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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" | |
4d8dd66c | 31 | #include "rt2x00dump.h" |
95ea3627 | 32 | |
95ea3627 ID |
33 | /* |
34 | * Link tuning handlers | |
35 | */ | |
53b3f8e4 | 36 | void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 37 | { |
53b3f8e4 ID |
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 | */ | |
8de8c516 ID |
49 | rt2x00dev->link.count = 0; |
50 | rt2x00dev->link.vgc_level = 0; | |
51 | ||
53b3f8e4 ID |
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 | */ | |
8de8c516 ID |
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; | |
95ea3627 | 75 | |
53b3f8e4 | 76 | rt2x00lib_reset_link_tuner(rt2x00dev); |
95ea3627 ID |
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 | { | |
3e30968e | 84 | cancel_delayed_work_sync(&rt2x00dev->link.work); |
95ea3627 ID |
85 | } |
86 | ||
95ea3627 ID |
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) || | |
81873e9c | 99 | test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags)) |
95ea3627 ID |
100 | return 0; |
101 | ||
837e7f24 | 102 | /* |
181d6902 | 103 | * Initialize all data queues. |
837e7f24 | 104 | */ |
181d6902 ID |
105 | rt2x00queue_init_rx(rt2x00dev); |
106 | rt2x00queue_init_tx(rt2x00dev); | |
837e7f24 | 107 | |
95ea3627 ID |
108 | /* |
109 | * Enable radio. | |
110 | */ | |
111 | status = rt2x00dev->ops->lib->set_device_state(rt2x00dev, | |
112 | STATE_RADIO_ON); | |
113 | if (status) | |
114 | return status; | |
115 | ||
116 | __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags); | |
117 | ||
118 | /* | |
119 | * Enable RX. | |
120 | */ | |
5cbf830e | 121 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
122 | |
123 | /* | |
124 | * Start the TX queues. | |
125 | */ | |
126 | ieee80211_start_queues(rt2x00dev->hw); | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
132 | { | |
133 | if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
134 | return; | |
135 | ||
136 | /* | |
4150c572 | 137 | * Stop all scheduled work. |
95ea3627 | 138 | */ |
6bb40dd1 ID |
139 | if (work_pending(&rt2x00dev->intf_work)) |
140 | cancel_work_sync(&rt2x00dev->intf_work); | |
4150c572 JB |
141 | if (work_pending(&rt2x00dev->filter_work)) |
142 | cancel_work_sync(&rt2x00dev->filter_work); | |
95ea3627 ID |
143 | |
144 | /* | |
145 | * Stop the TX queues. | |
146 | */ | |
147 | ieee80211_stop_queues(rt2x00dev->hw); | |
148 | ||
149 | /* | |
150 | * Disable RX. | |
151 | */ | |
5cbf830e | 152 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
153 | |
154 | /* | |
155 | * Disable radio. | |
156 | */ | |
157 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
158 | } | |
159 | ||
5cbf830e | 160 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 161 | { |
95ea3627 ID |
162 | /* |
163 | * When we are disabling the RX, we should also stop the link tuner. | |
164 | */ | |
5cbf830e | 165 | if (state == STATE_RADIO_RX_OFF) |
95ea3627 ID |
166 | rt2x00lib_stop_link_tuner(rt2x00dev); |
167 | ||
168 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
169 | ||
170 | /* | |
171 | * When we are enabling the RX, we should also start the link tuner. | |
172 | */ | |
5cbf830e | 173 | if (state == STATE_RADIO_RX_ON && |
6bb40dd1 | 174 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
95ea3627 ID |
175 | rt2x00lib_start_link_tuner(rt2x00dev); |
176 | } | |
177 | ||
69f81a2c ID |
178 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
179 | { | |
180 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
181 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
182 | int sample_a = | |
183 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); | |
184 | int sample_b = | |
185 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); | |
186 | ||
187 | /* | |
188 | * We are done sampling. Now we should evaluate the results. | |
189 | */ | |
190 | rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE; | |
191 | ||
192 | /* | |
193 | * During the last period we have sampled the RSSI | |
194 | * from both antenna's. It now is time to determine | |
195 | * which antenna demonstrated the best performance. | |
196 | * When we are already on the antenna with the best | |
197 | * performance, then there really is nothing for us | |
198 | * left to do. | |
199 | */ | |
200 | if (sample_a == sample_b) | |
201 | return; | |
202 | ||
05253c93 ID |
203 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
204 | rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c | 205 | |
05253c93 ID |
206 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
207 | tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c ID |
208 | |
209 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
210 | } | |
211 | ||
212 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) | |
213 | { | |
214 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
215 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
216 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); | |
217 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); | |
218 | ||
219 | /* | |
220 | * Legacy driver indicates that we should swap antenna's | |
221 | * when the difference in RSSI is greater that 5. This | |
222 | * also should be done when the RSSI was actually better | |
223 | * then the previous sample. | |
224 | * When the difference exceeds the threshold we should | |
225 | * sample the rssi from the other antenna to make a valid | |
226 | * comparison between the 2 antennas. | |
227 | */ | |
b290d433 | 228 | if (abs(rssi_curr - rssi_old) < 5) |
69f81a2c ID |
229 | return; |
230 | ||
231 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; | |
232 | ||
