INTREQ; + if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) + info.flags |= ATH9K_TXDESC_NOACK; + if (tx_info->flags & IEEE80211_TX_CTL_LDPC) + info.flags |= ATH9K_TXDESC_LDPC; + + ath_buf_set_rate(sc, bf, &info, len); + + if (tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) + info.flags |= ATH9K_TXDESC_CLRDMASK; + + if (bf->bf_state.bfs_paprd) + info.flags |= (u32) bf->bf_state.bfs_paprd << ATH9K_TXDESC_PAPRD_S; + + + while (bf) { + struct sk_buff *skb = bf->bf_mpdu; + struct ath_frame_info *fi = get_frame_info(skb); + struct ieee80211_hdr *hdr; + int padpos, padsize; + + info.type = get_hw_packet_type(skb); + if (bf->bf_next) + info.link = bf->bf_next->bf_daddr; + else + info.link = 0; + + if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { + hdr = (struct ieee80211_hdr *)skb->data; + padpos = ath9k_cmn_padpos(hdr->frame_control); + padsize = padpos & 3; + + info.buf_addr[0] = bf->bf_buf_addr; + info.buf_len[0] = padpos + padsize; + info.buf_addr[1] = info.buf_addr[0] + padpos; + info.buf_len[1] = skb->len - padpos; + } else { + info.buf_addr[0] = bf->bf_buf_addr; + info.buf_len[0] = skb->len; + } + + info.pkt_len = fi->framelen; + info.keyix = fi->keyix; + info.keytype = fi->keytype; + + if (aggr) { + if (bf == bf_first) + info.aggr = AGGR_BUF_FIRST; + else if (!bf->bf_next) + info.aggr = AGGR_BUF_LAST; + else + info.aggr = AGGR_BUF_MIDDLE; + + info.ndelim = bf->bf_state.ndelim; + info.aggr_len = len; + } + + ath9k_hw_set_txdesc(ah, bf->bf_desc, &info); + bf = bf->bf_next; + } +} + static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, struct ath_atx_tid *tid) { struct ath_buf *bf; enum ATH_AGGR_STATUS status; - struct ath_frame_info *fi; + struct ieee80211_tx_info *tx_info; struct list_head bf_q; int aggr_len; @@ -877,34 +1087,25 @@ static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, bf = list_first_entry(&bf_q, struct ath_buf, list); bf->bf_lastbf = list_entry(bf_q.prev, struct ath_buf, list); + tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); if (tid->ac->clear_ps_filter) { tid->ac->clear_ps_filter = false; - ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, true); + tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; + } else { + tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT; } /* if only one frame, send as non-aggregate */ if (bf == bf->bf_lastbf) { - fi = get_frame_info(bf->bf_mpdu); - - bf->bf_state.bf_type &= ~BUF_AGGR; - ath9k_hw_clr11n_aggr(sc->sc_ah, bf->bf_desc); - ath_buf_set_rate(sc, bf, fi->framelen); - ath_tx_txqaddbuf(sc, txq, &bf_q, false); - continue; + aggr_len = get_frame_info(bf->bf_mpdu)->framelen; + bf->bf_state.bf_type = BUF_AMPDU; + } else { + TX_STAT_INC(txq->axq_qnum, a_aggr); } - /* setup first desc of aggregate */ - bf->bf_state.bf_type |= BUF_AGGR; - ath_buf_set_rate(sc, bf, aggr_len); - ath9k_hw_set11n_aggr_first(sc->sc_ah, bf->bf_desc, aggr_len); - - /* anchor last desc of aggregate */ - ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc); - + ath_tx_fill_desc(sc, bf, txq, aggr_len); ath_tx_txqaddbuf(sc, txq, &bf_q, false); - TX_STAT_INC(txq->axq_qnum, a_aggr); - } while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH && status != ATH_AGGR_BAW_CLOSED); } @@ -1332,7 +1533,7 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) struct ath_atx_ac *ac, *ac_tmp, *last_ac; struct ath_atx_tid *tid, *last_tid; - if (list_empty(&txq->axq_acq) || + if (work_pending(&sc->hw_reset_work) || list_empty(&txq->axq_acq) || txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) return; @@ -1482,7 +1683,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, if (!bf) return; - bf->bf_state.bf_type |= BUF_AMPDU; + bf->bf_state.bf_type = BUF_AMPDU; INIT_LIST_HEAD(&bf_head); list_add(&bf->list, &bf_head); @@ -1492,7 +1693,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, /* Queue to h/w without aggregation */ TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw); bf->bf_lastbf = bf; - ath_buf_set_rate(sc, bf, fi->framelen); + ath_tx_fill_desc(sc, bf, txctl->txq, fi->framelen); ath_tx_txqaddbuf(sc, txctl->txq, &bf_head, false); } @@ -1512,41 +1713,18 @@ static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq, INIT_LIST_HEAD(&bf_head); list_add_tail(&bf->list, &bf_head); - bf->bf_state.bf_type &= ~BUF_AMPDU; + bf->bf_state.bf_type = 0; /* update starting sequence number for subsequent ADDBA request */ if (tid) INCR(tid->seq_start, IEEE80211_SEQ_MAX); bf->bf_lastbf = bf; - ath_buf_set_rate(sc, bf, fi->framelen); + ath_tx_fill_desc(sc, bf, txq, fi->framelen); ath_tx_txqaddbuf(sc, txq, &bf_head, false); TX_STAT_INC(txq->axq_qnum, queued); } -static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb) -{ - struct ieee80211_hdr *hdr; - enum ath9k_pkt_type htype; - __le16 fc; - - hdr = (struct ieee80211_hdr *)skb->data; - fc = hdr->frame_control; - - if (ieee80211_is_beacon(fc)) - htype = ATH9K_PKT_TYPE_BEACON; - else if (ieee80211_is_probe_resp(fc)) - htype = ATH9K_PKT_TYPE_PROBE_RESP; - else if (ieee80211_is_atim(fc)) - htype = ATH9K_PKT_TYPE_ATIM; - else if (ieee80211_is_pspoll(fc)) - htype = ATH9K_PKT_TYPE_PSPOLL; - else - htype = ATH9K_PKT_TYPE_NORMAL; - - return htype; -} - static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb, int framelen) { @@ -1574,51 +1752,6 @@ static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb, fi->framelen = framelen; } -static int setup_tx_flags(struct sk_buff *skb) -{ - struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); - int flags = 0; - - flags |= ATH9K_TXDESC_INTREQ; - - if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) - flags |= ATH9K_TXDESC_NOACK; - - if (tx_info->flags & IEEE80211_TX_CTL_LDPC) - flags |= ATH9K_TXDESC_LDPC; - - return flags; -} - -/* - * rix - rate index - * pktlen - total bytes (delims + data + fcs + pads + pad delims) - * width - 0 for 20 MHz, 1 for 40 MHz - * half_gi - to use 4us v/s 3.6 us for symbol time - */ -static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen, - int width, int half_gi, bool shortPreamble) -{ - u32 nbits, nsymbits, duration, nsymbols; - int streams; - - /* find number of symbols: PLCP + data */ - streams = HT_RC_2_STREAMS(rix); - nbits = (pktlen << 3) + OFDM_PLCP_BITS; - nsymbits = bits_per_symbol[rix % 8][width] * streams; - nsymbols = (nbits + nsymbits - 1) / nsymbits; - - if (!half_gi) - duration = SYMBOL_TIME(nsymbols); - else - duration = SYMBOL_TIME_HALFGI(nsymbols); - - /* addup duration for legacy/ht training and signal fields */ - duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams); - - return duration; -} - u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate) { struct ath_hw *ah = sc->sc_ah; @@ -1631,118 +1764,6 @@ u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate) return chainmask; } -static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len) -{ - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath9k_11n_rate_series series[4]; - struct sk_buff *skb; - struct ieee80211_tx_info *tx_info; - struct ieee80211_tx_rate *rates; - const struct ieee80211_rate *rate; - struct ieee80211_hdr *hdr; - int i, flags = 0; - u8 rix = 0, ctsrate = 0; - bool