Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright(c) 2005 - 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 | #include <linux/kernel.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/skbuff.h> |
| 29 | #include <linux/slab.h> |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 30 | #include <net/mac80211.h> |
| 31 | |
| 32 | #include <linux/netdevice.h> |
| 33 | #include <linux/etherdevice.h> |
| 34 | #include <linux/delay.h> |
| 35 | |
| 36 | #include <linux/workqueue.h> |
| 37 | |
Stanislaw Gruszka | 98613be | 2011-11-15 14:19:34 +0100 | [diff] [blame] | 38 | #include "common.h" |
Stanislaw Gruszka | af038f4 | 2011-08-30 13:58:27 +0200 | [diff] [blame] | 39 | #include "4965.h" |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 40 | |
Stanislaw Gruszka | d317516 | 2011-11-15 11:25:42 +0100 | [diff] [blame] | 41 | #define IL4965_RS_NAME "iwl-4965-rs" |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 42 | |
| 43 | #define NUM_TRY_BEFORE_ANT_TOGGLE 1 |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 44 | #define IL_NUMBER_TRY 1 |
| 45 | #define IL_HT_NUMBER_TRY 3 |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 46 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 47 | #define RATE_MAX_WINDOW 62 /* # tx in history win */ |
| 48 | #define RATE_MIN_FAILURE_TH 6 /* min failures to calc tpt */ |
| 49 | #define RATE_MIN_SUCCESS_TH 8 /* min successes to calc tpt */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 50 | |
| 51 | /* max allowed rate miss before sync LQ cmd */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 52 | #define IL_MISSED_RATE_MAX 15 |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 53 | /* max time to accum history 2 seconds */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 54 | #define RATE_SCALE_FLUSH_INTVL (3*HZ) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 55 | |
| 56 | static u8 rs_ht_to_legacy[] = { |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 57 | RATE_6M_IDX, RATE_6M_IDX, |
| 58 | RATE_6M_IDX, RATE_6M_IDX, |
| 59 | RATE_6M_IDX, |
| 60 | RATE_6M_IDX, RATE_9M_IDX, |
| 61 | RATE_12M_IDX, RATE_18M_IDX, |
| 62 | RATE_24M_IDX, RATE_36M_IDX, |
| 63 | RATE_48M_IDX, RATE_54M_IDX |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | static const u8 ant_toggle_lookup[] = { |
| 67 | /*ANT_NONE -> */ ANT_NONE, |
| 68 | /*ANT_A -> */ ANT_B, |
| 69 | /*ANT_B -> */ ANT_C, |
| 70 | /*ANT_AB -> */ ANT_BC, |
| 71 | /*ANT_C -> */ ANT_A, |
| 72 | /*ANT_AC -> */ ANT_AB, |
| 73 | /*ANT_BC -> */ ANT_AC, |
| 74 | /*ANT_ABC -> */ ANT_ABC, |
| 75 | }; |
| 76 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 77 | #define IL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 78 | [RATE_##r##M_IDX] = { RATE_##r##M_PLCP, \ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 79 | RATE_SISO_##s##M_PLCP, \ |
| 80 | RATE_MIMO2_##s##M_PLCP,\ |
| 81 | RATE_##r##M_IEEE, \ |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 82 | RATE_##ip##M_IDX, \ |
| 83 | RATE_##in##M_IDX, \ |
| 84 | RATE_##rp##M_IDX, \ |
| 85 | RATE_##rn##M_IDX, \ |
| 86 | RATE_##pp##M_IDX, \ |
| 87 | RATE_##np##M_IDX } |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 88 | |
| 89 | /* |
| 90 | * Parameter order: |
| 91 | * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate |
| 92 | * |
| 93 | * If there isn't a valid next or previous rate then INV is used which |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 94 | * maps to RATE_INVALID |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 95 | * |
| 96 | */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 97 | const struct il_rate_info il_rates[RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 98 | IL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 99 | IL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 100 | IL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ |
| 101 | IL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 102 | IL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 103 | IL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ |
| 104 | IL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ |
| 105 | IL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ |
| 106 | IL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ |
| 107 | IL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ |
| 108 | IL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 109 | IL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ |
| 110 | IL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 111 | }; |
| 112 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 113 | static int |
| 114 | il4965_hwrate_to_plcp_idx(u32 rate_n_flags) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 115 | { |
| 116 | int idx = 0; |
| 117 | |
| 118 | /* HT rate format */ |
| 119 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
| 120 | idx = (rate_n_flags & 0xff); |
| 121 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 122 | if (idx >= RATE_MIMO2_6M_PLCP) |
| 123 | idx = idx - RATE_MIMO2_6M_PLCP; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 124 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 125 | idx += IL_FIRST_OFDM_RATE; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 126 | /* skip 9M not supported in ht */ |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 127 | if (idx >= RATE_9M_IDX) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 128 | idx += 1; |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 129 | if (idx >= IL_FIRST_OFDM_RATE && idx <= IL_LAST_OFDM_RATE) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 130 | return idx; |
| 131 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 132 | /* legacy rate format, search for match in table */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 133 | } else { |
Stanislaw Gruszka | d2ddf62 | 2011-08-16 14:17:04 +0200 | [diff] [blame] | 134 | for (idx = 0; idx < ARRAY_SIZE(il_rates); idx++) |
| 135 | if (il_rates[idx].plcp == (rate_n_flags & 0xFF)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 136 | return idx; |
| 137 | } |
| 138 | |
| 139 | return -1; |
| 140 | } |
| 141 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 142 | static void il4965_rs_rate_scale_perform(struct il_priv *il, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 143 | struct sk_buff *skb, |
| 144 | struct ieee80211_sta *sta, |
| 145 | struct il_lq_sta *lq_sta); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 146 | static void il4965_rs_fill_link_cmd(struct il_priv *il, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 147 | struct il_lq_sta *lq_sta, u32 rate_n_flags); |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 148 | static void il4965_rs_stay_in_table(struct il_lq_sta *lq_sta, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 149 | bool force_search); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 150 | |
| 151 | #ifdef CONFIG_MAC80211_DEBUGFS |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 152 | static void il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 153 | u32 *rate_n_flags, int idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 154 | #else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 155 | static void |
| 156 | il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, u32 * rate_n_flags, int idx) |
| 157 | { |
| 158 | } |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 159 | #endif |
| 160 | |
| 161 | /** |
| 162 | * The following tables contain the expected throughput metrics for all rates |
| 163 | * |
| 164 | * 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54, 60 MBits |
| 165 | * |
| 166 | * where invalid entries are zeros. |
| 167 | * |
| 168 | * CCK rates are only valid in legacy table and will only be used in G |
| 169 | * (2.4 GHz) band. |
| 170 | */ |
| 171 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 172 | static s32 expected_tpt_legacy[RATE_COUNT] = { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 173 | 7, 13, 35, 58, 40, 57, 72, 98, 121, 154, 177, 186, 0 |
| 174 | }; |
| 175 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 176 | static s32 expected_tpt_siso20MHz[4][RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 177 | {0, 0, 0, 0, 42, 0, 76, 102, 124, 158, 183, 193, 202}, /* Norm */ |
| 178 | {0, 0, 0, 0, 46, 0, 82, 110, 132, 167, 192, 202, 210}, /* SGI */ |
| 179 | {0, 0, 0, 0, 48, 0, 93, 135, 176, 251, 319, 351, 381}, /* AGG */ |
| 180 | {0, 0, 0, 0, 53, 0, 102, 149, 193, 275, 348, 381, 413}, /* AGG+SGI */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 181 | }; |
| 182 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 183 | static s32 expected_tpt_siso40MHz[4][RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 184 | {0, 0, 0, 0, 77, 0, 127, 160, 184, 220, 242, 250, 257}, /* Norm */ |
| 185 | {0, 0, 0, 0, 83, 0, 135, 169, 193, 229, 250, 257, 264}, /* SGI */ |
| 186 | {0, 0, 0, 0, 96, 0, 182, 259, 328, 451, 553, 598, 640}, /* AGG */ |
| 187 | {0, 0, 0, 0, 106, 0, 199, 282, 357, 487, 593, 640, 683}, /* AGG+SGI */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 188 | }; |
| 189 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 190 | static s32 expected_tpt_mimo2_20MHz[4][RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 191 | {0, 0, 0, 0, 74, 0, 123, 155, 179, 213, 235, 243, 250}, /* Norm */ |
| 192 | {0, 0, 0, 0, 81, 0, 131, 164, 187, 221, 242, 250, 256}, /* SGI */ |
| 193 | {0, 0, 0, 0, 92, 0, 175, 250, 317, 436, 534, 578, 619}, /* AGG */ |
| 194 | {0, 0, 0, 0, 102, 0, 192, 273, 344, 470, 573, 619, 660}, /* AGG+SGI */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 195 | }; |
| 196 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 197 | static s32 expected_tpt_mimo2_40MHz[4][RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 198 | {0, 0, 0, 0, 123, 0, 182, 214, 235, 264, 279, 285, 289}, /* Norm */ |
| 199 | {0, 0, 0, 0, 131, 0, 191, 222, 242, 270, 284, 289, 293}, /* SGI */ |
| 200 | {0, 0, 0, 0, 180, 0, 327, 446, 545, 708, 828, 878, 922}, /* AGG */ |
| 201 | {0, 0, 0, 0, 197, 0, 355, 481, 584, 752, 872, 922, 966}, /* AGG+SGI */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 202 | }; |
| 203 | |
| 204 | /* mbps, mcs */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 205 | static const struct il_rate_mcs_info il_rate_mcs[RATE_COUNT] = { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 206 | {"1", "BPSK DSSS"}, |
| 207 | {"2", "QPSK DSSS"}, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 208 | {"5.5", "BPSK CCK"}, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 209 | {"11", "QPSK CCK"}, |
| 210 | {"6", "BPSK 1/2"}, |
| 211 | {"9", "BPSK 1/2"}, |
| 212 | {"12", "QPSK 1/2"}, |
| 213 | {"18", "QPSK 3/4"}, |
| 214 | {"24", "16QAM 1/2"}, |
| 215 | {"36", "16QAM 3/4"}, |
| 216 | {"48", "64QAM 2/3"}, |
| 217 | {"54", "64QAM 3/4"}, |
| 218 | {"60", "64QAM 5/6"}, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 219 | }; |
| 220 | |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 221 | #define MCS_IDX_PER_STREAM (8) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 222 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 223 | static inline u8 |
| 224 | il4965_rs_extract_rate(u32 rate_n_flags) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 225 | { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 226 | return (u8) (rate_n_flags & 0xFF); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | static void |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 230 | il4965_rs_rate_scale_clear_win(struct il_rate_scale_data *win) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 231 | { |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 232 | win->data = 0; |
| 233 | win->success_counter = 0; |
| 234 | win->success_ratio = IL_INVALID_VALUE; |
| 235 | win->counter = 0; |
| 236 | win->average_tpt = IL_INVALID_VALUE; |
| 237 | win->stamp = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 238 | } |
| 239 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 240 | static inline u8 |
| 241 | il4965_rs_is_valid_ant(u8 valid_antenna, u8 ant_type) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 242 | { |
| 243 | return (ant_type & valid_antenna) == ant_type; |
| 244 | } |
| 245 | |
| 246 | /* |
Stanislaw Gruszka | ebf0d90 | 2011-08-26 15:43:47 +0200 | [diff] [blame] | 247 | * removes the old data from the stats. All data that is older than |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 248 | * TID_MAX_TIME_DIFF, will be deleted. |
| 249 | */ |
| 250 | static void |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 251 | il4965_rs_tl_rm_old_stats(struct il_traffic_load *tl, u32 curr_time) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 252 | { |
| 253 | /* The oldest age we want to keep */ |
| 254 | u32 oldest_time = curr_time - TID_MAX_TIME_DIFF; |
| 255 | |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 256 | while (tl->queue_count && tl->time_stamp < oldest_time) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 257 | tl->total -= tl->packet_count[tl->head]; |
| 258 | tl->packet_count[tl->head] = 0; |
| 259 | tl->time_stamp += TID_QUEUE_CELL_SPACING; |
| 260 | tl->queue_count--; |
| 261 | tl->head++; |
| 262 | if (tl->head >= TID_QUEUE_MAX_SIZE) |
| 263 | tl->head = 0; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | /* |
| 268 | * increment traffic load value for tid and also remove |
| 269 | * any old values if passed the certain time period |
| 270 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 271 | static u8 |
| 272 | il4965_rs_tl_add_packet(struct il_lq_sta *lq_data, struct ieee80211_hdr *hdr) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 273 | { |
| 274 | u32 curr_time = jiffies_to_msecs(jiffies); |
| 275 | u32 time_diff; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 276 | s32 idx; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 277 | struct il_traffic_load *tl = NULL; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 278 | u8 tid; |
| 279 | |
| 280 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
| 281 | u8 *qc = ieee80211_get_qos_ctl(hdr); |
| 282 | tid = qc[0] & 0xf; |
| 283 | } else |
| 284 | return MAX_TID_COUNT; |
| 285 | |
| 286 | if (unlikely(tid >= TID_MAX_LOAD_COUNT)) |
| 287 | return MAX_TID_COUNT; |
| 288 | |
| 289 | tl = &lq_data->load[tid]; |
| 290 | |
| 291 | curr_time -= curr_time % TID_ROUND_VALUE; |
| 292 | |
| 293 | /* Happens only for the first packet. Initialize the data */ |
| 294 | if (!(tl->queue_count)) { |
| 295 | tl->total = 1; |
| 296 | tl->time_stamp = curr_time; |
| 297 | tl->queue_count = 1; |
| 298 | tl->head = 0; |
| 299 | tl->packet_count[0] = 1; |
| 300 | return MAX_TID_COUNT; |
| 301 | } |
| 302 | |
| 303 | time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 304 | idx = time_diff / TID_QUEUE_CELL_SPACING; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 305 | |
| 306 | /* The history is too long: remove data that is older than */ |
| 307 | /* TID_MAX_TIME_DIFF */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 308 | if (idx >= TID_QUEUE_MAX_SIZE) |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 309 | il4965_rs_tl_rm_old_stats(tl, curr_time); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 310 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 311 | idx = (tl->head + idx) % TID_QUEUE_MAX_SIZE; |
| 312 | tl->packet_count[idx] = tl->packet_count[idx] + 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 313 | tl->total = tl->total + 1; |
| 314 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 315 | if ((idx + 1) > tl->queue_count) |
| 316 | tl->queue_count = idx + 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 317 | |
| 318 | return tid; |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | get the traffic load value for tid |
| 323 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 324 | static u32 |
| 325 | il4965_rs_tl_get_load(struct il_lq_sta *lq_data, u8 tid) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 326 | { |
| 327 | u32 curr_time = jiffies_to_msecs(jiffies); |
| 328 | u32 time_diff; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 329 | s32 idx; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 330 | struct il_traffic_load *tl = NULL; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 331 | |
| 332 | if (tid >= TID_MAX_LOAD_COUNT) |
| 333 | return 0; |
| 334 | |
| 335 | tl = &(lq_data->load[tid]); |
| 336 | |
| 337 | curr_time -= curr_time % TID_ROUND_VALUE; |
| 338 | |
| 339 | if (!(tl->queue_count)) |
| 340 | return 0; |
| 341 | |
| 342 | time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 343 | idx = time_diff / TID_QUEUE_CELL_SPACING; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 344 | |
| 345 | /* The history is too long: remove data that is older than */ |
| 346 | /* TID_MAX_TIME_DIFF */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 347 | if (idx >= TID_QUEUE_MAX_SIZE) |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 348 | il4965_rs_tl_rm_old_stats(tl, curr_time); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 349 | |
| 350 | return tl->total; |
| 351 | } |
| 352 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 353 | static int |
| 354 | il4965_rs_tl_turn_on_agg_for_tid(struct il_priv *il, struct il_lq_sta *lq_data, |
| 355 | u8 tid, struct ieee80211_sta *sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 356 | { |
| 357 | int ret = -EAGAIN; |
| 358 | u32 load; |
| 359 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 360 | load = il4965_rs_tl_get_load(lq_data, tid); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 361 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 362 | if (load > IL_AGG_LOAD_THRESHOLD) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 363 | D_HT("Starting Tx agg: STA: %pM tid: %d\n", sta->addr, tid); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 364 | ret = ieee80211_start_tx_ba_session(sta, tid, 5000); |
| 365 | if (ret == -EAGAIN) { |
| 366 | /* |
| 367 | * driver and mac80211 is out of sync |
| 368 | * this might be cause by reloading firmware |
| 369 | * stop the tx ba session here |
| 370 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 371 | IL_ERR("Fail start Tx agg on tid: %d\n", tid); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 372 | ieee80211_stop_tx_ba_session(sta, tid); |
| 373 | } |
Greg Dietsche | dd44eb9 | 2011-08-28 08:32:10 -0500 | [diff] [blame] | 374 | } else |
| 375 | D_HT("Aggregation not enabled for tid %d because load = %u\n", |
| 376 | tid, load); |
| 377 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 378 | return ret; |
| 379 | } |
| 380 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 381 | static void |
| 382 | il4965_rs_tl_turn_on_agg(struct il_priv *il, u8 tid, struct il_lq_sta *lq_data, |
| 383 | struct ieee80211_sta *sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 384 | { |
| 385 | if (tid < TID_MAX_LOAD_COUNT) |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 386 | il4965_rs_tl_turn_on_agg_for_tid(il, lq_data, tid, sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 387 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 388 | IL_ERR("tid exceeds max load count: %d/%d\n", tid, |
| 389 | TID_MAX_LOAD_COUNT); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 390 | } |
| 391 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 392 | static inline int |
| 393 | il4965_get_il4965_num_of_ant_from_rate(u32 rate_n_flags) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 394 | { |
| 395 | return !!(rate_n_flags & RATE_MCS_ANT_A_MSK) + |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 396 | !!(rate_n_flags & RATE_MCS_ANT_B_MSK) + |
| 397 | !!(rate_n_flags & RATE_MCS_ANT_C_MSK); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | /* |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 401 | * Static function to get the expected throughput from an il_scale_tbl_info |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 402 | * that wraps a NULL pointer check |
