Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting |
| 3 | * Copyright (c) 2004-2005 Atheros Communications, Inc. |
| 4 | * Copyright (c) 2006 Devicescape Software, Inc. |
| 5 | * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> |
| 6 | * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> |
| 7 | * |
| 8 | * All rights reserved. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer, |
| 15 | * without modification. |
| 16 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 17 | * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any |
| 18 | * redistribution must be conditioned upon including a substantially |
| 19 | * similar Disclaimer requirement for further binary redistribution. |
| 20 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 21 | * of any contributors may be used to endorse or promote products derived |
| 22 | * from this software without specific prior written permission. |
| 23 | * |
| 24 | * Alternatively, this software may be distributed under the terms of the |
| 25 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 26 | * Software Foundation. |
| 27 | * |
| 28 | * NO WARRANTY |
| 29 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 30 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 31 | * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY |
| 32 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| 33 | * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, |
| 34 | * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 35 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 36 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| 37 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 38 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 39 | * THE POSSIBILITY OF SUCH DAMAGES. |
| 40 | * |
| 41 | */ |
| 42 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 43 | #include <linux/module.h> |
| 44 | #include <linux/delay.h> |
Jiri Slaby | 274c7c3 | 2008-07-15 17:44:20 +0200 | [diff] [blame] | 45 | #include <linux/hardirq.h> |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 46 | #include <linux/if.h> |
Jiri Slaby | 274c7c3 | 2008-07-15 17:44:20 +0200 | [diff] [blame] | 47 | #include <linux/io.h> |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 48 | #include <linux/netdevice.h> |
| 49 | #include <linux/cache.h> |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 50 | #include <linux/ethtool.h> |
| 51 | #include <linux/uaccess.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 52 | #include <linux/slab.h> |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 53 | #include <linux/etherdevice.h> |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 54 | |
| 55 | #include <net/ieee80211_radiotap.h> |
| 56 | |
| 57 | #include <asm/unaligned.h> |
| 58 | |
| 59 | #include "base.h" |
| 60 | #include "reg.h" |
| 61 | #include "debug.h" |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 62 | #include "ani.h" |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 63 | |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 64 | #define CREATE_TRACE_POINTS |
| 65 | #include "trace.h" |
| 66 | |
John W. Linville | 18cb6e3 | 2011-01-05 09:39:59 -0500 | [diff] [blame] | 67 | int ath5k_modparam_nohwcrypt; |
| 68 | module_param_named(nohwcrypt, ath5k_modparam_nohwcrypt, bool, S_IRUGO); |
Bob Copeland | 9ad9a26 | 2008-10-29 08:30:54 -0400 | [diff] [blame] | 69 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 70 | |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 71 | static int modparam_all_channels; |
Bob Copeland | 46802a4 | 2009-04-15 07:57:34 -0400 | [diff] [blame] | 72 | module_param_named(all_channels, modparam_all_channels, bool, S_IRUGO); |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 73 | MODULE_PARM_DESC(all_channels, "Expose all channels the device can use."); |
| 74 | |
Nick Kossifidis | a99168e | 2011-06-02 03:09:48 +0300 | [diff] [blame] | 75 | static int modparam_fastchanswitch; |
| 76 | module_param_named(fastchanswitch, modparam_fastchanswitch, bool, S_IRUGO); |
| 77 | MODULE_PARM_DESC(fastchanswitch, "Enable fast channel switching for AR2413/AR5413 radios."); |
| 78 | |
| 79 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 80 | /* Module info */ |
| 81 | MODULE_AUTHOR("Jiri Slaby"); |
| 82 | MODULE_AUTHOR("Nick Kossifidis"); |
| 83 | MODULE_DESCRIPTION("Support for 5xxx series of Atheros 802.11 wireless LAN cards."); |
| 84 | MODULE_SUPPORTED_DEVICE("Atheros 5xxx WLAN cards"); |
| 85 | MODULE_LICENSE("Dual BSD/GPL"); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 86 | |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 87 | static int ath5k_init(struct ieee80211_hw *hw); |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 88 | static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan, |
| 89 | bool skip_pcu); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 90 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 91 | /* Known SREVs */ |
Jiri Slaby | 2c91108c | 2009-03-07 10:26:41 +0100 | [diff] [blame] | 92 | static const struct ath5k_srev_name srev_names[] = { |
Felix Fietkau | a0b907e | 2010-12-02 10:27:16 +0100 | [diff] [blame] | 93 | #ifdef CONFIG_ATHEROS_AR231X |
| 94 | { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R2 }, |
| 95 | { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R7 }, |
| 96 | { "2313", AR5K_VERSION_MAC, AR5K_SREV_AR2313_R8 }, |
| 97 | { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R6 }, |
| 98 | { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R7 }, |
| 99 | { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R1 }, |
| 100 | { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R2 }, |
| 101 | #else |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 102 | { "5210", AR5K_VERSION_MAC, AR5K_SREV_AR5210 }, |
| 103 | { "5311", AR5K_VERSION_MAC, AR5K_SREV_AR5311 }, |
| 104 | { "5311A", AR5K_VERSION_MAC, AR5K_SREV_AR5311A }, |
| 105 | { "5311B", AR5K_VERSION_MAC, AR5K_SREV_AR5311B }, |
| 106 | { "5211", AR5K_VERSION_MAC, AR5K_SREV_AR5211 }, |
| 107 | { "5212", AR5K_VERSION_MAC, AR5K_SREV_AR5212 }, |
| 108 | { "5213", AR5K_VERSION_MAC, AR5K_SREV_AR5213 }, |
| 109 | { "5213A", AR5K_VERSION_MAC, AR5K_SREV_AR5213A }, |
| 110 | { "2413", AR5K_VERSION_MAC, AR5K_SREV_AR2413 }, |
| 111 | { "2414", AR5K_VERSION_MAC, AR5K_SREV_AR2414 }, |
| 112 | { "5424", AR5K_VERSION_MAC, AR5K_SREV_AR5424 }, |
| 113 | { "5413", AR5K_VERSION_MAC, AR5K_SREV_AR5413 }, |
| 114 | { "5414", AR5K_VERSION_MAC, AR5K_SREV_AR5414 }, |
| 115 | { "2415", AR5K_VERSION_MAC, AR5K_SREV_AR2415 }, |
| 116 | { "5416", AR5K_VERSION_MAC, AR5K_SREV_AR5416 }, |
| 117 | { "5418", AR5K_VERSION_MAC, AR5K_SREV_AR5418 }, |
| 118 | { "2425", AR5K_VERSION_MAC, AR5K_SREV_AR2425 }, |
| 119 | { "2417", AR5K_VERSION_MAC, AR5K_SREV_AR2417 }, |
Felix Fietkau | a0b907e | 2010-12-02 10:27:16 +0100 | [diff] [blame] | 120 | #endif |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 121 | { "xxxxx", AR5K_VERSION_MAC, AR5K_SREV_UNKNOWN }, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 122 | { "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 }, |
| 123 | { "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 }, |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 124 | { "5111A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111A }, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 125 | { "2111", AR5K_VERSION_RAD, AR5K_SREV_RAD_2111 }, |
| 126 | { "5112", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112 }, |
| 127 | { "5112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112A }, |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 128 | { "5112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112B }, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 129 | { "2112", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112 }, |
| 130 | { "2112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112A }, |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 131 | { "2112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112B }, |
| 132 | { "2413", AR5K_VERSION_RAD, AR5K_SREV_RAD_2413 }, |
| 133 | { "5413", AR5K_VERSION_RAD, AR5K_SREV_RAD_5413 }, |
Nick Kossifidis | 1bef016 | 2008-09-29 02:09:09 +0300 | [diff] [blame] | 134 | { "5424", AR5K_VERSION_RAD, AR5K_SREV_RAD_5424 }, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 135 | { "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 }, |
Felix Fietkau | a0b907e | 2010-12-02 10:27:16 +0100 | [diff] [blame] | 136 | #ifdef CONFIG_ATHEROS_AR231X |
| 137 | { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 }, |
| 138 | { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 }, |
| 139 | #endif |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 140 | { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN }, |
| 141 | }; |
| 142 | |
Jiri Slaby | 2c91108c | 2009-03-07 10:26:41 +0100 | [diff] [blame] | 143 | static const struct ieee80211_rate ath5k_rates[] = { |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 144 | { .bitrate = 10, |
| 145 | .hw_value = ATH5K_RATE_CODE_1M, }, |
| 146 | { .bitrate = 20, |
| 147 | .hw_value = ATH5K_RATE_CODE_2M, |
| 148 | .hw_value_short = ATH5K_RATE_CODE_2M | AR5K_SET_SHORT_PREAMBLE, |
| 149 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 150 | { .bitrate = 55, |
| 151 | .hw_value = ATH5K_RATE_CODE_5_5M, |
| 152 | .hw_value_short = ATH5K_RATE_CODE_5_5M | AR5K_SET_SHORT_PREAMBLE, |
| 153 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 154 | { .bitrate = 110, |
| 155 | .hw_value = ATH5K_RATE_CODE_11M, |
| 156 | .hw_value_short = ATH5K_RATE_CODE_11M | AR5K_SET_SHORT_PREAMBLE, |
| 157 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 158 | { .bitrate = 60, |
| 159 | .hw_value = ATH5K_RATE_CODE_6M, |
| 160 | .flags = 0 }, |
| 161 | { .bitrate = 90, |
| 162 | .hw_value = ATH5K_RATE_CODE_9M, |
| 163 | .flags = 0 }, |
| 164 | { .bitrate = 120, |
| 165 | .hw_value = ATH5K_RATE_CODE_12M, |
| 166 | .flags = 0 }, |
| 167 | { .bitrate = 180, |
| 168 | .hw_value = ATH5K_RATE_CODE_18M, |
| 169 | .flags = 0 }, |
| 170 | { .bitrate = 240, |
| 171 | .hw_value = ATH5K_RATE_CODE_24M, |
| 172 | .flags = 0 }, |
| 173 | { .bitrate = 360, |
| 174 | .hw_value = ATH5K_RATE_CODE_36M, |
| 175 | .flags = 0 }, |
| 176 | { .bitrate = 480, |
| 177 | .hw_value = ATH5K_RATE_CODE_48M, |
| 178 | .flags = 0 }, |
| 179 | { .bitrate = 540, |
| 180 | .hw_value = ATH5K_RATE_CODE_54M, |
| 181 | .flags = 0 }, |
| 182 | /* XR missing */ |
| 183 | }; |
| 184 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 185 | static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp) |
| 186 | { |
| 187 | u64 tsf = ath5k_hw_get_tsf64(ah); |
| 188 | |
| 189 | if ((tsf & 0x7fff) < rstamp) |
| 190 | tsf -= 0x8000; |
| 191 | |
| 192 | return (tsf & ~0x7fff) | rstamp; |
| 193 | } |
| 194 | |
Felix Fietkau | e5b046d | 2010-12-02 10:27:01 +0100 | [diff] [blame] | 195 | const char * |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 196 | ath5k_chip_name(enum ath5k_srev_type type, u_int16_t val) |
| 197 | { |
| 198 | const char *name = "xxxxx"; |
| 199 | unsigned int i; |
| 200 | |
| 201 | for (i = 0; i < ARRAY_SIZE(srev_names); i++) { |
| 202 | if (srev_names[i].sr_type != type) |
| 203 | continue; |
Nick Kossifidis | 75d0edb | 2008-09-29 01:24:44 +0300 | [diff] [blame] | 204 | |
| 205 | if ((val & 0xf0) == srev_names[i].sr_val) |
| 206 | name = srev_names[i].sr_name; |
| 207 | |
| 208 | if ((val & 0xff) == srev_names[i].sr_val) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 209 | name = srev_names[i].sr_name; |
| 210 | break; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | return name; |
| 215 | } |
Luis R. Rodriguez | e5aa847 | 2009-09-10 16:55:11 -0700 | [diff] [blame] | 216 | static unsigned int ath5k_ioread32(void *hw_priv, u32 reg_offset) |
| 217 | { |
| 218 | struct ath5k_hw *ah = (struct ath5k_hw *) hw_priv; |
| 219 | return ath5k_hw_reg_read(ah, reg_offset); |
| 220 | } |
| 221 | |
| 222 | static void ath5k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) |
| 223 | { |
| 224 | struct ath5k_hw *ah = (struct ath5k_hw *) hw_priv; |
| 225 | ath5k_hw_reg_write(ah, val, reg_offset); |
| 226 | } |
| 227 | |
| 228 | static const struct ath_ops ath5k_common_ops = { |
| 229 | .read = ath5k_ioread32, |
| 230 | .write = ath5k_iowrite32, |
| 231 | }; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 232 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 233 | /***********************\ |
| 234 | * Driver Initialization * |
| 235 | \***********************/ |
| 236 | |
Bob Copeland | f769c36 | 2009-03-30 22:30:31 -0400 | [diff] [blame] | 237 | static int ath5k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) |
| 238 | { |
| 239 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); |
| 240 | struct ath5k_softc *sc = hw->priv; |
Luis R. Rodriguez | db71971 | 2009-09-10 11:20:57 -0700 | [diff] [blame] | 241 | struct ath_regulatory *regulatory = ath5k_hw_regulatory(sc->ah); |
Bob Copeland | f769c36 | 2009-03-30 22:30:31 -0400 | [diff] [blame] | 242 | |
Luis R. Rodriguez | 608b88c | 2009-08-17 18:07:23 -0700 | [diff] [blame] | 243 | return ath_reg_notifier_apply(wiphy, request, regulatory); |
Bob Copeland | f769c36 | 2009-03-30 22:30:31 -0400 | [diff] [blame] | 244 | } |
| 245 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 246 | /********************\ |
| 247 | * Channel/mode setup * |
| 248 | \********************/ |
| 249 | |
| 250 | /* |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 251 | * Returns true for the channel numbers used without all_channels modparam. |
| 252 | */ |
Bruno Randolf | 410e612 | 2011-01-19 18:20:57 +0900 | [diff] [blame] | 253 | static bool ath5k_is_standard_channel(short chan, enum ieee80211_band band) |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 254 | { |
Bruno Randolf | 410e612 | 2011-01-19 18:20:57 +0900 | [diff] [blame] | 255 | if (band == IEEE80211_BAND_2GHZ && chan <= 14) |
| 256 | return true; |
| 257 | |
| 258 | return /* UNII 1,2 */ |
| 259 | (((chan & 3) == 0 && chan >= 36 && chan <= 64) || |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 260 | /* midband */ |
| 261 | ((chan & 3) == 0 && chan >= 100 && chan <= 140) || |
| 262 | /* UNII-3 */ |
Bruno Randolf | 410e612 | 2011-01-19 18:20:57 +0900 | [diff] [blame] | 263 | ((chan & 3) == 1 && chan >= 149 && chan <= 165) || |
| 264 | /* 802.11j 5.030-5.080 GHz (20MHz) */ |
| 265 | (chan == 8 || chan == 12 || chan == 16) || |
| 266 | /* 802.11j 4.9GHz (20MHz) */ |
| 267 | (chan == 184 || chan == 188 || chan == 192 || chan == 196)); |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 268 | } |
| 269 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 270 | static unsigned int |
Bruno Randolf | 97d9c3a | 2011-01-19 18:20:52 +0900 | [diff] [blame] | 271 | ath5k_setup_channels(struct ath5k_hw *ah, struct ieee80211_channel *channels, |
| 272 | unsigned int mode, unsigned int max) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 273 | { |
Bruno Randolf | 2b1351a | 2011-01-21 12:19:52 +0900 | [diff] [blame] | 274 | unsigned int count, size, chfreq, freq, ch; |
Bruno Randolf | 90c02d7 | 2011-01-19 18:20:36 +0900 | [diff] [blame] | 275 | enum ieee80211_band band; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 276 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 277 | switch (mode) { |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 278 | case AR5K_MODE_11A: |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 279 | /* 1..220, but 2GHz frequencies are filtered by check_channel */ |
Bruno Randolf | 97d9c3a | 2011-01-19 18:20:52 +0900 | [diff] [blame] | 280 | size = 220; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 281 | chfreq = CHANNEL_5GHZ; |
Bruno Randolf | 90c02d7 | 2011-01-19 18:20:36 +0900 | [diff] [blame] | 282 | band = IEEE80211_BAND_5GHZ; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 283 | break; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 284 | case AR5K_MODE_11B: |
| 285 | case AR5K_MODE_11G: |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 286 | size = 26; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 287 | chfreq = CHANNEL_2GHZ; |
Bruno Randolf | 90c02d7 | 2011-01-19 18:20:36 +0900 | [diff] [blame] | 288 | band = IEEE80211_BAND_2GHZ; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 289 | break; |
| 290 | default: |
| 291 | ATH5K_WARN(ah->ah_sc, "bad mode, not copying channels\n"); |
| 292 | return 0; |
| 293 | } |
| 294 | |
Bruno Randolf | 2b1351a | 2011-01-21 12:19:52 +0900 | [diff] [blame] | 295 | count = 0; |
| 296 | for (ch = 1; ch <= size && count < max; ch++) { |
Bruno Randolf | 90c02d7 | 2011-01-19 18:20:36 +0900 | [diff] [blame] | 297 | freq = ieee80211_channel_to_frequency(ch, band); |
| 298 | |
| 299 | if (freq == 0) /* mapping failed - not a standard channel */ |
| 300 | continue; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 301 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 302 | /* Check if channel is supported by the chipset */ |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 303 | if (!ath5k_channel_ok(ah, freq, chfreq)) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 304 | continue; |
| 305 | |
Bruno Randolf | 410e612 | 2011-01-19 18:20:57 +0900 | [diff] [blame] | 306 | if (!modparam_all_channels && |
| 307 | !ath5k_is_standard_channel(ch, band)) |
Bob Copeland | 42639fc | 2009-03-30 08:05:29 -0400 | [diff] [blame] | 308 | continue; |
| 309 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 310 | /* Write channel info and increment counter */ |
| 311 | channels[count].center_freq = freq; |
Bruno Randolf | 90c02d7 | 2011-01-19 18:20:36 +0900 | [diff] [blame] | 312 | channels[count].band = band; |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 313 | switch (mode) { |
| 314 | case AR5K_MODE_11A: |
| 315 | case AR5K_MODE_11G: |
| 316 | channels[count].hw_value = chfreq | CHANNEL_OFDM; |
| 317 | break; |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 318 | case AR5K_MODE_11B: |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 319 | channels[count].hw_value = CHANNEL_B; |
| 320 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 321 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 322 | count++; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | return count; |
| 326 | } |
| 327 | |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 328 | static void |
| 329 | ath5k_setup_rate_idx(struct ath5k_softc *sc, struct ieee80211_supported_band *b) |
| 330 | { |
| 331 | u8 i; |
| 332 | |
| 333 | for (i = 0; i < AR5K_MAX_RATES; i++) |
| 334 | sc->rate_idx[b->band][i] = -1; |
| 335 | |
| 336 | for (i = 0; i < b->n_bitrates; i++) { |
| 337 | sc->rate_idx[b->band][b->bitrates[i].hw_value] = i; |
| 338 | if (b->bitrates[i].hw_value_short) |
| 339 | sc->rate_idx[b->band][b->bitrates[i].hw_value_short] = i; |
| 340 | } |
| 341 | } |
| 342 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 343 | static int |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 344 | ath5k_setup_bands(struct ieee80211_hw *hw) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 345 | { |
| 346 | struct ath5k_softc *sc = hw->priv; |
| 347 | struct ath5k_hw *ah = sc->ah; |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 348 | struct ieee80211_supported_band *sband; |
| 349 | int max_c, count_c = 0; |
| 350 | int i; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 351 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 352 | BUILD_BUG_ON(ARRAY_SIZE(sc->sbands) < IEEE80211_NUM_BANDS); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 353 | max_c = ARRAY_SIZE(sc->channels); |
| 354 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 355 | /* 2GHz band */ |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 356 | sband = &sc->sbands[IEEE80211_BAND_2GHZ]; |
| 357 | sband->band = IEEE80211_BAND_2GHZ; |
| 358 | sband->bitrates = &sc->rates[IEEE80211_BAND_2GHZ][0]; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 359 | |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 360 | if (test_bit(AR5K_MODE_11G, sc->ah->ah_capabilities.cap_mode)) { |
