Annotation of sys/arch/mvme68k/dev/fooip.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: fooip.c,v 1.9 2004/07/30 22:29:44 miod Exp $ */
2:
3: /*
4: * Copyright (c) 1995 Theo de Raadt
5: * 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: * A sample framework for writing an IP module driver.
30: */
31: #include <sys/param.h>
32: #include <sys/conf.h>
33: #include <sys/ioctl.h>
34: #include <sys/proc.h>
35: #include <sys/user.h>
36: #include <sys/tty.h>
37: #include <sys/uio.h>
38: #include <sys/systm.h>
39: #include <sys/kernel.h>
40: #include <sys/syslog.h>
41: #include <sys/fcntl.h>
42: #include <sys/device.h>
43: #include <machine/autoconf.h>
44: #include <machine/cpu.h>
45: #include <mvme68k/dev/ipicreg.h>
46:
47: struct fooipregs {
48: volatile u_char fooip_reg1;
49: volatile u_char fooip_vec;
50: };
51:
52: struct fooipsoftc {
53: struct device sc_dev;
54: struct ipicsoftc *sc_ipicsc;
55: struct intrhand sc_ih;
56:
57: int sc_slot;
58: struct fooipregs *sc_regs;
59: };
60:
61: void fooipattach(struct device *, struct device *, void *);
62: int fooipmatch(struct device *, void *, void *);
63:
64: struct cfattach fooip_ca = {
65: sizeof(struct fooipsoftc), fooipmatch, fooipattach
66: };
67:
68: struct cfdriver fooip_cd = {
69: NULL, "fooip", DV_DULL
70: };
71:
72: int fooipintr(void *);
73:
74: int
75: fooipmatch(parent, cf, args)
76: struct device *parent;
77: void *cf;
78: void *args;
79: {
80: return (1);
81: }
82:
83: void
84: fooipattach(parent, self, args)
85: struct device *parent, *self;
86: void *args;
87: {
88: struct fooipsoftc *sc = (struct fooipsoftc *)self;
89: struct confargs *ca = args;
90:
91: sc->sc_ipicsc = (struct ipicsoftc *)parent;
92: sc->sc_regs = (struct fooipregs *)(ca->ca_vaddr +
93: IPIC_IP_REGOFFSET);
94: sc->sc_slot = ca->ca_offset;
95:
96: /* this device uses only one interrupt */
97: sc->sc_ih.ih_fn = fooipintr;
98: sc->sc_ih.ih_arg = sc;
99: sc->sc_ih.ih_ipl = ca->ca_ipl;
100: ipicintr_establish(ca->ca_vec, &sc->sc_ih, self->dv_xname);
101:
102: sc->sc_regs->fooip_vec = ca->ca_vec;
103: sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] = ca->ca_ipl |
104: IPIC_IRQ_ICLR | IPIC_IRQ_IEN;
105:
106: printf("\n");
107: }
108:
109: int
110: fooipintr(arg)
111: void *arg;
112: {
113: struct fooipsoftc *sc = arg;
114:
115: if (sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] & IPIC_IRQ_INT) {
116: /* clear interrupt on device */
117: return (1);
118: }
119: return (0);
120: }
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