1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This file is part of wl1271 4 * 5 * Copyright (C) 2009 Nokia Corporation 6 * 7 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 8 */ 9 10 #include "debugfs.h" 11 12 #include <linux/skbuff.h> 13 #include <linux/slab.h> 14 #include <linux/module.h> 15 #include <linux/pm_runtime.h> 16 17 #include "wlcore.h" 18 #include "debug.h" 19 #include "acx.h" 20 #include "ps.h" 21 #include "io.h" 22 #include "tx.h" 23 #include "hw_ops.h" 24 25 /* ms */ 26 #define WL1271_DEBUGFS_STATS_LIFETIME 1000 27 28 #define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*PAGE_SIZE)) 29 30 /* debugfs macros idea from mac80211 */ 31 int wl1271_format_buffer(char __user *userbuf, size_t count, 32 loff_t *ppos, char *fmt, ...) 33 { 34 va_list args; 35 char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; 36 int res; 37 38 va_start(args, fmt); 39 res = vscnprintf(buf, sizeof(buf), fmt, args); 40 va_end(args); 41 42 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 43 } 44 EXPORT_SYMBOL_GPL(wl1271_format_buffer); 45 46 void wl1271_debugfs_update_stats(struct wl1271 *wl) 47 { 48 int ret; 49 50 mutex_lock(&wl->mutex); 51 52 if (unlikely(wl->state != WLCORE_STATE_ON)) 53 goto out; 54 55 ret = pm_runtime_get_sync(wl->dev); 56 if (ret < 0) { 57 pm_runtime_put_noidle(wl->dev); 58 goto out; 59 } 60 61 if (!wl->plt && 62 time_after(jiffies, wl->stats.fw_stats_update + 63 msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) { 64 wl1271_acx_statistics(wl, wl->stats.fw_stats); 65 wl->stats.fw_stats_update = jiffies; 66 } 67 68 pm_runtime_mark_last_busy(wl->dev); 69 pm_runtime_put_autosuspend(wl->dev); 70 71 out: 72 mutex_unlock(&wl->mutex); 73 } 74 EXPORT_SYMBOL_GPL(wl1271_debugfs_update_stats); 75 76 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count); 77 DEBUGFS_READONLY_FILE(excessive_retries, "%u", 78 wl->stats.excessive_retries); 79 80 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf, 81 size_t count, loff_t *ppos) 82 { 83 struct wl1271 *wl = file->private_data; 84 u32 queue_len; 85 char buf[20]; 86 int res; 87 88 queue_len = wl1271_tx_total_queue_count(wl); 89 90 res = scnprintf(buf, sizeof(buf), "%u\n", queue_len); 91 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 92 } 93 94 static const struct file_operations tx_queue_len_ops = { 95 .read = tx_queue_len_read, 96 .open = simple_open, 97 .llseek = default_llseek, 98 }; 99 100 static void chip_op_handler(struct wl1271 *wl, unsigned long value, 101 void *arg) 102 { 103 int ret; 104 int (*chip_op) (struct wl1271 *wl); 105 106 if (!arg) { 107 wl1271_warning("debugfs chip_op_handler with no callback"); 108 return; 109 } 110 111 ret = pm_runtime_get_sync(wl->dev); 112 if (ret < 0) { 113 pm_runtime_put_noidle(wl->dev); 114 115 return; 116 } 117 118 chip_op = arg; 119 chip_op(wl); 120 121 pm_runtime_mark_last_busy(wl->dev); 122 pm_runtime_put_autosuspend(wl->dev); 123 } 124 125 126 static inline void no_write_handler(struct wl1271 *wl, 127 unsigned long value, 128 unsigned long param) 129 { 130 } 131 132 #define WL12XX_CONF_DEBUGFS(param, conf_sub_struct, \ 133 min_val, max_val, write_handler_locked, \ 134 write_handler_arg) \ 135 static ssize_t param##_read(struct file *file, \ 136 char __user *user_buf, \ 137 size_t count, loff_t *ppos) \ 138 { \ 139 struct wl1271 *wl = file->private_data; \ 140 return wl1271_format_buffer(user_buf, count, \ 141 ppos, "%d\n", \ 142 wl->conf.conf_sub_struct.param); \ 143 } \ 144 \ 145 static ssize_t param##_write(struct file *file, \ 146 const char __user *user_buf, \ 147 size_t count, loff_t *ppos) \ 148 { \ 149 struct wl1271 *wl = file->private_data; \ 150 unsigned long value; \ 151 int ret; \ 152 \ 153 ret = kstrtoul_from_user(user_buf, count, 10, &value); \ 154 if (ret < 0) { \ 155 wl1271_warning("illegal value for " #param); \ 156 return -EINVAL; \ 157 } \ 158 \ 159 if (value < min_val || value > max_val) { \ 160 wl1271_warning(#param " is not in valid range"); \ 161 return -ERANGE; \ 162 } \ 163 \ 164 mutex_lock(&wl->mutex); \ 165 wl->conf.conf_sub_struct.param = value; \ 166 \ 167 write_handler_locked(wl, value, write_handler_arg); \ 168 \ 169 mutex_unlock(&wl->mutex); \ 170 return count; \ 171 } \ 172 \ 173 static const struct file_operations param##_ops = { \ 174 .read = param##_read, \ 175 .write = param##_write, \ 176 .open = simple_open, \ 177 .llseek = default_llseek, \ 178 }; 179 180 WL12XX_CONF_DEBUGFS(irq_pkt_threshold, rx, 0, 65535, 181 chip_op_handler, wl1271_acx_init_rx_interrupt) 182 WL12XX_CONF_DEBUGFS(irq_blk_threshold, rx, 0, 65535, 183 chip_op_handler, wl1271_acx_init_rx_interrupt) 184 WL12XX_CONF_DEBUGFS(irq_timeout, rx, 