233 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) | |
234 | rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
235 | ||
236 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) | |
237 | tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
238 | ||
239 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
240 | } | |
241 | ||
242 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) | |
243 | { | |
244 | /* | |
245 | * Determine if software diversity is enabled for | |
246 | * either the TX or RX antenna (or both). | |
247 | * Always perform this check since within the link | |
248 | * tuner interval the configuration might have changed. | |
249 | */ | |
250 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; | |
251 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; | |
252 | ||
253 | if (rt2x00dev->hw->conf.antenna_sel_rx == 0 && | |
b290d433 | 254 | rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
255 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
256 | if (rt2x00dev->hw->conf.antenna_sel_tx == 0 && | |
b290d433 | 257 | rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
258 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
259 | ||
260 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && | |
261 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { | |
05253c93 | 262 | rt2x00dev->link.ant.flags = 0; |
69f81a2c ID |
263 | return; |
264 | } | |
265 | ||
266 | /* | |
267 | * If we have only sampled the data over the last period | |
268 | * we should now harvest the data. Otherwise just evaluate | |
269 | * the data. The latter should only be performed once | |
270 | * every 2 seconds. | |
271 | */ | |
272 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) | |
273 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); | |
274 | else if (rt2x00dev->link.count & 1) | |
275 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); | |
276 | } | |
277 | ||
278 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) | |
279 | { | |
280 | int avg_rssi = rssi; | |
281 | ||
282 | /* | |
283 | * Update global RSSI | |
284 | */ | |
285 | if (link->qual.avg_rssi) | |
286 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); | |
287 | link->qual.avg_rssi = avg_rssi; | |
288 | ||
289 | /* | |
290 | * Update antenna RSSI | |
291 | */ | |
292 | if (link->ant.rssi_ant) | |
293 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); | |
294 | link->ant.rssi_ant = rssi; | |
295 | } | |
296 | ||
ebcf26da | 297 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
95ea3627 | 298 | { |
ebcf26da ID |
299 | if (qual->rx_failed || qual->rx_success) |
300 | qual->rx_percentage = | |
301 | (qual->rx_success * 100) / | |
302 | (qual->rx_failed + qual->rx_success); | |
95ea3627 | 303 | else |
ebcf26da | 304 | qual->rx_percentage = 50; |
95ea3627 | 305 | |
ebcf26da ID |
306 | if (qual->tx_failed || qual->tx_success) |
307 | qual->tx_percentage = | |
308 | (qual->tx_success * 100) / | |
309 | (qual->tx_failed + qual->tx_success); | |
95ea3627 | 310 | else |
ebcf26da | 311 | qual->tx_percentage = 50; |
95ea3627 | 312 | |
ebcf26da ID |
313 | qual->rx_success = 0; |
314 | qual->rx_failed = 0; | |
315 | qual->tx_success = 0; | |
316 | qual->tx_failed = 0; | |
95ea3627 ID |
317 | } |
318 | ||
319 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, | |
320 | int rssi) | |
321 | { | |
322 | int rssi_percentage = 0; | |
323 | int signal; | |
324 | ||
325 | /* | |
326 | * We need a positive value for the RSSI. | |
327 | */ | |
328 | if (rssi < 0) | |
329 | rssi += rt2x00dev->rssi_offset; | |
330 | ||
331 | /* | |
332 | * Calculate the different percentages, | |
333 | * which will be used for the signal. | |
334 | */ | |
335 | if (rt2x00dev->rssi_offset) | |
336 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; | |
337 | ||
338 | /* | |
339 | * Add the individual percentages and use the WEIGHT | |
340 | * defines to calculate the current link signal. | |
341 | */ | |
342 | signal = ((WEIGHT_RSSI * rssi_percentage) + | |
ebcf26da ID |
343 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
344 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; | |
95ea3627 ID |
345 | |
346 | return (signal > 100) ? 100 : signal; | |
347 | } | |
348 | ||
349 | static void rt2x00lib_link_tuner(struct work_struct *work) | |
350 | { | |
351 | struct rt2x00_dev *rt2x00dev = | |
352 | container_of(work, struct rt2x00_dev, link.work.work); | |
353 | ||
25ab002f ID |
354 | /* |
355 | * When the radio is shutting down we should | |
356 | * immediately cease all link tuning. | |
357 | */ | |
358 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
359 | return; | |
360 | ||
95ea3627 ID |
361 | /* |
362 | * Update statistics. | |
363 | */ | |
ebcf26da | 364 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
95ea3627 | 365 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
ebcf26da | 366 | rt2x00dev->link.qual.rx_failed; |
95ea3627 | 367 | |
95ea3627 ID |
368 | /* |
369 | * Only perform the link tuning when Link tuning | |
370 | * has been enabled (This could have been disabled from the EEPROM). | |
371 | */ | |
372 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) | |
373 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); | |
374 | ||
725d99d4 ID |
375 | /* |
376 | * Precalculate a portion of the link signal which is | |
377 | * in based on the tx/rx success/failure counters. | |
378 | */ | |
ebcf26da | 379 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
725d99d4 | 380 | |
a9450b70 ID |
381 | /* |
382 | * Send a signal to the led to update the led signal strength. | |
383 | */ | |
384 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); | |
385 | ||
53b3f8e4 ID |
386 | /* |
