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95ea3627 | 1 | /* |
7e613e16 ID |
2 | Copyright (C) 2010 Willow Garage <http://www.willowgarage.com> |
3 | Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com> | |
95ea3627 ID |
4 | <http://rt2x00.serialmonkey.com> |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
a05b8c58 | 17 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
95ea3627 ID |
18 | */ |
19 | ||
20 | /* | |
21 | Module: rt2x00lib | |
22 | Abstract: rt2x00 generic device routines. | |
23 | */ | |
24 | ||
95ea3627 ID |
25 | #include <linux/kernel.h> |
26 | #include <linux/module.h> | |
5a0e3ad6 | 27 | #include <linux/slab.h> |
f78987cf | 28 | #include <linux/log2.h> |
95ea3627 ID |
29 | |
30 | #include "rt2x00.h" | |
31 | #include "rt2x00lib.h" | |
32 | ||
18325523 HS |
33 | /* |
34 | * Utility functions. | |
35 | */ | |
36 | u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev, | |
37 | struct ieee80211_vif *vif) | |
38 | { | |
39 | /* | |
40 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
41 | * contains the bss number, see BSS_ID_MASK comments for details. | |
42 | */ | |
43 | if (rt2x00dev->intf_sta_count) | |
44 | return 0; | |
45 | return vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1); | |
46 | } | |
47 | EXPORT_SYMBOL_GPL(rt2x00lib_get_bssidx); | |
48 | ||
95ea3627 ID |
49 | /* |
50 | * Radio control handlers. | |
51 | */ | |
52 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
53 | { | |
54 | int status; | |
55 | ||
56 | /* | |
57 | * Don't enable the radio twice. | |
58 | * And check if the hardware button has been disabled. | |
59 | */ | |
4b9631a4 | 60 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
61 | return 0; |
62 | ||
837e7f24 | 63 | /* |
181d6902 | 64 | * Initialize all data queues. |
837e7f24 | 65 | */ |
798b7adb | 66 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 67 | |
95ea3627 ID |
68 | /* |
69 | * Enable radio. | |
70 | */ | |
a2e1d52a ID |
71 | status = |
72 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
73 | if (status) |
74 | return status; | |
75 | ||
2b08da3f ID |
76 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
77 | ||
a2e1d52a | 78 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 79 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 80 | |
0262ab0d | 81 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
82 | |
83 | /* | |
0b7fde54 | 84 | * Enable queues. |
95ea3627 | 85 | */ |
0b7fde54 | 86 | rt2x00queue_start_queues(rt2x00dev); |
ea175ee2 | 87 | rt2x00link_start_tuner(rt2x00dev); |
9e33a355 | 88 | rt2x00link_start_agc(rt2x00dev); |
7b8a00dc | 89 | if (rt2x00_has_cap_vco_recalibration(rt2x00dev)) |
2e9c43dd | 90 | rt2x00link_start_vcocal(rt2x00dev); |
95ea3627 | 91 | |
c965c74b ID |
92 | /* |
93 | * Start watchdog monitoring. | |
94 | */ | |
95 | rt2x00link_start_watchdog(rt2x00dev); | |
96 | ||
95ea3627 ID |
97 | return 0; |
98 | } | |
99 | ||
100 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
101 | { | |
0262ab0d | 102 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
103 | return; |
104 | ||
c965c74b ID |
105 | /* |
106 | * Stop watchdog monitoring. | |
107 | */ | |
108 | rt2x00link_stop_watchdog(rt2x00dev); | |
109 | ||
95ea3627 | 110 | /* |
0b7fde54 | 111 | * Stop all queues |
95ea3627 | 112 | */ |
9e33a355 | 113 | rt2x00link_stop_agc(rt2x00dev); |
7b8a00dc | 114 | if (rt2x00_has_cap_vco_recalibration(rt2x00dev)) |
2e9c43dd | 115 | rt2x00link_stop_vcocal(rt2x00dev); |
ea175ee2 | 116 | rt2x00link_stop_tuner(rt2x00dev); |
0b7fde54 | 117 | rt2x00queue_stop_queues(rt2x00dev); |
5be65609 | 118 | rt2x00queue_flush_queues(rt2x00dev, true); |
95ea3627 ID |
119 | |
120 | /* | |
121 | * Disable radio. | |
122 | */ | |
123 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 124 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 125 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 126 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
127 | } |
128 | ||
6bb40dd1 ID |
129 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
130 | struct ieee80211_vif *vif) | |
5c58ee51 | 131 | { |
6bb40dd1 ID |
132 | struct rt2x00_dev *rt2x00dev = data; |
133 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 | 134 | |
980dfcb9 ID |
135 | /* |
136 | * It is possible the radio was disabled while the work had been | |
137 | * scheduled. If that happens we should return here immediately, | |
138 | * note that in the spinlock protected area above the delayed_flags | |
139 | * have been cleared correctly. | |
140 | */ | |
0262ab0d | 141 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
142 | return; |
143 | ||
283dafa1 SG |
144 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) { |
145 | mutex_lock(&intf->beacon_skb_mutex); | |
69cf36a4 | 146 | rt2x00queue_update_beacon(rt2x00dev, vif); |
283dafa1 SG |
147 | mutex_unlock(&intf->beacon_skb_mutex); |
148 | } | |
6bb40dd1 | 149 | } |
5c58ee51 | 150 | |
6bb40dd1 ID |
151 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
152 | { | |
153 | struct rt2x00_dev *rt2x00dev = | |
154 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
155 | |
156 | /* | |
6bb40dd1 ID |
157 | * Iterate over each interface and perform the |
158 | * requested configurations. | |
471b3efd | 159 | */ |
6bb40dd1 | 160 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
8b2c9824 | 161 | IEEE80211_IFACE_ITER_RESUME_ALL, |
6bb40dd1 ID |
162 | rt2x00lib_intf_scheduled_iter, |
163 | rt2x00dev); | |
5c58ee51 ID |
164 | } |
165 | ||
1c0bcf89 ID |
166 | static void rt2x00lib_autowakeup(struct work_struct *work) |
167 | { | |
168 | struct rt2x00_dev *rt2x00dev = | |
169 | container_of(work, struct rt2x00_dev, autowakeup_work.work); | |
170 | ||
3bb42a64 SG |
171 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
172 | return; | |
173 | ||
1c0bcf89 | 174 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) |
ec9c4989 | 175 | rt2x00_err(rt2x00dev, "Device failed to wakeup\n"); |
1c0bcf89 ID |
176 | clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags); |
177 | } | |
178 | ||
95ea3627 ID |
179 | /* |
180 | * Interrupt context handlers. | |
181 | */ | |
07896fe2 HS |
182 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
183 | struct ieee80211_vif *vif) | |
184 | { | |
b4089d6d | 185 | struct ieee80211_tx_control control = {}; |
07896fe2 HS |
186 | struct rt2x00_dev *rt2x00dev = data; |
187 | struct sk_buff *skb; | |
188 | ||
189 | /* | |
190 | * Only AP mode interfaces do broad- and multicast buffering | |
191 | */ | |
192 | if (vif->type != NL80211_IFTYPE_AP) | |
193 | return; | |
194 | ||
195 | /* | |
196 | * Send out buffered broad- and multicast frames | |
197 | */ | |
198 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
199 | while (skb) { | |
b4089d6d | 200 | rt2x00mac_tx(rt2x00dev->hw, &control, skb); |
07896fe2 HS |
201 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
202 | } | |
203 | } | |
204 | ||
9f926fb5 HS |
205 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
206 | struct ieee80211_vif *vif) | |
95ea3627 | 207 | { |
4dee32f5 | 208 | struct rt2x00_dev *rt2x00dev = data; |
