ath9k: Cleanup spectral scan code (f65c0825) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/net/wireless/ath/ath9k/Makefile

+3 −1

Original line number	Diff line number	Diff line
		@@ -11,12 +11,14 @@ ath9k-$(CONFIG_ATH9K_BTCOEX_SUPPORT) += mci.o
		ath9k-$(CONFIG_ATH9K_LEGACY_RATE_CONTROL) += rc.o
		ath9k-$(CONFIG_ATH9K_PCI) += pci.o
		ath9k-$(CONFIG_ATH9K_AHB) += ahb.o
		ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o
		ath9k-$(CONFIG_ATH9K_DFS_DEBUGFS) += dfs_debug.o
		ath9k-$(CONFIG_ATH9K_DFS_CERTIFIED) += dfs.o
		ath9k-$(CONFIG_ATH9K_TX99) += tx99.o
		ath9k-$(CONFIG_ATH9K_WOW) += wow.o

		ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o \
		spectral.o

		obj-$(CONFIG_ATH9K) += ath9k.o

		ath9k_hw-y:= \

drivers/net/wireless/ath/ath9k/ath9k.h

+1 −178

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@
		#include "common.h"
		#include "mci.h"
		#include "dfs.h"
		#include "spectral.h"

		/*
		* Header for the ath9k.ko driver core only -- hw code nor any other driver
		@@ -716,23 +717,6 @@ struct ath9k_vif_iter_data {
		int nadhocs; /* number of adhoc vifs */
		};

		/* enum spectral_mode:
		*
		* @SPECTRAL_DISABLED: spectral mode is disabled
		* @SPECTRAL_BACKGROUND: hardware sends samples when it is not busy with
		* something else.
		* @SPECTRAL_MANUAL: spectral scan is enabled, triggering for samples
		* is performed manually.
		* @SPECTRAL_CHANSCAN: Like manual, but also triggered when changing channels
		* during a channel scan.
		*/
		enum spectral_mode {
		SPECTRAL_DISABLED = 0,
		SPECTRAL_BACKGROUND,
		SPECTRAL_MANUAL,
		SPECTRAL_CHANSCAN,
		};

		struct ath_softc {
		struct ieee80211_hw *hw;
		struct device *dev;
		@@ -822,162 +806,6 @@ struct ath_softc {
		#endif
		};

		#define SPECTRAL_SCAN_BITMASK 0x10
		/* Radar info packet format, used for DFS and spectral formats. */
		struct ath_radar_info {
		u8 pulse_length_pri;
		u8 pulse_length_ext;
		u8 pulse_bw_info;
		} __packed;

		/* The HT20 spectral data has 4 bytes of additional information at it's end.
		*
		* [7:0]: all bins {max_magnitude[1:0], bitmap_weight[5:0]}
		* [7:0]: all bins max_magnitude[9:2]
		* [7:0]: all bins {max_index[5:0], max_magnitude[11:10]}
		* [3:0]: max_exp (shift amount to size max bin to 8-bit unsigned)
		*/
		struct ath_ht20_mag_info {
		u8 all_bins[3];
		u8 max_exp;
		} __packed;

		#define SPECTRAL_HT20_NUM_BINS 56

		/* WARNING: don't actually use this struct! MAC may vary the amount of
		* data by -1/+2. This struct is for reference only.
		*/
		struct ath_ht20_fft_packet {
		u8 data[SPECTRAL_HT20_NUM_BINS];
		struct ath_ht20_mag_info mag_info;
		struct ath_radar_info radar_info;
		} __packed;

		#define SPECTRAL_HT20_TOTAL_DATA_LEN (sizeof(struct ath_ht20_fft_packet))

		/* Dynamic 20/40 mode:
		*
		* [7:0]: lower bins {max_magnitude[1:0], bitmap_weight[5:0]}
		* [7:0]: lower bins max_magnitude[9:2]
		* [7:0]: lower bins {max_index[5:0], max_magnitude[11:10]}
		* [7:0]: upper bins {max_magnitude[1:0], bitmap_weight[5:0]}
		* [7:0]: upper bins max_magnitude[9:2]
		* [7:0]: upper bins {max_index[5:0], max_magnitude[11:10]}
		* [3:0]: max_exp (shift amount to size max bin to 8-bit unsigned)
		*/
		struct ath_ht20_40_mag_info {
		u8 lower_bins[3];
		u8 upper_bins[3];
		u8 max_exp;
		} __packed;

