int.c

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/*
 * 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: int.c
 *
 * Purpose: Handle USB interrupt endpoint
 *
 * Author: Jerry Chen
 *
 * Date: Apr. 2, 2004
 *
 * Functions:
 *
 * Revision History:
 *      04-02-2004 Jerry Chen:  Initial release
 *
 */

#include "int.h"
#include "mib.h"
#include "tmacro.h"
#include "mac.h"
#include "power.h"
#include "bssdb.h"
#include "usbpipe.h"

/*---------------------  Static Definitions -------------------------*/
static int msglevel = MSG_LEVEL_INFO; /* MSG_LEVEL_DEBUG */

/*---------------------  Static Classes  ----------------------------*/

/*---------------------  Static Variables  --------------------------*/

/*---------------------  Static Functions  --------------------------*/

/*---------------------  Export Variables  --------------------------*/

/*---------------------  Export Functions  --------------------------*/

/*+
 *
 *  Function:   InterruptPollingThread
 *
 *  Synopsis:   Thread running at IRQL PASSIVE_LEVEL.
 *
 *  Arguments: Device Extension
 *
 *  Returns:
 *
 *  Algorithm:  Call USBD for input data;
 *
 *  History:    dd-mm-yyyy   Author    Comment
 *
 *
 *  Notes:
 *
 *  USB reads are by nature 'Blocking', and when in a read, the device looks
 *  like it's in a 'stall' condition, so we deliberately time out every second
 *  if we've gotten no data
 *
-*/
void INTvWorkItem(void *Context)
{
    PSDevice pDevice = Context;
    int ntStatus;

    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Interrupt Polling Thread\n");

    spin_lock_irq(&pDevice->lock);
    if (pDevice->fKillEventPollingThread != TRUE)
        ntStatus = PIPEnsInterruptRead(pDevice);
    spin_unlock_irq(&pDevice->lock);
}

void INTnsProcessData(PSDevice pDevice)
{
    PSINTData pINTData;
    PSMgmtObject pMgmt = &(pDevice->sMgmtObj);
    struct net_device_stats *pStats = &pDevice->stats;

    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsInterruptProcessData\n");

