1/* $NetBSD: ukphy.c,v 1.49 2016/07/07 06:55:41 msaitoh 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 *
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/*
58 * driver for generic unknown PHYs
59 */
60
61#include <sys/cdefs.h>
62__KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.49 2016/07/07 06:55:41 msaitoh Exp $");
63
64#ifdef _KERNEL_OPT
65#include "opt_mii.h"
66#endif
67
68#include <sys/param.h>
69#include <sys/systm.h>
70#include <sys/kernel.h>
71#include <sys/device.h>
72#include <sys/socket.h>
73#include <sys/errno.h>
74
75#include <net/if.h>
76#include <net/if_media.h>
77
78#include <dev/mii/mii.h>
79#include <dev/mii/miivar.h>
80
81static int ukphymatch(device_t, cfdata_t, void *);
82static void ukphyattach(device_t, device_t, void *);
83
84CFATTACH_DECL3_NEW(ukphy, sizeof(struct mii_softc),
85 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL,
86 DVF_DETACH_SHUTDOWN);
87
88static int ukphy_service(struct mii_softc *, struct mii_data *, int);
89
90static const struct mii_phy_funcs ukphy_funcs = {
91 ukphy_service, ukphy_status, mii_phy_reset,
92};
93
94static int
95ukphymatch(device_t parent, cfdata_t match, void *aux)
96{
97
98 /*
99 * We know something is here, so always match at a low priority.
100 */
101 return (1);
102}
103
104static void
105ukphyattach(device_t parent, device_t self, void *aux)
106{
107 struct mii_softc *sc = device_private(self);
108 struct mii_attach_args *ma = aux;
109 struct mii_data *mii = ma->mii_data;
110 int oui = MII_OUI(ma->mii_id1, ma->mii_id2);
111 int model = MII_MODEL(ma->mii_id2);
112 int rev = MII_REV(ma->mii_id2);
113 const char *descr;
114
115 if ((descr = mii_get_descr(oui, model)) != NULL)
116 aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n",
117 descr, oui, model, rev);
118 else
119 aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n",
120 oui, model, rev);
121 aprint_naive(": Media interface\n");
122
123 sc->mii_dev = self;
124 sc->mii_inst = mii->mii_instance;
125 sc->mii_phy = ma->mii_phyno;
126 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
127 sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
128 sc->mii_mpd_rev = MII_REV(ma->mii_id2);
129 sc->mii_funcs = &ukphy_funcs;
130 sc->mii_pdata = mii;
131 sc->mii_flags = ma->mii_flags;
132 sc->mii_anegticks = MII_ANEGTICKS;
133
134 /*
135 * Don't do loopback on unknown PHYs. It might confuse some of them.
136 */
137 sc->mii_flags |= MIIF_NOLOOP;
138
139 PHY_RESET(sc);
140
141 sc->mii_capabilities = 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 aprint_normal_dev(self, "");
145 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
146 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
147 aprint_error("no media present");
148 else
149 mii_phy_add_media(sc);
150 aprint_normal("\n");
151}
152
153static int
154ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
155{
156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
157 int reg;
158
159 switch (cmd) {
160 case MII_POLLSTAT:
161 /*
162 * If we're not polling our PHY instance, just return.
163 */
164 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
165 return (0);
166 break;
167
168 case MII_MEDIACHG:
169 /*
170 * If the media indicates a different PHY instance,
171 * isolate ourselves.
172 */
173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
174 reg = PHY_READ(sc, MII_BMCR);
175 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
176 return (0);
177 }
178
179 /*
180 * If the interface is not up, don't do anything.
181 */
182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
183 break;
184
185 mii_phy_setmedia(sc);
186 break;
187
188 case MII_TICK:
189 /*
190 * If we're not currently selected, just return.
191 */
192 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
193 return (0);
194
195 if (mii_phy_tick(sc) == EJUSTRETURN)
196 return (0);
197 break;
198
199 case MII_DOWN:
200 mii_phy_down(sc);
201 return (0);
202 }
203
204 /* Update the media status. */
205 mii_phy_status(sc);
206
207 /* Callback if something changed. */
208 mii_phy_update(sc, cmd);
209 return (0);
210}
211