/* $NetBSD: cacheops_machdep.h,v 1.8 2023/12/27 17:35:34 thorpej Exp $ */

/* $NetBSD: cacheops_machdep.h,v 1.8 2023/12/27 17:35:34 thorpej Exp $ */

/*
* Copyright (c) 1980, 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.
*/

/*
* Copyright (c) 1994, 1995 Gordon W. Ross
* Copyright (c) 1988 University of Utah.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/

#ifndef _HP300_CACHEOPS_MACHDEP_H_
#define _HP300_CACHEOPS_MACHDEP_H_

#include <machine/fcode.h>

extern vaddr_t MMUbase;

static __inline int __attribute__((__unused__))
DCIA_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUCMD);

if (ectype != EC_VIRT) {
return 0;
}

*ip &= ~MMU_CEN;
*ip |= MMU_CEN;
return 1;
}

static __inline int __attribute__((__unused__))
DCIS_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUSSTP);

if (ectype != EC_VIRT) {
return 0;
}

*ip = *ip;
return 1;
}

static __inline int __attribute__((__unused__))
DCIU_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUUSTP);

if (ectype != EC_VIRT) {
return 0;
}

*ip = *ip;
return 1;
}

static __inline int __attribute__((__unused__))
PCIA_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUCMD);

if (ectype != EC_PHYS || cputype != CPU_68030) {
return 0;
}

*ip &= ~MMU_CEN;
*ip |= MMU_CEN;

/*
* only some '030 models (345/370/375/400) have external PAC,
* so we need to do the standard flushing as well.
*/

return 0;
}

static __inline int __attribute__((__unused__))
TBIA_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUTBINVAL);

if (mmutype != MMU_HP) {
return 0;
}

(void) *ip;
return 1;
}

static __inline int __attribute__((__unused__))
TBIS_md(vaddr_t va)
{
register vaddr_t r_va __asm("%a1") = va;
int s;

if (mmutype != MMU_HP) {
return 0;
}

s = splhigh();
__asm volatile (" movc %0, %%dfc;" /* select purge space */
" movsl %3, %1@;" /* purge it */
" movc %2, %%dfc;"
: : "r" (FC_PURGE), "a" (r_va), "r" (FC_USERD),
"r" (0));
splx(s);
return 1;
}

static __inline int __attribute__((__unused__))
TBIAS_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUTBINVAL);

if (mmutype != MMU_HP) {
return 0;
}

*ip = 0x8000;
return 1;
}

static __inline int __attribute__((__unused__))
TBIAU_md(void)
{
volatile int *ip = (void *)(MMUbase + MMUTBINVAL);

if (mmutype != MMU_HP) {
return 0;
}

*ip = 0;
return 1;
}
#endif /* _HP300_CACHEOPS_MACHDEP_H_ */