1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/* $OpenBSD: fooip.c,v 1.5 2002/03/14 01:26:37 millert Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Theo de Raadt for Willowglen Singapore.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* A sample framework for writing an IP module driver.
*/
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <mvme68k/dev/ipicreg.h>
struct fooipregs {
volatile u_char fooip_reg1;
volatile u_char fooip_vec;
};
struct fooipsoftc {
struct device sc_dev;
struct ipicsoftc *sc_ipicsc;
struct intrhand sc_ih;
int sc_slot;
struct fooipregs *sc_regs;
};
void fooipattach(struct device *, struct device *, void *);
int fooipmatch(struct device *, void *, void *);
struct cfattach fooip_ca = {
sizeof(struct fooipsoftc), fooipmatch, fooipattach
};
struct cfdriver fooip_cd = {
NULL, "fooip", DV_DULL, 0
};
int fooipintr(void *);
int
fooipmatch(parent, cf, args)
struct device *parent;
void *cf;
void *args;
{
return (1);
}
void
fooipattach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct fooipsoftc *sc = (struct fooipsoftc *)self;
struct confargs *ca = args;
sc->sc_ipicsc = (struct ipicsoftc *)ca->ca_master;
sc->sc_regs = (struct fooipregs *)(ca->ca_vaddr +
IPIC_IP_REGOFFSET);
sc->sc_slot = ca->ca_offset;
/* this device uses only one interrupt */
sc->sc_ih.ih_fn = fooipintr;
sc->sc_ih.ih_arg = sc;
sc->sc_ih.ih_ipl = ca->ca_ipl;
ipicintr_establish(ca->ca_vec, &sc->sc_ih);
sc->sc_regs->fooip_vec = ca->ca_vec;
sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] = ca->ca_ipl |
IPIC_IRQ_ICLR | IPIC_IRQ_IEN;
printf("\n");
}
int
fooipintr(arg)
void *arg;
{
struct fooipsoftc *sc = arg;
if (sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] & IPIC_IRQ_INT) {
/* clear interrupt on device */
return (1);
}
return (0);
}
|
