Commit | Line | Data |
---|---|---|
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; | |
6bb40dd1 ID |
418 | struct ieee80211_bss_conf conf; |
419 | int delayed_flags; | |
420 | ||
421 | /* | |
422 | * Copy all data we need during this action under the protection | |
423 | * of a spinlock. Otherwise race conditions might occur which results | |
424 | * into an invalid configuration. | |
425 | */ | |
426 | spin_lock(&intf->lock); | |
427 | ||
428 | memcpy(&conf, &intf->conf, sizeof(conf)); | |
429 | delayed_flags = intf->delayed_flags; | |
430 | intf->delayed_flags = 0; | |
431 | ||
432 | spin_unlock(&intf->lock); | |
433 | ||
434 | if (delayed_flags & DELAYED_UPDATE_BEACON) { | |
e039fa4a JB |
435 | skb = ieee80211_beacon_get(rt2x00dev->hw, vif); |
436 | if (skb && | |
437 | rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb)) | |
6bb40dd1 | 438 | dev_kfree_skb(skb); |
6bb40dd1 ID |
439 | } |
440 | ||
72810379 ID |
441 | if (delayed_flags & DELAYED_CONFIG_ERP) |
442 | rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf); | |
a2e1d52a ID |
443 | |
444 | if (delayed_flags & DELAYED_LED_ASSOC) | |
445 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 446 | } |
5c58ee51 | 447 | |
6bb40dd1 ID |
448 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
449 | { | |
450 | struct rt2x00_dev *rt2x00dev = | |
451 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
452 | |
453 | /* | |
6bb40dd1 ID |
454 | * Iterate over each interface and perform the |
455 | * requested configurations. | |
471b3efd | 456 | */ |
6bb40dd1 ID |
457 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
458 | rt2x00lib_intf_scheduled_iter, | |
459 | rt2x00dev); | |
5c58ee51 ID |
460 | } |
461 | ||
95ea3627 ID |
462 | /* |
463 | * Interrupt context handlers. | |
464 | */ | |
6bb40dd1 ID |
465 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
466 | struct ieee80211_vif *vif) | |
95ea3627 | 467 | { |
6bb40dd1 | 468 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 469 | |
6bb40dd1 ID |
470 | if (vif->type != IEEE80211_IF_TYPE_AP && |
471 | vif->type != IEEE80211_IF_TYPE_IBSS) | |
95ea3627 ID |
472 | return; |
473 | ||
6bb40dd1 ID |
474 | spin_lock(&intf->lock); |
475 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
476 | spin_unlock(&intf->lock); | |
95ea3627 ID |
477 | } |
478 | ||
479 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
480 | { | |
481 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
482 | return; | |
483 | ||
633257d3 ID |
484 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
485 | rt2x00lib_beacondone_iter, | |
486 | rt2x00dev); | |
6bb40dd1 ID |
487 | |
488 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); | |
95ea3627 ID |
489 | } |
490 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
491 | ||
181d6902 ID |
492 | void rt2x00lib_txdone(struct queue_entry *entry, |
493 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 494 | { |
181d6902 | 495 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a JB |
496 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
497 | ||
498 | /* | |
499 | * Send frame to debugfs immediately, after this call is completed | |
500 | * we are going to overwrite the skb->cb array. | |
501 | */ | |
502 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
503 | |
504 | /* | |
505 | * Update TX statistics. | |
506 | */ | |
fb55f4d1 ID |
507 | rt2x00dev->link.qual.tx_success += |
508 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
509 | rt2x00dev->link.qual.tx_failed += | |
cb14cb79 | 510 | test_bit(TXDONE_FAILURE, &txdesc->flags); |
95ea3627 | 511 | |
181d6902 ID |
512 | /* |
513 | * Initialize TX status | |
514 | */ | |
e039fa4a JB |
515 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
516 | tx_info->status.ack_signal = 0; | |
517 | tx_info->status.excessive_retries = | |
fb55f4d1 | 518 | test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags); |
e039fa4a | 519 | tx_info->status.retry_count = txdesc->retry; |
