diff options
Diffstat (limited to 'drivers/net/wireless/ath/wcn36xx/txrx.c')
-rw-r--r-- | drivers/net/wireless/ath/wcn36xx/txrx.c | 279 |
1 files changed, 257 insertions, 22 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/txrx.c b/drivers/net/wireless/ath/wcn36xx/txrx.c index a6902371e89c..1b831157ede1 100644 --- a/drivers/net/wireless/ath/wcn36xx/txrx.c +++ b/drivers/net/wireless/ath/wcn36xx/txrx.c @@ -23,11 +23,214 @@ static inline int get_rssi0(struct wcn36xx_rx_bd *bd) return 100 - ((bd->phy_stat0 >> 24) & 0xff); } +struct wcn36xx_rate { + u16 bitrate; + u16 mcs_or_legacy_index; + enum mac80211_rx_encoding encoding; + enum mac80211_rx_encoding_flags encoding_flags; + enum rate_info_bw bw; +}; + +static const struct wcn36xx_rate wcn36xx_rate_table[] = { + /* 11b rates */ + { 10, 0, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 20, 1, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 55, 2, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 110, 3, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + + /* 11b SP (short preamble) */ + { 10, 0, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, + { 20, 1, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, + { 55, 2, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, + { 110, 3, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, + + /* 11ag */ + { 60, 4, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 90, 5, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 120, 6, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 180, 7, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 240, 8, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 360, 9, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 480, 10, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + { 540, 11, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, + + /* 11n */ + { 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + + /* 11n SGI */ + { 72, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 144, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 217, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 289, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 434, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 578, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 650, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + + /* 11n GF (greenfield) */ + { 65, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 130, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 195, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 260, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 390, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 520, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 585, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + { 650, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, + + /* 11n CB (channel bonding) */ + { 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + + /* 11n CB + SGI */ + { 150, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 300, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 450, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 600, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 900, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11n GF + CB */ + { 135, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 270, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 405, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 540, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 810, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 1080, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 1215, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + { 1350, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, + + /* 11ac reserved indices */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 20 MHz 800ns GI MCS 0-8 */ + { 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + { 780, 8, RX_ENC_HT, 0, RATE_INFO_BW_20 }, + + /* 11ac reserved indices */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 20 MHz 400ns SGI MCS 6-8 */ + { 655, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + { 866, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, + + /* 11ac reserved indices */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 40 MHz 800ns GI MCS 0-9 */ + { 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1620, 8, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + { 1800, 9, RX_ENC_HT, 0, RATE_INFO_BW_40 }, + + /* 11ac reserved indices */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 40 MHz 400ns SGI MCS 5-7 */ + { 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac reserved index */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 40 MHz 400ns SGI MCS 5-7 */ + { 1800, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 2000, 9, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac reserved index */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 80 MHz 800ns GI MCS 0-7 */ + { 292, 0, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 585, 1, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 877, 2, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 1170, 3, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 1755, 4, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 2340, 5, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 2632, 6, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 2925, 7, RX_ENC_HT, 0, RATE_INFO_BW_80}, + + /* 11 ac reserved index */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 80 MHz 800 ns GI MCS 8-9 */ + { 3510, 8, RX_ENC_HT, 0, RATE_INFO_BW_80}, + { 3900, 9, RX_ENC_HT, 0, RATE_INFO_BW_80}, + + /* 11 ac reserved indices */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 80 MHz 400 ns SGI MCS 6-7 */ + { 2925, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, + { 3250, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, + + /* 11ac reserved index */ + { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, + + /* 11ac 80 MHz 400ns SGI MCS 8-9 */ + { 3900, 8, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, + { 4333, 9, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, +}; + int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb) { struct ieee80211_rx_status status; + const struct wcn36xx_rate *rate; struct ieee80211_hdr *hdr; struct wcn36xx_rx_bd *bd; + struct ieee80211_supported_band *sband; u16 fc, sn; /* @@ -49,19 +252,11 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb) fc = __le16_to_cpu(hdr->frame_control); sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)); - /* When scanning associate beacons to this */ - if (ieee80211_is_beacon(hdr->frame_control) && wcn->scan_freq) { - status.freq = wcn->scan_freq; - status.band = wcn->scan_band; - } else { - status.freq = WCN36XX_CENTER_FREQ(wcn); - status.band = WCN36XX_BAND(wcn); - } - + status.freq = WCN36XX_CENTER_FREQ(wcn); + status.band = WCN36XX_BAND(wcn); status.mactime = 10; status.signal = -get_rssi0(bd); status.antenna = 1; - status.rate_idx = 1; status.flag = 0; status.rx_flags = 0; status.flag |= RX_FLAG_IV_STRIPPED | @@ -70,6 +265,28 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb) wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag); + if (bd->rate_id < ARRAY_SIZE(wcn36xx_rate_table)) { + rate = &wcn36xx_rate_table[bd->rate_id]; + status.encoding = rate->encoding; + status.enc_flags = rate->encoding_flags; + status.bw = rate->bw; + status.rate_idx = rate->mcs_or_legacy_index; + sband = wcn->hw->wiphy->bands[status.band]; + status.nss = 1; + + if (status.band == NL80211_BAND_5GHZ && + status.encoding == RX_ENC_LEGACY && + status.rate_idx >= sband->n_bitrates) { + /* no dsss rates in 5Ghz rates table */ + status.rate_idx -= 4; + } + } else { + status.encoding = 0; + status.bw = 0; + status.enc_flags = 0; + status.rate_idx = 0; + } + memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); if (ieee80211_is_beacon(hdr->frame_control)) { @@ -100,7 +317,8 @@ static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd, bd->pdu.mpdu_header_off; bd->pdu.mpdu_len = len; bd->pdu.tid = tid; - bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_QOS; + /* Use seq number generated by mac80211 */ + bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_HOST; } static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn, @@ -160,9 +378,11 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd, bool bcast) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_vif *vif = NULL; struct wcn36xx_vif *__vif_priv = NULL; - bool is_data_qos; + bool is_data_qos = ieee80211_is_data_qos(hdr->frame_control); + u16 tid = 0; bd->bd_rate = WCN36XX_BD_RATE_DATA; @@ -191,9 +411,21 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd, bd->dpu_sign = __vif_priv->self_ucast_dpu_sign; } - if (ieee80211_is_nullfunc(hdr->frame_control) || - (sta_priv && !sta_priv->is_data_encrypted)) + if (is_data_qos) { + tid = ieee80211_get_tid(hdr); + /* TID->QID is one-to-one mapping */ + bd->queue_id = tid; + } + + if (info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT || + (sta_priv && !sta_priv->is_data_encrypted)) { bd->dpu_ne = 1; + } + + if (ieee80211_is_any_nullfunc(hdr->frame_control)) { + /* Don't use a regular queue for null packet (no ampdu) */ + bd->queue_id = WCN36XX_TX_U_WQ_ID; + } if (bcast) { bd->ub = 1; @@ -201,13 +433,11 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd, } *vif_priv = __vif_priv; - is_data_qos = ieee80211_is_data_qos(hdr->frame_control); - wcn36xx_set_tx_pdu(bd, is_data_qos ? sizeof(struct ieee80211_qos_hdr) : sizeof(struct ieee80211_hdr_3addr), - skb->len, sta_priv ? sta_priv->tid : 0); + skb->len, tid); if (sta_priv && is_data_qos) wcn36xx_tx_start_ampdu(wcn, sta_priv, skb); @@ -287,9 +517,9 @@ int wcn36xx_start_tx(struct wcn36xx *wcn, bd.dpu_rf = WCN36XX_BMU_WQ_TX; - bd.tx_comp = !!(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS); - if (bd.tx_comp) { + if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) { wcn36xx_dbg(WCN36XX_DBG_DXE, "TX_ACK status requested\n"); + spin_lock_irqsave(&wcn->dxe_lock, flags); if (wcn->tx_ack_skb) { spin_unlock_irqrestore(&wcn->dxe_lock, flags); @@ -302,10 +532,15 @@ int wcn36xx_start_tx(struct wcn36xx *wcn, /* Only one at a time is supported by fw. Stop the TX queues * until the ack status gets back. - * - * TODO: Add watchdog in case FW does not answer */ ieee80211_stop_queues(wcn->hw); + + /* TX watchdog if no TX irq or ack indication received */ + mod_timer(&wcn->tx_ack_timer, jiffies + HZ / 10); + + /* Request ack indication from the firmware */ + if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) + bd.tx_comp = 1; } /* Data frames served first*/ @@ -319,7 +554,7 @@ int wcn36xx_start_tx(struct wcn36xx *wcn, bd.tx_bd_sign = 0xbdbdbdbd; ret = wcn36xx_dxe_tx_frame(wcn, vif_priv, &bd, skb, is_low); - if (ret && bd.tx_comp) { + if (ret && (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)) { /* If the skb has not been transmitted, * don't keep a reference to it. */ |