1 | /* $NetBSD: inphy.c,v 1.55 2016/11/08 07:22:26 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 Intel's i82555 ethernet 10/100 PHY |
59 | * Data Sheet available from www.intel.com |
60 | */ |
61 | |
62 | #include <sys/cdefs.h> |
63 | __KERNEL_RCSID(0, "$NetBSD: inphy.c,v 1.55 2016/11/08 07:22:26 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/inphyreg.h> |
80 | |
81 | static int inphymatch(device_t, cfdata_t, void *); |
82 | static void inphyattach(device_t, device_t, void *); |
83 | |
84 | CFATTACH_DECL_NEW(inphy, sizeof(struct mii_softc), |
85 | inphymatch, inphyattach, mii_phy_detach, mii_phy_activate); |
86 | |
87 | static int inphy_service(struct mii_softc *, struct mii_data *, int); |
88 | static void inphy_status(struct mii_softc *); |
89 | |
90 | static const struct mii_phy_funcs inphy_funcs = { |
91 | inphy_service, inphy_status, mii_phy_reset, |
92 | }; |
93 | |
94 | static const struct mii_phydesc inphys[] = { |
95 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555, |
96 | MII_STR_yyINTEL_I82555 }, |
97 | |
98 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EH, |
99 | MII_STR_yyINTEL_I82562EH }, |
100 | |
101 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EM, |
102 | MII_STR_yyINTEL_I82562EM }, |
103 | |
104 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562ET, |
105 | MII_STR_yyINTEL_I82562ET }, |
106 | |
107 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562G, |
108 | MII_STR_yyINTEL_I82562G }, |
109 | |
110 | { 0, 0, |
111 | NULL }, |
112 | }; |
113 | |
114 | static int |
115 | inphymatch(device_t parent, cfdata_t match, void *aux) |
116 | { |
117 | struct mii_attach_args *ma = aux; |
118 | |
119 | if (mii_phy_match(ma, inphys) != NULL) |
120 | return (10); |
121 | |
122 | return (0); |
123 | } |
124 | |
125 | static void |
126 | inphyattach(device_t parent, device_t self, void *aux) |
127 | { |
128 | struct mii_softc *sc = device_private(self); |
129 | struct mii_attach_args *ma = aux; |
130 | struct mii_data *mii = ma->mii_data; |
131 | const struct mii_phydesc *mpd; |
132 | |
133 | mpd = mii_phy_match(ma, inphys); |
134 | aprint_naive(": Media interface\n" ); |
135 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
136 | |
137 | sc->mii_dev = self; |
138 | sc->mii_inst = mii->mii_instance; |
139 | sc->mii_phy = ma->mii_phyno; |
140 | sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
141 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
142 | sc->mii_mpd_rev = MII_REV(ma->mii_id2); |
143 | sc->mii_funcs = &inphy_funcs; |
144 | sc->mii_pdata = mii; |
145 | sc->mii_flags = ma->mii_flags; |
146 | sc->mii_anegticks = MII_ANEGTICKS; |
147 | |
148 | PHY_RESET(sc); |
149 | |
150 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
151 | aprint_normal_dev(self, "" ); |
152 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
153 | aprint_error("no media present" ); |
154 | else |
155 | mii_phy_add_media(sc); |
156 | aprint_normal("\n" ); |
157 | } |
158 | |
159 | static int |
160 | inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
161 | { |
162 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
163 | int reg; |
164 | |
165 | switch (cmd) { |
166 | case MII_POLLSTAT: |
167 | /* |
168 | * If we're not polling our PHY instance, just return. |
169 | */ |
170 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
171 | return (0); |
172 | break; |
173 | |
174 | case MII_MEDIACHG: |
175 | /* |
176 | * If the media indicates a different PHY instance, |
177 | * isolate ourselves. |
178 | */ |
179 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
180 | reg = PHY_READ(sc, MII_BMCR); |
181 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
182 | return (0); |
183 | } |
184 | |
185 | /* |
186 | * If the interface is not up, don't do anything. |
187 | */ |
188 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
189 | break; |
190 | |
191 | mii_phy_setmedia(sc); |
192 | break; |
193 | |
194 | case MII_TICK: |
195 | /* |
196 | * If we're not currently selected, just return. |
197 | */ |
198 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
199 | return (0); |
200 | |
201 | if (mii_phy_tick(sc) == EJUSTRETURN) |
202 | return (0); |
203 | break; |
204 | |
205 | case MII_DOWN: |
206 | mii_phy_down(sc); |
207 | return (0); |
208 | } |
209 | |
210 | /* Update the media status. */ |
211 | mii_phy_status(sc); |
212 | |
213 | /* Callback if something changed. */ |
214 | mii_phy_update(sc, cmd); |
215 | return (0); |
216 | } |
217 | |
218 | static void |
219 | inphy_status(struct mii_softc *sc) |
220 | { |
221 | struct mii_data *mii = sc->mii_pdata; |
222 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
223 | int bmsr, bmcr, scr; |
224 | |
225 | mii->mii_media_status = IFM_AVALID; |
226 | mii->mii_media_active = IFM_ETHER; |
227 | |
228 | bmsr = PHY_READ(sc, MII_BMSR) | |
229 | PHY_READ(sc, MII_BMSR); |
230 | if (bmsr & BMSR_LINK) |
231 | mii->mii_media_status |= IFM_ACTIVE; |
232 | |
233 | bmcr = PHY_READ(sc, MII_BMCR); |
234 | if (bmcr & BMCR_ISO) { |
235 | mii->mii_media_active |= IFM_NONE; |
236 | mii->mii_media_status = 0; |
237 | return; |
238 | } |
239 | |
240 | if (bmcr & BMCR_LOOP) |
241 | mii->mii_media_active |= IFM_LOOP; |
242 | |
243 | if (bmcr & BMCR_AUTOEN) { |
244 | if ((bmsr & BMSR_ACOMP) == 0) { |
245 | /* Erg, still trying, I guess... */ |
246 | mii->mii_media_active |= IFM_NONE; |
247 | return; |
248 | } |
249 | |
250 | scr = PHY_READ(sc, MII_INPHY_SCR); |
251 | if (scr & SCR_S100) |
252 | mii->mii_media_active |= IFM_100_TX; |
253 | else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) |
254 | mii->mii_media_active |= IFM_100_T4; |
255 | else |
256 | mii->mii_media_active |= IFM_10_T; |
257 | |
258 | if (scr & SCR_FDX) |
259 | mii->mii_media_active |= IFM_FDX; |
260 | else |
261 | mii->mii_media_active |= IFM_HDX; |
262 | |
263 | if (mii->mii_media_active & IFM_FDX) |
264 | mii->mii_media_active |= mii_phy_flowstatus(sc); |
265 | } else |
266 | mii->mii_media_active = ife->ifm_media; |
267 | } |
268 | |