drivers/staging/r8188eu/core/rtw_pwrctrl.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
   3
   4 #define _RTW_PWRCTRL_C_
   5
   6 #include "../include/osdep_service.h"
   7 #include "../include/drv_types.h"
   8 #include "../include/osdep_intf.h"
   9 #include "../include/linux/usb.h"
  10
  11 void ips_enter(struct adapter *padapter)
  12 {
  13         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  14         struct xmit_priv *pxmit_priv = &padapter->xmitpriv;
  15
  16         if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
  17             pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
  18                 netdev_dbg(padapter->pnetdev,
  19                            "There are some pkts to transmit\n");
  20                 netdev_dbg(padapter->pnetdev,
  21                            "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
  22                            pxmit_priv->free_xmitbuf_cnt,
  23                            pxmit_priv->free_xmit_extbuf_cnt);
  24                 return;
  25         }
  26
  27         mutex_lock(&pwrpriv->lock);
  28
  29         pwrpriv->bips_processing = true;
  30
  31         /*  syn ips_mode with request */
  32         pwrpriv->ips_mode = pwrpriv->ips_mode_req;
  33
  34         pwrpriv->ips_enter_cnts++;
  35         DBG_88E("==>ips_enter cnts:%d\n", pwrpriv->ips_enter_cnts);
  36         if (rf_off == pwrpriv->change_rfpwrstate) {
  37                 pwrpriv->bpower_saving = true;
  38                 netdev_dbg(padapter->pnetdev, "nolinked power save enter\n");
  39
  40                 if (pwrpriv->ips_mode == IPS_LEVEL_2)
  41                         pwrpriv->bkeepfwalive = true;
  42
  43                 rtw_ips_pwr_down(padapter);
  44                 pwrpriv->rf_pwrstate = rf_off;
  45         }
  46         pwrpriv->bips_processing = false;
  47
  48         mutex_unlock(&pwrpriv->lock);
  49 }
  50
  51 int ips_leave(struct adapter *padapter)
  52 {
  53         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  54         struct security_priv *psecuritypriv = &padapter->securitypriv;
  55         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
  56         int result = _SUCCESS;
  57         int keyid;
  58
  59         mutex_lock(&pwrpriv->lock);
  60
  61         if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
  62                 pwrpriv->bips_processing = true;
  63                 pwrpriv->change_rfpwrstate = rf_on;
  64                 pwrpriv->ips_leave_cnts++;
  65                 DBG_88E("==>ips_leave cnts:%d\n", pwrpriv->ips_leave_cnts);
  66
  67                 result = rtw_ips_pwr_up(padapter);
  68                 if (result == _SUCCESS) {
  69                         pwrpriv->rf_pwrstate = rf_on;
  70                 }
  71                 netdev_dbg(padapter->pnetdev, "nolinked power save leave\n");
  72
  73                 if ((_WEP40_ == psecuritypriv->dot11PrivacyAlgrthm) || (_WEP104_ == psecuritypriv->dot11PrivacyAlgrthm)) {
  74                         DBG_88E("==>%s, channel(%d), processing(%x)\n", __func__, padapter->mlmeextpriv.cur_channel, pwrpriv->bips_processing);
  75                         set_channel_bwmode(padapter, padapter->mlmeextpriv.cur_channel, HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
  76                         for (keyid = 0; keyid < 4; keyid++) {
  77                                 if (pmlmepriv->key_mask & BIT(keyid)) {
  78                                         if (keyid == psecuritypriv->dot11PrivacyKeyIndex)
  79                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 1);
  80                                         else
  81                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 0);
  82                                 }
  83                         }
  84                 }
  85
  86                 DBG_88E("==> ips_leave.....LED(0x%08x)...\n", rtw_read32(padapter, 0x4c));
  87                 pwrpriv->bips_processing = false;
  88
  89                 pwrpriv->bkeepfwalive = false;
  90                 pwrpriv->bpower_saving = false;
  91         }
  92
  93         mutex_unlock(&pwrpriv->lock);
  94
  95         return result;
  96 }
  97
  98 static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
  99 {
 100         struct adapter *buddy = adapter->pbuddy_adapter;
 101         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 102         struct wifidirect_info  *pwdinfo = &adapter->wdinfo;
 103         bool ret = false;
 104
 105         if (adapter->pwrctrlpriv.ips_deny_time >= jiffies)
 106                 goto exit;
 107
 108         if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE | WIFI_SITE_MONITOR) ||
 109             check_fwstate(pmlmepriv, WIFI_UNDER_LINKING | WIFI_UNDER_WPS) ||
 110             check_fwstate(pmlmepriv, WIFI_UNDER_WPS) ||
