1 /* $OpenBSD: ukphy.c,v 1.15 2005/01/28 18:27:55 brad Exp $ */
2 /* $NetBSD: ukphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center, and by Frank van der Linden.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 /*
42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Manuel Bouyer.
55 * 4. The name of the author may not be used to endorse or promote products
56 * derived from this software without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 */
69
70 /*
71 * driver for generic unknown PHYs
72 */
73
74 #include <sys/param.h>
75 #include <sys/systm.h>
76 #include <sys/kernel.h>
77 #include <sys/device.h>
78 #include <sys/socket.h>
79 #include <sys/errno.h>
80
81 #include <net/if.h>
82 #include <net/if_media.h>
83
84 #include <dev/mii/mii.h>
85 #include <dev/mii/miivar.h>
86
87 int ukphymatch(struct device *, void *, void *);
88 void ukphyattach(struct device *, struct device *, void *);
89
90 struct cfattach ukphy_ca = {
91 sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach,
92 mii_phy_activate
93 };
94
95 struct cfdriver ukphy_cd = {
96 NULL, "ukphy", DV_DULL
97 };
98
99 int ukphy_service(struct mii_softc *, struct mii_data *, int);
100
101 const struct mii_phy_funcs ukphy_funcs = {
102 ukphy_service, ukphy_status, mii_phy_reset,
103 };
104
105 int
ukphymatch(struct device * parent,void * match,void * aux)106 ukphymatch(struct device *parent, void *match, void *aux)
107 {
108
109 /*
110 * We know something is here, so always match at a low priority.
111 */
112 return (1);
113 }
114
115 void
ukphyattach(struct device * parent,struct device * self,void * aux)116 ukphyattach(struct device *parent, struct device *self, void *aux)
117 {
118 struct mii_softc *sc = (struct mii_softc *)self;
119 struct mii_attach_args *ma = aux;
120 struct mii_data *mii = ma->mii_data;
121
122 printf(": Generic IEEE 802.3u media interface\n");
123 printf("%s: OUI 0x%06x, model 0x%04x, rev. %d\n",
124 sc->mii_dev.dv_xname, MII_OUI(ma->mii_id1, ma->mii_id2),
125 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
126
127 sc->mii_inst = mii->mii_instance;
128 sc->mii_phy = ma->mii_phyno;
129 sc->mii_funcs = &ukphy_funcs;
130 sc->mii_pdata = mii;
131 sc->mii_flags = ma->mii_flags;
132
133 /*
134 * Don't do loopback on unknown PHYs. It might confuse some of them.
135 */
136 sc->mii_flags |= MIIF_NOLOOP;
137
138 PHY_RESET(sc);
139
140 sc->mii_capabilities =
141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
142 if (sc->mii_capabilities & BMSR_EXTSTAT)
143 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
145 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
146 printf("%s: no media present\n", sc->mii_dev.dv_xname);
147 else
148 mii_phy_add_media(sc);
149 }
150
151 int
ukphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)152 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
153 {
154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
155 int reg;
156
157 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
158 return (ENXIO);
159
160 switch (cmd) {
161 case MII_POLLSTAT:
162 /*
163 * If we're not polling our PHY instance, just return.
164 */
165 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
166 return (0);
167 break;
168
169 case MII_MEDIACHG:
170 /*
171 * If the media indicates a different PHY instance,
172 * isolate ourselves.
173 */
174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
175 reg = PHY_READ(sc, MII_BMCR);
176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
177 return (0);
178 }
179
180 /*
181 * If the interface is not up, don't do anything.
182 */
183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
184 break;
185
186 mii_phy_setmedia(sc);
187 break;
188
189 case MII_TICK:
190 /*
191 * If we're not currently selected, just return.
192 */
193 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
194 return (0);
195
196 if (mii_phy_tick(sc) == EJUSTRETURN)
197 return (0);
198 break;
199
200 case MII_DOWN:
201 mii_phy_down(sc);
202 return (0);
203 }
204
205 /* Update the media status. */
206 mii_phy_status(sc);
207
208 /* Callback if something changed. */
209 mii_phy_update(sc, cmd);
210 return (0);
211 }
212