Commit | Line | Data |
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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 | */ |
798b7adb | 104 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 105 | |
95ea3627 ID |
106 | /* |
107 | * Enable radio. | |
108 | */ | |
a2e1d52a ID |
109 | status = |
110 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
111 | if (status) |
112 | return status; | |
113 | ||
2b08da3f ID |
114 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
115 | ||
a2e1d52a | 116 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 117 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 118 | |
0262ab0d | 119 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
120 | |
121 | /* | |
122 | * Enable RX. | |
123 | */ | |
5cbf830e | 124 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
125 | |
126 | /* | |
127 | * Start the TX queues. | |
128 | */ | |
36d6825b | 129 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
130 | |
131 | return 0; | |
132 | } | |
133 | ||
134 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
135 | { | |
0262ab0d | 136 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
137 | return; |
138 | ||
95ea3627 ID |
139 | /* |
140 | * Stop the TX queues. | |
141 | */ | |
142 | ieee80211_stop_queues(rt2x00dev->hw); | |
143 | ||
144 | /* | |
145 | * Disable RX. | |
146 | */ | |
5cbf830e | 147 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
148 | |
149 | /* | |
150 | * Disable radio. | |
151 | */ | |
152 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 153 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 154 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 155 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
156 | } |
157 | ||
5cbf830e | 158 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 159 | { |
95ea3627 ID |
160 | /* |
161 | * When we are disabling the RX, we should also stop the link tuner. | |
162 | */ | |
5cbf830e | 163 | if (state == STATE_RADIO_RX_OFF) |
95ea3627 ID |
164 | rt2x00lib_stop_link_tuner(rt2x00dev); |
165 | ||
166 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
167 | ||
168 | /* | |
169 | * When we are enabling the RX, we should also start the link tuner. | |
170 | */ | |
5cbf830e | 171 | if (state == STATE_RADIO_RX_ON && |
6bb40dd1 | 172 | (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count)) |
95ea3627 ID |
173 | rt2x00lib_start_link_tuner(rt2x00dev); |
174 | } | |
175 | ||
69f81a2c ID |
176 | static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev) |
177 | { | |
6d64360a | 178 | struct antenna_setup ant; |
69f81a2c ID |
179 | int sample_a = |
180 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A); | |
181 | int sample_b = | |
182 | rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B); | |
183 | ||
6d64360a ID |
184 | memcpy(&ant, &rt2x00dev->link.ant.active, sizeof(ant)); |
185 | ||
69f81a2c ID |
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 | 202 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) |
6d64360a | 203 | ant.rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
69f81a2c | 204 | |
05253c93 | 205 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) |
6d64360a | 206 | ant.tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B; |
69f81a2c | 207 | |
6d64360a | 208 | rt2x00lib_config_antenna(rt2x00dev, &ant); |
69f81a2c ID |
209 | } |
210 | ||
211 | static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev) | |
212 | { | |
6d64360a | 213 | struct antenna_setup ant; |
69f81a2c ID |
214 | int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link); |
215 | int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr); | |
216 | ||
6d64360a ID |
217 | memcpy(&ant, &rt2x00dev->link.ant.active, sizeof(ant)); |
218 | ||
69f81a2c ID |
219 | /* |
220 | * Legacy driver indicates that we should swap antenna's | |
221 | * when the difference in RSSI is greater that 5. This | |
222 | * also should be done when the RSSI was actually better | |
223 | * then the previous sample. | |
224 | * When the difference exceeds the threshold we should | |
225 | * sample the rssi from the other antenna to make a valid | |
226 | * comparison between the 2 antennas. | |
227 | */ | |
b290d433 | 228 | if (abs(rssi_curr - rssi_old) < 5) |
69f81a2c ID |
229 | return; |
230 | ||
231 | rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE; | |
232 | ||
233 | if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) | |
6d64360a | 234 | ant.rx = (ant.rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
69f81a2c ID |
235 | |
236 | if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY) | |
6d64360a | 237 | ant.tx = (ant.tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A; |
69f81a2c | 238 | |
6d64360a | 239 | rt2x00lib_config_antenna(rt2x00dev, &ant); |
69f81a2c ID |
240 | } |
241 | ||
242 | static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev) | |
243 | { | |
244 | /* | |
245 | * Determine if software diversity is enabled for | |
246 | * either the TX or RX antenna (or both). | |
247 | * Always perform this check since within the link | |
248 | * tuner interval the configuration might have changed. | |
249 | */ | |
250 | rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY; | |
251 | rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY; | |
252 | ||
0f4ac38b | 253 | if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
