Annotation of sys/dev/mii/mtdphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mtdphy.c,v 1.12 2005/02/19 06:00:04 brad Exp $ */
2:
3: /*
4: * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net)
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 ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26: * POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: /*
30: * Driver for the Myson Technology MTD972 100BaseTX PCS/PMA.
31: */
32:
33: #include <sys/param.h>
34: #include <sys/systm.h>
35: #include <sys/kernel.h>
36: #include <sys/device.h>
37: #include <sys/socket.h>
38: #include <sys/errno.h>
39:
40: #include <net/if.h>
41: #include <net/if_media.h>
42:
43: #include <dev/mii/mii.h>
44: #include <dev/mii/miivar.h>
45: #include <dev/mii/miidevs.h>
46: #include <dev/mii/mtdphyreg.h>
47:
48: int mtdphymatch(struct device *, void *, void *);
49: void mtdphyattach(struct device *, struct device *, void *);
50:
51: struct cfattach mtdphy_ca = {
52: sizeof(struct mii_softc), mtdphymatch, mtdphyattach, mii_phy_detach,
53: mii_phy_activate
54: };
55:
56: struct cfdriver mtdphy_cd = {
57: NULL, "mtdphy", DV_DULL
58: };
59:
60: int mtdphy_service(struct mii_softc *, struct mii_data *, int);
61:
62: const struct mii_phy_funcs mtdphy_funcs = {
63: mtdphy_service, ukphy_status, mii_phy_reset,
64: };
65:
66: static const struct mii_phydesc mtdphys[] = {
67: { MII_OUI_MYSON, MII_MODEL_MYSON_MTD972,
68: MII_STR_MYSON_MTD972 },
69:
70: { 0, 0,
71: NULL },
72: };
73:
74: int
75: mtdphymatch(struct device *parent, void *match, void *aux)
76: {
77: struct mii_attach_args *ma = aux;
78:
79: if (mii_phy_match(ma, mtdphys) != NULL)
80: return (10);
81:
82: return (0);
83: }
84:
85: void
86: mtdphyattach(struct device *parent, struct device *self, void *aux)
87: {
88: struct mii_softc *sc = (struct mii_softc *)self;
89: struct mii_attach_args *ma = aux;
90: struct mii_data *mii = ma->mii_data;
91: const struct mii_phydesc *mpd;
92:
93: mpd = mii_phy_match(ma, mtdphys);
94: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
95:
96: sc->mii_inst = mii->mii_instance;
97: sc->mii_phy = ma->mii_phyno;
98: sc->mii_funcs = &mtdphy_funcs;
99: sc->mii_pdata = mii;
100: sc->mii_flags = ma->mii_flags;
101:
102: PHY_RESET(sc);
103:
104: sc->mii_capabilities =
105: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
106: if (sc->mii_capabilities & BMSR_MEDIAMASK)
107: mii_phy_add_media(sc);
108: }
109:
110: int
111: mtdphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
112: {
113: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
114: int reg;
115:
116: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
117: return (ENXIO);
118:
119: switch (cmd) {
120: case MII_POLLSTAT:
121: /*
122: * If we're not polling our PHY instance, just return.
123: */
124: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
125: return (0);
126: break;
127:
128: case MII_MEDIACHG:
129: /*
130: * If the interface is not up, don't do anything.
131: */
132: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
133: reg = PHY_READ(sc, MII_BMCR);
134: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
135: return (0);
136: }
137:
138: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
139: break;
140:
141: mii_phy_setmedia(sc);
142: break;
143:
144: case MII_TICK:
145: /*
146: *If we're not currently selected, just return.
147: */
148: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
149: return (0);
150:
151: if (mii_phy_tick(sc) == EJUSTRETURN)
152: return (0);
153: break;
154:
155: case MII_DOWN:
156: mii_phy_down(sc);
157: return (0);
158: }
159:
160: /* Update the media status. */
161: mii_phy_status(sc);
162:
163: /* Callback if something changed. */
164: mii_phy_update(sc, cmd);
165: return (0);
166: }
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