| // SPDX-License-Identifier: BSD-3-Clause-Clear |
| /* |
| * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved. |
| */ |
| |
| #include <linux/relay.h> |
| #include "core.h" |
| #include "debug.h" |
| |
| #define ATH11K_SPECTRAL_NUM_RESP_PER_EVENT 2 |
| #define ATH11K_SPECTRAL_EVENT_TIMEOUT_MS 1 |
| |
| #define ATH11K_SPECTRAL_DWORD_SIZE 4 |
| #define ATH11K_SPECTRAL_MIN_BINS 32 |
| #define ATH11K_SPECTRAL_MIN_IB_BINS (ATH11K_SPECTRAL_MIN_BINS >> 1) |
| #define ATH11K_SPECTRAL_MAX_IB_BINS(x) ((x)->hw_params.spectral.max_fft_bins >> 1) |
| |
| #define ATH11K_SPECTRAL_SCAN_COUNT_MAX 4095 |
| |
| /* Max channel computed by sum of 2g and 5g band channels */ |
| #define ATH11K_SPECTRAL_TOTAL_CHANNEL 41 |
| #define ATH11K_SPECTRAL_SAMPLES_PER_CHANNEL 70 |
| #define ATH11K_SPECTRAL_PER_SAMPLE_SIZE(x) (sizeof(struct fft_sample_ath11k) + \ |
| ATH11K_SPECTRAL_MAX_IB_BINS(x)) |
| #define ATH11K_SPECTRAL_TOTAL_SAMPLE (ATH11K_SPECTRAL_TOTAL_CHANNEL * \ |
| ATH11K_SPECTRAL_SAMPLES_PER_CHANNEL) |
| #define ATH11K_SPECTRAL_SUB_BUFF_SIZE(x) ATH11K_SPECTRAL_PER_SAMPLE_SIZE(x) |
| #define ATH11K_SPECTRAL_NUM_SUB_BUF ATH11K_SPECTRAL_TOTAL_SAMPLE |
| |
| #define ATH11K_SPECTRAL_20MHZ 20 |
| #define ATH11K_SPECTRAL_40MHZ 40 |
| #define ATH11K_SPECTRAL_80MHZ 80 |
| |
| #define ATH11K_SPECTRAL_SIGNATURE 0xFA |
| |
| #define ATH11K_SPECTRAL_TAG_RADAR_SUMMARY 0x0 |
| #define ATH11K_SPECTRAL_TAG_RADAR_FFT 0x1 |
| #define ATH11K_SPECTRAL_TAG_SCAN_SUMMARY 0x2 |
| #define ATH11K_SPECTRAL_TAG_SCAN_SEARCH 0x3 |
| |
| #define SPECTRAL_TLV_HDR_LEN GENMASK(15, 0) |
| #define SPECTRAL_TLV_HDR_TAG GENMASK(23, 16) |
| #define SPECTRAL_TLV_HDR_SIGN GENMASK(31, 24) |
| |
| #define SPECTRAL_SUMMARY_INFO0_AGC_TOTAL_GAIN GENMASK(7, 0) |
| #define SPECTRAL_SUMMARY_INFO0_OB_FLAG BIT(8) |
| #define SPECTRAL_SUMMARY_INFO0_GRP_IDX GENMASK(16, 9) |
| #define SPECTRAL_SUMMARY_INFO0_RECENT_RFSAT BIT(17) |
| #define SPECTRAL_SUMMARY_INFO0_INBAND_PWR_DB GENMASK(27, 18) |
| #define SPECTRAL_SUMMARY_INFO0_FALSE_SCAN BIT(28) |
| #define SPECTRAL_SUMMARY_INFO0_DETECTOR_ID GENMASK(30, 29) |
| #define SPECTRAL_SUMMARY_INFO0_PRI80 BIT(31) |
| |
| #define SPECTRAL_SUMMARY_INFO2_PEAK_SIGNED_IDX GENMASK(11, 0) |
| #define SPECTRAL_SUMMARY_INFO2_PEAK_MAGNITUDE GENMASK(21, 12) |
| #define SPECTRAL_SUMMARY_INFO2_NARROWBAND_MASK GENMASK(29, 22) |
| #define SPECTRAL_SUMMARY_INFO2_GAIN_CHANGE BIT(30) |
| |
| struct spectral_tlv { |
| __le32 timestamp; |
| __le32 header; |
| } __packed; |
| |
| struct spectral_summary_fft_report { |
| __le32 timestamp; |
| __le32 tlv_header; |
| __le32 info0; |
| __le32 reserve0; |
| __le32 info2; |
| __le32 reserve1; |
| } __packed; |
| |
| struct ath11k_spectral_summary_report { |
| struct wmi_dma_buf_release_meta_data meta; |
| u32 timestamp; |
| u8 agc_total_gain; |
| u8 grp_idx; |
| u16 inb_pwr_db; |
| s16 peak_idx; |
| u16 peak_mag; |
| u8 detector_id; |
| bool out_of_band_flag; |
| bool rf_saturation; |
| bool primary80; |
| bool gain_change; |
| bool false_scan; |
| }; |
| |
| #define SPECTRAL_FFT_REPORT_INFO0_DETECTOR_ID GENMASK(1, 0) |
| #define SPECTRAL_FFT_REPORT_INFO0_FFT_NUM GENMASK(4, 2) |
| #define SPECTRAL_FFT_REPORT_INFO0_RADAR_CHECK GENMASK(16, 5) |
| #define SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX GENMASK(27, 17) |
| #define SPECTRAL_FFT_REPORT_INFO0_CHAIN_IDX GENMASK(30, 28) |
| |
| #define SPECTRAL_FFT_REPORT_INFO1_BASE_PWR_DB GENMASK(8, 0) |
| #define SPECTRAL_FFT_REPORT_INFO1_TOTAL_GAIN_DB GENMASK(16, 9) |
| |
| #define SPECTRAL_FFT_REPORT_INFO2_NUM_STRONG_BINS GENMASK(7, 0) |
| #define SPECTRAL_FFT_REPORT_INFO2_PEAK_MAGNITUDE GENMASK(17, 8) |
| #define SPECTRAL_FFT_REPORT_INFO2_AVG_PWR_DB GENMASK(24, 18) |
