FreeBSD/Linux Kernel Cross Reference
sys/dev/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 /*
27 * Portions of this software were derived from Werner Koch's xirc2ps driver
28 * for Linux under the terms of the following license (from v1.30 of the
29 * xirc2ps driver):
30 *
31 * Copyright (c) 1997 by Werner Koch (dd9jn)
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, and the entire permission notice in its entirety,
38 * including the disclaimer of warranties.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. The name of the author may not be used to endorse or promote
43 * products derived from this software without specific prior
44 * written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
47 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
49 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
50 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
51 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
52 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
54 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
56 * OF THE POSSIBILITY OF SUCH DAMAGE.
57 */
58
59 #include <sys/cdefs.h>
60 __FBSDID("$FreeBSD: releng/5.2/sys/dev/xe/if_xe.c 122625 2003-11-13 20:55:53Z obrien $");
61
62 /*
63 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The
64 * following cards are currently known to work with the driver:
65 * Xircom CreditCard 10/100 (CE3)
66 * Xircom CreditCard Ethernet + Modem 28 (CEM28)
67 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56)
68 * Xircom RealPort Ethernet 10
69 * Xircom RealPort Ethernet 10/100
70 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G)
71 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A)
72 * Compaq Netelligent 10/100 PC Card (CPQ-10/100)
73 *
74 * Some other cards *should* work, but support for them is either broken or in
75 * an unknown state at the moment. I'm always interested in hearing from
76 * people who own any of these cards:
77 * Xircom CreditCard 10Base-T (PS-CE2-10)
78 * Xircom CreditCard Ethernet + ModemII (CEM2)
79 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?)
80 *
81 * Thanks to all who assisted with the development and testing of the driver,
82 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru
83 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left
84 * out anyone who deserves a mention here.
85 *
86 * Special thanks to Ade Lovett for both hosting the mailing list and doing
87 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting
88 * the web pages.
89 *
90 * Author email: <scott@uk.freebsd.org>
91 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/
92 */
93
94
95 #include <sys/param.h>
96 #include <sys/cdefs.h>
97 #include <sys/errno.h>
98 #include <sys/kernel.h>
99 #include <sys/mbuf.h>
100 #include <sys/socket.h>
101 #include <sys/sockio.h>
102 #include <sys/systm.h>
103 #include <sys/uio.h>
104 #include <sys/sysctl.h>
105
106 #include <sys/module.h>
107 #include <sys/bus.h>
108
109 #include <machine/bus.h>
110 #include <machine/resource.h>
111 #include <sys/rman.h>
112
113 #include <net/ethernet.h>
114 #include <net/if.h>
115 #include <net/if_arp.h>
116 #include <net/if_dl.h>
117 #include <net/if_media.h>
118 #include <net/if_mib.h>
119 #include <net/bpf.h>
120
121 #include <dev/xe/if_xereg.h>
122 #include <dev/xe/if_xevar.h>
123
124 /*
125 * MII command structure
126 */
127 struct xe_mii_frame {
128 u_int8_t mii_stdelim;
129 u_int8_t mii_opcode;
130 u_int8_t mii_phyaddr;
131 u_int8_t mii_regaddr;
132 u_int8_t mii_turnaround;
133 u_int16_t mii_data;
134 };
135
136 /*
137 * Media autonegotiation progress constants
138 */
139 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
140 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
141 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
142 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
143 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
144
145 /*
146 * Multicast hashing CRC constants
147 */
148 #define XE_CRC_POLY 0x04c11db6
149
150 /*
151 * Prototypes start here
152 */
153 static void xe_init (void *xscp);
154 static void xe_start (struct ifnet *ifp);
155 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data);
156 static void xe_watchdog (struct ifnet *ifp);
157 static int xe_media_change (struct ifnet *ifp);
158 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp);
159 static timeout_t xe_setmedia;
160 static void xe_reset (struct xe_softc *scp);
161 static void xe_stop (struct xe_softc *scp);
162 static void xe_enable_intr (struct xe_softc *scp);
163 static void xe_disable_intr (struct xe_softc *scp);
164 static void xe_set_multicast (struct xe_softc *scp);
165 static void xe_set_addr (struct xe_softc *scp, u_int8_t* addr, unsigned idx);
166 static void xe_mchash (struct xe_softc *scp, caddr_t addr);
167 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
168
169 /*
170 * MII functions
171 */
172 static void xe_mii_sync (struct xe_softc *scp);
173 static int xe_mii_init (struct xe_softc *scp);
174 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt);
175 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame);
176 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame);
177 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg);
178 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data);
179
180 /*
181 * Debugging functions
182 */
183 static void xe_mii_dump (struct xe_softc *scp);
184 #if 0
185 static void xe_reg_dump (struct xe_softc *scp);
186 #endif
187
188 /*
189 * Debug logging levels - set with hw.xe.debug sysctl
190 * 0 = None
191 * 1 = More hardware details, probe/attach progress
192 * 2 = Most function calls, ioctls and media selection progress
193 * 3 = Everything - interrupts, packets in/out and multicast address setup
194 */
195 #define XE_DEBUG
196 #ifdef XE_DEBUG
197
198 /* sysctl vars */
199 SYSCTL_NODE(_hw, OID_AUTO, xe, CTLFLAG_RD, 0, "if_xe parameters");
200
201 int xe_debug = 0;
202 SYSCTL_INT(_hw_xe, OID_AUTO, debug, CTLFLAG_RW,
203 &xe_debug, 0, "if_xe debug level");
204
205 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg
206 #define DPRINTF(level, arg) if (xe_debug >= (level)) printf arg
207 #define XE_MII_DUMP(scp) if (xe_debug >= 3) xe_mii_dump(scp)
208 #if 0
209 #define XE_REG_DUMP(scp) if (xe_debug >= 3) xe_reg_dump(scp)
210 #endif
211 #else
212 #define DEVPRINTF(level, arg)
213 #define DPRINTF(level, arg)
214 #define XE_MII_DUMP(scp)
215 #if 0
216 #define XE_REG_DUMP(scp)
217 #endif
218 #endif
219
220
221 /*
222 * Attach a device.
223 */
224 int
225 xe_attach (device_t dev)
226 {
227 struct xe_softc *scp = device_get_softc(dev);
228
229 DEVPRINTF(2, (dev, "attach\n"));
230
231 /* Initialise stuff... */
232 scp->dev = dev;
233 scp->ifp = &scp->arpcom.ac_if;
234 scp->ifm = &scp->ifmedia;
235 scp->autoneg_status = XE_AUTONEG_NONE;
236
237 /* Initialise the ifnet structure */
238 scp->ifp->if_softc = scp;
239 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev));
240 scp->ifp->if_timer = 0;
241 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
242 scp->ifp->if_linkmib = &scp->mibdata;
243 scp->ifp->if_linkmiblen = sizeof scp->mibdata;
244 scp->ifp->if_output = ether_output;
245 scp->ifp->if_start = xe_start;
246 scp->ifp->if_ioctl = xe_ioctl;
247 scp->ifp->if_watchdog = xe_watchdog;
248 scp->ifp->if_init = xe_init;
249 scp->ifp->if_baudrate = 100000000;
250 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
251
252 /* Initialise the ifmedia structure */
253 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
254 callout_handle_init(&scp->chand);
255
256 /* Add supported media types */
257 if (scp->mohawk) {
258 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
259 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
260 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
261 }
262 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
263 if (scp->ce2)
264 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
265 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
266
267 /* Default is to autoselect best supported media type */
268 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
269
270 /* Get the hardware into a known state */
271 xe_reset(scp);
272
273 /* Get hardware version numbers */
274 XE_SELECT_PAGE(4);
275 scp->version = XE_INB(XE_BOV);
276 if (scp->mohawk)
277 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
278 else
279 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
280
281 /* Print some useful information */
282 device_printf(dev, "%s %s, version 0x%02x/0x%02x%s%s\n",
283 scp->vendor,
284 scp->card_type,
285 scp->version,
286 scp->srev,
287 scp->mohawk ? ", 100Mbps capable" : "",
288 scp->modem ? ", with modem" : "");
289 if (scp->mohawk) {
290 XE_SELECT_PAGE(0x10);
291 DEVPRINTF(1, (dev, "DingoID=0x%04x, RevisionID=0x%04x, VendorID=0x%04x\n",
292 XE_INW(XE_DINGOID),
293 XE_INW(XE_RevID),
294 XE_INW(XE_VendorID)));
295 }
296 if (scp->ce2) {
297 XE_SELECT_PAGE(0x45);
298 DEVPRINTF(1, (dev, "CE2 version = 0x%#02x\n", XE_INB(XE_REV)));
299 }
300 device_printf(dev, "Ethernet address %6D\n", scp->arpcom.ac_enaddr, ":");
301
302 /* Attach the interface */
303 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr);
304
305 /* Done */
306 return 0;
307 }
308
309
310 /*
311 * Complete hardware intitialisation and enable output. Exits without doing
312 * anything if there's no address assigned to the card, or if media selection
313 * is in progress (the latter implies we've already run this function).
