Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Video54 Technologies, Inc. |
| 3 | * Copyright (c) 2004-2008 Atheros Communications, Inc. |
| 4 | * |
| 5 | * Permission to use, copy, modify, and/or distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
Sujith | 394cf0a | 2009-02-09 13:26:54 +0530 | [diff] [blame] | 18 | #include "ath9k.h" |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 19 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 20 | static struct ath_rate_table ar5416_11na_ratetable = { |
| 21 | 42, |
| 22 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 23 | { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 24 | 5400, 0x0b, 0x00, 12, |
| 25 | 0, 2, 1, 0, 0, 0, 0, 0 }, |
Sujith | e832435 | 2009-01-16 21:38:42 +0530 | [diff] [blame] | 26 | { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 27 | 7800, 0x0f, 0x00, 18, |
| 28 | 0, 3, 1, 1, 1, 1, 1, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 29 | { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 30 | 10000, 0x0a, 0x00, 24, |
| 31 | 2, 4, 2, 2, 2, 2, 2, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 32 | { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 33 | 13900, 0x0e, 0x00, 36, |
| 34 | 2, 6, 2, 3, 3, 3, 3, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 35 | { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 36 | 17300, 0x09, 0x00, 48, |
| 37 | 4, 10, 3, 4, 4, 4, 4, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 38 | { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 39 | 23000, 0x0d, 0x00, 72, |
| 40 | 4, 14, 3, 5, 5, 5, 5, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 41 | { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 42 | 27400, 0x08, 0x00, 96, |
| 43 | 4, 20, 3, 6, 6, 6, 6, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 44 | { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 45 | 29300, 0x0c, 0x00, 108, |
| 46 | 4, 23, 3, 7, 7, 7, 7, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 47 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 48 | 6400, 0x80, 0x00, 0, |
| 49 | 0, 2, 3, 8, 24, 8, 24, 3216 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 50 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 51 | 12700, 0x81, 0x00, 1, |
| 52 | 2, 4, 3, 9, 25, 9, 25, 6434 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 53 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 54 | 18800, 0x82, 0x00, 2, |
| 55 | 2, 6, 3, 10, 26, 10, 26, 9650 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 56 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 57 | 25000, 0x83, 0x00, 3, |
| 58 | 4, 10, 3, 11, 27, 11, 27, 12868 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 59 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 60 | 36700, 0x84, 0x00, 4, |
| 61 | 4, 14, 3, 12, 28, 12, 28, 19304 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 62 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 63 | 48100, 0x85, 0x00, 5, |
| 64 | 4, 20, 3, 13, 29, 13, 29, 25740 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 65 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 66 | 53500, 0x86, 0x00, 6, |
| 67 | 4, 23, 3, 14, 30, 14, 30, 28956 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 68 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 69 | 59000, 0x87, 0x00, 7, |
| 70 | 4, 25, 3, 15, 31, 15, 32, 32180 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 71 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 72 | 12700, 0x88, 0x00, |
| 73 | 8, 0, 2, 3, 16, 33, 16, 33, 6430 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 74 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 75 | 24800, 0x89, 0x00, 9, |
| 76 | 2, 4, 3, 17, 34, 17, 34, 12860 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 77 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 78 | 36600, 0x8a, 0x00, 10, |
| 79 | 2, 6, 3, 18, 35, 18, 35, 19300 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 80 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 81 | 48100, 0x8b, 0x00, 11, |
| 82 | 4, 10, 3, 19, 36, 19, 36, 25736 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 83 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 84 | 69500, 0x8c, 0x00, 12, |
| 85 | 4, 14, 3, 20, 37, 20, 37, 38600 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 86 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 87 | 89500, 0x8d, 0x00, 13, |
| 88 | 4, 20, 3, 21, 38, 21, 38, 51472 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 89 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 90 | 98900, 0x8e, 0x00, 14, |
| 91 | 4, 23, 3, 22, 39, 22, 39, 57890 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 92 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 93 | 108300, 0x8f, 0x00, 15, |
| 94 | 4, 25, 3, 23, 40, 23, 41, 64320 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 95 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 96 | 13200, 0x80, 0x00, 0, |
| 97 | 0, 2, 3, 8, 24, 24, 24, 6684 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 98 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 99 | 25900, 0x81, 0x00, 1, |
| 100 | 2, 4, 3, 9, 25, 25, 25, 13368 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 101 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 102 | 38600, 0x82, 0x00, 2, |
| 103 | 2, 6, 3, 10, 26, 26, 26, 20052 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 104 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 105 | 49800, 0x83, 0x00, 3, |
| 106 | 4, 10, 3, 11, 27, 27, 27, 26738 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 107 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 108 | 72200, 0x84, 0x00, 4, |
| 109 | 4, 14, 3, 12, 28, 28, 28, 40104 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 110 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 111 | 92900, 0x85, 0x00, 5, |
| 112 | 4, 20, 3, 13, 29, 29, 29, 53476 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 113 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 114 | 102700, 0x86, 0x00, 6, |
| 115 | 4, 23, 3, 14, 30, 30, 30, 60156 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 116 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 117 | 112000, 0x87, 0x00, 7, |
| 118 | 4, 25, 3, 15, 31, 32, 32, 66840 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 119 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 120 | 122000, 0x87, 0x00, 7, |
| 121 | 4, 25, 3, 15, 31, 32, 32, 74200 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 122 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 123 | 25800, 0x88, 0x00, 8, |
| 124 | 0, 2, 3, 16, 33, 33, 33, 13360 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 125 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 126 | 49800, 0x89, 0x00, 9, |
| 127 | 2, 4, 3, 17, 34, 34, 34, 26720 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 128 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 129 | 71900, 0x8a, 0x00, 10, |
| 130 | 2, 6, 3, 18, 35, 35, 35, 40080 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 131 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 132 | 92500, 0x8b, 0x00, 11, |
| 133 | 4, 10, 3, 19, 36, 36, 36, 53440 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 134 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 135 | 130300, 0x8c, 0x00, 12, |
| 136 | 4, 14, 3, 20, 37, 37, 37, 80160 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 137 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 138 | 162800, 0x8d, 0x00, 13, |
| 139 | 4, 20, 3, 21, 38, 38, 38, 106880 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 140 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 141 | 178200, 0x8e, 0x00, 14, |
| 142 | 4, 23, 3, 22, 39, 39, 39, 120240 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 143 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 144 | 192100, 0x8f, 0x00, 15, |
| 145 | 4, 25, 3, 23, 40, 41, 41, 133600 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 146 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 147 | 207000, 0x8f, 0x00, 15, |
| 148 | 4, 25, 3, 23, 40, 41, 41, 148400 }, |
| 149 | }, |
| 150 | 50, /* probe interval */ |
| 151 | 50, /* rssi reduce interval */ |
| 152 | WLAN_RC_HT_FLAG, /* Phy rates allowed initially */ |
| 153 | }; |
| 154 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 155 | /* 4ms frame limit not used for NG mode. The values filled |
| 156 | * for HT are the 64K max aggregate limit */ |
| 157 | |
| 158 | static struct ath_rate_table ar5416_11ng_ratetable = { |
| 159 | 46, |
| 160 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 161 | { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 162 | 900, 0x1b, 0x00, 2, |
| 163 | 0, 0, 1, 0, 0, 0, 0, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 164 | { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 165 | 1900, 0x1a, 0x04, 4, |
| 166 | 1, 1, 1, 1, 1, 1, 1, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 167 | { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 168 | 4900, 0x19, 0x04, 11, |
| 169 | 2, 2, 2, 2, 2, 2, 2, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 170 | { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 171 | 8100, 0x18, 0x04, 22, |
| 172 | 3, 3, 2, 3, 3, 3, 3, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 173 | { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 174 | 5400, 0x0b, 0x00, 12, |
| 175 | 4, 2, 1, 4, 4, 4, 4, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 176 | { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 177 | 7800, 0x0f, 0x00, 18, |
| 178 | 4, 3, 1, 5, 5, 5, 5, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 179 | { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 180 | 10100, 0x0a, 0x00, 24, |
| 181 | 6, 4, 1, 6, 6, 6, 6, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 182 | { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 183 | 14100, 0x0e, 0x00, 36, |
| 184 | 6, 6, 2, 7, 7, 7, 7, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 185 | { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 186 | 17700, 0x09, 0x00, 48, |
| 187 | 8, 10, 3, 8, 8, 8, 8, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 188 | { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 189 | 23700, 0x0d, 0x00, 72, |
| 190 | 8, 14, 3, 9, 9, 9, 9, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 191 | { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 192 | 27400, 0x08, 0x00, 96, |
| 193 | 8, 20, 3, 10, 10, 10, 10, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 194 | { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 195 | 30900, 0x0c, 0x00, 108, |
| 196 | 8, 23, 3, 11, 11, 11, 11, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 197 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 198 | 6400, 0x80, 0x00, 0, |
| 199 | 4, 2, 3, 12, 28, 12, 28, 3216 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 200 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 201 | 12700, 0x81, 0x00, 1, |
| 202 | 6, 4, 3, 13, 29, 13, 29, 6434 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 203 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 204 | 18800, 0x82, 0x00, 2, |
| 205 | 6, 6, 3, 14, 30, 14, 30, 9650 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 206 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 207 | 25000, 0x83, 0x00, 3, |
| 208 | 8, 10, 3, 15, 31, 15, 31, 12868 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 209 | { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 210 | 36700, 0x84, 0x00, 4, |
| 211 | 8, 14, 3, 16, 32, 16, 32, 19304 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 212 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 213 | 48100, 0x85, 0x00, 5, |
| 214 | 8, 20, 3, 17, 33, 17, 33, 25740 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 215 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 216 | 53500, 0x86, 0x00, 6, |
| 217 | 8, 23, 3, 18, 34, 18, 34, 28956 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 218 | { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 219 | 59000, 0x87, 0x00, 7, |
