xref: /src/sys/arch/macppc/include/cpu.h

/*	$NetBSD: cpu.h,v 1.4 1998/10/25 10:13:21 tsubai Exp $	*/

/*
 * Copyright (C) 1995-1997 Wolfgang Solfrank.
 * Copyright (C) 1995-1997 TooLs GmbH.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by TooLs GmbH.
 * 4. The name of TooLs GmbH may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef	_MACHINE_CPU_H_
#define	_MACHINE_CPU_H_

#include <machine/frame.h>
#include <machine/psl.h>
#include <machine/intr.h>

#define	CLKF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
#define	CLKF_BASEPRI(frame)	((frame)->pri == 0)
#define	CLKF_PC(frame)		((frame)->srr0)
#define	CLKF_INTR(frame)	((frame)->depth > 0)

#define	cpu_swapout(p)
#define cpu_wait(p)

extern void delay __P((unsigned));
#define	DELAY(n)		delay(n)

extern __volatile int want_resched;
extern __volatile int astpending;

#define	need_resched()		(want_resched = 1, astpending = 1)
#define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, astpending = 1)
#define	signotify(p)		(astpending = 1)

#define	CACHELINESIZE	32			/* For now		XXX */

extern __inline void syncicache __P((void *, int));
extern __inline void flushcache __P((void *, int));

extern __inline void
syncicache(from, len)
	void *from;
	int len;
{
	int l, off;
	char *p;

	off = (int)from & (CACHELINESIZE - 1);
	from -= off;
	len += off;

	p = from; l = len;
	do {
		__asm__ __volatile ("dcbst 0,%0" :: "r"(p));
		p += CACHELINESIZE;
	} while ((l -= CACHELINESIZE) > 0);
	__asm__ __volatile ("sync");

	p = from; l = len;
	do {
		__asm__ __volatile ("icbi 0,%0" :: "r"(p));
		p += CACHELINESIZE;
	} while ((l -= CACHELINESIZE) > 0);
	__asm__ __volatile ("isync");
}

extern __inline void
flushcache(from, len)
	void *from;
	int len;
{
	int l, off;
	char *p;

	off = (int)from & (CACHELINESIZE - 1);
	from -= off;
	len += off;

	l = len; p = from;
	do {
		__asm__ __volatile ("dcbf 0,%0" :: "r"(p));
		p += CACHELINESIZE;
	} while ((l -= CACHELINESIZE) > 0);
	__asm__ __volatile ("sync");
	l = len; p = from;
	do {
		__asm__ __volatile ("icbi 0,%0" :: "r"(p));
		p += CACHELINESIZE;
	} while ((l -= CACHELINESIZE) > 0);
	__asm__ __volatile ("isync");
}

extern char *bootpath;

#endif	/* _MACHINE_CPU_H_ */