Commit | Line | Data |
---|---|---|
95ea3627 | 1 | /* |
9c9a0d14 | 2 | Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00lib | |
23 | Abstract: rt2x00 generic device routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
95ea3627 ID |
32 | /* |
33 | * Radio control handlers. | |
34 | */ | |
35 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
36 | { | |
37 | int status; | |
38 | ||
39 | /* | |
40 | * Don't enable the radio twice. | |
41 | * And check if the hardware button has been disabled. | |
42 | */ | |
4b9631a4 | 43 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
44 | return 0; |
45 | ||
837e7f24 | 46 | /* |
181d6902 | 47 | * Initialize all data queues. |
837e7f24 | 48 | */ |
798b7adb | 49 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 50 | |
95ea3627 ID |
51 | /* |
52 | * Enable radio. | |
53 | */ | |
a2e1d52a ID |
54 | status = |
55 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
56 | if (status) |
57 | return status; | |
58 | ||
2b08da3f ID |
59 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
60 | ||
a2e1d52a | 61 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 62 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 63 | |
0262ab0d | 64 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
65 | |
66 | /* | |
67 | * Enable RX. | |
68 | */ | |
5cbf830e | 69 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
70 | |
71 | /* | |
72 | * Start the TX queues. | |
73 | */ | |
36d6825b | 74 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
75 | |
76 | return 0; | |
77 | } | |
78 | ||
79 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
80 | { | |
0262ab0d | 81 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
82 | return; |
83 | ||
95ea3627 | 84 | /* |
a2c9b652 | 85 | * Stop the TX queues in mac80211. |
95ea3627 ID |
86 | */ |
87 | ieee80211_stop_queues(rt2x00dev->hw); | |
a2c9b652 | 88 | rt2x00queue_stop_queues(rt2x00dev); |
95ea3627 ID |
89 | |
90 | /* | |
91 | * Disable RX. | |
92 | */ | |
5cbf830e | 93 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
94 | |
95 | /* | |
96 | * Disable radio. | |
97 | */ | |
98 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 99 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 100 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 101 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
102 | } |
103 | ||
5cbf830e | 104 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 105 | { |
95ea3627 ID |
106 | /* |
107 | * When we are disabling the RX, we should also stop the link tuner. | |
108 | */ | |
5cbf830e | 109 | if (state == STATE_RADIO_RX_OFF) |
84e3196f | 110 | rt2x00link_stop_tuner(rt2x00dev); |
95ea3627 ID |
111 | |
112 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
113 | ||
114 | /* | |
115 | * When we are enabling the RX, we should also start the link tuner. | |
116 | */ | |
84e3196f ID |
117 | if (state == STATE_RADIO_RX_ON) |
118 | rt2x00link_start_tuner(rt2x00dev); | |
95ea3627 ID |
119 | } |
120 | ||
6bb40dd1 ID |
121 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
122 | struct ieee80211_vif *vif) | |
5c58ee51 | 123 | { |
6bb40dd1 ID |
124 | struct rt2x00_dev *rt2x00dev = data; |
125 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
126 | int delayed_flags; |
127 | ||
128 | /* | |
129 | * Copy all data we need during this action under the protection | |
130 | * of a spinlock. Otherwise race conditions might occur which results | |
131 | * into an invalid configuration. | |
132 | */ | |
133 | spin_lock(&intf->lock); | |
134 | ||
6bb40dd1 ID |
135 | delayed_flags = intf->delayed_flags; |
136 | intf->delayed_flags = 0; | |
137 | ||
138 | spin_unlock(&intf->lock); | |
139 | ||
980dfcb9 ID |
140 | /* |
141 | * It is possible the radio was disabled while the work had been | |
142 | * scheduled. If that happens we should return here immediately, | |
143 | * note that in the spinlock protected area above the delayed_flags | |
144 | * have been cleared correctly. | |
145 | */ | |
0262ab0d | 146 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
147 | return; |
148 | ||
bd88a781 | 149 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
a2c9b652 | 150 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
6bb40dd1 | 151 | } |
5c58ee51 | 152 | |
6bb40dd1 ID |
153 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
154 | { | |