69f81a2c | 254 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
0f4ac38b | 255 | if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
256 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
257 | ||
258 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && | |
259 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { | |
05253c93 | 260 | rt2x00dev->link.ant.flags = 0; |
69f81a2c ID |
261 | return; |
262 | } | |
263 | ||
264 | /* | |
265 | * If we have only sampled the data over the last period | |
266 | * we should now harvest the data. Otherwise just evaluate | |
267 | * the data. The latter should only be performed once | |
268 | * every 2 seconds. | |
269 | */ | |
270 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) | |
271 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); | |
272 | else if (rt2x00dev->link.count & 1) | |
273 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); | |
274 | } | |
275 | ||
276 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) | |
277 | { | |
278 | int avg_rssi = rssi; | |
279 | ||
280 | /* | |
281 | * Update global RSSI | |
282 | */ | |
283 | if (link->qual.avg_rssi) | |
284 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); | |
285 | link->qual.avg_rssi = avg_rssi; | |
286 | ||
287 | /* | |
288 | * Update antenna RSSI | |
289 | */ | |
290 | if (link->ant.rssi_ant) | |
291 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); | |
292 | link->ant.rssi_ant = rssi; | |
293 | } | |
294 | ||
ebcf26da | 295 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
95ea3627 | 296 | { |
ebcf26da ID |
297 | if (qual->rx_failed || qual->rx_success) |
298 | qual->rx_percentage = | |
299 | (qual->rx_success * 100) / | |
300 | (qual->rx_failed + qual->rx_success); | |
95ea3627 | 301 | else |
ebcf26da | 302 | qual->rx_percentage = 50; |
95ea3627 | 303 | |
ebcf26da ID |
304 | if (qual->tx_failed || qual->tx_success) |
305 | qual->tx_percentage = | |
306 | (qual->tx_success * 100) / | |
307 | (qual->tx_failed + qual->tx_success); | |
95ea3627 | 308 | else |
ebcf26da | 309 | qual->tx_percentage = 50; |
95ea3627 | 310 | |
ebcf26da ID |
311 | qual->rx_success = 0; |
312 | qual->rx_failed = 0; | |
313 | qual->tx_success = 0; | |
314 | qual->tx_failed = 0; | |
95ea3627 ID |
315 | } |
316 | ||
317 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, | |
318 | int rssi) | |
319 | { | |
320 | int rssi_percentage = 0; | |
321 | int signal; | |
322 | ||
323 | /* | |
324 | * We need a positive value for the RSSI. | |
325 | */ | |
326 | if (rssi < 0) | |
327 | rssi += rt2x00dev->rssi_offset; | |
328 | ||
329 | /* | |
330 | * Calculate the different percentages, | |
331 | * which will be used for the signal. | |
332 | */ | |
333 | if (rt2x00dev->rssi_offset) | |
334 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; | |
335 | ||
336 | /* | |
337 | * Add the individual percentages and use the WEIGHT | |
338 | * defines to calculate the current link signal. | |
339 | */ | |
340 | signal = ((WEIGHT_RSSI * rssi_percentage) + | |
ebcf26da ID |
341 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
342 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; | |
95ea3627 ID |
343 | |
344 | return (signal > 100) ? 100 : signal; | |
345 | } | |
346 | ||
347 | static void rt2x00lib_link_tuner(struct work_struct *work) | |
348 | { | |
349 | struct rt2x00_dev *rt2x00dev = | |
350 | container_of(work, struct rt2x00_dev, link.work.work); | |
351 | ||
25ab002f ID |
352 | /* |
353 | * When the radio is shutting down we should | |
354 | * immediately cease all link tuning. | |
355 | */ | |
0262ab0d | 356 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
25ab002f ID |
357 | return; |
358 | ||
95ea3627 ID |
359 | /* |
360 | * Update statistics. | |
361 | */ | |
ebcf26da | 362 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
95ea3627 | 363 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
ebcf26da | 364 | rt2x00dev->link.qual.rx_failed; |
95ea3627 | 365 | |
95ea3627 ID |
366 | /* |
367 | * Only perform the link tuning when Link tuning | |
368 | * has been enabled (This could have been disabled from the EEPROM). | |
369 | */ | |
370 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) | |
371 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); | |
372 | ||
725d99d4 ID |
373 | /* |
374 | * Precalculate a portion of the link signal which is | |
375 | * in based on the tx/rx success/failure counters. | |
376 | */ | |
ebcf26da | 377 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
725d99d4 | 378 | |
a9450b70 ID |
379 | /* |
380 | * Send a signal to the led to update the led signal strength. | |
381 | */ | |
382 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); | |
383 | ||
53b3f8e4 ID |
384 | /* |
385 | * Evaluate antenna setup, make this the last step since this could | |
386 | * possibly reset some statistics. | |
387 | */ | |
388 | rt2x00lib_evaluate_antenna(rt2x00dev); | |
389 | ||
95ea3627 ID |
390 | /* |
391 | * Increase tuner counter, and reschedule the next link tuner run. | |
392 | */ | |
393 | rt2x00dev->link.count++; | |
8e260c22 | 394 | queue_delayed_work(rt2x00dev->hw->workqueue, |
980dfcb9 | 395 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); |
95ea3627 ID |
396 | } |
397 | ||
4150c572 JB |
398 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
399 | { | |
400 | struct rt2x00_dev *rt2x00dev = | |
401 | container_of(work, struct rt2x00_dev, filter_work); | |
