int dfs_process_radarevent(struct ath_softc *sc, HAL_CHANNEL *chan) { struct ath_dfs *dfs=sc->sc_dfs; struct ath_hal *ah=sc->sc_ah; struct dfs_event re,*event; struct dfs_state *rs=NULL; struct dfs_filtertype *ft; struct dfs_filter *rf; int found, retval = 0, p, empty; int events_processed = 0; u_int32_t tabledepth, rfilt, index; u_int64_t deltafull_ts = 0, this_ts, deltaT; HAL_CHANNEL *thischan; HAL_PHYERR_PARAM pe; struct dfs_pulseline *pl; static u_int32_t test_ts = 0; static u_int32_t diff_ts = 0; int ext_chan_event_flag = 0; if (dfs == NULL) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: sc_sfs is NULL\n", __func__); return 0; } pl = dfs->pulses; if ( ! (sc->sc_curchan.priv_flags & CHANNEL_DFS)) { DFS_DPRINTK(sc, ATH_DEBUG_DFS2, "%s: radar event on non-DFS chan\n", __func__); dfs_reset_radarq(sc); dfs_reset_alldelaylines(sc); return 0; } #ifndef ATH_DFS_RADAR_DETECTION_ONLY /* TEST : Simulate radar bang, make sure we add the channel to NOL (bug 29968) */ if (dfs->dfs_bangradar) { /* bangradar will always simulate radar found on the primary channel */ rs = &dfs->dfs_radar[dfs->dfs_curchan_radindex]; dfs->dfs_bangradar = 0; /* reset */ DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: bangradar\n", __func__); retval = 1; goto dfsfound; } #endif ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); while ((!empty) && (!retval) && (events_processed < MAX_EVENTS)) { ATH_DFSQ_LOCK(dfs); event = STAILQ_FIRST(&(dfs->dfs_radarq)); if (event != NULL) STAILQ_REMOVE_HEAD(&(dfs->dfs_radarq), re_list); ATH_DFSQ_UNLOCK(dfs); if (event == NULL) { empty = 1; break; } events_processed++; re = *event; OS_MEMZERO(event, sizeof(struct dfs_event)); ATH_DFSEVENTQ_LOCK(dfs); STAILQ_INSERT_TAIL(&(dfs->dfs_eventq), event, re_list); ATH_DFSEVENTQ_UNLOCK(dfs); found = 0; if (re.re_chanindex < DFS_NUM_RADAR_STATES) rs = &dfs->dfs_radar[re.re_chanindex]; else { ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); continue; } if (rs->rs_chan.priv_flags & CHANNEL_INTERFERENCE) { ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); continue; } if (dfs->dfs_rinfo.rn_lastfull_ts == 0) { /* * Either not started, or 64-bit rollover exactly to zero * Just prepend zeros to the 15-bit ts */ dfs->dfs_rinfo.rn_ts_prefix = 0; this_ts = (u_int64_t) re.re_ts; } else { /* WAR 23031- patch duplicate ts on very short pulses */ /* This pacth has two problems in linux environment. * 1)The time stamp created and hence PRI depends entirely on the latency. * If the latency is high, it possibly can split two consecutive * pulses in the same burst so far away (the same amount of latency) * that make them look like they are from differenct bursts. It is * observed to happen too often. It sure makes the detection fail. * 2)Even if the latency is not that bad, it simply shifts the duplicate * timestamps to a new duplicate timestamp based on how they are processed. * This is not worse but not good either. * * Take this pulse as a good one and create a probable PRI later */ if (re.re_dur == 0 && re.re_ts == dfs->dfs_rinfo.rn_last_unique_ts) { debug_dup[debug_dup_cnt++] = '1'; DFS_DPRINTK(sc, ATH_DEBUG_DFS1, "\n %s deltaT is 0 \n", __func__); } else { dfs->dfs_rinfo.rn_last_unique_ts = re.re_ts; debug_dup[debug_dup_cnt++] = '0'; } if (debug_dup_cnt >= 32){ debug_dup_cnt = 0; } if (re.re_ts <= dfs->dfs_rinfo.rn_last_ts) { dfs->dfs_rinfo.rn_ts_prefix += (((u_int64_t) 1) << DFS_TSSHIFT); /* Now, see if it's been more than 1 wrap */ deltafull_ts = re.re_full_ts - dfs->dfs_rinfo.rn_lastfull_ts; if (deltafull_ts > ((u_int64_t)((DFS_TSMASK - dfs->dfs_rinfo.rn_last_ts) + 1 + re.re_ts))) deltafull_ts -= (DFS_TSMASK - dfs->dfs_rinfo.rn_last_ts) + 1 + re.re_ts; deltafull_ts = deltafull_ts >> DFS_TSSHIFT; if (deltafull_ts > 1) { dfs->dfs_rinfo.rn_ts_prefix += ((deltafull_ts - 1) << DFS_TSSHIFT); } } else { deltafull_ts = re.re_full_ts - dfs->dfs_rinfo.rn_lastfull_ts; if (deltafull_ts > (u_int64_t) DFS_TSMASK) { deltafull_ts = deltafull_ts >> DFS_TSSHIFT; dfs->dfs_rinfo.rn_ts_prefix += ((deltafull_ts - 1) << DFS_TSSHIFT); } }
/* This function Initialize the radar filter tables * if the ath dfs domain is uninitalized or * ath dfs domain is different from hal dfs domain */ int dfs_init_radar_filters(struct ieee80211com *ic, struct ath_dfs_radar_tab_info *radar_info) { u_int32_t T, Tmax; int numpulses,p,n, i; int numradars = 0, numb5radars = 0; struct ath_dfs *dfs = (struct ath_dfs *)ic->ic_dfs; struct dfs_filtertype *ft = NULL; struct dfs_filter *rf=NULL; struct dfs_pulse *dfs_radars; struct dfs_bin5pulse *b5pulses=NULL; int32_t min_rssithresh=DFS_MAX_RSSI_VALUE; u_int32_t max_pulsedur=0; if (dfs == NULL) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s[%d]: dfs is NULL", __func__, __LINE__); return DFS_STATUS_FAIL; } /* clear up the dfs domain flag first */ #ifndef ATH_DFS_RADAR_DETECTION_ONLY dfs->ath_dfs_isdfsregdomain = 0; #endif /* * If radar_info is NULL or dfsdomain is NULL, treat * the rest of the radar configuration as suspect. */ if (radar_info == NULL || radar_info->dfsdomain == 0) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s[%d]: Unknown dfs domain %d ", __func__, __LINE__, dfs->dfsdomain); /* Disable radar detection since we don't have a radar domain */ dfs->dfs_proc_phyerr &= ~DFS_RADAR_EN; /* Returning success though we are not completing init. A failure * will fail dfs_attach also. */ return DFS_STATUS_SUCCESS; } VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s[%d]:dfsdomain=%d, numradars=%d, numb5radars=%d", __func__, __LINE__, radar_info->dfsdomain, radar_info->numradars, radar_info->numb5radars); dfs->dfsdomain = radar_info->dfsdomain; dfs_radars = radar_info->dfs_radars; numradars = radar_info->numradars; b5pulses = radar_info->b5pulses; numb5radars = radar_info->numb5radars; /* XXX this should be an explicit copy of some sort! */ dfs->dfs_defaultparams = radar_info->dfs_defaultparams; #ifndef