| 220 | 8, 25, 3, 19, 35, 19, 36, 32180 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 221 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 222 | 12700, 0x88, 0x00, 8, |
| 223 | 4, 2, 3, 20, 37, 20, 37, 6430 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 224 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 225 | 24800, 0x89, 0x00, 9, |
| 226 | 6, 4, 3, 21, 38, 21, 38, 12860 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 227 | { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 228 | 36600, 0x8a, 0x00, 10, |
| 229 | 6, 6, 3, 22, 39, 22, 39, 19300 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 230 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 231 | 48100, 0x8b, 0x00, 11, |
| 232 | 8, 10, 3, 23, 40, 23, 40, 25736 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 233 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 234 | 69500, 0x8c, 0x00, 12, |
| 235 | 8, 14, 3, 24, 41, 24, 41, 38600 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 236 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 237 | 89500, 0x8d, 0x00, 13, |
| 238 | 8, 20, 3, 25, 42, 25, 42, 51472 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 239 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 240 | 98900, 0x8e, 0x00, 14, |
| 241 | 8, 23, 3, 26, 43, 26, 44, 57890 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 242 | { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 243 | 108300, 0x8f, 0x00, 15, |
| 244 | 8, 25, 3, 27, 44, 27, 45, 64320 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 245 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 246 | 13200, 0x80, 0x00, 0, |
| 247 | 8, 2, 3, 12, 28, 28, 28, 6684 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 248 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 249 | 25900, 0x81, 0x00, 1, |
| 250 | 8, 4, 3, 13, 29, 29, 29, 13368 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 251 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 252 | 38600, 0x82, 0x00, 2, |
| 253 | 8, 6, 3, 14, 30, 30, 30, 20052 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 254 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 255 | 49800, 0x83, 0x00, 3, |
| 256 | 8, 10, 3, 15, 31, 31, 31, 26738 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 257 | { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 258 | 72200, 0x84, 0x00, 4, |
| 259 | 8, 14, 3, 16, 32, 32, 32, 40104 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 260 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 261 | 92900, 0x85, 0x00, 5, |
| 262 | 8, 20, 3, 17, 33, 33, 33, 53476 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 263 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 264 | 102700, 0x86, 0x00, 6, |
| 265 | 8, 23, 3, 18, 34, 34, 34, 60156 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 266 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 267 | 112000, 0x87, 0x00, 7, |
| 268 | 8, 23, 3, 19, 35, 36, 36, 66840 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 269 | { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 270 | 122000, 0x87, 0x00, 7, |
| 271 | 8, 25, 3, 19, 35, 36, 36, 74200 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 272 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 273 | 25800, 0x88, 0x00, 8, |
| 274 | 8, 2, 3, 20, 37, 37, 37, 13360 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 275 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 276 | 49800, 0x89, 0x00, 9, |
| 277 | 8, 4, 3, 21, 38, 38, 38, 26720 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 278 | { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 279 | 71900, 0x8a, 0x00, 10, |
| 280 | 8, 6, 3, 22, 39, 39, 39, 40080 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 281 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 282 | 92500, 0x8b, 0x00, 11, |
| 283 | 8, 10, 3, 23, 40, 40, 40, 53440 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 284 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 285 | 130300, 0x8c, 0x00, 12, |
| 286 | 8, 14, 3, 24, 41, 41, 41, 80160 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 287 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 288 | 162800, 0x8d, 0x00, 13, |
| 289 | 8, 20, 3, 25, 42, 42, 42, 106880 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 290 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 291 | 178200, 0x8e, 0x00, 14, |
| 292 | 8, 23, 3, 26, 43, 43, 43, 120240 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 293 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 294 | 192100, 0x8f, 0x00, 15, |
| 295 | 8, 23, 3, 27, 44, 45, 45, 133600 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 296 | { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 297 | 207000, 0x8f, 0x00, 15, |
| 298 | 8, 25, 3, 27, 44, 45, 45, 148400 }, |
| 299 | }, |
| 300 | 50, /* probe interval */ |
| 301 | 50, /* rssi reduce interval */ |
| 302 | WLAN_RC_HT_FLAG, /* Phy rates allowed initially */ |
| 303 | }; |
| 304 | |
| 305 | static struct ath_rate_table ar5416_11a_ratetable = { |
| 306 | 8, |
| 307 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 308 | { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 309 | 5400, 0x0b, 0x00, (0x80|12), |
| 310 | 0, 2, 1, 0, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 311 | { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 312 | 7800, 0x0f, 0x00, 18, |
| 313 | 0, 3, 1, 1, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 314 | { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 315 | 10000, 0x0a, 0x00, (0x80|24), |
| 316 | 2, 4, 2, 2, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 317 | { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 318 | 13900, 0x0e, 0x00, 36, |
| 319 | 2, 6, 2, 3, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 320 | { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 321 | 17300, 0x09, 0x00, (0x80|48), |
| 322 | 4, 10, 3, 4, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 323 | { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 324 | 23000, 0x0d, 0x00, 72, |
| 325 | 4, 14, 3, 5, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 326 | { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 327 | 27400, 0x08, 0x00, 96, |
| 328 | 4, 19, 3, 6, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 329 | { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 330 | 29300, 0x0c, 0x00, 108, |
| 331 | 4, 23, 3, 7, 0 }, |
| 332 | }, |
| 333 | 50, /* probe interval */ |
| 334 | 50, /* rssi reduce interval */ |
| 335 | 0, /* Phy rates allowed initially */ |
| 336 | }; |
| 337 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 338 | static struct ath_rate_table ar5416_11g_ratetable = { |
| 339 | 12, |
| 340 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 341 | { VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 342 | 900, 0x1b, 0x00, 2, |
| 343 | 0, 0, 1, 0, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 344 | { VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 345 | 1900, 0x1a, 0x04, 4, |
| 346 | 1, 1, 1, 1, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 347 | { VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 348 | 4900, 0x19, 0x04, 11, |
| 349 | 2, 2, 2, 2, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 350 | { VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 351 | 8100, 0x18, 0x04, 22, |
| 352 | 3, 3, 2, 3, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 353 | { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 354 | 5400, 0x0b, 0x00, 12, |
| 355 | 4, 2, 1, 4, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 356 | { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 357 | 7800, 0x0f, 0x00, 18, |
| 358 | 4, 3, 1, 5, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 359 | { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 360 | 10000, 0x0a, 0x00, 24, |
| 361 | 6, 4, 1, 6, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 362 | { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 363 | 13900, 0x0e, 0x00, 36, |
| 364 | 6, 6, 2, 7, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 365 | { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 366 | 17300, 0x09, 0x00, 48, |
| 367 | 8, 10, 3, 8, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 368 | { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 369 | 23000, 0x0d, 0x00, 72, |
| 370 | 8, 14, 3, 9, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 371 | { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 372 | 27400, 0x08, 0x00, 96, |
| 373 | 8, 19, 3, 10, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 374 | { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 375 | 29300, 0x0c, 0x00, 108, |
| 376 | 8, 23, 3, 11, 0 }, |
| 377 | }, |
| 378 | 50, /* probe interval */ |
| 379 | 50, /* rssi reduce interval */ |
| 380 | 0, /* Phy rates allowed initially */ |
| 381 | }; |
| 382 | |
| 383 | static struct ath_rate_table ar5416_11b_ratetable = { |
| 384 | 4, |
| 385 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 386 | { VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 387 | 900, 0x1b, 0x00, (0x80|2), |
| 388 | 0, 0, 1, 0, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 389 | { VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 390 | 1800, 0x1a, 0x04, (0x80|4), |
| 391 | 1, 1, 1, 1, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 392 | { VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 393 | 4300, 0x19, 0x04, (0x80|11), |
| 394 | 1, 2, 2, 2, 0 }, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 395 | { VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 396 | 7100, 0x18, 0x04, (0x80|22), |
| 397 | 1, 4, 100, 3, 0 }, |
| 398 | }, |
| 399 | 100, /* probe interval */ |
| 400 | 100, /* rssi reduce interval */ |
| 401 | 0, /* Phy rates allowed initially */ |
| 402 | }; |
| 403 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 404 | static inline int8_t median(int8_t a, int8_t b, int8_t c) |
| 405 | { |
| 406 | if (a >= b) { |
| 407 | if (b >= c) |
| 408 | return b; |
| 409 | else if (a > c) |
| 410 | return c; |
| 411 | else |
| 412 | return a; |
| 413 | } else { |
| 414 | if (a >= c) |
| 415 | return a; |
| 416 | else if (b >= c) |
| 417 | return c; |
| 418 | else |
| 419 | return b; |
| 420 | } |
| 421 | } |
| 422 | |
Sujith | fe7f4a7 | 2008-11-18 09:07:06 +0530 | [diff] [blame] | 423 | static void ath_rc_sort_validrates(struct ath_rate_table *rate_table, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 424 | struct ath_rate_priv *ath_rc_priv) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 425 | { |
| 426 | u8 i, j, idx, idx_next; |
| 427 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 428 | for (i = ath_rc_priv->max_valid_rate - 1; i > 0; i--) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 429 | for (j = 0; j <= i-1; j++) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 430 | idx = ath_rc_priv->valid_rate_index[j]; |
| 431 | idx_next = ath_rc_priv->valid_rate_index[j+1]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 432 | |
| 433 | if (rate_table->info[idx].ratekbps > |
| 434 | rate_table->info[idx_next].ratekbps) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 435 | ath_rc_priv->valid_rate_index[j] = idx_next; |
| 436 | ath_rc_priv->valid_rate_index[j+1] = idx; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 437 | } |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 442 | static void ath_rc_init_valid_txmask(struct ath_rate_priv *ath_rc_priv) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 443 | { |
| 444 | u8 i; |
| 445 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 446 | for (i = 0; i < ath_rc_priv->rate_table_size; i++) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 447 | ath_rc_priv->valid_rate_index[i] = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 448 | } |
| 449 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 450 | static inline void ath_rc_set_valid_txmask(struct ath_rate_priv *ath_rc_priv, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 451 | u8 index, int valid_tx_rate) |
