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0c817338 LF |
1 | /****************************************************************************** |
2 | * | |
a8d76066 | 3 | * Copyright(c) 2009-2012 Realtek Corporation. |
0c817338 LF |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
22 | * wlanfae <wlanfae@realtek.com> | |
23 | * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, | |
24 | * Hsinchu 300, Taiwan. | |
25 | * | |
26 | * Larry Finger <Larry.Finger@lwfinger.net> | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
ee40fa06 | 30 | #include <linux/export.h> |
0c817338 LF |
31 | #include "wifi.h" |
32 | #include "base.h" | |
33 | #include "ps.h" | |
34 | ||
35 | bool rtl_ps_enable_nic(struct ieee80211_hw *hw) | |
36 | { | |
37 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
38 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
39 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
0c817338 LF |
40 | |
41 | /*<1> reset trx ring */ | |
42 | if (rtlhal->interface == INTF_PCI) | |
43 | rtlpriv->intf_ops->reset_trx_ring(hw); | |
44 | ||
45 | if (is_hal_stop(rtlhal)) | |
46 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
f30d7507 | 47 | "Driver is already down!\n"); |
0c817338 LF |
48 | |
49 | /*<2> Enable Adapter */ | |
b0302aba LF |
50 | if (rtlpriv->cfg->ops->hw_init(hw)) |
51 | return 1; | |
0c817338 | 52 | RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); |
0c817338 LF |
53 | |
54 | /*<3> Enable Interrupt */ | |
55 | rtlpriv->cfg->ops->enable_interrupt(hw); | |
56 | ||
57 | /*<enable timer> */ | |
58 | rtl_watch_dog_timer_callback((unsigned long)hw); | |
59 | ||
cc7dc0c4 | 60 | return true; |
0c817338 LF |
61 | } |
62 | EXPORT_SYMBOL(rtl_ps_enable_nic); | |
63 | ||
64 | bool rtl_ps_disable_nic(struct ieee80211_hw *hw) | |
65 | { | |
0c817338 LF |
66 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
67 | ||
68 | /*<1> Stop all timer */ | |
69 | rtl_deinit_deferred_work(hw); | |
70 | ||
71 | /*<2> Disable Interrupt */ | |
72 | rtlpriv->cfg->ops->disable_interrupt(hw); | |
67fc6052 | 73 | tasklet_kill(&rtlpriv->works.irq_tasklet); |
0c817338 LF |
74 | |
75 | /*<3> Disable Adapter */ | |
76 | rtlpriv->cfg->ops->hw_disable(hw); | |
77 | ||
32473284 | 78 | return true; |
0c817338 LF |
79 | } |
80 | EXPORT_SYMBOL(rtl_ps_disable_nic); | |
81 | ||
82 | bool rtl_ps_set_rf_state(struct ieee80211_hw *hw, | |
83 | enum rf_pwrstate state_toset, | |
4b9d8d67 | 84 | u32 changesource) |
0c817338 LF |
85 | { |
86 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
87 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
7ea47240 | 88 | bool actionallowed = false; |
0c817338 | 89 | |
0c817338 LF |
90 | switch (state_toset) { |
91 | case ERFON: | |
92 | ppsc->rfoff_reason &= (~changesource); | |
93 | ||
94 | if ((changesource == RF_CHANGE_BY_HW) && | |
e10542c4 | 95 | (ppsc->hwradiooff)) { |
7ea47240 | 96 | ppsc->hwradiooff = false; |
0c817338 LF |
97 | } |
98 | ||
99 | if (!ppsc->rfoff_reason) { | |
100 | ppsc->rfoff_reason = 0; | |
7ea47240 | 101 | actionallowed = true; |
0c817338 LF |
102 | } |
103 | ||
104 | break; | |
105 | ||
106 | case ERFOFF: | |
107 | ||
23677ce3 | 108 | if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) { |
7ea47240 | 109 | ppsc->hwradiooff = true; |
0c817338 LF |
110 | } |
111 | ||
112 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 113 | actionallowed = true; |
0c817338 LF |
114 | break; |
115 | ||
116 | case ERFSLEEP: | |
117 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 118 | actionallowed = true; |
0c817338 LF |
119 | break; |
120 | ||
121 | default: | |
122 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, | |
f30d7507 | 123 | "switch case not processed\n"); |
0c817338 LF |
124 | break; |
125 | } | |
126 | ||
