Commit | Line | Data |
---|---|---|
95ea3627 | 1 | /* |
7e613e16 ID |
2 | Copyright (C) 2010 Willow Garage <http://www.willowgarage.com> |
3 | Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com> | |
95ea3627 ID |
4 | <http://rt2x00.serialmonkey.com> |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the | |
18 | Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | /* | |
23 | Module: rt2x00lib | |
24 | Abstract: rt2x00 generic device routines. | |
25 | */ | |
26 | ||
95ea3627 ID |
27 | #include <linux/kernel.h> |
28 | #include <linux/module.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
95ea3627 ID |
30 | |
31 | #include "rt2x00.h" | |
32 | #include "rt2x00lib.h" | |
33 | ||
95ea3627 ID |
34 | /* |
35 | * Radio control handlers. | |
36 | */ | |
37 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
38 | { | |
39 | int status; | |
40 | ||
41 | /* | |
42 | * Don't enable the radio twice. | |
43 | * And check if the hardware button has been disabled. | |
44 | */ | |
4b9631a4 | 45 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
46 | return 0; |
47 | ||
837e7f24 | 48 | /* |
181d6902 | 49 | * Initialize all data queues. |
837e7f24 | 50 | */ |
798b7adb | 51 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 52 | |
95ea3627 ID |
53 | /* |
54 | * Enable radio. | |
55 | */ | |
a2e1d52a ID |
56 | status = |
57 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
58 | if (status) |
59 | return status; | |
60 | ||
2b08da3f ID |
61 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
62 | ||
a2e1d52a | 63 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 64 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 65 | |
0262ab0d | 66 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
67 | |
68 | /* | |
0b7fde54 | 69 | * Enable queues. |
95ea3627 | 70 | */ |
0b7fde54 | 71 | rt2x00queue_start_queues(rt2x00dev); |
ea175ee2 | 72 | rt2x00link_start_tuner(rt2x00dev); |
95ea3627 | 73 | |
c965c74b ID |
74 | /* |
75 | * Start watchdog monitoring. | |
76 | */ | |
77 | rt2x00link_start_watchdog(rt2x00dev); | |
78 | ||
95ea3627 ID |
79 | return 0; |
80 | } | |
81 | ||
82 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
83 | { | |
0262ab0d | 84 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
85 | return; |
86 | ||
c965c74b ID |
87 | /* |
88 | * Stop watchdog monitoring. | |
89 | */ | |
90 | rt2x00link_stop_watchdog(rt2x00dev); | |
91 | ||
95ea3627 | 92 | /* |
0b7fde54 | 93 | * Stop all queues |
95ea3627 | 94 | */ |
ea175ee2 | 95 | rt2x00link_stop_tuner(rt2x00dev); |
0b7fde54 | 96 | rt2x00queue_stop_queues(rt2x00dev); |
5be65609 | 97 | rt2x00queue_flush_queues(rt2x00dev, true); |
95ea3627 ID |
98 | |
99 | /* | |
100 | * Disable radio. | |
101 | */ | |
102 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 103 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 104 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 105 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
106 | } |
107 | ||
6bb40dd1 ID |
108 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
109 | struct ieee80211_vif *vif) | |
5c58ee51 | 110 | { |
6bb40dd1 ID |
111 | struct rt2x00_dev *rt2x00dev = data; |
112 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 | 113 | |
980dfcb9 ID |
114 | /* |
115 | * It is possible the radio was disabled while the work had been | |
116 | * scheduled. If that happens we should return here immediately, | |
117 | * note that in the spinlock protected area above the delayed_flags | |
118 | * have been cleared correctly. | |
119 | */ | |
0262ab0d | 120 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
121 | return; |
122 | ||
bfe6a15d | 123 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) |
69cf36a4 | 124 | rt2x00queue_update_beacon(rt2x00dev, vif); |
6bb40dd1 | 125 | } |
5c58ee51 | 126 | |
6bb40dd1 ID |
127 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
128 | { | |
129 | struct rt2x00_dev *rt2x00dev = | |
130 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
131 | |
132 | /* | |
6bb40dd1 ID |
133 | * Iterate over each interface and perform the |
134 | * requested configurations. | |
471b3efd | 135 | */ |
6bb40dd1 ID |
136 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
137 | rt2x00lib_intf_scheduled_iter, | |
138 | rt2x00dev); | |
5c58ee51 ID |
139 | } |
140 | ||
95ea3627 ID |
141 | /* |
142 | * Interrupt context handlers. | |
143 | */ | |
07896fe2 HS |
144 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
145 | struct ieee80211_vif *vif) | |
146 | { | |
147 | struct rt2x00_dev *rt2x00dev = data; | |
148 | struct sk_buff *skb; | |
149 | ||
150 | /* | |
151 | * Only AP mode interfaces do broad- and multicast buffering | |
152 | */ | |
153 | if (vif->type != NL80211_IFTYPE_AP) | |
154 | return; | |
155 | ||
156 | /* | |
157 | * Send out buffered broad- and multicast frames | |
158 | */ | |
159 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
160 | while (skb) { | |
161 | rt2x00mac_tx(rt2x00dev->hw, skb); | |
162 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); | |
163 | } | |
164 | } | |
165 | ||
9f926fb5 HS |
166 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
167 | struct ieee80211_vif *vif) | |
95ea3627 | 168 | { |
4dee32f5 | 169 | struct rt2x00_dev *rt2x00dev = data; |
95ea3627 | 170 | |
