mii.c revision 1.18 1 1.18 thorpej /* $NetBSD: mii.c,v 1.18 2000/02/02 08:05:33 thorpej Exp $ */
2 1.6 thorpej
3 1.6 thorpej /*-
4 1.17 thorpej * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
5 1.6 thorpej * All rights reserved.
6 1.6 thorpej *
7 1.6 thorpej * This code is derived from software contributed to The NetBSD Foundation
8 1.6 thorpej * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 1.6 thorpej * NASA Ames Research Center.
10 1.1 bouyer *
11 1.1 bouyer * Redistribution and use in source and binary forms, with or without
12 1.1 bouyer * modification, are permitted provided that the following conditions
13 1.1 bouyer * are met:
14 1.1 bouyer * 1. Redistributions of source code must retain the above copyright
15 1.1 bouyer * notice, this list of conditions and the following disclaimer.
16 1.1 bouyer * 2. Redistributions in binary form must reproduce the above copyright
17 1.1 bouyer * notice, this list of conditions and the following disclaimer in the
18 1.1 bouyer * documentation and/or other materials provided with the distribution.
19 1.1 bouyer * 3. All advertising materials mentioning features or use of this software
20 1.1 bouyer * must display the following acknowledgement:
21 1.6 thorpej * This product includes software developed by the NetBSD
22 1.6 thorpej * Foundation, Inc. and its contributors.
23 1.6 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its
24 1.6 thorpej * contributors may be used to endorse or promote products derived
25 1.6 thorpej * from this software without specific prior written permission.
26 1.1 bouyer *
27 1.6 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 1.6 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 1.6 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 1.6 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 1.6 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 1.6 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 1.6 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 1.6 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 1.6 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 1.6 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 1.6 thorpej * POSSIBILITY OF SUCH DAMAGE.
38 1.6 thorpej */
39 1.6 thorpej
40 1.6 thorpej /*
41 1.6 thorpej * MII bus layer, glues MII-capable network interface drivers to sharable
42 1.6 thorpej * PHY drivers. This exports an interface compatible with BSD/OS 3.0's,
43 1.6 thorpej * plus some NetBSD extensions.
44 1.1 bouyer */
45 1.1 bouyer
46 1.1 bouyer #include <sys/param.h>
47 1.6 thorpej #include <sys/device.h>
48 1.1 bouyer #include <sys/systm.h>
49 1.1 bouyer #include <sys/socket.h>
50 1.1 bouyer
51 1.1 bouyer #include <net/if.h>
52 1.1 bouyer #include <net/if_media.h>
53 1.1 bouyer
54 1.6 thorpej #include <dev/mii/mii.h>
55 1.6 thorpej #include <dev/mii/miivar.h>
56 1.1 bouyer
57 1.6 thorpej int mii_print __P((void *, const char *));
58 1.6 thorpej int mii_submatch __P((struct device *, struct cfdata *, void *));
59 1.1 bouyer
60 1.6 thorpej /*
61 1.6 thorpej * Helper function used by network interface drivers, attaches PHYs
62 1.6 thorpej * to the network interface driver parent.
63 1.6 thorpej */
64 1.6 thorpej void
65 1.18 thorpej mii_attach(parent, mii, capmask, phyloc, offloc)
66 1.6 thorpej struct device *parent;
67 1.6 thorpej struct mii_data *mii;
68 1.15 thorpej int capmask, phyloc, offloc;
69 1.6 thorpej {
70 1.6 thorpej struct mii_attach_args ma;
71 1.6 thorpej struct mii_softc *child;
72 1.13 thorpej int bmsr, offset = 0;
73 1.15 thorpej int phymin, phymax;
74 1.1 bouyer
75 1.15 thorpej if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
76 1.18 thorpej panic("mii_attach: phyloc and offloc specified");
77 1.1 bouyer
78 1.15 thorpej if (phyloc == MII_PHY_ANY) {
79 1.15 thorpej phymin = 0;
80 1.15 thorpej phymax = MII_NPHY - 1;
81 1.15 thorpej } else
82 1.15 thorpej phymin = phymax = phyloc;
83 1.15 thorpej
84 1.15 thorpej if ((mii->mii_flags & MIIF_INITDONE) == 0) {
85 1.15 thorpej LIST_INIT(&mii->mii_phys);
86 1.15 thorpej mii->mii_flags |= MIIF_INITDONE;
87 1.15 thorpej }
88 1.15 thorpej
89 1.15 thorpej for (ma.mii_phyno = phymin; ma.mii_phyno <= phymax; ma.mii_phyno++) {
90 1.13 thorpej /*
91 1.13 thorpej * Make sure we haven't already configured a PHY at this
92 1.18 thorpej * address. This allows mii_attach() to be called
93 1.13 thorpej * multiple times.
