1 | /* $NetBSD: gphyter.c,v 1.30 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 National Semiconductor's DP83891, DP83861 and DP83865 |
59 | * `Gig PHYTER' ethernet 10/100/1000 PHYs. The DP83891 is an older, |
60 | * non-firmware-driven version of the DP83861. The DP83865 is a low |
61 | * power version of the DP83861. |
62 | * |
63 | * Data Sheets available from www.national.com: |
64 | * http://www.national.com/ds/DP/DP83861.pdf |
65 | * http://www.national.com/ds/DP/DP83865.pdf |
66 | */ |
67 | |
68 | #include <sys/cdefs.h> |
69 | __KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.30 2016/07/07 06:55:41 msaitoh Exp $" ); |
70 | |
71 | #include <sys/param.h> |
72 | #include <sys/systm.h> |
73 | #include <sys/kernel.h> |
74 | #include <sys/device.h> |
75 | #include <sys/socket.h> |
76 | #include <sys/errno.h> |
77 | |
78 | #include <net/if.h> |
79 | #include <net/if_media.h> |
80 | |
81 | #include <dev/mii/mii.h> |
82 | #include <dev/mii/miivar.h> |
83 | #include <dev/mii/miidevs.h> |
84 | |
85 | #include <dev/mii/gphyterreg.h> |
86 | |
87 | static int gphytermatch(device_t, cfdata_t, void *); |
88 | static void gphyterattach(device_t, device_t, void *); |
89 | |
90 | CFATTACH_DECL_NEW(gphyter, sizeof(struct mii_softc), |
91 | gphytermatch, gphyterattach, mii_phy_detach, mii_phy_activate); |
92 | |
93 | static int gphyter_service(struct mii_softc *, struct mii_data *, int); |
94 | static void gphyter_status(struct mii_softc *); |
95 | static void gphyter_reset(struct mii_softc *); |
96 | |
97 | static const struct mii_phy_funcs gphyter_funcs = { |
98 | gphyter_service, gphyter_status, gphyter_reset, |
99 | }; |
100 | |
101 | static const struct mii_phydesc gphyters[] = { |
102 | { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83861, |
103 | MII_STR_xxNATSEMI_DP83861 }, |
104 | |
105 | { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83865, |
106 | MII_STR_xxNATSEMI_DP83865 }, |
107 | |
108 | { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83891, |
109 | MII_STR_xxNATSEMI_DP83891 }, |
110 | |
111 | { 0, 0, |
112 | NULL }, |
113 | }; |
114 | |
115 | static int |
116 | gphytermatch(device_t parent, cfdata_t match, void *aux) |
117 | { |
118 | struct mii_attach_args *ma = aux; |
119 | |
120 | if (mii_phy_match(ma, gphyters) != NULL) |
121 | return (10); |
122 | |
123 | return (0); |
124 | } |
125 | |
126 | static void |
127 | gphyterattach(device_t parent, device_t self, void *aux) |
128 | { |
129 | struct mii_softc *sc = device_private(self); |
130 | struct mii_attach_args *ma = aux; |
131 | struct mii_data *mii = ma->mii_data; |
132 | const struct mii_phydesc *mpd; |
133 | int anar, strap; |
134 | |
135 | mpd = mii_phy_match(ma, gphyters); |
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_inst = mii->mii_instance; |
141 | sc->mii_phy = ma->mii_phyno; |
142 | sc->mii_funcs = &gphyter_funcs; |
143 | sc->mii_pdata = mii; |
144 | sc->mii_flags = ma->mii_flags; |
145 | sc->mii_anegticks = MII_ANEGTICKS; |
146 | |
147 | PHY_RESET(sc); |
148 | |
149 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
150 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
151 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
152 | |
153 | /* |
154 | * The Gig PHYTER seems to have the 10baseT BMSR bits |
155 | * hard-wired to 0, even though the device supports |
156 | * 10baseT. What we do instead is read the post-reset |
157 | * ANAR, who's 10baseT-related bits are set by strapping |
158 | * pin 180, and fake the BMSR bits. |
159 | */ |
160 | anar = PHY_READ(sc, MII_ANAR); |
161 | if (anar & ANAR_10) |
162 | sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask); |
163 | if (anar & ANAR_10_FD) |
164 | sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask); |
165 | |
166 | aprint_normal_dev(self, "" ); |
167 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
168 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
169 | aprint_error("no media present" ); |
170 | else |
171 | mii_phy_add_media(sc); |
172 | aprint_normal("\n" ); |
173 | |
174 | strap = PHY_READ(sc, MII_GPHYTER_STRAP); |
175 | aprint_normal_dev(self, "strapped to %s mode" , |
176 | (strap & STRAP_MS_VAL) ? "master" : "slave" ); |
177 | if (strap & STRAP_NC_MODE) |
178 | aprint_normal(", pre-C5 BCM5400 compat enabled" ); |
179 | aprint_normal("\n" ); |
180 | } |
181 | |
182 | static int |
183 | gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
184 | { |
