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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 struct ieee80211_bss_conf *bss = &vif->bss_conf;
241
242 rsi_dbg(INFO_ZONE, "***** Hardware scan start *****\n");
243 common->mac_ops_resumed = false;
244
245 if (common->fsm_state != FSM_MAC_INIT_DONE)
246 return -ENODEV;
247
248 if ((common->wow_flags & RSI_WOW_ENABLED) ||
249 scan_req->n_channels == 0)
250 return -EINVAL;
251
252 /* Scan already in progress. So return */
253 if (common->bgscan_en)
254 return -EBUSY;
255
256 /* If STA is not connected, return with special value 1, in order
257 * to start sw_scan in mac80211
258 */
259 if (!bss->assoc)
260 return 1;
261
262 mutex_lock(&common->mutex);
263 common->hwscan = scan_req;
264 if (!rsi_send_bgscan_params(common, RSI_START_BGSCAN)) {
265 if (!rsi_send_bgscan_probe_req(common, vif)) {
266 rsi_dbg(INFO_ZONE, "Background scan started...\n");
267 common->bgscan_en = true;
268 }
269 }
270 mutex_unlock(&common->mutex);
271
272 return 0;
273}
274
275static void rsi_mac80211_cancel_hw_scan(struct ieee80211_hw *hw,
276 struct ieee80211_vif *vif)
277{
278 struct rsi_hw *adapter = hw->priv;
279 struct rsi_common *common = adapter->priv;
280 struct cfg80211_scan_info info;
281
282 rsi_dbg(INFO_ZONE, "***** Hardware scan stop *****\n");
283 mutex_lock(&common->mutex);
284
285 if (common->bgscan_en) {
286 if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN))
287 common->bgscan_en = false;
288 info.aborted = false;
289 ieee80211_scan_completed(adapter->hw, &info);
290 rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n");
291 }
292 common->hwscan = NULL;
293 mutex_unlock(&common->mutex);
294}
295
296/**
297 * rsi_mac80211_detach() - This function is used to de-initialize the
298 * Mac80211 stack.
299 * @adapter: Pointer to the adapter structure.
300 *
301 * Return: None.
302 */
303void rsi_mac80211_detach(struct rsi_hw *adapter)
304{
305 struct ieee80211_hw *hw = adapter->hw;
306 enum nl80211_band band;
307
308 if (hw) {
309 ieee80211_stop_queues(hw);
310 ieee80211_unregister_hw(hw);
311 ieee80211_free_hw(hw);
312 adapter->hw = NULL;
313 }
314
315 for (band = 0; band < NUM_NL80211_BANDS; band++) {
316 struct ieee80211_supported_band *sband =
317 &adapter->sbands[band];
318
319 kfree(sband->channels);
320 }
321
322#ifdef CONFIG_RSI_DEBUGFS
323 rsi_remove_dbgfs(adapter);
324 kfree(adapter->dfsentry);
325#endif
326}
327EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
328
329/**
330 * rsi_indicate_tx_status() - This function indicates the transmit status.
331 * @adapter: Pointer to the adapter structure.
332 * @skb: Pointer to the socket buffer structure.
333 * @status: Status
334 *
335 * Return: None.
336 */
337void rsi_indicate_tx_status(struct rsi_hw *adapter,
338 struct sk_buff *skb,
339 int status)
340{
341 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
342 struct skb_info *tx_params;
343
344 if (!adapter->hw) {
345 rsi_dbg(ERR_ZONE, "##### No MAC #####\n");
346 return;
347 }
348
349 if (!status)
350 info->flags |= IEEE80211_TX_STAT_ACK;
351
352 tx_params = (struct skb_info *)info->driver_data;
353 skb_pull(skb, tx_params->internal_hdr_size);
354 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
355
356 ieee80211_tx_status_irqsafe(adapter->hw, skb);
357}
358
359/**
360 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
361 * transmitted frame.SKB contains the buffer starting
362 * from the IEEE 802.11 header.
363 * @hw: Pointer to the ieee80211_hw structure.
364 * @control: Pointer to the ieee80211_tx_control structure
365 * @skb: Pointer to the socket buffer structure.
366 *
367 * Return: None
368 */
369static void rsi_mac80211_tx(struct ieee80211_hw *hw,
370 struct ieee80211_tx_control *control,
371 struct sk_buff *skb)
372{
373 struct rsi_hw *adapter = hw->priv;
374 struct rsi_common *common = adapter->priv;
375 struct ieee80211_hdr *wlh = (struct ieee80211_hdr *)skb->data;
376
377 if (ieee80211_is_auth(wlh->frame_control))
378 common->mac_ops_resumed = false;
379
380 rsi_core_xmit(common, skb);
381}
382
383/**
384 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
385 * the driver init is complete by then, just
386 * returns success.
387 * @hw: Pointer to the ieee80211_hw structure.
388 *
389 * Return: 0 as success.
390 */
391static int rsi_mac80211_start(struct ieee80211_hw *hw)
392{
393 struct rsi_hw *adapter = hw->priv;
394 struct rsi_common *common = adapter->priv;
395
396 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
397 mutex_lock(&common->mutex);
398 if (common->hibernate_resume) {
399 common->reinit_hw = true;
400 adapter->host_intf_ops->reinit_device(adapter);
401 wait_for_completion(&adapter->priv->wlan_init_completion);
402 }
403 common->iface_down = false;
404 wiphy_rfkill_start_polling(hw->wiphy);
405 rsi_send_rx_filter_frame(common, 0);
406 mutex_unlock(&common->mutex);
407
408 return 0;
409}
410
411/**
412 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
413 * @hw: Pointer to the ieee80211_hw structure.
414 *
415 * Return: None.
416 */
417static void rsi_mac80211_stop(struct ieee80211_hw *hw)
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
433static 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 */
459static 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 common->min_rate = RSI_RATE_AUTO;
514 for (i = 0; i < common->max_stations; i++)
515 common->stations[i].sta = NULL;
516 }
517
518 mutex_unlock(&common->mutex);
519
520 return 0;
521}
522
523/**
524 * rsi_mac80211_remove_interface() - This function notifies driver that an
525 * interface is going down.
526 * @hw: Pointer to the ieee80211_hw structure.
527 * @vif: Pointer to the ieee80211_vif structure.
528 *
529 * Return: None.
530 */
531static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
532 struct ieee80211_vif *vif)
533{
534 struct rsi_hw *adapter = hw->priv;
535 struct rsi_common *common = adapter->priv;
536 enum opmode opmode;
537 int i;
538
539 rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
540
541 mutex_lock(&common->mutex);
542
543 if (adapter->sc_nvifs <= 0) {
544 mutex_unlock(&common->mutex);
545 return;
546 }
547
548 opmode = rsi_map_intf_mode(vif->type);
549 if (opmode == RSI_OPMODE_UNSUPPORTED) {
550 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
551 mutex_unlock(&common->mutex);
552 return;
553 }
554 for (i = 0; i < RSI_MAX_VIFS; i++) {
555 if (!adapter->vifs[i])
556 continue;
557 if (vif == adapter->vifs[i]) {
558 rsi_set_vap_capabilities(common, opmode, vif->addr,
559 i, VAP_DELETE);
560 adapter->sc_nvifs--;
561 adapter->vifs[i] = NULL;
562 }
563 }
564 mutex_unlock(&common->mutex);
565}
566
567/**
568 * rsi_channel_change() - This function is a performs the checks
569 * required for changing a channel and sets
570 * the channel accordingly.
