Annotation of sys/dev/mii/tlphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: tlphy.c,v 1.18 2006/12/27 19:11:09 kettenis Exp $ */
2: /* $NetBSD: tlphy.c,v 1.26 2000/07/04 03:29:00 thorpej Exp $ */
3:
4: /*-
5: * Copyright (c) 1998, 1999, 2000 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 Texas Instruments's ThunderLAN PHYs
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: #include <sys/errno.h>
80:
81: #include <machine/bus.h>
82:
83: #include <net/if.h>
84: #include <net/if_media.h>
85:
86: #include <netinet/in.h>
87: #include <netinet/if_ether.h>
88:
89: #include <dev/mii/mii.h>
90: #include <dev/mii/miivar.h>
91: #include <dev/mii/miidevs.h>
92:
93: #include <dev/mii/tlphyreg.h>
94: #include <dev/mii/tlphyvar.h>
95:
96: /* ThunderLAN PHY can only be on a ThunderLAN */
97: #include <dev/pci/if_tlreg.h>
98:
99: struct tlphy_softc {
100: struct mii_softc sc_mii; /* generic PHY */
101: int sc_tlphycap;
102: int sc_need_acomp;
103: };
104:
105: struct cfdriver tlphy_cd = {
106: NULL, "tlphy", DV_DULL
107: };
108:
109: int tlphymatch(struct device *, void *, void *);
110: void tlphyattach(struct device *, struct device *, void *);
111:
112: struct cfattach tlphy_ca = {
113: sizeof(struct tlphy_softc), tlphymatch, tlphyattach, mii_phy_detach,
114: mii_phy_activate
115: };
116:
117: int tlphy_service(struct mii_softc *, struct mii_data *, int);
118: int tlphy_mii_phy_auto(struct tlphy_softc *, int);
119: void tlphy_acomp(struct tlphy_softc *);
120: void tlphy_status(struct mii_softc *);
121:
122: const struct mii_phy_funcs tlphy_funcs = {
123: tlphy_service, tlphy_status, mii_phy_reset,
124: };
125:
126: static const struct mii_phydesc tlphys[] = {
127: { MII_OUI_xxTI, MII_MODEL_xxTI_TLAN10T,
128: MII_STR_xxTI_TLAN10T },
129:
130: { 0, 0,
131: NULL },
132: };
133:
134: int
135: tlphymatch(struct device *parent, void *match, void *aux)
136: {
137: struct mii_attach_args *ma = aux;
138:
139: if (mii_phy_match(ma, tlphys) != NULL)
140: return (10);
141:
142: return (0);
143: }
144:
145: void
146: tlphyattach(struct device *parent, struct device *self, void *aux)
147: {
148: struct tlphy_softc *sc = (struct tlphy_softc *)self;
149: struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent;
150: struct mii_attach_args *ma = aux;
151: struct mii_data *mii = ma->mii_data;
152: const struct mii_phydesc *mpd;
153:
154: mpd = mii_phy_match(ma, tlphys);
155: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
156:
157: sc->sc_mii.mii_inst = mii->mii_instance;
158: sc->sc_mii.mii_phy = ma->mii_phyno;
159: sc->sc_mii.mii_funcs = &tlphy_funcs;
160: sc->sc_mii.mii_pdata = mii;
161: sc->sc_mii.mii_flags = ma->mii_flags;
162:
163: sc->sc_mii.mii_flags &= ~MIIF_NOISOLATE;
164: PHY_RESET(&sc->sc_mii);
165: sc->sc_mii.mii_flags |= MIIF_NOISOLATE;
166:
167: /*
168: * Note that if we're on a device that also supports 100baseTX,
169: * we are not going to want to use the built-in 10baseT port,
170: * since there will be another PHY on the MII wired up to the
171: * UTP connector. The parent indicates this to us by specifying
172: * the TLPHY_MEDIA_NO_10_T bit.
173: */
174: sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia;
175: if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0)
176: sc->sc_mii.mii_capabilities =
177: PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask;
178: else
179: sc->sc_mii.mii_capabilities = 0;
180:
181:
182: if (sc->sc_tlphycap & TLPHY_MEDIA_10_2)
183: ifmedia_add(&mii->mii_media, IFM_MAKEWORD(IFM_ETHER,
184: IFM_10_2, 0, sc->sc_mii.mii_inst), 0, NULL);
185: if (sc->sc_tlphycap & TLPHY_MEDIA_10_5)
186: ifmedia_add(&mii->mii_media, IFM_MAKEWORD(IFM_ETHER,
187: IFM_10_5, 0, sc->sc_mii.mii_inst), 0, NULL);
188: if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK)
189: mii_phy_add_media(&sc->sc_mii);
190: }
191:
192: int
193: tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd)
194: {
195: struct tlphy_softc *sc = (struct tlphy_softc *)self;
196: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
197: int reg;
198:
199: if ((sc->sc_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0)
200: return (ENXIO);
201:
202: if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp)
203: tlphy_acomp(sc);
204:
205: switch (cmd) {
206: case MII_POLLSTAT:
207: /*
208: * If we're not polling our PHY instance, just return.