| #define SPECTRAL_FFT_REPORT_INFO2_REL_PWR_DB GENMASK(31, 25) |
| |
| struct spectral_search_fft_report { |
| __le32 timestamp; |
| __le32 tlv_header; |
| __le32 info0; |
| __le32 info1; |
| __le32 info2; |
| __le32 reserve0; |
| u8 bins[0]; |
| } __packed; |
| |
| struct ath11k_spectral_search_report { |
| u32 timestamp; |
| u8 detector_id; |
| u8 fft_count; |
| u16 radar_check; |
| s16 peak_idx; |
| u8 chain_idx; |
| u16 base_pwr_db; |
| u8 total_gain_db; |
| u8 strong_bin_count; |
| u16 peak_mag; |
| u8 avg_pwr_db; |
| u8 rel_pwr_db; |
| }; |
| |
| 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 const struct rchan_callbacks rfs_scan_cb = { |
| .create_buf_file = create_buf_file_handler, |
| .remove_buf_file = remove_buf_file_handler, |
| }; |
| |
| static struct ath11k_vif *ath11k_spectral_get_vdev(struct ath11k *ar) |
| { |
| struct ath11k_vif *arvif; |
| |
| lockdep_assert_held(&ar->conf_mutex); |
| |
| if (list_empty(&ar->arvifs)) |
| return NULL; |
| |
| /* if there already is a vif doing spectral, return that. */ |
| list_for_each_entry(arvif, &ar->arvifs, list) |
| if (arvif->spectral_enabled) |
| return arvif; |
| |
| /* otherwise, return the first vif. */ |
| return list_first_entry(&ar->arvifs, typeof(*arvif), list); |
| } |
| |
| static int ath11k_spectral_scan_trigger(struct ath11k *ar) |
| { |
| struct ath11k_vif *arvif; |
| int ret; |
| |
| lockdep_assert_held(&ar->conf_mutex); |
| |
| arvif = ath11k_spectral_get_vdev(ar); |
| if (!arvif) |
| return -ENODEV; |
| |
| if (ar->spectral.mode == ATH11K_SPECTRAL_DISABLED) |
| return 0; |
| |
| ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, |
| ATH11K_WMI_SPECTRAL_TRIGGER_CMD_CLEAR, |
| ATH11K_WMI_SPECTRAL_ENABLE_CMD_ENABLE); |
| if (ret) |
| return ret; |
| |
| ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, |
| ATH11K_WMI_SPECTRAL_TRIGGER_CMD_TRIGGER, |
| ATH11K_WMI_SPECTRAL_ENABLE_CMD_ENABLE); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int ath11k_spectral_scan_config(struct ath11k *ar, |
| enum ath11k_spectral_mode mode) |
| { |
| struct ath11k_wmi_vdev_spectral_conf_param param = { 0 }; |
| struct ath11k_vif *arvif; |
| int ret, count; |
| |
| lockdep_assert_held(&ar->conf_mutex); |
| |
| arvif = ath11k_spectral_get_vdev(ar); |
| if (!arvif) |
| return -ENODEV; |
| |
| arvif->spectral_enabled = (mode != ATH11K_SPECTRAL_DISABLED); |
| ar->spectral.mode = mode; |
| |
| ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, |
| ATH11K_WMI_SPECTRAL_TRIGGER_CMD_CLEAR, |
| ATH11K_WMI_SPECTRAL_ENABLE_CMD_DISABLE); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to enable spectral scan: %d\n", ret); |
| return ret; |
| } |
| |
| if (mode == ATH11K_SPECTRAL_DISABLED) |
| return 0; |
| |
| if (mode == ATH11K_SPECTRAL_BACKGROUND) |
| count = ATH11K_WMI_SPECTRAL_COUNT_DEFAULT; |
| else |
| count = max_t(u16, 1, ar->spectral.count); |
| |
| param.vdev_id = arvif->vdev_id; |
| param.scan_count = count; |
| param.scan_fft_size = ar->spectral.fft_size; |
| param.scan_period = ATH11K_WMI_SPECTRAL_PERIOD_DEFAULT; |
| param.scan_priority = ATH11K_WMI_SPECTRAL_PRIORITY_DEFAULT; |
| param.scan_gc_ena = ATH11K_WMI_SPECTRAL_GC_ENA_DEFAULT; |
| param.scan_restart_ena = ATH11K_WMI_SPECTRAL_RESTART_ENA_DEFAULT; |
| param.scan_noise_floor_ref = ATH11K_WMI_SPECTRAL_NOISE_FLOOR_REF_DEFAULT; |
| param.scan_init_delay = ATH11K_WMI_SPECTRAL_INIT_DELAY_DEFAULT; |
| param.scan_nb_tone_thr = ATH11K_WMI_SPECTRAL_NB_TONE_THR_DEFAULT; |
| param.scan_str_bin_thr = ATH11K_WMI_SPECTRAL_STR_BIN_THR_DEFAULT; |
| param.scan_wb_rpt_mode = ATH11K_WMI_SPECTRAL_WB_RPT_MODE_DEFAULT; |
