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95ea3627 | 1 | /* |
7e613e16 ID |
2 | Copyright (C) 2010 Willow Garage <http://www.willowgarage.com> |
3 | Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com> | |
95ea3627 ID |
4 | <http://rt2x00.serialmonkey.com> |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the | |
18 | Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | /* | |
23 | Module: rt2x00lib | |
24 | Abstract: rt2x00 generic device routines. | |
25 | */ | |
26 | ||
95ea3627 ID |
27 | #include <linux/kernel.h> |
28 | #include <linux/module.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
95ea3627 ID |
30 | |
31 | #include "rt2x00.h" | |
32 | #include "rt2x00lib.h" | |
33 | ||
95ea3627 ID |
34 | /* |
35 | * Radio control handlers. | |
36 | */ | |
37 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
38 | { | |
39 | int status; | |
40 | ||
41 | /* | |
42 | * Don't enable the radio twice. | |
43 | * And check if the hardware button has been disabled. | |
44 | */ | |
4b9631a4 | 45 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
46 | return 0; |
47 | ||
837e7f24 | 48 | /* |
181d6902 | 49 | * Initialize all data queues. |
837e7f24 | 50 | */ |
798b7adb | 51 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 52 | |
95ea3627 ID |
53 | /* |
54 | * Enable radio. | |
55 | */ | |
a2e1d52a ID |
56 | status = |
57 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
58 | if (status) |
59 | return status; | |
60 | ||
2b08da3f ID |
61 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
62 | ||
a2e1d52a | 63 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 64 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 65 | |
0262ab0d | 66 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
67 | |
68 | /* | |
69 | * Enable RX. | |
70 | */ | |
5cbf830e | 71 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 | 72 | |
c965c74b ID |
73 | /* |
74 | * Start watchdog monitoring. | |
75 | */ | |
76 | rt2x00link_start_watchdog(rt2x00dev); | |
77 | ||
95ea3627 ID |
78 | /* |
79 | * Start the TX queues. | |
80 | */ | |
36d6825b | 81 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
82 | |
83 | return 0; | |
84 | } | |
85 | ||
86 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
87 | { | |
0262ab0d | 88 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
89 | return; |
90 | ||
95ea3627 | 91 | /* |
a2c9b652 | 92 | * Stop the TX queues in mac80211. |
95ea3627 ID |
93 | */ |
94 | ieee80211_stop_queues(rt2x00dev->hw); | |
a2c9b652 | 95 | rt2x00queue_stop_queues(rt2x00dev); |
95ea3627 | 96 | |
c965c74b ID |
97 | /* |
98 | * Stop watchdog monitoring. | |
99 | */ | |
100 | rt2x00link_stop_watchdog(rt2x00dev); | |
101 | ||
95ea3627 ID |
102 | /* |
103 | * Disable RX. | |
104 | */ | |
5cbf830e | 105 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
106 | |
107 | /* | |
108 | * Disable radio. | |
109 | */ | |
110 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 111 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 112 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 113 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
114 | } |
115 | ||
5cbf830e | 116 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 117 | { |
95ea3627 ID |
118 | /* |
119 | * When we are disabling the RX, we should also stop the link tuner. | |
120 | */ | |
5cbf830e | 121 | if (state == STATE_RADIO_RX_OFF) |
84e3196f | 122 | rt2x00link_stop_tuner(rt2x00dev); |
95ea3627 ID |
123 | |
124 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
125 | ||
126 | /* | |
127 | * When we are enabling the RX, we should also start the link tuner. | |
128 | */ | |
84e3196f ID |
129 | if (state == STATE_RADIO_RX_ON) |
130 | rt2x00link_start_tuner(rt2x00dev); | |
95ea3627 ID |
131 | } |
132 | ||
6bb40dd1 ID |
133 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
134 | struct ieee80211_vif *vif) | |
5c58ee51 | 135 | { |
6bb40dd1 ID |
136 | struct rt2x00_dev *rt2x00dev = data; |
137 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
138 | int delayed_flags; |
139 | ||
140 | /* | |
141 | * Copy all data we need during this action under the protection | |
142 | * of a spinlock. Otherwise race conditions might occur which results | |
143 | * into an invalid configuration. | |
144 | */ | |
145 | spin_lock(&intf->lock); | |
146 | ||
6bb40dd1 ID |
147 | delayed_flags = intf->delayed_flags; |
148 | intf->delayed_flags = 0; | |
149 | ||
150 | spin_unlock(&intf->lock); | |
151 | ||
980dfcb9 ID |
152 | /* |
153 | * It is possible the radio was disabled while the work had been | |
154 | * scheduled. If that happens we should return here immediately, | |
155 | * note that in the spinlock protected area above the delayed_flags | |
156 | * have been cleared correctly. | |
157 | */ | |
0262ab0d | 158 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
159 | return; |
160 | ||
bd88a781 | 161 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
