Pileus Git - ~andy/linux/blob - drivers/staging/vt6656/int.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  *
  20  * File: int.c
  21  *
  22  * Purpose: Handle USB interrupt endpoint
  23  *
  24  * Author: Jerry Chen
  25  *
  26  * Date: Apr. 2, 2004
  27  *
  28  * Functions:
  29  *
  30  * Revision History:
  31  *      04-02-2004 Jerry Chen:  Initial release
  32  *
  33  */
  34
  35 #include "int.h"
  36 #include "mib.h"
  37 #include "tmacro.h"
  38 #include "mac.h"
  39 #include "power.h"
  40 #include "bssdb.h"
  41 #include "usbpipe.h"
  42
  43 static int msglevel = MSG_LEVEL_INFO; /* MSG_LEVEL_DEBUG */
  44
  45 /*+
  46  *
  47  *  Function:   InterruptPollingThread
  48  *
  49  *  Synopsis:   Thread running at IRQL PASSIVE_LEVEL.
  50  *
  51  *  Arguments: Device Extension
  52  *
  53  *  Returns:
  54  *
  55  *  Algorithm:  Call USBD for input data;
  56  *
  57  *  History:    dd-mm-yyyy   Author    Comment
  58  *
  59  *
  60  *  Notes:
  61  *
  62  *  USB reads are by nature 'Blocking', and when in a read, the device looks
  63  *  like it's in a 'stall' condition, so we deliberately time out every second
  64  *  if we've gotten no data
  65  *
  66 -*/
  67 void INTvWorkItem(struct vnt_private *pDevice)
  68 {
  69         int ntStatus;
  70
  71         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Interrupt Polling Thread\n");
  72
  73         spin_lock_irq(&pDevice->lock);
  74         if (pDevice->fKillEventPollingThread != true)
  75                 ntStatus = PIPEnsInterruptRead(pDevice);
  76         spin_unlock_irq(&pDevice->lock);
  77 }
  78
  79 void INTnsProcessData(struct vnt_private *pDevice)
  80 {
  81         PSINTData pINTData;
  82         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
  83         struct net_device_stats *pStats = &pDevice->stats;
  84
  85         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsInterruptProcessData\n");
  86
  87         pINTData = (PSINTData) pDevice->intBuf.pDataBuf;
  88         if (pINTData->byTSR0 & TSR_VALID) {
  89                 if (pINTData->byTSR0 & (TSR_TMO | TSR_RETRYTMO))
  90                         pDevice->wstats.discard.retries++;
  91                 else
  92                         pStats->tx_packets++;
  93
  94                 BSSvUpdateNodeTxCounter(pDevice,
  95                                         &(pDevice->scStatistic),
  96                                         pINTData->byTSR0,
  97                                         pINTData->byPkt0);
  98                 /*DBG_PRN_GRP01(("TSR0 %02x\n", pINTData->byTSR0));*/
  99         }
 100         if (pINTData->byTSR1 & TSR_VALID) {
 101                 if (pINTData->byTSR1 & (TSR_TMO | TSR_RETRYTMO))
 102                         pDevice->wstats.discard.retries++;
 103                 else
 104                         pStats->tx_packets++;
 105
 106
 107                 BSSvUpdateNodeTxCounter(pDevice,
 108                                         &(pDevice->scStatistic),
 109                                         pINTData->byTSR1,
 110                                         pINTData->byPkt1);
 111                 /*DBG_PRN_GRP01(("TSR1 %02x\n", pINTData->byTSR1));*/
 112         }
 113         if (pINTData->byTSR2 & TSR_VALID) {
 114                 if (pINTData->byTSR2 & (TSR_TMO | TSR_RETRYTMO))
 115                         pDevice->wstats.discard.retries++;
 116                 else
 117                         pStats->tx_packets++;
 118
 119                 BSSvUpdateNodeTxCounter(pDevice,
 120                                         &(pDevice->scStatistic),
 121                                         pINTData->byTSR2,
 122                                         pINTData->byPkt2);
 123                 /*DBG_PRN_GRP01(("TSR2 %02x\n", pINTData->byTSR2));*/
 124         }
 125         if (pINTData->byTSR3 & TSR_VALID) {
 126                 if (pINTData->byTSR3 & (TSR_TMO | TSR_RETRYTMO))
 127                         pDevice->wstats.discard.retries++;
 128                 else
 129                         pStats->tx_packets++;
 130
 131                 BSSvUpdateNodeTxCounter(pDevice,
