Commit | Line | Data |
---|---|---|
95ea3627 | 1 | /* |
4e54c711 | 2 | Copyright (C) 2004 - 2009 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00lib | |
23 | Abstract: rt2x00 generic device routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
95ea3627 ID |
32 | /* |
33 | * Radio control handlers. | |
34 | */ | |
35 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) | |
36 | { | |
37 | int status; | |
38 | ||
39 | /* | |
40 | * Don't enable the radio twice. | |
41 | * And check if the hardware button has been disabled. | |
42 | */ | |
0262ab0d ID |
43 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) || |
44 | test_bit(DEVICE_STATE_DISABLED_RADIO_HW, &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 | ||
4150c572 JB |
122 | static void rt2x00lib_packetfilter_scheduled(struct work_struct *work) |
123 | { | |
124 | struct rt2x00_dev *rt2x00dev = | |
125 | container_of(work, struct rt2x00_dev, filter_work); | |
5886d0db | 126 | |
133adf08 | 127 | rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter); |
4150c572 JB |
128 | } |
129 | ||
6bb40dd1 ID |
130 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
131 | struct ieee80211_vif *vif) | |
5c58ee51 | 132 | { |
6bb40dd1 ID |
133 | struct rt2x00_dev *rt2x00dev = data; |
134 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
6bb40dd1 ID |
135 | struct ieee80211_bss_conf conf; |
136 | int delayed_flags; | |
137 | ||
138 | /* | |
139 | * Copy all data we need during this action under the protection | |
140 | * of a spinlock. Otherwise race conditions might occur which results | |
141 | * into an invalid configuration. | |
142 | */ | |
143 | spin_lock(&intf->lock); | |
144 | ||
c3fd7b41 | 145 | memcpy(&conf, &vif->bss_conf, sizeof(conf)); |
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 | |
72810379 | 163 | if (delayed_flags & DELAYED_CONFIG_ERP) |
980dfcb9 | 164 | rt2x00lib_config_erp(rt2x00dev, intf, &conf); |
a2e1d52a ID |
165 | |
166 | if (delayed_flags & DELAYED_LED_ASSOC) | |
167 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); | |
6bb40dd1 | 168 | } |
5c58ee51 | 169 | |
6bb40dd1 ID |
170 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
171 | { | |
172 | struct rt2x00_dev *rt2x00dev = | |
173 | container_of(work, struct rt2x00_dev, intf_work); | |
471b3efd JB |
174 | |
175 | /* | |
6bb40dd1 ID |
176 | * Iterate over each interface and perform the |
177 | * requested configurations. | |
471b3efd | 178 | */ |
6bb40dd1 ID |
179 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
180 | rt2x00lib_intf_scheduled_iter, | |
181 | rt2x00dev); | |
5c58ee51 ID |
182 | } |
183 | ||
95ea3627 ID |
184 | /* |
185 | * Interrupt context handlers. | |
186 | */ | |
6bb40dd1 ID |
187 | static void rt2x00lib_beacondone_iter(void *data, u8 *mac, |
188 | struct ieee80211_vif *vif) | |
95ea3627 | 189 | { |
c4da0048 | 190 | struct rt2x00_dev *rt2x00dev = data; |
6bb40dd1 | 191 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 | 192 | |
05c914fe | 193 | if (vif->type != NL80211_IFTYPE_AP && |
a07dbea2 | 194 | vif->type != NL80211_IFTYPE_ADHOC && |
ce292a64 ID |
195 | vif->type != NL80211_IFTYPE_MESH_POINT && |
196 | vif->type != NL80211_IFTYPE_WDS) | |
95ea3627 ID |
197 | return; |
198 | ||
c95edf54 GW |
199 | /* |
200 | * Clean up the beacon skb. | |
201 | */ | |
c4da0048 | 202 | rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb); |
c95edf54 GW |
203 | intf->beacon->skb = NULL; |
204 | ||
6bb40dd1 ID |
205 | spin_lock(&intf->lock); |
206 | intf->delayed_flags |= DELAYED_UPDATE_BEACON; | |
207 | spin_unlock(&intf->lock); | |
95ea3627 ID |
208 | } |
209 | ||
210 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) | |
211 | { | |
0262ab0d | 212 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
95ea3627 ID |
213 | return; |
214 | ||
633257d3 ID |
