/*	$OpenBSD: cpu.h,v 1.16 2003/06/02 23:27:50 millert Exp $ */

/*
 * Copyright (c) 1995 Theo de Raadt
 * 
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
 *
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1982, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
 *
 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
 *
 *	@(#)cpu.h	8.4 (Berkeley) 1/5/94
 */

#ifndef _MVME68K_CPU_H_
#define _MVME68K_CPU_H_

/*
 * Exported definitions unique to mvme68k cpu support.
 */

/*
 * CTL_MACHDEP definitions.
 */
#define	CPU_CONSDEV		1	/* dev_t: console terminal device */
#define	CPU_MAXID		2	/* number of valid machdep ids */

#define CTL_MACHDEP_NAMES { \
	{ 0, 0 }, \
	{ "console_device", CTLTYPE_STRUCT }, \
}

/*
 * Get common m68k CPU definiti÷ns.
 */
#define M68K_MMU_MOTOROLA
#include <m68k/cpu.h>

#ifdef	_KERNEL

/*
 * Get interrupt glue.
 */
#include <machine/intr.h>

/*
 * definitions of cpu-dependent requirements
 * referenced in generic code
 */
#define	cpu_swapin(p)			/* nothing */
#define	cpu_wait(p)			/* nothing */
#define cpu_swapout(p)			/* nothing */

/*
 * Arguments to hardclock and gatherstats encapsulate the previous
 * machine state in an opaque clockframe.  One the m68k, we use
 * what the hardware pushes on an interrupt (frame format 0).
 */
struct clockframe {
	u_short	sr;		/* sr at time of interrupt */
	u_long	pc;		/* pc at time of interrupt */
	u_short	vo;		/* vector offset (4-word frame) */
};

#define	CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
#define	CLKF_PC(framep)		((framep)->pc)
#if 0
/* We would like to do it this way... */
#define	CLKF_INTR(framep)	(((framep)->sr & PSL_M) == 0)
#else
/* but until we start using PSL_M, we have to do this instead */
#define	CLKF_INTR(framep)	(0)	/* XXX */
#endif


/*
 * Preempt the current process if in interrupt from user mode,
 * or after the current trap/syscall if in system mode.
 */
extern int want_resched;
#define	need_resched()	{ want_resched = 1; aston(); }

/*
 * Give a profiling tick to the current process when the user profiling
 * buffer pages are invalid.  On the m68k, request an ast to send us
 * through trap, marking the proc as needing a profiling tick.
 */
#define	need_proftick(p)	{ (p)->p_flag |= P_OWEUPC; aston(); }

/*
 * Notify the current process (p) that it has a signal pending,
 * process as soon as possible.
 */
#define	signotify(p)	aston()

extern int astpending;
#define aston() (astpending = 1)

extern	char *intiobase, *intiolimit;
extern	char *iiomapbase;
extern	int iiomapsize;

/* physical memory sections for mvme147 */
#define	INTIOBASE_147	(0xfffe0000)
#define	INTIOTOP_147	(0xfffe5000)
#define	INTIOSIZE_147	((INTIOTOP_147-INTIOBASE_147)/NBPG)

/* physical memory sections for mvme16x */
#define	INTIOBASE_162	(0xfff00000)
#define	INTIOTOP_162	(0xfffd0000)		/* was 0xfff50000 */
#define	INTIOSIZE_162	((INTIOTOP_162-INTIOBASE_162)/NBPG)

/*
 * Internal IO space (iiomapsize).
 *
 * Internal IO space is mapped in the kernel from ``intiobase'' to
 * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
 * conversion between physical and kernel virtual addresses is easy.
 */
#define	ISIIOVA(va) \
	((char *)(va) >= intiobase && (char *)(va) < intiolimit)
#define	IIOV(pa)	((int)(pa)-(int)iiomapbase+(int)intiobase)
#define	IIOP(va)	((int)(va)-(int)intiobase+(int)iiomapbase)
#define	IIOPOFF(pa)	((int)(pa)-(int)iiomapbase)

extern int	cputyp;
#define CPU_147			0x147
#define CPU_162			0x162
#define CPU_166			0x166
#define CPU_167			0x167
#define CPU_172			0x172
#define CPU_177			0x177

struct intrhand {
	struct	intrhand *ih_next;
	int	(*ih_fn)(void *);
	void	*ih_arg;
	int	ih_ipl;
	int	ih_wantframe;
};

int intr_establish(int, struct intrhand *);

struct haltvec {
	struct haltvec *hv_next;
	void	(*hv_fn)(void);
	int	hv_pri;
};

struct frame;
struct fpframe;
struct pcb;

void	m68881_save(struct fpframe *);
void	m68881_restore(struct fpframe *);
void	DCIA(void);
void	DCIS(void);
void	DCIAS(vaddr_t);
void	DCIU(void);
void	ICIA(void);
void	ICPA(void);
void	PCIA(void);
void	TBIA(void);
void	TBIS(vaddr_t);
void	TBIAS(void);
void	TBIAU(void);
#if defined(M68040) || defined(M68060)
void	DCFA(void);
void	DCFP(paddr_t);
void	DCFL(paddr_t);
void	DCPL(paddr_t);
void	DCPP(paddr_t);
void	ICPL(paddr_t);
void	ICPP(paddr_t);
#endif
int	suline(caddr_t, caddr_t);
void	savectx(struct pcb *);
void	switch_exit(struct proc *);
__dead void	doboot(void);
void	loadustp(int);
void	proc_trampoline(void);

int badpaddr(paddr_t, int);
int badvaddr(vaddr_t, int);
void nmihand(void *);
int intr_findvec(int, int);

void dma_cachectl(caddr_t, int);
paddr_t kvtop(vaddr_t);
void physaccess(vaddr_t, paddr_t, size_t, int);
void physunaccess(vaddr_t, size_t);

#endif	/* _KERNEL */
#endif	/* _MVME68K_CPU_H_ */