a2c9b652 | 162 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
6bb40dd1 | 163 | } |
5c58ee51 | 164 | |
6bb40dd1 ID |
165 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
166 | { | |
167 | struct rt2x00_dev *rt2x00dev = | |
168 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
169 | |
170 | /* | |
6bb40dd1 ID |
171 | * Iterate over each interface and perform the |
172 | * requested configurations. | |
471b3efd | 173 | */ |
6bb40dd1 ID |
174 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
175 | rt2x00lib_intf_scheduled_iter, | |
176 | rt2x00dev); | |
5c58ee51 ID |
177 | } |
178 | ||
95ea3627 ID |
179 | /* |
180 | * Interrupt context handlers. | |
181 | */ | |
07896fe2 HS |
182 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
183 | struct ieee80211_vif *vif) | |
184 | { | |
185 | struct rt2x00_dev *rt2x00dev = data; | |
186 | struct sk_buff *skb; | |
187 | ||
188 | /* | |
189 | * Only AP mode interfaces do broad- and multicast buffering | |
190 | */ | |
191 | if (vif->type != NL80211_IFTYPE_AP) | |
192 | return; | |
193 | ||
194 | /* | |
195 | * Send out buffered broad- and multicast frames | |
196 | */ | |
197 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
198 | while (skb) { | |
199 | rt2x00mac_tx(rt2x00dev->hw, skb); | |
200 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
201 | } | |
202 | } | |
203 | ||
9f926fb5 HS |
204 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
205 | struct ieee80211_vif *vif) | |
95ea3627 | 206 | { |
4dee32f5 | 207 | struct rt2x00_dev *rt2x00dev = data; |
95ea3627 | 208 | |
05c914fe | 209 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 210 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
211 | vif->type != NL80211_IFTYPE_MESH_POINT && |
212 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
213 | return; |
214 | ||
4dee32f5 | 215 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
95ea3627 ID |
216 | } |
217 | ||
218 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
219 | { | |
0262ab0d | 220 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
221 | return; |
222 | ||
07896fe2 | 223 | /* send buffered bc/mc frames out for every bssid */ |
4dee32f5 | 224 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
07896fe2 HS |
225 | rt2x00lib_bc_buffer_iter, |
226 | rt2x00dev); | |
9f926fb5 HS |
227 | /* |
228 | * Devices with pre tbtt interrupt don't need to update the beacon | |
229 | * here as they will fetch the next beacon directly prior to | |
230 | * transmission. | |
231 | */ | |
232 | if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags)) | |
233 | return; | |
07896fe2 HS |
234 | |
235 | /* fetch next beacon */ | |
236 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
9f926fb5 | 237 | rt2x00lib_beaconupdate_iter, |
07896fe2 | 238 | rt2x00dev); |
95ea3627 ID |
239 | } |
240 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
241 | ||
9f926fb5 HS |
242 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
243 | { | |
244 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
245 | return; | |
246 | ||
247 | /* fetch next beacon */ | |
248 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
249 | rt2x00lib_beaconupdate_iter, | |
250 | rt2x00dev); | |
251 | } | |
252 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); | |
253 | ||
181d6902 ID |
254 | void rt2x00lib_txdone(struct queue_entry *entry, |
255 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 256 | { |
181d6902 | 257 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 258 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 259 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 260 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
9f166171 | 261 | unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
92ed48e5 | 262 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 263 | u8 skbdesc_flags = skbdesc->flags; |
92ed48e5 | 264 | unsigned int i; |
2e27cff8 | 265 | bool success; |
d74f5ba4 | 266 | |
e513a0b6 GW |
267 | /* |
268 | * Unmap the skb. | |
269 | */ | |
270 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
271 | ||
272 | /* | |
273 | * Remove the extra tx headroom from the skb. | |
274 | */ | |
275 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); | |
276 | ||
277 | /* | |
278 | * Signal that the TX descriptor is no longer in the skb. | |
279 | */ | |
280 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
281 | ||
9f166171 ID |
282 | /* |
283 | * Remove L2 padding which was added during | |
284 | */ | |
285 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 286 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 287 | |
2bb057d0 ID |
288 | /* |
289 | * If the IV/EIV data was stripped from the frame before it was | |
290 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 291 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
292 | * frame as it was passed to us. |
293 | */ | |
