1 /*
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1997, 1998, 1999
5 * Bill Paul <[email protected]>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
21 *
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.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 /*
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.
43 */
44
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>
50 #include <sys/lock.h>
51 #include <sys/module.h>
52 #include <sys/mutex.h>
53 #include <sys/bus.h>
54
55 #include <net/if.h>
56 #include <net/if_var.h>
57 #include <net/if_arp.h>
58 #include <net/if_media.h>
59
60 #include <dev/mii/mii.h>
61 #include <dev/mii/miivar.h>
62 #include "miidevs.h"
63
64 #include <machine/bus.h>
65 #include <machine/resource.h>
66
67 #include <dev/dc/if_dcreg.h>
68
69 #include "miibus_if.h"
70
71 static int pnphy_probe(device_t);
72 static int pnphy_attach(device_t);
73
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),
80 DEVMETHOD_END
81 };
82
83 static devclass_t pnphy_devclass;
84
85 static driver_t pnphy_driver = {
86 "pnphy",
87 pnphy_methods,
88 sizeof(struct mii_softc)
89 };
90
91 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
92
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 *);
96
97 static const struct mii_phy_funcs pnphy_funcs = {
98 pnphy_service,
99 pnphy_status,
100 pnphy_reset
101 };
102
103 static int
pnphy_probe(device_t dev)104 pnphy_probe(device_t dev)
105 {
106 struct mii_attach_args *ma;
107
108 ma = device_get_ivars(dev);
109
110 /*
111 * The dc driver will report the 82c168 vendor and device
112 * ID to let us know that it wants us to attach.
113 */
114 if (ma->mii_id1 != DC_VENDORID_LO ||
115 ma->mii_id2 != DC_DEVICEID_82C168)
116 return (ENXIO);
117
118 device_set_desc(dev, "PNIC 82c168 media interface");
119
120 return (BUS_PROBE_DEFAULT);
121 }
122
123 static int
pnphy_attach(device_t dev)124 pnphy_attach(device_t dev)
125 {
126 struct mii_softc *sc;
127
128 sc = device_get_softc(dev);
129
130 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
131 &pnphy_funcs, 0);
132
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);
138 printf("\n");
139
140 MIIBUS_MEDIAINIT(sc->mii_dev);
141 return (0);
142 }
143
144 static int
pnphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)145 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
146 {
147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
148
149 switch (cmd) {
150 case MII_POLLSTAT:
151 break;
152
153 case MII_MEDIACHG:
154 /*
155 * If the interface is not up, don't do anything.
156 */
157 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
158 break;
159
160 /*
161 * Note that auto-negotiation is broken on this chip.
162 */
163 switch (IFM_SUBTYPE(ife->ifm_media)) {
164 case IFM_100_TX:
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);
169 return (0);
170 case IFM_10_T:
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);
175 return (0);
176 default:
177 return (EINVAL);
178 }
179 break;
180
181 case MII_TICK:
182 /*
183 * Is the interface even up?
184 */
185 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
186 return (0);
187
188 break;
189 }
190
191 /* Update the media status. */
192 PHY_STATUS(sc);
193
194 /* Callback if something changed. */
195 mii_phy_update(sc, cmd);
196 return (0);
197 }
198
199 static void
pnphy_status(struct mii_softc * sc)200 pnphy_status(struct mii_softc *sc)
201 {
202 struct mii_data *mii = sc->mii_pdata;
203 int reg;
204 struct dc_softc *dc_sc;
205
206 dc_sc = if_getsoftc(mii->mii_ifp);
207
208 mii->mii_media_status = IFM_AVALID;
209 mii->mii_media_active = IFM_ETHER;
210
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;
217 else
218 mii->mii_media_active |= IFM_100_TX;
219 if (reg & DC_NETCFG_FULLDUPLEX)
220 mii->mii_media_active |= IFM_FDX;
221 else
222 mii->mii_media_active |= IFM_HDX;
223 }
224
225 static void
pnphy_reset(struct mii_softc * sc __unused)226 pnphy_reset(struct mii_softc *sc __unused)
227 {
228
229 }
230