Annotation of sys/dev/mii/iophy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: iophy.c,v 1.13 2006/12/27 19:11:08 kettenis Exp $ */
2: /* $NetBSD: iophy.c,v 1.8 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.
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: * Intel 82553 PHY driver
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: #include <dev/mii/iophyreg.h>
88:
89: int iophymatch(struct device *, void *, void *);
90: void iophyattach(struct device *, struct device *, void *);
91:
92: struct cfattach iophy_ca = {
93: sizeof(struct mii_softc), iophymatch, iophyattach, mii_phy_detach,
94: mii_phy_activate
95: };
96:
97: struct cfdriver iophy_cd = {
98: NULL, "iophy", DV_DULL
99: };
100:
101: int iophy_service(struct mii_softc *, struct mii_data *, int);
102: void iophy_status(struct mii_softc *);
103:
104: const struct mii_phy_funcs iophy_funcs = {
105: iophy_service, iophy_status, mii_phy_reset,
106: };
107:
108: static const struct mii_phydesc iophys[] = {
109: { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553,
110: MII_STR_xxINTEL_I82553 },
111: { MII_OUI_INTEL, MII_MODEL_INTEL_I82553,
112: MII_STR_INTEL_I82553 },
113:
114: { 0, 0,
115: NULL },
116:
117: };
118:
119: int
120: iophymatch(parent, match, aux)
121: struct device *parent;
122: void *match;
123: void *aux;
124: {
125: struct mii_attach_args *ma = aux;
126:
127: if (mii_phy_match(ma, iophys) != NULL)
128: return (10);
129:
130: return (0);
131: }
132:
133: void
134: iophyattach(parent, self, aux)
135: struct device *parent, *self;
136: void *aux;
137: {
138: struct mii_softc *sc = (struct mii_softc *)self;
139: struct mii_attach_args *ma = aux;
140: struct mii_data *mii = ma->mii_data;
141: const struct mii_phydesc *mpd;
142:
143: mpd = mii_phy_match(ma, iophys);
144: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
145:
146: sc->mii_inst = mii->mii_instance;
147: sc->mii_phy = ma->mii_phyno;
148: sc->mii_funcs = &iophy_funcs;
149: sc->mii_pdata = mii;
150: sc->mii_flags = ma->mii_flags;
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: iophy_service(sc, mii, cmd)
162: struct mii_softc *sc;
163: struct mii_data *mii;
164: int cmd;
165: {
166: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
167: int reg;
168:
169: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
170: return (ENXIO);
171:
172: switch (cmd) {
173: case MII_POLLSTAT:
174: /*
175: * If we're not polling our PHY instance, just return.
176: */
177: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
178: return (0);
179: break;
180:
181: case MII_MEDIACHG:
182: /*
183: * If the media indicates a different PHY instance,
184: * isolate ourselves.
185: */
186: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
187: reg = PHY_READ(sc, MII_BMCR);
188: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
189: return (0);
190: }
191:
192: /*
193: * If the interface is not up, don't do anything.
194: */
195: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
196: break;
197:
198: mii_phy_setmedia(sc);
199: break;
200:
201: case MII_TICK:
202: /*
203: * If we're not currently selected, just return.
204: */
205: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
206: return (0);
207:
208: if (mii_phy_tick(sc) == EJUSTRETURN)
209: return (0);
210: break;
211:
212: case MII_DOWN:
213: mii_phy_down(sc);
214: return (0);
215: }
216:
217: /* Update the media status. */
218: mii_phy_status(sc);
219:
220: /* Callback if something changed. */
221: mii_phy_update(sc, cmd);
222: return (0);
223: }
224:
225: void
226: iophy_status(sc)
227: struct mii_softc *sc;
228: {
229: struct mii_data *mii = sc->mii_pdata;
230: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
231: int bmsr, bmcr, ext0;
232:
233: mii->mii_media_status = IFM_AVALID;
234: mii->mii_media_active = IFM_ETHER;
235:
236: bmsr = PHY_READ(sc, MII_BMSR) |
237: PHY_READ(sc, MII_BMSR);
238: if (bmsr & BMSR_LINK)
239: mii->mii_media_status |= IFM_ACTIVE;
240:
241: bmcr = PHY_READ(sc, MII_BMCR);
242: if (bmcr & BMCR_ISO) {
243: mii->mii_media_active |= IFM_NONE;
244: mii->mii_media_status = 0;
245: return;
246: }
247:
248: if (bmcr & BMCR_LOOP)
249: mii->mii_media_active |= IFM_LOOP;
250:
251: if (bmcr & BMCR_AUTOEN) {
252: if ((bmsr & BMSR_ACOMP) == 0) {
253: /* Erg, still trying, I guess... */
254: mii->mii_media_active |= IFM_NONE;
255: return;
256: }
257:
258: ext0 = PHY_READ(sc, MII_IOPHY_EXT0);
259: if (ext0 & EXT0_SPEED) {
260: if (bmsr & BMSR_100T4) {
261: mii->mii_media_active |= IFM_100_T4;
262: return;
263: } else
264: mii->mii_media_active |= IFM_100_TX;
265: } else
266: mii->mii_media_active |= IFM_10_T;
267:
268: if (ext0 & EXT0_DUPLEX)
269: mii->mii_media_active |= IFM_FDX;
270: else
271: mii->mii_media_active |= IFM_HDX;
272: } else
273: mii->mii_media_active = ife->ifm_media;
274: }
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