1// SPDX-License-Identifier: GPL-2.0
2/******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7#include <drv_types.h>
8#include <rtw_debug.h>
9#include <hal_data.h>
10#include <linux/jiffies.h>
11
12
13void _ips_enter(struct adapter *padapter)
14{
15 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
16
17 pwrpriv->bips_processing = true;
18
19 /* syn ips_mode with request */
20 pwrpriv->ips_mode = pwrpriv->ips_mode_req;
21
22 pwrpriv->ips_enter_cnts++;
23
24 if (rf_off == pwrpriv->change_rfpwrstate) {
25 pwrpriv->bpower_saving = true;
26
27 if (pwrpriv->ips_mode == IPS_LEVEL_2)
28 pwrpriv->bkeepfwalive = true;
29
30 rtw_ips_pwr_down(padapter);
31 pwrpriv->rf_pwrstate = rf_off;
32 }
33 pwrpriv->bips_processing = false;
34
35}
36
37void ips_enter(struct adapter *padapter)
38{
39 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
40
41
42 hal_btcoex_IpsNotify(padapter, type: pwrpriv->ips_mode_req);
43
44 mutex_lock(&pwrpriv->lock);
45 _ips_enter(padapter);
46 mutex_unlock(lock: &pwrpriv->lock);
47}
48
49int _ips_leave(struct adapter *padapter)
50{
51 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
52 int result = _SUCCESS;
53
54 if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
55 pwrpriv->bips_processing = true;
56 pwrpriv->change_rfpwrstate = rf_on;
57 pwrpriv->ips_leave_cnts++;
58
59 result = rtw_ips_pwr_up(padapter);
60 if (result == _SUCCESS) {
61 pwrpriv->rf_pwrstate = rf_on;
62 }
63 pwrpriv->bips_processing = false;
64
65 pwrpriv->bkeepfwalive = false;
66 pwrpriv->bpower_saving = false;
67 }
68
69 return result;
70}
71
72int ips_leave(struct adapter *padapter)
73{
74 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
75 int ret;
76
77 if (!is_primary_adapter(padapter))
78 return _SUCCESS;
79
80 mutex_lock(&pwrpriv->lock);
81 ret = _ips_leave(padapter);
82 mutex_unlock(lock: &pwrpriv->lock);
83
84 if (ret == _SUCCESS)
85 hal_btcoex_IpsNotify(padapter, type: IPS_NONE);
86
87 return ret;
88}
89
90static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
91{
92 struct adapter *buddy = adapter->pbuddy_adapter;
93 struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
94 struct xmit_priv *pxmit_priv = &adapter->xmitpriv;
95
96 bool ret = false;
97
98 if (adapter_to_pwrctl(adapter)->bpower_saving)
99 goto exit;
100
101 if (time_before(jiffies, adapter_to_pwrctl(adapter)->ips_deny_time))
102 goto exit;
103
104 if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
105 || check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
106 || check_fwstate(pmlmepriv, WIFI_AP_STATE)
107 || check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
108 )
109 goto exit;
110
111 /* consider buddy, if exist */
112 if (buddy) {
113 struct mlme_priv *b_pmlmepriv = &(buddy->mlmepriv);
114
115 if (check_fwstate(pmlmepriv: b_pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
116 || check_fwstate(pmlmepriv: b_pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
117 || check_fwstate(pmlmepriv: b_pmlmepriv, WIFI_AP_STATE)
118 || check_fwstate(pmlmepriv: b_pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
119 )
120 goto exit;
121 }
122
123 if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
124 pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
125 netdev_dbg(adapter->pnetdev,
126 "There are some pkts to transmit\n");
127 netdev_dbg(adapter->pnetdev,
128 "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
129 pxmit_priv->free_xmitbuf_cnt,
130 pxmit_priv->free_xmit_extbuf_cnt);
131 goto exit;
132 }
133
134 ret = true;
135
136exit:
137 return ret;
138}
139
140
141/*
142 * ATTENTION:
143 *rtw_ps_processor() doesn't handle LPS.
