2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * Pseudo-driver for media selection on the Lite-On PNIC 82c168
38 * chip. The NWAY support on this chip is horribly broken, so we
39 * only support manual mode selection. This is lame, but getting
40 * NWAY to work right is amazingly difficult.
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
46 #include <sys/socket.h>
47 #include <sys/errno.h>
49 #include <sys/module.h>
50 #include <sys/mutex.h>
54 #include <net/if_arp.h>
55 #include <net/if_media.h>
57 #include <dev/mii/mii.h>
58 #include <dev/mii/miivar.h>
61 #include <machine/bus.h>
62 #include <machine/resource.h>
65 #include <dev/dc/if_dcreg.h>
67 #include "miibus_if.h"
69 #define DC_SETBIT(sc, reg, x) \
70 CSR_WRITE_4(sc, reg, \
71 CSR_READ_4(sc, reg) | x)
73 #define DC_CLRBIT(sc, reg, x) \
74 CSR_WRITE_4(sc, reg, \
75 CSR_READ_4(sc, reg) & ~x)
77 static int pnphy_probe(device_t);
78 static int pnphy_attach(device_t);
80 static device_method_t pnphy_methods[] = {
81 /* device interface */
82 DEVMETHOD(device_probe, pnphy_probe),
83 DEVMETHOD(device_attach, pnphy_attach),
84 DEVMETHOD(device_detach, mii_phy_detach),
85 DEVMETHOD(device_shutdown, bus_generic_shutdown),
89 static devclass_t pnphy_devclass;
91 static driver_t pnphy_driver = {
94 sizeof(struct mii_softc)
97 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
99 static int pnphy_service(struct mii_softc *, struct mii_data *, int);
100 static void pnphy_status(struct mii_softc *);
103 pnphy_probe(device_t dev)
105 struct mii_attach_args *ma;
107 ma = device_get_ivars(dev);
110 * The dc driver will report the 82c168 vendor and device
111 * ID to let us know that it wants us to attach.
113 if (ma->mii_id1 != DC_VENDORID_LO ||
114 ma->mii_id2 != DC_DEVICEID_82C168)
117 device_set_desc(dev, "PNIC 82c168 media interface");
119 return (BUS_PROBE_DEFAULT);
123 pnphy_attach(device_t dev)
125 struct mii_softc *sc;
126 struct mii_attach_args *ma;
127 struct mii_data *mii;
129 sc = device_get_softc(dev);
130 ma = device_get_ivars(dev);
131 sc->mii_dev = device_get_parent(dev);
132 mii = device_get_softc(sc->mii_dev);
133 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
135 sc->mii_inst = mii->mii_instance;
136 sc->mii_phy = ma->mii_phyno;
137 sc->mii_service = pnphy_service;
141 * Apparently, we can neither isolate nor do loopback.
143 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
147 sc->mii_capabilities =
148 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX;
149 sc->mii_capabilities &= ma->mii_capmask;
150 device_printf(dev, " ");
151 mii_phy_add_media(sc);
154 MIIBUS_MEDIAINIT(sc->mii_dev);
159 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
161 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)
181 * If the interface is not up, don't do anything.
183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
188 switch (IFM_SUBTYPE(ife->ifm_media)) {
190 /* NWAY is busted on this chip */
193 * XXX Not supported as a manual setting right now.
197 mii->mii_media_active = IFM_ETHER | IFM_100_TX;
198 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
199 mii->mii_media_active |= IFM_FDX;
200 MIIBUS_STATCHG(sc->mii_dev);
203 mii->mii_media_active = IFM_ETHER | IFM_10_T;
204 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
205 mii->mii_media_active |= IFM_FDX;
206 MIIBUS_STATCHG(sc->mii_dev);
215 * If we're not currently selected, just return.
217 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
221 * Is the interface even up?
223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
229 /* Update the media status. */
232 /* Callback if something changed. */
233 mii_phy_update(sc, cmd);
238 pnphy_status(struct mii_softc *sc)
240 struct mii_data *mii = sc->mii_pdata;
242 struct dc_softc *dc_sc;
244 dc_sc = mii->mii_ifp->if_softc;
246 mii->mii_media_status = IFM_AVALID;
247 mii->mii_media_active = IFM_ETHER;
249 reg = CSR_READ_4(dc_sc, DC_ISR);
251 if (!(reg & DC_ISR_LINKFAIL))
252 mii->mii_media_status |= IFM_ACTIVE;
254 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
255 mii->mii_media_active |= IFM_10_T;
257 mii->mii_media_active |= IFM_100_TX;
258 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
259 mii->mii_media_active |= IFM_FDX;