1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. 5 */ 6 7 #include <linux/relay.h> 8 #include "core.h" 9 #include "debug.h" 10 11 #define ATH11K_SPECTRAL_NUM_RESP_PER_EVENT 2 12 #define ATH11K_SPECTRAL_EVENT_TIMEOUT_MS 1 13 14 #define ATH11K_SPECTRAL_DWORD_SIZE 4 15 #define ATH11K_SPECTRAL_MIN_BINS 32 16 #define ATH11K_SPECTRAL_MIN_IB_BINS (ATH11K_SPECTRAL_MIN_BINS >> 1) 17 #define ATH11K_SPECTRAL_MAX_IB_BINS(x) ((x)->hw_params.spectral.max_fft_bins >> 1) 18 19 #define ATH11K_SPECTRAL_SCAN_COUNT_MAX 4095 20 21 /* Max channel computed by sum of 2g and 5g band channels */ 22 #define ATH11K_SPECTRAL_TOTAL_CHANNEL 41 23 #define ATH11K_SPECTRAL_SAMPLES_PER_CHANNEL 70 24 #define ATH11K_SPECTRAL_PER_SAMPLE_SIZE(x) (sizeof(struct fft_sample_ath11k) + \ 25 ATH11K_SPECTRAL_MAX_IB_BINS(x)) 26 #define ATH11K_SPECTRAL_TOTAL_SAMPLE (ATH11K_SPECTRAL_TOTAL_CHANNEL * \ 27 ATH11K_SPECTRAL_SAMPLES_PER_CHANNEL) 28 #define ATH11K_SPECTRAL_SUB_BUFF_SIZE(x) ATH11K_SPECTRAL_PER_SAMPLE_SIZE(x) 29 #define ATH11K_SPECTRAL_NUM_SUB_BUF ATH11K_SPECTRAL_TOTAL_SAMPLE 30 31 #define ATH11K_SPECTRAL_20MHZ 20 32 #define ATH11K_SPECTRAL_40MHZ 40 33 #define ATH11K_SPECTRAL_80MHZ 80 34 #define ATH11K_SPECTRAL_160MHZ 160 35 36 #define ATH11K_SPECTRAL_SIGNATURE 0xFA 37 38 #define ATH11K_SPECTRAL_TAG_RADAR_SUMMARY 0x0 39 #define ATH11K_SPECTRAL_TAG_RADAR_FFT 0x1 40 #define ATH11K_SPECTRAL_TAG_SCAN_SUMMARY 0x2 41 #define ATH11K_SPECTRAL_TAG_SCAN_SEARCH 0x3 42 43 #define SPECTRAL_TLV_HDR_LEN GENMASK(15, 0) 44 #define SPECTRAL_TLV_HDR_TAG GENMASK(23, 16) 45 #define SPECTRAL_TLV_HDR_SIGN GENMASK(31, 24) 46 47 #define SPECTRAL_SUMMARY_INFO0_AGC_TOTAL_GAIN GENMASK(7, 0) 48 #define SPECTRAL_SUMMARY_INFO0_OB_FLAG BIT(8) 49 #define SPECTRAL_SUMMARY_INFO0_GRP_IDX GENMASK(16, 9) 50 #define SPECTRAL_SUMMARY_INFO0_RECENT_RFSAT BIT(17) 51 #define SPECTRAL_SUMMARY_INFO0_INBAND_PWR_DB GENMASK(27, 18) 52 #define SPECTRAL_SUMMARY_INFO0_FALSE_SCAN BIT(28) 53 #define SPECTRAL_SUMMARY_INFO0_DETECTOR_ID GENMASK(30, 29) 54 #define SPECTRAL_SUMMARY_INFO0_PRI80 BIT(31) 55 56 #define SPECTRAL_SUMMARY_INFO2_PEAK_SIGNED_IDX GENMASK(11, 0) 57 #define SPECTRAL_SUMMARY_INFO2_PEAK_MAGNITUDE GENMASK(21, 12) 58 #define SPECTRAL_SUMMARY_INFO2_NARROWBAND_MASK GENMASK(29, 22) 59 #define SPECTRAL_SUMMARY_INFO2_GAIN_CHANGE BIT(30) 60 61 struct spectral_tlv { 62 __le32 timestamp; 63 __le32 header; 64 } __packed; 65 66 struct spectral_summary_fft_report { 67 __le32 timestamp; 68 __le32 tlv_header; 69 __le32 info0; 70 __le32 reserve0; 71 __le32 info2; 72 __le32 reserve1; 73 } __packed; 74 75 struct ath11k_spectral_summary_report { 76 struct wmi_dma_buf_release_meta_data meta; 77 u32 timestamp; 78 u8 agc_total_gain; 79 u8 grp_idx; 80 u16 inb_pwr_db; 81 s16 peak_idx; 82 u16 peak_mag; 83 u8 detector_id; 84 bool out_of_band_flag; 85 bool rf_saturation; 86 bool primary80; 87 bool gain_change; 88 bool false_scan; 89 }; 90 91 #define SPECTRAL_FFT_REPORT_INFO0_DETECTOR_ID GENMASK(1, 0) 92 #define SPECTRAL_FFT_REPORT_INFO0_FFT_NUM GENMASK(4, 2) 93 #define SPECTRAL_FFT_REPORT_INFO0_RADAR_CHECK GENMASK(16, 5) 94 #define SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX GENMASK(27, 17) 95 #define SPECTRAL_FFT_REPORT_INFO0_CHAIN_IDX GENMASK(30, 28) 96 97 #define SPECTRAL_FFT_REPORT_INFO1_BASE_PWR_DB GENMASK(8, 0) 98 #define SPECTRAL_FFT_REPORT_INFO1_TOTAL_GAIN_DB GENMASK(16, 9) 99 100 #define SPECTRAL_FFT_REPORT_INFO2_NUM_STRONG_BINS GENMASK(7, 0) 101 #define SPECTRAL_FFT_REPORT_INFO2_PEAK_MAGNITUDE GENMASK(17, 8) 102 #define SPECTRAL_FFT_REPORT_INFO2_AVG_PWR_DB GENMASK(24, 18) 103 #define SPECTRAL_FFT_REPORT_INFO2_REL_PWR_DB GENMASK(31, 25) 104 105 struct spectral_search_fft_report { 106 __le32 timestamp; 107 __le32 tlv_header; 108 __le32 info0; 109 __le32 info1; 110 __le32 info2; 111 __le32 reserve0; 112 u8 bins[]; 113 } __packed; 114 115 struct