0, 100, 185 chip_op_handler, wl1271_acx_init_rx_interrupt) 186 187 static ssize_t gpio_power_read(struct file *file, char __user *user_buf, 188 size_t count, loff_t *ppos) 189 { 190 struct wl1271 *wl = file->private_data; 191 bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); 192 193 int res; 194 char buf[10]; 195 196 res = scnprintf(buf, sizeof(buf), "%d\n", state); 197 198 return simple_read_from_buffer(user_buf, count, ppos, buf, res); 199 } 200 201 static ssize_t gpio_power_write(struct file *file, 202 const char __user *user_buf, 203 size_t count, loff_t *ppos) 204 { 205 struct wl1271 *wl = file->private_data; 206 unsigned long value; 207 int ret; 208 209 ret = kstrtoul_from_user(user_buf, count, 10, &value); 210 if (ret < 0) { 211 wl1271_warning("illegal value in gpio_power"); 212 return -EINVAL; 213 } 214 215 mutex_lock(&wl->mutex); 216 217 if (value) 218 wl1271_power_on(wl); 219 else 220 wl1271_power_off(wl); 221 222 mutex_unlock(&wl->mutex); 223 return count; 224 } 225 226 static const struct file_operations gpio_power_ops = { 227 .read = gpio_power_read, 228 .write = gpio_power_write, 229 .open = simple_open, 230 .llseek = default_llseek, 231 }; 232 233 static ssize_t start_recovery_write(struct file *file, 234 const char __user *user_buf, 235 size_t count, loff_t *ppos) 236 { 237 struct wl1271 *wl = file->private_data; 238 239 mutex_lock(&wl->mutex); 240 wl12xx_queue_recovery_work(wl); 241 mutex_unlock(&wl->mutex); 242 243 return count; 244 } 245 246 static const struct file_operations start_recovery_ops = { 247 .write = start_recovery_write, 248 .open = simple_open, 249 .llseek = default_llseek, 250 }; 251 252 static ssize_t dynamic_ps_timeout_read(struct file *file, char __user *user_buf, 253 size_t count, loff_t *ppos) 254 { 255 struct wl1271 *wl = file->private_data; 256 257 return wl1271_format_buffer(user_buf, count, 258 ppos, "%d\n", 259 wl->conf.conn.dynamic_ps_timeout); 260 } 261 262 static ssize_t dynamic_ps_timeout_write(struct file *file, 263 const char __user *user_buf, 264 size_t count, loff_t *ppos) 265 { 266 struct wl1271 *wl = file->private_data; 267 struct wl12xx_vif *wlvif; 268 unsigned long value; 269 int ret; 270 271 ret = kstrtoul_from_user(user_buf, count, 10, &value); 272 if (ret < 0) { 273 wl1271_warning("illegal value in dynamic_ps"); 274 return -EINVAL; 275 } 276 277 if (value < 1 || value > 65535) { 278 wl1271_warning("dynamic_ps_timeout is not in valid range"); 279 return -ERANGE; 280 } 281 282 mutex_lock(&wl->mutex); 283 284 wl->conf.conn.dynamic_ps_timeout = value; 285 286 if (unlikely(wl->state != WLCORE_STATE_ON)) 287 goto out; 288 289 ret = pm_runtime_get_sync(wl->dev); 290 if (ret < 0) { 291 pm_runtime_put_noidle(wl->dev); 292 goto out; 293 } 294 295 /* In case we're already in PSM, trigger it again to set new timeout 296 * immediately without waiting for re-association 297 */ 298 299 wl12xx_for_each_wlvif_sta(wl, wlvif) { 300 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) 301 wl1271_ps_set_mode(wl, wlvif, STATION_AUTO_PS_MODE); 302 } 303 304 pm_runtime_mark_last_busy(wl->dev); 305 pm_runtime_put_autosuspend(wl->dev); 306 307 out: 308 mutex_unlock(&wl->mutex); 309 return count; 310 } 311 312 static const struct file_operations dynamic_ps_timeout_ops = { 313 .read = dynamic_ps_timeout_read, 314 .write = dynamic_ps_timeout_write, 315 .open = simple_open, 316 .llseek = default_llseek, 317 }; 318 319 static ssize_t forced_ps_read(struct file *file, char __user *user_buf, 320 size_t count, loff_t *ppos) 321 { 322 struct wl1271 *wl = file->private_data; 323 324 return wl1271_format_buffer(user_buf, count, 325 ppos, "%d\n", 326 wl->conf.conn.forced_ps); 327 } 328 329 static ssize_t forced_ps_write(struct file *file, 330 const char __user *user_buf, 331 size_t count, loff_t *ppos) 332 { 333 struct wl1271 *wl = file->private_data; 334 struct wl12xx_vif *wlvif; 335 unsigned long value; 336 int ret, ps_mode; 337 338 ret = kstrtoul_from_user(user_buf, count, 10, &value); 339 if (ret < 0) { 340 wl1271_warning("illegal value in forced_ps"); 341 return -EINVAL; 342 } 343 344 if (value != 1 && value != 0) { 345 wl1271_warning("forced_ps should be either 0 or 1"); 346 return -ERANGE; 347 } 348 349 mutex_lock(&wl->mutex); 350 351 if (wl->conf.conn.forced_ps == value) 352 goto out; 353 354 wl->conf.conn.forced_ps = value; 355 356 if (unlikely(wl->state != WLCORE_STATE_ON)) 357 goto out; 358 359 ret = pm_runtime_get_sync(wl->dev); 360 if (ret < 0) { 361 pm_runtime_put_noidle(wl->dev); 362 goto out; 363 } 364 365 /* In case we're already in PSM, trigger it again to switch mode 366 * immediately without waiting for re-association 