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92b96797 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 | * | |
19 | * | |
20 | * File: power.c | |
21 | * | |
a0a1f61a | 22 | * Purpose: Handles 802.11 power management functions |
92b96797 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 | ||
92b96797 | 40 | #include "ttype.h" |
92b96797 | 41 | #include "mac.h" |
92b96797 | 42 | #include "device.h" |
92b96797 | 43 | #include "wmgr.h" |
92b96797 | 44 | #include "power.h" |
92b96797 | 45 | #include "wcmd.h" |
92b96797 | 46 | #include "rxtx.h" |
92b96797 | 47 | #include "card.h" |
92b96797 | 48 | #include "control.h" |
92b96797 | 49 | #include "rndis.h" |
92b96797 FB |
50 | |
51 | /*--------------------- Static Definitions -------------------------*/ | |
52 | ||
92b96797 FB |
53 | /*--------------------- Static Classes ----------------------------*/ |
54 | ||
55 | /*--------------------- Static Variables --------------------------*/ | |
f9cfbe94 | 56 | static int msglevel = MSG_LEVEL_INFO; |
92b96797 FB |
57 | /*--------------------- Static Functions --------------------------*/ |
58 | ||
92b96797 FB |
59 | /*--------------------- Export Variables --------------------------*/ |
60 | ||
92b96797 FB |
61 | /*--------------------- Export Functions --------------------------*/ |
62 | ||
7404eab2 | 63 | /* |
92b96797 FB |
64 | * |
65 | * Routine Description: | |
66 | * Enable hw power saving functions | |
67 | * | |
68 | * Return Value: | |
69 | * None. | |
70 | * | |
7404eab2 | 71 | */ |
92b96797 | 72 | |
0cbd8d98 AM |
73 | void PSvEnablePowerSaving(void *hDeviceContext, |
74 | WORD wListenInterval) | |
92b96797 | 75 | { |
f9cfbe94 PW |
76 | PSDevice pDevice = (PSDevice)hDeviceContext; |
77 | PSMgmtObject pMgmt = &(pDevice->sMgmtObj); | |
78 | WORD wAID = pMgmt->wCurrAID | BIT14 | BIT15; | |
92b96797 | 79 | |
f9cfbe94 PW |
80 | /* set period of power up before TBTT */ |
81 | MACvWriteWord(pDevice, MAC_REG_PWBT, C_PWBT); | |
92b96797 | 82 | |
f9cfbe94 PW |
83 | if (pDevice->eOPMode != OP_MODE_ADHOC) { |
84 | /* set AID */ | |
85 | MACvWriteWord(pDevice, MAC_REG_AIDATIM, wAID); | |
86 | } else { | |
7404eab2 PW |
87 | /* set ATIM Window */ |
88 | /* MACvWriteATIMW(pDevice->PortOffset, pMgmt->wCurrATIMWindow); */ | |
f9cfbe94 | 89 | } |
92b96797 | 90 | |
7404eab2 PW |
91 | /* Warren:06-18-2004,the sequence must follow PSEN->AUTOSLEEP->GO2DOZE */ |
92 | /* enable power saving hw function */ | |
f9cfbe94 | 93 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_PSEN); |
92b96797 | 94 | |
7404eab2 | 95 | /* Set AutoSleep */ |
f9cfbe94 | 96 | MACvRegBitsOn(pDevice, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); |
92b96797 | 97 | |
7404eab2 | 98 | /* Warren:MUST turn on this once before turn on AUTOSLEEP ,or the AUTOSLEEP doesn't work */ |
f9cfbe94 | 99 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_GO2DOZE); |
92b96797 | 100 | |
f9cfbe94 | 101 | if (wListenInterval >= 2) { |
92b96797 | 102 | |
7404eab2 | 103 | /* clear always listen beacon */ |
f9cfbe94 | 104 | MACvRegBitsOff(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN); |
92b96797 | 105 | |
