kernel/drivers/acpi/acpica/dbfileio.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: dbfileio - Debugger file I/O commands. These can't usually
   4  *              be used when running the debugger in Ring 0 (Kernel mode)
   5  *
   6  ******************************************************************************/
   7
   8 /*
   9  * Copyright (C) 2000 - 2015, Intel Corp.
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification.
  18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  19  *    substantially similar to the "NO WARRANTY" disclaimer below
  20  *    ("Disclaimer") and any redistribution must be conditioned upon
  21  *    including a substantially similar Disclaimer requirement for further
  22  *    binary redistribution.
  23  * 3. Neither the names of the above-listed copyright holders nor the names
  24  *    of any contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * Alternatively, this software may be distributed under the terms of the
  28  * GNU General Public License ("GPL") version 2 as published by the Free
  29  * Software Foundation.
  30  *
  31  * NO WARRANTY
  32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  42  * POSSIBILITY OF SUCH DAMAGES.
  43  */
  44
  45 #include <acpi/acpi.h>
  46 #include "accommon.h"
  47 #include "acdebug.h"
  48 #include "actables.h"
  49
  50 #define _COMPONENT          ACPI_CA_DEBUGGER
  51 ACPI_MODULE_NAME("dbfileio")
  52
  53 #ifdef ACPI_DEBUGGER
  54 /*******************************************************************************
  55  *
  56  * FUNCTION:    acpi_db_close_debug_file
  57  *
  58  * PARAMETERS:  None
  59  *
  60  * RETURN:      None
  61  *
  62  * DESCRIPTION: If open, close the current debug output file
  63  *
  64  ******************************************************************************/
  65 void acpi_db_close_debug_file(void)
  66 {
  67
  68 #ifdef ACPI_APPLICATION
  69
  70         if (acpi_gbl_debug_file) {
  71                 fclose(acpi_gbl_debug_file);
  72                 acpi_gbl_debug_file = NULL;
  73                 acpi_gbl_db_output_to_file = FALSE;
  74                 acpi_os_printf("Debug output file %s closed\n",
  75                                acpi_gbl_db_debug_filename);
  76         }
  77 #endif
  78 }
  79
  80 /*******************************************************************************
  81  *
  82  * FUNCTION:    acpi_db_open_debug_file
  83  *
  84  * PARAMETERS:  name                - Filename to open
  85  *
  86  * RETURN:      None
  87  *
  88  * DESCRIPTION: Open a file where debug output will be directed.
  89  *
  90  ******************************************************************************/
  91
  92 void acpi_db_open_debug_file(char *name)
  93 {
  94
  95 #ifdef ACPI_APPLICATION
  96
  97         acpi_db_close_debug_file();
  98         acpi_gbl_debug_file = fopen(name, "w+");
  99         if (!acpi_gbl_debug_file) {
 100                 acpi_os_printf("Could not open debug file %s\n", name);
 101                 return;
 102         }
 103
 104         acpi_os_printf("Debug output file %s opened\n", name);
 105         strncpy(acpi_gbl_db_debug_filename, name,
 106                 sizeof(acpi_gbl_db_debug_filename));
 107         acpi_gbl_db_output_to_file = TRUE;
 108
 109 #endif
 110 }
 111 #endif
 112
 113 #ifdef ACPI_APPLICATION
 114 #include "acapps.h"
 115
 116 /*******************************************************************************
 117  *
 118  * FUNCTION:    ae_local_load_table
 119  *
 120  * PARAMETERS:  table           - pointer to a buffer containing the entire
 121  *                                table to be loaded
 122  *
 123  * RETURN:      Status
 124  *
 125  * DESCRIPTION: This function is called to load a table from the caller's
 126  *              buffer. The buffer must contain an entire ACPI Table including
 127  *              a valid header. The header fields will be verified, and if it
 128  *              is determined that the table is invalid, the call will fail.
