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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
24static 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
55static 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
106struct 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
121const 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
126static 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
143static 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
160static 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
176bool 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 */
193static 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
233static 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
274static 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 */
302void 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}
326EXPORT_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 */
336void 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 */
368static 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 */
390static 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 *
414 * Return: None.
415 */
416static void rsi_mac80211_stop(struct ieee80211_hw *hw)
417{
418 struct rsi_hw *adapter = hw->priv;
419 struct rsi_common *common = adapter->priv;
420
421 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
422 mutex_lock(&common->mutex);
423 common->iface_down = true;
424 wiphy_rfkill_stop_polling(hw->wiphy);
425
426 /* Block all rx frames */
427 rsi_send_rx_filter_frame(common, 0xffff);
428
429 mutex_unlock(&common->mutex);
430}
431
432static int rsi_map_intf_mode(enum nl80211_iftype vif_type)
433{
434 switch (vif_type) {
435 case NL80211_IFTYPE_STATION:
436 return RSI_OPMODE_STA;
437 case NL80211_IFTYPE_AP:
438 return RSI_OPMODE_AP;
439 case NL80211_IFTYPE_P2P_DEVICE:
440 return RSI_OPMODE_P2P_CLIENT;
441 case NL80211_IFTYPE_P2P_CLIENT:
442 return RSI_OPMODE_P2P_CLIENT;
443 case NL80211_IFTYPE_P2P_GO:
444 return RSI_OPMODE_P2P_GO;
445 default:
446 return RSI_OPMODE_UNSUPPORTED;
447 }
448}
449
450/**
451 * rsi_mac80211_add_interface() - This function is called when a netdevice
452 * attached to the hardware is enabled.
453 * @hw: Pointer to the ieee80211_hw structure.
454 * @vif: Pointer to the ieee80211_vif structure.
455 *
456 * Return: ret: 0 on success, negative error code on failure.
457 */
458static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
459 struct ieee80211_vif *vif)
460{
461 struct rsi_hw *adapter = hw->priv;
462 struct rsi_common *common = adapter->priv;
463 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
464 enum opmode intf_mode;
465 enum vap_status vap_status;
466 int vap_idx = -1, i;
467
468 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
469 mutex_lock(&common->mutex);
470
471 intf_mode = rsi_map_intf_mode(vif->type);
472 if (intf_mode == RSI_OPMODE_UNSUPPORTED) {
473 rsi_dbg(ERR_ZONE,
474 "%s: Interface type %d not supported\n", __func__,
475 vif->type);
476 mutex_unlock(&common->mutex);
477 return -EOPNOTSUPP;
478 }
479 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) ||
480 (vif->type == NL80211_IFTYPE_P2P_CLIENT) ||
481 (vif->type == NL80211_IFTYPE_P2P_GO))
482 common->p2p_enabled = true;
483
484 /* Get free vap index */
485 for (i = 0; i < RSI_MAX_VIFS; i++) {
486 if (!adapter->vifs[i] ||
487 !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) {
488 vap_idx = i;
489 break;
490 }
491 }
492 if (vap_idx < 0) {
493 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n");
494 mutex_unlock(&common->mutex);
495 return -EOPNOTSUPP;
496 }
497 vif_info->vap_id = vap_idx;
498 adapter->vifs[vap_idx] = vif;
499 adapter->sc_nvifs++;
500 vap_status = VAP_ADD;
501
502 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr,
503 vif_info->vap_id, vap_status)) {
504 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n");
505 mutex_unlock(&common->mutex);
506 return -EINVAL;
507 }
508
509 if ((vif->type == NL80211_IFTYPE_AP) ||
510 (vif->type == NL80211_IFTYPE_P2P_GO)) {
511 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS);
512 for (i = 0; i < common->max_stations; i++)
513 common->stations[i].sta = NULL;
514 }
515
516 mutex_unlock(&common->mutex);
517
518 return 0;
519}
520
521/**
522 * rsi_mac80211_remove_interface() - This function notifies driver that an
523 * interface is going down.
524 * @hw: Pointer to the ieee80211_hw structure.
525 * @vif: Pointer to the ieee80211_vif structure.
526 *
527 * Return: None.
528 */
529static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
530 struct ieee80211_vif *vif)
531{
532 struct rsi_hw *adapter = hw->priv;
533 struct rsi_common *common = adapter->priv;
534 enum opmode opmode;
535 int i;
536
537 rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
538
539 mutex_lock(&common->mutex);
540
541 if (adapter->sc_nvifs <= 0) {
542 mutex_unlock(&common->mutex);
543 return;
544 }
545
546 opmode = rsi_map_intf_mode(vif->type);
547 if (opmode == RSI_OPMODE_UNSUPPORTED) {
548 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
549 mutex_unlock(&common->mutex);
550 return;
551 }
552 for (i = 0; i < RSI_MAX_VIFS; i++) {
553 if (!adapter->vifs[i])
554 continue;
555 if (vif == adapter->vifs[i]) {
556 rsi_set_vap_capabilities(common, opmode, vif->addr,
557 i, VAP_DELETE);
558 adapter->sc_nvifs--;
559 adapter->vifs[i] = NULL;
560 }
561 }
562 mutex_unlock(&common->mutex);
563}
564
565/**
566 * rsi_channel_change() - This function is a performs the checks
567 * required for changing a channel and sets
568 * the channel accordingly.
569 * @hw: Pointer to the ieee80211_hw structure.
570 *
571 * Return: 0 on success, negative error code on failure.
572 */
573static int rsi_channel_change(struct ieee80211_hw *hw)
574{
575 struct rsi_hw *adapter = hw->priv;
576 struct rsi_common *common = adapter->priv;
577 int status = -EOPNOTSUPP;
578 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
579 u16 channel = curchan->hw_value;
580 struct ieee80211_vif *vif;
581 bool assoc = false;
582 int i;
583
584 rsi_dbg(INFO_ZONE,
585 "%s: Set channel: %d MHz type: %d channel_no %d\n",
586 __func__, curchan->center_freq,
587 curchan->flags, channel);
588
589 for (i = 0; i < RSI_MAX_VIFS; i++) {
590 vif = adapter->vifs[i];
591 if (!vif)
592 continue;
593 if (vif->type == NL80211_IFTYPE_STATION) {
594 if (vif->cfg.assoc) {
595 assoc = true;
596 break;
597 }
598 }
599 }
600 if (assoc) {
601 if (!common->hw_data_qs_blocked &&
602 (rsi_get_connected_channel(vif) != channel)) {
603 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
604 if (!rsi_send_block_unblock_frame(common, true))
605 common->hw_data_qs_blocked = true;
606 }
607 }
608
609 status = rsi_band_check(common, curchan);
610 if (!status)
611 status = rsi_set_channel(adapter->priv, curchan);
612
613 if (assoc) {
614 if (common->hw_data_qs_blocked &&
615 (rsi_get_connected_channel(vif) == channel)) {
616 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
617 if (!rsi_send_block_unblock_frame(common, false))
618 common->hw_data_qs_blocked = false;
619 }
620 }
621
622 return status;
623}
624
625/**
626 * rsi_config_power() - This function configures tx power to device
627 * @hw: Pointer to the ieee80211_hw structure.
