1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 *  fw_tables.h - Parsing support for ACPI and ACPI-like tables provided by
4 *                platform or device firmware
5 *
6 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 *  Copyright (C) 2023 Intel Corp.
8 */
9#ifndef _FW_TABLE_H_
10#define _FW_TABLE_H_
11
12union acpi_subtable_headers;
13
14typedef int (*acpi_tbl_entry_handler)(union acpi_subtable_headers *header,
15				      const unsigned long end);
16
17typedef int (*acpi_tbl_entry_handler_arg)(union acpi_subtable_headers *header,
18					  void *arg, const unsigned long end);
19
20struct acpi_subtable_proc {
21	int id;
22	acpi_tbl_entry_handler handler;
23	acpi_tbl_entry_handler_arg handler_arg;
24	void *arg;
25	int count;
26};
27
28union fw_table_header {
29	struct acpi_table_header acpi;
30	struct acpi_table_cdat cdat;
31};
32
33union acpi_subtable_headers {
34	struct acpi_subtable_header common;
35	struct acpi_hmat_structure hmat;
36	struct acpi_prmt_module_header prmt;
37	struct acpi_cedt_header cedt;
38	struct acpi_cdat_header cdat;
39};
40
41int acpi_parse_entries_array(char *id, unsigned long table_size,
42			     union fw_table_header *table_header,
43			     unsigned long max_length,
44			     struct acpi_subtable_proc *proc,
45			     int proc_num, unsigned int max_entries);
46
47int cdat_table_parse(enum acpi_cdat_type type,
48		     acpi_tbl_entry_handler_arg handler_arg, void *arg,
49		     struct acpi_table_cdat *table_header,
50		     unsigned long length);
51
52/* CXL is the only non-ACPI consumer of the FIRMWARE_TABLE library */
53#if IS_ENABLED(CONFIG_ACPI) && !IS_ENABLED(CONFIG_CXL_BUS)
54#define EXPORT_SYMBOL_FWTBL_LIB(x) EXPORT_SYMBOL_ACPI_LIB(x)
55#define __init_or_fwtbl_lib __init_or_acpilib
56#else
57#define EXPORT_SYMBOL_FWTBL_LIB(x) EXPORT_SYMBOL_NS_GPL(x, CXL)
58#define __init_or_fwtbl_lib
59#endif
60
61#endif
62