95ea3627 | 209 | |
05c914fe | 210 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 211 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
212 | vif->type != NL80211_IFTYPE_MESH_POINT && |
213 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
214 | return; |
215 | ||
8d59c4e9 HS |
216 | /* |
217 | * Update the beacon without locking. This is safe on PCI devices | |
218 | * as they only update the beacon periodically here. This should | |
219 | * never be called for USB devices. | |
220 | */ | |
221 | WARN_ON(rt2x00_is_usb(rt2x00dev)); | |
283dafa1 | 222 | rt2x00queue_update_beacon(rt2x00dev, vif); |
95ea3627 ID |
223 | } |
224 | ||
225 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
226 | { | |
0262ab0d | 227 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
228 | return; |
229 | ||
07896fe2 | 230 | /* send buffered bc/mc frames out for every bssid */ |
8b2c9824 JB |
231 | ieee80211_iterate_active_interfaces_atomic( |
232 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
233 | rt2x00lib_bc_buffer_iter, rt2x00dev); | |
9f926fb5 HS |
234 | /* |
235 | * Devices with pre tbtt interrupt don't need to update the beacon | |
236 | * here as they will fetch the next beacon directly prior to | |
237 | * transmission. | |
238 | */ | |
7b8a00dc | 239 | if (rt2x00_has_cap_pre_tbtt_interrupt(rt2x00dev)) |
9f926fb5 | 240 | return; |
07896fe2 HS |
241 | |
242 | /* fetch next beacon */ | |
8b2c9824 JB |
243 | ieee80211_iterate_active_interfaces_atomic( |
244 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
245 | rt2x00lib_beaconupdate_iter, rt2x00dev); | |
95ea3627 ID |
246 | } |
247 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
248 | ||
9f926fb5 HS |
249 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
250 | { | |
251 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
252 | return; | |
253 | ||
254 | /* fetch next beacon */ | |
8b2c9824 JB |
255 | ieee80211_iterate_active_interfaces_atomic( |
256 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
257 | rt2x00lib_beaconupdate_iter, rt2x00dev); | |
9f926fb5 HS |
258 | } |
259 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); | |
260 | ||
64e7d723 ID |
261 | void rt2x00lib_dmastart(struct queue_entry *entry) |
262 | { | |
263 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); | |
75256f03 | 264 | rt2x00queue_index_inc(entry, Q_INDEX); |
64e7d723 ID |
265 | } |
266 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); | |
267 | ||
652a9dd2 ID |
268 | void rt2x00lib_dmadone(struct queue_entry *entry) |
269 | { | |
dba5dc1a | 270 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
a13c8f31 | 271 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
75256f03 | 272 | rt2x00queue_index_inc(entry, Q_INDEX_DMA_DONE); |
652a9dd2 ID |
273 | } |
274 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); | |
275 | ||
84e9e8eb HS |
276 | static inline int rt2x00lib_txdone_bar_status(struct queue_entry *entry) |
277 | { | |
278 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; | |
279 | struct ieee80211_bar *bar = (void *) entry->skb->data; | |
280 | struct rt2x00_bar_list_entry *bar_entry; | |
281 | int ret; | |
282 | ||
283 | if (likely(!ieee80211_is_back_req(bar->frame_control))) | |
284 | return 0; | |
285 | ||
286 | /* | |
287 | * Unlike all other frames, the status report for BARs does | |
288 | * not directly come from the hardware as it is incapable of | |
289 | * matching a BA to a previously send BAR. The hardware will | |
290 | * report all BARs as if they weren't acked at all. | |
291 | * | |
292 | * Instead the RX-path will scan for incoming BAs and set the | |
293 | * block_acked flag if it sees one that was likely caused by | |
294 | * a BAR from us. | |
295 | * | |
296 | * Remove remaining BARs here and return their status for | |
297 | * TX done processing. | |
298 | */ | |
299 | ret = 0; | |
300 | rcu_read_lock(); | |
301 | list_for_each_entry_rcu(bar_entry, &rt2x00dev->bar_list, list) { | |
302 | if (bar_entry->entry != entry) | |
303 | continue; | |
304 | ||
305 | spin_lock_bh(&rt2x00dev->bar_list_lock); | |
306 | /* Return whether this BAR was blockacked or not */ | |
307 | ret = bar_entry->block_acked; | |
308 | /* Remove the BAR from our checklist */ | |
309 | list_del_rcu(&bar_entry->list); | |
310 | spin_unlock_bh(&rt2x00dev->bar_list_lock); | |
311 | kfree_rcu(bar_entry, head); | |
312 | ||
313 | break; | |
314 | } | |
315 | rcu_read_unlock(); | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
181d6902 ID |
320 | void rt2x00lib_txdone(struct queue_entry *entry, |
321 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 322 | { |
181d6902 | 323 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 324 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 325 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
f8eaec65 | 326 | unsigned int header_length, i; |
92ed48e5 | 327 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 328 | u8 skbdesc_flags = skbdesc->flags; |
2e27cff8 | 329 | bool success; |
d74f5ba4 | 330 | |
e513a0b6 GW |
331 | /* |
332 | * Unmap the skb. | |
333 | */ | |
fa69560f | 334 | rt2x00queue_unmap_skb(entry); |
e513a0b6 GW |
335 | |
336 | /* | |
337 | * Remove the extra tx headroom from the skb. | |
338 | */ | |
5616a6ef | 339 | skb_pull(entry->skb, rt2x00dev->extra_tx_headroom); |
e513a0b6 GW |
340 | |
341 | /* | |
342 | * Signal that the TX descriptor is no longer in the skb. | |
343 | */ | |
344 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
345 | ||
f8eaec65 RJH |
346 | /* |
347 | * Determine the length of 802.11 header. | |
348 | */ | |
349 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); | |
350 | ||
9f166171 ID |
351 | /* |
352 | * Remove L2 padding which was added during | |
353 | */ | |
7dab73b3 | 354 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
daee6c09 | 355 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 356 | |
2bb057d0 ID |
357 | /* |
358 | * If the IV/EIV data was stripped from the frame before it was | |
359 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 360 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
361 | * frame as it was passed to us. |
362 | */ | |
7b8a00dc | 363 | if (rt2x00_has_cap_hw_crypto(rt2x00dev)) |
9f166171 | 364 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 365 | |
e039fa4a JB |
366 | /* |
367 | * Send frame to debugfs immediately, after this call is completed | |
368 | * we are going to overwrite the skb->cb array. | |
369 | */ | |
370 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
371 | |
372 | /* | |
84e9e8eb HS |
373 | * Determine if the frame has been successfully transmitted and |
374 | * remove BARs from our check list while checking for their | |
375 | * TX status. | |
95ea3627 | 376 | */ |
2e27cff8 | 377 | success = |
84e9e8eb | 378 | rt2x00lib_txdone_bar_status(entry) || |
ce4c45e0 | 379 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 380 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
381 | |
382 | /* | |
383 | * Update TX statistics. | |
384 | */ | |