5886d0db | 402 | |
133adf08 | 403 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
4150c572 JB |
404 | } |
405 | ||
6bb40dd1 ID |
406 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
407 | struct ieee80211_vif *vif) | |
5c58ee51 | 408 | { |
6bb40dd1 ID |
409 | struct rt2x00_dev *rt2x00dev = data; |
410 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
411 | struct ieee80211_bss_conf conf; |
412 | int delayed_flags; | |
413 | ||
414 | /* | |
415 | * Copy all data we need during this action under the protection | |
416 | * of a spinlock. Otherwise race conditions might occur which results | |
417 | * into an invalid configuration. | |
418 | */ | |
419 | spin_lock(&intf->lock); | |
420 | ||
c3fd7b41 | 421 | memcpy(&conf, &vif->bss_conf, sizeof(conf)); |
6bb40dd1 ID |
422 | delayed_flags = intf->delayed_flags; |
423 | intf->delayed_flags = 0; | |
424 | ||
425 | spin_unlock(&intf->lock); | |
426 | ||
980dfcb9 ID |
427 | /* |
428 | * It is possible the radio was disabled while the work had been | |
429 | * scheduled. If that happens we should return here immediately, | |
430 | * note that in the spinlock protected area above the delayed_flags | |
431 | * have been cleared correctly. | |
432 | */ | |
0262ab0d | 433 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
434 | return; |
435 | ||
bd88a781 ID |
436 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
437 | rt2x00queue_update_beacon(rt2x00dev, vif); | |
6bb40dd1 | 438 | |
72810379 | 439 | if (delayed_flags & DELAYED_CONFIG_ERP) |
980dfcb9 | 440 | rt2x00lib_config_erp(rt2x00dev, intf, &conf); |
a2e1d52a ID |
441 | |
442 | if (delayed_flags & DELAYED_LED_ASSOC) | |
443 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 444 | } |
5c58ee51 | 445 | |
6bb40dd1 ID |
446 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
447 | { | |
448 | struct rt2x00_dev *rt2x00dev = | |
449 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
450 | |
451 | /* | |
6bb40dd1 ID |
452 | * Iterate over each interface and perform the |
453 | * requested configurations. | |
471b3efd | 454 | */ |
6bb40dd1 ID |
455 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
456 | rt2x00lib_intf_scheduled_iter, | |
457 | rt2x00dev); | |
5c58ee51 ID |
458 | } |
459 | ||
95ea3627 ID |
460 | /* |
461 | * Interrupt context handlers. | |
462 | */ | |
6bb40dd1 ID |
463 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
464 | struct ieee80211_vif *vif) | |
95ea3627 | 465 | { |
c4da0048 | 466 | struct rt2x00_dev *rt2x00dev = data; |
6bb40dd1 | 467 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 468 | |
05c914fe JB |
469 | if (vif->type != NL80211_IFTYPE_AP && |
470 | vif->type != NL80211_IFTYPE_ADHOC) | |
95ea3627 ID |
471 | return; |
472 | ||
c95edf54 GW |
473 | /* |
474 | * Clean up the beacon skb. | |
475 | */ | |
c4da0048 | 476 | rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb); |
c95edf54 GW |
477 | intf->beacon->skb = NULL; |
478 | ||
6bb40dd1 ID |
479 | spin_lock(&intf->lock); |
480 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
481 | spin_unlock(&intf->lock); | |
95ea3627 ID |
482 | } |
483 | ||
484 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
485 | { | |
0262ab0d | 486 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
487 | return; |
488 | ||
633257d3 ID |
489 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
490 | rt2x00lib_beacondone_iter, | |
491 | rt2x00dev); | |
6bb40dd1 | 492 | |
8e260c22 | 493 | schedule_work(&rt2x00dev->intf_work); |
95ea3627 ID |
494 | } |
495 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
496 | ||
181d6902 ID |
497 | void rt2x00lib_txdone(struct queue_entry *entry, |
498 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 499 | { |
181d6902 | 500 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 501 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 502 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 503 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
e6a9854b | 504 | u8 rate_idx, rate_flags; |
d74f5ba4 ID |
505 | |
506 | /* | |
507 | * Unmap the skb. | |
508 | */ | |
509 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a | 510 | |
2bb057d0 ID |
511 | /* |
512 | * If the IV/EIV data was stripped from the frame before it was | |
513 | * passed to the hardware, we should now reinsert it again because | |
514 | * mac80211 will expect the the same data to be present it the | |
515 | * frame as it was passed to us. | |
516 | */ | |
517 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
518 | rt2x00crypto_tx_insert_iv(entry->skb); | |
519 | ||
e039fa4a JB |
520 | /* |
521 | * Send frame to debugfs immediately, after this call is completed | |
522 | * we are going to overwrite the skb->cb array. | |
523 | */ | |
524 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
525 | |
526 | /* | |
527 | * Update TX statistics. | |
528 | */ | |
fb55f4d1 ID |
529 | rt2x00dev->link.qual.tx_success += |
530 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
531 | rt2x00dev->link.qual.tx_failed += | |
cb14cb79 | 532 | test_bit(TXDONE_FAILURE, &txdesc->flags); |
95ea3627 | 533 | |
e6a9854b JB |
534 | rate_idx = skbdesc->tx_rate_idx; |
535 | rate_flags = skbdesc->tx_rate_flags; | |
536 | ||
181d6902 ID |
537 | /* |
538 | * Initialize TX status | |
539 | */ | |
e039fa4a JB |
540 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
541 | tx_info->status.ack_signal = 0; | |
