Annotation of sys/dev/mii/luphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: luphy.c,v 1.3 2005/04/15 00:44:39 brad Exp $ */
2:
3: /*-
4: * Copyright (c) 2004 Marius Strobl
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26: * SUCH DAMAGE.
27: */
28:
29: /*
30: * Driver for the Lucent Technologies LU6612 Ethernet 10/100 PHY, which
31: * is pin-compatible to the Quality Semiconductor QS6612 but uses a
32: * different register layout. Sun Microsystems uses the LU6612 together
33: * with their HME chip on a couple of bords originally designed for the
34: * QS6612. At least on these boards none of the LU6612 must be isolated
35: * otherwise the MII bus wedges and the other one (there can be a maximum
36: * of two PHYs connected to the HME) no longer can communicate with the
37: * HME (powering down the unused PHY etc. also doesn't help). This is
38: * why we can't use the ukphy driver for the LU6612.
39: * The datasheet for the LU6612 is no longer available on lucent.com or
40: * www.agere.com (former Lucent Microelectronics Group) but you still
41: * should be able to find it when searching for DS00355.pdf or LU6612.pdf.
42: */
43:
44: #include <sys/param.h>
45: #include <sys/systm.h>
46: #include <sys/kernel.h>
47: #include <sys/device.h>
48: #include <sys/socket.h>
49:
50: #include <net/if.h>
51: #include <net/if_media.h>
52:
53: #include <dev/mii/mii.h>
54: #include <dev/mii/miivar.h>
55: #include <dev/mii/miidevs.h>
56:
57: int luphymatch(struct device *, void *, void *);
58: void luphyattach(struct device *, struct device *, void *);
59:
60: struct cfattach luphy_ca = {
61: sizeof(struct mii_softc), luphymatch, luphyattach, mii_phy_detach,
62: mii_phy_activate
63: };
64:
65: struct cfdriver luphy_cd = {
66: NULL, "luphy", DV_DULL
67: };
68:
69: int luphy_service(struct mii_softc *, struct mii_data *, int);
70:
71: const struct mii_phy_funcs luphy_funcs = {
72: luphy_service, ukphy_status, mii_phy_reset,
73: };
74:
75: static const struct mii_phydesc luphys[] = {
76: { MII_OUI_LUCENT, MII_MODEL_LUCENT_LU6612,
77: MII_STR_LUCENT_LU6612 },
78:
79: { 0, 0,
80: NULL },
81: };
82:
83: int
84: luphymatch(struct device *parent, void *match, void *aux)
85: {
86: struct mii_attach_args *ma = aux;
87:
88: if (mii_phy_match(ma, luphys) != NULL)
89: return (10);
90:
91: return (0);
92: }
93:
94: void
95: luphyattach(struct device *parent, struct device *self, void *aux)
96: {
97: struct mii_softc *sc = (struct mii_softc *)self;
98: struct mii_attach_args *ma = aux;
99: struct mii_data *mii = ma->mii_data;
100: const struct mii_phydesc *mpd;
101:
102: mpd = mii_phy_match(ma, luphys);
103: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
104:
105: sc->mii_inst = mii->mii_instance;
106: sc->mii_phy = ma->mii_phyno;
107: sc->mii_funcs = &luphy_funcs;
108: sc->mii_pdata = mii;
109: sc->mii_flags = ma->mii_flags;
110:
111: sc->mii_flags |= MIIF_NOISOLATE;
112:
113: PHY_RESET(sc);
114:
115: sc->mii_capabilities =
116: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
117: if (sc->mii_capabilities & BMSR_MEDIAMASK)
118: mii_phy_add_media(sc);
119: }
120:
121: int
122: luphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
123: {
124: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
125:
126: switch (cmd) {
127: case MII_POLLSTAT:
128: /*
129: * If we're not polling our PHY instance, just return.
130: */
131: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
132: return (0);
133: break;
134:
135: case MII_MEDIACHG:
136: /*
137: * If the media indicates a different PHY instance,
138: * just return. Isolating unused PHYs from the bus
139: * causes at least the MII bus of the HME to wedge.
140: */
141: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
142: return (0);
143:
144: /*
145: * If the interface is not up, don't do anything.
146: */
147: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
148: break;
149:
150: mii_phy_setmedia(sc);
151: break;
152:
153: case MII_TICK:
154: /*
155: * If we're not currently selected, just return.
156: */
157: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
158: return (0);
159:
160: if (mii_phy_tick(sc) == EJUSTRETURN)
161: return (0);
162: break;
163:
164: case MII_DOWN:
165: mii_phy_down(sc);
166: return (0);
167: }
168:
169: /* Update the media status. */
170: mii_phy_status(sc);
171:
172: /* Callback if something changed. */
173: mii_phy_update(sc, cmd);
174: return (0);
175: }
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