1/*-
2 * Copyright (c) 2011-2012 Stefan Bethke.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/dev/etherswitch/etherswitch.c 312005 2017-01-13 03:08:05Z loos $
27 */
28
29#include <sys/param.h>
30#include <sys/bus.h>
31#include <sys/conf.h>
32#include <sys/fcntl.h>
33#include <sys/kernel.h>
34#include <sys/malloc.h>
35#include <sys/module.h>
36#include <sys/socket.h>
37#include <sys/sx.h>
38#include <sys/systm.h>
39#include <sys/uio.h>
40
41#include <net/if.h>
42
43#include <dev/etherswitch/etherswitch.h>
44
45#include "etherswitch_if.h"
46
47struct etherswitch_softc {
48	device_t sc_dev;
49	struct cdev *sc_devnode;
50};
51
52static int etherswitch_probe(device_t);
53static int etherswitch_attach(device_t);
54static int etherswitch_detach(device_t);
55static void etherswitch_identify(driver_t *driver, device_t parent);
56
57devclass_t etherswitch_devclass;
58
59static device_method_t etherswitch_methods[] = {
60	/* device interface */
61	DEVMETHOD(device_identify,	etherswitch_identify),
62	DEVMETHOD(device_probe,		etherswitch_probe),
63	DEVMETHOD(device_attach,	etherswitch_attach),
64	DEVMETHOD(device_detach,	etherswitch_detach),
65
66	DEVMETHOD_END
67};
68
69driver_t etherswitch_driver = {
70	"etherswitch",
71	etherswitch_methods,
72	sizeof(struct etherswitch_softc),
73};
74
75static	d_ioctl_t	etherswitchioctl;
76
77static struct cdevsw etherswitch_cdevsw = {
78	.d_version =	D_VERSION,
79	.d_flags =	D_TRACKCLOSE,
80	.d_ioctl =	etherswitchioctl,
81	.d_name =	"etherswitch",
82};
83
84static void
85etherswitch_identify(driver_t *driver, device_t parent)
86{
87	if (device_find_child(parent, "etherswitch", -1) == NULL)
88		BUS_ADD_CHILD(parent, 0, "etherswitch", -1);
89}
90
91static int
92etherswitch_probe(device_t dev)
93{
94	device_set_desc(dev, "Switch controller");
95
96	return (0);
97}
98
99static int
100etherswitch_attach(device_t dev)
101{
102	int err;
103	struct etherswitch_softc *sc;
104	struct make_dev_args devargs;
105
106	sc = device_get_softc(dev);
107	sc->sc_dev = dev;
108	make_dev_args_init(&devargs);
109	devargs.mda_devsw = &etherswitch_cdevsw;
110	devargs.mda_uid = UID_ROOT;
111	devargs.mda_gid = GID_WHEEL;
112	devargs.mda_mode = 0600;
113	devargs.mda_si_drv1 = sc;
114	err = make_dev_s(&devargs, &sc->sc_devnode, "etherswitch%d",
115	    device_get_unit(dev));
116	if (err != 0) {
117		device_printf(dev, "failed to create character device\n");
118		return (ENXIO);
119	}
120
121	return (0);
122}
123
124static int
125etherswitch_detach(device_t dev)
126{
127	struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
128
129	if (sc->sc_devnode)
130		destroy_dev(sc->sc_devnode);
131
132	return (0);
133}
134
135static int
136etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
137{
138	struct etherswitch_softc *sc = cdev->si_drv1;
139	device_t dev = sc->sc_dev;
140	device_t etherswitch = device_get_parent(dev);
141	etherswitch_conf_t conf;
142	etherswitch_info_t *info;
143	etherswitch_reg_t *reg;
144	etherswitch_phyreg_t *phyreg;
145	int error = 0;
146
147	switch (cmd) {
148	case IOETHERSWITCHGETINFO:
149		info = ETHERSWITCH_GETINFO(etherswitch);
150		bcopy(info, data, sizeof(etherswitch_info_t));
151		break;
152
153	case IOETHERSWITCHGETREG:
154		reg = (etherswitch_reg_t *)data;
155		ETHERSWITCH_LOCK(etherswitch);
156		reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
157		ETHERSWITCH_UNLOCK(etherswitch);
158		break;
159
160	case IOETHERSWITCHSETREG:
161		reg = (etherswitch_reg_t *)data;
162		ETHERSWITCH_LOCK(etherswitch);
163		error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
164		ETHERSWITCH_UNLOCK(etherswitch);
165		break;
166
167	case IOETHERSWITCHGETPORT:
168		error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
169		break;
170
171	case IOETHERSWITCHSETPORT:
172		error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
173		break;
174
175	case IOETHERSWITCHGETVLANGROUP:
176		error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
177		break;
178
179	case IOETHERSWITCHSETVLANGROUP:
180		error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
181		break;
182
183	case IOETHERSWITCHGETPHYREG:
184		phyreg = (etherswitch_phyreg_t *)data;
185		phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
186		break;
187
188	case IOETHERSWITCHSETPHYREG:
189		phyreg = (etherswitch_phyreg_t *)data;
190		error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
191		break;
192
193	case IOETHERSWITCHGETCONF:
194		bzero(&conf, sizeof(etherswitch_conf_t));
195		error = ETHERSWITCH_GETCONF(etherswitch, &conf);
196		bcopy(&conf, data, sizeof(etherswitch_conf_t));
197		break;
198
199	case IOETHERSWITCHSETCONF:
200		error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
201		break;
202
203	default:
204		error = ENOTTY;
205	}
206
207	return (error);
208}
209
210MODULE_VERSION(etherswitch, 1);
211