e6a9854b JB |
542 | tx_info->status.rates[0].idx = rate_idx; |
543 | tx_info->status.rates[0].flags = rate_flags; | |
544 | tx_info->status.rates[0].count = txdesc->retry + 1; | |
545 | tx_info->status.rates[1].idx = -1; /* terminate */ | |
181d6902 | 546 | |
e039fa4a | 547 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
fb55f4d1 | 548 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
e039fa4a | 549 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
fb55f4d1 | 550 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 551 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
552 | } |
553 | ||
e6a9854b | 554 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
fb55f4d1 | 555 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 556 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 557 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 558 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
559 | } |
560 | ||
561 | /* | |
e039fa4a JB |
562 | * Only send the status report to mac80211 when TX status was |
563 | * requested by it. If this was a extra frame coming through | |
564 | * a mac80211 library call (RTS/CTS) then we should not send the | |
565 | * status report back. | |
95ea3627 | 566 | */ |
e039fa4a JB |
567 | if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) |
568 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
baf26a7e | 569 | else |
fb55f4d1 | 570 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
571 | |
572 | /* | |
573 | * Make this entry available for reuse. | |
574 | */ | |
95ea3627 | 575 | entry->skb = NULL; |
d74f5ba4 ID |
576 | entry->flags = 0; |
577 | ||
798b7adb | 578 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 579 | |
0262ab0d | 580 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
581 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
582 | ||
583 | /* | |
584 | * If the data queue was below the threshold before the txdone | |
585 | * handler we must make sure the packet queue in the mac80211 stack | |
586 | * is reenabled when the txdone handler has finished. | |
587 | */ | |
588 | if (!rt2x00queue_threshold(entry->queue)) | |
589 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
590 | } |
591 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
592 | ||
c4da0048 GW |
593 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
594 | struct queue_entry *entry) | |
95ea3627 | 595 | { |
c4da0048 GW |
596 | struct rxdone_entry_desc rxdesc; |
597 | struct sk_buff *skb; | |
95ea3627 | 598 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 599 | struct ieee80211_supported_band *sband; |
61af43c5 | 600 | struct ieee80211_hdr *hdr; |
70e2fed4 | 601 | const struct rt2x00_rate *rate; |
2bb057d0 | 602 | unsigned int header_length; |
239c249d | 603 | unsigned int align; |
95ea3627 | 604 | unsigned int i; |
70e2fed4 | 605 | int idx = -1; |
95ea3627 | 606 | |
c4da0048 GW |
607 | /* |
608 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
609 | * received frame and reuse the existing buffer. | |
610 | */ | |
611 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
612 | if (!skb) | |
613 | return; | |
614 | ||
615 | /* | |
616 | * Unmap the skb. | |
617 | */ | |
618 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
619 | ||
620 | /* | |
621 | * Extract the RXD details. | |
622 | */ | |
623 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
624 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 625 | |
239c249d GW |
626 | /* |
627 | * The data behind the ieee80211 header must be | |
a9f853dd | 628 | * aligned on a 4 byte boundary. |
239c249d | 629 | */ |
2bb057d0 ID |
630 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
631 | align = ((unsigned long)(entry->skb->data + header_length)) & 3; | |
239c249d | 632 | |
2bb057d0 ID |
633 | /* |
634 | * Hardware might have stripped the IV/EIV/ICV data, | |
635 | * in that case it is possible that the data was | |
636 | * provided seperately (through hardware descriptor) | |
637 | * in which case we should reinsert the data into the frame. | |
638 | */ | |
639 | if ((rxdesc.flags & RX_FLAG_IV_STRIPPED)) { | |
640 | rt2x00crypto_rx_insert_iv(entry->skb, align, | |
641 | header_length, &rxdesc); | |
642 | } else if (align) { | |
239c249d GW |
643 | skb_push(entry->skb, align); |
644 | /* Move entire frame in 1 command */ | |
645 | memmove(entry->skb->data, entry->skb->data + align, | |
c4da0048 | 646 | rxdesc.size); |
239c249d GW |
647 | } |
648 | ||
649 | /* Update data pointers, trim buffer to correct size */ | |
c4da0048 | 650 | skb_trim(entry->skb, rxdesc.size); |
239c249d | 651 | |
95ea3627 ID |
652 | /* |
653 | * Update RX statistics. | |
654 | */ | |
8318d78a JB |
655 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
656 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 657 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 658 | |
c4da0048 GW |
659 | if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && |
660 | (rate->plcp == rxdesc.signal)) || | |
6c6aa3c0 | 661 | ((rxdesc.dev_flags & RXDONE_SIGNAL_BITRATE) && |
c4da0048 | 662 | (rate->bitrate == rxdesc.signal))) { |
8318d78a | 663 | idx = i; |
95ea3627 ID |
664 | break; |
665 | } | |
666 | } | |
667 | ||
866a0503 ID |
668 | if (idx < 0) { |
669 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
c4da0048 GW |
670 | "signal=0x%.2x, plcp=%d.\n", rxdesc.signal, |
671 | !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP)); | |
