1 /* $NetBSD: ukphy.c,v 1.27 2006/03/29 07:05:24 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 1999, 2000 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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 *
39 * $FreeBSD: src/sys/dev/mii/ukphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
40 */
41
42 /*
43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Manuel Bouyer.
56 * 4. The name of the author may not be used to endorse or promote products
57 * derived from this software without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 */
70
71 /*
72 * driver for generic unknown PHYs
73 */
74
75 #include <sys/param.h>
76 #include <sys/systm.h>
77 #include <sys/kernel.h>
78 #include <sys/socket.h>
79 #include <sys/errno.h>
80 #include <sys/module.h>
81 #include <sys/bus.h>
82
83 #include <net/if.h>
84 #include <net/if_var.h>
85 #include <net/if_media.h>
86
87 #include <machine/clock.h>
88
89 #include "mii.h"
90 #include "miivar.h"
91
92 #include "miibus_if.h"
93
94 static int ukphy_service(struct mii_softc *, struct mii_data *, int);
95 static int ukphy_probe(device_t);
96
97 static device_method_t ukphy_methods[] = {
98 /* device interface */
99 DEVMETHOD(device_probe, ukphy_probe),
100 DEVMETHOD(device_attach, ukphy_attach),
101 DEVMETHOD(device_detach, ukphy_detach),
102 DEVMETHOD(device_shutdown, bus_generic_shutdown),
103 DEVMETHOD_END
104 };
105
106 static devclass_t ukphy_devclass;
107
108 static driver_t ukphy_driver = {
109 "ukphy",
110 ukphy_methods,
111 sizeof(struct mii_softc)
112 };
113
114 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, NULL, NULL);
115
116 static int
ukphy_probe(device_t dev)117 ukphy_probe(device_t dev)
118 {
119
120 /*
121 * We know something is here, so always match at a low priority.
122 */
123 device_set_desc(dev, "Generic IEEE 802.3u media interface");
124 return (-100);
125 }
126
127 int
ukphy_attach(device_t dev)128 ukphy_attach(device_t dev)
129 {
130 struct mii_softc *sc;
131 struct mii_attach_args *ma;
132 struct mii_data *mii;
133
134 sc = device_get_softc(dev);
135 ma = device_get_ivars(dev);
136
137 mii_softc_init(sc, ma);
138 sc->mii_dev = device_get_parent(dev);
139 mii = device_get_softc(sc->mii_dev);
140 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
141
142 if (bootverbose) {
143 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
144 MII_OUI(ma->mii_id1, ma->mii_id2),
145 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
146 }
147
148 sc->mii_inst = mii->mii_instance;
149 sc->mii_service = ukphy_service;
150 sc->mii_pdata = mii;
151
152 mii->mii_instance++;
153
154 /*
155 * Don't do loopback on unknown PHYs. It might confuse some of them.
156 */
157 sc->mii_flags |= MIIF_NOLOOP;
158
159 mii_phy_reset(sc);
160
161 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
162 if (sc->mii_capabilities & BMSR_EXTSTAT)
163 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
164
165 device_printf(dev, " ");
166 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
167 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
168 kprintf("no media present");
169 else
170 mii_phy_add_media(sc);
171 kprintf("\n");
172
173 MIIBUS_MEDIAINIT(sc->mii_dev);
174 return(0);
175 }
176
177 int
ukphy_detach(device_t dev)178 ukphy_detach(device_t dev)
179 {
180 struct mii_softc *sc;
181
182 sc = device_get_softc(dev);
183 sc->mii_dev = NULL;
184 LIST_REMOVE(sc, mii_list);
185
186 return(0);
187 }
188
189 static int
ukphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)190 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
191 {
192 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
193 int reg;
194
195 switch (cmd) {
196 case MII_POLLSTAT:
197 /*
198 * If we're not polling our PHY instance, just return.
199 */
200 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
201 return (0);
202 break;
203
204 case MII_MEDIACHG:
205 /*
206 * If the media indicates a different PHY instance,
207 * isolate ourselves.
208 */
209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
210 reg = PHY_READ(sc, MII_BMCR);
211 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
212 return (0);
213 }
214
215 /*
216 * If the interface is not up, don't do anything.
217 */
218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
219 break;
220
221 mii_phy_set_media(sc);
222 break;
223
224 case MII_TICK:
225 /*
226 * If we're not currently selected, just return.
227 */
228 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
229 return (0);
230
231 if (mii_phy_tick(sc) == EJUSTRETURN)
232 return (0);
233 break;
234 }
235
236 /* Update the media status. */
237 ukphy_status(sc);
238
239 /* Callback if something changed. */
240 mii_phy_update(sc, cmd);
241 return (0);
242 }
243