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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 | ||
108 | if ((changesource == RF_CHANGE_BY_HW) | |
7ea47240 LF |
109 | && (ppsc->hwradiooff == false)) { |
110 | ppsc->hwradiooff = true; | |
0c817338 LF |
111 | } |
112 | ||
113 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 114 | actionallowed = true; |
0c817338 LF |
115 | break; |
116 | ||
117 | case ERFSLEEP: | |
118 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 119 | actionallowed = true; |
0c817338 LF |
120 | break; |
121 | ||
122 | default: | |
123 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, | |
f30d7507 | 124 | "switch case not processed\n"); |
0c817338 LF |
125 | break; |
126 | } | |
127 | ||
7ea47240 | 128 | if (actionallowed) |
0c817338 LF |
129 | rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset); |
130 | ||
7ea47240 | 131 | return actionallowed; |
0c817338 LF |
132 | } |
133 | EXPORT_SYMBOL(rtl_ps_set_rf_state); | |
134 | ||
135 | static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw) | |
136 | { | |
137 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
138 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
139 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
140 | ||
7ea47240 | 141 | ppsc->swrf_processing = true; |
0c817338 | 142 | |
099fb8ab | 143 | if (ppsc->inactive_pwrstate == ERFON && |
cc7dc0c4 | 144 | rtlhal->interface == INTF_PCI) { |
0c817338 | 145 | if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) && |
cc7dc0c4 | 146 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
147 | rtlhal->interface == INTF_PCI) { |
148 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 149 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
150 | } |
151 | } | |
152 | ||
4b9d8d67 | 153 | rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate, RF_CHANGE_BY_IPS); |
0c817338 LF |
154 | |
155 | if (ppsc->inactive_pwrstate == ERFOFF && | |
156 | rtlhal->interface == INTF_PCI) { | |
cc7dc0c4 C |
157 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && |
158 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
0c817338 | 159 | rtlpriv->intf_ops->enable_aspm(hw); |
cc7dc0c4 | 160 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
161 | } |
162 | } | |
163 | ||
7ea47240 | 164 | ppsc->swrf_processing = false; |
0c817338 LF |
165 | } |
166 | ||
167 | void rtl_ips_nic_off_wq_callback(void *data) | |
168 | { | |
169 | struct rtl_works *rtlworks = | |
170 | container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq); | |
171 | struct ieee80211_hw *hw = rtlworks->hw; | |
172 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
173 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
174 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
175 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
176 | enum rf_pwrstate rtstate; | |
177 | ||
178 | if (mac->opmode != NL80211_IFTYPE_STATION) { | |
179 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
f30d7507 | 180 | "not station return\n"); |
0c817338 LF |
181 | return; |
182 | } | |
183 | ||
cc7dc0c4 C |
184 | if (mac->link_state > MAC80211_NOLINK) |
185 | return; | |
186 | ||
0c817338 LF |
187 | if (is_hal_stop(rtlhal)) |
188 | return; | |
189 | ||
190 | if (rtlpriv->sec.being_setkey) | |
191 | return; | |
192 | ||
7ea47240 | 193 | if (ppsc->inactiveps) { |
0c817338 LF |
194 | rtstate = ppsc->rfpwr_state; |
195 | ||
196 | /* | |
197 | *Do not enter IPS in the following conditions: | |
198 | *(1) RF is already OFF or Sleep | |
7ea47240 | 199 | *(2) swrf_processing (indicates the IPS is still under going) |
0c817338 LF |
200 | *(3) Connectted (only disconnected can trigger IPS) |
201 | *(4) IBSS (send Beacon) | |
202 | *(5) AP mode (send Beacon) | |
203 | *(6) monitor mode (rcv packet) | |
204 | */ | |
205 | ||
206 | if (rtstate == ERFON && | |
7ea47240 | 207 | !ppsc->swrf_processing && |
0c817338 LF |
