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-rw-r--r--drivers/net/wireless/iwlegacy/common.h461
-rw-r--r--drivers/net/wireless/iwlegacy/iwl-legacy-rs.h454
2 files changed, 442 insertions, 473 deletions
diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h
index e83c6ab39fcf..2e66929c34ef 100644
--- a/drivers/net/wireless/iwlegacy/common.h
+++ b/drivers/net/wireless/iwlegacy/common.h
@@ -39,7 +39,6 @@
39#include "iwl-debug.h" 39#include "iwl-debug.h"
40#include "iwl-led.h" 40#include "iwl-led.h"
41#include "iwl-power.h" 41#include "iwl-power.h"
42#include "iwl-legacy-rs.h"
43 42
44struct il_host_cmd; 43struct il_host_cmd;
45struct il_cmd; 44struct il_cmd;
@@ -480,24 +479,6 @@ struct il_station_priv_common {
480 u8 sta_id; 479 u8 sta_id;
481}; 480};
482 481
483/*
484 * il_station_priv: Driver's ilate station information
485 *
486 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
487 * in the structure for use by driver. This structure is places in that
488 * space.
489 *
490 * The common struct MUST be first because it is shared between
491 * 3945 and 4965!
492 */
493struct il_station_priv {
494 struct il_station_priv_common common;
495 struct il_lq_sta lq_sta;
496 atomic_t pending_frames;
497 bool client;
498 bool asleep;
499};
500
501/** 482/**
502 * struct il_vif_priv - driver's ilate per-interface information 483 * struct il_vif_priv - driver's ilate per-interface information
503 * 484 *
@@ -2573,4 +2554,446 @@ struct il_tfd {
2573#define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01 2554#define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01
2574#define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02 2555#define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02
2575 2556
2557struct il_rate_info {
2558 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
2559 u8 plcp_siso; /* uCode API: RATE_SISO_6M_PLCP, etc. */
2560 u8 plcp_mimo2; /* uCode API: RATE_MIMO2_6M_PLCP, etc. */
2561 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
2562 u8 prev_ieee; /* previous rate in IEEE speeds */
2563 u8 next_ieee; /* next rate in IEEE speeds */
2564 u8 prev_rs; /* previous rate used in rs algo */
2565 u8 next_rs; /* next rate used in rs algo */
2566 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
2567 u8 next_rs_tgg; /* next rate used in TGG rs algo */
2568};
2569
2570struct il3945_rate_info {
2571 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
2572 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
2573 u8 prev_ieee; /* previous rate in IEEE speeds */
2574 u8 next_ieee; /* next rate in IEEE speeds */
2575 u8 prev_rs; /* previous rate used in rs algo */
2576 u8 next_rs; /* next rate used in rs algo */
2577 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
2578 u8 next_rs_tgg; /* next rate used in TGG rs algo */
2579 u8 table_rs_idx; /* idx in rate scale table cmd */
2580 u8 prev_table_rs; /* prev in rate table cmd */
2581};
2582
2583
2584/*
2585 * These serve as idxes into
2586 * struct il_rate_info il_rates[RATE_COUNT];
2587 */
2588enum {
2589 RATE_1M_IDX = 0,
2590 RATE_2M_IDX,
2591 RATE_5M_IDX,
2592 RATE_11M_IDX,
2593 RATE_6M_IDX,
2594 RATE_9M_IDX,
2595 RATE_12M_IDX,
2596 RATE_18M_IDX,
2597 RATE_24M_IDX,
2598 RATE_36M_IDX,
2599 RATE_48M_IDX,
2600 RATE_54M_IDX,
2601 RATE_60M_IDX,
2602 RATE_COUNT,
2603 RATE_COUNT_LEGACY = RATE_COUNT - 1, /* Excluding 60M */
2604 RATE_COUNT_3945 = RATE_COUNT - 1,
2605 RATE_INVM_IDX = RATE_COUNT,
2606 RATE_INVALID = RATE_COUNT,
2607};
2608
2609enum {
2610 RATE_6M_IDX_TBL = 0,
2611 RATE_9M_IDX_TBL,
2612 RATE_12M_IDX_TBL,
2613 RATE_18M_IDX_TBL,