385 | rt2x00dev->link.qual.tx_success += success; | |
386 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 387 | |
e6a9854b JB |
388 | rate_idx = skbdesc->tx_rate_idx; |
389 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
390 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
391 | (txdesc->retry + 1) : 1; | |
e6a9854b | 392 | |
181d6902 ID |
393 | /* |
394 | * Initialize TX status | |
395 | */ | |
e039fa4a JB |
396 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
397 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
398 | |
399 | /* | |
400 | * Frame was send with retries, hardware tried | |
401 | * different rates to send out the frame, at each | |
3d2bc103 HS |
402 | * retry it lowered the rate 1 step except when the |
403 | * lowest rate was used. | |
92ed48e5 BP |
404 | */ |
405 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
406 | tx_info->status.rates[i].idx = rate_idx - i; | |
407 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
408 | |
409 | if (rate_idx - i == 0) { | |
410 | /* | |
411 | * The lowest rate (index 0) was used until the | |
412 | * number of max retries was reached. | |
413 | */ | |
414 | tx_info->status.rates[i].count = retry_rates - i; | |
415 | i++; | |
416 | break; | |
417 | } | |
92ed48e5 BP |
418 | tx_info->status.rates[i].count = 1; |
419 | } | |
2e27cff8 | 420 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 421 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 422 | |
e039fa4a | 423 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 424 | if (success) |
e039fa4a | 425 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 426 | else |
181d6902 | 427 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
428 | } |
429 | ||
1df90809 HS |
430 | /* |
431 | * Every single frame has it's own tx status, hence report | |
432 | * every frame as ampdu of size 1. | |
433 | * | |
434 | * TODO: if we can find out how many frames were aggregated | |
435 | * by the hw we could provide the real ampdu_len to mac80211 | |
436 | * which would allow the rc algorithm to better decide on | |
437 | * which rates are suitable. | |
438 | */ | |
f16d2db7 HS |
439 | if (test_bit(TXDONE_AMPDU, &txdesc->flags) || |
440 | tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
1df90809 HS |
441 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; |
442 | tx_info->status.ampdu_len = 1; | |
443 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
ab9d6e4f SG |
444 | |
445 | if (!success) | |
446 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1df90809 HS |
447 | } |
448 | ||
e6a9854b | 449 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 450 | if (success) |
181d6902 | 451 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 452 | else |
181d6902 | 453 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
454 | } |
455 | ||
456 | /* | |
7351c6bd JB |
457 | * Only send the status report to mac80211 when it's a frame |
458 | * that originated in mac80211. If this was a extra frame coming | |
459 | * through a mac80211 library call (RTS/CTS) then we should not | |
460 | * send the status report back. | |
95ea3627 | 461 | */ |
20ed3166 | 462 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
7dab73b3 | 463 | if (test_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags)) |
20ed3166 JS |
464 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
465 | else | |
466 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); | |
467 | } else | |
78e256c9 | 468 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
469 | |
470 | /* | |
471 | * Make this entry available for reuse. | |
472 | */ | |
95ea3627 | 473 | entry->skb = NULL; |
d74f5ba4 ID |
474 | entry->flags = 0; |
475 | ||
798b7adb | 476 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 477 | |
75256f03 | 478 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
d74f5ba4 ID |
479 | |
480 | /* | |
481 | * If the data queue was below the threshold before the txdone | |
482 | * handler we must make sure the packet queue in the mac80211 stack | |
3780d038 SG |
483 | * is reenabled when the txdone handler has finished. This has to be |
484 | * serialized with rt2x00mac_tx(), otherwise we can wake up queue | |
485 | * before it was stopped. | |
d74f5ba4 | 486 | */ |
3780d038 | 487 | spin_lock_bh(&entry->queue->tx_lock); |
d74f5ba4 | 488 | if (!rt2x00queue_threshold(entry->queue)) |
0b7fde54 | 489 | rt2x00queue_unpause_queue(entry->queue); |
3780d038 | 490 | spin_unlock_bh(&entry->queue->tx_lock); |
95ea3627 ID |
491 | } |
492 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
3392bece ID |
493 | |
494 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) | |
495 | { | |
496 | struct txdone_entry_desc txdesc; | |
497 | ||
498 | txdesc.flags = 0; | |
499 | __set_bit(status, &txdesc.flags); | |
500 | txdesc.retry = 0; | |
501 | ||
502 | rt2x00lib_txdone(entry, &txdesc); | |
503 | } | |
504 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); | |
95ea3627 | 505 | |
1c0bcf89 ID |
506 | static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie) |
507 | { | |
508 | struct ieee80211_mgmt *mgmt = (void *)data; | |
509 | u8 *pos, *end; | |
510 | ||
511 | pos = (u8 *)mgmt->u.beacon.variable; | |
512 | end = data + len; | |
513 | while (pos < end) { | |
514 | if (pos + 2 + pos[1] > end) | |
515 | return NULL; | |
516 | ||
517 | if (pos[0] == ie) | |
518 | return pos; | |
519 | ||
520 | pos += 2 + pos[1]; | |
521 | } | |
522 | ||
523 | return NULL; | |
524 | } | |
525 | ||
ed66ba47 GW |
526 | static void rt2x00lib_sleep(struct work_struct *work) |
527 | { | |
528 | struct rt2x00_dev *rt2x00dev = | |
529 | container_of(work, struct rt2x00_dev, sleep_work); | |
530 | ||
531 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
532 | return; | |
533 | ||
534 | /* | |
535 | * Check again is powersaving is enabled, to prevent races from delayed | |
536 | * work execution. | |
537 | */ | |
538 | if (!test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) | |
539 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, | |
540 | IEEE80211_CONF_CHANGE_PS); | |
541 | } | |
542 | ||
84e9e8eb HS |
543 | static void rt2x00lib_rxdone_check_ba(struct rt2x00_dev *rt2x00dev, |
544 | struct sk_buff *skb, | |
545 | struct rxdone_entry_desc *rxdesc) | |
546 | { | |
547 | struct rt2x00_bar_list_entry *entry; | |
548 | struct ieee80211_bar *ba = (void *)skb->data; | |
549 | ||
550 | if (likely(!ieee80211_is_back(ba->frame_control))) | |
551 | return; | |
552 | ||
553 | if (rxdesc->size < sizeof(*ba) + FCS_LEN) | |
554 | return; | |
555 | ||
556 | rcu_read_lock(); | |
557 | list_for_each_entry_rcu(entry, &rt2x00dev->bar_list, list) { | |
558 | ||
559 | if (ba->start_seq_num != entry->start_seq_num) | |
560 | continue; | |
561 | ||
562 | #define TID_CHECK(a, b) ( \ | |
563 | ((a) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)) == \ | |
564 | ((b) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK))) \ | |
565 | ||
566 | if (!TID_CHECK(ba->control, entry->control)) | |
567 | continue; | |
568 | ||
569 | #undef TID_CHECK | |
570 | ||
