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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 ID |
212 | |
213 | /* | |
214 | * Unmap the skb. | |
215 | */ | |
216 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a | 217 | |
9f166171 ID |
218 | /* |
219 | * Remove L2 padding which was added during | |
220 | */ | |
221 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 222 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 223 | |
2bb057d0 ID |
224 | /* |
225 | * If the IV/EIV data was stripped from the frame before it was | |
226 | * passed to the hardware, we should now reinsert it again because | |
227 | * mac80211 will expect the the same data to be present it the | |
228 | * frame as it was passed to us. | |
229 | */ | |
230 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 231 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 232 | |
e039fa4a JB |
233 | /* |
234 | * Send frame to debugfs immediately, after this call is completed | |
235 | * we are going to overwrite the skb->cb array. | |
236 | */ | |
237 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
238 | |
239 | /* | |
2e27cff8 | 240 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 241 | */ |
2e27cff8 | 242 | success = |
ce4c45e0 | 243 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
2e27cff8 ID |
244 | test_bit(TXDONE_UNKNOWN, &txdesc->flags) || |
245 | test_bit(TXDONE_FALLBACK, &txdesc->flags); | |
246 | ||
247 | /* | |
248 | * Update TX statistics. | |
249 | */ | |
250 | rt2x00dev->link.qual.tx_success += success; | |
251 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 252 | |
e6a9854b JB |
253 | rate_idx = skbdesc->tx_rate_idx; |
254 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
255 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
256 | (txdesc->retry + 1) : 1; | |
e6a9854b | 257 | |
181d6902 ID |
258 | /* |
259 | * Initialize TX status | |
260 | */ | |
e039fa4a JB |
261 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
262 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
263 | |
264 | /* | |
265 | * Frame was send with retries, hardware tried | |
266 | * different rates to send out the frame, at each | |
267 | * retry it lowered the rate 1 step. | |
268 | */ | |
269 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
270 | tx_info->status.rates[i].idx = rate_idx - i; | |
271 | tx_info->status.rates[i].flags = rate_flags; | |
272 | tx_info->status.rates[i].count = 1; | |
273 | } | |
2e27cff8 | 274 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 275 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 276 | |
e039fa4a | 277 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 278 | if (success) |
e039fa4a | 279 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 280 | else |
181d6902 | 281 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
282 | } |
283 | ||
e6a9854b | 284 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 285 | if (success) |
181d6902 | 286 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 287 | else |
181d6902 | 288 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
289 | } |
290 | ||
291 | /* | |
7351c6bd JB |
292 | * Only send the status report to mac80211 when it's a frame |
293 | * that originated in mac80211. If this was a extra frame coming | |
294 | * through a mac80211 library call (RTS/CTS) then we should not | |
295 | * send the status report back. | |
95ea3627 | 296 | */ |
7351c6bd | 297 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
e039fa4a | 298 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); |
baf26a7e | 299 | else |
fb55f4d1 | 300 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
301 | |
302 | /* | |
303 | * Make this entry available for reuse. | |
304 | */ | |
95ea3627 | 305 | entry->skb = NULL; |
d74f5ba4 ID |
306 | entry->flags = 0; |
307 | ||
798b7adb | 308 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 309 | |
0262ab0d | 310 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
311 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
312 | ||
313 | /* | |
314 | * If the data queue was below the threshold before the txdone | |
315 | * handler we must make sure the packet queue in the mac80211 stack | |
316 | * is reenabled when the txdone handler has finished. | |
317 | */ | |
318 | if (!rt2x00queue_threshold(entry->queue)) | |
319 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
320 | } |
321 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
322 | ||
35f00cfc ID |
323 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
324 | struct rxdone_entry_desc *rxdesc) | |
325 | { | |
326 | struct ieee80211_supported_band *sband; | |
327 | const struct rt2x00_rate *rate; | |
328 | unsigned int i; | |
329 | int signal; | |
330 | int type; | |
