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> | |
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 | 71 | |
c965c74b ID |
72 | /* |
73 | * Start watchdog monitoring. | |
74 | */ | |
75 | rt2x00link_start_watchdog(rt2x00dev); | |
76 | ||
95ea3627 ID |
77 | /* |
78 | * Start the TX queues. | |
79 | */ | |
36d6825b | 80 | ieee80211_wake_queues(rt2x00dev->hw); |
95ea3627 ID |
81 | |
82 | return 0; | |
83 | } | |
84 | ||
85 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) | |
86 | { | |
0262ab0d | 87 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
88 | return; |
89 | ||
95ea3627 | 90 | /* |
a2c9b652 | 91 | * Stop the TX queues in mac80211. |
95ea3627 ID |
92 | */ |
93 | ieee80211_stop_queues(rt2x00dev->hw); | |
a2c9b652 | 94 | rt2x00queue_stop_queues(rt2x00dev); |
95ea3627 | 95 | |
c965c74b ID |
96 | /* |
97 | * Stop watchdog monitoring. | |
98 | */ | |
99 | rt2x00link_stop_watchdog(rt2x00dev); | |
100 | ||
95ea3627 ID |
101 | /* |
102 | * Disable RX. | |
103 | */ | |
5cbf830e | 104 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
105 | |
106 | /* | |
107 | * Disable radio. | |
108 | */ | |
109 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); | |
2b08da3f | 110 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
61c2b682 | 111 | rt2x00led_led_activity(rt2x00dev, false); |
a2e1d52a | 112 | rt2x00leds_led_radio(rt2x00dev, false); |
95ea3627 ID |
113 | } |
114 | ||
5cbf830e | 115 | void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) |
95ea3627 | 116 | { |
95ea3627 ID |
117 | /* |
118 | * When we are disabling the RX, we should also stop the link tuner. | |
119 | */ | |
5cbf830e | 120 | if (state == STATE_RADIO_RX_OFF) |
84e3196f | 121 | rt2x00link_stop_tuner(rt2x00dev); |
95ea3627 ID |
122 | |
123 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); | |
124 | ||
125 | /* | |
126 | * When we are enabling the RX, we should also start the link tuner. | |
127 | */ | |
84e3196f ID |
128 | if (state == STATE_RADIO_RX_ON) |
129 | rt2x00link_start_tuner(rt2x00dev); | |
95ea3627 ID |
130 | } |
131 | ||
6bb40dd1 ID |
132 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
133 | struct ieee80211_vif *vif) | |
5c58ee51 | 134 | { |
6bb40dd1 ID |
135 | struct rt2x00_dev *rt2x00dev = data; |
136 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
137 | int delayed_flags; |
138 | ||
139 | /* | |
140 | * Copy all data we need during this action under the protection | |
141 | * of a spinlock. Otherwise race conditions might occur which results | |
142 | * into an invalid configuration. | |
143 | */ | |
144 | spin_lock(&intf->lock); | |
145 | ||
6bb40dd1 ID |
146 | delayed_flags = intf->delayed_flags; |
147 | intf->delayed_flags = 0; | |
148 | ||
149 | spin_unlock(&intf->lock); | |
150 | ||
980dfcb9 ID |
151 | /* |
152 | * It is possible the radio was disabled while the work had been | |
153 | * scheduled. If that happens we should return here immediately, | |
154 | * note that in the spinlock protected area above the delayed_flags | |
155 | * have been cleared correctly. | |
156 | */ | |
0262ab0d | 157 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
980dfcb9 ID |
158 | return; |
159 | ||
bd88a781 | 160 | if (delayed_flags & DELAYED_UPDATE_BEACON) |
a2c9b652 | 161 | rt2x00queue_update_beacon(rt2x00dev, vif, true); |
6bb40dd1 | 162 | } |
5c58ee51 | 163 | |
6bb40dd1 ID |
164 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
165 | { | |
166 | struct rt2x00_dev *rt2x00dev = | |
167 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
168 | |
169 | /* | |
6bb40dd1 ID |
170 | * Iterate over each interface and perform the |
171 | * requested configurations. | |
471b3efd | 172 | */ |
6bb40dd1 ID |
173 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
174 | rt2x00lib_intf_scheduled_iter, | |
175 | rt2x00dev); | |
5c58ee51 ID |
176 | } |
177 | ||
95ea3627 ID |
178 | /* |
179 | * Interrupt context handlers. | |
180 | */ | |
6bb40dd1 ID |
181 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
182 | struct ieee80211_vif *vif) | |
95ea3627 | 183 | { |
6bb40dd1 | 184 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 185 | |
05c914fe | 186 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 187 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
188 | vif->type != NL80211_IFTYPE_MESH_POINT && |
189 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
190 | return; |
191 | ||
6bb40dd1 ID |
192 | spin_lock(&intf->lock); |
193 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
194 | spin_unlock(&intf->lock); | |
95ea3627 ID |
195 | } |
196 | ||