866a0503 ID |
672 | idx = 0; |
673 | } | |
674 | ||
61af43c5 | 675 | /* |
7e56d38d | 676 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 677 | */ |
70e2fed4 | 678 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
ac104462 | 679 | if (ieee80211_is_beacon(hdr->frame_control) && |
c4da0048 GW |
680 | (rxdesc.dev_flags & RXDONE_MY_BSS)) |
681 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc.rssi); | |
61af43c5 | 682 | |
2bb057d0 ID |
683 | rt2x00debug_update_crypto(rt2x00dev, |
684 | rxdesc.cipher, | |
685 | rxdesc.cipher_status); | |
686 | ||
ebcf26da | 687 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 688 | |
ae73e58e | 689 | rx_status->mactime = rxdesc.timestamp; |
8318d78a | 690 | rx_status->rate_idx = idx; |
566bfe5a | 691 | rx_status->qual = |
c4da0048 GW |
692 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc.rssi); |
693 | rx_status->signal = rxdesc.rssi; | |
694 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 695 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
696 | |
697 | /* | |
181d6902 ID |
698 | * Send frame to mac80211 & debugfs. |
699 | * mac80211 will clean up the skb structure. | |
95ea3627 | 700 | */ |
5a6e5999 | 701 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 | 702 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
c4da0048 GW |
703 | |
704 | /* | |
705 | * Replace the skb with the freshly allocated one. | |
706 | */ | |
707 | entry->skb = skb; | |
d74f5ba4 ID |
708 | entry->flags = 0; |
709 | ||
798b7adb | 710 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
711 | |
712 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
713 | } |
714 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
715 | ||
95ea3627 ID |
716 | /* |
717 | * Driver initialization handlers. | |
718 | */ | |
70e2fed4 ID |
719 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
720 | { | |
3d8606a6 | 721 | .flags = DEV_RATE_CCK, |
70e2fed4 | 722 | .bitrate = 10, |
aa776721 | 723 | .ratemask = BIT(0), |
70e2fed4 ID |
724 | .plcp = 0x00, |
725 | }, | |
726 | { | |
3d8606a6 | 727 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 728 | .bitrate = 20, |
aa776721 | 729 | .ratemask = BIT(1), |
70e2fed4 ID |
730 | .plcp = 0x01, |
731 | }, | |
732 | { | |
3d8606a6 | 733 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 734 | .bitrate = 55, |
aa776721 | 735 | .ratemask = BIT(2), |
70e2fed4 ID |
736 | .plcp = 0x02, |
737 | }, | |
738 | { | |
3d8606a6 | 739 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 740 | .bitrate = 110, |
aa776721 | 741 | .ratemask = BIT(3), |
70e2fed4 ID |
742 | .plcp = 0x03, |
743 | }, | |
744 | { | |
3d8606a6 | 745 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 746 | .bitrate = 60, |
aa776721 | 747 | .ratemask = BIT(4), |
70e2fed4 ID |
748 | .plcp = 0x0b, |
749 | }, | |
750 | { | |
751 | .flags = DEV_RATE_OFDM, | |
752 | .bitrate = 90, | |
aa776721 | 753 | .ratemask = BIT(5), |
70e2fed4 ID |
754 | .plcp = 0x0f, |
755 | }, | |
756 | { | |
3d8606a6 | 757 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 758 | .bitrate = 120, |
aa776721 | 759 | .ratemask = BIT(6), |
70e2fed4 ID |
760 | .plcp = 0x0a, |
761 | }, | |
762 | { | |
763 | .flags = DEV_RATE_OFDM, | |
764 | .bitrate = 180, | |
aa776721 | 765 | .ratemask = BIT(7), |
70e2fed4 ID |
766 | .plcp = 0x0e, |
767 | }, | |
768 | { | |
3d8606a6 | 769 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 770 | .bitrate = 240, |
aa776721 | 771 | .ratemask = BIT(8), |
70e2fed4 ID |
772 | .plcp = 0x09, |
773 | }, | |
774 | { | |
775 | .flags = DEV_RATE_OFDM, | |
776 | .bitrate = 360, | |
aa776721 | 777 | .ratemask = BIT(9), |
70e2fed4 ID |
778 | .plcp = 0x0d, |
779 | }, | |
780 | { | |
781 | .flags = DEV_RATE_OFDM, | |
782 | .bitrate = 480, | |
aa776721 | 783 | .ratemask = BIT(10), |
70e2fed4 ID |
784 | .plcp = 0x08, |
785 | }, | |
786 | { | |
787 | .flags = DEV_RATE_OFDM, | |
788 | .bitrate = 540, | |
aa776721 | 789 | .ratemask = BIT(11), |
70e2fed4 ID |
790 | .plcp = 0x0c, |
791 | }, | |
792 | }; | |
793 | ||
95ea3627 ID |
794 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
795 | const int channel, const int tx_power, | |
796 | const int value) | |
797 | { | |
f2a3c7f5 | 798 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
799 | entry->hw_value = value; |
800 | entry->max_power = tx_power; | |
801 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
802 | } |
803 | ||
804 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 805 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 806 | { |
70e2fed4 ID |
807 | entry->flags = 0; |
808 | entry->bitrate = rate->bitrate; | |
809 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 810 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
811 | |
812 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
813 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
814 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
815 | } | |
95ea3627 ID |
816 | } |
817 | ||
818 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
819 | struct hw_mode_spec *spec) | |
820 | { | |
821 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
822 | struct ieee80211_channel *channels; |
823 | struct ieee80211_rate *rates; | |
31562e80 | 824 | unsigned int num_rates; |
95ea3627 | 825 | unsigned int i; |
95ea3627 | 826 | |
31562e80 ID |
827 | num_rates = 0; |
828 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
