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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> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
95ea3627 ID |
29 | |
30 | #include "rt2x00.h" | |
31 | #include "rt2x00lib.h" | |
32 | ||
95ea3627 ID |
33 | /* |
34 | * Radio control handlers. | |
35 | */ | |
36 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
37 | { | |
38 | int status; | |
39 | ||
40 | /* | |
41 | * Don't enable the radio twice. | |
42 | * And check if the hardware button has been disabled. | |
43 | */ | |
4b9631a4 | 44 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
45 | return 0; |
46 | ||
837e7f24 | 47 | /* |
181d6902 | 48 | * Initialize all data queues. |
837e7f24 | 49 | */ |
798b7adb | 50 | rt2x00queue_init_queues(rt2x00dev); |
837e7f24 | 51 | |
95ea3627 ID |
52 | /* |
53 | * Enable radio. | |
54 | */ | |
a2e1d52a ID |
55 | status = |
56 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); | |
95ea3627 ID |
57 | if (status) |
58 | return status; | |
59 | ||
2b08da3f ID |
60 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
61 | ||
a2e1d52a | 62 | rt2x00leds_led_radio(rt2x00dev, true); |
61c2b682 | 63 | rt2x00led_led_activity(rt2x00dev, true); |
a2e1d52a | 64 | |
0262ab0d | 65 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
95ea3627 ID |
66 | |
67 | /* | |
68 | * Enable RX. | |
69 | */ | |
5cbf830e | 70 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
71 | |
72 | /* | |
73 | * Start the TX queues. | |
74 | */ | |
36d6825b | 75 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
76 | |
77 | return 0; | |
78 | } | |
79 | ||
80 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
81 | { | |
0262ab0d | 82 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
83 | return; |
84 | ||
95ea3627 | 85 | /* |
a2c9b652 | 86 | * Stop the TX queues in mac80211. |
95ea3627 ID |
87 | */ |
88 | ieee80211_stop_queues(rt2x00dev->hw); | |
a2c9b652 | 89 | rt2x00queue_stop_queues(rt2x00dev); |
95ea3627 ID |
90 | |
91 | /* | |
92 | * Disable RX. | |
93 | */ | |
5cbf830e | 94 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
95 | |
96 | /* | |
97 | * Disable radio. | |
98 | */ | |
99 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 100 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 101 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 102 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
103 | } |
104 | ||
5cbf830e | 105 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 106 | { |
95ea3627 ID |
107 | /* |
108 | * When we are disabling the RX, we should also stop the link tuner. | |
109 | */ | |
5cbf830e | 110 | if (state == STATE_RADIO_RX_OFF) |
84e3196f | 111 | rt2x00link_stop_tuner(rt2x00dev); |
95ea3627 ID |
112 | |
113 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
114 | ||
115 | /* | |
116 | * When we are enabling the RX, we should also start the link tuner. | |
117 | */ | |
84e3196f ID |
118 | if (state == STATE_RADIO_RX_ON) |
119 | rt2x00link_start_tuner(rt2x00dev); | |
95ea3627 ID |
120 | } |
121 | ||
6bb40dd1 ID |
122 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
123 | struct ieee80211_vif *vif) | |
5c58ee51 | 124 | { |
6bb40dd1 ID |
125 | struct rt2x00_dev *rt2x00dev = data; |
126 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
127 | int delayed_flags; |
128 | ||
129 | /* | |
130 | * Copy all data we need during this action under the protection | |
131 | * of a spinlock. Otherwise race conditions might occur which results | |
132 | * into an invalid configuration. | |
133 | */ | |
134 | spin_lock(&intf->lock); | |
135 | ||
6bb40dd1 ID |
136 | delayed_flags = intf->delayed_flags; |
137 | intf->delayed_flags = 0; | |
138 | ||
139 | spin_unlock(&intf->lock); | |
140 | ||
980dfcb9 ID |
141 | /* |
142 | * It is possible the radio was disabled while the work had been | |
143 | * scheduled. If that happens we should return here immediately, | |
144 | * note that in the spinlock protected area above the delayed_flags | |
145 | * have been cleared correctly. | |
146 | */ | |
0262ab0d | 147 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
148 | return; |
149 | ||
bd88a781 | 150 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
a2c9b652 | 151 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
6bb40dd1 | 152 | } |
5c58ee51 | 153 | |
6bb40dd1 ID |
154 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