197 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
198 | { | |
0262ab0d | 199 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
200 | return; |
201 | ||
633257d3 ID |
202 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
203 | rt2x00lib_beacondone_iter, | |
204 | rt2x00dev); | |
6bb40dd1 | 205 | |
42935eca | 206 | ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work); |
95ea3627 ID |
207 | } |
208 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
209 | ||
181d6902 ID |
210 | void rt2x00lib_txdone(struct queue_entry *entry, |
211 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 212 | { |
181d6902 | 213 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 214 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 215 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 216 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
9f166171 | 217 | unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
92ed48e5 | 218 | u8 rate_idx, rate_flags, retry_rates; |
7351c6bd | 219 | u8 skbdesc_flags = skbdesc->flags; |
92ed48e5 | 220 | unsigned int i; |
2e27cff8 | 221 | bool success; |
d74f5ba4 | 222 | |
e513a0b6 GW |
223 | /* |
224 | * Unmap the skb. | |
225 | */ | |
226 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
227 | ||
228 | /* | |
229 | * Remove the extra tx headroom from the skb. | |
230 | */ | |
231 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); | |
232 | ||
233 | /* | |
234 | * Signal that the TX descriptor is no longer in the skb. | |
235 | */ | |
236 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; | |
237 | ||
9f166171 ID |
238 | /* |
239 | * Remove L2 padding which was added during | |
240 | */ | |
241 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
daee6c09 | 242 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 243 | |
2bb057d0 ID |
244 | /* |
245 | * If the IV/EIV data was stripped from the frame before it was | |
246 | * passed to the hardware, we should now reinsert it again because | |
77c2061d | 247 | * mac80211 will expect the same data to be present it the |
2bb057d0 ID |
248 | * frame as it was passed to us. |
249 | */ | |
250 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
9f166171 | 251 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
2bb057d0 | 252 | |
e039fa4a JB |
253 | /* |
254 | * Send frame to debugfs immediately, after this call is completed | |
255 | * we are going to overwrite the skb->cb array. | |
256 | */ | |
257 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
258 | |
259 | /* | |
2e27cff8 | 260 | * Determine if the frame has been successfully transmitted. |
95ea3627 | 261 | */ |
2e27cff8 | 262 | success = |
ce4c45e0 | 263 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
fd6dcb88 | 264 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
2e27cff8 ID |
265 | |
266 | /* | |
267 | * Update TX statistics. | |
268 | */ | |
269 | rt2x00dev->link.qual.tx_success += success; | |
270 | rt2x00dev->link.qual.tx_failed += !success; | |
95ea3627 | 271 | |
e6a9854b JB |
272 | rate_idx = skbdesc->tx_rate_idx; |
273 | rate_flags = skbdesc->tx_rate_flags; | |
92ed48e5 BP |
274 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
275 | (txdesc->retry + 1) : 1; | |
e6a9854b | 276 | |
181d6902 ID |
277 | /* |
278 | * Initialize TX status | |
279 | */ | |
e039fa4a JB |
280 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
281 | tx_info->status.ack_signal = 0; | |
92ed48e5 BP |
282 | |
283 | /* | |
284 | * Frame was send with retries, hardware tried | |
285 | * different rates to send out the frame, at each | |
3d2bc103 HS |
286 | * retry it lowered the rate 1 step except when the |
287 | * lowest rate was used. | |
92ed48e5 BP |
288 | */ |
289 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { | |
290 | tx_info->status.rates[i].idx = rate_idx - i; | |
291 | tx_info->status.rates[i].flags = rate_flags; | |
3d2bc103 HS |
292 | |
293 | if (rate_idx - i == 0) { | |
294 | /* | |
295 | * The lowest rate (index 0) was used until the | |
296 | * number of max retries was reached. | |
297 | */ | |
298 | tx_info->status.rates[i].count = retry_rates - i; | |
299 | i++; | |
300 | break; | |
301 | } | |
92ed48e5 BP |
302 | tx_info->status.rates[i].count = 1; |
303 | } | |
2e27cff8 | 304 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
92ed48e5 | 305 | tx_info->status.rates[i].idx = -1; /* terminate */ |
181d6902 | 306 | |
e039fa4a | 307 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
2e27cff8 | 308 | if (success) |
e039fa4a | 309 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
2e27cff8 | 310 | else |
