Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
Ivo van Doorn | 811aa9c | 2008-02-03 15:42:53 +0100 | [diff] [blame] | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 3 | <http://rt2x00.serialmonkey.com> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00lib |
| 23 | Abstract: rt2x00 generic device routines. |
| 24 | */ |
| 25 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include "rt2x00.h" |
| 30 | #include "rt2x00lib.h" |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 31 | #include "rt2x00dump.h" |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 32 | |
| 33 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 34 | * Link tuning handlers |
| 35 | */ |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 36 | void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 37 | { |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 38 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 39 | return; |
| 40 | |
| 41 | /* |
| 42 | * Reset link information. |
| 43 | * Both the currently active vgc level as well as |
| 44 | * the link tuner counter should be reset. Resetting |
| 45 | * the counter is important for devices where the |
| 46 | * device should only perform link tuning during the |
| 47 | * first minute after being enabled. |
| 48 | */ |
Ivo van Doorn | 8de8c51 | 2007-10-13 16:26:32 +0200 | [diff] [blame] | 49 | rt2x00dev->link.count = 0; |
| 50 | rt2x00dev->link.vgc_level = 0; |
| 51 | |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 52 | /* |
| 53 | * Reset the link tuner. |
| 54 | */ |
| 55 | rt2x00dev->ops->lib->reset_tuner(rt2x00dev); |
| 56 | } |
| 57 | |
| 58 | static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev) |
| 59 | { |
| 60 | /* |
| 61 | * Clear all (possibly) pre-existing quality statistics. |
| 62 | */ |
Ivo van Doorn | 8de8c51 | 2007-10-13 16:26:32 +0200 | [diff] [blame] | 63 | memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual)); |
| 64 | |
| 65 | /* |
| 66 | * The RX and TX percentage should start at 50% |
| 67 | * this will assure we will get at least get some |
| 68 | * decent value when the link tuner starts. |
| 69 | * The value will be dropped and overwritten with |
| 70 | * the correct (measured )value anyway during the |
| 71 | * first run of the link tuner. |
| 72 | */ |
| 73 | rt2x00dev->link.qual.rx_percentage = 50; |
| 74 | rt2x00dev->link.qual.tx_percentage = 50; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 75 | |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 76 | rt2x00lib_reset_link_tuner(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 77 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 78 | queue_delayed_work(rt2x00dev->workqueue, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 79 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); |
| 80 | } |
| 81 | |
| 82 | static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev) |
| 83 | { |
Ivo van Doorn | 3e30968 | 2007-09-25 20:56:36 +0200 | [diff] [blame] | 84 | cancel_delayed_work_sync(&rt2x00dev->link.work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 85 | } |
| 86 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 87 | /* |
| 88 | * Radio control handlers. |
| 89 | */ |
| 90 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) |
| 91 | { |
| 92 | int status; |
| 93 | |
| 94 | /* |
| 95 | * Don't enable the radio twice. |
| 96 | * And check if the hardware button has been disabled. |
| 97 | */ |
| 98 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || |
Ivo van Doorn | 81873e9 | 2007-10-06 14:14:06 +0200 | [diff] [blame] | 99 | test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 100 | return 0; |
| 101 | |
| 102 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 103 | * Initialize all data queues. |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 104 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 105 | rt2x00queue_init_rx(rt2x00dev); |
| 106 | rt2x00queue_init_tx(rt2x00dev); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 107 | |
| 108 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 109 | * Enable radio. |
| 110 | */ |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 111 | status = |
| 112 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 113 | if (status) |
| 114 | return status; |
| 115 | |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 116 | rt2x00leds_led_radio(rt2x00dev, true); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 117 | rt2x00led_led_activity(rt2x00dev, true); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 118 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 119 | __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags); |
| 120 | |
| 121 | /* |
| 122 | * Enable RX. |
| 123 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 124 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 125 | |
| 126 | /* |
| 127 | * Start the TX queues. |
| 128 | */ |
| 129 | ieee80211_start_queues(rt2x00dev->hw); |
| 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 135 | { |
| 136 | if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 137 | return; |
| 138 | |
| 139 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 140 | * Stop the TX queues. |
| 141 | */ |
| 142 | ieee80211_stop_queues(rt2x00dev->hw); |
| 143 | |
| 144 | /* |
| 145 | * Disable RX. |
| 146 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 147 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 148 | |
| 149 | /* |
| 150 | * Disable radio. |
| 151 | */ |
| 152 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 153 | rt2x00led_led_activity(rt2x00dev, false); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 154 | rt2x00leds_led_radio(rt2x00dev, false); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 155 | } |
| 156 | |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 157 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 158 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 159 | /* |
| 160 | * When we are disabling the RX, we should also stop the link tuner. |
| 161 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 162 | if (state == STATE_RADIO_RX_OFF) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 163 | rt2x00lib_stop_link_tuner(rt2x00dev); |
| 164 | |
| 165 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); |
| 166 | |
| 167 | /* |
| 168 | * When we are enabling the RX, we should also start the link tuner. |
| 169 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 170 | if (state == STATE_RADIO_RX_ON && |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 171 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 172 | rt2x00lib_start_link_tuner(rt2x00dev); |
| 173 | } |
| 174 | |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 175 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
| 176 | { |
| 177 | enum antenna rx = rt2x00dev->link.ant.active.rx; |
| 178 | enum antenna tx = rt2x00dev->link.ant.active.tx; |
| 179 | int sample_a = |
| 180 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); |
| 181 | int sample_b = |
| 182 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); |
| 183 | |
| 184 | /* |
| 185 | * We are done sampling. Now we should evaluate the results. |
| 186 | */ |
| 187 | rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE; |
| 188 | |
| 189 | /* |
| 190 | * During the last period we have sampled the RSSI |
| 191 | * from both antenna's. It now is time to determine |
| 192 | * which antenna demonstrated the best performance. |
| 193 | * When we are already on the antenna with the best |
| 194 | * performance, then there really is nothing for us |
| 195 | * left to do. |
| 196 | */ |
| 197 | if (sample_a == sample_b) |
| 198 | return; |
| 199 | |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 200 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
