FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/acphy.c
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
3 *
4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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 THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*-
34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55 */
56
57 #include <sys/cdefs.h>
58 __FBSDID("$FreeBSD$");
59
60 /*
61 * Driver for Altima AC101 10/100 PHY
62 */
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/socket.h>
68 #include <sys/errno.h>
69 #include <sys/module.h>
70 #include <sys/bus.h>
71
72 #include <net/if.h>
73 #include <net/if_media.h>
74
75 #include <dev/mii/mii.h>
76 #include <dev/mii/miivar.h>
77 #include "miidevs.h"
78
79 #include <dev/mii/acphyreg.h>
80
81 #include "miibus_if.h"
82
83 static int acphy_probe(device_t);
84 static int acphy_attach(device_t);
85
86 static device_method_t acphy_methods[] = {
87 /* device interface */
88 DEVMETHOD(device_probe, acphy_probe),
89 DEVMETHOD(device_attach, acphy_attach),
90 DEVMETHOD(device_detach, mii_phy_detach),
91 DEVMETHOD(device_shutdown, bus_generic_shutdown),
92 DEVMETHOD_END
93 };
94
95 static devclass_t acphy_devclass;
96
97 static driver_t acphy_driver = {
98 "acphy",
99 acphy_methods,
100 sizeof(struct mii_softc)
101 };
102
103 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
104
105 static int acphy_service(struct mii_softc *, struct mii_data *, int);
106 static void acphy_reset(struct mii_softc *);
107 static void acphy_status(struct mii_softc *);
108
109 static const struct mii_phydesc acphys[] = {
110 MII_PHY_DESC(ALTIMA, AC101),
111 MII_PHY_DESC(ALTIMA, AC101L),
112 /* XXX This is reported to work, but it's not from any data sheet. */
113 MII_PHY_DESC(ALTIMA, ACXXX),
114 MII_PHY_END
115 };
116
117 static const struct mii_phy_funcs acphy_funcs = {
118 acphy_service,
119 acphy_status,
120 acphy_reset
121 };
122
123 static int
124 acphy_probe(device_t dev)
125 {
126
127 return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT));
128 }
129
130 static int
131 acphy_attach(device_t dev)
132 {
133 struct mii_softc *sc;
134
135 sc = device_get_softc(dev);
136
137 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &acphy_funcs, 0);
138
139 PHY_RESET(sc);
140
141 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
142 device_printf(dev, " ");
143
144 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL)
145 if ((PHY_READ(sc, MII_ACPHY_MCTL) & AC_MCTL_FX_SEL) != 0) {
146 sc->mii_flags |= MIIF_HAVEFIBER;
147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst));
148 printf("100baseFX, ");
149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst));
150 printf("100baseFX-FDX, ");
151 }
152 #undef ADD
153
154 mii_phy_add_media(sc);
155 printf("\n");
156
157 MIIBUS_MEDIAINIT(sc->mii_dev);
158 return (0);
159 }
160
161 static int
162 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
163 {
164 int reg;
165
166 switch (cmd) {
167 case MII_POLLSTAT:
168 break;
169
170 case MII_MEDIACHG:
171 /* Wake & deisolate up if necessary */
172 reg = PHY_READ(sc, MII_BMCR);
173 if (reg & (BMCR_ISO | BMCR_PDOWN))
174 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
175
176 mii_phy_setmedia(sc);
177 break;
178
179 case MII_TICK:
180 /*
181 * This PHY's autonegotiation doesn't need to be kicked.
182 */
183 break;
184 }
185
186 /* Update the media status. */
187 PHY_STATUS(sc);
188
189 /* Callback if something changed. */
190 mii_phy_update(sc, cmd);
191 return (0);
192 }
193
194 static void
195 acphy_status(struct mii_softc *sc)
196 {
197 struct mii_data *mii = sc->mii_pdata;
198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
199 int bmsr, bmcr, diag;
200
201 mii->mii_media_status = IFM_AVALID;
202 mii->mii_media_active = IFM_ETHER;
203
204 bmsr = PHY_READ(sc, MII_BMSR) |
205 PHY_READ(sc, MII_BMSR);
206 if (bmsr & BMSR_LINK)
207 mii->mii_media_status |= IFM_ACTIVE;
208
209 bmcr = PHY_READ(sc, MII_BMCR);
210 if (bmcr & BMCR_ISO) {
211 mii->mii_media_active |= IFM_NONE;
212 mii->mii_media_status = 0;
213 return;
214 }
215
216 if (bmcr & BMCR_LOOP)
217 mii->mii_media_active |= IFM_LOOP;
218
219 if (bmcr & BMCR_AUTOEN) {
220 if ((bmsr & BMSR_ACOMP) == 0) {
221 /* Erg, still trying, I guess... */
222 mii->mii_media_active |= IFM_NONE;
223 return;
224 }
225 diag = PHY_READ(sc, MII_ACPHY_DIAG);
226 if (diag & AC_DIAG_SPEED)
227 mii->mii_media_active |= IFM_100_TX;
228 else
229 mii->mii_media_active |= IFM_10_T;
230
231 if (diag & AC_DIAG_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 acphy_reset(struct mii_softc *sc)
242 {
243
244 mii_phy_reset(sc);
245 PHY_WRITE(sc, MII_ACPHY_INT, 0);
246 }
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