1 files changed, 441 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/power.c b/drivers/staging/vt6655/power.c
new file mode 100644
index 000000000000..edd8336712a2
--- /dev/null
+++ b/drivers/staging/vt6655/power.c
@@ -0,0 +1,441 @@
+/*
+ * 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 managment  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:
+ *
+ */
+
+
+
+#if !defined(__TTYPE_H__)
+#include "ttype.h"
+#endif
+#if !defined(__TBIT_H__)
+#include "tbit.h"
+#endif
+#if !defined(__MAC_H__)
+#include "mac.h"
+#endif
+#if !defined(__DEVICE_H__)
+#include "device.h"
+#endif
+#if !defined(__WMGR_H__)
+#include "wmgr.h"
+#endif
+#if !defined(__POWER_H__)
+#include "power.h"
+#endif
+#if !defined(__WCMD_H__)
+#include "wcmd.h"
+#endif
+#if !defined(__TBIT_H__)
+#include "tbit.h"
+#endif
+#if !defined(__UMEM_H__)
+#include "umem.h"
+#endif
+#if !defined(__RXTX_H__)
+#include "rxtx.h"
+#endif
+#if !defined(__CARD_H__)
+#include "card.h"
+#endif
+
+
+
+
+/*---------------------  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(
+    IN HANDLE hDeviceContext,
+    IN 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((HANDLE)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;
+    DEVICE_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(
+    IN HANDLE 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(
+    IN HANDLE hDeviceContext,
+    IN BOOL bCheckRxDMA,
+    IN 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);
+    DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Go to Doze ZZZZZZZZZZZZZZZ\n");
+    return TRUE;
+}
+
+
+
+/*+
+ *
+ * Routine Description:
+ * Send PS-POLL packet
+ *
+ * Return Value:
+ *    None.
+ *
+-*/
+
+
+
+VOID
+PSvSendPSPOLL(
+    IN HANDLE 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) {
+        DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send PS-Poll packet failed..\n");
+    }
+    else {
+//        DEVICE_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(
+    IN HANDLE 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) {
+        DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Send Null Packet failed !\n");
+        return FALSE;
+    }
+    else {
+
+//            DEVICE_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(
+    IN HANDLE 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;
+}
+