1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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 /*
59 * Driver for Altima AC101 10/100 PHY
60 */
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/kernel.h>
65 #include <sys/socket.h>
66 #include <sys/errno.h>
67 #include <sys/module.h>
68 #include <sys/bus.h>
69
70 #include <net/if.h>
71 #include <net/if_media.h>
72
73 #include <dev/mii/mii.h>
74 #include <dev/mii/miivar.h>
75 #include "miidevs.h"
76
77 #include <dev/mii/acphyreg.h>
78
79 #include "miibus_if.h"
80
81 static int acphy_probe(device_t);
82 static int acphy_attach(device_t);
83
84 static device_method_t acphy_methods[] = {
85 /* device interface */
86 DEVMETHOD(device_probe, acphy_probe),
87 DEVMETHOD(device_attach, acphy_attach),
88 DEVMETHOD(device_detach, mii_phy_detach),
89 DEVMETHOD(device_shutdown, bus_generic_shutdown),
90 DEVMETHOD_END
91 };
92
93 static driver_t acphy_driver = {
94 "acphy",
95 acphy_methods,
96 sizeof(struct mii_softc)
97 };
98
99 DRIVER_MODULE(acphy, miibus, acphy_driver, 0, 0);
100
101 static int acphy_service(struct mii_softc *, struct mii_data *, int);
102 static void acphy_reset(struct mii_softc *);
103 static void acphy_status(struct mii_softc *);
104
105 static const struct mii_phydesc acphys[] = {
106 MII_PHY_DESC(ALTIMA, AC101),
107 MII_PHY_DESC(ALTIMA, AC101L),
108 /* XXX This is reported to work, but it's not from any data sheet. */
109 MII_PHY_DESC(ALTIMA, ACXXX),
110 MII_PHY_END
111 };
112
113 static const struct mii_phy_funcs acphy_funcs = {
114 acphy_service,
115 acphy_status,
116 acphy_reset
117 };
118
119 static int
acphy_probe(device_t dev)120 acphy_probe(device_t dev)
121 {
122
123 return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT));
124 }
125
126 static int
acphy_attach(device_t dev)127 acphy_attach(device_t dev)
128 {
129 struct mii_softc *sc;
130
131 sc = device_get_softc(dev);
132
133 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &acphy_funcs, 0);
134
135 PHY_RESET(sc);
136
137 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
138 device_printf(dev, " ");
139
140 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL)
141 if ((PHY_READ(sc, MII_ACPHY_MCTL) & AC_MCTL_FX_SEL) != 0) {
142 sc->mii_flags |= MIIF_HAVEFIBER;
143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst));
144 printf("100baseFX, ");
145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst));
146 printf("100baseFX-FDX, ");
147 }
148 #undef ADD
149
150 mii_phy_add_media(sc);
151 printf("\n");
152
153 MIIBUS_MEDIAINIT(sc->mii_dev);
154 return (0);
155 }
156
157 static int
acphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)158 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
159 {
160 int reg;
161
162 switch (cmd) {
163 case MII_POLLSTAT:
164 break;
165
166 case MII_MEDIACHG:
167 /* Wake & deisolate up if necessary */
168 reg = PHY_READ(sc, MII_BMCR);
169 if (reg & (BMCR_ISO | BMCR_PDOWN))
170 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
171
172 mii_phy_setmedia(sc);
173 break;
174
175 case MII_TICK:
176 /*
177 * This PHY's autonegotiation doesn't need to be kicked.
178 */
179 break;
180 }
181
182 /* Update the media status. */
183 PHY_STATUS(sc);
184
185 /* Callback if something changed. */
186 mii_phy_update(sc, cmd);
187 return (0);
188 }
189
190 static void
acphy_status(struct mii_softc * sc)191 acphy_status(struct mii_softc *sc)
192 {
193 struct mii_data *mii = sc->mii_pdata;
194 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
195 int bmsr, bmcr, diag;
196
197 mii->mii_media_status = IFM_AVALID;
198 mii->mii_media_active = IFM_ETHER;
199
200 bmsr = PHY_READ(sc, MII_BMSR) |
201 PHY_READ(sc, MII_BMSR);
202 if (bmsr & BMSR_LINK)
203 mii->mii_media_status |= IFM_ACTIVE;
204
205 bmcr = PHY_READ(sc, MII_BMCR);
206 if (bmcr & BMCR_ISO) {
207 mii->mii_media_active |= IFM_NONE;
208 mii->mii_media_status = 0;
209 return;
210 }
211
212 if (bmcr & BMCR_LOOP)
213 mii->mii_media_active |= IFM_LOOP;
214
215 if (bmcr & BMCR_AUTOEN) {
216 if ((bmsr & BMSR_ACOMP) == 0) {
217 /* Erg, still trying, I guess... */
218 mii->mii_media_active |= IFM_NONE;
219 return;
220 }
221 diag = PHY_READ(sc, MII_ACPHY_DIAG);
222 if (diag & AC_DIAG_SPEED)
223 mii->mii_media_active |= IFM_100_TX;
224 else
225 mii->mii_media_active |= IFM_10_T;
226
227 if (diag & AC_DIAG_DUPLEX)
228 mii->mii_media_active |=
229 IFM_FDX | mii_phy_flowstatus(sc);
230 else
231 mii->mii_media_active |= IFM_HDX;
232 } else
233 mii->mii_media_active = ife->ifm_media;
234 }
235
236 static void
acphy_reset(struct mii_softc * sc)237 acphy_reset(struct mii_softc *sc)
238 {
239
240 mii_phy_reset(sc);
241 PHY_WRITE(sc, MII_ACPHY_INT, 0);
242 }
243