| /* |
| * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * |
| * File: power.c |
| * |
| * Purpose: Handles 802.11 power management functions |
| * |
| * Author: Lyndon Chen |
| * |
| * Date: July 17, 2002 |
| * |
| * Functions: |
| * PSvEnablePowerSaving - Enable Power Saving Mode |
| * PSvDiasblePowerSaving - Disable Power Saving Mode |
| * PSbConsiderPowerDown - Decide if we can Power Down |
| * PSvSendPSPOLL - Send PS-POLL packet |
| * PSbSendNullPacket - Send Null packet |
| * PSbIsNextTBTTWakeUp - Decide if we need to wake up at next Beacon |
| * |
| * Revision History: |
| * |
| */ |
| |
| #include "ttype.h" |
| #include "mac.h" |
| #include "device.h" |
| #include "wmgr.h" |
| #include "power.h" |
| #include "wcmd.h" |
| #include "rxtx.h" |
| #include "card.h" |
| |
| /*--------------------- Static Definitions -------------------------*/ |
| |
| |
| |
| |
| /*--------------------- Static Classes ----------------------------*/ |
| |
| /*--------------------- Static Variables --------------------------*/ |
| static int msglevel =MSG_LEVEL_INFO; |
| /*--------------------- Static Functions --------------------------*/ |
| |
| |
| /*--------------------- Export Variables --------------------------*/ |
| |
| |
| /*--------------------- Export Functions --------------------------*/ |
| |
| /*+ |
| * |
| * Routine Description: |
| * Enable hw power saving functions |
| * |
| * Return Value: |
| * None. |
| * |
| -*/ |
| |
| |
| void |
| PSvEnablePowerSaving( |
| void *hDeviceContext, |
| WORD wListenInterval |
| ) |
| { |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| PSMgmtObject pMgmt = pDevice->pMgmt; |
| WORD wAID = pMgmt->wCurrAID | BIT14 | BIT15; |
| |
| // set period of power up before TBTT |
| VNSvOutPortW(pDevice->PortOffset + MAC_REG_PWBT, C_PWBT); |
| if (pDevice->eOPMode != OP_MODE_ADHOC) { |
| // set AID |
| VNSvOutPortW(pDevice->PortOffset + MAC_REG_AIDATIM, wAID); |
| } else { |
| // set ATIM Window |
| MACvWriteATIMW(pDevice->PortOffset, pMgmt->wCurrATIMWindow); |
| } |
| // Set AutoSleep |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); |
| // Set HWUTSF |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF); |
| |
| if (wListenInterval >= 2) { |
| // clear always listen beacon |
| MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); |
| //pDevice->wCFG &= ~CFG_ALB; |
| // first time set listen next beacon |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN); |
| pMgmt->wCountToWakeUp = wListenInterval; |
| } |
| else { |
| // always listen beacon |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); |
| //pDevice->wCFG |= CFG_ALB; |
| pMgmt->wCountToWakeUp = 0; |
| } |
| |
| // enable power saving hw function |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PSEN); |
| pDevice->bEnablePSMode = TRUE; |
| |
| if (pDevice->eOPMode == OP_MODE_ADHOC) { |
| // bMgrPrepareBeaconToSend((void *)pDevice, pMgmt); |
| } |
| // We don't send null pkt in ad hoc mode since beacon will handle this. |
| else if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) { |
| PSbSendNullPacket(pDevice); |
| } |
| pDevice->bPWBitOn = TRUE; |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS:Power Saving Mode Enable... \n"); |
| return; |
| } |
| |
| |
| |
| |
| |
| |
| /*+ |
| * |
| * Routine Description: |
| * Disable hw power saving functions |
| * |
| * Return Value: |
| * None. |
| * |
