1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: debugfs 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include <linux/debugfs.h> 9 10 #include "main.h" 11 #include "11n.h" 12 13 14 static struct dentry *mwifiex_dfs_dir; 15 16 static char *bss_modes[] = { 17 "UNSPECIFIED", 18 "ADHOC", 19 "STATION", 20 "AP", 21 "AP_VLAN", 22 "WDS", 23 "MONITOR", 24 "MESH_POINT", 25 "P2P_CLIENT", 26 "P2P_GO", 27 "P2P_DEVICE", 28 }; 29 30 /* 31 * Proc info file read handler. 32 * 33 * This function is called when the 'info' file is opened for reading. 34 * It prints the following driver related information - 35 * - Driver name 36 * - Driver version 37 * - Driver extended version 38 * - Interface name 39 * - BSS mode 40 * - Media state (connected or disconnected) 41 * - MAC address 42 * - Total number of Tx bytes 43 * - Total number of Rx bytes 44 * - Total number of Tx packets 45 * - Total number of Rx packets 46 * - Total number of dropped Tx packets 47 * - Total number of dropped Rx packets 48 * - Total number of corrupted Tx packets 49 * - Total number of corrupted Rx packets 50 * - Carrier status (on or off) 51 * - Tx queue status (started or stopped) 52 * 53 * For STA mode drivers, it also prints the following extra - 54 * - ESSID 55 * - BSSID 56 * - Channel 57 * - Region code 58 * - Multicast count 59 * - Multicast addresses 60 */ 61 static ssize_t 62 mwifiex_info_read(struct file *file, char __user *ubuf, 63 size_t count, loff_t *ppos) 64 { 65 struct mwifiex_private *priv = 66 (struct mwifiex_private *) file->private_data; 67 struct net_device *netdev = priv->netdev; 68 struct netdev_hw_addr *ha; 69 struct netdev_queue *txq; 70 unsigned long page = get_zeroed_page(GFP_KERNEL); 71 char *p = (char *) page, fmt[64]; 72 struct mwifiex_bss_info info; 73 ssize_t ret; 74 int i = 0; 75 76 if (!p) 77 return -ENOMEM; 78 79 memset(&info, 0, sizeof(info)); 80 ret = mwifiex_get_bss_info(priv, &info); 81 if (ret) 82 goto free_and_exit; 83 84 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1); 85 86 mwifiex_get_ver_ext(priv, 0); 87 88 p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); 89 p += sprintf(p, "driver_version = %s", fmt); 90 p += sprintf(p, "\nverext = %s", priv->version_str); 91 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name); 92 93 if (info.bss_mode >= ARRAY_SIZE(bss_modes)) 94 p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode); 95 else 96 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]); 97 98 p += sprintf(p, "media_state=\"%s\"\n", 99 (!priv->media_connected ? "Disconnected" : "Connected")); 100 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr); 101 102 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { 103 p += sprintf(p, "multicast_count=\"%d\"\n", 104 netdev_mc_count(netdev)); 105 p += sprintf(p, "essid=\"%.*s\"\n", info.ssid.ssid_len, 106 info.ssid.ssid); 107 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid); 108 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan); 109 p += sprintf(p, "country_code = \"%s\"\n", info.country_code); 110 p += sprintf(p, "region_code=\"0x%x\"\n", 111 priv->adapter->region_code); 112 113 netdev_for_each_mc_addr(ha, netdev) 114 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n", 115 i++, ha->addr); 116 } 117 118 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes); 119 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes); 120 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets); 121 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets); 