181d6902 | 520 | |
e039fa4a | 521 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
fb55f4d1 | 522 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
e039fa4a | 523 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
fb55f4d1 | 524 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 525 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
526 | } |
527 | ||
e039fa4a | 528 | if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) { |
fb55f4d1 | 529 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 530 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 531 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 532 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
533 | } |
534 | ||
535 | /* | |
e039fa4a JB |
536 | * Only send the status report to mac80211 when TX status was |
537 | * requested by it. If this was a extra frame coming through | |
538 | * a mac80211 library call (RTS/CTS) then we should not send the | |
539 | * status report back. | |
95ea3627 | 540 | */ |
e039fa4a JB |
541 | if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) |
542 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
baf26a7e | 543 | else |
fb55f4d1 | 544 | dev_kfree_skb_irq(entry->skb); |
95ea3627 ID |
545 | entry->skb = NULL; |
546 | } | |
547 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
548 | ||
181d6902 ID |
549 | void rt2x00lib_rxdone(struct queue_entry *entry, |
550 | struct rxdone_entry_desc *rxdesc) | |
95ea3627 | 551 | { |
181d6902 | 552 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
95ea3627 | 553 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 554 | struct ieee80211_supported_band *sband; |
61af43c5 | 555 | struct ieee80211_hdr *hdr; |
70e2fed4 | 556 | const struct rt2x00_rate *rate; |
95ea3627 | 557 | unsigned int i; |
70e2fed4 | 558 | int idx = -1; |
61af43c5 | 559 | u16 fc; |
95ea3627 ID |
560 | |
561 | /* | |
562 | * Update RX statistics. | |
563 | */ | |
8318d78a JB |
564 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
565 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 566 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 567 | |
19d30e02 ID |
568 | if (((rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && |
569 | (rate->plcp == rxdesc->signal)) || | |
570 | (!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP) && | |
571 | (rate->bitrate == rxdesc->signal))) { | |
8318d78a | 572 | idx = i; |
95ea3627 ID |
573 | break; |
574 | } | |
575 | } | |
576 | ||
866a0503 ID |
577 | if (idx < 0) { |
578 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
579 | "signal=0x%.2x, plcp=%d.\n", rxdesc->signal, | |
580 | !!(rxdesc->dev_flags & RXDONE_SIGNAL_PLCP)); | |
581 | idx = 0; | |
582 | } | |
583 | ||
61af43c5 | 584 | /* |
7e56d38d | 585 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 586 | */ |
70e2fed4 | 587 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
7e56d38d | 588 | fc = le16_to_cpu(hdr->frame_control); |
19d30e02 | 589 | if (is_beacon(fc) && (rxdesc->dev_flags & RXDONE_MY_BSS)) |
181d6902 | 590 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi); |
61af43c5 | 591 | |
ebcf26da | 592 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 593 | |
8318d78a | 594 | rx_status->rate_idx = idx; |
566bfe5a | 595 | rx_status->qual = |
181d6902 | 596 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi); |
566bfe5a | 597 | rx_status->signal = rxdesc->rssi; |
181d6902 | 598 | rx_status->flag = rxdesc->flags; |
69f81a2c | 599 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
600 | |
601 | /* | |
181d6902 ID |
602 | * Send frame to mac80211 & debugfs. |
603 | * mac80211 will clean up the skb structure. | |
95ea3627 | 604 | */ |
5a6e5999 | 605 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 ID |
606 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
607 | entry->skb = NULL; | |
95ea3627 ID |
608 | } |
609 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
