425 lines
11 KiB
C
425 lines
11 KiB
C
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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* File: power.c
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*
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* Purpose: Handles 802.11 power managment functions
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*
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* Author: Lyndon Chen
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*
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* Date: July 17, 2002
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*
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* Functions:
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* PSvEnablePowerSaving - Enable Power Saving Mode
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* PSvDiasblePowerSaving - Disable Power Saving Mode
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* PSbConsiderPowerDown - Decide if we can Power Down
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* PSvSendPSPOLL - Send PS-POLL packet
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* PSbSendNullPacket - Send Null packet
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* PSbIsNextTBTTWakeUp - Decide if we need to wake up at next Beacon
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*
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* Revision History:
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*
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*/
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#include "ttype.h"
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#include "mac.h"
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#include "device.h"
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#include "wmgr.h"
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#include "power.h"
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#include "wcmd.h"
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#include "rxtx.h"
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#include "card.h"
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#include "control.h"
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#include "rndis.h"
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/*--------------------- Static Definitions -------------------------*/
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/*--------------------- Static Classes ----------------------------*/
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/*--------------------- Static Variables --------------------------*/
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static int msglevel =MSG_LEVEL_INFO;
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/*--------------------- Static Functions --------------------------*/
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/*--------------------- Export Variables --------------------------*/
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/*--------------------- Export Functions --------------------------*/
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/*+
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*
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* Routine Description:
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* Enable hw power saving functions
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*
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* Return Value:
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* None.
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*
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-*/
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VOID
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PSvEnablePowerSaving(
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IN HANDLE hDeviceContext,
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IN WORD wListenInterval
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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WORD wAID = pMgmt->wCurrAID | BIT14 | BIT15;
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// set period of power up before TBTT
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MACvWriteWord(pDevice, MAC_REG_PWBT, C_PWBT);
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if (pDevice->eOPMode != OP_MODE_ADHOC) {
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// set AID
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MACvWriteWord(pDevice, MAC_REG_AIDATIM, wAID);
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} else {
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// set ATIM Window
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//MACvWriteATIMW(pDevice->PortOffset, pMgmt->wCurrATIMWindow);
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}
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//Warren:06-18-2004,the sequence must follow PSEN->AUTOSLEEP->GO2DOZE
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// enable power saving hw function
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_PSEN);
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// Set AutoSleep
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MACvRegBitsOn(pDevice, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);
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//Warren:MUST turn on this once before turn on AUTOSLEEP ,or the AUTOSLEEP doesn't work
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_GO2DOZE);
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if (wListenInterval >= 2) {
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// clear always listen beacon
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MACvRegBitsOff(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN);
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// first time set listen next beacon
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN);
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pMgmt->wCountToWakeUp = wListenInterval;
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}
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else {
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// always listen beacon
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN);
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pMgmt->wCountToWakeUp = 0;
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}
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pDevice->bEnablePSMode = TRUE;
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if (pDevice->eOPMode == OP_MODE_ADHOC) {
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// bMgrPrepareBeaconToSend((HANDLE)pDevice, pMgmt);
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}
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// We don't send null pkt in ad hoc mode since beacon will handle this.
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else if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) {
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PSbSendNullPacket(pDevice);
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}
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pDevice->bPWBitOn = TRUE;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS:Power Saving Mode Enable... \n");
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return;
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}
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/*+
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*
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* Routine Description:
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* Disable hw power saving functions
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*
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* Return Value:
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* None.
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*
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-*/
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VOID
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PSvDisablePowerSaving(
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IN HANDLE hDeviceContext
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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// PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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// disable power saving hw function
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CONTROLnsRequestOut(pDevice,
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MESSAGE_TYPE_DISABLE_PS,
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0,
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0,
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0,
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NULL
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);
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//clear AutoSleep
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MACvRegBitsOff(pDevice, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);
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// set always listen beacon
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_ALBCN);
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pDevice->bEnablePSMode = FALSE;
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if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) {
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PSbSendNullPacket(pDevice);
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}
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pDevice->bPWBitOn = FALSE;
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return;
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}
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/*+
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*
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* Routine Description:
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* Consider to power down when no more packets to tx or rx.