7ea47240 | 127 | if (actionallowed) |
0c817338 LF |
128 | rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset); |
129 | ||
7ea47240 | 130 | return actionallowed; |
0c817338 LF |
131 | } |
132 | EXPORT_SYMBOL(rtl_ps_set_rf_state); | |
133 | ||
134 | static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw) | |
135 | { | |
136 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
137 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
138 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
139 | ||
7ea47240 | 140 | ppsc->swrf_processing = true; |
0c817338 | 141 | |
099fb8ab | 142 | if (ppsc->inactive_pwrstate == ERFON && |
cc7dc0c4 | 143 | rtlhal->interface == INTF_PCI) { |
0c817338 | 144 | if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) && |
cc7dc0c4 | 145 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
146 | rtlhal->interface == INTF_PCI) { |
147 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 148 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
149 | } |
150 | } | |
151 | ||
4b9d8d67 | 152 | rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate, RF_CHANGE_BY_IPS); |
0c817338 LF |
153 | |
154 | if (ppsc->inactive_pwrstate == ERFOFF && | |
155 | rtlhal->interface == INTF_PCI) { | |
cc7dc0c4 C |
156 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && |
157 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
0c817338 | 158 | rtlpriv->intf_ops->enable_aspm(hw); |
cc7dc0c4 | 159 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
160 | } |
161 | } | |
162 | ||
7ea47240 | 163 | ppsc->swrf_processing = false; |
0c817338 LF |
164 | } |
165 | ||
166 | void rtl_ips_nic_off_wq_callback(void *data) | |
167 | { | |
168 | struct rtl_works *rtlworks = | |
169 | container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq); | |
170 | struct ieee80211_hw *hw = rtlworks->hw; | |
171 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
172 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
173 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
174 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
175 | enum rf_pwrstate rtstate; | |
176 | ||
177 | if (mac->opmode != NL80211_IFTYPE_STATION) { | |
178 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
f30d7507 | 179 | "not station return\n"); |
0c817338 LF |
180 | return; |
181 | } | |
182 | ||
cc7dc0c4 C |
183 | if (mac->link_state > MAC80211_NOLINK) |
184 | return; | |
185 | ||
0c817338 LF |
186 | if (is_hal_stop(rtlhal)) |
187 | return; | |
188 | ||
189 | if (rtlpriv->sec.being_setkey) | |
190 | return; | |
191 | ||
7ea47240 | 192 | if (ppsc->inactiveps) { |
0c817338 LF |
193 | rtstate = ppsc->rfpwr_state; |
194 | ||
195 | /* | |
196 | *Do not enter IPS in the following conditions: | |
197 | *(1) RF is already OFF or Sleep | |
7ea47240 | 198 | *(2) swrf_processing (indicates the IPS is still under going) |
0c817338 LF |
199 | *(3) Connectted (only disconnected can trigger IPS) |
200 | *(4) IBSS (send Beacon) | |
201 | *(5) AP mode (send Beacon) | |
202 | *(6) monitor mode (rcv packet) | |
203 | */ | |
204 | ||
205 | if (rtstate == ERFON && | |
7ea47240 | 206 | !ppsc->swrf_processing && |
0c817338 LF |
207 | (mac->link_state == MAC80211_NOLINK) && |
208 | !mac->act_scanning) { | |
209 | RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, | |
f30d7507 | 210 | "IPSEnter(): Turn off RF\n"); |
0c817338 LF |
211 | |
212 | ppsc->inactive_pwrstate = ERFOFF; | |
7ea47240 | 213 | ppsc->in_powersavemode = true; |
0c817338 LF |
214 | |
215 | /*rtl_pci_reset_trx_ring(hw); */ | |
216 | _rtl_ps_inactive_ps(hw); | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | void rtl_ips_nic_off(struct ieee80211_hw *hw) | |
222 | { | |
223 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
224 | ||
225 | /* | |