181d6902 | 311 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
312 | } |
313 | ||
1df90809 HS |
314 | /* |
315 | * Every single frame has it's own tx status, hence report | |
316 | * every frame as ampdu of size 1. | |
317 | * | |
318 | * TODO: if we can find out how many frames were aggregated | |
319 | * by the hw we could provide the real ampdu_len to mac80211 | |
320 | * which would allow the rc algorithm to better decide on | |
321 | * which rates are suitable. | |
322 | */ | |
323 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
324 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; | |
325 | tx_info->status.ampdu_len = 1; | |
326 | tx_info->status.ampdu_ack_len = success ? 1 : 0; | |
327 | } | |
328 | ||
e6a9854b | 329 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
2e27cff8 | 330 | if (success) |
181d6902 | 331 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
2e27cff8 | 332 | else |
181d6902 | 333 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
334 | } |
335 | ||
336 | /* | |
7351c6bd JB |
337 | * Only send the status report to mac80211 when it's a frame |
338 | * that originated in mac80211. If this was a extra frame coming | |
339 | * through a mac80211 library call (RTS/CTS) then we should not | |
340 | * send the status report back. | |
95ea3627 | 341 | */ |
7351c6bd | 342 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) |
78e256c9 HS |
343 | /* |
344 | * Only PCI and SOC devices process the tx status in process | |
345 | * context. Hence use ieee80211_tx_status for PCI and SOC | |
346 | * devices and stick to ieee80211_tx_status_irqsafe for USB. | |
347 | */ | |
348 | if (rt2x00_is_usb(rt2x00dev)) | |
349 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
350 | else | |
351 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); | |
baf26a7e | 352 | else |
78e256c9 | 353 | dev_kfree_skb_any(entry->skb); |
d74f5ba4 ID |
354 | |
355 | /* | |
356 | * Make this entry available for reuse. | |
357 | */ | |
95ea3627 | 358 | entry->skb = NULL; |
d74f5ba4 ID |
359 | entry->flags = 0; |
360 | ||
798b7adb | 361 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 362 | |
0262ab0d | 363 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
364 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
365 | ||
366 | /* | |
367 | * If the data queue was below the threshold before the txdone | |
368 | * handler we must make sure the packet queue in the mac80211 stack | |
369 | * is reenabled when the txdone handler has finished. | |
370 | */ | |
371 | if (!rt2x00queue_threshold(entry->queue)) | |
372 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
373 | } |
374 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
375 | ||
35f00cfc ID |
376 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
377 | struct rxdone_entry_desc *rxdesc) | |
378 | { | |
379 | struct ieee80211_supported_band *sband; | |
380 | const struct rt2x00_rate *rate; | |
381 | unsigned int i; | |
382 | int signal; | |
383 | int type; | |
384 | ||
385 | /* | |
386 | * For non-HT rates the MCS value needs to contain the | |
387 | * actually used rate modulation (CCK or OFDM). | |
388 | */ | |
389 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) | |
390 | signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal); | |
391 | else | |
392 | signal = rxdesc->signal; | |
393 | ||
394 | type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); | |
395 | ||
396 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; | |
397 | for (i = 0; i < sband->n_bitrates; i++) { | |
398 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); | |
399 | ||
400 | if (((type == RXDONE_SIGNAL_PLCP) && | |
401 | (rate->plcp == signal)) || | |
402 | ((type == RXDONE_SIGNAL_BITRATE) && | |
403 | (rate->bitrate == signal)) || | |
404 | ((type == RXDONE_SIGNAL_MCS) && | |
405 | (rate->mcs == signal))) { | |
406 | return i; | |
407 | } | |
408 | } | |
409 | ||
410 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " | |
411 | "signal=0x%.4x, type=%d.\n", signal, type); | |
412 | return 0; | |
413 | } | |
414 | ||
c4da0048 GW |
415 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
416 | struct queue_entry *entry) | |
95ea3627 | 417 | { |
c4da0048 GW |
418 | struct rxdone_entry_desc rxdesc; |
419 | struct sk_buff *skb; | |
95ea3627 | 420 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
2bb057d0 | 421 | unsigned int header_length; |
35f00cfc | 422 | int rate_idx; |
c4da0048 GW |
423 | /* |
424 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
425 | * received frame and reuse the existing buffer. | |
