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 $
36 * driver for the XaQti XMAC II's internal PHY. This is sort of
37 * like a 10/100 PHY, except the only thing we're really autoselecting
38 * here is full/half duplex. Speed is always 1000mbps.
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/socket.h>
47 #include <machine/clock.h>
50 #include <net/if_media.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, ukphy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 static const struct mii_phydesc xmphys[] = {
73 MII_PHYDESC(xxXAQTI, XMACII),
74 MII_PHYDESC(JATO, BASEX),
78 static devclass_t xmphy_devclass;
80 static driver_t xmphy_driver = {
83 sizeof(struct mii_softc)
86 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, NULL, NULL);
88 static int xmphy_service(struct mii_softc *, struct mii_data *, int);
89 static void xmphy_status(struct mii_softc *);
91 static int xmphy_mii_phy_auto(struct mii_softc *, int);
94 xmphy_probe(device_t dev)
96 struct mii_attach_args *ma = device_get_ivars(dev);
97 const struct mii_phydesc *mpd;
99 mpd = mii_phy_match(ma, xmphys);
101 device_set_desc(dev, mpd->mpd_name);
108 xmphy_attach(device_t dev)
110 struct mii_softc *sc;
111 struct mii_attach_args *ma;
112 struct mii_data *mii;
113 const char *sep = "";
115 sc = device_get_softc(dev);
116 ma = device_get_ivars(dev);
117 mii_softc_init(sc, ma);
118 sc->mii_dev = device_get_parent(dev);
119 mii = device_get_softc(sc->mii_dev);
120 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
122 sc->mii_inst = mii->mii_instance;
123 sc->mii_service = xmphy_service;
124 sc->mii_reset = mii_phy_reset;
127 sc->mii_flags |= MIIF_NOISOLATE;
130 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
131 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", "
133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
137 BMCR_LOOP|BMCR_S100);
142 device_printf(dev, " ");
143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
147 PRINT("1000baseSX-FDX");
148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
155 MIIBUS_MEDIAINIT(sc->mii_dev);
160 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
168 * If we're not polling our PHY instance, just return.
170 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
176 * If the media indicates a different PHY instance,
179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
180 reg = PHY_READ(sc, MII_BMCR);
181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
186 * If the interface is not up, don't do anything.
188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
191 switch (IFM_SUBTYPE(ife->ifm_media)) {
195 * If we're already in auto mode, just return.
197 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
200 xmphy_mii_phy_auto(sc, 1);
204 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
205 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
206 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
208 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
209 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
222 * If we're not currently selected, just return.
224 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
228 * Is the interface even up?
230 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
234 * Only used for autonegotiation.
236 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
240 * Check to see if we have link. If we do, we don't
241 * need to restart the autonegotiation process. Read
242 * the BMSR twice in case it's latched.
244 reg = PHY_READ(sc, XMPHY_MII_BMSR) |
245 PHY_READ(sc, XMPHY_MII_BMSR);
246 if (reg & XMPHY_BMSR_LINK) {
252 * Only retry autonegotiation every mii_anegticks seconds.
254 if (++sc->mii_ticks <= sc->mii_anegticks)
260 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN)
265 /* Update the media status. */
268 /* Callback if something changed. */
269 mii_phy_update(sc, cmd);
274 xmphy_status(struct mii_softc *sc)
276 struct mii_data *mii = sc->mii_pdata;
277 int bmsr, bmcr, anlpar;
279 mii->mii_media_status = IFM_AVALID;
280 mii->mii_media_active = IFM_ETHER;
282 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
283 PHY_READ(sc, XMPHY_MII_BMSR);
284 if (bmsr & XMPHY_BMSR_LINK)
285 mii->mii_media_status |= IFM_ACTIVE;
287 /* Do dummy read of extended status register. */
288 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
290 bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
292 if (bmcr & XMPHY_BMCR_LOOP)
293 mii->mii_media_active |= IFM_LOOP;
295 if (bmcr & XMPHY_BMCR_AUTOEN) {
296 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
297 if (bmsr & XMPHY_BMSR_LINK) {
298 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
301 /* Erg, still trying, I guess... */
302 mii->mii_media_active |= IFM_NONE;
306 mii->mii_media_active |= IFM_1000_SX;
307 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
308 PHY_READ(sc, XMPHY_MII_ANLPAR);
309 if (anlpar & XMPHY_ANLPAR_FDX)
310 mii->mii_media_active |= IFM_FDX;
312 mii->mii_media_active |= IFM_HDX;
316 mii->mii_media_active |= IFM_1000_SX;
317 if (bmcr & XMPHY_BMCR_FDX)
318 mii->mii_media_active |= IFM_FDX;
320 mii->mii_media_active |= IFM_HDX;
324 xmphy_mii_phy_auto(struct mii_softc *sc, int waitfor)
326 int bmsr, anar = 0, i;
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);
336 /* Wait 500ms for it to complete. */
337 for (i = 0; i < 500; i++) {
338 bmsr = PHY_READ(sc, XMPHY_MII_BMSR);
339 if (bmsr & XMPHY_BMSR_ACOMP)
345 return (EJUSTRETURN);