| 361 | /* G mode */ |
| 362 | memcpy(sband->bitrates, &ath5k_rates[0], |
| 363 | sizeof(struct ieee80211_rate) * 12); |
| 364 | sband->n_bitrates = 12; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 365 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 366 | sband->channels = sc->channels; |
Bruno Randolf | 0810569 | 2011-01-19 18:20:47 +0900 | [diff] [blame] | 367 | sband->n_channels = ath5k_setup_channels(ah, sband->channels, |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 368 | AR5K_MODE_11G, max_c); |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 369 | |
| 370 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 371 | count_c = sband->n_channels; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 372 | max_c -= count_c; |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 373 | } else if (test_bit(AR5K_MODE_11B, sc->ah->ah_capabilities.cap_mode)) { |
| 374 | /* B mode */ |
| 375 | memcpy(sband->bitrates, &ath5k_rates[0], |
| 376 | sizeof(struct ieee80211_rate) * 4); |
| 377 | sband->n_bitrates = 4; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 378 | |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 379 | /* 5211 only supports B rates and uses 4bit rate codes |
| 380 | * (e.g normally we have 0x1B for 1M, but on 5211 we have 0x0B) |
| 381 | * fix them up here: |
| 382 | */ |
| 383 | if (ah->ah_version == AR5K_AR5211) { |
| 384 | for (i = 0; i < 4; i++) { |
| 385 | sband->bitrates[i].hw_value = |
| 386 | sband->bitrates[i].hw_value & 0xF; |
| 387 | sband->bitrates[i].hw_value_short = |
| 388 | sband->bitrates[i].hw_value_short & 0xF; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | sband->channels = sc->channels; |
Bruno Randolf | 0810569 | 2011-01-19 18:20:47 +0900 | [diff] [blame] | 393 | sband->n_channels = ath5k_setup_channels(ah, sband->channels, |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 394 | AR5K_MODE_11B, max_c); |
| 395 | |
| 396 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; |
| 397 | count_c = sband->n_channels; |
| 398 | max_c -= count_c; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 399 | } |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 400 | ath5k_setup_rate_idx(sc, sband); |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 401 | |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 402 | /* 5GHz band, A mode */ |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 403 | if (test_bit(AR5K_MODE_11A, sc->ah->ah_capabilities.cap_mode)) { |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 404 | sband = &sc->sbands[IEEE80211_BAND_5GHZ]; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 405 | sband->band = IEEE80211_BAND_5GHZ; |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 406 | sband->bitrates = &sc->rates[IEEE80211_BAND_5GHZ][0]; |
| 407 | |
| 408 | memcpy(sband->bitrates, &ath5k_rates[4], |
| 409 | sizeof(struct ieee80211_rate) * 8); |
| 410 | sband->n_bitrates = 8; |
| 411 | |
| 412 | sband->channels = &sc->channels[count_c]; |
Bruno Randolf | 0810569 | 2011-01-19 18:20:47 +0900 | [diff] [blame] | 413 | sband->n_channels = ath5k_setup_channels(ah, sband->channels, |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 414 | AR5K_MODE_11A, max_c); |
| 415 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 416 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband; |
| 417 | } |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 418 | ath5k_setup_rate_idx(sc, sband); |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 419 | |
Luis R. Rodriguez | b446197 | 2008-02-04 10:03:54 -0500 | [diff] [blame] | 420 | ath5k_debug_dump_bands(sc); |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 421 | |
| 422 | return 0; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | /* |
Joerg Albert | e30eb4a | 2009-08-05 01:52:07 +0200 | [diff] [blame] | 426 | * Set/change channels. We always reset the chip. |
| 427 | * To accomplish this we must first cleanup any pending DMA, |
| 428 | * then restart stuff after a la ath5k_init. |
Bob Copeland | be00937 | 2009-01-22 08:44:16 -0500 | [diff] [blame] | 429 | * |
| 430 | * Called with sc->lock. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 431 | */ |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 432 | int |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 433 | ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan) |
| 434 | { |
Bruno Randolf | 8d67a03 | 2010-06-16 19:11:12 +0900 | [diff] [blame] | 435 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 436 | "channel set, resetting (%u -> %u MHz)\n", |
| 437 | sc->curchan->center_freq, chan->center_freq); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 438 | |
Joerg Albert | e30eb4a | 2009-08-05 01:52:07 +0200 | [diff] [blame] | 439 | /* |
| 440 | * To switch channels clear any pending DMA operations; |
| 441 | * wait long enough for the RX fifo to drain, reset the |
| 442 | * hardware at the new frequency, and then re-enable |
| 443 | * the relevant bits of the h/w. |
| 444 | */ |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 445 | return ath5k_reset(sc, chan, true); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 446 | } |
| 447 | |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 448 | void ath5k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 449 | { |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 450 | struct ath5k_vif_iter_data *iter_data = data; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 451 | int i; |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 452 | struct ath5k_vif *avf = (void *)vif->drv_priv; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 453 | |
| 454 | if (iter_data->hw_macaddr) |
| 455 | for (i = 0; i < ETH_ALEN; i++) |
| 456 | iter_data->mask[i] &= |
| 457 | ~(iter_data->hw_macaddr[i] ^ mac[i]); |
| 458 | |
| 459 | if (!iter_data->found_active) { |
| 460 | iter_data->found_active = true; |
| 461 | memcpy(iter_data->active_mac, mac, ETH_ALEN); |
| 462 | } |
| 463 | |
| 464 | if (iter_data->need_set_hw_addr && iter_data->hw_macaddr) |
| 465 | if (compare_ether_addr(iter_data->hw_macaddr, mac) == 0) |
| 466 | iter_data->need_set_hw_addr = false; |
| 467 | |
| 468 | if (!iter_data->any_assoc) { |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 469 | if (avf->assoc) |
| 470 | iter_data->any_assoc = true; |
| 471 | } |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 472 | |
| 473 | /* Calculate combined mode - when APs are active, operate in AP mode. |
| 474 | * Otherwise use the mode of the new interface. This can currently |
| 475 | * only deal with combinations of APs and STAs. Only one ad-hoc |
Ben Greear | 7afbb2f | 2010-11-10 11:43:51 -0800 | [diff] [blame] | 476 | * interfaces is allowed. |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 477 | */ |
| 478 | if (avf->opmode == NL80211_IFTYPE_AP) |
| 479 | iter_data->opmode = NL80211_IFTYPE_AP; |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 480 | else { |
| 481 | if (avf->opmode == NL80211_IFTYPE_STATION) |
| 482 | iter_data->n_stas++; |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 483 | if (iter_data->opmode == NL80211_IFTYPE_UNSPECIFIED) |
| 484 | iter_data->opmode = avf->opmode; |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 485 | } |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 486 | } |
| 487 | |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 488 | void |
| 489 | ath5k_update_bssid_mask_and_opmode(struct ath5k_softc *sc, |
| 490 | struct ieee80211_vif *vif) |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 491 | { |
| 492 | struct ath_common *common = ath5k_hw_common(sc->ah); |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 493 | struct ath5k_vif_iter_data iter_data; |
| 494 | u32 rfilt; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 495 | |
| 496 | /* |
| 497 | * Use the hardware MAC address as reference, the hardware uses it |
| 498 | * together with the BSSID mask when matching addresses. |
| 499 | */ |
| 500 | iter_data.hw_macaddr = common->macaddr; |
| 501 | memset(&iter_data.mask, 0xff, ETH_ALEN); |
| 502 | iter_data.found_active = false; |
| 503 | iter_data.need_set_hw_addr = true; |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 504 | iter_data.opmode = NL80211_IFTYPE_UNSPECIFIED; |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 505 | iter_data.n_stas = 0; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 506 | |
| 507 | if (vif) |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 508 | ath5k_vif_iter(&iter_data, vif->addr, vif); |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 509 | |
| 510 | /* Get list of all active MAC addresses */ |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 511 | ieee80211_iterate_active_interfaces_atomic(sc->hw, ath5k_vif_iter, |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 512 | &iter_data); |
| 513 | memcpy(sc->bssidmask, iter_data.mask, ETH_ALEN); |
| 514 | |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 515 | sc->opmode = iter_data.opmode; |
| 516 | if (sc->opmode == NL80211_IFTYPE_UNSPECIFIED) |
| 517 | /* Nothing active, default to station mode */ |
| 518 | sc->opmode = NL80211_IFTYPE_STATION; |
| 519 | |
Ben Greear | 7afbb2f | 2010-11-10 11:43:51 -0800 | [diff] [blame] | 520 | ath5k_hw_set_opmode(sc->ah, sc->opmode); |
| 521 | ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "mode setup opmode %d (%s)\n", |
| 522 | sc->opmode, ath_opmode_to_string(sc->opmode)); |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 523 | |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 524 | if (iter_data.need_set_hw_addr && iter_data.found_active) |
| 525 | ath5k_hw_set_lladdr(sc->ah, iter_data.active_mac); |
| 526 | |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 527 | if (ath5k_hw_hasbssidmask(sc->ah)) |
| 528 | ath5k_hw_set_bssid_mask(sc->ah, sc->bssidmask); |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 529 | |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 530 | /* Set up RX Filter */ |
| 531 | if (iter_data.n_stas > 1) { |
| 532 | /* If you have multiple STA interfaces connected to |
| 533 | * different APs, ARPs are not received (most of the time?) |
| 534 | * Enabling PROMISC appears to fix that probem. |
| 535 | */ |
| 536 | sc->filter_flags |= AR5K_RX_FILTER_PROM; |
| 537 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 538 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 539 | rfilt = sc->filter_flags; |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 540 | ath5k_hw_set_rx_filter(sc->ah, rfilt); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 541 | ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "RX filter 0x%x\n", rfilt); |
| 542 | } |
| 543 | |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 544 | static inline int |
Bruno Randolf | 63266a6 | 2008-07-30 17:12:58 +0200 | [diff] [blame] | 545 | ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix) |
| 546 | { |
Bob Copeland | b726604 | 2009-03-02 21:55:18 -0500 | [diff] [blame] | 547 | int rix; |
| 548 | |
| 549 | /* return base rate on errors */ |
| 550 | if (WARN(hw_rix < 0 || hw_rix >= AR5K_MAX_RATES, |
| 551 | "hw_rix out of bounds: %x\n", hw_rix)) |
| 552 | return 0; |
| 553 | |
Bruno Randolf | 930a762 | 2011-01-19 18:21:13 +0900 | [diff] [blame] | 554 | rix = sc->rate_idx[sc->curchan->band][hw_rix]; |
Bob Copeland | b726604 | 2009-03-02 21:55:18 -0500 | [diff] [blame] | 555 | if (WARN(rix < 0, "invalid hw_rix: %x\n", hw_rix)) |
| 556 | rix = 0; |
| 557 | |
| 558 | return rix; |
Luis R. Rodriguez | d8ee398 | 2008-02-03 21:51:04 -0500 | [diff] [blame] | 559 | } |
| 560 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 561 | /***************\ |
| 562 | * Buffers setup * |
| 563 | \***************/ |
| 564 | |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 565 | static |
| 566 | struct sk_buff *ath5k_rx_skb_alloc(struct ath5k_softc *sc, dma_addr_t *skb_addr) |
| 567 | { |
Luis R. Rodriguez | db71971 | 2009-09-10 11:20:57 -0700 | [diff] [blame] | 568 | struct ath_common *common = ath5k_hw_common(sc->ah); |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 569 | struct sk_buff *skb; |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 570 | |
| 571 | /* |
| 572 | * Allocate buffer with headroom_needed space for the |
| 573 | * fake physical layer header at the start. |
| 574 | */ |
Luis R. Rodriguez | db71971 | 2009-09-10 11:20:57 -0700 | [diff] [blame] | 575 | skb = ath_rxbuf_alloc(common, |
Luis R. Rodriguez | dd84978 | 2009-11-04 09:44:50 -0800 | [diff] [blame] | 576 | common->rx_bufsize, |
Luis R. Rodriguez | aeb63cf | 2009-08-12 09:57:00 -0700 | [diff] [blame] | 577 | GFP_ATOMIC); |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 578 | |
| 579 | if (!skb) { |
| 580 | ATH5K_ERR(sc, "can't alloc skbuff of size %u\n", |
Luis R. Rodriguez | dd84978 | 2009-11-04 09:44:50 -0800 | [diff] [blame] | 581 | common->rx_bufsize); |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 582 | return NULL; |
| 583 | } |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 584 | |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 585 | *skb_addr = dma_map_single(sc->dev, |
Luis R. Rodriguez | cc861f7 | 2009-11-04 09:11:34 -0800 | [diff] [blame] | 586 | skb->data, common->rx_bufsize, |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 587 | DMA_FROM_DEVICE); |
| 588 | |
| 589 | if (unlikely(dma_mapping_error(sc->dev, *skb_addr))) { |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 590 | ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__); |
| 591 | dev_kfree_skb(skb); |
| 592 | return NULL; |
| 593 | } |
| 594 | return skb; |
| 595 | } |
| 596 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 597 | static int |
| 598 | ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) |
| 599 | { |
| 600 | struct ath5k_hw *ah = sc->ah; |
| 601 | struct sk_buff *skb = bf->skb; |
| 602 | struct ath5k_desc *ds; |
Bruno Randolf | b5eae9f | 2010-05-19 10:18:16 +0900 | [diff] [blame] | 603 | int ret; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 604 | |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 605 | if (!skb) { |
| 606 | skb = ath5k_rx_skb_alloc(sc, &bf->skbaddr); |
| 607 | if (!skb) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 608 | return -ENOMEM; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 609 | bf->skb = skb; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | /* |
| 613 | * Setup descriptors. For receive we always terminate |
| 614 | * the descriptor list with a self-linked entry so we'll |
| 615 | * not get overrun under high load (as can happen with a |
| 616 | * 5212 when ANI processing enables PHY error frames). |
| 617 | * |
Bruno Randolf | beade63 | 2010-06-16 19:11:25 +0900 | [diff] [blame] | 618 | * To ensure the last descriptor is self-linked we create |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 619 | * each descriptor as self-linked and add it to the end. As |
| 620 | * each additional descriptor is added the previous self-linked |
Bruno Randolf | beade63 | 2010-06-16 19:11:25 +0900 | [diff] [blame] | 621 | * entry is "fixed" naturally. This should be safe even |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 622 | * if DMA is happening. When processing RX interrupts we |
| 623 | * never remove/process the last, self-linked, entry on the |
Bruno Randolf | beade63 | 2010-06-16 19:11:25 +0900 | [diff] [blame] | 624 | * descriptor list. This ensures the hardware always has |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 625 | * someplace to write a new frame. |
| 626 | */ |
| 627 | ds = bf->desc; |
| 628 | ds->ds_link = bf->daddr; /* link to self */ |
| 629 | ds->ds_data = bf->skbaddr; |
Bruno Randolf | a666819 | 2010-06-16 19:12:01 +0900 | [diff] [blame] | 630 | ret = ath5k_hw_setup_rx_desc(ah, ds, ah->common.rx_bufsize, 0); |
Bruno Randolf | 0452d4a | 2010-06-16 19:11:35 +0900 | [diff] [blame] | 631 | if (ret) { |
| 632 | ATH5K_ERR(sc, "%s: could not setup RX desc\n", __func__); |
Bruno Randolf | b5eae9f | 2010-05-19 10:18:16 +0900 | [diff] [blame] | 633 | return ret; |
Bruno Randolf | 0452d4a | 2010-06-16 19:11:35 +0900 | [diff] [blame] | 634 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 635 | |
| 636 | if (sc->rxlink != NULL) |
| 637 | *sc->rxlink = bf->daddr; |
| 638 | sc->rxlink = &ds->ds_link; |
| 639 | return 0; |
| 640 | } |
| 641 | |
Bob Copeland | 2ac2927 | 2010-02-09 13:06:54 -0500 | [diff] [blame] | 642 | static enum ath5k_pkt_type get_hw_packet_type(struct sk_buff *skb) |
| 643 | { |
| 644 | struct ieee80211_hdr *hdr; |
| 645 | enum ath5k_pkt_type htype; |
| 646 | __le16 fc; |
| 647 | |
| 648 | hdr = (struct ieee80211_hdr *)skb->data; |
| 649 | fc = hdr->frame_control; |
| 650 | |
| 651 | if (ieee80211_is_beacon(fc)) |
| 652 | htype = AR5K_PKT_TYPE_BEACON; |
| 653 | else if (ieee80211_is_probe_resp(fc)) |
| 654 | htype = AR5K_PKT_TYPE_PROBE_RESP; |
| 655 | else if (ieee80211_is_atim(fc)) |
| 656 | htype = AR5K_PKT_TYPE_ATIM; |
| 657 | else if (ieee80211_is_pspoll(fc)) |
| 658 | htype = AR5K_PKT_TYPE_PSPOLL; |
| 659 | else |
| 660 | htype = AR5K_PKT_TYPE_NORMAL; |
| 661 | |
| 662 | return htype; |
| 663 | } |
| 664 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 665 | static int |
Bob Copeland | cec8db2 | 2009-07-04 12:59:51 -0400 | [diff] [blame] | 666 | ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 667 | struct ath5k_txq *txq, int padsize) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 668 | { |
| 669 | struct ath5k_hw *ah = sc->ah; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 670 | struct ath5k_desc *ds = bf->desc; |
| 671 | struct sk_buff *skb = bf->skb; |
Johannes Berg | a888d52 | 2008-05-26 16:43:39 +0200 | [diff] [blame] | 672 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 673 | unsigned int pktlen, flags, keyidx = AR5K_TXKEYIX_INVALID; |
Felix Fietkau | 2f7fe87 | 2008-10-05 18:05:48 +0200 | [diff] [blame] | 674 | struct ieee80211_rate *rate; |
| 675 | unsigned int mrr_rate[3], mrr_tries[3]; |
| 676 | int i, ret; |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 677 | u16 hw_rate; |
Bob Copeland | 07c1e85 | 2009-01-22 08:44:21 -0500 | [diff] [blame] | 678 | u16 cts_rate = 0; |
| 679 | u16 duration = 0; |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 680 | u8 rc_flags; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 681 | |
| 682 | flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 683 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 684 | /* XXX endianness */ |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 685 | bf->skbaddr = dma_map_single(sc->dev, skb->data, skb->len, |
| 686 | DMA_TO_DEVICE); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 687 | |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 688 | rate = ieee80211_get_tx_rate(sc->hw, info); |
John W. Linville | d8e1ba7 | 2010-08-24 15:27:34 -0400 | [diff] [blame] | 689 | if (!rate) { |
| 690 | ret = -EINVAL; |
| 691 | goto err_unmap; |
| 692 | } |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 693 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 694 | if (info->flags & IEEE80211_TX_CTL_NO_ACK) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 695 | flags |= AR5K_TXDESC_NOACK; |
| 696 | |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 697 | rc_flags = info->control.rates[0].flags; |
| 698 | hw_rate = (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) ? |
| 699 | rate->hw_value_short : rate->hw_value; |
| 700 | |
Bruno Randolf | 281c56d | 2008-02-05 18:44:55 +0900 | [diff] [blame] | 701 | pktlen = skb->len; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 702 | |
Nick Kossifidis | 8f655dd | 2009-03-15 22:20:35 +0200 | [diff] [blame] | 703 | /* FIXME: If we are in g mode and rate is a CCK rate |
| 704 | * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta |
| 705 | * from tx power (value is in dB units already) */ |
