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i2c: gpio: fault-injector: refactor incomplete transfer
[linux/fpc-iii.git] / drivers / net / wireless / rsi / rsi_91x_mac80211.c
blob2ca7464b7fa370687d5917578312774ebf0dfebb
1 /**
2 * Copyright (c) 2014 Redpine Signals Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/etherdevice.h>
18 #include "rsi_debugfs.h"
19 #include "rsi_mgmt.h"
20 #include "rsi_sdio.h"
21 #include "rsi_common.h"
22 #include "rsi_ps.h"
23
24 static const struct ieee80211_channel rsi_2ghz_channels[] = {
25 { .band = NL80211_BAND_2GHZ, .center_freq = 2412,
26 .hw_value = 1 }, /* Channel 1 */
27 { .band = NL80211_BAND_2GHZ, .center_freq = 2417,
28 .hw_value = 2 }, /* Channel 2 */
29 { .band = NL80211_BAND_2GHZ, .center_freq = 2422,
30 .hw_value = 3 }, /* Channel 3 */
31 { .band = NL80211_BAND_2GHZ, .center_freq = 2427,
32 .hw_value = 4 }, /* Channel 4 */
33 { .band = NL80211_BAND_2GHZ, .center_freq = 2432,
34 .hw_value = 5 }, /* Channel 5 */
35 { .band = NL80211_BAND_2GHZ, .center_freq = 2437,
36 .hw_value = 6 }, /* Channel 6 */
37 { .band = NL80211_BAND_2GHZ, .center_freq = 2442,
38 .hw_value = 7 }, /* Channel 7 */
39 { .band = NL80211_BAND_2GHZ, .center_freq = 2447,
40 .hw_value = 8 }, /* Channel 8 */
41 { .band = NL80211_BAND_2GHZ, .center_freq = 2452,
42 .hw_value = 9 }, /* Channel 9 */
43 { .band = NL80211_BAND_2GHZ, .center_freq = 2457,
44 .hw_value = 10 }, /* Channel 10 */
45 { .band = NL80211_BAND_2GHZ, .center_freq = 2462,
46 .hw_value = 11 }, /* Channel 11 */
47 { .band = NL80211_BAND_2GHZ, .center_freq = 2467,
48 .hw_value = 12 }, /* Channel 12 */
49 { .band = NL80211_BAND_2GHZ, .center_freq = 2472,
50 .hw_value = 13 }, /* Channel 13 */
51 { .band = NL80211_BAND_2GHZ, .center_freq = 2484,
52 .hw_value = 14 }, /* Channel 14 */
53 };
54
55 static const struct ieee80211_channel rsi_5ghz_channels[] = {
56 { .band = NL80211_BAND_5GHZ, .center_freq = 5180,
57 .hw_value = 36, }, /* Channel 36 */
58 { .band = NL80211_BAND_5GHZ, .center_freq = 5200,
59 .hw_value = 40, }, /* Channel 40 */
60 { .band = NL80211_BAND_5GHZ, .center_freq = 5220,
61 .hw_value = 44, }, /* Channel 44 */
62 { .band = NL80211_BAND_5GHZ, .center_freq = 5240,
63 .hw_value = 48, }, /* Channel 48 */
64 { .band = NL80211_BAND_5GHZ, .center_freq = 5260,
65 .hw_value = 52, }, /* Channel 52 */
66 { .band = NL80211_BAND_5GHZ, .center_freq = 5280,
67 .hw_value = 56, }, /* Channel 56 */
68 { .band = NL80211_BAND_5GHZ, .center_freq = 5300,
69 .hw_value = 60, }, /* Channel 60 */
70 { .band = NL80211_BAND_5GHZ, .center_freq = 5320,
71 .hw_value = 64, }, /* Channel 64 */
72 { .band = NL80211_BAND_5GHZ, .center_freq = 5500,
73 .hw_value = 100, }, /* Channel 100 */
74 { .band = NL80211_BAND_5GHZ, .center_freq = 5520,
75 .hw_value = 104, }, /* Channel 104 */
76 { .band = NL80211_BAND_5GHZ, .center_freq = 5540,
77 .hw_value = 108, }, /* Channel 108 */
78 { .band = NL80211_BAND_5GHZ, .center_freq = 5560,
79 .hw_value = 112, }, /* Channel 112 */
80 { .band = NL80211_BAND_5GHZ, .center_freq = 5580,
81 .hw_value = 116, }, /* Channel 116 */
82 { .band = NL80211_BAND_5GHZ, .center_freq = 5600,
83 .hw_value = 120, }, /* Channel 120 */
84 { .band = NL80211_BAND_5GHZ, .center_freq = 5620,
85 .hw_value = 124, }, /* Channel 124 */
86 { .band = NL80211_BAND_5GHZ, .center_freq = 5640,
87 .hw_value = 128, }, /* Channel 128 */
88 { .band = NL80211_BAND_5GHZ, .center_freq = 5660,
89 .hw_value = 132, }, /* Channel 132 */
90 { .band = NL80211_BAND_5GHZ, .center_freq = 5680,
91 .hw_value = 136, }, /* Channel 136 */
92 { .band = NL80211_BAND_5GHZ, .center_freq = 5700,
93 .hw_value = 140, }, /* Channel 140 */
94 { .band = NL80211_BAND_5GHZ, .center_freq = 5745,
95 .hw_value = 149, }, /* Channel 149 */
96 { .band = NL80211_BAND_5GHZ, .center_freq = 5765,
97 .hw_value = 153, }, /* Channel 153 */
98 { .band = NL80211_BAND_5GHZ, .center_freq = 5785,
99 .hw_value = 157, }, /* Channel 157 */
100 { .band = NL80211_BAND_5GHZ, .center_freq = 5805,
101 .hw_value = 161, }, /* Channel 161 */
102 { .band = NL80211_BAND_5GHZ, .center_freq = 5825,
103 .hw_value = 165, }, /* Channel 165 */
104 };
105
106 struct ieee80211_rate rsi_rates[12] = {
107 { .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 },
108 { .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 },
109 { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 },
110 { .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 },
111 { .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 },
112 { .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 },
113 { .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 },
114 { .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 },
115 { .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 },
116 { .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 },
117 { .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 },
118 { .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 },
119 };
120
121 const u16 rsi_mcsrates[8] = {
122 RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3,
123 RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7
124 };
125
126 static const u32 rsi_max_ap_stas[16] = {
127 32, /* 1 - Wi-Fi alone */
128 0, /* 2 */
129 0, /* 3 */
130 0, /* 4 - BT EDR alone */
131 4, /* 5 - STA + BT EDR */
132 32, /* 6 - AP + BT EDR */
133 0, /* 7 */
134 0, /* 8 - BT LE alone */
135 4, /* 9 - STA + BE LE */
136 0, /* 10 */
137 0, /* 11 */
138 0, /* 12 */
139 1, /* 13 - STA + BT Dual */
140 4, /* 14 - AP + BT Dual */
141 };
142
143 static const struct ieee80211_iface_limit rsi_iface_limits[] = {
144 {
145 .max = 1,
146 .types = BIT(NL80211_IFTYPE_STATION),
147 },
148 {
149 .max = 1,
150 .types = BIT(NL80211_IFTYPE_AP) |
151 BIT(NL80211_IFTYPE_P2P_CLIENT) |
152 BIT(NL80211_IFTYPE_P2P_GO),
153 },
154 {
155 .max = 1,
156 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
157 },
158 };
159
160 static const struct ieee80211_iface_combination rsi_iface_combinations[] = {
161 {
162 .num_different_channels = 1,
163 .max_interfaces = 3,
164 .limits = rsi_iface_limits,
165 .n_limits = ARRAY_SIZE(rsi_iface_limits),
166 },
167 };
168
169 /**
170 * rsi_is_cipher_wep() - This function determines if the cipher is WEP or not.
171 * @common: Pointer to the driver private structure.
172 *
173 * Return: If cipher type is WEP, a value of 1 is returned, else 0.
174 */
175
176 bool rsi_is_cipher_wep(struct rsi_common *common)
177 {
178 if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) ||
179 (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) &&
180 (!common->secinfo.ptk_cipher))
181 return true;
182 else
183 return false;
184 }
185
186 /**
187 * rsi_register_rates_channels() - This function registers channels and rates.
