/*
* Parse the radar summary frame.
*
* The frame contents _minus_ the TLV are passed in.
*/
static void
radar_summary_parse(struct ath_dfs *dfs, const char *buf, size_t len,
struct rx_radar_status *rsu)
{
uint32_t rs[2];
/* Drop out if we have < 2 DWORDs available */
if (len < sizeof(rs)) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR |
ATH_DEBUG_DFS_PHYERR_SUM,
"%s: len (%d) < expected (%d)!\n",
__func__,
len,
sizeof(rs));
}
/*
* Since the TLVs may be unaligned for some reason
* we take a private copy into aligned memory.
* This enables us to use the HAL-like accessor macros
* into the DWORDs to access sub-DWORD fields.
*/
OS_MEMCPY(rs, buf, sizeof(rs));
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,"%s: two 32 bit values are: %08x %08x\n", __func__, rs[0], rs[1]);
// DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR, "%s (p=%p):\n", __func__, buf);
/* Populate the fields from the summary report */
rsu->tsf_offset =
MS(rs[RADAR_REPORT_PULSE_REG_2], RADAR_REPORT_PULSE_TSF_OFFSET);
rsu->pulse_duration =
MS(rs[RADAR_REPORT_PULSE_REG_2], RADAR_REPORT_PULSE_DUR);
rsu->is_chirp =
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_IS_CHIRP);
rsu->sidx = sign_extend_32(
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_SIDX),
10);
rsu->freq_offset =
calc_freq_offset(rsu->sidx, PERE_IS_OVERSAMPLING(dfs));
/* These are only relevant if the pulse is a chirp */
rsu->delta_peak = sign_extend_32(
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_DELTA_PEAK),
6);
rsu->delta_diff =
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_DELTA_DIFF);
}
/*
* Parse the radar summary frame.
*
* The frame contents _minus_ the TLV are passed in.
*/
static void
radar_summary_parse(struct ath_dfs *dfs, const char *buf, size_t len,
struct rx_radar_status *rsu)
{
uint32_t rs[2];
int freq_centre, freq;
/* Drop out if we have < 2 DWORDs available */
if (len < sizeof(rs)) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR |
ATH_DEBUG_DFS_PHYERR_SUM,
"%s: len (%zu) < expected (%zu)!",
__func__,
len,
sizeof(rs));
}
/*
* Since the TLVs may be unaligned for some reason
* we take a private copy into aligned memory.
* This enables us to use the HAL-like accessor macros
* into the DWORDs to access sub-DWORD fields.
*/
OS_MEMCPY(rs, buf, sizeof(rs));
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,"%s: two 32 bit values are: %08x %08x", __func__, rs[0], rs[1]);
// DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR, "%s (p=%p):", __func__, buf);
/* Populate the fields from the summary report */
rsu->tsf_offset =
MS(rs[RADAR_REPORT_PULSE_REG_2], RADAR_REPORT_PULSE_TSF_OFFSET);
rsu->pulse_duration =
MS(rs[RADAR_REPORT_PULSE_REG_2], RADAR_REPORT_PULSE_DUR);
rsu->is_chirp =
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_IS_CHIRP);
rsu->sidx = sign_extend_32(
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_SIDX),
10);
rsu->freq_offset =
calc_freq_offset(rsu->sidx, PERE_IS_OVERSAMPLING(dfs));
/* These are only relevant if the pulse is a chirp */
rsu->delta_peak = sign_extend_32(
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_DELTA_PEAK),
6);
rsu->delta_diff =
MS(rs[RADAR_REPORT_PULSE_REG_1], RADAR_REPORT_PULSE_DELTA_DIFF);
/* WAR for FCC Type 4*/
/*
* HW is giving longer pulse duration (in case of VHT80, with traffic)
* which fails to detect FCC type4 radar pulses. Added a work around to
* fix the pulse duration and duration delta.
*
* IF VHT80
* && (primary_channel==30MHz || primary_channel== -30MHz)
* && -4 <= pulse_index <= 4
* && !chirp
* && pulse duration > 20 us
* THEN
* Set pulse duration to 20 us
*/
freq = ieee80211_chan2freq(dfs->ic, dfs->ic->ic_curchan);
freq_centre = dfs->ic->ic_curchan->ic_vhtop_ch_freq_seg1;
if ((IEEE80211_IS_CHAN_11AC_VHT80(dfs->ic->ic_curchan) &&
(abs(freq - freq_centre) == 30) &&
!rsu->is_chirp &&
abs(rsu->sidx) <= 4 &&
rsu->pulse_duration > 20)){
rsu->pulse_duration = 20;
}
}