Bob Copeland | 362695e | 2009-02-15 12:06:12 -0500 | [diff] [blame] | 706 | if (info->control.hw_key) { |
| 707 | keyidx = info->control.hw_key->hw_key_idx; |
| 708 | pktlen += info->control.hw_key->icv_len; |
| 709 | } |
Bob Copeland | 07c1e85 | 2009-01-22 08:44:21 -0500 | [diff] [blame] | 710 | if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
| 711 | flags |= AR5K_TXDESC_RTSENA; |
| 712 | cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value; |
| 713 | duration = le16_to_cpu(ieee80211_rts_duration(sc->hw, |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 714 | info->control.vif, pktlen, info)); |
Bob Copeland | 07c1e85 | 2009-01-22 08:44:21 -0500 | [diff] [blame] | 715 | } |
| 716 | if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| 717 | flags |= AR5K_TXDESC_CTSENA; |
| 718 | cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value; |
| 719 | duration = le16_to_cpu(ieee80211_ctstoself_duration(sc->hw, |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 720 | info->control.vif, pktlen, info)); |
Bob Copeland | 07c1e85 | 2009-01-22 08:44:21 -0500 | [diff] [blame] | 721 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 722 | ret = ah->ah_setup_tx_desc(ah, ds, pktlen, |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 723 | ieee80211_get_hdrlen_from_skb(skb), padsize, |
Bob Copeland | 2ac2927 | 2010-02-09 13:06:54 -0500 | [diff] [blame] | 724 | get_hw_packet_type(skb), |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 725 | (sc->power_level * 2), |
Bob Copeland | 8902ff4 | 2009-01-22 08:44:20 -0500 | [diff] [blame] | 726 | hw_rate, |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 727 | info->control.rates[0].count, keyidx, ah->ah_tx_ant, flags, |
Bob Copeland | 07c1e85 | 2009-01-22 08:44:21 -0500 | [diff] [blame] | 728 | cts_rate, duration); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 729 | if (ret) |
| 730 | goto err_unmap; |
| 731 | |
Felix Fietkau | 2f7fe87 | 2008-10-05 18:05:48 +0200 | [diff] [blame] | 732 | memset(mrr_rate, 0, sizeof(mrr_rate)); |
| 733 | memset(mrr_tries, 0, sizeof(mrr_tries)); |
| 734 | for (i = 0; i < 3; i++) { |
| 735 | rate = ieee80211_get_alt_retry_rate(sc->hw, info, i); |
| 736 | if (!rate) |
| 737 | break; |
| 738 | |
| 739 | mrr_rate[i] = rate->hw_value; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 740 | mrr_tries[i] = info->control.rates[i + 1].count; |
Felix Fietkau | 2f7fe87 | 2008-10-05 18:05:48 +0200 | [diff] [blame] | 741 | } |
| 742 | |
Bruno Randolf | a666819 | 2010-06-16 19:12:01 +0900 | [diff] [blame] | 743 | ath5k_hw_setup_mrr_tx_desc(ah, ds, |
Felix Fietkau | 2f7fe87 | 2008-10-05 18:05:48 +0200 | [diff] [blame] | 744 | mrr_rate[0], mrr_tries[0], |
| 745 | mrr_rate[1], mrr_tries[1], |
| 746 | mrr_rate[2], mrr_tries[2]); |
| 747 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 748 | ds->ds_link = 0; |
| 749 | ds->ds_data = bf->skbaddr; |
| 750 | |
| 751 | spin_lock_bh(&txq->lock); |
| 752 | list_add_tail(&bf->list, &txq->q); |
Bruno Randolf | 925e0b0 | 2010-09-17 11:36:35 +0900 | [diff] [blame] | 753 | txq->txq_len++; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 754 | if (txq->link == NULL) /* is this first packet? */ |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 755 | ath5k_hw_set_txdp(ah, txq->qnum, bf->daddr); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 756 | else /* no, so only link it */ |
| 757 | *txq->link = bf->daddr; |
| 758 | |
| 759 | txq->link = &ds->ds_link; |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 760 | ath5k_hw_start_tx_dma(ah, txq->qnum); |
Jiri Slaby | 274c7c3 | 2008-07-15 17:44:20 +0200 | [diff] [blame] | 761 | mmiowb(); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 762 | spin_unlock_bh(&txq->lock); |
| 763 | |
| 764 | return 0; |
| 765 | err_unmap: |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 766 | dma_unmap_single(sc->dev, bf->skbaddr, skb->len, DMA_TO_DEVICE); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 767 | return ret; |
| 768 | } |
| 769 | |
| 770 | /*******************\ |
| 771 | * Descriptors setup * |
| 772 | \*******************/ |
| 773 | |
| 774 | static int |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 775 | ath5k_desc_alloc(struct ath5k_softc *sc) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 776 | { |
| 777 | struct ath5k_desc *ds; |
| 778 | struct ath5k_buf *bf; |
| 779 | dma_addr_t da; |
| 780 | unsigned int i; |
| 781 | int ret; |
| 782 | |
| 783 | /* allocate descriptors */ |
| 784 | sc->desc_len = sizeof(struct ath5k_desc) * |
| 785 | (ATH_TXBUF + ATH_RXBUF + ATH_BCBUF + 1); |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 786 | |
| 787 | sc->desc = dma_alloc_coherent(sc->dev, sc->desc_len, |
| 788 | &sc->desc_daddr, GFP_KERNEL); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 789 | if (sc->desc == NULL) { |
| 790 | ATH5K_ERR(sc, "can't allocate descriptors\n"); |
| 791 | ret = -ENOMEM; |
| 792 | goto err; |
| 793 | } |
| 794 | ds = sc->desc; |
| 795 | da = sc->desc_daddr; |
| 796 | ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "DMA map: %p (%zu) -> %llx\n", |
| 797 | ds, sc->desc_len, (unsigned long long)sc->desc_daddr); |
| 798 | |
| 799 | bf = kcalloc(1 + ATH_TXBUF + ATH_RXBUF + ATH_BCBUF, |
| 800 | sizeof(struct ath5k_buf), GFP_KERNEL); |
| 801 | if (bf == NULL) { |
| 802 | ATH5K_ERR(sc, "can't allocate bufptr\n"); |
| 803 | ret = -ENOMEM; |
| 804 | goto err_free; |
| 805 | } |
| 806 | sc->bufptr = bf; |
| 807 | |
| 808 | INIT_LIST_HEAD(&sc->rxbuf); |
| 809 | for (i = 0; i < ATH_RXBUF; i++, bf++, ds++, da += sizeof(*ds)) { |
| 810 | bf->desc = ds; |
| 811 | bf->daddr = da; |
| 812 | list_add_tail(&bf->list, &sc->rxbuf); |
| 813 | } |
| 814 | |
| 815 | INIT_LIST_HEAD(&sc->txbuf); |
| 816 | sc->txbuf_len = ATH_TXBUF; |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 817 | for (i = 0; i < ATH_TXBUF; i++, bf++, ds++, da += sizeof(*ds)) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 818 | bf->desc = ds; |
| 819 | bf->daddr = da; |
| 820 | list_add_tail(&bf->list, &sc->txbuf); |
| 821 | } |
| 822 | |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 823 | /* beacon buffers */ |
| 824 | INIT_LIST_HEAD(&sc->bcbuf); |
| 825 | for (i = 0; i < ATH_BCBUF; i++, bf++, ds++, da += sizeof(*ds)) { |
| 826 | bf->desc = ds; |
| 827 | bf->daddr = da; |
| 828 | list_add_tail(&bf->list, &sc->bcbuf); |
| 829 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 830 | |
| 831 | return 0; |
| 832 | err_free: |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 833 | dma_free_coherent(sc->dev, sc->desc_len, sc->desc, sc->desc_daddr); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 834 | err: |
| 835 | sc->desc = NULL; |
| 836 | return ret; |
| 837 | } |
| 838 | |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 839 | void |
| 840 | ath5k_txbuf_free_skb(struct ath5k_softc *sc, struct ath5k_buf *bf) |
| 841 | { |
| 842 | BUG_ON(!bf); |
| 843 | if (!bf->skb) |
| 844 | return; |
| 845 | dma_unmap_single(sc->dev, bf->skbaddr, bf->skb->len, |
| 846 | DMA_TO_DEVICE); |
| 847 | dev_kfree_skb_any(bf->skb); |
| 848 | bf->skb = NULL; |
| 849 | bf->skbaddr = 0; |
| 850 | bf->desc->ds_data = 0; |
| 851 | } |
| 852 | |
| 853 | void |
| 854 | ath5k_rxbuf_free_skb(struct ath5k_softc *sc, struct ath5k_buf *bf) |
| 855 | { |
| 856 | struct ath5k_hw *ah = sc->ah; |
| 857 | struct ath_common *common = ath5k_hw_common(ah); |
| 858 | |
| 859 | BUG_ON(!bf); |
| 860 | if (!bf->skb) |
| 861 | return; |
| 862 | dma_unmap_single(sc->dev, bf->skbaddr, common->rx_bufsize, |
| 863 | DMA_FROM_DEVICE); |
| 864 | dev_kfree_skb_any(bf->skb); |
| 865 | bf->skb = NULL; |
| 866 | bf->skbaddr = 0; |
| 867 | bf->desc->ds_data = 0; |
| 868 | } |
| 869 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 870 | static void |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 871 | ath5k_desc_free(struct ath5k_softc *sc) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 872 | { |
| 873 | struct ath5k_buf *bf; |
| 874 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 875 | list_for_each_entry(bf, &sc->txbuf, list) |
Bruno Randolf | 9e4e43f | 2010-06-16 19:11:17 +0900 | [diff] [blame] | 876 | ath5k_txbuf_free_skb(sc, bf); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 877 | list_for_each_entry(bf, &sc->rxbuf, list) |
Bruno Randolf | 9e4e43f | 2010-06-16 19:11:17 +0900 | [diff] [blame] | 878 | ath5k_rxbuf_free_skb(sc, bf); |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 879 | list_for_each_entry(bf, &sc->bcbuf, list) |
| 880 | ath5k_txbuf_free_skb(sc, bf); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 881 | |
| 882 | /* Free memory associated with all descriptors */ |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 883 | dma_free_coherent(sc->dev, sc->desc_len, sc->desc, sc->desc_daddr); |
Bruno Randolf | 39d63f2 | 2010-06-16 19:11:41 +0900 | [diff] [blame] | 884 | sc->desc = NULL; |
| 885 | sc->desc_daddr = 0; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 886 | |
| 887 | kfree(sc->bufptr); |
| 888 | sc->bufptr = NULL; |
| 889 | } |
| 890 | |
| 891 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 892 | /**************\ |
| 893 | * Queues setup * |
| 894 | \**************/ |
| 895 | |
| 896 | static struct ath5k_txq * |
| 897 | ath5k_txq_setup(struct ath5k_softc *sc, |
| 898 | int qtype, int subtype) |
| 899 | { |
| 900 | struct ath5k_hw *ah = sc->ah; |
| 901 | struct ath5k_txq *txq; |
| 902 | struct ath5k_txq_info qi = { |
| 903 | .tqi_subtype = subtype, |
Bruno Randolf | de8af45 | 2010-09-17 11:37:12 +0900 | [diff] [blame] | 904 | /* XXX: default values not correct for B and XR channels, |
| 905 | * but who cares? */ |
| 906 | .tqi_aifs = AR5K_TUNE_AIFS, |
| 907 | .tqi_cw_min = AR5K_TUNE_CWMIN, |
| 908 | .tqi_cw_max = AR5K_TUNE_CWMAX |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 909 | }; |
| 910 | int qnum; |
| 911 | |
| 912 | /* |
| 913 | * Enable interrupts only for EOL and DESC conditions. |
| 914 | * We mark tx descriptors to receive a DESC interrupt |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 915 | * when a tx queue gets deep; otherwise we wait for the |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 916 | * EOL to reap descriptors. Note that this is done to |
| 917 | * reduce interrupt load and this only defers reaping |
| 918 | * descriptors, never transmitting frames. Aside from |
| 919 | * reducing interrupts this also permits more concurrency. |
| 920 | * The only potential downside is if the tx queue backs |
| 921 | * up in which case the top half of the kernel may backup |
| 922 | * due to a lack of tx descriptors. |
| 923 | */ |
| 924 | qi.tqi_flags = AR5K_TXQ_FLAG_TXEOLINT_ENABLE | |
| 925 | AR5K_TXQ_FLAG_TXDESCINT_ENABLE; |
| 926 | qnum = ath5k_hw_setup_tx_queue(ah, qtype, &qi); |
| 927 | if (qnum < 0) { |
| 928 | /* |
| 929 | * NB: don't print a message, this happens |
| 930 | * normally on parts with too few tx queues |
| 931 | */ |
| 932 | return ERR_PTR(qnum); |
| 933 | } |
| 934 | if (qnum >= ARRAY_SIZE(sc->txqs)) { |
| 935 | ATH5K_ERR(sc, "hw qnum %u out of range, max %tu!\n", |
| 936 | qnum, ARRAY_SIZE(sc->txqs)); |
| 937 | ath5k_hw_release_tx_queue(ah, qnum); |
| 938 | return ERR_PTR(-EINVAL); |
| 939 | } |
| 940 | txq = &sc->txqs[qnum]; |
| 941 | if (!txq->setup) { |
| 942 | txq->qnum = qnum; |
| 943 | txq->link = NULL; |
| 944 | INIT_LIST_HEAD(&txq->q); |
| 945 | spin_lock_init(&txq->lock); |
| 946 | txq->setup = true; |
Bruno Randolf | 925e0b0 | 2010-09-17 11:36:35 +0900 | [diff] [blame] | 947 | txq->txq_len = 0; |
John W. Linville | 81266ba | 2011-03-07 16:32:59 -0500 | [diff] [blame] | 948 | txq->txq_max = ATH5K_TXQ_LEN_MAX; |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 949 | txq->txq_poll_mark = false; |
Bruno Randolf | 923e5b3 | 2010-09-17 11:37:02 +0900 | [diff] [blame] | 950 | txq->txq_stuck = 0; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 951 | } |
| 952 | return &sc->txqs[qnum]; |
| 953 | } |
| 954 | |
| 955 | static int |
| 956 | ath5k_beaconq_setup(struct ath5k_hw *ah) |
| 957 | { |
| 958 | struct ath5k_txq_info qi = { |
Bruno Randolf | de8af45 | 2010-09-17 11:37:12 +0900 | [diff] [blame] | 959 | /* XXX: default values not correct for B and XR channels, |
| 960 | * but who cares? */ |
| 961 | .tqi_aifs = AR5K_TUNE_AIFS, |
| 962 | .tqi_cw_min = AR5K_TUNE_CWMIN, |
| 963 | .tqi_cw_max = AR5K_TUNE_CWMAX, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 964 | /* NB: for dynamic turbo, don't enable any other interrupts */ |
| 965 | .tqi_flags = AR5K_TXQ_FLAG_TXDESCINT_ENABLE |
| 966 | }; |
| 967 | |
| 968 | return ath5k_hw_setup_tx_queue(ah, AR5K_TX_QUEUE_BEACON, &qi); |
| 969 | } |
| 970 | |
| 971 | static int |
| 972 | ath5k_beaconq_config(struct ath5k_softc *sc) |
| 973 | { |
| 974 | struct ath5k_hw *ah = sc->ah; |
| 975 | struct ath5k_txq_info qi; |
| 976 | int ret; |
| 977 | |
| 978 | ret = ath5k_hw_get_tx_queueprops(ah, sc->bhalq, &qi); |
| 979 | if (ret) |
Bob Copeland | a951ae2 | 2010-01-20 23:51:04 -0500 | [diff] [blame] | 980 | goto err; |
| 981 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 982 | if (sc->opmode == NL80211_IFTYPE_AP || |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 983 | sc->opmode == NL80211_IFTYPE_MESH_POINT) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 984 | /* |
| 985 | * Always burst out beacon and CAB traffic |
| 986 | * (aifs = cwmin = cwmax = 0) |
| 987 | */ |
| 988 | qi.tqi_aifs = 0; |
| 989 | qi.tqi_cw_min = 0; |
| 990 | qi.tqi_cw_max = 0; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 991 | } else if (sc->opmode == NL80211_IFTYPE_ADHOC) { |
Bruno Randolf | 6d91e1d | 2008-01-19 18:18:41 +0900 | [diff] [blame] | 992 | /* |
| 993 | * Adhoc mode; backoff between 0 and (2 * cw_min). |
| 994 | */ |
| 995 | qi.tqi_aifs = 0; |
| 996 | qi.tqi_cw_min = 0; |
Bruno Randolf | de8af45 | 2010-09-17 11:37:12 +0900 | [diff] [blame] | 997 | qi.tqi_cw_max = 2 * AR5K_TUNE_CWMIN; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 998 | } |
| 999 | |
Bruno Randolf | 6d91e1d | 2008-01-19 18:18:41 +0900 | [diff] [blame] | 1000 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
| 1001 | "beacon queueprops tqi_aifs:%d tqi_cw_min:%d tqi_cw_max:%d\n", |
| 1002 | qi.tqi_aifs, qi.tqi_cw_min, qi.tqi_cw_max); |
| 1003 | |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 1004 | ret = ath5k_hw_set_tx_queueprops(ah, sc->bhalq, &qi); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1005 | if (ret) { |
| 1006 | ATH5K_ERR(sc, "%s: unable to update parameters for beacon " |
| 1007 | "hardware queue!\n", __func__); |
Bob Copeland | a951ae2 | 2010-01-20 23:51:04 -0500 | [diff] [blame] | 1008 | goto err; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1009 | } |
Bob Copeland | a951ae2 | 2010-01-20 23:51:04 -0500 | [diff] [blame] | 1010 | ret = ath5k_hw_reset_tx_queue(ah, sc->bhalq); /* push to h/w */ |
| 1011 | if (ret) |
| 1012 | goto err; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1013 | |
Bob Copeland | a951ae2 | 2010-01-20 23:51:04 -0500 | [diff] [blame] | 1014 | /* reconfigure cabq with ready time to 80% of beacon_interval */ |
| 1015 | ret = ath5k_hw_get_tx_queueprops(ah, AR5K_TX_QUEUE_ID_CAB, &qi); |
| 1016 | if (ret) |
| 1017 | goto err; |
| 1018 | |
| 1019 | qi.tqi_ready_time = (sc->bintval * 80) / 100; |
| 1020 | ret = ath5k_hw_set_tx_queueprops(ah, AR5K_TX_QUEUE_ID_CAB, &qi); |
| 1021 | if (ret) |
| 1022 | goto err; |
| 1023 | |
| 1024 | ret = ath5k_hw_reset_tx_queue(ah, AR5K_TX_QUEUE_ID_CAB); |
| 1025 | err: |
| 1026 | return ret; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1027 | } |
| 1028 | |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1029 | /** |
| 1030 | * ath5k_drain_tx_buffs - Empty tx buffers |
| 1031 | * |
| 1032 | * @sc The &struct ath5k_softc |
| 1033 | * |
| 1034 | * Empty tx buffers from all queues in preparation |
| 1035 | * of a reset or during shutdown. |
| 1036 | * |
| 1037 | * NB: this assumes output has been stopped and |
| 1038 | * we do not need to block ath5k_tx_tasklet |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1039 | */ |
| 1040 | static void |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1041 | ath5k_drain_tx_buffs(struct ath5k_softc *sc) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1042 | { |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1043 | struct ath5k_txq *txq; |
| 1044 | struct ath5k_buf *bf, *bf0; |
| 1045 | int i; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1046 | |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1047 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) { |
| 1048 | if (sc->txqs[i].setup) { |
| 1049 | txq = &sc->txqs[i]; |
| 1050 | spin_lock_bh(&txq->lock); |
| 1051 | list_for_each_entry_safe(bf, bf0, &txq->q, list) { |
| 1052 | ath5k_debug_printtxbuf(sc, bf); |
| 1053 | |
| 1054 | ath5k_txbuf_free_skb(sc, bf); |
| 1055 | |
| 1056 | spin_lock_bh(&sc->txbuflock); |
| 1057 | list_move_tail(&bf->list, &sc->txbuf); |
| 1058 | sc->txbuf_len++; |
| 1059 | txq->txq_len--; |
| 1060 | spin_unlock_bh(&sc->txbuflock); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1061 | } |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1062 | txq->link = NULL; |
| 1063 | txq->txq_poll_mark = false; |
| 1064 | spin_unlock_bh(&txq->lock); |
| 1065 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1066 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1067 | } |
| 1068 | |
| 1069 | static void |
| 1070 | ath5k_txq_release(struct ath5k_softc *sc) |
| 1071 | { |
| 1072 | struct ath5k_txq *txq = sc->txqs; |
| 1073 | unsigned int i; |
| 1074 | |
| 1075 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++, txq++) |
| 1076 | if (txq->setup) { |
| 1077 | ath5k_hw_release_tx_queue(sc->ah, txq->qnum); |
| 1078 | txq->setup = false; |
| 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1083 | /*************\ |
| 1084 | * RX Handling * |
| 1085 | \*************/ |
| 1086 | |
| 1087 | /* |
| 1088 | * Enable the receive h/w following a reset. |
| 1089 | */ |
| 1090 | static int |
| 1091 | ath5k_rx_start(struct ath5k_softc *sc) |
| 1092 | { |
| 1093 | struct ath5k_hw *ah = sc->ah; |
Luis R. Rodriguez | db71971 | 2009-09-10 11:20:57 -0700 | [diff] [blame] | 1094 | struct ath_common *common = ath5k_hw_common(ah); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1095 | struct ath5k_buf *bf; |
| 1096 | int ret; |
| 1097 | |
Nick Kossifidis | b612798 | 2010-08-15 13:03:11 -0400 | [diff] [blame] | 1098 | common->rx_bufsize = roundup(IEEE80211_MAX_FRAME_LEN, common->cachelsz); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1099 | |
Luis R. Rodriguez | cc861f7 | 2009-11-04 09:11:34 -0800 | [diff] [blame] | 1100 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "cachelsz %u rx_bufsize %u\n", |
| 1101 | common->cachelsz, common->rx_bufsize); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1102 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1103 | spin_lock_bh(&sc->rxbuflock); |
Bob Copeland | 2692504 | 2009-04-15 07:57:36 -0400 | [diff] [blame] | 1104 | sc->rxlink = NULL; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1105 | list_for_each_entry(bf, &sc->rxbuf, list) { |
| 1106 | ret = ath5k_rxbuf_setup(sc, bf); |
| 1107 | if (ret != 0) { |
| 1108 | spin_unlock_bh(&sc->rxbuflock); |
| 1109 | goto err; |
| 1110 | } |
| 1111 | } |
| 1112 | bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list); |
Bob Copeland | 2692504 | 2009-04-15 07:57:36 -0400 | [diff] [blame] | 1113 | ath5k_hw_set_rxdp(ah, bf->daddr); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1114 | spin_unlock_bh(&sc->rxbuflock); |
| 1115 | |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 1116 | ath5k_hw_start_rx_dma(ah); /* enable recv descriptors */ |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 1117 | ath5k_update_bssid_mask_and_opmode(sc, NULL); /* set filters, etc. */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1118 | ath5k_hw_start_rx_pcu(ah); /* re-enable PCU/DMA engine */ |
| 1119 | |
| 1120 | return 0; |
| 1121 | err: |