ath11k_spectral_search_report { 116 u32 timestamp; 117 u8 detector_id; 118 u8 fft_count; 119 u16 radar_check; 120 s16 peak_idx; 121 u8 chain_idx; 122 u16 base_pwr_db; 123 u8 total_gain_db; 124 u8 strong_bin_count; 125 u16 peak_mag; 126 u8 avg_pwr_db; 127 u8 rel_pwr_db; 128 }; 129 130 static struct dentry *create_buf_file_handler(const char *filename, 131 struct dentry *parent, 132 umode_t mode, 133 struct rchan_buf *buf, 134 int *is_global) 135 { 136 struct dentry *buf_file; 137 138 buf_file = debugfs_create_file(filename, mode, parent, buf, 139 &relay_file_operations); 140 *is_global = 1; 141 return buf_file; 142 } 143 144 static int remove_buf_file_handler(struct dentry *dentry) 145 { 146 debugfs_remove(dentry); 147 148 return 0; 149 } 150 151 static const struct rchan_callbacks rfs_scan_cb = { 152 .create_buf_file = create_buf_file_handler, 153 .remove_buf_file = remove_buf_file_handler, 154 }; 155 156 static struct ath11k_vif *ath11k_spectral_get_vdev(struct ath11k *ar) 157 { 158 struct ath11k_vif *arvif; 159 160 lockdep_assert_held(&ar->conf_mutex); 161 162 if (list_empty(&ar->arvifs)) 163 return NULL; 164 165 /* if there already is a vif doing spectral, return that. */ 166 list_for_each_entry(arvif, &ar->arvifs, list) 167 if (arvif->spectral_enabled) 168 return arvif; 169 170 /* otherwise, return the first vif. */ 171 return list_first_entry(&ar->arvifs, typeof(*arvif), list); 172 } 173 174 static int ath11k_spectral_scan_trigger(struct ath11k *ar) 175 { 176 struct ath11k_vif *arvif; 177 int ret; 178 179 lockdep_assert_held(&ar->conf_mutex); 180 181 arvif = ath11k_spectral_get_vdev(ar); 182 if (!arvif) 183 return -ENODEV; 184 185 if (ar->spectral.mode == ATH11K_SPECTRAL_DISABLED) 186 return 0; 187 188 ar->spectral.is_primary = true; 189 190 ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, 191 ATH11K_WMI_SPECTRAL_TRIGGER_CMD_CLEAR, 192 ATH11K_WMI_SPECTRAL_ENABLE_CMD_ENABLE); 193 if (ret) 194 return ret; 195 196 ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, 197 ATH11K_WMI_SPECTRAL_TRIGGER_CMD_TRIGGER, 198 ATH11K_WMI_SPECTRAL_ENABLE_CMD_ENABLE); 199 if (ret) 200 return ret; 201 202 return 0; 203 } 204 205 static int ath11k_spectral_scan_config(struct ath11k *ar, 206 enum ath11k_spectral_mode mode) 207 { 208 struct ath11k_wmi_vdev_spectral_conf_param param = { 0 }; 209 struct ath11k_vif *arvif; 210 int ret, count; 211 212 lockdep_assert_held(&ar->conf_mutex); 213 214 arvif = ath11k_spectral_get_vdev(ar); 215 if (!arvif) 216 return -ENODEV; 217 218 arvif->spectral_enabled = (mode != ATH11K_SPECTRAL_DISABLED); 219 220 spin_lock_bh(&ar->spectral.lock); 221 ar->spectral.mode = mode; 222 spin_unlock_bh(&ar->spectral.lock); 223 224 ret = ath11k_wmi_vdev_spectral_enable(ar, arvif->vdev_id, 225 ATH11K_WMI_SPECTRAL_TRIGGER_CMD_CLEAR, 226 ATH11K_WMI_SPECTRAL_ENABLE_CMD_DISABLE); 227 if (ret) { 228 ath11k_warn(ar->ab, "failed to enable spectral scan: %d\n", ret); 229 return ret; 230 } 231 232 if (mode == ATH11K_SPECTRAL_DISABLED) 233 return 0; 234 235 if (mode == ATH11K_SPECTRAL_BACKGROUND) 236 count = ATH11K_WMI_SPECTRAL_COUNT_DEFAULT; 237 else 238 count = max_t(u16, 1, ar->spectral.count); 239 240 param.vdev_id = arvif->vdev_id; 241 param.scan_count = count; 242 param.scan_fft_size = ar->spectral.fft_size; 243 param.scan_period = ATH11K_WMI_SPECTRAL_PERIOD_DEFAULT; 244 param.scan_priority = ATH11K_WMI_SPECTRAL_PRIORITY_DEFAULT; 245 param.scan_gc_ena = ATH11K_WMI_SPECTRAL_GC_ENA_DEFAULT; 246 param.scan_restart_ena = ATH11K_WMI_SPECTRAL_RESTART_ENA_DEFAULT; 247 param.scan_noise_floor_ref = ATH11K_WMI_SPECTRAL_NOISE_FLOOR_REF_DEFAULT; 248 param.scan_init_delay = ATH11K_WMI_SPECTRAL_INIT_DELAY_DEFAULT; 249 param.scan_nb_tone_thr = ATH11K_WMI_SPECTRAL_NB_TONE_THR_DEFAULT; 250 param.scan_str_bin_thr = ATH11K_WMI_SPECTRAL_STR_BIN_THR_DEFAULT; 251 param.scan_wb_rpt_mode = ATH11K_WMI_SPECTRAL_WB_RPT_MODE_DEFAULT; 252 param.scan_rssi_rpt_mode = ATH11K_WMI_SPECTRAL_RSSI_RPT_MODE_DEFAULT; 253 param.scan_rssi_thr = ATH11K_WMI_SPECTRAL_RSSI_THR_DEFAULT; 254 param.scan_pwr_format = ATH11K_WMI_SPECTRAL_PWR_FORMAT_DEFAULT; 255 param.scan_rpt_mode = ATH11K_WMI_SPECTRAL_RPT_MODE_DEFAULT; 256 param.scan_bin_scale = ATH11K_WMI_SPECTRAL_BIN_SCALE_DEFAULT; 257 param.scan_dbm_adj = ATH11K_WMI_SPECTRAL_DBM_ADJ_DEFAULT; 258 param.scan_chn_mask = ATH11K_WMI_SPECTRAL_CHN_MASK_DEFAULT; 259 260 ret = ath11k_wmi_vdev_spectral_conf(ar, ¶m); 261 if (ret) { 262 ath11k_warn(ar->ab, "failed to configure spectral scan: %d\n", ret); 263 return ret; 264 } 265 266 return 0; 267 } 268 269 static ssize_t ath11k_read_file_spec_scan_ctl(struct file *file, 270 char __user *user_buf, 271 size_t count, loff_t *ppos) 272 { 273 struct ath11k *ar = file->private_data; 274 char *mode = ""; 275 size_t len; 276 enum ath11k_spectral_mode spectral_mode; 277 278 mutex_lock(&ar->conf_mutex); 279 spectral_mode = ar->spectral.mode; 280 mutex_unlock(&ar->conf_mutex); 281 282 switch (spectral_mode) { 283 case ATH11K_SPECTRAL_DISABLED: 284 mode = "disable"; 285 break; 286 case ATH11K_SPECTRAL_BACKGROUND: 287 mode = "background"; 288 break; 289 case ATH11K_SPECTRAL_MANUAL: 290 mode = "manual"; 291 break; 292 } 293 294 len = strlen(mode); 295 return simple_read_from_buffer(user_buf, count, ppos, mode, len); 296 } 297 298 static ssize_t ath11k_write_file_spec_scan_ctl(struct file *file, 299 const char __user *user_buf, 300 size_t count, loff_t *ppos) 301 { 302 struct ath11k *ar = file->private_data; 303 char buf[32]; 304 ssize_t len; 305 int ret; 306 307 len = min(count, sizeof(buf) - 1); 308 if (copy_from_user(buf, user_buf, len)) 309 return -EFAULT; 310 311 buf[len] = '\0'; 312 313 mutex_lock(&ar->conf_mutex); 314 315 if (strncmp("trigger", buf, 7) == 0) { 316 if (ar->spectral.mode == ATH11K_SPECTRAL_MANUAL || 317 ar->spectral.mode == ATH11K_SPECTRAL_BACKGROUND) { 318 /* reset the configuration to adopt possibly changed 319 * debugfs parameters 320 */ 321 ret = ath11k_spectral_scan_config(ar, ar->spectral.mode); 322 if (ret) { 323 ath11k_warn(ar->ab, "failed to reconfigure spectral scan: %d\n", 324 ret); 325 goto unlock; 326 } 327 328 ret = ath11k_spectral_scan_trigger(ar); 329 if (ret) { 330 ath11k_warn(ar->ab, "failed to trigger spectral scan: %d\n", 331 ret); 332 } 333 } else { 334 ret = -EINVAL; 335 } 336 } else if (strncmp("background", buf, 10) == 0) { 337 ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_BACKGROUND); 338 } else if (strncmp("manual", buf, 6) == 0) { 339 ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_MANUAL); 340 } else if (strncmp("disable", buf, 7) == 0) { 341 ret = ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_DISABLED); 342 } else { 343 ret = -EINVAL; 344 } 345 346 unlock: 347 mutex_unlock(&ar->conf_mutex); 348 349 if (ret) 350 return ret; 351 352 return count; 353 } 354 355 static const struct file_operations fops_scan_ctl = { 356 .read = ath11k_read_file_spec_scan_ctl, 357 .write = ath11k_write_file_spec_scan_ctl, 358 .open = simple_open, 359 .owner = THIS_MODULE, 360 .llseek = default_llseek, 361 }; 362 363 static ssize_t ath11k_read_file_spectral_count(struct file *file, 364 char __user *user_buf, 365 size_t count, loff_t *ppos) 366 { 367 struct ath11k *ar = file->private_data; 368 char buf[32]; 369 size_t len; 370 u16 spectral_count; 371 372 mutex_lock(&ar->conf_mutex); 373 spectral_count = ar->spectral.count; 374 mutex_unlock(&ar->conf_mutex); 375 376 len = sprintf(buf, "%d\n", spectral_count); 377 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 378 } 379 380 static ssize_t ath11k_write_file_spectral_count(struct file *file, 381 const char __user *user_buf, 382 size_t count, loff_t *ppos) 383 { 384 struct ath11k *ar = file->private_data; 