diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-4965-rs.c | 434 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl4965-base.c | 31 |
2 files changed, 221 insertions, 244 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c index 31a0451f7a4..7c55aa9a2ba 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c @@ -64,10 +64,6 @@ static u8 rs_ht_to_legacy[] = { IWL_RATE_48M_INDEX, IWL_RATE_54M_INDEX }; -struct iwl4965_rate { - u32 rate_n_flags; -} __attribute__ ((packed)); - /** * struct iwl4965_rate_scale_data -- tx success history for one rate */ @@ -94,7 +90,7 @@ struct iwl4965_scale_tbl_info { u8 is_dup; /* 1 = duplicated data streams */ u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */ s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ - struct iwl4965_rate current_rate; /* rate_n_flags, uCode API format */ + u32 current_rate; /* rate_n_flags, uCode API format */ struct iwl4965_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ }; @@ -144,7 +140,7 @@ struct iwl4965_lq_sta { /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ u32 supp_rates; - u16 active_rate; + u16 active_legacy_rate; u16 active_siso_rate; u16 active_mimo2_rate; u16 active_mimo3_rate; @@ -162,7 +158,7 @@ struct iwl4965_lq_sta { #ifdef CONFIG_IWL4965_HT struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; #endif - struct iwl4965_rate dbg_fixed; + u32 dbg_fixed_rate; struct iwl_priv *drv; #endif }; @@ -173,16 +169,16 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, struct sta_info *sta); static void rs_fill_link_cmd(const struct iwl_priv *priv, struct iwl4965_lq_sta *lq_sta, - struct iwl4965_rate *tx_mcs, + u32 rate_n_flags, struct iwl_link_quality_cmd *tbl); #ifdef CONFIG_MAC80211_DEBUGFS static void rs_dbgfs_set_mcs(struct iwl4965_lq_sta *lq_sta, - struct iwl4965_rate *mcs, int index); + u32 *rate_n_flags, int index); #else static void rs_dbgfs_set_mcs(struct iwl4965_lq_sta *lq_sta, - struct iwl4965_rate *mcs, int index) + u32 *rate_n_flags, int index) {} #endif @@ -232,7 +228,7 @@ static s32 expected_tpt_mimo40MHzSGI[IWL_RATE_COUNT] = { 0, 0, 0, 0, 131, 131, 191, 222, 242, 270, 284, 289, 293 }; -static inline u8 iwl4965_rate_get_rate(u32 rate_n_flags) +static inline u8 rs_extract_rate(u32 rate_n_flags) { return (u8)(rate_n_flags & 0xFF); } @@ -376,11 +372,11 @@ static void rs_tl_turn_on_agg(struct iwl_priv *priv, u8 tid, #endif /* CONFIG_IWLWIFI_HT */ -static inline int get_num_of_ant_from_mcs(u32 mcs) +static inline int get_num_of_ant_from_rate(u32 rate_n_flags) { - return (!!(mcs & RATE_MCS_ANT_A_MSK) + - !!(mcs & RATE_MCS_ANT_B_MSK) + - !!(mcs & RATE_MCS_ANT_C_MSK)); + return (!!(rate_n_flags & RATE_MCS_ANT_A_MSK) + + !!(rate_n_flags & RATE_MCS_ANT_B_MSK) + + !!(rate_n_flags & RATE_MCS_ANT_C_MSK)); } /** @@ -395,8 +391,7 @@ static int rs_collect_tx_data(struct iwl4965_rate_scale_data *windows, int successes) { struct iwl4965_rate_scale_data *window = NULL; - u64 mask; - u8 win_size = IWL_RATE_MAX_WINDOW; + static const u64 mask = (((u64)1) << (IWL_RATE_MAX_WINDOW - 1)); s32 fail_count; if (scale_index < 0 || scale_index >= IWL_RATE_COUNT) @@ -414,14 +409,14 @@ static int rs_collect_tx_data(struct iwl4965_rate_scale_data *windows, * we keep these bitmaps!). */ while (retries > 0) { - if (window->counter >= win_size) { - window->counter = win_size - 1; - mask = 1; - mask = (mask << (win_size - 1)); + if (window->counter >= IWL_RATE_MAX_WINDOW) { + + /* remove earliest */ + window->counter = IWL_RATE_MAX_WINDOW - 1; + if (window->data & mask) { window->data &= ~mask; - window->success_counter = - window->success_counter - 1; + window->success_counter--; } } @@ -431,10 +426,9 @@ static int rs_collect_tx_data(struct iwl4965_rate_scale_data *windows, /* Shift bitmap by one frame (throw away oldest history), * OR in "1", and increment "success" if this * frame was successful. */ - mask = window->data; - window->data = (mask << 1); + window->data <<= 1;; if (successes > 0) { - window->success_counter = window->success_counter + 1; + window->success_counter++; window->data |= 0x1; successes--; } @@ -467,70 +461,72 @@ static int rs_collect_tx_data(struct iwl4965_rate_scale_data *windows, /* * Fill uCode API rate_n_flags field, based