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.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
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/module.h>
46 #include <sys/socket.h>
50 #include <net/if_media.h>
52 #include <dev/mii/mii.h>
53 #include <dev/mii/miivar.h>
56 #include <dev/mii/xmphyreg.h>
58 #include "miibus_if.h"
60 static int xmphy_probe(device_t);
61 static int xmphy_attach(device_t);
63 static device_method_t xmphy_methods[] = {
64 /* device interface */
65 DEVMETHOD(device_probe, xmphy_probe),
66 DEVMETHOD(device_attach, xmphy_attach),
67 DEVMETHOD(device_detach, mii_phy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 static devclass_t xmphy_devclass;
74 static driver_t xmphy_driver = {
77 sizeof(struct mii_softc)
80 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
82 static int xmphy_service(struct mii_softc *, struct mii_data *, int);
83 static void xmphy_status(struct mii_softc *);
84 static int xmphy_mii_phy_auto(struct mii_softc *);
86 static const struct mii_phydesc xmphys[] = {
87 { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, MII_STR_XAQTI_XMACII },
88 MII_PHY_DESC(JATO, BASEX),
93 xmphy_probe(device_t dev)
96 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT));
100 xmphy_attach(device_t dev)
102 struct mii_softc *sc;
103 struct mii_attach_args *ma;
104 struct mii_data *mii;
105 const char *sep = "";
107 sc = device_get_softc(dev);
108 ma = device_get_ivars(dev);
109 sc->mii_dev = device_get_parent(dev);
111 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
113 sc->mii_flags = miibus_get_flags(dev);
114 sc->mii_inst = mii->mii_instance++;
115 sc->mii_phy = ma->mii_phyno;
116 sc->mii_service = xmphy_service;
119 sc->mii_flags |= MIIF_NOISOLATE;
120 sc->mii_anegticks = MII_ANEGTICKS;
124 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
125 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
127 device_printf(dev, " ");
128 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
132 PRINT("1000baseSX-FDX");
133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
140 MIIBUS_MEDIAINIT(sc->mii_dev);
145 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
156 * If the interface is not up, don't do anything.
158 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
161 switch (IFM_SUBTYPE(ife->ifm_media)) {
165 * If we're already in auto mode, just return.
167 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
170 (void)xmphy_mii_phy_auto(sc);
174 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
175 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
176 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
178 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
179 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
189 * Is the interface even up?
191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
195 * Only used for autonegotiation.
197 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
201 * Check to see if we have link. If we do, we don't
202 * need to restart the autonegotiation process. Read
203 * the BMSR twice in case it's latched.
205 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
209 /* Only retry autonegotiation every mii_anegticks seconds. */
210 if (sc->mii_ticks <= sc->mii_anegticks)
216 xmphy_mii_phy_auto(sc);
220 /* Update the media status. */
223 /* Callback if something changed. */
224 mii_phy_update(sc, cmd);
229 xmphy_status(struct mii_softc *sc)
231 struct mii_data *mii = sc->mii_pdata;
232 int bmsr, bmcr, anlpar;
234 mii->mii_media_status = IFM_AVALID;
235 mii->mii_media_active = IFM_ETHER;
237 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
238 PHY_READ(sc, XMPHY_MII_BMSR);
239 if (bmsr & XMPHY_BMSR_LINK)
240 mii->mii_media_status |= IFM_ACTIVE;
242 /* Do dummy read of extended status register. */
243 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
245 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
247 if (bmcr & XMPHY_BMCR_LOOP)
248 mii->mii_media_active |= IFM_LOOP;
251 if (bmcr & XMPHY_BMCR_AUTOEN) {
252 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
253 if (bmsr & XMPHY_BMSR_LINK) {
254 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
257 /* Erg, still trying, I guess... */
258 mii->mii_media_active |= IFM_NONE;
262 mii->mii_media_active |= IFM_1000_SX;
263 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
264 PHY_READ(sc, XMPHY_MII_ANLPAR);
265 if (anlpar & XMPHY_ANLPAR_FDX)
266 mii->mii_media_active |= IFM_FDX;
268 mii->mii_media_active |= IFM_HDX;
272 mii->mii_media_active |= IFM_1000_SX;
273 if (bmcr & XMPHY_BMCR_FDX)
274 mii->mii_media_active |= IFM_FDX;
276 mii->mii_media_active |= IFM_HDX;
280 xmphy_mii_phy_auto(struct mii_softc *mii)
284 anar = PHY_READ(mii, XMPHY_MII_ANAR);
285 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
286 PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
288 PHY_WRITE(mii, XMPHY_MII_BMCR,
289 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
291 return (EJUSTRETURN);