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
rsi_is_cipher_wep(struct rsi_common * common)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: int - 0 on success, negative error on failure.
192 */
rsi_register_rates_channels(struct rsi_hw * adapter,int band)193 static int 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 = kmemdup(rsi_2ghz_channels, sizeof(rsi_2ghz_channels),
200 GFP_KERNEL);
201 if (!channels)
202 return -ENOMEM;
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 = kmemdup(rsi_5ghz_channels, sizeof(rsi_5ghz_channels),
209 GFP_KERNEL);
210 if (!channels)
211 return -ENOMEM;
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 return 0;
231 }
232
rsi_mac80211_hw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)233 static int rsi_mac80211_hw_scan_start(struct ieee80211_hw *hw,
234 struct ieee80211_vif *vif,
235 struct ieee80211_scan_request *hw_req)
236 {
237 struct cfg80211_scan_request *scan_req = &hw_req->req;
238 struct rsi_hw *adapter = hw->priv;
239 struct rsi_common *common = adapter->priv;
240
241 rsi_dbg(INFO_ZONE, "***** Hardware scan start *****\n");
242 common->mac_ops_resumed = false;
243
244 if (common->fsm_state != FSM_MAC_INIT_DONE)
245 return -ENODEV;
246
247 if ((common->wow_flags & RSI_WOW_ENABLED) ||
248 scan_req->n_channels == 0)
249 return -EINVAL;
250
251 /* Scan already in progress. So return */
252 if (common->bgscan_en)
253 return -EBUSY;
254
255 /* If STA is not connected, return with special value 1, in order
256 * to start sw_scan in mac80211
257 */
258 if (!vif->cfg.assoc)
259 return 1;
260
261 mutex_lock(&common->mutex);
262 common->hwscan = scan_req;
263 if (!rsi_send_bgscan_params(common, RSI_START_BGSCAN)) {
264 if (!rsi_send_bgscan_probe_req(common, vif)) {
265 rsi_dbg(INFO_ZONE, "Background scan started...\n");
266 common->bgscan_en = true;
267 }
268 }
269 mutex_unlock(&common->mutex);
270
271 return 0;
272 }
273
rsi_mac80211_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)274 static void rsi_mac80211_cancel_hw_scan(struct ieee80211_hw *hw,
275 struct ieee80211_vif *vif)
276 {
277 struct rsi_hw *adapter = hw->priv;
278 struct rsi_common *common = adapter->priv;
279 struct cfg80211_scan_info info;
280
281 rsi_dbg(INFO_ZONE, "***** Hardware scan stop *****\n");
282 mutex_lock(&common->mutex);
283
284 if (common->bgscan_en) {
285 if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN))
286 common->bgscan_en = false;
287 info.aborted = false;
288 ieee80211_scan_completed(adapter->hw, &info);
289 rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n");
290 }
291 common->hwscan = NULL;
292 mutex_unlock(&common->mutex);
293 }
294
295 /**
296 * rsi_mac80211_detach() - This function is used to de-initialize the
297 * Mac80211 stack.
298 * @adapter: Pointer to the adapter structure.
299 *
300 * Return: None.
301 */
rsi_mac80211_detach(struct rsi_hw * adapter)302 void rsi_mac80211_detach(struct rsi_hw *adapter)
303 {
304 struct ieee80211_hw *hw = adapter->hw;
305 enum nl80211_band band;
306
307 if (hw) {
308 ieee80211_stop_queues(hw);
309 ieee80211_unregister_hw(hw);
310 ieee80211_free_hw(hw);
311 adapter->hw = NULL;
312 }
313
314 for (band = 0; band < NUM_NL80211_BANDS; band++) {
315 struct ieee80211_supported_band *sband =
316 &adapter->sbands[band];
317
318 kfree(sband->channels);
319 }
320
321 #ifdef CONFIG_RSI_DEBUGFS
322 rsi_remove_dbgfs(adapter);
323 kfree(adapter->dfsentry);
324 #endif
325 }
326 EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
327
328 /**
329 * rsi_indicate_tx_status() - This function indicates the transmit status.
330 * @adapter: Pointer to the adapter structure.
331 * @skb: Pointer to the socket buffer structure.
332 * @status: Status
333 *
334 * Return: None.
335 */
rsi_indicate_tx_status(struct rsi_hw * adapter,struct sk_buff * skb,int status)336 void rsi_indicate_tx_status(struct rsi_hw *adapter,
337 struct sk_buff *skb,
338 int status)
339 {
340 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
341 struct skb_info *tx_params;
342
343 if (!adapter->hw) {
344 rsi_dbg(ERR_ZONE, "##### No MAC #####\n");
345 return;
346 }
347
348 if (!status)
349 info->flags |= IEEE80211_TX_STAT_ACK;
350
351 tx_params = (struct skb_info *)info->driver_data;
352 skb_pull(skb, tx_params->internal_hdr_size);
353 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
354
355 ieee80211_tx_status_irqsafe(adapter->hw, skb);
356 }
357
358 /**
359 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
360 * transmitted frame.SKB contains the buffer starting
361 * from the IEEE 802.11 header.
362 * @hw: Pointer to the ieee80211_hw structure.
363 * @control: Pointer to the ieee80211_tx_control structure
364 * @skb: Pointer to the socket buffer structure.
365 *
366 * Return: None
367 */
rsi_mac80211_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)368 static void rsi_mac80211_tx(struct ieee80211_hw *hw,
369 struct ieee80211_tx_control *control,
370 struct sk_buff *skb)
371 {
372 struct rsi_hw *adapter = hw->priv;
373 struct rsi_common *common = adapter->priv;
374 struct ieee80211_hdr *wlh = (struct ieee80211_hdr *)skb->data;
375
376 if (ieee80211_is_auth(wlh->frame_control))
377 common->mac_ops_resumed = false;
378
379 rsi_core_xmit(common, skb);
380 }
381
382 /**
383 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
384 * the driver init is complete by then, just
385 * returns success.
386 * @hw: Pointer to the ieee80211_hw structure.
387 *
388 * Return: 0 as success.
389 */
rsi_mac80211_start(struct ieee80211_hw * hw)390 static int rsi_mac80211_start(struct ieee80211_hw *hw)
391 {
392 struct rsi_hw *adapter = hw->priv;
393 struct rsi_common *common = adapter->priv;
394
395 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
396 mutex_lock(&common->mutex);
397 if (common->hibernate_resume) {
398 common->reinit_hw = true;
399 adapter->host_intf_ops->reinit_device(adapter);
400 wait_for_completion(&adapter->priv->wlan_init_completion);
401 }
402 common->iface_down = false;
403 wiphy_rfkill_start_polling(hw->wiphy);
404 rsi_send_rx_filter_frame(common, 0);
405 mutex_unlock(&common->mutex);
406
407 return 0;
408 }
409
410 /**
411 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
412 * @hw: Pointer to the ieee80211_hw structure.
413 * @suspend: true if the this was called from suspend flow.
414 *
415 * Return: None.
416 */
rsi_mac80211_stop(struct ieee80211_hw * hw,bool suspend)417 static void rsi_mac80211_stop(struct ieee80211_hw *hw, bool suspend)
418 {
419 struct rsi_hw *adapter = hw->priv;
420 struct rsi_common *common = adapter->priv;
421
422 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
423 mutex_lock(&common->mutex);
424 common->iface_down = true;
425 wiphy_rfkill_stop_polling(hw->wiphy);
426
427 /* Block all rx frames */
428 rsi_send_rx_filter_frame(common, 0xffff);
429
430 mutex_unlock(&common->mutex);
431 }
432
rsi_map_intf_mode(enum nl80211_iftype vif_type)433 static int rsi_map_intf_mode(enum nl80211_iftype vif_type)
434 {
435 switch (vif_type) {
436 case NL80211_IFTYPE_STATION:
437 return RSI_OPMODE_STA;
438 case NL80211_IFTYPE_AP:
439 return RSI_OPMODE_AP;
440 case NL80211_IFTYPE_P2P_DEVICE:
441 return RSI_OPMODE_P2P_CLIENT;
442 case NL80211_IFTYPE_P2P_CLIENT:
443 return RSI_OPMODE_P2P_CLIENT;
444 case NL80211_IFTYPE_P2P_GO:
445 return RSI_OPMODE_P2P_GO;
446 default:
447 return RSI_OPMODE_UNSUPPORTED;
448 }
449 }
450
451 /**
452 * rsi_mac80211_add_interface() - This function is called when a netdevice
453 * attached to the hardware is enabled.