is_pspoll; - - memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4); - - skb = bf->bf_mpdu; - tx_info = IEEE80211_SKB_CB(skb); - rates = tx_info->control.rates; - hdr = (struct ieee80211_hdr *)skb->data; - is_pspoll = ieee80211_is_pspoll(hdr->frame_control); - - /* - * We check if Short Preamble is needed for the CTS rate by - * checking the BSS's global flag. - * But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used. - */ - rate = ieee80211_get_rts_cts_rate(sc->hw, tx_info); - ctsrate = rate->hw_value; - if (sc->sc_flags & SC_OP_PREAMBLE_SHORT) - ctsrate |= rate->hw_value_short; - - for (i = 0; i < 4; i++) { - bool is_40, is_sgi, is_sp; - int phy; - - if (!rates[i].count || (rates[i].idx < 0)) - continue; - - rix = rates[i].idx; - series[i].Tries = rates[i].count; - - if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) { - series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS; - flags |= ATH9K_TXDESC_RTSENA; - } else if (rates[i].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { - series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS; - flags |= ATH9K_TXDESC_CTSENA; - } - - if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) - series[i].RateFlags |= ATH9K_RATESERIES_2040; - if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI) - series[i].RateFlags |= ATH9K_RATESERIES_HALFGI; - - is_sgi = !!(rates[i].flags & IEEE80211_TX_RC_SHORT_GI); - is_40 = !!(rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH); - is_sp = !!(rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE); - - if (rates[i].flags & IEEE80211_TX_RC_MCS) { - /* MCS rates */ - series[i].Rate = rix | 0x80; - series[i].ChSel = ath_txchainmask_reduction(sc, - common->tx_chainmask, series[i].Rate); - series[i].PktDuration = ath_pkt_duration(sc, rix, len, - is_40, is_sgi, is_sp); - if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC)) - series[i].RateFlags |= ATH9K_RATESERIES_STBC; - continue; - } - - /* legacy rates */ - if ((tx_info->band == IEEE80211_BAND_2GHZ) && - !(rate->flags & IEEE80211_RATE_ERP_G)) - phy = WLAN_RC_PHY_CCK; - else - phy = WLAN_RC_PHY_OFDM; - - rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx]; - series[i].Rate = rate->hw_value; - if (rate->hw_value_short) { - if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) - series[i].Rate |= rate->hw_value_short; - } else { - is_sp = false; - } - - if (bf->bf_state.bfs_paprd) - series[i].ChSel = common->tx_chainmask; - else - series[i].ChSel = ath_txchainmask_reduction(sc, - common->tx_chainmask, series[i].Rate); - - series[i].PktDuration = ath9k_hw_computetxtime(sc->sc_ah, - phy, rate->bitrate * 100, len, rix, is_sp); - } - - /* For AR5416 - RTS cannot be followed by a frame larger than 8K */ - if (bf_isaggr(bf) && (len > sc->sc_ah->caps.rts_aggr_limit)) - flags &= ~ATH9K_TXDESC_RTSENA; - - /* ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive. */ - if (flags & ATH9K_TXDESC_RTSENA) - flags &= ~ATH9K_TXDESC_CTSENA; - - /* set dur_update_en for l-sig computation except for PS-Poll frames */ - ath9k_hw_set11n_ratescenario(sc->sc_ah, bf->bf_desc, - bf->bf_lastbf->bf_desc, - !is_pspoll, ctsrate, - 0, series, 4, flags); - -} - /* * Assign a descriptor (and sequence number if necessary, * and map buffer for DMA. Frees skb on error @@ -1752,13 +1773,10 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, struct ath_atx_tid *tid, struct sk_buff *skb) { - struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_frame_info *fi = get_frame_info(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ath_buf *bf; - struct