1 /* $OpenBSD: iophy.c,v 1.22 2022/04/06 18:59:29 naddy Exp $ */
2 /* $NetBSD: iophy.c,v 1.8 2000/02/02 23:34:56 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 * Intel 82553 PHY driver
60 */
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/device.h>
65 #include <sys/socket.h>
66
67 #include <net/if.h>
68 #include <net/if_var.h>
69 #include <net/if_media.h>
70
71 #include <dev/mii/mii.h>
72 #include <dev/mii/miivar.h>
73 #include <dev/mii/miidevs.h>
74
75 #include <dev/mii/iophyreg.h>
76
77 int iophymatch(struct device *, void *, void *);
78 void iophyattach(struct device *, struct device *, void *);
79
80 const struct cfattach iophy_ca = {
81 sizeof(struct mii_softc), iophymatch, iophyattach, mii_phy_detach
82 };
83
84 struct cfdriver iophy_cd = {
85 NULL, "iophy", DV_DULL
86 };
87
88 int iophy_service(struct mii_softc *, struct mii_data *, int);
89 void iophy_status(struct mii_softc *);
90
91 const struct mii_phy_funcs iophy_funcs = {
92 iophy_service, iophy_status, mii_phy_reset,
93 };
94
95 static const struct mii_phydesc iophys[] = {
96 { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553,
97 MII_STR_xxINTEL_I82553 },
98 { MII_OUI_INTEL, MII_MODEL_INTEL_I82553,
99 MII_STR_INTEL_I82553 },
100
101 { 0, 0,
102 NULL },
103
104 };
105
106 int
iophymatch(struct device * parent,void * match,void * aux)107 iophymatch(struct device *parent, void *match, void *aux)
108 {
109 struct mii_attach_args *ma = aux;
110
111 if (mii_phy_match(ma, iophys) != NULL)
112 return (10);
113
114 return (0);
115 }
116
117 void
iophyattach(struct device * parent,struct device * self,void * aux)118 iophyattach(struct device *parent, struct device *self, void *aux)
119 {
120 struct mii_softc *sc = (struct mii_softc *)self;
121 struct mii_attach_args *ma = aux;
122 struct mii_data *mii = ma->mii_data;
123 const struct mii_phydesc *mpd;
124
125 mpd = mii_phy_match(ma, iophys);
126 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
127
128 sc->mii_inst = mii->mii_instance;
129 sc->mii_phy = ma->mii_phyno;
130 sc->mii_funcs = &iophy_funcs;
131 sc->mii_pdata = mii;
132 sc->mii_flags = ma->mii_flags;
133
134 PHY_RESET(sc);
135
136 sc->mii_capabilities =
137 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
138 if (sc->mii_capabilities & BMSR_MEDIAMASK)
139 mii_phy_add_media(sc);
140 }
141
142 int
iophy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)143 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
144 {
145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
146 int reg;
147
148 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
149 return (ENXIO);
150
151 switch (cmd) {
152 case MII_POLLSTAT:
153 /*
154 * If we're not polling our PHY instance, just return.
155 */
156 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
157 return (0);
158 break;
159
160 case MII_MEDIACHG:
161 /*
162 * If the media indicates a different PHY instance,
163 * isolate ourselves.
164 */
165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
166 reg = PHY_READ(sc, MII_BMCR);
167 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
168 return (0);
169 }
170
171 /*
172 * If the interface is not up, don't do anything.
173 */
174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
175 break;
176
177 mii_phy_setmedia(sc);
178 break;
179
180 case MII_TICK:
181 /*
182 * If we're not currently selected, just return.
183 */
184 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
185 return (0);
186
187 if (mii_phy_tick(sc) == EJUSTRETURN)
188 return (0);
189 break;
190
191 case MII_DOWN:
192 mii_phy_down(sc);
193 return (0);
194 }
195
196 /* Update the media status. */
197 mii_phy_status(sc);
198
199 /* Callback if something changed. */
200 mii_phy_update(sc, cmd);
201 return (0);
202 }
203
204 void
iophy_status(struct mii_softc * sc)205 iophy_status(struct mii_softc *sc)
206 {
207 struct mii_data *mii = sc->mii_pdata;
208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
209 int bmsr, bmcr, ext0;
210
211 mii->mii_media_status = IFM_AVALID;
212 mii->mii_media_active = IFM_ETHER;
213
214 bmsr = PHY_READ(sc, MII_BMSR) |
215 PHY_READ(sc, MII_BMSR);
216 if (bmsr & BMSR_LINK)
217 mii->mii_media_status |= IFM_ACTIVE;
218
219 bmcr = PHY_READ(sc, MII_BMCR);
220 if (bmcr & BMCR_ISO) {
221 mii->mii_media_active |= IFM_NONE;
222 mii->mii_media_status = 0;
223 return;
224 }
225
226 if (bmcr & BMCR_LOOP)
227 mii->mii_media_active |= IFM_LOOP;
228
229 if (bmcr & BMCR_AUTOEN) {
230 if ((bmsr & BMSR_ACOMP) == 0) {
231 /* Erg, still trying, I guess... */
232 mii->mii_media_active |= IFM_NONE;
233 return;
234 }
235
236 ext0 = PHY_READ(sc, MII_IOPHY_EXT0);
237 if (ext0 & EXT0_SPEED) {
238 if (bmsr & BMSR_100TXFDX ||
239 bmsr & BMSR_100TXHDX)
240 mii->mii_media_active |= IFM_100_TX;
241 else
242 mii->mii_media_active |= IFM_100_T4;
243 } else
244 mii->mii_media_active |= IFM_10_T;
245
246 if (ext0 & EXT0_DUPLEX)
247 mii->mii_media_active |= IFM_FDX;
248 else
249 mii->mii_media_active |= IFM_HDX;
250 } else
251 mii->mii_media_active = ife->ifm_media;
252 }
253