387 | * Evaluate antenna setup, make this the last step since this could | |
388 | * possibly reset some statistics. | |
389 | */ | |
390 | rt2x00lib_evaluate_antenna(rt2x00dev); | |
391 | ||
95ea3627 ID |
392 | /* |
393 | * Increase tuner counter, and reschedule the next link tuner run. | |
394 | */ | |
395 | rt2x00dev->link.count++; | |
396 | queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work, | |
397 | LINK_TUNE_INTERVAL); | |
398 | } | |
399 | ||
4150c572 JB |
400 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
401 | { | |
402 | struct rt2x00_dev *rt2x00dev = | |
403 | container_of(work, struct rt2x00_dev, filter_work); | |
3c4f2085 | 404 | unsigned int filter = rt2x00dev->packet_filter; |
5886d0db ID |
405 | |
406 | /* | |
6bb40dd1 | 407 | * Since we had stored the filter inside rt2x00dev->packet_filter, |
5886d0db ID |
408 | * we should now clear that field. Otherwise the driver will |
409 | * assume nothing has changed (*total_flags will be compared | |
6bb40dd1 | 410 | * to rt2x00dev->packet_filter to determine if any action is required). |
5886d0db | 411 | */ |
3c4f2085 | 412 | rt2x00dev->packet_filter = 0; |
4150c572 JB |
413 | |
414 | rt2x00dev->ops->hw->configure_filter(rt2x00dev->hw, | |
5886d0db | 415 | filter, &filter, 0, NULL); |
4150c572 JB |
416 | } |
417 | ||
6bb40dd1 ID |
418 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
419 | struct ieee80211_vif *vif) | |
5c58ee51 | 420 | { |
6bb40dd1 ID |
421 | struct rt2x00_dev *rt2x00dev = data; |
422 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
423 | struct sk_buff *skb; | |
424 | struct ieee80211_tx_control control; | |
425 | struct ieee80211_bss_conf conf; | |
426 | int delayed_flags; | |
427 | ||
428 | /* | |
429 | * Copy all data we need during this action under the protection | |
430 | * of a spinlock. Otherwise race conditions might occur which results | |
431 | * into an invalid configuration. | |
432 | */ | |
433 | spin_lock(&intf->lock); | |
434 | ||
435 | memcpy(&conf, &intf->conf, sizeof(conf)); | |
436 | delayed_flags = intf->delayed_flags; | |
437 | intf->delayed_flags = 0; | |
438 | ||
439 | spin_unlock(&intf->lock); | |
440 | ||
441 | if (delayed_flags & DELAYED_UPDATE_BEACON) { | |
442 | skb = ieee80211_beacon_get(rt2x00dev->hw, vif, &control); | |
443 | if (skb) { | |
444 | rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb, | |
445 | &control); | |
446 | dev_kfree_skb(skb); | |
447 | } | |
448 | } | |
449 | ||
450 | if (delayed_flags & DELAYED_CONFIG_PREAMBLE) | |
451 | rt2x00lib_config_preamble(rt2x00dev, intf, | |
452 | intf->conf.use_short_preamble); | |
453 | } | |
5c58ee51 | 454 | |
6bb40dd1 ID |
455 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
456 | { | |
457 | struct rt2x00_dev *rt2x00dev = | |
458 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
459 | |
460 | /* | |
6bb40dd1 ID |
461 | * Iterate over each interface and perform the |
462 | * requested configurations. | |
471b3efd | 463 | */ |
6bb40dd1 ID |
464 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
465 | rt2x00lib_intf_scheduled_iter, | |
466 | rt2x00dev); | |
5c58ee51 ID |
467 | } |
468 | ||
95ea3627 ID |
469 | /* |
470 | * Interrupt context handlers. | |
471 | */ | |
6bb40dd1 ID |
472 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
473 | struct ieee80211_vif *vif) | |
95ea3627 | 474 | { |
6bb40dd1 | 475 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 476 | |
6bb40dd1 ID |
477 | if (vif->type != IEEE80211_IF_TYPE_AP && |
478 | vif->type != IEEE80211_IF_TYPE_IBSS) | |
95ea3627 ID |
479 | return; |
480 | ||
6bb40dd1 ID |
481 | spin_lock(&intf->lock); |
482 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
483 | spin_unlock(&intf->lock); | |
95ea3627 ID |
484 | } |
485 | ||
486 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
487 | { | |
488 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
489 | return; | |
490 | ||
6bb40dd1 ID |
491 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
492 | rt2x00lib_beacondone_iter, | |
493 | rt2x00dev); | |
494 | ||
495 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); | |
95ea3627 ID |
496 | } |
497 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
498 | ||
181d6902 ID |
499 | void rt2x00lib_txdone(struct queue_entry *entry, |
500 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 501 | { |
181d6902 | 502 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
baf26a7e | 503 | struct skb_frame_desc *skbdesc; |
181d6902 ID |
504 | struct ieee80211_tx_status tx_status; |
505 | int success = !!(txdesc->status == TX_SUCCESS || | |
506 | txdesc->status == TX_SUCCESS_RETRY); | |
507 | int fail = !!(txdesc->status == TX_FAIL_RETRY || | |
508 | txdesc->status == TX_FAIL_INVALID || | |
509 | txdesc->status == TX_FAIL_OTHER); | |
95ea3627 ID |
510 | |
511 | /* | |
512 | * Update TX statistics. | |
513 | */ | |
ebcf26da | 514 | rt2x00dev->link.qual.tx_success += success; |
181d6902 | 515 | rt2x00dev->link.qual.tx_failed += txdesc->retry + fail; |
95ea3627 | 516 | |
181d6902 ID |
517 | /* |
518 | * Initialize TX status | |
519 | */ | |
520 | tx_status.flags = 0; | |
521 | tx_status.ack_signal = 0; | |
522 | tx_status.excessive_retries = (txdesc->status == TX_FAIL_RETRY); | |
523 | tx_status.retry_count = txdesc->retry; | |
95db4d4d | 524 | memcpy(&tx_status.control, txdesc->control, sizeof(*txdesc->control)); |
181d6902 ID |
525 | |
526 | if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) { | |
95ea3627 | 527 | if (success) |
181d6902 | 528 | tx_status.flags |= IEEE80211_TX_STATUS_ACK; |
95ea3627 | 529 | else |
181d6902 | 530 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
531 | } |
532 | ||
181d6902 ID |