on "search" or "active" table. */ -static void rs_mcs_from_tbl(struct iwl4965_rate *mcs_rate, - struct iwl4965_scale_tbl_info *tbl, - int index, u8 use_green) +/* FIXME:RS:remove this function and put the flags statically in the table */ +static u32 rate_n_flags_from_tbl(struct iwl4965_scale_tbl_info *tbl, + int index, u8 use_green) { + u32 rate_n_flags = 0; + if (is_legacy(tbl->lq_type)) { - mcs_rate->rate_n_flags = iwl4965_rates[index].plcp; + rate_n_flags = iwl4965_rates[index].plcp; if (index >= IWL_FIRST_CCK_RATE && index <= IWL_LAST_CCK_RATE) - mcs_rate->rate_n_flags |= RATE_MCS_CCK_MSK; + rate_n_flags |= RATE_MCS_CCK_MSK; } else if (is_Ht(tbl->lq_type)) { if (index > IWL_LAST_OFDM_RATE) { IWL_ERROR("invalid HT rate index %d\n", index); index = IWL_LAST_OFDM_RATE; } - mcs_rate->rate_n_flags = RATE_MCS_HT_MSK; + rate_n_flags = RATE_MCS_HT_MSK; if (is_siso(tbl->lq_type)) - mcs_rate->rate_n_flags |= - iwl4965_rates[index].plcp_siso; + rate_n_flags |= iwl4965_rates[index].plcp_siso; else if (is_mimo2(tbl->lq_type)) - mcs_rate->rate_n_flags |= - iwl4965_rates[index].plcp_mimo2; + rate_n_flags |= iwl4965_rates[index].plcp_mimo2; else - mcs_rate->rate_n_flags |= - iwl4965_rates[index].plcp_mimo3; + rate_n_flags |= iwl4965_rates[index].plcp_mimo3; } else { IWL_ERROR("Invalid tbl->lq_type %d\n", tbl->lq_type); } - mcs_rate->rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) & + rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) & RATE_MCS_ANT_ABC_MSK); - if (is_legacy(tbl->lq_type)) - return; - - if (tbl->is_fat) { - if (tbl->is_dup) - mcs_rate->rate_n_flags |= RATE_MCS_DUP_MSK; - else - mcs_rate->rate_n_flags |= RATE_MCS_FAT_MSK; - } - if (tbl->is_SGI) - mcs_rate->rate_n_flags |= RATE_MCS_SGI_MSK; - - if (use_green) { - mcs_rate->rate_n_flags |= RATE_MCS_GF_MSK; - if (is_siso(tbl->lq_type)) - mcs_rate->rate_n_flags &= ~RATE_MCS_SGI_MSK; + if (is_Ht(tbl->lq_type)) { + if (tbl->is_fat) { + if (tbl->is_dup) + rate_n_flags |= RATE_MCS_DUP_MSK; + else + rate_n_flags |= RATE_MCS_FAT_MSK; + } + if (tbl->is_SGI) + rate_n_flags |= RATE_MCS_SGI_MSK; + + if (use_green) { + rate_n_flags |= RATE_MCS_GF_MSK; + if (is_siso(tbl->lq_type) && tbl->is_SGI) { + rate_n_flags &= ~RATE_MCS_SGI_MSK; + IWL_ERROR("GF was set with SGI:SISO\n"); + } + } } + return rate_n_flags; } /* * Interpret uCode API's rate_n_flags format, * fill "search" or "active" tx mode table. */ -static int rs_get_tbl_info_from_mcs(const struct iwl4965_rate *mcs_rate, +static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, enum ieee80211_band band, struct iwl4965_scale_tbl_info *tbl, int *rate_idx) { - u32 ant_msk = (mcs_rate->rate_n_flags & RATE_MCS_ANT_ABC_MSK); - u8 num_of_ant = get_num_of_ant_from_mcs(ant_msk); + u32 ant_msk = (rate_n_flags & RATE_MCS_ANT_ABC_MSK); + u8 num_of_ant = get_num_of_ant_from_rate(rate_n_flags); + u8 mcs; - *rate_idx = iwl4965_hwrate_to_plcp_idx(mcs_rate->rate_n_flags); + *rate_idx = iwl4965_hwrate_to_plcp_idx(rate_n_flags); if (*rate_idx == IWL_RATE_INVALID) { *rate_idx = -1; @@ -543,7 +539,7 @@ static int rs_get_tbl_info_from_mcs(const struct iwl4965_rate *mcs_rate, tbl->lq_type = LQ_NONE; /* legacy rate format */ - if (!(mcs_rate->rate_n_flags & RATE_MCS_HT_MSK)) { + if (!(rate_n_flags & RATE_MCS_HT_MSK)) { if (num_of_ant == 1) { if (band == IEEE80211_BAND_5GHZ) tbl->lq_type = LQ_A; @@ -552,25 +548,24 @@ static int rs_get_tbl_info_from_mcs(const struct iwl4965_rate *mcs_rate, } /* HT rate format */ } else { - if (mcs_rate->rate_n_flags & RATE_MCS_SGI_MSK) + if (rate_n_flags & RATE_MCS_SGI_MSK) tbl->is_SGI = 1; - if ((mcs_rate->rate_n_flags & RATE_MCS_FAT_MSK) || - (mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK)) + if ((rate_n_flags & RATE_MCS_FAT_MSK) || + (rate_n_flags & RATE_MCS_DUP_MSK)) tbl->is_fat = 1; - if (mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK) + if (rate_n_flags & RATE_MCS_DUP_MSK) tbl->is_dup = 1; - /* SISO */ - if (iwl4965_rate_get_rate(mcs_rate->rate_n_flags) - <= IWL_RATE_SISO_60M_PLCP) { + mcs = rs_extract_rate(rate_n_flags); + /* SISO */ + if (mcs <= IWL_RATE_SISO_60M_PLCP) { if (num_of_ant == 1) tbl->lq_type = LQ_SISO; /*else NONE*/ /* MIMO2 */ - } else if (iwl4965_rate_get_rate(mcs_rate->rate_n_flags) - <= IWL_RATE_MIMO2_60M_PLCP) { + } else