1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /****************************************************************************** 3 * 4 * Module Name: utdebug - Debug print/trace routines 5 * 6 * Copyright (C) 2000 - 2021, Intel Corp. 7 * 8 *****************************************************************************/ 9 10 #define EXPORT_ACPI_INTERFACES 11 12 #include <acpi/acpi.h> 13 #include "accommon.h" 14 #include "acinterp.h" 15 16 #define _COMPONENT ACPI_UTILITIES 17 ACPI_MODULE_NAME("utdebug") 18 19 #ifdef ACPI_DEBUG_OUTPUT 20 static acpi_thread_id acpi_gbl_previous_thread_id = (acpi_thread_id) 0xFFFFFFFF; 21 static const char *acpi_gbl_function_entry_prefix = "----Entry"; 22 static const char *acpi_gbl_function_exit_prefix = "----Exit-"; 23 24 /******************************************************************************* 25 * 26 * FUNCTION: acpi_ut_init_stack_ptr_trace 27 * 28 * PARAMETERS: None 29 * 30 * RETURN: None 31 * 32 * DESCRIPTION: Save the current CPU stack pointer at subsystem startup 33 * 34 ******************************************************************************/ 35 36 void acpi_ut_init_stack_ptr_trace(void) 37 { 38 acpi_size current_sp; 39 40 acpi_gbl_entry_stack_pointer = ¤t_sp; 41 } 42 43 /******************************************************************************* 44 * 45 * FUNCTION: acpi_ut_track_stack_ptr 46 * 47 * PARAMETERS: None 48 * 49 * RETURN: None 50 * 51 * DESCRIPTION: Save the current CPU stack pointer 52 * 53 ******************************************************************************/ 54 55 void acpi_ut_track_stack_ptr(void) 56 { 57 acpi_size current_sp; 58 59 if (¤t_sp < acpi_gbl_lowest_stack_pointer) { 60 acpi_gbl_lowest_stack_pointer = ¤t_sp; 61 } 62 63 if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) { 64 acpi_gbl_deepest_nesting = acpi_gbl_nesting_level; 65 } 66 } 67 68 /******************************************************************************* 69 * 70 * FUNCTION: acpi_ut_trim_function_name 71 * 72 * PARAMETERS: function_name - Ascii string containing a procedure name 73 * 74 * RETURN: Updated pointer to the function name 75 * 76 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present. 77 * This allows compiler macros such as __func__ to be used 78 * with no change to the debug output. 79 * 80 ******************************************************************************/ 81 82 static const char *acpi_ut_trim_function_name(const char *function_name) 83 { 84 85 /* All Function names are longer than 4 chars, check is safe */ 86 87 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) { 88 89 /* This is the case where the original source has not been modified */ 90 91 return (function_name + 4); 92 } 93 94 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) { 95 96 /* This is the case where the source has been 'linuxized' */ 97 98 return (function_name + 5); 99 } 100 101 return (function_name); 102 } 103 104 /******************************************************************************* 105 * 106 * FUNCTION: acpi_debug_print 107 * 108 * PARAMETERS: requested_debug_level - Requested debug print level 109 * line_number - Caller's line number (for error output) 110 * function_name - Caller's procedure name 111 * module_name - Caller's module name 112 * component_id - Caller's component ID 113 * format - Printf format field 114 * ... - Optional printf arguments 115 * 116 * RETURN: None 117 * 118 * DESCRIPTION: Print error message with prefix consisting of the module name, 119 * line number, and component ID. 120 * 121 ******************************************************************************/ 122 123 void ACPI_INTERNAL_VAR_XFACE 124 acpi_debug_print(u32 requested_debug_level, 125 u32 line_number, 126 const char *function_name, 127 const char *module_name, 128 u32 component_id, const char *format, ...) 129 { 130 acpi_thread_id thread_id; 131 va_list args; 132 #ifdef ACPI_APPLICATION 133 int fill_count; 134 #endif 135 136 /* Check if debug output enabled */ 137 138 if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) { 139 return; 140 } 141 142 /* 143 * Thread tracking and context switch notification 144 */ 145 thread_id = acpi_os_get_thread_id(); 146 if (thread_id != acpi_gbl_previous_thread_id) { 147 if (ACPI_LV_THREADS & acpi_dbg_level) { 148 acpi_os_printf 149 ("\n**** Context Switch from TID %u to TID %u ****\n\n", 150 (u32)acpi_gbl_previous_thread_id, (u32)thread_id); 151 } 152 153 acpi_gbl_previous_thread_id = thread_id; 154 acpi_gbl_nesting_level = 0; 155 } 156 157 /* 158 * Display the module name, current line number, thread ID (if requested), 159 * current procedure nesting level, and the current procedure name 160 */ 161 acpi_os_printf("%9s-%04d ", module_name, line_number); 162 163 #ifdef ACPI_APPLICATION 164 /* 165 * For acpi_exec/iASL only, emit the thread ID and nesting level. 