144 */
145void rtw_ps_processor(struct adapter *padapter)
146{
147 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
148 struct dvobj_priv *psdpriv = padapter->dvobj;
149 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
150 u32 ps_deny = 0;
151
152 mutex_lock(&adapter_to_pwrctl(padapter)->lock);
153 ps_deny = rtw_ps_deny_get(padapter);
154 mutex_unlock(lock: &adapter_to_pwrctl(padapter)->lock);
155 if (ps_deny != 0)
156 goto exit;
157
158 if (pwrpriv->bInSuspend) {/* system suspend or autosuspend */
159 pdbgpriv->dbg_ps_insuspend_cnt++;
160 return;
161 }
162
163 pwrpriv->ps_processing = true;
164
165 if (pwrpriv->ips_mode_req == IPS_NONE)
166 goto exit;
167
168 if (!rtw_pwr_unassociated_idle(adapter: padapter))
169 goto exit;
170
171 if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts%4) == 0)) {
172 pwrpriv->change_rfpwrstate = rf_off;
173 {
174 ips_enter(padapter);
175 }
176 }
177exit:
178 pwrpriv->ps_processing = false;
179}
180
181static void pwr_state_check_handler(struct timer_list *t)
182{
183 struct pwrctrl_priv *pwrctrlpriv =
184 from_timer(pwrctrlpriv, t, pwr_state_check_timer);
185 struct adapter *padapter = pwrctrlpriv->adapter;
186
187 rtw_ps_cmd(padapter);
188}
189
190void traffic_check_for_leave_lps(struct adapter *padapter, u8 tx, u32 tx_packets)
191{
192 static unsigned long start_time;
193 static u32 xmit_cnt;
194 u8 bLeaveLPS = false;
195 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
196
197
198
199 if (tx) { /* from tx */
200 xmit_cnt += tx_packets;
201
202 if (start_time == 0)
203 start_time = jiffies;
204
205 if (jiffies_to_msecs(j: jiffies - start_time) > 2000) { /* 2 sec == watch dog timer */
206 if (xmit_cnt > 8) {
207 if (adapter_to_pwrctl(padapter)->bLeisurePs
208 && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
209 && !(hal_btcoex_IsBtControlLps(padapter))) {
210 bLeaveLPS = true;
211 }
212 }
213
214 start_time = jiffies;
215 xmit_cnt = 0;
216 }
217
218 } else { /* from rx path */
219 if (pmlmepriv->LinkDetectInfo.NumRxUnicastOkInPeriod > 4/*2*/) {
220 if (adapter_to_pwrctl(padapter)->bLeisurePs
221 && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
222 && !(hal_btcoex_IsBtControlLps(padapter)))
223 bLeaveLPS = true;
224 }
225 }
226
227 if (bLeaveLPS)
228 /* rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_LEAVE, 1); */
229 rtw_lps_ctrl_wk_cmd(padapter, lps_ctrl_type: LPS_CTRL_LEAVE, enqueue: tx?0:1);
230}
231
232/*
233 * Description:
234 *This function MUST be called under power lock protect
235 *
236 * Parameters
237 *padapter
238 *pslv power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
239 *
240 */
241void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
242{
243 u8 rpwm;
244 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
245 u8 cpwm_orig;
246
247 pslv = PS_STATE(pslv);
248
249 if (!pwrpriv->brpwmtimeout) {
250 if (pwrpriv->rpwm == pslv ||
251 (pwrpriv->rpwm >= PS_STATE_S2 && pslv >= PS_STATE_S2))
252 return;
253
254 }
255
256 if ((padapter->bSurpriseRemoved) || !(padapter->hw_init_completed)) {
257 pwrpriv->cpwm = PS_STATE_S4;
258
259 return;
260 }
261
262 if (padapter->bDriverStopped) {
263 if (pslv < PS_STATE_S2)
264 return;
265 }
266
267 rpwm = pslv | pwrpriv->tog;
268 /* only when from PS_STATE S0/S1 to S2 and higher needs ACK */
269 if ((pwrpriv->cpwm < PS_STATE_S2) && (pslv >= PS_STATE_S2))
270 rpwm |= PS_ACK;
271
272 pwrpriv->rpwm = pslv;
273
274 cpwm_orig = 0;
275 if (rpwm & PS_ACK)
276 rtw_hal_get_hwreg(padapter, variable: HW_VAR_CPWM, val: &cpwm_orig);
277
278 if (rpwm & PS_ACK)
279 _set_timer(ptimer: &pwrpriv->pwr_rpwm_timer, LPS_RPWM_WAIT_MS);
280 rtw_hal_set_hwreg(padapter, variable: HW_VAR_SET_RPWM, val: (u8 *)(&rpwm));
281
282 pwrpriv->tog += 0x80;
283
284 /* No LPS 32K, No Ack */
285 if (rpwm & PS_ACK) {
286 unsigned long start_time;
287 u8 cpwm_now;
288 u8 poll_cnt = 0;
289
290 start_time = jiffies;
291
292 /* polling cpwm */
293 do {
294 mdelay(1);
295 poll_cnt++;
296 rtw_hal_get_hwreg(padapter, variable: HW_VAR_CPWM, val: &cpwm_now);
