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m68k: use KBUILD_DEFCONFIG
[linux-2.6/verdex.git] / drivers / net / wan / lmc / lmc_media.c
blob8aa461c941ce903680372cdd25feb12f374c4e72
1 /* $Id: lmc_media.c,v 1.13 2000/04/11 05:25:26 asj Exp $ */
2
3 #include <linux/kernel.h>
4 #include <linux/string.h>
5 #include <linux/timer.h>
6 #include <linux/ptrace.h>
7 #include <linux/errno.h>
8 #include <linux/ioport.h>
9 #include <linux/slab.h>
10 #include <linux/interrupt.h>
11 #include <linux/in.h>
12 #include <linux/if_arp.h>
13 #include <linux/netdevice.h>
14 #include <linux/etherdevice.h>
15 #include <linux/skbuff.h>
16 #include <linux/inet.h>
17 #include <linux/bitops.h>
18
19 #include <net/syncppp.h>
20
21 #include <asm/processor.h> /* Processor type for cache alignment. */
22 #include <asm/io.h>
23 #include <asm/dma.h>
24
25 #include <asm/uaccess.h>
26
27 #include "lmc.h"
28 #include "lmc_var.h"
29 #include "lmc_ioctl.h"
30 #include "lmc_debug.h"
31
32 #define CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE 1
33
34 /*
35 * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
36 * All rights reserved. www.lanmedia.com
37 *
38 * This code is written by:
39 * Andrew Stanley-Jones (asj@cban.com)
40 * Rob Braun (bbraun@vix.com),
41 * Michael Graff (explorer@vix.com) and
42 * Matt Thomas (matt@3am-software.com).
43 *
44 * This software may be used and distributed according to the terms
45 * of the GNU General Public License version 2, incorporated herein by reference.
46 */
47
48 /*
49 * protocol independent method.
50 */
51 static void lmc_set_protocol (lmc_softc_t * const, lmc_ctl_t *);
52
53 /*
54 * media independent methods to check on media status, link, light LEDs,
55 * etc.
56 */
57 static void lmc_ds3_init (lmc_softc_t * const);
58 static void lmc_ds3_default (lmc_softc_t * const);
59 static void lmc_ds3_set_status (lmc_softc_t * const, lmc_ctl_t *);
60 static void lmc_ds3_set_100ft (lmc_softc_t * const, int);
61 static int lmc_ds3_get_link_status (lmc_softc_t * const);
62 static void lmc_ds3_set_crc_length (lmc_softc_t * const, int);
63 static void lmc_ds3_set_scram (lmc_softc_t * const, int);
64 static void lmc_ds3_watchdog (lmc_softc_t * const);
65
66 static void lmc_hssi_init (lmc_softc_t * const);
67 static void lmc_hssi_default (lmc_softc_t * const);
68 static void lmc_hssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
69 static void lmc_hssi_set_clock (lmc_softc_t * const, int);
70 static int lmc_hssi_get_link_status (lmc_softc_t * const);
71 static void lmc_hssi_set_link_status (lmc_softc_t * const, int);
72 static void lmc_hssi_set_crc_length (lmc_softc_t * const, int);
73 static void lmc_hssi_watchdog (lmc_softc_t * const);
74
75 static void lmc_ssi_init (lmc_softc_t * const);
76 static void lmc_ssi_default (lmc_softc_t * const);
77 static void lmc_ssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
78 static void lmc_ssi_set_clock (lmc_softc_t * const, int);
79 static void lmc_ssi_set_speed (lmc_softc_t * const, lmc_ctl_t *);
80 static int lmc_ssi_get_link_status (lmc_softc_t * const);
81 static void lmc_ssi_set_link_status (lmc_softc_t * const, int);
82 static void lmc_ssi_set_crc_length (lmc_softc_t * const, int);
83 static void lmc_ssi_watchdog (lmc_softc_t * const);
84
85 static void lmc_t1_init (lmc_softc_t * const);
86 static void lmc_t1_default (lmc_softc_t * const);
87 static void lmc_t1_set_status (lmc_softc_t * const, lmc_ctl_t *);
88 static int lmc_t1_get_link_status (lmc_softc_t * const);
89 static void lmc_t1_set_circuit_type (lmc_softc_t * const, int);
90 static void lmc_t1_set_crc_length (lmc_softc_t * const, int);