| 201 | rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 202 | |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 203 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
| 204 | tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 205 | |
| 206 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); |
| 207 | } |
| 208 | |
| 209 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) |
| 210 | { |
| 211 | enum antenna rx = rt2x00dev->link.ant.active.rx; |
| 212 | enum antenna tx = rt2x00dev->link.ant.active.tx; |
| 213 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); |
| 214 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); |
| 215 | |
| 216 | /* |
| 217 | * Legacy driver indicates that we should swap antenna's |
| 218 | * when the difference in RSSI is greater that 5. This |
| 219 | * also should be done when the RSSI was actually better |
| 220 | * then the previous sample. |
| 221 | * When the difference exceeds the threshold we should |
| 222 | * sample the rssi from the other antenna to make a valid |
| 223 | * comparison between the 2 antennas. |
| 224 | */ |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 225 | if (abs(rssi_curr - rssi_old) < 5) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 226 | return; |
| 227 | |
| 228 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; |
| 229 | |
| 230 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
| 231 | rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
| 232 | |
| 233 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
| 234 | tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
| 235 | |
| 236 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); |
| 237 | } |
| 238 | |
| 239 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) |
| 240 | { |
| 241 | /* |
| 242 | * Determine if software diversity is enabled for |
| 243 | * either the TX or RX antenna (or both). |
| 244 | * Always perform this check since within the link |
| 245 | * tuner interval the configuration might have changed. |
| 246 | */ |
| 247 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; |
| 248 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; |
| 249 | |
| 250 | if (rt2x00dev->hw->conf.antenna_sel_rx == 0 && |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 251 | rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 252 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
| 253 | if (rt2x00dev->hw->conf.antenna_sel_tx == 0 && |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 254 | rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 255 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
| 256 | |
| 257 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && |
| 258 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 259 | rt2x00dev->link.ant.flags = 0; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 260 | return; |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * If we have only sampled the data over the last period |
| 265 | * we should now harvest the data. Otherwise just evaluate |
| 266 | * the data. The latter should only be performed once |
| 267 | * every 2 seconds. |
| 268 | */ |
| 269 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) |
| 270 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); |
| 271 | else if (rt2x00dev->link.count & 1) |
| 272 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); |
| 273 | } |
| 274 | |
| 275 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) |
| 276 | { |
| 277 | int avg_rssi = rssi; |
| 278 | |
| 279 | /* |
| 280 | * Update global RSSI |
| 281 | */ |
| 282 | if (link->qual.avg_rssi) |
| 283 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); |
| 284 | link->qual.avg_rssi = avg_rssi; |
| 285 | |
| 286 | /* |
| 287 | * Update antenna RSSI |
| 288 | */ |
| 289 | if (link->ant.rssi_ant) |
| 290 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); |
| 291 | link->ant.rssi_ant = rssi; |
| 292 | } |
| 293 | |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 294 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 295 | { |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 296 | if (qual->rx_failed || qual->rx_success) |
| 297 | qual->rx_percentage = |
| 298 | (qual->rx_success * 100) / |
| 299 | (qual->rx_failed + qual->rx_success); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 300 | else |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 301 | qual->rx_percentage = 50; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 302 | |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 303 | if (qual->tx_failed || qual->tx_success) |
| 304 | qual->tx_percentage = |
| 305 | (qual->tx_success * 100) / |
| 306 | (qual->tx_failed + qual->tx_success); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 307 | else |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 308 | qual->tx_percentage = 50; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 309 | |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 310 | qual->rx_success = 0; |
| 311 | qual->rx_failed = 0; |
| 312 | qual->tx_success = 0; |
| 313 | qual->tx_failed = 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, |
| 317 | int rssi) |
| 318 | { |
| 319 | int rssi_percentage = 0; |
| 320 | int signal; |
| 321 | |
| 322 | /* |
| 323 | * We need a positive value for the RSSI. |
| 324 | */ |
| 325 | if (rssi < 0) |
| 326 | rssi += rt2x00dev->rssi_offset; |
| 327 | |
| 328 | /* |
| 329 | * Calculate the different percentages, |
| 330 | * which will be used for the signal. |
| 331 | */ |
| 332 | if (rt2x00dev->rssi_offset) |
| 333 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; |
| 334 | |
| 335 | /* |
| 336 | * Add the individual percentages and use the WEIGHT |
| 337 | * defines to calculate the current link signal. |
| 338 | */ |
| 339 | signal = ((WEIGHT_RSSI * rssi_percentage) + |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 340 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
| 341 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 342 | |
| 343 | return (signal > 100) ? 100 : signal; |
| 344 | } |
| 345 | |
| 346 | static void rt2x00lib_link_tuner(struct work_struct *work) |
| 347 | { |
| 348 | struct rt2x00_dev *rt2x00dev = |
| 349 | container_of(work, struct rt2x00_dev, link.work.work); |
| 350 | |
| 351 | /* |
Ivo van Doorn | 25ab002 | 2007-09-25 20:57:04 +0200 | [diff] [blame] | 352 | * When the radio is shutting down we should |
| 353 | * immediately cease all link tuning. |
| 354 | */ |
| 355 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 356 | return; |
| 357 | |
| 358 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 359 | * Update statistics. |
| 360 | */ |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 361 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 362 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 363 | rt2x00dev->link.qual.rx_failed; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 364 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 365 | /* |
| 366 | * Only perform the link tuning when Link tuning |
| 367 | * has been enabled (This could have been disabled from the EEPROM). |
| 368 | */ |
| 369 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) |
| 370 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); |
| 371 | |
| 372 | /* |
Ivo van Doorn | 725d99d | 2007-09-25 20:53:20 +0200 | [diff] [blame] | 373 | * Precalculate a portion of the link signal which is |
| 374 | * in based on the tx/rx success/failure counters. |
| 375 | */ |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 376 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
Ivo van Doorn | 725d99d | 2007-09-25 20:53:20 +0200 | [diff] [blame] | 377 | |
| 378 | /* |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 379 | * Send a signal to the led to update the led signal strength. |
| 380 | */ |
