Line data Source code
1 : /* $OpenBSD: iophy.c,v 1.20 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: iophy.c,v 1.8 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 : * Intel 82553 PHY driver
60 : */
61 :
62 : #include <sys/param.h>
63 : #include <sys/systm.h>
64 : #include <sys/device.h>
65 : #include <sys/socket.h>
66 :
67 : #include <net/if.h>
68 : #include <net/if_var.h>
69 : #include <net/if_media.h>
70 :
71 : #include <dev/mii/mii.h>
72 : #include <dev/mii/miivar.h>
73 : #include <dev/mii/miidevs.h>
74 :
75 : #include <dev/mii/iophyreg.h>
76 :
77 : int iophymatch(struct device *, void *, void *);
78 : void iophyattach(struct device *, struct device *, void *);
79 :
80 : struct cfattach iophy_ca = {
81 : sizeof(struct mii_softc), iophymatch, iophyattach, mii_phy_detach
82 : };
83 :
84 : struct cfdriver iophy_cd = {
85 : NULL, "iophy", DV_DULL
86 : };
87 :
88 : int iophy_service(struct mii_softc *, struct mii_data *, int);
89 : void iophy_status(struct mii_softc *);
90 :
91 : const struct mii_phy_funcs iophy_funcs = {
92 : iophy_service, iophy_status, mii_phy_reset,
93 : };
94 :
95 : static const struct mii_phydesc iophys[] = {
96 : { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553,
97 : MII_STR_xxINTEL_I82553 },
98 : { MII_OUI_INTEL, MII_MODEL_INTEL_I82553,
99 : MII_STR_INTEL_I82553 },
100 :
101 : { 0, 0,
102 : NULL },
103 :
104 : };
105 :
106 : int
107 0 : iophymatch(parent, match, aux)
108 : struct device *parent;
109 : void *match;
110 : void *aux;
111 : {
112 0 : struct mii_attach_args *ma = aux;
113 :
114 0 : if (mii_phy_match(ma, iophys) != NULL)
115 0 : return (10);
116 :
117 0 : return (0);
118 0 : }
119 :
120 : void
121 0 : iophyattach(parent, self, aux)
122 : struct device *parent, *self;
123 : void *aux;
124 : {
125 0 : struct mii_softc *sc = (struct mii_softc *)self;
126 0 : struct mii_attach_args *ma = aux;
127 0 : struct mii_data *mii = ma->mii_data;
128 : const struct mii_phydesc *mpd;
129 :
130 0 : mpd = mii_phy_match(ma, iophys);
131 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
132 :
133 0 : sc->mii_inst = mii->mii_instance;
134 0 : sc->mii_phy = ma->mii_phyno;
135 0 : sc->mii_funcs = &iophy_funcs;
136 0 : sc->mii_pdata = mii;
137 0 : sc->mii_flags = ma->mii_flags;
138 :
139 0 : PHY_RESET(sc);
140 :
141 0 : sc->mii_capabilities =
142 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
143 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
144 0 : mii_phy_add_media(sc);
145 0 : }
146 :
147 : int
148 0 : iophy_service(sc, mii, cmd)
149 : struct mii_softc *sc;
150 : struct mii_data *mii;
151 : int cmd;
152 : {
153 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
154 : int reg;
155 :
156 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
157 0 : return (ENXIO);
158 :
159 0 : switch (cmd) {
160 : case MII_POLLSTAT:
161 : /*
162 : * If we're not polling our PHY instance, just return.
163 : */
164 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
165 0 : return (0);
166 : break;
167 :
168 : case MII_MEDIACHG:
169 : /*
170 : * If the media indicates a different PHY instance,
171 : * isolate ourselves.
172 : */
173 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
174 0 : reg = PHY_READ(sc, MII_BMCR);
175 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
176 0 : return (0);
177 : }
178 :
179 : /*
180 : * If the interface is not up, don't do anything.
181 : */
182 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
183 : break;
184 :
185 0 : mii_phy_setmedia(sc);
186 0 : break;
187 :
188 : case MII_TICK:
189 : /*
190 : * If we're not currently selected, just return.
191 : */
192 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
193 0 : return (0);
194 :
195 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
196 0 : return (0);
197 : break;
198 :
199 : case MII_DOWN:
200 0 : mii_phy_down(sc);
201 0 : return (0);
202 : }
203 :
204 : /* Update the media status. */
205 0 : mii_phy_status(sc);
206 :
207 : /* Callback if something changed. */
208 0 : mii_phy_update(sc, cmd);
209 0 : return (0);
210 0 : }
211 :
212 : void
213 0 : iophy_status(sc)
214 : struct mii_softc *sc;
215 : {
216 0 : struct mii_data *mii = sc->mii_pdata;
217 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
218 : int bmsr, bmcr, ext0;
219 :
220 0 : mii->mii_media_status = IFM_AVALID;
221 0 : mii->mii_media_active = IFM_ETHER;
222 :
223 0 : bmsr = PHY_READ(sc, MII_BMSR) |
224 0 : PHY_READ(sc, MII_BMSR);
225 0 : if (bmsr & BMSR_LINK)
226 0 : mii->mii_media_status |= IFM_ACTIVE;
227 :
228 0 : bmcr = PHY_READ(sc, MII_BMCR);
229 0 : if (bmcr & BMCR_ISO) {
230 0 : mii->mii_media_active |= IFM_NONE;
231 0 : mii->mii_media_status = 0;
232 0 : return;
233 : }
234 :
235 0 : if (bmcr & BMCR_LOOP)
236 0 : mii->mii_media_active |= IFM_LOOP;
237 :
238 0 : if (bmcr & BMCR_AUTOEN) {
239 0 : if ((bmsr & BMSR_ACOMP) == 0) {
240 : /* Erg, still trying, I guess... */
241 0 : mii->mii_media_active |= IFM_NONE;
242 0 : return;
243 : }
244 :
245 0 : ext0 = PHY_READ(sc, MII_IOPHY_EXT0);
246 0 : if (ext0 & EXT0_SPEED) {
247 0 : if (bmsr & BMSR_100TXFDX ||
248 0 : bmsr & BMSR_100TXHDX)
249 0 : mii->mii_media_active |= IFM_100_TX;
250 : else
251 0 : mii->mii_media_active |= IFM_100_T4;
252 : } else
253 0 : mii->mii_media_active |= IFM_10_T;
254 :
255 0 : if (ext0 & EXT0_DUPLEX)
256 0 : mii->mii_media_active |= IFM_FDX;
257 : else
258 0 : mii->mii_media_active |= IFM_HDX;
259 : } else
260 0 : mii->mii_media_active = ife->ifm_media;
261 0 : }
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