571 * @hw: Pointer to the ieee80211_hw structure.
572 *
573 * Return: 0 on success, negative error code on failure.
574 */
575static int rsi_channel_change(struct ieee80211_hw *hw)
576{
577 struct rsi_hw *adapter = hw->priv;
578 struct rsi_common *common = adapter->priv;
579 int status = -EOPNOTSUPP;
580 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
581 u16 channel = curchan->hw_value;
582 struct ieee80211_vif *vif;
583 struct ieee80211_bss_conf *bss;
584 bool assoc = false;
585 int i;
586
587 rsi_dbg(INFO_ZONE,
588 "%s: Set channel: %d MHz type: %d channel_no %d\n",
589 __func__, curchan->center_freq,
590 curchan->flags, channel);
591
592 for (i = 0; i < RSI_MAX_VIFS; i++) {
593 vif = adapter->vifs[i];
594 if (!vif)
595 continue;
596 if (vif->type == NL80211_IFTYPE_STATION) {
597 bss = &vif->bss_conf;
598 if (bss->assoc) {
599 assoc = true;
600 break;
601 }
602 }
603 }
604 if (assoc) {
605 if (!common->hw_data_qs_blocked &&
606 (rsi_get_connected_channel(vif) != channel)) {
607 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
608 if (!rsi_send_block_unblock_frame(common, true))
609 common->hw_data_qs_blocked = true;
610 }
611 }
612
613 status = rsi_band_check(common, curchan);
614 if (!status)
615 status = rsi_set_channel(adapter->priv, curchan);
616
617 if (assoc) {
618 if (common->hw_data_qs_blocked &&
619 (rsi_get_connected_channel(vif) == channel)) {
620 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
621 if (!rsi_send_block_unblock_frame(common, false))
622 common->hw_data_qs_blocked = false;
623 }
624 }
625
626 return status;
627}
628
629/**
630 * rsi_config_power() - This function configures tx power to device
631 * @hw: Pointer to the ieee80211_hw structure.
632 *
633 * Return: 0 on success, negative error code on failure.
634 */
635static int rsi_config_power(struct ieee80211_hw *hw)
636{
637 struct rsi_hw *adapter = hw->priv;
638 struct rsi_common *common = adapter->priv;
639 struct ieee80211_conf *conf = &hw->conf;
640
641 if (adapter->sc_nvifs <= 0) {
642 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
643 return -EINVAL;
644 }
645
646 rsi_dbg(INFO_ZONE,
647 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
648
649 if (conf->power_level == common->tx_power)
650 return 0;
651
652 common->tx_power = conf->power_level;
653
654 return rsi_send_radio_params_update(common);
655}
656
657/**
658 * rsi_mac80211_config() - This function is a handler for configuration
659 * requests. The stack calls this function to
660 * change hardware configuration, e.g., channel.
661 * @hw: Pointer to the ieee80211_hw structure.
662 * @changed: Changed flags set.
663 *
664 * Return: 0 on success, negative error code on failure.
665 */
666static int rsi_mac80211_config(struct ieee80211_hw *hw,
667 u32 changed)
668{
669 struct rsi_hw *adapter = hw->priv;
670 struct rsi_common *common = adapter->priv;
671 struct ieee80211_conf *conf = &hw->conf;
672 int status = -EOPNOTSUPP;
673
674 mutex_lock(&common->mutex);
675
676 if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
677 status = rsi_channel_change(hw);
678
679 /* tx power */
680 if (changed & IEEE80211_CONF_CHANGE_POWER) {
681 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
682 status = rsi_config_power(hw);
683 }
684
685 /* Power save parameters */
686 if ((changed & IEEE80211_CONF_CHANGE_PS) &&
687 !common->mac_ops_resumed) {
688 struct ieee80211_vif *vif, *sta_vif = NULL;
689 unsigned long flags;
690 int i, set_ps = 1;
691
692 for (i = 0; i < RSI_MAX_VIFS; i++) {
693 vif = adapter->vifs[i];
694 if (!vif)
695 continue;
696 /* Don't go to power save if AP vap exists */
697 if ((vif->type == NL80211_IFTYPE_AP) ||
698 (vif->type == NL80211_IFTYPE_P2P_GO)) {
699 set_ps = 0;
700 break;
701 }
702 if ((vif->type == NL80211_IFTYPE_STATION ||
703 vif->type == NL80211_IFTYPE_P2P_CLIENT) &&
704 (!sta_vif || vif->bss_conf.assoc))
705 sta_vif = vif;
706 }
707 if (set_ps && sta_vif) {
708 spin_lock_irqsave(&adapter->ps_lock, flags);
709 if (conf->flags & IEEE80211_CONF_PS)
710 rsi_enable_ps(adapter, sta_vif);
711 else
712 rsi_disable_ps(adapter, sta_vif);
713 spin_unlock_irqrestore(&adapter->ps_lock, flags);
714 }
715 }
716
717 /* RTS threshold */
718 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
719 rsi_dbg(INFO_ZONE, "RTS threshold\n");
720 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
721 rsi_dbg(INFO_ZONE,
722 "%s: Sending vap updates....\n", __func__);
723 status = rsi_send_vap_dynamic_update(common);
724 }
725 }
726 mutex_unlock(&common->mutex);
727
728 return status;
729}
730
731/**
732 * rsi_get_connected_channel() - This function is used to get the current
733 * connected channel number.
734 * @adapter: Pointer to the adapter structure.
735 *
736 * Return: Current connected AP's channel number is returned.
737 */
738u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
739{
740 struct ieee80211_bss_conf *bss;
741 struct ieee80211_channel *channel;
742
743 if (!vif)
744 return 0;
745
746 bss = &vif->bss_conf;
747 channel = bss->chandef.chan;
748
749 if (!channel)
750 return 0;
751
752 return channel->hw_value;
753}
754
755static void rsi_switch_channel(struct rsi_hw *adapter,
756 struct ieee80211_vif *vif)
757{
758 struct rsi_common *common = adapter->priv;
759 struct ieee80211_channel *channel;
760
761 if (common->iface_down)
762 return;
763 if (!vif)
764 return;
765
766 channel = vif->bss_conf.chandef.chan;
767
768 if (!channel)
769 return;
770
771 rsi_band_check(common, channel);
772 rsi_set_channel(common, channel);
773 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
774}
775
776/**
777 * rsi_mac80211_bss_info_changed() - This function is a handler for config
778 * requests related to BSS parameters that
779 * may vary during BSS's lifespan.
