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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00lib | |
23 | Abstract: rt2x00 generic device routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
95ea3627 ID |
32 | /* |
33 | * Link tuning handlers | |
34 | */ | |
53b3f8e4 | 35 | void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 36 | { |
53b3f8e4 ID |
37 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) |
38 | return; | |
39 | ||
40 | /* | |
41 | * Reset link information. | |
42 | * Both the currently active vgc level as well as | |
43 | * the link tuner counter should be reset. Resetting | |
44 | * the counter is important for devices where the | |
45 | * device should only perform link tuning during the | |
46 | * first minute after being enabled. | |
47 | */ | |
8de8c516 ID |
48 | rt2x00dev->link.count = 0; |
49 | rt2x00dev->link.vgc_level = 0; | |
50 | ||
53b3f8e4 ID |
51 | /* |
52 | * Reset the link tuner. | |
53 | */ | |
54 | rt2x00dev->ops->lib->reset_tuner(rt2x00dev); | |
55 | } | |
56 | ||
57 | static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev) | |
58 | { | |
59 | /* | |
60 | * Clear all (possibly) pre-existing quality statistics. | |
61 | */ | |
8de8c516 ID |
62 | memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual)); |
63 | ||
64 | /* | |
65 | * The RX and TX percentage should start at 50% | |
66 | * this will assure we will get at least get some | |
67 | * decent value when the link tuner starts. | |
68 | * The value will be dropped and overwritten with | |
69 | * the correct (measured )value anyway during the | |
70 | * first run of the link tuner. | |
71 | */ | |
72 | rt2x00dev->link.qual.rx_percentage = 50; | |
73 | rt2x00dev->link.qual.tx_percentage = 50; | |
95ea3627 | 74 | |
53b3f8e4 | 75 | rt2x00lib_reset_link_tuner(rt2x00dev); |
95ea3627 | 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 | */ | |
97 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || | |
81873e9c | 98 | test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags)) |
95ea3627 ID |
99 | return 0; |
100 | ||
837e7f24 | 101 | /* |
181d6902 | 102 | * Initialize all data queues. |
837e7f24 | 103 | */ |
181d6902 ID |
104 | rt2x00queue_init_rx(rt2x00dev); |
105 | rt2x00queue_init_tx(rt2x00dev); | |
837e7f24 | 106 | |
95ea3627 ID |
107 | /* |
108 | * Enable radio. | |
109 | */ | |
a2e1d52a ID |
110 | status = |
111 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
112 | if (status) |
113 | return status; | |
114 | ||
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 | |
95ea3627 ID |
120 | __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags); |
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 | { | |
137 | if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
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 | ||
252 | if (rt2x00dev->hw->conf.antenna_sel_rx == 0 && | |
b290d433 | 253 | rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
254 | rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY; |
255 | if (rt2x00dev->hw->conf.antenna_sel_tx == 0 && | |
b290d433 | 256 | rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) |
69f81a2c ID |
257 | rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY; |
258 | ||
259 | if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) && | |
260 | !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) { | |
05253c93 | 261 | rt2x00dev->link.ant.flags = 0; |
69f81a2c ID |
262 | return; |
263 | } | |
264 | ||
265 | /* | |
266 | * If we have only sampled the data over the last period | |
267 | * we should now harvest the data. Otherwise just evaluate | |
268 | * the data. The latter should only be performed once | |
269 | * every 2 seconds. | |
270 | */ | |
271 | if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE) | |
272 | rt2x00lib_evaluate_antenna_sample(rt2x00dev); | |
273 | else if (rt2x00dev->link.count & 1) | |
274 | rt2x00lib_evaluate_antenna_eval(rt2x00dev); | |
275 | } | |
276 | ||
277 | static void rt2x00lib_update_link_stats(struct link *link, int rssi) | |
278 | { | |
279 | int avg_rssi = rssi; | |
280 | ||
281 | /* | |
282 | * Update global RSSI | |
283 | */ | |
284 | if (link->qual.avg_rssi) | |
285 | avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8); | |
286 | link->qual.avg_rssi = avg_rssi; | |
287 | ||
288 | /* | |
289 | * Update antenna RSSI | |
290 | */ | |
291 | if (link->ant.rssi_ant) | |
292 | rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8); | |
293 | link->ant.rssi_ant = rssi; | |
294 | } | |
295 | ||
ebcf26da | 296 | static void rt2x00lib_precalculate_link_signal(struct link_qual *qual) |
95ea3627 | 297 | { |
ebcf26da ID |
298 | if (qual->rx_failed || qual->rx_success) |
299 | qual->rx_percentage = | |
300 | (qual->rx_success * 100) / | |
301 | (qual->rx_failed + qual->rx_success); | |
95ea3627 | 302 | else |
ebcf26da | 303 | qual->rx_percentage = 50; |
95ea3627 | 304 | |
ebcf26da ID |
305 | if (qual->tx_failed || qual->tx_success) |
306 | qual->tx_percentage = | |
