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/*
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU Hurd. If not, see <<a rel="nofollow" href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>>.
*/
/* ACPI tables basic structure */
#ifndef ACPI_H
#define ACPI_H
#include <stdlib.h>
#include <inttypes.h>
/* PnP Extended System Configuration Data (ESCD) memory region */
#define ESCD 0xe0000U
#define RSDP_MAGIC (const unsigned char *)"RSD PTR "
#define ESCD_SIZE 0x20000U
#define SLP_EN (0x1 << 13)
#define SCI_EN 1
#define SMI_CMD_OFFSET 12
#define SMI_EN_OFFSET 16
#define PM1A_CTL_OFFSET 28
#define PM1B_CTL_OFFSET 32
struct rsdp_descr
{
uint8_t magic[8];
uint8_t checksum;
uint8_t oem_id[6];
uint8_t revision;
uint32_t rsdt_addr;
} __attribute__ ((packed));
struct rsdp_descr2
{
struct rsdp_descr v1;
uint32_t length;
uint64_t xsdt_addr;
uint8_t checksum;
uint8_t reserved[3];
} __attribute__ ((packed));
struct acpi_header
{
uint8_t signature[4];
uint32_t length;
uint8_t revision;
uint8_t checksum;
uint8_t oem_id[6];
uint8_t oem_table_id[8];
uint32_t oem_revision;
uint32_t creator_id;
uint32_t creator_revision;
} __attribute__ ((packed));
struct acpi_table
{
struct acpi_header h;
void *data;
size_t datalen;
} __attribute__ ((packed));
int acpi_get_num_tables(size_t *num_tables);
int acpi_get_tables(struct acpi_table **tables);
#endif /* ACPI_H */
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