Commit | Line | Data |
---|---|---|
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 | */ | |
ea175ee2 ID |
71 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_RX_ON); |
72 | rt2x00link_start_tuner(rt2x00dev); | |
95ea3627 | 73 | |
c965c74b ID |
74 | /* |
75 | * Start watchdog monitoring. | |
76 | */ | |
77 | rt2x00link_start_watchdog(rt2x00dev); | |
78 | ||
95ea3627 ID |
79 | /* |
80 | * Start the TX queues. | |
81 | */ | |
36d6825b | 82 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
83 | |
84 | return 0; | |
85 | } | |
86 | ||
87 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
88 | { | |
0262ab0d | 89 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
90 | return; |
91 | ||
95ea3627 | 92 | /* |
a2c9b652 | 93 | * Stop the TX queues in mac80211. |
95ea3627 ID |
94 | */ |
95 | ieee80211_stop_queues(rt2x00dev->hw); | |
a2c9b652 | 96 | rt2x00queue_stop_queues(rt2x00dev); |
95ea3627 | 97 | |
c965c74b ID |
98 | /* |
99 | * Stop watchdog monitoring. | |
100 | */ | |
101 | rt2x00link_stop_watchdog(rt2x00dev); | |
102 | ||
95ea3627 ID |
103 | /* |
104 | * Disable RX. | |
105 | */ | |
ea175ee2 ID |
106 | rt2x00link_stop_tuner(rt2x00dev); |
107 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_RX_OFF); | |
95ea3627 ID |
108 | |
109 | /* | |
110 | * Disable radio. | |
111 | */ | |
112 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 113 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 114 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 115 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
116 | } |
117 | ||
6bb40dd1 ID |
118 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
119 | struct ieee80211_vif *vif) | |
5c58ee51 | 120 | { |
6bb40dd1 ID |
121 | struct rt2x00_dev *rt2x00dev = data; |
122 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
123 | int delayed_flags; |
124 | ||
125 | /* | |
126 | * Copy all data we need during this action under the protection | |
127 | * of a spinlock. Otherwise race conditions might occur which results | |
128 | * into an invalid configuration. | |
129 | */ | |
130 | spin_lock(&intf->lock); | |
131 | ||
6bb40dd1 ID |
132 | delayed_flags = intf->delayed_flags; |
133 | intf->delayed_flags = 0; | |
134 | ||
135 | spin_unlock(&intf->lock); | |
136 | ||
980dfcb9 ID |
137 | /* |
138 | * It is possible the radio was disabled while the work had been | |
139 | * scheduled. If that happens we should return here immediately, | |
140 | * note that in the spinlock protected area above the delayed_flags | |
141 | * have been cleared correctly. | |
142 | */ | |
0262ab0d | 143 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
144 | return; |
145 | ||
bd88a781 | 146 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
a2c9b652 | 147 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
6bb40dd1 | 148 | } |
5c58ee51 | 149 | |
6bb40dd1 ID |
150 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
151 | { | |
152 | struct rt2x00_dev *rt2x00dev = | |
153 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
154 | |
155 | /* | |
6bb40dd1 ID |
156 | * Iterate over each interface and perform the |
157 | * requested configurations. | |
471b3efd | 158 | */ |
6bb40dd1 ID |
159 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
160 | rt2x00lib_intf_scheduled_iter, | |
161 | rt2x00dev); | |
5c58ee51 ID |
162 | } |
163 | ||
95ea3627 ID |
164 | /* |
165 | * Interrupt context handlers. | |
166 | */ | |
07896fe2 HS |
167 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
168 | struct ieee80211_vif *vif) | |
169 | { | |
170 | struct rt2x00_dev *rt2x00dev = data; | |
171 | struct sk_buff *skb; | |
172 | ||
173 | /* | |
174 | * Only AP mode interfaces do broad- and multicast buffering | |
175 | */ | |
176 | if (vif->type != NL80211_IFTYPE_AP) | |
177 | return; | |
178 | ||
179 | /* | |
180 | * Send out buffered broad- and multicast frames | |
181 | */ | |
182 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
183 | while (skb) { | |
184 | rt2x00mac_tx(rt2x00dev->hw, skb); | |
185 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
186 | } | |
187 | } | |
188 | ||
9f926fb5 HS |
189 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
190 | struct ieee80211_vif *vif) | |
95ea3627 | 191 | { |
4dee32f5 | 192 | struct rt2x00_dev *rt2x00dev = data; |
95ea3627 | 193 | |
05c914fe | 194 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 195 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
196 | vif->type != NL80211_IFTYPE_MESH_POINT && |
197 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
198 | return; |
199 | ||
4dee32f5 | 200 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
95ea3627 ID |
201 | } |
202 | ||
203 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
204 | { | |
0262ab0d | 205 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
206 | return; |
207 | ||
07896fe2 | 208 | /* send buffered bc/mc frames out for every bssid */ |