05c914fe | 171 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 172 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
173 | vif->type != NL80211_IFTYPE_MESH_POINT && |
174 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
175 | return; |
176 | ||
8d59c4e9 HS |
177 | /* |
178 | * Update the beacon without locking. This is safe on PCI devices | |
179 | * as they only update the beacon periodically here. This should | |
180 | * never be called for USB devices. | |
181 | */ | |
182 | WARN_ON(rt2x00_is_usb(rt2x00dev)); | |
183 | rt2x00queue_update_beacon_locked(rt2x00dev, vif); | |
95ea3627 ID |
184 | } |
185 | ||
186 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
187 | { | |
0262ab0d | 188 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
189 | return; |
190 | ||
07896fe2 | 191 | /* send buffered bc/mc frames out for every bssid */ |
8d59c4e9 HS |
192 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
193 | rt2x00lib_bc_buffer_iter, | |
194 | rt2x00dev); | |
9f926fb5 HS |
195 | /* |
196 | * Devices with pre tbtt interrupt don't need to update the beacon | |
197 | * here as they will fetch the next beacon directly prior to | |
198 | * transmission. | |
199 | */ | |
200 | if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags)) | |
201 | return; | |
07896fe2 HS |
202 | |
203 | /* fetch next beacon */ | |
8d59c4e9 HS |
204 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
205 | rt2x00lib_beaconupdate_iter, | |
206 | rt2x00dev); | |
95ea3627 ID |
207 | } |
208 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
209 | ||
9f926fb5 HS |
210 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
211 | { | |
212 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
213 | return; | |
214 | ||
215 | /* fetch next beacon */ | |
8d59c4e9 HS |
216 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
217 | rt2x00lib_beaconupdate_iter, | |
218 | rt2x00dev); | |
9f926fb5 HS |
219 | } |
220 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); | |
221 | ||
64e7d723 ID |
222 | void rt2x00lib_dmastart(struct queue_entry *entry) |
223 | { | |
224 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); | |
225 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
226 | } | |
227 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); | |
228 | ||
652a9dd2 ID |
229 | void rt2x00lib_dmadone(struct queue_entry *entry) |
230 | { | |
dba5dc1a | 231 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
a13c8f31 | 232 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
652a9dd2 ID |
233 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DMA_DONE); |
234 | } | |
235 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); | |
236 | ||
181d6902 ID |
237 | void rt2x00lib_txdone(struct queue_entry *entry, |
238 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 239 | { |
181d6902 | 240 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 241 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 242 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
f8eaec65 | 243 | unsigned int header_length, i; |
92ed48e5 | 244 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 245 | u8 skbdesc_flags = skbdesc->flags; |
2e27cff8 | 246 | bool success; |
d74f5ba4 | 247 | |
e513a0b6 GW |
248 | /* |
249 | * Unmap the skb. | |
250 | */ | |
fa69560f | 251 | rt2x00queue_unmap_skb(entry); |
e513a0b6 GW |
252 | |
253 | /* | |
254 | * Remove the extra tx headroom from the skb. | |
255 | */ | |
256 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); | |
257 | ||
258 | /* | |
259 | * Signal that the TX descriptor is no longer in the skb. | |
260 | */ | |
261 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
262 | ||
f8eaec65 RJH |
263 | /* |
264 | * Determine the length of 802.11 header. | |
265 | */ | |
266 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); | |
267 | ||
9f166171 ID |
268 | /* |
269 | * Remove L2 padding which was added during | |
270 | */ | |
271 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 272 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 273 | |
2bb057d0 ID |
274 | /* |
275 | * If the IV/EIV data was stripped from the frame before it was | |
276 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 277 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
278 | * frame as it was passed to us. |
279 | */ | |
280 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 281 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 282 | |
e039fa4a JB |
283 | /* |
284 | * Send frame to debugfs immediately, after this call is completed | |
285 | * we are going to overwrite the skb->cb array. | |
286 | */ | |
287 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
288 | |
289 | /* | |
2e27cff8 | 290 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 291 | */ |
2e27cff8 | 292 | success = |
ce4c45e0 | 293 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 294 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
295 | |
296 | /* | |
297 | * Update TX statistics. | |
298 | */ | |
299 | rt2x00dev->link.qual.tx_success += success; | |
300 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 301 | |
e6a9854b JB |
302 | rate_idx = skbdesc->tx_rate_idx; |
303 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
304 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
305 | (txdesc->retry + 1) : 1; | |
