1 | /* $NetBSD: iophy.c,v 1.38 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 | * Intel 82553 PHY driver |
59 | */ |
60 | |
61 | #include <sys/cdefs.h> |
62 | __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.38 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 | |
70 | #include <net/if.h> |
71 | #include <net/if_media.h> |
72 | |
73 | #include <dev/mii/mii.h> |
74 | #include <dev/mii/miivar.h> |
75 | #include <dev/mii/miidevs.h> |
76 | |
77 | #include <dev/mii/iophyreg.h> |
78 | |
79 | static int iophymatch(device_t, cfdata_t, void *); |
80 | static void iophyattach(device_t, device_t, void *); |
81 | |
82 | CFATTACH_DECL_NEW(iophy, sizeof(struct mii_softc), |
83 | iophymatch, iophyattach, mii_phy_detach, mii_phy_activate); |
84 | |
85 | static int iophy_service(struct mii_softc *, struct mii_data *, int); |
86 | static void iophy_status(struct mii_softc *); |
87 | |
88 | static const struct mii_phy_funcs iophy_funcs = { |
89 | iophy_service, iophy_status, mii_phy_reset, |
90 | }; |
91 | |
92 | static const struct mii_phydesc iophys[] = { |
93 | { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553, |
94 | MII_STR_xxINTEL_I82553 }, |
95 | |
96 | { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82553, |
97 | MII_STR_yyINTEL_I82553 }, |
98 | |
99 | { 0, 0, |
100 | NULL }, |
101 | }; |
102 | |
103 | static int |
104 | iophymatch(device_t parent, cfdata_t match, void *aux) |
105 | { |
106 | struct mii_attach_args *ma = aux; |
107 | |
108 | if (mii_phy_match(ma, iophys) != NULL) |
109 | return (10); |
110 | |
111 | return (0); |
112 | } |
113 | |
114 | static void |
115 | iophyattach(device_t parent, device_t self, void *aux) |
116 | { |
117 | struct mii_softc *sc = device_private(self); |
118 | struct mii_attach_args *ma = aux; |
119 | struct mii_data *mii = ma->mii_data; |
120 | const struct mii_phydesc *mpd; |
121 | |
122 | mpd = mii_phy_match(ma, iophys); |
123 | aprint_naive(": Media interface\n" ); |
124 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
125 | |
126 | sc->mii_dev = self; |
127 | sc->mii_inst = mii->mii_instance; |
128 | sc->mii_phy = ma->mii_phyno; |
129 | sc->mii_funcs = &iophy_funcs; |
130 | sc->mii_pdata = mii; |
131 | sc->mii_flags = ma->mii_flags; |
132 | sc->mii_anegticks = MII_ANEGTICKS; |
133 | |
134 | PHY_RESET(sc); |
135 | |
136 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
137 | aprint_normal_dev(self, "" ); |
138 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
139 | aprint_error("no media present" ); |
140 | else |
141 | mii_phy_add_media(sc); |
142 | aprint_normal("\n" ); |
143 | } |
144 | |
145 | static int |
146 | iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
147 | { |
148 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
149 | int reg; |
150 | |
151 | switch (cmd) { |
152 | case MII_POLLSTAT: |
153 | /* |
154 | * If we're not polling our PHY instance, just return. |
155 | */ |
156 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
157 | return (0); |
158 | break; |
159 | |
160 | case MII_MEDIACHG: |
161 | /* |
162 | * If the media indicates a different PHY instance, |
163 | * isolate ourselves. |
164 | */ |
165 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
166 | reg = PHY_READ(sc, MII_BMCR); |
167 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
168 | return (0); |
169 | } |
170 | |
171 | /* |
172 | * If the interface is not up, don't do anything. |
173 | */ |
174 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
175 | break; |
176 | |
177 | mii_phy_setmedia(sc); |
178 | break; |
179 | |
180 | case MII_TICK: |
181 | /* |
182 | * If we're not currently selected, just return. |
183 | */ |
184 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
185 | return (0); |
186 | |
187 | if (mii_phy_tick(sc) == EJUSTRETURN) |
188 | return (0); |
189 | break; |
190 | |
191 | case MII_DOWN: |
192 | mii_phy_down(sc); |
193 | return (0); |
194 | } |
195 | |
196 | /* Update the media status. */ |
197 | mii_phy_status(sc); |
198 | |
199 | /* Callback if something changed. */ |
200 | mii_phy_update(sc, cmd); |
201 | return (0); |
202 | } |
203 | |
204 | static void |
205 | iophy_status(struct mii_softc *sc) |
206 | { |
207 | struct mii_data *mii = sc->mii_pdata; |
208 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
209 | int bmsr, bmcr, ext0; |
210 | |
211 | mii->mii_media_status = IFM_AVALID; |
212 | mii->mii_media_active = IFM_ETHER; |
213 | |
214 | bmsr = PHY_READ(sc, MII_BMSR) | |
215 | PHY_READ(sc, MII_BMSR); |
216 | if (bmsr & BMSR_LINK) |
217 | mii->mii_media_status |= IFM_ACTIVE; |
218 | |
219 | bmcr = PHY_READ(sc, MII_BMCR); |
220 | if (bmcr & BMCR_ISO) { |
221 | mii->mii_media_active |= IFM_NONE; |
222 | mii->mii_media_status = 0; |
223 | return; |
224 | } |
225 | |
226 | if (bmcr & BMCR_LOOP) |
227 | mii->mii_media_active |= IFM_LOOP; |
228 | |
229 | if (bmcr & BMCR_AUTOEN) { |
230 | if ((bmsr & BMSR_ACOMP) == 0) { |
231 | /* Erg, still trying, I guess... */ |
232 | mii->mii_media_active |= IFM_NONE; |
233 | return; |
234 | } |
235 | ext0 = PHY_READ(sc, MII_IOPHY_EXT0); |
236 | |
237 | if (ext0 & EXT0_SPEED) { |
238 | if ((bmsr & BMSR_100TXFDX) || (bmsr & BMSR_100TXHDX)) { |
239 | mii->mii_media_active |= IFM_100_TX; |
240 | } else if (bmsr & BMSR_100T4) { |
241 | mii->mii_media_active |= IFM_100_T4; |
242 | } |
243 | } else |
244 | mii->mii_media_active |= IFM_10_T; |
245 | |
246 | if (ext0 & EXT0_DUPLEX) |
247 | mii->mii_media_active |= IFM_FDX; |
248 | else |
249 | mii->mii_media_active |= IFM_HDX; |
250 | } else |
251 | mii->mii_media_active = ife->ifm_media; |
252 | } |
253 | |