188 * @adapter: Pointer to the adapter structure.
189 * @band: Operating band to be set.
190 *
191 * Return: None.
192 */
193 static void rsi_register_rates_channels(struct rsi_hw *adapter, int band)
194 {
195 struct ieee80211_supported_band *sbands = &adapter->sbands[band];
196 void *channels = NULL;
197
198 if (band == NL80211_BAND_2GHZ) {
199 channels = kmalloc(sizeof(rsi_2ghz_channels), GFP_KERNEL);
200 memcpy(channels,
201 rsi_2ghz_channels,
202 sizeof(rsi_2ghz_channels));
203 sbands->band = NL80211_BAND_2GHZ;
204 sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels);
205 sbands->bitrates = rsi_rates;
206 sbands->n_bitrates = ARRAY_SIZE(rsi_rates);
207 } else {
208 channels = kmalloc(sizeof(rsi_5ghz_channels), GFP_KERNEL);
209 memcpy(channels,
210 rsi_5ghz_channels,
211 sizeof(rsi_5ghz_channels));
212 sbands->band = NL80211_BAND_5GHZ;
213 sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels);
214 sbands->bitrates = &rsi_rates[4];
215 sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4;
216 }
217
218 sbands->channels = channels;
219
220 memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap));
221 sbands->ht_cap.ht_supported = true;
222 sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
223 IEEE80211_HT_CAP_SGI_20 |
224 IEEE80211_HT_CAP_SGI_40);
225 sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
226 sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
227 sbands->ht_cap.mcs.rx_mask[0] = 0xff;
228 sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
229 /* sbands->ht_cap.mcs.rx_highest = 0x82; */
230 }
231
232 /**
233 * rsi_mac80211_detach() - This function is used to de-initialize the
234 * Mac80211 stack.
235 * @adapter: Pointer to the adapter structure.
236 *
237 * Return: None.
238 */
239 void rsi_mac80211_detach(struct rsi_hw *adapter)
240 {
241 struct ieee80211_hw *hw = adapter->hw;
242 enum nl80211_band band;
243
244 if (hw) {
245 ieee80211_stop_queues(hw);
246 ieee80211_unregister_hw(hw);
247 ieee80211_free_hw(hw);
248 adapter->hw = NULL;
249 }
250
251 for (band = 0; band < NUM_NL80211_BANDS; band++) {
252 struct ieee80211_supported_band *sband =
253 &adapter->sbands[band];
254
255 kfree(sband->channels);
256 }
257
258 #ifdef CONFIG_RSI_DEBUGFS
259 rsi_remove_dbgfs(adapter);
260 kfree(adapter->dfsentry);
261 #endif
262 }
263 EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
264
265 /**
266 * rsi_indicate_tx_status() - This function indicates the transmit status.
267 * @adapter: Pointer to the adapter structure.
268 * @skb: Pointer to the socket buffer structure.
269 * @status: Status
270 *
271 * Return: None.
272 */
273 void rsi_indicate_tx_status(struct rsi_hw *adapter,
274 struct sk_buff *skb,
275 int status)
276 {
277 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
278 struct skb_info *tx_params;
279
280 if (!adapter->hw) {
281 rsi_dbg(ERR_ZONE, "##### No MAC #####\n");
282 return;
283 }
284
285 if (!status)
286 info->flags |= IEEE80211_TX_STAT_ACK;
287
288 tx_params = (struct skb_info *)info->driver_data;
289 skb_pull(skb, tx_params->internal_hdr_size);
290 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
291
292 ieee80211_tx_status_irqsafe(adapter->hw, skb);
293 }
294
295 /**
296 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
297 * transmitted frame.SKB contains the buffer starting
298 * from the IEEE 802.11 header.
299 * @hw: Pointer to the ieee80211_hw structure.
300 * @control: Pointer to the ieee80211_tx_control structure
301 * @skb: Pointer to the socket buffer structure.
302 *
303 * Return: None
304 */
305 static void rsi_mac80211_tx(struct ieee80211_hw *hw,
306 struct ieee80211_tx_control *control,
307 struct sk_buff *skb)
308 {
309 struct rsi_hw *adapter = hw->priv;
310 struct rsi_common *common = adapter->priv;
311
312 rsi_core_xmit(common, skb);
313 }
314
315 /**
316 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
317 * the driver init is complete by then, just
318 * returns success.
319 * @hw: Pointer to the ieee80211_hw structure.
320 *
321 * Return: 0 as success.
322 */
323 static int rsi_mac80211_start(struct ieee80211_hw *hw)
324 {
325 struct rsi_hw *adapter = hw->priv;
326 struct rsi_common *common = adapter->priv;
327
328 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
329 mutex_lock(&common->mutex);
330 if (common->hibernate_resume) {
331 common->reinit_hw = true;
332 adapter->host_intf_ops->reinit_device(adapter);
333 wait_for_completion(&adapter->priv->wlan_init_completion);
334 }
335 common->iface_down = false;
336 wiphy_rfkill_start_polling(hw->wiphy);
337 rsi_send_rx_filter_frame(common, 0);
338 mutex_unlock(&common->mutex);
339
340 return 0;
341 }
342
343 /**
344 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
345 * @hw: Pointer to the ieee80211_hw structure.
346 *
347 * Return: None.
348 */
349 static void rsi_mac80211_stop(struct ieee80211_hw *hw)
350 {
351 struct rsi_hw *adapter = hw->priv;
352 struct rsi_common *common = adapter->priv;
353
354 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
355 mutex_lock(&common->mutex);
356 common->iface_down = true;
357 wiphy_rfkill_stop_polling(hw->wiphy);
358
359 /* Block all rx frames */
360 rsi_send_rx_filter_frame(common, 0xffff);
361
362 mutex_unlock(&common->mutex);
363 }
364
365 static int rsi_map_intf_mode(enum nl80211_iftype vif_type)
366 {
367 switch (vif_type) {
368 case NL80211_IFTYPE_STATION:
369 return RSI_OPMODE_STA;
370 case NL80211_IFTYPE_AP:
371 return RSI_OPMODE_AP;
372 case NL80211_IFTYPE_P2P_DEVICE:
373 return RSI_OPMODE_P2P_CLIENT;
374 case NL80211_IFTYPE_P2P_CLIENT:
375 return RSI_OPMODE_P2P_CLIENT;
376 case NL80211_IFTYPE_P2P_GO:
377 return RSI_OPMODE_P2P_GO;
378 default:
379 return RSI_OPMODE_UNSUPPORTED;
380 }
381 }
382
383 /**
384 * rsi_mac80211_add_interface() - This function is called when a netdevice
385 * attached to the hardware is enabled.
386 * @hw: Pointer to the ieee80211_hw structure.
387 * @vif: Pointer to the ieee80211_vif structure.
388 *
389 * Return: ret: 0 on success, negative error code on failure.
390 */
391 static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
392 struct ieee80211_vif *vif)
393 {
394 struct rsi_hw *adapter = hw->priv;
395 struct rsi_common *common = adapter->priv;
396 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
397 enum opmode intf_mode;
398 enum vap_status vap_status;
399 int vap_idx = -1, i;
400
401 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
402 mutex_lock(&common->mutex);
403
404 intf_mode = rsi_map_intf_mode(vif->type);
405 if (intf_mode == RSI_OPMODE_UNSUPPORTED) {
406 rsi_dbg(ERR_ZONE,
407 "%s: Interface type %d not supported\n", __func__,
408 vif->type);
409 mutex_unlock(&common->mutex);
410 return -EOPNOTSUPP;
411 }
412 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) ||
413 (vif->type == NL80211_IFTYPE_P2P_CLIENT) ||
414 (vif->type == NL80211_IFTYPE_P2P_GO))
415 common->p2p_enabled = true;
416
417 /* Get free vap index */
418 for (i = 0; i < RSI_MAX_VIFS; i++) {
419 if (!adapter->vifs[i]) {
420 vap_idx = i;
421 break;
422 }
423 }
424 if (vap_idx < 0) {
425 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n");
426 mutex_unlock(&common->mutex);
427 return -EOPNOTSUPP;
428 }
429 vif_info->vap_id = vap_idx;
430 adapter->vifs[vap_idx] = vif;
431 adapter->sc_nvifs++;
432 vap_status = VAP_ADD;
433
434 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr,
435 vif_info->vap_id, vap_status)) {
436 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n");
437 mutex_unlock(&common->mutex);
438 return -EINVAL;
439 }
440
441 if ((vif->type == NL80211_IFTYPE_AP) ||
442 (vif->type == NL80211_IFTYPE_P2P_GO)) {
443 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS);
444 common->min_rate = RSI_RATE_AUTO;
445 for (i = 0; i < common->max_stations; i++)
446 common->stations[i].sta = NULL;
447 }
448
449 mutex_unlock(&common->mutex);
450
451 return 0;
452 }
453
454 /**
455 * rsi_mac80211_remove_interface() - This function notifies driver that an
456 * interface is going down.