314 */
315 static void
316 xe_init(void *xscp) {
317 struct xe_softc *scp = xscp;
318 unsigned i;
319 int s;
320
321 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return;
322
323 if (scp->autoneg_status != XE_AUTONEG_NONE) return;
324
325 DEVPRINTF(2, (scp->dev, "init\n"));
326
327 s = splimp();
328
329 /* Reset transmitter flags */
330 scp->tx_queued = 0;
331 scp->tx_tpr = 0;
332 scp->tx_timeouts = 0;
333 scp->tx_thres = 64;
334 scp->tx_min = ETHER_MIN_LEN - ETHER_CRC_LEN;
335 scp->ifp->if_timer = 0;
336
337 /* Soft reset the card */
338 XE_SELECT_PAGE(0);
339 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
340 DELAY(40000);
341 XE_OUTB(XE_CR, 0);
342 DELAY(40000);
343
344 if (scp->mohawk) {
345 /*
346 * set GP1 and GP2 as outputs (bits 2 & 3)
347 * set GP1 low to power on the ML6692 (bit 0)
348 * set GP2 high to power on the 10Mhz chip (bit 1)
349 */
350 XE_SELECT_PAGE(4);
351 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT|XE_GPR0_GP1_SELECT|XE_GPR0_GP2_OUT);
352 }
353
354 /* Shut off interrupts */
355 xe_disable_intr(scp);
356
357 /* Wait for everything to wake up */
358 DELAY(500000);
359
360 /* Check for PHY */
361 if (scp->mohawk)
362 scp->phy_ok = xe_mii_init(scp);
363
364 /* Disable 'source insertion' (not sure what that means) */
365 XE_SELECT_PAGE(0x42);
366 XE_OUTB(XE_SWC0, XE_SWC0_NO_SRC_INSERT);
367
368 /* Set 8K/24K Tx/Rx buffer split */
369 if (scp->srev != 1) {
370 XE_SELECT_PAGE(2);
371 XE_OUTW(XE_RBS, 0x2000);
372 }
373
374 /* Enable early transmit mode on Mohawk/Dingo */
375 if (scp->mohawk) {
376 XE_SELECT_PAGE(0x03);
377 XE_OUTW(XE_TPT, scp->tx_thres);
378 XE_SELECT_PAGE(0x01);
379 XE_OUTB(XE_ECR, XE_INB(XE_ECR) | XE_ECR_EARLY_TX);
380 }
381
382 /* Put MAC address in first 'individual address' register */
383 XE_SELECT_PAGE(0x50);
384 for (i = 0; i < 6; i++)
385 XE_OUTB(0x08 + i, scp->arpcom.ac_enaddr[scp->mohawk ? 5 - i : i]);
386
387 /* Set up multicast addresses */
388 xe_set_multicast(scp);
389
390 /* Fix the receive data offset -- reset can leave it off-by-one */
391 XE_SELECT_PAGE(0);
392 XE_OUTW(XE_DO, 0x2000);
393
394 /* Set interrupt masks */
395 XE_SELECT_PAGE(1);
396 XE_OUTB(XE_IMR0, XE_IMR0_TX_PACKET | XE_IMR0_MAC_INTR | XE_IMR0_RX_PACKET);
397
398 /* Set MAC interrupt masks */
399 XE_SELECT_PAGE(0x40);
400 XE_OUTB(XE_RX0Msk,
401 ~(XE_RX0M_RX_OVERRUN | XE_RX0M_CRC_ERROR
402 | XE_RX0M_ALIGN_ERROR | XE_RX0M_LONG_PACKET));
403 XE_OUTB(XE_TX0Msk,
404 ~(XE_TX0M_SQE_FAIL | XE_TX0M_LATE_COLLISION | XE_TX0M_TX_UNDERRUN
405 | XE_TX0M_16_COLLISIONS | XE_TX0M_NO_CARRIER));
406
407 /* Clear MAC status registers */
408 XE_SELECT_PAGE(0x40);
409 XE_OUTB(XE_RST0, 0x00);
410 XE_OUTB(XE_TXST0, 0x00);
411
412 /* Enable receiver and put MAC online */
413 XE_SELECT_PAGE(0x40);
414 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
415
416 /* Set up IMR, enable interrupts */
417 xe_enable_intr(scp);
418
419 /* Start media selection */
420 xe_setmedia(scp);
421
422 /* Enable output */
423 scp->ifp->if_flags |= IFF_RUNNING;
424 scp->ifp->if_flags &= ~IFF_OACTIVE;
425
426 (void)splx(s);
427 }
428
429
430 /*
431 * Start output on interface. Should be called at splimp() priority. Check
432 * that the output is idle (ie, IFF_OACTIVE is not set) before calling this
433 * function. If media selection is in progress we set IFF_OACTIVE ourselves
434 * and return immediately.
435 */
436 static void
437 xe_start(struct ifnet *ifp) {
438 struct xe_softc *scp = ifp->if_softc;
439 struct mbuf *mbp;
440
441 if (scp->autoneg_status != XE_AUTONEG_NONE) {
442 ifp->if_flags |= IFF_OACTIVE;
443 return;
444 }
445
446 DEVPRINTF(3, (scp->dev, "start\n"));
447
448 /*
449 * Loop while there are packets to be sent, and space to send them.
450 */
451 while (1) {
452 /* Suck a packet off the send queue */
453 IF_DEQUEUE(&ifp->if_snd, mbp);
454
455 if (mbp == NULL) {
456 /*
457 * We are using the !OACTIVE flag to indicate to the outside world that
458 * we can accept an additional packet rather than that the transmitter
459 * is _actually_ active. Indeed, the transmitter may be active, but if
460 * we haven't filled all the buffers with data then we still want to
461 * accept more.
462 */
463 ifp->if_flags &= ~IFF_OACTIVE;
464 return;
465 }
466
467 if (xe_pio_write_packet(scp, mbp) != 0) {
468 /* Push the packet back onto the queue */
469 IF_PREPEND(&ifp->if_snd, mbp);
470 ifp->if_flags |= IFF_OACTIVE;
471 return;
472 }
473
474 /* Tap off here if there is a bpf listener */
475 BPF_MTAP(ifp, mbp);
476
477 /* In case we don't hear from the card again... */
478 ifp->if_timer = 5;
479 scp->tx_queued++;
480
481 m_freem(mbp);
482 }
483 }
484
485
486 /*
487 * Process an ioctl request. Adapted from the ed driver.
488 */
489 static int
490 xe_ioctl (register struct ifnet *ifp, u_long command, caddr_t data) {
491 struct xe_softc *scp;
492 int s, error;
493
494 scp = ifp->if_softc;
495 error = 0;
496
497 s = splimp();
498
499 switch (command) {
500
501 case SIOCSIFFLAGS:
502 DEVPRINTF(2, (scp->dev, "ioctl: SIOCSIFFLAGS: 0x%04x\n", ifp->if_flags));
503 /*
504 * If the interface is marked up and stopped, then start it. If it is
505 * marked down and running, then stop it.
506 */
507 if (ifp->if_flags & IFF_UP) {
508 if (!(ifp->if_flags & IFF_RUNNING)) {
509 xe_reset(scp);
510 xe_init(scp);
511 }
512 }
513 else {
514 if (ifp->if_flags & IFF_RUNNING)
515 xe_stop(scp);
516 }
517 /* FALL THROUGH (handle changes to PROMISC/ALLMULTI flags) */
518
519 case SIOCADDMULTI:
520 case SIOCDELMULTI:
521 DEVPRINTF(2, (scp->dev, "ioctl: SIOC{ADD,DEL}MULTI\n"));
522 /*
523 * Multicast list has (maybe) changed; set the hardware filters
524 * accordingly.
