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 1.11 2005/12/11 01:54:08 swildner 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, struct mii_attach_args *ma)
71 callout_init(&mii->mii_auto_ch);
72 mii->mii_phy = ma->mii_phyno;
73 mii->mii_flags |= ma->mii_flags;
77 mii_phy_auto(struct mii_softc *mii, int waitfor)
81 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
82 PHY_WRITE(mii, MII_ANAR, mii_bmsr_media_to_anar(mii));
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(struct mii_softc *sc)
123 if (sc->mii_flags & MIIF_DOINGAUTO) {
124 sc->mii_flags &= ~MIIF_DOINGAUTO;
125 callout_stop(&sc->mii_auto_ch);
130 mii_phy_auto_timeout(void *arg)
132 struct mii_softc *mii = arg;
137 mii->mii_flags &= ~MIIF_DOINGAUTO;
138 bmsr = PHY_READ(mii, MII_BMSR);
140 if ((bmsr & BMSR_ACOMP) == 0)
141 printf("%s: autonegotiation failed to complete\n",
142 sc->sc_dev.dv_xname);
145 /* Update the media status. */
146 (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT);
152 mii_phy_reset(struct mii_softc *mii)
156 if (mii->mii_flags & MIIF_NOISOLATE)
159 reg = BMCR_RESET | BMCR_ISO;
160 PHY_WRITE(mii, MII_BMCR, reg);
162 /* Wait 100ms for it to complete. */
163 for (i = 0; i < 100; i++) {
164 reg = PHY_READ(mii, MII_BMCR);
165 if ((reg & BMCR_RESET) == 0)
170 if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0))
171 PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO);
175 * Given an ifmedia word, return the corresponding ANAR value.
183 switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
184 case IFM_ETHER|IFM_1000_T:
187 case IFM_ETHER|IFM_1000_T|IFM_FDX:
190 case IFM_ETHER|IFM_10_T:
193 case IFM_ETHER|IFM_10_T|IFM_FDX:
196 case IFM_ETHER|IFM_100_TX:
199 case IFM_ETHER|IFM_100_TX|IFM_FDX:
202 case IFM_ETHER|IFM_100_T4:
213 * Given a BMCR value, return the corresponding ifmedia word.
216 mii_media_from_bmcr(int 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(struct mii_softc *sc, int bmsr)
238 struct mii_data *mii = sc->mii_pdata;
239 int instance = sc->mii_inst;
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 (sc->mii_flags & MIIF_IS_1000X) {
276 if (bmsr & BMSR_1000) {
277 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
278 instance), BMCR_S1000);
279 PRINT("1000baseT-FDX");
282 if (bmsr & BMSR_ANEG) {
283 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, instance),
292 mii_bmsr_media_to_anar(struct mii_softc *mii)
294 int bmsr = mii->mii_capabilities;
297 if (bmsr & BMSR_100T4)
299 if (bmsr & BMSR_100TXFDX)
301 if (bmsr & BMSR_100TXHDX)
303 if (bmsr & BMSR_10TFDX)
305 if (bmsr & BMSR_10THDX)
307 if (mii->mii_flags & MIIF_IS_1000X) {
308 if (bmsr & BMSR_1000)