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> |
f78987cf | 30 | #include <linux/log2.h> |
95ea3627 ID |
31 | |
32 | #include "rt2x00.h" | |
33 | #include "rt2x00lib.h" | |
34 | ||
18325523 HS |
35 | /* |
36 | * Utility functions. | |
37 | */ | |
38 | u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev, | |
39 | struct ieee80211_vif *vif) | |
40 | { | |
41 | /* | |
42 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
43 | * contains the bss number, see BSS_ID_MASK comments for details. | |
44 | */ | |
45 | if (rt2x00dev->intf_sta_count) | |
46 | return 0; | |
47 | return vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1); | |
48 | } | |
49 | EXPORT_SYMBOL_GPL(rt2x00lib_get_bssidx); | |
50 | ||
95ea3627 ID |
51 | /* |
52 | * Radio control handlers. | |
53 | */ | |
54 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
55 | { | |
56 | int status; | |
57 | ||
58 | /* | |
59 | * Don't enable the radio twice. | |
60 | * And check if the hardware button has been disabled. | |
61 | */ | |
4b9631a4 | 62 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
63 | return 0; |
64 | ||
837e7f24 | 65 | /* |
181d6902 | 66 | * Initialize all data queues. |
837e7f24 | 67 | */ |
798b7adb | 68 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 69 | |
95ea3627 ID |
70 | /* |
71 | * Enable radio. | |
72 | */ | |
a2e1d52a ID |
73 | status = |
74 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
75 | if (status) |
76 | return status; | |
77 | ||
2b08da3f ID |
78 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
79 | ||
a2e1d52a | 80 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 81 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 82 | |
0262ab0d | 83 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
84 | |
85 | /* | |
0b7fde54 | 86 | * Enable queues. |
95ea3627 | 87 | */ |
0b7fde54 | 88 | rt2x00queue_start_queues(rt2x00dev); |
ea175ee2 | 89 | rt2x00link_start_tuner(rt2x00dev); |
9e33a355 | 90 | rt2x00link_start_agc(rt2x00dev); |
7b8a00dc | 91 | if (rt2x00_has_cap_vco_recalibration(rt2x00dev)) |
2e9c43dd | 92 | rt2x00link_start_vcocal(rt2x00dev); |
95ea3627 | 93 | |
c965c74b ID |
94 | /* |
95 | * Start watchdog monitoring. | |
96 | */ | |
97 | rt2x00link_start_watchdog(rt2x00dev); | |
98 | ||
95ea3627 ID |
99 | return 0; |
100 | } | |
101 | ||
102 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
103 | { | |
0262ab0d | 104 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
105 | return; |
106 | ||
c965c74b ID |
107 | /* |
108 | * Stop watchdog monitoring. | |
109 | */ | |
110 | rt2x00link_stop_watchdog(rt2x00dev); | |
111 | ||
95ea3627 | 112 | /* |
0b7fde54 | 113 | * Stop all queues |
95ea3627 | 114 | */ |
9e33a355 | 115 | rt2x00link_stop_agc(rt2x00dev); |
7b8a00dc | 116 | if (rt2x00_has_cap_vco_recalibration(rt2x00dev)) |
2e9c43dd | 117 | rt2x00link_stop_vcocal(rt2x00dev); |
ea175ee2 | 118 | rt2x00link_stop_tuner(rt2x00dev); |
0b7fde54 | 119 | rt2x00queue_stop_queues(rt2x00dev); |
5be65609 | 120 | rt2x00queue_flush_queues(rt2x00dev, true); |
95ea3627 ID |
121 | |
122 | /* | |
123 | * Disable radio. | |
124 | */ | |
125 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 126 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 127 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 128 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
129 | } |
130 | ||
6bb40dd1 ID |
131 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
132 | struct ieee80211_vif *vif) | |
5c58ee51 | 133 | { |
6bb40dd1 ID |
134 | struct rt2x00_dev *rt2x00dev = data; |
135 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 | 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 | ||
bfe6a15d | 146 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) |
69cf36a4 | 147 | rt2x00queue_update_beacon(rt2x00dev, vif); |
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 | 159 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
8b2c9824 | 160 | IEEE80211_IFACE_ITER_RESUME_ALL, |
6bb40dd1 ID |
161 | rt2x00lib_intf_scheduled_iter, |
162 | rt2x00dev); | |
5c58ee51 ID |
163 | } |
164 | ||
1c0bcf89 ID |
165 | static void rt2x00lib_autowakeup(struct work_struct *work) |
166 | { | |
167 | struct rt2x00_dev *rt2x00dev = | |
168 | container_of(work, struct rt2x00_dev, autowakeup_work.work); | |
169 | ||
3bb42a64 SG |
170 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
171 | return; | |
172 | ||
1c0bcf89 | 173 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) |
ec9c4989 | 174 | rt2x00_err(rt2x00dev, "Device failed to wakeup\n"); |
1c0bcf89 ID |
175 | clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags); |
176 | } | |
177 | ||
95ea3627 ID |
178 | /* |
179 | * Interrupt context handlers. | |
180 | */ | |
07896fe2 HS |
181 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
182 | struct ieee80211_vif *vif) | |
183 | { | |
184 | struct rt2x00_dev *rt2x00dev = data; | |
185 | struct sk_buff *skb; | |
186 | ||
187 | /* | |
188 | * Only AP mode interfaces do broad- and multicast buffering | |
189 | */ | |
190 | if (vif->type != NL80211_IFTYPE_AP) | |
191 | return; | |
192 | ||
193 | /* | |
194 | * Send out buffered broad- and multicast frames | |
195 | */ | |
196 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
197 | while (skb) { | |
36323f81 | 198 | rt2x00mac_tx(rt2x00dev->hw, NULL, skb); |
07896fe2 HS |
199 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
200 | } | |
201 | } | |
202 | ||
9f926fb5 HS |
203 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
204 | struct ieee80211_vif *vif) | |
95ea3627 | 205 | { |
4dee32f5 | 206 | struct rt2x00_dev *rt2x00dev = data; |
95ea3627 | 207 | |
05c914fe | 208 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 209 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
210 | vif->type != NL80211_IFTYPE_MESH_POINT && |
211 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
212 | return; |
213 | ||
8d59c4e9 HS |
214 | /* |
215 | * Update the beacon without locking. This is safe on PCI devices | |
216 | * as they only update the beacon periodically here. This should | |
217 | * never be called for USB devices. | |
218 | */ | |
219 | WARN_ON(rt2x00_is_usb(rt2x00dev)); | |
220 | rt2x00queue_update_beacon_locked(rt2x00dev, vif); | |
95ea3627 ID |
221 | } |
222 | ||
223 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
224 | { | |
0262ab0d | 225 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
226 | return; |
227 | ||
07896fe2 | 228 | /* send buffered bc/mc frames out for every bssid */ |
8b2c9824 JB |
229 | ieee80211_iterate_active_interfaces_atomic( |
230 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
231 | rt2x00lib_bc_buffer_iter, rt2x00dev); | |
9f926fb5 HS |
232 | /* |
233 | * Devices with pre tbtt interrupt don't need to update the beacon | |
234 | * here as they will fetch the next beacon directly prior to | |
235 | * transmission. | |
236 | */ | |