| 403 | */ |
| 404 | static s32 |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 405 | il4965_get_expected_tpt(struct il_scale_tbl_info *tbl, int rs_idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 406 | { |
| 407 | if (tbl->expected_tpt) |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 408 | return tbl->expected_tpt[rs_idx]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | /** |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 413 | * il4965_rs_collect_tx_data - Update the success/failure sliding win |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 414 | * |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 415 | * We keep a sliding win of the last 62 packets transmitted |
| 416 | * at this rate. win->data contains the bitmask of successful |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 417 | * packets. |
| 418 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 419 | static int |
| 420 | il4965_rs_collect_tx_data(struct il_scale_tbl_info *tbl, int scale_idx, |
| 421 | int attempts, int successes) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 422 | { |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 423 | struct il_rate_scale_data *win = NULL; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 424 | static const u64 mask = (((u64) 1) << (RATE_MAX_WINDOW - 1)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 425 | s32 fail_count, tpt; |
| 426 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 427 | if (scale_idx < 0 || scale_idx >= RATE_COUNT) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 428 | return -EINVAL; |
| 429 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 430 | /* Select win for current tx bit rate */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 431 | win = &(tbl->win[scale_idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 432 | |
| 433 | /* Get expected throughput */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 434 | tpt = il4965_get_expected_tpt(tbl, scale_idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 435 | |
| 436 | /* |
| 437 | * Keep track of only the latest 62 tx frame attempts in this rate's |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 438 | * history win; anything older isn't really relevant any more. |
| 439 | * If we have filled up the sliding win, drop the oldest attempt; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 440 | * if the oldest attempt (highest bit in bitmap) shows "success", |
| 441 | * subtract "1" from the success counter (this is the main reason |
| 442 | * we keep these bitmaps!). |
| 443 | */ |
| 444 | while (attempts > 0) { |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 445 | if (win->counter >= RATE_MAX_WINDOW) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 446 | |
| 447 | /* remove earliest */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 448 | win->counter = RATE_MAX_WINDOW - 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 449 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 450 | if (win->data & mask) { |
| 451 | win->data &= ~mask; |
| 452 | win->success_counter--; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 453 | } |
| 454 | } |
| 455 | |
| 456 | /* Increment frames-attempted counter */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 457 | win->counter++; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 458 | |
| 459 | /* Shift bitmap by one frame to throw away oldest history */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 460 | win->data <<= 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 461 | |
| 462 | /* Mark the most recent #successes attempts as successful */ |
| 463 | if (successes > 0) { |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 464 | win->success_counter++; |
| 465 | win->data |= 0x1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 466 | successes--; |
| 467 | } |
| 468 | |
| 469 | attempts--; |
| 470 | } |
| 471 | |
| 472 | /* Calculate current success ratio, avoid divide-by-0! */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 473 | if (win->counter > 0) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 474 | win->success_ratio = |
| 475 | 128 * (100 * win->success_counter) / win->counter; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 476 | else |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 477 | win->success_ratio = IL_INVALID_VALUE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 478 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 479 | fail_count = win->counter - win->success_counter; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 480 | |
| 481 | /* Calculate average throughput, if we have enough history. */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 482 | if (fail_count >= RATE_MIN_FAILURE_TH || |
| 483 | win->success_counter >= RATE_MIN_SUCCESS_TH) |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 484 | win->average_tpt = (win->success_ratio * tpt + 64) / 128; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 485 | else |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 486 | win->average_tpt = IL_INVALID_VALUE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 487 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 488 | /* Tag this win as having been updated */ |
| 489 | win->stamp = jiffies; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 490 | |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Fill uCode API rate_n_flags field, based on "search" or "active" table. |
| 496 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 497 | static u32 |
| 498 | il4965_rate_n_flags_from_tbl(struct il_priv *il, struct il_scale_tbl_info *tbl, |
| 499 | int idx, u8 use_green) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 500 | { |
| 501 | u32 rate_n_flags = 0; |
| 502 | |
| 503 | if (is_legacy(tbl->lq_type)) { |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 504 | rate_n_flags = il_rates[idx].plcp; |
| 505 | if (idx >= IL_FIRST_CCK_RATE && idx <= IL_LAST_CCK_RATE) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 506 | rate_n_flags |= RATE_MCS_CCK_MSK; |
| 507 | |
| 508 | } else if (is_Ht(tbl->lq_type)) { |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 509 | if (idx > IL_LAST_OFDM_RATE) { |
| 510 | IL_ERR("Invalid HT rate idx %d\n", idx); |
| 511 | idx = IL_LAST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 512 | } |
| 513 | rate_n_flags = RATE_MCS_HT_MSK; |
| 514 | |
| 515 | if (is_siso(tbl->lq_type)) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 516 | rate_n_flags |= il_rates[idx].plcp_siso; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 517 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 518 | rate_n_flags |= il_rates[idx].plcp_mimo2; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 519 | } else { |
Stanislaw Gruszka | 9406f79 | 2011-08-18 22:07:57 +0200 | [diff] [blame] | 520 | IL_ERR("Invalid tbl->lq_type %d\n", tbl->lq_type); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 521 | } |
| 522 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 523 | rate_n_flags |= |
| 524 | ((tbl->ant_type << RATE_MCS_ANT_POS) & RATE_MCS_ANT_ABC_MSK); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 525 | |
| 526 | if (is_Ht(tbl->lq_type)) { |
| 527 | if (tbl->is_ht40) { |
| 528 | if (tbl->is_dup) |
| 529 | rate_n_flags |= RATE_MCS_DUP_MSK; |
| 530 | else |
| 531 | rate_n_flags |= RATE_MCS_HT40_MSK; |
| 532 | } |
| 533 | if (tbl->is_SGI) |
| 534 | rate_n_flags |= RATE_MCS_SGI_MSK; |
| 535 | |
| 536 | if (use_green) { |
| 537 | rate_n_flags |= RATE_MCS_GF_MSK; |
| 538 | if (is_siso(tbl->lq_type) && tbl->is_SGI) { |
| 539 | rate_n_flags &= ~RATE_MCS_SGI_MSK; |
Stanislaw Gruszka | 9406f79 | 2011-08-18 22:07:57 +0200 | [diff] [blame] | 540 | IL_ERR("GF was set with SGI:SISO\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 541 | } |
| 542 | } |
| 543 | } |
| 544 | return rate_n_flags; |
| 545 | } |
| 546 | |
| 547 | /* |
| 548 | * Interpret uCode API's rate_n_flags format, |
| 549 | * fill "search" or "active" tx mode table. |
| 550 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 551 | static int |
| 552 | il4965_rs_get_tbl_info_from_mcs(const u32 rate_n_flags, |
| 553 | enum ieee80211_band band, |
| 554 | struct il_scale_tbl_info *tbl, int *rate_idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 555 | { |
| 556 | u32 ant_msk = (rate_n_flags & RATE_MCS_ANT_ABC_MSK); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 557 | u8 il4965_num_of_ant = |
| 558 | il4965_get_il4965_num_of_ant_from_rate(rate_n_flags); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 559 | u8 mcs; |
| 560 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 561 | memset(tbl, 0, sizeof(struct il_scale_tbl_info)); |
| 562 | *rate_idx = il4965_hwrate_to_plcp_idx(rate_n_flags); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 563 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 564 | if (*rate_idx == RATE_INVALID) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 565 | *rate_idx = -1; |
| 566 | return -EINVAL; |
| 567 | } |
| 568 | tbl->is_SGI = 0; /* default legacy setup */ |
| 569 | tbl->is_ht40 = 0; |
| 570 | tbl->is_dup = 0; |
| 571 | tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS); |
| 572 | tbl->lq_type = LQ_NONE; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 573 | tbl->max_search = IL_MAX_SEARCH; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 574 | |
| 575 | /* legacy rate format */ |
| 576 | if (!(rate_n_flags & RATE_MCS_HT_MSK)) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 577 | if (il4965_num_of_ant == 1) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 578 | if (band == IEEE80211_BAND_5GHZ) |
| 579 | tbl->lq_type = LQ_A; |
| 580 | else |
| 581 | tbl->lq_type = LQ_G; |
| 582 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 583 | /* HT rate format */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 584 | } else { |
| 585 | if (rate_n_flags & RATE_MCS_SGI_MSK) |
| 586 | tbl->is_SGI = 1; |
| 587 | |
| 588 | if ((rate_n_flags & RATE_MCS_HT40_MSK) || |
| 589 | (rate_n_flags & RATE_MCS_DUP_MSK)) |
| 590 | tbl->is_ht40 = 1; |
| 591 | |
| 592 | if (rate_n_flags & RATE_MCS_DUP_MSK) |
| 593 | tbl->is_dup = 1; |
| 594 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 595 | mcs = il4965_rs_extract_rate(rate_n_flags); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 596 | |
| 597 | /* SISO */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 598 | if (mcs <= RATE_SISO_60M_PLCP) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 599 | if (il4965_num_of_ant == 1) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 600 | tbl->lq_type = LQ_SISO; /*else NONE */ |
| 601 | /* MIMO2 */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 602 | } else { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 603 | if (il4965_num_of_ant == 2) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 604 | tbl->lq_type = LQ_MIMO2; |
| 605 | } |
| 606 | } |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | /* switch to another antenna/antennas and return 1 */ |
| 611 | /* if no other valid antenna found, return 0 */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 612 | static int |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 613 | il4965_rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 614 | struct il_scale_tbl_info *tbl) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 615 | { |
| 616 | u8 new_ant_type; |
| 617 | |
| 618 | if (!tbl->ant_type || tbl->ant_type > ANT_ABC) |
| 619 | return 0; |
| 620 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 621 | if (!il4965_rs_is_valid_ant(valid_ant, tbl->ant_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 622 | return 0; |
| 623 | |
| 624 | new_ant_type = ant_toggle_lookup[tbl->ant_type]; |
| 625 | |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 626 | while (new_ant_type != tbl->ant_type && |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 627 | !il4965_rs_is_valid_ant(valid_ant, new_ant_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 628 | new_ant_type = ant_toggle_lookup[new_ant_type]; |
| 629 | |
| 630 | if (new_ant_type == tbl->ant_type) |
| 631 | return 0; |
| 632 | |
| 633 | tbl->ant_type = new_ant_type; |
| 634 | *rate_n_flags &= ~RATE_MCS_ANT_ABC_MSK; |
| 635 | *rate_n_flags |= new_ant_type << RATE_MCS_ANT_POS; |
| 636 | return 1; |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * Green-field mode is valid if the station supports it and |
| 641 | * there are no non-GF stations present in the BSS. |
| 642 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 643 | static bool |
Stanislaw Gruszka | 1c03c46 | 2012-02-03 17:31:52 +0100 | [diff] [blame] | 644 | il4965_rs_use_green(struct il_priv *il, struct ieee80211_sta *sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 645 | { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 646 | return (sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) && |
Stanislaw Gruszka | 1c03c46 | 2012-02-03 17:31:52 +0100 | [diff] [blame] | 647 | !il->ht.non_gf_sta_present; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | /** |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 651 | * il4965_rs_get_supported_rates - get the available rates |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 652 | * |
| 653 | * if management frame or broadcast frame only return |
| 654 | * basic available rates. |
| 655 | * |
| 656 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 657 | static u16 |
| 658 | il4965_rs_get_supported_rates(struct il_lq_sta *lq_sta, |
| 659 | struct ieee80211_hdr *hdr, |
| 660 | enum il_table_type rate_type) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 661 | { |
| 662 | if (is_legacy(rate_type)) { |
| 663 | return lq_sta->active_legacy_rate; |
| 664 | } else { |
| 665 | if (is_siso(rate_type)) |
| 666 | return lq_sta->active_siso_rate; |
| 667 | else |
| 668 | return lq_sta->active_mimo2_rate; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | static u16 |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 673 | il4965_rs_get_adjacent_rate(struct il_priv *il, u8 idx, u16 rate_mask, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 674 | int rate_type) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 675 | { |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 676 | u8 high = RATE_INVALID; |
| 677 | u8 low = RATE_INVALID; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 678 | |
| 679 | /* 802.11A or ht walks to the next literal adjacent rate in |
| 680 | * the rate table */ |
| 681 | if (is_a_band(rate_type) || !is_legacy(rate_type)) { |
| 682 | int i; |
| 683 | u32 mask; |
| 684 | |
| 685 | /* Find the previous rate that is in the rate mask */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 686 | i = idx - 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 687 | for (mask = (1 << i); i >= 0; i--, mask >>= 1) { |
| 688 | if (rate_mask & mask) { |
| 689 | low = i; |
| 690 | break; |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | /* Find the next rate that is in the rate mask */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 695 | i = idx + 1; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 696 | for (mask = (1 << i); i < RATE_COUNT; i++, mask <<= 1) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 697 | if (rate_mask & mask) { |
| 698 | high = i; |
| 699 | break; |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | return (high << 8) | low; |
| 704 | } |
| 705 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 706 | low = idx; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 707 | while (low != RATE_INVALID) { |
Stanislaw Gruszka | d2ddf62 | 2011-08-16 14:17:04 +0200 | [diff] [blame] | 708 | low = il_rates[low].prev_rs; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 709 | if (low == RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 710 | break; |
| 711 | if (rate_mask & (1 << low)) |
| 712 | break; |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 713 | D_RATE("Skipping masked lower rate: %d\n", low); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 714 | } |
| 715 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 716 | high = idx; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 717 | while (high != RATE_INVALID) { |
Stanislaw Gruszka | d2ddf62 | 2011-08-16 14:17:04 +0200 | [diff] [blame] | 718 | high = il_rates[high].next_rs; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 719 | if (high == RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 720 | break; |
| 721 | if (rate_mask & (1 << high)) |
| 722 | break; |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 723 | D_RATE("Skipping masked higher rate: %d\n", high); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | return (high << 8) | low; |
| 727 | } |
| 728 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 729 | static u32 |
| 730 | il4965_rs_get_lower_rate(struct il_lq_sta *lq_sta, |
| 731 | struct il_scale_tbl_info *tbl, u8 scale_idx, |
| 732 | u8 ht_possible) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 733 | { |
| 734 | s32 low; |
| 735 | u16 rate_mask; |
| 736 | u16 high_low; |
| 737 | u8 switch_to_legacy = 0; |
| 738 | u8 is_green = lq_sta->is_green; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 739 | struct il_priv *il = lq_sta->drv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 740 | |
| 741 | /* check if we need to switch from HT to legacy rates. |
| 742 | * assumption is that mandatory rates (1Mbps or 6Mbps) |
| 743 | * are always supported (spec demand) */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 744 | if (!is_legacy(tbl->lq_type) && (!ht_possible || !scale_idx)) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 745 | switch_to_legacy = 1; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 746 | scale_idx = rs_ht_to_legacy[scale_idx]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 747 | if (lq_sta->band == IEEE80211_BAND_5GHZ) |
| 748 | tbl->lq_type = LQ_A; |
| 749 | else |
| 750 | tbl->lq_type = LQ_G; |
| 751 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 752 | if (il4965_num_of_ant(tbl->ant_type) > 1) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 753 | tbl->ant_type = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 754 | il4965_first_antenna(il->hw_params.valid_tx_ant); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 755 | |
| 756 | tbl->is_ht40 = 0; |
| 757 | tbl->is_SGI = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 758 | tbl->max_search = IL_MAX_SEARCH; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 759 | } |
| 760 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 761 | rate_mask = il4965_rs_get_supported_rates(lq_sta, NULL, tbl->lq_type); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 762 | |
| 763 | /* Mask with station rate restriction */ |
| 764 | if (is_legacy(tbl->lq_type)) { |
| 765 | /* supp_rates has no CCK bits in A mode */ |
| 766 | if (lq_sta->band == IEEE80211_BAND_5GHZ) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 767 | rate_mask = |
| 768 | (u16) (rate_mask & |
| 769 | (lq_sta->supp_rates << IL_FIRST_OFDM_RATE)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 770 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 771 | rate_mask = (u16) (rate_mask & lq_sta->supp_rates); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | /* If we switched from HT to legacy, check current rate */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 775 | if (switch_to_legacy && (rate_mask & (1 << scale_idx))) { |
| 776 | low = scale_idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 777 | goto out; |
| 778 | } |
| 779 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 780 | high_low = |