155 | struct rt2x00_dev *rt2x00dev = | |
156 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
157 | |
158 | /* | |
6bb40dd1 ID |
159 | * Iterate over each interface and perform the |
160 | * requested configurations. | |
471b3efd | 161 | */ |
6bb40dd1 ID |
162 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
163 | rt2x00lib_intf_scheduled_iter, | |
164 | rt2x00dev); | |
5c58ee51 ID |
165 | } |
166 | ||
95ea3627 ID |
167 | /* |
168 | * Interrupt context handlers. | |
169 | */ | |
6bb40dd1 ID |
170 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
171 | struct ieee80211_vif *vif) | |
95ea3627 | 172 | { |
6bb40dd1 | 173 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 174 | |
05c914fe | 175 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 176 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
177 | vif->type != NL80211_IFTYPE_MESH_POINT && |
178 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
179 | return; |
180 | ||
6bb40dd1 ID |
181 | spin_lock(&intf->lock); |
182 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
183 | spin_unlock(&intf->lock); | |
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 | ||
633257d3 ID |
191 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
192 | rt2x00lib_beacondone_iter, | |
193 | rt2x00dev); | |
6bb40dd1 | 194 | |
42935eca | 195 | ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work); |
95ea3627 ID |
196 | } |
197 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
198 | ||
181d6902 ID |
199 | void rt2x00lib_txdone(struct queue_entry *entry, |
200 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 201 | { |
181d6902 | 202 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 203 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 204 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 205 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
9f166171 | 206 | unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
92ed48e5 | 207 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 208 | u8 skbdesc_flags = skbdesc->flags; |
92ed48e5 | 209 | unsigned int i; |
2e27cff8 | 210 | bool success; |
d74f5ba4 ID |
211 | |
212 | /* | |
213 | * Unmap the skb. | |
214 | */ | |
215 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a | 216 | |
9f166171 ID |
217 | /* |
218 | * Remove L2 padding which was added during | |
219 | */ | |
220 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 221 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 222 | |
2bb057d0 ID |
223 | /* |
224 | * If the IV/EIV data was stripped from the frame before it was | |
225 | * passed to the hardware, we should now reinsert it again because | |
226 | * mac80211 will expect the the same data to be present it the | |
227 | * frame as it was passed to us. | |
228 | */ | |
229 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 230 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 231 | |
e039fa4a JB |
232 | /* |
233 | * Send frame to debugfs immediately, after this call is completed | |
234 | * we are going to overwrite the skb->cb array. | |
235 | */ | |
236 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
237 | |
238 | /* | |
2e27cff8 | 239 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 240 | */ |
2e27cff8 | 241 | success = |
ce4c45e0 | 242 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
2e27cff8 ID |
243 | test_bit(TXDONE_UNKNOWN, &txdesc->flags) || |
244 | test_bit(TXDONE_FALLBACK, &txdesc->flags); | |
245 | ||
246 | /* | |
247 | * Update TX statistics. | |
248 | */ | |
249 | rt2x00dev->link.qual.tx_success += success; | |
250 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 251 | |
e6a9854b JB |
252 | rate_idx = skbdesc->tx_rate_idx; |
253 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
254 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
255 | (txdesc->retry + 1) : 1; | |
e6a9854b | 256 | |
181d6902 ID |
257 | /* |
258 | * Initialize TX status | |
259 | */ | |
e039fa4a JB |
260 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
261 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
262 | |
263 | /* | |
264 | * Frame was send with retries, hardware tried | |
265 | * different rates to send out the frame, at each | |
266 | * retry it lowered the rate 1 step. | |
267 | */ | |
268 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
269 | tx_info->status.rates[i].idx = rate_idx - i; | |