| 381 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); |
| 382 | |
| 383 | /* |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 384 | * Evaluate antenna setup, make this the last step since this could |
| 385 | * possibly reset some statistics. |
| 386 | */ |
| 387 | rt2x00lib_evaluate_antenna(rt2x00dev); |
| 388 | |
| 389 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 390 | * Increase tuner counter, and reschedule the next link tuner run. |
| 391 | */ |
| 392 | rt2x00dev->link.count++; |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 393 | queue_delayed_work(rt2x00dev->workqueue, |
| 394 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 395 | } |
| 396 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 397 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
| 398 | { |
| 399 | struct rt2x00_dev *rt2x00dev = |
| 400 | container_of(work, struct rt2x00_dev, filter_work); |
Ivo van Doorn | 5886d0d | 2007-10-06 14:13:38 +0200 | [diff] [blame] | 401 | |
Ivo van Doorn | 133adf0 | 2008-04-04 00:01:43 +0200 | [diff] [blame] | 402 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 403 | } |
| 404 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 405 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
| 406 | struct ieee80211_vif *vif) |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 407 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 408 | struct rt2x00_dev *rt2x00dev = data; |
| 409 | struct rt2x00_intf *intf = vif_to_intf(vif); |
| 410 | struct sk_buff *skb; |
| 411 | struct ieee80211_tx_control control; |
| 412 | struct ieee80211_bss_conf conf; |
| 413 | int delayed_flags; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 414 | |
| 415 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 416 | * Copy all data we need during this action under the protection |
| 417 | * of a spinlock. Otherwise race conditions might occur which results |
| 418 | * into an invalid configuration. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 419 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 420 | spin_lock(&intf->lock); |
| 421 | |
| 422 | memcpy(&conf, &intf->conf, sizeof(conf)); |
| 423 | delayed_flags = intf->delayed_flags; |
| 424 | intf->delayed_flags = 0; |
| 425 | |
| 426 | spin_unlock(&intf->lock); |
| 427 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 428 | /* |
| 429 | * It is possible the radio was disabled while the work had been |
| 430 | * scheduled. If that happens we should return here immediately, |
| 431 | * note that in the spinlock protected area above the delayed_flags |
| 432 | * have been cleared correctly. |
| 433 | */ |
| 434 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 435 | return; |
| 436 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 437 | if (delayed_flags & DELAYED_UPDATE_BEACON) { |
| 438 | skb = ieee80211_beacon_get(rt2x00dev->hw, vif, &control); |
Ivo van Doorn | 171afcd | 2008-04-09 20:46:27 +0200 | [diff] [blame] | 439 | if (skb && rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, |
| 440 | skb, &control)) |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 441 | dev_kfree_skb(skb); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 442 | } |
| 443 | |
Ivo van Doorn | 7281037 | 2008-03-09 22:46:18 +0100 | [diff] [blame] | 444 | if (delayed_flags & DELAYED_CONFIG_ERP) |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 445 | rt2x00lib_config_erp(rt2x00dev, intf, &conf); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 446 | |
| 447 | if (delayed_flags & DELAYED_LED_ASSOC) |
| 448 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
| 452 | { |
| 453 | struct rt2x00_dev *rt2x00dev = |
| 454 | container_of(work, struct rt2x00_dev, intf_work); |
| 455 | |
| 456 | /* |
| 457 | * Iterate over each interface and perform the |
| 458 | * requested configurations. |
| 459 | */ |
| 460 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 461 | rt2x00lib_intf_scheduled_iter, |
| 462 | rt2x00dev); |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 463 | } |
| 464 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 465 | /* |
| 466 | * Interrupt context handlers. |
| 467 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 468 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
| 469 | struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 470 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 471 | struct rt2x00_intf *intf = vif_to_intf(vif); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 472 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 473 | if (vif->type != IEEE80211_IF_TYPE_AP && |
| 474 | vif->type != IEEE80211_IF_TYPE_IBSS) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 475 | return; |
| 476 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 477 | spin_lock(&intf->lock); |
| 478 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
| 479 | spin_unlock(&intf->lock); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 480 | } |
| 481 | |
| 482 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) |
| 483 | { |
| 484 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 485 | return; |
| 486 | |
Ivo van Doorn | 633257d | 2008-05-23 18:14:02 +0200 | [diff] [blame] | 487 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 488 | rt2x00lib_beacondone_iter, |
| 489 | rt2x00dev); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 490 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 491 | queue_work(rt2x00dev->workqueue, &rt2x00dev->intf_work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 492 | } |
| 493 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); |
| 494 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 495 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 496 | struct txdone_entry_desc *txdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 497 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 498 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 499 | struct skb_frame_desc *skbdesc; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 500 | struct ieee80211_tx_status tx_status; |
| 501 | int success = !!(txdesc->status == TX_SUCCESS || |
| 502 | txdesc->status == TX_SUCCESS_RETRY); |
| 503 | int fail = !!(txdesc->status == TX_FAIL_RETRY || |
| 504 | txdesc->status == TX_FAIL_INVALID || |
| 505 | txdesc->status == TX_FAIL_OTHER); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 506 | |
| 507 | /* |
| 508 | * Update TX statistics. |
| 509 | */ |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 510 | rt2x00dev->link.qual.tx_success += success; |
Ivo van Doorn | 2088d41 | 2008-05-23 18:13:49 +0200 | [diff] [blame] | 511 | rt2x00dev->link.qual.tx_failed += fail; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 512 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 513 | /* |
| 514 | * Initialize TX status |
| 515 | */ |
| 516 | tx_status.flags = 0; |
| 517 | tx_status.ack_signal = 0; |
| 518 | tx_status.excessive_retries = (txdesc->status == TX_FAIL_RETRY); |
| 519 | tx_status.retry_count = txdesc->retry; |
Mattias Nissler | 95db4d4 | 2008-03-09 22:39:32 +0100 | [diff] [blame] | 520 | memcpy(&tx_status.control, txdesc->control, sizeof(*txdesc->control)); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 521 | |
| 522 | if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 523 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 524 | tx_status.flags |= IEEE80211_TX_STATUS_ACK; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 525 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 526 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 527 | } |
| 528 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 529 | tx_status.queue_length = entry->queue->limit; |
