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 | |
| 78 | queue_delayed_work(rt2x00dev->hw->workqueue, |
| 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 | */ |
| 111 | status = rt2x00dev->ops->lib->set_device_state(rt2x00dev, |
| 112 | STATE_RADIO_ON); |
| 113 | if (status) |
| 114 | return status; |
| 115 | |
| 116 | __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags); |
| 117 | |
| 118 | /* |
| 119 | * Enable RX. |
| 120 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 121 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 122 | |
| 123 | /* |
| 124 | * Start the TX queues. |
| 125 | */ |
| 126 | ieee80211_start_queues(rt2x00dev->hw); |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 132 | { |
| 133 | if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 134 | return; |
| 135 | |
| 136 | /* |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 137 | * Stop all scheduled work. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 138 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 139 | if (work_pending(&rt2x00dev->intf_work)) |
| 140 | cancel_work_sync(&rt2x00dev->intf_work); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 141 | if (work_pending(&rt2x00dev->filter_work)) |
| 142 | cancel_work_sync(&rt2x00dev->filter_work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 143 | |
| 144 | /* |
| 145 | * Stop the TX queues. |
| 146 | */ |
| 147 | ieee80211_stop_queues(rt2x00dev->hw); |
| 148 | |
| 149 | /* |
| 150 | * Disable RX. |
| 151 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 152 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 153 | |
| 154 | /* |
| 155 | * Disable radio. |
| 156 | */ |
| 157 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); |
| 158 | } |
| 159 | |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 160 | 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] | 161 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 162 | /* |
| 163 | * When we are disabling the RX, we should also stop the link tuner. |
| 164 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 165 | if (state == STATE_RADIO_RX_OFF) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 166 | rt2x00lib_stop_link_tuner(rt2x00dev); |
| 167 | |
| 168 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); |
| 169 | |
| 170 | /* |
| 171 | * When we are enabling the RX, we should also start the link tuner. |
| 172 | */ |
Ivo van Doorn | 5cbf830 | 2007-10-06 14:16:09 +0200 | [diff] [blame] | 173 | if (state == STATE_RADIO_RX_ON && |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 174 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 175 | rt2x00lib_start_link_tuner(rt2x00dev); |
| 176 | } |
| 177 | |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 178 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
| 179 | { |
| 180 | enum antenna rx = rt2x00dev->link.ant.active.rx; |
| 181 | enum antenna tx = rt2x00dev->link.ant.active.tx; |
| 182 | int sample_a = |
| 183 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); |
| 184 | int sample_b = |
| 185 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); |
| 186 | |
| 187 | /* |
| 188 | * We are done sampling. Now we should evaluate the results. |
| 189 | */ |
| 190 | rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE; |
| 191 | |
| 192 | /* |
| 193 | * During the last period we have sampled the RSSI |
| 194 | * from both antenna's. It now is time to determine |
| 195 | * which antenna demonstrated the best performance. |
| 196 | * When we are already on the antenna with the best |
| 197 | * performance, then there really is nothing for us |
| 198 | * left to do. |
| 199 | */ |
| 200 | if (sample_a == sample_b) |
| 201 | return; |
| 202 | |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 203 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
| 204 | rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 205 | |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 206 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
| 207 | tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 208 | |
| 209 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); |
| 210 | } |
| 211 | |
| 212 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) |
| 213 | { |
| 214 | enum antenna rx = rt2x00dev->link.ant.active.rx; |
| 215 | enum antenna tx = rt2x00dev->link.ant.active.tx; |
| 216 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); |
| 217 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); |
| 218 | |
| 219 | /* |
| 220 | * Legacy driver indicates that we should swap antenna's |
| 221 | * when the difference in RSSI is greater that 5. This |
| 222 | * also should be done when the RSSI was actually better |
| 223 | * then the previous sample. |
| 224 | * When the difference exceeds the threshold we should |
| 225 | * sample the rssi from the other antenna to make a valid |
| 226 | * comparison between the 2 antennas. |
| 227 | */ |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 228 | if (abs(rssi_curr - rssi_old) < 5) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 229 | return; |
| 230 | |
| 231 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; |
| 232 | |
| 233 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
| 234 | rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
| 235 | |
| 236 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
| 237 | tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
| 238 | |
| 239 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); |
| 240 | } |
| 241 | |
| 242 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) |
| 243 | { |
| 244 | /* |
| 245 | * Determine if software diversity is enabled for |
| 246 | * either the TX or RX antenna (or both). |
| 247 | * Always perform this check since within the link |
| 248 | * tuner interval the configuration might have changed. |
| 249 | */ |
| 250 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; |
| 251 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; |
| 252 | |
| 253 | if (rt2x00dev->hw->conf.antenna_sel_rx == 0 && |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 254 | rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 255 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
| 256 | if (rt2x00dev->hw->conf.antenna_sel_tx == 0 && |
Ivo van Doorn | b290d43 | 2008-02-25 23:15:01 +0100 | [diff] [blame] | 257 | rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 258 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
| 259 | |
| 260 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && |
| 261 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { |
Ivo van Doorn | 05253c9 | 2008-02-25 23:15:08 +0100 | [diff] [blame] | 262 | rt2x00dev->link.ant.flags = 0; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 263 | return; |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * If we have only sampled the data over the last period |
| 268 | * we should now harvest the data. Otherwise just evaluate |
| 269 | * the data. The latter should only be performed once |
| 270 | * every 2 seconds. |
| 271 | */ |
| 272 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) |
| 273 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); |