| param.scan_rssi_rpt_mode = ATH11K_WMI_SPECTRAL_RSSI_RPT_MODE_DEFAULT; |
| param.scan_rssi_thr = ATH11K_WMI_SPECTRAL_RSSI_THR_DEFAULT; |
| param.scan_pwr_format = ATH11K_WMI_SPECTRAL_PWR_FORMAT_DEFAULT; |
| param.scan_rpt_mode = ATH11K_WMI_SPECTRAL_RPT_MODE_DEFAULT; |
| param.scan_bin_scale = ATH11K_WMI_SPECTRAL_BIN_SCALE_DEFAULT; |
| param.scan_dbm_adj = ATH11K_WMI_SPECTRAL_DBM_ADJ_DEFAULT; |
| param.scan_chn_mask = ATH11K_WMI_SPECTRAL_CHN_MASK_DEFAULT; |
| |
| ret = ath11k_wmi_vdev_spectral_conf(ar, ¶m); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to configure spectral scan: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static ssize_t ath11k_read_file_spec_scan_ctl(struct file *file, |
| char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = file->private_data; |
| char *mode = ""; |
| size_t len; |
| enum ath11k_spectral_mode spectral_mode; |
| |
| mutex_lock(&ar->conf_mutex); |
| spectral_mode = ar->spectral.mode; |
| mutex_unlock(&ar->conf_mutex); |
| |
| switch (spectral_mode) { |
| case ATH11K_SPECTRAL_DISABLED: |
| mode = "disable"; |
| break; |
| case ATH11K_SPECTRAL_BACKGROUND: |
| mode = "background"; |
| break; |
| case ATH11K_SPECTRAL_MANUAL: |
| mode = "manual"; |
| break; |
| } |
| |
| len = strlen(mode); |
| return simple_read_from_buffer(user_buf, count, ppos, mode, len); |
| } |
| |
| static ssize_t ath11k_write_file_spec_scan_ctl(struct file *file, |
| const char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = file->private_data; |
| char buf[32]; |
| ssize_t len; |
| int ret; |
| |
| len = min(count, sizeof(buf) - 1); |
| if (copy_from_user(buf, user_buf, len)) |
| return -EFAULT; |
| |
| buf[len] = '\0'; |
| |
| mutex_lock(&ar->conf_mutex); |
| |
| if (strncmp("trigger", buf, 7) == 0) { |
| if (ar->spectral.mode == ATH11K_SPECTRAL_MANUAL || |
| ar->spectral.mode == ATH11K_SPECTRAL_BACKGROUND) { |
| /* reset the configuration to adopt possibly changed |
| * debugfs parameters |
| */ |
| ret = ath11k_spectral_scan_config(ar, ar->spectral.mode); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to reconfigure spectral scan: %d\n", |
| ret); |
| goto unlock; |
| } |
| |
| ret = ath11k_spectral_scan_trigger(ar); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to trigger spectral scan: %d\n", |
| ret); |
| } |
| } else { |
| ret = -EINVAL; |
| } |
| } else if (strncmp("background", buf, 10) == 0) { |
| ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_BACKGROUND); |
| } else if (strncmp("manual", buf, 6) == 0) { |
| ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_MANUAL); |
| } else if (strncmp("disable", buf, 7) == 0) { |
| ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_DISABLED); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| unlock: |
| mutex_unlock(&ar->conf_mutex); |
| |
| if (ret) |
| return ret; |
| |
| return count; |
| } |
| |
| static const struct file_operations fops_scan_ctl = { |
| .read = ath11k_read_file_spec_scan_ctl, |
| .write = ath11k_write_file_spec_scan_ctl, |
| .open = simple_open, |
| .owner = THIS_MODULE, |
| .llseek = default_llseek, |
| }; |
| |
| static ssize_t ath11k_read_file_spectral_count(struct file *file, |
| char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = file->private_data; |
| char buf[32]; |
| size_t len; |
| u16 spectral_count; |
| |
| mutex_lock(&ar->conf_mutex); |
| spectral_count = ar->spectral.count; |
| mutex_unlock(&ar->conf_mutex); |
| |
| len = sprintf(buf, "%d\n", spectral_count); |
| return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
| } |
| |
| static ssize_t ath11k_write_file_spectral_count(struct file *file, |
| const char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = 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 > ATH11K_SPECTRAL_SCAN_COUNT_MAX) |
