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      1 /*	$NetBSD: cacheops_machdep.h,v 1.8 2023/12/27 17:35:34 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * Copyright (c) 1994, 1995 Gordon W. Ross
     38  * Copyright (c) 1988 University of Utah.
     39  *
     40  * This code is derived from software contributed to Berkeley by
     41  * the Systems Programming Group of the University of Utah Computer
     42  * Science Department.
     43  *
     44  * Redistribution and use in source and binary forms, with or without
     45  * modification, are permitted provided that the following conditions
     46  * are met:
     47  * 1. Redistributions of source code must retain the above copyright
     48  *    notice, this list of conditions and the following disclaimer.
     49  * 2. Redistributions in binary form must reproduce the above copyright
     50  *    notice, this list of conditions and the following disclaimer in the
     51  *    documentation and/or other materials provided with the distribution.
     52  * 3. All advertising materials mentioning features or use of this software
     53  *    must display the following acknowledgement:
     54  *	This product includes software developed by the University of
     55  *	California, Berkeley and its contributors.
     56  * 4. Neither the name of the University nor the names of its contributors
     57  *    may be used to endorse or promote products derived from this software
     58  *    without specific prior written permission.
     59  *
     60  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     61  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     62  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     63  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     64  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     65  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     66  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     67  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     68  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     69  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     70  * SUCH DAMAGE.
     71  */
     72 
     73 #ifndef _HP300_CACHEOPS_MACHDEP_H_
     74 #define	_HP300_CACHEOPS_MACHDEP_H_
     75 
     76 #include <machine/fcode.h>
     77 
     78 extern vaddr_t MMUbase;
     79 
     80 static __inline int __attribute__((__unused__))
     81 DCIA_md(void)
     82 {
     83 	volatile int *ip = (void *)(MMUbase + MMUCMD);
     84 
     85 	if (ectype != EC_VIRT) {
     86 		return 0;
     87 	}
     88 
     89 	*ip &= ~MMU_CEN;
     90 	*ip |= MMU_CEN;
     91 	return 1;
     92 }
     93 
     94 static __inline int __attribute__((__unused__))
     95 DCIS_md(void)
     96 {
     97 	volatile int *ip = (void *)(MMUbase + MMUSSTP);
     98 
     99 	if (ectype != EC_VIRT) {
    100 		return 0;
    101 	}
    102 
    103 	*ip = *ip;
    104 	return 1;
    105 }
    106 
    107 static __inline int __attribute__((__unused__))
    108 DCIU_md(void)
    109 {
    110 	volatile int *ip = (void *)(MMUbase + MMUUSTP);
    111 
    112 	if (ectype != EC_VIRT) {
    113 		return 0;
    114 	}
    115 
    116 	*ip = *ip;
    117 	return 1;
    118 }
    119 
    120 static __inline int __attribute__((__unused__))
    121 PCIA_md(void)
    122 {
    123 	volatile int *ip = (void *)(MMUbase + MMUCMD);
    124 
    125 	if (ectype != EC_PHYS || cputype != CPU_68030) {
    126 		return 0;
    127 	}
    128 
    129 	*ip &= ~MMU_CEN;
    130 	*ip |= MMU_CEN;
    131 
    132 	/*
    133 	 * only some '030 models (345/370/375/400) have external PAC,
    134 	 * so we need to do the standard flushing as well.
    135 	 */
    136 
    137 	return 0;
    138 }
    139 
    140 static __inline int __attribute__((__unused__))
    141 TBIA_md(void)
    142 {
    143 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    144 
    145 	if (mmutype != MMU_HP) {
    146 		return 0;
    147 	}
    148 
    149 	(void) *ip;
    150 	return 1;
    151 }
    152 
    153 static __inline int __attribute__((__unused__))
    154 TBIS_md(vaddr_t va)
    155 {
    156 	register vaddr_t r_va __asm("%a1") = va;
    157 	int s;
    158 
    159 	if (mmutype != MMU_HP) {
    160 		return 0;
    161 	}
    162 
    163 	s = splhigh();
    164 	__asm volatile (" movc   %0, %%dfc;"	/* select purge space */
    165 			  " movsl  %3, %1@;"	/* purge it */
    166 			  " movc   %2, %%dfc;"
    167 			  : : "r" (FC_PURGE), "a" (r_va), "r" (FC_USERD),
    168 			  "r" (0));
    169 	splx(s);
    170 	return 1;
    171 }
    172 
    173 static __inline int __attribute__((__unused__))
    174 TBIAS_md(void)
    175 {
    176 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    177 
    178 	if (mmutype != MMU_HP) {
    179 		return 0;
    180 	}
    181 
    182 	*ip = 0x8000;
    183 	return 1;
    184 }
    185 
    186 static __inline int __attribute__((__unused__))
    187 TBIAU_md(void)
    188 {
    189 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    190 
    191 	if (mmutype != MMU_HP) {
    192 		return 0;
    193 	}
    194 
    195 	*ip = 0;
    196 	return 1;
    197 }
    198 #endif /* _HP300_CACHEOPS_MACHDEP_H_ */
    199