91 static void lmc_t1_set_clock (lmc_softc_t * const, int);
92 static void lmc_t1_watchdog (lmc_softc_t * const);
93
94 static void lmc_dummy_set_1 (lmc_softc_t * const, int);
95 static void lmc_dummy_set2_1 (lmc_softc_t * const, lmc_ctl_t *);
96
97 static inline void write_av9110_bit (lmc_softc_t *, int);
98 static void write_av9110 (lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t,
99 u_int32_t, u_int32_t);
100
101 lmc_media_t lmc_ds3_media = {
102 lmc_ds3_init, /* special media init stuff */
103 lmc_ds3_default, /* reset to default state */
104 lmc_ds3_set_status, /* reset status to state provided */
105 lmc_dummy_set_1, /* set clock source */
106 lmc_dummy_set2_1, /* set line speed */
107 lmc_ds3_set_100ft, /* set cable length */
108 lmc_ds3_set_scram, /* set scrambler */
109 lmc_ds3_get_link_status, /* get link status */
110 lmc_dummy_set_1, /* set link status */
111 lmc_ds3_set_crc_length, /* set CRC length */
112 lmc_dummy_set_1, /* set T1 or E1 circuit type */
113 lmc_ds3_watchdog
114 };
115
116 lmc_media_t lmc_hssi_media = {
117 lmc_hssi_init, /* special media init stuff */
118 lmc_hssi_default, /* reset to default state */
119 lmc_hssi_set_status, /* reset status to state provided */
120 lmc_hssi_set_clock, /* set clock source */
121 lmc_dummy_set2_1, /* set line speed */
122 lmc_dummy_set_1, /* set cable length */
123 lmc_dummy_set_1, /* set scrambler */
124 lmc_hssi_get_link_status, /* get link status */
125 lmc_hssi_set_link_status, /* set link status */
126 lmc_hssi_set_crc_length, /* set CRC length */
127 lmc_dummy_set_1, /* set T1 or E1 circuit type */
128 lmc_hssi_watchdog
129 };
130
131 lmc_media_t lmc_ssi_media = { lmc_ssi_init, /* special media init stuff */
132 lmc_ssi_default, /* reset to default state */
133 lmc_ssi_set_status, /* reset status to state provided */
134 lmc_ssi_set_clock, /* set clock source */
135 lmc_ssi_set_speed, /* set line speed */
136 lmc_dummy_set_1, /* set cable length */
137 lmc_dummy_set_1, /* set scrambler */
138 lmc_ssi_get_link_status, /* get link status */
139 lmc_ssi_set_link_status, /* set link status */
140 lmc_ssi_set_crc_length, /* set CRC length */
141 lmc_dummy_set_1, /* set T1 or E1 circuit type */
142 lmc_ssi_watchdog
143 };
144
145 lmc_media_t lmc_t1_media = {
146 lmc_t1_init, /* special media init stuff */
147 lmc_t1_default, /* reset to default state */
148 lmc_t1_set_status, /* reset status to state provided */
149 lmc_t1_set_clock, /* set clock source */
150 lmc_dummy_set2_1, /* set line speed */
151 lmc_dummy_set_1, /* set cable length */
152 lmc_dummy_set_1, /* set scrambler */
153 lmc_t1_get_link_status, /* get link status */
154 lmc_dummy_set_1, /* set link status */
155 lmc_t1_set_crc_length, /* set CRC length */
156 lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
157 lmc_t1_watchdog
158 };
159
160 static void
161 lmc_dummy_set_1 (lmc_softc_t * const sc, int a)
162 {
163 }
164
165 static void
166 lmc_dummy_set2_1 (lmc_softc_t * const sc, lmc_ctl_t * a)
167 {
168 }
169
170 /*
171 * HSSI methods
172 */
173
174 static void
175 lmc_hssi_init (lmc_softc_t * const sc)
176 {
177 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
178
179 lmc_gpio_mkoutput (sc, LMC_GEP_HSSI_CLOCK);
180 }
181
182 static void
183 lmc_hssi_default (lmc_softc_t * const sc)
184 {
185 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
186
187 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
188 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
189 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
190 }
191
192 /*
193 * Given a user provided state, set ourselves up to match it. This will
194 * always reset the card if needed.
