1 /* $OpenBSD: nsphyter.c,v 1.20 2022/04/06 18:59:29 naddy 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 const 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
nsphytermatch(struct device * parent,void * match,void * aux)111 nsphytermatch(struct device *parent, void *match, void *aux)
112 {
113 struct mii_attach_args *ma = aux;
114
115 if (mii_phy_match(ma, nsphyterphys) != NULL)
116 return (10);
117
118 return (0);
119 }
120
121 void
nsphyterattach(struct device * parent,struct device * self,void * aux)122 nsphyterattach(struct device *parent, struct device *self, void *aux)
123 {
124 struct mii_softc *sc = (struct mii_softc *)self;
125 struct mii_attach_args *ma = aux;
126 struct mii_data *mii = ma->mii_data;
127 const struct mii_phydesc *mpd;
128
129 mpd = mii_phy_match(ma, nsphyterphys);
130 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
131
132 sc->mii_inst = mii->mii_instance;
133 sc->mii_phy = ma->mii_phyno;
134 sc->mii_funcs = &nsphyter_funcs;
135 sc->mii_pdata = mii;
136 sc->mii_flags = ma->mii_flags;
137
138 PHY_RESET(sc);
139
140 sc->mii_capabilities =
141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
142 if (sc->mii_capabilities & BMSR_MEDIAMASK)
143 mii_phy_add_media(sc);
144 }
145
146 int
nsphyter_service(struct mii_softc * sc,struct mii_data * mii,int cmd)147 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
148 {
149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
150 int reg;
151
152 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
153 return (ENXIO);
154
155 switch (cmd) {
156 case MII_POLLSTAT:
157 /*
158 * If we're not polling our PHY instance, just return.
159 */
160 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
161 return (0);
162 break;
163
164 case MII_MEDIACHG:
165 /*
166 * If the media indicates a different PHY instance,
167 * isolate ourselves.
168 */
169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
170 reg = PHY_READ(sc, MII_BMCR);
171 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
172 return (0);
173 }
174
175 /*
176 * If the interface is not up, don't do anything.
177 */
178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
179 break;
180
181 mii_phy_setmedia(sc);
182 break;
183
184 case MII_TICK:
185 /*
186 * If we're not currently selected, just return.
187 */
188 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
189 return (0);
190
191 if (mii_phy_tick(sc) == EJUSTRETURN)
192 return (0);
193 break;
194
195 case MII_DOWN:
196 mii_phy_down(sc);
197 return (0);
198 }
199
200 /* Update the media status. */
201 mii_phy_status(sc);
202
203 /* Callback if something changed. */
204 mii_phy_update(sc, cmd);
205 return (0);
206 }
207
208 void
nsphyter_status(struct mii_softc * sc)209 nsphyter_status(struct mii_softc *sc)
210 {
211 struct mii_data *mii = sc->mii_pdata;
212 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
213 int bmsr, bmcr, physts;
214
215 mii->mii_media_status = IFM_AVALID;
216 mii->mii_media_active = IFM_ETHER;
217
218 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
219 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
220
221 if (physts & PHYSTS_LINK)
222 mii->mii_media_status |= IFM_ACTIVE;
223
224 bmcr = PHY_READ(sc, MII_BMCR);
225 if (bmcr & BMCR_ISO) {
226 mii->mii_media_active |= IFM_NONE;
227 mii->mii_media_status = 0;
228 return;
229 }
230
231 if (bmcr & BMCR_LOOP)
232 mii->mii_media_active |= IFM_LOOP;
233
234 if (bmcr & BMCR_AUTOEN) {
235 /*
236 * The media status bits are only valid if autonegotiation
237 * has completed (or it's disabled).
238 */
239 if ((bmsr & BMSR_ACOMP) == 0) {
240 /* Erg, still trying, I guess... */
241 mii->mii_media_active |= IFM_NONE;
242 return;
243 }
244
245 if (physts & PHYSTS_SPEED10)
246 mii->mii_media_active |= IFM_10_T;
247 else
248 mii->mii_media_active |= IFM_100_TX;
249
250 if (physts & PHYSTS_DUPLEX)
251 mii->mii_media_active |= IFM_FDX;
252 else
253 mii->mii_media_active |= IFM_HDX;
254 } else
255 mii->mii_media_active = ife->ifm_media;
256 }
257