166 * Note: nesting level is really only useful during a single-thread 167 * execution. Otherwise, multiple threads will keep resetting the 168 * level. 169 */ 170 if (ACPI_LV_THREADS & acpi_dbg_level) { 171 acpi_os_printf("[%u] ", (u32)thread_id); 172 } 173 174 fill_count = 48 - acpi_gbl_nesting_level - 175 strlen(acpi_ut_trim_function_name(function_name)); 176 if (fill_count < 0) { 177 fill_count = 0; 178 } 179 180 acpi_os_printf("[%02d] %*s", 181 acpi_gbl_nesting_level, acpi_gbl_nesting_level + 1, " "); 182 acpi_os_printf("%s%*s: ", 183 acpi_ut_trim_function_name(function_name), fill_count, 184 " "); 185 186 #else 187 acpi_os_printf("%-22.22s: ", acpi_ut_trim_function_name(function_name)); 188 #endif 189 190 va_start(args, format); 191 acpi_os_vprintf(format, args); 192 va_end(args); 193 } 194 195 ACPI_EXPORT_SYMBOL(acpi_debug_print) 196 197 /******************************************************************************* 198 * 199 * FUNCTION: acpi_debug_print_raw 200 * 201 * PARAMETERS: requested_debug_level - Requested debug print level 202 * line_number - Caller's line number 203 * function_name - Caller's procedure name 204 * module_name - Caller's module name 205 * component_id - Caller's component ID 206 * format - Printf format field 207 * ... - Optional printf arguments 208 * 209 * RETURN: None 210 * 211 * DESCRIPTION: Print message with no headers. Has same interface as 212 * debug_print so that the same macros can be used. 213 * 214 ******************************************************************************/ 215 void ACPI_INTERNAL_VAR_XFACE 216 acpi_debug_print_raw(u32 requested_debug_level, 217 u32 line_number, 218 const char *function_name, 219 const char *module_name, 220 u32 component_id, const char *format, ...) 221 { 222 va_list args; 223 224 /* Check if debug output enabled */ 225 226 if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) { 227 return; 228 } 229 230 va_start(args, format); 231 acpi_os_vprintf(format, args); 232 va_end(args); 233 } 234 235 ACPI_EXPORT_SYMBOL(acpi_debug_print_raw) 236 237 /******************************************************************************* 238 * 239 * FUNCTION: acpi_ut_trace 240 * 241 * PARAMETERS: line_number - Caller's line number 242 * function_name - Caller's procedure name 243 * module_name - Caller's module name 244 * component_id - Caller's component ID 245 * 246 * RETURN: None 247 * 248 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is 249 * set in debug_level 250 * 251 ******************************************************************************/ 252 void 253 acpi_ut_trace(u32 line_number, 254 const char *function_name, 255 const char *module_name, u32 component_id) 256 { 257 258 acpi_gbl_nesting_level++; 259 acpi_ut_track_stack_ptr(); 260 261 /* Check if enabled up-front for performance */ 262 263 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 264 acpi_debug_print(ACPI_LV_FUNCTIONS, 265 line_number, function_name, module_name, 266 component_id, "%s\n", 267 acpi_gbl_function_entry_prefix); 268 } 269 } 270 271 ACPI_EXPORT_SYMBOL(acpi_ut_trace) 272 273 /******************************************************************************* 274 * 275 * FUNCTION: acpi_ut_trace_ptr 276 * 277 * PARAMETERS: line_number - Caller's line number 278 * function_name - Caller's procedure name 279 * module_name - Caller's module name 280 * component_id - Caller's component ID 281 * pointer - Pointer to display 282 * 283 * RETURN: None 284 * 285 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is 286 * set in debug_level 287 * 288 ******************************************************************************/ 289 void 290 acpi_ut_trace_ptr(u32 line_number, 291 const char *function_name, 292 const char *module_name, 293 u32 component_id, const void *pointer) 294 { 295 296 acpi_gbl_nesting_level++; 297 acpi_ut_track_stack_ptr(); 298 299 /* Check if enabled up-front for performance */ 300 301 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 302 acpi_debug_print(ACPI_LV_FUNCTIONS, 303 line_number, function_name, module_name, 