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: head/sys/dev/mii/ukphy.c 213229 2010-09-27 20:31:03Z marius $");
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
80static int ukphy_probe(device_t);
81static int ukphy_attach(device_t);
82
83static 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 { 0, 0 }
90};
91
92static devclass_t ukphy_devclass;
93
94static driver_t ukphy_driver = {
95 "ukphy",
96 ukphy_methods,
97 sizeof(struct mii_softc)
98};
99
100DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
101
102static int ukphy_service(struct mii_softc *, struct mii_data *, int);
103
104static int
105ukphy_probe(device_t dev)
106{
107
108 /*
109 * We know something is here, so always match at a low priority.
110 */
111 device_set_desc(dev, "Generic IEEE 802.3u media interface");
112 return (BUS_PROBE_GENERIC);
113}
114
115static int
116ukphy_attach(device_t dev)
117{
118 struct mii_softc *sc;
119 struct mii_attach_args *ma;
120 struct mii_data *mii;
121
122 sc = device_get_softc(dev);
123 ma = device_get_ivars(dev);
124 sc->mii_dev = device_get_parent(dev);
125 mii = ma->mii_data;
126 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
127
128 if (bootverbose)
129 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
130 MII_OUI(ma->mii_id1, ma->mii_id2),
131 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
132
133 sc->mii_inst = mii->mii_instance;
134 sc->mii_phy = ma->mii_phyno;
135 sc->mii_service = ukphy_service;
136 sc->mii_pdata = mii;
137
138 mii->mii_instance++;
139
140 mii_phy_reset(sc);
141
142 sc->mii_capabilities =
143 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
144 if (sc->mii_capabilities & BMSR_EXTSTAT)
145 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
146 device_printf(dev, " ");
147 mii_phy_add_media(sc);
148 printf("\n");
149
150 MIIBUS_MEDIAINIT(sc->mii_dev);
151 mii_phy_setmedia(sc);
152
153 return (0);
154}
155
156static int
157ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
158{
159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
160 int reg;
161
162 switch (cmd) {
163 case MII_POLLSTAT:
164 /*
165 * If we're not polling our PHY instance, just return.
166 */
167 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
168 return (0);
169 break;
170
171 case MII_MEDIACHG:
172 /*
173 * If the media indicates a different PHY instance,
174 * isolate ourselves.
175 */
176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
177 reg = PHY_READ(sc, MII_BMCR);
178 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
179 return (0);
180 }
181
182 /*
183 * If the interface is not up, don't do anything.
184 */
185 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
186 break;
187
188 mii_phy_setmedia(sc);
189 break;
190
191 case MII_TICK:
192 /*
193 * If we're not currently selected, just return.
194 */
195 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
196 return (0);
197 if (mii_phy_tick(sc) == EJUSTRETURN)
198 return (0);
199 break;
200 }
201
202 /* Update the media status. */
203 ukphy_status(sc);
204
205 /* Callback if something changed. */
206 mii_phy_update(sc, cmd);
207 return (0);
208}