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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*-
* Copyright (c) 2005, M. Warner Losh
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/pccard/pccardreg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/pccard/pccardvarp.h>
#include <dev/pccard/pccard_cis.h>
static d_open_t pccard_open;
static d_close_t pccard_close;
static d_read_t pccard_read;
static d_ioctl_t pccard_ioctl;
static struct cdevsw pccard_cdevsw = {
.d_version = D_VERSION,
.d_open = pccard_open,
.d_close = pccard_close,
.d_read = pccard_read,
.d_ioctl = pccard_ioctl,
.d_name = "pccard"
};
int
pccard_device_create(struct pccard_softc *sc)
{
uint32_t minor;
minor = device_get_unit(sc->dev) << 16;
sc->cisdev = make_dev(&pccard_cdevsw, minor, 0, 0, 0666,
"pccard%u.cis", device_get_unit(sc->dev));
sc->cisdev->si_drv1 = sc;
return (0);
}
int
pccard_device_destroy(struct pccard_softc *sc)
{
if (sc->cisdev)
destroy_dev(sc->cisdev);
return (0);
}
static int
pccard_build_cis(const struct pccard_tuple *tuple, void *argp)
{
struct cis_buffer *cis;
int i;
uint8_t ch;
cis = (struct cis_buffer *)argp;
/*
* CISTPL_END is a special case, it has no length field.
*/
if (tuple->code == CISTPL_END) {
if (cis->len + 1 > sizeof(cis->buffer))
return (ENOSPC);
cis->buffer[cis->len++] = tuple->code;
return (0);
}
if (cis->len + 2 + tuple->length > sizeof(cis->buffer))
return (ENOSPC);
cis->buffer[cis->len++] = tuple->code;
cis->buffer[cis->len++] = tuple->length;
for (i = 0; i < tuple->length; i++) {
ch = pccard_tuple_read_1(tuple, i);
cis->buffer[cis->len++] = ch;
}
return (0);
}
static int
pccard_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
{
device_t parent, child;
device_t *kids;
int cnt, err;
struct pccard_softc *sc;
sc = dev->si_drv1;
if (sc->cis_open)
return (EBUSY);
parent = sc->dev;
err = device_get_children(parent, &kids, &cnt);
if (err)
return err;
if (cnt == 0) {
free(kids, M_TEMP);
sc->cis_open++;
sc->cis = NULL;
return (0);
}
child = kids[0];
free(kids, M_TEMP);
sc->cis = malloc(sizeof(*sc->cis), M_TEMP, M_ZERO | M_WAITOK);
err = pccard_scan_cis(parent, child, pccard_build_cis, sc->cis);
if (err) {
free(sc->cis, M_TEMP);
sc->cis = NULL;
return (err);
}
sc->cis_open++;
return (0);
}
static int
pccard_close(struct cdev *dev, int fflags, int devtype, struct thread *td)
{
struct pccard_softc *sc;
sc = dev->si_drv1;
free(sc->cis, M_TEMP);
sc->cis = NULL;
sc->cis_open = 0;
return (0);
}
static int
pccard_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
struct thread *td)
{
return (ENOTTY);
}
static int
pccard_read(struct cdev *dev, struct uio *uio, int ioflag)
{
struct pccard_softc *sc;
sc = dev->si_drv1;
/* EOF */
if (sc->cis == NULL || uio->uio_offset > sc->cis->len)
return (0);
return (uiomove(sc->cis->buffer + uio->uio_offset,
MIN(uio->uio_resid, sc->cis->len - uio->uio_offset), uio));
}
|