331 | ||
332 | /* | |
333 | * For non-HT rates the MCS value needs to contain the | |
334 | * actually used rate modulation (CCK or OFDM). | |
335 | */ | |
336 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
337 | signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); | |
338 | else | |
339 | signal = rxdesc->signal; | |
340 | ||
341 | type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
342 | ||
343 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
344 | for (i = 0; i < sband->n_bitrates; i++) { | |
345 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
346 | ||
347 | if (((type == RXDONE_SIGNAL_PLCP) && | |
348 | (rate->plcp == signal)) || | |
349 | ((type == RXDONE_SIGNAL_BITRATE) && | |
350 | (rate->bitrate == signal)) || | |
351 | ((type == RXDONE_SIGNAL_MCS) && | |
352 | (rate->mcs == signal))) { | |
353 | return i; | |
354 | } | |
355 | } | |
356 | ||
357 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
358 | "signal=0x%.4x, type=%d.\n", signal, type); | |
359 | return 0; | |
360 | } | |
361 | ||
c4da0048 GW |
362 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
363 | struct queue_entry *entry) | |
95ea3627 | 364 | { |
c4da0048 GW |
365 | struct rxdone_entry_desc rxdesc; |
366 | struct sk_buff *skb; | |
95ea3627 | 367 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
2bb057d0 | 368 | unsigned int header_length; |
35f00cfc | 369 | int rate_idx; |
c4da0048 GW |
370 | /* |
371 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
372 | * received frame and reuse the existing buffer. | |
373 | */ | |
374 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
375 | if (!skb) | |
376 | return; | |
377 | ||
378 | /* | |
379 | * Unmap the skb. | |
380 | */ | |
381 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
382 | ||
383 | /* | |
384 | * Extract the RXD details. | |
385 | */ | |
386 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
387 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 388 | |
239c249d GW |
389 | /* |
390 | * The data behind the ieee80211 header must be | |
a9f853dd | 391 | * aligned on a 4 byte boundary. |
239c249d | 392 | */ |
2bb057d0 | 393 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 394 | |
2bb057d0 ID |
395 | /* |
396 | * Hardware might have stripped the IV/EIV/ICV data, | |
397 | * in that case it is possible that the data was | |
3ad2f3fb | 398 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
399 | * in which case we should reinsert the data into the frame. |
400 | */ | |
74415edb | 401 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 402 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 403 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 404 | &rxdesc); |
b7340833 GW |
405 | else if (header_length && |
406 | (rxdesc.size > header_length) && | |
407 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 408 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 409 | else |
daee6c09 | 410 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 411 | |
1398d458 AB |
412 | /* Trim buffer to correct size */ |
413 | skb_trim(entry->skb, rxdesc.size); | |
414 | ||
95ea3627 | 415 | /* |
35f00cfc ID |
416 | * Check if the frame was received using HT. In that case, |
417 | * the rate is the MCS index and should be passed to mac80211 | |
418 | * directly. Otherwise we need to translate the signal to | |
419 | * the correct bitrate index. | |
95ea3627 | 420 | */ |
35f00cfc ID |
421 | if (rxdesc.rate_mode == RATE_MODE_CCK || |
422 | rxdesc.rate_mode == RATE_MODE_OFDM) { | |
423 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); | |
424 | } else { | |
425 | rxdesc.flags |= RX_FLAG_HT; | |
426 | rate_idx = rxdesc.signal; | |
866a0503 ID |
427 | } |
428 | ||
61af43c5 | 429 | /* |
84e3196f | 430 | * Update extra components |
61af43c5 | 431 | */ |
84e3196f ID |
432 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
433 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
69f81a2c | 434 | |
ae73e58e | 435 | rx_status->mactime = rxdesc.timestamp; |
35f00cfc | 436 | rx_status->rate_idx = rate_idx; |
c4da0048 | 437 | rx_status->signal = rxdesc.rssi; |
2bdb35c7 | 438 | rx_status->noise = rxdesc.noise; |
c4da0048 | 439 | rx_status->flag = rxdesc.flags; |
69f81a2c | 440 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
441 | |
442 | /* | |
181d6902 ID |
443 | * Send frame to mac80211 & debugfs. |
444 | * mac80211 will clean up the skb structure. | |
95ea3627 | 445 | */ |
5a6e5999 | 446 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
f1d58c25 JB |
447 | memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status)); |
448 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb); | |
c4da0048 GW |
449 | |
450 | /* | |
451 | * Replace the skb with the freshly allocated one. | |