		#define SPECTRAL_HT20_40_NUM_BINS 128

		/* WARNING: don't actually use this struct! MAC may vary the amount of
		* data. This struct is for reference only.
		*/
		struct ath_ht20_40_fft_packet {
		u8 data[SPECTRAL_HT20_40_NUM_BINS];
		struct ath_ht20_40_mag_info mag_info;
		struct ath_radar_info radar_info;
		} __packed;


		#define SPECTRAL_HT20_40_TOTAL_DATA_LEN (sizeof(struct ath_ht20_40_fft_packet))

		/* grabs the max magnitude from the all/upper/lower bins */
		static inline u16 spectral_max_magnitude(u8 *bins)
		{
		return (bins[0] & 0xc0) >> 6 \|
		(bins[1] & 0xff) << 2 \|
		(bins[2] & 0x03) << 10;
		}

		/* return the max magnitude from the all/upper/lower bins */
		static inline u8 spectral_max_index(u8 *bins)
		{
		s8 m = (bins[2] & 0xfc) >> 2;

		/* TODO: this still doesn't always report the right values ... */
		if (m > 32)
		m \|= 0xe0;
		else
		m &= ~0xe0;

		return m + 29;
		}

		/* return the bitmap weight from the all/upper/lower bins */
		static inline u8 spectral_bitmap_weight(u8 *bins)
		{
		return bins[0] & 0x3f;
		}

		/* FFT sample format given to userspace via debugfs.
		*
		* Please keep the type/length at the front position and change
		* other fields after adding another sample type
		*
		* TODO: this might need rework when switching to nl80211-based
		* interface.
		*/
		enum ath_fft_sample_type {
		ATH_FFT_SAMPLE_HT20 = 1,
		ATH_FFT_SAMPLE_HT20_40,
		};

		struct fft_sample_tlv {
		u8 type; /* see ath_fft_sample */
		__be16 length;
		/* type dependent data follows */
		} __packed;

		struct fft_sample_ht20 {
		struct fft_sample_tlv tlv;

		u8 max_exp;

		__be16 freq;
		s8 rssi;
		s8 noise;

		__be16 max_magnitude;
		u8 max_index;
		u8 bitmap_weight;

		__be64 tsf;

		u8 data[SPECTRAL_HT20_NUM_BINS];
		} __packed;

		struct fft_sample_ht20_40 {
		struct fft_sample_tlv tlv;

		u8 channel_type;
		__be16 freq;

		s8 lower_rssi;
		s8 upper_rssi;

		__be64 tsf;

		s8 lower_noise;
		s8 upper_noise;

		__be16 lower_max_magnitude;
		__be16 upper_max_magnitude;

		u8 lower_max_index;
		u8 upper_max_index;

		u8 lower_bitmap_weight;
		u8 upper_bitmap_weight;

		u8 max_exp;

		u8 data[SPECTRAL_HT20_40_NUM_BINS];
		} __packed;

		/********/
		/* TX99 */
		/********/
		@@ -1022,11 +850,6 @@ void ath9k_deinit_device(struct ath_softc *sc);
		void ath9k_set_hw_capab(struct ath_softc sc, struct ieee80211_hw hw);
		void ath9k_reload_chainmask_settings(struct ath_softc *sc);

		void ath9k_spectral_scan_trigger(struct ieee80211_hw *hw);
		int ath9k_spectral_scan_config(struct ieee80211_hw *hw,
		enum spectral_mode spectral_mode);


		#ifdef CONFIG_ATH9K_PCI
		int ath_pci_init(void);
		void ath_pci_exit(void);

drivers/net/wireless/ath/ath9k/debug.c

+2 −309

Original line number	Diff line number	Diff line
		@@ -17,7 +17,6 @@
		#include <linux/slab.h>
		#include <linux/vmalloc.h>
		#include <linux/export.h>
		#include <linux/relay.h>
		#include <asm/unaligned.h>

