Line data Source code
1 : /* $OpenBSD: lxtphy.c,v 1.20 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp $ */
3 :
4 : /*-
5 : * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
6 : * All rights reserved.
7 : *
8 : * This code is derived from software contributed to The NetBSD Foundation
9 : * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 : * NASA Ames Research Center.
11 : *
12 : * Redistribution and use in source and binary forms, with or without
13 : * modification, are permitted provided that the following conditions
14 : * are met:
15 : * 1. Redistributions of source code must retain the above copyright
16 : * notice, this list of conditions and the following disclaimer.
17 : * 2. Redistributions in binary form must reproduce the above copyright
18 : * notice, this list of conditions and the following disclaimer in the
19 : * documentation and/or other materials provided with the distribution.
20 : *
21 : * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 : * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 : * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 : * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 : * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 : * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 : * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 : * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 : * POSSIBILITY OF SUCH DAMAGE.
32 : */
33 :
34 : /*
35 : * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 : *
37 : * Redistribution and use in source and binary forms, with or without
38 : * modification, are permitted provided that the following conditions
39 : * are met:
40 : * 1. Redistributions of source code must retain the above copyright
41 : * notice, this list of conditions and the following disclaimer.
42 : * 2. Redistributions in binary form must reproduce the above copyright
43 : * notice, this list of conditions and the following disclaimer in the
44 : * documentation and/or other materials provided with the distribution.
45 : *
46 : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 : * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 : * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 : * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 : * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 : */
57 :
58 : /*
59 : * driver for Level One's LXT-970/971 ethernet 10/100 PHY
60 : * datasheet from www.level1.com
61 : */
62 :
63 : #include <sys/param.h>
64 : #include <sys/systm.h>
65 : #include <sys/device.h>
66 : #include <sys/socket.h>
67 : #include <sys/errno.h>
68 :
69 : #include <net/if.h>
70 : #include <net/if_var.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/lxtphyreg.h>
78 :
79 : int lxtphymatch(struct device *, void *, void *);
80 : void lxtphyattach(struct device *, struct device *, void *);
81 :
82 : struct cfattach lxtphy_ca = {
83 : sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach
84 : };
85 :
86 : struct cfdriver lxtphy_cd = {
87 : NULL, "lxtphy", DV_DULL
88 : };
89 :
90 : int lxtphy_service(struct mii_softc *, struct mii_data *, int);
91 : void lxtphy_status(struct mii_softc *);
92 : void lxtphy_reset(struct mii_softc *);
93 :
94 : const struct mii_phy_funcs lxtphy_funcs = {
95 : lxtphy_service, lxtphy_status, lxtphy_reset,
96 : };
97 :
98 : const struct mii_phy_funcs lxtphy971_funcs = {
99 : lxtphy_service, ukphy_status, lxtphy_reset,
100 : };
101 :
102 : static const struct mii_phydesc lxtphys[] = {
103 : { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970,
104 : MII_STR_xxLEVEL1_LXT970 },
105 : { MII_OUI_xxLEVEL1a, MII_MODEL_xxLEVEL1a_LXT971,
106 : MII_STR_xxLEVEL1a_LXT971 },
107 :
108 : { 0, 0,
109 : NULL },
110 : };
111 :
112 : int
113 0 : lxtphymatch(parent, match, aux)
114 : struct device *parent;
115 : void *match;
116 : void *aux;
117 : {
118 0 : struct mii_attach_args *ma = aux;
119 :
120 0 : if (mii_phy_match(ma, lxtphys) != NULL)
121 0 : return (10);
122 :
123 0 : return (0);
124 0 : }
125 :
126 : void
127 0 : lxtphyattach(parent, self, aux)
128 : struct device *parent, *self;
129 : void *aux;
130 : {
131 0 : struct mii_softc *sc = (struct mii_softc *)self;
132 0 : struct mii_attach_args *ma = aux;
133 0 : struct mii_data *mii = ma->mii_data;
134 : const struct mii_phydesc *mpd;
135 :
136 0 : if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 &&
137 0 : MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) {
138 0 : sc->mii_funcs = &lxtphy_funcs;
139 0 : }
140 0 : if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1a &&
141 0 : MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1a_LXT971) {
142 0 : sc->mii_funcs = &lxtphy971_funcs;
143 0 : }
144 :
145 0 : mpd = mii_phy_match(ma, lxtphys);
146 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
147 :
148 0 : sc->mii_inst = mii->mii_instance;
149 0 : sc->mii_phy = ma->mii_phyno;
150 0 : sc->mii_pdata = mii;
151 0 : sc->mii_flags = ma->mii_flags;
152 :
153 0 : PHY_RESET(sc);
154 :
155 0 : sc->mii_capabilities =
156 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
157 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
158 0 : mii_phy_add_media(sc);
159 0 : }
160 :
161 : int
162 0 : lxtphy_service(sc, mii, cmd)
163 : struct mii_softc *sc;
164 : struct mii_data *mii;
165 : int cmd;
166 : {
167 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
168 : int reg;
169 :
170 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
171 0 : return (ENXIO);
172 :
173 0 : switch (cmd) {
174 : case MII_POLLSTAT:
175 : /*
176 : * If we're not polling our PHY instance, just return.