385 unsigned long val; 386 ssize_t ret; 387 388 ret = kstrtoul_from_user(user_buf, count, 0, &val); 389 if (ret) 390 return ret; 391 392 if (val > ATH11K_SPECTRAL_SCAN_COUNT_MAX) 393 return -EINVAL; 394 395 mutex_lock(&ar->conf_mutex); 396 ar->spectral.count = val; 397 mutex_unlock(&ar->conf_mutex); 398 399 return count; 400 } 401 402 static const struct file_operations fops_scan_count = { 403 .read = ath11k_read_file_spectral_count, 404 .write = ath11k_write_file_spectral_count, 405 .open = simple_open, 406 .owner = THIS_MODULE, 407 .llseek = default_llseek, 408 }; 409 410 static ssize_t ath11k_read_file_spectral_bins(struct file *file, 411 char __user *user_buf, 412 size_t count, loff_t *ppos) 413 { 414 struct ath11k *ar = file->private_data; 415 char buf[32]; 416 unsigned int bins, fft_size; 417 size_t len; 418 419 mutex_lock(&ar->conf_mutex); 420 421 fft_size = ar->spectral.fft_size; 422 bins = 1 << fft_size; 423 424 mutex_unlock(&ar->conf_mutex); 425 426 len = sprintf(buf, "%d\n", bins); 427 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 428 } 429 430 static ssize_t ath11k_write_file_spectral_bins(struct file *file, 431 const char __user *user_buf, 432 size_t count, loff_t *ppos) 433 { 434 struct ath11k *ar = file->private_data; 435 unsigned long val; 436 ssize_t ret; 437 438 ret = kstrtoul_from_user(user_buf, count, 0, &val); 439 if (ret) 440 return ret; 441 442 if (val < ATH11K_SPECTRAL_MIN_BINS || 443 val > ar->ab->hw_params.spectral.max_fft_bins) 444 return -EINVAL; 445 446 if (!is_power_of_2(val)) 447 return -EINVAL; 448 449 mutex_lock(&ar->conf_mutex); 450 ar->spectral.fft_size = ilog2(val); 451 mutex_unlock(&ar->conf_mutex); 452 453 return count; 454 } 455 456 static const struct file_operations fops_scan_bins = { 457 .read = ath11k_read_file_spectral_bins, 458 .write = ath11k_write_file_spectral_bins, 459 .open = simple_open, 460 .owner = THIS_MODULE, 461 .llseek = default_llseek, 462 }; 463 464 static int ath11k_spectral_pull_summary(struct ath11k *ar, 465 struct wmi_dma_buf_release_meta_data *meta, 466 struct spectral_summary_fft_report *summary, 467 struct ath11k_spectral_summary_report *report) 468 { 469 report->timestamp = __le32_to_cpu(summary->timestamp); 470 report->agc_total_gain = FIELD_GET(SPECTRAL_SUMMARY_INFO0_AGC_TOTAL_GAIN, 471 __le32_to_cpu(summary->info0)); 472 report->out_of_band_flag = FIELD_GET(SPECTRAL_SUMMARY_INFO0_OB_FLAG, 473 __le32_to_cpu(summary->info0)); 474 report->grp_idx = FIELD_GET(SPECTRAL_SUMMARY_INFO0_GRP_IDX, 475 __le32_to_cpu(summary->info0)); 476 report->rf_saturation = FIELD_GET(SPECTRAL_SUMMARY_INFO0_RECENT_RFSAT, 477 __le32_to_cpu(summary->info0)); 478 report->inb_pwr_db = FIELD_GET(SPECTRAL_SUMMARY_INFO0_INBAND_PWR_DB, 479 __le32_to_cpu(summary->info0)); 480 report->false_scan = FIELD_GET(SPECTRAL_SUMMARY_INFO0_FALSE_SCAN, 481 __le32_to_cpu(summary->info0)); 482 report->detector_id = FIELD_GET(SPECTRAL_SUMMARY_INFO0_DETECTOR_ID, 483 __le32_to_cpu(summary->info0)); 484 report->primary80 = FIELD_GET(SPECTRAL_SUMMARY_INFO0_PRI80, 485 __le32_to_cpu(summary->info0)); 486 report->peak_idx = FIELD_GET(SPECTRAL_SUMMARY_INFO2_PEAK_SIGNED_IDX, 487 __le32_to_cpu(summary->info2)); 488 report->peak_mag = FIELD_GET(SPECTRAL_SUMMARY_INFO2_PEAK_MAGNITUDE, 489 __le32_to_cpu(summary->info2)); 490 report->gain_change = FIELD_GET(SPECTRAL_SUMMARY_INFO2_GAIN_CHANGE, 491 __le32_to_cpu(summary->info2)); 492 493 memcpy(&report->meta, meta, sizeof(*meta)); 494 495 return 0; 496 } 497 498 static int ath11k_spectral_pull_search(struct ath11k *ar, 499 struct spectral_search_fft_report *search, 500 struct ath11k_spectral_search_report *report) 501 { 502 report->timestamp = __le32_to_cpu(search->timestamp); 503 report->detector_id = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_DETECTOR_ID, 504 __le32_to_cpu(search->info0)); 505 