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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2009-2012 Realtek Corporation.*/
3
4#include "wifi.h"
5#include "base.h"
6#include "ps.h"
7#include <linux/export.h>
8#include "btcoexist/rtl_btc.h"
9
10bool rtl_ps_enable_nic(struct ieee80211_hw *hw)
11{
12 struct rtl_priv *rtlpriv = rtl_priv(hw);
13 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
14 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
15 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
16
17 /*<1> reset trx ring */
18 if (rtlhal->interface == INTF_PCI)
19 rtlpriv->intf_ops->reset_trx_ring(hw);
20
21 if (is_hal_stop(rtlhal))
22 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
23 "Driver is already down!\n");
24
25 /*<2> Enable Adapter */
26 if (rtlpriv->cfg->ops->hw_init(hw))
27 return false;
28 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
29 &rtlmac->retry_long);
30 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
31
32 rtlpriv->cfg->ops->switch_channel(hw);
33 rtlpriv->cfg->ops->set_channel_access(hw);
34 rtlpriv->cfg->ops->set_bw_mode(hw,
35 cfg80211_get_chandef_type(&hw->conf.chandef));
36
37 /*<3> Enable Interrupt */
38 rtlpriv->cfg->ops->enable_interrupt(hw);
39
40 /*<enable timer> */
41 rtl_watch_dog_timer_callback(&rtlpriv->works.watchdog_timer);
42
43 return true;
44}
45EXPORT_SYMBOL(rtl_ps_enable_nic);
46
47bool rtl_ps_disable_nic(struct ieee80211_hw *hw)
48{
49 struct rtl_priv *rtlpriv = rtl_priv(hw);
50
51 /*<1> Stop all timer */
52 rtl_deinit_deferred_work(hw, true);
53
54 /*<2> Disable Interrupt */
55 rtlpriv->cfg->ops->disable_interrupt(hw);
56 tasklet_kill(&rtlpriv->works.irq_tasklet);
57
58 /*<3> Disable Adapter */
59 rtlpriv->cfg->ops->hw_disable(hw);
60
61 return true;
62}
63EXPORT_SYMBOL(rtl_ps_disable_nic);
64
65static bool rtl_ps_set_rf_state(struct ieee80211_hw *hw,
66 enum rf_pwrstate state_toset,
67 u32 changesource)
68{
69 struct rtl_priv *rtlpriv = rtl_priv(hw);
70 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
71 bool actionallowed = false;
72 u16 rfwait_cnt = 0;
73
74 /*Only one thread can change
75 *the RF state at one time, and others
76 *should wait to be executed.
77 */
78 while (true) {
79 spin_lock(&rtlpriv->locks.rf_ps_lock);
80 if (ppsc->rfchange_inprogress) {
81 spin_unlock(&rtlpriv->locks.rf_ps_lock);
82
83 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
84 "RF Change in progress! Wait to set..state_toset(%d).\n",
85 state_toset);
86
87 /* Set RF after the previous action is done. */
88 while (ppsc->rfchange_inprogress) {
89 rfwait_cnt++;
90 mdelay(1);
91 /*Wait too long, return false to avoid
92 *to be stuck here.
93 */
94 if (rfwait_cnt > 100)
95 return false;
96 }
97 } else {
98 ppsc->rfchange_inprogress = true;
99 spin_unlock(&rtlpriv->locks.rf_ps_lock);
100 break;
101 }
102 }
103
104 switch (state_toset) {
105 case ERFON:
106 ppsc->rfoff_reason &= (~changesource);
107
108 if ((changesource == RF_CHANGE_BY_HW) &&
109 (ppsc->hwradiooff)) {
110 ppsc->hwradiooff = false;
111 }
112
113 if (!ppsc->rfoff_reason) {
114 ppsc->rfoff_reason = 0;
115 actionallowed = true;
116 }
117
118 break;
119
120 case ERFOFF:
121
122 if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) {
123 ppsc->hwradiooff = true;
124 }
125
126 ppsc->rfoff_reason |= changesource;
127 actionallowed = true;
128 break;
129
130 case ERFSLEEP:
131 ppsc->rfoff_reason |= changesource;
132 actionallowed = true;
133 break;
134
135 default:
136 pr_err("switch case %#x not processed\n", state_toset);
137 break;
138 }
139
140 if (actionallowed)
141 rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset);
142
143 spin_lock(&rtlpriv->locks.rf_ps_lock);
144 ppsc->rfchange_inprogress = false;
145 spin_unlock(&rtlpriv->locks.rf_ps_lock);
146
147 return actionallowed;
148}
149
150static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw)
151{
152 struct rtl_priv *rtlpriv = rtl_priv(hw);
153 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
154 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
155
156 ppsc->swrf_processing = true;
157
158 if (ppsc->inactive_pwrstate == ERFON &&
159 rtlhal->interface == INTF_PCI) {
160 if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) &&
161 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
162 rtlpriv->intf_ops->disable_aspm(hw);
163 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
164 }
165 }
166
167 rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate,
168 RF_CHANGE_BY_IPS);
169
170 if (ppsc->inactive_pwrstate == ERFOFF &&
171 rtlhal->interface == INTF_PCI) {
172 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
173 !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
174 rtlpriv->intf_ops->enable_aspm(hw);
175 RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
176 }
177 }
178
179 ppsc->swrf_processing = false;
180}
181
182void rtl_ips_nic_off_wq_callback(struct work_struct *work)
183{
184 struct rtl_works *rtlworks = container_of(work, struct rtl_works,
185 ips_nic_off_wq.work);
186 struct ieee80211_hw *hw = rtlworks->hw;
187 struct rtl_priv *rtlpriv = rtl_priv(hw);
188 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
189 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
190 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
191 enum rf_pwrstate rtstate;
192
193 if (mac->opmode != NL80211_IFTYPE_STATION) {
194 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
195 "not station return\n");
196 return;
197 }
198
199 if (mac->p2p_in_use)
200 return;
201
202 if (mac->link_state > MAC80211_NOLINK)
203 return;
204
205 if (is_hal_stop(rtlhal))
206 return;
207
208 if (rtlpriv->sec.being_setkey)
209 return;
210
211 if (rtlpriv->cfg->ops->bt_coex_off_before_lps)
212 rtlpriv->cfg->ops->bt_coex_off_before_lps(hw);
213
214 if (ppsc->inactiveps) {
215 rtstate = ppsc->rfpwr_state;
216
217 /*
218 *Do not enter IPS in the following conditions:
219 *(1) RF is already OFF or Sleep
220 *(2) swrf_processing (indicates the IPS is still under going)
221 *(3) Connectted (only disconnected can trigger IPS)
222 *(4) IBSS (send Beacon)
223 *(5) AP mode (send Beacon)
224 *(6) monitor mode (rcv packet)
225 */
226
227 if (rtstate == ERFON &&
228 !ppsc->swrf_processing &&
229 (mac->link_state == MAC80211_NOLINK) &&
230 !mac->act_scanning) {
231 rtl_dbg(rtlpriv, COMP_RF, DBG_TRACE,
232 "IPSEnter(): Turn off RF\n");
233
234 ppsc->inactive_pwrstate = ERFOFF;
235 ppsc->in_powersavemode = true;
236
237 /* call before RF off */
238 if (rtlpriv->cfg->ops->get_btc_status())
239 rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
240 ppsc->inactive_pwrstate);
241
242 /*rtl_pci_reset_trx_ring(hw); */
243 _rtl_ps_inactive_ps(hw);
244 }
245 }
246}
247
248void rtl_ips_nic_off(struct ieee80211_hw *hw)
249{
250 struct rtl_priv *rtlpriv = rtl_priv(hw);
251
252 /* because when link with ap, mac80211 will ask us
253 * to disable nic quickly after scan before linking,
254 * this will cause link failed, so we delay 100ms here
255 */
256 queue_delayed_work(rtlpriv->works.rtl_wq,
257 &rtlpriv->works.ips_nic_off_wq, MSECS(100));
258}
259
260/* NOTICE: any opmode should exc nic_on, or disable without
261 * nic_on may something wrong, like adhoc TP
262 */
263void rtl_ips_nic_on(struct ieee80211_hw *hw)
264{
265 struct rtl_priv *rtlpriv = rtl_priv(hw);
266 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
267 enum rf_pwrstate rtstate;
268
269 cancel_delayed_work_sync(&rtlpriv->works.ips_nic_off_wq);
270
271 mutex_lock(&rtlpriv->locks.ips_mutex);
272 if (ppsc->inactiveps) {
273 rtstate = ppsc->rfpwr_state;
274
275 if (rtstate != ERFON &&
276 !ppsc->swrf_processing &&
277 ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) {
278
279 ppsc->inactive_pwrstate = ERFON;
280 ppsc->in_powersavemode = false;
281 _rtl_ps_inactive_ps(hw);
282 /* call after RF on */
283 if (rtlpriv->cfg->ops->get_btc_status())
284 rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
285 ppsc->inactive_pwrstate);
286 }
287 }
288 mutex_unlock(&rtlpriv->locks.ips_mutex);
289}
290EXPORT_SYMBOL_GPL(rtl_ips_nic_on);
291
292/*for FW LPS*/
293
294/*
295 *Determine if we can set Fw into PS mode
296 *in current condition.Return TRUE if it
297 *can enter PS mode.