e6a9854b | 306 | |
181d6902 ID |
307 | /* |
308 | * Initialize TX status | |
309 | */ | |
e039fa4a JB |
310 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
311 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
312 | |
313 | /* | |
314 | * Frame was send with retries, hardware tried | |
315 | * different rates to send out the frame, at each | |
3d2bc103 HS |
316 | * retry it lowered the rate 1 step except when the |
317 | * lowest rate was used. | |
92ed48e5 BP |
318 | */ |
319 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
320 | tx_info->status.rates[i].idx = rate_idx - i; | |
321 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
322 | |
323 | if (rate_idx - i == 0) { | |
324 | /* | |
325 | * The lowest rate (index 0) was used until the | |
326 | * number of max retries was reached. | |
327 | */ | |
328 | tx_info->status.rates[i].count = retry_rates - i; | |
329 | i++; | |
330 | break; | |
331 | } | |
92ed48e5 BP |
332 | tx_info->status.rates[i].count = 1; |
333 | } | |
2e27cff8 | 334 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 335 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 336 | |
e039fa4a | 337 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 338 | if (success) |
e039fa4a | 339 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 340 | else |
181d6902 | 341 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
342 | } |
343 | ||
1df90809 HS |
344 | /* |
345 | * Every single frame has it's own tx status, hence report | |
346 | * every frame as ampdu of size 1. | |
347 | * | |
348 | * TODO: if we can find out how many frames were aggregated | |
349 | * by the hw we could provide the real ampdu_len to mac80211 | |
350 | * which would allow the rc algorithm to better decide on | |
351 | * which rates are suitable. | |
352 | */ | |
353 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
354 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; | |
355 | tx_info->status.ampdu_len = 1; | |
356 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
357 | } | |
358 | ||
e6a9854b | 359 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 360 | if (success) |
181d6902 | 361 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 362 | else |
181d6902 | 363 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
364 | } |
365 | ||
366 | /* | |
7351c6bd JB |
367 | * Only send the status report to mac80211 when it's a frame |
368 | * that originated in mac80211. If this was a extra frame coming | |
369 | * through a mac80211 library call (RTS/CTS) then we should not | |
370 | * send the status report back. | |
95ea3627 | 371 | */ |
20ed3166 JS |
372 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
373 | if (test_bit(DRIVER_REQUIRE_TASKLET_CONTEXT, &rt2x00dev->flags)) | |
374 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); | |
375 | else | |
376 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); | |
377 | } else | |
78e256c9 | 378 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
379 | |
380 | /* | |
381 | * Make this entry available for reuse. | |
382 | */ | |
95ea3627 | 383 | entry->skb = NULL; |
d74f5ba4 ID |
384 | entry->flags = 0; |
385 | ||
798b7adb | 386 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 387 | |
d74f5ba4 ID |
388 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
389 | ||
390 | /* | |
391 | * If the data queue was below the threshold before the txdone | |
392 | * handler we must make sure the packet queue in the mac80211 stack | |
393 | * is reenabled when the txdone handler has finished. | |
394 | */ | |
395 | if (!rt2x00queue_threshold(entry->queue)) | |
0b7fde54 | 396 | rt2x00queue_unpause_queue(entry->queue); |
95ea3627 ID |
397 | } |
398 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
3392bece ID |
399 | |
400 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) | |
401 | { | |
402 | struct txdone_entry_desc txdesc; | |
403 | ||
404 | txdesc.flags = 0; | |
405 | __set_bit(status, &txdesc.flags); | |
406 | txdesc.retry = 0; | |
407 | ||
408 | rt2x00lib_txdone(entry, &txdesc); | |
409 | } | |
410 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); | |
95ea3627 | 411 | |
35f00cfc ID |
412 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
413 | struct rxdone_entry_desc *rxdesc) | |
414 | { | |
415 | struct ieee80211_supported_band *sband; | |
416 | const struct rt2x00_rate *rate; | |
417 | unsigned int i; | |
3590eea4 ID |
418 | int signal = rxdesc->signal; |
419 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
420 | ||
421 | switch (rxdesc->rate_mode) { | |
422 | case RATE_MODE_CCK: | |
423 | case RATE_MODE_OFDM: | |
424 | /* | |
425 | * For non-HT rates the MCS value needs to contain the | |
426 | * actually used rate modulation (CCK or OFDM). | |
427 | */ | |
428 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
429 | signal = RATE_MCS(rxdesc->rate_mode, signal); | |
430 | ||
431 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
432 | for (i = 0; i < sband->n_bitrates; i++) { | |
433 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
434 | if (((type == RXDONE_SIGNAL_PLCP) && | |
435 | (rate->plcp == signal)) || | |
436 | ((type == RXDONE_SIGNAL_BITRATE) && | |
437 | (rate->bitrate == signal)) || | |
438 | ((type == RXDONE_SIGNAL_MCS) && | |
439 | (rate->mcs == signal))) { | |