| 781 | il4965_rs_get_adjacent_rate(lq_sta->drv, scale_idx, rate_mask, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 782 | tbl->lq_type); |
| 783 | low = high_low & 0xff; |
| 784 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 785 | if (low == RATE_INVALID) |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 786 | low = scale_idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 787 | |
| 788 | out: |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 789 | return il4965_rate_n_flags_from_tbl(lq_sta->drv, tbl, low, is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | /* |
| 793 | * Simple function to compare two rate scale table types |
| 794 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 795 | static bool |
| 796 | il4965_table_type_matches(struct il_scale_tbl_info *a, |
| 797 | struct il_scale_tbl_info *b) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 798 | { |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 799 | return (a->lq_type == b->lq_type && a->ant_type == b->ant_type && |
| 800 | a->is_SGI == b->is_SGI); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 801 | } |
| 802 | |
| 803 | /* |
| 804 | * mac80211 sends us Tx status |
| 805 | */ |
| 806 | static void |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 807 | il4965_rs_tx_status(void *il_r, struct ieee80211_supported_band *sband, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 808 | struct ieee80211_sta *sta, void *il_sta, |
| 809 | struct sk_buff *skb) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 810 | { |
| 811 | int legacy_success; |
| 812 | int retries; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 813 | int rs_idx, mac_idx, i; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 814 | struct il_lq_sta *lq_sta = il_sta; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 815 | struct il_link_quality_cmd *table; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 816 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 817 | struct il_priv *il = (struct il_priv *)il_r; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 818 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 819 | enum mac80211_rate_control_flags mac_flags; |
| 820 | u32 tx_rate; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 821 | struct il_scale_tbl_info tbl_type; |
| 822 | struct il_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 823 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 824 | D_RATE("get frame ack response, update rate scale win\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 825 | |
| 826 | /* Treat uninitialized rate scaling data same as non-existing. */ |
| 827 | if (!lq_sta) { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 828 | D_RATE("Station rate scaling not created yet.\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 829 | return; |
| 830 | } else if (!lq_sta->drv) { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 831 | D_RATE("Rate scaling not initialized yet.\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 832 | return; |
| 833 | } |
| 834 | |
| 835 | if (!ieee80211_is_data(hdr->frame_control) || |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 836 | (info->flags & IEEE80211_TX_CTL_NO_ACK)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 837 | return; |
| 838 | |
| 839 | /* This packet was aggregated but doesn't carry status info */ |
| 840 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
| 841 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) |
| 842 | return; |
| 843 | |
| 844 | /* |
| 845 | * Ignore this Tx frame response if its initial rate doesn't match |
| 846 | * that of latest Link Quality command. There may be stragglers |
| 847 | * from a previous Link Quality command, but we're no longer interested |
| 848 | * in those; they're either from the "active" mode while we're trying |
| 849 | * to check "search" mode, or a prior "search" mode after we've moved |
| 850 | * to a new "search" mode (which might become the new "active" mode). |
| 851 | */ |
| 852 | table = &lq_sta->lq; |
| 853 | tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 854 | il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, &tbl_type, &rs_idx); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 855 | if (il->band == IEEE80211_BAND_5GHZ) |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 856 | rs_idx -= IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 857 | mac_flags = info->status.rates[0].flags; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 858 | mac_idx = info->status.rates[0].idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 859 | /* For HT packets, map MCS to PLCP */ |
| 860 | if (mac_flags & IEEE80211_TX_RC_MCS) { |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 861 | mac_idx &= RATE_MCS_CODE_MSK; /* Remove # of streams */ |
| 862 | if (mac_idx >= (RATE_9M_IDX - IL_FIRST_OFDM_RATE)) |
| 863 | mac_idx++; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 864 | /* |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 865 | * mac80211 HT idx is always zero-idxed; we need to move |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 866 | * HT OFDM rates after CCK rates in 2.4 GHz band |
| 867 | */ |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 868 | if (il->band == IEEE80211_BAND_2GHZ) |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 869 | mac_idx += IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 870 | } |
| 871 | /* Here we actually compare this rate to the latest LQ command */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 872 | if (mac_idx < 0 || |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 873 | tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI) || |
| 874 | tbl_type.is_ht40 != !!(mac_flags & IEEE80211_TX_RC_40_MHZ_WIDTH) || |
| 875 | tbl_type.is_dup != !!(mac_flags & IEEE80211_TX_RC_DUP_DATA) || |
Johannes Berg | d748b46 | 2012-03-28 11:04:23 +0200 | [diff] [blame] | 876 | tbl_type.ant_type != info->status.antenna || |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 877 | !!(tx_rate & RATE_MCS_HT_MSK) != !!(mac_flags & IEEE80211_TX_RC_MCS) |
| 878 | || !!(tx_rate & RATE_MCS_GF_MSK) != |
| 879 | !!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD) || rs_idx != mac_idx) { |
| 880 | D_RATE("initial rate %d does not match %d (0x%x)\n", mac_idx, |
| 881 | rs_idx, tx_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 882 | /* |
| 883 | * Since rates mis-match, the last LQ command may have failed. |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 884 | * After IL_MISSED_RATE_MAX mis-matches, resync the uCode with |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 885 | * ... driver. |
| 886 | */ |
| 887 | lq_sta->missed_rate_counter++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 888 | if (lq_sta->missed_rate_counter > IL_MISSED_RATE_MAX) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 889 | lq_sta->missed_rate_counter = 0; |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 890 | il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 891 | } |
| 892 | /* Regardless, ignore this status info for outdated rate */ |
| 893 | return; |
| 894 | } else |
| 895 | /* Rate did match, so reset the missed_rate_counter */ |
| 896 | lq_sta->missed_rate_counter = 0; |
| 897 | |
| 898 | /* Figure out if rate scale algorithm is in active or search table */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 899 | if (il4965_table_type_matches |
| 900 | (&tbl_type, &(lq_sta->lq_info[lq_sta->active_tbl]))) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 901 | curr_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 902 | other_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 903 | } else |
| 904 | if (il4965_table_type_matches |
| 905 | (&tbl_type, &lq_sta->lq_info[1 - lq_sta->active_tbl])) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 906 | curr_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); |
| 907 | other_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 908 | } else { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 909 | D_RATE("Neither active nor search matches tx rate\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 910 | tmp_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 911 | D_RATE("active- lq:%x, ant:%x, SGI:%d\n", tmp_tbl->lq_type, |
| 912 | tmp_tbl->ant_type, tmp_tbl->is_SGI); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 913 | tmp_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 914 | D_RATE("search- lq:%x, ant:%x, SGI:%d\n", tmp_tbl->lq_type, |
| 915 | tmp_tbl->ant_type, tmp_tbl->is_SGI); |
| 916 | D_RATE("actual- lq:%x, ant:%x, SGI:%d\n", tbl_type.lq_type, |
| 917 | tbl_type.ant_type, tbl_type.is_SGI); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 918 | /* |
| 919 | * no matching table found, let's by-pass the data collection |
| 920 | * and continue to perform rate scale to find the rate table |
| 921 | */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 922 | il4965_rs_stay_in_table(lq_sta, true); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 923 | goto done; |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * Updating the frame history depends on whether packets were |
| 928 | * aggregated. |
| 929 | * |
| 930 | * For aggregation, all packets were transmitted at the same rate, the |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 931 | * first idx into rate scale table. |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 932 | */ |
| 933 | if (info->flags & IEEE80211_TX_STAT_AMPDU) { |
| 934 | tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 935 | il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, &tbl_type, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 936 | &rs_idx); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 937 | il4965_rs_collect_tx_data(curr_tbl, rs_idx, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 938 | info->status.ampdu_len, |
| 939 | info->status.ampdu_ack_len); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 940 | |
| 941 | /* Update success/fail counts if not searching for new mode */ |
| 942 | if (lq_sta->stay_in_tbl) { |
| 943 | lq_sta->total_success += info->status.ampdu_ack_len; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 944 | lq_sta->total_failed += |
| 945 | (info->status.ampdu_len - |
| 946 | info->status.ampdu_ack_len); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 947 | } |
| 948 | } else { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 949 | /* |
| 950 | * For legacy, update frame history with for each Tx retry. |
| 951 | */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 952 | retries = info->status.rates[0].count - 1; |
| 953 | /* HW doesn't send more than 15 retries */ |
| 954 | retries = min(retries, 15); |
| 955 | |
| 956 | /* The last transmission may have been successful */ |
| 957 | legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK); |
| 958 | /* Collect data for each rate used during failed TX attempts */ |
| 959 | for (i = 0; i <= retries; ++i) { |
| 960 | tx_rate = le32_to_cpu(table->rs_table[i].rate_n_flags); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 961 | il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 962 | &tbl_type, &rs_idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 963 | /* |
| 964 | * Only collect stats if retried rate is in the same RS |
| 965 | * table as active/search. |
| 966 | */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 967 | if (il4965_table_type_matches(&tbl_type, curr_tbl)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 968 | tmp_tbl = curr_tbl; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 969 | else if (il4965_table_type_matches |
| 970 | (&tbl_type, other_tbl)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 971 | tmp_tbl = other_tbl; |
| 972 | else |
| 973 | continue; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 974 | il4965_rs_collect_tx_data(tmp_tbl, rs_idx, 1, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 975 | i < |
| 976 | retries ? 0 : legacy_success); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | /* Update success/fail counts if not searching for new mode */ |
| 980 | if (lq_sta->stay_in_tbl) { |
| 981 | lq_sta->total_success += legacy_success; |
| 982 | lq_sta->total_failed += retries + (1 - legacy_success); |
| 983 | } |
| 984 | } |
| 985 | /* The last TX rate is cached in lq_sta; it's set in if/else above */ |
| 986 | lq_sta->last_rate_n_flags = tx_rate; |
| 987 | done: |
| 988 | /* See if there's a better rate or modulation mode to try. */ |
Greg Dietsche | da6134d | 2011-09-06 17:38:34 -0500 | [diff] [blame] | 989 | if (sta->supp_rates[sband->band]) |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 990 | il4965_rs_rate_scale_perform(il, skb, sta, lq_sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | /* |
| 994 | * Begin a period of staying with a selected modulation mode. |
| 995 | * Set "stay_in_tbl" flag to prevent any mode switches. |
| 996 | * Set frame tx success limits according to legacy vs. high-throughput, |
Stanislaw Gruszka | ebf0d90 | 2011-08-26 15:43:47 +0200 | [diff] [blame] | 997 | * and reset overall (spanning all rates) tx success history stats. |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 998 | * These control how long we stay using same modulation mode before |
| 999 | * searching for a new mode. |
| 1000 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1001 | static void |
| 1002 | il4965_rs_set_stay_in_table(struct il_priv *il, u8 is_legacy, |
| 1003 | struct il_lq_sta *lq_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1004 | { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1005 | D_RATE("we are staying in the same table\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1006 | lq_sta->stay_in_tbl = 1; /* only place this gets set */ |
| 1007 | if (is_legacy) { |
Stanislaw Gruszka | 3b98c7f | 2011-08-26 16:29:35 +0200 | [diff] [blame] | 1008 | lq_sta->table_count_limit = IL_LEGACY_TBL_COUNT; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1009 | lq_sta->max_failure_limit = IL_LEGACY_FAILURE_LIMIT; |
| 1010 | lq_sta->max_success_limit = IL_LEGACY_SUCCESS_LIMIT; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1011 | } else { |
Stanislaw Gruszka | 3b98c7f | 2011-08-26 16:29:35 +0200 | [diff] [blame] | 1012 | lq_sta->table_count_limit = IL_NONE_LEGACY_TBL_COUNT; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1013 | lq_sta->max_failure_limit = IL_NONE_LEGACY_FAILURE_LIMIT; |
| 1014 | lq_sta->max_success_limit = IL_NONE_LEGACY_SUCCESS_LIMIT; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1015 | } |
| 1016 | lq_sta->table_count = 0; |
| 1017 | lq_sta->total_failed = 0; |
| 1018 | lq_sta->total_success = 0; |
| 1019 | lq_sta->flush_timer = jiffies; |
| 1020 | lq_sta->action_counter = 0; |
| 1021 | } |
| 1022 | |
| 1023 | /* |
| 1024 | * Find correct throughput table for given mode of modulation |
| 1025 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1026 | static void |
| 1027 | il4965_rs_set_expected_tpt_table(struct il_lq_sta *lq_sta, |
| 1028 | struct il_scale_tbl_info *tbl) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1029 | { |
| 1030 | /* Used to choose among HT tables */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1031 | s32(*ht_tbl_pointer)[RATE_COUNT]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1032 | |
| 1033 | /* Check for invalid LQ type */ |
| 1034 | if (WARN_ON_ONCE(!is_legacy(tbl->lq_type) && !is_Ht(tbl->lq_type))) { |
| 1035 | tbl->expected_tpt = expected_tpt_legacy; |
| 1036 | return; |
| 1037 | } |
| 1038 | |
| 1039 | /* Legacy rates have only one table */ |
| 1040 | if (is_legacy(tbl->lq_type)) { |
| 1041 | tbl->expected_tpt = expected_tpt_legacy; |
| 1042 | return; |
| 1043 | } |
| 1044 | |
| 1045 | /* Choose among many HT tables depending on number of streams |
| 1046 | * (SISO/MIMO2), channel width (20/40), SGI, and aggregation |
| 1047 | * status */ |
| 1048 | if (is_siso(tbl->lq_type) && (!tbl->is_ht40 || lq_sta->is_dup)) |
| 1049 | ht_tbl_pointer = expected_tpt_siso20MHz; |
| 1050 | else if (is_siso(tbl->lq_type)) |
| 1051 | ht_tbl_pointer = expected_tpt_siso40MHz; |
| 1052 | else if (is_mimo2(tbl->lq_type) && (!tbl->is_ht40 || lq_sta->is_dup)) |
| 1053 | ht_tbl_pointer = expected_tpt_mimo2_20MHz; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1054 | else /* if (is_mimo2(tbl->lq_type)) <-- must be true */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1055 | ht_tbl_pointer = expected_tpt_mimo2_40MHz; |
| 1056 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1057 | if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1058 | tbl->expected_tpt = ht_tbl_pointer[0]; |
| 1059 | else if (tbl->is_SGI && !lq_sta->is_agg) /* SGI */ |
| 1060 | tbl->expected_tpt = ht_tbl_pointer[1]; |
| 1061 | else if (!tbl->is_SGI && lq_sta->is_agg) /* AGG */ |
| 1062 | tbl->expected_tpt = ht_tbl_pointer[2]; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1063 | else /* AGG+SGI */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1064 | tbl->expected_tpt = ht_tbl_pointer[3]; |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * Find starting rate for new "search" high-throughput mode of modulation. |
| 1069 | * Goal is to find lowest expected rate (under perfect conditions) that is |
| 1070 | * above the current measured throughput of "active" mode, to give new mode |
| 1071 | * a fair chance to prove itself without too many challenges. |
| 1072 | * |
| 1073 | * This gets called when transitioning to more aggressive modulation |
| 1074 | * (i.e. legacy to SISO or MIMO, or SISO to MIMO), as well as less aggressive |
| 1075 | * (i.e. MIMO to SISO). When moving to MIMO, bit rate will typically need |
| 1076 | * to decrease to match "active" throughput. When moving from MIMO to SISO, |
| 1077 | * bit rate will typically need to increase, but not if performance was bad. |
| 1078 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1079 | static s32 |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 1080 | il4965_rs_get_best_rate(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1081 | struct il_scale_tbl_info *tbl, /* "search" */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1082 | u16 rate_mask, s8 idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1083 | { |
| 1084 | /* "active" values */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1085 | struct il_scale_tbl_info *active_tbl = |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1086 | &(lq_sta->lq_info[lq_sta->active_tbl]); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1087 | s32 active_sr = active_tbl->win[idx].success_ratio; |
| 1088 | s32 active_tpt = active_tbl->expected_tpt[idx]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1089 | |
| 1090 | /* expected "search" throughput */ |
| 1091 | s32 *tpt_tbl = tbl->expected_tpt; |
| 1092 | |
| 1093 | s32 new_rate, high, low, start_hi; |
| 1094 | u16 high_low; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1095 | s8 rate = idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1096 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1097 | new_rate = high = low = start_hi = RATE_INVALID; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1098 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1099 | for (;;) { |
| 1100 | high_low = |
| 1101 | il4965_rs_get_adjacent_rate(il, rate, rate_mask, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1102 | tbl->lq_type); |
| 1103 | |
| 1104 | low = high_low & 0xff; |
| 1105 | high = (high_low >> 8) & 0xff; |
| 1106 | |
| 1107 | /* |
| 1108 | * Lower the "search" bit rate, to give new "search" mode |
| 1109 | * approximately the same throughput as "active" if: |
| 1110 | * |
| 1111 | * 1) "Active" mode has been working modestly well (but not |
| 1112 | * great), and expected "search" throughput (under perfect |