2614 RATE_24M_IDX_TBL,
2615 RATE_36M_IDX_TBL,
2616 RATE_48M_IDX_TBL,
2617 RATE_54M_IDX_TBL,
2618 RATE_1M_IDX_TBL,
2619 RATE_2M_IDX_TBL,
2620 RATE_5M_IDX_TBL,
2621 RATE_11M_IDX_TBL,
2622 RATE_INVM_IDX_TBL = RATE_INVM_IDX - 1,
2623};
2624
2625enum {
2626 IL_FIRST_OFDM_RATE = RATE_6M_IDX,
2627 IL39_LAST_OFDM_RATE = RATE_54M_IDX,
2628 IL_LAST_OFDM_RATE = RATE_60M_IDX,
2629 IL_FIRST_CCK_RATE = RATE_1M_IDX,
2630 IL_LAST_CCK_RATE = RATE_11M_IDX,
2631};
2632
2633/* #define vs. enum to keep from defaulting to 'large integer' */
2634#define RATE_6M_MASK (1 << RATE_6M_IDX)
2635#define RATE_9M_MASK (1 << RATE_9M_IDX)
2636#define RATE_12M_MASK (1 << RATE_12M_IDX)
2637#define RATE_18M_MASK (1 << RATE_18M_IDX)
2638#define RATE_24M_MASK (1 << RATE_24M_IDX)
2639#define RATE_36M_MASK (1 << RATE_36M_IDX)
2640#define RATE_48M_MASK (1 << RATE_48M_IDX)
2641#define RATE_54M_MASK (1 << RATE_54M_IDX)
2642#define RATE_60M_MASK (1 << RATE_60M_IDX)
2643#define RATE_1M_MASK (1 << RATE_1M_IDX)
2644#define RATE_2M_MASK (1 << RATE_2M_IDX)
2645#define RATE_5M_MASK (1 << RATE_5M_IDX)
2646#define RATE_11M_MASK (1 << RATE_11M_IDX)
2647
2648/* uCode API values for legacy bit rates, both OFDM and CCK */
2649enum {
2650 RATE_6M_PLCP = 13,
2651 RATE_9M_PLCP = 15,
2652 RATE_12M_PLCP = 5,
2653 RATE_18M_PLCP = 7,
2654 RATE_24M_PLCP = 9,
2655 RATE_36M_PLCP = 11,
2656 RATE_48M_PLCP = 1,
2657 RATE_54M_PLCP = 3,
2658 RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/
2659 RATE_1M_PLCP = 10,
2660 RATE_2M_PLCP = 20,
2661 RATE_5M_PLCP = 55,
2662 RATE_11M_PLCP = 110,
2663 /*FIXME:RS:add RATE_LEGACY_INVM_PLCP = 0,*/
2664};
2665
2666/* uCode API values for OFDM high-throughput (HT) bit rates */
2667enum {
2668 RATE_SISO_6M_PLCP = 0,
2669 RATE_SISO_12M_PLCP = 1,
2670 RATE_SISO_18M_PLCP = 2,
2671 RATE_SISO_24M_PLCP = 3,
2672 RATE_SISO_36M_PLCP = 4,
2673 RATE_SISO_48M_PLCP = 5,
2674 RATE_SISO_54M_PLCP = 6,
2675 RATE_SISO_60M_PLCP = 7,
2676 RATE_MIMO2_6M_PLCP = 0x8,
2677 RATE_MIMO2_12M_PLCP = 0x9,
2678 RATE_MIMO2_18M_PLCP = 0xa,
2679 RATE_MIMO2_24M_PLCP = 0xb,
2680 RATE_MIMO2_36M_PLCP = 0xc,
2681 RATE_MIMO2_48M_PLCP = 0xd,
2682 RATE_MIMO2_54M_PLCP = 0xe,
2683 RATE_MIMO2_60M_PLCP = 0xf,
2684 RATE_SISO_INVM_PLCP,
2685 RATE_MIMO2_INVM_PLCP = RATE_SISO_INVM_PLCP,
2686};
2687
2688/* MAC header values for bit rates */
2689enum {
2690 RATE_6M_IEEE = 12,
2691 RATE_9M_IEEE = 18,
2692 RATE_12M_IEEE = 24,
2693 RATE_18M_IEEE = 36,
2694 RATE_24M_IEEE = 48,
2695 RATE_36M_IEEE = 72,
2696 RATE_48M_IEEE = 96,
2697 RATE_54M_IEEE = 108,
2698 RATE_60M_IEEE = 120,
2699 RATE_1M_IEEE = 2,
2700 RATE_2M_IEEE = 4,
2701 RATE_5M_IEEE = 11,
2702 RATE_11M_IEEE = 22,
2703};
2704
2705#define IL_CCK_BASIC_RATES_MASK \
2706 (RATE_1M_MASK | \
2707 RATE_2M_MASK)
2708
2709#define IL_CCK_RATES_MASK \
2710 (IL_CCK_BASIC_RATES_MASK | \
2711 RATE_5M_MASK | \
2712 RATE_11M_MASK)
2713
2714#define IL_OFDM_BASIC_RATES_MASK \
2715 (RATE_6M_MASK | \
2716 RATE_12M_MASK | \
2717 RATE_24M_MASK)
2718
2719#define IL_OFDM_RATES_MASK \
2720 (IL_OFDM_BASIC_RATES_MASK | \
2721 RATE_9M_MASK | \
2722 RATE_18M_MASK | \
2723 RATE_36M_MASK | \
2724 RATE_48M_MASK | \
2725 RATE_54M_MASK)
2726
2727#define IL_BASIC_RATES_MASK \
2728 (IL_OFDM_BASIC_RATES_MASK | \
2729 IL_CCK_BASIC_RATES_MASK)
2730
2731#define RATES_MASK ((1 << RATE_COUNT) - 1)
2732#define RATES_MASK_3945 ((1 << RATE_COUNT_3945) - 1)
2733
2734#define IL_INVALID_VALUE -1
2735
2736#define IL_MIN_RSSI_VAL -100
2737#define IL_MAX_RSSI_VAL 0
2738
2739/* These values specify how many Tx frame attempts before
2740 * searching for a new modulation mode */
2741#define IL_LEGACY_FAILURE_LIMIT 160