209: */
210: if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
211: return (0);
212: break;
213:
214: case MII_MEDIACHG:
215: /*
216: * If the media indicates a different PHY instance,
217: * isolate ourselves.
218: */
219: if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) {
220: reg = PHY_READ(&sc->sc_mii, MII_BMCR);
221: PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO);
222: return (0);
223: }
224:
225: /*
226: * If the interface is not up, don't do anything.
227: */
228: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
229: break;
230:
231: switch (IFM_SUBTYPE(ife->ifm_media)) {
232: case IFM_AUTO:
233: /*
234: * The ThunderLAN PHY doesn't self-configure after
235: * an autonegotiation cycle, so there's no such
236: * thing as "already in auto mode".
237: */
238: (void) tlphy_mii_phy_auto(sc, 1);
239: break;
240: case IFM_10_2:
241: case IFM_10_5:
242: PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
243: PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
244: delay(100000);
245: break;
246: default:
247: PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
248: delay(100000);
249: mii_phy_setmedia(&sc->sc_mii);
250: }
251: break;
252:
253: case MII_TICK:
254: /*
255: * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
256: */
257:
258: /*
259: * If we're not currently selected, just return.
260: */
261: if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
262: return (0);
263:
264: if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN)
265: return (0);
266: break;
267:
268: case MII_DOWN:
269: mii_phy_down(&sc->sc_mii);
270: return (0);
271: }
272:
273: /* Update the media status. */
274: mii_phy_status(&sc->sc_mii);
275:
276: /* Callback if something changed. */
277: mii_phy_update(&sc->sc_mii, cmd);
278: return (0);
279: }
280:
281: void
282: tlphy_status(struct mii_softc *physc)
283: {
284: struct tlphy_softc *sc = (void *) physc;
285: struct mii_data *mii = sc->sc_mii.mii_pdata;
286: int bmsr, bmcr, tlctrl;
287:
288: mii->mii_media_status = IFM_AVALID;
289: mii->mii_media_active = IFM_ETHER;
290:
291: bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
292: if (bmcr & BMCR_ISO) {
293: mii->mii_media_active |= IFM_NONE;
294: mii->mii_media_status = 0;
295: return;
296: }
297:
298: tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
299: if (tlctrl & CTRL_AUISEL) {
300: mii->mii_media_status = 0;
301: mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
302: return;
303: }
304:
305: bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
306: PHY_READ(&sc->sc_mii, MII_BMSR);
307: if (bmsr & BMSR_LINK)
308: mii->mii_media_status |= IFM_ACTIVE;
309:
310: if (bmcr & BMCR_LOOP)
311: mii->mii_media_active |= IFM_LOOP;
312:
313: /*
314: * Grr, braindead ThunderLAN PHY doesn't have any way to
315: * tell which media is actually active. (Note it also
316: * doesn't self-configure after autonegotiation.) We
317: * just have to report what's in the BMCR.
318: */
319: if (bmcr & BMCR_FDX)
320: mii->mii_media_active |= IFM_FDX;
321: else
322: mii->mii_media_active |= IFM_HDX;
323: mii->mii_media_active |= IFM_10_T;
324: }
325:
326: int
327: tlphy_mii_phy_auto(struct tlphy_softc *sc, int waitfor)
328: {
329: int error;
330:
331: switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) {
332: case EIO:
333: /*
334: * Just assume we're not in full-duplex mode.
335: * XXX Check link and try AUI/BNC?
336: */
337: PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
338: break;
339:
340: case EJUSTRETURN:
341: /* Flag that we need to program when it completes. */
342: sc->sc_need_acomp = 1;
343: break;
344:
345: default:
346: tlphy_acomp(sc);
347: }
348:
349: return (error);
350: }
351:
352: void
353: tlphy_acomp(struct tlphy_softc *sc)
354: {
355: int aner, anlpar;
356:
357: sc->sc_need_acomp = 0;
358:
359: /*
360: * Grr, braindead ThunderLAN PHY doesn't self-configure
361: * after autonegotiation. We have to do it ourselves
362: * based on the link partner status.
363: */
364:
365: aner = PHY_READ(&sc->sc_mii, MII_ANER);
366: if (aner & ANER_LPAN) {
367: anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
368: PHY_READ(&sc->sc_mii, MII_ANAR);
369: if (anlpar & ANAR_10_FD) {
370: PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
371: return;
372: }
373: }
374: PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
375: }
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