215 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
216 | rt2x00lib_beacondone_iter, | |
217 | rt2x00dev); | |
6bb40dd1 | 218 | |
382fe0f2 | 219 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); |
95ea3627 ID |
220 | } |
221 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); | |
222 | ||
181d6902 ID |
223 | void rt2x00lib_txdone(struct queue_entry *entry, |
224 | struct txdone_entry_desc *txdesc) | |
95ea3627 | 225 | { |
181d6902 | 226 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
e039fa4a | 227 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
e6a9854b | 228 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
d74f5ba4 | 229 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
e6a9854b | 230 | u8 rate_idx, rate_flags; |
d74f5ba4 ID |
231 | |
232 | /* | |
233 | * Unmap the skb. | |
234 | */ | |
235 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
e039fa4a | 236 | |
2bb057d0 ID |
237 | /* |
238 | * If the IV/EIV data was stripped from the frame before it was | |
239 | * passed to the hardware, we should now reinsert it again because | |
240 | * mac80211 will expect the the same data to be present it the | |
241 | * frame as it was passed to us. | |
242 | */ | |
243 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
244 | rt2x00crypto_tx_insert_iv(entry->skb); | |
245 | ||
e039fa4a JB |
246 | /* |
247 | * Send frame to debugfs immediately, after this call is completed | |
248 | * we are going to overwrite the skb->cb array. | |
249 | */ | |
250 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); | |
95ea3627 ID |
251 | |
252 | /* | |
253 | * Update TX statistics. | |
254 | */ | |
fb55f4d1 ID |
255 | rt2x00dev->link.qual.tx_success += |
256 | test_bit(TXDONE_SUCCESS, &txdesc->flags); | |
257 | rt2x00dev->link.qual.tx_failed += | |
cb14cb79 | 258 | test_bit(TXDONE_FAILURE, &txdesc->flags); |
95ea3627 | 259 | |
e6a9854b JB |
260 | rate_idx = skbdesc->tx_rate_idx; |
261 | rate_flags = skbdesc->tx_rate_flags; | |
262 | ||
181d6902 ID |
263 | /* |
264 | * Initialize TX status | |
265 | */ | |
e039fa4a JB |
266 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
267 | tx_info->status.ack_signal = 0; | |
e6a9854b JB |
268 | tx_info->status.rates[0].idx = rate_idx; |
269 | tx_info->status.rates[0].flags = rate_flags; | |
270 | tx_info->status.rates[0].count = txdesc->retry + 1; | |
271 | tx_info->status.rates[1].idx = -1; /* terminate */ | |
181d6902 | 272 | |
e039fa4a | 273 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
fb55f4d1 | 274 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
e039fa4a | 275 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
fb55f4d1 | 276 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 277 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
95ea3627 ID |
278 | } |
279 | ||
e6a9854b | 280 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
fb55f4d1 | 281 | if (test_bit(TXDONE_SUCCESS, &txdesc->flags)) |
181d6902 | 282 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
fb55f4d1 | 283 | else if (test_bit(TXDONE_FAILURE, &txdesc->flags)) |
181d6902 | 284 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
95ea3627 ID |
285 | } |
286 | ||
287 | /* | |
e039fa4a JB |
288 | * Only send the status report to mac80211 when TX status was |
289 | * requested by it. If this was a extra frame coming through | |
290 | * a mac80211 library call (RTS/CTS) then we should not send the | |
291 | * status report back. | |
95ea3627 | 292 | */ |
e039fa4a JB |
293 | if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) |
294 | ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb); | |
baf26a7e | 295 | else |
fb55f4d1 | 296 | dev_kfree_skb_irq(entry->skb); |
d74f5ba4 ID |
297 | |
298 | /* | |
299 | * Make this entry available for reuse. | |
300 | */ | |
