2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1997, 1998, 1999
5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
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/module.h>
46 #include <sys/socket.h>
48 #include <sys/taskqueue.h> /* XXXGL: if_rlreg.h contamination */
51 #include <net/if_arp.h>
52 #include <net/if_media.h>
54 #include <dev/mii/mii.h>
55 #include <dev/mii/miivar.h>
58 #include <machine/bus.h>
59 #include <dev/rl/if_rlreg.h>
61 #include "miibus_if.h"
63 static int rlphy_probe(device_t);
64 static int rlphy_attach(device_t);
66 static device_method_t rlphy_methods[] = {
67 /* device interface */
68 DEVMETHOD(device_probe, rlphy_probe),
69 DEVMETHOD(device_attach, rlphy_attach),
70 DEVMETHOD(device_detach, mii_phy_detach),
71 DEVMETHOD(device_shutdown, bus_generic_shutdown),
75 static devclass_t rlphy_devclass;
77 static driver_t rlphy_driver = {
80 sizeof(struct mii_softc)
83 DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
85 static int rlphy_service(struct mii_softc *, struct mii_data *, int);
86 static void rlphy_status(struct mii_softc *);
89 * RealTek internal PHYs don't have vendor/device ID registers;
90 * re(4) and rl(4) fake up a return value of all zeros.
92 static const struct mii_phydesc rlintphys[] = {
93 { 0, 0, "RealTek internal media interface" },
97 static const struct mii_phydesc rlphys[] = {
98 MII_PHY_DESC(yyREALTEK, RTL8201L),
99 MII_PHY_DESC(REALTEK, RTL8201E),
100 MII_PHY_DESC(xxICPLUS, IP101),
104 static const struct mii_phy_funcs rlphy_funcs = {
111 rlphy_probe(device_t dev)
115 rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT);
119 if (mii_dev_mac_match(dev, "rl") || mii_dev_mac_match(dev, "re"))
120 return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT));
125 rlphy_attach(device_t dev)
129 * The RealTek PHY can never be isolated.
131 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
137 rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
145 mii_phy_setmedia(sc);
150 * The RealTek PHY's autonegotiation doesn't need to be
151 * kicked; it continues in the background.
156 /* Update the media status. */
159 /* Callback if something changed. */
160 mii_phy_update(sc, cmd);
165 rlphy_status(struct mii_softc *phy)
167 struct mii_data *mii = phy->mii_pdata;
168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
169 int bmsr, bmcr, anlpar;
171 mii->mii_media_status = IFM_AVALID;
172 mii->mii_media_active = IFM_ETHER;
174 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
175 if (bmsr & BMSR_LINK)
176 mii->mii_media_status |= IFM_ACTIVE;
178 bmcr = PHY_READ(phy, MII_BMCR);
179 if (bmcr & BMCR_ISO) {
180 mii->mii_media_active |= IFM_NONE;
181 mii->mii_media_status = 0;
185 if (bmcr & BMCR_LOOP)
186 mii->mii_media_active |= IFM_LOOP;
188 if (bmcr & BMCR_AUTOEN) {
190 * NWay autonegotiation takes the highest-order common
191 * bit of the ANAR and ANLPAR (i.e. best media advertised
192 * both by us and our link partner).
194 if ((bmsr & BMSR_ACOMP) == 0) {
195 /* Erg, still trying, I guess... */
196 mii->mii_media_active |= IFM_NONE;
200 if ((anlpar = PHY_READ(phy, MII_ANAR) &
201 PHY_READ(phy, MII_ANLPAR))) {
202 if (anlpar & ANLPAR_TX_FD)
203 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
204 else if (anlpar & ANLPAR_T4)
205 mii->mii_media_active |= IFM_100_T4|IFM_HDX;
206 else if (anlpar & ANLPAR_TX)
207 mii->mii_media_active |= IFM_100_TX|IFM_HDX;
208 else if (anlpar & ANLPAR_10_FD)
209 mii->mii_media_active |= IFM_10_T|IFM_FDX;
210 else if (anlpar & ANLPAR_10)
211 mii->mii_media_active |= IFM_10_T|IFM_HDX;
213 mii->mii_media_active |= IFM_NONE;
214 if ((mii->mii_media_active & IFM_FDX) != 0)
215 mii->mii_media_active |=
216 mii_phy_flowstatus(phy);
220 * If the other side doesn't support NWAY, then the
221 * best we can do is determine if we have a 10Mbps or
222 * 100Mbps link. There's no way to know if the link
223 * is full or half duplex, so we default to half duplex
224 * and hope that the user is clever enough to manually
225 * change the media settings if we're wrong.
229 * The RealTek PHY supports non-NWAY link speed
230 * detection, however it does not report the link
231 * detection results via the ANLPAR or BMSR registers.
232 * (What? RealTek doesn't do things the way everyone
233 * else does? I'm just shocked, shocked I tell you.)
234 * To determine the link speed, we have to do one
237 * - If this is a standalone RealTek RTL8201(L) or
238 * workalike PHY, we can determine the link speed by
239 * testing bit 0 in the magic, vendor-specific register
242 * - If this is a RealTek MAC with integrated PHY, we
243 * can test the 'SPEED10' bit of the MAC's media status
246 if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) {
247 if (PHY_READ(phy, 0x0019) & 0x01)
248 mii->mii_media_active |= IFM_100_TX;
250 mii->mii_media_active |= IFM_10_T;
252 if (PHY_READ(phy, RL_MEDIASTAT) &
253 RL_MEDIASTAT_SPEED10)
254 mii->mii_media_active |= IFM_10_T;
256 mii->mii_media_active |= IFM_100_TX;
258 mii->mii_media_active |= IFM_HDX;
260 mii->mii_media_active = ife->ifm_media;