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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00lib | |
23 | Abstract: rt2x00 generic device routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
95ea3627 ID |
32 | /* |
33 | * Link tuning handlers | |
34 | */ | |
53b3f8e4 | 35 | void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 36 | { |
0262ab0d | 37 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
53b3f8e4 ID |
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 | 76 | |
8e260c22 | 77 | queue_delayed_work(rt2x00dev->hw->workqueue, |
95ea3627 ID |
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 | */ | |
0262ab0d ID |
97 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) || |
98 | test_bit(DEVICE_STATE_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 | ||
2b08da3f ID |
115 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
116 | ||
a2e1d52a | 117 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 118 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 119 | |
0262ab0d | 120 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
121 | |
122 | /* | |
123 | * Enable RX. | |
124 | */ | |
5cbf830e | 125 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
126 | |
127 | /* | |
128 | * Start the TX queues. | |
129 | */ | |
36d6825b | 130 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
131 | |
132 | return 0; | |
133 | } | |
134 | ||
135 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
136 | { | |
0262ab0d | 137 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
138 | return; |
139 | ||
95ea3627 ID |
140 | /* |
141 | * Stop the TX queues. | |
142 | */ | |
143 | ieee80211_stop_queues(rt2x00dev->hw); | |
144 | ||
145 | /* | |
146 | * Disable RX. | |
147 | */ | |
5cbf830e | 148 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
149 | |
150 | /* | |
151 | * Disable radio. | |
152 | */ | |
153 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 154 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 155 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 156 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
157 | } |
158 | ||
5cbf830e | 159 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 160 | { |
95ea3627 ID |
161 | /* |
162 | * When we are disabling the RX, we should also stop the link tuner. | |
163 | */ | |
5cbf830e | 164 | if (state == STATE_RADIO_RX_OFF) |
95ea3627 ID |
165 | rt2x00lib_stop_link_tuner(rt2x00dev); |
166 | ||
167 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
168 | ||
169 | /* | |
170 | * When we are enabling the RX, we should also start the link tuner. | |
171 | */ | |
5cbf830e | 172 | if (state == STATE_RADIO_RX_ON && |
6bb40dd1 | 173 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
95ea3627 ID |
174 | rt2x00lib_start_link_tuner(rt2x00dev); |
175 | } | |
176 | ||
69f81a2c ID |
177 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
178 | { | |
179 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
180 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
181 | int sample_a = | |
182 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); | |
183 | int sample_b = | |
184 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); | |
185 | ||
186 | /* | |
187 | * We are done sampling. Now we should evaluate the results. | |
188 | */ | |
189 | rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE; | |
190 | ||
191 | /* | |
192 | * During the last period we have sampled the RSSI | |
193 | * from both antenna's. It now is time to determine | |
194 | * which antenna demonstrated the best performance. | |
195 | * When we are already on the antenna with the best | |
196 | * performance, then there really is nothing for us | |
197 | * left to do. | |
198 | */ | |
199 | if (sample_a == sample_b) | |
200 | return; | |
201 | ||
05253c93 ID |
202 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
203 | rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c | 204 | |
05253c93 ID |
205 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
206 | tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; | |
69f81a2c ID |
207 | |
208 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
209 | } | |
210 | ||
211 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) | |
212 | { | |
213 | enum antenna rx = rt2x00dev->link.ant.active.rx; | |
214 | enum antenna tx = rt2x00dev->link.ant.active.tx; | |
215 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); | |
216 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); | |
217 | ||
218 | /* | |
219 | * Legacy driver indicates that we should swap antenna's | |
220 | * when the difference in RSSI is greater that 5. This | |
221 | * also should be done when the RSSI was actually better | |
222 | * then the previous sample. | |
223 | * When the difference exceeds the threshold we should | |
224 | * sample the rssi from the other antenna to make a valid | |
225 | * comparison between the 2 antennas. | |
226 | */ | |
b290d433 | 227 | if (abs(rssi_curr - rssi_old) < 5) |
69f81a2c ID |
228 | return; |
229 | ||
230 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; | |
231 | ||
232 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) | |
233 | rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
234 | ||
235 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) | |
236 | tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; | |
237 | ||
238 | rt2x00lib_config_antenna(rt2x00dev, rx, tx); | |
