FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/lxtphy.c
1 /* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp */
2 /* NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp */
3
4 /*-
5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*-
35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 #include <sys/cdefs.h>
59 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/lxtphy.c 214909 2010-11-07 11:12:29Z marius $");
60
61 /*
62 * driver for Level One's LXT-970 ethernet 10/100 PHY
63 * datasheet from www.level1.com
64 */
65
66 #include <sys/param.h>
67 #include <sys/systm.h>
68 #include <sys/kernel.h>
69 #include <sys/socket.h>
70 #include <sys/errno.h>
71 #include <sys/module.h>
72 #include <sys/bus.h>
73
74 #include <net/if.h>
75 #include <net/if_media.h>
76
77 #include <dev/mii/mii.h>
78 #include <dev/mii/miivar.h>
79 #include "miidevs.h"
80
81 #include <dev/mii/lxtphyreg.h>
82
83 #include "miibus_if.h"
84
85 static int lxtphy_probe(device_t);
86 static int lxtphy_attach(device_t);
87
88 static device_method_t lxtphy_methods[] = {
89 /* device interface */
90 DEVMETHOD(device_probe, lxtphy_probe),
91 DEVMETHOD(device_attach, lxtphy_attach),
92 DEVMETHOD(device_detach, mii_phy_detach),
93 DEVMETHOD(device_shutdown, bus_generic_shutdown),
94 { 0, 0 }
95 };
96
97 static devclass_t lxtphy_devclass;
98
99 static driver_t lxtphy_driver = {
100 "lxtphy",
101 lxtphy_methods,
102 sizeof(struct mii_softc)
103 };
104
105 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0);
106
107 static int lxtphy_service(struct mii_softc *, struct mii_data *, int);
108 static void lxtphy_status(struct mii_softc *);
109 static void lxtphy_set_tp(struct mii_softc *);
110 static void lxtphy_set_fx(struct mii_softc *);
111
112 static const struct mii_phydesc lxtphys[] = {
113 MII_PHY_DESC(xxLEVEL1, LXT970),
114 MII_PHY_END
115 };
116
117 static int
118 lxtphy_probe(device_t dev)
119 {
120
121 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT));
122 }
123
124 static int
125 lxtphy_attach(device_t dev)
126 {
127 struct mii_softc *sc;
128 struct mii_attach_args *ma;
129 struct mii_data *mii;
130
131 sc = device_get_softc(dev);
132 ma = device_get_ivars(dev);
133 sc->mii_dev = device_get_parent(dev);
134 mii = ma->mii_data;
135 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
136
137 sc->mii_flags = miibus_get_flags(dev);
138 sc->mii_inst = mii->mii_instance++;
139 sc->mii_phy = ma->mii_phyno;
140 sc->mii_service = lxtphy_service;
141 sc->mii_pdata = mii;
142
143 mii_phy_reset(sc);
144
145 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
146 device_printf(dev, " ");
147
148 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
150 MII_MEDIA_100_TX);
151 printf("100baseFX, ");
152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
153 MII_MEDIA_100_TX_FDX);
154 printf("100baseFX-FDX, ");
155 #undef ADD
156
157 mii_phy_add_media(sc);
158 printf("\n");
159
160 MIIBUS_MEDIAINIT(sc->mii_dev);
161 return (0);
162 }
163
164 static int
165 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
166 {
167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
168
169 switch (cmd) {
170 case MII_POLLSTAT:
171 break;
172
173 case MII_MEDIACHG:
174 /*
175 * If the interface is not up, don't do anything.
176 */
177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
178 break;
179
180 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
181 lxtphy_set_fx(sc);
182 else
183 lxtphy_set_tp(sc);
184
185 mii_phy_setmedia(sc);
186 break;
187
188 case MII_TICK:
189 if (mii_phy_tick(sc) == EJUSTRETURN)
190 return (0);
191 break;
192 }
193
194 /* Update the media status. */
195 lxtphy_status(sc);
196
197 /* Callback if something changed. */
198 mii_phy_update(sc, cmd);
199 return (0);
200 }
201
202 static void
203 lxtphy_status(struct mii_softc *sc)
204 {
205 struct mii_data *mii = sc->mii_pdata;
206 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
207 int bmcr, bmsr, csr;
208
209 mii->mii_media_status = IFM_AVALID;
210 mii->mii_media_active = IFM_ETHER;
211
212 /*
213 * Get link status from the CSR; we need to read the CSR
214 * for media type anyhow, and the link status in the CSR
215 * doens't latch, so fewer register reads are required.
216 */
217 csr = PHY_READ(sc, MII_LXTPHY_CSR);
218 if (csr & CSR_LINK)
219 mii->mii_media_status |= IFM_ACTIVE;
220
221 bmcr = PHY_READ(sc, MII_BMCR);
222 if (bmcr & BMCR_ISO) {
223 mii->mii_media_active |= IFM_NONE;
224 mii->mii_media_status = 0;
225 return;
226 }
227
228 if (bmcr & BMCR_LOOP)
229 mii->mii_media_active |= IFM_LOOP;
230
231 if (bmcr & BMCR_AUTOEN) {
232 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
233 if ((bmsr & BMSR_ACOMP) == 0) {
234 /* Erg, still trying, I guess... */
235 mii->mii_media_active |= IFM_NONE;
236 return;
237 }
238 if (csr & CSR_SPEED)
239 mii->mii_media_active |= IFM_100_TX;
240 else
241 mii->mii_media_active |= IFM_10_T;
242 if (csr & CSR_DUPLEX)
243 mii->mii_media_active |= IFM_FDX;
244 else
245 mii->mii_media_active |= IFM_HDX;
246 } else
247 mii->mii_media_active = ife->ifm_media;
248 }
249
250 static void
251 lxtphy_set_tp(struct mii_softc *sc)
252 {
253 int cfg;
254
255 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
256 cfg &= ~CONFIG_100BASEFX;
257 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
258 }
259
260 static void
261 lxtphy_set_fx(struct mii_softc *sc)
262 {
263 int cfg;
264
265 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
266 cfg |= CONFIG_100BASEFX;
267 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
268 }
Cache object: bfda636403603c330489e18f71ed88db
|