f012f758 | 571 | if (!ether_addr_equal_64bits(ba->ra, entry->ta)) |
84e9e8eb HS |
572 | continue; |
573 | ||
f012f758 | 574 | if (!ether_addr_equal_64bits(ba->ta, entry->ra)) |
84e9e8eb HS |
575 | continue; |
576 | ||
577 | /* Mark BAR since we received the according BA */ | |
578 | spin_lock_bh(&rt2x00dev->bar_list_lock); | |
579 | entry->block_acked = 1; | |
580 | spin_unlock_bh(&rt2x00dev->bar_list_lock); | |
581 | break; | |
582 | } | |
583 | rcu_read_unlock(); | |
584 | ||
585 | } | |
586 | ||
1c0bcf89 ID |
587 | static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev, |
588 | struct sk_buff *skb, | |
589 | struct rxdone_entry_desc *rxdesc) | |
590 | { | |
591 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
592 | struct ieee80211_tim_ie *tim_ie; | |
593 | u8 *tim; | |
594 | u8 tim_len; | |
595 | bool cam; | |
596 | ||
597 | /* If this is not a beacon, or if mac80211 has no powersaving | |
598 | * configured, or if the device is already in powersaving mode | |
599 | * we can exit now. */ | |
600 | if (likely(!ieee80211_is_beacon(hdr->frame_control) || | |
601 | !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS))) | |
602 | return; | |
603 | ||
604 | /* min. beacon length + FCS_LEN */ | |
605 | if (skb->len <= 40 + FCS_LEN) | |
606 | return; | |
607 | ||
608 | /* and only beacons from the associated BSSID, please */ | |
609 | if (!(rxdesc->dev_flags & RXDONE_MY_BSS) || | |
610 | !rt2x00dev->aid) | |
611 | return; | |
612 | ||
613 | rt2x00dev->last_beacon = jiffies; | |
614 | ||
615 | tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM); | |
616 | if (!tim) | |
617 | return; | |
618 | ||
619 | if (tim[1] < sizeof(*tim_ie)) | |
620 | return; | |
621 | ||
622 | tim_len = tim[1]; | |
623 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; | |
624 | ||
625 | /* Check whenever the PHY can be turned off again. */ | |
626 | ||
627 | /* 1. What about buffered unicast traffic for our AID? */ | |
628 | cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid); | |
629 | ||
630 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ | |
631 | cam |= (tim_ie->bitmap_ctrl & 0x01); | |
632 | ||
633 | if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) | |
ed66ba47 | 634 | queue_work(rt2x00dev->workqueue, &rt2x00dev->sleep_work); |
1c0bcf89 ID |
635 | } |
636 | ||
35f00cfc ID |
637 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
638 | struct rxdone_entry_desc *rxdesc) | |
639 | { | |
640 | struct ieee80211_supported_band *sband; | |
641 | const struct rt2x00_rate *rate; | |
642 | unsigned int i; | |
3590eea4 ID |
643 | int signal = rxdesc->signal; |
644 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
645 | ||
646 | switch (rxdesc->rate_mode) { | |
647 | case RATE_MODE_CCK: | |
648 | case RATE_MODE_OFDM: | |
649 | /* | |
650 | * For non-HT rates the MCS value needs to contain the | |
651 | * actually used rate modulation (CCK or OFDM). | |
652 | */ | |
653 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
654 | signal = RATE_MCS(rxdesc->rate_mode, signal); | |
655 | ||
656 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
657 | for (i = 0; i < sband->n_bitrates; i++) { | |
658 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
659 | if (((type == RXDONE_SIGNAL_PLCP) && | |
660 | (rate->plcp == signal)) || | |
661 | ((type == RXDONE_SIGNAL_BITRATE) && | |
662 | (rate->bitrate == signal)) || | |
663 | ((type == RXDONE_SIGNAL_MCS) && | |
664 | (rate->mcs == signal))) { | |
665 | return i; | |
666 | } | |
35f00cfc | 667 | } |
3590eea4 ID |
668 | break; |
669 | case RATE_MODE_HT_MIX: | |
670 | case RATE_MODE_HT_GREENFIELD: | |
671 | if (signal >= 0 && signal <= 76) | |
672 | return signal; | |
673 | break; | |
674 | default: | |
675 | break; | |
35f00cfc ID |
676 | } |
677 | ||
ec9c4989 JP |
678 | rt2x00_warn(rt2x00dev, "Frame received with unrecognized signal, mode=0x%.4x, signal=0x%.4x, type=%d\n", |
679 | rxdesc->rate_mode, signal, type); | |
35f00cfc ID |
680 | return 0; |
681 | } | |
682 | ||
88211021 | 683 | void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp) |
95ea3627 | 684 | { |
fa69560f | 685 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
c4da0048 GW |
686 | struct rxdone_entry_desc rxdesc; |
687 | struct sk_buff *skb; | |
e5ef5bad | 688 | struct ieee80211_rx_status *rx_status; |
2bb057d0 | 689 | unsigned int header_length; |
35f00cfc | 690 | int rate_idx; |
7e613e16 | 691 | |
070192dd ID |
692 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
693 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
694 | goto submit_entry; | |
695 | ||
7e613e16 ID |
696 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
697 | goto submit_entry; | |
698 | ||
c4da0048 GW |
699 | /* |
700 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
701 | * received frame and reuse the existing buffer. | |
702 | */ | |
88211021 | 703 | skb = rt2x00queue_alloc_rxskb(entry, gfp); |
c4da0048 | 704 | if (!skb) |
1550c8ef | 705 | goto submit_entry; |
c4da0048 GW |
706 | |
707 | /* | |
708 | * Unmap the skb. | |
709 | */ | |
fa69560f | 710 | rt2x00queue_unmap_skb(entry); |
c4da0048 GW |
711 | |
712 | /* | |
713 | * Extract the RXD details. | |
714 | */ | |
715 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
716 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 717 | |
7f503fc4 SG |
718 | /* |
719 | * Check for valid size in case we get corrupted descriptor from | |
720 | * hardware. | |
721 | */ | |
722 | if (unlikely(rxdesc.size == 0 || | |
723 | rxdesc.size > entry->queue->data_size)) { | |
ec9c4989 JP |
724 | rt2x00_err(rt2x00dev, "Wrong frame size %d max %d\n", |
725 | rxdesc.size, entry->queue->data_size); | |
7f503fc4 SG |
726 | dev_kfree_skb(entry->skb); |
727 | goto renew_skb; | |
728 | } | |
729 | ||
239c249d GW |
730 | /* |
731 | * The data behind the ieee80211 header must be | |
a9f853dd | 732 | * aligned on a 4 byte boundary. |
239c249d | 733 | */ |
2bb057d0 | 734 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 735 | |
2bb057d0 ID |
736 | /* |
737 | * Hardware might have stripped the IV/EIV/ICV data, | |
738 | * in that case it is possible that the data was | |
3ad2f3fb | 739 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
740 | * in which case we should reinsert the data into the frame. |
741 | */ | |
74415edb | 742 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 743 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 744 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 745 | &rxdesc); |
b7340833 GW |
746 | else if (header_length && |
747 | (rxdesc.size > header_length) && | |
748 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 749 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
239c249d | 750 | |
1398d458 AB |
751 | /* Trim buffer to correct size */ |
752 | skb_trim(entry->skb, rxdesc.size); | |
753 | ||
95ea3627 | 754 | /* |
3590eea4 | 755 | * Translate the signal to the correct bitrate index. |
95ea3627 | 756 | */ |
3590eea4 ID |
757 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
758 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || | |
759 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) | |
35f00cfc | 760 | rxdesc.flags |= RX_FLAG_HT; |
866a0503 | 761 | |
1c0bcf89 ID |
762 | /* |
763 | * Check if this is a beacon, and more frames have been | |
764 | * buffered while we were in powersaving mode. | |
765 | */ | |
766 | rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc); | |
767 | ||
84e9e8eb HS |
768 | /* |
769 | * Check for incoming BlockAcks to match to the BlockAckReqs | |
770 | * we've send out. | |
771 | */ | |
772 | rt2x00lib_rxdone_check_ba(rt2x00dev, entry->skb, &rxdesc); | |
773 | ||
61af43c5 | 774 | /* |
84e3196f | 775 | * Update extra components |
61af43c5 | 776 | */ |
84e3196f ID |
777 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
778 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
e5ef5bad | 779 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
69f81a2c | 780 | |
e5ef5bad ID |
781 | /* |
782 | * Initialize RX status information, and send frame | |
783 | * to mac80211. | |
784 | */ | |
785 | rx_status = IEEE80211_SKB_RXCB(entry->skb); | |
028014c8 GJ |
786 | |
787 | /* Ensure that all fields of rx_status are initialized | |
788 | * properly. The skb->cb array was used for driver | |
789 | * specific informations, so rx_status might contain | |
790 | * garbage. | |
791 | */ | |
792 | memset(rx_status, 0, sizeof(*rx_status)); | |
793 | ||
ae73e58e | 794 | rx_status->mactime = rxdesc.timestamp; |
e5ef5bad ID |
795 | rx_status->band = rt2x00dev->curr_band; |
796 | rx_status->freq = rt2x00dev->curr_freq; | |
35f00cfc | 797 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
798 | rx_status->signal = rxdesc.rssi; |
799 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 800 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 | 801 | |
7e613e16 | 802 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
c4da0048 | 803 | |
7f503fc4 | 804 | renew_skb: |
c4da0048 GW |
805 | /* |
806 | * Replace the skb with the freshly allocated one. | |
807 | */ | |
808 | entry->skb = skb; | |
d74f5ba4 | 809 | |
7e613e16 | 810 | submit_entry: |
070192dd | 811 | entry->flags = 0; |
75256f03 | 812 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
070192dd | 813 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
64e7d723 | 814 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
070192dd | 815 | rt2x00dev->ops->lib->clear_entry(entry); |
95ea3627 ID |
816 | } |
817 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
818 | ||
95ea3627 ID |
819 | /* |
820 | * Driver initialization handlers. | |
821 | */ | |
70e2fed4 ID |
822 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
823 | { | |
3d8606a6 | 824 | .flags = DEV_RATE_CCK, |
70e2fed4 | 825 | .bitrate = 10, |
aa776721 | 826 | .ratemask = BIT(0), |
70e2fed4 | 827 | .plcp = 0x00, |
35f00cfc | 828 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
829 | }, |
830 | { | |
3d8606a6 | 831 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 832 | .bitrate = 20, |
aa776721 | 833 | .ratemask = BIT(1), |
70e2fed4 | 834 | .plcp = 0x01, |
35f00cfc | 835 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
836 | }, |
837 | { | |
3d8606a6 | 838 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 839 | .bitrate = 55, |
aa776721 | 840 | .ratemask = BIT(2), |
70e2fed4 | 841 | .plcp = 0x02, |
35f00cfc | 842 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
843 | }, |
844 | { | |
3d8606a6 | 845 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 846 | .bitrate = 110, |
aa776721 | 847 | .ratemask = BIT(3), |
70e2fed4 | 848 | .plcp = 0x03, |
35f00cfc | 849 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
850 | }, |
851 | { | |
3d8606a6 | 852 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 853 | .bitrate = 60, |
aa776721 | 854 | .ratemask = BIT(4), |
70e2fed4 | 855 | .plcp = 0x0b, |
35f00cfc | 856 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
857 | }, |
858 | { | |
859 | .flags = DEV_RATE_OFDM, | |
860 | .bitrate = 90, | |
aa776721 | 861 | .ratemask = BIT(5), |
70e2fed4 | 862 | .plcp = 0x0f, |
35f00cfc | 863 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
864 | }, |
865 | { | |
3d8606a6 | 866 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 867 | .bitrate = 120, |
aa776721 | 868 | .ratemask = BIT(6), |
70e2fed4 | 869 | .plcp = 0x0a, |
35f00cfc | 870 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
871 | }, |
872 | { | |
873 | .flags = DEV_RATE_OFDM, | |
874 | .bitrate = 180, | |
aa776721 | 875 | .ratemask = BIT(7), |
70e2fed4 | 876 | .plcp = 0x0e, |
35f00cfc | 877 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
878 | }, |
879 | { | |
3d8606a6 | 880 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 881 | .bitrate = 240, |
aa776721 | 882 | .ratemask = BIT(8), |
70e2fed4 | 883 | .plcp = 0x09, |
35f00cfc | 884 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
885 | }, |
886 | { | |
887 | .flags = DEV_RATE_OFDM, | |
888 | .bitrate = 360, | |
aa776721 | 889 | .ratemask = BIT(9), |
70e2fed4 | 890 | .plcp = 0x0d, |
35f00cfc | 891 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
892 | }, |
893 | { | |
894 | .flags = DEV_RATE_OFDM, | |
895 | .bitrate = 480, | |
aa776721 | 896 | .ratemask = BIT(10), |
70e2fed4 | 897 | .plcp = 0x08, |
35f00cfc | 898 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
899 | }, |
900 | { | |
901 | .flags = DEV_RATE_OFDM, | |
902 | .bitrate = 540, | |
aa776721 | 903 | .ratemask = BIT(11), |
70e2fed4 | 904 | .plcp = 0x0c, |
35f00cfc | 905 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
906 | }, |
907 | }; | |
908 | ||
95ea3627 ID |
909 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
910 | const int channel, const int tx_power, | |
911 | const int value) | |
912 | { | |
59eb21a6 BR |
913 | /* XXX: this assumption about the band is wrong for 802.11j */ |
914 | entry->band = channel <= 14 ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
915 | entry->center_freq = ieee80211_channel_to_frequency(channel, | |
916 | entry->band); | |
8318d78a JB |
917 | entry->hw_value = value; |
918 | entry->max_power = tx_power; | |
919 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
920 | } |
921 | ||
922 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 923 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 924 | { |
70e2fed4 ID |
925 | entry->flags = 0; |
926 | entry->bitrate = rate->bitrate; | |
c2361bae | 927 | entry->hw_value = index; |
3ea96463 | 928 | entry->hw_value_short = index; |
70e2fed4 | 929 | |
3ea96463 | 930 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 931 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
932 | } |
933 | ||
934 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
935 | struct hw_mode_spec *spec) | |
936 | { | |
937 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
938 | struct ieee80211_channel *channels; |
939 | struct ieee80211_rate *rates; | |
31562e80 | 940 | unsigned int num_rates; |
95ea3627 | 941 | unsigned int i; |
95ea3627 | 942 | |
31562e80 ID |
943 | num_rates = 0; |
944 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