780 * @hw: Pointer to the ieee80211_hw structure.
781 * @vif: Pointer to the ieee80211_vif structure.
782 * @bss_conf: Pointer to the ieee80211_bss_conf structure.
783 * @changed: Changed flags set.
784 *
785 * Return: None.
786 */
787static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
788 struct ieee80211_vif *vif,
789 struct ieee80211_bss_conf *bss_conf,
790 u32 changed)
791{
792 struct rsi_hw *adapter = hw->priv;
793 struct rsi_common *common = adapter->priv;
794 struct ieee80211_bss_conf *bss = &vif->bss_conf;
795 struct ieee80211_conf *conf = &hw->conf;
796 u16 rx_filter_word = 0;
797
798 mutex_lock(&common->mutex);
799 if (changed & BSS_CHANGED_ASSOC) {
800 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
801 __func__, bss_conf->assoc);
802 if (bss_conf->assoc) {
803 /* Send the RX filter frame */
804 rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
805 ALLOW_CTRL_ASSOC_PEER |
806 ALLOW_MGMT_ASSOC_PEER);
807 rsi_send_rx_filter_frame(common, rx_filter_word);
808 }
809 rsi_inform_bss_status(common,
810 RSI_OPMODE_STA,
811 bss_conf->assoc,
812 bss_conf->bssid,
813 bss_conf->qos,
814 bss_conf->aid,
815 NULL, 0,
816 bss_conf->assoc_capability, vif);
817 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
818 adapter->ps_info.listen_interval = conf->listen_interval;
819
820 /* If U-APSD is updated, send ps parameters to firmware */
821 if (bss->assoc) {
822 if (common->uapsd_bitmap) {
823 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
824 rsi_conf_uapsd(adapter, vif);
825 }
826 } else {
827 common->uapsd_bitmap = 0;
828 }
829 }
830
831 if (changed & BSS_CHANGED_CQM) {
832 common->cqm_info.last_cqm_event_rssi = 0;
833 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
834 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
835 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n",
836 common->cqm_info.rssi_thold,
837 common->cqm_info.rssi_hyst);
838 }
839
840 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
841 ((vif->type == NL80211_IFTYPE_AP) ||
842 (vif->type == NL80211_IFTYPE_P2P_GO))) {
843 if (bss->enable_beacon) {
844 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
845 common->beacon_enabled = 1;
846 } else {
847 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
848 common->beacon_enabled = 0;
849 }
850 }
851
852 mutex_unlock(&common->mutex);
853}
854
855/**
856 * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
857 * @hw: Pointer to the ieee80211_hw structure.
858 * @changed: Changed flags set.
859 * @total_flags: Total initial flags set.
860 * @multicast: Multicast.
861 *
862 * Return: None.
863 */
864static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
865 u32 changed_flags,
866 u32 *total_flags,
867 u64 multicast)
868{
869 /* Not doing much here as of now */
870 *total_flags &= RSI_SUPP_FILTERS;
871}
872
873/**
874 * rsi_mac80211_conf_tx() - This function configures TX queue parameters
875 * (EDCF (aifs, cw_min, cw_max), bursting)
876 * for a hardware TX queue.
877 * @hw: Pointer to the ieee80211_hw structure
878 * @vif: Pointer to the ieee80211_vif structure.
879 * @queue: Queue number.
880 * @params: Pointer to ieee80211_tx_queue_params structure.
881 *
882 * Return: 0 on success, negative error code on failure.
883 */
884static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
885 struct ieee80211_vif *vif, u16 queue,
886 const struct ieee80211_tx_queue_params *params)
887{
888 struct rsi_hw *adapter = hw->priv;
889 struct rsi_common *common = adapter->priv;
890 u8 idx = 0;
891
892 if (queue >= IEEE80211_NUM_ACS)
893 return 0;
894
895 rsi_dbg(INFO_ZONE,
896 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
897 __func__, queue, params->aifs,
898 params->cw_min, params->cw_max, params->txop);
899
900 mutex_lock(&common->mutex);
901 /* Map into the way the f/w expects */
902 switch (queue) {
903 case IEEE80211_AC_VO:
904 idx = VO_Q;
905 break;
906 case IEEE80211_AC_VI:
907 idx = VI_Q;
908 break;
909 case IEEE80211_AC_BE:
910 idx = BE_Q;
911 break;
912 case IEEE80211_AC_BK:
913 idx = BK_Q;
914 break;
915 default:
916 idx = BE_Q;
917 break;
918 }
919
920 memcpy(&common->edca_params[idx],
921 params,
922 sizeof(struct ieee80211_tx_queue_params));
923
924 if (params->uapsd)
925 common->uapsd_bitmap |= idx;
926 else
927 common->uapsd_bitmap &= (~idx);
928
929 mutex_unlock(&common->mutex);
930
931 return 0;
932}
933
934/**
935 * rsi_hal_key_config() - This function loads the keys into the firmware.
936 * @hw: Pointer to the ieee80211_hw structure.
937 * @vif: Pointer to the ieee80211_vif structure.
938 * @key: Pointer to the ieee80211_key_conf structure.
939 *
940 * Return: status: 0 on success, negative error codes on failure.
941 */
942static int rsi_hal_key_config(struct ieee80211_hw *hw,
943 struct ieee80211_vif *vif,
944 struct ieee80211_key_conf *key,
945 struct ieee80211_sta *sta)
946{
947 struct rsi_hw *adapter = hw->priv;
948 struct rsi_sta *rsta = NULL;
949 int status;
950 u8 key_type;
951 s16 sta_id = 0;
952
953 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
954 key_type = RSI_PAIRWISE_KEY;
955 else
956 key_type = RSI_GROUP_KEY;
957
958 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
959 __func__, key->cipher, key_type, key->keylen);
960
961 if ((vif->type == NL80211_IFTYPE_AP) ||
962 (vif->type == NL80211_IFTYPE_P2P_GO)) {
963 if (sta) {
964 rsta = rsi_find_sta(adapter->priv, sta->addr);
965 if (rsta)
966 sta_id = rsta->sta_id;
967 }
968 adapter->priv->key = key;
969 } else {
970 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
971 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
972 status = rsi_hal_load_key(adapter->priv,
973 key->key,
974 key->keylen,
975 RSI_PAIRWISE_KEY,
976 key->keyidx,
977 key->cipher,
978 sta_id,
979 vif);
980 if (status)
981 return status;
982 }
983 }
984
985 status = rsi_hal_load_key(adapter->priv,
986 key->key,
987 key->keylen,
988 key_type,
989 key->keyidx,
990 key->cipher,
991 sta_id,
992 vif);
993 if (status)
994 return status;
995
996 if (vif->type == NL80211_IFTYPE_STATION &&
997 (key->cipher == WLAN_CIPHER_SUITE_WEP104 ||
998 key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
999 if (!rsi_send_block_unblock_frame(adapter->priv, false))
1000 adapter->priv->hw_data_qs_blocked = false;
1001 }
1002
1003 return 0;
1004}
1005
1006/**
1007 * rsi_mac80211_set_key() - This function sets type of key to be loaded.