628 *
629 * Return: 0 on success, negative error code on failure.
630 */
631static int rsi_config_power(struct ieee80211_hw *hw)
632{
633 struct rsi_hw *adapter = hw->priv;
634 struct rsi_common *common = adapter->priv;
635 struct ieee80211_conf *conf = &hw->conf;
636
637 if (adapter->sc_nvifs <= 0) {
638 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
639 return -EINVAL;
640 }
641
642 rsi_dbg(INFO_ZONE,
643 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
644
645 if (conf->power_level == common->tx_power)
646 return 0;
647
648 common->tx_power = conf->power_level;
649
650 return rsi_send_radio_params_update(common);
651}
652
653/**
654 * rsi_mac80211_config() - This function is a handler for configuration
655 * requests. The stack calls this function to
656 * change hardware configuration, e.g., channel.
657 * @hw: Pointer to the ieee80211_hw structure.
658 * @changed: Changed flags set.
659 *
660 * Return: 0 on success, negative error code on failure.
661 */
662static int rsi_mac80211_config(struct ieee80211_hw *hw,
663 u32 changed)
664{
665 struct rsi_hw *adapter = hw->priv;
666 struct rsi_common *common = adapter->priv;
667 struct ieee80211_conf *conf = &hw->conf;
668 int status = -EOPNOTSUPP;
669
670 mutex_lock(&common->mutex);
671
672 if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
673 status = rsi_channel_change(hw);
674
675 /* tx power */
676 if (changed & IEEE80211_CONF_CHANGE_POWER) {
677 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
678 status = rsi_config_power(hw);
679 }
680
681 /* Power save parameters */
682 if ((changed & IEEE80211_CONF_CHANGE_PS) &&
683 !common->mac_ops_resumed) {
684 struct ieee80211_vif *vif, *sta_vif = NULL;
685 unsigned long flags;
686 int i, set_ps = 1;
687
688 for (i = 0; i < RSI_MAX_VIFS; i++) {
689 vif = adapter->vifs[i];
690 if (!vif)
691 continue;
692 /* Don't go to power save if AP vap exists */
693 if ((vif->type == NL80211_IFTYPE_AP) ||
694 (vif->type == NL80211_IFTYPE_P2P_GO)) {
695 set_ps = 0;
696 break;
697 }
698 if ((vif->type == NL80211_IFTYPE_STATION ||
699 vif->type == NL80211_IFTYPE_P2P_CLIENT) &&
700 (!sta_vif || vif->cfg.assoc))
701 sta_vif = vif;
702 }
703 if (set_ps && sta_vif) {
704 spin_lock_irqsave(&adapter->ps_lock, flags);
705 if (conf->flags & IEEE80211_CONF_PS)
706 rsi_enable_ps(adapter, sta_vif);
707 else
708 rsi_disable_ps(adapter, sta_vif);
709 spin_unlock_irqrestore(&adapter->ps_lock, flags);
710 }
711 }
712
713 /* RTS threshold */
714 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
715 rsi_dbg(INFO_ZONE, "RTS threshold\n");
716 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
717 rsi_dbg(INFO_ZONE,
718 "%s: Sending vap updates....\n", __func__);
719 status = rsi_send_vap_dynamic_update(common);
720 }
721 }
722 mutex_unlock(&common->mutex);
723
724 return status;
725}
726
727/**
728 * rsi_get_connected_channel() - This function is used to get the current
729 * connected channel number.
730 * @vif: Pointer to the ieee80211_vif structure.
731 *
732 * Return: Current connected AP's channel number is returned.
733 */
734u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
735{
736 struct ieee80211_bss_conf *bss;
737 struct ieee80211_channel *channel;
738
739 if (!vif)
740 return 0;
741
742 bss = &vif->bss_conf;
743 channel = bss->chandef.chan;
744
745 if (!channel)
746 return 0;
747
748 return channel->hw_value;
749}
750
751static void rsi_switch_channel(struct rsi_hw *adapter,
752 struct ieee80211_vif *vif)
753{
754 struct rsi_common *common = adapter->priv;
755 struct ieee80211_channel *channel;
756
757 if (common->iface_down)
758 return;
759 if (!vif)
760 return;
761
762 channel = vif->bss_conf.chandef.chan;
763
764 if (!channel)
765 return;
766
767 rsi_band_check(common, channel);
768 rsi_set_channel(common, channel);
769 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
770}
771
772/**
773 * rsi_mac80211_bss_info_changed() - This function is a handler for config
774 * requests related to BSS parameters that
775 * may vary during BSS's lifespan.
776 * @hw: Pointer to the ieee80211_hw structure.
777 * @vif: Pointer to the ieee80211_vif structure.
778 * @bss_conf: Pointer to the ieee80211_bss_conf structure.
779 * @changed: Changed flags set.
780 *
781 * Return: None.
