2 * Copyright (c) 2001 Wind River Systems
4 * Bill Paul <wpaul@bsdi.com>. All rights reserved.
5 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by Bill Paul.
23 * 4. Neither the name of the author nor the names of any co-contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
37 * THE POSSIBILITY OF SUCH DAMAGE.
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
44 * Driver for the National Semiconductor DP83861, DP83865 and DP83891
46 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf
47 * and at: http://www.national.com/ds/DP/DP83865.pdf
49 * The DP83891 is the older NS GigE PHY which isn't being sold
50 * anymore. The DP83861 is its replacement, which is an 'enhanced'
51 * firmware driven component. The major difference between the
52 * two is that the DP83891 can't generate interrupts, while the
53 * 83861 can (probably it wasn't originally designed to do this, but
54 * it can now thanks to firmware updates). The DP83861 also allows
55 * access to its internal RAM via indirect register access. The
56 * DP83865 is an ultra low power version of the DP83861 and DP83891.
59 #include <sys/param.h>
60 #include <sys/systm.h>
61 #include <sys/kernel.h>
62 #include <sys/module.h>
63 #include <sys/socket.h>
67 #include <net/if_media.h>
69 #include <dev/mii/mii.h>
70 #include <dev/mii/miivar.h>
73 #include <dev/mii/nsgphyreg.h>
75 #include "miibus_if.h"
77 static int nsgphy_probe(device_t);
78 static int nsgphy_attach(device_t);
80 static device_method_t nsgphy_methods[] = {
81 /* device interface */
82 DEVMETHOD(device_probe, nsgphy_probe),
83 DEVMETHOD(device_attach, nsgphy_attach),
84 DEVMETHOD(device_detach, mii_phy_detach),
85 DEVMETHOD(device_shutdown, bus_generic_shutdown),
89 static devclass_t nsgphy_devclass;
91 static driver_t nsgphy_driver = {
94 sizeof(struct mii_softc)
97 DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0);
99 static int nsgphy_service(struct mii_softc *, struct mii_data *,int);
100 static void nsgphy_status(struct mii_softc *);
102 static const struct mii_phydesc nsgphys[] = {
103 MII_PHY_DESC(NATSEMI, DP83861),
104 MII_PHY_DESC(NATSEMI, DP83865),
105 MII_PHY_DESC(NATSEMI, DP83891),
110 nsgphy_probe(device_t dev)
113 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT));
117 nsgphy_attach(device_t dev)
119 struct mii_softc *sc;
120 struct mii_attach_args *ma;
121 struct mii_data *mii;
123 sc = device_get_softc(dev);
124 ma = device_get_ivars(dev);
126 device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2));
127 device_printf(dev, " ");
128 sc->mii_dev = device_get_parent(dev);
129 mii = device_get_softc(sc->mii_dev);
130 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
132 sc->mii_inst = mii->mii_instance;
133 sc->mii_phy = ma->mii_phyno;
134 sc->mii_service = nsgphy_service;
142 * NB: the PHY has the 10baseT BMSR bits hard-wired to 0,
143 * even though it supports 10baseT.
145 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) |
146 (BMSR_10TFDX | BMSR_10THDX)) & ma->mii_capmask;
147 if (sc->mii_capabilities & BMSR_EXTSTAT)
148 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
150 mii_phy_add_media(sc);
153 MIIBUS_MEDIAINIT(sc->mii_dev);
158 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
166 * If we're not polling our PHY instance, just return.
168 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
174 * If the media indicates a different PHY instance,
177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
178 reg = PHY_READ(sc, MII_BMCR);
179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
184 * If the interface is not up, don't do anything.
186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
189 mii_phy_setmedia(sc);
194 * If we're not currently selected, just return.
196 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
199 if (mii_phy_tick(sc) == EJUSTRETURN)
204 /* Update the media status. */
207 /* Callback if something changed. */
208 mii_phy_update(sc, cmd);
213 nsgphy_status(struct mii_softc *sc)
215 struct mii_data *mii = sc->mii_pdata;
216 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
217 int bmsr, bmcr, physup, gtsr;
219 mii->mii_media_status = IFM_AVALID;
220 mii->mii_media_active = IFM_ETHER;
222 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
224 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP);
226 if (physup & PHY_SUP_LINK)
227 mii->mii_media_status |= IFM_ACTIVE;
229 bmcr = PHY_READ(sc, MII_BMCR);
230 if (bmcr & BMCR_ISO) {
231 mii->mii_media_active |= IFM_NONE;
232 mii->mii_media_status = 0;
236 if (bmcr & BMCR_LOOP)
237 mii->mii_media_active |= IFM_LOOP;
239 if (bmcr & BMCR_AUTOEN) {
241 * The media status bits are only valid if autonegotiation
242 * has completed (or it's disabled).
244 if ((bmsr & BMSR_ACOMP) == 0) {
245 /* Erg, still trying, I guess... */
246 mii->mii_media_active |= IFM_NONE;
250 switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) {
252 mii->mii_media_active |= IFM_1000_T;
253 gtsr = PHY_READ(sc, MII_100T2SR);
254 if (gtsr & GTSR_MS_RES)
255 mii->mii_media_active |= IFM_ETH_MASTER;
259 mii->mii_media_active |= IFM_100_TX;
263 mii->mii_media_active |= IFM_10_T;
267 mii->mii_media_active |= IFM_NONE;
268 mii->mii_media_status = 0;
272 if (physup & PHY_SUP_DUPLEX)
273 mii->mii_media_active |= IFM_FDX;
275 mii->mii_media_active |= IFM_HDX;
277 mii->mii_media_active = ife->ifm_media;