1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved. */ 3 4 #include <linux/err.h> 5 #include <linux/seq_file.h> 6 #include <linux/debugfs.h> 7 #include "main.h" 8 #include "bus.h" 9 #include "debug.h" 10 #include "pci.h" 11 12 #define MMIO_REG_ACCESS_MEM_TYPE 0xFF 13 #define MMIO_REG_RAW_ACCESS_MEM_TYPE 0xFE 14 15 #if IS_ENABLED(CONFIG_IPC_LOGGING) 16 void *cnss_ipc_log_context; 17 void *cnss_ipc_log_long_context; 18 #endif 19 20 static int cnss_pin_connect_show(struct seq_file *s, void *data) 21 { 22 struct cnss_plat_data *cnss_priv = s->private; 23 24 seq_puts(s, "Pin connect results\n"); 25 seq_printf(s, "FW power pin result: %04x\n", 26 cnss_priv->pin_result.fw_pwr_pin_result); 27 seq_printf(s, "FW PHY IO pin result: %04x\n", 28 cnss_priv->pin_result.fw_phy_io_pin_result); 29 seq_printf(s, "FW RF pin result: %04x\n", 30 cnss_priv->pin_result.fw_rf_pin_result); 31 seq_printf(s, "Host pin result: %04x\n", 32 cnss_priv->pin_result.host_pin_result); 33 seq_puts(s, "\n"); 34 35 return 0; 36 } 37 38 static int cnss_pin_connect_open(struct inode *inode, struct file *file) 39 { 40 return single_open(file, cnss_pin_connect_show, inode->i_private); 41 } 42 43 static const struct file_operations cnss_pin_connect_fops = { 44 .read = seq_read, 45 .release = single_release, 46 .open = cnss_pin_connect_open, 47 .owner = THIS_MODULE, 48 .llseek = seq_lseek, 49 }; 50 51 static int cnss_stats_show_state(struct seq_file *s, 52 struct cnss_plat_data *plat_priv) 53 { 54 enum cnss_driver_state i; 55 int skip = 0; 56 unsigned long state; 57 58 seq_printf(s, "\nState: 0x%lx(", plat_priv->driver_state); 59 for (i = 0, state = plat_priv->driver_state; state != 0; 60 state >>= 1, i++) { 61 if (!(state & 0x1)) 62 continue; 63 64 if (skip++) 65 seq_puts(s, " | "); 66 67 switch (i) { 68 case CNSS_QMI_WLFW_CONNECTED: 69 seq_puts(s, "QMI_WLFW_CONNECTED"); 70 continue; 71 case CNSS_FW_MEM_READY: 72 seq_puts(s, "FW_MEM_READY"); 73 continue; 74 case CNSS_FW_READY: 75 seq_puts(s, "FW_READY"); 76 continue; 77 case CNSS_IN_COLD_BOOT_CAL: 78 seq_puts(s, "IN_COLD_BOOT_CAL"); 79 continue; 80 case CNSS_DRIVER_LOADING: 81 seq_puts(s, "DRIVER_LOADING"); 82 continue; 83 case CNSS_DRIVER_UNLOADING: 84 seq_puts(s, "DRIVER_UNLOADING"); 85 continue; 86 case CNSS_DRIVER_IDLE_RESTART: 87 seq_puts(s, "IDLE_RESTART"); 88 continue; 89 case CNSS_DRIVER_IDLE_SHUTDOWN: 90 seq_puts(s, "IDLE_SHUTDOWN"); 91 continue; 92 case CNSS_DRIVER_PROBED: 93 seq_puts(s, "DRIVER_PROBED"); 94 continue; 95 case CNSS_DRIVER_RECOVERY: 96 seq_puts(s, "DRIVER_RECOVERY"); 97 continue; 98 case CNSS_FW_BOOT_RECOVERY: 99 seq_puts(s, "FW_BOOT_RECOVERY"); 100 continue; 101 case CNSS_DEV_ERR_NOTIFY: 102 seq_puts(s, "DEV_ERR"); 103 continue; 104 case CNSS_DRIVER_DEBUG: 105 seq_puts(s, "DRIVER_DEBUG"); 106 continue; 107 case CNSS_COEX_CONNECTED: 108 seq_puts(s, "COEX_CONNECTED"); 109 continue; 110 case CNSS_IMS_CONNECTED: 111 seq_puts(s, "IMS_CONNECTED"); 112 continue; 113 case CNSS_IN_SUSPEND_RESUME: 114 seq_puts(s, "IN_SUSPEND_RESUME"); 115 continue; 116 case CNSS_IN_REBOOT: 117 seq_puts(s, "IN_REBOOT"); 118 continue; 119 case CNSS_COLD_BOOT_CAL_DONE: 120 seq_puts(s, "COLD_BOOT_CAL_DONE"); 121 continue; 122 case CNSS_IN_PANIC: 123 seq_puts(s, "IN_PANIC"); 124 continue; 125 case CNSS_QMI_DEL_SERVER: 126 seq_puts(s, "DEL_SERVER_IN_PROGRESS"); 127 continue; 128 case CNSS_QMI_DMS_CONNECTED: 129 seq_puts(s, "DMS_CONNECTED"); 130 continue; 131 case CNSS_DAEMON_CONNECTED: 132 seq_puts(s, "DAEMON_CONNECTED"); 