94 1.13 thorpej */
95 1.13 thorpej for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
96 1.13 thorpej child = LIST_NEXT(child, mii_list)) {
97 1.13 thorpej if (child->mii_phy == ma.mii_phyno) {
98 1.13 thorpej /*
99 1.13 thorpej * Yes, there is already something
100 1.13 thorpej * configured at this address.
101 1.13 thorpej */
102 1.14 thorpej offset++;
103 1.13 thorpej continue;
104 1.13 thorpej }
105 1.13 thorpej }
106 1.13 thorpej
107 1.6 thorpej /*
108 1.11 thorpej * Check to see if there is a PHY at this address. Note,
109 1.11 thorpej * many braindead PHYs report 0/0 in their ID registers,
110 1.11 thorpej * so we test for media in the BMSR.
111 1.11 thorpej */
112 1.11 thorpej bmsr = (*mii->mii_readreg)(parent, ma.mii_phyno, MII_BMSR);
113 1.11 thorpej if (bmsr == 0 || bmsr == 0xffff ||
114 1.11 thorpej (bmsr & BMSR_MEDIAMASK) == 0) {
115 1.11 thorpej /* Assume no PHY at this address. */
116 1.15 thorpej continue;
117 1.15 thorpej }
118 1.15 thorpej
119 1.15 thorpej /*
120 1.15 thorpej * There is a PHY at this address. If we were given an
121 1.15 thorpej * `offset' locator, skip this PHY if it doesn't match.
122 1.15 thorpej */
123 1.15 thorpej if (offloc != MII_OFFSET_ANY && offloc != offset) {
124 1.15 thorpej offset++;
125 1.11 thorpej continue;
126 1.11 thorpej }
127 1.11 thorpej
128 1.11 thorpej /*
129 1.11 thorpej * Extract the IDs. Braindead PHYs will be handled by
130 1.11 thorpej * the `ukphy' driver, as we have no ID information to
131 1.11 thorpej * match on.
132 1.6 thorpej */
133 1.6 thorpej ma.mii_id1 = (*mii->mii_readreg)(parent, ma.mii_phyno,
134 1.6 thorpej MII_PHYIDR1);
135 1.6 thorpej ma.mii_id2 = (*mii->mii_readreg)(parent, ma.mii_phyno,
136 1.6 thorpej MII_PHYIDR2);
137 1.1 bouyer
138 1.6 thorpej ma.mii_data = mii;
139 1.6 thorpej ma.mii_capmask = capmask;
140 1.1 bouyer
141 1.6 thorpej if ((child = (struct mii_softc *)config_found_sm(parent, &ma,
142 1.6 thorpej mii_print, mii_submatch)) != NULL) {
143 1.6 thorpej /*
144 1.6 thorpej * Link it up in the parent's MII data.