2742#define IL_LEGACY_SUCCESS_LIMIT 480
2743#define IL_LEGACY_TBL_COUNT 160
2744
2745#define IL_NONE_LEGACY_FAILURE_LIMIT 400
2746#define IL_NONE_LEGACY_SUCCESS_LIMIT 4500
2747#define IL_NONE_LEGACY_TBL_COUNT 1500
2748
2749/* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
2750#define IL_RS_GOOD_RATIO 12800 /* 100% */
2751#define RATE_SCALE_SWITCH 10880 /* 85% */
2752#define RATE_HIGH_TH 10880 /* 85% */
2753#define RATE_INCREASE_TH 6400 /* 50% */
2754#define RATE_DECREASE_TH 1920 /* 15% */
2755
2756/* possible actions when in legacy mode */
2757#define IL_LEGACY_SWITCH_ANTENNA1 0
2758#define IL_LEGACY_SWITCH_ANTENNA2 1
2759#define IL_LEGACY_SWITCH_SISO 2
2760#define IL_LEGACY_SWITCH_MIMO2_AB 3
2761#define IL_LEGACY_SWITCH_MIMO2_AC 4
2762#define IL_LEGACY_SWITCH_MIMO2_BC 5
2763
2764/* possible actions when in siso mode */
2765#define IL_SISO_SWITCH_ANTENNA1 0
2766#define IL_SISO_SWITCH_ANTENNA2 1
2767#define IL_SISO_SWITCH_MIMO2_AB 2
2768#define IL_SISO_SWITCH_MIMO2_AC 3
2769#define IL_SISO_SWITCH_MIMO2_BC 4
2770#define IL_SISO_SWITCH_GI 5
2771
2772/* possible actions when in mimo mode */
2773#define IL_MIMO2_SWITCH_ANTENNA1 0
2774#define IL_MIMO2_SWITCH_ANTENNA2 1
2775#define IL_MIMO2_SWITCH_SISO_A 2
2776#define IL_MIMO2_SWITCH_SISO_B 3
2777#define IL_MIMO2_SWITCH_SISO_C 4
2778#define IL_MIMO2_SWITCH_GI 5
2779
2780#define IL_MAX_SEARCH IL_MIMO2_SWITCH_GI
2781
2782#define IL_ACTION_LIMIT 3 /* # possible actions */
2783
2784#define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */
2785
2786/* load per tid defines for A-MPDU activation */
2787#define IL_AGG_TPT_THREHOLD 0
2788#define IL_AGG_LOAD_THRESHOLD 10
2789#define IL_AGG_ALL_TID 0xff
2790#define TID_QUEUE_CELL_SPACING 50 /*mS */
2791#define TID_QUEUE_MAX_SIZE 20
2792#define TID_ROUND_VALUE 5 /* mS */
2793#define TID_MAX_LOAD_COUNT 8
2794
2795#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
2796#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
2797
2798extern const struct il_rate_info il_rates[RATE_COUNT];
2799
2800enum il_table_type {
2801 LQ_NONE,
2802 LQ_G, /* legacy types */
2803 LQ_A,
2804 LQ_SISO, /* high-throughput types */
2805 LQ_MIMO2,
2806 LQ_MAX,
2807};
2808
2809#define is_legacy(tbl) ((tbl) == LQ_G || (tbl) == LQ_A)
2810#define is_siso(tbl) ((tbl) == LQ_SISO)
2811#define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
2812#define is_mimo(tbl) (is_mimo2(tbl))
2813#define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
2814#define is_a_band(tbl) ((tbl) == LQ_A)
2815#define is_g_and(tbl) ((tbl) == LQ_G)
2816
2817#define ANT_NONE 0x0
2818#define ANT_A BIT(0)
2819#define ANT_B BIT(1)
2820#define ANT_AB (ANT_A | ANT_B)
2821#define ANT_C BIT(2)
2822#define ANT_AC (ANT_A | ANT_C)
2823#define ANT_BC (ANT_B | ANT_C)
2824#define ANT_ABC (ANT_AB | ANT_C)
2825
2826#define IL_MAX_MCS_DISPLAY_SIZE 12
2827
2828struct il_rate_mcs_info {
2829 char mbps[IL_MAX_MCS_DISPLAY_SIZE];
2830 char mcs[IL_MAX_MCS_DISPLAY_SIZE];
2831};
2832
2833/**
2834 * struct il_rate_scale_data -- tx success history for one rate
2835 */
2836struct il_rate_scale_data {
2837 u64 data; /* bitmap of successful frames */
2838 s32 success_counter; /* number of frames successful */
2839 s32 success_ratio; /* per-cent * 128 */
2840 s32 counter; /* number of frames attempted */
2841 s32 average_tpt; /* success ratio * expected throughput */
2842 unsigned long stamp;
2843};
2844
2845/**
2846 * struct il_scale_tbl_info -- tx params and success history for all rates
2847 *
2848 * There are two of these in struct il_lq_sta,
2849 * one for "active", and one for "search".