| return -EINVAL; |
| |
| mutex_lock(&ar->conf_mutex); |
| ar->spectral.count = val; |
| mutex_unlock(&ar->conf_mutex); |
| |
| return count; |
| } |
| |
| static const struct file_operations fops_scan_count = { |
| .read = ath11k_read_file_spectral_count, |
| .write = ath11k_write_file_spectral_count, |
| .open = simple_open, |
| .owner = THIS_MODULE, |
| .llseek = default_llseek, |
| }; |
| |
| static ssize_t ath11k_read_file_spectral_bins(struct file *file, |
| char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = file->private_data; |
| char buf[32]; |
| unsigned int bins, fft_size; |
| size_t len; |
| |
| mutex_lock(&ar->conf_mutex); |
| |
| fft_size = ar->spectral.fft_size; |
| bins = 1 << fft_size; |
| |
| mutex_unlock(&ar->conf_mutex); |
| |
| len = sprintf(buf, "%d\n", bins); |
| return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
| } |
| |
| static ssize_t ath11k_write_file_spectral_bins(struct file *file, |
| const char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ath11k *ar = 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 < ATH11K_SPECTRAL_MIN_BINS || |
| val > ar->ab->hw_params.spectral.max_fft_bins) |
| return -EINVAL; |
| |
| if (!is_power_of_2(val)) |
| return -EINVAL; |
| |
| mutex_lock(&ar->conf_mutex); |
| ar->spectral.fft_size = ilog2(val); |
| mutex_unlock(&ar->conf_mutex); |
| |
| return count; |
| } |
| |
| static const struct file_operations fops_scan_bins = { |
| .read = ath11k_read_file_spectral_bins, |
| .write = ath11k_write_file_spectral_bins, |
| .open = simple_open, |
| .owner = THIS_MODULE, |
| .llseek = default_llseek, |
| }; |
| |
| static int ath11k_spectral_pull_summary(struct ath11k *ar, |
| struct wmi_dma_buf_release_meta_data *meta, |
| struct spectral_summary_fft_report *summary, |
| struct ath11k_spectral_summary_report *report) |
| { |
| report->timestamp = __le32_to_cpu(summary->timestamp); |
| report->agc_total_gain = FIELD_GET(SPECTRAL_SUMMARY_INFO0_AGC_TOTAL_GAIN, |
| __le32_to_cpu(summary->info0)); |
| report->out_of_band_flag = FIELD_GET(SPECTRAL_SUMMARY_INFO0_OB_FLAG, |
| __le32_to_cpu(summary->info0)); |
| report->grp_idx = FIELD_GET(SPECTRAL_SUMMARY_INFO0_GRP_IDX, |
| __le32_to_cpu(summary->info0)); |
| report->rf_saturation = FIELD_GET(SPECTRAL_SUMMARY_INFO0_RECENT_RFSAT, |
| __le32_to_cpu(summary->info0)); |
| report->inb_pwr_db = FIELD_GET(SPECTRAL_SUMMARY_INFO0_INBAND_PWR_DB, |
| __le32_to_cpu(summary->info0)); |
| report->false_scan = FIELD_GET(SPECTRAL_SUMMARY_INFO0_FALSE_SCAN, |
| __le32_to_cpu(summary->info0)); |
| report->detector_id = FIELD_GET(SPECTRAL_SUMMARY_INFO0_DETECTOR_ID, |
| __le32_to_cpu(summary->info0)); |
| report->primary80 = FIELD_GET(SPECTRAL_SUMMARY_INFO0_PRI80, |
| __le32_to_cpu(summary->info0)); |
| report->peak_idx = FIELD_GET(SPECTRAL_SUMMARY_INFO2_PEAK_SIGNED_IDX, |
| __le32_to_cpu(summary->info2)); |
| report->peak_mag = FIELD_GET(SPECTRAL_SUMMARY_INFO2_PEAK_MAGNITUDE, |
| __le32_to_cpu(summary->info2)); |
| report->gain_change = FIELD_GET(SPECTRAL_SUMMARY_INFO2_GAIN_CHANGE, |
| __le32_to_cpu(summary->info2)); |
| |
| memcpy(&report->meta, meta, sizeof(*meta)); |
| |
| return 0; |
| } |
| |
| static int ath11k_spectral_pull_search(struct ath11k *ar, |
| struct spectral_search_fft_report *search, |
| struct ath11k_spectral_search_report *report) |
| { |
| report->timestamp = __le32_to_cpu(search->timestamp); |
| report->detector_id = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_DETECTOR_ID, |
| __le32_to_cpu(search->info0)); |
| report->fft_count = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_FFT_NUM, |