452 | */ | |
453 | entry->skb = skb; | |
d74f5ba4 ID |
454 | entry->flags = 0; |
455 | ||
798b7adb | 456 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
457 | |
458 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
459 | } |
460 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
461 | ||
95ea3627 ID |
462 | /* |
463 | * Driver initialization handlers. | |
464 | */ | |
70e2fed4 ID |
465 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
466 | { | |
3d8606a6 | 467 | .flags = DEV_RATE_CCK, |
70e2fed4 | 468 | .bitrate = 10, |
aa776721 | 469 | .ratemask = BIT(0), |
70e2fed4 | 470 | .plcp = 0x00, |
35f00cfc | 471 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
472 | }, |
473 | { | |
3d8606a6 | 474 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 475 | .bitrate = 20, |
aa776721 | 476 | .ratemask = BIT(1), |
70e2fed4 | 477 | .plcp = 0x01, |
35f00cfc | 478 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
479 | }, |
480 | { | |
3d8606a6 | 481 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 482 | .bitrate = 55, |
aa776721 | 483 | .ratemask = BIT(2), |
70e2fed4 | 484 | .plcp = 0x02, |
35f00cfc | 485 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
486 | }, |
487 | { | |
3d8606a6 | 488 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 489 | .bitrate = 110, |
aa776721 | 490 | .ratemask = BIT(3), |
70e2fed4 | 491 | .plcp = 0x03, |
35f00cfc | 492 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
493 | }, |
494 | { | |
3d8606a6 | 495 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 496 | .bitrate = 60, |
aa776721 | 497 | .ratemask = BIT(4), |
70e2fed4 | 498 | .plcp = 0x0b, |
35f00cfc | 499 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
500 | }, |
501 | { | |
502 | .flags = DEV_RATE_OFDM, | |
503 | .bitrate = 90, | |
aa776721 | 504 | .ratemask = BIT(5), |
70e2fed4 | 505 | .plcp = 0x0f, |
35f00cfc | 506 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
507 | }, |
508 | { | |
3d8606a6 | 509 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 510 | .bitrate = 120, |
aa776721 | 511 | .ratemask = BIT(6), |
70e2fed4 | 512 | .plcp = 0x0a, |
35f00cfc | 513 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
514 | }, |
515 | { | |
516 | .flags = DEV_RATE_OFDM, | |
517 | .bitrate = 180, | |
aa776721 | 518 | .ratemask = BIT(7), |
70e2fed4 | 519 | .plcp = 0x0e, |
35f00cfc | 520 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
521 | }, |
522 | { | |
3d8606a6 | 523 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 524 | .bitrate = 240, |
aa776721 | 525 | .ratemask = BIT(8), |
70e2fed4 | 526 | .plcp = 0x09, |
35f00cfc | 527 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
528 | }, |
529 | { | |
530 | .flags = DEV_RATE_OFDM, | |
531 | .bitrate = 360, | |
aa776721 | 532 | .ratemask = BIT(9), |
70e2fed4 | 533 | .plcp = 0x0d, |
35f00cfc | 534 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
535 | }, |
536 | { | |
537 | .flags = DEV_RATE_OFDM, | |
538 | .bitrate = 480, | |
aa776721 | 539 | .ratemask = BIT(10), |
70e2fed4 | 540 | .plcp = 0x08, |
35f00cfc | 541 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
542 | }, |
543 | { | |
544 | .flags = DEV_RATE_OFDM, | |
545 | .bitrate = 540, | |
aa776721 | 546 | .ratemask = BIT(11), |
70e2fed4 | 547 | .plcp = 0x0c, |
35f00cfc | 548 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
549 | }, |
550 | }; | |
551 | ||
95ea3627 ID |
552 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
553 | const int channel, const int tx_power, | |
554 | const int value) | |
555 | { | |
f2a3c7f5 | 556 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
557 | entry->hw_value = value; |
558 | entry->max_power = tx_power; | |
559 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
560 | } |
561 | ||
562 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 563 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 564 | { |
70e2fed4 ID |
565 | entry->flags = 0; |
566 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
567 | entry->hw_value =index; |
568 | entry->hw_value_short = index; | |
70e2fed4 | 569 | |
3ea96463 | 570 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 571 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
572 | } |
573 | ||
574 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
575 | struct hw_mode_spec *spec) | |
576 | { | |
577 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
578 | struct ieee80211_channel *channels; |
579 | struct ieee80211_rate *rates; | |
31562e80 | 580 | unsigned int num_rates; |
95ea3627 | 581 | unsigned int i; |
95ea3627 | 582 | |
31562e80 ID |
583 | num_rates = 0; |
584 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
585 | num_rates += 4; | |
586 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
