diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rs.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rs.h | 154 |
1 files changed, 71 insertions, 83 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.h b/drivers/net/wireless/iwlwifi/mvm/rs.h index 5d5344f7070..7bc6404f698 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.h +++ b/drivers/net/wireless/iwlwifi/mvm/rs.h @@ -1,6 +1,6 @@ /****************************************************************************** * - * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved. + * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. * * 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 @@ -155,38 +155,7 @@ enum { #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */ #define IWL_RATE_HIGH_TH 10880 /* 85% */ #define IWL_RATE_INCREASE_TH 6400 /* 50% */ -#define IWL_RATE_DECREASE_TH 1920 /* 15% */ - -/* possible actions when in legacy mode */ -enum { - IWL_LEGACY_SWITCH_ANTENNA, - IWL_LEGACY_SWITCH_SISO, - IWL_LEGACY_SWITCH_MIMO2, - IWL_LEGACY_FIRST_ACTION = IWL_LEGACY_SWITCH_ANTENNA, - IWL_LEGACY_LAST_ACTION = IWL_LEGACY_SWITCH_MIMO2, -}; - -/* possible actions when in siso mode */ -enum { - IWL_SISO_SWITCH_ANTENNA, - IWL_SISO_SWITCH_MIMO2, - IWL_SISO_SWITCH_GI, - IWL_SISO_FIRST_ACTION = IWL_SISO_SWITCH_ANTENNA, - IWL_SISO_LAST_ACTION = IWL_SISO_SWITCH_GI, -}; - -/* possible actions when in mimo mode */ -enum { - IWL_MIMO2_SWITCH_SISO_A, - IWL_MIMO2_SWITCH_SISO_B, - IWL_MIMO2_SWITCH_GI, - IWL_MIMO2_FIRST_ACTION = IWL_MIMO2_SWITCH_SISO_A, - IWL_MIMO2_LAST_ACTION = IWL_MIMO2_SWITCH_GI, -}; - -#define IWL_MAX_SEARCH IWL_MIMO2_LAST_ACTION - -#define IWL_ACTION_LIMIT 3 /* # possible actions */ +#define RS_SR_FORCE_DECREASE 1920 /* 15% */ #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ #define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) @@ -224,22 +193,45 @@ enum iwl_table_type { LQ_MAX, }; -#define is_legacy(tbl) (((tbl) == LQ_LEGACY_G) || ((tbl) == LQ_LEGACY_A)) -#define is_ht_siso(tbl) ((tbl) == LQ_HT_SISO) -#define is_ht_mimo2(tbl) ((tbl) == LQ_HT_MIMO2) -#define is_vht_siso(tbl) ((tbl) == LQ_VHT_SISO) -#define is_vht_mimo2(tbl) ((tbl) == LQ_VHT_MIMO2) -#define is_siso(tbl) (is_ht_siso(tbl) || is_vht_siso(tbl)) -#define is_mimo2(tbl) (is_ht_mimo2(tbl) || is_vht_mimo2(tbl)) -#define is_mimo(tbl) (is_mimo2(tbl)) -#define is_ht(tbl) (is_ht_siso(tbl) || is_ht_mimo2(tbl)) -#define is_vht(tbl) (is_vht_siso(tbl) || is_vht_mimo2(tbl)) -#define is_a_band(tbl) ((tbl) == LQ_LEGACY_A) -#define is_g_band(tbl) ((tbl) == LQ_LEGACY_G) - -#define is_ht20(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_20) -#define is_ht40(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_40) -#define is_ht80(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_80) +struct rs_rate { + int index; + enum iwl_table_type type; + u8 ant; + u32 bw; + bool sgi; +}; + + +#define is_type_legacy(type) (((type) == LQ_LEGACY_G) || \ + ((type) == LQ_LEGACY_A)) +#define is_type_ht_siso(type) ((type) == LQ_HT_SISO) +#define is_type_ht_mimo2(type) ((type) == LQ_HT_MIMO2) +#define is_type_vht_siso(type) ((type) == LQ_VHT_SISO) +#define is_type_vht_mimo2(type) ((type) == LQ_VHT_MIMO2) +#define is_type_siso(type) (is_type_ht_siso(type) || is_type_vht_siso(type)) +#define is_type_mimo2(type) (is_type_ht_mimo2(type) || is_type_vht_mimo2(type)) +#define is_type_mimo(type) (is_type_mimo2(type)) +#define is_type_ht(type) (is_type_ht_siso(type) || is_type_ht_mimo2(type)) +#define is_type_vht(type) (is_type_vht_siso(type) || is_type_vht_mimo2(type)) +#define is_type_a_band(type) ((type) == LQ_LEGACY_A) +#define is_type_g_band(type) ((type) == LQ_LEGACY_G) + +#define is_legacy(rate) is_type_legacy((rate)->type) +#define is_ht_siso(rate) is_type_ht_siso((rate)->type) +#define is_ht_mimo2(rate) is_type_ht_mimo2((rate)->type) +#define is_vht_siso(rate) is_type_vht_siso((rate)->type) +#define