| -*/ |
| |
| void |
| PSvDisablePowerSaving( |
| void *hDeviceContext |
| ) |
| { |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| // PSMgmtObject pMgmt = pDevice->pMgmt; |
| |
| // disable power saving hw function |
| MACbPSWakeup(pDevice->PortOffset); |
| //clear AutoSleep |
| MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP); |
| //clear HWUTSF |
| MACvRegBitsOff(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF); |
| // set always listen beacon |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN); |
| |
| pDevice->bEnablePSMode = FALSE; |
| |
| if (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) { |
| PSbSendNullPacket(pDevice); |
| } |
| pDevice->bPWBitOn = FALSE; |
| return; |
| } |
| |
| |
| /*+ |
| * |
| * Routine Description: |
| * Consider to power down when no more packets to tx or rx. |
| * |
| * Return Value: |
| * TRUE, if power down success |
| * FALSE, if fail |
| -*/ |
| |
| |
| BOOL |
| PSbConsiderPowerDown( |
| void *hDeviceContext, |
| BOOL bCheckRxDMA, |
| BOOL bCheckCountToWakeUp |
| ) |
| { |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| PSMgmtObject pMgmt = pDevice->pMgmt; |
| UINT uIdx; |
| |
| // check if already in Doze mode |
| if (MACbIsRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PS)) |
| return TRUE; |
| |
| if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { |
| // check if in TIM wake period |
| if (pMgmt->bInTIMWake) |
| return FALSE; |
| } |
| |
| // check scan state |
| if (pDevice->bCmdRunning) |
| return FALSE; |
| |
| // Froce PSEN on |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PSEN); |
| |
| // check if all TD are empty, |
| for (uIdx = 0; uIdx < TYPE_MAXTD; uIdx ++) { |
| if (pDevice->iTDUsed[uIdx] != 0) |
| return FALSE; |
| } |
| |
| // check if rx isr is clear |
| if (bCheckRxDMA && |
| ((pDevice->dwIsr& ISR_RXDMA0) != 0) && |
| ((pDevice->dwIsr & ISR_RXDMA1) != 0)){ |
| return FALSE; |
| }; |
| |
| if (pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { |
| if (bCheckCountToWakeUp && |
| (pMgmt->wCountToWakeUp == 0 || pMgmt->wCountToWakeUp == 1)) { |
| return FALSE; |
| } |
| } |
| |
| // no Tx, no Rx isr, now go to Doze |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_GO2DOZE); |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Go to Doze ZZZZZZZZZZZZZZZ\n"); |
| return TRUE; |
| } |
| |
| |
| |
| /*+ |
| * |
| * Routine Description: |
| * Send PS-POLL packet |
| * |
| * Return Value: |
| * None. |
| * |
| -*/ |
| |
| |
| |
| void |
| PSvSendPSPOLL( |
| void *hDeviceContext |
| ) |
| { |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| PSMgmtObject pMgmt = pDevice->pMgmt; |
| PSTxMgmtPacket pTxPacket = NULL; |
| |
| |
| memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_HDR_ADDR2_LEN); |
| pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; |
| pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket)); |
| pTxPacket->p80211Header->sA2.wFrameCtl = cpu_to_le16( |
| ( |
| WLAN_SET_FC_FTYPE(WLAN_TYPE_CTL) | |
| WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_PSPOLL) | |
| WLAN_SET_FC_PWRMGT(0) |
| )); |
| pTxPacket->p80211Header->sA2.wDurationID = pMgmt->wCurrAID | BIT14 | BIT15; |
| memcpy(pTxPacket->p80211Header->sA2.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); |
| memcpy(pTxPacket->p80211Header->sA2.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); |