525 */
526 xe_set_multicast(scp);
527 error = 0;
528 break;
529
530 case SIOCSIFMEDIA:
531 case SIOCGIFMEDIA:
532 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ifmedia_ioctl\n"));
533 /*
534 * Someone wants to get/set media options.
535 */
536 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
537 break;
538
539 default:
540 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ether_ioctl\n"));
541 error = ether_ioctl(ifp, command, data);
542 }
543
544 (void)splx(s);
545
546 return error;
547 }
548
549
550 /*
551 * Card interrupt handler.
552 *
553 * This function is probably more complicated than it needs to be, as it
554 * attempts to deal with the case where multiple packets get sent between
555 * interrupts. This is especially annoying when working out the collision
556 * stats. Not sure whether this case ever really happens or not (maybe on a
557 * slow/heavily loaded machine?) so it's probably best to leave this like it
558 * is.
559 *
560 * Note that the crappy PIO used to get packets on and off the card means that
561 * you will spend a lot of time in this routine -- I can get my P150 to spend
562 * 90% of its time servicing interrupts if I really hammer the network. Could
563 * fix this, but then you'd start dropping/losing packets. The moral of this
564 * story? If you want good network performance _and_ some cycles left over to
565 * get your work done, don't buy a Xircom card. Or convince them to tell me
566 * how to do memory-mapped I/O :)
567 */
568 static void
569 xe_intr(void *xscp)
570 {
571 struct xe_softc *scp = (struct xe_softc *) xscp;
572 struct ifnet *ifp;
573 u_int8_t psr, isr, esr, rsr, rst0, txst0, txst1, coll;
574
575 ifp = &scp->arpcom.ac_if;
576
577 /* Disable interrupts */
578 if (scp->mohawk)
579 XE_OUTB(XE_CR, 0);
580
581 /* Cache current register page */
582 psr = XE_INB(XE_PR);
583
584 /* Read ISR to see what caused this interrupt */
585 while ((isr = XE_INB(XE_ISR)) != 0) {
586
587 /* 0xff might mean the card is no longer around */
588 if (isr == 0xff) {
589 DEVPRINTF(3, (scp->dev, "intr: interrupt received for missing card?\n"));
590 break;
591 }
592
593 /* Read other status registers */
594 XE_SELECT_PAGE(0x40);
595 rst0 = XE_INB(XE_RST0);
596 XE_OUTB(XE_RST0, 0);
597 txst0 = XE_INB(XE_TXST0);
598 txst1 = XE_INB(XE_TXST1);
599 coll = txst1 & XE_TXST1_RETRY_COUNT;
600 XE_OUTB(XE_TXST0, 0);
601 XE_OUTB(XE_TXST1, 0);
602 XE_SELECT_PAGE(0);
603
604 DEVPRINTF(3, (scp->dev, "intr: ISR=0x%02x, RST=0x%02x, TXT=0x%02x%02x, COLL=0x%01x\n", isr, rst0, txst1, txst0, coll));
605
606 if (isr & XE_ISR_TX_PACKET) {
607 u_int8_t tpr, sent;
608
609 /* Update packet count, accounting for rollover */
610 tpr = XE_INB(XE_TPR);
611 sent = -scp->tx_tpr + tpr;
612
613 /* Update statistics if we actually sent anything */
614 if (sent > 0) {
615 scp->tx_tpr = tpr;
616 scp->tx_queued -= sent;
617 ifp->if_opackets += sent;
618 ifp->if_collisions += coll;
619
620 /*
621 * According to the Xircom manual, Dingo will sometimes manage to
622 * transmit a packet with triggering an interrupt. If this happens,
623 * we have sent > 1 and the collision count only reflects collisions
624 * on the last packet sent (the one that triggered the interrupt).
625 * Collision stats might therefore be a bit low, but there doesn't
626 * seem to be anything we can do about that.
627 */
628
629 switch (coll) {
630 case 0:
631 break;
632 case 1:
633 scp->mibdata.dot3StatsSingleCollisionFrames++;
634 scp->mibdata.dot3StatsCollFrequencies[0]++;
635 break;
636 default:
637 scp->mibdata.dot3StatsMultipleCollisionFrames++;
638 scp->mibdata.dot3StatsCollFrequencies[coll-1]++;
639 }
640 }
641 ifp->if_timer = 0;
642 ifp->if_flags &= ~IFF_OACTIVE;
643 }
644
645 /* Handle most MAC interrupts */
646 if (isr & XE_ISR_MAC_INTR) {
647
648 #if 0
649 /* Carrier sense lost -- only in 10Mbit HDX mode */
650 if (txst0 & XE_TXST0_NO_CARRIER || !(txst1 & XE_TXST1_LINK_STATUS)) {
651 /* XXX - Need to update media status here */
652 device_printf(scp->dev, "no carrier\n");
653 ifp->if_oerrors++;
654 scp->mibdata.dot3StatsCarrierSenseErrors++;
655 }
656 #endif
657 /* Excessive collisions -- try sending again */
658 if (txst0 & XE_TXST0_16_COLLISIONS) {
659 ifp->if_collisions += 16;
660 ifp->if_oerrors++;
661 scp->mibdata.dot3StatsExcessiveCollisions++;
662 scp->mibdata.dot3StatsMultipleCollisionFrames++;
663 scp->mibdata.dot3StatsCollFrequencies[15]++;
664 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
665 }
666 /* Transmit underrun -- increase early transmit threshold */
667 if (txst0 & XE_TXST0_TX_UNDERRUN && scp->mohawk) {
668 DEVPRINTF(1, (scp->dev, "transmit underrun"));
669 if (scp->tx_thres < ETHER_MAX_LEN) {
670 if ((scp->tx_thres += 64) > ETHER_MAX_LEN)
671 scp->tx_thres = ETHER_MAX_LEN;
672 DPRINTF(1, (": increasing transmit threshold to %u", scp->tx_thres));
673 XE_SELECT_PAGE(0x3);
674 XE_OUTW(XE_TPT, scp->tx_thres);
675 XE_SELECT_PAGE(0x0);
676 }
677 DPRINTF(1, ("\n"));
678 ifp->if_oerrors++;
679 scp->mibdata.dot3StatsInternalMacTransmitErrors++;
680 }
681 /* Late collision -- just complain about it */
682 if (txst0 & XE_TXST0_LATE_COLLISION) {
683 device_printf(scp->dev, "late collision\n");
684 ifp->if_oerrors++;
685 scp->mibdata.dot3StatsLateCollisions++;
686 }
687 /* SQE test failure -- just complain about it */
688 if (txst0 & XE_TXST0_SQE_FAIL) {
689 device_printf(scp->dev, "SQE test failure\n");
690 ifp->if_oerrors++;
691 scp->mibdata.dot3StatsSQETestErrors++;
692 }
693 /* Packet too long -- what happens to these */
694 if (rst0 & XE_RST0_LONG_PACKET) {
695 device_printf(scp->dev, "received giant packet\n");
696 ifp->if_ierrors++;
697 scp->mibdata.dot3StatsFrameTooLongs++;
698 }
699 /* CRC error -- packet dropped */
700 if (rst0 & XE_RST0_CRC_ERROR) {
701 device_printf(scp->dev, "CRC error\n");
702 ifp->if_ierrors++;
703 scp->mibdata.dot3StatsFCSErrors++;
704 }
705 }
706
707 /* Handle received packet(s) */
708 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
709 rsr = XE_INB(XE_RSR);
710
711 DEVPRINTF(3, (scp->dev, "intr: ESR=0x%02x, RSR=0x%02x\n", esr, rsr));
712
713 /* Make sure packet is a good one */
714 if (rsr & XE_RSR_RX_OK) {
715 struct ether_header *ehp;
716 struct mbuf *mbp;
717 u_int16_t len;
718
719 len = XE_INW(XE_RBC) - ETHER_CRC_LEN;
720
721 DEVPRINTF(3, (scp->dev, "intr: receive length = %d\n", len));
722
723 if (len == 0) {
724 ifp->if_iqdrops++;
725 continue;
726 }
727
728 /*
729 * Allocate mbuf to hold received packet. If the mbuf header isn't
730 * big enough, we attach an mbuf cluster to hold the packet. Note the
731 * +=2 to align the packet data on a 32-bit boundary, and the +3 to
732 * allow for the possibility of reading one more byte than the actual
733 * packet length (we always read 16-bit words).