457 * @hw: Pointer to the ieee80211_hw structure.
458 * @vif: Pointer to the ieee80211_vif structure.
459 *
460 * Return: None.
461 */
462 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
463 struct ieee80211_vif *vif)
464 {
465 struct rsi_hw *adapter = hw->priv;
466 struct rsi_common *common = adapter->priv;
467 enum opmode opmode;
468 int i;
469
470 rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
471
472 mutex_lock(&common->mutex);
473
474 if (adapter->sc_nvifs <= 0) {
475 mutex_unlock(&common->mutex);
476 return;
477 }
478
479 opmode = rsi_map_intf_mode(vif->type);
480 if (opmode == RSI_OPMODE_UNSUPPORTED) {
481 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
482 mutex_unlock(&common->mutex);
483 return;
484 }
485 for (i = 0; i < RSI_MAX_VIFS; i++) {
486 if (!adapter->vifs[i])
487 continue;
488 if (vif == adapter->vifs[i]) {
489 rsi_set_vap_capabilities(common, opmode, vif->addr,
490 i, VAP_DELETE);
491 adapter->sc_nvifs--;
492 adapter->vifs[i] = NULL;
493 }
494 }
495 mutex_unlock(&common->mutex);
496 }
497
498 /**
499 * rsi_channel_change() - This function is a performs the checks
500 * required for changing a channel and sets
501 * the channel accordingly.
502 * @hw: Pointer to the ieee80211_hw structure.
503 *
504 * Return: 0 on success, negative error code on failure.
505 */
506 static int rsi_channel_change(struct ieee80211_hw *hw)
507 {
508 struct rsi_hw *adapter = hw->priv;
509 struct rsi_common *common = adapter->priv;
510 int status = -EOPNOTSUPP;
511 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
512 u16 channel = curchan->hw_value;
513 struct ieee80211_vif *vif;
514 struct ieee80211_bss_conf *bss;
515 bool assoc = false;
516 int i;
517
518 rsi_dbg(INFO_ZONE,
519 "%s: Set channel: %d MHz type: %d channel_no %d\n",
520 __func__, curchan->center_freq,
521 curchan->flags, channel);
522
523 for (i = 0; i < RSI_MAX_VIFS; i++) {
524 vif = adapter->vifs[i];
525 if (!vif)
526 continue;
527 if (vif->type == NL80211_IFTYPE_STATION) {
528 bss = &vif->bss_conf;
529 if (bss->assoc) {
530 assoc = true;
531 break;
532 }
533 }
534 }
535 if (assoc) {
536 if (!common->hw_data_qs_blocked &&
537 (rsi_get_connected_channel(vif) != channel)) {
538 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
539 if (!rsi_send_block_unblock_frame(common, true))
540 common->hw_data_qs_blocked = true;
541 }
542 }
543
544 status = rsi_band_check(common, curchan);
545 if (!status)
546 status = rsi_set_channel(adapter->priv, curchan);
547
548 if (assoc) {
549 if (common->hw_data_qs_blocked &&
550 (rsi_get_connected_channel(vif) == channel)) {
551 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
552 if (!rsi_send_block_unblock_frame(common, false))
553 common->hw_data_qs_blocked = false;
554 }
555 }
556
557 return status;
558 }
559
560 /**
561 * rsi_config_power() - This function configures tx power to device
562 * @hw: Pointer to the ieee80211_hw structure.
563 *
564 * Return: 0 on success, negative error code on failure.
565 */
566 static int rsi_config_power(struct ieee80211_hw *hw)
567 {
568 struct rsi_hw *adapter = hw->priv;
569 struct rsi_common *common = adapter->priv;
570 struct ieee80211_conf *conf = &hw->conf;
571
572 if (adapter->sc_nvifs <= 0) {
573 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
574 return -EINVAL;
575 }
576
577 rsi_dbg(INFO_ZONE,
578 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
579
580 if (conf->power_level == common->tx_power)
581 return 0;
582
583 common->tx_power = conf->power_level;
584
585 return rsi_send_radio_params_update(common);
586 }
587
588 /**
589 * rsi_mac80211_config() - This function is a handler for configuration
590 * requests. The stack calls this function to
591 * change hardware configuration, e.g., channel.
592 * @hw: Pointer to the ieee80211_hw structure.
593 * @changed: Changed flags set.
594 *
595 * Return: 0 on success, negative error code on failure.
596 */
597 static int rsi_mac80211_config(struct ieee80211_hw *hw,
598 u32 changed)
599 {
600 struct rsi_hw *adapter = hw->priv;
601 struct rsi_common *common = adapter->priv;
602 struct ieee80211_conf *conf = &hw->conf;
603 int status = -EOPNOTSUPP;
604
605 mutex_lock(&common->mutex);
606
607 if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
608 status = rsi_channel_change(hw);
609
610 /* tx power */
611 if (changed & IEEE80211_CONF_CHANGE_POWER) {
612 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
613 status = rsi_config_power(hw);
614 }
615
616 /* Power save parameters */
617 if (changed & IEEE80211_CONF_CHANGE_PS) {
618 struct ieee80211_vif *vif, *sta_vif = NULL;
619 unsigned long flags;
620 int i, set_ps = 1;
621
622 for (i = 0; i < RSI_MAX_VIFS; i++) {
623 vif = adapter->vifs[i];
624 if (!vif)
625 continue;
626 /* Don't go to power save if AP vap exists */
627 if ((vif->type == NL80211_IFTYPE_AP) ||
628 (vif->type == NL80211_IFTYPE_P2P_GO)) {
629 set_ps = 0;
630 break;
631 }
632 if ((vif->type == NL80211_IFTYPE_STATION ||
633 vif->type == NL80211_IFTYPE_P2P_CLIENT) &&
634 (!sta_vif || vif->bss_conf.assoc))
635 sta_vif = vif;
636 }
637 if (set_ps && sta_vif) {
638 spin_lock_irqsave(&adapter->ps_lock, flags);
639 if (conf->flags & IEEE80211_CONF_PS)
640 rsi_enable_ps(adapter, sta_vif);
641 else
642 rsi_disable_ps(adapter, sta_vif);
643 spin_unlock_irqrestore(&adapter->ps_lock, flags);
644 }
645 }
646
647 /* RTS threshold */
648 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
649 rsi_dbg(INFO_ZONE, "RTS threshold\n");
650 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
651 rsi_dbg(INFO_ZONE,
652 "%s: Sending vap updates....\n", __func__);
653 status = rsi_send_vap_dynamic_update(common);
654 }
655 }
656 mutex_unlock(&common->mutex);
657
658 return status;
659 }
660
661 /**
662 * rsi_get_connected_channel() - This function is used to get the current
663 * connected channel number.
664 * @adapter: Pointer to the adapter structure.
665 *
666 * Return: Current connected AP's channel number is returned.
667 */
668 u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
669 {
670 struct ieee80211_bss_conf *bss;
671 struct ieee80211_channel *channel;
672
673 if (!vif)
674 return 0;
675
676 bss = &vif->bss_conf;
677 channel = bss->chandef.chan;
678
679 if (!channel)
680 return 0;
681
682 return channel->hw_value;
683 }
684
685 static void rsi_switch_channel(struct rsi_hw *adapter,
686 struct ieee80211_vif *vif)
687 {
688 struct rsi_common *common = adapter->priv;
689 struct ieee80211_channel *channel;
690
691 if (common->iface_down)
692 return;
693 if (!vif)
694 return;
695
696 channel = vif->bss_conf.chandef.chan;
697
698 if (!channel)
699 return;
700
701 rsi_band_check(common, channel);
702 rsi_set_channel(common, channel);
703 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
704 }
705
706 /**
707 * rsi_mac80211_bss_info_changed() - This function is a handler for config
708 * requests related to BSS parameters that
709 * may vary during BSS's lifespan.