| 452 | { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 453 | ASSERT(index <= ath_rc_priv->rate_table_size); |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 454 | ath_rc_priv->valid_rate_index[index] = valid_tx_rate ? 1 : 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 455 | } |
| 456 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 457 | static inline int ath_rc_isvalid_txmask(struct ath_rate_priv *ath_rc_priv, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 458 | u8 index) |
| 459 | { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 460 | ASSERT(index <= ath_rc_priv->rate_table_size); |
| 461 | return ath_rc_priv->valid_rate_index[index]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 464 | static inline int ath_rc_get_nextvalid_txrate(struct ath_rate_table *rate_table, |
| 465 | struct ath_rate_priv *ath_rc_priv, |
| 466 | u8 cur_valid_txrate, |
| 467 | u8 *next_idx) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 468 | { |
| 469 | u8 i; |
| 470 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 471 | for (i = 0; i < ath_rc_priv->max_valid_rate - 1; i++) { |
| 472 | if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) { |
| 473 | *next_idx = ath_rc_priv->valid_rate_index[i+1]; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 474 | return 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 475 | } |
| 476 | } |
| 477 | |
| 478 | /* No more valid rates */ |
| 479 | *next_idx = 0; |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 480 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 481 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | /* Return true only for single stream */ |
| 485 | |
| 486 | static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw) |
| 487 | { |
Jouni Malinen | b657ead | 2009-01-13 14:33:49 +0200 | [diff] [blame] | 488 | if (WLAN_RC_PHY_HT(phy) && !(capflag & WLAN_RC_HT_FLAG)) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 489 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 490 | if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG)) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 491 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 492 | if (WLAN_RC_PHY_SGI(phy) && !(capflag & WLAN_RC_SGI_FLAG)) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 493 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 494 | if (!ignore_cw && WLAN_RC_PHY_HT(phy)) |
| 495 | if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG)) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 496 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 497 | if (!WLAN_RC_PHY_40(phy) && (capflag & WLAN_RC_40_FLAG)) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 498 | return 0; |
| 499 | return 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | static inline int |
Sujith | fe7f4a7 | 2008-11-18 09:07:06 +0530 | [diff] [blame] | 503 | ath_rc_get_nextlowervalid_txrate(struct ath_rate_table *rate_table, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 504 | struct ath_rate_priv *ath_rc_priv, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 505 | u8 cur_valid_txrate, u8 *next_idx) |
| 506 | { |
| 507 | int8_t i; |
| 508 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 509 | for (i = 1; i < ath_rc_priv->max_valid_rate ; i++) { |
| 510 | if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) { |
| 511 | *next_idx = ath_rc_priv->valid_rate_index[i-1]; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 512 | return 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 513 | } |
| 514 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 515 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 516 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 519 | static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv, |
| 520 | struct ath_rate_table *rate_table, |
| 521 | u32 capflag) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 522 | { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 523 | u8 i, hi = 0; |
| 524 | u32 valid; |
| 525 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 526 | for (i = 0; i < rate_table->rate_cnt; i++) { |
| 527 | valid = (ath_rc_priv->single_stream ? |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 528 | rate_table->info[i].valid_single_stream : |
| 529 | rate_table->info[i].valid); |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 530 | if (valid == 1) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 531 | u32 phy = rate_table->info[i].phy; |
| 532 | u8 valid_rate_count = 0; |
| 533 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 534 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 535 | continue; |
| 536 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 537 | valid_rate_count = ath_rc_priv->valid_phy_ratecnt[phy]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 538 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 539 | ath_rc_priv->valid_phy_rateidx[phy][valid_rate_count] = i; |
| 540 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 541 | ath_rc_set_valid_txmask(ath_rc_priv, i, 1); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 542 | hi = A_MAX(hi, i); |
| 543 | } |
| 544 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 545 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 546 | return hi; |
| 547 | } |
| 548 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 549 | static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv, |
| 550 | struct ath_rate_table *rate_table, |
| 551 | struct ath_rateset *rateset, |
| 552 | u32 capflag) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 553 | { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 554 | u8 i, j, hi = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 555 | |
| 556 | /* Use intersection of working rates and valid rates */ |
| 557 | for (i = 0; i < rateset->rs_nrates; i++) { |
| 558 | for (j = 0; j < rate_table->rate_cnt; j++) { |
| 559 | u32 phy = rate_table->info[j].phy; |
| 560 | u32 valid = (ath_rc_priv->single_stream ? |
| 561 | rate_table->info[j].valid_single_stream : |
| 562 | rate_table->info[j].valid); |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 563 | u8 rate = rateset->rs_rates[i]; |
| 564 | u8 dot11rate = rate_table->info[j].dot11rate; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 565 | |
| 566 | /* We allow a rate only if its valid and the |
| 567 | * capflag matches one of the validity |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 568 | * (VALID/VALID_20/VALID_40) flags */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 569 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 570 | if (((rate & 0x7F) == (dot11rate & 0x7F)) && |
| 571 | ((valid & WLAN_RC_CAP_MODE(capflag)) == |
| 572 | WLAN_RC_CAP_MODE(capflag)) && |
| 573 | !WLAN_RC_PHY_HT(phy)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 574 | u8 valid_rate_count = 0; |
| 575 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 576 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 577 | continue; |
| 578 | |
| 579 | valid_rate_count = |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 580 | ath_rc_priv->valid_phy_ratecnt[phy]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 581 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 582 | ath_rc_priv->valid_phy_rateidx[phy] |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 583 | [valid_rate_count] = j; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 584 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 585 | ath_rc_set_valid_txmask(ath_rc_priv, j, 1); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 586 | hi = A_MAX(hi, j); |
| 587 | } |
| 588 | } |
| 589 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 590 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 591 | return hi; |
| 592 | } |
| 593 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 594 | static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv, |
| 595 | struct ath_rate_table *rate_table, |
| 596 | u8 *mcs_set, u32 capflag) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 597 | { |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 598 | struct ath_rateset *rateset = (struct ath_rateset *)mcs_set; |
| 599 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 600 | u8 i, j, hi = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 601 | |
| 602 | /* Use intersection of working rates and valid rates */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 603 | for (i = 0; i < rateset->rs_nrates; i++) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 604 | for (j = 0; j < rate_table->rate_cnt; j++) { |
| 605 | u32 phy = rate_table->info[j].phy; |
| 606 | u32 valid = (ath_rc_priv->single_stream ? |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 607 | rate_table->info[j].valid_single_stream : |
| 608 | rate_table->info[j].valid); |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 609 | u8 rate = rateset->rs_rates[i]; |
| 610 | u8 dot11rate = rate_table->info[j].dot11rate; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 611 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 612 | if (((rate & 0x7F) != (dot11rate & 0x7F)) || |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 613 | !WLAN_RC_PHY_HT(phy) || |
| 614 | !WLAN_RC_PHY_HT_VALID(valid, capflag)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 615 | continue; |
| 616 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 617 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 618 | continue; |
| 619 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 620 | ath_rc_priv->valid_phy_rateidx[phy] |
| 621 | [ath_rc_priv->valid_phy_ratecnt[phy]] = j; |
| 622 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 623 | ath_rc_set_valid_txmask(ath_rc_priv, j, 1); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 624 | hi = A_MAX(hi, j); |
| 625 | } |
| 626 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 627 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 628 | return hi; |
| 629 | } |
| 630 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 631 | static u8 ath_rc_ratefind_ht(struct ath_softc *sc, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 632 | struct ath_rate_priv *ath_rc_priv, |
Sujith | fe7f4a7 | 2008-11-18 09:07:06 +0530 | [diff] [blame] | 633 | struct ath_rate_table *rate_table, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 634 | int *is_probing) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 635 | { |
| 636 | u32 dt, best_thruput, this_thruput, now_msec; |
| 637 | u8 rate, next_rate, best_rate, maxindex, minindex; |
| 638 | int8_t rssi_last, rssi_reduce = 0, index = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 639 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 640 | *is_probing = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 641 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 642 | rssi_last = median(ath_rc_priv->rssi_last, |
| 643 | ath_rc_priv->rssi_last_prev, |
| 644 | ath_rc_priv->rssi_last_prev2); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 645 | |
| 646 | /* |
| 647 | * Age (reduce) last ack rssi based on how old it is. |
| 648 | * The bizarre numbers are so the delta is 160msec, |
| 649 | * meaning we divide by 16. |
| 650 | * 0msec <= dt <= 25msec: don't derate |
| 651 | * 25msec <= dt <= 185msec: derate linearly from 0 to 10dB |
| 652 | * 185msec <= dt: derate by 10dB |
| 653 | */ |
| 654 | |
| 655 | now_msec = jiffies_to_msecs(jiffies); |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 656 | dt = now_msec - ath_rc_priv->rssi_time; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 657 | |
| 658 | if (dt >= 185) |
| 659 | rssi_reduce = 10; |
| 660 | else if (dt >= 25) |
| 661 | rssi_reduce = (u8)((dt - 25) >> 4); |
| 662 | |
| 663 | /* Now reduce rssi_last by rssi_reduce */ |
| 664 | if (rssi_last < rssi_reduce) |
| 665 | rssi_last = 0; |
| 666 | else |
| 667 | rssi_last -= rssi_reduce; |
| 668 | |
| 669 | /* |
| 670 | * Now look up the rate in the rssi table and return it. |
| 671 | * If no rates match then we return 0 (lowest rate) |
| 672 | */ |
| 673 | |