		#include "ath9k.h"
		@@ -1016,293 +1015,6 @@ static const struct file_operations fops_recv = {
		.llseek = default_llseek,
		};

		static ssize_t read_file_spec_scan_ctl(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		char *mode = "";
		unsigned int len;

		switch (sc->spectral_mode) {
		case SPECTRAL_DISABLED:
		mode = "disable";
		break;
		case SPECTRAL_BACKGROUND:
		mode = "background";
		break;
		case SPECTRAL_CHANSCAN:
		mode = "chanscan";
		break;
		case SPECTRAL_MANUAL:
		mode = "manual";
		break;
		}
		len = strlen(mode);
		return simple_read_from_buffer(user_buf, count, ppos, mode, len);
		}

		static ssize_t write_file_spec_scan_ctl(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		struct ath_common *common = ath9k_hw_common(sc->sc_ah);
		char buf[32];
		ssize_t len;

		if (config_enabled(CONFIG_ATH9K_TX99))
		return -EOPNOTSUPP;

		len = min(count, sizeof(buf) - 1);
		if (copy_from_user(buf, user_buf, len))
		return -EFAULT;

		buf[len] = '\0';

		if (strncmp("trigger", buf, 7) == 0) {
		ath9k_spectral_scan_trigger(sc->hw);
		} else if (strncmp("background", buf, 9) == 0) {
		ath9k_spectral_scan_config(sc->hw, SPECTRAL_BACKGROUND);
		ath_dbg(common, CONFIG, "spectral scan: background mode enabled\n");
		} else if (strncmp("chanscan", buf, 8) == 0) {
		ath9k_spectral_scan_config(sc->hw, SPECTRAL_CHANSCAN);
		ath_dbg(common, CONFIG, "spectral scan: channel scan mode enabled\n");
		} else if (strncmp("manual", buf, 6) == 0) {
		ath9k_spectral_scan_config(sc->hw, SPECTRAL_MANUAL);
		ath_dbg(common, CONFIG, "spectral scan: manual mode enabled\n");
		} else if (strncmp("disable", buf, 7) == 0) {
		ath9k_spectral_scan_config(sc->hw, SPECTRAL_DISABLED);
		ath_dbg(common, CONFIG, "spectral scan: disabled\n");
		} else {
		return -EINVAL;
		}

		return count;
		}

		static const struct file_operations fops_spec_scan_ctl = {
		.read = read_file_spec_scan_ctl,
		.write = write_file_spec_scan_ctl,
		.open = simple_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static ssize_t read_file_spectral_short_repeat(struct file *file,
		char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		char buf[32];
		unsigned int len;

		len = sprintf(buf, "%d\n", sc->spec_config.short_repeat);
		return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		}

		static ssize_t write_file_spectral_short_repeat(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		unsigned long val;
		char buf[32];
		ssize_t len;

		len = min(count, sizeof(buf) - 1);
		if (copy_from_user(buf, user_buf, len))
		return -EFAULT;

		buf[len] = '\0';
		if (kstrtoul(buf, 0, &val))
		return -EINVAL;

		if (val < 0 \|\| val > 1)
		return -EINVAL;

		sc->spec_config.short_repeat = val;
		return count;
		}

		static const struct file_operations fops_spectral_short_repeat = {
		.read = read_file_spectral_short_repeat,
		.write = write_file_spectral_short_repeat,
		.open = simple_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static ssize_t read_file_spectral_count(struct file *file,
		char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		char buf[32];
		unsigned int len;

		len = sprintf(buf, "%d\n", sc->spec_config.count);
		return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		}

		static ssize_t write_file_spectral_count(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		unsigned long val;
		char buf[32];
		ssize_t len;

		len = min(count, sizeof(buf) - 1);
		if (copy_from_user(buf, user_buf, len))
		return -EFAULT;

		buf[len] = '\0';
		if (kstrtoul(buf, 0, &val))
		return -EINVAL;

		if (val < 0 \|\| val > 255)
		return -EINVAL;

		sc->spec_config.count = val;
		return count;
		}

		static const struct file_operations fops_spectral_count = {
		.read = read_file_spectral_count,
		.write = write_file_spectral_count,
		.open = simple_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static ssize_t read_file_spectral_period(struct file *file,
		char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		char buf[32];
		unsigned int len;

		len = sprintf(buf, "%d\n", sc->spec_config.period);
		return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		}

		static ssize_t write_file_spectral_period(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		unsigned long val;
		char buf[32];
		ssize_t len;

		len = min(count, sizeof(buf) - 1);
		if (copy_from_user(buf, user_buf, len))
		return -EFAULT;

		buf[len] = '\0';
		if (kstrtoul(buf, 0, &val))
		return -EINVAL;

		if (val < 0 \|\| val > 255)
		return -EINVAL;

