2 * SPDX-License-Identifier: BSD-4-Clause
5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * driver for the XaQti XMAC II's internal PHY. This is sort of
40 * like a 10/100 PHY, except the only thing we're really autoselecting
41 * here is full/half duplex. Speed is always 1000mbps.
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/module.h>
48 #include <sys/socket.h>
52 #include <net/if_media.h>
54 #include <dev/mii/mii.h>
55 #include <dev/mii/miivar.h>
58 #include <dev/mii/xmphyreg.h>
60 #include "miibus_if.h"
62 static int xmphy_probe(device_t);
63 static int xmphy_attach(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, mii_phy_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 static int xmphy_service(struct mii_softc *, struct mii_data *, int);
85 static void xmphy_status(struct mii_softc *);
86 static int xmphy_mii_phy_auto(struct mii_softc *);
88 static const struct mii_phydesc xmphys[] = {
89 MII_PHY_DESC(xxJATO, BASEX),
90 MII_PHY_DESC(xxXAQTI, XMACII),
94 static const struct mii_phy_funcs xmphy_funcs = {
101 xmphy_probe(device_t dev)
104 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT));
108 xmphy_attach(device_t dev)
110 struct mii_softc *sc;
111 const char *sep = "";
113 sc = device_get_softc(dev);
115 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
117 sc->mii_anegticks = MII_ANEGTICKS;
121 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL)
122 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
124 device_printf(dev, " ");
125 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst));
127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst));
128 PRINT("1000baseSX-FDX");
129 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst));
137 MIIBUS_MEDIAINIT(sc->mii_dev);
142 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
152 switch (IFM_SUBTYPE(ife->ifm_media)) {
156 * If we're already in auto mode, just return.
158 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
161 (void)xmphy_mii_phy_auto(sc);
165 if ((ife->ifm_media & IFM_FDX) != 0) {
166 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
167 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
169 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
170 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
180 * Only used for autonegotiation.
182 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
186 * Check to see if we have link. If we do, we don't
187 * need to restart the autonegotiation process. Read
188 * the BMSR twice in case it's latched.
190 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
194 /* Only retry autonegotiation every mii_anegticks seconds. */
195 if (sc->mii_ticks <= sc->mii_anegticks)
201 xmphy_mii_phy_auto(sc);
205 /* Update the media status. */
208 /* Callback if something changed. */
209 mii_phy_update(sc, cmd);
214 xmphy_status(struct mii_softc *sc)
216 struct mii_data *mii = sc->mii_pdata;
217 int bmsr, bmcr, anlpar;
219 mii->mii_media_status = IFM_AVALID;
220 mii->mii_media_active = IFM_ETHER;
222 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
223 PHY_READ(sc, XMPHY_MII_BMSR);
224 if (bmsr & XMPHY_BMSR_LINK)
225 mii->mii_media_status |= IFM_ACTIVE;
227 /* Do dummy read of extended status register. */
228 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
230 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
232 if (bmcr & XMPHY_BMCR_LOOP)
233 mii->mii_media_active |= IFM_LOOP;
235 if (bmcr & XMPHY_BMCR_AUTOEN) {
236 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
237 if (bmsr & XMPHY_BMSR_LINK) {
238 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
241 /* Erg, still trying, I guess... */
242 mii->mii_media_active |= IFM_NONE;
246 mii->mii_media_active |= IFM_1000_SX;
247 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
248 PHY_READ(sc, XMPHY_MII_ANLPAR);
249 if (anlpar & XMPHY_ANLPAR_FDX)
250 mii->mii_media_active |= IFM_FDX;
252 mii->mii_media_active |= IFM_HDX;
256 mii->mii_media_active |= IFM_1000_SX;
257 if (bmcr & XMPHY_BMCR_FDX)
258 mii->mii_media_active |= IFM_FDX;
260 mii->mii_media_active |= IFM_HDX;
264 xmphy_mii_phy_auto(struct mii_softc *mii)
268 anar = PHY_READ(mii, XMPHY_MII_ANAR);
269 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
270 PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
272 PHY_WRITE(mii, XMPHY_MII_BMCR,
273 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
275 return (EJUSTRETURN);