294 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 295 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 296 | |
e039fa4a JB |
297 | /* |
298 | * Send frame to debugfs immediately, after this call is completed | |
299 | * we are going to overwrite the skb->cb array. | |
300 | */ | |
301 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
302 | |
303 | /* | |
2e27cff8 | 304 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 305 | */ |
2e27cff8 | 306 | success = |
ce4c45e0 | 307 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 308 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
309 | |
310 | /* | |
311 | * Update TX statistics. | |
312 | */ | |
313 | rt2x00dev->link.qual.tx_success += success; | |
314 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 315 | |
e6a9854b JB |
316 | rate_idx = skbdesc->tx_rate_idx; |
317 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
318 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
319 | (txdesc->retry + 1) : 1; | |
e6a9854b | 320 | |
181d6902 ID |
321 | /* |
322 | * Initialize TX status | |
323 | */ | |
e039fa4a JB |
324 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
325 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
326 | |
327 | /* | |
328 | * Frame was send with retries, hardware tried | |
329 | * different rates to send out the frame, at each | |
3d2bc103 HS |
330 | * retry it lowered the rate 1 step except when the |
331 | * lowest rate was used. | |
92ed48e5 BP |
332 | */ |
333 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
334 | tx_info->status.rates[i].idx = rate_idx - i; | |
335 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
336 | |
337 | if (rate_idx - i == 0) { | |
338 | /* | |
339 | * The lowest rate (index 0) was used until the | |
340 | * number of max retries was reached. | |
341 | */ | |
342 | tx_info->status.rates[i].count = retry_rates - i; | |
343 | i++; | |
344 | break; | |
345 | } | |
92ed48e5 BP |
346 | tx_info->status.rates[i].count = 1; |
347 | } | |
2e27cff8 | 348 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 349 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 350 | |
e039fa4a | 351 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 352 | if (success) |
e039fa4a | 353 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 354 | else |
181d6902 | 355 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
356 | } |
357 | ||
1df90809 HS |
358 | /* |
359 | * Every single frame has it's own tx status, hence report | |
360 | * every frame as ampdu of size 1. | |
361 | * | |
362 | * TODO: if we can find out how many frames were aggregated | |
363 | * by the hw we could provide the real ampdu_len to mac80211 | |
364 | * which would allow the rc algorithm to better decide on | |
365 | * which rates are suitable. | |
366 | */ | |
367 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
368 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; | |
369 | tx_info->status.ampdu_len = 1; | |
370 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
371 | } | |
372 | ||
e6a9854b | 373 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 374 | if (success) |
181d6902 | 375 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 376 | else |
181d6902 | 377 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
378 | } |
379 | ||
380 | /* | |
7351c6bd JB |
381 | * Only send the status report to mac80211 when it's a frame |
382 | * that originated in mac80211. If this was a extra frame coming | |
383 | * through a mac80211 library call (RTS/CTS) then we should not | |
384 | * send the status report back. | |
95ea3627 | 385 | */ |
7351c6bd | 386 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
7e613e16 | 387 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
baf26a7e | 388 | else |
78e256c9 | 389 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
390 | |
391 | /* | |
392 | * Make this entry available for reuse. | |
393 | */ | |
95ea3627 | 394 | entry->skb = NULL; |
d74f5ba4 ID |
395 | entry->flags = 0; |
396 | ||
798b7adb | 397 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 398 | |
d74f5ba4 ID |
399 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
400 | ||
401 | /* | |
402 | * If the data queue was below the threshold before the txdone | |
403 | * handler we must make sure the packet queue in the mac80211 stack | |
404 | * is reenabled when the txdone handler has finished. | |
405 | */ | |
406 | if (!rt2x00queue_threshold(entry->queue)) | |
407 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
408 | } |
409 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
3392bece ID |
410 | |
411 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) | |
412 | { | |
413 | struct txdone_entry_desc txdesc; | |
414 | ||
415 | txdesc.flags = 0; | |
416 | __set_bit(status, &txdesc.flags); | |
417 | txdesc.retry = 0; | |
418 | ||
419 | rt2x00lib_txdone(entry, &txdesc); | |
420 | } | |