454 * @hw: Pointer to the ieee80211_hw structure.
455 * @vif: Pointer to the ieee80211_vif structure.
456 *
457 * Return: ret: 0 on success, negative error code on failure.
458 */
rsi_mac80211_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)459 static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
460 struct ieee80211_vif *vif)
461 {
462 struct rsi_hw *adapter = hw->priv;
463 struct rsi_common *common = adapter->priv;
464 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
465 enum opmode intf_mode;
466 enum vap_status vap_status;
467 int vap_idx = -1, i;
468
469 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
470 mutex_lock(&common->mutex);
471
472 intf_mode = rsi_map_intf_mode(vif->type);
473 if (intf_mode == RSI_OPMODE_UNSUPPORTED) {
474 rsi_dbg(ERR_ZONE,
475 "%s: Interface type %d not supported\n", __func__,
476 vif->type);
477 mutex_unlock(&common->mutex);
478 return -EOPNOTSUPP;
479 }
480 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) ||
481 (vif->type == NL80211_IFTYPE_P2P_CLIENT) ||
482 (vif->type == NL80211_IFTYPE_P2P_GO))
483 common->p2p_enabled = true;
484
485 /* Get free vap index */
486 for (i = 0; i < RSI_MAX_VIFS; i++) {
487 if (!adapter->vifs[i] ||
488 !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) {
489 vap_idx = i;
490 break;
491 }
492 }
493 if (vap_idx < 0) {
494 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n");
495 mutex_unlock(&common->mutex);
496 return -EOPNOTSUPP;
497 }
498 vif_info->vap_id = vap_idx;
499 adapter->vifs[vap_idx] = vif;
500 adapter->sc_nvifs++;
501 vap_status = VAP_ADD;
502
503 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr,
504 vif_info->vap_id, vap_status)) {
505 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n");
506 mutex_unlock(&common->mutex);
507 return -EINVAL;
508 }
509
510 if ((vif->type == NL80211_IFTYPE_AP) ||
511 (vif->type == NL80211_IFTYPE_P2P_GO)) {
512 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS);
513 for (i = 0; i < common->max_stations; i++)
514 common->stations[i].sta = NULL;
515 }
516
517 mutex_unlock(&common->mutex);
518
519 return 0;
520 }
521
522 /**
523 * rsi_mac80211_remove_interface() - This function notifies driver that an
524 * interface is going down.
525 * @hw: Pointer to the ieee80211_hw structure.
526 * @vif: Pointer to the ieee80211_vif structure.
527 *
528 * Return: None.
529 */
rsi_mac80211_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)530 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
531 struct ieee80211_vif *vif)
532 {
533 struct rsi_hw *adapter = hw->priv;
534 struct rsi_common *common = adapter->priv;
535 enum opmode opmode;
536 int i;
537
538 rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
539
540 mutex_lock(&common->mutex);
541
542 if (adapter->sc_nvifs <= 0) {
543 mutex_unlock(&common->mutex);
544 return;
545 }
546
547 opmode = rsi_map_intf_mode(vif->type);
548 if (opmode == RSI_OPMODE_UNSUPPORTED) {
549 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
550 mutex_unlock(&common->mutex);
551 return;
552 }
553 for (i = 0; i < RSI_MAX_VIFS; i++) {
554 if (!adapter->vifs[i])
555 continue;
556 if (vif == adapter->vifs[i]) {
557 rsi_set_vap_capabilities(common, opmode, vif->addr,
558 i, VAP_DELETE);
559 adapter->sc_nvifs--;
560 adapter->vifs[i] = NULL;
561 }
562 }
563 mutex_unlock(&common->mutex);
564 }
565
566 /**
567 * rsi_channel_change() - This function is a performs the checks
568 * required for changing a channel and sets
569 * the channel accordingly.
570 * @hw: Pointer to the ieee80211_hw structure.
571 *
572 * Return: 0 on success, negative error code on failure.
573 */
rsi_channel_change(struct ieee80211_hw * hw)574 static int rsi_channel_change(struct ieee80211_hw *hw)
575 {
576 struct rsi_hw *adapter = hw->priv;
577 struct rsi_common *common = adapter->priv;
578 int status = -EOPNOTSUPP;
579 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
580 u16 channel = curchan->hw_value;
581 struct ieee80211_vif *vif;
582 bool assoc = false;
583 int i;
584
585 rsi_dbg(INFO_ZONE,
586 "%s: Set channel: %d MHz type: %d channel_no %d\n",
587 __func__, curchan->center_freq,
588 curchan->flags, channel);
589
590 for (i = 0; i < RSI_MAX_VIFS; i++) {
591 vif = adapter->vifs[i];
592 if (!vif)
593 continue;
594 if (vif->type == NL80211_IFTYPE_STATION) {
595 if (vif->cfg.assoc) {
596 assoc = true;
597 break;
598 }
599 }
600 }
601 if (assoc) {
602 if (!common->hw_data_qs_blocked &&
603 (rsi_get_connected_channel(vif) != channel)) {
604 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
605 if (!rsi_send_block_unblock_frame(common, true))
606 common->hw_data_qs_blocked = true;
607 }
608 }
609
610 status = rsi_band_check(common, curchan);
611 if (!status)
612 status = rsi_set_channel(adapter->priv, curchan);
613
614 if (assoc) {
615 if (common->hw_data_qs_blocked &&
616 (rsi_get_connected_channel(vif) == channel)) {
617 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
618 if (!rsi_send_block_unblock_frame(common, false))
619 common->hw_data_qs_blocked = false;
620 }
621 }
622
623 return status;
624 }
625
626 /**
627 * rsi_config_power() - This function configures tx power to device
628 * @hw: Pointer to the ieee80211_hw structure.
629 *
630 * Return: 0 on success, negative error code on failure.
631 */
rsi_config_power(struct ieee80211_hw * hw)632 static int rsi_config_power(struct ieee80211_hw *hw)
633 {
634 struct rsi_hw *adapter = hw->priv;
635 struct rsi_common *common = adapter->priv;
636 struct ieee80211_conf *conf = &hw->conf;
637
638 if (adapter->sc_nvifs <= 0) {
639 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
640 return -EINVAL;
641 }
642
643 rsi_dbg(INFO_ZONE,
644 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
645
646 if (conf->power_level == common->tx_power)
647 return 0;
648
649 common->tx_power = conf->power_level;
650
651 return rsi_send_radio_params_update(common);
652 }
653
654 /**
655 * rsi_mac80211_config() - This function is a handler for configuration
656 * requests. The stack calls this function to
657 * change hardware configuration, e.g., channel.
658 * @hw: Pointer to the ieee80211_hw structure.
659 * @radio_idx: Radio index.
660 * @changed: Changed flags set.
661 *
662 * Return: 0 on success, negative error code on failure.
