diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rs.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rs.c | 653 |
1 files changed, 107 insertions, 546 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c index b328a988c130..4ffaa3fa153f 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/iwlwifi/mvm/rs.c @@ -56,61 +56,61 @@ #define IWL_RATE_SCALE_FLUSH_INTVL (3*HZ) static u8 rs_ht_to_legacy[] = { - IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX, - IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX, - IWL_RATE_6M_INDEX, - IWL_RATE_6M_INDEX, IWL_RATE_9M_INDEX, - IWL_RATE_12M_INDEX, IWL_RATE_18M_INDEX, - IWL_RATE_24M_INDEX, IWL_RATE_36M_INDEX, - IWL_RATE_48M_INDEX, IWL_RATE_54M_INDEX + [IWL_RATE_1M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_2M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_5M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_11M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_6M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_9M_INDEX] = IWL_RATE_6M_INDEX, + [IWL_RATE_12M_INDEX] = IWL_RATE_9M_INDEX, + [IWL_RATE_18M_INDEX] = IWL_RATE_12M_INDEX, + [IWL_RATE_24M_INDEX] = IWL_RATE_18M_INDEX, + [IWL_RATE_36M_INDEX] = IWL_RATE_24M_INDEX, + [IWL_RATE_48M_INDEX] = IWL_RATE_36M_INDEX, + [IWL_RATE_54M_INDEX] = IWL_RATE_48M_INDEX, + [IWL_RATE_60M_INDEX] = IWL_RATE_54M_INDEX, }; static const u8 ant_toggle_lookup[] = { - /*ANT_NONE -> */ ANT_NONE, - /*ANT_A -> */ ANT_B, - /*ANT_B -> */ ANT_C, - /*ANT_AB -> */ ANT_BC, - /*ANT_C -> */ ANT_A, - /*ANT_AC -> */ ANT_AB, - /*ANT_BC -> */ ANT_AC, - /*ANT_ABC -> */ ANT_ABC, + [ANT_NONE] = ANT_NONE, + [ANT_A] = ANT_B, + [ANT_B] = ANT_C, + [ANT_AB] = ANT_BC, + [ANT_C] = ANT_A, + [ANT_AC] = ANT_AB, + [ANT_BC] = ANT_AC, + [ANT_ABC] = ANT_ABC, }; -#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ +#define IWL_DECLARE_RATE_INFO(r, s, rp, rn) \ [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ IWL_RATE_SISO_##s##M_PLCP, \ IWL_RATE_MIMO2_##s##M_PLCP,\ - IWL_RATE_MIMO3_##s##M_PLCP,\ - IWL_RATE_##r##M_IEEE, \ - IWL_RATE_##ip##M_INDEX, \ - IWL_RATE_##in##M_INDEX, \ IWL_RATE_##rp##M_INDEX, \ - IWL_RATE_##rn##M_INDEX, \ - IWL_RATE_##pp##M_INDEX, \ - IWL_RATE_##np##M_INDEX } + IWL_RATE_##rn##M_INDEX } /* * Parameter order: - * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate + * rate, ht rate, prev rate, next rate * * If there isn't a valid next or previous rate then INV is used which * maps to IWL_RATE_INVALID * */ static const struct iwl_rs_rate_info iwl_rates[IWL_RATE_COUNT] = { - IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ - IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ - IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ - IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ - IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ - IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ - IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ - IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ - IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ - IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ - IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ - IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ - IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ + IWL_DECLARE_RATE_INFO(1, INV, INV, 2), /* 1mbps */ + IWL_DECLARE_RATE_INFO(2, INV, 1, 5), /* 2mbps */ + IWL_DECLARE_RATE_INFO(5, INV, 2, 11), /*5.5mbps */ + IWL_DECLARE_RATE_INFO(11, INV, 9, 12), /* 11mbps */ + IWL_DECLARE_RATE_INFO(6, 6, 5, 11), /* 6mbps */ + IWL_DECLARE_RATE_INFO(9, 6, 6, 11), /* 9mbps */ + IWL_DECLARE_RATE_INFO(12, 12, 11, 18), /* 12mbps */ + IWL_DECLARE_RATE_INFO(18, 18, 12, 24), /* 18mbps */ + IWL_DECLARE_RATE_INFO(24, 24, 18, 36), /* 24mbps */ + IWL_DECLARE_RATE_INFO(36, 36, 24, 48), /* 36mbps */ + IWL_DECLARE_RATE_INFO(48, 48, 36, 54), /* 48mbps */ + IWL_DECLARE_RATE_INFO(54, 54, 