610 | ||
95ea3627 ID |
611 | /* |
612 | * Driver initialization handlers. | |
613 | */ | |
70e2fed4 ID |
614 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
615 | { | |
aa776721 | 616 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
70e2fed4 | 617 | .bitrate = 10, |
aa776721 | 618 | .ratemask = BIT(0), |
70e2fed4 ID |
619 | .plcp = 0x00, |
620 | }, | |
621 | { | |
aa776721 | 622 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 623 | .bitrate = 20, |
aa776721 | 624 | .ratemask = BIT(1), |
70e2fed4 ID |
625 | .plcp = 0x01, |
626 | }, | |
627 | { | |
aa776721 | 628 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 629 | .bitrate = 55, |
aa776721 | 630 | .ratemask = BIT(2), |
70e2fed4 ID |
631 | .plcp = 0x02, |
632 | }, | |
633 | { | |
aa776721 | 634 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 635 | .bitrate = 110, |
aa776721 | 636 | .ratemask = BIT(3), |
70e2fed4 ID |
637 | .plcp = 0x03, |
638 | }, | |
639 | { | |
aa776721 | 640 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 641 | .bitrate = 60, |
aa776721 | 642 | .ratemask = BIT(4), |
70e2fed4 ID |
643 | .plcp = 0x0b, |
644 | }, | |
645 | { | |
646 | .flags = DEV_RATE_OFDM, | |
647 | .bitrate = 90, | |
aa776721 | 648 | .ratemask = BIT(5), |
70e2fed4 ID |
649 | .plcp = 0x0f, |
650 | }, | |
651 | { | |
aa776721 | 652 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 653 | .bitrate = 120, |
aa776721 | 654 | .ratemask = BIT(6), |
70e2fed4 ID |
655 | .plcp = 0x0a, |
656 | }, | |
657 | { | |
658 | .flags = DEV_RATE_OFDM, | |
659 | .bitrate = 180, | |
aa776721 | 660 | .ratemask = BIT(7), |
70e2fed4 ID |
661 | .plcp = 0x0e, |
662 | }, | |
663 | { | |
aa776721 | 664 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 665 | .bitrate = 240, |
aa776721 | 666 | .ratemask = BIT(8), |
70e2fed4 ID |
667 | .plcp = 0x09, |
668 | }, | |
669 | { | |
670 | .flags = DEV_RATE_OFDM, | |
671 | .bitrate = 360, | |
aa776721 | 672 | .ratemask = BIT(9), |
70e2fed4 ID |
673 | .plcp = 0x0d, |
674 | }, | |
675 | { | |
676 | .flags = DEV_RATE_OFDM, | |
677 | .bitrate = 480, | |
aa776721 | 678 | .ratemask = BIT(10), |
70e2fed4 ID |
679 | .plcp = 0x08, |
680 | }, | |
681 | { | |
682 | .flags = DEV_RATE_OFDM, | |
683 | .bitrate = 540, | |
aa776721 | 684 | .ratemask = BIT(11), |
70e2fed4 ID |
685 | .plcp = 0x0c, |
686 | }, | |
687 | }; | |
688 | ||
95ea3627 ID |
689 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
690 | const int channel, const int tx_power, | |
691 | const int value) | |
692 | { | |
f2a3c7f5 | 693 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
694 | entry->hw_value = value; |
695 | entry->max_power = tx_power; | |
696 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
697 | } |
698 | ||
699 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 700 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 701 | { |
70e2fed4 ID |
702 | entry->flags = 0; |
703 | entry->bitrate = rate->bitrate; | |
704 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 705 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
706 | |
707 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
708 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
709 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
710 | } | |
95ea3627 ID |
711 | } |
712 | ||
713 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
714 | struct hw_mode_spec *spec) | |
715 | { | |
716 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
717 | struct ieee80211_channel *channels; |
718 | struct ieee80211_rate *rates; | |
31562e80 | 719 | unsigned int num_rates; |
95ea3627 ID |
720 | unsigned int i; |
721 | unsigned char tx_power; | |
722 | ||
31562e80 ID |
723 | num_rates = 0; |
724 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
725 | num_rates += 4; | |
726 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
727 | num_rates += 8; | |
95ea3627 ID |
728 | |
729 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