145 1.6 thorpej */
146 1.6 thorpej LIST_INSERT_HEAD(&mii->mii_phys, child, mii_list);
147 1.13 thorpej child->mii_offset = offset;
148 1.6 thorpej mii->mii_instance++;
149 1.6 thorpej }
150 1.13 thorpej offset++;
151 1.17 thorpej }
152 1.17 thorpej }
153 1.17 thorpej
154 1.17 thorpej void
155 1.18 thorpej mii_activate(mii, act, phyloc, offloc)
156 1.17 thorpej struct mii_data *mii;
157 1.17 thorpej enum devact act;
158 1.17 thorpej int phyloc, offloc;
159 1.17 thorpej {
160 1.17 thorpej struct mii_softc *child;
161 1.17 thorpej
162 1.17 thorpej if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
163 1.18 thorpej panic("mii_activate: phyloc and offloc specified");
164 1.17 thorpej
165 1.17 thorpej if ((mii->mii_flags & MIIF_INITDONE) == 0)
166 1.17 thorpej return;
167 1.17 thorpej
168 1.17 thorpej for (child = LIST_FIRST(&mii->mii_phys);
169 1.17 thorpej child != NULL; child = LIST_NEXT(child, mii_list)) {
170 1.17 thorpej if (phyloc != MII_PHY_ANY || offloc != MII_OFFSET_ANY) {
171 1.17 thorpej if (phyloc != MII_PHY_ANY &&
172 1.17 thorpej phyloc != child->mii_phy)
173 1.17 thorpej continue;
174 1.17 thorpej if (offloc != MII_OFFSET_ANY &&
175 1.17 thorpej offloc != child->mii_offset)
176 1.17 thorpej continue;
177 1.17 thorpej }
178 1.17 thorpej switch (act) {
179 1.17 thorpej case DVACT_ACTIVATE:
180 1.18 thorpej panic("mii_activate: DVACT_ACTIVATE");
181 1.17 thorpej break;
182 1.17 thorpej
183 1.17 thorpej case DVACT_DEACTIVATE:
184 1.17 thorpej if (config_deactivate(&child->mii_dev) != 0)
185 1.17 thorpej panic("%s: config_activate(%d) failed\n",
186 1.17 thorpej child->mii_dev.dv_xname, act);
187 1.17 thorpej }
188 1.17 thorpej }
189 1.17 thorpej }
190 1.17 thorpej
191 1.17 thorpej void
192 1.18 thorpej mii_detach(mii, phyloc, offloc)
193 1.17 thorpej struct mii_data *mii;
194 1.17 thorpej int phyloc, offloc;
195 1.17 thorpej {
196 1.17 thorpej struct mii_softc *child, *nchild;
197 1.17 thorpej
198 1.17 thorpej if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
199 1.18 thorpej panic("mii_detach: phyloc and offloc specified");
200 1.17 thorpej
201 1.17 thorpej if ((mii->mii_flags & MIIF_INITDONE) == 0)
202 1.17 thorpej return;
203 1.17 thorpej
204 1.17 thorpej for (child = LIST_FIRST(&mii->mii_phys);
205 1.17 thorpej child != NULL; child = nchild) {
206 1.17 thorpej nchild = LIST_NEXT(child, mii_list);
207 1.17 thorpej if (phyloc != MII_PHY_ANY || offloc != MII_OFFSET_ANY) {
208 1.17 thorpej if (phyloc != MII_PHY_ANY &&
209 1.17 thorpej phyloc != child->mii_phy)
210 1.17 thorpej continue;
211 1.17 thorpej if (offloc != MII_OFFSET_ANY &&
212 1.17 thorpej offloc != child->mii_offset)
213 1.17 thorpej continue;
214 1.17 thorpej }
215 1.17 thorpej LIST_REMOVE(child, mii_list);
216 1.17 thorpej (void) config_detach(&child->mii_dev, DETACH_FORCE);
217 1.6 thorpej }
218 1.4 bouyer }
219 1.1 bouyer
220 1.2 thorpej int
221 1.2 thorpej mii_print(aux, pnp)
222 1.1 bouyer void *aux;
223 1.1 bouyer const char *pnp;
224 1.1 bouyer {
225 1.6 thorpej struct mii_attach_args *ma = aux;
226 1.2 thorpej
227 1.6 thorpej if (pnp != NULL)
228 1.8 thorpej printf("OUI 0x%06x model 0x%04x rev %d at %s",
229 1.6 thorpej MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2),
230 1.6 thorpej MII_REV(ma->mii_id2), pnp);
231 1.6 thorpej
232 1.6 thorpej printf(" phy %d", ma->mii_phyno);
233 1.1 bouyer return (UNCONF);
234 1.1 bouyer }
235 1.1 bouyer
236 1.1 bouyer int
237 1.6 thorpej mii_submatch(parent, cf, aux)
238 1.1 bouyer struct device *parent;
239 1.1 bouyer struct cfdata *cf;
240 1.1 bouyer void *aux;
241 1.1 bouyer {
242 1.6 thorpej struct mii_attach_args *ma = aux;
243 1.1 bouyer
244 1.7 thorpej if (ma->mii_phyno != cf->cf_loc[MIICF_PHY] &&
245 1.7 thorpej cf->cf_loc[MIICF_PHY] != MIICF_PHY_DEFAULT)
246 1.6 thorpej return (0);
247 1.1 bouyer
248 1.1 bouyer return ((*cf->cf_attach->ca_match)(parent, cf, aux));
249 1.1 bouyer }
250 1.1 bouyer
251 1.6 thorpej /*
252 1.6 thorpej * Media changed; notify all PHYs.
