1 /* $OpenBSD: lxtphy.c,v 1.14 2005/02/19 06:00:04 brad Exp $ */
2 /* NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp */
5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
40 * $FreeBSD: src/sys/dev/mii/lxtphy.c,v 1.1.2.1 2001/06/08 19:58:33 semenu Exp $
41 * $DragonFly: src/sys/dev/netif/mii_layer/lxtphy.c,v 1.10 2006/12/22 23:26:20 swildner Exp $
45 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by Manuel Bouyer.
58 * 4. The name of the author may not be used to endorse or promote products
59 * derived from this software without specific prior written permission.
61 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
62 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
63 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
64 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
65 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
66 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
67 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
68 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
69 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
70 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
74 * driver for Level One's LXT-970/LXT-971 ethernet 10/100 PHY
75 * datasheet from www.level1.com
78 #include <sys/param.h>
79 #include <sys/systm.h>
80 #include <sys/kernel.h>
81 #include <sys/socket.h>
82 #include <sys/errno.h>
83 #include <sys/module.h>
87 #include <net/if_media.h>
93 #include "lxtphyreg.h"
95 #include "miibus_if.h"
97 static int lxtphy_probe(device_t);
98 static int lxtphy_attach(device_t);
100 static int lxtphy_service(struct mii_softc *, struct mii_data *, int);
101 static void lxtphy_status(struct mii_softc *);
102 static void lxtphy_reset(struct mii_softc *);
103 static void lxtphy_set_tp(struct mii_softc *);
104 static void lxtphy_set_fx(struct mii_softc *);
106 static device_method_t lxtphy_methods[] = {
107 /* device interface */
108 DEVMETHOD(device_probe, lxtphy_probe),
109 DEVMETHOD(device_attach, lxtphy_attach),
110 DEVMETHOD(device_detach, ukphy_detach),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
115 static const struct mii_phydesc lxtphys[] = {
116 MII_PHYDESC_ARG(xxLEVEL1, LXT970, lxtphy_status),
117 MII_PHYDESC_ARG(xxLEVEL1a, LXT971, ukphy_status),
121 static devclass_t lxtphy_devclass;
123 static driver_t lxtphy_driver = {
126 sizeof(struct mii_softc)
129 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0);
132 lxtphy_probe(device_t dev)
134 struct mii_attach_args *ma = device_get_ivars(dev);
135 const struct mii_phydesc *mpd;
137 mpd = mii_phy_match(ma, lxtphys);
139 struct mii_softc *sc = device_get_softc(dev);
141 sc->mii_status = mpd->mpd_priv;
142 device_set_desc(dev, mpd->mpd_name);
149 lxtphy_attach(device_t dev)
151 struct mii_softc *sc;
152 struct mii_attach_args *ma;
153 struct mii_data *mii;
155 sc = device_get_softc(dev);
156 ma = device_get_ivars(dev);
157 mii_softc_init(sc, ma);
158 sc->mii_dev = device_get_parent(dev);
159 mii = device_get_softc(sc->mii_dev);
160 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
162 sc->mii_inst = mii->mii_instance;
163 sc->mii_service = lxtphy_service;
164 sc->mii_reset = lxtphy_reset;
166 sc->mii_flags |= MIIF_NOISOLATE;
172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
177 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
179 device_printf(dev, " ");
180 if (sc->mii_capabilities & BMSR_MEDIAMASK)
181 mii_phy_add_media(sc);
183 kprintf("no media present");
186 MIIBUS_MEDIAINIT(sc->mii_dev);
191 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
199 * If we're not polling our PHY instance, just return.
201 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
207 * If the media indicates a different PHY instance,
210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
211 reg = PHY_READ(sc, MII_BMCR);
212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
217 * If the interface is not up, don't do anything.
219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
222 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
227 mii_phy_set_media(sc);
232 * If we're not currently selected, just return.
234 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
237 if (mii_phy_tick(sc) == EJUSTRETURN)
242 /* Update the media status. */
245 /* Callback if something changed. */
246 mii_phy_update(sc, cmd);
251 lxtphy_status(struct mii_softc *sc)
253 struct mii_data *mii = sc->mii_pdata;
254 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
257 mii->mii_media_status = IFM_AVALID;
258 mii->mii_media_active = IFM_ETHER;
261 * Get link status from the CSR; we need to read the CSR
262 * for media type anyhow, and the link status in the CSR
263 * doens't latch, so fewer register reads are required.
265 csr = PHY_READ(sc, MII_LXTPHY_CSR);
267 mii->mii_media_status |= IFM_ACTIVE;
269 bmcr = PHY_READ(sc, MII_BMCR);
270 if (bmcr & BMCR_ISO) {
271 mii->mii_media_active |= IFM_NONE;
272 mii->mii_media_status = 0;
276 if (bmcr & BMCR_LOOP)
277 mii->mii_media_active |= IFM_LOOP;
279 if (bmcr & BMCR_AUTOEN) {
280 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
281 if ((bmsr & BMSR_ACOMP) == 0) {
282 /* Erg, still trying, I guess... */
283 mii->mii_media_active |= IFM_NONE;
287 mii->mii_media_active |= IFM_100_TX;
289 mii->mii_media_active |= IFM_10_T;
290 if (csr & CSR_DUPLEX)
291 mii->mii_media_active |= IFM_FDX;
293 mii->mii_media_active = ife->ifm_media;
297 lxtphy_set_tp(struct mii_softc *sc)
301 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
302 cfg &= ~CONFIG_100BASEFX;
303 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
307 lxtphy_set_fx(struct mii_softc *sc)
311 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
312 cfg |= CONFIG_100BASEFX;
313 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
317 lxtphy_reset(struct mii_softc *sc)
321 PHY_WRITE(sc, MII_LXTPHY_IER,
322 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);