710 * @hw: Pointer to the ieee80211_hw structure.
711 * @vif: Pointer to the ieee80211_vif structure.
712 * @bss_conf: Pointer to the ieee80211_bss_conf structure.
713 * @changed: Changed flags set.
714 *
715 * Return: None.
716 */
717 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
718 struct ieee80211_vif *vif,
719 struct ieee80211_bss_conf *bss_conf,
720 u32 changed)
721 {
722 struct rsi_hw *adapter = hw->priv;
723 struct rsi_common *common = adapter->priv;
724 struct ieee80211_bss_conf *bss = &vif->bss_conf;
725 struct ieee80211_conf *conf = &hw->conf;
726 u16 rx_filter_word = 0;
727
728 mutex_lock(&common->mutex);
729 if (changed & BSS_CHANGED_ASSOC) {
730 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
731 __func__, bss_conf->assoc);
732 if (bss_conf->assoc) {
733 /* Send the RX filter frame */
734 rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
735 ALLOW_CTRL_ASSOC_PEER |
736 ALLOW_MGMT_ASSOC_PEER);
737 rsi_send_rx_filter_frame(common, rx_filter_word);
738 }
739 rsi_inform_bss_status(common,
740 RSI_OPMODE_STA,
741 bss_conf->assoc,
742 bss_conf->bssid,
743 bss_conf->qos,
744 bss_conf->aid,
745 NULL, 0,
746 bss_conf->assoc_capability, vif);
747 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
748 adapter->ps_info.listen_interval = conf->listen_interval;
749
750 /* If U-APSD is updated, send ps parameters to firmware */
751 if (bss->assoc) {
752 if (common->uapsd_bitmap) {
753 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
754 rsi_conf_uapsd(adapter, vif);
755 }
756 } else {
757 common->uapsd_bitmap = 0;
758 }
759 }
760
761 if (changed & BSS_CHANGED_CQM) {
762 common->cqm_info.last_cqm_event_rssi = 0;
763 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
764 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
765 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n",
766 common->cqm_info.rssi_thold,
767 common->cqm_info.rssi_hyst);
768 }
769
770 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
771 ((vif->type == NL80211_IFTYPE_AP) ||
772 (vif->type == NL80211_IFTYPE_P2P_GO))) {
773 if (bss->enable_beacon) {
774 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
775 common->beacon_enabled = 1;
776 } else {
777 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
778 common->beacon_enabled = 0;
779 }
780 }
781
782 mutex_unlock(&common->mutex);
783 }
784
785 /**
786 * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
787 * @hw: Pointer to the ieee80211_hw structure.
788 * @changed: Changed flags set.
789 * @total_flags: Total initial flags set.
790 * @multicast: Multicast.
791 *
792 * Return: None.
793 */
794 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
795 u32 changed_flags,
796 u32 *total_flags,
797 u64 multicast)
798 {
799 /* Not doing much here as of now */
800 *total_flags &= RSI_SUPP_FILTERS;
801 }
802
803 /**
804 * rsi_mac80211_conf_tx() - This function configures TX queue parameters
805 * (EDCF (aifs, cw_min, cw_max), bursting)
806 * for a hardware TX queue.
807 * @hw: Pointer to the ieee80211_hw structure
808 * @vif: Pointer to the ieee80211_vif structure.
809 * @queue: Queue number.
810 * @params: Pointer to ieee80211_tx_queue_params structure.
811 *
812 * Return: 0 on success, negative error code on failure.
813 */
814 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
815 struct ieee80211_vif *vif, u16 queue,
816 const struct ieee80211_tx_queue_params *params)
817 {
818 struct rsi_hw *adapter = hw->priv;
819 struct rsi_common *common = adapter->priv;
820 u8 idx = 0;
821
822 if (queue >= IEEE80211_NUM_ACS)
823 return 0;
824
825 rsi_dbg(INFO_ZONE,
826 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
827 __func__, queue, params->aifs,
828 params->cw_min, params->cw_max, params->txop);
829
830 mutex_lock(&common->mutex);
831 /* Map into the way the f/w expects */
832 switch (queue) {
833 case IEEE80211_AC_VO:
834 idx = VO_Q;
835 break;
836 case IEEE80211_AC_VI:
837 idx = VI_Q;
838 break;
839 case IEEE80211_AC_BE:
840 idx = BE_Q;
841 break;
842 case IEEE80211_AC_BK:
843 idx = BK_Q;
844 break;
845 default:
846 idx = BE_Q;
847 break;
848 }
849
850 memcpy(&common->edca_params[idx],
851 params,
852 sizeof(struct ieee80211_tx_queue_params));
853
854 if (params->uapsd)
855 common->uapsd_bitmap |= idx;
856 else
857 common->uapsd_bitmap &= (~idx);
858
859 mutex_unlock(&common->mutex);
860
861 return 0;
862 }
863
864 /**
865 * rsi_hal_key_config() - This function loads the keys into the firmware.
866 * @hw: Pointer to the ieee80211_hw structure.
867 * @vif: Pointer to the ieee80211_vif structure.
868 * @key: Pointer to the ieee80211_key_conf structure.
869 *
870 * Return: status: 0 on success, negative error codes on failure.
871 */
872 static int rsi_hal_key_config(struct ieee80211_hw *hw,
873 struct ieee80211_vif *vif,
874 struct ieee80211_key_conf *key,
875 struct ieee80211_sta *sta)
876 {
877 struct rsi_hw *adapter = hw->priv;
878 struct rsi_sta *rsta = NULL;
879 int status;
880 u8 key_type;
881 s16 sta_id = 0;
882
883 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
884 key_type = RSI_PAIRWISE_KEY;
885 else
886 key_type = RSI_GROUP_KEY;
887
888 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
889 __func__, key->cipher, key_type, key->keylen);
890
891 if ((vif->type == NL80211_IFTYPE_AP) ||
892 (vif->type == NL80211_IFTYPE_P2P_GO)) {
893 if (sta) {
894 rsta = rsi_find_sta(adapter->priv, sta->addr);
895 if (rsta)
896 sta_id = rsta->sta_id;
897 }
898 adapter->priv->key = key;
899 } else {
900 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
901 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
902 status = rsi_hal_load_key(adapter->priv,
903 key->key,
904 key->keylen,
905 RSI_PAIRWISE_KEY,
906 key->keyidx,
907 key->cipher,
908 sta_id,
909 vif);
910 if (status)
911 return status;
912 }
913 }
914
915 status = rsi_hal_load_key(adapter->priv,
916 key->key,
917 key->keylen,
918 key_type,
919 key->keyidx,
920 key->cipher,
921 sta_id,
922 vif);
923 if (status)
924 return status;
925
926 if (vif->type == NL80211_IFTYPE_STATION && key->key &&
927 (key->cipher == WLAN_CIPHER_SUITE_WEP104 ||
928 key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
929 if (!rsi_send_block_unblock_frame(adapter->priv, false))
930 adapter->priv->hw_data_qs_blocked = false;
931 }
932
933 return 0;
934 }
935
936 /**
937 * rsi_mac80211_set_key() - This function sets type of key to be loaded.
938 * @hw: Pointer to the ieee80211_hw structure.
939 * @cmd: enum set_key_cmd.
940 * @vif: Pointer to the ieee80211_vif structure.
941 * @sta: Pointer to the ieee80211_sta structure.
942 * @key: Pointer to the ieee80211_key_conf structure.
943 *
944 * Return: status: 0 on success, negative error code on failure.