95ea3627 | 301 | entry->skb = NULL; |
d74f5ba4 ID |
302 | entry->flags = 0; |
303 | ||
798b7adb | 304 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 | 305 | |
0262ab0d | 306 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
d74f5ba4 ID |
307 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
308 | ||
309 | /* | |
310 | * If the data queue was below the threshold before the txdone | |
311 | * handler we must make sure the packet queue in the mac80211 stack | |
312 | * is reenabled when the txdone handler has finished. | |
313 | */ | |
314 | if (!rt2x00queue_threshold(entry->queue)) | |
315 | ieee80211_wake_queue(rt2x00dev->hw, qid); | |
95ea3627 ID |
316 | } |
317 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); | |
318 | ||
c4da0048 GW |
319 | void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
320 | struct queue_entry *entry) | |
95ea3627 | 321 | { |
c4da0048 GW |
322 | struct rxdone_entry_desc rxdesc; |
323 | struct sk_buff *skb; | |
95ea3627 | 324 | struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; |
8318d78a | 325 | struct ieee80211_supported_band *sband; |
70e2fed4 | 326 | const struct rt2x00_rate *rate; |
2bb057d0 | 327 | unsigned int header_length; |
239c249d | 328 | unsigned int align; |
95ea3627 | 329 | unsigned int i; |
70e2fed4 | 330 | int idx = -1; |
95ea3627 | 331 | |
c4da0048 GW |
332 | /* |
333 | * Allocate a new sk_buffer. If no new buffer available, drop the | |
334 | * received frame and reuse the existing buffer. | |
335 | */ | |
336 | skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry); | |
337 | if (!skb) | |
338 | return; | |
339 | ||
340 | /* | |
341 | * Unmap the skb. | |
342 | */ | |
343 | rt2x00queue_unmap_skb(rt2x00dev, entry->skb); | |
344 | ||
345 | /* | |
346 | * Extract the RXD details. | |
347 | */ | |
348 | memset(&rxdesc, 0, sizeof(rxdesc)); | |
349 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); | |
95ea3627 | 350 | |
239c249d GW |
351 | /* |
352 | * The data behind the ieee80211 header must be | |
a9f853dd | 353 | * aligned on a 4 byte boundary. |
239c249d | 354 | */ |
2bb057d0 ID |
355 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
356 | align = ((unsigned long)(entry->skb->data + header_length)) & 3; | |
239c249d | 357 | |
2bb057d0 ID |
358 | /* |
359 | * Hardware might have stripped the IV/EIV/ICV data, | |
360 | * in that case it is possible that the data was | |
361 | * provided seperately (through hardware descriptor) | |
362 | * in which case we should reinsert the data into the frame. | |
363 | */ | |
74415edb ID |
364 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
365 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) { | |
2bb057d0 ID |
366 | rt2x00crypto_rx_insert_iv(entry->skb, align, |
367 | header_length, &rxdesc); | |
368 | } else if (align) { | |
239c249d GW |
369 | skb_push(entry->skb, align); |
370 | /* Move entire frame in 1 command */ | |
371 | memmove(entry->skb->data, entry->skb->data + align, | |
c4da0048 | 372 | rxdesc.size); |
239c249d GW |
373 | } |
374 | ||
375 | /* Update data pointers, trim buffer to correct size */ | |
c4da0048 | 376 | skb_trim(entry->skb, rxdesc.size); |
239c249d | 377 | |
95ea3627 ID |
378 | /* |
379 | * Update RX statistics. | |
380 | */ | |
8318d78a JB |
381 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
382 | for (i = 0; i < sband->n_bitrates; i++) { | |
70e2fed4 | 383 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
95ea3627 | 384 | |
c4da0048 GW |
385 | if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) && |
386 | (rate->plcp == rxdesc.signal)) || | |
6c6aa3c0 | 387 | ((rxdesc.dev_flags & RXDONE_SIGNAL_BITRATE) && |
c4da0048 | 388 | (rate->bitrate == rxdesc.signal))) { |
8318d78a | 389 | idx = i; |
95ea3627 ID |
390 | break; |
391 | } | |
392 | } | |
393 | ||
866a0503 ID |