730 | if (!channels) | |
8318d78a | 731 | return -ENOMEM; |
95ea3627 | 732 | |
31562e80 | 733 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
734 | if (!rates) |
735 | goto exit_free_channels; | |
736 | ||
737 | /* | |
738 | * Initialize Rate list. | |
739 | */ | |
31562e80 | 740 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 741 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
742 | |
743 | /* | |
744 | * Initialize Channel list. | |
745 | */ | |
746 | for (i = 0; i < spec->num_channels; i++) { | |
31562e80 ID |
747 | if (spec->channels[i].channel <= 14) { |
748 | if (spec->tx_power_bg) | |
749 | tx_power = spec->tx_power_bg[i]; | |
750 | else | |
751 | tx_power = spec->tx_power_default; | |
752 | } else { | |
753 | if (spec->tx_power_a) | |
754 | tx_power = spec->tx_power_a[i]; | |
755 | else | |
756 | tx_power = spec->tx_power_default; | |
757 | } | |
95ea3627 ID |
758 | |
759 | rt2x00lib_channel(&channels[i], | |
760 | spec->channels[i].channel, tx_power, i); | |
761 | } | |
762 | ||
763 | /* | |
31562e80 | 764 | * Intitialize 802.11b, 802.11g |
95ea3627 | 765 | * Rates: CCK, OFDM. |
8318d78a | 766 | * Channels: 2.4 GHz |
95ea3627 | 767 | */ |
47ac2683 | 768 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
769 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
770 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
771 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
772 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
773 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
774 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
775 | } |
776 | ||
777 | /* | |
778 | * Intitialize 802.11a | |
779 | * Rates: OFDM. | |
780 | * Channels: OFDM, UNII, HiperLAN2. | |
781 | */ | |
47ac2683 | 782 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
783 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
784 | spec->num_channels - 14; | |
785 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
786 | num_rates - 4; | |
787 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
788 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
789 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
790 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
791 | } |
792 | ||
95ea3627 ID |
793 | return 0; |
794 | ||
8318d78a | 795 | exit_free_channels: |
95ea3627 | 796 | kfree(channels); |
95ea3627 ID |
797 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
798 | return -ENOMEM; | |
799 | } | |
800 | ||
801 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
802 | { | |
066cb637 | 803 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
804 | ieee80211_unregister_hw(rt2x00dev->hw); |
805 | ||
8318d78a JB |
806 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
807 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
808 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
809 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
810 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 ID |
811 | } |
812 | } | |
813 | ||
814 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
815 | { | |
816 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
817 | int status; | |
818 | ||
819 | /* | |
820 | * Initialize HW modes. | |
821 | */ | |
822 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
823 | if (status) | |
824 | return status; | |
825 | ||
61448f88 GW |
826 | /* |
827 | * Initialize HW fields. | |
828 | */ | |
829 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
830 | ||
95ea3627 ID |
831 | /* |
832 | * Register HW. | |
833 | */ | |
834 | status = ieee80211_register_hw(rt2x00dev->hw); | |
835 | if (status) { | |
836 | rt2x00lib_remove_hw(rt2x00dev); | |
837 | return status; | |
838 | } | |
839 | ||
066cb637 | 840 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
841 | |
842 | return 0; | |
843 | } | |
844 | ||
845 | /* | |
846 | * Initialization/uninitialization handlers. | |
847 | */ | |
e37ea213 | 848 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
