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457 lines
14 KiB
457 lines
14 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/****************************************************************************** |
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* |
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* Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. |
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* Copyright(c) 2015 Intel Mobile Communications GmbH |
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* Copyright(c) 2017 Intel Deutschland GmbH |
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* Copyright(c) 2018 - 2019 Intel Corporation |
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* |
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* Contact Information: |
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* Intel Linux Wireless <[email protected]> |
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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* |
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*****************************************************************************/ |
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#ifndef __rs_h__ |
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#define __rs_h__ |
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#include <net/mac80211.h> |
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#include "iwl-config.h" |
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#include "fw-api.h" |
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#include "iwl-trans.h" |
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#define RS_NAME "iwl-mvm-rs" |
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struct iwl_rs_rate_info { |
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u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */ |
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u8 plcp_ht_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */ |
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u8 plcp_ht_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */ |
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u8 plcp_vht_siso; |
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u8 plcp_vht_mimo2; |
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u8 prev_rs; /* previous rate used in rs algo */ |
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u8 next_rs; /* next rate used in rs algo */ |
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}; |
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#define IWL_RATE_60M_PLCP 3 |
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enum { |
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IWL_RATE_INVM_INDEX = IWL_RATE_COUNT, |
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IWL_RATE_INVALID = IWL_RATE_COUNT, |
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}; |
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#define LINK_QUAL_MAX_RETRY_NUM 16 |
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enum { |
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IWL_RATE_6M_INDEX_TABLE = 0, |
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IWL_RATE_9M_INDEX_TABLE, |
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IWL_RATE_12M_INDEX_TABLE, |
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IWL_RATE_18M_INDEX_TABLE, |
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IWL_RATE_24M_INDEX_TABLE, |
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IWL_RATE_36M_INDEX_TABLE, |
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IWL_RATE_48M_INDEX_TABLE, |
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IWL_RATE_54M_INDEX_TABLE, |
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IWL_RATE_1M_INDEX_TABLE, |
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IWL_RATE_2M_INDEX_TABLE, |
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IWL_RATE_5M_INDEX_TABLE, |
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IWL_RATE_11M_INDEX_TABLE, |
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IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX - 1, |
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}; |
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/* #define vs. enum to keep from defaulting to 'large integer' */ |
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#define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX) |
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#define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX) |
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#define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX) |
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#define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX) |
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#define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX) |
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#define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX) |
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#define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX) |
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#define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX) |
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#define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX) |
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#define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX) |
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#define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX) |
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#define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX) |
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#define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX) |
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/* uCode API values for HT/VHT bit rates */ |
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enum { |
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IWL_RATE_HT_SISO_MCS_0_PLCP = 0, |
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IWL_RATE_HT_SISO_MCS_1_PLCP = 1, |
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IWL_RATE_HT_SISO_MCS_2_PLCP = 2, |
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IWL_RATE_HT_SISO_MCS_3_PLCP = 3, |
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IWL_RATE_HT_SISO_MCS_4_PLCP = 4, |
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IWL_RATE_HT_SISO_MCS_5_PLCP = 5, |
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IWL_RATE_HT_SISO_MCS_6_PLCP = 6, |
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IWL_RATE_HT_SISO_MCS_7_PLCP = 7, |
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IWL_RATE_HT_MIMO2_MCS_0_PLCP = 0x8, |
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IWL_RATE_HT_MIMO2_MCS_1_PLCP = 0x9, |
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IWL_RATE_HT_MIMO2_MCS_2_PLCP = 0xA, |
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IWL_RATE_HT_MIMO2_MCS_3_PLCP = 0xB, |