394 | if (idx < 0) { |
395 | WARNING(rt2x00dev, "Frame received with unrecognized signal," | |
b30dd5c0 ID |
396 | "signal=0x%.2x, type=%d.\n", rxdesc.signal, |
397 | (rxdesc.dev_flags & RXDONE_SIGNAL_MASK)); | |
866a0503 ID |
398 | idx = 0; |
399 | } | |
400 | ||
61af43c5 | 401 | /* |
84e3196f | 402 | * Update extra components |
61af43c5 | 403 | */ |
84e3196f ID |
404 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
405 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); | |
69f81a2c | 406 | |
ae73e58e | 407 | rx_status->mactime = rxdesc.timestamp; |
8318d78a | 408 | rx_status->rate_idx = idx; |
84e3196f | 409 | rx_status->qual = rt2x00link_calculate_signal(rt2x00dev, rxdesc.rssi); |
c4da0048 | 410 | rx_status->signal = rxdesc.rssi; |
2bdb35c7 | 411 | rx_status->noise = rxdesc.noise; |
c4da0048 | 412 | rx_status->flag = rxdesc.flags; |
69f81a2c | 413 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
95ea3627 ID |
414 | |
415 | /* | |
181d6902 ID |
416 | * Send frame to mac80211 & debugfs. |
417 | * mac80211 will clean up the skb structure. | |
95ea3627 | 418 | */ |
5a6e5999 | 419 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
181d6902 | 420 | ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status); |
c4da0048 GW |
421 | |
422 | /* | |
423 | * Replace the skb with the freshly allocated one. | |
424 | */ | |
425 | entry->skb = skb; | |
d74f5ba4 ID |
426 | entry->flags = 0; |
427 | ||
798b7adb | 428 | rt2x00dev->ops->lib->clear_entry(entry); |
d74f5ba4 ID |
429 | |
430 | rt2x00queue_index_inc(entry->queue, Q_INDEX); | |
95ea3627 ID |
431 | } |
432 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); | |
433 | ||
95ea3627 ID |
434 | /* |
435 | * Driver initialization handlers. | |
436 | */ | |
70e2fed4 ID |
437 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
438 | { | |
3d8606a6 | 439 | .flags = DEV_RATE_CCK, |
70e2fed4 | 440 | .bitrate = 10, |
aa776721 | 441 | .ratemask = BIT(0), |
70e2fed4 ID |
442 | .plcp = 0x00, |
443 | }, | |
444 | { | |
3d8606a6 | 445 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 446 | .bitrate = 20, |
aa776721 | 447 | .ratemask = BIT(1), |
70e2fed4 ID |
448 | .plcp = 0x01, |
449 | }, | |
450 | { | |
3d8606a6 | 451 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 452 | .bitrate = 55, |
aa776721 | 453 | .ratemask = BIT(2), |
70e2fed4 ID |
454 | .plcp = 0x02, |
455 | }, | |
456 | { | |
3d8606a6 | 457 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
70e2fed4 | 458 | .bitrate = 110, |
aa776721 | 459 | .ratemask = BIT(3), |
70e2fed4 ID |
460 | .plcp = 0x03, |
461 | }, | |
462 | { | |
3d8606a6 | 463 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 464 | .bitrate = 60, |
aa776721 | 465 | .ratemask = BIT(4), |
70e2fed4 ID |
466 | .plcp = 0x0b, |
467 | }, | |
468 | { | |
469 | .flags = DEV_RATE_OFDM, | |
470 | .bitrate = 90, | |
aa776721 | 471 | .ratemask = BIT(5), |
70e2fed4 ID |
472 | .plcp = 0x0f, |
473 | }, | |
474 | { | |
3d8606a6 | 475 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 476 | .bitrate = 120, |
aa776721 | 477 | .ratemask = BIT(6), |
70e2fed4 ID |
478 | .plcp = 0x0a, |
479 | }, | |
480 | { | |
481 | .flags = DEV_RATE_OFDM, | |
482 | .bitrate = 180, | |
aa776721 | 483 | .ratemask = BIT(7), |
70e2fed4 ID |
484 | .plcp = 0x0e, |
485 | }, | |
486 | { | |
3d8606a6 | 487 | .flags = DEV_RATE_OFDM, |
70e2fed4 | 488 | .bitrate = 240, |
aa776721 | 489 | .ratemask = BIT(8), |
70e2fed4 ID |
490 | .plcp = 0x09, |
491 | }, | |
492 | { | |
493 | .flags = DEV_RATE_OFDM, | |
494 | .bitrate = 360, | |
aa776721 | 495 | .ratemask = BIT(9), |
70e2fed4 ID |
496 | .plcp = 0x0d, |
497 | }, | |
498 | { | |
499 | .flags = DEV_RATE_OFDM, | |
500 | .bitrate = 480, | |
aa776721 | 501 | .ratemask = BIT(10), |
70e2fed4 ID |
502 | .plcp = 0x08, |
503 | }, | |
504 | { | |
