1 | /* $NetBSD: lxtphy.c,v 1.50 2016/07/07 06:55:41 msaitoh Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1998, 1999, 2000 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 Level One's LXT-970 ethernet 10/100 PHY |
59 | * datasheet from www.level1.com |
60 | */ |
61 | |
62 | #include <sys/cdefs.h> |
63 | __KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.50 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/lxtphyreg.h> |
80 | |
81 | static int lxtphymatch(device_t, cfdata_t, void *); |
82 | static void lxtphyattach(device_t, device_t, void *); |
83 | |
84 | CFATTACH_DECL_NEW(lxtphy, sizeof(struct mii_softc), |
85 | lxtphymatch, lxtphyattach, mii_phy_detach, mii_phy_activate); |
86 | |
87 | static int lxtphy_service(struct mii_softc *, struct mii_data *, int); |
88 | static void lxtphy_status(struct mii_softc *); |
89 | static void lxtphy_reset(struct mii_softc *); |
90 | |
91 | static void lxtphy_set_tp(struct mii_softc *); |
92 | static void lxtphy_set_fx(struct mii_softc *); |
93 | |
94 | static const struct mii_phy_funcs lxtphy_funcs = { |
95 | lxtphy_service, lxtphy_status, lxtphy_reset, |
96 | }; |
97 | |
98 | static const struct mii_phy_funcs lxtphy971_funcs = { |
99 | lxtphy_service, ukphy_status, lxtphy_reset, |
100 | }; |
101 | |
102 | static const struct mii_phydesc lxtphys[] = { |
103 | { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, |
104 | MII_STR_xxLEVEL1_LXT970 }, |
105 | |
106 | { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT971, |
107 | MII_STR_LEVEL1_LXT971 }, |
108 | |
109 | { 0, 0, |
110 | NULL }, |
111 | }; |
112 | |
113 | static int |
114 | lxtphymatch(device_t parent, cfdata_t match, void *aux) |
115 | { |
116 | struct mii_attach_args *ma = aux; |
117 | |
118 | if (mii_phy_match(ma, lxtphys) != NULL) |
119 | return (10); |
120 | |
121 | return (0); |
122 | } |
123 | |
124 | static void |
125 | lxtphyattach(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, lxtphys); |
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 | if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971) |
140 | sc->mii_funcs = &lxtphy971_funcs; |
141 | else |
142 | sc->mii_funcs = &lxtphy_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 | aprint_normal_dev(self, "" ); |
151 | |
152 | if (sc->mii_flags & MIIF_HAVEFIBER) { |
153 | #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) |
154 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), |
155 | MII_MEDIA_100_TX); |
156 | aprint_normal("100baseFX, " ); |
157 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), |
158 | MII_MEDIA_100_TX_FDX); |
159 | aprint_normal("100baseFX-FDX, " ); |
160 | #undef ADD |
161 | } |
162 | |
163 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
164 | aprint_error("no media present" ); |
165 | else |
166 | mii_phy_add_media(sc); |
167 | aprint_normal("\n" ); |
168 | } |
169 | |
170 | static int |
171 | lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
172 | { |
173 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
174 | int reg; |
175 | |
176 | switch (cmd) { |
177 | case MII_POLLSTAT: |
178 | /* |
179 | * If we're not polling our PHY instance, just return. |
180 | */ |
181 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
182 | return (0); |
183 | break; |
184 | |
185 | case MII_MEDIACHG: |
186 | /* |
187 | * If the media indicates a different PHY instance, |
188 | * isolate ourselves. |
189 | */ |
190 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
191 | reg = PHY_READ(sc, MII_BMCR); |
192 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
193 | return (0); |
194 | } |
195 | |
196 | /* |
197 | * If the interface is not up, don't do anything. |
198 | */ |
199 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
200 | break; |
201 | |
202 | if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) |
203 | lxtphy_set_fx(sc); |
204 | else |
205 | lxtphy_set_tp(sc); |
206 | |
207 | mii_phy_setmedia(sc); |
208 | break; |
209 | |
210 | case MII_TICK: |
211 | /* |
212 | * If we're not currently selected, just return. |
213 | */ |
214 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
215 | return (0); |
216 | |
217 | if (mii_phy_tick(sc) == EJUSTRETURN) |
218 | return (0); |
219 | break; |
220 | |
221 | case MII_DOWN: |
222 | mii_phy_down(sc); |
223 | return (0); |
224 | } |
225 | |
226 | /* Update the media status. */ |
227 | mii_phy_status(sc); |
228 | |
229 | /* Callback if something changed. */ |
230 | mii_phy_update(sc, cmd); |
231 | return (0); |
232 | } |
233 | |
234 | static void |
235 | lxtphy_status(struct mii_softc *sc) |
236 | { |
237 | struct mii_data *mii = sc->mii_pdata; |
238 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
239 | int bmcr, bmsr, csr; |
240 | |
241 | mii->mii_media_status = IFM_AVALID; |
242 | mii->mii_media_active = IFM_ETHER; |
243 | |
244 | /* |
245 | * Get link status from the CSR; we need to read the CSR |
246 | * for media type anyhow, and the link status in the CSR |
247 | * doens't latch, so fewer register reads are required. |
248 | */ |
249 | csr = PHY_READ(sc, MII_LXTPHY_CSR); |
250 | if (csr & CSR_LINK) |
251 | mii->mii_media_status |= IFM_ACTIVE; |
252 | |
253 | bmcr = PHY_READ(sc, MII_BMCR); |
254 | if (bmcr & BMCR_ISO) { |
255 | mii->mii_media_active |= IFM_NONE; |
256 | mii->mii_media_status = 0; |
257 | return; |
258 | } |
259 | |
260 | if (bmcr & BMCR_LOOP) |
261 | mii->mii_media_active |= IFM_LOOP; |
262 | |
263 | if (bmcr & BMCR_AUTOEN) { |
264 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
265 | if ((bmsr & BMSR_ACOMP) == 0) { |
266 | /* Erg, still trying, I guess... */ |
267 | mii->mii_media_active |= IFM_NONE; |
268 | return; |
269 | } |
270 | if (csr & CSR_SPEED) |
271 | mii->mii_media_active |= IFM_100_TX; |
272 | else |
273 | mii->mii_media_active |= IFM_10_T; |
274 | |
275 | if (csr & CSR_DUPLEX) |
276 | mii->mii_media_active |= IFM_FDX; |
277 | else |
278 | mii->mii_media_active |= IFM_HDX; |
279 | } else |
280 | mii->mii_media_active = ife->ifm_media; |
281 | } |
282 | |
283 | static void |
284 | lxtphy_reset(struct mii_softc *sc) |
285 | { |
286 | |
287 | mii_phy_reset(sc); |
288 | PHY_WRITE(sc, MII_LXTPHY_IER, |
289 | PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); |
290 | } |
291 | |
292 | static void |
293 | lxtphy_set_tp(struct mii_softc *sc) |
294 | { |
295 | int cfg; |
296 | |
297 | cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); |
298 | cfg &= ~CONFIG_100BASEFX; |
299 | PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); |
300 | } |
301 | |
302 | static void |
303 | lxtphy_set_fx(struct mii_softc *sc) |
304 | { |
305 | int cfg; |
306 | |
307 | cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); |
308 | cfg |= CONFIG_100BASEFX; |
309 | PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); |
310 | } |
311 | |