| 1113 | * conditions) at candidate rate is above the actual |
| 1114 | * measured "active" throughput (but less than expected |
| 1115 | * "active" throughput under perfect conditions). |
| 1116 | * OR |
| 1117 | * 2) "Active" mode has been working perfectly or very well |
| 1118 | * and expected "search" throughput (under perfect |
| 1119 | * conditions) at candidate rate is above expected |
| 1120 | * "active" throughput (under perfect conditions). |
| 1121 | */ |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1122 | if ((100 * tpt_tbl[rate] > lq_sta->last_tpt && |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1123 | (active_sr > RATE_DECREASE_TH && active_sr <= RATE_HIGH_TH |
| 1124 | && tpt_tbl[rate] <= active_tpt)) || |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1125 | (active_sr >= RATE_SCALE_SWITCH && |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1126 | tpt_tbl[rate] > active_tpt)) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1127 | |
| 1128 | /* (2nd or later pass) |
| 1129 | * If we've already tried to raise the rate, and are |
| 1130 | * now trying to lower it, use the higher rate. */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1131 | if (start_hi != RATE_INVALID) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1132 | new_rate = start_hi; |
| 1133 | break; |
| 1134 | } |
| 1135 | |
| 1136 | new_rate = rate; |
| 1137 | |
| 1138 | /* Loop again with lower rate */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1139 | if (low != RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1140 | rate = low; |
| 1141 | |
| 1142 | /* Lower rate not available, use the original */ |
| 1143 | else |
| 1144 | break; |
| 1145 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1146 | /* Else try to raise the "search" rate to match "active" */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1147 | } else { |
| 1148 | /* (2nd or later pass) |
| 1149 | * If we've already tried to lower the rate, and are |
| 1150 | * now trying to raise it, use the lower rate. */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1151 | if (new_rate != RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1152 | break; |
| 1153 | |
| 1154 | /* Loop again with higher rate */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1155 | else if (high != RATE_INVALID) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1156 | start_hi = high; |
| 1157 | rate = high; |
| 1158 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1159 | /* Higher rate not available, use the original */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1160 | } else { |
| 1161 | new_rate = rate; |
| 1162 | break; |
| 1163 | } |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | return new_rate; |
| 1168 | } |
| 1169 | |
| 1170 | /* |
| 1171 | * Set up search table for MIMO2 |
| 1172 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1173 | static int |
| 1174 | il4965_rs_switch_to_mimo2(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1175 | struct ieee80211_conf *conf, |
| 1176 | struct ieee80211_sta *sta, |
| 1177 | struct il_scale_tbl_info *tbl, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1178 | { |
| 1179 | u16 rate_mask; |
| 1180 | s32 rate; |
| 1181 | s8 is_green = lq_sta->is_green; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1182 | |
| 1183 | if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) |
| 1184 | return -1; |
| 1185 | |
Johannes Berg | af0ed69 | 2013-02-12 14:21:00 +0100 | [diff] [blame] | 1186 | if (sta->smps_mode == IEEE80211_SMPS_STATIC) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1187 | return -1; |
| 1188 | |
| 1189 | /* Need both Tx chains/antennas to support MIMO */ |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1190 | if (il->hw_params.tx_chains_num < 2) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1191 | return -1; |
| 1192 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1193 | D_RATE("LQ: try to switch to MIMO2\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1194 | |
| 1195 | tbl->lq_type = LQ_MIMO2; |
| 1196 | tbl->is_dup = lq_sta->is_dup; |
| 1197 | tbl->action = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1198 | tbl->max_search = IL_MAX_SEARCH; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1199 | rate_mask = lq_sta->active_mimo2_rate; |
| 1200 | |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 1201 | if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1202 | tbl->is_ht40 = 1; |
| 1203 | else |
| 1204 | tbl->is_ht40 = 0; |
| 1205 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1206 | il4965_rs_set_expected_tpt_table(lq_sta, tbl); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1207 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1208 | rate = il4965_rs_get_best_rate(il, lq_sta, tbl, rate_mask, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1209 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1210 | D_RATE("LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask); |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1211 | if (rate == RATE_INVALID || !((1 << rate) & rate_mask)) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1212 | D_RATE("Can't switch with idx %d rate mask %x\n", rate, |
| 1213 | rate_mask); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1214 | return -1; |
| 1215 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1216 | tbl->current_rate = |
| 1217 | il4965_rate_n_flags_from_tbl(il, tbl, rate, is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1218 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1219 | D_RATE("LQ: Switch to new mcs %X idx is green %X\n", tbl->current_rate, |
| 1220 | is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1221 | return 0; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * Set up search table for SISO |
| 1226 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1227 | static int |
| 1228 | il4965_rs_switch_to_siso(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1229 | struct ieee80211_conf *conf, struct ieee80211_sta *sta, |
| 1230 | struct il_scale_tbl_info *tbl, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1231 | { |
| 1232 | u16 rate_mask; |
| 1233 | u8 is_green = lq_sta->is_green; |
| 1234 | s32 rate; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1235 | |
| 1236 | if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) |
| 1237 | return -1; |
| 1238 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1239 | D_RATE("LQ: try to switch to SISO\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1240 | |
| 1241 | tbl->is_dup = lq_sta->is_dup; |
| 1242 | tbl->lq_type = LQ_SISO; |
| 1243 | tbl->action = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1244 | tbl->max_search = IL_MAX_SEARCH; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1245 | rate_mask = lq_sta->active_siso_rate; |
| 1246 | |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 1247 | if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1248 | tbl->is_ht40 = 1; |
| 1249 | else |
| 1250 | tbl->is_ht40 = 0; |
| 1251 | |
| 1252 | if (is_green) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1253 | tbl->is_SGI = 0; /*11n spec: no SGI in SISO+Greenfield */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1254 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1255 | il4965_rs_set_expected_tpt_table(lq_sta, tbl); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1256 | rate = il4965_rs_get_best_rate(il, lq_sta, tbl, rate_mask, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1257 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1258 | D_RATE("LQ: get best rate %d mask %X\n", rate, rate_mask); |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1259 | if (rate == RATE_INVALID || !((1 << rate) & rate_mask)) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1260 | D_RATE("can not switch with idx %d rate mask %x\n", rate, |
| 1261 | rate_mask); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1262 | return -1; |
| 1263 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1264 | tbl->current_rate = |
| 1265 | il4965_rate_n_flags_from_tbl(il, tbl, rate, is_green); |
| 1266 | D_RATE("LQ: Switch to new mcs %X idx is green %X\n", tbl->current_rate, |
| 1267 | is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1268 | return 0; |
| 1269 | } |
| 1270 | |
| 1271 | /* |
| 1272 | * Try to switch to new modulation mode from legacy |
| 1273 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1274 | static int |
| 1275 | il4965_rs_move_legacy_other(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1276 | struct ieee80211_conf *conf, |
| 1277 | struct ieee80211_sta *sta, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1278 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1279 | struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 1280 | struct il_scale_tbl_info *search_tbl = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1281 | &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1282 | struct il_rate_scale_data *win = &(tbl->win[idx]); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1283 | u32 sz = |
| 1284 | (sizeof(struct il_scale_tbl_info) - |
| 1285 | (sizeof(struct il_rate_scale_data) * RATE_COUNT)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1286 | u8 start_action; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1287 | u8 valid_tx_ant = il->hw_params.valid_tx_ant; |
| 1288 | u8 tx_chains_num = il->hw_params.tx_chains_num; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1289 | int ret = 0; |
| 1290 | u8 update_search_tbl_counter = 0; |
| 1291 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1292 | tbl->action = IL_LEGACY_SWITCH_SISO; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1293 | |
| 1294 | start_action = tbl->action; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1295 | for (;;) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1296 | lq_sta->action_counter++; |
| 1297 | switch (tbl->action) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1298 | case IL_LEGACY_SWITCH_ANTENNA1: |
| 1299 | case IL_LEGACY_SWITCH_ANTENNA2: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1300 | D_RATE("LQ: Legacy toggle Antenna\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1301 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1302 | if ((tbl->action == IL_LEGACY_SWITCH_ANTENNA1 && |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1303 | tx_chains_num <= 1) || |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1304 | (tbl->action == IL_LEGACY_SWITCH_ANTENNA2 && |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1305 | tx_chains_num <= 2)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1306 | break; |
| 1307 | |
| 1308 | /* Don't change antenna if success has been great */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1309 | if (win->success_ratio >= IL_RS_GOOD_RATIO) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1310 | break; |
| 1311 | |
| 1312 | /* Set up search table to try other antenna */ |
| 1313 | memcpy(search_tbl, tbl, sz); |
| 1314 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1315 | if (il4965_rs_toggle_antenna |
| 1316 | (valid_tx_ant, &search_tbl->current_rate, |
| 1317 | search_tbl)) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1318 | update_search_tbl_counter = 1; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1319 | il4965_rs_set_expected_tpt_table(lq_sta, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1320 | search_tbl); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1321 | goto out; |
| 1322 | } |
| 1323 | break; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1324 | case IL_LEGACY_SWITCH_SISO: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1325 | D_RATE("LQ: Legacy switch to SISO\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1326 | |
| 1327 | /* Set up search table to try SISO */ |
| 1328 | memcpy(search_tbl, tbl, sz); |
| 1329 | search_tbl->is_SGI = 0; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1330 | ret = |
| 1331 | il4965_rs_switch_to_siso(il, lq_sta, conf, sta, |
| 1332 | search_tbl, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1333 | if (!ret) { |
| 1334 | lq_sta->action_counter = 0; |
| 1335 | goto out; |
| 1336 | } |
| 1337 | |
| 1338 | break; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1339 | case IL_LEGACY_SWITCH_MIMO2_AB: |
| 1340 | case IL_LEGACY_SWITCH_MIMO2_AC: |
| 1341 | case IL_LEGACY_SWITCH_MIMO2_BC: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1342 | D_RATE("LQ: Legacy switch to MIMO2\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1343 | |
| 1344 | /* Set up search table to try MIMO */ |
| 1345 | memcpy(search_tbl, tbl, sz); |
| 1346 | search_tbl->is_SGI = 0; |
| 1347 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1348 | if (tbl->action == IL_LEGACY_SWITCH_MIMO2_AB) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1349 | search_tbl->ant_type = ANT_AB; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1350 | else if (tbl->action == IL_LEGACY_SWITCH_MIMO2_AC) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1351 | search_tbl->ant_type = ANT_AC; |
| 1352 | else |
| 1353 | search_tbl->ant_type = ANT_BC; |
| 1354 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1355 | if (!il4965_rs_is_valid_ant |
| 1356 | (valid_tx_ant, search_tbl->ant_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1357 | break; |
| 1358 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1359 | ret = |
| 1360 | il4965_rs_switch_to_mimo2(il, lq_sta, conf, sta, |
| 1361 | search_tbl, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1362 | if (!ret) { |
| 1363 | lq_sta->action_counter = 0; |
| 1364 | goto out; |
| 1365 | } |
| 1366 | break; |
| 1367 | } |
| 1368 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1369 | if (tbl->action > IL_LEGACY_SWITCH_MIMO2_BC) |
| 1370 | tbl->action = IL_LEGACY_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1371 | |
| 1372 | if (tbl->action == start_action) |
| 1373 | break; |
| 1374 | |
| 1375 | } |
| 1376 | search_tbl->lq_type = LQ_NONE; |
| 1377 | return 0; |
| 1378 | |
| 1379 | out: |
| 1380 | lq_sta->search_better_tbl = 1; |
| 1381 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1382 | if (tbl->action > IL_LEGACY_SWITCH_MIMO2_BC) |
| 1383 | tbl->action = IL_LEGACY_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1384 | if (update_search_tbl_counter) |
| 1385 | search_tbl->action = tbl->action; |
| 1386 | return 0; |
| 1387 | |
| 1388 | } |
| 1389 | |
| 1390 | /* |
| 1391 | * Try to switch to new modulation mode from SISO |
| 1392 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1393 | static int |
| 1394 | il4965_rs_move_siso_to_other(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1395 | struct ieee80211_conf *conf, |
| 1396 | struct ieee80211_sta *sta, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1397 | { |
| 1398 | u8 is_green = lq_sta->is_green; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1399 | struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 1400 | struct il_scale_tbl_info *search_tbl = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1401 | &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1402 | struct il_rate_scale_data *win = &(tbl->win[idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1403 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1404 | u32 sz = |
| 1405 | (sizeof(struct il_scale_tbl_info) - |
| 1406 | (sizeof(struct il_rate_scale_data) * RATE_COUNT)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1407 | u8 start_action; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1408 | u8 valid_tx_ant = il->hw_params.valid_tx_ant; |
| 1409 | u8 tx_chains_num = il->hw_params.tx_chains_num; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1410 | u8 update_search_tbl_counter = 0; |
| 1411 | int ret; |
| 1412 | |
| 1413 | start_action = tbl->action; |
| 1414 | |
| 1415 | for (;;) { |
| 1416 | lq_sta->action_counter++; |
| 1417 | switch (tbl->action) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1418 | case IL_SISO_SWITCH_ANTENNA1: |
| 1419 | case IL_SISO_SWITCH_ANTENNA2: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1420 | D_RATE("LQ: SISO toggle Antenna\n"); |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1421 | if ((tbl->action == IL_SISO_SWITCH_ANTENNA1 && |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1422 | tx_chains_num <= 1) || |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1423 | (tbl->action == IL_SISO_SWITCH_ANTENNA2 && |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1424 | tx_chains_num <= 2)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1425 | break; |
| 1426 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1427 | if (win->success_ratio >= IL_RS_GOOD_RATIO) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1428 | break; |
| 1429 | |
| 1430 | memcpy(search_tbl, tbl, sz); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1431 | if (il4965_rs_toggle_antenna |
| 1432 | (valid_tx_ant, &search_tbl->current_rate, |
| 1433 | search_tbl)) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1434 | update_search_tbl_counter = 1; |
| 1435 | goto out; |
| 1436 | } |
| 1437 | break; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1438 | case IL_SISO_SWITCH_MIMO2_AB: |
| 1439 | case IL_SISO_SWITCH_MIMO2_AC: |
| 1440 | case IL_SISO_SWITCH_MIMO2_BC: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1441 | D_RATE("LQ: SISO switch to MIMO2\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1442 | memcpy(search_tbl, tbl, sz); |
| 1443 | search_tbl->is_SGI = 0; |
| 1444 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1445 | if (tbl->action == IL_SISO_SWITCH_MIMO2_AB) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1446 | search_tbl->ant_type = ANT_AB; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1447 | else if (tbl->action == IL_SISO_SWITCH_MIMO2_AC) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1448 | search_tbl->ant_type = ANT_AC; |
| 1449 | else |
| 1450 | search_tbl->ant_type = ANT_BC; |
| 1451 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1452 | if (!il4965_rs_is_valid_ant |
| 1453 | (valid_tx_ant, search_tbl->ant_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1454 | break; |
| 1455 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1456 | ret = |
| 1457 | il4965_rs_switch_to_mimo2(il, lq_sta, conf, sta, |
| 1458 | search_tbl, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1459 | if (!ret) |
| 1460 | goto out; |
| 1461 | break; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1462 | case IL_SISO_SWITCH_GI: |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1463 | if (!tbl->is_ht40 && |
| 1464 | !(ht_cap->cap & IEEE80211_HT_CAP_SGI_20)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1465 | break; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1466 | if (tbl->is_ht40 && |
| 1467 | !(ht_cap->cap & IEEE80211_HT_CAP_SGI_40)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1468 | break; |
| 1469 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1470 | D_RATE("LQ: SISO toggle SGI/NGI\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1471 | |
| 1472 | memcpy(search_tbl, tbl, sz); |
| 1473 | if (is_green) { |
| 1474 | if (!tbl->is_SGI) |
| 1475 | break; |
| 1476 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1477 | IL_ERR("SGI was set in GF+SISO\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1478 | } |
| 1479 | search_tbl->is_SGI = !tbl->is_SGI; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1480 | il4965_rs_set_expected_tpt_table(lq_sta, search_tbl); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1481 | if (tbl->is_SGI) { |
| 1482 | s32 tpt = lq_sta->last_tpt / 100; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1483 | if (tpt >= search_tbl->expected_tpt[idx]) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1484 | break; |
| 1485 | } |
