1 /* 2 * This file is part of wl1271 3 * 4 * Copyright (C) 2009 Nokia Corporation 5 * 6 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA 21 * 22 */ 23 24 #include "debugfs.h" 25 26 #include <linux/skbuff.h> 27 #include <linux/slab.h> 28 #include <linux/module.h> 29 30 #include "wlcore.h" 31 #include "debug.h" 32 #include "acx.h" 33 #include "ps.h" 34 #include "io.h" 35 #include "tx.h" 36 #include "hw_ops.h" 37 38 /* ms */ 39 #define WL1271_DEBUGFS_STATS_LIFETIME 1000 40 41 #define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*PAGE_SIZE)) 42 43 /* debugfs macros idea from mac80211 */ 44 int wl1271_format_buffer(char __user *userbuf, size_t count, 45 loff_t *ppos, char *fmt, ...) 46 { 47 va_list args; 48 char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; 49 int res; 50 51 va_start(args, fmt); 52 res = vscnprintf(buf, sizeof(buf), fmt, args); 53 va_end(args); 54 55 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 56 } 57 EXPORT_SYMBOL_GPL(wl1271_format_buffer); 58 59 void wl1271_debugfs_update_stats(struct wl1271 *wl) 60 { 61 int ret; 62 63 mutex_lock(&wl->mutex); 64 65 if (unlikely(wl->state != WLCORE_STATE_ON)) 66 goto out; 67 68 ret = wl1271_ps_elp_wakeup(wl); 69 if (ret < 0) 70 goto out; 71 72 if (!wl->plt && 73 time_after(jiffies, wl->stats.fw_stats_update + 74 msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) { 75 wl1271_acx_statistics(wl, wl->stats.fw_stats); 76 wl->stats.fw_stats_update = jiffies; 77 } 78 79 wl1271_ps_elp_sleep(wl); 80 81 out: 82 mutex_unlock(&wl->mutex); 83 } 84 EXPORT_SYMBOL_GPL(wl1271_debugfs_update_stats); 85 86 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count); 87 DEBUGFS_READONLY_FILE(excessive_retries, "%u", 88 wl->stats.excessive_retries); 89 90 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf, 91 size_t count, loff_t *ppos) 92 { 93 struct wl1271 *wl = file->private_data; 94 u32 queue_len; 95 char buf[20]; 96 int res; 97 98 queue_len = wl1271_tx_total_queue_count(wl); 99 100 res = scnprintf(buf, sizeof(buf), "%u\n", queue_len); 101 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 102 } 103 104 static const struct file_operations tx_queue_len_ops = { 105 .read = tx_queue_len_read, 106 .open = simple_open, 107 .llseek = default_llseek, 108 }; 109 110 static void chip_op_handler(struct wl1271 *wl, unsigned long value, 111 void *arg) 112 { 113 int ret; 114 int (*chip_op) (struct wl1271 *wl); 115 116 if (!arg) { 117 wl1271_warning("debugfs chip_op_handler with no callback"); 118 return; 119 } 120 121 ret = wl1271_ps_elp_wakeup(wl); 122 if (ret < 0) 123 return; 124 125 chip_op = arg; 126 chip_op(wl); 127 128 wl1271_ps_elp_sleep(wl); 129 } 130 131 132 static inline void no_write_handler(struct wl1271 *wl, 133 unsigned long value, 134 unsigned long param) 135 { 136 } 137 138 #define WL12XX_CONF_DEBUGFS(param, conf_sub_struct, \ 139 min_val, max_val, write_handler_locked, \ 140 write_handler_arg) \ 141 static ssize_t param##_read(struct file *file, \ 142 char __user *user_buf, \ 143 size_t count, loff_t *ppos) \ 144 { \ 145 struct wl1271 *wl = file->private_data; \ 146 return wl1271_format_buffer(user_buf, count, \ 147 ppos, "%d\n", \ 148 wl->conf.conf_sub_struct.param); \ 149 } \ 150 \ 151 static ssize_t param##_write(struct file *file, \ 152 const char __user *user_buf, \ 153 size_t count, loff_t *ppos) \ 154 { \ 155 struct wl1271 *wl = file->private_data; \ 156 unsigned long value; \ 157 int ret; \ 158 \ 159 ret = kstrtoul_from_user(user_buf, count, 10, &value); \ 160 if (ret < 0) { \ 161 wl1271_warning("illegal value for " #param); \ 162 return -EINVAL; \ 163 } \ 164 \ 165 if (value < min_val || value > max_val) { \ 166 wl1271_warning(#param " is not in valid range"); \ 167 return -ERANGE; \ 168 } \ 169 \ 170 mutex_lock(&wl->mutex); \ 171 wl->conf.conf_sub_struct.param = value; \ 172 \ 173 write_handler_locked(wl, value, write_handler_arg); \ 174 \ 175 mutex_unlock(&wl->mutex); \ 176 return count; \ 177 } \ 178 \ 179 static const struct file_operations param##_ops = { \ 180 .read = param##_read, \ 181 .write = param##_write, \ 182 .open = simple_open, \ 183 .llseek = default_llseek, \ 184 }; 185 186 WL12XX_CONF_DEBUGFS(irq_pkt_threshold, rx, 