| 274 | else if (rt2x00dev->link.count & 1) |
| 275 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); |
| 276 | } |
| 277 | |
| 278 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) |
| 279 | { |
| 280 | int avg_rssi = rssi; |
| 281 | |
| 282 | /* |
| 283 | * Update global RSSI |
| 284 | */ |
| 285 | if (link->qual.avg_rssi) |
| 286 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); |
| 287 | link->qual.avg_rssi = avg_rssi; |
| 288 | |
| 289 | /* |
| 290 | * Update antenna RSSI |
| 291 | */ |
| 292 | if (link->ant.rssi_ant) |
| 293 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); |
| 294 | link->ant.rssi_ant = rssi; |
| 295 | } |
| 296 | |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 297 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 298 | { |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 299 | if (qual->rx_failed || qual->rx_success) |
| 300 | qual->rx_percentage = |
| 301 | (qual->rx_success * 100) / |
| 302 | (qual->rx_failed + qual->rx_success); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 303 | else |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 304 | qual->rx_percentage = 50; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 305 | |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 306 | if (qual->tx_failed || qual->tx_success) |
| 307 | qual->tx_percentage = |
| 308 | (qual->tx_success * 100) / |
| 309 | (qual->tx_failed + qual->tx_success); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 310 | else |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 311 | qual->tx_percentage = 50; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 312 | |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 313 | qual->rx_success = 0; |
| 314 | qual->rx_failed = 0; |
| 315 | qual->tx_success = 0; |
| 316 | qual->tx_failed = 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, |
| 320 | int rssi) |
| 321 | { |
| 322 | int rssi_percentage = 0; |
| 323 | int signal; |
| 324 | |
| 325 | /* |
| 326 | * We need a positive value for the RSSI. |
| 327 | */ |
| 328 | if (rssi < 0) |
| 329 | rssi += rt2x00dev->rssi_offset; |
| 330 | |
| 331 | /* |
| 332 | * Calculate the different percentages, |
| 333 | * which will be used for the signal. |
| 334 | */ |
| 335 | if (rt2x00dev->rssi_offset) |
| 336 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; |
| 337 | |
| 338 | /* |
| 339 | * Add the individual percentages and use the WEIGHT |
| 340 | * defines to calculate the current link signal. |
| 341 | */ |
| 342 | signal = ((WEIGHT_RSSI * rssi_percentage) + |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 343 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
| 344 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 345 | |
| 346 | return (signal > 100) ? 100 : signal; |
| 347 | } |
| 348 | |
| 349 | static void rt2x00lib_link_tuner(struct work_struct *work) |
| 350 | { |
| 351 | struct rt2x00_dev *rt2x00dev = |
| 352 | container_of(work, struct rt2x00_dev, link.work.work); |
| 353 | |
| 354 | /* |
Ivo van Doorn | 25ab002 | 2007-09-25 20:57:04 +0200 | [diff] [blame] | 355 | * When the radio is shutting down we should |
| 356 | * immediately cease all link tuning. |
| 357 | */ |
| 358 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 359 | return; |
| 360 | |
| 361 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 362 | * Update statistics. |
| 363 | */ |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 364 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 365 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 366 | rt2x00dev->link.qual.rx_failed; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 367 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 368 | /* |
| 369 | * Only perform the link tuning when Link tuning |
| 370 | * has been enabled (This could have been disabled from the EEPROM). |
| 371 | */ |
| 372 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) |
| 373 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); |
| 374 | |
| 375 | /* |
Ivo van Doorn | 725d99d | 2007-09-25 20:53:20 +0200 | [diff] [blame] | 376 | * Precalculate a portion of the link signal which is |
| 377 | * in based on the tx/rx success/failure counters. |
| 378 | */ |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 379 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
Ivo van Doorn | 725d99d | 2007-09-25 20:53:20 +0200 | [diff] [blame] | 380 | |
| 381 | /* |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 382 | * Send a signal to the led to update the led signal strength. |
| 383 | */ |
| 384 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); |
| 385 | |
| 386 | /* |
Ivo van Doorn | 53b3f8e | 2008-02-25 23:15:13 +0100 | [diff] [blame] | 387 | * Evaluate antenna setup, make this the last step since this could |
| 388 | * possibly reset some statistics. |
| 389 | */ |
| 390 | rt2x00lib_evaluate_antenna(rt2x00dev); |
| 391 | |
| 392 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 393 | * Increase tuner counter, and reschedule the next link tuner run. |
| 394 | */ |
| 395 | rt2x00dev->link.count++; |
| 396 | queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work, |
| 397 | LINK_TUNE_INTERVAL); |
| 398 | } |
| 399 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 400 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
| 401 | { |
| 402 | struct rt2x00_dev *rt2x00dev = |
| 403 | container_of(work, struct rt2x00_dev, filter_work); |
Ivo van Doorn | 3c4f208 | 2008-01-06 23:40:49 +0100 | [diff] [blame] | 404 | unsigned int filter = rt2x00dev->packet_filter; |
Ivo van Doorn | 5886d0d | 2007-10-06 14:13:38 +0200 | [diff] [blame] | 405 | |
| 406 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 407 | * Since we had stored the filter inside rt2x00dev->packet_filter, |
Ivo van Doorn | 5886d0d | 2007-10-06 14:13:38 +0200 | [diff] [blame] | 408 | * we should now clear that field. Otherwise the driver will |
| 409 | * assume nothing has changed (*total_flags will be compared |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 410 | * to rt2x00dev->packet_filter to determine if any action is required). |
Ivo van Doorn | 5886d0d | 2007-10-06 14:13:38 +0200 | [diff] [blame] | 411 | */ |
Ivo van Doorn | 3c4f208 | 2008-01-06 23:40:49 +0100 | [diff] [blame] | 412 | rt2x00dev->packet_filter = 0; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 413 | |
| 414 | rt2x00dev->ops->hw->configure_filter(rt2x00dev->hw, |
Ivo van Doorn | 5886d0d | 2007-10-06 14:13:38 +0200 | [diff] [blame] | 415 | filter, &filter, 0, NULL); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 416 | } |
| 417 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 418 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
| 419 | struct ieee80211_vif *vif) |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 420 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 421 | struct rt2x00_dev *rt2x00dev = data; |
| 422 | struct rt2x00_intf *intf = vif_to_intf(vif); |
| 423 | struct sk_buff *skb; |
| 424 | struct ieee80211_tx_control control; |
| 425 | struct ieee80211_bss_conf conf; |
| 426 | int delayed_flags; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 427 | |
| 428 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 429 | * Copy all data we need during this action under the protection |