is_vht_mimo2(rate) is_type_vht_mimo2((rate)->type) +#define is_siso(rate) is_type_siso((rate)->type) +#define is_mimo2(rate) is_type_mimo2((rate)->type) +#define is_mimo(rate) is_type_mimo((rate)->type) +#define is_ht(rate) is_type_ht((rate)->type) +#define is_vht(rate) is_type_vht((rate)->type) +#define is_a_band(rate) is_type_a_band((rate)->type) +#define is_g_band(rate) is_type_g_band((rate)->type) + +#define is_ht20(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_20) +#define is_ht40(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_40) +#define is_ht80(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_80) #define IWL_MAX_MCS_DISPLAY_SIZE 12 @@ -257,7 +249,23 @@ struct iwl_rate_scale_data { s32 success_ratio; /* per-cent * 128 */ s32 counter; /* number of frames attempted */ s32 average_tpt; /* success ratio * expected throughput */ - unsigned long stamp; +}; + +/* Possible Tx columns + * Tx Column = a combo of legacy/siso/mimo x antenna x SGI + */ +enum rs_column { + RS_COLUMN_LEGACY_ANT_A = 0, + RS_COLUMN_LEGACY_ANT_B, + RS_COLUMN_SISO_ANT_A, + RS_COLUMN_SISO_ANT_B, + RS_COLUMN_SISO_ANT_A_SGI, + RS_COLUMN_SISO_ANT_B_SGI, + RS_COLUMN_MIMO2, + RS_COLUMN_MIMO2_SGI, + + RS_COLUMN_LAST = RS_COLUMN_MIMO2_SGI, + RS_COLUMN_INVALID, }; /** @@ -267,17 +275,18 @@ struct iwl_rate_scale_data { * one for "active", and one for "search". */ struct iwl_scale_tbl_info { - enum iwl_table_type lq_type; - u8 ant_type; - u8 is_SGI; /* 1 = short guard interval */ - u32 bw; /* channel bandwidth; RATE_MCS_CHAN_WIDTH_XX */ - u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */ - u8 max_search; /* maximun number of tables we can search */ + struct rs_rate rate; + enum rs_column column; s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ - u32 current_rate; /* rate_n_flags, uCode API format */ struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ }; +enum { + RS_STATE_SEARCH_CYCLE_STARTED, + RS_STATE_SEARCH_CYCLE_ENDED, + RS_STATE_STAY_IN_COLUMN, +}; + /** * struct iwl_lq_sta -- driver's rate scaling private structure * @@ -285,8 +294,7 @@ struct iwl_scale_tbl_info { */ struct iwl_lq_sta { u8 active_tbl; /* index of active table, range 0-1 */ - u8 enable_counter; /* indicates HT mode */ - u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */ + u8 rs_state; /* RS_STATE_* */ u8 search_better_tbl; /* 1: currently trying alternate mode */ s32 last_tpt; @@ -299,12 +307,13 @@ struct iwl_lq_sta { u32 total_success; /* total successful frames, any/all rates */ u64 flush_timer; /* time staying in mode before new search */ - u8 action_counter; /* # mode-switch actions tried */ + u32 visited_columns; /* Bitmask marking which Tx columns were + * explored during a search cycle + */ bool is_vht; enum ieee80211_band band; /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ - u32 supp_rates; u16 active_legacy_rate; u16 active_siso_rate; u16 active_mimo2_rate; @@ -328,32 +337,11 @@ struct iwl_lq_sta { u32 last_rate_n_flags; /* packets destined for this STA are aggregated */ u8 is_agg; - /* BT traffic this sta was last updated in */ - u8 last_bt_traffic; -}; - -enum iwl_bt_coex_profile_traffic_load { - IWL_BT_COEX_TRAFFIC_LOAD_NONE = 0, - IWL_BT_COEX_TRAFFIC_LOAD_LOW = 1, - IWL_BT_COEX_TRAFFIC_LOAD_HIGH = 2, - IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS = 3, -/* - * There are no more even though below is a u8, the - * indication from the BT device only has two bits. - */ }; - -static inline u8 num_of_ant(u8 mask) -{ - return !!((mask) & ANT_A) + - !!((mask) & ANT_B) + - !!((mask) & ANT_C); -} - /* Initialize station's rate scaling information after adding station */ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, - enum ieee80211_band band); + enum ieee80211_band band, bool init); /** * iwl_rate_control_register - Register the rate control algorithm callbacks |