1 /* $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner Exp $ */
4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
39 * $FreeBSD: src/sys/dev/mii/mii_physubr.c,v 1.2.2.1 2000/12/12 19:29:14 wpaul Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/mii_physubr.c,v 1.5 2004/09/18 19:32:59 dillon Exp $
44 * Subroutines common to all PHYs.
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/socket.h>
51 #include <sys/errno.h>
52 #include <sys/module.h>
55 #include <machine/clock.h>
58 #include <net/if_media.h>
63 #include "miibus_if.h"
65 void mii_phy_auto_timeout (void *);
68 mii_softc_init(struct mii_softc *mii)
70 callout_init(&mii->mii_auto_ch);
74 mii_phy_auto(mii, waitfor)
75 struct mii_softc *mii;
80 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
81 PHY_WRITE(mii, MII_ANAR,
82 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
83 PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
87 /* Wait 500ms for it to complete. */
88 for (i = 0; i < 500; i++) {
89 if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP)
93 if ((bmsr & BMSR_ACOMP) == 0)
94 printf("%s: autonegotiation failed to complete\n",
95 mii->mii_dev.dv_xname);
100 * Don't need to worry about clearing MIIF_DOINGAUTO.
101 * If that's set, a timeout is pending, and it will
108 * Just let it finish asynchronously. This is for the benefit of
109 * the tick handler driving autonegotiation. Don't want 500ms
110 * delays all the time while the system is running!
112 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
113 mii->mii_flags |= MIIF_DOINGAUTO;
114 callout_reset(&mii->mii_auto_ch, hz >> 1,
115 mii_phy_auto_timeout, mii);
117 return (EJUSTRETURN);
121 mii_phy_auto_stop(sc)
122 struct mii_softc *sc;
124 if (sc->mii_flags & MIIF_DOINGAUTO) {
125 sc->mii_flags &= ~MIIF_DOINGAUTO;
126 callout_stop(&sc->mii_auto_ch);
131 mii_phy_auto_timeout(arg)
134 struct mii_softc *mii = arg;
138 mii->mii_flags &= ~MIIF_DOINGAUTO;
139 bmsr = PHY_READ(mii, MII_BMSR);
141 if ((bmsr & BMSR_ACOMP) == 0)
142 printf("%s: autonegotiation failed to complete\n",
143 sc->sc_dev.dv_xname);
146 /* Update the media status. */
147 (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT);
153 struct mii_softc *mii;
157 if (mii->mii_flags & MIIF_NOISOLATE)
160 reg = BMCR_RESET | BMCR_ISO;
161 PHY_WRITE(mii, MII_BMCR, reg);
163 /* Wait 100ms for it to complete. */
164 for (i = 0; i < 100; i++) {
165 reg = PHY_READ(mii, MII_BMCR);
166 if ((reg & BMCR_RESET) == 0)
171 if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0))
172 PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO);
176 * Given an ifmedia word, return the corresponding ANAR value.
184 switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
185 case IFM_ETHER|IFM_10_T:
186 rv = ANAR_10|ANAR_CSMA;
188 case IFM_ETHER|IFM_10_T|IFM_FDX:
189 rv = ANAR_10_FD|ANAR_CSMA;
191 case IFM_ETHER|IFM_100_TX:
192 rv = ANAR_TX|ANAR_CSMA;
194 case IFM_ETHER|IFM_100_TX|IFM_FDX:
195 rv = ANAR_TX_FD|ANAR_CSMA;
197 case IFM_ETHER|IFM_100_T4:
198 rv = ANAR_T4|ANAR_CSMA;
209 * Given a BMCR value, return the corresponding ifmedia word.
212 mii_media_from_bmcr(bmcr)
217 if (bmcr & BMCR_S100)
228 * Initialize generic PHY media based on BMSR, called when a PHY is
229 * attached. We expect to be set up to print a comma-separated list
230 * of media names. Does not print a newline.
233 mii_add_media(mii, bmsr, instance)
234 struct mii_data *mii;
237 const char *sep = "";
239 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
240 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
242 if (bmsr & BMSR_10THDX) {
243 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, instance), 0);
246 if (bmsr & BMSR_10TFDX) {
247 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, instance),
249 PRINT("10baseT-FDX");
251 if (bmsr & BMSR_100TXHDX) {
252 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, instance),
256 if (bmsr & BMSR_100TXFDX) {
257 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, instance),
259 PRINT("100baseTX-FDX");
261 if (bmsr & BMSR_100T4) {
263 * XXX How do you enable 100baseT4? I assume we set
264 * XXX BMCR_S100 and then assume the PHYs will take
265 * XXX watever action is necessary to switch themselves
268 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, instance),
272 if (bmsr & BMSR_ANEG) {
273 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, instance),