270 | tx_info->status.rates[i].flags = rate_flags; | |
271 | tx_info->status.rates[i].count = 1; | |
272 | } | |
2e27cff8 | 273 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 274 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 275 | |
e039fa4a | 276 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 277 | if (success) |
e039fa4a | 278 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 279 | else |
181d6902 | 280 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
281 | } |
282 | ||
e6a9854b | 283 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 284 | if (success) |
181d6902 | 285 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 286 | else |
181d6902 | 287 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
288 | } |
289 | ||
290 | /* | |
7351c6bd JB |
291 | * Only send the status report to mac80211 when it's a frame |
292 | * that originated in mac80211. If this was a extra frame coming | |
293 | * through a mac80211 library call (RTS/CTS) then we should not | |
294 | * send the status report back. | |
95ea3627 | 295 | */ |
7351c6bd | 296 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
e039fa4a | 297 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); |
baf26a7e | 298 | else |
fb55f4d1 | 299 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
300 | |
301 | /* | |
302 | * Make this entry available for reuse. | |
303 | */ | |
95ea3627 | 304 | entry->skb = NULL; |
d74f5ba4 ID |
305 | entry->flags = 0; |
306 | ||
798b7adb | 307 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 308 | |
0262ab0d | 309 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
310 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
311 | ||
312 | /* | |
313 | * If the data queue was below the threshold before the txdone | |
314 | * handler we must make sure the packet queue in the mac80211 stack | |
315 | * is reenabled when the txdone handler has finished. | |
316 | */ | |
317 | if (!rt2x00queue_threshold(entry->queue)) | |
318 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
319 | } |
320 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
321 | ||
35f00cfc ID |
322 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
323 | struct rxdone_entry_desc *rxdesc) | |
324 | { | |
325 | struct ieee80211_supported_band *sband; | |
326 | const struct rt2x00_rate *rate; | |
327 | unsigned int i; | |
328 | int signal; | |
329 | int type; | |
330 | ||
331 | /* | |
332 | * For non-HT rates the MCS value needs to contain the | |
333 | * actually used rate modulation (CCK or OFDM). | |
334 | */ | |
335 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
336 | signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); | |
337 | else | |
338 | signal = rxdesc->signal; | |
339 | ||
340 | type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
341 | ||
342 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
343 | for (i = 0; i < sband->n_bitrates; i++) { | |
344 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
345 | ||
346 | if (((type == RXDONE_SIGNAL_PLCP) && | |
347 | (rate->plcp == signal)) || | |
348 | ((type == RXDONE_SIGNAL_BITRATE) && | |
349 | (rate->bitrate == signal)) || | |
350 | ((type == RXDONE_SIGNAL_MCS) && | |
351 | (rate->mcs == signal))) { | |
352 | return i; | |
353 | } | |
354 | } | |
355 | ||
356 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
357 | "signal=0x%.4x, type=%d.\n", signal, type); | |
358 | return 0; | |
359 | } | |
360 | ||
c4da0048 GW |
361 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
362 | struct queue_entry *entry) | |
95ea3627 | 363 | { |
c4da0048 GW |
364 | struct rxdone_entry_desc rxdesc; |
365 | struct sk_buff *skb; | |
95ea3627 | 366 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
2bb057d0 | 367 | unsigned int header_length; |
35f00cfc | 368 | int rate_idx; |
c4da0048 GW |
369 | /* |
370 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
371 | * received frame and reuse the existing buffer. | |
372 | */ | |
373 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
374 | if (!skb) | |
375 | return; | |
376 | ||
377 | /* | |
378 | * Unmap the skb. | |
379 | */ | |
380 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
381 | ||
382 | /* | |
383 | * Extract the RXD details. | |
384 | */ | |
385 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
386 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 387 | |