7404eab2 | 106 | /* first time set listen next beacon */ |
f9cfbe94 | 107 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN); |
92b96797 | 108 | |
f9cfbe94 | 109 | pMgmt->wCountToWakeUp = wListenInterval; |
92b96797 | 110 | |
f9cfbe94 | 111 | } else { |
92b96797 | 112 | |
7404eab2 | 113 | /* always listen beacon */ |
f9cfbe94 | 114 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN); |
92b96797 | 115 | |
f9cfbe94 PW |
116 | pMgmt->wCountToWakeUp = 0; |
117 | } | |
118 | ||
119 | pDevice->bEnablePSMode = TRUE; | |
120 | ||
7404eab2 | 121 | /* We don't send null pkt in ad hoc mode since beacon will handle this. */ |
8c811616 | 122 | if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) |
f9cfbe94 | 123 | PSbSendNullPacket(pDevice); |
f9cfbe94 PW |
124 | |
125 | pDevice->bPWBitOn = TRUE; | |
c5b0b5fc | 126 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS:Power Saving Mode Enable...\n"); |
92b96797 FB |
127 | } |
128 | ||
7404eab2 | 129 | /* |
92b96797 FB |
130 | * |
131 | * Routine Description: | |
132 | * Disable hw power saving functions | |
133 | * | |
134 | * Return Value: | |
135 | * None. | |
136 | * | |
7404eab2 | 137 | */ |
92b96797 | 138 | |
0cbd8d98 | 139 | void PSvDisablePowerSaving(void *hDeviceContext) |
92b96797 | 140 | { |
f9cfbe94 | 141 | PSDevice pDevice = (PSDevice)hDeviceContext; |
7404eab2 | 142 | /* PSMgmtObject pMgmt = &(pDevice->sMgmtObj); */ |
92b96797 | 143 | |
7404eab2 | 144 | /* disable power saving hw function */ |
f9cfbe94 PW |
145 | CONTROLnsRequestOut(pDevice, MESSAGE_TYPE_DISABLE_PS, 0, |
146 | 0, 0, NULL); | |
92b96797 | 147 | |
7404eab2 | 148 | /* clear AutoSleep */ |
f9cfbe94 | 149 | MACvRegBitsOff(pDevice, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); |
92b96797 | 150 | |
7404eab2 | 151 | /* set always listen beacon */ |
f9cfbe94 PW |
152 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN); |
153 | pDevice->bEnablePSMode = FALSE; | |
92b96797 | 154 | |
036dba14 | 155 | if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) |
f9cfbe94 | 156 | PSbSendNullPacket(pDevice); |
92b96797 | 157 | |
f9cfbe94 | 158 | pDevice->bPWBitOn = FALSE; |
92b96797 FB |
159 | } |
160 | ||
7404eab2 | 161 | /* |
92b96797 FB |
162 | * |
163 | * Routine Description: | |
164 | * Consider to power down when no more packets to tx or rx. | |
165 | * | |
166 | * Return Value: | |
167 | * TRUE, if power down success | |
168 | * FALSE, if fail | |
7404eab2 | 169 | */ |
92b96797 | 170 | |
0cbd8d98 AM |
171 | BOOL PSbConsiderPowerDown(void *hDeviceContext, |
172 | BOOL bCheckRxDMA, | |
173 | BOOL bCheckCountToWakeUp) | |
92b96797 | 174 | { |
f9cfbe94 PW |
175 | PSDevice pDevice = (PSDevice)hDeviceContext; |
176 | PSMgmtObject pMgmt = &(pDevice->sMgmtObj); | |
177 | BYTE byData; | |
178 | ||
7404eab2 | 179 | /* check if already in Doze mode */ |
f9cfbe94 PW |
180 | ControlvReadByte(pDevice, MESSAGE_REQUEST_MACREG, |
181 | MAC_REG_PSCTL, &byData); | |
182 | ||
c5b0b5fc | 183 | if ((byData & PSCTL_PS) != 0) |
f9cfbe94 PW |
184 | return TRUE; |
185 | ||
186 | if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { | |
7404eab2 | 187 | /* check if in TIM wake period */ |