226 | *because when link with ap, mac80211 will ask us | |
227 | *to disable nic quickly after scan before linking, | |
228 | *this will cause link failed, so we delay 100ms here | |
229 | */ | |
230 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
231 | &rtlpriv->works.ips_nic_off_wq, MSECS(100)); | |
232 | } | |
233 | ||
234 | void rtl_ips_nic_on(struct ieee80211_hw *hw) | |
235 | { | |
236 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
cc7dc0c4 | 237 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
0c817338 LF |
238 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); |
239 | enum rf_pwrstate rtstate; | |
b9116b9a | 240 | unsigned long flags; |
0c817338 | 241 | |
cc7dc0c4 C |
242 | if (mac->opmode != NL80211_IFTYPE_STATION) |
243 | return; | |
244 | ||
b9116b9a | 245 | spin_lock_irqsave(&rtlpriv->locks.ips_lock, flags); |
0c817338 | 246 | |
7ea47240 | 247 | if (ppsc->inactiveps) { |
0c817338 LF |
248 | rtstate = ppsc->rfpwr_state; |
249 | ||
250 | if (rtstate != ERFON && | |
7ea47240 | 251 | !ppsc->swrf_processing && |
0c817338 LF |
252 | ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) { |
253 | ||
254 | ppsc->inactive_pwrstate = ERFON; | |
7ea47240 | 255 | ppsc->in_powersavemode = false; |
0c817338 LF |
256 | |
257 | _rtl_ps_inactive_ps(hw); | |
258 | } | |
259 | } | |
260 | ||
b9116b9a | 261 | spin_unlock_irqrestore(&rtlpriv->locks.ips_lock, flags); |
0c817338 LF |
262 | } |
263 | ||
264 | /*for FW LPS*/ | |
265 | ||
266 | /* | |
267 | *Determine if we can set Fw into PS mode | |
268 | *in current condition.Return TRUE if it | |
269 | *can enter PS mode. | |
270 | */ | |
271 | static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw) | |
272 | { | |
273 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
274 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
275 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
276 | u32 ps_timediff; | |
277 | ||
278 | ps_timediff = jiffies_to_msecs(jiffies - | |
279 | ppsc->last_delaylps_stamp_jiffies); | |
280 | ||
281 | if (ps_timediff < 2000) { | |
282 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 283 | "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n"); |
0c817338 LF |
284 | return false; |
285 | } | |
286 | ||
287 | if (mac->link_state != MAC80211_LINKED) | |
288 | return false; | |
289 | ||
290 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
291 | return false; | |
292 | ||
293 | return true; | |
294 | } | |
295 | ||
296 | /* Change current and default preamble mode.*/ | |
297 | static void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode) | |
298 | { | |
299 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
300 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
301 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
302 | u8 rpwm_val, fw_pwrmode; | |
303 | ||
304 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
305 | return; | |
306 | ||
307 | if (mac->link_state != MAC80211_LINKED) | |
308 | return; | |
309 | ||
310 | if (ppsc->dot11_psmode == rt_psmode) | |
311 | return; | |
312 | ||
313 | /* Update power save mode configured. */ | |
314 | ppsc->dot11_psmode = rt_psmode; | |
315 | ||
316 | /* | |
317 | *<FW control LPS> | |
318 | *1. Enter PS mode | |
319 | * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode | |
320 | * cmd to set Fw into PS mode. | |
321 | *2. Leave PS mode | |
322 | * Send H2C fw_pwrmode cmd to Fw to set Fw into Active | |
323 | * mode and set RPWM to turn RF on. | |
324 | */ | |
325 | ||
cc7dc0c4 | 326 | if ((ppsc->fwctrl_lps) && ppsc->report_linked) { |
7ea47240 | 327 | bool fw_current_inps; |
0c817338 LF |
328 | if (ppsc->dot11_psmode == EACTIVE) { |
329 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
330 | "FW LPS leave ps_mode:%x\n", |