307 | (qual->tx_success * 100) / | |
308 | (qual->tx_failed + qual->tx_success); | |
95ea3627 | 309 | else |
ebcf26da | 310 | qual->tx_percentage = 50; |
95ea3627 | 311 | |
ebcf26da ID |
312 | qual->rx_success = 0; |
313 | qual->rx_failed = 0; | |
314 | qual->tx_success = 0; | |
315 | qual->tx_failed = 0; | |
95ea3627 ID |
316 | } |
317 | ||
318 | static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev, | |
319 | int rssi) | |
320 | { | |
321 | int rssi_percentage = 0; | |
322 | int signal; | |
323 | ||
324 | /* | |
325 | * We need a positive value for the RSSI. | |
326 | */ | |
327 | if (rssi < 0) | |
328 | rssi += rt2x00dev->rssi_offset; | |
329 | ||
330 | /* | |
331 | * Calculate the different percentages, | |
332 | * which will be used for the signal. | |
333 | */ | |
334 | if (rt2x00dev->rssi_offset) | |
335 | rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset; | |
336 | ||
337 | /* | |
338 | * Add the individual percentages and use the WEIGHT | |
339 | * defines to calculate the current link signal. | |
340 | */ | |
341 | signal = ((WEIGHT_RSSI * rssi_percentage) + | |
ebcf26da ID |
342 | (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) + |
343 | (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100; | |
95ea3627 ID |
344 | |
345 | return (signal > 100) ? 100 : signal; | |
346 | } | |
347 | ||
348 | static void rt2x00lib_link_tuner(struct work_struct *work) | |
349 | { | |
350 | struct rt2x00_dev *rt2x00dev = | |
351 | container_of(work, struct rt2x00_dev, link.work.work); | |
352 | ||
25ab002f ID |
353 | /* |
354 | * When the radio is shutting down we should | |
355 | * immediately cease all link tuning. | |
356 | */ | |
357 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
358 | return; | |
359 | ||
95ea3627 ID |
360 | /* |
361 | * Update statistics. | |
362 | */ | |
ebcf26da | 363 | rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual); |
95ea3627 | 364 | rt2x00dev->low_level_stats.dot11FCSErrorCount += |
ebcf26da | 365 | rt2x00dev->link.qual.rx_failed; |
95ea3627 | 366 | |
95ea3627 ID |
367 | /* |
368 | * Only perform the link tuning when Link tuning | |
369 | * has been enabled (This could have been disabled from the EEPROM). | |
370 | */ | |
371 | if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags)) | |
372 | rt2x00dev->ops->lib->link_tuner(rt2x00dev); | |
373 | ||
725d99d4 ID |
374 | /* |
375 | * Precalculate a portion of the link signal which is | |
376 | * in based on the tx/rx success/failure counters. | |
377 | */ | |
ebcf26da | 378 | rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual); |
725d99d4 | 379 | |
a9450b70 ID |
380 | /* |
381 | * Send a signal to the led to update the led signal strength. | |
382 | */ | |
383 | rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi); | |
384 | ||
53b3f8e4 ID |
385 | /* |
386 | * Evaluate antenna setup, make this the last step since this could | |
387 | * possibly reset some statistics. | |
388 | */ | |
389 | rt2x00lib_evaluate_antenna(rt2x00dev); | |
390 | ||
95ea3627 ID |
391 | /* |
392 | * Increase tuner counter, and reschedule the next link tuner run. | |
393 | */ | |
394 | rt2x00dev->link.count++; | |
8e260c22 | 395 | queue_delayed_work(rt2x00dev->hw->workqueue, |
980dfcb9 | 396 | &rt2x00dev->link.work, LINK_TUNE_INTERVAL); |
95ea3627 ID |
397 | } |
398 | ||
4150c572 JB |
399 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
400 | { | |
401 | struct rt2x00_dev *rt2x00dev = | |
402 | container_of(work, struct rt2x00_dev, filter_work); | |
5886d0db | 403 | |
133adf08 | 404 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
4150c572 JB |
405 | } |
406 | ||
6bb40dd1 ID |
407 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
408 | struct ieee80211_vif *vif) | |
5c58ee51 | 409 | { |
6bb40dd1 ID |
410 | struct rt2x00_dev *rt2x00dev = data; |
411 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
412 | struct ieee80211_bss_conf conf; |
413 | int delayed_flags; | |
414 | ||
415 | /* | |
416 | * Copy all data we need during this action under the protection | |
417 | * of a spinlock. Otherwise race conditions might occur which results | |
418 | * into an invalid configuration. | |
419 | */ | |
420 | spin_lock(&intf->lock); | |
421 | ||
422 | memcpy(&conf, &intf->conf, sizeof(conf)); | |
423 | delayed_flags = intf->delayed_flags; | |
424 | intf->delayed_flags = 0; | |
425 | ||
426 | spin_unlock(&intf->lock); | |
427 | ||
980dfcb9 ID |
428 | /* |
429 | * It is possible the radio was disabled while the work had been | |
430 | * scheduled. If that happens we should return here immediately, | |
431 | * note that in the spinlock protected area above the delayed_flags | |
432 | * have been cleared correctly. | |
433 | */ | |
434 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
435 | return; | |
436 | ||
6bb40dd1 | 437 | if (delayed_flags & DELAYED_UPDATE_BEACON) { |
9d139c81 JB |
438 | struct ieee80211_if_conf conf; |
439 | conf.bssid = conf.ssid = NULL; | |
