FreeBSD/Linux Kernel Cross Reference
sys/dev/netif/xe/if_xe.c
1 /*-
2 * Copyright (c) 1998, 1999, 2003 Scott Mitchell
3 * 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $Id: if_xe.c,v 1.20 1999/06/13 19:17:40 scott Exp $
27 * $FreeBSD: src/sys/dev/xe/if_xe.c,v 1.39 2003/10/14 22:51:35 rsm Exp $
28 */
29
30 /*
31 * Portions of this software were derived from Werner Koch's xirc2ps driver
32 * for Linux under the terms of the following license (from v1.30 of the
33 * xirc2ps driver):
34 *
35 * Copyright (c) 1997 by Werner Koch (dd9jn)
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, and the entire permission notice in its entirety,
42 * including the disclaimer of warranties.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. The name of the author may not be used to endorse or promote
47 * products derived from this software without specific prior
48 * written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
51 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
53 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
54 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
55 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
56 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
58 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
60 * OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 /*
64 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The
65 * following cards are currently known to work with the driver:
66 * Xircom CreditCard 10/100 (CE3)
67 * Xircom CreditCard Ethernet + Modem 28 (CEM28)
68 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56)
69 * Xircom RealPort Ethernet 10
70 * Xircom RealPort Ethernet 10/100
71 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G)
72 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A)
73 * Compaq Netelligent 10/100 PC Card (CPQ-10/100)
74 *
75 * Some other cards *should* work, but support for them is either broken or in
76 * an unknown state at the moment. I'm always interested in hearing from
77 * people who own any of these cards:
78 * Xircom CreditCard 10Base-T (PS-CE2-10)
79 * Xircom CreditCard Ethernet + ModemII (CEM2)
80 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?)
81 *
82 * Thanks to all who assisted with the development and testing of the driver,
83 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru
84 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left
85 * out anyone who deserves a mention here.
86 *
87 * Special thanks to Ade Lovett for both hosting the mailing list and doing
88 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting
89 * the web pages.
90 *
91 * Author email: <scott@uk.freebsd.org>
92 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/
93 */
94
95
96 #include <sys/param.h>
97 #include <sys/errno.h>
98 #include <sys/kernel.h>
99 #include <sys/mbuf.h>
100 #include <sys/select.h>
101 #include <sys/socket.h>
102 #include <sys/sockio.h>
103 #include <sys/sysctl.h>
104 #include <sys/systm.h>
105 #include <sys/uio.h>
106 #include <sys/serialize.h>
107 #include <sys/module.h>
108 #include <sys/bus.h>
109 #include <sys/rman.h>
110 #include <sys/thread2.h>
111 #include <sys/interrupt.h>
112
113 #include <net/ethernet.h>
114 #include <net/if.h>
115 #include <net/ifq_var.h>
116 #include <net/if_arp.h>
117 #include <net/if_dl.h>
118 #include <net/if_media.h>
119 #include <net/if_mib.h>
120 #include <net/bpf.h>
121
122 #include "if_xereg.h"
123 #include "if_xevar.h"
124
125 /*
126 * MII command structure
127 */
128 struct xe_mii_frame {
129 u_int8_t mii_stdelim;
130 u_int8_t mii_opcode;
131 u_int8_t mii_phyaddr;
132 u_int8_t mii_regaddr;
133 u_int8_t mii_turnaround;
134 u_int16_t mii_data;
135 };
136
137 /*
138 * Media autonegotiation progress constants
139 */
140 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
141 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
142 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
143 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
144 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
145
146 /*
147 * Multicast hashing CRC constants
148 */
149 #define XE_CRC_POLY 0x04c11db6
150
151 /*
152 * Prototypes start here
153 */
154 static void xe_init (void *xscp);
155 static void xe_intr (void *xscp);
156 static void xe_start (struct ifnet *ifp, struct ifaltq_subque *);
157 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *);
158 static void xe_watchdog (struct ifnet *ifp);
159 static int xe_media_change (struct ifnet *ifp);
160 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp);
161 static timeout_t xe_setmedia;
162 static timeout_t xe_setmedia_serialized;
163 static void xe_reset (struct xe_softc *scp);
164 static void xe_stop (struct xe_softc *scp);
165 static void xe_enable_intr (struct xe_softc *scp);
166 static void xe_disable_intr (struct xe_softc *scp);
167 static void xe_set_multicast (struct xe_softc *scp);
168 static void xe_set_addr (struct xe_softc *scp, u_int8_t* addr, unsigned idx);
169 static void xe_set_hash (struct xe_softc *scp, u_int8_t* addr);
170 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
171
172 /*
173 * MII functions
174 */
175 static void xe_mii_sync (struct xe_softc *scp);
176 static int xe_mii_init (struct xe_softc *scp);
177 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt);
178 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame);
179 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame);
180 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg);
181 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data);
182
183 /* Debugging functions */
184 static void xe_reg_dump (struct xe_softc *scp) __unused;
185 static void xe_mii_dump (struct xe_softc *scp);
186
187 #define XE_DEBUG
188
189 #ifdef XE_DEBUG
190
191 /* sysctl vars */
192 SYSCTL_NODE(_hw, OID_AUTO, xe, CTLFLAG_RD, 0, "xe parameters");
193
194 /*
195 * Debug logging levels - set with hw.xe.debug sysctl
196 * 0 = None
197 * 1 = More hardware details, probe/attach progress
198 * 2 = Most function calls, ioctls and media selection progress
199 * 3 = Everything - interrupts, packets in/out and multicast address setup
200 */
201 int xe_debug = 1;
202 SYSCTL_INT(_hw_xe, OID_AUTO, debug, CTLFLAG_RW, &xe_debug, 0, "xe debug level");
203
204 #define DPRINTF(level, arg) if (xe_debug >= (level)) kprintf arg
205 #define IFPRINTF(level, arg) if (xe_debug >= (level)) if_printf arg
206 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg
207 #define XE_MII_DUMP(scp) if (xe_debug >= 3) xe_mii_dump(scp)
208 #define XE_REG_DUMP(scp) if (xe_debug >= 3) xe_reg_dump(scp)
209
210 #else /* !XE_DEBUG */
211
212 #define DPRINTF(level, arg)
213 #define IFPRINTF(level, arg)
214 #define DEVPRINTF(level, arg)
215 #define XE_REG_DUMP(scp)
216 #define XE_MII_DUMP(scp)
217
218 #endif /* XE_DEBUG */
219
220 /*
221 * The device entry is being removed, probably because someone ejected the
222 * card. The interface should have been brought down manually before calling
223 * this function; if not you may well lose packets. In any case, I shut down
224 * the card and the interface, and hope for the best.
225 */
226 int
227 xe_detach(device_t dev)
228 {
229 struct xe_softc *sc = device_get_softc(dev);
230 struct ifnet *ifp = &sc->arpcom.ac_if;
231
232 lwkt_serialize_enter(ifp->if_serializer);
233
234 ifp->if_flags &= ~IFF_RUNNING;
235 callout_stop(&sc->xe_timer);
236 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
237
238 lwkt_serialize_exit(ifp->if_serializer);
239
240 ether_ifdetach(ifp);
241 xe_deactivate(dev);
242
243 return 0;
244 }
245
246 /*
247 * Attach a device.