440 | return i; | |
441 | } | |
35f00cfc | 442 | } |
3590eea4 ID |
443 | break; |
444 | case RATE_MODE_HT_MIX: | |
445 | case RATE_MODE_HT_GREENFIELD: | |
446 | if (signal >= 0 && signal <= 76) | |
447 | return signal; | |
448 | break; | |
449 | default: | |
450 | break; | |
35f00cfc ID |
451 | } |
452 | ||
453 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
3590eea4 ID |
454 | "mode=0x%.4x, signal=0x%.4x, type=%d.\n", |
455 | rxdesc->rate_mode, signal, type); | |
35f00cfc ID |
456 | return 0; |
457 | } | |
458 | ||
fa69560f | 459 | void rt2x00lib_rxdone(struct queue_entry *entry) |
95ea3627 | 460 | { |
fa69560f | 461 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
c4da0048 GW |
462 | struct rxdone_entry_desc rxdesc; |
463 | struct sk_buff *skb; | |
e5ef5bad | 464 | struct ieee80211_rx_status *rx_status; |
2bb057d0 | 465 | unsigned int header_length; |
35f00cfc | 466 | int rate_idx; |
7e613e16 | 467 | |
070192dd ID |
468 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
469 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) | |
470 | goto submit_entry; | |
471 | ||
7e613e16 ID |
472 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
473 | goto submit_entry; | |
474 | ||
c4da0048 GW |
475 | /* |
476 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
477 | * received frame and reuse the existing buffer. | |
478 | */ | |
fa69560f | 479 | skb = rt2x00queue_alloc_rxskb(entry); |
c4da0048 | 480 | if (!skb) |
1550c8ef | 481 | goto submit_entry; |
c4da0048 GW |
482 | |
483 | /* | |
484 | * Unmap the skb. | |
485 | */ | |
fa69560f | 486 | rt2x00queue_unmap_skb(entry); |
c4da0048 GW |
487 | |
488 | /* | |
489 | * Extract the RXD details. | |
490 | */ | |
491 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
492 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 493 | |
239c249d GW |
494 | /* |
495 | * The data behind the ieee80211 header must be | |
a9f853dd | 496 | * aligned on a 4 byte boundary. |
239c249d | 497 | */ |
2bb057d0 | 498 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 499 | |
2bb057d0 ID |
500 | /* |
501 | * Hardware might have stripped the IV/EIV/ICV data, | |
502 | * in that case it is possible that the data was | |
3ad2f3fb | 503 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
504 | * in which case we should reinsert the data into the frame. |
505 | */ | |
74415edb | 506 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 507 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 508 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 509 | &rxdesc); |
b7340833 GW |
510 | else if (header_length && |
511 | (rxdesc.size > header_length) && | |
512 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 513 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 514 | else |
daee6c09 | 515 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 516 | |
1398d458 AB |
517 | /* Trim buffer to correct size */ |
518 | skb_trim(entry->skb, rxdesc.size); | |
519 | ||
95ea3627 | 520 | /* |
3590eea4 | 521 | * Translate the signal to the correct bitrate index. |
95ea3627 | 522 | */ |
3590eea4 ID |
523 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
524 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || | |
525 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) | |
35f00cfc | 526 | rxdesc.flags |= RX_FLAG_HT; |
866a0503 | 527 | |
61af43c5 | 528 | /* |
84e3196f | 529 | * Update extra components |
61af43c5 | 530 | */ |
84e3196f ID |
531 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
532 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
e5ef5bad | 533 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
69f81a2c | 534 | |
e5ef5bad ID |
535 | /* |
536 | * Initialize RX status information, and send frame | |
537 | * to mac80211. | |
538 | */ | |
539 | rx_status = IEEE80211_SKB_RXCB(entry->skb); | |
ae73e58e | 540 | rx_status->mactime = rxdesc.timestamp; |
e5ef5bad ID |
541 | rx_status->band = rt2x00dev->curr_band; |
542 | rx_status->freq = rt2x00dev->curr_freq; | |
35f00cfc | 543 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
544 | rx_status->signal = rxdesc.rssi; |
545 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 546 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 | 547 | |
7e613e16 | 548 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
c4da0048 GW |
549 | |
550 | /* | |
551 | * Replace the skb with the freshly allocated one. | |
552 | */ | |
553 | entry->skb = skb; | |
d74f5ba4 | 554 | |
7e613e16 | 555 | submit_entry: |
070192dd | 556 | entry->flags = 0; |
7e613e16 | 557 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
070192dd | 558 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
64e7d723 | 559 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
070192dd | 560 | rt2x00dev->ops->lib->clear_entry(entry); |
95ea3627 ID |
561 | } |
562 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
563 | ||
95ea3627 ID |
564 | /* |
565 | * Driver initialization handlers. | |
566 | */ | |
70e2fed4 ID |
567 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
568 | { | |
3d8606a6 | 569 | .flags = DEV_RATE_CCK, |
70e2fed4 | 570 | .bitrate = 10, |
aa776721 | 571 | .ratemask = BIT(0), |
70e2fed4 | 572 | .plcp = 0x00, |
35f00cfc | 573 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
574 | }, |
