diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/spectral.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/spectral.c | 543 |
1 files changed, 0 insertions, 543 deletions
diff --git a/drivers/net/wireless/ath/ath9k/spectral.c b/drivers/net/wireless/ath/ath9k/spectral.c deleted file mode 100644 index 8f68426ca653..000000000000 --- a/drivers/net/wireless/ath/ath9k/spectral.c +++ /dev/null @@ -1,543 +0,0 @@ -/* - * Copyright (c) 2013 Qualcomm Atheros, Inc. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <linux/relay.h> -#include "ath9k.h" - -static s8 fix_rssi_inv_only(u8 rssi_val) -{ - if (rssi_val == 128) - rssi_val = 0; - return (s8) rssi_val; -} - -static 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); -} - -/* returns 1 if this was a spectral frame, even if not handled. */ -int ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, - struct ath_rx_status *rs, u64 tsf) -{ - 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; -} - -/*********************/ -/* spectral_scan_ctl */ -/*********************/ - -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, 10) == 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, -}; - -/*************************/ -/* spectral_short_repeat */ -/*************************/ - -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 > 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, -}; - -/******************/ -/* spectral_count */ -/******************/ - -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 > 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, -}; - -/*******************/ -/* spectral_period */ -/*******************/ - -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 > 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, -}; - -/***********************/ -/* spectral_fft_period */ -/***********************/ - -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 > 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, -}; - -/*******************/ -/* Relay interface */ -/*******************/ - -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; -} - -static struct rchan_callbacks rfs_spec_scan_cb = { - .create_buf_file = create_buf_file_handler, - .remove_buf_file = remove_buf_file_handler, -}; - -/*********************/ -/* Debug Init/Deinit */ -/*********************/ - -void ath9k_spectral_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; - } -} - -void ath9k_spectral_init_debug(struct ath_softc *sc) -{ - 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); -} |