122 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped); 123 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped); 124 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors); 125 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors); 126 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev)) 127 ? "on" : "off")); 128 p += sprintf(p, "tx queue"); 129 for (i = 0; i < netdev->num_tx_queues; i++) { 130 txq = netdev_get_tx_queue(netdev, i); 131 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ? 132 "stopped" : "started"); 133 } 134 p += sprintf(p, "\n"); 135 136 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page, 137 (unsigned long) p - page); 138 139 free_and_exit: 140 free_page(page); 141 return ret; 142 } 143 144 /* 145 * Proc getlog file read handler. 146 * 147 * This function is called when the 'getlog' file is opened for reading 148 * It prints the following log information - 149 * - Number of multicast Tx frames 150 * - Number of failed packets 151 * - Number of Tx retries 152 * - Number of multicast Tx retries 153 * - Number of duplicate frames 154 * - Number of RTS successes 155 * - Number of RTS failures 156 * - Number of ACK failures 157 * - Number of fragmented Rx frames 158 * - Number of multicast Rx frames 159 * - Number of FCS errors 160 * - Number of Tx frames 161 * - WEP ICV error counts 162 * - Number of received beacons 163 * - Number of missed beacons 164 */ 165 static ssize_t 166 mwifiex_getlog_read(struct file *file, char __user *ubuf, 167 size_t count, loff_t *ppos) 168 { 169 struct mwifiex_private *priv = 170 (struct mwifiex_private *) file->private_data; 171 unsigned long page = get_zeroed_page(GFP_KERNEL); 172 char *p = (char *) page; 173 ssize_t ret; 174 struct mwifiex_ds_get_stats stats; 175 176 if (!p) 177 return -ENOMEM; 178 179 memset(&stats, 0, sizeof(stats)); 180 ret = mwifiex_get_stats_info(priv, &stats); 181 if (ret) 182 goto free_and_exit; 183 184 p += sprintf(p, "\n" 185 "mcasttxframe %u\n" 186 "failed %u\n" 187 "retry %u\n" 188 "multiretry %u\n" 189 "framedup %u\n" 190 "rtssuccess %u\n" 191 "rtsfailure %u\n" 192 "ackfailure %u\n" 193 "rxfrag %u\n" 194 "mcastrxframe %u\n" 195 "fcserror %u\n" 196 "txframe %u\n" 197 "wepicverrcnt-1 %u\n" 198 "wepicverrcnt-2 %u\n" 199 "wepicverrcnt-3 %u\n" 200 "wepicverrcnt-4 %u\n" 201 "bcn_rcv_cnt %u\n" 202 "bcn_miss_cnt %u\n", 203 stats.mcast_tx_frame, 204 stats.failed, 205 stats.retry, 206 stats.multi_retry, 207 stats.frame_dup, 208 stats.rts_success, 209 stats.rts_failure, 210 stats.ack_failure, 211 stats.rx_frag, 212 stats.mcast_rx_frame, 213 stats.fcs_error, 214 stats.tx_frame, 215 stats.wep_icv_error[0], 216 stats.wep_icv_error[1], 217 stats.wep_icv_error[2], 218 stats.wep_icv_error[3], 219 stats.bcn_rcv_cnt, 220 stats.bcn_miss_cnt); 221 222 223 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page, 224 (unsigned long) p - page); 225 226 free_and_exit: 227 free_page(page); 228 return ret; 229 } 230 231 /* Sysfs histogram file read handler. 