133 continue; 134 case CNSS_PCI_PROBE_DONE: 135 seq_puts(s, "PCI PROBE DONE"); 136 continue; 137 } 138 139 seq_printf(s, "UNKNOWN-%d", i); 140 } 141 seq_puts(s, ")\n"); 142 143 return 0; 144 } 145 146 static int cnss_stats_show(struct seq_file *s, void *data) 147 { 148 struct cnss_plat_data *plat_priv = s->private; 149 150 cnss_stats_show_state(s, plat_priv); 151 152 return 0; 153 } 154 155 static int cnss_stats_open(struct inode *inode, struct file *file) 156 { 157 return single_open(file, cnss_stats_show, inode->i_private); 158 } 159 160 static const struct file_operations cnss_stats_fops = { 161 .read = seq_read, 162 .release = single_release, 163 .open = cnss_stats_open, 164 .owner = THIS_MODULE, 165 .llseek = seq_lseek, 166 }; 167 168 static ssize_t cnss_dev_boot_debug_write(struct file *fp, 169 const char __user *user_buf, 170 size_t count, loff_t *off) 171 { 172 struct cnss_plat_data *plat_priv = 173 ((struct seq_file *)fp->private_data)->private; 174 struct cnss_pci_data *pci_priv; 175 char buf[64]; 176 char *cmd; 177 unsigned int len = 0; 178 int ret = 0; 179 180 if (!plat_priv) 181 return -ENODEV; 182 183 len = min(count, sizeof(buf) - 1); 184 if (copy_from_user(buf, user_buf, len)) 185 return -EFAULT; 186 187 buf[len] = '\0'; 188 cmd = buf; 189 cnss_pr_dbg("Received dev_boot debug command: %s\n", cmd); 190 191 if (sysfs_streq(cmd, "on")) { 192 ret = cnss_power_on_device(plat_priv); 193 } else if (sysfs_streq(cmd, "off")) { 194 cnss_power_off_device(plat_priv); 195 } else if (sysfs_streq(cmd, "enumerate")) { 196 ret = cnss_pci_init(plat_priv); 197 } else if (sysfs_streq(cmd, "powerup")) { 198 set_bit(CNSS_DRIVER_DEBUG, &plat_priv->driver_state); 199 ret = cnss_driver_event_post(plat_priv, 200 CNSS_DRIVER_EVENT_POWER_UP, 201 CNSS_EVENT_SYNC, NULL); 202 } else if (sysfs_streq(cmd, "shutdown")) { 203 ret = cnss_driver_event_post(plat_priv, 204 CNSS_DRIVER_EVENT_POWER_DOWN, 205 0, NULL); 206 clear_bit(CNSS_DRIVER_DEBUG, &plat_priv->driver_state); 207 } else { 208 pci_priv = plat_priv->bus_priv; 209 if (!pci_priv) 210 return -ENODEV; 211 212 if (sysfs_streq(cmd, "download")) { 213 set_bit(CNSS_DRIVER_DEBUG, &plat_priv->driver_state); 214 ret = cnss_pci_start_mhi(pci_priv); 215 } else if (sysfs_streq(cmd, "linkup")) { 216 ret = cnss_resume_pci_link(pci_priv); 217 } else if (sysfs_streq(cmd, "linkdown")) { 218 ret = cnss_suspend_pci_link(pci_priv); 219 } else if (sysfs_streq(cmd, "assert")) { 220 cnss_pr_info("FW Assert triggered for debug\n"); 221 ret = cnss_force_fw_assert(&pci_priv->pci_dev->dev); 222 } else if (sysfs_streq(cmd, "set_cbc_done")) { 223 cnss_pr_dbg("Force set cold boot cal done status\n"); 224 set_bit(CNSS_COLD_BOOT_CAL_DONE, 225 &plat_priv->driver_state); 226 } else { 227 cnss_pr_err("Device boot debugfs command is invalid\n"); 228 ret = -EINVAL; 229 } 230 } 231 232 if (ret < 0) 233 return ret; 234 235 return count; 236 } 237 238 static int cnss_dev_boot_debug_show(struct seq_file *s, void *data) 239 { 240 seq_puts(s, "\nUsage: echo <action> > <debugfs_path>/cnss/dev_boot\n"); 241 seq_puts(s, "<action> can be one of below:\n"); 242 seq_puts(s, "on: turn on device power, assert WLAN_EN\n"); 243 seq_puts(s, "off: de-assert WLAN_EN, turn off device power\n"); 244 seq_puts(s, "enumerate: de-assert PERST, enumerate PCIe\n"); 245 seq_puts(s, "download: download FW and do QMI handshake with FW\n"); 246 seq_puts(s, "linkup: bring up PCIe link\n"); 247 seq_puts(s, "linkdown: bring down PCIe