587 | num_rates += 8; | |
95ea3627 ID |
588 | |
589 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
590 | if (!channels) | |
8318d78a | 591 | return -ENOMEM; |
95ea3627 | 592 | |
31562e80 | 593 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
594 | if (!rates) |
595 | goto exit_free_channels; | |
596 | ||
597 | /* | |
598 | * Initialize Rate list. | |
599 | */ | |
31562e80 | 600 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 601 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
602 | |
603 | /* | |
604 | * Initialize Channel list. | |
605 | */ | |
606 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 607 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
608 | spec->channels[i].channel, |
609 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
610 | } |
611 | ||
612 | /* | |
31562e80 | 613 | * Intitialize 802.11b, 802.11g |
95ea3627 | 614 | * Rates: CCK, OFDM. |
8318d78a | 615 | * Channels: 2.4 GHz |
95ea3627 | 616 | */ |
47ac2683 | 617 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
618 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
619 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
620 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
621 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
622 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
623 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
624 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
625 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
626 | } |
627 | ||
628 | /* | |
629 | * Intitialize 802.11a | |
630 | * Rates: OFDM. | |
631 | * Channels: OFDM, UNII, HiperLAN2. | |
632 | */ | |
47ac2683 | 633 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
634 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
635 | spec->num_channels - 14; | |
636 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
637 | num_rates - 4; | |
638 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
639 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
640 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
641 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
642 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
643 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
644 | } |
645 | ||
95ea3627 ID |
646 | return 0; |
647 | ||
8318d78a | 648 | exit_free_channels: |
95ea3627 | 649 | kfree(channels); |
95ea3627 ID |
650 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
651 | return -ENOMEM; | |
652 | } | |
653 | ||
654 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
655 | { | |
0262ab0d | 656 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
657 | ieee80211_unregister_hw(rt2x00dev->hw); |
658 | ||
8318d78a JB |
659 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
660 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
661 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
662 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
663 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 664 | } |
8c5e7a5f ID |
665 | |
666 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
667 | } |
668 | ||
669 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
670 | { | |
671 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
672 | int status; | |
673 | ||
0262ab0d ID |
674 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
675 | return 0; | |
676 | ||
95ea3627 ID |
677 | /* |
678 | * Initialize HW modes. | |
679 | */ | |
680 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
681 | if (status) | |
682 | return status; | |
683 | ||
61448f88 GW |
684 | /* |
685 | * Initialize HW fields. | |
686 | */ | |
687 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
688 | ||
e6218cc4 GW |
689 | /* |
690 | * Initialize extra TX headroom required. | |
691 | */ | |
7a4a77b7 GW |
692 | rt2x00dev->hw->extra_tx_headroom = |
693 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
694 | rt2x00dev->ops->extra_tx_headroom); | |
695 | ||
696 | /* | |
697 | * Take TX headroom required for alignment into account. | |
698 | */ | |
699 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
700 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
701 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
702 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 703 | |
95ea3627 ID |
704 | /* |
705 | * Register HW. | |
706 | */ | |
707 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 708 | if (status) |
95ea3627 | 709 | return status; |
95ea3627 | 710 | |
0262ab0d | 711 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
712 | |
713 | return 0; | |
714 | } | |
715 | ||
716 | /* | |
717 | * Initialization/uninitialization handlers. | |
718 | */ | |
e37ea213 | 719 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 720 | { |