185 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
186 | int reg; |
187 | |
188 | switch (cmd) { |
189 | case MII_POLLSTAT: |
190 | /* |
191 | * If we're not polling our PHY instance, just return. |
192 | */ |
193 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
194 | return (0); |
195 | break; |
196 | |
197 | case MII_MEDIACHG: |
198 | /* |
199 | * If the media indicates a different PHY instance, |
200 | * isolate ourselves. |
201 | */ |
202 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
203 | reg = PHY_READ(sc, MII_BMCR); |
204 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
205 | return (0); |
206 | } |
207 | |
208 | /* |
209 | * If the interface is not up, don't do anything. |
210 | */ |
211 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
212 | break; |
213 | |
214 | mii_phy_setmedia(sc); |
215 | break; |
216 | |
217 | case MII_TICK: |
218 | /* |
219 | * If we're not currently selected, just return. |
220 | */ |
221 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
222 | return (0); |
223 | |
224 | if (mii_phy_tick(sc) == EJUSTRETURN) |
225 | return (0); |
226 | break; |
227 | |
228 | case MII_DOWN: |
229 | mii_phy_down(sc); |
230 | return (0); |
231 | } |
232 | |
233 | /* Update the media status. */ |
234 | mii_phy_status(sc); |
235 | |
236 | /* Callback if something changed. */ |
237 | mii_phy_update(sc, cmd); |
238 | return (0); |
239 | } |
240 | |
241 | static void |
242 | gphyter_status(struct mii_softc *sc) |
243 | { |
244 | struct mii_data *mii = sc->mii_pdata; |
245 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
246 | int bmsr, bmcr, physup, gtsr; |
247 | |
248 | mii->mii_media_status = IFM_AVALID; |
249 | mii->mii_media_active = IFM_ETHER; |
250 | |
251 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
252 | |
253 | physup = PHY_READ(sc, MII_GPHYTER_PHY_SUP); |
254 | |
255 | if (physup & PHY_SUP_LINK) |
256 | mii->mii_media_status |= IFM_ACTIVE; |
257 | |
258 | bmcr = PHY_READ(sc, MII_BMCR); |
259 | if (bmcr & BMCR_ISO) { |
260 | mii->mii_media_active |= IFM_NONE; |
261 | mii->mii_media_status = 0; |
262 | return; |
263 | } |
264 | |
265 | if (bmcr & BMCR_LOOP) |
266 | mii->mii_media_active |= IFM_LOOP; |
267 | |
268 | if (bmcr & BMCR_AUTOEN) { |
269 | /* |
270 | * The media status bits are only valid of autonegotiation |
271 | * has completed (or it's disabled). |
272 | */ |
273 | if ((bmsr & BMSR_ACOMP) == 0) { |
274 | /* Erg, still trying, I guess... */ |
275 | mii->mii_media_active |= IFM_NONE; |
276 | return; |
277 | } |
278 | |
279 | switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { |
280 | case PHY_SUP_SPEED1: |
281 | mii->mii_media_active |= IFM_1000_T; |
282 | gtsr = PHY_READ(sc, MII_100T2SR); |
283 | if (gtsr & GTSR_MS_RES) |
284 | mii->mii_media_active |= IFM_ETH_MASTER; |
285 | break; |
286 | |
287 | case PHY_SUP_SPEED0: |
288 | mii->mii_media_active |= IFM_100_TX; |
289 | break; |
290 | |
291 | case 0: |
292 | mii->mii_media_active |= IFM_10_T; |
293 | break; |
294 | |
295 | default: |
296 | mii->mii_media_active |= IFM_NONE; |
297 | mii->mii_media_status = 0; |
298 | } |
299 | if (physup & PHY_SUP_DUPLEX) |
300 | mii->mii_media_active |= |
301 | IFM_FDX | mii_phy_flowstatus(sc); |
302 | else |
303 | mii->mii_media_active |= IFM_HDX; |
304 | } else |
305 | mii->mii_media_active = ife->ifm_media; |
306 | } |
307 | |
308 | void |
309 | gphyter_reset(struct mii_softc *sc) |
310 | { |
311 | int reg, i; |
312 | |
313 | if (sc->mii_flags & MIIF_NOISOLATE) |
314 | reg = BMCR_RESET; |
315 | else |
316 | reg = BMCR_RESET | BMCR_ISO; |
317 | PHY_WRITE(sc, MII_BMCR, reg); |
318 | |
319 | /* |
320 | * It is best to allow a little time for the reset to settle |
321 | * in before we start polling the BMCR again. Notably, the |
322 | * DP83840A manual states that there should be a 500us delay |
323 | * between asserting software reset and attempting MII serial |
324 | * operations. Also, a DP83815 can get into a bad state on |
325 | * cable removal and reinsertion if we do not delay here. |
326 | */ |
327 | delay(500); |
328 | |
329 | /* Wait another 100ms for it to complete. */ |
330 | for (i = 0; i < 100; i++) { |
331 | reg = PHY_READ(sc, MII_BMCR); |
332 | if ((reg & BMCR_RESET) == 0) |
333 | break; |
334 | delay(1000); |
335 | } |
336 | |
337 | if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) |
338 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
339 | } |
340 | |