849 | { |
850 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
851 | return; | |
852 | ||
853 | /* | |
1682fe6d | 854 | * Unregister extra components. |
95ea3627 ID |
855 | */ |
856 | rt2x00rfkill_unregister(rt2x00dev); | |
857 | ||
858 | /* | |
859 | * Allow the HW to uninitialize. | |
860 | */ | |
861 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
862 | ||
863 | /* | |
181d6902 | 864 | * Free allocated queue entries. |
95ea3627 | 865 | */ |
181d6902 | 866 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
867 | } |
868 | ||
e37ea213 | 869 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
870 | { |
871 | int status; | |
872 | ||
873 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
874 | return 0; | |
875 | ||
876 | /* | |
181d6902 | 877 | * Allocate all queue entries. |
95ea3627 | 878 | */ |
181d6902 ID |
879 | status = rt2x00queue_initialize(rt2x00dev); |
880 | if (status) | |
95ea3627 | 881 | return status; |
95ea3627 ID |
882 | |
883 | /* | |
884 | * Initialize the device. | |
885 | */ | |
886 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
887 | if (status) { |
888 | rt2x00queue_uninitialize(rt2x00dev); | |
889 | return status; | |
890 | } | |
95ea3627 ID |
891 | |
892 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); | |
893 | ||
894 | /* | |
1682fe6d | 895 | * Register the extra components. |
95ea3627 | 896 | */ |
1682fe6d | 897 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
898 | |
899 | return 0; | |
95ea3627 ID |
900 | } |
901 | ||
e37ea213 ID |
902 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
903 | { | |
904 | int retval; | |
905 | ||
906 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
907 | return 0; | |
908 | ||
909 | /* | |
910 | * If this is the first interface which is added, | |
911 | * we should load the firmware now. | |
912 | */ | |
9404ef34 ID |
913 | retval = rt2x00lib_load_firmware(rt2x00dev); |
914 | if (retval) | |
915 | return retval; | |
e37ea213 ID |
916 | |
917 | /* | |
918 | * Initialize the device. | |
919 | */ | |
920 | retval = rt2x00lib_initialize(rt2x00dev); | |
921 | if (retval) | |
922 | return retval; | |
923 | ||
924 | /* | |
925 | * Enable radio. | |
926 | */ | |
927 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
928 | if (retval) { | |
929 | rt2x00lib_uninitialize(rt2x00dev); | |
930 | return retval; | |
931 | } | |
932 | ||
6bb40dd1 ID |
933 | rt2x00dev->intf_ap_count = 0; |
934 | rt2x00dev->intf_sta_count = 0; | |
935 | rt2x00dev->intf_associated = 0; | |
936 | ||
e37ea213 ID |
937 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
943 | { | |
944 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
945 | return; | |
946 | ||
947 | /* | |
948 | * Perhaps we can add something smarter here, | |
949 | * but for now just disabling the radio should do. | |
950 | */ | |
951 | rt2x00lib_disable_radio(rt2x00dev); | |
952 | ||
6bb40dd1 ID |
953 | rt2x00dev->intf_ap_count = 0; |
954 | rt2x00dev->intf_sta_count = 0; | |
955 | rt2x00dev->intf_associated = 0; | |
956 | ||
e37ea213 ID |
957 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
958 | } | |
959 | ||
95ea3627 ID |
960 | /* |
961 | * driver allocation handlers. | |
962 | */ | |
95ea3627 ID |
963 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
964 | { | |
965 | int retval = -ENOMEM; | |
966 | ||
6bb40dd1 ID |
967 | /* |
968 | * Make room for rt2x00_intf inside the per-interface | |
969 | * structure ieee80211_vif. | |
970 | */ | |
971 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
972 | ||
95ea3627 ID |
973 | /* |
974 | * Let the driver probe the device to detect the capabilities. | |
975 | */ | |
976 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
977 | if (retval) { | |
978 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
979 | goto exit; | |
980 | } | |
981 | ||
982 | /* | |
983 | * Initialize configuration work. | |
984 | */ | |