208 | (mac->link_state == MAC80211_NOLINK) && |
209 | !mac->act_scanning) { | |
210 | RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, | |
f30d7507 | 211 | "IPSEnter(): Turn off RF\n"); |
0c817338 LF |
212 | |
213 | ppsc->inactive_pwrstate = ERFOFF; | |
7ea47240 | 214 | ppsc->in_powersavemode = true; |
0c817338 LF |
215 | |
216 | /*rtl_pci_reset_trx_ring(hw); */ | |
217 | _rtl_ps_inactive_ps(hw); | |
218 | } | |
219 | } | |
220 | } | |
221 | ||
222 | void rtl_ips_nic_off(struct ieee80211_hw *hw) | |
223 | { | |
224 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
225 | ||
226 | /* | |
227 | *because when link with ap, mac80211 will ask us | |
228 | *to disable nic quickly after scan before linking, | |
229 | *this will cause link failed, so we delay 100ms here | |
230 | */ | |
231 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
232 | &rtlpriv->works.ips_nic_off_wq, MSECS(100)); | |
233 | } | |
234 | ||
235 | void rtl_ips_nic_on(struct ieee80211_hw *hw) | |
236 | { | |
237 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
cc7dc0c4 | 238 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
0c817338 LF |
239 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); |
240 | enum rf_pwrstate rtstate; | |
b9116b9a | 241 | unsigned long flags; |
0c817338 | 242 | |
cc7dc0c4 C |
243 | if (mac->opmode != NL80211_IFTYPE_STATION) |
244 | return; | |
245 | ||
b9116b9a | 246 | spin_lock_irqsave(&rtlpriv->locks.ips_lock, flags); |
0c817338 | 247 | |
7ea47240 | 248 | if (ppsc->inactiveps) { |
0c817338 LF |
249 | rtstate = ppsc->rfpwr_state; |
250 | ||
251 | if (rtstate != ERFON && | |
7ea47240 | 252 | !ppsc->swrf_processing && |
0c817338 LF |
253 | ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) { |
254 | ||
255 | ppsc->inactive_pwrstate = ERFON; | |
7ea47240 | 256 | ppsc->in_powersavemode = false; |
0c817338 LF |
257 | |
258 | _rtl_ps_inactive_ps(hw); | |
259 | } | |
260 | } | |
261 | ||
b9116b9a | 262 | spin_unlock_irqrestore(&rtlpriv->locks.ips_lock, flags); |
0c817338 LF |
263 | } |
264 | ||
265 | /*for FW LPS*/ | |
266 | ||
267 | /* | |
268 | *Determine if we can set Fw into PS mode | |
269 | *in current condition.Return TRUE if it | |
270 | *can enter PS mode. | |
271 | */ | |
272 | static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw) | |
273 | { | |
274 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
275 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
276 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
277 | u32 ps_timediff; | |
278 | ||
279 | ps_timediff = jiffies_to_msecs(jiffies - | |
280 | ppsc->last_delaylps_stamp_jiffies); | |
281 | ||
282 | if (ps_timediff < 2000) { | |
283 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 284 | "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n"); |
0c817338 LF |
285 | return false; |
286 | } | |
287 | ||
288 | if (mac->link_state != MAC80211_LINKED) | |
289 | return false; | |
290 | ||
291 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
292 | return false; | |
293 | ||
294 | return true; | |
295 | } | |
296 | ||
297 | /* Change current and default preamble mode.*/ | |
298 | static void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode) | |
299 | { | |
300 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
301 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
302 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
303 | u8 rpwm_val, fw_pwrmode; | |
304 | ||
305 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
306 | return; | |
307 | ||
308 | if (mac->link_state != MAC80211_LINKED) | |
309 | return; | |
310 | ||
311 | if (ppsc->dot11_psmode == rt_psmode) | |
312 | return; | |
313 | ||
314 | /* Update power save mode configured. */ | |
315 | ppsc->dot11_psmode = rt_psmode; | |
316 | ||
317 | /* | |
318 | *<FW control LPS> | |
319 | *1. Enter PS mode | |
320 | * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode | |
321 | * cmd to set Fw into PS mode. | |
322 | *2. Leave PS mode | |
323 | * Send H2C fw_pwrmode cmd to Fw to set Fw into Active | |
324 | * mode and set RPWM to turn RF on. | |
325 | */ | |
326 | ||
cc7dc0c4 | 327 | if ((ppsc->fwctrl_lps) && ppsc->report_linked) { |
7ea47240 | 328 | bool fw_current_inps; |
0c817338 LF |
329 | if (ppsc->dot11_psmode == EACTIVE) { |
330 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
331 | "FW LPS leave ps_mode:%x\n", |
332 | FW_PS_ACTIVE_MODE); | |
0c817338 LF |
333 | |
334 | rpwm_val = 0x0C; /* RF on */ | |
335 | fw_pwrmode = FW_PS_ACTIVE_MODE; | |
336 | rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SET_RPWM, | |
337 | (u8 *) (&rpwm_val)); | |
338 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
339 | HW_VAR_H2C_FW_PWRMODE, | |
340 | (u8 *) (&fw_pwrmode)); | |
7ea47240 | 341 | fw_current_inps = false; |
0c817338 LF |
342 | |
343 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
344 | HW_VAR_FW_PSMODE_STATUS, | |
7ea47240 | 345 | (u8 *) (&fw_current_inps)); |
0c817338 LF |
346 | |
347 | } else { | |
348 | if (rtl_get_fwlps_doze(hw)) { | |
349 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
350 | "FW LPS enter ps_mode:%x\n", |
351 | ppsc->fwctrl_psmode); | |
0c817338 LF |
352 | |
353 | rpwm_val = 0x02; /* RF off */ | |
7ea47240 | 354 | fw_current_inps = true; |
0c817338 LF |
355 | rtlpriv->cfg->ops->set_hw_reg(hw, |
356 | HW_VAR_FW_PSMODE_STATUS, | |
7ea47240 | 357 | (u8 *) (&fw_current_inps)); |
0c817338 LF |
358 | rtlpriv->cfg->ops->set_hw_reg(hw, |
359 | HW_VAR_H2C_FW_PWRMODE, | |
360 | (u8 *) (&ppsc->fwctrl_psmode)); | |
361 | ||
362 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
363 | HW_VAR_SET_RPWM, | |
364 | (u8 *) (&rpwm_val)); | |
365 | } else { | |
366 | /* Reset the power save related parameters. */ | |
367 | ppsc->dot11_psmode = EACTIVE; | |
368 | } | |
369 | } | |
370 | } | |
371 | } | |
372 | ||
373 | /*Enter the leisure power save mode.*/ | |
374 | void rtl_lps_enter(struct ieee80211_hw *hw) | |
375 | { | |
376 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
377 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
378 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
0c817338 | 379 | |
cc7dc0c4 | 380 | if (!ppsc->fwctrl_lps) |
0c817338 LF |
381 | return; |
382 | ||
383 | if (rtlpriv->sec.being_setkey) | |
384 | return; | |
385 | ||
7ea47240 | 386 | if (rtlpriv->link_info.busytraffic) |
0c817338 LF |
387 | return; |
388 | ||
389 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
390 | if (mac->cnt_after_linked < 5) | |
391 | return; | |
392 | ||
393 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
394 | return; | |
395 | ||
396 | if (mac->link_state != MAC80211_LINKED) | |
397 | return; | |
398 | ||
6539306b | 399 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 400 | |
cc7dc0c4 C |
401 | /* Idle for a while if we connect to AP a while ago. */ |
402 | if (mac->cnt_after_linked >= 2) { | |
403 | if (ppsc->dot11_psmode == EACTIVE) { | |
404 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 405 | "Enter 802.11 power save mode...\n"); |
0c817338 | 406 | |
cc7dc0c4 | 407 | rtl_lps_set_psmode(hw, EAUTOPS); |
0c817338 LF |
408 | } |
409 | } | |
cc7dc0c4 | 410 | |
6539306b | 411 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 LF |
412 | } |
413 | ||
414 | /*Leave the leisure power save mode.*/ | |
415 | void rtl_lps_leave(struct ieee80211_hw *hw) | |
416 | { | |
417 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
418 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
419 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
0c817338 | 420 | |
6539306b | 421 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 422 | |
cc7dc0c4 | 423 | if (ppsc->fwctrl_lps) { |
0c817338 LF |
424 | if (ppsc->dot11_psmode != EACTIVE) { |
425 | ||
426 | /*FIX ME */ | |
427 | rtlpriv->cfg->ops->enable_interrupt(hw); | |
428 | ||
429 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