367 */ 368 369 ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE; 370 371 wl12xx_for_each_wlvif_sta(wl, wlvif) { 372 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) 373 wl1271_ps_set_mode(wl, wlvif, ps_mode); 374 } 375 376 pm_runtime_mark_last_busy(wl->dev); 377 pm_runtime_put_autosuspend(wl->dev); 378 379 out: 380 mutex_unlock(&wl->mutex); 381 return count; 382 } 383 384 static const struct file_operations forced_ps_ops = { 385 .read = forced_ps_read, 386 .write = forced_ps_write, 387 .open = simple_open, 388 .llseek = default_llseek, 389 }; 390 391 static ssize_t split_scan_timeout_read(struct file *file, char __user *user_buf, 392 size_t count, loff_t *ppos) 393 { 394 struct wl1271 *wl = file->private_data; 395 396 return wl1271_format_buffer(user_buf, count, 397 ppos, "%d\n", 398 wl->conf.scan.split_scan_timeout / 1000); 399 } 400 401 static ssize_t split_scan_timeout_write(struct file *file, 402 const char __user *user_buf, 403 size_t count, loff_t *ppos) 404 { 405 struct wl1271 *wl = file->private_data; 406 unsigned long value; 407 int ret; 408 409 ret = kstrtoul_from_user(user_buf, count, 10, &value); 410 if (ret < 0) { 411 wl1271_warning("illegal value in split_scan_timeout"); 412 return -EINVAL; 413 } 414 415 if (value == 0) 416 wl1271_info("split scan will be disabled"); 417 418 mutex_lock(&wl->mutex); 419 420 wl->conf.scan.split_scan_timeout = value * 1000; 421 422 mutex_unlock(&wl->mutex); 423 return count; 424 } 425 426 static const struct file_operations split_scan_timeout_ops = { 427 .read = split_scan_timeout_read, 428 .write = split_scan_timeout_write, 429 .open = simple_open, 430 .llseek = default_llseek, 431 }; 432 433 static ssize_t driver_state_read(struct file *file, char __user *user_buf, 434 size_t count, loff_t *ppos) 435 { 436 struct wl1271 *wl = file->private_data; 437 int res = 0; 438 ssize_t ret; 439 char *buf; 440 struct wl12xx_vif *wlvif; 441 442 #define DRIVER_STATE_BUF_LEN 1024 443 444 buf = kmalloc(DRIVER_STATE_BUF_LEN, GFP_KERNEL); 445 if (!buf) 446 return -ENOMEM; 447 448 mutex_lock(&wl->mutex); 449 450 #define DRIVER_STATE_PRINT(x, fmt) \ 451 (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\ 452 #x " = " fmt "\n", wl->x)) 453 454 #define DRIVER_STATE_PRINT_GENERIC(x, fmt, args...) \ 455 (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\ 456 #x " = " fmt "\n", args)) 457 458 #define DRIVER_STATE_PRINT_LONG(x) DRIVER_STATE_PRINT(x, "%ld") 459 #define DRIVER_STATE_PRINT_INT(x) DRIVER_STATE_PRINT(x, "%d") 460 #define DRIVER_STATE_PRINT_STR(x) DRIVER_STATE_PRINT(x, "%s") 461 #define DRIVER_STATE_PRINT_LHEX(x) DRIVER_STATE_PRINT(x, "0x%lx") 462 #define DRIVER_STATE_PRINT_HEX(x) DRIVER_STATE_PRINT(x, "0x%x") 463 464 wl12xx_for_each_wlvif_sta(wl, wlvif) { 465 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) 466 continue; 467 468 DRIVER_STATE_PRINT_GENERIC(channel, "%d (%s)", wlvif->channel, 469 wlvif->p2p ? "P2P-CL" : "STA"); 470 } 471 472 wl12xx_for_each_wlvif_ap(wl, wlvif) 473 DRIVER_STATE_PRINT_GENERIC(channel, "%d (%s)", wlvif->channel, 474 wlvif->p2p ? "P2P-GO" : "AP"); 475 476 DRIVER_STATE_PRINT_INT(tx_blocks_available); 477 DRIVER_STATE_PRINT_INT(tx_allocated_blocks); 478 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[0]); 479 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[1]); 480 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[2]); 481 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[3]); 482 DRIVER_STATE_PRINT_INT(tx_frames_cnt); 483 DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]); 484 DRIVER_STATE_PRINT_INT(tx_queue_count[0]); 485 DRIVER_STATE_PRINT_INT(tx_queue_count[1]); 486 DRIVER_STATE_PRINT_INT(tx_queue_count[2]); 487 DRIVER_STATE_PRINT_INT(tx_queue_count[3]); 488 DRIVER_STATE_PRINT_INT(tx_packets_count); 489 DRIVER_STATE_PRINT_INT(tx_results_count); 490 DRIVER_STATE_PRINT_LHEX(flags); 491 DRIVER_STATE_PRINT_INT(tx_blocks_freed); 492 DRIVER_STATE_PRINT_INT(rx_counter); 493 DRIVER_STATE_PRINT_INT(state); 494 DRIVER_STATE_PRINT_INT(band); 495 DRIVER_STATE_PRINT_INT(power_level); 496 DRIVER_STATE_PRINT_INT(sg_enabled); 497 DRIVER_STATE_PRINT_INT(enable_11a); 498 DRIVER_STATE_PRINT_INT(noise); 499 DRIVER_STATE_PRINT_LHEX(ap_fw_ps_map); 500 DRIVER_STATE_PRINT_LHEX(ap_ps_map); 501 DRIVER_STATE_PRINT_HEX(quirks); 502 DRIVER_STATE_PRINT_HEX(irq); 503 /* TODO: ref_clock and tcxo_clock were moved to wl12xx priv */ 504 DRIVER_STATE_PRINT_HEX(hw_pg_ver); 505 DRIVER_STATE_PRINT_HEX(irq_flags); 506 DRIVER_STATE_PRINT_HEX(chip.id); 507 DRIVER_STATE_PRINT_STR(chip.fw_ver_str); 508 DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str); 509 DRIVER_STATE_PRINT_INT(recovery_count); 