| 674 | best_thruput = 0; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 675 | maxindex = ath_rc_priv->max_valid_rate-1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 676 | |
| 677 | minindex = 0; |
| 678 | best_rate = minindex; |
| 679 | |
| 680 | /* |
| 681 | * Try the higher rate first. It will reduce memory moving time |
| 682 | * if we have very good channel characteristics. |
| 683 | */ |
| 684 | for (index = maxindex; index >= minindex ; index--) { |
| 685 | u8 per_thres; |
| 686 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 687 | rate = ath_rc_priv->valid_rate_index[index]; |
| 688 | if (rate > ath_rc_priv->rate_max_phy) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 689 | continue; |
| 690 | |
| 691 | /* |
| 692 | * For TCP the average collision rate is around 11%, |
| 693 | * so we ignore PERs less than this. This is to |
| 694 | * prevent the rate we are currently using (whose |
| 695 | * PER might be in the 10-15 range because of TCP |
| 696 | * collisions) looking worse than the next lower |
| 697 | * rate whose PER has decayed close to 0. If we |
| 698 | * used to next lower rate, its PER would grow to |
| 699 | * 10-15 and we would be worse off then staying |
| 700 | * at the current rate. |
| 701 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 702 | per_thres = ath_rc_priv->state[rate].per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 703 | if (per_thres < 12) |
| 704 | per_thres = 12; |
| 705 | |
| 706 | this_thruput = rate_table->info[rate].user_ratekbps * |
| 707 | (100 - per_thres); |
| 708 | |
| 709 | if (best_thruput <= this_thruput) { |
| 710 | best_thruput = this_thruput; |
| 711 | best_rate = rate; |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | rate = best_rate; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 716 | ath_rc_priv->rssi_last_lookup = rssi_last; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 717 | |
| 718 | /* |
| 719 | * Must check the actual rate (ratekbps) to account for |
| 720 | * non-monoticity of 11g's rate table |
| 721 | */ |
| 722 | |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 723 | if (rate >= ath_rc_priv->rate_max_phy) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 724 | rate = ath_rc_priv->rate_max_phy; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 725 | |
| 726 | /* Probe the next allowed phy state */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 727 | if (ath_rc_get_nextvalid_txrate(rate_table, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 728 | ath_rc_priv, rate, &next_rate) && |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 729 | (now_msec - ath_rc_priv->probe_time > |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 730 | rate_table->probe_interval) && |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 731 | (ath_rc_priv->hw_maxretry_pktcnt >= 1)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 732 | rate = next_rate; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 733 | ath_rc_priv->probe_rate = rate; |
| 734 | ath_rc_priv->probe_time = now_msec; |
| 735 | ath_rc_priv->hw_maxretry_pktcnt = 0; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 736 | *is_probing = 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 737 | } |
| 738 | } |
| 739 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 740 | if (rate > (ath_rc_priv->rate_table_size - 1)) |
| 741 | rate = ath_rc_priv->rate_table_size - 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 742 | |
| 743 | ASSERT((rate_table->info[rate].valid && !ath_rc_priv->single_stream) || |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 744 | (rate_table->info[rate].valid_single_stream && |
| 745 | ath_rc_priv->single_stream)); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 746 | |
| 747 | return rate; |
| 748 | } |
| 749 | |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 750 | static void ath_rc_rate_set_series(struct ath_rate_table *rate_table, |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 751 | struct ieee80211_tx_rate *rate, |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 752 | struct ieee80211_tx_rate_control *txrc, |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 753 | u8 tries, u8 rix, int rtsctsenable) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 754 | { |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 755 | rate->count = tries; |
| 756 | rate->idx = rix; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 757 | |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 758 | if (txrc->short_preamble) |
| 759 | rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE; |
| 760 | if (txrc->rts || rtsctsenable) |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 761 | rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS; |
| 762 | if (WLAN_RC_PHY_40(rate_table->info[rix].phy)) |
| 763 | rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; |
| 764 | if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy)) |
| 765 | rate->flags |= IEEE80211_TX_RC_SHORT_GI; |
| 766 | if (WLAN_RC_PHY_HT(rate_table->info[rix].phy)) |
| 767 | rate->flags |= IEEE80211_TX_RC_MCS; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 768 | } |
| 769 | |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 770 | static void ath_rc_rate_set_rtscts(struct ath_softc *sc, |
| 771 | struct ath_rate_table *rate_table, |
| 772 | struct ieee80211_tx_info *tx_info) |
| 773 | { |
| 774 | struct ieee80211_tx_rate *rates = tx_info->control.rates; |
| 775 | int i = 0, rix = 0, cix, enable_g_protection = 0; |
| 776 | |
| 777 | /* get the cix for the lowest valid rix */ |
| 778 | for (i = 3; i >= 0; i--) { |
| 779 | if (rates[i].count && (rates[i].idx >= 0)) { |
| 780 | rix = rates[i].idx; |
| 781 | break; |
| 782 | } |
| 783 | } |
| 784 | cix = rate_table->info[rix].ctrl_rate; |
| 785 | |
| 786 | /* All protection frames are transmited at 2Mb/s for 802.11g, |
| 787 | * otherwise we transmit them at 1Mb/s */ |
| 788 | if (sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ && |
| 789 | !conf_is_ht(&sc->hw->conf)) |
| 790 | enable_g_protection = 1; |
| 791 | |
| 792 | /* |
| 793 | * If 802.11g protection is enabled, determine whether to use RTS/CTS or |
| 794 | * just CTS. Note that this is only done for OFDM/HT unicast frames. |
| 795 | */ |
| 796 | if ((sc->sc_flags & SC_OP_PROTECT_ENABLE) && |
| 797 | !(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) && |
| 798 | (rate_table->info[rix].phy == WLAN_RC_PHY_OFDM || |
| 799 | WLAN_RC_PHY_HT(rate_table->info[rix].phy))) { |
| 800 | rates[0].flags |= IEEE80211_TX_RC_USE_CTS_PROTECT; |
| 801 | cix = rate_table->info[enable_g_protection].ctrl_rate; |
| 802 | } |
| 803 | |
| 804 | tx_info->control.rts_cts_rate_idx = cix; |
| 805 | } |
| 806 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 807 | static u8 ath_rc_rate_getidx(struct ath_softc *sc, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 808 | struct ath_rate_priv *ath_rc_priv, |
Sujith | fe7f4a7 | 2008-11-18 09:07:06 +0530 | [diff] [blame] | 809 | struct ath_rate_table *rate_table, |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 810 | u8 rix, u16 stepdown, |
| 811 | u16 min_rate) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 812 | { |
| 813 | u32 j; |
| 814 | u8 nextindex; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 815 | |
| 816 | if (min_rate) { |
| 817 | for (j = RATE_TABLE_SIZE; j > 0; j--) { |
| 818 | if (ath_rc_get_nextlowervalid_txrate(rate_table, |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 819 | ath_rc_priv, rix, &nextindex)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 820 | rix = nextindex; |
| 821 | else |
| 822 | break; |
| 823 | } |
| 824 | } else { |
| 825 | for (j = stepdown; j > 0; j--) { |
| 826 | if (ath_rc_get_nextlowervalid_txrate(rate_table, |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 827 | ath_rc_priv, rix, &nextindex)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 828 | rix = nextindex; |
| 829 | else |
| 830 | break; |
| 831 | } |
| 832 | } |
| 833 | return rix; |
| 834 | } |
| 835 | |
| 836 | static void ath_rc_ratefind(struct ath_softc *sc, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 837 | struct ath_rate_priv *ath_rc_priv, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 838 | struct ieee80211_tx_rate_control *txrc) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 839 | { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 840 | struct ath_rate_table *rate_table; |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 841 | struct sk_buff *skb = txrc->skb; |
| 842 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 843 | struct ieee80211_tx_rate *rates = tx_info->control.rates; |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 844 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
| 845 | __le16 fc = hdr->frame_control; |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 846 | u8 try_per_rate = 0, i = 0, rix, nrix; |
| 847 | int is_probe = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 848 | |
Sujith | 40990ec | 2008-12-07 21:41:37 +0530 | [diff] [blame] | 849 | rate_table = sc->cur_rate_table; |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 850 | rix = ath_rc_ratefind_ht(sc, ath_rc_priv, rate_table, &is_probe); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 851 | nrix = rix; |
| 852 | |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 853 | if (is_probe) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 854 | /* set one try for probe rates. For the |
| 855 | * probes don't enable rts */ |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 856 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 857 | 1, nrix, 0); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 858 | |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 859 | try_per_rate = (ATH_11N_TXMAXTRY/4); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 860 | /* Get the next tried/allowed rate. No RTS for the next series |
| 861 | * after the probe rate |
| 862 | */ |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 863 | nrix = ath_rc_rate_getidx(sc, ath_rc_priv, |
| 864 | rate_table, nrix, 1, 0); |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 865 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 866 | try_per_rate, nrix, 0); |
Vasanthakumar Thiagarajan | 14587ce | 2009-03-12 15:32:54 +0530 | [diff] [blame] | 867 | |
| 868 | tx_info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 869 | } else { |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 870 | try_per_rate = (ATH_11N_TXMAXTRY/4); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 871 | /* Set the choosen rate. No RTS for first series entry. */ |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 872 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 873 | try_per_rate, nrix, 0); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | /* Fill in the other rates for multirate retry */ |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 877 | for ( ; i < 4; i++) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 878 | u8 try_num; |
| 879 | u8 min_rate; |
| 880 | |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 881 | try_num = ((i + 1) == 4) ? |
| 882 | ATH_11N_TXMAXTRY - (try_per_rate * i) : try_per_rate ; |
| 883 | min_rate = (((i + 1) == 4) && 0); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 884 | |
| 885 | nrix = ath_rc_rate_getidx(sc, ath_rc_priv, |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 886 | rate_table, nrix, 1, min_rate); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 887 | /* All other rates in the series have RTS enabled */ |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 888 | ath_rc_rate_set_series(rate_table, &rates[i], txrc, |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 889 | try_num, nrix, 1); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | /* |
| 893 | * NB:Change rate series to enable aggregation when operating |
| 894 | * at lower MCS rates. When first rate in series is MCS2 |
| 895 | * in HT40 @ 2.4GHz, series should look like: |
| 896 | * |
| 897 | * {MCS2, MCS1, MCS0, MCS0}. |
