Annotation of sys/dev/mii/nsphyter.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: nsphyter.c,v 1.13 2006/12/27 19:11:09 kettenis Exp $ */
2: /* $NetBSD: nsphyter.c,v 1.5 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: * driver for National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
72: * Data Sheet available from www.national.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/nsphyterreg.h>
90:
91: int nsphytermatch(struct device *, void *, void *);
92: void nsphyterattach(struct device *, struct device *, void *);
93:
94: struct cfattach nsphyter_ca = {
95: sizeof(struct mii_softc), nsphytermatch, nsphyterattach,
96: mii_phy_detach, mii_phy_activate
97: };
98:
99: struct cfdriver nsphyter_cd = {
100: NULL, "nsphyter", DV_DULL
101: };
102:
103: int nsphyter_service(struct mii_softc *, struct mii_data *, int);
104: void nsphyter_status(struct mii_softc *);
105:
106: const struct mii_phy_funcs nsphyter_funcs = {
107: nsphyter_service, nsphyter_status, mii_phy_reset,
108: };
109:
110: static const struct mii_phydesc nsphyterphys[] = {
111: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815,
112: MII_STR_NATSEMI_DP83815 },
113: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843,
114: MII_STR_NATSEMI_DP83843 },
115: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847,
116: MII_STR_NATSEMI_DP83847 },
117:
118: { 0, 0,
119: NULL },
120: };
121:
122: int
123: nsphytermatch(struct device *parent, void *match, void *aux)
124: {
125: struct mii_attach_args *ma = aux;
126:
127: if (mii_phy_match(ma, nsphyterphys) != NULL)
128: return (10);
129:
130: return (0);
131: }
132:
133: void
134: nsphyterattach(struct device *parent, struct device *self, void *aux)
135: {
136: struct mii_softc *sc = (struct mii_softc *)self;
137: struct mii_attach_args *ma = aux;
138: struct mii_data *mii = ma->mii_data;
139: const struct mii_phydesc *mpd;
140:
141: mpd = mii_phy_match(ma, nsphyterphys);
142: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
143:
144: sc->mii_inst = mii->mii_instance;
145: sc->mii_phy = ma->mii_phyno;
146: sc->mii_funcs = &nsphyter_funcs;
147: sc->mii_pdata = mii;
148: sc->mii_flags = ma->mii_flags;
149:
150: PHY_RESET(sc);
151:
152: sc->mii_capabilities =
153: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
154: if (sc->mii_capabilities & BMSR_MEDIAMASK)
155: mii_phy_add_media(sc);
156: }
157:
158: int
159: nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
160: {
161: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
162: int reg;
163:
164: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
165: return (ENXIO);
166:
167: switch (cmd) {
168: case MII_POLLSTAT:
169: /*
170: * If we're not polling our PHY instance, just return.
171: */
172: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
173: return (0);
174: break;
175:
176: case MII_MEDIACHG:
177: /*
178: * If the media indicates a different PHY instance,
179: * isolate ourselves.
180: */
181: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
182: reg = PHY_READ(sc, MII_BMCR);
183: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
184: return (0);
185: }
186:
187: /*
188: * If the interface is not up, don't do anything.
189: */
190: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
191: break;
192:
193: mii_phy_setmedia(sc);
194: break;
195:
196: case MII_TICK:
197: /*
198: * If we're not currently selected, just return.
199: */
200: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
201: return (0);
202:
203: if (mii_phy_tick(sc) == EJUSTRETURN)
204: return (0);
205: break;
206:
207: case MII_DOWN:
208: mii_phy_down(sc);
209: return (0);
210: }
211:
212: /* Update the media status. */
213: mii_phy_status(sc);
214:
215: /* Callback if something changed. */
216: mii_phy_update(sc, cmd);
217: return (0);
218: }
219:
220: void
221: nsphyter_status(struct mii_softc *sc)
222: {
223: struct mii_data *mii = sc->mii_pdata;
224: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
225: int bmsr, bmcr, physts;
226:
227: mii->mii_media_status = IFM_AVALID;
228: mii->mii_media_active = IFM_ETHER;
229:
230: bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
231: physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
232:
233: if (physts & PHYSTS_LINK)
234: mii->mii_media_status |= IFM_ACTIVE;
235:
236: bmcr = PHY_READ(sc, MII_BMCR);
237: if (bmcr & BMCR_ISO) {
238: mii->mii_media_active |= IFM_NONE;
239: mii->mii_media_status = 0;
240: return;
241: }
242:
243: if (bmcr & BMCR_LOOP)
244: mii->mii_media_active |= IFM_LOOP;
245:
246: if (bmcr & BMCR_AUTOEN) {
247: /*
248: * The media status bits are only valid of autonegotiation
249: * has completed (or it's disabled).
250: */
251: if ((bmsr & BMSR_ACOMP) == 0) {
252: /* Erg, still trying, I guess... */
253: mii->mii_media_active |= IFM_NONE;
254: return;
255: }
256:
257: if (physts & PHYSTS_SPEED10)
258: mii->mii_media_active |= IFM_10_T;
259: else
260: mii->mii_media_active |= IFM_100_TX;
261:
262: if (physts & PHYSTS_DUPLEX)
263: mii->mii_media_active |= IFM_FDX;
264: else
265: mii->mii_media_active |= IFM_HDX;
266: } else
267: mii->mii_media_active = ife->ifm_media;
268: }
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