297 if ((cpwm_orig ^ cpwm_now) & 0x80) {
298 pwrpriv->cpwm = PS_STATE_S4;
299 pwrpriv->cpwm_tog = cpwm_now & PS_TOGGLE;
300 break;
301 }
302
303 if (jiffies_to_msecs(j: jiffies - start_time) > LPS_RPWM_WAIT_MS) {
304 _set_timer(ptimer: &pwrpriv->pwr_rpwm_timer, delay_time: 1);
305 break;
306 }
307 } while (1);
308 } else
309 pwrpriv->cpwm = pslv;
310}
311
312static u8 PS_RDY_CHECK(struct adapter *padapter)
313{
314 unsigned long curr_time, delta_time;
315 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
316 struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
317
318 if (pwrpriv->bInSuspend)
319 return false;
320
321 curr_time = jiffies;
322
323 delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
324
325 if (delta_time < LPS_DELAY_TIME)
326 return false;
327
328 if (check_fwstate(pmlmepriv, WIFI_SITE_MONITOR)
329 || check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
330 || check_fwstate(pmlmepriv, WIFI_AP_STATE)
331 || check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
332 || rtw_is_scan_deny(adapter: padapter)
333 )
334 return false;
335
336 if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X &&
337 !padapter->securitypriv.binstallGrpkey)
338 return false;
339
340 if (!rtw_cfg80211_pwr_mgmt(adapter: padapter))
341 return false;
342
343 return true;
344}
345
346void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode, const char *msg)
347{
348 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
349
350 if (ps_mode > PM_Card_Disable)
351 return;
352
353 if (pwrpriv->pwr_mode == ps_mode)
354 if (ps_mode == PS_MODE_ACTIVE)
355 return;
356
357
358 mutex_lock(&pwrpriv->lock);
359
360 /* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
361 if (ps_mode == PS_MODE_ACTIVE) {
362 if (!(hal_btcoex_IsBtControlLps(padapter))
363 || (hal_btcoex_IsBtControlLps(padapter)
364 && !(hal_btcoex_IsLpsOn(padapter)))) {
365 pwrpriv->pwr_mode = ps_mode;
366 rtw_set_rpwm(padapter, PS_STATE_S4);
367
368 rtw_hal_set_hwreg(padapter, variable: HW_VAR_H2C_FW_PWRMODE, val: (u8 *)(&ps_mode));
369 pwrpriv->fw_current_in_ps_mode = false;
370
371 hal_btcoex_LpsNotify(padapter, type: ps_mode);
372 }
373 } else {
374 if ((PS_RDY_CHECK(padapter) && check_fwstate(pmlmepriv: &padapter->mlmepriv, WIFI_ASOC_STATE)) ||
375 ((hal_btcoex_IsBtControlLps(padapter)) && (hal_btcoex_IsLpsOn(padapter)))
376 ) {
377 u8 pslv;
378
379 hal_btcoex_LpsNotify(padapter, type: ps_mode);
380
381 pwrpriv->fw_current_in_ps_mode = true;
382 pwrpriv->pwr_mode = ps_mode;
383 pwrpriv->smart_ps = smart_ps;
384 pwrpriv->bcn_ant_mode = bcn_ant_mode;
385 rtw_hal_set_hwreg(padapter, variable: HW_VAR_H2C_FW_PWRMODE, val: (u8 *)(&ps_mode));
386
387 pslv = PS_STATE_S2;
388 if (pwrpriv->alives == 0)
389 pslv = PS_STATE_S0;
390
391 if (!(hal_btcoex_IsBtDisabled(padapter)) &&
392 (hal_btcoex_IsBtControlLps(padapter))) {
393 u8 val8;
394
395 val8 = hal_btcoex_LpsVal(padapter);
396 if (val8 & BIT(4))
397 pslv = PS_STATE_S2;
398 }
399
400 rtw_set_rpwm(padapter, pslv);
401 }
402 }
403
404 mutex_unlock(lock: &pwrpriv->lock);
405}
406
407/*
408 * Return:
409 *0: Leave OK
410 *-1: Timeout
411 *-2: Other error
412 */
413s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
414{
415 unsigned long start_time;
416 u8 bAwake = false;
417 s32 err = 0;
418
419
420 start_time = jiffies;
421 while (1) {
422 rtw_hal_get_hwreg(padapter, variable: HW_VAR_FWLPS_RF_ON, val: &bAwake);
423 if (bAwake)
424 break;
425
426 if (padapter->bSurpriseRemoved) {
427 err = -2;
428 break;
429 }
430
431 if (jiffies_to_msecs(j: jiffies - start_time) > delay_ms) {
432 err = -1;
433 break;
434 }
435 msleep(msecs: 1);
436 }
437
438 return err;
439}
440
441/* */
442/* Description: */
443/* Enter the leisure power save mode. */
444/* */
445void LPS_Enter(struct adapter *padapter, const char *msg)
446{
447 struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
448 struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
449 int n_assoc_iface = 0;
450 char buf[32] = {0};
451
452 if (hal_btcoex_IsBtControlLps(padapter))