239 | } | |
240 | ||
241 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) | |
242 | { | |
243 | /* | |
244 | * Determine if software diversity is enabled for | |
245 | * either the TX or RX antenna (or both). | |
246 | * Always perform this check since within the link | |
247 | * tuner interval the configuration might have changed. | |
248 | */ | |
249 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; | |
250 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; | |
251 | ||
0f4ac38b | 252 | if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
69f81a2c | 253 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
0f4ac38b | 254 | if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
255 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
256 | ||
257 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && | |
258 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { | |
05253c93 | 259 | rt2x00dev->link.ant.flags = 0; |
69f81a2c ID |
260 | return; |
261 | } | |
262 | ||
263 | /* | |
264 | * If we have only sampled the data over the last period | |
265 | * we should now harvest the data. Otherwise just evaluate | |
266 | * the data. The latter should only be performed once | |
267 | * every 2 seconds. | |
268 | */ | |
269 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) | |
270 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); | |
271 | else if (rt2x00dev->link.count & 1) | |
272 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); | |
273 | } | |
274 | ||
275 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) | |
276 | { | |
277 | int avg_rssi = rssi; | |
278 | ||
279 | /* | |
280 | * Update global RSSI | |
281 | */ | |
282 | if (link->qual.avg_rssi) | |
283 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); | |
284 | link->qual.avg_rssi = avg_rssi; | |
285 | ||
286 | /* | |
287 | * Update antenna RSSI | |
288 | */ | |
289 | if (link->ant.rssi_ant) | |
290 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); | |
291 | link->ant.rssi_ant = rssi; | |
292 | } | |
293 | ||
ebcf26da | 294 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
95ea3627 | 295 | { |
ebcf26da ID |
296 | if (qual->rx_failed || qual->rx_success) |
297 | qual->rx_percentage = | |
298 | (qual->rx_success * 100) / | |
299 | (qual->rx_failed + qual->rx_success); | |
95ea3627 | 300 | else |
ebcf26da | 301 | qual->rx_percentage = 50; |
95ea3627 | 302 | |
ebcf26da ID |
303 | if (qual->tx_failed || qual->tx_success) |
304 | qual->tx_percentage = | |
305 | (qual->tx_success * 100) / | |
306 | (qual->tx_failed + qual->tx_success); | |
95ea3627 | 307 | else |
ebcf26da | 308 | qual->tx_percentage = 50; |
95ea3627 | 309 | |
ebcf26da ID |
310 | qual->rx_success = 0; |
311 | qual->rx_failed = 0; | |
312 | qual->tx_success = 0; | |
313 | qual->tx_failed = 0; | |
95ea3627 ID |
314 | } |
315 | ||
316 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, | |
317 | int rssi) | |
318 | { | |
319 | int rssi_percentage = 0; | |
320 | int signal; | |
321 | ||
322 | /* | |
323 | * We need a positive value for the RSSI. | |
324 | */ | |
325 | if (rssi < 0) | |
326 | rssi += rt2x00dev->rssi_offset; | |
327 | ||
328 | /* | |
329 | * Calculate the different percentages, | |
330 | * which will be used for the signal. | |
331 | */ | |
332 | if (rt2x00dev->rssi_offset) | |
333 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; | |
334 | ||
335 | /* | |
336 | * Add the individual percentages and use the WEIGHT | |
337 | * defines to calculate the current link signal. | |
338 | */ | |
339 | signal = ((WEIGHT_RSSI * rssi_percentage) + | |
ebcf26da ID |
340 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
341 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; | |
95ea3627 ID |
342 | |
343 | return (signal > 100) ? 100 : signal; | |
344 | } | |
345 | ||
346 | static void rt2x00lib_link_tuner(struct work_struct *work) | |
347 | { | |
348 | struct rt2x00_dev *rt2x00dev = | |
349 | container_of(work, struct rt2x00_dev, link.work.work); | |
350 | ||
25ab002f ID |
351 | /* |
352 | * When the radio is shutting down we should | |
353 | * immediately cease all link tuning. | |
354 | */ | |
0262ab0d | 355 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
25ab002f ID |
356 | return; |
357 | ||
95ea3627 ID |
358 | /* |
359 | * Update statistics. | |
360 | */ | |
ebcf26da | 361 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
95ea3627 | 362 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
ebcf26da | 363 | rt2x00dev->link.qual.rx_failed; |
95ea3627 | 364 | |
95ea3627 ID |
365 | /* |
366 | * Only perform the link tuning when Link tuning | |
367 | * has been enabled (This could have been disabled from the EEPROM). | |
368 | */ | |
369 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) | |
370 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); | |
371 | ||
725d99d4 ID |
372 | /* |
373 | * Precalculate a portion of the link signal which is | |
374 | * in based on the tx/rx success/failure counters. | |
375 | */ | |
ebcf26da | 376 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
725d99d4 | 377 | |
a9450b70 ID |
378 | /* |
379 | * Send a signal to the led to update the led signal strength. | |
380 | */ | |
381 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); | |
382 | ||
53b3f8e4 ID |
383 | /* |
384 | * Evaluate antenna setup, make this the last step since this could | |
385 | * possibly reset some statistics. | |
386 | */ | |