6bb40dd1 | 985 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 986 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
987 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
988 | ||
95ea3627 | 989 | /* |
181d6902 | 990 | * Allocate queue array. |
95ea3627 | 991 | */ |
181d6902 | 992 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
993 | if (retval) |
994 | goto exit; | |
995 | ||
996 | /* | |
997 | * Initialize ieee80211 structure. | |
998 | */ | |
999 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1000 | if (retval) { | |
1001 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1002 | goto exit; | |
1003 | } | |
1004 | ||
a9450b70 | 1005 | /* |
1682fe6d | 1006 | * Register extra components. |
a9450b70 ID |
1007 | */ |
1008 | rt2x00leds_register(rt2x00dev); | |
1682fe6d | 1009 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
1010 | rt2x00debug_register(rt2x00dev); |
1011 | ||
066cb637 ID |
1012 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1013 | ||
95ea3627 ID |
1014 | return 0; |
1015 | ||
1016 | exit: | |
1017 | rt2x00lib_remove_dev(rt2x00dev); | |
1018 | ||
1019 | return retval; | |
1020 | } | |
1021 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1022 | ||
1023 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1024 | { | |
066cb637 ID |
1025 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1026 | ||
95ea3627 ID |
1027 | /* |
1028 | * Disable radio. | |
1029 | */ | |
1030 | rt2x00lib_disable_radio(rt2x00dev); | |
1031 | ||
1032 | /* | |
1033 | * Uninitialize device. | |
1034 | */ | |
1035 | rt2x00lib_uninitialize(rt2x00dev); | |
1036 | ||
1037 | /* | |
1682fe6d | 1038 | * Free extra components |
95ea3627 ID |
1039 | */ |
1040 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 1041 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
1042 | rt2x00leds_unregister(rt2x00dev); |
1043 | ||
95ea3627 ID |
1044 | /* |
1045 | * Free ieee80211_hw memory. | |
1046 | */ | |
1047 | rt2x00lib_remove_hw(rt2x00dev); | |
1048 | ||
1049 | /* | |
1050 | * Free firmware image. | |
1051 | */ | |
1052 | rt2x00lib_free_firmware(rt2x00dev); | |
1053 | ||
1054 | /* | |
181d6902 | 1055 | * Free queue structures. |
95ea3627 | 1056 | */ |
181d6902 | 1057 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1058 | } |
1059 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1060 | ||
1061 | /* | |
1062 | * Device state handlers | |
1063 | */ | |
1064 | #ifdef CONFIG_PM | |
1065 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1066 | { | |
1067 | int retval; | |
1068 | ||
1069 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1070 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1071 | ||
1072 | /* | |
1073 | * Only continue if mac80211 has open interfaces. | |
1074 | */ | |
1075 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1076 | goto exit; | |
6d7f9877 | 1077 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
95ea3627 ID |
1078 | |
1079 | /* | |
1682fe6d | 1080 | * Disable radio. |
95ea3627 | 1081 | */ |
e37ea213 | 1082 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1083 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1084 | |
1085 | /* | |
1086 | * Suspend/disable extra components. | |
1087 | */ | |
a9450b70 | 1088 | rt2x00leds_suspend(rt2x00dev); |
1682fe6d | 1089 | rt2x00rfkill_suspend(rt2x00dev); |
95ea3627 ID |
1090 | rt2x00debug_deregister(rt2x00dev); |
1091 | ||
066cb637 | 1092 | exit: |
95ea3627 | 1093 | /* |
9896322a ID |
1094 | * Set device mode to sleep for power management, |
1095 | * on some hardware this call seems to consistently fail. | |
1096 | * From the specifications it is hard to tell why it fails, | |
1097 | * and if this is a "bad thing". | |
1098 | * Overall it is safe to just ignore the failure and | |
1099 | * continue suspending. The only downside is that the | |
1100 | * device will not be in optimal power save mode, but with | |
1101 | * the radio and the other components already disabled the | |