| __le32_to_cpu(search->info0)); |
| report->radar_check = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_RADAR_CHECK, |
| __le32_to_cpu(search->info0)); |
| report->peak_idx = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX, |
| __le32_to_cpu(search->info0)); |
| report->chain_idx = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_CHAIN_IDX, |
| __le32_to_cpu(search->info0)); |
| report->base_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO1_BASE_PWR_DB, |
| __le32_to_cpu(search->info1)); |
| report->total_gain_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO1_TOTAL_GAIN_DB, |
| __le32_to_cpu(search->info1)); |
| report->strong_bin_count = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_NUM_STRONG_BINS, |
| __le32_to_cpu(search->info2)); |
| report->peak_mag = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_PEAK_MAGNITUDE, |
| __le32_to_cpu(search->info2)); |
| report->avg_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_AVG_PWR_DB, |
| __le32_to_cpu(search->info2)); |
| report->rel_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_REL_PWR_DB, |
| __le32_to_cpu(search->info2)); |
| |
| return 0; |
| } |
| |
| static u8 ath11k_spectral_get_max_exp(s8 max_index, u8 max_magnitude, |
| int bin_len, u8 *bins) |
| { |
| int dc_pos; |
| u8 max_exp; |
| |
| dc_pos = bin_len / 2; |
| |
| /* peak index outside of bins */ |
| if (dc_pos <= max_index || -dc_pos >= max_index) |
| return 0; |
| |
| for (max_exp = 0; max_exp < 8; max_exp++) { |
| if (bins[dc_pos + max_index] == (max_magnitude >> max_exp)) |
| break; |
| } |
| |
| /* max_exp not found */ |
| if (bins[dc_pos + max_index] != (max_magnitude >> max_exp)) |
| return 0; |
| |
| return max_exp; |
| } |
| |
| static void ath11k_spectral_parse_fft(u8 *outbins, u8 *inbins, int num_bins, u8 fft_sz) |
| { |
| int i, j; |
| |
| i = 0; |
| j = 0; |
| while (i < num_bins) { |
| outbins[i] = inbins[j]; |
| i++; |
| j += fft_sz; |
| } |
| } |
| |
| static |
| int ath11k_spectral_process_fft(struct ath11k *ar, |
| struct ath11k_spectral_summary_report *summary, |
| void *data, |
| struct fft_sample_ath11k *fft_sample, |
| u32 data_len) |
| { |
| struct ath11k_base *ab = ar->ab; |
| struct spectral_search_fft_report *fft_report = data; |
| struct ath11k_spectral_search_report search; |
| struct spectral_tlv *tlv; |
| int tlv_len, bin_len, num_bins; |
| u16 length, freq; |
| u8 chan_width_mhz, bin_sz; |
| int ret; |
| u32 check_length; |
| |
| lockdep_assert_held(&ar->spectral.lock); |
| |
| if (!ab->hw_params.spectral.fft_sz) { |
| ath11k_warn(ab, "invalid bin size type for hw rev %d\n", |
| ab->hw_rev); |
| return -EINVAL; |
| } |
| |
| tlv = (struct spectral_tlv *)data; |
| tlv_len = FIELD_GET(SPECTRAL_TLV_HDR_LEN, __le32_to_cpu(tlv->header)); |
| /* convert Dword into bytes */ |
| tlv_len *= ATH11K_SPECTRAL_DWORD_SIZE; |
| bin_len = tlv_len - ab->hw_params.spectral.fft_hdr_len; |
| |
| if (data_len < (bin_len + sizeof(*fft_report))) { |
| ath11k_warn(ab, "mismatch in expected bin len %d and data len %d\n", |
| bin_len, data_len); |
| return -EINVAL; |
| } |
| |
| bin_sz = ab->hw_params.spectral.fft_sz + ab->hw_params.spectral.fft_pad_sz; |
| num_bins = bin_len / bin_sz; |
| /* Only In-band bins are useful to user for visualize */ |
| num_bins >>= 1; |
| |
| if (num_bins < ATH11K_SPECTRAL_MIN_IB_BINS || |
| num_bins > ATH11K_SPECTRAL_MAX_IB_BINS(ab) || |
| !is_power_of_2(num_bins)) { |
| ath11k_warn(ab, "Invalid num of bins %d\n", num_bins); |
| return -EINVAL; |
| } |
| |
| check_length = sizeof(*fft_report) + (num_bins * ab->hw_params.spectral.fft_sz); |
| ret = ath11k_dbring_validate_buffer(ar, data, check_length); |
