FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/ukphy.c
1 /* $NetBSD: ukphy.c,v 1.23 2003/04/29 01:49:34 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
40 /*
41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by Manuel Bouyer.
54 * 4. The name of the author may not be used to endorse or promote products
55 * derived from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67 */
68
69 /*
70 * driver for generic unknown PHYs
71 */
72
73 #include <sys/cdefs.h>
74 __KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.23 2003/04/29 01:49:34 thorpej Exp $");
75
76 #include "opt_mii.h"
77
78 #include <sys/param.h>
79 #include <sys/systm.h>
80 #include <sys/kernel.h>
81 #include <sys/device.h>
82 #include <sys/socket.h>
83 #include <sys/errno.h>
84
85 #include <net/if.h>
86 #include <net/if_media.h>
87
88 #include <dev/mii/mii.h>
89 #include <dev/mii/miivar.h>
90
91 #ifdef MIIVERBOSE
92 struct mii_knowndev {
93 int oui;
94 int model;
95 const char *descr;
96 };
97 #include <dev/mii/miidevs.h>
98 #include <dev/mii/miidevs_data.h>
99 #endif
100
101 int ukphymatch(struct device *, struct cfdata *, void *);
102 void ukphyattach(struct device *, struct device *, void *);
103
104 CFATTACH_DECL(ukphy, sizeof(struct mii_softc),
105 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate);
106
107 int ukphy_service(struct mii_softc *, struct mii_data *, int);
108
109 const struct mii_phy_funcs ukphy_funcs = {
110 ukphy_service, ukphy_status, mii_phy_reset,
111 };
112
113 int
114 ukphymatch(struct device *parent, struct cfdata *match, void *aux)
115 {
116
117 /*
118 * We know something is here, so always match at a low priority.
119 */
120 return (1);
121 }
122
123 void
124 ukphyattach(struct device *parent, struct device *self, void *aux)
125 {
126 struct mii_softc *sc = (struct mii_softc *)self;
127 struct mii_attach_args *ma = aux;
128 struct mii_data *mii = ma->mii_data;
129 int oui = MII_OUI(ma->mii_id1, ma->mii_id2);
130 int model = MII_MODEL(ma->mii_id2);
131 int rev = MII_REV(ma->mii_id2);
132 #ifdef MIIVERBOSE
133 int i;
134 #endif
135
136 aprint_naive(": Media interface\n");
137 aprint_normal(": Generic IEEE 802.3u media interface\n");
138 #ifdef MIIVERBOSE
139 for (i = 0; mii_knowndevs[i].descr != NULL; i++)
140 if (mii_knowndevs[i].oui == oui &&
141 mii_knowndevs[i].model == model)
142 break;
143 if (mii_knowndevs[i].descr != NULL)
144 aprint_normal("%s: %s (OUI 0x%06x, model 0x%04x), rev. %d\n",
145 sc->mii_dev.dv_xname, mii_knowndevs[i].descr,
146 oui, model, rev);
147 else
148 #endif
149 aprint_normal("%s: OUI 0x%06x, model 0x%04x, rev. %d\n",
150 sc->mii_dev.dv_xname, oui, model, rev);
151
152 sc->mii_inst = mii->mii_instance;
153 sc->mii_phy = ma->mii_phyno;
154 sc->mii_funcs = &ukphy_funcs;
155 sc->mii_pdata = mii;
156 sc->mii_flags = ma->mii_flags;
157 sc->mii_anegticks = 5;
158
159 /*
160 * Don't do loopback on unknown PHYs. It might confuse some of them.
161 */
162 sc->mii_flags |= MIIF_NOLOOP;
163
164 PHY_RESET(sc);
165
166 sc->mii_capabilities =
167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
168 if (sc->mii_capabilities & BMSR_EXTSTAT)
169 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
170 aprint_normal("%s: ", sc->mii_dev.dv_xname);
171 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
172 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
173 aprint_error("no media present");
174 else
175 mii_phy_add_media(sc);
176 aprint_normal("\n");
177 }
178
179 int
180 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
181 {
182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
183 int reg;
184
185 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
186 return (ENXIO);
187
188 switch (cmd) {
189 case MII_POLLSTAT:
190 /*
191 * If we're not polling our PHY instance, just return.
192 */
193 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
194 return (0);
195 break;
196
197 case MII_MEDIACHG:
198 /*
199 * If the media indicates a different PHY instance,
200 * isolate ourselves.
201 */
202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
203 reg = PHY_READ(sc, MII_BMCR);
204 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
205 return (0);
206 }
207
208 /*
209 * If the interface is not up, don't do anything.
210 */
211 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
212 break;
213
214 mii_phy_setmedia(sc);
215 break;
216
217 case MII_TICK:
218 /*
219 * If we're not currently selected, just return.
220 */
221 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
222 return (0);
223
224 /*
225 * Only used for autonegotiation.
226 */
227 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
228 return (0);
229
230 if (mii_phy_tick(sc) == EJUSTRETURN)
231 return (0);
232 break;
233
234 case MII_DOWN:
235 mii_phy_down(sc);
236 return (0);
237 }
238
239 /* Update the media status. */
240 mii_phy_status(sc);
241
242 /* Callback if something changed. */
243 mii_phy_update(sc, cmd);
244 return (0);
245 }
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