		sc->spec_config.period = val;
		return count;
		}

		static const struct file_operations fops_spectral_period = {
		.read = read_file_spectral_period,
		.write = write_file_spectral_period,
		.open = simple_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static ssize_t read_file_spectral_fft_period(struct file *file,
		char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		char buf[32];
		unsigned int len;

		len = sprintf(buf, "%d\n", sc->spec_config.fft_period);
		return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		}

		static ssize_t write_file_spectral_fft_period(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		unsigned long val;
		char buf[32];
		ssize_t len;

		len = min(count, sizeof(buf) - 1);
		if (copy_from_user(buf, user_buf, len))
		return -EFAULT;

		buf[len] = '\0';
		if (kstrtoul(buf, 0, &val))
		return -EINVAL;

		if (val < 0 \|\| val > 15)
		return -EINVAL;

		sc->spec_config.fft_period = val;
		return count;
		}

		static const struct file_operations fops_spectral_fft_period = {
		.read = read_file_spectral_fft_period,
		.write = write_file_spectral_fft_period,
		.open = simple_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static struct dentry create_buf_file_handler(const char filename,
		struct dentry *parent,
		umode_t mode,
		struct rchan_buf *buf,
		int *is_global)
		{
		struct dentry *buf_file;

		buf_file = debugfs_create_file(filename, mode, parent, buf,
		&relay_file_operations);
		*is_global = 1;
		return buf_file;
		}

		static int remove_buf_file_handler(struct dentry *dentry)
		{
		debugfs_remove(dentry);

		return 0;
		}

		void ath_debug_send_fft_sample(struct ath_softc *sc,
		struct fft_sample_tlv *fft_sample_tlv)
		{
		int length;
		if (!sc->rfs_chan_spec_scan)
		return;

		length = __be16_to_cpu(fft_sample_tlv->length) +
		sizeof(*fft_sample_tlv);
		relay_write(sc->rfs_chan_spec_scan, fft_sample_tlv, length);
		}

		static struct rchan_callbacks rfs_spec_scan_cb = {
		.create_buf_file = create_buf_file_handler,
		.remove_buf_file = remove_buf_file_handler,
		};


		static ssize_t read_file_regidx(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		@@ -1772,10 +1484,7 @@ void ath9k_get_et_stats(struct ieee80211_hw *hw,

		void ath9k_deinit_debug(struct ath_softc *sc)
		{
		if (config_enabled(CONFIG_ATH9K_DEBUGFS) && sc->rfs_chan_spec_scan) {
		relay_close(sc->rfs_chan_spec_scan);
		sc->rfs_chan_spec_scan = NULL;
		}
		ath9k_spectral_deinit_debug(sc);
		}

		int ath9k_init_debug(struct ath_hw *ah)
		@@ -1795,6 +1504,7 @@ int ath9k_init_debug(struct ath_hw *ah)

		ath9k_dfs_init_debug(sc);
		ath9k_tx99_init_debug(sc);
		ath9k_spectral_init_debug(sc);

		debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
		&fops_dma);
		@@ -1841,23 +1551,6 @@ int ath9k_init_debug(struct ath_hw *ah)
		&fops_base_eeprom);
		debugfs_create_file("modal_eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
		&fops_modal_eeprom);
		sc->rfs_chan_spec_scan = relay_open("spectral_scan",
		sc->debug.debugfs_phy,
		1024, 256, &rfs_spec_scan_cb,
		NULL);
		debugfs_create_file("spectral_scan_ctl", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, sc,
		&fops_spec_scan_ctl);
		debugfs_create_file("spectral_short_repeat", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, sc,
		&fops_spectral_short_repeat);
		debugfs_create_file("spectral_count", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, sc, &fops_spectral_count);
		debugfs_create_file("spectral_period", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, sc, &fops_spectral_period);
		debugfs_create_file("spectral_fft_period", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, sc,
		&fops_spectral_fft_period);
		debugfs_create_u32("gpio_mask", S_IRUSR \| S_IWUSR,
		sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
		debugfs_create_u32("gpio_val", S_IRUSR \| S_IWUSR,

drivers/net/wireless/ath/ath9k/debug.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -292,8 +292,6 @@ void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif,
		struct ieee80211_sta *sta,
		struct dentry *dir);
		void ath_debug_send_fft_sample(struct ath_softc *sc,
		struct fft_sample_tlv *fft_sample);
		void ath9k_debug_stat_ant(struct ath_softc *sc,
		struct ath_hw_antcomb_conf *div_ant_conf,
		int main_rssi_avg, int alt_rssi_avg);

drivers/net/wireless/ath/ath9k/recv.c

+0 −181

Original line number	Diff line number	Diff line
		@@ -15,7 +15,6 @@
		*/

		#include <linux/dma-mapping.h>
		#include <linux/relay.h>
		#include "ath9k.h"
		#include "ar9003_mac.h"