report->fft_count = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_FFT_NUM, 506 __le32_to_cpu(search->info0)); 507 report->radar_check = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_RADAR_CHECK, 508 __le32_to_cpu(search->info0)); 509 report->peak_idx = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX, 510 __le32_to_cpu(search->info0)); 511 report->chain_idx = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_CHAIN_IDX, 512 __le32_to_cpu(search->info0)); 513 report->base_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO1_BASE_PWR_DB, 514 __le32_to_cpu(search->info1)); 515 report->total_gain_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO1_TOTAL_GAIN_DB, 516 __le32_to_cpu(search->info1)); 517 report->strong_bin_count = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_NUM_STRONG_BINS, 518 __le32_to_cpu(search->info2)); 519 report->peak_mag = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_PEAK_MAGNITUDE, 520 __le32_to_cpu(search->info2)); 521 report->avg_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_AVG_PWR_DB, 522 __le32_to_cpu(search->info2)); 523 report->rel_pwr_db = FIELD_GET(SPECTRAL_FFT_REPORT_INFO2_REL_PWR_DB, 524 __le32_to_cpu(search->info2)); 525 526 return 0; 527 } 528 529 static u8 ath11k_spectral_get_max_exp(s8 max_index, u8 max_magnitude, 530 int bin_len, u8 *bins) 531 { 532 int dc_pos; 533 u8 max_exp; 534 535 dc_pos = bin_len / 2; 536 537 /* peak index outside of bins */ 538 if (dc_pos <= max_index || -dc_pos >= max_index) 539 return 0; 540 541 for (max_exp = 0; max_exp < 8; max_exp++) { 542 if (bins[dc_pos + max_index] == (max_magnitude >> max_exp)) 543 break; 544 } 545 546 /* max_exp not found */ 547 if (bins[dc_pos + max_index] != (max_magnitude >> max_exp)) 548 return 0; 549 550 return max_exp; 551 } 552 553 static void ath11k_spectral_parse_fft(u8 *outbins, u8 *inbins, int num_bins, u8 fft_sz) 554 { 555 int i, j; 556 557 i = 0; 558 j = 0; 559 while (i < num_bins) { 560 outbins[i] = inbins[j]; 561 i++; 562 j += fft_sz; 563 } 564 } 565 566 static 567 int ath11k_spectral_process_fft(struct ath11k *ar, 568 struct ath11k_spectral_summary_report *summary, 569 void *data, 570 struct fft_sample_ath11k *fft_sample, 571 u32 data_len) 572 { 573 struct ath11k_base *ab = ar->ab; 574 struct spectral_search_fft_report *fft_report = data; 575 struct ath11k_spectral_search_report search; 576 struct spectral_tlv *tlv; 577 int tlv_len, bin_len, num_bins; 578 u16 length, freq; 579 u8 chan_width_mhz, bin_sz; 580 int ret; 581 u32 check_length; 582 bool fragment_sample = false; 583 584 lockdep_assert_held(&ar->spectral.lock); 585 586 if (!ab->hw_params.spectral.fft_sz) { 587 ath11k_warn(ab, "invalid bin size type for hw rev %d\n", 588 ab->hw_rev); 589 return -EINVAL; 590 } 591 592 tlv = data; 593 tlv_len = FIELD_GET(SPECTRAL_TLV_HDR_LEN, __le32_to_cpu(tlv->header)); 594 /* convert Dword into bytes */ 595 tlv_len *= ATH11K_SPECTRAL_DWORD_SIZE; 596 bin_len = tlv_len - ab->hw_params.spectral.fft_hdr_len; 597 598 if (data_len < (bin_len + sizeof(*fft_report))) { 599 ath11k_warn(ab, "mismatch in expected bin len %d and data len %d\n", 600 bin_len, data_len); 601 return -EINVAL; 602 } 603 604 bin_sz = ab->hw_params.spectral.fft_sz + ab->hw_params.spectral.fft_pad_sz; 605 num_bins = bin_len / bin_sz; 606 /* Only In-band bins are useful to user for visualize */ 607 num_bins >>= 1; 608 609 if (num_bins < ATH11K_SPECTRAL_MIN_IB_BINS || 610 num_bins > ATH11K_SPECTRAL_MAX_IB_BINS(ab) || 611 !is_power_of_2(num_bins)) { 612 ath11k_warn(ab, "Invalid num of bins %d\n", num_bins); 613 return -EINVAL; 614 } 615 616 check_length = sizeof(*fft_report) + (num_bins * ab->hw_params.spectral.fft_sz); 617 ret = ath11k_dbring_validate_buffer(ar, data, check_length); 618 if (ret) { 619 ath11k_warn(ar->ab, "found magic value in fft data, dropping\n"); 620 