440 | conf.ssid_len = 0; | |
441 | conf.changed = IEEE80211_IFCC_BEACON; | |
442 | rt2x00dev->ops->hw->config_interface(rt2x00dev->hw, vif, &conf); | |
6bb40dd1 ID |
443 | } |
444 | ||
72810379 | 445 | if (delayed_flags & DELAYED_CONFIG_ERP) |
980dfcb9 | 446 | rt2x00lib_config_erp(rt2x00dev, intf, &conf); |
a2e1d52a ID |
447 | |
448 | if (delayed_flags & DELAYED_LED_ASSOC) | |
449 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 450 | } |
5c58ee51 | 451 | |
6bb40dd1 ID |
452 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
453 | { | |
454 | struct rt2x00_dev *rt2x00dev = | |
455 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
456 | |
457 | /* | |
6bb40dd1 ID |
458 | * Iterate over each interface and perform the |
459 | * requested configurations. | |
471b3efd | 460 | */ |
6bb40dd1 ID |
461 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
462 | rt2x00lib_intf_scheduled_iter, | |
463 | rt2x00dev); | |
5c58ee51 ID |
464 | } |
465 | ||
95ea3627 ID |
466 | /* |
467 | * Interrupt context handlers. | |
468 | */ | |
6bb40dd1 ID |
469 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
470 | struct ieee80211_vif *vif) | |
95ea3627 | 471 | { |
c4da0048 | 472 | struct rt2x00_dev *rt2x00dev = data; |
6bb40dd1 | 473 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 474 | |
6bb40dd1 ID |
475 | if (vif->type != IEEE80211_IF_TYPE_AP && |
476 | vif->type != IEEE80211_IF_TYPE_IBSS) | |
95ea3627 ID |
477 | return; |
478 | ||
c95edf54 GW |
479 | /* |
480 | * Clean up the beacon skb. | |
481 | */ | |
c4da0048 | 482 | rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb); |
c95edf54 GW |
483 | intf->beacon->skb = NULL; |
484 | ||
6bb40dd1 ID |
485 | spin_lock(&intf->lock); |
486 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
487 | spin_unlock(&intf->lock); | |
95ea3627 ID |
488 | } |
489 | ||
490 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
491 | { | |
492 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
493 | return; | |
494 | ||
633257d3 ID |
495 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
496 | rt2x00lib_beacondone_iter, | |
497 | rt2x00dev); | |
6bb40dd1 | 498 | |
8e260c22 | 499 | schedule_work(&rt2x00dev->intf_work); |
95ea3627 ID |
500 | } |
501 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
502 | ||
181d6902 ID |
503 | void rt2x00lib_txdone(struct queue_entry *entry, |
504 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 505 | { |
181d6902 | 506 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 507 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
d74f5ba4 ID |
508 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
509 | ||
510 | /* | |
511 | * Unmap the skb. | |
512 | */ | |
513 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a JB |
514 | |
515 | /* | |
516 | * Send frame to debugfs immediately, after this call is completed | |
517 | * we are going to overwrite the skb->cb array. | |
518 | */ | |
519 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
520 | |
521 | /* | |
522 | * Update TX statistics. | |
523 | */ | |
fb55f4d1 ID |
524 | rt2x00dev->link.qual.tx_success += |
525 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
526 | rt2x00dev->link.qual.tx_failed += | |
cb14cb79 | 527 | test_bit(TXDONE_FAILURE, &txdesc->flags); |
95ea3627 | 528 | |
181d6902 ID |
529 | /* |
530 | * Initialize TX status | |
531 | */ | |
e039fa4a JB |
532 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
533 | tx_info->status.ack_signal = 0; | |
534 | tx_info->status.excessive_retries = | |
fb55f4d1 | 535 | test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags); |
e039fa4a | 536 | tx_info->status.retry_count = txdesc->retry; |
181d6902 | 537 | |
e039fa4a | 538 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
fb55f4d1 | 539 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
e039fa4a | 540 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
fb55f4d1 | 541 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 542 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
543 | } |
544 | ||
e039fa4a | 545 | if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) { |
fb55f4d1 | 546 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 547 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 548 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 549 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
550 | } |
551 | ||
552 | /* | |
e039fa4a JB |
553 | * Only send the status report to mac80211 when TX status was |
554 | * requested by it. If this was a extra frame coming through | |
555 | * a mac80211 library call (RTS/CTS) then we should not send the | |
556 | * status report back. | |
95ea3627 | 557 | */ |
e039fa4a JB |
558 | if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) |
559 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
baf26a7e | 560 | else |
fb55f4d1 | 561 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
562 | |
563 | /* | |
564 | * Make this entry available for reuse. | |
565 | */ | |
95ea3627 | 566 | entry->skb = NULL; |
