1/*-
2 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
7 * NASA Ames Research Center.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/*
32 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53 *
54 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp
55 *
56 */
57
58#include <sys/cdefs.h>
59__FBSDID("$FreeBSD: head/sys/dev/mii/bmtphy.c 215716 2010-11-22 21:24:29Z marius $");
60
61/*
62 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also
63 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in
64 * the 3c905C data sheet.
65 */
66
67#include <sys/param.h>
68#include <sys/systm.h>
69#include <sys/kernel.h>
70#include <sys/module.h>
71#include <sys/socket.h>
72#include <sys/bus.h>
73
74#include <net/if.h>
75#include <net/if_media.h>
76
77#include <dev/mii/mii.h>
78#include <dev/mii/miivar.h>
79#include "miidevs.h"
80
81#include <dev/mii/bmtphyreg.h>
82
83#include "miibus_if.h"
84
85static int bmtphy_probe(device_t);
86static int bmtphy_attach(device_t);
87
88static device_method_t bmtphy_methods[] = {
89 /* Device interface */
90 DEVMETHOD(device_probe, bmtphy_probe),
91 DEVMETHOD(device_attach, bmtphy_attach),
92 DEVMETHOD(device_detach, mii_phy_detach),
93 DEVMETHOD(device_shutdown, bus_generic_shutdown),
94
95 { 0, 0 }
96};
97
98static devclass_t bmtphy_devclass;
99
100static driver_t bmtphy_driver = {
101 "bmtphy",
102 bmtphy_methods,
103 sizeof(struct mii_softc)
104};
105
106DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0);
107
108static int bmtphy_service(struct mii_softc *, struct mii_data *, int);
109static void bmtphy_status(struct mii_softc *);
110
111static const struct mii_phydesc bmtphys_dp[] = {
112 MII_PHY_DESC(BROADCOM, BCM4401),
113 MII_PHY_DESC(BROADCOM, BCM5201),
114 MII_PHY_DESC(BROADCOM, BCM5221),
115 MII_PHY_END
116};
117
118static const struct mii_phydesc bmtphys_lp[] = {
119 MII_PHY_DESC(BROADCOM, 3C905B),
120 MII_PHY_DESC(BROADCOM, 3C905C),
121 MII_PHY_END
122};
123
124static int
125bmtphy_probe(device_t dev)
126{
127 int rval;
128
129 /* Let exphy(4) take precedence for these. */
130 rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY);
131 if (rval <= 0)
132 return (rval);
133
134 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT));
135}
136
137static int
138bmtphy_attach(device_t dev)
139{
140 struct mii_softc *sc;
141 struct mii_attach_args *ma;
142 struct mii_data *mii;
143
144 sc = device_get_softc(dev);
145 ma = device_get_ivars(dev);
146 sc->mii_dev = device_get_parent(dev);
147 mii = ma->mii_data;
148 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
149
150 sc->mii_flags = miibus_get_flags(dev);
151 sc->mii_inst = mii->mii_instance++;
152 sc->mii_phy = ma->mii_phyno;
153 sc->mii_service = bmtphy_service;
154 sc->mii_pdata = mii;
155
156 sc->mii_flags |= MIIF_NOMANPAUSE;
157
158 mii_phy_reset(sc);
159
160 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
161 device_printf(dev, " ");
162 mii_phy_add_media(sc);
163 printf("\n");
164
165 MIIBUS_MEDIAINIT(sc->mii_dev);
166
167 return (0);
168}
169
170static int
171bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
172{
173
174 switch (cmd) {
175 case MII_POLLSTAT:
176 break;
177
178 case MII_MEDIACHG:
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 if (mii_phy_tick(sc) == EJUSTRETURN)
190 return (0);
191 break;
192 }
193
194 /* Update the media status. */
195 bmtphy_status(sc);
196
197 /* Callback if something changed. */
198 mii_phy_update(sc, cmd);
199
200 return (0);
201}
202
203static void
204bmtphy_status(struct mii_softc *sc)
205{
206 struct mii_data *mii;
207 struct ifmedia_entry *ife;
208 int bmsr, bmcr, aux_csr;
209
210 mii = sc->mii_pdata;
211 ife = mii->mii_media.ifm_cur;
212
213 mii->mii_media_status = IFM_AVALID;
214 mii->mii_media_active = IFM_ETHER;
215
216 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
217 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
218
219 if (bmsr & BMSR_LINK)
220 mii->mii_media_status |= IFM_ACTIVE;
221
222 bmcr = PHY_READ(sc, MII_BMCR);
223 if (bmcr & BMCR_ISO) {
224 mii->mii_media_active |= IFM_NONE;
225 mii->mii_media_status = 0;
226 return;
227 }
228
229 if (bmcr & BMCR_LOOP)
230 mii->mii_media_active |= IFM_LOOP;
231
232 if (bmcr & BMCR_AUTOEN) {
233 /*
234 * The media status bits are only valid if autonegotiation
235 * has completed (or it's disabled).
236 */
237 if ((bmsr & BMSR_ACOMP) == 0) {
238 /* Erg, still trying, I guess... */
239 mii->mii_media_active |= IFM_NONE;
240 return;
241 }
242
243 if (aux_csr & AUX_CSR_SPEED)
244 mii->mii_media_active |= IFM_100_TX;
245 else
246 mii->mii_media_active |= IFM_10_T;
247 if (aux_csr & AUX_CSR_FDX)
248 mii->mii_media_active |=
249 IFM_FDX | mii_phy_flowstatus(sc);
250 else
251 mii->mii_media_active |= IFM_HDX;
252 } else
253 mii->mii_media_active = ife->ifm_media;
254}