0, 65535, 187 chip_op_handler, wl1271_acx_init_rx_interrupt) 188 WL12XX_CONF_DEBUGFS(irq_blk_threshold, rx, 0, 65535, 189 chip_op_handler, wl1271_acx_init_rx_interrupt) 190 WL12XX_CONF_DEBUGFS(irq_timeout, rx, 0, 100, 191 chip_op_handler, wl1271_acx_init_rx_interrupt) 192 193 static ssize_t gpio_power_read(struct file *file, char __user *user_buf, 194 size_t count, loff_t *ppos) 195 { 196 struct wl1271 *wl = file->private_data; 197 bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); 198 199 int res; 200 char buf[10]; 201 202 res = scnprintf(buf, sizeof(buf), "%d\n", state); 203 204 return simple_read_from_buffer(user_buf, count, ppos, buf, res); 205 } 206 207 static ssize_t gpio_power_write(struct file *file, 208 const char __user *user_buf, 209 size_t count, loff_t *ppos) 210 { 211 struct wl1271 *wl = file->private_data; 212 unsigned long value; 213 int ret; 214 215 ret = kstrtoul_from_user(user_buf, count, 10, &value); 216 if (ret < 0) { 217 wl1271_warning("illegal value in gpio_power"); 218 return -EINVAL; 219 } 220 221 mutex_lock(&wl->mutex); 222 223 if (value) 224 wl1271_power_on(wl); 225 else 226 wl1271_power_off(wl); 227 228 mutex_unlock(&wl->mutex); 229 return count; 230 } 231 232 static const struct file_operations gpio_power_ops = { 233 .read = gpio_power_read, 234 .write = gpio_power_write, 235 .open = simple_open, 236 .llseek = default_llseek, 237 }; 238 239 static ssize_t start_recovery_write(struct file *file, 240 const char __user *user_buf, 241 size_t count, loff_t *ppos) 242 { 243 struct wl1271 *wl = file->private_data; 244 245 mutex_lock(&wl->mutex); 246 wl12xx_queue_recovery_work(wl); 247 mutex_unlock(&wl->mutex); 248 249 return count; 250 } 251 252 static const struct file_operations start_recovery_ops = { 253 .write = start_recovery_write, 254 .open = simple_open, 255 .llseek = default_llseek, 256 }; 257 258 static ssize_t dynamic_ps_timeout_read(struct file *file, char __user *user_buf, 259 size_t count, loff_t *ppos) 260 { 261 struct wl1271 *wl = file->private_data; 262 263 return wl1271_format_buffer(user_buf, count, 264 ppos, "%d\n", 265 wl->conf.conn.dynamic_ps_timeout); 266 } 267 268 static ssize_t dynamic_ps_timeout_write(struct file *file, 269 const char __user *user_buf, 270 size_t count, loff_t *ppos) 271 { 272 struct wl1271 *wl = file->private_data; 273 struct wl12xx_vif *wlvif; 274 unsigned long value; 275 int ret; 276 277 ret = kstrtoul_from_user(user_buf, count, 10, &value); 278 if (ret < 0) { 279 wl1271_warning("illegal value in dynamic_ps"); 280 return -EINVAL; 281 } 282 283 if (value < 1 || value > 65535) { 284 wl1271_warning("dyanmic_ps_timeout is not in valid range"); 285 return -ERANGE; 286 } 287 288 mutex_lock(&wl->mutex); 289 290 wl->conf.conn.dynamic_ps_timeout = value; 291 292 if (unlikely(wl->state != WLCORE_STATE_ON)) 293 goto out; 294 295 ret = wl1271_ps_elp_wakeup(wl); 296 if (ret < 0) 297 goto out; 298 299 /* In case we're already in PSM, trigger it again to set new timeout 300 * immediately without waiting for re-association 301 */ 302 303 wl12xx_for_each_wlvif_sta(wl, wlvif) { 304 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) 305 wl1271_ps_set_mode(wl, wlvif, STATION_AUTO_PS_MODE); 306 } 307 308 wl1271_ps_elp_sleep(wl); 309 310 out: 311 mutex_unlock(&wl->mutex); 312 return count; 313 } 314 315 static const struct file_operations dynamic_ps_timeout_ops = { 316 .read = dynamic_ps_timeout_read, 317 .write = dynamic_ps_timeout_write, 318 .open = simple_open, 319 .llseek = default_llseek, 320 }; 321 322 static ssize_t forced_ps_read(struct file *file, char __user *user_buf, 323 size_t count, loff_t *ppos) 324 { 325 struct wl1271 *wl = file->private_data; 326 327 return wl1271_format_buffer(user_buf, count, 328 ppos, "%d\n", 329 wl->conf.conn.forced_ps); 330 } 331 332 static ssize_t forced_ps_write(struct file *file, 333 const char __user *user_buf, 334 size_t count, loff_t *ppos) 335 { 336 struct wl1271 *wl = file->private_data; 337 struct wl12xx_vif *wlvif; 338 unsigned long value; 339 int ret, ps_mode; 340 341 ret = kstrtoul_from_user(user_buf, count, 10, &value); 342 if (ret < 0) { 343 wl1271_warning("illegal value in forced_ps"); 