| 1122 | return ret; |
| 1123 | } |
| 1124 | |
| 1125 | /* |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1126 | * Disable the receive logic on PCU (DRU) |
| 1127 | * In preparation for a shutdown. |
| 1128 | * |
| 1129 | * Note: Doesn't stop rx DMA, ath5k_hw_dma_stop |
| 1130 | * does. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1131 | */ |
| 1132 | static void |
| 1133 | ath5k_rx_stop(struct ath5k_softc *sc) |
| 1134 | { |
| 1135 | struct ath5k_hw *ah = sc->ah; |
| 1136 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1137 | ath5k_hw_set_rx_filter(ah, 0); /* clear recv filter */ |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 1138 | ath5k_hw_stop_rx_pcu(ah); /* disable PCU */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1139 | |
| 1140 | ath5k_debug_printrxbuffs(sc, ah); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | static unsigned int |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1144 | ath5k_rx_decrypted(struct ath5k_softc *sc, struct sk_buff *skb, |
| 1145 | struct ath5k_rx_status *rs) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1146 | { |
Luis R. Rodriguez | dc1e001 | 2009-11-04 17:47:31 -0800 | [diff] [blame] | 1147 | struct ath5k_hw *ah = sc->ah; |
| 1148 | struct ath_common *common = ath5k_hw_common(ah); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1149 | struct ieee80211_hdr *hdr = (void *)skb->data; |
Harvey Harrison | 798ee98 | 2008-07-15 18:44:02 -0700 | [diff] [blame] | 1150 | unsigned int keyix, hlen; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1151 | |
Bruno Randolf | b47f407 | 2008-03-05 18:35:45 +0900 | [diff] [blame] | 1152 | if (!(rs->rs_status & AR5K_RXERR_DECRYPT) && |
| 1153 | rs->rs_keyix != AR5K_RXKEYIX_INVALID) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1154 | return RX_FLAG_DECRYPTED; |
| 1155 | |
| 1156 | /* Apparently when a default key is used to decrypt the packet |
| 1157 | the hw does not set the index used to decrypt. In such cases |
| 1158 | get the index from the packet. */ |
Harvey Harrison | 798ee98 | 2008-07-15 18:44:02 -0700 | [diff] [blame] | 1159 | hlen = ieee80211_hdrlen(hdr->frame_control); |
Harvey Harrison | 24b56e7 | 2008-06-14 23:33:38 -0700 | [diff] [blame] | 1160 | if (ieee80211_has_protected(hdr->frame_control) && |
| 1161 | !(rs->rs_status & AR5K_RXERR_DECRYPT) && |
| 1162 | skb->len >= hlen + 4) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1163 | keyix = skb->data[hlen + 3] >> 6; |
| 1164 | |
Luis R. Rodriguez | dc1e001 | 2009-11-04 17:47:31 -0800 | [diff] [blame] | 1165 | if (test_bit(keyix, common->keymap)) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1166 | return RX_FLAG_DECRYPTED; |
| 1167 | } |
| 1168 | |
| 1169 | return 0; |
| 1170 | } |
| 1171 | |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1172 | |
| 1173 | static void |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1174 | ath5k_check_ibss_tsf(struct ath5k_softc *sc, struct sk_buff *skb, |
| 1175 | struct ieee80211_rx_status *rxs) |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1176 | { |
Luis R. Rodriguez | 954fece | 2009-09-10 10:51:33 -0700 | [diff] [blame] | 1177 | struct ath_common *common = ath5k_hw_common(sc->ah); |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1178 | u64 tsf, bc_tstamp; |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1179 | u32 hw_tu; |
| 1180 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; |
| 1181 | |
Harvey Harrison | 24b56e7 | 2008-06-14 23:33:38 -0700 | [diff] [blame] | 1182 | if (ieee80211_is_beacon(mgmt->frame_control) && |
Pavel Roskin | 38c07b4 | 2008-02-26 17:59:14 -0500 | [diff] [blame] | 1183 | le16_to_cpu(mgmt->u.beacon.capab_info) & WLAN_CAPABILITY_IBSS && |
Luis R. Rodriguez | 954fece | 2009-09-10 10:51:33 -0700 | [diff] [blame] | 1184 | memcmp(mgmt->bssid, common->curbssid, ETH_ALEN) == 0) { |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1185 | /* |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1186 | * Received an IBSS beacon with the same BSSID. Hardware *must* |
| 1187 | * have updated the local TSF. We have to work around various |
| 1188 | * hardware bugs, though... |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1189 | */ |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1190 | tsf = ath5k_hw_get_tsf64(sc->ah); |
| 1191 | bc_tstamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
| 1192 | hw_tu = TSF_TO_TU(tsf); |
| 1193 | |
| 1194 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 1195 | "beacon %llx mactime %llx (diff %lld) tsf now %llx\n", |
John W. Linville | 06501d2 | 2008-04-01 17:38:47 -0400 | [diff] [blame] | 1196 | (unsigned long long)bc_tstamp, |
| 1197 | (unsigned long long)rxs->mactime, |
| 1198 | (unsigned long long)(rxs->mactime - bc_tstamp), |
| 1199 | (unsigned long long)tsf); |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1200 | |
| 1201 | /* |
| 1202 | * Sometimes the HW will give us a wrong tstamp in the rx |
| 1203 | * status, causing the timestamp extension to go wrong. |
| 1204 | * (This seems to happen especially with beacon frames bigger |
| 1205 | * than 78 byte (incl. FCS)) |
| 1206 | * But we know that the receive timestamp must be later than the |
| 1207 | * timestamp of the beacon since HW must have synced to that. |
| 1208 | * |
| 1209 | * NOTE: here we assume mactime to be after the frame was |
| 1210 | * received, not like mac80211 which defines it at the start. |
| 1211 | */ |
| 1212 | if (bc_tstamp > rxs->mactime) { |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1213 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1214 | "fixing mactime from %llx to %llx\n", |
John W. Linville | 06501d2 | 2008-04-01 17:38:47 -0400 | [diff] [blame] | 1215 | (unsigned long long)rxs->mactime, |
| 1216 | (unsigned long long)tsf); |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1217 | rxs->mactime = tsf; |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1218 | } |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1219 | |
| 1220 | /* |
| 1221 | * Local TSF might have moved higher than our beacon timers, |
| 1222 | * in that case we have to update them to continue sending |
| 1223 | * beacons. This also takes care of synchronizing beacon sending |
| 1224 | * times with other stations. |
| 1225 | */ |
| 1226 | if (hw_tu >= sc->nexttbtt) |
| 1227 | ath5k_beacon_update_timers(sc, bc_tstamp); |
Bruno Randolf | 7f89612 | 2010-09-27 12:22:21 +0900 | [diff] [blame] | 1228 | |
| 1229 | /* Check if the beacon timers are still correct, because a TSF |
| 1230 | * update might have created a window between them - for a |
| 1231 | * longer description see the comment of this function: */ |
| 1232 | if (!ath5k_hw_check_beacon_timers(sc->ah, sc->bintval)) { |
| 1233 | ath5k_beacon_update_timers(sc, bc_tstamp); |
| 1234 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 1235 | "fixed beacon timers after beacon receive\n"); |
| 1236 | } |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 1237 | } |
| 1238 | } |
| 1239 | |
Bruno Randolf | b4ea449 | 2010-03-25 14:49:25 +0900 | [diff] [blame] | 1240 | static void |
| 1241 | ath5k_update_beacon_rssi(struct ath5k_softc *sc, struct sk_buff *skb, int rssi) |
| 1242 | { |
| 1243 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; |
| 1244 | struct ath5k_hw *ah = sc->ah; |
| 1245 | struct ath_common *common = ath5k_hw_common(ah); |
| 1246 | |
| 1247 | /* only beacons from our BSSID */ |
| 1248 | if (!ieee80211_is_beacon(mgmt->frame_control) || |
| 1249 | memcmp(mgmt->bssid, common->curbssid, ETH_ALEN) != 0) |
| 1250 | return; |
| 1251 | |
Bruno Randolf | eef39be | 2010-11-16 10:58:43 +0900 | [diff] [blame] | 1252 | ewma_add(&ah->ah_beacon_rssi_avg, rssi); |
Bruno Randolf | b4ea449 | 2010-03-25 14:49:25 +0900 | [diff] [blame] | 1253 | |
| 1254 | /* in IBSS mode we should keep RSSI statistics per neighbour */ |
| 1255 | /* le16_to_cpu(mgmt->u.beacon.capab_info) & WLAN_CAPABILITY_IBSS */ |
| 1256 | } |
| 1257 | |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1258 | /* |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 1259 | * Compute padding position. skb must contain an IEEE 802.11 frame |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1260 | */ |
| 1261 | static int ath5k_common_padpos(struct sk_buff *skb) |
| 1262 | { |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1263 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1264 | __le16 frame_control = hdr->frame_control; |
| 1265 | int padpos = 24; |
| 1266 | |
Pavel Roskin | d2c7f77 | 2011-07-07 18:14:07 -0400 | [diff] [blame] | 1267 | if (ieee80211_has_a4(frame_control)) |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1268 | padpos += ETH_ALEN; |
Pavel Roskin | d2c7f77 | 2011-07-07 18:14:07 -0400 | [diff] [blame] | 1269 | |
| 1270 | if (ieee80211_is_data_qos(frame_control)) |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1271 | padpos += IEEE80211_QOS_CTL_LEN; |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1272 | |
| 1273 | return padpos; |
| 1274 | } |
| 1275 | |
| 1276 | /* |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 1277 | * This function expects an 802.11 frame and returns the number of |
| 1278 | * bytes added, or -1 if we don't have enough header room. |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1279 | */ |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1280 | static int ath5k_add_padding(struct sk_buff *skb) |
| 1281 | { |
| 1282 | int padpos = ath5k_common_padpos(skb); |
| 1283 | int padsize = padpos & 3; |
| 1284 | |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1285 | if (padsize && skb->len > padpos) { |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1286 | |
| 1287 | if (skb_headroom(skb) < padsize) |
| 1288 | return -1; |
| 1289 | |
| 1290 | skb_push(skb, padsize); |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1291 | memmove(skb->data, skb->data + padsize, padpos); |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1292 | return padsize; |
| 1293 | } |
| 1294 | |
| 1295 | return 0; |
| 1296 | } |
| 1297 | |
| 1298 | /* |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 1299 | * The MAC header is padded to have 32-bit boundary if the |
| 1300 | * packet payload is non-zero. The general calculation for |
| 1301 | * padsize would take into account odd header lengths: |
| 1302 | * padsize = 4 - (hdrlen & 3); however, since only |
| 1303 | * even-length headers are used, padding can only be 0 or 2 |
| 1304 | * bytes and we can optimize this a bit. We must not try to |
| 1305 | * remove padding from short control frames that do not have a |
| 1306 | * payload. |
| 1307 | * |
| 1308 | * This function expects an 802.11 frame and returns the number of |
| 1309 | * bytes removed. |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1310 | */ |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1311 | static int ath5k_remove_padding(struct sk_buff *skb) |
| 1312 | { |
| 1313 | int padpos = ath5k_common_padpos(skb); |
| 1314 | int padsize = padpos & 3; |
| 1315 | |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1316 | if (padsize && skb->len >= padpos + padsize) { |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1317 | memmove(skb->data + padsize, skb->data, padpos); |
| 1318 | skb_pull(skb, padsize); |
| 1319 | return padsize; |
| 1320 | } |
| 1321 | |
| 1322 | return 0; |
| 1323 | } |
| 1324 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1325 | static void |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1326 | ath5k_receive_frame(struct ath5k_softc *sc, struct sk_buff *skb, |
| 1327 | struct ath5k_rx_status *rs) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1328 | { |
Bob Copeland | 1c5256b | 2009-08-24 23:00:32 -0400 | [diff] [blame] | 1329 | struct ieee80211_rx_status *rxs; |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1330 | |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1331 | ath5k_remove_padding(skb); |
| 1332 | |
| 1333 | rxs = IEEE80211_SKB_RXCB(skb); |
| 1334 | |
| 1335 | rxs->flag = 0; |
| 1336 | if (unlikely(rs->rs_status & AR5K_RXERR_MIC)) |
| 1337 | rxs->flag |= RX_FLAG_MMIC_ERROR; |
| 1338 | |
| 1339 | /* |
| 1340 | * always extend the mac timestamp, since this information is |
| 1341 | * also needed for proper IBSS merging. |
| 1342 | * |
| 1343 | * XXX: it might be too late to do it here, since rs_tstamp is |
| 1344 | * 15bit only. that means TSF extension has to be done within |
| 1345 | * 32768usec (about 32ms). it might be necessary to move this to |
| 1346 | * the interrupt handler, like it is done in madwifi. |
| 1347 | * |
| 1348 | * Unfortunately we don't know when the hardware takes the rx |
| 1349 | * timestamp (beginning of phy frame, data frame, end of rx?). |
| 1350 | * The only thing we know is that it is hardware specific... |
| 1351 | * On AR5213 it seems the rx timestamp is at the end of the |
| 1352 | * frame, but i'm not sure. |
| 1353 | * |
| 1354 | * NOTE: mac80211 defines mactime at the beginning of the first |
| 1355 | * data symbol. Since we don't have any time references it's |
| 1356 | * impossible to comply to that. This affects IBSS merge only |
| 1357 | * right now, so it's not too bad... |
| 1358 | */ |
| 1359 | rxs->mactime = ath5k_extend_tsf(sc->ah, rs->rs_tstamp); |
Johannes Berg | 6ebacbb | 2011-02-23 15:06:08 +0100 | [diff] [blame] | 1360 | rxs->flag |= RX_FLAG_MACTIME_MPDU; |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1361 | |
| 1362 | rxs->freq = sc->curchan->center_freq; |
Bruno Randolf | 930a762 | 2011-01-19 18:21:13 +0900 | [diff] [blame] | 1363 | rxs->band = sc->curchan->band; |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1364 | |
| 1365 | rxs->signal = sc->ah->ah_noise_floor + rs->rs_rssi; |
| 1366 | |
| 1367 | rxs->antenna = rs->rs_antenna; |
| 1368 | |
| 1369 | if (rs->rs_antenna > 0 && rs->rs_antenna < 5) |
| 1370 | sc->stats.antenna_rx[rs->rs_antenna]++; |
| 1371 | else |
| 1372 | sc->stats.antenna_rx[0]++; /* invalid */ |
| 1373 | |
| 1374 | rxs->rate_idx = ath5k_hw_to_driver_rix(sc, rs->rs_rate); |
| 1375 | rxs->flag |= ath5k_rx_decrypted(sc, skb, rs); |
| 1376 | |
| 1377 | if (rxs->rate_idx >= 0 && rs->rs_rate == |
Bruno Randolf | 930a762 | 2011-01-19 18:21:13 +0900 | [diff] [blame] | 1378 | sc->sbands[sc->curchan->band].bitrates[rxs->rate_idx].hw_value_short) |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1379 | rxs->flag |= RX_FLAG_SHORTPRE; |
| 1380 | |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1381 | trace_ath5k_rx(sc, skb); |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1382 | |
| 1383 | ath5k_update_beacon_rssi(sc, skb, rs->rs_rssi); |
| 1384 | |
| 1385 | /* check beacons in IBSS mode */ |
| 1386 | if (sc->opmode == NL80211_IFTYPE_ADHOC) |
| 1387 | ath5k_check_ibss_tsf(sc, skb, rxs); |
| 1388 | |
| 1389 | ieee80211_rx(sc->hw, skb); |
| 1390 | } |
| 1391 | |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1392 | /** ath5k_frame_receive_ok() - Do we want to receive this frame or not? |
| 1393 | * |
| 1394 | * Check if we want to further process this frame or not. Also update |
| 1395 | * statistics. Return true if we want this frame, false if not. |
| 1396 | */ |
| 1397 | static bool |
| 1398 | ath5k_receive_frame_ok(struct ath5k_softc *sc, struct ath5k_rx_status *rs) |
| 1399 | { |
| 1400 | sc->stats.rx_all_count++; |
Ben Greear | b72acdd | 2010-10-01 10:54:04 -0700 | [diff] [blame] | 1401 | sc->stats.rx_bytes_count += rs->rs_datalen; |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1402 | |
| 1403 | if (unlikely(rs->rs_status)) { |
| 1404 | if (rs->rs_status & AR5K_RXERR_CRC) |
| 1405 | sc->stats.rxerr_crc++; |
| 1406 | if (rs->rs_status & AR5K_RXERR_FIFO) |
| 1407 | sc->stats.rxerr_fifo++; |
| 1408 | if (rs->rs_status & AR5K_RXERR_PHY) { |
| 1409 | sc->stats.rxerr_phy++; |
| 1410 | if (rs->rs_phyerr > 0 && rs->rs_phyerr < 32) |
| 1411 | sc->stats.rxerr_phy_code[rs->rs_phyerr]++; |
| 1412 | return false; |
| 1413 | } |
| 1414 | if (rs->rs_status & AR5K_RXERR_DECRYPT) { |
| 1415 | /* |
| 1416 | * Decrypt error. If the error occurred |
| 1417 | * because there was no hardware key, then |
| 1418 | * let the frame through so the upper layers |
| 1419 | * can process it. This is necessary for 5210 |
| 1420 | * parts which have no way to setup a ``clear'' |
| 1421 | * key cache entry. |
| 1422 | * |
| 1423 | * XXX do key cache faulting |
| 1424 | */ |
| 1425 | sc->stats.rxerr_decrypt++; |
| 1426 | if (rs->rs_keyix == AR5K_RXKEYIX_INVALID && |
| 1427 | !(rs->rs_status & AR5K_RXERR_CRC)) |
| 1428 | return true; |
| 1429 | } |
| 1430 | if (rs->rs_status & AR5K_RXERR_MIC) { |
| 1431 | sc->stats.rxerr_mic++; |
| 1432 | return true; |
| 1433 | } |
| 1434 | |
Bob Copeland | 23538c2 | 2010-08-15 13:03:13 -0400 | [diff] [blame] | 1435 | /* reject any frames with non-crypto errors */ |
| 1436 | if (rs->rs_status & ~(AR5K_RXERR_DECRYPT)) |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1437 | return false; |
| 1438 | } |
| 1439 | |
| 1440 | if (unlikely(rs->rs_more)) { |
| 1441 | sc->stats.rxerr_jumbo++; |
| 1442 | return false; |
| 1443 | } |
| 1444 | return true; |
| 1445 | } |
| 1446 | |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1447 | static void |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 1448 | ath5k_set_current_imask(struct ath5k_softc *sc) |
| 1449 | { |
| 1450 | enum ath5k_int imask = sc->imask; |
| 1451 | unsigned long flags; |
| 1452 | |
| 1453 | spin_lock_irqsave(&sc->irqlock, flags); |
| 1454 | if (sc->rx_pending) |
| 1455 | imask &= ~AR5K_INT_RX_ALL; |
| 1456 | if (sc->tx_pending) |
| 1457 | imask &= ~AR5K_INT_TX_ALL; |
| 1458 | ath5k_hw_set_imr(sc->ah, imask); |
| 1459 | spin_unlock_irqrestore(&sc->irqlock, flags); |
| 1460 | } |
| 1461 | |
| 1462 | static void |
Bruno Randolf | 8a89f06 | 2010-06-16 19:11:51 +0900 | [diff] [blame] | 1463 | ath5k_tasklet_rx(unsigned long data) |
| 1464 | { |
Bruno Randolf | b47f407 | 2008-03-05 18:35:45 +0900 | [diff] [blame] | 1465 | struct ath5k_rx_status rs = {}; |
Bob Copeland | b6ea035 | 2009-01-10 14:42:54 -0500 | [diff] [blame] | 1466 | struct sk_buff *skb, *next_skb; |
| 1467 | dma_addr_t next_skb_addr; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1468 | struct ath5k_softc *sc = (void *)data; |
Luis R. Rodriguez | cc861f7 | 2009-11-04 09:11:34 -0800 | [diff] [blame] | 1469 | struct ath5k_hw *ah = sc->ah; |
| 1470 | struct ath_common *common = ath5k_hw_common(ah); |
Bob Copeland | c57ca81 | 2009-04-15 07:57:35 -0400 | [diff] [blame] | 1471 | struct ath5k_buf *bf; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1472 | struct ath5k_desc *ds; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1473 | int ret; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1474 | |
| 1475 | spin_lock(&sc->rxbuflock); |
Jiri Slaby | 3a0f2c8 | 2008-07-15 17:44:18 +0200 | [diff] [blame] | 1476 | if (list_empty(&sc->rxbuf)) { |
| 1477 | ATH5K_WARN(sc, "empty rx buf pool\n"); |
| 1478 | goto unlock; |
| 1479 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1480 | do { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1481 | bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list); |
| 1482 | BUG_ON(bf->skb == NULL); |
| 1483 | skb = bf->skb; |
| 1484 | ds = bf->desc; |
| 1485 | |
Bob Copeland | c57ca81 | 2009-04-15 07:57:35 -0400 | [diff] [blame] | 1486 | /* bail if HW is still using self-linked descriptor */ |
| 1487 | if (ath5k_hw_get_rxdp(sc->ah) == bf->daddr) |
| 1488 | break; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1489 | |
Bruno Randolf | b47f407 | 2008-03-05 18:35:45 +0900 | [diff] [blame] | 1490 | ret = sc->ah->ah_proc_rx_desc(sc->ah, ds, &rs); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1491 | if (unlikely(ret == -EINPROGRESS)) |
| 1492 | break; |
| 1493 | else if (unlikely(ret)) { |
| 1494 | ATH5K_ERR(sc, "error in processing rx descriptor\n"); |
Bruno Randolf | 7644395 | 2010-03-09 16:56:00 +0900 | [diff] [blame] | 1495 | sc->stats.rxerr_proc++; |
Bruno Randolf | b16062f | 2010-06-16 19:11:46 +0900 | [diff] [blame] | 1496 | break; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1497 | } |