 129  *
 130  ******************************************************************************/
 131
 132 static acpi_status ae_local_load_table(struct acpi_table_header *table)
 133 {
 134         acpi_status status = AE_OK;
 135
 136         ACPI_FUNCTION_TRACE(ae_local_load_table);
 137
 138 #if 0
 139 /*    struct acpi_table_desc          table_info; */
 140
 141         if (!table) {
 142                 return_ACPI_STATUS(AE_BAD_PARAMETER);
 143         }
 144
 145         table_info.pointer = table;
 146         status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL);
 147         if (ACPI_FAILURE(status)) {
 148                 return_ACPI_STATUS(status);
 149         }
 150
 151         /* Install the new table into the local data structures */
 152
 153         status = acpi_tb_init_table_descriptor(&table_info);
 154         if (ACPI_FAILURE(status)) {
 155                 if (status == AE_ALREADY_EXISTS) {
 156
 157                         /* Table already exists, no error */
 158
 159                         status = AE_OK;
 160                 }
 161
 162                 /* Free table allocated by acpi_tb_get_table */
 163
 164                 acpi_tb_delete_single_table(&table_info);
 165                 return_ACPI_STATUS(status);
 166         }
 167 #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
 168
 169         status =
 170             acpi_ns_load_table(table_info.installed_desc, acpi_gbl_root_node);
 171         if (ACPI_FAILURE(status)) {
 172
 173                 /* Uninstall table and free the buffer */
 174
 175                 acpi_tb_delete_tables_by_type(ACPI_TABLE_ID_DSDT);
 176                 return_ACPI_STATUS(status);
 177         }
 178 #endif
 179 #endif
 180
 181         return_ACPI_STATUS(status);
 182 }
 183 #endif
 184
 185 /*******************************************************************************
 186  *
 187  * FUNCTION:    acpi_db_get_table_from_file
 188  *
 189  * PARAMETERS:  filename        - File where table is located
 190  *              return_table    - Where a pointer to the table is returned
 191  *
 192  * RETURN:      Status
 193  *
 194  * DESCRIPTION: Load an ACPI table from a file
 195  *
 196  ******************************************************************************/
 197
 198 acpi_status
 199 acpi_db_get_table_from_file(char *filename,
 200                             struct acpi_table_header **return_table,
 201                             u8 must_be_aml_file)
 202 {
 203 #ifdef ACPI_APPLICATION
 204         acpi_status status;
 205         struct acpi_table_header *table;
 206         u8 is_aml_table = TRUE;
 207
 208         status = acpi_ut_read_table_from_file(filename, &table);
 209         if (ACPI_FAILURE(status)) {
 210                 return (status);
 211         }
 212
 213         if (must_be_aml_file) {
 214                 is_aml_table = acpi_ut_is_aml_table(table);
 215                 if (!is_aml_table) {
 216                         ACPI_EXCEPTION((AE_INFO, AE_OK,
 217                                         "Input for -e is not an AML table: "
 218                                         "\"%4.4s\" (must be DSDT/SSDT)",
 219                                         table->signature));
 220                         return (AE_TYPE);
 221                 }
 222         }
 223
 224         if (is_aml_table) {
 225
 226                 /* Attempt to recognize and install the table */
 227
 228                 status = ae_local_load_table(table);
 229                 if (ACPI_FAILURE(status)) {
 230                         if (status == AE_ALREADY_EXISTS) {
 231                                 acpi_os_printf
 232                                     ("Table %4.4s is already installed\n",
 233                                      table->signature);
 234                         } else {
 235                                 acpi_os_printf("Could not install table, %s\n",
 236                                                acpi_format_exception(status));
 237                         }
 238
 239                         return (status);
 240                 }
 241
 242                 acpi_tb_print_table_header(0, table);
 243
 244                 fprintf(stderr,
 245                         "Acpi table [%4.4s] successfully installed and loaded\n",
 246                         table->signature);
 247         }
 248
 249         acpi_gbl_acpi_hardware_present = FALSE;
 250         if (return_table) {
 251                 *return_table = table;
 252         }
 253
 254 #endif                          /* ACPI_APPLICATION */
 255         return (AE_OK);
 256 }