Annotation of sys/arch/aviion/dev/syscon.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: syscon.c,v 1.3 2006/11/16 23:21:56 miod Exp $ */
2: /*
3: * Copyright (c) 1999 Steve Murphree, Jr.
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #include <sys/param.h>
28: #include <sys/conf.h>
29: #include <sys/systm.h>
30: #include <sys/kernel.h>
31: #include <sys/device.h>
32:
33: #include <machine/autoconf.h>
34: #include <machine/cpu.h>
35:
36: #include <machine/avcommon.h>
37: #include <aviion/dev/sysconreg.h>
38:
39: struct sysconsoftc {
40: struct device sc_dev;
41:
42: struct intrhand sc_abih; /* `abort' switch */
43: struct intrhand sc_acih; /* `ac fail' */
44: struct intrhand sc_sfih; /* `sys fail' */
45: };
46:
47: void sysconattach(struct device *, struct device *, void *);
48: int sysconmatch(struct device *, void *, void *);
49:
50: int syscon_print(void *, const char *);
51: int syscon_scan(struct device *, void *, void *);
52: int sysconabort(void *);
53: int sysconacfail(void *);
54: int sysconsysfail(void *);
55: int sysconav400(void *);
56:
57: struct cfattach syscon_ca = {
58: sizeof(struct sysconsoftc), sysconmatch, sysconattach
59: };
60:
61: struct cfdriver syscon_cd = {
62: NULL, "syscon", DV_DULL
63: };
64:
65: int
66: sysconmatch(struct device *parent, void *cf, void *args)
67: {
68: return (syscon_cd.cd_ndevs == 0);
69: }
70:
71: void
72: sysconattach(struct device *parent, struct device *self, void *args)
73: {
74: struct sysconsoftc *sc = (struct sysconsoftc *)self;
75:
76: printf("\n");
77:
78: /*
79: * Clear SYSFAIL if lit.
80: */
81: *(volatile u_int32_t *)AV_UCSR |= UCSR_DRVSFBIT;
82:
83: /*
84: * pseudo driver, abort interrupt handler
85: */
86: sc->sc_abih.ih_fn = sysconabort;
87: sc->sc_abih.ih_arg = 0;
88: sc->sc_abih.ih_wantframe = 1;
89: sc->sc_abih.ih_ipl = IPL_ABORT;
90:
91: sc->sc_acih.ih_fn = sysconacfail;
92: sc->sc_acih.ih_arg = 0;
93: sc->sc_acih.ih_wantframe = 1;
94: sc->sc_acih.ih_ipl = IPL_ABORT;
95:
96: sc->sc_sfih.ih_fn = sysconsysfail;
97: sc->sc_sfih.ih_arg = 0;
98: sc->sc_sfih.ih_wantframe = 1;
99: sc->sc_sfih.ih_ipl = IPL_ABORT;
100:
101: sysconintr_establish(SYSCV_ABRT, &sc->sc_abih, "abort");
102: sysconintr_establish(SYSCV_ACF, &sc->sc_acih, "acfail");
103: sysconintr_establish(SYSCV_SYSF, &sc->sc_sfih, "sysfail");
104:
105: config_search(syscon_scan, self, args);
106: }
107:
108: int
109: syscon_scan(struct device *parent, void *child, void *args)
110: {
111: struct cfdata *cf = child;
112: struct confargs oca, *ca = args;
113:
114: bzero(&oca, sizeof oca);
115: oca.ca_iot = ca->ca_iot;
116: oca.ca_offset = (paddr_t)cf->cf_loc[0];
117: if (oca.ca_offset != (paddr_t)-1)
118: oca.ca_paddr = ca->ca_paddr + oca.ca_offset;
119: else
120: oca.ca_paddr = (paddr_t)-1;
121: oca.ca_ipl = (u_int)cf->cf_loc[1];
122:
123: if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
124: return (0);
125:
126: config_attach(parent, cf, &oca, syscon_print);
127: return (1);
128: }
129:
130: int
131: syscon_print(void *args, const char *pnp)
132: {
133: struct confargs *ca = args;
134:
135: if (ca->ca_offset != (paddr_t)-1)
136: printf(" offset 0x%x", ca->ca_offset);
137: if (ca->ca_ipl != (u_int)-1)
138: printf(" ipl %u", ca->ca_ipl);
139: return (UNCONF);
140: }
141:
142: int
143: sysconintr_establish(u_int vec, struct intrhand *ih, const char *name)
144: {
145: #ifdef DIAGNOSTIC
146: if (vec < 0 || vec >= SYSCON_NVEC) {
147: printf("sysconintr_establish: illegal vector 0x%x\n", vec);
148: return (EINVAL);
149: }
150: #endif
151:
152: return (intr_establish(SYSCON_VECT + vec, ih, name));
153: }
154:
155: int
156: sysconabort(void *eframe)
157: {
158: *(volatile u_int32_t *)AV_CLRINT = ISTATE_ABORT;
159: nmihand(eframe);
160: return (1);
161: }
162:
163: int
164: sysconsysfail(void *eframe)
165: {
166: *(volatile u_int32_t *)AV_CLRINT = ISTATE_SYSFAIL;
167: printf("WARNING: SYSFAIL* ASSERTED\n");
168: return (1);
169: }
170:
171: int
172: sysconacfail(void *eframe)
173: {
174: *(volatile u_int32_t *)AV_CLRINT = ISTATE_ACFAIL;
175: printf("WARNING: ACFAIL* ASSERTED\n");
176: return (1);
177: }
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