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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
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 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
95ea3627 ID |
32 | /* |
33 | * Link tuning handlers | |
34 | */ | |
53b3f8e4 | 35 | void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 36 | { |
53b3f8e4 ID |
37 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
38 | return; | |
39 | ||
40 | /* | |
41 | * Reset link information. | |
42 | * Both the currently active vgc level as well as | |
43 | * the link tuner counter should be reset. Resetting | |
44 | * the counter is important for devices where the | |
45 | * device should only perform link tuning during the | |
46 | * first minute after being enabled. | |
47 | */ | |
8de8c516 ID |
48 | rt2x00dev->link.count = 0; |
49 | rt2x00dev->link.vgc_level = 0; | |
50 | ||
53b3f8e4 ID |
51 | /* |
52 | * Reset the link tuner. | |
53 | */ | |
54 | rt2x00dev->ops->lib->reset_tuner(rt2x00dev); | |
55 | } | |
56 | ||
57 | static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev) | |
58 | { | |
59 | /* | |
60 | * Clear all (possibly) pre-existing quality statistics. | |
61 | */ | |
8de8c516 ID |
62 | memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual)); |
63 | ||
64 | /* | |
65 | * The RX and TX percentage should start at 50% | |
66 | * this will assure we will get at least get some | |
67 | * decent value when the link tuner starts. | |
68 | * The value will be dropped and overwritten with | |
69 | * the correct (measured )value anyway during the | |
70 | * first run of the link tuner. | |
71 | */ | |
72 | rt2x00dev->link.qual.rx_percentage = 50; | |
73 | rt2x00dev->link.qual.tx_percentage = 50; | |
95ea3627 | 74 | |
53b3f8e4 | 75 | rt2x00lib_reset_link_tuner(rt2x00dev); |
95ea3627 ID |
76 | |
77 | queue_delayed_work(rt2x00dev->hw->workqueue, | |
78 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); | |
79 | } | |
80 | ||
81 | static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev) | |
82 | { | |
3e30968e | 83 | cancel_delayed_work_sync(&rt2x00dev->link.work); |
95ea3627 ID |
84 | } |
85 | ||
95ea3627 ID |
86 | /* |
87 | * Radio control handlers. | |
88 | */ | |
89 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
90 | { | |
91 | int status; | |
92 | ||
93 | /* | |
94 | * Don't enable the radio twice. | |
95 | * And check if the hardware button has been disabled. | |
96 | */ | |
97 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || | |
81873e9c | 98 | test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags)) |
95ea3627 ID |
99 | return 0; |
100 | ||
837e7f24 | 101 | /* |
181d6902 | 102 | * Initialize all data queues. |
837e7f24 | 103 | */ |
181d6902 ID |
104 | rt2x00queue_init_rx(rt2x00dev); |
105 | rt2x00queue_init_tx(rt2x00dev); | |
837e7f24 | 106 | |
95ea3627 ID |
107 | /* |
108 | * Enable radio. | |
109 | */ | |
a2e1d52a ID |
110 | status = |
111 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
112 | if (status) |
113 | return status; | |
114 | ||
a2e1d52a | 115 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 116 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 117 | |
95ea3627 ID |
118 | __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags); |
119 | ||
120 | /* | |
121 | * Enable RX. | |
122 | */ | |
5cbf830e | 123 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
124 | |
125 | /* | |
126 | * Start the TX queues. | |
127 | */ | |
36d6825b | 128 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
129 | |
130 | return 0; | |
131 | } | |
132 | ||
133 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
134 | { | |
135 | if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
136 | return; | |
137 | ||
138 | /* | |
4150c572 | 139 | * Stop all scheduled work. |
95ea3627 | 140 | */ |
6bb40dd1 ID |
141 | if (work_pending(&rt2x00dev->intf_work)) |
142 | cancel_work_sync(&rt2x00dev->intf_work); | |
4150c572 JB |
143 | if (work_pending(&rt2x00dev->filter_work)) |
144 | cancel_work_sync(&rt2x00dev->filter_work); | |
95ea3627 ID |
145 | |
146 | /* | |
147 | * Stop the TX queues. | |
148 | */ | |
149 | ieee80211_stop_queues(rt2x00dev->hw); | |
150 | ||
151 | /* | |
152 | * Disable RX. | |
153 | */ | |
5cbf830e | 154 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
155 | |
156 | /* | |
157 | * Disable radio. | |
158 | */ | |
159 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
61c2b682 | 160 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 161 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
162 | } |
163 | ||
5cbf830e | 164 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 165 | { |
95ea3627 ID |
166 | /* |
167 | * When we are disabling the RX, we should also stop the link tuner. | |
168 | */ | |
5cbf830e | 169 | if (state == STATE_RADIO_RX_OFF) |
95ea3627 ID |
170 | rt2x00lib_stop_link_tuner(rt2x00dev); |
171 | ||
172 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
173 | ||
174 | /* | |
175 | * When we are enabling the RX, we should also start the link tuner. | |
176 | */ | |
5cbf830e | 177 | if (state == STATE_RADIO_RX_ON && |
6bb40dd1 | 178 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
95ea3627 ID |
179 | rt2x00lib_start_link_tuner(rt2x00dev); |