331 | FW_PS_ACTIVE_MODE); | |
0c817338 LF |
332 | |
333 | rpwm_val = 0x0C; /* RF on */ | |
334 | fw_pwrmode = FW_PS_ACTIVE_MODE; | |
335 | rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SET_RPWM, | |
336 | (u8 *) (&rpwm_val)); | |
337 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
338 | HW_VAR_H2C_FW_PWRMODE, | |
339 | (u8 *) (&fw_pwrmode)); | |
7ea47240 | 340 | fw_current_inps = false; |
0c817338 LF |
341 | |
342 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
343 | HW_VAR_FW_PSMODE_STATUS, | |
7ea47240 | 344 | (u8 *) (&fw_current_inps)); |
0c817338 LF |
345 | |
346 | } else { | |
347 | if (rtl_get_fwlps_doze(hw)) { | |
348 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
349 | "FW LPS enter ps_mode:%x\n", |
350 | ppsc->fwctrl_psmode); | |
0c817338 LF |
351 | |
352 | rpwm_val = 0x02; /* RF off */ | |
7ea47240 | 353 | fw_current_inps = true; |
0c817338 LF |
354 | rtlpriv->cfg->ops->set_hw_reg(hw, |
355 | HW_VAR_FW_PSMODE_STATUS, | |
7ea47240 | 356 | (u8 *) (&fw_current_inps)); |
0c817338 LF |
357 | rtlpriv->cfg->ops->set_hw_reg(hw, |
358 | HW_VAR_H2C_FW_PWRMODE, | |
359 | (u8 *) (&ppsc->fwctrl_psmode)); | |
360 | ||
361 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
362 | HW_VAR_SET_RPWM, | |
363 | (u8 *) (&rpwm_val)); | |
364 | } else { | |
365 | /* Reset the power save related parameters. */ | |
366 | ppsc->dot11_psmode = EACTIVE; | |
367 | } | |
368 | } | |
369 | } | |
370 | } | |
371 | ||
372 | /*Enter the leisure power save mode.*/ | |
373 | void rtl_lps_enter(struct ieee80211_hw *hw) | |
374 | { | |
375 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
376 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
377 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
0c817338 | 378 | |
cc7dc0c4 | 379 | if (!ppsc->fwctrl_lps) |
0c817338 LF |
380 | return; |
381 | ||
382 | if (rtlpriv->sec.being_setkey) | |
383 | return; | |
384 | ||
7ea47240 | 385 | if (rtlpriv->link_info.busytraffic) |
0c817338 LF |
386 | return; |
387 | ||
388 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
389 | if (mac->cnt_after_linked < 5) | |
390 | return; | |
391 | ||
392 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
393 | return; | |
394 | ||
395 | if (mac->link_state != MAC80211_LINKED) | |
396 | return; | |
397 | ||
6539306b | 398 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 399 | |
cc7dc0c4 C |
400 | /* Idle for a while if we connect to AP a while ago. */ |
401 | if (mac->cnt_after_linked >= 2) { | |
402 | if (ppsc->dot11_psmode == EACTIVE) { | |
403 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 404 | "Enter 802.11 power save mode...\n"); |
0c817338 | 405 | |
cc7dc0c4 | 406 | rtl_lps_set_psmode(hw, EAUTOPS); |
0c817338 LF |
407 | } |
408 | } | |
cc7dc0c4 | 409 | |
6539306b | 410 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 LF |
411 | } |
412 | ||
413 | /*Leave the leisure power save mode.*/ | |
414 | void rtl_lps_leave(struct ieee80211_hw *hw) | |
415 | { | |
416 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
417 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
418 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
0c817338 | 419 | |
6539306b | 420 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 421 | |
cc7dc0c4 | 422 | if (ppsc->fwctrl_lps) { |
0c817338 LF |
423 | if (ppsc->dot11_psmode != EACTIVE) { |
424 | ||
425 | /*FIX ME */ | |
426 | rtlpriv->cfg->ops->enable_interrupt(hw); | |
427 | ||
428 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
cc7dc0c4 | 429 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
430 | rtlhal->interface == INTF_PCI) { |
431 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 432 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
433 | } |
434 | ||
