1 /* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate 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.
42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Manuel Bouyer.
55 * 4. The name of the author may not be used to endorse or promote products
56 * derived from this software without specific prior written permission.
58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
70 #include <sys/cdefs.h>
71 __FBSDID("$FreeBSD$");
74 * driver for Level One's LXT-970 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>
89 #include <dev/mii/mii.h>
90 #include <dev/mii/miivar.h>
93 #include <dev/mii/lxtphyreg.h>
95 #include "miibus_if.h"
97 static int lxtphy_probe(device_t);
98 static int lxtphy_attach(device_t);
100 static device_method_t lxtphy_methods[] = {
101 /* device interface */
102 DEVMETHOD(device_probe, lxtphy_probe),
103 DEVMETHOD(device_attach, lxtphy_attach),
104 DEVMETHOD(device_detach, mii_phy_detach),
105 DEVMETHOD(device_shutdown, bus_generic_shutdown),
109 static devclass_t lxtphy_devclass;
111 static driver_t lxtphy_driver = {
114 sizeof(struct mii_softc)
117 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0);
119 static int lxtphy_service(struct mii_softc *, struct mii_data *, int);
120 static void lxtphy_status(struct mii_softc *);
121 static void lxtphy_set_tp(struct mii_softc *);
122 static void lxtphy_set_fx(struct mii_softc *);
124 static const struct mii_phydesc lxtphys[] = {
125 MII_PHY_DESC(xxLEVEL1, LXT970),
130 lxtphy_probe(device_t dev)
133 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT));
137 lxtphy_attach(device_t dev)
139 struct mii_softc *sc;
140 struct mii_attach_args *ma;
141 struct mii_data *mii;
144 sc = device_get_softc(dev);
145 ma = device_get_ivars(dev);
146 sc->mii_dev = device_get_parent(dev);
147 mii = device_get_softc(sc->mii_dev);
148 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
150 sc->mii_inst = mii->mii_instance;
151 sc->mii_phy = ma->mii_phyno;
152 sc->mii_service = lxtphy_service;
159 sc->mii_capabilities =
160 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
161 device_printf(dev, " ");
164 * On Apple BMAC controllers, we end up in a weird state
165 * of partially-completed autonegotiation on boot. So
166 * force autonegotation to try again.
168 nic = device_get_name(device_get_parent(sc->mii_dev));
169 if (strcmp(nic, "bm") == 0)
170 sc->mii_flags |= MIIF_FORCEANEG | MIIF_NOISOLATE;
172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
175 printf("100baseFX, ");
176 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
177 MII_MEDIA_100_TX_FDX);
178 printf("100baseFX-FDX, ");
181 mii_phy_add_media(sc);
184 MIIBUS_MEDIAINIT(sc->mii_dev);
189 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
197 * If we're not polling our PHY instance, just return.
199 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
205 * If the media indicates a different PHY instance,
208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
209 reg = PHY_READ(sc, MII_BMCR);
210 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
215 * If the interface is not up, don't do anything.
217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
220 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
225 mii_phy_setmedia(sc);
230 * If we're not currently selected, just return.
232 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
234 if (mii_phy_tick(sc) == EJUSTRETURN)
239 /* Update the media status. */
242 /* Callback if something changed. */
243 mii_phy_update(sc, cmd);
248 lxtphy_status(struct mii_softc *sc)
250 struct mii_data *mii = sc->mii_pdata;
251 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
254 mii->mii_media_status = IFM_AVALID;
255 mii->mii_media_active = IFM_ETHER;
258 * Get link status from the CSR; we need to read the CSR
259 * for media type anyhow, and the link status in the CSR
260 * doens't latch, so fewer register reads are required.
262 csr = PHY_READ(sc, MII_LXTPHY_CSR);
264 mii->mii_media_status |= IFM_ACTIVE;
266 bmcr = PHY_READ(sc, MII_BMCR);
267 if (bmcr & BMCR_ISO) {
268 mii->mii_media_active |= IFM_NONE;
269 mii->mii_media_status = 0;
273 if (bmcr & BMCR_LOOP)
274 mii->mii_media_active |= IFM_LOOP;
276 if (bmcr & BMCR_AUTOEN) {
277 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
278 if ((bmsr & BMSR_ACOMP) == 0) {
279 /* Erg, still trying, I guess... */
280 mii->mii_media_active |= IFM_NONE;
284 mii->mii_media_active |= IFM_100_TX;
286 mii->mii_media_active |= IFM_10_T;
287 if (csr & CSR_DUPLEX)
288 mii->mii_media_active |= IFM_FDX;
290 mii->mii_media_active = ife->ifm_media;
294 lxtphy_set_tp(struct mii_softc *sc)
298 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
299 cfg &= ~CONFIG_100BASEFX;
300 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
304 lxtphy_set_fx(struct mii_softc *sc)
308 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
309 cfg |= CONFIG_100BASEFX;
310 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);