cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/exdebug.c

/******************************************************************************
 *
 * Module Name: exdebug - Support for stores to the AML Debug Object
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2017, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"


#define _COMPONENT          ACPI_EXECUTER
ACPI_MODULE_NAME("exdebug")

#ifndef ACPI_NO_ERROR_MESSAGES
/*******************************************************************************
 *
 * FUNCTION:    acpi_ex_do_debug_object
 *
 * PARAMETERS:  source_desc         - Object to be output to "Debug Object"
 *              level               - Indentation level (used for packages)
 *              index               - Current package element, zero if not pkg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Handles stores to the AML Debug Object. For example:
 *              Store(INT1, Debug)
 *
 * This function is not compiled if ACPI_NO_ERROR_MESSAGES is set.
 *
 * This function is only enabled if acpi_gbl_enable_aml_debug_object is set, or
 * if ACPI_LV_DEBUG_OBJECT is set in the acpi_dbg_level. Thus, in the normal
 * operational case, stores to the debug object are ignored but can be easily
 * enabled if necessary.
 *
 ******************************************************************************/

void acpi_ex_do_debug_object(union acpi_operand_object *source_desc, u32 level, u32 index) { u32 i; u32 timer; union acpi_operand_object *object_desc; u32 value; ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc); /* Output must be enabled via the debug_object global or the dbg_level */ if (!acpi_gbl_enable_aml_debug_object && !(acpi_dbg_level & ACPI_LV_DEBUG_OBJECT)) { return_VOID; } /* Null string or newline -- don't emit the line header */ if (source_desc && (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) && (source_desc->common.type == ACPI_TYPE_STRING)) { if ((source_desc->string.length == 0) || ((source_desc->string.length == 1) && (*source_desc->string.pointer == '\n'))) { acpi_os_printf("\n"); return_VOID; } } /* * Print line header as long as we are not in the middle of an * object display */ if (!((level > 0) && index == 0)) { if (acpi_gbl_display_debug_timer) { /* * We will emit the current timer value (in microseconds) with each * debug output. Only need the lower 26 bits. This allows for 67 * million microseconds or 67 seconds before rollover. * * Convert 100 nanosecond units to microseconds */ timer = ((u32)acpi_os_get_timer() / 10); timer &= 0x03FFFFFF; acpi_os_printf("[ACPI Debug T=0x%8.8X] %*s", timer, level, " "); } else { acpi_os_printf("[ACPI Debug] %*s", level, " "); } } /* Display the index for package output only */ if (index > 0) { acpi_os_printf("(%.2u) ", index - 1); } if (!source_desc) { acpi_os_printf("[Null Object]\n"); return_VOID; } if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) { /* No object type prefix needed for integers and strings */ if ((source_desc->common.type != ACPI_TYPE_INTEGER) && (source_desc->common.type != ACPI_TYPE_STRING)) { acpi_os_printf("%s ", acpi_ut_get_object_type_name (source_desc)); } if (!acpi_ut_valid_internal_object(source_desc)) { acpi_os_printf("%p, Invalid Internal Object!\n", source_desc); return_VOID; } } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_NAMED) { acpi_os_printf("%s (Node %p)\n", acpi_ut_get_type_name(((struct acpi_namespace_node *) source_desc)->type), source_desc); return_VOID; } else { return_VOID; } /* source_desc is of type ACPI_DESC_TYPE_OPERAND */ switch (source_desc->common.type) { case ACPI_TYPE_INTEGER: /* Output correct integer width */ if (acpi_gbl_integer_byte_width == 4) { acpi_os_printf("0x%8.8X\n", (u32)source_desc->integer.value); } else { acpi_os_printf("0x%8.8X%8.8X\n", ACPI_FORMAT_UINT64(source_desc->integer. value)); } break; case ACPI_TYPE_BUFFER: acpi_os_printf("[0x%.2X]\n", (u32)source_desc->buffer.length); acpi_ut_dump_buffer(source_desc->buffer.pointer, (source_desc->buffer.length < 256) ? source_desc->buffer.length : 256, DB_BYTE_DISPLAY, 0); break; case ACPI_TYPE_STRING: acpi_os_printf("\"%s\"\n", source_desc->string.pointer); break; case ACPI_TYPE_PACKAGE: acpi_os_printf("(Contains 0x%.2X Elements):\n", source_desc->package.count); /* Output the entire contents of the package */ for (i = 0; i < source_desc->package.count; i++) { acpi_ex_do_debug_object(source_desc->package. elements[i], level + 4, i + 1); } break; case ACPI_TYPE_LOCAL_REFERENCE: acpi_os_printf("[%s] ", acpi_ut_get_reference_name(source_desc)); /* Decode the reference */ switch (source_desc->reference.class) { case ACPI_REFCLASS_INDEX: acpi_os_printf("0x%X\n", source_desc->reference.value); break; case ACPI_REFCLASS_TABLE: /* Case for ddb_handle */ acpi_os_printf("Table Index 0x%X\n", source_desc->reference.value); return_VOID; default: break; } acpi_os_printf(" "); /* Check for valid node first, then valid object */ if (source_desc->reference.node) { if (ACPI_GET_DESCRIPTOR_TYPE (source_desc->reference.node) != ACPI_DESC_TYPE_NAMED) { acpi_os_printf (" %p - Not a valid namespace node\n", source_desc->reference.node); } else { acpi_os_printf("Node %p [%4.4s] ", source_desc->reference.node, (source_desc->reference.node)-> name.ascii); switch ((source_desc->reference.node)->type) { /* These types have no attached object */ case ACPI_TYPE_DEVICE: acpi_os_printf("Device\n"); break; case ACPI_TYPE_THERMAL: acpi_os_printf("Thermal Zone\n"); break; default: acpi_ex_do_debug_object((source_desc-> reference. node)->object, level + 4, 0); break; } } } else if (source_desc->reference.object) { if (ACPI_GET_DESCRIPTOR_TYPE (source_desc->reference.object) == ACPI_DESC_TYPE_NAMED) { /* Reference object is a namespace node */ acpi_ex_do_debug_object(ACPI_CAST_PTR (union acpi_operand_object, source_desc->reference. object), level + 4, 0); } else { object_desc = source_desc->reference.object; value = source_desc->reference.value; switch (object_desc->common.type) { case ACPI_TYPE_BUFFER: acpi_os_printf("Buffer[%u] = 0x%2.2X\n", value, *source_desc->reference. index_pointer); break; case ACPI_TYPE_STRING: acpi_os_printf ("String[%u] = \"%c\" (0x%2.2X)\n", value, *source_desc->reference. index_pointer, *source_desc->reference. index_pointer); break; case ACPI_TYPE_PACKAGE: acpi_os_printf("Package[%u] = ", value); if (!(*source_desc->reference.where)) { acpi_os_printf ("[Uninitialized Package Element]\n"); } else { acpi_ex_do_debug_object (*source_desc->reference. where, level + 4, 0); } break; default: acpi_os_printf ("Unknown Reference object type %X\n", object_desc->common.type); break; } } } break; default: acpi_os_printf("(Descriptor %p)\n", source_desc); break; } ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n")); return_VOID; }

Contributors

PersonTokensPropCommitsCommitProp
Lin Ming60568.59%112.50%
Robert Moore27731.41%787.50%
Total882100.00%8100.00%

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Lin Ming62869.24%110.00%
Robert Moore27930.76%990.00%
Total907100.00%10100.00%
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