155 | { | |
156 | struct rt2x00_dev *rt2x00dev = | |
157 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
158 | |
159 | /* | |
6bb40dd1 ID |
160 | * Iterate over each interface and perform the |
161 | * requested configurations. | |
471b3efd | 162 | */ |
6bb40dd1 ID |
163 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
164 | rt2x00lib_intf_scheduled_iter, | |
165 | rt2x00dev); | |
5c58ee51 ID |
166 | } |
167 | ||
95ea3627 ID |
168 | /* |
169 | * Interrupt context handlers. | |
170 | */ | |
6bb40dd1 ID |
171 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
172 | struct ieee80211_vif *vif) | |
95ea3627 | 173 | { |
6bb40dd1 | 174 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 175 | |
05c914fe | 176 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 177 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
178 | vif->type != NL80211_IFTYPE_MESH_POINT && |
179 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
180 | return; |
181 | ||
6bb40dd1 ID |
182 | spin_lock(&intf->lock); |
183 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
184 | spin_unlock(&intf->lock); | |
95ea3627 ID |
185 | } |
186 | ||
187 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
188 | { | |
0262ab0d | 189 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
190 | return; |
191 | ||
633257d3 ID |
192 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
193 | rt2x00lib_beacondone_iter, | |
194 | rt2x00dev); | |
6bb40dd1 | 195 | |
42935eca | 196 | ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work); |
95ea3627 ID |
197 | } |
198 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
199 | ||
181d6902 ID |
200 | void rt2x00lib_txdone(struct queue_entry *entry, |
201 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 202 | { |
181d6902 | 203 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 204 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 205 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 206 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
9f166171 | 207 | unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
92ed48e5 | 208 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 209 | u8 skbdesc_flags = skbdesc->flags; |
92ed48e5 | 210 | unsigned int i; |
2e27cff8 | 211 | bool success; |
d74f5ba4 | 212 | |
9f166171 ID |
213 | /* |
214 | * Remove L2 padding which was added during | |
215 | */ | |
216 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 217 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 218 | |
2bb057d0 ID |
219 | /* |
220 | * If the IV/EIV data was stripped from the frame before it was | |
221 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 222 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
223 | * frame as it was passed to us. |
224 | */ | |
225 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 226 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 227 | |
e039fa4a JB |
228 | /* |
229 | * Send frame to debugfs immediately, after this call is completed | |
230 | * we are going to overwrite the skb->cb array. | |
231 | */ | |
232 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
233 | |
234 | /* | |
2e27cff8 | 235 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 236 | */ |
2e27cff8 | 237 | success = |
ce4c45e0 | 238 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
2e27cff8 ID |
239 | test_bit(TXDONE_UNKNOWN, &txdesc->flags) || |
240 | test_bit(TXDONE_FALLBACK, &txdesc->flags); | |
241 | ||
242 | /* | |
243 | * Update TX statistics. | |
244 | */ | |
245 | rt2x00dev->link.qual.tx_success += success; | |
246 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 247 | |
e6a9854b JB |
248 | rate_idx = skbdesc->tx_rate_idx; |
249 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
250 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
251 | (txdesc->retry + 1) : 1; | |
e6a9854b | 252 | |
181d6902 ID |
253 | /* |
254 | * Initialize TX status | |
255 | */ | |
e039fa4a JB |
256 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
257 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
258 | |
259 | /* | |
260 | * Frame was send with retries, hardware tried | |
261 | * different rates to send out the frame, at each | |
262 | * retry it lowered the rate 1 step. | |
263 | */ | |
264 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