782 */
783static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
784 struct ieee80211_vif *vif,
785 struct ieee80211_bss_conf *bss_conf,
786 u64 changed)
787{
788 struct rsi_hw *adapter = hw->priv;
789 struct rsi_common *common = adapter->priv;
790 struct ieee80211_bss_conf *bss = &vif->bss_conf;
791 struct ieee80211_conf *conf = &hw->conf;
792 u16 rx_filter_word = 0;
793
794 mutex_lock(&common->mutex);
795 if (changed & BSS_CHANGED_ASSOC) {
796 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
797 __func__, vif->cfg.assoc);
798 if (vif->cfg.assoc) {
799 /* Send the RX filter frame */
800 rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
801 ALLOW_CTRL_ASSOC_PEER |
802 ALLOW_MGMT_ASSOC_PEER);
803 rsi_send_rx_filter_frame(common, rx_filter_word);
804 }
805 rsi_inform_bss_status(common,
806 RSI_OPMODE_STA,
807 vif->cfg.assoc,
808 bss_conf->bssid,
809 bss_conf->qos,
810 vif->cfg.aid,
811 NULL, 0,
812 bss_conf->assoc_capability, vif);
813 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
814 adapter->ps_info.listen_interval = conf->listen_interval;
815
816 /* If U-APSD is updated, send ps parameters to firmware */
817 if (vif->cfg.assoc) {
818 if (common->uapsd_bitmap) {
819 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
820 rsi_conf_uapsd(adapter, vif);
821 }
822 } else {
823 common->uapsd_bitmap = 0;
824 }
825 }
826
827 if (changed & BSS_CHANGED_CQM) {
828 common->cqm_info.last_cqm_event_rssi = 0;
829 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
830 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
831 rsi_dbg(INFO_ZONE, "RSSI threshold & hysteresis are: %d %d\n",
832 common->cqm_info.rssi_thold,
833 common->cqm_info.rssi_hyst);
834 }
835
836 if (changed & BSS_CHANGED_BEACON_INT) {
837 rsi_dbg(INFO_ZONE, "%s: Changed Beacon interval: %d\n",
838 __func__, bss_conf->beacon_int);
839 if (common->beacon_interval != bss->beacon_int) {
840 common->beacon_interval = bss->beacon_int;
841 if (vif->type == NL80211_IFTYPE_AP) {
842 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
843
844 rsi_set_vap_capabilities(common, RSI_OPMODE_AP,
845 vif->addr, vif_info->vap_id,
846 VAP_UPDATE);
847 }
848 }
849 adapter->ps_info.listen_interval =
850 bss->beacon_int * adapter->ps_info.num_bcns_per_lis_int;
851 }
852
853 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
854 ((vif->type == NL80211_IFTYPE_AP) ||
855 (vif->type == NL80211_IFTYPE_P2P_GO))) {
856 if (bss->enable_beacon) {
857 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
858 common->beacon_enabled = 1;
859 } else {
860 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
861 common->beacon_enabled = 0;
862 }
863 }
864
865 mutex_unlock(&common->mutex);
866}
867
868/**
869 * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
870 * @hw: Pointer to the ieee80211_hw structure.
871 * @changed_flags: Changed flags set.
872 * @total_flags: Total initial flags set.
873 * @multicast: Multicast.
874 *
875 * Return: None.
876 */
877static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
878 u32 changed_flags,
879 u32 *total_flags,
880 u64 multicast)
881{
882 /* Not doing much here as of now */
883 *total_flags &= RSI_SUPP_FILTERS;
884}
885
886/**
887 * rsi_mac80211_conf_tx() - This function configures TX queue parameters
888 * (EDCF (aifs, cw_min, cw_max), bursting)
889 * for a hardware TX queue.
890 * @hw: Pointer to the ieee80211_hw structure
891 * @vif: Pointer to the ieee80211_vif structure.
892 * @link_id: the link ID if MLO is used, otherwise 0
893 * @queue: Queue number.
894 * @params: Pointer to ieee80211_tx_queue_params structure.
895 *
896 * Return: 0 on success, negative error code on failure.
897 */
898static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
899 struct ieee80211_vif *vif,
900 unsigned int link_id, u16 queue,
901 const struct ieee80211_tx_queue_params *params)
902{
903 struct rsi_hw *adapter = hw->priv;
904 struct rsi_common *common = adapter->priv;
905 u8 idx = 0;
906
907 if (queue >= IEEE80211_NUM_ACS)
908 return 0;
909
910 rsi_dbg(INFO_ZONE,
911 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
912 __func__, queue, params->aifs,
913 params->cw_min, params->cw_max, params->txop);
914
915 mutex_lock(&common->mutex);
916 /* Map into the way the f/w expects */
917 switch (queue) {
918 case IEEE80211_AC_VO:
919 idx = VO_Q;
920 break;
921 case IEEE80211_AC_VI:
922 idx = VI_Q;
923 break;
924 case IEEE80211_AC_BE:
925 idx = BE_Q;
926 break;
927 case IEEE80211_AC_BK:
928 idx = BK_Q;
929 break;
930 default:
931 idx = BE_Q;
932 break;
933 }
934
935 memcpy(&common->edca_params[idx],
936 params,
937 sizeof(struct ieee80211_tx_queue_params));
938
939 if (params->uapsd)
940 common->uapsd_bitmap |= idx;
941 else
942 common->uapsd_bitmap &= (~idx);
943
944 mutex_unlock(&common->mutex);
945
946 return 0;
947}
948
949/**
950 * rsi_hal_key_config() - This function loads the keys into the firmware.
951 * @hw: Pointer to the ieee80211_hw structure.
952 * @vif: Pointer to the ieee80211_vif structure.
953 * @key: Pointer to the ieee80211_key_conf structure.
954 * @sta: Pointer to the ieee80211_sta structure.
955 *
956 * Return: status: 0 on success, negative error codes on failure.
957 */
958static int rsi_hal_key_config(struct ieee80211_hw *hw,
959 struct ieee80211_vif *vif,
960 struct ieee80211_key_conf *key,
961 struct ieee80211_sta *sta)
962{
963 struct rsi_hw *adapter = hw->priv;
964 struct rsi_sta *rsta = NULL;
965 int status;
966 u8 key_type;
967 s16 sta_id = 0;
968
969 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
970 key_type = RSI_PAIRWISE_KEY;
971 else
972 key_type = RSI_GROUP_KEY;
973
974 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
975 __func__, key->cipher, key_type, key->keylen);
976
977 if ((vif->type == NL80211_IFTYPE_AP) ||
978 (vif->type == NL80211_IFTYPE_P2P_GO)) {
979 if (sta) {
980 rsta = rsi_find_sta(adapter->priv, sta->addr);
981 if (rsta)
982 sta_id = rsta->sta_id;
983 }
984 adapter->priv->key = key;
985 } else {
986 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
987 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
988 status = rsi_hal_load_key(adapter->priv,
989 key->key,
990 key->keylen,
991 RSI_PAIRWISE_KEY,
992 key->keyidx,
993 key->cipher,
994 sta_id,
995 vif);
996 if (status)
997 return status;
998 }
999 }
1000
1001 status = rsi_hal_load_key(adapter->priv,
1002 key->key,
1003 key->keylen,
1004 key_type,
1005 key->keyidx,
1006 key->cipher,
1007 sta_id,
1008 vif);
1009 if (status)
1010 return status;
1011
1012 if (vif->type == NL80211_IFTYPE_STATION &&
1013 (key->cipher == WLAN_CIPHER_SUITE_WEP104 ||
1014 key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
1015 if (!rsi_send_block_unblock_frame(adapter->priv, false))
1016 adapter->priv->hw_data_qs_blocked = false;
1017 }
1018
1019 return 0;
1020}
1021
1022/**
1023 * rsi_mac80211_set_key() - This function sets type of key to be loaded.
1024 * @hw: Pointer to the ieee80211_hw structure.
1025 * @cmd: enum set_key_cmd.
1026 * @vif: Pointer to the ieee80211_vif structure.
1027 * @sta: Pointer to the ieee80211_sta structure.
1028 * @key: Pointer to the ieee80211_key_conf structure.
1029 *
1030 * Return: status: 0 on success, negative error code on failure.