if (mcs <= IWL_RATE_MIMO2_60M_PLCP) { if (num_of_ant == 2) tbl->lq_type = LQ_MIMO2; /* MIMO3 */ @@ -582,13 +577,14 @@ static int rs_get_tbl_info_from_mcs(const struct iwl4965_rate *mcs_rate, return 0; } /* FIXME:RS: need to toggle also ANT_C, and also AB,AC,BC */ -static inline void rs_toggle_antenna(struct iwl4965_rate *new_rate, +static inline void rs_toggle_antenna(u32 *rate_n_flags, struct iwl4965_scale_tbl_info *tbl) { tbl->ant_type ^= ANT_AB; - new_rate->rate_n_flags ^= (RATE_MCS_ANT_A_MSK|RATE_MCS_ANT_B_MSK); + *rate_n_flags ^= (RATE_MCS_ANT_A_MSK|RATE_MCS_ANT_B_MSK); } +/* FIXME:RS: in 4965 we don't use greenfield at all */ static inline u8 rs_use_green(struct iwl_priv *priv, struct ieee80211_conf *conf) { @@ -596,8 +592,9 @@ static inline u8 rs_use_green(struct iwl_priv *priv, return ((conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) && priv->current_ht_config.is_green_field && !priv->current_ht_config.non_GF_STA_present); -#endif /* CONFIG_IWL4965_HT */ +#else return 0; +#endif /* CONFIG_IWL4965_HT */ } /** @@ -613,7 +610,7 @@ static void rs_get_supported_rates(struct iwl4965_lq_sta *lq_sta, u16 *data_rate) { if (is_legacy(rate_type)) - *data_rate = lq_sta->active_rate; + *data_rate = lq_sta->active_legacy_rate; else { if (is_siso(rate_type)) *data_rate = lq_sta->active_siso_rate; @@ -684,9 +681,9 @@ static u16 rs_get_adjacent_rate(u8 index, u16 rate_mask, int rate_type) return (high << 8) | low; } -static void rs_get_lower_rate(struct iwl4965_lq_sta *lq_sta, +static u32 rs_get_lower_rate(struct iwl4965_lq_sta *lq_sta, struct iwl4965_scale_tbl_info *tbl, u8 scale_index, - u8 ht_possible, struct iwl4965_rate *mcs_rate) + u8 ht_possible) { s32 low; u16 rate_mask; @@ -726,17 +723,18 @@ static void rs_get_lower_rate(struct iwl4965_lq_sta *lq_sta, /* If we switched from HT to legacy, check current rate */ if (switch_to_legacy && (rate_mask & (1 << scale_index))) { - rs_mcs_from_tbl(mcs_rate, tbl, scale_index, is_green); - return; + low = scale_index; + goto out; } high_low = rs_get_adjacent_rate(scale_index, rate_mask, tbl->lq_type); low = high_low & 0xff; - if (low != IWL_RATE_INVALID) - rs_mcs_from_tbl(mcs_rate, tbl, low, is_green); - else - rs_mcs_from_tbl(mcs_rate, tbl, scale_index, is_green); + if (low == IWL_RATE_INVALID) + low = scale_index; + +out: + return rate_n_flags_from_tbl(tbl, low, is_green); } /* @@ -758,7 +756,7 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, struct ieee80211_hw *hw = local_to_hw(local); struct iwl4965_rate_scale_data *window = NULL; struct iwl4965_rate_scale_data *search_win = NULL; - struct iwl4965_rate tx_mcs; + u32 tx_rate; struct iwl4965_scale_tbl_info tbl_type; struct iwl4965_scale_tbl_info *curr_tbl, *search_tbl; u8 active_index = 0; @@ -817,8 +815,8 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, * to check "search" mode, or a prior "search" mode after we've moved * to a new "search" mode (which might become the new "active" mode). */ - tx_mcs.rate_n_flags = le32_to_cpu(table->rs_table[0].rate_n_flags); - rs_get_tbl_info_from_mcs(&tx_mcs, priv->band, &tbl_type, &rs_index); + tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags); + rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index); if (priv->band == IEEE80211_BAND_5GHZ) rs_index -= IWL_FIRST_OFDM_RATE; @@ -830,14 +828,13 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, (tbl_type.is_dup ^ !!(tx_resp->control.flags & IEEE80211_TXCTL_DUP_DATA)) || (tbl_type.ant_type ^ tx_resp->control.antenna_sel_tx) || - (!!(tx_mcs.rate_n_flags & RATE_MCS_HT_MSK) ^ + (!!(tx_rate & RATE_MCS_HT_MSK) ^ !!(tx_resp->control.flags & IEEE80211_TXCTL_OFDM_HT)) || - (!!(tx_mcs.rate_n_flags & RATE_MCS_GF_MSK) ^ + (!!(tx_rate & RATE_MCS_GF_MSK) ^ !!