| 530 | tx_status.queue_number = tx_status.control.queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 531 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 532 | if (tx_status.control.flags & IEEE80211_TXCTL_USE_RTS_CTS) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 533 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 534 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 535 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 536 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | /* |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 540 | * Send the tx_status to debugfs. Only send the status report |
| 541 | * to mac80211 when the frame originated from there. If this was |
| 542 | * a extra frame coming through a mac80211 library call (RTS/CTS) |
| 543 | * then we should not send the status report back. |
| 544 | * If send to mac80211, mac80211 will clean up the skb structure, |
| 545 | * otherwise we have to do it ourself. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 546 | */ |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 547 | skbdesc = get_skb_frame_desc(entry->skb); |
| 548 | skbdesc->frame_type = DUMP_FRAME_TXDONE; |
| 549 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 550 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 551 | |
| 552 | if (!(skbdesc->flags & FRAME_DESC_DRIVER_GENERATED)) |
| 553 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, |
| 554 | entry->skb, &tx_status); |
| 555 | else |
| 556 | dev_kfree_skb(entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 557 | entry->skb = NULL; |
| 558 | } |
| 559 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); |
| 560 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 561 | void rt2x00lib_rxdone(struct queue_entry *entry, |
| 562 | struct rxdone_entry_desc *rxdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 563 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 564 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 565 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 566 | struct ieee80211_supported_band *sband; |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 567 | struct ieee80211_hdr *hdr; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 568 | const struct rt2x00_rate *rate; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 569 | unsigned int i; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 570 | int idx = -1; |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 571 | u16 fc; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 572 | |
| 573 | /* |
| 574 | * Update RX statistics. |
| 575 | */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 576 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
| 577 | for (i = 0; i < sband->n_bitrates; i++) { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 578 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 579 | |
Ivo van Doorn | 19d30e0 | 2008-03-15 21:38:07 +0100 | [diff] [blame] | 580 | if (((rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
| 581 | (rate->plcp == rxdesc->signal)) || |
| 582 | (!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
| 583 | (rate->bitrate == rxdesc->signal))) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 584 | idx = i; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 585 | break; |
| 586 | } |
| 587 | } |
| 588 | |
Ivo van Doorn | 866a050 | 2008-03-25 14:12:45 +0100 | [diff] [blame] | 589 | if (idx < 0) { |
| 590 | WARNING(rt2x00dev, "Frame received with unrecognized signal," |
| 591 | "signal=0x%.2x, plcp=%d.\n", rxdesc->signal, |
| 592 | !!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP)); |
| 593 | idx = 0; |
| 594 | } |
| 595 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 596 | /* |
Ivo van Doorn | 7e56d38 | 2008-01-06 23:41:28 +0100 | [diff] [blame] | 597 | * Only update link status if this is a beacon frame carrying our bssid. |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 598 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 599 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
Ivo van Doorn | 7e56d38 | 2008-01-06 23:41:28 +0100 | [diff] [blame] | 600 | fc = le16_to_cpu(hdr->frame_control); |
Ivo van Doorn | 19d30e0 | 2008-03-15 21:38:07 +0100 | [diff] [blame] | 601 | if (is_beacon(fc) && (rxdesc->dev_flags & RXDONE_MY_BSS)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 602 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi); |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 603 | |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 604 | rt2x00dev->link.qual.rx_success++; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 605 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 606 | rx_status->rate_idx = idx; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 607 | rx_status->signal = |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 608 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi); |
| 609 | rx_status->ssi = rxdesc->rssi; |
| 610 | rx_status->flag = rxdesc->flags; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 611 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 612 | |
| 613 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 614 | * Send frame to mac80211 & debugfs. |
| 615 | * mac80211 will clean up the skb structure. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 616 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 617 | get_skb_frame_desc(entry->skb)->frame_type = DUMP_FRAME_RXDONE; |
| 618 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); |
| 619 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
| 620 | entry->skb = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 621 | } |
| 622 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); |
| 623 | |
| 624 | /* |
| 625 | * TX descriptor initializer |
| 626 | */ |
| 627 | void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 628 | struct sk_buff *skb, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 629 | struct ieee80211_tx_control *control) |
| 630 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 631 | struct txentry_desc txdesc; |
| 632 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); |
Ivo van Doorn | 3976ae6 | 2008-03-09 22:41:53 +0100 | [diff] [blame] | 633 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skbdesc->data; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 634 | const struct rt2x00_rate *rate; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 635 | int tx_rate; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 636 | int length; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 637 | int duration; |
| 638 | int residual; |
| 639 | u16 frame_control; |
| 640 | u16 seq_ctrl; |
| 641 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 642 | memset(&txdesc, 0, sizeof(txdesc)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 643 | |
Ivo van Doorn | 091ed31 | 2008-02-03 15:52:21 +0100 | [diff] [blame] | 644 | txdesc.queue = skbdesc->entry->queue->qid; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 645 | txdesc.cw_min = skbdesc->entry->queue->cw_min; |
| 646 | txdesc.cw_max = skbdesc->entry->queue->cw_max; |
| 647 | txdesc.aifs = skbdesc->entry->queue->aifs; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 648 | |
| 649 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 650 | * Read required fields from ieee80211 header. |
| 651 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 652 | frame_control = le16_to_cpu(hdr->frame_control); |
| 653 | seq_ctrl = le16_to_cpu(hdr->seq_ctrl); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 654 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 655 | tx_rate = control->tx_rate->hw_value; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 656 | |
| 657 | /* |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 658 | * Check whether this frame is to be acked |
| 659 | */ |