510 511 #undef DRIVER_STATE_PRINT_INT 512 #undef DRIVER_STATE_PRINT_LONG 513 #undef DRIVER_STATE_PRINT_HEX 514 #undef DRIVER_STATE_PRINT_LHEX 515 #undef DRIVER_STATE_PRINT_STR 516 #undef DRIVER_STATE_PRINT 517 #undef DRIVER_STATE_BUF_LEN 518 519 mutex_unlock(&wl->mutex); 520 521 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res); 522 kfree(buf); 523 return ret; 524 } 525 526 static const struct file_operations driver_state_ops = { 527 .read = driver_state_read, 528 .open = simple_open, 529 .llseek = default_llseek, 530 }; 531 532 static ssize_t vifs_state_read(struct file *file, char __user *user_buf, 533 size_t count, loff_t *ppos) 534 { 535 struct wl1271 *wl = file->private_data; 536 struct wl12xx_vif *wlvif; 537 int ret, res = 0; 538 const int buf_size = 4096; 539 char *buf; 540 char tmp_buf[64]; 541 542 buf = kzalloc(buf_size, GFP_KERNEL); 543 if (!buf) 544 return -ENOMEM; 545 546 mutex_lock(&wl->mutex); 547 548 #define VIF_STATE_PRINT(x, fmt) \ 549 (res += scnprintf(buf + res, buf_size - res, \ 550 #x " = " fmt "\n", wlvif->x)) 551 552 #define VIF_STATE_PRINT_LONG(x) VIF_STATE_PRINT(x, "%ld") 553 #define VIF_STATE_PRINT_INT(x) VIF_STATE_PRINT(x, "%d") 554 #define VIF_STATE_PRINT_STR(x) VIF_STATE_PRINT(x, "%s") 555 #define VIF_STATE_PRINT_LHEX(x) VIF_STATE_PRINT(x, "0x%lx") 556 #define VIF_STATE_PRINT_LLHEX(x) VIF_STATE_PRINT(x, "0x%llx") 557 #define VIF_STATE_PRINT_HEX(x) VIF_STATE_PRINT(x, "0x%x") 558 559 #define VIF_STATE_PRINT_NSTR(x, len) \ 560 do { \ 561 memset(tmp_buf, 0, sizeof(tmp_buf)); \ 562 memcpy(tmp_buf, wlvif->x, \ 563 min_t(u8, len, sizeof(tmp_buf) - 1)); \ 564 res += scnprintf(buf + res, buf_size - res, \ 565 #x " = %s\n", tmp_buf); \ 566 } while (0) 567 568 wl12xx_for_each_wlvif(wl, wlvif) { 569 VIF_STATE_PRINT_INT(role_id); 570 VIF_STATE_PRINT_INT(bss_type); 571 VIF_STATE_PRINT_LHEX(flags); 572 VIF_STATE_PRINT_INT(p2p); 573 VIF_STATE_PRINT_INT(dev_role_id); 574 VIF_STATE_PRINT_INT(dev_hlid); 575 576 if (wlvif->bss_type == BSS_TYPE_STA_BSS || 577 wlvif->bss_type == BSS_TYPE_IBSS) { 578 VIF_STATE_PRINT_INT(sta.hlid); 579 VIF_STATE_PRINT_INT(sta.basic_rate_idx); 580 VIF_STATE_PRINT_INT(sta.ap_rate_idx); 581 VIF_STATE_PRINT_INT(sta.p2p_rate_idx); 582 VIF_STATE_PRINT_INT(sta.qos); 583 } else { 584 VIF_STATE_PRINT_INT(ap.global_hlid); 585 VIF_STATE_PRINT_INT(ap.bcast_hlid); 586 VIF_STATE_PRINT_LHEX(ap.sta_hlid_map[0]); 587 VIF_STATE_PRINT_INT(ap.mgmt_rate_idx); 588 VIF_STATE_PRINT_INT(ap.bcast_rate_idx); 589 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[0]); 590 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[1]); 591 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[2]); 592 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[3]); 593 } 594 VIF_STATE_PRINT_INT(last_tx_hlid); 595 VIF_STATE_PRINT_INT(tx_queue_count[0]); 596 VIF_STATE_PRINT_INT(tx_queue_count[1]); 597 VIF_STATE_PRINT_INT(tx_queue_count[2]); 598 VIF_STATE_PRINT_INT(tx_queue_count[3]); 599 VIF_STATE_PRINT_LHEX(links_map[0]); 600 VIF_STATE_PRINT_NSTR(ssid, wlvif->ssid_len); 601 VIF_STATE_PRINT_INT(band); 602 VIF_STATE_PRINT_INT(channel); 603 VIF_STATE_PRINT_HEX(bitrate_masks[0]); 604 VIF_STATE_PRINT_HEX(bitrate_masks[1]); 605 VIF_STATE_PRINT_HEX(basic_rate_set); 606 VIF_STATE_PRINT_HEX(basic_rate); 607 VIF_STATE_PRINT_HEX(rate_set); 608 VIF_STATE_PRINT_INT(beacon_int); 609 VIF_STATE_PRINT_INT(default_key); 610 VIF_STATE_PRINT_INT(aid); 611 VIF_STATE_PRINT_INT(psm_entry_retry); 612 VIF_STATE_PRINT_INT(power_level); 613 VIF_STATE_PRINT_INT(rssi_thold); 614 VIF_STATE_PRINT_INT(last_rssi_event); 615 VIF_STATE_PRINT_INT(ba_support); 616 VIF_STATE_PRINT_INT(ba_allowed); 617 VIF_STATE_PRINT_LLHEX(total_freed_pkts); 618 } 619 620 #undef VIF_STATE_PRINT_INT 621 #undef VIF_STATE_PRINT_LONG 622 #undef VIF_STATE_PRINT_HEX 623 #undef VIF_STATE_PRINT_LHEX 624 #undef VIF_STATE_PRINT_LLHEX 625 #undef VIF_STATE_PRINT_STR 626 #undef VIF_STATE_PRINT_NSTR 627 #undef VIF_STATE_PRINT 628 629 mutex_unlock(&wl->mutex); 630 631 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res); 632 kfree(buf); 633 return ret; 634 } 635 636 static const struct file_operations vifs_state_ops = { 637 .read = vifs_state_read, 638 .open = simple_open, 639 .llseek = default_llseek, 640 }; 641 642 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf, 643 size_t count, loff_t *ppos) 644 { 645 struct wl1271 *wl = file->private_data; 646 u8 value; 647 648 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM || 649 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM) 650 value = wl->conf.conn.listen_interval; 651 else 652 value = 0; 653 654 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 655 } 656 