1031 */
1032static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
1033 enum set_key_cmd cmd,
1034 struct ieee80211_vif *vif,
1035 struct ieee80211_sta *sta,
1036 struct ieee80211_key_conf *key)
1037{
1038 struct rsi_hw *adapter = hw->priv;
1039 struct rsi_common *common = adapter->priv;
1040 struct security_info *secinfo = &common->secinfo;
1041 int status;
1042
1043 mutex_lock(&common->mutex);
1044 switch (cmd) {
1045 case SET_KEY:
1046 status = rsi_hal_key_config(hw, vif, key, sta);
1047 if (status) {
1048 mutex_unlock(&common->mutex);
1049 return status;
1050 }
1051
1052 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
1053 secinfo->ptk_cipher = key->cipher;
1054 else
1055 secinfo->gtk_cipher = key->cipher;
1056
1057 key->hw_key_idx = key->keyidx;
1058 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1059
1060 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
1061 break;
1062
1063 case DISABLE_KEY:
1064 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
1065 memset(key, 0, sizeof(struct ieee80211_key_conf));
1066 status = rsi_hal_key_config(hw, vif, key, sta);
1067 break;
1068
1069 default:
1070 status = -EOPNOTSUPP;
1071 break;
1072 }
1073
1074 mutex_unlock(&common->mutex);
1075 return status;
1076}
1077
1078/**
1079 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
1080 * the corresponding mlme_action flag and
1081 * informs the f/w regarding this.
1082 * @hw: Pointer to the ieee80211_hw structure.
1083 * @vif: Pointer to the ieee80211_vif structure.
1084 * @params: Pointer to A-MPDU action parameters
1085 *
1086 * Return: status: 0 on success, negative error code on failure.
1087 */
1088static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
1089 struct ieee80211_vif *vif,
1090 struct ieee80211_ampdu_params *params)
1091{
1092 int status = -EOPNOTSUPP;
1093 struct rsi_hw *adapter = hw->priv;
1094 struct rsi_common *common = adapter->priv;
1095 struct rsi_sta *rsta = NULL;
1096 u16 seq_no = 0, seq_start = 0;
1097 u8 ii = 0;
1098 struct ieee80211_sta *sta = params->sta;
1099 u8 sta_id = 0;
1100 enum ieee80211_ampdu_mlme_action action = params->action;
1101 u16 tid = params->tid;
1102 u16 *ssn = ¶ms->ssn;
1103 u8 buf_size = params->buf_size;
1104
1105 for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1106 if (vif == adapter->vifs[ii])
1107 break;
1108 }
1109
1110 if (ii >= RSI_MAX_VIFS)
1111 return status;
1112
1113 mutex_lock(&common->mutex);
1114
1115 if (ssn != NULL)
1116 seq_no = *ssn;
1117
1118 if ((vif->type == NL80211_IFTYPE_AP) ||
1119 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1120 rsta = rsi_find_sta(common, sta->addr);
1121 if (!rsta) {
1122 rsi_dbg(ERR_ZONE, "No station mapped\n");
1123 status = 0;
1124 goto unlock;
1125 }
1126 sta_id = rsta->sta_id;
1127 }
1128
1129 rsi_dbg(INFO_ZONE,
1130 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1131 __func__, tid, seq_no, buf_size, sta_id);
1132
1133 switch (action) {
1134 case IEEE80211_AMPDU_RX_START:
1135 status = rsi_send_aggregation_params_frame(common,
1136 tid,
1137 seq_no,
1138 buf_size,
1139 STA_RX_ADDBA_DONE,
1140 sta_id);
1141 break;
1142
1143 case IEEE80211_AMPDU_RX_STOP:
1144 status = rsi_send_aggregation_params_frame(common,
1145 tid,
1146 0,
1147 buf_size,
1148 STA_RX_DELBA,
1149 sta_id);
1150 break;
1151
1152 case IEEE80211_AMPDU_TX_START:
1153 if ((vif->type == NL80211_IFTYPE_STATION) ||
1154 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1155 common->vif_info[ii].seq_start = seq_no;
1156 else if ((vif->type == NL80211_IFTYPE_AP) ||
1157 (vif->type == NL80211_IFTYPE_P2P_GO))
1158 rsta->seq_start[tid] = seq_no;
1159 status = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1160 break;
1161
1162 case IEEE80211_AMPDU_TX_STOP_CONT:
1163 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1164 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1165 status = rsi_send_aggregation_params_frame(common,
1166 tid,
1167 seq_no,
1168 buf_size,
1169 STA_TX_DELBA,
1170 sta_id);
1171 if (!status)
1172 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1173 break;
1174
1175 case IEEE80211_AMPDU_TX_OPERATIONAL:
1176 if ((vif->type == NL80211_IFTYPE_STATION) ||
1177 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1178 seq_start = common->vif_info[ii].seq_start;
1179 else if ((vif->type == NL80211_IFTYPE_AP) ||
1180 (vif->type == NL80211_IFTYPE_P2P_GO))
1181 seq_start = rsta->seq_start[tid];
1182 status = rsi_send_aggregation_params_frame(common,
1183 tid,
1184 seq_start,
1185 buf_size,
1186 STA_TX_ADDBA_DONE,
1187 sta_id);
1188 break;
1189
1190 default:
1191 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__);
1192 break;
1193 }
1194
1195unlock:
1196 mutex_unlock(&common->mutex);
1197 return status;
1198}
1199
1200/**
1201 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1202 * @hw: Pointer to the ieee80211_hw structure.
1203 * @value: Rts threshold value.
1204 *
1205 * Return: 0 on success.
1206 */
1207static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1208 u32 value)
1209{
1210 struct rsi_hw *adapter = hw->priv;
1211 struct rsi_common *common = adapter->priv;
1212
1213 mutex_lock(&common->mutex);
1214 common->rts_threshold = value;
1215 mutex_unlock(&common->mutex);
1216
1217 return 0;
1218}
1219
1220/**
1221 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1222 * @hw: Pointer to the ieee80211_hw structure
1223 * @vif: Pointer to the ieee80211_vif structure.
1224 * @mask: Pointer to the cfg80211_bitrate_mask structure.
1225 *
1226 * Return: 0 on success.