387 | rt2x00lib_evaluate_antenna(rt2x00dev); | |
388 | ||
95ea3627 ID |
389 | /* |
390 | * Increase tuner counter, and reschedule the next link tuner run. | |
391 | */ | |
392 | rt2x00dev->link.count++; | |
8e260c22 | 393 | queue_delayed_work(rt2x00dev->hw->workqueue, |
980dfcb9 | 394 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); |
95ea3627 ID |
395 | } |
396 | ||
4150c572 JB |
397 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
398 | { | |
399 | struct rt2x00_dev *rt2x00dev = | |
400 | container_of(work, struct rt2x00_dev, filter_work); | |
5886d0db | 401 | |
133adf08 | 402 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
4150c572 JB |
403 | } |
404 | ||
6bb40dd1 ID |
405 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
406 | struct ieee80211_vif *vif) | |
5c58ee51 | 407 | { |
6bb40dd1 ID |
408 | struct rt2x00_dev *rt2x00dev = data; |
409 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
410 | struct ieee80211_bss_conf conf; |
411 | int delayed_flags; | |
412 | ||
413 | /* | |
414 | * Copy all data we need during this action under the protection | |
415 | * of a spinlock. Otherwise race conditions might occur which results | |
416 | * into an invalid configuration. | |
417 | */ | |
418 | spin_lock(&intf->lock); | |
419 | ||
420 | memcpy(&conf, &intf->conf, sizeof(conf)); | |
421 | delayed_flags = intf->delayed_flags; | |
422 | intf->delayed_flags = 0; | |
423 | ||
424 | spin_unlock(&intf->lock); | |
425 | ||
980dfcb9 ID |
426 | /* |
427 | * It is possible the radio was disabled while the work had been | |
428 | * scheduled. If that happens we should return here immediately, | |
429 | * note that in the spinlock protected area above the delayed_flags | |
430 | * have been cleared correctly. | |
431 | */ | |
0262ab0d | 432 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
433 | return; |
434 | ||
bd88a781 ID |
435 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
436 | rt2x00queue_update_beacon(rt2x00dev, vif); | |
6bb40dd1 | 437 | |
72810379 | 438 | if (delayed_flags & DELAYED_CONFIG_ERP) |
980dfcb9 | 439 | rt2x00lib_config_erp(rt2x00dev, intf, &conf); |
a2e1d52a ID |
440 | |
441 | if (delayed_flags & DELAYED_LED_ASSOC) | |
442 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 443 | } |
5c58ee51 | 444 | |
6bb40dd1 ID |
445 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
446 | { | |
447 | struct rt2x00_dev *rt2x00dev = | |
448 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
449 | |
450 | /* | |
6bb40dd1 ID |
451 | * Iterate over each interface and perform the |
452 | * requested configurations. | |
471b3efd | 453 | */ |
6bb40dd1 ID |
454 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
455 | rt2x00lib_intf_scheduled_iter, | |
456 | rt2x00dev); | |
5c58ee51 ID |
457 | } |
458 | ||
95ea3627 ID |
459 | /* |
460 | * Interrupt context handlers. | |
461 | */ | |
6bb40dd1 ID |
462 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
463 | struct ieee80211_vif *vif) | |
95ea3627 | 464 | { |
c4da0048 | 465 | struct rt2x00_dev *rt2x00dev = data; |
6bb40dd1 | 466 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 467 | |
05c914fe JB |
468 | if (vif->type != NL80211_IFTYPE_AP && |
469 | vif->type != NL80211_IFTYPE_ADHOC) | |
95ea3627 ID |
470 | return; |
471 | ||
c95edf54 GW |
472 | /* |
473 | * Clean up the beacon skb. | |
474 | */ | |
c4da0048 | 475 | rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb); |
c95edf54 GW |
476 | intf->beacon->skb = NULL; |
477 | ||
6bb40dd1 ID |
478 | spin_lock(&intf->lock); |
479 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
480 | spin_unlock(&intf->lock); | |
95ea3627 ID |
481 | } |
482 | ||
483 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
484 | { | |
0262ab0d | 485 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
486 | return; |
487 | ||
633257d3 ID |
488 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
489 | rt2x00lib_beacondone_iter, | |
490 | rt2x00dev); | |
6bb40dd1 | 491 | |
8e260c22 | 492 | schedule_work(&rt2x00dev->intf_work); |
95ea3627 ID |
493 | } |
494 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
495 | ||
181d6902 ID |
496 | void rt2x00lib_txdone(struct queue_entry *entry, |
497 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 498 | { |
181d6902 | 499 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 500 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 501 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 502 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
e6a9854b | 503 | u8 rate_idx, rate_flags; |
d74f5ba4 ID |
504 | |
505 | /* | |
506 | * Unmap the skb. | |
507 | */ | |
508 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a | 509 | |
2bb057d0 ID |
510 | /* |
511 | * If the IV/EIV data was stripped from the frame before it was | |
512 | * passed to the hardware, we should now reinsert it again because | |
513 | * mac80211 will expect the the same data to be present it the | |
514 | * frame as it was passed to us. | |
515 | */ | |
516 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
517 | rt2x00crypto_tx_insert_iv(entry->skb); | |
518 | ||
e039fa4a JB |
519 | /* |
520 | * Send frame to debugfs immediately, after this call is completed | |
521 | * we are going to overwrite the skb->cb array. | |
522 | */ | |
523 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
524 | |
525 | /* | |
526 | * Update TX statistics. | |
527 | */ | |
fb55f4d1 ID |
528 | rt2x00dev->link.qual.tx_success += |
