1 | /* $NetBSD: ukphy.c,v 1.49 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, and by Frank van der Linden. |
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 unknown PHYs |
59 | */ |
60 | |
61 | #include <sys/cdefs.h> |
62 | __KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.49 2016/07/07 06:55:41 msaitoh Exp $" ); |
63 | |
64 | #ifdef _KERNEL_OPT |
65 | #include "opt_mii.h" |
66 | #endif |
67 | |
68 | #include <sys/param.h> |
69 | #include <sys/systm.h> |
70 | #include <sys/kernel.h> |
71 | #include <sys/device.h> |
72 | #include <sys/socket.h> |
73 | #include <sys/errno.h> |
74 | |
75 | #include <net/if.h> |
76 | #include <net/if_media.h> |
77 | |
78 | #include <dev/mii/mii.h> |
79 | #include <dev/mii/miivar.h> |
80 | |
81 | static int ukphymatch(device_t, cfdata_t, void *); |
82 | static void ukphyattach(device_t, device_t, void *); |
83 | |
84 | CFATTACH_DECL3_NEW(ukphy, sizeof(struct mii_softc), |
85 | ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL, |
86 | DVF_DETACH_SHUTDOWN); |
87 | |
88 | static int ukphy_service(struct mii_softc *, struct mii_data *, int); |
89 | |
90 | static const struct mii_phy_funcs ukphy_funcs = { |
91 | ukphy_service, ukphy_status, mii_phy_reset, |
92 | }; |
93 | |
94 | static int |
95 | ukphymatch(device_t parent, cfdata_t match, void *aux) |
96 | { |
97 | |
98 | /* |
99 | * We know something is here, so always match at a low priority. |
100 | */ |
101 | return (1); |
102 | } |
103 | |
104 | static void |
105 | ukphyattach(device_t parent, device_t self, void *aux) |
106 | { |
107 | struct mii_softc *sc = device_private(self); |
108 | struct mii_attach_args *ma = aux; |
109 | struct mii_data *mii = ma->mii_data; |
110 | int oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
111 | int model = MII_MODEL(ma->mii_id2); |
112 | int rev = MII_REV(ma->mii_id2); |
113 | const char *descr; |
114 | |
115 | if ((descr = mii_get_descr(oui, model)) != NULL) |
116 | aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n" , |
117 | descr, oui, model, rev); |
118 | else |
119 | aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n" , |
120 | oui, model, rev); |
121 | aprint_naive(": Media interface\n" ); |
122 | |
123 | sc->mii_dev = self; |
124 | sc->mii_inst = mii->mii_instance; |
125 | sc->mii_phy = ma->mii_phyno; |
126 | sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
127 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
128 | sc->mii_mpd_rev = MII_REV(ma->mii_id2); |
129 | sc->mii_funcs = &ukphy_funcs; |
130 | sc->mii_pdata = mii; |
131 | sc->mii_flags = ma->mii_flags; |
132 | sc->mii_anegticks = MII_ANEGTICKS; |
133 | |
134 | /* |
135 | * Don't do loopback on unknown PHYs. It might confuse some of them. |
136 | */ |
137 | sc->mii_flags |= MIIF_NOLOOP; |
138 | |
139 | PHY_RESET(sc); |
140 | |
141 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
142 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
143 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
144 | aprint_normal_dev(self, "" ); |
145 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
146 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
147 | aprint_error("no media present" ); |
148 | else |
149 | mii_phy_add_media(sc); |
150 | aprint_normal("\n" ); |
151 | } |
152 | |
153 | static int |
154 | ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
155 | { |
156 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
157 | int reg; |
158 | |
159 | switch (cmd) { |
160 | case MII_POLLSTAT: |
161 | /* |
162 | * If we're not polling our PHY instance, just return. |
163 | */ |
164 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
165 | return (0); |
166 | break; |
167 | |
168 | case MII_MEDIACHG: |
169 | /* |
170 | * If the media indicates a different PHY instance, |
171 | * isolate ourselves. |
172 | */ |
173 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
174 | reg = PHY_READ(sc, MII_BMCR); |
175 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
176 | return (0); |
177 | } |
178 | |
179 | /* |
180 | * If the interface is not up, don't do anything. |
181 | */ |
182 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
183 | break; |
184 | |
185 | mii_phy_setmedia(sc); |
186 | break; |
187 | |
188 | case MII_TICK: |
189 | /* |
190 | * If we're not currently selected, just return. |
191 | */ |
192 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
193 | return (0); |
194 | |
195 | if (mii_phy_tick(sc) == EJUSTRETURN) |
196 | return (0); |
197 | break; |
198 | |
199 | case MII_DOWN: |
200 | mii_phy_down(sc); |
201 | return (0); |
202 | } |
203 | |
204 | /* Update the media status. */ |
205 | mii_phy_status(sc); |
206 | |
207 | /* Callback if something changed. */ |
208 | mii_phy_update(sc, cmd); |
209 | return (0); |
210 | } |
211 | |