xref: /netbsd/sys/arch/cesfic/cesfic/sic6351.c (revision bf9ec67e)
1 /* $NetBSD: sic6351.c,v 1.1 2001/05/14 18:23:04 drochner Exp $ */
2 
3 /*
4  * Copyright (c) 1997, 1999
5  *	Matthias Drochner.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  */
28 
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 
32 #include <machine/cpu.h>
33 #include <machine/pte.h>
34 
35 void sicinit __P((void*));
36 int act2icr __P((int));
37 void sic_enable_int __P((int, int, int, int, int));
38 
39 static char *sicbase;
40 
41 void
42 sicinit(base)
43 	void *base;
44 {
45 	int i;
46 
47 	sicbase = base;
48 
49 	for(i = 0x100; i <= 0x1a4; i += 4)
50 		*(volatile int *)(sicbase + i) = 0;
51 }
52 
53 int
54 act2icr(act)
55 	int act;
56 {
57 	if (act == 17)
58 		return (0x90); /* ILACC */
59 	if (act == 19)
60 		return (0x94); /* ZS */
61 	if (act == 25)
62 		return (0xa4); /* RTC */
63 	if (act == 39)
64 		return (0x6c); /* ABORT A */
65 	panic("sic: unknown act %d", act);
66 }
67 
68 void
69 sic_enable_int(nr, type, icod, level, vector)
70 	int nr, type, icod, level, vector;
71 {
72 
73 	if (icod == 0)
74 		*(volatile int *)(sicbase + 0x300 + nr * 4) = vector;
75 	*(volatile int *)(sicbase + 0x200 + nr * 4) = icod;
76 	*(volatile int *)(sicbase + 0x100 + act2icr(nr))
77 		= 0x80 | (type << 4) | level;
78 }
79