2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.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/rlphy.c,v 1.2.2.4 2002/11/08 21:53:49 semenu Exp $
33 * $DragonFly: src/sys/dev/netif/mii_layer/rlphy.c,v 1.5 2004/09/18 19:32:59 dillon Exp $
35 * $FreeBSD: src/sys/dev/mii/rlphy.c,v 1.2.2.4 2002/11/08 21:53:49 semenu Exp $
39 * driver for RealTek 8139 internal PHYs
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
49 #include <net/if_arp.h>
50 #include <net/if_media.h>
56 #include <machine/bus.h>
57 #include "../rl/if_rlreg.h"
59 #include "miibus_if.h"
61 static int rlphy_probe (device_t);
62 static int rlphy_attach (device_t);
63 static int rlphy_detach (device_t);
65 static device_method_t rlphy_methods[] = {
66 /* device interface */
67 DEVMETHOD(device_probe, rlphy_probe),
68 DEVMETHOD(device_attach, rlphy_attach),
69 DEVMETHOD(device_detach, rlphy_detach),
70 DEVMETHOD(device_shutdown, bus_generic_shutdown),
74 static devclass_t rlphy_devclass;
76 static driver_t rlphy_driver = {
79 sizeof(struct mii_softc)
82 DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
84 int rlphy_service (struct mii_softc *, struct mii_data *, int);
85 void rlphy_status (struct mii_softc *);
87 static int rlphy_probe(dev)
90 struct mii_attach_args *ma;
93 ma = device_get_ivars(dev);
94 parent = device_get_parent(device_get_parent(dev));
96 /* Test for RealTek 8201L PHY */
97 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK &&
98 MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) {
99 device_set_desc(dev, MII_STR_REALTEK_RTL8201L);
104 * RealTek PHY doesn't have vendor/device ID registers:
105 * the rl driver fakes up a return value of all zeros.
107 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
108 MII_MODEL(ma->mii_id2) != 0)
112 * Make sure the parent is an `rl'.
114 if (strcmp(device_get_name(parent), "rl") != 0)
117 device_set_desc(dev, "RealTek internal media interface");
122 static int rlphy_attach(dev)
125 struct mii_softc *sc;
126 struct mii_attach_args *ma;
127 struct mii_data *mii;
129 sc = device_get_softc(dev);
130 ma = device_get_ivars(dev);
132 sc->mii_dev = device_get_parent(dev);
133 mii = device_get_softc(sc->mii_dev);
136 * The RealTek PHY can never be isolated, so never allow non-zero
139 if (mii->mii_instance != 0) {
140 device_printf(dev, "ignoring this PHY, non-zero instance\n");
144 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
146 sc->mii_inst = mii->mii_instance;
147 sc->mii_phy = ma->mii_phyno;
148 sc->mii_service = rlphy_service;
152 sc->mii_flags |= MIIF_NOISOLATE;
154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
156 #if 0 /* See above. */
157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
162 BMCR_LOOP|BMCR_S100);
166 sc->mii_capabilities =
167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
168 device_printf(dev, " ");
169 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
170 printf("no media present");
172 mii_add_media(mii, sc->mii_capabilities,
176 MIIBUS_MEDIAINIT(sc->mii_dev);
180 static int rlphy_detach(dev)
183 struct mii_softc *sc;
184 struct mii_data *mii;
186 sc = device_get_softc(dev);
187 mii = device_get_softc(device_get_softc(dev));
188 mii_phy_auto_stop(sc);
190 LIST_REMOVE(sc, mii_list);
196 rlphy_service(sc, mii, cmd)
197 struct mii_softc *sc;
198 struct mii_data *mii;
201 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
204 * We can't isolate the RealTek PHY, so it has to be the only one!
206 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
207 panic("rlphy_service: can't isolate RealTek PHY");
215 * If the interface is not up, don't do anything.
217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
220 switch (IFM_SUBTYPE(ife->ifm_media)) {
223 * If we're already in auto mode, just return.
225 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
227 (void) mii_phy_auto(sc, 0);
231 * XXX Not supported as a manual setting right now.
