xref: /freebsd/sys/dev/mii/ukphy.c (revision d2ce15bd43b3a1dcce08eecbff8d5d359946d972)
1 /*	$NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9  * NASA Ames Research Center, and by Frank van der Linden.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 /*-
34  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
35  *
36  * Redistribution and use in source and binary forms, with or without
37  * modification, are permitted provided that the following conditions
38  * are met:
39  * 1. Redistributions of source code must retain the above copyright
40  *    notice, this list of conditions and the following disclaimer.
41  * 2. Redistributions in binary form must reproduce the above copyright
42  *    notice, this list of conditions and the following disclaimer in the
43  *    documentation and/or other materials provided with the distribution.
44  *
45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55  */
56 
57 #include <sys/cdefs.h>
58 __FBSDID("$FreeBSD$");
59 
60 /*
61  * driver for generic unknown PHYs
62  */
63 
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/socket.h>
68 #include <sys/errno.h>
69 #include <sys/module.h>
70 #include <sys/bus.h>
71 
72 #include <net/if.h>
73 #include <net/if_media.h>
74 
75 #include <dev/mii/mii.h>
76 #include <dev/mii/miivar.h>
77 
78 #include "miibus_if.h"
79 
80 static int ukphy_probe(device_t);
81 static int ukphy_attach(device_t);
82 
83 static device_method_t ukphy_methods[] = {
84 	/* device interface */
85 	DEVMETHOD(device_probe,		ukphy_probe),
86 	DEVMETHOD(device_attach,	ukphy_attach),
87 	DEVMETHOD(device_detach,	mii_phy_detach),
88 	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
89 	DEVMETHOD_END
90 };
91 
92 static devclass_t ukphy_devclass;
93 
94 static driver_t ukphy_driver = {
95 	"ukphy",
96 	ukphy_methods,
97 	sizeof(struct mii_softc)
98 };
99 
100 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
101 
102 static int	ukphy_service(struct mii_softc *, struct mii_data *, int);
103 
104 static const struct mii_phy_funcs ukphy_funcs = {
105 	ukphy_service,
106 	ukphy_status,
107 	mii_phy_reset
108 };
109 
110 static int
111 ukphy_probe(device_t dev)
112 {
113 
114 	/*
115 	 * We know something is here, so always match at a low priority.
116 	 */
117 	device_set_desc(dev, "Generic IEEE 802.3u media interface");
118 	return (BUS_PROBE_GENERIC);
119 }
120 
121 static int
122 ukphy_attach(device_t dev)
123 {
124 	struct mii_softc *sc;
125 
126 	sc = device_get_softc(dev);
127 
128 	mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &ukphy_funcs, 1);
129 	mii_phy_setmedia(sc);
130 
131 	return (0);
132 }
133 
134 static int
135 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
136 {
137 
138 	switch (cmd) {
139 	case MII_POLLSTAT:
140 		break;
141 
142 	case MII_MEDIACHG:
143 		/*
144 		 * If the interface is not up, don't do anything.
145 		 */
146 		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
147 			break;
148 
149 		mii_phy_setmedia(sc);
150 		break;
151 
152 	case MII_TICK:
153 		if (mii_phy_tick(sc) == EJUSTRETURN)
154 			return (0);
155 		break;
156 	}
157 
158 	/* Update the media status. */
159 	PHY_STATUS(sc);
160 
161 	/* Callback if something changed. */
162 	mii_phy_update(sc, cmd);
163 	return (0);
164 }
165