533 | tx_status.queue_length = entry->queue->limit; |
534 | tx_status.queue_number = tx_status.control.queue; | |
95ea3627 | 535 | |
181d6902 | 536 | if (tx_status.control.flags & IEEE80211_TXCTL_USE_RTS_CTS) { |
95ea3627 | 537 | if (success) |
181d6902 | 538 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
95ea3627 | 539 | else |
181d6902 | 540 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
541 | } |
542 | ||
543 | /* | |
baf26a7e ID |
544 | * Send the tx_status to debugfs. Only send the status report |
545 | * to mac80211 when the frame originated from there. If this was | |
546 | * a extra frame coming through a mac80211 library call (RTS/CTS) | |
547 | * then we should not send the status report back. | |
548 | * If send to mac80211, mac80211 will clean up the skb structure, | |
549 | * otherwise we have to do it ourself. | |
95ea3627 | 550 | */ |
baf26a7e ID |
551 | skbdesc = get_skb_frame_desc(entry->skb); |
552 | skbdesc->frame_type = DUMP_FRAME_TXDONE; | |
553 | ||
4d8dd66c | 554 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); |
baf26a7e ID |
555 | |
556 | if (!(skbdesc->flags & FRAME_DESC_DRIVER_GENERATED)) | |
557 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, | |
558 | entry->skb, &tx_status); | |
559 | else | |
560 | dev_kfree_skb(entry->skb); | |
95ea3627 ID |
561 | entry->skb = NULL; |
562 | } | |
563 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
564 | ||
181d6902 ID |
565 | void rt2x00lib_rxdone(struct queue_entry *entry, |
566 | struct rxdone_entry_desc *rxdesc) | |
95ea3627 | 567 | { |
181d6902 | 568 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
95ea3627 | 569 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 570 | struct ieee80211_supported_band *sband; |
61af43c5 | 571 | struct ieee80211_hdr *hdr; |
70e2fed4 | 572 | const struct rt2x00_rate *rate; |
95ea3627 | 573 | unsigned int i; |
70e2fed4 | 574 | int idx = -1; |
61af43c5 | 575 | u16 fc; |
95ea3627 ID |
576 | |
577 | /* | |
578 | * Update RX statistics. | |
579 | */ | |
8318d78a JB |
580 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
581 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 582 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 ID |
583 | |
584 | /* | |
585 | * When frame was received with an OFDM bitrate, | |
586 | * the signal is the PLCP value. If it was received with | |
70e2fed4 | 587 | * a CCK bitrate the signal is the rate in 100kbit/s. |
95ea3627 | 588 | */ |
70e2fed4 ID |
589 | if ((rxdesc->ofdm && rate->plcp == rxdesc->signal) || |
590 | (!rxdesc->ofdm && rate->bitrate == rxdesc->signal)) { | |
8318d78a | 591 | idx = i; |
95ea3627 ID |
592 | break; |
593 | } | |
594 | } | |
595 | ||
61af43c5 | 596 | /* |
7e56d38d | 597 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 598 | */ |
70e2fed4 | 599 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
7e56d38d | 600 | fc = le16_to_cpu(hdr->frame_control); |
181d6902 ID |
601 | if (is_beacon(fc) && rxdesc->my_bss) |
602 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi); | |
61af43c5 | 603 | |
ebcf26da | 604 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 605 | |
8318d78a | 606 | rx_status->rate_idx = idx; |
4150c572 | 607 | rx_status->signal = |
181d6902 ID |
608 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi); |
609 | rx_status->ssi = rxdesc->rssi; | |
610 | rx_status->flag = rxdesc->flags; | |
69f81a2c | 611 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
612 | |
613 | /* | |
181d6902 ID |
614 | * Send frame to mac80211 & debugfs. |
615 | * mac80211 will clean up the skb structure. | |
95ea3627 | 616 | */ |
181d6902 ID |
617 | get_skb_frame_desc(entry->skb)->frame_type = DUMP_FRAME_RXDONE; |
618 | rt2x00debug_dump_frame(rt2x00dev, entry->skb); | |
619 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); | |
620 | entry->skb = NULL; | |
95ea3627 ID |
621 | } |
622 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
623 | ||
624 | /* | |
625 | * TX descriptor initializer | |
626 | */ | |
627 | void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev, | |
08992f7f | 628 | struct sk_buff *skb, |
95ea3627 ID |
629 | struct ieee80211_tx_control *control) |
630 | { | |
181d6902 ID |
631 | struct txentry_desc txdesc; |
632 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); | |
70e2fed4 ID |
633 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
634 | const struct rt2x00_rate *rate; | |
95ea3627 | 635 | int tx_rate; |
08992f7f | 636 | int length; |
95ea3627 ID |
637 | int duration; |
638 | int residual; | |
639 | u16 frame_control; | |
640 | u16 seq_ctrl; | |
641 | ||
181d6902 | 642 | memset(&txdesc, 0, sizeof(txdesc)); |
95ea3627 | 643 | |
091ed315 | 644 | txdesc.queue = skbdesc->entry->queue->qid; |
181d6902 ID |
645 | txdesc.cw_min = skbdesc->entry->queue->cw_min; |
646 | txdesc.cw_max = skbdesc->entry->queue->cw_max; | |
647 | txdesc.aifs = skbdesc->entry->queue->aifs; | |
95ea3627 | 648 | |
95ea3627 ID |
649 | /* |
650 | * Read required fields from ieee80211 header. | |
651 | */ | |
70e2fed4 ID |
652 | frame_control = le16_to_cpu(hdr->frame_control); |
653 | seq_ctrl = le16_to_cpu(hdr->seq_ctrl); | |
95ea3627 | 654 | |
8318d78a | 655 | tx_rate = control->tx_rate->hw_value; |
95ea3627 | 656 | |
2700f8b0 MN |
657 | /* |
658 | * Check whether this frame is to be acked | |
659 | */ | |
660 | if (!(control->flags & IEEE80211_TXCTL_NO_ACK)) | |
181d6902 | 661 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); |
2700f8b0 | 662 | |
95ea3627 ID |
663 | /* |
664 | * Check if this is a RTS/CTS frame | |
665 | */ | |
666 | if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) { | |
181d6902 | 667 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