435 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 436 | "Busy Traffic,Leave 802.11 power save..\n"); |
0c817338 LF |
437 | |
438 | rtl_lps_set_psmode(hw, EACTIVE); | |
439 | } | |
440 | } | |
6539306b | 441 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 | 442 | } |
cc7dc0c4 C |
443 | |
444 | /* For sw LPS*/ | |
445 | void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len) | |
446 | { | |
447 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
448 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
449 | struct ieee80211_hdr *hdr = (void *) data; | |
450 | struct ieee80211_tim_ie *tim_ie; | |
451 | u8 *tim; | |
452 | u8 tim_len; | |
453 | bool u_buffed; | |
454 | bool m_buffed; | |
455 | ||
456 | if (mac->opmode != NL80211_IFTYPE_STATION) | |
457 | return; | |
458 | ||
459 | if (!rtlpriv->psc.swctrl_lps) | |
460 | return; | |
461 | ||
462 | if (rtlpriv->mac80211.link_state != MAC80211_LINKED) | |
463 | return; | |
464 | ||
465 | if (!rtlpriv->psc.sw_ps_enabled) | |
466 | return; | |
467 | ||
468 | if (rtlpriv->psc.fwctrl_lps) | |
469 | return; | |
470 | ||
471 | if (likely(!(hw->conf.flags & IEEE80211_CONF_PS))) | |
472 | return; | |
473 | ||
474 | /* check if this really is a beacon */ | |
475 | if (!ieee80211_is_beacon(hdr->frame_control)) | |
476 | return; | |
477 | ||
478 | /* min. beacon length + FCS_LEN */ | |
479 | if (len <= 40 + FCS_LEN) | |
480 | return; | |
481 | ||
482 | /* and only beacons from the associated BSSID, please */ | |
483 | if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid)) | |
484 | return; | |
485 | ||
486 | rtlpriv->psc.last_beacon = jiffies; | |
487 | ||
488 | tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM); | |
489 | if (!tim) | |
490 | return; | |
491 | ||
492 | if (tim[1] < sizeof(*tim_ie)) | |
493 | return; | |
494 | ||
495 | tim_len = tim[1]; | |
496 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; | |
497 | ||
498 | if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period)) | |
499 | rtlpriv->psc.dtim_counter = tim_ie->dtim_count; | |
500 | ||
501 | /* Check whenever the PHY can be turned off again. */ | |
502 | ||
503 | /* 1. What about buffered unicast traffic for our AID? */ | |
504 | u_buffed = ieee80211_check_tim(tim_ie, tim_len, | |
505 | rtlpriv->mac80211.assoc_id); | |
506 | ||
507 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ | |
508 | m_buffed = tim_ie->bitmap_ctrl & 0x01; | |
509 | rtlpriv->psc.multi_buffered = m_buffed; | |
510 | ||
511 | /* unicast will process by mac80211 through | |
512 | * set ~IEEE80211_CONF_PS, So we just check | |
513 | * multicast frames here */ | |
514 | if (!m_buffed) { | |
515 | /* back to low-power land. and delay is | |
516 | * prevent null power save frame tx fail */ | |
517 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
518 | &rtlpriv->works.ps_work, MSECS(5)); | |
519 | } else { | |
f30d7507 JP |
520 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, |
521 | "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed); | |
cc7dc0c4 C |
522 | } |
523 | } | |
524 | ||
525 | void rtl_swlps_rf_awake(struct ieee80211_hw *hw) | |
526 | { | |
527 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
528 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
529 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
cc7dc0c4 C |
530 | |
531 | if (!rtlpriv->psc.swctrl_lps) | |
532 | return; | |
533 | if (mac->link_state != MAC80211_LINKED) | |
534 | return; | |
535 | ||
536 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
537 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
538 | rtlpriv->intf_ops->disable_aspm(hw); | |
539 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
540 | } | |
541 | ||
6539306b | 542 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 543 | rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); |