734 * XXX - Surely there's a better way to do this alignment?
735 */
736 MGETHDR(mbp, M_DONTWAIT, MT_DATA);
737 if (mbp == NULL) {
738 ifp->if_iqdrops++;
739 continue;
740 }
741
742 if (len + 3 > MHLEN) {
743 MCLGET(mbp, M_DONTWAIT);
744 if ((mbp->m_flags & M_EXT) == 0) {
745 m_freem(mbp);
746 ifp->if_iqdrops++;
747 continue;
748 }
749 }
750
751 mbp->m_data += 2;
752 ehp = mtod(mbp, struct ether_header *);
753
754 /*
755 * Now get the packet in PIO mode, including the Ethernet header but
756 * omitting the trailing CRC.
757 */
758
759 /*
760 * Work around a bug in CE2 cards. There seems to be a problem with
761 * duplicated and extraneous bytes in the receive buffer, but without
762 * any real documentation for the CE2 it's hard to tell for sure.
763 * XXX - Needs testing on CE2 hardware
764 */
765 if (scp->srev == 0) {
766 u_short rhs;
767
768 XE_SELECT_PAGE(5);
769 rhs = XE_INW(XE_RHSA);
770 XE_SELECT_PAGE(0);
771
772 rhs += 3; /* Skip control info */
773
774 if (rhs >= 0x8000)
775 rhs = 0;
776
777 if (rhs + len > 0x8000) {
778 int i;
779
780 for (i = 0; i < len; i++, rhs++) {
781 ((char *)ehp)[i] = XE_INB(XE_EDP);
782 if (rhs == 0x8000) {
783 rhs = 0;
784 i--;
785 }
786 }
787 }
788 else
789 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
790 (u_int16_t *) ehp, (len + 1) >> 1);
791 }
792 else
793 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
794 (u_int16_t *) ehp, (len + 1) >> 1);
795
796 /* Deliver packet to upper layers */
797 mbp->m_pkthdr.rcvif = ifp;
798 mbp->m_pkthdr.len = mbp->m_len = len;
799 (*ifp->if_input)(ifp, mbp);
800 ifp->if_ipackets++;
801 }
802
803 /* Packet alignment error -- drop packet */
804 else if (rsr & XE_RSR_ALIGN_ERROR) {
805 device_printf(scp->dev, "alignment error\n");
806 scp->mibdata.dot3StatsAlignmentErrors++;
807 ifp->if_ierrors++;
808 }
809
810 /* Skip to next packet, if there is one */
811 XE_OUTW(XE_DO, 0x8000);
812 }
813
814 /* Clear receiver overruns now we have some free buffer space */
815 if (rst0 & XE_RST0_RX_OVERRUN) {
816 DEVPRINTF(1, (scp->dev, "receive overrun\n"));
817 ifp->if_ierrors++;
818 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
819 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
820 }
821 }
822
823 /* Restore saved page */
824 XE_SELECT_PAGE(psr);
825
826 /* Re-enable interrupts */
827 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR);
828
829 return;
830 }
831
832
833 /*
834 * Device timeout/watchdog routine. Called automatically if we queue a packet
835 * for transmission but don't get an interrupt within a specified timeout
836 * (usually 5 seconds). When this happens we assume the worst and reset the
837 * card.
838 */
839 static void
840 xe_watchdog(struct ifnet *ifp) {
841 struct xe_softc *scp = ifp->if_softc;
842
843 device_printf(scp->dev, "watchdog timeout: resetting card\n");
844 scp->tx_timeouts++;
845 ifp->if_oerrors += scp->tx_queued;
846 xe_stop(scp);
847 xe_reset(scp);
848 xe_init(scp);
849 }
850
851
852 /*
853 * Change media selection.
854 */
855 static int
856 xe_media_change(struct ifnet *ifp) {
857 struct xe_softc *scp = ifp->if_softc;
858
859 DEVPRINTF(2, (scp->dev, "media_change\n"));
860
861 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
862 return(EINVAL);
863
864 /*
865 * Some card/media combos aren't always possible -- filter those out here.
866 */
867 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
868 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
869 return (EINVAL);
870
871 xe_setmedia(scp);
872
873 return 0;
874 }
875
876
877 /*
878 * Return current media selection.
879 */
880 static void
881 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
882 struct xe_softc *scp = ifp->if_softc;
883
884 DEVPRINTF(3, (scp->dev, "media_status\n"));
885
886 /* XXX - This is clearly wrong. Will fix once I have CE2 working */
887 mrp->ifm_status = IFM_AVALID | IFM_ACTIVE;
888 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
889
890 return;
891 }
892
893
894 /*
895 * Select active media.
896 */
897 static void xe_setmedia(void *xscp) {
898 struct xe_softc *scp = xscp;
899 u_int16_t bmcr, bmsr, anar, lpar;
900
901 DEVPRINTF(2, (scp->dev, "setmedia\n"));
902
903 /* Cancel any pending timeout */
904 untimeout(xe_setmedia, scp, scp->chand);
905 xe_disable_intr(scp);
906
907 /* Select media */
908 scp->media = IFM_ETHER;
909 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
910
911 case IFM_AUTO: /* Autoselect media */
912 scp->media = IFM_ETHER|IFM_AUTO;
913
914 /*
915 * Autoselection is really awful. It goes something like this:
916 *
917 * Wait until the transmitter goes idle (2sec timeout).
918 * Reset card
919 * IF a 100Mbit PHY exists
920 * Start NWAY autonegotiation (3.5sec timeout)
921 * IF that succeeds
922 * Select 100baseTX or 10baseT, whichever was detected
923 * ELSE
924 * Reset card
925 * IF a 100Mbit PHY exists
926 * Try to force a 100baseTX link (3sec timeout)
927 * IF that succeeds
928 * Select 100baseTX
929 * ELSE
930 * Disable the PHY
931 * ENDIF
932 * ENDIF
933 * ENDIF
934 * ENDIF
935 * IF nothing selected so far
936 * IF a 100Mbit PHY exists
937 * Select 10baseT
938 * ELSE
939 * Select 10baseT or 10base2, whichever is connected
940 * ENDIF
941 * ENDIF
942 */
943 switch (scp->autoneg_status) {
944
945 case XE_AUTONEG_NONE:
946 DEVPRINTF(2, (scp->dev, "Waiting for idle transmitter\n"));
947 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE;
948 scp->autoneg_status = XE_AUTONEG_WAITING;
949 /* FALL THROUGH */
950
951 case XE_AUTONEG_WAITING:
952 if (scp->tx_queued != 0) {
953 scp->chand = timeout(xe_setmedia, scp, hz/2);
954 return;
955 }
956 if (scp->phy_ok) {
957 DEVPRINTF(2, (scp->dev, "Starting autonegotiation\n"));
958 bmcr = xe_phy_readreg(scp, PHY_BMCR);
959 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
960 xe_phy_writereg(scp, PHY_BMCR, bmcr);
961 anar = xe_phy_readreg(scp, PHY_ANAR);
962 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL);
963 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF;
964 xe_phy_writereg(scp, PHY_ANAR, anar);
965 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
966 xe_phy_writereg(scp, PHY_BMCR, bmcr);
967 scp->autoneg_status = XE_AUTONEG_STARTED;
968 scp->chand = timeout(xe_setmedia, scp, hz * 7/2);
969 return;
970 }
971 else {
972 scp->autoneg_status = XE_AUTONEG_FAIL;
973 }
974 break;
975
976 case XE_AUTONEG_STARTED:
977 bmsr = xe_phy_readreg(scp, PHY_BMSR);
978 lpar = xe_phy_readreg(scp, PHY_LPAR);
979 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) {
980 DEVPRINTF(2, (scp->dev, "Autonegotiation complete!\n"));
981 /*
982 * XXX - Shouldn't have to do this, but (on my hub at least) the
983 * XXX - transmitter won't work after a successful autoneg. So we see
984 * XXX - what the negotiation result was and force that mode. I'm
985 * XXX - sure there is an easy fix for this.
986 */
987 if (lpar & PHY_LPAR_100BTXHALF) {
988 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
989 XE_MII_DUMP(scp);
990 XE_SELECT_PAGE(2);
991 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
992 scp->media = IFM_ETHER|IFM_100_TX;
993 scp->autoneg_status = XE_AUTONEG_NONE;
994 }
995 else {
996 /*
997 * XXX - Bit of a hack going on in here.