f9cfbe94 PW |
188 | if (pMgmt->bInTIMWake) |
189 | return FALSE; | |
190 | } | |
191 | ||
7404eab2 | 192 | /* check scan state */ |
f9cfbe94 PW |
193 | if (pDevice->bCmdRunning) |
194 | return FALSE; | |
195 | ||
7404eab2 | 196 | /* Tx Burst */ |
c5b0b5fc | 197 | if (pDevice->bPSModeTxBurst) |
f9cfbe94 PW |
198 | return FALSE; |
199 | ||
7404eab2 | 200 | /* Froce PSEN on */ |
f9cfbe94 PW |
201 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_PSEN); |
202 | ||
203 | if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { | |
204 | if (bCheckCountToWakeUp && (pMgmt->wCountToWakeUp == 0 | |
205 | || pMgmt->wCountToWakeUp == 1)) { | |
206 | return FALSE; | |
207 | } | |
208 | } | |
209 | ||
210 | pDevice->bPSRxBeacon = TRUE; | |
211 | ||
7404eab2 | 212 | /* no Tx, no Rx isr, now go to Doze */ |
f9cfbe94 PW |
213 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_GO2DOZE); |
214 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Go to Doze ZZZZZZZZZZZZZZZ\n"); | |
215 | return TRUE; | |
92b96797 FB |
216 | } |
217 | ||
7404eab2 | 218 | /* |
92b96797 FB |
219 | * |
220 | * Routine Description: | |
221 | * Send PS-POLL packet | |
222 | * | |
223 | * Return Value: | |
224 | * None. | |
225 | * | |
7404eab2 | 226 | */ |
92b96797 | 227 | |
0cbd8d98 | 228 | void PSvSendPSPOLL(void *hDeviceContext) |
92b96797 | 229 | { |
f9cfbe94 PW |
230 | PSDevice pDevice = (PSDevice)hDeviceContext; |
231 | PSMgmtObject pMgmt = &(pDevice->sMgmtObj); | |
232 | PSTxMgmtPacket pTxPacket = NULL; | |
233 | ||
234 | memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_HDR_ADDR2_LEN); | |
235 | pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; | |
236 | pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket)); | |
237 | pTxPacket->p80211Header->sA2.wFrameCtl = cpu_to_le16( | |
238 | ( | |
239 | WLAN_SET_FC_FTYPE(WLAN_TYPE_CTL) | | |
240 | WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_PSPOLL) | | |
241 | WLAN_SET_FC_PWRMGT(0) | |
242 | )); | |
243 | ||
244 | pTxPacket->p80211Header->sA2.wDurationID = pMgmt->wCurrAID | BIT14 | BIT15; | |
245 | memcpy(pTxPacket->p80211Header->sA2.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); | |
246 | memcpy(pTxPacket->p80211Header->sA2.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); | |
247 | pTxPacket->cbMPDULen = WLAN_HDR_ADDR2_LEN; | |
248 | pTxPacket->cbPayloadLen = 0; | |
249 | ||
e25b75ec | 250 | /* log failure if sending failed */ |
f9cfbe94 PW |
251 | if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { |
252 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet failed..\n"); | |
e25b75ec | 253 | } |
92b96797 FB |
254 | } |
255 | ||
7404eab2 | 256 | /* |
92b96797 FB |
257 | * |
258 | * Routine Description: | |
259 | * Send NULL packet to AP for notification power state of STA | |
260 | * | |
261 | * Return Value: | |
262 | * None. | |
263 | * | |
7404eab2 | 264 | */ |
0cbd8d98 AM |
265 | |
266 | BOOL PSbSendNullPacket(void *hDeviceContext) | |
92b96797 | 267 | { |
f9cfbe94 PW |
268 | PSDevice pDevice = (PSDevice)hDeviceContext; |
269 | PSTxMgmtPacket pTxPacket = NULL; | |
270 | PSMgmtObject pMgmt = &(pDevice->sMgmtObj); | |
