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path: root/drivers/net/wireless/ath/ath9k/xmit.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/xmit.c607
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;