etherswitch.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011-2012 Stefan Bethke.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/dev/etherswitch/etherswitch.c 330897 2018-03-14 03:19:51Z eadler $
29 */
30
31#include <sys/param.h>
32#include <sys/bus.h>
33#include <sys/conf.h>
34#include <sys/fcntl.h>
35#include <sys/kernel.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38#include <sys/socket.h>
39#include <sys/sx.h>
40#include <sys/systm.h>
41#include <sys/uio.h>
42
43#include <net/if.h>
44
45#include <dev/etherswitch/etherswitch.h>
46
47#include "etherswitch_if.h"
48
49struct etherswitch_softc {
50	device_t sc_dev;
51	struct cdev *sc_devnode;
52};
53
54static int etherswitch_probe(device_t);
55static int etherswitch_attach(device_t);
56static int etherswitch_detach(device_t);
57static void etherswitch_identify(driver_t *driver, device_t parent);
58
59devclass_t etherswitch_devclass;
60
61static device_method_t etherswitch_methods[] = {
62	/* device interface */
63	DEVMETHOD(device_identify,	etherswitch_identify),
64	DEVMETHOD(device_probe,		etherswitch_probe),
65	DEVMETHOD(device_attach,	etherswitch_attach),
66	DEVMETHOD(device_detach,	etherswitch_detach),
67
68	DEVMETHOD_END
69};
70
71driver_t etherswitch_driver = {
72	"etherswitch",
73	etherswitch_methods,
74	sizeof(struct etherswitch_softc),
75};
76
77static	d_ioctl_t	etherswitchioctl;
78
79static struct cdevsw etherswitch_cdevsw = {
80	.d_version =	D_VERSION,
81	.d_flags =	D_TRACKCLOSE,
82	.d_ioctl =	etherswitchioctl,
83	.d_name =	"etherswitch",
84};
85
86static void
87etherswitch_identify(driver_t *driver, device_t parent)
88{
89	if (device_find_child(parent, "etherswitch", -1) == NULL)
90		BUS_ADD_CHILD(parent, 0, "etherswitch", -1);
91}
92
93static int
94etherswitch_probe(device_t dev)
95{
96	device_set_desc(dev, "Switch controller");
97
98	return (0);
99}
100
101static int
102etherswitch_attach(device_t dev)
103{
104	int err;
105	struct etherswitch_softc *sc;
106	struct make_dev_args devargs;
107
108	sc = device_get_softc(dev);
109	sc->sc_dev = dev;
110	make_dev_args_init(&devargs);
111	devargs.mda_devsw = &etherswitch_cdevsw;
112	devargs.mda_uid = UID_ROOT;
113	devargs.mda_gid = GID_WHEEL;
114	devargs.mda_mode = 0600;
115	devargs.mda_si_drv1 = sc;
116	err = make_dev_s(&devargs, &sc->sc_devnode, "etherswitch%d",
117	    device_get_unit(dev));
118	if (err != 0) {
119		device_printf(dev, "failed to create character device\n");
120		return (ENXIO);
121	}
122
123	return (0);
124}
125
126static int
127etherswitch_detach(device_t dev)
128{
129	struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
130
131	if (sc->sc_devnode)
132		destroy_dev(sc->sc_devnode);
133
134	return (0);
135}
136
137static int
138etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
139{
140	struct etherswitch_softc *sc = cdev->si_drv1;
141	device_t dev = sc->sc_dev;
142	device_t etherswitch = device_get_parent(dev);
143	etherswitch_conf_t conf;
144	etherswitch_info_t *info;
145	etherswitch_reg_t *reg;
146	etherswitch_phyreg_t *phyreg;
147	int error = 0;
148
149	switch (cmd) {
150	case IOETHERSWITCHGETINFO:
151		info = ETHERSWITCH_GETINFO(etherswitch);
152		bcopy(info, data, sizeof(etherswitch_info_t));
153		break;
154
155	case IOETHERSWITCHGETREG:
156		reg = (etherswitch_reg_t *)data;
157		ETHERSWITCH_LOCK(etherswitch);
158		reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
159		ETHERSWITCH_UNLOCK(etherswitch);
160		break;
161
162	case IOETHERSWITCHSETREG:
163		reg = (etherswitch_reg_t *)data;
164		ETHERSWITCH_LOCK(etherswitch);
165		error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
166		ETHERSWITCH_UNLOCK(etherswitch);
167		break;
168
169	case IOETHERSWITCHGETPORT:
170		error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
171		break;
172
173	case IOETHERSWITCHSETPORT:
174		error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
175		break;
176
177	case IOETHERSWITCHGETVLANGROUP:
178		error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
179		break;
180
181	case IOETHERSWITCHSETVLANGROUP:
182		error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
183		break;
184
185	case IOETHERSWITCHGETPHYREG:
186		phyreg = (etherswitch_phyreg_t *)data;
187		phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
188		break;
189
190	case IOETHERSWITCHSETPHYREG:
191		phyreg = (etherswitch_phyreg_t *)data;
192		error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
193		break;
194
195	case IOETHERSWITCHGETCONF:
196		bzero(&conf, sizeof(etherswitch_conf_t));
197		error = ETHERSWITCH_GETCONF(etherswitch, &conf);
198		bcopy(&conf, data, sizeof(etherswitch_conf_t));
199		break;
200
201	case IOETHERSWITCHSETCONF:
202		error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
203		break;
204
205	default:
206		error = ENOTTY;
207	}
208
209	return (error);
210}
211
212MODULE_VERSION(etherswitch, 1);
213