265 | tx_info->status.rates[i].idx = rate_idx - i; | |
266 | tx_info->status.rates[i].flags = rate_flags; | |
267 | tx_info->status.rates[i].count = 1; | |
268 | } | |
2e27cff8 | 269 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 270 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 271 | |
e039fa4a | 272 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 273 | if (success) |
e039fa4a | 274 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 275 | else |
181d6902 | 276 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
277 | } |
278 | ||
e6a9854b | 279 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 280 | if (success) |
181d6902 | 281 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 282 | else |
181d6902 | 283 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
284 | } |
285 | ||
286 | /* | |
7351c6bd JB |
287 | * Only send the status report to mac80211 when it's a frame |
288 | * that originated in mac80211. If this was a extra frame coming | |
289 | * through a mac80211 library call (RTS/CTS) then we should not | |
290 | * send the status report back. | |
95ea3627 | 291 | */ |
7351c6bd | 292 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
e039fa4a | 293 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); |
baf26a7e | 294 | else |
fb55f4d1 | 295 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
296 | |
297 | /* | |
298 | * Make this entry available for reuse. | |
299 | */ | |
95ea3627 | 300 | entry->skb = NULL; |
d74f5ba4 ID |
301 | entry->flags = 0; |
302 | ||
798b7adb | 303 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 304 | |
0262ab0d | 305 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
306 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
307 | ||
308 | /* | |
309 | * If the data queue was below the threshold before the txdone | |
310 | * handler we must make sure the packet queue in the mac80211 stack | |
311 | * is reenabled when the txdone handler has finished. | |
312 | */ | |
313 | if (!rt2x00queue_threshold(entry->queue)) | |
314 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
315 | } |
316 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
317 | ||
35f00cfc ID |
318 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
319 | struct rxdone_entry_desc *rxdesc) | |
320 | { | |
321 | struct ieee80211_supported_band *sband; | |
322 | const struct rt2x00_rate *rate; | |
323 | unsigned int i; | |
324 | int signal; | |
325 | int type; | |
326 | ||
327 | /* | |
328 | * For non-HT rates the MCS value needs to contain the | |
329 | * actually used rate modulation (CCK or OFDM). | |
330 | */ | |
331 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
332 | signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); | |
333 | else | |
334 | signal = rxdesc->signal; | |
335 | ||
336 | type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
337 | ||
338 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
339 | for (i = 0; i < sband->n_bitrates; i++) { | |
340 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
341 | ||
342 | if (((type == RXDONE_SIGNAL_PLCP) && | |
343 | (rate->plcp == signal)) || | |
344 | ((type == RXDONE_SIGNAL_BITRATE) && | |
345 | (rate->bitrate == signal)) || | |
346 | ((type == RXDONE_SIGNAL_MCS) && | |
347 | (rate->mcs == signal))) { | |
348 | return i; | |
349 | } | |
350 | } | |
351 | ||
352 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
353 | "signal=0x%.4x, type=%d.\n", signal, type); | |
354 | return 0; | |
355 | } | |
356 | ||
c4da0048 GW |
357 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
358 | struct queue_entry *entry) | |
95ea3627 | 359 | { |
c4da0048 GW |
360 | struct rxdone_entry_desc rxdesc; |
361 | struct sk_buff *skb; | |
95ea3627 | 362 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
2bb057d0 | 363 | unsigned int header_length; |
35f00cfc | 364 | int rate_idx; |
c4da0048 GW |
365 | /* |
366 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
367 | * received frame and reuse the existing buffer. | |
368 | */ | |
369 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
370 | if (!skb) | |
371 | return; | |
372 | ||
373 | /* | |
374 | * Unmap the skb. | |
375 | */ | |
376 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
377 | ||
378 | /* | |
379 | * Extract the RXD details. | |
380 | */ | |
381 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
