1 | /* $NetBSD: gentbi.c,v 1.27 2014/06/16 16:48:16 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 generic ten-bit (1000BASE-SX) interfaces, built into |
59 | * many Gigabit Ethernet chips. |
60 | * |
61 | * All we have to do here is correctly report speed and duplex. |
62 | */ |
63 | |
64 | #include <sys/cdefs.h> |
65 | __KERNEL_RCSID(0, "$NetBSD: gentbi.c,v 1.27 2014/06/16 16:48:16 msaitoh Exp $" ); |
66 | |
67 | #include <sys/param.h> |
68 | #include <sys/systm.h> |
69 | #include <sys/kernel.h> |
70 | #include <sys/device.h> |
71 | #include <sys/socket.h> |
72 | #include <sys/errno.h> |
73 | |
74 | #include <net/if.h> |
75 | #include <net/if_media.h> |
76 | |
77 | #include <dev/mii/mii.h> |
78 | #include <dev/mii/miivar.h> |
79 | #include <dev/mii/miidevs.h> |
80 | |
81 | static int gentbimatch(device_t, cfdata_t, void *); |
82 | static void gentbiattach(device_t, device_t, void *); |
83 | |
84 | CFATTACH_DECL_NEW(gentbi, sizeof(struct mii_softc), |
85 | gentbimatch, gentbiattach, mii_phy_detach, mii_phy_activate); |
86 | |
87 | static int gentbi_service(struct mii_softc *, struct mii_data *, int); |
88 | static void gentbi_status(struct mii_softc *); |
89 | |
90 | static const struct mii_phy_funcs gentbi_funcs = { |
91 | gentbi_service, gentbi_status, mii_phy_reset, |
92 | }; |
93 | |
94 | static int |
95 | gentbimatch(device_t parent, cfdata_t match, void *aux) |
96 | { |
97 | struct mii_attach_args *ma = aux; |
98 | struct mii_data *mii = ma->mii_data; |
99 | int bmsr, extsr; |
100 | |
101 | /* |
102 | * We match as a generic TBI if: |
103 | * |
104 | * - There is no media in the BMSR. |
105 | * - EXTSR has only 1000X. |
106 | */ |
107 | bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); |
108 | if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) |
109 | return (0); |
110 | |
111 | extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); |
112 | if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) |
113 | return (0); |
114 | |
115 | if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { |
116 | /* |
117 | * We think this is a generic TBI. Return a match |
118 | * priority higher than ukphy, but lower than what |
119 | * specific drivers will return. |
120 | */ |
121 | return (2); |
122 | } |
123 | |
124 | return (0); |
125 | } |
126 | |
127 | static void |
128 | gentbiattach(device_t parent, device_t self, void *aux) |
129 | { |
130 | struct mii_softc *sc = device_private(self); |
131 | struct mii_attach_args *ma = aux; |
132 | struct mii_data *mii = ma->mii_data; |
133 | int oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
134 | int model = MII_MODEL(ma->mii_id2); |
135 | int rev = MII_REV(ma->mii_id2); |
136 | const char *descr; |
137 | |
138 | if ((descr = mii_get_descr(oui, model)) != NULL) |
139 | aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n" , |
140 | descr, oui, model, rev); |
141 | else |
142 | aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n" , |
143 | oui, model, rev); |
144 | |
145 | aprint_naive(": Generic ten-bit interface\n" ); |
146 | |
147 | sc->mii_dev = self; |
148 | sc->mii_inst = mii->mii_instance; |
149 | sc->mii_phy = ma->mii_phyno; |
150 | sc->mii_mpd_oui = oui; |
151 | sc->mii_mpd_model = model; |
152 | sc->mii_mpd_rev = rev; |
153 | sc->mii_funcs = &gentbi_funcs; |
154 | sc->mii_pdata = mii; |
155 | sc->mii_flags = ma->mii_flags; |
156 | sc->mii_anegticks = MII_ANEGTICKS; |
157 | |
158 | PHY_RESET(sc); |
159 | |
160 | /* |
161 | * Mask out all media in the BMSR. We only are really interested |
162 | * in "auto". |
163 | */ |