| 898 | * |
| 899 | * When first rate in series is MCS3 in HT20 @ 2.4GHz, series should |
| 900 | * look like: |
| 901 | * |
| 902 | * {MCS3, MCS2, MCS1, MCS1} |
| 903 | * |
| 904 | * So, set fourth rate in series to be same as third one for |
| 905 | * above conditions. |
| 906 | */ |
Sujith | 3706de6 | 2008-12-07 21:42:10 +0530 | [diff] [blame] | 907 | if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) && |
Luis R. Rodriguez | ecf7044 | 2008-12-23 15:58:43 -0800 | [diff] [blame] | 908 | (conf_is_ht(&sc->hw->conf))) { |
Sujith | 40990ec | 2008-12-07 21:41:37 +0530 | [diff] [blame] | 909 | u8 dot11rate = rate_table->info[rix].dot11rate; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 910 | u8 phy = rate_table->info[rix].phy; |
| 911 | if (i == 4 && |
| 912 | ((dot11rate == 2 && phy == WLAN_RC_PHY_HT_40_SS) || |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 913 | (dot11rate == 3 && phy == WLAN_RC_PHY_HT_20_SS))) { |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 914 | rates[3].idx = rates[2].idx; |
| 915 | rates[3].flags = rates[2].flags; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 916 | } |
| 917 | } |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 918 | |
| 919 | /* |
| 920 | * Force hardware to use computed duration for next |
| 921 | * fragment by disabling multi-rate retry, which |
| 922 | * updates duration based on the multi-rate duration table. |
| 923 | * |
| 924 | * FIXME: Fix duration |
| 925 | */ |
| 926 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) && |
| 927 | (ieee80211_has_morefrags(fc) || |
| 928 | (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG))) { |
| 929 | rates[1].count = rates[2].count = rates[3].count = 0; |
| 930 | rates[1].idx = rates[2].idx = rates[3].idx = 0; |
| 931 | rates[0].count = ATH_TXMAXTRY; |
| 932 | } |
| 933 | |
| 934 | /* Setup RTS/CTS */ |
| 935 | ath_rc_rate_set_rtscts(sc, rate_table, tx_info); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 936 | } |
| 937 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 938 | static bool ath_rc_update_per(struct ath_softc *sc, |
| 939 | struct ath_rate_table *rate_table, |
| 940 | struct ath_rate_priv *ath_rc_priv, |
| 941 | struct ath_tx_info_priv *tx_info_priv, |
| 942 | int tx_rate, int xretries, int retries, |
| 943 | u32 now_msec) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 944 | { |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 945 | bool state_change = false; |
| 946 | int count; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 947 | u8 last_per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 948 | static u32 nretry_to_per_lookup[10] = { |
| 949 | 100 * 0 / 1, |
| 950 | 100 * 1 / 4, |
| 951 | 100 * 1 / 2, |
| 952 | 100 * 3 / 4, |
| 953 | 100 * 4 / 5, |
| 954 | 100 * 5 / 6, |
| 955 | 100 * 6 / 7, |
| 956 | 100 * 7 / 8, |
| 957 | 100 * 8 / 9, |
| 958 | 100 * 9 / 10 |
| 959 | }; |
| 960 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 961 | last_per = ath_rc_priv->state[tx_rate].per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 962 | |
| 963 | if (xretries) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 964 | if (xretries == 1) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 965 | ath_rc_priv->state[tx_rate].per += 30; |
| 966 | if (ath_rc_priv->state[tx_rate].per > 100) |
| 967 | ath_rc_priv->state[tx_rate].per = 100; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 968 | } else { |
| 969 | /* xretries == 2 */ |
Julia Lawall | 87c1687 | 2008-11-09 17:56:10 +0100 | [diff] [blame] | 970 | count = ARRAY_SIZE(nretry_to_per_lookup); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 971 | if (retries >= count) |
| 972 | retries = count - 1; |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 973 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 974 | /* new_PER = 7/8*old_PER + 1/8*(currentPER) */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 975 | ath_rc_priv->state[tx_rate].per = |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 976 | (u8)(last_per - (last_per >> 3) + (100 >> 3)); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | /* xretries == 1 or 2 */ |
| 980 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 981 | if (ath_rc_priv->probe_rate == tx_rate) |
| 982 | ath_rc_priv->probe_rate = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 983 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 984 | } else { /* xretries == 0 */ |
Julia Lawall | 87c1687 | 2008-11-09 17:56:10 +0100 | [diff] [blame] | 985 | count = ARRAY_SIZE(nretry_to_per_lookup); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 986 | if (retries >= count) |
| 987 | retries = count - 1; |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 988 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 989 | if (tx_info_priv->n_bad_frames) { |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 990 | /* new_PER = 7/8*old_PER + 1/8*(currentPER) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 991 | * Assuming that n_frames is not 0. The current PER |
| 992 | * from the retries is 100 * retries / (retries+1), |
| 993 | * since the first retries attempts failed, and the |
| 994 | * next one worked. For the one that worked, |
| 995 | * n_bad_frames subframes out of n_frames wored, |
| 996 | * so the PER for that part is |
| 997 | * 100 * n_bad_frames / n_frames, and it contributes |
| 998 | * 100 * n_bad_frames / (n_frames * (retries+1)) to |
| 999 | * the above PER. The expression below is a |
| 1000 | * simplified version of the sum of these two terms. |
| 1001 | */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1002 | if (tx_info_priv->n_frames > 0) { |
| 1003 | int n_frames, n_bad_frames; |
| 1004 | u8 cur_per, new_per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1005 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1006 | n_bad_frames = retries * tx_info_priv->n_frames + |
| 1007 | tx_info_priv->n_bad_frames; |
| 1008 | n_frames = tx_info_priv->n_frames * (retries + 1); |
| 1009 | cur_per = (100 * n_bad_frames / n_frames) >> 3; |
| 1010 | new_per = (u8)(last_per - (last_per >> 3) + cur_per); |
| 1011 | ath_rc_priv->state[tx_rate].per = new_per; |
| 1012 | } |
| 1013 | } else { |
| 1014 | ath_rc_priv->state[tx_rate].per = |
| 1015 | (u8)(last_per - (last_per >> 3) + |
| 1016 | (nretry_to_per_lookup[retries] >> 3)); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1017 | } |
| 1018 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1019 | ath_rc_priv->rssi_last_prev2 = ath_rc_priv->rssi_last_prev; |
| 1020 | ath_rc_priv->rssi_last_prev = ath_rc_priv->rssi_last; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1021 | ath_rc_priv->rssi_last = tx_info_priv->tx.ts_rssi; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1022 | ath_rc_priv->rssi_time = now_msec; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1023 | |
| 1024 | /* |
| 1025 | * If we got at most one retry then increase the max rate if |
| 1026 | * this was a probe. Otherwise, ignore the probe. |
| 1027 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1028 | if (ath_rc_priv->probe_rate && ath_rc_priv->probe_rate == tx_rate) { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1029 | if (retries > 0 || 2 * tx_info_priv->n_bad_frames > |
| 1030 | tx_info_priv->n_frames) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1031 | /* |
| 1032 | * Since we probed with just a single attempt, |
| 1033 | * any retries means the probe failed. Also, |
| 1034 | * if the attempt worked, but more than half |
| 1035 | * the subframes were bad then also consider |
| 1036 | * the probe a failure. |
| 1037 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1038 | ath_rc_priv->probe_rate = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1039 | } else { |
| 1040 | u8 probe_rate = 0; |
| 1041 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1042 | ath_rc_priv->rate_max_phy = |
| 1043 | ath_rc_priv->probe_rate; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1044 | probe_rate = ath_rc_priv->probe_rate; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1045 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1046 | if (ath_rc_priv->state[probe_rate].per > 30) |
| 1047 | ath_rc_priv->state[probe_rate].per = 20; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1048 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1049 | ath_rc_priv->probe_rate = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1050 | |
| 1051 | /* |
| 1052 | * Since this probe succeeded, we allow the next |
| 1053 | * probe twice as soon. This allows the maxRate |
| 1054 | * to move up faster if the probes are |
| 1055 | * succesful. |
| 1056 | */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1057 | ath_rc_priv->probe_time = |
| 1058 | now_msec - rate_table->probe_interval / 2; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | if (retries > 0) { |
| 1063 | /* |
| 1064 | * Don't update anything. We don't know if |
| 1065 | * this was because of collisions or poor signal. |
| 1066 | * |
| 1067 | * Later: if rssi_ack is close to |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1068 | * ath_rc_priv->state[txRate].rssi_thres and we see lots |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1069 | * of retries, then we could increase |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1070 | * ath_rc_priv->state[txRate].rssi_thres. |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1071 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1072 | ath_rc_priv->hw_maxretry_pktcnt = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1073 | } else { |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1074 | int32_t rssi_ackAvg; |
| 1075 | int8_t rssi_thres; |
| 1076 | int8_t rssi_ack_vmin; |
| 1077 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1078 | /* |
| 1079 | * It worked with no retries. First ignore bogus (small) |
| 1080 | * rssi_ack values. |
| 1081 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1082 | if (tx_rate == ath_rc_priv->rate_max_phy && |
| 1083 | ath_rc_priv->hw_maxretry_pktcnt < 255) { |
| 1084 | ath_rc_priv->hw_maxretry_pktcnt++; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1085 | } |
| 1086 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1087 | if (tx_info_priv->tx.ts_rssi < |
| 1088 | rate_table->info[tx_rate].rssi_ack_validmin) |
| 1089 | goto exit; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1090 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1091 | /* Average the rssi */ |
| 1092 | if (tx_rate != ath_rc_priv->rssi_sum_rate) { |
| 1093 | ath_rc_priv->rssi_sum_rate = tx_rate; |
| 1094 | ath_rc_priv->rssi_sum = |
| 1095 | ath_rc_priv->rssi_sum_cnt = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1096 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1097 | |
| 1098 | ath_rc_priv->rssi_sum += tx_info_priv->tx.ts_rssi; |
| 1099 | ath_rc_priv->rssi_sum_cnt++; |
| 1100 | |
| 1101 | if (ath_rc_priv->rssi_sum_cnt < 4) |
| 1102 | goto exit; |
| 1103 | |
| 1104 | rssi_ackAvg = |
| 1105 | (ath_rc_priv->rssi_sum + 2) / 4; |
| 1106 | rssi_thres = |
| 1107 | ath_rc_priv->state[tx_rate].rssi_thres; |
| 1108 | rssi_ack_vmin = |
| 1109 | rate_table->info[tx_rate].rssi_ack_validmin; |
| 1110 | |
| 1111 | ath_rc_priv->rssi_sum = |
| 1112 | ath_rc_priv->rssi_sum_cnt = 0; |
| 1113 | |
| 1114 | /* Now reduce the current rssi threshold */ |
| 1115 | if ((rssi_ackAvg < rssi_thres + 2) && |
| 1116 | (rssi_thres > rssi_ack_vmin)) { |
| 1117 | ath_rc_priv->state[tx_rate].rssi_thres--; |
| 1118 | } |
| 1119 | |
| 1120 | state_change = true; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1121 | } |
| 1122 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1123 | exit: |
| 1124 | return state_change; |
| 1125 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1126 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1127 | /* Update PER, RSSI and whatever else that the code thinks it is doing. |
| 1128 | If you can make sense of all this, you really need to go out more. */ |
| 1129 | |
