1 /* $NetBSD: makphy.c,v 1.41 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 Marvell 88E1000 ``Alaska'' 10/100/1000 PHY.
59 */
60
61 #include <sys/cdefs.h>
62 __KERNEL_RCSID(0, "$NetBSD: makphy.c,v 1.41 2016/07/07 06:55:41 msaitoh Exp $");
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/device.h>
68 #include <sys/socket.h>
69 #include <sys/errno.h>
70
71 #include <net/if.h>
72 #include <net/if_media.h>
73
74 #include <dev/mii/mii.h>
75 #include <dev/mii/miivar.h>
76 #include <dev/mii/miidevs.h>
77
78 #include <dev/mii/makphyreg.h>
79
80 static int makphymatch(device_t, cfdata_t, void *);
81 static void makphyattach(device_t, device_t, void *);
82
83 CFATTACH_DECL_NEW(makphy, sizeof(struct mii_softc),
84 makphymatch, makphyattach, mii_phy_detach, mii_phy_activate);
85
86 static int makphy_service(struct mii_softc *, struct mii_data *, int);
87 static void makphy_status(struct mii_softc *);
88 static void makphy_reset(struct mii_softc *);
89
90 static const struct mii_phy_funcs makphy_funcs = {
91 makphy_service, makphy_status, makphy_reset,
92 };
93
94 static const struct mii_phydesc makphys[] = {
95 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1000_3,
96 MII_STR_xxMARVELL_E1000_3 },
97
98 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1000_5,
99 MII_STR_xxMARVELL_E1000_5 },
100
101 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1011,
102 MII_STR_xxMARVELL_E1011 },
103
104 /* XXX: reported not to work on eg. HP XW9400 */
105 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1149,
106 MII_STR_xxMARVELL_E1149 },
107
108 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1149R,
109 MII_STR_xxMARVELL_E1149R },
110
111 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1111,
112 MII_STR_xxMARVELL_E1111 },
113
114 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1116,
115 MII_STR_xxMARVELL_E1116 },
116
117 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1145,
118 MII_STR_xxMARVELL_E1145 },
119
120 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1116R,
121 MII_STR_xxMARVELL_E1116R },
122
123 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1116R_29,
124 MII_STR_xxMARVELL_E1116R_29 },
125
126 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1543,
127 MII_STR_xxMARVELL_E1543 },
128
129 { 0, 0,
130 NULL },
131 };
132
133 static int
makphymatch(device_t parent,cfdata_t match,void * aux)134 makphymatch(device_t parent, cfdata_t match, void *aux)
135 {
136 struct mii_attach_args *ma = aux;
137
138 if (mii_phy_match(ma, makphys) != NULL)
139 return (10);
140
141 return (0);
142 }
143
144 static void
makphyattach(device_t parent,device_t self,void * aux)145 makphyattach(device_t parent, device_t self, void *aux)
146 {
147 struct mii_softc *sc = device_private(self);
148 struct mii_attach_args *ma = aux;
149 struct mii_data *mii = ma->mii_data;
150 const struct mii_phydesc *mpd;
151
152 mpd = mii_phy_match(ma, makphys);
153 aprint_naive(": Media interface\n");
154 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
155
156 sc->mii_dev = self;
157 sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
158 sc->mii_inst = mii->mii_instance;
159 sc->mii_phy = ma->mii_phyno;
160 sc->mii_funcs = &makphy_funcs;
161 sc->mii_pdata = mii;
162 sc->mii_flags = ma->mii_flags;
163 sc->mii_anegticks = MII_ANEGTICKS;
164
165 switch (sc->mii_mpd_model) {
166 case MII_MODEL_xxMARVELL_E1011:
167 case MII_MODEL_xxMARVELL_E1112:
168 if (PHY_READ(sc, MII_MAKPHY_ESSR) & ESSR_FIBER_LINK)
169 sc->mii_flags |= MIIF_HAVEFIBER;
170 break;
171 case MII_MODEL_xxMARVELL_E1149:
172 case MII_MODEL_xxMARVELL_E1149R:
173 /*
174 * Some 88E1149 PHY's page select is initialized to
175 * point to other bank instead of copper/fiber bank
176 * which in turn resulted in wrong registers were
177 * accessed during PHY operation. It is believed that
178 * page 0 should be used for copper PHY so reinitialize
179 * MII_MAKPHY_EADR to select default copper PHY. If parent
180 * device know the type of PHY(either copper or fiber),
181 * that information should be used to select default
182 * type of PHY.