| if (ret) { |
| ath11k_warn(ar->ab, "found magic value in fft data, dropping\n"); |
| return ret; |
| } |
| |
| ret = ath11k_spectral_pull_search(ar, data, &search); |
| if (ret) { |
| ath11k_warn(ab, "failed to pull search report %d\n", ret); |
| return ret; |
| } |
| |
| chan_width_mhz = summary->meta.ch_width; |
| |
| switch (chan_width_mhz) { |
| case ATH11K_SPECTRAL_20MHZ: |
| case ATH11K_SPECTRAL_40MHZ: |
| case ATH11K_SPECTRAL_80MHZ: |
| fft_sample->chan_width_mhz = chan_width_mhz; |
| break; |
| default: |
| ath11k_warn(ab, "invalid channel width %d\n", chan_width_mhz); |
| return -EINVAL; |
| } |
| |
| length = sizeof(*fft_sample) - sizeof(struct fft_sample_tlv) + num_bins; |
| fft_sample->tlv.type = ATH_FFT_SAMPLE_ATH11K; |
| fft_sample->tlv.length = __cpu_to_be16(length); |
| |
| fft_sample->tsf = __cpu_to_be32(search.timestamp); |
| fft_sample->max_magnitude = __cpu_to_be16(search.peak_mag); |
| fft_sample->max_index = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX, |
| __le32_to_cpu(fft_report->info0)); |
| |
| summary->inb_pwr_db >>= 1; |
| fft_sample->rssi = __cpu_to_be16(summary->inb_pwr_db); |
| fft_sample->noise = __cpu_to_be32(summary->meta.noise_floor[search.chain_idx]); |
| |
| freq = summary->meta.freq1; |
| fft_sample->freq1 = __cpu_to_be16(freq); |
| |
| freq = summary->meta.freq2; |
| fft_sample->freq2 = __cpu_to_be16(freq); |
| |
| ath11k_spectral_parse_fft(fft_sample->data, fft_report->bins, num_bins, |
| ab->hw_params.spectral.fft_sz); |
| |
| fft_sample->max_exp = ath11k_spectral_get_max_exp(fft_sample->max_index, |
| search.peak_mag, |
| num_bins, |
| fft_sample->data); |
| |
| if (ar->spectral.rfs_scan) |
| relay_write(ar->spectral.rfs_scan, fft_sample, |
| length + sizeof(struct fft_sample_tlv)); |
| |
| return 0; |
| } |
| |
| static int ath11k_spectral_process_data(struct ath11k *ar, |
| struct ath11k_dbring_data *param) |
| { |
| struct ath11k_base *ab = ar->ab; |
| struct spectral_tlv *tlv; |
| struct spectral_summary_fft_report *summary = NULL; |
| struct ath11k_spectral_summary_report summ_rpt; |
| struct fft_sample_ath11k *fft_sample = NULL; |
| u8 *data; |
| u32 data_len, i; |
| u8 sign, tag; |
| int tlv_len, sample_sz; |
| int ret; |
| bool quit = false; |
| |
| spin_lock_bh(&ar->spectral.lock); |
| |
| if (!ar->spectral.enabled) { |
| ret = -EINVAL; |
| goto unlock; |
| } |
| |
| sample_sz = sizeof(*fft_sample) + ATH11K_SPECTRAL_MAX_IB_BINS(ab); |
| fft_sample = kmalloc(sample_sz, GFP_ATOMIC); |
| if (!fft_sample) { |
| ret = -ENOBUFS; |
| goto unlock; |
| } |
| |
| data = param->data; |
| data_len = param->data_sz; |
| i = 0; |
| while (!quit && (i < data_len)) { |
| if ((i + sizeof(*tlv)) > data_len) { |
| ath11k_warn(ab, "failed to parse spectral tlv hdr at bytes %d\n", |
| i); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tlv = (struct spectral_tlv *)&data[i]; |
| sign = FIELD_GET(SPECTRAL_TLV_HDR_SIGN, |
| __le32_to_cpu(tlv->header)); |
| if (sign != ATH11K_SPECTRAL_SIGNATURE) { |
| ath11k_warn(ab, "Invalid sign 0x%x at bytes %d\n", |
| sign, i); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tlv_len = FIELD_GET(SPECTRAL_TLV_HDR_LEN, |
| __le32_to_cpu(tlv->header)); |
| /* convert Dword into bytes */ |
| tlv_len *= ATH11K_SPECTRAL_DWORD_SIZE; |
| if ((i + sizeof(*tlv) + tlv_len) > data_len) { |
| ath11k_warn(ab, "failed to parse spectral tlv payload at bytes %d tlv_len:%d data_len:%d\n", |
| i, tlv_len, data_len); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tag = FIELD_GET(SPECTRAL_TLV_HDR_TAG, |
| __le32_to_cpu(tlv->header)); |
| switch (tag) { |
| case ATH11K_SPECTRAL_TAG_SCAN_SUMMARY: |