663 */
rsi_mac80211_config(struct ieee80211_hw * hw,int radio_idx,u32 changed)664 static int rsi_mac80211_config(struct ieee80211_hw *hw,
665 int radio_idx,
666 u32 changed)
667 {
668 struct rsi_hw *adapter = hw->priv;
669 struct rsi_common *common = adapter->priv;
670 struct ieee80211_conf *conf = &hw->conf;
671 int status = -EOPNOTSUPP;
672
673 mutex_lock(&common->mutex);
674
675 if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
676 status = rsi_channel_change(hw);
677
678 /* tx power */
679 if (changed & IEEE80211_CONF_CHANGE_POWER) {
680 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
681 status = rsi_config_power(hw);
682 }
683
684 /* Power save parameters */
685 if ((changed & IEEE80211_CONF_CHANGE_PS) &&
686 !common->mac_ops_resumed) {
687 struct ieee80211_vif *vif, *sta_vif = NULL;
688 unsigned long flags;
689 int i, set_ps = 1;
690
691 for (i = 0; i < RSI_MAX_VIFS; i++) {
692 vif = adapter->vifs[i];
693 if (!vif)
694 continue;
695 /* Don't go to power save if AP vap exists */
696 if ((vif->type == NL80211_IFTYPE_AP) ||
697 (vif->type == NL80211_IFTYPE_P2P_GO)) {
698 set_ps = 0;
699 break;
700 }
701 if ((vif->type == NL80211_IFTYPE_STATION ||
702 vif->type == NL80211_IFTYPE_P2P_CLIENT) &&
703 (!sta_vif || vif->cfg.assoc))
704 sta_vif = vif;
705 }
706 if (set_ps && sta_vif) {
707 spin_lock_irqsave(&adapter->ps_lock, flags);
708 if (conf->flags & IEEE80211_CONF_PS)
709 rsi_enable_ps(adapter, sta_vif);
710 else
711 rsi_disable_ps(adapter, sta_vif);
712 spin_unlock_irqrestore(&adapter->ps_lock, flags);
713 }
714 }
715
716 /* RTS threshold */
717 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
718 rsi_dbg(INFO_ZONE, "RTS threshold\n");
719 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
720 rsi_dbg(INFO_ZONE,
721 "%s: Sending vap updates....\n", __func__);
722 status = rsi_send_vap_dynamic_update(common);
723 }
724 }
725 mutex_unlock(&common->mutex);
726
727 return status;
728 }
729
730 /**
731 * rsi_get_connected_channel() - This function is used to get the current
732 * connected channel number.
733 * @vif: Pointer to the ieee80211_vif structure.
734 *
735 * Return: Current connected AP's channel number is returned.
736 */
rsi_get_connected_channel(struct ieee80211_vif * vif)737 u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
738 {
739 struct ieee80211_bss_conf *bss;
740 struct ieee80211_channel *channel;
741
742 if (!vif)
743 return 0;
744
745 bss = &vif->bss_conf;
746 channel = bss->chanreq.oper.chan;
747
748 if (!channel)
749 return 0;
750
751 return channel->hw_value;
752 }
753
rsi_switch_channel(struct rsi_hw * adapter,struct ieee80211_vif * vif)754 static void rsi_switch_channel(struct rsi_hw *adapter,
755 struct ieee80211_vif *vif)
756 {
757 struct rsi_common *common = adapter->priv;
758 struct ieee80211_channel *channel;
759
760 if (common->iface_down)
761 return;
762 if (!vif)
763 return;
764
765 channel = vif->bss_conf.chanreq.oper.chan;
766
767 if (!channel)
768 return;
769
770 rsi_band_check(common, channel);
771 rsi_set_channel(common, channel);
772 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
773 }
774
775 /**
776 * rsi_mac80211_bss_info_changed() - This function is a handler for config
777 * requests related to BSS parameters that
778 * may vary during BSS's lifespan.
779 * @hw: Pointer to the ieee80211_hw structure.
780 * @vif: Pointer to the ieee80211_vif structure.
781 * @bss_conf: Pointer to the ieee80211_bss_conf structure.
782 * @changed: Changed flags set.
783 *
784 * Return: None.
785 */
rsi_mac80211_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changed)786 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
787 struct ieee80211_vif *vif,
788 struct ieee80211_bss_conf *bss_conf,
789 u64 changed)
790 {
791 struct rsi_hw *adapter = hw->priv;
792 struct rsi_common *common = adapter->priv;
793 struct ieee80211_bss_conf *bss = &vif->bss_conf;
794 struct ieee80211_conf *conf = &hw->conf;
795 u16 rx_filter_word = 0;
796
797 mutex_lock(&common->mutex);
798 if (changed & BSS_CHANGED_ASSOC) {
799 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
800 __func__, vif->cfg.assoc);
801 if (vif->cfg.assoc) {
802 /* Send the RX filter frame */
803 rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
804 ALLOW_CTRL_ASSOC_PEER |
805 ALLOW_MGMT_ASSOC_PEER);
806 rsi_send_rx_filter_frame(common, rx_filter_word);
807 }
808 rsi_inform_bss_status(common,
809 RSI_OPMODE_STA,
810 vif->cfg.assoc,
811 bss_conf->bssid,
812 bss_conf->qos,
813 vif->cfg.aid,
814 NULL, 0,
815 bss_conf->assoc_capability, vif);
816 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
817 adapter->ps_info.listen_interval = conf->listen_interval;
818
819 /* If U-APSD is updated, send ps parameters to firmware */
820 if (vif->cfg.assoc) {
821 if (common->uapsd_bitmap) {
822 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
823 rsi_conf_uapsd(adapter, vif);
824 }
825 } else {
826 common->uapsd_bitmap = 0;
827 }
828 }
829
830 if (changed & BSS_CHANGED_CQM) {
831 common->cqm_info.last_cqm_event_rssi = 0;
832 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
833 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
834 rsi_dbg(INFO_ZONE, "RSSI threshold & hysteresis are: %d %d\n",
835 common->cqm_info.rssi_thold,
836 common->cqm_info.rssi_hyst);
837 }
838
839 if (changed & BSS_CHANGED_BEACON_INT) {
840 rsi_dbg(INFO_ZONE, "%s: Changed Beacon interval: %d\n",
841 __func__, bss_conf->beacon_int);
842 if (common->beacon_interval != bss->beacon_int) {
843 common->beacon_interval = bss->beacon_int;
844 if (vif->type == NL80211_IFTYPE_AP) {
845 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
846
847 rsi_set_vap_capabilities(common, RSI_OPMODE_AP,
848 vif->addr, vif_info->vap_id,
849 VAP_UPDATE);
850 }
851 }
852 adapter->ps_info.listen_interval =
853 bss->beacon_int * adapter->ps_info.num_bcns_per_lis_int;
854 }
855
856 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
857 ((vif->type == NL80211_IFTYPE_AP) ||
858 (vif->type == NL80211_IFTYPE_P2P_GO))) {
859 if (bss->enable_beacon) {
860 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
861 common->beacon_enabled = 1;
862 } else {
863 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
864 common->beacon_enabled = 0;
865 }
866 }
867
868 mutex_unlock(&common->mutex);
869 }
870
871 /**
872 * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
873 * @hw: Pointer to the ieee80211_hw structure.
874 * @changed_flags: Changed flags set.
875 * @total_flags: Total initial flags set.
876 * @multicast: Multicast.
877 *
878 * Return: None.
879 */
rsi_mac80211_conf_filter(struct ieee80211_hw * hw,u32 changed_flags,u32 * total_flags,u64 multicast)880 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
881 u32 changed_flags,
882 u32 *total_flags,
883 u64 multicast)
884 {
885 /* Not doing much here as of now */
886 *total_flags &= RSI_SUPP_FILTERS;
887 }
888
889 /**
890 * rsi_mac80211_conf_tx() - This function configures TX queue parameters
891 * (EDCF (aifs, cw_min, cw_max), bursting)
892 * for a hardware TX queue.
893 * @hw: Pointer to the ieee80211_hw structure
894 * @vif: Pointer to the ieee80211_vif structure.
895 * @link_id: the link ID if MLO is used, otherwise 0
896 * @queue: Queue number.
897 * @params: Pointer to ieee80211_tx_queue_params structure.
898 *
899 * Return: 0 on success, negative error code on failure.