421 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); | |
95ea3627 | 422 | |
35f00cfc ID |
423 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
424 | struct rxdone_entry_desc *rxdesc) | |
425 | { | |
426 | struct ieee80211_supported_band *sband; | |
427 | const struct rt2x00_rate *rate; | |
428 | unsigned int i; | |
429 | int signal; | |
430 | int type; | |
431 | ||
432 | /* | |
433 | * For non-HT rates the MCS value needs to contain the | |
434 | * actually used rate modulation (CCK or OFDM). | |
435 | */ | |
436 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
437 | signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); | |
438 | else | |
439 | signal = rxdesc->signal; | |
440 | ||
441 | type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
442 | ||
443 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
444 | for (i = 0; i < sband->n_bitrates; i++) { | |
445 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
446 | ||
447 | if (((type == RXDONE_SIGNAL_PLCP) && | |
448 | (rate->plcp == signal)) || | |
449 | ((type == RXDONE_SIGNAL_BITRATE) && | |
450 | (rate->bitrate == signal)) || | |
451 | ((type == RXDONE_SIGNAL_MCS) && | |
452 | (rate->mcs == signal))) { | |
453 | return i; | |
454 | } | |
455 | } | |
456 | ||
457 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
458 | "signal=0x%.4x, type=%d.\n", signal, type); | |
459 | return 0; | |
460 | } | |
461 | ||
c4da0048 GW |
462 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
463 | struct queue_entry *entry) | |
95ea3627 | 464 | { |
c4da0048 GW |
465 | struct rxdone_entry_desc rxdesc; |
466 | struct sk_buff *skb; | |
e5ef5bad | 467 | struct ieee80211_rx_status *rx_status; |
2bb057d0 | 468 | unsigned int header_length; |
35f00cfc | 469 | int rate_idx; |
7e613e16 ID |
470 | |
471 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) | |
472 | goto submit_entry; | |
473 | ||
c4da0048 GW |
474 | /* |
475 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
476 | * received frame and reuse the existing buffer. | |
477 | */ | |
478 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
479 | if (!skb) | |
480 | return; | |
481 | ||
482 | /* | |
483 | * Unmap the skb. | |
484 | */ | |
485 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
486 | ||
487 | /* | |
488 | * Extract the RXD details. | |
489 | */ | |
490 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
491 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 492 | |
239c249d GW |
493 | /* |
494 | * The data behind the ieee80211 header must be | |
a9f853dd | 495 | * aligned on a 4 byte boundary. |
239c249d | 496 | */ |
2bb057d0 | 497 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 498 | |
2bb057d0 ID |
499 | /* |
500 | * Hardware might have stripped the IV/EIV/ICV data, | |
501 | * in that case it is possible that the data was | |
3ad2f3fb | 502 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
503 | * in which case we should reinsert the data into the frame. |
504 | */ | |
74415edb | 505 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 506 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 507 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 508 | &rxdesc); |
b7340833 GW |
509 | else if (header_length && |
510 | (rxdesc.size > header_length) && | |
511 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 512 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 513 | else |
daee6c09 | 514 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 515 | |
1398d458 AB |
516 | /* Trim buffer to correct size */ |
517 | skb_trim(entry->skb, rxdesc.size); | |
518 | ||
95ea3627 | 519 | /* |
35f00cfc ID |
520 | * Check if the frame was received using HT. In that case, |
521 | * the rate is the MCS index and should be passed to mac80211 | |
522 | * directly. Otherwise we need to translate the signal to | |
523 | * the correct bitrate index. | |
95ea3627 | 524 | */ |
35f00cfc ID |
525 | if (rxdesc.rate_mode == RATE_MODE_CCK || |
526 | rxdesc.rate_mode == RATE_MODE_OFDM) { | |
527 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); | |
528 | } else { | |
529 | rxdesc.flags |= RX_FLAG_HT; | |
530 | rate_idx = rxdesc.signal; | |
866a0503 ID |
531 | } |
532 | ||
61af43c5 | 533 | /* |
84e3196f | 534 | * Update extra components |
61af43c5 | 535 | */ |
84e3196f ID |
536 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
537 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
e5ef5bad | 538 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
69f81a2c | 539 | |
e5ef5bad ID |
540 | /* |
541 | * Initialize RX status information, and send frame | |
542 | * to mac80211. | |
543 | */ | |
544 | rx_status = IEEE80211_SKB_RXCB(entry->skb); | |
ae73e58e | 545 | rx_status->mactime = rxdesc.timestamp; |
e5ef5bad ID |
546 | rx_status->band = rt2x00dev->curr_band; |
547 | rx_status->freq = rt2x00dev->curr_freq; | |
35f00cfc | 548 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