298 */
299static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw)
300{
301 struct rtl_priv *rtlpriv = rtl_priv(hw);
302 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
303 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
304 u32 ps_timediff;
305
306 ps_timediff = jiffies_to_msecs(jiffies -
307 ppsc->last_delaylps_stamp_jiffies);
308
309 if (ps_timediff < 2000) {
310 rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
311 "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n");
312 return false;
313 }
314
315 if (mac->link_state != MAC80211_LINKED)
316 return false;
317
318 if (mac->opmode == NL80211_IFTYPE_ADHOC)
319 return false;
320
321 return true;
322}
323
324/* Change current and default preamble mode.*/
325void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode)
326{
327 struct rtl_priv *rtlpriv = rtl_priv(hw);
328 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
329 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
330 bool enter_fwlps;
331
332 if (mac->opmode == NL80211_IFTYPE_ADHOC)
333 return;
334
335 if (mac->link_state != MAC80211_LINKED)
336 return;
337
338 if (ppsc->dot11_psmode == rt_psmode && rt_psmode == EACTIVE)
339 return;
340
341 /* Update power save mode configured. */
342 ppsc->dot11_psmode = rt_psmode;
343
344 /*
345 *<FW control LPS>
346 *1. Enter PS mode
347 * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode
348 * cmd to set Fw into PS mode.
349 *2. Leave PS mode
350 * Send H2C fw_pwrmode cmd to Fw to set Fw into Active
351 * mode and set RPWM to turn RF on.
352 */
353
354 if ((ppsc->fwctrl_lps) && ppsc->report_linked) {
355 if (ppsc->dot11_psmode == EACTIVE) {
356 rtl_dbg(rtlpriv, COMP_RF, DBG_DMESG,
357 "FW LPS leave ps_mode:%x\n",
358 FW_PS_ACTIVE_MODE);
359 enter_fwlps = false;
360 ppsc->pwr_mode = FW_PS_ACTIVE_MODE;
361 ppsc->smart_ps = 0;
362 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_FW_LPS_ACTION,
363 (u8 *)(&enter_fwlps));
364 if (ppsc->p2p_ps_info.opp_ps)
365 rtl_p2p_ps_cmd(hw , P2P_PS_ENABLE);
366
367 if (rtlpriv->cfg->ops->get_btc_status())
368 rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
369 } else {
370 if (rtl_get_fwlps_doze(hw)) {
371 rtl_dbg(rtlpriv, COMP_RF, DBG_DMESG,
372 "FW LPS enter ps_mode:%x\n",
373 ppsc->fwctrl_psmode);
374 if (rtlpriv->cfg->ops->get_btc_status())
375 rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
376 enter_fwlps = true;
377 ppsc->pwr_mode = ppsc->fwctrl_psmode;
378 ppsc->smart_ps = 2;
379 rtlpriv->cfg->ops->set_hw_reg(hw,
380 HW_VAR_FW_LPS_ACTION,
381 (u8 *)(&enter_fwlps));
382
383 } else {
384 /* Reset the power save related parameters. */
385 ppsc->dot11_psmode = EACTIVE;
386 }
387 }
388 }
389}
390
391/* Interrupt safe routine to enter the leisure power save mode.*/
392static void rtl_lps_enter_core(struct ieee80211_hw *hw)
393{
394 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
395 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
396 struct rtl_priv *rtlpriv = rtl_priv(hw);
397
398 if (!ppsc->fwctrl_lps)
399 return;
400
401 if (rtlpriv->sec.being_setkey)
402 return;
403
404 if (rtlpriv->link_info.busytraffic)
405 return;
406
407 /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
408 if (mac->cnt_after_linked < 5)
409 return;
410
411 if (mac->opmode == NL80211_IFTYPE_ADHOC)
412 return;
413
414 if (mac->link_state != MAC80211_LINKED)
415 return;
416
417 mutex_lock(&rtlpriv->locks.lps_mutex);
418
419 /* Don't need to check (ppsc->dot11_psmode == EACTIVE), because
420 * bt_ccoexist may ask to enter lps.
421 * In normal case, this constraint move to rtl_lps_set_psmode().
422 */
423 rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
424 "Enter 802.11 power save mode...\n");
425 rtl_lps_set_psmode(hw, EAUTOPS);
426
427 mutex_unlock(&rtlpriv->locks.lps_mutex);
428}
429
430/* Interrupt safe routine to leave the leisure power save mode.*/
431static void rtl_lps_leave_core(struct ieee80211_hw *hw)
432{
433 struct rtl_priv *rtlpriv = rtl_priv(hw);
434 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
435 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
436
437 mutex_lock(&rtlpriv->locks.lps_mutex);
438
439 if (ppsc->fwctrl_lps) {
440 if (ppsc->dot11_psmode != EACTIVE) {
441
442 /*FIX ME */
443 /*rtlpriv->cfg->ops->enable_interrupt(hw); */
444
445 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
446 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
447 rtlhal->interface == INTF_PCI) {
448 rtlpriv->intf_ops->disable_aspm(hw);
449 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
450 }
451
452 rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
453 "Busy Traffic,Leave 802.11 power save..\n");
454
455 rtl_lps_set_psmode(hw, EACTIVE);
456 }
457 }
458 mutex_unlock(&rtlpriv->locks.lps_mutex);
459}
460
461/* For sw LPS*/
462void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len)
463{
464 struct rtl_priv *rtlpriv = rtl_priv(hw);
465 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
466 struct ieee80211_hdr *hdr = data;
467 struct ieee80211_tim_ie *tim_ie;
468 u8 *tim;
469 u8 tim_len;
470 bool u_buffed;
471 bool m_buffed;
472
473 if (mac->opmode != NL80211_IFTYPE_STATION)
474 return;
475
476 if (!rtlpriv->psc.swctrl_lps)
477 return;
478
479 if (rtlpriv->mac80211.link_state != MAC80211_LINKED)
480 return;
481
482 if (!rtlpriv->psc.sw_ps_enabled)
483 return;
484
485 if (rtlpriv->psc.fwctrl_lps)
486 return;
487
488 if (likely(!(hw->conf.flags & IEEE80211_CONF_PS)))
489 return;
490
491 /* check if this really is a beacon */
492 if (!ieee80211_is_beacon(hdr->frame_control))
493 return;
494
495 /* min. beacon length + FCS_LEN */
496 if (len <= 40 + FCS_LEN)
497 return;
498
499 /* and only beacons from the associated BSSID, please */
500 if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
501 return;
502
503 rtlpriv->psc.last_beacon = jiffies;
504
505 tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM);
506 if (!tim)
507 return;
508
509 if (tim[1] < sizeof(*tim_ie))
510 return;
511
512 tim_len = tim[1];
513 tim_ie = (struct ieee80211_tim_ie *) &tim[2];
514
515 if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period))
516 rtlpriv->psc.dtim_counter = tim_ie->dtim_count;
517
518 /* Check whenever the PHY can be turned off again. */
519
520 /* 1. What about buffered unicast traffic for our AID? */
521 u_buffed = ieee80211_check_tim(tim_ie, tim_len,
522 rtlpriv->mac80211.assoc_id);
523
524 /* 2. Maybe the AP wants to send multicast/broadcast data? */
525 m_buffed = tim_ie->bitmap_ctrl & 0x01;
526 rtlpriv->psc.multi_buffered = m_buffed;
527
528 /* unicast will process by mac80211 through
529 * set ~IEEE80211_CONF_PS, So we just check
530 * multicast frames here */
531 if (!m_buffed) {
532 /* back to low-power land. and delay is
533 * prevent null power save frame tx fail */
534 queue_delayed_work(rtlpriv->works.rtl_wq,
535 &rtlpriv->works.ps_work, MSECS(5));
536 } else {
537 rtl_dbg(rtlpriv, COMP_POWER, DBG_DMESG,
538 "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed);
539 }
540}
541EXPORT_SYMBOL_GPL(rtl_swlps_beacon);
542
543void rtl_swlps_rf_awake(struct ieee80211_hw *hw)