ATH_DFS_RADAR_DETECTION_ONLY dfs->ath_dfs_isdfsregdomain = 1; #endif dfs->dfs_rinfo.rn_numradars = 0; /* Clear filter type table */ for (n = 0; n < 256; n++) { for (i=0;i<DFS_MAX_RADAR_OVERLAP; i++) (dfs->dfs_radartable[n])[i] = -1; } /* Now, initialize the radar filters */ for (p=0; p<numradars; p++) { ft = NULL; for (n=0; n<dfs->dfs_rinfo.rn_numradars; n++) { if ((dfs_radars[p].rp_pulsedur == dfs->dfs_radarf[n]->ft_filterdur) && (dfs_radars[p].rp_numpulses == dfs->dfs_radarf[n]->ft_numpulses) && (dfs_radars[p].rp_mindur == dfs->dfs_radarf[n]->ft_mindur) && (dfs_radars[p].rp_maxdur == dfs->dfs_radarf[n]->ft_maxdur)) { ft = dfs->dfs_radarf[n]; break; } } if (ft == NULL) { /* No filter of the appropriate dur was found */ if ((dfs->dfs_rinfo.rn_numradars+1) >DFS_MAX_RADAR_TYPES) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: Too many filter types", __func__); goto bad4; } ft = dfs->dfs_radarf[dfs->dfs_rinfo.rn_numradars]; ft->ft_numfilters = 0; ft->ft_numpulses = dfs_radars[p].rp_numpulses; ft->ft_patterntype = dfs_radars[p].rp_patterntype; ft->ft_mindur = dfs_radars[p].rp_mindur; ft->ft_maxdur = dfs_radars[p].rp_maxdur; ft->ft_filterdur = dfs_radars[p].rp_pulsedur; ft->ft_rssithresh = dfs_radars[p].rp_rssithresh; ft->ft_rssimargin = dfs_radars[p].rp_rssimargin; ft->ft_minpri = 1000000; if (ft->ft_rssithresh < min_rssithresh) min_rssithresh = ft->ft_rssithresh; if (ft->ft_maxdur > max_pulsedur) max_pulsedur = ft->ft_maxdur; for (i=ft->ft_mindur; i<=ft->ft_maxdur; i++) { u_int32_t stop=0,tableindex=0; while ((tableindex < DFS_MAX_RADAR_OVERLAP) && (!stop)) { if ((dfs->dfs_radartable[i])[tableindex] == -1) stop = 1; else tableindex++; } if (stop) { (dfs->dfs_radartable[i])[tableindex] = (int8_t) (dfs->dfs_rinfo.rn_numradars); } else { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: Too many overlapping radar filters", __func__); goto bad4; } } dfs->dfs_rinfo.rn_numradars++; } rf = &(ft->ft_filters[ft->ft_numfilters++]); dfs_reset_delayline(&rf->rf_dl); numpulses = dfs_radars[p].rp_numpulses; rf->rf_numpulses = numpulses; rf->rf_patterntype = dfs_radars[p].rp_patterntype; rf->rf_pulseid = dfs_radars[p].rp_pulseid; rf->rf_mindur = dfs_radars[p].rp_mindur; rf->rf_maxdur = dfs_radars[p].rp_maxdur; rf->rf_numpulses = dfs_radars[p].rp_numpulses; rf->rf_ignore_pri_window = dfs_radars[p].rp_ignore_pri_window; T = (100000000/dfs_radars[p].rp_max_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_minpri = dfs_round((int32_t)T - (100*(dfs_radars[p].rp_pulsevar))); Tmax = (100000000/dfs_radars[p].rp_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_maxpri = dfs_round((int32_t)Tmax + (100*(dfs_radars[p].rp_pulsevar))); if( rf->rf_minpri < ft->ft_minpri ) ft->ft_minpri = rf->rf_minpri; rf->rf_fixed_pri_radar_pulse = ( dfs_radars[p].rp_max_pulsefreq == dfs_radars[p].rp_pulsefreq ) ? 1 : 0; rf->rf_threshold = dfs_radars[p].rp_threshold; rf->rf_filterlen = rf->rf_maxpri * rf->rf_numpulses; VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s[%d]: minprf = %d maxprf = %d pulsevar = %d thresh=%d", __func__,__LINE__,dfs_radars[p].rp_pulsefreq, dfs_radars[p].rp_max_pulsefreq, dfs_radars[p].rp_pulsevar, rf->rf_threshold); VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s[%d]:minpri = %d maxpri = %d filterlen = %d filterID = %d",__func__,__LINE__, rf->rf_minpri, rf->rf_maxpri, rf->rf_filterlen, rf->rf_pulseid); } #ifdef DFS_DEBUG dfs_print_filters(ic); #endif dfs->dfs_rinfo.rn_numbin5radars = numb5radars; if (dfs->dfs_b5radars != NULL) OS_FREE(dfs->dfs_b5radars); dfs->dfs_b5radars = (struct dfs_bin5radars *)OS_MALLOC(NULL, numb5radars * sizeof(struct dfs_bin5radars), GFP_KERNEL); if (dfs->dfs_b5radars == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: cannot allocate memory for bin5 radars", __func__); goto bad4; } for (n=0; n<numb5radars; n++) { dfs->dfs_b5radars[n].br_pulse = b5pulses[n]; dfs->dfs_b5radars[n].br_pulse.b5_timewindow *= 1000000; if (dfs->dfs_b5radars[n].br_pulse.b5_rssithresh < min_rssithresh) min_rssithresh = dfs->dfs_b5radars[n].br_pulse.b5_rssithresh; if (dfs->dfs_b5radars[n].br_pulse.b5_maxdur > max_pulsedur) max_pulsedur = dfs->dfs_b5radars[n].br_pulse.b5_maxdur; } dfs_reset_alldelaylines(dfs); dfs_reset_radarq(dfs); dfs->dfs_curchan_radindex = -1; dfs->dfs_extchan_radindex = -1; dfs->dfs_rinfo.rn_minrssithresh = min_rssithresh; /* Convert durations to TSF ticks */ dfs->dfs_rinfo.rn_maxpulsedur = dfs_round((int32_t)((max_pulsedur*100/80)*100)); /* relax the max pulse duration a little bit due to inaccuracy caused by chirping. */ dfs->dfs_rinfo.rn_maxpulsedur = dfs->dfs_rinfo.rn_maxpulsedur +20; VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s[%d]: DFS min filter rssiThresh = %d", __func__, __LINE__, min_rssithresh); VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s[%d]:DFS max pulse dur = %d ticks", __func__ ,__LINE__, dfs->dfs_rinfo.rn_maxpulsedur); return DFS_STATUS_SUCCESS; bad4: return DFS_STATUS_FAIL; }
/* This function Initialize the radar filter tables * if the ath dfs domain is uninitalized or * ath dfs domain is different from hal dfs domain */ int dfs_init_radar_filters( struct ath_softc *sc ) { u_int32_t T, Tmax, haldfsdomain; int numpulses,p,n, i; int numradars = 0, numb5radars = 0; struct ath_dfs *dfs = sc->sc_dfs; struct dfs_filtertype *ft = NULL; struct dfs_filter *rf=NULL; struct dfs_pulse *dfs_radars; struct dfs_bin5pulse *b5pulses=NULL; int32_t min_rssithresh=DFS_MAX_RSSI_VALUE; u_int32_t max_pulsedur=0; if ( dfs == NULL ) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "dfs is NULL %s",__func__); return 1; } /* clear up the dfs domain flag first */ #ifndef ATH_DFS_RADAR_DETECTION_ONLY dfs->sc_dfs_isdfsregdomain = 0; #endif /* clear athsstats/DFS related information */ sc->sc_stats.ast_dfs_stats.event_count = 0; sc->sc_stats.ast_dfs_stats.chirp_count = 0; sc->sc_stats.ast_dfs_stats.num_filter = 0; if (ath_hal_getcapability(sc->sc_ah, HAL_CAP_PHYDIAG, HAL_CAP_RADAR, NULL) == HAL_OK) { /* Init DFS radar filters */ ath_hal_getcapability(sc->sc_ah, HAL_CAP_DFS_DMN, 0, &haldfsdomain); if ( (dfs->dfsdomain == DFS_UNINIT_DOMAIN) || ( dfs->dfsdomain != haldfsdomain ) ) { /* set the dfs domain from HAL */ dfs->dfsdomain = haldfsdomain; DFS_DPRINTK(sc, ATH_DEBUG_DFS2, "DFS domain=%d\n",dfs->dfsdomain); if (domainoverride != DFS_UNINIT_DOMAIN) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "Overriding DFS domain with %d\n",domainoverride); dfs->dfsdomain = domainoverride; } dfs_radars = ath_hal_getdfsradars(sc->sc_ah, dfs->dfsdomain, &numradars, &b5pulses, &numb5radars, &(dfs->dfs_defaultparams)); if (dfs_radars == NULL) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: Unknown dfs domain %d\n", __func__, dfs->dfsdomain); /* Disable radar detection since we don't have a radar domain */ dfs->dfs_proc_phyerr &= ~DFS_RADAR_EN; return 0; } #ifndef ATH_DFS_RADAR_DETECTION_ONLY dfs->sc_dfs_isdfsregdomain = 1; #endif dfs->dfs_rinfo.rn_numradars = 0; /* Clear filter type table */ for (n=0; n<256; n++) { for (i=0;i<DFS_MAX_RADAR_OVERLAP; i++) (dfs->dfs_radartable[n])[i] = -1; } /* Now, initialize the radar filters */ for (p=0; p<numradars; p++) { ft = NULL; for (n=0; n<dfs->dfs_rinfo.rn_numradars; n++) { if ((dfs_radars[p].rp_pulsedur == dfs->dfs_radarf[n]->ft_filterdur) && (dfs_radars[p].rp_numpulses == dfs->dfs_radarf[n]->ft_numpulses) && (dfs_radars[p].rp_mindur == dfs->dfs_radarf[n]->ft_mindur) && (dfs_radars[p].rp_maxdur == dfs->dfs_radarf[n]->ft_maxdur)) { ft = dfs->dfs_radarf[n]; break; } } if (ft == NULL) { /* No filter of the appropriate dur was found */ if ((dfs->dfs_rinfo.rn_numradars+1) >DFS_MAX_RADAR_TYPES) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: Too many filter types\n", __func__); goto bad4; } ft = dfs->dfs_radarf[dfs->dfs_rinfo.rn_numradars]; ft->ft_numfilters = 0; ft->ft_numpulses = dfs_radars[p].rp_numpulses; ft->ft_patterntype = dfs_radars[p].rp_patterntype; ft->ft_mindur = dfs_radars[p].rp_mindur; ft->ft_maxdur = dfs_radars[p].rp_maxdur; ft->ft_filterdur = dfs_radars[p].rp_pulsedur; ft->ft_rssithresh = dfs_radars[p].rp_rssithresh; ft->ft_rssimargin = dfs_radars[p].rp_rssimargin; ft->ft_minpri = 1000000; if (ft->ft_rssithresh < min_rssithresh) min_rssithresh = ft->ft_rssithresh; if (ft->ft_maxdur > max_pulsedur) max_pulsedur = ft->ft_maxdur; for (i=ft->ft_mindur; i<=ft->ft_maxdur; i++) { u_int32_t stop=0,tableindex=0; while ((tableindex < DFS_MAX_RADAR_OVERLAP) && (!stop)) { if ((dfs->dfs_radartable[i])[tableindex] == -1) stop = 1; else tableindex++; } if (stop) { (dfs->dfs_radartable[i])[tableindex] = (int8_t) (dfs->dfs_rinfo.rn_numradars); } else { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: Too many overlapping radar filters\n", __func__); goto bad4; } } dfs->dfs_rinfo.rn_numradars++; } rf = &(ft->ft_filters[ft->ft_numfilters++]); dfs_reset_delayline(&rf->rf_dl); numpulses = dfs_radars[p].rp_numpulses; rf->rf_numpulses = numpulses; rf->rf_patterntype = dfs_radars[p].rp_patterntype; rf->rf_pulseid = dfs_radars[p].rp_pulseid; rf->rf_mindur = dfs_radars[p].rp_mindur; rf->rf_maxdur = dfs_radars[p].rp_maxdur; rf->rf_numpulses = dfs_radars[p].rp_numpulses; rf->rf_ignore_pri_window = dfs_radars[p].rp_ignore_pri_window; T = (100000000/dfs_radars[p].rp_max_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_minpri = dfs_round((int32_t)T - (100*(dfs_radars[p].rp_pulsevar))); Tmax = (100000000/dfs_radars[p].rp_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_maxpri = dfs_round((int32_t)Tmax + (100*(dfs_radars[p].rp_pulsevar))); if( rf->rf_minpri < ft->ft_minpri ) ft->ft_minpri = rf->rf_minpri; rf->rf_fixed_pri_radar_pulse = ( dfs_radars[p].rp_max_pulsefreq == dfs_radars[p].rp_pulsefreq ) ? 1 : 0; rf->rf_threshold = dfs_radars[p].rp_threshold; rf->rf_filterlen = rf->rf_maxpri * rf->rf_numpulses; DFS_DPRINTK(sc, ATH_DEBUG_DFS2, "minprf = %d maxprf = %d pulsevar = %d thresh=%d\n", dfs_radars[p].rp_pulsefreq, dfs_radars[p].rp_max_pulsefreq, dfs_radars[p].rp_pulsevar, rf->rf_threshold); DFS_DPRINTK(sc, ATH_DEBUG_DFS2, "minpri = %d maxpri = %d filterlen = %d filterID = %d\n", rf->rf_minpri, rf->rf_maxpri, rf->rf_filterlen, rf->rf_pulseid); /* initialize athsstats/DFS related information */ i = sc->sc_stats.ast_dfs_stats.num_filter; sc->sc_stats.ast_dfs_stats.fstat[i].max_pri_count = 0; sc->sc_stats.ast_dfs_stats.fstat[i].max_used_pri = 0; sc->sc_stats.ast_dfs_stats.fstat[i].excess_pri = 0; sc->sc_stats.ast_dfs_stats.fstat[i].pri_threshold_reached = 0; sc->sc_stats.ast_dfs_stats.fstat[i].dur_threshold_reached = 0; sc->sc_stats.ast_dfs_stats.fstat[i].rssi_threshold_reached = 0; sc->sc_stats.ast_dfs_stats.fstat[i].filter_id = rf->rf_pulseid; sc->sc_stats.ast_dfs_stats.num_filter++; } #ifdef DFS_DEBUG dfs_print_filters(sc); #endif dfs->dfs_rinfo.rn_numbin5radars = numb5radars; if ( dfs->dfs_b5radars == NULL ) { dfs->dfs_b5radars = (struct dfs_bin5radars *)OS_MALLOC(sc->sc_osdev, numb5radars * sizeof(struct dfs_bin5radars), GFP_KERNEL); if (dfs->dfs_b5radars == NULL) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: cannot allocate memory for bin5 radars\n", __func__); goto bad4; } } for (n=0; n<numb5radars; n++) { dfs->dfs_b5radars[n].br_pulse = b5pulses[n]; dfs->dfs_b5radars[n].br_pulse.b5_timewindow *= 1000000; if (dfs->dfs_b5radars[n].br_pulse.b5_rssithresh < min_rssithresh) min_rssithresh = dfs->dfs_b5radars[n].br_pulse.b5_rssithresh; if (dfs->dfs_b5radars[n].br_pulse.b5_maxdur > max_pulsedur ) max_pulsedur = dfs->dfs_b5radars[n].br_pulse.b5_maxdur; } dfs_reset_alldelaylines(sc); dfs_reset_radarq(sc); dfs->dfs_curchan_radindex = -1; dfs->dfs_extchan_radindex = -1; dfs->dfs_rinfo.rn_minrssithresh = min_rssithresh; /* Convert durations to TSF ticks */ dfs->dfs_rinfo.rn_maxpulsedur = dfs_round((int32_t)((max_pulsedur*100/80)*100)); /* relax the max pulse duration a little bit due to inaccuracy caused by chirping. */ dfs->dfs_rinfo.rn_maxpulsedur = dfs->dfs_rinfo.rn_maxpulsedur +20; DFS_DPRINTK (sc, ATH_DEBUG_DFS, "DFS min filter rssiThresh = %d\n",min_rssithresh); DFS_DPRINTK (sc, ATH_DEBUG_DFS, "DFS max pulse dur = %d ticks\n", dfs->dfs_rinfo.rn_maxpulsedur); return 0; bad4: return 1; } } return 0; }