549 | rx_status->signal = rxdesc.rssi; |
550 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 551 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 | 552 | |
7e613e16 | 553 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
c4da0048 GW |
554 | |
555 | /* | |
556 | * Replace the skb with the freshly allocated one. | |
557 | */ | |
558 | entry->skb = skb; | |
d74f5ba4 | 559 | |
7e613e16 | 560 | submit_entry: |
798b7adb | 561 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 562 | rt2x00queue_index_inc(entry->queue, Q_INDEX); |
7e613e16 | 563 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
95ea3627 ID |
564 | } |
565 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
566 | ||
95ea3627 ID |
567 | /* |
568 | * Driver initialization handlers. | |
569 | */ | |
70e2fed4 ID |
570 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
571 | { | |
3d8606a6 | 572 | .flags = DEV_RATE_CCK, |
70e2fed4 | 573 | .bitrate = 10, |
aa776721 | 574 | .ratemask = BIT(0), |
70e2fed4 | 575 | .plcp = 0x00, |
35f00cfc | 576 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
577 | }, |
578 | { | |
3d8606a6 | 579 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 580 | .bitrate = 20, |
aa776721 | 581 | .ratemask = BIT(1), |
70e2fed4 | 582 | .plcp = 0x01, |
35f00cfc | 583 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
584 | }, |
585 | { | |
3d8606a6 | 586 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 587 | .bitrate = 55, |
aa776721 | 588 | .ratemask = BIT(2), |
70e2fed4 | 589 | .plcp = 0x02, |
35f00cfc | 590 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
591 | }, |
592 | { | |
3d8606a6 | 593 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 594 | .bitrate = 110, |
aa776721 | 595 | .ratemask = BIT(3), |
70e2fed4 | 596 | .plcp = 0x03, |
35f00cfc | 597 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
598 | }, |
599 | { | |
3d8606a6 | 600 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 601 | .bitrate = 60, |
aa776721 | 602 | .ratemask = BIT(4), |
70e2fed4 | 603 | .plcp = 0x0b, |
35f00cfc | 604 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
605 | }, |
606 | { | |
607 | .flags = DEV_RATE_OFDM, | |
608 | .bitrate = 90, | |
aa776721 | 609 | .ratemask = BIT(5), |
70e2fed4 | 610 | .plcp = 0x0f, |
35f00cfc | 611 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
612 | }, |
613 | { | |
3d8606a6 | 614 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 615 | .bitrate = 120, |
aa776721 | 616 | .ratemask = BIT(6), |
70e2fed4 | 617 | .plcp = 0x0a, |
35f00cfc | 618 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
619 | }, |
620 | { | |
621 | .flags = DEV_RATE_OFDM, | |
622 | .bitrate = 180, | |
aa776721 | 623 | .ratemask = BIT(7), |
70e2fed4 | 624 | .plcp = 0x0e, |
35f00cfc | 625 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
626 | }, |
627 | { | |
3d8606a6 | 628 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 629 | .bitrate = 240, |
aa776721 | 630 | .ratemask = BIT(8), |
70e2fed4 | 631 | .plcp = 0x09, |
35f00cfc | 632 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
633 | }, |
634 | { | |
635 | .flags = DEV_RATE_OFDM, | |
636 | .bitrate = 360, | |
aa776721 | 637 | .ratemask = BIT(9), |
70e2fed4 | 638 | .plcp = 0x0d, |
35f00cfc | 639 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
640 | }, |
641 | { | |
642 | .flags = DEV_RATE_OFDM, | |
643 | .bitrate = 480, | |
aa776721 | 644 | .ratemask = BIT(10), |
70e2fed4 | 645 | .plcp = 0x08, |
35f00cfc | 646 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
647 | }, |
648 | { | |
649 | .flags = DEV_RATE_OFDM, | |
650 | .bitrate = 540, | |
aa776721 | 651 | .ratemask = BIT(11), |
70e2fed4 | 652 | .plcp = 0x0c, |
35f00cfc | 653 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
654 | }, |
655 | }; | |
656 | ||
95ea3627 ID |
657 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
658 | const int channel, const int tx_power, | |
659 | const int value) | |
660 | { | |
f2a3c7f5 | 661 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
662 | entry->hw_value = value; |
663 | entry->max_power = tx_power; | |
664 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
665 | } |
666 | ||
667 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 668 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 669 | { |
70e2fed4 ID |
670 | entry->flags = 0; |
671 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
672 | entry->hw_value =index; |
673 | entry->hw_value_short = index; | |
70e2fed4 | 674 | |
3ea96463 | 675 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 676 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
677 | } |
678 | ||
679 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
680 | struct hw_mode_spec *spec) | |
681 | { | |
682 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
683 | struct ieee80211_channel *channels; |
684 | struct ieee80211_rate *rates; | |