248 */
249 int
250 xe_attach (device_t dev)
251 {
252 struct xe_softc *scp = device_get_softc(dev);
253 int err;
254
255 DEVPRINTF(2, (dev, "attach\n"));
256
257 /* Fill in some private data */
258 scp->ifp = &scp->arpcom.ac_if;
259 scp->ifm = &scp->ifmedia;
260 scp->autoneg_status = XE_AUTONEG_NONE;
261
262 /* Initialise the ifnet structure */
263 scp->ifp->if_softc = scp;
264 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev));
265 scp->ifp->if_timer = 0;
266 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
267 scp->ifp->if_linkmib = &scp->mibdata;
268 scp->ifp->if_linkmiblen = sizeof scp->mibdata;
269 scp->ifp->if_start = xe_start;
270 scp->ifp->if_ioctl = xe_ioctl;
271 scp->ifp->if_watchdog = xe_watchdog;
272 scp->ifp->if_init = xe_init;
273 scp->ifp->if_baudrate = 100000000;
274 ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN);
275 ifq_set_ready(&scp->ifp->if_snd);
276
277 /* Initialise the ifmedia structure */
278 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
279 callout_init(&scp->xe_timer);
280
281 /* Add supported media types */
282 if (scp->mohawk) {
283 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
284 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
285 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
286 }
287 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
288 if (scp->ce2)
289 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
290 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
291
292 /* Default is to autoselect best supported media type */
293 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
294
295 /* Get the hardware into a known state */
296 xe_reset(scp);
297
298 /* Get hardware version numbers */
299 XE_SELECT_PAGE(4);
300 scp->version = XE_INB(XE_BOV);
301 if (scp->mohawk)
302 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
303 else
304 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
305
306 /* Print some useful information */
307 device_printf(dev, "%s %s, version 0x%02x/0x%02x%s%s\n",
308 scp->vendor,
309 scp->card_type,
310 scp->version,
311 scp->srev,
312 scp->mohawk ? ", 100Mbps capable" : "",
313 scp->modem ? ", with modem" : "");
314
315 if (scp->mohawk) {
316 XE_SELECT_PAGE(0x10);
317 DEVPRINTF(1, (dev, "DingoID=0x%04x, RevisionID=0x%04x, VendorID=0x%04x\n",
318 XE_INW(XE_DINGOID),
319 XE_INW(XE_RevID),
320 XE_INW(XE_VendorID)));
321 }
322 if (scp->ce2) {
323 XE_SELECT_PAGE(0x45);
324 DEVPRINTF(1, (dev, "CE2 version = 0x%#02x\n", XE_INB(XE_REV)));
325 }
326
327 /* Attach the interface */
328 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr, NULL);
329
330 ifq_set_cpuid(&scp->ifp->if_snd, rman_get_cpuid(scp->irq_res));
331
332 err = bus_setup_intr(dev, scp->irq_res, INTR_MPSAFE,
333 xe_intr, scp, &scp->intrhand,
334 scp->ifp->if_serializer);
335 if (err) {
336 device_printf(dev, "Setup intr failed\n");
337 ether_ifdetach(scp->ifp);
338 xe_deactivate(dev);
339 return err;
340 }
341
342 /* Done */
343 return 0;
344 }
345
346
347 /*
348 * Complete hardware intitialisation and enable output. Exits without doing
349 * anything if there's no address assigned to the card, or if media selection
350 * is in progress (the latter implies we've already run this function).
351 */
352 static void
353 xe_init(void *xscp) {
354 struct xe_softc *scp = xscp;
355 u_int i;
356
357 if (scp->autoneg_status != XE_AUTONEG_NONE) return;
358
359 IFPRINTF(2, (scp->ifp, "init\n"));
360
361 crit_enter();
362
363 /* Reset transmitter flags */
364 scp->tx_queued = 0;
365 scp->tx_tpr = 0;
366 scp->tx_timeouts = 0;
367 scp->tx_thres = 64;
368 scp->tx_min = ETHER_MIN_LEN - ETHER_CRC_LEN;
369 scp->ifp->if_timer = 0;
370
371 /* Soft reset the card */
372 XE_SELECT_PAGE(0);
373 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
374 DELAY(40000);
375 XE_OUTB(XE_CR, 0);
376 DELAY(40000);
377
378 if (scp->mohawk) {
379 /*
380 * set GP1 and GP2 as outputs (bits 2 & 3)
381 * set GP1 low to power on the ML6692 (bit 0)
382 * set GP2 high to power on the 10Mhz chip (bit 1)
383 */
384 XE_SELECT_PAGE(4);
385 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT|XE_GPR0_GP1_SELECT|XE_GPR0_GP2_OUT);
386 }
387
388 /* Shut off interrupts */
389 xe_disable_intr(scp);
390
391 /* Wait for everything to wake up */
392 DELAY(500000);
393
394 /* Check for PHY */
395 if (scp->mohawk)
396 scp->phy_ok = xe_mii_init(scp);
397
398 /* Disable 'source insertion' (not sure what that means) */
399 XE_SELECT_PAGE(0x42);
400 XE_OUTB(XE_SWC0, XE_SWC0_NO_SRC_INSERT);
401
402 /* Set 8K/24K Tx/Rx buffer split */
403 if (scp->srev != 1) {
404 XE_SELECT_PAGE(2);
405 XE_OUTW(XE_RBS, 0x2000);
406 }
407
408 /* Enable early transmit mode on Mohawk/Dingo */
409 if (scp->mohawk) {
410 XE_SELECT_PAGE(0x03);
411 XE_OUTW(XE_TPT, scp->tx_thres);
412 XE_SELECT_PAGE(0x01);
413 XE_OUTB(XE_ECR, XE_INB(XE_ECR) | XE_ECR_EARLY_TX);
414 }
415
416 /* Put MAC address in first 'individual address' register */
417 XE_SELECT_PAGE(0x50);
418 for (i = 0; i < 6; i++)
419 XE_OUTB(0x08 + i, scp->arpcom.ac_enaddr[scp->mohawk ? 5 - i : i]);
420
421 /* Set up multicast addresses */
422 xe_set_multicast(scp);
423
424 /* Fix the receive data offset -- reset can leave it off-by-one */
425 XE_SELECT_PAGE(0);
426 XE_OUTW(XE_DO, 0x2000);
427
428 /* Set interrupt masks */
429 XE_SELECT_PAGE(1);
430 XE_OUTB(XE_IMR0, XE_IMR0_TX_PACKET | XE_IMR0_MAC_INTR | XE_IMR0_RX_PACKET);
431
432 /* Set MAC interrupt masks */
433 XE_SELECT_PAGE(0x40);
434 XE_OUTB(XE_RX0Msk,
435 ~(XE_RX0M_RX_OVERRUN | XE_RX0M_CRC_ERROR
436 | XE_RX0M_ALIGN_ERROR | XE_RX0M_LONG_PACKET));
437 XE_OUTB(XE_TX0Msk,
438 ~(XE_TX0M_SQE_FAIL | XE_TX0M_LATE_COLLISION | XE_TX0M_TX_UNDERRUN
439 | XE_TX0M_16_COLLISIONS | XE_TX0M_NO_CARRIER));
440
441 /* Clear MAC status registers */
442 XE_SELECT_PAGE(0x40);
443 XE_OUTB(XE_RST0, 0x00);
444 XE_OUTB(XE_TXST0, 0x00);
445
446 /* Enable receiver and put MAC online */
447 XE_SELECT_PAGE(0x40);
448 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
449
450 /* Set up IMR, enable interrupts */
451 xe_enable_intr(scp);
452
453 /* Start media selection */
454 xe_setmedia_serialized(scp);
455
456 /* Enable output */
457 scp->ifp->if_flags |= IFF_RUNNING;
458 ifq_clr_oactive(&scp->ifp->if_snd);
459
460 crit_exit();
461 }
462
463
464 /*
465 * Start output on interface. Should be called at splimp() priority. Check
466 * that the output is idle (ie, OACTIVE is not set) before calling this
467 * function. If media selection is in progress we set OACTIVE ourselves
468 * and return immediately.
469 */
470 static void
471 xe_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) {
472 struct xe_softc *scp = ifp->if_softc;
473 struct mbuf *mbp;
474
475 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
476
477 if (scp->autoneg_status != XE_AUTONEG_NONE) {
478 ifq_set_oactive(&ifp->if_snd);
479 return;
480 }
481
482 IFPRINTF(3, (ifp, "start\n"));
483
484 /*
485 * Loop while there are packets to be sent, and space to send them.
486 */
487 while (1) {
488 /* Suck a packet off the send queue */
489 mbp = ifq_dequeue(&ifp->if_snd);
490 if (mbp == NULL) {
491 /*
492 * We are using the !OACTIVE flag to indicate to the outside
493 * world that we can accept an additional packet rather than
494 * that the transmitter is _actually_ active. Indeed, the
495 * transmitter may be active, but if we haven't filled all
496 * the buffers with data then we still want to accept more.
497 */
498 ifq_clr_oactive(&ifp->if_snd);
499 return;
500 }
501
502 if (xe_pio_write_packet(scp, mbp) != 0) {
503 ifq_set_oactive(&ifp->if_snd);
504 ifq_prepend(&ifp->if_snd, mbp);
505 return;
506 }
507
508 BPF_MTAP(ifp, mbp);
509
510 ifp->if_timer = 5; /* In case we don't hear from the card again */
511 scp->tx_queued++;
512
513 m_freem(mbp);
514 }
515 }
516
517
518 /*
519 * Process an ioctl request. Adapted from the ed driver.