544{
545 struct rtl_priv *rtlpriv = rtl_priv(hw);
546 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
547 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
548
549 if (!rtlpriv->psc.swctrl_lps)
550 return;
551 if (mac->link_state != MAC80211_LINKED)
552 return;
553
554 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
555 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
556 rtlpriv->intf_ops->disable_aspm(hw);
557 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
558 }
559
560 mutex_lock(&rtlpriv->locks.lps_mutex);
561 rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS);
562 mutex_unlock(&rtlpriv->locks.lps_mutex);
563}
564
565void rtl_swlps_rfon_wq_callback(struct work_struct *work)
566{
567 struct rtl_works *rtlworks = container_of(work, struct rtl_works,
568 ps_rfon_wq.work);
569 struct ieee80211_hw *hw = rtlworks->hw;
570
571 rtl_swlps_rf_awake(hw);
572}
573
574void rtl_swlps_rf_sleep(struct ieee80211_hw *hw)
575{
576 struct rtl_priv *rtlpriv = rtl_priv(hw);
577 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
578 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
579 u8 sleep_intv;
580
581 if (!rtlpriv->psc.sw_ps_enabled)
582 return;
583
584 if ((rtlpriv->sec.being_setkey) ||
585 (mac->opmode == NL80211_IFTYPE_ADHOC))
586 return;
587
588 /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
589 if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5))
590 return;
591
592 if (rtlpriv->link_info.busytraffic)
593 return;
594
595 spin_lock(&rtlpriv->locks.rf_ps_lock);
596 if (rtlpriv->psc.rfchange_inprogress) {
597 spin_unlock(&rtlpriv->locks.rf_ps_lock);
598 return;
599 }
600 spin_unlock(&rtlpriv->locks.rf_ps_lock);
601
602 mutex_lock(&rtlpriv->locks.lps_mutex);
603 rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS);
604 mutex_unlock(&rtlpriv->locks.lps_mutex);
605
606 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
607 !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
608 rtlpriv->intf_ops->enable_aspm(hw);
609 RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
610 }
611
612 /* here is power save alg, when this beacon is DTIM
613 * we will set sleep time to dtim_period * n;
614 * when this beacon is not DTIM, we will set sleep
615 * time to sleep_intv = rtlpriv->psc.dtim_counter or
616 * MAX_SW_LPS_SLEEP_INTV(default set to 5) */
617
618 if (rtlpriv->psc.dtim_counter == 0) {
619 if (hw->conf.ps_dtim_period == 1)
620 sleep_intv = hw->conf.ps_dtim_period * 2;
621 else
622 sleep_intv = hw->conf.ps_dtim_period;
623 } else {
624 sleep_intv = rtlpriv->psc.dtim_counter;
625 }
626
627 if (sleep_intv > MAX_SW_LPS_SLEEP_INTV)
628 sleep_intv = MAX_SW_LPS_SLEEP_INTV;
629
630 /* this print should always be dtim_conter = 0 &
631 * sleep = dtim_period, that meaons, we should
632 * awake before every dtim */
633 rtl_dbg(rtlpriv, COMP_POWER, DBG_DMESG,
634 "dtim_counter:%x will sleep :%d beacon_intv\n",
635 rtlpriv->psc.dtim_counter, sleep_intv);
636
637 /* we tested that 40ms is enough for sw & hw sw delay */
638 queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq,
639 MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40));
640}
641
642void rtl_lps_change_work_callback(struct work_struct *work)
643{
644 struct rtl_works *rtlworks =
645 container_of(work, struct rtl_works, lps_change_work);
646 struct ieee80211_hw *hw = rtlworks->hw;
647 struct rtl_priv *rtlpriv = rtl_priv(hw);
648
649 if (rtlpriv->enter_ps)
650 rtl_lps_enter_core(hw);
651 else
652 rtl_lps_leave_core(hw);
653}
654EXPORT_SYMBOL_GPL(rtl_lps_change_work_callback);
655
656void rtl_lps_enter(struct ieee80211_hw *hw, bool may_block)
657{
658 struct rtl_priv *rtlpriv = rtl_priv(hw);
659
660 if (may_block)
661 return rtl_lps_enter_core(hw);
662 rtlpriv->enter_ps = true;
663 schedule_work(&rtlpriv->works.lps_change_work);
664}
665EXPORT_SYMBOL_GPL(rtl_lps_enter);
666
667void rtl_lps_leave(struct ieee80211_hw *hw, bool may_block)
668{
669 struct rtl_priv *rtlpriv = rtl_priv(hw);
670
671 if (may_block)
672 return rtl_lps_leave_core(hw);
673 rtlpriv->enter_ps = false;
674 schedule_work(&rtlpriv->works.lps_change_work);
675}
676EXPORT_SYMBOL_GPL(rtl_lps_leave);
677
678void rtl_swlps_wq_callback(struct work_struct *work)
679{
680 struct rtl_works *rtlworks = container_of(work, struct rtl_works,
681 ps_work.work);
682 struct ieee80211_hw *hw = rtlworks->hw;
683 struct rtl_priv *rtlpriv = rtl_priv(hw);
684
685 /* we can sleep after ps null send ok */
686 if (rtlpriv->psc.state_inap)
687 rtl_swlps_rf_sleep(hw);
688}
689
690static void rtl_p2p_noa_ie(struct ieee80211_hw *hw, void *data,
691 unsigned int len)
692{
693 struct rtl_priv *rtlpriv = rtl_priv(hw);
694 struct ieee80211_mgmt *mgmt = data;
695 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
696 u8 *pos, *end, *ie;
697 u16 noa_len;
698 static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
699 u8 noa_num, index , i, noa_index = 0;
700 bool find_p2p_ie = false , find_p2p_ps_ie = false;
701
702 pos = (u8 *)mgmt->u.beacon.variable;
703 end = data + len;
704 ie = NULL;
705
706 while (pos + 1 < end) {
707 if (pos + 2 + pos[1] > end)
708 return;
709
710 if (pos[0] == 221 && pos[1] > 4) {
711 if (memcmp(&pos[2], p2p_oui_ie_type, 4) == 0) {
712 ie = pos + 2+4;
713 break;
714 }
715 }
716 pos += 2 + pos[1];
717 }
718
719 if (ie == NULL)
720 return;
721 find_p2p_ie = true;
722 /*to find noa ie*/
723 while (ie + 1 < end) {
724 noa_len = le16_to_cpu(*((__le16 *)&ie[1]));
725 if (ie + 3 + ie[1] > end)
726 return;
727
728 if (ie[0] == 12) {
729 find_p2p_ps_ie = true;
730 if ((noa_len - 2) % 13 != 0) {
731 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
732 "P2P notice of absence: invalid length.%d\n",
733 noa_len);
734 return;
735 } else {
736 noa_num = (noa_len - 2) / 13;
737 if (noa_num > P2P_MAX_NOA_NUM)
738 noa_num = P2P_MAX_NOA_NUM;
739
740 }
741 noa_index = ie[3];
742 if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
743 P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
744 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD,
745 "update NOA ie.\n");
746 p2pinfo->noa_index = noa_index;
747 p2pinfo->opp_ps = (ie[4] >> 7);
748 p2pinfo->ctwindow = ie[4] & 0x7F;
749 p2pinfo->noa_num = noa_num;
750 index = 5;
751 for (i = 0; i < noa_num; i++) {
752 p2pinfo->noa_count_type[i] =
753 *(u8 *)(ie + index);
754 index += 1;
755 p2pinfo->noa_duration[i] =
756 le32_to_cpu(*(__le32 *)(ie + index));
757 index += 4;
758 p2pinfo->noa_interval[i] =
759 le32_to_cpu(*(__le32 *)(ie + index));
760 index += 4;
761 p2pinfo->noa_start_time[i] =
762 le32_to_cpu(*(__le32 *)(ie + index));
763 index += 4;
764 }
765
766 if (p2pinfo->opp_ps == 1) {
767 p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
768 /* Driver should wait LPS entering
769 * CTWindow
770 */
771 if (rtlpriv->psc.fw_current_inpsmode)
772 rtl_p2p_ps_cmd(hw,
773 P2P_PS_ENABLE);
774 } else if (p2pinfo->noa_num > 0) {
775 p2pinfo->p2p_ps_mode = P2P_PS_NOA;
776 rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
777 } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
778 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