d74f5ba4 ID |
567 | entry->flags = 0; |
568 | ||
569 | rt2x00dev->ops->lib->init_txentry(rt2x00dev, entry); | |
570 | ||
571 | __clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); | |
572 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); | |
573 | ||
574 | /* | |
575 | * If the data queue was below the threshold before the txdone | |
576 | * handler we must make sure the packet queue in the mac80211 stack | |
577 | * is reenabled when the txdone handler has finished. | |
578 | */ | |
579 | if (!rt2x00queue_threshold(entry->queue)) | |
580 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
581 | } |
582 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
583 | ||
c4da0048 GW |
584 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
585 | struct queue_entry *entry) | |
95ea3627 | 586 | { |
c4da0048 GW |
587 | struct rxdone_entry_desc rxdesc; |
588 | struct sk_buff *skb; | |
95ea3627 | 589 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 590 | struct ieee80211_supported_band *sband; |
61af43c5 | 591 | struct ieee80211_hdr *hdr; |
70e2fed4 | 592 | const struct rt2x00_rate *rate; |
c4da0048 | 593 | unsigned int header_size; |
239c249d | 594 | unsigned int align; |
95ea3627 | 595 | unsigned int i; |
70e2fed4 | 596 | int idx = -1; |
95ea3627 | 597 | |
c4da0048 GW |
598 | /* |
599 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
600 | * received frame and reuse the existing buffer. | |
601 | */ | |
602 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
603 | if (!skb) | |
604 | return; | |
605 | ||
606 | /* | |
607 | * Unmap the skb. | |
608 | */ | |
609 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
610 | ||
611 | /* | |
612 | * Extract the RXD details. | |
613 | */ | |
614 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
615 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 616 | |
239c249d GW |
617 | /* |
618 | * The data behind the ieee80211 header must be | |
a9f853dd | 619 | * aligned on a 4 byte boundary. |
239c249d | 620 | */ |
c4da0048 | 621 | header_size = ieee80211_get_hdrlen_from_skb(entry->skb); |
a9f853dd | 622 | align = ((unsigned long)(entry->skb->data + header_size)) & 3; |
239c249d GW |
623 | |
624 | if (align) { | |
625 | skb_push(entry->skb, align); | |
626 | /* Move entire frame in 1 command */ | |
627 | memmove(entry->skb->data, entry->skb->data + align, | |
c4da0048 | 628 | rxdesc.size); |
239c249d GW |
629 | } |
630 | ||
631 | /* Update data pointers, trim buffer to correct size */ | |
c4da0048 | 632 | skb_trim(entry->skb, rxdesc.size); |
239c249d | 633 | |
95ea3627 ID |
634 | /* |
635 | * Update RX statistics. | |
636 | */ | |
8318d78a JB |
637 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
638 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 639 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 640 | |
c4da0048 GW |
641 | if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && |
642 | (rate->plcp == rxdesc.signal)) || | |
643 | (!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && | |
644 | (rate->bitrate == rxdesc.signal))) { | |
8318d78a | 645 | idx = i; |
95ea3627 ID |
646 | break; |
647 | } | |
648 | } | |
649 | ||
866a0503 ID |
650 | if (idx < 0) { |
651 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
c4da0048 GW |
652 | "signal=0x%.2x, plcp=%d.\n", rxdesc.signal, |
653 | !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP)); | |
866a0503 ID |
654 | idx = 0; |
655 | } | |
656 | ||
61af43c5 | 657 | /* |
7e56d38d | 658 | * Only update link status if this is a beacon frame carrying our bssid. |
61af43c5 | 659 | */ |
70e2fed4 | 660 | hdr = (struct ieee80211_hdr *)entry->skb->data; |
ac104462 | 661 | if (ieee80211_is_beacon(hdr->frame_control) && |
c4da0048 GW |
662 | (rxdesc.dev_flags & RXDONE_MY_BSS)) |
663 | rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc.rssi); | |
61af43c5 | 664 | |
ebcf26da | 665 | rt2x00dev->link.qual.rx_success++; |
69f81a2c | 666 | |
ae73e58e | 667 | rx_status->mactime = rxdesc.timestamp; |
8318d78a | 668 | rx_status->rate_idx = idx; |
566bfe5a | 669 | rx_status->qual = |
c4da0048 GW |
670 | rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc.rssi); |
671 | rx_status->signal = rxdesc.rssi; | |
672 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 673 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
674 | |
675 | /* | |
181d6902 ID |
676 | * Send frame to mac80211 & debugfs. |
677 | * mac80211 will clean up the skb structure. | |
95ea3627 | 678 | */ |
5a6e5999 | 679 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 | 680 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
c4da0048 GW |
681 | |
682 | /* | |
683 | * Replace the skb with the freshly allocated one. | |
684 | */ | |
685 | entry->skb = skb; | |
d74f5ba4 ID |
686 | entry->flags = 0; |
687 | ||
688 | rt2x00dev->ops->lib->init_rxentry(rt2x00dev, entry); | |
689 | ||
690 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
691 | } |
692 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