| 430 | * of a spinlock. Otherwise race conditions might occur which results |
| 431 | * into an invalid configuration. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 432 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 433 | spin_lock(&intf->lock); |
| 434 | |
| 435 | memcpy(&conf, &intf->conf, sizeof(conf)); |
| 436 | delayed_flags = intf->delayed_flags; |
| 437 | intf->delayed_flags = 0; |
| 438 | |
| 439 | spin_unlock(&intf->lock); |
| 440 | |
| 441 | if (delayed_flags & DELAYED_UPDATE_BEACON) { |
| 442 | skb = ieee80211_beacon_get(rt2x00dev->hw, vif, &control); |
| 443 | if (skb) { |
| 444 | rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb, |
| 445 | &control); |
| 446 | dev_kfree_skb(skb); |
| 447 | } |
| 448 | } |
| 449 | |
Ivo van Doorn | 7281037 | 2008-03-09 22:46:18 +0100 | [diff] [blame] | 450 | if (delayed_flags & DELAYED_CONFIG_ERP) |
| 451 | rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
| 455 | { |
| 456 | struct rt2x00_dev *rt2x00dev = |
| 457 | container_of(work, struct rt2x00_dev, intf_work); |
| 458 | |
| 459 | /* |
| 460 | * Iterate over each interface and perform the |
| 461 | * requested configurations. |
| 462 | */ |
| 463 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 464 | rt2x00lib_intf_scheduled_iter, |
| 465 | rt2x00dev); |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 466 | } |
| 467 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 468 | /* |
| 469 | * Interrupt context handlers. |
| 470 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 471 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
| 472 | struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 473 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 474 | struct rt2x00_intf *intf = vif_to_intf(vif); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 475 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 476 | if (vif->type != IEEE80211_IF_TYPE_AP && |
| 477 | vif->type != IEEE80211_IF_TYPE_IBSS) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 478 | return; |
| 479 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 480 | spin_lock(&intf->lock); |
| 481 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
| 482 | spin_unlock(&intf->lock); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) |
| 486 | { |
| 487 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 488 | return; |
| 489 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 490 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 491 | rt2x00lib_beacondone_iter, |
| 492 | rt2x00dev); |
| 493 | |
| 494 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 495 | } |
| 496 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); |
| 497 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 498 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 499 | struct txdone_entry_desc *txdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 500 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 501 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 502 | struct skb_frame_desc *skbdesc; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 503 | struct ieee80211_tx_status tx_status; |
| 504 | int success = !!(txdesc->status == TX_SUCCESS || |
| 505 | txdesc->status == TX_SUCCESS_RETRY); |
| 506 | int fail = !!(txdesc->status == TX_FAIL_RETRY || |
| 507 | txdesc->status == TX_FAIL_INVALID || |
| 508 | txdesc->status == TX_FAIL_OTHER); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 509 | |
| 510 | /* |
| 511 | * Update TX statistics. |
| 512 | */ |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 513 | rt2x00dev->link.qual.tx_success += success; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 514 | rt2x00dev->link.qual.tx_failed += txdesc->retry + fail; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 515 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 516 | /* |
| 517 | * Initialize TX status |
| 518 | */ |
| 519 | tx_status.flags = 0; |
| 520 | tx_status.ack_signal = 0; |
| 521 | tx_status.excessive_retries = (txdesc->status == TX_FAIL_RETRY); |
| 522 | tx_status.retry_count = txdesc->retry; |
Mattias Nissler | 95db4d4 | 2008-03-09 22:39:32 +0100 | [diff] [blame] | 523 | memcpy(&tx_status.control, txdesc->control, sizeof(*txdesc->control)); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 524 | |
| 525 | if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 526 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 527 | tx_status.flags |= IEEE80211_TX_STATUS_ACK; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 528 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 529 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 530 | } |
| 531 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 532 | tx_status.queue_length = entry->queue->limit; |
| 533 | tx_status.queue_number = tx_status.control.queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 534 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 535 | if (tx_status.control.flags & IEEE80211_TXCTL_USE_RTS_CTS) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 536 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 537 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 538 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 539 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | /* |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 543 | * Send the tx_status to debugfs. Only send the status report |
| 544 | * to mac80211 when the frame originated from there. If this was |
| 545 | * a extra frame coming through a mac80211 library call (RTS/CTS) |
| 546 | * then we should not send the status report back. |
| 547 | * If send to mac80211, mac80211 will clean up the skb structure, |
| 548 | * otherwise we have to do it ourself. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 549 | */ |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 550 | skbdesc = get_skb_frame_desc(entry->skb); |
| 551 | skbdesc->frame_type = DUMP_FRAME_TXDONE; |
| 552 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 553 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); |
Ivo van Doorn | baf26a7 | 2008-02-17 17:32:08 +0100 | [diff] [blame] | 554 | |
| 555 | if (!(skbdesc->flags & FRAME_DESC_DRIVER_GENERATED)) |
| 556 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, |
| 557 | entry->skb, &tx_status); |
| 558 | else |
| 559 | dev_kfree_skb(entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 560 | entry->skb = NULL; |
| 561 | } |
| 562 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); |
| 563 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 564 | void rt2x00lib_rxdone(struct queue_entry *entry, |
| 565 | struct rxdone_entry_desc *rxdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 566 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 567 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 568 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 569 | struct ieee80211_supported_band *sband; |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 570 | struct ieee80211_hdr *hdr; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 571 | const struct rt2x00_rate *rate; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 572 | unsigned int i; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 573 | int idx = -1; |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 574 | u16 fc; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 575 | |
