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