rtlwifi: Convert rc routines for addition of rtl8192se and rtl8192de

Convert rc routines for addition of RTL8192SE and RTL8192DE code

Signed-off-by: Chaoming_Li <chaoming_li@realsil.com.cn>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 95 insertions, 126 deletions

diff --git a/drivers/net/wireless/rtlwifi/rc.c b/drivers/net/wireless/rtlwifi/rc.c
index 91634107434..30da68a7778 100644
--- a/drivers/net/wireless/rtlwifi/rc.c
+++ b/drivers/net/wireless/rtlwifi/rc.c
@@ -38,17 +38,14 @@
  *CCK11M or OFDM_54M based on wireless mode.
  */
 static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
+                                  struct ieee80211_sta *sta,
                                   struct sk_buff *skb, bool not_data)
 {
         struct rtl_mac *rtlmac = rtl_mac(rtlpriv);
-
-        /*
-         *mgt use 1M, although we have check it
-         *before this function use rate_control_send_low,
-         *we still check it here
-         */
-        if (not_data)
-                return rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+        struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
+        struct rtl_phy *rtlphy = &(rtlpriv->phy);
+        struct rtl_sta_info *sta_entry = NULL;
+        u8 wireless_mode = 0;
 
         /*
          *this rate is no use for true rate, firmware
@@ -57,35 +54,78 @@ static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
          *2.in rtl_get_tcb_desc when we check rate is
          *      1M we will not use FW rate but user rate.
          */
-        if (rtl_is_special_data(rtlpriv->mac80211.hw, skb, true)) {
-                return rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+        if (rtlmac->opmode == NL80211_IFTYPE_AP ||
+                rtlmac->opmode == NL80211_IFTYPE_ADHOC) {
+                if (sta) {
+                        sta_entry = (struct rtl_sta_info *) sta->drv_priv;
+                        wireless_mode = sta_entry->wireless_mode;
+                } else {
+                        return 0;
+                }
+        } else {
+                wireless_mode = rtlmac->mode;
+        }
+
+        if (rtl_is_special_data(rtlpriv->mac80211.hw, skb, true) ||
+                        not_data) {
+                return 0;
         } else {
-                if (rtlmac->mode == WIRELESS_MODE_B)
-                        return rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
-                else
-                        return rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
+                if (rtlhal->current_bandtype == BAND_ON_2_4G) {
+                        if (wireless_mode == WIRELESS_MODE_B) {
+                                return B_MODE_MAX_RIX;
+                        } else if (wireless_mode == WIRELESS_MODE_G) {
+                                return G_MODE_MAX_RIX;
+                        } else {
+                                if (get_rf_type(rtlphy) != RF_2T2R)
+                                        return N_MODE_MCS7_RIX;
+                                else
+                                        return N_MODE_MCS15_RIX;
+                        }
+                } else {
+                        if (wireless_mode == WIRELESS_MODE_A) {
+                                return A_MODE_MAX_RIX;
+                        } else {
+                                if (get_rf_type(rtlphy) != RF_2T2R)
+                                        return N_MODE_MCS7_RIX;
+                                else
+                                        return N_MODE_MCS15_RIX;
+                        }
+                }
         }
 }
 
 static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
+                                    struct ieee80211_sta *sta,
                                     struct ieee80211_tx_rate *rate,
                                     struct ieee80211_tx_rate_control *txrc,
-                                    u8 tries, u8 rix, int rtsctsenable,
+                                    u8 tries, char rix, int rtsctsenable,
                                     bool not_data)
 {
         struct rtl_mac *mac = rtl_mac(rtlpriv);
+        u8 sgi_20 = 0, sgi_40 = 0;
 
+        if (sta) {
+                sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
+                sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
+        }
         rate->count = tries;
-        rate->idx = (rix > 0x2) ? rix : 0x2;
+        rate->idx = rix >= 0x00 ? rix : 0x00;
 
