Remove some duplicate FreeBSD CVS IDs, move some IDs to better places.
[dragonfly.git] / sys / dev / netif / mii_layer / amphy.c
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1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
198d1293 33 * $DragonFly: src/sys/dev/netif/mii_layer/amphy.c,v 1.6 2005/02/21 18:40:36 joerg Exp $
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34 */
35
36/*
37 * driver for AMD AM79c873 PHYs
38 * This driver also works for the Davicom DM9101 PHY, which appears to
39 * be an AM79c873 workalike.
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/socket.h>
46#include <sys/bus.h>
47
48#include <net/if.h>
49#include <net/if_media.h>
50
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51#include "mii.h"
52#include "miivar.h"
53#include "miidevs.h"
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1f2de5d4 55#include "amphyreg.h"
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56
57#include "miibus_if.h"
58
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59static int amphy_probe (device_t);
60static int amphy_attach (device_t);
61static int amphy_detach (device_t);
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62
63static device_method_t amphy_methods[] = {
64 /* device interface */
65 DEVMETHOD(device_probe, amphy_probe),
66 DEVMETHOD(device_attach, amphy_attach),
67 DEVMETHOD(device_detach, amphy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
69 { 0, 0 }
70};
71
72static devclass_t amphy_devclass;
73
74static driver_t amphy_driver = {
75 "amphy",
76 amphy_methods,
77 sizeof(struct mii_softc)
78};
79
80DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0);
81
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82int amphy_service (struct mii_softc *, struct mii_data *, int);
83void amphy_status (struct mii_softc *);
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84
85static int amphy_probe(dev)
86 device_t dev;
87{
88 struct mii_attach_args *ma;
89
90 ma = device_get_ivars(dev);
91
92 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxAMD ||
93 MII_MODEL(ma->mii_id2) != MII_MODEL_xxAMD_79C873) &&
94 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxDAVICOM ||
95 MII_MODEL(ma->mii_id2) != MII_MODEL_xxDAVICOM_DM9101))
96 return(ENXIO);
97
98 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD)
99 device_set_desc(dev, MII_STR_xxAMD_79C873);
100 else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM)
101 device_set_desc(dev, MII_STR_xxDAVICOM_DM9101);
102
103 return(0);
104}
105
106static int amphy_attach(dev)
107 device_t dev;
108{
109 struct mii_softc *sc;
110 struct mii_attach_args *ma;
111 struct mii_data *mii;
112
113 sc = device_get_softc(dev);
114 ma = device_get_ivars(dev);
1098b248 115 mii_softc_init(sc);
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116 sc->mii_dev = device_get_parent(dev);
117 mii = device_get_softc(sc->mii_dev);
118 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
119
120 sc->mii_inst = mii->mii_instance;
121 sc->mii_phy = ma->mii_phyno;
122 sc->mii_service = amphy_service;
123 sc->mii_pdata = mii;
124
125 sc->mii_flags |= MIIF_NOISOLATE;
126 mii->mii_instance++;
127
128#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
129
130 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
131 BMCR_ISO);
132#if 0
133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
134 BMCR_LOOP|BMCR_S100);
135#endif
136
137 mii_phy_reset(sc);
138
139 sc->mii_capabilities =
140 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
141 device_printf(dev, " ");
142 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
143 printf("no media present");
144 else
145 mii_add_media(mii, sc->mii_capabilities,
146 sc->mii_inst);
147 printf("\n");
148#undef ADD
149 MIIBUS_MEDIAINIT(sc->mii_dev);
150 return(0);
151}
152
153static int amphy_detach(dev)
154 device_t dev;
155{
156 struct mii_softc *sc;
157 struct mii_data *mii;
158
159 sc = device_get_softc(dev);
160 mii = device_get_softc(device_get_parent(dev));
161 mii_phy_auto_stop(sc);
162 sc->mii_dev = NULL;
163 LIST_REMOVE(sc, mii_list);
164
165 return(0);
166}
167int
168amphy_service(sc, mii, cmd)
169 struct mii_softc *sc;
170 struct mii_data *mii;
171 int cmd;
172{
173 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
174 int reg;
175
176 switch (cmd) {
177 case MII_POLLSTAT:
178 /*
179 * If we're not polling our PHY instance, just return.
180 */
181 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
182 return (0);
183 break;
184
185 case MII_MEDIACHG:
186 /*
187 * If the media indicates a different PHY instance,
188 * isolate ourselves.
189 */
190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
191 reg = PHY_READ(sc, MII_BMCR);
192 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
193 return (0);
194 }
195
196 /*
197 * If the interface is not up, don't do anything.