| 660 | if (!(control->flags & IEEE80211_TXCTL_NO_ACK)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 661 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 662 | |
| 663 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 664 | * Check if this is a RTS/CTS frame |
| 665 | */ |
| 666 | if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 667 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 668 | if (is_rts_frame(frame_control)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 669 | __set_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags); |
| 670 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 671 | } else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 672 | __clear_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 673 | if (control->rts_cts_rate) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 674 | tx_rate = control->rts_cts_rate->hw_value; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 675 | } |
| 676 | |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 677 | rate = rt2x00_get_rate(tx_rate); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 678 | |
| 679 | /* |
| 680 | * Check if more fragments are pending |
| 681 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 682 | if (ieee80211_get_morefrag(hdr)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 683 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
| 684 | __set_bit(ENTRY_TXD_MORE_FRAG, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | /* |
| 688 | * Beacons and probe responses require the tsf timestamp |
| 689 | * to be inserted into the frame. |
| 690 | */ |
Ivo van Doorn | 5957da4 | 2008-02-03 15:54:57 +0100 | [diff] [blame] | 691 | if (control->queue == RT2X00_BCN_QUEUE_BEACON || |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 692 | is_probe_resp(frame_control)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 693 | __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 694 | |
| 695 | /* |
| 696 | * Determine with what IFS priority this frame should be send. |
| 697 | * Set ifs to IFS_SIFS when the this is not the first fragment, |
| 698 | * or this fragment came after RTS/CTS. |
| 699 | */ |
| 700 | if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 || |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 701 | test_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags)) |
| 702 | txdesc.ifs = IFS_SIFS; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 703 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 704 | txdesc.ifs = IFS_BACKOFF; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 705 | |
| 706 | /* |
| 707 | * PLCP setup |
| 708 | * Length calculation depends on OFDM/CCK rate. |
| 709 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 710 | txdesc.signal = rate->plcp; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 711 | txdesc.service = 0x04; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 712 | |
Ivo van Doorn | 3976ae6 | 2008-03-09 22:41:53 +0100 | [diff] [blame] | 713 | length = skbdesc->data_len + FCS_LEN; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 714 | if (rate->flags & DEV_RATE_OFDM) { |
| 715 | __set_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags); |
| 716 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 717 | txdesc.length_high = (length >> 6) & 0x3f; |
| 718 | txdesc.length_low = length & 0x3f; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 719 | } else { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 720 | /* |
| 721 | * Convert length to microseconds. |
| 722 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 723 | residual = get_duration_res(length, rate->bitrate); |
| 724 | duration = get_duration(length, rate->bitrate); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 725 | |
| 726 | if (residual != 0) { |
| 727 | duration++; |
| 728 | |
| 729 | /* |
| 730 | * Check if we need to set the Length Extension |
| 731 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 732 | if (rate->bitrate == 110 && residual <= 30) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 733 | txdesc.service |= 0x80; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 736 | txdesc.length_high = (duration >> 8) & 0xff; |
| 737 | txdesc.length_low = duration & 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 738 | |
| 739 | /* |
| 740 | * When preamble is enabled we should set the |
| 741 | * preamble bit for the signal. |
| 742 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 743 | if (rt2x00_get_rate_preamble(tx_rate)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 744 | txdesc.signal |= 0x08; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 747 | rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &txdesc, control); |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 748 | |
| 749 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 750 | * Update queue entry. |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 751 | */ |
| 752 | skbdesc->entry->skb = skb; |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 753 | |
| 754 | /* |
| 755 | * The frame has been completely initialized and ready |
| 756 | * for sending to the device. The caller will push the |
| 757 | * frame to the device, but we are going to push the |
| 758 | * frame to debugfs here. |
| 759 | */ |
| 760 | skbdesc->frame_type = DUMP_FRAME_TX; |
| 761 | rt2x00debug_dump_frame(rt2x00dev, skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 762 | } |
| 763 | EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc); |
| 764 | |
| 765 | /* |
| 766 | * Driver initialization handlers. |
| 767 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 768 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
| 769 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 770 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 771 | .bitrate = 10, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 772 | .ratemask = BIT(0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 773 | .plcp = 0x00, |
| 774 | }, |
| 775 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 776 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 777 | .bitrate = 20, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 778 | .ratemask = BIT(1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 779 | .plcp = 0x01, |
| 780 | }, |
| 781 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 782 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 783 | .bitrate = 55, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 784 | .ratemask = BIT(2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 785 | .plcp = 0x02, |
| 786 | }, |
| 787 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 788 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 789 | .bitrate = 110, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 790 | .ratemask = BIT(3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 791 | .plcp = 0x03, |
| 792 | }, |
| 793 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 794 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 795 | .bitrate = 60, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 796 | .ratemask = BIT(4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 797 | .plcp = 0x0b, |
| 798 | }, |
| 799 | { |
| 800 | .flags = DEV_RATE_OFDM, |
| 801 | .bitrate = 90, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 802 | .ratemask = BIT(5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 803 | .plcp = 0x0f, |
| 804 | }, |
| 805 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 806 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 807 | .bitrate = 120, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 808 | .ratemask = BIT(6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 809 | .plcp = 0x0a, |
| 810 | }, |
| 811 | { |
| 812 | .flags = DEV_RATE_OFDM, |