453 return;
454
455 /* Skip lps enter request if number of assocated adapters is not 1 */
456 if (check_fwstate(pmlmepriv: &(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
457 n_assoc_iface++;
458 if (n_assoc_iface != 1)
459 return;
460
461 /* Skip lps enter request for adapter not port0 */
462 if (get_iface_type(padapter) != IFACE_PORT0)
463 return;
464
465 if (!PS_RDY_CHECK(padapter: dvobj->padapters))
466 return;
467
468 if (pwrpriv->bLeisurePs) {
469 /* Idle for a while if we connect to AP a while ago. */
470 if (pwrpriv->LpsIdleCount >= 2) { /* 4 Sec */
471 if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
472 scnprintf(buf, size: sizeof(buf), fmt: "WIFI-%s", msg);
473 pwrpriv->bpower_saving = true;
474 rtw_set_ps_mode(padapter, ps_mode: pwrpriv->power_mgnt, smart_ps: padapter->registrypriv.smart_ps, bcn_ant_mode: 0, msg: buf);
475 }
476 } else
477 pwrpriv->LpsIdleCount++;
478 }
479}
480
481/* */
482/* Description: */
483/* Leave the leisure power save mode. */
484/* */
485void LPS_Leave(struct adapter *padapter, const char *msg)
486{
487#define LPS_LEAVE_TIMEOUT_MS 100
488
489 struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
490 struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
491 char buf[32] = {0};
492
493 if (hal_btcoex_IsBtControlLps(padapter))
494 return;
495
496 if (pwrpriv->bLeisurePs) {
497 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
498 scnprintf(buf, size: sizeof(buf), fmt: "WIFI-%s", msg);
499 rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, smart_ps: 0, bcn_ant_mode: 0, msg: buf);
500
501 if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
502 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
503 }
504 }
505
506 pwrpriv->bpower_saving = false;
507}
508
509void LeaveAllPowerSaveModeDirect(struct adapter *Adapter)
510{
511 struct adapter *pri_padapter = GET_PRIMARY_ADAPTER(Adapter);
512 struct mlme_priv *pmlmepriv = &(Adapter->mlmepriv);
513 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(Adapter);
514
515 if (Adapter->bSurpriseRemoved)
516 return;
517
518 if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
519
520 if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
521 return;
522
523 mutex_lock(&pwrpriv->lock);
524
525 rtw_set_rpwm(padapter: Adapter, PS_STATE_S4);
526
527 mutex_unlock(lock: &pwrpriv->lock);
528
529 rtw_lps_ctrl_wk_cmd(padapter: pri_padapter, lps_ctrl_type: LPS_CTRL_LEAVE, enqueue: 0);
530 } else {
531 if (pwrpriv->rf_pwrstate == rf_off)
532 ips_leave(padapter: pri_padapter);
533 }
534}
535
536/* */
537/* Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
538/* Move code to function by tynli. 2010.03.26. */
539/* */
540void LeaveAllPowerSaveMode(struct adapter *Adapter)
541{
542 struct dvobj_priv *dvobj = adapter_to_dvobj(Adapter);
543 u8 enqueue = 0;
544 int n_assoc_iface = 0;
545
546 if (!Adapter->bup)
547 return;
548
549 if (Adapter->bSurpriseRemoved)
550 return;
551
552 if (check_fwstate(pmlmepriv: &(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
553 n_assoc_iface++;
554
555 if (n_assoc_iface) { /* connect */
556 enqueue = 1;
557
558 rtw_lps_ctrl_wk_cmd(padapter: Adapter, lps_ctrl_type: LPS_CTRL_LEAVE, enqueue);
559
560 LPS_Leave_check(padapter: Adapter);
561 } else {
562 if (adapter_to_pwrctl(Adapter)->rf_pwrstate == rf_off) {
563 ips_leave(padapter: Adapter);
564 }
565 }
566}
567
568void LPS_Leave_check(struct adapter *padapter)
569{
570 struct pwrctrl_priv *pwrpriv;
571 unsigned long start_time;
572 u8 bReady;
573
574 pwrpriv = adapter_to_pwrctl(padapter);
575
576 bReady = false;
577 start_time = jiffies;
578
579 cond_resched();
580
581 while (1) {
582 mutex_lock(&pwrpriv->lock);
583
584 if (padapter->bSurpriseRemoved ||
585 !(padapter->hw_init_completed) ||
586 (pwrpriv->pwr_mode == PS_MODE_ACTIVE))
587 bReady = true;
588
589 mutex_unlock(lock: &pwrpriv->lock);
590
591 if (bReady)
592 break;
593
594 if (jiffies_to_msecs(j: jiffies - start_time) > 100)
595 break;
596
597 msleep(msecs: 1);
598 }
599}
600
601/*
602 * Caller:ISR handler...