239c249d GW |
388 | /* |
389 | * The data behind the ieee80211 header must be | |
a9f853dd | 390 | * aligned on a 4 byte boundary. |
239c249d | 391 | */ |
2bb057d0 | 392 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 393 | |
2bb057d0 ID |
394 | /* |
395 | * Hardware might have stripped the IV/EIV/ICV data, | |
396 | * in that case it is possible that the data was | |
3ad2f3fb | 397 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
398 | * in which case we should reinsert the data into the frame. |
399 | */ | |
74415edb | 400 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 401 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 402 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 403 | &rxdesc); |
b7340833 GW |
404 | else if (header_length && |
405 | (rxdesc.size > header_length) && | |
406 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 407 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 408 | else |
daee6c09 | 409 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 410 | |
1398d458 AB |
411 | /* Trim buffer to correct size */ |
412 | skb_trim(entry->skb, rxdesc.size); | |
413 | ||
95ea3627 | 414 | /* |
35f00cfc ID |
415 | * Check if the frame was received using HT. In that case, |
416 | * the rate is the MCS index and should be passed to mac80211 | |
417 | * directly. Otherwise we need to translate the signal to | |
418 | * the correct bitrate index. | |
95ea3627 | 419 | */ |
35f00cfc ID |
420 | if (rxdesc.rate_mode == RATE_MODE_CCK || |
421 | rxdesc.rate_mode == RATE_MODE_OFDM) { | |
422 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); | |
423 | } else { | |
424 | rxdesc.flags |= RX_FLAG_HT; | |
425 | rate_idx = rxdesc.signal; | |
866a0503 ID |
426 | } |
427 | ||
61af43c5 | 428 | /* |
84e3196f | 429 | * Update extra components |
61af43c5 | 430 | */ |
84e3196f ID |
431 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
432 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
69f81a2c | 433 | |
ae73e58e | 434 | rx_status->mactime = rxdesc.timestamp; |
35f00cfc | 435 | rx_status->rate_idx = rate_idx; |
c4da0048 | 436 | rx_status->signal = rxdesc.rssi; |
2bdb35c7 | 437 | rx_status->noise = rxdesc.noise; |
c4da0048 | 438 | rx_status->flag = rxdesc.flags; |
69f81a2c | 439 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
440 | |
441 | /* | |
181d6902 ID |
442 | * Send frame to mac80211 & debugfs. |
443 | * mac80211 will clean up the skb structure. | |
95ea3627 | 444 | */ |
5a6e5999 | 445 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
f1d58c25 JB |
446 | memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status)); |
447 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb); | |
c4da0048 GW |
448 | |
449 | /* | |
450 | * Replace the skb with the freshly allocated one. | |
451 | */ | |
452 | entry->skb = skb; | |
d74f5ba4 ID |
453 | entry->flags = 0; |
454 | ||
798b7adb | 455 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
456 | |
457 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
458 | } |
459 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
460 | ||
95ea3627 ID |
461 | /* |
462 | * Driver initialization handlers. | |
463 | */ | |
70e2fed4 ID |
464 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
465 | { | |
3d8606a6 | 466 | .flags = DEV_RATE_CCK, |
70e2fed4 | 467 | .bitrate = 10, |
aa776721 | 468 | .ratemask = BIT(0), |
70e2fed4 | 469 | .plcp = 0x00, |
35f00cfc | 470 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
471 | }, |
472 | { | |
3d8606a6 | 473 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 474 | .bitrate = 20, |
aa776721 | 475 | .ratemask = BIT(1), |
70e2fed4 | 476 | .plcp = 0x01, |
35f00cfc | 477 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
478 | }, |
479 | { | |
3d8606a6 | 480 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 481 | .bitrate = 55, |
aa776721 | 482 | .ratemask = BIT(2), |
70e2fed4 | 483 | .plcp = 0x02, |
35f00cfc | 484 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
485 | }, |
486 | { | |
3d8606a6 | 487 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 488 | .bitrate = 110, |
aa776721 | 489 | .ratemask = BIT(3), |
70e2fed4 | 490 | .plcp = 0x03, |
35f00cfc | 491 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
492 | }, |
493 | { | |
3d8606a6 | 494 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 495 | .bitrate = 60, |
