2 * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/mii/jmphy.c,v 1.1 2008/05/27 01:16:40 yongari Exp $
31 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
34 #include <sys/param.h>
36 #include <sys/kernel.h>
39 #include <net/if_media.h>
41 #include <dev/netif/mii_layer/mii.h>
42 #include <dev/netif/mii_layer/miivar.h>
43 #include <dev/netif/mii_layer/miidevs.h>
44 #include <dev/netif/mii_layer/jmphyreg.h>
46 #include "miibus_if.h"
48 static int jmphy_service(struct mii_softc *, struct mii_data *, int);
49 static void jmphy_status(struct mii_softc *);
50 static int jmphy_probe(device_t);
51 static int jmphy_attach(device_t);
52 static void jmphy_reset(struct mii_softc *);
53 static uint16_t jmphy_anar(struct ifmedia_entry *);
54 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *);
56 static device_method_t jmphy_methods[] = {
57 /* Device interface. */
58 DEVMETHOD(device_probe, jmphy_probe),
59 DEVMETHOD(device_attach, jmphy_attach),
60 DEVMETHOD(device_detach, ukphy_detach),
61 DEVMETHOD(device_shutdown, bus_generic_shutdown),
65 static devclass_t jmphy_devclass;
66 static driver_t jmphy_driver = {
69 sizeof(struct mii_softc)
72 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, NULL, NULL);
74 static const struct mii_phydesc jmphys[] = {
75 MII_PHYDESC(JMICRON, JMP202),
76 MII_PHYDESC(JMICRON, JMP211),
81 jmphy_probe(device_t dev)
83 struct mii_attach_args *ma = device_get_ivars(dev);
84 const struct mii_phydesc *mpd;
86 mpd = mii_phy_match(ma, jmphys);
88 device_set_desc(dev, mpd->mpd_name);
95 jmphy_attach(device_t dev)
98 struct mii_attach_args *ma;
101 sc = device_get_softc(dev);
102 ma = device_get_ivars(dev);
104 mii_softc_init(sc, ma);
105 sc->mii_dev = device_get_parent(dev);
106 mii = device_get_softc(sc->mii_dev);
107 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
109 sc->mii_inst = mii->mii_instance;
110 sc->mii_service = jmphy_service;
111 sc->mii_reset = jmphy_reset;
118 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
119 if (sc->mii_capabilities & BMSR_EXTSTAT)
120 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
122 device_printf(dev, " ");
123 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
124 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
125 kprintf("no media present");
127 mii_phy_add_media(sc);
130 MIIBUS_MEDIAINIT(sc->mii_dev);
135 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
137 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
143 * If we're not polling our PHY instance, just return.
145 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
151 * If the media indicates a different PHY instance,
154 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
155 bmcr = PHY_READ(sc, MII_BMCR);
156 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
161 * If the interface is not up, don't do anything.
163 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
166 if (jmphy_auto(sc, ife) != EJUSTRETURN)
172 * If we're not currently selected, just return.
174 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
178 * Is the interface even up?
180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
184 * Only used for autonegotiation.
186 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
189 /* Check for link. */
190 if (PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) {
195 /* Announce link loss right after it happens. */
196 if (sc->mii_ticks++ == 0)
198 if (sc->mii_ticks <= sc->mii_anegticks)
206 /* Update the media status. */
209 /* Callback if something changed. */
210 mii_phy_update(sc, cmd);
215 jmphy_status(struct mii_softc *sc)
217 struct mii_data *mii = sc->mii_pdata;
220 mii->mii_media_status = IFM_AVALID;
221 mii->mii_media_active = IFM_ETHER;
223 ssr = PHY_READ(sc, JMPHY_SSR);
224 if ((ssr & JMPHY_SSR_LINK_UP) != 0)
225 mii->mii_media_status |= IFM_ACTIVE;
227 bmcr = PHY_READ(sc, MII_BMCR);
228 if ((bmcr & BMCR_ISO) != 0) {
229 mii->mii_media_active |= IFM_NONE;
230 mii->mii_media_status = 0;
234 if ((bmcr & BMCR_LOOP) != 0)
235 mii->mii_media_active |= IFM_LOOP;
237 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) {
238 /* Erg, still trying, I guess... */
239 mii->mii_media_active |= IFM_NONE;
243 switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
244 case JMPHY_SSR_SPEED_1000:
245 mii->mii_media_active |= IFM_1000_T;
247 * jmphy(4) got a valid link so reset mii_ticks.
248 * Resetting mii_ticks is needed in order to
249 * detect link loss after auto-negotiation.
253 case JMPHY_SSR_SPEED_100:
254 mii->mii_media_active |= IFM_100_TX;
257 case JMPHY_SSR_SPEED_10:
258 mii->mii_media_active |= IFM_10_T;
262 mii->mii_media_active |= IFM_NONE;
266 if ((ssr & JMPHY_SSR_DUPLEX) != 0)
267 mii->mii_media_active |= IFM_FDX;
269 mii->mii_media_active |= IFM_HDX;
270 /* XXX Flow-control. */
272 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
273 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0)
274 mii->mii_media_active |= IFM_ETH_MASTER;
280 jmphy_reset(struct mii_softc *sc)
284 /* Disable sleep mode. */
285 PHY_WRITE(sc, JMPHY_TMCTL,
286 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB);
287 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN);
289 for (i = 0; i < 1000; i++) {
291 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
297 jmphy_anar(struct ifmedia_entry *ife)
302 switch (IFM_SUBTYPE(ife->ifm_media)) {
304 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
309 anar |= ANAR_TX | ANAR_TX_FD;
312 anar |= ANAR_10 | ANAR_10_FD;
322 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife)
324 uint16_t anar, bmcr, gig;
327 bmcr = PHY_READ(sc, MII_BMCR);
328 switch (IFM_SUBTYPE(ife->ifm_media)) {
330 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
333 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
339 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
340 return (EJUSTRETURN);
345 if ((ife->ifm_media & IFM_LOOP) != 0)
348 anar = jmphy_anar(ife);
349 /* XXX Always advertise pause capability. */
352 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
354 struct mii_data *mii;
357 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0)
358 gig |= GTCR_MAN_MS | GTCR_MAN_ADV;
360 PHY_WRITE(sc, MII_100T2CR, gig);
362 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
363 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
365 return (EJUSTRETURN);