| pTxPacket->cbMPDULen = WLAN_HDR_ADDR2_LEN; |
| pTxPacket->cbPayloadLen = 0; |
| // send the frame |
| if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet failed..\n"); |
| } |
| else { |
| // DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet success..\n"); |
| }; |
| |
| return; |
| } |
| |
| |
| |
| /*+ |
| * |
| * Routine Description: |
| * Send NULL packet to AP for notification power state of STA |
| * |
| * Return Value: |
| * None. |
| * |
| -*/ |
| BOOL |
| PSbSendNullPacket( |
| void *hDeviceContext |
| ) |
| { |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| PSTxMgmtPacket pTxPacket = NULL; |
| PSMgmtObject pMgmt = pDevice->pMgmt; |
| UINT uIdx; |
| |
| |
| if (pDevice->bLinkPass == FALSE) { |
| return FALSE; |
| } |
| #ifdef TxInSleep |
| if ((pDevice->bEnablePSMode == FALSE) && |
| (pDevice->fTxDataInSleep == FALSE)){ |
| return FALSE; |
| } |
| #else |
| if (pDevice->bEnablePSMode == FALSE) { |
| return FALSE; |
| } |
| #endif |
| if (pDevice->bEnablePSMode) { |
| for (uIdx = 0; uIdx < TYPE_MAXTD; uIdx ++) { |
| if (pDevice->iTDUsed[uIdx] != 0) |
| return FALSE; |
| } |
| } |
| |
| memset(pMgmt->pbyPSPacketPool, 0, sizeof(STxMgmtPacket) + WLAN_NULLDATA_FR_MAXLEN); |
| pTxPacket = (PSTxMgmtPacket)pMgmt->pbyPSPacketPool; |
| pTxPacket->p80211Header = (PUWLAN_80211HDR)((PBYTE)pTxPacket + sizeof(STxMgmtPacket)); |
| |
| if (pDevice->bEnablePSMode) { |
| |
| pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16( |
| ( |
| WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) | |
| WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) | |
| WLAN_SET_FC_PWRMGT(1) |
| )); |
| } |
| else { |
| pTxPacket->p80211Header->sA3.wFrameCtl = cpu_to_le16( |
| ( |
| WLAN_SET_FC_FTYPE(WLAN_TYPE_DATA) | |
| WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_NULL) | |
| WLAN_SET_FC_PWRMGT(0) |
| )); |
| } |
| |
| if(pMgmt->eCurrMode != WMAC_MODE_IBSS_STA) { |
| pTxPacket->p80211Header->sA3.wFrameCtl |= cpu_to_le16((WORD)WLAN_SET_FC_TODS(1)); |
| } |
| |
| memcpy(pTxPacket->p80211Header->sA3.abyAddr1, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN); |
| memcpy(pTxPacket->p80211Header->sA3.abyAddr2, pMgmt->abyMACAddr, WLAN_ADDR_LEN); |
| memcpy(pTxPacket->p80211Header->sA3.abyAddr3, pMgmt->abyCurrBSSID, WLAN_BSSID_LEN); |
| pTxPacket->cbMPDULen = WLAN_HDR_ADDR3_LEN; |
| pTxPacket->cbPayloadLen = 0; |
| // send the frame |
| if (csMgmt_xmit(pDevice, pTxPacket) != CMD_STATUS_PENDING) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet failed !\n"); |
| return FALSE; |
| } |
| else { |
| |
| // DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet success....\n"); |
| } |
| |
| |
| return TRUE ; |
| } |
| |
| /*+ |
| * |
| * Routine Description: |
| * Check if Next TBTT must wake up |
| * |
| * Return Value: |
| * None. |
| * |
| -*/ |
| |
| BOOL |
| PSbIsNextTBTTWakeUp( |
| void *hDeviceContext |
| ) |
| { |
| |
| PSDevice pDevice = (PSDevice)hDeviceContext; |
| PSMgmtObject pMgmt = pDevice->pMgmt; |
| BOOL bWakeUp = FALSE; |
| |
| if (pMgmt->wListenInterval >= 2) { |
| if (pMgmt->wCountToWakeUp == 0) { |
| pMgmt->wCountToWakeUp = pMgmt->wListenInterval; |
| } |
| |
| pMgmt->wCountToWakeUp --; |
| |
| if (pMgmt->wCountToWakeUp == 1) { |
| // Turn on wake up to listen next beacon |
| MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN); |
| bWakeUp = TRUE; |
| } |
| |
| } |
| |
| return bWakeUp; |
| } |
| |