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