sgi.h

来自「内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系」· C头文件 代码 · 共 48 行

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * sgi.h: Definitions specific to SGI machines.
 *
 * Copyright (C) 1996 David S. Miller ([e-mail])
 */
#ifndef _ASM_SGI_SGI_H
#define _ASM_SGI_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 */
	ip27,	/* R10k MP, R12k MP, Origin */
	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 /* _ASM_SGI_SGI_H */