529 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
530 | rt2x00dev->link.qual.tx_failed += | |
cb14cb79 | 531 | test_bit(TXDONE_FAILURE, &txdesc->flags); |
95ea3627 | 532 | |
e6a9854b JB |
533 | rate_idx = skbdesc->tx_rate_idx; |
534 | rate_flags = skbdesc->tx_rate_flags; | |
535 | ||
181d6902 ID |
536 | /* |
537 | * Initialize TX status | |
538 | */ | |
e039fa4a JB |
539 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
540 | tx_info->status.ack_signal = 0; | |
e6a9854b JB |
541 | tx_info->status.rates[0].idx = rate_idx; |
542 | tx_info->status.rates[0].flags = rate_flags; | |
543 | tx_info->status.rates[0].count = txdesc->retry + 1; | |
544 | tx_info->status.rates[1].idx = -1; /* terminate */ | |
181d6902 | 545 | |
e039fa4a | 546 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
fb55f4d1 | 547 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
e039fa4a | 548 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
fb55f4d1 | 549 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 550 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
551 | } |
552 | ||
e6a9854b | 553 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
fb55f4d1 | 554 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 555 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 556 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 557 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
558 | } |
559 | ||
560 | /* | |
e039fa4a JB |
561 | * Only send the status report to mac80211 when TX status was |
562 | * requested by it. If this was a extra frame coming through | |
563 | * a mac80211 library call (RTS/CTS) then we should not send the | |
564 | * status report back. | |
95ea3627 | 565 | */ |
e039fa4a JB |
566 | if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) |
567 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
baf26a7e | 568 | else |
fb55f4d1 | 569 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
570 | |
571 | /* | |
572 | * Make this entry available for reuse. | |
573 | */ | |
95ea3627 | 574 | entry->skb = NULL; |
d74f5ba4 ID |
575 | entry->flags = 0; |
576 | ||
577 | rt2x00dev->ops->lib->init_txentry(rt2x00dev, entry); | |
578 | ||
0262ab0d | 579 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
580 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
581 | ||
582 | /* | |
583 | * If the data queue was below the threshold before the txdone | |
584 | * handler we must make sure the packet queue in the mac80211 stack | |
585 | * is reenabled when the txdone handler has finished. | |
586 | */ | |
587 | if (!rt2x00queue_threshold(entry->queue)) | |
588 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
589 | } |
590 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
591 | ||
c4da0048 GW |
592 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
593 | struct queue_entry *entry) | |
95ea3627 | 594 | { |
c4da0048 GW |
595 | struct rxdone_entry_desc rxdesc; |
596 | struct sk_buff *skb; | |
95ea3627 | 597 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 598 | struct ieee80211_supported_band *sband; |
61af43c5 | 599 | struct ieee80211_hdr *hdr; |
70e2fed4 | 600 | const struct rt2x00_rate *rate; |
2bb057d0 | 601 | unsigned int header_length; |
239c249d | 602 | unsigned int align; |
95ea3627 | 603 | unsigned int i; |
70e2fed4 | 604 | int idx = -1; |
95ea3627 | 605 | |
c4da0048 GW |
606 | /* |
607 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
608 | * received frame and reuse the existing buffer. | |
609 | */ | |
610 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
611 | if (!skb) | |
612 | return; | |
613 | ||
614 | /* | |
615 | * Unmap the skb. | |
616 | */ | |
617 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
618 | ||
619 | /* | |
620 | * Extract the RXD details. | |
621 | */ | |
622 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
623 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 624 | |
239c249d GW |
625 | /* |
626 | * The data behind the ieee80211 header must be | |
a9f853dd | 627 | * aligned on a 4 byte boundary. |
239c249d | 628 | */ |
2bb057d0 ID |
629 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
630 | align = ((unsigned long)(entry->skb->data + header_length)) & 3; | |
239c249d | 631 | |
2bb057d0 ID |
632 | /* |
633 | * Hardware might have stripped the IV/EIV/ICV data, | |
634 | * in that case it is possible that the data was | |
635 | * provided seperately (through hardware descriptor) | |
636 | * in which case we should reinsert the data into the frame. | |
637 | */ | |
638 | if ((rxdesc.flags & RX_FLAG_IV_STRIPPED)) { | |
639 | rt2x00crypto_rx_insert_iv(entry->skb, align, | |
640 | header_length, &rxdesc); | |
641 | } else if (align) { | |
239c249d GW |
642 | skb_push(entry->skb, align); |
643 | /* Move entire frame in 1 command */ | |
644 | memmove(entry->skb->data, entry->skb->data + align, | |
c4da0048 | 645 | rxdesc.size); |
239c249d GW |
646 | } |
647 | ||
648 | /* Update data pointers, trim buffer to correct size */ | |
c4da0048 | 649 | skb_trim(entry->skb, rxdesc.size); |
239c249d | 650 | |
95ea3627 ID |
651 | /* |
652 | * Update RX statistics. | |
653 | */ | |
8318d78a JB |
654 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
655 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 656 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 657 | |
c4da0048 GW |
658 | if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && |
659 | (rate->plcp == rxdesc.signal)) || | |
6c6aa3c0 | 660 | ((rxdesc.dev_flags & RXDONE_SIGNAL_BITRATE) && |
c4da0048 | 661 | (rate->bitrate == rxdesc.signal))) { |
8318d78a | 662 | idx = i; |
95ea3627 ID |
663 | break; |
664 | } | |
665 | } | |
666 | ||
866a0503 ID |
667 | if (idx < 0) { |
668 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
c4da0048 GW |
669 | "signal=0x%.2x, plcp=%d.\n", rxdesc.signal, |
670 | !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP)); | |
866a0503 ID |
671 | idx = 0; |
672 | } | |
673 | ||
61af43c5 | 674 | /* |
7e56d38d | 675 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 676 | */ |
70e2fed4 | 677 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
ac104462 | 678 | if (ieee80211_is_beacon(hdr->frame_control) && |
c4da0048 GW |
679 | (rxdesc.dev_flags & RXDONE_MY_BSS)) |
680 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc.rssi); | |
61af43c5 | 681 | |
2bb057d0 ID |
682 | rt2x00debug_update_crypto(rt2x00dev, |
683 | rxdesc.cipher, | |
684 | rxdesc.cipher_status); | |
685 | ||
ebcf26da | 686 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 687 | |
ae73e58e | 688 | rx_status->mactime = rxdesc.timestamp; |
8318d78a | 689 | rx_status->rate_idx = idx; |
566bfe5a | 690 | rx_status->qual = |
c4da0048 GW |
691 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc.rssi); |
692 | rx_status->signal = rxdesc.rssi; | |
693 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 694 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
695 | |
696 | /* | |
181d6902 ID |
697 | * Send frame to mac80211 & debugfs. |
698 | * mac80211 will clean up the skb structure. | |
95ea3627 | 699 | */ |
5a6e5999 | 700 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 | 701 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
c4da0048 GW |
702 | |
703 | /* | |
704 | * Replace the skb with the freshly allocated one. | |
705 | */ | |
706 | entry->skb = skb; | |
d74f5ba4 ID |
707 | entry->flags = 0; |
708 | ||
709 | rt2x00dev->ops->lib->init_rxentry(rt2x00dev, entry); | |
710 | ||
711 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
712 | } |
713 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
714 | ||
95ea3627 ID |
715 | /* |
716 | * Driver initialization handlers. | |
717 | */ | |
70e2fed4 ID |
718 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
719 | { | |
aa776721 | 720 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
70e2fed4 | 721 | .bitrate = 10, |
aa776721 | 722 | .ratemask = BIT(0), |
70e2fed4 ID |
723 | .plcp = 0x00, |
724 | }, | |
725 | { | |
aa776721 | 726 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 727 | .bitrate = 20, |
aa776721 | 728 | .ratemask = BIT(1), |
70e2fed4 ID |
729 | .plcp = 0x01, |
730 | }, | |
731 | { | |
aa776721 | 732 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 733 | .bitrate = 55, |
aa776721 | 734 | .ratemask = BIT(2), |
70e2fed4 ID |
735 | .plcp = 0x02, |
736 | }, | |
737 | { | |
aa776721 | 738 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 739 | .bitrate = 110, |
aa776721 | 740 | .ratemask = BIT(3), |
70e2fed4 ID |
741 | .plcp = 0x03, |
742 | }, | |
743 | { | |
aa776721 | 744 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 745 | .bitrate = 60, |
aa776721 | 746 | .ratemask = BIT(4), |
70e2fed4 ID |
747 | .plcp = 0x0b, |
748 | }, | |
749 | { | |
750 | .flags = DEV_RATE_OFDM, | |
751 | .bitrate = 90, | |
aa776721 | 752 | .ratemask = BIT(5), |
70e2fed4 ID |
753 | .plcp = 0x0f, |
754 | }, | |
755 | { | |
aa776721 | 756 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 757 | .bitrate = 120, |
aa776721 | 758 | .ratemask = BIT(6), |
70e2fed4 ID |
759 | .plcp = 0x0a, |
760 | }, | |
761 | { | |
762 | .flags = DEV_RATE_OFDM, | |
763 | .bitrate = 180, | |
aa776721 | 764 | .ratemask = BIT(7), |
70e2fed4 ID |
765 | .plcp = 0x0e, |
766 | }, | |
767 | { | |
aa776721 | 768 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 769 | .bitrate = 240, |
aa776721 | 770 | .ratemask = BIT(8), |
70e2fed4 ID |
771 | .plcp = 0x09, |
772 | }, | |
773 | { | |
774 | .flags = DEV_RATE_OFDM, | |
775 | .bitrate = 360, | |
aa776721 | 776 | .ratemask = BIT(9), |
70e2fed4 ID |
777 | .plcp = 0x0d, |
778 | }, | |
779 | { | |
780 | .flags = DEV_RATE_OFDM, | |
781 | .bitrate = 480, | |
aa776721 | 782 | .ratemask = BIT(10), |
70e2fed4 ID |
783 | .plcp = 0x08, |
784 | }, | |
785 | { | |
786 | .flags = DEV_RATE_OFDM, | |
787 | .bitrate = 540, | |
aa776721 | 788 | .ratemask = BIT(11), |
70e2fed4 ID |
789 | .plcp = 0x0c, |
790 | }, | |
791 | }; | |
792 | ||
95ea3627 ID |
793 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
794 | const int channel, const int tx_power, | |
795 | const int value) | |
796 | { | |
f2a3c7f5 | 797 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
798 | entry->hw_value = value; |
799 | entry->max_power = tx_power; | |
800 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
801 | } |
802 | ||
803 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 804 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 805 | { |
70e2fed4 ID |
806 | entry->flags = 0; |
807 | entry->bitrate = rate->bitrate; | |
808 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 809 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
810 | |
811 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
812 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
813 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
814 | } | |
95ea3627 ID |
815 | } |