| 576 | /* |
| 577 | * Update RX statistics. |
| 578 | */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 579 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
| 580 | for (i = 0; i < sband->n_bitrates; i++) { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 581 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 582 | |
Ivo van Doorn | 19d30e0 | 2008-03-15 21:38:07 +0100 | [diff] [blame] | 583 | if (((rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
| 584 | (rate->plcp == rxdesc->signal)) || |
| 585 | (!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
| 586 | (rate->bitrate == rxdesc->signal))) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 587 | idx = i; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 588 | break; |
| 589 | } |
| 590 | } |
| 591 | |
Ivo van Doorn | 866a050 | 2008-03-25 14:12:45 +0100 | [diff] [blame] | 592 | if (idx < 0) { |
| 593 | WARNING(rt2x00dev, "Frame received with unrecognized signal," |
| 594 | "signal=0x%.2x, plcp=%d.\n", rxdesc->signal, |
| 595 | !!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP)); |
| 596 | idx = 0; |
| 597 | } |
| 598 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 599 | /* |
Ivo van Doorn | 7e56d38 | 2008-01-06 23:41:28 +0100 | [diff] [blame] | 600 | * 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] | 601 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 602 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
Ivo van Doorn | 7e56d38 | 2008-01-06 23:41:28 +0100 | [diff] [blame] | 603 | fc = le16_to_cpu(hdr->frame_control); |
Ivo van Doorn | 19d30e0 | 2008-03-15 21:38:07 +0100 | [diff] [blame] | 604 | if (is_beacon(fc) && (rxdesc->dev_flags & RXDONE_MY_BSS)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 605 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi); |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 606 | |
Ivo van Doorn | ebcf26da | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 607 | rt2x00dev->link.qual.rx_success++; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 608 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 609 | rx_status->rate_idx = idx; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 610 | rx_status->signal = |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 611 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi); |
| 612 | rx_status->ssi = rxdesc->rssi; |
| 613 | rx_status->flag = rxdesc->flags; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 614 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 615 | |
| 616 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 617 | * Send frame to mac80211 & debugfs. |
| 618 | * mac80211 will clean up the skb structure. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 619 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 620 | get_skb_frame_desc(entry->skb)->frame_type = DUMP_FRAME_RXDONE; |
| 621 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); |
| 622 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
| 623 | entry->skb = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 624 | } |
| 625 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); |
| 626 | |
| 627 | /* |
| 628 | * TX descriptor initializer |
| 629 | */ |
| 630 | void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 631 | struct sk_buff *skb, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 632 | struct ieee80211_tx_control *control) |
| 633 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 634 | struct txentry_desc txdesc; |
| 635 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); |
Ivo van Doorn | 3976ae6 | 2008-03-09 22:41:53 +0100 | [diff] [blame] | 636 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skbdesc->data; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 637 | const struct rt2x00_rate *rate; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 638 | int tx_rate; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 639 | int length; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 640 | int duration; |
| 641 | int residual; |
| 642 | u16 frame_control; |
| 643 | u16 seq_ctrl; |
| 644 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 645 | memset(&txdesc, 0, sizeof(txdesc)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 646 | |
Ivo van Doorn | 091ed31 | 2008-02-03 15:52:21 +0100 | [diff] [blame] | 647 | txdesc.queue = skbdesc->entry->queue->qid; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 648 | txdesc.cw_min = skbdesc->entry->queue->cw_min; |
| 649 | txdesc.cw_max = skbdesc->entry->queue->cw_max; |
| 650 | txdesc.aifs = skbdesc->entry->queue->aifs; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 651 | |
| 652 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 653 | * Read required fields from ieee80211 header. |
| 654 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 655 | frame_control = le16_to_cpu(hdr->frame_control); |
| 656 | seq_ctrl = le16_to_cpu(hdr->seq_ctrl); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 657 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 658 | tx_rate = control->tx_rate->hw_value; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 659 | |
| 660 | /* |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 661 | * Check whether this frame is to be acked |
| 662 | */ |
| 663 | if (!(control->flags & IEEE80211_TXCTL_NO_ACK)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 664 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 665 | |
| 666 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 667 | * Check if this is a RTS/CTS frame |
| 668 | */ |
| 669 | if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 670 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 671 | if (is_rts_frame(frame_control)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 672 | __set_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags); |
| 673 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Mattias Nissler | 2700f8b | 2007-10-27 13:43:49 +0200 | [diff] [blame] | 674 | } else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 675 | __clear_bit(ENTRY_TXD_ACK, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 676 | if (control->rts_cts_rate) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 677 | tx_rate = control->rts_cts_rate->hw_value; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 678 | } |
| 679 | |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 680 | rate = rt2x00_get_rate(tx_rate); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 681 | |
| 682 | /* |
| 683 | * Check if more fragments are pending |
| 684 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 685 | if (ieee80211_get_morefrag(hdr)) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 686 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
| 687 | __set_bit(ENTRY_TXD_MORE_FRAG, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | /* |
| 691 | * Beacons and probe responses require the tsf timestamp |
| 692 | * to be inserted into the frame. |
| 693 | */ |
