1/* $NetBSD: exphy.c,v 1.16 1999/04/23 04:24:32 thorpej Exp $ */
2
3/*-
4 * Copyright (c) 1998, 1999 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,

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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#include <sys/cdefs.h>
58__FBSDID("$FreeBSD: head/sys/dev/mii/exphy.c 221407 2011-05-03 19:51:29Z marius $");
59
60/*
61 * driver for 3Com internal PHYs
62 */
63
64#include <sys/param.h>
65#include <sys/systm.h>
66#include <sys/kernel.h>

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106 * Some 3Com internal PHYs report zero for OUI and model, others use
107 * actual values.
108 * Note that the 3Com internal PHYs having OUI 0x105a and model 0 are
109 * handled fine by ukphy(4); they can be isolated and don't require
110 * special treatment after reset.
111 */
112static const struct mii_phydesc exphys[] = {
113 { 0, 0, "3Com internal media interface" },
114 MII_PHY_DESC(xxBROADCOM, 3C905C),
115 MII_PHY_END
116};
117
118static const struct mii_phy_funcs exphy_funcs = {
119 exphy_service,
120 ukphy_status,
121 exphy_reset
122};
123
124static int
125exphy_probe(device_t dev)
126{
127
128 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
129 "xl") == 0)
130 return (mii_phy_dev_probe(dev, exphys, BUS_PROBE_DEFAULT));
131 return (ENXIO);
132}
133
134static int
135exphy_attach(device_t dev)
136{
137
138 /*
139 * The 3Com PHY can never be isolated.
140 */
141 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
142 &exphy_funcs, 1);
143 return (0);
144}
145
146static int
147exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
148{
149
150 switch (cmd) {

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171 /*
172 * The 3Com PHY's autonegotiation doesn't need to be
173 * kicked; it continues in the background.
174 */
175 break;
176 }
177
178 /* Update the media status. */
179 PHY_STATUS(sc);
180
181 /* Callback if something changed. */
182 mii_phy_update(sc, cmd);
183 return (0);
184}
185
186static void
187exphy_reset(struct mii_softc *sc)
188{
189
190 mii_phy_reset(sc);
191
192 /*
193 * XXX 3Com PHY doesn't set the BMCR properly after
194 * XXX reset, which breaks autonegotiation.
195 */
196 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
197}