779 }
780 }
781 break;
782 }
783 ie += 3 + noa_len;
784 }
785
786 if (find_p2p_ie) {
787 if ((p2pinfo->p2p_ps_mode > P2P_PS_NONE) &&
788 (!find_p2p_ps_ie))
789 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
790 }
791}
792
793static void rtl_p2p_action_ie(struct ieee80211_hw *hw, void *data,
794 unsigned int len)
795{
796 struct rtl_priv *rtlpriv = rtl_priv(hw);
797 struct ieee80211_mgmt *mgmt = data;
798 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
799 u8 noa_num, index , i , noa_index = 0;
800 u8 *pos, *end, *ie;
801 u16 noa_len;
802 static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
803
804 pos = (u8 *)&mgmt->u.action.category;
805 end = data + len;
806 ie = NULL;
807
808 if (pos[0] == 0x7f) {
809 if (memcmp(&pos[1], p2p_oui_ie_type, 4) == 0)
810 ie = pos + 3+4;
811 }
812
813 if (ie == NULL)
814 return;
815
816 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD, "action frame find P2P IE.\n");
817 /*to find noa ie*/
818 while (ie + 1 < end) {
819 noa_len = le16_to_cpu(*(__le16 *)&ie[1]);
820 if (ie + 3 + ie[1] > end)
821 return;
822
823 if (ie[0] == 12) {
824 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD, "find NOA IE.\n");
825 RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, "noa ie ",
826 ie, noa_len);
827 if ((noa_len - 2) % 13 != 0) {
828 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD,
829 "P2P notice of absence: invalid length.%d\n",
830 noa_len);
831 return;
832 } else {
833 noa_num = (noa_len - 2) / 13;
834 if (noa_num > P2P_MAX_NOA_NUM)
835 noa_num = P2P_MAX_NOA_NUM;
836
837 }
838 noa_index = ie[3];
839 if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
840 P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
841 p2pinfo->noa_index = noa_index;
842 p2pinfo->opp_ps = (ie[4] >> 7);
843 p2pinfo->ctwindow = ie[4] & 0x7F;
844 p2pinfo->noa_num = noa_num;
845 index = 5;
846 for (i = 0; i < noa_num; i++) {
847 p2pinfo->noa_count_type[i] =
848 *(u8 *)(ie + index);
849 index += 1;
850 p2pinfo->noa_duration[i] =
851 le32_to_cpu(*(__le32 *)(ie + index));
852 index += 4;
853 p2pinfo->noa_interval[i] =
854 le32_to_cpu(*(__le32 *)(ie + index));
855 index += 4;
856 p2pinfo->noa_start_time[i] =
857 le32_to_cpu(*(__le32 *)(ie + index));
858 index += 4;
859 }
860
861 if (p2pinfo->opp_ps == 1) {
862 p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
863 /* Driver should wait LPS entering
864 * CTWindow
865 */
866 if (rtlpriv->psc.fw_current_inpsmode)
867 rtl_p2p_ps_cmd(hw,
868 P2P_PS_ENABLE);
869 } else if (p2pinfo->noa_num > 0) {
870 p2pinfo->p2p_ps_mode = P2P_PS_NOA;
871 rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
872 } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
873 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
874 }
875 }
876 break;
877 }
878 ie += 3 + noa_len;
879 }
880}
881
882void rtl_p2p_ps_cmd(struct ieee80211_hw *hw , u8 p2p_ps_state)
883{
884 struct rtl_priv *rtlpriv = rtl_priv(hw);
885 struct rtl_ps_ctl *rtlps = rtl_psc(rtl_priv(hw));
886 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
887
888 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD, " p2p state %x\n", p2p_ps_state);
889 switch (p2p_ps_state) {
890 case P2P_PS_DISABLE:
891 p2pinfo->p2p_ps_state = p2p_ps_state;
892 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
893 &p2p_ps_state);
894 p2pinfo->noa_index = 0;
895 p2pinfo->ctwindow = 0;
896 p2pinfo->opp_ps = 0;
897 p2pinfo->noa_num = 0;
898 p2pinfo->p2p_ps_mode = P2P_PS_NONE;
899 if (rtlps->fw_current_inpsmode) {
900 if (rtlps->smart_ps == 0) {
901 rtlps->smart_ps = 2;
902 rtlpriv->cfg->ops->set_hw_reg(hw,
903 HW_VAR_H2C_FW_PWRMODE,
904 &rtlps->pwr_mode);
905 }
906
907 }
908 break;
909 case P2P_PS_ENABLE:
910 if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
911 p2pinfo->p2p_ps_state = p2p_ps_state;
912
913 if (p2pinfo->ctwindow > 0) {
914 if (rtlps->smart_ps != 0) {
915 rtlps->smart_ps = 0;
916 rtlpriv->cfg->ops->set_hw_reg(hw,
917 HW_VAR_H2C_FW_PWRMODE,
918 &rtlps->pwr_mode);
919 }
920 }
921 rtlpriv->cfg->ops->set_hw_reg(hw,
922 HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
923 &p2p_ps_state);
924
925 }
926 break;
927 case P2P_PS_SCAN:
928 case P2P_PS_SCAN_DONE:
929 case P2P_PS_ALLSTASLEEP:
930 if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
931 p2pinfo->p2p_ps_state = p2p_ps_state;
932 rtlpriv->cfg->ops->set_hw_reg(hw,
933 HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
934 &p2p_ps_state);
935 }
936 break;
937 default:
938 break;
939 }
940 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD,
941 "ctwindow %x oppps %x\n",
942 p2pinfo->ctwindow, p2pinfo->opp_ps);
943 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD,
944 "count %x duration %x index %x interval %x start time %x noa num %x\n",
945 p2pinfo->noa_count_type[0],
946 p2pinfo->noa_duration[0],
947 p2pinfo->noa_index,
948 p2pinfo->noa_interval[0],
949 p2pinfo->noa_start_time[0],
950 p2pinfo->noa_num);
951 rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD, "end\n");
952}
953
954void rtl_p2p_info(struct ieee80211_hw *hw, void *data, unsigned int len)
955{
956 struct rtl_priv *rtlpriv = rtl_priv(hw);
957 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
958 struct ieee80211_hdr *hdr = data;
959
960 if (!mac->p2p)
961 return;
962 if (mac->link_state != MAC80211_LINKED)
963 return;
964 /* min. beacon length + FCS_LEN */
965 if (len <= 40 + FCS_LEN)
966 return;
967
968 /* and only beacons from the associated BSSID, please */
969 if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
970 return;
971
972 /* check if this really is a beacon */
973 if (!(ieee80211_is_beacon(hdr->frame_control) ||
974 ieee80211_is_probe_resp(hdr->frame_control) ||
975 ieee80211_is_action(hdr->frame_control)))
976 return;
977
978 if (ieee80211_is_action(hdr->frame_control))
979 rtl_p2p_action_ie(hw , data , len - FCS_LEN);
980 else
981 rtl_p2p_noa_ie(hw , data , len - FCS_LEN);
982}
983EXPORT_SYMBOL_GPL(rtl_p2p_info);
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2009-2012 Realtek Corporation.*/
3
4#include "wifi.h"
5#include "base.h"
6#include "ps.h"
7#include <linux/export.h>
8#include "btcoexist/rtl_btc.h"
9
10bool rtl_ps_enable_nic(struct ieee80211_hw *hw)
11{
12 struct rtl_priv *rtlpriv = rtl_priv(hw);
13 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
14 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
15 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
16
17 /*<1> reset trx ring */
18 if (rtlhal->interface == INTF_PCI)
19 rtlpriv->intf_ops->reset_trx_ring(hw);
20
21 if (is_hal_stop(rtlhal))
22 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
23 "Driver is already down!\n");
24
25 /*<2> Enable Adapter */
26 if (rtlpriv->cfg->ops->hw_init(hw))
27 return false;
28 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
29 &rtlmac->retry_long);
30 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
31
32 rtlpriv->cfg->ops->switch_channel(hw);
33 rtlpriv->cfg->ops->set_channel_access(hw);
34 rtlpriv->cfg->ops->set_bw_mode(hw,
35 cfg80211_get_chandef_type(&hw->conf.chandef));
36
37 /*<3> Enable Interrupt */
