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 $
33 * $DragonFly: src/sys/dev/netif/mii_layer/pnphy.c,v 1.6 2005/02/21 18:40:36 joerg Exp $
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>
48 #include <sys/module.h>
52 #include <net/if_arp.h>
53 #include <net/if_media.h>
59 #include <machine/clock.h>
60 #include <machine/bus_pio.h>
61 #include <machine/bus_memio.h>
62 #include <machine/bus.h>
63 #include <machine/resource.h>
66 #include "../dc/if_dcreg.h"
68 #include "miibus_if.h"
70 #define DC_SETBIT(sc, reg, x) \
71 CSR_WRITE_4(sc, reg, \
72 CSR_READ_4(sc, reg) | x)
74 #define DC_CLRBIT(sc, reg, x) \
75 CSR_WRITE_4(sc, reg, \
76 CSR_READ_4(sc, reg) & ~x)
78 static int pnphy_probe (device_t);
79 static int pnphy_attach (device_t);
80 static int pnphy_detach (device_t);
82 static device_method_t pnphy_methods[] = {
83 /* device interface */
84 DEVMETHOD(device_probe, pnphy_probe),
85 DEVMETHOD(device_attach, pnphy_attach),
86 DEVMETHOD(device_detach, pnphy_detach),
87 DEVMETHOD(device_shutdown, bus_generic_shutdown),
91 static devclass_t pnphy_devclass;
93 static driver_t pnphy_driver = {
96 sizeof(struct mii_softc)
99 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
101 int pnphy_service (struct mii_softc *, struct mii_data *, int);
102 void pnphy_status (struct mii_softc *);
104 static int pnphy_probe(dev)
107 struct mii_attach_args *ma;
109 ma = device_get_ivars(dev);
112 * The dc driver will report the 82c168 vendor and device
113 * ID to let us know that it wants us to attach.
115 if (ma->mii_id1 != DC_VENDORID_LO ||
116 ma->mii_id2 != DC_DEVICEID_82C168)
119 device_set_desc(dev, "PNIC 82c168 media interface");
124 static int pnphy_attach(dev)
127 struct mii_softc *sc;
128 struct mii_attach_args *ma;
129 struct mii_data *mii;
131 sc = device_get_softc(dev);
132 ma = device_get_ivars(dev);
134 sc->mii_dev = device_get_parent(dev);
135 mii = device_get_softc(sc->mii_dev);
136 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
138 sc->mii_inst = mii->mii_instance;
139 sc->mii_phy = ma->mii_phyno;
140 sc->mii_service = pnphy_service;
143 sc->mii_flags |= MIIF_NOISOLATE;
146 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
148 sc->mii_capabilities =
149 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
150 sc->mii_capabilities &= ma->mii_capmask;
151 device_printf(dev, " ");
152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
153 printf("no media present");
155 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst);
157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
161 BMCR_LOOP|BMCR_S100);
165 MIIBUS_MEDIAINIT(sc->mii_dev);
169 static int pnphy_detach(dev)
172 struct mii_softc *sc;
173 struct mii_data *mii;
175 sc = device_get_softc(dev);
176 mii = device_get_softc(device_get_parent(dev));
178 LIST_REMOVE(sc, mii_list);
184 pnphy_service(sc, mii, cmd)
185 struct mii_softc *sc;
186 struct mii_data *mii;
189 struct dc_softc *dc_sc;
190 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
192 dc_sc = mii->mii_ifp->if_softc;
197 * If we're not polling our PHY instance, just return.
199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
206 * If the media indicates a different PHY instance,
209 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
213 * If the interface is not up, don't do anything.
215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
220 switch (IFM_SUBTYPE(ife->ifm_media)) {
222 /* NWAY is busted on this chip */
225 * XXX Not supported as a manual setting right now.
229 mii->mii_media_active = IFM_ETHER|IFM_100_TX;
230 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
231 mii->mii_media_active |= IFM_FDX;
232 MIIBUS_STATCHG(sc->mii_dev);
236 mii->mii_media_active = IFM_ETHER|IFM_10_T;
237 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
238 mii->mii_media_active |= IFM_FDX;
239 MIIBUS_STATCHG(sc->mii_dev);
250 * If we're not currently selected, just return.
252 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
256 * Only used for autonegotiation.
258 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
262 * Is the interface even up?
264 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
270 /* Update the media status. */
273 /* Callback if something changed. */
274 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
275 MIIBUS_STATCHG(sc->mii_dev);
276 sc->mii_active = mii->mii_media_active;
283 struct mii_softc *sc;
285 struct mii_data *mii = sc->mii_pdata;
287 struct dc_softc *dc_sc;
289 dc_sc = mii->mii_ifp->if_softc;
291 mii->mii_media_status = IFM_AVALID;
292 mii->mii_media_active = IFM_ETHER;
294 reg = CSR_READ_4(dc_sc, DC_ISR);
296 if (!(reg & DC_ISR_LINKFAIL))
297 mii->mii_media_status |= IFM_ACTIVE;
299 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
300 mii->mii_media_active |= IFM_10_T;
302 mii->mii_media_active |= IFM_100_TX;
303 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
304 mii->mii_media_active |= IFM_FDX;