		@@ -975,186 +974,6 @@ static void ath9k_process_tsf(struct ath_rx_status *rs,
		rxs->mactime += 0x100000000ULL;
		}

		#ifdef CONFIG_ATH9K_DEBUGFS
		static s8 fix_rssi_inv_only(u8 rssi_val)
		{
		if (rssi_val == 128)
		rssi_val = 0;
		return (s8) rssi_val;
		}
		#endif

		/* returns 1 if this was a spectral frame, even if not handled. */
		static int ath_process_fft(struct ath_softc sc, struct ieee80211_hdr hdr,
		struct ath_rx_status *rs, u64 tsf)
		{
		#ifdef CONFIG_ATH9K_DEBUGFS
		struct ath_hw *ah = sc->sc_ah;
		u8 num_bins, bins, vdata = (u8 *)hdr;
		struct fft_sample_ht20 fft_sample_20;
		struct fft_sample_ht20_40 fft_sample_40;
		struct fft_sample_tlv *tlv;
		struct ath_radar_info *radar_info;
		int len = rs->rs_datalen;
		int dc_pos;
		u16 fft_len, length, freq = ah->curchan->chan->center_freq;
		enum nl80211_channel_type chan_type;

		/* AR9280 and before report via ATH9K_PHYERR_RADAR, AR93xx and newer
		* via ATH9K_PHYERR_SPECTRAL. Haven't seen ATH9K_PHYERR_FALSE_RADAR_EXT
		* yet, but this is supposed to be possible as well.
		*/
		if (rs->rs_phyerr != ATH9K_PHYERR_RADAR &&
		rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT &&
		rs->rs_phyerr != ATH9K_PHYERR_SPECTRAL)
		return 0;

		/* check if spectral scan bit is set. This does not have to be checked
		* if received through a SPECTRAL phy error, but shouldn't hurt.
		*/
		radar_info = ((struct ath_radar_info *)&vdata[len]) - 1;
		if (!(radar_info->pulse_bw_info & SPECTRAL_SCAN_BITMASK))
		return 0;

		chan_type = cfg80211_get_chandef_type(&sc->hw->conf.chandef);
		if ((chan_type == NL80211_CHAN_HT40MINUS) \|\|
		(chan_type == NL80211_CHAN_HT40PLUS)) {
		fft_len = SPECTRAL_HT20_40_TOTAL_DATA_LEN;
		num_bins = SPECTRAL_HT20_40_NUM_BINS;
		bins = (u8 *)fft_sample_40.data;
		} else {
		fft_len = SPECTRAL_HT20_TOTAL_DATA_LEN;
		num_bins = SPECTRAL_HT20_NUM_BINS;
		bins = (u8 *)fft_sample_20.data;
		}

		/* Variation in the data length is possible and will be fixed later */
		if ((len > fft_len + 2) \|\| (len < fft_len - 1))
		return 1;

		switch (len - fft_len) {
		case 0:
		/* length correct, nothing to do. */
		memcpy(bins, vdata, num_bins);
		break;
		case -1:
		/* first byte missing, duplicate it. */
		memcpy(&bins[1], vdata, num_bins - 1);
		bins[0] = vdata[0];
		break;
		case 2:
		/* MAC added 2 extra bytes at bin 30 and 32, remove them. */
		memcpy(bins, vdata, 30);
		bins[30] = vdata[31];
		memcpy(&bins[31], &vdata[33], num_bins - 31);
		break;
		case 1:
		/* MAC added 2 extra bytes AND first byte is missing. */
		bins[0] = vdata[0];
		memcpy(&bins[1], vdata, 30);
		bins[31] = vdata[31];
		memcpy(&bins[32], &vdata[33], num_bins - 32);
		break;
		default:
		return 1;
		}