2850 */
2851struct il_scale_tbl_info {
2852 enum il_table_type lq_type;
2853 u8 ant_type;
2854 u8 is_SGI; /* 1 = short guard interval */
2855 u8 is_ht40; /* 1 = 40 MHz channel width */
2856 u8 is_dup; /* 1 = duplicated data streams */
2857 u8 action; /* change modulation; IL_[LEGACY/SISO/MIMO]_SWITCH_* */
2858 u8 max_search; /* maximun number of tables we can search */
2859 s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */
2860 u32 current_rate; /* rate_n_flags, uCode API format */
2861 struct il_rate_scale_data win[RATE_COUNT]; /* rate histories */
2862};
2863
2864struct il_traffic_load {
2865 unsigned long time_stamp; /* age of the oldest stats */
2866 u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time
2867 * slice */
2868 u32 total; /* total num of packets during the
2869 * last TID_MAX_TIME_DIFF */
2870 u8 queue_count; /* number of queues that has
2871 * been used since the last cleanup */
2872 u8 head; /* start of the circular buffer */
2873};
2874
2875/**
2876 * struct il_lq_sta -- driver's rate scaling ilate structure
2877 *
2878 * Pointer to this gets passed back and forth between driver and mac80211.
2879 */
2880struct il_lq_sta {
2881 u8 active_tbl; /* idx of active table, range 0-1 */
2882 u8 enable_counter; /* indicates HT mode */
2883 u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */
2884 u8 search_better_tbl; /* 1: currently trying alternate mode */
2885 s32 last_tpt;
2886
2887 /* The following determine when to search for a new mode */
2888 u32 table_count_limit;
2889 u32 max_failure_limit; /* # failed frames before new search */
2890 u32 max_success_limit; /* # successful frames before new search */
2891 u32 table_count;
2892 u32 total_failed; /* total failed frames, any/all rates */
2893 u32 total_success; /* total successful frames, any/all rates */
2894 u64 flush_timer; /* time staying in mode before new search */
2895
2896 u8 action_counter; /* # mode-switch actions tried */
2897 u8 is_green;
2898 u8 is_dup;
2899 enum ieee80211_band band;
2900
2901 /* The following are bitmaps of rates; RATE_6M_MASK, etc. */
2902 u32 supp_rates;
2903 u16 active_legacy_rate;
2904 u16 active_siso_rate;
2905 u16 active_mimo2_rate;
2906 s8 max_rate_idx; /* Max rate set by user */
2907 u8 missed_rate_counter;
2908
2909 struct il_link_quality_cmd lq;
2910 struct il_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */
2911 struct il_traffic_load load[TID_MAX_LOAD_COUNT];
2912 u8 tx_agg_tid_en;
2913#ifdef CONFIG_MAC80211_DEBUGFS
2914 struct dentry *rs_sta_dbgfs_scale_table_file;
2915 struct dentry *rs_sta_dbgfs_stats_table_file;
2916 struct dentry *rs_sta_dbgfs_rate_scale_data_file;
2917 struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
2918 u32 dbg_fixed_rate;
2919#endif
2920 struct il_priv *drv;
2921
2922 /* used to be in sta_info */
2923 int last_txrate_idx;
2924 /* last tx rate_n_flags */
2925 u32 last_rate_n_flags;
2926 /* packets destined for this STA are aggregated */
2927 u8 is_agg;
2928};
2929
2930/*
2931 * il_station_priv: Driver's ilate station information
2932 *
2933 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
2934 * in the structure for use by driver. This structure is places in that
2935 * space.
2936 *
2937 * The common struct MUST be first because it is shared between
2938 * 3945 and 4965!