| /* HW bug in tlv length of summary report, |
| * HW report 3 DWORD size but the data payload |
| * is 4 DWORD size (16 bytes). |
| * Need to remove this workaround once HW bug fixed |
| */ |
| tlv_len = sizeof(*summary) - sizeof(*tlv) + |
| ab->hw_params.spectral.summary_pad_sz; |
| |
| if (tlv_len < (sizeof(*summary) - sizeof(*tlv))) { |
| ath11k_warn(ab, "failed to parse spectral summary at bytes %d tlv_len:%d\n", |
| i, tlv_len); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| ret = ath11k_dbring_validate_buffer(ar, data, tlv_len); |
| if (ret) { |
| ath11k_warn(ar->ab, "found magic value in spectral summary, dropping\n"); |
| goto err; |
| } |
| |
| summary = (struct spectral_summary_fft_report *)tlv; |
| ath11k_spectral_pull_summary(ar, ¶m->meta, |
| summary, &summ_rpt); |
| break; |
| case ATH11K_SPECTRAL_TAG_SCAN_SEARCH: |
| if (tlv_len < (sizeof(struct spectral_search_fft_report) - |
| sizeof(*tlv))) { |
| ath11k_warn(ab, "failed to parse spectral search fft at bytes %d\n", |
| i); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| memset(fft_sample, 0, sample_sz); |
| ret = ath11k_spectral_process_fft(ar, &summ_rpt, tlv, |
| fft_sample, |
| data_len - i); |
| if (ret) { |
| ath11k_warn(ab, "failed to process spectral fft at bytes %d\n", |
| i); |
| goto err; |
| } |
| quit = true; |
| break; |
| } |
| |
| i += sizeof(*tlv) + tlv_len; |
| } |
| |
| ret = 0; |
| |
| err: |
| kfree(fft_sample); |
| unlock: |
| spin_unlock_bh(&ar->spectral.lock); |
| return ret; |
| } |
| |
| static int ath11k_spectral_ring_alloc(struct ath11k *ar, |
| struct ath11k_dbring_cap *db_cap) |
| { |
| struct ath11k_spectral *sp = &ar->spectral; |
| int ret; |
| |
| ret = ath11k_dbring_srng_setup(ar, &sp->rx_ring, |
| 0, db_cap->min_elem); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to setup db ring\n"); |
| return ret; |
| } |
| |
| ath11k_dbring_set_cfg(ar, &sp->rx_ring, |
| ATH11K_SPECTRAL_NUM_RESP_PER_EVENT, |
| ATH11K_SPECTRAL_EVENT_TIMEOUT_MS, |
| ath11k_spectral_process_data); |
| |
| ret = ath11k_dbring_buf_setup(ar, &sp->rx_ring, db_cap); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to setup db ring buffer\n"); |
| goto srng_cleanup; |
| } |
| |
| ret = ath11k_dbring_wmi_cfg_setup(ar, &sp->rx_ring, |
| WMI_DIRECT_BUF_SPECTRAL); |
| if (ret) { |
| ath11k_warn(ar->ab, "failed to setup db ring cfg\n"); |
| goto buffer_cleanup; |
| } |
| |
| return 0; |
| |
| buffer_cleanup: |
| ath11k_dbring_buf_cleanup(ar, &sp->rx_ring); |
| srng_cleanup: |
| ath11k_dbring_srng_cleanup(ar, &sp->rx_ring); |
| return ret; |
| } |
| |
| static inline void ath11k_spectral_ring_free(struct ath11k *ar) |
| { |
| struct ath11k_spectral *sp = &ar->spectral; |
| |
| if (!sp->enabled) |
| return; |
| |
| ath11k_dbring_srng_cleanup(ar, &sp->rx_ring); |
| ath11k_dbring_buf_cleanup(ar, &sp->rx_ring); |
| } |
| |
| static inline void ath11k_spectral_debug_unregister(struct ath11k *ar) |
| { |
| debugfs_remove(ar->spectral.scan_bins); |
| ar->spectral.scan_bins = NULL; |
| |
| debugfs_remove(ar->spectral.scan_count); |
| ar->spectral.scan_count = NULL; |
| |
| debugfs_remove(ar->spectral.scan_ctl); |
| ar->spectral.scan_ctl = NULL; |
| |
| if (ar->spectral.rfs_scan) { |
| relay_close(ar->spectral.rfs_scan); |
| ar->spectral.rfs_scan = NULL; |
| } |
| } |
| |
| int ath11k_spectral_vif_stop(struct ath11k_vif *arvif) |
| { |
| if (!arvif->spectral_enabled) |
| return 0; |
| |
| return ath11k_spectral_scan_config(arvif->ar, ATH11K_SPECTRAL_DISABLED); |
| } |
| |
| void ath11k_spectral_reset_buffer(struct ath11k *ar) |
| { |
| if (!ar->spectral.enabled) |
| return; |
| |
| if (ar->spectral.rfs_scan) |
| relay_reset(ar->spectral.rfs_scan); |