382 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 383 | |
239c249d GW |
384 | /* |
385 | * The data behind the ieee80211 header must be | |
a9f853dd | 386 | * aligned on a 4 byte boundary. |
239c249d | 387 | */ |
2bb057d0 | 388 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 389 | |
2bb057d0 ID |
390 | /* |
391 | * Hardware might have stripped the IV/EIV/ICV data, | |
392 | * in that case it is possible that the data was | |
3ad2f3fb | 393 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
394 | * in which case we should reinsert the data into the frame. |
395 | */ | |
74415edb | 396 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 397 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 398 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 399 | &rxdesc); |
b7340833 GW |
400 | else if (header_length && |
401 | (rxdesc.size > header_length) && | |
402 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 403 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 404 | else |
daee6c09 | 405 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 406 | |
1398d458 AB |
407 | /* Trim buffer to correct size */ |
408 | skb_trim(entry->skb, rxdesc.size); | |
409 | ||
95ea3627 | 410 | /* |
35f00cfc ID |
411 | * Check if the frame was received using HT. In that case, |
412 | * the rate is the MCS index and should be passed to mac80211 | |
413 | * directly. Otherwise we need to translate the signal to | |
414 | * the correct bitrate index. | |
95ea3627 | 415 | */ |
35f00cfc ID |
416 | if (rxdesc.rate_mode == RATE_MODE_CCK || |
417 | rxdesc.rate_mode == RATE_MODE_OFDM) { | |
418 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); | |
419 | } else { | |
420 | rxdesc.flags |= RX_FLAG_HT; | |
421 | rate_idx = rxdesc.signal; | |
866a0503 ID |
422 | } |
423 | ||
61af43c5 | 424 | /* |
84e3196f | 425 | * Update extra components |
61af43c5 | 426 | */ |
84e3196f ID |
427 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
428 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
69f81a2c | 429 | |
ae73e58e | 430 | rx_status->mactime = rxdesc.timestamp; |
35f00cfc | 431 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
432 | rx_status->signal = rxdesc.rssi; |
433 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 434 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
435 | |
436 | /* | |
181d6902 ID |
437 | * Send frame to mac80211 & debugfs. |
438 | * mac80211 will clean up the skb structure. | |
95ea3627 | 439 | */ |
5a6e5999 | 440 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
f1d58c25 JB |
441 | memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status)); |
442 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb); | |
c4da0048 GW |
443 | |
444 | /* | |
445 | * Replace the skb with the freshly allocated one. | |
446 | */ | |
447 | entry->skb = skb; | |
d74f5ba4 ID |
448 | entry->flags = 0; |
449 | ||
798b7adb | 450 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
451 | |
452 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
453 | } |
454 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
455 | ||
95ea3627 ID |
456 | /* |
457 | * Driver initialization handlers. | |
458 | */ | |
70e2fed4 ID |
459 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
460 | { | |
3d8606a6 | 461 | .flags = DEV_RATE_CCK, |
70e2fed4 | 462 | .bitrate = 10, |
aa776721 | 463 | .ratemask = BIT(0), |
70e2fed4 | 464 | .plcp = 0x00, |
35f00cfc | 465 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
466 | }, |
467 | { | |
3d8606a6 | 468 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 469 | .bitrate = 20, |
aa776721 | 470 | .ratemask = BIT(1), |
70e2fed4 | 471 | .plcp = 0x01, |
35f00cfc | 472 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
473 | }, |
474 | { | |
3d8606a6 | 475 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 476 | .bitrate = 55, |
aa776721 | 477 | .ratemask = BIT(2), |
70e2fed4 | 478 | .plcp = 0x02, |
35f00cfc | 479 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
480 | }, |
481 | { | |
3d8606a6 | 482 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 483 | .bitrate = 110, |
aa776721 | 484 | .ratemask = BIT(3), |
70e2fed4 | 485 | .plcp = 0x03, |
35f00cfc | 486 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
487 | }, |
488 | { | |
3d8606a6 | 489 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 490 | .bitrate = 60, |