cc7dc0c4 | 430 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
431 | rtlhal->interface == INTF_PCI) { |
432 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 433 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
434 | } |
435 | ||
436 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 437 | "Busy Traffic,Leave 802.11 power save..\n"); |
0c817338 LF |
438 | |
439 | rtl_lps_set_psmode(hw, EACTIVE); | |
440 | } | |
441 | } | |
6539306b | 442 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 | 443 | } |
cc7dc0c4 C |
444 | |
445 | /* For sw LPS*/ | |
446 | void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len) | |
447 | { | |
448 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
449 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
450 | struct ieee80211_hdr *hdr = (void *) data; | |
451 | struct ieee80211_tim_ie *tim_ie; | |
452 | u8 *tim; | |
453 | u8 tim_len; | |
454 | bool u_buffed; | |
455 | bool m_buffed; | |
456 | ||
457 | if (mac->opmode != NL80211_IFTYPE_STATION) | |
458 | return; | |
459 | ||
460 | if (!rtlpriv->psc.swctrl_lps) | |
461 | return; | |
462 | ||
463 | if (rtlpriv->mac80211.link_state != MAC80211_LINKED) | |
464 | return; | |
465 | ||
466 | if (!rtlpriv->psc.sw_ps_enabled) | |
467 | return; | |
468 | ||
469 | if (rtlpriv->psc.fwctrl_lps) | |
470 | return; | |
471 | ||
472 | if (likely(!(hw->conf.flags & IEEE80211_CONF_PS))) | |
473 | return; | |
474 | ||
475 | /* check if this really is a beacon */ | |
476 | if (!ieee80211_is_beacon(hdr->frame_control)) | |
477 | return; | |
478 | ||
479 | /* min. beacon length + FCS_LEN */ | |
480 | if (len <= 40 + FCS_LEN) | |
481 | return; | |
482 | ||
483 | /* and only beacons from the associated BSSID, please */ | |
484 | if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid)) | |
485 | return; | |
486 | ||
487 | rtlpriv->psc.last_beacon = jiffies; | |
488 | ||
489 | tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM); | |
490 | if (!tim) | |
491 | return; | |
492 | ||
493 | if (tim[1] < sizeof(*tim_ie)) | |
494 | return; | |
495 | ||
496 | tim_len = tim[1]; | |
497 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; | |
498 | ||
499 | if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period)) | |
500 | rtlpriv->psc.dtim_counter = tim_ie->dtim_count; | |
501 | ||
502 | /* Check whenever the PHY can be turned off again. */ | |
503 | ||
504 | /* 1. What about buffered unicast traffic for our AID? */ | |
505 | u_buffed = ieee80211_check_tim(tim_ie, tim_len, | |
506 | rtlpriv->mac80211.assoc_id); | |
507 | ||
508 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ | |
509 | m_buffed = tim_ie->bitmap_ctrl & 0x01; | |
510 | rtlpriv->psc.multi_buffered = m_buffed; | |
511 | ||
512 | /* unicast will process by mac80211 through | |
513 | * set ~IEEE80211_CONF_PS, So we just check | |
514 | * multicast frames here */ | |
515 | if (!m_buffed) { | |
516 | /* back to low-power land. and delay is | |
517 | * prevent null power save frame tx fail */ | |
518 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
519 | &rtlpriv->works.ps_work, MSECS(5)); | |
520 | } else { | |
f30d7507 JP |
521 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, |
522 | "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed); | |
cc7dc0c4 C |
523 | } |
524 | } | |
525 | ||
526 | void rtl_swlps_rf_awake(struct ieee80211_hw *hw) | |
527 | { | |
528 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
529 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
530 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
cc7dc0c4 C |
531 | |
532 | if (!rtlpriv->psc.swctrl_lps) | |
533 | return; | |
534 | if (mac->link_state != MAC80211_LINKED) | |
535 | return; | |
536 | ||
537 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
538 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
539 | rtlpriv->intf_ops->disable_aspm(hw); | |