         if (!not_data) {
                 if (txrc->short_preamble)
                         rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
-                if (mac->bw_40)
-                        rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
-                if (mac->sgi_20 || mac->sgi_40)
+                if (mac->opmode == NL80211_IFTYPE_AP ||
+                        mac->opmode == NL80211_IFTYPE_ADHOC) {
+                        if (sta && (sta->ht_cap.cap &
+                            IEEE80211_HT_CAP_SUP_WIDTH_20_40))
+                                rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+                } else {
+                        if (mac->bw_40)
+                                rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+                }
+                if (sgi_20 || sgi_40)
                         rate->flags |= IEEE80211_TX_RC_SHORT_GI;
-                if (mac->ht_enable)
+                if (sta && sta->ht_cap.ht_supported)
                         rate->flags |= IEEE80211_TX_RC_MCS;
         }
 }
@@ -97,39 +137,39 @@ static void rtl_get_rate(void *ppriv, struct ieee80211_sta *sta,
         struct sk_buff *skb = txrc->skb;
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
         struct ieee80211_tx_rate *rates = tx_info->control.rates;
-        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-        __le16 fc = hdr->frame_control;
+        __le16 fc = rtl_get_fc(skb);
         u8 try_per_rate, i, rix;
         bool not_data = !ieee80211_is_data(fc);
 
         if (rate_control_send_low(sta, priv_sta, txrc))
                 return;
 
-        rix = _rtl_rc_get_highest_rix(rtlpriv, skb, not_data);
-
+        rix = _rtl_rc_get_highest_rix(rtlpriv, sta, skb, not_data);
         try_per_rate = 1;
-        _rtl_rc_rate_set_series(rtlpriv, &rates[0], txrc,
+        _rtl_rc_rate_set_series(rtlpriv, sta, &rates[0], txrc,
                                 try_per_rate, rix, 1, not_data);
 
         if (!not_data) {
                 for (i = 1; i < 4; i++)
-                        _rtl_rc_rate_set_series(rtlpriv, &rates[i],
+                        _rtl_rc_rate_set_series(rtlpriv, sta, &rates[i],
                                                 txrc, i, (rix - i), 1,
                                                 not_data);
         }
 }
 
-static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv, u16 tid)
+static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv,
+                struct rtl_sta_info *sta_entry, u16 tid)
 {
         struct rtl_mac *mac = rtl_mac(rtlpriv);
 
         if (mac->act_scanning)
                 return false;
 
-        if (mac->cnt_after_linked < 3)
+        if (mac->opmode == NL80211_IFTYPE_STATION &&
+                mac->cnt_after_linked < 3)
                 return false;
 
-        if (mac->tids[tid].agg.agg_state == RTL_AGG_OFF)
+        if (sta_entry->tids[tid].agg.agg_state == RTL_AGG_STOP)
                 return true;
 
         return false;
@@ -143,11 +183,9 @@ static void rtl_tx_status(void *ppriv,
 {
         struct rtl_priv *rtlpriv = ppriv;
         struct rtl_mac *mac = rtl_mac(rtlpriv);
-        struct ieee80211_hdr *hdr;
-        __le16 fc;
-
-        hdr = (struct ieee80211_hdr *)skb->data;
-        fc = hdr->frame_control;
+        struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
+        __le16 fc = rtl_get_fc(skb);
+        struct rtl_sta_info *sta_entry;
 
         if (!priv_sta || !ieee80211_is_data(fc))
                 return;
@@ -159,17 +197,21 @@ static void rtl_tx_status(void *ppriv,
             || is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
                 return;
 
-        /* Check if aggregation has to be enabled for this tid */
-        if (conf_is_ht(&mac->hw->conf) &&
-            !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
-                if (ieee80211_is_data_qos(fc)) {
-                        u8 *qc, tid;
-
-                        qc = ieee80211_get_qos_ctl(hdr);
-                        tid = qc[0] & 0xf;
-
-                        if (_rtl_tx_aggr_check(rtlpriv, tid))
-                                ieee80211_start_tx_ba_session(sta, tid, 5000);
+        if (sta) {
+                /* Check if aggregation has to be enabled for this tid */
+                sta_entry = (struct rtl_sta_info *) sta->drv_priv;
+                if ((sta->ht_cap.ht_supported == true) &&
+                                !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
+                        if (ieee80211_is_data_qos(fc)) {
+                                u8 tid = rtl_get_tid(skb);
+                                if (_rtl_tx_aggr_check(rtlpriv, sta_entry,
+                                    tid)) {
+                                        sta_entry->tids[tid].agg.agg_state =
+                                                         RTL_AGG_PROGRESS;
+                                        ieee80211_start_tx_ba_session(sta,
+                                                                 tid, 5000);
+                                }
+                        }
                 }
         }
 }
@@ -178,43 +220,6 @@ static void rtl_rate_init(void *ppriv,
                           struct ieee80211_supported_band *sband,
                           struct ieee80211_sta *sta, void *priv_sta)
 {
-        struct rtl_priv *rtlpriv = ppriv;
-        struct rtl_mac *mac = rtl_mac(rtlpriv);
-        u8 is_ht = conf_is_ht(&mac->hw->conf);
-
-        if ((mac->opmode == NL80211_IFTYPE_STATION) ||
-            (mac->opmode == NL80211_IFTYPE_MESH_POINT) ||
-            (mac->opmode == NL80211_IFTYPE_ADHOC)) {
-
-                switch (sband->band) {
-                case IEEE80211_BAND_2GHZ:
-                        rtlpriv->rate_priv->cur_ratetab_idx =
-                            RATR_INX_WIRELESS_G;
-                        if (is_ht)
-                                rtlpriv->rate_priv->cur_ratetab_idx =
-                                    RATR_INX_WIRELESS_NGB;
-                        break;
-                case IEEE80211_BAND_5GHZ:
-                        rtlpriv->rate_priv->cur_ratetab_idx =
-                            RATR_INX_WIRELESS_A;
-                        if (is_ht)
-                                rtlpriv->rate_priv->cur_ratetab_idx =
-                                    RATR_INX_WIRELESS_NGB;
-                        break;
-                default:
-                        RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
-                                 ("Invalid band\n"));
-                        rtlpriv->rate_priv->cur_ratetab_idx =
-                            RATR_INX_WIRELESS_NGB;
-                        break;
-                }
-
-                RT_TRACE(rtlpriv, COMP_RATE, DBG_DMESG,
-                         ("Choosing rate table index: %d\n",
-                          rtlpriv->rate_priv->cur_ratetab_idx));
-
-        }
-
 }
 