164 | sc->mii_capabilities = |
165 | PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; |
166 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
167 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
168 | |
169 | aprint_normal_dev(self, "" ); |
170 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
171 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
172 | aprint_error("no media present" ); |
173 | else |
174 | mii_phy_add_media(sc); |
175 | aprint_normal("\n" ); |
176 | } |
177 | |
178 | static int |
179 | gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
180 | { |
181 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
182 | int reg; |
183 | |
184 | switch (cmd) { |
185 | case MII_POLLSTAT: |
186 | /* |
187 | * If we're not polling our PHY instance, just return. |
188 | */ |
189 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
190 | return (0); |
191 | break; |
192 | |
193 | case MII_MEDIACHG: |
194 | /* |
195 | * If the media indicates a different PHY instance, |
196 | * isolate ourselves. |
197 | */ |
198 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
199 | reg = PHY_READ(sc, MII_BMCR); |
200 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
201 | return (0); |
202 | } |
203 | |
204 | /* |
205 | * If the interface is not up, don't do anything. |
206 | */ |
207 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
208 | break; |
209 | |
210 | mii_phy_setmedia(sc); |
211 | break; |
212 | |
213 | case MII_TICK: |
214 | /* |
215 | * If we're not currently selected, just return. |
216 | */ |
217 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
218 | return (0); |
219 | |
220 | if (mii_phy_tick(sc) == EJUSTRETURN) |
221 | return (0); |
222 | break; |
223 | |
224 | case MII_DOWN: |
225 | mii_phy_down(sc); |
226 | return (0); |
227 | } |
228 | |
229 | /* Update the media status. */ |
230 | mii_phy_status(sc); |
231 | |
232 | /* Callback if something changed. */ |
233 | mii_phy_update(sc, cmd); |
234 | return (0); |
235 | } |
236 | |
237 | static void |
238 | gentbi_status(struct mii_softc *sc) |
239 | { |
240 | struct mii_data *mii = sc->mii_pdata; |
241 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
242 | int bmsr, bmcr, anlpar; |
243 | |
244 | mii->mii_media_status = IFM_AVALID; |
245 | mii->mii_media_active = IFM_ETHER; |
246 | |
247 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
248 | |
249 | if (bmsr & BMSR_LINK) |
250 | mii->mii_media_status |= IFM_ACTIVE; |
251 | |
252 | bmcr = PHY_READ(sc, MII_BMCR); |
253 | if (bmcr & BMCR_ISO) { |
254 | mii->mii_media_active |= IFM_NONE; |
255 | mii->mii_media_status = 0; |
256 | return; |
257 | } |
258 | |
259 | if (bmcr & BMCR_LOOP) |
260 | mii->mii_media_active |= IFM_LOOP; |
261 | |
262 | if (bmcr & BMCR_AUTOEN) { |
263 | /* |
264 | * The media status bits are only valid if autonegotiation |
265 | * has completed (or it's disabled). |
266 | */ |
267 | if ((bmsr & BMSR_ACOMP) == 0) { |
268 | /* Erg, still trying, I guess... */ |
269 | mii->mii_media_active |= IFM_NONE; |
270 | return; |
271 | } |
272 | |
273 | /* |
274 | * The media is always 1000baseSX. Check the ANLPAR to |
275 | * see if we're doing full-duplex. |
276 | */ |
277 | mii->mii_media_active |= IFM_1000_SX; |
278 | |
279 | anlpar = PHY_READ(sc, MII_ANLPAR); |
280 | if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && |
281 | (anlpar & ANLPAR_X_FD) != 0) |
282 | mii->mii_media_active |= |
283 | IFM_FDX | mii_phy_flowstatus(sc); |
284 | else |
285 | mii->mii_media_active |= IFM_HDX; |
286 | } else |
287 | mii->mii_media_active = ife->ifm_media; |
288 | } |
289 | |