1008 * @hw: Pointer to the ieee80211_hw structure.
1009 * @cmd: enum set_key_cmd.
1010 * @vif: Pointer to the ieee80211_vif structure.
1011 * @sta: Pointer to the ieee80211_sta structure.
1012 * @key: Pointer to the ieee80211_key_conf structure.
1013 *
1014 * Return: status: 0 on success, negative error code on failure.
1015 */
1016static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
1017 enum set_key_cmd cmd,
1018 struct ieee80211_vif *vif,
1019 struct ieee80211_sta *sta,
1020 struct ieee80211_key_conf *key)
1021{
1022 struct rsi_hw *adapter = hw->priv;
1023 struct rsi_common *common = adapter->priv;
1024 struct security_info *secinfo = &common->secinfo;
1025 int status;
1026
1027 mutex_lock(&common->mutex);
1028 switch (cmd) {
1029 case SET_KEY:
1030 secinfo->security_enable = true;
1031 status = rsi_hal_key_config(hw, vif, key, sta);
1032 if (status) {
1033 mutex_unlock(&common->mutex);
1034 return status;
1035 }
1036
1037 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
1038 secinfo->ptk_cipher = key->cipher;
1039 else
1040 secinfo->gtk_cipher = key->cipher;
1041
1042 key->hw_key_idx = key->keyidx;
1043 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1044
1045 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
1046 break;
1047
1048 case DISABLE_KEY:
1049 if (vif->type == NL80211_IFTYPE_STATION)
1050 secinfo->security_enable = false;
1051 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
1052 memset(key, 0, sizeof(struct ieee80211_key_conf));
1053 status = rsi_hal_key_config(hw, vif, key, sta);
1054 break;
1055
1056 default:
1057 status = -EOPNOTSUPP;
1058 break;
1059 }
1060
1061 mutex_unlock(&common->mutex);
1062 return status;
1063}
1064
1065/**
1066 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
1067 * the corresponding mlme_action flag and
1068 * informs the f/w regarding this.
1069 * @hw: Pointer to the ieee80211_hw structure.
1070 * @vif: Pointer to the ieee80211_vif structure.
1071 * @params: Pointer to A-MPDU action parameters
1072 *
1073 * Return: status: 0 on success, negative error code on failure.
1074 */
1075static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
1076 struct ieee80211_vif *vif,
1077 struct ieee80211_ampdu_params *params)
1078{
1079 int status = -EOPNOTSUPP;
1080 struct rsi_hw *adapter = hw->priv;
1081 struct rsi_common *common = adapter->priv;
1082 struct rsi_sta *rsta = NULL;
1083 u16 seq_no = 0, seq_start = 0;
1084 u8 ii = 0;
1085 struct ieee80211_sta *sta = params->sta;
1086 u8 sta_id = 0;
1087 enum ieee80211_ampdu_mlme_action action = params->action;
1088 u16 tid = params->tid;
1089 u16 *ssn = ¶ms->ssn;
1090 u8 buf_size = params->buf_size;
1091
1092 for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1093 if (vif == adapter->vifs[ii])
1094 break;
1095 }
1096
1097 mutex_lock(&common->mutex);
1098
1099 if (ssn != NULL)
1100 seq_no = *ssn;
1101
1102 if ((vif->type == NL80211_IFTYPE_AP) ||
1103 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1104 rsta = rsi_find_sta(common, sta->addr);
1105 if (!rsta) {
1106 rsi_dbg(ERR_ZONE, "No station mapped\n");
1107 status = 0;
1108 goto unlock;
1109 }
1110 sta_id = rsta->sta_id;
1111 }
1112
1113 rsi_dbg(INFO_ZONE,
1114 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1115 __func__, tid, seq_no, buf_size, sta_id);
1116
1117 switch (action) {
1118 case IEEE80211_AMPDU_RX_START:
1119 status = rsi_send_aggregation_params_frame(common,
1120 tid,
1121 seq_no,
1122 buf_size,
1123 STA_RX_ADDBA_DONE,
1124 sta_id);
1125 break;
1126
1127 case IEEE80211_AMPDU_RX_STOP:
1128 status = rsi_send_aggregation_params_frame(common,
1129 tid,
1130 0,
1131 buf_size,
1132 STA_RX_DELBA,
1133 sta_id);
1134 break;
1135
1136 case IEEE80211_AMPDU_TX_START:
1137 if ((vif->type == NL80211_IFTYPE_STATION) ||
1138 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1139 common->vif_info[ii].seq_start = seq_no;
1140 else if ((vif->type == NL80211_IFTYPE_AP) ||
1141 (vif->type == NL80211_IFTYPE_P2P_GO))
1142 rsta->seq_start[tid] = seq_no;
1143 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1144 status = 0;
1145 break;
1146
1147 case IEEE80211_AMPDU_TX_STOP_CONT:
1148 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1149 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1150 status = rsi_send_aggregation_params_frame(common,
1151 tid,
1152 seq_no,
1153 buf_size,
1154 STA_TX_DELBA,
1155 sta_id);
1156 if (!status)
1157 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1158 break;
1159
1160 case IEEE80211_AMPDU_TX_OPERATIONAL:
1161 if ((vif->type == NL80211_IFTYPE_STATION) ||
1162 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1163 seq_start = common->vif_info[ii].seq_start;
1164 else if ((vif->type == NL80211_IFTYPE_AP) ||
1165 (vif->type == NL80211_IFTYPE_P2P_GO))
1166 seq_start = rsta->seq_start[tid];
1167 status = rsi_send_aggregation_params_frame(common,
1168 tid,
1169 seq_start,
1170 buf_size,
1171 STA_TX_ADDBA_DONE,
1172 sta_id);
1173 break;
1174
1175 default:
1176 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__);
1177 break;
1178 }
1179
1180unlock:
1181 mutex_unlock(&common->mutex);
1182 return status;
1183}
1184
1185/**
1186 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1187 * @hw: Pointer to the ieee80211_hw structure.
1188 * @value: Rts threshold value.
1189 *
1190 * Return: 0 on success.
1191 */
1192static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1193 u32 value)
1194{
1195 struct rsi_hw *adapter = hw->priv;
1196 struct rsi_common *common = adapter->priv;
1197
1198 mutex_lock(&common->mutex);
1199 common->rts_threshold = value;
1200 mutex_unlock(&common->mutex);
1201
1202 return 0;
1203}
1204
1205/**
1206 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1207 * @hw: Pointer to the ieee80211_hw structure
1208 * @vif: Pointer to the ieee80211_vif structure.
1209 * @mask: Pointer to the cfg80211_bitrate_mask structure.
1210 *
1211 * Return: 0 on success.
