2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1997, 1998, 1999
5 * Bill Paul <wpaul@ee.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 * Pseudo-driver for media selection on the Lite-On PNIC 82c168
40 * chip. The NWAY support on this chip is horribly broken, so we
41 * only support manual mode selection. This is lame, but getting
42 * NWAY to work right is amazingly difficult.
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/socket.h>
49 #include <sys/errno.h>
51 #include <sys/module.h>
52 #include <sys/mutex.h>
56 #include <net/if_var.h>
57 #include <net/if_arp.h>
58 #include <net/if_media.h>
60 #include <dev/mii/mii.h>
61 #include <dev/mii/miivar.h>
64 #include <machine/bus.h>
65 #include <machine/resource.h>
67 #include <dev/dc/if_dcreg.h>
69 #include "miibus_if.h"
71 static int pnphy_probe(device_t);
72 static int pnphy_attach(device_t);
74 static device_method_t pnphy_methods[] = {
75 /* device interface */
76 DEVMETHOD(device_probe, pnphy_probe),
77 DEVMETHOD(device_attach, pnphy_attach),
78 DEVMETHOD(device_detach, mii_phy_detach),
79 DEVMETHOD(device_shutdown, bus_generic_shutdown),
83 static devclass_t pnphy_devclass;
85 static driver_t pnphy_driver = {
88 sizeof(struct mii_softc)
91 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
93 static int pnphy_service(struct mii_softc *, struct mii_data *, int);
94 static void pnphy_status(struct mii_softc *);
95 static void pnphy_reset(struct mii_softc *);
97 static const struct mii_phy_funcs pnphy_funcs = {
104 pnphy_probe(device_t dev)
106 struct mii_attach_args *ma;
108 ma = device_get_ivars(dev);
111 * The dc driver will report the 82c168 vendor and device
112 * ID to let us know that it wants us to attach.
114 if (ma->mii_id1 != DC_VENDORID_LO ||
115 ma->mii_id2 != DC_DEVICEID_82C168)
118 device_set_desc(dev, "PNIC 82c168 media interface");
120 return (BUS_PROBE_DEFAULT);
124 pnphy_attach(device_t dev)
126 struct mii_softc *sc;
128 sc = device_get_softc(dev);
130 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
133 sc->mii_capabilities =
134 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX;
135 sc->mii_capabilities &= sc->mii_capmask;
136 device_printf(dev, " ");
137 mii_phy_add_media(sc);
140 MIIBUS_MEDIAINIT(sc->mii_dev);
145 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
155 * If the interface is not up, don't do anything.
157 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
161 * Note that auto-negotiation is broken on this chip.
163 switch (IFM_SUBTYPE(ife->ifm_media)) {
165 mii->mii_media_active = IFM_ETHER | IFM_100_TX;
166 if ((ife->ifm_media & IFM_FDX) != 0)
167 mii->mii_media_active |= IFM_FDX;
168 MIIBUS_STATCHG(sc->mii_dev);
171 mii->mii_media_active = IFM_ETHER | IFM_10_T;
172 if ((ife->ifm_media & IFM_FDX) != 0)
173 mii->mii_media_active |= IFM_FDX;
174 MIIBUS_STATCHG(sc->mii_dev);
183 * Is the interface even up?
185 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
191 /* Update the media status. */
194 /* Callback if something changed. */
195 mii_phy_update(sc, cmd);
200 pnphy_status(struct mii_softc *sc)
202 struct mii_data *mii = sc->mii_pdata;
204 struct dc_softc *dc_sc;
206 dc_sc = if_getsoftc(mii->mii_ifp);
208 mii->mii_media_status = IFM_AVALID;
209 mii->mii_media_active = IFM_ETHER;
211 reg = CSR_READ_4(dc_sc, DC_ISR);
212 if (!(reg & DC_ISR_LINKFAIL))
213 mii->mii_media_status |= IFM_ACTIVE;
214 reg = CSR_READ_4(dc_sc, DC_NETCFG);
215 if (reg & DC_NETCFG_SPEEDSEL)
216 mii->mii_media_active |= IFM_10_T;
218 mii->mii_media_active |= IFM_100_TX;
219 if (reg & DC_NETCFG_FULLDUPLEX)
220 mii->mii_media_active |= IFM_FDX;
222 mii->mii_media_active |= IFM_HDX;
226 pnphy_reset(struct mii_softc *sc __unused)