aa776721 | 496 | .ratemask = BIT(4), |
70e2fed4 | 497 | .plcp = 0x0b, |
35f00cfc | 498 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
499 | }, |
500 | { | |
501 | .flags = DEV_RATE_OFDM, | |
502 | .bitrate = 90, | |
aa776721 | 503 | .ratemask = BIT(5), |
70e2fed4 | 504 | .plcp = 0x0f, |
35f00cfc | 505 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
506 | }, |
507 | { | |
3d8606a6 | 508 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 509 | .bitrate = 120, |
aa776721 | 510 | .ratemask = BIT(6), |
70e2fed4 | 511 | .plcp = 0x0a, |
35f00cfc | 512 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
513 | }, |
514 | { | |
515 | .flags = DEV_RATE_OFDM, | |
516 | .bitrate = 180, | |
aa776721 | 517 | .ratemask = BIT(7), |
70e2fed4 | 518 | .plcp = 0x0e, |
35f00cfc | 519 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
520 | }, |
521 | { | |
3d8606a6 | 522 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 523 | .bitrate = 240, |
aa776721 | 524 | .ratemask = BIT(8), |
70e2fed4 | 525 | .plcp = 0x09, |
35f00cfc | 526 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
527 | }, |
528 | { | |
529 | .flags = DEV_RATE_OFDM, | |
530 | .bitrate = 360, | |
aa776721 | 531 | .ratemask = BIT(9), |
70e2fed4 | 532 | .plcp = 0x0d, |
35f00cfc | 533 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
534 | }, |
535 | { | |
536 | .flags = DEV_RATE_OFDM, | |
537 | .bitrate = 480, | |
aa776721 | 538 | .ratemask = BIT(10), |
70e2fed4 | 539 | .plcp = 0x08, |
35f00cfc | 540 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
541 | }, |
542 | { | |
543 | .flags = DEV_RATE_OFDM, | |
544 | .bitrate = 540, | |
aa776721 | 545 | .ratemask = BIT(11), |
70e2fed4 | 546 | .plcp = 0x0c, |
35f00cfc | 547 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
548 | }, |
549 | }; | |
550 | ||
95ea3627 ID |
551 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
552 | const int channel, const int tx_power, | |
553 | const int value) | |
554 | { | |
f2a3c7f5 | 555 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
556 | entry->hw_value = value; |
557 | entry->max_power = tx_power; | |
558 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
559 | } |
560 | ||
561 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 562 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 563 | { |
70e2fed4 ID |
564 | entry->flags = 0; |
565 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
566 | entry->hw_value =index; |
567 | entry->hw_value_short = index; | |
70e2fed4 | 568 | |
3ea96463 | 569 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 570 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
571 | } |
572 | ||
573 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
574 | struct hw_mode_spec *spec) | |
575 | { | |
576 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
577 | struct ieee80211_channel *channels; |
578 | struct ieee80211_rate *rates; | |
31562e80 | 579 | unsigned int num_rates; |
95ea3627 | 580 | unsigned int i; |
95ea3627 | 581 | |
31562e80 ID |
582 | num_rates = 0; |
583 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
584 | num_rates += 4; | |
585 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
586 | num_rates += 8; | |
95ea3627 ID |
587 | |
588 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
589 | if (!channels) | |
8318d78a | 590 | return -ENOMEM; |
95ea3627 | 591 | |
31562e80 | 592 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
593 | if (!rates) |
594 | goto exit_free_channels; | |
595 | ||
596 | /* | |
597 | * Initialize Rate list. | |
598 | */ | |
31562e80 | 599 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 600 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
601 | |
602 | /* | |
603 | * Initialize Channel list. | |
604 | */ | |
605 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 606 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
607 | spec->channels[i].channel, |
608 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
609 | } |
610 | ||
611 | /* | |
31562e80 | 612 | * Intitialize 802.11b, 802.11g |
95ea3627 | 613 | * Rates: CCK, OFDM. |
8318d78a | 614 | * Channels: 2.4 GHz |
95ea3627 | 615 | */ |
47ac2683 | 616 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
617 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
618 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