1227 */
1228static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1229 struct ieee80211_vif *vif,
1230 const struct cfg80211_bitrate_mask *mask)
1231{
1232 const unsigned int mcs_offset = ARRAY_SIZE(rsi_rates);
1233 struct rsi_hw *adapter = hw->priv;
1234 struct rsi_common *common = adapter->priv;
1235 int i;
1236
1237 mutex_lock(&common->mutex);
1238
1239 for (i = 0; i < ARRAY_SIZE(common->rate_config); i++) {
1240 struct rsi_rate_config *cfg = &common->rate_config[i];
1241 u32 bm;
1242
1243 bm = mask->control[i].legacy | (mask->control[i].ht_mcs[0] << mcs_offset);
1244 if (hweight32(bm) == 1) { /* single rate */
1245 int rate_index = ffs(bm) - 1;
1246
1247 if (rate_index < mcs_offset)
1248 cfg->fixed_hw_rate = rsi_rates[rate_index].hw_value;
1249 else
1250 cfg->fixed_hw_rate = rsi_mcsrates[rate_index - mcs_offset];
1251 cfg->fixed_enabled = true;
1252 } else {
1253 cfg->configured_mask = bm;
1254 cfg->fixed_enabled = false;
1255 }
1256 }
1257
1258 mutex_unlock(&common->mutex);
1259
1260 return 0;
1261}
1262
1263/**
1264 * rsi_perform_cqm() - This function performs cqm.
1265 * @common: Pointer to the driver private structure.
1266 * @bssid: pointer to the bssid.
1267 * @rssi: RSSI value.
1268 * @vif: Pointer to the ieee80211_vif structure.
1269 */
1270static void rsi_perform_cqm(struct rsi_common *common,
1271 u8 *bssid,
1272 s8 rssi,
1273 struct ieee80211_vif *vif)
1274{
1275 s8 last_event = common->cqm_info.last_cqm_event_rssi;
1276 int thold = common->cqm_info.rssi_thold;
1277 u32 hyst = common->cqm_info.rssi_hyst;
1278 enum nl80211_cqm_rssi_threshold_event event;
1279
1280 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1281 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1282 else if (rssi > thold &&
1283 (last_event == 0 || rssi > (last_event + hyst)))
1284 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1285 else
1286 return;
1287
1288 common->cqm_info.last_cqm_event_rssi = rssi;
1289 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1290 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1291
1292 return;
1293}
1294
1295/**
1296 * rsi_fill_rx_status() - This function fills rx status in
1297 * ieee80211_rx_status structure.
1298 * @hw: Pointer to the ieee80211_hw structure.
1299 * @skb: Pointer to the socket buffer structure.
1300 * @common: Pointer to the driver private structure.
1301 * @rxs: Pointer to the ieee80211_rx_status structure.
1302 *
1303 * Return: None.
1304 */
1305static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1306 struct sk_buff *skb,
1307 struct rsi_common *common,
1308 struct ieee80211_rx_status *rxs)
1309{
1310 struct rsi_hw *adapter = common->priv;
1311 struct ieee80211_vif *vif;
1312 struct ieee80211_bss_conf *bss = NULL;
1313 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1314 struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1315 struct ieee80211_hdr *hdr;
1316 char rssi = rx_params->rssi;
1317 u8 hdrlen = 0;
1318 u8 channel = rx_params->channel;
1319 s32 freq;
1320 int i;
1321
1322 hdr = ((struct ieee80211_hdr *)(skb->data));
1323 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1324
1325 memset(info, 0, sizeof(struct ieee80211_tx_info));
1326
1327 rxs->signal = -(rssi);
1328
1329 rxs->band = common->band;
1330
1331 freq = ieee80211_channel_to_frequency(channel, rxs->band);
1332
1333 if (freq)
1334 rxs->freq = freq;
1335
1336 if (ieee80211_has_protected(hdr->frame_control)) {
1337 if (rsi_is_cipher_wep(common)) {
1338 memmove(skb->data + 4, skb->data, hdrlen);
1339 skb_pull(skb, 4);
1340 } else {
1341 memmove(skb->data + 8, skb->data, hdrlen);
1342 skb_pull(skb, 8);
1343 rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1344 }
1345 rxs->flag |= RX_FLAG_DECRYPTED;
1346 rxs->flag |= RX_FLAG_IV_STRIPPED;
1347 }
1348
1349 for (i = 0; i < RSI_MAX_VIFS; i++) {
1350 vif = adapter->vifs[i];
1351 if (!vif)
1352 continue;
1353 if (vif->type == NL80211_IFTYPE_STATION) {
1354 bss = &vif->bss_conf;
1355 break;
1356 }
1357 }
1358 if (!bss)
1359 return;
1360 /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1361 if (vif->cfg.assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1362 if (ieee80211_is_beacon(hdr->frame_control))
1363 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1364 }
1365
1366 return;
1367}
1368
1369/**
1370 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211.
1371 * @common: Pointer to the driver private structure.
1372 * @skb: Pointer to the socket buffer structure.
1373 *
1374 * Return: None.
1375 */
1376void rsi_indicate_pkt_to_os(struct rsi_common *common,
1377 struct sk_buff *skb)
1378{
1379 struct rsi_hw *adapter = common->priv;
1380 struct ieee80211_hw *hw = adapter->hw;
1381 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1382
1383 if ((common->iface_down) || (!adapter->sc_nvifs)) {
1384 dev_kfree_skb(skb);
1385 return;
1386 }
1387
1388 /* filling in the ieee80211_rx_status flags */
1389 rsi_fill_rx_status(hw, skb, common, rx_status);
1390
1391 ieee80211_rx_irqsafe(hw, skb);
1392}
1393
1394/**
1395 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1396 * connected.
1397 * @hw: pointer to the ieee80211_hw structure.
1398 * @vif: Pointer to the ieee80211_vif structure.
1399 * @sta: Pointer to the ieee80211_sta structure.
1400 *
1401 * Return: 0 on success, negative error codes on failure.