(tx_resp->control.flags & IEEE80211_TXCTL_GREEN_FIELD)) || (hw->wiphy->bands[priv->band]->bitrates[rs_index].bitrate != tx_resp->control.tx_rate->bitrate)) { - IWL_DEBUG_RATE("initial rate does not match 0x%x\n", - tx_mcs.rate_n_flags); + IWL_DEBUG_RATE("initial rate does not match 0x%x\n", tx_rate); goto out; } @@ -845,9 +842,8 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, while (retries) { /* Look up the rate and other info used for each tx attempt. * Each tx attempt steps one entry deeper in the rate table. */ - tx_mcs.rate_n_flags = - le32_to_cpu(table->rs_table[index].rate_n_flags); - rs_get_tbl_info_from_mcs(&tx_mcs, priv->band, + tx_rate = le32_to_cpu(table->rs_table[index].rate_n_flags); + rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index); /* If type matches "search" table, @@ -887,8 +883,8 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, * if Tx was successful first try, use original rate, * else look up the rate that was, finally, successful. */ - tx_mcs.rate_n_flags = le32_to_cpu(table->rs_table[index].rate_n_flags); - rs_get_tbl_info_from_mcs(&tx_mcs, priv->band, &tbl_type, &rs_index); + tx_rate = le32_to_cpu(table->rs_table[index].rate_n_flags); + rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index); /* Update frame history window with "success" if Tx got ACKed ... */ if (tx_resp->flags & IEEE80211_TX_STATUS_ACK) @@ -1158,11 +1154,6 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv, !sta->ht_info.ht_supported) return -1; - IWL_DEBUG_HT("LQ: try to switch to MIMO\n"); - tbl->lq_type = LQ_MIMO2; - rs_get_supported_rates(lq_sta, NULL, tbl->lq_type, - &rate_mask); - if (priv->current_ht_config.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC) return -1; @@ -1170,14 +1161,20 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv, if (!rs_is_both_ant_supp(priv->hw_params.valid_tx_ant)) return -1; + IWL_DEBUG_HT("LQ: try to switch to MIMO2\n"); + + tbl->lq_type = LQ_MIMO2; tbl->is_dup = lq_sta->is_dup; tbl->action = 0; + rate_mask = lq_sta->active_mimo2_rate; + if (priv->current_ht_config.supported_chan_width - == IWL_CHANNEL_WIDTH_40MHZ) + == IWL_CHANNEL_WIDTH_40MHZ) tbl->is_fat = 1; else tbl->is_fat = 0; + /* FIXME: - don't toggle SGI here if (tbl->is_fat) { if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY) tbl->is_SGI = 1; @@ -1187,18 +1184,23 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv, tbl->is_SGI = 1; else tbl->is_SGI = 0; + */ rs_get_expected_tpt_table(lq_sta, tbl); rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index, index); - IWL_DEBUG_HT("LQ: MIMO best rate %d mask %X\n", rate, rate_mask); - if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) + IWL_DEBUG_HT("LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask); + + if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { + IWL_DEBUG_HT("Can't switch with index %d rate mask %x\n", + rate, rate_mask); return -1; - rs_mcs_from_tbl(&tbl->current_rate, tbl, rate, is_green); + } + tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green); IWL_DEBUG_HT("LQ: Switch to new mcs %X index is green %X\n", - tbl->current_rate.rate_n_flags, is_green); + tbl->current_rate, is_green); return 0; } #else @@ -1226,16 +1228,16 @@ static int rs_switch_to_siso(struct iwl_priv *priv, u8 is_green = lq_sta->is_green; s32 rate; - IWL_DEBUG_HT("LQ: try to switch to SISO\n"); if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) || !sta->ht_info.ht_supported) return -1; + IWL_DEBUG_HT("LQ: try to switch to SISO\n"); + tbl->is_dup = lq_sta->is_dup; tbl->lq_type = LQ_SISO; tbl->action = 0; - rs_get_supported_rates(lq_sta, NULL, tbl->lq_type, - &rate_mask); + rate_mask = lq_sta->active_siso_rate; if (priv->current_ht_config.supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ) @@ -1243,6 +1245,7 @@ static int rs_switch_to_siso(struct iwl_priv *priv, else tbl->is_fat = 0; + /* FIXME: - don't toggle SGI here if (tbl->is_fat) { if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY) tbl->is_SGI = 1; @@ -1252,9 +1255,10 @@ static int rs_switch_to_siso(struct iwl_priv *priv, tbl->is_SGI = 1; else tbl->is_SGI = 0; + */ if (is_green) - tbl->is_SGI = 0; + tbl->is_SGI = 0; /*11n spec: no SGI in SISO+Greenfield*/ rs_get_expected_tpt_table(lq_sta, tbl); rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index, index); @@ -1265,9 +1269,9 @@ static int rs_switch_to_siso(struct iwl_priv *priv, rate, rate_mask); return -1; } - rs_mcs_from_tbl(&tbl->current_rate, tbl, rate, is_green); + tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green); IWL_DEBUG_HT("LQ: Switch to new mcs %X index is green %X\n", - tbl->current_rate.rate_n_flags, is_green); + tbl->current_rate, is_green); return 