2700f8b0 | 668 | if (is_rts_frame(frame_control)) { |
181d6902 ID |
669 | __set_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags); |
670 | __set_bit(ENTRY_TXD_ACK, &txdesc.flags); | |
2700f8b0 | 671 | } else |
181d6902 | 672 | __clear_bit(ENTRY_TXD_ACK, &txdesc.flags); |
95ea3627 | 673 | if (control->rts_cts_rate) |
8318d78a | 674 | tx_rate = control->rts_cts_rate->hw_value; |
95ea3627 ID |
675 | } |
676 | ||
70e2fed4 | 677 | rate = rt2x00_get_rate(tx_rate); |
95ea3627 ID |
678 | |
679 | /* | |
680 | * Check if more fragments are pending | |
681 | */ | |
70e2fed4 | 682 | if (ieee80211_get_morefrag(hdr)) { |
181d6902 ID |
683 | __set_bit(ENTRY_TXD_BURST, &txdesc.flags); |
684 | __set_bit(ENTRY_TXD_MORE_FRAG, &txdesc.flags); | |
95ea3627 ID |
685 | } |
686 | ||
687 | /* | |
688 | * Beacons and probe responses require the tsf timestamp | |
689 | * to be inserted into the frame. | |
690 | */ | |
5957da4c | 691 | if (control->queue == RT2X00_BCN_QUEUE_BEACON || |
95ea3627 | 692 | is_probe_resp(frame_control)) |
181d6902 | 693 | __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc.flags); |
95ea3627 ID |
694 | |
695 | /* | |
696 | * Determine with what IFS priority this frame should be send. | |
697 | * Set ifs to IFS_SIFS when the this is not the first fragment, | |
698 | * or this fragment came after RTS/CTS. | |
699 | */ | |
700 | if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 || | |
181d6902 ID |
701 | test_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags)) |
702 | txdesc.ifs = IFS_SIFS; | |
95ea3627 | 703 | else |
181d6902 | 704 | txdesc.ifs = IFS_BACKOFF; |
95ea3627 ID |
705 | |
706 | /* | |
707 | * PLCP setup | |
708 | * Length calculation depends on OFDM/CCK rate. | |
709 | */ | |
70e2fed4 | 710 | txdesc.signal = rate->plcp; |
181d6902 | 711 | txdesc.service = 0x04; |
95ea3627 | 712 | |
181d6902 | 713 | length = skb->len + FCS_LEN; |
70e2fed4 ID |
714 | if (rate->flags & DEV_RATE_OFDM) { |
715 | __set_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags); | |
716 | ||
181d6902 ID |
717 | txdesc.length_high = (length >> 6) & 0x3f; |
718 | txdesc.length_low = length & 0x3f; | |
95ea3627 | 719 | } else { |
95ea3627 ID |
720 | /* |
721 | * Convert length to microseconds. | |
722 | */ | |
70e2fed4 ID |
723 | residual = get_duration_res(length, rate->bitrate); |
724 | duration = get_duration(length, rate->bitrate); | |
95ea3627 ID |
725 | |
726 | if (residual != 0) { | |
727 | duration++; | |
728 | ||
729 | /* | |
730 | * Check if we need to set the Length Extension | |
731 | */ | |
70e2fed4 | 732 | if (rate->bitrate == 110 && residual <= 30) |
181d6902 | 733 | txdesc.service |= 0x80; |
95ea3627 ID |
734 | } |
735 | ||
181d6902 ID |
736 | txdesc.length_high = (duration >> 8) & 0xff; |
737 | txdesc.length_low = duration & 0xff; | |
95ea3627 ID |
738 | |
739 | /* | |
740 | * When preamble is enabled we should set the | |
741 | * preamble bit for the signal. | |
742 | */ | |
70e2fed4 | 743 | if (rt2x00_get_rate_preamble(tx_rate)) |
181d6902 | 744 | txdesc.signal |= 0x08; |
95ea3627 ID |
745 | } |
746 | ||
181d6902 | 747 | rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &txdesc, control); |
08992f7f ID |
748 | |
749 | /* | |
181d6902 | 750 | * Update queue entry. |
08992f7f ID |
751 | */ |
752 | skbdesc->entry->skb = skb; | |
4d8dd66c ID |
753 | |
754 | /* | |
755 | * The frame has been completely initialized and ready | |
756 | * for sending to the device. The caller will push the | |
757 | * frame to the device, but we are going to push the | |
758 | * frame to debugfs here. | |
759 | */ | |
760 | skbdesc->frame_type = DUMP_FRAME_TX; | |
761 | rt2x00debug_dump_frame(rt2x00dev, skb); | |
95ea3627 ID |
762 | } |
763 | EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc); | |
764 | ||
765 | /* | |
766 | * Driver initialization handlers. | |
767 | */ | |
70e2fed4 ID |
768 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
769 | { | |
31562e80 | 770 | .flags = DEV_RATE_CCK, |
70e2fed4 ID |
771 | .bitrate = 10, |
772 | .ratemask = DEV_RATEMASK_1MB, | |
773 | .plcp = 0x00, | |
774 | }, | |
775 | { | |
31562e80 | 776 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 ID |
777 | .bitrate = 20, |
778 | .ratemask = DEV_RATEMASK_2MB, | |
779 | .plcp = 0x01, | |
780 | }, | |
781 | { | |
31562e80 | 782 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 ID |
783 | .bitrate = 55, |
784 | .ratemask = DEV_RATEMASK_5_5MB, | |
785 | .plcp = 0x02, | |
786 | }, | |
787 | { | |
31562e80 | 788 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 ID |
789 | .bitrate = 110, |
790 | .ratemask = DEV_RATEMASK_11MB, | |
791 | .plcp = 0x03, | |
792 | }, | |
793 | { | |
794 | .flags = DEV_RATE_OFDM, | |
795 | .bitrate = 60, | |
796 | .ratemask = DEV_RATEMASK_6MB, | |
797 | .plcp = 0x0b, | |
798 | }, | |
799 | { | |
800 | .flags = DEV_RATE_OFDM, | |
801 | .bitrate = 90, | |
802 | .ratemask = DEV_RATEMASK_9MB, | |
803 | .plcp = 0x0f, | |
804 | }, | |
805 | { | |
806 | .flags = DEV_RATE_OFDM, | |
807 | .bitrate = 120, | |
808 | .ratemask = DEV_RATEMASK_12MB, | |
809 | .plcp = 0x0a, | |
810 | }, | |
811 | { | |
812 | .flags = DEV_RATE_OFDM, | |
813 | .bitrate = 180, | |
814 | .ratemask = DEV_RATEMASK_18MB, | |
815 | .plcp = 0x0e, | |
816 | }, | |
817 | { | |
818 | .flags = DEV_RATE_OFDM, | |
819 | .bitrate = 240, | |
820 | .ratemask = DEV_RATEMASK_24MB, | |
821 | .plcp = 0x09, | |
822 | }, | |
823 | { | |
824 | .flags = DEV_RATE_OFDM, | |
825 | .bitrate = 360, | |
826 | .ratemask = DEV_RATEMASK_36MB, | |
827 | .plcp = 0x0d, | |
828 | }, | |
829 | { | |
830 | .flags = DEV_RATE_OFDM, | |
831 | .bitrate = 480, | |
832 | .ratemask = DEV_RATEMASK_48MB, | |
833 | .plcp = 0x08, | |
834 | }, | |