945 */
946 static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
947 enum set_key_cmd cmd,
948 struct ieee80211_vif *vif,
949 struct ieee80211_sta *sta,
950 struct ieee80211_key_conf *key)
951 {
952 struct rsi_hw *adapter = hw->priv;
953 struct rsi_common *common = adapter->priv;
954 struct security_info *secinfo = &common->secinfo;
955 int status;
956
957 mutex_lock(&common->mutex);
958 switch (cmd) {
959 case SET_KEY:
960 secinfo->security_enable = true;
961 status = rsi_hal_key_config(hw, vif, key, sta);
962 if (status) {
963 mutex_unlock(&common->mutex);
964 return status;
965 }
966
967 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
968 secinfo->ptk_cipher = key->cipher;
969 else
970 secinfo->gtk_cipher = key->cipher;
971
972 key->hw_key_idx = key->keyidx;
973 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
974
975 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
976 break;
977
978 case DISABLE_KEY:
979 if (vif->type == NL80211_IFTYPE_STATION)
980 secinfo->security_enable = false;
981 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
982 memset(key, 0, sizeof(struct ieee80211_key_conf));
983 status = rsi_hal_key_config(hw, vif, key, sta);
984 break;
985
986 default:
987 status = -EOPNOTSUPP;
988 break;
989 }
990
991 mutex_unlock(&common->mutex);
992 return status;
993 }
994
995 /**
996 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
997 * the corresponding mlme_action flag and
998 * informs the f/w regarding this.
999 * @hw: Pointer to the ieee80211_hw structure.
1000 * @vif: Pointer to the ieee80211_vif structure.
1001 * @params: Pointer to A-MPDU action parameters
1002 *
1003 * Return: status: 0 on success, negative error code on failure.
1004 */
1005 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
1006 struct ieee80211_vif *vif,
1007 struct ieee80211_ampdu_params *params)
1008 {
1009 int status = -EOPNOTSUPP;
1010 struct rsi_hw *adapter = hw->priv;
1011 struct rsi_common *common = adapter->priv;
1012 struct rsi_sta *rsta = NULL;
1013 u16 seq_no = 0, seq_start = 0;
1014 u8 ii = 0;
1015 struct ieee80211_sta *sta = params->sta;
1016 u8 sta_id = 0;
1017 enum ieee80211_ampdu_mlme_action action = params->action;
1018 u16 tid = params->tid;
1019 u16 *ssn = &params->ssn;
1020 u8 buf_size = params->buf_size;
1021
1022 for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1023 if (vif == adapter->vifs[ii])
1024 break;
1025 }
1026
1027 mutex_lock(&common->mutex);
1028
1029 if (ssn != NULL)
1030 seq_no = *ssn;
1031
1032 if ((vif->type == NL80211_IFTYPE_AP) ||
1033 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1034 rsta = rsi_find_sta(common, sta->addr);
1035 if (!rsta) {
1036 rsi_dbg(ERR_ZONE, "No station mapped\n");
1037 status = 0;
1038 goto unlock;
1039 }
1040 sta_id = rsta->sta_id;
1041 }
1042
1043 rsi_dbg(INFO_ZONE,
1044 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1045 __func__, tid, seq_no, buf_size, sta_id);
1046
1047 switch (action) {
1048 case IEEE80211_AMPDU_RX_START:
1049 status = rsi_send_aggregation_params_frame(common,
1050 tid,
1051 seq_no,
1052 buf_size,
1053 STA_RX_ADDBA_DONE,
1054 sta_id);
1055 break;
1056
1057 case IEEE80211_AMPDU_RX_STOP:
1058 status = rsi_send_aggregation_params_frame(common,
1059 tid,
1060 0,
1061 buf_size,
1062 STA_RX_DELBA,
1063 sta_id);
1064 break;
1065
1066 case IEEE80211_AMPDU_TX_START:
1067 if ((vif->type == NL80211_IFTYPE_STATION) ||
1068 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1069 common->vif_info[ii].seq_start = seq_no;
1070 else if ((vif->type == NL80211_IFTYPE_AP) ||
1071 (vif->type == NL80211_IFTYPE_P2P_GO))
1072 rsta->seq_start[tid] = seq_no;
1073 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1074 status = 0;
1075 break;
1076
1077 case IEEE80211_AMPDU_TX_STOP_CONT:
1078 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1079 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1080 status = rsi_send_aggregation_params_frame(common,
1081 tid,
1082 seq_no,
1083 buf_size,
1084 STA_TX_DELBA,
1085 sta_id);
1086 if (!status)
1087 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1088 break;
1089
1090 case IEEE80211_AMPDU_TX_OPERATIONAL:
1091 if ((vif->type == NL80211_IFTYPE_STATION) ||
1092 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1093 seq_start = common->vif_info[ii].seq_start;
1094 else if ((vif->type == NL80211_IFTYPE_AP) ||
1095 (vif->type == NL80211_IFTYPE_P2P_GO))
1096 seq_start = rsta->seq_start[tid];
1097 status = rsi_send_aggregation_params_frame(common,
1098 tid,
1099 seq_start,
1100 buf_size,
1101 STA_TX_ADDBA_DONE,
1102 sta_id);
1103 break;
1104
1105 default:
1106 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__);
1107 break;
1108 }
1109
1110 unlock:
1111 mutex_unlock(&common->mutex);
1112 return status;
1113 }
1114
1115 /**
1116 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1117 * @hw: Pointer to the ieee80211_hw structure.
1118 * @value: Rts threshold value.
1119 *
1120 * Return: 0 on success.
1121 */
1122 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1123 u32 value)
1124 {
1125 struct rsi_hw *adapter = hw->priv;
1126 struct rsi_common *common = adapter->priv;
1127
1128 mutex_lock(&common->mutex);
1129 common->rts_threshold = value;
1130 mutex_unlock(&common->mutex);
1131
1132 return 0;
1133 }
1134
1135 /**
1136 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1137 * @hw: Pointer to the ieee80211_hw structure
1138 * @vif: Pointer to the ieee80211_vif structure.
1139 * @mask: Pointer to the cfg80211_bitrate_mask structure.
1140 *
1141 * Return: 0 on success.
1142 */
1143 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1144 struct ieee80211_vif *vif,
1145 const struct cfg80211_bitrate_mask *mask)
1146 {
1147 struct rsi_hw *adapter = hw->priv;
1148 struct rsi_common *common = adapter->priv;
1149 enum nl80211_band band = hw->conf.chandef.chan->band;
1150
1151 mutex_lock(&common->mutex);
1152 common->fixedrate_mask[band] = 0;
1153
1154 if (mask->control[band].legacy == 0xfff) {
1155 common->fixedrate_mask[band] =
1156 (mask->control[band].ht_mcs[0] << 12);
1157 } else {
1158 common->fixedrate_mask[band] =
1159 mask->control[band].legacy;
1160 }
1161 mutex_unlock(&common->mutex);
1162
1163 return 0;
1164 }
1165
1166 /**
1167 * rsi_perform_cqm() - This function performs cqm.
1168 * @common: Pointer to the driver private structure.
1169 * @bssid: pointer to the bssid.
1170 * @rssi: RSSI value.
1171 */
1172 static void rsi_perform_cqm(struct rsi_common *common,
1173 u8 *bssid,
1174 s8 rssi,
1175 struct ieee80211_vif *vif)
1176 {
1177 s8 last_event = common->cqm_info.last_cqm_event_rssi;
1178 int thold = common->cqm_info.rssi_thold;
1179 u32 hyst = common->cqm_info.rssi_hyst;
1180 enum nl80211_cqm_rssi_threshold_event event;
1181
1182 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1183 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1184 else if (rssi > thold &&
1185 (last_event == 0 || rssi > (last_event + hyst)))
1186 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1187 else
1188 return;
1189
1190 common->cqm_info.last_cqm_event_rssi = rssi;
1191 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1192 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1193
1194 return;
1195 }
1196
1197 /**
1198 * rsi_fill_rx_status() - This function fills rx status in
1199 * ieee80211_rx_status structure.
1200 * @hw: Pointer to the ieee80211_hw structure.
1201 * @skb: Pointer to the socket buffer structure.
1202 * @common: Pointer to the driver private structure.
1203 * @rxs: Pointer to the ieee80211_rx_status structure.
1204 *
1205 * Return: None.