520 */
521 static int
522 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) {
523 struct xe_softc *scp;
524 int error;
525
526 scp = ifp->if_softc;
527 error = 0;
528
529 crit_enter();
530
531 switch (command) {
532
533 case SIOCSIFFLAGS:
534 IFPRINTF(2, (ifp, "ioctl: SIOCSIFFLAGS: 0x%04x\n", ifp->if_flags));
535 /*
536 * If the interface is marked up and stopped, then start it. If it is
537 * marked down and running, then stop it.
538 */
539 if (ifp->if_flags & IFF_UP) {
540 if (!(ifp->if_flags & IFF_RUNNING)) {
541 xe_reset(scp);
542 xe_init(scp);
543 }
544 }
545 else {
546 if (ifp->if_flags & IFF_RUNNING)
547 xe_stop(scp);
548 }
549 /* FALL THROUGH (handle changes to PROMISC/ALLMULTI flags) */
550
551 case SIOCADDMULTI:
552 case SIOCDELMULTI:
553 IFPRINTF(2, (ifp, "ioctl: SIOC{ADD,DEL}MULTI\n"));
554 /*
555 * Multicast list has (maybe) changed; set the hardware filters
556 * accordingly.
557 */
558 xe_set_multicast(scp);
559 error = 0;
560 break;
561
562 case SIOCSIFMEDIA:
563 case SIOCGIFMEDIA:
564 IFPRINTF(3, (ifp, "ioctl: bounce to ifmedia_ioctl\n"));
565 /*
566 * Someone wants to get/set media options.
567 */
568 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
569 break;
570
571 default:
572 IFPRINTF(3, (ifp, "ioctl: bounce to ether_ioctl\n"));
573 error = ether_ioctl(ifp, command, data);
574 break;
575 }
576
577 crit_exit();
578
579 return error;
580 }
581
582
583 /*
584 * Card interrupt handler.
585 *
586 * This function is probably more complicated than it needs to be, as it
587 * attempts to deal with the case where multiple packets get sent between
588 * interrupts. This is especially annoying when working out the collision
589 * stats. Not sure whether this case ever really happens or not (maybe on a
590 * slow/heavily loaded machine?) so it's probably best to leave this like it
591 * is.
592 *
593 * Note that the crappy PIO used to get packets on and off the card means that
594 * you will spend a lot of time in this routine -- I can get my P150 to spend
595 * 90% of its time servicing interrupts if I really hammer the network. Could
596 * fix this, but then you'd start dropping/losing packets. The moral of this
597 * story? If you want good network performance _and_ some cycles left over to
598 * get your work done, don't buy a Xircom card. Or convince them to tell me
599 * how to do memory-mapped I/O :)
600 */
601 static void
602 xe_intr(void *xscp)
603 {
604 struct xe_softc *scp = (struct xe_softc *) xscp;
605 struct ifnet *ifp;
606 u_int8_t psr, isr, esr, rsr, rst0, txst0, txst1, coll;
607
608 ifp = &scp->arpcom.ac_if;
609
610 /* Disable interrupts */
611 if (scp->mohawk)
612 XE_OUTB(XE_CR, 0);
613
614 /* Cache current register page */
615 psr = XE_INB(XE_PR);
616
617 /* Read ISR to see what caused this interrupt */
618 while ((isr = XE_INB(XE_ISR)) != 0) {
619 /* 0xff might mean the card is no longer around */
620 if (isr == 0xff) {
621 IFPRINTF(3, (ifp, "intr: interrupt received for missing card?\n"));
622 break;
623 }
624
625 /* Read other status registers */
626 XE_SELECT_PAGE(0x40);
627 rst0 = XE_INB(XE_RST0);
628 XE_OUTB(XE_RST0, 0);
629 txst0 = XE_INB(XE_TXST0);
630 txst1 = XE_INB(XE_TXST1);
631 coll = txst1 & XE_TXST1_RETRY_COUNT;
632 XE_OUTB(XE_TXST0, 0);
633 XE_OUTB(XE_TXST1, 0);
634 XE_SELECT_PAGE(0);
635
636 IFPRINTF(3, (ifp,
637 "intr: ISR=0x%02x, RST=0x%02x, TXT=0x%02x%02x, COLL=0x%01x\n",
638 isr, rst0, txst1, txst0, coll));
639
640 /* Handle transmitted packet(s) */
641 if (isr & XE_ISR_TX_PACKET) {
642 u_int8_t tpr, sent;
643
644 /* Update packet count, accounting for rollover */
645 tpr = XE_INB(XE_TPR);
646 sent = -scp->tx_tpr + tpr;
647
648 /* Update statistics if we actually sent anything */
649 if (sent > 0) {
650 scp->tx_tpr = tpr;
651 scp->tx_queued -= sent;
652 IFNET_STAT_INC(ifp, opackets, sent);
653 IFNET_STAT_INC(ifp, collisions, coll);
654
655 /*
656 * According to the Xircom manual, Dingo will sometimes manage to
657 * transmit a packet with triggering an interrupt. If this happens,
658 * we have sent > 1 and the collision count only reflects collisions
659 * on the last packet sent (the one that triggered the interrupt).
660 * Collision stats might therefore be a bit low, but there doesn't
661 * seem to be anything we can do about that.
662 */
663 switch (coll) {
664 case 0:
665 break;
666 case 1:
667 scp->mibdata.dot3StatsSingleCollisionFrames++;
668 scp->mibdata.dot3StatsCollFrequencies[0]++;
669 break;
670 default:
671 scp->mibdata.dot3StatsMultipleCollisionFrames++;
672 scp->mibdata.dot3StatsCollFrequencies[coll-1]++;
673 }
674 }
675 ifp->if_timer = 0;
676 ifq_clr_oactive(&ifp->if_snd);
677 }
678
679 /* Handle most MAC interrupts */
680 if (isr & XE_ISR_MAC_INTR) {
681 #if 0
682 /* Carrier sense lost -- only in 10Mbit HDX mode */
683 if (txst0 & XE_TXST0_NO_CARRIER || !(txst1 & XE_TXST1_LINK_STATUS)) {
684 /* XXX - Need to update media status here */
685 device_printf(scp->dev, "no carrier\n");
686 ifp->if_oerrors++;
687 scp->mibdata.dot3StatsCarrierSenseErrors++;
688 }
689 #endif
690 /* Excessive collisions -- try sending again */
691 if (txst0 & XE_TXST0_16_COLLISIONS) {
692 IFNET_STAT_INC(ifp, collisions, 16);
693 IFNET_STAT_INC(ifp, oerrors, 1);
694 scp->mibdata.dot3StatsExcessiveCollisions++;
695 scp->mibdata.dot3StatsMultipleCollisionFrames++;
696 scp->mibdata.dot3StatsCollFrequencies[15]++;
697 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
698 }
699 /* Transmit underrun -- increase early transmit threshold */
700 if (txst0 & XE_TXST0_TX_UNDERRUN && scp->mohawk) {
701 IFPRINTF(1, (ifp, "transmit underrun"));
702 if (scp->tx_thres < ETHER_MAX_LEN) {
703 if ((scp->tx_thres += 64) > ETHER_MAX_LEN)
704 scp->tx_thres = ETHER_MAX_LEN;
705 DPRINTF(1, (": increasing transmit threshold to %u", scp->tx_thres));
706 XE_SELECT_PAGE(0x3);
707 XE_OUTW(XE_TPT, scp->tx_thres);
708 XE_SELECT_PAGE(0x0);
709 }
710 DPRINTF(1, ("\n"));
711 IFNET_STAT_INC(ifp, oerrors, 1);
712 scp->mibdata.dot3StatsInternalMacTransmitErrors++;
713 }
714 /* Late collision -- just complain about it */
715 if (txst0 & XE_TXST0_LATE_COLLISION) {
716 if_printf(ifp, "late collision\n");
717 IFNET_STAT_INC(ifp, oerrors, 1);
718 scp->mibdata.dot3StatsLateCollisions++;
719 }
720 /* SQE test failure -- just complain about it */
721 if (txst0 & XE_TXST0_SQE_FAIL) {
722 if_printf(ifp, "SQE test failure\n");
723 IFNET_STAT_INC(ifp, oerrors, 1);
724 scp->mibdata.dot3StatsSQETestErrors++;
725 }
726 /* Packet too long -- what happens to these */
727 if (rst0 & XE_RST0_LONG_PACKET) {
728 if_printf(ifp, "received giant packet\n");
729 IFNET_STAT_INC(ifp, ierrors, 1);
730 scp->mibdata.dot3StatsFrameTooLongs++;
731 }
732 /* CRC error -- packet dropped */
733 if (rst0 & XE_RST0_CRC_ERROR) {
734 if_printf(ifp, "CRC error\n");
735 IFNET_STAT_INC(ifp, ierrors, 1);
736 scp->mibdata.dot3StatsFCSErrors++;
737 }
738 }
739
740 /* Handle received packet(s) */
741 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
742 rsr = XE_INB(XE_RSR);
743 IFPRINTF(3, (ifp, "intr: ESR=0x%02x, RSR=0x%02x\n", esr, rsr));
744
745 /* Make sure packet is a good one */
746 if (rsr & XE_RSR_RX_OK) {
747 struct ether_header *ehp;
748 struct mbuf *mbp;
749 u_int16_t len;
750
751 len = XE_INW(XE_RBC) - ETHER_CRC_LEN;
752
753 IFPRINTF(3, (ifp, "intr: receive length = %d\n", len));
754
755 if (len == 0) {
756 IFNET_STAT_INC(ifp, iqdrops, 1);
757 continue;
758 }
759
760 /*
761 * Allocate mbuf to hold received packet. If the mbuf header isn't
762 * big enough, we attach an mbuf cluster to hold the packet. Note the
763 * +=2 to align the packet data on a 32-bit boundary, and the +3 to
764 * allow for the possibility of reading one more byte than the actual
765 * packet length (we always read 16-bit words).