829 | num_rates += 4; | |
830 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
831 | num_rates += 8; | |
95ea3627 ID |
832 | |
833 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
834 | if (!channels) | |
8318d78a | 835 | return -ENOMEM; |
95ea3627 | 836 | |
31562e80 | 837 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
838 | if (!rates) |
839 | goto exit_free_channels; | |
840 | ||
841 | /* | |
842 | * Initialize Rate list. | |
843 | */ | |
31562e80 | 844 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 845 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
846 | |
847 | /* | |
848 | * Initialize Channel list. | |
849 | */ | |
850 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 851 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
852 | spec->channels[i].channel, |
853 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
854 | } |
855 | ||
856 | /* | |
31562e80 | 857 | * Intitialize 802.11b, 802.11g |
95ea3627 | 858 | * Rates: CCK, OFDM. |
8318d78a | 859 | * Channels: 2.4 GHz |
95ea3627 | 860 | */ |
47ac2683 | 861 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
862 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
863 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
864 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
865 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
866 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
867 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
868 | } |
869 | ||
870 | /* | |
871 | * Intitialize 802.11a | |
872 | * Rates: OFDM. | |
873 | * Channels: OFDM, UNII, HiperLAN2. | |
874 | */ | |
47ac2683 | 875 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
876 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
877 | spec->num_channels - 14; | |
878 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
879 | num_rates - 4; | |
880 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
881 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
882 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
883 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
884 | } |
885 | ||
95ea3627 ID |
886 | return 0; |
887 | ||
8318d78a | 888 | exit_free_channels: |
95ea3627 | 889 | kfree(channels); |
95ea3627 ID |
890 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
891 | return -ENOMEM; | |
892 | } | |
893 | ||
894 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
895 | { | |
0262ab0d | 896 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
897 | ieee80211_unregister_hw(rt2x00dev->hw); |
898 | ||
8318d78a JB |
899 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
900 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
901 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
902 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
903 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 904 | } |
8c5e7a5f ID |
905 | |
906 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
907 | } |
908 | ||
909 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
910 | { | |
911 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
912 | int status; | |
913 | ||
0262ab0d ID |
914 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
915 | return 0; | |
916 | ||
95ea3627 ID |
917 | /* |
918 | * Initialize HW modes. | |
919 | */ | |
920 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
921 | if (status) | |
922 | return status; | |
923 | ||
61448f88 GW |
924 | /* |
925 | * Initialize HW fields. | |
926 | */ | |
927 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
928 | ||
95ea3627 ID |
929 | /* |
930 | * Register HW. | |
931 | */ | |
932 | status = ieee80211_register_hw(rt2x00dev->hw); | |
933 | if (status) { | |
934 | rt2x00lib_remove_hw(rt2x00dev); | |
935 | return status; | |
936 | } | |
937 | ||
0262ab0d | 938 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
939 | |
940 | return 0; | |
941 | } | |
942 | ||
943 | /* | |
944 | * Initialization/uninitialization handlers. | |
945 | */ | |
e37ea213 | 946 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 947 | { |
0262ab0d | 948 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
949 | return; |
950 | ||
951 | /* | |
1682fe6d | 952 | * Unregister extra components. |
95ea3627 ID |
953 | */ |
954 | rt2x00rfkill_unregister(rt2x00dev); | |
955 | ||
956 | /* | |
957 | * Allow the HW to uninitialize. | |
958 | */ | |
959 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
960 | ||
961 | /* | |
181d6902 | 962 | * Free allocated queue entries. |
95ea3627 | 963 | */ |
181d6902 | 964 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
965 | } |
966 | ||
e37ea213 | 967 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
968 | { |
969 | int status; | |
970 | ||
0262ab0d | 971 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
972 | return 0; |
973 | ||
974 | /* | |
181d6902 | 975 | * Allocate all queue entries. |
95ea3627 | 976 | */ |
181d6902 ID |
977 | status = rt2x00queue_initialize(rt2x00dev); |
978 | if (status) | |
95ea3627 | 979 | return status; |
95ea3627 ID |
980 | |
981 | /* | |
982 | * Initialize the device. | |
983 | */ | |
984 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
985 | if (status) { |
986 | rt2x00queue_uninitialize(rt2x00dev); | |
987 | return status; | |
988 | } | |
95ea3627 | 989 | |
0262ab0d | 990 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
991 | |
992 | /* | |
1682fe6d | 993 | * Register the extra components. |
