release/src-rt-6.x.4708/linux/linux-2.6.36/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 Definitions -------------------------*/
  44 /* static int msglevel = MSG_LEVEL_DEBUG; */
  45 static int msglevel = MSG_LEVEL_INFO;
  46
  47
  48 /*---------------------  Static Classes  ----------------------------*/
  49
  50 /*---------------------  Static Variables  --------------------------*/
  51
  52 /*---------------------  Static Functions  --------------------------*/
  53
  54 /*---------------------  Export Variables  --------------------------*/
  55
  56
  57 /*---------------------  Export Functions  --------------------------*/
  58
  59
  60 /*+
  61  *
  62  *  Function:   InterruptPollingThread
  63  *
  64  *  Synopsis:   Thread running at IRQL PASSIVE_LEVEL.
  65  *
  66  *  Arguments: Device Extension
  67  *
  68  *  Returns:
  69  *
  70  *  Algorithm:  Call USBD for input data;
  71  *
  72  *  History:    dd-mm-yyyy   Author    Comment
  73  *
  74  *
  75  *  Notes:
  76  *
  77  *  USB reads are by nature 'Blocking', and when in a read, the device looks
  78  *  like it's in a 'stall' condition, so we deliberately time out every second
  79  *  if we've gotten no data
  80  *
  81 -*/
  82 void INTvWorkItem(void *Context)
  83 {
  84         PSDevice pDevice = (PSDevice) Context;
  85         int ntStatus;
  86
  87         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Interrupt Polling Thread\n");
  88
  89         spin_lock_irq(&pDevice->lock);
  90         if (pDevice->fKillEventPollingThread != TRUE)
  91                 ntStatus = PIPEnsInterruptRead(pDevice);
  92         spin_unlock_irq(&pDevice->lock);
  93 }
  94
  95 int INTnsProcessData(PSDevice pDevice)
  96 {
  97         int status = STATUS_SUCCESS;
  98         PSINTData       pINTData;
  99         PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 100         struct net_device_stats *pStats = &pDevice->stats;
 101
 102         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsInterruptProcessData\n");
 103
 104         pINTData = (PSINTData) pDevice->intBuf.pDataBuf;
 105         if (pINTData->byTSR0 & TSR_VALID) {
 106                 STAvUpdateTDStatCounter(&(pDevice->scStatistic),
 107                                         (BYTE) (pINTData->byPkt0 & 0x0F),
 108                                         (BYTE) (pINTData->byPkt0>>4),
 109                                         pINTData->byTSR0);
 110                 BSSvUpdateNodeTxCounter(pDevice,
 111                                         &(pDevice->scStatistic),
 112                                         pINTData->byTSR0,
 113                                         pINTData->byPkt0);
 114                 /*DBG_PRN_GRP01(("TSR0 %02x\n", pINTData->byTSR0));*/
 115         }
 116         if (pINTData->byTSR1 & TSR_VALID) {
 117                 STAvUpdateTDStatCounter(&(pDevice->scStatistic),
 118                                         (BYTE) (pINTData->byPkt1 & 0x0F),
 119                                         (BYTE) (pINTData->byPkt1>>4),
 120                                         pINTData->byTSR1);
 121                 BSSvUpdateNodeTxCounter(pDevice,
 122                                         &(pDevice->scStatistic),
 123                                         pINTData->byTSR1,
 124                                         pINTData->byPkt1);
 125                 /*DBG_PRN_GRP01(("TSR1 %02x\n", pINTData->byTSR1));*/
 126         }
 127         if (pINTData->byTSR2 & TSR_VALID) {
 128                 STAvUpdateTDStatCounter(&(pDevice->scStatistic),
 129                                         (BYTE) (pINTData->byPkt2 & 0x0F),
 130                                         (BYTE) (pINTData->byPkt2>>4),
 131                                         pINTData->byTSR2);
 132                 BSSvUpdateNodeTxCounter(pDevice,
 133                                         &(pDevice->scStatistic),
 134                                         pINTData->byTSR2,
 135                                         pINTData->byPkt2);
 136                 /*DBG_PRN_GRP01(("TSR2 %02x\n", pINTData->byTSR2));*/
 137         }
 138         if (pINTData->byTSR3 & TSR_VALID) {
 139                 STAvUpdateTDStatCounter(&(pDevice->scStatistic),
 140                                         (BYTE) (pINTData->byPkt3 & 0x0F),
 141                                         (BYTE) (pINTData->byPkt3>>4),
 142                                         pINTData->byTSR3);
 143                 BSSvUpdateNodeTxCounter(pDevice,
 144                                         &(pDevice->scStatistic),