766 * XXX - Surely there's a better way to do this alignment?
767 */
768 MGETHDR(mbp, MB_DONTWAIT, MT_DATA);
769 if (mbp == NULL) {
770 IFNET_STAT_INC(ifp, iqdrops, 1);
771 continue;
772 }
773
774 if (len + 3 > MHLEN) {
775 MCLGET(mbp, MB_DONTWAIT);
776 if ((mbp->m_flags & M_EXT) == 0) {
777 m_freem(mbp);
778 IFNET_STAT_INC(ifp, iqdrops, 1);
779 continue;
780 }
781 }
782
783 mbp->m_data += 2;
784 ehp = mtod(mbp, struct ether_header *);
785
786 /*
787 * Now get the packet in PIO mode, including the Ethernet header but
788 * omitting the trailing CRC.
789 */
790
791 /*
792 * Work around a bug in CE2 cards. There seems to be a problem with
793 * duplicated and extraneous bytes in the receive buffer, but without
794 * any real documentation for the CE2 it's hard to tell for sure.
795 * XXX - Needs testing on CE2 hardware
796 */
797 if (scp->srev == 0) {
798 u_short rhs;
799
800 XE_SELECT_PAGE(5);
801 rhs = XE_INW(XE_RHSA);
802 XE_SELECT_PAGE(0);
803
804 rhs += 3; /* Skip control info */
805
806 if (rhs >= 0x8000)
807 rhs = 0;
808
809 if (rhs + len > 0x8000) {
810 int i;
811
812 for (i = 0; i < len; i++, rhs++) {
813 ((char *)ehp)[i] = XE_INB(XE_EDP);
814 if (rhs == 0x8000) {
815 rhs = 0;
816 i--;
817 }
818 }
819 }
820 else
821 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
822 (u_int16_t *) ehp, (len + 1) >> 1);
823 }
824 else
825 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
826 (u_int16_t *) ehp, (len + 1) >> 1);
827
828 /* Deliver packet to upper layers */
829 mbp->m_pkthdr.rcvif = ifp;
830 mbp->m_pkthdr.len = mbp->m_len = len;
831 ifp->if_input(ifp, mbp);
832 IFNET_STAT_INC(ifp, ipackets, 1);
833 }
834 else if (rsr & XE_RSR_ALIGN_ERROR) {
835 /* Packet alignment error -- drop packet */
836 if_printf(ifp, "alignment error\n");
837 scp->mibdata.dot3StatsAlignmentErrors++;
838 IFNET_STAT_INC(ifp, ierrors, 1);
839 }
840
841 /* Skip to next packet, if there is one */
842 XE_OUTW(XE_DO, 0x8000);
843 }
844
845 /* Clear receiver overruns now we have some free buffer space */
846 if (rst0 & XE_RST0_RX_OVERRUN) {
847 IFPRINTF(1, (ifp, "receive overrun\n"));
848 IFNET_STAT_INC(ifp, ierrors, 1);
849 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
850 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
851 }
852 }
853
854 /* Restore saved page */
855 XE_SELECT_PAGE(psr);
856
857 /* Re-enable interrupts */
858 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR);
859 }
860
861
862 /*
863 * Device timeout/watchdog routine. Called automatically if we queue a packet
864 * for transmission but don't get an interrupt within a specified timeout
865 * (usually 5 seconds). When this happens we assume the worst and reset the
866 * card.
867 */
868 static void
869 xe_watchdog(struct ifnet *ifp) {
870 struct xe_softc *scp = ifp->if_softc;
871
872 if_printf(ifp, "watchdog timeout; resetting card\n");
873 scp->tx_timeouts++;
874 IFNET_STAT_INC(ifp, oerrors, scp->tx_queued);
875 xe_stop(scp);
876 xe_reset(scp);
877 xe_init(scp);
878 }
879
880
881 /*
882 * Change media selection.
883 */
884 static int
885 xe_media_change(struct ifnet *ifp) {
886 struct xe_softc *scp = ifp->if_softc;
887
888 IFPRINTF(2, (ifp, "media_change\n"));
889
890 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
891 return(EINVAL);
892
893 /*
894 * Some card/media combos aren't always possible -- filter those out here.
895 */
896 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
897 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
898 return (EINVAL);
899
900 xe_setmedia_serialized(scp);
901
902 return 0;
903 }
904
905
906 /*
907 * Return current media selection.
908 */
909 static void
910 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
911
912 IFPRINTF(3, (ifp, "media_status\n"));
913
914 /* XXX - This is clearly wrong. Will fix once I have CE2 working */
915 mrp->ifm_status = IFM_AVALID | IFM_ACTIVE;
916 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
917 }
918
919 static
920 void
921 xe_setmedia(void *xscp)
922 {
923 struct xe_softc *scp = xscp;
924
925 lwkt_serialize_enter(scp->arpcom.ac_if.if_serializer);
926 xe_setmedia_serialized(xscp);
927 lwkt_serialize_exit(scp->arpcom.ac_if.if_serializer);
928 }
929
930 /*
931 * Select active media.
932 */
933 static
934 void
935 xe_setmedia_serialized(void *xscp)
936 {
937 struct xe_softc *scp = xscp;
938 u_int16_t bmcr, bmsr, anar, lpar;
939
940 IFPRINTF(2, (scp->ifp, "setmedia\n"));
941
942 /* Cancel any pending timeout */
943 callout_stop(&scp->xe_timer);
944 xe_disable_intr(scp);
945
946 /* Select media */
947 scp->media = IFM_ETHER;
948 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
949
950 case IFM_AUTO: /* Autoselect media */
951 scp->media = IFM_ETHER|IFM_AUTO;
952
953 /*
954 * Autoselection is really awful. It goes something like this:
955 *
956 * Wait until the transmitter goes idle (2sec timeout).
957 * Reset card
958 * IF a 100Mbit PHY exists
959 * Start NWAY autonegotiation (3.5sec timeout)
960 * IF that succeeds
961 * Select 100baseTX or 10baseT, whichever was detected
962 * ELSE
963 * Reset card
964 * IF a 100Mbit PHY exists
965 * Try to force a 100baseTX link (3sec timeout)
966 * IF that succeeds
967 * Select 100baseTX
968 * ELSE
969 * Disable the PHY
970 * ENDIF
971 * ENDIF
972 * ENDIF
973 * ENDIF
974 * IF nothing selected so far
975 * IF a 100Mbit PHY exists
976 * Select 10baseT
977 * ELSE
978 * Select 10baseT or 10base2, whichever is connected
979 * ENDIF
980 * ENDIF
981 */
982 switch (scp->autoneg_status) {
983
984 case XE_AUTONEG_NONE:
985 IFPRINTF(2, (scp->ifp, "Waiting for idle transmitter\n"));
986 ifq_set_oactive(&scp->arpcom.ac_if.if_snd);
987 scp->autoneg_status = XE_AUTONEG_WAITING;
988 /* FALL THROUGH */
989
990 case XE_AUTONEG_WAITING:
991 if (scp->tx_queued != 0) {
992 callout_reset(&scp->xe_timer, hz / 2, xe_setmedia, scp);
993 return;
994 }
995 if (scp->phy_ok) {
996 IFPRINTF(2, (scp->ifp, "Starting autonegotiation\n"));
997 bmcr = xe_phy_readreg(scp, PHY_BMCR);
998 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
999 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1000 anar = xe_phy_readreg(scp, PHY_ANAR);
1001 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL);
1002 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF;
1003 xe_phy_writereg(scp, PHY_ANAR, anar);
1004 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
1005 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1006 scp->autoneg_status = XE_AUTONEG_STARTED;
1007 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp);
1008 return;
1009 }
1010 else {
1011 scp->autoneg_status = XE_AUTONEG_FAIL;
1012 }
1013 break;
1014
1015 case XE_AUTONEG_STARTED:
1016 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1017 lpar = xe_phy_readreg(scp, PHY_LPAR);
1018 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) {
1019 IFPRINTF(2, (scp->ifp, "Autonegotiation complete!\n"));
1020 /*
1021 * XXX - Shouldn't have to do this, but (on my hub at least) the
1022 * XXX - transmitter won't work after a successful autoneg. So we see
1023 * XXX - what the negotiation result was and force that mode. I'm
1024 * XXX - sure there is an easy fix for this.