1212 */
1213static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1214 struct ieee80211_vif *vif,
1215 const struct cfg80211_bitrate_mask *mask)
1216{
1217 struct rsi_hw *adapter = hw->priv;
1218 struct rsi_common *common = adapter->priv;
1219 enum nl80211_band band = hw->conf.chandef.chan->band;
1220
1221 mutex_lock(&common->mutex);
1222 common->fixedrate_mask[band] = 0;
1223
1224 if (mask->control[band].legacy == 0xfff) {
1225 common->fixedrate_mask[band] =
1226 (mask->control[band].ht_mcs[0] << 12);
1227 } else {
1228 common->fixedrate_mask[band] =
1229 mask->control[band].legacy;
1230 }
1231 mutex_unlock(&common->mutex);
1232
1233 return 0;
1234}
1235
1236/**
1237 * rsi_perform_cqm() - This function performs cqm.
1238 * @common: Pointer to the driver private structure.
1239 * @bssid: pointer to the bssid.
1240 * @rssi: RSSI value.
1241 */
1242static void rsi_perform_cqm(struct rsi_common *common,
1243 u8 *bssid,
1244 s8 rssi,
1245 struct ieee80211_vif *vif)
1246{
1247 s8 last_event = common->cqm_info.last_cqm_event_rssi;
1248 int thold = common->cqm_info.rssi_thold;
1249 u32 hyst = common->cqm_info.rssi_hyst;
1250 enum nl80211_cqm_rssi_threshold_event event;
1251
1252 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1253 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1254 else if (rssi > thold &&
1255 (last_event == 0 || rssi > (last_event + hyst)))
1256 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1257 else
1258 return;
1259
1260 common->cqm_info.last_cqm_event_rssi = rssi;
1261 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1262 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1263
1264 return;
1265}
1266
1267/**
1268 * rsi_fill_rx_status() - This function fills rx status in
1269 * ieee80211_rx_status structure.
1270 * @hw: Pointer to the ieee80211_hw structure.
1271 * @skb: Pointer to the socket buffer structure.
1272 * @common: Pointer to the driver private structure.
1273 * @rxs: Pointer to the ieee80211_rx_status structure.
1274 *
1275 * Return: None.
1276 */
1277static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1278 struct sk_buff *skb,
1279 struct rsi_common *common,
1280 struct ieee80211_rx_status *rxs)
1281{
1282 struct rsi_hw *adapter = common->priv;
1283 struct ieee80211_vif *vif;
1284 struct ieee80211_bss_conf *bss = NULL;
1285 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1286 struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1287 struct ieee80211_hdr *hdr;
1288 char rssi = rx_params->rssi;
1289 u8 hdrlen = 0;
1290 u8 channel = rx_params->channel;
1291 s32 freq;
1292 int i;
1293
1294 hdr = ((struct ieee80211_hdr *)(skb->data));
1295 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1296
1297 memset(info, 0, sizeof(struct ieee80211_tx_info));
1298
1299 rxs->signal = -(rssi);
1300
1301 rxs->band = common->band;
1302
1303 freq = ieee80211_channel_to_frequency(channel, rxs->band);
1304
1305 if (freq)
1306 rxs->freq = freq;
1307
1308 if (ieee80211_has_protected(hdr->frame_control)) {
1309 if (rsi_is_cipher_wep(common)) {
1310 memmove(skb->data + 4, skb->data, hdrlen);
1311 skb_pull(skb, 4);
1312 } else {
1313 memmove(skb->data + 8, skb->data, hdrlen);
1314 skb_pull(skb, 8);
1315 rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1316 }
1317 rxs->flag |= RX_FLAG_DECRYPTED;
1318 rxs->flag |= RX_FLAG_IV_STRIPPED;
1319 }
1320
1321 for (i = 0; i < RSI_MAX_VIFS; i++) {
1322 vif = adapter->vifs[i];
1323 if (!vif)
1324 continue;
1325 if (vif->type == NL80211_IFTYPE_STATION) {
1326 bss = &vif->bss_conf;
1327 break;
1328 }
1329 }
1330 if (!bss)
1331 return;
1332 /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1333 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1334 if (ieee80211_is_beacon(hdr->frame_control))
1335 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1336 }
1337
1338 return;
1339}
1340
1341/**
1342 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211.
1343 * @common: Pointer to the driver private structure.
1344 * @skb: Pointer to the socket buffer structure.
1345 *
1346 * Return: None.
1347 */
1348void rsi_indicate_pkt_to_os(struct rsi_common *common,
1349 struct sk_buff *skb)
1350{
1351 struct rsi_hw *adapter = common->priv;
1352 struct ieee80211_hw *hw = adapter->hw;
1353 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1354
1355 if ((common->iface_down) || (!adapter->sc_nvifs)) {
1356 dev_kfree_skb(skb);
1357 return;
1358 }
1359
1360 /* filling in the ieee80211_rx_status flags */
1361 rsi_fill_rx_status(hw, skb, common, rx_status);
1362
1363 ieee80211_rx_irqsafe(hw, skb);
1364}
1365
1366static void rsi_set_min_rate(struct ieee80211_hw *hw,
1367 struct ieee80211_sta *sta,
1368 struct rsi_common *common)
1369{
1370 u8 band = hw->conf.chandef.chan->band;
1371 u8 ii;
1372 u32 rate_bitmap;
1373 bool matched = false;
1374
1375 common->bitrate_mask[band] = sta->supp_rates[band];
1376
1377 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]);
1378
1379 if (rate_bitmap & 0xfff) {
1380 /* Find out the min rate */
1381 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) {
1382 if (rate_bitmap & BIT(ii)) {
1383 common->min_rate = rsi_rates[ii].hw_value;
1384 matched = true;
1385 break;
1386 }
1387 }
1388 }
1389
1390 common->vif_info[0].is_ht = sta->ht_cap.ht_supported;
1391
1392 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) {
1393 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) {
1394 if ((rate_bitmap >> 12) & BIT(ii)) {
1395 common->min_rate = rsi_mcsrates[ii];
1396 matched = true;
1397 break;
1398 }
1399 }
1400 }
1401
1402 if (!matched)
1403 common->min_rate = 0xffff;
1404}
1405
1406/**
1407 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1408 * connected.
1409 * @hw: pointer to the ieee80211_hw structure.
1410 * @vif: Pointer to the ieee80211_vif structure.
1411 * @sta: Pointer to the ieee80211_sta structure.
1412 *
1413 * Return: 0 on success, negative error codes on failure.