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IWL_RATE_HT_MIMO2_MCS_4_PLCP = 0xC, |
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IWL_RATE_HT_MIMO2_MCS_5_PLCP = 0xD, |
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IWL_RATE_HT_MIMO2_MCS_6_PLCP = 0xE, |
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IWL_RATE_HT_MIMO2_MCS_7_PLCP = 0xF, |
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IWL_RATE_VHT_SISO_MCS_0_PLCP = 0, |
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IWL_RATE_VHT_SISO_MCS_1_PLCP = 1, |
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IWL_RATE_VHT_SISO_MCS_2_PLCP = 2, |
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IWL_RATE_VHT_SISO_MCS_3_PLCP = 3, |
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IWL_RATE_VHT_SISO_MCS_4_PLCP = 4, |
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IWL_RATE_VHT_SISO_MCS_5_PLCP = 5, |
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IWL_RATE_VHT_SISO_MCS_6_PLCP = 6, |
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IWL_RATE_VHT_SISO_MCS_7_PLCP = 7, |
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IWL_RATE_VHT_SISO_MCS_8_PLCP = 8, |
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IWL_RATE_VHT_SISO_MCS_9_PLCP = 9, |
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IWL_RATE_VHT_MIMO2_MCS_0_PLCP = 0x10, |
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IWL_RATE_VHT_MIMO2_MCS_1_PLCP = 0x11, |
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IWL_RATE_VHT_MIMO2_MCS_2_PLCP = 0x12, |
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IWL_RATE_VHT_MIMO2_MCS_3_PLCP = 0x13, |
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IWL_RATE_VHT_MIMO2_MCS_4_PLCP = 0x14, |
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IWL_RATE_VHT_MIMO2_MCS_5_PLCP = 0x15, |
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IWL_RATE_VHT_MIMO2_MCS_6_PLCP = 0x16, |
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IWL_RATE_VHT_MIMO2_MCS_7_PLCP = 0x17, |
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IWL_RATE_VHT_MIMO2_MCS_8_PLCP = 0x18, |
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IWL_RATE_VHT_MIMO2_MCS_9_PLCP = 0x19, |
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IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_HT_MIMO2_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_VHT_SISO_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_VHT_MIMO2_MCS_INV_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_HT_SISO_MCS_8_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_HT_SISO_MCS_9_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_HT_MIMO2_MCS_8_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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IWL_RATE_HT_MIMO2_MCS_9_PLCP = IWL_RATE_HT_SISO_MCS_INV_PLCP, |
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}; |
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#define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1) |
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#define IWL_INVALID_VALUE -1 |
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#define TPC_MAX_REDUCTION 15 |
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#define TPC_NO_REDUCTION 0 |
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#define TPC_INVALID 0xff |
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#define LINK_QUAL_AGG_FRAME_LIMIT_DEF (63) |
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#define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63) |
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/* |
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* FIXME - various places in firmware API still use u8, |
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* e.g. LQ command and SCD config command. |
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* This should be 256 instead. |
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*/ |
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#define LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF (255) |
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#define LINK_QUAL_AGG_FRAME_LIMIT_GEN2_MAX (255) |
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#define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0) |
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#define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */ |
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/* load per tid defines for A-MPDU activation */ |
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#define IWL_AGG_TPT_THREHOLD 0 |
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#define IWL_AGG_ALL_TID 0xff |
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enum iwl_table_type { |
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LQ_NONE, |
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LQ_LEGACY_G, /* legacy types */ |
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LQ_LEGACY_A, |
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LQ_HT_SISO, /* HT types */ |
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LQ_HT_MIMO2, |
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LQ_VHT_SISO, /* VHT types */ |
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LQ_VHT_MIMO2, |
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LQ_HE_SISO, /* HE types */ |
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LQ_HE_MIMO2, |
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LQ_MAX, |
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}; |
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struct rs_rate { |
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int index; |
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enum iwl_table_type type; |
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u8 ant; |
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u32 bw; |
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bool sgi; |
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bool ldpc; |
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bool stbc; |
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bool bfer; |
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}; |
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#define is_type_legacy(type) (((type) == LQ_LEGACY_G) || \ |
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((type) == LQ_LEGACY_A)) |
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#define is_type_ht_siso(type) ((type) == LQ_HT_SISO) |
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#define is_type_ht_mimo2(type) ((type) == LQ_HT_MIMO2) |
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#define is_type_vht_siso(type) ((type) == LQ_VHT_SISO) |
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#define is_type_vht_mimo2(type) ((type) == LQ_VHT_MIMO2) |
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#define is_type_he_siso(type) ((type) == LQ_HE_SISO) |
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#define is_type_he_mimo2(type) ((type) == LQ_HE_MIMO2) |
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#define is_type_siso(type) (is_type_ht_siso(type) || is_type_vht_siso(type) || \ |