7b8a00dc | 237 | if (rt2x00_has_cap_pre_tbtt_interrupt(rt2x00dev)) |
9f926fb5 | 238 | return; |
07896fe2 HS |
239 | |
240 | /* fetch next beacon */ | |
8b2c9824 JB |
241 | ieee80211_iterate_active_interfaces_atomic( |
242 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
243 | rt2x00lib_beaconupdate_iter, rt2x00dev); | |
95ea3627 ID |
244 | } |
245 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
246 | ||
9f926fb5 HS |
247 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
248 | { | |
249 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
250 | return; | |
251 | ||
252 | /* fetch next beacon */ | |
8b2c9824 JB |
253 | ieee80211_iterate_active_interfaces_atomic( |
254 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
255 | rt2x00lib_beaconupdate_iter, rt2x00dev); | |
9f926fb5 HS |
256 | } |
257 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); | |
258 | ||
64e7d723 ID |
259 | void rt2x00lib_dmastart(struct queue_entry *entry) |
260 | { | |
261 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); | |
75256f03 | 262 | rt2x00queue_index_inc(entry, Q_INDEX); |
64e7d723 ID |
263 | } |
264 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); | |
265 | ||
652a9dd2 ID |
266 | void rt2x00lib_dmadone(struct queue_entry *entry) |
267 | { | |
dba5dc1a | 268 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
a13c8f31 | 269 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
75256f03 | 270 | rt2x00queue_index_inc(entry, Q_INDEX_DMA_DONE); |
652a9dd2 ID |
271 | } |
272 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); | |
273 | ||
84e9e8eb HS |
274 | static inline int rt2x00lib_txdone_bar_status(struct queue_entry *entry) |
275 | { | |
276 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; | |
277 | struct ieee80211_bar *bar = (void *) entry->skb->data; | |
278 | struct rt2x00_bar_list_entry *bar_entry; | |
279 | int ret; | |
280 | ||
281 | if (likely(!ieee80211_is_back_req(bar->frame_control))) | |
282 | return 0; | |
283 | ||
284 | /* | |
285 | * Unlike all other frames, the status report for BARs does | |
286 | * not directly come from the hardware as it is incapable of | |
287 | * matching a BA to a previously send BAR. The hardware will | |
288 | * report all BARs as if they weren't acked at all. | |
289 | * | |
290 | * Instead the RX-path will scan for incoming BAs and set the | |
291 | * block_acked flag if it sees one that was likely caused by | |
292 | * a BAR from us. | |
293 | * | |
294 | * Remove remaining BARs here and return their status for | |
295 | * TX done processing. | |
296 | */ | |
297 | ret = 0; | |
298 | rcu_read_lock(); | |
299 | list_for_each_entry_rcu(bar_entry, &rt2x00dev->bar_list, list) { | |
300 | if (bar_entry->entry != entry) | |
301 | continue; | |
302 | ||
303 | spin_lock_bh(&rt2x00dev->bar_list_lock); | |
304 | /* Return whether this BAR was blockacked or not */ | |
305 | ret = bar_entry->block_acked; | |
306 | /* Remove the BAR from our checklist */ | |
307 | list_del_rcu(&bar_entry->list); | |
308 | spin_unlock_bh(&rt2x00dev->bar_list_lock); | |
309 | kfree_rcu(bar_entry, head); | |
310 | ||
311 | break; | |
312 | } | |
313 | rcu_read_unlock(); | |
314 | ||
315 | return ret; | |
316 | } | |
317 | ||
181d6902 ID |
318 | void rt2x00lib_txdone(struct queue_entry *entry, |
319 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 320 | { |
181d6902 | 321 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 322 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 323 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
f8eaec65 | 324 | unsigned int header_length, i; |
92ed48e5 | 325 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 326 | u8 skbdesc_flags = skbdesc->flags; |
2e27cff8 | 327 | bool success; |
d74f5ba4 | 328 | |
e513a0b6 GW |
329 | /* |
330 | * Unmap the skb. | |
331 | */ | |
fa69560f | 332 | rt2x00queue_unmap_skb(entry); |
e513a0b6 GW |
333 | |
334 | /* | |
335 | * Remove the extra tx headroom from the skb. | |
336 | */ | |
5616a6ef | 337 | skb_pull(entry->skb, rt2x00dev->extra_tx_headroom); |
e513a0b6 GW |
338 | |
339 | /* | |
340 | * Signal that the TX descriptor is no longer in the skb. | |
341 | */ | |
342 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
343 | ||
f8eaec65 RJH |
344 | /* |
345 | * Determine the length of 802.11 header. | |
346 | */ | |
347 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); | |
348 | ||
9f166171 ID |
349 | /* |
350 | * Remove L2 padding which was added during | |
351 | */ | |
7dab73b3 | 352 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
daee6c09 | 353 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 354 | |
2bb057d0 ID |
355 | /* |
356 | * If the IV/EIV data was stripped from the frame before it was | |
357 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 358 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
359 | * frame as it was passed to us. |
360 | */ | |
7b8a00dc | 361 | if (rt2x00_has_cap_hw_crypto(rt2x00dev)) |
9f166171 | 362 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 363 | |
e039fa4a JB |
364 | /* |
365 | * Send frame to debugfs immediately, after this call is completed | |
366 | * we are going to overwrite the skb->cb array. | |
367 | */ | |
368 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
369 | |
370 | /* | |
84e9e8eb HS |
371 | * Determine if the frame has been successfully transmitted and |
372 | * remove BARs from our check list while checking for their | |
373 | * TX status. | |
95ea3627 | 374 | */ |
2e27cff8 | 375 | success = |
84e9e8eb | 376 | rt2x00lib_txdone_bar_status(entry) || |
ce4c45e0 | 377 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 378 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
379 | |
380 | /* | |
381 | * Update TX statistics. | |
382 | */ | |
383 | rt2x00dev->link.qual.tx_success += success; | |
384 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 385 | |
e6a9854b JB |
386 | rate_idx = skbdesc->tx_rate_idx; |
387 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
388 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
389 | (txdesc->retry + 1) : 1; | |
e6a9854b | 390 | |
181d6902 ID |
391 | /* |
392 | * Initialize TX status | |
393 | */ | |
e039fa4a JB |
394 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
395 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
396 | |
397 | /* | |
398 | * Frame was send with retries, hardware tried | |
399 | * different rates to send out the frame, at each | |
3d2bc103 HS |
400 | * retry it lowered the rate 1 step except when the |
401 | * lowest rate was used. | |
92ed48e5 BP |
402 | */ |
403 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
404 | tx_info->status.rates[i].idx = rate_idx - i; | |
405 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
406 | |
407 | if (rate_idx - i == 0) { | |
408 | /* | |
409 | * The lowest rate (index 0) was used until the | |