/* * Process a radar event. * * If a radar event is found, return 1. Otherwise, return 0. * * There is currently no way to specify that a radar event has occured on * a specific channel, so the current methodology is to mark both the pri * and ext channels as being unavailable. This should be fixed for 802.11ac * or we'll quickly run out of valid channels to use. */ int dfs_process_radarevent(struct ath_dfs *dfs, struct ieee80211_channel *chan) { struct dfs_event re,*event; struct dfs_state *rs=NULL; struct dfs_filtertype *ft; struct dfs_filter *rf; int found, retval = 0, p, empty; int events_processed = 0; u_int32_t tabledepth, index; u_int64_t deltafull_ts = 0, this_ts, deltaT; struct ieee80211_channel *thischan; struct dfs_pulseline *pl; static u_int32_t test_ts = 0; static u_int32_t diff_ts = 0; int ext_chan_event_flag = 0; int i; if (dfs == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: sc_sfs is NULL\n", __func__); return 0; } pl = dfs->pulses; if ( !(IEEE80211_IS_CHAN_DFS(dfs->ic->ic_curchan))) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS2, "%s: radar event on non-DFS chan\n", __func__); dfs_reset_radarq(dfs); dfs_reset_alldelaylines(dfs); return 0; } #ifndef ATH_DFS_RADAR_DETECTION_ONLY /* TEST : Simulate radar bang, make sure we add the channel to NOL (bug 29968) */ if (dfs->dfs_bangradar) { /* bangradar will always simulate radar found on the primary channel */ rs = &dfs->dfs_radar[dfs->dfs_curchan_radindex]; dfs->dfs_bangradar = 0; /* reset */ DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: bangradar\n", __func__); retval = 1; goto dfsfound; } #endif /* The HW may miss some pulses especially with high channel loading. This is true for Japan W53 where channel loaoding is 50%. Also for ETSI where channel loading is 30% this can be an issue too. To take care of missing pulses, we introduce pri_margin multiplie. This is normally 2 but can be higher for W53. */ if ((dfs->dfsdomain == DFS_MKK4_DOMAIN) && (dfs->dfs_caps.ath_chip_is_bb_tlv) && (chan->ic_freq < FREQ_5500_MHZ)) { dfs->dfs_pri_multiplier = DFS_W53_DEFAULT_PRI_MULTIPLIER; /* do not process W53 pulses unless we have a minimum number of them */ if (dfs->dfs_phyerr_w53_counter >= 5) { /* for chips that support frequency information, we can relax PRI restriction if the frequency spread is narrow. */ if ((dfs->dfs_phyerr_freq_max - dfs->dfs_phyerr_freq_min) < DFS_MAX_FREQ_SPREAD) { dfs->dfs_pri_multiplier = DFS_LARGE_PRI_MULTIPLIER; } DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "%s: w53_counter=%d, freq_max=%d, freq_min=%d, pri_multiplier=%d\n", __func__, dfs->dfs_phyerr_w53_counter, dfs->dfs_phyerr_freq_max, dfs->dfs_phyerr_freq_min, dfs->dfs_pri_multiplier); dfs->dfs_phyerr_freq_min = 0x7fffffff; dfs->dfs_phyerr_freq_max = 0; } else { return 0; } } DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "%s: pri_multiplier=%d\n", __func__, dfs->dfs_pri_multiplier); ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); while ((!empty) && (!retval) && (events_processed < MAX_EVENTS)) { ATH_DFSQ_LOCK(dfs); event = STAILQ_FIRST(&(dfs->dfs_radarq)); if (event != NULL) STAILQ_REMOVE_HEAD(&(dfs->dfs_radarq), re_list); ATH_DFSQ_UNLOCK(dfs); if (event == NULL) { empty = 1; break; } events_processed++; re = *event; OS_MEMZERO(event, sizeof(struct dfs_event)); ATH_DFSEVENTQ_LOCK(dfs); STAILQ_INSERT_TAIL(&(dfs->dfs_eventq), event, re_list); ATH_DFSEVENTQ_UNLOCK(dfs); found = 0; if (re.re_chanindex < DFS_NUM_RADAR_STATES) rs = &dfs->dfs_radar[re.re_chanindex]; else { ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); continue; } if (rs->rs_chan.ic_flagext & CHANNEL_INTERFERENCE) { ATH_DFSQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_radarq)); ATH_DFSQ_UNLOCK(dfs); continue; } if (dfs->dfs_rinfo.rn_lastfull_ts == 0) { /* * Either not started, or 64-bit rollover exactly to zero * Just prepend zeros to the 15-bit ts */ dfs->dfs_rinfo.rn_ts_prefix = 0; } else { /* WAR 23031- patch duplicate ts on very short pulses */ /* This pacth has two problems in linux environment. * 1)The time stamp created and hence PRI depends entirely on the latency. * If the latency is high, it possibly can split two consecutive * pulses in the same burst so far away (the same amount of latency) * that make them look like they are from differenct bursts. It is * observed to happen too often. It sure makes the detection fail. * 2)Even if the latency is not that bad, it simply shifts the duplicate * timestamps to a new duplicate timestamp based on how they are processed. * This is not worse but not good either. * * Take this pulse as a good one and create a probable PRI later */ if (re.re_dur == 0 && re.re_ts == dfs->dfs_rinfo.rn_last_unique_ts) { debug_dup[debug_dup_cnt++] = '1'; DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "\n %s deltaT is 0 \n", __func__); } else { dfs->dfs_rinfo.rn_last_unique_ts = re.re_ts; debug_dup[debug_dup_cnt++] = '0'; } if (debug_dup_cnt >= 32) { debug_dup_cnt = 0; } if (re.re_ts <= dfs->dfs_rinfo.rn_last_ts) { dfs->dfs_rinfo.rn_ts_prefix += (((u_int64_t) 1) << DFS_TSSHIFT); /* Now, see if it's been more than 1 wrap */ deltafull_ts = re.re_full_ts - dfs->dfs_rinfo.rn_lastfull_ts; if (deltafull_ts > ((u_int64_t)((DFS_TSMASK - dfs->dfs_rinfo.rn_last_ts) + 1 + re.re_ts))) deltafull_ts -= (DFS_TSMASK - dfs->dfs_rinfo.rn_last_ts) + 1 + re.re_ts; deltafull_ts = deltafull_ts >> DFS_TSSHIFT; if (deltafull_ts > 1) { dfs->dfs_rinfo.rn_ts_prefix += ((deltafull_ts - 1) << DFS_TSSHIFT); } } else { deltafull_ts = re.re_full_ts - dfs->dfs_rinfo.rn_lastfull_ts; if (deltafull_ts > (u_int64_t) DFS_TSMASK) { deltafull_ts = deltafull_ts >> DFS_TSSHIFT; dfs->dfs_rinfo.rn_ts_prefix += ((deltafull_ts - 1) << DFS_TSSHIFT); } }