619 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
620 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
621 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
622 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
623 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
624 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
625 | } |
626 | ||
627 | /* | |
628 | * Intitialize 802.11a | |
629 | * Rates: OFDM. | |
630 | * Channels: OFDM, UNII, HiperLAN2. | |
631 | */ | |
47ac2683 | 632 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
633 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
634 | spec->num_channels - 14; | |
635 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
636 | num_rates - 4; | |
637 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
638 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
639 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
640 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
641 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
642 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
643 | } |
644 | ||
95ea3627 ID |
645 | return 0; |
646 | ||
8318d78a | 647 | exit_free_channels: |
95ea3627 | 648 | kfree(channels); |
95ea3627 ID |
649 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
650 | return -ENOMEM; | |
651 | } | |
652 | ||
653 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
654 | { | |
0262ab0d | 655 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
656 | ieee80211_unregister_hw(rt2x00dev->hw); |
657 | ||
8318d78a JB |
658 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
659 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
660 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
661 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
662 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 663 | } |
8c5e7a5f ID |
664 | |
665 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
666 | } |
667 | ||
668 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
669 | { | |
670 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
671 | int status; | |
672 | ||
0262ab0d ID |
673 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
674 | return 0; | |
675 | ||
95ea3627 ID |
676 | /* |
677 | * Initialize HW modes. | |
678 | */ | |
679 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
680 | if (status) | |
681 | return status; | |
682 | ||
61448f88 GW |
683 | /* |
684 | * Initialize HW fields. | |
685 | */ | |
686 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
687 | ||
e6218cc4 GW |
688 | /* |
689 | * Initialize extra TX headroom required. | |
690 | */ | |
7a4a77b7 GW |
691 | rt2x00dev->hw->extra_tx_headroom = |
692 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
693 | rt2x00dev->ops->extra_tx_headroom); | |
694 | ||
695 | /* | |
696 | * Take TX headroom required for alignment into account. | |
697 | */ | |
698 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
699 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
700 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
701 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 702 | |
95ea3627 ID |
703 | /* |
704 | * Register HW. | |
705 | */ | |
706 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 707 | if (status) |
95ea3627 | 708 | return status; |
95ea3627 | 709 | |
0262ab0d | 710 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
711 | |
712 | return 0; | |
713 | } | |
714 | ||
715 | /* | |
716 | * Initialization/uninitialization handlers. | |
717 | */ | |
e37ea213 | 718 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 719 | { |
0262ab0d | 720 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
721 | return; |
722 | ||
723 | /* | |
1682fe6d | 724 | * Unregister extra components. |
95ea3627 ID |
725 | */ |
726 | rt2x00rfkill_unregister(rt2x00dev); | |
727 | ||
728 | /* | |
729 | * Allow the HW to uninitialize. | |
730 | */ | |
731 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
732 | ||
733 | /* | |
181d6902 | 734 | * Free allocated queue entries. |
95ea3627 | 735 | */ |
181d6902 | 736 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
737 | } |
738 | ||
e37ea213 | 739 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
740 | { |
741 | int status; | |
742 | ||
0262ab0d | 743 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
744 | return 0; |
745 | ||
746 | /* | |
