1 | /* $NetBSD: icsphy.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 Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY |
59 | * datasheet from www.icst.com |
60 | */ |
61 | |
62 | #include <sys/cdefs.h> |
63 | __KERNEL_RCSID(0, "$NetBSD: icsphy.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 | |
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/icsphyreg.h> |
79 | |
80 | static int icsphymatch(device_t, cfdata_t, void *); |
81 | static void icsphyattach(device_t, device_t, void *); |
82 | |
83 | CFATTACH_DECL_NEW(icsphy, sizeof(struct mii_softc), |
84 | icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate); |
85 | |
86 | static int icsphy_service(struct mii_softc *, struct mii_data *, int); |
87 | static void icsphy_status(struct mii_softc *); |
88 | static void icsphy_reset(struct mii_softc *); |
89 | |
90 | static const struct mii_phy_funcs icsphy_funcs = { |
91 | icsphy_service, icsphy_status, icsphy_reset, |
92 | }; |
93 | |
94 | static const struct mii_phydesc icsphys[] = { |
95 | { MII_OUI_ICS, MII_MODEL_ICS_1889, |
96 | MII_STR_ICS_1889 }, |
97 | |
98 | { MII_OUI_ICS, MII_MODEL_ICS_1890, |
99 | MII_STR_ICS_1890 }, |
100 | |
101 | { MII_OUI_ICS, MII_MODEL_ICS_1892, |
102 | MII_STR_ICS_1892 }, |
103 | |
104 | { MII_OUI_ICS, MII_MODEL_ICS_1893, |
105 | MII_STR_ICS_1893 }, |
106 | |
107 | { 0, 0, |
108 | NULL }, |
109 | }; |
110 | |
111 | static int |
112 | icsphymatch(device_t parent, cfdata_t match, void *aux) |
113 | { |
114 | struct mii_attach_args *ma = aux; |
115 | |
116 | if (mii_phy_match(ma, icsphys) != NULL) |
117 | return (10); |
118 | |
119 | return (0); |
120 | } |
121 | |
122 | static void |
123 | icsphyattach(device_t parent, device_t self, void *aux) |
124 | { |
125 | struct mii_softc *sc = device_private(self); |
126 | struct mii_attach_args *ma = aux; |
127 | struct mii_data *mii = ma->mii_data; |
128 | const struct mii_phydesc *mpd; |
129 | |
130 | mpd = mii_phy_match(ma, icsphys); |
131 | aprint_naive(": Media interface\n" ); |
132 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
133 | |
134 | sc->mii_dev = self; |
135 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
136 | sc->mii_inst = mii->mii_instance; |
137 | sc->mii_phy = ma->mii_phyno; |
138 | sc->mii_funcs = &icsphy_funcs; |
139 | sc->mii_pdata = mii; |
140 | sc->mii_flags = ma->mii_flags; |
141 | sc->mii_anegticks = MII_ANEGTICKS; |
142 | |
143 | PHY_RESET(sc); |
144 | |
145 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
146 | aprint_normal_dev(self, "" ); |
147 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
148 | aprint_error("no media present" ); |
149 | else |
150 | mii_phy_add_media(sc); |
151 | aprint_normal("\n" ); |
152 | } |
153 | |
154 | static int |
155 | icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
156 | { |
157 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
158 | int reg; |
159 | |
160 | switch (cmd) { |
161 | case MII_POLLSTAT: |
162 | /* |
163 | * If we're not polling our PHY instance, just return. |
164 | */ |
165 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
166 | return (0); |
167 | break; |
168 | |
169 | case MII_MEDIACHG: |
170 | /* |
171 | * If the media indicates a different PHY instance, |
172 | * isolate ourselves. |
173 | */ |
174 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
175 | reg = PHY_READ(sc, MII_BMCR); |
176 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
177 | return (0); |
178 | } |
179 | |
180 | /* |
181 | * If the interface is not up, don't do anything. |
182 | */ |
183 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
184 | break; |
185 | |
186 | mii_phy_setmedia(sc); |
187 | break; |
188 | |
189 | case MII_TICK: |
190 | /* |
191 | * If we're not currently selected, just return. |
192 | */ |
193 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
194 | return (0); |
195 | |
196 | if (mii_phy_tick(sc) == EJUSTRETURN) |
197 | return (0); |
198 | break; |
199 | |
200 | case MII_DOWN: |
201 | mii_phy_down(sc); |
202 | return (0); |
203 | } |
204 | |
205 | /* Update the media status. */ |
206 | mii_phy_status(sc); |
207 | |
208 | /* Callback if something changed. */ |
209 | mii_phy_update(sc, cmd); |
210 | return (0); |
211 | } |
212 | |
213 | static void |
214 | icsphy_status(struct mii_softc *sc) |
215 | { |
216 | struct mii_data *mii = sc->mii_pdata; |
217 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
218 | int bmcr, qpr; |
219 | |
220 | mii->mii_media_status = IFM_AVALID; |
221 | mii->mii_media_active = IFM_ETHER; |
222 | |
223 | /* |
224 | * Don't get link from the BMSR. It's available in the QPR, |
225 | * and we have to read it twice to unlatch it anyhow. This |
226 | * gives us fewer register reads. |
227 | */ |
228 | qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ |
229 | qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ |
230 | |
231 | if (qpr & QPR_LINK) |
232 | mii->mii_media_status |= IFM_ACTIVE; |
233 | |
234 | bmcr = PHY_READ(sc, MII_BMCR); |
235 | if (bmcr & BMCR_ISO) { |
236 | mii->mii_media_active |= IFM_NONE; |
237 | mii->mii_media_status = 0; |
238 | return; |
239 | } |
240 | |
241 | if (bmcr & BMCR_LOOP) |
242 | mii->mii_media_active |= IFM_LOOP; |
243 | |
244 | if (bmcr & BMCR_AUTOEN) { |
245 | if ((qpr & QPR_ACOMP) == 0) { |
246 | /* Erg, still trying, I guess... */ |
247 | mii->mii_media_active |= IFM_NONE; |
248 | return; |
249 | } |
250 | if (qpr & QPR_SPEED) |
251 | mii->mii_media_active |= IFM_100_TX; |
252 | else |
253 | mii->mii_media_active |= IFM_10_T; |
254 | |
255 | if (qpr & QPR_FDX) |
256 | mii->mii_media_active |= IFM_FDX; |
257 | else |
258 | mii->mii_media_active |= IFM_HDX; |
259 | } else |
260 | mii->mii_media_active = ife->ifm_media; |
261 | } |
262 | |
263 | static void |
264 | icsphy_reset(struct mii_softc *sc) |
265 | { |
266 | |
267 | mii_phy_reset(sc); |
268 | /* set powerdown feature */ |
269 | switch (sc->mii_mpd_model) { |
270 | case MII_MODEL_ICS_1890: |
271 | case MII_MODEL_ICS_1893: |
272 | PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); |
273 | break; |
274 | case MII_MODEL_ICS_1892: |
275 | PHY_WRITE(sc, MII_ICSPHY_ECR2, |
276 | ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); |
277 | break; |
278 | default: |
279 | /* 1889 have no ECR2 */ |
280 | break; |
281 | } |
282 | /* |
283 | * There is no description that the reset do auto-negotiation in the |
284 | * data sheet. |
285 | */ |
286 | PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); |
287 | } |
288 | |