| 1130 | static void ath_rc_update_ht(struct ath_softc *sc, |
| 1131 | struct ath_rate_priv *ath_rc_priv, |
| 1132 | struct ath_tx_info_priv *tx_info_priv, |
| 1133 | int tx_rate, int xretries, int retries) |
| 1134 | { |
| 1135 | #define CHK_RSSI(rate) \ |
| 1136 | ((ath_rc_priv->state[(rate)].rssi_thres + \ |
| 1137 | rate_table->info[(rate)].rssi_ack_deltamin) > \ |
| 1138 | ath_rc_priv->state[(rate)+1].rssi_thres) |
| 1139 | |
| 1140 | u32 now_msec = jiffies_to_msecs(jiffies); |
| 1141 | int rate; |
| 1142 | u8 last_per; |
| 1143 | bool state_change = false; |
Sujith | 40990ec | 2008-12-07 21:41:37 +0530 | [diff] [blame] | 1144 | struct ath_rate_table *rate_table = sc->cur_rate_table; |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1145 | int size = ath_rc_priv->rate_table_size; |
| 1146 | |
| 1147 | if ((tx_rate < 0) || (tx_rate > rate_table->rate_cnt)) |
| 1148 | return; |
| 1149 | |
| 1150 | /* To compensate for some imbalance between ctrl and ext. channel */ |
| 1151 | |
| 1152 | if (WLAN_RC_PHY_40(rate_table->info[tx_rate].phy)) |
| 1153 | tx_info_priv->tx.ts_rssi = |
| 1154 | tx_info_priv->tx.ts_rssi < 3 ? 0 : |
| 1155 | tx_info_priv->tx.ts_rssi - 3; |
| 1156 | |
| 1157 | last_per = ath_rc_priv->state[tx_rate].per; |
| 1158 | |
| 1159 | /* Update PER first */ |
| 1160 | state_change = ath_rc_update_per(sc, rate_table, ath_rc_priv, |
| 1161 | tx_info_priv, tx_rate, xretries, |
| 1162 | retries, now_msec); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1163 | |
| 1164 | /* |
| 1165 | * If this rate looks bad (high PER) then stop using it for |
| 1166 | * a while (except if we are probing). |
| 1167 | */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1168 | if (ath_rc_priv->state[tx_rate].per >= 55 && tx_rate > 0 && |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1169 | rate_table->info[tx_rate].ratekbps <= |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1170 | rate_table->info[ath_rc_priv->rate_max_phy].ratekbps) { |
| 1171 | ath_rc_get_nextlowervalid_txrate(rate_table, ath_rc_priv, |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1172 | (u8)tx_rate, &ath_rc_priv->rate_max_phy); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1173 | |
| 1174 | /* Don't probe for a little while. */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1175 | ath_rc_priv->probe_time = now_msec; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | if (state_change) { |
| 1179 | /* |
| 1180 | * Make sure the rates above this have higher rssi thresholds. |
| 1181 | * (Note: Monotonicity is kept within the OFDM rates and |
| 1182 | * within the CCK rates. However, no adjustment is |
| 1183 | * made to keep the rssi thresholds monotonically |
| 1184 | * increasing between the CCK and OFDM rates.) |
| 1185 | */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1186 | for (rate = tx_rate; rate < size - 1; rate++) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1187 | if (rate_table->info[rate+1].phy != |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1188 | rate_table->info[tx_rate].phy) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1189 | break; |
| 1190 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1191 | if (CHK_RSSI(rate)) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1192 | ath_rc_priv->state[rate+1].rssi_thres = |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1193 | ath_rc_priv->state[rate].rssi_thres + |
| 1194 | rate_table->info[rate].rssi_ack_deltamin; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | /* Make sure the rates below this have lower rssi thresholds. */ |
| 1199 | for (rate = tx_rate - 1; rate >= 0; rate--) { |
| 1200 | if (rate_table->info[rate].phy != |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1201 | rate_table->info[tx_rate].phy) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1202 | break; |
| 1203 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1204 | if (CHK_RSSI(rate)) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1205 | if (ath_rc_priv->state[rate+1].rssi_thres < |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1206 | rate_table->info[rate].rssi_ack_deltamin) |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1207 | ath_rc_priv->state[rate].rssi_thres = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1208 | else { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1209 | ath_rc_priv->state[rate].rssi_thres = |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1210 | ath_rc_priv->state[rate+1].rssi_thres - |
| 1211 | rate_table->info[rate].rssi_ack_deltamin; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1212 | } |
| 1213 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1214 | if (ath_rc_priv->state[rate].rssi_thres < |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1215 | rate_table->info[rate].rssi_ack_validmin) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1216 | ath_rc_priv->state[rate].rssi_thres = |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1217 | rate_table->info[rate].rssi_ack_validmin; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1218 | } |
| 1219 | } |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | /* Make sure the rates below this have lower PER */ |
| 1224 | /* Monotonicity is kept only for rates below the current rate. */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1225 | if (ath_rc_priv->state[tx_rate].per < last_per) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1226 | for (rate = tx_rate - 1; rate >= 0; rate--) { |
| 1227 | if (rate_table->info[rate].phy != |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1228 | rate_table->info[tx_rate].phy) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1229 | break; |
| 1230 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1231 | if (ath_rc_priv->state[rate].per > |
| 1232 | ath_rc_priv->state[rate+1].per) { |
| 1233 | ath_rc_priv->state[rate].per = |
| 1234 | ath_rc_priv->state[rate+1].per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1235 | } |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | /* Maintain monotonicity for rates above the current rate */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1240 | for (rate = tx_rate; rate < size - 1; rate++) { |
| 1241 | if (ath_rc_priv->state[rate+1].per < |
| 1242 | ath_rc_priv->state[rate].per) |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1243 | ath_rc_priv->state[rate+1].per = |
| 1244 | ath_rc_priv->state[rate].per; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | /* Every so often, we reduce the thresholds and |
| 1248 | * PER (different for CCK and OFDM). */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1249 | if (now_msec - ath_rc_priv->rssi_down_time >= |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1250 | rate_table->rssi_reduce_interval) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1251 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1252 | for (rate = 0; rate < size; rate++) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1253 | if (ath_rc_priv->state[rate].rssi_thres > |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1254 | rate_table->info[rate].rssi_ack_validmin) |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1255 | ath_rc_priv->state[rate].rssi_thres -= 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1256 | } |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1257 | ath_rc_priv->rssi_down_time = now_msec; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1258 | } |
| 1259 | |
| 1260 | /* Every so often, we reduce the thresholds |
| 1261 | * and PER (different for CCK and OFDM). */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1262 | if (now_msec - ath_rc_priv->per_down_time >= |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1263 | rate_table->rssi_reduce_interval) { |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1264 | for (rate = 0; rate < size; rate++) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1265 | ath_rc_priv->state[rate].per = |
| 1266 | 7 * ath_rc_priv->state[rate].per / 8; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1267 | } |
| 1268 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1269 | ath_rc_priv->per_down_time = now_msec; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1270 | } |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1271 | |
Sujith | 9e71279 | 2009-02-20 15:13:20 +0530 | [diff] [blame] | 1272 | ath_debug_stat_retries(sc, tx_rate, xretries, retries, |
| 1273 | ath_rc_priv->state[tx_rate].per); |
Sujith | 029bc43 | 2009-02-04 08:10:26 +0530 | [diff] [blame] | 1274 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1275 | #undef CHK_RSSI |
| 1276 | } |
| 1277 | |
| 1278 | static int ath_rc_get_rateindex(struct ath_rate_table *rate_table, |
| 1279 | struct ieee80211_tx_rate *rate) |
| 1280 | { |
| 1281 | int rix; |
| 1282 | |
| 1283 | if ((rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
| 1284 | (rate->flags & IEEE80211_TX_RC_SHORT_GI)) |
| 1285 | rix = rate_table->info[rate->idx].ht_index; |
| 1286 | else if (rate->flags & IEEE80211_TX_RC_SHORT_GI) |
| 1287 | rix = rate_table->info[rate->idx].sgi_index; |
| 1288 | else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
| 1289 | rix = rate_table->info[rate->idx].cw40index; |
| 1290 | else |
| 1291 | rix = rate_table->info[rate->idx].base_index; |
| 1292 | |
| 1293 | return rix; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1294 | } |
| 1295 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1296 | static void ath_rc_tx_status(struct ath_softc *sc, |
| 1297 | struct ath_rate_priv *ath_rc_priv, |
| 1298 | struct ieee80211_tx_info *tx_info, |
| 1299 | int final_ts_idx, int xretries, int long_retry) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1300 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1301 | struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1302 | struct ath_rate_table *rate_table; |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 1303 | struct ieee80211_tx_rate *rates = tx_info->status.rates; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1304 | u8 flags; |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1305 | u32 i = 0, rix; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1306 | |
Sujith | 40990ec | 2008-12-07 21:41:37 +0530 | [diff] [blame] | 1307 | rate_table = sc->cur_rate_table; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1308 | |
| 1309 | /* |
| 1310 | * If the first rate is not the final index, there |
| 1311 | * are intermediate rate failures to be processed. |
| 1312 | */ |
| 1313 | if (final_ts_idx != 0) { |
| 1314 | /* Process intermediate rates that failed.*/ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1315 | for (i = 0; i < final_ts_idx ; i++) { |
| 1316 | if (rates[i].count != 0 && (rates[i].idx >= 0)) { |
| 1317 | flags = rates[i].flags; |
| 1318 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1319 | /* If HT40 and we have switched mode from |
| 1320 | * 40 to 20 => don't update */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1321 | |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 1322 | if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
Sujith | e63835b | 2008-11-18 09:07:53 +0530 | [diff] [blame] | 1323 | (ath_rc_priv->rc_phy_mode != WLAN_RC_40_FLAG)) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1324 | return; |
Sujith | e63835b | 2008-11-18 09:07:53 +0530 | [diff] [blame] | 1325 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1326 | rix = ath_rc_get_rateindex(rate_table, &rates[i]); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1327 | ath_rc_update_ht(sc, ath_rc_priv, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1328 | tx_info_priv, rix, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1329 | xretries ? 1 : 2, |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1330 | rates[i].count); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1331 | } |
| 1332 | } |
| 1333 | } else { |
| 1334 | /* |
| 1335 | * Handle the special case of MIMO PS burst, where the second |
| 1336 | * aggregate is sent out with only one rate and one try. |
