Annotation of sys/dev/mii/tqphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: tqphy.c,v 1.11 2006/12/27 19:11:09 kettenis Exp $ */
2: /* $NetBSD: tqphy.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.
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: * TDK TSC78Q2120 PHY driver
72: *
73: * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf .
74: */
75:
76: #include <sys/param.h>
77: #include <sys/systm.h>
78: #include <sys/kernel.h>
79: #include <sys/device.h>
80: #include <sys/socket.h>
81:
82: #include <net/if.h>
83: #include <net/if_media.h>
84:
85: #include <dev/mii/mii.h>
86: #include <dev/mii/miivar.h>
87: #include <dev/mii/miidevs.h>
88:
89: #include <dev/mii/tqphyreg.h>
90:
91: int tqphymatch(struct device *, void *, void *);
92: void tqphyattach(struct device *, struct device *, void *);
93: int tqphydetach(struct device *, int);
94:
95: struct cfattach tqphy_ca = {
96: sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach,
97: mii_phy_activate
98: };
99:
100: struct cfdriver tqphy_cd = {
101: NULL, "tqphy", DV_DULL
102: };
103:
104: int tqphy_service(struct mii_softc *, struct mii_data *, int);
105: void tqphy_status(struct mii_softc *);
106:
107: const struct mii_phy_funcs tqphy_funcs = {
108: tqphy_service, tqphy_status, mii_phy_reset,
109: };
110:
111: static const struct mii_phydesc tqphys[] = {
112: { MII_OUI_TSC, MII_MODEL_TSC_78Q2120,
113: MII_STR_TSC_78Q2120 },
114:
115: { 0, 0,
116: NULL },
117: };
118:
119: int
120: tqphymatch(struct device *parent, void *match, void *aux)
121: {
122: struct mii_attach_args *ma = aux;
123:
124: if (mii_phy_match(ma, tqphys) != NULL)
125: return (10);
126:
127: return (0);
128: }
129:
130: void
131: tqphyattach(struct device *parent, struct device *self, void *aux)
132: {
133: struct mii_softc *sc = (struct mii_softc *)self;
134: struct mii_attach_args *ma = aux;
135: struct mii_data *mii = ma->mii_data;
136: const struct mii_phydesc *mpd;
137:
138: mpd = mii_phy_match(ma, tqphys);
139: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
140:
141: sc->mii_inst = mii->mii_instance;
142: sc->mii_phy = ma->mii_phyno;
143: sc->mii_funcs = &tqphy_funcs;
144: sc->mii_pdata = mii;
145: sc->mii_flags = ma->mii_flags;
146:
147: /*
148: * Apparently, we can't do loopback on this PHY.
149: */
150: sc->mii_flags |= MIIF_NOLOOP;
151:
152: PHY_RESET(sc);
153:
154: sc->mii_capabilities =
155: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
156: if (sc->mii_capabilities & BMSR_MEDIAMASK)
157: mii_phy_add_media(sc);
158: }
159:
160: int
161: tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
162: {
163: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
164: int reg;
165:
166: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
167: return (ENXIO);
168:
169: switch (cmd) {
170: case MII_POLLSTAT:
171: /*
172: * If we're not polling our PHY instance, just return.
173: */
174: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
175: return (0);
176: break;
177:
178: case MII_MEDIACHG:
179: /*
180: * If the media indicates a different PHY instance,
181: * isolate ourselves.
182: */
183: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
184: reg = PHY_READ(sc, MII_BMCR);
185: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
186: return (0);
187: }
188:
189: /*
190: * If the interface is not up, don't do anything.
191: */
192: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
193: break;
194:
195: mii_phy_setmedia(sc);
196: break;
197:
198: case MII_TICK:
199: /*
200: * If we're not currently selected, just return.
201: */
202: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
203: return (0);
204:
205: if (mii_phy_tick(sc) == EJUSTRETURN)
206: return (0);
207: break;
208:
209: case MII_DOWN:
210: mii_phy_down(sc);
211: return (0);
212: }
213:
214: /* Update the media status. */
215: mii_phy_status(sc);
216:
217: /* Callback if something changed. */
218: mii_phy_update(sc, cmd);
219: return (0);
220: }
221:
222: void
223: tqphy_status(struct mii_softc *sc)
224: {
225: struct mii_data *mii = sc->mii_pdata;
226: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
227: int bmsr, bmcr, diag;
228:
229: mii->mii_media_status = IFM_AVALID;
230: mii->mii_media_active = IFM_ETHER;
231:
232: bmsr = PHY_READ(sc, MII_BMSR) |
233: PHY_READ(sc, MII_BMSR);
234: if (bmsr & BMSR_LINK)
235: mii->mii_media_status |= IFM_ACTIVE;
236:
237: bmcr = PHY_READ(sc, MII_BMCR);
238: if (bmcr & BMCR_ISO) {
239: mii->mii_media_active |= IFM_NONE;
240: mii->mii_media_status = 0;
241: return;
242: }
243:
244: if (bmcr & BMCR_LOOP)
245: mii->mii_media_active |= IFM_LOOP;
246:
247: if (bmcr & BMCR_AUTOEN) {
248: if ((bmsr & BMSR_ACOMP) == 0) {
249: /* Erg, still trying, I guess... */
250: mii->mii_media_active |= IFM_NONE;
251: return;
252: }
253: diag = PHY_READ(sc, MII_TQPHY_DIAG);
254: if (diag & DIAG_RATE)
255: mii->mii_media_active |= IFM_100_TX;
256: else
257: mii->mii_media_active |= IFM_10_T;
258:
259: if (diag & DIAG_DPLX)
260: mii->mii_media_active |= IFM_FDX;
261: else
262: mii->mii_media_active |= IFM_HDX;
263: } else
264: mii->mii_media_active = ife->ifm_media;
265: }
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