2939 */
2940struct il_station_priv {
2941 struct il_station_priv_common common;
2942 struct il_lq_sta lq_sta;
2943 atomic_t pending_frames;
2944 bool client;
2945 bool asleep;
2946};
2947
2948static inline u8 il4965_num_of_ant(u8 m)
2949{
2950 return !!(m & ANT_A) + !!(m & ANT_B) + !!(m & ANT_C);
2951}
2952
2953static inline u8 il4965_first_antenna(u8 mask)
2954{
2955 if (mask & ANT_A)
2956 return ANT_A;
2957 if (mask & ANT_B)
2958 return ANT_B;
2959 return ANT_C;
2960}
2961
2962
2963/**
2964 * il3945_rate_scale_init - Initialize the rate scale table based on assoc info
2965 *
2966 * The specific throughput table used is based on the type of network
2967 * the associated with, including A, B, G, and G w/ TGG protection
2968 */
2969extern void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
2970
2971/* Initialize station's rate scaling information after adding station */
2972extern void il4965_rs_rate_init(struct il_priv *il,
2973 struct ieee80211_sta *sta, u8 sta_id);
2974extern void il3945_rs_rate_init(struct il_priv *il,
2975 struct ieee80211_sta *sta, u8 sta_id);
2976
2977/**
2978 * il_rate_control_register - Register the rate control algorithm callbacks
2979 *
2980 * Since the rate control algorithm is hardware specific, there is no need
2981 * or reason to place it as a stand alone module. The driver can call
2982 * il_rate_control_register in order to register the rate control callbacks
2983 * with the mac80211 subsystem. This should be performed prior to calling
2984 * ieee80211_register_hw
2985 *
2986 */
2987extern int il4965_rate_control_register(void);
2988extern int il3945_rate_control_register(void);
2989
2990/**
2991 * il_rate_control_unregister - Unregister the rate control callbacks
2992 *
2993 * This should be called after calling ieee80211_unregister_hw, but before
2994 * the driver is unloaded.
2995 */
2996extern void il4965_rate_control_unregister(void);
2997extern void il3945_rate_control_unregister(void);
2998
2576#endif /* __il_core_h__ */ 2999#endif /* __il_core_h__ */
diff --git a/drivers/net/wireless/iwlegacy/iwl-legacy-rs.h b/drivers/net/wireless/iwlegacy/iwl-legacy-rs.h
deleted file mode 100644
index 58e04cb8b0ed..000000000000
--- a/drivers/net/wireless/iwlegacy/iwl-legacy-rs.h
+++ /dev/null
@@ -1,454 +0,0 @@
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
27#ifndef __il_rs_h__
28#define __il_rs_h__
29
30struct il_rate_info {
31 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
32 u8 plcp_siso; /* uCode API: RATE_SISO_6M_PLCP, etc. */
33 u8 plcp_mimo2; /* uCode API: RATE_MIMO2_6M_PLCP, etc. */
34 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
35 u8 prev_ieee; /* previous rate in IEEE speeds */
36 u8 next_ieee; /* next rate in IEEE speeds */
37 u8 prev_rs; /* previous rate used in rs algo */
38 u8 next_rs; /* next rate used in rs algo */
39 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
40 u8 next_rs_tgg; /* next rate used in TGG rs algo */
41};
42
43struct il3945_rate_info {
44 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
45 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
46 u8 prev_ieee; /* previous rate in IEEE speeds */
47 u8 next_ieee; /* next rate in IEEE speeds */
48 u8 prev_rs; /* previous rate used in rs algo */
49 u8 next_rs; /* next rate used in rs algo */
50 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
51 u8 next_rs_tgg; /* next rate used in TGG rs algo */
52 u8 table_rs_idx; /* idx in rate scale table cmd */
53 u8 prev_table_rs; /* prev in rate table cmd */
54};
55
56
57/*
58 * These serve as idxes into
59 * struct il_rate_info il_rates[RATE_COUNT];
60 */
61enum {
62 RATE_1M_IDX = 0,
63 RATE_2M_IDX,
64 RATE_5M_IDX,
65 RATE_11M_IDX,