657 static ssize_t dtim_interval_write(struct file *file, 658 const char __user *user_buf, 659 size_t count, loff_t *ppos) 660 { 661 struct wl1271 *wl = file->private_data; 662 unsigned long value; 663 int ret; 664 665 ret = kstrtoul_from_user(user_buf, count, 10, &value); 666 if (ret < 0) { 667 wl1271_warning("illegal value for dtim_interval"); 668 return -EINVAL; 669 } 670 671 if (value < 1 || value > 10) { 672 wl1271_warning("dtim value is not in valid range"); 673 return -ERANGE; 674 } 675 676 mutex_lock(&wl->mutex); 677 678 wl->conf.conn.listen_interval = value; 679 /* for some reason there are different event types for 1 and >1 */ 680 if (value == 1) 681 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM; 682 else 683 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM; 684 685 /* 686 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only 687 * take effect on the next time we enter psm. 688 */ 689 mutex_unlock(&wl->mutex); 690 return count; 691 } 692 693 static const struct file_operations dtim_interval_ops = { 694 .read = dtim_interval_read, 695 .write = dtim_interval_write, 696 .open = simple_open, 697 .llseek = default_llseek, 698 }; 699 700 701 702 static ssize_t suspend_dtim_interval_read(struct file *file, 703 char __user *user_buf, 704 size_t count, loff_t *ppos) 705 { 706 struct wl1271 *wl = file->private_data; 707 u8 value; 708 709 if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM || 710 wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM) 711 value = wl->conf.conn.suspend_listen_interval; 712 else 713 value = 0; 714 715 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 716 } 717 718 static ssize_t suspend_dtim_interval_write(struct file *file, 719 const char __user *user_buf, 720 size_t count, loff_t *ppos) 721 { 722 struct wl1271 *wl = file->private_data; 723 unsigned long value; 724 int ret; 725 726 ret = kstrtoul_from_user(user_buf, count, 10, &value); 727 if (ret < 0) { 728 wl1271_warning("illegal value for suspend_dtim_interval"); 729 return -EINVAL; 730 } 731 732 if (value < 1 || value > 10) { 733 wl1271_warning("suspend_dtim value is not in valid range"); 734 return -ERANGE; 735 } 736 737 mutex_lock(&wl->mutex); 738 739 wl->conf.conn.suspend_listen_interval = value; 740 /* for some reason there are different event types for 1 and >1 */ 741 if (value == 1) 742 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM; 743 else 744 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM; 745 746 mutex_unlock(&wl->mutex); 747 return count; 748 } 749 750 751 static const struct file_operations suspend_dtim_interval_ops = { 752 .read = suspend_dtim_interval_read, 753 .write = suspend_dtim_interval_write, 754 .open = simple_open, 755 .llseek = default_llseek, 756 }; 757 758 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf, 759 size_t count, loff_t *ppos) 760 { 761 struct wl1271 *wl = file->private_data; 762 u8 value; 763 764 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON || 765 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS) 766 value = wl->conf.conn.listen_interval; 767 else 768 value = 0; 769 770 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 771 } 772 773 static ssize_t beacon_interval_write(struct file *file, 774 const char __user *user_buf, 775 size_t count, loff_t *ppos) 776 { 777 struct wl1271 *wl = file->private_data; 778 unsigned long value; 779 int ret; 780 781 ret = kstrtoul_from_user(user_buf, count, 10, &value); 782 if (ret < 0) { 783 wl1271_warning("illegal value for beacon_interval"); 784 return -EINVAL; 785 } 786 787 if (value < 1 || value > 255) { 788 wl1271_warning("beacon interval value is not in valid range"); 789 return -ERANGE; 790 } 791 792 mutex_lock(&wl->mutex); 793 794 wl->conf.conn.listen_interval = value; 795 /* for some reason there are different event types for 1 and >1 */ 796 if (value == 1) 797 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON; 798 else 799 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS; 800 801 /* 802 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only 803 * take effect on the next time we enter psm. 804 */ 805 mutex_unlock(&wl->mutex); 806 return count; 807 } 808 809 static const struct file_operations beacon_interval_ops = { 810 .read = beacon_interval_read, 811 .write = beacon_interval_write, 812 .open = simple_open, 813 .llseek = default_llseek, 814 }; 815 816 static ssize_t rx_streaming_interval_write(struct file *file, 817 const char __user *user_buf, 818 size_t count, loff_t *ppos) 819 { 820 struct wl1271 *wl = file->private_data; 821 struct wl12xx_vif *wlvif; 822 unsigned long value; 823 int ret; 824 825 ret = kstrtoul_from_user(user_buf, count, 