603 *
604 * This will be called when CPWM interrupt is up.
605 *
606 * using to update cpwn of drv; and drv willl make a decision to up or down pwr level
607 */
608void cpwm_int_hdl(struct adapter *padapter, struct reportpwrstate_parm *preportpwrstate)
609{
610 struct pwrctrl_priv *pwrpriv;
611
612 pwrpriv = adapter_to_pwrctl(padapter);
613
614 mutex_lock(&pwrpriv->lock);
615
616 if (pwrpriv->rpwm < PS_STATE_S2)
617 goto exit;
618
619 pwrpriv->cpwm = PS_STATE(preportpwrstate->state);
620 pwrpriv->cpwm_tog = preportpwrstate->state & PS_TOGGLE;
621
622 if (pwrpriv->cpwm >= PS_STATE_S2) {
623 if (pwrpriv->alives & CMD_ALIVE)
624 complete(&padapter->cmdpriv.cmd_queue_comp);
625
626 if (pwrpriv->alives & XMIT_ALIVE)
627 complete(&padapter->xmitpriv.xmit_comp);
628 }
629
630exit:
631 mutex_unlock(lock: &pwrpriv->lock);
632
633}
634
635static void cpwm_event_callback(struct work_struct *work)
636{
637 struct pwrctrl_priv *pwrpriv = container_of(work, struct pwrctrl_priv, cpwm_event);
638 struct dvobj_priv *dvobj = pwrctl_to_dvobj(pwrctl_priv: pwrpriv);
639 struct adapter *adapter = dvobj->if1;
640 struct reportpwrstate_parm report;
641
642 report.state = PS_STATE_S2;
643 cpwm_int_hdl(padapter: adapter, preportpwrstate: &report);
644}
645
646static void rpwmtimeout_workitem_callback(struct work_struct *work)
647{
648 struct adapter *padapter;
649 struct dvobj_priv *dvobj;
650 struct pwrctrl_priv *pwrpriv;
651
652
653 pwrpriv = container_of(work, struct pwrctrl_priv, rpwmtimeoutwi);
654 dvobj = pwrctl_to_dvobj(pwrctl_priv: pwrpriv);
655 padapter = dvobj->if1;
656
657 mutex_lock(&pwrpriv->lock);
658 if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
659 goto exit;
660
661 mutex_unlock(lock: &pwrpriv->lock);
662
663 if (rtw_read8(adapter: padapter, addr: 0x100) != 0xEA) {
664 struct reportpwrstate_parm report;
665
666 report.state = PS_STATE_S2;
667 cpwm_int_hdl(padapter, preportpwrstate: &report);
668
669 return;
670 }
671
672 mutex_lock(&pwrpriv->lock);
673
674 if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
675 goto exit;
676
677 pwrpriv->brpwmtimeout = true;
678 rtw_set_rpwm(padapter, pslv: pwrpriv->rpwm);
679 pwrpriv->brpwmtimeout = false;
680
681exit:
682 mutex_unlock(lock: &pwrpriv->lock);
683}
684
685/*
686 * This function is a timer handler, can't do any IO in it.
687 */
688static void pwr_rpwm_timeout_handler(struct timer_list *t)
689{
690 struct pwrctrl_priv *pwrpriv = from_timer(pwrpriv, t, pwr_rpwm_timer);
691
692 if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
693 return;
694
695 _set_workitem(pwork: &pwrpriv->rpwmtimeoutwi);
696}
697
698static inline void register_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
699{
700 pwrctrl->alives |= tag;
701}
702
703static inline void unregister_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
704{
705 pwrctrl->alives &= ~tag;
706}
707
708
709/*
710 * Description:
711 *Check if the fw_pwrstate is okay for I/O.
712 *If not (cpwm is less than S2), then the sub-routine
713 *will raise the cpwm to be greater than or equal to S2.
714 *
715 *Calling Context: Passive
716 *
717 *Constraint:
718 * 1. this function will request pwrctrl->lock
719 *
720 * Return Value:
721 *_SUCCESS hardware is ready for I/O
722 *_FAIL can't I/O right now
723 */
724s32 rtw_register_task_alive(struct adapter *padapter, u32 task)
725{
726 s32 res;
727 struct pwrctrl_priv *pwrctrl;
728 u8 pslv;
729
730 res = _SUCCESS;
731 pwrctrl = adapter_to_pwrctl(padapter);
732 pslv = PS_STATE_S2;
733
734 mutex_lock(&pwrctrl->lock);
735
736 register_task_alive(pwrctrl, tag: task);
737
738 if (pwrctrl->fw_current_in_ps_mode) {
739 if (pwrctrl->cpwm < pslv) {
740 if (pwrctrl->cpwm < PS_STATE_S2)
741 res = _FAIL;
742 if (pwrctrl->rpwm < pslv)
743 rtw_set_rpwm(padapter, pslv);
744 }
745 }
746
747 mutex_unlock(lock: &pwrctrl->lock);
748
749 if (res == _FAIL)
750 if (pwrctrl->cpwm >= PS_STATE_S2)
751 res = _SUCCESS;
752
753 return res;
754}
755
756/*
757 * Description:
758 *If task is done, call this func. to power down firmware again.