180 | } | |
181 | ||
69f81a2c ID |
182 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
183 | { | |
184 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
185 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
186 | int sample_a = | |
187 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); | |
188 | int sample_b = | |
189 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); | |
190 | ||
191 | /* | |
192 | * We are done sampling. Now we should evaluate the results. | |
193 | */ | |
194 | rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE; | |
195 | ||
196 | /* | |
197 | * During the last period we have sampled the RSSI | |
198 | * from both antenna's. It now is time to determine | |
199 | * which antenna demonstrated the best performance. | |
200 | * When we are already on the antenna with the best | |
201 | * performance, then there really is nothing for us | |
202 | * left to do. | |
203 | */ | |
204 | if (sample_a == sample_b) | |
205 | return; | |
206 | ||
05253c93 ID |
207 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
208 | rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c | 209 | |
05253c93 ID |
210 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
211 | tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c ID |
212 | |
213 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
214 | } | |
215 | ||
216 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) | |
217 | { | |
218 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
219 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
220 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); | |
221 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); | |
222 | ||
223 | /* | |
224 | * Legacy driver indicates that we should swap antenna's | |
225 | * when the difference in RSSI is greater that 5. This | |
226 | * also should be done when the RSSI was actually better | |
227 | * then the previous sample. | |
228 | * When the difference exceeds the threshold we should | |
229 | * sample the rssi from the other antenna to make a valid | |
230 | * comparison between the 2 antennas. | |
231 | */ | |
b290d433 | 232 | if (abs(rssi_curr - rssi_old) < 5) |
69f81a2c ID |
233 | return; |
234 | ||
235 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; | |
236 | ||
237 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) | |
238 | rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
239 | ||
240 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) | |
241 | tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
242 | ||
243 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
244 | } | |
245 | ||
246 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) | |
247 | { | |
248 | /* | |
249 | * Determine if software diversity is enabled for | |
250 | * either the TX or RX antenna (or both). | |
251 | * Always perform this check since within the link | |
252 | * tuner interval the configuration might have changed. | |
253 | */ | |
254 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; | |
255 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; | |
256 | ||
257 | if (rt2x00dev->hw->conf.antenna_sel_rx == 0 && | |
b290d433 | 258 | rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
259 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
260 | if (rt2x00dev->hw->conf.antenna_sel_tx == 0 && | |
b290d433 | 261 | rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
262 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
263 | ||
264 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && | |
265 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { | |
05253c93 | 266 | rt2x00dev->link.ant.flags = 0; |
69f81a2c ID |
267 | return; |
268 | } | |
269 | ||
270 | /* | |
271 | * If we have only sampled the data over the last period | |
272 | * we should now harvest the data. Otherwise just evaluate | |
273 | * the data. The latter should only be performed once | |
274 | * every 2 seconds. | |
275 | */ | |
276 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) | |
277 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); | |
278 | else if (rt2x00dev->link.count & 1) | |
279 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); | |
280 | } | |
281 | ||
282 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) | |
283 | { | |
284 | int avg_rssi = rssi; | |
285 | ||
286 | /* | |
287 | * Update global RSSI | |
288 | */ | |
289 | if (link->qual.avg_rssi) | |
290 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); | |
291 | link->qual.avg_rssi = avg_rssi; | |
292 | ||
293 | /* | |
294 | * Update antenna RSSI | |
295 | */ | |
296 | if (link->ant.rssi_ant) | |
297 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); | |
298 | link->ant.rssi_ant = rssi; | |
299 | } | |
300 | ||
ebcf26da | 301 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
95ea3627 | 302 | { |
ebcf26da ID |
303 | if (qual->rx_failed || qual->rx_success) |
304 | qual->rx_percentage = | |
305 | (qual->rx_success * 100) / | |
306 | (qual->rx_failed + qual->rx_success); | |
95ea3627 | 307 | else |
ebcf26da | 308 | qual->rx_percentage = 50; |
95ea3627 | 309 | |
ebcf26da ID |
310 | if (qual->tx_failed || qual->tx_success) |
311 | qual->tx_percentage = | |
312 | (qual->tx_success * 100) / | |
