1 /* $OpenBSD: sqphy.c,v 1.22 2022/04/06 18:59:29 naddy 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 const 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
sqphymatch(struct device * parent,void * match,void * aux)109 sqphymatch(struct device *parent, void *match, void *aux)
110 {
111 struct mii_attach_args *ma = aux;
112
113 if (mii_phy_match(ma, sqphys) != NULL)
114 return (10);
115
116 return (0);
117 }
118
119 void
sqphyattach(struct device * parent,struct device * self,void * aux)120 sqphyattach(struct device *parent, struct device *self, void *aux)
121 {
122 struct mii_softc *sc = (struct mii_softc *)self;
123 struct mii_attach_args *ma = aux;
124 struct mii_data *mii = ma->mii_data;
125 const struct mii_phydesc *mpd;
126
127 mpd = mii_phy_match(ma, sqphys);
128 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
129
130 sc->mii_inst = mii->mii_instance;
131 sc->mii_phy = ma->mii_phyno;
132 sc->mii_funcs = &sqphy_funcs;
133 sc->mii_pdata = mii;
134 sc->mii_flags = ma->mii_flags;
135
136 PHY_RESET(sc);
137
138 sc->mii_capabilities =
139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
140 if (sc->mii_capabilities & BMSR_MEDIAMASK)
141 mii_phy_add_media(sc);
142 }
143
144 int
sqphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)145 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
146 {
147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
148 int reg;
149
150 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
151 return (ENXIO);
152
153 switch (cmd) {
154 case MII_POLLSTAT:
155 /*
156 * If we're not polling our PHY instance, just return.
157 */
158 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
159 return (0);
160 break;
161
162 case MII_MEDIACHG:
163 /*
164 * If the media indicates a different PHY instance,
165 * isolate ourselves.
166 */
167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
168 reg = PHY_READ(sc, MII_BMCR);
169 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
170 return (0);
171 }
172
173 /*
174 * If the interface is not up, don't do anything.
175 */
176 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
177 break;
178
179 mii_phy_setmedia(sc);
180 break;
181
182 case MII_TICK:
183 /*
184 * If we're not currently selected, just return.
185 */
186 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
187 return (0);
188
189 if (mii_phy_tick(sc) == EJUSTRETURN)
190 return (0);
191 break;
192
193 case MII_DOWN:
194 mii_phy_down(sc);
195 return (0);
196 }
197
198 /* Update the media status. */
199 mii_phy_status(sc);
200
201 /* Callback if something changed. */
202 mii_phy_update(sc, cmd);
203 return (0);
204 }
205
206 void
sqphy_status(struct mii_softc * sc)207 sqphy_status(struct mii_softc *sc)
208 {
209 struct mii_data *mii = sc->mii_pdata;
210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
211 int bmsr, bmcr, status;
212
213 mii->mii_media_status = IFM_AVALID;
214 mii->mii_media_active = IFM_ETHER;
215
216 bmsr = PHY_READ(sc, MII_BMSR) |
217 PHY_READ(sc, MII_BMSR);
218 if (bmsr & BMSR_LINK)
219 mii->mii_media_status |= IFM_ACTIVE;
220
221 bmcr = PHY_READ(sc, MII_BMCR);
222 if (bmcr & BMCR_ISO) {
223 mii->mii_media_active |= IFM_NONE;
224 mii->mii_media_status = 0;
225 return;
226 }
227
228 if (bmcr & BMCR_LOOP)
229 mii->mii_media_active |= IFM_LOOP;
230
231 if (bmcr & BMCR_AUTOEN) {
232 if ((bmsr & BMSR_ACOMP) == 0) {
233 /* Erg, still trying, I guess... */
234 mii->mii_media_active |= IFM_NONE;
235 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 status = PHY_READ(sc, MII_SQPHY_STATUS);
243 if (status & STATUS_SPD_DET)
244 mii->mii_media_active |= IFM_100_TX;
245 else
246 mii->mii_media_active |= IFM_10_T;
247
248 if (status & STATUS_DPLX_DET)
249 mii->mii_media_active |= IFM_FDX;
250 else
251 mii->mii_media_active |= IFM_HDX;
252 } else
253 mii->mii_media_active = ife->ifm_media;
254 }
255