Annotation of sys/dev/mii/qsphy.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: qsphy.c,v 1.14 2006/12/27 19:11:09 kettenis Exp $ */
2: /* $NetBSD: qsphy.c,v 1.19 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 Quality Semiconductor's QS6612 ethernet 10/100 PHY
72: * datasheet from www.qualitysemi.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:
81: #include <net/if.h>
82: #include <net/if_media.h>
83:
84: #include <dev/mii/mii.h>
85: #include <dev/mii/miivar.h>
86: #include <dev/mii/miidevs.h>
87:
88: #include <dev/mii/qsphyreg.h>
89:
90: int qsphymatch(struct device *, void *, void *);
91: void qsphyattach(struct device *, struct device *, void *);
92:
93: struct cfattach qsphy_ca = {
94: sizeof(struct mii_softc), qsphymatch, qsphyattach, mii_phy_detach,
95: mii_phy_activate
96: };
97:
98: struct cfdriver qsphy_cd = {
99: NULL, "qsphy", DV_DULL
100: };
101:
102: int qsphy_service(struct mii_softc *, struct mii_data *, int);
103: void qsphy_reset(struct mii_softc *);
104: void qsphy_status(struct mii_softc *);
105:
106: const struct mii_phy_funcs qsphy_funcs = {
107: qsphy_service, qsphy_status, qsphy_reset,
108: };
109:
110: static const struct mii_phydesc qsphys[] = {
111: { MII_OUI_QUALSEMI, MII_MODEL_QUALSEMI_QS6612,
112: MII_STR_QUALSEMI_QS6612 },
113:
114: { 0, 0,
115: NULL },
116: };
117:
118: int
119: qsphymatch(struct device *parent, void *match, void *aux)
120: {
121: struct mii_attach_args *ma = aux;
122:
123: if (mii_phy_match(ma, qsphys) != NULL)
124: return (10);
125:
126: return (0);
127: }
128:
129: void
130: qsphyattach(struct device *parent, struct device *self, void *aux)
131: {
132: struct mii_softc *sc = (struct mii_softc *)self;
133: struct mii_attach_args *ma = aux;
134: struct mii_data *mii = ma->mii_data;
135: const struct mii_phydesc *mpd;
136:
137: mpd = mii_phy_match(ma, qsphys);
138: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
139:
140: sc->mii_inst = mii->mii_instance;
141: sc->mii_phy = ma->mii_phyno;
142: sc->mii_funcs = &qsphy_funcs;
143: sc->mii_pdata = mii;
144: sc->mii_flags = ma->mii_flags;
145:
146: PHY_RESET(sc);
147:
148: sc->mii_capabilities =
149: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
150: if (sc->mii_capabilities & BMSR_MEDIAMASK)
151: mii_phy_add_media(sc);
152: }
153:
154: int
155: qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
156: {
157: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
158: int reg;
159:
160: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
161: return (ENXIO);
162:
163: switch (cmd) {
164: case MII_POLLSTAT:
165: /*
166: * If we're not polling our PHY instance, just return.
167: */
168: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
169: return (0);
170: break;
171:
172: case MII_MEDIACHG:
173: /*
174: * If the media indicates a different PHY instance,
175: * isolate ourselves.
176: */
177: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
178: reg = PHY_READ(sc, MII_BMCR);
179: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
180: return (0);
181: }
182:
183: /*
184: * If the interface is not up, don't do anything.
185: */
186: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
187: break;
188:
189: mii_phy_setmedia(sc);
190: break;
191:
192: case MII_TICK:
193: /*
194: * If we're not currently selected, just return.
195: */
196: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
197: return (0);
198:
199: if (mii_phy_tick(sc) == EJUSTRETURN)
200: return (0);
201: break;
202:
203: case MII_DOWN:
204: mii_phy_down(sc);
205: return (0);
206: }
207:
208: /* Update the media status. */
209: mii_phy_status(sc);
210:
211: /* Callback if something changed. */
212: mii_phy_update(sc, cmd);
213: return (0);
214: }
215:
216: void
217: qsphy_status(struct mii_softc *sc)
218: {
219: struct mii_data *mii = sc->mii_pdata;
220: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
221: int bmsr, bmcr, pctl;
222:
223: mii->mii_media_status = IFM_AVALID;
224: mii->mii_media_active = IFM_ETHER;
225:
226: bmsr = PHY_READ(sc, MII_BMSR) |
227: PHY_READ(sc, MII_BMSR);
228: if (bmsr & BMSR_LINK)
229: mii->mii_media_status |= IFM_ACTIVE;
230:
231: bmcr = PHY_READ(sc, MII_BMCR);
232: if (bmcr & BMCR_ISO) {
233: mii->mii_media_active |= IFM_NONE;
234: mii->mii_media_status = 0;
235: return;
236: }
237:
238: if (bmcr & BMCR_LOOP)
239: mii->mii_media_active |= IFM_LOOP;
240:
241: if (bmcr & BMCR_AUTOEN) {
242: if ((bmsr & BMSR_ACOMP) == 0) {
243: /* Erg, still trying, I guess... */
244: mii->mii_media_active |= IFM_NONE;
245: return;
246: }
247: pctl = PHY_READ(sc, MII_QSPHY_PCTL) |
248: PHY_READ(sc, MII_QSPHY_PCTL);
249: switch (pctl & PCTL_OPMASK) {
250: case PCTL_10_T:
251: mii->mii_media_active |= IFM_10_T|IFM_HDX;
252: break;
253: case PCTL_10_T_FDX:
254: mii->mii_media_active |= IFM_10_T|IFM_FDX;
255: break;
256: case PCTL_100_TX:
257: mii->mii_media_active |= IFM_100_TX|IFM_HDX;
258: break;
259: case PCTL_100_TX_FDX:
260: mii->mii_media_active |= IFM_100_TX|IFM_FDX;
261: break;
262: case PCTL_100_T4:
263: mii->mii_media_active |= IFM_100_T4;
264: break;
265: default:
266: /* Erg... this shouldn't happen. */
267: mii->mii_media_active |= IFM_NONE;
268: break;
269: }
270: } else
271: mii->mii_media_active = ife->ifm_media;
272: }
273:
274: void
275: qsphy_reset(struct mii_softc *sc)
276: {
277: mii_phy_reset(sc);
278: PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
279: }
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