1 /* $OpenBSD: ukphy.c,v 1.25 2022/04/06 18:59:29 naddy 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 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 /*
59 * driver for generic unknown PHYs
60 */
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/device.h>
65 #include <sys/socket.h>
66 #include <sys/errno.h>
67
68 #include <net/if.h>
69 #include <net/if_var.h>
70 #include <net/if_media.h>
71
72 #include <dev/mii/mii.h>
73 #include <dev/mii/miivar.h>
74
75 int ukphymatch(struct device *, void *, void *);
76 void ukphyattach(struct device *, struct device *, void *);
77
78 const struct cfattach ukphy_ca = {
79 sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach
80 };
81
82 struct cfdriver ukphy_cd = {
83 NULL, "ukphy", DV_DULL
84 };
85
86 int ukphy_service(struct mii_softc *, struct mii_data *, int);
87
88 const struct mii_phy_funcs ukphy_funcs = {
89 ukphy_service, ukphy_status, mii_phy_reset,
90 };
91
92 int
ukphymatch(struct device * parent,void * match,void * aux)93 ukphymatch(struct device *parent, void *match, void *aux)
94 {
95
96 /*
97 * We know something is here, so always match at a low priority.
98 */
99 return (1);
100 }
101
102 void
ukphyattach(struct device * parent,struct device * self,void * aux)103 ukphyattach(struct device *parent, struct device *self, void *aux)
104 {
105 struct mii_softc *sc = (struct mii_softc *)self;
106 struct mii_attach_args *ma = aux;
107 struct mii_data *mii = ma->mii_data;
108
109 printf(": Generic IEEE 802.3u media interface, rev. %d:",
110 MII_REV(ma->mii_id2));
111 printf(" OUI 0x%06x, model 0x%04x\n",
112 MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2));
113
114 sc->mii_inst = mii->mii_instance;
115 sc->mii_phy = ma->mii_phyno;
116 sc->mii_funcs = &ukphy_funcs;
117 sc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
118 sc->mii_model = MII_MODEL(ma->mii_id2);
119 sc->mii_pdata = mii;
120 sc->mii_flags = ma->mii_flags;
121
122 /*
123 * Don't do loopback on unknown PHYs. It might confuse some of them.
124 */
125 sc->mii_flags |= MIIF_NOLOOP;
126
127 PHY_RESET(sc);
128
129 sc->mii_capabilities =
130 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
131 if (sc->mii_capabilities & BMSR_EXTSTAT)
132 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
133 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
134 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
135 printf("%s: no media present\n", sc->mii_dev.dv_xname);
136 else
137 mii_phy_add_media(sc);
138 }
139
140 int
ukphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)141 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142 {
143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
144 int reg;
145
146 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
147 return (ENXIO);
148
149 switch (cmd) {
150 case MII_POLLSTAT:
151 /*
152 * If we're not polling our PHY instance, just return.
153 */
154 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
155 return (0);
156 break;
157
158 case MII_MEDIACHG:
159 /*
160 * If the media indicates a different PHY instance,
161 * isolate ourselves.
162 */
163 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
164 reg = PHY_READ(sc, MII_BMCR);
165 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
166 return (0);
167 }
168
169 /*
170 * If the interface is not up, don't do anything.
171 */
172 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
173 break;
174
175 mii_phy_setmedia(sc);
176 break;
177
178 case MII_TICK:
179 /*
180 * If we're not currently selected, just return.
181 */
182 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
183 return (0);
184
185 if (mii_phy_tick(sc) == EJUSTRETURN)
186 return (0);
187 break;
188
189 case MII_DOWN:
190 mii_phy_down(sc);
191 return (0);
192 }
193
194 /* Update the media status. */
195 mii_phy_status(sc);
196
197 /* Callback if something changed. */
198 mii_phy_update(sc, cmd);
199 return (0);
200 }
201