198 */
199 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
200 break;
201
202 switch (IFM_SUBTYPE(ife->ifm_media)) {
203 case IFM_AUTO:
204 /*
205 * If we're already in auto mode, just return.
206 */
207 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
208 return (0);
209 (void) mii_phy_auto(sc, 1);
210 break;
211 case IFM_100_T4:
212 /*
213 * XXX Not supported as a manual setting right now.
214 */
215 return (EINVAL);
216 default:
217 /*
218 * BMCR data is stored in the ifmedia entry.
219 */
220 PHY_WRITE(sc, MII_ANAR,
221 mii_anar(ife->ifm_media));
222 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
223 }
224 break;
225
226 case MII_TICK:
227 /*
228 * If we're not currently selected, just return.
229 */
230 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
231 return (0);
232
233 /*
234 * Only used for autonegotiation.
235 */
236 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
237 return (0);
238
239 /*
240 * Is the interface even up?
241 */
242 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
243 return (0);
244
245 /*
246 * Only retry autonegotiation every 5 seconds.
247 */
248 if (++sc->mii_ticks != 5)
249 return (0);
250
251 sc->mii_ticks = 0;
252
253 /*
254 * Check to see if we have link. If we do, we don't
255 * need to restart the autonegotiation process. Read
256 * the BMSR twice in case it's latched.
257 */
258 reg = PHY_READ(sc, MII_BMSR) |
259 PHY_READ(sc, MII_BMSR);
260 if (reg & BMSR_LINK)
261 break;
262
263 mii_phy_reset(sc);
264 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
265 return(0);
266 break;
267 }
268
269 /* Update the media status. */
270 amphy_status(sc);
271
272 /* Callback if something changed. */
273 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
274 MIIBUS_STATCHG(sc->mii_dev);
275 sc->mii_active = mii->mii_media_active;
276 }
277 return (0);
278}
279
280void
281amphy_status(sc)
282 struct mii_softc *sc;
283{
284 struct mii_data *mii = sc->mii_pdata;
285 int bmsr, bmcr, par, anlpar;
286
287 mii->mii_media_status = IFM_AVALID;
288 mii->mii_media_active = IFM_ETHER;
289
290 bmsr = PHY_READ(sc, MII_BMSR) |
291 PHY_READ(sc, MII_BMSR);
292 if (bmsr & BMSR_LINK)
293 mii->mii_media_status |= IFM_ACTIVE;
294
295 bmcr = PHY_READ(sc, MII_BMCR);
296 if (bmcr & BMCR_ISO) {
297 mii->mii_media_active |= IFM_NONE;
298 mii->mii_media_status = 0;
299 return;
300 }
301
302 if (bmcr & BMCR_LOOP)
303 mii->mii_media_active |= IFM_LOOP;
304
305 if (bmcr & BMCR_AUTOEN) {
306 /*
307 * The PAR status bits are only valid of autonegotiation
308 * has completed (or it's disabled).
309 */
310 if ((bmsr & BMSR_ACOMP) == 0) {
311 /* Erg, still trying, I guess... */
312 mii->mii_media_active |= IFM_NONE;
313 return;
314 }
315
316 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
317 anlpar = PHY_READ(sc, MII_ANAR) &
318 PHY_READ(sc, MII_ANLPAR);
319 if (anlpar & ANLPAR_T4)
320 mii->mii_media_active |= IFM_100_T4;
321 else if (anlpar & ANLPAR_TX_FD)
322 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
323 else if (anlpar & ANLPAR_TX)
324 mii->mii_media_active |= IFM_100_TX;
325 else if (anlpar & ANLPAR_10_FD)
326 mii->mii_media_active |= IFM_10_T|IFM_FDX;
327 else if (anlpar & ANLPAR_10)
328 mii->mii_media_active |= IFM_10_T;
329 else
330 mii->mii_media_active |= IFM_NONE;
331 return;
332 }
333
334 /*
335 * Link partner is not capable of autonegotiation.
336 */
337 par = PHY_READ(sc, MII_AMPHY_DSCSR);
338 if (par & DSCSR_100FDX)
339 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
340 else if (par & DSCSR_100HDX)
341 mii->mii_media_active |= IFM_100_TX;
342 else if (par & DSCSR_10FDX)
343 mii->mii_media_active |= IFM_10_T|IFM_HDX;
344 else if (par & DSCSR_10HDX)
345 mii->mii_media_active |= IFM_10_T;
346 } else
347 mii->mii_media_active = mii_media_from_bmcr(bmcr);
348}