4dee32f5 | 209 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
07896fe2 HS |
210 | rt2x00lib_bc_buffer_iter, |
211 | rt2x00dev); | |
9f926fb5 HS |
212 | /* |
213 | * Devices with pre tbtt interrupt don't need to update the beacon | |
214 | * here as they will fetch the next beacon directly prior to | |
215 | * transmission. | |
216 | */ | |
217 | if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags)) | |
218 | return; | |
07896fe2 HS |
219 | |
220 | /* fetch next beacon */ | |
221 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
9f926fb5 | 222 | rt2x00lib_beaconupdate_iter, |
07896fe2 | 223 | rt2x00dev); |
95ea3627 ID |
224 | } |
225 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
226 | ||
9f926fb5 HS |
227 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
228 | { | |
229 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
230 | return; | |
231 | ||
232 | /* fetch next beacon */ | |
233 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, | |
234 | rt2x00lib_beaconupdate_iter, | |
235 | rt2x00dev); | |
236 | } | |
237 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); | |
238 | ||
652a9dd2 ID |
239 | void rt2x00lib_dmadone(struct queue_entry *entry) |
240 | { | |
a13c8f31 | 241 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
652a9dd2 ID |
242 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DMA_DONE); |
243 | } | |
244 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); | |
245 | ||
181d6902 ID |
246 | void rt2x00lib_txdone(struct queue_entry *entry, |
247 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 248 | { |
181d6902 | 249 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 250 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 251 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 252 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
f8eaec65 | 253 | unsigned int header_length, i; |
92ed48e5 | 254 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 255 | u8 skbdesc_flags = skbdesc->flags; |
2e27cff8 | 256 | bool success; |
d74f5ba4 | 257 | |
e513a0b6 GW |
258 | /* |
259 | * Unmap the skb. | |
260 | */ | |
fa69560f | 261 | rt2x00queue_unmap_skb(entry); |
e513a0b6 GW |
262 | |
263 | /* | |
264 | * Remove the extra tx headroom from the skb. | |
265 | */ | |
266 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); | |
267 | ||
268 | /* | |
269 | * Signal that the TX descriptor is no longer in the skb. | |
270 | */ | |
271 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
272 | ||
f8eaec65 RJH |
273 | /* |
274 | * Determine the length of 802.11 header. | |
275 | */ | |
276 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); | |
277 | ||
9f166171 ID |
278 | /* |
279 | * Remove L2 padding which was added during | |
280 | */ | |
281 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 282 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 283 | |
2bb057d0 ID |
284 | /* |
285 | * If the IV/EIV data was stripped from the frame before it was | |
286 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 287 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
288 | * frame as it was passed to us. |
289 | */ | |
290 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 291 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 292 | |
e039fa4a JB |
293 | /* |
294 | * Send frame to debugfs immediately, after this call is completed | |
295 | * we are going to overwrite the skb->cb array. | |
296 | */ | |
297 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
298 | |
299 | /* | |
2e27cff8 | 300 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 301 | */ |
2e27cff8 | 302 | success = |
ce4c45e0 | 303 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 304 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
305 | |
306 | /* | |
307 | * Update TX statistics. | |
308 | */ | |
309 | rt2x00dev->link.qual.tx_success += success; | |
310 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 311 | |
e6a9854b JB |
312 | rate_idx = skbdesc->tx_rate_idx; |
313 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
314 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
315 | (txdesc->retry + 1) : 1; | |
e6a9854b | 316 | |
181d6902 ID |
317 | /* |
318 | * Initialize TX status | |
319 | */ | |
e039fa4a JB |
320 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
321 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
322 | |
323 | /* | |
324 | * Frame was send with retries, hardware tried | |
325 | * different rates to send out the frame, at each | |
3d2bc103 HS |
326 | * retry it lowered the rate 1 step except when the |
327 | * lowest rate was used. | |
92ed48e5 BP |
328 | */ |
329 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
330 | tx_info->status.rates[i].idx = rate_idx - i; | |
331 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
332 | |
333 | if (rate_idx - i == 0) { | |
334 | /* | |
335 | * The lowest rate (index 0) was used until the | |