 132                                         &(pDevice->scStatistic),
 133                                         pINTData->byTSR3,
 134                                         pINTData->byPkt3);
 135                 /*DBG_PRN_GRP01(("TSR3 %02x\n", pINTData->byTSR3));*/
 136         }
 137         if (pINTData->byISR0 != 0) {
 138                 if (pINTData->byISR0 & ISR_BNTX) {
 139                         if (pDevice->eOPMode == OP_MODE_AP) {
 140                                 if (pMgmt->byDTIMCount > 0) {
 141                                         pMgmt->byDTIMCount--;
 142                                         pMgmt->sNodeDBTable[0].bRxPSPoll =
 143                                                 false;
 144                                 } else if (pMgmt->byDTIMCount == 0) {
 145                                         /* check if multicast tx buffering */
 146                                         pMgmt->byDTIMCount =
 147                                                 pMgmt->byDTIMPeriod-1;
 148                                         pMgmt->sNodeDBTable[0].bRxPSPoll = true;
 149                                         if (pMgmt->sNodeDBTable[0].bPSEnable)
 150                                                 bScheduleCommand((void *) pDevice,
 151                                                                  WLAN_CMD_RX_PSPOLL,
 152                                                                  NULL);
 153                                 }
 154                                 bScheduleCommand((void *) pDevice,
 155                                                 WLAN_CMD_BECON_SEND,
 156                                                 NULL);
 157                         } /* if (pDevice->eOPMode == OP_MODE_AP) */
 158                 pDevice->bBeaconSent = true;
 159                 } else {
 160                         pDevice->bBeaconSent = false;
 161                 }
 162                 if (pINTData->byISR0 & ISR_TBTT) {
 163                         if (pDevice->bEnablePSMode)
 164                                 bScheduleCommand((void *) pDevice,
 165                                                 WLAN_CMD_TBTT_WAKEUP,
 166                                                 NULL);
 167                         if (pDevice->bChannelSwitch) {
 168                                 pDevice->byChannelSwitchCount--;
 169                                 if (pDevice->byChannelSwitchCount == 0)
 170                                         bScheduleCommand((void *) pDevice,
 171                                                         WLAN_CMD_11H_CHSW,
 172                                                         NULL);
 173                         }
 174                 }
 175                 pDevice->qwCurrTSF = cpu_to_le64(pINTData->qwTSF);
 176                 /*DBG_PRN_GRP01(("ISR0 = %02x ,
 177                   LoTsf =  %08x,
 178                   HiTsf =  %08x\n",
 179                   pINTData->byISR0,
 180                   pINTData->dwLoTSF,
 181                   pINTData->dwHiTSF)); */
 182
 183                 STAvUpdate802_11Counter(&pDevice->s802_11Counter,
 184                                         &pDevice->scStatistic,
 185                                         pINTData->byRTSSuccess,
 186                                         pINTData->byRTSFail,
 187                                         pINTData->byACKFail,
 188                                         pINTData->byFCSErr);
 189                 STAvUpdateIsrStatCounter(&pDevice->scStatistic,
 190                                         pINTData->byISR0,
 191                                         pINTData->byISR1);
 192         }
 193         if (pINTData->byISR1 != 0)
 194                 if (pINTData->byISR1 & ISR_GPIO3)
 195                         bScheduleCommand((void *) pDevice,
 196                                         WLAN_CMD_RADIO,
 197                                         NULL);
 198         pDevice->intBuf.uDataLen = 0;
 199         pDevice->intBuf.bInUse = false;
 200
 201         pStats->tx_errors = pDevice->wstats.discard.retries;
 202         pStats->tx_dropped = pDevice->wstats.discard.retries;
 203 }