1402 */
1403static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1404 struct ieee80211_vif *vif,
1405 struct ieee80211_sta *sta)
1406{
1407 struct rsi_hw *adapter = hw->priv;
1408 struct rsi_common *common = adapter->priv;
1409 bool sta_exist = false;
1410 struct rsi_sta *rsta;
1411 int status = 0;
1412
1413 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1414
1415 mutex_lock(&common->mutex);
1416
1417 if ((vif->type == NL80211_IFTYPE_AP) ||
1418 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1419 u8 cnt;
1420 int sta_idx = -1;
1421 int free_index = -1;
1422
1423 /* Check if max stations reached */
1424 if (common->num_stations >= common->max_stations) {
1425 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1426 status = -EOPNOTSUPP;
1427 goto unlock;
1428 }
1429 for (cnt = 0; cnt < common->max_stations; cnt++) {
1430 rsta = &common->stations[cnt];
1431
1432 if (!rsta->sta) {
1433 if (free_index < 0)
1434 free_index = cnt;
1435 continue;
1436 }
1437 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1438 rsi_dbg(INFO_ZONE, "Station exists\n");
1439 sta_idx = cnt;
1440 sta_exist = true;
1441 break;
1442 }
1443 }
1444 if (!sta_exist) {
1445 if (free_index >= 0)
1446 sta_idx = free_index;
1447 }
1448 if (sta_idx < 0) {
1449 rsi_dbg(ERR_ZONE,
1450 "%s: Some problem reaching here...\n",
1451 __func__);
1452 status = -EINVAL;
1453 goto unlock;
1454 }
1455 rsta = &common->stations[sta_idx];
1456 rsta->sta = sta;
1457 rsta->sta_id = sta_idx;
1458 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1459 rsta->start_tx_aggr[cnt] = false;
1460 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1461 rsta->seq_start[cnt] = 0;
1462 if (!sta_exist) {
1463 rsi_dbg(INFO_ZONE, "New Station\n");
1464
1465 /* Send peer notify to device */
1466 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1467 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1468 sta->addr, sta->wme, sta->aid,
1469 sta, sta_idx, 0, vif);
1470
1471 if (common->key) {
1472 struct ieee80211_key_conf *key = common->key;
1473
1474 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1475 (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1476 rsi_hal_load_key(adapter->priv,
1477 key->key,
1478 key->keylen,
1479 RSI_PAIRWISE_KEY,
1480 key->keyidx,
1481 key->cipher,
1482 sta_idx,
1483 vif);
1484 }
1485
1486 common->num_stations++;
1487 }
1488 }
1489
1490 if ((vif->type == NL80211_IFTYPE_STATION) ||
1491 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1492 common->bitrate_mask[common->band] = sta->deflink.supp_rates[common->band];
1493 common->vif_info[0].is_ht = sta->deflink.ht_cap.ht_supported;
1494 if (sta->deflink.ht_cap.ht_supported) {
1495 common->bitrate_mask[NL80211_BAND_2GHZ] =
1496 sta->deflink.supp_rates[NL80211_BAND_2GHZ];
1497 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1498 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1499 common->vif_info[0].sgi = true;
1500 ieee80211_start_tx_ba_session(sta, 0, 0);
1501 }
1502 }
1503
1504unlock:
1505 mutex_unlock(&common->mutex);
1506
1507 return status;
1508}
1509
1510/**
1511 * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1512 * getting disconnected.
1513 * @hw: Pointer to the ieee80211_hw structure.
1514 * @vif: Pointer to the ieee80211_vif structure.
1515 * @sta: Pointer to the ieee80211_sta structure.
1516 *
1517 * Return: 0 on success, negative error codes on failure.
1518 */
1519static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1520 struct ieee80211_vif *vif,
1521 struct ieee80211_sta *sta)
1522{
1523 struct rsi_hw *adapter = hw->priv;
1524 struct rsi_common *common = adapter->priv;
1525 struct ieee80211_bss_conf *bss = &vif->bss_conf;
1526 struct rsi_sta *rsta;
1527
1528 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1529
1530 mutex_lock(&common->mutex);
1531
1532 if ((vif->type == NL80211_IFTYPE_AP) ||
1533 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1534 u8 sta_idx, cnt;
1535
1536 /* Send peer notify to device */
1537 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1538 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1539 rsta = &common->stations[sta_idx];
1540
1541 if (!rsta->sta)
1542 continue;
1543 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1544 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1545 sta->addr, sta->wme,
1546 sta->aid, sta, sta_idx,
1547 0, vif);
1548 rsta->sta = NULL;
1549 rsta->sta_id = -1;
1550 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1551 rsta->start_tx_aggr[cnt] = false;
1552 if (common->num_stations > 0)
1553 common->num_stations--;
1554 break;
1555 }
1556 }
1557 if (sta_idx >= common->max_stations)
1558 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1559 }
1560
1561 if ((vif->type == NL80211_IFTYPE_STATION) ||
1562 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1563 /* Resetting all the fields to default values */
1564 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1565 bss->qos = sta->wme;
1566 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1567 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1568 common->vif_info[0].is_ht = false;
1569 common->vif_info[0].sgi = false;
1570 common->vif_info[0].seq_start = 0;
1571 common->secinfo.ptk_cipher = 0;
1572 common->secinfo.gtk_cipher = 0;
1573 if (!common->iface_down)
1574 rsi_send_rx_filter_frame(common, 0);
1575 }
1576 mutex_unlock(&common->mutex);
1577
1578 return 0;
1579}
1580
1581/**
1582 * rsi_mac80211_set_antenna() - This function is used to configure
1583 * tx and rx antennas.
1584 * @hw: Pointer to the ieee80211_hw structure.
1585 * @tx_ant: Bitmap for tx antenna
1586 * @rx_ant: Bitmap for rx antenna
1587 *
1588 * Return: 0 on success, Negative error code on failure.
1589 */
1590static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1591 u32 tx_ant, u32 rx_ant)
1592{
1593 struct rsi_hw *adapter = hw->priv;
1594 struct rsi_common *common = adapter->priv;
1595 u8 antenna = 0;
1596
1597 if (tx_ant > 1 || rx_ant > 1) {
1598 rsi_dbg(ERR_ZONE,
1599 "Invalid antenna selection (tx: %d, rx:%d)\n",
1600 tx_ant, rx_ant);
1601 rsi_dbg(ERR_ZONE,
1602 "Use 0 for int_ant, 1 for ext_ant\n");
1603 return -EINVAL;
1604 }
1605
1606 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1607 __func__, tx_ant, rx_ant);
1608
1609 mutex_lock(&common->mutex);
1610
1611 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1612 if (common->ant_in_use != antenna)
1613 if (rsi_set_antenna(common, antenna))
1614 goto fail_set_antenna;
1615
1616 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1617 tx_ant ? "UFL" : "INT");
1618
1619 common->ant_in_use = antenna;
1620
1621 mutex_unlock(&common->mutex);
1622
1623 return 0;
1624
1625fail_set_antenna:
1626 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1627 mutex_unlock(&common->mutex);
1628 return -EINVAL;
1629}
1630
1631/**
1632 * rsi_mac80211_get_antenna() - This function is used to configure
1633 * tx and rx antennas.
1634 *
1635 * @hw: Pointer to the ieee80211_hw structure.
1636 * @tx_ant: Bitmap for tx antenna
1637 * @rx_ant: Bitmap for rx antenna
1638 *
1639 * Return: 0 on success, negative error codes on failure.