38 rtlpriv->cfg->ops->enable_interrupt(hw);
39
40 /*<enable timer> */
41 rtl_watch_dog_timer_callback(&rtlpriv->works.watchdog_timer);
42
43 return true;
44}
45EXPORT_SYMBOL(rtl_ps_enable_nic);
46
47bool rtl_ps_disable_nic(struct ieee80211_hw *hw)
48{
49 struct rtl_priv *rtlpriv = rtl_priv(hw);
50
51 /*<1> Stop all timer */
52 rtl_deinit_deferred_work(hw, true);
53
54 /*<2> Disable Interrupt */
55 rtlpriv->cfg->ops->disable_interrupt(hw);
56 tasklet_kill(&rtlpriv->works.irq_tasklet);
57
58 /*<3> Disable Adapter */
59 rtlpriv->cfg->ops->hw_disable(hw);
60
61 return true;
62}
63EXPORT_SYMBOL(rtl_ps_disable_nic);
64
65static bool rtl_ps_set_rf_state(struct ieee80211_hw *hw,
66 enum rf_pwrstate state_toset,
67 u32 changesource)
68{
69 struct rtl_priv *rtlpriv = rtl_priv(hw);
70 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
71 enum rf_pwrstate rtstate;
72 bool actionallowed = false;
73 u16 rfwait_cnt = 0;
74
75 /*Only one thread can change
76 *the RF state at one time, and others
77 *should wait to be executed.
78 */
79 while (true) {
80 spin_lock(&rtlpriv->locks.rf_ps_lock);
81 if (ppsc->rfchange_inprogress) {
82 spin_unlock(&rtlpriv->locks.rf_ps_lock);
83
84 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
85 "RF Change in progress! Wait to set..state_toset(%d).\n",
86 state_toset);
87
88 /* Set RF after the previous action is done. */
89 while (ppsc->rfchange_inprogress) {
90 rfwait_cnt++;
91 mdelay(1);
92 /*Wait too long, return false to avoid
93 *to be stuck here.
94 */
95 if (rfwait_cnt > 100)
96 return false;
97 }
98 } else {
99 ppsc->rfchange_inprogress = true;
100 spin_unlock(&rtlpriv->locks.rf_ps_lock);
101 break;
102 }
103 }
104
105 rtstate = ppsc->rfpwr_state;
106
107 switch (state_toset) {
108 case ERFON:
109 ppsc->rfoff_reason &= (~changesource);
110
111 if ((changesource == RF_CHANGE_BY_HW) &&
112 (ppsc->hwradiooff)) {
113 ppsc->hwradiooff = false;
114 }
115
116 if (!ppsc->rfoff_reason) {
117 ppsc->rfoff_reason = 0;
118 actionallowed = true;
119 }
120
121 break;
122
123 case ERFOFF:
124
125 if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) {
126 ppsc->hwradiooff = true;
127 }
128
129 ppsc->rfoff_reason |= changesource;
130 actionallowed = true;
131 break;
132
133 case ERFSLEEP:
134 ppsc->rfoff_reason |= changesource;
135 actionallowed = true;
136 break;
137
138 default:
139 pr_err("switch case %#x not processed\n", state_toset);
140 break;
141 }
142
143 if (actionallowed)
144 rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset);
145
146 spin_lock(&rtlpriv->locks.rf_ps_lock);
147 ppsc->rfchange_inprogress = false;
148 spin_unlock(&rtlpriv->locks.rf_ps_lock);
149
150 return actionallowed;
151}
152
153static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw)
154{
155 struct rtl_priv *rtlpriv = rtl_priv(hw);
156 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
157 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
158
159 ppsc->swrf_processing = true;
160
161 if (ppsc->inactive_pwrstate == ERFON &&
162 rtlhal->interface == INTF_PCI) {
163 if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) &&
164 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
165 rtlhal->interface == INTF_PCI) {
166 rtlpriv->intf_ops->disable_aspm(hw);
167 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
168 }
169 }
170
171 rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate,
172 RF_CHANGE_BY_IPS);
173
174 if (ppsc->inactive_pwrstate == ERFOFF &&
175 rtlhal->interface == INTF_PCI) {
176 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
177 !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
178 rtlpriv->intf_ops->enable_aspm(hw);
179 RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
180 }
181 }
182
183 ppsc->swrf_processing = false;
184}
185
186void rtl_ips_nic_off_wq_callback(void *data)
187{
188 struct rtl_works *rtlworks =
189 container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq);
190 struct ieee80211_hw *hw = rtlworks->hw;
191 struct rtl_priv *rtlpriv = rtl_priv(hw);
192 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
193 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
194 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
195 enum rf_pwrstate rtstate;
196
197 if (mac->opmode != NL80211_IFTYPE_STATION) {
198 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
199 "not station return\n");
200 return;
201 }
202
203 if (mac->p2p_in_use)
204 return;
205
206 if (mac->link_state > MAC80211_NOLINK)
207 return;
208
209 if (is_hal_stop(rtlhal))
210 return;
211
212 if (rtlpriv->sec.being_setkey)
213 return;
214
215 if (rtlpriv->cfg->ops->bt_coex_off_before_lps)
216 rtlpriv->cfg->ops->bt_coex_off_before_lps(hw);
217
218 if (ppsc->inactiveps) {
219 rtstate = ppsc->rfpwr_state;
220
221 /*
222 *Do not enter IPS in the following conditions:
223 *(1) RF is already OFF or Sleep
224 *(2) swrf_processing (indicates the IPS is still under going)
225 *(3) Connectted (only disconnected can trigger IPS)
226 *(4) IBSS (send Beacon)
227 *(5) AP mode (send Beacon)
228 *(6) monitor mode (rcv packet)
229 */
230
231 if (rtstate == ERFON &&
232 !ppsc->swrf_processing &&
233 (mac->link_state == MAC80211_NOLINK) &&
234 !mac->act_scanning) {
235 RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
236 "IPSEnter(): Turn off RF\n");
237
238 ppsc->inactive_pwrstate = ERFOFF;
239 ppsc->in_powersavemode = true;
240
241 /* call before RF off */
242 if (rtlpriv->cfg->ops->get_btc_status())
243 rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
244 ppsc->inactive_pwrstate);
245
246 /*rtl_pci_reset_trx_ring(hw); */
247 _rtl_ps_inactive_ps(hw);
248 }
249 }
250}
251
252void rtl_ips_nic_off(struct ieee80211_hw *hw)
253{
254 struct rtl_priv *rtlpriv = rtl_priv(hw);
255
256 /* because when link with ap, mac80211 will ask us
257 * to disable nic quickly after scan before linking,
258 * this will cause link failed, so we delay 100ms here
259 */
260 queue_delayed_work(rtlpriv->works.rtl_wq,
261 &rtlpriv->works.ips_nic_off_wq, MSECS(100));
262}
263
264/* NOTICE: any opmode should exc nic_on, or disable without
265 * nic_on may something wrong, like adhoc TP
266 */
267void rtl_ips_nic_on(struct ieee80211_hw *hw)
268{
269 struct rtl_priv *rtlpriv = rtl_priv(hw);
270 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
271 enum rf_pwrstate rtstate;
272
273 cancel_delayed_work_sync(&rtlpriv->works.ips_nic_off_wq);
274
275 mutex_lock(&rtlpriv->locks.ips_mutex);
276 if (ppsc->inactiveps) {
277 rtstate = ppsc->rfpwr_state;
278
279 if (rtstate != ERFON &&
280 !ppsc->swrf_processing &&
281 ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) {
282
283 ppsc->inactive_pwrstate = ERFON;
284 ppsc->in_powersavemode = false;
285 _rtl_ps_inactive_ps(hw);
286 /* call after RF on */
287 if (rtlpriv->cfg->ops->get_btc_status())
288 rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
289 ppsc->inactive_pwrstate);
290 }
291 }
292 mutex_unlock(&rtlpriv->locks.ips_mutex);
293}
294EXPORT_SYMBOL_GPL(rtl_ips_nic_on);
295
296/*for FW LPS*/
297
298/*
299 *Determine if we can set Fw into PS mode
300 *in current condition.Return TRUE if it
301 *can enter PS mode.
