Line data Source code
1 : /* $OpenBSD: sqphy.c,v 1.21 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: sqphy.c,v 1.17 2000/02/02 23:34:57 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 Seeq 80220/80221 and 80223 10/100 ethernet PHYs
60 : */
61 :
62 : #include <sys/param.h>
63 : #include <sys/systm.h>
64 : #include <sys/device.h>
65 : #include <sys/socket.h>
66 : #include <sys/errno.h>
67 :
68 : #include <net/if.h>
69 : #include <net/if_var.h>
70 : #include <net/if_media.h>
71 :
72 : #include <dev/mii/mii.h>
73 : #include <dev/mii/miivar.h>
74 : #include <dev/mii/miidevs.h>
75 :
76 : #include <dev/mii/sqphyreg.h>
77 :
78 : int sqphymatch(struct device *, void *, void *);
79 : void sqphyattach(struct device *, struct device *, void *);
80 :
81 : struct cfattach sqphy_ca = {
82 : sizeof(struct mii_softc), sqphymatch, sqphyattach, mii_phy_detach
83 : };
84 :
85 : struct cfdriver sqphy_cd = {
86 : NULL, "sqphy", DV_DULL
87 : };
88 :
89 : int sqphy_service(struct mii_softc *, struct mii_data *, int);
90 : void sqphy_status(struct mii_softc *);
91 :
92 : const struct mii_phy_funcs sqphy_funcs = {
93 : sqphy_service, sqphy_status, mii_phy_reset,
94 : };
95 :
96 : static const struct mii_phydesc sqphys[] = {
97 : { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80220,
98 : MII_STR_xxSEEQ_80220 },
99 : { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80225,
100 : MII_STR_xxSEEQ_80225 },
101 : { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_84220,
102 : MII_STR_xxSEEQ_84220 },
103 :
104 : { 0, 0,
105 : NULL },
106 : };
107 :
108 : int
109 0 : sqphymatch(struct device *parent, void *match, void *aux)
110 : {
111 0 : struct mii_attach_args *ma = aux;
112 :
113 0 : if (mii_phy_match(ma, sqphys) != NULL)
114 0 : return (10);
115 :
116 0 : return (0);
117 0 : }
118 :
119 : void
120 0 : sqphyattach(struct device *parent, struct device *self, void *aux)
121 : {
122 0 : struct mii_softc *sc = (struct mii_softc *)self;
123 0 : struct mii_attach_args *ma = aux;
124 0 : struct mii_data *mii = ma->mii_data;
125 : const struct mii_phydesc *mpd;
126 :
127 0 : mpd = mii_phy_match(ma, sqphys);
128 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
129 :
130 0 : sc->mii_inst = mii->mii_instance;
131 0 : sc->mii_phy = ma->mii_phyno;
132 0 : sc->mii_funcs = &sqphy_funcs;
133 0 : sc->mii_pdata = mii;
134 0 : sc->mii_flags = ma->mii_flags;
135 :
136 0 : PHY_RESET(sc);
137 :
138 0 : sc->mii_capabilities =
139 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
140 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
141 0 : mii_phy_add_media(sc);
142 0 : }
143 :
144 : int
145 0 : sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
146 : {
147 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
148 : int reg;
149 :
150 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
151 0 : return (ENXIO);
152 :
153 0 : switch (cmd) {
154 : case MII_POLLSTAT:
155 : /*
156 : * If we're not polling our PHY instance, just return.
157 : */
158 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
159 0 : return (0);
160 : break;
161 :
162 : case MII_MEDIACHG:
163 : /*
164 : * If the media indicates a different PHY instance,
165 : * isolate ourselves.
166 : */
167 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
168 0 : reg = PHY_READ(sc, MII_BMCR);
169 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
170 0 : return (0);
171 : }
172 :
173 : /*
174 : * If the interface is not up, don't do anything.
175 : */
176 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
177 : break;
178 :
179 0 : mii_phy_setmedia(sc);
180 0 : break;
181 :
182 : case MII_TICK:
183 : /*
184 : * If we're not currently selected, just return.
185 : */
186 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
187 0 : return (0);
188 :
189 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
190 0 : return (0);
191 : break;
192 :
193 : case MII_DOWN:
194 0 : mii_phy_down(sc);
195 0 : return (0);
196 : }
197 :
198 : /* Update the media status. */
199 0 : mii_phy_status(sc);
200 :
201 : /* Callback if something changed. */
202 0 : mii_phy_update(sc, cmd);
203 0 : return (0);
204 0 : }
205 :
206 : void
207 0 : sqphy_status(struct mii_softc *sc)
208 : {
209 0 : struct mii_data *mii = sc->mii_pdata;
210 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
211 : int bmsr, bmcr, status;
212 :
213 0 : mii->mii_media_status = IFM_AVALID;
214 0 : mii->mii_media_active = IFM_ETHER;
215 :
216 0 : bmsr = PHY_READ(sc, MII_BMSR) |
217 0 : PHY_READ(sc, MII_BMSR);
218 0 : if (bmsr & BMSR_LINK)
219 0 : mii->mii_media_status |= IFM_ACTIVE;
220 :
221 0 : bmcr = PHY_READ(sc, MII_BMCR);
222 0 : if (bmcr & BMCR_ISO) {
223 0 : mii->mii_media_active |= IFM_NONE;
224 0 : mii->mii_media_status = 0;
225 0 : return;
226 : }
227 :
228 0 : if (bmcr & BMCR_LOOP)
229 0 : mii->mii_media_active |= IFM_LOOP;
230 :
231 0 : if (bmcr & BMCR_AUTOEN) {
232 0 : if ((bmsr & BMSR_ACOMP) == 0) {
233 : /* Erg, still trying, I guess... */
234 0 : mii->mii_media_active |= IFM_NONE;
235 0 : return;
236 : }
237 : /*
238 : * Note: don't get fancy here -- the 80225 only
239 : * supports the SPD_DET and DPLX_DET bits in
240 : * the STATUS register.
241 : */
242 0 : status = PHY_READ(sc, MII_SQPHY_STATUS);
243 0 : if (status & STATUS_SPD_DET)
244 0 : mii->mii_media_active |= IFM_100_TX;
245 : else
246 0 : mii->mii_media_active |= IFM_10_T;
247 :
248 0 : if (status & STATUS_DPLX_DET)
249 0 : mii->mii_media_active |= IFM_FDX;
250 : else
251 0 : mii->mii_media_active |= IFM_HDX;
252 : } else
253 0 : mii->mii_media_active = ife->ifm_media;
254 0 : }
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