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is_type_he_siso(type)) |
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#define is_type_mimo2(type) (is_type_ht_mimo2(type) || \ |
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is_type_vht_mimo2(type) || is_type_he_mimo2(type)) |
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#define is_type_mimo(type) (is_type_mimo2(type)) |
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#define is_type_ht(type) (is_type_ht_siso(type) || is_type_ht_mimo2(type)) |
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#define is_type_vht(type) (is_type_vht_siso(type) || is_type_vht_mimo2(type)) |
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#define is_type_he(type) (is_type_he_siso(type) || is_type_he_mimo2(type)) |
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#define is_type_a_band(type) ((type) == LQ_LEGACY_A) |
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#define is_type_g_band(type) ((type) == LQ_LEGACY_G) |
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#define is_legacy(rate) is_type_legacy((rate)->type) |
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#define is_ht_siso(rate) is_type_ht_siso((rate)->type) |
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#define is_ht_mimo2(rate) is_type_ht_mimo2((rate)->type) |
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#define is_vht_siso(rate) is_type_vht_siso((rate)->type) |
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#define is_vht_mimo2(rate) is_type_vht_mimo2((rate)->type) |
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#define is_siso(rate) is_type_siso((rate)->type) |
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#define is_mimo2(rate) is_type_mimo2((rate)->type) |
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#define is_mimo(rate) is_type_mimo((rate)->type) |
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#define is_ht(rate) is_type_ht((rate)->type) |
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#define is_vht(rate) is_type_vht((rate)->type) |
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#define is_he(rate) is_type_he((rate)->type) |
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#define is_a_band(rate) is_type_a_band((rate)->type) |
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#define is_g_band(rate) is_type_g_band((rate)->type) |
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#define is_ht20(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_20) |
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#define is_ht40(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_40) |
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#define is_ht80(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_80) |
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#define is_ht160(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_160) |
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#define IWL_MAX_MCS_DISPLAY_SIZE 12 |
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struct iwl_rate_mcs_info { |
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char mbps[IWL_MAX_MCS_DISPLAY_SIZE]; |
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char mcs[IWL_MAX_MCS_DISPLAY_SIZE]; |
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}; |
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/** |
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* struct iwl_lq_sta_rs_fw - rate and related statistics for RS in FW |
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* @last_rate_n_flags: last rate reported by FW |
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* @sta_id: the id of the station |
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#ifdef CONFIG_MAC80211_DEBUGFS |
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* @dbg_fixed_rate: for debug, use fixed rate if not 0 |
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* @dbg_agg_frame_count_lim: for debug, max number of frames in A-MPDU |
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#endif |
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* @chains: bitmask of chains reported in %chain_signal |
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* @chain_signal: per chain signal strength |
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* @last_rssi: last rssi reported |
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* @drv: pointer back to the driver data |
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*/ |
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struct iwl_lq_sta_rs_fw { |
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/* last tx rate_n_flags */ |
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u32 last_rate_n_flags; |
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/* persistent fields - initialized only once - keep last! */ |
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struct lq_sta_pers_rs_fw { |
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u32 sta_id; |
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#ifdef CONFIG_MAC80211_DEBUGFS |
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u32 dbg_fixed_rate; |
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u16 dbg_agg_frame_count_lim; |
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#endif |
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u8 chains; |
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s8 chain_signal[IEEE80211_MAX_CHAINS]; |
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s8 last_rssi; |
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struct iwl_mvm *drv; |
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} pers; |
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}; |
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/** |
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* struct iwl_rate_scale_data -- tx success history for one rate |
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*/ |
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struct iwl_rate_scale_data { |
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u64 data; /* bitmap of successful frames */ |
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s32 success_counter; /* number of frames successful */ |
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s32 success_ratio; /* per-cent * 128 */ |
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s32 counter; /* number of frames attempted */ |
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s32 average_tpt; /* success ratio * expected throughput */ |
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}; |
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/* Possible Tx columns |
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* Tx Column = a combo of legacy/siso/mimo x antenna x SGI |
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*/ |
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enum rs_column { |
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RS_COLUMN_LEGACY_ANT_A = 0, |