302 */
303static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw)
304{
305 struct rtl_priv *rtlpriv = rtl_priv(hw);
306 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
307 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
308 u32 ps_timediff;
309
310 ps_timediff = jiffies_to_msecs(jiffies -
311 ppsc->last_delaylps_stamp_jiffies);
312
313 if (ps_timediff < 2000) {
314 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
315 "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n");
316 return false;
317 }
318
319 if (mac->link_state != MAC80211_LINKED)
320 return false;
321
322 if (mac->opmode == NL80211_IFTYPE_ADHOC)
323 return false;
324
325 return true;
326}
327
328/* Change current and default preamble mode.*/
329void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode)
330{
331 struct rtl_priv *rtlpriv = rtl_priv(hw);
332 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
333 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
334 bool enter_fwlps;
335
336 if (mac->opmode == NL80211_IFTYPE_ADHOC)
337 return;
338
339 if (mac->link_state != MAC80211_LINKED)
340 return;
341
342 if (ppsc->dot11_psmode == rt_psmode && rt_psmode == EACTIVE)
343 return;
344
345 /* Update power save mode configured. */
346 ppsc->dot11_psmode = rt_psmode;
347
348 /*
349 *<FW control LPS>
350 *1. Enter PS mode
351 * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode
352 * cmd to set Fw into PS mode.
353 *2. Leave PS mode
354 * Send H2C fw_pwrmode cmd to Fw to set Fw into Active
355 * mode and set RPWM to turn RF on.
356 */
357
358 if ((ppsc->fwctrl_lps) && ppsc->report_linked) {
359 if (ppsc->dot11_psmode == EACTIVE) {
360 RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
361 "FW LPS leave ps_mode:%x\n",
362 FW_PS_ACTIVE_MODE);
363 enter_fwlps = false;
364 ppsc->pwr_mode = FW_PS_ACTIVE_MODE;
365 ppsc->smart_ps = 0;
366 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_FW_LPS_ACTION,
367 (u8 *)(&enter_fwlps));
368 if (ppsc->p2p_ps_info.opp_ps)
369 rtl_p2p_ps_cmd(hw , P2P_PS_ENABLE);
370
371 if (rtlpriv->cfg->ops->get_btc_status())
372 rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
373 } else {
374 if (rtl_get_fwlps_doze(hw)) {
375 RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
376 "FW LPS enter ps_mode:%x\n",
377 ppsc->fwctrl_psmode);
378 if (rtlpriv->cfg->ops->get_btc_status())
379 rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
380 enter_fwlps = true;
381 ppsc->pwr_mode = ppsc->fwctrl_psmode;
382 ppsc->smart_ps = 2;
383 rtlpriv->cfg->ops->set_hw_reg(hw,
384 HW_VAR_FW_LPS_ACTION,
385 (u8 *)(&enter_fwlps));
386
387 } else {
388 /* Reset the power save related parameters. */
389 ppsc->dot11_psmode = EACTIVE;
390 }
391 }
392 }
393}
394
395/* Interrupt safe routine to enter the leisure power save mode.*/
396static void rtl_lps_enter_core(struct ieee80211_hw *hw)
397{
398 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
399 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
400 struct rtl_priv *rtlpriv = rtl_priv(hw);
401
402 if (!ppsc->fwctrl_lps)
403 return;
404
405 if (rtlpriv->sec.being_setkey)
406 return;
407
408 if (rtlpriv->link_info.busytraffic)
409 return;
410
411 /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
412 if (mac->cnt_after_linked < 5)
413 return;
414
415 if (mac->opmode == NL80211_IFTYPE_ADHOC)
416 return;
417
418 if (mac->link_state != MAC80211_LINKED)
419 return;
420
421 mutex_lock(&rtlpriv->locks.lps_mutex);
422
423 /* Don't need to check (ppsc->dot11_psmode == EACTIVE), because
424 * bt_ccoexist may ask to enter lps.
425 * In normal case, this constraint move to rtl_lps_set_psmode().
426 */
427 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
428 "Enter 802.11 power save mode...\n");
429 rtl_lps_set_psmode(hw, EAUTOPS);
430
431 mutex_unlock(&rtlpriv->locks.lps_mutex);
432}
433
434/* Interrupt safe routine to leave the leisure power save mode.*/
435static void rtl_lps_leave_core(struct ieee80211_hw *hw)
436{
437 struct rtl_priv *rtlpriv = rtl_priv(hw);
438 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
439 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
440
441 mutex_lock(&rtlpriv->locks.lps_mutex);
442
443 if (ppsc->fwctrl_lps) {
444 if (ppsc->dot11_psmode != EACTIVE) {
445
446 /*FIX ME */
447 /*rtlpriv->cfg->ops->enable_interrupt(hw); */
448
449 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
450 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
451 rtlhal->interface == INTF_PCI) {
452 rtlpriv->intf_ops->disable_aspm(hw);
453 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
454 }
455
456 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
457 "Busy Traffic,Leave 802.11 power save..\n");
458
459 rtl_lps_set_psmode(hw, EACTIVE);
460 }
461 }
462 mutex_unlock(&rtlpriv->locks.lps_mutex);
463}
464
465/* For sw LPS*/
466void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len)
467{
468 struct rtl_priv *rtlpriv = rtl_priv(hw);
469 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
470 struct ieee80211_hdr *hdr = data;
471 struct ieee80211_tim_ie *tim_ie;
472 u8 *tim;
473 u8 tim_len;
474 bool u_buffed;
475 bool m_buffed;
476
477 if (mac->opmode != NL80211_IFTYPE_STATION)
478 return;
479
480 if (!rtlpriv->psc.swctrl_lps)
481 return;
482
483 if (rtlpriv->mac80211.link_state != MAC80211_LINKED)
484 return;
485
486 if (!rtlpriv->psc.sw_ps_enabled)
487 return;
488
489 if (rtlpriv->psc.fwctrl_lps)
490 return;
491
492 if (likely(!(hw->conf.flags & IEEE80211_CONF_PS)))
493 return;
494
495 /* check if this really is a beacon */
496 if (!ieee80211_is_beacon(hdr->frame_control))
497 return;
498
499 /* min. beacon length + FCS_LEN */
500 if (len <= 40 + FCS_LEN)
501 return;
502
503 /* and only beacons from the associated BSSID, please */
504 if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
505 return;
506
507 rtlpriv->psc.last_beacon = jiffies;
508
509 tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM);
510 if (!tim)
511 return;
512
513 if (tim[1] < sizeof(*tim_ie))
514 return;
515
516 tim_len = tim[1];
517 tim_ie = (struct ieee80211_tim_ie *) &tim[2];
518
519 if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period))
520 rtlpriv->psc.dtim_counter = tim_ie->dtim_count;
521
522 /* Check whenever the PHY can be turned off again. */
523
524 /* 1. What about buffered unicast traffic for our AID? */
525 u_buffed = ieee80211_check_tim(tim_ie, tim_len,
526 rtlpriv->mac80211.assoc_id);
527
528 /* 2. Maybe the AP wants to send multicast/broadcast data? */
529 m_buffed = tim_ie->bitmap_ctrl & 0x01;
530 rtlpriv->psc.multi_buffered = m_buffed;
531
532 /* unicast will process by mac80211 through
533 * set ~IEEE80211_CONF_PS, So we just check
534 * multicast frames here */
535 if (!m_buffed) {
536 /* back to low-power land. and delay is
537 * prevent null power save frame tx fail */