1640 */
1641static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1642 u32 *tx_ant, u32 *rx_ant)
1643{
1644 struct rsi_hw *adapter = hw->priv;
1645 struct rsi_common *common = adapter->priv;
1646
1647 mutex_lock(&common->mutex);
1648
1649 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1650 *rx_ant = 0;
1651
1652 mutex_unlock(&common->mutex);
1653
1654 return 0;
1655}
1656
1657static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1658{
1659 switch (region_code) {
1660 case NL80211_DFS_FCC:
1661 return RSI_REGION_FCC;
1662 case NL80211_DFS_ETSI:
1663 return RSI_REGION_ETSI;
1664 case NL80211_DFS_JP:
1665 return RSI_REGION_TELEC;
1666 case NL80211_DFS_UNSET:
1667 return RSI_REGION_WORLD;
1668 }
1669 return RSI_REGION_WORLD;
1670}
1671
1672static void rsi_reg_notify(struct wiphy *wiphy,
1673 struct regulatory_request *request)
1674{
1675 struct ieee80211_supported_band *sband;
1676 struct ieee80211_channel *ch;
1677 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1678 struct rsi_hw * adapter = hw->priv;
1679 struct rsi_common *common = adapter->priv;
1680 int i;
1681
1682 mutex_lock(&common->mutex);
1683
1684 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1685 request->alpha2, request->dfs_region);
1686
1687 if (common->num_supp_bands > 1) {
1688 sband = wiphy->bands[NL80211_BAND_5GHZ];
1689
1690 for (i = 0; i < sband->n_channels; i++) {
1691 ch = &sband->channels[i];
1692 if (ch->flags & IEEE80211_CHAN_DISABLED)
1693 continue;
1694
1695 if (ch->flags & IEEE80211_CHAN_RADAR)
1696 ch->flags |= IEEE80211_CHAN_NO_IR;
1697 }
1698 }
1699 adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1700 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1701
1702 adapter->country[0] = request->alpha2[0];
1703 adapter->country[1] = request->alpha2[1];
1704
1705 mutex_unlock(&common->mutex);
1706}
1707
1708static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1709{
1710 struct rsi_hw *adapter = hw->priv;
1711 struct rsi_common *common = adapter->priv;
1712
1713 mutex_lock(&common->mutex);
1714 if (common->fsm_state != FSM_MAC_INIT_DONE)
1715 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1716 else
1717 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1718 mutex_unlock(&common->mutex);
1719}
1720
1721static void rsi_resume_conn_channel(struct rsi_common *common)
1722{
1723 struct rsi_hw *adapter = common->priv;
1724 struct ieee80211_vif *vif;
1725 int cnt;
1726
1727 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1728 vif = adapter->vifs[cnt];
1729 if (!vif)
1730 continue;
1731
1732 if ((vif->type == NL80211_IFTYPE_AP) ||
1733 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1734 rsi_switch_channel(adapter, vif);
1735 break;
1736 }
1737 if (((vif->type == NL80211_IFTYPE_STATION) ||
1738 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1739 vif->cfg.assoc) {
1740 rsi_switch_channel(adapter, vif);
1741 break;
1742 }
1743 }
1744}
1745
1746void rsi_roc_timeout(struct timer_list *t)
1747{
1748 struct rsi_common *common = from_timer(common, t, roc_timer);
1749
1750 rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1751
1752 mutex_lock(&common->mutex);
1753 ieee80211_remain_on_channel_expired(common->priv->hw);
1754
1755 if (timer_pending(&common->roc_timer))
1756 del_timer(&common->roc_timer);
1757
1758 rsi_resume_conn_channel(common);
1759 mutex_unlock(&common->mutex);
1760}
1761
1762static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1763 struct ieee80211_channel *chan, int duration,
1764 enum ieee80211_roc_type type)
1765{
1766 struct rsi_hw *adapter = hw->priv;
1767 struct rsi_common *common = adapter->priv;
1768 int status = 0;
1769
1770 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1771
1772 mutex_lock(&common->mutex);
1773 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1774 __func__, chan->hw_value, duration);
1775
1776 if (timer_pending(&common->roc_timer)) {
1777 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1778 del_timer(&common->roc_timer);
1779 }
1780 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1781 add_timer(&common->roc_timer);
1782
1783 /* Configure band */
1784 if (rsi_band_check(common, chan)) {
1785 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1786 status = -EINVAL;
1787 goto out;
1788 }
1789
1790 /* Configure channel */
1791 if (rsi_set_channel(common, chan)) {
1792 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1793 status = -EINVAL;
1794 goto out;
1795 }
1796
1797 common->roc_vif = vif;
1798 ieee80211_ready_on_channel(hw);
1799 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1800 __func__, chan->hw_value);
1801
1802out:
1803 mutex_unlock(&common->mutex);
1804
1805 return status;
1806}
1807
1808static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw,
1809 struct ieee80211_vif *vif)
1810{
1811 struct rsi_hw *adapter = hw->priv;
1812 struct rsi_common *common = adapter->priv;
1813
1814 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1815
1816 mutex_lock(&common->mutex);
1817 if (!timer_pending(&common->roc_timer)) {
1818 mutex_unlock(&common->mutex);
1819 return 0;
1820 }
1821
1822 del_timer(&common->roc_timer);
1823
1824 rsi_resume_conn_channel(common);
1825 mutex_unlock(&common->mutex);
1826
1827 return 0;
1828}
1829
1830#ifdef CONFIG_PM
1831static const struct wiphy_wowlan_support rsi_wowlan_support = {
1832 .flags = WIPHY_WOWLAN_ANY |
1833 WIPHY_WOWLAN_MAGIC_PKT |
1834 WIPHY_WOWLAN_DISCONNECT |
1835 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
1836 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1837 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1838 WIPHY_WOWLAN_4WAY_HANDSHAKE,
1839};
1840
1841static u16 rsi_wow_map_triggers(struct rsi_common *common,
1842 struct cfg80211_wowlan *wowlan)
1843{
1844 u16 wow_triggers = 0;
1845
1846 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1847
1848 if (wowlan->any)
1849 wow_triggers |= RSI_WOW_ANY;
1850 if (wowlan->magic_pkt)
1851 wow_triggers |= RSI_WOW_MAGIC_PKT;
1852 if (wowlan->disconnect)
1853 wow_triggers |= RSI_WOW_DISCONNECT;
1854 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1855 wowlan->four_way_handshake)
1856 wow_triggers |= RSI_WOW_GTK_REKEY;
1857
1858 return wow_triggers;
1859}
1860
1861int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1862{
1863 struct rsi_common *common = adapter->priv;
1864 struct ieee80211_vif *vif = adapter->vifs[0];
1865 u16 triggers = 0;
1866 u16 rx_filter_word = 0;
1867
1868 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1869
1870 if (!vif)
1871 return -EINVAL;
1872
1873 if (WARN_ON(!wowlan)) {
1874 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1875 return -EINVAL;
1876 }
1877
1878 common->wow_flags |= RSI_WOW_ENABLED;
1879 triggers = rsi_wow_map_triggers(common, wowlan);
1880 if (!triggers) {
1881 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1882 return -EINVAL;
1883 }
1884 if (!vif->cfg.assoc) {
1885 rsi_dbg(ERR_ZONE,
1886 "Cannot configure WoWLAN (Station not connected)\n");
1887 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1888 return 0;
1889 }
1890 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1891
1892 if (common->coex_mode > 1)
1893 rsi_disable_ps(adapter, adapter->vifs[0]);
1894
1895 rsi_send_wowlan_request(common, triggers, 1);
1896
1897 /**
1898 * Increase the beacon_miss threshold & keep-alive timers in
1899 * vap_update frame
1900 */
1901 rsi_send_vap_dynamic_update(common);
1902
1903 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1904 rsi_send_rx_filter_frame(common, rx_filter_word);
1905
1906 return 0;
1907}
1908EXPORT_SYMBOL(rsi_config_wowlan);
1909
1910static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1911 struct cfg80211_wowlan *wowlan)
1912{
1913 struct rsi_hw *adapter = hw->priv;
1914 struct rsi_common *common = adapter->priv;
1915
1916 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1917 mutex_lock(&common->mutex);
1918 if (rsi_config_wowlan(adapter, wowlan)) {
1919 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1920 mutex_unlock(&common->mutex);
1921 return 1;
1922 }
1923 mutex_unlock(&common->mutex);
1924
1925 return 0;
1926}
1927
1928static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1929{
1930 u16 rx_filter_word = 0;
1931 struct rsi_hw *adapter = hw->priv;
1932 struct rsi_common *common = adapter->priv;
1933
1934 common->wow_flags = 0;
1935
1936 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1937
1938 if (common->hibernate_resume) {
1939 common->mac_ops_resumed = true;
1940 /* Device need a complete restart of all MAC operations.