183 */
184 PHY_WRITE(sc, MII_MAKPHY_EADR, 0);
185 break;
186 default:
187 break;
188 }
189
190 PHY_RESET(sc);
191
192 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
193 if (sc->mii_capabilities & BMSR_EXTSTAT)
194 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
195
196 aprint_normal_dev(self, "");
197 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
198 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
199 aprint_error("no media present");
200 else
201 mii_phy_add_media(sc);
202 aprint_normal("\n");
203 }
204
205 static void
makphy_reset(struct mii_softc * sc)206 makphy_reset(struct mii_softc *sc)
207 {
208 uint16_t pscr;
209
210 /* Assert CRS on transmit */
211 pscr = PHY_READ(sc, MII_MAKPHY_PSCR);
212 PHY_WRITE(sc, MII_MAKPHY_PSCR, pscr | PSCR_CRS_ON_TX);
213
214 mii_phy_reset(sc);
215 }
216
217 static int
makphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)218 makphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
219 {
220 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
221 int reg;
222
223 switch (cmd) {
224 case MII_POLLSTAT:
225 /*
226 * If we're not polling our PHY instance, just return.
227 */
228 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
229 return (0);
230 break;
231
232 case MII_MEDIACHG:
233 /*
234 * If the media indicates a different PHY instance,
235 * isolate ourselves.
236 */
237 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
238 reg = PHY_READ(sc, MII_BMCR);
239 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
240 return (0);
241 }
242
243 /*
244 * If the interface is not up, don't do anything.
245 */
246 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
247 break;
248
249 mii_phy_setmedia(sc);
250 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
251 /*
252 * when not in auto mode, we need to restart nego
253 * anyway, or a switch from a fixed mode to another
254 * fixed mode may not be seen by the switch.
255 */
256 PHY_WRITE(sc, MII_BMCR,
257 PHY_READ(sc, MII_BMCR) | BMCR_STARTNEG);
258 }
259 break;
260
261 case MII_TICK:
262 /*
263 * If we're not currently selected, just return.
264 */
265 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
266 return (0);
267
268 if (mii_phy_tick(sc) == EJUSTRETURN)
269 return (0);
270 break;
271
272 case MII_DOWN:
273 mii_phy_down(sc);
274 return (0);
275 }
276
277 /* Update the media status. */
278 mii_phy_status(sc);
279
280 /* Callback if something changed. */
281 mii_phy_update(sc, cmd);
282 return (0);
283 }
284
285 static void
makphy_status(struct mii_softc * sc)286 makphy_status(struct mii_softc *sc)
287 {
288 struct mii_data *mii = sc->mii_pdata;
289 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
290 int bmcr, pssr, gtsr;
291
292 mii->mii_media_status = IFM_AVALID;
293 mii->mii_media_active = IFM_ETHER;
294
295 pssr = PHY_READ(sc, MII_MAKPHY_PSSR);
296
297 if (pssr & PSSR_LINK)
298 mii->mii_media_status |= IFM_ACTIVE;
299
300 bmcr = PHY_READ(sc, MII_BMCR);
301 if (bmcr & BMCR_ISO) {
302 mii->mii_media_active |= IFM_NONE;
303 mii->mii_media_status = 0;
304 return;
305 }
306
307 if (bmcr & BMCR_LOOP)
308 mii->mii_media_active |= IFM_LOOP;
309
310 if (bmcr & BMCR_AUTOEN) {
311 /*
312 * The media status bits are only valid of autonegotiation
313 * has completed (or it's disabled).
314 */
315 if ((pssr & PSSR_RESOLVED) == 0) {
316 /* Erg, still trying, I guess... */
317 mii->mii_media_active |= IFM_NONE;
318 return;
319 }
320
321 switch (PSSR_SPEED_get(pssr)) {
322 case SPEED_1000:
323 mii->mii_media_active |= IFM_1000_T;
324 gtsr = PHY_READ(sc, MII_100T2SR);
325 if (gtsr & GTSR_MS_RES)
326 mii->mii_media_active |= IFM_ETH_MASTER;
327 break;
328
329 case SPEED_100:
330 mii->mii_media_active |= IFM_100_TX;
331 break;
332
333 case SPEED_10:
334 mii->mii_media_active |= IFM_10_T;
335 break;
336
337 default:
338 mii->mii_media_active |= IFM_NONE;
339 mii->mii_media_status = 0;
340 return;
341 }
342
343 if (pssr & PSSR_DUPLEX)
344 mii->mii_media_active |=
345 IFM_FDX | mii_phy_flowstatus(sc);
346 else
347 mii->mii_media_active |= IFM_HDX;
348 } else
349 mii->mii_media_active = ife->ifm_media;
350 }
351