return ret; 621 } 622 623 ret = ath11k_spectral_pull_search(ar, data, &search); 624 if (ret) { 625 ath11k_warn(ab, "failed to pull search report %d\n", ret); 626 return ret; 627 } 628 629 chan_width_mhz = summary->meta.ch_width; 630 631 switch (chan_width_mhz) { 632 case ATH11K_SPECTRAL_20MHZ: 633 case ATH11K_SPECTRAL_40MHZ: 634 case ATH11K_SPECTRAL_80MHZ: 635 fft_sample->chan_width_mhz = chan_width_mhz; 636 break; 637 case ATH11K_SPECTRAL_160MHZ: 638 if (ab->hw_params.spectral.fragment_160mhz) { 639 chan_width_mhz /= 2; 640 fragment_sample = true; 641 } 642 fft_sample->chan_width_mhz = chan_width_mhz; 643 break; 644 default: 645 ath11k_warn(ab, "invalid channel width %d\n", chan_width_mhz); 646 return -EINVAL; 647 } 648 649 length = sizeof(*fft_sample) - sizeof(struct fft_sample_tlv) + num_bins; 650 fft_sample->tlv.type = ATH_FFT_SAMPLE_ATH11K; 651 fft_sample->tlv.length = __cpu_to_be16(length); 652 653 fft_sample->tsf = __cpu_to_be32(search.timestamp); 654 fft_sample->max_magnitude = __cpu_to_be16(search.peak_mag); 655 fft_sample->max_index = FIELD_GET(SPECTRAL_FFT_REPORT_INFO0_PEAK_SIGNED_IDX, 656 __le32_to_cpu(fft_report->info0)); 657 658 summary->inb_pwr_db >>= 1; 659 fft_sample->rssi = __cpu_to_be16(summary->inb_pwr_db); 660 fft_sample->noise = __cpu_to_be32(summary->meta.noise_floor[search.chain_idx]); 661 662 freq = summary->meta.freq1; 663 fft_sample->freq1 = __cpu_to_be16(freq); 664 665 freq = summary->meta.freq2; 666 fft_sample->freq2 = __cpu_to_be16(freq); 667 668 /* If freq2 is available then the spectral scan results are fragmented 669 * as primary and secondary 670 */ 671 if (fragment_sample && freq) { 672 if (!ar->spectral.is_primary) 673 fft_sample->freq1 = cpu_to_be16(freq); 674 675 /* We have to toggle the is_primary to handle the next report */ 676 ar->spectral.is_primary = !ar->spectral.is_primary; 677 } 678 679 ath11k_spectral_parse_fft(fft_sample->data, fft_report->bins, num_bins, 680 ab->hw_params.spectral.fft_sz); 681 682 fft_sample->max_exp = ath11k_spectral_get_max_exp(fft_sample->max_index, 683 search.peak_mag, 684 num_bins, 685 fft_sample->data); 686 687 if (ar->spectral.rfs_scan) 688 relay_write(ar->spectral.rfs_scan, fft_sample, 689 length + sizeof(struct fft_sample_tlv)); 690 691 return 0; 692 } 693 694 static int ath11k_spectral_process_data(struct ath11k *ar, 695 struct ath11k_dbring_data *param) 696 { 697 struct ath11k_base *ab = ar->ab; 698 struct spectral_tlv *tlv; 699 struct spectral_summary_fft_report *summary = NULL; 700 struct ath11k_spectral_summary_report summ_rpt; 701 struct fft_sample_ath11k *fft_sample = NULL; 702 u8 *data; 703 u32 data_len, i; 704 u8 sign, tag; 705 int tlv_len, sample_sz; 706 int ret; 707 bool quit = false; 708 709 spin_lock_bh(&ar->spectral.lock); 710 711 if (!ar->spectral.enabled) { 712 ret = -EINVAL; 713 goto unlock; 714 } 715 716 sample_sz = sizeof(*fft_sample) + ATH11K_SPECTRAL_MAX_IB_BINS(ab); 717 fft_sample = kmalloc(sample_sz, GFP_ATOMIC); 718 if (!fft_sample) { 719 ret = -ENOBUFS; 720 goto unlock; 721 } 722 723 data = param->data; 724 data_len = param->data_sz; 725 i = 0; 726 while (!quit && (i < data_len)) { 727 if ((i + sizeof(*tlv)) > data_len) { 728 ath11k_warn(ab, "failed to parse spectral tlv hdr at bytes %d\n", 729 i); 730 ret = -EINVAL; 731 goto err; 732 } 733 734 tlv = (struct spectral_tlv *)&data[i]; 735 sign = FIELD_GET(SPECTRAL_TLV_HDR_SIGN, 736 __le32_to_cpu(tlv->header)); 737 if (sign != ATH11K_SPECTRAL_SIGNATURE) { 738 ath11k_warn(ab, "Invalid sign 0x%x at bytes %d\n", 739 sign, i); 740 ret = -EINVAL; 741 goto err; 742 } 743 744 tlv_len = FIELD_GET(SPECTRAL_TLV_HDR_LEN, 745 __le32_to_cpu(tlv->header)); 746 /* convert Dword into bytes */ 747 tlv_len *= ATH11K_SPECTRAL_DWORD_SIZE; 748 if ((i + sizeof(*tlv) + tlv_len) > data_len) { 749 ath11k_warn(ab, "failed to parse spectral tlv payload at bytes %d tlv_len:%d data_len:%d\n", 750 i, tlv_len, data_len); 751 ret = -EINVAL; 752 goto err; 753 } 754 755 tag = FIELD_GET(SPECTRAL_TLV_HDR_TAG, 756 __le32_to_cpu(tlv->header)); 757 switch (tag) { 758 case ATH11K_SPECTRAL_TAG_SCAN_SUMMARY: 759 /* HW bug in tlv length of summary report, 760 * HW report 3 DWORD size but the data payload 761 * is 4 DWORD size (16 bytes). 