| 1486 | search_tbl->current_rate = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1487 | il4965_rate_n_flags_from_tbl(il, search_tbl, idx, |
| 1488 | is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1489 | update_search_tbl_counter = 1; |
| 1490 | goto out; |
| 1491 | } |
| 1492 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1493 | if (tbl->action > IL_SISO_SWITCH_GI) |
| 1494 | tbl->action = IL_SISO_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1495 | |
| 1496 | if (tbl->action == start_action) |
| 1497 | break; |
| 1498 | } |
| 1499 | search_tbl->lq_type = LQ_NONE; |
| 1500 | return 0; |
| 1501 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1502 | out: |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1503 | lq_sta->search_better_tbl = 1; |
| 1504 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1505 | if (tbl->action > IL_SISO_SWITCH_GI) |
| 1506 | tbl->action = IL_SISO_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1507 | if (update_search_tbl_counter) |
| 1508 | search_tbl->action = tbl->action; |
| 1509 | |
| 1510 | return 0; |
| 1511 | } |
| 1512 | |
| 1513 | /* |
| 1514 | * Try to switch to new modulation mode from MIMO2 |
| 1515 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1516 | static int |
| 1517 | il4965_rs_move_mimo2_to_other(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 1518 | struct ieee80211_conf *conf, |
| 1519 | struct ieee80211_sta *sta, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1520 | { |
| 1521 | s8 is_green = lq_sta->is_green; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1522 | struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 1523 | struct il_scale_tbl_info *search_tbl = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1524 | &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1525 | struct il_rate_scale_data *win = &(tbl->win[idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1526 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1527 | u32 sz = |
| 1528 | (sizeof(struct il_scale_tbl_info) - |
| 1529 | (sizeof(struct il_rate_scale_data) * RATE_COUNT)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1530 | u8 start_action; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1531 | u8 valid_tx_ant = il->hw_params.valid_tx_ant; |
| 1532 | u8 tx_chains_num = il->hw_params.tx_chains_num; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1533 | u8 update_search_tbl_counter = 0; |
| 1534 | int ret; |
| 1535 | |
| 1536 | start_action = tbl->action; |
| 1537 | for (;;) { |
| 1538 | lq_sta->action_counter++; |
| 1539 | switch (tbl->action) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1540 | case IL_MIMO2_SWITCH_ANTENNA1: |
| 1541 | case IL_MIMO2_SWITCH_ANTENNA2: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1542 | D_RATE("LQ: MIMO2 toggle Antennas\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1543 | |
| 1544 | if (tx_chains_num <= 2) |
| 1545 | break; |
| 1546 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1547 | if (win->success_ratio >= IL_RS_GOOD_RATIO) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1548 | break; |
| 1549 | |
| 1550 | memcpy(search_tbl, tbl, sz); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1551 | if (il4965_rs_toggle_antenna |
| 1552 | (valid_tx_ant, &search_tbl->current_rate, |
| 1553 | search_tbl)) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1554 | update_search_tbl_counter = 1; |
| 1555 | goto out; |
| 1556 | } |
| 1557 | break; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1558 | case IL_MIMO2_SWITCH_SISO_A: |
| 1559 | case IL_MIMO2_SWITCH_SISO_B: |
| 1560 | case IL_MIMO2_SWITCH_SISO_C: |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1561 | D_RATE("LQ: MIMO2 switch to SISO\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1562 | |
| 1563 | /* Set up new search table for SISO */ |
| 1564 | memcpy(search_tbl, tbl, sz); |
| 1565 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1566 | if (tbl->action == IL_MIMO2_SWITCH_SISO_A) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1567 | search_tbl->ant_type = ANT_A; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1568 | else if (tbl->action == IL_MIMO2_SWITCH_SISO_B) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1569 | search_tbl->ant_type = ANT_B; |
| 1570 | else |
| 1571 | search_tbl->ant_type = ANT_C; |
| 1572 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1573 | if (!il4965_rs_is_valid_ant |
| 1574 | (valid_tx_ant, search_tbl->ant_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1575 | break; |
| 1576 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1577 | ret = |
| 1578 | il4965_rs_switch_to_siso(il, lq_sta, conf, sta, |
| 1579 | search_tbl, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1580 | if (!ret) |
| 1581 | goto out; |
| 1582 | |
| 1583 | break; |
| 1584 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1585 | case IL_MIMO2_SWITCH_GI: |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1586 | if (!tbl->is_ht40 && |
| 1587 | !(ht_cap->cap & IEEE80211_HT_CAP_SGI_20)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1588 | break; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1589 | if (tbl->is_ht40 && |
| 1590 | !(ht_cap->cap & IEEE80211_HT_CAP_SGI_40)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1591 | break; |
| 1592 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1593 | D_RATE("LQ: MIMO2 toggle SGI/NGI\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1594 | |
| 1595 | /* Set up new search table for MIMO2 */ |
| 1596 | memcpy(search_tbl, tbl, sz); |
| 1597 | search_tbl->is_SGI = !tbl->is_SGI; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1598 | il4965_rs_set_expected_tpt_table(lq_sta, search_tbl); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1599 | /* |
| 1600 | * If active table already uses the fastest possible |
| 1601 | * modulation (dual stream with short guard interval), |
| 1602 | * and it's working well, there's no need to look |
| 1603 | * for a better type of modulation! |
| 1604 | */ |
| 1605 | if (tbl->is_SGI) { |
| 1606 | s32 tpt = lq_sta->last_tpt / 100; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1607 | if (tpt >= search_tbl->expected_tpt[idx]) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1608 | break; |
| 1609 | } |
| 1610 | search_tbl->current_rate = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1611 | il4965_rate_n_flags_from_tbl(il, search_tbl, idx, |
| 1612 | is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1613 | update_search_tbl_counter = 1; |
| 1614 | goto out; |
| 1615 | |
| 1616 | } |
| 1617 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1618 | if (tbl->action > IL_MIMO2_SWITCH_GI) |
| 1619 | tbl->action = IL_MIMO2_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1620 | |
| 1621 | if (tbl->action == start_action) |
| 1622 | break; |
| 1623 | } |
| 1624 | search_tbl->lq_type = LQ_NONE; |
| 1625 | return 0; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1626 | out: |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1627 | lq_sta->search_better_tbl = 1; |
| 1628 | tbl->action++; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1629 | if (tbl->action > IL_MIMO2_SWITCH_GI) |
| 1630 | tbl->action = IL_MIMO2_SWITCH_ANTENNA1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1631 | if (update_search_tbl_counter) |
| 1632 | search_tbl->action = tbl->action; |
| 1633 | |
| 1634 | return 0; |
| 1635 | |
| 1636 | } |
| 1637 | |
| 1638 | /* |
| 1639 | * Check whether we should continue using same modulation mode, or |
| 1640 | * begin search for a new mode, based on: |
| 1641 | * 1) # tx successes or failures while using this mode |
| 1642 | * 2) # times calling this function |
| 1643 | * 3) elapsed time in this mode (not used, for now) |
| 1644 | */ |
| 1645 | static void |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1646 | il4965_rs_stay_in_table(struct il_lq_sta *lq_sta, bool force_search) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1647 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1648 | struct il_scale_tbl_info *tbl; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1649 | int i; |
| 1650 | int active_tbl; |
| 1651 | int flush_interval_passed = 0; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1652 | struct il_priv *il; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1653 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1654 | il = lq_sta->drv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1655 | active_tbl = lq_sta->active_tbl; |
| 1656 | |
| 1657 | tbl = &(lq_sta->lq_info[active_tbl]); |
| 1658 | |
| 1659 | /* If we've been disallowing search, see if we should now allow it */ |
| 1660 | if (lq_sta->stay_in_tbl) { |
| 1661 | |
| 1662 | /* Elapsed time using current modulation mode */ |
| 1663 | if (lq_sta->flush_timer) |
| 1664 | flush_interval_passed = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1665 | time_after(jiffies, |
| 1666 | (unsigned long)(lq_sta->flush_timer + |
| 1667 | RATE_SCALE_FLUSH_INTVL)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1668 | |
| 1669 | /* |
| 1670 | * Check if we should allow search for new modulation mode. |
| 1671 | * If many frames have failed or succeeded, or we've used |
| 1672 | * this same modulation for a long time, allow search, and |
| 1673 | * reset history stats that keep track of whether we should |
| 1674 | * allow a new search. Also (below) reset all bitmaps and |
| 1675 | * stats in active history. |
| 1676 | */ |
| 1677 | if (force_search || |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1678 | lq_sta->total_failed > lq_sta->max_failure_limit || |
| 1679 | lq_sta->total_success > lq_sta->max_success_limit || |
| 1680 | (!lq_sta->search_better_tbl && lq_sta->flush_timer && |
| 1681 | flush_interval_passed)) { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1682 | D_RATE("LQ: stay is expired %d %d %d\n:", |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1683 | lq_sta->total_failed, lq_sta->total_success, |
| 1684 | flush_interval_passed); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1685 | |
| 1686 | /* Allow search for new mode */ |
| 1687 | lq_sta->stay_in_tbl = 0; /* only place reset */ |
| 1688 | lq_sta->total_failed = 0; |
| 1689 | lq_sta->total_success = 0; |
| 1690 | lq_sta->flush_timer = 0; |
| 1691 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1692 | /* |
| 1693 | * Else if we've used this modulation mode enough repetitions |
| 1694 | * (regardless of elapsed time or success/failure), reset |
| 1695 | * history bitmaps and rate-specific stats for all rates in |
| 1696 | * active table. |
| 1697 | */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1698 | } else { |
| 1699 | lq_sta->table_count++; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1700 | if (lq_sta->table_count >= lq_sta->table_count_limit) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1701 | lq_sta->table_count = 0; |
| 1702 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1703 | D_RATE("LQ: stay in table clear win\n"); |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1704 | for (i = 0; i < RATE_COUNT; i++) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1705 | il4965_rs_rate_scale_clear_win(& |
| 1706 | (tbl-> |
| 1707 | win |
| 1708 | [i])); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | /* If transitioning to allow "search", reset all history |
| 1713 | * bitmaps and stats in active table (this will become the new |
| 1714 | * "search" table). */ |
| 1715 | if (!lq_sta->stay_in_tbl) { |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1716 | for (i = 0; i < RATE_COUNT; i++) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1717 | il4965_rs_rate_scale_clear_win(&(tbl->win[i])); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | /* |
| 1723 | * setup rate table in uCode |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1724 | */ |
Greg Dietsche | a741b99 | 2011-09-06 17:49:07 -0500 | [diff] [blame] | 1725 | static void |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 1726 | il4965_rs_update_rate_tbl(struct il_priv *il, struct il_lq_sta *lq_sta, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1727 | struct il_scale_tbl_info *tbl, int idx, u8 is_green) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1728 | { |
| 1729 | u32 rate; |
| 1730 | |
| 1731 | /* Update uCode's rate table. */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1732 | rate = il4965_rate_n_flags_from_tbl(il, tbl, idx, is_green); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1733 | il4965_rs_fill_link_cmd(il, lq_sta, rate); |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 1734 | il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1735 | } |
| 1736 | |
| 1737 | /* |
| 1738 | * Do rate scaling and search for new modulation mode. |
| 1739 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1740 | static void |
| 1741 | il4965_rs_rate_scale_perform(struct il_priv *il, struct sk_buff *skb, |
| 1742 | struct ieee80211_sta *sta, |
| 1743 | struct il_lq_sta *lq_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1744 | { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1745 | struct ieee80211_hw *hw = il->hw; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1746 | struct ieee80211_conf *conf = &hw->conf; |
| 1747 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 1748 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1749 | int low = RATE_INVALID; |
| 1750 | int high = RATE_INVALID; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1751 | int idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1752 | int i; |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1753 | struct il_rate_scale_data *win = NULL; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1754 | int current_tpt = IL_INVALID_VALUE; |
| 1755 | int low_tpt = IL_INVALID_VALUE; |
| 1756 | int high_tpt = IL_INVALID_VALUE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1757 | u32 fail_count; |
| 1758 | s8 scale_action = 0; |
| 1759 | u16 rate_mask; |
| 1760 | u8 update_lq = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1761 | struct il_scale_tbl_info *tbl, *tbl1; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1762 | u16 rate_scale_idx_msk = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1763 | u8 is_green = 0; |
| 1764 | u8 active_tbl = 0; |
| 1765 | u8 done_search = 0; |
| 1766 | u16 high_low; |
| 1767 | s32 sr; |
| 1768 | u8 tid = MAX_TID_COUNT; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1769 | struct il_tid_data *tid_data; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1770 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1771 | D_RATE("rate scale calculate new rate for skb\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1772 | |
| 1773 | /* Send management frames and NO_ACK data using lowest rate. */ |
| 1774 | /* TODO: this could probably be improved.. */ |
| 1775 | if (!ieee80211_is_data(hdr->frame_control) || |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1776 | (info->flags & IEEE80211_TX_CTL_NO_ACK)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1777 | return; |
| 1778 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1779 | lq_sta->supp_rates = sta->supp_rates[lq_sta->band]; |
| 1780 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1781 | tid = il4965_rs_tl_add_packet(lq_sta, hdr); |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1782 | if (tid != MAX_TID_COUNT && (lq_sta->tx_agg_tid_en & (1 << tid))) { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 1783 | tid_data = &il->stations[lq_sta->lq.sta_id].tid[tid]; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1784 | if (tid_data->agg.state == IL_AGG_OFF) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1785 | lq_sta->is_agg = 0; |
| 1786 | else |
| 1787 | lq_sta->is_agg = 1; |
| 1788 | } else |
| 1789 | lq_sta->is_agg = 0; |
| 1790 | |
| 1791 | /* |
| 1792 | * Select rate-scale / modulation-mode table to work with in |
| 1793 | * the rest of this function: "search" if searching for better |
| 1794 | * modulation mode, or "active" if doing rate scaling within a mode. |
| 1795 | */ |
| 1796 | if (!lq_sta->search_better_tbl) |
| 1797 | active_tbl = lq_sta->active_tbl; |
| 1798 | else |
| 1799 | active_tbl = 1 - lq_sta->active_tbl; |
| 1800 | |
| 1801 | tbl = &(lq_sta->lq_info[active_tbl]); |
| 1802 | if (is_legacy(tbl->lq_type)) |
| 1803 | lq_sta->is_green = 0; |
| 1804 | else |
Stanislaw Gruszka | 1c03c46 | 2012-02-03 17:31:52 +0100 | [diff] [blame] | 1805 | lq_sta->is_green = il4965_rs_use_green(il, sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1806 | is_green = lq_sta->is_green; |
| 1807 | |
| 1808 | /* current tx rate */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1809 | idx = lq_sta->last_txrate_idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1810 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1811 | D_RATE("Rate scale idx %d for type %d\n", idx, tbl->lq_type); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1812 | |
| 1813 | /* rates available for this association, and for modulation mode */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1814 | rate_mask = il4965_rs_get_supported_rates(lq_sta, hdr, tbl->lq_type); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1815 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 1816 | D_RATE("mask 0x%04X\n", rate_mask); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1817 | |
| 1818 | /* mask with station rate restriction */ |
| 1819 | if (is_legacy(tbl->lq_type)) { |
| 1820 | if (lq_sta->band == IEEE80211_BAND_5GHZ) |
| 1821 | /* supp_rates has no CCK bits in A mode */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1822 | rate_scale_idx_msk = |
| 1823 | (u16) (rate_mask & |
| 1824 | (lq_sta->supp_rates << IL_FIRST_OFDM_RATE)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1825 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1826 | rate_scale_idx_msk = |
| 1827 | (u16) (rate_mask & lq_sta->supp_rates); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1828 | |
| 1829 | } else |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1830 | rate_scale_idx_msk = rate_mask; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1831 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1832 | if (!rate_scale_idx_msk) |
| 1833 | rate_scale_idx_msk = rate_mask; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1834 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1835 | if (!((1 << idx) & rate_scale_idx_msk)) { |
Stanislaw Gruszka | 9406f79 | 2011-08-18 22:07:57 +0200 | [diff] [blame] | 1836 | IL_ERR("Current Rate is not valid\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1837 | if (lq_sta->search_better_tbl) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1838 | /* revert to active table if search table is not valid */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1839 | tbl->lq_type = LQ_NONE; |
| 1840 | lq_sta->search_better_tbl = 0; |
| 1841 | tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 1842 | /* get "active" rate info */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1843 | idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 1844 | il4965_rs_update_rate_tbl(il, lq_sta, tbl, idx, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1845 | is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1846 | } |
| 1847 | return; |
| 1848 | } |
| 1849 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1850 | /* Get expected throughput table and history win for current rate */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1851 | if (!tbl->expected_tpt) { |
Stanislaw Gruszka | 9406f79 | 2011-08-18 22:07:57 +0200 | [diff] [blame] | 1852 | IL_ERR("tbl->expected_tpt is NULL\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1853 | return; |
| 1854 | } |
| 1855 | |