505 | .flags = DEV_RATE_OFDM, | |
506 | .bitrate = 540, | |
aa776721 | 507 | .ratemask = BIT(11), |
70e2fed4 ID |
508 | .plcp = 0x0c, |
509 | }, | |
510 | }; | |
511 | ||
95ea3627 ID |
512 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
513 | const int channel, const int tx_power, | |
514 | const int value) | |
515 | { | |
f2a3c7f5 | 516 | entry->center_freq = ieee80211_channel_to_frequency(channel); |
8318d78a JB |
517 | entry->hw_value = value; |
518 | entry->max_power = tx_power; | |
519 | entry->max_antenna_gain = 0xff; | |
95ea3627 ID |
520 | } |
521 | ||
522 | static void rt2x00lib_rate(struct ieee80211_rate *entry, | |
70e2fed4 | 523 | const u16 index, const struct rt2x00_rate *rate) |
95ea3627 | 524 | { |
70e2fed4 ID |
525 | entry->flags = 0; |
526 | entry->bitrate = rate->bitrate; | |
3ea96463 ID |
527 | entry->hw_value =index; |
528 | entry->hw_value_short = index; | |
70e2fed4 | 529 | |
3ea96463 | 530 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
70e2fed4 | 531 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
95ea3627 ID |
532 | } |
533 | ||
534 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, | |
535 | struct hw_mode_spec *spec) | |
536 | { | |
537 | struct ieee80211_hw *hw = rt2x00dev->hw; | |
95ea3627 ID |
538 | struct ieee80211_channel *channels; |
539 | struct ieee80211_rate *rates; | |
31562e80 | 540 | unsigned int num_rates; |
95ea3627 | 541 | unsigned int i; |
95ea3627 | 542 | |
31562e80 ID |
543 | num_rates = 0; |
544 | if (spec->supported_rates & SUPPORT_RATE_CCK) | |
545 | num_rates += 4; | |
546 | if (spec->supported_rates & SUPPORT_RATE_OFDM) | |
547 | num_rates += 8; | |
95ea3627 ID |
548 | |
549 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); | |
550 | if (!channels) | |
8318d78a | 551 | return -ENOMEM; |
95ea3627 | 552 | |
31562e80 | 553 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
95ea3627 ID |
554 | if (!rates) |
555 | goto exit_free_channels; | |
556 | ||
557 | /* | |
558 | * Initialize Rate list. | |
559 | */ | |
31562e80 | 560 | for (i = 0; i < num_rates; i++) |
8f5fa7f0 | 561 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
95ea3627 ID |
562 | |
563 | /* | |
564 | * Initialize Channel list. | |
565 | */ | |
566 | for (i = 0; i < spec->num_channels; i++) { | |
95ea3627 | 567 | rt2x00lib_channel(&channels[i], |
8c5e7a5f ID |
568 | spec->channels[i].channel, |
569 | spec->channels_info[i].tx_power1, i); | |
95ea3627 ID |
570 | } |
571 | ||
572 | /* | |
31562e80 | 573 | * Intitialize 802.11b, 802.11g |
95ea3627 | 574 | * Rates: CCK, OFDM. |
8318d78a | 575 | * Channels: 2.4 GHz |
95ea3627 | 576 | */ |
47ac2683 | 577 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
31562e80 ID |
578 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
579 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; | |
580 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; | |
581 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; | |
582 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
583 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; | |
95ea3627 ID |
584 | } |
585 | ||
586 | /* | |
587 | * Intitialize 802.11a | |
588 | * Rates: OFDM. | |
589 | * Channels: OFDM, UNII, HiperLAN2. | |
590 | */ | |
47ac2683 | 591 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
31562e80 ID |
592 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
593 | spec->num_channels - 14; | |
594 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = | |
595 | num_rates - 4; | |
596 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; | |
597 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; | |
598 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
599 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; | |
95ea3627 ID |
600 | } |
601 | ||
95ea3627 ID |
602 | return 0; |