1206 */
1207 static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1208 struct sk_buff *skb,
1209 struct rsi_common *common,
1210 struct ieee80211_rx_status *rxs)
1211 {
1212 struct rsi_hw *adapter = common->priv;
1213 struct ieee80211_vif *vif;
1214 struct ieee80211_bss_conf *bss = NULL;
1215 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1216 struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1217 struct ieee80211_hdr *hdr;
1218 char rssi = rx_params->rssi;
1219 u8 hdrlen = 0;
1220 u8 channel = rx_params->channel;
1221 s32 freq;
1222 int i;
1223
1224 hdr = ((struct ieee80211_hdr *)(skb->data));
1225 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1226
1227 memset(info, 0, sizeof(struct ieee80211_tx_info));
1228
1229 rxs->signal = -(rssi);
1230
1231 rxs->band = common->band;
1232
1233 freq = ieee80211_channel_to_frequency(channel, rxs->band);
1234
1235 if (freq)
1236 rxs->freq = freq;
1237
1238 if (ieee80211_has_protected(hdr->frame_control)) {
1239 if (rsi_is_cipher_wep(common)) {
1240 memmove(skb->data + 4, skb->data, hdrlen);
1241 skb_pull(skb, 4);
1242 } else {
1243 memmove(skb->data + 8, skb->data, hdrlen);
1244 skb_pull(skb, 8);
1245 rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1246 }
1247 rxs->flag |= RX_FLAG_DECRYPTED;
1248 rxs->flag |= RX_FLAG_IV_STRIPPED;
1249 }
1250
1251 for (i = 0; i < RSI_MAX_VIFS; i++) {
1252 vif = adapter->vifs[i];
1253 if (!vif)
1254 continue;
1255 if (vif->type == NL80211_IFTYPE_STATION) {
1256 bss = &vif->bss_conf;
1257 break;
1258 }
1259 }
1260 if (!bss)
1261 return;
1262 /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1263 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1264 if (ieee80211_is_beacon(hdr->frame_control))
1265 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1266 }
1267
1268 return;
1269 }
1270
1271 /**
1272 * rsi_indicate_pkt_to_os() - This function sends recieved packet to mac80211.
1273 * @common: Pointer to the driver private structure.
1274 * @skb: Pointer to the socket buffer structure.
1275 *
1276 * Return: None.
1277 */
1278 void rsi_indicate_pkt_to_os(struct rsi_common *common,
1279 struct sk_buff *skb)
1280 {
1281 struct rsi_hw *adapter = common->priv;
1282 struct ieee80211_hw *hw = adapter->hw;
1283 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1284
1285 if ((common->iface_down) || (!adapter->sc_nvifs)) {
1286 dev_kfree_skb(skb);
1287 return;
1288 }
1289
1290 /* filling in the ieee80211_rx_status flags */
1291 rsi_fill_rx_status(hw, skb, common, rx_status);
1292
1293 ieee80211_rx_irqsafe(hw, skb);
1294 }
1295
1296 static void rsi_set_min_rate(struct ieee80211_hw *hw,
1297 struct ieee80211_sta *sta,
1298 struct rsi_common *common)
1299 {
1300 u8 band = hw->conf.chandef.chan->band;
1301 u8 ii;
1302 u32 rate_bitmap;
1303 bool matched = false;
1304
1305 common->bitrate_mask[band] = sta->supp_rates[band];
1306
1307 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]);
1308
1309 if (rate_bitmap & 0xfff) {
1310 /* Find out the min rate */
1311 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) {
1312 if (rate_bitmap & BIT(ii)) {
1313 common->min_rate = rsi_rates[ii].hw_value;
1314 matched = true;
1315 break;
1316 }
1317 }
1318 }
1319
1320 common->vif_info[0].is_ht = sta->ht_cap.ht_supported;
1321
1322 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) {
1323 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) {
1324 if ((rate_bitmap >> 12) & BIT(ii)) {
1325 common->min_rate = rsi_mcsrates[ii];
1326 matched = true;
1327 break;
1328 }
1329 }
1330 }
1331
1332 if (!matched)
1333 common->min_rate = 0xffff;
1334 }
1335
1336 /**
1337 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1338 * connected.
1339 * @hw: pointer to the ieee80211_hw structure.
1340 * @vif: Pointer to the ieee80211_vif structure.
1341 * @sta: Pointer to the ieee80211_sta structure.
1342 *
1343 * Return: 0 on success, negative error codes on failure.
1344 */
1345 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1346 struct ieee80211_vif *vif,
1347 struct ieee80211_sta *sta)
1348 {
1349 struct rsi_hw *adapter = hw->priv;
1350 struct rsi_common *common = adapter->priv;
1351 bool sta_exist = false;
1352 struct rsi_sta *rsta;
1353 int status = 0;
1354
1355 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1356
1357 mutex_lock(&common->mutex);
1358
1359 if ((vif->type == NL80211_IFTYPE_AP) ||
1360 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1361 u8 cnt;
1362 int sta_idx = -1;
1363 int free_index = -1;
1364
1365 /* Check if max stations reached */
1366 if (common->num_stations >= common->max_stations) {
1367 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1368 status = -EOPNOTSUPP;
1369 goto unlock;
1370 }
1371 for (cnt = 0; cnt < common->max_stations; cnt++) {
1372 rsta = &common->stations[cnt];
1373
1374 if (!rsta->sta) {
1375 if (free_index < 0)
1376 free_index = cnt;
1377 continue;
1378 }
1379 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1380 rsi_dbg(INFO_ZONE, "Station exists\n");
1381 sta_idx = cnt;
1382 sta_exist = true;
1383 break;
1384 }
1385 }
1386 if (!sta_exist) {
1387 if (free_index >= 0)
1388 sta_idx = free_index;
1389 }
1390 if (sta_idx < 0) {
1391 rsi_dbg(ERR_ZONE,
1392 "%s: Some problem reaching here...\n",
1393 __func__);
1394 status = -EINVAL;
1395 goto unlock;
1396 }
1397 rsta = &common->stations[sta_idx];
1398 rsta->sta = sta;
1399 rsta->sta_id = sta_idx;
1400 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1401 rsta->start_tx_aggr[cnt] = false;
1402 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1403 rsta->seq_start[cnt] = 0;
1404 if (!sta_exist) {
1405 rsi_dbg(INFO_ZONE, "New Station\n");
1406
1407 /* Send peer notify to device */
1408 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1409 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1410 sta->addr, sta->wme, sta->aid,
1411 sta, sta_idx, 0, vif);
1412
1413 if (common->key) {
1414 struct ieee80211_key_conf *key = common->key;
1415
1416 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1417 (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1418 rsi_hal_load_key(adapter->priv,
1419 key->key,
1420 key->keylen,
1421 RSI_PAIRWISE_KEY,
1422 key->keyidx,
1423 key->cipher,
1424 sta_idx,
1425 vif);
1426 }
1427
1428 common->num_stations++;
1429 }
1430 }
1431
1432 if ((vif->type == NL80211_IFTYPE_STATION) ||
1433 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1434 rsi_set_min_rate(hw, sta, common);
1435 if (sta->ht_cap.ht_supported) {
1436 common->vif_info[0].is_ht = true;
1437 common->bitrate_mask[NL80211_BAND_2GHZ] =
1438 sta->supp_rates[NL80211_BAND_2GHZ];
1439 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1440 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1441 common->vif_info[0].sgi = true;
1442 ieee80211_start_tx_ba_session(sta, 0, 0);
1443 }
1444 }
1445
1446 unlock:
1447 mutex_unlock(&common->mutex);
1448
1449 return status;
1450 }
1451
1452 /**
1453 * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1454 * getting disconnected.
1455 * @hw: Pointer to the ieee80211_hw structure.
1456 * @vif: Pointer to the ieee80211_vif structure.
1457 * @sta: Pointer to the ieee80211_sta structure.
1458 *
1459 * Return: 0 on success, negative error codes on failure.