66 RATE_6M_IDX,
67 RATE_9M_IDX,
68 RATE_12M_IDX,
69 RATE_18M_IDX,
70 RATE_24M_IDX,
71 RATE_36M_IDX,
72 RATE_48M_IDX,
73 RATE_54M_IDX,
74 RATE_60M_IDX,
75 RATE_COUNT,
76 RATE_COUNT_LEGACY = RATE_COUNT - 1, /* Excluding 60M */
77 RATE_COUNT_3945 = RATE_COUNT - 1,
78 RATE_INVM_IDX = RATE_COUNT,
79 RATE_INVALID = RATE_COUNT,
80};
81
82enum {
83 RATE_6M_IDX_TBL = 0,
84 RATE_9M_IDX_TBL,
85 RATE_12M_IDX_TBL,
86 RATE_18M_IDX_TBL,
87 RATE_24M_IDX_TBL,
88 RATE_36M_IDX_TBL,
89 RATE_48M_IDX_TBL,
90 RATE_54M_IDX_TBL,
91 RATE_1M_IDX_TBL,
92 RATE_2M_IDX_TBL,
93 RATE_5M_IDX_TBL,
94 RATE_11M_IDX_TBL,
95 RATE_INVM_IDX_TBL = RATE_INVM_IDX - 1,
96};
97
98enum {
99 IL_FIRST_OFDM_RATE = RATE_6M_IDX,
100 IL39_LAST_OFDM_RATE = RATE_54M_IDX,
101 IL_LAST_OFDM_RATE = RATE_60M_IDX,
102 IL_FIRST_CCK_RATE = RATE_1M_IDX,
103 IL_LAST_CCK_RATE = RATE_11M_IDX,
104};
105
106/* #define vs. enum to keep from defaulting to 'large integer' */
107#define RATE_6M_MASK (1 << RATE_6M_IDX)
108#define RATE_9M_MASK (1 << RATE_9M_IDX)
109#define RATE_12M_MASK (1 << RATE_12M_IDX)
110#define RATE_18M_MASK (1 << RATE_18M_IDX)
111#define RATE_24M_MASK (1 << RATE_24M_IDX)
112#define RATE_36M_MASK (1 << RATE_36M_IDX)
113#define RATE_48M_MASK (1 << RATE_48M_IDX)
114#define RATE_54M_MASK (1 << RATE_54M_IDX)
115#define RATE_60M_MASK (1 << RATE_60M_IDX)
116#define RATE_1M_MASK (1 << RATE_1M_IDX)
117#define RATE_2M_MASK (1 << RATE_2M_IDX)
118#define RATE_5M_MASK (1 << RATE_5M_IDX)
119#define RATE_11M_MASK (1 << RATE_11M_IDX)
120
121/* uCode API values for legacy bit rates, both OFDM and CCK */
122enum {
123 RATE_6M_PLCP = 13,
124 RATE_9M_PLCP = 15,
125 RATE_12M_PLCP = 5,
126 RATE_18M_PLCP = 7,
127 RATE_24M_PLCP = 9,
128 RATE_36M_PLCP = 11,
129 RATE_48M_PLCP = 1,
130 RATE_54M_PLCP = 3,
131 RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/
132 RATE_1M_PLCP = 10,
133 RATE_2M_PLCP = 20,
134 RATE_5M_PLCP = 55,
135 RATE_11M_PLCP = 110,
136 /*FIXME:RS:add RATE_LEGACY_INVM_PLCP = 0,*/
137};
138
139/* uCode API values for OFDM high-throughput (HT) bit rates */
140enum {
141 RATE_SISO_6M_PLCP = 0,
142 RATE_SISO_12M_PLCP = 1,
143 RATE_SISO_18M_PLCP = 2,
144 RATE_SISO_24M_PLCP = 3,
145 RATE_SISO_36M_PLCP = 4,
146 RATE_SISO_48M_PLCP = 5,
147 RATE_SISO_54M_PLCP = 6,
148 RATE_SISO_60M_PLCP = 7,
149 RATE_MIMO2_6M_PLCP = 0x8,
150 RATE_MIMO2_12M_PLCP = 0x9,
151 RATE_MIMO2_18M_PLCP = 0xa,
152 RATE_MIMO2_24M_PLCP = 0xb,
153 RATE_MIMO2_36M_PLCP = 0xc,
154 RATE_MIMO2_48M_PLCP = 0xd,
155 RATE_MIMO2_54M_PLCP = 0xe,
156 RATE_MIMO2_60M_PLCP = 0xf,
157 RATE_SISO_INVM_PLCP,
158 RATE_MIMO2_INVM_PLCP = RATE_SISO_INVM_PLCP,
159};
160
161/* MAC header values for bit rates */
162enum {
163 RATE_6M_IEEE = 12,
164 RATE_9M_IEEE = 18,
165 RATE_12M_IEEE = 24,
166 RATE_18M_IEEE = 36,
167 RATE_24M_IEEE = 48,
168 RATE_36M_IEEE = 72,
169 RATE_48M_IEEE = 96,
170 RATE_54M_IEEE = 108,
171 RATE_60M_IEEE = 120,
172 RATE_1M_IEEE = 2,
173 RATE_2M_IEEE = 4,
174 RATE_5M_IEEE = 11,
175 RATE_11M_IEEE = 22,
176};
177
178#define IL_CCK_BASIC_RATES_MASK \
179 (RATE_1M_MASK | \
180 RATE_2M_MASK)
181
182#define IL_CCK_RATES_MASK \
183 (IL_CCK_BASIC_RATES_MASK | \
184 RATE_5M_MASK | \
185 RATE_11M_MASK)
186
187#define IL_OFDM_BASIC_RATES_MASK \
188 (RATE_6M_MASK | \
189 RATE_12M_MASK | \
190 RATE_24M_MASK)
191
192#define IL_OFDM_RATES_MASK \
193 (IL_OFDM_BASIC_RATES_MASK | \
194 RATE_9M_MASK | \
195 RATE_18M_MASK | \
196 RATE_36M_MASK | \
197 RATE_48M_MASK | \
198 RATE_54M_MASK)
199
200#define IL_BASIC_RATES_MASK \
201 (IL_OFDM_BASIC_RATES_MASK | \
202 IL_CCK_BASIC_RATES_MASK)
203
204#define RATES_MASK ((1 << RATE_COUNT) - 1)
205#define RATES_MASK_3945 ((1 << RATE_COUNT_3945) - 1)
206
207#define IL_INVALID_VALUE -1
