1 /* $OpenBSD: rlphy.c,v 1.23 2006/05/16 02:24:45 brad Exp $ */
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.
34 * $FreeBSD: src/sys/dev/mii/rlphy.c,v 1.2.2.4 2002/11/08 21:53:49 semenu Exp $
38 * driver for RealTek 8139 internal PHYs
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/socket.h>
48 #include <net/if_arp.h>
49 #include <net/if_media.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_service(struct mii_softc *, struct mii_data *, int);
62 static void rlphy_status(struct mii_softc *);
64 static device_method_t rlphy_methods[] = {
65 /* device interface */
66 DEVMETHOD(device_probe, rlphy_probe),
67 DEVMETHOD(device_attach, rlphy_attach),
68 DEVMETHOD(device_detach, ukphy_detach),
69 DEVMETHOD(device_shutdown, bus_generic_shutdown),
73 static const struct mii_phydesc rlphys[] = {
74 MII_PHYDESC(REALTEK, RTL8201L),
75 MII_PHYDESC(ICPLUS, IP101),
79 static devclass_t rlphy_devclass;
81 static driver_t rlphy_driver = {
84 sizeof(struct mii_softc)
87 DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, NULL, NULL);
90 rlphy_probe(device_t dev)
92 struct mii_attach_args *ma = device_get_ivars(dev);
93 const struct mii_phydesc *mpd;
97 * A "real" phy should get preference, but on the 8139 there
98 * is no phyid register.
100 mpd = mii_phy_match(ma, rlphys);
102 device_set_desc(dev, mpd->mpd_name);
107 * RealTek PHY doesn't have vendor/device ID registers:
108 * the rl driver fakes up a return value of all zeros.
110 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
111 MII_MODEL(ma->mii_id2) != 0)
114 parent = device_get_parent(device_get_parent(dev));
117 * Make sure the parent is an `rl'.
119 if (strcmp(device_get_name(parent), "rl") != 0)
122 device_set_desc(dev, "RealTek internal media interface");
128 rlphy_attach(device_t dev)
130 struct mii_softc *sc;
131 struct mii_attach_args *ma;
132 struct mii_data *mii;
134 sc = device_get_softc(dev);
135 ma = device_get_ivars(dev);
136 mii_softc_init(sc, ma);
137 sc->mii_dev = device_get_parent(dev);
138 mii = device_get_softc(sc->mii_dev);
141 * The RealTek PHY can never be isolated, so never allow non-zero
144 if (mii->mii_instance != 0) {
145 device_printf(dev, "ignoring this PHY, non-zero instance\n");
149 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
151 sc->mii_inst = mii->mii_instance;
152 sc->mii_service = rlphy_service;
156 sc->mii_flags |= MIIF_NOISOLATE;
158 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
160 #if 0 /* See above. */
161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
165 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
171 * After PHY is reset, BMCR_AUTOEN will be cleared.
172 * If it is *not* turned on here, mii_pollstat() will
173 * lie about the active media until mii_mediachg() is
174 * called(in rl_init()).
176 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN);
178 sc->mii_capabilities =
179 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
180 device_printf(dev, " ");
181 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
182 kprintf("no media present");
184 mii_phy_add_media(sc);
187 MIIBUS_MEDIAINIT(sc->mii_dev);
192 rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
194 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
197 * We can't isolate the RealTek PHY, so it has to be the only one!
199 KASSERT(IFM_INST(ife->ifm_media) == sc->mii_inst,
200 ("rlphy_service: can't isolate RealTek PHY"));
208 * If the interface is not up, don't do anything.
210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
213 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_T4) {
215 * XXX Not supported as a manual setting right now.
220 mii_phy_set_media(sc);
225 * Is the interface even up?
227 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
231 * Only used for autonegotiation.
233 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
237 * The RealTek PHY's autonegotiation doesn't need to be
238 * kicked; it continues in the background.
243 /* Update the media status. */
246 /* Callback if something changed. */
247 mii_phy_update(sc, cmd);
252 rlphy_status(struct mii_softc *sc)
254 struct mii_data *mii = sc->mii_pdata;
255 int bmsr, bmcr, anlpar;
257 mii->mii_media_status = IFM_AVALID;
258 mii->mii_media_active = IFM_ETHER;
260 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
261 if (bmsr & BMSR_LINK)
262 mii->mii_media_status |= IFM_ACTIVE;
264 bmcr = PHY_READ(sc, MII_BMCR);
265 if (bmcr & BMCR_ISO) {
266 mii->mii_media_active |= IFM_NONE;
267 mii->mii_media_status = 0;
271 if (bmcr & BMCR_LOOP)
272 mii->mii_media_active |= IFM_LOOP;
274 if (bmcr & BMCR_AUTOEN) {
278 * NWay autonegotiation takes the highest-order common
279 * bit of the ANAR and ANLPAR (i.e. best media advertised
280 * both by us and our link partner).
282 if ((bmsr & BMSR_ACOMP) == 0) {
283 /* Erg, still trying, I guess... */
284 mii->mii_media_active |= IFM_NONE;
288 if ((anlpar = PHY_READ(sc, MII_ANAR) &
289 PHY_READ(sc, MII_ANLPAR))) {
290 if (anlpar & ANLPAR_T4)
291 mii->mii_media_active |= IFM_100_T4;
292 else if (anlpar & ANLPAR_TX_FD)
293 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
294 else if (anlpar & ANLPAR_TX)
295 mii->mii_media_active |= IFM_100_TX;
296 else if (anlpar & ANLPAR_10_FD)
297 mii->mii_media_active |= IFM_10_T|IFM_FDX;
298 else if (anlpar & ANLPAR_10)
299 mii->mii_media_active |= IFM_10_T;
301 mii->mii_media_active |= IFM_NONE;
305 * If the other side doesn't support NWAY, then the
306 * best we can do is determine if we have a 10Mbps or
307 * 100Mbps link. There's no way to know if the link
308 * is full or half duplex, so we default to half duplex
309 * and hope that the user is clever enough to manually
310 * change the media settings if we're wrong.
314 * The RealTek PHY supports non-NWAY link speed
315 * detection, however it does not report the link
316 * detection results via the ANLPAR or BMSR registers.
317 * (What? RealTek doesn't do things the way everyone
318 * else does? I'm just shocked, shocked I tell you.)
319 * To determine the link speed, we have to do one
322 * - If this is a standalone RealTek RTL8201(L) PHY,
323 * we can determine the link speed by testing bit 0
324 * in the magic, vendor-specific register at offset
327 * - If this is a RealTek MAC with integrated PHY, we
328 * can test the 'SPEED10' bit of the MAC's media status
331 parent = device_get_parent(sc->mii_dev);
332 if (strcmp(device_get_name(parent), "rl") != 0) {
333 if (PHY_READ(sc, 0x0019) & 0x01)
334 mii->mii_media_active |= IFM_100_TX;
336 mii->mii_media_active |= IFM_10_T;
338 if (PHY_READ(sc, RL_MEDIASTAT) &
339 RL_MEDIASTAT_SPEED10)
340 mii->mii_media_active |= IFM_10_T;
342 mii->mii_media_active |= IFM_100_TX;
345 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;