313 | (qual->tx_failed + qual->tx_success); | |
95ea3627 | 314 | else |
ebcf26da | 315 | qual->tx_percentage = 50; |
95ea3627 | 316 | |
ebcf26da ID |
317 | qual->rx_success = 0; |
318 | qual->rx_failed = 0; | |
319 | qual->tx_success = 0; | |
320 | qual->tx_failed = 0; | |
95ea3627 ID |
321 | } |
322 | ||
323 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, | |
324 | int rssi) | |
325 | { | |
326 | int rssi_percentage = 0; | |
327 | int signal; | |
328 | ||
329 | /* | |
330 | * We need a positive value for the RSSI. | |
331 | */ | |
332 | if (rssi < 0) | |
333 | rssi += rt2x00dev->rssi_offset; | |
334 | ||
335 | /* | |
336 | * Calculate the different percentages, | |
337 | * which will be used for the signal. | |
338 | */ | |
339 | if (rt2x00dev->rssi_offset) | |
340 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; | |
341 | ||
342 | /* | |
343 | * Add the individual percentages and use the WEIGHT | |
344 | * defines to calculate the current link signal. | |
345 | */ | |
346 | signal = ((WEIGHT_RSSI * rssi_percentage) + | |
ebcf26da ID |
347 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
348 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; | |
95ea3627 ID |
349 | |
350 | return (signal > 100) ? 100 : signal; | |
351 | } | |
352 | ||
353 | static void rt2x00lib_link_tuner(struct work_struct *work) | |
354 | { | |
355 | struct rt2x00_dev *rt2x00dev = | |
356 | container_of(work, struct rt2x00_dev, link.work.work); | |
357 | ||
25ab002f ID |
358 | /* |
359 | * When the radio is shutting down we should | |
360 | * immediately cease all link tuning. | |
361 | */ | |
362 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
363 | return; | |
364 | ||
95ea3627 ID |
365 | /* |
366 | * Update statistics. | |
367 | */ | |
ebcf26da | 368 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
95ea3627 | 369 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
ebcf26da | 370 | rt2x00dev->link.qual.rx_failed; |
95ea3627 | 371 | |
95ea3627 ID |
372 | /* |
373 | * Only perform the link tuning when Link tuning | |
374 | * has been enabled (This could have been disabled from the EEPROM). | |
375 | */ | |
376 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) | |
377 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); | |
378 | ||
725d99d4 ID |
379 | /* |
380 | * Precalculate a portion of the link signal which is | |
381 | * in based on the tx/rx success/failure counters. | |
382 | */ | |
ebcf26da | 383 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
725d99d4 | 384 | |
a9450b70 ID |
385 | /* |
386 | * Send a signal to the led to update the led signal strength. | |
387 | */ | |
388 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); | |
389 | ||
53b3f8e4 ID |
390 | /* |
391 | * Evaluate antenna setup, make this the last step since this could | |
392 | * possibly reset some statistics. | |
393 | */ | |
394 | rt2x00lib_evaluate_antenna(rt2x00dev); | |
395 | ||
95ea3627 ID |
396 | /* |
397 | * Increase tuner counter, and reschedule the next link tuner run. | |
398 | */ | |
399 | rt2x00dev->link.count++; | |
400 | queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work, | |
401 | LINK_TUNE_INTERVAL); | |
402 | } | |
403 | ||
4150c572 JB |
404 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
405 | { | |
406 | struct rt2x00_dev *rt2x00dev = | |
407 | container_of(work, struct rt2x00_dev, filter_work); | |
5886d0db | 408 | |
133adf08 | 409 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
4150c572 JB |
410 | } |
411 | ||
6bb40dd1 ID |
412 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
413 | struct ieee80211_vif *vif) | |
5c58ee51 | 414 | { |
6bb40dd1 ID |
415 | struct rt2x00_dev *rt2x00dev = data; |
416 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
417 | struct sk_buff *skb; | |
418 | struct ieee80211_tx_control control; | |
419 | struct ieee80211_bss_conf conf; | |
420 | int delayed_flags; | |
421 | ||
422 | /* | |
423 | * Copy all data we need during this action under the protection | |
424 | * of a spinlock. Otherwise race conditions might occur which results | |
425 | * into an invalid configuration. | |
426 | */ | |
427 | spin_lock(&intf->lock); | |
428 | ||
429 | memcpy(&conf, &intf->conf, sizeof(conf)); | |
430 | delayed_flags = intf->delayed_flags; | |
431 | intf->delayed_flags = 0; | |
432 | ||
433 | spin_unlock(&intf->lock); | |
434 | ||
435 | if (delayed_flags & DELAYED_UPDATE_BEACON) { | |
436 | skb = ieee80211_beacon_get(rt2x00dev->hw, vif, &control); | |
171afcd4 ID |
437 | if (skb && rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, |
438 | skb, &control)) | |
6bb40dd1 | 439 | dev_kfree_skb(skb); |
6bb40dd1 ID |
440 | } |
441 | ||
72810379 ID |
442 | if (delayed_flags & DELAYED_CONFIG_ERP) |
443 | rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf); | |
a2e1d52a ID |
444 | |
445 | if (delayed_flags & DELAYED_LED_ASSOC) | |
446 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 447 | } |
5c58ee51 | 448 | |
6bb40dd1 ID |
449 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
450 | { | |
451 | struct rt2x00_dev *rt2x00dev = | |
452 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
453 | |
454 | /* | |
6bb40dd1 ID |
455 | * Iterate over each interface and perform the |