426 | */ | |
427 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
428 | if (!skb) | |
429 | return; | |
430 | ||
431 | /* | |
432 | * Unmap the skb. | |
433 | */ | |
434 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
435 | ||
436 | /* | |
437 | * Extract the RXD details. | |
438 | */ | |
439 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
440 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 441 | |
239c249d GW |
442 | /* |
443 | * The data behind the ieee80211 header must be | |
a9f853dd | 444 | * aligned on a 4 byte boundary. |
239c249d | 445 | */ |
2bb057d0 | 446 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
239c249d | 447 | |
2bb057d0 ID |
448 | /* |
449 | * Hardware might have stripped the IV/EIV/ICV data, | |
450 | * in that case it is possible that the data was | |
3ad2f3fb | 451 | * provided separately (through hardware descriptor) |
2bb057d0 ID |
452 | * in which case we should reinsert the data into the frame. |
453 | */ | |
74415edb | 454 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
9f166171 | 455 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
daee6c09 | 456 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
9f166171 | 457 | &rxdesc); |
b7340833 GW |
458 | else if (header_length && |
459 | (rxdesc.size > header_length) && | |
460 | (rxdesc.dev_flags & RXDONE_L2PAD)) | |
daee6c09 | 461 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
9f166171 | 462 | else |
daee6c09 | 463 | rt2x00queue_align_payload(entry->skb, header_length); |
239c249d | 464 | |
1398d458 AB |
465 | /* Trim buffer to correct size */ |
466 | skb_trim(entry->skb, rxdesc.size); | |
467 | ||
95ea3627 | 468 | /* |
35f00cfc ID |
469 | * Check if the frame was received using HT. In that case, |
470 | * the rate is the MCS index and should be passed to mac80211 | |
471 | * directly. Otherwise we need to translate the signal to | |
472 | * the correct bitrate index. | |
95ea3627 | 473 | */ |
35f00cfc ID |
474 | if (rxdesc.rate_mode == RATE_MODE_CCK || |
475 | rxdesc.rate_mode == RATE_MODE_OFDM) { | |
476 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); | |
477 | } else { | |
478 | rxdesc.flags |= RX_FLAG_HT; | |
479 | rate_idx = rxdesc.signal; | |
866a0503 ID |
480 | } |
481 | ||
61af43c5 | 482 | /* |
84e3196f | 483 | * Update extra components |
61af43c5 | 484 | */ |
84e3196f ID |
485 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
486 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
69f81a2c | 487 | |
ae73e58e | 488 | rx_status->mactime = rxdesc.timestamp; |
35f00cfc | 489 | rx_status->rate_idx = rate_idx; |
c4da0048 GW |
490 | rx_status->signal = rxdesc.rssi; |
491 | rx_status->flag = rxdesc.flags; | |
69f81a2c | 492 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
493 | |
494 | /* | |
181d6902 ID |
495 | * Send frame to mac80211 & debugfs. |
496 | * mac80211 will clean up the skb structure. | |
95ea3627 | 497 | */ |
5a6e5999 | 498 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
f1d58c25 | 499 | memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status)); |
78e256c9 HS |
500 | |
501 | /* | |
502 | * Currently only PCI and SOC devices handle rx interrupts in process | |
503 | * context. Hence, use ieee80211_rx_irqsafe for USB and ieee80211_rx_ni | |
504 | * for PCI and SOC devices. | |
505 | */ | |
506 | if (rt2x00_is_usb(rt2x00dev)) | |
507 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb); | |
508 | else | |
509 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); | |
c4da0048 GW |
510 | |
511 | /* | |
512 | * Replace the skb with the freshly allocated one. | |
513 | */ | |
514 | entry->skb = skb; | |
d74f5ba4 ID |
515 | entry->flags = 0; |
516 | ||
798b7adb | 517 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
518 | |
519 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
520 | } |
521 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
522 | ||
95ea3627 ID |
523 | /* |
524 | * Driver initialization handlers. | |
525 | */ | |
70e2fed4 ID |
526 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
527 | { | |
3d8606a6 | 528 | .flags = DEV_RATE_CCK, |
70e2fed4 | 529 | .bitrate = 10, |
aa776721 | 530 | .ratemask = BIT(0), |
70e2fed4 | 531 | .plcp = 0x00, |
35f00cfc | 532 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
70e2fed4 ID |
533 | }, |
534 | { | |
3d8606a6 | 535 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 536 | .bitrate = 20, |
aa776721 | 537 | .ratemask = BIT(1), |
70e2fed4 | 538 | .plcp = 0x01, |
35f00cfc | 539 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
70e2fed4 ID |