575 | { | |
3d8606a6 | 576 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 577 | .bitrate = 20, |
aa776721 | 578 | .ratemask = BIT(1), |
70e2fed4 | 579 | .plcp = 0x01, |
35f00cfc | 580 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
581 | }, |
582 | { | |
3d8606a6 | 583 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 584 | .bitrate = 55, |
aa776721 | 585 | .ratemask = BIT(2), |
70e2fed4 | 586 | .plcp = 0x02, |
35f00cfc | 587 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
588 | }, |
589 | { | |
3d8606a6 | 590 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 591 | .bitrate = 110, |
aa776721 | 592 | .ratemask = BIT(3), |
70e2fed4 | 593 | .plcp = 0x03, |
35f00cfc | 594 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
595 | }, |
596 | { | |
3d8606a6 | 597 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 598 | .bitrate = 60, |
aa776721 | 599 | .ratemask = BIT(4), |
70e2fed4 | 600 | .plcp = 0x0b, |
35f00cfc | 601 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
602 | }, |
603 | { | |
604 | .flags = DEV_RATE_OFDM, | |
605 | .bitrate = 90, | |
aa776721 | 606 | .ratemask = BIT(5), |
70e2fed4 | 607 | .plcp = 0x0f, |
35f00cfc | 608 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
609 | }, |
610 | { | |
3d8606a6 | 611 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 612 | .bitrate = 120, |
aa776721 | 613 | .ratemask = BIT(6), |
70e2fed4 | 614 | .plcp = 0x0a, |
35f00cfc | 615 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
616 | }, |
617 | { | |
618 | .flags = DEV_RATE_OFDM, | |
619 | .bitrate = 180, | |
aa776721 | 620 | .ratemask = BIT(7), |
70e2fed4 | 621 | .plcp = 0x0e, |
35f00cfc | 622 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
623 | }, |
624 | { | |
3d8606a6 | 625 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 626 | .bitrate = 240, |
aa776721 | 627 | .ratemask = BIT(8), |
70e2fed4 | 628 | .plcp = 0x09, |
35f00cfc | 629 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
630 | }, |
631 | { | |
632 | .flags = DEV_RATE_OFDM, | |
633 | .bitrate = 360, | |
aa776721 | 634 | .ratemask = BIT(9), |
70e2fed4 | 635 | .plcp = 0x0d, |
35f00cfc | 636 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
637 | }, |
638 | { | |
639 | .flags = DEV_RATE_OFDM, | |
640 | .bitrate = 480, | |
aa776721 | 641 | .ratemask = BIT(10), |
70e2fed4 | 642 | .plcp = 0x08, |
35f00cfc | 643 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
644 | }, |
645 | { | |
646 | .flags = DEV_RATE_OFDM, | |
647 | .bitrate = 540, | |
aa776721 | 648 | .ratemask = BIT(11), |
70e2fed4 | 649 | .plcp = 0x0c, |
35f00cfc | 650 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
651 | }, |
652 | }; | |
653 | ||
95ea3627 ID |
654 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
655 | const int channel, const int tx_power, | |
656 | const int value) | |
657 | { | |
59eb21a6 BR |
658 | /* XXX: this assumption about the band is wrong for 802.11j */ |
659 | entry->band = channel <= 14 ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
660 | entry->center_freq = ieee80211_channel_to_frequency(channel, | |
661 | entry->band); | |
8318d78a JB |
662 | entry->hw_value = value; |
663 | entry->max_power = tx_power; | |
664 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
665 | } |
666 | ||
667 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 668 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 669 | { |
70e2fed4 ID |
670 | entry->flags = 0; |
671 | entry->bitrate = rate->bitrate; | |
c2361bae | 672 | entry->hw_value = index; |
3ea96463 | 673 | entry->hw_value_short = index; |
70e2fed4 | 674 | |
3ea96463 | 675 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 676 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
677 | } |
678 | ||
679 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
680 | struct hw_mode_spec *spec) | |
681 | { | |
682 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
683 | struct ieee80211_channel *channels; |
684 | struct ieee80211_rate *rates; | |
31562e80 | 685 | unsigned int num_rates; |
95ea3627 | 686 | unsigned int i; |
95ea3627 | 687 | |
31562e80 ID |
688 | num_rates = 0; |
689 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
690 | num_rates += 4; | |
691 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
692 | num_rates += 8; | |
95ea3627 ID |
693 | |
694 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
695 | if (!channels) | |
8318d78a | 696 | return -ENOMEM; |
95ea3627 | 697 | |
31562e80 | 698 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
699 | if (!rates) |
700 | goto exit_free_channels; | |
701 | ||
702 | /* | |
703 | * Initialize Rate list. | |
704 | */ | |
31562e80 | 705 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 706 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
707 | |
708 | /* | |
709 | * Initialize Channel list. | |
710 | */ | |
711 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 712 | rt2x00lib_channel(&channels[i], |
8c5e7a5f | 713 | spec->channels[i].channel, |
8d1331b3 | 714 | spec->channels_info[i].max_power, i); |
95ea3627 ID |
715 | } |
716 | ||
717 | /* | |
31562e80 | 718 | * Intitialize 802.11b, 802.11g |
95ea3627 | 719 | * Rates: CCK, OFDM. |
8318d78a | 720 | * Channels: 2.4 GHz |
95ea3627 | 721 | */ |
47ac2683 | 722 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