344 return -EINVAL; 345 } 346 347 if (value != 1 && value != 0) { 348 wl1271_warning("forced_ps should be either 0 or 1"); 349 return -ERANGE; 350 } 351 352 mutex_lock(&wl->mutex); 353 354 if (wl->conf.conn.forced_ps == value) 355 goto out; 356 357 wl->conf.conn.forced_ps = value; 358 359 if (unlikely(wl->state != WLCORE_STATE_ON)) 360 goto out; 361 362 ret = wl1271_ps_elp_wakeup(wl); 363 if (ret < 0) 364 goto out; 365 366 /* In case we're already in PSM, trigger it again to switch mode 367 * immediately without waiting for re-association 368 */ 369 370 ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE; 371 372 wl12xx_for_each_wlvif_sta(wl, wlvif) { 373 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) 374 wl1271_ps_set_mode(wl, wlvif, ps_mode); 375 } 376 377 wl1271_ps_elp_sleep(wl); 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; 440 441 #define DRIVER_STATE_BUF_LEN 1024 442 443 buf = kmalloc(DRIVER_STATE_BUF_LEN, GFP_KERNEL); 444 if (!buf) 445 return -ENOMEM; 446 447 mutex_lock(&wl->mutex); 448 449 #define DRIVER_STATE_PRINT(x, fmt) \ 450 (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\ 451 #x " = " fmt "\n", wl->x)) 452 453 #define DRIVER_STATE_PRINT_LONG(x) DRIVER_STATE_PRINT(x, "%ld") 454 #define DRIVER_STATE_PRINT_INT(x) DRIVER_STATE_PRINT(x, "%d") 455 #define DRIVER_STATE_PRINT_STR(x) DRIVER_STATE_PRINT(x, "%s") 456 #define DRIVER_STATE_PRINT_LHEX(x) DRIVER_STATE_PRINT(x, "0x%lx") 457 #define DRIVER_STATE_PRINT_HEX(x) DRIVER_STATE_PRINT(x, "0x%x") 458 459 DRIVER_STATE_PRINT_INT(tx_blocks_available); 460 DRIVER_STATE_PRINT_INT(tx_allocated_blocks); 461 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[0]); 462 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[1]); 463 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[2]); 464 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[3]); 465 DRIVER_STATE_PRINT_INT(tx_frames_cnt); 466 DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]); 467 DRIVER_STATE_PRINT_INT(tx_queue_count[0]); 468 DRIVER_STATE_PRINT_INT(tx_queue_count[1]); 469 DRIVER_STATE_PRINT_INT(tx_queue_count[2]); 470 DRIVER_STATE_PRINT_INT(tx_queue_count[3]); 471 DRIVER_STATE_PRINT_INT(tx_packets_count); 472 DRIVER_STATE_PRINT_INT(tx_results_count); 473 DRIVER_STATE_PRINT_LHEX(flags); 474 DRIVER_STATE_PRINT_INT(tx_blocks_freed); 475 DRIVER_STATE_PRINT_INT(rx_counter); 476 DRIVER_STATE_PRINT_INT(state); 477 DRIVER_STATE_PRINT_INT(channel); 478 DRIVER_STATE_PRINT_INT(band); 479 DRIVER_STATE_PRINT_INT(power_level); 480 DRIVER_STATE_PRINT_INT(sg_enabled); 481 DRIVER_STATE_PRINT_INT(enable_11a); 482 DRIVER_STATE_PRINT_INT(noise); 483 DRIVER_STATE_PRINT_HEX(ap_fw_ps_map); 484 DRIVER_STATE_PRINT_LHEX(ap_ps_map); 485 DRIVER_STATE_PRINT_HEX(quirks); 486 DRIVER_STATE_PRINT_HEX(irq); 487 /* TODO: ref_clock and tcxo_clock were moved to wl12xx priv */ 488 DRIVER_STATE_PRINT_HEX(hw_pg_ver); 489 DRIVER_STATE_PRINT_HEX(platform_quirks); 490 DRIVER_STATE_PRINT_HEX(chip.id); 491 DRIVER_STATE_PRINT_STR(chip.fw_ver_str); 492 DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str); 493 DRIVER_STATE_PRINT_INT(sched_scanning); 494 495 #undef DRIVER_STATE_PRINT_INT 496 #undef DRIVER_STATE_PRINT_LONG 497 #undef DRIVER_STATE_PRINT_HEX 498 #undef DRIVER_STATE_PRINT_LHEX 499 #undef DRIVER_STATE_PRINT_STR 500 #undef DRIVER_STATE_PRINT 501 #undef DRIVER_STATE_BUF_LEN 502 503 mutex_unlock(&wl->mutex); 504 505 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res); 506 kfree(buf); 507 return ret; 508 } 509 510 static const struct file_operations driver_state_ops = { 511 .read = driver_state_read, 512 .open = simple_open, 513 .llseek = default_llseek, 514 }; 515 516 static ssize_t vifs_state_read(struct file *file, char __user *user_buf, 517 size_t count, loff_t *ppos) 518 { 519 struct wl1271 *wl = file->private_data; 520 struct wl12xx_vif *wlvif; 521 int ret, res = 0; 522 const int buf_size = 4096; 523 char *buf; 524 char tmp_buf[64]; 525 526 buf = kzalloc(buf_size, GFP_KERNEL); 527 if (!buf) 528 return -ENOMEM; 529 530 mutex_lock(&wl->mutex); 531 532 #define VIF_STATE_PRINT(x, fmt) \ 533 (res += scnprintf(buf + res, buf_size - res, \ 534 #x " = " fmt "\n", wlvif->x)) 