232 * 233 * This function is called when the 'histogram' file is opened for reading 234 * It prints the following histogram information - 235 * - Number of histogram samples 236 * - Receive packet number of each rx_rate 237 * - Receive packet number of each snr 238 * - Receive packet number of each nosie_flr 239 * - Receive packet number of each signal streath 240 */ 241 static ssize_t 242 mwifiex_histogram_read(struct file *file, char __user *ubuf, 243 size_t count, loff_t *ppos) 244 { 245 struct mwifiex_private *priv = 246 (struct mwifiex_private *)file->private_data; 247 ssize_t ret; 248 struct mwifiex_histogram_data *phist_data; 249 int i, value; 250 unsigned long page = get_zeroed_page(GFP_KERNEL); 251 char *p = (char *)page; 252 253 if (!p) 254 return -ENOMEM; 255 256 if (!priv || !priv->hist_data) { 257 ret = -EFAULT; 258 goto free_and_exit; 259 } 260 261 phist_data = priv->hist_data; 262 263 p += sprintf(p, "\n" 264 "total samples = %d\n", 265 atomic_read(&phist_data->num_samples)); 266 267 p += sprintf(p, 268 "rx rates (in Mbps): 0=1M 1=2M 2=5.5M 3=11M 4=6M 5=9M 6=12M\n" 269 "7=18M 8=24M 9=36M 10=48M 11=54M 12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n"); 270 271 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) { 272 p += sprintf(p, 273 "44-53=MCS0-9(VHT:BW20) 54-63=MCS0-9(VHT:BW40) 64-73=MCS0-9(VHT:BW80)\n\n"); 274 } else { 275 p += sprintf(p, "\n"); 276 } 277 278 for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) { 279 value = atomic_read(&phist_data->rx_rate[i]); 280 if (value) 281 p += sprintf(p, "rx_rate[%02d] = %d\n", i, value); 282 } 283 284 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) { 285 for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES; 286 i++) { 287 value = atomic_read(&phist_data->rx_rate[i]); 288 if (value) 289 p += sprintf(p, "rx_rate[%02d] = %d\n", 290 i, value); 291 } 292 } 293 294 for (i = 0; i < MWIFIEX_MAX_SNR; i++) { 295 value = atomic_read(&phist_data->snr[i]); 296 if (value) 297 p += sprintf(p, "snr[%02ddB] = %d\n", i, value); 298 } 299 for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) { 300 value = atomic_read(&phist_data->noise_flr[i]); 301 if (value) 302 p += sprintf(p, "noise_flr[%02ddBm] = %d\n", 303 (int)(i-128), value); 304 } 305 for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) { 306 value = atomic_read(&phist_data->sig_str[i]); 307 if (value) 308 p += sprintf(p, "sig_strength[-%02ddBm] = %d\n", 309 i, value); 310 } 311 312 ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page, 313 (unsigned long)p - page); 314 315 free_and_exit: 316 free_page(page); 317 return ret; 318 } 319 320 static ssize_t 321 mwifiex_histogram_write(struct file *file, const char __user *ubuf, 322 size_t count, loff_t *ppos) 323 { 324 struct mwifiex_private *priv = (void *)file->private_data; 325 326 if (priv && priv->hist_data) 327 mwifiex_hist_data_reset(priv); 328 return 0; 329 } 330 331 static struct mwifiex_debug_info info; 332 333 /* 334 * Proc debug file read handler. 335 * 336 * This function is called when the 'debug' file is opened for reading 337 * It prints the following log information - 338 * - Interrupt count 339 * - WMM AC VO packets count 340 * - WMM AC VI packets count 341 * - WMM AC BE packets count 342 * - WMM AC BK packets count 343 * - Maximum Tx buffer size 344 * - Tx buffer size 345 * - Current Tx buffer size 346 * - Power Save mode 347 * - Power Save state 348 * - Deep Sleep status 349 * - Device wakeup required status 350 * - Number of wakeup tries 351 * - Host Sleep configured status 352 * - Host Sleep activated status 353 * - Number of Tx timeouts 354 * - Number of command timeouts 355 * - Last timed out command ID 356 * - Last timed out command action 357 * - Last command ID 358 * - Last command action 359 * - Last command index 360 * - Last command response ID 361 * - Last command response index 362 * - Last event 363 * - Last event index 364 * - Number of host to card command failures 365 * - Number of