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/*
*************************************************************************
* Ralink Tech Inc.
* 5F., No.36, Taiyuan St., Jhubei City,
* Hsinchu County 302,
* Taiwan, R.O.C.
*
* (c) Copyright 2002-2007, Ralink Technology, Inc.
*
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
*************************************************************************
Module Name:
ap_dfs.c
Abstract:
Support DFS function.
Revision History:
Who When What
-------- ---------- ----------------------------------------------
Fonchi 03-12-2007 created
*/
#include "../rt_config.h"
typedef struct _RADAR_DURATION_TABLE
{
ULONG RDDurRegion;
ULONG RadarSignalDuration;
ULONG Tolerance;
} RADAR_DURATION_TABLE, *PRADAR_DURATION_TABLE;
static UCHAR RdIdleTimeTable[MAX_RD_REGION][4] =
{
{9, 250, 250, 250}, // CE
{4, 250, 250, 250}, // FCC
{4, 250, 250, 250}, // JAP
{15, 250, 250, 250}, // JAP_W53
{4, 250, 250, 250} // JAP_W56
};
/*
========================================================================
Routine Description:
Bbp Radar detection routine
Arguments:
pAd Pointer to our adapter
Return Value:
========================================================================
*/
VOID BbpRadarDetectionStart(
IN PRTMP_ADAPTER pAd)
{
UINT8 RadarPeriod;
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 114, 0x02);
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 121, 0x20);
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 122, 0x00);
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 123, 0x08/*0x80*/);
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 124, 0x28);
RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 125, 0xff);
RadarPeriod = ((UINT)RdIdleTimeTable[pAd->CommonCfg.RadarDetect.RDDurRegion][0] + (UINT)pAd->CommonCfg.RadarDetect.DfsSessionTime) < 250 ?
(RdIdleTimeTable[pAd->CommonCfg.RadarDetect.RDDurRegion][0] + pAd->CommonCfg.RadarDetect.DfsSessionTime) : 250;
RTMP_IO_WRITE8(pAd, 0x7020, 0x1d);
RTMP_IO_WRITE8(pAd, 0x7021, 0x40);
RadarDetectionStart(pAd, 0, RadarPeriod);
return;
}
/*
========================================================================
Routine Description:
Bbp Radar detection routine
Arguments:
pAd Pointer to our adapter
Return Value:
========================================================================
*/
VOID BbpRadarDetectionStop(
IN PRTMP_ADAPTER pAd)
{
RTMP_IO_WRITE8(pAd, 0x7020, 0x1d);
RTMP_IO_WRITE8(pAd, 0x7021, 0x60);
RadarDetectionStop(pAd);
return;
}
/*
========================================================================
Routine Description:
Radar detection routine
Arguments:
pAd Pointer to our adapter
Return Value:
========================================================================
*/
VOID RadarDetectionStart(
IN PRTMP_ADAPTER pAd,
IN BOOLEAN CTSProtect,
IN UINT8 CTSPeriod)
{
UINT8 DfsActiveTime = (pAd->CommonCfg.RadarDetect.DfsSessionTime & 0x1f);
UINT8 CtsProtect = (CTSProtect == 1) ? 0x02 : 0x01; // CTS protect.
if (CTSProtect != 0)
{
switch(pAd->CommonCfg.RadarDetect.RDDurRegion)
{
case FCC:
case JAP_W56:
CtsProtect = 0x03;
break;
case CE:
case JAP_W53:
default:
CtsProtect = 0x02;
break;
}
}
else
CtsProtect = 0x01;
// send start-RD with CTS protection command to MCU
// highbyte [7] reserve
// highbyte [6:5] 0x: stop Carrier/Radar detection
// highbyte [10]: Start Carrier/Radar detection without CTS protection, 11: Start Carrier/Radar detection with CTS protection
// highbyte [4:0] Radar/carrier detection duration. In 1ms.
// lowbyte [7:0] Radar/carrier detection period, in 1ms.
AsicSendCommandToMcu(pAd, 0x60, 0xff, CTSPeriod, DfsActiveTime | (CtsProtect << 5));
//AsicSendCommandToMcu(pAd, 0x63, 0xff, 10, 0);
return;
}
/*
========================================================================
Routine Description:
Radar detection routine
Arguments:
pAd Pointer to our adapter
Return Value:
TRUE Found radar signal
FALSE Not found radar signal
========================================================================
*/
VOID RadarDetectionStop(
IN PRTMP_ADAPTER pAd)
{
DBGPRINT(RT_DEBUG_TRACE,("RadarDetectionStop.\n"));
AsicSendCommandToMcu(pAd, 0x60, 0xff, 0x00, 0x00); // send start-RD with CTS protection command to MCU
return;
}
/*
========================================================================
Routine Description:
Radar channel check routine
Arguments:
pAd Pointer to our adapter
Return Value:
TRUE need to do radar detect
FALSE need not to do radar detect
========================================================================
*/
BOOLEAN RadarChannelCheck(
IN PRTMP_ADAPTER pAd,
IN UCHAR Ch)
{
#if 1
INT i;
BOOLEAN result = FALSE;
for (i=0; i<pAd->ChannelListNum; i++)
{
if (Ch == pAd->ChannelList[i].Channel)
{
result = pAd->ChannelList[i].DfsReq;
break;
}
}
return result;
#else
INT i;
UCHAR Channel[15]={52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140};
for (i=0; i<15; i++)
{
if (Ch == Channel[i])
{
break;
}
}
if (i != 15)
return TRUE;
else
return FALSE;
#endif
}
ULONG JapRadarType(
IN PRTMP_ADAPTER pAd)
{
ULONG i;
const UCHAR Channel[15]={52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140};
if (pAd->CommonCfg.RadarDetect.RDDurRegion != JAP)
{
return pAd->CommonCfg.RadarDetect.RDDurRegion;
}
for (i=0; i<15; i++)
{
if (pAd->CommonCfg.Channel == Channel[i])
{
break;
}
}
if (i < 4)
return JAP_W53;
else if (i < 15)
return JAP_W56;
else
return JAP; // W52
}
ULONG RTMPBbpReadRadarDuration(
IN PRTMP_ADAPTER pAd)
{
UINT8 byteValue = 0;
ULONG result;
BBP_IO_READ8_BY_REG_ID(pAd, BBP_R115, &byteValue);
result = 0;
switch (byteValue)
{
case 1: // radar signal detected by pulse mode.
