From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/acpi/acpica/utexcep.c | 123 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 drivers/acpi/acpica/utexcep.c (limited to 'drivers/acpi/acpica/utexcep.c') diff --git a/drivers/acpi/acpica/utexcep.c b/drivers/acpi/acpica/utexcep.c new file mode 100644 index 000000000..60fbdcde1 --- /dev/null +++ b/drivers/acpi/acpica/utexcep.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/******************************************************************************* + * + * Module Name: utexcep - Exception code support + * + ******************************************************************************/ + +#define EXPORT_ACPI_INTERFACES + +#define ACPI_DEFINE_EXCEPTION_TABLE +#include +#include "accommon.h" + +#define _COMPONENT ACPI_UTILITIES +ACPI_MODULE_NAME("utexcep") + +/******************************************************************************* + * + * FUNCTION: acpi_format_exception + * + * PARAMETERS: status - The acpi_status code to be formatted + * + * RETURN: A string containing the exception text. A valid pointer is + * always returned. + * + * DESCRIPTION: This function translates an ACPI exception into an ASCII + * string. Returns "unknown status" string for invalid codes. + * + ******************************************************************************/ +const char *acpi_format_exception(acpi_status status) +{ + const struct acpi_exception_info *exception; + + ACPI_FUNCTION_ENTRY(); + + exception = acpi_ut_validate_exception(status); + if (!exception) { + + /* Exception code was not recognized */ + + ACPI_ERROR((AE_INFO, + "Unknown exception code: 0x%8.8X", status)); + + return ("UNKNOWN_STATUS_CODE"); + } + + return (exception->name); +} + +ACPI_EXPORT_SYMBOL(acpi_format_exception) + +/******************************************************************************* + * + * FUNCTION: acpi_ut_validate_exception + * + * PARAMETERS: status - The acpi_status code to be formatted + * + * RETURN: A string containing the exception text. NULL if exception is + * not valid. + * + * DESCRIPTION: This function validates and translates an ACPI exception into + * an ASCII string. + * + ******************************************************************************/ +const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status status) +{ + u32 sub_status; + const struct acpi_exception_info *exception = NULL; + + ACPI_FUNCTION_ENTRY(); + + /* + * Status is composed of two parts, a "type" and an actual code + */ + sub_status = (status & ~AE_CODE_MASK); + + switch (status & AE_CODE_MASK) { + case AE_CODE_ENVIRONMENTAL: + + if (sub_status <= AE_CODE_ENV_MAX) { + exception = &acpi_gbl_exception_names_env[sub_status]; + } + break; + + case AE_CODE_PROGRAMMER: + + if (sub_status <= AE_CODE_PGM_MAX) { + exception = &acpi_gbl_exception_names_pgm[sub_status]; + } + break; + + case AE_CODE_ACPI_TABLES: + + if (sub_status <= AE_CODE_TBL_MAX) { + exception = &acpi_gbl_exception_names_tbl[sub_status]; + } + break; + + case AE_CODE_AML: + + if (sub_status <= AE_CODE_AML_MAX) { + exception = &acpi_gbl_exception_names_aml[sub_status]; + } + break; + + case AE_CODE_CONTROL: + + if (sub_status <= AE_CODE_CTRL_MAX) { + exception = &acpi_gbl_exception_names_ctrl[sub_status]; + } + break; + + default: + + break; + } + + if (!exception || !exception->name) { + return (NULL); + } + + return (exception); +} -- cgit v1.2.3