| 813 | .bitrate = 180, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 814 | .ratemask = BIT(7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 815 | .plcp = 0x0e, |
| 816 | }, |
| 817 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 818 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 819 | .bitrate = 240, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 820 | .ratemask = BIT(8), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 821 | .plcp = 0x09, |
| 822 | }, |
| 823 | { |
| 824 | .flags = DEV_RATE_OFDM, |
| 825 | .bitrate = 360, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 826 | .ratemask = BIT(9), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 827 | .plcp = 0x0d, |
| 828 | }, |
| 829 | { |
| 830 | .flags = DEV_RATE_OFDM, |
| 831 | .bitrate = 480, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 832 | .ratemask = BIT(10), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 833 | .plcp = 0x08, |
| 834 | }, |
| 835 | { |
| 836 | .flags = DEV_RATE_OFDM, |
| 837 | .bitrate = 540, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 838 | .ratemask = BIT(11), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 839 | .plcp = 0x0c, |
| 840 | }, |
| 841 | }; |
| 842 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 843 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
| 844 | const int channel, const int tx_power, |
| 845 | const int value) |
| 846 | { |
Ivo van Doorn | f2a3c7f | 2008-02-03 15:52:45 +0100 | [diff] [blame] | 847 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 848 | entry->hw_value = value; |
| 849 | entry->max_power = tx_power; |
| 850 | entry->max_antenna_gain = 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | static void rt2x00lib_rate(struct ieee80211_rate *entry, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 854 | const u16 index, const struct rt2x00_rate *rate) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 855 | { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 856 | entry->flags = 0; |
| 857 | entry->bitrate = rate->bitrate; |
| 858 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 859 | entry->hw_value_short = entry->hw_value; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 860 | |
| 861 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { |
| 862 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
| 863 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); |
| 864 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, |
| 868 | struct hw_mode_spec *spec) |
| 869 | { |
| 870 | struct ieee80211_hw *hw = rt2x00dev->hw; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 871 | struct ieee80211_channel *channels; |
| 872 | struct ieee80211_rate *rates; |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 873 | unsigned int num_rates; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 874 | unsigned int i; |
| 875 | unsigned char tx_power; |
| 876 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 877 | num_rates = 0; |
| 878 | if (spec->supported_rates & SUPPORT_RATE_CCK) |
| 879 | num_rates += 4; |
| 880 | if (spec->supported_rates & SUPPORT_RATE_OFDM) |
| 881 | num_rates += 8; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 882 | |
| 883 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); |
| 884 | if (!channels) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 885 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 886 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 887 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 888 | if (!rates) |
| 889 | goto exit_free_channels; |
| 890 | |
| 891 | /* |
| 892 | * Initialize Rate list. |
| 893 | */ |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 894 | for (i = 0; i < num_rates; i++) |
Ivo van Doorn | 8f5fa7f | 2008-02-03 15:54:34 +0100 | [diff] [blame] | 895 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 896 | |
| 897 | /* |
| 898 | * Initialize Channel list. |
| 899 | */ |
| 900 | for (i = 0; i < spec->num_channels; i++) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 901 | if (spec->channels[i].channel <= 14) { |
| 902 | if (spec->tx_power_bg) |
| 903 | tx_power = spec->tx_power_bg[i]; |
| 904 | else |
| 905 | tx_power = spec->tx_power_default; |
| 906 | } else { |
| 907 | if (spec->tx_power_a) |
| 908 | tx_power = spec->tx_power_a[i]; |
| 909 | else |
| 910 | tx_power = spec->tx_power_default; |
| 911 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 912 | |
| 913 | rt2x00lib_channel(&channels[i], |
| 914 | spec->channels[i].channel, tx_power, i); |
| 915 | } |
| 916 | |
| 917 | /* |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 918 | * Intitialize 802.11b, 802.11g |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 919 | * Rates: CCK, OFDM. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 920 | * Channels: 2.4 GHz |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 921 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 922 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 923 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
| 924 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; |
| 925 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; |
| 926 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; |
| 927 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 928 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | /* |
| 932 | * Intitialize 802.11a |
| 933 | * Rates: OFDM. |
| 934 | * Channels: OFDM, UNII, HiperLAN2. |
| 935 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 936 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 937 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
| 938 | spec->num_channels - 14; |
| 939 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = |
| 940 | num_rates - 4; |
| 941 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; |
| 942 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; |
| 943 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 944 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 945 | } |
| 946 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 947 | return 0; |
| 948 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 949 | exit_free_channels: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 950 | kfree(channels); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 951 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
| 952 | return -ENOMEM; |
| 953 | } |
| 954 | |
| 955 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) |
| 956 | { |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 957 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 958 | ieee80211_unregister_hw(rt2x00dev->hw); |
| 959 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 960 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
| 961 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); |
| 962 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); |
| 963 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; |
| 964 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 965 | } |
| 966 | } |
| 967 | |
| 968 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) |
| 969 | { |
| 970 | struct hw_mode_spec *spec = &rt2x00dev->spec; |
| 971 | int status; |
| 972 | |
| 973 | /* |
| 974 | * Initialize HW modes. |
| 975 | */ |
| 976 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); |
| 977 | if (status) |
| 978 | return status; |
| 979 | |
| 980 | /* |
| 981 | * Register HW. |
| 982 | */ |
| 983 | status = ieee80211_register_hw(rt2x00dev->hw); |
| 984 | if (status) { |
| 985 | rt2x00lib_remove_hw(rt2x00dev); |
| 986 | return status; |
| 987 | } |
| 988 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 989 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 990 | |
| 991 | return 0; |
| 992 | } |
| 993 | |
| 994 | /* |
| 995 | * Initialization/uninitialization handlers. |
