uk.c revision 1.52.36.3 1 1.52.36.3 mjf /* $NetBSD: uk.c,v 1.52.36.3 2008/06/02 13:23:51 mjf Exp $ */
2 1.7 cgd
3 1.23 mycroft /*-
4 1.23 mycroft * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 1.23 mycroft * All rights reserved.
6 1.23 mycroft *
7 1.23 mycroft * This code is derived from software contributed to The NetBSD Foundation
8 1.23 mycroft * by Charles M. Hannum.
9 1.5 mycroft *
10 1.5 mycroft * Redistribution and use in source and binary forms, with or without
11 1.5 mycroft * modification, are permitted provided that the following conditions
12 1.5 mycroft * are met:
13 1.5 mycroft * 1. Redistributions of source code must retain the above copyright
14 1.5 mycroft * notice, this list of conditions and the following disclaimer.
15 1.5 mycroft * 2. Redistributions in binary form must reproduce the above copyright
16 1.5 mycroft * notice, this list of conditions and the following disclaimer in the
17 1.5 mycroft * documentation and/or other materials provided with the distribution.
18 1.5 mycroft *
19 1.23 mycroft * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.23 mycroft * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.23 mycroft * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.23 mycroft * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.23 mycroft * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.23 mycroft * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.23 mycroft * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.23 mycroft * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.23 mycroft * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.23 mycroft * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.23 mycroft * POSSIBILITY OF SUCH DAMAGE.
30 1.5 mycroft */
31 1.5 mycroft
32 1.20 enami /*
33 1.1 mycroft * Dummy driver for a device we can't identify.
34 1.5 mycroft * Originally by Julian Elischer (julian (at) tfs.com)
35 1.1 mycroft */
36 1.31 lukem
37 1.31 lukem #include <sys/cdefs.h>
38 1.52.36.3 mjf __KERNEL_RCSID(0, "$NetBSD: uk.c,v 1.52.36.3 2008/06/02 13:23:51 mjf Exp $");
39 1.1 mycroft
40 1.1 mycroft #include <sys/param.h>
41 1.16 christos #include <sys/systm.h>
42 1.16 christos
43 1.1 mycroft #include <sys/errno.h>
44 1.1 mycroft #include <sys/ioctl.h>
45 1.4 mycroft #include <sys/device.h>
46 1.16 christos #include <sys/conf.h>
47 1.28 augustss #include <sys/vnode.h>
48 1.2 mycroft
49 1.19 bouyer #include <dev/scsipi/scsi_all.h>
50 1.19 bouyer #include <dev/scsipi/scsipi_all.h>
51 1.19 bouyer #include <dev/scsipi/scsiconf.h>
52 1.2 mycroft
53 1.4 mycroft #define UKUNIT(z) (minor(z))
54 1.4 mycroft
55 1.12 mycroft struct uk_softc {
56 1.4 mycroft struct device sc_dev;
57 1.4 mycroft
58 1.30 bouyer struct scsipi_periph *sc_periph; /* all the inter level info */
59 1.4 mycroft };
60 1.4 mycroft
61 1.42 thorpej static int ukmatch(struct device *, struct cfdata *, void *);
62 1.42 thorpej static void ukattach(struct device *, struct device *, void *);
63 1.42 thorpej static int ukactivate(struct device *, enum devact);
64 1.42 thorpej static int ukdetach(struct device *, int);
65 1.4 mycroft
66 1.30 bouyer
67 1.41 mycroft CFATTACH_DECL(uk, sizeof(struct uk_softc), ukmatch, ukattach, ukdetach,
68 1.41 mycroft ukactivate);
69 1.15 thorpej
70 1.21 thorpej extern struct cfdriver uk_cd;
71 1.1 mycroft
72 1.42 thorpej static dev_type_open(ukopen);
73 1.42 thorpej static dev_type_close(ukclose);
74 1.42 thorpej static dev_type_ioctl(ukioctl);
75 1.34 gehenna
76 1.34 gehenna const struct cdevsw uk_cdevsw = {
77 1.34 gehenna ukopen, ukclose, noread, nowrite, ukioctl,
78 1.49 christos nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
79 1.34 gehenna };
80 1.16 christos
81 1.42 thorpej static int
82 1.51 christos ukmatch(struct device *parent, struct cfdata *match,
83 1.51 christos void *aux)
84 1.12 mycroft {
85 1.12 mycroft
86 1.20 enami return (1);
87 1.12 mycroft }
88 1.12 mycroft
89 1.1 mycroft /*
90 1.1 mycroft * The routine called by the low level scsi routine when it discovers
91 1.1 mycroft * a device suitable for this driver.
