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