456 | * requested configurations. | |
471b3efd | 457 | */ |
6bb40dd1 ID |
458 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
459 | rt2x00lib_intf_scheduled_iter, | |
460 | rt2x00dev); | |
5c58ee51 ID |
461 | } |
462 | ||
95ea3627 ID |
463 | /* |
464 | * Interrupt context handlers. | |
465 | */ | |
6bb40dd1 ID |
466 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
467 | struct ieee80211_vif *vif) | |
95ea3627 | 468 | { |
6bb40dd1 | 469 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 470 | |
6bb40dd1 ID |
471 | if (vif->type != IEEE80211_IF_TYPE_AP && |
472 | vif->type != IEEE80211_IF_TYPE_IBSS) | |
95ea3627 ID |
473 | return; |
474 | ||
6bb40dd1 ID |
475 | spin_lock(&intf->lock); |
476 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
477 | spin_unlock(&intf->lock); | |
95ea3627 ID |
478 | } |
479 | ||
480 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
481 | { | |
482 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
483 | return; | |
484 | ||
6bb40dd1 ID |
485 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
486 | rt2x00lib_beacondone_iter, | |
487 | rt2x00dev); | |
488 | ||
489 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); | |
95ea3627 ID |
490 | } |
491 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
492 | ||
181d6902 ID |
493 | void rt2x00lib_txdone(struct queue_entry *entry, |
494 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 495 | { |
181d6902 | 496 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
baf26a7e | 497 | struct skb_frame_desc *skbdesc; |
181d6902 | 498 | struct ieee80211_tx_status tx_status; |
95ea3627 ID |
499 | |
500 | /* | |
501 | * Update TX statistics. | |
502 | */ | |
fb55f4d1 ID |
503 | rt2x00dev->link.qual.tx_success += |
504 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
505 | rt2x00dev->link.qual.tx_failed += | |
506 | txdesc->retry + !!test_bit(TXDONE_FAILURE, &txdesc->flags); | |
95ea3627 | 507 | |
181d6902 ID |
508 | /* |
509 | * Initialize TX status | |
510 | */ | |
511 | tx_status.flags = 0; | |
512 | tx_status.ack_signal = 0; | |
fb55f4d1 ID |
513 | tx_status.excessive_retries = |
514 | test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags); | |
181d6902 | 515 | tx_status.retry_count = txdesc->retry; |
95db4d4d | 516 | memcpy(&tx_status.control, txdesc->control, sizeof(*txdesc->control)); |
181d6902 ID |
517 | |
518 | if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) { | |
fb55f4d1 | 519 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 520 | tx_status.flags |= IEEE80211_TX_STATUS_ACK; |
fb55f4d1 | 521 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 522 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
523 | } |
524 | ||
181d6902 | 525 | if (tx_status.control.flags & IEEE80211_TXCTL_USE_RTS_CTS) { |
fb55f4d1 | 526 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 527 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 528 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 529 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
530 | } |
531 | ||
532 | /* | |
baf26a7e ID |
533 | * Send the tx_status to debugfs. Only send the status report |
534 | * to mac80211 when the frame originated from there. If this was | |
535 | * a extra frame coming through a mac80211 library call (RTS/CTS) | |
536 | * then we should not send the status report back. | |
537 | * If send to mac80211, mac80211 will clean up the skb structure, | |
538 | * otherwise we have to do it ourself. | |
95ea3627 | 539 | */ |
5a6e5999 | 540 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); |
baf26a7e | 541 | |
5a6e5999 | 542 | skbdesc = get_skb_frame_desc(entry->skb); |
baf26a7e ID |
543 | if (!(skbdesc->flags & FRAME_DESC_DRIVER_GENERATED)) |
544 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, | |
545 | entry->skb, &tx_status); | |
546 | else | |
fb55f4d1 | 547 | dev_kfree_skb_irq(entry->skb); |
95ea3627 ID |
548 | entry->skb = NULL; |
549 | } | |
550 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
551 | ||
181d6902 ID |
552 | void rt2x00lib_rxdone(struct queue_entry *entry, |
553 | struct rxdone_entry_desc *rxdesc) | |
95ea3627 | 554 | { |
181d6902 | 555 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
95ea3627 | 556 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 557 | struct ieee80211_supported_band *sband; |
61af43c5 | 558 | struct ieee80211_hdr *hdr; |
70e2fed4 | 559 | const struct rt2x00_rate *rate; |
95ea3627 | 560 | unsigned int i; |
70e2fed4 | 561 | int idx = -1; |
61af43c5 | 562 | u16 fc; |
95ea3627 ID |
563 | |
564 | /* | |
565 | * Update RX statistics. | |
566 | */ | |
8318d78a JB |
567 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
568 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 569 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 570 | |
19d30e02 ID |
571 | if (((rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
572 | (rate->plcp == rxdesc->signal)) || | |
573 | (!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && | |
574 | (rate->bitrate == rxdesc->signal))) { | |
8318d78a | 575 | idx = i; |
95ea3627 ID |
576 | break; |
577 | } | |
578 | } | |
579 | ||
866a0503 ID |
580 | if (idx < 0) { |
581 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
582 | "signal=0x%.2x, plcp=%d.\n", rxdesc->signal, | |