31562e80 | 685 | unsigned int num_rates; |
95ea3627 | 686 | unsigned int i; |
95ea3627 | 687 | |
31562e80 ID |
688 | num_rates = 0; |
689 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
690 | num_rates += 4; | |
691 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
692 | num_rates += 8; | |
95ea3627 ID |
693 | |
694 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
695 | if (!channels) | |
8318d78a | 696 | return -ENOMEM; |
95ea3627 | 697 | |
31562e80 | 698 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
699 | if (!rates) |
700 | goto exit_free_channels; | |
701 | ||
702 | /* | |
703 | * Initialize Rate list. | |
704 | */ | |
31562e80 | 705 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 706 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
707 | |
708 | /* | |
709 | * Initialize Channel list. | |
710 | */ | |
711 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 712 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
713 | spec->channels[i].channel, |
714 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
715 | } |
716 | ||
717 | /* | |
31562e80 | 718 | * Intitialize 802.11b, 802.11g |
95ea3627 | 719 | * Rates: CCK, OFDM. |
8318d78a | 720 | * Channels: 2.4 GHz |
95ea3627 | 721 | */ |
47ac2683 | 722 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
723 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
724 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
725 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
726 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
727 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
728 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
729 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
730 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
731 | } |
732 | ||
733 | /* | |
734 | * Intitialize 802.11a | |
735 | * Rates: OFDM. | |
736 | * Channels: OFDM, UNII, HiperLAN2. | |
737 | */ | |
47ac2683 | 738 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
739 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
740 | spec->num_channels - 14; | |
741 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
742 | num_rates - 4; | |
743 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
744 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
745 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
746 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
747 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
748 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
749 | } |
750 | ||
95ea3627 ID |
751 | return 0; |
752 | ||
8318d78a | 753 | exit_free_channels: |
95ea3627 | 754 | kfree(channels); |
95ea3627 ID |
755 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
756 | return -ENOMEM; | |
757 | } | |
758 | ||
759 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
760 | { | |
0262ab0d | 761 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
762 | ieee80211_unregister_hw(rt2x00dev->hw); |
763 | ||
8318d78a JB |
764 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
765 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
766 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
767 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
768 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 769 | } |
8c5e7a5f ID |
770 | |
771 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
772 | } |
773 | ||
774 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
775 | { | |
776 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
777 | int status; | |
778 | ||
0262ab0d ID |
779 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
780 | return 0; | |
781 | ||
95ea3627 ID |
782 | /* |
783 | * Initialize HW modes. | |
784 | */ | |
785 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
786 | if (status) | |
787 | return status; | |
788 | ||
61448f88 GW |
789 | /* |
790 | * Initialize HW fields. | |
791 | */ | |
792 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
793 | ||
e6218cc4 GW |
794 | /* |
795 | * Initialize extra TX headroom required. | |
796 | */ | |
7a4a77b7 GW |
797 | rt2x00dev->hw->extra_tx_headroom = |
798 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
799 | rt2x00dev->ops->extra_tx_headroom); | |
800 | ||
801 | /* | |
802 | * Take TX headroom required for alignment into account. | |
803 | */ | |
804 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
805 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
806 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
807 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 808 | |
95ea3627 ID |
809 | /* |
810 | * Register HW. | |
811 | */ | |
812 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 813 | if (status) |
95ea3627 | 814 | return status; |
95ea3627 | 815 | |
0262ab0d | 816 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
817 | |
818 | return 0; | |
819 | } | |
820 | ||
821 | /* | |
822 | * Initialization/uninitialization handlers. | |