		/* DC value (value in the middle) is the blind spot of the spectral
		* sample and invalid, interpolate it.
		*/
		dc_pos = num_bins / 2;
		bins[dc_pos] = (bins[dc_pos + 1] + bins[dc_pos - 1]) / 2;

		if ((chan_type == NL80211_CHAN_HT40MINUS) \|\|
		(chan_type == NL80211_CHAN_HT40PLUS)) {
		s8 lower_rssi, upper_rssi;
		s16 ext_nf;
		u8 lower_max_index, upper_max_index;
		u8 lower_bitmap_w, upper_bitmap_w;
		u16 lower_mag, upper_mag;
		struct ath9k_hw_cal_data *caldata = ah->caldata;
		struct ath_ht20_40_mag_info *mag_info;

		if (caldata)
		ext_nf = ath9k_hw_getchan_noise(ah, ah->curchan,
		caldata->nfCalHist[3].privNF);
		else
		ext_nf = ATH_DEFAULT_NOISE_FLOOR;

		length = sizeof(fft_sample_40) - sizeof(struct fft_sample_tlv);
		fft_sample_40.tlv.type = ATH_FFT_SAMPLE_HT20_40;
		fft_sample_40.tlv.length = __cpu_to_be16(length);
		fft_sample_40.freq = __cpu_to_be16(freq);
		fft_sample_40.channel_type = chan_type;

		if (chan_type == NL80211_CHAN_HT40PLUS) {
		lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);
		upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]);

		fft_sample_40.lower_noise = ah->noise;
		fft_sample_40.upper_noise = ext_nf;
		} else {
		lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]);
		upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);

		fft_sample_40.lower_noise = ext_nf;
		fft_sample_40.upper_noise = ah->noise;
		}
		fft_sample_40.lower_rssi = lower_rssi;
		fft_sample_40.upper_rssi = upper_rssi;

		mag_info = ((struct ath_ht20_40_mag_info *)radar_info) - 1;
		lower_mag = spectral_max_magnitude(mag_info->lower_bins);
		upper_mag = spectral_max_magnitude(mag_info->upper_bins);
		fft_sample_40.lower_max_magnitude = __cpu_to_be16(lower_mag);
		fft_sample_40.upper_max_magnitude = __cpu_to_be16(upper_mag);
		lower_max_index = spectral_max_index(mag_info->lower_bins);
		upper_max_index = spectral_max_index(mag_info->upper_bins);
		fft_sample_40.lower_max_index = lower_max_index;
		fft_sample_40.upper_max_index = upper_max_index;
		lower_bitmap_w = spectral_bitmap_weight(mag_info->lower_bins);
		upper_bitmap_w = spectral_bitmap_weight(mag_info->upper_bins);
		fft_sample_40.lower_bitmap_weight = lower_bitmap_w;
		fft_sample_40.upper_bitmap_weight = upper_bitmap_w;
		fft_sample_40.max_exp = mag_info->max_exp & 0xf;

		fft_sample_40.tsf = __cpu_to_be64(tsf);

		tlv = (struct fft_sample_tlv *)&fft_sample_40;
		} else {
		u8 max_index, bitmap_w;
		u16 magnitude;
		struct ath_ht20_mag_info *mag_info;

		length = sizeof(fft_sample_20) - sizeof(struct fft_sample_tlv);
		fft_sample_20.tlv.type = ATH_FFT_SAMPLE_HT20;
		fft_sample_20.tlv.length = __cpu_to_be16(length);
		fft_sample_20.freq = __cpu_to_be16(freq);

		fft_sample_20.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);
		fft_sample_20.noise = ah->noise;

		mag_info = ((struct ath_ht20_mag_info *)radar_info) - 1;
		magnitude = spectral_max_magnitude(mag_info->all_bins);
		fft_sample_20.max_magnitude = __cpu_to_be16(magnitude);
		max_index = spectral_max_index(mag_info->all_bins);
		fft_sample_20.max_index = max_index;
		bitmap_w = spectral_bitmap_weight(mag_info->all_bins);
		fft_sample_20.bitmap_weight = bitmap_w;
		fft_sample_20.max_exp = mag_info->max_exp & 0xf;

		fft_sample_20.tsf = __cpu_to_be64(tsf);

		tlv = (struct fft_sample_tlv *)&fft_sample_20;
		}

		ath_debug_send_fft_sample(sc, tlv);
		return 1;
		#else
		return 0;
		#endif
		}

		static bool ath9k_is_mybeacon(struct ath_softc sc, struct ieee80211_hdr hdr)
		{
		struct ath_hw *ah = sc->sc_ah;