uk.c revision 1.30.4.2 1 1.30.4.2 fvdl /* $NetBSD: uk.c,v 1.30.4.2 2001/09/26 15:28:19 fvdl 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 * 3. All advertising materials mentioning features or use of this software
19 1.5 mycroft * must display the following acknowledgement:
20 1.23 mycroft * This product includes software developed by the NetBSD
21 1.23 mycroft * Foundation, Inc. and its contributors.
22 1.23 mycroft * 4. Neither the name of The NetBSD Foundation nor the names of its
23 1.23 mycroft * contributors may be used to endorse or promote products derived
24 1.23 mycroft * from this software without specific prior written permission.
25 1.5 mycroft *
26 1.23 mycroft * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 1.23 mycroft * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 1.23 mycroft * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 1.23 mycroft * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 1.23 mycroft * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 1.23 mycroft * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 1.23 mycroft * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 1.23 mycroft * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 1.23 mycroft * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 1.23 mycroft * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 1.23 mycroft * POSSIBILITY OF SUCH DAMAGE.
37 1.5 mycroft */
38 1.5 mycroft
39 1.20 enami /*
40 1.1 mycroft * Dummy driver for a device we can't identify.
41 1.5 mycroft * Originally by Julian Elischer (julian (at) tfs.com)
42 1.1 mycroft */
43 1.1 mycroft
44 1.1 mycroft #include <sys/types.h>
45 1.1 mycroft #include <sys/param.h>
46 1.16 christos #include <sys/systm.h>
47 1.16 christos
48 1.1 mycroft #include <sys/errno.h>
49 1.1 mycroft #include <sys/ioctl.h>
50 1.4 mycroft #include <sys/device.h>
51 1.16 christos #include <sys/conf.h>
52 1.28 augustss #include <sys/vnode.h>
53 1.2 mycroft
54 1.30.4.1 thorpej #include <miscfs/specfs/specdev.h>
55 1.30.4.1 thorpej
56 1.19 bouyer #include <dev/scsipi/scsi_all.h>
57 1.19 bouyer #include <dev/scsipi/scsipi_all.h>
58 1.19 bouyer #include <dev/scsipi/scsiconf.h>
59 1.2 mycroft
60 1.4 mycroft #define UKUNIT(z) (minor(z))
61 1.4 mycroft
62 1.12 mycroft struct uk_softc {
63 1.4 mycroft struct device sc_dev;
64 1.4 mycroft
65 1.30 bouyer struct scsipi_periph *sc_periph; /* all the inter level info */
66 1.4 mycroft };
67 1.4 mycroft
68 1.18 cgd int ukmatch __P((struct device *, struct cfdata *, void *));
69 1.4 mycroft void ukattach __P((struct device *, struct device *, void *));
70 1.28 augustss int ukactivate __P((struct device *, enum devact));
71 1.28 augustss int ukdetach __P((struct device *, int));
72 1.4 mycroft
73 1.30 bouyer
74 1.25 bouyer struct cfattach uk_scsibus_ca = {
75 1.28 augustss sizeof(struct uk_softc), ukmatch, ukattach, ukdetach, ukactivate,
76 1.25 bouyer };
77 1.25 bouyer struct cfattach uk_atapibus_ca = {
78 1.28 augustss sizeof(struct uk_softc), ukmatch, ukattach, ukdetach, ukactivate,
79 1.15 thorpej };
80 1.15 thorpej
81 1.21 thorpej extern struct cfdriver uk_cd;
82 1.1 mycroft
83 1.16 christos cdev_decl(uk);
84 1.16 christos
85 1.12 mycroft int
86 1.12 mycroft ukmatch(parent, match, aux)
87 1.12 mycroft struct device *parent;
88 1.18 cgd struct cfdata *match;
89 1.18 cgd void *aux;
90 1.12 mycroft {
91 1.12 mycroft
92 1.20 enami return (1);
93 1.12 mycroft }
94 1.12 mycroft
95 1.1 mycroft /*
96 1.1 mycroft * The routine called by the low level scsi routine when it discovers
97 1.1 mycroft * a device suitable for this driver.
