1 | /* $NetBSD: bmtphy.c,v 1.32 2016/07/07 06:55:41 msaitoh Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, |
9 | * NASA Ames Research Center. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions and the following disclaimer. |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in the |
18 | * documentation and/or other materials provided with the distribution. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
30 | * POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | /* |
34 | * Copyright (c) 1997 Manuel Bouyer. All rights reserved. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * 1. Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * 2. Redistributions in binary form must reproduce the above copyright |
42 | * notice, this list of conditions and the following disclaimer in the |
43 | * documentation and/or other materials provided with the distribution. |
44 | * |
45 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
46 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
47 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
48 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
49 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
50 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
51 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
52 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
53 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
54 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
55 | */ |
56 | |
57 | /* |
58 | * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also |
59 | * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in |
60 | * the 3c905C data sheet. |
61 | */ |
62 | |
63 | #include <sys/cdefs.h> |
64 | __KERNEL_RCSID(0, "$NetBSD: bmtphy.c,v 1.32 2016/07/07 06:55:41 msaitoh Exp $" ); |
65 | |
66 | #include <sys/param.h> |
67 | #include <sys/systm.h> |
68 | #include <sys/kernel.h> |
69 | #include <sys/device.h> |
70 | #include <sys/socket.h> |
71 | #include <sys/errno.h> |
72 | |
73 | #include <net/if.h> |
74 | #include <net/if_media.h> |
75 | |
76 | #include <dev/mii/mii.h> |
77 | #include <dev/mii/miivar.h> |
78 | #include <dev/mii/miidevs.h> |
79 | |
80 | #include <dev/mii/bmtphyreg.h> |
81 | |
82 | static int bmtphymatch(device_t, cfdata_t, void *); |
83 | static void bmtphyattach(device_t, device_t, void *); |
84 | |
85 | CFATTACH_DECL_NEW(bmtphy, sizeof(struct mii_softc), |
86 | bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate); |
87 | |
88 | static int bmtphy_service(struct mii_softc *, struct mii_data *, int); |
89 | static void bmtphy_status(struct mii_softc *); |
90 | static void bmtphy_reset(struct mii_softc *); |
91 | |
92 | static const struct mii_phy_funcs bmtphy_funcs = { |
93 | bmtphy_service, bmtphy_status, bmtphy_reset, |
94 | }; |
95 | |
96 | static const struct mii_phydesc bmtphys[] = { |
97 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905B, |
98 | MII_STR_xxBROADCOM_3C905B }, |
99 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905C, |
100 | MII_STR_xxBROADCOM_3C905C }, |
101 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5201, |
102 | MII_STR_xxBROADCOM_BCM5201 }, |
103 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5214, |
104 | MII_STR_xxBROADCOM_BCM5214 }, |
105 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5221, |
106 | MII_STR_xxBROADCOM_BCM5221 }, |
107 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5222, |
108 | MII_STR_xxBROADCOM_BCM5222 }, |
109 | { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM4401, |
110 | MII_STR_xxBROADCOM_BCM4401 }, |
111 | |
112 | { 0, 0, |
113 | NULL }, |
114 | }; |
115 | |
116 | static int |
117 | bmtphymatch(device_t parent, cfdata_t match, void *aux) |
118 | { |
119 | struct mii_attach_args *ma = aux; |
120 | |
121 | if (mii_phy_match(ma, bmtphys) != NULL) |
122 | return (10); |
123 | |
124 | return (0); |
125 | } |
126 | |
127 | static void |
128 | bmtphyattach(device_t parent, device_t self, void *aux) |
129 | { |
130 | struct mii_softc *sc = device_private(self); |
131 | struct mii_attach_args *ma = aux; |
132 | struct mii_data *mii = ma->mii_data; |
133 | const struct mii_phydesc *mpd; |
134 | |
135 | mpd = mii_phy_match(ma, bmtphys); |
136 | aprint_naive(": Media interface\n" ); |
137 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
138 | |
139 | sc->mii_dev = self; |
140 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
141 | sc->mii_inst = mii->mii_instance; |
142 | sc->mii_phy = ma->mii_phyno; |