540 | }, |
541 | { | |
3d8606a6 | 542 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 543 | .bitrate = 55, |
aa776721 | 544 | .ratemask = BIT(2), |
70e2fed4 | 545 | .plcp = 0x02, |
35f00cfc | 546 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
70e2fed4 ID |
547 | }, |
548 | { | |
3d8606a6 | 549 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 550 | .bitrate = 110, |
aa776721 | 551 | .ratemask = BIT(3), |
70e2fed4 | 552 | .plcp = 0x03, |
35f00cfc | 553 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
70e2fed4 ID |
554 | }, |
555 | { | |
3d8606a6 | 556 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 557 | .bitrate = 60, |
aa776721 | 558 | .ratemask = BIT(4), |
70e2fed4 | 559 | .plcp = 0x0b, |
35f00cfc | 560 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
70e2fed4 ID |
561 | }, |
562 | { | |
563 | .flags = DEV_RATE_OFDM, | |
564 | .bitrate = 90, | |
aa776721 | 565 | .ratemask = BIT(5), |
70e2fed4 | 566 | .plcp = 0x0f, |
35f00cfc | 567 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
70e2fed4 ID |
568 | }, |
569 | { | |
3d8606a6 | 570 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 571 | .bitrate = 120, |
aa776721 | 572 | .ratemask = BIT(6), |
70e2fed4 | 573 | .plcp = 0x0a, |
35f00cfc | 574 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
70e2fed4 ID |
575 | }, |
576 | { | |
577 | .flags = DEV_RATE_OFDM, | |
578 | .bitrate = 180, | |
aa776721 | 579 | .ratemask = BIT(7), |
70e2fed4 | 580 | .plcp = 0x0e, |
35f00cfc | 581 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
70e2fed4 ID |
582 | }, |
583 | { | |
3d8606a6 | 584 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 585 | .bitrate = 240, |
aa776721 | 586 | .ratemask = BIT(8), |
70e2fed4 | 587 | .plcp = 0x09, |
35f00cfc | 588 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
70e2fed4 ID |
589 | }, |
590 | { | |
591 | .flags = DEV_RATE_OFDM, | |
592 | .bitrate = 360, | |
aa776721 | 593 | .ratemask = BIT(9), |
70e2fed4 | 594 | .plcp = 0x0d, |
35f00cfc | 595 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
70e2fed4 ID |
596 | }, |
597 | { | |
598 | .flags = DEV_RATE_OFDM, | |
599 | .bitrate = 480, | |
aa776721 | 600 | .ratemask = BIT(10), |
70e2fed4 | 601 | .plcp = 0x08, |
35f00cfc | 602 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
70e2fed4 ID |
603 | }, |
604 | { | |
605 | .flags = DEV_RATE_OFDM, | |
606 | .bitrate = 540, | |
aa776721 | 607 | .ratemask = BIT(11), |
70e2fed4 | 608 | .plcp = 0x0c, |
35f00cfc | 609 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
70e2fed4 ID |
610 | }, |
611 | }; | |
612 | ||
95ea3627 ID |
613 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
614 | const int channel, const int tx_power, | |
615 | const int value) | |
616 | { | |
f2a3c7f5 | 617 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
618 | entry->hw_value = value; |
619 | entry->max_power = tx_power; | |
620 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
621 | } |
622 | ||
623 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 624 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 625 | { |
70e2fed4 ID |
626 | entry->flags = 0; |
627 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
628 | entry->hw_value =index; |
629 | entry->hw_value_short = index; | |
70e2fed4 | 630 | |
3ea96463 | 631 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 632 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
633 | } |
634 | ||
635 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
636 | struct hw_mode_spec *spec) | |
637 | { | |
638 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
639 | struct ieee80211_channel *channels; |
640 | struct ieee80211_rate *rates; | |
31562e80 | 641 | unsigned int num_rates; |
95ea3627 | 642 | unsigned int i; |
95ea3627 | 643 | |
31562e80 ID |
644 | num_rates = 0; |
645 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
646 | num_rates += 4; | |
647 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
648 | num_rates += 8; | |
95ea3627 ID |
649 | |
650 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
651 | if (!channels) | |
8318d78a | 652 | return -ENOMEM; |
95ea3627 | 653 | |
31562e80 | 654 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
655 | if (!rates) |
656 | goto exit_free_channels; | |
657 | ||
658 | /* | |
659 | * Initialize Rate list. | |
660 | */ | |
31562e80 | 661 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 662 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
663 | |
664 | /* | |
665 | * Initialize Channel list. | |
666 | */ | |
