/* 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;
}
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);
}
}
/*
* 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 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;
}
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_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;
}
