/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  fw_tables.h - Parsing support for ACPI and ACPI-like tables provided by
 *                platform or device firmware
 *
 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 *  Copyright (C) 2023 Intel Corp.
 */
#ifndef _FW_TABLE_H_
#define _FW_TABLE_H_

union acpi_subtable_headers;

typedef int (*acpi_tbl_entry_handler)(union acpi_subtable_headers *header,
                                      const unsigned long end);

typedef int (*acpi_tbl_entry_handler_arg)(union acpi_subtable_headers *header,
                                          void *arg, const unsigned long end);

struct acpi_subtable_proc {
        int id;
        acpi_tbl_entry_handler handler;
        acpi_tbl_entry_handler_arg handler_arg;
        void *arg;
        int count;
};

union fw_table_header {
        struct acpi_table_header acpi;
        struct acpi_table_cdat cdat;
};

union acpi_subtable_headers {
        struct acpi_subtable_header common;
        struct acpi_hmat_structure hmat;
        struct acpi_prmt_module_header prmt;
        struct acpi_cedt_header cedt;
        struct acpi_cdat_header cdat;
};

int acpi_parse_entries_array(char *id, unsigned long table_size,
                             union fw_table_header *table_header,
                             unsigned long max_length,
                             struct acpi_subtable_proc *proc,
                             int proc_num, unsigned int max_entries);

int cdat_table_parse(enum acpi_cdat_type type,
                     acpi_tbl_entry_handler_arg handler_arg, void *arg,
                     struct acpi_table_cdat *table_header,
                     unsigned long length);

/* CXL is the only non-ACPI consumer of the FIRMWARE_TABLE library */
#if IS_ENABLED(CONFIG_ACPI) && !IS_ENABLED(CONFIG_CXL_BUS)
#define EXPORT_SYMBOL_FWTBL_LIB(x) EXPORT_SYMBOL_ACPI_LIB(x)
#define __init_or_fwtbl_lib __init_or_acpilib
#else
#define EXPORT_SYMBOL_FWTBL_LIB(x) EXPORT_SYMBOL_NS_GPL(x, "CXL")
#define __init_or_fwtbl_lib
#endif

#endif