95ea3627 | 994 | */ |
1682fe6d | 995 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
996 | |
997 | return 0; | |
95ea3627 ID |
998 | } |
999 | ||
e37ea213 ID |
1000 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
1001 | { | |
1002 | int retval; | |
1003 | ||
0262ab0d | 1004 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1005 | return 0; |
1006 | ||
1007 | /* | |
1008 | * If this is the first interface which is added, | |
1009 | * we should load the firmware now. | |
1010 | */ | |
9404ef34 ID |
1011 | retval = rt2x00lib_load_firmware(rt2x00dev); |
1012 | if (retval) | |
1013 | return retval; | |
e37ea213 ID |
1014 | |
1015 | /* | |
1016 | * Initialize the device. | |
1017 | */ | |
1018 | retval = rt2x00lib_initialize(rt2x00dev); | |
1019 | if (retval) | |
1020 | return retval; | |
1021 | ||
6bb40dd1 ID |
1022 | rt2x00dev->intf_ap_count = 0; |
1023 | rt2x00dev->intf_sta_count = 0; | |
1024 | rt2x00dev->intf_associated = 0; | |
1025 | ||
0262ab0d | 1026 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
1027 | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1032 | { | |
0262ab0d | 1033 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1034 | return; |
1035 | ||
1036 | /* | |
1037 | * Perhaps we can add something smarter here, | |
1038 | * but for now just disabling the radio should do. | |
1039 | */ | |
1040 | rt2x00lib_disable_radio(rt2x00dev); | |
1041 | ||
6bb40dd1 ID |
1042 | rt2x00dev->intf_ap_count = 0; |
1043 | rt2x00dev->intf_sta_count = 0; | |
1044 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
1045 | } |
1046 | ||
95ea3627 ID |
1047 | /* |
1048 | * driver allocation handlers. | |
1049 | */ | |
95ea3627 ID |
1050 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1051 | { | |
1052 | int retval = -ENOMEM; | |
1053 | ||
8ff48a8b ID |
1054 | mutex_init(&rt2x00dev->csr_mutex); |
1055 | ||
6bb40dd1 ID |
1056 | /* |
1057 | * Make room for rt2x00_intf inside the per-interface | |
1058 | * structure ieee80211_vif. | |
1059 | */ | |
1060 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1061 | ||
3514a441 ID |
1062 | /* |
1063 | * Determine which operating modes are supported, all modes | |
1064 | * which require beaconing, depend on the availability of | |
1065 | * beacon entries. | |
1066 | */ | |
1067 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
1068 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
1069 | rt2x00dev->hw->wiphy->interface_modes |= | |
1070 | BIT(NL80211_IFTYPE_ADHOC) | | |
1071 | BIT(NL80211_IFTYPE_AP); | |
f59ac048 | 1072 | |
95ea3627 ID |
1073 | /* |
1074 | * Let the driver probe the device to detect the capabilities. | |
1075 | */ | |
1076 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1077 | if (retval) { | |
1078 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1079 | goto exit; | |
1080 | } | |
1081 | ||
1082 | /* | |
1083 | * Initialize configuration work. | |
1084 | */ | |
6bb40dd1 | 1085 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 1086 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
1087 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
1088 | ||
95ea3627 | 1089 | /* |
181d6902 | 1090 | * Allocate queue array. |
95ea3627 | 1091 | */ |
181d6902 | 1092 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1093 | if (retval) |
1094 | goto exit; | |
1095 | ||
1096 | /* | |
1097 | * Initialize ieee80211 structure. | |
1098 | */ | |
1099 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1100 | if (retval) { | |
1101 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1102 | goto exit; | |
1103 | } | |
1104 | ||
a9450b70 | 1105 | /* |
1682fe6d | 1106 | * Register extra components. |
a9450b70 ID |
1107 | */ |
1108 | rt2x00leds_register(rt2x00dev); | |
1682fe6d | 1109 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
1110 | rt2x00debug_register(rt2x00dev); |
1111 | ||
0262ab0d | 1112 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1113 | |
95ea3627 ID |
1114 | return 0; |
1115 | ||
1116 | exit: | |
1117 | rt2x00lib_remove_dev(rt2x00dev); | |
1118 | ||
1119 | return retval; | |
1120 | } | |
1121 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1122 | ||
1123 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1124 | { | |
0262ab0d | 1125 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1126 | |
95ea3627 ID |
1127 | /* |
1128 | * Disable radio. | |
1129 | */ | |
1130 | rt2x00lib_disable_radio(rt2x00dev); | |
1131 | ||
1132 | /* | |
1133 | * Uninitialize device. | |
1134 | */ | |
1135 | rt2x00lib_uninitialize(rt2x00dev); | |
1136 | ||
1137 | /* | |
1682fe6d | 1138 | * Free extra components |
95ea3627 ID |
1139 | */ |
1140 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 1141 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
1142 | rt2x00leds_unregister(rt2x00dev); |
1143 | ||
95ea3627 ID |
1144 | /* |
1145 | * Free ieee80211_hw memory. | |
1146 | */ | |
1147 | rt2x00lib_remove_hw(rt2x00dev); | |
1148 | ||
1149 | /* | |
1150 | * Free firmware image. | |
1151 | */ | |
1152 | rt2x00lib_free_firmware(rt2x00dev); | |
1153 | ||
1154 | /* | |
181d6902 | 1155 | * Free queue structures. |
95ea3627 | 1156 | */ |
181d6902 | 1157 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1158 | } |
1159 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1160 | ||
1161 | /* | |
1162 | * Device state handlers | |
1163 | */ | |
1164 | #ifdef CONFIG_PM | |