| 1498 | |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1499 | if (ath5k_receive_frame_ok(sc, &rs)) { |
| 1500 | next_skb = ath5k_rx_skb_alloc(sc, &next_skb_addr); |
Bruno Randolf | 7644395 | 2010-03-09 16:56:00 +0900 | [diff] [blame] | 1501 | |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1502 | /* |
| 1503 | * If we can't replace bf->skb with a new skb under |
| 1504 | * memory pressure, just skip this packet |
| 1505 | */ |
| 1506 | if (!next_skb) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1507 | goto next; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1508 | |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1509 | dma_unmap_single(sc->dev, bf->skbaddr, |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1510 | common->rx_bufsize, |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1511 | DMA_FROM_DEVICE); |
Bruno Randolf | 02a78b4 | 2010-06-16 19:11:56 +0900 | [diff] [blame] | 1512 | |
| 1513 | skb_put(skb, rs.rs_datalen); |
| 1514 | |
| 1515 | ath5k_receive_frame(sc, skb, &rs); |
| 1516 | |
| 1517 | bf->skb = next_skb; |
| 1518 | bf->skbaddr = next_skb_addr; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1519 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1520 | next: |
| 1521 | list_move_tail(&bf->list, &sc->rxbuf); |
| 1522 | } while (ath5k_rxbuf_setup(sc, bf) == 0); |
Jiri Slaby | 3a0f2c8 | 2008-07-15 17:44:18 +0200 | [diff] [blame] | 1523 | unlock: |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1524 | spin_unlock(&sc->rxbuflock); |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 1525 | sc->rx_pending = false; |
| 1526 | ath5k_set_current_imask(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1527 | } |
| 1528 | |
| 1529 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1530 | /*************\ |
| 1531 | * TX Handling * |
| 1532 | \*************/ |
| 1533 | |
Johannes Berg | 7bb4568 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 1534 | void |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 1535 | ath5k_tx_queue(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1536 | struct ath5k_txq *txq) |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1537 | { |
| 1538 | struct ath5k_softc *sc = hw->priv; |
| 1539 | struct ath5k_buf *bf; |
| 1540 | unsigned long flags; |
| 1541 | int padsize; |
| 1542 | |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1543 | trace_ath5k_tx(sc, skb, txq); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1544 | |
| 1545 | /* |
| 1546 | * The hardware expects the header padded to 4 byte boundaries. |
| 1547 | * If this is not the case, we add the padding after the header. |
| 1548 | */ |
| 1549 | padsize = ath5k_add_padding(skb); |
| 1550 | if (padsize < 0) { |
| 1551 | ATH5K_ERR(sc, "tx hdrlen not %%4: not enough" |
| 1552 | " headroom to pad"); |
| 1553 | goto drop_packet; |
| 1554 | } |
| 1555 | |
John W. Linville | 81266ba | 2011-03-07 16:32:59 -0500 | [diff] [blame] | 1556 | if (txq->txq_len >= txq->txq_max) |
Bruno Randolf | 925e0b0 | 2010-09-17 11:36:35 +0900 | [diff] [blame] | 1557 | ieee80211_stop_queue(hw, txq->qnum); |
| 1558 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1559 | spin_lock_irqsave(&sc->txbuflock, flags); |
| 1560 | if (list_empty(&sc->txbuf)) { |
| 1561 | ATH5K_ERR(sc, "no further txbuf available, dropping packet\n"); |
| 1562 | spin_unlock_irqrestore(&sc->txbuflock, flags); |
Bruno Randolf | 651d937 | 2010-09-17 11:36:46 +0900 | [diff] [blame] | 1563 | ieee80211_stop_queues(hw); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1564 | goto drop_packet; |
| 1565 | } |
| 1566 | bf = list_first_entry(&sc->txbuf, struct ath5k_buf, list); |
| 1567 | list_del(&bf->list); |
| 1568 | sc->txbuf_len--; |
| 1569 | if (list_empty(&sc->txbuf)) |
| 1570 | ieee80211_stop_queues(hw); |
| 1571 | spin_unlock_irqrestore(&sc->txbuflock, flags); |
| 1572 | |
| 1573 | bf->skb = skb; |
| 1574 | |
| 1575 | if (ath5k_txbuf_setup(sc, bf, txq, padsize)) { |
| 1576 | bf->skb = NULL; |
| 1577 | spin_lock_irqsave(&sc->txbuflock, flags); |
| 1578 | list_add_tail(&bf->list, &sc->txbuf); |
| 1579 | sc->txbuf_len++; |
| 1580 | spin_unlock_irqrestore(&sc->txbuflock, flags); |
| 1581 | goto drop_packet; |
| 1582 | } |
Johannes Berg | 7bb4568 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 1583 | return; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1584 | |
| 1585 | drop_packet: |
| 1586 | dev_kfree_skb_any(skb); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1587 | } |
| 1588 | |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1589 | static void |
| 1590 | ath5k_tx_frame_completed(struct ath5k_softc *sc, struct sk_buff *skb, |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1591 | struct ath5k_txq *txq, struct ath5k_tx_status *ts) |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1592 | { |
| 1593 | struct ieee80211_tx_info *info; |
Felix Fietkau | ed89508 | 2011-04-10 18:32:17 +0200 | [diff] [blame] | 1594 | u8 tries[3]; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1595 | int i; |
| 1596 | |
| 1597 | sc->stats.tx_all_count++; |
Ben Greear | b72acdd | 2010-10-01 10:54:04 -0700 | [diff] [blame] | 1598 | sc->stats.tx_bytes_count += skb->len; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1599 | info = IEEE80211_SKB_CB(skb); |
| 1600 | |
Felix Fietkau | ed89508 | 2011-04-10 18:32:17 +0200 | [diff] [blame] | 1601 | tries[0] = info->status.rates[0].count; |
| 1602 | tries[1] = info->status.rates[1].count; |
| 1603 | tries[2] = info->status.rates[2].count; |
| 1604 | |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1605 | ieee80211_tx_info_clear_status(info); |
Felix Fietkau | ed89508 | 2011-04-10 18:32:17 +0200 | [diff] [blame] | 1606 | |
| 1607 | for (i = 0; i < ts->ts_final_idx; i++) { |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1608 | struct ieee80211_tx_rate *r = |
| 1609 | &info->status.rates[i]; |
| 1610 | |
Felix Fietkau | ed89508 | 2011-04-10 18:32:17 +0200 | [diff] [blame] | 1611 | r->count = tries[i]; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1612 | } |
| 1613 | |
Felix Fietkau | ed89508 | 2011-04-10 18:32:17 +0200 | [diff] [blame] | 1614 | info->status.rates[ts->ts_final_idx].count = ts->ts_final_retry; |
Felix Fietkau | 6d7b97b | 2011-04-09 21:37:14 +0200 | [diff] [blame] | 1615 | info->status.rates[ts->ts_final_idx + 1].idx = -1; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1616 | |
| 1617 | if (unlikely(ts->ts_status)) { |
| 1618 | sc->stats.ack_fail++; |
| 1619 | if (ts->ts_status & AR5K_TXERR_FILT) { |
| 1620 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; |
| 1621 | sc->stats.txerr_filt++; |
| 1622 | } |
| 1623 | if (ts->ts_status & AR5K_TXERR_XRETRY) |
| 1624 | sc->stats.txerr_retry++; |
| 1625 | if (ts->ts_status & AR5K_TXERR_FIFO) |
| 1626 | sc->stats.txerr_fifo++; |
| 1627 | } else { |
| 1628 | info->flags |= IEEE80211_TX_STAT_ACK; |
| 1629 | info->status.ack_signal = ts->ts_rssi; |
Felix Fietkau | 6d7b97b | 2011-04-09 21:37:14 +0200 | [diff] [blame] | 1630 | |
| 1631 | /* count the successful attempt as well */ |
| 1632 | info->status.rates[ts->ts_final_idx].count++; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1633 | } |
| 1634 | |
| 1635 | /* |
| 1636 | * Remove MAC header padding before giving the frame |
| 1637 | * back to mac80211. |
| 1638 | */ |
| 1639 | ath5k_remove_padding(skb); |
| 1640 | |
| 1641 | if (ts->ts_antenna > 0 && ts->ts_antenna < 5) |
| 1642 | sc->stats.antenna_tx[ts->ts_antenna]++; |
| 1643 | else |
| 1644 | sc->stats.antenna_tx[0]++; /* invalid */ |
| 1645 | |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1646 | trace_ath5k_tx_complete(sc, skb, txq, ts); |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1647 | ieee80211_tx_status(sc->hw, skb); |
| 1648 | } |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1649 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1650 | static void |
| 1651 | ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq) |
| 1652 | { |
Bruno Randolf | b47f407 | 2008-03-05 18:35:45 +0900 | [diff] [blame] | 1653 | struct ath5k_tx_status ts = {}; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1654 | struct ath5k_buf *bf, *bf0; |
| 1655 | struct ath5k_desc *ds; |
| 1656 | struct sk_buff *skb; |
Bruno Randolf | 1440401 | 2010-09-17 11:36:51 +0900 | [diff] [blame] | 1657 | int ret; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1658 | |
| 1659 | spin_lock(&txq->lock); |
| 1660 | list_for_each_entry_safe(bf, bf0, &txq->q, list) { |
Bruno Randolf | 2341329 | 2010-09-17 11:37:07 +0900 | [diff] [blame] | 1661 | |
| 1662 | txq->txq_poll_mark = false; |
| 1663 | |
| 1664 | /* skb might already have been processed last time. */ |
| 1665 | if (bf->skb != NULL) { |
| 1666 | ds = bf->desc; |
| 1667 | |
| 1668 | ret = sc->ah->ah_proc_tx_desc(sc->ah, ds, &ts); |
| 1669 | if (unlikely(ret == -EINPROGRESS)) |
| 1670 | break; |
| 1671 | else if (unlikely(ret)) { |
| 1672 | ATH5K_ERR(sc, |
| 1673 | "error %d while processing " |
| 1674 | "queue %u\n", ret, txq->qnum); |
| 1675 | break; |
| 1676 | } |
| 1677 | |
| 1678 | skb = bf->skb; |
| 1679 | bf->skb = NULL; |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1680 | |
| 1681 | dma_unmap_single(sc->dev, bf->skbaddr, skb->len, |
| 1682 | DMA_TO_DEVICE); |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1683 | ath5k_tx_frame_completed(sc, skb, txq, &ts); |
Bruno Randolf | 2341329 | 2010-09-17 11:37:07 +0900 | [diff] [blame] | 1684 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1685 | |
Bob Copeland | a05988b | 2010-04-07 23:55:58 -0400 | [diff] [blame] | 1686 | /* |
| 1687 | * It's possible that the hardware can say the buffer is |
| 1688 | * completed when it hasn't yet loaded the ds_link from |
Bruno Randolf | 2341329 | 2010-09-17 11:37:07 +0900 | [diff] [blame] | 1689 | * host memory and moved on. |
| 1690 | * Always keep the last descriptor to avoid HW races... |
Bob Copeland | a05988b | 2010-04-07 23:55:58 -0400 | [diff] [blame] | 1691 | */ |
Bruno Randolf | 2341329 | 2010-09-17 11:37:07 +0900 | [diff] [blame] | 1692 | if (ath5k_hw_get_txdp(sc->ah, txq->qnum) != bf->daddr) { |
| 1693 | spin_lock(&sc->txbuflock); |
| 1694 | list_move_tail(&bf->list, &sc->txbuf); |
| 1695 | sc->txbuf_len++; |
| 1696 | txq->txq_len--; |
| 1697 | spin_unlock(&sc->txbuflock); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1698 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1699 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1700 | spin_unlock(&txq->lock); |
Bruno Randolf | 4198a8d | 2010-10-05 13:27:17 +0900 | [diff] [blame] | 1701 | if (txq->txq_len < ATH5K_TXQ_LEN_LOW && txq->qnum < 4) |
Bruno Randolf | 925e0b0 | 2010-09-17 11:36:35 +0900 | [diff] [blame] | 1702 | ieee80211_wake_queue(sc->hw, txq->qnum); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1703 | } |
| 1704 | |
| 1705 | static void |
| 1706 | ath5k_tasklet_tx(unsigned long data) |
| 1707 | { |
Bob Copeland | 8784d2e | 2009-07-29 17:32:28 -0400 | [diff] [blame] | 1708 | int i; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1709 | struct ath5k_softc *sc = (void *)data; |
| 1710 | |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1711 | for (i = 0; i < AR5K_NUM_TX_QUEUES; i++) |
Bob Copeland | 8784d2e | 2009-07-29 17:32:28 -0400 | [diff] [blame] | 1712 | if (sc->txqs[i].setup && (sc->ah->ah_txq_isr & BIT(i))) |
| 1713 | ath5k_tx_processq(sc, &sc->txqs[i]); |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 1714 | |
| 1715 | sc->tx_pending = false; |
| 1716 | ath5k_set_current_imask(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1717 | } |
| 1718 | |
| 1719 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1720 | /*****************\ |
| 1721 | * Beacon handling * |
| 1722 | \*****************/ |
| 1723 | |
| 1724 | /* |
| 1725 | * Setup the beacon frame for transmit. |
| 1726 | */ |
| 1727 | static int |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1728 | ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1729 | { |
| 1730 | struct sk_buff *skb = bf->skb; |
Johannes Berg | a888d52 | 2008-05-26 16:43:39 +0200 | [diff] [blame] | 1731 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1732 | struct ath5k_hw *ah = sc->ah; |
| 1733 | struct ath5k_desc *ds; |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 1734 | int ret = 0; |
| 1735 | u8 antenna; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1736 | u32 flags; |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1737 | const int padsize = 0; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1738 | |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1739 | bf->skbaddr = dma_map_single(sc->dev, skb->data, skb->len, |
| 1740 | DMA_TO_DEVICE); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1741 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "skb %p [data %p len %u] " |
| 1742 | "skbaddr %llx\n", skb, skb->data, skb->len, |
| 1743 | (unsigned long long)bf->skbaddr); |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1744 | |
| 1745 | if (dma_mapping_error(sc->dev, bf->skbaddr)) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1746 | ATH5K_ERR(sc, "beacon DMA mapping failed\n"); |
| 1747 | return -EIO; |
| 1748 | } |
| 1749 | |
| 1750 | ds = bf->desc; |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 1751 | antenna = ah->ah_tx_ant; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1752 | |
| 1753 | flags = AR5K_TXDESC_NOACK; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1754 | if (sc->opmode == NL80211_IFTYPE_ADHOC && ath5k_hw_hasveol(ah)) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1755 | ds->ds_link = bf->daddr; /* self-linked */ |
| 1756 | flags |= AR5K_TXDESC_VEOL; |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 1757 | } else |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1758 | ds->ds_link = 0; |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 1759 | |
| 1760 | /* |
| 1761 | * If we use multiple antennas on AP and use |
| 1762 | * the Sectored AP scenario, switch antenna every |
| 1763 | * 4 beacons to make sure everybody hears our AP. |
| 1764 | * When a client tries to associate, hw will keep |
| 1765 | * track of the tx antenna to be used for this client |
| 1766 | * automaticaly, based on ACKed packets. |
| 1767 | * |
| 1768 | * Note: AP still listens and transmits RTS on the |
| 1769 | * default antenna which is supposed to be an omni. |
| 1770 | * |
| 1771 | * Note2: On sectored scenarios it's possible to have |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 1772 | * multiple antennas (1 omni -- the default -- and 14 |
| 1773 | * sectors), so if we choose to actually support this |
| 1774 | * mode, we need to allow the user to set how many antennas |
| 1775 | * we have and tweak the code below to send beacons |
| 1776 | * on all of them. |
Nick Kossifidis | 2bed03e | 2009-04-30 15:55:49 -0400 | [diff] [blame] | 1777 | */ |
| 1778 | if (ah->ah_ant_mode == AR5K_ANTMODE_SECTOR_AP) |
| 1779 | antenna = sc->bsent & 4 ? 2 : 1; |
| 1780 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1781 | |
Nick Kossifidis | 8f655dd | 2009-03-15 22:20:35 +0200 | [diff] [blame] | 1782 | /* FIXME: If we are in g mode and rate is a CCK rate |
| 1783 | * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta |
| 1784 | * from tx power (value is in dB units already) */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1785 | ds->ds_data = bf->skbaddr; |
Bruno Randolf | 281c56d | 2008-02-05 18:44:55 +0900 | [diff] [blame] | 1786 | ret = ah->ah_setup_tx_desc(ah, ds, skb->len, |
Benoit Papillault | 8127fbd | 2010-02-27 23:05:26 +0100 | [diff] [blame] | 1787 | ieee80211_get_hdrlen_from_skb(skb), padsize, |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 1788 | AR5K_PKT_TYPE_BEACON, (sc->power_level * 2), |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1789 | ieee80211_get_tx_rate(sc->hw, info)->hw_value, |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1790 | 1, AR5K_TXKEYIX_INVALID, |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 1791 | antenna, flags, 0, 0); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1792 | if (ret) |
| 1793 | goto err_unmap; |
| 1794 | |
| 1795 | return 0; |
| 1796 | err_unmap: |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 1797 | dma_unmap_single(sc->dev, bf->skbaddr, skb->len, DMA_TO_DEVICE); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1798 | return ret; |
| 1799 | } |
| 1800 | |
| 1801 | /* |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1802 | * Updates the beacon that is sent by ath5k_beacon_send. For adhoc, |
| 1803 | * this is called only once at config_bss time, for AP we do it every |
| 1804 | * SWBA interrupt so that the TIM will reflect buffered frames. |
| 1805 | * |
| 1806 | * Called with the beacon lock. |
| 1807 | */ |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 1808 | int |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1809 | ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| 1810 | { |
| 1811 | int ret; |
| 1812 | struct ath5k_softc *sc = hw->priv; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1813 | struct ath5k_vif *avf = (void *)vif->drv_priv; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1814 | struct sk_buff *skb; |
| 1815 | |
| 1816 | if (WARN_ON(!vif)) { |
| 1817 | ret = -EINVAL; |
| 1818 | goto out; |
| 1819 | } |
| 1820 | |
| 1821 | skb = ieee80211_beacon_get(hw, vif); |
| 1822 | |
| 1823 | if (!skb) { |
| 1824 | ret = -ENOMEM; |
| 1825 | goto out; |
| 1826 | } |
| 1827 | |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1828 | ath5k_txbuf_free_skb(sc, avf->bbuf); |
| 1829 | avf->bbuf->skb = skb; |
| 1830 | ret = ath5k_beacon_setup(sc, avf->bbuf); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1831 | if (ret) |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1832 | avf->bbuf->skb = NULL; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 1833 | out: |
| 1834 | return ret; |
| 1835 | } |
| 1836 | |
| 1837 | /* |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1838 | * Transmit a beacon frame at SWBA. Dynamic updates to the |
| 1839 | * frame contents are done as needed and the slot time is |
| 1840 | * also adjusted based on current state. |
| 1841 | * |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 1842 | * This is called from software irq context (beacontq tasklets) |
| 1843 | * or user context from ath5k_beacon_config. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1844 | */ |
| 1845 | static void |
| 1846 | ath5k_beacon_send(struct ath5k_softc *sc) |
| 1847 | { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1848 | struct ath5k_hw *ah = sc->ah; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1849 | struct ieee80211_vif *vif; |
| 1850 | struct ath5k_vif *avf; |
| 1851 | struct ath5k_buf *bf; |
Bob Copeland | cec8db2 | 2009-07-04 12:59:51 -0400 | [diff] [blame] | 1852 | struct sk_buff *skb; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1853 | |
Bruno Randolf | be9b725 | 2008-01-23 10:27:51 +0900 | [diff] [blame] | 1854 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "in beacon_send\n"); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1855 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1856 | /* |
| 1857 | * Check if the previous beacon has gone out. If |
Bob Copeland | a180a13 | 2010-08-15 13:03:12 -0400 | [diff] [blame] | 1858 | * not, don't don't try to post another: skip this |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1859 | * period and wait for the next. Missed beacons |
| 1860 | * indicate a problem and should not occur. If we |
| 1861 | * miss too many consecutive beacons reset the device. |
| 1862 | */ |
| 1863 | if (unlikely(ath5k_hw_num_tx_pending(ah, sc->bhalq) != 0)) { |
| 1864 | sc->bmisscount++; |
Bruno Randolf | be9b725 | 2008-01-23 10:27:51 +0900 | [diff] [blame] | 1865 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1866 | "missed %u consecutive beacons\n", sc->bmisscount); |