0; #else return -1; @@ -1298,12 +1302,13 @@ static int rs_move_legacy_other(struct iwl_priv *priv, for (; ;) { switch (tbl->action) { case IWL_LEGACY_SWITCH_ANTENNA: - IWL_DEBUG_HT("LQ Legacy switch Antenna\n"); + IWL_DEBUG_HT("LQ Legacy toggle Antenna\n"); search_tbl->lq_type = LQ_NONE; lq_sta->action_counter++; /* Don't change antenna if success has been great */ + /*FIXME:RS:not sure this is really needed*/ if (window->success_ratio >= IWL_RS_GOOD_RATIO) break; @@ -1315,7 +1320,7 @@ static int rs_move_legacy_other(struct iwl_priv *priv, /* Set up search table to try other antenna */ memcpy(search_tbl, tbl, sz); - rs_toggle_antenna(&(search_tbl->current_rate), + rs_toggle_antenna(&search_tbl->current_rate, search_tbl); rs_get_expected_tpt_table(lq_sta, search_tbl); lq_sta->search_better_tbl = 1; @@ -1326,9 +1331,7 @@ static int rs_move_legacy_other(struct iwl_priv *priv, /* Set up search table to try SISO */ memcpy(search_tbl, tbl, sz); - search_tbl->lq_type = LQ_SISO; search_tbl->is_SGI = 0; - search_tbl->is_fat = 0; ret = rs_switch_to_siso(priv, lq_sta, conf, sta, search_tbl, index); if (!ret) { @@ -1339,13 +1342,11 @@ static int rs_move_legacy_other(struct iwl_priv *priv, break; case IWL_LEGACY_SWITCH_MIMO2: - IWL_DEBUG_HT("LQ: Legacy switch MIMO\n"); + IWL_DEBUG_HT("LQ: Legacy switch to MIMO2\n"); /* Set up search table to try MIMO */ memcpy(search_tbl, tbl, sz); - search_tbl->lq_type = LQ_MIMO2; search_tbl->is_SGI = 0; - search_tbl->is_fat = 0; search_tbl->ant_type = ANT_AB;/*FIXME:RS*/ /*FIXME:RS:need to check ant validity*/ ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta, @@ -1400,8 +1401,8 @@ static int rs_move_siso_to_other(struct iwl_priv *priv, lq_sta->action_counter++; switch (tbl->action) { case IWL_SISO_SWITCH_ANTENNA: - IWL_DEBUG_HT("LQ: SISO SWITCH ANTENNA SISO\n"); - search_tbl->lq_type = LQ_NONE; + IWL_DEBUG_HT("LQ: SISO toggle Antenna\n"); + /*FIXME:RS: is this really needed for SISO?*/ if (window->success_ratio >= IWL_RS_GOOD_RATIO) break; if (!rs_is_other_ant_connected(valid_tx_ant, @@ -1409,19 +1410,16 @@ static int rs_move_siso_to_other(struct iwl_priv *priv, break; memcpy(search_tbl, tbl, sz); - search_tbl->action = IWL_SISO_SWITCH_MIMO2; - rs_toggle_antenna(&(search_tbl->current_rate), + rs_toggle_antenna(&search_tbl->current_rate, search_tbl); lq_sta->search_better_tbl = 1; goto out; case IWL_SISO_SWITCH_MIMO2: - IWL_DEBUG_HT("LQ: SISO SWITCH TO MIMO2 FROM SISO\n"); + IWL_DEBUG_HT("LQ: SISO switch to MIMO\n"); memcpy(search_tbl, tbl, sz); - search_tbl->lq_type = LQ_MIMO2; search_tbl->is_SGI = 0; - search_tbl->is_fat = 0; search_tbl->ant_type = ANT_AB; /*FIXME:RS*/ ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta, search_tbl, index); @@ -1431,29 +1429,25 @@ static int rs_move_siso_to_other(struct iwl_priv *priv, } break; case IWL_SISO_SWITCH_GI: - IWL_DEBUG_HT("LQ: SISO SWITCH TO GI\n"); + IWL_DEBUG_HT("LQ: SISO toggle SGI/NGI\n"); memcpy(search_tbl, tbl, sz); - search_tbl->action = 0; - if (search_tbl->is_SGI) - search_tbl->is_SGI = 0; - else if (!is_green) - search_tbl->is_SGI = 1; - else - break; - lq_sta->search_better_tbl = 1; - if ((tbl->lq_type == LQ_SISO) && - (tbl->is_SGI)) { - s32 tpt = lq_sta->last_tpt / 100; - if (((!tbl->is_fat) && - (tpt >= expected_tpt_siso20MHz[index])) || - ((tbl->is_fat) && - (tpt >= expected_tpt_siso40MHz[index]))) - lq_sta->search_better_tbl = 0; + if (is_green) { + if (!tbl->is_SGI) + break; + else + IWL_ERROR("SGI was set in GF+SISO\n"); } + search_tbl->is_SGI = !tbl->is_SGI; rs_get_expected_tpt_table(lq_sta, search_tbl); - rs_mcs_from_tbl(&search_tbl->current_rate, - search_tbl, index, is_green); + if (tbl->is_SGI) { + s32 tpt = lq_sta->last_tpt / 100; + if (tpt >= search_tbl->expected_tpt[index]) + break; + } + search_tbl->current_rate = rate_n_flags_from_tbl( + search_tbl, index, is_green); + lq_sta->search_better_tbl = 1; goto out; } tbl->action++; @@ -1496,15 +1490,12 @@ static int rs_move_mimo_to_other(struct iwl_priv *priv, switch (tbl->action) { case IWL_MIMO_SWITCH_ANTENNA_A: case IWL_MIMO_SWITCH_ANTENNA_B: - IWL_DEBUG_HT("LQ: MIMO SWITCH TO SISO\n"); - + IWL_DEBUG_HT("LQ: MIMO2 switch to SISO\n"); /* Set up new search