diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtlwifi/rtl8192d/trx_common.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtlwifi/rtl8192d/trx_common.c | 516 |
1 files changed, 516 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192d/trx_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192d/trx_common.c new file mode 100644 index 000000000000..72d2b7426d82 --- /dev/null +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192d/trx_common.c @@ -0,0 +1,516 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2009-2012 Realtek Corporation.*/ + +#include "../wifi.h" +#include "../base.h" +#include "../stats.h" +#include "def.h" +#include "trx_common.h" + +static long _rtl92de_translate_todbm(struct ieee80211_hw *hw, + u8 signal_strength_index) +{ + long signal_power; + + signal_power = (long)((signal_strength_index + 1) >> 1); + signal_power -= 95; + return signal_power; +} + +static void _rtl92de_query_rxphystatus(struct ieee80211_hw *hw, + struct rtl_stats *pstats, + __le32 *pdesc, + struct rx_fwinfo_92d *p_drvinfo, + bool packet_match_bssid, + bool packet_toself, + bool packet_beacon) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &rtlpriv->phy; + struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv); + struct phy_sts_cck_8192d *cck_buf; + s8 rx_pwr_all, rx_pwr[4]; + u8 rf_rx_num = 0, evm, pwdb_all; + u8 i, max_spatial_stream; + u32 rssi, total_rssi = 0; + bool is_cck_rate; + u8 rxmcs; + + rxmcs = get_rx_desc_rxmcs(pdesc); + is_cck_rate = rxmcs <= DESC_RATE11M; + pstats->packet_matchbssid = packet_match_bssid; + pstats->packet_toself = packet_toself; + pstats->packet_beacon = packet_beacon; + pstats->is_cck = is_cck_rate; + pstats->rx_mimo_sig_qual[0] = -1; + pstats->rx_mimo_sig_qual[1] = -1; + + if (is_cck_rate) { + u8 report, cck_highpwr; + + cck_buf = (struct phy_sts_cck_8192d *)p_drvinfo; + if (ppsc->rfpwr_state == ERFON) + cck_highpwr = rtlphy->cck_high_power; + else + cck_highpwr = false; + if (!cck_highpwr) { + u8 cck_agc_rpt = cck_buf->cck_agc_rpt; + + report = cck_buf->cck_agc_rpt & 0xc0; + report = report >> 6; + switch (report) { + case 0x3: + rx_pwr_all = -46 - (cck_agc_rpt & 0x3e); + break; + case 0x2: + rx_pwr_all = -26 - (cck_agc_rpt & 0x3e); + break; + case 0x1: + rx_pwr_all = -12 - (cck_agc_rpt & 0x3e); + break; + case 0x0: + rx_pwr_all = 16 - (cck_agc_rpt & 0x3e); + break; + } + } else { + u8 cck_agc_rpt = cck_buf->cck_agc_rpt; + + report = p_drvinfo->cfosho[0] & 0x60; + report = report >> 5; + switch (report) { + case 0x3: + rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1); + break; + case 0x2: + rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1); + break; + case 0x1: + rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1); + break; + case 0x0: + rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1); + break; + } + } + pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all); + /* CCK gain is smaller than OFDM/MCS gain, */ + /* so we add gain diff by experiences, the val is 6 */ + pwdb_all += 6; + if (pwdb_all > 