link\n"); 248 seq_puts(s, "powerup: full power on sequence to boot device, download FW and do QMI handshake with FW\n"); 249 seq_puts(s, "shutdown: full power off sequence to shutdown device\n"); 250 seq_puts(s, "assert: trigger firmware assert\n"); 251 seq_puts(s, "set_cbc_done: Set cold boot calibration done status\n"); 252 253 return 0; 254 } 255 256 static int cnss_dev_boot_debug_open(struct inode *inode, struct file *file) 257 { 258 return single_open(file, cnss_dev_boot_debug_show, inode->i_private); 259 } 260 261 static const struct file_operations cnss_dev_boot_debug_fops = { 262 .read = seq_read, 263 .write = cnss_dev_boot_debug_write, 264 .release = single_release, 265 .open = cnss_dev_boot_debug_open, 266 .owner = THIS_MODULE, 267 .llseek = seq_lseek, 268 }; 269 270 static int cnss_reg_read_debug_show(struct seq_file *s, void *data) 271 { 272 struct cnss_plat_data *plat_priv = s->private; 273 274 mutex_lock(&plat_priv->dev_lock); 275 if (!plat_priv->diag_reg_read_buf) { 276 seq_puts(s, "\nUsage: echo <mem_type> <offset> <data_len> > <debugfs_path>/cnss/reg_read\n"); 277 seq_puts(s, "Use mem_type = 0xff for register read by IO access, data_len will be ignored\n"); 278 seq_puts(s, "Use mem_type = 0xfe for register read by raw IO access which skips sanity checks, data_len will be ignored\n"); 279 seq_puts(s, "Use other mem_type for register read by QMI\n"); 280 mutex_unlock(&plat_priv->dev_lock); 281 return 0; 282 } 283 284 seq_printf(s, "\nRegister read, address: 0x%x memory type: 0x%x length: 0x%x\n\n", 285 plat_priv->diag_reg_read_addr, 286 plat_priv->diag_reg_read_mem_type, 287 plat_priv->diag_reg_read_len); 288 289 seq_hex_dump(s, "", DUMP_PREFIX_OFFSET, 32, 4, 290 plat_priv->diag_reg_read_buf, 291 plat_priv->diag_reg_read_len, false); 292 293 plat_priv->diag_reg_read_len = 0; 294 kfree(plat_priv->diag_reg_read_buf); 295 plat_priv->diag_reg_read_buf = NULL; 296 mutex_unlock(&plat_priv->dev_lock); 297 298 return 0; 299 } 300 301 static ssize_t cnss_reg_read_debug_write(struct file *fp, 302 const char __user *user_buf, 303 size_t count, loff_t *off) 304 { 305 struct cnss_plat_data *plat_priv = 306 ((struct seq_file *)fp->private_data)->private; 307 char buf[64]; 308 char *sptr, *token; 309 unsigned int len = 0; 310 u32 reg_offset, mem_type; 311 u32 data_len = 0, reg_val = 0; 312 u8 *reg_buf = NULL; 313 const char *delim = " "; 314 int ret = 0; 315 316 len = min(count, sizeof(buf) - 1); 317 if (copy_from_user(buf, user_buf, len)) 318 return -EFAULT; 319 320 buf[len] = '\0'; 321 sptr = buf; 322 323 token = strsep(&sptr, delim); 324 if (!token) 325 return -EINVAL; 326 327 if (!sptr) 328 return -EINVAL; 329 330 if (kstrtou32(token, 0, &mem_type)) 331 return -EINVAL; 332 333 token = strsep(&sptr, delim); 334 if (!token) 335 return -EINVAL; 336 337 if (!sptr) 338 return -EINVAL; 339 340 if (kstrtou32(token, 0, ®_offset)) 341 return -EINVAL; 342 343 token = strsep(&sptr, delim); 344 if (!token) 345 return -EINVAL; 346 347 if (kstrtou32(token, 0, &data_len)) 348 return -EINVAL; 349 350 if (mem_type == MMIO_REG_ACCESS_MEM_TYPE || 351 mem_type == MMIO_REG_RAW_ACCESS_MEM_TYPE) { 352 ret = cnss_bus_debug_reg_read(plat_priv, reg_offset, ®_val, 353 mem_type == 354 MMIO_REG_RAW_ACCESS_MEM_TYPE); 355 if (ret) 356 return ret; 357 cnss_pr_dbg("Read 0x%x from register offset 0x%x\n", reg_val, 358 reg_offset); 359 return count; 360 } 361 362 if (!test_bit(CNSS_FW_READY, &plat_priv->driver_state)) { 363 cnss_pr_err("Firmware is