900 */
rsi_mac80211_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 queue,const struct ieee80211_tx_queue_params * params)901 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
902 struct ieee80211_vif *vif,
903 unsigned int link_id, u16 queue,
904 const struct ieee80211_tx_queue_params *params)
905 {
906 struct rsi_hw *adapter = hw->priv;
907 struct rsi_common *common = adapter->priv;
908 u8 idx = 0;
909
910 if (queue >= IEEE80211_NUM_ACS)
911 return 0;
912
913 rsi_dbg(INFO_ZONE,
914 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
915 __func__, queue, params->aifs,
916 params->cw_min, params->cw_max, params->txop);
917
918 mutex_lock(&common->mutex);
919 /* Map into the way the f/w expects */
920 switch (queue) {
921 case IEEE80211_AC_VO:
922 idx = VO_Q;
923 break;
924 case IEEE80211_AC_VI:
925 idx = VI_Q;
926 break;
927 case IEEE80211_AC_BE:
928 idx = BE_Q;
929 break;
930 case IEEE80211_AC_BK:
931 idx = BK_Q;
932 break;
933 default:
934 idx = BE_Q;
935 break;
936 }
937
938 memcpy(&common->edca_params[idx],
939 params,
940 sizeof(struct ieee80211_tx_queue_params));
941
942 if (params->uapsd)
943 common->uapsd_bitmap |= idx;
944 else
945 common->uapsd_bitmap &= (~idx);
946
947 mutex_unlock(&common->mutex);
948
949 return 0;
950 }
951
952 /**
953 * rsi_hal_key_config() - This function loads the keys into the firmware.
954 * @hw: Pointer to the ieee80211_hw structure.
955 * @vif: Pointer to the ieee80211_vif structure.
956 * @key: Pointer to the ieee80211_key_conf structure.
957 * @sta: Pointer to the ieee80211_sta structure.
958 *
959 * Return: status: 0 on success, negative error codes on failure.
960 */
rsi_hal_key_config(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * key,struct ieee80211_sta * sta)961 static int rsi_hal_key_config(struct ieee80211_hw *hw,
962 struct ieee80211_vif *vif,
963 struct ieee80211_key_conf *key,
964 struct ieee80211_sta *sta)
965 {
966 struct rsi_hw *adapter = hw->priv;
967 struct rsi_sta *rsta = NULL;
968 int status;
969 u8 key_type;
970 s16 sta_id = 0;
971
972 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
973 key_type = RSI_PAIRWISE_KEY;
974 else
975 key_type = RSI_GROUP_KEY;
976
977 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
978 __func__, key->cipher, key_type, key->keylen);
979
980 if ((vif->type == NL80211_IFTYPE_AP) ||
981 (vif->type == NL80211_IFTYPE_P2P_GO)) {
982 if (sta) {
983 rsta = rsi_find_sta(adapter->priv, sta->addr);
984 if (rsta)
985 sta_id = rsta->sta_id;
986 }
987 adapter->priv->key = key;
988 } else {
989 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
990 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
991 status = rsi_hal_load_key(adapter->priv,
992 key->key,
993 key->keylen,
994 RSI_PAIRWISE_KEY,
995 key->keyidx,
996 key->cipher,
997 sta_id,
998 vif);
999 if (status)
1000 return status;
1001 }
1002 }
1003
1004 status = rsi_hal_load_key(adapter->priv,
1005 key->key,
1006 key->keylen,
1007 key_type,
1008 key->keyidx,
1009 key->cipher,
1010 sta_id,
1011 vif);
1012 if (status)
1013 return status;
1014
1015 if (vif->type == NL80211_IFTYPE_STATION &&
1016 (key->cipher == WLAN_CIPHER_SUITE_WEP104 ||
1017 key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
1018 if (!rsi_send_block_unblock_frame(adapter->priv, false))
1019 adapter->priv->hw_data_qs_blocked = false;
1020 }
1021
1022 return 0;
1023 }
1024
1025 /**
1026 * rsi_mac80211_set_key() - This function sets type of key to be loaded.
1027 * @hw: Pointer to the ieee80211_hw structure.
1028 * @cmd: enum set_key_cmd.
1029 * @vif: Pointer to the ieee80211_vif structure.
1030 * @sta: Pointer to the ieee80211_sta structure.
1031 * @key: Pointer to the ieee80211_key_conf structure.
1032 *
1033 * Return: status: 0 on success, negative error code on failure.
1034 */
rsi_mac80211_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)1035 static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
1036 enum set_key_cmd cmd,
1037 struct ieee80211_vif *vif,
1038 struct ieee80211_sta *sta,
1039 struct ieee80211_key_conf *key)
1040 {
1041 struct rsi_hw *adapter = hw->priv;
1042 struct rsi_common *common = adapter->priv;
1043 struct security_info *secinfo = &common->secinfo;
1044 int status;
1045
1046 mutex_lock(&common->mutex);
1047 switch (cmd) {
1048 case SET_KEY:
1049 status = rsi_hal_key_config(hw, vif, key, sta);
1050 if (status) {
1051 mutex_unlock(&common->mutex);
1052 return status;
1053 }
1054
1055 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
1056 secinfo->ptk_cipher = key->cipher;
1057 else
1058 secinfo->gtk_cipher = key->cipher;
1059
1060 key->hw_key_idx = key->keyidx;
1061 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1062
1063 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
1064 break;
1065
1066 case DISABLE_KEY:
1067 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
1068 memset(key, 0, sizeof(struct ieee80211_key_conf));
1069 status = rsi_hal_key_config(hw, vif, key, sta);
1070 break;
1071
1072 default:
1073 status = -EOPNOTSUPP;
1074 break;
1075 }
1076
1077 mutex_unlock(&common->mutex);
1078 return status;
1079 }
1080
1081 /**
1082 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
1083 * the corresponding mlme_action flag and
1084 * informs the f/w regarding this.
1085 * @hw: Pointer to the ieee80211_hw structure.
1086 * @vif: Pointer to the ieee80211_vif structure.
1087 * @params: Pointer to A-MPDU action parameters
1088 *
1089 * Return: status: 0 on success, negative error code on failure.
1090 */
rsi_mac80211_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1091 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
1092 struct ieee80211_vif *vif,
1093 struct ieee80211_ampdu_params *params)
1094 {
1095 int status = -EOPNOTSUPP;
1096 struct rsi_hw *adapter = hw->priv;
1097 struct rsi_common *common = adapter->priv;
1098 struct rsi_sta *rsta = NULL;
1099 u16 seq_no = 0, seq_start = 0;
1100 u8 ii = 0;
1101 struct ieee80211_sta *sta = params->sta;
1102 u8 sta_id = 0;
1103 enum ieee80211_ampdu_mlme_action action = params->action;
1104 u16 tid = params->tid;
1105 u16 *ssn = ¶ms->ssn;
1106 u8 buf_size = params->buf_size;
1107
1108 for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1109 if (vif == adapter->vifs[ii])
1110 break;
1111 }
1112
1113 if (ii >= RSI_MAX_VIFS)
1114 return status;
1115
1116 mutex_lock(&common->mutex);
1117
1118 if (ssn != NULL)
1119 seq_no = *ssn;
1120
1121 if ((vif->type == NL80211_IFTYPE_AP) ||
1122 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1123 rsta = rsi_find_sta(common, sta->addr);
1124 if (!rsta) {
1125 rsi_dbg(ERR_ZONE, "No station mapped\n");
1126 status = 0;
1127 goto unlock;
1128 }
1129 sta_id = rsta->sta_id;
1130 }
1131
1132 rsi_dbg(INFO_ZONE,
1133 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1134 __func__, tid, seq_no, buf_size, sta_id);
1135
1136 switch (action) {
1137 case IEEE80211_AMPDU_RX_START:
1138 status = rsi_send_aggregation_params_frame(common,
1139 tid,
1140 seq_no,
1141 buf_size,
1142 STA_RX_ADDBA_DONE,
1143 sta_id);
1144 break;
1145
1146 case IEEE80211_AMPDU_RX_STOP:
1147 status = rsi_send_aggregation_params_frame(common,
1148 tid,
1149 0,
1150 buf_size,
1151 STA_RX_DELBA,
1152 sta_id);
1153 break;
1154
1155 case IEEE80211_AMPDU_TX_START:
1156 if ((vif->type == NL80211_IFTYPE_STATION) ||
1157 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1158 common->vif_info[ii].seq_start = seq_no;
1159 else if ((vif->type == NL80211_IFTYPE_AP) ||
1160 (vif->type == NL80211_IFTYPE_P2P_GO))
1161 rsta->seq_start[tid] = seq_no;
1162 status = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1163 break;
1164
1165 case IEEE80211_AMPDU_TX_STOP_CONT:
1166 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1167 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1168 status = rsi_send_aggregation_params_frame(common,
1169 tid,
1170 seq_no,
1171 buf_size,
1172 STA_TX_DELBA,
1173 sta_id);
1174 if (!status)
1175 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1176 break;
1177
1178 case IEEE80211_AMPDU_TX_OPERATIONAL:
1179 if ((vif->type == NL80211_IFTYPE_STATION) ||
1180 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1181 seq_start = common->vif_info[ii].seq_start;
1182 else if ((vif->type == NL80211_IFTYPE_AP) ||
1183 (vif->type == NL80211_IFTYPE_P2P_GO))
1184 seq_start = rsta->seq_start[tid];
1185 status = rsi_send_aggregation_params_frame(common,
1186 tid,
1187 seq_start,
1188 buf_size,
1189 STA_TX_ADDBA_DONE,
1190 sta_id);
1191 break;
1192
1193 default:
1194 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__);
1195 break;
1196 }
1197
1198 unlock:
1199 mutex_unlock(&common->mutex);
1200 return status;
1201 }
1202
1203 /**
1204 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1205 * @hw: Pointer to the ieee80211_hw structure.
