/*	$OpenBSD: cpu.h,v 1.2 1996/12/28 06:25:03 rahnds Exp $	*/
/*	$NetBSD: cpu.h,v 1.1 1996/09/30 16:34:21 ws Exp $	*/

/*
 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
 * Copyright (C) 1995, 1996 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>

struct machvec {
	void (*splx) __P((int));
	void (*irq_establish) __P((int, int, void (*)(void *), void *));
};
extern struct machvec machine_interface;

#include <machine/psl.h>

#define	irq_establish(irq, level, handler, arg)	\
	((*machine_interface.irq_establish)((irq), (level), (handler), (arg)))

#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(from, len)
	void *from;
	int len;
{
	int l = len;
	void *p = from;
	
	do {
		asm volatile ("dcbst 0,%0" :: "r"(p));
		p += CACHELINESIZE;
	} while ((l -= CACHELINESIZE) > 0);
	asm volatile ("sync");
	do {
		asm volatile ("icbi 0,%0" :: "r"(from));
		from += CACHELINESIZE;
	} while ((len -= CACHELINESIZE) > 0);
	asm volatile ("isync");
}

extern char *bootpath;

#endif	/* _MACHINE_CPU_H_ */