not ready yet\n"); 364 return -EINVAL; 365 } 366 367 mutex_lock(&plat_priv->dev_lock); 368 kfree(plat_priv->diag_reg_read_buf); 369 plat_priv->diag_reg_read_buf = NULL; 370 371 reg_buf = kzalloc(data_len, GFP_KERNEL); 372 if (!reg_buf) { 373 mutex_unlock(&plat_priv->dev_lock); 374 return -ENOMEM; 375 } 376 377 ret = cnss_wlfw_athdiag_read_send_sync(plat_priv, reg_offset, 378 mem_type, data_len, 379 reg_buf); 380 if (ret) { 381 kfree(reg_buf); 382 mutex_unlock(&plat_priv->dev_lock); 383 return ret; 384 } 385 386 plat_priv->diag_reg_read_addr = reg_offset; 387 plat_priv->diag_reg_read_mem_type = mem_type; 388 plat_priv->diag_reg_read_len = data_len; 389 plat_priv->diag_reg_read_buf = reg_buf; 390 mutex_unlock(&plat_priv->dev_lock); 391 392 return count; 393 } 394 395 static int cnss_reg_read_debug_open(struct inode *inode, struct file *file) 396 { 397 return single_open(file, cnss_reg_read_debug_show, inode->i_private); 398 } 399 400 static const struct file_operations cnss_reg_read_debug_fops = { 401 .read = seq_read, 402 .write = cnss_reg_read_debug_write, 403 .open = cnss_reg_read_debug_open, 404 .owner = THIS_MODULE, 405 .llseek = seq_lseek, 406 }; 407 408 static int cnss_reg_write_debug_show(struct seq_file *s, void *data) 409 { 410 seq_puts(s, "\nUsage: echo <mem_type> <offset> <reg_val> > <debugfs_path>/cnss/reg_write\n"); 411 seq_puts(s, "Use mem_type = 0xff for register write by IO access\n"); 412 seq_puts(s, "Use mem_type = 0xfe for register write by raw IO access which skips sanity checks\n"); 413 seq_puts(s, "Use other mem_type for register write by QMI\n"); 414 415 return 0; 416 } 417 418 static ssize_t cnss_reg_write_debug_write(struct file *fp, 419 const char __user *user_buf, 420 size_t count, loff_t *off) 421 { 422 struct cnss_plat_data *plat_priv = 423 ((struct seq_file *)fp->private_data)->private; 424 char buf[64]; 425 char *sptr, *token; 426 unsigned int len = 0; 427 u32 reg_offset, mem_type, reg_val; 428 const char *delim = " "; 429 int ret = 0; 430 431 len = min(count, sizeof(buf) - 1); 432 if (copy_from_user(buf, user_buf, len)) 433 return -EFAULT; 434 435 buf[len] = '\0'; 436 sptr = buf; 437 438 token = strsep(&sptr, delim); 439 if (!token) 440 return -EINVAL; 441 442 if (!sptr) 443 return -EINVAL; 444 445 if (kstrtou32(token, 0, &mem_type)) 446 return -EINVAL; 447 448 token = strsep(&sptr, delim); 449 if (!token) 450 return -EINVAL; 451 452 if (!sptr) 453 return -EINVAL; 454 455 if (kstrtou32(token, 0, ®_offset)) 456 return -EINVAL; 457 458 token = strsep(&sptr, delim); 459 if (!token) 460 return -EINVAL; 461 462 if (kstrtou32(token, 0, ®_val)) 463 return -EINVAL; 464 465 if (mem_type == MMIO_REG_ACCESS_MEM_TYPE || 466 mem_type == MMIO_REG_RAW_ACCESS_MEM_TYPE) { 467 ret = cnss_bus_debug_reg_write(plat_priv, reg_offset, reg_val, 468 mem_type == 469 MMIO_REG_RAW_ACCESS_MEM_TYPE); 470 if (ret) 471 return ret; 472 cnss_pr_dbg("Wrote 0x%x to register offset 0x%x\n", reg_val, 473 reg_offset); 474 return count; 475 } 476 477 if (!test_bit(CNSS_FW_READY, &plat_priv->driver_state)) { 478 cnss_pr_err("Firmware is not ready yet\n"); 479 return -EINVAL; 480 } 481 482 ret = cnss_wlfw_athdiag_write_send_sync(plat_priv, reg_offset, mem_type, 483 sizeof(u32), 484 (u8 *)®_val); 485 if (ret) 486 return ret; 487 488 return count; 489 } 490 491 static int cnss_reg_write_debug_open(struct inode *inode, struct file *file) 492 { 493 return single_open(file, cnss_reg_write_debug_show, inode->i_private); 494 } 495 