667 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 668 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
669 | spec->channels[i].channel, |
670 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
671 | } |
672 | ||
673 | /* | |
31562e80 | 674 | * Intitialize 802.11b, 802.11g |
95ea3627 | 675 | * Rates: CCK, OFDM. |
8318d78a | 676 | * Channels: 2.4 GHz |
95ea3627 | 677 | */ |
47ac2683 | 678 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
679 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
680 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
681 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
682 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
683 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
684 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
35f00cfc ID |
685 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
686 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
687 | } |
688 | ||
689 | /* | |
690 | * Intitialize 802.11a | |
691 | * Rates: OFDM. | |
692 | * Channels: OFDM, UNII, HiperLAN2. | |
693 | */ | |
47ac2683 | 694 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
695 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
696 | spec->num_channels - 14; | |
697 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
698 | num_rates - 4; | |
699 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
700 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
701 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
702 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
35f00cfc ID |
703 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
704 | &spec->ht, sizeof(spec->ht)); | |
95ea3627 ID |
705 | } |
706 | ||
95ea3627 ID |
707 | return 0; |
708 | ||
8318d78a | 709 | exit_free_channels: |
95ea3627 | 710 | kfree(channels); |
95ea3627 ID |
711 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
712 | return -ENOMEM; | |
713 | } | |
714 | ||
715 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
716 | { | |
0262ab0d | 717 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
718 | ieee80211_unregister_hw(rt2x00dev->hw); |
719 | ||
8318d78a JB |
720 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
721 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
722 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
723 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
724 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 725 | } |
8c5e7a5f ID |
726 | |
727 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
728 | } |
729 | ||
730 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
731 | { | |
732 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
733 | int status; | |
734 | ||
0262ab0d ID |
735 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
736 | return 0; | |
737 | ||
95ea3627 ID |
738 | /* |
739 | * Initialize HW modes. | |
740 | */ | |
741 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
742 | if (status) | |
743 | return status; | |
744 | ||
61448f88 GW |
745 | /* |
746 | * Initialize HW fields. | |
747 | */ | |
748 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
749 | ||
e6218cc4 GW |
750 | /* |
751 | * Initialize extra TX headroom required. | |
752 | */ | |
7a4a77b7 GW |
753 | rt2x00dev->hw->extra_tx_headroom = |
754 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, | |
755 | rt2x00dev->ops->extra_tx_headroom); | |
756 | ||
757 | /* | |
758 | * Take TX headroom required for alignment into account. | |
759 | */ | |
760 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) | |
761 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; | |
762 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) | |
763 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; | |
e6218cc4 | 764 | |
95ea3627 ID |
765 | /* |
766 | * Register HW. | |
767 | */ | |
768 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 769 | if (status) |
95ea3627 | 770 | return status; |
95ea3627 | 771 | |
0262ab0d | 772 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
773 | |
774 | return 0; | |
775 | } | |
776 | ||
777 | /* | |
778 | * Initialization/uninitialization handlers. | |
779 | */ | |
e37ea213 | 780 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 781 | { |
0262ab0d | 782 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
783 | return; |
784 | ||
785 | /* | |
1682fe6d | 786 | * Unregister extra components. |
95ea3627 ID |
787 | */ |
788 | rt2x00rfkill_unregister(rt2x00dev); | |
789 | ||
790 | /* | |
791 | * Allow the HW to uninitialize. | |
792 | */ | |
793 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
794 | ||
795 | /* | |