583 | !!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP)); | |
584 | idx = 0; | |
585 | } | |
586 | ||
61af43c5 | 587 | /* |
7e56d38d | 588 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 589 | */ |
70e2fed4 | 590 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
7e56d38d | 591 | fc = le16_to_cpu(hdr->frame_control); |
19d30e02 | 592 | if (is_beacon(fc) && (rxdesc->dev_flags & RXDONE_MY_BSS)) |
181d6902 | 593 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi); |
61af43c5 | 594 | |
ebcf26da | 595 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 596 | |
8318d78a | 597 | rx_status->rate_idx = idx; |
566bfe5a | 598 | rx_status->qual = |
181d6902 | 599 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi); |
566bfe5a | 600 | rx_status->signal = rxdesc->rssi; |
181d6902 | 601 | rx_status->flag = rxdesc->flags; |
69f81a2c | 602 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
603 | |
604 | /* | |
181d6902 ID |
605 | * Send frame to mac80211 & debugfs. |
606 | * mac80211 will clean up the skb structure. | |
95ea3627 | 607 | */ |
5a6e5999 | 608 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 ID |
609 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
610 | entry->skb = NULL; | |
95ea3627 ID |
611 | } |
612 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
613 | ||
95ea3627 ID |
614 | /* |
615 | * Driver initialization handlers. | |
616 | */ | |
70e2fed4 ID |
617 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
618 | { | |
aa776721 | 619 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
70e2fed4 | 620 | .bitrate = 10, |
aa776721 | 621 | .ratemask = BIT(0), |
70e2fed4 ID |
622 | .plcp = 0x00, |
623 | }, | |
624 | { | |
aa776721 | 625 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 626 | .bitrate = 20, |
aa776721 | 627 | .ratemask = BIT(1), |
70e2fed4 ID |
628 | .plcp = 0x01, |
629 | }, | |
630 | { | |
aa776721 | 631 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 632 | .bitrate = 55, |
aa776721 | 633 | .ratemask = BIT(2), |
70e2fed4 ID |
634 | .plcp = 0x02, |
635 | }, | |
636 | { | |
aa776721 | 637 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 638 | .bitrate = 110, |
aa776721 | 639 | .ratemask = BIT(3), |
70e2fed4 ID |
640 | .plcp = 0x03, |
641 | }, | |
642 | { | |
aa776721 | 643 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 644 | .bitrate = 60, |
aa776721 | 645 | .ratemask = BIT(4), |
70e2fed4 ID |
646 | .plcp = 0x0b, |
647 | }, | |
648 | { | |
649 | .flags = DEV_RATE_OFDM, | |
650 | .bitrate = 90, | |
aa776721 | 651 | .ratemask = BIT(5), |
70e2fed4 ID |
652 | .plcp = 0x0f, |
653 | }, | |
654 | { | |
aa776721 | 655 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 656 | .bitrate = 120, |
aa776721 | 657 | .ratemask = BIT(6), |
70e2fed4 ID |
658 | .plcp = 0x0a, |
659 | }, | |
660 | { | |
661 | .flags = DEV_RATE_OFDM, | |
662 | .bitrate = 180, | |
aa776721 | 663 | .ratemask = BIT(7), |
70e2fed4 ID |
664 | .plcp = 0x0e, |
665 | }, | |
666 | { | |
aa776721 | 667 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 668 | .bitrate = 240, |
aa776721 | 669 | .ratemask = BIT(8), |
70e2fed4 ID |
670 | .plcp = 0x09, |
671 | }, | |
672 | { | |
673 | .flags = DEV_RATE_OFDM, | |
674 | .bitrate = 360, | |
aa776721 | 675 | .ratemask = BIT(9), |
70e2fed4 ID |
676 | .plcp = 0x0d, |
677 | }, | |
678 | { | |
679 | .flags = DEV_RATE_OFDM, | |
680 | .bitrate = 480, | |
aa776721 | 681 | .ratemask = BIT(10), |
70e2fed4 ID |
682 | .plcp = 0x08, |
683 | }, | |
684 | { | |
685 | .flags = DEV_RATE_OFDM, | |
686 | .bitrate = 540, | |
aa776721 | 687 | .ratemask = BIT(11), |
70e2fed4 ID |
688 | .plcp = 0x0c, |
689 | }, | |
690 | }; | |
691 | ||
95ea3627 ID |
692 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
693 | const int channel, const int tx_power, | |
694 | const int value) | |
695 | { | |
f2a3c7f5 | 696 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
697 | entry->hw_value = value; |
698 | entry->max_power = tx_power; | |
699 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
700 | } |
701 | ||
702 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 703 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 704 | { |
70e2fed4 ID |
705 | entry->flags = 0; |
706 | entry->bitrate = rate->bitrate; | |
707 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 708 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
709 | |
710 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
711 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
712 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
713 | } | |
95ea3627 ID |
714 | } |
715 | ||
716 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
717 | struct hw_mode_spec *spec) | |
718 | { | |
719 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
720 | struct ieee80211_channel *channels; |
721 | struct ieee80211_rate *rates; | |
31562e80 | 722 | unsigned int num_rates; |
95ea3627 ID |
723 | unsigned int i; |
724 | unsigned char tx_power; | |
725 | ||
31562e80 ID |
726 | num_rates = 0; |
727 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
728 | num_rates += 4; | |
729 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
730 | num_rates += 8; | |
95ea3627 ID |
731 | |
732 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
