forked from Minki/linux
f9f4601f33
The use of the CPU stack in the debug version of the subsystem has been considerably reduced. Previously, a debug structure was declared in every function that used the debug macros. This structure has been removed in favor of declaring the individual elements as parameters to the debug functions. This reduces the cumulative stack use during nested execution of ACPI function calls at the cost of a small increase in the code size of the debug version of the subsystem. With assistance from Alexey Starikovskiy and Len Brown. Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent headers to define a macro that will return the current function name at runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the compiler-dependent header, the function name is saved on the CPU stack (one pointer per function.) This mechanism is used because apparently there exists no standard ANSI-C defined macro that that returns the function name. Alexey Starikovskiy redesigned and reimplemented the "Owner ID" mechanism used to track namespace objects created/deleted by ACPI tables and control method execution. A bitmap is now used to allocate and free the IDs, thus solving the wraparound problem present in the previous implementation. The size of the namespace node descriptor was reduced by 2 bytes as a result. Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield flag definitions within the headers for the predefined ACPI tables. These have been replaced by UINT8_BIT in order to increase the code portability of the subsystem. If the use of UINT8 remains a problem, we may be forced to eliminate bitfields entirely because of a lack of portability. Alexey Starikovksiy enhanced the performance of acpi_ut_update_object_reference. This is a frequently used function and this improvement increases the performance of the entire subsystem. Alexey Starikovskiy fixed several possible memory leaks and the inverse - premature object deletion. Signed-off-by: Len Brown <len.brown@intel.com>
640 lines
18 KiB
C
640 lines
18 KiB
C
/******************************************************************************
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*
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* Module Name: utdebug - Debug print routines
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <linux/module.h>
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#include <acpi/acpi.h>
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("utdebug")
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#ifdef ACPI_DEBUG_OUTPUT
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static u32 acpi_gbl_prev_thread_id = 0xFFFFFFFF;
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static char *acpi_gbl_fn_entry_str = "----Entry";
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static char *acpi_gbl_fn_exit_str = "----Exit-";
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_init_stack_ptr_trace
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Save the current CPU stack pointer at subsystem startup
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*
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******************************************************************************/
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void
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acpi_ut_init_stack_ptr_trace (
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void)
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{
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u32 current_sp;
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acpi_gbl_entry_stack_pointer = ACPI_PTR_DIFF (¤t_sp, NULL);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_track_stack_ptr
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Save the current CPU stack pointer
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*
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******************************************************************************/
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void
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acpi_ut_track_stack_ptr (
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void)
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{
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acpi_size current_sp;
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current_sp = ACPI_PTR_DIFF (¤t_sp, NULL);
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if (current_sp < acpi_gbl_lowest_stack_pointer) {
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acpi_gbl_lowest_stack_pointer = current_sp;
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}
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if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
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acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_debug_print
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*
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* PARAMETERS: requested_debug_level - Requested debug print level
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* line_number - Caller's line number (for error output)
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Format - Printf format field
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* ... - Optional printf arguments
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*
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* RETURN: None
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*
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* DESCRIPTION: Print error message with prefix consisting of the module name,
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* line number, and component ID.
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*
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******************************************************************************/
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void ACPI_INTERNAL_VAR_XFACE
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acpi_ut_debug_print (
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u32 requested_debug_level,
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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char *format,
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...)
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{
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u32 thread_id;
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va_list args;
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/*
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* Stay silent if the debug level or component ID is disabled
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*/
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if (!(requested_debug_level & acpi_dbg_level) ||
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!(component_id & acpi_dbg_layer)) {
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return;
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}
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/*
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* Thread tracking and context switch notification
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*/
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thread_id = acpi_os_get_thread_id ();
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if (thread_id != acpi_gbl_prev_thread_id) {
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if (ACPI_LV_THREADS & acpi_dbg_level) {
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acpi_os_printf (
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"\n**** Context Switch from TID %X to TID %X ****\n\n",
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acpi_gbl_prev_thread_id, thread_id);
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}
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acpi_gbl_prev_thread_id = thread_id;
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}
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/*
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* Display the module name, current line number, thread ID (if requested),
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* current procedure nesting level, and the current procedure name
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*/
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acpi_os_printf ("%8s-%04ld ", module_name, line_number);
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if (ACPI_LV_THREADS & acpi_dbg_level) {
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acpi_os_printf ("[%04lX] ", thread_id);
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}
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acpi_os_printf ("[%02ld] %-22.22s: ",
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acpi_gbl_nesting_level, function_name);
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va_start (args, format);
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acpi_os_vprintf (format, args);
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}
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EXPORT_SYMBOL(acpi_ut_debug_print);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_debug_print_raw
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*
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* PARAMETERS: requested_debug_level - Requested debug print level
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* line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Format - Printf format field
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* ... - Optional printf arguments
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*
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* RETURN: None
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*
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* DESCRIPTION: Print message with no headers. Has same interface as
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* debug_print so that the same macros can be used.