304 component_id, "%s %p\n", 305 acpi_gbl_function_entry_prefix, pointer); 306 } 307 } 308 309 /******************************************************************************* 310 * 311 * FUNCTION: acpi_ut_trace_str 312 * 313 * PARAMETERS: line_number - Caller's line number 314 * function_name - Caller's procedure name 315 * module_name - Caller's module name 316 * component_id - Caller's component ID 317 * string - Additional string to display 318 * 319 * RETURN: None 320 * 321 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is 322 * set in debug_level 323 * 324 ******************************************************************************/ 325 326 void 327 acpi_ut_trace_str(u32 line_number, 328 const char *function_name, 329 const char *module_name, u32 component_id, const char *string) 330 { 331 332 acpi_gbl_nesting_level++; 333 acpi_ut_track_stack_ptr(); 334 335 /* Check if enabled up-front for performance */ 336 337 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 338 acpi_debug_print(ACPI_LV_FUNCTIONS, 339 line_number, function_name, module_name, 340 component_id, "%s %s\n", 341 acpi_gbl_function_entry_prefix, string); 342 } 343 } 344 345 /******************************************************************************* 346 * 347 * FUNCTION: acpi_ut_trace_u32 348 * 349 * PARAMETERS: line_number - Caller's line number 350 * function_name - Caller's procedure name 351 * module_name - Caller's module name 352 * component_id - Caller's component ID 353 * integer - Integer to display 354 * 355 * RETURN: None 356 * 357 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is 358 * set in debug_level 359 * 360 ******************************************************************************/ 361 362 void 363 acpi_ut_trace_u32(u32 line_number, 364 const char *function_name, 365 const char *module_name, u32 component_id, u32 integer) 366 { 367 368 acpi_gbl_nesting_level++; 369 acpi_ut_track_stack_ptr(); 370 371 /* Check if enabled up-front for performance */ 372 373 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 374 acpi_debug_print(ACPI_LV_FUNCTIONS, 375 line_number, function_name, module_name, 376 component_id, "%s %08X\n", 377 acpi_gbl_function_entry_prefix, integer); 378 } 379 } 380 381 /******************************************************************************* 382 * 383 * FUNCTION: acpi_ut_exit 384 * 385 * PARAMETERS: line_number - Caller's line number 386 * function_name - Caller's procedure name 387 * module_name - Caller's module name 388 * component_id - Caller's component ID 389 * 390 * RETURN: None 391 * 392 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is 393 * set in debug_level 394 * 395 ******************************************************************************/ 396 397 void 398 acpi_ut_exit(u32 line_number, 399 const char *function_name, 400 const char *module_name, u32 component_id) 401 { 402 403 /* Check if enabled up-front for performance */ 404 405 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 406 acpi_debug_print(ACPI_LV_FUNCTIONS, 407 line_number, function_name, module_name, 408 component_id, "%s\n", 409 acpi_gbl_function_exit_prefix); 410 } 411 412 if (acpi_gbl_nesting_level) { 413 acpi_gbl_nesting_level--; 414 } 415 } 416 417 ACPI_EXPORT_SYMBOL(acpi_ut_exit) 418 419 /******************************************************************************* 420 * 421 * FUNCTION: acpi_ut_status_exit 422 * 423 * PARAMETERS: line_number - Caller's line number 424 * function_name - Caller's procedure name 425 * module_name - Caller's module name 426 * component_id - Caller's component ID 427 * status - Exit status code 428 * 429 * RETURN: None 430 * 431 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is 432 * set in debug_level. Prints exit status also. 433 * 434 ******************************************************************************/ 435 void 436 acpi_ut_status_exit(u32 line_number, 437 const char *function_name, 438 const char *module_name, 439 u32 component_id, acpi_status status) 440 { 441 442 /* Check if enabled up-front for performance */ 443 444 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 445 if (ACPI_SUCCESS(status)) { 446 acpi_debug_print(ACPI_LV_FUNCTIONS, 447 line_number, function_name, 448 module_name, component_id, "%s %s\n", 449 acpi_gbl_function_exit_prefix, 450 acpi_format_exception(status)); 451 } else { 452 acpi_debug_print(ACPI_LV_FUNCTIONS, 453 line_number, function_name, 454 module_name, component_id, 