733 | if (!channels) | |
8318d78a | 734 | return -ENOMEM; |
95ea3627 | 735 | |
31562e80 | 736 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
737 | if (!rates) |
738 | goto exit_free_channels; | |
739 | ||
740 | /* | |
741 | * Initialize Rate list. | |
742 | */ | |
31562e80 | 743 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 744 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
745 | |
746 | /* | |
747 | * Initialize Channel list. | |
748 | */ | |
749 | for (i = 0; i < spec->num_channels; i++) { | |
31562e80 ID |
750 | if (spec->channels[i].channel <= 14) { |
751 | if (spec->tx_power_bg) | |
752 | tx_power = spec->tx_power_bg[i]; | |
753 | else | |
754 | tx_power = spec->tx_power_default; | |
755 | } else { | |
756 | if (spec->tx_power_a) | |
757 | tx_power = spec->tx_power_a[i]; | |
758 | else | |
759 | tx_power = spec->tx_power_default; | |
760 | } | |
95ea3627 ID |
761 | |
762 | rt2x00lib_channel(&channels[i], | |
763 | spec->channels[i].channel, tx_power, i); | |
764 | } | |
765 | ||
766 | /* | |
31562e80 | 767 | * Intitialize 802.11b, 802.11g |
95ea3627 | 768 | * Rates: CCK, OFDM. |
8318d78a | 769 | * Channels: 2.4 GHz |
95ea3627 | 770 | */ |
47ac2683 | 771 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
772 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
773 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
774 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
775 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
776 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
777 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
778 | } |
779 | ||
780 | /* | |
781 | * Intitialize 802.11a | |
782 | * Rates: OFDM. | |
783 | * Channels: OFDM, UNII, HiperLAN2. | |
784 | */ | |
47ac2683 | 785 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
786 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
787 | spec->num_channels - 14; | |
788 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
789 | num_rates - 4; | |
790 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
791 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
792 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
793 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
794 | } |
795 | ||
95ea3627 ID |
796 | return 0; |
797 | ||
8318d78a | 798 | exit_free_channels: |
95ea3627 | 799 | kfree(channels); |
95ea3627 ID |
800 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
801 | return -ENOMEM; | |
802 | } | |
803 | ||
804 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
805 | { | |
066cb637 | 806 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
807 | ieee80211_unregister_hw(rt2x00dev->hw); |
808 | ||
8318d78a JB |
809 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
810 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
811 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
812 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
813 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 ID |
814 | } |
815 | } | |
816 | ||
817 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
818 | { | |
819 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
820 | int status; | |
821 | ||
822 | /* | |
823 | * Initialize HW modes. | |
824 | */ | |
825 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
826 | if (status) | |
827 | return status; | |
828 | ||
61448f88 GW |
829 | /* |
830 | * Initialize HW fields. | |
831 | */ | |
832 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
833 | ||
95ea3627 ID |
834 | /* |
835 | * Register HW. | |
836 | */ | |
837 | status = ieee80211_register_hw(rt2x00dev->hw); | |
838 | if (status) { | |
839 | rt2x00lib_remove_hw(rt2x00dev); | |
840 | return status; | |
841 | } | |
842 | ||
066cb637 | 843 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
844 | |
845 | return 0; | |
846 | } | |
847 | ||
848 | /* | |
849 | * Initialization/uninitialization handlers. | |
850 | */ | |
e37ea213 | 851 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
852 | { |
853 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
854 | return; | |
855 | ||
856 | /* | |
1682fe6d | 857 | * Unregister extra components. |
95ea3627 ID |
858 | */ |
859 | rt2x00rfkill_unregister(rt2x00dev); | |
860 | ||
861 | /* | |
862 | * Allow the HW to uninitialize. | |
863 | */ | |
864 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
865 | ||
866 | /* | |
181d6902 | 867 | * Free allocated queue entries. |
95ea3627 | 868 | */ |
181d6902 | 869 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
870 | } |
871 | ||
e37ea213 | 872 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
873 | { |
874 | int status; | |
875 | ||
876 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
877 | return 0; | |
878 | ||
879 | /* | |
181d6902 | 880 | * Allocate all queue entries. |
95ea3627 | 881 | */ |
181d6902 ID |
882 | status = rt2x00queue_initialize(rt2x00dev); |
883 | if (status) | |
95ea3627 | 884 | return status; |
95ea3627 ID |
885 | |
886 | /* | |
887 | * Initialize the device. | |
888 | */ | |
889 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
890 | if (status) { |
891 | rt2x00queue_uninitialize(rt2x00dev); | |
892 | return status; | |
893 | } | |
95ea3627 ID |
894 | |
895 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); | |