336 | * number of max retries was reached. | |
337 | */ | |
338 | tx_info->status.rates[i].count = retry_rates - i; | |
339 | i++; | |
340 | break; | |
341 | } | |
92ed48e5 BP |
342 | tx_info->status.rates[i].count = 1; |
343 | } | |
2e27cff8 | 344 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 345 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 346 | |
e039fa4a | 347 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 348 | if (success) |
e039fa4a | 349 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 350 | else |
181d6902 | 351 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
352 | } |
353 | ||
1df90809 HS |
354 | /* |
355 | * Every single frame has it's own tx status, hence report | |
356 | * every frame as ampdu of size 1. | |
357 | * | |
358 | * TODO: if we can find out how many frames were aggregated | |
359 | * by the hw we could provide the real ampdu_len to mac80211 | |
360 | * which would allow the rc algorithm to better decide on | |
361 | * which rates are suitable. | |
362 | */ | |
363 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
364 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; | |
365 | tx_info->status.ampdu_len = 1; | |
366 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
367 | } | |
368 | ||
e6a9854b | 369 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 370 | if (success) |
181d6902 | 371 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 372 | else |
181d6902 | 373 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
374 | } |
375 | ||
376 | /* | |
7351c6bd JB |
377 | * Only send the status report to mac80211 when it's a frame |
378 | * that originated in mac80211. If this was a extra frame coming | |
379 | * through a mac80211 library call (RTS/CTS) then we should not | |
380 | * send the status report back. | |
95ea3627 | 381 | */ |
7351c6bd | 382 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
7e613e16 | 383 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
baf26a7e | 384 | else |
78e256c9 | 385 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
386 | |
387 | /* | |
388 | * Make this entry available for reuse. | |
389 | */ | |
95ea3627 | 390 | entry->skb = NULL; |
d74f5ba4 ID |
391 | entry->flags = 0; |
392 | ||
798b7adb | 393 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 394 | |
d74f5ba4 ID |
395 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
396 | ||
397 | /* | |
398 | * If the data queue was below the threshold before the txdone | |
399 | * handler we must make sure the packet queue in the mac80211 stack | |
400 | * is reenabled when the txdone handler has finished. | |
401 | */ | |
402 | if (!rt2x00queue_threshold(entry->queue)) | |
403 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
404 | } |
405 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
3392bece ID |
406 | |
407 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) | |
408 | { | |
409 | struct txdone_entry_desc txdesc; | |
410 | ||
411 | txdesc.flags = 0; | |
412 | __set_bit(status, &txdesc.flags); | |
413 | txdesc.retry = 0; | |
414 | ||
415 | rt2x00lib_txdone(entry, &txdesc); | |
416 | } | |
417 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); | |
95ea3627 | 418 | |
35f00cfc ID |
419 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
420 | struct rxdone_entry_desc *rxdesc) | |
421 | { | |
422 | struct ieee80211_supported_band *sband; | |
423 | const struct rt2x00_rate *rate; | |
424 | unsigned int i; | |
3590eea4 ID |
425 | int signal = rxdesc->signal; |
426 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
427 | ||
428 | switch (rxdesc->rate_mode) { | |
429 | case RATE_MODE_CCK: | |
430 | case RATE_MODE_OFDM: | |
431 | /* | |
432 | * For non-HT rates the MCS value needs to contain the | |
433 | * actually used rate modulation (CCK or OFDM). | |
434 | */ | |
435 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
436 | signal = RATE_MCS(rxdesc->rate_mode, signal); | |
437 | ||
438 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
439 | for (i = 0; i < sband->n_bitrates; i++) { | |
440 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
441 | if (((type == RXDONE_SIGNAL_PLCP) && | |
442 | (rate->plcp == signal)) || | |
443 | ((type == RXDONE_SIGNAL_BITRATE) && | |
444 | (rate->bitrate == signal)) || | |
445 | ((type == RXDONE_SIGNAL_MCS) && | |
446 | (rate->mcs == signal))) { | |
447 | return i; | |
448 | } | |
35f00cfc | 449 | } |
3590eea4 ID |
450 | break; |
451 | case RATE_MODE_HT_MIX: | |
452 | case RATE_MODE_HT_GREENFIELD: | |
453 | if (signal >= 0 && signal <= 76) | |
454 | return signal; | |
455 | break; | |
456 | default: | |
457 | break; | |
35f00cfc ID |
458 | } |
459 | ||
460 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
3590eea4 ID |
461 | "mode=0x%.4x, signal=0x%.4x, type=%d.\n", |
462 | rxdesc->rate_mode, signal, type); | |
35f00cfc ID |
463 | return 0; |
464 | } | |
465 | ||