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RS_COLUMN_LEGACY_ANT_B, |
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RS_COLUMN_SISO_ANT_A, |
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RS_COLUMN_SISO_ANT_B, |
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RS_COLUMN_SISO_ANT_A_SGI, |
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RS_COLUMN_SISO_ANT_B_SGI, |
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RS_COLUMN_MIMO2, |
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RS_COLUMN_MIMO2_SGI, |
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RS_COLUMN_LAST = RS_COLUMN_MIMO2_SGI, |
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RS_COLUMN_COUNT = RS_COLUMN_LAST + 1, |
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RS_COLUMN_INVALID, |
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}; |
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enum rs_ss_force_opt { |
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RS_SS_FORCE_NONE = 0, |
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RS_SS_FORCE_STBC, |
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RS_SS_FORCE_BFER, |
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RS_SS_FORCE_SISO, |
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}; |
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/* Packet stats per rate */ |
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struct rs_rate_stats { |
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u64 success; |
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u64 total; |
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}; |
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/** |
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* struct iwl_scale_tbl_info -- tx params and success history for all rates |
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* |
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* There are two of these in struct iwl_lq_sta, |
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* one for "active", and one for "search". |
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*/ |
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struct iwl_scale_tbl_info { |
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struct rs_rate rate; |
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enum rs_column column; |
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const u16 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ |
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struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ |
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/* per txpower-reduction history */ |
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struct iwl_rate_scale_data tpc_win[TPC_MAX_REDUCTION + 1]; |
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}; |
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enum { |
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RS_STATE_SEARCH_CYCLE_STARTED, |
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RS_STATE_SEARCH_CYCLE_ENDED, |
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RS_STATE_STAY_IN_COLUMN, |
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}; |
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/** |
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* struct iwl_lq_sta -- driver's rate scaling private structure |
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* |
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* Pointer to this gets passed back and forth between driver and mac80211. |
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*/ |
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struct iwl_lq_sta { |
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u8 active_tbl; /* index of active table, range 0-1 */ |
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u8 rs_state; /* RS_STATE_* */ |
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u8 search_better_tbl; /* 1: currently trying alternate mode */ |
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s32 last_tpt; |
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/* The following determine when to search for a new mode */ |
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u32 table_count_limit; |
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u32 max_failure_limit; /* # failed frames before new search */ |
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u32 max_success_limit; /* # successful frames before new search */ |
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u32 table_count; |
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u32 total_failed; /* total failed frames, any/all rates */ |
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u32 total_success; /* total successful frames, any/all rates */ |
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u64 flush_timer; /* time staying in mode before new search */ |
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u32 visited_columns; /* Bitmask marking which Tx columns were |
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* explored during a search cycle |
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*/ |
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u64 last_tx; |
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bool is_vht; |
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bool ldpc; /* LDPC Rx is supported by the STA */ |
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bool stbc_capable; /* Tx STBC is supported by chip and Rx by STA */ |
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bool bfer_capable; /* Remote supports beamformee and we BFer */ |
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enum nl80211_band band; |
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/* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ |
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unsigned long active_legacy_rate; |
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unsigned long active_siso_rate; |
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unsigned long active_mimo2_rate; |
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/* Highest rate per Tx mode */ |
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u8 max_legacy_rate_idx; |
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u8 max_siso_rate_idx; |
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u8 max_mimo2_rate_idx; |
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/* Optimal rate based on RSSI and STA caps. |
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* Used only to reflect link speed to userspace. |
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*/ |
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struct rs_rate optimal_rate; |
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unsigned long optimal_rate_mask; |
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const struct rs_init_rate_info *optimal_rates; |
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int optimal_nentries; |