762 * Need to remove this workaround once HW bug fixed 763 */ 764 tlv_len = sizeof(*summary) - sizeof(*tlv) + 765 ab->hw_params.spectral.summary_pad_sz; 766 767 if (tlv_len < (sizeof(*summary) - sizeof(*tlv))) { 768 ath11k_warn(ab, "failed to parse spectral summary at bytes %d tlv_len:%d\n", 769 i, tlv_len); 770 ret = -EINVAL; 771 goto err; 772 } 773 774 ret = ath11k_dbring_validate_buffer(ar, data, tlv_len); 775 if (ret) { 776 ath11k_warn(ar->ab, "found magic value in spectral summary, dropping\n"); 777 goto err; 778 } 779 780 summary = (struct spectral_summary_fft_report *)tlv; 781 ath11k_spectral_pull_summary(ar, ¶m->meta, 782 summary, &summ_rpt); 783 break; 784 case ATH11K_SPECTRAL_TAG_SCAN_SEARCH: 785 if (tlv_len < (sizeof(struct spectral_search_fft_report) - 786 sizeof(*tlv))) { 787 ath11k_warn(ab, "failed to parse spectral search fft at bytes %d\n", 788 i); 789 ret = -EINVAL; 790 goto err; 791 } 792 793 memset(fft_sample, 0, sample_sz); 794 ret = ath11k_spectral_process_fft(ar, &summ_rpt, tlv, 795 fft_sample, 796 data_len - i); 797 if (ret) { 798 ath11k_warn(ab, "failed to process spectral fft at bytes %d\n", 799 i); 800 goto err; 801 } 802 quit = true; 803 break; 804 } 805 806 i += sizeof(*tlv) + tlv_len; 807 } 808 809 ret = 0; 810 811 err: 812 kfree(fft_sample); 813 unlock: 814 spin_unlock_bh(&ar->spectral.lock); 815 return ret; 816 } 817 818 static int ath11k_spectral_ring_alloc(struct ath11k *ar, 819 struct ath11k_dbring_cap *db_cap) 820 { 821 struct ath11k_spectral *sp = &ar->spectral; 822 int ret; 823 824 ret = ath11k_dbring_srng_setup(ar, &sp->rx_ring, 825 0, db_cap->min_elem); 826 if (ret) { 827 ath11k_warn(ar->ab, "failed to setup db ring\n"); 828 return ret; 829 } 830 831 ath11k_dbring_set_cfg(ar, &sp->rx_ring, 832 ATH11K_SPECTRAL_NUM_RESP_PER_EVENT, 833 ATH11K_SPECTRAL_EVENT_TIMEOUT_MS, 834 ath11k_spectral_process_data); 835 836 ret = ath11k_dbring_buf_setup(ar, &sp->rx_ring, db_cap); 837 if (ret) { 838 ath11k_warn(ar->ab, "failed to setup db ring buffer\n"); 839 goto srng_cleanup; 840 } 841 842 ret = ath11k_dbring_wmi_cfg_setup(ar, &sp->rx_ring, 843 WMI_DIRECT_BUF_SPECTRAL); 844 if (ret) { 845 ath11k_warn(ar->ab, "failed to setup db ring cfg\n"); 846 goto buffer_cleanup; 847 } 848 849 return 0; 850 851 buffer_cleanup: 852 ath11k_dbring_buf_cleanup(ar, &sp->rx_ring); 853 srng_cleanup: 854 ath11k_dbring_srng_cleanup(ar, &sp->rx_ring); 855 return ret; 856 } 857 858 static inline void ath11k_spectral_ring_free(struct ath11k *ar) 859 { 860 struct ath11k_spectral *sp = &ar->spectral; 861 862 ath11k_dbring_srng_cleanup(ar, &sp->rx_ring); 863 ath11k_dbring_buf_cleanup(ar, &sp->rx_ring); 864 } 865 866 static inline void ath11k_spectral_debug_unregister(struct ath11k *ar) 867 { 868 debugfs_remove(ar->spectral.scan_bins); 869 ar->spectral.scan_bins = NULL; 870 871 debugfs_remove(ar->spectral.scan_count); 872 ar->spectral.scan_count = NULL; 873 874 debugfs_remove(ar->spectral.scan_ctl); 875 ar->spectral.scan_ctl = NULL; 876 877 if (ar->spectral.rfs_scan) { 878 relay_close(ar->spectral.rfs_scan); 879 ar->spectral.rfs_scan = NULL; 880 } 881 } 882 883 int ath11k_spectral_vif_stop(struct ath11k_vif *arvif) 884 { 885 if (!arvif->spectral_enabled) 886 return 0; 887 888 return ath11k_spectral_scan_config(arvif->ar, ATH11K_SPECTRAL_DISABLED); 889 } 890 891 void ath11k_spectral_reset_buffer(struct ath11k *ar) 892 { 893 if (!ar->spectral.enabled) 894 return; 895 896 if (ar->spectral.rfs_scan) 897 