496 static const struct file_operations cnss_reg_write_debug_fops = { 497 .read = seq_read, 498 .write = cnss_reg_write_debug_write, 499 .open = cnss_reg_write_debug_open, 500 .owner = THIS_MODULE, 501 .llseek = seq_lseek, 502 }; 503 504 static ssize_t cnss_runtime_pm_debug_write(struct file *fp, 505 const char __user *user_buf, 506 size_t count, loff_t *off) 507 { 508 struct cnss_plat_data *plat_priv = 509 ((struct seq_file *)fp->private_data)->private; 510 struct cnss_pci_data *pci_priv; 511 char buf[64]; 512 char *cmd; 513 unsigned int len = 0; 514 int ret = 0; 515 516 if (!plat_priv) 517 return -ENODEV; 518 519 pci_priv = plat_priv->bus_priv; 520 if (!pci_priv) 521 return -ENODEV; 522 523 len = min(count, sizeof(buf) - 1); 524 if (copy_from_user(buf, user_buf, len)) 525 return -EFAULT; 526 527 buf[len] = '\0'; 528 cmd = buf; 529 530 if (sysfs_streq(cmd, "usage_count")) { 531 cnss_pci_pm_runtime_show_usage_count(pci_priv); 532 } else if (sysfs_streq(cmd, "request_resume")) { 533 ret = cnss_pci_pm_request_resume(pci_priv); 534 } else if (sysfs_streq(cmd, "resume")) { 535 ret = cnss_pci_pm_runtime_resume(pci_priv); 536 } else if (sysfs_streq(cmd, "get")) { 537 ret = cnss_pci_pm_runtime_get(pci_priv, RTPM_ID_CNSS); 538 } else if (sysfs_streq(cmd, "get_noresume")) { 539 cnss_pci_pm_runtime_get_noresume(pci_priv, RTPM_ID_CNSS); 540 } else if (sysfs_streq(cmd, "put_autosuspend")) { 541 ret = cnss_pci_pm_runtime_put_autosuspend(pci_priv, 542 RTPM_ID_CNSS); 543 } else if (sysfs_streq(cmd, "put_noidle")) { 544 cnss_pci_pm_runtime_put_noidle(pci_priv, RTPM_ID_CNSS); 545 } else if (sysfs_streq(cmd, "mark_last_busy")) { 546 cnss_pci_pm_runtime_mark_last_busy(pci_priv); 547 } else if (sysfs_streq(cmd, "resume_bus")) { 548 cnss_pci_resume_bus(pci_priv); 549 } else if (sysfs_streq(cmd, "suspend_bus")) { 550 cnss_pci_suspend_bus(pci_priv); 551 } else { 552 cnss_pr_err("Runtime PM debugfs command is invalid\n"); 553 ret = -EINVAL; 554 } 555 556 if (ret < 0) 557 return ret; 558 559 return count; 560 } 561 562 static int cnss_runtime_pm_debug_show(struct seq_file *s, void *data) 563 { 564 struct cnss_plat_data *plat_priv = s->private; 565 struct cnss_pci_data *pci_priv; 566 int i; 567 568 if (!plat_priv) 569 return -ENODEV; 570 571 pci_priv = plat_priv->bus_priv; 572 if (!pci_priv) 573 return -ENODEV; 574 575 seq_puts(s, "\nUsage: echo <action> > <debugfs_path>/cnss/runtime_pm\n"); 576 seq_puts(s, "<action> can be one of below:\n"); 577 seq_puts(s, "usage_count: get runtime PM usage count\n"); 578 seq_puts(s, "reques_resume: do async runtime PM resume\n"); 579 seq_puts(s, "resume: do sync runtime PM resume\n"); 580 seq_puts(s, "get: do runtime PM get\n"); 581 seq_puts(s, "get_noresume: do runtime PM get noresume\n"); 582 seq_puts(s, "put_noidle: do runtime PM put noidle\n"); 583 seq_puts(s, "put_autosuspend: do runtime PM put autosuspend\n"); 584 seq_puts(s, "mark_last_busy: do runtime PM mark last busy\n"); 585 seq_puts(s, "resume_bus: do bus resume only\n"); 586 seq_puts(s, "suspend_bus: do bus suspend only\n"); 587 588 seq_puts(s, "\nStats:\n"); 589 seq_printf(s, "%s: %u\n", "get count", 590 atomic_read(&pci_priv->pm_stats.runtime_get)); 591 seq_printf(s, "%s: %u\n", "put count", 592 atomic_read(&pci_priv->pm_stats.runtime_put)); 593 seq_printf(s, "%-10s%-10s%-10s%-15s%-15s\n", 594 "id:", "get", "put", "get time(us)", "put time(us)"); 595 for (i = 0; i < RTPM_ID_MAX; i++) { 596 seq_printf(s, "%d%-9s", i, ":"); 597 seq_printf(s, "%-10d", 