410 | * number of max retries was reached. | |
411 | */ | |
412 | tx_info->status.rates[i].count = retry_rates - i; | |
413 | i++; | |
414 | break; | |
415 | } | |
92ed48e5 BP |
416 | tx_info->status.rates[i].count = 1; |
417 | } | |
2e27cff8 | 418 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 419 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 420 | |
e039fa4a | 421 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 422 | if (success) |
e039fa4a | 423 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 424 | else |
181d6902 | 425 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
426 | } |
427 | ||
1df90809 HS |
428 | /* |
429 | * Every single frame has it's own tx status, hence report | |
430 | * every frame as ampdu of size 1. | |
431 | * | |
432 | * TODO: if we can find out how many frames were aggregated | |
433 | * by the hw we could provide the real ampdu_len to mac80211 | |
434 | * which would allow the rc algorithm to better decide on | |
435 | * which rates are suitable. | |
436 | */ | |
f16d2db7 HS |
437 | if (test_bit(TXDONE_AMPDU, &txdesc->flags) || |
438 | tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
1df90809 HS |
439 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; |
440 | tx_info->status.ampdu_len = 1; | |
441 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
ab9d6e4f SG |
442 | |
443 | if (!success) | |
444 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1df90809 HS |
445 | } |
446 | ||
e6a9854b | 447 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 448 | if (success) |
181d6902 | 449 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 450 | else |
181d6902 | 451 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
452 | } |
453 | ||
454 | /* | |
7351c6bd JB |
455 | * Only send the status report to mac80211 when it's a frame |
456 | * that originated in mac80211. If this was a extra frame coming | |
457 | * through a mac80211 library call (RTS/CTS) then we should not | |
458 | * send the status report back. | |
95ea3627 | 459 | */ |
20ed3166 | 460 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
7dab73b3 | 461 | if (test_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags)) |
20ed3166 JS |
462 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
463 | else | |
464 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); | |
465 | } else | |
78e256c9 | 466 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
467 | |
468 | /* | |
469 | * Make this entry available for reuse. | |
470 | */ | |
95ea3627 | 471 | entry->skb = NULL; |
d74f5ba4 ID |
472 | entry->flags = 0; |
473 | ||
798b7adb | 474 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 475 | |
75256f03 | 476 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
d74f5ba4 ID |
477 | |
478 | /* | |
479 | * If the data queue was below the threshold before the txdone | |
480 | * handler we must make sure the packet queue in the mac80211 stack | |
3780d038 SG |
481 | * is reenabled when the txdone handler has finished. This has to be |
482 | * serialized with rt2x00mac_tx(), otherwise we can wake up queue | |
483 | * before it was stopped. | |
d74f5ba4 | 484 | */ |
3780d038 | 485 | spin_lock_bh(&entry->queue->tx_lock); |
d74f5ba4 | 486 | if (!rt2x00queue_threshold(entry->queue)) |
0b7fde54 | 487 | rt2x00queue_unpause_queue(entry->queue); |
3780d038 | 488 | spin_unlock_bh(&entry->queue->tx_lock); |
95ea3627 ID |
489 | } |
490 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
3392bece ID |
491 | |
492 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) | |
493 | { | |
494 | struct txdone_entry_desc txdesc; | |
495 | ||
496 | txdesc.flags = 0; | |
497 | __set_bit(status, &txdesc.flags); | |
498 | txdesc.retry = 0; | |
499 | ||
500 | rt2x00lib_txdone(entry, &txdesc); | |
501 | } | |
502 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); | |
95ea3627 | 503 | |
1c0bcf89 ID |
504 | static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie) |
505 | { | |
506 | struct ieee80211_mgmt *mgmt = (void *)data; | |
507 | u8 *pos, *end; | |
508 | ||
509 | pos = (u8 *)mgmt->u.beacon.variable; | |
510 | end = data + len; | |
511 | while (pos < end) { | |
512 | if (pos + 2 + pos[1] > end) | |
513 | return NULL; | |
514 | ||
515 | if (pos[0] == ie) | |
516 | return pos; | |
517 | ||
518 | pos += 2 + pos[1]; | |
519 | } | |
520 | ||
521 | return NULL; | |
522 | } | |
523 | ||
ed66ba47 GW |
524 | static void rt2x00lib_sleep(struct work_struct *work) |
525 | { | |
526 | struct rt2x00_dev *rt2x00dev = | |
527 | container_of(work, struct rt2x00_dev, sleep_work); | |
528 | ||
529 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
530 | return; | |
531 | ||
532 | /* | |
533 | * Check again is powersaving is enabled, to prevent races from delayed | |
534 | * work execution. | |
535 | */ | |
536 | if (!test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) | |
537 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, | |
538 | IEEE80211_CONF_CHANGE_PS); | |
539 | } | |
540 | ||
84e9e8eb HS |
541 | static void rt2x00lib_rxdone_check_ba(struct rt2x00_dev *rt2x00dev, |
542 | struct sk_buff *skb, | |
543 | struct rxdone_entry_desc *rxdesc) | |
544 | { | |
545 | struct rt2x00_bar_list_entry *entry; | |
546 | struct ieee80211_bar *ba = (void *)skb->data; | |
547 | ||
548 | if (likely(!ieee80211_is_back(ba->frame_control))) | |
549 | return; | |
550 | ||
551 | if (rxdesc->size < sizeof(*ba) + FCS_LEN) | |
552 | return; | |
553 | ||
554 | rcu_read_lock(); | |
555 | list_for_each_entry_rcu(entry, &rt2x00dev->bar_list, list) { | |
556 | ||
557 | if (ba->start_seq_num != entry->start_seq_num) | |
558 | continue; | |
559 | ||
560 | #define TID_CHECK(a, b) ( \ | |
561 | ((a) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)) == \ | |
562 | ((b) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK))) \ | |
563 | ||
564 | if (!TID_CHECK(ba->control, entry->control)) | |
565 | continue; | |
566 | ||
567 | #undef TID_CHECK | |
568 | ||
7367d0b5 | 569 | if (!ether_addr_equal(ba->ra, entry->ta)) |
84e9e8eb HS |
570 | continue; |
571 | ||
7367d0b5 | 572 | if (!ether_addr_equal(ba->ta, entry->ra)) |
84e9e8eb HS |
573 | continue; |
574 | ||
575 | /* Mark BAR since we received the according BA */ | |
576 | spin_lock_bh(&rt2x00dev->bar_list_lock); | |
577 | entry->block_acked = 1; | |
578 | spin_unlock_bh(&rt2x00dev->bar_list_lock); | |
579 | break; | |
580 | } | |
581 | rcu_read_unlock(); | |
582 | ||
583 | } | |
584 | ||
1c0bcf89 ID |
585 | static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev, |
586 | struct sk_buff *skb, | |
587 | struct rxdone_entry_desc *rxdesc) | |
588 | { | |
589 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
590 | struct ieee80211_tim_ie *tim_ie; | |
591 | u8 *tim; | |
592 | u8 tim_len; | |
593 | bool cam; | |
594 | ||
595 | /* If this is not a beacon, or if mac80211 has no powersaving | |