181d6902 | 796 | * Free allocated queue entries. |
95ea3627 | 797 | */ |
181d6902 | 798 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
799 | } |
800 | ||
e37ea213 | 801 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
802 | { |
803 | int status; | |
804 | ||
0262ab0d | 805 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
806 | return 0; |
807 | ||
808 | /* | |
181d6902 | 809 | * Allocate all queue entries. |
95ea3627 | 810 | */ |
181d6902 ID |
811 | status = rt2x00queue_initialize(rt2x00dev); |
812 | if (status) | |
95ea3627 | 813 | return status; |
95ea3627 ID |
814 | |
815 | /* | |
816 | * Initialize the device. | |
817 | */ | |
818 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
819 | if (status) { |
820 | rt2x00queue_uninitialize(rt2x00dev); | |
821 | return status; | |
822 | } | |
95ea3627 | 823 | |
0262ab0d | 824 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
825 | |
826 | /* | |
1682fe6d | 827 | * Register the extra components. |
95ea3627 | 828 | */ |
1682fe6d | 829 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
830 | |
831 | return 0; | |
95ea3627 ID |
832 | } |
833 | ||
e37ea213 ID |
834 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
835 | { | |
836 | int retval; | |
837 | ||
0262ab0d | 838 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
839 | return 0; |
840 | ||
841 | /* | |
842 | * If this is the first interface which is added, | |
843 | * we should load the firmware now. | |
844 | */ | |
9404ef34 ID |
845 | retval = rt2x00lib_load_firmware(rt2x00dev); |
846 | if (retval) | |
847 | return retval; | |
e37ea213 ID |
848 | |
849 | /* | |
850 | * Initialize the device. | |
851 | */ | |
852 | retval = rt2x00lib_initialize(rt2x00dev); | |
853 | if (retval) | |
854 | return retval; | |
855 | ||
6bb40dd1 ID |
856 | rt2x00dev->intf_ap_count = 0; |
857 | rt2x00dev->intf_sta_count = 0; | |
858 | rt2x00dev->intf_associated = 0; | |
859 | ||
bdfa500b ID |
860 | /* Enable the radio */ |
861 | retval = rt2x00lib_enable_radio(rt2x00dev); | |
862 | if (retval) { | |
863 | rt2x00queue_uninitialize(rt2x00dev); | |
864 | return retval; | |
865 | } | |
866 | ||
0262ab0d | 867 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
868 | |
869 | return 0; | |
870 | } | |
871 | ||
872 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
873 | { | |
0262ab0d | 874 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
875 | return; |
876 | ||
877 | /* | |
878 | * Perhaps we can add something smarter here, | |
879 | * but for now just disabling the radio should do. | |
880 | */ | |
881 | rt2x00lib_disable_radio(rt2x00dev); | |
882 | ||
6bb40dd1 ID |
883 | rt2x00dev->intf_ap_count = 0; |
884 | rt2x00dev->intf_sta_count = 0; | |
885 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
886 | } |
887 | ||
95ea3627 ID |
888 | /* |
889 | * driver allocation handlers. | |
890 | */ | |
95ea3627 ID |
891 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
892 | { | |
893 | int retval = -ENOMEM; | |
894 | ||
8ff48a8b ID |
895 | mutex_init(&rt2x00dev->csr_mutex); |
896 | ||
66f84d65 SC |
897 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
898 | ||
6bb40dd1 ID |
899 | /* |
900 | * Make room for rt2x00_intf inside the per-interface | |
901 | * structure ieee80211_vif. | |
902 | */ | |
903 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
904 | ||
3514a441 ID |
905 | /* |
906 | * Determine which operating modes are supported, all modes | |
907 | * which require beaconing, depend on the availability of | |
908 | * beacon entries. | |
909 | */ | |
910 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
911 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
912 | rt2x00dev->hw->wiphy->interface_modes |= | |
913 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 914 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
915 | BIT(NL80211_IFTYPE_MESH_POINT) | |
916 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 917 | |
95ea3627 ID |
918 | /* |
919 | * Let the driver probe the device to detect the capabilities. | |
920 | */ | |
921 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
922 | if (retval) { | |
923 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
924 | goto exit; | |
925 | } | |
926 | ||
927 | /* | |
928 | * Initialize configuration work. | |
929 | */ | |
6bb40dd1 | 930 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
95ea3627 | 931 | |
95ea3627 | 932 | /* |
181d6902 | 933 | * Allocate queue array. |
95ea3627 | 934 | */ |
181d6902 | 935 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
936 | if (retval) |
937 | goto exit; | |