208
209#define IL_MIN_RSSI_VAL -100
210#define IL_MAX_RSSI_VAL 0
211
212/* These values specify how many Tx frame attempts before
213 * searching for a new modulation mode */
214#define IL_LEGACY_FAILURE_LIMIT 160
215#define IL_LEGACY_SUCCESS_LIMIT 480
216#define IL_LEGACY_TBL_COUNT 160
217
218#define IL_NONE_LEGACY_FAILURE_LIMIT 400
219#define IL_NONE_LEGACY_SUCCESS_LIMIT 4500
220#define IL_NONE_LEGACY_TBL_COUNT 1500
221
222/* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
223#define IL_RS_GOOD_RATIO 12800 /* 100% */
224#define RATE_SCALE_SWITCH 10880 /* 85% */
225#define RATE_HIGH_TH 10880 /* 85% */
226#define RATE_INCREASE_TH 6400 /* 50% */
227#define RATE_DECREASE_TH 1920 /* 15% */
228
229/* possible actions when in legacy mode */
230#define IL_LEGACY_SWITCH_ANTENNA1 0
231#define IL_LEGACY_SWITCH_ANTENNA2 1
232#define IL_LEGACY_SWITCH_SISO 2
233#define IL_LEGACY_SWITCH_MIMO2_AB 3
234#define IL_LEGACY_SWITCH_MIMO2_AC 4
235#define IL_LEGACY_SWITCH_MIMO2_BC 5
236
237/* possible actions when in siso mode */
238#define IL_SISO_SWITCH_ANTENNA1 0
239#define IL_SISO_SWITCH_ANTENNA2 1
240#define IL_SISO_SWITCH_MIMO2_AB 2
241#define IL_SISO_SWITCH_MIMO2_AC 3
242#define IL_SISO_SWITCH_MIMO2_BC 4
243#define IL_SISO_SWITCH_GI 5
244
245/* possible actions when in mimo mode */
246#define IL_MIMO2_SWITCH_ANTENNA1 0
247#define IL_MIMO2_SWITCH_ANTENNA2 1
248#define IL_MIMO2_SWITCH_SISO_A 2
249#define IL_MIMO2_SWITCH_SISO_B 3
250#define IL_MIMO2_SWITCH_SISO_C 4
251#define IL_MIMO2_SWITCH_GI 5
252
253#define IL_MAX_SEARCH IL_MIMO2_SWITCH_GI
254
255#define IL_ACTION_LIMIT 3 /* # possible actions */
256
257#define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */
258
259/* load per tid defines for A-MPDU activation */
260#define IL_AGG_TPT_THREHOLD 0
261#define IL_AGG_LOAD_THRESHOLD 10
262#define IL_AGG_ALL_TID 0xff
263#define TID_QUEUE_CELL_SPACING 50 /*mS */
264#define TID_QUEUE_MAX_SIZE 20
265#define TID_ROUND_VALUE 5 /* mS */
266#define TID_MAX_LOAD_COUNT 8
267
268#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
269#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
270
271extern const struct il_rate_info il_rates[RATE_COUNT];
272
273enum il_table_type {
274 LQ_NONE,
275 LQ_G, /* legacy types */
276 LQ_A,
277 LQ_SISO, /* high-throughput types */
278 LQ_MIMO2,
279 LQ_MAX,
280};
281
282#define is_legacy(tbl) ((tbl) == LQ_G || (tbl) == LQ_A)
283#define is_siso(tbl) ((tbl) == LQ_SISO)
284#define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
285#define is_mimo(tbl) (is_mimo2(tbl))
286#define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
287#define is_a_band(tbl) ((tbl) == LQ_A)
288#define is_g_and(tbl) ((tbl) == LQ_G)
289
290#define ANT_NONE 0x0
291#define ANT_A BIT(0)
292#define ANT_B BIT(1)
293#define ANT_AB (ANT_A | ANT_B)
294#define ANT_C BIT(2)
295#define ANT_AC (ANT_A | ANT_C)
296#define ANT_BC (ANT_B | ANT_C)
297#define ANT_ABC (ANT_AB | ANT_C)
298
299#define IL_MAX_MCS_DISPLAY_SIZE 12
300
301struct il_rate_mcs_info {
302 char mbps[IL_MAX_MCS_DISPLAY_SIZE];
303 char mcs[IL_MAX_MCS_DISPLAY_SIZE];
304};
305
306/**
307 * struct il_rate_scale_data -- tx success history for one rate
308 */
309struct il_rate_scale_data {
310 u64 data; /* bitmap of successful frames */
311 s32 success_counter; /* number of frames successful */
312 s32 success_ratio; /* per-cent * 128 */
313 s32 counter; /* number of frames attempted */
314 s32 average_tpt; /* success ratio * expected throughput */
315 unsigned long stamp;
316};
317
318/**
319 * struct il_scale_tbl_info -- tx params and success history for all rates
320 *
321 * There are two of these in struct il_lq_sta,
322 * one for "active", and one for "search".
