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

source code of linux/include/linux/fw_table.h

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