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 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 *
7 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
12 * NASA Ames Research Center.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 /*-
37 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 */
59
60 #include <sys/cdefs.h>
61 __FBSDID("$FreeBSD$");
62
63 /*
64 * driver for Level One's LXT-970 ethernet 10/100 PHY
65 * datasheet from www.level1.com
66 */
67
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/kernel.h>
71 #include <sys/socket.h>
72 #include <sys/errno.h>
73 #include <sys/module.h>
74 #include <sys/bus.h>
75
76 #include <net/if.h>
77 #include <net/if_media.h>
78
79 #include <dev/mii/mii.h>
80 #include <dev/mii/miivar.h>
81 #include "miidevs.h"
82
83 #include <dev/mii/lxtphyreg.h>
84
85 #include "miibus_if.h"
86
87 static int lxtphy_probe(device_t);
88 static int lxtphy_attach(device_t);
89
90 static device_method_t lxtphy_methods[] = {
91 /* device interface */
92 DEVMETHOD(device_probe, lxtphy_probe),
93 DEVMETHOD(device_attach, lxtphy_attach),
94 DEVMETHOD(device_detach, mii_phy_detach),
95 DEVMETHOD(device_shutdown, bus_generic_shutdown),
96 DEVMETHOD_END
97 };
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, 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_reset(struct mii_softc *);
110 static void lxtphy_set_tp(struct mii_softc *);
111 static void lxtphy_set_fx(struct mii_softc *);
112
113 static const struct mii_phydesc lxtphys[] = {
114 MII_PHY_DESC(xxLEVEL1, LXT970),
115 MII_PHY_END
116 };
117
118 static const struct mii_phy_funcs lxtphy_funcs = {
119 lxtphy_service,
120 lxtphy_status,
121 lxtphy_reset
122 };
123
124 static int
125 lxtphy_probe(device_t dev)
126 {
127
128 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT));
129 }
130
131 static int
132 lxtphy_attach(device_t dev)
133 {
134 struct mii_softc *sc;
135
136 sc = device_get_softc(dev);
137
138 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &lxtphy_funcs, 0);
139
140 PHY_RESET(sc);
141
142 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
143 device_printf(dev, " ");
144
145 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL)
146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst));
147 printf("100baseFX, ");
148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst));
149 printf("100baseFX-FDX, ");
150 #undef ADD
151
152 mii_phy_add_media(sc);
153 printf("\n");
154
155 MIIBUS_MEDIAINIT(sc->mii_dev);
156 return (0);
157 }
158
159 static int
160 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
161 {
162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
163
164 switch (cmd) {
165 case MII_POLLSTAT:
166 break;
167
168 case MII_MEDIACHG:
169 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
170 lxtphy_set_fx(sc);
171 else
172 lxtphy_set_tp(sc);
173
174 mii_phy_setmedia(sc);
175 break;
176
177 case MII_TICK:
178 if (mii_phy_tick(sc) == EJUSTRETURN)
179 return (0);
180 break;
181 }
182
183 /* Update the media status. */
184 PHY_STATUS(sc);
185
186 /* Callback if something changed. */
187 mii_phy_update(sc, cmd);
188 return (0);
189 }
190
191 static void
192 lxtphy_status(struct mii_softc *sc)
193 {
194 struct mii_data *mii = sc->mii_pdata;
195 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
196 int bmcr, bmsr, csr;
197
198 mii->mii_media_status = IFM_AVALID;
199 mii->mii_media_active = IFM_ETHER;
200
201 /*
202 * Get link status from the CSR; we need to read the CSR
203 * for media type anyhow, and the link status in the CSR
204 * doesn't latch, so fewer register reads are required.
205 */
206 csr = PHY_READ(sc, MII_LXTPHY_CSR);
207 if (csr & CSR_LINK)
208 mii->mii_media_status |= IFM_ACTIVE;
209
210 bmcr = PHY_READ(sc, MII_BMCR);
211 if (bmcr & BMCR_ISO) {
212 mii->mii_media_active |= IFM_NONE;
213 mii->mii_media_status = 0;
214 return;
215 }
216
217 if (bmcr & BMCR_LOOP)
218 mii->mii_media_active |= IFM_LOOP;
219
220 if (bmcr & BMCR_AUTOEN) {
221 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
222 if ((bmsr & BMSR_ACOMP) == 0) {
223 /* Erg, still trying, I guess... */
224 mii->mii_media_active |= IFM_NONE;
225 return;
226 }
227 if (csr & CSR_SPEED)
228 mii->mii_media_active |= IFM_100_TX;
229 else
230 mii->mii_media_active |= IFM_10_T;
231 if (csr & CSR_DUPLEX)
232 mii->mii_media_active |=
233 IFM_FDX | mii_phy_flowstatus(sc);
234 else
235 mii->mii_media_active |= IFM_HDX;
236 } else
237 mii->mii_media_active = ife->ifm_media;
238 }
239
240 static void
241 lxtphy_reset(struct mii_softc *sc)
242 {
243
244 mii_phy_reset(sc);
245 PHY_WRITE(sc, MII_LXTPHY_IER,
246 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
247 }
248
249 static void
250 lxtphy_set_tp(struct mii_softc *sc)
251 {
252 int cfg;
253
254 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
255 cfg &= ~CONFIG_100BASEFX;
256 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
257 }
258
259 static void
260 lxtphy_set_fx(struct mii_softc *sc)
261 {
262 int cfg;
263
264 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
265 cfg |= CONFIG_100BASEFX;
266 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
267 }
Cache object: d5d668729eeb5cd4e53b7c51eb69a213
|