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 1.8 2005/12/11 01:54:08 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);
63 static int xmphy_detach (device_t);
65 static device_method_t xmphy_methods[] = {
66 /* device interface */
67 DEVMETHOD(device_probe, xmphy_probe),
68 DEVMETHOD(device_attach, xmphy_attach),
69 DEVMETHOD(device_detach, xmphy_detach),
70 DEVMETHOD(device_shutdown, bus_generic_shutdown),
74 static devclass_t xmphy_devclass;
76 static driver_t xmphy_driver = {
79 sizeof(struct mii_softc)
82 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
84 int xmphy_service (struct mii_softc *, struct mii_data *, int);
85 void xmphy_status (struct mii_softc *);
87 static int xmphy_mii_phy_auto (struct mii_softc *, int);
88 extern void mii_phy_auto_timeout (void *);
91 xmphy_probe(device_t dev)
93 struct mii_attach_args *ma;
95 ma = device_get_ivars(dev);
97 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI &&
98 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) {
99 device_set_desc(dev, MII_STR_XAQTI_XMACII);
103 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO &&
104 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) {
105 device_set_desc(dev, MII_STR_JATO_BASEX);
113 xmphy_attach(device_t dev)
115 struct mii_softc *sc;
116 struct mii_attach_args *ma;
117 struct mii_data *mii;
118 const char *sep = "";
120 sc = device_get_softc(dev);
121 ma = device_get_ivars(dev);
122 mii_softc_init(sc, ma);
123 sc->mii_dev = device_get_parent(dev);
124 mii = device_get_softc(sc->mii_dev);
125 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
127 sc->mii_inst = mii->mii_instance;
128 sc->mii_service = xmphy_service;
131 sc->mii_flags |= MIIF_NOISOLATE;
134 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
135 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
141 BMCR_LOOP|BMCR_S100);
146 device_printf(dev, " ");
147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
151 PRINT("1000baseSX-FDX");
152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
159 MIIBUS_MEDIAINIT(sc->mii_dev);
164 xmphy_detach(device_t dev)
166 struct mii_softc *sc;
167 struct mii_data *mii;
169 sc = device_get_softc(dev);
170 mii = device_get_softc(device_get_parent(dev));
171 if (sc->mii_flags & MIIF_DOINGAUTO)
172 callout_stop(&sc->mii_auto_ch);
174 LIST_REMOVE(sc, mii_list);
180 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
188 * If we're not polling our PHY instance, just return.
190 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
196 * If the media indicates a different PHY instance,
199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
200 reg = PHY_READ(sc, MII_BMCR);
201 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
206 * If the interface is not up, don't do anything.
208 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
211 switch (IFM_SUBTYPE(ife->ifm_media)) {
215 * If we're already in auto mode, just return.
217 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
220 (void) xmphy_mii_phy_auto(sc, 1);
224 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
225 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
226 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
228 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
229 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
242 * If we're not currently selected, just return.
244 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
248 * Only used for autonegotiation.
250 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
254 * Is the interface even up?
256 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
260 * Only retry autonegotiation every 5 seconds.
262 if (++sc->mii_ticks != 5)
268 * Check to see if we have link. If we do, we don't
269 * need to restart the autonegotiation process. Read
270 * the BMSR twice in case it's latched.
272 reg = PHY_READ(sc, XMPHY_MII_BMSR) |
273 PHY_READ(sc, XMPHY_MII_BMSR);
274 if (reg & XMPHY_BMSR_LINK)
278 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN)
283 /* Update the media status. */
286 /* Callback if something changed. */
287 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
288 MIIBUS_STATCHG(sc->mii_dev);
289 sc->mii_active = mii->mii_media_active;
295 xmphy_status(struct mii_softc *sc)
297 struct mii_data *mii = sc->mii_pdata;
298 int bmsr, bmcr, anlpar;
300 mii->mii_media_status = IFM_AVALID;
301 mii->mii_media_active = IFM_ETHER;
303 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
304 PHY_READ(sc, XMPHY_MII_BMSR);
305 if (bmsr & XMPHY_BMSR_LINK)
306 mii->mii_media_status |= IFM_ACTIVE;
308 /* Do dummy read of extended status register. */
309 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
311 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
313 if (bmcr & XMPHY_BMCR_LOOP)
314 mii->mii_media_active |= IFM_LOOP;
317 if (bmcr & XMPHY_BMCR_AUTOEN) {
318 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
319 if (bmsr & XMPHY_BMSR_LINK) {
320 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
323 /* Erg, still trying, I guess... */
324 mii->mii_media_active |= IFM_NONE;
328 mii->mii_media_active |= IFM_1000_SX;
329 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
330 PHY_READ(sc, XMPHY_MII_ANLPAR);
331 if (anlpar & XMPHY_ANLPAR_FDX)
332 mii->mii_media_active |= IFM_FDX;
334 mii->mii_media_active |= IFM_HDX;
338 mii->mii_media_active |= IFM_1000_SX;
339 if (bmcr & XMPHY_BMCR_FDX)
340 mii->mii_media_active |= IFM_FDX;
342 mii->mii_media_active |= IFM_HDX;
348 xmphy_mii_phy_auto(struct mii_softc *mii, int waitfor)
350 int bmsr, anar = 0, i;
352 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
353 anar = PHY_READ(mii, XMPHY_MII_ANAR);
354 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
355 PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
357 PHY_WRITE(mii, XMPHY_MII_BMCR,
358 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
362 /* Wait 500ms for it to complete. */
363 for (i = 0; i < 500; i++) {
364 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) &
369 if ((bmsr & BMSR_ACOMP) == 0)
370 printf("%s: autonegotiation failed to complete\n",
371 mii->mii_dev.dv_xname);
376 * Don't need to worry about clearing MIIF_DOINGAUTO.
377 * If that's set, a timeout is pending, and it will
384 * Just let it finish asynchronously. This is for the benefit of
385 * the tick handler driving autonegotiation. Don't want 500ms
386 * delays all the time while the system is running!
388 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
389 mii->mii_flags |= MIIF_DOINGAUTO;
390 callout_reset(&mii->mii_auto_ch, hz >> 1,
391 mii_phy_auto_timeout, mii);
393 return (EJUSTRETURN);