 145                                         pINTData->byTSR3,
 146                                         pINTData->byPkt3);
 147                 /*DBG_PRN_GRP01(("TSR3 %02x\n", pINTData->byTSR3));*/
 148         }
 149         if (pINTData->byISR0 != 0) {
 150                 if (pINTData->byISR0 & ISR_BNTX) {
 151                         if (pDevice->eOPMode == OP_MODE_AP) {
 152                                 if (pMgmt->byDTIMCount > 0) {
 153                                         pMgmt->byDTIMCount--;
 154                                         pMgmt->sNodeDBTable[0].bRxPSPoll =
 155                                                 FALSE;
 156                                 } else if (pMgmt->byDTIMCount == 0) {
 157                                         /* check if mutltcast tx bufferring */
 158                                         pMgmt->byDTIMCount =
 159                                                 pMgmt->byDTIMPeriod-1;
 160                                         pMgmt->sNodeDBTable[0].bRxPSPoll = TRUE;
 161                                         if (pMgmt->sNodeDBTable[0].bPSEnable)
 162                                                 bScheduleCommand((void *) pDevice,
 163                                                                  WLAN_CMD_RX_PSPOLL,
 164                                                                  NULL);
 165                                 }
 166                                 bScheduleCommand((void *) pDevice,
 167                                                 WLAN_CMD_BECON_SEND,
 168                                                 NULL);
 169                         } /* if (pDevice->eOPMode == OP_MODE_AP) */
 170                 pDevice->bBeaconSent = TRUE;
 171                 } else {
 172                         pDevice->bBeaconSent = FALSE;
 173                 }
 174                 if (pINTData->byISR0 & ISR_TBTT) {
 175                         if (pDevice->bEnablePSMode)
 176                                 bScheduleCommand((void *) pDevice,
 177                                                 WLAN_CMD_TBTT_WAKEUP,
 178                                                 NULL);
 179                         if (pDevice->bChannelSwitch) {
 180                                 pDevice->byChannelSwitchCount--;
 181                                 if (pDevice->byChannelSwitchCount == 0)
 182                                         bScheduleCommand((void *) pDevice,
 183                                                         WLAN_CMD_11H_CHSW,
 184                                                         NULL);
 185                         }
 186                 }
 187                 LODWORD(pDevice->qwCurrTSF) = pINTData->dwLoTSF;
 188                 HIDWORD(pDevice->qwCurrTSF) = pINTData->dwHiTSF;
 189                 /*DBG_PRN_GRP01(("ISR0 = %02x ,
 190                                 LoTsf =  %08x,
 191                                 HiTsf =  %08x\n",
 192                                 pINTData->byISR0,
 193                                 pINTData->dwLoTSF,
 194                                 pINTData->dwHiTSF)); */
 195
 196                 STAvUpdate802_11Counter(&pDevice->s802_11Counter,
 197                                         &pDevice->scStatistic,
 198                                         pINTData->byRTSSuccess,
 199                                         pINTData->byRTSFail,
 200                                         pINTData->byACKFail,
 201                                         pINTData->byFCSErr);
 202                 STAvUpdateIsrStatCounter(&pDevice->scStatistic,
 203                                         pINTData->byISR0,
 204                                         pINTData->byISR1);
 205         }
 206
 207         if (pINTData->byISR1 != 0)
 208                 if (pINTData->byISR1 & ISR_GPIO3)
 209                         bScheduleCommand((void *) pDevice,
 210                                         WLAN_CMD_RADIO,
 211                                         NULL);
 212         pDevice->intBuf.uDataLen = 0;
 213         pDevice->intBuf.bInUse = FALSE;
 214
 215         pStats->tx_packets = pDevice->scStatistic.ullTsrOK;
 216         pStats->tx_bytes = pDevice->scStatistic.ullTxDirectedBytes +
 217                         pDevice->scStatistic.ullTxMulticastBytes +
 218                         pDevice->scStatistic.ullTxBroadcastBytes;
 219         pStats->tx_errors = pDevice->scStatistic.dwTsrErr;
 220         pStats->tx_dropped = pDevice->scStatistic.dwTsrErr;
 221
 222         return status;
 223 }