603 | ||
8318d78a | 604 | exit_free_channels: |
95ea3627 | 605 | kfree(channels); |
95ea3627 ID |
606 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
607 | return -ENOMEM; | |
608 | } | |
609 | ||
610 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) | |
611 | { | |
0262ab0d | 612 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
95ea3627 ID |
613 | ieee80211_unregister_hw(rt2x00dev->hw); |
614 | ||
8318d78a JB |
615 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
616 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); | |
617 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); | |
618 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; | |
619 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; | |
95ea3627 | 620 | } |
8c5e7a5f ID |
621 | |
622 | kfree(rt2x00dev->spec.channels_info); | |
95ea3627 ID |
623 | } |
624 | ||
625 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) | |
626 | { | |
627 | struct hw_mode_spec *spec = &rt2x00dev->spec; | |
628 | int status; | |
629 | ||
0262ab0d ID |
630 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
631 | return 0; | |
632 | ||
95ea3627 ID |
633 | /* |
634 | * Initialize HW modes. | |
635 | */ | |
636 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); | |
637 | if (status) | |
638 | return status; | |
639 | ||
61448f88 GW |
640 | /* |
641 | * Initialize HW fields. | |
642 | */ | |
643 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; | |
644 | ||
95ea3627 ID |
645 | /* |
646 | * Register HW. | |
647 | */ | |
648 | status = ieee80211_register_hw(rt2x00dev->hw); | |
f05faa31 | 649 | if (status) |
95ea3627 | 650 | return status; |
95ea3627 | 651 | |
0262ab0d | 652 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
95ea3627 ID |
653 | |
654 | return 0; | |
655 | } | |
656 | ||
657 | /* | |
658 | * Initialization/uninitialization handlers. | |
659 | */ | |
e37ea213 | 660 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 | 661 | { |
0262ab0d | 662 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
663 | return; |
664 | ||
665 | /* | |
1682fe6d | 666 | * Unregister extra components. |
95ea3627 ID |
667 | */ |
668 | rt2x00rfkill_unregister(rt2x00dev); | |
669 | ||
670 | /* | |
671 | * Allow the HW to uninitialize. | |
672 | */ | |
673 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); | |
674 | ||
675 | /* | |
181d6902 | 676 | * Free allocated queue entries. |
95ea3627 | 677 | */ |
181d6902 | 678 | rt2x00queue_uninitialize(rt2x00dev); |
95ea3627 ID |
679 | } |
680 | ||
e37ea213 | 681 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
95ea3627 ID |
682 | { |
683 | int status; | |
684 | ||
0262ab0d | 685 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
95ea3627 ID |
686 | return 0; |
687 | ||
688 | /* | |
181d6902 | 689 | * Allocate all queue entries. |
95ea3627 | 690 | */ |
181d6902 ID |
691 | status = rt2x00queue_initialize(rt2x00dev); |
692 | if (status) | |
95ea3627 | 693 | return status; |
95ea3627 ID |
694 | |
695 | /* | |
696 | * Initialize the device. | |
697 | */ | |
698 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); | |
ed499983 ID |
699 | if (status) { |
700 | rt2x00queue_uninitialize(rt2x00dev); | |
701 | return status; | |
702 | } | |
95ea3627 | 703 | |
0262ab0d | 704 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
95ea3627 ID |
705 | |
706 | /* | |
1682fe6d | 707 | * Register the extra components. |
95ea3627 | 708 | */ |
1682fe6d | 709 | rt2x00rfkill_register(rt2x00dev); |
95ea3627 ID |
710 | |
711 | return 0; | |
95ea3627 ID |
712 | } |
713 | ||
e37ea213 ID |
714 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
715 | { | |
716 | int retval; | |
717 | ||
0262ab0d | 718 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
719 | return 0; |
720 | ||
721 | /* | |