Nick Kossifidis | 428cbd4 | 2009-04-30 15:55:47 -0400 | [diff] [blame] | 1867 | if (sc->bmisscount > 10) { /* NB: 10 is a guess */ |
Bruno Randolf | be9b725 | 2008-01-23 10:27:51 +0900 | [diff] [blame] | 1868 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1869 | "stuck beacon time (%u missed)\n", |
| 1870 | sc->bmisscount); |
Bruno Randolf | 8d67a03 | 2010-06-16 19:11:12 +0900 | [diff] [blame] | 1871 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 1872 | "stuck beacon, resetting\n"); |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 1873 | ieee80211_queue_work(sc->hw, &sc->reset_work); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1874 | } |
| 1875 | return; |
| 1876 | } |
| 1877 | if (unlikely(sc->bmisscount != 0)) { |
Bruno Randolf | be9b725 | 2008-01-23 10:27:51 +0900 | [diff] [blame] | 1878 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1879 | "resume beacon xmit after %u misses\n", |
| 1880 | sc->bmisscount); |
| 1881 | sc->bmisscount = 0; |
| 1882 | } |
| 1883 | |
Javier Cardona | b93996c | 2010-12-07 13:37:56 -0800 | [diff] [blame] | 1884 | if ((sc->opmode == NL80211_IFTYPE_AP && sc->num_ap_vifs > 1) || |
| 1885 | sc->opmode == NL80211_IFTYPE_MESH_POINT) { |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1886 | u64 tsf = ath5k_hw_get_tsf64(ah); |
| 1887 | u32 tsftu = TSF_TO_TU(tsf); |
| 1888 | int slot = ((tsftu % sc->bintval) * ATH_BCBUF) / sc->bintval; |
| 1889 | vif = sc->bslot[(slot + 1) % ATH_BCBUF]; |
| 1890 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
| 1891 | "tsf %llx tsftu %x intval %u slot %u vif %p\n", |
| 1892 | (unsigned long long)tsf, tsftu, sc->bintval, slot, vif); |
| 1893 | } else /* only one interface */ |
| 1894 | vif = sc->bslot[0]; |
| 1895 | |
| 1896 | if (!vif) |
| 1897 | return; |
| 1898 | |
| 1899 | avf = (void *)vif->drv_priv; |
| 1900 | bf = avf->bbuf; |
| 1901 | if (unlikely(bf->skb == NULL || sc->opmode == NL80211_IFTYPE_STATION || |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1902 | sc->opmode == NL80211_IFTYPE_MONITOR)) { |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1903 | ATH5K_WARN(sc, "bf=%p bf_skb=%p\n", bf, bf ? bf->skb : NULL); |
| 1904 | return; |
| 1905 | } |
| 1906 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1907 | /* |
| 1908 | * Stop any current dma and put the new frame on the queue. |
| 1909 | * This should never fail since we check above that no frames |
| 1910 | * are still pending on the queue. |
| 1911 | */ |
Nick Kossifidis | 14fae2d | 2010-11-23 20:55:17 +0200 | [diff] [blame] | 1912 | if (unlikely(ath5k_hw_stop_beacon_queue(ah, sc->bhalq))) { |
Nick Kossifidis | 428cbd4 | 2009-04-30 15:55:47 -0400 | [diff] [blame] | 1913 | ATH5K_WARN(sc, "beacon queue %u didn't start/stop ?\n", sc->bhalq); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1914 | /* NB: hw still stops DMA, so proceed */ |
| 1915 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1916 | |
Javier Cardona | d82b577 | 2010-12-07 13:35:55 -0800 | [diff] [blame] | 1917 | /* refresh the beacon for AP or MESH mode */ |
| 1918 | if (sc->opmode == NL80211_IFTYPE_AP || |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 1919 | sc->opmode == NL80211_IFTYPE_MESH_POINT) |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1920 | ath5k_beacon_update(sc->hw, vif); |
Bob Copeland | 1071db8 | 2009-05-18 10:59:52 -0400 | [diff] [blame] | 1921 | |
Bob Copeland | 0e47225 | 2011-01-24 23:32:55 -0500 | [diff] [blame] | 1922 | trace_ath5k_tx(sc, bf->skb, &sc->txqs[sc->bhalq]); |
| 1923 | |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 1924 | ath5k_hw_set_txdp(ah, sc->bhalq, bf->daddr); |
| 1925 | ath5k_hw_start_tx_dma(ah, sc->bhalq); |
Bruno Randolf | be9b725 | 2008-01-23 10:27:51 +0900 | [diff] [blame] | 1926 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "TXDP[%u] = %llx (%p)\n", |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1927 | sc->bhalq, (unsigned long long)bf->daddr, bf->desc); |
| 1928 | |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1929 | skb = ieee80211_get_buffered_bc(sc->hw, vif); |
Bob Copeland | cec8db2 | 2009-07-04 12:59:51 -0400 | [diff] [blame] | 1930 | while (skb) { |
| 1931 | ath5k_tx_queue(sc->hw, skb, sc->cabq); |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1932 | skb = ieee80211_get_buffered_bc(sc->hw, vif); |
Bob Copeland | cec8db2 | 2009-07-04 12:59:51 -0400 | [diff] [blame] | 1933 | } |
| 1934 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1935 | sc->bsent++; |
| 1936 | } |
| 1937 | |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1938 | /** |
| 1939 | * ath5k_beacon_update_timers - update beacon timers |
| 1940 | * |
| 1941 | * @sc: struct ath5k_softc pointer we are operating on |
| 1942 | * @bc_tsf: the timestamp of the beacon. 0 to reset the TSF. -1 to perform a |
| 1943 | * beacon timer update based on the current HW TSF. |
| 1944 | * |
| 1945 | * Calculate the next target beacon transmit time (TBTT) based on the timestamp |
| 1946 | * of a received beacon or the current local hardware TSF and write it to the |
| 1947 | * beacon timer registers. |
| 1948 | * |
| 1949 | * This is called in a variety of situations, e.g. when a beacon is received, |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 1950 | * when a TSF update has been detected, but also when an new IBSS is created or |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1951 | * when we otherwise know we have to update the timers, but we keep it in this |
| 1952 | * function to have it all together in one place. |
| 1953 | */ |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 1954 | void |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1955 | ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1956 | { |
| 1957 | struct ath5k_hw *ah = sc->ah; |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1958 | u32 nexttbtt, intval, hw_tu, bc_tu; |
| 1959 | u64 hw_tsf; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1960 | |
| 1961 | intval = sc->bintval & AR5K_BEACON_PERIOD; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 1962 | if (sc->opmode == NL80211_IFTYPE_AP && sc->num_ap_vifs > 1) { |
| 1963 | intval /= ATH_BCBUF; /* staggered multi-bss beacons */ |
| 1964 | if (intval < 15) |
| 1965 | ATH5K_WARN(sc, "intval %u is too low, min 15\n", |
| 1966 | intval); |
| 1967 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1968 | if (WARN_ON(!intval)) |
| 1969 | return; |
| 1970 | |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1971 | /* beacon TSF converted to TU */ |
| 1972 | bc_tu = TSF_TO_TU(bc_tsf); |
| 1973 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1974 | /* current TSF converted to TU */ |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1975 | hw_tsf = ath5k_hw_get_tsf64(ah); |
| 1976 | hw_tu = TSF_TO_TU(hw_tsf); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 1977 | |
Pavel Roskin | 633d006 | 2011-07-07 18:14:01 -0400 | [diff] [blame] | 1978 | #define FUDGE (AR5K_TUNE_SW_BEACON_RESP + 3) |
Bruno Randolf | 11f21df | 2010-09-27 12:22:26 +0900 | [diff] [blame] | 1979 | /* We use FUDGE to make sure the next TBTT is ahead of the current TU. |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1980 | * Since we later subtract AR5K_TUNE_SW_BEACON_RESP (10) in the timer |
Bruno Randolf | 11f21df | 2010-09-27 12:22:26 +0900 | [diff] [blame] | 1981 | * configuration we need to make sure it is bigger than that. */ |
| 1982 | |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1983 | if (bc_tsf == -1) { |
| 1984 | /* |
| 1985 | * no beacons received, called internally. |
| 1986 | * just need to refresh timers based on HW TSF. |
| 1987 | */ |
| 1988 | nexttbtt = roundup(hw_tu + FUDGE, intval); |
| 1989 | } else if (bc_tsf == 0) { |
| 1990 | /* |
| 1991 | * no beacon received, probably called by ath5k_reset_tsf(). |
| 1992 | * reset TSF to start with 0. |
| 1993 | */ |
| 1994 | nexttbtt = intval; |
| 1995 | intval |= AR5K_BEACON_RESET_TSF; |
| 1996 | } else if (bc_tsf > hw_tsf) { |
| 1997 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1998 | * beacon received, SW merge happened but HW TSF not yet updated. |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 1999 | * not possible to reconfigure timers yet, but next time we |
| 2000 | * receive a beacon with the same BSSID, the hardware will |
| 2001 | * automatically update the TSF and then we need to reconfigure |
| 2002 | * the timers. |
| 2003 | */ |
| 2004 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 2005 | "need to wait for HW TSF sync\n"); |
| 2006 | return; |
| 2007 | } else { |
| 2008 | /* |
| 2009 | * most important case for beacon synchronization between STA. |
| 2010 | * |
| 2011 | * beacon received and HW TSF has been already updated by HW. |
| 2012 | * update next TBTT based on the TSF of the beacon, but make |
| 2013 | * sure it is ahead of our local TSF timer. |
| 2014 | */ |
| 2015 | nexttbtt = bc_tu + roundup(hw_tu + FUDGE - bc_tu, intval); |
| 2016 | } |
| 2017 | #undef FUDGE |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2018 | |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2019 | sc->nexttbtt = nexttbtt; |
| 2020 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2021 | intval |= AR5K_BEACON_ENA; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2022 | ath5k_hw_init_beacon(ah, nexttbtt, intval); |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 2023 | |
| 2024 | /* |
| 2025 | * debugging output last in order to preserve the time critical aspect |
| 2026 | * of this function |
| 2027 | */ |
| 2028 | if (bc_tsf == -1) |
| 2029 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 2030 | "reconfigured timers based on HW TSF\n"); |
| 2031 | else if (bc_tsf == 0) |
| 2032 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 2033 | "reset HW TSF and timers\n"); |
| 2034 | else |
| 2035 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
| 2036 | "updated timers based on beacon TSF\n"); |
| 2037 | |
| 2038 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
David Miller | 04f93a8 | 2008-02-15 16:08:59 -0800 | [diff] [blame] | 2039 | "bc_tsf %llx hw_tsf %llx bc_tu %u hw_tu %u nexttbtt %u\n", |
| 2040 | (unsigned long long) bc_tsf, |
| 2041 | (unsigned long long) hw_tsf, bc_tu, hw_tu, nexttbtt); |
Bruno Randolf | 9804b98 | 2008-01-19 18:17:59 +0900 | [diff] [blame] | 2042 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "intval %u %s %s\n", |
| 2043 | intval & AR5K_BEACON_PERIOD, |
| 2044 | intval & AR5K_BEACON_ENA ? "AR5K_BEACON_ENA" : "", |
| 2045 | intval & AR5K_BEACON_RESET_TSF ? "AR5K_BEACON_RESET_TSF" : ""); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2046 | } |
| 2047 | |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2048 | /** |
| 2049 | * ath5k_beacon_config - Configure the beacon queues and interrupts |
| 2050 | * |
| 2051 | * @sc: struct ath5k_softc pointer we are operating on |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2052 | * |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2053 | * In IBSS mode we use a self-linked tx descriptor if possible. We enable SWBA |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 2054 | * interrupts to detect TSF updates only. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2055 | */ |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 2056 | void |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2057 | ath5k_beacon_config(struct ath5k_softc *sc) |
| 2058 | { |
| 2059 | struct ath5k_hw *ah = sc->ah; |
Bob Copeland | b5f0395 | 2009-02-15 12:06:10 -0500 | [diff] [blame] | 2060 | unsigned long flags; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2061 | |
Bob Copeland | 2180049 | 2009-07-04 12:59:52 -0400 | [diff] [blame] | 2062 | spin_lock_irqsave(&sc->block, flags); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2063 | sc->bmisscount = 0; |
Jiri Slaby | dc1968e | 2008-07-23 13:17:34 +0200 | [diff] [blame] | 2064 | sc->imask &= ~(AR5K_INT_BMISS | AR5K_INT_SWBA); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2065 | |
Bob Copeland | 2180049 | 2009-07-04 12:59:52 -0400 | [diff] [blame] | 2066 | if (sc->enable_beacon) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2067 | /* |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2068 | * In IBSS mode we use a self-linked tx descriptor and let the |
| 2069 | * hardware send the beacons automatically. We have to load it |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2070 | * only once here. |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2071 | * We use the SWBA interrupt only to keep track of the beacon |
Bruno Randolf | 6ba81c2 | 2008-03-05 18:36:26 +0900 | [diff] [blame] | 2072 | * timers in order to detect automatic TSF updates. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2073 | */ |
| 2074 | ath5k_beaconq_config(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2075 | |
Bruno Randolf | 036cd1e | 2008-01-19 18:18:21 +0900 | [diff] [blame] | 2076 | sc->imask |= AR5K_INT_SWBA; |
| 2077 | |
Jiri Slaby | da966bc | 2008-10-12 22:54:10 +0200 | [diff] [blame] | 2078 | if (sc->opmode == NL80211_IFTYPE_ADHOC) { |
Bob Copeland | 2180049 | 2009-07-04 12:59:52 -0400 | [diff] [blame] | 2079 | if (ath5k_hw_hasveol(ah)) |
Jiri Slaby | da966bc | 2008-10-12 22:54:10 +0200 | [diff] [blame] | 2080 | ath5k_beacon_send(sc); |
Jiri Slaby | da966bc | 2008-10-12 22:54:10 +0200 | [diff] [blame] | 2081 | } else |
| 2082 | ath5k_beacon_update_timers(sc, -1); |
Bob Copeland | 2180049 | 2009-07-04 12:59:52 -0400 | [diff] [blame] | 2083 | } else { |
Nick Kossifidis | 14fae2d | 2010-11-23 20:55:17 +0200 | [diff] [blame] | 2084 | ath5k_hw_stop_beacon_queue(sc->ah, sc->bhalq); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2085 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2086 | |
Nick Kossifidis | c6e387a | 2008-08-29 22:45:39 +0300 | [diff] [blame] | 2087 | ath5k_hw_set_imr(ah, sc->imask); |
Bob Copeland | 2180049 | 2009-07-04 12:59:52 -0400 | [diff] [blame] | 2088 | mmiowb(); |
| 2089 | spin_unlock_irqrestore(&sc->block, flags); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2090 | } |
| 2091 | |
Nick Kossifidis | 428cbd4 | 2009-04-30 15:55:47 -0400 | [diff] [blame] | 2092 | static void ath5k_tasklet_beacon(unsigned long data) |
| 2093 | { |
| 2094 | struct ath5k_softc *sc = (struct ath5k_softc *) data; |
| 2095 | |
| 2096 | /* |
| 2097 | * Software beacon alert--time to send a beacon. |
| 2098 | * |
| 2099 | * In IBSS mode we use this interrupt just to |
| 2100 | * keep track of the next TBTT (target beacon |
| 2101 | * transmission time) in order to detect wether |
| 2102 | * automatic TSF updates happened. |
| 2103 | */ |
| 2104 | if (sc->opmode == NL80211_IFTYPE_ADHOC) { |
| 2105 | /* XXX: only if VEOL suppported */ |
| 2106 | u64 tsf = ath5k_hw_get_tsf64(sc->ah); |
| 2107 | sc->nexttbtt += sc->bintval; |
| 2108 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
| 2109 | "SWBA nexttbtt: %x hw_tu: %x " |
| 2110 | "TSF: %llx\n", |
| 2111 | sc->nexttbtt, |
| 2112 | TSF_TO_TU(tsf), |
| 2113 | (unsigned long long) tsf); |
| 2114 | } else { |
| 2115 | spin_lock(&sc->block); |
| 2116 | ath5k_beacon_send(sc); |
| 2117 | spin_unlock(&sc->block); |
| 2118 | } |
| 2119 | } |
| 2120 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2121 | |
| 2122 | /********************\ |
| 2123 | * Interrupt handling * |
| 2124 | \********************/ |
| 2125 | |
Bruno Randolf | 6a8a3f6 | 2010-03-25 14:49:19 +0900 | [diff] [blame] | 2126 | static void |
| 2127 | ath5k_intr_calibration_poll(struct ath5k_hw *ah) |
| 2128 | { |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 2129 | if (time_is_before_eq_jiffies(ah->ah_cal_next_ani) && |
| 2130 | !(ah->ah_cal_mask & AR5K_CALIBRATION_FULL)) { |
| 2131 | /* run ANI only when full calibration is not active */ |
| 2132 | ah->ah_cal_next_ani = jiffies + |
| 2133 | msecs_to_jiffies(ATH5K_TUNE_CALIBRATION_INTERVAL_ANI); |
| 2134 | tasklet_schedule(&ah->ah_sc->ani_tasklet); |
| 2135 | |
| 2136 | } else if (time_is_before_eq_jiffies(ah->ah_cal_next_full)) { |
Bruno Randolf | 6a8a3f6 | 2010-03-25 14:49:19 +0900 | [diff] [blame] | 2137 | ah->ah_cal_next_full = jiffies + |
| 2138 | msecs_to_jiffies(ATH5K_TUNE_CALIBRATION_INTERVAL_FULL); |
| 2139 | tasklet_schedule(&ah->ah_sc->calib); |
| 2140 | } |
| 2141 | /* we could use SWI to generate enough interrupts to meet our |
| 2142 | * calibration interval requirements, if necessary: |
| 2143 | * AR5K_REG_ENABLE_BITS(ah, AR5K_CR, AR5K_CR_SWI); */ |
| 2144 | } |
| 2145 | |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2146 | static void |
| 2147 | ath5k_schedule_rx(struct ath5k_softc *sc) |
| 2148 | { |
| 2149 | sc->rx_pending = true; |
| 2150 | tasklet_schedule(&sc->rxtq); |
| 2151 | } |
| 2152 | |
| 2153 | static void |
| 2154 | ath5k_schedule_tx(struct ath5k_softc *sc) |
| 2155 | { |
| 2156 | sc->tx_pending = true; |
| 2157 | tasklet_schedule(&sc->txtq); |
| 2158 | } |
| 2159 | |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2160 | static irqreturn_t |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2161 | ath5k_intr(int irq, void *dev_id) |
| 2162 | { |
| 2163 | struct ath5k_softc *sc = dev_id; |
| 2164 | struct ath5k_hw *ah = sc->ah; |
| 2165 | enum ath5k_int status; |
| 2166 | unsigned int counter = 1000; |
| 2167 | |
| 2168 | if (unlikely(test_bit(ATH_STAT_INVALID, sc->status) || |
Felix Fietkau | 4cebb34 | 2010-12-02 10:27:21 +0100 | [diff] [blame] | 2169 | ((ath5k_get_bus_type(ah) != ATH_AHB) && |
| 2170 | !ath5k_hw_is_intr_pending(ah)))) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2171 | return IRQ_NONE; |
| 2172 | |
| 2173 | do { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2174 | ath5k_hw_get_isr(ah, &status); /* NB: clears IRQ too */ |
| 2175 | ATH5K_DBG(sc, ATH5K_DEBUG_INTR, "status 0x%x/0x%x\n", |
| 2176 | status, sc->imask); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2177 | if (unlikely(status & AR5K_INT_FATAL)) { |
| 2178 | /* |
| 2179 | * Fatal errors are unrecoverable. |
| 2180 | * Typically these are caused by DMA errors. |
| 2181 | */ |
Bruno Randolf | 8d67a03 | 2010-06-16 19:11:12 +0900 | [diff] [blame] | 2182 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 2183 | "fatal int, resetting\n"); |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2184 | ieee80211_queue_work(sc->hw, &sc->reset_work); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2185 | } else if (unlikely(status & AR5K_INT_RXORN)) { |
Bruno Randolf | 87d77c4 | 2010-04-12 16:38:52 +0900 | [diff] [blame] | 2186 | /* |
| 2187 | * Receive buffers are full. Either the bus is busy or |
| 2188 | * the CPU is not fast enough to process all received |
| 2189 | * frames. |
| 2190 | * Older chipsets need a reset to come out of this |
| 2191 | * condition, but we treat it as RX for newer chips. |
| 2192 | * We don't know exactly which versions need a reset - |
| 2193 | * this guess is copied from the HAL. |
| 2194 | */ |
| 2195 | sc->stats.rxorn_intr++; |
Bruno Randolf | 8d67a03 | 2010-06-16 19:11:12 +0900 | [diff] [blame] | 2196 | if (ah->ah_mac_srev < AR5K_SREV_AR5212) { |
| 2197 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 2198 | "rx overrun, resetting\n"); |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2199 | ieee80211_queue_work(sc->hw, &sc->reset_work); |
Pavel Roskin | d2c7f77 | 2011-07-07 18:14:07 -0400 | [diff] [blame] | 2200 | } else |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2201 | ath5k_schedule_rx(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2202 | } else { |
Pavel Roskin | d2c7f77 | 2011-07-07 18:14:07 -0400 | [diff] [blame] | 2203 | if (status & AR5K_INT_SWBA) |
Bob Copeland | 56d2ac7 | 2009-04-15 07:57:33 -0400 | [diff] [blame] | 2204 | tasklet_hi_schedule(&sc->beacontq); |
Pavel Roskin | d2c7f77 | 2011-07-07 18:14:07 -0400 | [diff] [blame] | 2205 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2206 | if (status & AR5K_INT_RXEOL) { |
| 2207 | /* |
| 2208 | * NB: the hardware should re-read the link when |
| 2209 | * RXE bit is written, but it doesn't work at |
