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5449c685 FB |
1 | /* |
2 | * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
612822f5 | 19 | * |
5449c685 FB |
20 | * File: power.c |
21 | * | |
658ce9d6 | 22 | * Purpose: Handles 802.11 power management functions |
5449c685 FB |
23 | * |
24 | * Author: Lyndon Chen | |
25 | * | |
26 | * Date: July 17, 2002 | |
27 | * | |
28 | * Functions: | |
29 | * PSvEnablePowerSaving - Enable Power Saving Mode | |
30 | * PSvDiasblePowerSaving - Disable Power Saving Mode | |
31 | * PSbConsiderPowerDown - Decide if we can Power Down | |
32 | * PSvSendPSPOLL - Send PS-POLL packet | |
33 | * PSbSendNullPacket - Send Null packet | |
34 | * PSbIsNextTBTTWakeUp - Decide if we need to wake up at next Beacon | |
35 | * | |
36 | * Revision History: | |
37 | * | |
38 | */ | |
39 | ||
5449c685 | 40 | #include "ttype.h" |
5449c685 | 41 | #include "mac.h" |
5449c685 | 42 | #include "device.h" |
5449c685 | 43 | #include "wmgr.h" |
5449c685 | 44 | #include "power.h" |
5449c685 | 45 | #include "wcmd.h" |
5449c685 | 46 | #include "rxtx.h" |
5449c685 | 47 | #include "card.h" |
5449c685 FB |
48 | |
49 | /*--------------------- Static Definitions -------------------------*/ | |
50 | ||
51 | ||
52 | ||
53 | ||
54 | /*--------------------- Static Classes ----------------------------*/ | |
55 | ||
56 | /*--------------------- Static Variables --------------------------*/ | |
57 | static int msglevel =MSG_LEVEL_INFO; | |
58 | /*--------------------- Static Functions --------------------------*/ | |
59 | ||
60 | ||
61 | /*--------------------- Export Variables --------------------------*/ | |
62 | ||
63 | ||
64 | /*--------------------- Export Functions --------------------------*/ | |
65 | ||
66 | /*+ | |
67 | * | |
68 | * Routine Description: | |
69 | * Enable hw power saving functions | |
70 | * | |
71 | * Return Value: | |
72 | * None. | |
73 | * | |
74 | -*/ | |
75 | ||
76 | ||
6b35b7b3 | 77 | void |
5449c685 | 78 | PSvEnablePowerSaving( |
3a215e0f | 79 | void *hDeviceContext, |
2986db5f | 80 | unsigned short wListenInterval |
5449c685 FB |
81 | ) |
82 | { | |
83 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
84 | PSMgmtObject pMgmt = pDevice->pMgmt; | |
2986db5f | 85 | unsigned short wAID = pMgmt->wCurrAID | BIT14 | BIT15; |
5449c685 FB |
86 | |
87 | // set period of power up before TBTT | |
88 | VNSvOutPortW(pDevice->PortOffset + MAC_REG_PWBT, C_PWBT); | |
89 | if (pDevice->eOPMode != OP_MODE_ADHOC) { | |
90 | // set AID | |
91 | VNSvOutPortW(pDevice->PortOffset + MAC_REG_AIDATIM, wAID); | |
92 | } else { | |
93 | // set ATIM Window | |
94 | MACvWriteATIMW(pDevice->PortOffset, pMgmt->wCurrATIMWindow); | |
95 | } | |
96 | // Set AutoSleep | |
97 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); | |
98 | // Set HWUTSF | |
99 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF); | |
100 | ||
101 | if (wListenInterval >= 2) { | |
102 | // clear always listen beacon | |
103 | MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); | |
104 | //pDevice->wCFG &= ~CFG_ALB; | |
105 | // first time set listen next beacon | |
106 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN); | |
107 | pMgmt->wCountToWakeUp = wListenInterval; | |
108 | } | |
109 | else { | |
110 | // always listen beacon | |
111 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); | |
112 | //pDevice->wCFG |= CFG_ALB; | |
113 | pMgmt->wCountToWakeUp = 0; | |