596 | * configured, or if the device is already in powersaving mode | |
597 | * we can exit now. */ | |
598 | if (likely(!ieee80211_is_beacon(hdr->frame_control) || | |
599 | !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS))) | |
600 | return; | |
601 | ||
602 | /* min. beacon length + FCS_LEN */ | |
603 | if (skb->len <= 40 + FCS_LEN) | |
604 | return; | |
605 | ||
606 | /* and only beacons from the associated BSSID, please */ | |
607 | if (!(rxdesc->dev_flags & RXDONE_MY_BSS) || | |
608 | !rt2x00dev->aid) | |
609 | return; | |
610 | ||
611 | rt2x00dev->last_beacon = jiffies; | |
612 | ||
613 | tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM); | |
614 | if (!tim) | |
615 | return; | |
616 | ||
617 | if (tim[1] < sizeof(*tim_ie)) | |
618 | return; | |
619 | ||
620 | tim_len = tim[1]; | |
621 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; | |
622 | ||
623 | /* Check whenever the PHY can be turned off again. */ | |
624 | ||
625 | /* 1. What about buffered unicast traffic for our AID? */ | |
626 | cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid); | |
627 | ||
628 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ | |
629 | cam |= (tim_ie->bitmap_ctrl & 0x01); | |
630 | ||
631 | if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) | |
ed66ba47 | 632 | queue_work(rt2x00dev->workqueue, &rt2x00dev->sleep_work); |
1c0bcf89 ID |
633 | } |
634 | ||
35f00cfc ID |
635 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
636 | struct rxdone_entry_desc *rxdesc) | |
637 | { | |
638 | struct ieee80211_supported_band *sband; | |
639 | const struct rt2x00_rate *rate; | |
640 | unsigned int i; | |
3590eea4 ID |
641 | int signal = rxdesc->signal; |
642 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
643 | ||
644 | switch (rxdesc->rate_mode) { | |
645 | case RATE_MODE_CCK: | |
646 | case RATE_MODE_OFDM: | |
647 | /* | |
648 | * For non-HT rates the MCS value needs to contain the | |
649 | * actually used rate modulation (CCK or OFDM). | |
650 | */ | |
651 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
652 | signal = RATE_MCS(rxdesc->rate_mode, signal); | |
653 | ||
654 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
655 | for (i = 0; i < sband->n_bitrates; i++) { | |
656 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
657 | if (((type == RXDONE_SIGNAL_PLCP) && | |
658 | (rate->plcp == signal)) || | |
659 | ((type == RXDONE_SIGNAL_BITRATE) && | |
660 | (rate->bitrate == signal)) || | |
661 | ((type == RXDONE_SIGNAL_MCS) && | |
662 | (rate->mcs == signal))) { | |
663 | return i; | |
664 | } | |
35f00cfc | 665 | } |
3590eea4 ID |
666 | break; |
667 | case RATE_MODE_HT_MIX: | |
668 | case RATE_MODE_HT_GREENFIELD: | |
669 | if (signal >= 0 && signal <= 76) | |
670 | return signal; | |
671 | break; | |
672 | default: | |
673 | break; | |
35f00cfc ID |
674 | } |
675 | ||
ec9c4989 JP |
676 | rt2x00_warn(rt2x00dev, "Frame received with unrecognized signal, mode=0x%.4x, signal=0x%.4x, type=%d\n", |
677 | rxdesc->rate_mode, signal, type); | |
35f00cfc ID |
678 | return 0; |
679 | } | |
680 | ||
88211021 | 681 | void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp) |
95ea3627 | 682 | { |
fa69560f | 683 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
c4da0048 GW |
684 | struct rxdone_entry_desc rxdesc; |
685 | struct sk_buff *skb; | |
e5ef5bad | 686 | struct ieee80211_rx_status *rx_status; |
2bb057d0 | 687 | unsigned int header_length; |
35f00cfc | 688 | int rate_idx; |
7e613e16 | 689 | |
070192dd ID |
690 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
691 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
692 | goto submit_entry; | |
693 | ||
7e613e16 ID |
694 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
695 | goto submit_entry; | |
696 | ||
c4da0048 GW |
697 | /* |
698 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
699 | * received frame and reuse the existing buffer. | |
700 | */ | |
88211021 | 701 | skb = rt2x00queue_alloc_rxskb(entry, gfp); |
c4da0048 | 702 | if (!skb) |
1550c8ef | 703 | goto submit_entry; |
c4da0048 GW |
704 | |
705 | /* | |
706 | * Unmap the skb. | |
707 | */ | |
fa69560f | 708 | rt2x00queue_unmap_skb(entry); |
c4da0048 GW |
709 | |
710 | /* | |
711 | * Extract the RXD details. | |
712 | */ | |
713 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
714 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 715 | |
7f503fc4 SG |
716 | /* |
717 | * Check for valid size in case we get corrupted descriptor from | |
718 | * hardware. | |
719 | */ | |
720 | if (unlikely(rxdesc.size == 0 || | |
721 | rxdesc.size > entry->queue->data_size)) { | |
ec9c4989 JP |
722 | rt2x00_err(rt2x00dev, "Wrong frame size %d max %d\n", |
723 | rxdesc.size, entry->queue->data_size); | |
7f503fc4 SG |
724 | dev_kfree_skb(entry->skb); |
725 | goto renew_skb; | |
726 | } | |
727 | ||
239c249d GW |
728 | /* |
729 | * The data behind the ieee80211 header must be | |
a9f853dd | 730 | * aligned on a 4 byte boundary. |
239c249d | 731 | */ |
2bb057d0 | 732 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 733 | |
2bb057d0 ID |
734 | /* |
735 | * Hardware might have stripped the IV/EIV/ICV data, | |
736 | * in that case it is possible that the data was | |
3ad2f3fb | 737 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
738 | * in which case we should reinsert the data into the frame. |
739 | */ | |
74415edb | 740 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 741 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 742 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 743 | &rxdesc); |
b7340833 GW |
744 | else if (header_length && |
745 | (rxdesc.size > header_length) && | |
746 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 747 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
239c249d | 748 | |
1398d458 AB |
749 | /* Trim buffer to correct size */ |
750 | skb_trim(entry->skb, rxdesc.size); | |
751 | ||
95ea3627 | 752 | /* |
3590eea4 | 753 | * Translate the signal to the correct bitrate index. |
95ea3627 | 754 | */ |
3590eea4 ID |
755 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
756 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || | |
757 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) | |
35f00cfc | 758 | rxdesc.flags |= RX_FLAG_HT; |
866a0503 | 759 | |
1c0bcf89 ID |
760 | /* |
761 | * Check if this is a beacon, and more frames have been | |
762 | * buffered while we were in powersaving mode. | |
763 | */ | |
764 | rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc); | |
765 | ||
84e9e8eb HS |
766 | /* |
767 | * Check for incoming BlockAcks to match to the BlockAckReqs | |
768 | * we've send out. | |
769 | */ | |
770 | rt2x00lib_rxdone_check_ba(rt2x00dev, entry->skb, &rxdesc); | |
771 | ||
61af43c5 | 772 | /* |
84e3196f | 773 | * Update extra components |
61af43c5 | 774 | */ |
84e3196f ID |
775 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