aa776721 | 491 | .ratemask = BIT(4), |
70e2fed4 | 492 | .plcp = 0x0b, |
35f00cfc | 493 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
494 | }, |
495 | { | |
496 | .flags = DEV_RATE_OFDM, | |
497 | .bitrate = 90, | |
aa776721 | 498 | .ratemask = BIT(5), |
70e2fed4 | 499 | .plcp = 0x0f, |
35f00cfc | 500 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
501 | }, |
502 | { | |
3d8606a6 | 503 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 504 | .bitrate = 120, |
aa776721 | 505 | .ratemask = BIT(6), |
70e2fed4 | 506 | .plcp = 0x0a, |
35f00cfc | 507 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
508 | }, |
509 | { | |
510 | .flags = DEV_RATE_OFDM, | |
511 | .bitrate = 180, | |
aa776721 | 512 | .ratemask = BIT(7), |
70e2fed4 | 513 | .plcp = 0x0e, |
35f00cfc | 514 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
515 | }, |
516 | { | |
3d8606a6 | 517 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 518 | .bitrate = 240, |
aa776721 | 519 | .ratemask = BIT(8), |
70e2fed4 | 520 | .plcp = 0x09, |
35f00cfc | 521 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
522 | }, |
523 | { | |
524 | .flags = DEV_RATE_OFDM, | |
525 | .bitrate = 360, | |
aa776721 | 526 | .ratemask = BIT(9), |
70e2fed4 | 527 | .plcp = 0x0d, |
35f00cfc | 528 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
529 | }, |
530 | { | |
531 | .flags = DEV_RATE_OFDM, | |
532 | .bitrate = 480, | |
aa776721 | 533 | .ratemask = BIT(10), |
70e2fed4 | 534 | .plcp = 0x08, |
35f00cfc | 535 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
536 | }, |
537 | { | |
538 | .flags = DEV_RATE_OFDM, | |
539 | .bitrate = 540, | |
aa776721 | 540 | .ratemask = BIT(11), |
70e2fed4 | 541 | .plcp = 0x0c, |
35f00cfc | 542 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
543 | }, |
544 | }; | |
545 | ||
95ea3627 ID |
546 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
547 | const int channel, const int tx_power, | |
548 | const int value) | |
549 | { | |
f2a3c7f5 | 550 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
551 | entry->hw_value = value; |
552 | entry->max_power = tx_power; | |
553 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
554 | } |
555 | ||
556 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 557 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 558 | { |
70e2fed4 ID |
559 | entry->flags = 0; |
560 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
561 | entry->hw_value =index; |
562 | entry->hw_value_short = index; | |
70e2fed4 | 563 | |
3ea96463 | 564 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 565 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
566 | } |
567 | ||
568 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
569 | struct hw_mode_spec *spec) | |
570 | { | |
571 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
572 | struct ieee80211_channel *channels; |
573 | struct ieee80211_rate *rates; | |
31562e80 | 574 | unsigned int num_rates; |
95ea3627 | 575 | unsigned int i; |
95ea3627 | 576 | |
31562e80 ID |
577 | num_rates = 0; |
578 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
579 | num_rates += 4; | |
580 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
581 | num_rates += 8; | |
95ea3627 ID |
582 | |
583 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
584 | if (!channels) | |
8318d78a | 585 | return -ENOMEM; |
95ea3627 | 586 | |
31562e80 | 587 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
588 | if (!rates) |
589 | goto exit_free_channels; | |
590 | ||
591 | /* | |
592 | * Initialize Rate list. | |
593 | */ | |
31562e80 | 594 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 595 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
596 | |
597 | /* | |
598 | * Initialize Channel list. | |
599 | */ | |
600 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 601 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
602 | spec->channels[i].channel, |
603 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
604 | } |
605 | ||
606 | /* | |
31562e80 | 607 | * Intitialize 802.11b, 802.11g |
95ea3627 | 608 | * Rates: CCK, OFDM. |
8318d78a | 609 | * Channels: 2.4 GHz |
95ea3627 | 610 | */ |
47ac2683 | 611 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
612 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
613 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