722 | * If this is the first interface which is added, | |
723 | * we should load the firmware now. | |
724 | */ | |
9404ef34 ID |
725 | retval = rt2x00lib_load_firmware(rt2x00dev); |
726 | if (retval) | |
727 | return retval; | |
e37ea213 ID |
728 | |
729 | /* | |
730 | * Initialize the device. | |
731 | */ | |
732 | retval = rt2x00lib_initialize(rt2x00dev); | |
733 | if (retval) | |
734 | return retval; | |
735 | ||
6bb40dd1 ID |
736 | rt2x00dev->intf_ap_count = 0; |
737 | rt2x00dev->intf_sta_count = 0; | |
738 | rt2x00dev->intf_associated = 0; | |
739 | ||
0262ab0d | 740 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
e37ea213 ID |
741 | |
742 | return 0; | |
743 | } | |
744 | ||
745 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) | |
746 | { | |
0262ab0d | 747 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
e37ea213 ID |
748 | return; |
749 | ||
750 | /* | |
751 | * Perhaps we can add something smarter here, | |
752 | * but for now just disabling the radio should do. | |
753 | */ | |
754 | rt2x00lib_disable_radio(rt2x00dev); | |
755 | ||
6bb40dd1 ID |
756 | rt2x00dev->intf_ap_count = 0; |
757 | rt2x00dev->intf_sta_count = 0; | |
758 | rt2x00dev->intf_associated = 0; | |
e37ea213 ID |
759 | } |
760 | ||
95ea3627 ID |
761 | /* |
762 | * driver allocation handlers. | |
763 | */ | |
95ea3627 ID |
764 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
765 | { | |
766 | int retval = -ENOMEM; | |
767 | ||
8ff48a8b ID |
768 | mutex_init(&rt2x00dev->csr_mutex); |
769 | ||
6bb40dd1 ID |
770 | /* |
771 | * Make room for rt2x00_intf inside the per-interface | |
772 | * structure ieee80211_vif. | |
773 | */ | |
774 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); | |
775 | ||
3514a441 ID |
776 | /* |
777 | * Determine which operating modes are supported, all modes | |
778 | * which require beaconing, depend on the availability of | |
779 | * beacon entries. | |
780 | */ | |
781 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
782 | if (rt2x00dev->ops->bcn->entry_num > 0) | |
783 | rt2x00dev->hw->wiphy->interface_modes |= | |
784 | BIT(NL80211_IFTYPE_ADHOC) | | |
a07dbea2 | 785 | BIT(NL80211_IFTYPE_AP) | |
ce292a64 ID |
786 | BIT(NL80211_IFTYPE_MESH_POINT) | |
787 | BIT(NL80211_IFTYPE_WDS); | |
f59ac048 | 788 | |
95ea3627 ID |
789 | /* |
790 | * Let the driver probe the device to detect the capabilities. | |
791 | */ | |
792 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); | |
793 | if (retval) { | |
794 | ERROR(rt2x00dev, "Failed to allocate device.\n"); | |
795 | goto exit; | |
796 | } | |
797 | ||
798 | /* | |
799 | * Initialize configuration work. | |
800 | */ | |
6bb40dd1 | 801 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
4150c572 | 802 | INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled); |
95ea3627 | 803 | |
95ea3627 | 804 | /* |
181d6902 | 805 | * Allocate queue array. |
95ea3627 | 806 | */ |
181d6902 | 807 | retval = rt2x00queue_allocate(rt2x00dev); |
95ea3627 ID |
808 | if (retval) |
809 | goto exit; | |
810 | ||
811 | /* | |
812 | * Initialize ieee80211 structure. | |
813 | */ | |
814 | retval = rt2x00lib_probe_hw(rt2x00dev); | |
815 | if (retval) { | |
816 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); | |
817 | goto exit; | |
818 | } | |
819 | ||
a9450b70 | 820 | /* |
1682fe6d | 821 | * Register extra components. |
a9450b70 | 822 | */ |
84e3196f | 823 | rt2x00link_register(rt2x00dev); |
a9450b70 | 824 | rt2x00leds_register(rt2x00dev); |
1682fe6d | 825 | rt2x00rfkill_allocate(rt2x00dev); |
95ea3627 ID |
826 | rt2x00debug_register(rt2x00dev); |
827 | ||
0262ab0d | 828 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 829 | |
95ea3627 ID |
830 | return 0; |
831 | ||
832 | exit: | |
833 | rt2x00lib_remove_dev(rt2x00dev); | |
834 | ||
835 | return retval; | |
836 | } | |