114 | } | |
115 | ||
116 | // enable power saving hw function | |
117 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PSEN); | |
1b12068a | 118 | pDevice->bEnablePSMode = true; |
5449c685 FB |
119 | |
120 | if (pDevice->eOPMode == OP_MODE_ADHOC) { | |
3a215e0f | 121 | // bMgrPrepareBeaconToSend((void *)pDevice, pMgmt); |
5449c685 FB |
122 | } |
123 | // We don't send null pkt in ad hoc mode since beacon will handle this. | |
124 | else if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) { | |
125 | PSbSendNullPacket(pDevice); | |
126 | } | |
1b12068a | 127 | pDevice->bPWBitOn = true; |
7e809a9b | 128 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS:Power Saving Mode Enable... \n"); |
5449c685 FB |
129 | return; |
130 | } | |
131 | ||
132 | ||
133 | ||
134 | ||
135 | ||
136 | ||
137 | /*+ | |
138 | * | |
139 | * Routine Description: | |
140 | * Disable hw power saving functions | |
141 | * | |
142 | * Return Value: | |
143 | * None. | |
144 | * | |
145 | -*/ | |
146 | ||
6b35b7b3 | 147 | void |
5449c685 | 148 | PSvDisablePowerSaving( |
3a215e0f | 149 | void *hDeviceContext |
5449c685 FB |
150 | ) |
151 | { | |
152 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
153 | // PSMgmtObject pMgmt = pDevice->pMgmt; | |
154 | ||
155 | // disable power saving hw function | |
156 | MACbPSWakeup(pDevice->PortOffset); | |
157 | //clear AutoSleep | |
158 | MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); | |
159 | //clear HWUTSF | |
160 | MACvRegBitsOff(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF); | |
161 | // set always listen beacon | |
162 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); | |
163 | ||
5a5a2a6a | 164 | pDevice->bEnablePSMode = false; |
5449c685 FB |
165 | |
166 | if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) { | |
167 | PSbSendNullPacket(pDevice); | |
168 | } | |
5a5a2a6a | 169 | pDevice->bPWBitOn = false; |
5449c685 FB |
170 | return; |
171 | } | |
172 | ||
173 | ||
174 | /*+ | |
175 | * | |
176 | * Routine Description: | |
177 | * Consider to power down when no more packets to tx or rx. | |
178 | * | |
179 | * Return Value: | |
1b12068a | 180 | * true, if power down success |
5a5a2a6a | 181 | * false, if fail |
5449c685 FB |
182 | -*/ |
183 | ||
184 | ||
7b6a0013 | 185 | bool |
5449c685 | 186 | PSbConsiderPowerDown( |
3a215e0f | 187 | void *hDeviceContext, |
7b6a0013 CC |
188 | bool bCheckRxDMA, |
189 | bool bCheckCountToWakeUp | |
5449c685 FB |
190 | ) |
191 | { | |
192 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
193 | PSMgmtObject pMgmt = pDevice->pMgmt; | |
b6e95cd5 | 194 | unsigned int uIdx; |
5449c685 FB |
195 | |
196 | // check if already in Doze mode | |
197 | if (MACbIsRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PS)) | |
1b12068a | 198 | return true; |
5449c685 FB |
199 | |
200 | if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { | |
201 | // check if in TIM wake period | |
202 | if (pMgmt->bInTIMWake) | |
5a5a2a6a | 203 | return false; |
5449c685 FB |
204 | } |
205 | ||
206 | // check scan state | |
207 | if (pDevice->bCmdRunning) | |
5a5a2a6a | 208 | return false; |
5449c685 FB |
209 | |
210 | // Froce PSEN on | |
211 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PSEN); | |
212 | ||
213 | // check if all TD are empty, | |
214 | for (uIdx = 0; uIdx < TYPE_MAXTD; uIdx ++) { | |
215 | if (pDevice->iTDUsed[uIdx] != 0) | |
5a5a2a6a | 216 | return false; |
