path: root/include/acpi/actbl1.h

/******************************************************************************
 *
 * Name: actbl1.h - Additional ACPI table definitions
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2016, 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
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 * 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.
 */

#ifndef __ACTBL1_H__
#define __ACTBL1_H__

/*******************************************************************************
 *
 * Additional ACPI Tables (1)
 *
 * These tables are not consumed directly by the ACPICA subsystem, but are
 * included here to support device drivers and the AML disassembler.
 *
 * The tables in this file are fully defined within the ACPI specification.
 *
 ******************************************************************************/

/*
 * Values for description table header signatures for tables defined in this
 * file. Useful because they make it more difficult to inadvertently type in
 * the wrong signature.
 */
#define ACPI_SIG_BERT           "BERT"	/* Boot Error Record Table */
#define ACPI_SIG_CPEP           "CPEP"	/* Corrected Platform Error Polling table */
#define ACPI_SIG_ECDT           "ECDT"	/* Embedded Controller Boot Resources Table */
#define ACPI_SIG_EINJ           "EINJ"	/* Error Injection table */
#define ACPI_SIG_ERST           "ERST"	/* Error Record Serialization Table */
#define ACPI_SIG_HEST           "HEST"	/* Hardware Error Source Table */
#define ACPI_SIG_MADT           "APIC"	/* Multiple APIC Description Table */
#define ACPI_SIG_MSCT           "MSCT"	/* Maximum System Characteristics Table */
#define ACPI_SIG_SBST           "SBST"	/* Smart Battery Specification Table */
#define ACPI_SIG_SLIT           "SLIT"	/* System Locality Distance Information Table */
#define ACPI_SIG_SRAT           "SRAT"	/* System Resource Affinity Table */
#define ACPI_SIG_NFIT           "NFIT"	/* NVDIMM Firmware Interface Table */

/*
 * All tables must be byte-packed to match the ACPI specification, since
 * the tables are provided by the system BIOS.
 */
#pragma pack(1)

/*
 * Note: C bitfields are not used for this reason:
 *
 * "Bitfields are great and easy to read, but unfortunately the C language
 * does not specify the layout of bitfields in memory, which means they are
 * essentially useless for dealing with packed data in on-disk formats or
 * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
 * this decision was a design error in C. Ritchie could have picked an order
 * and stuck with it." Norman Ramsey.
 * See http://stackoverflow.com/a/1053662/41661
 */

/*******************************************************************************
 *
 * Common subtable headers
 *
 ******************************************************************************/

/* Generic subtable header (used in MADT, SRAT, etc.) */

struct acpi_subtable_header {
	u8 type;
	u8 length;
};

/* Subtable header for WHEA tables (EINJ, ERST, WDAT) */

struct acpi_whea_header {
	u8 action;
	u8 instruction;
	u8 flags;
	u8 reserved;
	struct acpi_generic_address register_region;
	u64 value;		/* Value used with Read/Write register */
	u64 mask;		/* Bitmask required for this register instruction */
};

/*******************************************************************************
 *
 * BERT - Boot Error Record Table (ACPI 4.0)
 *        Version 1
 *
 ******************************************************************************/

struct acpi_table_bert {
	struct acpi_table_header header;	/* Common ACPI table header */
	u32 region_length;	/* Length of the boot error region */
	u64 address;		/* Physical address of the error region */
};

/* Boot Error Region (not a subtable, pointed to by Address field above) */

struct acpi_bert_region {
	u32 block_status;	/* Type of error information */
	u32 raw_data_offset;	/* Offset to raw error data */
	u32 raw_data_length;	/* Length of raw error data */
	u32 data_length;	/* Length of generic error data */
	u32 error_severity;	/* Severity code */
};

/* Values for block_status flags above */

#define ACPI_BERT_UNCORRECTABLE             (1)
#define ACPI_BERT_CORRECTABLE               (1<<1)
#define ACPI_BERT_MULTIPLE_UNCORRECTABLE    (1<<2)
#define ACPI_BERT_MULTIPLE_CORRECTABLE      (1<<3)
#define ACPI_BERT_ERROR_ENTRY_COUNT         (0xFF<<4)	/* 8 bits, error count */

/* Values for error_severity above */

enum acpi_bert_error_severity {
	ACPI_BERT_ERROR_CORRECTABLE = 0,
	ACPI_BERT_ERROR_FATAL = 1,
	ACPI_BERT_ERROR_CORRECTED = 2,
	ACPI_BERT_ERROR_NONE = 3,
	ACPI_BERT_ERROR_RESERVED = 4	/* 4 and greater are reserved */
};

/*
 * Note: The generic error data that follows the error_severity field above
 * uses the struct acpi_hest_generic_data defined under the HEST table below
 */

/*******************************************************************************
 *
 * CPEP - Corrected Platform Error Polling table (ACPI 4.0)
 *        Version 1
 *
 ******************************************************************************/

struct acpi_table_cpep {
	struct acpi_table_header header;	/* Common ACPI table header */
	u64 reserved;
};

/* Subtable */

struct acpi_cpep_polling</