1 | /* $NetBSD: sqphy.c,v 1.51 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 Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs |
59 | * datasheet from www.seeq.com |
60 | */ |
61 | |
62 | #include <sys/cdefs.h> |
63 | __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.51 2016/07/07 06:55:41 msaitoh Exp $" ); |
64 | |
65 | #include <sys/param.h> |
66 | #include <sys/systm.h> |
67 | #include <sys/kernel.h> |
68 | #include <sys/device.h> |
69 | #include <sys/socket.h> |
70 | #include <sys/errno.h> |
71 | |
72 | #include <net/if.h> |
73 | #include <net/if_media.h> |
74 | |
75 | #include <dev/mii/mii.h> |
76 | #include <dev/mii/miivar.h> |
77 | #include <dev/mii/miidevs.h> |
78 | |
79 | #include <dev/mii/sqphyreg.h> |
80 | |
81 | static int sqphymatch(device_t, cfdata_t, void *); |
82 | static void sqphyattach(device_t, device_t, void *); |
83 | |
84 | CFATTACH_DECL_NEW(sqphy, sizeof(struct mii_softc), |
85 | sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); |
86 | |
87 | static int sqphy_service(struct mii_softc *, struct mii_data *, int); |
88 | static void sqphy_status(struct mii_softc *); |
89 | static void sqphy_84220_reset(struct mii_softc *); |
90 | |
91 | static const struct mii_phy_funcs sqphy_funcs = { |
92 | sqphy_service, sqphy_status, mii_phy_reset, |
93 | }; |
94 | |
95 | static const struct mii_phy_funcs sqphy_84220_funcs = { |
96 | sqphy_service, sqphy_status, sqphy_84220_reset, |
97 | }; |
98 | |
99 | static const struct mii_phydesc sqphys[] = { |
100 | { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, |
101 | MII_STR_SEEQ_80220 }, |
102 | |
103 | { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, |
104 | MII_STR_SEEQ_80225 }, |
105 | |
106 | { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, |
107 | MII_STR_SEEQ_84220 }, |
108 | |
109 | { 0, 0, |
110 | NULL }, |
111 | }; |
112 | |
113 | static int |
114 | sqphymatch(device_t parent, cfdata_t match, void *aux) |
115 | { |
116 | struct mii_attach_args *ma = aux; |
117 | |
118 | if (mii_phy_match(ma, sqphys) != NULL) |
119 | return (10); |
120 | |
121 | return (0); |
122 | } |
123 | |
124 | static void |
125 | sqphyattach(device_t parent, device_t self, void *aux) |
126 | { |
127 | struct mii_softc *sc = device_private(self); |
128 | struct mii_attach_args *ma = aux; |
129 | struct mii_data *mii = ma->mii_data; |
130 | const struct mii_phydesc *mpd; |
131 | |
132 | mpd = mii_phy_match(ma, sqphys); |
133 | aprint_naive(": Media interface\n" ); |
134 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
135 | |
136 | sc->mii_dev = self; |
137 | sc->mii_inst = mii->mii_instance; |
138 | sc->mii_phy = ma->mii_phyno; |
139 | sc->mii_pdata = mii; |
140 | sc->mii_flags = ma->mii_flags; |
141 | sc->mii_anegticks = MII_ANEGTICKS; |
142 | |
143 | switch (MII_MODEL(ma->mii_id2)) { |
144 | case MII_MODEL_SEEQ_84220: |
145 | sc->mii_funcs = &sqphy_84220_funcs; |
146 | aprint_normal_dev(self, |
147 | "using Seeq 84220 isolate/reset hack\n" ); |
148 | break; |
149 | |
150 | default: |
151 | sc->mii_funcs = &sqphy_funcs; |
152 | } |
153 | |
154 | PHY_RESET(sc); |
155 | |
156 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
157 | aprint_normal_dev(self, "" ); |
158 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
159 | aprint_error("no media present" ); |
160 | else |
161 | mii_phy_add_media(sc); |
162 | aprint_normal("\n" ); |
163 | } |
164 | |
165 | static int |
166 | sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
167 | { |
168 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
169 | int reg; |
170 | |
171 | switch (cmd) { |