48, INV), /* 54mbps */ + IWL_DECLARE_RATE_INFO(60, 60, 48, INV), /* 60mbps */ /* FIXME:RS: ^^ should be INV (legacy) */ }; @@ -128,9 +128,8 @@ static int iwl_hwrate_to_plcp_idx(u32 rate_n_flags) if (rate_n_flags & RATE_MCS_HT_MSK) { idx = rs_extract_rate(rate_n_flags); - if (idx >= IWL_RATE_MIMO3_6M_PLCP) - idx = idx - IWL_RATE_MIMO3_6M_PLCP; - else if (idx >= IWL_RATE_MIMO2_6M_PLCP) + WARN_ON_ONCE(idx >= IWL_RATE_MIMO3_6M_PLCP); + if (idx >= IWL_RATE_MIMO2_6M_PLCP) idx = idx - IWL_RATE_MIMO2_6M_PLCP; idx += IWL_FIRST_OFDM_RATE; @@ -162,10 +161,10 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search); #ifdef CONFIG_MAC80211_DEBUGFS static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, - u32 *rate_n_flags, int index); + u32 *rate_n_flags); #else static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, - u32 *rate_n_flags, int index) + u32 *rate_n_flags) {} #endif @@ -212,20 +211,6 @@ static s32 expected_tpt_mimo2_40MHz[4][IWL_RATE_COUNT] = { {0, 0, 0, 0, 186, 0, 329, 439, 527, 667, 764, 803, 838}, /* AGG+SGI */ }; -static s32 expected_tpt_mimo3_20MHz[4][IWL_RATE_COUNT] = { - {0, 0, 0, 0, 99, 0, 153, 186, 208, 239, 256, 263, 268}, /* Norm */ - {0, 0, 0, 0, 106, 0, 162, 194, 215, 246, 262, 268, 273}, /* SGI */ - {0, 0, 0, 0, 134, 0, 249, 346, 431, 574, 685, 732, 775}, /* AGG */ - {0, 0, 0, 0, 148, 0, 272, 376, 465, 614, 727, 775, 818}, /* AGG+SGI */ -}; - -static s32 expected_tpt_mimo3_40MHz[4][IWL_RATE_COUNT] = { - {0, 0, 0, 0, 152, 0, 211, 239, 255, 279, 290, 294, 297}, /* Norm */ - {0, 0, 0, 0, 160, 0, 219, 245, 261, 284, 294, 297, 300}, /* SGI */ - {0, 0, 0, 0, 254, 0, 443, 584, 695, 868, 984, 1030, 1070}, /* AGG */ - {0, 0, 0, 0, 277, 0, 478, 624, 737, 911, 1026, 1070, 1109}, /* AGG+SGI */ -}; - /* mbps, mcs */ static const struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = { { "1", "BPSK DSSS"}, @@ -260,82 +245,6 @@ static inline u8 rs_is_valid_ant(u8 valid_antenna, u8 ant_type) return (ant_type & valid_antenna) == ant_type; } -/* - * removes the old data from the statistics. All data that is older than - * TID_MAX_TIME_DIFF, will be deleted. - */ -static void rs_tl_rm_old_stats(struct iwl_traffic_load *tl, u32 curr_time) -{ - /* The oldest age we want to keep */ - u32 oldest_time = curr_time - TID_MAX_TIME_DIFF; - - while (tl->queue_count && - (tl->time_stamp < oldest_time)) { - tl->total -= tl->packet_count[tl->head]; - tl->packet_count[tl->head] = 0; - tl->time_stamp += TID_QUEUE_CELL_SPACING; - tl->queue_count--; - tl->head++; - if (tl->head >= TID_QUEUE_MAX_SIZE) - tl->head = 0; - } -} - -/* - * increment traffic load value for tid and also remove - * any old values if passed the certain time period - */ -static u8 rs_tl_add_packet(struct iwl_lq_sta *lq_data, - struct ieee80211_hdr *hdr) -{ - u32 curr_time = jiffies_to_msecs(jiffies); - u32 time_diff; - s32 index; - struct iwl_traffic_load *tl = NULL; - u8 tid; - - if (ieee80211_is_data_qos(hdr->frame_control)) { - u8 *qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & 0xf; - } else { - return IWL_MAX_TID_COUNT; - } - - if (unlikely(tid >= IWL_MAX_TID_COUNT)) - return IWL_MAX_TID_COUNT; - - tl = &lq_data->load[tid]; - - curr_time -= curr_time % TID_ROUND_VALUE; - - /* Happens only for the first packet. Initialize the data */ - if (!(tl->queue_count)) { - tl->total = 1; - tl->time_stamp = curr_time; - tl->queue_count = 1; - tl->head = 0; - tl->packet_count[0] = 1; - return IWL_MAX_TID_COUNT; - } - - time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); - index = time_diff / TID_QUEUE_CELL_SPACING; - - /* The history is too long: remove data that is older than */ - /* TID_MAX_TIME_DIFF */ - if (index >= TID_QUEUE_MAX_SIZE) - rs_tl_rm_old_stats(tl, curr_time); - - index = (tl->head + index) % TID_QUEUE_MAX_SIZE; - tl->packet_count[index] = tl->packet_count[index] + 1; - tl->total = tl->total + 1; - - if ((index + 