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linux/drivers/acpi/acpica/utdebug.c

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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utdebug - Debug print/trace routines
*
* Copyright (C) 2000 - 2019, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utdebug")
#ifdef ACPI_DEBUG_OUTPUT
static acpi_thread_id acpi_gbl_previous_thread_id = (acpi_thread_id) 0xFFFFFFFF;
static const char *acpi_gbl_function_entry_prefix = "----Entry";
static const char *acpi_gbl_function_exit_prefix = "----Exit-";
/*******************************************************************************
*
* FUNCTION: acpi_ut_init_stack_ptr_trace
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Save the current CPU stack pointer at subsystem startup
*
******************************************************************************/
void acpi_ut_init_stack_ptr_trace(void)
{
acpi_size current_sp;
acpi_gbl_entry_stack_pointer = &current_sp;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_track_stack_ptr
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Save the current CPU stack pointer
*
******************************************************************************/
void acpi_ut_track_stack_ptr(void)
{
acpi_size current_sp;
if (&current_sp < acpi_gbl_lowest_stack_pointer) {
acpi_gbl_lowest_stack_pointer = &current_sp;
}
if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trim_function_name
*
* PARAMETERS: function_name - Ascii string containing a procedure name
*
* RETURN: Updated pointer to the function name
*
* DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
* This allows compiler macros such as __func__ to be used
* with no change to the debug output.
*
******************************************************************************/
static const char *acpi_ut_trim_function_name(const char *function_name)
{
/* All Function names are longer than 4 chars, check is safe */
if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) {
/* This is the case where the original source has not been modified */
return (function_name + 4);
}
if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) {
/* This is the case where the source has been 'linuxized' */
return (function_name + 5);
}
return (function_name);
}
/*******************************************************************************
*
* FUNCTION: acpi_debug_print
*
* PARAMETERS: requested_debug_level - Requested debug print level
* line_number - Caller's line number (for error output)
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* format - Printf format field
* ... - Optional printf arguments
*
* RETURN: None
*
* DESCRIPTION: Print error message with prefix consisting of the module name,
* line number, and component ID.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print(u32 requested_debug_level,
u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const char *format, ...)
{
acpi_thread_id thread_id;
va_list args;
#ifdef ACPI_APPLICATION
int fill_count;
#endif
/* Check if debug output enabled */
if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
return;
}
/*
* Thread tracking and context switch notification
*/
thread_id = acpi_os_get_thread_id();
if (thread_id != acpi_gbl_previous_thread_id) {
if (ACPI_LV_THREADS & acpi_dbg_level) {
acpi_os_printf
("\n**** Context Switch from TID %u to TID %u ****\n\n",
(u32)acpi_gbl_previous_thread_id, (u32)thread_id);
}
acpi_gbl_previous_thread_id = thread_id;
acpi_gbl_nesting_level = 0;
}
/*
* Display the module name, current line number, thread ID (if requested),
* current procedure nesting level, and the current procedure name
*/
acpi_os_printf("%9s-%04ld ", module_name, line_number);
#ifdef ACPI_APPLICATION
/*
* For acpi_exec/iASL only, emit the thread ID and nesting level.
* Note: nesting level is really only useful during a single-thread
* execution. Otherwise, multiple threads will keep resetting the
* level.
*/
if (ACPI_LV_THREADS & acpi_dbg_level) {
acpi_os_printf("[%u] ", (u32)thread_id);
}
fill_count = 48 - acpi_gbl_nesting_level -
strlen(acpi_ut_trim_function_name(function_name));
if (fill_count < 0) {
fill_count = 0;
}
acpi_os_printf("[%02ld] %*s",
acpi_gbl_nesting_level, acpi_gbl_nesting_level + 1, " ");
acpi_os_printf("%s%*s: ",
acpi_ut_trim_function_name(function_name), fill_count,
" ");
#else
acpi_os_printf("%-22.22s: ", acpi_ut_trim_function_name(function_name));
#endif
va_start(args, format);
acpi_os_vprintf(format, args);
va_end(args);
}
ACPI_EXPORT_SYMBOL(acpi_debug_print)
/*******************************************************************************
*
* FUNCTION: acpi_debug_print_raw
*
* PARAMETERS: requested_debug_level - Requested debug print level
* line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* format - Printf format field
* ... - Optional printf arguments
*
* RETURN: None
*
* DESCRIPTION: Print message with no headers. Has same interface as
* debug_print so that the same macros can be used.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print_raw(u32 requested_debug_level,
u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const char *format, ...)
{
va_list args;
/* Check if debug output enabled */
if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
return;
}
va_start(args, format);
acpi_os_vprintf(format, args);
va_end(args);
}
ACPI_EXPORT_SYMBOL(acpi_debug_print_raw)
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s\n",
acpi_gbl_function_entry_prefix);
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_trace)
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_ptr
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* pointer - Pointer to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_ptr(u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const void *pointer)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %p\n",
acpi_gbl_function_entry_prefix, pointer);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_str
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* string - Additional string to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_str(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, const char *string)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %s\n",
acpi_gbl_function_entry_prefix, string);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_u32
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* integer - Integer to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_u32(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u32 integer)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %08X\n",
acpi_gbl_function_entry_prefix, integer);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s\n",
acpi_gbl_function_exit_prefix);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_status_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* status - Exit status code
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit status also.
*
******************************************************************************/
void
acpi_ut_status_exit(u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, acpi_status status)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
if (ACPI_SUCCESS(status)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name,
module_name, component_id, "%s %s\n",
acpi_gbl_function_exit_prefix,
acpi_format_exception(status));
} else {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name,
module_name, component_id,
"%s ****Exception****: %s\n",
acpi_gbl_function_exit_prefix,
acpi_format_exception(status));
}
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_value_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* value - Value to be printed with exit msg
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_value_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u64 value)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %8.8X%8.8X\n",
acpi_gbl_function_exit_prefix,
ACPI_FORMAT_UINT64(value));
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_ptr_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* ptr - Pointer to display
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_ptr_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u8 *ptr)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %p\n",
acpi_gbl_function_exit_prefix, ptr);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_str_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* string - String to display
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_str_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, const char *string)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %s\n",
acpi_gbl_function_exit_prefix, string);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_trace_point
*
* PARAMETERS: type - Trace event type
* begin - TRUE if before execution
* aml - Executed AML address
* pathname - Object path
* pointer - Pointer to the related object
*
* RETURN: None
*
* DESCRIPTION: Interpreter execution trace.
*
******************************************************************************/
void
acpi_trace_point(acpi_trace_event_type type, u8 begin, u8 *aml, char *pathname)
{
ACPI_FUNCTION_ENTRY();
acpi_ex_trace_point(type, begin, aml, pathname);
#ifdef ACPI_USE_SYSTEM_TRACER
acpi_os_trace_point(type, begin, aml, pathname);
#endif
}
ACPI_EXPORT_SYMBOL(acpi_trace_point)
#endif
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