535 536 #define VIF_STATE_PRINT_LONG(x) VIF_STATE_PRINT(x, "%ld") 537 #define VIF_STATE_PRINT_INT(x) VIF_STATE_PRINT(x, "%d") 538 #define VIF_STATE_PRINT_STR(x) VIF_STATE_PRINT(x, "%s") 539 #define VIF_STATE_PRINT_LHEX(x) VIF_STATE_PRINT(x, "0x%lx") 540 #define VIF_STATE_PRINT_LLHEX(x) VIF_STATE_PRINT(x, "0x%llx") 541 #define VIF_STATE_PRINT_HEX(x) VIF_STATE_PRINT(x, "0x%x") 542 543 #define VIF_STATE_PRINT_NSTR(x, len) \ 544 do { \ 545 memset(tmp_buf, 0, sizeof(tmp_buf)); \ 546 memcpy(tmp_buf, wlvif->x, \ 547 min_t(u8, len, sizeof(tmp_buf) - 1)); \ 548 res += scnprintf(buf + res, buf_size - res, \ 549 #x " = %s\n", tmp_buf); \ 550 } while (0) 551 552 wl12xx_for_each_wlvif(wl, wlvif) { 553 VIF_STATE_PRINT_INT(role_id); 554 VIF_STATE_PRINT_INT(bss_type); 555 VIF_STATE_PRINT_LHEX(flags); 556 VIF_STATE_PRINT_INT(p2p); 557 VIF_STATE_PRINT_INT(dev_role_id); 558 VIF_STATE_PRINT_INT(dev_hlid); 559 560 if (wlvif->bss_type == BSS_TYPE_STA_BSS || 561 wlvif->bss_type == BSS_TYPE_IBSS) { 562 VIF_STATE_PRINT_INT(sta.hlid); 563 VIF_STATE_PRINT_INT(sta.ba_rx_bitmap); 564 VIF_STATE_PRINT_INT(sta.basic_rate_idx); 565 VIF_STATE_PRINT_INT(sta.ap_rate_idx); 566 VIF_STATE_PRINT_INT(sta.p2p_rate_idx); 567 VIF_STATE_PRINT_INT(sta.qos); 568 } else { 569 VIF_STATE_PRINT_INT(ap.global_hlid); 570 VIF_STATE_PRINT_INT(ap.bcast_hlid); 571 VIF_STATE_PRINT_LHEX(ap.sta_hlid_map[0]); 572 VIF_STATE_PRINT_INT(ap.mgmt_rate_idx); 573 VIF_STATE_PRINT_INT(ap.bcast_rate_idx); 574 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[0]); 575 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[1]); 576 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[2]); 577 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[3]); 578 } 579 VIF_STATE_PRINT_INT(last_tx_hlid); 580 VIF_STATE_PRINT_LHEX(links_map[0]); 581 VIF_STATE_PRINT_NSTR(ssid, wlvif->ssid_len); 582 VIF_STATE_PRINT_INT(band); 583 VIF_STATE_PRINT_INT(channel); 584 VIF_STATE_PRINT_HEX(bitrate_masks[0]); 585 VIF_STATE_PRINT_HEX(bitrate_masks[1]); 586 VIF_STATE_PRINT_HEX(basic_rate_set); 587 VIF_STATE_PRINT_HEX(basic_rate); 588 VIF_STATE_PRINT_HEX(rate_set); 589 VIF_STATE_PRINT_INT(beacon_int); 590 VIF_STATE_PRINT_INT(default_key); 591 VIF_STATE_PRINT_INT(aid); 592 VIF_STATE_PRINT_INT(session_counter); 593 VIF_STATE_PRINT_INT(psm_entry_retry); 594 VIF_STATE_PRINT_INT(power_level); 595 VIF_STATE_PRINT_INT(rssi_thold); 596 VIF_STATE_PRINT_INT(last_rssi_event); 597 VIF_STATE_PRINT_INT(ba_support); 598 VIF_STATE_PRINT_INT(ba_allowed); 599 VIF_STATE_PRINT_LLHEX(tx_security_seq); 600 VIF_STATE_PRINT_INT(tx_security_last_seq_lsb); 601 } 602 603 #undef VIF_STATE_PRINT_INT 604 #undef VIF_STATE_PRINT_LONG 605 #undef VIF_STATE_PRINT_HEX 606 #undef VIF_STATE_PRINT_LHEX 607 #undef VIF_STATE_PRINT_LLHEX 608 #undef VIF_STATE_PRINT_STR 609 #undef VIF_STATE_PRINT_NSTR 610 #undef VIF_STATE_PRINT 611 612 mutex_unlock(&wl->mutex); 613 614 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res); 615 kfree(buf); 616 return ret; 617 } 618 619 static const struct file_operations vifs_state_ops = { 620 .read = vifs_state_read, 621 .open = simple_open, 622 .llseek = default_llseek, 623 }; 624 625 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf, 626 size_t count, loff_t *ppos) 627 { 628 struct wl1271 *wl = file->private_data; 629 u8 value; 630 631 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM || 632 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM) 633 value = wl->conf.conn.listen_interval; 634 else 635 value = 0; 636 637 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 638 } 639 640 static ssize_t dtim_interval_write(struct file *file, 641 const char __user *user_buf, 642 size_t count, loff_t *ppos) 643 { 644 struct wl1271 *wl = file->private_data; 645 unsigned long value; 646 int ret; 647 648 ret = kstrtoul_from_user(user_buf, count, 10, &value); 649 if (ret < 0) { 650 wl1271_warning("illegal value for dtim_interval"); 651 return -EINVAL; 652 } 653 654 if (value < 1 || value > 10) { 655 wl1271_warning("dtim value is not in valid range"); 656 return -ERANGE; 657 } 658 659 mutex_lock(&wl->mutex); 660 661 wl->conf.conn.listen_interval = value; 662 /* for some reason there are different event