823 | */ | |
e37ea213 | 824 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 825 | { |
0262ab0d | 826 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
827 | return; |
828 | ||
829 | /* | |
1682fe6d | 830 | * Unregister extra components. |
95ea3627 ID |
831 | */ |
832 | rt2x00rfkill_unregister(rt2x00dev); | |
833 | ||
834 | /* | |
835 | * Allow the HW to uninitialize. | |
836 | */ | |
837 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
838 | ||
839 | /* | |
181d6902 | 840 | * Free allocated queue entries. |
95ea3627 | 841 | */ |
181d6902 | 842 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
843 | } |
844 | ||
e37ea213 | 845 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
846 | { |
847 | int status; | |
848 | ||
0262ab0d | 849 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
850 | return 0; |
851 | ||
852 | /* | |
181d6902 | 853 | * Allocate all queue entries. |
95ea3627 | 854 | */ |
181d6902 ID |
855 | status = rt2x00queue_initialize(rt2x00dev); |
856 | if (status) | |
95ea3627 | 857 | return status; |
95ea3627 ID |
858 | |
859 | /* | |
860 | * Initialize the device. | |
861 | */ | |
862 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
863 | if (status) { |
864 | rt2x00queue_uninitialize(rt2x00dev); | |
865 | return status; | |
866 | } | |
95ea3627 | 867 | |
0262ab0d | 868 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
869 | |
870 | /* | |
1682fe6d | 871 | * Register the extra components. |
95ea3627 | 872 | */ |
1682fe6d | 873 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
874 | |
875 | return 0; | |
95ea3627 ID |
876 | } |
877 | ||
e37ea213 ID |
878 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
879 | { | |
880 | int retval; | |
881 | ||
0262ab0d | 882 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
883 | return 0; |
884 | ||
885 | /* | |
886 | * If this is the first interface which is added, | |
887 | * we should load the firmware now. | |
888 | */ | |
9404ef34 ID |
889 | retval = rt2x00lib_load_firmware(rt2x00dev); |
890 | if (retval) | |
891 | return retval; | |
e37ea213 ID |
892 | |
893 | /* | |
894 | * Initialize the device. | |
895 | */ | |
896 | retval = rt2x00lib_initialize(rt2x00dev); | |
897 | if (retval) | |
898 | return retval; | |
899 | ||
6bb40dd1 ID |
900 | rt2x00dev->intf_ap_count = 0; |
901 | rt2x00dev->intf_sta_count = 0; | |
902 | rt2x00dev->intf_associated = 0; | |
903 | ||
bdfa500b ID |
904 | /* Enable the radio */ |
905 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
906 | if (retval) { | |
907 | rt2x00queue_uninitialize(rt2x00dev); | |
908 | return retval; | |
909 | } | |
910 | ||
0262ab0d | 911 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
912 | |
913 | return 0; | |
914 | } | |
915 | ||
916 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
917 | { | |
0262ab0d | 918 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
919 | return; |
920 | ||
921 | /* | |
922 | * Perhaps we can add something smarter here, | |
923 | * but for now just disabling the radio should do. | |
924 | */ | |
925 | rt2x00lib_disable_radio(rt2x00dev); | |
926 | ||
6bb40dd1 ID |
927 | rt2x00dev->intf_ap_count = 0; |
928 | rt2x00dev->intf_sta_count = 0; | |
929 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
930 | } |
931 | ||
95ea3627 ID |
932 | /* |
933 | * driver allocation handlers. | |
934 | */ | |
95ea3627 ID |
935 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
936 | { | |
937 | int retval = -ENOMEM; | |
938 | ||
8ff48a8b ID |
939 | mutex_init(&rt2x00dev->csr_mutex); |
940 | ||
66f84d65 SC |
941 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
942 | ||
6bb40dd1 ID |
943 | /* |
944 | * Make room for rt2x00_intf inside the per-interface | |
945 | * structure ieee80211_vif. | |
946 | */ | |
947 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
948 | ||
3514a441 ID |
949 | /* |
950 | * Determine which operating modes are supported, all modes | |
951 | * which require beaconing, depend on the availability of | |
952 | * beacon entries. | |
953 | */ | |
954 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
955 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
956 | rt2x00dev->hw->wiphy->interface_modes |= | |
957 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 958 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
959 | BIT(NL80211_IFTYPE_MESH_POINT) | |
960 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 961 | |
9acd56d3 SB |
962 | /* |
963 | * Initialize configuration work. | |
964 | */ | |
965 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); | |
966 | ||
95ea3627 ID |
967 | /* |
968 | * Let the driver probe the device to detect the capabilities. | |
969 | */ | |
970 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
971 | if (retval) { | |
972 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
973 | goto exit; | |
974 | } | |
975 | ||
95ea3627 | 976 | /* |