sleep confirm command failures 366 * - Number of host to card data failure 367 * - Number of deauthentication events 368 * - Number of disassociation events 369 * - Number of link lost events 370 * - Number of deauthentication commands 371 * - Number of association success commands 372 * - Number of association failure commands 373 * - Number of commands sent 374 * - Number of data packets sent 375 * - Number of command responses received 376 * - Number of events received 377 * - Tx BA stream table (TID, RA) 378 * - Rx reorder table (TID, TA, Start window, Window size, Buffer) 379 */ 380 static ssize_t 381 mwifiex_debug_read(struct file *file, char __user *ubuf, 382 size_t count, loff_t *ppos) 383 { 384 struct mwifiex_private *priv = 385 (struct mwifiex_private *) file->private_data; 386 unsigned long page = get_zeroed_page(GFP_KERNEL); 387 char *p = (char *) page; 388 ssize_t ret; 389 390 if (!p) 391 return -ENOMEM; 392 393 ret = mwifiex_get_debug_info(priv, &info); 394 if (ret) 395 goto free_and_exit; 396 397 p += mwifiex_debug_info_to_buffer(priv, p, &info); 398 399 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page, 400 (unsigned long) p - page); 401 402 free_and_exit: 403 free_page(page); 404 return ret; 405 } 406 407 static u32 saved_reg_type, saved_reg_offset, saved_reg_value; 408 409 /* 410 * Proc regrdwr file write handler. 411 * 412 * This function is called when the 'regrdwr' file is opened for writing 413 * 414 * This function can be used to write to a register. 415 */ 416 static ssize_t 417 mwifiex_regrdwr_write(struct file *file, 418 const char __user *ubuf, size_t count, loff_t *ppos) 419 { 420 char *buf; 421 int ret; 422 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX; 423 424 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1))); 425 if (IS_ERR(buf)) 426 return PTR_ERR(buf); 427 428 if (sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value) != 3) { 429 ret = -EINVAL; 430 goto done; 431 } 432 433 if (reg_type == 0 || reg_offset == 0) { 434 ret = -EINVAL; 435 goto done; 436 } else { 437 saved_reg_type = reg_type; 438 saved_reg_offset = reg_offset; 439 saved_reg_value = reg_value; 440 ret = count; 441 } 442 done: 443 kfree(buf); 444 return ret; 445 } 446 447 /* 448 * Proc regrdwr file read handler. 449 * 450 * This function is called when the 'regrdwr' file is opened for reading 451 * 452 * This function can be used to read from a register. 453 */ 454 static ssize_t 455 mwifiex_regrdwr_read(struct file *file, char __user *ubuf, 456 size_t count, loff_t *ppos) 457 { 458 struct mwifiex_private *priv = 459 (struct mwifiex_private *) file->private_data; 460 unsigned long addr = get_zeroed_page(GFP_KERNEL); 461 char *buf = (char *) addr; 462 int pos = 0, ret = 0; 463 u32 reg_value; 464 465 if (!buf) 466 return -ENOMEM; 467 468 if (!saved_reg_type) { 469 /* No command has been given */ 470 pos += snprintf(buf, PAGE_SIZE, "0"); 471 goto done; 472 } 473 /* Set command has been given */ 474 if (saved_reg_value != UINT_MAX) { 475 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset, 476 saved_reg_value); 477 478 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", 479 saved_reg_type, saved_reg_offset, 480 saved_reg_value); 481 482 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 483 484 goto done; 485 } 486 /* Get command has been given */ 487 ret = mwifiex_reg_read(priv, saved_reg_type, 488 saved_reg_offset, ®_value); 489 if (ret) { 490 ret = -EINVAL; 491 goto done; 492 } 493 494 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type, 495 saved_reg_offset, reg_value); 496 497 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 498 499 done: 500 free_page(addr); 501 return ret; 502 } 503 504 /* Proc debug_mask file read handler. 