| } |
| |
| void ath11k_spectral_deinit(struct ath11k_base *ab) |
| { |
| struct ath11k *ar; |
| struct ath11k_spectral *sp; |
| int i; |
| |
| for (i = 0; i < ab->num_radios; i++) { |
| ar = ab->pdevs[i].ar; |
| sp = &ar->spectral; |
| |
| if (!sp->enabled) |
| continue; |
| |
| ath11k_spectral_debug_unregister(ar); |
| ath11k_spectral_ring_free(ar); |
| |
| spin_lock_bh(&sp->lock); |
| |
| sp->mode = ATH11K_SPECTRAL_DISABLED; |
| sp->enabled = false; |
| |
| spin_unlock_bh(&sp->lock); |
| } |
| } |
| |
| static inline int ath11k_spectral_debug_register(struct ath11k *ar) |
| { |
| int ret; |
| |
| ar->spectral.rfs_scan = relay_open("spectral_scan", |
| ar->debug.debugfs_pdev, |
| ATH11K_SPECTRAL_SUB_BUFF_SIZE(ar->ab), |
| ATH11K_SPECTRAL_NUM_SUB_BUF, |
| &rfs_scan_cb, NULL); |
| if (!ar->spectral.rfs_scan) { |
| ath11k_warn(ar->ab, "failed to open relay in pdev %d\n", |
| ar->pdev_idx); |
| return -EINVAL; |
| } |
| |
| ar->spectral.scan_ctl = debugfs_create_file("spectral_scan_ctl", |
| 0600, |
| ar->debug.debugfs_pdev, ar, |
| &fops_scan_ctl); |
| if (!ar->spectral.scan_ctl) { |
| ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", |
| ar->pdev_idx); |
| ret = -EINVAL; |
| goto debug_unregister; |
| } |
| |
| ar->spectral.scan_count = debugfs_create_file("spectral_count", |
| 0600, |
| ar->debug.debugfs_pdev, ar, |
| &fops_scan_count); |
| if (!ar->spectral.scan_count) { |
| ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", |
| ar->pdev_idx); |
| ret = -EINVAL; |
| goto debug_unregister; |
| } |
| |
| ar->spectral.scan_bins = debugfs_create_file("spectral_bins", |
| 0600, |
| ar->debug.debugfs_pdev, ar, |
| &fops_scan_bins); |
| if (!ar->spectral.scan_bins) { |
| ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", |
| ar->pdev_idx); |
| ret = -EINVAL; |
| goto debug_unregister; |
| } |
| |
| return 0; |
| |
| debug_unregister: |
| ath11k_spectral_debug_unregister(ar); |
| return ret; |
| } |
| |
| int ath11k_spectral_init(struct ath11k_base *ab) |
| { |
| struct ath11k *ar; |
| struct ath11k_spectral *sp; |
| struct ath11k_dbring_cap db_cap; |
| int ret; |
| int i; |
| |
| if (!test_bit(WMI_TLV_SERVICE_FREQINFO_IN_METADATA, |
| ab->wmi_ab.svc_map)) |
| return 0; |
| |
| if (!ab->hw_params.spectral.fft_sz) |
| return 0; |
| |
| for (i = 0; i < ab->num_radios; i++) { |
| ar = ab->pdevs[i].ar; |
| sp = &ar->spectral; |
| |
| ret = ath11k_dbring_get_cap(ar->ab, ar->pdev_idx, |
| WMI_DIRECT_BUF_SPECTRAL, |
| &db_cap); |
| if (ret) |
| continue; |
| |
| idr_init(&sp->rx_ring.bufs_idr); |
| spin_lock_init(&sp->rx_ring.idr_lock); |
| spin_lock_init(&sp->lock); |
| |
| ret = ath11k_spectral_ring_alloc(ar, &db_cap); |
| if (ret) { |
| ath11k_warn(ab, "failed to init spectral ring for pdev %d\n", |
| i); |
| goto deinit; |
| } |
| |
| spin_lock_bh(&sp->lock); |
| |
| sp->mode = ATH11K_SPECTRAL_DISABLED; |
| sp->count = ATH11K_WMI_SPECTRAL_COUNT_DEFAULT; |
| sp->fft_size = ATH11K_WMI_SPECTRAL_FFT_SIZE_DEFAULT; |
| sp->enabled = true; |
| |
| spin_unlock_bh(&sp->lock); |
| |
| ret = ath11k_spectral_debug_register(ar); |
| if (ret) { |
| ath11k_warn(ab, "failed to register spectral for pdev %d\n", |
| i); |
| goto deinit; |
| } |
| } |
| |
| return 0; |
| |
| deinit: |
| ath11k_spectral_deinit(ab); |
| return ret; |
| } |
| |
| enum ath11k_spectral_mode ath11k_spectral_get_mode(struct ath11k *ar) |
| { |
| if (ar->spectral.enabled) |
| return ar->spectral.mode; |
| else |
| return ATH11K_SPECTRAL_DISABLED; |
| } |
| |
| struct ath11k_dbring *ath11k_spectral_get_dbring(struct ath11k *ar) |
| { |
| if (ar->spectral.enabled) |
| return &ar->spectral.rx_ring; |
| else |
| return NULL; |
| } |