Line data Source code
1 : /* $OpenBSD: bmtphy.c,v 1.20 2015/03/14 03:38:47 jsg 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/device.h>
38 : #include <sys/socket.h>
39 : #include <sys/errno.h>
40 :
41 : #include <net/if.h>
42 : #include <net/if_var.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 : };
57 :
58 : struct cfdriver bmtphy_cd = {
59 : NULL, "bmtphy", DV_DULL
60 : };
61 :
62 : int bmtphy_service(struct mii_softc *, struct mii_data *, int);
63 : void bmtphy_status(struct mii_softc *);
64 : void bmtphy_reset(struct mii_softc *);
65 :
66 : const struct mii_phy_funcs bmtphy_funcs = {
67 : bmtphy_service, bmtphy_status, bmtphy_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
93 0 : bmtphymatch(struct device *parent, void *match, void *aux)
94 : {
95 0 : struct mii_attach_args *ma = aux;
96 :
97 0 : if (mii_phy_match(ma, bmtphys) != NULL)
98 0 : return (10);
99 :
100 0 : return (0);
101 0 : }
102 :
103 : void
104 0 : bmtphyattach(struct device *parent, struct device *self, void *aux)
105 : {
106 0 : struct mii_softc *sc = (struct mii_softc *)self;
107 0 : struct mii_attach_args *ma = aux;
108 0 : struct mii_data *mii = ma->mii_data;
109 : const struct mii_phydesc *mpd;
110 :
111 0 : mpd = mii_phy_match(ma, bmtphys);
112 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
113 :
114 0 : sc->mii_model = MII_MODEL(ma->mii_id2);
115 0 : sc->mii_inst = mii->mii_instance;
116 0 : sc->mii_phy = ma->mii_phyno;
117 0 : sc->mii_funcs = &bmtphy_funcs;
118 0 : sc->mii_pdata = mii;
119 0 : sc->mii_flags = ma->mii_flags;
120 0 : sc->mii_anegticks = MII_ANEGTICKS;
121 :
122 0 : PHY_RESET(sc);
123 :
124 : /*
125 : * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER?
126 : */
127 :
128 0 : sc->mii_capabilities =
129 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
130 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
131 0 : mii_phy_add_media(sc);
132 0 : }
133 :
134 : int
135 0 : bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
136 : {
137 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
138 : int reg;
139 :
140 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
141 0 : return (ENXIO);
142 :
143 0 : switch (cmd) {
144 : case MII_POLLSTAT:
145 : /*
146 : * If we're not polling our PHY instance, just return.
147 : */
148 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
149 0 : return (0);
150 : break;
151 :
152 : case MII_MEDIACHG:
153 : /*
154 : * If the media indicates a different PHY instance,
155 : * isolate ourselves.
156 : */
157 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
158 0 : reg = PHY_READ(sc, MII_BMCR);
159 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
160 0 : return (0);
161 : }
162 :
163 : /*
164 : * If the interface is not up, don't do anything.
165 : */
166 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
167 : break;
168 :
169 0 : mii_phy_setmedia(sc);
170 0 : break;
171 :
172 : case MII_TICK:
173 : /*
174 : * If we're not currently selected, just return.
175 : */
176 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
177 0 : return (0);
178 :
179 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
180 0 : return (0);
181 : break;
182 :
183 : case MII_DOWN:
184 0 : mii_phy_down(sc);
185 0 : return (0);
186 : }
187 :
188 : /* Update the media status. */
189 0 : mii_phy_status(sc);
190 :
191 : /* Callback if something changed. */
192 0 : mii_phy_update(sc, cmd);
193 0 : return (0);
194 0 : }
195 :
196 : void
197 0 : bmtphy_status(struct mii_softc *sc)
198 : {
199 0 : struct mii_data *mii = sc->mii_pdata;
200 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
201 : int bmsr, bmcr, aux_csr;
202 :
203 0 : mii->mii_media_status = IFM_AVALID;
204 0 : mii->mii_media_active = IFM_ETHER;
205 :
206 0 : bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
207 0 : if (bmsr & BMSR_LINK)
208 0 : mii->mii_media_status |= IFM_ACTIVE;
209 :
210 0 : bmcr = PHY_READ(sc, MII_BMCR);
211 0 : if (bmcr & BMCR_ISO) {
212 0 : mii->mii_media_active |= IFM_NONE;
213 0 : mii->mii_media_status = 0;
214 0 : return;
215 : }
216 :
217 0 : if (bmcr & BMCR_LOOP)
218 0 : mii->mii_media_active |= IFM_LOOP;
219 :
220 0 : if (bmcr & BMCR_AUTOEN) {
221 : /*
222 : * The later are only valid if autonegotiation
223 : * has completed (or it's disabled).
224 : */
225 0 : if ((bmsr & BMSR_ACOMP) == 0) {
226 : /* Erg, still trying, I guess... */
227 0 : mii->mii_media_active |= IFM_NONE;
228 0 : return;
229 : }
230 :
231 0 : aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
232 0 : if (aux_csr & AUX_CSR_SPEED)
233 0 : mii->mii_media_active |= IFM_100_TX;
234 : else
235 0 : mii->mii_media_active |= IFM_10_T;
236 :
237 0 : if (aux_csr & AUX_CSR_FDX)
238 0 : mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX;
239 : else
240 0 : mii->mii_media_active |= IFM_HDX;
241 : } else
242 0 : mii->mii_media_active = ife->ifm_media;
243 0 : }
244 :
245 : void
246 0 : bmtphy_reset(struct mii_softc *sc)
247 : {
248 : u_int16_t data;
249 :
250 0 : mii_phy_reset(sc);
251 :
252 0 : if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) {
253 : /* Enable shadow register mode */
254 0 : data = PHY_READ(sc, 0x1f);
255 0 : PHY_WRITE(sc, 0x1f, data | 0x0080);
256 :
257 : /* Enable APD (Auto PowerDetect) */
258 0 : data = PHY_READ(sc, MII_BMTPHY_AUX2);
259 0 : PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
260 :
261 : /* Enable clocks across APD for
262 : * Auto-MDIX functionality */
263 0 : data = PHY_READ(sc, MII_BMTPHY_INTR);
264 0 : PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
265 :
266 : /* Disable shadow register mode */
267 0 : data = PHY_READ(sc, 0x1f);
268 0 : PHY_WRITE(sc, 0x1f, data & ~0x0080);
269 0 : }
270 0 : }
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