Annotation of sys/dev/mii/ukphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ukphy.c,v 1.18 2006/03/05 01:11:37 brad Exp $ */
2: /* $NetBSD: ukphy.c,v 1.9 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, 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 generic unknown 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: #include <sys/errno.h>
80:
81: #include <net/if.h>
82: #include <net/if_media.h>
83:
84: #include <dev/mii/mii.h>
85: #include <dev/mii/miivar.h>
86:
87: int ukphymatch(struct device *, void *, void *);
88: void ukphyattach(struct device *, struct device *, void *);
89:
90: struct cfattach ukphy_ca = {
91: sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach,
92: mii_phy_activate
93: };
94:
95: struct cfdriver ukphy_cd = {
96: NULL, "ukphy", DV_DULL
97: };
98:
99: int ukphy_service(struct mii_softc *, struct mii_data *, int);
100:
101: const struct mii_phy_funcs ukphy_funcs = {
102: ukphy_service, ukphy_status, mii_phy_reset,
103: };
104:
105: int
106: ukphymatch(struct device *parent, void *match, void *aux)
107: {
108:
109: /*
110: * We know something is here, so always match at a low priority.
111: */
112: return (1);
113: }
114:
115: void
116: ukphyattach(struct device *parent, struct device *self, void *aux)
117: {
118: struct mii_softc *sc = (struct mii_softc *)self;
119: struct mii_attach_args *ma = aux;
120: struct mii_data *mii = ma->mii_data;
121:
122: printf(": Generic IEEE 802.3u media interface, rev. %d:",
123: MII_REV(ma->mii_id2));
124: printf(" OUI 0x%06x, model 0x%04x\n",
125: MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2));
126:
127: sc->mii_inst = mii->mii_instance;
128: sc->mii_phy = ma->mii_phyno;
129: sc->mii_funcs = &ukphy_funcs;
130: sc->mii_pdata = mii;
131: sc->mii_flags = ma->mii_flags;
132:
133: /*
134: * Don't do loopback on unknown PHYs. It might confuse some of them.
135: */
136: sc->mii_flags |= MIIF_NOLOOP;
137:
138: PHY_RESET(sc);
139:
140: sc->mii_capabilities =
141: 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: if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
145: (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
146: printf("%s: no media present\n", sc->mii_dev.dv_xname);
147: else
148: mii_phy_add_media(sc);
149: }
150:
151: int
152: ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
153: {
154: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
155: int reg;
156:
157: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
158: return (ENXIO);
159:
160: switch (cmd) {
161: case MII_POLLSTAT:
162: /*
163: * If we're not polling our PHY instance, just return.
164: */
165: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
166: return (0);
167: break;
168:
169: case MII_MEDIACHG:
170: /*
171: * If the media indicates a different PHY instance,
172: * isolate ourselves.
173: */
174: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
175: reg = PHY_READ(sc, MII_BMCR);
176: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
177: return (0);
178: }
179:
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: /*
191: * If we're not currently selected, just return.
192: */
193: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
194: return (0);
195:
196: if (mii_phy_tick(sc) == EJUSTRETURN)
197: return (0);
198: break;
199:
200: case MII_DOWN:
201: mii_phy_down(sc);
202: return (0);
203: }
204:
205: /* Update the media status. */
206: mii_phy_status(sc);
207:
208: /* Callback if something changed. */
209: mii_phy_update(sc, cmd);
210: return (0);
211: }
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