693 | ||
95ea3627 ID |
694 | /* |
695 | * Driver initialization handlers. | |
696 | */ | |
70e2fed4 ID |
697 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
698 | { | |
aa776721 | 699 | .flags = DEV_RATE_CCK | DEV_RATE_BASIC, |
70e2fed4 | 700 | .bitrate = 10, |
aa776721 | 701 | .ratemask = BIT(0), |
70e2fed4 ID |
702 | .plcp = 0x00, |
703 | }, | |
704 | { | |
aa776721 | 705 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 706 | .bitrate = 20, |
aa776721 | 707 | .ratemask = BIT(1), |
70e2fed4 ID |
708 | .plcp = 0x01, |
709 | }, | |
710 | { | |
aa776721 | 711 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 712 | .bitrate = 55, |
aa776721 | 713 | .ratemask = BIT(2), |
70e2fed4 ID |
714 | .plcp = 0x02, |
715 | }, | |
716 | { | |
aa776721 | 717 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC, |
70e2fed4 | 718 | .bitrate = 110, |
aa776721 | 719 | .ratemask = BIT(3), |
70e2fed4 ID |
720 | .plcp = 0x03, |
721 | }, | |
722 | { | |
aa776721 | 723 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 724 | .bitrate = 60, |
aa776721 | 725 | .ratemask = BIT(4), |
70e2fed4 ID |
726 | .plcp = 0x0b, |
727 | }, | |
728 | { | |
729 | .flags = DEV_RATE_OFDM, | |
730 | .bitrate = 90, | |
aa776721 | 731 | .ratemask = BIT(5), |
70e2fed4 ID |
732 | .plcp = 0x0f, |
733 | }, | |
734 | { | |
aa776721 | 735 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 736 | .bitrate = 120, |
aa776721 | 737 | .ratemask = BIT(6), |
70e2fed4 ID |
738 | .plcp = 0x0a, |
739 | }, | |
740 | { | |
741 | .flags = DEV_RATE_OFDM, | |
742 | .bitrate = 180, | |
aa776721 | 743 | .ratemask = BIT(7), |
70e2fed4 ID |
744 | .plcp = 0x0e, |
745 | }, | |
746 | { | |
aa776721 | 747 | .flags = DEV_RATE_OFDM | DEV_RATE_BASIC, |
70e2fed4 | 748 | .bitrate = 240, |
aa776721 | 749 | .ratemask = BIT(8), |
70e2fed4 ID |
750 | .plcp = 0x09, |
751 | }, | |
752 | { | |
753 | .flags = DEV_RATE_OFDM, | |
754 | .bitrate = 360, | |
aa776721 | 755 | .ratemask = BIT(9), |
70e2fed4 ID |
756 | .plcp = 0x0d, |
757 | }, | |
758 | { | |
759 | .flags = DEV_RATE_OFDM, | |
760 | .bitrate = 480, | |
aa776721 | 761 | .ratemask = BIT(10), |
70e2fed4 ID |
762 | .plcp = 0x08, |
763 | }, | |
764 | { | |
765 | .flags = DEV_RATE_OFDM, | |
766 | .bitrate = 540, | |
aa776721 | 767 | .ratemask = BIT(11), |
70e2fed4 ID |
768 | .plcp = 0x0c, |
769 | }, | |
770 | }; | |
771 | ||
95ea3627 ID |
772 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
773 | const int channel, const int tx_power, | |
774 | const int value) | |
775 | { | |
f2a3c7f5 | 776 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
777 | entry->hw_value = value; |
778 | entry->max_power = tx_power; | |
779 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
780 | } |
781 | ||
782 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 783 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 784 | { |
70e2fed4 ID |
785 | entry->flags = 0; |
786 | entry->bitrate = rate->bitrate; | |
787 | entry->hw_value = rt2x00_create_rate_hw_value(index, 0); | |
8318d78a | 788 | entry->hw_value_short = entry->hw_value; |
70e2fed4 ID |
789 | |
790 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) { | |
791 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; | |
792 | entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1); | |
793 | } | |
95ea3627 ID |
794 | } |
795 | ||
796 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
797 | struct hw_mode_spec *spec) | |
798 | { | |
799 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
800 | struct ieee80211_channel *channels; |
801 | struct ieee80211_rate *rates; | |
31562e80 | 802 | unsigned int num_rates; |
95ea3627 ID |
803 | unsigned int i; |
804 | unsigned char tx_power; | |
805 | ||
31562e80 ID |
806 | num_rates = 0; |
807 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
808 | num_rates += 4; | |
809 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
810 | num_rates += 8; | |
95ea3627 ID |
811 | |
812 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
813 | if (!channels) | |
8318d78a | 814 | return -ENOMEM; |
95ea3627 | 815 | |
31562e80 | 816 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
817 | if (!rates) |
818 | goto exit_free_channels; | |
819 | ||
820 | /* | |
821 | * Initialize Rate list. | |
822 | */ | |
31562e80 | 823 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 824 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
825 | |
826 | /* | |
827 | * Initialize Channel list. | |
828 | */ | |
829 | for (i = 0; i < spec->num_channels; i++) { | |
31562e80 ID |
830 | if (spec->channels[i].channel <= 14) { |
831 | if (spec->tx_power_bg) | |
832 | tx_power = spec->tx_power_bg[i]; | |
833 | else | |
834 | tx_power = spec->tx_power_default; | |
835 | } else { | |
836 | if (spec->tx_power_a) | |
837 | tx_power = spec->tx_power_a[i]; | |
838 | else | |
839 | tx_power = spec->tx_power_default; | |
840 | } | |
95ea3627 ID |
841 | |
842 | rt2x00lib_channel(&channels[i], | |
843 | spec->channels[i].channel, tx_power, i); | |