/* * This is called each time a channel change occurs, to (potentially) enable * the radar code. */ int dfs_radar_enable(struct ieee80211com *ic, struct ath_dfs_radar_tab_info *radar_info, int no_cac) { int is_ext_ch=IEEE80211_IS_CHAN_11N_HT40(ic->ic_curchan); int is_fastclk = 0; //u_int32_t rfilt; struct ath_dfs *dfs=(struct ath_dfs *)ic->ic_dfs; struct ieee80211_channel *chan=ic->ic_curchan, *ext_ch = NULL; if (dfs == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: ic_dfs is NULL\n", __func__); return -EIO; } ic->ic_dfs_disable(ic, no_cac); /* * Setting country code might change the DFS domain * so initialize the DFS Radar filters */ dfs_init_radar_filters(ic, radar_info); #if ATH_SUPPORT_DFS && ATH_SUPPORT_STA_DFS if ((ic->ic_opmode == IEEE80211_M_HOSTAP || ic->ic_opmode == IEEE80211_M_IBSS || (ic->ic_opmode == IEEE80211_M_STA && ieee80211com_has_cap_ext(dfs->ic,IEEE80211_CEXT_STADFS)))) { #else if ((ic->ic_opmode == IEEE80211_M_HOSTAP || ic->ic_opmode == IEEE80211_M_IBSS)) { #endif if (IEEE80211_IS_CHAN_DFS(chan)) { struct dfs_state *rs_pri=NULL, *rs_ext=NULL; u_int8_t index_pri, index_ext; #ifdef ATH_ENABLE_AR dfs->dfs_proc_phyerr |= DFS_AR_EN; #endif dfs->dfs_proc_phyerr |= DFS_RADAR_EN; //printk( "%s[%d]: ==== 0x%08x\n", __func__, __LINE__, dfs->dfs_proc_phyerr); if (is_ext_ch) { ext_ch = ieee80211_get_extchan(ic); } dfs_reset_alldelaylines(dfs); rs_pri = dfs_getchanstate(dfs, &index_pri, 0); if (ext_ch) { rs_ext = dfs_getchanstate(dfs, &index_ext, 1); } if (rs_pri != NULL && ((ext_ch==NULL)||(rs_ext != NULL))) { struct ath_dfs_phyerr_param pe; OS_MEMSET(&pe, '\0', sizeof(pe)); if (index_pri != dfs->dfs_curchan_radindex) dfs_reset_alldelaylines(dfs); dfs->dfs_curchan_radindex = (int16_t) index_pri; if (rs_ext) dfs->dfs_extchan_radindex = (int16_t) index_ext; ath_dfs_phyerr_param_copy(&pe, &rs_pri->rs_param); DFS_DPRINTK(dfs, ATH_DEBUG_DFS3, "%s: firpwr=%d, rssi=%d, height=%d, " "prssi=%d, inband=%d, relpwr=%d, " "relstep=%d, maxlen=%d\n", __func__, pe.pe_firpwr, pe.pe_rrssi, pe.pe_height, pe.pe_prssi, pe.pe_inband, pe.pe_relpwr, pe.pe_relstep, pe.pe_maxlen ); #if 0 //Not needed /* Disable strong signal fast antenna diversity */ ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, 1, NULL); #endif ic->ic_dfs_enable(ic, &is_fastclk, &pe); DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "Enabled radar detection on channel %d\n", chan->ic_freq); dfs->dur_multiplier = is_fastclk ? DFS_FAST_CLOCK_MULTIPLIER : DFS_NO_FAST_CLOCK_MULTIPLIER; DFS_DPRINTK(dfs, ATH_DEBUG_DFS3, "%s: duration multiplier is %d\n", __func__, dfs->dur_multiplier); } else DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: No more radar states left\n", __func__); } } return 0; } int dfs_control(struct ieee80211com *ic, u_int id, void *indata, u_int32_t insize, void *outdata, u_int32_t *outsize) { int error = 0; struct ath_dfs_phyerr_param peout; struct ath_dfs *dfs = (struct ath_dfs *)ic->ic_dfs; struct dfs_ioctl_params *dfsparams; u_int32_t val=0; #ifndef ATH_DFS_RADAR_DETECTION_ONLY struct dfsreq_nolinfo *nol; u_int32_t *data = NULL; #endif /* ATH_DFS_RADAR_DETECTION_ONLY */ int i; if (dfs == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "%s DFS is null\n", __func__); /* Enable/Disable DFS can be done prior to attach, So handle here */ switch (id) { case DFS_DISABLE_DETECT: ic->ic_dfs_state.ignore_dfs = 1; DFS_PRINTK("%s enable detects, ignore_dfs %d\n", __func__, ic->ic_dfs_state.ignore_dfs ? 1:0); break; case DFS_ENABLE_DETECT: ic->ic_dfs_state.ignore_dfs = 0; DFS_PRINTK("%s enable detects, ignore_dfs %d\n", __func__, ic->ic_dfs_state.ignore_dfs ? 1:0); break; default: error = -EINVAL; break; } goto bad; } //printk("%s[%d] id =%d\n", __func__, __LINE__, id); switch (id) { case DFS_SET_THRESH: if (insize < sizeof(struct dfs_ioctl_params) || !indata) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "%s: insize=%d, expected=%d bytes, indata=%p\n", __func__, insize, sizeof(struct dfs_ioctl_params), indata); error = -EINVAL; break; } dfsparams = (struct dfs_ioctl_params *) indata; if (!dfs_set_thresholds(ic, DFS_PARAM_FIRPWR, dfsparams->dfs_firpwr)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_RRSSI, dfsparams->dfs_rrssi)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_HEIGHT, dfsparams->dfs_height)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_PRSSI, dfsparams->dfs_prssi)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_INBAND, dfsparams->dfs_inband)) error = -EINVAL; /* 5413 speicfic */ if (!dfs_set_thresholds(ic, DFS_PARAM_RELPWR, dfsparams->dfs_relpwr)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_RELSTEP, dfsparams->dfs_relstep)) error = -EINVAL; if (!dfs_set_thresholds(ic, DFS_PARAM_MAXLEN, dfsparams->dfs_maxlen)) error = -EINVAL; break; case DFS_GET_THRESH: if (!outdata || !outsize || *outsize <sizeof(struct dfs_ioctl_params)) { error = -EINVAL; break; } *outsize = sizeof(struct dfs_ioctl_params); dfsparams = (struct dfs_ioctl_params *) outdata; /* * Fetch the DFS thresholds using the internal representation. */ (void) dfs_get_thresholds(ic, &peout); /* * Convert them to the dfs IOCTL representation. */ ath_dfs_dfsparam_to_ioctlparam(&peout, dfsparams); break; case DFS_RADARDETECTS: if (!outdata || !outsize || *outsize < sizeof(u_int32_t)) { error = -EINVAL; break; } *outsize = sizeof (u_int32_t); *((u_int32_t *)outdata) = dfs->ath_dfs_stats.num_radar_detects; break; case DFS_DISABLE_DETECT: dfs->dfs_proc_phyerr &= ~DFS_RADAR_EN; dfs->ic->ic_dfs_state.ignore_dfs = 1; DFS_PRINTK("%s enable detects, ignore_dfs %d\n", __func__, dfs->ic->ic_dfs_state.ignore_dfs ? 1:0); break; case DFS_ENABLE_DETECT: dfs->dfs_proc_phyerr |= DFS_RADAR_EN; dfs->ic->ic_dfs_state.ignore_dfs = 0; DFS_PRINTK("%s enable detects, ignore_dfs %d\n", __func__, dfs->ic->ic_dfs_state.ignore_dfs ? 