1025 */
1026 if (lpar & PHY_LPAR_100BTXHALF) {
1027 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1028 XE_MII_DUMP(scp);
1029 XE_SELECT_PAGE(2);
1030 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1031 scp->media = IFM_ETHER|IFM_100_TX;
1032 scp->autoneg_status = XE_AUTONEG_NONE;
1033 }
1034 else {
1035 /*
1036 * XXX - Bit of a hack going on in here.
1037 * XXX - This is derived from Ken Hughes patch to the Linux driver
1038 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
1039 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
1040 * XXX - these are the things we need to find out.
1041 */
1042 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1043 XE_SELECT_PAGE(2);
1044 /* BEGIN HACK */
1045 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1046 XE_SELECT_PAGE(0x42);
1047 XE_OUTB(XE_SWC1, 0x80);
1048 scp->media = IFM_ETHER|IFM_10_T;
1049 scp->autoneg_status = XE_AUTONEG_NONE;
1050 /* END HACK */
1051 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
1052 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
1053 }
1054 }
1055 else {
1056 IFPRINTF(2, (scp->ifp, "Autonegotiation failed; trying 100baseTX\n"));
1057 XE_MII_DUMP(scp);
1058 if (scp->phy_ok) {
1059 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1060 scp->autoneg_status = XE_AUTONEG_100TX;
1061 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp);
1062 return;
1063 }
1064 else {
1065 scp->autoneg_status = XE_AUTONEG_FAIL;
1066 }
1067 }
1068 break;
1069
1070 case XE_AUTONEG_100TX:
1071 xe_phy_readreg(scp, PHY_BMSR);
1072 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1073 if (bmsr & PHY_BMSR_LINKSTAT) {
1074 IFPRINTF(2, (scp->ifp, "Got 100baseTX link!\n"));
1075 XE_MII_DUMP(scp);
1076 XE_SELECT_PAGE(2);
1077 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1078 scp->media = IFM_ETHER|IFM_100_TX;
1079 scp->autoneg_status = XE_AUTONEG_NONE;
1080 }
1081 else {
1082 IFPRINTF(2, (scp->ifp, "Autonegotiation failed; disabling PHY\n"));
1083 XE_MII_DUMP(scp);
1084 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1085 XE_SELECT_PAGE(2);
1086 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1087 scp->autoneg_status = XE_AUTONEG_FAIL;
1088 }
1089 break;
1090 }
1091
1092 /*
1093 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1094 * either autonegotiation failed, or never got started to begin with. In
1095 * either case, select a suitable 10Mbit media and hope it works. We
1096 * don't need to reset the card again, since it will have been done
1097 * already by the big switch above.
1098 */
1099 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1100 IFPRINTF(2, (scp->ifp, "Selecting 10baseX\n"));
1101 if (scp->mohawk) {
1102 XE_SELECT_PAGE(0x42);
1103 XE_OUTB(XE_SWC1, 0x80);
1104 scp->media = IFM_ETHER|IFM_10_T;
1105 scp->autoneg_status = XE_AUTONEG_NONE;
1106 }
1107 else {
1108 XE_SELECT_PAGE(4);
1109 XE_OUTB(XE_GPR0, 4);
1110 DELAY(50000);
1111 XE_SELECT_PAGE(0x42);
1112 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0);
1113 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1114 scp->autoneg_status = XE_AUTONEG_NONE;
1115 }
1116 }
1117 break;
1118
1119
1120 /*
1121 * If a specific media has been requested, we just reset the card and
1122 * select it (one small exception -- if 100baseTX is requested by there is
1123 * no PHY, we fall back to 10baseT operation).
1124 */
1125 case IFM_100_TX: /* Force 100baseTX */
1126 if (scp->phy_ok) {
1127 IFPRINTF(2, (scp->ifp, "Selecting 100baseTX\n"));
1128 XE_SELECT_PAGE(0x42);
1129 XE_OUTB(XE_SWC1, 0);
1130 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1131 XE_SELECT_PAGE(2);
1132 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1133 scp->media |= IFM_100_TX;
1134 break;
1135 }
1136 /* FALLTHROUGH */
1137
1138 case IFM_10_T: /* Force 10baseT */
1139 IFPRINTF(2, (scp->ifp, "Selecting 10baseT\n"));
1140 if (scp->phy_ok) {
1141 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1142 XE_SELECT_PAGE(2);
1143 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1144 }
1145 XE_SELECT_PAGE(0x42);
1146 XE_OUTB(XE_SWC1, 0x80);
1147 scp->media |= IFM_10_T;
1148 break;
1149
1150 case IFM_10_2:
1151 IFPRINTF(2, (scp->ifp, "Selecting 10base2\n"));
1152 XE_SELECT_PAGE(0x42);
1153 XE_OUTB(XE_SWC1, 0xc0);
1154 scp->media |= IFM_10_2;
1155 break;
1156 }
1157
1158
1159 /*
1160 * Finally, the LEDs are set to match whatever media was chosen and the
1161 * transmitter is unblocked.
1162 */
1163 IFPRINTF(2, (scp->ifp, "Setting LEDs\n"));
1164 XE_SELECT_PAGE(2);
1165 switch (IFM_SUBTYPE(scp->media)) {
1166 case IFM_100_TX:
1167 case IFM_10_T:
1168 XE_OUTB(XE_LED, 0x3b);
1169 if (scp->dingo)
1170 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1171 break;
1172
1173 case IFM_10_2:
1174 XE_OUTB(XE_LED, 0x3a);
1175 break;
1176 }
1177
1178 /* Restart output? */
1179 xe_enable_intr(scp);
1180 ifq_clr_oactive(&scp->ifp->if_snd);
1181 if_devstart(scp->ifp);
1182 }
1183
1184
1185 /*
1186 * Hard reset (power cycle) the card.
1187 */
1188 static void
1189 xe_reset(struct xe_softc *scp) {
1190 IFPRINTF(2, (scp->ifp, "hard_reset\n"));
1191
1192 crit_enter();
1193
1194 /* Power down */
1195 XE_SELECT_PAGE(4);
1196 XE_OUTB(XE_GPR1, 0);
1197 DELAY(40000);
1198
1199 /* Power up again */
1200 if (scp->mohawk)
1201 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN);
1202 else
1203 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN|XE_GPR1_AIC);
1204
1205 DELAY(40000);
1206 XE_SELECT_PAGE(0);
1207
1208 crit_exit();
1209 }
1210
1211
1212 /*
1213 * Take interface offline. This is done by powering down the device, which I
1214 * assume means just shutting down the transceiver and Ethernet logic. This
1215 * requires a _hard_ reset to recover from, as we need to power up again.
1216 */
1217 static void
1218 xe_stop(struct xe_softc *scp) {
1219 IFPRINTF(2, (scp->ifp, "stop\n"));
1220
1221 crit_enter();
1222
1223 /*
1224 * Shut off interrupts.
1225 */
1226 xe_disable_intr(scp);
1227
1228 /*
1229 * Power down.