1414 */
1415static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1416 struct ieee80211_vif *vif,
1417 struct ieee80211_sta *sta)
1418{
1419 struct rsi_hw *adapter = hw->priv;
1420 struct rsi_common *common = adapter->priv;
1421 bool sta_exist = false;
1422 struct rsi_sta *rsta;
1423 int status = 0;
1424
1425 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1426
1427 mutex_lock(&common->mutex);
1428
1429 if ((vif->type == NL80211_IFTYPE_AP) ||
1430 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1431 u8 cnt;
1432 int sta_idx = -1;
1433 int free_index = -1;
1434
1435 /* Check if max stations reached */
1436 if (common->num_stations >= common->max_stations) {
1437 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1438 status = -EOPNOTSUPP;
1439 goto unlock;
1440 }
1441 for (cnt = 0; cnt < common->max_stations; cnt++) {
1442 rsta = &common->stations[cnt];
1443
1444 if (!rsta->sta) {
1445 if (free_index < 0)
1446 free_index = cnt;
1447 continue;
1448 }
1449 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1450 rsi_dbg(INFO_ZONE, "Station exists\n");
1451 sta_idx = cnt;
1452 sta_exist = true;
1453 break;
1454 }
1455 }
1456 if (!sta_exist) {
1457 if (free_index >= 0)
1458 sta_idx = free_index;
1459 }
1460 if (sta_idx < 0) {
1461 rsi_dbg(ERR_ZONE,
1462 "%s: Some problem reaching here...\n",
1463 __func__);
1464 status = -EINVAL;
1465 goto unlock;
1466 }
1467 rsta = &common->stations[sta_idx];
1468 rsta->sta = sta;
1469 rsta->sta_id = sta_idx;
1470 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1471 rsta->start_tx_aggr[cnt] = false;
1472 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1473 rsta->seq_start[cnt] = 0;
1474 if (!sta_exist) {
1475 rsi_dbg(INFO_ZONE, "New Station\n");
1476
1477 /* Send peer notify to device */
1478 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1479 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1480 sta->addr, sta->wme, sta->aid,
1481 sta, sta_idx, 0, vif);
1482
1483 if (common->key) {
1484 struct ieee80211_key_conf *key = common->key;
1485
1486 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1487 (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1488 rsi_hal_load_key(adapter->priv,
1489 key->key,
1490 key->keylen,
1491 RSI_PAIRWISE_KEY,
1492 key->keyidx,
1493 key->cipher,
1494 sta_idx,
1495 vif);
1496 }
1497
1498 common->num_stations++;
1499 }
1500 }
1501
1502 if ((vif->type == NL80211_IFTYPE_STATION) ||
1503 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1504 rsi_set_min_rate(hw, sta, common);
1505 if (sta->ht_cap.ht_supported) {
1506 common->vif_info[0].is_ht = true;
1507 common->bitrate_mask[NL80211_BAND_2GHZ] =
1508 sta->supp_rates[NL80211_BAND_2GHZ];
1509 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1510 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1511 common->vif_info[0].sgi = true;
1512 ieee80211_start_tx_ba_session(sta, 0, 0);
1513 }
1514 }
1515
1516unlock:
1517 mutex_unlock(&common->mutex);
1518
1519 return status;
1520}
1521
1522/**
1523 * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1524 * getting disconnected.
1525 * @hw: Pointer to the ieee80211_hw structure.
1526 * @vif: Pointer to the ieee80211_vif structure.
1527 * @sta: Pointer to the ieee80211_sta structure.
1528 *
1529 * Return: 0 on success, negative error codes on failure.
1530 */
1531static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1532 struct ieee80211_vif *vif,
1533 struct ieee80211_sta *sta)
1534{
1535 struct rsi_hw *adapter = hw->priv;
1536 struct rsi_common *common = adapter->priv;
1537 struct ieee80211_bss_conf *bss = &vif->bss_conf;
1538 struct rsi_sta *rsta;
1539
1540 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1541
1542 mutex_lock(&common->mutex);
1543
1544 if ((vif->type == NL80211_IFTYPE_AP) ||
1545 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1546 u8 sta_idx, cnt;
1547
1548 /* Send peer notify to device */
1549 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1550 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1551 rsta = &common->stations[sta_idx];
1552
1553 if (!rsta->sta)
1554 continue;
1555 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1556 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1557 sta->addr, sta->wme,
1558 sta->aid, sta, sta_idx,
1559 0, vif);
1560 rsta->sta = NULL;
1561 rsta->sta_id = -1;
1562 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1563 rsta->start_tx_aggr[cnt] = false;
1564 if (common->num_stations > 0)
1565 common->num_stations--;
1566 break;
1567 }
1568 }
1569 if (sta_idx >= common->max_stations)
1570 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1571 }
1572
1573 if ((vif->type == NL80211_IFTYPE_STATION) ||
1574 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1575 /* Resetting all the fields to default values */
1576 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1577 bss->qos = sta->wme;
1578 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1579 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1580 common->min_rate = 0xffff;
1581 common->vif_info[0].is_ht = false;
1582 common->vif_info[0].sgi = false;
1583 common->vif_info[0].seq_start = 0;
1584 common->secinfo.ptk_cipher = 0;
1585 common->secinfo.gtk_cipher = 0;
1586 if (!common->iface_down)
1587 rsi_send_rx_filter_frame(common, 0);
1588 }
1589 mutex_unlock(&common->mutex);
1590
1591 return 0;
1592}
1593
1594/**
1595 * rsi_mac80211_set_antenna() - This function is used to configure
1596 * tx and rx antennas.
1597 * @hw: Pointer to the ieee80211_hw structure.
1598 * @tx_ant: Bitmap for tx antenna
1599 * @rx_ant: Bitmap for rx antenna
1600 *
1601 * Return: 0 on success, Negative error code on failure.
1602 */
1603static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1604 u32 tx_ant, u32 rx_ant)
1605{
1606 struct rsi_hw *adapter = hw->priv;
1607 struct rsi_common *common = adapter->priv;
1608 u8 antenna = 0;
1609
1610 if (tx_ant > 1 || rx_ant > 1) {
1611 rsi_dbg(ERR_ZONE,
1612 "Invalid antenna selection (tx: %d, rx:%d)\n",
1613 tx_ant, rx_ant);
1614 rsi_dbg(ERR_ZONE,
1615 "Use 0 for int_ant, 1 for ext_ant\n");
1616 return -EINVAL;
1617 }
1618
1619 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1620 __func__, tx_ant, rx_ant);
1621
1622 mutex_lock(&common->mutex);
1623
1624 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1625 if (common->ant_in_use != antenna)
1626 if (rsi_set_antenna(common, antenna))
1627 goto fail_set_antenna;
1628
1629 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1630 tx_ant ? "UFL" : "INT");
1631
1632 common->ant_in_use = antenna;
1633
1634 mutex_unlock(&common->mutex);
1635
1636 return 0;
1637
1638fail_set_antenna:
1639 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1640 mutex_unlock(&common->mutex);
1641 return -EINVAL;
1642}
1643
1644/**
1645 * rsi_mac80211_get_antenna() - This function is used to configure
1646 * tx and rx antennas.
1647 *
1648 * @hw: Pointer to the ieee80211_hw structure.
1649 * @tx_ant: Bitmap for tx antenna
1650 * @rx_ant: Bitmap for rx antenna
1651 *
1652 * Return: 0 on success, negative error codes on failure.
