1 | /* $NetBSD: acphy.c,v 1.25 2016/07/07 06:55:41 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2001 Wasabi Systems, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. All advertising materials mentioning features or use of this software |
18 | * must display the following acknowledgement: |
19 | * This product includes software developed for the NetBSD Project by |
20 | * Wasabi Systems, Inc. |
21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
22 | * or promote products derived from this software without specific prior |
23 | * written permission. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
35 | * POSSIBILITY OF SUCH DAMAGE. |
36 | */ |
37 | |
38 | /* |
39 | * Driver for the Altima AC101 PHY. |
40 | */ |
41 | |
42 | #include <sys/cdefs.h> |
43 | __KERNEL_RCSID(0, "$NetBSD: acphy.c,v 1.25 2016/07/07 06:55:41 msaitoh Exp $" ); |
44 | |
45 | #include <sys/param.h> |
46 | #include <sys/systm.h> |
47 | #include <sys/kernel.h> |
48 | #include <sys/device.h> |
49 | #include <sys/socket.h> |
50 | #include <sys/errno.h> |
51 | |
52 | #include <net/if.h> |
53 | #include <net/if_media.h> |
54 | |
55 | #include <dev/mii/mii.h> |
56 | #include <dev/mii/miivar.h> |
57 | #include <dev/mii/miidevs.h> |
58 | |
59 | #include <dev/mii/acphyreg.h> |
60 | |
61 | static int acphymatch(device_t, cfdata_t, void *); |
62 | static void acphyattach(device_t, device_t, void *); |
63 | |
64 | CFATTACH_DECL_NEW(acphy, sizeof(struct mii_softc), |
65 | acphymatch, acphyattach, mii_phy_detach, mii_phy_activate); |
66 | |
67 | static int acphy_service(struct mii_softc *, struct mii_data *, int); |
68 | static void acphy_status(struct mii_softc *); |
69 | |
70 | static const struct mii_phy_funcs acphy_funcs = { |
71 | acphy_service, acphy_status, mii_phy_reset, |
72 | }; |
73 | |
74 | static const struct mii_phydesc acphys[] = { |
75 | { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101, |
76 | MII_STR_ALTIMA_AC101 }, |
77 | { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101L, |
78 | MII_STR_ALTIMA_AC101L }, |
79 | { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_Am79C874, |
80 | MII_STR_ALTIMA_Am79C874 }, |
81 | { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_Am79C875, |
82 | MII_STR_ALTIMA_Am79C875 }, |
83 | |
84 | /* XXX This is reported to work, but it's not from any data sheet. */ |
85 | { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_ACXXX, |
86 | MII_STR_ALTIMA_ACXXX }, |
87 | |
88 | { 0, 0, |
89 | NULL }, |
90 | }; |
91 | |
92 | static int |
93 | acphymatch(device_t parent, cfdata_t match, void *aux) |
94 | { |
95 | struct mii_attach_args *ma = aux; |
96 | |
97 | if (mii_phy_match(ma, acphys) != NULL) |
98 | return (10); |
99 | |
100 | return (0); |
101 | } |
102 | |
103 | static void |
104 | acphyattach(device_t parent, device_t self, void *aux) |
105 | { |
106 | struct mii_softc *sc = device_private(self); |
107 | struct mii_attach_args *ma = aux; |
108 | struct mii_data *mii = ma->mii_data; |
109 | const struct mii_phydesc *mpd; |
110 | |
111 | mpd = mii_phy_match(ma, acphys); |
112 | aprint_naive(": Media interface\n" ); |
113 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
114 | |
115 | sc->mii_dev = self; |
116 | sc->mii_inst = mii->mii_instance; |
117 | sc->mii_phy = ma->mii_phyno; |
118 | sc->mii_funcs = &acphy_funcs; |
119 | sc->mii_pdata = mii; |
120 | sc->mii_flags = ma->mii_flags; |
121 | sc->mii_anegticks = MII_ANEGTICKS; |
122 | |
123 | PHY_RESET(sc); |
124 | |
125 | /* |
126 | * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? |
127 | */ |
128 | |
129 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
130 | aprint_normal_dev(sc->mii_dev, "" ); |
131 | |
132 | #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) |
133 | if (sc->mii_flags & MIIF_HAVEFIBER) { |
134 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), |
135 | MII_MEDIA_100_TX); |
136 | aprint_normal("100baseFX, " ); |
137 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), |
138 | MII_MEDIA_100_TX); |
139 | aprint_normal("100baseFX-FDX, " ); |
140 | } |
141 | #undef ADD |
142 | |
143 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
144 | aprint_error("no media present" ); |
145 | else |
146 | mii_phy_add_media(sc); |
147 | aprint_normal("\n" ); |
148 | } |
149 | |
150 | static int |
151 | acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
152 | { |
153 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
154 | int reg; |
155 | |
156 | switch (cmd) { |
157 | case MII_POLLSTAT: |
158 | /* |
159 | * If we're not polling our PHY instance, just return. |
160 | */ |
161 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
162 | return (0); |
163 | break; |
164 | |
165 | case MII_MEDIACHG: |
166 | /* |
167 | * If the media indicates a different PHY instance, |
168 | * isolate ourselves. |
169 | */ |
170 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
171 | reg = PHY_READ(sc, MII_BMCR); |
172 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
173 | return (0); |
174 | } |
175 | |
176 | /* |
177 | * If the interface is not up, don't do anything. |
178 | */ |
179 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
180 | break; |
181 | |
182 | mii_phy_setmedia(sc); |
183 | break; |
184 | |
185 | case MII_TICK: |
186 | /* |
187 | * If we're not currently selected, just return. |
188 | */ |
189 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
190 | return (0); |
191 | |
192 | if (mii_phy_tick(sc) == EJUSTRETURN) |
193 | return (0); |
194 | break; |
195 | |
196 | case MII_DOWN: |
197 | mii_phy_down(sc); |
198 | return (0); |
199 | } |
200 | |
201 | /* Update the media status. */ |
202 | mii_phy_status(sc); |
203 | |
204 | /* Callback if something changed. */ |
205 | mii_phy_update(sc, cmd); |
206 | return (0); |
207 | } |
208 | |
209 | static void |
210 | acphy_status(struct mii_softc *sc) |
211 | { |
212 | struct mii_data *mii = sc->mii_pdata; |
213 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
214 | int bmsr, bmcr, dr; |
215 | |
216 | mii->mii_media_status = IFM_AVALID; |
217 | mii->mii_media_active = IFM_ETHER; |
218 | |
219 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
220 | dr = PHY_READ(sc, MII_ACPHY_DR); |
221 | |
222 | if (bmsr & BMSR_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 if autonegotiation |
238 | * has completed (or it's disabled). |
239 | */ |
240 | if ((bmsr & BMSR_ACOMP) == 0) { |
241 | /* Erg, still trying, I guess... */ |
242 | mii->mii_media_active |= IFM_NONE; |
243 | return; |
244 | } |
245 | |
246 | if (dr & DR_SPEED) |
247 | mii->mii_media_active |= IFM_100_TX; |
248 | else |
249 | mii->mii_media_active |= IFM_10_T; |
250 | |
251 | if (dr & DR_DPLX) |
252 | mii->mii_media_active |= IFM_FDX; |
253 | else |
254 | mii->mii_media_active |= IFM_HDX; |
255 | } else |
256 | mii->mii_media_active = ife->ifm_media; |
257 | } |
258 | |