1230 */
1231 XE_SELECT_PAGE(4);
1232 XE_OUTB(XE_GPR1, 0);
1233 XE_SELECT_PAGE(0);
1234 if (scp->mohawk) {
1235 /*
1236 * set GP1 and GP2 as outputs (bits 2 & 3)
1237 * set GP1 high to power on the ML6692 (bit 0)
1238 * set GP2 low to power on the 10Mhz chip (bit 1)
1239 */
1240 XE_SELECT_PAGE(4);
1241 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT|XE_GPR0_GP1_SELECT|XE_GPR0_GP1_OUT);
1242 }
1243
1244 /*
1245 * ~IFF_RUNNING == interface down.
1246 */
1247 scp->ifp->if_flags &= ~IFF_RUNNING;
1248 ifq_clr_oactive(&scp->ifp->if_snd);
1249 scp->ifp->if_timer = 0;
1250
1251 crit_exit();
1252 }
1253
1254
1255 /*
1256 * Enable interrupts from the card.
1257 */
1258 static void
1259 xe_enable_intr(struct xe_softc *scp) {
1260 IFPRINTF(2, (scp->ifp, "enable_intr\n"));
1261
1262 XE_SELECT_PAGE(0);
1263 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1264 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1265 if (!(XE_INB(0x10) & 0x01)) {
1266 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1267 }
1268 }
1269 }
1270
1271
1272 /*
1273 * Disable interrupts from the card.
1274 */
1275 static void
1276 xe_disable_intr(struct xe_softc *scp) {
1277 IFPRINTF(2, (scp->ifp, "disable_intr\n"));
1278
1279 XE_SELECT_PAGE(0);
1280 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1281 if (scp->modem && !scp->dingo) { /* More magic */
1282 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1283 }
1284 }
1285
1286
1287 /*
1288 * Set up multicast filter and promiscuous modes.
1289 */
1290 static void
1291 xe_set_multicast(struct xe_softc *scp) {
1292 struct ifnet *ifp;
1293 struct ifmultiaddr *ifma;
1294 u_int count, i;
1295
1296 ifp = &scp->arpcom.ac_if;
1297
1298 IFPRINTF(2, (ifp, "set_multicast\n"));
1299
1300 XE_SELECT_PAGE(0x42);
1301
1302 /* Handle PROMISC flag */
1303 if (ifp->if_flags & IFF_PROMISC) {
1304 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_PROMISCUOUS);
1305 return;
1306 }
1307 else
1308 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_PROMISCUOUS);
1309
1310 /* Handle ALLMULTI flag */
1311 if (ifp->if_flags & IFF_ALLMULTI) {
1312 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_ALLMULTI);
1313 return;
1314 }
1315 else
1316 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI);
1317
1318 /* Iterate over multicast address list */
1319 count = 0;
1320 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1321 if (ifma->ifma_addr->sa_family != AF_LINK)
1322 continue;
1323
1324 count++;
1325
1326 if (count < 10)
1327 /* First 9 use Individual Addresses for exact matching */
1328 xe_set_addr(scp, LLADDR((struct sockaddr_dl *)ifma->ifma_addr), count);
1329 else
1330 if (scp->mohawk)
1331 /* Use hash filter on Mohawk and Dingo */
1332 xe_set_hash(scp, LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1333 else
1334 /* Nowhere else to put them on CE2 */
1335 break;
1336 }
1337
1338 IFPRINTF(2, (ifp, "set_multicast: count = %u\n", count));
1339
1340 /* Now do some cleanup and enable multicast handling as needed */
1341 if (count == 0) {
1342 /* Disable all multicast handling */
1343
1344 XE_SELECT_PAGE(0x42);
1345 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~(XE_SWC1_IA_ENABLE|XE_SWC1_ALLMULTI));
1346 if (scp->mohawk) {
1347 XE_SELECT_PAGE(0x02);
1348 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1349 }
1350 }
1351 else if (count < 10) {
1352 /* Full in any unused Individual Addresses with our MAC address */
1353 for (i = count + 1; i < 10; i++)
1354 xe_set_addr(scp, (u_int8_t *)(&scp->arpcom.ac_enaddr), i);
1355 /* Enable Individual Address matching only */
1356 XE_SELECT_PAGE(0x42);
1357 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | XE_SWC1_IA_ENABLE);
1358 if (scp->mohawk) {
1359 XE_SELECT_PAGE(0x02);
1360 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1361 }
1362 }
1363 else {
1364 if (scp->mohawk) {
1365 /* Check whether hash table is full */
1366 XE_SELECT_PAGE(0x58);
1367 for (i = 0x08; i < 0x10; i++)
1368 if (XE_INB(i) != 0xff)
1369 break;
1370 if (i == 0x10) {
1371 /* Hash table full - enable promiscuous multicast matching */
1372 XE_SELECT_PAGE(0x42);
1373 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI);
1374 XE_SELECT_PAGE(0x02);
1375 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1376 }
1377 else {
1378 /* Enable hash table and Individual Address matching */
1379 XE_SELECT_PAGE(0x42);
1380 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | XE_SWC1_IA_ENABLE);
1381 XE_SELECT_PAGE(0x02);
1382 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | XE_MSR_HASH_TABLE);
1383 }
1384 }
1385 else {
1386 /* Enable promiscuous multicast matching */
1387 XE_SELECT_PAGE(0x42);
1388 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI);
1389 }
1390 }
1391 XE_SELECT_PAGE(0);
1392 }
1393
1394
1395 /*
1396 * Copy the Ethernet multicast address in addr to the on-chip registers for
1397 * Individual Address idx. Assumes that addr is really a multicast address
1398 * and that idx > 0 (slot 0 is always used for the card MAC address).
1399 */
1400 static void
1401 xe_set_addr(struct xe_softc *scp, u_int8_t* addr, unsigned idx) {
1402 uint8_t page, reg;
1403 u_int i;
1404
1405 /*
1406 * Individual Addresses are stored in registers 8-F of pages 0x50-0x57. IA1
1407 * therefore starts at register 0xE on page 0x50. The expressions below
1408 * compute the starting page and register for any IA index > 0.
1409 */
1410 --idx;
1411 page = 0x50 + idx%4 + idx/4*3;
1412 reg = 0x0e - 2 * (idx%4);
1413
1414 IFPRINTF(3, (scp->ifp, "set_addr: idx = %u, page = 0x%02x, reg = 0x%02x\n",
1415 idx+1, page, reg));
1416
1417 /*
1418 * Copy the IA bytes. Note that the byte order is reversed for Mohawk and
1419 * Dingo wrt. CE2 hardware.
1420 */
1421 XE_SELECT_PAGE(page);
1422 for (i = 0; i < 6; i++) {
1423 #ifdef XE_DEBUG
1424 if (i > 0) {
1425 DPRINTF(3, (":%02x", addr[i]));
1426 } else {
1427 IFPRINTF(3, (scp->ifp, "set_addr: %02x", addr[0]));
1428 }
1429 #endif
1430 XE_OUTB(reg, addr[scp->mohawk ? 5 - i : i]);
1431 if (++reg == 0x10) {
1432 reg = 0x08;
1433 XE_SELECT_PAGE(++page);
1434 }
1435 }
1436 DPRINTF(3, ("\n"));
1437 }
1438
1439
1440 /*
1441 * Set the appropriate bit in the multicast hash table for the supplied
1442 * Ethernet multicast address addr. Assumes that addr is really a multicast
1443 * address.
1444 */
1445 static void
1446 xe_set_hash(struct xe_softc* scp, u_int8_t* addr) {
1447 u_int32_t crc = 0xffffffff;
1448 u_int8_t bit, byte, crc31, idx;
1449 u_int i, j;
1450
1451 /* Compute CRC of the address -- standard Ethernet CRC function */
1452 for (i = 0; i < 6; i++) {
1453 byte = addr[i];
1454 for (j = 1; j <= 8; j++) {
1455 if (crc & 0x80000000)
1456 crc31 = 0x01;
1457 else
1458 crc31 = 0;
1459 bit = crc31 ^ (byte & 0x01);
1460 crc <<= 1;
1461 byte >>= 1;
1462 if (bit)
1463 crc = (crc ^ XE_CRC_POLY)|1;
1464 }
1465 }
1466
1467 IFPRINTF(3, (scp->ifp, "set_hash: CRC = 0x%08x\n", crc));
1468
1469 /* Hash table index = 6 msbs of CRC, reversed */
1470 for (i = 0, idx = 0; i < 6; i++) {
1471 idx >>= 1;
1472 if (crc & 0x80000000) {
1473 idx |= 0x20;
1474 }
1475 crc <<= 1;
1476 }
1477
1478 /* Top 3 bits of idx give register - 8, bottom 3 give bit within register */
1479 byte = idx >> 3 | 0x08;
1480 bit = 0x01 << (idx & 0x07);
1481
1482 IFPRINTF(3, (scp->ifp,
1483 "set_hash: idx = 0x%02x, byte = 0x%02x, bit = 0x%02x\n",
1484 idx, byte, bit));
1485
1486 XE_SELECT_PAGE(0x58);
1487 XE_OUTB(byte, XE_INB(byte) | bit);
1488 }
1489
1490
1491 /*
1492 * Write an outgoing packet to the card using programmed I/O.