fa69560f | 466 | void rt2x00lib_rxdone(struct queue_entry *entry) |
95ea3627 | 467 | { |
fa69560f | 468 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
c4da0048 GW |
469 | struct rxdone_entry_desc rxdesc; |
470 | struct sk_buff *skb; | |
e5ef5bad | 471 | struct ieee80211_rx_status *rx_status; |
2bb057d0 | 472 | unsigned int header_length; |
35f00cfc | 473 | int rate_idx; |
7e613e16 | 474 | |
070192dd ID |
475 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
476 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
477 | goto submit_entry; | |
478 | ||
7e613e16 ID |
479 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
480 | goto submit_entry; | |
481 | ||
c4da0048 GW |
482 | /* |
483 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
484 | * received frame and reuse the existing buffer. | |
485 | */ | |
fa69560f | 486 | skb = rt2x00queue_alloc_rxskb(entry); |
c4da0048 | 487 | if (!skb) |
1550c8ef | 488 | goto submit_entry; |
c4da0048 GW |
489 | |
490 | /* | |
491 | * Unmap the skb. | |
492 | */ | |
fa69560f | 493 | rt2x00queue_unmap_skb(entry); |
c4da0048 GW |
494 | |
495 | /* | |
496 | * Extract the RXD details. | |
497 | */ | |
498 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
499 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 500 | |
239c249d GW |
501 | /* |
502 | * The data behind the ieee80211 header must be | |
a9f853dd | 503 | * aligned on a 4 byte boundary. |
239c249d | 504 | */ |
2bb057d0 | 505 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 506 | |
2bb057d0 ID |
507 | /* |
508 | * Hardware might have stripped the IV/EIV/ICV data, | |
509 | * in that case it is possible that the data was | |
3ad2f3fb | 510 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
511 | * in which case we should reinsert the data into the frame. |
512 | */ | |
74415edb | 513 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 514 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 515 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 516 | &rxdesc); |
b7340833 GW |
517 | else if (header_length && |
518 | (rxdesc.size > header_length) && | |
519 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 520 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 521 | else |
daee6c09 | 522 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 523 | |
1398d458 AB |
524 | /* Trim buffer to correct size */ |
525 | skb_trim(entry->skb, rxdesc.size); | |
526 | ||
95ea3627 | 527 | /* |
3590eea4 | 528 | * Translate the signal to the correct bitrate index. |
95ea3627 | 529 | */ |
3590eea4 ID |
530 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
531 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || | |
532 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) | |
35f00cfc | 533 | rxdesc.flags |= RX_FLAG_HT; |
866a0503 | 534 | |
61af43c5 | 535 | /* |
84e3196f | 536 | * Update extra components |
61af43c5 | 537 | */ |
84e3196f ID |
538 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
539 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
e5ef5bad | 540 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
69f81a2c | 541 | |
e5ef5bad ID |
542 | /* |
543 | * Initialize RX status information, and send frame | |
544 | * to mac80211. | |
545 | */ | |
546 | rx_status = IEEE80211_SKB_RXCB(entry->skb); | |
ae73e58e | 547 | rx_status->mactime = rxdesc.timestamp; |
e5ef5bad ID |
548 | rx_status->band = rt2x00dev->curr_band; |
549 | rx_status->freq = rt2x00dev->curr_freq; | |
35f00cfc | 550 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
551 | rx_status->signal = rxdesc.rssi; |
552 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 553 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 | 554 | |
7e613e16 | 555 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
c4da0048 GW |
556 | |
557 | /* | |
558 | * Replace the skb with the freshly allocated one. | |
559 | */ | |
560 | entry->skb = skb; | |
d74f5ba4 | 561 | |
7e613e16 | 562 | submit_entry: |
070192dd | 563 | entry->flags = 0; |
7e613e16 | 564 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
070192dd ID |
565 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
566 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) { | |
567 | rt2x00dev->ops->lib->clear_entry(entry); | |
568 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
569 | } | |
95ea3627 ID |
570 | } |
571 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
572 | ||
95ea3627 ID |
573 | /* |
574 | * Driver initialization handlers. | |
575 | */ | |
70e2fed4 ID |
576 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
577 | { | |
3d8606a6 | 578 | .flags = DEV_RATE_CCK, |
70e2fed4 | 579 | .bitrate = 10, |
aa776721 | 580 | .ratemask = BIT(0), |
70e2fed4 | 581 | .plcp = 0x00, |
35f00cfc | 582 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
583 | }, |
584 | { | |
3d8606a6 | 585 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 586 | .bitrate = 20, |
