xref: /src/sys/arch/m68k/include/cacheops_60.h

/*	$NetBSD: cacheops_60.h,v 1.15 2023/12/27 17:35:35 thorpej Exp $	*/

/*-
 * Copyright (c) 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Leo Weppelman
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#include <machine/fcode.h>

/*
 * Invalidate entire TLB.
 */
static __inline void __attribute__((__unused__))
TBIA_60(void)
{
	__asm volatile (" .word 0xf518" ); /*  pflusha */
}

/*
 * Invalidate any TLB entry for given VA (TB Invalidate Single)
 */
static __inline void __attribute__((__unused__))
TBIS_60(vaddr_t va)
{
	register uint8_t *r_va __asm("%a0") = (void *)va;
	int	tmp;

	__asm volatile (" movc   %1, %%dfc;"	/* select supervisor	*/
			  " .word 0xf508;"	/* pflush %a0@		*/
			  " moveq  %3, %1;"	/* select user		*/
			  " movc   %1, %%dfc;"
			  " .word 0xf508;"	/* pflush %a0@		*/
			  " movc   %%cacr,%1;"
			  " orl    %4,%1;"
			  " movc   %1,%%cacr" : "=d" (tmp) :
			  "0" (FC_SUPERD), "a" (r_va), "i" (FC_USERD),
			  "i" (IC60_CABC));
}

/*
 * Invalidate supervisor side of TLB
 */
static __inline void __attribute__((__unused__))
TBIAS_60(void)
{
	int	tmp;

	/*
	 * Cannot specify supervisor/user on pflusha, so we flush all
	 */
	__asm volatile (" .word 0xf518;"
			  " movc  %%cacr,%0;"
			  " orl   %1,%0;"
			  " movc  %0,%%cacr" /* clear all branch cache
					        entries */
			  : "=d" (tmp) : "i" (IC60_CABC) );
}

/*
 * Invalidate user side of TLB
 */
static __inline void __attribute__((__unused__))
TBIAU_60(void)
{
	int	tmp;

	/*
	 * Cannot specify supervisor/user on pflusha, so we flush all
	 */
	__asm volatile (" .word 0xf518;"
			  " movc  %%cacr,%0;"
			  " orl   %1,%0;"
			  " movc  %0,%%cacr" /* clear all branch cache
					        entries */
			  : "=d" (tmp) : "i" (IC60_CUBC) );
}

/*
 * Invalidate instruction cache
 */
static __inline void __attribute__((__unused__))
ICIA_60(void)
{
	/* inva ic (also clears branch cache) */
	__asm volatile (" .word 0xf498;");
}

static __inline void __attribute__((__unused__))
ICPA_60(void)
{
	/* inva ic (also clears branch cache) */
	__asm volatile (" .word 0xf498;");
}

/*
 * Invalidate data cache.
 */
static __inline void __attribute__((__unused__))
DCIA_60(void)
{
	__asm volatile (" .word 0xf478;"); /* cpusha dc */
}

static __inline void __attribute__((__unused__))
DCIS_60(void)
{
	__asm volatile (" .word 0xf478;"); /* cpusha dc */
}

static __inline void __attribute__((__unused__))
DCIU_60(void)
{
	__asm volatile (" .word 0xf478;"); /* cpusha dc */
}

static __inline void __attribute__((__unused__))
DCIAS_60(paddr_t pa)
{
	register uint8_t *r_pa __asm("%a0") = (void *)pa;

	__asm volatile (" .word 0xf468;" : : "a" (r_pa)); /* cpushl dc,%a0@ */
}

static __inline void __attribute__((__unused__))
PCIA_60(void)
{
	__asm volatile (" .word 0xf478;"); /* cpusha dc */
}

#define	DCFA_60()	DCFA_40()
#define	DCPA_60()	DCPA_40()
#define	ICPL_60(pa)	ICPL_40(pa)
#define	ICPP_60(pa)	ICPP_40(pa)
#define	DCPL_60(pa)	DCPL_40(pa)
#define	DCPP_60(pa)	DCPP_40(pa)
#define	DCFL_60(pa)	DCFL_40(pa)
#define	DCFP_60(pa)	DCFP_40(pa)