10, &value); 826 if (ret < 0) { 827 wl1271_warning("illegal value in rx_streaming_interval!"); 828 return -EINVAL; 829 } 830 831 /* valid values: 0, 10-100 */ 832 if (value && (value < 10 || value > 100)) { 833 wl1271_warning("value is not in range!"); 834 return -ERANGE; 835 } 836 837 mutex_lock(&wl->mutex); 838 839 wl->conf.rx_streaming.interval = value; 840 841 ret = pm_runtime_get_sync(wl->dev); 842 if (ret < 0) { 843 pm_runtime_put_noidle(wl->dev); 844 goto out; 845 } 846 847 wl12xx_for_each_wlvif_sta(wl, wlvif) { 848 wl1271_recalc_rx_streaming(wl, wlvif); 849 } 850 851 pm_runtime_mark_last_busy(wl->dev); 852 pm_runtime_put_autosuspend(wl->dev); 853 out: 854 mutex_unlock(&wl->mutex); 855 return count; 856 } 857 858 static ssize_t rx_streaming_interval_read(struct file *file, 859 char __user *userbuf, 860 size_t count, loff_t *ppos) 861 { 862 struct wl1271 *wl = file->private_data; 863 return wl1271_format_buffer(userbuf, count, ppos, 864 "%d\n", wl->conf.rx_streaming.interval); 865 } 866 867 static const struct file_operations rx_streaming_interval_ops = { 868 .read = rx_streaming_interval_read, 869 .write = rx_streaming_interval_write, 870 .open = simple_open, 871 .llseek = default_llseek, 872 }; 873 874 static ssize_t rx_streaming_always_write(struct file *file, 875 const char __user *user_buf, 876 size_t count, loff_t *ppos) 877 { 878 struct wl1271 *wl = file->private_data; 879 struct wl12xx_vif *wlvif; 880 unsigned long value; 881 int ret; 882 883 ret = kstrtoul_from_user(user_buf, count, 10, &value); 884 if (ret < 0) { 885 wl1271_warning("illegal value in rx_streaming_write!"); 886 return -EINVAL; 887 } 888 889 /* valid values: 0, 10-100 */ 890 if (!(value == 0 || value == 1)) { 891 wl1271_warning("value is not in valid!"); 892 return -EINVAL; 893 } 894 895 mutex_lock(&wl->mutex); 896 897 wl->conf.rx_streaming.always = value; 898 899 ret = pm_runtime_get_sync(wl->dev); 900 if (ret < 0) { 901 pm_runtime_put_noidle(wl->dev); 902 goto out; 903 } 904 905 wl12xx_for_each_wlvif_sta(wl, wlvif) { 906 wl1271_recalc_rx_streaming(wl, wlvif); 907 } 908 909 pm_runtime_mark_last_busy(wl->dev); 910 pm_runtime_put_autosuspend(wl->dev); 911 out: 912 mutex_unlock(&wl->mutex); 913 return count; 914 } 915 916 static ssize_t rx_streaming_always_read(struct file *file, 917 char __user *userbuf, 918 size_t count, loff_t *ppos) 919 { 920 struct wl1271 *wl = file->private_data; 921 return wl1271_format_buffer(userbuf, count, ppos, 922 "%d\n", wl->conf.rx_streaming.always); 923 } 924 925 static const struct file_operations rx_streaming_always_ops = { 926 .read = rx_streaming_always_read, 927 .write = rx_streaming_always_write, 928 .open = simple_open, 929 .llseek = default_llseek, 930 }; 931 932 static ssize_t beacon_filtering_write(struct file *file, 933 const char __user *user_buf, 934 size_t count, loff_t *ppos) 935 { 936 struct wl1271 *wl = file->private_data; 937 struct wl12xx_vif *wlvif; 938 unsigned long value; 939 int ret; 940 941 ret = kstrtoul_from_user(user_buf, count, 0, &value); 942 if (ret < 0) { 943 wl1271_warning("illegal value for beacon_filtering!"); 944 return -EINVAL; 945 } 946 947 mutex_lock(&wl->mutex); 948 949 ret = pm_runtime_get_sync(wl->dev); 950 if (ret < 0) { 951 pm_runtime_put_noidle(wl->dev); 952 goto out; 953 } 954 955 wl12xx_for_each_wlvif(wl, wlvif) { 956 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value); 957 } 958 959 pm_runtime_mark_last_busy(wl->dev); 960 pm_runtime_put_autosuspend(wl->dev); 961 out: 962 mutex_unlock(&wl->mutex); 963 return count; 964 } 965 966 static const struct file_operations beacon_filtering_ops = { 967 .write = beacon_filtering_write, 968 .open = simple_open, 969 .llseek = default_llseek, 970 }; 971 972 static ssize_t fw_stats_raw_read(struct file *file, 973 char __user *userbuf, 974 size_t count, loff_t *ppos) 975 { 976 struct wl1271 *wl = file->private_data; 977 978 wl1271_debugfs_update_stats(wl); 979 980 return simple_read_from_buffer(userbuf, count, ppos, 981 wl->stats.fw_stats, 982 wl->stats.fw_stats_len); 983 } 984 985 static const struct file_operations fw_stats_raw_ops = { 986 .read = fw_stats_raw_read, 987 .open = simple_open, 988 .llseek = default_llseek, 989 }; 990 991 static ssize_t sleep_auth_read(struct file *file, char __user *user_buf, 992 size_t count, loff_t *ppos) 993 { 994 struct wl1271 *wl = file->private_data; 995 996 return wl1271_format_buffer(user_buf, count, 997 ppos, "%d\n", 998 wl->sleep_auth); 999 } 1000 1001 static ssize_t sleep_auth_write(struct file *file, 1002 const char __user *user_buf, 1003 size_t count, loff_t *ppos) 1004 { 1005 struct wl1271 *wl = file->private_data; 