aa776721 | 587 | .ratemask = BIT(1), |
70e2fed4 | 588 | .plcp = 0x01, |
35f00cfc | 589 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
590 | }, |
591 | { | |
3d8606a6 | 592 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 593 | .bitrate = 55, |
aa776721 | 594 | .ratemask = BIT(2), |
70e2fed4 | 595 | .plcp = 0x02, |
35f00cfc | 596 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
597 | }, |
598 | { | |
3d8606a6 | 599 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 600 | .bitrate = 110, |
aa776721 | 601 | .ratemask = BIT(3), |
70e2fed4 | 602 | .plcp = 0x03, |
35f00cfc | 603 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
604 | }, |
605 | { | |
3d8606a6 | 606 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 607 | .bitrate = 60, |
aa776721 | 608 | .ratemask = BIT(4), |
70e2fed4 | 609 | .plcp = 0x0b, |
35f00cfc | 610 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
611 | }, |
612 | { | |
613 | .flags = DEV_RATE_OFDM, | |
614 | .bitrate = 90, | |
aa776721 | 615 | .ratemask = BIT(5), |
70e2fed4 | 616 | .plcp = 0x0f, |
35f00cfc | 617 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
618 | }, |
619 | { | |
3d8606a6 | 620 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 621 | .bitrate = 120, |
aa776721 | 622 | .ratemask = BIT(6), |
70e2fed4 | 623 | .plcp = 0x0a, |
35f00cfc | 624 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
625 | }, |
626 | { | |
627 | .flags = DEV_RATE_OFDM, | |
628 | .bitrate = 180, | |
aa776721 | 629 | .ratemask = BIT(7), |
70e2fed4 | 630 | .plcp = 0x0e, |
35f00cfc | 631 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
632 | }, |
633 | { | |
3d8606a6 | 634 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 635 | .bitrate = 240, |
aa776721 | 636 | .ratemask = BIT(8), |
70e2fed4 | 637 | .plcp = 0x09, |
35f00cfc | 638 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
639 | }, |
640 | { | |
641 | .flags = DEV_RATE_OFDM, | |
642 | .bitrate = 360, | |
aa776721 | 643 | .ratemask = BIT(9), |
70e2fed4 | 644 | .plcp = 0x0d, |
35f00cfc | 645 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
646 | }, |
647 | { | |
648 | .flags = DEV_RATE_OFDM, | |
649 | .bitrate = 480, | |
aa776721 | 650 | .ratemask = BIT(10), |
70e2fed4 | 651 | .plcp = 0x08, |
35f00cfc | 652 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
653 | }, |
654 | { | |
655 | .flags = DEV_RATE_OFDM, | |
656 | .bitrate = 540, | |
aa776721 | 657 | .ratemask = BIT(11), |
70e2fed4 | 658 | .plcp = 0x0c, |
35f00cfc | 659 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
660 | }, |
661 | }; | |
662 | ||
95ea3627 ID |
663 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
664 | const int channel, const int tx_power, | |
665 | const int value) | |
666 | { | |
f2a3c7f5 | 667 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
668 | entry->hw_value = value; |
669 | entry->max_power = tx_power; | |
670 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
671 | } |
672 | ||
673 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 674 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 675 | { |
70e2fed4 ID |
676 | entry->flags = 0; |
677 | entry->bitrate = rate->bitrate; | |
c2361bae | 678 | entry->hw_value = index; |
3ea96463 | 679 | entry->hw_value_short = index; |
70e2fed4 | 680 | |
3ea96463 | 681 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 682 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
683 | } |
684 | ||
685 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
686 | struct hw_mode_spec *spec) | |
687 | { | |
688 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
689 | struct ieee80211_channel *channels; |
690 | struct ieee80211_rate *rates; | |
31562e80 | 691 | unsigned int num_rates; |
95ea3627 | 692 | unsigned int i; |
95ea3627 | 693 | |
31562e80 ID |
694 | num_rates = 0; |
695 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
696 | num_rates += 4; | |
697 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
698 | num_rates += 8; | |
95ea3627 ID |
699 | |
700 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
701 | if (!channels) | |
8318d78a | 702 | return -ENOMEM; |
95ea3627 | 703 | |
31562e80 | 704 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
705 | if (!rates) |
706 | goto exit_free_channels; | |
707 | ||
708 | /* | |
709 | * Initialize Rate list. | |
710 | */ | |
31562e80 | 711 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 712 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
713 | |
714 | /* | |
715 | * Initialize Channel list. | |
716 | */ | |
717 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 718 | rt2x00lib_channel(&channels[i], |
8c5e7a5f | 719 | spec->channels[i].channel, |
8d1331b3 | 720 | spec->channels_info[i].max_power, i); |
95ea3627 ID |
721 | } |
722 | ||
723 | /* | |
31562e80 | 724 | * Intitialize 802.11b, 802.11g |
95ea3627 | 725 | * Rates: CCK, OFDM. |
8318d78a | 726 | * Channels: 2.4 GHz |