0262ab0d | 721 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
722 | return; |
723 | ||
724 | /* | |
1682fe6d | 725 | * Unregister extra components. |
95ea3627 ID |
726 | */ |
727 | rt2x00rfkill_unregister(rt2x00dev); | |
728 | ||
729 | /* | |
730 | * Allow the HW to uninitialize. | |
731 | */ | |
732 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
733 | ||
734 | /* | |
181d6902 | 735 | * Free allocated queue entries. |
95ea3627 | 736 | */ |
181d6902 | 737 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
738 | } |
739 | ||
e37ea213 | 740 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
741 | { |
742 | int status; | |
743 | ||
0262ab0d | 744 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
745 | return 0; |
746 | ||
747 | /* | |
181d6902 | 748 | * Allocate all queue entries. |
95ea3627 | 749 | */ |
181d6902 ID |
750 | status = rt2x00queue_initialize(rt2x00dev); |
751 | if (status) | |
95ea3627 | 752 | return status; |
95ea3627 ID |
753 | |
754 | /* | |
755 | * Initialize the device. | |
756 | */ | |
757 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
758 | if (status) { |
759 | rt2x00queue_uninitialize(rt2x00dev); | |
760 | return status; | |
761 | } | |
95ea3627 | 762 | |
0262ab0d | 763 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
764 | |
765 | /* | |
1682fe6d | 766 | * Register the extra components. |
95ea3627 | 767 | */ |
1682fe6d | 768 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
769 | |
770 | return 0; | |
95ea3627 ID |
771 | } |
772 | ||
e37ea213 ID |
773 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
774 | { | |
775 | int retval; | |
776 | ||
0262ab0d | 777 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
778 | return 0; |
779 | ||
780 | /* | |
781 | * If this is the first interface which is added, | |
782 | * we should load the firmware now. | |
783 | */ | |
9404ef34 ID |
784 | retval = rt2x00lib_load_firmware(rt2x00dev); |
785 | if (retval) | |
786 | return retval; | |
e37ea213 ID |
787 | |
788 | /* | |
789 | * Initialize the device. | |
790 | */ | |
791 | retval = rt2x00lib_initialize(rt2x00dev); | |
792 | if (retval) | |
793 | return retval; | |
794 | ||
6bb40dd1 ID |
795 | rt2x00dev->intf_ap_count = 0; |
796 | rt2x00dev->intf_sta_count = 0; | |
797 | rt2x00dev->intf_associated = 0; | |
798 | ||
bdfa500b ID |
799 | /* Enable the radio */ |
800 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
801 | if (retval) { | |
802 | rt2x00queue_uninitialize(rt2x00dev); | |
803 | return retval; | |
804 | } | |
805 | ||
0262ab0d | 806 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
807 | |
808 | return 0; | |
809 | } | |
810 | ||
811 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
812 | { | |
0262ab0d | 813 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
814 | return; |
815 | ||
816 | /* | |
817 | * Perhaps we can add something smarter here, | |
818 | * but for now just disabling the radio should do. | |
819 | */ | |
820 | rt2x00lib_disable_radio(rt2x00dev); | |
821 | ||
6bb40dd1 ID |
822 | rt2x00dev->intf_ap_count = 0; |
823 | rt2x00dev->intf_sta_count = 0; | |
824 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
825 | } |
826 | ||
95ea3627 ID |
827 | /* |
828 | * driver allocation handlers. | |
829 | */ | |
95ea3627 ID |
830 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
831 | { | |
832 | int retval = -ENOMEM; | |
833 | ||
8ff48a8b ID |
834 | mutex_init(&rt2x00dev->csr_mutex); |
835 | ||
66f84d65 SC |
836 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
837 | ||
6bb40dd1 ID |
838 | /* |
839 | * Make room for rt2x00_intf inside the per-interface | |
840 | * structure ieee80211_vif. | |
841 | */ | |
842 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
843 | ||
3514a441 ID |
844 | /* |
845 | * Determine which operating modes are supported, all modes | |
846 | * which require beaconing, depend on the availability of | |
847 | * beacon entries. | |
848 | */ | |
849 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
850 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
851 | rt2x00dev->hw->wiphy->interface_modes |= | |
852 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 853 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
854 | BIT(NL80211_IFTYPE_MESH_POINT) | |
855 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 856 | |
95ea3627 ID |
857 | /* |
858 | * Let the driver probe the device to detect the capabilities. | |
859 | */ | |
860 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
861 | if (retval) { | |
862 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
863 | goto exit; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Initialize configuration work. | |
868 | */ | |
6bb40dd1 | 869 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
