sgi.h

嵌入式系统设计与实例开发源码

/* $Id: sgi.h,v 1.1.1.1 1997/06/01 03:17:12 ralf Exp $
 * sgi.h: Definitions specific to SGI machines.
 *
 * Copyright (C) 1996 David S. Miller ([e-mail])
 */
#ifndef _MIPS_SGI_H
#define _MIPS_SGI_H

/* UP=UniProcessor MP=MultiProcessor(capable) */
enum sgi_mach {
	ip4,     /* R2k UP */
	ip5,     /* R2k MP */
	ip6,     /* R3k UP */
	ip7,     /* R3k MP */
	ip9,     /* R3k UP */
	ip12,    /* R3kA UP, Indigo */
	ip15,    /* R3kA MP */
	ip17,    /* R4K UP */
	ip19,    /* R4K MP */
	ip20,    /* R4K UP, Indigo */
	ip21,    /* TFP MP */
	ip22,    /* R4x00 UP, Indigo2 */
	ip25,    /* R10k MP */
	ip26,    /* TFP UP, Indigo2 */
	ip28,    /* R10k UP, Indigo2 */
	ip30,
	ip32,
};

extern enum sgi_mach sgimach;
extern void sgi_sysinit(void);

/* Many I/O space registers are byte sized and are contained within
 * one byte per word, specifically the MSB, this macro helps out.
 */
#ifdef __MIPSEL__
#define SGI_MSB(regaddr)   (regaddr)
#else
#define SGI_MSB(regaddr)   ((regaddr) | 0x3)
#endif

#endif /* !(_MIPS_SGI_H) */