195 */
196 static void
197 lmc_hssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
198 {
199 if (ctl == NULL)
200 {
201 sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
202 lmc_set_protocol (sc, NULL);
203
204 return;
205 }
206
207 /*
208 * check for change in clock source
209 */
210 if (ctl->clock_source && !sc->ictl.clock_source)
211 {
212 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
213 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
214 }
215 else if (!ctl->clock_source && sc->ictl.clock_source)
216 {
217 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
218 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
219 }
220
221 lmc_set_protocol (sc, ctl);
222 }
223
224 /*
225 * 1 == internal, 0 == external
226 */
227 static void
228 lmc_hssi_set_clock (lmc_softc_t * const sc, int ie)
229 {
230 int old;
231 old = sc->ictl.clock_source;
232 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
233 {
234 sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
235 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
236 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
237 if(old != ie)
238 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
239 }
240 else
241 {
242 sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
243 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
244 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
245 if(old != ie)
246 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
247 }
248 }
249
250 /*
251 * return hardware link status.
252 * 0 == link is down, 1 == link is up.
253 */
254 static int
255 lmc_hssi_get_link_status (lmc_softc_t * const sc)
256 {
257 /*
258 * We're using the same code as SSI since
259 * they're practically the same
260 */
261 return lmc_ssi_get_link_status(sc);
262 }
263
264 static void
265 lmc_hssi_set_link_status (lmc_softc_t * const sc, int state)
266 {
267 if (state == LMC_LINK_UP)
268 sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
269 else
270 sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
271
272 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
273 }
274
275 /*
276 * 0 == 16bit, 1 == 32bit
277 */
278 static void
279 lmc_hssi_set_crc_length (lmc_softc_t * const sc, int state)
280 {
281 if (state == LMC_CTL_CRC_LENGTH_32)
282 {
283 /* 32 bit */
284 sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
285 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
286 }
287 else
288 {
289 /* 16 bit */
290 sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
291 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
292 }
293
294 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
295 }
296
297 static void
298 lmc_hssi_watchdog (lmc_softc_t * const sc)
299 {
300 /* HSSI is blank */
301 }
302
303 /*
304 * DS3 methods
305 */
306
307 /*
308 * Set cable length
309 */
310 static void
311 lmc_ds3_set_100ft (lmc_softc_t * const sc, int ie)
312 {
313 if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT)
314 {
315 sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
316 sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
317 }
318 else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT)
319 {
320 sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
321 sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
322 }
323 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
324 }
325
326 static void
327 lmc_ds3_default (lmc_softc_t * const sc)
328 {
329 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
330
331 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
332 sc->lmc_media->set_cable_length (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
333 sc->lmc_media->set_scrambler (sc, LMC_CTL_OFF);
334 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
335 }
336
337 /*
338 * Given a user provided state, set ourselves up to match it. This will
339 * always reset the card if needed.