95ea3627 | 870 | |
95ea3627 | 871 | /* |
181d6902 | 872 | * Allocate queue array. |
95ea3627 | 873 | */ |
181d6902 | 874 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
875 | if (retval) |
876 | goto exit; | |
877 | ||
878 | /* | |
879 | * Initialize ieee80211 structure. | |
880 | */ | |
881 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
882 | if (retval) { | |
883 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
884 | goto exit; | |
885 | } | |
886 | ||
a9450b70 | 887 | /* |
1682fe6d | 888 | * Register extra components. |
a9450b70 | 889 | */ |
84e3196f | 890 | rt2x00link_register(rt2x00dev); |
a9450b70 | 891 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
892 | rt2x00debug_register(rt2x00dev); |
893 | ||
894 | return 0; | |
895 | ||
896 | exit: | |
897 | rt2x00lib_remove_dev(rt2x00dev); | |
898 | ||
899 | return retval; | |
900 | } | |
901 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
902 | ||
903 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
904 | { | |
0262ab0d | 905 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 906 | |
95ea3627 ID |
907 | /* |
908 | * Disable radio. | |
909 | */ | |
910 | rt2x00lib_disable_radio(rt2x00dev); | |
911 | ||
d8cc8926 PR |
912 | /* |
913 | * Stop all work. | |
914 | */ | |
d8cc8926 PR |
915 | cancel_work_sync(&rt2x00dev->intf_work); |
916 | ||
95ea3627 ID |
917 | /* |
918 | * Uninitialize device. | |
919 | */ | |
920 | rt2x00lib_uninitialize(rt2x00dev); | |
921 | ||
922 | /* | |
1682fe6d | 923 | * Free extra components |
95ea3627 ID |
924 | */ |
925 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
926 | rt2x00leds_unregister(rt2x00dev); |
927 | ||
95ea3627 ID |
928 | /* |
929 | * Free ieee80211_hw memory. | |
930 | */ | |
931 | rt2x00lib_remove_hw(rt2x00dev); | |
932 | ||
933 | /* | |
934 | * Free firmware image. | |
935 | */ | |
936 | rt2x00lib_free_firmware(rt2x00dev); | |
937 | ||
938 | /* | |
181d6902 | 939 | * Free queue structures. |
95ea3627 | 940 | */ |
181d6902 | 941 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
942 | } |
943 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
944 | ||
945 | /* | |
946 | * Device state handlers | |
947 | */ | |
948 | #ifdef CONFIG_PM | |
949 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
950 | { | |
95ea3627 | 951 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
952 | |
953 | /* | |
07126127 | 954 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 955 | */ |
07126127 ID |
956 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
957 | return 0; | |
95ea3627 ID |
958 | |
959 | /* | |
07126127 | 960 | * Cleanup as much as possible. |
95ea3627 | 961 | */ |
95ea3627 | 962 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
963 | |
964 | /* | |
965 | * Suspend/disable extra components. | |
966 | */ | |
a9450b70 | 967 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
968 | rt2x00debug_deregister(rt2x00dev); |
969 | ||
970 | /* | |
9896322a ID |
971 | * Set device mode to sleep for power management, |
972 | * on some hardware this call seems to consistently fail. | |
973 | * From the specifications it is hard to tell why it fails, | |
974 | * and if this is a "bad thing". | |
975 | * Overall it is safe to just ignore the failure and | |
976 | * continue suspending. The only downside is that the | |
977 | * device will not be in optimal power save mode, but with | |
978 | * the radio and the other components already disabled the | |
979 | * device is as good as disabled. | |
95ea3627 | 980 | */ |
07126127 | 981 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
982 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
983 | "continue suspending.\n"); | |
95ea3627 ID |
984 | |
985 | return 0; | |
986 | } | |
987 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
988 | ||
989 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
990 | { | |
95ea3627 | 991 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
992 | |
993 | /* | |
1682fe6d | 994 | * Restore/enable extra components. |
95ea3627 ID |
995 | */ |
996 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 997 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 998 | |
e37ea213 ID |
999 | /* |
1000 | * We are ready again to receive requests from mac80211. | |
1001 | */ | |
0262ab0d | 1002 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1003 | |
95ea3627 | 1004 | return 0; |
95ea3627 ID |
1005 | } |
1006 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1007 | #endif /* CONFIG_PM */ | |
1008 | ||
1009 | /* | |
1010 | * rt2x00lib module information. | |
1011 | */ | |
1012 | MODULE_AUTHOR(DRV_PROJECT); | |
1013 | MODULE_VERSION(DRV_VERSION); | |
1014 | MODULE_DESCRIPTION("rt2x00 library"); | |
1015 | MODULE_LICENSE("GPL"); |