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cacheops_machdep.h revision 1.6 
      1 /*	$NetBSD: cacheops_machdep.h,v 1.6 2005/12/24 20:07:03 perry 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 extern vaddr_t MMUbase;
     77 
     78 static inline int __attribute__((__unused__))
     79 DCIA_md(void)
     80 {
     81 	volatile int *ip = (void *)(MMUbase + MMUCMD);
     82 
     83 	if (ectype != EC_VIRT) {
     84 		return 0;
     85 	}
     86 
     87 	*ip &= ~MMU_CEN;
     88 	*ip |= MMU_CEN;
     89 	return 1;
     90 }
     91 
     92 static inline int __attribute__((__unused__))
     93 DCIS_md(void)
     94 {
     95 	volatile int *ip = (void *)(MMUbase + MMUSSTP);
     96 
     97 	if (ectype != EC_VIRT) {
     98 		return 0;
     99 	}
    100 
    101 	*ip = *ip;
    102 	return 1;
    103 }
    104 
    105 static inline int __attribute__((__unused__))
    106 DCIU_md(void)
    107 {
    108 	volatile int *ip = (void *)(MMUbase + MMUUSTP);
    109 
    110 	if (ectype != EC_VIRT) {
    111 		return 0;
    112 	}
    113 
    114 	*ip = *ip;
    115 	return 1;
    116 }
    117 
    118 static inline int __attribute__((__unused__))
    119 PCIA_md(void)
    120 {
    121 	volatile int *ip = (void *)(MMUbase + MMUCMD);
    122 
    123 	if (ectype != EC_PHYS || cputype != CPU_68030) {
    124 		return 0;
    125 	}
    126 
    127 	*ip &= ~MMU_CEN;
    128 	*ip |= MMU_CEN;
    129 
    130 	/*
    131 	 * only some '030 models (345/370/375/400) have external PAC,
    132 	 * so we need to do the standard flushing as well.
    133 	 */
    134 
    135 	return 0;
    136 }
    137 
    138 static inline int __attribute__((__unused__))
    139 TBIA_md(void)
    140 {
    141 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    142 
    143 	if (mmutype != MMU_HP) {
    144 		return 0;
    145 	}
    146 
    147 	(void) *ip;
    148 	return 1;
    149 }
    150 
    151 static inline int __attribute__((__unused__))
    152 TBIS_md(vaddr_t va)
    153 {
    154 	register vaddr_t r_va __asm("%a1") = va;
    155 	int s;
    156 
    157 	if (mmutype != MMU_HP) {
    158 		return 0;
    159 	}
    160 
    161 	s = splhigh();
    162 	__asm volatile (" movc   %0, %%dfc;"	/* select purge space */
    163 			  " movsl  %3, %1@;"	/* purge it */
    164 			  " movc   %2, %%dfc;"
    165 			  : : "r" (FC_PURGE), "a" (r_va), "r" (FC_USERD),
    166 			  "r" (0));
    167 	splx(s);
    168 	return 1;
    169 }
    170 
    171 static inline int __attribute__((__unused__))
    172 TBIAS_md(void)
    173 {
    174 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    175 
    176 	if (mmutype != MMU_HP) {
    177 		return 0;
    178 	}
    179 
    180 	*ip = 0x8000;
    181 	return 1;
    182 }
    183 
    184 static inline int __attribute__((__unused__))
    185 TBIAU_md(void)
    186 {
    187 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
    188 
    189 	if (mmutype != MMU_HP) {
    190 		return 0;
    191 	}
    192 
    193 	*ip = 0;
    194 	return 1;
    195 }
    196 #endif /* _HP300_CACHEOPS_MACHDEP_H_ */
    197