181d6902 | 977 | * Allocate queue array. |
95ea3627 | 978 | */ |
181d6902 | 979 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
980 | if (retval) |
981 | goto exit; | |
982 | ||
983 | /* | |
984 | * Initialize ieee80211 structure. | |
985 | */ | |
986 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
987 | if (retval) { | |
988 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
989 | goto exit; | |
990 | } | |
991 | ||
a9450b70 | 992 | /* |
1682fe6d | 993 | * Register extra components. |
a9450b70 | 994 | */ |
84e3196f | 995 | rt2x00link_register(rt2x00dev); |
a9450b70 | 996 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
997 | rt2x00debug_register(rt2x00dev); |
998 | ||
999 | return 0; | |
1000 | ||
1001 | exit: | |
1002 | rt2x00lib_remove_dev(rt2x00dev); | |
1003 | ||
1004 | return retval; | |
1005 | } | |
1006 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1007 | ||
1008 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1009 | { | |
0262ab0d | 1010 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1011 | |
95ea3627 ID |
1012 | /* |
1013 | * Disable radio. | |
1014 | */ | |
1015 | rt2x00lib_disable_radio(rt2x00dev); | |
1016 | ||
d8cc8926 PR |
1017 | /* |
1018 | * Stop all work. | |
1019 | */ | |
d8cc8926 | 1020 | cancel_work_sync(&rt2x00dev->intf_work); |
7e613e16 ID |
1021 | cancel_work_sync(&rt2x00dev->rxdone_work); |
1022 | cancel_work_sync(&rt2x00dev->txdone_work); | |
d8cc8926 | 1023 | |
95ea3627 ID |
1024 | /* |
1025 | * Uninitialize device. | |
1026 | */ | |
1027 | rt2x00lib_uninitialize(rt2x00dev); | |
1028 | ||
1029 | /* | |
1682fe6d | 1030 | * Free extra components |
95ea3627 ID |
1031 | */ |
1032 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
1033 | rt2x00leds_unregister(rt2x00dev); |
1034 | ||
95ea3627 ID |
1035 | /* |
1036 | * Free ieee80211_hw memory. | |
1037 | */ | |
1038 | rt2x00lib_remove_hw(rt2x00dev); | |
1039 | ||
1040 | /* | |
1041 | * Free firmware image. | |
1042 | */ | |
1043 | rt2x00lib_free_firmware(rt2x00dev); | |
1044 | ||
1045 | /* | |
181d6902 | 1046 | * Free queue structures. |
95ea3627 | 1047 | */ |
181d6902 | 1048 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1049 | } |
1050 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1051 | ||
1052 | /* | |
1053 | * Device state handlers | |
1054 | */ | |
1055 | #ifdef CONFIG_PM | |
1056 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1057 | { | |
95ea3627 | 1058 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
1059 | |
1060 | /* | |
07126127 | 1061 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1062 | */ |
07126127 ID |
1063 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1064 | return 0; | |
95ea3627 ID |
1065 | |
1066 | /* | |
07126127 | 1067 | * Cleanup as much as possible. |
95ea3627 | 1068 | */ |
95ea3627 | 1069 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1070 | |
1071 | /* | |
1072 | * Suspend/disable extra components. | |
1073 | */ | |
a9450b70 | 1074 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1075 | rt2x00debug_deregister(rt2x00dev); |
1076 | ||
1077 | /* | |
9896322a ID |
1078 | * Set device mode to sleep for power management, |
1079 | * on some hardware this call seems to consistently fail. | |
1080 | * From the specifications it is hard to tell why it fails, | |
1081 | * and if this is a "bad thing". | |
1082 | * Overall it is safe to just ignore the failure and | |
1083 | * continue suspending. The only downside is that the | |
1084 | * device will not be in optimal power save mode, but with | |
1085 | * the radio and the other components already disabled the | |
1086 | * device is as good as disabled. | |
95ea3627 | 1087 | */ |
07126127 | 1088 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
1089 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1090 | "continue suspending.\n"); | |
95ea3627 ID |
1091 | |
1092 | return 0; | |
1093 | } | |
1094 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1095 | ||
1096 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1097 | { | |
95ea3627 | 1098 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
1099 | |
1100 | /* | |
1682fe6d | 1101 | * Restore/enable extra components. |
95ea3627 ID |
1102 | */ |
1103 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1104 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1105 | |
e37ea213 ID |
1106 | /* |
1107 | * We are ready again to receive requests from mac80211. | |
1108 | */ | |
0262ab0d | 1109 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1110 | |
95ea3627 | 1111 | return 0; |
95ea3627 ID |
1112 | } |
1113 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1114 | #endif /* CONFIG_PM */ | |
1115 | ||
1116 | /* | |
1117 | * rt2x00lib module information. | |
1118 | */ | |
1119 | MODULE_AUTHOR(DRV_PROJECT); | |
1120 | MODULE_VERSION(DRV_VERSION); | |
1121 | MODULE_DESCRIPTION("rt2x00 library"); | |
1122 | MODULE_LICENSE("GPL"); |