Ivo van Doorn | 5957da4 | 2008-02-03 15:54:57 +0100 | [diff] [blame] | 694 | if (control->queue == RT2X00_BCN_QUEUE_BEACON || |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 695 | is_probe_resp(frame_control)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 696 | __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc.flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 697 | |
| 698 | /* |
| 699 | * Determine with what IFS priority this frame should be send. |
| 700 | * Set ifs to IFS_SIFS when the this is not the first fragment, |
| 701 | * or this fragment came after RTS/CTS. |
| 702 | */ |
| 703 | if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 || |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 704 | test_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags)) |
| 705 | txdesc.ifs = IFS_SIFS; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 706 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 707 | txdesc.ifs = IFS_BACKOFF; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 708 | |
| 709 | /* |
| 710 | * PLCP setup |
| 711 | * Length calculation depends on OFDM/CCK rate. |
| 712 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 713 | txdesc.signal = rate->plcp; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 714 | txdesc.service = 0x04; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 715 | |
Ivo van Doorn | 3976ae6 | 2008-03-09 22:41:53 +0100 | [diff] [blame] | 716 | length = skbdesc->data_len + FCS_LEN; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 717 | if (rate->flags & DEV_RATE_OFDM) { |
| 718 | __set_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags); |
| 719 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 720 | txdesc.length_high = (length >> 6) & 0x3f; |
| 721 | txdesc.length_low = length & 0x3f; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 722 | } else { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 723 | /* |
| 724 | * Convert length to microseconds. |
| 725 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 726 | residual = get_duration_res(length, rate->bitrate); |
| 727 | duration = get_duration(length, rate->bitrate); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 728 | |
| 729 | if (residual != 0) { |
| 730 | duration++; |
| 731 | |
| 732 | /* |
| 733 | * Check if we need to set the Length Extension |
| 734 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 735 | if (rate->bitrate == 110 && residual <= 30) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 736 | txdesc.service |= 0x80; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 737 | } |
| 738 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 739 | txdesc.length_high = (duration >> 8) & 0xff; |
| 740 | txdesc.length_low = duration & 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 741 | |
| 742 | /* |
| 743 | * When preamble is enabled we should set the |
| 744 | * preamble bit for the signal. |
| 745 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 746 | if (rt2x00_get_rate_preamble(tx_rate)) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 747 | txdesc.signal |= 0x08; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 748 | } |
| 749 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 750 | rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &txdesc, control); |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 751 | |
| 752 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 753 | * Update queue entry. |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 754 | */ |
| 755 | skbdesc->entry->skb = skb; |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 756 | |
| 757 | /* |
| 758 | * The frame has been completely initialized and ready |
| 759 | * for sending to the device. The caller will push the |
| 760 | * frame to the device, but we are going to push the |
| 761 | * frame to debugfs here. |
| 762 | */ |
| 763 | skbdesc->frame_type = DUMP_FRAME_TX; |
| 764 | rt2x00debug_dump_frame(rt2x00dev, skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 765 | } |
| 766 | EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc); |
| 767 | |
| 768 | /* |
| 769 | * Driver initialization handlers. |
| 770 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 771 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
| 772 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 773 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 774 | .bitrate = 10, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 775 | .ratemask = BIT(0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 776 | .plcp = 0x00, |
| 777 | }, |
| 778 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 779 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 780 | .bitrate = 20, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 781 | .ratemask = BIT(1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 782 | .plcp = 0x01, |
| 783 | }, |
| 784 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 785 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 786 | .bitrate = 55, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 787 | .ratemask = BIT(2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 788 | .plcp = 0x02, |
| 789 | }, |
| 790 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 791 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 792 | .bitrate = 110, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 793 | .ratemask = BIT(3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 794 | .plcp = 0x03, |
| 795 | }, |
| 796 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 797 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 798 | .bitrate = 60, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 799 | .ratemask = BIT(4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 800 | .plcp = 0x0b, |
| 801 | }, |
| 802 | { |
| 803 | .flags = DEV_RATE_OFDM, |
| 804 | .bitrate = 90, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 805 | .ratemask = BIT(5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 806 | .plcp = 0x0f, |
| 807 | }, |
| 808 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 809 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 810 | .bitrate = 120, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 811 | .ratemask = BIT(6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 812 | .plcp = 0x0a, |
| 813 | }, |
| 814 | { |
| 815 | .flags = DEV_RATE_OFDM, |
| 816 | .bitrate = 180, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 817 | .ratemask = BIT(7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 818 | .plcp = 0x0e, |
| 819 | }, |
| 820 | { |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 821 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 822 | .bitrate = 240, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 823 | .ratemask = BIT(8), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 824 | .plcp = 0x09, |
| 825 | }, |
| 826 | { |
| 827 | .flags = DEV_RATE_OFDM, |
| 828 | .bitrate = 360, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 829 | .ratemask = BIT(9), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 830 | .plcp = 0x0d, |
| 831 | }, |
| 832 | { |
| 833 | .flags = DEV_RATE_OFDM, |