| 1856 | /* force user max rate if set by user */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1857 | if (lq_sta->max_rate_idx != -1 && lq_sta->max_rate_idx < idx) { |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1858 | idx = lq_sta->max_rate_idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1859 | update_lq = 1; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1860 | win = &(tbl->win[idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1861 | goto lq_update; |
| 1862 | } |
| 1863 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1864 | win = &(tbl->win[idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1865 | |
| 1866 | /* |
| 1867 | * If there is not enough history to calculate actual average |
| 1868 | * throughput, keep analyzing results of more tx frames, without |
| 1869 | * changing rate or mode (bypass most of the rest of this function). |
| 1870 | * Set up new rate table in uCode only if old rate is not supported |
| 1871 | * in current association (use new rate found above). |
| 1872 | */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1873 | fail_count = win->counter - win->success_counter; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1874 | if (fail_count < RATE_MIN_FAILURE_TH && |
| 1875 | win->success_counter < RATE_MIN_SUCCESS_TH) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1876 | D_RATE("LQ: still below TH. succ=%d total=%d " "for idx %d\n", |
| 1877 | win->success_counter, win->counter, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1878 | |
| 1879 | /* Can't calculate this yet; not enough history */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1880 | win->average_tpt = IL_INVALID_VALUE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1881 | |
| 1882 | /* Should we stay with this modulation mode, |
| 1883 | * or search for a new one? */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1884 | il4965_rs_stay_in_table(lq_sta, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1885 | |
| 1886 | goto out; |
| 1887 | } |
| 1888 | /* Else we have enough samples; calculate estimate of |
| 1889 | * actual average throughput */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1890 | if (win->average_tpt != |
| 1891 | ((win->success_ratio * tbl->expected_tpt[idx] + 64) / 128)) { |
| 1892 | IL_ERR("expected_tpt should have been calculated by now\n"); |
| 1893 | win->average_tpt = |
| 1894 | ((win->success_ratio * tbl->expected_tpt[idx] + 64) / 128); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1895 | } |
| 1896 | |
| 1897 | /* If we are searching for better modulation mode, check success. */ |
| 1898 | if (lq_sta->search_better_tbl) { |
| 1899 | /* If good success, continue using the "search" mode; |
| 1900 | * no need to send new link quality command, since we're |
| 1901 | * continuing to use the setup that we've been trying. */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1902 | if (win->average_tpt > lq_sta->last_tpt) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1903 | |
Stanislaw Gruszka | 3b98c7f | 2011-08-26 16:29:35 +0200 | [diff] [blame] | 1904 | D_RATE("LQ: SWITCHING TO NEW TBL " |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1905 | "suc=%d cur-tpt=%d old-tpt=%d\n", |
| 1906 | win->success_ratio, win->average_tpt, |
| 1907 | lq_sta->last_tpt); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1908 | |
| 1909 | if (!is_legacy(tbl->lq_type)) |
| 1910 | lq_sta->enable_counter = 1; |
| 1911 | |
| 1912 | /* Swap tables; "search" becomes "active" */ |
| 1913 | lq_sta->active_tbl = active_tbl; |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1914 | current_tpt = win->average_tpt; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1915 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1916 | /* Else poor success; go back to mode in "active" table */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1917 | } else { |
| 1918 | |
Stanislaw Gruszka | 3b98c7f | 2011-08-26 16:29:35 +0200 | [diff] [blame] | 1919 | D_RATE("LQ: GOING BACK TO THE OLD TBL " |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1920 | "suc=%d cur-tpt=%d old-tpt=%d\n", |
| 1921 | win->success_ratio, win->average_tpt, |
| 1922 | lq_sta->last_tpt); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1923 | |
| 1924 | /* Nullify "search" table */ |
| 1925 | tbl->lq_type = LQ_NONE; |
| 1926 | |
| 1927 | /* Revert to "active" table */ |
| 1928 | active_tbl = lq_sta->active_tbl; |
| 1929 | tbl = &(lq_sta->lq_info[active_tbl]); |
| 1930 | |
| 1931 | /* Revert to "active" rate and throughput info */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 1932 | idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1933 | current_tpt = lq_sta->last_tpt; |
| 1934 | |
| 1935 | /* Need to set up a new rate table in uCode */ |
| 1936 | update_lq = 1; |
| 1937 | } |
| 1938 | |
| 1939 | /* Either way, we've made a decision; modulation mode |
| 1940 | * search is done, allow rate adjustment next time. */ |
| 1941 | lq_sta->search_better_tbl = 0; |
| 1942 | done_search = 1; /* Don't switch modes below! */ |
| 1943 | goto lq_update; |
| 1944 | } |
| 1945 | |
| 1946 | /* (Else) not in search of better modulation mode, try for better |
| 1947 | * starting rate, while staying in this mode. */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1948 | high_low = |
| 1949 | il4965_rs_get_adjacent_rate(il, idx, rate_scale_idx_msk, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1950 | tbl->lq_type); |
| 1951 | low = high_low & 0xff; |
| 1952 | high = (high_low >> 8) & 0xff; |
| 1953 | |
| 1954 | /* If user set max rate, dont allow higher than user constrain */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1955 | if (lq_sta->max_rate_idx != -1 && lq_sta->max_rate_idx < high) |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1956 | high = RATE_INVALID; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1957 | |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1958 | sr = win->success_ratio; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1959 | |
| 1960 | /* Collect measured throughputs for current and adjacent rates */ |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 1961 | current_tpt = win->average_tpt; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1962 | if (low != RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1963 | low_tpt = tbl->win[low].average_tpt; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1964 | if (high != RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1965 | high_tpt = tbl->win[high].average_tpt; |
| 1966 | |
| 1967 | scale_action = 0; |
| 1968 | |
| 1969 | /* Too many failures, decrease rate */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1970 | if (sr <= RATE_DECREASE_TH || current_tpt == 0) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1971 | D_RATE("decrease rate because of low success_ratio\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1972 | scale_action = -1; |
| 1973 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 1974 | /* No throughput measured yet for adjacent rates; try increase. */ |
| 1975 | } else if (low_tpt == IL_INVALID_VALUE && high_tpt == IL_INVALID_VALUE) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1976 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1977 | if (high != RATE_INVALID && sr >= RATE_INCREASE_TH) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1978 | scale_action = 1; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 1979 | else if (low != RATE_INVALID) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1980 | scale_action = 0; |
| 1981 | } |
| 1982 | |
| 1983 | /* Both adjacent throughputs are measured, but neither one has better |
| 1984 | * throughput; we're using the best rate, don't change it! */ |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 1985 | else if (low_tpt != IL_INVALID_VALUE && high_tpt != IL_INVALID_VALUE && |
| 1986 | low_tpt < current_tpt && high_tpt < current_tpt) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1987 | scale_action = 0; |
| 1988 | |
| 1989 | /* At least one adjacent rate's throughput is measured, |
| 1990 | * and may have better performance. */ |
| 1991 | else { |
| 1992 | /* Higher adjacent rate's throughput is measured */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 1993 | if (high_tpt != IL_INVALID_VALUE) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1994 | /* Higher rate has better throughput */ |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 1995 | if (high_tpt > current_tpt && sr >= RATE_INCREASE_TH) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1996 | scale_action = 1; |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 1997 | else |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1998 | scale_action = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1999 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2000 | /* Lower adjacent rate's throughput is measured */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2001 | } else if (low_tpt != IL_INVALID_VALUE) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2002 | /* Lower rate has better throughput */ |
| 2003 | if (low_tpt > current_tpt) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2004 | D_RATE("decrease rate because of low tpt\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2005 | scale_action = -1; |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2006 | } else if (sr >= RATE_INCREASE_TH) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2007 | scale_action = 1; |
| 2008 | } |
| 2009 | } |
| 2010 | } |
| 2011 | |
| 2012 | /* Sanity check; asked for decrease, but success rate or throughput |
| 2013 | * has been good at old rate. Don't change it. */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2014 | if (scale_action == -1 && low != RATE_INVALID && |
| 2015 | (sr > RATE_HIGH_TH || current_tpt > 100 * tbl->expected_tpt[low])) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2016 | scale_action = 0; |
| 2017 | |
| 2018 | switch (scale_action) { |
| 2019 | case -1: |
| 2020 | /* Decrease starting rate, update uCode's rate table */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2021 | if (low != RATE_INVALID) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2022 | update_lq = 1; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2023 | idx = low; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2024 | } |
| 2025 | |
| 2026 | break; |
| 2027 | case 1: |
| 2028 | /* Increase starting rate, update uCode's rate table */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2029 | if (high != RATE_INVALID) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2030 | update_lq = 1; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2031 | idx = high; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2032 | } |
| 2033 | |
| 2034 | break; |
| 2035 | case 0: |
| 2036 | /* No change */ |
| 2037 | default: |
| 2038 | break; |
| 2039 | } |
| 2040 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2041 | D_RATE("choose rate scale idx %d action %d low %d " "high %d type %d\n", |
| 2042 | idx, scale_action, low, high, tbl->lq_type); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2043 | |
| 2044 | lq_update: |
| 2045 | /* Replace uCode's rate table for the destination station. */ |
| 2046 | if (update_lq) |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 2047 | il4965_rs_update_rate_tbl(il, lq_sta, tbl, idx, is_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2048 | |
| 2049 | /* Should we stay with this modulation mode, |
| 2050 | * or search for a new one? */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2051 | il4965_rs_stay_in_table(lq_sta, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2052 | |
| 2053 | /* |
| 2054 | * Search for new modulation mode if we're: |
| 2055 | * 1) Not changing rates right now |
| 2056 | * 2) Not just finishing up a search |
| 2057 | * 3) Allowing a new search |
| 2058 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2059 | if (!update_lq && !done_search && !lq_sta->stay_in_tbl && win->counter) { |
| 2060 | /* Save current throughput to compare with "search" throughput */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2061 | lq_sta->last_tpt = current_tpt; |
| 2062 | |
| 2063 | /* Select a new "search" modulation mode to try. |
| 2064 | * If one is found, set up the new "search" table. */ |
| 2065 | if (is_legacy(tbl->lq_type)) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2066 | il4965_rs_move_legacy_other(il, lq_sta, conf, sta, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2067 | else if (is_siso(tbl->lq_type)) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2068 | il4965_rs_move_siso_to_other(il, lq_sta, conf, sta, |
| 2069 | idx); |
| 2070 | else /* (is_mimo2(tbl->lq_type)) */ |
| 2071 | il4965_rs_move_mimo2_to_other(il, lq_sta, conf, sta, |
| 2072 | idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2073 | |
| 2074 | /* If new "search" mode was selected, set up in uCode table */ |
| 2075 | if (lq_sta->search_better_tbl) { |
| 2076 | /* Access the "search" table, clear its history. */ |
| 2077 | tbl = &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2078 | for (i = 0; i < RATE_COUNT; i++) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2079 | il4965_rs_rate_scale_clear_win(&(tbl->win[i])); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2080 | |
| 2081 | /* Use new "search" start rate */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2082 | idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2083 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2084 | D_RATE("Switch current mcs: %X idx: %d\n", |
| 2085 | tbl->current_rate, idx); |
| 2086 | il4965_rs_fill_link_cmd(il, lq_sta, tbl->current_rate); |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 2087 | il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2088 | } else |
| 2089 | done_search = 1; |
| 2090 | } |
| 2091 | |
| 2092 | if (done_search && !lq_sta->stay_in_tbl) { |
| 2093 | /* If the "active" (non-search) mode was legacy, |
| 2094 | * and we've tried switching antennas, |
| 2095 | * but we haven't been able to try HT modes (not available), |
| 2096 | * stay with best antenna legacy modulation for a while |
| 2097 | * before next round of mode comparisons. */ |
| 2098 | tbl1 = &(lq_sta->lq_info[lq_sta->active_tbl]); |
| 2099 | if (is_legacy(tbl1->lq_type) && !conf_is_ht(conf) && |
| 2100 | lq_sta->action_counter > tbl1->max_search) { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2101 | D_RATE("LQ: STAY in legacy table\n"); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2102 | il4965_rs_set_stay_in_table(il, 1, lq_sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | /* If we're in an HT mode, and all 3 mode switch actions |
| 2106 | * have been tried and compared, stay in this best modulation |
| 2107 | * mode for a while before next round of mode comparisons. */ |
| 2108 | if (lq_sta->enable_counter && |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 2109 | lq_sta->action_counter >= tbl1->max_search) { |
| 2110 | if (lq_sta->last_tpt > IL_AGG_TPT_THREHOLD && |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2111 | (lq_sta->tx_agg_tid_en & (1 << tid)) && |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 2112 | tid != MAX_TID_COUNT) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2113 | tid_data = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2114 | &il->stations[lq_sta->lq.sta_id].tid[tid]; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2115 | if (tid_data->agg.state == IL_AGG_OFF) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2116 | D_RATE("try to aggregate tid %d\n", |
| 2117 | tid); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2118 | il4965_rs_tl_turn_on_agg(il, tid, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2119 | lq_sta, sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2120 | } |
| 2121 | } |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2122 | il4965_rs_set_stay_in_table(il, 0, lq_sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2123 | } |
| 2124 | } |
| 2125 | |
| 2126 | out: |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2127 | tbl->current_rate = |
| 2128 | il4965_rate_n_flags_from_tbl(il, tbl, idx, is_green); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2129 | i = idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2130 | lq_sta->last_txrate_idx = i; |
| 2131 | } |
| 2132 | |
| 2133 | /** |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2134 | * il4965_rs_initialize_lq - Initialize a station's hardware rate table |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2135 | * |
| 2136 | * The uCode's station table contains a table of fallback rates |
| 2137 | * for automatic fallback during transmission. |
| 2138 | * |
| 2139 | * NOTE: This sets up a default set of values. These will be replaced later |
| 2140 | * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of |
| 2141 | * rc80211_simple. |
| 2142 | * |
Stanislaw Gruszka | 4d69c75 | 2011-08-30 15:26:35 +0200 | [diff] [blame] | 2143 | * NOTE: Run C_ADD_STA command to set up station table entry, before |
| 2144 | * calling this function (which runs C_TX_LINK_QUALITY_CMD, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2145 | * which requires station table entry to exist). |
| 2146 | */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2147 | static void |
| 2148 | il4965_rs_initialize_lq(struct il_priv *il, struct ieee80211_conf *conf, |
| 2149 | struct ieee80211_sta *sta, struct il_lq_sta *lq_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2150 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2151 | struct il_scale_tbl_info *tbl; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2152 | int rate_idx; |
| 2153 | int i; |
| 2154 | u32 rate; |
Colin Ian King | ace5af3 | 2013-03-26 17:35:23 +0000 | [diff] [blame] | 2155 | u8 use_green; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2156 | u8 active_tbl = 0; |
| 2157 | u8 valid_tx_ant; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2158 | struct il_station_priv *sta_priv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2159 | |
| 2160 | if (!sta || !lq_sta) |
| 2161 | return; |
| 2162 | |
Colin Ian King | ace5af3 | 2013-03-26 17:35:23 +0000 | [diff] [blame] | 2163 | use_green = il4965_rs_use_green(il, sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2164 | sta_priv = (void *)sta->drv_priv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2165 | |
| 2166 | i = lq_sta->last_txrate_idx; |
| 2167 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2168 | valid_tx_ant = il->hw_params.valid_tx_ant; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2169 | |
| 2170 | if (!lq_sta->search_better_tbl) |
| 2171 | active_tbl = lq_sta->active_tbl; |
| 2172 | else |
| 2173 | active_tbl = 1 - lq_sta->active_tbl; |
| 2174 | |
| 2175 | tbl = &(lq_sta->lq_info[active_tbl]); |
| 2176 | |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2177 | if (i < 0 || i >= RATE_COUNT) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2178 | i = 0; |
| 2179 | |
Stanislaw Gruszka | d2ddf62 | 2011-08-16 14:17:04 +0200 | [diff] [blame] | 2180 | rate = il_rates[i].plcp; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2181 | tbl->ant_type = il4965_first_antenna(valid_tx_ant); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2182 | rate |= tbl->ant_type << RATE_MCS_ANT_POS; |
| 2183 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2184 | if (i >= IL_FIRST_CCK_RATE && i <= IL_LAST_CCK_RATE) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2185 | rate |= RATE_MCS_CCK_MSK; |
| 2186 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2187 | il4965_rs_get_tbl_info_from_mcs(rate, il->band, tbl, &rate_idx); |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2188 | if (!il4965_rs_is_valid_ant(valid_tx_ant, tbl->ant_type)) |