100) + pwdb_all = 100; + /* modify the offset to make the same gain index with OFDM. */ + if (pwdb_all > 34 && pwdb_all <= 42) + pwdb_all -= 2; + else if (pwdb_all > 26 && pwdb_all <= 34) + pwdb_all -= 6; + else if (pwdb_all > 14 && pwdb_all <= 26) + pwdb_all -= 8; + else if (pwdb_all > 4 && pwdb_all <= 14) + pwdb_all -= 4; + pstats->rx_pwdb_all = pwdb_all; + pstats->recvsignalpower = rx_pwr_all; + if (packet_match_bssid) { + u8 sq; + + if (pstats->rx_pwdb_all > 40) { + sq = 100; + } else { + sq = cck_buf->sq_rpt; + if (sq > 64) + sq = 0; + else if (sq < 20) + sq = 100; + else + sq = ((64 - sq) * 100) / 44; + } + pstats->signalquality = sq; + pstats->rx_mimo_sig_qual[0] = sq; + pstats->rx_mimo_sig_qual[1] = -1; + } + } else { + rtlpriv->dm.rfpath_rxenable[0] = true; + rtlpriv->dm.rfpath_rxenable[1] = true; + for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) { + if (rtlpriv->dm.rfpath_rxenable[i]) + rf_rx_num++; + rx_pwr[i] = ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) + - 110; + rssi = rtl_query_rxpwrpercentage(rx_pwr[i]); + total_rssi += rssi; + rtlpriv->stats.rx_snr_db[i] = + (long)(p_drvinfo->rxsnr[i] / 2); + if (packet_match_bssid) + pstats->rx_mimo_signalstrength[i] = (u8)rssi; + } + rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 106; + pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all); + pstats->rx_pwdb_all = pwdb_all; + pstats->rxpower = rx_pwr_all; + pstats->recvsignalpower = rx_pwr_all; + if (get_rx_desc_rxht(pdesc) && rxmcs >= DESC_RATEMCS8 && + rxmcs <= DESC_RATEMCS15) + max_spatial_stream = 2; + else + max_spatial_stream = 1; + for (i = 0; i < max_spatial_stream; i++) { + evm = rtl_evm_db_to_percentage(p_drvinfo->rxevm[i]); + if (packet_match_bssid) { + if (i == 0) + pstats->signalquality = + (u8)(evm & 0xff); + pstats->rx_mimo_sig_qual[i] = + (u8)(evm & 0xff); + } + } + } + if (is_cck_rate) + pstats->signalstrength = (u8)(rtl_signal_scale_mapping(hw, + pwdb_all)); + else if (rf_rx_num != 0) + pstats->signalstrength = (u8)(rtl_signal_scale_mapping(hw, + total_rssi /= rf_rx_num)); +} + +static void rtl92d_loop_over_paths(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &rtlpriv->phy; + u8 rfpath; + + for (rfpath = RF90_PATH_A; rfpath < rtlphy->num_total_rfpath; + rfpath++) { + if (rtlpriv->stats.rx_rssi_percentage[rfpath] == 0) { + rtlpriv->stats.rx_rssi_percentage[rfpath] = + pstats->rx_mimo_signalstrength[rfpath]; + } + if (pstats->rx_mimo_signalstrength[rfpath] > + rtlpriv->stats.rx_rssi_percentage[rfpath]) { + rtlpriv->stats.rx_rssi_percentage[rfpath] = + ((rtlpriv->stats.rx_rssi_percentage[rfpath] * + (RX_SMOOTH_FACTOR - 1)) + + (pstats->rx_mimo_signalstrength[rfpath])) / + (RX_SMOOTH_FACTOR); + rtlpriv->stats.rx_rssi_percentage[rfpath] = + rtlpriv->stats.rx_rssi_percentage[rfpath] + 1; + } else { + rtlpriv->stats.rx_rssi_percentage[rfpath] = + ((rtlpriv->stats.rx_rssi_percentage[rfpath] * + (RX_SMOOTH_FACTOR - 1)) + + (pstats->rx_mimo_signalstrength[rfpath])) / + (RX_SMOOTH_FACTOR); + } + } +} + +static void _rtl92de_process_ui_rssi(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rt_smooth_data *ui_rssi; + u32 last_rssi, tmpval; + + if (!pstats->packet_toself && !pstats->packet_beacon) + return; + + ui_rssi = &rtlpriv->stats.ui_rssi; + + rtlpriv->stats.rssi_calculate_cnt++; + if (ui_rssi->total_num++ >= PHY_RSSI_SLID_WIN_MAX) { + ui_rssi->total_num = PHY_RSSI_SLID_WIN_MAX; + last_rssi = ui_rssi->elements[ui_rssi->index]; + ui_rssi->total_val -= last_rssi; + } + ui_rssi->total_val += pstats->signalstrength; + ui_rssi->elements[ui_rssi->index++] = pstats->signalstrength; + if (ui_rssi->index >= PHY_RSSI_SLID_WIN_MAX) + ui_rssi->index = 0; + tmpval = ui_rssi->total_val / ui_rssi->total_num; + rtlpriv->stats.signal_strength = _rtl92de_translate_todbm(hw, (u8)tmpval); + pstats->rssi = rtlpriv->stats.signal_strength; + + if (!pstats->is_cck && pstats->packet_toself) + rtl92d_loop_over_paths(hw, pstats); +} + +static void _rtl92de_update_rxsignalstatistics(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + int weighting = 0; + + if (rtlpriv->stats.recv_signal_power == 0) + rtlpriv->stats.recv_signal_power = pstats->recvsignalpower; + if (pstats->recvsignalpower > rtlpriv->stats.recv_signal_power) + weighting = 5; + else if (pstats->recvsignalpower < rtlpriv->stats.recv_signal_power) + weighting = (-5); + rtlpriv->stats.recv_signal_power = (rtlpriv->stats.recv_signal_power * + 5 + pstats->recvsignalpower + weighting) / 6; +} + +static void _rtl92de_process_pwdb(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + long undec_sm_pwdb; + + if (mac->opmode == NL80211_IFTYPE_ADHOC || + mac->opmode == NL80211_IFTYPE_AP) + return; + + undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb; + + if (pstats->packet_toself || pstats->packet_beacon) { + if (undec_sm_pwdb < 0) + undec_sm_pwdb = pstats->rx_pwdb_all; + if (pstats->rx_pwdb_all > (u32)undec_sm_pwdb) { + undec_sm_pwdb = (((undec_sm_pwdb) * + (RX_SMOOTH_FACTOR - 1)) + + (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR); + undec_sm_pwdb = undec_sm_pwdb + 1; + } else { + undec_sm_pwdb = (((undec_sm_pwdb) * + (RX_SMOOTH_FACTOR - 1)) + + (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR); + } + rtlpriv->dm.undec_sm_pwdb = undec_sm_pwdb; + _rtl92de_update_rxsignalstatistics(hw, pstats); + } +} + +static void rtl92d_loop_over_streams(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + int stream; + + for (stream = 0; stream < 2; stream++) { + if (pstats->rx_mimo_sig_qual[stream] != -1) { + if (rtlpriv->stats.rx_evm_percentage[stream] == 0) { + rtlpriv->stats.rx_evm_percentage[stream] = + pstats->rx_mimo_sig_qual[stream]; + } + rtlpriv->stats.rx_evm_percentage[stream] = + ((rtlpriv->stats.rx_evm_percentage[stream] + * (RX_SMOOTH_FACTOR - 1)) + + (pstats->rx_mimo_sig_qual[stream] * 1)) / + (RX_SMOOTH_FACTOR); + } + } +} + +static void _rtl92de_process_ui_link_quality(struct ieee80211_hw *hw, + struct rtl_stats *pstats) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rt_smooth_data *ui_link_quality; + u32 last_evm, tmpval; + + if (pstats->signalquality == 