| 2210 | * least on older hardware revs. |
| 2211 | */ |
Bruno Randolf | b3f194e | 2010-07-14 10:53:29 +0900 | [diff] [blame] | 2212 | sc->stats.rxeol_intr++; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2213 | } |
| 2214 | if (status & AR5K_INT_TXURN) { |
| 2215 | /* bump tx trigger level */ |
| 2216 | ath5k_hw_update_tx_triglevel(ah, true); |
| 2217 | } |
Nick Kossifidis | 4c674c6 | 2008-10-26 20:40:25 +0200 | [diff] [blame] | 2218 | if (status & (AR5K_INT_RXOK | AR5K_INT_RXERR)) |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2219 | ath5k_schedule_rx(sc); |
Nick Kossifidis | 4c674c6 | 2008-10-26 20:40:25 +0200 | [diff] [blame] | 2220 | if (status & (AR5K_INT_TXOK | AR5K_INT_TXDESC |
| 2221 | | AR5K_INT_TXERR | AR5K_INT_TXEOL)) |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2222 | ath5k_schedule_tx(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2223 | if (status & AR5K_INT_BMISS) { |
Nick Kossifidis | 1e3e6e8 | 2009-02-09 06:15:42 +0200 | [diff] [blame] | 2224 | /* TODO */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2225 | } |
| 2226 | if (status & AR5K_INT_MIB) { |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 2227 | sc->stats.mib_intr++; |
Bruno Randolf | 495391d | 2010-03-25 14:49:36 +0900 | [diff] [blame] | 2228 | ath5k_hw_update_mib_counters(ah); |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 2229 | ath5k_ani_mib_intr(ah); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2230 | } |
Tobias Doerffel | e6a3b61 | 2009-06-09 17:33:27 +0200 | [diff] [blame] | 2231 | if (status & AR5K_INT_GPIO) |
Tobias Doerffel | e6a3b61 | 2009-06-09 17:33:27 +0200 | [diff] [blame] | 2232 | tasklet_schedule(&sc->rf_kill.toggleq); |
Bob Copeland | a6ae071 | 2009-06-09 23:43:11 -0400 | [diff] [blame] | 2233 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2234 | } |
Felix Fietkau | 4cebb34 | 2010-12-02 10:27:21 +0100 | [diff] [blame] | 2235 | |
| 2236 | if (ath5k_get_bus_type(ah) == ATH_AHB) |
| 2237 | break; |
| 2238 | |
Bob Copeland | 2516baa | 2009-04-27 22:18:10 -0400 | [diff] [blame] | 2239 | } while (ath5k_hw_is_intr_pending(ah) && --counter > 0); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2240 | |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2241 | if (sc->rx_pending || sc->tx_pending) |
| 2242 | ath5k_set_current_imask(sc); |
| 2243 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2244 | if (unlikely(!counter)) |
| 2245 | ATH5K_WARN(sc, "too many interrupts, giving up for now\n"); |
| 2246 | |
Bruno Randolf | 6a8a3f6 | 2010-03-25 14:49:19 +0900 | [diff] [blame] | 2247 | ath5k_intr_calibration_poll(ah); |
Nick Kossifidis | 6e220662 | 2009-08-10 03:31:31 +0300 | [diff] [blame] | 2248 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2249 | return IRQ_HANDLED; |
| 2250 | } |
| 2251 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2252 | /* |
| 2253 | * Periodically recalibrate the PHY to account |
| 2254 | * for temperature/environment changes. |
| 2255 | */ |
| 2256 | static void |
Nick Kossifidis | 6e220662 | 2009-08-10 03:31:31 +0300 | [diff] [blame] | 2257 | ath5k_tasklet_calibrate(unsigned long data) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2258 | { |
| 2259 | struct ath5k_softc *sc = (void *)data; |
| 2260 | struct ath5k_hw *ah = sc->ah; |
| 2261 | |
Nick Kossifidis | 6e220662 | 2009-08-10 03:31:31 +0300 | [diff] [blame] | 2262 | /* Only full calibration for now */ |
Bruno Randolf | e65e1d7 | 2010-03-25 14:49:09 +0900 | [diff] [blame] | 2263 | ah->ah_cal_mask |= AR5K_CALIBRATION_FULL; |
Nick Kossifidis | 6e220662 | 2009-08-10 03:31:31 +0300 | [diff] [blame] | 2264 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2265 | ATH5K_DBG(sc, ATH5K_DEBUG_CALIBRATE, "channel %u/%x\n", |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 2266 | ieee80211_frequency_to_channel(sc->curchan->center_freq), |
| 2267 | sc->curchan->hw_value); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2268 | |
Nick Kossifidis | 6f3b414 | 2009-02-09 06:03:41 +0200 | [diff] [blame] | 2269 | if (ath5k_hw_gainf_calibrate(ah) == AR5K_RFGAIN_NEED_CHANGE) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2270 | /* |
| 2271 | * Rfgain is out of bounds, reset the chip |
| 2272 | * to load new gain values. |
| 2273 | */ |
| 2274 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "calibration, resetting\n"); |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2275 | ieee80211_queue_work(sc->hw, &sc->reset_work); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2276 | } |
| 2277 | if (ath5k_hw_phy_calibrate(ah, sc->curchan)) |
| 2278 | ATH5K_ERR(sc, "calibration of channel %u failed\n", |
Luis R. Rodriguez | 400ec45 | 2008-02-03 21:51:49 -0500 | [diff] [blame] | 2279 | ieee80211_frequency_to_channel( |
| 2280 | sc->curchan->center_freq)); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2281 | |
Bruno Randolf | 0e8e02d | 2010-05-19 10:31:05 +0900 | [diff] [blame] | 2282 | /* Noise floor calibration interrupts rx/tx path while I/Q calibration |
Bruno Randolf | 651d937 | 2010-09-17 11:36:46 +0900 | [diff] [blame] | 2283 | * doesn't. |
| 2284 | * TODO: We should stop TX here, so that it doesn't interfere. |
| 2285 | * Note that stopping the queues is not enough to stop TX! */ |
Bruno Randolf | afe8628 | 2010-05-19 10:31:10 +0900 | [diff] [blame] | 2286 | if (time_is_before_eq_jiffies(ah->ah_cal_next_nf)) { |
| 2287 | ah->ah_cal_next_nf = jiffies + |
| 2288 | msecs_to_jiffies(ATH5K_TUNE_CALIBRATION_INTERVAL_NF); |
Bruno Randolf | afe8628 | 2010-05-19 10:31:10 +0900 | [diff] [blame] | 2289 | ath5k_hw_update_noise_floor(ah); |
Bruno Randolf | afe8628 | 2010-05-19 10:31:10 +0900 | [diff] [blame] | 2290 | } |
Nick Kossifidis | 6e220662 | 2009-08-10 03:31:31 +0300 | [diff] [blame] | 2291 | |
Bruno Randolf | e65e1d7 | 2010-03-25 14:49:09 +0900 | [diff] [blame] | 2292 | ah->ah_cal_mask &= ~AR5K_CALIBRATION_FULL; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2293 | } |
| 2294 | |
| 2295 | |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 2296 | static void |
| 2297 | ath5k_tasklet_ani(unsigned long data) |
| 2298 | { |
| 2299 | struct ath5k_softc *sc = (void *)data; |
| 2300 | struct ath5k_hw *ah = sc->ah; |
| 2301 | |
| 2302 | ah->ah_cal_mask |= AR5K_CALIBRATION_ANI; |
| 2303 | ath5k_ani_calibration(ah); |
| 2304 | ah->ah_cal_mask &= ~AR5K_CALIBRATION_ANI; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2305 | } |
| 2306 | |
| 2307 | |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2308 | static void |
| 2309 | ath5k_tx_complete_poll_work(struct work_struct *work) |
| 2310 | { |
| 2311 | struct ath5k_softc *sc = container_of(work, struct ath5k_softc, |
| 2312 | tx_complete_work.work); |
| 2313 | struct ath5k_txq *txq; |
| 2314 | int i; |
| 2315 | bool needreset = false; |
| 2316 | |
Bob Copeland | 599b13a | 2011-01-18 08:06:43 -0500 | [diff] [blame] | 2317 | mutex_lock(&sc->lock); |
| 2318 | |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2319 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) { |
| 2320 | if (sc->txqs[i].setup) { |
| 2321 | txq = &sc->txqs[i]; |
| 2322 | spin_lock_bh(&txq->lock); |
Bruno Randolf | 2341329 | 2010-09-17 11:37:07 +0900 | [diff] [blame] | 2323 | if (txq->txq_len > 1) { |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2324 | if (txq->txq_poll_mark) { |
| 2325 | ATH5K_DBG(sc, ATH5K_DEBUG_XMIT, |
| 2326 | "TX queue stuck %d\n", |
| 2327 | txq->qnum); |
| 2328 | needreset = true; |
Bruno Randolf | 923e5b3 | 2010-09-17 11:37:02 +0900 | [diff] [blame] | 2329 | txq->txq_stuck++; |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2330 | spin_unlock_bh(&txq->lock); |
| 2331 | break; |
| 2332 | } else { |
| 2333 | txq->txq_poll_mark = true; |
| 2334 | } |
| 2335 | } |
| 2336 | spin_unlock_bh(&txq->lock); |
| 2337 | } |
| 2338 | } |
| 2339 | |
| 2340 | if (needreset) { |
| 2341 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 2342 | "TX queues stuck, resetting\n"); |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 2343 | ath5k_reset(sc, NULL, true); |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2344 | } |
| 2345 | |
Bob Copeland | 599b13a | 2011-01-18 08:06:43 -0500 | [diff] [blame] | 2346 | mutex_unlock(&sc->lock); |
| 2347 | |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2348 | ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, |
| 2349 | msecs_to_jiffies(ATH5K_TX_COMPLETE_POLL_INT)); |
| 2350 | } |
| 2351 | |
| 2352 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2353 | /*************************\ |
| 2354 | * Initialization routines * |
| 2355 | \*************************/ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2356 | |
Pavel Roskin | 25380d8 | 2011-07-07 18:13:42 -0400 | [diff] [blame] | 2357 | int __devinit |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2358 | ath5k_init_softc(struct ath5k_softc *sc, const struct ath_bus_ops *bus_ops) |
| 2359 | { |
| 2360 | struct ieee80211_hw *hw = sc->hw; |
| 2361 | struct ath_common *common; |
| 2362 | int ret; |
| 2363 | int csz; |
| 2364 | |
| 2365 | /* Initialize driver private data */ |
| 2366 | SET_IEEE80211_DEV(hw, sc->dev); |
| 2367 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
Nick Kossifidis | b9e61f1 | 2010-12-03 06:12:39 +0200 | [diff] [blame] | 2368 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | |
| 2369 | IEEE80211_HW_SIGNAL_DBM | |
| 2370 | IEEE80211_HW_REPORTS_TX_ACK_STATUS; |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2371 | |
| 2372 | hw->wiphy->interface_modes = |
| 2373 | BIT(NL80211_IFTYPE_AP) | |
| 2374 | BIT(NL80211_IFTYPE_STATION) | |
| 2375 | BIT(NL80211_IFTYPE_ADHOC) | |
| 2376 | BIT(NL80211_IFTYPE_MESH_POINT); |
| 2377 | |
Bruno Randolf | 3de135d | 2010-12-16 11:30:33 +0900 | [diff] [blame] | 2378 | /* both antennas can be configured as RX or TX */ |
| 2379 | hw->wiphy->available_antennas_tx = 0x3; |
| 2380 | hw->wiphy->available_antennas_rx = 0x3; |
| 2381 | |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2382 | hw->extra_tx_headroom = 2; |
| 2383 | hw->channel_change_time = 5000; |
| 2384 | |
| 2385 | /* |
| 2386 | * Mark the device as detached to avoid processing |
| 2387 | * interrupts until setup is complete. |
| 2388 | */ |
| 2389 | __set_bit(ATH_STAT_INVALID, sc->status); |
| 2390 | |
| 2391 | sc->opmode = NL80211_IFTYPE_STATION; |
| 2392 | sc->bintval = 1000; |
| 2393 | mutex_init(&sc->lock); |
| 2394 | spin_lock_init(&sc->rxbuflock); |
| 2395 | spin_lock_init(&sc->txbuflock); |
| 2396 | spin_lock_init(&sc->block); |
Ben Greear | d381f22 | 2011-05-06 15:24:34 -0700 | [diff] [blame] | 2397 | spin_lock_init(&sc->irqlock); |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2398 | |
| 2399 | /* Setup interrupt handler */ |
| 2400 | ret = request_irq(sc->irq, ath5k_intr, IRQF_SHARED, "ath", sc); |
| 2401 | if (ret) { |
| 2402 | ATH5K_ERR(sc, "request_irq failed\n"); |
| 2403 | goto err; |
| 2404 | } |
| 2405 | |
| 2406 | /* If we passed the test, malloc an ath5k_hw struct */ |
| 2407 | sc->ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL); |
| 2408 | if (!sc->ah) { |
| 2409 | ret = -ENOMEM; |
| 2410 | ATH5K_ERR(sc, "out of memory\n"); |
| 2411 | goto err_irq; |
| 2412 | } |
| 2413 | |
| 2414 | sc->ah->ah_sc = sc; |
| 2415 | sc->ah->ah_iobase = sc->iobase; |
| 2416 | common = ath5k_hw_common(sc->ah); |
| 2417 | common->ops = &ath5k_common_ops; |
| 2418 | common->bus_ops = bus_ops; |
| 2419 | common->ah = sc->ah; |
| 2420 | common->hw = hw; |
| 2421 | common->priv = sc; |
| 2422 | |
| 2423 | /* |
| 2424 | * Cache line size is used to size and align various |
| 2425 | * structures used to communicate with the hardware. |
| 2426 | */ |
| 2427 | ath5k_read_cachesize(common, &csz); |
| 2428 | common->cachelsz = csz << 2; /* convert to bytes */ |
| 2429 | |
| 2430 | spin_lock_init(&common->cc_lock); |
| 2431 | |
| 2432 | /* Initialize device */ |
| 2433 | ret = ath5k_hw_init(sc); |
| 2434 | if (ret) |
| 2435 | goto err_free_ah; |
| 2436 | |
| 2437 | /* set up multi-rate retry capabilities */ |
| 2438 | if (sc->ah->ah_version == AR5K_AR5212) { |
| 2439 | hw->max_rates = 4; |
Bruno Randolf | 76a9f6f | 2011-01-28 16:52:11 +0900 | [diff] [blame] | 2440 | hw->max_rate_tries = max(AR5K_INIT_RETRY_SHORT, |
| 2441 | AR5K_INIT_RETRY_LONG); |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2442 | } |
| 2443 | |
| 2444 | hw->vif_data_size = sizeof(struct ath5k_vif); |
| 2445 | |
| 2446 | /* Finish private driver data initialization */ |
| 2447 | ret = ath5k_init(hw); |
| 2448 | if (ret) |
| 2449 | goto err_ah; |
| 2450 | |
| 2451 | ATH5K_INFO(sc, "Atheros AR%s chip found (MAC: 0x%x, PHY: 0x%x)\n", |
| 2452 | ath5k_chip_name(AR5K_VERSION_MAC, sc->ah->ah_mac_srev), |
| 2453 | sc->ah->ah_mac_srev, |
| 2454 | sc->ah->ah_phy_revision); |
| 2455 | |
| 2456 | if (!sc->ah->ah_single_chip) { |
| 2457 | /* Single chip radio (!RF5111) */ |
| 2458 | if (sc->ah->ah_radio_5ghz_revision && |
| 2459 | !sc->ah->ah_radio_2ghz_revision) { |
| 2460 | /* No 5GHz support -> report 2GHz radio */ |
| 2461 | if (!test_bit(AR5K_MODE_11A, |
| 2462 | sc->ah->ah_capabilities.cap_mode)) { |
| 2463 | ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", |
| 2464 | ath5k_chip_name(AR5K_VERSION_RAD, |
| 2465 | sc->ah->ah_radio_5ghz_revision), |
| 2466 | sc->ah->ah_radio_5ghz_revision); |
| 2467 | /* No 2GHz support (5110 and some |
| 2468 | * 5Ghz only cards) -> report 5Ghz radio */ |
| 2469 | } else if (!test_bit(AR5K_MODE_11B, |
| 2470 | sc->ah->ah_capabilities.cap_mode)) { |
| 2471 | ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", |
| 2472 | ath5k_chip_name(AR5K_VERSION_RAD, |
| 2473 | sc->ah->ah_radio_5ghz_revision), |
| 2474 | sc->ah->ah_radio_5ghz_revision); |
| 2475 | /* Multiband radio */ |
| 2476 | } else { |
| 2477 | ATH5K_INFO(sc, "RF%s multiband radio found" |
| 2478 | " (0x%x)\n", |
| 2479 | ath5k_chip_name(AR5K_VERSION_RAD, |
| 2480 | sc->ah->ah_radio_5ghz_revision), |
| 2481 | sc->ah->ah_radio_5ghz_revision); |
| 2482 | } |
| 2483 | } |
| 2484 | /* Multi chip radio (RF5111 - RF2111) -> |
| 2485 | * report both 2GHz/5GHz radios */ |
| 2486 | else if (sc->ah->ah_radio_5ghz_revision && |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 2487 | sc->ah->ah_radio_2ghz_revision) { |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2488 | ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", |
| 2489 | ath5k_chip_name(AR5K_VERSION_RAD, |
| 2490 | sc->ah->ah_radio_5ghz_revision), |
| 2491 | sc->ah->ah_radio_5ghz_revision); |
| 2492 | ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", |
| 2493 | ath5k_chip_name(AR5K_VERSION_RAD, |
| 2494 | sc->ah->ah_radio_2ghz_revision), |
| 2495 | sc->ah->ah_radio_2ghz_revision); |
| 2496 | } |
| 2497 | } |
| 2498 | |
| 2499 | ath5k_debug_init_device(sc); |
| 2500 | |
| 2501 | /* ready to process interrupts */ |
| 2502 | __clear_bit(ATH_STAT_INVALID, sc->status); |
| 2503 | |
| 2504 | return 0; |
| 2505 | err_ah: |
| 2506 | ath5k_hw_deinit(sc->ah); |
| 2507 | err_free_ah: |
| 2508 | kfree(sc->ah); |
| 2509 | err_irq: |
| 2510 | free_irq(sc->irq, sc); |
| 2511 | err: |
| 2512 | return ret; |
| 2513 | } |
| 2514 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2515 | static int |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2516 | ath5k_stop_locked(struct ath5k_softc *sc) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2517 | { |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2518 | struct ath5k_hw *ah = sc->ah; |
Bob Copeland | cec8db2 | 2009-07-04 12:59:51 -0400 | [diff] [blame] | 2519 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2520 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "invalid %u\n", |
| 2521 | test_bit(ATH_STAT_INVALID, sc->status)); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2522 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2523 | /* |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2524 | * Shutdown the hardware and driver: |
| 2525 | * stop output from above |
| 2526 | * disable interrupts |
| 2527 | * turn off timers |
| 2528 | * turn off the radio |
| 2529 | * clear transmit machinery |
| 2530 | * clear receive machinery |
| 2531 | * drain and release tx queues |
| 2532 | * reclaim beacon resources |
| 2533 | * power down hardware |
| 2534 | * |
| 2535 | * Note that some of this work is not possible if the |
| 2536 | * hardware is gone (invalid). |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2537 | */ |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2538 | ieee80211_stop_queues(sc->hw); |
| 2539 | |
| 2540 | if (!test_bit(ATH_STAT_INVALID, sc->status)) { |
| 2541 | ath5k_led_off(sc); |
| 2542 | ath5k_hw_set_imr(ah, 0); |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2543 | synchronize_irq(sc->irq); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2544 | ath5k_rx_stop(sc); |
Nick Kossifidis | 80dac9e | 2010-11-23 20:45:38 +0200 | [diff] [blame] | 2545 | ath5k_hw_dma_stop(ah); |
| 2546 | ath5k_drain_tx_buffs(sc); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2547 | ath5k_hw_phy_disable(ah); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2548 | } |
| 2549 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2550 | return 0; |
| 2551 | } |
| 2552 | |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 2553 | int |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2554 | ath5k_init_hw(struct ath5k_softc *sc) |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2555 | { |
| 2556 | struct ath5k_hw *ah = sc->ah; |
| 2557 | struct ath_common *common = ath5k_hw_common(ah); |
| 2558 | int ret, i; |
| 2559 | |
| 2560 | mutex_lock(&sc->lock); |
| 2561 | |
| 2562 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "mode %d\n", sc->opmode); |
| 2563 | |
| 2564 | /* |
| 2565 | * Stop anything previously setup. This is safe |
| 2566 | * no matter this is the first time through or not. |
| 2567 | */ |
| 2568 | ath5k_stop_locked(sc); |
| 2569 | |
| 2570 | /* |
| 2571 | * The basic interface to setting the hardware in a good |
| 2572 | * state is ``reset''. On return the hardware is known to |
| 2573 | * be powered up and with interrupts disabled. This must |
| 2574 | * be followed by initialization of the appropriate bits |
| 2575 | * and then setup of the interrupt mask. |
| 2576 | */ |
| 2577 | sc->curchan = sc->hw->conf.channel; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2578 | sc->imask = AR5K_INT_RXOK | AR5K_INT_RXERR | AR5K_INT_RXEOL | |
| 2579 | AR5K_INT_RXORN | AR5K_INT_TXDESC | AR5K_INT_TXEOL | |
| 2580 | AR5K_INT_FATAL | AR5K_INT_GLOBAL | AR5K_INT_MIB; |
| 2581 | |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 2582 | ret = ath5k_reset(sc, NULL, false); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2583 | if (ret) |
| 2584 | goto done; |
| 2585 | |
| 2586 | ath5k_rfkill_hw_start(ah); |
| 2587 | |
| 2588 | /* |
| 2589 | * Reset the key cache since some parts do not reset the |
| 2590 | * contents on initial power up or resume from suspend. |
| 2591 | */ |
| 2592 | for (i = 0; i < common->keymax; i++) |
| 2593 | ath_hw_keyreset(common, (u16) i); |
| 2594 | |
Nick Kossifidis | 61cde03 | 2010-11-23 21:12:23 +0200 | [diff] [blame] | 2595 | /* Use higher rates for acks instead of base |
| 2596 | * rate */ |
| 2597 | ah->ah_ack_bitrate_high = true; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 2598 | |
| 2599 | for (i = 0; i < ARRAY_SIZE(sc->bslot); i++) |
| 2600 | sc->bslot[i] = NULL; |
| 2601 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2602 | ret = 0; |
| 2603 | done: |
| 2604 | mmiowb(); |
| 2605 | mutex_unlock(&sc->lock); |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2606 | |
| 2607 | ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, |
| 2608 | msecs_to_jiffies(ATH5K_TX_COMPLETE_POLL_INT)); |
| 2609 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2610 | return ret; |
| 2611 | } |
| 2612 | |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2613 | static void ath5k_stop_tasklets(struct ath5k_softc *sc) |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2614 | { |