538 queue_delayed_work(rtlpriv->works.rtl_wq,
539 &rtlpriv->works.ps_work, MSECS(5));
540 } else {
541 RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
542 "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed);
543 }
544}
545EXPORT_SYMBOL_GPL(rtl_swlps_beacon);
546
547void rtl_swlps_rf_awake(struct ieee80211_hw *hw)
548{
549 struct rtl_priv *rtlpriv = rtl_priv(hw);
550 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
551 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
552
553 if (!rtlpriv->psc.swctrl_lps)
554 return;
555 if (mac->link_state != MAC80211_LINKED)
556 return;
557
558 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
559 RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
560 rtlpriv->intf_ops->disable_aspm(hw);
561 RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
562 }
563
564 mutex_lock(&rtlpriv->locks.lps_mutex);
565 rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS);
566 mutex_unlock(&rtlpriv->locks.lps_mutex);
567}
568
569void rtl_swlps_rfon_wq_callback(void *data)
570{
571 struct rtl_works *rtlworks =
572 container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq);
573 struct ieee80211_hw *hw = rtlworks->hw;
574
575 rtl_swlps_rf_awake(hw);
576}
577
578void rtl_swlps_rf_sleep(struct ieee80211_hw *hw)
579{
580 struct rtl_priv *rtlpriv = rtl_priv(hw);
581 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
582 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
583 u8 sleep_intv;
584
585 if (!rtlpriv->psc.sw_ps_enabled)
586 return;
587
588 if ((rtlpriv->sec.being_setkey) ||
589 (mac->opmode == NL80211_IFTYPE_ADHOC))
590 return;
591
592 /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
593 if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5))
594 return;
595
596 if (rtlpriv->link_info.busytraffic)
597 return;
598
599 spin_lock(&rtlpriv->locks.rf_ps_lock);
600 if (rtlpriv->psc.rfchange_inprogress) {
601 spin_unlock(&rtlpriv->locks.rf_ps_lock);
602 return;
603 }
604 spin_unlock(&rtlpriv->locks.rf_ps_lock);
605
606 mutex_lock(&rtlpriv->locks.lps_mutex);
607 rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS);
608 mutex_unlock(&rtlpriv->locks.lps_mutex);
609
610 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
611 !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
612 rtlpriv->intf_ops->enable_aspm(hw);
613 RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
614 }
615
616 /* here is power save alg, when this beacon is DTIM
617 * we will set sleep time to dtim_period * n;
618 * when this beacon is not DTIM, we will set sleep
619 * time to sleep_intv = rtlpriv->psc.dtim_counter or
620 * MAX_SW_LPS_SLEEP_INTV(default set to 5) */
621
622 if (rtlpriv->psc.dtim_counter == 0) {
623 if (hw->conf.ps_dtim_period == 1)
624 sleep_intv = hw->conf.ps_dtim_period * 2;
625 else
626 sleep_intv = hw->conf.ps_dtim_period;
627 } else {
628 sleep_intv = rtlpriv->psc.dtim_counter;
629 }
630
631 if (sleep_intv > MAX_SW_LPS_SLEEP_INTV)
632 sleep_intv = MAX_SW_LPS_SLEEP_INTV;
633
634 /* this print should always be dtim_conter = 0 &
635 * sleep = dtim_period, that meaons, we should
636 * awake before every dtim */
637 RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
638 "dtim_counter:%x will sleep :%d beacon_intv\n",
639 rtlpriv->psc.dtim_counter, sleep_intv);
640
641 /* we tested that 40ms is enough for sw & hw sw delay */
642 queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq,
643 MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40));
644}
645
646void rtl_lps_change_work_callback(struct work_struct *work)
647{
648 struct rtl_works *rtlworks =
649 container_of(work, struct rtl_works, lps_change_work);
650 struct ieee80211_hw *hw = rtlworks->hw;
651 struct rtl_priv *rtlpriv = rtl_priv(hw);
652
653 if (rtlpriv->enter_ps)
654 rtl_lps_enter_core(hw);
655 else
656 rtl_lps_leave_core(hw);
657}
658EXPORT_SYMBOL_GPL(rtl_lps_change_work_callback);
659
660void rtl_lps_enter(struct ieee80211_hw *hw)
661{
662 struct rtl_priv *rtlpriv = rtl_priv(hw);
663
664 if (!in_interrupt())
665 return rtl_lps_enter_core(hw);
666 rtlpriv->enter_ps = true;
667 schedule_work(&rtlpriv->works.lps_change_work);
668}
669EXPORT_SYMBOL_GPL(rtl_lps_enter);
670
671void rtl_lps_leave(struct ieee80211_hw *hw)
672{
673 struct rtl_priv *rtlpriv = rtl_priv(hw);
674
675 if (!in_interrupt())
676 return rtl_lps_leave_core(hw);
677 rtlpriv->enter_ps = false;
678 schedule_work(&rtlpriv->works.lps_change_work);
679}
680EXPORT_SYMBOL_GPL(rtl_lps_leave);
681
682void rtl_swlps_wq_callback(void *data)
683{
684 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
685 struct rtl_works,
686 ps_work);
687 struct ieee80211_hw *hw = rtlworks->hw;
688 struct rtl_priv *rtlpriv = rtl_priv(hw);
689 bool ps = false;
690
691 ps = (hw->conf.flags & IEEE80211_CONF_PS);
692
693 /* we can sleep after ps null send ok */
694 if (rtlpriv->psc.state_inap) {
695 rtl_swlps_rf_sleep(hw);
696
697 if (rtlpriv->psc.state && !ps) {
698 rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies -
699 rtlpriv->psc.last_action);
700 }
701
702 if (ps)
703 rtlpriv->psc.last_slept = jiffies;
704
705 rtlpriv->psc.last_action = jiffies;
706 rtlpriv->psc.state = ps;
707 }
708}
709
710static void rtl_p2p_noa_ie(struct ieee80211_hw *hw, void *data,
711 unsigned int len)
712{
713 struct rtl_priv *rtlpriv = rtl_priv(hw);
714 struct ieee80211_mgmt *mgmt = data;
715 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
716 u8 *pos, *end, *ie;
717 u16 noa_len;
718 static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
719 u8 noa_num, index , i, noa_index = 0;
720 bool find_p2p_ie = false , find_p2p_ps_ie = false;
721
722 pos = (u8 *)mgmt->u.beacon.variable;
723 end = data + len;
724 ie = NULL;
725
726 while (pos + 1 < end) {
727 if (pos + 2 + pos[1] > end)
728 return;
729
730 if (pos[0] == 221 && pos[1] > 4) {
731 if (memcmp(&pos[2], p2p_oui_ie_type, 4) == 0) {
732 ie = pos + 2+4;
733 break;
734 }
735 }
736 pos += 2 + pos[1];
737 }
738
739 if (ie == NULL)
740 return;
741 find_p2p_ie = true;
742 /*to find noa ie*/
743 while (ie + 1 < end) {
744 noa_len = READEF2BYTE((__le16 *)&ie[1]);
745 if (ie + 3 + ie[1] > end)
746 return;
747
748 if (ie[0] == 12) {
749 find_p2p_ps_ie = true;
750 if ((noa_len - 2) % 13 != 0) {
751 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
752 "P2P notice of absence: invalid length.%d\n",
753 noa_len);
754 return;
755 } else {
756 noa_num = (noa_len - 2) / 13;
757 if (noa_num > P2P_MAX_NOA_NUM)
758 noa_num = P2P_MAX_NOA_NUM;
759
760 }
761 noa_index = ie[3];
762 if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
763 P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
764 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
765 "update NOA ie.\n");
766 p2pinfo->noa_index = noa_index;
767 p2pinfo->opp_ps = (ie[4] >> 7);
768 p2pinfo->ctwindow = ie[4] & 0x7F;