844 | } | |
845 | ||
846 | /* | |
31562e80 | 847 | * Intitialize 802.11b, 802.11g |
95ea3627 | 848 | * Rates: CCK, OFDM. |
8318d78a | 849 | * Channels: 2.4 GHz |
95ea3627 | 850 | */ |
47ac2683 | 851 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
852 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
853 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
854 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
855 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
856 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
857 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
858 | } |
859 | ||
860 | /* | |
861 | * Intitialize 802.11a | |
862 | * Rates: OFDM. | |
863 | * Channels: OFDM, UNII, HiperLAN2. | |
864 | */ | |
47ac2683 | 865 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
866 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
867 | spec->num_channels - 14; | |
868 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
869 | num_rates - 4; | |
870 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
871 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
872 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
873 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
874 | } |
875 | ||
95ea3627 ID |
876 | return 0; |
877 | ||
8318d78a | 878 | exit_free_channels: |
95ea3627 | 879 | kfree(channels); |
95ea3627 ID |
880 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
881 | return -ENOMEM; | |
882 | } | |
883 | ||
884 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
885 | { | |
066cb637 | 886 | if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
887 | ieee80211_unregister_hw(rt2x00dev->hw); |
888 | ||
8318d78a JB |
889 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
890 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
891 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
892 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
893 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 ID |
894 | } |
895 | } | |
896 | ||
897 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
898 | { | |
899 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
900 | int status; | |
901 | ||
902 | /* | |
903 | * Initialize HW modes. | |
904 | */ | |
905 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
906 | if (status) | |
907 | return status; | |
908 | ||
61448f88 GW |
909 | /* |
910 | * Initialize HW fields. | |
911 | */ | |
912 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
913 | ||
95ea3627 ID |
914 | /* |
915 | * Register HW. | |
916 | */ | |
917 | status = ieee80211_register_hw(rt2x00dev->hw); | |
918 | if (status) { | |
919 | rt2x00lib_remove_hw(rt2x00dev); | |
920 | return status; | |
921 | } | |
922 | ||
066cb637 | 923 | __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
924 | |
925 | return 0; | |
926 | } | |
927 | ||
928 | /* | |
929 | * Initialization/uninitialization handlers. | |
930 | */ | |
e37ea213 | 931 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
932 | { |
933 | if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
934 | return; | |
935 | ||
936 | /* | |
1682fe6d | 937 | * Unregister extra components. |
95ea3627 ID |
938 | */ |
939 | rt2x00rfkill_unregister(rt2x00dev); | |
940 | ||
941 | /* | |
942 | * Allow the HW to uninitialize. | |
943 | */ | |
944 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
945 | ||
946 | /* | |
181d6902 | 947 | * Free allocated queue entries. |
95ea3627 | 948 | */ |
181d6902 | 949 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
950 | } |
951 | ||
e37ea213 | 952 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
953 | { |
954 | int status; | |
955 | ||
956 | if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags)) | |
957 | return 0; | |
958 | ||
959 | /* | |
181d6902 | 960 | * Allocate all queue entries. |
95ea3627 | 961 | */ |
181d6902 ID |
962 | status = rt2x00queue_initialize(rt2x00dev); |
963 | if (status) | |
95ea3627 | 964 | return status; |
95ea3627 ID |
965 | |
966 | /* | |
967 | * Initialize the device. | |
968 | */ | |
969 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
970 | if (status) { |
971 | rt2x00queue_uninitialize(rt2x00dev); | |
972 | return status; | |
973 | } | |
95ea3627 ID |
974 | |
975 | __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags); | |
976 | ||
977 | /* | |
1682fe6d | 978 | * Register the extra components. |
95ea3627 | 979 | */ |
1682fe6d | 980 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
981 | |
982 | return 0; | |
95ea3627 ID |
983 | } |
984 | ||
e37ea213 ID |
985 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
986 | { | |
987 | int retval; | |
988 | ||
989 | if (test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
990 | return 0; | |
991 | ||
992 | /* | |
993 | * If this is the first interface which is added, | |
994 | * we should load the firmware now. | |
995 | */ | |
9404ef34 ID |
996 | retval = rt2x00lib_load_firmware(rt2x00dev); |
997 | if (retval) | |
998 | return retval; | |
