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 1.6 2005/06/13 22:18:44 joerg 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>
54 #include <sys/thread2.h>
56 #include <machine/clock.h>
59 #include <net/if_media.h>
64 #include "miibus_if.h"
66 void mii_phy_auto_timeout (void *);
69 mii_softc_init(struct mii_softc *mii)
71 callout_init(&mii->mii_auto_ch);
75 mii_phy_auto(mii, waitfor)
76 struct mii_softc *mii;
81 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
82 PHY_WRITE(mii, MII_ANAR,
83 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
84 PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
88 /* Wait 500ms for it to complete. */
89 for (i = 0; i < 500; i++) {
90 if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP)
94 if ((bmsr & BMSR_ACOMP) == 0)
95 printf("%s: autonegotiation failed to complete\n",
96 mii->mii_dev.dv_xname);
101 * Don't need to worry about clearing MIIF_DOINGAUTO.
102 * If that's set, a timeout is pending, and it will
109 * Just let it finish asynchronously. This is for the benefit of
110 * the tick handler driving autonegotiation. Don't want 500ms
111 * delays all the time while the system is running!
113 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
114 mii->mii_flags |= MIIF_DOINGAUTO;
115 callout_reset(&mii->mii_auto_ch, hz >> 1,
116 mii_phy_auto_timeout, mii);
118 return (EJUSTRETURN);
122 mii_phy_auto_stop(sc)
123 struct mii_softc *sc;
125 if (sc->mii_flags & MIIF_DOINGAUTO) {
126 sc->mii_flags &= ~MIIF_DOINGAUTO;
127 callout_stop(&sc->mii_auto_ch);
132 mii_phy_auto_timeout(arg)
135 struct mii_softc *mii = arg;
140 mii->mii_flags &= ~MIIF_DOINGAUTO;
141 bmsr = PHY_READ(mii, MII_BMSR);
143 if ((bmsr & BMSR_ACOMP) == 0)
144 printf("%s: autonegotiation failed to complete\n",
145 sc->sc_dev.dv_xname);
148 /* Update the media status. */
149 (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT);
156 struct mii_softc *mii;
160 if (mii->mii_flags & MIIF_NOISOLATE)
163 reg = BMCR_RESET | BMCR_ISO;
164 PHY_WRITE(mii, MII_BMCR, reg);
166 /* Wait 100ms for it to complete. */
167 for (i = 0; i < 100; i++) {
168 reg = PHY_READ(mii, MII_BMCR);
169 if ((reg & BMCR_RESET) == 0)
174 if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0))
175 PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO);
179 * Given an ifmedia word, return the corresponding ANAR value.
187 switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
188 case IFM_ETHER|IFM_10_T:
189 rv = ANAR_10|ANAR_CSMA;
191 case IFM_ETHER|IFM_10_T|IFM_FDX:
192 rv = ANAR_10_FD|ANAR_CSMA;
194 case IFM_ETHER|IFM_100_TX:
195 rv = ANAR_TX|ANAR_CSMA;
197 case IFM_ETHER|IFM_100_TX|IFM_FDX:
198 rv = ANAR_TX_FD|ANAR_CSMA;
200 case IFM_ETHER|IFM_100_T4:
201 rv = ANAR_T4|ANAR_CSMA;
212 * Given a BMCR value, return the corresponding ifmedia word.
215 mii_media_from_bmcr(bmcr)
220 if (bmcr & BMCR_S100)
231 * Initialize generic PHY media based on BMSR, called when a PHY is
232 * attached. We expect to be set up to print a comma-separated list
233 * of media names. Does not print a newline.
236 mii_add_media(mii, bmsr, instance)
237 struct mii_data *mii;
240 const char *sep = "";
242 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
243 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
245 if (bmsr & BMSR_10THDX) {
246 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, instance), 0);
249 if (bmsr & BMSR_10TFDX) {
250 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, instance),
252 PRINT("10baseT-FDX");
254 if (bmsr & BMSR_100TXHDX) {
255 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, instance),
259 if (bmsr & BMSR_100TXFDX) {
260 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, instance),
262 PRINT("100baseTX-FDX");
264 if (bmsr & BMSR_100T4) {
266 * XXX How do you enable 100baseT4? I assume we set
267 * XXX BMCR_S100 and then assume the PHYs will take
268 * XXX watever action is necessary to switch themselves
271 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, instance),
275 if (bmsr & BMSR_ANEG) {
276 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, instance),