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*
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******************************************************************************/
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void ACPI_INTERNAL_VAR_XFACE
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acpi_ut_debug_print_raw (
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u32 requested_debug_level,
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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char *format,
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...)
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{
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va_list args;
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if (!(requested_debug_level & acpi_dbg_level) ||
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!(component_id & acpi_dbg_layer)) {
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return;
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}
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va_start (args, format);
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acpi_os_vprintf (format, args);
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}
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EXPORT_SYMBOL(acpi_ut_debug_print_raw);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_trace
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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*
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* RETURN: None
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*
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* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level
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*
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******************************************************************************/
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void
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acpi_ut_trace (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id)
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{
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acpi_gbl_nesting_level++;
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acpi_ut_track_stack_ptr ();
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s\n", acpi_gbl_fn_entry_str);
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}
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EXPORT_SYMBOL(acpi_ut_trace);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_trace_ptr
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Pointer - Pointer to display
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*
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* RETURN: None
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*
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* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level
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*
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******************************************************************************/
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void
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acpi_ut_trace_ptr (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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void *pointer)
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{
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acpi_gbl_nesting_level++;
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acpi_ut_track_stack_ptr ();
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %p\n", acpi_gbl_fn_entry_str, pointer);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_trace_str
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* String - Additional string to display
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*
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* RETURN: None
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*
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* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level
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*
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******************************************************************************/
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void
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acpi_ut_trace_str (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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char *string)
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{
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acpi_gbl_nesting_level++;
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acpi_ut_track_stack_ptr ();
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %s\n", acpi_gbl_fn_entry_str, string);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_trace_u32
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Integer - Integer to display
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*
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* RETURN: None
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*
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* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level
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*
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******************************************************************************/
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void
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acpi_ut_trace_u32 (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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u32 integer)
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{
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acpi_gbl_nesting_level++;
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acpi_ut_track_stack_ptr ();
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %08X\n", acpi_gbl_fn_entry_str, integer);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_exit
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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*
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* RETURN: None
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*
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* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level
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*
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******************************************************************************/
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void
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acpi_ut_exit (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id)
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{
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s\n", acpi_gbl_fn_exit_str);
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acpi_gbl_nesting_level--;
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}
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EXPORT_SYMBOL(acpi_ut_exit);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_status_exit
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Status - Exit status code
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*
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* RETURN: None
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*
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* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level. Prints exit status also.
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*
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******************************************************************************/
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void
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acpi_ut_status_exit (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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acpi_status status)
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{
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if (ACPI_SUCCESS (status)) {
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %s\n", acpi_gbl_fn_exit_str,
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acpi_format_exception (status));
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}
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else {
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s ****Exception****: %s\n", acpi_gbl_fn_exit_str,
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acpi_format_exception (status));
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}
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acpi_gbl_nesting_level--;
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}
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EXPORT_SYMBOL(acpi_ut_status_exit);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_value_exit
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Value - Value to be printed with exit msg
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*
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* RETURN: None
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*
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* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level. Prints exit value also.
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*
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******************************************************************************/
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void
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acpi_ut_value_exit (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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acpi_integer value)
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{
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %8.8X%8.8X\n", acpi_gbl_fn_exit_str,
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ACPI_FORMAT_UINT64 (value));
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acpi_gbl_nesting_level--;
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}
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EXPORT_SYMBOL(acpi_ut_value_exit);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_ptr_exit
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*
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* PARAMETERS: line_number - Caller's line number
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* function_name - Caller's procedure name
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* module_name - Caller's module name
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* component_id - Caller's component ID
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* Ptr - Pointer to display
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*
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* RETURN: None
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*
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* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
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* set in debug_level. Prints exit value also.