769 p2pinfo->noa_num = noa_num;
770 index = 5;
771 for (i = 0; i < noa_num; i++) {
772 p2pinfo->noa_count_type[i] =
773 READEF1BYTE(ie+index);
774 index += 1;
775 p2pinfo->noa_duration[i] =
776 READEF4BYTE((__le32 *)ie+index);
777 index += 4;
778 p2pinfo->noa_interval[i] =
779 READEF4BYTE((__le32 *)ie+index);
780 index += 4;
781 p2pinfo->noa_start_time[i] =
782 READEF4BYTE((__le32 *)ie+index);
783 index += 4;
784 }
785
786 if (p2pinfo->opp_ps == 1) {
787 p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
788 /* Driver should wait LPS entering
789 * CTWindow
790 */
791 if (rtlpriv->psc.fw_current_inpsmode)
792 rtl_p2p_ps_cmd(hw,
793 P2P_PS_ENABLE);
794 } else if (p2pinfo->noa_num > 0) {
795 p2pinfo->p2p_ps_mode = P2P_PS_NOA;
796 rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
797 } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
798 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
799 }
800 }
801 break;
802 }
803 ie += 3 + noa_len;
804 }
805
806 if (find_p2p_ie == true) {
807 if ((p2pinfo->p2p_ps_mode > P2P_PS_NONE) &&
808 (find_p2p_ps_ie == false))
809 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
810 }
811}
812
813static void rtl_p2p_action_ie(struct ieee80211_hw *hw, void *data,
814 unsigned int len)
815{
816 struct rtl_priv *rtlpriv = rtl_priv(hw);
817 struct ieee80211_mgmt *mgmt = data;
818 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
819 u8 noa_num, index , i , noa_index = 0;
820 u8 *pos, *end, *ie;
821 u16 noa_len;
822 static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
823
824 pos = (u8 *)&mgmt->u.action.category;
825 end = data + len;
826 ie = NULL;
827
828 if (pos[0] == 0x7f) {
829 if (memcmp(&pos[1], p2p_oui_ie_type, 4) == 0)
830 ie = pos + 3+4;
831 }
832
833 if (ie == NULL)
834 return;
835
836 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "action frame find P2P IE.\n");
837 /*to find noa ie*/
838 while (ie + 1 < end) {
839 noa_len = READEF2BYTE((__le16 *)&ie[1]);
840 if (ie + 3 + ie[1] > end)
841 return;
842
843 if (ie[0] == 12) {
844 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "find NOA IE.\n");
845 RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, "noa ie ",
846 ie, noa_len);
847 if ((noa_len - 2) % 13 != 0) {
848 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
849 "P2P notice of absence: invalid length.%d\n",
850 noa_len);
851 return;
852 } else {
853 noa_num = (noa_len - 2) / 13;
854 if (noa_num > P2P_MAX_NOA_NUM)
855 noa_num = P2P_MAX_NOA_NUM;
856
857 }
858 noa_index = ie[3];
859 if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
860 P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
861 p2pinfo->noa_index = noa_index;
862 p2pinfo->opp_ps = (ie[4] >> 7);
863 p2pinfo->ctwindow = ie[4] & 0x7F;
864 p2pinfo->noa_num = noa_num;
865 index = 5;
866 for (i = 0; i < noa_num; i++) {
867 p2pinfo->noa_count_type[i] =
868 READEF1BYTE(ie+index);
869 index += 1;
870 p2pinfo->noa_duration[i] =
871 READEF4BYTE((__le32 *)ie+index);
872 index += 4;
873 p2pinfo->noa_interval[i] =
874 READEF4BYTE((__le32 *)ie+index);
875 index += 4;
876 p2pinfo->noa_start_time[i] =
877 READEF4BYTE((__le32 *)ie+index);
878 index += 4;
879 }
880
881 if (p2pinfo->opp_ps == 1) {
882 p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
883 /* Driver should wait LPS entering
884 * CTWindow
885 */
886 if (rtlpriv->psc.fw_current_inpsmode)
887 rtl_p2p_ps_cmd(hw,
888 P2P_PS_ENABLE);
889 } else if (p2pinfo->noa_num > 0) {
890 p2pinfo->p2p_ps_mode = P2P_PS_NOA;
891 rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
892 } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
893 rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
894 }
895 }
896 break;
897 }
898 ie += 3 + noa_len;
899 }
900}
901
902void rtl_p2p_ps_cmd(struct ieee80211_hw *hw , u8 p2p_ps_state)
903{
904 struct rtl_priv *rtlpriv = rtl_priv(hw);
905 struct rtl_ps_ctl *rtlps = rtl_psc(rtl_priv(hw));
906 struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
907
908 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, " p2p state %x\n" , p2p_ps_state);
909 switch (p2p_ps_state) {
910 case P2P_PS_DISABLE:
911 p2pinfo->p2p_ps_state = p2p_ps_state;
912 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
913 &p2p_ps_state);
914 p2pinfo->noa_index = 0;
915 p2pinfo->ctwindow = 0;
916 p2pinfo->opp_ps = 0;
917 p2pinfo->noa_num = 0;
918 p2pinfo->p2p_ps_mode = P2P_PS_NONE;
919 if (rtlps->fw_current_inpsmode) {
920 if (rtlps->smart_ps == 0) {
921 rtlps->smart_ps = 2;
922 rtlpriv->cfg->ops->set_hw_reg(hw,
923 HW_VAR_H2C_FW_PWRMODE,
924 &rtlps->pwr_mode);
925 }
926
927 }
928 break;
929 case P2P_PS_ENABLE:
930 if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
931 p2pinfo->p2p_ps_state = p2p_ps_state;
932
933 if (p2pinfo->ctwindow > 0) {
934 if (rtlps->smart_ps != 0) {
935 rtlps->smart_ps = 0;
936 rtlpriv->cfg->ops->set_hw_reg(hw,
937 HW_VAR_H2C_FW_PWRMODE,
938 &rtlps->pwr_mode);
939 }
940 }
941 rtlpriv->cfg->ops->set_hw_reg(hw,
942 HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
943 &p2p_ps_state);
944
945 }
946 break;
947 case P2P_PS_SCAN:
948 case P2P_PS_SCAN_DONE:
949 case P2P_PS_ALLSTASLEEP:
950 if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
951 p2pinfo->p2p_ps_state = p2p_ps_state;
952 rtlpriv->cfg->ops->set_hw_reg(hw,
953 HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
954 &p2p_ps_state);
955 }
956 break;
957 default:
958 break;
959 }
960 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
961 "ctwindow %x oppps %x\n",
962 p2pinfo->ctwindow , p2pinfo->opp_ps);
963 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
964 "count %x duration %x index %x interval %x start time %x noa num %x\n",
965 p2pinfo->noa_count_type[0],
966 p2pinfo->noa_duration[0],
967 p2pinfo->noa_index,
968 p2pinfo->noa_interval[0],
969 p2pinfo->noa_start_time[0],
970 p2pinfo->noa_num);
971 RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "end\n");
972}
973
974void rtl_p2p_info(struct ieee80211_hw *hw, void *data, unsigned int len)
975{
976 struct rtl_priv *rtlpriv = rtl_priv(hw);
977 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
978 struct ieee80211_hdr *hdr = data;
979
980 if (!mac->p2p)
981 return;
982 if (mac->link_state != MAC80211_LINKED)
983 return;
984 /* min. beacon length + FCS_LEN */
985 if (len <= 40 + FCS_LEN)
986 return;
987
988 /* and only beacons from the associated BSSID, please */
989 if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
990 return;
991
992 /* check if this really is a beacon */
993 if (!(ieee80211_is_beacon(hdr->frame_control) ||
994 ieee80211_is_probe_resp(hdr->frame_control) ||
995 ieee80211_is_action(hdr->frame_control)))
996 return;
997
998 if (ieee80211_is_action(hdr->frame_control))
999 rtl_p2p_action_ie(hw , data , len - FCS_LEN);
1000 else
1001 rtl_p2p_noa_ie(hw , data , len - FCS_LEN);
1002}
1003EXPORT_SYMBOL_GPL(rtl_p2p_info);