b898cf21 | 271 | u16 flags = 0; |
f9cfbe94 | 272 | |
036dba14 | 273 | if (pDevice->bLinkPass == FALSE) |
f9cfbe94 | 274 | return FALSE; |
f9cfbe94 PW |
275 | |
276 | if ((pDevice->bEnablePSMode == FALSE) && | |
036dba14 | 277 | (pDevice->fTxDataInSleep == FALSE)) { |
f9cfbe94 PW |
278 | return FALSE; |
279 | } | |
280 | ||
281 | memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_NULLDATA_FR_MAXLEN); | |
282 | pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; | |
283 | pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket)); | |
284 | ||
b898cf21 PW |
285 | flags = WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) | |
286 | WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL); | |
287 | ||
288 | if (pDevice->bEnablePSMode) | |
289 | flags |= WLAN_SET_FC_PWRMGT(1); | |
290 | else | |
291 | flags |= WLAN_SET_FC_PWRMGT(0); | |
292 | ||
293 | pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16(flags); | |
f9cfbe94 | 294 | |
c5b0b5fc | 295 | if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) |
f9cfbe94 | 296 | pTxPacket->p80211Header->sA3.wFrameCtl |= cpu_to_le16((WORD)WLAN_SET_FC_TODS(1)); |
f9cfbe94 PW |
297 | |
298 | memcpy(pTxPacket->p80211Header->sA3.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); | |
299 | memcpy(pTxPacket->p80211Header->sA3.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); | |
300 | memcpy(pTxPacket->p80211Header->sA3.abyAddr3, pMgmt->abyCurrBSSID, WLAN_BSSID_LEN); | |
301 | pTxPacket->cbMPDULen = WLAN_HDR_ADDR3_LEN; | |
302 | pTxPacket->cbPayloadLen = 0; | |
e25b75ec | 303 | /* log error if sending failed */ |
f9cfbe94 PW |
304 | if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { |
305 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet failed !\n"); | |
306 | return FALSE; | |
f9cfbe94 | 307 | } |
e25b75ec | 308 | return TRUE; |
92b96797 FB |
309 | } |
310 | ||
7404eab2 | 311 | /* |
92b96797 FB |
312 | * |
313 | * Routine Description: | |
314 | * Check if Next TBTT must wake up | |
315 | * | |
316 | * Return Value: | |
317 | * None. | |
318 | * | |
7404eab2 | 319 | */ |
92b96797 | 320 | |
0cbd8d98 | 321 | BOOL PSbIsNextTBTTWakeUp(void *hDeviceContext) |
92b96797 | 322 | { |
f9cfbe94 PW |
323 | PSDevice pDevice = (PSDevice)hDeviceContext; |
324 | PSMgmtObject pMgmt = &(pDevice->sMgmtObj); | |
325 | BOOL bWakeUp = FALSE; | |
326 | ||
327 | if (pMgmt->wListenInterval >= 2) { | |
036dba14 | 328 | if (pMgmt->wCountToWakeUp == 0) |
f9cfbe94 | 329 | pMgmt->wCountToWakeUp = pMgmt->wListenInterval; |
f9cfbe94 | 330 | |
c5b0b5fc | 331 | pMgmt->wCountToWakeUp--; |
f9cfbe94 PW |
332 | |
333 | if (pMgmt->wCountToWakeUp == 1) { | |
7404eab2 | 334 | /* Turn on wake up to listen next beacon */ |
f9cfbe94 PW |
335 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN); |
336 | pDevice->bPSRxBeacon = FALSE; | |
337 | bWakeUp = TRUE; | |
c5b0b5fc | 338 | } else if (!pDevice->bPSRxBeacon) { |
7404eab2 | 339 | /* Listen until RxBeacon */ |
f9cfbe94 PW |
340 | MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN); |
341 | } | |
342 | } | |
343 | return bWakeUp; | |
92b96797 FB |
344 | } |
345 |