1 /*	$NetBSD: cacheops_machdep.h,v 1.2 2002/11/03 01:34:41 chs Exp $	*/
2 
3 /*
4  * Copyright (c) 1994, 1995 Gordon W. Ross
5  * Copyright (c) 1988 University of Utah.
6  * Copyright (c) 1980, 1990, 1993
7  *	The Regents of the University of California.  All rights reserved.
8  *
9  * This code is derived from software contributed to Berkeley by
10  * the Systems Programming Group of the University of Utah Computer
11  * Science Department.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. All advertising materials mentioning features or use of this software
22  *    must display the following acknowledgement:
23  *	This product includes software developed by the University of
24  *	California, Berkeley and its contributors.
25  * 4. Neither the name of the University nor the names of its contributors
26  *    may be used to endorse or promote products derived from this software
27  *    without specific prior written permission.
28  *
29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39  * SUCH DAMAGE.
40  */
41 
42 #ifndef _HP300_CACHEOPS_MACHDEP_H_
43 #define	_HP300_CACHEOPS_MACHDEP_H_
44 
45 extern vaddr_t MMUbase;
46 
47 static __inline int __attribute__((__unused__))
48 DCIA_md(void)
49 {
50 	volatile int *ip = (void *)(MMUbase + MMUCMD);
51 
52 	if (ectype != EC_VIRT) {
53 		return 0;
54 	}
55 
56 	*ip &= ~MMU_CEN;
57 	*ip |= MMU_CEN;
58 	return 1;
59 }
60 
61 static __inline int __attribute__((__unused__))
62 DCIS_md(void)
63 {
64 	volatile int *ip = (void *)(MMUbase + MMUSSTP);
65 
66 	if (ectype != EC_VIRT) {
67 		return 0;
68 	}
69 
70 	*ip = *ip;
71 	return 1;
72 }
73 
74 static __inline int __attribute__((__unused__))
75 DCIU_md(void)
76 {
77 	volatile int *ip = (void *)(MMUbase + MMUUSTP);
78 
79 	if (ectype != EC_VIRT) {
80 		return 0;
81 	}
82 
83 	*ip = *ip;
84 	return 1;
85 }
86 
87 static __inline int __attribute__((__unused__))
88 PCIA_md(void)
89 {
90 	volatile int *ip = (void *)(MMUbase + MMUCMD);
91 
92 	if (ectype != EC_PHYS || cputype != CPU_68030) {
93 		return 0;
94 	}
95 
96 	*ip &= ~MMU_CEN;
97 	*ip |= MMU_CEN;
98 
99 	/*
100 	 * only some '030 models (345/370/375/400) have external PAC,
101 	 * so we need to do the standard flushing as well.
102 	 */
103 
104 	return 0;
105 }
106 
107 static __inline int __attribute__((__unused__))
108 TBIA_md(void)
109 {
110 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
111 
112 	if (mmutype != MMU_HP) {
113 		return 0;
114 	}
115 
116 	(void) *ip;
117 	return 1;
118 }
119 
120 static __inline int __attribute__((__unused__))
121 TBIS_md(vaddr_t va)
122 {
123 	vaddr_t r_va __asm("%a0") = va;
124 	int s;
125 
126 	if (mmutype != MMU_HP) {
127 		return 0;
128 	}
129 
130 	s = splhigh();
131 	__asm __volatile (" movc   %0, %%dfc;"	/* select purge space */
132 			  " movsl  %3, %1@;"	/* purge it */
133 			  " movc   %2, %%dfc;"
134 			  : : "r" (FC_PURGE), "a" (r_va), "r" (FC_USERD),
135 			  "r" (0));
136 	splx(s);
137 	return 1;
138 }
139 
140 static __inline int __attribute__((__unused__))
141 TBIAS_md(void)
142 {
143 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
144 
145 	if (mmutype != MMU_HP) {
146 		return 0;
147 	}
148 
149 	*ip = 0x8000;
150 	return 1;
151 }
152 
153 static __inline int __attribute__((__unused__))
154 TBIAU_md(void)
155 {
156 	volatile int *ip = (void *)(MMUbase + MMUTBINVAL);
157 
158 	if (mmutype != MMU_HP) {
159 		return 0;
160 	}
161 
162 	*ip = 0;
163 	return 1;
164 }
165 #endif /* _HP300_CACHEOPS_MACHDEP_H_ */
166