505 * This function is called when the 'debug_mask' file is opened for reading 506 * This function can be used read driver debugging mask value. 507 */ 508 static ssize_t 509 mwifiex_debug_mask_read(struct file *file, char __user *ubuf, 510 size_t count, loff_t *ppos) 511 { 512 struct mwifiex_private *priv = 513 (struct mwifiex_private *)file->private_data; 514 unsigned long page = get_zeroed_page(GFP_KERNEL); 515 char *buf = (char *)page; 516 size_t ret = 0; 517 int pos = 0; 518 519 if (!buf) 520 return -ENOMEM; 521 522 pos += snprintf(buf, PAGE_SIZE, "debug mask=0x%08x\n", 523 priv->adapter->debug_mask); 524 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 525 526 free_page(page); 527 return ret; 528 } 529 530 /* Proc debug_mask file read handler. 531 * This function is called when the 'debug_mask' file is opened for reading 532 * This function can be used read driver debugging mask value. 533 */ 534 static ssize_t 535 mwifiex_debug_mask_write(struct file *file, const char __user *ubuf, 536 size_t count, loff_t *ppos) 537 { 538 int ret; 539 unsigned long debug_mask; 540 struct mwifiex_private *priv = (void *)file->private_data; 541 char *buf; 542 543 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1))); 544 if (IS_ERR(buf)) 545 return PTR_ERR(buf); 546 547 if (kstrtoul(buf, 0, &debug_mask)) { 548 ret = -EINVAL; 549 goto done; 550 } 551 552 priv->adapter->debug_mask = debug_mask; 553 ret = count; 554 done: 555 kfree(buf); 556 return ret; 557 } 558 559 /* debugfs verext file write handler. 560 * This function is called when the 'verext' file is opened for write 561 */ 562 static ssize_t 563 mwifiex_verext_write(struct file *file, const char __user *ubuf, 564 size_t count, loff_t *ppos) 565 { 566 int ret; 567 u32 versionstrsel; 568 struct mwifiex_private *priv = (void *)file->private_data; 569 char buf[16]; 570 571 memset(buf, 0, sizeof(buf)); 572 573 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) 574 return -EFAULT; 575 576 ret = kstrtou32(buf, 10, &versionstrsel); 577 if (ret) 578 return ret; 579 580 priv->versionstrsel = versionstrsel; 581 582 return count; 583 } 584 585 /* Proc verext file read handler. 586 * This function is called when the 'verext' file is opened for reading 587 * This function can be used read driver exteneed verion string. 588 */ 589 static ssize_t 590 mwifiex_verext_read(struct file *file, char __user *ubuf, 591 size_t count, loff_t *ppos) 592 { 593 struct mwifiex_private *priv = 594 (struct mwifiex_private *)file->private_data; 595 char buf[256]; 596 int ret; 597 598 mwifiex_get_ver_ext(priv, priv->versionstrsel); 599 ret = snprintf(buf, sizeof(buf), "version string: %s\n", 600 priv->version_str); 601 602 return simple_read_from_buffer(ubuf, count, ppos, buf, ret); 603 } 604 605 /* Proc memrw file write handler. 606 * This function is called when the 'memrw' file is opened for writing 607 * This function can be used to write to a memory location. 