Line data Source code
1 : /* $OpenBSD: nsphyter.c,v 1.19 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: nsphyter.c,v 1.5 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
60 : * Data Sheet available from www.national.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/nsphyterreg.h>
78 :
79 : int nsphytermatch(struct device *, void *, void *);
80 : void nsphyterattach(struct device *, struct device *, void *);
81 :
82 : struct cfattach nsphyter_ca = {
83 : sizeof(struct mii_softc), nsphytermatch, nsphyterattach,
84 : mii_phy_detach
85 : };
86 :
87 : struct cfdriver nsphyter_cd = {
88 : NULL, "nsphyter", DV_DULL
89 : };
90 :
91 : int nsphyter_service(struct mii_softc *, struct mii_data *, int);
92 : void nsphyter_status(struct mii_softc *);
93 :
94 : const struct mii_phy_funcs nsphyter_funcs = {
95 : nsphyter_service, nsphyter_status, mii_phy_reset,
96 : };
97 :
98 : static const struct mii_phydesc nsphyterphys[] = {
99 : { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815,
100 : MII_STR_NATSEMI_DP83815 },
101 : { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843,
102 : MII_STR_NATSEMI_DP83843 },
103 : { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847,
104 : MII_STR_NATSEMI_DP83847 },
105 :
106 : { 0, 0,
107 : NULL },
108 : };
109 :
110 : int
111 0 : nsphytermatch(struct device *parent, void *match, void *aux)
112 : {
113 0 : struct mii_attach_args *ma = aux;
114 :
115 0 : if (mii_phy_match(ma, nsphyterphys) != NULL)
116 0 : return (10);
117 :
118 0 : return (0);
119 0 : }
120 :
121 : void
122 0 : nsphyterattach(struct device *parent, struct device *self, void *aux)
123 : {
124 0 : struct mii_softc *sc = (struct mii_softc *)self;
125 0 : struct mii_attach_args *ma = aux;
126 0 : struct mii_data *mii = ma->mii_data;
127 : const struct mii_phydesc *mpd;
128 :
129 0 : mpd = mii_phy_match(ma, nsphyterphys);
130 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
131 :
132 0 : sc->mii_inst = mii->mii_instance;
133 0 : sc->mii_phy = ma->mii_phyno;
134 0 : sc->mii_funcs = &nsphyter_funcs;
135 0 : sc->mii_pdata = mii;
136 0 : sc->mii_flags = ma->mii_flags;
137 :
138 0 : PHY_RESET(sc);
139 :
140 0 : sc->mii_capabilities =
141 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
142 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
143 0 : mii_phy_add_media(sc);
144 0 : }
145 :
146 : int
147 0 : nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
148 : {
149 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
150 : int reg;
151 :
152 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
153 0 : return (ENXIO);
154 :
155 0 : switch (cmd) {
156 : case MII_POLLSTAT:
157 : /*
158 : * If we're not polling our PHY instance, just return.
159 : */
160 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
161 0 : return (0);
162 : break;
163 :
164 : case MII_MEDIACHG:
165 : /*
166 : * If the media indicates a different PHY instance,
167 : * isolate ourselves.
168 : */
169 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
170 0 : reg = PHY_READ(sc, MII_BMCR);
171 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
172 0 : return (0);
173 : }
174 :
175 : /*
176 : * If the interface is not up, don't do anything.
177 : */
178 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
179 : break;
180 :
181 0 : mii_phy_setmedia(sc);
182 0 : break;
183 :
184 : case MII_TICK:
185 : /*
186 : * If we're not currently selected, just return.
187 : */
188 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
189 0 : return (0);
190 :
191 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
192 0 : return (0);
193 : break;
194 :
195 : case MII_DOWN:
196 0 : mii_phy_down(sc);
197 0 : return (0);
198 : }
199 :
200 : /* Update the media status. */
201 0 : mii_phy_status(sc);
202 :
203 : /* Callback if something changed. */
204 0 : mii_phy_update(sc, cmd);
205 0 : return (0);
206 0 : }
207 :
208 : void
209 0 : nsphyter_status(struct mii_softc *sc)
210 : {
211 0 : struct mii_data *mii = sc->mii_pdata;
212 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
213 : int bmsr, bmcr, physts;
214 :
215 0 : mii->mii_media_status = IFM_AVALID;
216 0 : mii->mii_media_active = IFM_ETHER;
217 :
218 0 : bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
219 0 : physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
220 :
221 0 : if (physts & PHYSTS_LINK)
222 0 : mii->mii_media_status |= IFM_ACTIVE;
223 :
224 0 : bmcr = PHY_READ(sc, MII_BMCR);
225 0 : if (bmcr & BMCR_ISO) {
226 0 : mii->mii_media_active |= IFM_NONE;
227 0 : mii->mii_media_status = 0;
228 0 : return;
229 : }
230 :
231 0 : if (bmcr & BMCR_LOOP)
232 0 : mii->mii_media_active |= IFM_LOOP;
233 :
234 0 : if (bmcr & BMCR_AUTOEN) {
235 : /*
236 : * The media status bits are only valid if autonegotiation
237 : * has completed (or it's disabled).
238 : */
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 : if (physts & PHYSTS_SPEED10)
246 0 : mii->mii_media_active |= IFM_10_T;
247 : else
248 0 : mii->mii_media_active |= IFM_100_TX;
249 :
250 0 : if (physts & PHYSTS_DUPLEX)
251 0 : mii->mii_media_active |= IFM_FDX;
252 : else
253 0 : mii->mii_media_active |= IFM_HDX;
254 : } else
255 0 : mii->mii_media_active = ife->ifm_media;
256 0 : }
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