759 *
760 *Constraint:
761 * 1. this function will request pwrctrl->lock
762 *
763 * Return Value:
764 *none
765 */
766void rtw_unregister_task_alive(struct adapter *padapter, u32 task)
767{
768 struct pwrctrl_priv *pwrctrl;
769 u8 pslv;
770
771 pwrctrl = adapter_to_pwrctl(padapter);
772 pslv = PS_STATE_S0;
773
774 if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
775 u8 val8;
776
777 val8 = hal_btcoex_LpsVal(padapter);
778 if (val8 & BIT(4))
779 pslv = PS_STATE_S2;
780 }
781
782 mutex_lock(&pwrctrl->lock);
783
784 unregister_task_alive(pwrctrl, tag: task);
785
786 if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
787 if (pwrctrl->cpwm > pslv)
788 if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
789 rtw_set_rpwm(padapter, pslv);
790
791 }
792
793 mutex_unlock(lock: &pwrctrl->lock);
794}
795
796/*
797 * Caller: rtw_xmit_thread
798 *
799 * Check if the fw_pwrstate is okay for xmit.
800 * If not (cpwm is less than S3), then the sub-routine
801 * will raise the cpwm to be greater than or equal to S3.
802 *
803 * Calling Context: Passive
804 *
805 * Return Value:
806 * _SUCCESS rtw_xmit_thread can write fifo/txcmd afterwards.
807 * _FAIL rtw_xmit_thread can not do anything.
808 */
809s32 rtw_register_tx_alive(struct adapter *padapter)
810{
811 s32 res;
812 struct pwrctrl_priv *pwrctrl;
813 u8 pslv;
814
815 res = _SUCCESS;
816 pwrctrl = adapter_to_pwrctl(padapter);
817 pslv = PS_STATE_S2;
818
819 mutex_lock(&pwrctrl->lock);
820
821 register_task_alive(pwrctrl, XMIT_ALIVE);
822
823 if (pwrctrl->fw_current_in_ps_mode) {
824 if (pwrctrl->cpwm < pslv) {
825 if (pwrctrl->cpwm < PS_STATE_S2)
826 res = _FAIL;
827 if (pwrctrl->rpwm < pslv)
828 rtw_set_rpwm(padapter, pslv);
829 }
830 }
831
832 mutex_unlock(lock: &pwrctrl->lock);
833
834 if (res == _FAIL)
835 if (pwrctrl->cpwm >= PS_STATE_S2)
836 res = _SUCCESS;
837
838 return res;
839}
840
841/*
842 * Caller: rtw_cmd_thread
843 *
844 * Check if the fw_pwrstate is okay for issuing cmd.
845 * If not (cpwm should be is less than S2), then the sub-routine
846 * will raise the cpwm to be greater than or equal to S2.
847 *
848 * Calling Context: Passive
849 *
850 * Return Value:
851 *_SUCCESS rtw_cmd_thread can issue cmds to firmware afterwards.
852 *_FAIL rtw_cmd_thread can not do anything.
853 */
854s32 rtw_register_cmd_alive(struct adapter *padapter)
855{
856 s32 res;
857 struct pwrctrl_priv *pwrctrl;
858 u8 pslv;
859
860 res = _SUCCESS;
861 pwrctrl = adapter_to_pwrctl(padapter);
862 pslv = PS_STATE_S2;
863
864 mutex_lock(&pwrctrl->lock);
865
866 register_task_alive(pwrctrl, CMD_ALIVE);
867
868 if (pwrctrl->fw_current_in_ps_mode) {
869 if (pwrctrl->cpwm < pslv) {
870 if (pwrctrl->cpwm < PS_STATE_S2)
871 res = _FAIL;
872 if (pwrctrl->rpwm < pslv)
873 rtw_set_rpwm(padapter, pslv);
874 }
875 }
876
877 mutex_unlock(lock: &pwrctrl->lock);
878
879 if (res == _FAIL)
880 if (pwrctrl->cpwm >= PS_STATE_S2)
881 res = _SUCCESS;
882
883 return res;
884}
885
886/*
887 * Caller: ISR
888 *
889 * If ISR's txdone,
890 * No more pkts for TX,
891 * Then driver shall call this fun. to power down firmware again.
