diff options
Diffstat (limited to 'drivers/acpi/acpica/tbprint.c')
| -rw-r--r-- | drivers/acpi/acpica/tbprint.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c new file mode 100644 index 0000000000..58b02e4b25 --- /dev/null +++ b/drivers/acpi/acpica/tbprint.c @@ -0,0 +1,138 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/****************************************************************************** + * + * Module Name: tbprint - Table output utilities + * + * Copyright (C) 2000 - 2023, Intel Corp. + * + *****************************************************************************/ + +#include <acpi/acpi.h> +#include "accommon.h" +#include "actables.h" +#include "acutils.h" + +#define _COMPONENT ACPI_TABLES +ACPI_MODULE_NAME("tbprint") + +/* Local prototypes */ +static void acpi_tb_fix_string(char *string, acpi_size length); + +static void +acpi_tb_cleanup_table_header(struct acpi_table_header *out_header, + struct acpi_table_header *header); + +/******************************************************************************* + * + * FUNCTION: acpi_tb_fix_string + * + * PARAMETERS: string - String to be repaired + * length - Maximum length + * + * RETURN: None + * + * DESCRIPTION: Replace every non-printable or non-ascii byte in the string + * with a question mark '?'. + * + ******************************************************************************/ + +static void acpi_tb_fix_string(char *string, acpi_size length) +{ + + while (length && *string) { + if (!isprint((int)(u8)*string)) { + *string = '?'; + } + + string++; + length--; + } +} + +/******************************************************************************* + * + * FUNCTION: acpi_tb_cleanup_table_header + * + * PARAMETERS: out_header - Where the cleaned header is returned + * header - Input ACPI table header + * + * RETURN: Returns the cleaned header in out_header + * + * DESCRIPTION: Copy the table header and ensure that all "string" fields in + * the header consist of printable characters. + * + ******************************************************************************/ + +static void +acpi_tb_cleanup_table_header(struct acpi_table_header *out_header, + struct acpi_table_header *header) +{ + + memcpy(out_header, header, sizeof(struct acpi_table_header)); + + acpi_tb_fix_string(out_header->signature, ACPI_NAMESEG_SIZE); + acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE); + acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE); + acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAMESEG_SIZE); +} + +/******************************************************************************* + * + * FUNCTION: acpi_tb_print_table_header + * + * PARAMETERS: address - Table physical address + * header - Table header + * + * RETURN: None + * + * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP. + * + ******************************************************************************/ + +void +acpi_tb_print_table_header(acpi_physical_address address, + struct acpi_table_header *header) +{ + struct acpi_table_header local_header; + + if (ACPI_COMPARE_NAMESEG(header->signature, ACPI_SIG_FACS)) { + + /* FACS only has signature and length fields */ + + ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X", + header->signature, ACPI_FORMAT_UINT64(address), + header->length)); + } else if (ACPI_VALIDATE_RSDP_SIG(ACPI_CAST_PTR(struct acpi_table_rsdp, + header)->signature)) { + + /* RSDP has no common fields */ + + memcpy(local_header.oem_id, + ACPI_CAST_PTR(struct acpi_table_rsdp, header)->oem_id, + ACPI_OEM_ID_SIZE); + acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE); + + ACPI_INFO(("RSDP 0x%8.8X%8.8X %06X (v%.2d %-6.6s)", + ACPI_FORMAT_UINT64(address), + (ACPI_CAST_PTR(struct acpi_table_rsdp, header)-> + revision > + 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp, + header)->length : 20, + ACPI_CAST_PTR(struct acpi_table_rsdp, + header)->revision, + local_header.oem_id)); + } else { + /* Standard ACPI table with full common header */ + + acpi_tb_cleanup_table_header(&local_header, header); + + ACPI_INFO(("%-4.4s 0x%8.8X%8.8X" + " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)", + local_header.signature, ACPI_FORMAT_UINT64(address), + local_header.length, local_header.revision, + local_header.oem_id, local_header.oem_table_id, + local_header.oem_revision, + local_header.asl_compiler_id, + local_header.asl_compiler_revision)); + } +} |