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 $
36 * driver for RealTek 8139 internal PHYs
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
46 #include <net/if_arp.h>
47 #include <net/if_media.h>
49 #include <dev/mii/mii.h>
50 #include <dev/mii/miivar.h>
51 #include <dev/mii/miidevs.h>
53 #include <machine/bus.h>
54 #include <pci/if_rlreg.h>
56 #include "miibus_if.h"
59 static const char rcsid[] =
60 "$FreeBSD: src/sys/dev/mii/rlphy.c,v 1.2.2.4 2002/11/08 21:53:49 semenu Exp $";
63 static int rlphy_probe __P((device_t));
64 static int rlphy_attach __P((device_t));
65 static int rlphy_detach __P((device_t));
67 static device_method_t rlphy_methods[] = {
68 /* device interface */
69 DEVMETHOD(device_probe, rlphy_probe),
70 DEVMETHOD(device_attach, rlphy_attach),
71 DEVMETHOD(device_detach, rlphy_detach),
72 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 static devclass_t rlphy_devclass;
78 static driver_t rlphy_driver = {
81 sizeof(struct mii_softc)
84 DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
86 int rlphy_service __P((struct mii_softc *, struct mii_data *, int));
87 void rlphy_status __P((struct mii_softc *));
89 static int rlphy_probe(dev)
92 struct mii_attach_args *ma;
95 ma = device_get_ivars(dev);
96 parent = device_get_parent(device_get_parent(dev));
98 /* Test for RealTek 8201L PHY */
99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK &&
100 MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) {
101 device_set_desc(dev, MII_STR_REALTEK_RTL8201L);
106 * RealTek PHY doesn't have vendor/device ID registers:
107 * the rl driver fakes up a return value of all zeros.
109 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
110 MII_MODEL(ma->mii_id2) != 0)
114 * Make sure the parent is an `rl'.
116 if (strcmp(device_get_name(parent), "rl") != 0)
119 device_set_desc(dev, "RealTek internal media interface");
124 static int rlphy_attach(dev)
127 struct mii_softc *sc;
128 struct mii_attach_args *ma;
129 struct mii_data *mii;
131 sc = device_get_softc(dev);
132 ma = device_get_ivars(dev);
133 sc->mii_dev = device_get_parent(dev);
134 mii = device_get_softc(sc->mii_dev);
137 * The RealTek PHY can never be isolated, so never allow non-zero
140 if (mii->mii_instance != 0) {
141 device_printf(dev, "ignoring this PHY, non-zero instance\n");
145 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
147 sc->mii_inst = mii->mii_instance;
148 sc->mii_phy = ma->mii_phyno;
149 sc->mii_service = rlphy_service;
153 sc->mii_flags |= MIIF_NOISOLATE;
155 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
157 #if 0 /* See above. */
158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
163 BMCR_LOOP|BMCR_S100);
167 sc->mii_capabilities =
168 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
169 device_printf(dev, " ");
170 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
171 printf("no media present");
173 mii_add_media(mii, sc->mii_capabilities,
177 MIIBUS_MEDIAINIT(sc->mii_dev);
181 static int rlphy_detach(dev)
184 struct mii_softc *sc;
185 struct mii_data *mii;
187 sc = device_get_softc(dev);
188 mii = device_get_softc(device_get_softc(dev));
189 mii_phy_auto_stop(sc);
191 LIST_REMOVE(sc, mii_list);
197 rlphy_service(sc, mii, cmd)
198 struct mii_softc *sc;
199 struct mii_data *mii;
202 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
205 * We can't isolate the RealTek PHY, so it has to be the only one!
207 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
208 panic("rlphy_service: can't isolate RealTek PHY");
216 * If the interface is not up, don't do anything.
218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
221 switch (IFM_SUBTYPE(ife->ifm_media)) {
224 * If we're already in auto mode, just return.
226 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
228 (void) mii_phy_auto(sc, 0);
232 * XXX Not supported as a manual setting right now.