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*
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* Return Value:
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* TRUE, if power down success
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* FALSE, if fail
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-*/
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BOOL
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PSbConsiderPowerDown(
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IN HANDLE hDeviceContext,
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IN BOOL bCheckRxDMA,
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IN BOOL bCheckCountToWakeUp
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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BYTE byData;
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// check if already in Doze mode
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ControlvReadByte(pDevice, MESSAGE_REQUEST_MACREG, MAC_REG_PSCTL, &byData);
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if ( (byData & PSCTL_PS) != 0 )
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return TRUE;;
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if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) {
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// check if in TIM wake period
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if (pMgmt->bInTIMWake)
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return FALSE;
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}
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// check scan state
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if (pDevice->bCmdRunning)
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return FALSE;
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//Tx Burst
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if ( pDevice->bPSModeTxBurst )
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return FALSE;
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// Froce PSEN on
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_PSEN);
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if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) {
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if (bCheckCountToWakeUp &&
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(pMgmt->wCountToWakeUp == 0 || pMgmt->wCountToWakeUp == 1)) {
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return FALSE;
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}
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}
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pDevice->bPSRxBeacon = TRUE;
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// no Tx, no Rx isr, now go to Doze
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_GO2DOZE);
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Go to Doze ZZZZZZZZZZZZZZZ\n");
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return TRUE;
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}
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/*+
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*
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* Routine Description:
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* Send PS-POLL packet
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*
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* Return Value:
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* None.
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*
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-*/
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VOID
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PSvSendPSPOLL(
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IN HANDLE hDeviceContext
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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PSTxMgmtPacket pTxPacket = NULL;
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memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_HDR_ADDR2_LEN);
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pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool;
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pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket));
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pTxPacket->p80211Header->sA2.wFrameCtl = cpu_to_le16(
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(
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WLAN_SET_FC_FTYPE(WLAN_TYPE_CTL) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_PSPOLL) |
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WLAN_SET_FC_PWRMGT(0)
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));
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pTxPacket->p80211Header->sA2.wDurationID = pMgmt->wCurrAID | BIT14 | BIT15;
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memcpy(pTxPacket->p80211Header->sA2.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN);
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memcpy(pTxPacket->p80211Header->sA2.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN);
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pTxPacket->cbMPDULen = WLAN_HDR_ADDR2_LEN;
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pTxPacket->cbPayloadLen = 0;
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// send the frame
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if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) {
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet failed..\n");
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}
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else {
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// DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet success..\n");
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};
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return;
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}
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/*+
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*
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* Routine Description:
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* Send NULL packet to AP for notification power state of STA
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*
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* Return Value:
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* None.
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*
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-*/
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BOOL
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PSbSendNullPacket(
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IN HANDLE hDeviceContext
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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PSTxMgmtPacket pTxPacket = NULL;
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PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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if (pDevice->bLinkPass == FALSE) {
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return FALSE;
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}
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//2007-0115-03<Add>by MikeLiu
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#ifdef TxInSleep
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if ((pDevice->bEnablePSMode == FALSE) &&
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(pDevice->fTxDataInSleep == FALSE)){
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return FALSE;
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}
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#else
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if (pDevice->bEnablePSMode == FALSE) {
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return FALSE;
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}
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#endif
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memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_NULLDATA_FR_MAXLEN);
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pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool;
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pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket));
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if (pDevice->bEnablePSMode) {
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pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16(
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(
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WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) |
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WLAN_SET_FC_PWRMGT(1)
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));
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}
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else {
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pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16(
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(
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WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) |
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WLAN_SET_FC_PWRMGT(0)
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));
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}
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if(pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) {
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pTxPacket->p80211Header->sA3.wFrameCtl |= cpu_to_le16((WORD)WLAN_SET_FC_TODS(1));
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}
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memcpy(pTxPacket->p80211Header->sA3.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN);
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memcpy(pTxPacket->p80211Header->sA3.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN);
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memcpy(pTxPacket->p80211Header->sA3.abyAddr3, pMgmt->abyCurrBSSID, WLAN_BSSID_LEN);
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pTxPacket->cbMPDULen = WLAN_HDR_ADDR3_LEN;
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pTxPacket->cbPayloadLen = 0;
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// send the frame
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if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) {
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet failed !\n");
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return FALSE;
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}
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else {
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// DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet success....\n");
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}
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return TRUE ;
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}
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/*+
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*
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* Routine Description:
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* Check if Next TBTT must wake up
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*
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* Return Value:
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* None.
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*
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-*/
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BOOL
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PSbIsNextTBTTWakeUp(
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IN HANDLE hDeviceContext
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)
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{
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PSDevice pDevice = (PSDevice)hDeviceContext;
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PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
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BOOL bWakeUp = FALSE;
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if (pMgmt->wListenInterval >= 2) {
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if (pMgmt->wCountToWakeUp == 0) {
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pMgmt->wCountToWakeUp = pMgmt->wListenInterval;
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}
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pMgmt->wCountToWakeUp --;
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if (pMgmt->wCountToWakeUp == 1) {
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// Turn on wake up to listen next beacon
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN);
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pDevice->bPSRxBeacon = FALSE;
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bWakeUp = TRUE;
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} else if ( !pDevice->bPSRxBeacon ) {
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//Listen until RxBeacon
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MACvRegBitsOn(pDevice, MAC_REG_PSCTL, PSCTL_LNBCN);
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}
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}
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return bWakeUp;
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}
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