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*
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******************************************************************************/
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void
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acpi_ut_ptr_exit (
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u32 line_number,
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char *function_name,
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char *module_name,
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u32 component_id,
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u8 *ptr)
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{
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acpi_ut_debug_print (ACPI_LV_FUNCTIONS,
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line_number, function_name, module_name, component_id,
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"%s %p\n", acpi_gbl_fn_exit_str, ptr);
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acpi_gbl_nesting_level--;
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}
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#endif
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_dump_buffer
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*
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* PARAMETERS: Buffer - Buffer to dump
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* Count - Amount to dump, in bytes
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* Display - BYTE, WORD, DWORD, or QWORD display
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* component_iD - Caller's component ID
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*
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* RETURN: None
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*
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* DESCRIPTION: Generic dump buffer in both hex and ascii.
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*
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******************************************************************************/
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void
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acpi_ut_dump_buffer (
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u8 *buffer,
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u32 count,
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u32 display,
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u32 component_id)
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{
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acpi_native_uint i = 0;
|
|
acpi_native_uint j;
|
|
u32 temp32;
|
|
u8 buf_char;
|
|
|
|
|
|
/* Only dump the buffer if tracing is enabled */
|
|
|
|
if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
|
|
(component_id & acpi_dbg_layer))) {
|
|
return;
|
|
}
|
|
|
|
if ((count < 4) || (count & 0x01)) {
|
|
display = DB_BYTE_DISPLAY;
|
|
}
|
|
|
|
/* Nasty little dump buffer routine! */
|
|
|
|
while (i < count) {
|
|
/* Print current offset */
|
|
|
|
acpi_os_printf ("%6.4X: ", (u32) i);
|
|
|
|
/* Print 16 hex chars */
|
|
|
|
for (j = 0; j < 16;) {
|
|
if (i + j >= count) {
|
|
/* Dump fill spaces */
|
|
|
|
acpi_os_printf ("%*s", ((display * 2) + 1), " ");
|
|
j += (acpi_native_uint) display;
|
|
continue;
|
|
}
|
|
|
|
switch (display) {
|
|
default: /* Default is BYTE display */
|
|
|
|
acpi_os_printf ("%02X ", buffer[i + j]);
|
|
break;
|
|
|
|
|
|
case DB_WORD_DISPLAY:
|
|
|
|
ACPI_MOVE_16_TO_32 (&temp32, &buffer[i + j]);
|
|
acpi_os_printf ("%04X ", temp32);
|
|
break;
|
|
|
|
|
|
case DB_DWORD_DISPLAY:
|
|
|
|
ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j]);
|
|
acpi_os_printf ("%08X ", temp32);
|
|
break;
|
|
|
|
|
|
case DB_QWORD_DISPLAY:
|
|
|
|
ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j]);
|
|
acpi_os_printf ("%08X", temp32);
|
|
|
|
ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j + 4]);
|
|
acpi_os_printf ("%08X ", temp32);
|
|
break;
|
|
}
|
|
|
|
j += (acpi_native_uint) display;
|
|
}
|
|
|
|
/*
|
|
* Print the ASCII equivalent characters
|
|
* But watch out for the bad unprintable ones...
|
|
*/
|
|
acpi_os_printf (" ");
|
|
for (j = 0; j < 16; j++) {
|
|
if (i + j >= count) {
|
|
acpi_os_printf ("\n");
|
|
return;
|
|
}
|
|
|
|
buf_char = buffer[i + j];
|
|
if ((buf_char > 0x1F && buf_char < 0x2E) ||
|
|
(buf_char > 0x2F && buf_char < 0x61) ||
|
|
(buf_char > 0x60 && buf_char < 0x7F)) {
|
|
acpi_os_printf ("%c", buf_char);
|
|
}
|
|
else {
|
|
acpi_os_printf (".");
|
|
}
|
|
}
|
|
|
|
/* Done with that line. */
|
|
|
|
acpi_os_printf ("\n");
|
|
i += 16;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|