143 | sc->mii_funcs = &bmtphy_funcs; |
144 | sc->mii_pdata = mii; |
145 | sc->mii_flags = ma->mii_flags; |
146 | sc->mii_anegticks = MII_ANEGTICKS; |
147 | |
148 | PHY_RESET(sc); |
149 | |
150 | /* |
151 | * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? |
152 | */ |
153 | |
154 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
155 | aprint_normal_dev(self, "" ); |
156 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
157 | aprint_error("no media present" ); |
158 | else |
159 | mii_phy_add_media(sc); |
160 | aprint_normal("\n" ); |
161 | } |
162 | |
163 | static int |
164 | bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
165 | { |
166 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
167 | int reg; |
168 | |
169 | switch (cmd) { |
170 | case MII_POLLSTAT: |
171 | /* |
172 | * If we're not polling our PHY instance, just return. |
173 | */ |
174 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
175 | return (0); |
176 | break; |
177 | |
178 | case MII_MEDIACHG: |
179 | /* |
180 | * If the media indicates a different PHY instance, |
181 | * isolate ourselves. |
182 | */ |
183 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
184 | reg = PHY_READ(sc, MII_BMCR); |
185 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
186 | return (0); |
187 | } |
188 | |
189 | /* |
190 | * If the interface is not up, don't do anything. |
191 | */ |
192 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
193 | break; |
194 | |
195 | mii_phy_setmedia(sc); |
196 | break; |
197 | |
198 | case MII_TICK: |
199 | /* |
200 | * If we're not currently selected, just return. |
201 | */ |
202 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
203 | return (0); |
204 | |
205 | if (mii_phy_tick(sc) == EJUSTRETURN) |
206 | return (0); |
207 | break; |
208 | |
209 | case MII_DOWN: |
210 | mii_phy_down(sc); |
211 | return (0); |
212 | } |
213 | |
214 | /* Update the media status. */ |
215 | mii_phy_status(sc); |
216 | |
217 | /* Callback if something changed. */ |
218 | mii_phy_update(sc, cmd); |
219 | return (0); |
220 | } |
221 | |
222 | static void |
223 | bmtphy_status(struct mii_softc *sc) |
224 | { |
225 | struct mii_data *mii = sc->mii_pdata; |
226 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
227 | int bmsr, bmcr, aux_csr; |
228 | |
229 | mii->mii_media_status = IFM_AVALID; |
230 | mii->mii_media_active = IFM_ETHER; |
231 | |
232 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
233 | |
234 | if (bmsr & BMSR_LINK) |
235 | mii->mii_media_status |= IFM_ACTIVE; |
236 | |
237 | bmcr = PHY_READ(sc, MII_BMCR); |
238 | if (bmcr & BMCR_ISO) { |
239 | mii->mii_media_active |= IFM_NONE; |
240 | mii->mii_media_status = 0; |
241 | return; |
242 | } |
243 | |
244 | if (bmcr & BMCR_LOOP) |
245 | mii->mii_media_active |= IFM_LOOP; |
246 | |
247 | if (bmcr & BMCR_AUTOEN) { |
248 | /* |
249 | * The media status bits are only valid if autonegotiation |
250 | * has completed (or it's disabled). |
251 | */ |
252 | if ((bmsr & BMSR_ACOMP) == 0) { |
253 | /* Erg, still trying, I guess... */ |
254 | mii->mii_media_active |= IFM_NONE; |
255 | return; |
256 | } |
257 | |
258 | aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); |
259 | if (aux_csr & AUX_CSR_SPEED) |
260 | mii->mii_media_active |= IFM_100_TX; |
261 | else |
262 | mii->mii_media_active |= IFM_10_T; |
263 | if (aux_csr & AUX_CSR_FDX) |
264 | mii->mii_media_active |= IFM_FDX; |
265 | else |
266 | mii->mii_media_active |= IFM_HDX; |
267 | |
268 | if (mii->mii_media_active & IFM_FDX) |
269 | mii->mii_media_active |= mii_phy_flowstatus(sc); |
270 | } else |
271 | mii->mii_media_active = ife->ifm_media; |
272 | } |
273 | |
274 | static void |
275 | bmtphy_reset(struct mii_softc *sc) |
276 | { |
277 | u_int16_t data; |
278 | |
279 | mii_phy_reset(sc); |
280 | |
281 | if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { |
282 | /* Enable shadow register mode */ |
283 | data = PHY_READ(sc, 0x1f); |
284 | PHY_WRITE(sc, 0x1f, data | 0x0080); |
285 | |
286 | /* Enable APD (Auto PowerDetect) */ |
287 | data = PHY_READ(sc, MII_BMTPHY_AUX2); |
288 | PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); |
289 | |
290 | /* Enable clocks across APD for Auto-MDIX functionality */ |
291 | data = PHY_READ(sc, MII_BMTPHY_INTR); |
292 | PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); |
293 | |
294 | /* Disable shadow register mode */ |
295 | data = PHY_READ(sc, 0x1f); |
296 | PHY_WRITE(sc, 0x1f, data & ~0x0080); |
297 | } |
298 | } |
299 | |