 static void rtl_rate_update(void *ppriv,
@@ -223,49 +228,6 @@ static void rtl_rate_update(void *ppriv,
                             u32 changed,
                             enum nl80211_channel_type oper_chan_type)
 {
-        struct rtl_priv *rtlpriv = ppriv;
-        struct rtl_mac *mac = rtl_mac(rtlpriv);
-        struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
-        bool oper_cw40 = false, oper_sgi40;
-        bool local_cw40 = mac->bw_40;
-        bool local_sgi40 = mac->sgi_40;
-        u8 is_ht = conf_is_ht(&mac->hw->conf);
-
-        if (changed & IEEE80211_RC_HT_CHANGED) {
-                if (mac->opmode != NL80211_IFTYPE_STATION)
-                        return;
-
-                if (rtlhal->hw->conf.channel_type == NL80211_CHAN_HT40MINUS ||
-                    rtlhal->hw->conf.channel_type == NL80211_CHAN_HT40PLUS)
-                        oper_cw40 = true;
-
-                oper_sgi40 = mac->sgi_40;
-
-                if ((local_cw40 != oper_cw40) || (local_sgi40 != oper_sgi40)) {
-                        switch (sband->band) {
-                        case IEEE80211_BAND_2GHZ:
-                                rtlpriv->rate_priv->cur_ratetab_idx =
-                                    RATR_INX_WIRELESS_G;
-                                if (is_ht)
-                                        rtlpriv->rate_priv->cur_ratetab_idx =
-                                            RATR_INX_WIRELESS_NGB;
-                                break;
-                        case IEEE80211_BAND_5GHZ:
-                                rtlpriv->rate_priv->cur_ratetab_idx =
-                                    RATR_INX_WIRELESS_A;
-                                if (is_ht)
-                                        rtlpriv->rate_priv->cur_ratetab_idx =
-                                            RATR_INX_WIRELESS_NGB;
-                                break;
-                        default:
-                                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
-                                         ("Invalid band\n"));
-                                rtlpriv->rate_priv->cur_ratetab_idx =
-                                    RATR_INX_WIRELESS_NGB;
-                                break;
-                        }
-                }
-        }
 }
 
 static void *rtl_rate_alloc(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/rtlwifi/rc.h b/drivers/net/wireless/rtlwifi/rc.h
index b4667c035f0..4afa2c20adc 100644
--- a/drivers/net/wireless/rtlwifi/rc.h
+++ b/drivers/net/wireless/rtlwifi/rc.h
@@ -30,8 +30,15 @@
 #ifndef __RTL_RC_H__
 #define __RTL_RC_H__
 
+#define B_MODE_MAX_RIX 3
+#define G_MODE_MAX_RIX 11
+#define A_MODE_MAX_RIX 7
+
+/* in mac80211 mcs0-mcs15 is idx0-idx15*/
+#define N_MODE_MCS7_RIX 7
+#define N_MODE_MCS15_RIX 15
+
 struct rtl_rate_priv {
-        u8 cur_ratetab_idx;
         u8 ht_cap;
 };