776 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
e5ef5bad | 777 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
69f81a2c | 778 | |
e5ef5bad ID |
779 | /* |
780 | * Initialize RX status information, and send frame | |
781 | * to mac80211. | |
782 | */ | |
783 | rx_status = IEEE80211_SKB_RXCB(entry->skb); | |
028014c8 GJ |
784 | |
785 | /* Ensure that all fields of rx_status are initialized | |
786 | * properly. The skb->cb array was used for driver | |
787 | * specific informations, so rx_status might contain | |
788 | * garbage. | |
789 | */ | |
790 | memset(rx_status, 0, sizeof(*rx_status)); | |
791 | ||
ae73e58e | 792 | rx_status->mactime = rxdesc.timestamp; |
e5ef5bad ID |
793 | rx_status->band = rt2x00dev->curr_band; |
794 | rx_status->freq = rt2x00dev->curr_freq; | |
35f00cfc | 795 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
796 | rx_status->signal = rxdesc.rssi; |
797 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 798 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 | 799 | |
7e613e16 | 800 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
c4da0048 | 801 | |
7f503fc4 | 802 | renew_skb: |
c4da0048 GW |
803 | /* |
804 | * Replace the skb with the freshly allocated one. | |
805 | */ | |
806 | entry->skb = skb; | |
d74f5ba4 | 807 | |
7e613e16 | 808 | submit_entry: |
070192dd | 809 | entry->flags = 0; |
75256f03 | 810 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
070192dd | 811 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
64e7d723 | 812 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
070192dd | 813 | rt2x00dev->ops->lib->clear_entry(entry); |
95ea3627 ID |
814 | } |
815 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
816 | ||
95ea3627 ID |
817 | /* |
818 | * Driver initialization handlers. | |
819 | */ | |
70e2fed4 ID |
820 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
821 | { | |
3d8606a6 | 822 | .flags = DEV_RATE_CCK, |
70e2fed4 | 823 | .bitrate = 10, |
aa776721 | 824 | .ratemask = BIT(0), |
70e2fed4 | 825 | .plcp = 0x00, |
35f00cfc | 826 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
827 | }, |
828 | { | |
3d8606a6 | 829 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 830 | .bitrate = 20, |
aa776721 | 831 | .ratemask = BIT(1), |
70e2fed4 | 832 | .plcp = 0x01, |
35f00cfc | 833 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
834 | }, |
835 | { | |
3d8606a6 | 836 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 837 | .bitrate = 55, |
aa776721 | 838 | .ratemask = BIT(2), |
70e2fed4 | 839 | .plcp = 0x02, |
35f00cfc | 840 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
841 | }, |
842 | { | |
3d8606a6 | 843 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 844 | .bitrate = 110, |
aa776721 | 845 | .ratemask = BIT(3), |
70e2fed4 | 846 | .plcp = 0x03, |
35f00cfc | 847 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
848 | }, |
849 | { | |
3d8606a6 | 850 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 851 | .bitrate = 60, |
aa776721 | 852 | .ratemask = BIT(4), |
70e2fed4 | 853 | .plcp = 0x0b, |
35f00cfc | 854 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
855 | }, |
856 | { | |
857 | .flags = DEV_RATE_OFDM, | |
858 | .bitrate = 90, | |
aa776721 | 859 | .ratemask = BIT(5), |
70e2fed4 | 860 | .plcp = 0x0f, |
35f00cfc | 861 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
862 | }, |
863 | { | |
3d8606a6 | 864 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 865 | .bitrate = 120, |
aa776721 | 866 | .ratemask = BIT(6), |
70e2fed4 | 867 | .plcp = 0x0a, |
35f00cfc | 868 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
869 | }, |
870 | { | |
871 | .flags = DEV_RATE_OFDM, | |
872 | .bitrate = 180, | |
aa776721 | 873 | .ratemask = BIT(7), |
70e2fed4 | 874 | .plcp = 0x0e, |
35f00cfc | 875 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
876 | }, |
877 | { | |
3d8606a6 | 878 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 879 | .bitrate = 240, |
aa776721 | 880 | .ratemask = BIT(8), |
70e2fed4 | 881 | .plcp = 0x09, |
35f00cfc | 882 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
883 | }, |
884 | { | |
885 | .flags = DEV_RATE_OFDM, | |
886 | .bitrate = 360, | |
aa776721 | 887 | .ratemask = BIT(9), |
70e2fed4 | 888 | .plcp = 0x0d, |
35f00cfc | 889 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
890 | }, |
891 | { | |
892 | .flags = DEV_RATE_OFDM, | |
893 | .bitrate = 480, | |
aa776721 | 894 | .ratemask = BIT(10), |
70e2fed4 | 895 | .plcp = 0x08, |
35f00cfc | 896 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
897 | }, |
898 | { | |
899 | .flags = DEV_RATE_OFDM, | |
900 | .bitrate = 540, | |
aa776721 | 901 | .ratemask = BIT(11), |
70e2fed4 | 902 | .plcp = 0x0c, |
35f00cfc | 903 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
904 | }, |
905 | }; | |
906 | ||
95ea3627 ID |
907 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
908 | const int channel, const int tx_power, | |
909 | const int value) | |
910 | { | |
59eb21a6 BR |
911 | /* XXX: this assumption about the band is wrong for 802.11j */ |
912 | entry->band = channel <= 14 ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
913 | entry->center_freq = ieee80211_channel_to_frequency(channel, | |
914 | entry->band); | |
8318d78a JB |
915 | entry->hw_value = value; |
916 | entry->max_power = tx_power; | |
917 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
918 | } |
919 | ||
920 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 921 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 922 | { |
70e2fed4 ID |
923 | entry->flags = 0; |
924 | entry->bitrate = rate->bitrate; | |
c2361bae | 925 | entry->hw_value = index; |
3ea96463 | 926 | entry->hw_value_short = index; |
70e2fed4 | 927 | |
3ea96463 | 928 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 929 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
930 | } |
931 | ||
932 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
933 | struct hw_mode_spec *spec) | |
934 | { | |
935 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
936 | struct ieee80211_channel *channels; |
937 | struct ieee80211_rate *rates; | |
31562e80 | 938 | unsigned int num_rates; |
95ea3627 | 939 | unsigned int i; |
95ea3627 | 940 | |
31562e80 ID |
941 | num_rates = 0; |
942 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
943 | num_rates += 4; | |
944 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
945 | num_rates += 8; | |
95ea3627 | 946 | |
839fafbe | 947 | channels = kcalloc(spec->num_channels, sizeof(*channels), GFP_KERNEL); |
95ea3627 | 948 | if (!channels) |
8318d78a | 949 | return -ENOMEM; |
95ea3627 | 950 | |
839fafbe | 951 | rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL); |
95ea3627 ID |
952 | if (!rates) |
953 | goto exit_free_channels; | |
954 | ||
955 | /* | |
956 | * Initialize Rate list. | |
957 | */ | |