172 | case MII_POLLSTAT: |
173 | /* |
174 | * If we're not polling our PHY instance, just return. |
175 | */ |
176 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
177 | return (0); |
178 | break; |
179 | |
180 | case MII_MEDIACHG: |
181 | /* |
182 | * If the media indicates a different PHY instance, |
183 | * isolate ourselves. |
184 | */ |
185 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
186 | reg = PHY_READ(sc, MII_BMCR); |
187 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
188 | return (0); |
189 | } |
190 | |
191 | /* |
192 | * If the interface is not up, don't do anything. |
193 | */ |
194 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
195 | break; |
196 | |
197 | mii_phy_setmedia(sc); |
198 | break; |
199 | |
200 | case MII_TICK: |
201 | /* |
202 | * If we're not currently selected, just return. |
203 | */ |
204 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
205 | return (0); |
206 | |
207 | if (mii_phy_tick(sc) == EJUSTRETURN) |
208 | return (0); |
209 | break; |
210 | |
211 | case MII_DOWN: |
212 | mii_phy_down(sc); |
213 | return (0); |
214 | } |
215 | |
216 | /* Update the media status. */ |
217 | mii_phy_status(sc); |
218 | |
219 | /* Callback if something changed. */ |
220 | mii_phy_update(sc, cmd); |
221 | return (0); |
222 | } |
223 | |
224 | static void |
225 | sqphy_status(struct mii_softc *sc) |
226 | { |
227 | struct mii_data *mii = sc->mii_pdata; |
228 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
229 | int bmsr, bmcr, status; |
230 | |
231 | mii->mii_media_status = IFM_AVALID; |
232 | mii->mii_media_active = IFM_ETHER; |
233 | |
234 | bmsr = PHY_READ(sc, MII_BMSR) | |
235 | PHY_READ(sc, MII_BMSR); |
236 | if (bmsr & BMSR_LINK) |
237 | mii->mii_media_status |= IFM_ACTIVE; |
238 | |
239 | bmcr = PHY_READ(sc, MII_BMCR); |
240 | if (bmcr & BMCR_ISO) { |
241 | mii->mii_media_active |= IFM_NONE; |
242 | mii->mii_media_status = 0; |
243 | return; |
244 | } |
245 | |
246 | if (bmcr & BMCR_LOOP) |
247 | mii->mii_media_active |= IFM_LOOP; |
248 | |
249 | if (bmcr & BMCR_AUTOEN) { |
250 | if ((bmsr & BMSR_ACOMP) == 0) { |
251 | /* Erg, still trying, I guess... */ |
252 | mii->mii_media_active |= IFM_NONE; |
253 | return; |
254 | } |
255 | /* |
256 | * Note: don't get fancy here -- the 80225 only |
257 | * supports the SPD_DET and DPLX_DET bits in |
258 | * the STATUS register. |
259 | */ |
260 | status = PHY_READ(sc, MII_SQPHY_STATUS); |
261 | if (status & STATUS_SPD_DET) |
262 | mii->mii_media_active |= IFM_100_TX; |
263 | else |
264 | mii->mii_media_active |= IFM_10_T; |
265 | if (status & STATUS_DPLX_DET) |
266 | mii->mii_media_active |= IFM_FDX; |
267 | else |
268 | mii->mii_media_active |= IFM_HDX; |
269 | } else |
270 | mii->mii_media_active = ife->ifm_media; |
271 | } |
272 | |
273 | static void |
274 | sqphy_84220_reset(struct mii_softc *sc) |
275 | { |
276 | int reg; |
277 | |
278 | mii_phy_reset(sc); |
279 | |
280 | /* |
281 | * This PHY sometimes insists on coming out of reset isolated, |
282 | * even when the MDA[0-3] pins are pulled high (to indicate |
283 | * PHY address 0), contrary to the device's datasheet. |
284 | * |
285 | * Morever, simply clearing BMCR_ISO here isn't enough; the |
286 | * change won't stick until about 30mS *after* the PHY has |
287 | * been reset. |
288 | * |
289 | * This sucks. |
290 | */ |
291 | while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && |
292 | ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { |
293 | |
294 | delay(35000); |
295 | PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); |
296 | delay(35000); |
297 | } |
298 | } |
299 | |