 111             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 112             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE | WIFI_ADHOC_STATE) ||
 113             !rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE))
 114                 goto exit;
 115
 116         /* consider buddy, if exist */
 117         if (buddy) {
 118                 struct mlme_priv *b_pmlmepriv = &buddy->mlmepriv;
 119                 struct wifidirect_info *b_pwdinfo = &buddy->wdinfo;
 120
 121                 if (check_fwstate(b_pmlmepriv, WIFI_ASOC_STATE | WIFI_SITE_MONITOR) ||
 122                     check_fwstate(b_pmlmepriv, WIFI_UNDER_LINKING | WIFI_UNDER_WPS) ||
 123                     check_fwstate(b_pmlmepriv, WIFI_AP_STATE) ||
 124                     check_fwstate(b_pmlmepriv, WIFI_ADHOC_MASTER_STATE | WIFI_ADHOC_STATE) ||
 125                     !rtw_p2p_chk_state(b_pwdinfo, P2P_STATE_NONE))
 126                         goto exit;
 127         }
 128         ret = true;
 129
 130 exit:
 131         return ret;
 132 }
 133
 134 void rtw_ps_processor(struct adapter *padapter)
 135 {
 136         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 137         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 138
 139         pwrpriv->ps_processing = true;
 140
 141         if (pwrpriv->bips_processing)
 142                 goto exit;
 143
 144         if (pwrpriv->ips_mode_req == IPS_NONE)
 145                 goto exit;
 146
 147         if (!rtw_pwr_unassociated_idle(padapter))
 148                 goto exit;
 149
 150         if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts % 4) == 0)) {
 151                 DBG_88E("==>%s .fw_state(%x)\n", __func__, get_fwstate(pmlmepriv));
 152                 pwrpriv->change_rfpwrstate = rf_off;
 153
 154                 ips_enter(padapter);
 155         }
 156 exit:
 157         rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
 158         pwrpriv->ps_processing = false;
 159 }
 160
 161 static void pwr_state_check_handler(struct timer_list *t)
 162 {
 163         struct adapter *padapter =
 164                 from_timer(padapter, t,
 165                            pwrctrlpriv.pwr_state_check_timer);
 166         rtw_ps_cmd(padapter);
 167 }
 168
 169 static u8 PS_RDY_CHECK(struct adapter *padapter)
 170 {
 171         u32 curr_time, delta_time;
 172         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 173         struct mlme_priv        *pmlmepriv = &padapter->mlmepriv;
 174
 175         curr_time = jiffies;
 176         delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
 177
 178         if (delta_time < LPS_DELAY_TIME)
 179                 return false;
 180
 181         if (!check_fwstate(pmlmepriv, _FW_LINKED) ||
 182             check_fwstate(pmlmepriv, _FW_UNDER_SURVEY) ||
 183             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 184             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) ||
 185             check_fwstate(pmlmepriv, WIFI_ADHOC_STATE))
 186                 return false;
 187         if (pwrpriv->bInSuspend)
 188                 return false;
 189         if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X && !padapter->securitypriv.binstallGrpkey) {
 190                 DBG_88E("Group handshake still in progress !!!\n");
 191                 return false;
 192         }
 193         return true;
 194 }
 195
 196 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode)
 197 {
 198         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 199         struct wifidirect_info  *pwdinfo = &padapter->wdinfo;
 200
 201         if (ps_mode > PM_Card_Disable)
 202                 return;
 203
 204         if (pwrpriv->pwr_mode == ps_mode) {
 205                 if (PS_MODE_ACTIVE == ps_mode)
 206                         return;
 207
 208                 if ((pwrpriv->smart_ps == smart_ps) &&
 209                     (pwrpriv->bcn_ant_mode == bcn_ant_mode))
 210                         return;
 211         }
 212
 213         /* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
 214         if (ps_mode == PS_MODE_ACTIVE) {
 215                 if (pwdinfo->opp_ps == 0) {
 216                         DBG_88E("rtw_set_ps_mode: Leave 802.11 power save\n");
 217                         pwrpriv->pwr_mode = ps_mode;
 218                         SetHwReg8188EU(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 219                         pwrpriv->bFwCurrentInPSMode = false;
 220                 }
 221         } else {
 222                 if (PS_RDY_CHECK(padapter)) {
 223                         DBG_88E("%s: Enter 802.11 power save\n", __func__);
 224                         pwrpriv->bFwCurrentInPSMode = true;
 225                         pwrpriv->pwr_mode = ps_mode;
 226                         pwrpriv->smart_ps = smart_ps;
 227                         pwrpriv->bcn_ant_mode = bcn_ant_mode;
 228                         SetHwReg8188EU(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 229