table for SISO */ memcpy(search_tbl, tbl, sz); - search_tbl->lq_type = LQ_SISO; - search_tbl->is_SGI = 0; - search_tbl->is_fat = 0; - /*FIXME:RS:need to check ant validity + C*/ + + /*FIXME:RS:need to check ant validity + C*/ if (tbl->action == IWL_MIMO_SWITCH_ANTENNA_A) search_tbl->ant_type = ANT_A; else @@ -1519,35 +1510,26 @@ static int rs_move_mimo_to_other(struct iwl_priv *priv, break; case IWL_MIMO_SWITCH_GI: - IWL_DEBUG_HT("LQ: MIMO SWITCH TO GI\n"); + IWL_DEBUG_HT("LQ: MIMO toggle SGI/NGI\n"); /* Set up new search table for MIMO */ memcpy(search_tbl, tbl, sz); - search_tbl->action = 0; - if (search_tbl->is_SGI) - search_tbl->is_SGI = 0; - else - search_tbl->is_SGI = 1; - lq_sta->search_better_tbl = 1; - + search_tbl->is_SGI = !tbl->is_SGI; + rs_get_expected_tpt_table(lq_sta, search_tbl); /* * If active table already uses the fastest possible * modulation (dual stream with short guard interval), * and it's working well, there's no need to look * for a better type of modulation! */ - if ((tbl->lq_type == LQ_MIMO2) && - (tbl->is_SGI)) { + if (tbl->is_SGI) { s32 tpt = lq_sta->last_tpt / 100; - if (((!tbl->is_fat) && - (tpt >= expected_tpt_mimo20MHz[index])) || - ((tbl->is_fat) && - (tpt >= expected_tpt_mimo40MHz[index]))) - lq_sta->search_better_tbl = 0; + if (tpt >= search_tbl->expected_tpt[index]) + break; } - rs_get_expected_tpt_table(lq_sta, search_tbl); - rs_mcs_from_tbl(&search_tbl->current_rate, - search_tbl, index, is_green); + search_tbl->current_rate = rate_n_flags_from_tbl( + search_tbl, index, is_green); + lq_sta->search_better_tbl = 1; goto out; } @@ -1677,7 +1659,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, struct iwl4965_lq_sta *lq_sta; struct iwl4965_scale_tbl_info *tbl, *tbl1; u16 rate_scale_index_msk = 0; - struct iwl4965_rate mcs_rate; + u32 rate; u8 is_green = 0; u8 active_tbl = 0; u8 done_search = 0; @@ -1802,8 +1784,8 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, /* Set up new rate table in uCode, if needed */ if (update_lq) { - rs_mcs_from_tbl(&mcs_rate, tbl, index, is_green); - rs_fill_link_cmd(priv, lq_sta, &mcs_rate, &lq_sta->lq); + rate = rate_n_flags_from_tbl(tbl, index, is_green); + rs_fill_link_cmd(priv, lq_sta, rate, &lq_sta->lq); iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); } goto out; @@ -1847,7 +1829,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, /* Revert to "active" rate and throughput info */ index = iwl4965_hwrate_to_plcp_idx( - tbl->current_rate.rate_n_flags); + tbl->current_rate); current_tpt = lq_sta->last_tpt; /* Need to set up a new rate table in uCode */ @@ -1967,8 +1949,8 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, lq_update: /* Replace uCode's rate table for the destination station. */ if (update_lq) { - rs_mcs_from_tbl(&mcs_rate, tbl, index, is_green); - rs_fill_link_cmd(priv, lq_sta, &mcs_rate, &lq_sta->lq); + rate = rate_n_flags_from_tbl(tbl, index, is_green); + rs_fill_link_cmd(priv, lq_sta, rate, &lq_sta->lq); iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); } @@ -2003,11 +1985,11 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, /* Use new "search" start rate */ index = iwl4965_hwrate_to_plcp_idx( - tbl->current_rate.rate_n_flags); + tbl->current_rate); IWL_DEBUG_HT("Switch current mcs: %X index: %d\n", - tbl->current_rate.rate_n_flags, index); - rs_fill_link_cmd(priv, lq_sta, &tbl->current_rate, + tbl->current_rate, index); + rs_fill_link_cmd(priv, lq_sta, tbl->current_rate, &lq_sta->lq); iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); } @@ -2058,7 +2040,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, } out: - rs_mcs_from_tbl(&tbl->current_rate, tbl, index, is_green); + tbl->current_rate = rate_n_flags_from_tbl(tbl, index, is_green); i = index; sta->last_txrate_idx = i; @@ -2084,7 +2066,7 @@ static void rs_initialize_lq(struct iwl_priv *priv, u8 active_tbl = 0; int rate_idx; u8 use_green = rs_use_green(priv, conf); - struct iwl4965_rate mcs_rate; + u32 rate; if (!sta || !sta->rate_ctrl_priv) goto out; @@ -2107,22 +2089,22 @@ static void rs_initialize_lq(struct iwl_priv *priv, i = 0; /* FIXME:RS: This is also wrong in 4965 */ - mcs_rate.rate_n_flags = iwl4965_rates[i].plcp ; - mcs_rate.rate_n_flags |= RATE_MCS_ANT_B_MSK; - mcs_rate.rate_n_flags &= ~RATE_MCS_ANT_A_MSK; + rate = iwl4965_rates[i].plcp; + rate |= RATE_MCS_ANT_B_MSK; + rate &= ~RATE_MCS_ANT_A_MSK; if (i >= IWL_FIRST_CCK_RATE && i <= IWL_LAST_CCK_RATE) - mcs_rate.rate_n_flags |= RATE_MCS_CCK_MSK; + rate |= RATE_MCS_CCK_MSK; tbl->ant_type = ANT_B; - rs_get_tbl_info_from_mcs(&mcs_rate, priv->band, tbl, &rate_idx); + rs_get_tbl_info_from_mcs(rate, priv->band, tbl, &rate_idx); if (!rs_is_ant_connected(priv->hw_params.valid_tx_ant, tbl->ant_type)) - rs_toggle_antenna(&mcs_rate, tbl); + rs_toggle_antenna(&rate, tbl); - rs_mcs_from_tbl(&mcs_rate, tbl, rate_idx, use_green); - tbl->current_rate.rate_n_flags = mcs_rate.rate_n_flags; + rate = rate_n_flags_from_tbl(tbl, rate_idx, use_green); + tbl->current_rate = rate; rs_get_expected_tpt_table(lq_sta, tbl); - rs_fill_link_cmd(NULL, lq_sta, &mcs_rate, &lq_sta->lq); + rs_fill_link_cmd(NULL, lq_sta, rate, &lq_sta->lq); iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); out: return; @@ -2275,8 +2257,7 @@ static void rs_rate_init(void *priv_rate, void *priv_sta, lq_sta->is_dup = 0; lq_sta->is_green = rs_use_green(priv, conf); - lq_sta->active_rate = priv->active_rate; - lq_sta->active_rate &= ~(0x1000); + lq_sta->active_legacy_rate = priv->active_rate & ~(0x1000); lq_sta->active_rate_basic = priv->active_rate_basic; lq_sta->band = priv->band; #ifdef CONFIG_IWL4965_HT @@ -2326,7 +2307,7 @@ static void rs_rate_init(void *priv_rate, void *priv_sta, static void rs_fill_link_cmd(const struct iwl_priv *priv, struct iwl4965_lq_sta *lq_sta, - struct iwl4965_rate *tx_mcs, + u32 new_rate, struct iwl_link_quality_cmd *lq_cmd) { int index = 0; @@ -2334,14 +2315,13 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, int repeat_rate = 0; u8 ant_toggle_count = 0; u8 use_ht_possible = 1; - struct iwl4965_rate new_rate; struct iwl4965_scale_tbl_info tbl_type = { 0 }; /* Override starting rate (index 0) if needed for debug purposes */ - rs_dbgfs_set_mcs(lq_sta, tx_mcs, index); + rs_dbgfs_set_mcs(lq_sta, &new_rate, index); - /* Interpret rate_n_flags */ - rs_get_tbl_info_from_mcs(tx_mcs, lq_sta->band, + /* Interpret new_rate (rate_n_flags) */ + rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type, &rate_idx); /* How many times should we repeat the initial rate? */ @@ -2355,9 +2335,7 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, is_mimo(tbl_type.lq_type) ? 1 : 0; /* Fill 1st table entry (index 0) */ - lq_cmd->rs_table[index].rate_n_flags = - cpu_to_le32(tx_mcs->rate_n_flags); - new_rate.rate_n_flags = tx_mcs->rate_n_flags; + lq_cmd->rs_table[index].rate_n_flags = cpu_to_le32(new_rate); /*FIXME:RS*/ if (is_mimo(tbl_type.lq_type) || (tbl_type.ant_type == ANT_A)) @@ -2393,12 +2371,12 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, /* Fill next table entry */ lq_cmd->rs_table[index].rate_n_flags = - cpu_to_le32(new_rate.rate_n_flags); + cpu_to_le32(new_rate); repeat_rate--; index++; } - rs_get_tbl_info_from_mcs(&new_rate, lq_sta->band, &tbl_type, + rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type, &rate_idx); /* Indicate to uCode which entries might be MIMO. @@ -2408,8 +2386,8 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, lq_cmd->general_params.mimo_delimiter = index; /* Get next rate */ - rs_get_lower_rate(lq_sta, &tbl_type, rate_idx, - use_ht_possible, &new_rate); + new_rate = rs_get_lower_rate(lq_sta, &tbl_type, rate_idx, + use_ht_possible); /* How many times should we repeat the next rate? */ if (is_legacy(tbl_type.lq_type)) { @@ -2433,8 +2411,7 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, rs_dbgfs_set_mcs(lq_sta, &new_rate, index); /* Fill next table entry */ - lq_cmd->rs_table[index].rate_n_flags = - cpu_to_le32(new_rate.rate_n_flags); + lq_cmd->rs_table[index].rate_n_flags = cpu_to_le32(new_rate); index++; repeat_rate--; @@ -2483,25 +2460,21 @@ static int open_file_generic(struct inode *inode, struct file *file) return 0; } static void rs_dbgfs_set_mcs(struct iwl4965_lq_sta *lq_sta, - struct iwl4965_rate *mcs, int index) + u32 *rate_n_flags, int index) { - u32 base_rate; - - if (lq_sta->band == IEEE80211_BAND_5GHZ) - base_rate = 0x800D; - else - base_rate = 0x820A; - - if (lq_sta->dbg_fixed.rate_n_flags) { - if (index < 12) - mcs->rate_n_flags = lq_sta->dbg_fixed.rate_n_flags; - else - mcs->rate_n_flags = base_rate; + if (lq_sta->dbg_fixed_rate) { + if (index < 12) { + *rate_n_flags = lq_sta->dbg_fixed_rate; + } else { + if (lq_sta->band == IEEE80211_BAND_5GHZ) + *rate_n_flags = 0x800D; + else + *rate_n_flags = 0x820A; + } IWL_DEBUG_RATE("Fixed rate ON\n"); - return; + } else { + IWL_DEBUG_RATE("Fixed rate OFF\n"); } - - IWL_DEBUG_RATE("Fixed rate OFF\n"); } static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, @@ -2518,20 +2491,21 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, return -EFAULT; if (sscanf(buf, "%x", &parsed_rate) == 1) - lq_sta->dbg_fixed.rate_n_flags = parsed_rate; + lq_sta->dbg_fixed_rate = parsed_rate; else - lq_sta->dbg_fixed.rate_n_flags = 0; + lq_sta->dbg_fixed_rate = 0; - lq_sta->active_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */ - lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ - lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ - lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ + lq_sta->active_legacy_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */ + lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ + lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ + lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ IWL_DEBUG_RATE("sta_id %d rate 0x%X\n", - lq_sta->lq.sta_id, lq_sta->dbg_fixed.rate_n_flags); + lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate); - if (lq_sta->dbg_fixed.rate_n_flags) { - rs_fill_link_cmd(NULL, lq_sta, &lq_sta->dbg_fixed, &lq_sta->lq); + if (lq_sta->dbg_fixed_rate) { + rs_fill_link_cmd(NULL, lq_sta, lq_sta->dbg_fixed_rate, + &lq_sta->lq); iwl_send_lq_cmd(lq_sta->drv, &lq_sta->lq, CMD_ASYNC); } @@ -2550,9 +2524,9 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, desc += sprintf(buff+desc, "sta_id %d\n", lq_sta->lq.sta_id); desc += sprintf(buff+desc, "failed=%d success=%d rate=0%X\n", lq_sta->total_failed, lq_sta->total_success, - lq_sta->active_rate); + lq_sta->active_legacy_rate); desc += sprintf(buff+desc, "fixed rate 0x%X\n", - lq_sta->dbg_fixed.rate_n_flags); + lq_sta->dbg_fixed_rate); desc += sprintf(buff+desc, "general:" "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n", lq_sta->lq.general_params.flags, @@ -2602,7 +2576,7 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file, lq_sta->lq_info[i].is_SGI, lq_sta->lq_info[i].is_fat, lq_sta->lq_info[i].is_dup, - lq_sta->lq_info[i].current_rate.rate_n_flags); + lq_sta->lq_info[i].current_rate); for (j = 0; j < IWL_RATE_COUNT; j++) { desc += sprintf(buff+desc, "counter=%d success=%d %%=%d\n", diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index 783f722f3c3..3452cc66242 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -1073,17 +1073,29 @@ unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv, return priv->ibss_beacon->len; } -static u8 iwl4965_rate_get_lowest_plcp(int rate_mask) +static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv) { - u8 i; + int i; + int rate_mask; + + /* Set rate mask*/ + if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) + rate_mask = priv->active_rate_basic & 0xF; + else + rate_mask = priv->active_rate_basic & 0xFF0; + /* Find lowest valid rate */ for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; - i = iwl4965_rates[i].next_ieee) { + i = iwl4965_rates[i].next_ieee) { if (rate_mask & (1 << i)) return iwl4965_rates[i].plcp; } - return IWL_RATE_INVALID; + /* No valid rate was found. Assign the lowest one */ + if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) + return IWL_RATE_1M_PLCP; + else + return IWL_RATE_6M_PLCP; } static int iwl4965_send_beacon_cmd(struct iwl_priv *priv) @@ -1101,16 +1113,7 @@ static int iwl4965_send_beacon_cmd(struct iwl_priv *priv) return -ENOMEM; } - if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) { - rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & - 0xFF0); - if (rate == IWL_INVALID_RATE) - rate = IWL_RATE_6M_PLCP; - } else { - rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF); - if (rate == IWL_INVALID_RATE) - rate = IWL_RATE_1M_PLCP; - } + rate = iwl4965_rate_get_lowest_plcp(priv); frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate); |