1653 */
1654static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1655 u32 *tx_ant, u32 *rx_ant)
1656{
1657 struct rsi_hw *adapter = hw->priv;
1658 struct rsi_common *common = adapter->priv;
1659
1660 mutex_lock(&common->mutex);
1661
1662 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1663 *rx_ant = 0;
1664
1665 mutex_unlock(&common->mutex);
1666
1667 return 0;
1668}
1669
1670static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1671{
1672 switch (region_code) {
1673 case NL80211_DFS_FCC:
1674 return RSI_REGION_FCC;
1675 case NL80211_DFS_ETSI:
1676 return RSI_REGION_ETSI;
1677 case NL80211_DFS_JP:
1678 return RSI_REGION_TELEC;
1679 case NL80211_DFS_UNSET:
1680 return RSI_REGION_WORLD;
1681 }
1682 return RSI_REGION_WORLD;
1683}
1684
1685static void rsi_reg_notify(struct wiphy *wiphy,
1686 struct regulatory_request *request)
1687{
1688 struct ieee80211_supported_band *sband;
1689 struct ieee80211_channel *ch;
1690 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1691 struct rsi_hw * adapter = hw->priv;
1692 struct rsi_common *common = adapter->priv;
1693 int i;
1694
1695 mutex_lock(&common->mutex);
1696
1697 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1698 request->alpha2, request->dfs_region);
1699
1700 if (common->num_supp_bands > 1) {
1701 sband = wiphy->bands[NL80211_BAND_5GHZ];
1702
1703 for (i = 0; i < sband->n_channels; i++) {
1704 ch = &sband->channels[i];
1705 if (ch->flags & IEEE80211_CHAN_DISABLED)
1706 continue;
1707
1708 if (ch->flags & IEEE80211_CHAN_RADAR)
1709 ch->flags |= IEEE80211_CHAN_NO_IR;
1710 }
1711 }
1712 adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1713 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1714
1715 adapter->country[0] = request->alpha2[0];
1716 adapter->country[1] = request->alpha2[1];
1717
1718 mutex_unlock(&common->mutex);
1719}
1720
1721static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1722{
1723 struct rsi_hw *adapter = hw->priv;
1724 struct rsi_common *common = adapter->priv;
1725
1726 mutex_lock(&common->mutex);
1727 if (common->fsm_state != FSM_MAC_INIT_DONE)
1728 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1729 else
1730 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1731 mutex_unlock(&common->mutex);
1732}
1733
1734static void rsi_resume_conn_channel(struct rsi_common *common)
1735{
1736 struct rsi_hw *adapter = common->priv;
1737 struct ieee80211_vif *vif;
1738 int cnt;
1739
1740 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1741 vif = adapter->vifs[cnt];
1742 if (!vif)
1743 continue;
1744
1745 if ((vif->type == NL80211_IFTYPE_AP) ||
1746 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1747 rsi_switch_channel(adapter, vif);
1748 break;
1749 }
1750 if (((vif->type == NL80211_IFTYPE_STATION) ||
1751 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1752 vif->bss_conf.assoc) {
1753 rsi_switch_channel(adapter, vif);
1754 break;
1755 }
1756 }
1757}
1758
1759void rsi_roc_timeout(struct timer_list *t)
1760{
1761 struct rsi_common *common = from_timer(common, t, roc_timer);
1762
1763 rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1764
1765 mutex_lock(&common->mutex);
1766 ieee80211_remain_on_channel_expired(common->priv->hw);
1767
1768 if (timer_pending(&common->roc_timer))
1769 del_timer(&common->roc_timer);
1770
1771 rsi_resume_conn_channel(common);
1772 mutex_unlock(&common->mutex);
1773}
1774
1775static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1776 struct ieee80211_channel *chan, int duration,
1777 enum ieee80211_roc_type type)
1778{
1779 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv;
1780 struct rsi_common *common = (struct rsi_common *)adapter->priv;
1781 int status = 0;
1782
1783 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1784
1785 mutex_lock(&common->mutex);
1786 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1787 __func__, chan->hw_value, duration);
1788
1789 if (timer_pending(&common->roc_timer)) {
1790 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1791 del_timer(&common->roc_timer);
1792 }
1793 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1794 add_timer(&common->roc_timer);
1795
1796 /* Configure band */
1797 if (rsi_band_check(common, chan)) {
1798 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1799 status = -EINVAL;
1800 goto out;
1801 }
1802
1803 /* Configure channel */
1804 if (rsi_set_channel(common, chan)) {
1805 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1806 status = -EINVAL;
1807 goto out;
1808 }
1809
1810 common->roc_vif = vif;
1811 ieee80211_ready_on_channel(hw);
1812 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1813 __func__, chan->hw_value);
1814
1815out:
1816 mutex_unlock(&common->mutex);
1817
1818 return status;
1819}
1820
1821static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw,
1822 struct ieee80211_vif *vif)
1823{
1824 struct rsi_hw *adapter = hw->priv;
1825 struct rsi_common *common = adapter->priv;
1826
1827 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1828
1829 mutex_lock(&common->mutex);
1830 if (!timer_pending(&common->roc_timer)) {
1831 mutex_unlock(&common->mutex);
1832 return 0;
1833 }
1834
1835 del_timer(&common->roc_timer);
1836
1837 rsi_resume_conn_channel(common);
1838 mutex_unlock(&common->mutex);
1839
1840 return 0;
1841}
1842
1843#ifdef CONFIG_PM
1844static const struct wiphy_wowlan_support rsi_wowlan_support = {
1845 .flags = WIPHY_WOWLAN_ANY |
1846 WIPHY_WOWLAN_MAGIC_PKT |
1847 WIPHY_WOWLAN_DISCONNECT |
1848 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
1849 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1850 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1851 WIPHY_WOWLAN_4WAY_HANDSHAKE,
1852};
1853
1854static u16 rsi_wow_map_triggers(struct rsi_common *common,
1855 struct cfg80211_wowlan *wowlan)
1856{
1857 u16 wow_triggers = 0;
1858
1859 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1860
1861 if (wowlan->any)
1862 wow_triggers |= RSI_WOW_ANY;
1863 if (wowlan->magic_pkt)
1864 wow_triggers |= RSI_WOW_MAGIC_PKT;
1865 if (wowlan->disconnect)
1866 wow_triggers |= RSI_WOW_DISCONNECT;
1867 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1868 wowlan->four_way_handshake)
1869 wow_triggers |= RSI_WOW_GTK_REKEY;
1870
1871 return wow_triggers;
1872}
1873
1874int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1875{
1876 struct rsi_common *common = adapter->priv;
1877 u16 triggers = 0;
1878 u16 rx_filter_word = 0;
1879 struct ieee80211_bss_conf *bss = NULL;
1880
1881 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1882
1883 if (!adapter->vifs[0])
1884 return -EINVAL;
1885
1886 bss = &adapter->vifs[0]->bss_conf;
1887
1888 if (WARN_ON(!wowlan)) {
1889 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1890 return -EINVAL;
1891 }
1892
1893 common->wow_flags |= RSI_WOW_ENABLED;
1894 triggers = rsi_wow_map_triggers(common, wowlan);
1895 if (!triggers) {
1896 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1897 return -EINVAL;
1898 }
1899 if (!bss->assoc) {
1900 rsi_dbg(ERR_ZONE,
1901 "Cannot configure WoWLAN (Station not connected)\n");
1902 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1903 return 0;
1904 }
1905 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1906
1907 if (common->coex_mode > 1)
1908 rsi_disable_ps(adapter, adapter->vifs[0]);
1909
1910 rsi_send_wowlan_request(common, triggers, 1);
1911
1912 /**
1913 * Increase the beacon_miss threshold & keep-alive timers in
1914 * vap_update frame
1915 */
1916 rsi_send_vap_dynamic_update(common);
1917
1918 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1919 rsi_send_rx_filter_frame(common, rx_filter_word);
1920
1921 return 0;
1922}
1923EXPORT_SYMBOL(rsi_config_wowlan);
1924
1925static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1926 struct cfg80211_wowlan *wowlan)
1927{
1928 struct rsi_hw *adapter = hw->priv;
1929 struct rsi_common *common = adapter->priv;
1930
1931 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1932 mutex_lock(&common->mutex);
1933 if (rsi_config_wowlan(adapter, wowlan)) {
1934 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1935 mutex_unlock(&common->mutex);
1936 return 1;
1937 }
1938 mutex_unlock(&common->mutex);
1939
1940 return 0;
1941}
1942
1943static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1944{
1945 u16 rx_filter_word = 0;
1946 struct rsi_hw *adapter = hw->priv;
1947 struct rsi_common *common = adapter->priv;
1948
1949 common->wow_flags = 0;
1950
1951 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1952
1953 if (common->hibernate_resume) {
1954 common->mac_ops_resumed = true;
1955 /* Device need a complete restart of all MAC operations.