608 */ 609 static ssize_t 610 mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count, 611 loff_t *ppos) 612 { 613 int ret; 614 char cmd; 615 struct mwifiex_ds_mem_rw mem_rw; 616 u16 cmd_action; 617 struct mwifiex_private *priv = (void *)file->private_data; 618 char *buf; 619 620 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1))); 621 if (IS_ERR(buf)) 622 return PTR_ERR(buf); 623 624 ret = sscanf(buf, "%c %x %x", &cmd, &mem_rw.addr, &mem_rw.value); 625 if (ret != 3) { 626 ret = -EINVAL; 627 goto done; 628 } 629 630 if ((cmd == 'r') || (cmd == 'R')) { 631 cmd_action = HostCmd_ACT_GEN_GET; 632 mem_rw.value = 0; 633 } else if ((cmd == 'w') || (cmd == 'W')) { 634 cmd_action = HostCmd_ACT_GEN_SET; 635 } else { 636 ret = -EINVAL; 637 goto done; 638 } 639 640 memcpy(&priv->mem_rw, &mem_rw, sizeof(mem_rw)); 641 if (mwifiex_send_cmd(priv, HostCmd_CMD_MEM_ACCESS, cmd_action, 0, 642 &mem_rw, true)) 643 ret = -1; 644 else 645 ret = count; 646 647 done: 648 kfree(buf); 649 return ret; 650 } 651 652 /* Proc memrw file read handler. 653 * This function is called when the 'memrw' file is opened for reading 654 * This function can be used to read from a memory location. 655 */ 656 static ssize_t 657 mwifiex_memrw_read(struct file *file, char __user *ubuf, 658 size_t count, loff_t *ppos) 659 { 660 struct mwifiex_private *priv = (void *)file->private_data; 661 unsigned long addr = get_zeroed_page(GFP_KERNEL); 662 char *buf = (char *)addr; 663 int ret, pos = 0; 664 665 if (!buf) 666 return -ENOMEM; 667 668 pos += snprintf(buf, PAGE_SIZE, "0x%x 0x%x\n", priv->mem_rw.addr, 669 priv->mem_rw.value); 670 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 671 672 free_page(addr); 673 return ret; 674 } 675 676 static u32 saved_offset = -1, saved_bytes = -1; 677 678 /* 679 * Proc rdeeprom file write handler. 680 * 681 * This function is called when the 'rdeeprom' file is opened for writing 682 * 683 * This function can be used to write to a RDEEPROM location. 684 */ 685 static ssize_t 686 mwifiex_rdeeprom_write(struct file *file, 687 const char __user *ubuf, size_t count, loff_t *ppos) 688 { 689 char *buf; 690 int ret = 0; 691 int offset = -1, bytes = -1; 692 693 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1))); 694 if (IS_ERR(buf)) 695 return PTR_ERR(buf); 696 697 if (sscanf(buf, "%d %d", &offset, &bytes) != 2) { 698 ret = -EINVAL; 699 goto done; 700 } 701 702 if (offset == -1 || bytes == -1) { 703 ret = -EINVAL; 704 goto done; 705 } else { 706 saved_offset = offset; 707 saved_bytes = bytes; 708 ret = count; 709 } 710 done: 711 kfree(buf); 712 return ret; 713 } 714 715 /* 716 * Proc rdeeprom read write handler. 717 * 718 * This function is called when the 'rdeeprom' file is opened for reading 719 * 720 * This function can be used to read from a RDEEPROM location. 721 */ 722 static ssize_t 723 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf, 724 size_t count, loff_t *ppos) 725 { 726 struct mwifiex_private *priv = 727 (struct mwifiex_private *) file->private_data; 728 unsigned long addr = get_zeroed_page(GFP_KERNEL); 729 char *buf = (char *) addr; 730 int pos, ret, i; 731 u8 value[MAX_EEPROM_DATA]; 732 733 if (!buf) 734 return -ENOMEM; 735 736 if (saved_offset == -1) { 737 /* No command has been given */ 738 pos = snprintf(buf, PAGE_SIZE, "0"); 739 goto done; 740 } 741 742 /* Get command has been given */ 743 ret = mwifiex_eeprom_read(priv, (u16) saved_offset, 744 (u16) saved_bytes, value); 745 if (ret) { 746 ret = -EINVAL; 747 goto out_free; 748 } 749 750 pos = snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes); 751 752 for (i = 0; i < saved_bytes; i++) 753 pos += scnprintf(buf + pos, PAGE_SIZE - pos, "%d ", value[i]); 754 755 done: 756 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 757 out_free: 758 free_page(addr); 759 return ret; 760 } 761 762 /* Proc hscfg file write handler 763 * This function can be used to configure the host sleep parameters. 