1941 * returning 1 will serve this purpose.
1942 */
1943 return 1;
1944 }
1945
1946 mutex_lock(&common->mutex);
1947 rsi_send_wowlan_request(common, 0, 0);
1948
1949 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1950 ALLOW_MGMT_ASSOC_PEER);
1951 rsi_send_rx_filter_frame(common, rx_filter_word);
1952 mutex_unlock(&common->mutex);
1953
1954 return 0;
1955}
1956
1957#endif
1958
1959static const struct ieee80211_ops mac80211_ops = {
1960 .tx = rsi_mac80211_tx,
1961 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
1962 .start = rsi_mac80211_start,
1963 .stop = rsi_mac80211_stop,
1964 .add_interface = rsi_mac80211_add_interface,
1965 .remove_interface = rsi_mac80211_remove_interface,
1966 .config = rsi_mac80211_config,
1967 .bss_info_changed = rsi_mac80211_bss_info_changed,
1968 .conf_tx = rsi_mac80211_conf_tx,
1969 .configure_filter = rsi_mac80211_conf_filter,
1970 .set_key = rsi_mac80211_set_key,
1971 .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1972 .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1973 .ampdu_action = rsi_mac80211_ampdu_action,
1974 .sta_add = rsi_mac80211_sta_add,
1975 .sta_remove = rsi_mac80211_sta_remove,
1976 .set_antenna = rsi_mac80211_set_antenna,
1977 .get_antenna = rsi_mac80211_get_antenna,
1978 .rfkill_poll = rsi_mac80211_rfkill_poll,
1979 .remain_on_channel = rsi_mac80211_roc,
1980 .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1981#ifdef CONFIG_PM
1982 .suspend = rsi_mac80211_suspend,
1983 .resume = rsi_mac80211_resume,
1984#endif
1985 .hw_scan = rsi_mac80211_hw_scan_start,
1986 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan,
1987};
1988
1989/**
1990 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
1991 * @common: Pointer to the driver private structure.
1992 *
1993 * Return: 0 on success, negative error codes on failure.
1994 */
1995int rsi_mac80211_attach(struct rsi_common *common)
1996{
1997 int status = 0;
1998 struct ieee80211_hw *hw = NULL;
1999 struct wiphy *wiphy = NULL;
2000 struct rsi_hw *adapter = common->priv;
2001 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
2002
2003 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
2004
2005 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
2006 if (!hw) {
2007 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
2008 return -ENOMEM;
2009 }
2010
2011 wiphy = hw->wiphy;
2012
2013 SET_IEEE80211_DEV(hw, adapter->device);
2014
2015 hw->priv = adapter;
2016 adapter->hw = hw;
2017
2018 ieee80211_hw_set(hw, SIGNAL_DBM);
2019 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
2020 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2021 ieee80211_hw_set(hw, SUPPORTS_PS);
2022 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
2023
2024 hw->queues = MAX_HW_QUEUES;
2025 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
2026
2027 hw->max_rates = 1;
2028 hw->max_rate_tries = MAX_RETRIES;
2029 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
2030 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
2031
2032 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS;
2033 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS;
2034 hw->rate_control_algorithm = "AARF";
2035
2036 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
2037 ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
2038
2039 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2040 BIT(NL80211_IFTYPE_AP) |
2041 BIT(NL80211_IFTYPE_P2P_DEVICE) |
2042 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2043 BIT(NL80211_IFTYPE_P2P_GO);
2044
2045 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2046 wiphy->retry_short = RETRY_SHORT;
2047 wiphy->retry_long = RETRY_LONG;
2048 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
2049 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
2050 wiphy->flags = 0;
2051
2052 wiphy->available_antennas_rx = 1;
2053 wiphy->available_antennas_tx = 1;
2054
2055 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
2056 if (status)
2057 return status;
2058 wiphy->bands[NL80211_BAND_2GHZ] =
2059 &adapter->sbands[NL80211_BAND_2GHZ];
2060 if (common->num_supp_bands > 1) {
2061 status = rsi_register_rates_channels(adapter,
2062 NL80211_BAND_5GHZ);
2063 if (status)
2064 return status;
2065 wiphy->bands[NL80211_BAND_5GHZ] =
2066 &adapter->sbands[NL80211_BAND_5GHZ];
2067 }
2068
2069 /* AP Parameters */
2070 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
2071 common->max_stations = wiphy->max_ap_assoc_sta;
2072 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
2073 hw->sta_data_size = sizeof(struct rsi_sta);
2074
2075 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS;
2076 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN;
2077 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
2078 wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
2079 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
2080 wiphy->reg_notifier = rsi_reg_notify;
2081
2082#ifdef CONFIG_PM
2083 wiphy->wowlan = &rsi_wowlan_support;
2084#endif
2085
2086 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2087
2088 /* Wi-Fi direct parameters */
2089 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2090 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
2091 wiphy->max_remain_on_channel_duration = 10000;
2092 hw->max_listen_interval = 10;
2093 wiphy->iface_combinations = rsi_iface_combinations;
2094 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
2095
2096 if (common->coex_mode > 1)
2097 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2098
2099 status = ieee80211_register_hw(hw);
2100 if (status)
2101 return status;
2102
2103 return rsi_init_dbgfs(adapter);
2104}