/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * ACPI definitions * * A System Descriptor Table starts with a header of 4 bytes of signature * followed by 4 bytes of total table length then 28 bytes of ID information * (including the table checksum). */typedef struct Dsdt Dsdt;typedef struct Facp Facp;typedef struct Hpet Hpet;typedef struct Madt Madt;typedef struct Mcfg Mcfg;typedef struct Mcfgd Mcfgd;typedef struct Rsd Rsd; struct Dsdt {				/* Differentiated System DT */	uchar	sdthdr[36];		/* "DSDT" + length[4] + [28] */	uchar	db[];			/* Definition Block */};struct Facp {				/* Fixed ACPI DT */	uchar	sdthdr[36];		/* "FACP" + length[4] + [28] */	uchar	faddr[4];		/* Firmware Control Address */	uchar	dsdt[4];		/* DSDT Address */	uchar	pad[200];		/* total table is 244 */};struct Hpet {				/* High-Precision Event Timer DT */	uchar	sdthdr[36];		/* "HPET" + length[4] + [28] */	uchar	id[4];			/* Event Timer Block ID */	uchar	addr[12];		/* ACPI Format Address */	uchar	seqno;			/* Sequence Number */	uchar	minticks[2];		/* Minimum Clock Tick */	uchar	attr;			/* Page Protection */};struct Madt {				/* Multiple APIC DT */	uchar	sdthdr[36];		/* "MADT" + length[4] + [28] */	uchar	addr[4];		/* Local APIC Address */	uchar	flags[4];	uchar	structures[];};typedef struct Mcfg {			/* PCI Memory Mapped Config */	uchar	sdthdr[36];		/* "MCFG" + length[4] + [28] */	uchar	pad[8];			/* reserved */	Mcfgd	mcfgd[];		/* descriptors */} Mcfg;struct Mcfgd {				/* MCFG Descriptor */	uchar	addr[8];		/* base address */	uchar	segno[2];		/* segment group number */	uchar	sbno;			/* start bus number */	uchar	ebno;			/* end bus number */	uchar	pad[4];			/* reserved */};struct Rsd {				/* Root System Description * */	uchar	signature[8];		/* "RSD PTR " */	uchar	rchecksum;	uchar	oemid[6];	uchar	revision;	uchar	raddr[4];		/* RSDT */	uchar	length[4];	uchar	xaddr[8];		/* XSDT */	uchar	xchecksum;		/* XSDT */	uchar	pad[3];			/* reserved */};