998 * XXX - This is derived from Ken Hughes patch to the Linux driver
999 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
1000 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
1001 * XXX - these are the things we need to find out.
1002 */
1003 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1004 XE_SELECT_PAGE(2);
1005 /* BEGIN HACK */
1006 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1007 XE_SELECT_PAGE(0x42);
1008 XE_OUTB(XE_SWC1, 0x80);
1009 scp->media = IFM_ETHER|IFM_10_T;
1010 scp->autoneg_status = XE_AUTONEG_NONE;
1011 /* END HACK */
1012 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
1013 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
1014 }
1015 }
1016 else {
1017 DEVPRINTF(2, (scp->dev, "Autonegotiation failed; trying 100baseTX\n"));
1018 XE_MII_DUMP(scp);
1019 if (scp->phy_ok) {
1020 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1021 scp->autoneg_status = XE_AUTONEG_100TX;
1022 scp->chand = timeout(xe_setmedia, scp, hz * 3);
1023 return;
1024 }
1025 else {
1026 scp->autoneg_status = XE_AUTONEG_FAIL;
1027 }
1028 }
1029 break;
1030
1031 case XE_AUTONEG_100TX:
1032 (void)xe_phy_readreg(scp, PHY_BMSR);
1033 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1034 if (bmsr & PHY_BMSR_LINKSTAT) {
1035 DEVPRINTF(2, (scp->dev, "Got 100baseTX link!\n"));
1036 XE_MII_DUMP(scp);
1037 XE_SELECT_PAGE(2);
1038 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1039 scp->media = IFM_ETHER|IFM_100_TX;
1040 scp->autoneg_status = XE_AUTONEG_NONE;
1041 }
1042 else {
1043 DEVPRINTF(2, (scp->dev, "Autonegotiation failed; disabling PHY\n"));
1044 XE_MII_DUMP(scp);
1045 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1046 XE_SELECT_PAGE(2);
1047 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1048 scp->autoneg_status = XE_AUTONEG_FAIL;
1049 }
1050 break;
1051 }
1052
1053 /*
1054 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1055 * either autonegotiation failed, or never got started to begin with. In
1056 * either case, select a suitable 10Mbit media and hope it works. We
1057 * don't need to reset the card again, since it will have been done
1058 * already by the big switch above.
1059 */
1060 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1061 DEVPRINTF(2, (scp->dev, "Selecting 10baseX\n"));
1062 if (scp->mohawk) {
1063 XE_SELECT_PAGE(0x42);
1064 XE_OUTB(XE_SWC1, 0x80);
1065 scp->media = IFM_ETHER|IFM_10_T;
1066 scp->autoneg_status = XE_AUTONEG_NONE;
1067 }
1068 else {
1069 XE_SELECT_PAGE(4);
1070 XE_OUTB(XE_GPR0, 4);
1071 DELAY(50000);
1072 XE_SELECT_PAGE(0x42);
1073 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0);
1074 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1075 scp->autoneg_status = XE_AUTONEG_NONE;
1076 }
1077 }
1078 break;
1079
1080
1081 /*
1082 * If a specific media has been requested, we just reset the card and
1083 * select it (one small exception -- if 100baseTX is requested by there is
1084 * no PHY, we fall back to 10baseT operation).
1085 */
1086 case IFM_100_TX: /* Force 100baseTX */
1087 if (scp->phy_ok) {
1088 DEVPRINTF(2, (scp->dev, "Selecting 100baseTX\n"));
1089 XE_SELECT_PAGE(0x42);
1090 XE_OUTB(XE_SWC1, 0);
1091 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1092 XE_SELECT_PAGE(2);
1093 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1094 scp->media |= IFM_100_TX;
1095 break;
1096 }
1097 /* FALLTHROUGH */
1098
1099 case IFM_10_T: /* Force 10baseT */
1100 DEVPRINTF(2, (scp->dev, "Selecting 10baseT\n"));
1101 if (scp->phy_ok) {
1102 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1103 XE_SELECT_PAGE(2);
1104 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1105 }
1106 XE_SELECT_PAGE(0x42);
1107 XE_OUTB(XE_SWC1, 0x80);
1108 scp->media |= IFM_10_T;
1109 break;
1110
1111 case IFM_10_2:
1112 DEVPRINTF(2, (scp->dev, "Selecting 10base2\n"));
1113 XE_SELECT_PAGE(0x42);
1114 XE_OUTB(XE_SWC1, 0xc0);
1115 scp->media |= IFM_10_2;
1116 break;
1117 }
1118
1119
1120 /*
1121 * Finally, the LEDs are set to match whatever media was chosen and the
1122 * transmitter is unblocked.
1123 */
1124 DEVPRINTF(2, (scp->dev, "Setting LEDs\n"));
1125 XE_SELECT_PAGE(2);
1126 switch (IFM_SUBTYPE(scp->media)) {
1127 case IFM_100_TX:
1128 case IFM_10_T:
1129 XE_OUTB(XE_LED, 0x3b);
1130 if (scp->dingo)
1131 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1132 break;
1133
1134 case IFM_10_2:
1135 XE_OUTB(XE_LED, 0x3a);
1136 break;
1137 }
1138
1139 /* Restart output? */
1140 xe_enable_intr(scp);
1141 scp->ifp->if_flags &= ~IFF_OACTIVE;
1142 xe_start(scp->ifp);
1143 }
1144
1145
1146 /*
1147 * Hard reset (power cycle) the card.
1148 */
1149 static void
1150 xe_reset(struct xe_softc *scp) {
1151 int s;
1152
1153 DEVPRINTF(2, (scp->dev, "reset\n"));
1154
1155 s = splimp();
1156
1157 /* Power down */
1158 XE_SELECT_PAGE(4);
1159 XE_OUTB(XE_GPR1, 0);
1160 DELAY(40000);
1161
1162 /* Power up again */
1163 if (scp->mohawk)
1164 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN);
1165 else
1166 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN|XE_GPR1_AIC);
1167
1168 DELAY(40000);
1169 XE_SELECT_PAGE(0);
1170
1171 (void)splx(s);
1172 }
1173
1174
1175 /*
1176 * Take interface offline. This is done by powering down the device, which I
1177 * assume means just shutting down the transceiver and Ethernet logic. This
1178 * requires a _hard_ reset to recover from, as we need to power up again.
1179 */
1180 static void
1181 xe_stop(struct xe_softc *scp) {
1182 int s;
1183
1184 DEVPRINTF(2, (scp->dev, "stop\n"));
1185
1186 s = splimp();
1187
1188 /*
1189 * Shut off interrupts.
1190 */
1191 xe_disable_intr(scp);
1192
1193 /*
1194 * Power down.
1195 */
1196 XE_SELECT_PAGE(4);
1197 XE_OUTB(XE_GPR1, 0);
1198 XE_SELECT_PAGE(0);
1199 if (scp->mohawk) {
1200 /*
1201 * set GP1 and GP2 as outputs (bits 2 & 3)
1202 * set GP1 high to power on the ML6692 (bit 0)
1203 * set GP2 low to power on the 10Mhz chip (bit 1)
1204 */
1205 XE_SELECT_PAGE(4);
1206 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT|XE_GPR0_GP1_SELECT|XE_GPR0_GP1_OUT);
1207 }
1208
1209 /*
1210 * ~IFF_RUNNING == interface down.
1211 */
1212 scp->ifp->if_flags &= ~IFF_RUNNING;
1213 scp->ifp->if_flags &= ~IFF_OACTIVE;
1214 scp->ifp->if_timer = 0;
1215
1216 (void)splx(s);
1217 }
1218
1219
1220 /*
1221 * Enable interrupts from the card.
1222 */
1223 static void
1224 xe_enable_intr(struct xe_softc *scp) {
1225
1226 DEVPRINTF(2, (scp->dev, "enable_intr\n"));
1227
1228 XE_SELECT_PAGE(0);
1229 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1230 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1231 if (!(XE_INB(0x10) & 0x01)) {
1232 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1233 }
1234 }
1235 }
1236
1237
1238 /*
1239 * Disable interrupts from the card.