340 */
341 static void
342 lmc_ds3_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
343 {
344 if (ctl == NULL)
345 {
346 sc->lmc_media->set_cable_length (sc, sc->ictl.cable_length);
347 sc->lmc_media->set_scrambler (sc, sc->ictl.scrambler_onoff);
348 lmc_set_protocol (sc, NULL);
349
350 return;
351 }
352
353 /*
354 * check for change in cable length setting
355 */
356 if (ctl->cable_length && !sc->ictl.cable_length)
357 lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
358 else if (!ctl->cable_length && sc->ictl.cable_length)
359 lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
360
361 /*
362 * Check for change in scrambler setting (requires reset)
363 */
364 if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
365 lmc_ds3_set_scram (sc, LMC_CTL_ON);
366 else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
367 lmc_ds3_set_scram (sc, LMC_CTL_OFF);
368
369 lmc_set_protocol (sc, ctl);
370 }
371
372 static void
373 lmc_ds3_init (lmc_softc_t * const sc)
374 {
375 int i;
376
377 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
378
379 /* writes zeros everywhere */
380 for (i = 0; i < 21; i++)
381 {
382 lmc_mii_writereg (sc, 0, 17, i);
383 lmc_mii_writereg (sc, 0, 18, 0);
384 }
385
386 /* set some essential bits */
387 lmc_mii_writereg (sc, 0, 17, 1);
388 lmc_mii_writereg (sc, 0, 18, 0x25); /* ser, xtx */
389
390 lmc_mii_writereg (sc, 0, 17, 5);
391 lmc_mii_writereg (sc, 0, 18, 0x80); /* emode */
392
393 lmc_mii_writereg (sc, 0, 17, 14);
394 lmc_mii_writereg (sc, 0, 18, 0x30); /* rcgen, tcgen */
395
396 /* clear counters and latched bits */
397 for (i = 0; i < 21; i++)
398 {
399 lmc_mii_writereg (sc, 0, 17, i);
400 lmc_mii_readreg (sc, 0, 18);
401 }
402 }
403
404 /*
405 * 1 == DS3 payload scrambled, 0 == not scrambled
406 */
407 static void
408 lmc_ds3_set_scram (lmc_softc_t * const sc, int ie)
409 {
410 if (ie == LMC_CTL_ON)
411 {
412 sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
413 sc->ictl.scrambler_onoff = LMC_CTL_ON;
414 }
415 else
416 {
417 sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
418 sc->ictl.scrambler_onoff = LMC_CTL_OFF;
419 }
420 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
421 }
422
423 /*
424 * return hardware link status.
425 * 0 == link is down, 1 == link is up.
426 */
427 static int
428 lmc_ds3_get_link_status (lmc_softc_t * const sc)
429 {
430 u_int16_t link_status, link_status_11;
431 int ret = 1;
432
433 lmc_mii_writereg (sc, 0, 17, 7);
434 link_status = lmc_mii_readreg (sc, 0, 18);
435
436 /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
437 * led0 yellow = far-end adapter is in Red alarm condition
438 * led1 blue = received an Alarm Indication signal
439 * (upstream failure)
440 * led2 Green = power to adapter, Gate Array loaded & driver
441 * attached
442 * led3 red = Loss of Signal (LOS) or out of frame (OOF)
443 * conditions detected on T3 receive signal
444 */
445
446 lmc_led_on(sc, LMC_DS3_LED2);
447
448 if ((link_status & LMC_FRAMER_REG0_DLOS) ||
449 (link_status & LMC_FRAMER_REG0_OOFS)){
450 ret = 0;
451 if(sc->last_led_err[3] != 1){
452 u16 r1;
453 lmc_mii_writereg (sc, 0, 17, 01); /* Turn on Xbit error as our cisco does */
454 r1 = lmc_mii_readreg (sc, 0, 18);
455 r1 &= 0xfe;
456 lmc_mii_writereg(sc, 0, 18, r1);
457 printk(KERN_WARNING "%s: Red Alarm - Loss of Signal or Loss of Framing\n", sc->name);
458 }
459 lmc_led_on(sc, LMC_DS3_LED3); /* turn on red LED */
460 sc->last_led_err[3] = 1;
461 }
462 else {
463 lmc_led_off(sc, LMC_DS3_LED3); /* turn on red LED */
464 if(sc->last_led_err[3] == 1){
465 u16 r1;
466 lmc_mii_writereg (sc, 0, 17, 01); /* Turn off Xbit error */
467 r1 = lmc_mii_readreg (sc, 0, 18);
468 r1 |= 0x01;
469 lmc_mii_writereg(sc, 0, 18, r1);
470 }
471 sc->last_led_err[3] = 0;
472 }
473
474 lmc_mii_writereg(sc, 0, 17, 0x10);
475 link_status_11 = lmc_mii_readreg(sc, 0, 18);
476 if((link_status & LMC_FRAMER_REG0_AIS) ||
477 (link_status_11 & LMC_FRAMER_REG10_XBIT)) {
478 ret = 0;
479 if(sc->last_led_err[0] != 1){
480 printk(KERN_WARNING "%s: AIS Alarm or XBit Error\n", sc->name);
481 printk(KERN_WARNING "%s: Remote end has loss of signal or framing\n", sc->name);
482 }
483 lmc_led_on(sc, LMC_DS3_LED0);
484 sc->last_led_err[0] = 1;
485 }
486 else {