837 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); | |
838 | ||
839 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) | |
840 | { | |
0262ab0d | 841 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
066cb637 | 842 | |
95ea3627 ID |
843 | /* |
844 | * Disable radio. | |
845 | */ | |
846 | rt2x00lib_disable_radio(rt2x00dev); | |
847 | ||
848 | /* | |
849 | * Uninitialize device. | |
850 | */ | |
851 | rt2x00lib_uninitialize(rt2x00dev); | |
852 | ||
853 | /* | |
1682fe6d | 854 | * Free extra components |
95ea3627 ID |
855 | */ |
856 | rt2x00debug_deregister(rt2x00dev); | |
95ea3627 | 857 | rt2x00rfkill_free(rt2x00dev); |
a9450b70 ID |
858 | rt2x00leds_unregister(rt2x00dev); |
859 | ||
95ea3627 ID |
860 | /* |
861 | * Free ieee80211_hw memory. | |
862 | */ | |
863 | rt2x00lib_remove_hw(rt2x00dev); | |
864 | ||
865 | /* | |
866 | * Free firmware image. | |
867 | */ | |
868 | rt2x00lib_free_firmware(rt2x00dev); | |
869 | ||
870 | /* | |
181d6902 | 871 | * Free queue structures. |
95ea3627 | 872 | */ |
181d6902 | 873 | rt2x00queue_free(rt2x00dev); |
95ea3627 ID |
874 | } |
875 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); | |
876 | ||
877 | /* | |
878 | * Device state handlers | |
879 | */ | |
880 | #ifdef CONFIG_PM | |
881 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) | |
882 | { | |
95ea3627 | 883 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
066cb637 ID |
884 | |
885 | /* | |
07126127 | 886 | * Prevent mac80211 from accessing driver while suspended. |
066cb637 | 887 | */ |
07126127 ID |
888 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
889 | return 0; | |
95ea3627 ID |
890 | |
891 | /* | |
07126127 | 892 | * Cleanup as much as possible. |
95ea3627 | 893 | */ |
95ea3627 | 894 | rt2x00lib_uninitialize(rt2x00dev); |
1682fe6d ID |
895 | |
896 | /* | |
897 | * Suspend/disable extra components. | |
898 | */ | |
a9450b70 | 899 | rt2x00leds_suspend(rt2x00dev); |
95ea3627 ID |
900 | rt2x00debug_deregister(rt2x00dev); |
901 | ||
902 | /* | |
9896322a ID |
903 | * Set device mode to sleep for power management, |
904 | * on some hardware this call seems to consistently fail. | |
905 | * From the specifications it is hard to tell why it fails, | |
906 | * and if this is a "bad thing". | |
907 | * Overall it is safe to just ignore the failure and | |
908 | * continue suspending. The only downside is that the | |
909 | * device will not be in optimal power save mode, but with | |
910 | * the radio and the other components already disabled the | |
911 | * device is as good as disabled. | |
95ea3627 | 912 | */ |
07126127 | 913 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
9896322a ID |
914 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
915 | "continue suspending.\n"); | |
95ea3627 ID |
916 | |
917 | return 0; | |
918 | } | |
919 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); | |
920 | ||
921 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) | |
922 | { | |
95ea3627 | 923 | NOTICE(rt2x00dev, "Waking up.\n"); |
95ea3627 ID |
924 | |
925 | /* | |
1682fe6d | 926 | * Restore/enable extra components. |
95ea3627 ID |
927 | */ |
928 | rt2x00debug_register(rt2x00dev); | |
a9450b70 | 929 | rt2x00leds_resume(rt2x00dev); |
95ea3627 | 930 | |
e37ea213 ID |
931 | /* |
932 | * We are ready again to receive requests from mac80211. | |
933 | */ | |
0262ab0d | 934 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
e37ea213 | 935 | |
95ea3627 | 936 | return 0; |
95ea3627 ID |
937 | } |
938 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); | |
939 | #endif /* CONFIG_PM */ | |
940 | ||
941 | /* | |
942 | * rt2x00lib module information. | |
943 | */ | |
944 | MODULE_AUTHOR(DRV_PROJECT); | |
945 | MODULE_VERSION(DRV_VERSION); | |
946 | MODULE_DESCRIPTION("rt2x00 library"); | |
947 | MODULE_LICENSE("GPL"); |