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 1.3 2003/08/07 21:17:03 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 __P((device_t));
62 static int rlphy_attach __P((device_t));
63 static int rlphy_detach __P((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 __P((struct mii_softc *, struct mii_data *, int));
85 void rlphy_status __P((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);
131 sc->mii_dev = device_get_parent(dev);
132 mii = device_get_softc(sc->mii_dev);
135 * The RealTek PHY can never be isolated, so never allow non-zero
138 if (mii->mii_instance != 0) {
139 device_printf(dev, "ignoring this PHY, non-zero instance\n");
143 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
145 sc->mii_inst = mii->mii_instance;
146 sc->mii_phy = ma->mii_phyno;
147 sc->mii_service = rlphy_service;
151 sc->mii_flags |= MIIF_NOISOLATE;
153 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
155 #if 0 /* See above. */
156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
161 BMCR_LOOP|BMCR_S100);
165 sc->mii_capabilities =
166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
167 device_printf(dev, " ");
168 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
169 printf("no media present");
171 mii_add_media(mii, sc->mii_capabilities,
175 MIIBUS_MEDIAINIT(sc->mii_dev);
179 static int rlphy_detach(dev)
182 struct mii_softc *sc;
183 struct mii_data *mii;
185 sc = device_get_softc(dev);
186 mii = device_get_softc(device_get_softc(dev));
187 mii_phy_auto_stop(sc);
189 LIST_REMOVE(sc, mii_list);
195 rlphy_service(sc, mii, cmd)
196 struct mii_softc *sc;
197 struct mii_data *mii;
200 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
203 * We can't isolate the RealTek PHY, so it has to be the only one!
205 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
206 panic("rlphy_service: can't isolate RealTek PHY");
214 * If the interface is not up, don't do anything.
216 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
219 switch (IFM_SUBTYPE(ife->ifm_media)) {
222 * If we're already in auto mode, just return.
224 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
226 (void) mii_phy_auto(sc, 0);
230 * XXX Not supported as a manual setting right now.
235 * BMCR data is stored in the ifmedia entry.
237 PHY_WRITE(sc, MII_ANAR,
238 mii_anar(ife->ifm_media));
239 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
245 * Only used for autonegotiation.
247 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
251 * Is the interface even up?
253 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
257 * Only retry autonegotiation every 5 seconds.
259 if (++sc->mii_ticks != 5)
265 * The RealTek PHY's autonegotiation doesn't need to be
266 * kicked; it continues in the background.
271 /* Update the media status. */
274 /* Callback if something changed. */
275 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
276 MIIBUS_STATCHG(sc->mii_dev);
277 sc->mii_active = mii->mii_media_active;
284 struct mii_softc *phy;
286 struct mii_data *mii = phy->mii_pdata;
287 int bmsr, bmcr, anlpar;
290 mii->mii_media_status = IFM_AVALID;
291 mii->mii_media_active = IFM_ETHER;
293 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
294 if (bmsr & BMSR_LINK)
295 mii->mii_media_status |= IFM_ACTIVE;
297 bmcr = PHY_READ(phy, MII_BMCR);
298 if (bmcr & BMCR_ISO) {
299 mii->mii_media_active |= IFM_NONE;
300 mii->mii_media_status = 0;
304 if (bmcr & BMCR_LOOP)
305 mii->mii_media_active |= IFM_LOOP;
307 if (bmcr & BMCR_AUTOEN) {
309 * NWay autonegotiation takes the highest-order common
310 * bit of the ANAR and ANLPAR (i.e. best media advertised
311 * both by us and our link partner).
313 if ((bmsr & BMSR_ACOMP) == 0) {
314 /* Erg, still trying, I guess... */
315 mii->mii_media_active |= IFM_NONE;
319 if ((anlpar = PHY_READ(phy, MII_ANAR) &
320 PHY_READ(phy, MII_ANLPAR))) {
321 if (anlpar & ANLPAR_T4)
322 mii->mii_media_active |= IFM_100_T4;
323 else if (anlpar & ANLPAR_TX_FD)
324 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
325 else if (anlpar & ANLPAR_TX)
326 mii->mii_media_active |= IFM_100_TX;
327 else if (anlpar & ANLPAR_10_FD)
328 mii->mii_media_active |= IFM_10_T|IFM_FDX;
329 else if (anlpar & ANLPAR_10)
330 mii->mii_media_active |= IFM_10_T;
332 mii->mii_media_active |= IFM_NONE;
336 * If the other side doesn't support NWAY, then the
337 * best we can do is determine if we have a 10Mbps or
338 * 100Mbps link. There's no way to know if the link
339 * is full or half duplex, so we default to half duplex
340 * and hope that the user is clever enough to manually
341 * change the media settings if we're wrong.
346 * The RealTek PHY supports non-NWAY link speed
347 * detection, however it does not report the link
348 * detection results via the ANLPAR or BMSR registers.
349 * (What? RealTek doesn't do things the way everyone
350 * else does? I'm just shocked, shocked I tell you.)
351 * To determine the link speed, we have to do one
354 * - If this is a standalone RealTek RTL8201(L) PHY,
355 * we can determine the link speed by testing bit 0
356 * in the magic, vendor-specific register at offset
359 * - If this is a RealTek MAC with integrated PHY, we
360 * can test the 'SPEED10' bit of the MAC's media status
363 parent = device_get_parent(phy->mii_dev);
364 if (strcmp(device_get_name(parent), "rl") != 0) {
365 if (PHY_READ(phy, 0x0019) & 0x01)
366 mii->mii_media_active |= IFM_100_TX;
368 mii->mii_media_active |= IFM_10_T;
370 if (PHY_READ(phy, RL_MEDIASTAT) &
371 RL_MEDIASTAT_SPEED10)
372 mii->mii_media_active |= IFM_10_T;
374 mii->mii_media_active |= IFM_100_TX;
378 mii->mii_media_active = mii_media_from_bmcr(bmcr);