types for 1 and >1 */ 663 if (value == 1) 664 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM; 665 else 666 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM; 667 668 /* 669 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only 670 * take effect on the next time we enter psm. 671 */ 672 mutex_unlock(&wl->mutex); 673 return count; 674 } 675 676 static const struct file_operations dtim_interval_ops = { 677 .read = dtim_interval_read, 678 .write = dtim_interval_write, 679 .open = simple_open, 680 .llseek = default_llseek, 681 }; 682 683 684 685 static ssize_t suspend_dtim_interval_read(struct file *file, 686 char __user *user_buf, 687 size_t count, loff_t *ppos) 688 { 689 struct wl1271 *wl = file->private_data; 690 u8 value; 691 692 if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM || 693 wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM) 694 value = wl->conf.conn.suspend_listen_interval; 695 else 696 value = 0; 697 698 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 699 } 700 701 static ssize_t suspend_dtim_interval_write(struct file *file, 702 const char __user *user_buf, 703 size_t count, loff_t *ppos) 704 { 705 struct wl1271 *wl = file->private_data; 706 unsigned long value; 707 int ret; 708 709 ret = kstrtoul_from_user(user_buf, count, 10, &value); 710 if (ret < 0) { 711 wl1271_warning("illegal value for suspend_dtim_interval"); 712 return -EINVAL; 713 } 714 715 if (value < 1 || value > 10) { 716 wl1271_warning("suspend_dtim value is not in valid range"); 717 return -ERANGE; 718 } 719 720 mutex_lock(&wl->mutex); 721 722 wl->conf.conn.suspend_listen_interval = value; 723 /* for some reason there are different event types for 1 and >1 */ 724 if (value == 1) 725 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM; 726 else 727 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM; 728 729 mutex_unlock(&wl->mutex); 730 return count; 731 } 732 733 734 static const struct file_operations suspend_dtim_interval_ops = { 735 .read = suspend_dtim_interval_read, 736 .write = suspend_dtim_interval_write, 737 .open = simple_open, 738 .llseek = default_llseek, 739 }; 740 741 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf, 742 size_t count, loff_t *ppos) 743 { 744 struct wl1271 *wl = file->private_data; 745 u8 value; 746 747 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON || 748 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS) 749 value = wl->conf.conn.listen_interval; 750 else 751 value = 0; 752 753 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value); 754 } 755 756 static ssize_t beacon_interval_write(struct file *file, 757 const char __user *user_buf, 758 size_t count, loff_t *ppos) 759 { 760 struct wl1271 *wl = file->private_data; 761 unsigned long value; 762 int ret; 763 764 ret = kstrtoul_from_user(user_buf, count, 10, &value); 765 if (ret < 0) { 766 wl1271_warning("illegal value for beacon_interval"); 767 return -EINVAL; 768 } 769 770 if (value < 1 || value > 255) { 771 wl1271_warning("beacon interval value is not in valid range"); 772 return -ERANGE; 773 } 774 775 mutex_lock(&wl->mutex); 776 777 wl->conf.conn.listen_interval = value; 778 /* for some reason there are different event types for 1 and >1 */ 779 if (value == 1) 780 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON; 781 else 782 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS; 783 784 /* 785 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only 786 * take effect on the next time we enter psm. 787 */ 788 mutex_unlock(&wl->mutex); 789 return count; 790 } 791 792 static const struct file_operations beacon_interval_ops = { 793 .read = beacon_interval_read, 794 .write = beacon_interval_write, 795 .open = simple_open, 796 .llseek = default_llseek, 797 }; 798 799 static ssize_t rx_streaming_interval_write(struct file *file, 800 const char __user *user_buf, 801 size_t count, loff_t *ppos) 802 { 803 struct wl1271 *wl = file->private_data; 804 struct wl12xx_vif *wlvif; 805 unsigned long value; 806 int ret; 807 808 ret = kstrtoul_from_user(user_buf, count, 10, &value); 809 if (ret < 0) { 810 wl1271_warning("illegal value in rx_streaming_interval!"); 811 return -EINVAL; 812 } 813 814 /* valid values: 0, 10-100 */ 815 if (value && (value < 10 || value > 100)) { 816 wl1271_warning("value is not in range!"); 817 return -ERANGE; 818 } 819 820 mutex_lock(&wl->mutex); 821 822 wl->conf.rx_streaming.interval = value; 823 824 ret = wl1271_ps_elp_wakeup(wl); 825 if (ret < 0) 826 goto out; 827 828 wl12xx_for_each_wlvif_sta(wl, wlvif) { 829 wl1271_recalc_rx_streaming(wl, wlvif); 830 } 831 832 wl1271_ps_elp_sleep(wl); 833 out: 834 mutex_unlock(&wl->mutex); 835 return count; 836 } 837 838 static ssize_t rx_streaming_interval_read(struct file *file, 839 char __user *userbuf, 840 size_t count, loff_t *ppos) 841 { 842 struct wl1271 *wl = file->private_data; 843 return wl1271_format_buffer(userbuf, count, ppos, 844 "%d\n", wl->conf.rx_streaming.interval); 845 } 846 847 static const struct file_operations rx_streaming_interval_ops = { 848 .read = rx_streaming_interval_read, 849 .write = rx_streaming_interval_write, 850 .open = simple_open, 851 .llseek = default_llseek, 852 }; 853 854 static ssize_t rx_streaming_always_write(struct file *file, 855 const char __user *user_buf, 856 size_t count, loff_t *ppos) 857 { 858 struct wl1271 *wl = file->private_data; 859 struct wl12xx_vif *wlvif; 860 unsigned long value; 861 int ret; 862 863 ret = kstrtoul_from_user(user_buf, count, 10, &value); 864 if (ret < 0) { 865 wl1271_warning("illegal value in rx_streaming_write!"); 866 return -EINVAL; 867 } 868 869 /* valid values: 0, 10-100 */ 870 if (!(value == 0 || value == 1)) { 871 wl1271_warning("value is not in valid!"); 872 return -EINVAL; 873 } 874 875 mutex_lock(&wl->mutex); 876 877 wl->conf.rx_streaming.always = value; 878 879 ret = wl1271_ps_elp_wakeup(wl); 880 if (ret < 0) 881 goto out; 882 883 wl12xx_for_each_wlvif_sta(wl, wlvif) { 884 wl1271_recalc_rx_streaming(wl, wlvif); 885 } 886 887 wl1271_ps_elp_sleep(wl); 888 out: 889 mutex_unlock(&wl->mutex); 890 return count; 891 } 892 893 static ssize_t rx_streaming_always_read(struct file *file, 894 char __user *userbuf, 895 size_t count, loff_t *ppos) 896 { 897 struct wl1271 *wl = file->private_data; 898 return wl1271_format_buffer(userbuf, count, ppos, 899 "%d\n", wl->conf.rx_streaming.always); 900 } 901 902 static const struct file_operations rx_streaming_always_ops = { 903 .read = rx_streaming_always_read, 904 .write = rx_streaming_always_write, 905 .open = simple_open, 906 .llseek = default_llseek, 907 }; 908 909 static ssize_t beacon_filtering_write(struct file *file, 910 const char __user *user_buf, 911 size_t count, loff_t *ppos) 912 { 913 struct wl1271 *wl = file->private_data; 914 struct wl12xx_vif *wlvif; 915 char buf[10]; 916 size_t len; 917 unsigned long value; 918 int ret; 919 920 len = min(count, sizeof(buf) - 1); 921 if (copy_from_user(buf, user_buf, len)) 922 return -EFAULT; 923 buf[len] = '\0'; 924 925 ret = kstrtoul(buf, 0, &value); 926 if (ret < 0) { 927 wl1271_warning("illegal value for beacon_filtering!"); 928 return -EINVAL; 929 } 930 931 mutex_lock(&wl->mutex); 932 933 ret = wl1271_ps_elp_wakeup(wl); 934 if (ret < 0) 935 goto out; 936 937 wl12xx_for_each_wlvif(wl, wlvif) { 938 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value); 939 } 940 941 wl1271_ps_elp_sleep(wl); 942 out: 943 mutex_unlock(&wl->mutex); 944 return count; 945 } 946 947 static const struct file_operations beacon_filtering_ops = { 948 .write = beacon_filtering_write, 949 .open = simple_open, 950 .llseek = default_llseek, 951 }; 952 953 static ssize_t fw_stats_raw_read(struct file *file, 954 char __user *userbuf, 955 size_t count, loff_t *ppos) 956 { 957 struct wl1271 *wl = file->private_data; 958 959 wl1271_debugfs_update_stats(wl); 960 961 return simple_read_from_buffer(userbuf, count, ppos, 962 wl->stats.fw_stats, 963 wl->stats.fw_stats_len); 964 } 965 966 static const struct file_operations fw_stats_raw_ops = { 967 .read = fw_stats_raw_read, 968 .open = simple_open, 969 .llseek = default_llseek, 970 }; 971 972 static ssize_t sleep_auth_read(struct file *file, char __user *user_buf, 973 size_t count, loff_t *ppos) 974 { 975 struct wl1271 *wl = file->private_data; 976 977 return wl1271_format_buffer(user_buf, count, 978 ppos, "%d\n", 979 wl->sleep_auth); 980 } 981 982 static ssize_t sleep_auth_write(struct file *file, 983 const char __user *user_buf, 984 size_t count, loff_t *ppos) 985 { 986 struct wl1271 *wl = file->private_data; 987 unsigned long value; 988 int ret; 989 990 ret = kstrtoul_from_user(user_buf, count, 0, &value); 991 if (ret < 0) { 992 wl1271_warning("illegal value in sleep_auth"); 993 return -EINVAL; 994 } 995 996 if (value < 0 || value > WL1271_PSM_MAX) { 997 wl1271_warning("sleep_auth must be between 0 and %d", 998 WL1271_PSM_MAX); 999 return -ERANGE; 1000 } 1001 1002 mutex_lock(&wl->mutex); 1003 1004 wl->conf.conn.sta_sleep_auth = value; 1005 1006 if (unlikely(wl->state != WLCORE_STATE_ON)) { 1007 /* this will show up on "read" in case we are off */ 1008 wl->sleep_auth = value; 1009 goto out; 1010 } 1011 1012 ret = wl1271_ps_elp_wakeup(wl); 1013 if (ret < 0) 1014 goto out; 1015 1016 ret = wl1271_acx_sleep_auth(wl, value); 1017 if (ret < 0) 1018 goto out_sleep; 1019 1020 out_sleep: 1021 wl1271_ps_elp_sleep(wl); 1022 out: 1023 mutex_unlock(&wl->mutex); 1024 return count; 1025 } 1026 1027 static const struct file_operations sleep_auth_ops = { 1028 .read = sleep_auth_read, 1029 .write = sleep_auth_write, 1030 .open = simple_open, 1031 .llseek = default_llseek, 1032 }; 1033 1034 static ssize_t dev_mem_read(struct file *file, 1035 char __user *user_buf, size_t count, 1036 loff_t *ppos) 1037 { 1038 struct wl1271 *wl = file->private_data; 1039 struct wlcore_partition_set part, old_part; 1040 size_t bytes = count; 1041 int ret; 1042 char *buf; 1043 1044 /* only requests of dword-aligned size and offset are supported */ 1045 if (bytes % 4) 1046 return -EINVAL; 1047 1048 if (*ppos % 4) 1049 return -EINVAL; 1050 1051 /* function should return in reasonable time */ 1052 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE); 1053 1054 if (bytes == 0) 1055 return -EINVAL; 1056 1057 memset(&part, 0, sizeof(part)); 1058 part.mem.start = file->f_pos; 1059 part.mem.size = bytes; 1060 1061 buf = kmalloc(bytes, GFP_KERNEL); 1062 if (!buf) 1063 return -ENOMEM; 1064 1065 mutex_lock(&wl->mutex); 1066 1067 if (unlikely(wl->state == WLCORE_STATE_OFF)) { 1068 ret = -EFAULT; 1069 goto skip_read; 1070 } 1071 1072 /* 1073 * Don't fail if elp_wakeup returns an error, so the device's memory 1074 * could be read even if the FW crashed 1075 */ 1076 wl1271_ps_elp_wakeup(wl); 1077 1078 /* store current partition and switch partition */ 1079 memcpy(&old_part, &wl->curr_part, sizeof(old_part)); 1080 ret = wlcore_set_partition(wl, &part); 1081 if (ret < 0) 1082 goto part_err; 1083 1084 ret = wlcore_raw_read(wl, 0, buf, bytes, false); 1085 if (ret < 0) 1086 goto read_err; 1087 1088 read_err: 1089 /* recover partition */ 1090 ret = wlcore_set_partition(wl, &old_part); 1091 if (ret < 0) 1092 goto part_err; 1093 1094 part_err: 1095 wl1271_ps_elp_sleep(wl); 1096 1097 skip_read: 1098 mutex_unlock(&wl->mutex); 1099 1100 if (ret == 0) { 1101 ret = copy_to_user(user_buf, buf, bytes); 1102 if (ret < bytes) { 1103 bytes -= ret; 1104 *ppos += bytes; 1105 ret = 0; 1106 } else { 1107 ret = -EFAULT; 1108 } 1109 } 1110 1111 kfree(buf); 1112 1113 return ((ret == 0) ? bytes : ret); 1114 } 1115 1116 static ssize_t dev_mem_write(struct file *file, const char __user *user_buf, 1117 size_t count, loff_t *ppos) 1118 { 1119 struct wl1271 *wl = file->private_data; 1120 struct wlcore_partition_set part, old_part; 1121 size_t bytes = count; 1122 int ret; 1123 char *buf; 1124 1125 /* only requests of dword-aligned size and offset are supported */ 1126 if (bytes % 4) 1127 return -EINVAL; 1128 1129 if (*ppos % 4) 1130 return -EINVAL; 1131 1132 /* function should return in reasonable time */ 1133 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE); 1134 1135 if (bytes == 0) 1136 return -EINVAL; 1137 1138 memset(&part, 0, sizeof(part)); 1139 part.mem.start = file->f_pos; 1140 part.mem.size = bytes; 1141 1142 buf = kmalloc(bytes, GFP_KERNEL); 1143 if (!buf) 1144 return -ENOMEM; 1145 1146 ret = copy_from_user(buf, user_buf, bytes); 1147 if (ret) { 1148 ret = -EFAULT; 1149 goto err_out; 1150 } 1151 1152 mutex_lock(&wl->mutex); 1153 1154 if (unlikely(wl->state == WLCORE_STATE_OFF)) { 1155 ret = -EFAULT; 