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_PHY_DESC(xxJATO, BASEX),
88 MII_PHY_DESC(xxXAQTI, XMACII),
92 static const struct mii_phy_funcs xmphy_funcs = {
99 xmphy_probe(device_t dev)
102 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT));
106 xmphy_attach(device_t dev)
108 struct mii_softc *sc;
109 const char *sep = "";
111 sc = device_get_softc(dev);
113 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
115 sc->mii_anegticks = MII_ANEGTICKS;
119 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL)
120 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
122 device_printf(dev, " ");
123 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst));
125 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst));
126 PRINT("1000baseSX-FDX");
127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst));
135 MIIBUS_MEDIAINIT(sc->mii_dev);
140 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
150 switch (IFM_SUBTYPE(ife->ifm_media)) {
154 * If we're already in auto mode, just return.
156 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
159 (void)xmphy_mii_phy_auto(sc);
163 if ((ife->ifm_media & IFM_FDX) != 0) {
164 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
165 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
167 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
168 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
178 * Only used for autonegotiation.
180 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
184 * Check to see if we have link. If we do, we don't
185 * need to restart the autonegotiation process. Read
186 * the BMSR twice in case it's latched.
188 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
192 /* Only retry autonegotiation every mii_anegticks seconds. */
193 if (sc->mii_ticks <= sc->mii_anegticks)
199 xmphy_mii_phy_auto(sc);
203 /* Update the media status. */
206 /* Callback if something changed. */
207 mii_phy_update(sc, cmd);
212 xmphy_status(struct mii_softc *sc)
214 struct mii_data *mii = sc->mii_pdata;
215 int bmsr, bmcr, anlpar;
217 mii->mii_media_status = IFM_AVALID;
218 mii->mii_media_active = IFM_ETHER;
220 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
221 PHY_READ(sc, XMPHY_MII_BMSR);
222 if (bmsr & XMPHY_BMSR_LINK)
223 mii->mii_media_status |= IFM_ACTIVE;
225 /* Do dummy read of extended status register. */
226 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
228 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
230 if (bmcr & XMPHY_BMCR_LOOP)
231 mii->mii_media_active |= IFM_LOOP;
233 if (bmcr & XMPHY_BMCR_AUTOEN) {
234 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
235 if (bmsr & XMPHY_BMSR_LINK) {
236 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
239 /* Erg, still trying, I guess... */
240 mii->mii_media_active |= IFM_NONE;
244 mii->mii_media_active |= IFM_1000_SX;
245 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
246 PHY_READ(sc, XMPHY_MII_ANLPAR);
247 if (anlpar & XMPHY_ANLPAR_FDX)
248 mii->mii_media_active |= IFM_FDX;
250 mii->mii_media_active |= IFM_HDX;
254 mii->mii_media_active |= IFM_1000_SX;
255 if (bmcr & XMPHY_BMCR_FDX)
256 mii->mii_media_active |= IFM_FDX;
258 mii->mii_media_active |= IFM_HDX;
262 xmphy_mii_phy_auto(struct mii_softc *mii)
266 anar = PHY_READ(mii, XMPHY_MII_ANAR);
267 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
268 PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
270 PHY_WRITE(mii, XMPHY_MII_BMCR,
271 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
273 return (EJUSTRETURN);