896 | ||
897 | /* | |
1682fe6d | 898 | * Register the extra components. |
95ea3627 | 899 | */ |
1682fe6d | 900 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
901 | |
902 | return 0; | |
95ea3627 ID |
903 | } |
904 | ||
e37ea213 ID |
905 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
906 | { | |
907 | int retval; | |
908 | ||
909 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
910 | return 0; | |
911 | ||
912 | /* | |
913 | * If this is the first interface which is added, | |
914 | * we should load the firmware now. | |
915 | */ | |
9404ef34 ID |
916 | retval = rt2x00lib_load_firmware(rt2x00dev); |
917 | if (retval) | |
918 | return retval; | |
e37ea213 ID |
919 | |
920 | /* | |
921 | * Initialize the device. | |
922 | */ | |
923 | retval = rt2x00lib_initialize(rt2x00dev); | |
924 | if (retval) | |
925 | return retval; | |
926 | ||
927 | /* | |
928 | * Enable radio. | |
929 | */ | |
930 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
931 | if (retval) { | |
932 | rt2x00lib_uninitialize(rt2x00dev); | |
933 | return retval; | |
934 | } | |
935 | ||
6bb40dd1 ID |
936 | rt2x00dev->intf_ap_count = 0; |
937 | rt2x00dev->intf_sta_count = 0; | |
938 | rt2x00dev->intf_associated = 0; | |
939 | ||
e37ea213 ID |
940 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
946 | { | |
947 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
948 | return; | |
949 | ||
950 | /* | |
951 | * Perhaps we can add something smarter here, | |
952 | * but for now just disabling the radio should do. | |
953 | */ | |
954 | rt2x00lib_disable_radio(rt2x00dev); | |
955 | ||
6bb40dd1 ID |
956 | rt2x00dev->intf_ap_count = 0; |
957 | rt2x00dev->intf_sta_count = 0; | |
958 | rt2x00dev->intf_associated = 0; | |
959 | ||
e37ea213 ID |
960 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
961 | } | |
962 | ||
95ea3627 ID |
963 | /* |
964 | * driver allocation handlers. | |
965 | */ | |
95ea3627 ID |
966 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
967 | { | |
968 | int retval = -ENOMEM; | |
969 | ||
6bb40dd1 ID |
970 | /* |
971 | * Make room for rt2x00_intf inside the per-interface | |
972 | * structure ieee80211_vif. | |
973 | */ | |
974 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
975 | ||
95ea3627 ID |
976 | /* |
977 | * Let the driver probe the device to detect the capabilities. | |
978 | */ | |
979 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
980 | if (retval) { | |
981 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
982 | goto exit; | |
983 | } | |
984 | ||
985 | /* | |
986 | * Initialize configuration work. | |
987 | */ | |
6bb40dd1 | 988 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 989 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
990 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
991 | ||
95ea3627 | 992 | /* |
181d6902 | 993 | * Allocate queue array. |
95ea3627 | 994 | */ |
181d6902 | 995 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
996 | if (retval) |
997 | goto exit; | |
998 | ||
999 | /* | |
1000 | * Initialize ieee80211 structure. | |
1001 | */ | |
1002 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1003 | if (retval) { | |
1004 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1005 | goto exit; | |
1006 | } | |
1007 | ||
a9450b70 | 1008 | /* |
1682fe6d | 1009 | * Register extra components. |
a9450b70 ID |
1010 | */ |
1011 | rt2x00leds_register(rt2x00dev); | |
1682fe6d | 1012 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
1013 | rt2x00debug_register(rt2x00dev); |
1014 | ||
066cb637 ID |
1015 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1016 | ||
95ea3627 ID |
1017 | return 0; |
1018 | ||
1019 | exit: | |
1020 | rt2x00lib_remove_dev(rt2x00dev); | |
1021 | ||
1022 | return retval; | |
1023 | } | |
1024 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1025 | ||
1026 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1027 | { | |
066cb637 ID |
1028 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1029 | ||
95ea3627 ID |
1030 | /* |
1031 | * Disable radio. | |
1032 | */ | |
1033 | rt2x00lib_disable_radio(rt2x00dev); | |
1034 | ||
1035 | /* | |
1036 | * Uninitialize device. | |
1037 | */ | |
1038 | rt2x00lib_uninitialize(rt2x00dev); | |
1039 | ||
1040 | /* | |
1682fe6d | 1041 | * Free extra components |
95ea3627 ID |
1042 | */ |
1043 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 1044 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
1045 | rt2x00leds_unregister(rt2x00dev); |
1046 | ||
95ea3627 ID |
1047 | /* |
1048 | * Free ieee80211_hw memory. | |
1049 | */ | |
1050 | rt2x00lib_remove_hw(rt2x00dev); | |
1051 | ||
1052 | /* | |
1053 | * Free firmware image. | |
1054 | */ | |
1055 | rt2x00lib_free_firmware(rt2x00dev); | |
1056 | ||
1057 | /* | |
181d6902 | 1058 | * Free queue structures. |
95ea3627 | 1059 | */ |
181d6902 | 1060 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1061 | } |
1062 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1063 | ||
1064 | /* | |
1065 | * Device state handlers | |
1066 | */ | |
1067 | #ifdef CONFIG_PM | |
1068 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1069 | { | |
1070 | int retval; | |
1071 | ||
1072 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1073 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1074 | ||