 230                         /*  Set CTWindow after LPS */
 231                         if (pwdinfo->opp_ps == 1)
 232                                 p2p_ps_wk_cmd(padapter, P2P_PS_ENABLE, 0);
 233                 }
 234         }
 235
 236 }
 237
 238 /*
 239  * Return:
 240  *      0:      Leave OK
 241  *      -1:     Timeout
 242  *      -2:     Other error
 243  */
 244 s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
 245 {
 246         u32 start_time;
 247         u8 bAwake = false;
 248         s32 err = 0;
 249
 250         start_time = jiffies;
 251         while (1) {
 252                 GetHwReg8188EU(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
 253                 if (bAwake)
 254                         break;
 255
 256                 if (padapter->bSurpriseRemoved) {
 257                         err = -2;
 258                         DBG_88E("%s: device surprise removed!!\n", __func__);
 259                         break;
 260                 }
 261
 262                 if (rtw_get_passing_time_ms(start_time) > delay_ms) {
 263                         err = -1;
 264                         DBG_88E("%s: Wait for FW LPS leave more than %u ms!!!\n", __func__, delay_ms);
 265                         break;
 266                 }
 267                 rtw_usleep_os(100);
 268         }
 269
 270         return err;
 271 }
 272
 273 /*  */
 274 /*      Description: */
 275 /*              Enter the leisure power save mode. */
 276 /*  */
 277 void LPS_Enter(struct adapter *padapter)
 278 {
 279         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 280
 281         if (!PS_RDY_CHECK(padapter))
 282                 return;
 283
 284         if (pwrpriv->bLeisurePs) {
 285                 /*  Idle for a while if we connect to AP a while ago. */
 286                 if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
 287                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
 288                                 pwrpriv->bpower_saving = true;
 289                                 DBG_88E("%s smart_ps:%d\n", __func__, pwrpriv->smart_ps);
 290                                 /* For Tenda W311R IOT issue */
 291                                 rtw_set_ps_mode(padapter, pwrpriv->power_mgnt,
 292                                                 pwrpriv->smart_ps, 0x40);
 293                         }
 294                 } else {
 295                         pwrpriv->LpsIdleCount++;
 296                 }
 297         }
 298
 299 }
 300
 301 #define LPS_LEAVE_TIMEOUT_MS 100
 302
 303 /*      Description: */
 304 /*              Leave the leisure power save mode. */
 305 void LPS_Leave(struct adapter *padapter)
 306 {
 307         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 308
 309         if (pwrpriv->bLeisurePs) {
 310                 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
 311                         rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0x40);
 312
 313                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
 314                                 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
 315                 }
 316         }
 317
 318         pwrpriv->bpower_saving = false;
 319
 320 }
 321
 322 /*  */
 323 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
 324 /*  Move code to function by tynli. 2010.03.26. */
 325 /*  */
 326 void LeaveAllPowerSaveMode(struct adapter *Adapter)
 327 {
 328         struct mlme_priv        *pmlmepriv = &Adapter->mlmepriv;
 329         u8      enqueue = 0;
 330
 331         if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
 332                 p2p_ps_wk_cmd(Adapter, P2P_PS_DISABLE, enqueue);
 333
 334                 rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
 335         }
 336
 337 }
 338
 339 void rtw_init_pwrctrl_priv(struct adapter *padapter)
 340 {
 341         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 342
 343         mutex_init(&pwrctrlpriv->lock);
 344         pwrctrlpriv->rf_pwrstate = rf_on;
 345         pwrctrlpriv->ips_enter_cnts = 0;
 346         pwrctrlpriv->ips_leave_cnts = 0;
 347         pwrctrlpriv->bips_processing = false;
 348
 349         pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
 350         pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
 351
 352         pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
 353         pwrctrlpriv->pwr_state_check_cnts = 0;
 354         pwrctrlpriv->bInSuspend = false;
 355         pwrctrlpriv->bkeepfwalive = false;
 356
 357         pwrctrlpriv->LpsIdleCount = 0;
 358         pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
 359         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 360
 361         pwrctrlpriv->bFwCurrentInPSMode = false;
 362
 363         pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