181d6902 | 747 | * Allocate all queue entries. |
95ea3627 | 748 | */ |
181d6902 ID |
749 | status = rt2x00queue_initialize(rt2x00dev); |
750 | if (status) | |
95ea3627 | 751 | return status; |
95ea3627 ID |
752 | |
753 | /* | |
754 | * Initialize the device. | |
755 | */ | |
756 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
757 | if (status) { |
758 | rt2x00queue_uninitialize(rt2x00dev); | |
759 | return status; | |
760 | } | |
95ea3627 | 761 | |
0262ab0d | 762 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
763 | |
764 | /* | |
1682fe6d | 765 | * Register the extra components. |
95ea3627 | 766 | */ |
1682fe6d | 767 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
768 | |
769 | return 0; | |
95ea3627 ID |
770 | } |
771 | ||
e37ea213 ID |
772 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
773 | { | |
774 | int retval; | |
775 | ||
0262ab0d | 776 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
777 | return 0; |
778 | ||
779 | /* | |
780 | * If this is the first interface which is added, | |
781 | * we should load the firmware now. | |
782 | */ | |
9404ef34 ID |
783 | retval = rt2x00lib_load_firmware(rt2x00dev); |
784 | if (retval) | |
785 | return retval; | |
e37ea213 ID |
786 | |
787 | /* | |
788 | * Initialize the device. | |
789 | */ | |
790 | retval = rt2x00lib_initialize(rt2x00dev); | |
791 | if (retval) | |
792 | return retval; | |
793 | ||
6bb40dd1 ID |
794 | rt2x00dev->intf_ap_count = 0; |
795 | rt2x00dev->intf_sta_count = 0; | |
796 | rt2x00dev->intf_associated = 0; | |
797 | ||
bdfa500b ID |
798 | /* Enable the radio */ |
799 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
800 | if (retval) { | |
801 | rt2x00queue_uninitialize(rt2x00dev); | |
802 | return retval; | |
803 | } | |
804 | ||
0262ab0d | 805 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
806 | |
807 | return 0; | |
808 | } | |
809 | ||
810 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
811 | { | |
0262ab0d | 812 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
813 | return; |
814 | ||
815 | /* | |
816 | * Perhaps we can add something smarter here, | |
817 | * but for now just disabling the radio should do. | |
818 | */ | |
819 | rt2x00lib_disable_radio(rt2x00dev); | |
820 | ||
6bb40dd1 ID |
821 | rt2x00dev->intf_ap_count = 0; |
822 | rt2x00dev->intf_sta_count = 0; | |
823 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
824 | } |
825 | ||
95ea3627 ID |
826 | /* |
827 | * driver allocation handlers. | |
828 | */ | |
95ea3627 ID |
829 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
830 | { | |
831 | int retval = -ENOMEM; | |
832 | ||
8ff48a8b ID |
833 | mutex_init(&rt2x00dev->csr_mutex); |
834 | ||
66f84d65 SC |
835 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
836 | ||
6bb40dd1 ID |
837 | /* |
838 | * Make room for rt2x00_intf inside the per-interface | |
839 | * structure ieee80211_vif. | |
840 | */ | |
841 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
842 | ||
3514a441 ID |
843 | /* |
844 | * Determine which operating modes are supported, all modes | |
845 | * which require beaconing, depend on the availability of | |
846 | * beacon entries. | |
847 | */ | |
848 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
849 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
850 | rt2x00dev->hw->wiphy->interface_modes |= | |
851 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 852 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
853 | BIT(NL80211_IFTYPE_MESH_POINT) | |
854 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 855 | |
95ea3627 ID |
856 | /* |
857 | * Let the driver probe the device to detect the capabilities. | |
858 | */ | |
859 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
860 | if (retval) { | |
861 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
862 | goto exit; | |
863 | } | |
864 | ||
865 | /* | |
866 | * Initialize configuration work. | |
867 | */ | |
6bb40dd1 | 868 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
95ea3627 | 869 | |
95ea3627 | 870 | /* |
181d6902 | 871 | * Allocate queue array. |
95ea3627 | 872 | */ |
181d6902 | 873 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
874 | if (retval) |
875 | goto exit; | |
876 | ||
877 | /* | |
878 | * Initialize ieee80211 structure. | |
879 | */ | |
880 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
881 | if (retval) { | |