764 */ 765 static ssize_t 766 mwifiex_hscfg_write(struct file *file, const char __user *ubuf, 767 size_t count, loff_t *ppos) 768 { 769 struct mwifiex_private *priv = (void *)file->private_data; 770 char *buf; 771 int ret, arg_num; 772 struct mwifiex_ds_hs_cfg hscfg; 773 int conditions = HS_CFG_COND_DEF; 774 u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF; 775 776 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1))); 777 if (IS_ERR(buf)) 778 return PTR_ERR(buf); 779 780 arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap); 781 782 memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg)); 783 784 if (arg_num > 3) { 785 mwifiex_dbg(priv->adapter, ERROR, 786 "Too many arguments\n"); 787 ret = -EINVAL; 788 goto done; 789 } 790 791 if (arg_num >= 1 && arg_num < 3) 792 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET, 793 MWIFIEX_SYNC_CMD, &hscfg); 794 795 if (arg_num) { 796 if (conditions == HS_CFG_CANCEL) { 797 mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD); 798 ret = count; 799 goto done; 800 } 801 hscfg.conditions = conditions; 802 } 803 if (arg_num >= 2) 804 hscfg.gpio = gpio; 805 if (arg_num == 3) 806 hscfg.gap = gap; 807 808 hscfg.is_invoke_hostcmd = false; 809 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET, 810 MWIFIEX_SYNC_CMD, &hscfg); 811 812 mwifiex_enable_hs(priv->adapter); 813 clear_bit(MWIFIEX_IS_HS_ENABLING, &priv->adapter->work_flags); 814 ret = count; 815 done: 816 kfree(buf); 817 return ret; 818 } 819 820 /* Proc hscfg file read handler 821 * This function can be used to read host sleep configuration 822 * parameters from driver. 823 */ 824 static ssize_t 825 mwifiex_hscfg_read(struct file *file, char __user *ubuf, 826 size_t count, loff_t *ppos) 827 { 828 struct mwifiex_private *priv = (void *)file->private_data; 829 unsigned long addr = get_zeroed_page(GFP_KERNEL); 830 char *buf = (char *)addr; 831 int pos, ret; 832 struct mwifiex_ds_hs_cfg hscfg; 833 834 if (!buf) 835 return -ENOMEM; 836 837 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET, 838 MWIFIEX_SYNC_CMD, &hscfg); 839 840 pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions, 841 hscfg.gpio, hscfg.gap); 842 843 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); 844 845 free_page(addr); 846 return ret; 847 } 848 849 static ssize_t 850 mwifiex_timeshare_coex_read(struct file *file, char __user *ubuf, 851 size_t count, loff_t *ppos) 852 { 853 struct mwifiex_private *priv = file->private_data; 854 char buf[3]; 855 bool timeshare_coex; 856 int ret; 857 unsigned int len; 858 859 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15) 860 return -EOPNOTSUPP; 861 862 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX, 863 HostCmd_ACT_GEN_GET, 0, ×hare_coex, true); 864 if (ret) 865 return ret; 866 867 len = sprintf(buf, "%d\n", timeshare_coex); 868 return simple_read_from_buffer(ubuf, count, ppos, buf, len); 869 } 870 871 static ssize_t 872 mwifiex_timeshare_coex_write(struct file *file, const char __user *ubuf, 873 size_t count, loff_t *ppos) 874 { 875 bool timeshare_coex; 876 struct mwifiex_private *priv = file->private_data; 877 char kbuf[16]; 878 int ret; 879 880 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15) 881 return -EOPNOTSUPP; 882 883 memset(kbuf, 0, sizeof(kbuf)); 884 885 if (copy_from_user(&kbuf, ubuf, min_t(size_t, sizeof(kbuf) - 1, count))) 886 return -EFAULT; 887 888 if (kstrtobool(kbuf, ×hare_coex)) 889 return -EINVAL; 890 891 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX, 892 HostCmd_ACT_GEN_SET, 0, ×hare_coex, true); 893 if (ret) 894 return ret; 895 else 896 return count; 897 } 898 899 static ssize_t 900 mwifiex_reset_write(struct file *file, 901 const char __user *ubuf, size_t count, loff_t *ppos) 902 { 903 struct mwifiex_private *priv = file->private_data; 904 struct mwifiex_adapter *adapter = priv->adapter; 905 bool result; 906 int rc; 907 908 rc = kstrtobool_from_user(ubuf, count, &result); 909 if (rc) 910 return rc; 911 912 if (!result) 913 return -EINVAL; 914 915 if (adapter->if_ops.card_reset) { 916 dev_info(adapter->dev, "Resetting per request\n"); 917 adapter->if_ops.card_reset(adapter); 918 } 919 920 return count; 921 } 922 923 #define MWIFIEX_DFS_ADD_FILE(name) do { \ 924 debugfs_create_file(#name, 0644, priv->dfs_dev_dir, priv, \ 925 &mwifiex_dfs_##name##_fops); \ 926 } while (0); 927 928 #define MWIFIEX_DFS_FILE_OPS(name) \ 929 static const struct file_operations mwifiex_dfs_##name##_fops = { \ 930 .read = mwifiex_##name##_read, \ 931 .write = mwifiex_##name##_write, \ 932 .open = simple_open, \ 933 }; 934 935 #define MWIFIEX_DFS_FILE_READ_OPS(name) \ 936 static const struct file_operations mwifiex_dfs_##name##_fops = { \ 937 .read = mwifiex_##name##_read, \ 938 .open = simple_open, \ 939 }; 940 941 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \ 942 static const struct file_operations mwifiex_dfs_##name##_fops = { \ 943 .write = mwifiex_##name##_write, \ 944 .open = simple_open, \ 945 }; 946 947 948 MWIFIEX_DFS_FILE_READ_OPS(info); 949 MWIFIEX_DFS_FILE_READ_OPS(debug); 950 MWIFIEX_DFS_FILE_READ_OPS(getlog); 951 MWIFIEX_DFS_FILE_OPS(regrdwr); 952 MWIFIEX_DFS_FILE_OPS(rdeeprom); 953 MWIFIEX_DFS_FILE_OPS(memrw); 954 MWIFIEX_DFS_FILE_OPS(hscfg); 955 MWIFIEX_DFS_FILE_OPS(histogram); 956 MWIFIEX_DFS_FILE_OPS(debug_mask); 957 MWIFIEX_DFS_FILE_OPS(timeshare_coex); 958 MWIFIEX_DFS_FILE_WRITE_OPS(reset); 959 MWIFIEX_DFS_FILE_OPS(verext); 960 961 /* 962 * This function creates the debug FS directory structure and the files. 963 */ 964 void 965 mwifiex_dev_debugfs_init(struct mwifiex_private *priv) 966 { 967 if (!mwifiex_dfs_dir || !priv) 968 return; 969 970 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name, 971 mwifiex_dfs_dir); 972 973 if (!priv->dfs_dev_dir) 974 return; 975 976 MWIFIEX_DFS_ADD_FILE(info); 977 MWIFIEX_DFS_ADD_FILE(debug); 978 MWIFIEX_DFS_ADD_FILE(getlog); 979 MWIFIEX_DFS_ADD_FILE(regrdwr); 980 MWIFIEX_DFS_ADD_FILE(rdeeprom); 981 982 MWIFIEX_DFS_ADD_FILE(memrw); 983 MWIFIEX_DFS_ADD_FILE(hscfg); 984 MWIFIEX_DFS_ADD_FILE(histogram); 985 MWIFIEX_DFS_ADD_FILE(debug_mask); 986 MWIFIEX_DFS_ADD_FILE(timeshare_coex); 987 MWIFIEX_DFS_ADD_FILE(reset); 988 MWIFIEX_DFS_ADD_FILE(verext); 989 } 990 991 /* 992 * This function removes the debug FS directory structure and the files. 993 */ 994 void 995 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv) 996 { 997 if (!priv) 998 return; 999 1000 debugfs_remove_recursive(priv->dfs_dev_dir); 1001 } 1002 1003 /* 1004 * This function creates the top level proc directory. 1005 */ 1006 void 1007 mwifiex_debugfs_init(void) 1008 { 1009 if (!mwifiex_dfs_dir) 1010 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL); 1011 } 1012 1013 /* 1014 * This function removes the top level proc directory. 1015 */ 1016 void 1017 mwifiex_debugfs_remove(void) 1018 { 1019 debugfs_remove(mwifiex_dfs_dir); 1020 } 1021