98 1.1 mycroft */
99 1.4 mycroft void
100 1.4 mycroft ukattach(parent, self, aux)
101 1.4 mycroft struct device *parent, *self;
102 1.4 mycroft void *aux;
103 1.1 mycroft {
104 1.12 mycroft struct uk_softc *uk = (void *)self;
105 1.19 bouyer struct scsipibus_attach_args *sa = aux;
106 1.30 bouyer struct scsipi_periph *periph = sa->sa_periph;
107 1.1 mycroft
108 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB2, ("ukattach: "));
109 1.4 mycroft
110 1.1 mycroft /*
111 1.1 mycroft * Store information needed to contact our base driver
112 1.1 mycroft */
113 1.30 bouyer uk->sc_periph = periph;
114 1.30 bouyer periph->periph_dev = &uk->sc_dev;
115 1.1 mycroft
116 1.17 christos printf("\n");
117 1.17 christos printf("%s: unknown device\n", uk->sc_dev.dv_xname);
118 1.28 augustss }
119 1.28 augustss
120 1.28 augustss int
121 1.28 augustss ukactivate(self, act)
122 1.28 augustss struct device *self;
123 1.28 augustss enum devact act;
124 1.28 augustss {
125 1.28 augustss int rv = 0;
126 1.30 bouyer
127 1.28 augustss switch (act) {
128 1.28 augustss case DVACT_ACTIVATE:
129 1.28 augustss rv = EOPNOTSUPP;
130 1.28 augustss break;
131 1.30 bouyer
132 1.28 augustss case DVACT_DEACTIVATE:
133 1.28 augustss /*
134 1.28 augustss * Nothing to do; we key off the device's DVF_ACTIVE.
135 1.28 augustss */
136 1.28 augustss break;
137 1.28 augustss }
138 1.28 augustss return (rv);
139 1.28 augustss }
140 1.30 bouyer
141 1.28 augustss int
142 1.28 augustss ukdetach(self, flags)
143 1.28 augustss struct device *self;
144 1.28 augustss int flags;
145 1.28 augustss {
146 1.28 augustss /*struct uk_softc *uk = (struct uk_softc *) self;*/
147 1.28 augustss int cmaj, mn;
148 1.30 bouyer
149 1.28 augustss /* locate the major number */
150 1.28 augustss for (cmaj = 0; cmaj <= nchrdev; cmaj++)
151 1.28 augustss if (cdevsw[cmaj].d_open == ukopen)
152 1.28 augustss break;
153 1.30 bouyer
154 1.28 augustss /* Nuke the vnodes for any open instances */
155 1.28 augustss mn = self->dv_unit;
156 1.28 augustss vdevgone(cmaj, mn, mn, VCHR);
157 1.30 bouyer
158 1.28 augustss return (0);
159 1.1 mycroft }
160 1.1 mycroft
161 1.30 bouyer
162 1.30 bouyer
163 1.1 mycroft /*
164 1.4 mycroft * open the device.