| 2189 | il4965_rs_toggle_antenna(valid_tx_ant, &rate, tbl); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2190 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2191 | rate = il4965_rate_n_flags_from_tbl(il, tbl, rate_idx, use_green); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2192 | tbl->current_rate = rate; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2193 | il4965_rs_set_expected_tpt_table(lq_sta, tbl); |
| 2194 | il4965_rs_fill_link_cmd(NULL, lq_sta, rate); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2195 | il->stations[lq_sta->lq.sta_id].lq = &lq_sta->lq; |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 2196 | il_send_lq_cmd(il, &lq_sta->lq, CMD_SYNC, true); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2197 | } |
| 2198 | |
| 2199 | static void |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2200 | il4965_rs_get_rate(void *il_r, struct ieee80211_sta *sta, void *il_sta, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2201 | struct ieee80211_tx_rate_control *txrc) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2202 | { |
| 2203 | |
| 2204 | struct sk_buff *skb = txrc->skb; |
| 2205 | struct ieee80211_supported_band *sband = txrc->sband; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2206 | struct il_priv *il __maybe_unused = (struct il_priv *)il_r; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2207 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2208 | struct il_lq_sta *lq_sta = il_sta; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2209 | int rate_idx; |
| 2210 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2211 | D_RATE("rate scale calculate new rate for skb\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2212 | |
| 2213 | /* Get max rate if user set max rate */ |
| 2214 | if (lq_sta) { |
| 2215 | lq_sta->max_rate_idx = txrc->max_rate_idx; |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 2216 | if (sband->band == IEEE80211_BAND_5GHZ && |
| 2217 | lq_sta->max_rate_idx != -1) |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2218 | lq_sta->max_rate_idx += IL_FIRST_OFDM_RATE; |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 2219 | if (lq_sta->max_rate_idx < 0 || |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2220 | lq_sta->max_rate_idx >= RATE_COUNT) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2221 | lq_sta->max_rate_idx = -1; |
| 2222 | } |
| 2223 | |
| 2224 | /* Treat uninitialized rate scaling data same as non-existing. */ |
| 2225 | if (lq_sta && !lq_sta->drv) { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2226 | D_RATE("Rate scaling not initialized yet.\n"); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2227 | il_sta = NULL; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2228 | } |
| 2229 | |
| 2230 | /* Send management frames and NO_ACK data using lowest rate. */ |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2231 | if (rate_control_send_low(sta, il_sta, txrc)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2232 | return; |
| 2233 | |
Greg Dietsche | 0c34861 | 2011-06-02 22:24:06 -0500 | [diff] [blame] | 2234 | if (!lq_sta) |
| 2235 | return; |
| 2236 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2237 | rate_idx = lq_sta->last_txrate_idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2238 | |
| 2239 | if (lq_sta->last_rate_n_flags & RATE_MCS_HT_MSK) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2240 | rate_idx -= IL_FIRST_OFDM_RATE; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2241 | /* 6M and 9M shared same MCS idx */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2242 | rate_idx = (rate_idx > 0) ? (rate_idx - 1) : 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2243 | if (il4965_rs_extract_rate(lq_sta->last_rate_n_flags) >= |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2244 | RATE_MIMO2_6M_PLCP) |
Stanislaw Gruszka | 2d09b06 | 2011-08-26 16:10:40 +0200 | [diff] [blame] | 2245 | rate_idx = rate_idx + MCS_IDX_PER_STREAM; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2246 | info->control.rates[0].flags = IEEE80211_TX_RC_MCS; |
| 2247 | if (lq_sta->last_rate_n_flags & RATE_MCS_SGI_MSK) |
| 2248 | info->control.rates[0].flags |= |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2249 | IEEE80211_TX_RC_SHORT_GI; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2250 | if (lq_sta->last_rate_n_flags & RATE_MCS_DUP_MSK) |
| 2251 | info->control.rates[0].flags |= |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2252 | IEEE80211_TX_RC_DUP_DATA; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2253 | if (lq_sta->last_rate_n_flags & RATE_MCS_HT40_MSK) |
| 2254 | info->control.rates[0].flags |= |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2255 | IEEE80211_TX_RC_40_MHZ_WIDTH; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2256 | if (lq_sta->last_rate_n_flags & RATE_MCS_GF_MSK) |
| 2257 | info->control.rates[0].flags |= |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2258 | IEEE80211_TX_RC_GREEN_FIELD; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2259 | } else { |
| 2260 | /* Check for invalid rates */ |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2261 | if (rate_idx < 0 || rate_idx >= RATE_COUNT_LEGACY || |
Stanislaw Gruszka | 232913b | 2011-08-26 10:45:16 +0200 | [diff] [blame] | 2262 | (sband->band == IEEE80211_BAND_5GHZ && |
| 2263 | rate_idx < IL_FIRST_OFDM_RATE)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2264 | rate_idx = rate_lowest_index(sband, sta); |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2265 | /* On valid 5 GHz rate, adjust idx */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2266 | else if (sband->band == IEEE80211_BAND_5GHZ) |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2267 | rate_idx -= IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2268 | info->control.rates[0].flags = 0; |
| 2269 | } |
| 2270 | info->control.rates[0].idx = rate_idx; |
Stanislaw Gruszka | a8cf019 | 2013-06-04 14:19:10 +0200 | [diff] [blame^] | 2271 | info->control.rates[0].count = 1; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2272 | } |
| 2273 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2274 | static void * |
| 2275 | il4965_rs_alloc_sta(void *il_rate, struct ieee80211_sta *sta, gfp_t gfp) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2276 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2277 | struct il_station_priv *sta_priv = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2278 | (struct il_station_priv *)sta->drv_priv; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2279 | struct il_priv *il; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2280 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2281 | il = (struct il_priv *)il_rate; |
Stanislaw Gruszka | 6ce1dc4 | 2011-08-26 15:49:28 +0200 | [diff] [blame] | 2282 | D_RATE("create station rate scale win\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2283 | |
Greg Dietsche | 3e4b065 | 2011-09-06 18:12:05 -0500 | [diff] [blame] | 2284 | return &sta_priv->lq_sta; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2285 | } |
| 2286 | |
| 2287 | /* |
| 2288 | * Called after adding a new station to initialize rate scaling |
| 2289 | */ |
| 2290 | void |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2291 | il4965_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2292 | { |
| 2293 | int i, j; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2294 | struct ieee80211_hw *hw = il->hw; |
| 2295 | struct ieee80211_conf *conf = &il->hw->conf; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2296 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2297 | struct il_station_priv *sta_priv; |
| 2298 | struct il_lq_sta *lq_sta; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2299 | struct ieee80211_supported_band *sband; |
| 2300 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2301 | sta_priv = (struct il_station_priv *)sta->drv_priv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2302 | lq_sta = &sta_priv->lq_sta; |
Karl Beldan | 675a0b0 | 2013-03-25 16:26:57 +0100 | [diff] [blame] | 2303 | sband = hw->wiphy->bands[conf->chandef.chan->band]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2304 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2305 | lq_sta->lq.sta_id = sta_id; |
| 2306 | |
| 2307 | for (j = 0; j < LQ_SIZE; j++) |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2308 | for (i = 0; i < RATE_COUNT; i++) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2309 | il4965_rs_rate_scale_clear_win(&lq_sta->lq_info[j]. |
| 2310 | win[i]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2311 | |
| 2312 | lq_sta->flush_timer = 0; |
| 2313 | lq_sta->supp_rates = sta->supp_rates[sband->band]; |
| 2314 | for (j = 0; j < LQ_SIZE; j++) |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2315 | for (i = 0; i < RATE_COUNT; i++) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2316 | il4965_rs_rate_scale_clear_win(&lq_sta->lq_info[j]. |
| 2317 | win[i]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2318 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2319 | D_RATE("LQ:" "*** rate scale station global init for station %d ***\n", |
| 2320 | sta_id); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2321 | /* TODO: what is a good starting rate for STA? About middle? Maybe not |
| 2322 | * the lowest or the highest rate.. Could consider using RSSI from |
| 2323 | * previous packets? Need to have IEEE 802.1X auth succeed immediately |
| 2324 | * after assoc.. */ |
| 2325 | |
| 2326 | lq_sta->is_dup = 0; |
| 2327 | lq_sta->max_rate_idx = -1; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2328 | lq_sta->missed_rate_counter = IL_MISSED_RATE_MAX; |
Stanislaw Gruszka | 1c03c46 | 2012-02-03 17:31:52 +0100 | [diff] [blame] | 2329 | lq_sta->is_green = il4965_rs_use_green(il, sta); |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2330 | lq_sta->active_legacy_rate = il->active_rate & ~(0x1000); |
| 2331 | lq_sta->band = il->band; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2332 | /* |
| 2333 | * active_siso_rate mask includes 9 MBits (bit 5), and CCK (bits 0-3), |
| 2334 | * supp_rates[] does not; shift to convert format, force 9 MBits off. |
| 2335 | */ |
| 2336 | lq_sta->active_siso_rate = ht_cap->mcs.rx_mask[0] << 1; |
| 2337 | lq_sta->active_siso_rate |= ht_cap->mcs.rx_mask[0] & 0x1; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2338 | lq_sta->active_siso_rate &= ~((u16) 0x2); |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2339 | lq_sta->active_siso_rate <<= IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2340 | |
| 2341 | /* Same here */ |
| 2342 | lq_sta->active_mimo2_rate = ht_cap->mcs.rx_mask[1] << 1; |
| 2343 | lq_sta->active_mimo2_rate |= ht_cap->mcs.rx_mask[1] & 0x1; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2344 | lq_sta->active_mimo2_rate &= ~((u16) 0x2); |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2345 | lq_sta->active_mimo2_rate <<= IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2346 | |
| 2347 | /* These values will be overridden later */ |
| 2348 | lq_sta->lq.general_params.single_stream_ant_msk = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2349 | il4965_first_antenna(il->hw_params.valid_tx_ant); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2350 | lq_sta->lq.general_params.dual_stream_ant_msk = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2351 | il->hw_params.valid_tx_ant & ~il4965_first_antenna(il->hw_params. |
| 2352 | valid_tx_ant); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2353 | if (!lq_sta->lq.general_params.dual_stream_ant_msk) { |
| 2354 | lq_sta->lq.general_params.dual_stream_ant_msk = ANT_AB; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2355 | } else if (il4965_num_of_ant(il->hw_params.valid_tx_ant) == 2) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2356 | lq_sta->lq.general_params.dual_stream_ant_msk = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2357 | il->hw_params.valid_tx_ant; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2358 | } |
| 2359 | |
| 2360 | /* as default allow aggregation for all tids */ |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2361 | lq_sta->tx_agg_tid_en = IL_AGG_ALL_TID; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2362 | lq_sta->drv = il; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2363 | |
| 2364 | /* Set last_txrate_idx to lowest rate */ |
| 2365 | lq_sta->last_txrate_idx = rate_lowest_index(sband, sta); |
| 2366 | if (sband->band == IEEE80211_BAND_5GHZ) |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2367 | lq_sta->last_txrate_idx += IL_FIRST_OFDM_RATE; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2368 | lq_sta->is_agg = 0; |
| 2369 | |
| 2370 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 2371 | lq_sta->dbg_fixed_rate = 0; |
| 2372 | #endif |
| 2373 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2374 | il4965_rs_initialize_lq(il, conf, sta, lq_sta); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2375 | } |
| 2376 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2377 | static void |
| 2378 | il4965_rs_fill_link_cmd(struct il_priv *il, struct il_lq_sta *lq_sta, |
| 2379 | u32 new_rate) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2380 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2381 | struct il_scale_tbl_info tbl_type; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2382 | int idx = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2383 | int rate_idx; |
| 2384 | int repeat_rate = 0; |
| 2385 | u8 ant_toggle_cnt = 0; |
| 2386 | u8 use_ht_possible = 1; |
| 2387 | u8 valid_tx_ant = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2388 | struct il_link_quality_cmd *lq_cmd = &lq_sta->lq; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2389 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2390 | /* Override starting rate (idx 0) if needed for debug purposes */ |
| 2391 | il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2392 | |
| 2393 | /* Interpret new_rate (rate_n_flags) */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2394 | il4965_rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type, |
| 2395 | &rate_idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2396 | |
| 2397 | /* How many times should we repeat the initial rate? */ |
| 2398 | if (is_legacy(tbl_type.lq_type)) { |
| 2399 | ant_toggle_cnt = 1; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2400 | repeat_rate = IL_NUMBER_TRY; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2401 | } else { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2402 | repeat_rate = IL_HT_NUMBER_TRY; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2403 | } |
| 2404 | |
| 2405 | lq_cmd->general_params.mimo_delimiter = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2406 | is_mimo(tbl_type.lq_type) ? 1 : 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2407 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2408 | /* Fill 1st table entry (idx 0) */ |
| 2409 | lq_cmd->rs_table[idx].rate_n_flags = cpu_to_le32(new_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2410 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2411 | if (il4965_num_of_ant(tbl_type.ant_type) == 1) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2412 | lq_cmd->general_params.single_stream_ant_msk = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2413 | tbl_type.ant_type; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2414 | } else if (il4965_num_of_ant(tbl_type.ant_type) == 2) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2415 | lq_cmd->general_params.dual_stream_ant_msk = tbl_type.ant_type; |
| 2416 | } |
| 2417 | /* otherwise we don't modify the existing value */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2418 | idx++; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2419 | repeat_rate--; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2420 | if (il) |
| 2421 | valid_tx_ant = il->hw_params.valid_tx_ant; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2422 | |
| 2423 | /* Fill rest of rate table */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2424 | while (idx < LINK_QUAL_MAX_RETRY_NUM) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2425 | /* Repeat initial/next rate. |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2426 | * For legacy IL_NUMBER_TRY == 1, this loop will not execute. |
| 2427 | * For HT IL_HT_NUMBER_TRY == 3, this executes twice. */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2428 | while (repeat_rate > 0 && idx < LINK_QUAL_MAX_RETRY_NUM) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2429 | if (is_legacy(tbl_type.lq_type)) { |
| 2430 | if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) |
| 2431 | ant_toggle_cnt++; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2432 | else if (il && |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2433 | il4965_rs_toggle_antenna(valid_tx_ant, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2434 | &new_rate, |
| 2435 | &tbl_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2436 | ant_toggle_cnt = 1; |
| 2437 | } |
| 2438 | |
| 2439 | /* Override next rate if needed for debug purposes */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2440 | il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2441 | |
| 2442 | /* Fill next table entry */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2443 | lq_cmd->rs_table[idx].rate_n_flags = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2444 | cpu_to_le32(new_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2445 | repeat_rate--; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2446 | idx++; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2447 | } |
| 2448 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2449 | il4965_rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, |
| 2450 | &tbl_type, &rate_idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2451 | |
| 2452 | /* Indicate to uCode which entries might be MIMO. |
| 2453 | * If initial rate was MIMO, this will finally end up |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2454 | * as (IL_HT_NUMBER_TRY * 2), after 2nd pass, otherwise 0. */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2455 | if (is_mimo(tbl_type.lq_type)) |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2456 | lq_cmd->general_params.mimo_delimiter = idx; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2457 | |
| 2458 | /* Get next rate */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2459 | new_rate = |
| 2460 | il4965_rs_get_lower_rate(lq_sta, &tbl_type, rate_idx, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2461 | use_ht_possible); |
| 2462 | |
| 2463 | /* How many times should we repeat the next rate? */ |
| 2464 | if (is_legacy(tbl_type.lq_type)) { |
| 2465 | if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) |
| 2466 | ant_toggle_cnt++; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2467 | else if (il && |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2468 | il4965_rs_toggle_antenna(valid_tx_ant, |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2469 | &new_rate, &tbl_type)) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2470 | ant_toggle_cnt = 1; |
| 2471 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2472 | repeat_rate = IL_NUMBER_TRY; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2473 | } else { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2474 | repeat_rate = IL_HT_NUMBER_TRY; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2475 | } |
| 2476 | |
| 2477 | /* Don't allow HT rates after next pass. |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2478 | * il4965_rs_get_lower_rate() will change type to LQ_A or LQ_G. */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2479 | use_ht_possible = 0; |
| 2480 | |