6539306b | 544 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
545 | } |
546 | ||
547 | void rtl_swlps_rfon_wq_callback(void *data) | |
548 | { | |
549 | struct rtl_works *rtlworks = | |
550 | container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq); | |
551 | struct ieee80211_hw *hw = rtlworks->hw; | |
552 | ||
553 | rtl_swlps_rf_awake(hw); | |
554 | } | |
555 | ||
556 | void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) | |
557 | { | |
558 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
559 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
560 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
cc7dc0c4 C |
561 | u8 sleep_intv; |
562 | ||
563 | if (!rtlpriv->psc.sw_ps_enabled) | |
564 | return; | |
565 | ||
566 | if ((rtlpriv->sec.being_setkey) || | |
567 | (mac->opmode == NL80211_IFTYPE_ADHOC)) | |
568 | return; | |
569 | ||
570 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
571 | if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5)) | |
572 | return; | |
573 | ||
574 | if (rtlpriv->link_info.busytraffic) | |
575 | return; | |
576 | ||
6539306b | 577 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 578 | rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); |
6539306b | 579 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
580 | |
581 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && | |
582 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
583 | rtlpriv->intf_ops->enable_aspm(hw); | |
584 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
585 | } | |
586 | ||
587 | /* here is power save alg, when this beacon is DTIM | |
588 | * we will set sleep time to dtim_period * n; | |
589 | * when this beacon is not DTIM, we will set sleep | |
590 | * time to sleep_intv = rtlpriv->psc.dtim_counter or | |
591 | * MAX_SW_LPS_SLEEP_INTV(default set to 5) */ | |
592 | ||
593 | if (rtlpriv->psc.dtim_counter == 0) { | |
594 | if (hw->conf.ps_dtim_period == 1) | |
595 | sleep_intv = hw->conf.ps_dtim_period * 2; | |
596 | else | |
597 | sleep_intv = hw->conf.ps_dtim_period; | |
598 | } else { | |
599 | sleep_intv = rtlpriv->psc.dtim_counter; | |
600 | } | |
601 | ||
602 | if (sleep_intv > MAX_SW_LPS_SLEEP_INTV) | |
603 | sleep_intv = MAX_SW_LPS_SLEEP_INTV; | |
604 | ||
605 | /* this print should always be dtim_conter = 0 & | |
606 | * sleep = dtim_period, that meaons, we should | |
607 | * awake before every dtim */ | |
608 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, | |
f30d7507 JP |
609 | "dtim_counter:%x will sleep :%d beacon_intv\n", |
610 | rtlpriv->psc.dtim_counter, sleep_intv); | |
cc7dc0c4 C |
611 | |
612 | /* we tested that 40ms is enough for sw & hw sw delay */ | |
613 | queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq, | |
614 | MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40)); | |
615 | } | |
616 | ||
617 | ||
618 | void rtl_swlps_wq_callback(void *data) | |
619 | { | |
620 | struct rtl_works *rtlworks = container_of_dwork_rtl(data, | |
621 | struct rtl_works, | |
622 | ps_work); | |
623 | struct ieee80211_hw *hw = rtlworks->hw; | |
624 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
625 | bool ps = false; | |
626 | ||
627 | ps = (hw->conf.flags & IEEE80211_CONF_PS); | |
628 | ||
629 | /* we can sleep after ps null send ok */ | |
630 | if (rtlpriv->psc.state_inap) { | |
631 | rtl_swlps_rf_sleep(hw); | |
632 | ||
633 | if (rtlpriv->psc.state && !ps) { | |
634 | rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies - | |
635 | rtlpriv->psc.last_action); | |
636 | } | |
637 | ||
638 | if (ps) | |
639 | rtlpriv->psc.last_slept = jiffies; | |
640 | ||
641 | rtlpriv->psc.last_action = jiffies; | |
642 | rtlpriv->psc.state = ps; | |
643 | } | |
644 | } |