+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2015 Intel Mobile Communications GmbH
- *
- * 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 <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#ifndef __rs_h__
-#define __rs_h__
-
-#include <net/mac80211.h>
-
-#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 TPC_MAX_REDUCTION 15
-#define TPC_NO_REDUCTION 0
-#define TPC_INVALID 0xff
-
-#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_ALL_TID 0xff
-
-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;
- bool ldpc;
- bool stbc;
- bool bfer;
-};
-
-
-#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_COUNT = RS_COLUMN_LAST + 1,
- RS_COLUMN_INVALID,
-};
-
-enum rs_ss_force_opt {
- RS_SS_FORCE_NONE = 0,
- RS_SS_FORCE_STBC,
- RS_SS_FORCE_BFER,
- RS_SS_FORCE_SISO,
-};
-
-/* Packet stats per rate */
-struct rs_rate_stats {
- u64 success;
- u64 total;
-};
-
-/**
- * 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
- */
- u64 last_tx;
- bool is_vht;
- bool ldpc; /* LDPC Rx is supported by the STA */
- bool stbc_capable; /* Tx STBC is supported by chip and Rx by STA */
- bool bfer_capable; /* Remote supports beamformee and we BFer */
-
- enum ieee80211_band band;
-
- /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */
- unsigned long active_legacy_rate;
- unsigned long active_siso_rate;
- unsigned long active_mimo2_rate;
-
- /* Highest rate per Tx mode */
- u8 max_legacy_rate_idx;
- u8 max_siso_rate_idx;
- u8 max_mimo2_rate_idx;
-
- /* Optimal rate based on RSSI and STA caps.
- * Used only to reflect link speed to userspace.
- */
- struct rs_rate optimal_rate;
- unsigned long optimal_rate_mask;
- const struct rs_init_rate_info *optimal_rates;
- int optimal_nentries;
-
- 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;
-
- /* 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;
-
- /* persistent fields - initialized only once - keep last! */
- struct lq_sta_pers {
-#ifdef CONFIG_MAC80211_DEBUGFS
- u32 dbg_fixed_rate;
- u8 dbg_fixed_txp_reduction;
-
- /* force STBC/BFER/SISO for testing */
- enum rs_ss_force_opt ss_force;
-#endif
- u8 chains;
- s8 chain_signal[IEEE80211_MAX_CHAINS];
- s8 last_rssi;
- struct rs_rate_stats tx_stats[RS_COLUMN_COUNT][IWL_RATE_COUNT];
- struct iwl_mvm *drv;
- } pers;
-};
-
-/* 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);
-
-/* Notify RS about Tx status */
-void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
- int tid, struct ieee80211_tx_info *info);
-
-/**
- * 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__ */
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