614 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
615 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
616 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
617 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
618 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
619 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
620 | } |
621 | ||
622 | /* | |
623 | * Intitialize 802.11a | |
624 | * Rates: OFDM. | |
625 | * Channels: OFDM, UNII, HiperLAN2. | |
626 | */ | |
47ac2683 | 627 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
628 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
629 | spec->num_channels - 14; | |
630 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
631 | num_rates - 4; | |
632 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
633 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
634 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
635 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
636 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
637 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
638 | } |
639 | ||
95ea3627 ID |
640 | return 0; |
641 | ||
8318d78a | 642 | exit_free_channels: |
95ea3627 | 643 | kfree(channels); |
95ea3627 ID |
644 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
645 | return -ENOMEM; | |
646 | } | |
647 | ||
648 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
649 | { | |
0262ab0d | 650 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
651 | ieee80211_unregister_hw(rt2x00dev->hw); |
652 | ||
8318d78a JB |
653 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
654 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
655 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
656 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
657 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 658 | } |
8c5e7a5f ID |
659 | |
660 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
661 | } |
662 | ||
663 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
664 | { | |
665 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
666 | int status; | |
667 | ||
0262ab0d ID |
668 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
669 | return 0; | |
670 | ||
95ea3627 ID |
671 | /* |
672 | * Initialize HW modes. | |
673 | */ | |
674 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
675 | if (status) | |
676 | return status; | |
677 | ||
61448f88 GW |
678 | /* |
679 | * Initialize HW fields. | |
680 | */ | |
681 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
682 | ||
e6218cc4 GW |
683 | /* |
684 | * Initialize extra TX headroom required. | |
685 | */ | |
7a4a77b7 GW |
686 | rt2x00dev->hw->extra_tx_headroom = |
687 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
688 | rt2x00dev->ops->extra_tx_headroom); | |
689 | ||
690 | /* | |
691 | * Take TX headroom required for alignment into account. | |
692 | */ | |
693 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
694 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
695 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
696 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 697 | |
95ea3627 ID |
698 | /* |
699 | * Register HW. | |
700 | */ | |
701 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 702 | if (status) |
95ea3627 | 703 | return status; |
95ea3627 | 704 | |
0262ab0d | 705 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
706 | |
707 | return 0; | |
708 | } | |
709 | ||
710 | /* | |
711 | * Initialization/uninitialization handlers. | |
712 | */ | |
e37ea213 | 713 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 714 | { |
0262ab0d | 715 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
716 | return; |
717 | ||
718 | /* | |
1682fe6d | 719 | * Unregister extra components. |
95ea3627 ID |
720 | */ |
721 | rt2x00rfkill_unregister(rt2x00dev); | |
722 | ||
723 | /* | |
724 | * Allow the HW to uninitialize. | |
725 | */ | |
726 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
727 | ||
728 | /* | |
181d6902 | 729 | * Free allocated queue entries. |
95ea3627 | 730 | */ |
181d6902 | 731 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
732 | } |
733 | ||
e37ea213 | 734 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
735 | { |
736 | int status; | |
737 | ||
0262ab0d | 738 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
739 | return 0; |
740 | ||
741 | /* | |