835 | { | |
836 | .flags = DEV_RATE_OFDM, | |
837 | .bitrate = 540, | |
838 | .ratemask = DEV_RATEMASK_54MB, | |
839 | .plcp = 0x0c, | |
840 | }, | |
841 | }; | |
842 | ||
95ea3627 ID |
843 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
844 | const int channel, const int tx_power, | |
845 | const int value) | |
846 | { | |
f2a3c7f5 | 847 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
848 | entry->hw_value = value; |
849 | entry->max_power = tx_power; | |
850 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
851 | } |
852 | ||
853 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 854 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 855 | { |
70e2fed4 ID |
856 | entry->flags = 0; |
857 | entry->bitrate = rate->bitrate; | |
858 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 859 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
860 | |
861 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
862 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
863 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
864 | } | |
95ea3627 ID |
865 | } |
866 | ||
867 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
868 | struct hw_mode_spec *spec) | |
869 | { | |
870 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
871 | struct ieee80211_channel *channels; |
872 | struct ieee80211_rate *rates; | |
31562e80 | 873 | unsigned int num_rates; |
95ea3627 ID |
874 | unsigned int i; |
875 | unsigned char tx_power; | |
876 | ||
31562e80 ID |
877 | num_rates = 0; |
878 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
879 | num_rates += 4; | |
880 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
881 | num_rates += 8; | |
95ea3627 ID |
882 | |
883 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
884 | if (!channels) | |
8318d78a | 885 | return -ENOMEM; |
95ea3627 | 886 | |
31562e80 | 887 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
888 | if (!rates) |
889 | goto exit_free_channels; | |
890 | ||
891 | /* | |
892 | * Initialize Rate list. | |
893 | */ | |
31562e80 | 894 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 895 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
896 | |
897 | /* | |
898 | * Initialize Channel list. | |
899 | */ | |
900 | for (i = 0; i < spec->num_channels; i++) { | |
31562e80 ID |
901 | if (spec->channels[i].channel <= 14) { |
902 | if (spec->tx_power_bg) | |
903 | tx_power = spec->tx_power_bg[i]; | |
904 | else | |
905 | tx_power = spec->tx_power_default; | |
906 | } else { | |
907 | if (spec->tx_power_a) | |
908 | tx_power = spec->tx_power_a[i]; | |
909 | else | |
910 | tx_power = spec->tx_power_default; | |
911 | } | |
95ea3627 ID |
912 | |
913 | rt2x00lib_channel(&channels[i], | |
914 | spec->channels[i].channel, tx_power, i); | |
915 | } | |
916 | ||
917 | /* | |
31562e80 | 918 | * Intitialize 802.11b, 802.11g |
95ea3627 | 919 | * Rates: CCK, OFDM. |
8318d78a | 920 | * Channels: 2.4 GHz |
95ea3627 | 921 | */ |
47ac2683 | 922 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
923 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
924 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
925 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
926 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
927 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
928 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
929 | } |
930 | ||
931 | /* | |
932 | * Intitialize 802.11a | |
933 | * Rates: OFDM. | |
934 | * Channels: OFDM, UNII, HiperLAN2. | |
935 | */ | |
47ac2683 | 936 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
937 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
938 | spec->num_channels - 14; | |
939 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
940 | num_rates - 4; | |
941 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
942 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
943 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
944 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
945 | } |
946 | ||
95ea3627 ID |
947 | return 0; |
948 | ||
8318d78a | 949 | exit_free_channels: |
95ea3627 | 950 | kfree(channels); |
95ea3627 ID |
951 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
952 | return -ENOMEM; | |
953 | } | |
954 | ||
955 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
956 | { | |
066cb637 | 957 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
958 | ieee80211_unregister_hw(rt2x00dev->hw); |
959 | ||
8318d78a JB |
960 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
961 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
962 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
963 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
964 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 ID |
965 | } |
966 | } | |
967 | ||
968 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
969 | { | |
970 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
971 | int status; | |
972 | ||
973 | /* | |
974 | * Initialize HW modes. | |
975 | */ | |
976 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
977 | if (status) | |
978 | return status; | |
979 | ||
980 | /* | |
981 | * Register HW. | |
982 | */ | |
983 | status = ieee80211_register_hw(rt2x00dev->hw); | |
984 | if (status) { | |
985 | rt2x00lib_remove_hw(rt2x00dev); | |
986 | return status; | |
987 | } | |
988 | ||
066cb637 | 989 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
990 | |
991 | return 0; | |
992 | } | |
993 | ||
994 | /* | |
995 | * Initialization/uninitialization handlers. | |
996 | */ | |
e37ea213 | 997 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
998 | { |
999 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
1000 | return; | |
1001 | ||