816 | ||
817 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
818 | struct hw_mode_spec *spec) | |
819 | { | |
820 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
821 | struct ieee80211_channel *channels; |
822 | struct ieee80211_rate *rates; | |
31562e80 | 823 | unsigned int num_rates; |
95ea3627 | 824 | unsigned int i; |
95ea3627 | 825 | |
31562e80 ID |
826 | num_rates = 0; |
827 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
828 | num_rates += 4; | |
829 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
830 | num_rates += 8; | |
95ea3627 ID |
831 | |
832 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
833 | if (!channels) | |
8318d78a | 834 | return -ENOMEM; |
95ea3627 | 835 | |
31562e80 | 836 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
837 | if (!rates) |
838 | goto exit_free_channels; | |
839 | ||
840 | /* | |
841 | * Initialize Rate list. | |
842 | */ | |
31562e80 | 843 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 844 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
845 | |
846 | /* | |
847 | * Initialize Channel list. | |
848 | */ | |
849 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 850 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
851 | spec->channels[i].channel, |
852 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
853 | } |
854 | ||
855 | /* | |
31562e80 | 856 | * Intitialize 802.11b, 802.11g |
95ea3627 | 857 | * Rates: CCK, OFDM. |
8318d78a | 858 | * Channels: 2.4 GHz |
95ea3627 | 859 | */ |
47ac2683 | 860 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
861 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
862 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
863 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
864 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
865 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
866 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
867 | } |
868 | ||
869 | /* | |
870 | * Intitialize 802.11a | |
871 | * Rates: OFDM. | |
872 | * Channels: OFDM, UNII, HiperLAN2. | |
873 | */ | |
47ac2683 | 874 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
875 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
876 | spec->num_channels - 14; | |
877 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
878 | num_rates - 4; | |
879 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
880 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
881 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
882 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
883 | } |
884 | ||
95ea3627 ID |
885 | return 0; |
886 | ||
8318d78a | 887 | exit_free_channels: |
95ea3627 | 888 | kfree(channels); |
95ea3627 ID |
889 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
890 | return -ENOMEM; | |
891 | } | |
892 | ||
893 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
894 | { | |
0262ab0d | 895 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
896 | ieee80211_unregister_hw(rt2x00dev->hw); |
897 | ||
8318d78a JB |
898 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
899 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
900 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
901 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
902 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 903 | } |
8c5e7a5f ID |
904 | |
905 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
906 | } |
907 | ||
908 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
909 | { | |
910 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
911 | int status; | |
912 | ||
0262ab0d ID |
913 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
914 | return 0; | |
915 | ||
95ea3627 ID |
916 | /* |
917 | * Initialize HW modes. | |
918 | */ | |
919 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
920 | if (status) | |
921 | return status; | |
922 | ||
61448f88 GW |
923 | /* |
924 | * Initialize HW fields. | |
925 | */ | |
926 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
927 | ||
95ea3627 ID |
928 | /* |
929 | * Register HW. | |
930 | */ | |
931 | status = ieee80211_register_hw(rt2x00dev->hw); | |
932 | if (status) { | |
933 | rt2x00lib_remove_hw(rt2x00dev); | |
934 | return status; | |
935 | } | |
936 | ||
0262ab0d | 937 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
938 | |
939 | return 0; | |
940 | } | |
941 | ||
942 | /* | |
943 | * Initialization/uninitialization handlers. | |
944 | */ | |
e37ea213 | 945 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 946 | { |
0262ab0d | 947 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
948 | return; |
949 | ||
950 | /* | |
1682fe6d | 951 | * Unregister extra components. |
95ea3627 ID |
952 | */ |
953 | rt2x00rfkill_unregister(rt2x00dev); | |
954 | ||
955 | /* | |
956 | * Allow the HW to uninitialize. | |
957 | */ | |
958 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
959 | ||
960 | /* | |
181d6902 | 961 | * Free allocated queue entries. |
95ea3627 | 962 | */ |
181d6902 | 963 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
964 | } |
965 | ||
e37ea213 | 966 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
967 | { |
968 | int status; | |
969 | ||
0262ab0d | 970 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
971 | return 0; |
972 | ||
973 | /* | |
181d6902 | 974 | * Allocate all queue entries. |
95ea3627 | 975 | */ |
181d6902 ID |
976 | status = rt2x00queue_initialize(rt2x00dev); |
977 | if (status) | |
