Line data Source code
1 : /* $OpenBSD: inphy.c,v 1.21 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: inphy.c,v 1.18 2000/02/02 23:34:56 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 : /*
59 : * driver for Intel's i82555 ethernet 10/100 PHY
60 : * Data Sheet available from www.intel.com
61 : */
62 :
63 : #include <sys/param.h>
64 : #include <sys/systm.h>
65 : #include <sys/device.h>
66 : #include <sys/socket.h>
67 : #include <sys/errno.h>
68 :
69 : #include <net/if.h>
70 : #include <net/if_var.h>
71 : #include <net/if_media.h>
72 :
73 : #include <dev/mii/mii.h>
74 : #include <dev/mii/miivar.h>
75 : #include <dev/mii/miidevs.h>
76 :
77 : #include <dev/mii/inphyreg.h>
78 :
79 : int inphymatch(struct device *, void *, void *);
80 : void inphyattach(struct device *, struct device *, void *);
81 :
82 : struct cfattach inphy_ca = {
83 : sizeof(struct mii_softc), inphymatch, inphyattach, mii_phy_detach
84 : };
85 :
86 : struct cfdriver inphy_cd = {
87 : NULL, "inphy", DV_DULL
88 : };
89 :
90 : int inphy_service(struct mii_softc *, struct mii_data *, int);
91 : void inphy_status(struct mii_softc *);
92 :
93 : const struct mii_phy_funcs inphy_funcs = {
94 : inphy_service, inphy_status, mii_phy_reset,
95 : };
96 :
97 : static const struct mii_phydesc inphys[] = {
98 : { MII_OUI_INTEL, MII_MODEL_INTEL_I82555,
99 : MII_STR_INTEL_I82555 },
100 : { MII_OUI_INTEL, MII_MODEL_INTEL_I82562EM,
101 : MII_STR_INTEL_I82562EM },
102 : { MII_OUI_INTEL, MII_MODEL_INTEL_I82562ET,
103 : MII_STR_INTEL_I82562ET },
104 : { MII_OUI_INTEL, MII_MODEL_INTEL_I82562G,
105 : MII_STR_INTEL_I82562G },
106 :
107 : { 0, 0,
108 : NULL },
109 : };
110 :
111 : int
112 0 : inphymatch(parent, match, aux)
113 : struct device *parent;
114 : void *match;
115 : void *aux;
116 : {
117 0 : struct mii_attach_args *ma = aux;
118 :
119 0 : if (mii_phy_match(ma, inphys) != NULL)
120 0 : return (10);
121 :
122 0 : return (0);
123 0 : }
124 :
125 : void
126 0 : inphyattach(parent, self, aux)
127 : struct device *parent, *self;
128 : void *aux;
129 : {
130 0 : struct mii_softc *sc = (struct mii_softc *)self;
131 0 : struct mii_attach_args *ma = aux;
132 0 : struct mii_data *mii = ma->mii_data;
133 : const struct mii_phydesc *mpd;
134 :
135 0 : mpd = mii_phy_match(ma, inphys);
136 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
137 :
138 0 : sc->mii_inst = mii->mii_instance;
139 0 : sc->mii_phy = ma->mii_phyno;
140 0 : sc->mii_funcs = &inphy_funcs;
141 0 : sc->mii_pdata = mii;
142 0 : sc->mii_flags = ma->mii_flags;
143 :
144 0 : PHY_RESET(sc);
145 :
146 0 : sc->mii_capabilities =
147 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
148 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
149 0 : mii_phy_add_media(sc);
150 0 : }
151 :
152 : int
153 0 : inphy_service(sc, mii, cmd)
154 : struct mii_softc *sc;
155 : struct mii_data *mii;
156 : int cmd;
157 : {
158 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
159 : int reg;
160 :
161 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
162 0 : return (ENXIO);
163 :
164 0 : switch (cmd) {
165 : case MII_POLLSTAT:
166 : /*
167 : * If we're not polling our PHY instance, just return.
168 : */
169 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
170 0 : return (0);
171 : break;
172 :
173 : case MII_MEDIACHG:
174 : /*
175 : * If the media indicates a different PHY instance,
176 : * isolate ourselves.
177 : */
178 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
179 0 : reg = PHY_READ(sc, MII_BMCR);
180 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
181 0 : return (0);
182 : }
183 :
184 : /*
185 : * If the interface is not up, don't do anything.
186 : */
187 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
188 : break;
189 :
190 0 : mii_phy_setmedia(sc);
191 0 : break;
192 :
193 : case MII_TICK:
194 : /*
195 : * If we're not currently selected, just return.
196 : */
197 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
198 0 : return (0);
199 :
200 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
201 0 : return (0);
202 : break;
203 :
204 : case MII_DOWN:
205 0 : mii_phy_down(sc);
206 0 : return (0);
207 : }
208 :
209 : /* Update the media status. */
210 0 : mii_phy_status(sc);
211 :
212 : /* Callback if something changed. */
213 0 : mii_phy_update(sc, cmd);
214 0 : return (0);
215 0 : }
216 :
217 : void
218 0 : inphy_status(sc)
219 : struct mii_softc *sc;
220 : {
221 0 : struct mii_data *mii = sc->mii_pdata;
222 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
223 : int bmsr, bmcr, scr;
224 :
225 0 : mii->mii_media_status = IFM_AVALID;
226 0 : mii->mii_media_active = IFM_ETHER;
227 :
228 0 : bmsr = PHY_READ(sc, MII_BMSR) |
229 0 : PHY_READ(sc, MII_BMSR);
230 0 : if (bmsr & BMSR_LINK)
231 0 : mii->mii_media_status |= IFM_ACTIVE;
232 :
233 0 : bmcr = PHY_READ(sc, MII_BMCR);
234 0 : if (bmcr & BMCR_ISO) {
235 0 : mii->mii_media_active |= IFM_NONE;
236 0 : mii->mii_media_status = 0;
237 0 : return;
238 : }
239 :
240 0 : if (bmcr & BMCR_LOOP)
241 0 : mii->mii_media_active |= IFM_LOOP;
242 :
243 0 : if (bmcr & BMCR_AUTOEN) {
244 0 : if ((bmsr & BMSR_ACOMP) == 0) {
245 : /* Erg, still trying, I guess... */
246 0 : mii->mii_media_active |= IFM_NONE;
247 0 : return;
248 : }
249 :
250 0 : scr = PHY_READ(sc, MII_INPHY_SCR);
251 0 : if (scr & SCR_S100)
252 0 : mii->mii_media_active |= IFM_100_TX;
253 0 : else if ((bmsr & BMSR_100T4) && (scr & SCR_T4))
254 0 : mii->mii_media_active |= IFM_100_T4;
255 : else
256 0 : mii->mii_media_active |= IFM_10_T;
257 :
258 0 : if (scr & SCR_FDX)
259 0 : mii->mii_media_active |= IFM_FDX;
260 : else
261 0 : mii->mii_media_active |= IFM_HDX;
262 : } else
263 0 : mii->mii_media_active = ife->ifm_media;
264 0 : }
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