1) > tl->queue_count) - tl->queue_count = index + 1; - - return tid; -} - #ifdef CONFIG_MAC80211_DEBUGFS /** * Program the device to use fixed rate for frame transmit @@ -349,7 +258,6 @@ static void rs_program_fix_rate(struct iwl_mvm *mvm, 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(mvm, "sta_id %d rate 0x%X\n", lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate); @@ -361,45 +269,11 @@ static void rs_program_fix_rate(struct iwl_mvm *mvm, } #endif -/* - get the traffic load value for tid -*/ -static u32 rs_tl_get_load(struct iwl_lq_sta *lq_data, u8 tid) -{ - u32 curr_time = jiffies_to_msecs(jiffies); - u32 time_diff; - s32 index; - struct iwl_traffic_load *tl = NULL; - - if (tid >= IWL_MAX_TID_COUNT) - return 0; - - tl = &(lq_data->load[tid]); - - curr_time -= curr_time % TID_ROUND_VALUE; - - if (!(tl->queue_count)) - return 0; - - time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); - index = time_diff / TID_QUEUE_CELL_SPACING; - - /* The history is too long: remove data that is older than */ - /* TID_MAX_TIME_DIFF */ - if (index >= TID_QUEUE_MAX_SIZE) - rs_tl_rm_old_stats(tl, curr_time); - - return tl->total; -} - static int rs_tl_turn_on_agg_for_tid(struct iwl_mvm *mvm, struct iwl_lq_sta *lq_data, u8 tid, struct ieee80211_sta *sta) { int ret = -EAGAIN; - u32 load; - - load = rs_tl_get_load(lq_data, tid); /* * Don't create TX aggregation sessions when in high @@ -563,7 +437,7 @@ static u32 rate_n_flags_from_tbl(struct iwl_mvm *mvm, else if (is_mimo2(tbl->lq_type)) rate_n_flags |= iwl_rates[index].plcp_mimo2; else - rate_n_flags |= iwl_rates[index].plcp_mimo3; + WARN_ON_ONCE(1); } else { IWL_ERR(mvm, "Invalid tbl->lq_type %d\n", tbl->lq_type); } @@ -601,7 +475,7 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, u8 num_of_ant = get_num_of_ant_from_rate(rate_n_flags); u8 mcs; - memset(tbl, 0, sizeof(struct iwl_scale_tbl_info)); + memset(tbl, 0, offsetof(struct iwl_scale_tbl_info, win)); *rate_idx = iwl_hwrate_to_plcp_idx(rate_n_flags); if (*rate_idx == IWL_RATE_INVALID) { @@ -640,12 +514,8 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, } else if (mcs <= IWL_RATE_MIMO2_60M_PLCP) { if (num_of_ant == 2) tbl->lq_type = LQ_MIMO2; - /* MIMO3 */ } else { - if (num_of_ant == 3) { - tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH; - tbl->lq_type = LQ_MIMO3; - } + WARN_ON_ONCE(num_of_ant == 3); } } return 0; @@ -711,10 +581,10 @@ static u16 rs_get_supported_rates(struct iwl_lq_sta *lq_sta, } else { if (is_siso(rate_type)) return lq_sta->active_siso_rate; - else if (is_mimo2(rate_type)) + else { + WARN_ON_ONCE(!is_mimo2(rate_type)); return lq_sta->active_mimo2_rate; - else - return lq_sta->active_mimo3_rate; + } } } @@ -1089,7 +959,7 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, } /* Choose among many HT tables depending on number of streams - * (SISO/MIMO2/MIMO3), channel width (20/40), SGI, and aggregation + * (SISO/MIMO2), channel width (20/40), SGI, and aggregation * status */ if (is_siso(tbl->lq_type) && !tbl->is_ht40) ht_tbl_pointer = expected_tpt_siso20MHz; @@ -1097,12 +967,10 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, ht_tbl_pointer = expected_tpt_siso40MHz; else if (is_mimo2(tbl->lq_type) && !tbl->is_ht40) ht_tbl_pointer = expected_tpt_mimo2_20MHz; - else if (is_mimo2(tbl->lq_type)) + else { + WARN_ON_ONCE(!is_mimo2(tbl->lq_type)); ht_tbl_pointer = expected_tpt_mimo2_40MHz; - else if (is_mimo3(tbl->lq_type) && !tbl->is_ht40) - ht_tbl_pointer = expected_tpt_mimo3_20MHz; - else /* if (is_mimo3(tbl->lq_type)) <-- must be true */ - ht_tbl_pointer = expected_tpt_mimo3_40MHz; + } if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */ tbl->expected_tpt = ht_tbl_pointer[0]; @@ -1274,58 +1142,6 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm, } /* - * Set up search table for MIMO3 - */ -static int rs_switch_to_mimo3(struct iwl_mvm *mvm, - struct iwl_lq_sta *lq_sta, - struct