 364         pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
 365         pwrctrlpriv->bcn_ant_mode = 0;
 366
 367         timer_setup(&pwrctrlpriv->pwr_state_check_timer, pwr_state_check_handler, 0);
 368 }
 369
 370 /*
 371 * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
 372 * @adapter: pointer to struct adapter structure
 373 * @ips_deffer_ms: the ms wiil prevent from falling into IPS after wakeup
 374 * Return _SUCCESS or _FAIL
 375 */
 376
 377 int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
 378 {
 379         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 380         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 381         int ret = _SUCCESS;
 382         u32 start = jiffies;
 383
 384         if (pwrpriv->ips_deny_time < jiffies + rtw_ms_to_systime(ips_deffer_ms))
 385                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 386
 387         if (pwrpriv->ps_processing) {
 388                 DBG_88E("%s wait ps_processing...\n", __func__);
 389                 while (pwrpriv->ps_processing && rtw_get_passing_time_ms(start) <= 3000)
 390                         msleep(10);
 391                 if (pwrpriv->ps_processing)
 392                         DBG_88E("%s wait ps_processing timeout\n", __func__);
 393                 else
 394                         DBG_88E("%s wait ps_processing done\n", __func__);
 395         }
 396
 397         /* System suspend is not allowed to wakeup */
 398         if (pwrpriv->bInSuspend) {
 399                 while (pwrpriv->bInSuspend &&
 400                        (rtw_get_passing_time_ms(start) <= 3000 ||
 401                        (rtw_get_passing_time_ms(start) <= 500)))
 402                                 msleep(10);
 403                 if (pwrpriv->bInSuspend)
 404                         DBG_88E("%s wait bInSuspend timeout\n", __func__);
 405                 else
 406                         DBG_88E("%s wait bInSuspend done\n", __func__);
 407         }
 408
 409         /* I think this should be check in IPS, LPS, autosuspend functions... */
 410         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
 411                 ret = _SUCCESS;
 412                 goto exit;
 413         }
 414         if (rf_off == pwrpriv->rf_pwrstate) {
 415                 DBG_88E("%s call ips_leave....\n", __func__);
 416                 if (_FAIL ==  ips_leave(padapter)) {
 417                         DBG_88E("======> ips_leave fail.............\n");
 418                         ret = _FAIL;
 419                         goto exit;
 420                 }
 421         }
 422
 423         /* TODO: the following checking need to be merged... */
 424         if (padapter->bDriverStopped || !padapter->bup ||
 425             !padapter->hw_init_completed) {
 426                 DBG_88E("%s: bDriverStopped=%d, bup=%d, hw_init_completed =%u\n"
 427                         , caller
 428                         , padapter->bDriverStopped
 429                         , padapter->bup
 430                         , padapter->hw_init_completed);
 431                 ret = false;
 432                 goto exit;
 433         }
 434
 435 exit:
 436         if (pwrpriv->ips_deny_time < jiffies + rtw_ms_to_systime(ips_deffer_ms))
 437                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 438         return ret;
 439 }
 440
 441 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
 442 {
 443         int     ret = 0;
 444         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 445
 446         if (mode < PS_MODE_NUM) {
 447                 if (pwrctrlpriv->power_mgnt != mode) {
 448                         if (PS_MODE_ACTIVE == mode)
 449                                 LeaveAllPowerSaveMode(padapter);
 450                         else
 451                                 pwrctrlpriv->LpsIdleCount = 2;
 452                         pwrctrlpriv->power_mgnt = mode;
 453                         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 454                 }
 455         } else {
 456                 ret = -EINVAL;
 457         }
 458
 459         return ret;
 460 }
 461
 462 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
 463 {
 464         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 465
 466         if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
 467                 rtw_ips_mode_req(pwrctrlpriv, mode);
 468                 DBG_88E("%s %s\n", __func__, mode == IPS_NORMAL ? "IPS_NORMAL" : "IPS_LEVEL_2");
 469                 return 0;
 470         } else if (mode == IPS_NONE) {
 471                 rtw_ips_mode_req(pwrctrlpriv, mode);
 472                 DBG_88E("%s %s\n", __func__, "IPS_NONE");
 473                 if ((padapter->bSurpriseRemoved == 0) && (_FAIL == rtw_pwr_wakeup(padapter)))
 474                         return -EFAULT;
 475         } else {
 476                 return -EINVAL;
 477         }
 478         return 0;
 479 }