HelenOS Kernel (ia32): kernel/genarch/include/acpi/acpi.h Source File

00001 /*
00002  * Copyright (C) 2005 Jakub Jermar
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __ACPI_H__
00036 #define __ACPI_H__
00037 
00038 #include <arch/types.h>
00039 
00040 /* Root System Description Pointer */
00041 struct acpi_rsdp {
00042         __u8 signature[8];
00043         __u8 checksum;
00044         __u8 oemid[6];
00045         __u8 revision;
00046         __u32 rsdt_address;
00047         __u32 length;
00048         __u64 xsdt_address;
00049         __u32 ext_checksum;
00050         __u8 reserved[3];
00051 } __attribute__ ((packed));
00052 
00053 /* System Description Table Header */
00054 struct acpi_sdt_header {
00055         __u8 signature[4];
00056         __u32 length;
00057         __u8 revision;
00058         __u8 checksum;
00059         __u8 oemid[6];
00060         __u8 oem_table_id[8];
00061         __u32 oem_revision;
00062         __u32 creator_id;
00063         __u32 creator_revision;
00064 } __attribute__ ((packed));;
00065 
00066 struct acpi_signature_map {
00067         __u8 *signature;
00068         struct acpi_sdt_header **sdt_ptr;
00069         char *description;
00070 };
00071 
00072 /* Root System Description Table */
00073 struct acpi_rsdt {
00074         struct acpi_sdt_header header;
00075         __u32 entry[];
00076 } __attribute__ ((packed));;
00077 
00078 /* Extended System Description Table */
00079 struct acpi_xsdt {
00080         struct acpi_sdt_header header;
00081         __u64 entry[];
00082 } __attribute__ ((packed));;
00083 
00084 extern struct acpi_rsdp *acpi_rsdp;
00085 extern struct acpi_rsdt *acpi_rsdt;
00086 extern struct acpi_xsdt *acpi_xsdt;
00087 
00088 extern void acpi_init(void);
00089 extern int acpi_sdt_check(__u8 *sdt);
00090 
00091 #endif /* __ACPI_H__ */
00092