945 | num_rates += 4; | |
946 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
947 | num_rates += 8; | |
95ea3627 | 948 | |
839fafbe | 949 | channels = kcalloc(spec->num_channels, sizeof(*channels), GFP_KERNEL); |
95ea3627 | 950 | if (!channels) |
8318d78a | 951 | return -ENOMEM; |
95ea3627 | 952 | |
839fafbe | 953 | rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL); |
95ea3627 ID |
954 | if (!rates) |
955 | goto exit_free_channels; | |
956 | ||
957 | /* | |
958 | * Initialize Rate list. | |
959 | */ | |
31562e80 | 960 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 961 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
962 | |
963 | /* | |
964 | * Initialize Channel list. | |
965 | */ | |
966 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 967 | rt2x00lib_channel(&channels[i], |
8c5e7a5f | 968 | spec->channels[i].channel, |
8d1331b3 | 969 | spec->channels_info[i].max_power, i); |
95ea3627 ID |
970 | } |
971 | ||
972 | /* | |
31562e80 | 973 | * Intitialize 802.11b, 802.11g |
95ea3627 | 974 | * Rates: CCK, OFDM. |
8318d78a | 975 | * Channels: 2.4 GHz |
95ea3627 | 976 | */ |
47ac2683 | 977 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
978 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
979 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
980 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
981 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
982 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
983 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
984 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
985 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
986 | } |
987 | ||
988 | /* | |
989 | * Intitialize 802.11a | |
990 | * Rates: OFDM. | |
991 | * Channels: OFDM, UNII, HiperLAN2. | |
992 | */ | |
47ac2683 | 993 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
994 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
995 | spec->num_channels - 14; | |
996 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
997 | num_rates - 4; | |
998 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
999 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
1000 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
1001 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
1002 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
1003 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
1004 | } |
1005 | ||
95ea3627 ID |
1006 | return 0; |
1007 | ||
8318d78a | 1008 | exit_free_channels: |
95ea3627 | 1009 | kfree(channels); |
ec9c4989 | 1010 | rt2x00_err(rt2x00dev, "Allocation ieee80211 modes failed\n"); |
95ea3627 ID |
1011 | return -ENOMEM; |
1012 | } | |
1013 | ||
1014 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
1015 | { | |
0262ab0d | 1016 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
1017 | ieee80211_unregister_hw(rt2x00dev->hw); |
1018 | ||
8318d78a JB |
1019 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
1020 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
1021 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
1022 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
1023 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 1024 | } |
8c5e7a5f ID |
1025 | |
1026 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
1027 | } |
1028 | ||
1029 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
1030 | { | |
1031 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
1032 | int status; | |
1033 | ||
0262ab0d ID |
1034 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
1035 | return 0; | |
1036 | ||
95ea3627 ID |
1037 | /* |
1038 | * Initialize HW modes. | |
1039 | */ | |
1040 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
1041 | if (status) | |
1042 | return status; | |
1043 | ||
61448f88 GW |
1044 | /* |
1045 | * Initialize HW fields. | |
1046 | */ | |
1047 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
1048 | ||
e6218cc4 GW |
1049 | /* |
1050 | * Initialize extra TX headroom required. | |
1051 | */ | |
7a4a77b7 GW |
1052 | rt2x00dev->hw->extra_tx_headroom = |
1053 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
5616a6ef | 1054 | rt2x00dev->extra_tx_headroom); |
7a4a77b7 GW |
1055 | |
1056 | /* | |
1057 | * Take TX headroom required for alignment into account. | |
1058 | */ | |
7dab73b3 | 1059 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
7a4a77b7 | 1060 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; |
7dab73b3 | 1061 | else if (test_bit(REQUIRE_DMA, &rt2x00dev->cap_flags)) |
7a4a77b7 | 1062 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; |
e6218cc4 | 1063 | |
b4943d81 HS |
1064 | /* |
1065 | * Tell mac80211 about the size of our private STA structure. | |
1066 | */ | |
1067 | rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta); | |
1068 | ||
96c3da7d HS |
1069 | /* |
1070 | * Allocate tx status FIFO for driver use. | |
1071 | */ | |
7dab73b3 | 1072 | if (test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags)) { |
96c3da7d | 1073 | /* |
f78987cf HS |
1074 | * Allocate the txstatus fifo. In the worst case the tx |
1075 | * status fifo has to hold the tx status of all entries | |
1076 | * in all tx queues. Hence, calculate the kfifo size as | |
1077 | * tx_queues * entry_num and round up to the nearest | |
1078 | * power of 2. | |
96c3da7d | 1079 | */ |
f78987cf HS |
1080 | int kfifo_size = |
1081 | roundup_pow_of_two(rt2x00dev->ops->tx_queues * | |
54ca1933 | 1082 | rt2x00dev->tx->limit * |
f78987cf HS |
1083 | sizeof(u32)); |
1084 | ||
1085 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size, | |
96c3da7d HS |
1086 | GFP_KERNEL); |
1087 | if (status) | |
1088 | return status; | |
96c3da7d HS |
1089 | } |
1090 | ||
c5c65761 HS |
1091 | /* |
1092 | * Initialize tasklets if used by the driver. Tasklets are | |
1093 | * disabled until the interrupts are turned on. The driver | |
1094 | * has to handle that. | |
1095 | */ | |
1096 | #define RT2X00_TASKLET_INIT(taskletname) \ | |
1097 | if (rt2x00dev->ops->lib->taskletname) { \ | |
1098 | tasklet_init(&rt2x00dev->taskletname, \ | |
1099 | rt2x00dev->ops->lib->taskletname, \ | |
1100 | (unsigned long)rt2x00dev); \ | |
c5c65761 HS |
1101 | } |
1102 | ||
c8e15a1e | 1103 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
c5c65761 HS |
1104 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
1105 | RT2X00_TASKLET_INIT(tbtt_tasklet); | |
1106 | RT2X00_TASKLET_INIT(rxdone_tasklet); | |
1107 | RT2X00_TASKLET_INIT(autowake_tasklet); | |
1108 | ||
1109 | #undef RT2X00_TASKLET_INIT | |
1110 | ||
95ea3627 ID |
1111 | /* |
1112 | * Register HW. | |
1113 | */ | |
1114 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 1115 | if (status) |
95ea3627 | 1116 | return status; |
95ea3627 | 1117 | |
0262ab0d | 1118 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
1119 | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | * Initialization/uninitialization handlers. | |
1125 | */ | |
e37ea213 | 1126 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 1127 | { |
0262ab0d | 1128 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