0) + return; + if (!pstats->packet_toself && !pstats->packet_beacon) + return; + + ui_link_quality = &rtlpriv->stats.ui_link_quality; + + if (ui_link_quality->total_num++ >= PHY_LINKQUALITY_SLID_WIN_MAX) { + ui_link_quality->total_num = PHY_LINKQUALITY_SLID_WIN_MAX; + last_evm = ui_link_quality->elements[ui_link_quality->index]; + ui_link_quality->total_val -= last_evm; + } + ui_link_quality->total_val += pstats->signalquality; + ui_link_quality->elements[ui_link_quality->index++] = pstats->signalquality; + if (ui_link_quality->index >= PHY_LINKQUALITY_SLID_WIN_MAX) + ui_link_quality->index = 0; + tmpval = ui_link_quality->total_val / ui_link_quality->total_num; + rtlpriv->stats.signal_quality = tmpval; + rtlpriv->stats.last_sigstrength_inpercent = tmpval; + rtl92d_loop_over_streams(hw, pstats); +} + +static void _rtl92de_process_phyinfo(struct ieee80211_hw *hw, + u8 *buffer, + struct rtl_stats *pcurrent_stats) +{ + if (!pcurrent_stats->packet_matchbssid && + !pcurrent_stats->packet_beacon) + return; + + _rtl92de_process_ui_rssi(hw, pcurrent_stats); + _rtl92de_process_pwdb(hw, pcurrent_stats); + _rtl92de_process_ui_link_quality(hw, pcurrent_stats); +} + +static void _rtl92de_translate_rx_signal_stuff(struct ieee80211_hw *hw, + struct sk_buff *skb, + struct rtl_stats *pstats, + __le32 *pdesc, + struct rx_fwinfo_92d *p_drvinfo) +{ + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + struct ieee80211_hdr *hdr; + bool packet_matchbssid; + bool packet_beacon; + bool packet_toself; + u16 type, cfc; + u8 *tmp_buf; + u8 *praddr; + __le16 fc; + + tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift; + hdr = (struct ieee80211_hdr *)tmp_buf; + fc = hdr->frame_control; + cfc = le16_to_cpu(fc); + type = WLAN_FC_GET_TYPE(fc); + praddr = hdr->addr1; + packet_matchbssid = ((type != IEEE80211_FTYPE_CTL) && + ether_addr_equal(mac->bssid, + (cfc & IEEE80211_FCTL_TODS) ? hdr->addr1 : + (cfc & IEEE80211_FCTL_FROMDS) ? hdr->addr2 : + hdr->addr3) && + (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv)); + packet_toself = packet_matchbssid && + ether_addr_equal(praddr, rtlefuse->dev_addr); + packet_beacon = ieee80211_is_beacon(fc); + _rtl92de_query_rxphystatus(hw, pstats, pdesc, p_drvinfo, + packet_matchbssid, packet_toself, + packet_beacon); + _rtl92de_process_phyinfo(hw, tmp_buf, pstats); +} + +bool rtl92de_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *stats, + struct ieee80211_rx_status *rx_status, + u8 *pdesc8, struct sk_buff *skb) +{ + __le32 *pdesc = (__le32 *)pdesc8; + struct rx_fwinfo_92d *p_drvinfo; + u32 phystatus = get_rx_desc_physt(pdesc); + + stats->length = (u16)get_rx_desc_pkt_len(pdesc); + stats->rx_drvinfo_size = (u8)get_rx_desc_drv_info_size(pdesc) * + RX_DRV_INFO_SIZE_UNIT; + stats->rx_bufshift = (u8)(get_rx_desc_shift(pdesc) & 0x03); + stats->icv = (u16)get_rx_desc_icv(pdesc); + stats->crc = (u16)get_rx_desc_crc32(pdesc); + stats->hwerror = (stats->crc | stats->icv); + stats->decrypted = !get_rx_desc_swdec(pdesc) && + get_rx_desc_enc_type(pdesc) != RX_DESC_ENC_NONE; + stats->rate = (u8)get_rx_desc_rxmcs(pdesc); + stats->shortpreamble = (u16)get_rx_desc_splcp(pdesc); + stats->isampdu = (bool)(get_rx_desc_paggr(pdesc) == 1); + stats->isfirst_ampdu = (bool)((get_rx_desc_paggr(pdesc) == 1) && + (get_rx_desc_faggr(pdesc) == 1)); + stats->timestamp_low = get_rx_desc_tsfl(pdesc); + stats->rx_is40mhzpacket = (bool)get_rx_desc_bw(pdesc); + stats->is_ht = (bool)get_rx_desc_rxht(pdesc); + rx_status->freq = hw->conf.chandef.chan->center_freq; + rx_status->band = hw->conf.chandef.chan->band; + if (get_rx_desc_crc32(pdesc)) + rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; + if (get_rx_desc_bw(pdesc)) + rx_status->bw = RATE_INFO_BW_40; + if (get_rx_desc_rxht(pdesc)) + rx_status->encoding = RX_ENC_HT; + rx_status->flag |= RX_FLAG_MACTIME_START; + if (stats->decrypted) + rx_status->flag |= RX_FLAG_DECRYPTED; + rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht, + false, stats->rate); + rx_status->mactime = get_rx_desc_tsfl(pdesc); + if (phystatus) { + p_drvinfo = (struct rx_fwinfo_92d *)(skb->data + + stats->rx_bufshift); + _rtl92de_translate_rx_signal_stuff(hw, skb, stats, pdesc, + p_drvinfo); + } + /*rx_status->qual = stats->signal; */ + rx_status->signal = stats->recvsignalpower + 10; + return true; +} +EXPORT_SYMBOL_GPL(rtl92de_rx_query_desc); + +void rtl92de_set_desc(struct ieee80211_hw *hw, u8 *pdesc8, bool istx, + u8 desc_name, u8 *val) +{ + __le32 *pdesc = (__le32 *)pdesc8; + + if (istx) { + switch (desc_name) { + case HW_DESC_OWN: + wmb(); + set_tx_desc_own(pdesc, 1); + break; + case HW_DESC_TX_NEXTDESC_ADDR: + set_tx_desc_next_desc_address(pdesc, *(u32 *)val); + break; + default: + WARN_ONCE(true, "rtl8192de: ERR txdesc :%d not processed\n", + desc_name); + break; + } + } else { + switch (desc_name) { + case HW_DESC_RXOWN: + wmb(); + set_rx_desc_own(pdesc, 1); + break; + case HW_DESC_RXBUFF_ADDR: + set_rx_desc_buff_addr(pdesc, *(u32 *)val); + break; + case HW_DESC_RXPKT_LEN: + set_rx_desc_pkt_len(pdesc, *(u32 *)val); + break; + case HW_DESC_RXERO: + set_rx_desc_eor(pdesc, 1); + break; + default: + WARN_ONCE(true, "rtl8192de: ERR rxdesc :%d not processed\n", + desc_name); + break; + } + } +} +EXPORT_SYMBOL_GPL(rtl92de_set_desc); + +u64 rtl92de_get_desc(struct ieee80211_hw *hw, + u8 *p_desc8, bool istx, u8 desc_name) +{ + __le32 *p_desc = (__le32 *)p_desc8; + u32 ret = 0; + + if (istx) { + switch (desc_name) { + case HW_DESC_OWN: + ret = get_tx_desc_own(p_desc); + break; + case HW_DESC_TXBUFF_ADDR: + ret = get_tx_desc_tx_buffer_address(p_desc); + break; + default: + WARN_ONCE(true, "rtl8192de: ERR txdesc :%d not processed\n", + desc_name); + break; + } + } else { + switch (desc_name) { + case HW_DESC_OWN: + ret = get_rx_desc_own(p_desc); + break; + case HW_DESC_RXPKT_LEN: + ret = get_rx_desc_pkt_len(p_desc); + break; + case HW_DESC_RXBUFF_ADDR: + ret = get_rx_desc_buff_addr(p_desc); + break; + default: + WARN_ONCE(true, "rtl8192de: ERR rxdesc :%d not processed\n", + desc_name); + break; + } + } + return ret; +} +EXPORT_SYMBOL_GPL(rtl92de_get_desc); |