e37ea213 ID |
999 | |
1000 | /* | |
1001 | * Initialize the device. | |
1002 | */ | |
1003 | retval = rt2x00lib_initialize(rt2x00dev); | |
1004 | if (retval) | |
1005 | return retval; | |
1006 | ||
1007 | /* | |
1008 | * Enable radio. | |
1009 | */ | |
1010 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1011 | if (retval) { | |
1012 | rt2x00lib_uninitialize(rt2x00dev); | |
1013 | return retval; | |
1014 | } | |
1015 | ||
6bb40dd1 ID |
1016 | rt2x00dev->intf_ap_count = 0; |
1017 | rt2x00dev->intf_sta_count = 0; | |
1018 | rt2x00dev->intf_associated = 0; | |
1019 | ||
e37ea213 ID |
1020 | __set_bit(DEVICE_STARTED, &rt2x00dev->flags); |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1026 | { | |
1027 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1028 | return; | |
1029 | ||
1030 | /* | |
1031 | * Perhaps we can add something smarter here, | |
1032 | * but for now just disabling the radio should do. | |
1033 | */ | |
1034 | rt2x00lib_disable_radio(rt2x00dev); | |
1035 | ||
6bb40dd1 ID |
1036 | rt2x00dev->intf_ap_count = 0; |
1037 | rt2x00dev->intf_sta_count = 0; | |
1038 | rt2x00dev->intf_associated = 0; | |
1039 | ||
e37ea213 ID |
1040 | __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); |
1041 | } | |
1042 | ||
95ea3627 ID |
1043 | /* |
1044 | * driver allocation handlers. | |
1045 | */ | |
95ea3627 ID |
1046 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1047 | { | |
1048 | int retval = -ENOMEM; | |
1049 | ||
6bb40dd1 ID |
1050 | /* |
1051 | * Make room for rt2x00_intf inside the per-interface | |
1052 | * structure ieee80211_vif. | |
1053 | */ | |
1054 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1055 | ||
95ea3627 ID |
1056 | /* |
1057 | * Let the driver probe the device to detect the capabilities. | |
1058 | */ | |
1059 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1060 | if (retval) { | |
1061 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1062 | goto exit; | |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * Initialize configuration work. | |
1067 | */ | |
6bb40dd1 | 1068 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 1069 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 ID |
1070 | INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner); |
1071 | ||
95ea3627 | 1072 | /* |
181d6902 | 1073 | * Allocate queue array. |
95ea3627 | 1074 | */ |
181d6902 | 1075 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1076 | if (retval) |
1077 | goto exit; | |
1078 | ||
1079 | /* | |
1080 | * Initialize ieee80211 structure. | |
1081 | */ | |
1082 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1083 | if (retval) { | |
1084 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1085 | goto exit; | |
1086 | } | |
1087 | ||
a9450b70 | 1088 | /* |
1682fe6d | 1089 | * Register extra components. |
a9450b70 ID |
1090 | */ |
1091 | rt2x00leds_register(rt2x00dev); | |
1682fe6d | 1092 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
1093 | rt2x00debug_register(rt2x00dev); |
1094 | ||
066cb637 ID |
1095 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1096 | ||
95ea3627 ID |
1097 | return 0; |
1098 | ||
1099 | exit: | |
1100 | rt2x00lib_remove_dev(rt2x00dev); | |
1101 | ||
1102 | return retval; | |
1103 | } | |
1104 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1105 | ||
1106 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1107 | { | |
066cb637 ID |
1108 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1109 | ||
95ea3627 ID |
1110 | /* |
1111 | * Disable radio. | |
1112 | */ | |
1113 | rt2x00lib_disable_radio(rt2x00dev); | |
1114 | ||
1115 | /* | |
1116 | * Uninitialize device. | |
1117 | */ | |
1118 | rt2x00lib_uninitialize(rt2x00dev); | |
1119 | ||
1120 | /* | |
1682fe6d | 1121 | * Free extra components |
95ea3627 ID |
1122 | */ |
1123 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 1124 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
1125 | rt2x00leds_unregister(rt2x00dev); |
1126 | ||
95ea3627 ID |
1127 | /* |
1128 | * Free ieee80211_hw memory. | |
1129 | */ | |
1130 | rt2x00lib_remove_hw(rt2x00dev); | |
1131 | ||
1132 | /* | |
1133 | * Free firmware image. | |
1134 | */ | |
1135 | rt2x00lib_free_firmware(rt2x00dev); | |
1136 | ||
1137 | /* | |
181d6902 | 1138 | * Free queue structures. |
95ea3627 | 1139 | */ |
181d6902 | 1140 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1141 | } |
1142 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1143 | ||
1144 | /* | |
1145 | * Device state handlers | |
1146 | */ | |
1147 | #ifdef CONFIG_PM | |
1148 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1149 | { | |
1150 | int retval; | |
1151 | ||
1152 | NOTICE(rt2x00dev, "Going to sleep.\n"); | |
066cb637 ID |
1153 | __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags); |
1154 | ||
1155 | /* | |
1156 | * Only continue if mac80211 has open interfaces. | |
1157 | */ | |
1158 | if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) | |
1159 | goto exit; | |
6d7f9877 | 1160 | __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags); |
