/****************************************************************************** * * 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 * 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: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #ifndef __rs_h__ #define __rs_h__ #include #include "iwl-config.h" #include "fw-api.h" #include "iwl-trans.h" struct iwl_rs_rate_info { u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */ u8 plcp_ht_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */ u8 plcp_ht_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */ u8 plcp_vht_siso; u8 plcp_vht_mimo2; u8 prev_rs; /* previous rate used in rs algo */ u8 next_rs; /* next rate used in rs algo */ }; #define IWL_RATE_60M_PLCP 3 enum { IWL_RATE_INVM_INDEX = IWL_RATE_COUNT, IWL_RATE_INVALID = IWL_RATE_COUNT, }; #define LINK_QUAL_MAX_RETRY_NUM 16 enum { IWL_RATE_6M_INDEX_TABLE = 0, IWL_RATE_9M_INDEX_TABLE, IWL_RATE_12M_INDEX_TABLE, IWL_RATE_18M_INDEX_TABLE, IWL_RATE_24M_INDEX_TABLE, IWL_RATE_36M_INDEX_TABLE, IWL_RATE_48M_INDEX_TABLE, IWL_RATE_54M_INDEX_TABLE, IWL_RATE_1M_INDEX_TABLE, IWL_RATE_2M_INDEX_TABLE, IWL_RATE_5M_INDEX_TABLE, IWL_RATE_11M_INDEX_TABLE, IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX - 1, }; /* #define vs. enum to keep from defaulting to 'large integer' */ #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX) #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX) #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX) #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX) #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX) #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX) #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX) #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX) #define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX) #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX) #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX) #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX) #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX) /* uCode API values for HT/VHT bit rates */ enum { IWL_RATE_HT_SISO_MCS_0_PLCP = 0, IWL_RATE_HT_SISO_MCS_1_PLCP = 1, IWL_RATE_HT_SISO_MCS_2_PLCP = 2, IWL_RATE_HT_SISO_MCS_3_PLCP = 3, IWL_RATE_HT_SISO_MCS_4_PLCP = 4, IWL_RATE_HT_SISO_MCS_5_PLCP = 5, IWL_RATE_HT_SISO_MCS_6_PLCP = 6, IWL_RATE_HT_SISO_MCS_7_PLCP = 7, IWL_RATE_HT_MIMO2_MCS_0_PLCP = 0x8, IWL_RATE_HT_MIMO2_MCS_1_PLCP = 0x9, IWL_RATE_HT_MIMO2_MCS_2_PLCP = 0xA, IWL_RATE_HT_MIMO2_MCS_3_PLCP = 0xB, IWL_RATE_HT_MIMO2_MCS_4_PLCP = 0xC, IWL_RATE_HT_MIMO2_MCS_5_PLCP = 0xD, IWL_RATE_HT_MIMO2_MCS_6_PLCP = 0xE, IWL_RATE_HT_MIMO2_MCS_7_PLCP = 0xF, IWL_RATE_VHT_SISO_MCS_0_PLCP = 0, IWL_RATE_VHT_SISO_MCS_1_PLCP = 1, IWL_RATE_VHT_SISO_MCS_2_PLCP = 2, IWL_RATE_VHT_SISO_MCS_3_PLCP = 3, IWL_RATE_VHT_SISO_MCS_4_PLCP = 4, IWL_RATE_VHT_SISO_MCS_5_PLCP = 5, IWL_RATE_VHT_SISO_MCS_6_PLCP = 6, IWL_RATE_VHT_SISO_MCS_7_PLCP = 7, IWL_RATE_VHT_SISO_MCS_8_PLCP = 8, IWL_RATE_VHT_SISO_MCS_9_PLCP = 9, IWL_RATE_VHT_MIMO2_MCS_0_PLCP = 0x10, IWL_RATE_VHT_MIMO2_MCS_1_PLCP = 0x11, IWL_RATE_VHT_MIMO2_MCS_2_PLCP = 0x12, IWL_RATE_VHT_MIMO2_MCS_3_PLCP = 0x13, IWL_RATE_VHT_MIMO2_MCS_4_PLCP = 0x14, IWL_RATE_VHT_MIMO2_MCS_5_PLCP = 0x15, IWL_RATE_VHT_MIMO2_MCS_6_PLCP = 0x16, IWL_RATE_VHT_MIMO2_MCS_7_PLCP = 0x17, IWL_RATE_VHT_MIMO2_MCS_8_PLCP = 0x18, IWL_RATE_VHT_MIMO2_MCS_9_PLCP = 0x19, IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_HT_MIMO2_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_VHT_SISO_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_VHT_MIMO2_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_HT_SISO_MCS_8_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_HT_SISO_MCS_9_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_HT_MIMO2_MCS_8_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, IWL_RATE_HT_MIMO2_MCS_9_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, }; #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1) #define IWL_INVALID_VALUE -1 #define IWL_MIN_RSSI_VAL -100 #define IWL_MAX_RSSI_VAL 0 /* These values specify how many Tx frame attempts before * searching for a new modulation mode */ #define IWL_LEGACY_FAILURE_LIMIT 160 #define IWL_LEGACY_SUCCESS_LIMIT 480 #define IWL_LEGACY_TABLE_COUNT 160 #define IWL_NONE_LEGACY_FAILURE_LIMIT 400 #define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500 #define IWL_NONE_LEGACY_TABLE_COUNT 1500 /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */ #define IWL_RS_GOOD_RATIO 12800 /* 100% */ #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */ #define IWL_RATE_HIGH_TH 10880 /* 85% */ #define