drivers/acpi/acpica/tbprint.c

   1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Module Name: tbprint - Table output utilities
   5  *
   6  * Copyright (C) 2000 - 2023, Intel Corp.
   7  *
   8  *****************************************************************************/
   9
  10 #include <acpi/acpi.h>
  11 #include "accommon.h"
  12 #include "actables.h"
  13 #include "acutils.h"
  14
  15 #define _COMPONENT          ACPI_TABLES
  16 ACPI_MODULE_NAME("tbprint")
  17
  18 /* Local prototypes */
  19 static void acpi_tb_fix_string(char *string, acpi_size length);
  20
  21 static void
  22 acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
  23                              struct acpi_table_header *header);
  24
  25 /*******************************************************************************
  26  *
  27  * FUNCTION:    acpi_tb_fix_string
  28  *
  29  * PARAMETERS:  string              - String to be repaired
  30  *              length              - Maximum length
  31  *
  32  * RETURN:      None
  33  *
  34  * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
  35  *              with a question mark '?'.
  36  *
  37  ******************************************************************************/
  38
  39 static void acpi_tb_fix_string(char *string, acpi_size length)
  40 {
  41
  42         while (length && *string) {
  43                 if (!isprint((int)(u8)*string)) {
  44                         *string = '?';
  45                 }
  46
  47                 string++;
  48                 length--;
  49         }
  50 }
  51
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_tb_cleanup_table_header
  55  *
  56  * PARAMETERS:  out_header          - Where the cleaned header is returned
  57  *              header              - Input ACPI table header
  58  *
  59  * RETURN:      Returns the cleaned header in out_header
  60  *
  61  * DESCRIPTION: Copy the table header and ensure that all "string" fields in
  62  *              the header consist of printable characters.
  63  *
  64  ******************************************************************************/
  65
  66 static void
  67 acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
  68                              struct acpi_table_header *header)
  69 {
  70
  71         memcpy(out_header, header, sizeof(struct acpi_table_header));
  72
  73         acpi_tb_fix_string(out_header->signature, ACPI_NAMESEG_SIZE);
  74         acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
  75         acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
  76         acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAMESEG_SIZE);
  77 }
  78
  79 /*******************************************************************************
  80  *
  81  * FUNCTION:    acpi_tb_print_table_header
  82  *
  83  * PARAMETERS:  address             - Table physical address
  84  *              header              - Table header
  85  *
  86  * RETURN:      None
  87  *
  88  * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
  89  *
  90  ******************************************************************************/
  91
  92 void
  93 acpi_tb_print_table_header(acpi_physical_address address,
  94                            struct acpi_table_header *header)
  95 {
  96         struct acpi_table_header local_header;
  97
  98         if (ACPI_COMPARE_NAMESEG(header->signature, ACPI_SIG_FACS)) {
  99
 100                 /* FACS only has signature and length fields */
 101
 102                 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X",
 103                            header->signature, ACPI_FORMAT_UINT64(address),
 104                            header->length));
 105         } else if (ACPI_VALIDATE_RSDP_SIG(ACPI_CAST_PTR(struct acpi_table_rsdp,
 106                                                         header)->signature)) {
 107
 108                 /* RSDP has no common fields */
 109
 110                 memcpy(local_header.oem_id,
 111                        ACPI_CAST_PTR(struct acpi_table_rsdp, header)->oem_id,
 112                        ACPI_OEM_ID_SIZE);
 113                 acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
 114
 115                 ACPI_INFO(("RSDP 0x%8.8X%8.8X %06X (v%.2d %-6.6s)",
 116                            ACPI_FORMAT_UINT64(address),
 117                            (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
 118                             revision >
 119                             0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
 120                                                header)->length : 20,
 121                            ACPI_CAST_PTR(struct acpi_table_rsdp,
 122                                          header)->revision,
 123                            local_header.oem_id));
 124         } else {
 125                 /* Standard ACPI table with full common header */
 126
 127                 acpi_tb_cleanup_table_header(&local_header, header);
 128
 129                 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X"
 130                            " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)",
 131                            local_header.signature, ACPI_FORMAT_UINT64(address),
 132                            local_header.length, local_header.revision,
 133                            local_header.oem_id, local_header.oem_table_id,
 134                            local_header.oem_revision,
 135                            local_header.asl_compiler_id,
 136                            local_header.asl_compiler_revision));
 137         }
 138 }