| 996 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 997 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 998 | { |
| 999 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) |
| 1000 | return; |
| 1001 | |
| 1002 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1003 | * Unregister extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1004 | */ |
| 1005 | rt2x00rfkill_unregister(rt2x00dev); |
| 1006 | |
| 1007 | /* |
| 1008 | * Allow the HW to uninitialize. |
| 1009 | */ |
| 1010 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); |
| 1011 | |
| 1012 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1013 | * Free allocated queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1014 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1015 | rt2x00queue_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1016 | } |
| 1017 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1018 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1019 | { |
| 1020 | int status; |
| 1021 | |
| 1022 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) |
| 1023 | return 0; |
| 1024 | |
| 1025 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1026 | * Allocate all queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1027 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1028 | status = rt2x00queue_initialize(rt2x00dev); |
| 1029 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1030 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1031 | |
| 1032 | /* |
| 1033 | * Initialize the device. |
| 1034 | */ |
| 1035 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); |
Ivo van Doorn | ed49998 | 2008-05-05 17:23:47 +0200 | [diff] [blame] | 1036 | if (status) { |
| 1037 | rt2x00queue_uninitialize(rt2x00dev); |
| 1038 | return status; |
| 1039 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1040 | |
| 1041 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); |
| 1042 | |
| 1043 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1044 | * Register the extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1045 | */ |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1046 | rt2x00rfkill_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1047 | |
| 1048 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1051 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
| 1052 | { |
| 1053 | int retval; |
| 1054 | |
| 1055 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1056 | return 0; |
| 1057 | |
| 1058 | /* |
| 1059 | * If this is the first interface which is added, |
| 1060 | * we should load the firmware now. |
| 1061 | */ |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 1062 | retval = rt2x00lib_load_firmware(rt2x00dev); |
| 1063 | if (retval) |
| 1064 | return retval; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1065 | |
| 1066 | /* |
| 1067 | * Initialize the device. |
| 1068 | */ |
| 1069 | retval = rt2x00lib_initialize(rt2x00dev); |
| 1070 | if (retval) |
| 1071 | return retval; |
| 1072 | |
| 1073 | /* |
| 1074 | * Enable radio. |
| 1075 | */ |
| 1076 | retval = rt2x00lib_enable_radio(rt2x00dev); |
| 1077 | if (retval) { |
| 1078 | rt2x00lib_uninitialize(rt2x00dev); |
| 1079 | return retval; |
| 1080 | } |
| 1081 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1082 | rt2x00dev->intf_ap_count = 0; |
| 1083 | rt2x00dev->intf_sta_count = 0; |
| 1084 | rt2x00dev->intf_associated = 0; |
| 1085 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1086 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
| 1087 | |
| 1088 | return 0; |
| 1089 | } |
| 1090 | |
| 1091 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |
| 1092 | { |
| 1093 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1094 | return; |
| 1095 | |
| 1096 | /* |
| 1097 | * Perhaps we can add something smarter here, |
| 1098 | * but for now just disabling the radio should do. |
| 1099 | */ |
| 1100 | rt2x00lib_disable_radio(rt2x00dev); |
| 1101 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1102 | rt2x00dev->intf_ap_count = 0; |
| 1103 | rt2x00dev->intf_sta_count = 0; |
| 1104 | rt2x00dev->intf_associated = 0; |
| 1105 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1106 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
| 1107 | } |
| 1108 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1109 | /* |
| 1110 | * driver allocation handlers. |
| 1111 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1112 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
| 1113 | { |
| 1114 | int retval = -ENOMEM; |
| 1115 | |
| 1116 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1117 | * Make room for rt2x00_intf inside the per-interface |
| 1118 | * structure ieee80211_vif. |
| 1119 | */ |
| 1120 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); |
| 1121 | |
| 1122 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1123 | * Let the driver probe the device to detect the capabilities. |
| 1124 | */ |
| 1125 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); |
| 1126 | if (retval) { |
| 1127 | ERROR(rt2x00dev, "Failed to allocate device.\n"); |
| 1128 | goto exit; |
| 1129 | } |
| 1130 | |
| 1131 | /* |
| 1132 | * Initialize configuration work. |
| 1133 | */ |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 1134 | rt2x00dev->workqueue = create_singlethread_workqueue("rt2x00lib"); |
| 1135 | if (!rt2x00dev->workqueue) |
| 1136 | goto exit; |
| 1137 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1138 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1139 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1140 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
| 1141 | |
| 1142 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1143 | * Allocate queue array. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1144 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1145 | retval = rt2x00queue_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1146 | if (retval) |
| 1147 | goto exit; |
| 1148 | |
| 1149 | /* |
| 1150 | * Initialize ieee80211 structure. |
| 1151 | */ |
| 1152 | retval = rt2x00lib_probe_hw(rt2x00dev); |
| 1153 | if (retval) { |
| 1154 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); |
| 1155 | goto exit; |
| 1156 | } |
| 1157 | |
| 1158 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1159 | * Register extra components. |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1160 | */ |
| 1161 | rt2x00leds_register(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1162 | rt2x00rfkill_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1163 | rt2x00debug_register(rt2x00dev); |
| 1164 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1165 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1166 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1167 | return 0; |
| 1168 | |
| 1169 | exit: |
| 1170 | rt2x00lib_remove_dev(rt2x00dev); |
| 1171 | |
| 1172 | return retval; |
| 1173 | } |
| 1174 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); |
| 1175 | |
| 1176 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) |
| 1177 | { |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1178 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1179 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1180 | /* |
| 1181 | * Disable radio. |
| 1182 | */ |
| 1183 | rt2x00lib_disable_radio(rt2x00dev); |
| 1184 | |
| 1185 | /* |
| 1186 | * Uninitialize device. |
| 1187 | */ |
| 1188 | rt2x00lib_uninitialize(rt2x00dev); |
| 1189 | |
| 1190 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1191 | * Free extra components |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1192 | */ |
| 1193 | rt2x00debug_deregister(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1194 | rt2x00rfkill_free(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1195 | rt2x00leds_unregister(rt2x00dev); |
| 1196 | |