598 atomic_read(&pci_priv->pm_stats.runtime_get_id[i])); 599 seq_printf(s, "%-10d", 600 atomic_read(&pci_priv->pm_stats.runtime_put_id[i])); 601 seq_printf(s, "%-15llu", 602 pci_priv->pm_stats.runtime_get_timestamp_id[i]); 603 seq_printf(s, "%-15llu\n", 604 pci_priv->pm_stats.runtime_put_timestamp_id[i]); 605 } 606 607 return 0; 608 } 609 610 static int cnss_runtime_pm_debug_open(struct inode *inode, struct file *file) 611 { 612 return single_open(file, cnss_runtime_pm_debug_show, inode->i_private); 613 } 614 615 static const struct file_operations cnss_runtime_pm_debug_fops = { 616 .read = seq_read, 617 .write = cnss_runtime_pm_debug_write, 618 .open = cnss_runtime_pm_debug_open, 619 .owner = THIS_MODULE, 620 .llseek = seq_lseek, 621 }; 622 623 static ssize_t cnss_control_params_debug_write(struct file *fp, 624 const char __user *user_buf, 625 size_t count, loff_t *off) 626 { 627 struct cnss_plat_data *plat_priv = 628 ((struct seq_file *)fp->private_data)->private; 629 char buf[64]; 630 char *sptr, *token; 631 char *cmd; 632 u32 val; 633 unsigned int len = 0; 634 const char *delim = " "; 635 636 if (!plat_priv) 637 return -ENODEV; 638 639 len = min(count, sizeof(buf) - 1); 640 if (copy_from_user(buf, user_buf, len)) 641 return -EFAULT; 642 643 buf[len] = '\0'; 644 sptr = buf; 645 646 token = strsep(&sptr, delim); 647 if (!token) 648 return -EINVAL; 649 if (!sptr) 650 return -EINVAL; 651 cmd = token; 652 653 token = strsep(&sptr, delim); 654 if (!token) 655 return -EINVAL; 656 if (kstrtou32(token, 0, &val)) 657 return -EINVAL; 658 659 if (strcmp(cmd, "quirks") == 0) 660 plat_priv->ctrl_params.quirks = val; 661 else if (strcmp(cmd, "mhi_timeout") == 0) 662 plat_priv->ctrl_params.mhi_timeout = val; 663 else if (strcmp(cmd, "mhi_m2_timeout") == 0) 664 plat_priv->ctrl_params.mhi_m2_timeout = val; 665 else if (strcmp(cmd, "qmi_timeout") == 0) 666 plat_priv->ctrl_params.qmi_timeout = val; 667 else if (strcmp(cmd, "bdf_type") == 0) 668 plat_priv->ctrl_params.bdf_type = val; 669 else if (strcmp(cmd, "time_sync_period") == 0) 670 plat_priv->ctrl_params.time_sync_period = val; 671 else 672 return -EINVAL; 673 674 return count; 675 } 676 677 static int cnss_show_quirks_state(struct seq_file *s, 678 struct cnss_plat_data *plat_priv) 679 { 680 enum cnss_debug_quirks i; 681 int skip = 0; 682 unsigned long state; 683 684 seq_printf(s, "quirks: 0x%lx (", plat_priv->ctrl_params.quirks); 685 for (i = 0, state = plat_priv->ctrl_params.quirks; 686 state != 0; state >>= 1, i++) { 687 if (!(state & 0x1)) 688 continue; 689 if (skip++) 690 seq_puts(s, " | "); 691 692 switch (i) { 693 case LINK_DOWN_SELF_RECOVERY: 694 seq_puts(s, "LINK_DOWN_SELF_RECOVERY"); 695 continue; 696 case SKIP_DEVICE_BOOT: 697 seq_puts(s, "SKIP_DEVICE_BOOT"); 698 continue; 699 case USE_CORE_ONLY_FW: 700 seq_puts(s, "USE_CORE_ONLY_FW"); 701 continue; 702 case SKIP_RECOVERY: 703 seq_puts(s, "SKIP_RECOVERY"); 704 continue; 705 case QMI_BYPASS: 706 seq_puts(s, "QMI_BYPASS"); 707 continue; 708 case ENABLE_WALTEST: 709 seq_puts(s, "WALTEST"); 710 continue; 711 case ENABLE_PCI_LINK_DOWN_PANIC: 712 seq_puts(s, "PCI_LINK_DOWN_PANIC"); 713 continue; 714 case FBC_BYPASS: 715 seq_puts(s, "FBC_BYPASS"); 716 continue; 717 case ENABLE_DAEMON_SUPPORT: 718 seq_puts(s, "DAEMON_SUPPORT"); 719 continue; 720 case DISABLE_DRV: 721 seq_puts(s, "DISABLE_DRV"); 722 continue; 723 case DISABLE_IO_COHERENCY: 724 seq_puts(s, "DISABLE_IO_COHERENCY"); 725 continue; 726 case IGNORE_PCI_LINK_FAILURE: 