723 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
724 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
725 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
726 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
727 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
728 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
729 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
730 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
731 | } |
732 | ||
733 | /* | |
734 | * Intitialize 802.11a | |
735 | * Rates: OFDM. | |
736 | * Channels: OFDM, UNII, HiperLAN2. | |
737 | */ | |
47ac2683 | 738 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
739 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
740 | spec->num_channels - 14; | |
741 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
742 | num_rates - 4; | |
743 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
744 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
745 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
746 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
747 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
748 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
749 | } |
750 | ||
95ea3627 ID |
751 | return 0; |
752 | ||
8318d78a | 753 | exit_free_channels: |
95ea3627 | 754 | kfree(channels); |
95ea3627 ID |
755 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
756 | return -ENOMEM; | |
757 | } | |
758 | ||
759 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
760 | { | |
0262ab0d | 761 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
762 | ieee80211_unregister_hw(rt2x00dev->hw); |
763 | ||
8318d78a JB |
764 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
765 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
766 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
767 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
768 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 769 | } |
8c5e7a5f ID |
770 | |
771 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
772 | } |
773 | ||
774 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
775 | { | |
776 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
777 | int status; | |
778 | ||
0262ab0d ID |
779 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
780 | return 0; | |
781 | ||
95ea3627 ID |
782 | /* |
783 | * Initialize HW modes. | |
784 | */ | |
785 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
786 | if (status) | |
787 | return status; | |
788 | ||
61448f88 GW |
789 | /* |
790 | * Initialize HW fields. | |
791 | */ | |
792 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
793 | ||
e6218cc4 GW |
794 | /* |
795 | * Initialize extra TX headroom required. | |
796 | */ | |
7a4a77b7 GW |
797 | rt2x00dev->hw->extra_tx_headroom = |
798 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
799 | rt2x00dev->ops->extra_tx_headroom); | |
800 | ||
801 | /* | |
802 | * Take TX headroom required for alignment into account. | |
803 | */ | |
804 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
805 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
806 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
807 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 808 | |
96c3da7d HS |
809 | /* |
810 | * Allocate tx status FIFO for driver use. | |
811 | */ | |
5235189c | 812 | if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags)) { |
96c3da7d HS |
813 | /* |
814 | * Allocate txstatus fifo and tasklet, we use a size of 512 | |
815 | * for the kfifo which is big enough to store 512/4=128 tx | |
816 | * status reports. In the worst case (tx status for all tx | |
817 | * queues gets reported before we've got a chance to handle | |
818 | * them) 24*4=384 tx status reports need to be cached. | |
819 | */ | |
820 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, 512, | |
821 | GFP_KERNEL); | |
822 | if (status) | |
823 | return status; | |
96c3da7d HS |
824 | } |
825 | ||
c5c65761 HS |
826 | /* |
827 | * Initialize tasklets if used by the driver. Tasklets are | |
828 | * disabled until the interrupts are turned on. The driver | |
829 | * has to handle that. | |
830 | */ | |
831 | #define RT2X00_TASKLET_INIT(taskletname) \ | |
832 | if (rt2x00dev->ops->lib->taskletname) { \ | |
833 | tasklet_init(&rt2x00dev->taskletname, \ | |
834 | rt2x00dev->ops->lib->taskletname, \ | |
835 | (unsigned long)rt2x00dev); \ | |
836 | tasklet_disable(&rt2x00dev->taskletname); \ | |
837 | } | |
838 | ||
c8e15a1e | 839 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
c5c65761 HS |
840 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
841 | RT2X00_TASKLET_INIT(tbtt_tasklet); | |
842 | RT2X00_TASKLET_INIT(rxdone_tasklet); | |
843 | RT2X00_TASKLET_INIT(autowake_tasklet); | |
844 | ||
845 | #undef RT2X00_TASKLET_INIT | |
846 | ||
95ea3627 ID |
847 | /* |
848 | * Register HW. | |
849 | */ | |
850 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 851 | if (status) |
95ea3627 | 852 | return status; |
95ea3627 | 853 | |
0262ab0d | 854 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
855 | |
856 | return 0; | |
857 | } | |
858 | ||
859 | /* | |
860 | * Initialization/uninitialization handlers. | |
861 | */ | |
e37ea213 | 862 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 863 | { |
