Annotation of sys/dev/mii/inphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: inphy.c,v 1.14 2006/12/27 19:11:08 kettenis Exp $ */
2: /* $NetBSD: inphy.c,v 1.18 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: * driver for Intel's i82555 ethernet 10/100 PHY
72: * Data Sheet available from www.intel.com
73: */
74:
75: #include <sys/param.h>
76: #include <sys/systm.h>
77: #include <sys/kernel.h>
78: #include <sys/device.h>
79: #include <sys/socket.h>
80: #include <sys/errno.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/inphyreg.h>
90:
91: int inphymatch(struct device *, void *, void *);
92: void inphyattach(struct device *, struct device *, void *);
93:
94: struct cfattach inphy_ca = {
95: sizeof(struct mii_softc), inphymatch, inphyattach, mii_phy_detach,
96: mii_phy_activate
97: };
98:
99: struct cfdriver inphy_cd = {
100: NULL, "inphy", DV_DULL
101: };
102:
103: int inphy_service(struct mii_softc *, struct mii_data *, int);
104: void inphy_status(struct mii_softc *);
105:
106: const struct mii_phy_funcs inphy_funcs = {
107: inphy_service, inphy_status, mii_phy_reset,
108: };
109:
110: static const struct mii_phydesc inphys[] = {
111: { MII_OUI_INTEL, MII_MODEL_INTEL_I82555,
112: MII_STR_INTEL_I82555 },
113: { MII_OUI_INTEL, MII_MODEL_INTEL_I82562EM,
114: MII_STR_INTEL_I82562EM },
115: { MII_OUI_INTEL, MII_MODEL_INTEL_I82562ET,
116: MII_STR_INTEL_I82562ET },
117:
118: { 0, 0,
119: NULL },
120: };
121:
122: int
123: inphymatch(parent, match, aux)
124: struct device *parent;
125: void *match;
126: void *aux;
127: {
128: struct mii_attach_args *ma = aux;
129:
130: if (mii_phy_match(ma, inphys) != NULL)
131: return (10);
132:
133: return (0);
134: }
135:
136: void
137: inphyattach(parent, self, aux)
138: struct device *parent, *self;
139: void *aux;
140: {
141: struct mii_softc *sc = (struct mii_softc *)self;
142: struct mii_attach_args *ma = aux;
143: struct mii_data *mii = ma->mii_data;
144: const struct mii_phydesc *mpd;
145:
146: mpd = mii_phy_match(ma, inphys);
147: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
148:
149: sc->mii_inst = mii->mii_instance;
150: sc->mii_phy = ma->mii_phyno;
151: sc->mii_funcs = &inphy_funcs;
152: sc->mii_pdata = mii;
153: sc->mii_flags = ma->mii_flags;
154:
155: PHY_RESET(sc);
156:
157: sc->mii_capabilities =
158: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
159: if (sc->mii_capabilities & BMSR_MEDIAMASK)
160: mii_phy_add_media(sc);
161: }
162:
163: int
164: inphy_service(sc, mii, cmd)
165: struct mii_softc *sc;
166: struct mii_data *mii;
167: int cmd;
168: {
169: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
170: int reg;
171:
172: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
173: return (ENXIO);
174:
175: switch (cmd) {
176: case MII_POLLSTAT:
177: /*
178: * If we're not polling our PHY instance, just return.
179: */
180: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
181: return (0);
182: break;
183:
184: case MII_MEDIACHG:
185: /*
186: * If the media indicates a different PHY instance,
187: * isolate ourselves.
188: */
189: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
190: reg = PHY_READ(sc, MII_BMCR);
191: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
192: return (0);
193: }
194:
195: /*
196: * If the interface is not up, don't do anything.
197: */
198: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
199: break;
200:
201: mii_phy_setmedia(sc);
202: break;
203:
204: case MII_TICK:
205: /*
206: * If we're not currently selected, just return.
207: */
208: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
209: return (0);
210:
211: if (mii_phy_tick(sc) == EJUSTRETURN)
212: return (0);
213: break;
214:
215: case MII_DOWN:
216: mii_phy_down(sc);
217: return (0);
218: }
219:
220: /* Update the media status. */
221: mii_phy_status(sc);
222:
223: /* Callback if something changed. */
224: mii_phy_update(sc, cmd);
225: return (0);
226: }
227:
228: void
229: inphy_status(sc)
230: struct mii_softc *sc;
231: {
232: struct mii_data *mii = sc->mii_pdata;
233: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
234: int bmsr, bmcr, scr;
235:
236: mii->mii_media_status = IFM_AVALID;
237: mii->mii_media_active = IFM_ETHER;
238:
239: bmsr = PHY_READ(sc, MII_BMSR) |
240: PHY_READ(sc, MII_BMSR);
241: if (bmsr & BMSR_LINK)
242: mii->mii_media_status |= IFM_ACTIVE;
243:
244: bmcr = PHY_READ(sc, MII_BMCR);
245: if (bmcr & BMCR_ISO) {
246: mii->mii_media_active |= IFM_NONE;
247: mii->mii_media_status = 0;
248: return;
249: }
250:
251: if (bmcr & BMCR_LOOP)
252: mii->mii_media_active |= IFM_LOOP;
253:
254: if (bmcr & BMCR_AUTOEN) {
255: if ((bmsr & BMSR_ACOMP) == 0) {
256: /* Erg, still trying, I guess... */
257: mii->mii_media_active |= IFM_NONE;
258: return;
259: }
260:
261: scr = PHY_READ(sc, MII_INPHY_SCR);
262: if ((bmsr & BMSR_100T4) && (scr & SCR_T4))
263: mii->mii_media_active |= IFM_100_T4;
264: else if (scr & SCR_S100)
265: mii->mii_media_active |= IFM_100_TX;
266: else
267: mii->mii_media_active |= IFM_10_T;
268:
269: if (scr & SCR_FDX)
270: mii->mii_media_active |= IFM_FDX;
271: else
272: mii->mii_media_active |= IFM_HDX;
273: } else
274: mii->mii_media_active = ife->ifm_media;
275: }
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