31562e80 | 958 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 959 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
960 | |
961 | /* | |
962 | * Initialize Channel list. | |
963 | */ | |
964 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 965 | rt2x00lib_channel(&channels[i], |
8c5e7a5f | 966 | spec->channels[i].channel, |
8d1331b3 | 967 | spec->channels_info[i].max_power, i); |
95ea3627 ID |
968 | } |
969 | ||
970 | /* | |
31562e80 | 971 | * Intitialize 802.11b, 802.11g |
95ea3627 | 972 | * Rates: CCK, OFDM. |
8318d78a | 973 | * Channels: 2.4 GHz |
95ea3627 | 974 | */ |
47ac2683 | 975 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
976 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
977 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
978 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
979 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
980 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
981 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
982 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
983 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
984 | } |
985 | ||
986 | /* | |
987 | * Intitialize 802.11a | |
988 | * Rates: OFDM. | |
989 | * Channels: OFDM, UNII, HiperLAN2. | |
990 | */ | |
47ac2683 | 991 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
992 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
993 | spec->num_channels - 14; | |
994 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
995 | num_rates - 4; | |
996 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
997 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
998 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
999 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
1000 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
1001 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
1002 | } |
1003 | ||
95ea3627 ID |
1004 | return 0; |
1005 | ||
8318d78a | 1006 | exit_free_channels: |
95ea3627 | 1007 | kfree(channels); |
ec9c4989 | 1008 | rt2x00_err(rt2x00dev, "Allocation ieee80211 modes failed\n"); |
95ea3627 ID |
1009 | return -ENOMEM; |
1010 | } | |
1011 | ||
1012 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
1013 | { | |
0262ab0d | 1014 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
1015 | ieee80211_unregister_hw(rt2x00dev->hw); |
1016 | ||
8318d78a JB |
1017 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
1018 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
1019 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
1020 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
1021 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 1022 | } |
8c5e7a5f ID |
1023 | |
1024 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
1025 | } |
1026 | ||
1027 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
1028 | { | |
1029 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
1030 | int status; | |
1031 | ||
0262ab0d ID |
1032 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
1033 | return 0; | |
1034 | ||
95ea3627 ID |
1035 | /* |
1036 | * Initialize HW modes. | |
1037 | */ | |
1038 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
1039 | if (status) | |
1040 | return status; | |
1041 | ||
61448f88 GW |
1042 | /* |
1043 | * Initialize HW fields. | |
1044 | */ | |
1045 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
1046 | ||
e6218cc4 GW |
1047 | /* |
1048 | * Initialize extra TX headroom required. | |
1049 | */ | |
7a4a77b7 GW |
1050 | rt2x00dev->hw->extra_tx_headroom = |
1051 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
5616a6ef | 1052 | rt2x00dev->extra_tx_headroom); |
7a4a77b7 GW |
1053 | |
1054 | /* | |
1055 | * Take TX headroom required for alignment into account. | |
1056 | */ | |
7dab73b3 | 1057 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
7a4a77b7 | 1058 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; |
7dab73b3 | 1059 | else if (test_bit(REQUIRE_DMA, &rt2x00dev->cap_flags)) |
7a4a77b7 | 1060 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; |
e6218cc4 | 1061 | |
b4943d81 HS |
1062 | /* |
1063 | * Tell mac80211 about the size of our private STA structure. | |
1064 | */ | |
1065 | rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta); | |
1066 | ||
96c3da7d HS |
1067 | /* |
1068 | * Allocate tx status FIFO for driver use. | |
1069 | */ | |
7dab73b3 | 1070 | if (test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags)) { |
96c3da7d | 1071 | /* |
f78987cf HS |
1072 | * Allocate the txstatus fifo. In the worst case the tx |
1073 | * status fifo has to hold the tx status of all entries | |
1074 | * in all tx queues. Hence, calculate the kfifo size as | |
1075 | * tx_queues * entry_num and round up to the nearest | |
1076 | * power of 2. | |
96c3da7d | 1077 | */ |
f78987cf HS |
1078 | int kfifo_size = |
1079 | roundup_pow_of_two(rt2x00dev->ops->tx_queues * | |
54ca1933 | 1080 | rt2x00dev->tx->limit * |
f78987cf HS |
1081 | sizeof(u32)); |
1082 | ||
1083 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size, | |
96c3da7d HS |
1084 | GFP_KERNEL); |
1085 | if (status) | |
1086 | return status; | |
96c3da7d HS |
1087 | } |
1088 | ||
c5c65761 HS |
1089 | /* |
1090 | * Initialize tasklets if used by the driver. Tasklets are | |
1091 | * disabled until the interrupts are turned on. The driver | |
1092 | * has to handle that. | |
1093 | */ | |
1094 | #define RT2X00_TASKLET_INIT(taskletname) \ | |
1095 | if (rt2x00dev->ops->lib->taskletname) { \ | |
1096 | tasklet_init(&rt2x00dev->taskletname, \ | |
1097 | rt2x00dev->ops->lib->taskletname, \ | |
1098 | (unsigned long)rt2x00dev); \ | |
c5c65761 HS |
1099 | } |
1100 | ||
c8e15a1e | 1101 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
c5c65761 HS |
1102 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
1103 | RT2X00_TASKLET_INIT(tbtt_tasklet); | |
1104 | RT2X00_TASKLET_INIT(rxdone_tasklet); | |
1105 | RT2X00_TASKLET_INIT(autowake_tasklet); | |
1106 | ||
1107 | #undef RT2X00_TASKLET_INIT | |
1108 | ||
95ea3627 ID |
1109 | /* |
1110 | * Register HW. | |
1111 | */ | |
1112 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 1113 | if (status) |
95ea3627 | 1114 | return status; |
95ea3627 | 1115 | |
0262ab0d | 1116 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
1117 | |
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * Initialization/uninitialization handlers. | |
1123 | */ | |
e37ea213 | 1124 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 1125 | { |
0262ab0d | 1126 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
1127 | return; |
1128 | ||
1129 | /* | |
1682fe6d | 1130 | * Unregister extra components. |
95ea3627 ID |
1131 | */ |
1132 | rt2x00rfkill_unregister(rt2x00dev); | |
1133 | ||
1134 | /* | |
1135 | * Allow the HW to uninitialize. | |
1136 | */ | |
1137 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
1138 | ||
1139 | /* | |
181d6902 | 1140 | * Free allocated queue entries. |