| 2481 | /* Override next rate if needed for debug purposes */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2482 | il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2483 | |
| 2484 | /* Fill next table entry */ |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2485 | lq_cmd->rs_table[idx].rate_n_flags = cpu_to_le32(new_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2486 | |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2487 | idx++; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2488 | repeat_rate--; |
| 2489 | } |
| 2490 | |
| 2491 | lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_DEF; |
| 2492 | lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; |
| 2493 | |
| 2494 | lq_cmd->agg_params.agg_time_limit = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2495 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2496 | } |
| 2497 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2498 | static void * |
| 2499 | il4965_rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2500 | { |
| 2501 | return hw->priv; |
| 2502 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2503 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2504 | /* rate scale requires free function to be implemented */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2505 | static void |
| 2506 | il4965_rs_free(void *il_rate) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2507 | { |
| 2508 | return; |
| 2509 | } |
| 2510 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2511 | static void |
| 2512 | il4965_rs_free_sta(void *il_r, struct ieee80211_sta *sta, void *il_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2513 | { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2514 | struct il_priv *il __maybe_unused = il_r; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2515 | |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2516 | D_RATE("enter\n"); |
| 2517 | D_RATE("leave\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2518 | } |
| 2519 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2520 | #ifdef CONFIG_MAC80211_DEBUGFS |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2521 | |
| 2522 | static void |
| 2523 | il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, u32 * rate_n_flags, int idx) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2524 | { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2525 | struct il_priv *il; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2526 | u8 valid_tx_ant; |
| 2527 | u8 ant_sel_tx; |
| 2528 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2529 | il = lq_sta->drv; |
| 2530 | valid_tx_ant = il->hw_params.valid_tx_ant; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2531 | if (lq_sta->dbg_fixed_rate) { |
| 2532 | ant_sel_tx = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2533 | ((lq_sta-> |
| 2534 | dbg_fixed_rate & RATE_MCS_ANT_ABC_MSK) >> |
| 2535 | RATE_MCS_ANT_POS); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2536 | if ((valid_tx_ant & ant_sel_tx) == ant_sel_tx) { |
| 2537 | *rate_n_flags = lq_sta->dbg_fixed_rate; |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2538 | D_RATE("Fixed rate ON\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2539 | } else { |
| 2540 | lq_sta->dbg_fixed_rate = 0; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2541 | IL_ERR |
| 2542 | ("Invalid antenna selection 0x%X, Valid is 0x%X\n", |
| 2543 | ant_sel_tx, valid_tx_ant); |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2544 | D_RATE("Fixed rate OFF\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2545 | } |
| 2546 | } else { |
Stanislaw Gruszka | 58de00a | 2011-11-15 11:21:01 +0100 | [diff] [blame] | 2547 | D_RATE("Fixed rate OFF\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2548 | } |
| 2549 | } |
| 2550 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2551 | static ssize_t |
| 2552 | il4965_rs_sta_dbgfs_scale_table_write(struct file *file, |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 2553 | const char __user *user_buf, |
| 2554 | size_t count, loff_t *ppos) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2555 | { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2556 | struct il_lq_sta *lq_sta = file->private_data; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2557 | struct il_priv *il; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2558 | char buf[64]; |
Stephen Boyd | 8220ba3 | 2011-05-12 16:50:04 -0700 | [diff] [blame] | 2559 | size_t buf_size; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2560 | u32 parsed_rate; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2561 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2562 | il = lq_sta->drv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2563 | memset(buf, 0, sizeof(buf)); |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2564 | buf_size = min(count, sizeof(buf) - 1); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2565 | if (copy_from_user(buf, user_buf, buf_size)) |
| 2566 | return -EFAULT; |
| 2567 | |
| 2568 | if (sscanf(buf, "%x", &parsed_rate) == 1) |
| 2569 | lq_sta->dbg_fixed_rate = parsed_rate; |
| 2570 | else |
| 2571 | lq_sta->dbg_fixed_rate = 0; |
| 2572 | |
| 2573 | lq_sta->active_legacy_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */ |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2574 | lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ |
| 2575 | lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2576 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2577 | D_RATE("sta_id %d rate 0x%X\n", lq_sta->lq.sta_id, |
| 2578 | lq_sta->dbg_fixed_rate); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2579 | |
| 2580 | if (lq_sta->dbg_fixed_rate) { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2581 | il4965_rs_fill_link_cmd(NULL, lq_sta, lq_sta->dbg_fixed_rate); |
Stanislaw Gruszka | 8300719 | 2012-02-03 17:31:57 +0100 | [diff] [blame] | 2582 | il_send_lq_cmd(lq_sta->drv, &lq_sta->lq, CMD_ASYNC, false); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2583 | } |
| 2584 | |
| 2585 | return count; |
| 2586 | } |
| 2587 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2588 | static ssize_t |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 2589 | il4965_rs_sta_dbgfs_scale_table_read(struct file *file, char __user *user_buf, |
| 2590 | size_t count, loff_t *ppos) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2591 | { |
| 2592 | char *buff; |
| 2593 | int desc = 0; |
| 2594 | int i = 0; |
Stanislaw Gruszka | 0c2c885 | 2011-11-15 12:30:17 +0100 | [diff] [blame] | 2595 | int idx = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2596 | ssize_t ret; |
| 2597 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2598 | struct il_lq_sta *lq_sta = file->private_data; |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2599 | struct il_priv *il; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2600 | struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2601 | |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2602 | il = lq_sta->drv; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2603 | buff = kmalloc(1024, GFP_KERNEL); |
| 2604 | if (!buff) |
| 2605 | return -ENOMEM; |
| 2606 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2607 | desc += sprintf(buff + desc, "sta_id %d\n", lq_sta->lq.sta_id); |
| 2608 | desc += |
| 2609 | sprintf(buff + desc, "failed=%d success=%d rate=0%X\n", |
| 2610 | lq_sta->total_failed, lq_sta->total_success, |
| 2611 | lq_sta->active_legacy_rate); |
| 2612 | desc += |
| 2613 | sprintf(buff + desc, "fixed rate 0x%X\n", lq_sta->dbg_fixed_rate); |
| 2614 | desc += |
| 2615 | sprintf(buff + desc, "valid_tx_ant %s%s%s\n", |
| 2616 | (il->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "", |
| 2617 | (il->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "", |
| 2618 | (il->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : ""); |
| 2619 | desc += |
| 2620 | sprintf(buff + desc, "lq type %s\n", |
| 2621 | (is_legacy(tbl->lq_type)) ? "legacy" : "HT"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2622 | if (is_Ht(tbl->lq_type)) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2623 | desc += |
| 2624 | sprintf(buff + desc, " %s", |
| 2625 | (is_siso(tbl->lq_type)) ? "SISO" : "MIMO2"); |
| 2626 | desc += |
| 2627 | sprintf(buff + desc, " %s", |
| 2628 | (tbl->is_ht40) ? "40MHz" : "20MHz"); |
| 2629 | desc += |
| 2630 | sprintf(buff + desc, " %s %s %s\n", |
| 2631 | (tbl->is_SGI) ? "SGI" : "", |
| 2632 | (lq_sta->is_green) ? "GF enabled" : "", |
| 2633 | (lq_sta->is_agg) ? "AGG on" : ""); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2634 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2635 | desc += |
| 2636 | sprintf(buff + desc, "last tx rate=0x%X\n", |
| 2637 | lq_sta->last_rate_n_flags); |
| 2638 | desc += |
| 2639 | sprintf(buff + desc, |
| 2640 | "general:" "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n", |
| 2641 | lq_sta->lq.general_params.flags, |
| 2642 | lq_sta->lq.general_params.mimo_delimiter, |
| 2643 | lq_sta->lq.general_params.single_stream_ant_msk, |
| 2644 | lq_sta->lq.general_params.dual_stream_ant_msk); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2645 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2646 | desc += |
| 2647 | sprintf(buff + desc, |
| 2648 | "agg:" |
| 2649 | "time_limit=%d dist_start_th=%d frame_cnt_limit=%d\n", |
| 2650 | le16_to_cpu(lq_sta->lq.agg_params.agg_time_limit), |
| 2651 | lq_sta->lq.agg_params.agg_dis_start_th, |
| 2652 | lq_sta->lq.agg_params.agg_frame_cnt_limit); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2653 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2654 | desc += |
| 2655 | sprintf(buff + desc, |
| 2656 | "Start idx [0]=0x%x [1]=0x%x [2]=0x%x [3]=0x%x\n", |
| 2657 | lq_sta->lq.general_params.start_rate_idx[0], |
| 2658 | lq_sta->lq.general_params.start_rate_idx[1], |
| 2659 | lq_sta->lq.general_params.start_rate_idx[2], |
| 2660 | lq_sta->lq.general_params.start_rate_idx[3]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2661 | |
| 2662 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2663 | idx = |
| 2664 | il4965_hwrate_to_plcp_idx(le32_to_cpu |
| 2665 | (lq_sta->lq.rs_table[i]. |
| 2666 | rate_n_flags)); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2667 | if (is_legacy(tbl->lq_type)) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2668 | desc += |
| 2669 | sprintf(buff + desc, " rate[%d] 0x%X %smbps\n", i, |
| 2670 | le32_to_cpu(lq_sta->lq.rs_table[i]. |
| 2671 | rate_n_flags), |
| 2672 | il_rate_mcs[idx].mbps); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2673 | } else { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2674 | desc += |
| 2675 | sprintf(buff + desc, " rate[%d] 0x%X %smbps (%s)\n", |
| 2676 | i, |
| 2677 | le32_to_cpu(lq_sta->lq.rs_table[i]. |
| 2678 | rate_n_flags), |
| 2679 | il_rate_mcs[idx].mbps, |
| 2680 | il_rate_mcs[idx].mcs); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2681 | } |
| 2682 | } |
| 2683 | |
| 2684 | ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); |
| 2685 | kfree(buff); |
| 2686 | return ret; |
| 2687 | } |
| 2688 | |
| 2689 | static const struct file_operations rs_sta_dbgfs_scale_table_ops = { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2690 | .write = il4965_rs_sta_dbgfs_scale_table_write, |
| 2691 | .read = il4965_rs_sta_dbgfs_scale_table_read, |
Stephen Boyd | 234e340 | 2012-04-05 14:25:11 -0700 | [diff] [blame] | 2692 | .open = simple_open, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2693 | .llseek = default_llseek, |
| 2694 | }; |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2695 | |
| 2696 | static ssize_t |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 2697 | il4965_rs_sta_dbgfs_stats_table_read(struct file *file, char __user *user_buf, |
| 2698 | size_t count, loff_t *ppos) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2699 | { |
| 2700 | char *buff; |
| 2701 | int desc = 0; |
| 2702 | int i, j; |
| 2703 | ssize_t ret; |
| 2704 | |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2705 | struct il_lq_sta *lq_sta = file->private_data; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2706 | |
| 2707 | buff = kmalloc(1024, GFP_KERNEL); |
| 2708 | if (!buff) |
| 2709 | return -ENOMEM; |
| 2710 | |
| 2711 | for (i = 0; i < LQ_SIZE; i++) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2712 | desc += |
| 2713 | sprintf(buff + desc, |
| 2714 | "%s type=%d SGI=%d HT40=%d DUP=%d GF=%d\n" |
| 2715 | "rate=0x%X\n", lq_sta->active_tbl == i ? "*" : "x", |
| 2716 | lq_sta->lq_info[i].lq_type, |
| 2717 | lq_sta->lq_info[i].is_SGI, |
| 2718 | lq_sta->lq_info[i].is_ht40, |
| 2719 | lq_sta->lq_info[i].is_dup, lq_sta->is_green, |
| 2720 | lq_sta->lq_info[i].current_rate); |
Stanislaw Gruszka | 2eb0581 | 2011-08-26 16:07:43 +0200 | [diff] [blame] | 2721 | for (j = 0; j < RATE_COUNT; j++) { |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2722 | desc += |
| 2723 | sprintf(buff + desc, |
| 2724 | "counter=%d success=%d %%=%d\n", |
| 2725 | lq_sta->lq_info[i].win[j].counter, |
| 2726 | lq_sta->lq_info[i].win[j].success_counter, |
| 2727 | lq_sta->lq_info[i].win[j].success_ratio); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2728 | } |
| 2729 | } |
| 2730 | ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); |
| 2731 | kfree(buff); |
| 2732 | return ret; |
| 2733 | } |
| 2734 | |
| 2735 | static const struct file_operations rs_sta_dbgfs_stats_table_ops = { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2736 | .read = il4965_rs_sta_dbgfs_stats_table_read, |
Stephen Boyd | 234e340 | 2012-04-05 14:25:11 -0700 | [diff] [blame] | 2737 | .open = simple_open, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2738 | .llseek = default_llseek, |
| 2739 | }; |
| 2740 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2741 | static ssize_t |
| 2742 | il4965_rs_sta_dbgfs_rate_scale_data_read(struct file *file, |
Stanislaw Gruszka | 1722f8e | 2011-11-15 14:51:01 +0100 | [diff] [blame] | 2743 | char __user *user_buf, size_t count, |
| 2744 | loff_t *ppos) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2745 | { |
| 2746 | char buff[120]; |
| 2747 | int desc = 0; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2748 | struct il_lq_sta *lq_sta = file->private_data; |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2749 | struct il_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2750 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2751 | if (is_Ht(tbl->lq_type)) |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2752 | desc += |
| 2753 | sprintf(buff + desc, "Bit Rate= %d Mb/s\n", |
| 2754 | tbl->expected_tpt[lq_sta->last_txrate_idx]); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2755 | else |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2756 | desc += |
| 2757 | sprintf(buff + desc, "Bit Rate= %d Mb/s\n", |
| 2758 | il_rates[lq_sta->last_txrate_idx].ieee >> 1); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2759 | |
Greg Dietsche | e3a2c77 | 2011-09-06 18:25:32 -0500 | [diff] [blame] | 2760 | return simple_read_from_buffer(user_buf, count, ppos, buff, desc); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2761 | } |
| 2762 | |
| 2763 | static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = { |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2764 | .read = il4965_rs_sta_dbgfs_rate_scale_data_read, |
Stephen Boyd | 234e340 | 2012-04-05 14:25:11 -0700 | [diff] [blame] | 2765 | .open = simple_open, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2766 | .llseek = default_llseek, |
| 2767 | }; |
| 2768 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2769 | static void |
| 2770 | il4965_rs_add_debugfs(void *il, void *il_sta, struct dentry *dir) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2771 | { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2772 | struct il_lq_sta *lq_sta = il_sta; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2773 | lq_sta->rs_sta_dbgfs_scale_table_file = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2774 | debugfs_create_file("rate_scale_table", S_IRUSR | S_IWUSR, dir, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2775 | lq_sta, &rs_sta_dbgfs_scale_table_ops); |
| 2776 | lq_sta->rs_sta_dbgfs_stats_table_file = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2777 | debugfs_create_file("rate_stats_table", S_IRUSR, dir, lq_sta, |
| 2778 | &rs_sta_dbgfs_stats_table_ops); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2779 | lq_sta->rs_sta_dbgfs_rate_scale_data_file = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2780 | debugfs_create_file("rate_scale_data", S_IRUSR, dir, lq_sta, |
| 2781 | &rs_sta_dbgfs_rate_scale_data_ops); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2782 | lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file = |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2783 | debugfs_create_u8("tx_agg_tid_enable", S_IRUSR | S_IWUSR, dir, |
| 2784 | &lq_sta->tx_agg_tid_en); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2785 | |
| 2786 | } |
| 2787 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2788 | static void |
| 2789 | il4965_rs_remove_debugfs(void *il, void *il_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2790 | { |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2791 | struct il_lq_sta *lq_sta = il_sta; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2792 | debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file); |
| 2793 | debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); |
| 2794 | debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file); |
| 2795 | debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file); |
| 2796 | } |
| 2797 | #endif |
| 2798 | |
| 2799 | /* |
| 2800 | * Initialization of rate scaling information is done by driver after |
| 2801 | * the station is added. Since mac80211 calls this function before a |
| 2802 | * station is added we ignore it. |
| 2803 | */ |
| 2804 | static void |
Stanislaw Gruszka | 46bc8d4 | 2011-10-24 16:49:25 +0200 | [diff] [blame] | 2805 | il4965_rs_rate_init_stub(void *il_r, struct ieee80211_supported_band *sband, |
| 2806 | struct ieee80211_sta *sta, void *il_sta) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2807 | { |
| 2808 | } |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2809 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2810 | static struct rate_control_ops rs_4965_ops = { |
| 2811 | .module = NULL, |
Stanislaw Gruszka | d317516 | 2011-11-15 11:25:42 +0100 | [diff] [blame] | 2812 | .name = IL4965_RS_NAME, |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2813 | .tx_status = il4965_rs_tx_status, |
| 2814 | .get_rate = il4965_rs_get_rate, |
| 2815 | .rate_init = il4965_rs_rate_init_stub, |
| 2816 | .alloc = il4965_rs_alloc, |
| 2817 | .free = il4965_rs_free, |
| 2818 | .alloc_sta = il4965_rs_alloc_sta, |
| 2819 | .free_sta = il4965_rs_free_sta, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2820 | #ifdef CONFIG_MAC80211_DEBUGFS |
Stanislaw Gruszka | e2ebc83 | 2011-10-24 15:41:30 +0200 | [diff] [blame] | 2821 | .add_sta_debugfs = il4965_rs_add_debugfs, |
| 2822 | .remove_sta_debugfs = il4965_rs_remove_debugfs, |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2823 | #endif |
| 2824 | }; |
| 2825 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2826 | int |
| 2827 | il4965_rate_control_register(void) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2828 | { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2829 | return ieee80211_rate_control_register(&rs_4965_ops); |
| 2830 | } |
| 2831 | |
Stanislaw Gruszka | e739236 | 2011-11-15 14:45:59 +0100 | [diff] [blame] | 2832 | void |
| 2833 | il4965_rate_control_unregister(void) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2834 | { |
| 2835 | ieee80211_rate_control_unregister(&rs_4965_ops); |
| 2836 | } |