727 seq_puts(s, "IGNORE_PCI_LINK_FAILURE"); 728 continue; 729 case DISABLE_TIME_SYNC: 730 seq_puts(s, "DISABLE_TIME_SYNC"); 731 continue; 732 } 733 734 seq_printf(s, "UNKNOWN-%d", i); 735 } 736 seq_puts(s, ")\n"); 737 return 0; 738 } 739 740 static int cnss_control_params_debug_show(struct seq_file *s, void *data) 741 { 742 struct cnss_plat_data *cnss_priv = s->private; 743 744 seq_puts(s, "\nUsage: echo <params_name> <value> > <debugfs_path>/cnss/control_params\n"); 745 seq_puts(s, "<params_name> can be one of below:\n"); 746 seq_puts(s, "quirks: Debug quirks for driver\n"); 747 seq_puts(s, "mhi_timeout: Timeout for MHI operation in milliseconds\n"); 748 seq_puts(s, "qmi_timeout: Timeout for QMI message in milliseconds\n"); 749 seq_puts(s, "bdf_type: Type of board data file to be downloaded\n"); 750 seq_puts(s, "time_sync_period: Time period to do time sync with device in milliseconds\n"); 751 752 seq_puts(s, "\nCurrent value:\n"); 753 cnss_show_quirks_state(s, cnss_priv); 754 seq_printf(s, "mhi_timeout: %u\n", cnss_priv->ctrl_params.mhi_timeout); 755 seq_printf(s, "mhi_m2_timeout: %u\n", 756 cnss_priv->ctrl_params.mhi_m2_timeout); 757 seq_printf(s, "qmi_timeout: %u\n", cnss_priv->ctrl_params.qmi_timeout); 758 seq_printf(s, "bdf_type: %u\n", cnss_priv->ctrl_params.bdf_type); 759 seq_printf(s, "time_sync_period: %u\n", 760 cnss_priv->ctrl_params.time_sync_period); 761 762 return 0; 763 } 764 765 static int cnss_control_params_debug_open(struct inode *inode, 766 struct file *file) 767 { 768 return single_open(file, cnss_control_params_debug_show, 769 inode->i_private); 770 } 771 772 static const struct file_operations cnss_control_params_debug_fops = { 773 .read = seq_read, 774 .write = cnss_control_params_debug_write, 775 .open = cnss_control_params_debug_open, 776 .owner = THIS_MODULE, 777 .llseek = seq_lseek, 778 }; 779 780 static ssize_t cnss_dynamic_feature_write(struct file *fp, 781 const char __user *user_buf, 782 size_t count, loff_t *off) 783 { 784 struct cnss_plat_data *plat_priv = 785 ((struct seq_file *)fp->private_data)->private; 786 int ret = 0; 787 u64 val; 788 789 ret = kstrtou64_from_user(user_buf, count, 0, &val); 790 if (ret) 791 return ret; 792 793 plat_priv->dynamic_feature = val; 794 ret = cnss_wlfw_dynamic_feature_mask_send_sync(plat_priv); 795 if (ret < 0) 796 return ret; 797 798 return count; 799 } 800 801 static int cnss_dynamic_feature_show(struct seq_file *s, void *data) 802 { 803 struct cnss_plat_data *cnss_priv = s->private; 804 805 seq_printf(s, "dynamic_feature: 0x%llx\n", cnss_priv->dynamic_feature); 806 807 return 0; 808 } 809 810 static int cnss_dynamic_feature_open(struct inode *inode, 811 struct file *file) 812 { 813 return single_open(file, cnss_dynamic_feature_show, 814 inode->i_private); 815 } 816 817 static const struct file_operations cnss_dynamic_feature_fops = { 818 .read = seq_read, 819 .write = cnss_dynamic_feature_write, 820 .open = cnss_dynamic_feature_open, 821 .owner = THIS_MODULE, 822 .llseek = seq_lseek, 823 }; 824 825 #ifdef CONFIG_DEBUG_FS 826 #ifdef CONFIG_CNSS2_DEBUG 827 static int cnss_create_debug_only_node(struct cnss_plat_data *plat_priv) 828 { 829 struct dentry *root_dentry = plat_priv->root_dentry; 830 831 debugfs_create_file("dev_boot", 0600, root_dentry, plat_priv, 832 &cnss_dev_boot_debug_fops); 833 debugfs_create_file("reg_read", 0600, root_dentry, plat_priv, 834 &cnss_reg_read_debug_fops); 835 debugfs_create_file("reg_write", 0600, root_dentry, plat_priv, 