/****************************************************************************** * * Copyright(c) 2009-2012 Realtek Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * wlanfae * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, * Hsinchu 300, Taiwan. * * Larry Finger * *****************************************************************************/ #include "../wifi.h" #include "../pci.h" #include "../base.h" #include "../stats.h" #include "reg.h" #include "def.h" #include "phy.h" #include "fw.h" #include "trx.h" #include "led.h" static u8 _rtl92se_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 skb_queue) { __le16 fc = rtl_get_fc(skb); if (unlikely(ieee80211_is_beacon(fc))) return QSLT_BEACON; if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) return QSLT_MGNT; if (ieee80211_is_nullfunc(fc)) return QSLT_HIGH; return skb->priority; } static void _rtl92se_query_rxphystatus(struct ieee80211_hw *hw, struct rtl_stats *pstats, u8 *pdesc, struct rx_fwinfo *p_drvinfo, bool packet_match_bssid, bool packet_toself, bool packet_beacon) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct phy_sts_cck_8192s_t *cck_buf; struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv); s8 rx_pwr_all = 0, rx_pwr[4]; u8 rf_rx_num = 0, evm, pwdb_all; u8 i, max_spatial_stream; u32 rssi, total_rssi = 0; bool is_cck = pstats->is_cck; pstats->packet_matchbssid = packet_match_bssid; pstats->packet_toself = packet_toself; pstats->packet_beacon = packet_beacon; pstats->rx_mimo_sig_qual[0] = -1; pstats->rx_mimo_sig_qual[1] = -1; if (is_cck) { u8 report, cck_highpwr; cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo; if (ppsc->rfpwr_state == ERFON) cck_highpwr = (u8) rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2, 0x200); 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 = -40 - (cck_agc_rpt & 0x3e); break; case 0x2: rx_pwr_all = -20 - (cck_agc_rpt & 0x3e); break; case 0x1: rx_pwr_all = -2 - (cck_agc_rpt & 0x3e); break; case 0x0: rx_pwr_all = 14 - (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 = -40 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x2: rx_pwr_all = -20 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x1: rx_pwr_all = -2 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x0: rx_pwr_all = 14 - ((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] = 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) - 110; 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 (pstats->is_ht && pstats->rate >= DESC92_RATEMCS8 && pstats->rate <= DESC92_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) 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 _rtl92se_translate_rx_signal_stuff(struct ieee80211_hw *hw, struct sk_buff *skb, struct rtl_stats *pstats, u8 *pdesc, struct rx_fwinfo *p_drvinfo) { struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct ieee80211_hdr *hdr; u8 *tmp_buf; u8 *praddr; __le16 fc; u16 type, cfc; bool packet_matchbssid, packet_toself, packet_beacon = false; 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 = ((IEEE80211_FTYPE_CTL != type) && 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); if (ieee80211_is_beacon(fc)) packet_beacon = true; _rtl92se_query_rxphystatus(hw, pstats, pdesc, p_drvinfo, packet_matchbssid, packet_toself, packet_beacon); rtl_process_phyinfo(hw, tmp_buf, pstats); } bool rtl92se_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *stats, struct ieee80211_rx_status *rx_status, u8 *pdesc, struct sk_buff *skb) { struct rx_fwinfo *p_drvinfo; u32 phystatus = (u32)GET_RX_STATUS_DESC_PHY_STATUS(pdesc); struct ieee80211_hdr *hdr; bool first_ampdu = false; stats->length = (u16)GET_RX_STATUS_DESC_PKT_LEN(pdesc); stats->rx_drvinfo_size = (u8)GET_RX_STATUS_DESC_DRVINFO_SIZE(pdesc) * 8; stats->rx_bufshift = (u8)(GET_RX_STATUS_DESC_SHIFT(pdesc) & 0x03); stats->icv = (u16)GET_RX_STATUS_DESC_ICV(pdesc); stats->crc = (u16)GET_RX_STATUS_DESC_CRC32(pdesc); stats->hwerror = (u16)(stats->crc | stats->icv); stats->decrypted = !GET_RX_STATUS_DESC_SWDEC(pdesc); stats->rate = (u8)GET_RX_STATUS_DESC_RX_MCS(pdesc); stats->shortpreamble = (u16)GET_RX_STATUS_DESC_SPLCP(pdesc); stats->isampdu = (bool)(GET_RX_STATUS_DESC_PAGGR(pdesc) == 1); stats->isfirst_ampdu = (bool) ((GET_RX_STATUS_DESC_PAGGR(pdesc) == 1) && (GET_RX_STATUS_DESC_FAGGR(pdesc) == 1)); stats->timestamp_low = GET_RX_STATUS_DESC_TSFL(pdesc); stats->rx_is40Mhzpacket = (bool)GET_RX_STATUS_DESC_BW(pdesc); stats->is_ht = (bool)GET_RX_STATUS_DESC_RX_HT(pdesc); stats->is_cck = SE_RX_HAL_IS_CCK_RATE(pdesc); if (stats->hwerror) return false; rx_status->freq = hw->conf.chandef.chan->center_freq; rx_status->band = hw->conf.chandef.chan->band; if (stats->crc) rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; if (stats->rx_is40Mhzpacket) rx_status->flag |= RX_FLAG_40MHZ; if (stats->is_ht) rx_status->flag |= RX_FLAG_HT; rx_status->flag |= RX_FLAG_MACTIME_START; /* hw will set stats->decrypted true, if it finds the * frame is open data frame or mgmt frame, * hw will not decrypt robust managment frame * for IEEE80211w but still set stats->decrypted * true, so here we should set it back to undecrypted * for IEEE80211w frame, and mac80211 sw will help * to decrypt it */ if (stats->decrypted) { hdr = (struct ieee80211_hdr *)(skb->data + stats->rx_drvinfo_size + stats->rx_bufshift); if (!hdr) { /* during testing, hdr was NULL here */ return false; } if ((ieee80211_is_robust_mgmt_frame(hdr)) && (ieee80211_has_protected(hdr->frame_control))) rx_status->flag &= ~RX_FLAG_DECRYPTED; else rx_status->flag |= RX_FLAG_DECRYPTED; } rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht, stats->rate, first_ampdu); rx_status->mactime = stats->timestamp_low; if (phystatus) { p_drvinfo = (struct rx_fwinfo *)(skb->data + stats->rx_bufshift); _rtl92se_translate_rx_signal_stuff(hw, skb, stats, pdesc, p_drvinfo); } /*rx_status->qual = stats->signal; */ rx_status->signal = stats->recvsignalpower + 10; return true; } void rtl92se_tx_fill_desc(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr, u8 *pdesc_tx, struct ieee80211_tx_info *info, struct ieee80211_sta *sta, struct sk_buff *skb, u8 hw_queue, struct rtl_tcb_desc *ptcb_desc) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u8 *pdesc = pdesc_tx; u16 seq_number; __le16 fc = hdr->frame_control; u8 reserved_macid = 0; u8 fw_qsel = _rtl92se_map_hwqueue_to_fwqueue(skb, hw_queue); bool firstseg = (!(hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG))); bool lastseg = (!(hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS))); dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); u8 bw_40 = 0; if (pci_dma_mapping_error(rtlpci->pdev, mapping)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "DMA mapping error"); return; } if (mac->opmode == NL80211_IFTYPE_STATION) { bw_40 = mac->bw_40; } else if (mac->opmode == NL80211_IFTYPE_AP || mac->opmode == NL80211_IFTYPE_ADHOC) { if (sta) bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40; } seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc); CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE_RTL8192S); if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) { firstseg = true; lastseg = true; } if (firstseg) { if (rtlpriv->dm.useramask) { /* set txdesc macId */ if (ptcb_desc->mac_id < 32) { SET_TX_DESC_MACID(pdesc, ptcb_desc->mac_id); reserved_macid |= ptcb_desc->mac_id; } } SET_TX_DESC_RSVD_MACID(pdesc, reserved_macid); SET_TX_DESC_TXHT(pdesc, ((ptcb_desc->hw_rate >= DESC92_RATEMCS0) ? 1 : 0)); if (rtlhal->version == VERSION_8192S_ACUT) { if (ptcb_desc->hw_rate == DESC92_RATE1M || ptcb_desc->hw_rate == DESC92_RATE2M || ptcb_desc->hw_rate == DESC92_RATE5_5M || ptcb_desc->hw_rate == DESC92_RATE11M) { ptcb_desc->hw_rate = DESC92_RATE12M; } } SET_TX_DESC_TX_RATE(pdesc, ptcb_desc->hw_rate); if (ptcb_desc->use_shortgi || ptcb_desc->use_shortpreamble) SET_TX_DESC_TX_SHORT(pdesc, 0); /* Aggregation related */ if (info->flags & IEEE80211_TX_CTL_AMPDU) SET_TX_DESC_AGG_ENABLE(pdesc, 1); /* For AMPDU, we must insert SSN into TX_DESC */ SET_TX_DESC_SEQ(pdesc, seq_number); /* Protection mode related */ /* For 92S, if RTS/CTS are set, HW will execute RTS. */ /* We choose only one protection mode to execute */ SET_TX_DESC_RTS_ENABLE(pdesc, ((ptcb_desc->rts_enable && !ptcb_desc->cts_enable) ? 1 : 0)); SET_TX_DESC_CTS_ENABLE(pdesc, ((ptcb_desc->cts_enable) ? 1 : 0)); SET_TX_DESC_RTS_STBC(pdesc, ((ptcb_desc->rts_stbc) ? 1 : 0)); SET_TX_DESC_RTS_RATE(pdesc, ptcb_desc->rts_rate); SET_TX_DESC_RTS_BANDWIDTH(pdesc, 0); SET_TX_DESC_RTS_SUB_CARRIER(pdesc, ptcb_desc->rts_sc); SET_TX_DESC_RTS_SHORT(pdesc, ((ptcb_desc->rts_rate <= DESC92_RATE54M) ? (ptcb_desc->rts_use_shortpreamble ? 1 : 0) : (ptcb_desc->rts_use_shortgi ? 1 : 0))); /* Set Bandwidth and sub-channel settings. */ if (bw_40) { if (ptcb_desc->packet_bw) { SET_TX_DESC_TX_BANDWIDTH(pdesc, 1); /* use duplicated mode */ SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0); } else { SET_TX_DESC_TX_BANDWIDTH(pdesc, 0); SET_TX_DESC_TX_SUB_CARRIER(pdesc, mac->cur_40_prime_sc); } } else { SET_TX_DESC_TX_BANDWIDTH(pdesc, 0); SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0); } /* 3 Fill necessary field in First Descriptor */ /*DWORD 0*/ SET_TX_DESC_LINIP(pdesc, 0); SET_TX_DESC_OFFSET(pdesc, 32); SET_TX_DESC_PKT_SIZE(pdesc, (u16) skb->len); /*DWORD 1*/ SET_TX_DESC_RA_BRSR_ID(pdesc, ptcb_desc->ratr_index); /* Fill security related */ if (info->control.hw_key) { struct ieee80211_key_conf *keyconf; keyconf = info->control.hw_key; switch (keyconf->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: SET_TX_DESC_SEC_TYPE(pdesc, 0x1); break; case WLAN_CIPHER_SUITE_TKIP: SET_TX_DESC_SEC_TYPE(pdesc, 0x2); break; case WLAN_CIPHER_SUITE_CCMP: SET_TX_DESC_SEC_TYPE(pdesc, 0x3); break; default: SET_TX_DESC_SEC_TYPE(pdesc, 0x0); break; } } /* Set Packet ID */ SET_TX_DESC_PACKET_ID(pdesc, 0); /* We will assign magement queue to BK. */ SET_TX_DESC_QUEUE_SEL(pdesc, fw_qsel); /* Alwasy enable all rate fallback range */ SET_TX_DESC_DATA_RATE_FB_LIMIT(pdesc, 0x1F); /* Fix: I don't kown why hw use 6.5M to tx when set it */ SET_TX_DESC_USER_RATE(pdesc, ptcb_desc->use_driver_rate ? 1 : 0); /* Set NON_QOS bit. */ if (!ieee80211_is_data_qos(fc)) SET_TX_DESC_NON_QOS(pdesc, 1); } /* Fill fields that are required to be initialized * in all of the descriptors */ /*DWORD 0 */ SET_TX_DESC_FIRST_SEG(pdesc, (firstseg ? 