938 | ||
939 | /* | |
940 | * Initialize ieee80211 structure. | |
941 | */ | |
942 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
943 | if (retval) { | |
944 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
945 | goto exit; | |
946 | } | |
947 | ||
a9450b70 | 948 | /* |
1682fe6d | 949 | * Register extra components. |
a9450b70 | 950 | */ |
84e3196f | 951 | rt2x00link_register(rt2x00dev); |
a9450b70 | 952 | rt2x00leds_register(rt2x00dev); |
95ea3627 ID |
953 | rt2x00debug_register(rt2x00dev); |
954 | ||
955 | return 0; | |
956 | ||
957 | exit: | |
958 | rt2x00lib_remove_dev(rt2x00dev); | |
959 | ||
960 | return retval; | |
961 | } | |
962 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
963 | ||
964 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
965 | { | |
0262ab0d | 966 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 967 | |
95ea3627 ID |
968 | /* |
969 | * Disable radio. | |
970 | */ | |
971 | rt2x00lib_disable_radio(rt2x00dev); | |
972 | ||
d8cc8926 PR |
973 | /* |
974 | * Stop all work. | |
975 | */ | |
d8cc8926 PR |
976 | cancel_work_sync(&rt2x00dev->intf_work); |
977 | ||
95ea3627 ID |
978 | /* |
979 | * Uninitialize device. | |
980 | */ | |
981 | rt2x00lib_uninitialize(rt2x00dev); | |
982 | ||
983 | /* | |
1682fe6d | 984 | * Free extra components |
95ea3627 ID |
985 | */ |
986 | rt2x00debug_deregister(rt2x00dev); | |
a9450b70 ID |
987 | rt2x00leds_unregister(rt2x00dev); |
988 | ||
95ea3627 ID |
989 | /* |
990 | * Free ieee80211_hw memory. | |
991 | */ | |
992 | rt2x00lib_remove_hw(rt2x00dev); | |
993 | ||
994 | /* | |
995 | * Free firmware image. | |
996 | */ | |
997 | rt2x00lib_free_firmware(rt2x00dev); | |
998 | ||
999 | /* | |
181d6902 | 1000 | * Free queue structures. |
95ea3627 | 1001 | */ |
181d6902 | 1002 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
1003 | } |
1004 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
1005 | ||
1006 | /* | |
1007 | * Device state handlers | |
1008 | */ | |
1009 | #ifdef CONFIG_PM | |
1010 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
1011 | { | |
95ea3627 | 1012 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
1013 | |
1014 | /* | |
07126127 | 1015 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 1016 | */ |
07126127 ID |
1017 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
1018 | return 0; | |
95ea3627 ID |
1019 | |
1020 | /* | |
07126127 | 1021 | * Cleanup as much as possible. |
95ea3627 | 1022 | */ |
95ea3627 | 1023 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
1024 | |
1025 | /* | |
1026 | * Suspend/disable extra components. | |
1027 | */ | |
a9450b70 | 1028 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
1029 | rt2x00debug_deregister(rt2x00dev); |
1030 | ||
1031 | /* | |
9896322a ID |
1032 | * Set device mode to sleep for power management, |
1033 | * on some hardware this call seems to consistently fail. | |
1034 | * From the specifications it is hard to tell why it fails, | |
1035 | * and if this is a "bad thing". | |
1036 | * Overall it is safe to just ignore the failure and | |
1037 | * continue suspending. The only downside is that the | |
1038 | * device will not be in optimal power save mode, but with | |
1039 | * the radio and the other components already disabled the | |
1040 | * device is as good as disabled. | |
95ea3627 | 1041 | */ |
07126127 | 1042 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
1043 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
1044 | "continue suspending.\n"); | |
95ea3627 ID |
1045 | |
1046 | return 0; | |
1047 | } | |
1048 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
1049 | ||
1050 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
1051 | { | |
95ea3627 | 1052 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
1053 | |
1054 | /* | |
1682fe6d | 1055 | * Restore/enable extra components. |
95ea3627 ID |
1056 | */ |
1057 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 1058 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 1059 | |
e37ea213 ID |
1060 | /* |
1061 | * We are ready again to receive requests from mac80211. | |
1062 | */ | |
0262ab0d | 1063 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 1064 | |
95ea3627 | 1065 | return 0; |
95ea3627 ID |
1066 | } |
1067 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
1068 | #endif /* CONFIG_PM */ | |
1069 | ||
1070 | /* | |
1071 | * rt2x00lib module information. | |
1072 | */ | |
1073 | MODULE_AUTHOR(DRV_PROJECT); | |
1074 | MODULE_VERSION(DRV_VERSION); | |
1075 | MODULE_DESCRIPTION("rt2x00 library"); | |
1076 | MODULE_LICENSE("GPL"); |