95ea3627 | 1141 | */ |
181d6902 | 1142 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
1143 | } |
1144 | ||
e37ea213 | 1145 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
1146 | { |
1147 | int status; | |
1148 | ||
0262ab0d | 1149 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
1150 | return 0; |
1151 | ||
1152 | /* | |
181d6902 | 1153 | * Allocate all queue entries. |
95ea3627 | 1154 | */ |
181d6902 ID |
1155 | status = rt2x00queue_initialize(rt2x00dev); |
1156 | if (status) | |
95ea3627 | 1157 | return status; |
95ea3627 ID |
1158 | |
1159 | /* | |
1160 | * Initialize the device. | |
1161 | */ | |
1162 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
1163 | if (status) { |
1164 | rt2x00queue_uninitialize(rt2x00dev); | |
1165 | return status; | |
1166 | } | |
95ea3627 | 1167 | |
0262ab0d | 1168 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 | 1169 | |
95ea3627 | 1170 | return 0; |
95ea3627 ID |
1171 | } |
1172 | ||
e37ea213 ID |
1173 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
1174 | { | |
1175 | int retval; | |
1176 | ||
0262ab0d | 1177 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1178 | return 0; |
1179 | ||
1180 | /* | |
1181 | * If this is the first interface which is added, | |
1182 | * we should load the firmware now. | |
1183 | */ | |
9404ef34 ID |
1184 | retval = rt2x00lib_load_firmware(rt2x00dev); |
1185 | if (retval) | |
1186 | return retval; | |
e37ea213 ID |
1187 | |
1188 | /* | |
1189 | * Initialize the device. | |
1190 | */ | |
1191 | retval = rt2x00lib_initialize(rt2x00dev); | |
1192 | if (retval) | |
1193 | return retval; | |
1194 | ||
6bb40dd1 ID |
1195 | rt2x00dev->intf_ap_count = 0; |
1196 | rt2x00dev->intf_sta_count = 0; | |
1197 | rt2x00dev->intf_associated = 0; | |
1198 | ||
bdfa500b ID |
1199 | /* Enable the radio */ |
1200 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1f0280cb | 1201 | if (retval) |
bdfa500b | 1202 | return retval; |
bdfa500b | 1203 | |
0262ab0d | 1204 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
1205 | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1210 | { | |
0262ab0d | 1211 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1212 | return; |
1213 | ||
1214 | /* | |
1215 | * Perhaps we can add something smarter here, | |
1216 | * but for now just disabling the radio should do. | |
1217 | */ | |
1218 | rt2x00lib_disable_radio(rt2x00dev); | |
1219 | ||
6bb40dd1 ID |
1220 | rt2x00dev->intf_ap_count = 0; |
1221 | rt2x00dev->intf_sta_count = 0; | |
1222 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
1223 | } |
1224 | ||
55d2e9da GW |
1225 | static inline void rt2x00lib_set_if_combinations(struct rt2x00_dev *rt2x00dev) |
1226 | { | |
1227 | struct ieee80211_iface_limit *if_limit; | |
1228 | struct ieee80211_iface_combination *if_combination; | |
1229 | ||
f5685ba6 HS |
1230 | if (rt2x00dev->ops->max_ap_intf < 2) |
1231 | return; | |
1232 | ||
55d2e9da GW |
1233 | /* |
1234 | * Build up AP interface limits structure. | |
1235 | */ | |
1236 | if_limit = &rt2x00dev->if_limits_ap; | |
1237 | if_limit->max = rt2x00dev->ops->max_ap_intf; | |
6ef9e2f6 FF |
1238 | if_limit->types = BIT(NL80211_IFTYPE_AP); |
1239 | #ifdef CONFIG_MAC80211_MESH | |
1240 | if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT); | |
1241 | #endif | |
55d2e9da GW |
1242 | |
1243 | /* | |
1244 | * Build up AP interface combinations structure. | |
1245 | */ | |
1246 | if_combination = &rt2x00dev->if_combinations[IF_COMB_AP]; | |
1247 | if_combination->limits = if_limit; | |
1248 | if_combination->n_limits = 1; | |
1249 | if_combination->max_interfaces = if_limit->max; | |
1250 | if_combination->num_different_channels = 1; | |
1251 | ||
1252 | /* | |
1253 | * Finally, specify the possible combinations to mac80211. | |
1254 | */ | |
1255 | rt2x00dev->hw->wiphy->iface_combinations = rt2x00dev->if_combinations; | |
1256 | rt2x00dev->hw->wiphy->n_iface_combinations = 1; | |
1257 | } | |
1258 | ||
5616a6ef GJ |
1259 | static unsigned int rt2x00dev_extra_tx_headroom(struct rt2x00_dev *rt2x00dev) |
1260 | { | |
1261 | if (WARN_ON(!rt2x00dev->tx)) | |
1262 | return 0; | |
1263 | ||
1264 | if (rt2x00_is_usb(rt2x00dev)) | |
1265 | return rt2x00dev->tx[0].winfo_size + rt2x00dev->tx[0].desc_size; | |
1266 | ||
1267 | return rt2x00dev->tx[0].winfo_size; | |
1268 | } | |
1269 | ||
95ea3627 ID |
1270 | /* |
1271 | * driver allocation handlers. | |
1272 | */ | |
95ea3627 ID |
1273 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1274 | { | |
1275 | int retval = -ENOMEM; | |
1276 | ||
55d2e9da GW |
1277 | /* |
1278 | * Set possible interface combinations. | |
1279 | */ | |
1280 | rt2x00lib_set_if_combinations(rt2x00dev); | |
1281 | ||
1ebbc485 GW |
1282 | /* |
1283 | * Allocate the driver data memory, if necessary. | |
1284 | */ | |
1285 | if (rt2x00dev->ops->drv_data_size > 0) { | |
1286 | rt2x00dev->drv_data = kzalloc(rt2x00dev->ops->drv_data_size, | |
1287 | GFP_KERNEL); | |
1288 | if (!rt2x00dev->drv_data) { | |
1289 | retval = -ENOMEM; | |
1290 | goto exit; | |
1291 | } | |
1292 | } | |
1293 | ||
c5c65761 | 1294 | spin_lock_init(&rt2x00dev->irqmask_lock); |
8ff48a8b | 1295 | mutex_init(&rt2x00dev->csr_mutex); |
84e9e8eb HS |
1296 | INIT_LIST_HEAD(&rt2x00dev->bar_list); |
1297 | spin_lock_init(&rt2x00dev->bar_list_lock); | |
8ff48a8b | 1298 | |
66f84d65 SC |
1299 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
1300 | ||
6bb40dd1 ID |
1301 | /* |
1302 | * Make room for rt2x00_intf inside the per-interface | |
1303 | * structure ieee80211_vif. | |
1304 | */ | |
1305 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1306 | ||
6c50f945 HS |
1307 | /* |
1308 | * rt2x00 devices can only use the last n bits of the MAC address | |
1309 | * for virtual interfaces. | |
1310 | */ | |
1311 | rt2x00dev->hw->wiphy->addr_mask[ETH_ALEN - 1] = | |
1312 | (rt2x00dev->ops->max_ap_intf - 1); | |
1313 | ||
9acd56d3 | 1314 | /* |
0439f536 | 1315 | * Initialize work. |
9acd56d3 | 1316 | */ |
0439f536 | 1317 | rt2x00dev->workqueue = |
d8537548 | 1318 | alloc_ordered_workqueue("%s", 0, wiphy_name(rt2x00dev->hw->wiphy)); |
0439f536 ID |
1319 | if (!rt2x00dev->workqueue) { |
1320 | retval = -ENOMEM; | |
1321 | goto exit; | |
1322 | } | |
1323 | ||
9acd56d3 | 1324 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
1c0bcf89 | 1325 | INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup); |
ed66ba47 | 1326 | INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep); |
9acd56d3 | 1327 | |
95ea3627 ID |
1328 | /* |
1329 | * Let the driver probe the device to detect the capabilities. | |
1330 | */ | |
1331 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1332 | if (retval) { | |
ec9c4989 | 1333 | rt2x00_err(rt2x00dev, "Failed to allocate device\n"); |
95ea3627 ID |
1334 | goto exit; |
1335 | } | |
1336 | ||
95ea3627 | 1337 | /* |
181d6902 | 1338 | * Allocate queue array. |