1129 | return; |
1130 | ||
1131 | /* | |
1682fe6d | 1132 | * Unregister extra components. |
95ea3627 ID |
1133 | */ |
1134 | rt2x00rfkill_unregister(rt2x00dev); | |
1135 | ||
1136 | /* | |
1137 | * Allow the HW to uninitialize. | |
1138 | */ | |
1139 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
1140 | ||
1141 | /* | |
181d6902 | 1142 | * Free allocated queue entries. |
95ea3627 | 1143 | */ |
181d6902 | 1144 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
1145 | } |
1146 | ||
e37ea213 | 1147 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
1148 | { |
1149 | int status; | |
1150 | ||
0262ab0d | 1151 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
1152 | return 0; |
1153 | ||
1154 | /* | |
181d6902 | 1155 | * Allocate all queue entries. |
95ea3627 | 1156 | */ |
181d6902 ID |
1157 | status = rt2x00queue_initialize(rt2x00dev); |
1158 | if (status) | |
95ea3627 | 1159 | return status; |
95ea3627 ID |
1160 | |
1161 | /* | |
1162 | * Initialize the device. | |
1163 | */ | |
1164 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
1165 | if (status) { |
1166 | rt2x00queue_uninitialize(rt2x00dev); | |
1167 | return status; | |
1168 | } | |
95ea3627 | 1169 | |
0262ab0d | 1170 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 | 1171 | |
95ea3627 | 1172 | return 0; |
95ea3627 ID |
1173 | } |
1174 | ||
e37ea213 ID |
1175 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
1176 | { | |
1177 | int retval; | |
1178 | ||
0262ab0d | 1179 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1180 | return 0; |
1181 | ||
1182 | /* | |
1183 | * If this is the first interface which is added, | |
1184 | * we should load the firmware now. | |
1185 | */ | |
9404ef34 ID |
1186 | retval = rt2x00lib_load_firmware(rt2x00dev); |
1187 | if (retval) | |
1188 | return retval; | |
e37ea213 ID |
1189 | |
1190 | /* | |
1191 | * Initialize the device. | |
1192 | */ | |
1193 | retval = rt2x00lib_initialize(rt2x00dev); | |
1194 | if (retval) | |
1195 | return retval; | |
1196 | ||
6bb40dd1 ID |
1197 | rt2x00dev->intf_ap_count = 0; |
1198 | rt2x00dev->intf_sta_count = 0; | |
1199 | rt2x00dev->intf_associated = 0; | |
1200 | ||
bdfa500b ID |
1201 | /* Enable the radio */ |
1202 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1f0280cb | 1203 | if (retval) |
bdfa500b | 1204 | return retval; |
bdfa500b | 1205 | |
0262ab0d | 1206 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
1207 | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
1212 | { | |
0262ab0d | 1213 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
1214 | return; |
1215 | ||
1216 | /* | |
1217 | * Perhaps we can add something smarter here, | |
1218 | * but for now just disabling the radio should do. | |
1219 | */ | |
1220 | rt2x00lib_disable_radio(rt2x00dev); | |
1221 | ||
6bb40dd1 ID |
1222 | rt2x00dev->intf_ap_count = 0; |
1223 | rt2x00dev->intf_sta_count = 0; | |
1224 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
1225 | } |
1226 | ||
55d2e9da GW |
1227 | static inline void rt2x00lib_set_if_combinations(struct rt2x00_dev *rt2x00dev) |
1228 | { | |
1229 | struct ieee80211_iface_limit *if_limit; | |
1230 | struct ieee80211_iface_combination *if_combination; | |
1231 | ||
f5685ba6 HS |
1232 | if (rt2x00dev->ops->max_ap_intf < 2) |
1233 | return; | |
1234 | ||
55d2e9da GW |
1235 | /* |
1236 | * Build up AP interface limits structure. | |
1237 | */ | |
1238 | if_limit = &rt2x00dev->if_limits_ap; | |
1239 | if_limit->max = rt2x00dev->ops->max_ap_intf; | |
6ef9e2f6 FF |
1240 | if_limit->types = BIT(NL80211_IFTYPE_AP); |
1241 | #ifdef CONFIG_MAC80211_MESH | |
1242 | if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT); | |
1243 | #endif | |
55d2e9da GW |
1244 | |
1245 | /* | |
1246 | * Build up AP interface combinations structure. | |
1247 | */ | |
1248 | if_combination = &rt2x00dev->if_combinations[IF_COMB_AP]; | |
1249 | if_combination->limits = if_limit; | |
1250 | if_combination->n_limits = 1; | |
1251 | if_combination->max_interfaces = if_limit->max; | |
1252 | if_combination->num_different_channels = 1; | |
1253 | ||
1254 | /* | |
1255 | * Finally, specify the possible combinations to mac80211. | |
1256 | */ | |
1257 | rt2x00dev->hw->wiphy->iface_combinations = rt2x00dev->if_combinations; | |
1258 | rt2x00dev->hw->wiphy->n_iface_combinations = 1; | |
1259 | } | |
1260 | ||
5616a6ef GJ |
1261 | static unsigned int rt2x00dev_extra_tx_headroom(struct rt2x00_dev *rt2x00dev) |
1262 | { | |
1263 | if (WARN_ON(!rt2x00dev->tx)) | |
1264 | return 0; | |
1265 | ||
1266 | if (rt2x00_is_usb(rt2x00dev)) | |
1267 | return rt2x00dev->tx[0].winfo_size + rt2x00dev->tx[0].desc_size; | |
1268 | ||
1269 | return rt2x00dev->tx[0].winfo_size; | |
1270 | } | |
1271 | ||
95ea3627 ID |
1272 | /* |
1273 | * driver allocation handlers. | |
1274 | */ | |
95ea3627 ID |
1275 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
1276 | { | |
1277 | int retval = -ENOMEM; | |
1278 | ||
55d2e9da GW |
1279 | /* |
1280 | * Set possible interface combinations. | |
1281 | */ | |
1282 | rt2x00lib_set_if_combinations(rt2x00dev); | |
1283 | ||
1ebbc485 GW |
1284 | /* |
1285 | * Allocate the driver data memory, if necessary. | |
1286 | */ | |
1287 | if (rt2x00dev->ops->drv_data_size > 0) { | |
1288 | rt2x00dev->drv_data = kzalloc(rt2x00dev->ops->drv_data_size, | |
1289 | GFP_KERNEL); | |
1290 | if (!rt2x00dev->drv_data) { | |
1291 | retval = -ENOMEM; | |
1292 | goto exit; | |
1293 | } | |
1294 | } | |
1295 | ||
c5c65761 | 1296 | spin_lock_init(&rt2x00dev->irqmask_lock); |
8ff48a8b | 1297 | mutex_init(&rt2x00dev->csr_mutex); |
84e9e8eb HS |
1298 | INIT_LIST_HEAD(&rt2x00dev->bar_list); |
1299 | spin_lock_init(&rt2x00dev->bar_list_lock); | |
8ff48a8b | 1300 | |
66f84d65 SC |
1301 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
1302 | ||
6bb40dd1 ID |
1303 | /* |
1304 | * Make room for rt2x00_intf inside the per-interface | |
1305 | * structure ieee80211_vif. | |
1306 | */ | |
1307 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
1308 | ||
6c50f945 HS |
1309 | /* |
1310 | * rt2x00 devices can only use the last n bits of the MAC address | |
1311 | * for virtual interfaces. | |
1312 | */ | |
1313 | rt2x00dev->hw->wiphy->addr_mask[ETH_ALEN - 1] = | |
1314 | (rt2x00dev->ops->max_ap_intf - 1); | |
1315 | ||
9acd56d3 | 1316 | /* |
0439f536 | 1317 | * Initialize work. |
9acd56d3 | 1318 | */ |
0439f536 | 1319 | rt2x00dev->workqueue = |
d8537548 | 1320 | alloc_ordered_workqueue("%s", 0, wiphy_name(rt2x00dev->hw->wiphy)); |
0439f536 ID |
1321 | if (!rt2x00dev->workqueue) { |
1322 | retval = -ENOMEM; | |
1323 | goto exit; | |
1324 | } | |
1325 | ||
9acd56d3 | 1326 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
1c0bcf89 | 1327 | INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup); |
ed66ba47 | 1328 | INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep); |
9acd56d3 | 1329 | |
95ea3627 ID |
1330 | /* |
1331 | * Let the driver probe the device to detect the capabilities. | |
1332 | */ | |
1333 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1334 | if (retval) { | |