1206 * @radio_idx: Radio index.
1207 * @value: Rts threshold value.
1208 *
1209 * Return: 0 on success.
1210 */
rsi_mac80211_set_rts_threshold(struct ieee80211_hw * hw,int radio_idx,u32 value)1211 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1212 int radio_idx, u32 value)
1213 {
1214 struct rsi_hw *adapter = hw->priv;
1215 struct rsi_common *common = adapter->priv;
1216
1217 mutex_lock(&common->mutex);
1218 common->rts_threshold = value;
1219 mutex_unlock(&common->mutex);
1220
1221 return 0;
1222 }
1223
1224 /**
1225 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1226 * @hw: Pointer to the ieee80211_hw structure
1227 * @vif: Pointer to the ieee80211_vif structure.
1228 * @mask: Pointer to the cfg80211_bitrate_mask structure.
1229 *
1230 * Return: 0 on success.
1231 */
rsi_mac80211_set_rate_mask(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct cfg80211_bitrate_mask * mask)1232 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1233 struct ieee80211_vif *vif,
1234 const struct cfg80211_bitrate_mask *mask)
1235 {
1236 const unsigned int mcs_offset = ARRAY_SIZE(rsi_rates);
1237 struct rsi_hw *adapter = hw->priv;
1238 struct rsi_common *common = adapter->priv;
1239 int i;
1240
1241 mutex_lock(&common->mutex);
1242
1243 for (i = 0; i < ARRAY_SIZE(common->rate_config); i++) {
1244 struct rsi_rate_config *cfg = &common->rate_config[i];
1245 u32 bm;
1246
1247 bm = mask->control[i].legacy | (mask->control[i].ht_mcs[0] << mcs_offset);
1248 if (hweight32(bm) == 1) { /* single rate */
1249 int rate_index = ffs(bm) - 1;
1250
1251 if (rate_index < mcs_offset)
1252 cfg->fixed_hw_rate = rsi_rates[rate_index].hw_value;
1253 else
1254 cfg->fixed_hw_rate = rsi_mcsrates[rate_index - mcs_offset];
1255 cfg->fixed_enabled = true;
1256 } else {
1257 cfg->configured_mask = bm;
1258 cfg->fixed_enabled = false;
1259 }
1260 }
1261
1262 mutex_unlock(&common->mutex);
1263
1264 return 0;
1265 }
1266
1267 /**
1268 * rsi_perform_cqm() - This function performs cqm.
1269 * @common: Pointer to the driver private structure.
1270 * @bssid: pointer to the bssid.
1271 * @rssi: RSSI value.
1272 * @vif: Pointer to the ieee80211_vif structure.
1273 */
rsi_perform_cqm(struct rsi_common * common,u8 * bssid,s8 rssi,struct ieee80211_vif * vif)1274 static void rsi_perform_cqm(struct rsi_common *common,
1275 u8 *bssid,
1276 s8 rssi,
1277 struct ieee80211_vif *vif)
1278 {
1279 s8 last_event = common->cqm_info.last_cqm_event_rssi;
1280 int thold = common->cqm_info.rssi_thold;
1281 u32 hyst = common->cqm_info.rssi_hyst;
1282 enum nl80211_cqm_rssi_threshold_event event;
1283
1284 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1285 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1286 else if (rssi > thold &&
1287 (last_event == 0 || rssi > (last_event + hyst)))
1288 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1289 else
1290 return;
1291
1292 common->cqm_info.last_cqm_event_rssi = rssi;
1293 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1294 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1295
1296 return;
1297 }
1298
1299 /**
1300 * rsi_fill_rx_status() - This function fills rx status in
1301 * ieee80211_rx_status structure.
1302 * @hw: Pointer to the ieee80211_hw structure.
1303 * @skb: Pointer to the socket buffer structure.
1304 * @common: Pointer to the driver private structure.
1305 * @rxs: Pointer to the ieee80211_rx_status structure.
1306 *
1307 * Return: None.
1308 */
rsi_fill_rx_status(struct ieee80211_hw * hw,struct sk_buff * skb,struct rsi_common * common,struct ieee80211_rx_status * rxs)1309 static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1310 struct sk_buff *skb,
1311 struct rsi_common *common,
1312 struct ieee80211_rx_status *rxs)
1313 {
1314 struct rsi_hw *adapter = common->priv;
1315 struct ieee80211_vif *vif;
1316 struct ieee80211_bss_conf *bss = NULL;
1317 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1318 struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1319 struct ieee80211_hdr *hdr;
1320 char rssi = rx_params->rssi;
1321 u8 hdrlen = 0;
1322 u8 channel = rx_params->channel;
1323 s32 freq;
1324 int i;
1325
1326 hdr = ((struct ieee80211_hdr *)(skb->data));
1327 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1328
1329 memset(info, 0, sizeof(struct ieee80211_tx_info));
1330
1331 rxs->signal = -(rssi);
1332
1333 rxs->band = common->band;
1334
1335 freq = ieee80211_channel_to_frequency(channel, rxs->band);
1336
1337 if (freq)
1338 rxs->freq = freq;
1339
1340 if (ieee80211_has_protected(hdr->frame_control)) {
1341 if (rsi_is_cipher_wep(common)) {
1342 memmove(skb->data + 4, skb->data, hdrlen);
1343 skb_pull(skb, 4);
1344 } else {
1345 memmove(skb->data + 8, skb->data, hdrlen);
1346 skb_pull(skb, 8);
1347 rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1348 }
1349 rxs->flag |= RX_FLAG_DECRYPTED;
1350 rxs->flag |= RX_FLAG_IV_STRIPPED;
1351 }
1352
1353 for (i = 0; i < RSI_MAX_VIFS; i++) {
1354 vif = adapter->vifs[i];
1355 if (!vif)
1356 continue;
1357 if (vif->type == NL80211_IFTYPE_STATION) {
1358 bss = &vif->bss_conf;
1359 break;
1360 }
1361 }
1362 if (!bss)
1363 return;
1364 /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1365 if (vif->cfg.assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1366 if (ieee80211_is_beacon(hdr->frame_control))
1367 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1368 }
1369
1370 return;
1371 }
1372
1373 /**
1374 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211.
1375 * @common: Pointer to the driver private structure.
1376 * @skb: Pointer to the socket buffer structure.
1377 *
1378 * Return: None.