1240 */
1241 static void
1242 xe_disable_intr(struct xe_softc *scp) {
1243
1244 DEVPRINTF(2, (scp->dev, "disable_intr\n"));
1245
1246 XE_SELECT_PAGE(0);
1247 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1248 if (scp->modem && !scp->dingo) { /* More magic */
1249 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1250 }
1251 }
1252
1253
1254 /*
1255 * Set up multicast filter and promiscuous modes.
1256 */
1257 static void
1258 xe_set_multicast(struct xe_softc *scp) {
1259 struct ifnet *ifp;
1260 struct ifmultiaddr *maddr;
1261 unsigned count, i;
1262
1263 DEVPRINTF(2, (scp->dev, "set_multicast\n"));
1264
1265 ifp = &scp->arpcom.ac_if;
1266 XE_SELECT_PAGE(0x42);
1267
1268 /* Handle PROMISC flag */
1269 if (ifp->if_flags & IFF_PROMISC) {
1270 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_PROMISCUOUS);
1271 return;
1272 }
1273 else
1274 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_PROMISCUOUS);
1275
1276 /* Handle ALLMULTI flag */
1277 if (ifp->if_flags & IFF_ALLMULTI) {
1278 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_ALLMULTI);
1279 return;
1280 }
1281 else
1282 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI);
1283
1284 /* Iterate over multicast address list */
1285 count = 0;
1286 #if __FreeBSD_version < 500000
1287 LIST_FOREACH(maddr, &ifp->if_multiaddrs, ifma_link) {
1288 #else
1289 TAILQ_FOREACH(maddr, &ifp->if_multiaddrs, ifma_link) {
1290 #endif
1291 if (maddr->ifma_addr->sa_family != AF_LINK)
1292 continue;
1293
1294 count++;
1295
1296 if (count < 10)
1297 /* First 9 use Individual Addresses for exact matching */
1298 xe_set_addr(scp, LLADDR((struct sockaddr_dl *)maddr->ifma_addr), count);
1299 else
1300 if (scp->mohawk)
1301 /* Use hash filter on Mohawk and Dingo */
1302 xe_mchash(scp, LLADDR((struct sockaddr_dl *)maddr->ifma_addr));
1303 else
1304 /* Nowhere else to put them on CE2 */
1305 break;
1306 }
1307
1308 DEVPRINTF(2, (scp->dev, "set_multicast: count = %u\n", count));
1309
1310 /* Now do some cleanup and enable multicast handling as needed */
1311 if (count == 0) {
1312 /* Disable all multicast handling */
1313 XE_SELECT_PAGE(0x42);
1314 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~(XE_SWC1_IA_ENABLE|XE_SWC1_ALLMULTI));
1315 if (scp->mohawk) {
1316 XE_SELECT_PAGE(0x02);
1317 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1318 }
1319 }
1320 else if (count < 10) {
1321 /* Full in any unused Individual Addresses with our MAC address */
1322 for (i = count + 1; i < 10; i++)
1323 xe_set_addr(scp, (u_int8_t *)(&scp->arpcom.ac_enaddr), i);
1324 /* Enable Individual Address matching only */
1325 XE_SELECT_PAGE(0x42);
1326 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | XE_SWC1_IA_ENABLE);
1327 if (scp->mohawk) {
1328 XE_SELECT_PAGE(0x02);
1329 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1330 }
1331 }
1332 else {
1333 if (scp->mohawk) {
1334 /* Check whether hash table is full */
1335 XE_SELECT_PAGE(0x58);
1336 for (i = 0x08; i < 0x10; i++)
1337 if (XE_INB(i) != 0xff)
1338 break;
1339 if (i == 0x10) {
1340 /* Hash table full - enable promiscuous multicast matching */
1341 XE_SELECT_PAGE(0x42);
1342 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI);
1343 XE_SELECT_PAGE(0x02);
1344 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1345 }
1346 else {
1347 /* Enable hash table and Individual Address matching */
1348 XE_SELECT_PAGE(0x42);
1349 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | XE_SWC1_IA_ENABLE);
1350 XE_SELECT_PAGE(0x02);
1351 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | XE_MSR_HASH_TABLE);
1352 }
1353 }
1354 else {
1355 /* Enable promiscuous multicast matching */
1356 XE_SELECT_PAGE(0x42);
1357 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI);
1358 }
1359 }
1360
1361 XE_SELECT_PAGE(0);
1362 }
1363
1364
1365 /*
1366 * Copy the Ethernet multicast address in addr to the on-chip registers for
1367 * Individual Address idx. Assumes that addr is really a multicast address
1368 * and that idx > 0 (slot 0 is always used for the card MAC address).
1369 */
1370 static void
1371 xe_set_addr(struct xe_softc *scp, u_int8_t* addr, unsigned idx) {
1372 u_int8_t page, reg;
1373 unsigned i;
1374
1375 /*
1376 * Individual Addresses are stored in registers 8-F of pages 0x50-0x57. IA1
1377 * therefore starts at register 0xE on page 0x50. The expressions below
1378 * compute the starting page and register for any IA index > 0.
1379 */
1380 --idx;
1381 page = 0x50 + idx%4 + idx/4*3;
1382 reg = 0x0e - 2 * (idx%4);
1383
1384 DEVPRINTF(3, (scp->dev, "set_addr: idx = %u, page = 0x%02x, reg = 0x%02x\n",
1385 idx+1, page, reg));
1386
1387 /*
1388 * Copy the IA bytes. Note that the byte order is reversed for Mohawk and
1389 * Dingo wrt. CE2 hardware.
1390 */
1391 XE_SELECT_PAGE(page);
1392 for (i = 0; i < 6; i++) {
1393 if (i > 0) {
1394 DPRINTF(3, (":%02x", addr[i]));
1395 }
1396 else {
1397 DEVPRINTF(3, (scp->dev, "set_addr: %02x", addr[0]));
1398 }
1399 XE_OUTB(reg, addr[scp->mohawk ? 5 - i : i]);
1400 if (++reg == 0x10) {
1401 reg = 0x08;
1402 XE_SELECT_PAGE(++page);
1403 }
1404 }
1405 DPRINTF(3, ("\n"));
1406 }
1407
1408
1409 /*
1410 * Set the appropriate bit in the multicast hash table for the supplied
1411 * Ethernet multicast address addr. Assumes that addr is really a multicast
1412 * address.
1413 */
1414 static void
1415 xe_mchash(struct xe_softc* scp, caddr_t addr) {
1416 u_int32_t crc = 0xffffffff;
1417 int idx, bit;
1418 u_int8_t carry, byte, data, crc31, hash;
1419
1420 /* Compute CRC of the address -- standard Ethernet CRC function */
1421 for (data = *addr++, idx = 0; idx < 6; idx++, data >>= 1) {
1422 for (bit = 1; bit <= 8; bit++) {
1423 if (crc & 0x80000000)
1424 crc31 = 0x01;
1425 else
1426 crc31 = 0;
1427 carry = crc31 ^ (data & 0x01);
1428 crc <<= 1;
1429 data >>= 1;
1430 crc = (crc ^ XE_CRC_POLY) | (carry|0x1);
1431 }
1432 }
1433
1434 DEVPRINTF(3, (scp->dev, "set_hash: CRC = 0x%08x\n", crc));
1435
1436 /*
1437 * Convert a CRC into an index into the multicast hash table. What we do is
1438 * take the most-significant 6 bits of the CRC, reverse them, and use that as
1439 * the bit number in the hash table. Bits 5:3 of the result give the byte
1440 * within the table (0-7); bits 2:0 give the bit number within that byte (also
1441 * 0-7), ie. the number of shifts needed to get it into the lsb position.
1442 */
1443 for (idx = 0, hash = 0; idx < 6; idx++) {
1444 hash >>= 1;
1445 if (crc & 0x80000000) {
1446 hash |= 0x20;
1447 }
1448 crc <<= 1;
1449 }
1450
1451 /* Top 3 bits of hash give register - 8, bottom 3 give bit within register */
1452 byte = hash >> 3 | 0x08;
1453 carry = 0x01 << (hash & 0x07);
1454
1455 DEVPRINTF(3, (scp->dev, "set_hash: hash = 0x%02x, byte = 0x%02x, carry = 0x%02x\n", hash, byte, carry));
1456
1457 XE_SELECT_PAGE(0x58);
1458 XE_OUTB(byte, XE_INB(byte) | carry);
1459 }
1460
1461
1462 /*
1463 * Write an outgoing packet to the card using programmed I/O.