487 lmc_led_off(sc, LMC_DS3_LED0);
488 sc->last_led_err[0] = 0;
489 }
490
491 lmc_mii_writereg (sc, 0, 17, 9);
492 link_status = lmc_mii_readreg (sc, 0, 18);
493
494 if(link_status & LMC_FRAMER_REG9_RBLUE){
495 ret = 0;
496 if(sc->last_led_err[1] != 1){
497 printk(KERN_WARNING "%s: Blue Alarm - Receiving all 1's\n", sc->name);
498 }
499 lmc_led_on(sc, LMC_DS3_LED1);
500 sc->last_led_err[1] = 1;
501 }
502 else {
503 lmc_led_off(sc, LMC_DS3_LED1);
504 sc->last_led_err[1] = 0;
505 }
506
507 return ret;
508 }
509
510 /*
511 * 0 == 16bit, 1 == 32bit
512 */
513 static void
514 lmc_ds3_set_crc_length (lmc_softc_t * const sc, int state)
515 {
516 if (state == LMC_CTL_CRC_LENGTH_32)
517 {
518 /* 32 bit */
519 sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
520 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
521 }
522 else
523 {
524 /* 16 bit */
525 sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
526 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
527 }
528
529 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
530 }
531
532 static void
533 lmc_ds3_watchdog (lmc_softc_t * const sc)
534 {
535
536 }
537
538
539 /*
540 * SSI methods
541 */
542
543 static void
544 lmc_ssi_init (lmc_softc_t * const sc)
545 {
546 u_int16_t mii17;
547 int cable;
548
549 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
550
551 mii17 = lmc_mii_readreg (sc, 0, 17);
552
553 cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT;
554 sc->ictl.cable_type = cable;
555
556 lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK);
557 }
558
559 static void
560 lmc_ssi_default (lmc_softc_t * const sc)
561 {
562 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
563
564 /*
565 * make TXCLOCK always be an output
566 */
567 lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK);
568
569 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
570 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
571 sc->lmc_media->set_speed (sc, NULL);
572 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
573 }
574
575 /*
576 * Given a user provided state, set ourselves up to match it. This will
577 * always reset the card if needed.
578 */
579 static void
580 lmc_ssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
581 {
582 if (ctl == NULL)
583 {
584 sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
585 sc->lmc_media->set_speed (sc, &sc->ictl);
586 lmc_set_protocol (sc, NULL);
587
588 return;
589 }
590
591 /*
592 * check for change in clock source
593 */
594 if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT
595 && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT)
596 {
597 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
598 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
599 }
600 else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT
601 && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT)
602 {
603 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
604 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
605 }
606
607 if (ctl->clock_rate != sc->ictl.clock_rate)
608 sc->lmc_media->set_speed (sc, ctl);
609
610 lmc_set_protocol (sc, ctl);
611 }
612
613 /*
614 * 1 == internal, 0 == external
615 */
616 static void
617 lmc_ssi_set_clock (lmc_softc_t * const sc, int ie)
618 {
619 int old;
620 old = ie;
621 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
622 {
623 sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
624 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
625 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
626 if(ie != old)
627 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
628 }
629 else
630 {
631 sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
632 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
633 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
634 if(ie != old)
635 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
636 }
637 }
638
639 static void
640 lmc_ssi_set_speed (lmc_softc_t * const sc, lmc_ctl_t * ctl)
641 {
642 lmc_ctl_t *ictl = &sc->ictl;
643 lmc_av9110_t *av;
644
645 /* original settings for clock rate of:
646 * 100 Khz (8,25,0,0,2) were incorrect
647 * they should have been 80,125,1,3,3
648 * There are 17 param combinations to produce this freq.
