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.
32 * $FreeBSD: src/sys/dev/mii/pnphy.c,v 1.1.2.1 2002/11/08 21:53:49 semenu Exp $
36 * Pseudo-driver for media selection on the Lite-On PNIC 82c168
37 * chip. The NWAY support on this chip is horribly broken, so we
38 * only support manual mode selection. This is lame, but getting
39 * NWAY to work right is amazingly difficult.
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/errno.h>
47 #include <sys/module.h>
51 #include <net/if_arp.h>
52 #include <net/if_media.h>
58 #include <machine/clock.h>
60 #include "../dc/if_dcreg.h"
62 #include "miibus_if.h"
64 #define DC_SETBIT(sc, reg, x) \
65 CSR_WRITE_4(sc, reg, \
66 CSR_READ_4(sc, reg) | x)
68 #define DC_CLRBIT(sc, reg, x) \
69 CSR_WRITE_4(sc, reg, \
70 CSR_READ_4(sc, reg) & ~x)
72 static int pnphy_probe (device_t);
73 static int pnphy_attach (device_t);
75 static device_method_t pnphy_methods[] = {
76 /* device interface */
77 DEVMETHOD(device_probe, pnphy_probe),
78 DEVMETHOD(device_attach, pnphy_attach),
79 DEVMETHOD(device_detach, ukphy_detach),
80 DEVMETHOD(device_shutdown, bus_generic_shutdown),
84 static devclass_t pnphy_devclass;
86 static driver_t pnphy_driver = {
89 sizeof(struct mii_softc)
92 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, NULL, NULL);
94 static int pnphy_service(struct mii_softc *, struct mii_data *, int);
95 static void pnphy_status(struct mii_softc *);
98 pnphy_probe(device_t dev)
100 struct mii_attach_args *ma;
102 ma = device_get_ivars(dev);
105 * The dc driver will report the 82c168 vendor and device
106 * ID to let us know that it wants us to attach.
108 if (ma->mii_id1 != DC_VENDORID_LO ||
109 ma->mii_id2 != DC_DEVICEID_82C168)
112 device_set_desc(dev, "PNIC 82c168 media interface");
118 pnphy_attach(device_t dev)
120 struct mii_softc *sc;
121 struct mii_attach_args *ma;
122 struct mii_data *mii;
124 sc = device_get_softc(dev);
125 ma = device_get_ivars(dev);
126 mii_softc_init(sc, ma);
127 sc->mii_dev = device_get_parent(dev);
128 mii = device_get_softc(sc->mii_dev);
129 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
131 sc->mii_inst = mii->mii_instance;
132 sc->mii_service = pnphy_service;
135 sc->mii_flags |= MIIF_NOISOLATE;
138 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
140 sc->mii_capabilities =
141 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
142 sc->mii_capabilities &= ma->mii_capmask;
143 device_printf(dev, " ");
144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
145 kprintf("no media present");
147 mii_phy_add_media(sc);
150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
158 MIIBUS_MEDIAINIT(sc->mii_dev);
163 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
165 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
170 * If we're not polling our PHY instance, just return.
172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
179 * If the media indicates a different PHY instance,
182 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
186 * If the interface is not up, don't do anything.
188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
193 switch (IFM_SUBTYPE(ife->ifm_media)) {
195 /* NWAY is busted on this chip */
198 * XXX Not supported as a manual setting right now.
202 mii->mii_media_active = IFM_ETHER|IFM_100_TX;
203 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
204 mii->mii_media_active |= IFM_FDX;
205 MIIBUS_STATCHG(sc->mii_dev);
209 mii->mii_media_active = IFM_ETHER|IFM_10_T;
210 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
211 mii->mii_media_active |= IFM_FDX;
212 MIIBUS_STATCHG(sc->mii_dev);
223 * If we're not currently selected, just return.
225 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
229 * Is the interface even up?
231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
235 * Only used for autonegotiation.
237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
241 * This PHY's autonegotiation doesn't need to be kicked.
246 /* Update the media status. */
249 /* Callback if something changed. */
250 mii_phy_update(sc, cmd);
255 pnphy_status(struct mii_softc *sc)
257 struct mii_data *mii = sc->mii_pdata;
258 struct dc_softc *dc_sc = mii->mii_ifp->if_softc;
261 mii->mii_media_status = IFM_AVALID;
262 mii->mii_media_active = IFM_ETHER;
264 reg = CSR_READ_4(dc_sc, DC_ISR);
266 if (!(reg & DC_ISR_LINKFAIL))
267 mii->mii_media_status |= IFM_ACTIVE;
269 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
270 mii->mii_media_active |= IFM_10_T;
272 mii->mii_media_active |= IFM_100_TX;
273 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
274 mii->mii_media_active |= IFM_FDX;