1165 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1166 | { | |
1167 | int retval; | |
1168 | ||
1169 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1170 | |
1171 | /* | |
1172 | * Only continue if mac80211 has open interfaces. | |
1173 | */ | |
0262ab0d ID |
1174 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
1175 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
066cb637 | 1176 | goto exit; |
0262ab0d ID |
1177 | |
1178 | set_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags); | |
95ea3627 ID |
1179 | |
1180 | /* | |
1682fe6d | 1181 | * Disable radio. |
95ea3627 | 1182 | */ |
e37ea213 | 1183 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1184 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1185 | |
1186 | /* | |
1187 | * Suspend/disable extra components. | |
1188 | */ | |
a9450b70 | 1189 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1190 | rt2x00debug_deregister(rt2x00dev); |
1191 | ||
066cb637 | 1192 | exit: |
95ea3627 | 1193 | /* |
9896322a ID |
1194 | * Set device mode to sleep for power management, |
1195 | * on some hardware this call seems to consistently fail. | |
1196 | * From the specifications it is hard to tell why it fails, | |
1197 | * and if this is a "bad thing". | |
1198 | * Overall it is safe to just ignore the failure and | |
1199 | * continue suspending. The only downside is that the | |
1200 | * device will not be in optimal power save mode, but with | |
1201 | * the radio and the other components already disabled the | |
1202 | * device is as good as disabled. | |
95ea3627 ID |
1203 | */ |
1204 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1205 | if (retval) | |
9896322a ID |
1206 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1207 | "continue suspending.\n"); | |
95ea3627 ID |
1208 | |
1209 | return 0; | |
1210 | } | |
1211 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1212 | ||
6bb40dd1 ID |
1213 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1214 | struct ieee80211_vif *vif) | |
1215 | { | |
1216 | struct rt2x00_dev *rt2x00dev = data; | |
1217 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1218 | ||
1219 | spin_lock(&intf->lock); | |
1220 | ||
1221 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1222 | vif->type, intf->mac, intf->bssid); | |
1223 | ||
1224 | ||
1225 | /* | |
1226 | * Master or Ad-hoc mode require a new beacon update. | |
1227 | */ | |
05c914fe JB |
1228 | if (vif->type == NL80211_IFTYPE_AP || |
1229 | vif->type == NL80211_IFTYPE_ADHOC) | |
6bb40dd1 ID |
1230 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; |
1231 | ||
1232 | spin_unlock(&intf->lock); | |
1233 | } | |
1234 | ||
95ea3627 ID |
1235 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1236 | { | |
95ea3627 ID |
1237 | int retval; |
1238 | ||
1239 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1240 | |
1241 | /* | |
1682fe6d | 1242 | * Restore/enable extra components. |
95ea3627 ID |
1243 | */ |
1244 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1245 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1246 | |
066cb637 | 1247 | /* |
6d7f9877 | 1248 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1249 | */ |
0262ab0d | 1250 | if (!test_and_clear_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1251 | return 0; |
1252 | ||
95ea3627 ID |
1253 | /* |
1254 | * Reinitialize device and all active interfaces. | |
1255 | */ | |
e37ea213 | 1256 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1257 | if (retval) |
1258 | goto exit; | |
1259 | ||
1260 | /* | |
1261 | * Reconfigure device. | |
1262 | */ | |
e8975581 | 1263 | retval = rt2x00mac_config(rt2x00dev->hw, ~0); |
74c0ee9b ID |
1264 | if (retval) |
1265 | goto exit; | |
95ea3627 | 1266 | |
6bb40dd1 ID |
1267 | /* |
1268 | * Iterator over each active interface to | |
1269 | * reconfigure the hardware. | |
1270 | */ | |
1271 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1272 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1273 | |
e37ea213 ID |
1274 | /* |
1275 | * We are ready again to receive requests from mac80211. | |
1276 | */ | |
0262ab0d | 1277 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1278 | |
066cb637 ID |
1279 | /* |
1280 | * It is possible that during that mac80211 has attempted | |
1281 | * to send frames while we were suspending or resuming. | |
1282 | * In that case we have disabled the TX queue and should | |
1283 | * now enable it again | |
1284 | */ | |
36d6825b | 1285 | ieee80211_wake_queues(rt2x00dev->hw); |
066cb637 | 1286 | |
95ea3627 | 1287 | /* |
6bb40dd1 ID |
1288 | * During interface iteration we might have changed the |
1289 | * delayed_flags, time to handles the event by calling | |
1290 | * the work handler directly. | |
95ea3627 | 1291 | */ |
6bb40dd1 | 1292 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1293 | |
95ea3627 ID |
1294 | return 0; |
1295 | ||
1296 | exit: | |
0262ab0d | 1297 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
1298 | rt2x00lib_uninitialize(rt2x00dev); |
1299 | rt2x00debug_deregister(rt2x00dev); | |
1300 | ||
95ea3627 ID |
1301 | return retval; |
1302 | } | |
1303 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1304 | #endif /* CONFIG_PM */ | |
1305 | ||
1306 | /* | |
1307 | * rt2x00lib module information. | |
1308 | */ | |
1309 | MODULE_AUTHOR(DRV_PROJECT); | |
1310 | MODULE_VERSION(DRV_VERSION); | |
1311 | MODULE_DESCRIPTION("rt2x00 library"); | |
1312 | MODULE_LICENSE("GPL"); |