1460 */
1461 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1462 struct ieee80211_vif *vif,
1463 struct ieee80211_sta *sta)
1464 {
1465 struct rsi_hw *adapter = hw->priv;
1466 struct rsi_common *common = adapter->priv;
1467 struct ieee80211_bss_conf *bss = &vif->bss_conf;
1468 struct rsi_sta *rsta;
1469
1470 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1471
1472 mutex_lock(&common->mutex);
1473
1474 if ((vif->type == NL80211_IFTYPE_AP) ||
1475 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1476 u8 sta_idx, cnt;
1477
1478 /* Send peer notify to device */
1479 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1480 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1481 rsta = &common->stations[sta_idx];
1482
1483 if (!rsta->sta)
1484 continue;
1485 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1486 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1487 sta->addr, sta->wme,
1488 sta->aid, sta, sta_idx,
1489 0, vif);
1490 rsta->sta = NULL;
1491 rsta->sta_id = -1;
1492 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1493 rsta->start_tx_aggr[cnt] = false;
1494 if (common->num_stations > 0)
1495 common->num_stations--;
1496 break;
1497 }
1498 }
1499 if (sta_idx >= common->max_stations)
1500 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1501 }
1502
1503 if ((vif->type == NL80211_IFTYPE_STATION) ||
1504 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1505 /* Resetting all the fields to default values */
1506 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1507 bss->qos = sta->wme;
1508 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1509 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1510 common->min_rate = 0xffff;
1511 common->vif_info[0].is_ht = false;
1512 common->vif_info[0].sgi = false;
1513 common->vif_info[0].seq_start = 0;
1514 common->secinfo.ptk_cipher = 0;
1515 common->secinfo.gtk_cipher = 0;
1516 if (!common->iface_down)
1517 rsi_send_rx_filter_frame(common, 0);
1518 }
1519 mutex_unlock(&common->mutex);
1520
1521 return 0;
1522 }
1523
1524 /**
1525 * rsi_mac80211_set_antenna() - This function is used to configure
1526 * tx and rx antennas.
1527 * @hw: Pointer to the ieee80211_hw structure.
1528 * @tx_ant: Bitmap for tx antenna
1529 * @rx_ant: Bitmap for rx antenna
1530 *
1531 * Return: 0 on success, Negative error code on failure.
1532 */
1533 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1534 u32 tx_ant, u32 rx_ant)
1535 {
1536 struct rsi_hw *adapter = hw->priv;
1537 struct rsi_common *common = adapter->priv;
1538 u8 antenna = 0;
1539
1540 if (tx_ant > 1 || rx_ant > 1) {
1541 rsi_dbg(ERR_ZONE,
1542 "Invalid antenna selection (tx: %d, rx:%d)\n",
1543 tx_ant, rx_ant);
1544 rsi_dbg(ERR_ZONE,
1545 "Use 0 for int_ant, 1 for ext_ant\n");
1546 return -EINVAL;
1547 }
1548
1549 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1550 __func__, tx_ant, rx_ant);
1551
1552 mutex_lock(&common->mutex);
1553
1554 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1555 if (common->ant_in_use != antenna)
1556 if (rsi_set_antenna(common, antenna))
1557 goto fail_set_antenna;
1558
1559 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1560 tx_ant ? "UFL" : "INT");
1561
1562 common->ant_in_use = antenna;
1563
1564 mutex_unlock(&common->mutex);
1565
1566 return 0;
1567
1568 fail_set_antenna:
1569 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1570 mutex_unlock(&common->mutex);
1571 return -EINVAL;
1572 }
1573
1574 /**
1575 * rsi_mac80211_get_antenna() - This function is used to configure
1576 * tx and rx antennas.
1577 *
1578 * @hw: Pointer to the ieee80211_hw structure.
1579 * @tx_ant: Bitmap for tx antenna
1580 * @rx_ant: Bitmap for rx antenna
1581 *
1582 * Return: 0 on success, negative error codes on failure.
1583 */
1584 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1585 u32 *tx_ant, u32 *rx_ant)
1586 {
1587 struct rsi_hw *adapter = hw->priv;
1588 struct rsi_common *common = adapter->priv;
1589
1590 mutex_lock(&common->mutex);
1591
1592 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1593 *rx_ant = 0;
1594
1595 mutex_unlock(&common->mutex);
1596
1597 return 0;
1598 }
1599
1600 static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1601 {
1602 switch (region_code) {
1603 case NL80211_DFS_FCC:
1604 return RSI_REGION_FCC;
1605 case NL80211_DFS_ETSI:
1606 return RSI_REGION_ETSI;
1607 case NL80211_DFS_JP:
1608 return RSI_REGION_TELEC;
1609 case NL80211_DFS_UNSET:
1610 return RSI_REGION_WORLD;
1611 }
1612 return RSI_REGION_WORLD;
1613 }
1614
1615 static void rsi_reg_notify(struct wiphy *wiphy,
1616 struct regulatory_request *request)
1617 {
1618 struct ieee80211_supported_band *sband;
1619 struct ieee80211_channel *ch;
1620 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1621 struct rsi_hw * adapter = hw->priv;
1622 struct rsi_common *common = adapter->priv;
1623 int i;
1624
1625 mutex_lock(&common->mutex);
1626
1627 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1628 request->alpha2, request->dfs_region);
1629
1630 if (common->num_supp_bands > 1) {
1631 sband = wiphy->bands[NL80211_BAND_5GHZ];
1632
1633 for (i = 0; i < sband->n_channels; i++) {
1634 ch = &sband->channels[i];
1635 if (ch->flags & IEEE80211_CHAN_DISABLED)
1636 continue;
1637
1638 if (ch->flags & IEEE80211_CHAN_RADAR)
1639 ch->flags |= IEEE80211_CHAN_NO_IR;
1640 }
1641 }
1642 adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1643 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1644
1645 adapter->country[0] = request->alpha2[0];
1646 adapter->country[1] = request->alpha2[1];
1647
1648 mutex_unlock(&common->mutex);
1649 }
1650
1651 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1652 {
1653 struct rsi_hw *adapter = hw->priv;
1654 struct rsi_common *common = adapter->priv;
1655
1656 mutex_lock(&common->mutex);
1657 if (common->fsm_state != FSM_MAC_INIT_DONE)
1658 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1659 else
1660 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1661 mutex_unlock(&common->mutex);
1662 }
1663
1664 static void rsi_resume_conn_channel(struct rsi_common *common)
1665 {
1666 struct rsi_hw *adapter = common->priv;
1667 struct ieee80211_vif *vif;
1668 int cnt;
1669
1670 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1671 vif = adapter->vifs[cnt];
1672 if (!vif)
1673 continue;
1674
1675 if ((vif->type == NL80211_IFTYPE_AP) ||
1676 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1677 rsi_switch_channel(adapter, vif);
1678 break;
1679 }
1680 if (((vif->type == NL80211_IFTYPE_STATION) ||
1681 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1682 vif->bss_conf.assoc) {
1683 rsi_switch_channel(adapter, vif);
1684 break;
1685 }
1686 }
1687 }
1688
1689 void rsi_roc_timeout(struct timer_list *t)
1690 {
1691 struct rsi_common *common = from_timer(common, t, roc_timer);
1692
1693 rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1694
1695 mutex_lock(&common->mutex);
1696 ieee80211_remain_on_channel_expired(common->priv->hw);
1697
1698 if (timer_pending(&common->roc_timer))
1699 del_timer(&common->roc_timer);
1700
1701 rsi_resume_conn_channel(common);
1702 mutex_unlock(&common->mutex);
1703 }
1704
1705 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1706 struct ieee80211_channel *chan, int duration,
1707 enum ieee80211_roc_type type)
1708 {
1709 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv;
1710 struct rsi_common *common = (struct rsi_common *)adapter->priv;
1711 int status = 0;
1712
1713 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1714
1715 mutex_lock(&common->mutex);
1716 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1717 __func__, chan->hw_value, duration);
1718
1719 if (timer_pending(&common->roc_timer)) {
1720 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1721 del_timer(&common->roc_timer);
1722 }
1723 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1724 add_timer(&common->roc_timer);
1725
1726 /* Configure band */
1727 if (rsi_band_check(common, chan)) {
1728 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1729 status = -EINVAL;
1730 goto out;
1731 }
1732
1733 /* Configure channel */
1734 if (rsi_set_channel(common, chan)) {
1735 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1736 status = -EINVAL;
1737 goto out;
1738 }
1739
1740 common->roc_vif = vif;
1741 ieee80211_ready_on_channel(hw);
1742 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1743 __func__, chan->hw_value);
1744
1745 out:
1746 mutex_unlock(&common->mutex);
1747
1748 return status;
1749 }
1750
1751 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw)
1752 {
1753 struct rsi_hw *adapter = hw->priv;
1754 struct rsi_common *common = adapter->priv;
1755
1756 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1757