1493 */
1494 static int
1495 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1496 u_int len, pad;
1497 u_char wantbyte;
1498 u_int8_t *data;
1499 u_int8_t savebyte[2];
1500
1501 /* Get total packet length */
1502 if (mbp->m_flags & M_PKTHDR)
1503 len = mbp->m_pkthdr.len;
1504 else {
1505 struct mbuf* mbp2 = mbp;
1506 for (len = 0; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1507 }
1508
1509 IFPRINTF(3, (scp->ifp, "pio_write_packet: len = %u\n", len));
1510
1511 /* Packets < minimum length may need to be padded out */
1512 pad = 0;
1513 if (len < scp->tx_min) {
1514 pad = scp->tx_min - len;
1515 len = scp->tx_min;
1516 }
1517
1518 /* Check transmit buffer space */
1519 XE_SELECT_PAGE(0);
1520 XE_OUTW(XE_TRS, len+2); /* Only effective on rev. 1 CE2 cards */
1521 if ((XE_INW(XE_TSO) & 0x7fff) <= len + 2)
1522 return 1;
1523
1524 /* Send packet length to card */
1525 XE_OUTW(XE_EDP, len);
1526
1527 /*
1528 * Write packet to card using PIO (code stolen from the ed driver)
1529 */
1530 wantbyte = 0;
1531 while (mbp != NULL) {
1532 len = mbp->m_len;
1533 if (len > 0) {
1534 data = mtod(mbp, caddr_t);
1535 if (wantbyte) { /* Finish the last word */
1536 savebyte[1] = *data;
1537 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1538 data++;
1539 len--;
1540 wantbyte = 0;
1541 }
1542 if (len > 1) { /* Output contiguous words */
1543 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1544 len >> 1);
1545 data += len & ~1;
1546 len &= 1;
1547 }
1548 if (len == 1) { /* Save last byte, if necessary */
1549 savebyte[0] = *data;
1550 wantbyte = 1;
1551 }
1552 }
1553 mbp = mbp->m_next;
1554 }
1555
1556 /*
1557 * Send last byte of odd-length packets
1558 */
1559 if (wantbyte)
1560 XE_OUTB(XE_EDP, savebyte[0]);
1561
1562 /*
1563 * Can just tell CE3 cards to send; short packets will be padded out with
1564 * random cruft automatically. For CE2, manually pad the packet with
1565 * garbage; it will be sent when the required number or bytes have been
1566 * delivered to the card.
1567 */
1568 if (scp->mohawk)
1569 XE_OUTB(XE_CR, XE_CR_TX_PACKET | XE_CR_RESTART_TX | XE_CR_ENABLE_INTR);
1570 else if (pad > 0) {
1571 if (pad & 0x01)
1572 XE_OUTB(XE_EDP, 0xaa);
1573 pad >>= 1;
1574 while (pad > 0) {
1575 XE_OUTW(XE_EDP, 0xdead);
1576 pad--;
1577 }
1578 }
1579
1580 return 0;
1581 }
1582
1583
1584 /**************************************************************
1585 * *
1586 * M I I F U N C T I O N S *
1587 * *
1588 **************************************************************/
1589
1590 /*
1591 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1592 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1593 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1594 * XXX - some kind of common MII-handling code, shared by all drivers. But
1595 * XXX - that's a whole other mission.
1596 */
1597 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1598 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1599
1600
1601 /*
1602 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1603 */
1604 static void
1605 xe_mii_sync(struct xe_softc *scp) {
1606 int i;
1607
1608 XE_SELECT_PAGE(2);
1609 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1610
1611 for (i = 0; i < 32; i++) {
1612 XE_MII_SET(XE_MII_CLK);
1613 DELAY(1);
1614 XE_MII_CLR(XE_MII_CLK);
1615 DELAY(1);
1616 }
1617 }
1618
1619
1620 /*
1621 * Look for a MII-compliant PHY. If we find one, reset it.
1622 */
1623 static int
1624 xe_mii_init(struct xe_softc *scp) {
1625 u_int16_t status;
1626
1627 status = xe_phy_readreg(scp, PHY_BMSR);
1628 if ((status & 0xff00) != 0x7800) {
1629 IFPRINTF(2, (scp->ifp, "no PHY found, %0x\n", status));
1630 return 0;
1631 }
1632 else {
1633 IFPRINTF(2, (scp->ifp, "PHY OK!\n"));
1634
1635 /* Reset the PHY */
1636 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1637 DELAY(500);
1638 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1639 XE_MII_DUMP(scp);
1640 return 1;
1641 }
1642 }
1643
1644
1645 /*
1646 * Clock a series of bits through the MII.
1647 */
1648 static void
1649 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1650 int i;
1651
1652 XE_SELECT_PAGE(2);
1653 XE_MII_CLR(XE_MII_CLK);
1654
1655 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1656 if (bits & i) {
1657 XE_MII_SET(XE_MII_WRD);
1658 } else {
1659 XE_MII_CLR(XE_MII_WRD);
1660 }
1661 DELAY(1);
1662 XE_MII_CLR(XE_MII_CLK);
1663 DELAY(1);
1664 XE_MII_SET(XE_MII_CLK);
1665 }
1666 }
1667
1668
1669 /*
1670 * Read an PHY register through the MII.
1671 */
1672 static int
1673 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1674 int i, ack;
1675
1676 crit_enter();
1677
1678 /*
1679 * Set up frame for RX.
1680 */
1681 frame->mii_stdelim = XE_MII_STARTDELIM;
1682 frame->mii_opcode = XE_MII_READOP;
1683 frame->mii_turnaround = 0;
1684 frame->mii_data = 0;
1685
1686 XE_SELECT_PAGE(2);
1687 XE_OUTB(XE_GPR2, 0);
1688
1689 /*
1690 * Turn on data xmit.
1691 */
1692 XE_MII_SET(XE_MII_DIR);
1693
1694 xe_mii_sync(scp);
1695
1696 /*
1697 * Send command/address info.
1698 */
1699 xe_mii_send(scp, frame->mii_stdelim, 2);
1700 xe_mii_send(scp, frame->mii_opcode, 2);
1701 xe_mii_send(scp, frame->mii_phyaddr, 5);
1702 xe_mii_send(scp, frame->mii_regaddr, 5);
1703
1704 /* Idle bit */
1705 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1706 DELAY(1);
1707 XE_MII_SET(XE_MII_CLK);
1708 DELAY(1);
1709
1710 /* Turn off xmit. */
1711 XE_MII_CLR(XE_MII_DIR);
1712
1713 /* Check for ack */
1714 XE_MII_CLR(XE_MII_CLK);
1715 DELAY(1);
1716 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1717 XE_MII_SET(XE_MII_CLK);
1718 DELAY(1);
1719
1720 /*
1721 * Now try reading data bits. If the ack failed, we still
1722 * need to clock through 16 cycles to keep the PHY(s) in sync.
1723 */
1724 if (ack) {
1725 for(i = 0; i < 16; i++) {
1726 XE_MII_CLR(XE_MII_CLK);
1727 DELAY(1);
1728 XE_MII_SET(XE_MII_CLK);
1729 DELAY(1);
1730 }
1731 goto fail;
1732 }
1733
1734 for (i = 0x8000; i; i >>= 1) {
1735 XE_MII_CLR(XE_MII_CLK);
1736 DELAY(1);
1737 if (!ack) {
1738 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1739 frame->mii_data |= i;
1740 DELAY(1);
1741 }
1742 XE_MII_SET(XE_MII_CLK);
1743 DELAY(1);
1744 }
1745
1746 fail:
1747
1748 XE_MII_CLR(XE_MII_CLK);
1749 DELAY(1);
1750 XE_MII_SET(XE_MII_CLK);
1751 DELAY(1);
1752
1753 crit_exit();
1754
1755 if (ack)
1756 return(1);
1757 return(0);
1758 }
1759
1760
1761 /*
1762 * Write to a PHY register through the MII.