ath_desc *ds; - int frm_type; u16 seqno; bf = ath_tx_get_buffer(sc); @@ -1776,7 +1794,6 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, bf->bf_state.seqno = seqno; } - bf->bf_flags = setup_tx_flags(skb); bf->bf_mpdu = skb; bf->bf_buf_addr = dma_map_single(sc->dev, skb->data, @@ -1790,22 +1807,6 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, goto error; } - frm_type = get_hw_packet_type(skb); - - ds = bf->bf_desc; - ath9k_hw_set_desc_link(ah, ds, 0); - - ath9k_hw_set11n_txdesc(ah, ds, fi->framelen, frm_type, MAX_RATE_POWER, - fi->keyix, fi->keytype, bf->bf_flags); - - ath9k_hw_filltxdesc(ah, ds, - skb->len, /* segment length */ - true, /* first segment */ - true, /* last segment */ - ds, /* first descriptor */ - bf->bf_buf_addr, - txq->axq_qnum); - fi->bf = bf; return bf; @@ -1848,16 +1849,9 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct sk_buff *skb, bf->bf_state.bfs_paprd = txctl->paprd; - if (bf->bf_state.bfs_paprd) - ar9003_hw_set_paprd_txdesc(sc->sc_ah, bf->bf_desc, - bf->bf_state.bfs_paprd); - if (txctl->paprd) bf->bf_state.bfs_paprd_timestamp = jiffies; - if (tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) - ath9k_hw_set_clrdmask(sc->sc_ah, bf->bf_desc, true); - ath_tx_send_normal(sc, txctl->txq, tid, skb); } @@ -1898,15 +1892,17 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); } - /* Add the padding after the header if this is not already done */ - padpos = ath9k_cmn_padpos(hdr->frame_control); - padsize = padpos & 3; - if (padsize && skb->len > padpos) { - if (skb_headroom(skb) < padsize) - return -ENOMEM; + if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) { + /* Add the padding after the header if this is not already done */ + padpos = ath9k_cmn_padpos(hdr->frame_control); + padsize = padpos & 3; + if (padsize && skb->len > padpos) { + if (skb_headroom(skb) < padsize) + return -ENOMEM; - skb_push(skb, padsize); - memmove(skb->data, skb->data + padsize, padpos); + skb_push(skb, padsize); + memmove(skb->data, skb->data + padsize, padpos); + } } if ((vif && vif->type != NL80211_IFTYPE_AP && @@ -1952,20 +1948,21 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, if (tx_flags & ATH_TX_BAR) tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; - if (!(tx_flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) { + if (!(tx_flags & ATH_TX_ERROR)) /* Frame was ACKed */ tx_info->flags |= IEEE80211_TX_STAT_ACK; - } - padpos = ath9k_cmn_padpos(hdr->frame_control); - padsize = padpos & 3; - if (padsize && skb->len>padpos+padsize) { - /* - * Remove MAC header padding before giving the frame back to - * mac80211. - */ - memmove(skb->data + padsize, skb->data, padpos); - skb_pull(skb, padsize); + if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) { + padpos = ath9k_cmn_padpos(hdr->frame_control); + padsize = padpos & 3; + if (padsize && skb->len>padpos+padsize) { + /* + * Remove MAC header padding before giving the frame back to + * mac80211. + */ + memmove(skb->data + padsize, skb->data, padpos); + skb_pull(skb, padsize); + } } if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) { @@ -1999,18 +1996,18 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, struct ath_tx_status *ts, int txok, int sendbar) { struct sk_buff *skb = bf->bf_mpdu; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); unsigned long flags; int tx_flags = 0; if (sendbar) tx_flags = ATH_TX_BAR; - if (!txok) { + if (!txok) tx_flags |= ATH_TX_ERROR; - if (bf_isxretried(bf)) - tx_flags |= ATH_TX_XRETRY; - } + if (ts->ts_status & ATH9K_TXERR_FILT) + tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED; dma_unmap_single(sc->dev, bf->bf_buf_addr, skb->len, DMA_TO_DEVICE); bf->bf_buf_addr = 0; @@ -2023,7 +2020,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, else complete(&sc->paprd_complete); } else { - ath_debug_stat_tx(sc, bf, ts, txq); + ath_debug_stat_tx(sc, bf, ts, txq, tx_flags); ath_tx_complete(sc, skb, tx_flags, txq); } /* At this point, skb (bf->bf_mpdu) is consumed...make sure we don't @@ -2041,7 +2038,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, struct ath_tx_status *ts, int nframes, int nbad, - int txok, bool update_rc) + int txok) { struct sk_buff *skb = bf->bf_mpdu; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; @@ -2056,9 +2053,7 @@ static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, tx_rateindex = ts->ts_rateindex; WARN_ON(tx_rateindex >= hw->max_rates); - if (ts->ts_status & ATH9K_TXERR_FILT) - tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED; - if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && update_rc) { + if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { tx_info->flags |= IEEE80211_TX_STAT_AMPDU; BUG_ON(nbad > nframes); @@ -2068,7 +2063,7 @@ static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, } if ((ts->ts_status & ATH9K_TXERR_FILT) == 0 && - (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0 && update_rc) { + (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) == 0) { /* * If an underrun error is seen assume it as an excessive * retry only if max frame trigger level has been reached @@ -2081,9 +2076,9 @@ static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, * successfully by eventually preferring slower rates. * This itself should also alleviate congestion on the bus. */ - if (ieee80211_is_data(hdr->frame_control) && - (ts->ts_flags & (ATH9K_TX_DATA_UNDERRUN | - ATH9K_TX_DELIM_UNDERRUN)) && + if (unlikely(ts->ts_flags & (ATH9K_TX_DATA_UNDERRUN | + ATH9K_TX_DELIM_UNDERRUN)) && + ieee80211_is_data(hdr->frame_control) && ah->tx_trig_level >= sc->sc_ah->config.max_txtrig_level) tx_info->status.rates[tx_rateindex].count = hw->max_rate_tries; @@ -2114,13 +2109,7 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq, spin_unlock_bh(&txq->axq_lock); if (!bf_isampdu(bf)) { - /* - * This frame is sent out as a single frame. - * Use hardware retry status for this frame. - */ - if (ts->ts_status & ATH9K_TXERR_XRETRY) - bf->bf_state.bf_type |= BUF_XRETRY; - ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok, true); + ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok); ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok, 0); } else ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true); @@ -2147,6 +2136,9 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) spin_lock_bh(&txq->axq_lock); for (;;) { + if (work_pending(&sc->hw_reset_work)) + break; + if (list_empty(&txq->axq_q)) { txq->axq_link = NULL; if (sc->sc_flags & SC_OP_TXAGGR) @@ -2234,9 +2226,7 @@ static void ath_tx_complete_poll_work(struct work_struct *work) if (needreset) { ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET, "tx hung, resetting the chip\n"); - spin_lock_bh(&sc->sc_pcu_lock); - ath_reset(sc, true); - spin_unlock_bh(&sc->sc_pcu_lock); + ieee80211_queue_work(sc->hw, &sc->hw_reset_work); } ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, @@ -2269,6 +2259,9 @@ void ath_tx_edma_tasklet(struct ath_softc *sc) int status; for (;;) { + if (work_pending(&sc->hw_reset_work)) + break; + status = ath9k_hw_txprocdesc(ah, NULL, (void *)&ts); if (status == -EINPROGRESS) break; |