165 1.1 mycroft */
166 1.4 mycroft int
167 1.30.4.1 thorpej ukopen(devvp, flag, fmt, p)
168 1.30.4.1 thorpej struct vnode *devvp;
169 1.16 christos int flag, fmt;
170 1.16 christos struct proc *p;
171 1.1 mycroft {
172 1.26 thorpej int unit, error;
173 1.12 mycroft struct uk_softc *uk;
174 1.30 bouyer struct scsipi_periph *periph;
175 1.30 bouyer struct scsipi_adapter *adapt;
176 1.30.4.2 fvdl dev_t rdev;
177 1.1 mycroft
178 1.30.4.2 fvdl rdev = vdev_rdev(devvp);
179 1.30.4.2 fvdl unit = UKUNIT(rdev);
180 1.15 thorpej if (unit >= uk_cd.cd_ndevs)
181 1.20 enami return (ENXIO);
182 1.15 thorpej uk = uk_cd.cd_devs[unit];
183 1.20 enami if (uk == NULL)
184 1.20 enami return (ENXIO);
185 1.20 enami
186 1.30.4.2 fvdl vdev_setprivdata(devvp, uk);
187 1.30.4.1 thorpej
188 1.30 bouyer periph = uk->sc_periph;
189 1.30 bouyer adapt = periph->periph_channel->chan_adapter;
190 1.4 mycroft
191 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB1,
192 1.30.4.2 fvdl ("ukopen: dev=0x%x (unit %d (of %d))\n", rdev, unit,
193 1.20 enami uk_cd.cd_ndevs));
194 1.11 mycroft
195 1.1 mycroft /*
196 1.1 mycroft * Only allow one at a time
197 1.1 mycroft */
198 1.30 bouyer if (periph->periph_flags & PERIPH_OPEN) {
199 1.17 christos printf("%s: already open\n", uk->sc_dev.dv_xname);
200 1.20 enami return (EBUSY);
201 1.1 mycroft }
202 1.4 mycroft
203 1.30 bouyer if ((error = scsipi_adapter_addref(adapt)) != 0)
204 1.26 thorpej return (error);
205 1.30 bouyer periph->periph_flags |= PERIPH_OPEN;
206 1.4 mycroft
207 1.30 bouyer SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
208 1.20 enami return (0);
209 1.1 mycroft }
210 1.1 mycroft
211 1.1 mycroft /*
212 1.1 mycroft * close the device.. only called if we are the LAST
213 1.1 mycroft * occurence of an open device
214 1.1 mycroft */
215 1.4 mycroft int
216 1.30.4.1 thorpej ukclose(devvp, flag, fmt, p)
217 1.30.4.1 thorpej struct vnode *devvp;
218 1.16 christos int flag, fmt;
219 1.16 christos struct proc *p;
220 1.1 mycroft {
221 1.30.4.2 fvdl struct uk_softc *uk;
222 1.30.4.2 fvdl struct scsipi_periph *periph;
223 1.30.4.2 fvdl struct scsipi_adapter *adapt;
224 1.30.4.2 fvdl
225 1.30.4.2 fvdl uk = vdev_privdata(devvp);
226 1.30.4.2 fvdl periph = uk->sc_periph;
227 1.30.4.2 fvdl adapt = periph->periph_channel->chan_adapter;
228 1.1 mycroft
229 1.30 bouyer SC_DEBUG(uk->sc_periph, SCSIPI_DB1, ("closing\n"));
230 1.27 thorpej
231 1.30 bouyer scsipi_wait_drain(periph);
232 1.27 thorpej
233 1.30 bouyer scsipi_adapter_delref(adapt);
234 1.30 bouyer periph->periph_flags &= ~PERIPH_OPEN;
235 1.11 mycroft
236 1.20 enami return (0);
237 1.1 mycroft }
238 1.1 mycroft
239 1.1 mycroft /*
240 1.1 mycroft * Perform special action on behalf of the user
241 1.1 mycroft * Only does generic scsi ioctls.
242 1.1 mycroft */
243 1.4 mycroft int
244 1.30.4.1 thorpej ukioctl(devvp, cmd, addr, flag, p)
245 1.30.4.1 thorpej struct vnode *devvp;
246 1.9 cgd u_long cmd;
247 1.4 mycroft caddr_t addr;
248 1.4 mycroft int flag;
249 1.12 mycroft struct proc *p;
250 1.1 mycroft {
251 1.30.4.2 fvdl struct uk_softc *uk;
252 1.30.4.2 fvdl
253 1.30.4.2 fvdl uk = vdev_privdata(devvp);
254 1.1 mycroft
255 1.30.4.1 thorpej return (scsipi_do_ioctl(uk->sc_periph, devvp, cmd, addr, flag, p));
256 1.1 mycroft }
257