Felix Fietkau | c266c71 | 2011-04-10 18:32:19 +0200 | [diff] [blame] | 2615 | sc->rx_pending = false; |
| 2616 | sc->tx_pending = false; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2617 | tasklet_kill(&sc->rxtq); |
| 2618 | tasklet_kill(&sc->txtq); |
| 2619 | tasklet_kill(&sc->calib); |
| 2620 | tasklet_kill(&sc->beacontq); |
| 2621 | tasklet_kill(&sc->ani_tasklet); |
| 2622 | } |
| 2623 | |
| 2624 | /* |
| 2625 | * Stop the device, grabbing the top-level lock to protect |
| 2626 | * against concurrent entry through ath5k_init (which can happen |
| 2627 | * if another thread does a system call and the thread doing the |
| 2628 | * stop is preempted). |
| 2629 | */ |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 2630 | int |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2631 | ath5k_stop_hw(struct ath5k_softc *sc) |
| 2632 | { |
| 2633 | int ret; |
| 2634 | |
| 2635 | mutex_lock(&sc->lock); |
| 2636 | ret = ath5k_stop_locked(sc); |
| 2637 | if (ret == 0 && !test_bit(ATH_STAT_INVALID, sc->status)) { |
| 2638 | /* |
| 2639 | * Don't set the card in full sleep mode! |
| 2640 | * |
| 2641 | * a) When the device is in this state it must be carefully |
| 2642 | * woken up or references to registers in the PCI clock |
| 2643 | * domain may freeze the bus (and system). This varies |
| 2644 | * by chip and is mostly an issue with newer parts |
| 2645 | * (madwifi sources mentioned srev >= 0x78) that go to |
| 2646 | * sleep more quickly. |
| 2647 | * |
| 2648 | * b) On older chips full sleep results a weird behaviour |
| 2649 | * during wakeup. I tested various cards with srev < 0x78 |
| 2650 | * and they don't wake up after module reload, a second |
| 2651 | * module reload is needed to bring the card up again. |
| 2652 | * |
| 2653 | * Until we figure out what's going on don't enable |
| 2654 | * full chip reset on any chip (this is what Legacy HAL |
| 2655 | * and Sam's HAL do anyway). Instead Perform a full reset |
| 2656 | * on the device (same as initial state after attach) and |
| 2657 | * leave it idle (keep MAC/BB on warm reset) */ |
| 2658 | ret = ath5k_hw_on_hold(sc->ah); |
| 2659 | |
| 2660 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, |
| 2661 | "putting device to sleep\n"); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2662 | } |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2663 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2664 | mmiowb(); |
| 2665 | mutex_unlock(&sc->lock); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2666 | |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2667 | ath5k_stop_tasklets(sc); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2668 | |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2669 | cancel_delayed_work_sync(&sc->tx_complete_work); |
| 2670 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2671 | ath5k_rfkill_hw_stop(sc->ah); |
| 2672 | |
| 2673 | return ret; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2674 | } |
| 2675 | |
Bob Copeland | 209d889 | 2009-05-07 08:09:08 -0400 | [diff] [blame] | 2676 | /* |
| 2677 | * Reset the hardware. If chan is not NULL, then also pause rx/tx |
| 2678 | * and change to the given channel. |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2679 | * |
| 2680 | * This should be called with sc->lock. |
Bob Copeland | 209d889 | 2009-05-07 08:09:08 -0400 | [diff] [blame] | 2681 | */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2682 | static int |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 2683 | ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan, |
| 2684 | bool skip_pcu) |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2685 | { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2686 | struct ath5k_hw *ah = sc->ah; |
Bruno Randolf | f15a4bb | 2010-12-16 16:22:20 +0900 | [diff] [blame] | 2687 | struct ath_common *common = ath5k_hw_common(ah); |
Nick Kossifidis | 344b54b | 2010-12-03 06:07:13 +0200 | [diff] [blame] | 2688 | int ret, ani_mode; |
Nick Kossifidis | a99168e | 2011-06-02 03:09:48 +0300 | [diff] [blame] | 2689 | bool fast; |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2690 | |
| 2691 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n"); |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2692 | |
Bob Copeland | 450464d | 2010-07-13 11:32:41 -0400 | [diff] [blame] | 2693 | ath5k_hw_set_imr(ah, 0); |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2694 | synchronize_irq(sc->irq); |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2695 | ath5k_stop_tasklets(sc); |
Bob Copeland | 450464d | 2010-07-13 11:32:41 -0400 | [diff] [blame] | 2696 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2697 | /* Save ani mode and disable ANI during |
Nick Kossifidis | 344b54b | 2010-12-03 06:07:13 +0200 | [diff] [blame] | 2698 | * reset. If we don't we might get false |
| 2699 | * PHY error interrupts. */ |
| 2700 | ani_mode = ah->ah_sc->ani_state.ani_mode; |
| 2701 | ath5k_ani_init(ah, ATH5K_ANI_MODE_OFF); |
| 2702 | |
Nick Kossifidis | 19252ec | 2010-12-03 06:05:19 +0200 | [diff] [blame] | 2703 | /* We are going to empty hw queues |
| 2704 | * so we should also free any remaining |
| 2705 | * tx buffers */ |
| 2706 | ath5k_drain_tx_buffs(sc); |
Bruno Randolf | 930a762 | 2011-01-19 18:21:13 +0900 | [diff] [blame] | 2707 | if (chan) |
Bob Copeland | 209d889 | 2009-05-07 08:09:08 -0400 | [diff] [blame] | 2708 | sc->curchan = chan; |
Nick Kossifidis | a99168e | 2011-06-02 03:09:48 +0300 | [diff] [blame] | 2709 | |
| 2710 | fast = ((chan != NULL) && modparam_fastchanswitch) ? 1 : 0; |
| 2711 | |
Pavel Roskin | e4bbf2f | 2011-07-07 18:14:13 -0400 | [diff] [blame^] | 2712 | ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, fast, skip_pcu); |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2713 | if (ret) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2714 | ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret); |
| 2715 | goto err; |
| 2716 | } |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2717 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2718 | ret = ath5k_rx_start(sc); |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2719 | if (ret) { |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2720 | ATH5K_ERR(sc, "can't start recv logic\n"); |
| 2721 | goto err; |
| 2722 | } |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2723 | |
Nick Kossifidis | 344b54b | 2010-12-03 06:07:13 +0200 | [diff] [blame] | 2724 | ath5k_ani_init(ah, ani_mode); |
Bruno Randolf | 2111ac0 | 2010-04-02 18:44:08 +0900 | [diff] [blame] | 2725 | |
Bruno Randolf | ac55952 | 2010-05-19 10:30:55 +0900 | [diff] [blame] | 2726 | ah->ah_cal_next_full = jiffies; |
| 2727 | ah->ah_cal_next_ani = jiffies; |
Bruno Randolf | afe8628 | 2010-05-19 10:31:10 +0900 | [diff] [blame] | 2728 | ah->ah_cal_next_nf = jiffies; |
Bruno Randolf | 5dcc03f | 2010-12-02 19:12:31 +0900 | [diff] [blame] | 2729 | ewma_init(&ah->ah_beacon_rssi_avg, 1024, 8); |
Bruno Randolf | afe8628 | 2010-05-19 10:31:10 +0900 | [diff] [blame] | 2730 | |
Bruno Randolf | f15a4bb | 2010-12-16 16:22:20 +0900 | [diff] [blame] | 2731 | /* clear survey data and cycle counters */ |
| 2732 | memset(&sc->survey, 0, sizeof(sc->survey)); |
Bob Copeland | bb00755 | 2010-12-26 12:10:05 -0500 | [diff] [blame] | 2733 | spin_lock_bh(&common->cc_lock); |
Bruno Randolf | f15a4bb | 2010-12-16 16:22:20 +0900 | [diff] [blame] | 2734 | ath_hw_cycle_counters_update(common); |
| 2735 | memset(&common->cc_survey, 0, sizeof(common->cc_survey)); |
| 2736 | memset(&common->cc_ani, 0, sizeof(common->cc_ani)); |
Bob Copeland | bb00755 | 2010-12-26 12:10:05 -0500 | [diff] [blame] | 2737 | spin_unlock_bh(&common->cc_lock); |
Bruno Randolf | f15a4bb | 2010-12-16 16:22:20 +0900 | [diff] [blame] | 2738 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2739 | /* |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2740 | * Change channels and update the h/w rate map if we're switching; |
| 2741 | * e.g. 11a to 11b/g. |
| 2742 | * |
| 2743 | * We may be doing a reset in response to an ioctl that changes the |
| 2744 | * channel so update any state that might change as a result. |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2745 | * |
| 2746 | * XXX needed? |
| 2747 | */ |
| 2748 | /* ath5k_chan_change(sc, c); */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2749 | |
Jiri Slaby | d7dc100 | 2008-07-23 13:17:35 +0200 | [diff] [blame] | 2750 | ath5k_beacon_config(sc); |
| 2751 | /* intrs are enabled by ath5k_beacon_config */ |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2752 | |
Bruno Randolf | 397f385 | 2010-05-19 10:30:49 +0900 | [diff] [blame] | 2753 | ieee80211_wake_queues(sc->hw); |
| 2754 | |
Jiri Slaby | fa1c114 | 2007-08-12 17:33:16 +0200 | [diff] [blame] | 2755 | return 0; |
| 2756 | err: |
| 2757 | return ret; |
| 2758 | } |
| 2759 | |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2760 | static void ath5k_reset_work(struct work_struct *work) |
| 2761 | { |
| 2762 | struct ath5k_softc *sc = container_of(work, struct ath5k_softc, |
| 2763 | reset_work); |
| 2764 | |
| 2765 | mutex_lock(&sc->lock); |
Nick Kossifidis | 8aec7af | 2010-11-23 21:39:28 +0200 | [diff] [blame] | 2766 | ath5k_reset(sc, NULL, true); |
Bob Copeland | 5faaff7 | 2010-07-13 11:32:40 -0400 | [diff] [blame] | 2767 | mutex_unlock(&sc->lock); |
| 2768 | } |
| 2769 | |
Pavel Roskin | 25380d8 | 2011-07-07 18:13:42 -0400 | [diff] [blame] | 2770 | static int __devinit |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2771 | ath5k_init(struct ieee80211_hw *hw) |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2772 | { |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2773 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2774 | struct ath5k_softc *sc = hw->priv; |
| 2775 | struct ath5k_hw *ah = sc->ah; |
| 2776 | struct ath_regulatory *regulatory = ath5k_hw_regulatory(ah); |
Bruno Randolf | 925e0b0 | 2010-09-17 11:36:35 +0900 | [diff] [blame] | 2777 | struct ath5k_txq *txq; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2778 | u8 mac[ETH_ALEN] = {}; |
| 2779 | int ret; |
| 2780 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2781 | |
| 2782 | /* |
| 2783 | * Check if the MAC has multi-rate retry support. |
| 2784 | * We do this by trying to setup a fake extended |
| 2785 | * descriptor. MACs that don't have support will |
| 2786 | * return false w/o doing anything. MACs that do |
| 2787 | * support it will return true w/o doing anything. |
| 2788 | */ |
| 2789 | ret = ath5k_hw_setup_mrr_tx_desc(ah, NULL, 0, 0, 0, 0, 0, 0); |
| 2790 | |
| 2791 | if (ret < 0) |
| 2792 | goto err; |
| 2793 | if (ret > 0) |
| 2794 | __set_bit(ATH_STAT_MRRETRY, sc->status); |
| 2795 | |
| 2796 | /* |
| 2797 | * Collect the channel list. The 802.11 layer |
| 2798 | * is resposible for filtering this list based |
| 2799 | * on settings like the phy mode and regulatory |
| 2800 | * domain restrictions. |
| 2801 | */ |
| 2802 | ret = ath5k_setup_bands(hw); |
| 2803 | if (ret) { |
| 2804 | ATH5K_ERR(sc, "can't get channels\n"); |
| 2805 | goto err; |
| 2806 | } |
| 2807 | |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2808 | /* |
| 2809 | * Allocate tx+rx descriptors and populate the lists. |
| 2810 | */ |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2811 | ret = ath5k_desc_alloc(sc); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2812 | if (ret) { |
| 2813 | ATH5K_ERR(sc, "can't allocate descriptors\n"); |
| 2814 | goto err; |
| 2815 | } |
| 2816 | |
| 2817 | /* |
| 2818 | * Allocate hardware transmit queues: one queue for |
| 2819 | * beacon frames and one data queue for each QoS |
| 2820 | * priority. Note that hw functions handle resetting |
| 2821 | * these queues at the needed time. |
| 2822 | */ |
| 2823 | ret = ath5k_beaconq_setup(ah); |
| 2824 | if (ret < 0) { |
| 2825 | ATH5K_ERR(sc, "can't setup a beacon xmit queue\n"); |
| 2826 | goto err_desc; |
| 2827 | } |
| 2828 | sc->bhalq = ret; |
| 2829 | sc->cabq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_CAB, 0); |
| 2830 | if (IS_ERR(sc->cabq)) { |
| 2831 | ATH5K_ERR(sc, "can't setup cab queue\n"); |
| 2832 | ret = PTR_ERR(sc->cabq); |
| 2833 | goto err_bhal; |
| 2834 | } |
| 2835 | |
Bruno Randolf | 22d8d9f | 2010-12-07 11:08:12 +0900 | [diff] [blame] | 2836 | /* 5211 and 5212 usually support 10 queues but we better rely on the |
| 2837 | * capability information */ |
| 2838 | if (ah->ah_capabilities.cap_queues.q_tx_num >= 6) { |
| 2839 | /* This order matches mac80211's queue priority, so we can |
| 2840 | * directly use the mac80211 queue number without any mapping */ |
| 2841 | txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_VO); |
| 2842 | if (IS_ERR(txq)) { |
| 2843 | ATH5K_ERR(sc, "can't setup xmit queue\n"); |
| 2844 | ret = PTR_ERR(txq); |
| 2845 | goto err_queues; |
| 2846 | } |
| 2847 | txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_VI); |
| 2848 | if (IS_ERR(txq)) { |
| 2849 | ATH5K_ERR(sc, "can't setup xmit queue\n"); |
| 2850 | ret = PTR_ERR(txq); |
| 2851 | goto err_queues; |
| 2852 | } |
| 2853 | txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_BE); |
| 2854 | if (IS_ERR(txq)) { |
| 2855 | ATH5K_ERR(sc, "can't setup xmit queue\n"); |
| 2856 | ret = PTR_ERR(txq); |
| 2857 | goto err_queues; |
| 2858 | } |
| 2859 | txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_BK); |
| 2860 | if (IS_ERR(txq)) { |
| 2861 | ATH5K_ERR(sc, "can't setup xmit queue\n"); |
| 2862 | ret = PTR_ERR(txq); |
| 2863 | goto err_queues; |
| 2864 | } |
| 2865 | hw->queues = 4; |
| 2866 | } else { |
| 2867 | /* older hardware (5210) can only support one data queue */ |
| 2868 | txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_BE); |
| 2869 | if (IS_ERR(txq)) { |
| 2870 | ATH5K_ERR(sc, "can't setup xmit queue\n"); |
| 2871 | ret = PTR_ERR(txq); |
| 2872 | goto err_queues; |
| 2873 | } |
| 2874 | hw->queues = 1; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | tasklet_init(&sc->rxtq, ath5k_tasklet_rx, (unsigned long)sc); |
| 2878 | tasklet_init(&sc->txtq, ath5k_tasklet_tx, (unsigned long)sc); |
| 2879 | tasklet_init(&sc->calib, ath5k_tasklet_calibrate, (unsigned long)sc); |
| 2880 | tasklet_init(&sc->beacontq, ath5k_tasklet_beacon, (unsigned long)sc); |
| 2881 | tasklet_init(&sc->ani_tasklet, ath5k_tasklet_ani, (unsigned long)sc); |
| 2882 | |
| 2883 | INIT_WORK(&sc->reset_work, ath5k_reset_work); |
Bruno Randolf | 4edd761 | 2010-09-17 11:36:56 +0900 | [diff] [blame] | 2884 | INIT_DELAYED_WORK(&sc->tx_complete_work, ath5k_tx_complete_poll_work); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2885 | |
Felix Fietkau | fa9bfd6 | 2011-04-13 21:56:44 +0200 | [diff] [blame] | 2886 | ret = ath5k_hw_common(ah)->bus_ops->eeprom_read_mac(ah, mac); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2887 | if (ret) { |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2888 | ATH5K_ERR(sc, "unable to read address from EEPROM\n"); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2889 | goto err_queues; |
| 2890 | } |
| 2891 | |
| 2892 | SET_IEEE80211_PERM_ADDR(hw, mac); |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 2893 | memcpy(&sc->lladdr, mac, ETH_ALEN); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2894 | /* All MAC address bits matter for ACKs */ |
Ben Greear | 62c58fb | 2010-10-08 12:01:15 -0700 | [diff] [blame] | 2895 | ath5k_update_bssid_mask_and_opmode(sc, NULL); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2896 | |
| 2897 | regulatory->current_rd = ah->ah_capabilities.cap_eeprom.ee_regdomain; |
| 2898 | ret = ath_regd_init(regulatory, hw->wiphy, ath5k_reg_notifier); |
| 2899 | if (ret) { |
| 2900 | ATH5K_ERR(sc, "can't initialize regulatory system\n"); |
| 2901 | goto err_queues; |
| 2902 | } |
| 2903 | |
| 2904 | ret = ieee80211_register_hw(hw); |
| 2905 | if (ret) { |
| 2906 | ATH5K_ERR(sc, "can't register ieee80211 hw\n"); |
| 2907 | goto err_queues; |
| 2908 | } |
| 2909 | |
| 2910 | if (!ath_is_world_regd(regulatory)) |
| 2911 | regulatory_hint(hw->wiphy, regulatory->alpha2); |
| 2912 | |
| 2913 | ath5k_init_leds(sc); |
| 2914 | |
| 2915 | ath5k_sysfs_register(sc); |
| 2916 | |
| 2917 | return 0; |
| 2918 | err_queues: |
| 2919 | ath5k_txq_release(sc); |
| 2920 | err_bhal: |
| 2921 | ath5k_hw_release_tx_queue(ah, sc->bhalq); |
| 2922 | err_desc: |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2923 | ath5k_desc_free(sc); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2924 | err: |
| 2925 | return ret; |
| 2926 | } |
| 2927 | |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2928 | void |
| 2929 | ath5k_deinit_softc(struct ath5k_softc *sc) |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2930 | { |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2931 | struct ieee80211_hw *hw = sc->hw; |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2932 | |
| 2933 | /* |
| 2934 | * NB: the order of these is important: |
| 2935 | * o call the 802.11 layer before detaching ath5k_hw to |
| 2936 | * ensure callbacks into the driver to delete global |
| 2937 | * key cache entries can be handled |
| 2938 | * o reclaim the tx queue data structures after calling |
| 2939 | * the 802.11 layer as we'll get called back to reclaim |
| 2940 | * node state and potentially want to use them |
| 2941 | * o to cleanup the tx queues the hal is called, so detach |
| 2942 | * it last |
| 2943 | * XXX: ??? detach ath5k_hw ??? |
| 2944 | * Other than that, it's straightforward... |
| 2945 | */ |
| 2946 | ieee80211_unregister_hw(hw); |
Felix Fietkau | aeae4ac | 2010-12-02 10:26:51 +0100 | [diff] [blame] | 2947 | ath5k_desc_free(sc); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2948 | ath5k_txq_release(sc); |
| 2949 | ath5k_hw_release_tx_queue(sc->ah, sc->bhalq); |
| 2950 | ath5k_unregister_leds(sc); |
| 2951 | |
| 2952 | ath5k_sysfs_unregister(sc); |
| 2953 | /* |
| 2954 | * NB: can't reclaim these until after ieee80211_ifdetach |
| 2955 | * returns because we'll get called back to reclaim node |
| 2956 | * state and potentially want to use them. |
| 2957 | */ |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2958 | ath5k_hw_deinit(sc->ah); |
John W. Linville | 0e8d160 | 2011-06-17 16:41:30 -0400 | [diff] [blame] | 2959 | kfree(sc->ah); |
Felix Fietkau | 132b1c3 | 2010-12-02 10:26:56 +0100 | [diff] [blame] | 2960 | free_irq(sc->irq, sc); |
Bob Copeland | 8a63fac | 2010-09-17 12:45:07 +0900 | [diff] [blame] | 2961 | } |
| 2962 | |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 2963 | bool |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2964 | ath5k_any_vif_assoc(struct ath5k_softc *sc) |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 2965 | { |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 2966 | struct ath5k_vif_iter_data iter_data; |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 2967 | iter_data.hw_macaddr = NULL; |
| 2968 | iter_data.any_assoc = false; |
| 2969 | iter_data.need_set_hw_addr = false; |
| 2970 | iter_data.found_active = true; |
| 2971 | |
Ben Greear | e4b0b32 | 2011-03-03 14:39:05 -0800 | [diff] [blame] | 2972 | ieee80211_iterate_active_interfaces_atomic(sc->hw, ath5k_vif_iter, |
Ben Greear | b1ae1ed | 2010-09-30 12:22:58 -0700 | [diff] [blame] | 2973 | &iter_data); |
| 2974 | return iter_data.any_assoc; |
| 2975 | } |
| 2976 | |
Bruno Randolf | cd2c548 | 2010-12-22 19:20:32 +0900 | [diff] [blame] | 2977 | void |
Pavel Roskin | f5cbc8b | 2011-06-15 18:03:22 -0400 | [diff] [blame] | 2978 | ath5k_set_beacon_filter(struct ieee80211_hw *hw, bool enable) |
Martin Xu | 02969b3 | 2008-11-24 10:49:27 +0800 | [diff] [blame] | 2979 | { |
| 2980 | struct ath5k_softc *sc = hw->priv; |
| 2981 | struct ath5k_hw *ah = sc->ah; |
| 2982 | u32 rfilt; |
| 2983 | rfilt = ath5k_hw_get_rx_filter(ah); |
| 2984 | if (enable) |
| 2985 | rfilt |= AR5K_RX_FILTER_BEACON; |
| 2986 | else |
| 2987 | rfilt &= ~AR5K_RX_FILTER_BEACON; |
| 2988 | ath5k_hw_set_rx_filter(ah, rfilt); |
| 2989 | sc->filter_flags = rfilt; |
| 2990 | } |