1 /* $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
11 * NASA Ames Research Center.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
36 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
59 #include <sys/cdefs.h>
60 __FBSDID("$FreeBSD$");
63 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
64 * datasheet from www.icst.com
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>
75 #include <net/if_media.h>
77 #include <dev/mii/mii.h>
78 #include <dev/mii/miivar.h>
81 #include <dev/mii/icsphyreg.h>
83 #include "miibus_if.h"
85 static int icsphy_probe(device_t dev);
86 static int icsphy_attach(device_t dev);
88 static device_method_t icsphy_methods[] = {
89 /* device interface */
90 DEVMETHOD(device_probe, icsphy_probe),
91 DEVMETHOD(device_attach, icsphy_attach),
92 DEVMETHOD(device_detach, mii_phy_detach),
93 DEVMETHOD(device_shutdown, bus_generic_shutdown),
97 static devclass_t icsphy_devclass;
99 static driver_t icsphy_driver = {
102 sizeof(struct mii_softc)
105 DRIVER_MODULE(icsphy, miibus, icsphy_driver, icsphy_devclass, 0, 0);
107 static int icsphy_service(struct mii_softc *, struct mii_data *, int);
108 static void icsphy_status(struct mii_softc *);
109 static void icsphy_reset(struct mii_softc *);
111 static const struct mii_phydesc icsphys[] = {
112 MII_PHY_DESC(ICS, 1889),
113 MII_PHY_DESC(ICS, 1890),
114 MII_PHY_DESC(ICS, 1892),
115 MII_PHY_DESC(ICS, 1893),
119 static const struct mii_phy_funcs icsphy_funcs = {
126 icsphy_probe(device_t dev)
129 return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT));
133 icsphy_attach(device_t dev)
136 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
142 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
150 mii_phy_setmedia(sc);
154 if (mii_phy_tick(sc) == EJUSTRETURN)
159 /* Update the media status. */
162 /* Callback if something changed. */
163 mii_phy_update(sc, cmd);
168 icsphy_status(struct mii_softc *sc)
170 struct mii_data *mii = sc->mii_pdata;
171 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
174 mii->mii_media_status = IFM_AVALID;
175 mii->mii_media_active = IFM_ETHER;
178 * Don't get link from the BMSR. It's available in the QPR,
179 * and we have to read it twice to unlatch it anyhow. This
180 * gives us fewer register reads.
182 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */
183 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */
186 mii->mii_media_status |= IFM_ACTIVE;
188 bmcr = PHY_READ(sc, MII_BMCR);
189 if (bmcr & BMCR_ISO) {
190 mii->mii_media_active |= IFM_NONE;
191 mii->mii_media_status = 0;
195 if (bmcr & BMCR_LOOP)
196 mii->mii_media_active |= IFM_LOOP;
198 if (bmcr & BMCR_AUTOEN) {
199 if ((qpr & QPR_ACOMP) == 0) {
200 /* Erg, still trying, I guess... */
201 mii->mii_media_active |= IFM_NONE;
205 mii->mii_media_active |= IFM_100_TX;
207 mii->mii_media_active |= IFM_10_T;
209 mii->mii_media_active |=
210 IFM_FDX | mii_phy_flowstatus(sc);
212 mii->mii_media_active |= IFM_HDX;
214 mii->mii_media_active = ife->ifm_media;
218 icsphy_reset(struct mii_softc *sc)
222 /* set powerdown feature */
223 switch (sc->mii_mpd_model) {
224 case MII_MODEL_ICS_1890:
225 case MII_MODEL_ICS_1893:
226 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
228 case MII_MODEL_ICS_1892:
229 PHY_WRITE(sc, MII_ICSPHY_ECR2,
230 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
233 /* 1889 have no ECR2 */
237 * There is no description that the reset do auto-negotiation in the
240 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);