181d6902 | 742 | * Allocate all queue entries. |
95ea3627 | 743 | */ |
181d6902 ID |
744 | status = rt2x00queue_initialize(rt2x00dev); |
745 | if (status) | |
95ea3627 | 746 | return status; |
95ea3627 ID |
747 | |
748 | /* | |
749 | * Initialize the device. | |
750 | */ | |
751 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
752 | if (status) { |
753 | rt2x00queue_uninitialize(rt2x00dev); | |
754 | return status; | |
755 | } | |
95ea3627 | 756 | |
0262ab0d | 757 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
758 | |
759 | /* | |
1682fe6d | 760 | * Register the extra components. |
95ea3627 | 761 | */ |
1682fe6d | 762 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
763 | |
764 | return 0; | |
95ea3627 ID |
765 | } |
766 | ||
e37ea213 ID |
767 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
768 | { | |
769 | int retval; | |
770 | ||
0262ab0d | 771 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
772 | return 0; |
773 | ||
774 | /* | |
775 | * If this is the first interface which is added, | |
776 | * we should load the firmware now. | |
777 | */ | |
9404ef34 ID |
778 | retval = rt2x00lib_load_firmware(rt2x00dev); |
779 | if (retval) | |
780 | return retval; | |
e37ea213 ID |
781 | |
782 | /* | |
783 | * Initialize the device. | |
784 | */ | |
785 | retval = rt2x00lib_initialize(rt2x00dev); | |
786 | if (retval) | |
787 | return retval; | |
788 | ||
6bb40dd1 ID |
789 | rt2x00dev->intf_ap_count = 0; |
790 | rt2x00dev->intf_sta_count = 0; | |
791 | rt2x00dev->intf_associated = 0; | |
792 | ||
bdfa500b ID |
793 | /* Enable the radio */ |
794 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
795 | if (retval) { | |
796 | rt2x00queue_uninitialize(rt2x00dev); | |
797 | return retval; | |
798 | } | |
799 | ||
0262ab0d | 800 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
801 | |
802 | return 0; | |
803 | } | |
804 | ||
805 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
806 | { | |
0262ab0d | 807 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
808 | return; |
809 | ||
810 | /* | |
811 | * Perhaps we can add something smarter here, | |
812 | * but for now just disabling the radio should do. | |
813 | */ | |
814 | rt2x00lib_disable_radio(rt2x00dev); | |
815 | ||
6bb40dd1 ID |
816 | rt2x00dev->intf_ap_count = 0; |
817 | rt2x00dev->intf_sta_count = 0; | |
818 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
819 | } |
820 | ||
95ea3627 ID |
821 | /* |
822 | * driver allocation handlers. | |
823 | */ | |
95ea3627 ID |
824 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
825 | { | |
826 | int retval = -ENOMEM; | |
827 | ||
8ff48a8b ID |
828 | mutex_init(&rt2x00dev->csr_mutex); |
829 | ||
66f84d65 SC |
830 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
831 | ||
6bb40dd1 ID |
832 | /* |
833 | * Make room for rt2x00_intf inside the per-interface | |
834 | * structure ieee80211_vif. | |
835 | */ | |
836 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
837 | ||
3514a441 ID |
838 | /* |
839 | * Determine which operating modes are supported, all modes | |
840 | * which require beaconing, depend on the availability of | |
841 | * beacon entries. | |
842 | */ | |
843 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
844 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
845 | rt2x00dev->hw->wiphy->interface_modes |= | |
846 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 847 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
848 | BIT(NL80211_IFTYPE_MESH_POINT) | |
849 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 850 | |
95ea3627 ID |
851 | /* |
852 | * Let the driver probe the device to detect the capabilities. | |
853 | */ | |
854 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
855 | if (retval) { | |
856 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
857 | goto exit; | |
858 | } | |
859 | ||
860 | /* | |
861 | * Initialize configuration work. | |
862 | */ | |
6bb40dd1 | 863 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
95ea3627 | 864 | |
95ea3627 | 865 | /* |
181d6902 | 866 | * Allocate queue array. |
95ea3627 | 867 | */ |
181d6902 | 868 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
869 | if (retval) |
870 | goto exit; | |
871 | ||
872 | /* | |
873 | * Initialize ieee80211 structure. | |
874 | */ | |
875 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
876 | if (retval) { | |
