Annotation of sys/dev/mii/exphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: exphy.c,v 1.18 2005/02/04 23:23:56 brad Exp $ */
2: /* $NetBSD: exphy.c,v 1.23 2000/02/02 23:34:56 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, and by Frank van der Linden.
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: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the NetBSD
23: * Foundation, Inc. and its contributors.
24: * 4. Neither the name of The NetBSD Foundation nor the names of its
25: * contributors may be used to endorse or promote products derived
26: * from this software without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38: * POSSIBILITY OF SUCH DAMAGE.
39: */
40:
41: /*
42: * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43: *
44: * Redistribution and use in source and binary forms, with or without
45: * modification, are permitted provided that the following conditions
46: * are met:
47: * 1. Redistributions of source code must retain the above copyright
48: * notice, this list of conditions and the following disclaimer.
49: * 2. Redistributions in binary form must reproduce the above copyright
50: * notice, this list of conditions and the following disclaimer in the
51: * documentation and/or other materials provided with the distribution.
52: * 3. All advertising materials mentioning features or use of this software
53: * must display the following acknowledgement:
54: * This product includes software developed by Manuel Bouyer.
55: * 4. The name of the author may not be used to endorse or promote products
56: * derived from this software without specific prior written permission.
57: *
58: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68: */
69:
70: /*
71: * driver for 3Com internal PHYs
72: */
73:
74: #include <sys/param.h>
75: #include <sys/systm.h>
76: #include <sys/kernel.h>
77: #include <sys/device.h>
78: #include <sys/socket.h>
79:
80: #include <net/if.h>
81: #include <net/if_media.h>
82:
83: #include <dev/mii/mii.h>
84: #include <dev/mii/miivar.h>
85: #include <dev/mii/miidevs.h>
86:
87: int exphymatch(struct device *, void *, void *);
88: void exphyattach(struct device *, struct device *, void *);
89:
90: struct cfattach exphy_ca = {
91: sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach,
92: mii_phy_activate
93: };
94:
95: struct cfdriver exphy_cd = {
96: NULL, "exphy", DV_DULL
97: };
98:
99: int exphy_service(struct mii_softc *, struct mii_data *, int);
100: void exphy_reset(struct mii_softc *);
101:
102: const struct mii_phy_funcs exphy_funcs = {
103: exphy_service, ukphy_status, exphy_reset,
104: };
105:
106: int
107: exphymatch(struct device *parent, void *match, void *aux)
108: {
109: struct mii_attach_args *ma = aux;
110:
111: /*
112: * Since 3com's PHY for some xl adapters is braindead and doesn't
113: * report the proper OUI/MODEL information, we have this stupid
114: * match function.
115: */
116: if ((strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") == 0) &&
117: ((MII_OUI(ma->mii_id1, ma->mii_id2) == 0 &&
118: MII_MODEL(ma->mii_id2) == 0) ||
119: (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_3COM &&
120: MII_MODEL(ma->mii_id2) == 0)))
121: return (10);
122:
123: return (0);
124: }
125:
126: void
127: exphyattach(struct device *parent, struct device *self, void *aux)
128: {
129: struct mii_softc *sc = (struct mii_softc *)self;
130: struct mii_attach_args *ma = aux;
131: struct mii_data *mii = ma->mii_data;
132:
133: printf(": 3Com internal media interface\n");
134:
135: sc->mii_inst = mii->mii_instance;
136: sc->mii_phy = ma->mii_phyno;
137: sc->mii_funcs = &exphy_funcs;
138: sc->mii_pdata = mii;
139: sc->mii_flags = ma->mii_flags;
140:
141: sc->mii_flags |= MIIF_NOISOLATE;
142:
143: /*
144: * The 3Com PHY can never be isolated, so never allow non-zero
145: * instances!
146: */
147: if (mii->mii_instance != 0) {
148: printf("%s: ignoring this PHY, non-zero instance\n",
149: sc->mii_dev.dv_xname);
150: return;
151: }
152:
153: PHY_RESET(sc);
154:
155: sc->mii_capabilities =
156: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
157: if (sc->mii_capabilities & BMSR_MEDIAMASK)
158: mii_phy_add_media(sc);
159: }
160:
161: int
162: exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
163: {
164: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
165:
166: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
167: return (ENXIO);
168:
169: /*
170: * We can't isolate the 3Com PHY, so it has to be the only one!
171: */
172: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
173: panic("exphy_service: can't isolate 3Com PHY");
174:
175: switch (cmd) {
176: case MII_POLLSTAT:
177: break;
178:
179: case MII_MEDIACHG:
180: /*
181: * If the interface is not up, don't do anything.
182: */
183: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
184: break;
185:
186: mii_phy_setmedia(sc);
187: break;
188:
189: case MII_TICK:
190: if (mii_phy_tick(sc) == EJUSTRETURN)
191: return (0);
192:
193: break;
194:
195: case MII_DOWN:
196: mii_phy_down(sc);
197: return (0);
198: }
199:
200: /* Update the media status. */
201: mii_phy_status(sc);
202:
203: /* Callback if something changed. */
204: mii_phy_update(sc, cmd);
205: return (0);
206: }
207:
208: void
209: exphy_reset(struct mii_softc *sc)
210: {
211:
212: mii_phy_reset(sc);
213:
214: /*
215: * XXX 3Com PHY doesn't set the BMCR properly after
216: * XXX reset, which breaks autonegotiation.
217: */
218: PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
219: }
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