177 : */
178 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
179 0 : return (0);
180 : break;
181 :
182 : case MII_MEDIACHG:
183 : /*
184 : * If the media indicates a different PHY instance,
185 : * isolate ourselves.
186 : */
187 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
188 0 : reg = PHY_READ(sc, MII_BMCR);
189 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
190 0 : return (0);
191 : }
192 :
193 : /*
194 : * If the interface is not up, don't do anything.
195 : */
196 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
197 : break;
198 :
199 0 : mii_phy_setmedia(sc);
200 0 : break;
201 :
202 : case MII_TICK:
203 : /*
204 : * If we're not currently selected, just return.
205 : */
206 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
207 0 : return (0);
208 :
209 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
210 0 : return (0);
211 : break;
212 :
213 : case MII_DOWN:
214 0 : mii_phy_down(sc);
215 0 : return (0);
216 : }
217 :
218 : /* Update the media status. */
219 0 : mii_phy_status(sc);
220 :
221 : /* Callback if something changed. */
222 0 : mii_phy_update(sc, cmd);
223 0 : return (0);
224 0 : }
225 :
226 : void
227 0 : lxtphy_status(sc)
228 : struct mii_softc *sc;
229 : {
230 0 : struct mii_data *mii = sc->mii_pdata;
231 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
232 : int bmcr, bmsr, csr;
233 :
234 0 : mii->mii_media_status = IFM_AVALID;
235 0 : mii->mii_media_active = IFM_ETHER;
236 :
237 : /*
238 : * Get link status from the CSR; we need to read the CSR
239 : * for media type anyhow, and the link status in the CSR
240 : * doens't latch, so fewer register reads are required.
241 : */
242 0 : csr = PHY_READ(sc, MII_LXTPHY_CSR);
243 0 : if (csr & CSR_LINK)
244 0 : mii->mii_media_status |= IFM_ACTIVE;
245 :
246 0 : bmcr = PHY_READ(sc, MII_BMCR);
247 0 : if (bmcr & BMCR_ISO) {
248 0 : mii->mii_media_active |= IFM_NONE;
249 0 : mii->mii_media_status = 0;
250 0 : return;
251 : }
252 :
253 0 : if (bmcr & BMCR_LOOP)
254 0 : mii->mii_media_active |= IFM_LOOP;
255 :
256 0 : if (bmcr & BMCR_AUTOEN) {
257 0 : bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
258 0 : if ((bmsr & BMSR_ACOMP) == 0) {
259 : /* Erg, still trying, I guess... */
260 0 : mii->mii_media_active |= IFM_NONE;
261 0 : return;
262 : }
263 0 : if (csr & CSR_SPEED)
264 0 : mii->mii_media_active |= IFM_100_TX;
265 : else
266 0 : mii->mii_media_active |= IFM_10_T;
267 :
268 0 : if (csr & CSR_DUPLEX)
269 0 : mii->mii_media_active |= IFM_FDX;
270 : else
271 0 : mii->mii_media_active |= IFM_HDX;
272 : } else
273 0 : mii->mii_media_active = ife->ifm_media;
274 0 : }
275 :
276 : void
277 0 : lxtphy_reset(sc)
278 : struct mii_softc *sc;
279 : {
280 0 : mii_phy_reset(sc);
281 0 : PHY_WRITE(sc, MII_LXTPHY_IER,
282 : PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
283 0 : }
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