1006 unsigned long value; 1007 int ret; 1008 1009 ret = kstrtoul_from_user(user_buf, count, 0, &value); 1010 if (ret < 0) { 1011 wl1271_warning("illegal value in sleep_auth"); 1012 return -EINVAL; 1013 } 1014 1015 if (value > WL1271_PSM_MAX) { 1016 wl1271_warning("sleep_auth must be between 0 and %d", 1017 WL1271_PSM_MAX); 1018 return -ERANGE; 1019 } 1020 1021 mutex_lock(&wl->mutex); 1022 1023 wl->conf.conn.sta_sleep_auth = value; 1024 1025 if (unlikely(wl->state != WLCORE_STATE_ON)) { 1026 /* this will show up on "read" in case we are off */ 1027 wl->sleep_auth = value; 1028 goto out; 1029 } 1030 1031 ret = pm_runtime_get_sync(wl->dev); 1032 if (ret < 0) { 1033 pm_runtime_put_noidle(wl->dev); 1034 goto out; 1035 } 1036 1037 ret = wl1271_acx_sleep_auth(wl, value); 1038 if (ret < 0) 1039 goto out_sleep; 1040 1041 out_sleep: 1042 pm_runtime_mark_last_busy(wl->dev); 1043 pm_runtime_put_autosuspend(wl->dev); 1044 out: 1045 mutex_unlock(&wl->mutex); 1046 return count; 1047 } 1048 1049 static const struct file_operations sleep_auth_ops = { 1050 .read = sleep_auth_read, 1051 .write = sleep_auth_write, 1052 .open = simple_open, 1053 .llseek = default_llseek, 1054 }; 1055 1056 static ssize_t dev_mem_read(struct file *file, 1057 char __user *user_buf, size_t count, 1058 loff_t *ppos) 1059 { 1060 struct wl1271 *wl = file->private_data; 1061 struct wlcore_partition_set part, old_part; 1062 size_t bytes = count; 1063 int ret; 1064 char *buf; 1065 1066 /* only requests of dword-aligned size and offset are supported */ 1067 if (bytes % 4) 1068 return -EINVAL; 1069 1070 if (*ppos % 4) 1071 return -EINVAL; 1072 1073 /* function should return in reasonable time */ 1074 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE); 1075 1076 if (bytes == 0) 1077 return -EINVAL; 1078 1079 memset(&part, 0, sizeof(part)); 1080 part.mem.start = *ppos; 1081 part.mem.size = bytes; 1082 1083 buf = kmalloc(bytes, GFP_KERNEL); 1084 if (!buf) 1085 return -ENOMEM; 1086 1087 mutex_lock(&wl->mutex); 1088 1089 if (unlikely(wl->state == WLCORE_STATE_OFF)) { 1090 ret = -EFAULT; 1091 goto skip_read; 1092 } 1093 1094 /* 1095 * Don't fail if elp_wakeup returns an error, so the device's memory 1096 * could be read even if the FW crashed 1097 */ 1098 pm_runtime_get_sync(wl->dev); 1099 1100 /* store current partition and switch partition */ 1101 memcpy(&old_part, &wl->curr_part, sizeof(old_part)); 1102 ret = wlcore_set_partition(wl, &part); 1103 if (ret < 0) 1104 goto part_err; 1105 1106 ret = wlcore_raw_read(wl, 0, buf, bytes, false); 1107 if (ret < 0) 1108 goto read_err; 1109 1110 read_err: 1111 /* recover partition */ 1112 ret = wlcore_set_partition(wl, &old_part); 1113 if (ret < 0) 1114 goto part_err; 1115 1116 part_err: 1117 pm_runtime_mark_last_busy(wl->dev); 1118 pm_runtime_put_autosuspend(wl->dev); 1119 1120 skip_read: 1121 mutex_unlock(&wl->mutex); 1122 1123 if (ret == 0) { 1124 ret = copy_to_user(user_buf, buf, bytes); 1125 if (ret < bytes) { 1126 bytes -= ret; 1127 *ppos += bytes; 1128 ret = 0; 1129 } else { 1130 ret = -EFAULT; 1131 } 1132 } 1133 1134 kfree(buf); 1135 1136 return ((ret == 0) ? bytes : ret); 1137 } 1138 1139 static ssize_t dev_mem_write(struct file *file, const char __user *user_buf, 1140 size_t count, loff_t *ppos) 1141 { 1142 struct wl1271 *wl = file->private_data; 1143 struct wlcore_partition_set part, old_part; 1144 size_t bytes = count; 1145 int ret; 1146 char *buf; 1147 1148 /* only requests of dword-aligned size and offset are supported */ 1149 if (bytes % 4) 1150 return -EINVAL; 1151 1152 if (*ppos % 4) 1153 return -EINVAL; 1154 1155 /* function should return in reasonable time */ 1156 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE); 1157 1158 if (bytes == 0) 1159 return -EINVAL; 1160 1161 memset(&part, 0, sizeof(part)); 1162 part.mem.start = *ppos; 1163 part.mem.size = bytes; 1164 1165 buf = memdup_user(user_buf, bytes); 1166 if (IS_ERR(buf)) 1167 return PTR_ERR(buf); 1168 1169 mutex_lock(&wl->mutex); 1170 1171 if (unlikely(wl->state == WLCORE_STATE_OFF)) { 1172 ret = -EFAULT; 1173 goto skip_write; 1174 } 1175 1176 /* 1177 * Don't fail if elp_wakeup returns an error, so the device's memory 1178 * could be read even if the FW crashed 1179 */ 1180 pm_runtime_get_sync(wl->dev); 1181 1182 /* store current partition and switch partition */ 1183 memcpy(&old_part, &wl->curr_part, sizeof(old_part)); 1184 ret = wlcore_set_partition(wl, &part); 1185 if (ret < 0) 1186 goto part_err; 1187 1188 ret = wlcore_raw_write(wl, 0, buf, bytes, false); 1189 if (ret < 0) 1190 goto write_err; 1191 1192 write_err: 1193 /* recover partition */ 1194 ret = wlcore_set_partition(wl, &old_part); 1195 if (ret < 0) 1196 goto part_err; 1197 1198 part_err: 1199 pm_runtime_mark_last_busy(wl->dev); 1200 pm_runtime_put_autosuspend(wl->dev); 1201 1202 skip_write: 1203 mutex_unlock(&wl->mutex); 1204 1205 if (ret == 0) 1206 *ppos += bytes; 1207 1208 kfree(buf); 1209 1210 return ((ret == 0) ? bytes : ret); 1211 } 1212 1213 static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig) 1214 { 1215 /* only requests of dword-aligned size and offset are supported */ 1216 if (offset % 4) 1217 return -EINVAL; 1218 1219 return no_seek_end_llseek(file, offset, orig); 1220 } 1221 1222 static const struct file_operations dev_mem_ops = { 1223 .open = simple_open, 1224 .read = dev_mem_read, 1225 .write = dev_mem_write, 1226 .llseek = dev_mem_seek, 1227 }; 1228 1229 static ssize_t fw_logger_read(struct file *file, char __user *user_buf, 1230 size_t count, loff_t *ppos) 1231 { 1232 struct wl1271 *wl = file->private_data; 1233 1234 return wl1271_format_buffer(user_buf, count, 1235 ppos, "%d\n", 1236 wl->conf.fwlog.output); 1237 } 1238 1239 static ssize_t fw_logger_write(struct file *file, 1240 const char __user *user_buf, 1241 size_t count, loff_t *ppos) 1242 { 1243 struct wl1271 *wl = file->private_data; 1244 unsigned long value; 1245 int ret; 1246 1247 ret = kstrtoul_from_user(user_buf, count, 0, &value); 1248 if (ret < 0) { 1249 wl1271_warning("illegal value in fw_logger"); 1250 return -EINVAL; 1251 } 1252 1253 if ((value > 2) || (value == 0)) { 1254 wl1271_warning("fw_logger value must be 1-UART 2-SDIO"); 1255 return -ERANGE; 1256 } 1257 1258 if (wl->conf.fwlog.output == 0) { 1259 wl1271_warning("invalid operation - fw logger disabled by default, please change mode via wlconf"); 1260 return -EINVAL; 1261 } 1262 1263 mutex_lock(&wl->mutex); 1264 ret = pm_runtime_get_sync(wl->dev); 1265 if (ret < 0) { 1266 pm_runtime_put_noidle(wl->dev); 1267 count = ret; 1268 goto out; 1269 } 1270 1271 wl->conf.fwlog.output = value; 1272 1273 ret = wl12xx_cmd_config_fwlog(wl); 1274 1275 pm_runtime_mark_last_busy(wl->dev); 1276 pm_runtime_put_autosuspend(wl->dev); 1277 1278 out: 1279 mutex_unlock(&wl->mutex); 1280 return count; 1281 } 1282 1283 static const struct file_operations fw_logger_ops = { 1284 .open = simple_open, 1285 .read = fw_logger_read, 1286 .write = fw_logger_write, 1287 .llseek = default_llseek, 1288 }; 1289 1290 static void wl1271_debugfs_add_files(struct wl1271 *wl, 1291 struct dentry *rootdir) 1292 { 1293 struct dentry *streaming; 1294 1295 DEBUGFS_ADD(tx_queue_len, rootdir); 1296 DEBUGFS_ADD(retry_count, rootdir); 1297 DEBUGFS_ADD(excessive_retries, rootdir); 1298 1299 DEBUGFS_ADD(gpio_power, rootdir); 1300 DEBUGFS_ADD(start_recovery, rootdir); 1301 DEBUGFS_ADD(driver_state, rootdir); 1302 DEBUGFS_ADD(vifs_state, rootdir); 1303 DEBUGFS_ADD(dtim_interval, rootdir); 1304 DEBUGFS_ADD(suspend_dtim_interval, rootdir); 1305 DEBUGFS_ADD(beacon_interval, rootdir); 1306 DEBUGFS_ADD(beacon_filtering, rootdir); 1307 DEBUGFS_ADD(dynamic_ps_timeout, rootdir); 1308 DEBUGFS_ADD(forced_ps, rootdir); 1309 DEBUGFS_ADD(split_scan_timeout, rootdir); 1310 DEBUGFS_ADD(irq_pkt_threshold, rootdir); 1311 DEBUGFS_ADD(irq_blk_threshold, rootdir); 1312 DEBUGFS_ADD(irq_timeout, rootdir); 1313 DEBUGFS_ADD(fw_stats_raw, rootdir); 1314 DEBUGFS_ADD(sleep_auth, rootdir); 1315 DEBUGFS_ADD(fw_logger, rootdir); 1316 1317 streaming = debugfs_create_dir("rx_streaming", rootdir); 1318 1319 DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming); 1320 DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming); 1321 1322 DEBUGFS_ADD_PREFIX(dev, mem, rootdir); 1323 } 1324 1325 void wl1271_debugfs_reset(struct wl1271 *wl) 1326 { 1327 if (!wl->stats.fw_stats) 1328 return; 1329 1330 memset(wl->stats.fw_stats, 0, wl->stats.fw_stats_len); 1331 wl->stats.retry_count = 0; 1332 wl->stats.excessive_retries = 0; 1333 } 1334 1335 int wl1271_debugfs_init(struct wl1271 *wl) 1336 { 1337 int ret; 1338 struct dentry *rootdir; 1339 1340 rootdir = debugfs_create_dir(KBUILD_MODNAME, 1341 wl->hw->wiphy->debugfsdir); 1342 1343 wl->stats.fw_stats = kzalloc(wl->stats.fw_stats_len, GFP_KERNEL); 1344 if (!wl->stats.fw_stats) { 1345 ret = -ENOMEM; 1346 goto out_remove; 1347 } 1348 1349 wl->stats.fw_stats_update = jiffies; 1350 1351 wl1271_debugfs_add_files(wl, rootdir); 1352 1353 ret = wlcore_debugfs_init(wl, rootdir); 1354 if (ret < 0) 1355 goto out_exit; 1356 1357 goto out; 1358 1359 out_exit: 1360 wl1271_debugfs_exit(wl); 1361 1362 out_remove: 1363 debugfs_remove_recursive(rootdir); 1364 1365 out: 1366 return ret; 1367 } 1368 1369 void wl1271_debugfs_exit(struct wl1271 *wl) 1370 { 1371 kfree(wl->stats.fw_stats); 1372 wl->stats.fw_stats = NULL; 1373 } 1374