| 1337 | * Treating it as an excessive retry penalizes the rate |
| 1338 | * inordinately. |
| 1339 | */ |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 1340 | if (rates[0].count == 1 && xretries == 1) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1341 | xretries = 2; |
| 1342 | } |
| 1343 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1344 | flags = rates[i].flags; |
| 1345 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1346 | /* If HT40 and we have switched mode from 40 to 20 => don't update */ |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 1347 | if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
Sujith | e63835b | 2008-11-18 09:07:53 +0530 | [diff] [blame] | 1348 | (ath_rc_priv->rc_phy_mode != WLAN_RC_40_FLAG)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1349 | return; |
Sujith | e63835b | 2008-11-18 09:07:53 +0530 | [diff] [blame] | 1350 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1351 | |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1352 | rix = ath_rc_get_rateindex(rate_table, &rates[i]); |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1353 | ath_rc_update_ht(sc, ath_rc_priv, tx_info_priv, rix, |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1354 | xretries, long_retry); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1355 | } |
| 1356 | |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 1357 | static struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc, |
| 1358 | enum ieee80211_band band, |
| 1359 | bool is_ht, bool is_cw_40) |
| 1360 | { |
| 1361 | int mode = 0; |
| 1362 | |
| 1363 | switch(band) { |
| 1364 | case IEEE80211_BAND_2GHZ: |
| 1365 | mode = ATH9K_MODE_11G; |
| 1366 | if (is_ht) |
| 1367 | mode = ATH9K_MODE_11NG_HT20; |
| 1368 | if (is_cw_40) |
| 1369 | mode = ATH9K_MODE_11NG_HT40PLUS; |
| 1370 | break; |
| 1371 | case IEEE80211_BAND_5GHZ: |
| 1372 | mode = ATH9K_MODE_11A; |
| 1373 | if (is_ht) |
| 1374 | mode = ATH9K_MODE_11NA_HT20; |
| 1375 | if (is_cw_40) |
| 1376 | mode = ATH9K_MODE_11NA_HT40PLUS; |
| 1377 | break; |
| 1378 | default: |
Sujith | 04bd463 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1379 | DPRINTF(sc, ATH_DBG_CONFIG, "Invalid band\n"); |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 1380 | return NULL; |
| 1381 | } |
| 1382 | |
| 1383 | BUG_ON(mode >= ATH9K_MODE_MAX); |
| 1384 | |
Sujith | 04bd463 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1385 | DPRINTF(sc, ATH_DBG_CONFIG, "Choosing rate table for mode: %d\n", mode); |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 1386 | return sc->hw_rate_table[mode]; |
| 1387 | } |
| 1388 | |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1389 | static void ath_rc_init(struct ath_softc *sc, |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1390 | struct ath_rate_priv *ath_rc_priv, |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1391 | struct ieee80211_supported_band *sband, |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1392 | struct ieee80211_sta *sta, |
| 1393 | struct ath_rate_table *rate_table) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1394 | { |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1395 | struct ath_rateset *rateset = &ath_rc_priv->neg_rates; |
| 1396 | u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1397 | u8 i, j, k, hi = 0, hthi = 0; |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 1398 | |
| 1399 | if (!rate_table) { |
| 1400 | DPRINTF(sc, ATH_DBG_FATAL, "Rate table not initialized\n"); |
| 1401 | return; |
| 1402 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1403 | |
| 1404 | /* Initial rate table size. Will change depending |
| 1405 | * on the working rate set */ |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1406 | ath_rc_priv->rate_table_size = RATE_TABLE_SIZE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1407 | |
| 1408 | /* Initialize thresholds according to the global rate table */ |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1409 | for (i = 0 ; i < ath_rc_priv->rate_table_size; i++) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1410 | ath_rc_priv->state[i].rssi_thres = |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1411 | rate_table->info[i].rssi_ack_validmin; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1412 | ath_rc_priv->state[i].per = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1413 | } |
| 1414 | |
| 1415 | /* Determine the valid rates */ |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1416 | ath_rc_init_valid_txmask(ath_rc_priv); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1417 | |
| 1418 | for (i = 0; i < WLAN_RC_PHY_MAX; i++) { |
| 1419 | for (j = 0; j < MAX_TX_RATE_PHY; j++) |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1420 | ath_rc_priv->valid_phy_rateidx[i][j] = 0; |
| 1421 | ath_rc_priv->valid_phy_ratecnt[i] = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1422 | } |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1423 | ath_rc_priv->rc_phy_mode = ath_rc_priv->ht_cap & WLAN_RC_40_FLAG; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1424 | |
| 1425 | /* Set stream capability */ |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1426 | ath_rc_priv->single_stream = (ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ? 0 : 1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1427 | |
| 1428 | if (!rateset->rs_nrates) { |
| 1429 | /* No working rate, just initialize valid rates */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1430 | hi = ath_rc_init_validrates(ath_rc_priv, rate_table, |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 1431 | ath_rc_priv->ht_cap); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1432 | } else { |
| 1433 | /* Use intersection of working rates and valid rates */ |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1434 | hi = ath_rc_setvalid_rates(ath_rc_priv, rate_table, |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 1435 | rateset, ath_rc_priv->ht_cap); |
Sujith | 5ddfac3 | 2008-11-18 09:06:44 +0530 | [diff] [blame] | 1436 | if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG) { |
Sujith | 2c5a744 | 2008-11-18 09:08:33 +0530 | [diff] [blame] | 1437 | hthi = ath_rc_setvalid_htrates(ath_rc_priv, |
Sujith | c89424d | 2009-01-30 14:29:28 +0530 | [diff] [blame] | 1438 | rate_table, |
| 1439 | ht_mcs, |
| 1440 | ath_rc_priv->ht_cap); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1441 | } |
| 1442 | hi = A_MAX(hi, hthi); |
| 1443 | } |
| 1444 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1445 | ath_rc_priv->rate_table_size = hi + 1; |
| 1446 | ath_rc_priv->rate_max_phy = 0; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1447 | ASSERT(ath_rc_priv->rate_table_size <= RATE_TABLE_SIZE); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1448 | |
| 1449 | for (i = 0, k = 0; i < WLAN_RC_PHY_MAX; i++) { |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1450 | for (j = 0; j < ath_rc_priv->valid_phy_ratecnt[i]; j++) { |
| 1451 | ath_rc_priv->valid_rate_index[k++] = |
| 1452 | ath_rc_priv->valid_phy_rateidx[i][j]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1453 | } |
| 1454 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1455 | if (!ath_rc_valid_phyrate(i, rate_table->initial_ratemax, 1) |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1456 | || !ath_rc_priv->valid_phy_ratecnt[i]) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1457 | continue; |
| 1458 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1459 | ath_rc_priv->rate_max_phy = ath_rc_priv->valid_phy_rateidx[i][j-1]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1460 | } |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1461 | ASSERT(ath_rc_priv->rate_table_size <= RATE_TABLE_SIZE); |
| 1462 | ASSERT(k <= RATE_TABLE_SIZE); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1463 | |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1464 | ath_rc_priv->max_valid_rate = k; |
Sujith | 256b775 | 2008-11-18 09:03:12 +0530 | [diff] [blame] | 1465 | ath_rc_sort_validrates(rate_table, ath_rc_priv); |
| 1466 | ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4]; |
Sujith | 40990ec | 2008-12-07 21:41:37 +0530 | [diff] [blame] | 1467 | sc->cur_rate_table = rate_table; |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1468 | |
| 1469 | DPRINTF(sc, ATH_DBG_CONFIG, "RC Initialized with capabilities: 0x%x\n", |
| 1470 | ath_rc_priv->ht_cap); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1471 | } |
| 1472 | |
Sujith | c2da50e | 2009-03-13 08:56:11 +0530 | [diff] [blame^] | 1473 | static u8 ath_rc_build_ht_caps(struct ath_softc *sc, struct ieee80211_sta *sta, |
| 1474 | bool is_cw40, bool is_sgi40) |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1475 | { |
| 1476 | u8 caps = 0; |
| 1477 | |
Sujith | c2da50e | 2009-03-13 08:56:11 +0530 | [diff] [blame^] | 1478 | if (sta->ht_cap.ht_supported) { |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1479 | caps = WLAN_RC_HT_FLAG; |
| 1480 | if (sc->sc_ah->caps.tx_chainmask != 1 && |
Sujith | c2da50e | 2009-03-13 08:56:11 +0530 | [diff] [blame^] | 1481 | ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_DS, 0, NULL)) { |
| 1482 | if (sta->ht_cap.mcs.rx_mask[1]) |
| 1483 | caps |= WLAN_RC_DS_FLAG; |
| 1484 | } |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1485 | if (is_cw40) |
| 1486 | caps |= WLAN_RC_40_FLAG; |
| 1487 | if (is_sgi40) |
| 1488 | caps |= WLAN_RC_SGI_FLAG; |
| 1489 | } |
| 1490 | |
| 1491 | return caps; |
| 1492 | } |
| 1493 | |
| 1494 | /***********************************/ |
| 1495 | /* mac80211 Rate Control callbacks */ |
| 1496 | /***********************************/ |
| 1497 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1498 | static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, |
| 1499 | struct ieee80211_sta *sta, void *priv_sta, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1500 | struct sk_buff *skb) |
| 1501 | { |
| 1502 | struct ath_softc *sc = priv; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1503 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
| 1504 | struct ath_tx_info_priv *tx_info_priv = NULL; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1505 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
| 1506 | struct ieee80211_hdr *hdr; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1507 | int final_ts_idx, tx_status = 0, is_underrun = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1508 | __le16 fc; |
| 1509 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1510 | hdr = (struct ieee80211_hdr *)skb->data; |
| 1511 | fc = hdr->frame_control; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1512 | tx_info_priv = ATH_TX_INFO_PRIV(tx_info); |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1513 | final_ts_idx = tx_info_priv->tx.ts_rateindex; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1514 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1515 | if (!priv_sta || !ieee80211_is_data(fc) || |
Vasanthakumar Thiagarajan | 7ac4701 | 2008-11-20 11:51:18 +0530 | [diff] [blame] | 1516 | !tx_info_priv->update_rc) |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1517 | goto exit; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1518 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1519 | if (tx_info_priv->tx.ts_status & ATH9K_TXERR_FILT) |
| 1520 | goto exit; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1521 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1522 | /* |
| 1523 | * If underrun error is seen assume it as an excessive retry only |
| 1524 | * if prefetch trigger level have reached the max (0x3f for 5416) |
| 1525 | * Adjust the long retry as if the frame was tried ATH_11N_TXMAXTRY |
| 1526 | * times. This affects how ratectrl updates PER for the failed rate. |
| 1527 | */ |
| 1528 | if (tx_info_priv->tx.ts_flags & |
| 1529 | (ATH9K_TX_DATA_UNDERRUN | ATH9K_TX_DELIM_UNDERRUN) && |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1530 | ((sc->sc_ah->tx_trig_level) >= ath_rc_priv->tx_triglevel_max)) { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1531 | tx_status = 1; |