92 1.1 mycroft */
93 1.42 thorpej static void
94 1.51 christos ukattach(struct device *parent, struct device *self, void *aux)
95 1.1 mycroft {
96 1.48 thorpej struct uk_softc *uk = device_private(self);
97 1.19 bouyer struct scsipibus_attach_args *sa = aux;
98 1.30 bouyer struct scsipi_periph *periph = sa->sa_periph;
99 1.52.36.1 mjf int maj;
100 1.1 mycroft
101 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB2, ("ukattach: "));
102 1.4 mycroft
103 1.1 mycroft /*
104 1.1 mycroft * Store information needed to contact our base driver
105 1.1 mycroft */
106 1.30 bouyer uk->sc_periph = periph;
107 1.30 bouyer periph->periph_dev = &uk->sc_dev;
108 1.1 mycroft
109 1.17 christos printf("\n");
110 1.52.36.1 mjf
111 1.52.36.1 mjf maj = cdevsw_lookup_major(&uk_cdevsw);
112 1.52.36.1 mjf device_register_name(makedev(maj, device_unit(self)), self, true,
113 1.52.36.1 mjf DEV_OTHER, device_xname(self));
114 1.28 augustss }
115 1.28 augustss
116 1.42 thorpej static int
117 1.51 christos ukactivate(struct device *self, enum devact act)
118 1.28 augustss {
119 1.28 augustss int rv = 0;
120 1.45 perry
121 1.28 augustss switch (act) {
122 1.28 augustss case DVACT_ACTIVATE:
123 1.28 augustss rv = EOPNOTSUPP;
124 1.28 augustss break;
125 1.45 perry
126 1.28 augustss case DVACT_DEACTIVATE:
127 1.28 augustss /*
128 1.28 augustss * Nothing to do; we key off the device's DVF_ACTIVE.
129 1.28 augustss */
130 1.28 augustss break;
131 1.28 augustss }
132 1.28 augustss return (rv);
133 1.28 augustss }
134 1.45 perry
135 1.42 thorpej static int
136 1.51 christos ukdetach(struct device *self, int flags)
137 1.28 augustss {
138 1.48 thorpej /*struct uk_softc *uk = device_private(self);*/
139 1.28 augustss int cmaj, mn;
140 1.45 perry
141 1.52.36.2 mjf device_deregister_all(self);
142 1.52.36.1 mjf
143 1.28 augustss /* locate the major number */
144 1.34 gehenna cmaj = cdevsw_lookup_major(&uk_cdevsw);
145 1.45 perry
146 1.28 augustss /* Nuke the vnodes for any open instances */
147 1.47 thorpej mn = device_unit(self);
148 1.28 augustss vdevgone(cmaj, mn, mn, VCHR);
149 1.45 perry
150 1.28 augustss return (0);
151 1.1 mycroft }
152 1.1 mycroft
153 1.1 mycroft /*
154 1.4 mycroft * open the device.
155 1.1 mycroft */
156 1.42 thorpej static int
157 1.51 christos ukopen(dev_t dev, int flag, int fmt, struct lwp *l)
158 1.1 mycroft {
159 1.26 thorpej int unit, error;
160 1.12 mycroft struct uk_softc *uk;
161 1.30 bouyer struct scsipi_periph *periph;
162 1.30 bouyer struct scsipi_adapter *adapt;
163 1.1 mycroft
164 1.4 mycroft unit = UKUNIT(dev);
165 1.15 thorpej if (unit >= uk_cd.cd_ndevs)
166 1.20 enami return (ENXIO);
167 1.15 thorpej uk = uk_cd.cd_devs[unit];
168 1.20 enami if (uk == NULL)
169 1.20 enami return (ENXIO);
170 1.20 enami
171 1.30 bouyer periph = uk->sc_periph;
172 1.30 bouyer adapt = periph->periph_channel->chan_adapter;
173 1.4 mycroft
174 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB1,
175 1.20 enami ("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit,
176 1.20 enami uk_cd.cd_ndevs));
177 1.11 mycroft
178 1.1 mycroft /*
179 1.1 mycroft * Only allow one at a time
180 1.1 mycroft */
181 1.30 bouyer if (periph->periph_flags & PERIPH_OPEN) {
182 1.52.36.3 mjf aprint_error_dev(&uk->sc_dev, "already open\n");
183 1.20 enami return (EBUSY);
184 1.1 mycroft }
185 1.4 mycroft
186 1.30 bouyer if ((error = scsipi_adapter_addref(adapt)) != 0)
187 1.26 thorpej return (error);
188 1.30 bouyer periph->periph_flags |= PERIPH_OPEN;
189 1.4 mycroft
190 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
191 1.20 enami return (0);
192 1.1 mycroft }
193 1.1 mycroft
194 1.1 mycroft /*
195 1.1 mycroft * close the device.. only called if we are the LAST
196 1.1 mycroft * occurence of an open device
197 1.1 mycroft */
198 1.42 thorpej static int
199 1.51 christos ukclose(dev_t dev, int flag, int fmt, struct lwp *l)
200 1.1 mycroft {
201 1.15 thorpej struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)];
202 1.30 bouyer struct scsipi_periph *periph = uk->sc_periph;
203 1.30 bouyer struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
204 1.1 mycroft
205 1.30 bouyer SC_DEBUG(uk->sc_periph, SCSIPI_DB1, ("closing\n"));
206 1.27 thorpej
207 1.30 bouyer scsipi_wait_drain(periph);
208 1.27 thorpej
209 1.30 bouyer scsipi_adapter_delref(adapt);
210 1.30 bouyer periph->periph_flags &= ~PERIPH_OPEN;
211 1.11 mycroft
212 1.20 enami return (0);
213 1.1 mycroft }
214 1.1 mycroft
215 1.1 mycroft /*
216 1.1 mycroft * Perform special action on behalf of the user
217 1.1 mycroft * Only does generic scsi ioctls.
218 1.1 mycroft */
219 1.42 thorpej static int
220 1.52 christos ukioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
221 1.1 mycroft {
222 1.30 bouyer register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)];
223 1.1 mycroft
224 1.46 christos return (scsipi_do_ioctl(uk->sc_periph, dev, cmd, addr, flag, l));
225 1.1 mycroft }
226