ec9c4989 | 1335 | rt2x00_err(rt2x00dev, "Failed to allocate device\n"); |
95ea3627 ID |
1336 | goto exit; |
1337 | } | |
1338 | ||
95ea3627 | 1339 | /* |
181d6902 | 1340 | * Allocate queue array. |
95ea3627 | 1341 | */ |
181d6902 | 1342 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1343 | if (retval) |
1344 | goto exit; | |
1345 | ||
5616a6ef GJ |
1346 | /* Cache TX headroom value */ |
1347 | rt2x00dev->extra_tx_headroom = rt2x00dev_extra_tx_headroom(rt2x00dev); | |
1348 | ||
e9e43303 GJ |
1349 | /* |
1350 | * Determine which operating modes are supported, all modes | |
1351 | * which require beaconing, depend on the availability of | |
1352 | * beacon entries. | |
1353 | */ | |
1354 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
56e82563 | 1355 | if (rt2x00dev->bcn->limit > 0) |
e9e43303 GJ |
1356 | rt2x00dev->hw->wiphy->interface_modes |= |
1357 | BIT(NL80211_IFTYPE_ADHOC) | | |
1358 | BIT(NL80211_IFTYPE_AP) | | |
1359 | #ifdef CONFIG_MAC80211_MESH | |
1360 | BIT(NL80211_IFTYPE_MESH_POINT) | | |
1361 | #endif | |
1362 | BIT(NL80211_IFTYPE_WDS); | |
1363 | ||
1364 | rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
1365 | ||
95ea3627 ID |
1366 | /* |
1367 | * Initialize ieee80211 structure. | |
1368 | */ | |
1369 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1370 | if (retval) { | |
ec9c4989 | 1371 | rt2x00_err(rt2x00dev, "Failed to initialize hw\n"); |
95ea3627 ID |
1372 | goto exit; |
1373 | } | |
1374 | ||
a9450b70 | 1375 | /* |
1682fe6d | 1376 | * Register extra components. |
a9450b70 | 1377 | */ |
84e3196f | 1378 | rt2x00link_register(rt2x00dev); |
a9450b70 | 1379 | rt2x00leds_register(rt2x00dev); |
95ea3627 | 1380 | rt2x00debug_register(rt2x00dev); |
e2bc7c5f | 1381 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
1382 | |
1383 | return 0; | |
1384 | ||
1385 | exit: | |
1386 | rt2x00lib_remove_dev(rt2x00dev); | |
1387 | ||
1388 | return retval; | |
1389 | } | |
1390 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1391 | ||
1392 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1393 | { | |
0262ab0d | 1394 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1395 | |
95ea3627 ID |
1396 | /* |
1397 | * Disable radio. | |
1398 | */ | |
1399 | rt2x00lib_disable_radio(rt2x00dev); | |
1400 | ||
d8cc8926 PR |
1401 | /* |
1402 | * Stop all work. | |
1403 | */ | |
d8cc8926 | 1404 | cancel_work_sync(&rt2x00dev->intf_work); |
3bb42a64 | 1405 | cancel_delayed_work_sync(&rt2x00dev->autowakeup_work); |
ed66ba47 | 1406 | cancel_work_sync(&rt2x00dev->sleep_work); |
37f4ee0b | 1407 | if (rt2x00_is_usb(rt2x00dev)) { |
f421111b | 1408 | hrtimer_cancel(&rt2x00dev->txstatus_timer); |
37f4ee0b SG |
1409 | cancel_work_sync(&rt2x00dev->rxdone_work); |
1410 | cancel_work_sync(&rt2x00dev->txdone_work); | |
1411 | } | |
7be08153 GJ |
1412 | if (rt2x00dev->workqueue) |
1413 | destroy_workqueue(rt2x00dev->workqueue); | |
d8cc8926 | 1414 | |
96c3da7d HS |
1415 | /* |
1416 | * Free the tx status fifo. | |
1417 | */ | |
1418 | kfifo_free(&rt2x00dev->txstatus_fifo); | |
1419 | ||
1420 | /* | |
1421 | * Kill the tx status tasklet. | |
1422 | */ | |
1423 | tasklet_kill(&rt2x00dev->txstatus_tasklet); | |
e1f4e808 ID |
1424 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
1425 | tasklet_kill(&rt2x00dev->tbtt_tasklet); | |
1426 | tasklet_kill(&rt2x00dev->rxdone_tasklet); | |
1427 | tasklet_kill(&rt2x00dev->autowake_tasklet); | |
96c3da7d | 1428 | |
95ea3627 ID |
1429 | /* |
1430 | * Uninitialize device. | |
1431 | */ | |
1432 | rt2x00lib_uninitialize(rt2x00dev); | |
1433 | ||
1434 | /* | |
1682fe6d | 1435 | * Free extra components |
95ea3627 ID |
1436 | */ |
1437 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
1438 | rt2x00leds_unregister(rt2x00dev); |
1439 | ||
95ea3627 ID |
1440 | /* |
1441 | * Free ieee80211_hw memory. | |
1442 | */ | |
1443 | rt2x00lib_remove_hw(rt2x00dev); | |
1444 | ||
1445 | /* | |
1446 | * Free firmware image. | |
1447 | */ | |
1448 | rt2x00lib_free_firmware(rt2x00dev); | |
1449 | ||
1450 | /* | |
181d6902 | 1451 | * Free queue structures. |
95ea3627 | 1452 | */ |
181d6902 | 1453 | rt2x00queue_free(rt2x00dev); |
1ebbc485 GW |
1454 | |
1455 | /* | |
1456 | * Free the driver data. | |
1457 | */ | |
1458 | if (rt2x00dev->drv_data) | |
1459 | kfree(rt2x00dev->drv_data); | |
95ea3627 ID |
1460 | } |
1461 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1462 | ||
1463 | /* | |
1464 | * Device state handlers | |
1465 | */ | |
1466 | #ifdef CONFIG_PM | |
1467 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1468 | { | |
ec9c4989 | 1469 | rt2x00_dbg(rt2x00dev, "Going to sleep\n"); |
066cb637 ID |
1470 | |
1471 | /* | |
07126127 | 1472 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1473 | */ |
07126127 ID |
1474 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1475 | return 0; | |
95ea3627 ID |
1476 | |
1477 | /* | |
07126127 | 1478 | * Cleanup as much as possible. |
95ea3627 | 1479 | */ |
95ea3627 | 1480 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1481 | |
1482 | /* | |
1483 | * Suspend/disable extra components. | |
1484 | */ | |
a9450b70 | 1485 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1486 | rt2x00debug_deregister(rt2x00dev); |
1487 | ||
1488 | /* | |
9896322a ID |
1489 | * Set device mode to sleep for power management, |
1490 | * on some hardware this call seems to consistently fail. | |
1491 | * From the specifications it is hard to tell why it fails, | |
1492 | * and if this is a "bad thing". | |
1493 | * Overall it is safe to just ignore the failure and | |
1494 | * continue suspending. The only downside is that the | |
1495 | * device will not be in optimal power save mode, but with | |
1496 | * the radio and the other components already disabled the | |
1497 | * device is as good as disabled. | |
95ea3627 | 1498 | */ |
07126127 | 1499 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
ec9c4989 | 1500 | rt2x00_warn(rt2x00dev, "Device failed to enter sleep state, continue suspending\n"); |
95ea3627 ID |
1501 | |
1502 | return 0; | |
1503 | } | |
1504 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1505 | ||
1506 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1507 | { | |
ec9c4989 | 1508 | rt2x00_dbg(rt2x00dev, "Waking up\n"); |
95ea3627 ID |
1509 | |
1510 | /* | |
1682fe6d | 1511 | * Restore/enable extra components. |
95ea3627 ID |
1512 | */ |
1513 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1514 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1515 | |
e37ea213 ID |
1516 | /* |
1517 | * We are ready again to receive requests from mac80211. | |
1518 | */ | |
0262ab0d | 1519 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1520 | |
95ea3627 | 1521 | return 0; |
95ea3627 ID |
1522 | } |
1523 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1524 | #endif /* CONFIG_PM */ | |
1525 | ||
1526 | /* | |
1527 | * rt2x00lib module information. | |
1528 | */ | |
1529 | MODULE_AUTHOR(DRV_PROJECT); | |
1530 | MODULE_VERSION(DRV_VERSION); | |
1531 | MODULE_DESCRIPTION("rt2x00 library"); | |
1532 | MODULE_LICENSE("GPL"); |