| 1532 | is_underrun = 1; |
| 1533 | } |
| 1534 | |
| 1535 | if ((tx_info_priv->tx.ts_status & ATH9K_TXERR_XRETRY) || |
| 1536 | (tx_info_priv->tx.ts_status & ATH9K_TXERR_FIFO)) |
| 1537 | tx_status = 1; |
| 1538 | |
| 1539 | ath_rc_tx_status(sc, ath_rc_priv, tx_info, final_ts_idx, tx_status, |
| 1540 | (is_underrun) ? ATH_11N_TXMAXTRY : |
| 1541 | tx_info_priv->tx.ts_longretry); |
| 1542 | |
Sujith | d22b002 | 2009-01-28 11:55:45 +0530 | [diff] [blame] | 1543 | /* Check if aggregation has to be enabled for this tid */ |
Vasanthakumar Thiagarajan | d5c232f | 2009-02-18 10:22:02 +0530 | [diff] [blame] | 1544 | if (conf_is_ht(&sc->hw->conf) && |
| 1545 | !(skb->protocol == cpu_to_be16(ETH_P_PAE))) { |
Sujith | d22b002 | 2009-01-28 11:55:45 +0530 | [diff] [blame] | 1546 | if (ieee80211_is_data_qos(fc)) { |
| 1547 | u8 *qc, tid; |
| 1548 | struct ath_node *an; |
| 1549 | |
| 1550 | qc = ieee80211_get_qos_ctl(hdr); |
| 1551 | tid = qc[0] & 0xf; |
| 1552 | an = (struct ath_node *)sta->drv_priv; |
| 1553 | |
| 1554 | if(ath_tx_aggr_check(sc, an, tid)) |
| 1555 | ieee80211_start_tx_ba_session(sc->hw, hdr->addr1, tid); |
| 1556 | } |
| 1557 | } |
Sujith | 7a7dec6 | 2009-01-30 14:32:09 +0530 | [diff] [blame] | 1558 | |
| 1559 | ath_debug_stat_rc(sc, skb); |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1560 | exit: |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1561 | kfree(tx_info_priv); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1562 | } |
| 1563 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1564 | static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
| 1565 | struct ieee80211_tx_rate_control *txrc) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1566 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1567 | struct ieee80211_supported_band *sband = txrc->sband; |
| 1568 | struct sk_buff *skb = txrc->skb; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1569 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 1570 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1571 | struct ath_softc *sc = priv; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1572 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1573 | __le16 fc = hdr->frame_control; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1574 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1575 | /* lowest rate for management and multicast/broadcast frames */ |
Jouni Malinen | f66000f | 2008-12-17 13:30:31 +0200 | [diff] [blame] | 1576 | if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1) || |
| 1577 | !sta) { |
Sujith | a8efee4 | 2008-11-18 09:07:30 +0530 | [diff] [blame] | 1578 | tx_info->control.rates[0].idx = rate_lowest_index(sband, sta); |
| 1579 | tx_info->control.rates[0].count = |
| 1580 | is_multicast_ether_addr(hdr->addr1) ? 1 : ATH_MGT_TXMAXTRY; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1581 | return; |
| 1582 | } |
| 1583 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1584 | /* Find tx rate for unicast frames */ |
Sujith | 3900898 | 2009-01-30 14:29:15 +0530 | [diff] [blame] | 1585 | ath_rc_ratefind(sc, ath_rc_priv, txrc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1586 | } |
| 1587 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1588 | static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband, |
| 1589 | struct ieee80211_sta *sta, void *priv_sta) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1590 | { |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1591 | struct ath_softc *sc = priv; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1592 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1593 | struct ath_rate_table *rate_table = NULL; |
| 1594 | bool is_cw40, is_sgi40; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1595 | int i, j = 0; |
| 1596 | |
Sujith | 7b4d273 | 2008-11-18 09:04:00 +0530 | [diff] [blame] | 1597 | for (i = 0; i < sband->n_bitrates; i++) { |
| 1598 | if (sta->supp_rates[sband->band] & BIT(i)) { |
| 1599 | ath_rc_priv->neg_rates.rs_rates[j] |
| 1600 | = (sband->bitrates[i].bitrate * 2) / 10; |
| 1601 | j++; |
| 1602 | } |
| 1603 | } |
| 1604 | ath_rc_priv->neg_rates.rs_nrates = j; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1605 | |
Sujith | a4510bf | 2008-10-23 12:15:19 +0530 | [diff] [blame] | 1606 | if (sta->ht_cap.ht_supported) { |
Sujith | 7b4d273 | 2008-11-18 09:04:00 +0530 | [diff] [blame] | 1607 | for (i = 0, j = 0; i < 77; i++) { |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1608 | if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8))) |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1609 | ath_rc_priv->neg_ht_rates.rs_rates[j++] = i; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1610 | if (j == ATH_RATE_MAX) |
| 1611 | break; |
| 1612 | } |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1613 | ath_rc_priv->neg_ht_rates.rs_nrates = j; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1614 | } |
Sujith | 7b4d273 | 2008-11-18 09:04:00 +0530 | [diff] [blame] | 1615 | |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1616 | is_cw40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| 1617 | is_sgi40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40; |
| 1618 | |
| 1619 | /* Choose rate table first */ |
| 1620 | |
| 1621 | if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) || |
| 1622 | (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)) { |
| 1623 | rate_table = ath_choose_rate_table(sc, sband->band, |
| 1624 | sta->ht_cap.ht_supported, |
| 1625 | is_cw40); |
| 1626 | } else if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) { |
| 1627 | /* cur_rate_table would be set on init through config() */ |
| 1628 | rate_table = sc->cur_rate_table; |
| 1629 | } |
| 1630 | |
Sujith | c2da50e | 2009-03-13 08:56:11 +0530 | [diff] [blame^] | 1631 | ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, is_cw40, is_sgi40); |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1632 | ath_rc_init(sc, priv_sta, sband, sta, rate_table); |
| 1633 | } |
| 1634 | |
| 1635 | static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, |
| 1636 | struct ieee80211_sta *sta, void *priv_sta, |
| 1637 | u32 changed) |
| 1638 | { |
| 1639 | struct ath_softc *sc = priv; |
| 1640 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
| 1641 | struct ath_rate_table *rate_table = NULL; |
| 1642 | bool oper_cw40 = false, oper_sgi40; |
| 1643 | bool local_cw40 = (ath_rc_priv->ht_cap & WLAN_RC_40_FLAG) ? |
| 1644 | true : false; |
| 1645 | bool local_sgi40 = (ath_rc_priv->ht_cap & WLAN_RC_SGI_FLAG) ? |
| 1646 | true : false; |
| 1647 | |
| 1648 | /* FIXME: Handle AP mode later when we support CWM */ |
| 1649 | |
| 1650 | if (changed & IEEE80211_RC_HT_CHANGED) { |
| 1651 | if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION) |
| 1652 | return; |
| 1653 | |
| 1654 | if (sc->hw->conf.channel_type == NL80211_CHAN_HT40MINUS || |
| 1655 | sc->hw->conf.channel_type == NL80211_CHAN_HT40PLUS) |
| 1656 | oper_cw40 = true; |
| 1657 | |
| 1658 | oper_sgi40 = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? |
| 1659 | true : false; |
| 1660 | |
| 1661 | if ((local_cw40 != oper_cw40) || (local_sgi40 != oper_sgi40)) { |
| 1662 | rate_table = ath_choose_rate_table(sc, sband->band, |
| 1663 | sta->ht_cap.ht_supported, |
| 1664 | oper_cw40); |
Sujith | c2da50e | 2009-03-13 08:56:11 +0530 | [diff] [blame^] | 1665 | ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1666 | oper_cw40, oper_sgi40); |
| 1667 | ath_rc_init(sc, priv_sta, sband, sta, rate_table); |
| 1668 | |
| 1669 | DPRINTF(sc, ATH_DBG_CONFIG, |
| 1670 | "Operating HT Bandwidth changed to: %d\n", |
| 1671 | sc->hw->conf.channel_type); |
| 1672 | } |
| 1673 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1674 | } |
| 1675 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1676 | static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1677 | { |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 1678 | struct ath_wiphy *aphy = hw->priv; |
| 1679 | return aphy->sc; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1680 | } |
| 1681 | |
| 1682 | static void ath_rate_free(void *priv) |
| 1683 | { |
| 1684 | return; |
| 1685 | } |
| 1686 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1687 | static void *ath_rate_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1688 | { |
| 1689 | struct ath_softc *sc = priv; |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1690 | struct ath_rate_priv *rate_priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1691 | |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1692 | rate_priv = kzalloc(sizeof(struct ath_rate_priv), gfp); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1693 | if (!rate_priv) { |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1694 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd463 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1695 | "Unable to allocate private rc structure\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1696 | return NULL; |
| 1697 | } |
Sujith | fe60594 | 2008-11-18 09:03:36 +0530 | [diff] [blame] | 1698 | |
Sujith | fe60594 | 2008-11-18 09:03:36 +0530 | [diff] [blame] | 1699 | rate_priv->rssi_down_time = jiffies_to_msecs(jiffies); |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1700 | rate_priv->tx_triglevel_max = sc->sc_ah->caps.tx_triglevel_max; |
Sujith | dc2222a | 2008-08-14 13:26:55 +0530 | [diff] [blame] | 1701 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1702 | return rate_priv; |
| 1703 | } |
| 1704 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1705 | static void ath_rate_free_sta(void *priv, struct ieee80211_sta *sta, |
| 1706 | void *priv_sta) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1707 | { |
Sujith | 46d14a5 | 2008-11-18 09:08:13 +0530 | [diff] [blame] | 1708 | struct ath_rate_priv *rate_priv = priv_sta; |
Sujith | fe60594 | 2008-11-18 09:03:36 +0530 | [diff] [blame] | 1709 | kfree(rate_priv); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1710 | } |
| 1711 | |
| 1712 | static struct rate_control_ops ath_rate_ops = { |
| 1713 | .module = NULL, |
| 1714 | .name = "ath9k_rate_control", |
| 1715 | .tx_status = ath_tx_status, |
| 1716 | .get_rate = ath_get_rate, |
| 1717 | .rate_init = ath_rate_init, |
Sujith | 9331ec8 | 2009-03-02 13:29:45 +0530 | [diff] [blame] | 1718 | .rate_update = ath_rate_update, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1719 | .alloc = ath_rate_alloc, |
| 1720 | .free = ath_rate_free, |
| 1721 | .alloc_sta = ath_rate_alloc_sta, |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1722 | .free_sta = ath_rate_free_sta, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1723 | }; |
| 1724 | |
Sujith | fe7f4a7 | 2008-11-18 09:07:06 +0530 | [diff] [blame] | 1725 | void ath_rate_attach(struct ath_softc *sc) |
| 1726 | { |
| 1727 | sc->hw_rate_table[ATH9K_MODE_11B] = |
| 1728 | &ar5416_11b_ratetable; |
| 1729 | sc->hw_rate_table[ATH9K_MODE_11A] = |
| 1730 | &ar5416_11a_ratetable; |
| 1731 | sc->hw_rate_table[ATH9K_MODE_11G] = |
| 1732 | &ar5416_11g_ratetable; |
| 1733 | sc->hw_rate_table[ATH9K_MODE_11NA_HT20] = |
| 1734 | &ar5416_11na_ratetable; |
| 1735 | sc->hw_rate_table[ATH9K_MODE_11NG_HT20] = |
| 1736 | &ar5416_11ng_ratetable; |
| 1737 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS] = |
| 1738 | &ar5416_11na_ratetable; |
| 1739 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS] = |
| 1740 | &ar5416_11na_ratetable; |
| 1741 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS] = |
| 1742 | &ar5416_11ng_ratetable; |
| 1743 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS] = |
| 1744 | &ar5416_11ng_ratetable; |
| 1745 | } |
| 1746 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1747 | int ath_rate_control_register(void) |
| 1748 | { |
| 1749 | return ieee80211_rate_control_register(&ath_rate_ops); |
| 1750 | } |
| 1751 | |
| 1752 | void ath_rate_control_unregister(void) |
| 1753 | { |
| 1754 | ieee80211_rate_control_unregister(&ath_rate_ops); |
| 1755 | } |