relay_reset(ar->spectral.rfs_scan); 898 } 899 900 void ath11k_spectral_deinit(struct ath11k_base *ab) 901 { 902 struct ath11k *ar; 903 struct ath11k_spectral *sp; 904 int i; 905 906 for (i = 0; i < ab->num_radios; i++) { 907 ar = ab->pdevs[i].ar; 908 sp = &ar->spectral; 909 910 if (!sp->enabled) 911 continue; 912 913 mutex_lock(&ar->conf_mutex); 914 ath11k_spectral_scan_config(ar, ATH11K_SPECTRAL_DISABLED); 915 mutex_unlock(&ar->conf_mutex); 916 917 spin_lock_bh(&sp->lock); 918 sp->enabled = false; 919 spin_unlock_bh(&sp->lock); 920 921 ath11k_spectral_debug_unregister(ar); 922 ath11k_spectral_ring_free(ar); 923 } 924 } 925 926 static inline int ath11k_spectral_debug_register(struct ath11k *ar) 927 { 928 int ret; 929 930 ar->spectral.rfs_scan = relay_open("spectral_scan", 931 ar->debug.debugfs_pdev, 932 ATH11K_SPECTRAL_SUB_BUFF_SIZE(ar->ab), 933 ATH11K_SPECTRAL_NUM_SUB_BUF, 934 &rfs_scan_cb, NULL); 935 if (!ar->spectral.rfs_scan) { 936 ath11k_warn(ar->ab, "failed to open relay in pdev %d\n", 937 ar->pdev_idx); 938 return -EINVAL; 939 } 940 941 ar->spectral.scan_ctl = debugfs_create_file("spectral_scan_ctl", 942 0600, 943 ar->debug.debugfs_pdev, ar, 944 &fops_scan_ctl); 945 if (!ar->spectral.scan_ctl) { 946 ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", 947 ar->pdev_idx); 948 ret = -EINVAL; 949 goto debug_unregister; 950 } 951 952 ar->spectral.scan_count = debugfs_create_file("spectral_count", 953 0600, 954 ar->debug.debugfs_pdev, ar, 955 &fops_scan_count); 956 if (!ar->spectral.scan_count) { 957 ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", 958 ar->pdev_idx); 959 ret = -EINVAL; 960 goto debug_unregister; 961 } 962 963 ar->spectral.scan_bins = debugfs_create_file("spectral_bins", 964 0600, 965 ar->debug.debugfs_pdev, ar, 966 &fops_scan_bins); 967 if (!ar->spectral.scan_bins) { 968 ath11k_warn(ar->ab, "failed to open debugfs in pdev %d\n", 969 ar->pdev_idx); 970 ret = -EINVAL; 971 goto debug_unregister; 972 } 973 974 return 0; 975 976 debug_unregister: 977 ath11k_spectral_debug_unregister(ar); 978 return ret; 979 } 980 981 int ath11k_spectral_init(struct ath11k_base *ab) 982 { 983 struct ath11k *ar; 984 struct ath11k_spectral *sp; 985 struct ath11k_dbring_cap db_cap; 986 int ret; 987 int i; 988 989 if (!test_bit(WMI_TLV_SERVICE_FREQINFO_IN_METADATA, 990 ab->wmi_ab.svc_map)) 991 return 0; 992 993 if (!ab->hw_params.spectral.fft_sz) 994 return 0; 995 996 for (i = 0; i < ab->num_radios; i++) { 997 ar = ab->pdevs[i].ar; 998 sp = &ar->spectral; 999 1000 ret = ath11k_dbring_get_cap(ar->ab, ar->pdev_idx, 1001 WMI_DIRECT_BUF_SPECTRAL, 1002 &db_cap); 1003 if (ret) 1004 continue; 1005 1006 idr_init(&sp->rx_ring.bufs_idr); 1007 spin_lock_init(&sp->rx_ring.idr_lock); 1008 spin_lock_init(&sp->lock); 1009 1010 ret = ath11k_spectral_ring_alloc(ar, &db_cap); 1011 if (ret) { 1012 ath11k_warn(ab, "failed to init spectral ring for pdev %d\n", 1013 i); 1014 goto deinit; 1015 } 1016 1017 spin_lock_bh(&sp->lock); 1018 1019 sp->mode = ATH11K_SPECTRAL_DISABLED; 1020 sp->count = ATH11K_WMI_SPECTRAL_COUNT_DEFAULT; 1021 sp->fft_size = ATH11K_WMI_SPECTRAL_FFT_SIZE_DEFAULT; 1022 sp->enabled = true; 1023 1024 spin_unlock_bh(&sp->lock); 1025 1026 ret = ath11k_spectral_debug_register(ar); 1027 if (ret) { 1028 ath11k_warn(ab, "failed to register spectral for pdev %d\n", 1029 i); 1030 goto deinit; 1031 } 1032 } 1033 1034 return 0; 1035 1036 deinit: 1037 ath11k_spectral_deinit(ab); 1038 return ret; 1039 } 1040 1041 enum ath11k_spectral_mode ath11k_spectral_get_mode(struct ath11k *ar) 1042 { 1043 if (ar->spectral.enabled) 1044 return ar->spectral.mode; 1045 else 1046 return ATH11K_SPECTRAL_DISABLED; 1047 } 1048 1049 struct ath11k_dbring *ath11k_spectral_get_dbring(struct ath11k *ar) 1050 { 1051 if (ar->spectral.enabled) 1052 return &ar->spectral.rx_ring; 1053 else 1054 return NULL; 1055 } 1056