236 * BMCR data is stored in the ifmedia entry.
238 PHY_WRITE(sc, MII_ANAR,
239 mii_anar(ife->ifm_media));
240 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
246 * Only used for autonegotiation.
248 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
252 * Is the interface even up?
254 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
258 * Only retry autonegotiation every 5 seconds.
260 if (++sc->mii_ticks != 5)
266 * The RealTek PHY's autonegotiation doesn't need to be
267 * kicked; it continues in the background.
272 /* Update the media status. */
275 /* Callback if something changed. */
276 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
277 MIIBUS_STATCHG(sc->mii_dev);
278 sc->mii_active = mii->mii_media_active;
285 struct mii_softc *phy;
287 struct mii_data *mii = phy->mii_pdata;
288 int bmsr, bmcr, anlpar;
291 mii->mii_media_status = IFM_AVALID;
292 mii->mii_media_active = IFM_ETHER;
294 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
295 if (bmsr & BMSR_LINK)
296 mii->mii_media_status |= IFM_ACTIVE;
298 bmcr = PHY_READ(phy, MII_BMCR);
299 if (bmcr & BMCR_ISO) {
300 mii->mii_media_active |= IFM_NONE;
301 mii->mii_media_status = 0;
305 if (bmcr & BMCR_LOOP)
306 mii->mii_media_active |= IFM_LOOP;
308 if (bmcr & BMCR_AUTOEN) {
310 * NWay autonegotiation takes the highest-order common
311 * bit of the ANAR and ANLPAR (i.e. best media advertised
312 * both by us and our link partner).
314 if ((bmsr & BMSR_ACOMP) == 0) {
315 /* Erg, still trying, I guess... */
316 mii->mii_media_active |= IFM_NONE;
320 if ((anlpar = PHY_READ(phy, MII_ANAR) &
321 PHY_READ(phy, MII_ANLPAR))) {
322 if (anlpar & ANLPAR_T4)
323 mii->mii_media_active |= IFM_100_T4;
324 else if (anlpar & ANLPAR_TX_FD)
325 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
326 else if (anlpar & ANLPAR_TX)
327 mii->mii_media_active |= IFM_100_TX;
328 else if (anlpar & ANLPAR_10_FD)
329 mii->mii_media_active |= IFM_10_T|IFM_FDX;
330 else if (anlpar & ANLPAR_10)
331 mii->mii_media_active |= IFM_10_T;
333 mii->mii_media_active |= IFM_NONE;
337 * If the other side doesn't support NWAY, then the
338 * best we can do is determine if we have a 10Mbps or
339 * 100Mbps link. There's no way to know if the link
340 * is full or half duplex, so we default to half duplex
341 * and hope that the user is clever enough to manually
342 * change the media settings if we're wrong.
347 * The RealTek PHY supports non-NWAY link speed
348 * detection, however it does not report the link
349 * detection results via the ANLPAR or BMSR registers.
350 * (What? RealTek doesn't do things the way everyone
351 * else does? I'm just shocked, shocked I tell you.)
352 * To determine the link speed, we have to do one
355 * - If this is a standalone RealTek RTL8201(L) PHY,
356 * we can determine the link speed by testing bit 0
357 * in the magic, vendor-specific register at offset
360 * - If this is a RealTek MAC with integrated PHY, we
361 * can test the 'SPEED10' bit of the MAC's media status
364 parent = device_get_parent(phy->mii_dev);
365 if (strcmp(device_get_name(parent), "rl") != 0) {
366 if (PHY_READ(phy, 0x0019) & 0x01)
367 mii->mii_media_active |= IFM_100_TX;
369 mii->mii_media_active |= IFM_10_T;
371 if (PHY_READ(phy, RL_MEDIASTAT) &
372 RL_MEDIASTAT_SPEED10)
373 mii->mii_media_active |= IFM_10_T;
375 mii->mii_media_active |= IFM_100_TX;
379 mii->mii_media_active = mii_media_from_bmcr(bmcr);