1 : 0)); SET_TX_DESC_LAST_SEG(pdesc, (lastseg ? 1 : 0)); /* DWORD 7 */ SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16) skb->len); /* DOWRD 8 */ SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping); RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n"); } void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, bool firstseg, bool lastseg, struct sk_buff *skb) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_tcb_desc *tcb_desc = (struct rtl_tcb_desc *)(skb->cb); dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); if (pci_dma_mapping_error(rtlpci->pdev, mapping)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "DMA mapping error"); return; } /* Clear all status */ CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_CMDDESC_SIZE_RTL8192S); /* This bit indicate this packet is used for FW download. */ if (tcb_desc->cmd_or_init == DESC_PACKET_TYPE_INIT) { /* For firmware downlaod we only need to set LINIP */ SET_TX_DESC_LINIP(pdesc, tcb_desc->last_inipkt); /* 92SE must set as 1 for firmware download HW DMA error */ SET_TX_DESC_FIRST_SEG(pdesc, 1); SET_TX_DESC_LAST_SEG(pdesc, 1); /* 92SE need not to set TX packet size when firmware download */ SET_TX_DESC_PKT_SIZE(pdesc, (u16)(skb->len)); SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len)); SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping); wmb(); SET_TX_DESC_OWN(pdesc, 1); } else { /* H2C Command Desc format (Host TXCMD) */ /* 92SE must set as 1 for firmware download HW DMA error */ SET_TX_DESC_FIRST_SEG(pdesc, 1); SET_TX_DESC_LAST_SEG(pdesc, 1); SET_TX_DESC_OFFSET(pdesc, 0x20); /* Buffer size + command header */ SET_TX_DESC_PKT_SIZE(pdesc, (u16)(skb->len)); /* Fixed queue of H2C command */ SET_TX_DESC_QUEUE_SEL(pdesc, 0x13); SET_BITS_TO_LE_4BYTE(skb->data, 24, 7, rtlhal->h2c_txcmd_seq); SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len)); SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping); wmb(); SET_TX_DESC_OWN(pdesc, 1); } } void rtl92se_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val) { 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: RT_ASSERT(false, "ERR txdesc :%d not process\n", desc_name); break; } } else { switch (desc_name) { case HW_DESC_RXOWN: wmb(); SET_RX_STATUS_DESC_OWN(pdesc, 1); break; case HW_DESC_RXBUFF_ADDR: SET_RX_STATUS__DESC_BUFF_ADDR(pdesc, *(u32 *) val); break; case HW_DESC_RXPKT_LEN: SET_RX_STATUS_DESC_PKT_LEN(pdesc, *(u32 *) val); break; case HW_DESC_RXERO: SET_RX_STATUS_DESC_EOR(pdesc, 1); break; default: RT_ASSERT(false, "ERR rxdesc :%d not process\n", desc_name); break; } } } u32 rtl92se_get_desc(u8 *desc, bool istx, u8 desc_name) { u32 ret = 0; if (istx) { switch (desc_name) { case HW_DESC_OWN: ret = GET_TX_DESC_OWN(desc); break; case HW_DESC_TXBUFF_ADDR: ret = GET_TX_DESC_TX_BUFFER_ADDRESS(desc); break; default: RT_ASSERT(false, "ERR txdesc :%d not process\n", desc_name); break; } } else { switch (desc_name) { case HW_DESC_OWN: ret = GET_RX_STATUS_DESC_OWN(desc); break; case HW_DESC_RXPKT_LEN: ret = GET_RX_STATUS_DESC_PKT_LEN(desc); break; default: RT_ASSERT(false, "ERR rxdesc :%d not process\n", desc_name); break; } } return ret; } void rtl92se_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) { struct rtl_priv *rtlpriv = rtl_priv(hw); rtl_write_word(rtlpriv, TP_POLL, BIT(0) << (hw_queue)); }