95ea3627 | 727 | */ |
47ac2683 | 728 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
729 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
730 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
731 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
732 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
733 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
734 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
735 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
736 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
737 | } |
738 | ||
739 | /* | |
740 | * Intitialize 802.11a | |
741 | * Rates: OFDM. | |
742 | * Channels: OFDM, UNII, HiperLAN2. | |
743 | */ | |
47ac2683 | 744 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
745 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
746 | spec->num_channels - 14; | |
747 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
748 | num_rates - 4; | |
749 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
750 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
751 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
752 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
753 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
754 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
755 | } |
756 | ||
95ea3627 ID |
757 | return 0; |
758 | ||
8318d78a | 759 | exit_free_channels: |
95ea3627 | 760 | kfree(channels); |
95ea3627 ID |
761 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
762 | return -ENOMEM; | |
763 | } | |
764 | ||
765 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
766 | { | |
0262ab0d | 767 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
768 | ieee80211_unregister_hw(rt2x00dev->hw); |
769 | ||
8318d78a JB |
770 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
771 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
772 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
773 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
774 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 775 | } |
8c5e7a5f ID |
776 | |
777 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
778 | } |
779 | ||
780 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
781 | { | |
782 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
783 | int status; | |
784 | ||
0262ab0d ID |
785 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
786 | return 0; | |
787 | ||
95ea3627 ID |
788 | /* |
789 | * Initialize HW modes. | |
790 | */ | |
791 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
792 | if (status) | |
793 | return status; | |
794 | ||
61448f88 GW |
795 | /* |
796 | * Initialize HW fields. | |
797 | */ | |
798 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
799 | ||
e6218cc4 GW |
800 | /* |
801 | * Initialize extra TX headroom required. | |
802 | */ | |
7a4a77b7 GW |
803 | rt2x00dev->hw->extra_tx_headroom = |
804 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
805 | rt2x00dev->ops->extra_tx_headroom); | |
806 | ||
807 | /* | |
808 | * Take TX headroom required for alignment into account. | |
809 | */ | |
810 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
811 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
812 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
813 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 814 | |
96c3da7d HS |
815 | /* |
816 | * Allocate tx status FIFO for driver use. | |
817 | */ | |
818 | if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags) && | |
819 | rt2x00dev->ops->lib->txstatus_tasklet) { | |
820 | /* | |
821 | * Allocate txstatus fifo and tasklet, we use a size of 512 | |
822 | * for the kfifo which is big enough to store 512/4=128 tx | |
823 | * status reports. In the worst case (tx status for all tx | |
824 | * queues gets reported before we've got a chance to handle | |
825 | * them) 24*4=384 tx status reports need to be cached. | |
826 | */ | |
827 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, 512, | |
828 | GFP_KERNEL); | |
829 | if (status) | |
830 | return status; | |
831 | ||
832 | /* tasklet for processing the tx status reports. */ | |
833 | tasklet_init(&rt2x00dev->txstatus_tasklet, | |
834 | rt2x00dev->ops->lib->txstatus_tasklet, | |
835 | (unsigned long)rt2x00dev); | |
836 | ||
837 | } | |
838 | ||
95ea3627 ID |
839 | /* |
840 | * Register HW. | |
841 | */ | |
842 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 843 | if (status) |
95ea3627 | 844 | return status; |
95ea3627 | 845 | |
0262ab0d | 846 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
847 | |
848 | return 0; | |
849 | } | |
850 | ||
851 | /* | |
852 | * Initialization/uninitialization handlers. | |
853 | */ | |
e37ea213 | 854 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 855 | { |
0262ab0d | 856 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
857 | return; |
858 | ||
859 | /* | |
1682fe6d | 860 | * Unregister extra components. |