| 834 | .bitrate = 480, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 835 | .ratemask = BIT(10), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 836 | .plcp = 0x08, |
| 837 | }, |
| 838 | { |
| 839 | .flags = DEV_RATE_OFDM, |
| 840 | .bitrate = 540, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 841 | .ratemask = BIT(11), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 842 | .plcp = 0x0c, |
| 843 | }, |
| 844 | }; |
| 845 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 846 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
| 847 | const int channel, const int tx_power, |
| 848 | const int value) |
| 849 | { |
Ivo van Doorn | f2a3c7f | 2008-02-03 15:52:45 +0100 | [diff] [blame] | 850 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 851 | entry->hw_value = value; |
| 852 | entry->max_power = tx_power; |
| 853 | entry->max_antenna_gain = 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | static void rt2x00lib_rate(struct ieee80211_rate *entry, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 857 | const u16 index, const struct rt2x00_rate *rate) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 858 | { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 859 | entry->flags = 0; |
| 860 | entry->bitrate = rate->bitrate; |
| 861 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 862 | entry->hw_value_short = entry->hw_value; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 863 | |
| 864 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { |
| 865 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
| 866 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); |
| 867 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 868 | } |
| 869 | |
| 870 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, |
| 871 | struct hw_mode_spec *spec) |
| 872 | { |
| 873 | struct ieee80211_hw *hw = rt2x00dev->hw; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 874 | struct ieee80211_channel *channels; |
| 875 | struct ieee80211_rate *rates; |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 876 | unsigned int num_rates; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 877 | unsigned int i; |
| 878 | unsigned char tx_power; |
| 879 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 880 | num_rates = 0; |
| 881 | if (spec->supported_rates & SUPPORT_RATE_CCK) |
| 882 | num_rates += 4; |
| 883 | if (spec->supported_rates & SUPPORT_RATE_OFDM) |
| 884 | num_rates += 8; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 885 | |
| 886 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); |
| 887 | if (!channels) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 888 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 889 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 890 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 891 | if (!rates) |
| 892 | goto exit_free_channels; |
| 893 | |
| 894 | /* |
| 895 | * Initialize Rate list. |
| 896 | */ |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 897 | for (i = 0; i < num_rates; i++) |
Ivo van Doorn | 8f5fa7f | 2008-02-03 15:54:34 +0100 | [diff] [blame] | 898 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 899 | |
| 900 | /* |
| 901 | * Initialize Channel list. |
| 902 | */ |
| 903 | for (i = 0; i < spec->num_channels; i++) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 904 | if (spec->channels[i].channel <= 14) { |
| 905 | if (spec->tx_power_bg) |
| 906 | tx_power = spec->tx_power_bg[i]; |
| 907 | else |
| 908 | tx_power = spec->tx_power_default; |
| 909 | } else { |
| 910 | if (spec->tx_power_a) |
| 911 | tx_power = spec->tx_power_a[i]; |
| 912 | else |
| 913 | tx_power = spec->tx_power_default; |
| 914 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 915 | |
| 916 | rt2x00lib_channel(&channels[i], |
| 917 | spec->channels[i].channel, tx_power, i); |
| 918 | } |
| 919 | |
| 920 | /* |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 921 | * Intitialize 802.11b, 802.11g |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 922 | * Rates: CCK, OFDM. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 923 | * Channels: 2.4 GHz |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 924 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 925 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 926 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
| 927 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; |
| 928 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; |
| 929 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; |
| 930 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 931 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 932 | } |
| 933 | |
| 934 | /* |
| 935 | * Intitialize 802.11a |
| 936 | * Rates: OFDM. |
| 937 | * Channels: OFDM, UNII, HiperLAN2. |
| 938 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 939 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 940 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
| 941 | spec->num_channels - 14; |
| 942 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = |
| 943 | num_rates - 4; |
| 944 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; |
| 945 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; |
| 946 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 947 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 948 | } |
| 949 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 950 | return 0; |
| 951 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 952 | exit_free_channels: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 953 | kfree(channels); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 954 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
| 955 | return -ENOMEM; |
| 956 | } |
| 957 | |
| 958 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) |
| 959 | { |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 960 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 961 | ieee80211_unregister_hw(rt2x00dev->hw); |
| 962 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 963 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
| 964 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); |
| 965 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); |
| 966 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; |
| 967 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 968 | } |
| 969 | } |
| 970 | |
| 971 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) |
| 972 | { |
| 973 | struct hw_mode_spec *spec = &rt2x00dev->spec; |
| 974 | int status; |
| 975 | |
| 976 | /* |
| 977 | * Initialize HW modes. |
| 978 | */ |
| 979 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); |
| 980 | if (status) |
| 981 | return status; |
| 982 | |
| 983 | /* |
| 984 | * Register HW. |
| 985 | */ |
| 986 | status = ieee80211_register_hw(rt2x00dev->hw); |
| 987 | if (status) { |
| 988 | rt2x00lib_remove_hw(rt2x00dev); |
| 989 | return status; |
| 990 | } |
| 991 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 992 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 993 | |
| 994 | return 0; |
| 995 | } |
| 996 | |
| 997 | /* |
| 998 | * Initialization/uninitialization handlers. |
| 999 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1000 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1001 | { |