1002 | /* | |
1003 | * Unregister rfkill. | |
1004 | */ | |
1005 | rt2x00rfkill_unregister(rt2x00dev); | |
1006 | ||
1007 | /* | |
1008 | * Allow the HW to uninitialize. | |
1009 | */ | |
1010 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
1011 | ||
1012 | /* | |
181d6902 | 1013 | * Free allocated queue entries. |
95ea3627 | 1014 | */ |
181d6902 | 1015 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
1016 | } |
1017 | ||
e37ea213 | 1018 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
1019 | { |
1020 | int status; | |
1021 | ||
1022 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
1023 | return 0; | |
1024 | ||
1025 | /* | |
181d6902 | 1026 | * Allocate all queue entries. |
95ea3627 | 1027 | */ |
181d6902 ID |
1028 | status = rt2x00queue_initialize(rt2x00dev); |
1029 | if (status) | |
95ea3627 | 1030 | return status; |
95ea3627 ID |
1031 | |
1032 | /* | |
1033 | * Initialize the device. | |
1034 | */ | |
1035 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
1036 | if (status) | |
1037 | goto exit; | |
1038 | ||
1039 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); | |
1040 | ||
1041 | /* | |
1042 | * Register the rfkill handler. | |
1043 | */ | |
1044 | status = rt2x00rfkill_register(rt2x00dev); | |
1045 | if (status) | |
181d6902 | 1046 | goto exit; |
95ea3627 ID |
1047 | |
1048 | return 0; | |
1049 | ||
95ea3627 | 1050 | exit: |
181d6902 | 1051 | rt2x00lib_uninitialize(rt2x00dev); |
95ea3627 ID |
1052 | |
1053 | return status; | |
1054 | } | |
1055 | ||
e37ea213 ID |
1056 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
1057 | { | |
1058 | int retval; | |
1059 | ||
1060 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1061 | return 0; | |
1062 | ||
1063 | /* | |
1064 | * If this is the first interface which is added, | |
1065 | * we should load the firmware now. | |
1066 | */ | |
9404ef34 ID |
1067 | retval = rt2x00lib_load_firmware(rt2x00dev); |
1068 | if (retval) | |
1069 | return retval; | |
e37ea213 ID |
1070 | |
1071 | /* | |
1072 | * Initialize the device. | |
1073 | */ | |
1074 | retval = rt2x00lib_initialize(rt2x00dev); | |
1075 | if (retval) | |
1076 | return retval; | |
1077 | ||
1078 | /* | |
1079 | * Enable radio. | |
1080 | */ | |
1081 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1082 | if (retval) { | |
1083 | rt2x00lib_uninitialize(rt2x00dev); | |
1084 | return retval; | |
1085 | } | |
1086 | ||
6bb40dd1 ID |
1087 | rt2x00dev->intf_ap_count = 0; |
1088 | rt2x00dev->intf_sta_count = 0; | |
1089 | rt2x00dev->intf_associated = 0; | |
1090 | ||
e37ea213 ID |
1091 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1097 | { | |
1098 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1099 | return; | |
1100 | ||
1101 | /* | |
1102 | * Perhaps we can add something smarter here, | |
1103 | * but for now just disabling the radio should do. | |
1104 | */ | |
1105 | rt2x00lib_disable_radio(rt2x00dev); | |
1106 | ||
6bb40dd1 ID |
1107 | rt2x00dev->intf_ap_count = 0; |
1108 | rt2x00dev->intf_sta_count = 0; | |
1109 | rt2x00dev->intf_associated = 0; | |
1110 | ||
e37ea213 ID |
1111 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
1112 | } | |
1113 | ||
95ea3627 ID |
1114 | /* |
1115 | * driver allocation handlers. | |
1116 | */ | |
95ea3627 ID |
1117 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1118 | { | |
1119 | int retval = -ENOMEM; | |
1120 | ||
6bb40dd1 ID |
1121 | /* |
1122 | * Make room for rt2x00_intf inside the per-interface | |
1123 | * structure ieee80211_vif. | |
1124 | */ | |
1125 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1126 | ||
95ea3627 ID |
1127 | /* |
1128 | * Let the driver probe the device to detect the capabilities. | |
1129 | */ | |
1130 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1131 | if (retval) { | |
1132 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1133 | goto exit; | |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * Initialize configuration work. | |
1138 | */ | |
6bb40dd1 | 1139 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 1140 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
1141 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
1142 | ||
95ea3627 | 1143 | /* |
181d6902 | 1144 | * Allocate queue array. |
95ea3627 | 1145 | */ |
181d6902 | 1146 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1147 | if (retval) |
1148 | goto exit; | |
1149 | ||
1150 | /* | |
1151 | * Initialize ieee80211 structure. | |
1152 | */ | |
1153 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1154 | if (retval) { | |
1155 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1156 | goto exit; | |
1157 | } | |
1158 | ||
a9450b70 ID |
1159 | /* |
1160 | * Register LED. | |
1161 | */ | |
1162 | rt2x00leds_register(rt2x00dev); | |
1163 | ||
95ea3627 ID |
1164 | /* |
1165 | * Allocatie rfkill. | |
1166 | */ | |
1167 | retval = rt2x00rfkill_allocate(rt2x00dev); | |
1168 | if (retval) | |
1169 | goto exit; | |
1170 | ||
1171 | /* | |
1172 | * Open the debugfs entry. | |
1173 | */ | |
1174 | rt2x00debug_register(rt2x00dev); | |
1175 | ||
066cb637 ID |
1176 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1177 | ||
95ea3627 ID |
1178 | return 0; |
1179 | ||
1180 | exit: | |
1181 | rt2x00lib_remove_dev(rt2x00dev); | |
1182 | ||
1183 | return retval; | |
1184 | } | |
1185 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1186 | ||
1187 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1188 | { | |
066cb637 ID |
1189 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1190 | ||
95ea3627 ID |
1191 | /* |
1192 | * Disable radio. | |
1193 | */ | |
1194 | rt2x00lib_disable_radio(rt2x00dev); | |
1195 | ||
1196 | /* | |
1197 | * Uninitialize device. | |