95ea3627 ID |
861 | */ |
862 | rt2x00rfkill_unregister(rt2x00dev); | |
863 | ||
864 | /* | |
865 | * Allow the HW to uninitialize. | |
866 | */ | |
867 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
868 | ||
869 | /* | |
181d6902 | 870 | * Free allocated queue entries. |
95ea3627 | 871 | */ |
181d6902 | 872 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
873 | } |
874 | ||
e37ea213 | 875 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
876 | { |
877 | int status; | |
878 | ||
0262ab0d | 879 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
880 | return 0; |
881 | ||
882 | /* | |
181d6902 | 883 | * Allocate all queue entries. |
95ea3627 | 884 | */ |
181d6902 ID |
885 | status = rt2x00queue_initialize(rt2x00dev); |
886 | if (status) | |
95ea3627 | 887 | return status; |
95ea3627 ID |
888 | |
889 | /* | |
890 | * Initialize the device. | |
891 | */ | |
892 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
893 | if (status) { |
894 | rt2x00queue_uninitialize(rt2x00dev); | |
895 | return status; | |
896 | } | |
95ea3627 | 897 | |
0262ab0d | 898 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
899 | |
900 | /* | |
1682fe6d | 901 | * Register the extra components. |
95ea3627 | 902 | */ |
1682fe6d | 903 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
904 | |
905 | return 0; | |
95ea3627 ID |
906 | } |
907 | ||
e37ea213 ID |
908 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
909 | { | |
910 | int retval; | |
911 | ||
0262ab0d | 912 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
913 | return 0; |
914 | ||
915 | /* | |
916 | * If this is the first interface which is added, | |
917 | * we should load the firmware now. | |
918 | */ | |
9404ef34 ID |
919 | retval = rt2x00lib_load_firmware(rt2x00dev); |
920 | if (retval) | |
921 | return retval; | |
e37ea213 ID |
922 | |
923 | /* | |
924 | * Initialize the device. | |
925 | */ | |
926 | retval = rt2x00lib_initialize(rt2x00dev); | |
927 | if (retval) | |
928 | return retval; | |
929 | ||
6bb40dd1 ID |
930 | rt2x00dev->intf_ap_count = 0; |
931 | rt2x00dev->intf_sta_count = 0; | |
932 | rt2x00dev->intf_associated = 0; | |
933 | ||
bdfa500b ID |
934 | /* Enable the radio */ |
935 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1f0280cb | 936 | if (retval) |
bdfa500b | 937 | return retval; |
bdfa500b | 938 | |
0262ab0d | 939 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
940 | |
941 | return 0; | |
942 | } | |
943 | ||
944 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
945 | { | |
0262ab0d | 946 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
947 | return; |
948 | ||
949 | /* | |
950 | * Perhaps we can add something smarter here, | |
951 | * but for now just disabling the radio should do. | |
952 | */ | |
953 | rt2x00lib_disable_radio(rt2x00dev); | |
954 | ||
6bb40dd1 ID |
955 | rt2x00dev->intf_ap_count = 0; |
956 | rt2x00dev->intf_sta_count = 0; | |
957 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
958 | } |
959 | ||
95ea3627 ID |
960 | /* |
961 | * driver allocation handlers. | |
962 | */ | |
95ea3627 ID |
963 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
964 | { | |
965 | int retval = -ENOMEM; | |
966 | ||
8ff48a8b ID |
967 | mutex_init(&rt2x00dev->csr_mutex); |
968 | ||
66f84d65 SC |
969 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
970 | ||
6bb40dd1 ID |
971 | /* |
972 | * Make room for rt2x00_intf inside the per-interface | |
973 | * structure ieee80211_vif. | |
974 | */ | |
975 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
976 | ||
3514a441 ID |
977 | /* |
978 | * Determine which operating modes are supported, all modes | |
979 | * which require beaconing, depend on the availability of | |
980 | * beacon entries. | |
981 | */ | |
982 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
983 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
984 | rt2x00dev->hw->wiphy->interface_modes |= | |
985 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 986 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
987 | BIT(NL80211_IFTYPE_MESH_POINT) | |
988 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 989 | |
9acd56d3 SB |
990 | /* |
991 | * Initialize configuration work. | |
992 | */ | |
993 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); | |
994 | ||
95ea3627 ID |
995 | /* |
996 | * Let the driver probe the device to detect the capabilities. | |
997 | */ | |
998 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
999 | if (retval) { | |
1000 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1001 | goto exit; | |
1002 | } | |
1003 | ||
95ea3627 | 1004 | /* |
181d6902 | 1005 | * Allocate queue array. |
95ea3627 | 1006 | */ |
181d6902 | 1007 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1008 | if (retval) |
1009 | goto exit; | |
1010 | ||
1011 | /* | |
1012 | * Initialize ieee80211 structure. | |
1013 | */ | |