95ea3627 | 978 | return status; |
95ea3627 ID |
979 | |
980 | /* | |
981 | * Initialize the device. | |
982 | */ | |
983 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
984 | if (status) { |
985 | rt2x00queue_uninitialize(rt2x00dev); | |
986 | return status; | |
987 | } | |
95ea3627 | 988 | |
0262ab0d | 989 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
990 | |
991 | /* | |
1682fe6d | 992 | * Register the extra components. |
95ea3627 | 993 | */ |
1682fe6d | 994 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
995 | |
996 | return 0; | |
95ea3627 ID |
997 | } |
998 | ||
e37ea213 ID |
999 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
1000 | { | |
1001 | int retval; | |
1002 | ||
0262ab0d | 1003 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1004 | return 0; |
1005 | ||
1006 | /* | |
1007 | * If this is the first interface which is added, | |
1008 | * we should load the firmware now. | |
1009 | */ | |
9404ef34 ID |
1010 | retval = rt2x00lib_load_firmware(rt2x00dev); |
1011 | if (retval) | |
1012 | return retval; | |
e37ea213 ID |
1013 | |
1014 | /* | |
1015 | * Initialize the device. | |
1016 | */ | |
1017 | retval = rt2x00lib_initialize(rt2x00dev); | |
1018 | if (retval) | |
1019 | return retval; | |
1020 | ||
6bb40dd1 ID |
1021 | rt2x00dev->intf_ap_count = 0; |
1022 | rt2x00dev->intf_sta_count = 0; | |
1023 | rt2x00dev->intf_associated = 0; | |
1024 | ||
0262ab0d | 1025 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
1026 | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1031 | { | |
0262ab0d | 1032 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1033 | return; |
1034 | ||
1035 | /* | |
1036 | * Perhaps we can add something smarter here, | |
1037 | * but for now just disabling the radio should do. | |
1038 | */ | |
1039 | rt2x00lib_disable_radio(rt2x00dev); | |
1040 | ||
6bb40dd1 ID |
1041 | rt2x00dev->intf_ap_count = 0; |
1042 | rt2x00dev->intf_sta_count = 0; | |
1043 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
1044 | } |
1045 | ||
95ea3627 ID |
1046 | /* |
1047 | * driver allocation handlers. | |
1048 | */ | |
95ea3627 ID |
1049 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1050 | { | |
1051 | int retval = -ENOMEM; | |
1052 | ||
6bb40dd1 ID |
1053 | /* |
1054 | * Make room for rt2x00_intf inside the per-interface | |
1055 | * structure ieee80211_vif. | |
1056 | */ | |
1057 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1058 | ||
f59ac048 LR |
1059 | rt2x00dev->hw->wiphy->interface_modes = |
1060 | BIT(NL80211_IFTYPE_AP) | | |
1061 | BIT(NL80211_IFTYPE_STATION) | | |
1062 | BIT(NL80211_IFTYPE_ADHOC); | |
1063 | ||
95ea3627 ID |
1064 | /* |
1065 | * Let the driver probe the device to detect the capabilities. | |
1066 | */ | |
1067 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1068 | if (retval) { | |
1069 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1070 | goto exit; | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * Initialize configuration work. | |
1075 | */ | |
6bb40dd1 | 1076 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 1077 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
1078 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
1079 | ||
95ea3627 | 1080 | /* |
181d6902 | 1081 | * Allocate queue array. |
95ea3627 | 1082 | */ |
181d6902 | 1083 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1084 | if (retval) |
1085 | goto exit; | |
1086 | ||
1087 | /* | |
1088 | * Initialize ieee80211 structure. | |
1089 | */ | |
1090 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1091 | if (retval) { | |
1092 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1093 | goto exit; | |
1094 | } | |
1095 | ||
a9450b70 | 1096 | /* |
1682fe6d | 1097 | * Register extra components. |
a9450b70 ID |
1098 | */ |
1099 | rt2x00leds_register(rt2x00dev); | |
1682fe6d | 1100 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
1101 | rt2x00debug_register(rt2x00dev); |
1102 | ||
0262ab0d | 1103 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1104 | |
95ea3627 ID |
1105 | return 0; |
1106 | ||
1107 | exit: | |
1108 | rt2x00lib_remove_dev(rt2x00dev); | |
1109 | ||
1110 | return retval; | |
1111 | } | |
1112 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1113 | ||
1114 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1115 | { | |
0262ab0d | 1116 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1117 | |
95ea3627 ID |
1118 | /* |
1119 | * Disable radio. | |
1120 | */ | |
1121 | rt2x00lib_disable_radio(rt2x00dev); | |
1122 | ||
1123 | /* | |
1124 | * Uninitialize device. | |
1125 | */ | |
1126 | rt2x00lib_uninitialize(rt2x00dev); | |
1127 | ||
1128 | /* | |
1682fe6d | 1129 | * Free extra components |
95ea3627 ID |
1130 | */ |
1131 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 1132 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
1133 | rt2x00leds_unregister(rt2x00dev); |
1134 | ||
95ea3627 ID |
1135 | /* |
1136 | * Free ieee80211_hw memory. | |
1137 | */ | |
1138 | rt2x00lib_remove_hw(rt2x00dev); | |
1139 | ||
1140 | /* | |
1141 | * Free firmware image. | |
1142 | */ | |
1143 | rt2x00lib_free_firmware(rt2x00dev); | |
1144 | ||
1145 | /* | |
181d6902 | 1146 | * Free queue structures. |
95ea3627 | 1147 | */ |
181d6902 | 1148 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1149 | } |
1150 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1151 | ||
1152 | /* | |
1153 | * Device state handlers | |
1154 | */ | |
1155 | #ifdef CONFIG_PM | |