1198 | */ | |
1199 | rt2x00lib_uninitialize(rt2x00dev); | |
1200 | ||
1201 | /* | |
1202 | * Close debugfs entry. | |
1203 | */ | |
1204 | rt2x00debug_deregister(rt2x00dev); | |
1205 | ||
1206 | /* | |
1207 | * Free rfkill | |
1208 | */ | |
1209 | rt2x00rfkill_free(rt2x00dev); | |
1210 | ||
a9450b70 ID |
1211 | /* |
1212 | * Free LED. | |
1213 | */ | |
1214 | rt2x00leds_unregister(rt2x00dev); | |
1215 | ||
95ea3627 ID |
1216 | /* |
1217 | * Free ieee80211_hw memory. | |
1218 | */ | |
1219 | rt2x00lib_remove_hw(rt2x00dev); | |
1220 | ||
1221 | /* | |
1222 | * Free firmware image. | |
1223 | */ | |
1224 | rt2x00lib_free_firmware(rt2x00dev); | |
1225 | ||
1226 | /* | |
181d6902 | 1227 | * Free queue structures. |
95ea3627 | 1228 | */ |
181d6902 | 1229 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1230 | } |
1231 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1232 | ||
1233 | /* | |
1234 | * Device state handlers | |
1235 | */ | |
1236 | #ifdef CONFIG_PM | |
1237 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1238 | { | |
1239 | int retval; | |
1240 | ||
1241 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1242 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1243 | ||
1244 | /* | |
1245 | * Only continue if mac80211 has open interfaces. | |
1246 | */ | |
1247 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1248 | goto exit; | |
6d7f9877 | 1249 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
95ea3627 ID |
1250 | |
1251 | /* | |
1252 | * Disable radio and unitialize all items | |
1253 | * that must be recreated on resume. | |
1254 | */ | |
e37ea213 | 1255 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1256 | rt2x00lib_uninitialize(rt2x00dev); |
a9450b70 | 1257 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1258 | rt2x00debug_deregister(rt2x00dev); |
1259 | ||
066cb637 | 1260 | exit: |
95ea3627 ID |
1261 | /* |
1262 | * Set device mode to sleep for power management. | |
1263 | */ | |
1264 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1265 | if (retval) | |
1266 | return retval; | |
1267 | ||
1268 | return 0; | |
1269 | } | |
1270 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1271 | ||
6bb40dd1 ID |
1272 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1273 | struct ieee80211_vif *vif) | |
1274 | { | |
1275 | struct rt2x00_dev *rt2x00dev = data; | |
1276 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1277 | ||
1278 | spin_lock(&intf->lock); | |
1279 | ||
1280 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1281 | vif->type, intf->mac, intf->bssid); | |
1282 | ||
1283 | ||
1284 | /* | |
1285 | * Master or Ad-hoc mode require a new beacon update. | |
1286 | */ | |
1287 | if (vif->type == IEEE80211_IF_TYPE_AP || | |
1288 | vif->type == IEEE80211_IF_TYPE_IBSS) | |
1289 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
1290 | ||
1291 | spin_unlock(&intf->lock); | |
1292 | } | |
1293 | ||
95ea3627 ID |
1294 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1295 | { | |
95ea3627 ID |
1296 | int retval; |
1297 | ||
1298 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1299 | |
1300 | /* | |
a9450b70 | 1301 | * Open the debugfs entry and restore led handling. |
95ea3627 ID |
1302 | */ |
1303 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1304 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1305 | |
066cb637 | 1306 | /* |
6d7f9877 | 1307 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1308 | */ |
6d7f9877 | 1309 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1310 | return 0; |
1311 | ||
95ea3627 ID |
1312 | /* |
1313 | * Reinitialize device and all active interfaces. | |
1314 | */ | |
e37ea213 | 1315 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1316 | if (retval) |
1317 | goto exit; | |
1318 | ||
1319 | /* | |
1320 | * Reconfigure device. | |
1321 | */ | |
066cb637 ID |
1322 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
1323 | if (!rt2x00dev->hw->conf.radio_enabled) | |
1324 | rt2x00lib_disable_radio(rt2x00dev); | |
95ea3627 | 1325 | |
6bb40dd1 ID |
1326 | /* |
1327 | * Iterator over each active interface to | |
1328 | * reconfigure the hardware. | |
1329 | */ | |
1330 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1331 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1332 | |
e37ea213 ID |
1333 | /* |
1334 | * We are ready again to receive requests from mac80211. | |
1335 | */ | |
1336 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); | |
1337 | ||
066cb637 ID |
1338 | /* |
1339 | * It is possible that during that mac80211 has attempted | |
1340 | * to send frames while we were suspending or resuming. | |
1341 | * In that case we have disabled the TX queue and should | |
1342 | * now enable it again | |
1343 | */ | |
1344 | ieee80211_start_queues(rt2x00dev->hw); | |
1345 | ||
95ea3627 | 1346 | /* |
6bb40dd1 ID |
1347 | * During interface iteration we might have changed the |
1348 | * delayed_flags, time to handles the event by calling | |
1349 | * the work handler directly. | |
95ea3627 | 1350 | */ |
6bb40dd1 | 1351 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1352 | |
95ea3627 ID |
1353 | return 0; |
1354 | ||
1355 | exit: | |
1356 | rt2x00lib_disable_radio(rt2x00dev); | |
1357 | rt2x00lib_uninitialize(rt2x00dev); | |
1358 | rt2x00debug_deregister(rt2x00dev); | |
1359 | ||
95ea3627 ID |
1360 | return retval; |
1361 | } | |
1362 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1363 | #endif /* CONFIG_PM */ | |
1364 | ||
1365 | /* | |
1366 | * rt2x00lib module information. | |
1367 | */ | |
1368 | MODULE_AUTHOR(DRV_PROJECT); | |
1369 | MODULE_VERSION(DRV_VERSION); | |
1370 | MODULE_DESCRIPTION("rt2x00 library"); | |
1371 | MODULE_LICENSE("GPL"); |