455 "%s ****Exception****: %s\n", 456 acpi_gbl_function_exit_prefix, 457 acpi_format_exception(status)); 458 } 459 } 460 461 if (acpi_gbl_nesting_level) { 462 acpi_gbl_nesting_level--; 463 } 464 } 465 466 ACPI_EXPORT_SYMBOL(acpi_ut_status_exit) 467 468 /******************************************************************************* 469 * 470 * FUNCTION: acpi_ut_value_exit 471 * 472 * PARAMETERS: line_number - Caller's line number 473 * function_name - Caller's procedure name 474 * module_name - Caller's module name 475 * component_id - Caller's component ID 476 * value - Value to be printed with exit msg 477 * 478 * RETURN: None 479 * 480 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is 481 * set in debug_level. Prints exit value also. 482 * 483 ******************************************************************************/ 484 void 485 acpi_ut_value_exit(u32 line_number, 486 const char *function_name, 487 const char *module_name, u32 component_id, u64 value) 488 { 489 490 /* Check if enabled up-front for performance */ 491 492 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 493 acpi_debug_print(ACPI_LV_FUNCTIONS, 494 line_number, function_name, module_name, 495 component_id, "%s %8.8X%8.8X\n", 496 acpi_gbl_function_exit_prefix, 497 ACPI_FORMAT_UINT64(value)); 498 } 499 500 if (acpi_gbl_nesting_level) { 501 acpi_gbl_nesting_level--; 502 } 503 } 504 505 ACPI_EXPORT_SYMBOL(acpi_ut_value_exit) 506 507 /******************************************************************************* 508 * 509 * FUNCTION: acpi_ut_ptr_exit 510 * 511 * PARAMETERS: line_number - Caller's line number 512 * function_name - Caller's procedure name 513 * module_name - Caller's module name 514 * component_id - Caller's component ID 515 * ptr - Pointer to display 516 * 517 * RETURN: None 518 * 519 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is 520 * set in debug_level. Prints exit value also. 521 * 522 ******************************************************************************/ 523 void 524 acpi_ut_ptr_exit(u32 line_number, 525 const char *function_name, 526 const char *module_name, u32 component_id, u8 *ptr) 527 { 528 529 /* Check if enabled up-front for performance */ 530 531 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 532 acpi_debug_print(ACPI_LV_FUNCTIONS, 533 line_number, function_name, module_name, 534 component_id, "%s %p\n", 535 acpi_gbl_function_exit_prefix, ptr); 536 } 537 538 if (acpi_gbl_nesting_level) { 539 acpi_gbl_nesting_level--; 540 } 541 } 542 543 /******************************************************************************* 544 * 545 * FUNCTION: acpi_ut_str_exit 546 * 547 * PARAMETERS: line_number - Caller's line number 548 * function_name - Caller's procedure name 549 * module_name - Caller's module name 550 * component_id - Caller's component ID 551 * string - String to display 552 * 553 * RETURN: None 554 * 555 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is 556 * set in debug_level. Prints exit value also. 557 * 558 ******************************************************************************/ 559 560 void 561 acpi_ut_str_exit(u32 line_number, 562 const char *function_name, 563 const char *module_name, u32 component_id, const char *string) 564 { 565 566 /* Check if enabled up-front for performance */ 567 568 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { 569 acpi_debug_print(ACPI_LV_FUNCTIONS, 570 line_number, function_name, module_name, 571 component_id, "%s %s\n", 572 acpi_gbl_function_exit_prefix, string); 573 } 574 575 if (acpi_gbl_nesting_level) { 576 acpi_gbl_nesting_level--; 577 } 578 } 579 580 /******************************************************************************* 581 * 582 * FUNCTION: acpi_trace_point 583 * 584 * PARAMETERS: type - Trace event type 585 * begin - TRUE if before execution 586 * aml - Executed AML address 587 * pathname - Object path 588 * pointer - Pointer to the related object 589 * 590 * RETURN: None 591 * 592 * DESCRIPTION: Interpreter execution trace. 593 * 594 ******************************************************************************/ 595 596 void 597 acpi_trace_point(acpi_trace_event_type type, u8 begin, u8 *aml, char *pathname) 598 { 599 600 ACPI_FUNCTION_ENTRY(); 601 602 acpi_ex_trace_point(type, begin, aml, pathname); 603 604 #ifdef ACPI_USE_SYSTEM_TRACER 605 acpi_os_trace_point(type, begin, aml, pathname); 606 #endif 607 } 608 609 ACPI_EXPORT_SYMBOL(acpi_trace_point) 610 611 #endif 612