| 1197 | /* |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame^] | 1198 | * Stop all queued work. Note that most tasks will already be halted |
| 1199 | * during rt2x00lib_disable_radio() and rt2x00lib_uninitialize(). |
| 1200 | */ |
| 1201 | flush_workqueue(rt2x00dev->workqueue); |
| 1202 | destroy_workqueue(rt2x00dev->workqueue); |
| 1203 | |
| 1204 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1205 | * Free ieee80211_hw memory. |
| 1206 | */ |
| 1207 | rt2x00lib_remove_hw(rt2x00dev); |
| 1208 | |
| 1209 | /* |
| 1210 | * Free firmware image. |
| 1211 | */ |
| 1212 | rt2x00lib_free_firmware(rt2x00dev); |
| 1213 | |
| 1214 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1215 | * Free queue structures. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1216 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1217 | rt2x00queue_free(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1218 | } |
| 1219 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); |
| 1220 | |
| 1221 | /* |
| 1222 | * Device state handlers |
| 1223 | */ |
| 1224 | #ifdef CONFIG_PM |
| 1225 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) |
| 1226 | { |
| 1227 | int retval; |
| 1228 | |
| 1229 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1230 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1231 | |
| 1232 | /* |
| 1233 | * Only continue if mac80211 has open interfaces. |
| 1234 | */ |
| 1235 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1236 | goto exit; |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1237 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1238 | |
| 1239 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1240 | * Disable radio. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1241 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1242 | rt2x00lib_stop(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1243 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1244 | |
| 1245 | /* |
| 1246 | * Suspend/disable extra components. |
| 1247 | */ |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1248 | rt2x00leds_suspend(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1249 | rt2x00rfkill_suspend(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1250 | rt2x00debug_deregister(rt2x00dev); |
| 1251 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1252 | exit: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1253 | /* |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1254 | * Set device mode to sleep for power management, |
| 1255 | * on some hardware this call seems to consistently fail. |
| 1256 | * From the specifications it is hard to tell why it fails, |
| 1257 | * and if this is a "bad thing". |
| 1258 | * Overall it is safe to just ignore the failure and |
| 1259 | * continue suspending. The only downside is that the |
| 1260 | * device will not be in optimal power save mode, but with |
| 1261 | * the radio and the other components already disabled the |
| 1262 | * device is as good as disabled. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1263 | */ |
| 1264 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); |
| 1265 | if (retval) |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1266 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
| 1267 | "continue suspending.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1268 | |
| 1269 | return 0; |
| 1270 | } |
| 1271 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); |
| 1272 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1273 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
| 1274 | struct ieee80211_vif *vif) |
| 1275 | { |
| 1276 | struct rt2x00_dev *rt2x00dev = data; |
| 1277 | struct rt2x00_intf *intf = vif_to_intf(vif); |
| 1278 | |
| 1279 | spin_lock(&intf->lock); |
| 1280 | |
| 1281 | rt2x00lib_config_intf(rt2x00dev, intf, |
| 1282 | vif->type, intf->mac, intf->bssid); |
| 1283 | |
| 1284 | |
| 1285 | /* |
| 1286 | * Master or Ad-hoc mode require a new beacon update. |
| 1287 | */ |
| 1288 | if (vif->type == IEEE80211_IF_TYPE_AP || |
| 1289 | vif->type == IEEE80211_IF_TYPE_IBSS) |
| 1290 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
| 1291 | |
| 1292 | spin_unlock(&intf->lock); |
| 1293 | } |
| 1294 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1295 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
| 1296 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1297 | int retval; |
| 1298 | |
| 1299 | NOTICE(rt2x00dev, "Waking up.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1300 | |
| 1301 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1302 | * Restore/enable extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1303 | */ |
| 1304 | rt2x00debug_register(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1305 | rt2x00rfkill_resume(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1306 | rt2x00leds_resume(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1307 | |
| 1308 | /* |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1309 | * Only continue if mac80211 had open interfaces. |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1310 | */ |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1311 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1312 | return 0; |
| 1313 | |
| 1314 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1315 | * Reinitialize device and all active interfaces. |
| 1316 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1317 | retval = rt2x00lib_start(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1318 | if (retval) |
| 1319 | goto exit; |
| 1320 | |
| 1321 | /* |
| 1322 | * Reconfigure device. |
| 1323 | */ |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1324 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
| 1325 | if (!rt2x00dev->hw->conf.radio_enabled) |
| 1326 | rt2x00lib_disable_radio(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1327 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1328 | /* |
| 1329 | * Iterator over each active interface to |
| 1330 | * reconfigure the hardware. |
| 1331 | */ |
| 1332 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 1333 | rt2x00lib_resume_intf, rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1334 | |
| 1335 | /* |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1336 | * We are ready again to receive requests from mac80211. |
| 1337 | */ |
| 1338 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1339 | |
| 1340 | /* |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1341 | * It is possible that during that mac80211 has attempted |
| 1342 | * to send frames while we were suspending or resuming. |
| 1343 | * In that case we have disabled the TX queue and should |
| 1344 | * now enable it again |
| 1345 | */ |
| 1346 | ieee80211_start_queues(rt2x00dev->hw); |
| 1347 | |
| 1348 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1349 | * During interface iteration we might have changed the |
| 1350 | * delayed_flags, time to handles the event by calling |
| 1351 | * the work handler directly. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1352 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1353 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1354 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1355 | return 0; |
| 1356 | |
| 1357 | exit: |
| 1358 | rt2x00lib_disable_radio(rt2x00dev); |
| 1359 | rt2x00lib_uninitialize(rt2x00dev); |
| 1360 | rt2x00debug_deregister(rt2x00dev); |
| 1361 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1362 | return retval; |
| 1363 | } |
| 1364 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); |
| 1365 | #endif /* CONFIG_PM */ |
| 1366 | |
| 1367 | /* |
| 1368 | * rt2x00lib module information. |
| 1369 | */ |
| 1370 | MODULE_AUTHOR(DRV_PROJECT); |
| 1371 | MODULE_VERSION(DRV_VERSION); |
| 1372 | MODULE_DESCRIPTION("rt2x00 library"); |
| 1373 | MODULE_LICENSE("GPL"); |