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kernel/linux-rt-4.4.41/drivers/acpi/acpica/dbfileio.c 7.25 KB
5113f6f70   김현기   kernel add
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  /*******************************************************************************
   *
   * Module Name: dbfileio - Debugger file I/O commands. These can't usually
   *              be used when running the debugger in Ring 0 (Kernel mode)
   *
   ******************************************************************************/
  
  /*
   * Copyright (C) 2000 - 2015, 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 "acdebug.h"
  #include "actables.h"
  
  #define _COMPONENT          ACPI_CA_DEBUGGER
  ACPI_MODULE_NAME("dbfileio")
  
  #ifdef ACPI_DEBUGGER
  /*******************************************************************************
   *
   * FUNCTION:    acpi_db_close_debug_file
   *
   * PARAMETERS:  None
   *
   * RETURN:      None
   *
   * DESCRIPTION: If open, close the current debug output file
   *
   ******************************************************************************/
  void acpi_db_close_debug_file(void)
  {
  
  #ifdef ACPI_APPLICATION
  
  	if (acpi_gbl_debug_file) {
  		fclose(acpi_gbl_debug_file);
  		acpi_gbl_debug_file = NULL;
  		acpi_gbl_db_output_to_file = FALSE;
  		acpi_os_printf("Debug output file %s closed
  ",
  			       acpi_gbl_db_debug_filename);
  	}
  #endif
  }
  
  /*******************************************************************************
   *
   * FUNCTION:    acpi_db_open_debug_file
   *
   * PARAMETERS:  name                - Filename to open
   *
   * RETURN:      None
   *
   * DESCRIPTION: Open a file where debug output will be directed.
   *
   ******************************************************************************/
  
  void acpi_db_open_debug_file(char *name)
  {
  
  #ifdef ACPI_APPLICATION
  
  	acpi_db_close_debug_file();
  	acpi_gbl_debug_file = fopen(name, "w+");
  	if (!acpi_gbl_debug_file) {
  		acpi_os_printf("Could not open debug file %s
  ", name);
  		return;
  	}
  
  	acpi_os_printf("Debug output file %s opened
  ", name);
  	strncpy(acpi_gbl_db_debug_filename, name,
  		sizeof(acpi_gbl_db_debug_filename));
  	acpi_gbl_db_output_to_file = TRUE;
  
  #endif
  }
  #endif
  
  #ifdef ACPI_APPLICATION
  #include "acapps.h"
  
  /*******************************************************************************
   *
   * FUNCTION:    ae_local_load_table
   *
   * PARAMETERS:  table           - pointer to a buffer containing the entire
   *                                table to be loaded
   *
   * RETURN:      Status
   *
   * DESCRIPTION: This function is called to load a table from the caller's
   *              buffer. The buffer must contain an entire ACPI Table including
   *              a valid header. The header fields will be verified, and if it
   *              is determined that the table is invalid, the call will fail.
   *
   ******************************************************************************/
  
  static acpi_status ae_local_load_table(struct acpi_table_header *table)
  {
  	acpi_status status = AE_OK;
  
  	ACPI_FUNCTION_TRACE(ae_local_load_table);
  
  #if 0
  /*    struct acpi_table_desc          table_info; */
  
  	if (!table) {
  		return_ACPI_STATUS(AE_BAD_PARAMETER);
  	}
  
  	table_info.pointer = table;
  	status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL);
  	if (ACPI_FAILURE(status)) {
  		return_ACPI_STATUS(status);
  	}
  
  	/* Install the new table into the local data structures */
  
  	status = acpi_tb_init_table_descriptor(&table_info);
  	if (ACPI_FAILURE(status)) {
  		if (status == AE_ALREADY_EXISTS) {
  
  			/* Table already exists, no error */
  
  			status = AE_OK;
  		}
  
  		/* Free table allocated by acpi_tb_get_table */
  
  		acpi_tb_delete_single_table(&table_info);
  		return_ACPI_STATUS(status);
  	}
  #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
  
  	status =
  	    acpi_ns_load_table(table_info.installed_desc, acpi_gbl_root_node);
  	if (ACPI_FAILURE(status)) {
  
  		/* Uninstall table and free the buffer */
  
  		acpi_tb_delete_tables_by_type(ACPI_TABLE_ID_DSDT);
  		return_ACPI_STATUS(status);
  	}
  #endif
  #endif
  
  	return_ACPI_STATUS(status);
  }
  #endif
  
  /*******************************************************************************
   *
   * FUNCTION:    acpi_db_get_table_from_file
   *
   * PARAMETERS:  filename        - File where table is located
   *              return_table    - Where a pointer to the table is returned
   *
   * RETURN:      Status
   *
   * DESCRIPTION: Load an ACPI table from a file
   *
   ******************************************************************************/
  
  acpi_status
  acpi_db_get_table_from_file(char *filename,
  			    struct acpi_table_header **return_table,
  			    u8 must_be_aml_file)
  {
  #ifdef ACPI_APPLICATION
  	acpi_status status;
  	struct acpi_table_header *table;
  	u8 is_aml_table = TRUE;
  
  	status = acpi_ut_read_table_from_file(filename, &table);
  	if (ACPI_FAILURE(status)) {
  		return (status);
  	}
  
  	if (must_be_aml_file) {
  		is_aml_table = acpi_ut_is_aml_table(table);
  		if (!is_aml_table) {
  			ACPI_EXCEPTION((AE_INFO, AE_OK,
  					"Input for -e is not an AML table: "
  					"\"%4.4s\" (must be DSDT/SSDT)",
  					table->signature));
  			return (AE_TYPE);
  		}
  	}
  
  	if (is_aml_table) {
  
  		/* Attempt to recognize and install the table */
  
  		status = ae_local_load_table(table);
  		if (ACPI_FAILURE(status)) {
  			if (status == AE_ALREADY_EXISTS) {
  				acpi_os_printf
  				    ("Table %4.4s is already installed
  ",
  				     table->signature);
  			} else {
  				acpi_os_printf("Could not install table, %s
  ",
  					       acpi_format_exception(status));
  			}
  
  			return (status);
  		}
  
  		acpi_tb_print_table_header(0, table);
  
  		fprintf(stderr,
  			"Acpi table [%4.4s] successfully installed and loaded
  ",
  			table->signature);
  	}
  
  	acpi_gbl_acpi_hardware_present = FALSE;
  	if (return_table) {
  		*return_table = table;
  	}
  
  #endif				/* ACPI_APPLICATION */
  	return (AE_OK);
  }