Line data Source code
1 : /* $OpenBSD: acphy.c,v 1.9 2015/03/14 03:38:47 jsg Exp $ */
2 : /* $NetBSD: acphy.c,v 1.13 2003/04/29 01:49:33 thorpej Exp $ */
3 :
4 : /*
5 : * Copyright 2001 Wasabi Systems, Inc.
6 : * All rights reserved.
7 : *
8 : * Written by Jason R. Thorpe for Wasabi Systems, Inc.
9 : *
10 : * Redistribution and use in source and binary forms, with or without
11 : * modification, are permitted provided that the following conditions
12 : * are met:
13 : * 1. Redistributions of source code must retain the above copyright
14 : * notice, this list of conditions and the following disclaimer.
15 : * 2. Redistributions in binary form must reproduce the above copyright
16 : * notice, this list of conditions and the following disclaimer in the
17 : * documentation and/or other materials provided with the distribution.
18 : * 3. All advertising materials mentioning features or use of this software
19 : * must display the following acknowledgement:
20 : * This product includes software developed for the NetBSD Project by
21 : * Wasabi Systems, Inc.
22 : * 4. The name of Wasabi Systems, Inc. may not be used to endorse
23 : * or promote products derived from this software without specific prior
24 : * written permission.
25 : *
26 : * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
27 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 : * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
30 : * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 : * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 : * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 : * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 : * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 : * POSSIBILITY OF SUCH DAMAGE.
37 : */
38 :
39 : /*
40 : * Driver for the Altima AC101 PHY.
41 : */
42 :
43 : #include <sys/param.h>
44 : #include <sys/systm.h>
45 : #include <sys/device.h>
46 : #include <sys/socket.h>
47 : #include <sys/errno.h>
48 :
49 : #include <net/if.h>
50 : #include <net/if_var.h>
51 : #include <net/if_media.h>
52 :
53 : #include <dev/mii/mii.h>
54 : #include <dev/mii/miivar.h>
55 : #include <dev/mii/miidevs.h>
56 :
57 : #include <dev/mii/acphyreg.h>
58 :
59 : int acphymatch(struct device *, void *, void *);
60 : void acphyattach(struct device *, struct device *, void *);
61 :
62 : struct cfattach acphy_ca = {
63 : sizeof(struct mii_softc), acphymatch, acphyattach, mii_phy_detach
64 : };
65 :
66 : struct cfdriver acphy_cd = {
67 : NULL, "acphy", DV_DULL
68 : };
69 :
70 : int acphy_service(struct mii_softc *, struct mii_data *, int);
71 : void acphy_status(struct mii_softc *);
72 :
73 : const struct mii_phy_funcs acphy_funcs = {
74 : acphy_service, acphy_status, mii_phy_reset,
75 : };
76 :
77 : static const struct mii_phydesc acphys[] = {
78 : { MII_OUI_xxALTIMA, MII_MODEL_xxALTIMA_AC101,
79 : MII_STR_xxALTIMA_AC101 },
80 : { MII_OUI_xxALTIMA, MII_MODEL_xxALTIMA_AC101L,
81 : MII_STR_xxALTIMA_AC101L },
82 : { MII_OUI_xxALTIMA, MII_MODEL_xxALTIMA_AC_UNKNOWN,
83 : MII_STR_xxALTIMA_AC_UNKNOWN },
84 :
85 : { 0, 0,
86 : NULL },
87 : };
88 :
89 : int
90 0 : acphymatch(struct device *parent, void *match, void *aux)
91 : {
92 0 : struct mii_attach_args *ma = aux;
93 :
94 0 : if (mii_phy_match(ma, acphys) != NULL)
95 0 : return (10);
96 :
97 0 : return (0);
98 0 : }
99 :
100 : void
101 0 : acphyattach(struct device *parent, struct device *self, void *aux)
102 : {
103 0 : struct mii_softc *sc = (struct mii_softc *)self;
104 0 : struct mii_attach_args *ma = aux;
105 0 : struct mii_data *mii = ma->mii_data;
106 : const struct mii_phydesc *mpd;
107 :
108 0 : mpd = mii_phy_match(ma, acphys);
109 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
110 :
111 0 : sc->mii_inst = mii->mii_instance;
112 0 : sc->mii_phy = ma->mii_phyno;
113 0 : sc->mii_funcs = &acphy_funcs;
114 0 : sc->mii_pdata = mii;
115 0 : sc->mii_flags = ma->mii_flags;
116 0 : sc->mii_anegticks = MII_ANEGTICKS;
117 :
118 0 : PHY_RESET(sc);
119 :
120 : /*
121 : * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER?
