1 /*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
19 *
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.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD: stable/9/sys/dev/dc/pnphy.c 229093 2011-12-31 14:12:12Z hselasky $");
35
36 /*
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.
41 */
42
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/lock.h>
49 #include <sys/module.h>
50 #include <sys/mutex.h>
51 #include <sys/bus.h>
52
53 #include <net/if.h>
54 #include <net/if_arp.h>
55 #include <net/if_media.h>
56
57 #include <dev/mii/mii.h>
58 #include <dev/mii/miivar.h>
59 #include "miidevs.h"
60
61 #include <machine/bus.h>
62 #include <machine/resource.h>
63
64 #include <dev/dc/if_dcreg.h>
65
66 #include "miibus_if.h"
67
68 static int pnphy_probe(device_t);
69 static int pnphy_attach(device_t);
70
71 static device_method_t pnphy_methods[] = {
72 /* device interface */
73 DEVMETHOD(device_probe, pnphy_probe),
74 DEVMETHOD(device_attach, pnphy_attach),
75 DEVMETHOD(device_detach, mii_phy_detach),
76 DEVMETHOD(device_shutdown, bus_generic_shutdown),
77 DEVMETHOD_END
78 };
79
80 static devclass_t pnphy_devclass;
81
82 static driver_t pnphy_driver = {
83 "pnphy",
84 pnphy_methods,
85 sizeof(struct mii_softc)
86 };
87
88 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
89
90 static int pnphy_service(struct mii_softc *, struct mii_data *, int);
91 static void pnphy_status(struct mii_softc *);
92 static void pnphy_reset(struct mii_softc *);
93
94 static const struct mii_phy_funcs pnphy_funcs = {
95 pnphy_service,
96 pnphy_status,
97 pnphy_reset
98 };
99
100 static int
pnphy_probe(device_t dev)101 pnphy_probe(device_t dev)
102 {
103 struct mii_attach_args *ma;
104
105 ma = device_get_ivars(dev);
106
107 /*
108 * The dc driver will report the 82c168 vendor and device
109 * ID to let us know that it wants us to attach.
110 */
111 if (ma->mii_id1 != DC_VENDORID_LO ||
112 ma->mii_id2 != DC_DEVICEID_82C168)
113 return (ENXIO);
114
115 device_set_desc(dev, "PNIC 82c168 media interface");
116
117 return (BUS_PROBE_DEFAULT);
118 }
119
120 static int
pnphy_attach(device_t dev)121 pnphy_attach(device_t dev)
122 {
123 struct mii_softc *sc;
124
125 sc = device_get_softc(dev);
126
127 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
128 &pnphy_funcs, 0);
129
130 sc->mii_capabilities =
131 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX;
132 sc->mii_capabilities &= sc->mii_capmask;
133 device_printf(dev, " ");
134 mii_phy_add_media(sc);
135 printf("\n");
136
137 MIIBUS_MEDIAINIT(sc->mii_dev);
138 return (0);
139 }
140
141 static int
pnphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)142 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
143 {
144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
145
146 switch (cmd) {
147 case MII_POLLSTAT:
148 break;
149
150 case MII_MEDIACHG:
151 /*
152 * If the interface is not up, don't do anything.
153 */
154 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
155 break;
156
157 /*
158 * Note that auto-negotiation is broken on this chip.
159 */
160 switch (IFM_SUBTYPE(ife->ifm_media)) {
161 case IFM_100_TX:
162 mii->mii_media_active = IFM_ETHER | IFM_100_TX;
163 if ((ife->ifm_media & IFM_FDX) != 0)
164 mii->mii_media_active |= IFM_FDX;
165 MIIBUS_STATCHG(sc->mii_dev);
166 return (0);
167 case IFM_10_T:
168 mii->mii_media_active = IFM_ETHER | IFM_10_T;
169 if ((ife->ifm_media & IFM_FDX) != 0)
170 mii->mii_media_active |= IFM_FDX;
171 MIIBUS_STATCHG(sc->mii_dev);
172 return (0);
173 default:
174 return (EINVAL);
175 }
176 break;
177
178 case MII_TICK:
179 /*
180 * Is the interface even up?
181 */
182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
183 return (0);
184
185 break;
186 }
187
188 /* Update the media status. */
189 PHY_STATUS(sc);
190
191 /* Callback if something changed. */
192 mii_phy_update(sc, cmd);
193 return (0);
194 }
195
196 static void
pnphy_status(struct mii_softc * sc)197 pnphy_status(struct mii_softc *sc)
198 {
199 struct mii_data *mii = sc->mii_pdata;
200 int reg;
201 struct dc_softc *dc_sc;
202
203 dc_sc = mii->mii_ifp->if_softc;
204
205 mii->mii_media_status = IFM_AVALID;
206 mii->mii_media_active = IFM_ETHER;
207
208 reg = CSR_READ_4(dc_sc, DC_ISR);
209 if (!(reg & DC_ISR_LINKFAIL))
210 mii->mii_media_status |= IFM_ACTIVE;
211 reg = CSR_READ_4(dc_sc, DC_NETCFG);
212 if (reg & DC_NETCFG_SPEEDSEL)
213 mii->mii_media_active |= IFM_10_T;
214 else
215 mii->mii_media_active |= IFM_100_TX;
216 if (reg & DC_NETCFG_FULLDUPLEX)
217 mii->mii_media_active |= IFM_FDX;
218 else
219 mii->mii_media_active |= IFM_HDX;
220 }
221
222 static void
pnphy_reset(struct mii_softc * sc __unused)223 pnphy_reset(struct mii_softc *sc __unused)
224 {
225
226 }
227