    pINTData = (PSINTData) pDevice->intBuf.pDataBuf;
    if (pINTData->byTSR0 & TSR_VALID) {
        STAvUpdateTDStatCounter(&(pDevice->scStatistic),
                    (BYTE)(pINTData->byPkt0 & 0x0F),
                    (BYTE)(pINTData->byPkt0>>4),
                    pINTData->byTSR0);
        BSSvUpdateNodeTxCounter(pDevice,
                    &(pDevice->scStatistic),
                    pINTData->byTSR0,
                    pINTData->byPkt0);
        /*DBG_PRN_GRP01(("TSR0 %02x\n", pINTData->byTSR0));*/
    }
    if (pINTData->byTSR1 & TSR_VALID) {
        STAvUpdateTDStatCounter(&(pDevice->scStatistic),
                    (BYTE)(pINTData->byPkt1 & 0x0F),
                    (BYTE)(pINTData->byPkt1>>4),
                    pINTData->byTSR1);
        BSSvUpdateNodeTxCounter(pDevice,
                    &(pDevice->scStatistic),
                    pINTData->byTSR1,
                    pINTData->byPkt1);
        /*DBG_PRN_GRP01(("TSR1 %02x\n", pINTData->byTSR1));*/
    }
    if (pINTData->byTSR2 & TSR_VALID) {
        STAvUpdateTDStatCounter(&(pDevice->scStatistic),
                    (BYTE)(pINTData->byPkt2 & 0x0F),
                    (BYTE)(pINTData->byPkt2>>4),
                    pINTData->byTSR2);
        BSSvUpdateNodeTxCounter(pDevice,
                    &(pDevice->scStatistic),
                    pINTData->byTSR2,
                    pINTData->byPkt2);
        /*DBG_PRN_GRP01(("TSR2 %02x\n", pINTData->byTSR2));*/
    }
    if (pINTData->byTSR3 & TSR_VALID) {
        STAvUpdateTDStatCounter(&(pDevice->scStatistic),
                    (BYTE)(pINTData->byPkt3 & 0x0F),
                    (BYTE)(pINTData->byPkt3>>4),
                    pINTData->byTSR3);
        BSSvUpdateNodeTxCounter(pDevice,
                    &(pDevice->scStatistic),
                    pINTData->byTSR3,
                    pINTData->byPkt3);
        /*DBG_PRN_GRP01(("TSR3 %02x\n", pINTData->byTSR3));*/
    }
    if (pINTData->byISR0 != 0) {
        if (pINTData->byISR0 & ISR_BNTX) {
            if (pDevice->eOPMode == OP_MODE_AP) {
                if (pMgmt->byDTIMCount > 0) {
                    pMgmt->byDTIMCount--;
                    pMgmt->sNodeDBTable[0].bRxPSPoll =
                        FALSE;
                } else if (pMgmt->byDTIMCount == 0) {
                    /* check if multicast tx buffering */
                    pMgmt->byDTIMCount =
                        pMgmt->byDTIMPeriod-1;
                    pMgmt->sNodeDBTable[0].bRxPSPoll = TRUE;
                    if (pMgmt->sNodeDBTable[0].bPSEnable)
                        bScheduleCommand((void *) pDevice,
                                 WLAN_CMD_RX_PSPOLL,
                                 NULL);
                }
                bScheduleCommand((void *) pDevice,
                        WLAN_CMD_BECON_SEND,
                        NULL);
            } /* if (pDevice->eOPMode == OP_MODE_AP) */
        pDevice->bBeaconSent = TRUE;
        } else {
            pDevice->bBeaconSent = FALSE;
        }
        if (pINTData->byISR0 & ISR_TBTT) {
            if (pDevice->bEnablePSMode)
                bScheduleCommand((void *) pDevice,
                        WLAN_CMD_TBTT_WAKEUP,
                        NULL);
            if (pDevice->bChannelSwitch) {
                pDevice->byChannelSwitchCount--;
                if (pDevice->byChannelSwitchCount == 0)
                    bScheduleCommand((void *) pDevice,
                            WLAN_CMD_11H_CHSW,
                            NULL);
            }
        }
        LODWORD(pDevice->qwCurrTSF) = pINTData->dwLoTSF;
        HIDWORD(pDevice->qwCurrTSF) = pINTData->dwHiTSF;
        /*DBG_PRN_GRP01(("ISR0 = %02x ,
          LoTsf =  %08x,
          HiTsf =  %08x\n",
          pINTData->byISR0,
          pINTData->dwLoTSF,
          pINTData->dwHiTSF)); */

        STAvUpdate802_11Counter(&pDevice->s802_11Counter,
                    &pDevice->scStatistic,
                    pINTData->byRTSSuccess,
                    pINTData->byRTSFail,
                    pINTData->byACKFail,
                    pINTData->byFCSErr);
        STAvUpdateIsrStatCounter(&pDevice->scStatistic,
                    pINTData->byISR0,
                    pINTData->byISR1);
    }
    if (pINTData->byISR1 != 0)
        if (pINTData->byISR1 & ISR_GPIO3)
            bScheduleCommand((void *) pDevice,
                    WLAN_CMD_RADIO,
                    NULL);
    pDevice->intBuf.uDataLen = 0;
    pDevice->intBuf.bInUse = FALSE;

    pStats->tx_packets = pDevice->scStatistic.ullTsrOK;
    pStats->tx_bytes = pDevice->scStatistic.ullTxDirectedBytes +
        pDevice->scStatistic.ullTxMulticastBytes +
        pDevice->scStatistic.ullTxBroadcastBytes;
    pStats->tx_errors = pDevice->scStatistic.dwTsrErr;
    pStats->tx_dropped = pDevice->scStatistic.dwTsrErr;
}