case 2: // radar signal detected by width mode.
result = RTMPReadRadarDuration(pAd);
break;
case 0: // No radar signal.
default:
result = 0;
break;
}
return result;
}
ULONG RTMPReadRadarDuration(
IN PRTMP_ADAPTER pAd)
{
ULONG result = 0;
#ifdef DFS_SUPPORT
UINT8 duration1 = 0, duration2 = 0, duration3 = 0;
BBP_IO_READ8_BY_REG_ID(pAd, BBP_R116, &duration1);
BBP_IO_READ8_BY_REG_ID(pAd, BBP_R117, &duration2);
BBP_IO_READ8_BY_REG_ID(pAd, BBP_R118, &duration3);
result = (duration1 << 16) + (duration2 << 8) + duration3;
#endif // DFS_SUPPORT //
return result;
}
VOID RTMPCleanRadarDuration(
IN PRTMP_ADAPTER pAd)
{
return;
}
/*
========================================================================
Routine Description:
Radar wave detection. The API should be invoke each second.
Arguments:
pAd - Adapter pointer
Return Value:
None
========================================================================
*/
VOID ApRadarDetectPeriodic(
IN PRTMP_ADAPTER pAd)
{
INT i;
pAd->CommonCfg.RadarDetect.InServiceMonitorCount++;
for (i=0; i<pAd->ChannelListNum; i++)
{
if (pAd->ChannelList[i].RemainingTimeForUse > 0)
{
pAd->ChannelList[i].RemainingTimeForUse --;
if ((pAd->Mlme.PeriodicRound%5) == 0)
{
DBGPRINT(RT_DEBUG_TRACE, ("RadarDetectPeriodic - ch=%d, RemainingTimeForUse=%d\n", pAd->ChannelList[i].Channel, pAd->ChannelList[i].RemainingTimeForUse));
}
}
}
//radar detect
if ((pAd->CommonCfg.Channel > 14)
&& (pAd->CommonCfg.bIEEE80211H == 1)
&& RadarChannelCheck(pAd, pAd->CommonCfg.Channel))
{
RadarDetectPeriodic(pAd);
}
return;
}
// Periodic Radar detection, switch channel will occur in RTMPHandleTBTTInterrupt()
// Before switch channel, driver needs doing channel switch announcement.
VOID RadarDetectPeriodic(
IN PRTMP_ADAPTER pAd)
{
// need to check channel availability, after switch channel
if (pAd->CommonCfg.RadarDetect.RDMode != RD_SILENCE_MODE)
return;
// channel availability check time is 60sec, use 65 for assurance
if (pAd->CommonCfg.RadarDetect.RDCount++ > pAd->CommonCfg.RadarDetect.ChMovingTime)
{
DBGPRINT(RT_DEBUG_TRACE, ("Not found radar signal, start send beacon and radar detection in service monitor\n\n"));
BbpRadarDetectionStop(pAd);
AsicEnableBssSync(pAd);
pAd->CommonCfg.RadarDetect.RDMode = RD_NORMAL_MODE;
return;
}
return;
}
/*
==========================================================================
Description:
change channel moving time for DFS testing.
Arguments:
pAdapter Pointer to our adapter
wrq Pointer to the ioctl argument
Return Value:
None
Note:
Usage:
1.) iwpriv ra0 set ChMovTime=[value]
==========================================================================
*/
INT Set_ChMovingTime_Proc(
IN PRTMP_ADAPTER pAd,
IN PUCHAR arg)
{
UINT8 Value;
Value = simple_strtol(arg, 0, 10);
pAd->CommonCfg.RadarDetect.ChMovingTime = Value;
DBGPRINT(RT_DEBUG_TRACE, ("%s:: %d\n", __func__,
pAd->CommonCfg.RadarDetect.ChMovingTime));
return TRUE;
}
INT Set_LongPulseRadarTh_Proc(
IN PRTMP_ADAPTER pAd,
IN PUCHAR arg)
{
UINT8 Value;
Value = simple_strtol(arg, 0, 10) > 10 ? 10 : simple_strtol(arg, 0, 10);
pAd->CommonCfg.RadarDetect.LongPulseRadarTh = Value;
DBGPRINT(RT_DEBUG_TRACE, ("%s:: %d\n", __func__,
pAd->CommonCfg.RadarDetect.LongPulseRadarTh));
return TRUE;
}
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