1379 */
rsi_indicate_pkt_to_os(struct rsi_common * common,struct sk_buff * skb)1380 void rsi_indicate_pkt_to_os(struct rsi_common *common,
1381 struct sk_buff *skb)
1382 {
1383 struct rsi_hw *adapter = common->priv;
1384 struct ieee80211_hw *hw = adapter->hw;
1385 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1386
1387 if ((common->iface_down) || (!adapter->sc_nvifs)) {
1388 dev_kfree_skb(skb);
1389 return;
1390 }
1391
1392 /* filling in the ieee80211_rx_status flags */
1393 rsi_fill_rx_status(hw, skb, common, rx_status);
1394
1395 ieee80211_rx_irqsafe(hw, skb);
1396 }
1397
1398 /**
1399 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1400 * connected.
1401 * @hw: pointer to the ieee80211_hw structure.
1402 * @vif: Pointer to the ieee80211_vif structure.
1403 * @sta: Pointer to the ieee80211_sta structure.
1404 *
1405 * Return: 0 on success, negative error codes on failure.
1406 */
rsi_mac80211_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1407 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1408 struct ieee80211_vif *vif,
1409 struct ieee80211_sta *sta)
1410 {
1411 struct rsi_hw *adapter = hw->priv;
1412 struct rsi_common *common = adapter->priv;
1413 bool sta_exist = false;
1414 struct rsi_sta *rsta;
1415 int status = 0;
1416
1417 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1418
1419 mutex_lock(&common->mutex);
1420
1421 if ((vif->type == NL80211_IFTYPE_AP) ||
1422 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1423 u8 cnt;
1424 int sta_idx = -1;
1425 int free_index = -1;
1426
1427 /* Check if max stations reached */
1428 if (common->num_stations >= common->max_stations) {
1429 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1430 status = -EOPNOTSUPP;
1431 goto unlock;
1432 }
1433 for (cnt = 0; cnt < common->max_stations; cnt++) {
1434 rsta = &common->stations[cnt];
1435
1436 if (!rsta->sta) {
1437 if (free_index < 0)
1438 free_index = cnt;
1439 continue;
1440 }
1441 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1442 rsi_dbg(INFO_ZONE, "Station exists\n");
1443 sta_idx = cnt;
1444 sta_exist = true;
1445 break;
1446 }
1447 }
1448 if (!sta_exist) {
1449 if (free_index >= 0)
1450 sta_idx = free_index;
1451 }
1452 if (sta_idx < 0) {
1453 rsi_dbg(ERR_ZONE,
1454 "%s: Some problem reaching here...\n",
1455 __func__);
1456 status = -EINVAL;
1457 goto unlock;
1458 }
1459 rsta = &common->stations[sta_idx];
1460 rsta->sta = sta;
1461 rsta->sta_id = sta_idx;
1462 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1463 rsta->start_tx_aggr[cnt] = false;
1464 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1465 rsta->seq_start[cnt] = 0;
1466 if (!sta_exist) {
1467 rsi_dbg(INFO_ZONE, "New Station\n");
1468
1469 /* Send peer notify to device */
1470 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1471 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1472 sta->addr, sta->wme, sta->aid,
1473 sta, sta_idx, 0, vif);
1474
1475 if (common->key) {
1476 struct ieee80211_key_conf *key = common->key;
1477
1478 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1479 (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1480 rsi_hal_load_key(adapter->priv,
1481 key->key,
1482 key->keylen,
1483 RSI_PAIRWISE_KEY,
1484 key->keyidx,
1485 key->cipher,
1486 sta_idx,
1487 vif);
1488 }
1489
1490 common->num_stations++;
1491 }
1492 }
1493
1494 if ((vif->type == NL80211_IFTYPE_STATION) ||
1495 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1496 common->bitrate_mask[common->band] = sta->deflink.supp_rates[common->band];
1497 common->vif_info[0].is_ht = sta->deflink.ht_cap.ht_supported;
1498 if (sta->deflink.ht_cap.ht_supported) {
1499 common->bitrate_mask[NL80211_BAND_2GHZ] =
1500 sta->deflink.supp_rates[NL80211_BAND_2GHZ];
1501 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1502 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1503 common->vif_info[0].sgi = true;
1504 ieee80211_start_tx_ba_session(sta, 0, 0);
1505 }
1506 }
1507
1508 unlock:
1509 mutex_unlock(&common->mutex);
1510
1511 return status;
1512 }
1513
1514 /**
1515 * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1516 * getting disconnected.
1517 * @hw: Pointer to the ieee80211_hw structure.
1518 * @vif: Pointer to the ieee80211_vif structure.
1519 * @sta: Pointer to the ieee80211_sta structure.
1520 *
1521 * Return: 0 on success, negative error codes on failure.
1522 */
rsi_mac80211_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1523 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1524 struct ieee80211_vif *vif,
1525 struct ieee80211_sta *sta)
1526 {
1527 struct rsi_hw *adapter = hw->priv;
1528 struct rsi_common *common = adapter->priv;
1529 struct ieee80211_bss_conf *bss = &vif->bss_conf;
1530 struct rsi_sta *rsta;
1531
1532 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1533
1534 mutex_lock(&common->mutex);
1535
1536 if ((vif->type == NL80211_IFTYPE_AP) ||
1537 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1538 u8 sta_idx, cnt;
1539
1540 /* Send peer notify to device */
1541 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1542 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1543 rsta = &common->stations[sta_idx];
1544
1545 if (!rsta->sta)
1546 continue;
1547 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1548 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1549 sta->addr, sta->wme,
1550 sta->aid, sta, sta_idx,
1551 0, vif);
1552 rsta->sta = NULL;
1553 rsta->sta_id = -1;
1554 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1555 rsta->start_tx_aggr[cnt] = false;
1556 if (common->num_stations > 0)
1557 common->num_stations--;
1558 break;
1559 }
1560 }
1561 if (sta_idx >= common->max_stations)
1562 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1563 }
1564
1565 if ((vif->type == NL80211_IFTYPE_STATION) ||
1566 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1567 /* Resetting all the fields to default values */
1568 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1569 bss->qos = sta->wme;
1570 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1571 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1572 common->vif_info[0].is_ht = false;
1573 common->vif_info[0].sgi = false;
1574 common->vif_info[0].seq_start = 0;
1575 common->secinfo.ptk_cipher = 0;
1576 common->secinfo.gtk_cipher = 0;
1577 if (!common->iface_down)
1578 rsi_send_rx_filter_frame(common, 0);
1579 }
1580 mutex_unlock(&common->mutex);
1581
1582 return 0;
1583 }
1584
1585 /**
1586 * rsi_mac80211_set_antenna() - This function is used to configure
1587 * tx and rx antennas.
1588 * @hw: Pointer to the ieee80211_hw structure.
1589 * @radio_idx: Radio index
1590 * @tx_ant: Bitmap for tx antenna
1591 * @rx_ant: Bitmap for rx antenna
1592 *
1593 * Return: 0 on success, Negative error code on failure.
1594 */
rsi_mac80211_set_antenna(struct ieee80211_hw * hw,int radio_idx,u32 tx_ant,u32 rx_ant)1595 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1596 int radio_idx,
1597 u32 tx_ant, u32 rx_ant)
1598 {
1599 struct rsi_hw *adapter = hw->priv;
1600 struct rsi_common *common = adapter->priv;
1601 u8 antenna = 0;
1602
1603 if (tx_ant > 1 || rx_ant > 1) {
1604 rsi_dbg(ERR_ZONE,
1605 "Invalid antenna selection (tx: %d, rx:%d)\n",
1606 tx_ant, rx_ant);
1607 rsi_dbg(ERR_ZONE,
1608 "Use 0 for int_ant, 1 for ext_ant\n");
1609 return -EINVAL;
1610 }
1611
1612 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1613 __func__, tx_ant, rx_ant);
1614
1615 mutex_lock(&common->mutex);
1616
1617 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1618 if (common->ant_in_use != antenna)
1619 if (rsi_set_antenna(common, antenna))
1620 goto fail_set_antenna;
1621
1622 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1623 tx_ant ? "UFL" : "INT");
1624
1625 common->ant_in_use = antenna;
1626
1627 mutex_unlock(&common->mutex);
1628
1629 return 0;
1630
1631 fail_set_antenna:
1632 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1633 mutex_unlock(&common->mutex);
1634 return -EINVAL;
1635 }
1636
1637 /**
1638 * rsi_mac80211_get_antenna() - This function is used to configure
1639 * tx and rx antennas.