237 * BMCR data is stored in the ifmedia entry.
239 PHY_WRITE(sc, MII_ANAR,
240 mii_anar(ife->ifm_media));
241 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
247 * Only used for autonegotiation.
249 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
253 * Is the interface even up?
255 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
259 * Only retry autonegotiation every 5 seconds.
261 if (++sc->mii_ticks != 5)
267 * The RealTek PHY's autonegotiation doesn't need to be
268 * kicked; it continues in the background.
273 /* Update the media status. */
276 /* Callback if something changed. */
277 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
278 MIIBUS_STATCHG(sc->mii_dev);
279 sc->mii_active = mii->mii_media_active;
286 struct mii_softc *phy;
288 struct mii_data *mii = phy->mii_pdata;
289 int bmsr, bmcr, anlpar;
292 mii->mii_media_status = IFM_AVALID;
293 mii->mii_media_active = IFM_ETHER;
295 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
296 if (bmsr & BMSR_LINK)
297 mii->mii_media_status |= IFM_ACTIVE;
299 bmcr = PHY_READ(phy, MII_BMCR);
300 if (bmcr & BMCR_ISO) {
301 mii->mii_media_active |= IFM_NONE;
302 mii->mii_media_status = 0;
306 if (bmcr & BMCR_LOOP)
307 mii->mii_media_active |= IFM_LOOP;
309 if (bmcr & BMCR_AUTOEN) {
311 * NWay autonegotiation takes the highest-order common
312 * bit of the ANAR and ANLPAR (i.e. best media advertised
313 * both by us and our link partner).
315 if ((bmsr & BMSR_ACOMP) == 0) {
316 /* Erg, still trying, I guess... */
317 mii->mii_media_active |= IFM_NONE;
321 if ((anlpar = PHY_READ(phy, MII_ANAR) &
322 PHY_READ(phy, MII_ANLPAR))) {
323 if (anlpar & ANLPAR_T4)
324 mii->mii_media_active |= IFM_100_T4;
325 else if (anlpar & ANLPAR_TX_FD)
326 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
327 else if (anlpar & ANLPAR_TX)
328 mii->mii_media_active |= IFM_100_TX;
329 else if (anlpar & ANLPAR_10_FD)
330 mii->mii_media_active |= IFM_10_T|IFM_FDX;
331 else if (anlpar & ANLPAR_10)
332 mii->mii_media_active |= IFM_10_T;
334 mii->mii_media_active |= IFM_NONE;
338 * If the other side doesn't support NWAY, then the
339 * best we can do is determine if we have a 10Mbps or
340 * 100Mbps link. There's no way to know if the link
341 * is full or half duplex, so we default to half duplex
342 * and hope that the user is clever enough to manually
343 * change the media settings if we're wrong.
348 * The RealTek PHY supports non-NWAY link speed
349 * detection, however it does not report the link
350 * detection results via the ANLPAR or BMSR registers.
351 * (What? RealTek doesn't do things the way everyone
352 * else does? I'm just shocked, shocked I tell you.)
353 * To determine the link speed, we have to do one
356 * - If this is a standalone RealTek RTL8201(L) PHY,
357 * we can determine the link speed by testing bit 0
358 * in the magic, vendor-specific register at offset
361 * - If this is a RealTek MAC with integrated PHY, we
362 * can test the 'SPEED10' bit of the MAC's media status
365 parent = device_get_parent(phy->mii_dev);
366 if (strcmp(device_get_name(parent), "rl") != 0) {
367 if (PHY_READ(phy, 0x0019) & 0x01)
368 mii->mii_media_active |= IFM_100_TX;
370 mii->mii_media_active |= IFM_10_T;
372 if (PHY_READ(phy, RL_MEDIASTAT) &
373 RL_MEDIASTAT_SPEED10)
374 mii->mii_media_active |= IFM_10_T;
376 mii->mii_media_active |= IFM_100_TX;
380 mii->mii_media_active = mii_media_from_bmcr(bmcr);