122 : */
123 :
124 0 : sc->mii_capabilities =
125 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
126 :
127 : #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
128 0 : if (sc->mii_flags & MIIF_HAVEFIBER) {
129 0 : ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
130 : MII_MEDIA_100_TX);
131 0 : ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
132 : MII_MEDIA_100_TX);
133 0 : }
134 : #undef ADD
135 :
136 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
137 0 : mii_phy_add_media(sc);
138 0 : }
139 :
140 : int
141 0 : acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142 : {
143 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
144 : int reg;
145 :
146 0 : switch (cmd) {
147 : case MII_POLLSTAT:
148 : /*
149 : * If we're not polling our PHY instance, just return.
150 : */
151 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
152 0 : return (0);
153 : break;
154 :
155 : case MII_MEDIACHG:
156 : /*
157 : * If the media indicates a different PHY instance,
158 : * isolate ourselves.
159 : */
160 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
161 0 : reg = PHY_READ(sc, MII_BMCR);
162 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
163 0 : return (0);
164 : }
165 :
166 : /*
167 : * If the interface is not up, don't do anything.
168 : */
169 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
170 : break;
171 :
172 0 : mii_phy_setmedia(sc);
173 0 : break;
174 :
175 : case MII_TICK:
176 : /*
177 : * If we're not currently selected, just return.
178 : */
179 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
180 0 : return (0);
181 :
182 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
183 0 : return (0);
184 : break;
185 :
186 : case MII_DOWN:
187 0 : mii_phy_down(sc);
188 0 : return (0);
189 : }
190 :
191 : /* Update the media status. */
192 0 : mii_phy_status(sc);
193 :
194 : /* Callback if something changed. */
195 0 : mii_phy_update(sc, cmd);
196 0 : return (0);
197 0 : }
198 :
199 : void
200 0 : acphy_status(struct mii_softc *sc)
201 : {
202 0 : struct mii_data *mii = sc->mii_pdata;
203 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
204 : int bmsr, bmcr, dr;
205 :
206 0 : mii->mii_media_status = IFM_AVALID;
207 0 : mii->mii_media_active = IFM_ETHER;
208 :
209 0 : bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
210 0 : dr = PHY_READ(sc, MII_ACPHY_DR);
211 :
212 0 : if (bmsr & BMSR_LINK)
213 0 : mii->mii_media_status |= IFM_ACTIVE;
214 :
215 0 : bmcr = PHY_READ(sc, MII_BMCR);
216 0 : if (bmcr & BMCR_ISO) {
217 0 : mii->mii_media_active |= IFM_NONE;
218 0 : mii->mii_media_status = 0;
219 0 : return;
220 : }
221 :
222 0 : if (bmcr & BMCR_LOOP)
223 0 : mii->mii_media_active |= IFM_LOOP;
224 :
225 0 : if (bmcr & BMCR_AUTOEN) {
226 : /*
227 : * The media status bits are only valid if autonegotiation
228 : * has completed (or it's disabled).
229 : */
230 0 : if ((bmsr & BMSR_ACOMP) == 0) {
231 : /* Erg, still trying, I guess... */
232 0 : mii->mii_media_active |= IFM_NONE;
233 0 : return;
234 : }
235 :
236 0 : if (dr & DR_SPEED)
237 0 : mii->mii_media_active |= IFM_100_TX;
238 : else
239 0 : mii->mii_media_active |= IFM_10_T;
240 :
241 0 : if (dr & DR_DPLX)
242 0 : mii->mii_media_active |= IFM_FDX;
243 : else
244 0 : mii->mii_media_active |= IFM_HDX;
245 : } else
246 0 : mii->mii_media_active = ife->ifm_media;
247 0 : }
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