1640 *
1641 * @hw: Pointer to the ieee80211_hw structure.
1642 * @radio_idx: Radio index
1643 * @tx_ant: Bitmap for tx antenna
1644 * @rx_ant: Bitmap for rx antenna
1645 *
1646 * Return: 0 on success, negative error codes on failure.
1647 */
rsi_mac80211_get_antenna(struct ieee80211_hw * hw,int radio_idx,u32 * tx_ant,u32 * rx_ant)1648 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1649 int radio_idx,
1650 u32 *tx_ant, u32 *rx_ant)
1651 {
1652 struct rsi_hw *adapter = hw->priv;
1653 struct rsi_common *common = adapter->priv;
1654
1655 mutex_lock(&common->mutex);
1656
1657 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1658 *rx_ant = 0;
1659
1660 mutex_unlock(&common->mutex);
1661
1662 return 0;
1663 }
1664
rsi_map_region_code(enum nl80211_dfs_regions region_code)1665 static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1666 {
1667 switch (region_code) {
1668 case NL80211_DFS_FCC:
1669 return RSI_REGION_FCC;
1670 case NL80211_DFS_ETSI:
1671 return RSI_REGION_ETSI;
1672 case NL80211_DFS_JP:
1673 return RSI_REGION_TELEC;
1674 case NL80211_DFS_UNSET:
1675 return RSI_REGION_WORLD;
1676 }
1677 return RSI_REGION_WORLD;
1678 }
1679
rsi_reg_notify(struct wiphy * wiphy,struct regulatory_request * request)1680 static void rsi_reg_notify(struct wiphy *wiphy,
1681 struct regulatory_request *request)
1682 {
1683 struct ieee80211_supported_band *sband;
1684 struct ieee80211_channel *ch;
1685 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1686 struct rsi_hw * adapter = hw->priv;
1687 struct rsi_common *common = adapter->priv;
1688 int i;
1689
1690 mutex_lock(&common->mutex);
1691
1692 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1693 request->alpha2, request->dfs_region);
1694
1695 if (common->num_supp_bands > 1) {
1696 sband = wiphy->bands[NL80211_BAND_5GHZ];
1697
1698 for (i = 0; i < sband->n_channels; i++) {
1699 ch = &sband->channels[i];
1700 if (ch->flags & IEEE80211_CHAN_DISABLED)
1701 continue;
1702
1703 if (ch->flags & IEEE80211_CHAN_RADAR)
1704 ch->flags |= IEEE80211_CHAN_NO_IR;
1705 }
1706 }
1707 adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1708 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1709
1710 adapter->country[0] = request->alpha2[0];
1711 adapter->country[1] = request->alpha2[1];
1712
1713 mutex_unlock(&common->mutex);
1714 }
1715
rsi_mac80211_rfkill_poll(struct ieee80211_hw * hw)1716 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1717 {
1718 struct rsi_hw *adapter = hw->priv;
1719 struct rsi_common *common = adapter->priv;
1720
1721 mutex_lock(&common->mutex);
1722 if (common->fsm_state != FSM_MAC_INIT_DONE)
1723 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1724 else
1725 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1726 mutex_unlock(&common->mutex);
1727 }
1728
rsi_resume_conn_channel(struct rsi_common * common)1729 static void rsi_resume_conn_channel(struct rsi_common *common)
1730 {
1731 struct rsi_hw *adapter = common->priv;
1732 struct ieee80211_vif *vif;
1733 int cnt;
1734
1735 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1736 vif = adapter->vifs[cnt];
1737 if (!vif)
1738 continue;
1739
1740 if ((vif->type == NL80211_IFTYPE_AP) ||
1741 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1742 rsi_switch_channel(adapter, vif);
1743 break;
1744 }
1745 if (((vif->type == NL80211_IFTYPE_STATION) ||
1746 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1747 vif->cfg.assoc) {
1748 rsi_switch_channel(adapter, vif);
1749 break;
1750 }
1751 }
1752 }
1753
rsi_roc_timeout(struct timer_list * t)1754 void rsi_roc_timeout(struct timer_list *t)
1755 {
1756 struct rsi_common *common = timer_container_of(common, t, roc_timer);
1757
1758 rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1759
1760 mutex_lock(&common->mutex);
1761 ieee80211_remain_on_channel_expired(common->priv->hw);
1762
1763 if (timer_pending(&common->roc_timer))
1764 timer_delete(&common->roc_timer);
1765
1766 rsi_resume_conn_channel(common);
1767 mutex_unlock(&common->mutex);
1768 }
1769
rsi_mac80211_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * chan,int duration,enum ieee80211_roc_type type)1770 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1771 struct ieee80211_channel *chan, int duration,
1772 enum ieee80211_roc_type type)
1773 {
1774 struct rsi_hw *adapter = hw->priv;
1775 struct rsi_common *common = adapter->priv;
1776 int status = 0;
1777
1778 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1779
1780 mutex_lock(&common->mutex);
1781 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1782 __func__, chan->hw_value, duration);
1783
1784 if (timer_pending(&common->roc_timer)) {
1785 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1786 timer_delete(&common->roc_timer);
1787 }
1788 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1789 add_timer(&common->roc_timer);
1790
1791 /* Configure band */
1792 if (rsi_band_check(common, chan)) {
1793 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1794 status = -EINVAL;
1795 goto out;
1796 }
1797
1798 /* Configure channel */
1799 if (rsi_set_channel(common, chan)) {
1800 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1801 status = -EINVAL;
1802 goto out;
1803 }
1804
1805 common->roc_vif = vif;
1806 ieee80211_ready_on_channel(hw);
1807 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1808 __func__, chan->hw_value);
1809
1810 out:
1811 mutex_unlock(&common->mutex);
1812
1813 return status;
1814 }
1815
rsi_mac80211_cancel_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1816 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw,
1817 struct ieee80211_vif *vif)
1818 {
1819 struct rsi_hw *adapter = hw->priv;
1820 struct rsi_common *common = adapter->priv;
1821
1822 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1823
1824 mutex_lock(&common->mutex);
1825 if (!timer_pending(&common->roc_timer)) {
1826 mutex_unlock(&common->mutex);
1827 return 0;
1828 }
1829
1830 timer_delete(&common->roc_timer);
1831
1832 rsi_resume_conn_channel(common);
1833 mutex_unlock(&common->mutex);
1834
1835 return 0;
1836 }
1837
1838 #ifdef CONFIG_PM
1839 static const struct wiphy_wowlan_support rsi_wowlan_support = {
1840 .flags = WIPHY_WOWLAN_ANY |
1841 WIPHY_WOWLAN_MAGIC_PKT |
1842 WIPHY_WOWLAN_DISCONNECT |
1843 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
1844 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1845 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1846 WIPHY_WOWLAN_4WAY_HANDSHAKE,
1847 };
1848
rsi_wow_map_triggers(struct rsi_common * common,struct cfg80211_wowlan * wowlan)1849 static u16 rsi_wow_map_triggers(struct rsi_common *common,
1850 struct cfg80211_wowlan *wowlan)
1851 {
1852 u16 wow_triggers = 0;
1853
1854 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1855
1856 if (wowlan->any)
1857 wow_triggers |= RSI_WOW_ANY;
1858 if (wowlan->magic_pkt)
1859 wow_triggers |= RSI_WOW_MAGIC_PKT;
1860 if (wowlan->disconnect)
1861 wow_triggers |= RSI_WOW_DISCONNECT;
1862 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1863 wowlan->four_way_handshake)
1864 wow_triggers |= RSI_WOW_GTK_REKEY;
1865
1866 return wow_triggers;
1867 }
1868
rsi_config_wowlan(struct rsi_hw * adapter,struct cfg80211_wowlan * wowlan)1869 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1870 {
1871 struct rsi_common *common = adapter->priv;
1872 struct ieee80211_vif *vif = adapter->vifs[0];
1873 u16 triggers = 0;
1874 u16 rx_filter_word = 0;
1875
1876 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1877
1878 if (!vif)
1879 return -EINVAL;
1880
1881 if (WARN_ON(!wowlan)) {
1882 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1883 return -EINVAL;
1884 }
1885
1886 common->wow_flags |= RSI_WOW_ENABLED;
1887 triggers = rsi_wow_map_triggers(common, wowlan);
1888 if (!triggers) {