1075 | /* | |
1076 | * Only continue if mac80211 has open interfaces. | |
1077 | */ | |
1078 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1079 | goto exit; | |
6d7f9877 | 1080 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
95ea3627 ID |
1081 | |
1082 | /* | |
1682fe6d | 1083 | * Disable radio. |
95ea3627 | 1084 | */ |
e37ea213 | 1085 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1086 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1087 | |
1088 | /* | |
1089 | * Suspend/disable extra components. | |
1090 | */ | |
a9450b70 | 1091 | rt2x00leds_suspend(rt2x00dev); |
1682fe6d | 1092 | rt2x00rfkill_suspend(rt2x00dev); |
95ea3627 ID |
1093 | rt2x00debug_deregister(rt2x00dev); |
1094 | ||
066cb637 | 1095 | exit: |
95ea3627 | 1096 | /* |
9896322a ID |
1097 | * Set device mode to sleep for power management, |
1098 | * on some hardware this call seems to consistently fail. | |
1099 | * From the specifications it is hard to tell why it fails, | |
1100 | * and if this is a "bad thing". | |
1101 | * Overall it is safe to just ignore the failure and | |
1102 | * continue suspending. The only downside is that the | |
1103 | * device will not be in optimal power save mode, but with | |
1104 | * the radio and the other components already disabled the | |
1105 | * device is as good as disabled. | |
95ea3627 ID |
1106 | */ |
1107 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1108 | if (retval) | |
9896322a ID |
1109 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1110 | "continue suspending.\n"); | |
95ea3627 ID |
1111 | |
1112 | return 0; | |
1113 | } | |
1114 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1115 | ||
6bb40dd1 ID |
1116 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1117 | struct ieee80211_vif *vif) | |
1118 | { | |
1119 | struct rt2x00_dev *rt2x00dev = data; | |
1120 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1121 | ||
1122 | spin_lock(&intf->lock); | |
1123 | ||
1124 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1125 | vif->type, intf->mac, intf->bssid); | |
1126 | ||
1127 | ||
1128 | /* | |
1129 | * Master or Ad-hoc mode require a new beacon update. | |
1130 | */ | |
1131 | if (vif->type == IEEE80211_IF_TYPE_AP || | |
1132 | vif->type == IEEE80211_IF_TYPE_IBSS) | |
1133 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
1134 | ||
1135 | spin_unlock(&intf->lock); | |
1136 | } | |
1137 | ||
95ea3627 ID |
1138 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1139 | { | |
95ea3627 ID |
1140 | int retval; |
1141 | ||
1142 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1143 | |
1144 | /* | |
1682fe6d | 1145 | * Restore/enable extra components. |
95ea3627 ID |
1146 | */ |
1147 | rt2x00debug_register(rt2x00dev); | |
1682fe6d | 1148 | rt2x00rfkill_resume(rt2x00dev); |
a9450b70 | 1149 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1150 | |
066cb637 | 1151 | /* |
6d7f9877 | 1152 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1153 | */ |
6d7f9877 | 1154 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1155 | return 0; |
1156 | ||
95ea3627 ID |
1157 | /* |
1158 | * Reinitialize device and all active interfaces. | |
1159 | */ | |
e37ea213 | 1160 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1161 | if (retval) |
1162 | goto exit; | |
1163 | ||
1164 | /* | |
1165 | * Reconfigure device. | |
1166 | */ | |
066cb637 ID |
1167 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
1168 | if (!rt2x00dev->hw->conf.radio_enabled) | |
1169 | rt2x00lib_disable_radio(rt2x00dev); | |
95ea3627 | 1170 | |
6bb40dd1 ID |
1171 | /* |
1172 | * Iterator over each active interface to | |
1173 | * reconfigure the hardware. | |
1174 | */ | |
1175 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1176 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1177 | |
e37ea213 ID |
1178 | /* |
1179 | * We are ready again to receive requests from mac80211. | |
1180 | */ | |
1181 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); | |
1182 | ||
066cb637 ID |
1183 | /* |
1184 | * It is possible that during that mac80211 has attempted | |
1185 | * to send frames while we were suspending or resuming. | |
1186 | * In that case we have disabled the TX queue and should | |
1187 | * now enable it again | |
1188 | */ | |
36d6825b | 1189 | ieee80211_wake_queues(rt2x00dev->hw); |
066cb637 | 1190 | |
95ea3627 | 1191 | /* |
6bb40dd1 ID |
1192 | * During interface iteration we might have changed the |
1193 | * delayed_flags, time to handles the event by calling | |
1194 | * the work handler directly. | |
95ea3627 | 1195 | */ |
6bb40dd1 | 1196 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1197 | |
95ea3627 ID |
1198 | return 0; |
1199 | ||
1200 | exit: | |
1201 | rt2x00lib_disable_radio(rt2x00dev); | |
1202 | rt2x00lib_uninitialize(rt2x00dev); | |
1203 | rt2x00debug_deregister(rt2x00dev); | |
1204 | ||
95ea3627 ID |
1205 | return retval; |
1206 | } | |
1207 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1208 | #endif /* CONFIG_PM */ | |
1209 | ||
1210 | /* | |
1211 | * rt2x00lib module information. | |
1212 | */ | |
1213 | MODULE_AUTHOR(DRV_PROJECT); | |
1214 | MODULE_VERSION(DRV_VERSION); | |
1215 | MODULE_DESCRIPTION("rt2x00 library"); | |
1216 | MODULE_LICENSE("GPL"); |