1156 goto skip_write; 1157 } 1158 1159 /* 1160 * Don't fail if elp_wakeup returns an error, so the device's memory 1161 * could be read even if the FW crashed 1162 */ 1163 wl1271_ps_elp_wakeup(wl); 1164 1165 /* store current partition and switch partition */ 1166 memcpy(&old_part, &wl->curr_part, sizeof(old_part)); 1167 ret = wlcore_set_partition(wl, &part); 1168 if (ret < 0) 1169 goto part_err; 1170 1171 ret = wlcore_raw_write(wl, 0, buf, bytes, false); 1172 if (ret < 0) 1173 goto write_err; 1174 1175 write_err: 1176 /* recover partition */ 1177 ret = wlcore_set_partition(wl, &old_part); 1178 if (ret < 0) 1179 goto part_err; 1180 1181 part_err: 1182 wl1271_ps_elp_sleep(wl); 1183 1184 skip_write: 1185 mutex_unlock(&wl->mutex); 1186 1187 if (ret == 0) 1188 *ppos += bytes; 1189 1190 err_out: 1191 kfree(buf); 1192 1193 return ((ret == 0) ? bytes : ret); 1194 } 1195 1196 static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig) 1197 { 1198 loff_t ret; 1199 1200 /* only requests of dword-aligned size and offset are supported */ 1201 if (offset % 4) 1202 return -EINVAL; 1203 1204 switch (orig) { 1205 case SEEK_SET: 1206 file->f_pos = offset; 1207 ret = file->f_pos; 1208 break; 1209 case SEEK_CUR: 1210 file->f_pos += offset; 1211 ret = file->f_pos; 1212 break; 1213 default: 1214 ret = -EINVAL; 1215 } 1216 1217 return ret; 1218 } 1219 1220 static const struct file_operations dev_mem_ops = { 1221 .open = simple_open, 1222 .read = dev_mem_read, 1223 .write = dev_mem_write, 1224 .llseek = dev_mem_seek, 1225 }; 1226 1227 static int wl1271_debugfs_add_files(struct wl1271 *wl, 1228 struct dentry *rootdir) 1229 { 1230 int ret = 0; 1231 struct dentry *entry, *streaming; 1232 1233 DEBUGFS_ADD(tx_queue_len, rootdir); 1234 DEBUGFS_ADD(retry_count, rootdir); 1235 DEBUGFS_ADD(excessive_retries, rootdir); 1236 1237 DEBUGFS_ADD(gpio_power, rootdir); 1238 DEBUGFS_ADD(start_recovery, rootdir); 1239 DEBUGFS_ADD(driver_state, rootdir); 1240 DEBUGFS_ADD(vifs_state, rootdir); 1241 DEBUGFS_ADD(dtim_interval, rootdir); 1242 DEBUGFS_ADD(suspend_dtim_interval, rootdir); 1243 DEBUGFS_ADD(beacon_interval, rootdir); 1244 DEBUGFS_ADD(beacon_filtering, rootdir); 1245 DEBUGFS_ADD(dynamic_ps_timeout, rootdir); 1246 DEBUGFS_ADD(forced_ps, rootdir); 1247 DEBUGFS_ADD(split_scan_timeout, rootdir); 1248 DEBUGFS_ADD(irq_pkt_threshold, rootdir); 1249 DEBUGFS_ADD(irq_blk_threshold, rootdir); 1250 DEBUGFS_ADD(irq_timeout, rootdir); 1251 DEBUGFS_ADD(fw_stats_raw, rootdir); 1252 DEBUGFS_ADD(sleep_auth, rootdir); 1253 1254 streaming = debugfs_create_dir("rx_streaming", rootdir); 1255 if (!streaming || IS_ERR(streaming)) 1256 goto err; 1257 1258 DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming); 1259 DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming); 1260 1261 DEBUGFS_ADD_PREFIX(dev, mem, rootdir); 1262 1263 return 0; 1264 1265 err: 1266 if (IS_ERR(entry)) 1267 ret = PTR_ERR(entry); 1268 else 1269 ret = -ENOMEM; 1270 1271 return ret; 1272 } 1273 1274 void wl1271_debugfs_reset(struct wl1271 *wl) 1275 { 1276 if (!wl->stats.fw_stats) 1277 return; 1278 1279 memset(wl->stats.fw_stats, 0, wl->stats.fw_stats_len); 1280 wl->stats.retry_count = 0; 1281 wl->stats.excessive_retries = 0; 1282 } 1283 1284 int wl1271_debugfs_init(struct wl1271 *wl) 1285 { 1286 int ret; 1287 struct dentry *rootdir; 1288 1289 rootdir = debugfs_create_dir(KBUILD_MODNAME, 1290 wl->hw->wiphy->debugfsdir); 1291 1292 if (IS_ERR(rootdir)) { 1293 ret = PTR_ERR(rootdir); 1294 goto out; 1295 } 1296 1297 wl->stats.fw_stats = kzalloc(wl->stats.fw_stats_len, GFP_KERNEL); 1298 if (!wl->stats.fw_stats) { 1299 ret = -ENOMEM; 1300 goto out_remove; 1301 } 1302 1303 wl->stats.fw_stats_update = jiffies; 1304 1305 ret = wl1271_debugfs_add_files(wl, rootdir); 1306 if (ret < 0) 1307 goto out_exit; 1308 1309 ret = wlcore_debugfs_init(wl, rootdir); 1310 if (ret < 0) 1311 goto out_exit; 1312 1313 goto out; 1314 1315 out_exit: 1316 wl1271_debugfs_exit(wl); 1317 1318 out_remove: 1319 debugfs_remove_recursive(rootdir); 1320 1321 out: 1322 return ret; 1323 } 1324 1325 void wl1271_debugfs_exit(struct wl1271 *wl) 1326 { 1327 kfree(wl->stats.fw_stats); 1328 wl->stats.fw_stats = NULL; 1329 } 1330