253 1.6 thorpej */
254 1.6 thorpej int
255 1.6 thorpej mii_mediachg(mii)
256 1.6 thorpej struct mii_data *mii;
257 1.1 bouyer {
258 1.6 thorpej struct mii_softc *child;
259 1.6 thorpej int rv;
260 1.1 bouyer
261 1.6 thorpej mii->mii_media_status = 0;
262 1.6 thorpej mii->mii_media_active = IFM_NONE;
263 1.6 thorpej
264 1.6 thorpej for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
265 1.6 thorpej child = LIST_NEXT(child, mii_list)) {
266 1.6 thorpej rv = (*child->mii_service)(child, mii, MII_MEDIACHG);
267 1.6 thorpej if (rv)
268 1.6 thorpej return (rv);
269 1.1 bouyer }
270 1.6 thorpej return (0);
271 1.1 bouyer }
272 1.1 bouyer
273 1.6 thorpej /*
274 1.6 thorpej * Call the PHY tick routines, used during autonegotiation.
275 1.6 thorpej */
276 1.6 thorpej void
277 1.6 thorpej mii_tick(mii)
278 1.6 thorpej struct mii_data *mii;
279 1.1 bouyer {
280 1.6 thorpej struct mii_softc *child;
281 1.1 bouyer
282 1.6 thorpej for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
283 1.6 thorpej child = LIST_NEXT(child, mii_list))
284 1.6 thorpej (void) (*child->mii_service)(child, mii, MII_TICK);
285 1.1 bouyer }
286 1.1 bouyer
287 1.6 thorpej /*
288 1.6 thorpej * Get media status from PHYs.
289 1.6 thorpej */
290 1.2 thorpej void
291 1.6 thorpej mii_pollstat(mii)
292 1.6 thorpej struct mii_data *mii;
293 1.1 bouyer {
294 1.6 thorpej struct mii_softc *child;
295 1.1 bouyer
296 1.6 thorpej mii->mii_media_status = 0;
297 1.6 thorpej mii->mii_media_active = IFM_NONE;
298 1.1 bouyer
299 1.6 thorpej for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
300 1.6 thorpej child = LIST_NEXT(child, mii_list))
301 1.6 thorpej (void) (*child->mii_service)(child, mii, MII_POLLSTAT);
302 1.16 thorpej }
303 1.16 thorpej
304 1.16 thorpej /*
305 1.16 thorpej * Inform the PHYs that the interface is down.
306 1.16 thorpej */
307 1.16 thorpej void
308 1.16 thorpej mii_down(mii)
309 1.16 thorpej struct mii_data *mii;
310 1.16 thorpej {
311 1.16 thorpej struct mii_softc *child;
312 1.16 thorpej
313 1.16 thorpej for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
314 1.16 thorpej child = LIST_NEXT(child, mii_list))
315 1.16 thorpej (void) (*child->mii_service)(child, mii, MII_DOWN);
316 1.1 bouyer }
317