2 * Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
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 unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * Driver for the RDC Semiconductor R6040 10/100 PHY.
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/socket.h>
43 #include <net/if_media.h>
45 #include <dev/mii/mii.h>
46 #include <dev/mii/miivar.h>
49 #include <dev/mii/rdcphyreg.h>
51 #include "miibus_if.h"
53 static device_probe_t rdcphy_probe;
54 static device_attach_t rdcphy_attach;
57 struct mii_softc mii_sc;
60 #define RDCPHY_MANNEG_TICK 3
63 static device_method_t rdcphy_methods[] = {
64 /* device interface */
65 DEVMETHOD(device_probe, rdcphy_probe),
66 DEVMETHOD(device_attach, rdcphy_attach),
67 DEVMETHOD(device_detach, mii_phy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 static devclass_t rdcphy_devclass;
74 static driver_t rdcphy_driver = {
77 sizeof(struct rdcphy_softc)
80 DRIVER_MODULE(rdcphy, miibus, rdcphy_driver, rdcphy_devclass, 0, 0);
82 static int rdcphy_service(struct mii_softc *, struct mii_data *, int);
83 static void rdcphy_status(struct mii_softc *);
85 static const struct mii_phydesc rdcphys[] = {
86 MII_PHY_DESC(RDC, R6040),
91 rdcphy_probe(device_t dev)
94 return (mii_phy_dev_probe(dev, rdcphys, BUS_PROBE_DEFAULT));
98 rdcphy_attach(device_t dev)
100 struct rdcphy_softc *rsc;
101 struct mii_softc *sc;
102 struct mii_attach_args *ma;
103 struct mii_data *mii;
105 rsc = device_get_softc(dev);
107 ma = device_get_ivars(dev);
108 sc->mii_dev = device_get_parent(dev);
110 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
112 sc->mii_flags = miibus_get_flags(dev);
113 sc->mii_inst = mii->mii_instance++;
114 sc->mii_phy = ma->mii_phyno;
115 sc->mii_service = rdcphy_service;
118 sc->mii_flags |= MIIF_NOMANPAUSE;
120 rsc->mii_model = MII_MODEL(ma->mii_id2);
122 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
123 MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2),
124 MII_REV(ma->mii_id2));
128 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
129 if (sc->mii_capabilities & BMSR_EXTSTAT)
130 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
131 device_printf(dev, " ");
132 mii_phy_add_media(sc);
135 MIIBUS_MEDIAINIT(sc->mii_dev);
140 rdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142 struct rdcphy_softc *rsc;
143 struct ifmedia_entry *ife;
145 rsc = (struct rdcphy_softc *)sc;
146 ife = mii->mii_media.ifm_cur;
154 * If the interface is not up, don't do anything.
156 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
159 mii_phy_setmedia(sc);
160 switch (IFM_SUBTYPE(ife->ifm_media)) {
164 * Report fake lost link event to parent
165 * driver. This will stop MAC of parent
166 * driver and make it possible to reconfigure
167 * MAC after completion of link establishment.
168 * Note, the parent MAC seems to require
169 * restarting MAC when underlying any PHY
170 * configuration was changed even if the
171 * resolved speed/duplex was not changed at
174 mii->mii_media_status = 0;
175 mii->mii_media_active = IFM_ETHER | IFM_NONE;
176 rsc->mii_link_tick = RDCPHY_MANNEG_TICK;
177 /* Immediately report link down. */
178 mii_phy_update(sc, MII_MEDIACHG);
186 if (mii_phy_tick(sc) == EJUSTRETURN)
188 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
190 * It seems the PHY hardware does not correctly
191 * report link status changes when manual link
192 * configuration is in progress. It is also
193 * possible for the PHY to complete establishing
194 * a link within one second such that mii(4)
195 * did not notice the link change. To workaround
196 * the issue, emulate lost link event and wait
197 * for 3 seconds when manual link configuration
198 * is in progress. 3 seconds would be long
199 * enough to absorb transient link flips.
201 if (rsc->mii_link_tick > 0) {
202 rsc->mii_link_tick--;
209 /* Update the media status. */
212 /* Callback if something changed. */
213 mii_phy_update(sc, cmd);
218 rdcphy_status(struct mii_softc *sc)
220 struct mii_data *mii;
221 struct ifmedia_entry *ife;
222 int bmsr, bmcr, physts;
225 ife = mii->mii_media.ifm_cur;
227 mii->mii_media_status = IFM_AVALID;
228 mii->mii_media_active = IFM_ETHER;
230 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
231 physts = PHY_READ(sc, MII_RDCPHY_STATUS);
233 if ((physts & STATUS_LINK_UP) != 0)
234 mii->mii_media_status |= IFM_ACTIVE;
236 bmcr = PHY_READ(sc, MII_BMCR);
237 if ((bmcr & BMCR_ISO) != 0) {
238 mii->mii_media_active |= IFM_NONE;
239 mii->mii_media_status = 0;
243 if ((bmcr & BMCR_LOOP) != 0)
244 mii->mii_media_active |= IFM_LOOP;
246 if ((bmcr & BMCR_AUTOEN) != 0) {
247 if ((bmsr & BMSR_ACOMP) == 0) {
248 /* Erg, still trying, I guess... */
249 mii->mii_media_active |= IFM_NONE;
254 switch (physts & STATUS_SPEED_MASK) {
255 case STATUS_SPEED_100:
256 mii->mii_media_active |= IFM_100_TX;
258 case STATUS_SPEED_10:
259 mii->mii_media_active |= IFM_10_T;
262 mii->mii_media_active |= IFM_NONE;
265 if ((physts & STATUS_FULL_DUPLEX) != 0)
266 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
268 mii->mii_media_active |= IFM_HDX;