1956 * returning 1 will serve this purpose.
1957 */
1958 return 1;
1959 }
1960
1961 mutex_lock(&common->mutex);
1962 rsi_send_wowlan_request(common, 0, 0);
1963
1964 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1965 ALLOW_MGMT_ASSOC_PEER);
1966 rsi_send_rx_filter_frame(common, rx_filter_word);
1967 mutex_unlock(&common->mutex);
1968
1969 return 0;
1970}
1971
1972#endif
1973
1974static const struct ieee80211_ops mac80211_ops = {
1975 .tx = rsi_mac80211_tx,
1976 .start = rsi_mac80211_start,
1977 .stop = rsi_mac80211_stop,
1978 .add_interface = rsi_mac80211_add_interface,
1979 .remove_interface = rsi_mac80211_remove_interface,
1980 .config = rsi_mac80211_config,
1981 .bss_info_changed = rsi_mac80211_bss_info_changed,
1982 .conf_tx = rsi_mac80211_conf_tx,
1983 .configure_filter = rsi_mac80211_conf_filter,
1984 .set_key = rsi_mac80211_set_key,
1985 .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1986 .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1987 .ampdu_action = rsi_mac80211_ampdu_action,
1988 .sta_add = rsi_mac80211_sta_add,
1989 .sta_remove = rsi_mac80211_sta_remove,
1990 .set_antenna = rsi_mac80211_set_antenna,
1991 .get_antenna = rsi_mac80211_get_antenna,
1992 .rfkill_poll = rsi_mac80211_rfkill_poll,
1993 .remain_on_channel = rsi_mac80211_roc,
1994 .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1995#ifdef CONFIG_PM
1996 .suspend = rsi_mac80211_suspend,
1997 .resume = rsi_mac80211_resume,
1998#endif
1999 .hw_scan = rsi_mac80211_hw_scan_start,
2000 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan,
2001};
2002
2003/**
2004 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
2005 * @common: Pointer to the driver private structure.
2006 *
2007 * Return: 0 on success, negative error codes on failure.
2008 */
2009int rsi_mac80211_attach(struct rsi_common *common)
2010{
2011 int status = 0;
2012 struct ieee80211_hw *hw = NULL;
2013 struct wiphy *wiphy = NULL;
2014 struct rsi_hw *adapter = common->priv;
2015 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
2016
2017 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
2018
2019 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
2020 if (!hw) {
2021 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
2022 return -ENOMEM;
2023 }
2024
2025 wiphy = hw->wiphy;
2026
2027 SET_IEEE80211_DEV(hw, adapter->device);
2028
2029 hw->priv = adapter;
2030 adapter->hw = hw;
2031
2032 ieee80211_hw_set(hw, SIGNAL_DBM);
2033 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
2034 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2035 ieee80211_hw_set(hw, SUPPORTS_PS);
2036 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
2037
2038 hw->queues = MAX_HW_QUEUES;
2039 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
2040
2041 hw->max_rates = 1;
2042 hw->max_rate_tries = MAX_RETRIES;
2043 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
2044 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
2045
2046 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS;
2047 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS;
2048 hw->rate_control_algorithm = "AARF";
2049
2050 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
2051 ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
2052
2053 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2054 BIT(NL80211_IFTYPE_AP) |
2055 BIT(NL80211_IFTYPE_P2P_DEVICE) |
2056 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2057 BIT(NL80211_IFTYPE_P2P_GO);
2058
2059 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2060 wiphy->retry_short = RETRY_SHORT;
2061 wiphy->retry_long = RETRY_LONG;
2062 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
2063 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
2064 wiphy->flags = 0;
2065
2066 wiphy->available_antennas_rx = 1;
2067 wiphy->available_antennas_tx = 1;
2068
2069 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
2070 if (status)
2071 return status;
2072 wiphy->bands[NL80211_BAND_2GHZ] =
2073 &adapter->sbands[NL80211_BAND_2GHZ];
2074 if (common->num_supp_bands > 1) {
2075 status = rsi_register_rates_channels(adapter,
2076 NL80211_BAND_5GHZ);
2077 if (status)
2078 return status;
2079 wiphy->bands[NL80211_BAND_5GHZ] =
2080 &adapter->sbands[NL80211_BAND_5GHZ];
2081 }
2082
2083 /* AP Parameters */
2084 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
2085 common->max_stations = wiphy->max_ap_assoc_sta;
2086 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
2087 hw->sta_data_size = sizeof(struct rsi_sta);
2088
2089 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS;
2090 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN;
2091 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
2092 wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
2093 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
2094 wiphy->reg_notifier = rsi_reg_notify;
2095
2096#ifdef CONFIG_PM
2097 wiphy->wowlan = &rsi_wowlan_support;
2098#endif
2099
2100 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2101
2102 /* Wi-Fi direct parameters */
2103 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2104 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
2105 wiphy->max_remain_on_channel_duration = 10000;
2106 hw->max_listen_interval = 10;
2107 wiphy->iface_combinations = rsi_iface_combinations;
2108 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
2109
2110 if (common->coex_mode > 1)
2111 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2112
2113 status = ieee80211_register_hw(hw);
2114 if (status)
2115 return status;
2116
2117 return rsi_init_dbgfs(adapter);
2118}