0262ab0d | 864 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
865 | return; |
866 | ||
867 | /* | |
1682fe6d | 868 | * Unregister extra components. |
95ea3627 ID |
869 | */ |
870 | rt2x00rfkill_unregister(rt2x00dev); | |
871 | ||
872 | /* | |
873 | * Allow the HW to uninitialize. | |
874 | */ | |
875 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
876 | ||
877 | /* | |
181d6902 | 878 | * Free allocated queue entries. |
95ea3627 | 879 | */ |
181d6902 | 880 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
881 | } |
882 | ||
e37ea213 | 883 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
884 | { |
885 | int status; | |
886 | ||
0262ab0d | 887 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
888 | return 0; |
889 | ||
890 | /* | |
181d6902 | 891 | * Allocate all queue entries. |
95ea3627 | 892 | */ |
181d6902 ID |
893 | status = rt2x00queue_initialize(rt2x00dev); |
894 | if (status) | |
95ea3627 | 895 | return status; |
95ea3627 ID |
896 | |
897 | /* | |
898 | * Initialize the device. | |
899 | */ | |
900 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
901 | if (status) { |
902 | rt2x00queue_uninitialize(rt2x00dev); | |
903 | return status; | |
904 | } | |
95ea3627 | 905 | |
0262ab0d | 906 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
907 | |
908 | /* | |
1682fe6d | 909 | * Register the extra components. |
95ea3627 | 910 | */ |
1682fe6d | 911 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
912 | |
913 | return 0; | |
95ea3627 ID |
914 | } |
915 | ||
e37ea213 ID |
916 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
917 | { | |
918 | int retval; | |
919 | ||
0262ab0d | 920 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
921 | return 0; |
922 | ||
923 | /* | |
924 | * If this is the first interface which is added, | |
925 | * we should load the firmware now. | |
926 | */ | |
9404ef34 ID |
927 | retval = rt2x00lib_load_firmware(rt2x00dev); |
928 | if (retval) | |
929 | return retval; | |
e37ea213 ID |
930 | |
931 | /* | |
932 | * Initialize the device. | |
933 | */ | |
934 | retval = rt2x00lib_initialize(rt2x00dev); | |
935 | if (retval) | |
936 | return retval; | |
937 | ||
6bb40dd1 ID |
938 | rt2x00dev->intf_ap_count = 0; |
939 | rt2x00dev->intf_sta_count = 0; | |
940 | rt2x00dev->intf_associated = 0; | |
941 | ||
bdfa500b ID |
942 | /* Enable the radio */ |
943 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
1f0280cb | 944 | if (retval) |
bdfa500b | 945 | return retval; |
bdfa500b | 946 | |
0262ab0d | 947 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
948 | |
949 | return 0; | |
950 | } | |
951 | ||
952 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
953 | { | |
0262ab0d | 954 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
955 | return; |
956 | ||
957 | /* | |
958 | * Perhaps we can add something smarter here, | |
959 | * but for now just disabling the radio should do. | |
960 | */ | |
961 | rt2x00lib_disable_radio(rt2x00dev); | |
962 | ||
6bb40dd1 ID |
963 | rt2x00dev->intf_ap_count = 0; |
964 | rt2x00dev->intf_sta_count = 0; | |
965 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
966 | } |
967 | ||
95ea3627 ID |
968 | /* |
969 | * driver allocation handlers. | |
970 | */ | |
95ea3627 ID |
971 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
972 | { | |
973 | int retval = -ENOMEM; | |
974 | ||
c5c65761 | 975 | spin_lock_init(&rt2x00dev->irqmask_lock); |
8ff48a8b ID |
976 | mutex_init(&rt2x00dev->csr_mutex); |
977 | ||
66f84d65 SC |
978 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
979 | ||
6bb40dd1 ID |
980 | /* |
981 | * Make room for rt2x00_intf inside the per-interface | |
982 | * structure ieee80211_vif. | |
983 | */ | |
984 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
985 | ||
3514a441 ID |
986 | /* |
987 | * Determine which operating modes are supported, all modes | |
988 | * which require beaconing, depend on the availability of | |
989 | * beacon entries. | |
990 | */ | |
991 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
992 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
993 | rt2x00dev->hw->wiphy->interface_modes |= | |
994 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 995 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
996 | BIT(NL80211_IFTYPE_MESH_POINT) | |
997 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 998 | |
9acd56d3 | 999 | /* |
0439f536 | 1000 | * Initialize work. |
9acd56d3 | 1001 | */ |
0439f536 ID |
1002 | rt2x00dev->workqueue = |
1003 | alloc_ordered_workqueue(wiphy_name(rt2x00dev->hw->wiphy), 0); | |
1004 | if (!rt2x00dev->workqueue) { | |
1005 | retval = -ENOMEM; | |
1006 | goto exit; | |
1007 | } | |
1008 | ||
9acd56d3 SB |
1009 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
1010 | ||
95ea3627 ID |
1011 | /* |
1012 | * Let the driver probe the device to detect the capabilities. | |
1013 | */ | |
1014 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
1015 | if (retval) { | |
1016 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
1017 | goto exit; | |
1018 | } | |
1019 | ||
95ea3627 | 1020 | /* |
181d6902 | 1021 | * Allocate queue array. |
95ea3627 | 1022 | */ |
181d6902 | 1023 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
1024 | if (retval) |
1025 | goto exit; | |
1026 | ||
1027 | /* | |