| 1002 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) |
| 1003 | return; |
| 1004 | |
| 1005 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1006 | * Unregister extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1007 | */ |
| 1008 | rt2x00rfkill_unregister(rt2x00dev); |
| 1009 | |
| 1010 | /* |
| 1011 | * Allow the HW to uninitialize. |
| 1012 | */ |
| 1013 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); |
| 1014 | |
| 1015 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1016 | * Free allocated queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1017 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1018 | rt2x00queue_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1019 | } |
| 1020 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1021 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1022 | { |
| 1023 | int status; |
| 1024 | |
| 1025 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) |
| 1026 | return 0; |
| 1027 | |
| 1028 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1029 | * Allocate all queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1030 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1031 | status = rt2x00queue_initialize(rt2x00dev); |
| 1032 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1033 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1034 | |
| 1035 | /* |
| 1036 | * Initialize the device. |
| 1037 | */ |
| 1038 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); |
| 1039 | if (status) |
| 1040 | goto exit; |
| 1041 | |
| 1042 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); |
| 1043 | |
| 1044 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1045 | * Register the extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1046 | */ |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1047 | rt2x00rfkill_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1048 | |
| 1049 | return 0; |
| 1050 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1051 | exit: |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1052 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1053 | |
| 1054 | return status; |
| 1055 | } |
| 1056 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1057 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
| 1058 | { |
| 1059 | int retval; |
| 1060 | |
| 1061 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1062 | return 0; |
| 1063 | |
| 1064 | /* |
| 1065 | * If this is the first interface which is added, |
| 1066 | * we should load the firmware now. |
| 1067 | */ |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 1068 | retval = rt2x00lib_load_firmware(rt2x00dev); |
| 1069 | if (retval) |
| 1070 | return retval; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1071 | |
| 1072 | /* |
| 1073 | * Initialize the device. |
| 1074 | */ |
| 1075 | retval = rt2x00lib_initialize(rt2x00dev); |
| 1076 | if (retval) |
| 1077 | return retval; |
| 1078 | |
| 1079 | /* |
| 1080 | * Enable radio. |
| 1081 | */ |
| 1082 | retval = rt2x00lib_enable_radio(rt2x00dev); |
| 1083 | if (retval) { |
| 1084 | rt2x00lib_uninitialize(rt2x00dev); |
| 1085 | return retval; |
| 1086 | } |
| 1087 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1088 | rt2x00dev->intf_ap_count = 0; |
| 1089 | rt2x00dev->intf_sta_count = 0; |
| 1090 | rt2x00dev->intf_associated = 0; |
| 1091 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1092 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
| 1093 | |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
| 1097 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |
| 1098 | { |
| 1099 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1100 | return; |
| 1101 | |
| 1102 | /* |
| 1103 | * Perhaps we can add something smarter here, |
| 1104 | * but for now just disabling the radio should do. |
| 1105 | */ |
| 1106 | rt2x00lib_disable_radio(rt2x00dev); |
| 1107 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1108 | rt2x00dev->intf_ap_count = 0; |
| 1109 | rt2x00dev->intf_sta_count = 0; |
| 1110 | rt2x00dev->intf_associated = 0; |
| 1111 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1112 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
| 1113 | } |
| 1114 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1115 | /* |
| 1116 | * driver allocation handlers. |
| 1117 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1118 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
| 1119 | { |
| 1120 | int retval = -ENOMEM; |
| 1121 | |
| 1122 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1123 | * Make room for rt2x00_intf inside the per-interface |
| 1124 | * structure ieee80211_vif. |
| 1125 | */ |
| 1126 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); |
| 1127 | |
| 1128 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1129 | * Let the driver probe the device to detect the capabilities. |
| 1130 | */ |
| 1131 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); |
| 1132 | if (retval) { |
| 1133 | ERROR(rt2x00dev, "Failed to allocate device.\n"); |
| 1134 | goto exit; |
| 1135 | } |
| 1136 | |
| 1137 | /* |
| 1138 | * Initialize configuration work. |
| 1139 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1140 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1141 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1142 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
| 1143 | |
| 1144 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1145 | * Allocate queue array. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1146 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1147 | retval = rt2x00queue_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1148 | if (retval) |
| 1149 | goto exit; |
| 1150 | |
| 1151 | /* |
| 1152 | * Initialize ieee80211 structure. |
| 1153 | */ |
| 1154 | retval = rt2x00lib_probe_hw(rt2x00dev); |
| 1155 | if (retval) { |
| 1156 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); |
| 1157 | goto exit; |
| 1158 | } |
| 1159 | |
| 1160 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1161 | * Register extra components. |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1162 | */ |
| 1163 | rt2x00leds_register(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1164 | rt2x00rfkill_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1165 | rt2x00debug_register(rt2x00dev); |
| 1166 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1167 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1168 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1169 | return 0; |
| 1170 | |
| 1171 | exit: |
| 1172 | rt2x00lib_remove_dev(rt2x00dev); |
| 1173 | |
| 1174 | return retval; |
| 1175 | } |
| 1176 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); |
| 1177 | |
| 1178 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) |
| 1179 | { |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1180 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1181 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1182 | /* |
| 1183 | * Disable radio. |
| 1184 | */ |
| 1185 | rt2x00lib_disable_radio(rt2x00dev); |
| 1186 | |
| 1187 | /* |
| 1188 | * Uninitialize device. |
| 1189 | */ |
| 1190 | rt2x00lib_uninitialize(rt2x00dev); |
| 1191 | |