1464 */
1465 static int
1466 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1467 unsigned len, pad;
1468 unsigned char wantbyte;
1469 u_int8_t *data;
1470 u_int8_t savebyte[2];
1471
1472 /* Get total packet length */
1473 if (mbp->m_flags & M_PKTHDR)
1474 len = mbp->m_pkthdr.len;
1475 else {
1476 struct mbuf* mbp2 = mbp;
1477 for (len = 0; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1478 }
1479
1480 DEVPRINTF(3, (scp->dev, "pio_write_packet: len = %u\n", len));
1481
1482 /* Packets < minimum length may need to be padded out */
1483 pad = 0;
1484 if (len < scp->tx_min) {
1485 pad = scp->tx_min - len;
1486 len = scp->tx_min;
1487 }
1488
1489 /* Check transmit buffer space */
1490 XE_SELECT_PAGE(0);
1491 XE_OUTW(XE_TRS, len+2); /* Only effective on rev. 1 CE2 cards */
1492 if ((XE_INW(XE_TSO) & 0x7fff) <= len + 2)
1493 return 1;
1494
1495 /* Send packet length to card */
1496 XE_OUTW(XE_EDP, len);
1497
1498 /*
1499 * Write packet to card using PIO (code stolen from the ed driver)
1500 */
1501 wantbyte = 0;
1502 while (mbp != NULL) {
1503 len = mbp->m_len;
1504 if (len > 0) {
1505 data = mtod(mbp, caddr_t);
1506 if (wantbyte) { /* Finish the last word */
1507 savebyte[1] = *data;
1508 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1509 data++;
1510 len--;
1511 wantbyte = 0;
1512 }
1513 if (len > 1) { /* Output contiguous words */
1514 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1515 len >> 1);
1516 data += len & ~1;
1517 len &= 1;
1518 }
1519 if (len == 1) { /* Save last byte, if necessary */
1520 savebyte[0] = *data;
1521 wantbyte = 1;
1522 }
1523 }
1524 mbp = mbp->m_next;
1525 }
1526
1527 /*
1528 * Send last byte of odd-length packets
1529 */
1530 if (wantbyte)
1531 XE_OUTB(XE_EDP, savebyte[0]);
1532
1533 /*
1534 * Can just tell CE3 cards to send; short packets will be padded out with
1535 * random cruft automatically. For CE2, manually pad the packet with
1536 * garbage; it will be sent when the required number or bytes have been
1537 * delivered to the card.
1538 */
1539 if (scp->mohawk)
1540 XE_OUTB(XE_CR, XE_CR_TX_PACKET | XE_CR_RESTART_TX | XE_CR_ENABLE_INTR);
1541 else if (pad > 0) {
1542 if (pad & 0x01)
1543 XE_OUTB(XE_EDP, 0xaa);
1544 pad >>= 1;
1545 while (pad > 0) {
1546 XE_OUTW(XE_EDP, 0xdead);
1547 pad--;
1548 }
1549 }
1550
1551 return 0;
1552 }
1553
1554
1555
1556 /**************************************************************
1557 * *
1558 * M I I F U N C T I O N S *
1559 * *
1560 **************************************************************/
1561
1562 /*
1563 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1564 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1565 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1566 * XXX - some kind of common MII-handling code, shared by all drivers. But
1567 * XXX - that's a whole other mission.
1568 */
1569 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1570 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1571
1572
1573 /*
1574 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1575 */
1576 static void
1577 xe_mii_sync(struct xe_softc *scp) {
1578 register int i;
1579
1580 XE_SELECT_PAGE(2);
1581 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1582
1583 for (i = 0; i < 32; i++) {
1584 XE_MII_SET(XE_MII_CLK);
1585 DELAY(1);
1586 XE_MII_CLR(XE_MII_CLK);
1587 DELAY(1);
1588 }
1589 }
1590
1591
1592 /*
1593 * Look for a MII-compliant PHY. If we find one, reset it.
1594 */
1595 static int
1596 xe_mii_init(struct xe_softc *scp) {
1597 u_int16_t status;
1598
1599 status = xe_phy_readreg(scp, PHY_BMSR);
1600 if ((status & 0xff00) != 0x7800) {
1601 DEVPRINTF(2, (scp->dev, "no PHY found, %0x\n", status));
1602 return 0;
1603 }
1604 else {
1605 DEVPRINTF(2, (scp->dev, "PHY OK!\n"));
1606
1607 /* Reset the PHY */
1608 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1609 DELAY(500);
1610 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1611 XE_MII_DUMP(scp);
1612 return 1;
1613 }
1614 }
1615
1616
1617 /*
1618 * Clock a series of bits through the MII.
1619 */
1620 static void
1621 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1622 int i;
1623
1624 XE_SELECT_PAGE(2);
1625 XE_MII_CLR(XE_MII_CLK);
1626
1627 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1628 if (bits & i) {
1629 XE_MII_SET(XE_MII_WRD);
1630 } else {
1631 XE_MII_CLR(XE_MII_WRD);
1632 }
1633 DELAY(1);
1634 XE_MII_CLR(XE_MII_CLK);
1635 DELAY(1);
1636 XE_MII_SET(XE_MII_CLK);
1637 }
1638 }
1639
1640
1641 /*
1642 * Read an PHY register through the MII.
1643 */
1644 static int
1645 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1646 int i, ack, s;
1647
1648 s = splimp();
1649
1650 /*
1651 * Set up frame for RX.
1652 */
1653 frame->mii_stdelim = XE_MII_STARTDELIM;
1654 frame->mii_opcode = XE_MII_READOP;
1655 frame->mii_turnaround = 0;
1656 frame->mii_data = 0;
1657
1658 XE_SELECT_PAGE(2);
1659 XE_OUTB(XE_GPR2, 0);
1660
1661 /*
1662 * Turn on data xmit.
1663 */
1664 XE_MII_SET(XE_MII_DIR);
1665
1666 xe_mii_sync(scp);
1667
1668 /*
1669 * Send command/address info.
1670 */
1671 xe_mii_send(scp, frame->mii_stdelim, 2);
1672 xe_mii_send(scp, frame->mii_opcode, 2);
1673 xe_mii_send(scp, frame->mii_phyaddr, 5);
1674 xe_mii_send(scp, frame->mii_regaddr, 5);
1675
1676 /* Idle bit */
1677 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1678 DELAY(1);
1679 XE_MII_SET(XE_MII_CLK);
1680 DELAY(1);
1681
1682 /* Turn off xmit. */
1683 XE_MII_CLR(XE_MII_DIR);
1684
1685 /* Check for ack */
1686 XE_MII_CLR(XE_MII_CLK);
1687 DELAY(1);
1688 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1689 XE_MII_SET(XE_MII_CLK);
1690 DELAY(1);
1691
1692 /*
1693 * Now try reading data bits. If the ack failed, we still
1694 * need to clock through 16 cycles to keep the PHY(s) in sync.
1695 */
1696 if (ack) {
1697 for(i = 0; i < 16; i++) {
1698 XE_MII_CLR(XE_MII_CLK);
1699 DELAY(1);
1700 XE_MII_SET(XE_MII_CLK);
1701 DELAY(1);
1702 }
1703 goto fail;
1704 }
1705
1706 for (i = 0x8000; i; i >>= 1) {
1707 XE_MII_CLR(XE_MII_CLK);
1708 DELAY(1);
1709 if (!ack) {
1710 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1711 frame->mii_data |= i;
1712 DELAY(1);
1713 }
1714 XE_MII_SET(XE_MII_CLK);
1715 DELAY(1);
1716 }
1717
1718 fail:
1719
1720 XE_MII_CLR(XE_MII_CLK);
1721 DELAY(1);
1722 XE_MII_SET(XE_MII_CLK);
1723 DELAY(1);
1724
1725 splx(s);
1726
1727 if (ack)
1728 return(1);
1729 return(0);
1730 }
1731
1732
1733 /*
1734 * Write to a PHY register through the MII.
1735 */
1736 static int
1737 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1738 int s;
1739
1740 s = splimp();
1741
1742 /*
1743 * Set up frame for TX.
1744 */
1745 frame->mii_stdelim = XE_MII_STARTDELIM;
1746 frame->mii_opcode = XE_MII_WRITEOP;
1747 frame->mii_turnaround = XE_MII_TURNAROUND;
1748
1749 XE_SELECT_PAGE(2);
1750
1751 /*
1752 * Turn on data output.