ieee80211_sta *sta, - struct iwl_scale_tbl_info *tbl, int index) -{ - u16 rate_mask; - s32 rate; - s8 is_green = lq_sta->is_green; - - if (!sta->ht_cap.ht_supported) - return -1; - - if (sta->smps_mode == IEEE80211_SMPS_STATIC) - return -1; - - /* Need both Tx chains/antennas to support MIMO */ - if (num_of_ant(iwl_fw_valid_tx_ant(mvm->fw)) < 3) - return -1; - - IWL_DEBUG_RATE(mvm, "LQ: try to switch to MIMO3\n"); - - tbl->lq_type = LQ_MIMO3; - tbl->action = 0; - tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH; - rate_mask = lq_sta->active_mimo3_rate; - - if (iwl_is_ht40_tx_allowed(sta)) - tbl->is_ht40 = 1; - else - tbl->is_ht40 = 0; - - rs_set_expected_tpt_table(lq_sta, tbl); - - rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index); - - IWL_DEBUG_RATE(mvm, "LQ: MIMO3 best rate %d mask %X\n", - rate, rate_mask); - if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { - IWL_DEBUG_RATE(mvm, "Can't switch with index %d rate mask %x\n", - rate, rate_mask); - return -1; - } - tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate, is_green); - - IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index is green %X\n", - tbl->current_rate, is_green); - return 0; -} - -/* * Set up search table for SISO */ static int rs_switch_to_siso(struct iwl_mvm *mvm, @@ -1434,21 +1250,14 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, } break; - case IWL_LEGACY_SWITCH_MIMO2_AB: - case IWL_LEGACY_SWITCH_MIMO2_AC: - case IWL_LEGACY_SWITCH_MIMO2_BC: + case IWL_LEGACY_SWITCH_MIMO2: IWL_DEBUG_RATE(mvm, "LQ: Legacy switch to MIMO2\n"); /* Set up search table to try MIMO */ memcpy(search_tbl, tbl, sz); search_tbl->is_SGI = 0; - if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AB) - search_tbl->ant_type = ANT_AB; - else if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AC) - search_tbl->ant_type = ANT_AC; - else - search_tbl->ant_type = ANT_BC; + search_tbl->ant_type = ANT_AB; if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) @@ -1461,30 +1270,11 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, goto out; } break; - - case IWL_LEGACY_SWITCH_MIMO3_ABC: - IWL_DEBUG_RATE(mvm, "LQ: Legacy switch to MIMO3\n"); - - /* Set up search table to try MIMO3 */ - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - - search_tbl->ant_type = ANT_ABC; - - if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) - break; - - ret = rs_switch_to_mimo3(mvm, lq_sta, sta, - search_tbl, index); - if (!ret) { - lq_sta->action_counter = 0; - goto out; - } - break; + default: + WARN_ON_ONCE(1); } tbl->action++; - if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_LEGACY_SWITCH_MIMO2) tbl->action = IWL_LEGACY_SWITCH_ANTENNA1; if (tbl->action == start_action) @@ -1496,7 +1286,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, out: lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_LEGACY_SWITCH_MIMO2) tbl->action = IWL_LEGACY_SWITCH_ANTENNA1; if (update_search_tbl_counter) search_tbl->action = tbl->action; @@ -1531,7 +1321,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, case IWL_BT_COEX_TRAFFIC_LOAD_LOW: /* avoid antenna B unless MIMO */ if (tbl->action == IWL_SISO_SWITCH_ANTENNA2) - tbl->action = IWL_SISO_SWITCH_MIMO2_AB; + tbl->action = IWL_SISO_SWITCH_MIMO2; break; case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: @@ -1573,19 +1363,12 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, goto out; } break; - case IWL_SISO_SWITCH_MIMO2_AB: - case IWL_SISO_SWITCH_MIMO2_AC: - case IWL_SISO_SWITCH_MIMO2_BC: + case IWL_SISO_SWITCH_MIMO2: IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO2\n"); memcpy(search_tbl, tbl, sz); search_tbl->is_SGI = 0; - if (tbl->action == IWL_SISO_SWITCH_MIMO2_AB) - search_tbl->ant_type = ANT_AB; - else if (tbl->action == IWL_SISO_SWITCH_MIMO2_AC) - search_tbl->ant_type = ANT_AC; - else - search_tbl->ant_type = ANT_BC; + search_tbl->ant_type = ANT_AB; if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) @@ -1626,24 +1409,11 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, index, is_green); update_search_tbl_counter = 1; goto out; - case IWL_SISO_SWITCH_MIMO3_ABC: - IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO3\n"); - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - search_tbl->ant_type = ANT_ABC; - - if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) - break; - - ret = rs_switch_to_mimo3(mvm, lq_sta, sta, - search_tbl, index); - if (!ret) - goto out; - break; + default: + WARN_ON_ONCE(1); } tbl->action++; - if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_SISO_SWITCH_GI) tbl->action = IWL_SISO_SWITCH_ANTENNA1; if (tbl->action == start_action) @@ -1655,7 +1425,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, out: lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_SISO_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_SISO_SWITCH_GI) tbl->action = IWL_SISO_SWITCH_ANTENNA1; if (update_search_tbl_counter) search_tbl->action = tbl->action; @@ -1696,8 +1466,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, break; case IWL_BT_COEX_TRAFFIC_LOAD_LOW: /* avoid antenna B unless MIMO */ - if (tbl->action == IWL_MIMO2_SWITCH_SISO_B || - tbl->action == IWL_MIMO2_SWITCH_SISO_C) + if (tbl->action == IWL_MIMO2_SWITCH_SISO_B) tbl->action = IWL_MIMO2_SWITCH_SISO_A; break; default: @@ -1730,7 +1499,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, break; case IWL_MIMO2_SWITCH_SISO_A: case IWL_MIMO2_SWITCH_SISO_B: - case IWL_MIMO2_SWITCH_SISO_C: IWL_DEBUG_RATE(mvm, "LQ: MIMO2 switch to SISO\n"); /* Set up new search table for SISO */ @@ -1738,10 +1506,8 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, if (tbl->action == IWL_MIMO2_SWITCH_SISO_A) search_tbl->ant_type = ANT_A; - else if (tbl->action == IWL_MIMO2_SWITCH_SISO_B) + else /* tbl->action == IWL_MIMO2_SWITCH_SISO_B */ search_tbl->ant_type = ANT_B; - else - search_tbl->ant_type = ANT_C; if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) @@ -1784,26 +1550,11 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, index, is_green); update_search_tbl_counter = 1; goto out; - - case IWL_MIMO2_SWITCH_MIMO3_ABC: - IWL_DEBUG_RATE(mvm, "LQ: MIMO2 switch to MIMO3\n"); - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - search_tbl->ant_type = ANT_ABC; - - if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) - break; - - ret = rs_switch_to_mimo3(mvm, lq_sta, sta, - search_tbl, index); - if (!ret) - goto out; - - break; + default: + WARN_ON_ONCE(1); } tbl->action++; - if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_MIMO2_SWITCH_GI) tbl->action = IWL_MIMO2_SWITCH_ANTENNA1; if (tbl->action == start_action) @@ -1814,7 +1565,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, out: lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC) + if (tbl->action > IWL_MIMO2_SWITCH_GI) tbl->action = IWL_MIMO2_SWITCH_ANTENNA1; if (update_search_tbl_counter) search_tbl->action = tbl->action; @@ -1823,171 +1574,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, } /* - * Try to switch to new modulation mode from MIMO3 - */ -static int rs_move_mimo3_to_other(struct iwl_mvm *mvm, - struct iwl_lq_sta *lq_sta, - struct ieee80211_sta *sta, int index) -{ - s8 is_green = lq_sta->is_green; - struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - struct iwl_scale_tbl_info *search_tbl = - &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); - struct iwl_rate_scale_data *window = &(tbl->win[index]); - struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; - u32 sz = (sizeof(struct iwl_scale_tbl_info) - - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); - u8 start_action; - u8 valid_tx_ant = iwl_fw_valid_tx_ant(mvm->fw); - u8 tx_chains_num = num_of_ant(valid_tx_ant); - int ret; - u8 update_search_tbl_counter = 0; - - switch (BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD)) { - case IWL_BT_COEX_TRAFFIC_LOAD_NONE: - /* nothing */ - break; - case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: - case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: - /* avoid antenna B and MIMO */ - if (tbl->action != IWL_MIMO3_SWITCH_SISO_A) - tbl->action = IWL_MIMO3_SWITCH_SISO_A; - break; - case IWL_BT_COEX_TRAFFIC_LOAD_LOW: - /* avoid antenna B unless MIMO */ - if (tbl->action == IWL_MIMO3_SWITCH_SISO_B || - tbl->action == IWL_MIMO3_SWITCH_SISO_C) - tbl->action = IWL_MIMO3_SWITCH_SISO_A; - break; - default: - IWL_ERR(mvm, "Invalid BT load %d", - BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD)); - break; - } - - start_action = tbl->action; - while (1) { - lq_sta->action_counter++; - switch (tbl->action) { - case IWL_MIMO3_SWITCH_ANTENNA1: - case IWL_MIMO3_SWITCH_ANTENNA2: - IWL_DEBUG_RATE(mvm, "LQ: MIMO3 toggle Antennas\n"); - - if (tx_chains_num <= 3) - break; - - if (window->success_ratio >= IWL_RS_GOOD_RATIO) - break; - - memcpy(search_tbl, tbl, sz); - if (rs_toggle_antenna(valid_tx_ant, - &search_tbl->current_rate, - search_tbl)) - goto out; - break; - case IWL_MIMO3_SWITCH_SISO_A: - case IWL_MIMO3_SWITCH_SISO_B: - case IWL_MIMO3_SWITCH_SISO_C: - IWL_DEBUG_RATE(mvm, "LQ: MIMO3 switch to SISO\n"); - - /* Set up new search table for SISO */ - memcpy(search_tbl, tbl, sz); - - if (tbl->action == IWL_MIMO3_SWITCH_SISO_A) - search_tbl->ant_type = ANT_A; - else if (tbl->action == IWL_MIMO3_SWITCH_SISO_B) - search_tbl->ant_type = ANT_B; - else - search_tbl->ant_type = ANT_C; - - if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) - break; - - ret = rs_switch_to_siso(mvm, lq_sta, sta, - search_tbl, index); - if (!ret) - goto out; - - break; - - case IWL_MIMO3_SWITCH_MIMO2_AB: - case IWL_MIMO3_SWITCH_MIMO2_AC: - case IWL_MIMO3_SWITCH_MIMO2_BC: - IWL_DEBUG_RATE(mvm, "LQ: MIMO3 switch to MIMO2\n"); - - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AB) - search_tbl->ant_type = ANT_AB; - else if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AC) - search_tbl->ant_type = ANT_AC; - else - search_tbl->ant_type = ANT_BC; - - if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) - break; - - ret = rs_switch_to_mimo2(mvm, lq_sta, sta, - search_tbl, index); - if (!ret) - goto out; - - break; - - case IWL_MIMO3_SWITCH_GI: - if (!tbl->is_ht40 && !(ht_cap->cap & - IEEE80211_HT_CAP_SGI_20)) - break; - if (tbl->is_ht40 && !(ht_cap->cap & - IEEE80211_HT_CAP_SGI_40)) - break; - - IWL_DEBUG_RATE(mvm, "LQ: MIMO3 toggle SGI/NGI\n"); - - /* Set up new search table for MIMO */ - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = !tbl->is_SGI; - rs_set_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->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(mvm, search_tbl, - index, is_green); - update_search_tbl_counter = 1; - goto out; - } - tbl->action++; - if (tbl->action > IWL_MIMO3_SWITCH_GI) - tbl->action = IWL_MIMO3_SWITCH_ANTENNA1; - - if (tbl->action == start_action) - break; - } - search_tbl->lq_type = LQ_NONE; - return 0; - out: - lq_sta->search_better_tbl = 1; - tbl->action++; - if (tbl->action > IWL_MIMO3_SWITCH_GI) - tbl->action = IWL_MIMO3_SWITCH_ANTENNA1; - if (update_search_tbl_counter) - search_tbl->action = tbl->action; - - return 0; -} - -/* * Check whether we should continue using same modulation mode, or * begin search for a new mode, based on: * 1) # tx successes or failures while using this mode @@ -2086,6 +1672,22 @@ static void rs_update_rate_tbl(struct iwl_mvm *mvm, iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, CMD_ASYNC, false); } +static u8 rs_get_tid(struct iwl_lq_sta *lq_data, + struct ieee80211_hdr *hdr) +{ + u8 tid = IWL_MAX_TID_COUNT; + + if (ieee80211_is_data_qos(hdr->frame_control)) { + u8 *qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & 0xf; + } + + if (unlikely(tid > IWL_MAX_TID_COUNT)) + tid = IWL_MAX_TID_COUNT; + + return tid; +} + /* * Do rate scaling and search for new modulation mode. */ @@ -2129,7 +1731,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, lq_sta->supp_rates = sta->supp_rates[lq_sta->band]; - tid = rs_tl_add_packet(lq_sta, hdr); + tid = rs_get_tid(lq_sta, hdr); if ((tid != IWL_MAX_TID_COUNT) && (lq_sta->tx_agg_tid_en & (1 << tid))) { tid_data = &sta_priv->tid_data[tid]; @@ -2377,8 +1979,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, scale_action = 0; if ((BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD) >= - IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && - (is_mimo2(tbl->lq_type) || is_mimo3(tbl->lq_type))) { + IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && (is_mimo(tbl->lq_type))) { if (lq_sta->last_bt_traffic > BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD)) { /* @@ -2395,8 +1996,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD); if ((BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD) >= - IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && - (is_mimo2(tbl->lq_type) || is_mimo3(tbl->lq_type))) { + IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && is_mimo(tbl->lq_type)) { /* search for a new modulation */ rs_stay_in_table(lq_sta, true); goto lq_update; @@ -2456,7 +2056,7 @@ lq_update: else if (is_mimo2(tbl->lq_type)) rs_move_mimo2_to_other(mvm, lq_sta, sta, index); else - rs_move_mimo3_to_other(mvm, lq_sta, sta, index); + WARN_ON_ONCE(1); /* If new "search" mode was selected, set up in uCode table */ if (lq_sta->search_better_tbl) { @@ -2621,11 +2221,10 @@ static void rs_get_rate(void *mvm_r, struct ieee80211_sta *sta, void *mvm_sta, rate_idx -= IWL_FIRST_OFDM_RATE; /* 6M and 9M shared same MCS index */ rate_idx = (rate_idx > 0) ? (rate_idx - 1) : 0; + WARN_ON_ONCE(rs_extract_rate(lq_sta->last_rate_n_flags) >= + IWL_RATE_MIMO3_6M_PLCP); if (rs_extract_rate(lq_sta->last_rate_n_flags) >= - IWL_RATE_MIMO3_6M_PLCP) - rate_idx = rate_idx + (2 * MCS_INDEX_PER_STREAM); - else if (rs_extract_rate(lq_sta->last_rate_n_flags) >= - IWL_RATE_MIMO2_6M_PLCP) + IWL_RATE_MIMO2_6M_PLCP) rate_idx = rate_idx + MCS_INDEX_PER_STREAM; info->control.rates[0].flags = IEEE80211_TX_RC_MCS; if (lq_sta->last_rate_n_flags & RATE_MCS_SGI_MSK) @@ -2688,9 +2287,6 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, lq_sta->flush_timer = 0; lq_sta->supp_rates = sta->supp_rates[sband->band]; - for (j = 0; j < LQ_SIZE; j++) - for (i = 0; i < IWL_RATE_COUNT; i++) - rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]); IWL_DEBUG_RATE(mvm, "LQ: *** rate scale station global init for station %d ***\n", @@ -2727,16 +2323,10 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, lq_sta->active_mimo2_rate &= ~((u16)0x2); lq_sta->active_mimo2_rate <<= IWL_FIRST_OFDM_RATE; - lq_sta->active_mimo3_rate = ht_cap->mcs.rx_mask[2] << 1; - lq_sta->active_mimo3_rate |= ht_cap->mcs.rx_mask[2] & 0x1; - lq_sta->active_mimo3_rate &= ~((u16)0x2); - lq_sta->active_mimo3_rate <<= IWL_FIRST_OFDM_RATE; - IWL_DEBUG_RATE(mvm, - "SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n", + "SISO-RATE=%X MIMO2-RATE=%X\n", lq_sta->active_siso_rate, - lq_sta->active_mimo2_rate, - lq_sta->active_mimo3_rate); + lq_sta->active_mimo2_rate); /* These values will be overridden later */ lq_sta->lq.single_stream_ant_msk = @@ -2780,7 +2370,7 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq_cmd = &lq_sta->lq; /* Override starting rate (index 0) if needed for debug purposes */ - rs_dbgfs_set_mcs(lq_sta, &new_rate, index); + rs_dbgfs_set_mcs(lq_sta, &new_rate); /* Interpret new_rate (rate_n_flags) */ rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, @@ -2827,7 +2417,7 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, } /* Override next rate if needed for debug purposes */ - rs_dbgfs_set_mcs(lq_sta, &new_rate, index); + rs_dbgfs_set_mcs(lq_sta, &new_rate); /* Fill next