5449c685 FB |
217 | } |
218 | ||
219 | // check if rx isr is clear | |
220 | if (bCheckRxDMA && | |
221 | ((pDevice->dwIsr& ISR_RXDMA0) != 0) && | |
222 | ((pDevice->dwIsr & ISR_RXDMA1) != 0)){ | |
5a5a2a6a | 223 | return false; |
9fc86028 | 224 | } |
5449c685 FB |
225 | |
226 | if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { | |
227 | if (bCheckCountToWakeUp && | |
228 | (pMgmt->wCountToWakeUp == 0 || pMgmt->wCountToWakeUp == 1)) { | |
5a5a2a6a | 229 | return false; |
5449c685 FB |
230 | } |
231 | } | |
232 | ||
233 | // no Tx, no Rx isr, now go to Doze | |
234 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_GO2DOZE); | |
7e809a9b | 235 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Go to Doze ZZZZZZZZZZZZZZZ\n"); |
1b12068a | 236 | return true; |
5449c685 FB |
237 | } |
238 | ||
239 | ||
240 | ||
241 | /*+ | |
242 | * | |
243 | * Routine Description: | |
244 | * Send PS-POLL packet | |
245 | * | |
246 | * Return Value: | |
247 | * None. | |
248 | * | |
249 | -*/ | |
250 | ||
251 | ||
252 | ||
6b35b7b3 | 253 | void |
5449c685 | 254 | PSvSendPSPOLL( |
3a215e0f | 255 | void *hDeviceContext |
5449c685 FB |
256 | ) |
257 | { | |
258 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
259 | PSMgmtObject pMgmt = pDevice->pMgmt; | |
260 | PSTxMgmtPacket pTxPacket = NULL; | |
261 | ||
262 | ||
263 | memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_HDR_ADDR2_LEN); | |
264 | pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; | |
2989e96f | 265 | pTxPacket->p80211Header = (PUWLAN_80211HDR)((unsigned char *)pTxPacket + sizeof(STxMgmtPacket)); |
5449c685 FB |
266 | pTxPacket->p80211Header->sA2.wFrameCtl = cpu_to_le16( |
267 | ( | |
268 | WLAN_SET_FC_FTYPE(WLAN_TYPE_CTL) | | |
269 | WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_PSPOLL) | | |
270 | WLAN_SET_FC_PWRMGT(0) | |
271 | )); | |
272 | pTxPacket->p80211Header->sA2.wDurationID = pMgmt->wCurrAID | BIT14 | BIT15; | |
273 | memcpy(pTxPacket->p80211Header->sA2.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); | |
274 | memcpy(pTxPacket->p80211Header->sA2.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); | |
275 | pTxPacket->cbMPDULen = WLAN_HDR_ADDR2_LEN; | |
276 | pTxPacket->cbPayloadLen = 0; | |
277 | // send the frame | |
278 | if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { | |
7e809a9b | 279 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet failed..\n"); |
5449c685 FB |
280 | } |
281 | else { | |
7e809a9b | 282 | // DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet success..\n"); |
5449c685 FB |
283 | }; |
284 | ||
285 | return; | |
286 | } | |
287 | ||
288 | ||
289 | ||
290 | /*+ | |
291 | * | |
292 | * Routine Description: | |
293 | * Send NULL packet to AP for notification power state of STA | |
294 | * | |
295 | * Return Value: | |
296 | * None. | |
297 | * | |
298 | -*/ | |
7b6a0013 | 299 | bool |
5449c685 | 300 | PSbSendNullPacket( |
3a215e0f | 301 | void *hDeviceContext |
5449c685 FB |
302 | ) |
303 | { | |
304 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
305 | PSTxMgmtPacket pTxPacket = NULL; | |
306 | PSMgmtObject pMgmt = pDevice->pMgmt; | |
b6e95cd5 | 307 | unsigned int uIdx; |
5449c685 FB |
308 | |
309 | ||
5a5a2a6a CC |
310 | if (pDevice->bLinkPass == false) { |
311 | return false; | |
5449c685 FB |
312 | } |
313 | #ifdef TxInSleep | |
5a5a2a6a CC |
314 | if ((pDevice->bEnablePSMode == false) && |
315 | (pDevice->fTxDataInSleep == false)){ | |