877 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
878 | goto exit; | |
879 | } | |
880 | ||
a9450b70 | 881 | /* |
1682fe6d | 882 | * Register extra components. |
a9450b70 | 883 | */ |
84e3196f | 884 | rt2x00link_register(rt2x00dev); |
a9450b70 | 885 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
886 | rt2x00debug_register(rt2x00dev); |
887 | ||
888 | return 0; | |
889 | ||
890 | exit: | |
891 | rt2x00lib_remove_dev(rt2x00dev); | |
892 | ||
893 | return retval; | |
894 | } | |
895 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
896 | ||
897 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
898 | { | |
0262ab0d | 899 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 900 | |
95ea3627 ID |
901 | /* |
902 | * Disable radio. | |
903 | */ | |
904 | rt2x00lib_disable_radio(rt2x00dev); | |
905 | ||
d8cc8926 PR |
906 | /* |
907 | * Stop all work. | |
908 | */ | |
d8cc8926 PR |
909 | cancel_work_sync(&rt2x00dev->intf_work); |
910 | ||
95ea3627 ID |
911 | /* |
912 | * Uninitialize device. | |
913 | */ | |
914 | rt2x00lib_uninitialize(rt2x00dev); | |
915 | ||
916 | /* | |
1682fe6d | 917 | * Free extra components |
95ea3627 ID |
918 | */ |
919 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
920 | rt2x00leds_unregister(rt2x00dev); |
921 | ||
95ea3627 ID |
922 | /* |
923 | * Free ieee80211_hw memory. | |
924 | */ | |
925 | rt2x00lib_remove_hw(rt2x00dev); | |
926 | ||
927 | /* | |
928 | * Free firmware image. | |
929 | */ | |
930 | rt2x00lib_free_firmware(rt2x00dev); | |
931 | ||
932 | /* | |
181d6902 | 933 | * Free queue structures. |
95ea3627 | 934 | */ |
181d6902 | 935 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
936 | } |
937 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
938 | ||
939 | /* | |
940 | * Device state handlers | |
941 | */ | |
942 | #ifdef CONFIG_PM | |
943 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
944 | { | |
95ea3627 | 945 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
946 | |
947 | /* | |
07126127 | 948 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 949 | */ |
07126127 ID |
950 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
951 | return 0; | |
95ea3627 ID |
952 | |
953 | /* | |
07126127 | 954 | * Cleanup as much as possible. |
95ea3627 | 955 | */ |
95ea3627 | 956 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
957 | |
958 | /* | |
959 | * Suspend/disable extra components. | |
960 | */ | |
a9450b70 | 961 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
962 | rt2x00debug_deregister(rt2x00dev); |
963 | ||
964 | /* | |
9896322a ID |
965 | * Set device mode to sleep for power management, |
966 | * on some hardware this call seems to consistently fail. | |
967 | * From the specifications it is hard to tell why it fails, | |
968 | * and if this is a "bad thing". | |
969 | * Overall it is safe to just ignore the failure and | |
970 | * continue suspending. The only downside is that the | |
971 | * device will not be in optimal power save mode, but with | |
972 | * the radio and the other components already disabled the | |
973 | * device is as good as disabled. | |
95ea3627 | 974 | */ |
07126127 | 975 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
976 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
977 | "continue suspending.\n"); | |
95ea3627 ID |
978 | |
979 | return 0; | |
980 | } | |
981 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
982 | ||
983 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
984 | { | |
95ea3627 | 985 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
986 | |
987 | /* | |
1682fe6d | 988 | * Restore/enable extra components. |
95ea3627 ID |
989 | */ |
990 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 991 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 992 | |
e37ea213 ID |
993 | /* |
994 | * We are ready again to receive requests from mac80211. | |
995 | */ | |
0262ab0d | 996 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 997 | |
95ea3627 | 998 | return 0; |
95ea3627 ID |
999 | } |
1000 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1001 | #endif /* CONFIG_PM */ | |
1002 | ||
1003 | /* | |
1004 | * rt2x00lib module information. | |
1005 | */ | |
1006 | MODULE_AUTHOR(DRV_PROJECT); | |
1007 | MODULE_VERSION(DRV_VERSION); | |
1008 | MODULE_DESCRIPTION("rt2x00 library"); | |
1009 | MODULE_LICENSE("GPL"); |