1014 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1015 | if (retval) { | |
1016 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1017 | goto exit; | |
1018 | } | |
1019 | ||
a9450b70 | 1020 | /* |
1682fe6d | 1021 | * Register extra components. |
a9450b70 | 1022 | */ |
84e3196f | 1023 | rt2x00link_register(rt2x00dev); |
a9450b70 | 1024 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
1025 | rt2x00debug_register(rt2x00dev); |
1026 | ||
1027 | return 0; | |
1028 | ||
1029 | exit: | |
1030 | rt2x00lib_remove_dev(rt2x00dev); | |
1031 | ||
1032 | return retval; | |
1033 | } | |
1034 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1035 | ||
1036 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1037 | { | |
0262ab0d | 1038 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1039 | |
95ea3627 ID |
1040 | /* |
1041 | * Disable radio. | |
1042 | */ | |
1043 | rt2x00lib_disable_radio(rt2x00dev); | |
1044 | ||
d8cc8926 PR |
1045 | /* |
1046 | * Stop all work. | |
1047 | */ | |
d8cc8926 | 1048 | cancel_work_sync(&rt2x00dev->intf_work); |
7e613e16 ID |
1049 | cancel_work_sync(&rt2x00dev->rxdone_work); |
1050 | cancel_work_sync(&rt2x00dev->txdone_work); | |
d8cc8926 | 1051 | |
96c3da7d HS |
1052 | /* |
1053 | * Free the tx status fifo. | |
1054 | */ | |
1055 | kfifo_free(&rt2x00dev->txstatus_fifo); | |
1056 | ||
1057 | /* | |
1058 | * Kill the tx status tasklet. | |
1059 | */ | |
1060 | tasklet_kill(&rt2x00dev->txstatus_tasklet); | |
1061 | ||
95ea3627 ID |
1062 | /* |
1063 | * Uninitialize device. | |
1064 | */ | |
1065 | rt2x00lib_uninitialize(rt2x00dev); | |
1066 | ||
1067 | /* | |
1682fe6d | 1068 | * Free extra components |
95ea3627 ID |
1069 | */ |
1070 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
1071 | rt2x00leds_unregister(rt2x00dev); |
1072 | ||
95ea3627 ID |
1073 | /* |
1074 | * Free ieee80211_hw memory. | |
1075 | */ | |
1076 | rt2x00lib_remove_hw(rt2x00dev); | |
1077 | ||
1078 | /* | |
1079 | * Free firmware image. | |
1080 | */ | |
1081 | rt2x00lib_free_firmware(rt2x00dev); | |
1082 | ||
1083 | /* | |
181d6902 | 1084 | * Free queue structures. |
95ea3627 | 1085 | */ |
181d6902 | 1086 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1087 | } |
1088 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1089 | ||
1090 | /* | |
1091 | * Device state handlers | |
1092 | */ | |
1093 | #ifdef CONFIG_PM | |
1094 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1095 | { | |
95ea3627 | 1096 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
1097 | |
1098 | /* | |
07126127 | 1099 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1100 | */ |
07126127 ID |
1101 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1102 | return 0; | |
95ea3627 ID |
1103 | |
1104 | /* | |
07126127 | 1105 | * Cleanup as much as possible. |
95ea3627 | 1106 | */ |
95ea3627 | 1107 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1108 | |
1109 | /* | |
1110 | * Suspend/disable extra components. | |
1111 | */ | |
a9450b70 | 1112 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1113 | rt2x00debug_deregister(rt2x00dev); |
1114 | ||
1115 | /* | |
9896322a ID |
1116 | * Set device mode to sleep for power management, |
1117 | * on some hardware this call seems to consistently fail. | |
1118 | * From the specifications it is hard to tell why it fails, | |
1119 | * and if this is a "bad thing". | |
1120 | * Overall it is safe to just ignore the failure and | |
1121 | * continue suspending. The only downside is that the | |
1122 | * device will not be in optimal power save mode, but with | |
1123 | * the radio and the other components already disabled the | |
1124 | * device is as good as disabled. | |
95ea3627 | 1125 | */ |
07126127 | 1126 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
1127 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1128 | "continue suspending.\n"); | |
95ea3627 ID |
1129 | |
1130 | return 0; | |
1131 | } | |
1132 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1133 | ||
1134 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1135 | { | |
95ea3627 | 1136 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
1137 | |
1138 | /* | |
1682fe6d | 1139 | * Restore/enable extra components. |
95ea3627 ID |
1140 | */ |
1141 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1142 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1143 | |
e37ea213 ID |
1144 | /* |
1145 | * We are ready again to receive requests from mac80211. | |
1146 | */ | |
0262ab0d | 1147 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1148 | |
95ea3627 | 1149 | return 0; |
95ea3627 ID |
1150 | } |
1151 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1152 | #endif /* CONFIG_PM */ | |
1153 | ||
1154 | /* | |
1155 | * rt2x00lib module information. | |
1156 | */ | |
1157 | MODULE_AUTHOR(DRV_PROJECT); | |
1158 | MODULE_VERSION(DRV_VERSION); | |
1159 | MODULE_DESCRIPTION("rt2x00 library"); | |
1160 | MODULE_LICENSE("GPL"); |