--- /dev/null
+/*
+ *************************************************************************
+ * 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", __FUNCTION__,
+ 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", __FUNCTION__,
+ pAd->CommonCfg.RadarDetect.LongPulseRadarTh));
+
+ return TRUE;
+}
+
+
projects / linux-2.6-omap-h63xx.git / blobdiff