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 $
28 * $DragonFly: src/sys/dev/netif/mii_layer/jmphy.c,v 1.1 2008/07/22 11:28:49 sephe Exp $
32 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
35 #include <sys/param.h>
37 #include <sys/kernel.h>
40 #include <net/if_media.h>
42 #include <dev/netif/mii_layer/mii.h>
43 #include <dev/netif/mii_layer/miivar.h>
44 #include <dev/netif/mii_layer/miidevs.h>
45 #include <dev/netif/mii_layer/jmphyreg.h>
47 #include "miibus_if.h"
49 static int jmphy_service(struct mii_softc *, struct mii_data *, int);
50 static void jmphy_status(struct mii_softc *);
51 static int jmphy_probe(device_t);
52 static int jmphy_attach(device_t);
53 static void jmphy_reset(struct mii_softc *);
54 static uint16_t jmphy_anar(struct ifmedia_entry *);
55 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *);
57 static device_method_t jmphy_methods[] = {
58 /* Device interface. */
59 DEVMETHOD(device_probe, jmphy_probe),
60 DEVMETHOD(device_attach, jmphy_attach),
61 DEVMETHOD(device_detach, ukphy_detach),
62 DEVMETHOD(device_shutdown, bus_generic_shutdown),
66 static devclass_t jmphy_devclass;
67 static driver_t jmphy_driver = {
70 sizeof(struct mii_softc)
73 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0);
75 static const struct mii_phydesc jmphys[] = {
76 MII_PHYDESC(JMICRON, JMP202),
77 MII_PHYDESC(JMICRON, JMP211),
82 jmphy_probe(device_t dev)
84 struct mii_attach_args *ma = device_get_ivars(dev);
85 const struct mii_phydesc *mpd;
87 mpd = mii_phy_match(ma, jmphys);
89 device_set_desc(dev, mpd->mpd_name);
96 jmphy_attach(device_t dev)
99 struct mii_attach_args *ma;
100 struct mii_data *mii;
102 sc = device_get_softc(dev);
103 ma = device_get_ivars(dev);
105 mii_softc_init(sc, ma);
106 sc->mii_dev = device_get_parent(dev);
107 mii = device_get_softc(sc->mii_dev);
108 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
110 sc->mii_inst = mii->mii_instance;
111 sc->mii_service = jmphy_service;
112 sc->mii_reset = jmphy_reset;
119 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
120 if (sc->mii_capabilities & BMSR_EXTSTAT)
121 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
123 device_printf(dev, " ");
124 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
125 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
126 kprintf("no media present");
128 mii_phy_add_media(sc);
131 MIIBUS_MEDIAINIT(sc->mii_dev);
136 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
138 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
144 * If we're not polling our PHY instance, just return.
146 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
152 * If the media indicates a different PHY instance,
155 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
156 bmcr = PHY_READ(sc, MII_BMCR);
157 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
162 * If the interface is not up, don't do anything.
164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
167 if (jmphy_auto(sc, ife) != EJUSTRETURN)
173 * If we're not currently selected, just return.
175 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
179 * Is the interface even up?
181 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
185 * Only used for autonegotiation.
187 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
190 /* Check for link. */
191 if (PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) {
196 /* Announce link loss right after it happens. */
197 if (sc->mii_ticks++ == 0)
199 if (sc->mii_ticks <= sc->mii_anegticks)
207 /* Update the media status. */
210 /* Callback if something changed. */
211 mii_phy_update(sc, cmd);
216 jmphy_status(struct mii_softc *sc)
218 struct mii_data *mii = sc->mii_pdata;
221 mii->mii_media_status = IFM_AVALID;
222 mii->mii_media_active = IFM_ETHER;
224 ssr = PHY_READ(sc, JMPHY_SSR);
225 if ((ssr & JMPHY_SSR_LINK_UP) != 0)
226 mii->mii_media_status |= IFM_ACTIVE;
228 bmcr = PHY_READ(sc, MII_BMCR);
229 if ((bmcr & BMCR_ISO) != 0) {
230 mii->mii_media_active |= IFM_NONE;
231 mii->mii_media_status = 0;
235 if ((bmcr & BMCR_LOOP) != 0)
236 mii->mii_media_active |= IFM_LOOP;
238 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) {
239 /* Erg, still trying, I guess... */
240 mii->mii_media_active |= IFM_NONE;
244 switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
245 case JMPHY_SSR_SPEED_1000:
246 mii->mii_media_active |= IFM_1000_T;
248 * jmphy(4) got a valid link so reset mii_ticks.
249 * Resetting mii_ticks is needed in order to
250 * detect link loss after auto-negotiation.
254 case JMPHY_SSR_SPEED_100:
255 mii->mii_media_active |= IFM_100_TX;
258 case JMPHY_SSR_SPEED_10:
259 mii->mii_media_active |= IFM_10_T;
263 mii->mii_media_active |= IFM_NONE;
267 if ((ssr & JMPHY_SSR_DUPLEX) != 0)
268 mii->mii_media_active |= IFM_FDX;
270 mii->mii_media_active |= IFM_HDX;
271 /* XXX Flow-control. */
273 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
274 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0)
275 mii->mii_media_active |= IFM_ETH_MASTER;
281 jmphy_reset(struct mii_softc *sc)
285 /* Disable sleep mode. */
286 PHY_WRITE(sc, JMPHY_TMCTL,
287 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB);
288 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN);
290 for (i = 0; i < 1000; i++) {
292 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
298 jmphy_anar(struct ifmedia_entry *ife)
303 switch (IFM_SUBTYPE(ife->ifm_media)) {
305 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
310 anar |= ANAR_TX | ANAR_TX_FD;
313 anar |= ANAR_10 | ANAR_10_FD;
323 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife)
325 uint16_t anar, bmcr, gig;
328 bmcr = PHY_READ(sc, MII_BMCR);
329 switch (IFM_SUBTYPE(ife->ifm_media)) {
331 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
334 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
340 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
341 return (EJUSTRETURN);
346 if ((ife->ifm_media & IFM_LOOP) != 0)
349 anar = jmphy_anar(ife);
350 /* XXX Always advertise pause capability. */
353 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
355 struct mii_data *mii;
358 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0)
359 gig |= GTCR_MAN_MS | GTCR_MAN_ADV;
361 PHY_WRITE(sc, MII_100T2CR, gig);
363 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
364 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
366 return (EJUSTRETURN);