1028 | * Initialize ieee80211 structure. | |
1029 | */ | |
1030 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
1031 | if (retval) { | |
1032 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
1033 | goto exit; | |
1034 | } | |
1035 | ||
a9450b70 | 1036 | /* |
1682fe6d | 1037 | * Register extra components. |
a9450b70 | 1038 | */ |
84e3196f | 1039 | rt2x00link_register(rt2x00dev); |
a9450b70 | 1040 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
1041 | rt2x00debug_register(rt2x00dev); |
1042 | ||
1043 | return 0; | |
1044 | ||
1045 | exit: | |
1046 | rt2x00lib_remove_dev(rt2x00dev); | |
1047 | ||
1048 | return retval; | |
1049 | } | |
1050 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
1051 | ||
1052 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
1053 | { | |
0262ab0d | 1054 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 1055 | |
95ea3627 ID |
1056 | /* |
1057 | * Disable radio. | |
1058 | */ | |
1059 | rt2x00lib_disable_radio(rt2x00dev); | |
1060 | ||
d8cc8926 PR |
1061 | /* |
1062 | * Stop all work. | |
1063 | */ | |
d8cc8926 | 1064 | cancel_work_sync(&rt2x00dev->intf_work); |
7e613e16 ID |
1065 | cancel_work_sync(&rt2x00dev->rxdone_work); |
1066 | cancel_work_sync(&rt2x00dev->txdone_work); | |
0439f536 | 1067 | destroy_workqueue(rt2x00dev->workqueue); |
d8cc8926 | 1068 | |
96c3da7d HS |
1069 | /* |
1070 | * Free the tx status fifo. | |
1071 | */ | |
1072 | kfifo_free(&rt2x00dev->txstatus_fifo); | |
1073 | ||
1074 | /* | |
1075 | * Kill the tx status tasklet. | |
1076 | */ | |
1077 | tasklet_kill(&rt2x00dev->txstatus_tasklet); | |
e1f4e808 ID |
1078 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
1079 | tasklet_kill(&rt2x00dev->tbtt_tasklet); | |
1080 | tasklet_kill(&rt2x00dev->rxdone_tasklet); | |
1081 | tasklet_kill(&rt2x00dev->autowake_tasklet); | |
96c3da7d | 1082 | |
95ea3627 ID |
1083 | /* |
1084 | * Uninitialize device. | |
1085 | */ | |
1086 | rt2x00lib_uninitialize(rt2x00dev); | |
1087 | ||
1088 | /* | |
1682fe6d | 1089 | * Free extra components |
95ea3627 ID |
1090 | */ |
1091 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
1092 | rt2x00leds_unregister(rt2x00dev); |
1093 | ||
95ea3627 ID |
1094 | /* |
1095 | * Free ieee80211_hw memory. | |
1096 | */ | |
1097 | rt2x00lib_remove_hw(rt2x00dev); | |
1098 | ||
1099 | /* | |
1100 | * Free firmware image. | |
1101 | */ | |
1102 | rt2x00lib_free_firmware(rt2x00dev); | |
1103 | ||
1104 | /* | |
181d6902 | 1105 | * Free queue structures. |
95ea3627 | 1106 | */ |
181d6902 | 1107 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1108 | } |
1109 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1110 | ||
1111 | /* | |
1112 | * Device state handlers | |
1113 | */ | |
1114 | #ifdef CONFIG_PM | |
1115 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1116 | { | |
95ea3627 | 1117 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
1118 | |
1119 | /* | |
07126127 | 1120 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1121 | */ |
07126127 ID |
1122 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1123 | return 0; | |
95ea3627 ID |
1124 | |
1125 | /* | |
07126127 | 1126 | * Cleanup as much as possible. |
95ea3627 | 1127 | */ |
95ea3627 | 1128 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1129 | |
1130 | /* | |
1131 | * Suspend/disable extra components. | |
1132 | */ | |
a9450b70 | 1133 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1134 | rt2x00debug_deregister(rt2x00dev); |
1135 | ||
1136 | /* | |
9896322a ID |
1137 | * Set device mode to sleep for power management, |
1138 | * on some hardware this call seems to consistently fail. | |
1139 | * From the specifications it is hard to tell why it fails, | |
1140 | * and if this is a "bad thing". | |
1141 | * Overall it is safe to just ignore the failure and | |
1142 | * continue suspending. The only downside is that the | |
1143 | * device will not be in optimal power save mode, but with | |
1144 | * the radio and the other components already disabled the | |
1145 | * device is as good as disabled. | |
95ea3627 | 1146 | */ |
07126127 | 1147 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
1148 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1149 | "continue suspending.\n"); | |
95ea3627 ID |
1150 | |
1151 | return 0; | |
1152 | } | |
1153 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1154 | ||
1155 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1156 | { | |
95ea3627 | 1157 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
1158 | |
1159 | /* | |
1682fe6d | 1160 | * Restore/enable extra components. |
95ea3627 ID |
1161 | */ |
1162 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1163 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1164 | |
e37ea213 ID |
1165 | /* |
1166 | * We are ready again to receive requests from mac80211. | |
1167 | */ | |
0262ab0d | 1168 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1169 | |
95ea3627 | 1170 | return 0; |
95ea3627 ID |
1171 | } |
1172 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1173 | #endif /* CONFIG_PM */ | |
1174 | ||
1175 | /* | |
1176 | * rt2x00lib module information. | |
1177 | */ | |
1178 | MODULE_AUTHOR(DRV_PROJECT); | |
1179 | MODULE_VERSION(DRV_VERSION); | |
1180 | MODULE_DESCRIPTION("rt2x00 library"); | |
1181 | MODULE_LICENSE("GPL"); |