1753 */
1754 XE_MII_SET(XE_MII_DIR);
1755
1756 xe_mii_sync(scp);
1757
1758 xe_mii_send(scp, frame->mii_stdelim, 2);
1759 xe_mii_send(scp, frame->mii_opcode, 2);
1760 xe_mii_send(scp, frame->mii_phyaddr, 5);
1761 xe_mii_send(scp, frame->mii_regaddr, 5);
1762 xe_mii_send(scp, frame->mii_turnaround, 2);
1763 xe_mii_send(scp, frame->mii_data, 16);
1764
1765 /* Idle bit. */
1766 XE_MII_SET(XE_MII_CLK);
1767 DELAY(1);
1768 XE_MII_CLR(XE_MII_CLK);
1769 DELAY(1);
1770
1771 /*
1772 * Turn off xmit.
1773 */
1774 XE_MII_CLR(XE_MII_DIR);
1775
1776 splx(s);
1777
1778 return(0);
1779 }
1780
1781
1782 /*
1783 * Read a register from the PHY.
1784 */
1785 static u_int16_t
1786 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
1787 struct xe_mii_frame frame;
1788
1789 bzero((char *)&frame, sizeof(frame));
1790
1791 frame.mii_phyaddr = 0;
1792 frame.mii_regaddr = reg;
1793 xe_mii_readreg(scp, &frame);
1794
1795 return(frame.mii_data);
1796 }
1797
1798
1799 /*
1800 * Write to a PHY register.
1801 */
1802 static void
1803 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
1804 struct xe_mii_frame frame;
1805
1806 bzero((char *)&frame, sizeof(frame));
1807
1808 frame.mii_phyaddr = 0;
1809 frame.mii_regaddr = reg;
1810 frame.mii_data = data;
1811 xe_mii_writereg(scp, &frame);
1812
1813 return;
1814 }
1815
1816
1817 /*
1818 * A bit of debugging code.
1819 */
1820 static void
1821 xe_mii_dump(struct xe_softc *scp) {
1822 int i, s;
1823
1824 s = splimp();
1825
1826 device_printf(scp->dev, "MII registers: ");
1827 for (i = 0; i < 2; i++) {
1828 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1829 }
1830 for (i = 4; i < 7; i++) {
1831 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1832 }
1833 printf("\n");
1834
1835 (void)splx(s);
1836 }
1837
1838 #if 0
1839 void
1840 xe_reg_dump(struct xe_softc *scp) {
1841 int page, i, s;
1842
1843 s = splimp();
1844
1845 device_printf(scp->dev, "Common registers: ");
1846 for (i = 0; i < 8; i++) {
1847 printf(" %2.2x", XE_INB(i));
1848 }
1849 printf("\n");
1850
1851 for (page = 0; page <= 8; page++) {
1852 device_printf(scp->dev, "Register page %2.2x: ", page);
1853 XE_SELECT_PAGE(page);
1854 for (i = 8; i < 16; i++) {
1855 printf(" %2.2x", XE_INB(i));
1856 }
1857 printf("\n");
1858 }
1859
1860 for (page = 0x10; page < 0x5f; page++) {
1861 if ((page >= 0x11 && page <= 0x3f) ||
1862 (page == 0x41) ||
1863 (page >= 0x43 && page <= 0x4f) ||
1864 (page >= 0x59))
1865 continue;
1866 device_printf(scp->dev, "Register page %2.2x: ", page);
1867 XE_SELECT_PAGE(page);
1868 for (i = 8; i < 16; i++) {
1869 printf(" %2.2x", XE_INB(i));
1870 }
1871 printf("\n");
1872 }
1873
1874 (void)splx(s);
1875 }
1876 #endif
1877
1878 int
1879 xe_activate(device_t dev)
1880 {
1881 struct xe_softc *sc = device_get_softc(dev);
1882 int start, err, i;
1883
1884 DEVPRINTF(2, (dev, "activate\n"));
1885
1886 if (!sc->modem) {
1887 sc->port_rid = 0; /* 0 is managed by pccard */
1888 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1889 &sc->port_rid, 0, ~0, 16, RF_ACTIVE);
1890 }
1891 else if (sc->dingo) {
1892 /*
1893 * Find a 16 byte aligned ioport for the card.
1894 */
1895 DEVPRINTF(1, (dev, "Finding an aligned port for RealPort\n"));
1896 sc->port_rid = 1; /* 0 is managed by pccard */
1897 start = 0x100;
1898 do {
1899 sc->port_res = bus_alloc_resource(dev,
1900 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
1901 RF_ACTIVE);
1902 if (sc->port_res == 0)
1903 break; /* we failed */
1904 if ((rman_get_start(sc->port_res) & 0xf) == 0)
1905 break; /* good */
1906 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1907 sc->port_res);
1908 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
1909 } while (1);
1910 DEVPRINTF(1, (dev, "RealPort port 0x%0lx, size 0x%0lx\n",
1911 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1912 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
1913 }
1914 else if (sc->ce2) {
1915 /*
1916 * Find contiguous I/O port for the Ethernet function on CEM2 and
1917 * CEM3 cards. We allocate window 0 wherever pccard has decided
1918 * it should be, then find an available window adjacent to it for
1919 * the second function. Not sure that both windows are actually
1920 * needed.
1921 */
1922 DEVPRINTF(1, (dev, "Finding I/O port for CEM2/CEM3\n"));
1923 sc->ce2_port_rid = 0; /* 0 is managed by pccard */
1924 sc->ce2_port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1925 &sc->ce2_port_rid, 0, ~0,
1926 8, RF_ACTIVE);
1927 if (!sc->ce2_port_res) {
1928 DEVPRINTF(1, (dev, "Cannot allocate I/O port for modem\n"));
1929 return ENOMEM;
1930 }
1931
1932 sc->port_rid = 1;
1933 start = bus_get_resource_start(dev, SYS_RES_IOPORT,
1934 sc->ce2_port_rid);
1935 for (i = 0; i < 2; i++) {
1936 start += (i == 0 ? 8 : -24);
1937 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1938 &sc->port_rid, start,
1939 start + 18, 18, RF_ACTIVE);
1940 if (sc->port_res == 0)
1941 continue; /* Failed, try again if possible */
1942 if (bus_get_resource_start(dev, SYS_RES_IOPORT,
1943 sc->port_rid) == start)
1944 break; /* Success! */
1945
1946 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1947 sc->port_res);
1948 sc->port_res = 0;
1949 }
1950 DEVPRINTF(1, (dev, "CEM2/CEM3 port 0x%0lx, size 0x%0lx\n",
1951 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1952 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
1953 }
1954
1955 if (!sc->port_res) {
1956 DEVPRINTF(1, (dev, "Cannot allocate ioport\n"));
1957 return ENOMEM;
1958 }
1959
1960 sc->irq_rid = 0;
1961 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid,
1962 0, ~0, 1, RF_ACTIVE);
1963 if (!sc->irq_res) {
1964 DEVPRINTF(1, (dev, "Cannot allocate irq\n"));
1965 xe_deactivate(dev);
1966 return ENOMEM;
1967 }
1968 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc,
1969 &sc->intrhand)) != 0) {
1970 xe_deactivate(dev);
1971 return err;
1972 }
1973
1974 sc->bst = rman_get_bustag(sc->port_res);
1975 sc->bsh = rman_get_bushandle(sc->port_res);
1976 return (0);
1977 }
1978
1979 void
1980 xe_deactivate(device_t dev)
1981 {
1982 struct xe_softc *sc = device_get_softc(dev);
1983
1984 DEVPRINTF(2, (dev, "deactivate\n"));
1985 xe_disable_intr(sc);
1986
1987 if (sc->intrhand)
1988 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
1989 sc->intrhand = 0;
1990 if (sc->port_res)
1991 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1992 sc->port_res);
1993 sc->port_res = 0;
1994 if (sc->ce2_port_res)
1995 bus_release_resource(dev, SYS_RES_IOPORT, sc->ce2_port_rid,
1996 sc->ce2_port_res);
1997 sc->ce2_port_res = 0;
1998 if (sc->irq_res)
1999 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
2000 sc->irq_res);
2001 sc->irq_res = 0;
2002 return;
2003 }
Cache object: 525958b32d62fa7f8501c0f8187bbcd4
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