1 | /* $NetBSD: glxtphy.c,v 1.25 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 the Level One LXT-1000 10/100/1000 PHY. |
59 | */ |
60 | |
61 | #include <sys/cdefs.h> |
62 | __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.25 2016/07/07 06:55:41 msaitoh Exp $" ); |
63 | |
64 | #include <sys/param.h> |
65 | #include <sys/systm.h> |
66 | #include <sys/kernel.h> |
67 | #include <sys/device.h> |
68 | #include <sys/socket.h> |
69 | #include <sys/errno.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/glxtphyreg.h> |
79 | |
80 | static int glxtphymatch(device_t, cfdata_t, void *); |
81 | static void glxtphyattach(device_t, device_t, void *); |
82 | |
83 | CFATTACH_DECL_NEW(glxtphy, sizeof(struct mii_softc), |
84 | glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate); |
85 | |
86 | static int glxtphy_service(struct mii_softc *, struct mii_data *, int); |
87 | static void glxtphy_status(struct mii_softc *); |
88 | |
89 | static const struct mii_phy_funcs glxtphy_funcs = { |
90 | glxtphy_service, glxtphy_status, mii_phy_reset, |
91 | }; |
92 | |
93 | static const struct mii_phydesc glxtphys[] = { |
94 | { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD, |
95 | MII_STR_LEVEL1_LXT1000_OLD }, |
96 | |
97 | { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD, |
98 | MII_STR_LEVEL1_LXT1000_OLD }, |
99 | |
100 | { 0, 0, |
101 | NULL }, |
102 | }; |
103 | |
104 | static int |
105 | glxtphymatch(device_t parent, cfdata_t match, |
106 | void *aux) |
107 | { |
108 | struct mii_attach_args *ma = aux; |
109 | |
110 | if (mii_phy_match(ma, glxtphys) != NULL) |
111 | return (10); |
112 | |
113 | return (0); |
114 | } |
115 | |
116 | static void |
117 | glxtphyattach(device_t parent, device_t self, void *aux) |
118 | { |
119 | struct mii_softc *sc = device_private(self); |
120 | struct mii_attach_args *ma = aux; |
121 | struct mii_data *mii = ma->mii_data; |
122 | const struct mii_phydesc *mpd; |
123 | |
124 | mpd = mii_phy_match(ma, glxtphys); |
125 | aprint_naive(": Media interface\n" ); |
126 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
127 | |
128 | sc->mii_dev = self; |
129 | sc->mii_inst = mii->mii_instance; |
130 | sc->mii_phy = ma->mii_phyno; |
131 | sc->mii_funcs = &glxtphy_funcs; |
132 | sc->mii_pdata = mii; |
133 | sc->mii_flags = ma->mii_flags; |
134 | sc->mii_anegticks = MII_ANEGTICKS; |
135 | |
136 | PHY_RESET(sc); |
137 | |
138 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
139 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
140 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
141 | |
142 | aprint_normal_dev(self, "" ); |
143 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
144 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
145 | aprint_error("no media present" ); |
146 | else |
147 | mii_phy_add_media(sc); |
148 | aprint_normal("\n" ); |
149 | } |
150 | |
151 | static int |
152 | glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
153 | { |
154 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
155 | int reg; |
156 | |
157 | switch (cmd) { |
158 | case MII_POLLSTAT: |
159 | /* |
160 | * If we're not polling our PHY instance, just return. |
161 | */ |
162 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
163 | return (0); |
164 | break; |
165 | |
166 | case MII_MEDIACHG: |
167 | /* |
168 | * If the media indicates a different PHY instance, |
169 | * isolate ourselves. |
170 | */ |
171 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
172 | reg = PHY_READ(sc, MII_BMCR); |
173 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
174 | return (0); |
175 | } |
176 | |
177 | /* |
178 | * If the interface is not up, don't do anything. |
179 | */ |
180 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
181 | break; |
182 | |
183 | mii_phy_setmedia(sc); |
184 | break; |
185 | |
186 | case MII_TICK: |
187 | /* |
188 | * If we're not currently selected, just return. |
189 | */ |
190 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
191 | return (0); |
192 | |
193 | if (mii_phy_tick(sc) == EJUSTRETURN) |
194 | return (0); |
195 | break; |
196 | |
197 | case MII_DOWN: |
198 | mii_phy_down(sc); |
199 | return (0); |
200 | } |
201 | |
202 | /* Update the media status. */ |
203 | mii_phy_status(sc); |
204 | |
205 | /* Callback if something changed. */ |
206 | mii_phy_update(sc, cmd); |
207 | return (0); |
208 | } |
209 | |
210 | static void |
211 | glxtphy_status(struct mii_softc *sc) |
212 | { |
213 | struct mii_data *mii = sc->mii_pdata; |
214 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
215 | int bmcr, qsr, gtsr; |
216 | |
217 | mii->mii_media_status = IFM_AVALID; |
218 | mii->mii_media_active = IFM_ETHER; |
219 | |
220 | qsr = PHY_READ(sc, MII_GLXTPHY_QSR); |
221 | |
222 | if (qsr & QSR_LINK) |
223 | mii->mii_media_status |= IFM_ACTIVE; |
224 | |
225 | bmcr = PHY_READ(sc, MII_BMCR); |
226 | if (bmcr & BMCR_ISO) { |
227 | mii->mii_media_active |= IFM_NONE; |
228 | mii->mii_media_status = 0; |
229 | return; |
230 | } |
231 | |
232 | if (bmcr & BMCR_LOOP) |
233 | mii->mii_media_active |= IFM_LOOP; |
234 | |
235 | if (bmcr & BMCR_AUTOEN) { |
236 | /* |
237 | * The media status bits are only valid of autonegotiation |
238 | * has completed (or it's disabled). |
239 | */ |
240 | if ((qsr & QSR_ACOMP) == 0) { |
241 | /* Erg, still trying, I guess... */ |
242 | mii->mii_media_active |= IFM_NONE; |
243 | return; |
244 | } |
245 | |
246 | switch (QSR_SPEED_get(qsr)) { |
247 | case SPEED_1000: |
248 | mii->mii_media_active |= IFM_1000_T; |
249 | gtsr = PHY_READ(sc, MII_100T2SR); |
250 | if (gtsr & GTSR_MS_RES) |
251 | mii->mii_media_active |= IFM_ETH_MASTER; |
252 | break; |
253 | |
254 | case SPEED_100: |
255 | mii->mii_media_active |= IFM_100_TX; |
256 | break; |
257 | |
258 | case SPEED_10_MII: |
259 | case SPEED_10_SERIAL: |
260 | mii->mii_media_active |= IFM_10_T; |
261 | break; |
262 | } |
263 | |
264 | if (qsr & QSR_DUPLEX) |
265 | mii->mii_media_active |= |
266 | IFM_FDX | mii_phy_flowstatus(sc); |
267 | else |
268 | mii->mii_media_active |= IFM_HDX; |
269 | } else |
270 | mii->mii_media_active = ife->ifm_media; |
271 | } |
272 | |