IWL_RATE_INCREASE_TH 6400 /* 50% */ #define RS_SR_FORCE_DECREASE 1920 /* 15% */ #define TPC_SR_FORCE_INCREASE 9600 /* 75% */ #define TPC_SR_NO_INCREASE 10880 /* 85% */ #define TPC_TX_POWER_STEP 3 #define TPC_MAX_REDUCTION 15 #define TPC_NO_REDUCTION 0 #define TPC_INVALID 0xff #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ #define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) #define LINK_QUAL_AGG_TIME_LIMIT_MIN (100) #define LINK_QUAL_AGG_DISABLE_START_DEF (3) #define LINK_QUAL_AGG_DISABLE_START_MAX (255) #define LINK_QUAL_AGG_DISABLE_START_MIN (0) #define LINK_QUAL_AGG_FRAME_LIMIT_DEF (63) #define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63) #define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0) #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */ /* load per tid defines for A-MPDU activation */ #define IWL_AGG_TPT_THREHOLD 0 #define IWL_AGG_LOAD_THRESHOLD 10 #define IWL_AGG_ALL_TID 0xff #define TID_QUEUE_CELL_SPACING 50 /*mS */ #define TID_QUEUE_MAX_SIZE 20 #define TID_ROUND_VALUE 5 /* mS */ #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING) #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y)) enum iwl_table_type { LQ_NONE, LQ_LEGACY_G, /* legacy types */ LQ_LEGACY_A, LQ_HT_SISO, /* HT types */ LQ_HT_MIMO2, LQ_VHT_SISO, /* VHT types */ LQ_VHT_MIMO2, LQ_MAX, }; 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 struct iwl_rate_mcs_info { char mbps[IWL_MAX_MCS_DISPLAY_SIZE]; char mcs[IWL_MAX_MCS_DISPLAY_SIZE]; }; /** * struct iwl_rate_scale_data -- tx success history for one rate */ struct iwl_rate_scale_data { u64 data; /* bitmap of successful frames */ s32 success_counter; /* number of frames successful */ s32 success_ratio; /* per-cent * 128 */ s32 counter; /* number of frames attempted */ s32 average_tpt; /* success ratio * expected throughput */ }; /* 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, }; /** * struct iwl_scale_tbl_info -- tx params and success history for all rates * * There are two of these in struct iwl_lq_sta, * one for "active", and one for "search". */ struct iwl_scale_tbl_info { struct rs_rate rate; enum rs_column column; const u16 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ /* per txpower-reduction history */ struct iwl_rate_scale_data tpc_win[TPC_MAX_REDUCTION + 1]; }; 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 * * Pointer to this gets passed back and forth between driver and mac80211. */ struct iwl_lq_sta { u8 active_tbl; /* index of active table, range 0-1 */ u8 rs_state; /* RS_STATE_* */ u8 search_better_tbl; /* 1: currently trying alternate mode */ s32 last_tpt; /* The following determine when to search for a new mode */ u32 table_count_limit; u32 max_failure_limit; /* # failed frames before new search */ u32 max_success_limit; /* # successful frames before new search */ u32 table_count; u32 total_failed; /* total failed frames, any/all rates */ u32 total_success; /* total successful frames, any/all rates */ u64 flush_timer; /* time staying in mode before new search */ 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. */ u16 active_legacy_rate; u16 active_siso_rate; u16 active_mimo2_rate; s8 max_rate_idx; /* Max rate set by user */ u8 missed_rate_counter; struct iwl_lq_cmd lq; struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ u8 tx_agg_tid_en; #ifdef CONFIG_MAC80211_DEBUGFS struct dentry *rs_sta_dbgfs_scale_table_file; struct dentry *rs_sta_dbgfs_stats_table_file; struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; u32 dbg_fixed_rate; #endif struct iwl_mvm *drv; /* used to be in sta_info */ int last_txrate_idx; /* last tx rate_n_flags */ u32 last_rate_n_flags; /* packets destined for this STA are aggregated */ u8 is_agg; /* tx power reduce for this sta */ int tpc_reduce; }; /* 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, bool init); /** * iwl_rate_control_register - Register the rate control algorithm callbacks * * Since the rate control algorithm is hardware specific, there is no need * or reason to place it as a stand alone module. The driver can call * iwl_rate_control_register in order to register the rate control callbacks * with the mac80211 subsystem. This should be performed prior to calling * ieee80211_register_hw * */ int iwl_mvm_rate_control_register(void); /** * iwl_rate_control_unregister - Unregister the rate control callbacks * * This should be called after calling ieee80211_unregister_hw, but before * the driver is unloaded. */ void iwl_mvm_rate_control_unregister(void); struct iwl_mvm_sta; int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, bool enable); #endif /* __rs__ */