1:0); break; case DFS_DISABLE_FFT: //UMACDFS: TODO: val = ath_hal_dfs_config_fft(sc->sc_ah, false); DFS_PRINTK("%s TODO disable FFT val=0x%x \n", __func__, val); break; case DFS_ENABLE_FFT: //UMACDFS TODO: val = ath_hal_dfs_config_fft(sc->sc_ah, true); DFS_PRINTK("%s TODO enable FFT val=0x%x \n", __func__, val); break; case DFS_SET_DEBUG_LEVEL: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } dfs->dfs_debug_mask= *(u_int32_t *)indata; DFS_PRINTK("%s debug level now = 0x%x \n", __func__, dfs->dfs_debug_mask); if (dfs->dfs_debug_mask & ATH_DEBUG_DFS3) { /* Enable debug Radar Event */ dfs->dfs_event_log_on = 1; } else { dfs->dfs_event_log_on = 0; } break; case DFS_SET_FALSE_RSSI_THRES: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } dfs->ath_dfs_false_rssi_thres= *(u_int32_t *)indata; DFS_PRINTK("%s false RSSI threshold now = 0x%x \n", __func__, dfs->ath_dfs_false_rssi_thres); break; case DFS_SET_PEAK_MAG: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } dfs->ath_dfs_peak_mag= *(u_int32_t *)indata; DFS_PRINTK("%s peak_mag now = 0x%x \n", __func__, dfs->ath_dfs_peak_mag); break; case DFS_GET_CAC_VALID_TIME: if (!outdata || !outsize || *outsize < sizeof(u_int32_t)) { error = -EINVAL; break; } *outsize = sizeof (u_int32_t); *((u_int32_t *)outdata) = dfs->ic->ic_dfs_state.cac_valid_time; break; case DFS_SET_CAC_VALID_TIME: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } dfs->ic->ic_dfs_state.cac_valid_time = *(u_int32_t *)indata; DFS_PRINTK("%s dfs timeout = %d \n", __func__, dfs->ic->ic_dfs_state.cac_valid_time); break; case DFS_IGNORE_CAC: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } if (*(u_int32_t *)indata) { dfs->ic->ic_dfs_state.ignore_cac= 1; } else { dfs->ic->ic_dfs_state.ignore_cac= 0; } DFS_PRINTK("%s ignore cac = 0x%x \n", __func__, dfs->ic->ic_dfs_state.ignore_cac); break; case DFS_SET_NOL_TIMEOUT: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } if (*(int *)indata) { dfs->ath_dfs_nol_timeout= *(int *)indata; } else { dfs->ath_dfs_nol_timeout= DFS_NOL_TIMEOUT_S; } DFS_PRINTK("%s nol timeout = %d sec \n", __func__, dfs->ath_dfs_nol_timeout); break; #ifndef ATH_DFS_RADAR_DETECTION_ONLY case DFS_MUTE_TIME: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } data = (u_int32_t *) indata; dfs->ath_dfstesttime = *data; dfs->ath_dfstesttime *= (1000); //convert sec into ms break; case DFS_GET_USENOL: if (!outdata || !outsize || *outsize < sizeof(u_int32_t)) { error = -EINVAL; break; } *outsize = sizeof(u_int32_t); *((u_int32_t *)outdata) = dfs->dfs_rinfo.rn_use_nol; printk("%s:#Phyerr=%d, #false detect=%d, #queued=%d\n", __func__,dfs->dfs_phyerr_count, dfs->dfs_phyerr_reject_count, dfs->dfs_phyerr_queued_count); printk("%s:dfs_phyerr_freq_min=%d, dfs_phyerr_freq_max=%d\n", __func__,dfs->dfs_phyerr_freq_min, dfs->dfs_phyerr_freq_max); printk("%s:Total radar events detected=%d, entries in the radar queue follows:\n", __func__,dfs->dfs_event_log_count); for (i = 0; (i < DFS_EVENT_LOG_SIZE) && (i < dfs->dfs_event_log_count); i++) { //DFS_DPRINTK(sc, ATH_DEBUG_DFS,"ts=%llu diff_ts=%u rssi=%u dur=%u\n", dfs->radar_log[i].ts, dfs->radar_log[i].diff_ts, dfs->radar_log[i].rssi, dfs->radar_log[i].dur); printk("ts=%llu diff_ts=%u rssi=%u dur=%u\n", dfs->radar_log[i].ts, dfs->radar_log[i].diff_ts, dfs->radar_log[i].rssi, dfs->radar_log[i].dur); } dfs->dfs_event_log_count = 0; dfs->dfs_phyerr_count = 0; dfs->dfs_phyerr_reject_count = 0; dfs->dfs_phyerr_queued_count = 0; dfs->dfs_phyerr_freq_min = 0x7fffffff; dfs->dfs_phyerr_freq_max = 0; break; case DFS_SET_USENOL: if (insize < sizeof(u_int32_t) || !indata) { error = -EINVAL; break; } dfs->dfs_rinfo.rn_use_nol = *(u_int32_t *)indata; /* iwpriv markdfs in linux can do the same thing... */ break; case DFS_GET_NOL: if (!outdata || !outsize || *outsize < sizeof(struct dfsreq_nolinfo)) { error = -EINVAL; break; } *outsize = sizeof(struct dfsreq_nolinfo); nol = (struct dfsreq_nolinfo *)outdata; dfs_get_nol(dfs, (struct dfsreq_nolelem *)nol->dfs_nol, &nol->ic_nchans); dfs_print_nol(dfs); break; case DFS_SET_NOL: if (insize < sizeof(struct dfsreq_nolinfo) || !indata) { error = -EINVAL; break; } nol = (struct dfsreq_nolinfo *) indata; dfs_set_nol(dfs, (struct dfsreq_nolelem *)nol->dfs_nol, nol->ic_nchans); break; case DFS_SHOW_NOL: dfs_print_nol(dfs); break; #if ATH_SUPPORT_DFS && ATH_SUPPORT_STA_DFS case DFS_SHOW_NOLHISTORY: dfs_print_nolhistory(ic,dfs); break; #endif case DFS_BANGRADAR: #if 0 //MERGE_TBD if(sc->sc_nostabeacons) { printk("No radar detection Enabled \n"); break; } #endif dfs->dfs_bangradar = 1; dfs->ath_radar_tasksched = 1; OS_SET_TIMER(&dfs->ath_dfs_task_timer, 0); break; #endif /* ATH_DFS_RADAR_DETECTION_ONLY */ default: error = -EINVAL; } bad: return error; }
void dfs_detach(struct ieee80211com *ic) { struct ath_dfs *dfs = (struct ath_dfs *)ic->ic_dfs; int n, empty; if (dfs == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS1, "%s: ic_dfs is NULL\n", __func__); return; } /* Bug 29099 make sure all outstanding timers are cancelled*/ if (dfs->ath_radar_tasksched) { OS_CANCEL_TIMER(&dfs->ath_dfs_task_timer); dfs->ath_radar_tasksched = 0; } if (dfs->ath_dfstest) { OS_CANCEL_TIMER(&dfs->ath_dfstesttimer); dfs->ath_dfstest = 0; } #if 0 #ifndef ATH_DFS_RADAR_DETECTION_ONLY if (dfs->ic_dfswait) { OS_CANCEL_TIMER(&dfs->ic_dfswaittimer); dfs->ath_dfswait = 0; } OS_CANCEL_TIMER(&dfs->sc_dfs_war_timer); if (dfs->dfs_nol != NULL) { struct dfs_nolelem *nol, *next; nol = dfs->dfs_nol; /* Bug 29099 - each NOL element has its own timer, cancel it and free the element*/ while (nol != NULL) { OS_CANCEL_TIMER(&nol->nol_timer); next = nol->nol_next; OS_FREE(nol); nol = next; } dfs->dfs_nol = NULL; } #endif #endif /* Return radar events to free q*/ dfs_reset_radarq(dfs); dfs_reset_alldelaylines(dfs); /* Free up pulse log*/ if (dfs->pulses != NULL) { OS_FREE(dfs->pulses); dfs->pulses = NULL; } for (n=0; n<DFS_MAX_RADAR_TYPES;n++) { if (dfs->dfs_radarf[n] != NULL) { OS_FREE(dfs->dfs_radarf[n]); dfs->dfs_radarf[n] = NULL; } } if (dfs->dfs_radartable != NULL) { for (n=0; n<256; n++) { if (dfs->dfs_radartable[n] != NULL) { OS_FREE(dfs->dfs_radartable[n]); dfs->dfs_radartable[n] = NULL; } } OS_FREE(dfs->dfs_radartable); dfs->dfs_radartable = NULL; #ifndef ATH_DFS_RADAR_DETECTION_ONLY dfs->ath_dfs_isdfsregdomain = 0; #endif } if (dfs->dfs_b5radars != NULL) { OS_FREE(dfs->dfs_b5radars); dfs->dfs_b5radars=NULL; } dfs_reset_ar(dfs); ATH_ARQ_LOCK(dfs); empty = STAILQ_EMPTY(&(dfs->dfs_arq)); ATH_ARQ_UNLOCK(dfs); if (!empty) { dfs_reset_arq(dfs); } if (dfs->events != NULL) { OS_FREE(dfs->events); dfs->events = NULL; } dfs_nol_timer_cleanup(dfs); OS_FREE(dfs); /* XXX? */ ic->ic_dfs = NULL; }