| 1192 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1193 | * Free extra components |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1194 | */ |
| 1195 | rt2x00debug_deregister(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1196 | rt2x00rfkill_free(rt2x00dev); |
| 1197 | |
| 1198 | /* |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1199 | * Free LED. |
| 1200 | */ |
| 1201 | rt2x00leds_unregister(rt2x00dev); |
| 1202 | |
| 1203 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1204 | * Free ieee80211_hw memory. |
| 1205 | */ |
| 1206 | rt2x00lib_remove_hw(rt2x00dev); |
| 1207 | |
| 1208 | /* |
| 1209 | * Free firmware image. |
| 1210 | */ |
| 1211 | rt2x00lib_free_firmware(rt2x00dev); |
| 1212 | |
| 1213 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1214 | * Free queue structures. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1215 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1216 | rt2x00queue_free(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1217 | } |
| 1218 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); |
| 1219 | |
| 1220 | /* |
| 1221 | * Device state handlers |
| 1222 | */ |
| 1223 | #ifdef CONFIG_PM |
| 1224 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) |
| 1225 | { |
| 1226 | int retval; |
| 1227 | |
| 1228 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1229 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1230 | |
| 1231 | /* |
| 1232 | * Only continue if mac80211 has open interfaces. |
| 1233 | */ |
| 1234 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
| 1235 | goto exit; |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1236 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1237 | |
| 1238 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1239 | * Disable radio. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1240 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1241 | rt2x00lib_stop(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1242 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1243 | |
| 1244 | /* |
| 1245 | * Suspend/disable extra components. |
| 1246 | */ |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1247 | rt2x00leds_suspend(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1248 | rt2x00rfkill_suspend(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1249 | rt2x00debug_deregister(rt2x00dev); |
| 1250 | |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1251 | exit: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1252 | /* |
| 1253 | * Set device mode to sleep for power management. |
| 1254 | */ |
| 1255 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); |
| 1256 | if (retval) |
| 1257 | return retval; |
| 1258 | |
| 1259 | return 0; |
| 1260 | } |
| 1261 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); |
| 1262 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1263 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
| 1264 | struct ieee80211_vif *vif) |
| 1265 | { |
| 1266 | struct rt2x00_dev *rt2x00dev = data; |
| 1267 | struct rt2x00_intf *intf = vif_to_intf(vif); |
| 1268 | |
| 1269 | spin_lock(&intf->lock); |
| 1270 | |
| 1271 | rt2x00lib_config_intf(rt2x00dev, intf, |
| 1272 | vif->type, intf->mac, intf->bssid); |
| 1273 | |
| 1274 | |
| 1275 | /* |
| 1276 | * Master or Ad-hoc mode require a new beacon update. |
| 1277 | */ |
| 1278 | if (vif->type == IEEE80211_IF_TYPE_AP || |
| 1279 | vif->type == IEEE80211_IF_TYPE_IBSS) |
| 1280 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
| 1281 | |
| 1282 | spin_unlock(&intf->lock); |
| 1283 | } |
| 1284 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1285 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
| 1286 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1287 | int retval; |
| 1288 | |
| 1289 | NOTICE(rt2x00dev, "Waking up.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1290 | |
| 1291 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1292 | * Restore/enable extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1293 | */ |
| 1294 | rt2x00debug_register(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1295 | rt2x00rfkill_resume(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1296 | rt2x00leds_resume(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1297 | |
| 1298 | /* |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1299 | * Only continue if mac80211 had open interfaces. |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1300 | */ |
Ivo van Doorn | 6d7f987 | 2007-10-06 14:12:42 +0200 | [diff] [blame] | 1301 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1302 | return 0; |
| 1303 | |
| 1304 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1305 | * Reinitialize device and all active interfaces. |
| 1306 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1307 | retval = rt2x00lib_start(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1308 | if (retval) |
| 1309 | goto exit; |
| 1310 | |
| 1311 | /* |
| 1312 | * Reconfigure device. |
| 1313 | */ |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1314 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
| 1315 | if (!rt2x00dev->hw->conf.radio_enabled) |
| 1316 | rt2x00lib_disable_radio(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1317 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1318 | /* |
| 1319 | * Iterator over each active interface to |
| 1320 | * reconfigure the hardware. |
| 1321 | */ |
| 1322 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 1323 | rt2x00lib_resume_intf, rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1324 | |
| 1325 | /* |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1326 | * We are ready again to receive requests from mac80211. |
| 1327 | */ |
| 1328 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
| 1329 | |
| 1330 | /* |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1331 | * It is possible that during that mac80211 has attempted |
| 1332 | * to send frames while we were suspending or resuming. |
| 1333 | * In that case we have disabled the TX queue and should |
| 1334 | * now enable it again |
| 1335 | */ |
| 1336 | ieee80211_start_queues(rt2x00dev->hw); |
| 1337 | |
| 1338 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1339 | * During interface iteration we might have changed the |
| 1340 | * delayed_flags, time to handles the event by calling |
| 1341 | * the work handler directly. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1342 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1343 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1344 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1345 | return 0; |
| 1346 | |
| 1347 | exit: |
| 1348 | rt2x00lib_disable_radio(rt2x00dev); |
| 1349 | rt2x00lib_uninitialize(rt2x00dev); |
| 1350 | rt2x00debug_deregister(rt2x00dev); |
| 1351 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1352 | return retval; |
| 1353 | } |
| 1354 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); |
| 1355 | #endif /* CONFIG_PM */ |
| 1356 | |
| 1357 | /* |
| 1358 | * rt2x00lib module information. |
| 1359 | */ |
| 1360 | MODULE_AUTHOR(DRV_PROJECT); |
| 1361 | MODULE_VERSION(DRV_VERSION); |
| 1362 | MODULE_DESCRIPTION("rt2x00 library"); |
| 1363 | MODULE_LICENSE("GPL"); |