540 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
541 | } | |
542 | ||
6539306b | 543 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 544 | rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); |
6539306b | 545 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
546 | } |
547 | ||
548 | void rtl_swlps_rfon_wq_callback(void *data) | |
549 | { | |
550 | struct rtl_works *rtlworks = | |
551 | container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq); | |
552 | struct ieee80211_hw *hw = rtlworks->hw; | |
553 | ||
554 | rtl_swlps_rf_awake(hw); | |
555 | } | |
556 | ||
557 | void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) | |
558 | { | |
559 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
560 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
561 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
cc7dc0c4 C |
562 | u8 sleep_intv; |
563 | ||
564 | if (!rtlpriv->psc.sw_ps_enabled) | |
565 | return; | |
566 | ||
567 | if ((rtlpriv->sec.being_setkey) || | |
568 | (mac->opmode == NL80211_IFTYPE_ADHOC)) | |
569 | return; | |
570 | ||
571 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
572 | if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5)) | |
573 | return; | |
574 | ||
575 | if (rtlpriv->link_info.busytraffic) | |
576 | return; | |
577 | ||
6539306b | 578 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 579 | rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); |
6539306b | 580 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
581 | |
582 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && | |
583 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
584 | rtlpriv->intf_ops->enable_aspm(hw); | |
585 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
586 | } | |
587 | ||
588 | /* here is power save alg, when this beacon is DTIM | |
589 | * we will set sleep time to dtim_period * n; | |
590 | * when this beacon is not DTIM, we will set sleep | |
591 | * time to sleep_intv = rtlpriv->psc.dtim_counter or | |
592 | * MAX_SW_LPS_SLEEP_INTV(default set to 5) */ | |
593 | ||
594 | if (rtlpriv->psc.dtim_counter == 0) { | |
595 | if (hw->conf.ps_dtim_period == 1) | |
596 | sleep_intv = hw->conf.ps_dtim_period * 2; | |
597 | else | |
598 | sleep_intv = hw->conf.ps_dtim_period; | |
599 | } else { | |
600 | sleep_intv = rtlpriv->psc.dtim_counter; | |
601 | } | |
602 | ||
603 | if (sleep_intv > MAX_SW_LPS_SLEEP_INTV) | |
604 | sleep_intv = MAX_SW_LPS_SLEEP_INTV; | |
605 | ||
606 | /* this print should always be dtim_conter = 0 & | |
607 | * sleep = dtim_period, that meaons, we should | |
608 | * awake before every dtim */ | |
609 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, | |
f30d7507 JP |
610 | "dtim_counter:%x will sleep :%d beacon_intv\n", |
611 | rtlpriv->psc.dtim_counter, sleep_intv); | |
cc7dc0c4 C |
612 | |
613 | /* we tested that 40ms is enough for sw & hw sw delay */ | |
614 | queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq, | |
615 | MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40)); | |
616 | } | |
617 | ||
618 | ||
619 | void rtl_swlps_wq_callback(void *data) | |
620 | { | |
621 | struct rtl_works *rtlworks = container_of_dwork_rtl(data, | |
622 | struct rtl_works, | |
623 | ps_work); | |
624 | struct ieee80211_hw *hw = rtlworks->hw; | |
625 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
626 | bool ps = false; | |
627 | ||
628 | ps = (hw->conf.flags & IEEE80211_CONF_PS); | |
629 | ||
630 | /* we can sleep after ps null send ok */ | |
631 | if (rtlpriv->psc.state_inap) { | |
632 | rtl_swlps_rf_sleep(hw); | |
633 | ||
634 | if (rtlpriv->psc.state && !ps) { | |
635 | rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies - | |
636 | rtlpriv->psc.last_action); | |
637 | } | |
638 | ||
639 | if (ps) | |
640 | rtlpriv->psc.last_slept = jiffies; | |
641 | ||
642 | rtlpriv->psc.last_action = jiffies; | |
643 | rtlpriv->psc.state = ps; | |
644 | } | |
645 | } |