316 | return false; | |
5449c685 FB |
317 | } |
318 | #else | |
5a5a2a6a CC |
319 | if (pDevice->bEnablePSMode == false) { |
320 | return false; | |
5449c685 FB |
321 | } |
322 | #endif | |
323 | if (pDevice->bEnablePSMode) { | |
324 | for (uIdx = 0; uIdx < TYPE_MAXTD; uIdx ++) { | |
325 | if (pDevice->iTDUsed[uIdx] != 0) | |
5a5a2a6a | 326 | return false; |
5449c685 FB |
327 | } |
328 | } | |
329 | ||
330 | memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_NULLDATA_FR_MAXLEN); | |
331 | pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; | |
2989e96f | 332 | pTxPacket->p80211Header = (PUWLAN_80211HDR)((unsigned char *)pTxPacket + sizeof(STxMgmtPacket)); |
5449c685 FB |
333 | |
334 | if (pDevice->bEnablePSMode) { | |
335 | ||
336 | pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16( | |
337 | ( | |
338 | WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) | | |
339 | WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) | | |
340 | WLAN_SET_FC_PWRMGT(1) | |
341 | )); | |
342 | } | |
343 | else { | |
344 | pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16( | |
345 | ( | |
346 | WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) | | |
347 | WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) | | |
348 | WLAN_SET_FC_PWRMGT(0) | |
349 | )); | |
350 | } | |
351 | ||
352 | if(pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { | |
2986db5f | 353 | pTxPacket->p80211Header->sA3.wFrameCtl |= cpu_to_le16((unsigned short)WLAN_SET_FC_TODS(1)); |
5449c685 FB |
354 | } |
355 | ||
356 | memcpy(pTxPacket->p80211Header->sA3.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); | |
357 | memcpy(pTxPacket->p80211Header->sA3.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); | |
358 | memcpy(pTxPacket->p80211Header->sA3.abyAddr3, pMgmt->abyCurrBSSID, WLAN_BSSID_LEN); | |
359 | pTxPacket->cbMPDULen = WLAN_HDR_ADDR3_LEN; | |
360 | pTxPacket->cbPayloadLen = 0; | |
361 | // send the frame | |
362 | if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { | |
7e809a9b | 363 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet failed !\n"); |
5a5a2a6a | 364 | return false; |
5449c685 FB |
365 | } |
366 | else { | |
367 | ||
7e809a9b | 368 | // DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet success....\n"); |
5449c685 FB |
369 | } |
370 | ||
371 | ||
1b12068a | 372 | return true ; |
5449c685 FB |
373 | } |
374 | ||
375 | /*+ | |
376 | * | |
377 | * Routine Description: | |
378 | * Check if Next TBTT must wake up | |
379 | * | |
380 | * Return Value: | |
381 | * None. | |
382 | * | |
383 | -*/ | |
384 | ||
7b6a0013 | 385 | bool |
5449c685 | 386 | PSbIsNextTBTTWakeUp( |
3a215e0f | 387 | void *hDeviceContext |
5449c685 FB |
388 | ) |
389 | { | |
390 | ||
391 | PSDevice pDevice = (PSDevice)hDeviceContext; | |
392 | PSMgmtObject pMgmt = pDevice->pMgmt; | |
7b6a0013 | 393 | bool bWakeUp = false; |
5449c685 FB |
394 | |
395 | if (pMgmt->wListenInterval >= 2) { | |
396 | if (pMgmt->wCountToWakeUp == 0) { | |
397 | pMgmt->wCountToWakeUp = pMgmt->wListenInterval; | |
398 | } | |
399 | ||
400 | pMgmt->wCountToWakeUp --; | |
401 | ||
402 | if (pMgmt->wCountToWakeUp == 1) { | |
403 | // Turn on wake up to listen next beacon | |
404 | MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN); | |
1b12068a | 405 | bWakeUp = true; |
5449c685 FB |
406 | } |
407 | ||
408 | } | |
409 | ||
410 | return bWakeUp; | |
411 | } | |
412 |