1758 mutex_lock(&common->mutex);
1759 if (!timer_pending(&common->roc_timer)) {
1760 mutex_unlock(&common->mutex);
1761 return 0;
1762 }
1763
1764 del_timer(&common->roc_timer);
1765
1766 rsi_resume_conn_channel(common);
1767 mutex_unlock(&common->mutex);
1768
1769 return 0;
1770 }
1771
1772 #ifdef CONFIG_PM
1773 static const struct wiphy_wowlan_support rsi_wowlan_support = {
1774 .flags = WIPHY_WOWLAN_ANY |
1775 WIPHY_WOWLAN_MAGIC_PKT |
1776 WIPHY_WOWLAN_DISCONNECT |
1777 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
1778 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1779 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1780 WIPHY_WOWLAN_4WAY_HANDSHAKE,
1781 };
1782
1783 static u16 rsi_wow_map_triggers(struct rsi_common *common,
1784 struct cfg80211_wowlan *wowlan)
1785 {
1786 u16 wow_triggers = 0;
1787
1788 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1789
1790 if (wowlan->any)
1791 wow_triggers |= RSI_WOW_ANY;
1792 if (wowlan->magic_pkt)
1793 wow_triggers |= RSI_WOW_MAGIC_PKT;
1794 if (wowlan->disconnect)
1795 wow_triggers |= RSI_WOW_DISCONNECT;
1796 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1797 wowlan->four_way_handshake)
1798 wow_triggers |= RSI_WOW_GTK_REKEY;
1799
1800 return wow_triggers;
1801 }
1802
1803 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1804 {
1805 struct rsi_common *common = adapter->priv;
1806 u16 triggers = 0;
1807 u16 rx_filter_word = 0;
1808 struct ieee80211_bss_conf *bss = NULL;
1809
1810 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1811
1812 if (!adapter->vifs[0])
1813 return -EINVAL;
1814
1815 bss = &adapter->vifs[0]->bss_conf;
1816
1817 if (WARN_ON(!wowlan)) {
1818 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1819 return -EINVAL;
1820 }
1821
1822 common->wow_flags |= RSI_WOW_ENABLED;
1823 triggers = rsi_wow_map_triggers(common, wowlan);
1824 if (!triggers) {
1825 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1826 return -EINVAL;
1827 }
1828 if (!bss->assoc) {
1829 rsi_dbg(ERR_ZONE,
1830 "Cannot configure WoWLAN (Station not connected)\n");
1831 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1832 return 0;
1833 }
1834 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1835 rsi_send_wowlan_request(common, triggers, 1);
1836
1837 /**
1838 * Increase the beacon_miss threshold & keep-alive timers in
1839 * vap_update frame
1840 */
1841 rsi_send_vap_dynamic_update(common);
1842
1843 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1844 rsi_send_rx_filter_frame(common, rx_filter_word);
1845
1846 return 0;
1847 }
1848 EXPORT_SYMBOL(rsi_config_wowlan);
1849
1850 static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1851 struct cfg80211_wowlan *wowlan)
1852 {
1853 struct rsi_hw *adapter = hw->priv;
1854 struct rsi_common *common = adapter->priv;
1855
1856 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1857 mutex_lock(&common->mutex);
1858 if (rsi_config_wowlan(adapter, wowlan)) {
1859 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1860 mutex_unlock(&common->mutex);
1861 return 1;
1862 }
1863 mutex_unlock(&common->mutex);
1864
1865 return 0;
1866 }
1867
1868 static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1869 {
1870 u16 rx_filter_word = 0;
1871 struct rsi_hw *adapter = hw->priv;
1872 struct rsi_common *common = adapter->priv;
1873
1874 common->wow_flags = 0;
1875
1876 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1877
1878 if (common->hibernate_resume)
1879 return 0;
1880
1881 mutex_lock(&common->mutex);
1882 rsi_send_wowlan_request(common, 0, 0);
1883
1884 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1885 ALLOW_MGMT_ASSOC_PEER);
1886 rsi_send_rx_filter_frame(common, rx_filter_word);
1887 mutex_unlock(&common->mutex);
1888
1889 return 0;
1890 }
1891
1892 #endif
1893
1894 static const struct ieee80211_ops mac80211_ops = {
1895 .tx = rsi_mac80211_tx,
1896 .start = rsi_mac80211_start,
1897 .stop = rsi_mac80211_stop,
1898 .add_interface = rsi_mac80211_add_interface,
1899 .remove_interface = rsi_mac80211_remove_interface,
1900 .config = rsi_mac80211_config,
1901 .bss_info_changed = rsi_mac80211_bss_info_changed,
1902 .conf_tx = rsi_mac80211_conf_tx,
1903 .configure_filter = rsi_mac80211_conf_filter,
1904 .set_key = rsi_mac80211_set_key,
1905 .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1906 .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1907 .ampdu_action = rsi_mac80211_ampdu_action,
1908 .sta_add = rsi_mac80211_sta_add,
1909 .sta_remove = rsi_mac80211_sta_remove,
1910 .set_antenna = rsi_mac80211_set_antenna,
1911 .get_antenna = rsi_mac80211_get_antenna,
1912 .rfkill_poll = rsi_mac80211_rfkill_poll,
1913 .remain_on_channel = rsi_mac80211_roc,
1914 .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1915 #ifdef CONFIG_PM
1916 .suspend = rsi_mac80211_suspend,
1917 .resume = rsi_mac80211_resume,
1918 #endif
1919 };
1920
1921 /**
1922 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
1923 * @common: Pointer to the driver private structure.
1924 *
1925 * Return: 0 on success, negative error codes on failure.
1926 */
1927 int rsi_mac80211_attach(struct rsi_common *common)
1928 {
1929 int status = 0;
1930 struct ieee80211_hw *hw = NULL;
1931 struct wiphy *wiphy = NULL;
1932 struct rsi_hw *adapter = common->priv;
1933 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
1934
1935 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
1936
1937 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
1938 if (!hw) {
1939 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
1940 return -ENOMEM;
1941 }
1942
1943 wiphy = hw->wiphy;
1944
1945 SET_IEEE80211_DEV(hw, adapter->device);
1946
1947 hw->priv = adapter;
1948 adapter->hw = hw;
1949
1950 ieee80211_hw_set(hw, SIGNAL_DBM);
1951 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
1952 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1953 ieee80211_hw_set(hw, SUPPORTS_PS);
1954 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
1955
1956 hw->queues = MAX_HW_QUEUES;
1957 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
1958
1959 hw->max_rates = 1;
1960 hw->max_rate_tries = MAX_RETRIES;
1961 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
1962 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
1963
1964 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS;
1965 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS;
1966 hw->rate_control_algorithm = "AARF";
1967
1968 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
1969 ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
1970
1971 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1972 BIT(NL80211_IFTYPE_AP) |
1973 BIT(NL80211_IFTYPE_P2P_DEVICE) |
1974 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1975 BIT(NL80211_IFTYPE_P2P_GO);
1976
1977 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1978 wiphy->retry_short = RETRY_SHORT;
1979 wiphy->retry_long = RETRY_LONG;
1980 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1981 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1982 wiphy->flags = 0;
1983
1984 wiphy->available_antennas_rx = 1;
1985 wiphy->available_antennas_tx = 1;
1986
1987 rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
1988 wiphy->bands[NL80211_BAND_2GHZ] =
1989 &adapter->sbands[NL80211_BAND_2GHZ];
1990 if (common->num_supp_bands > 1) {
1991 rsi_register_rates_channels(adapter, NL80211_BAND_5GHZ);
1992 wiphy->bands[NL80211_BAND_5GHZ] =
1993 &adapter->sbands[NL80211_BAND_5GHZ];
1994 }
1995
1996 /* AP Parameters */
1997 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
1998 common->max_stations = wiphy->max_ap_assoc_sta;
1999 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
2000 hw->sta_data_size = sizeof(struct rsi_sta);
2001 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
2002 wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
2003 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
2004 wiphy->reg_notifier = rsi_reg_notify;
2005
2006 #ifdef CONFIG_PM
2007 wiphy->wowlan = &rsi_wowlan_support;
2008 #endif
2009
2010 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2011
2012 /* Wi-Fi direct parameters */
2013 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2014 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
2015 wiphy->max_remain_on_channel_duration = 10000;
2016 hw->max_listen_interval = 10;
2017 wiphy->iface_combinations = rsi_iface_combinations;
2018 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
2019
2020 if (common->coex_mode > 1)
2021 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2022
2023 status = ieee80211_register_hw(hw);
2024 if (status)
2025 return status;
2026
2027 return rsi_init_dbgfs(adapter);
2028 }
Linux with added FPC-III support