836 &cnss_reg_write_debug_fops); 837 debugfs_create_file("runtime_pm", 0600, root_dentry, plat_priv, 838 &cnss_runtime_pm_debug_fops); 839 debugfs_create_file("control_params", 0600, root_dentry, plat_priv, 840 &cnss_control_params_debug_fops); 841 debugfs_create_file("dynamic_feature", 0600, root_dentry, plat_priv, 842 &cnss_dynamic_feature_fops); 843 844 return 0; 845 } 846 #else 847 static int cnss_create_debug_only_node(struct cnss_plat_data *plat_priv) 848 { 849 return 0; 850 } 851 #endif 852 853 int cnss_debugfs_create(struct cnss_plat_data *plat_priv) 854 { 855 int ret = 0; 856 struct dentry *root_dentry; 857 858 root_dentry = debugfs_create_dir("cnss", 0); 859 if (IS_ERR(root_dentry)) { 860 ret = PTR_ERR(root_dentry); 861 cnss_pr_err("Unable to create debugfs %d\n", ret); 862 goto out; 863 } 864 865 plat_priv->root_dentry = root_dentry; 866 867 debugfs_create_file("pin_connect_result", 0644, root_dentry, plat_priv, 868 &cnss_pin_connect_fops); 869 debugfs_create_file("stats", 0644, root_dentry, plat_priv, 870 &cnss_stats_fops); 871 872 cnss_create_debug_only_node(plat_priv); 873 874 out: 875 return ret; 876 } 877 878 void cnss_debugfs_destroy(struct cnss_plat_data *plat_priv) 879 { 880 debugfs_remove_recursive(plat_priv->root_dentry); 881 } 882 #else 883 int cnss_debugfs_create(struct cnss_plat_data *plat_priv) 884 { 885 plat_priv->root_dentry = NULL; 886 return 0; 887 } 888 889 void cnss_debugfs_destroy(struct cnss_plat_data *plat_priv) 890 { 891 } 892 #endif 893 894 #if IS_ENABLED(CONFIG_IPC_LOGGING) 895 void cnss_debug_ipc_log_print(void *log_ctx, char *process, const char *fn, 896 const char *log_level, char *fmt, ...) 897 { 898 struct va_format vaf; 899 va_list va_args; 900 901 va_start(va_args, fmt); 902 vaf.fmt = fmt; 903 vaf.va = &va_args; 904 905 if (log_level) 906 printk("%scnss: %pV", log_level, &vaf); 907 908 ipc_log_string(log_ctx, "[%s] %s: %pV", process, fn, &vaf); 909 910 va_end(va_args); 911 } 912 913 static int cnss_ipc_logging_init(void) 914 { 915 cnss_ipc_log_context = ipc_log_context_create(CNSS_IPC_LOG_PAGES, 916 "cnss", 0); 917 if (!cnss_ipc_log_context) { 918 cnss_pr_err("Unable to create IPC log context\n"); 919 return -EINVAL; 920 } 921 922 cnss_ipc_log_long_context = ipc_log_context_create(CNSS_IPC_LOG_PAGES, 923 "cnss-long", 0); 924 if (!cnss_ipc_log_long_context) { 925 cnss_pr_err("Unable to create IPC long log context\n"); 926 ipc_log_context_destroy(cnss_ipc_log_context); 927 return -EINVAL; 928 } 929 930 return 0; 931 } 932 933 static void cnss_ipc_logging_deinit(void) 934 { 935 if (cnss_ipc_log_long_context) { 936 ipc_log_context_destroy(cnss_ipc_log_long_context); 937 cnss_ipc_log_long_context = NULL; 938 } 939 940 if (cnss_ipc_log_context) { 941 ipc_log_context_destroy(cnss_ipc_log_context); 942 cnss_ipc_log_context = NULL; 943 } 944 } 945 #else 946 static int cnss_ipc_logging_init(void) { return 0; } 947 static void cnss_ipc_logging_deinit(void) {} 948 void cnss_debug_ipc_log_print(void *log_ctx, char *process, const char *fn, 949 const char *log_level, char *fmt, ...) 950 { 951 struct va_format vaf; 952 va_list va_args; 953 954 va_start(va_args, fmt); 955 vaf.fmt = fmt; 956 vaf.va = &va_args; 957 958 if (log_level) 959 printk("%scnss: %pV", log_level, &vaf); 960 961 va_end(va_args); 962 } 963 #endif 964 965 int cnss_debug_init(void) 966 { 967 return cnss_ipc_logging_init(); 968 } 969 970 void cnss_debug_deinit(void) 971 { 972 cnss_ipc_logging_deinit(); 973 } 974