1763 */
1764 static int
1765 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1766
1767 crit_enter();
1768
1769 /*
1770 * Set up frame for TX.
1771 */
1772 frame->mii_stdelim = XE_MII_STARTDELIM;
1773 frame->mii_opcode = XE_MII_WRITEOP;
1774 frame->mii_turnaround = XE_MII_TURNAROUND;
1775
1776 XE_SELECT_PAGE(2);
1777
1778 /*
1779 * Turn on data output.
1780 */
1781 XE_MII_SET(XE_MII_DIR);
1782
1783 xe_mii_sync(scp);
1784
1785 xe_mii_send(scp, frame->mii_stdelim, 2);
1786 xe_mii_send(scp, frame->mii_opcode, 2);
1787 xe_mii_send(scp, frame->mii_phyaddr, 5);
1788 xe_mii_send(scp, frame->mii_regaddr, 5);
1789 xe_mii_send(scp, frame->mii_turnaround, 2);
1790 xe_mii_send(scp, frame->mii_data, 16);
1791
1792 /* Idle bit. */
1793 XE_MII_SET(XE_MII_CLK);
1794 DELAY(1);
1795 XE_MII_CLR(XE_MII_CLK);
1796 DELAY(1);
1797
1798 /*
1799 * Turn off xmit.
1800 */
1801 XE_MII_CLR(XE_MII_DIR);
1802
1803 crit_exit();
1804
1805 return(0);
1806 }
1807
1808
1809 /*
1810 * Read a register from the PHY.
1811 */
1812 static u_int16_t
1813 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
1814 struct xe_mii_frame frame;
1815
1816 bzero((char *)&frame, sizeof(frame));
1817
1818 frame.mii_phyaddr = 0;
1819 frame.mii_regaddr = reg;
1820 xe_mii_readreg(scp, &frame);
1821
1822 return(frame.mii_data);
1823 }
1824
1825
1826 /*
1827 * Write to a PHY register.
1828 */
1829 static void
1830 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
1831 struct xe_mii_frame frame;
1832
1833 bzero((char *)&frame, sizeof(frame));
1834
1835 frame.mii_phyaddr = 0;
1836 frame.mii_regaddr = reg;
1837 frame.mii_data = data;
1838 xe_mii_writereg(scp, &frame);
1839
1840 return;
1841 }
1842
1843
1844 /*
1845 * A bit of debugging code.
1846 */
1847 static void
1848 xe_mii_dump(struct xe_softc *scp) {
1849 int i;
1850
1851 crit_enter();
1852
1853 if_printf(scp->ifp, "MII registers: ");
1854 for (i = 0; i < 2; i++) {
1855 kprintf(" %d:%04x", i, xe_phy_readreg(scp, i));
1856 }
1857 for (i = 4; i < 7; i++) {
1858 kprintf(" %d:%04x", i, xe_phy_readreg(scp, i));
1859 }
1860 kprintf("\n");
1861
1862 crit_exit();
1863 }
1864
1865 static void
1866 xe_reg_dump(struct xe_softc *scp) {
1867 int page, i;
1868
1869 crit_enter();
1870
1871 if_printf(scp->ifp, "Common registers: ");
1872 for (i = 0; i < 8; i++) {
1873 kprintf(" %2.2x", XE_INB(i));
1874 }
1875 kprintf("\n");
1876
1877 for (page = 0; page <= 8; page++) {
1878 if_printf(scp->ifp, "Register page %2.2x: ", page);
1879 XE_SELECT_PAGE(page);
1880 for (i = 8; i < 16; i++) {
1881 kprintf(" %2.2x", XE_INB(i));
1882 }
1883 kprintf("\n");
1884 }
1885
1886 for (page = 0x10; page < 0x5f; page++) {
1887 if ((page >= 0x11 && page <= 0x3f) ||
1888 (page == 0x41) ||
1889 (page >= 0x43 && page <= 0x4f) ||
1890 (page >= 0x59))
1891 continue;
1892 if_printf(scp->ifp, "Register page %2.2x: ", page);
1893 XE_SELECT_PAGE(page);
1894 for (i = 8; i < 16; i++) {
1895 kprintf(" %2.2x", XE_INB(i));
1896 }
1897 kprintf("\n");
1898 }
1899
1900 crit_exit();
1901 }
1902
1903 int
1904 xe_activate(device_t dev)
1905 {
1906 struct xe_softc *sc = device_get_softc(dev);
1907 int start, i;
1908
1909 DEVPRINTF(2, (dev, "activate\n"));
1910
1911 if (!sc->modem) {
1912 sc->port_rid = 0; /* 0 is managed by pccard */
1913 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1914 &sc->port_rid, 0, ~0, 16, RF_ACTIVE);
1915 } else if (sc->dingo) {
1916 /*
1917 * Find a 16 byte aligned ioport for the card.
1918 */
1919 DEVPRINTF(1, (dev, "Finding an aligned port for RealPort\n"));
1920 sc->port_rid = 1; /* 0 is managed by pccard */
1921 start = 0x100;
1922 do {
1923 sc->port_res = bus_alloc_resource(dev,
1924 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
1925 RF_ACTIVE);
1926 if (sc->port_res == 0)
1927 break; /* we failed */
1928 if ((rman_get_start(sc->port_res) & 0xf) == 0)
1929 break; /* good */
1930 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1931 sc->port_res);
1932 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
1933 } while (1);
1934 DEVPRINTF(1, (dev, "RealPort port 0x%0lx, size 0x%0lx\n",
1935 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1936 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
1937 }
1938 else if (sc->ce2) {
1939 /*
1940 * Find contiguous I/O port for the Ethernet function on CEM2 and
1941 * CEM3 cards. We allocate window 0 wherever pccard has decided
1942 * it should be, then find an available window adjacent to it for
1943 * the second function. Not sure that both windows are actually
1944 * needed.
1945 */
1946 DEVPRINTF(1, (dev, "Finding I/O port for CEM2/CEM3\n"));
1947 sc->ce2_port_rid = 0; /* 0 is managed by pccard */
1948 sc->ce2_port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1949 &sc->ce2_port_rid, 0, ~0,
1950 8, RF_ACTIVE);
1951 if (!sc->ce2_port_res) {
1952 device_printf(dev, "Cannot allocate I/O port for modem\n");
1953 return ENOMEM;
1954 }
1955
1956 sc->port_rid = 1;
1957 start = bus_get_resource_start(dev, SYS_RES_IOPORT,
1958 sc->ce2_port_rid);
1959 for (i = 0; i < 2; i++) {
1960 start += (i == 0 ? 8 : -24);
1961 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1962 &sc->port_rid, start,
1963 start + 18, 18, RF_ACTIVE);
1964 if (sc->port_res == 0)
1965 continue; /* Failed, try again if possible */
1966 if (bus_get_resource_start(dev, SYS_RES_IOPORT,
1967 sc->port_rid) == start)
1968 break; /* Success! */
1969
1970 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1971 sc->port_res);
1972 sc->port_res = 0;
1973 }
1974 DEVPRINTF(1, (dev, "CEM2/CEM3 port 0x%0lx, size 0x%0lx\n",
1975 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1976 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
1977 }
1978 if (!sc->port_res) {
1979 device_printf(dev, "Cannot allocate ioport\n");
1980 return ENOMEM;
1981 }
1982
1983 sc->irq_rid = 0;
1984 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
1985 RF_ACTIVE);
1986 if (!sc->irq_res) {
1987 device_printf(dev, "Cannot allocate irq\n");
1988 xe_deactivate(dev);
1989 return ENOMEM;
1990 }
1991
1992 sc->bst = rman_get_bustag(sc->port_res);
1993 sc->bsh = rman_get_bushandle(sc->port_res);
1994 return (0);
1995 }
1996
1997 void
1998 xe_deactivate(device_t dev)
1999 {
2000 struct xe_softc *sc = device_get_softc(dev);
2001
2002 DEVPRINTF(2, (dev, "deactivate\n"));
2003 xe_disable_intr(sc);
2004
2005 if (sc->port_res)
2006 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2007 sc->port_res);
2008 sc->port_res = 0;
2009 if (sc->ce2_port_res)
2010 bus_release_resource(dev, SYS_RES_IOPORT, sc->ce2_port_rid,
2011 sc->ce2_port_res);
2012 sc->ce2_port_res = 0;
2013 if (sc->irq_res)
2014 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
2015 sc->irq_res);
2016 sc->irq_res = 0;
2017 }
Cache object: 201489f3d84eac2545baac4c96e86671
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