323 */
324struct il_scale_tbl_info {
325 enum il_table_type lq_type;
326 u8 ant_type;
327 u8 is_SGI; /* 1 = short guard interval */
328 u8 is_ht40; /* 1 = 40 MHz channel width */
329 u8 is_dup; /* 1 = duplicated data streams */
330 u8 action; /* change modulation; IL_[LEGACY/SISO/MIMO]_SWITCH_* */
331 u8 max_search; /* maximun number of tables we can search */
332 s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */
333 u32 current_rate; /* rate_n_flags, uCode API format */
334 struct il_rate_scale_data win[RATE_COUNT]; /* rate histories */
335};
336
337struct il_traffic_load {
338 unsigned long time_stamp; /* age of the oldest stats */
339 u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time
340 * slice */
341 u32 total; /* total num of packets during the
342 * last TID_MAX_TIME_DIFF */
343 u8 queue_count; /* number of queues that has
344 * been used since the last cleanup */
345 u8 head; /* start of the circular buffer */
346};
347
348/**
349 * struct il_lq_sta -- driver's rate scaling ilate structure
350 *
351 * Pointer to this gets passed back and forth between driver and mac80211.
352 */
353struct il_lq_sta {
354 u8 active_tbl; /* idx of active table, range 0-1 */
355 u8 enable_counter; /* indicates HT mode */
356 u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */
357 u8 search_better_tbl; /* 1: currently trying alternate mode */
358 s32 last_tpt;
359
360 /* The following determine when to search for a new mode */
361 u32 table_count_limit;
362 u32 max_failure_limit; /* # failed frames before new search */
363 u32 max_success_limit; /* # successful frames before new search */
364 u32 table_count;
365 u32 total_failed; /* total failed frames, any/all rates */
366 u32 total_success; /* total successful frames, any/all rates */
367 u64 flush_timer; /* time staying in mode before new search */
368
369 u8 action_counter; /* # mode-switch actions tried */
370 u8 is_green;
371 u8 is_dup;
372 enum ieee80211_band band;
373
374 /* The following are bitmaps of rates; RATE_6M_MASK, etc. */
375 u32 supp_rates;
376 u16 active_legacy_rate;
377 u16 active_siso_rate;
378 u16 active_mimo2_rate;
379 s8 max_rate_idx; /* Max rate set by user */
380 u8 missed_rate_counter;
381
382 struct il_link_quality_cmd lq;
383 struct il_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */
384 struct il_traffic_load load[TID_MAX_LOAD_COUNT];
385 u8 tx_agg_tid_en;
386#ifdef CONFIG_MAC80211_DEBUGFS
387 struct dentry *rs_sta_dbgfs_scale_table_file;
388 struct dentry *rs_sta_dbgfs_stats_table_file;
389 struct dentry *rs_sta_dbgfs_rate_scale_data_file;
390 struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
391 u32 dbg_fixed_rate;
392#endif
393 struct il_priv *drv;
394
395 /* used to be in sta_info */
396 int last_txrate_idx;
397 /* last tx rate_n_flags */
398 u32 last_rate_n_flags;
399 /* packets destined for this STA are aggregated */
400 u8 is_agg;
401};
402
403static inline u8 il4965_num_of_ant(u8 m)
404{
405 return !!(m & ANT_A) + !!(m & ANT_B) + !!(m & ANT_C);
406}
407
408static inline u8 il4965_first_antenna(u8 mask)
409{
410 if (mask & ANT_A)
411 return ANT_A;
412 if (mask & ANT_B)
413 return ANT_B;
414 return ANT_C;
415}
416
417
418/**
419 * il3945_rate_scale_init - Initialize the rate scale table based on assoc info
420 *
421 * The specific throughput table used is based on the type of network
422 * the associated with, including A, B, G, and G w/ TGG protection
423 */
424extern void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
425
426/* Initialize station's rate scaling information after adding station */
427extern void il4965_rs_rate_init(struct il_priv *il,
428 struct ieee80211_sta *sta, u8 sta_id);
429extern void il3945_rs_rate_init(struct il_priv *il,
430 struct ieee80211_sta *sta, u8 sta_id);
431
432/**
433 * il_rate_control_register - Register the rate control algorithm callbacks
434 *
435 * Since the rate control algorithm is hardware specific, there is no need
436 * or reason to place it as a stand alone module. The driver can call
437 * il_rate_control_register in order to register the rate control callbacks
438 * with the mac80211 subsystem. This should be performed prior to calling
439 * ieee80211_register_hw
440 *
441 */
442extern int il4965_rate_control_register(void);
443extern int il3945_rate_control_register(void);
444
445/**
446 * il_rate_control_unregister - Unregister the rate control callbacks
447 *
448 * This should be called after calling ieee80211_unregister_hw, but before
449 * the driver is unloaded.
450 */
451extern void il4965_rate_control_unregister(void);
452extern void il3945_rate_control_unregister(void);
453
454#endif /* __il_rs__ */
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