3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/dev/mii/xmphy.c,v 1.1.2.5 2002/11/08 21:53:49 semenu Exp $
33 * $DragonFly: src/sys/dev/netif/mii_layer/xmphy.c,v 1.10 2006/12/22 23:26:20 swildner Exp $
37 * driver for the XaQti XMAC II's internal PHY. This is sort of
38 * like a 10/100 PHY, except the only thing we're really autoselecting
39 * here is full/half duplex. Speed is always 1000mbps.
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
48 #include <machine/clock.h>
51 #include <net/if_media.h>
59 #include "miibus_if.h"
61 static int xmphy_probe (device_t);
62 static int xmphy_attach (device_t);
64 static device_method_t xmphy_methods[] = {
65 /* device interface */
66 DEVMETHOD(device_probe, xmphy_probe),
67 DEVMETHOD(device_attach, xmphy_attach),
68 DEVMETHOD(device_detach, ukphy_detach),
69 DEVMETHOD(device_shutdown, bus_generic_shutdown),
73 static const struct mii_phydesc xmphys[] = {
74 MII_PHYDESC(xxXAQTI, XMACII),
75 MII_PHYDESC(JATO, BASEX),
79 static devclass_t xmphy_devclass;
81 static driver_t xmphy_driver = {
84 sizeof(struct mii_softc)
87 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
89 static int xmphy_service(struct mii_softc *, struct mii_data *, int);
90 static void xmphy_status(struct mii_softc *);
92 static int xmphy_mii_phy_auto(struct mii_softc *, int);
95 xmphy_probe(device_t dev)
97 struct mii_attach_args *ma = device_get_ivars(dev);
98 const struct mii_phydesc *mpd;
100 mpd = mii_phy_match(ma, xmphys);
102 device_set_desc(dev, mpd->mpd_name);
109 xmphy_attach(device_t dev)
111 struct mii_softc *sc;
112 struct mii_attach_args *ma;
113 struct mii_data *mii;
114 const char *sep = "";
116 sc = device_get_softc(dev);
117 ma = device_get_ivars(dev);
118 mii_softc_init(sc, ma);
119 sc->mii_dev = device_get_parent(dev);
120 mii = device_get_softc(sc->mii_dev);
121 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
123 sc->mii_inst = mii->mii_instance;
124 sc->mii_service = xmphy_service;
125 sc->mii_reset = mii_phy_reset;
128 sc->mii_flags |= MIIF_NOISOLATE;
131 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
132 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", "
134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
138 BMCR_LOOP|BMCR_S100);
143 device_printf(dev, " ");
144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
148 PRINT("1000baseSX-FDX");
149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
156 MIIBUS_MEDIAINIT(sc->mii_dev);
161 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
169 * If we're not polling our PHY instance, just return.
171 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
177 * If the media indicates a different PHY instance,
180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
181 reg = PHY_READ(sc, MII_BMCR);
182 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
187 * If the interface is not up, don't do anything.
189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
192 switch (IFM_SUBTYPE(ife->ifm_media)) {
196 * If we're already in auto mode, just return.
198 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
201 xmphy_mii_phy_auto(sc, 1);
205 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
206 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
207 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
209 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
210 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
223 * If we're not currently selected, just return.
225 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
229 * Is the interface even up?
231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
235 * Only used for autonegotiation.
237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
241 * Check to see if we have link. If we do, we don't
242 * need to restart the autonegotiation process. Read
243 * the BMSR twice in case it's latched.
245 reg = PHY_READ(sc, XMPHY_MII_BMSR) |
246 PHY_READ(sc, XMPHY_MII_BMSR);
247 if (reg & XMPHY_BMSR_LINK)
251 * Only retry autonegotiation every mii_anegticks seconds.
253 if (++sc->mii_ticks <= sc->mii_anegticks)
259 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN)
264 /* Update the media status. */
267 /* Callback if something changed. */
268 mii_phy_update(sc, cmd);
273 xmphy_status(struct mii_softc *sc)
275 struct mii_data *mii = sc->mii_pdata;
276 int bmsr, bmcr, anlpar;
278 mii->mii_media_status = IFM_AVALID;
279 mii->mii_media_active = IFM_ETHER;
281 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
282 PHY_READ(sc, XMPHY_MII_BMSR);
283 if (bmsr & XMPHY_BMSR_LINK)
284 mii->mii_media_status |= IFM_ACTIVE;
286 /* Do dummy read of extended status register. */
287 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
289 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
291 if (bmcr & XMPHY_BMCR_LOOP)
292 mii->mii_media_active |= IFM_LOOP;
294 if (bmcr & XMPHY_BMCR_AUTOEN) {
295 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
296 if (bmsr & XMPHY_BMSR_LINK) {
297 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
300 /* Erg, still trying, I guess... */
301 mii->mii_media_active |= IFM_NONE;
305 mii->mii_media_active |= IFM_1000_SX;
306 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
307 PHY_READ(sc, XMPHY_MII_ANLPAR);
308 if (anlpar & XMPHY_ANLPAR_FDX)
309 mii->mii_media_active |= IFM_FDX;
311 mii->mii_media_active |= IFM_HDX;
315 mii->mii_media_active |= IFM_1000_SX;
316 if (bmcr & XMPHY_BMCR_FDX)
317 mii->mii_media_active |= IFM_FDX;
319 mii->mii_media_active |= IFM_HDX;
323 xmphy_mii_phy_auto(struct mii_softc *sc, int waitfor)
325 int bmsr, anar = 0, i;
327 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
328 anar = PHY_READ(sc, XMPHY_MII_ANAR);
329 anar |= XMPHY_ANAR_FDX | XMPHY_ANAR_HDX;
330 PHY_WRITE(sc, XMPHY_MII_ANAR, anar);
332 PHY_WRITE(sc, XMPHY_MII_BMCR,
333 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
337 /* Wait 500ms for it to complete. */
338 for (i = 0; i < 500; i++) {
339 bmsr = PHY_READ(sc, XMPHY_MII_BMSR);
340 if (bmsr & XMPHY_BMSR_ACOMP)
346 * Don't need to worry about clearing MIIF_DOINGAUTO.
347 * If that's set, a timeout is pending, and it will
354 * Just let it finish asynchronously. This is for the benefit of
355 * the tick handler driving autonegotiation. Don't want 500ms
356 * delays all the time while the system is running!
358 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
359 sc->mii_flags |= MIIF_DOINGAUTO;
360 callout_reset(&sc->mii_auto_ch, hz >> 1,
361 mii_phy_auto_timeout, sc);
363 return (EJUSTRETURN);