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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* $OpenBSD: uk.c,v 1.25 2020/08/11 15:23:57 krw Exp $ */
/* $NetBSD: uk.c,v 1.15 1996/03/17 00:59:57 thorpej Exp $ */
/*
* Copyright (c) 1994 Charles Hannum. 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 by Charles Hannum.
* 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.
*/
/*
* Dummy driver for a device we can't identify.
* Originally by Julian Elischer (julian@tfs.com)
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/vnode.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_debug.h>
#include <scsi/scsiconf.h>
#define UKUNIT(z) (minor(z))
struct uk_softc {
struct device sc_dev;
struct scsi_link *sc_link; /* all the inter level info */
};
int ukmatch(struct device *, void *, void *);
void ukattach(struct device *, struct device *, void *);
int ukdetach(struct device *, int);
struct cfattach uk_ca = {
sizeof(struct uk_softc), ukmatch, ukattach, ukdetach
};
struct cfdriver uk_cd = {
NULL, "uk", DV_DULL
};
#define uklookup(unit) (struct uk_softc *)device_lookup(&uk_cd, (unit))
int
ukmatch(struct device *parent, void *match, void *aux)
{
return 1;
}
/*
* The routine called by the low level scsi routine when it discovers
* a device suitable for this driver.
*/
void
ukattach(struct device *parent, struct device *self, void *aux)
{
struct uk_softc *sc = (void *)self;
struct scsi_attach_args *sa = aux;
struct scsi_link *link = sa->sa_sc_link;
SC_DEBUG(link, SDEV_DB2, ("ukattach: "));
/* Store information needed to contact our base driver. */
sc->sc_link = link;
link->device_softc = sc;
link->openings = 1;
printf("\n");
}
int
ukdetach(struct device *self, int flags)
{
int bmaj, cmaj, mn;
mn = self->dv_unit;
for (bmaj = 0; bmaj < nblkdev; bmaj++)
if (bdevsw[bmaj].d_open == ukopen)
vdevgone(bmaj, mn, mn, VBLK);
for (cmaj = 0; cmaj < nchrdev; cmaj++)
if (cdevsw[cmaj].d_open == ukopen)
vdevgone(cmaj, mn, mn, VCHR);
return 0;
}
/*
* Open the device.
*/
int
ukopen(dev_t dev, int flag, int fmt, struct proc *p)
{
struct uk_softc *sc;
struct scsi_link *link;
int unit;
unit = UKUNIT(dev);
sc = uklookup(unit);
if (sc == NULL)
return ENXIO;
link = sc->sc_link;
SC_DEBUG(link, SDEV_DB1, ("ukopen: dev=0x%x (unit %d (of %d))\n",
dev, unit, uk_cd.cd_ndevs));
/* Only allow one at a time. */
if (ISSET(link->flags, SDEV_OPEN)) {
device_unref(&sc->sc_dev);
return EBUSY;
}
SET(link->flags, SDEV_OPEN);
SC_DEBUG(link, SDEV_DB3, ("open complete\n"));
device_unref(&sc->sc_dev);
return 0;
}
/*
* Close the device. Called only if we are the LAST
* occurrence of an open device.
*/
int
ukclose(dev_t dev, int flag, int fmt, struct proc *p)
{
struct uk_softc *sc;
sc = uklookup(UKUNIT(dev));
if (sc == NULL)
return ENXIO;
SC_DEBUG(sc->sc_link, SDEV_DB1, ("closing\n"));
CLR(sc->sc_link->flags, SDEV_OPEN);
device_unref(&sc->sc_dev);
return 0;
}
/*
* Perform special action on behalf of the user
* Only does generic scsi ioctls.
*/
int
ukioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct uk_softc *sc;
int rv;
sc = uklookup(UKUNIT(dev));
if (sc == NULL)
return ENXIO;
rv = scsi_do_ioctl(sc->sc_link, cmd, addr, flag);
device_unref(&sc->sc_dev);
return rv;
}
|