1156 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1157 | { | |
1158 | int retval; | |
1159 | ||
1160 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1161 | |
1162 | /* | |
1163 | * Only continue if mac80211 has open interfaces. | |
1164 | */ | |
0262ab0d ID |
1165 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
1166 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
066cb637 | 1167 | goto exit; |
0262ab0d ID |
1168 | |
1169 | set_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags); | |
95ea3627 ID |
1170 | |
1171 | /* | |
1682fe6d | 1172 | * Disable radio. |
95ea3627 | 1173 | */ |
e37ea213 | 1174 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1175 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1176 | |
1177 | /* | |
1178 | * Suspend/disable extra components. | |
1179 | */ | |
a9450b70 | 1180 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1181 | rt2x00debug_deregister(rt2x00dev); |
1182 | ||
066cb637 | 1183 | exit: |
95ea3627 | 1184 | /* |
9896322a ID |
1185 | * Set device mode to sleep for power management, |
1186 | * on some hardware this call seems to consistently fail. | |
1187 | * From the specifications it is hard to tell why it fails, | |
1188 | * and if this is a "bad thing". | |
1189 | * Overall it is safe to just ignore the failure and | |
1190 | * continue suspending. The only downside is that the | |
1191 | * device will not be in optimal power save mode, but with | |
1192 | * the radio and the other components already disabled the | |
1193 | * device is as good as disabled. | |
95ea3627 ID |
1194 | */ |
1195 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1196 | if (retval) | |
9896322a ID |
1197 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1198 | "continue suspending.\n"); | |
95ea3627 ID |
1199 | |
1200 | return 0; | |
1201 | } | |
1202 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1203 | ||
6bb40dd1 ID |
1204 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1205 | struct ieee80211_vif *vif) | |
1206 | { | |
1207 | struct rt2x00_dev *rt2x00dev = data; | |
1208 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1209 | ||
1210 | spin_lock(&intf->lock); | |
1211 | ||
1212 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1213 | vif->type, intf->mac, intf->bssid); | |
1214 | ||
1215 | ||
1216 | /* | |
1217 | * Master or Ad-hoc mode require a new beacon update. | |
1218 | */ | |
05c914fe JB |
1219 | if (vif->type == NL80211_IFTYPE_AP || |
1220 | vif->type == NL80211_IFTYPE_ADHOC) | |
6bb40dd1 ID |
1221 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
1222 | ||
1223 | spin_unlock(&intf->lock); | |
1224 | } | |
1225 | ||
95ea3627 ID |
1226 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1227 | { | |
95ea3627 ID |
1228 | int retval; |
1229 | ||
1230 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1231 | |
1232 | /* | |
1682fe6d | 1233 | * Restore/enable extra components. |
95ea3627 ID |
1234 | */ |
1235 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1236 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1237 | |
066cb637 | 1238 | /* |
6d7f9877 | 1239 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1240 | */ |
0262ab0d | 1241 | if (!test_and_clear_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1242 | return 0; |
1243 | ||
95ea3627 ID |
1244 | /* |
1245 | * Reinitialize device and all active interfaces. | |
1246 | */ | |
e37ea213 | 1247 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1248 | if (retval) |
1249 | goto exit; | |
1250 | ||
1251 | /* | |
1252 | * Reconfigure device. | |
1253 | */ | |
e8975581 | 1254 | retval = rt2x00mac_config(rt2x00dev->hw, ~0); |
74c0ee9b ID |
1255 | if (retval) |
1256 | goto exit; | |
95ea3627 | 1257 | |
6bb40dd1 ID |
1258 | /* |
1259 | * Iterator over each active interface to | |
1260 | * reconfigure the hardware. | |
1261 | */ | |
1262 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1263 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1264 | |
e37ea213 ID |
1265 | /* |
1266 | * We are ready again to receive requests from mac80211. | |
1267 | */ | |
0262ab0d | 1268 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1269 | |
066cb637 ID |
1270 | /* |
1271 | * It is possible that during that mac80211 has attempted | |
1272 | * to send frames while we were suspending or resuming. | |
1273 | * In that case we have disabled the TX queue and should | |
1274 | * now enable it again | |
1275 | */ | |
36d6825b | 1276 | ieee80211_wake_queues(rt2x00dev->hw); |
066cb637 | 1277 | |
95ea3627 | 1278 | /* |
6bb40dd1 ID |
1279 | * During interface iteration we might have changed the |
1280 | * delayed_flags, time to handles the event by calling | |
1281 | * the work handler directly. | |
95ea3627 | 1282 | */ |
6bb40dd1 | 1283 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1284 | |
95ea3627 ID |
1285 | return 0; |
1286 | ||
1287 | exit: | |
0262ab0d | 1288 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
1289 | rt2x00lib_uninitialize(rt2x00dev); |
1290 | rt2x00debug_deregister(rt2x00dev); | |
1291 | ||
95ea3627 ID |
1292 | return retval; |
1293 | } | |
1294 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1295 | #endif /* CONFIG_PM */ | |
1296 | ||
1297 | /* | |
1298 | * rt2x00lib module information. | |
1299 | */ | |
1300 | MODULE_AUTHOR(DRV_PROJECT); | |
1301 | MODULE_VERSION(DRV_VERSION); | |
1302 | MODULE_DESCRIPTION("rt2x00 library"); | |
1303 | MODULE_LICENSE("GPL"); |