table entry */ lq_cmd->rs_table[index] = @@ -2869,7 +2459,7 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, use_ht_possible = 0; /* Override next rate if needed for debug purposes */ - rs_dbgfs_set_mcs(lq_sta, &new_rate, index); + rs_dbgfs_set_mcs(lq_sta, &new_rate); /* Fill next table entry */ lq_cmd->rs_table[index] = cpu_to_le32(new_rate); @@ -2914,7 +2504,7 @@ static void rs_free_sta(void *mvm_r, struct ieee80211_sta *sta, #ifdef CONFIG_MAC80211_DEBUGFS static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, - u32 *rate_n_flags, int index) + u32 *rate_n_flags) { struct iwl_mvm *mvm; u8 valid_tx_ant; @@ -2999,8 +2589,7 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, (is_legacy(tbl->lq_type)) ? "legacy" : "HT"); if (is_Ht(tbl->lq_type)) { desc += sprintf(buff+desc, " %s", - (is_siso(tbl->lq_type)) ? "SISO" : - ((is_mimo2(tbl->lq_type)) ? "MIMO2" : "MIMO3")); + (is_siso(tbl->lq_type)) ? "SISO" : "MIMO2"); desc += sprintf(buff+desc, " %s", (tbl->is_ht40) ? "40MHz" : "20MHz"); desc += sprintf(buff+desc, " %s %s %s\n", @@ -3100,32 +2689,6 @@ static const struct file_operations rs_sta_dbgfs_stats_table_ops = { .llseek = default_llseek, }; -static ssize_t rs_sta_dbgfs_rate_scale_data_read(struct file *file, - char __user *user_buf, size_t count, loff_t *ppos) -{ - struct iwl_lq_sta *lq_sta = file->private_data; - struct iwl_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl]; - char buff[120]; - int desc = 0; - - if (is_Ht(tbl->lq_type)) - desc += sprintf(buff+desc, - "Bit Rate= %d Mb/s\n", - tbl->expected_tpt[lq_sta->last_txrate_idx]); - else - desc += sprintf(buff+desc, - "Bit Rate= %d Mb/s\n", - iwl_rates[lq_sta->last_txrate_idx].ieee >> 1); - - return simple_read_from_buffer(user_buf, count, ppos, buff, desc); -} - -static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = { - .read = rs_sta_dbgfs_rate_scale_data_read, - .open = simple_open, - .llseek = default_llseek, -}; - static void rs_add_debugfs(void *mvm, void *mvm_sta, struct dentry *dir) { struct iwl_lq_sta *lq_sta = mvm_sta; @@ -3135,9 +2698,6 @@ static void rs_add_debugfs(void *mvm, void *mvm_sta, struct dentry *dir) lq_sta->rs_sta_dbgfs_stats_table_file = debugfs_create_file("rate_stats_table", S_IRUSR, dir, lq_sta, &rs_sta_dbgfs_stats_table_ops); - lq_sta->rs_sta_dbgfs_rate_scale_data_file = - debugfs_create_file("rate_scale_data", S_IRUSR, dir, - lq_sta, &rs_sta_dbgfs_rate_scale_data_ops); lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file = debugfs_create_u8("tx_agg_tid_enable", S_IRUSR | S_IWUSR, dir, &lq_sta->tx_agg_tid_en); @@ -3148,7 +2708,6 @@ static void rs_remove_debugfs(void *mvm, void *mvm_sta) struct iwl_lq_sta *lq_sta = mvm_sta; debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file); debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file); debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file); } #endif @@ -3159,8 +2718,9 @@ static void rs_remove_debugfs(void *mvm, void *mvm_sta) * station is added we ignore it. */ static void rs_rate_init_stub(void *mvm_r, - struct ieee80211_supported_band *sband, - struct ieee80211_sta *sta, void *mvm_sta) + struct ieee80211_supported_band *sband, + struct cfg80211_chan_def *chandef, + struct ieee80211_sta *sta, void *mvm_sta) { } static struct rate_control_ops rs_mvm_ops = { @@ -3193,13 +2753,14 @@ void iwl_mvm_rate_control_unregister(void) * iwl_mvm_tx_protection - Gets LQ command, change it to enable/disable * Tx protection, according to this rquest and previous requests, * and send the LQ command. - * @lq: The LQ command * @mvmsta: The station * @enable: Enable Tx protection? */ -int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, - struct iwl_mvm_sta *mvmsta, bool enable) +int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, + bool enable) { + struct iwl_lq_cmd *lq = &mvmsta->lq_sta.lq; + lockdep_assert_held(&mvm->mutex); if (enable) { |