1 /* $NetBSD: glxtphy.c,v 1.25 2016/07/07 06:55:41 msaitoh Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 1999, 2000, 2001 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 /*
58 * Driver for the Level One LXT-1000 10/100/1000 PHY.
59 */
60
61 #include <sys/cdefs.h>
62 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.25 2016/07/07 06:55:41 msaitoh Exp $");
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/device.h>
68 #include <sys/socket.h>
69 #include <sys/errno.h>
70
71 #include <net/if.h>
72 #include <net/if_media.h>
73
74 #include <dev/mii/mii.h>
75 #include <dev/mii/miivar.h>
76 #include <dev/mii/miidevs.h>
77
78 #include <dev/mii/glxtphyreg.h>
79
80 static int glxtphymatch(device_t, cfdata_t, void *);
81 static void glxtphyattach(device_t, device_t, void *);
82
83 CFATTACH_DECL_NEW(glxtphy, sizeof(struct mii_softc),
84 glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate);
85
86 static int glxtphy_service(struct mii_softc *, struct mii_data *, int);
87 static void glxtphy_status(struct mii_softc *);
88
89 static const struct mii_phy_funcs glxtphy_funcs = {
90 glxtphy_service, glxtphy_status, mii_phy_reset,
91 };
92
93 static const struct mii_phydesc glxtphys[] = {
94 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD,
95 MII_STR_LEVEL1_LXT1000_OLD },
96
97 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD,
98 MII_STR_LEVEL1_LXT1000_OLD },
99
100 { 0, 0,
101 NULL },
102 };
103
104 static int
glxtphymatch(device_t parent,cfdata_t match,void * aux)105 glxtphymatch(device_t parent, cfdata_t match,
106 void *aux)
107 {
108 struct mii_attach_args *ma = aux;
109
110 if (mii_phy_match(ma, glxtphys) != NULL)
111 return (10);
112
113 return (0);
114 }
115
116 static void
glxtphyattach(device_t parent,device_t self,void * aux)117 glxtphyattach(device_t parent, device_t self, void *aux)
118 {
119 struct mii_softc *sc = device_private(self);
120 struct mii_attach_args *ma = aux;
121 struct mii_data *mii = ma->mii_data;
122 const struct mii_phydesc *mpd;
123
124 mpd = mii_phy_match(ma, glxtphys);
125 aprint_naive(": Media interface\n");
126 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
127
128 sc->mii_dev = self;
129 sc->mii_inst = mii->mii_instance;
130 sc->mii_phy = ma->mii_phyno;
131 sc->mii_funcs = &glxtphy_funcs;
132 sc->mii_pdata = mii;
133 sc->mii_flags = ma->mii_flags;
134 sc->mii_anegticks = MII_ANEGTICKS;
135
136 PHY_RESET(sc);
137
138 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
139 if (sc->mii_capabilities & BMSR_EXTSTAT)
140 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
141
142 aprint_normal_dev(self, "");
143 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
144 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
145 aprint_error("no media present");
146 else
147 mii_phy_add_media(sc);
148 aprint_normal("\n");
149 }
150
151 static int
glxtphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)152 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
153 {
154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
155 int reg;
156
157 switch (cmd) {
158 case MII_POLLSTAT:
159 /*
160 * If we're not polling our PHY instance, just return.
161 */
162 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
163 return (0);
164 break;
165
166 case MII_MEDIACHG:
167 /*
168 * If the media indicates a different PHY instance,
169 * isolate ourselves.
170 */
171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
172 reg = PHY_READ(sc, MII_BMCR);
173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
174 return (0);
175 }
176
177 /*
178 * If the interface is not up, don't do anything.
179 */
180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
181 break;
182
183 mii_phy_setmedia(sc);
184 break;
185
186 case MII_TICK:
187 /*
188 * If we're not currently selected, just return.
189 */
190 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
191 return (0);
192
193 if (mii_phy_tick(sc) == EJUSTRETURN)
194 return (0);
195 break;
196
197 case MII_DOWN:
198 mii_phy_down(sc);
199 return (0);
200 }
201
202 /* Update the media status. */
203 mii_phy_status(sc);
204
205 /* Callback if something changed. */
206 mii_phy_update(sc, cmd);
207 return (0);
208 }
209
210 static void
glxtphy_status(struct mii_softc * sc)211 glxtphy_status(struct mii_softc *sc)
212 {
213 struct mii_data *mii = sc->mii_pdata;
214 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
215 int bmcr, qsr, gtsr;
216
217 mii->mii_media_status = IFM_AVALID;
218 mii->mii_media_active = IFM_ETHER;
219
220 qsr = PHY_READ(sc, MII_GLXTPHY_QSR);
221
222 if (qsr & QSR_LINK)
223 mii->mii_media_status |= IFM_ACTIVE;
224
225 bmcr = PHY_READ(sc, MII_BMCR);
226 if (bmcr & BMCR_ISO) {
227 mii->mii_media_active |= IFM_NONE;
228 mii->mii_media_status = 0;
229 return;
230 }
231
232 if (bmcr & BMCR_LOOP)
233 mii->mii_media_active |= IFM_LOOP;
234
235 if (bmcr & BMCR_AUTOEN) {
236 /*
237 * The media status bits are only valid of autonegotiation
238 * has completed (or it's disabled).
239 */
240 if ((qsr & QSR_ACOMP) == 0) {
241 /* Erg, still trying, I guess... */
242 mii->mii_media_active |= IFM_NONE;
243 return;
244 }
245
246 switch (QSR_SPEED_get(qsr)) {
247 case SPEED_1000:
248 mii->mii_media_active |= IFM_1000_T;
249 gtsr = PHY_READ(sc, MII_100T2SR);
250 if (gtsr & GTSR_MS_RES)
251 mii->mii_media_active |= IFM_ETH_MASTER;
252 break;
253
254 case SPEED_100:
255 mii->mii_media_active |= IFM_100_TX;
256 break;
257
258 case SPEED_10_MII:
259 case SPEED_10_SERIAL:
260 mii->mii_media_active |= IFM_10_T;
261 break;
262 }
263
264 if (qsr & QSR_DUPLEX)
265 mii->mii_media_active |=
266 IFM_FDX | mii_phy_flowstatus(sc);
267 else
268 mii->mii_media_active |= IFM_HDX;
269 } else
270 mii->mii_media_active = ife->ifm_media;
271 }
272