892 */
893void rtw_unregister_tx_alive(struct adapter *padapter)
894{
895 struct pwrctrl_priv *pwrctrl;
896 u8 pslv;
897
898 pwrctrl = adapter_to_pwrctl(padapter);
899 pslv = PS_STATE_S0;
900
901 if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
902 u8 val8;
903
904 val8 = hal_btcoex_LpsVal(padapter);
905 if (val8 & BIT(4))
906 pslv = PS_STATE_S2;
907 }
908
909 mutex_lock(&pwrctrl->lock);
910
911 unregister_task_alive(pwrctrl, XMIT_ALIVE);
912
913 if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
914 if (pwrctrl->cpwm > pslv)
915 if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
916 rtw_set_rpwm(padapter, pslv);
917 }
918
919 mutex_unlock(lock: &pwrctrl->lock);
920}
921
922/*
923 * Caller: ISR
924 *
925 * If all commands have been done,
926 * and no more command to do,
927 * then driver shall call this fun. to power down firmware again.
928 */
929void rtw_unregister_cmd_alive(struct adapter *padapter)
930{
931 struct pwrctrl_priv *pwrctrl;
932 u8 pslv;
933
934 pwrctrl = adapter_to_pwrctl(padapter);
935 pslv = PS_STATE_S0;
936
937 if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
938 u8 val8;
939
940 val8 = hal_btcoex_LpsVal(padapter);
941 if (val8 & BIT(4))
942 pslv = PS_STATE_S2;
943 }
944
945 mutex_lock(&pwrctrl->lock);
946
947 unregister_task_alive(pwrctrl, CMD_ALIVE);
948
949 if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
950 if (pwrctrl->cpwm > pslv) {
951 if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
952 rtw_set_rpwm(padapter, pslv);
953 }
954 }
955
956 mutex_unlock(lock: &pwrctrl->lock);
957}
958
959void rtw_init_pwrctrl_priv(struct adapter *padapter)
960{
961 struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
962
963 mutex_init(&pwrctrlpriv->lock);
964 pwrctrlpriv->rf_pwrstate = rf_on;
965 pwrctrlpriv->ips_enter_cnts = 0;
966 pwrctrlpriv->ips_leave_cnts = 0;
967 pwrctrlpriv->bips_processing = false;
968
969 pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
970 pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
971
972 pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
973 pwrctrlpriv->pwr_state_check_cnts = 0;
974 pwrctrlpriv->bInternalAutoSuspend = false;
975 pwrctrlpriv->bInSuspend = false;
976 pwrctrlpriv->bkeepfwalive = false;
977
978 pwrctrlpriv->LpsIdleCount = 0;
979 pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/* PS_MODE_MIN; */
980 pwrctrlpriv->bLeisurePs = pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
981
982 pwrctrlpriv->fw_current_in_ps_mode = false;
983
984 pwrctrlpriv->rpwm = 0;
985 pwrctrlpriv->cpwm = PS_STATE_S4;
986
987 pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
988 pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
989 pwrctrlpriv->bcn_ant_mode = 0;
990 pwrctrlpriv->dtim = 0;
991
992 pwrctrlpriv->tog = 0x80;
993
994 rtw_hal_set_hwreg(padapter, variable: HW_VAR_SET_RPWM, val: (u8 *)(&pwrctrlpriv->rpwm));
995
996 _init_workitem(pwork: &pwrctrlpriv->cpwm_event, pfunc: cpwm_event_callback, NULL);
997
998 pwrctrlpriv->brpwmtimeout = false;
999 pwrctrlpriv->adapter = padapter;
1000 _init_workitem(pwork: &pwrctrlpriv->rpwmtimeoutwi, pfunc: rpwmtimeout_workitem_callback, NULL);
1001 timer_setup(&pwrctrlpriv->pwr_rpwm_timer, pwr_rpwm_timeout_handler, 0);
1002 timer_setup(&pwrctrlpriv->pwr_state_check_timer,
1003 pwr_state_check_handler, 0);
1004
1005 pwrctrlpriv->wowlan_mode = false;
1006 pwrctrlpriv->wowlan_ap_mode = false;
1007}
1008
1009
1010void rtw_free_pwrctrl_priv(struct adapter *adapter)
1011{
1012}
1013
1014inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
1015{
1016 struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
1017 pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(m: ms);
1018}
1019
1020/*
1021* rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
1022* @adapter: pointer to struct adapter structure
1023* @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
1024* Return _SUCCESS or _FAIL
1025*/
1026
1027int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
1028{
1029 struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