1102 | * device is as good as disabled. | |
95ea3627 ID |
1103 | */ |
1104 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1105 | if (retval) | |
9896322a ID |
1106 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1107 | "continue suspending.\n"); | |
95ea3627 ID |
1108 | |
1109 | return 0; | |
1110 | } | |
1111 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1112 | ||
6bb40dd1 ID |
1113 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1114 | struct ieee80211_vif *vif) | |
1115 | { | |
1116 | struct rt2x00_dev *rt2x00dev = data; | |
1117 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1118 | ||
1119 | spin_lock(&intf->lock); | |
1120 | ||
1121 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1122 | vif->type, intf->mac, intf->bssid); | |
1123 | ||
1124 | ||
1125 | /* | |
1126 | * Master or Ad-hoc mode require a new beacon update. | |
1127 | */ | |
1128 | if (vif->type == IEEE80211_IF_TYPE_AP || | |
1129 | vif->type == IEEE80211_IF_TYPE_IBSS) | |
1130 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
1131 | ||
1132 | spin_unlock(&intf->lock); | |
1133 | } | |
1134 | ||
95ea3627 ID |
1135 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1136 | { | |
95ea3627 ID |
1137 | int retval; |
1138 | ||
1139 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1140 | |
1141 | /* | |
1682fe6d | 1142 | * Restore/enable extra components. |
95ea3627 ID |
1143 | */ |
1144 | rt2x00debug_register(rt2x00dev); | |
1682fe6d | 1145 | rt2x00rfkill_resume(rt2x00dev); |
a9450b70 | 1146 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1147 | |
066cb637 | 1148 | /* |
6d7f9877 | 1149 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1150 | */ |
6d7f9877 | 1151 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1152 | return 0; |
1153 | ||
95ea3627 ID |
1154 | /* |
1155 | * Reinitialize device and all active interfaces. | |
1156 | */ | |
e37ea213 | 1157 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1158 | if (retval) |
1159 | goto exit; | |
1160 | ||
1161 | /* | |
1162 | * Reconfigure device. | |
1163 | */ | |
066cb637 ID |
1164 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
1165 | if (!rt2x00dev->hw->conf.radio_enabled) | |
1166 | rt2x00lib_disable_radio(rt2x00dev); | |
95ea3627 | 1167 | |
6bb40dd1 ID |
1168 | /* |
1169 | * Iterator over each active interface to | |
1170 | * reconfigure the hardware. | |
1171 | */ | |
1172 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1173 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1174 | |
e37ea213 ID |
1175 | /* |
1176 | * We are ready again to receive requests from mac80211. | |
1177 | */ | |
1178 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); | |
1179 | ||
066cb637 ID |
1180 | /* |
1181 | * It is possible that during that mac80211 has attempted | |
1182 | * to send frames while we were suspending or resuming. | |
1183 | * In that case we have disabled the TX queue and should | |
1184 | * now enable it again | |
1185 | */ | |
36d6825b | 1186 | ieee80211_wake_queues(rt2x00dev->hw); |
066cb637 | 1187 | |
95ea3627 | 1188 | /* |
6bb40dd1 ID |
1189 | * During interface iteration we might have changed the |
1190 | * delayed_flags, time to handles the event by calling | |
1191 | * the work handler directly. | |
95ea3627 | 1192 | */ |
6bb40dd1 | 1193 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1194 | |
95ea3627 ID |
1195 | return 0; |
1196 | ||
1197 | exit: | |
1198 | rt2x00lib_disable_radio(rt2x00dev); | |
1199 | rt2x00lib_uninitialize(rt2x00dev); | |
1200 | rt2x00debug_deregister(rt2x00dev); | |
1201 | ||
95ea3627 ID |
1202 | return retval; |
1203 | } | |
1204 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1205 | #endif /* CONFIG_PM */ | |
1206 | ||
1207 | /* | |
1208 | * rt2x00lib module information. | |
1209 | */ | |
1210 | MODULE_AUTHOR(DRV_PROJECT); | |
1211 | MODULE_VERSION(DRV_VERSION); | |
1212 | MODULE_DESCRIPTION("rt2x00 library"); | |
1213 | MODULE_LICENSE("GPL"); |