1889 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1890 return -EINVAL;
1891 }
1892 if (!vif->cfg.assoc) {
1893 rsi_dbg(ERR_ZONE,
1894 "Cannot configure WoWLAN (Station not connected)\n");
1895 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1896 return 0;
1897 }
1898 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1899
1900 if (common->coex_mode > 1)
1901 rsi_disable_ps(adapter, adapter->vifs[0]);
1902
1903 rsi_send_wowlan_request(common, triggers, 1);
1904
1905 /**
1906 * Increase the beacon_miss threshold & keep-alive timers in
1907 * vap_update frame
1908 */
1909 rsi_send_vap_dynamic_update(common);
1910
1911 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1912 rsi_send_rx_filter_frame(common, rx_filter_word);
1913
1914 return 0;
1915 }
1916 EXPORT_SYMBOL(rsi_config_wowlan);
1917
rsi_mac80211_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1918 static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1919 struct cfg80211_wowlan *wowlan)
1920 {
1921 struct rsi_hw *adapter = hw->priv;
1922 struct rsi_common *common = adapter->priv;
1923
1924 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1925 mutex_lock(&common->mutex);
1926 if (rsi_config_wowlan(adapter, wowlan)) {
1927 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1928 mutex_unlock(&common->mutex);
1929 return 1;
1930 }
1931 mutex_unlock(&common->mutex);
1932
1933 return 0;
1934 }
1935
rsi_mac80211_resume(struct ieee80211_hw * hw)1936 static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1937 {
1938 u16 rx_filter_word = 0;
1939 struct rsi_hw *adapter = hw->priv;
1940 struct rsi_common *common = adapter->priv;
1941
1942 common->wow_flags = 0;
1943
1944 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1945
1946 if (common->hibernate_resume) {
1947 common->mac_ops_resumed = true;
1948 /* Device need a complete restart of all MAC operations.
1949 * returning 1 will serve this purpose.
1950 */
1951 return 1;
1952 }
1953
1954 mutex_lock(&common->mutex);
1955 rsi_send_wowlan_request(common, 0, 0);
1956
1957 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1958 ALLOW_MGMT_ASSOC_PEER);
1959 rsi_send_rx_filter_frame(common, rx_filter_word);
1960 mutex_unlock(&common->mutex);
1961
1962 return 0;
1963 }
1964
1965 #endif
1966
1967 static const struct ieee80211_ops mac80211_ops = {
1968 .add_chanctx = ieee80211_emulate_add_chanctx,
1969 .remove_chanctx = ieee80211_emulate_remove_chanctx,
1970 .change_chanctx = ieee80211_emulate_change_chanctx,
1971 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
1972 .tx = rsi_mac80211_tx,
1973 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
1974 .start = rsi_mac80211_start,
1975 .stop = rsi_mac80211_stop,
1976 .add_interface = rsi_mac80211_add_interface,
1977 .remove_interface = rsi_mac80211_remove_interface,
1978 .config = rsi_mac80211_config,
1979 .bss_info_changed = rsi_mac80211_bss_info_changed,
1980 .conf_tx = rsi_mac80211_conf_tx,
1981 .configure_filter = rsi_mac80211_conf_filter,
1982 .set_key = rsi_mac80211_set_key,
1983 .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1984 .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1985 .ampdu_action = rsi_mac80211_ampdu_action,
1986 .sta_add = rsi_mac80211_sta_add,
1987 .sta_remove = rsi_mac80211_sta_remove,
1988 .set_antenna = rsi_mac80211_set_antenna,
1989 .get_antenna = rsi_mac80211_get_antenna,
1990 .rfkill_poll = rsi_mac80211_rfkill_poll,
1991 .remain_on_channel = rsi_mac80211_roc,
1992 .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1993 #ifdef CONFIG_PM
1994 .suspend = rsi_mac80211_suspend,
1995 .resume = rsi_mac80211_resume,
1996 #endif
1997 .hw_scan = rsi_mac80211_hw_scan_start,
1998 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan,
1999 };
2000
2001 /**
2002 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
2003 * @common: Pointer to the driver private structure.
2004 *
2005 * Return: 0 on success, negative error codes on failure.
2006 */
rsi_mac80211_attach(struct rsi_common * common)2007 int rsi_mac80211_attach(struct rsi_common *common)
2008 {
2009 int status = 0;
2010 struct ieee80211_hw *hw = NULL;
2011 struct wiphy *wiphy = NULL;
2012 struct rsi_hw *adapter = common->priv;
2013 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
2014
2015 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
2016
2017 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
2018 if (!hw) {
2019 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
2020 return -ENOMEM;
2021 }
2022
2023 wiphy = hw->wiphy;
2024
2025 SET_IEEE80211_DEV(hw, adapter->device);
2026
2027 hw->priv = adapter;
2028 adapter->hw = hw;
2029
2030 ieee80211_hw_set(hw, SIGNAL_DBM);
2031 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
2032 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2033 ieee80211_hw_set(hw, SUPPORTS_PS);
2034 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
2035
2036 hw->queues = MAX_HW_QUEUES;
2037 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
2038
2039 hw->max_rates = 1;
2040 hw->max_rate_tries = MAX_RETRIES;
2041 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
2042 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
2043
2044 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS;
2045 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS;
2046 hw->rate_control_algorithm = "AARF";
2047
2048 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
2049 ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
2050
2051 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2052 BIT(NL80211_IFTYPE_AP) |
2053 BIT(NL80211_IFTYPE_P2P_DEVICE) |
2054 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2055 BIT(NL80211_IFTYPE_P2P_GO);
2056
2057 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2058 wiphy->retry_short = RETRY_SHORT;
2059 wiphy->retry_long = RETRY_LONG;
2060 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
2061 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
2062 wiphy->flags = 0;
2063
2064 wiphy->available_antennas_rx = 1;
2065 wiphy->available_antennas_tx = 1;
2066
2067 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
2068 if (status)
2069 return status;
2070 wiphy->bands[NL80211_BAND_2GHZ] =
2071 &adapter->sbands[NL80211_BAND_2GHZ];
2072 if (common->num_supp_bands > 1) {
2073 status = rsi_register_rates_channels(adapter,
2074 NL80211_BAND_5GHZ);
2075 if (status)
2076 return status;
2077 wiphy->bands[NL80211_BAND_5GHZ] =
2078 &adapter->sbands[NL80211_BAND_5GHZ];
2079 }
2080
2081 /* AP Parameters */
2082 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
2083 common->max_stations = wiphy->max_ap_assoc_sta;
2084 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
2085 hw->sta_data_size = sizeof(struct rsi_sta);
2086
2087 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS;
2088 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN;
2089 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
2090 wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
2091 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
2092 wiphy->reg_notifier = rsi_reg_notify;
2093
2094 #ifdef CONFIG_PM
2095 wiphy->wowlan = &rsi_wowlan_support;
2096 #endif
2097
2098 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2099
2100 /* Wi-Fi direct parameters */
2101 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2102 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
2103 wiphy->max_remain_on_channel_duration = 10000;
2104 hw->max_listen_interval = 10;
2105 wiphy->iface_combinations = rsi_iface_combinations;
2106 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
2107
2108 if (common->coex_mode > 1)
2109 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2110
2111 status = ieee80211_register_hw(hw);
2112 if (status)
2113 return status;
2114
2115 return rsi_init_dbgfs(adapter);
2116 }
2117