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u8 missed_rate_counter; |
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struct iwl_lq_cmd lq; |
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struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ |
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u8 tx_agg_tid_en; |
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/* last tx rate_n_flags */ |
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u32 last_rate_n_flags; |
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/* packets destined for this STA are aggregated */ |
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u8 is_agg; |
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/* tx power reduce for this sta */ |
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int tpc_reduce; |
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/* persistent fields - initialized only once - keep last! */ |
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struct lq_sta_pers { |
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#ifdef CONFIG_MAC80211_DEBUGFS |
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u32 dbg_fixed_rate; |
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u8 dbg_fixed_txp_reduction; |
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/* force STBC/BFER/SISO for testing */ |
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enum rs_ss_force_opt ss_force; |
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#endif |
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u8 chains; |
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s8 chain_signal[IEEE80211_MAX_CHAINS]; |
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s8 last_rssi; |
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struct rs_rate_stats tx_stats[RS_COLUMN_COUNT][IWL_RATE_COUNT]; |
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struct iwl_mvm *drv; |
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spinlock_t lock; /* for races in reinit/update table */ |
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} pers; |
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}; |
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/* ieee80211_tx_info's status_driver_data[0] is packed with lq color and txp |
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* Note, it's iwlmvm <-> mac80211 interface. |
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* bits 0-7: reduced tx power |
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* bits 8-10: LQ command's color |
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*/ |
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#define RS_DRV_DATA_TXP_MSK 0xff |
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#define RS_DRV_DATA_LQ_COLOR_POS 8 |
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#define RS_DRV_DATA_LQ_COLOR_MSK (7 << RS_DRV_DATA_LQ_COLOR_POS) |
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#define RS_DRV_DATA_LQ_COLOR_GET(_f) (((_f) & RS_DRV_DATA_LQ_COLOR_MSK) >>\ |
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RS_DRV_DATA_LQ_COLOR_POS) |
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#define RS_DRV_DATA_PACK(_c, _p) ((void *)(uintptr_t)\ |
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(((uintptr_t)_p) |\ |
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((_c) << RS_DRV_DATA_LQ_COLOR_POS))) |
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/* Initialize station's rate scaling information after adding station */ |
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void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
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enum nl80211_band band, bool init); |
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/* Notify RS about Tx status */ |
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void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
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int tid, struct ieee80211_tx_info *info, bool ndp); |
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/** |
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* iwl_rate_control_register - Register the rate control algorithm callbacks |
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* |
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* Since the rate control algorithm is hardware specific, there is no need |
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* or reason to place it as a stand alone module. The driver can call |
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* iwl_rate_control_register in order to register the rate control callbacks |
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* with the mac80211 subsystem. This should be performed prior to calling |
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* ieee80211_register_hw |
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* |
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*/ |
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int iwl_mvm_rate_control_register(void); |
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/** |
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* iwl_rate_control_unregister - Unregister the rate control callbacks |
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* |
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* This should be called after calling ieee80211_unregister_hw, but before |
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* the driver is unloaded. |
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*/ |
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void iwl_mvm_rate_control_unregister(void); |
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struct iwl_mvm_sta; |
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int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
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bool enable); |
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#ifdef CONFIG_IWLWIFI_DEBUGFS |
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void iwl_mvm_reset_frame_stats(struct iwl_mvm *mvm); |
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#endif |
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void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta); |
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void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
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enum nl80211_band band, bool update); |
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int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
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bool enable); |
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void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm, |
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struct iwl_rx_cmd_buffer *rxb); |
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u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta); |
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#endif /* __rs__ */
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