95ea3627 | 1339 | */ |
181d6902 | 1340 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1341 | if (retval) |
1342 | goto exit; | |
1343 | ||
5616a6ef GJ |
1344 | /* Cache TX headroom value */ |
1345 | rt2x00dev->extra_tx_headroom = rt2x00dev_extra_tx_headroom(rt2x00dev); | |
1346 | ||
e9e43303 GJ |
1347 | /* |
1348 | * Determine which operating modes are supported, all modes | |
1349 | * which require beaconing, depend on the availability of | |
1350 | * beacon entries. | |
1351 | */ | |
1352 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
56e82563 | 1353 | if (rt2x00dev->bcn->limit > 0) |
e9e43303 GJ |
1354 | rt2x00dev->hw->wiphy->interface_modes |= |
1355 | BIT(NL80211_IFTYPE_ADHOC) | | |
1356 | BIT(NL80211_IFTYPE_AP) | | |
1357 | #ifdef CONFIG_MAC80211_MESH | |
1358 | BIT(NL80211_IFTYPE_MESH_POINT) | | |
1359 | #endif | |
1360 | BIT(NL80211_IFTYPE_WDS); | |
1361 | ||
1362 | rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
1363 | ||
95ea3627 ID |
1364 | /* |
1365 | * Initialize ieee80211 structure. | |
1366 | */ | |
1367 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1368 | if (retval) { | |
ec9c4989 | 1369 | rt2x00_err(rt2x00dev, "Failed to initialize hw\n"); |
95ea3627 ID |
1370 | goto exit; |
1371 | } | |
1372 | ||
a9450b70 | 1373 | /* |
1682fe6d | 1374 | * Register extra components. |
a9450b70 | 1375 | */ |
84e3196f | 1376 | rt2x00link_register(rt2x00dev); |
a9450b70 | 1377 | rt2x00leds_register(rt2x00dev); |
95ea3627 | 1378 | rt2x00debug_register(rt2x00dev); |
e2bc7c5f | 1379 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
1380 | |
1381 | return 0; | |
1382 | ||
1383 | exit: | |
1384 | rt2x00lib_remove_dev(rt2x00dev); | |
1385 | ||
1386 | return retval; | |
1387 | } | |
1388 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1389 | ||
1390 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1391 | { | |
0262ab0d | 1392 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1393 | |
95ea3627 ID |
1394 | /* |
1395 | * Disable radio. | |
1396 | */ | |
1397 | rt2x00lib_disable_radio(rt2x00dev); | |
1398 | ||
d8cc8926 PR |
1399 | /* |
1400 | * Stop all work. | |
1401 | */ | |
d8cc8926 | 1402 | cancel_work_sync(&rt2x00dev->intf_work); |
3bb42a64 | 1403 | cancel_delayed_work_sync(&rt2x00dev->autowakeup_work); |
ed66ba47 | 1404 | cancel_work_sync(&rt2x00dev->sleep_work); |
37f4ee0b | 1405 | if (rt2x00_is_usb(rt2x00dev)) { |
f421111b | 1406 | hrtimer_cancel(&rt2x00dev->txstatus_timer); |
37f4ee0b SG |
1407 | cancel_work_sync(&rt2x00dev->rxdone_work); |
1408 | cancel_work_sync(&rt2x00dev->txdone_work); | |
1409 | } | |
7be08153 GJ |
1410 | if (rt2x00dev->workqueue) |
1411 | destroy_workqueue(rt2x00dev->workqueue); | |
d8cc8926 | 1412 | |
96c3da7d HS |
1413 | /* |
1414 | * Free the tx status fifo. | |
1415 | */ | |
1416 | kfifo_free(&rt2x00dev->txstatus_fifo); | |
1417 | ||
1418 | /* | |
1419 | * Kill the tx status tasklet. | |
1420 | */ | |
1421 | tasklet_kill(&rt2x00dev->txstatus_tasklet); | |
e1f4e808 ID |
1422 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
1423 | tasklet_kill(&rt2x00dev->tbtt_tasklet); | |
1424 | tasklet_kill(&rt2x00dev->rxdone_tasklet); | |
1425 | tasklet_kill(&rt2x00dev->autowake_tasklet); | |
96c3da7d | 1426 | |
95ea3627 ID |
1427 | /* |
1428 | * Uninitialize device. | |
1429 | */ | |
1430 | rt2x00lib_uninitialize(rt2x00dev); | |
1431 | ||
1432 | /* | |
1682fe6d | 1433 | * Free extra components |
95ea3627 ID |
1434 | */ |
1435 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
1436 | rt2x00leds_unregister(rt2x00dev); |
1437 | ||
95ea3627 ID |
1438 | /* |
1439 | * Free ieee80211_hw memory. | |
1440 | */ | |
1441 | rt2x00lib_remove_hw(rt2x00dev); | |
1442 | ||
1443 | /* | |
1444 | * Free firmware image. | |
1445 | */ | |
1446 | rt2x00lib_free_firmware(rt2x00dev); | |
1447 | ||
1448 | /* | |
181d6902 | 1449 | * Free queue structures. |
95ea3627 | 1450 | */ |
181d6902 | 1451 | rt2x00queue_free(rt2x00dev); |
1ebbc485 GW |
1452 | |
1453 | /* | |
1454 | * Free the driver data. | |
1455 | */ | |
1456 | if (rt2x00dev->drv_data) | |
1457 | kfree(rt2x00dev->drv_data); | |
95ea3627 ID |
1458 | } |
1459 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1460 | ||
1461 | /* | |
1462 | * Device state handlers | |
1463 | */ | |
1464 | #ifdef CONFIG_PM | |
1465 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1466 | { | |
ec9c4989 | 1467 | rt2x00_dbg(rt2x00dev, "Going to sleep\n"); |
066cb637 ID |
1468 | |
1469 | /* | |
07126127 | 1470 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1471 | */ |
07126127 ID |
1472 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1473 | return 0; | |
95ea3627 ID |
1474 | |
1475 | /* | |
07126127 | 1476 | * Cleanup as much as possible. |
95ea3627 | 1477 | */ |
95ea3627 | 1478 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1479 | |
1480 | /* | |
1481 | * Suspend/disable extra components. | |
1482 | */ | |
a9450b70 | 1483 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1484 | rt2x00debug_deregister(rt2x00dev); |
1485 | ||
1486 | /* | |
9896322a ID |
1487 | * Set device mode to sleep for power management, |
1488 | * on some hardware this call seems to consistently fail. | |
1489 | * From the specifications it is hard to tell why it fails, | |
1490 | * and if this is a "bad thing". | |
1491 | * Overall it is safe to just ignore the failure and | |
1492 | * continue suspending. The only downside is that the | |
1493 | * device will not be in optimal power save mode, but with | |
1494 | * the radio and the other components already disabled the | |
1495 | * device is as good as disabled. | |
95ea3627 | 1496 | */ |
07126127 | 1497 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
ec9c4989 | 1498 | rt2x00_warn(rt2x00dev, "Device failed to enter sleep state, continue suspending\n"); |
95ea3627 ID |
1499 | |
1500 | return 0; | |
1501 | } | |
1502 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1503 | ||
1504 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1505 | { | |
ec9c4989 | 1506 | rt2x00_dbg(rt2x00dev, "Waking up\n"); |
95ea3627 ID |
1507 | |
1508 | /* | |
1682fe6d | 1509 | * Restore/enable extra components. |
95ea3627 ID |
1510 | */ |
1511 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1512 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1513 | |
e37ea213 ID |
1514 | /* |
1515 | * We are ready again to receive requests from mac80211. | |
1516 | */ | |
0262ab0d | 1517 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1518 | |
95ea3627 | 1519 | return 0; |
95ea3627 ID |
1520 | } |
1521 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1522 | #endif /* CONFIG_PM */ | |
1523 | ||
1524 | /* | |
1525 | * rt2x00lib module information. | |
1526 | */ | |
1527 | MODULE_AUTHOR(DRV_PROJECT); | |
1528 | MODULE_VERSION(DRV_VERSION); | |
1529 | MODULE_DESCRIPTION("rt2x00 library"); | |
1530 | MODULE_LICENSE("GPL"); |