95ea3627 ID |
1161 | |
1162 | /* | |
1682fe6d | 1163 | * Disable radio. |
95ea3627 | 1164 | */ |
e37ea213 | 1165 | rt2x00lib_stop(rt2x00dev); |
95ea3627 | 1166 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1167 | |
1168 | /* | |
1169 | * Suspend/disable extra components. | |
1170 | */ | |
a9450b70 | 1171 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1172 | rt2x00debug_deregister(rt2x00dev); |
1173 | ||
066cb637 | 1174 | exit: |
95ea3627 | 1175 | /* |
9896322a ID |
1176 | * Set device mode to sleep for power management, |
1177 | * on some hardware this call seems to consistently fail. | |
1178 | * From the specifications it is hard to tell why it fails, | |
1179 | * and if this is a "bad thing". | |
1180 | * Overall it is safe to just ignore the failure and | |
1181 | * continue suspending. The only downside is that the | |
1182 | * device will not be in optimal power save mode, but with | |
1183 | * the radio and the other components already disabled the | |
1184 | * device is as good as disabled. | |
95ea3627 ID |
1185 | */ |
1186 | retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP); | |
1187 | if (retval) | |
9896322a ID |
1188 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1189 | "continue suspending.\n"); | |
95ea3627 ID |
1190 | |
1191 | return 0; | |
1192 | } | |
1193 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1194 | ||
6bb40dd1 ID |
1195 | static void rt2x00lib_resume_intf(void *data, u8 *mac, |
1196 | struct ieee80211_vif *vif) | |
1197 | { | |
1198 | struct rt2x00_dev *rt2x00dev = data; | |
1199 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
1200 | ||
1201 | spin_lock(&intf->lock); | |
1202 | ||
1203 | rt2x00lib_config_intf(rt2x00dev, intf, | |
1204 | vif->type, intf->mac, intf->bssid); | |
1205 | ||
1206 | ||
1207 | /* | |
1208 | * Master or Ad-hoc mode require a new beacon update. | |
1209 | */ | |
1210 | if (vif->type == IEEE80211_IF_TYPE_AP || | |
1211 | vif->type == IEEE80211_IF_TYPE_IBSS) | |
1212 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
1213 | ||
1214 | spin_unlock(&intf->lock); | |
1215 | } | |
1216 | ||
95ea3627 ID |
1217 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
1218 | { | |
95ea3627 ID |
1219 | int retval; |
1220 | ||
1221 | NOTICE(rt2x00dev, "Waking up.\n"); | |
95ea3627 ID |
1222 | |
1223 | /* | |
1682fe6d | 1224 | * Restore/enable extra components. |
95ea3627 ID |
1225 | */ |
1226 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1227 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1228 | |
066cb637 | 1229 | /* |
6d7f9877 | 1230 | * Only continue if mac80211 had open interfaces. |
066cb637 | 1231 | */ |
6d7f9877 | 1232 | if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags)) |
066cb637 ID |
1233 | return 0; |
1234 | ||
95ea3627 ID |
1235 | /* |
1236 | * Reinitialize device and all active interfaces. | |
1237 | */ | |
e37ea213 | 1238 | retval = rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
1239 | if (retval) |
1240 | goto exit; | |
1241 | ||
1242 | /* | |
1243 | * Reconfigure device. | |
1244 | */ | |
066cb637 ID |
1245 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1); |
1246 | if (!rt2x00dev->hw->conf.radio_enabled) | |
1247 | rt2x00lib_disable_radio(rt2x00dev); | |
95ea3627 | 1248 | |
6bb40dd1 ID |
1249 | /* |
1250 | * Iterator over each active interface to | |
1251 | * reconfigure the hardware. | |
1252 | */ | |
1253 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
1254 | rt2x00lib_resume_intf, rt2x00dev); | |
95ea3627 | 1255 | |
e37ea213 ID |
1256 | /* |
1257 | * We are ready again to receive requests from mac80211. | |
1258 | */ | |
1259 | __set_bit(DEVICE_PRESENT, &rt2x00dev->flags); | |
1260 | ||
066cb637 ID |
1261 | /* |
1262 | * It is possible that during that mac80211 has attempted | |
1263 | * to send frames while we were suspending or resuming. | |
1264 | * In that case we have disabled the TX queue and should | |
1265 | * now enable it again | |
1266 | */ | |
36d6825b | 1267 | ieee80211_wake_queues(rt2x00dev->hw); |
066cb637 | 1268 | |
95ea3627 | 1269 | /* |
6bb40dd1 ID |
1270 | * During interface iteration we might have changed the |
1271 | * delayed_flags, time to handles the event by calling | |
1272 | * the work handler directly. | |
95ea3627 | 1273 | */ |
6bb40dd1 | 1274 | rt2x00lib_intf_scheduled(&rt2x00dev->intf_work); |
95ea3627 | 1275 | |
95ea3627 ID |
1276 | return 0; |
1277 | ||
1278 | exit: | |
1279 | rt2x00lib_disable_radio(rt2x00dev); | |
1280 | rt2x00lib_uninitialize(rt2x00dev); | |
1281 | rt2x00debug_deregister(rt2x00dev); | |
1282 | ||
95ea3627 ID |
1283 | return retval; |
1284 | } | |
1285 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1286 | #endif /* CONFIG_PM */ | |
1287 | ||
1288 | /* | |
1289 | * rt2x00lib module information. | |
1290 | */ | |
1291 | MODULE_AUTHOR(DRV_PROJECT); | |
1292 | MODULE_VERSION(DRV_VERSION); | |
1293 | MODULE_DESCRIPTION("rt2x00 library"); | |
1294 | MODULE_LICENSE("GPL"); |