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 1.6 2005/02/21 18:40:36 joerg Exp $
37 * driver for RealTek 8139 internal PHYs
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kernel.h>
43 #include <sys/socket.h>
47 #include <net/if_arp.h>
48 #include <net/if_media.h>
54 #include <machine/bus.h>
55 #include "../rl/if_rlreg.h"
57 #include "miibus_if.h"
59 static int rlphy_probe (device_t);
60 static int rlphy_attach (device_t);
61 static int rlphy_detach (device_t);
63 static device_method_t rlphy_methods[] = {
64 /* device interface */
65 DEVMETHOD(device_probe, rlphy_probe),
66 DEVMETHOD(device_attach, rlphy_attach),
67 DEVMETHOD(device_detach, rlphy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 static devclass_t rlphy_devclass;
74 static driver_t rlphy_driver = {
77 sizeof(struct mii_softc)
80 DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
82 int rlphy_service (struct mii_softc *, struct mii_data *, int);
83 void rlphy_status (struct mii_softc *);
85 static int rlphy_probe(dev)
88 struct mii_attach_args *ma;
91 ma = device_get_ivars(dev);
92 parent = device_get_parent(device_get_parent(dev));
94 /* Test for RealTek 8201L PHY */
95 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK &&
96 MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) {
97 device_set_desc(dev, MII_STR_REALTEK_RTL8201L);
102 * RealTek PHY doesn't have vendor/device ID registers:
103 * the rl driver fakes up a return value of all zeros.
105 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
106 MII_MODEL(ma->mii_id2) != 0)
110 * Make sure the parent is an `rl'.
112 if (strcmp(device_get_name(parent), "rl") != 0)
115 device_set_desc(dev, "RealTek internal media interface");
120 static int rlphy_attach(dev)
123 struct mii_softc *sc;
124 struct mii_attach_args *ma;
125 struct mii_data *mii;
127 sc = device_get_softc(dev);
128 ma = device_get_ivars(dev);
130 sc->mii_dev = device_get_parent(dev);
131 mii = device_get_softc(sc->mii_dev);
134 * The RealTek PHY can never be isolated, so never allow non-zero
137 if (mii->mii_instance != 0) {
138 device_printf(dev, "ignoring this PHY, non-zero instance\n");
142 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
144 sc->mii_inst = mii->mii_instance;
145 sc->mii_phy = ma->mii_phyno;
146 sc->mii_service = rlphy_service;
150 sc->mii_flags |= MIIF_NOISOLATE;
152 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
154 #if 0 /* See above. */
155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
160 BMCR_LOOP|BMCR_S100);
164 sc->mii_capabilities =
165 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
166 device_printf(dev, " ");
167 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
168 printf("no media present");
170 mii_add_media(mii, sc->mii_capabilities,
174 MIIBUS_MEDIAINIT(sc->mii_dev);
178 static int rlphy_detach(dev)
181 struct mii_softc *sc;
182 struct mii_data *mii;
184 sc = device_get_softc(dev);
185 mii = device_get_softc(device_get_softc(dev));
186 mii_phy_auto_stop(sc);
188 LIST_REMOVE(sc, mii_list);
194 rlphy_service(sc, mii, cmd)
195 struct mii_softc *sc;
196 struct mii_data *mii;
199 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
202 * We can't isolate the RealTek PHY, so it has to be the only one!
204 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
205 panic("rlphy_service: can't isolate RealTek PHY");
213 * If the interface is not up, don't do anything.
215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
218 switch (IFM_SUBTYPE(ife->ifm_media)) {
221 * If we're already in auto mode, just return.
223 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
225 (void) mii_phy_auto(sc, 0);
229 * XXX Not supported as a manual setting right now.
234 * BMCR data is stored in the ifmedia entry.
236 PHY_WRITE(sc, MII_ANAR,
237 mii_anar(ife->ifm_media));
238 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
244 * Only used for autonegotiation.
246 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
250 * Is the interface even up?
252 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
256 * Only retry autonegotiation every 5 seconds.
258 if (++sc->mii_ticks != 5)
264 * The RealTek PHY's autonegotiation doesn't need to be
265 * kicked; it continues in the background.
270 /* Update the media status. */
273 /* Callback if something changed. */
274 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
275 MIIBUS_STATCHG(sc->mii_dev);
276 sc->mii_active = mii->mii_media_active;
283 struct mii_softc *phy;
285 struct mii_data *mii = phy->mii_pdata;
286 int bmsr, bmcr, anlpar;
289 mii->mii_media_status = IFM_AVALID;
290 mii->mii_media_active = IFM_ETHER;
292 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
293 if (bmsr & BMSR_LINK)
294 mii->mii_media_status |= IFM_ACTIVE;
296 bmcr = PHY_READ(phy, MII_BMCR);
297 if (bmcr & BMCR_ISO) {
298 mii->mii_media_active |= IFM_NONE;
299 mii->mii_media_status = 0;
303 if (bmcr & BMCR_LOOP)
304 mii->mii_media_active |= IFM_LOOP;
306 if (bmcr & BMCR_AUTOEN) {
308 * NWay autonegotiation takes the highest-order common
309 * bit of the ANAR and ANLPAR (i.e. best media advertised
310 * both by us and our link partner).
312 if ((bmsr & BMSR_ACOMP) == 0) {
313 /* Erg, still trying, I guess... */
314 mii->mii_media_active |= IFM_NONE;
318 if ((anlpar = PHY_READ(phy, MII_ANAR) &
319 PHY_READ(phy, MII_ANLPAR))) {
320 if (anlpar & ANLPAR_T4)
321 mii->mii_media_active |= IFM_100_T4;
322 else if (anlpar & ANLPAR_TX_FD)
323 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
324 else if (anlpar & ANLPAR_TX)
325 mii->mii_media_active |= IFM_100_TX;
326 else if (anlpar & ANLPAR_10_FD)
327 mii->mii_media_active |= IFM_10_T|IFM_FDX;
328 else if (anlpar & ANLPAR_10)
329 mii->mii_media_active |= IFM_10_T;
331 mii->mii_media_active |= IFM_NONE;
335 * If the other side doesn't support NWAY, then the
336 * best we can do is determine if we have a 10Mbps or
337 * 100Mbps link. There's no way to know if the link
338 * is full or half duplex, so we default to half duplex
339 * and hope that the user is clever enough to manually
340 * change the media settings if we're wrong.
345 * The RealTek PHY supports non-NWAY link speed
346 * detection, however it does not report the link
347 * detection results via the ANLPAR or BMSR registers.
348 * (What? RealTek doesn't do things the way everyone
349 * else does? I'm just shocked, shocked I tell you.)
350 * To determine the link speed, we have to do one
353 * - If this is a standalone RealTek RTL8201(L) PHY,
354 * we can determine the link speed by testing bit 0
355 * in the magic, vendor-specific register at offset
358 * - If this is a RealTek MAC with integrated PHY, we
359 * can test the 'SPEED10' bit of the MAC's media status
362 parent = device_get_parent(phy->mii_dev);
363 if (strcmp(device_get_name(parent), "rl") != 0) {
364 if (PHY_READ(phy, 0x0019) & 0x01)
365 mii->mii_media_active |= IFM_100_TX;
367 mii->mii_media_active |= IFM_10_T;
369 if (PHY_READ(phy, RL_MEDIASTAT) &
370 RL_MEDIASTAT_SPEED10)
371 mii->mii_media_active |= IFM_10_T;
373 mii->mii_media_active |= IFM_100_TX;
377 mii->mii_media_active = mii_media_from_bmcr(bmcr);