int dfs_radar_enable(struct ath_softc *sc) { struct ath_dfs *dfs=sc->sc_dfs; u_int32_t rfilt; HAL_CHANNEL *chan=&sc->sc_curchan; struct ath_hal *ah = sc->sc_ah; HAL_CHANNEL *ext_ch=ath_hal_get_extension_channel(ah); if (dfs == NULL) { DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: sc_dfs is NULL\n", __func__); return -EIO; } rfilt = ath_hal_getrxfilter(ah); if ((dfs->dfs_proc_phyerr & (DFS_RADAR_EN | DFS_AR_EN)) && (sc->sc_opmode == HAL_M_HOSTAP || sc->sc_opmode == HAL_M_IBSS)) { if (chan->privFlags & CHANNEL_DFS) { struct dfs_state *rs_pri=NULL, *rs_ext=NULL; u_int8_t index_pri, index_ext; HAL_PHYERR_PARAM pe; dfs->sc_dfs_cac_time = ATH_DFS_WAIT_MS; if (dfs->dfsdomain == DFS_ETSI_DOMAIN) { if(IS_CHANNEL_WEATHER_RADAR(chan->channel)) { dfs->sc_dfs_cac_time = ATH_DFS_WEATHER_CHANNEL_WAIT_MS; } else { if (ext_ch && IS_CHANNEL_WEATHER_RADAR(ext_ch->channel)) { dfs->sc_dfs_cac_time = ATH_DFS_WEATHER_CHANNEL_WAIT_MS; } } } if(dfs->sc_dfs_cac_time != ATH_DFS_WAIT_MS) printk("WARNING!!! 10 minute CAC period as channel is a weather radar channel\n"); /* Disable radar detection in case we need to setup * a new channel state and radars are somehow being * reported. Avoids locking problem. */ rfilt = ath_hal_getrxfilter(ah); rfilt &= ~HAL_RX_FILTER_PHYRADAR; ath_hal_setrxfilter(ah, rfilt); /* Enable strong signal fast antenna diversity */ ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, dfs->dfs_rinfo.rn_fastdivGCval, NULL); dfs_reset_alldelaylines(sc); rs_pri = dfs_getchanstate(sc, &index_pri, 0); if (ext_ch) { rs_ext = dfs_getchanstate(sc, &index_ext, 1); sc->sc_extchan = *ext_ch; } if (rs_pri != NULL && ((ext_ch==NULL)||(rs_ext != NULL))) { if (index_pri != dfs->dfs_curchan_radindex) dfs_reset_alldelaylines(sc); dfs->dfs_curchan_radindex = (int16_t) index_pri; if (rs_ext) dfs->dfs_extchan_radindex = (int16_t) index_ext; pe.pe_firpwr = rs_pri->rs_firpwr; pe.pe_rrssi = rs_pri->rs_radarrssi; pe.pe_height = rs_pri->rs_height; pe.pe_prssi = rs_pri->rs_pulserssi; pe.pe_inband = rs_pri->rs_inband; /* 5413 specific */ pe.pe_relpwr = rs_pri->rs_relpwr; pe.pe_relstep = rs_pri->rs_relstep; pe.pe_maxlen = rs_pri->rs_maxlen; /* Disable strong signal fast antenna diversity */ ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, 1, NULL); ath_hal_enabledfs(sc->sc_ah, &pe); rfilt |= HAL_RX_FILTER_PHYRADAR; ath_hal_setrxfilter(ah, rfilt); DFS_DPRINTK(sc, ATH_DEBUG_DFS, "Enabled radar detection on channel %d\n", chan->channel); dfs->dur_multiplier = (ath_hal_is_fast_clock_enabled(sc->sc_ah) ? (DFS_FAST_CLOCK_MULTIPLIER) : (DFS_NO_FAST_CLOCK_MULTIPLIER)); DFS_DPRINTK(sc, ATH_DEBUG_DFS3, "%s: duration multiplier is %d\n", __func__, dfs->dur_multiplier); /* * Fast antenna diversity for strong signals disturbs * radar detection of 1-2us pusles. Enable fast diveristy * but disable the strong signal aspect of it */ if (ath_hal_getcapability(ah, HAL_CAP_DIVERSITY, 1, NULL) == HAL_OK) { ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, 0, NULL); } } else DFS_DPRINTK(sc, ATH_DEBUG_DFS, "%s: No more radar states left\n", __func__); } else { if (!(chan->channelFlags & CHANNEL_2GHZ)) { /* Enable strong signal fast antenna diversity */ ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, dfs->dfs_rinfo.rn_fastdivGCval, NULL); /* Disable Radar if not 2GHZ channel and not DFS */ rfilt &= ~HAL_RX_FILTER_PHYRADAR; ath_hal_setrxfilter(ah, rfilt); } } } else { /* Enable strong signal fast antenna diversity */ ath_hal_setcapability(ah, HAL_CAP_DIVERSITY, HAL_CAP_STRONG_DIV, dfs->dfs_rinfo.rn_fastdivGCval, NULL); /* Disable Radar if RADAR or AR not enabled */ rfilt &= ~HAL_RX_FILTER_PHYRADAR; ath_hal_setrxfilter(ah, rfilt); } return 0; }
int dfs_init_radar_filters_host( struct ath_dfs_host *dfs, struct ath_dfs_info *dfs_info) { u_int32_t T, Tmax; int numpulses,p,n, i; struct dfs_filtertype *ft = NULL; struct dfs_filter *rf=NULL; struct dfs_pulse *dfs_radars; struct dfs_bin5pulse *b5pulses; int32_t min_rssithresh=DFS_MAX_RSSI_VALUE; u_int32_t max_pulsedur=0; u_int32_t numb5radars; u_int32_t numradars; dfs_radars = dfs_get_radars(dfs_info->dfs_domain, &numradars, &b5pulses, &numb5radars); /* If DFS not enabled return immediately.*/ if (!dfs_radars) { return 0; } dfs->dfs_rinfo.rn_numradars = 0; /* Clear filter type table */ for (n=0; n<256; n++) { for (i=0;i<DFS_MAX_RADAR_OVERLAP; i++) (dfs->dfs_radartable[n])[i] = -1; } /* Now, initialize the radar filters */ for (p=0; p < numradars; p++) { ft = NULL; for (n=0; n<dfs->dfs_rinfo.rn_numradars; n++) { if ((dfs_radars[p].rp_pulsedur == dfs->dfs_radarf[n]->ft_filterdur) && (dfs_radars[p].rp_numpulses == dfs->dfs_radarf[n]->ft_numpulses) && (dfs_radars[p].rp_mindur == dfs->dfs_radarf[n]->ft_mindur) && (dfs_radars[p].rp_maxdur == dfs->dfs_radarf[n]->ft_maxdur)) { ft = dfs->dfs_radarf[n]; break; } } if (ft == NULL) { /* No filter of the appropriate dur was found */ if ((dfs->dfs_rinfo.rn_numradars+1) >DFS_MAX_RADAR_TYPES) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: Too many filter types\n", __func__); goto bad4; } ft = dfs->dfs_radarf[dfs->dfs_rinfo.rn_numradars]; ft->ft_numfilters = 0; ft->ft_numpulses = dfs_radars[p].rp_numpulses; ft->ft_patterntype = dfs_radars[p].rp_patterntype; ft->ft_mindur = dfs_radars[p].rp_mindur; ft->ft_maxdur = dfs_radars[p].rp_maxdur; ft->ft_filterdur = dfs_radars[p].rp_pulsedur; ft->ft_rssithresh = dfs_radars[p].rp_rssithresh; ft->ft_rssimargin = dfs_radars[p].rp_rssimargin; ft->ft_minpri = 1000000; if (ft->ft_rssithresh < min_rssithresh) min_rssithresh = ft->ft_rssithresh; if (ft->ft_maxdur > max_pulsedur) max_pulsedur = ft->ft_maxdur; for (i=ft->ft_mindur; i<=ft->ft_maxdur; i++) { u_int32_t stop=0,tableindex=0; while ((tableindex < DFS_MAX_RADAR_OVERLAP) && (!stop)) { if ((dfs->dfs_radartable[i])[tableindex] == -1) stop = 1; else tableindex++; } if (stop) { (dfs->dfs_radartable[i])[tableindex] = (int8_t) (dfs->dfs_rinfo.rn_numradars); } else { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: Too many overlapping radar filters\n", __func__); goto bad4; } } dfs->dfs_rinfo.rn_numradars++; } rf = &(ft->ft_filters[ft->ft_numfilters++]); dfs_reset_delayline(&rf->rf_dl); numpulses = dfs_radars[p].rp_numpulses; rf->rf_numpulses = numpulses; rf->rf_patterntype = dfs_radars[p].rp_patterntype; rf->rf_pulseid = dfs_radars[p].rp_pulseid; rf->rf_mindur = dfs_radars[p].rp_mindur; rf->rf_maxdur = dfs_radars[p].rp_maxdur; rf->rf_numpulses = dfs_radars[p].rp_numpulses; T = (100000000/dfs_radars[p].rp_max_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_minpri = dfs_round((int32_t)T - (100*(dfs_radars[p].rp_pulsevar))); Tmax = (100000000/dfs_radars[p].rp_pulsefreq) - 100*(dfs_radars[p].rp_meanoffset); rf->rf_maxpri = dfs_round((int32_t)Tmax + (100*(dfs_radars[p].rp_pulsevar))); if( rf->rf_minpri < ft->ft_minpri ) ft->ft_minpri = rf->rf_minpri; rf->rf_threshold = dfs_radars[p].rp_threshold; rf->rf_filterlen = rf->rf_maxpri * rf->rf_numpulses; DFS_DPRINTK(dfs, ATH_DEBUG_DFS2, "minprf = %d maxprf = %d pulsevar = %d thresh=%d\n", dfs_radars[p].rp_pulsefreq, dfs_radars[p].rp_max_pulsefreq, dfs_radars[p].rp_pulsevar, rf->rf_threshold); DFS_DPRINTK(dfs, ATH_DEBUG_DFS2, "minpri = %d maxpri = %d filterlen = %d filterID = %d\n", rf->rf_minpri, rf->rf_maxpri, rf->rf_filterlen, rf->rf_pulseid); } #ifdef DFS_DEBUG dfs_print_filters(dfs); #endif dfs->dfs_rinfo.rn_numbin5radars = numb5radars; if ( dfs->dfs_b5radars == NULL ) { dfs->dfs_b5radars = (struct dfs_bin5radars *)DFS_MALLOC(dfs->os_hdl, numb5radars * sizeof(struct dfs_bin5radars)); if (dfs->dfs_b5radars == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: cannot allocate memory for bin5 radars\n", __func__); goto bad4; } } for (n=0; n<numb5radars; n++) { dfs->dfs_b5radars[n].br_pulse = b5pulses[n]; dfs->dfs_b5radars[n].br_pulse.b5_timewindow *= 1000000; if (dfs->dfs_b5radars[n].br_pulse.b5_rssithresh < min_rssithresh) min_rssithresh = dfs->dfs_b5radars[n].br_pulse.b5_rssithresh; if (dfs->dfs_b5radars[n].br_pulse.b5_maxdur > max_pulsedur ) max_pulsedur = dfs->dfs_b5radars[n].br_pulse.b5_maxdur; } dfs_reset_alldelaylines(dfs); dfs_reset_radarq(dfs); DFS_SET_MINRSSITHRESH(dfs->dev_hdl, min_rssithresh); DFS_SET_MAXPULSEDUR(dfs->dev_hdl, dfs_round((int32_t)((max_pulsedur*100/80)*100))); return 0; bad4: for (n=0; n<ft->ft_numfilters; n++) { rf = &(ft->ft_filters[n]); } return 1; }
/* * This is called each time a channel change occurs, to (potentially) enable * the radar code. */ int dfs_radar_enable(struct ieee80211com *ic, struct ath_dfs_radar_tab_info *radar_info) { int is_ext_ch; int is_fastclk = 0; int radar_filters_init_status = 0; //u_int32_t rfilt; struct ath_dfs *dfs; struct dfs_state *rs_pri, *rs_ext; struct ieee80211_channel *chan=ic->ic_curchan, *ext_ch = NULL; is_ext_ch=IEEE80211_IS_CHAN_11N_HT40(ic->ic_curchan); dfs=(struct ath_dfs *)ic->ic_dfs; rs_pri = NULL; rs_ext = NULL; #if 0 int i; #endif if (dfs == NULL) { DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: ic_dfs is NULL\n", __func__); return -EIO; } ic->ic_dfs_disable(ic); /* * Setting country code might change the DFS domain * so initialize the DFS Radar filters */ radar_filters_init_status = dfs_init_radar_filters(ic, radar_info); /* * dfs_init_radar_filters() returns 1 on failure and * 0 on success. */ if ( DFS_STATUS_FAIL == radar_filters_init_status ) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s[%d]: DFS Radar Filters Initialization Failed", __func__, __LINE__); return -EIO; } if ((ic->ic_opmode == IEEE80211_M_HOSTAP || ic->ic_opmode == IEEE80211_M_IBSS)) { if (IEEE80211_IS_CHAN_DFS(chan)) { u_int8_t index_pri, index_ext; #ifdef ATH_ENABLE_AR dfs->dfs_proc_phyerr |= DFS_AR_EN; #endif dfs->dfs_proc_phyerr |= DFS_RADAR_EN; if (is_ext_ch) { ext_ch = ieee80211_get_extchan(ic); } dfs_reset_alldelaylines(dfs); rs_pri = dfs_getchanstate(dfs, &index_pri, 0); if (ext_ch) { rs_ext = dfs_getchanstate(dfs, &index_ext, 1); } if (rs_pri != NULL && ((ext_ch==NULL)||(rs_ext != NULL))) { struct ath_dfs_phyerr_param pe; OS_MEMSET(&pe, '\0', sizeof(pe)); if (index_pri != dfs->dfs_curchan_radindex) dfs_reset_alldelaylines(dfs); dfs->dfs_curchan_radindex = (int16_t) index_pri; dfs->dfs_pri_multiplier_ini = radar_info->dfs_pri_multiplier; if (rs_ext) dfs->dfs_extchan_radindex = (int16_t) index_ext; ath_dfs_phyerr_param_copy(&pe, &rs_pri->rs_param); DFS_DPRINTK(dfs, ATH_DEBUG_DFS3, "%s: firpwr=%d, rssi=%d, height=%d, " "prssi=%d, inband=%d, relpwr=%d, " "relstep=%d, maxlen=%d\n", __func__, pe.pe_firpwr, pe.pe_rrssi, pe.pe_height, pe.pe_prssi, pe.pe_inband, pe.pe_relpwr, pe.pe_relstep, pe.pe_maxlen ); ic->ic_dfs_enable(ic, &is_fastclk, &pe); DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "Enabled radar detection on channel %d\n", chan->ic_freq); dfs->dur_multiplier = is_fastclk ? DFS_FAST_CLOCK_MULTIPLIER : DFS_NO_FAST_CLOCK_MULTIPLIER; DFS_DPRINTK(dfs, ATH_DEBUG_DFS3, "%s: duration multiplier is %d\n", __func__, dfs->dur_multiplier); } else DFS_DPRINTK(dfs, ATH_DEBUG_DFS, "%s: No more radar states left\n", __func__); } } return DFS_STATUS_SUCCESS; }