8c81161615
When switching to power saving mode we only need to notify the receiver when in infrastructure mode. Signed-off-by: Philip Worrall <philip.worrall@googlemail.com> Reviewed-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
346 lines
9.0 KiB
C
346 lines
9.0 KiB
C
/*
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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 management 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 PSvEnablePowerSaving(void *hDeviceContext,
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WORD wListenInterval)
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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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} 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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/* We don't send null pkt in ad hoc mode since beacon will handle this. */
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if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE)
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PSbSendNullPacket(pDevice);
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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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}
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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 PSvDisablePowerSaving(void *hDeviceContext)
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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, MESSAGE_TYPE_DISABLE_PS, 0,
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0, 0, NULL);
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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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pDevice->bPWBitOn = FALSE;
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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 PSbConsiderPowerDown(void *hDeviceContext,
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BOOL bCheckRxDMA,
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BOOL bCheckCountToWakeUp)
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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,
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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 && (pMgmt->wCountToWakeUp == 0
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|| 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 PSvSendPSPOLL(void *hDeviceContext)
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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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/* log failure if sending failed */
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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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}
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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 PSbSendNullPacket(void *hDeviceContext)
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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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u16 flags = 0;
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if (pDevice->bLinkPass == FALSE)
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return FALSE;
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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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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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flags = WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL);
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if (pDevice->bEnablePSMode)
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flags |= WLAN_SET_FC_PWRMGT(1);
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else
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flags |= WLAN_SET_FC_PWRMGT(0);
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pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16(flags);
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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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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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/* log error if sending failed */
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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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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 PSbIsNextTBTTWakeUp(void *hDeviceContext)
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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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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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