1 /* $OpenBSD: bmtphy.c,v 1.14 2005/05/25 20:05:44 brad Exp $ */
2 /* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */
3
4 /*-
5 * Copyright (c) 2001 Theo de Raadt
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 /*
30 * Driver for Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also
31 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in
32 * the 3c905C data sheet.
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/device.h>
39 #include <sys/socket.h>
40 #include <sys/errno.h>
41
42 #include <net/if.h>
43 #include <net/if_media.h>
44
45 #include <dev/mii/mii.h>
46 #include <dev/mii/miivar.h>
47 #include <dev/mii/miidevs.h>
48
49 #include <dev/mii/bmtphyreg.h>
50
51 int bmtphymatch(struct device *, void *, void *);
52 void bmtphyattach(struct device *, struct device *, void *);
53
54 struct cfattach bmtphy_ca = {
55 sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach,
56 mii_phy_activate
57 };
58
59 struct cfdriver bmtphy_cd = {
60 NULL, "bmtphy", DV_DULL
61 };
62
63 int bmtphy_service(struct mii_softc *, struct mii_data *, int);
64 void bmtphy_status(struct mii_softc *);
65
66 const struct mii_phy_funcs bmtphy_funcs = {
67 bmtphy_service, bmtphy_status, mii_phy_reset,
68 };
69
70 static const struct mii_phydesc bmtphys[] = {
71 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B,
72 MII_STR_BROADCOM_3C905B },
73 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C,
74 MII_STR_BROADCOM_3C905C },
75 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401,
76 MII_STR_BROADCOM_BCM4401 },
77 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201,
78 MII_STR_BROADCOM_BCM5201 },
79 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214,
80 MII_STR_BROADCOM_BCM5214 },
81 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220,
82 MII_STR_BROADCOM_BCM5220 },
83 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221,
84 MII_STR_BROADCOM_BCM5221 },
85 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222,
86 MII_STR_BROADCOM_BCM5222 },
87
88 { 0, 0,
89 NULL },
90 };
91
92 int
bmtphymatch(struct device * parent,void * match,void * aux)93 bmtphymatch(struct device *parent, void *match, void *aux)
94 {
95 struct mii_attach_args *ma = aux;
96
97 if (mii_phy_match(ma, bmtphys) != NULL)
98 return (10);
99
100 return (0);
101 }
102
103 void
bmtphyattach(struct device * parent,struct device * self,void * aux)104 bmtphyattach(struct device *parent, struct device *self, void *aux)
105 {
106 struct mii_softc *sc = (struct mii_softc *)self;
107 struct mii_attach_args *ma = aux;
108 struct mii_data *mii = ma->mii_data;
109 const struct mii_phydesc *mpd;
110
111 mpd = mii_phy_match(ma, bmtphys);
112 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
113
114 sc->mii_inst = mii->mii_instance;
115 sc->mii_phy = ma->mii_phyno;
116 sc->mii_funcs = &bmtphy_funcs;
117 sc->mii_pdata = mii;
118 sc->mii_flags = ma->mii_flags;
119 sc->mii_anegticks = MII_ANEGTICKS;
120
121 PHY_RESET(sc);
122
123 /*
124 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER?
125 */
126
127 sc->mii_capabilities =
128 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
129 if (sc->mii_capabilities & BMSR_MEDIAMASK)
130 mii_phy_add_media(sc);
131 }
132
133 int
bmtphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)134 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
135 {
136 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
137 int reg;
138
139 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
140 return (ENXIO);
141
142 switch (cmd) {
143 case MII_POLLSTAT:
144 /*
145 * If we're not polling our PHY instance, just return.
146 */
147 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
148 return (0);
149 break;
150
151 case MII_MEDIACHG:
152 /*
153 * If the media indicates a different PHY instance,
154 * isolate ourselves.
155 */
156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
157 reg = PHY_READ(sc, MII_BMCR);
158 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
159 return (0);
160 }
161
162 /*
163 * If the interface is not up, don't do anything.
164 */
165 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
166 break;
167
168 mii_phy_setmedia(sc);
169 break;
170
171 case MII_TICK:
172 /*
173 * If we're not currently selected, just return.
174 */
175 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
176 return (0);
177
178 if (mii_phy_tick(sc) == EJUSTRETURN)
179 return (0);
180 break;
181
182 case MII_DOWN:
183 mii_phy_down(sc);
184 return (0);
185 }
186
187 /* Update the media status. */
188 mii_phy_status(sc);
189
190 /* Callback if something changed. */
191 mii_phy_update(sc, cmd);
192 return (0);
193 }
194
195 void
bmtphy_status(struct mii_softc * sc)196 bmtphy_status(struct mii_softc *sc)
197 {
198 struct mii_data *mii = sc->mii_pdata;
199 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
200 int bmsr, bmcr, aux_csr;
201
202 mii->mii_media_status = IFM_AVALID;
203 mii->mii_media_active = IFM_ETHER;
204
205 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
206 if (bmsr & BMSR_LINK)
207 mii->mii_media_status |= IFM_ACTIVE;
208
209 bmcr = PHY_READ(sc, MII_BMCR);
210 if (bmcr & BMCR_ISO) {
211 mii->mii_media_active |= IFM_NONE;
212 mii->mii_media_status = 0;
213 return;
214 }
215
216 if (bmcr & BMCR_LOOP)
217 mii->mii_media_active |= IFM_LOOP;
218
219 if (bmcr & BMCR_AUTOEN) {
220 /*
221 * The later are only valid if autonegotiation
222 * has completed (or it's disabled).
223 */
224 if ((bmsr & BMSR_ACOMP) == 0) {
225 /* Erg, still trying, I guess... */
226 mii->mii_media_active |= IFM_NONE;
227 return;
228 }
229
230 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
231 if (aux_csr & AUX_CSR_SPEED)
232 mii->mii_media_active |= IFM_100_TX;
233 else
234 mii->mii_media_active |= IFM_10_T;
235 if (aux_csr & AUX_CSR_FDX)
236 mii->mii_media_active |= IFM_FDX;
237
238 } else
239 mii->mii_media_active = ife->ifm_media;
240 }
241