1030 struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
1031 struct mlme_priv *pmlmepriv;
1032 int ret = _SUCCESS;
1033 unsigned long start = jiffies;
1034 unsigned long deny_time = jiffies + msecs_to_jiffies(m: ips_deffer_ms);
1035
1036 /* for LPS */
1037 LeaveAllPowerSaveMode(Adapter: padapter);
1038
1039 /* IPS still bound with primary adapter */
1040 padapter = GET_PRIMARY_ADAPTER(padapter);
1041 pmlmepriv = &padapter->mlmepriv;
1042
1043 if (time_before(pwrpriv->ips_deny_time, deny_time))
1044 pwrpriv->ips_deny_time = deny_time;
1045
1046
1047 if (pwrpriv->ps_processing)
1048 while (pwrpriv->ps_processing && jiffies_to_msecs(j: jiffies - start) <= 3000)
1049 mdelay(10);
1050
1051 if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend)
1052 while (pwrpriv->bInSuspend && jiffies_to_msecs(j: jiffies - start) <= 3000
1053 )
1054 mdelay(10);
1055
1056 /* System suspend is not allowed to wakeup */
1057 if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend) {
1058 ret = _FAIL;
1059 goto exit;
1060 }
1061
1062 /* block??? */
1063 if (pwrpriv->bInternalAutoSuspend && padapter->net_closed) {
1064 ret = _FAIL;
1065 goto exit;
1066 }
1067
1068 /* I think this should be check in IPS, LPS, autosuspend functions... */
1069 if (check_fwstate(pmlmepriv, _FW_LINKED)) {
1070 ret = _SUCCESS;
1071 goto exit;
1072 }
1073
1074 if (rf_off == pwrpriv->rf_pwrstate) {
1075 {
1076 if (ips_leave(padapter) == _FAIL) {
1077 ret = _FAIL;
1078 goto exit;
1079 }
1080 }
1081 }
1082
1083 /* TODO: the following checking need to be merged... */
1084 if (padapter->bDriverStopped || !padapter->bup || !padapter->hw_init_completed) {
1085 ret = false;
1086 goto exit;
1087 }
1088
1089exit:
1090 deny_time = jiffies + msecs_to_jiffies(m: ips_deffer_ms);
1091 if (time_before(pwrpriv->ips_deny_time, deny_time))
1092 pwrpriv->ips_deny_time = deny_time;
1093 return ret;
1094
1095}
1096
1097int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
1098{
1099 int ret = 0;
1100 struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
1101
1102 if (mode < PS_MODE_NUM) {
1103 if (pwrctrlpriv->power_mgnt != mode) {
1104 if (mode == PS_MODE_ACTIVE)
1105 LeaveAllPowerSaveMode(Adapter: padapter);
1106 else
1107 pwrctrlpriv->LpsIdleCount = 2;
1108
1109 pwrctrlpriv->power_mgnt = mode;
1110 pwrctrlpriv->bLeisurePs =
1111 pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
1112 }
1113 } else
1114 ret = -EINVAL;
1115
1116 return ret;
1117}
1118
1119int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
1120{
1121 struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
1122
1123 if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
1124 rtw_ips_mode_req(pwrctrlpriv, mode);
1125 return 0;
1126 } else if (mode == IPS_NONE) {
1127 rtw_ips_mode_req(pwrctrlpriv, mode);
1128 if ((padapter->bSurpriseRemoved == 0) && (rtw_pwr_wakeup(padapter) == _FAIL))
1129 return -EFAULT;
1130 } else
1131 return -EINVAL;
1132
1133 return 0;
1134}
1135
1136/*
1137 * ATTENTION:
1138 *This function will request pwrctrl LOCK!
1139 */
1140void rtw_ps_deny(struct adapter *padapter, enum ps_deny_reason reason)
1141{
1142 struct pwrctrl_priv *pwrpriv;
1143
1144 pwrpriv = adapter_to_pwrctl(padapter);
1145
1146 mutex_lock(&pwrpriv->lock);
1147 pwrpriv->ps_deny |= BIT(reason);
1148 mutex_unlock(lock: &pwrpriv->lock);
1149}
1150
1151/*
1152 * ATTENTION:
1153 *This function will request pwrctrl LOCK!
1154 */
1155void rtw_ps_deny_cancel(struct adapter *padapter, enum ps_deny_reason reason)
1156{
1157 struct pwrctrl_priv *pwrpriv;
1158
1159 pwrpriv = adapter_to_pwrctl(padapter);
1160
1161 mutex_lock(&pwrpriv->lock);
1162 pwrpriv->ps_deny &= ~BIT(reason);
1163 mutex_unlock(lock: &pwrpriv->lock);
1164}
1165
1166/*
1167 * ATTENTION:
1168 *Before calling this function pwrctrl lock should be occupied already,
1169 *otherwise it may return incorrect value.
1170 */
1171u32 rtw_ps_deny_get(struct adapter *padapter)
1172{
1173 return adapter_to_pwrctl(padapter)->ps_deny;
1174}
1175

source code of linux/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c