882 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
883 | goto exit; | |
884 | } | |
885 | ||
a9450b70 | 886 | /* |
1682fe6d | 887 | * Register extra components. |
a9450b70 | 888 | */ |
84e3196f | 889 | rt2x00link_register(rt2x00dev); |
a9450b70 | 890 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
891 | rt2x00debug_register(rt2x00dev); |
892 | ||
893 | return 0; | |
894 | ||
895 | exit: | |
896 | rt2x00lib_remove_dev(rt2x00dev); | |
897 | ||
898 | return retval; | |
899 | } | |
900 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
901 | ||
902 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
903 | { | |
0262ab0d | 904 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 905 | |
95ea3627 ID |
906 | /* |
907 | * Disable radio. | |
908 | */ | |
909 | rt2x00lib_disable_radio(rt2x00dev); | |
910 | ||
d8cc8926 PR |
911 | /* |
912 | * Stop all work. | |
913 | */ | |
d8cc8926 PR |
914 | cancel_work_sync(&rt2x00dev->intf_work); |
915 | ||
95ea3627 ID |
916 | /* |
917 | * Uninitialize device. | |
918 | */ | |
919 | rt2x00lib_uninitialize(rt2x00dev); | |
920 | ||
921 | /* | |
1682fe6d | 922 | * Free extra components |
95ea3627 ID |
923 | */ |
924 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
925 | rt2x00leds_unregister(rt2x00dev); |
926 | ||
95ea3627 ID |
927 | /* |
928 | * Free ieee80211_hw memory. | |
929 | */ | |
930 | rt2x00lib_remove_hw(rt2x00dev); | |
931 | ||
932 | /* | |
933 | * Free firmware image. | |
934 | */ | |
935 | rt2x00lib_free_firmware(rt2x00dev); | |
936 | ||
937 | /* | |
181d6902 | 938 | * Free queue structures. |
95ea3627 | 939 | */ |
181d6902 | 940 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
941 | } |
942 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
943 | ||
944 | /* | |
945 | * Device state handlers | |
946 | */ | |
947 | #ifdef CONFIG_PM | |
948 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
949 | { | |
95ea3627 | 950 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
951 | |
952 | /* | |
07126127 | 953 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 954 | */ |
07126127 ID |
955 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
956 | return 0; | |
95ea3627 ID |
957 | |
958 | /* | |
07126127 | 959 | * Cleanup as much as possible. |
95ea3627 | 960 | */ |
95ea3627 | 961 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
962 | |
963 | /* | |
964 | * Suspend/disable extra components. | |
965 | */ | |
a9450b70 | 966 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
967 | rt2x00debug_deregister(rt2x00dev); |
968 | ||
969 | /* | |
9896322a ID |
970 | * Set device mode to sleep for power management, |
971 | * on some hardware this call seems to consistently fail. | |
972 | * From the specifications it is hard to tell why it fails, | |
973 | * and if this is a "bad thing". | |
974 | * Overall it is safe to just ignore the failure and | |
975 | * continue suspending. The only downside is that the | |
976 | * device will not be in optimal power save mode, but with | |
977 | * the radio and the other components already disabled the | |
978 | * device is as good as disabled. | |
95ea3627 | 979 | */ |
07126127 | 980 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
981 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
982 | "continue suspending.\n"); | |
95ea3627 ID |
983 | |
984 | return 0; | |
985 | } | |
986 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
987 | ||
988 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
989 | { | |
95ea3627 | 990 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
991 | |
992 | /* | |
1682fe6d | 993 | * Restore/enable extra components. |
95ea3627 ID |
994 | */ |
995 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 996 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 997 | |
e37ea213 ID |
998 | /* |
999 | * We are ready again to receive requests from mac80211. | |
1000 | */ | |
0262ab0d | 1001 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1002 | |
95ea3627 | 1003 | return 0; |
95ea3627 ID |
1004 | } |
1005 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1006 | #endif /* CONFIG_PM */ | |
1007 | ||
1008 | /* | |
1009 | * rt2x00lib module information. | |
1010 | */ | |
1011 | MODULE_AUTHOR(DRV_PROJECT); | |
1012 | MODULE_VERSION(DRV_VERSION); | |
1013 | MODULE_DESCRIPTION("rt2x00 library"); | |
1014 | MODULE_LICENSE("GPL"); |