649 * For 1.5 Mhz use 120,100,1,1,2 (226 param. combinations)
650 */
651 if (ctl == NULL)
652 {
653 av = &ictl->cardspec.ssi;
654 ictl->clock_rate = 1500000;
655 av->f = ictl->clock_rate;
656 av->n = 120;
657 av->m = 100;
658 av->v = 1;
659 av->x = 1;
660 av->r = 2;
661
662 write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
663 return;
664 }
665
666 av = &ctl->cardspec.ssi;
667
668 if (av->f == 0)
669 return;
670
671 ictl->clock_rate = av->f; /* really, this is the rate we are */
672 ictl->cardspec.ssi = *av;
673
674 write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
675 }
676
677 /*
678 * return hardware link status.
679 * 0 == link is down, 1 == link is up.
680 */
681 static int
682 lmc_ssi_get_link_status (lmc_softc_t * const sc)
683 {
684 u_int16_t link_status;
685 u_int32_t ticks;
686 int ret = 1;
687 int hw_hdsk = 1;
688
689 /*
690 * missing CTS? Hmm. If we require CTS on, we may never get the
691 * link to come up, so omit it in this test.
692 *
693 * Also, it seems that with a loopback cable, DCD isn't asserted,
694 * so just check for things like this:
695 * DSR _must_ be asserted.
696 * One of DCD or CTS must be asserted.
697 */
698
699 /* LMC 1000 (SSI) LED definitions
700 * led0 Green = power to adapter, Gate Array loaded &
701 * driver attached
702 * led1 Green = DSR and DTR and RTS and CTS are set
703 * led2 Green = Cable detected
704 * led3 red = No timing is available from the
705 * cable or the on-board frequency
706 * generator.
707 */
708
709 link_status = lmc_mii_readreg (sc, 0, 16);
710
711 /* Is the transmit clock still available */
712 ticks = LMC_CSR_READ (sc, csr_gp_timer);
713 ticks = 0x0000ffff - (ticks & 0x0000ffff);
714
715 lmc_led_on (sc, LMC_MII16_LED0);
716
717 /* ====== transmit clock determination ===== */
718 if (sc->lmc_timing == LMC_CTL_CLOCK_SOURCE_INT) {
719 lmc_led_off(sc, LMC_MII16_LED3);
720 }
721 else if (ticks == 0 ) { /* no clock found ? */
722 ret = 0;
723 if(sc->last_led_err[3] != 1){
724 sc->stats.tx_lossOfClockCnt++;
725 printk(KERN_WARNING "%s: Lost Clock, Link Down\n", sc->name);
726 }
727 sc->last_led_err[3] = 1;
728 lmc_led_on (sc, LMC_MII16_LED3); /* turn ON red LED */
729 }
730 else {
731 if(sc->last_led_err[3] == 1)
732 printk(KERN_WARNING "%s: Clock Returned\n", sc->name);
733 sc->last_led_err[3] = 0;
734 lmc_led_off (sc, LMC_MII16_LED3); /* turn OFF red LED */
735 }
736
737 if ((link_status & LMC_MII16_SSI_DSR) == 0) { /* Also HSSI CA */
738 ret = 0;
739 hw_hdsk = 0;
740 }
741
742 #ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE
743 if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0){
744 ret = 0;
745 hw_hdsk = 0;
746 }
747 #endif
748
749 if(hw_hdsk == 0){
750 if(sc->last_led_err[1] != 1)
751 printk(KERN_WARNING "%s: DSR not asserted\n", sc->name);
752 sc->last_led_err[1] = 1;
753 lmc_led_off(sc, LMC_MII16_LED1);
754 }
755 else {
756 if(sc->last_led_err[1] != 0)
757 printk(KERN_WARNING "%s: DSR now asserted\n", sc->name);
758 sc->last_led_err[1] = 0;
759 lmc_led_on(sc, LMC_MII16_LED1);
760 }
761
762 if(ret == 1) {
763 lmc_led_on(sc, LMC_MII16_LED2); /* Over all good status? */
764 }
765
766 return ret;
767 }
768
769 static void
770 lmc_ssi_set_link_status (lmc_softc_t * const sc, int state)
771 {
772 if (state == LMC_LINK_UP)
773 {
774 sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
775 printk (LMC_PRINTF_FMT ": asserting DTR and RTS\n", LMC_PRINTF_ARGS);
776 }
777 else
778 {
779 sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
780 printk (LMC_PRINTF_FMT ": deasserting DTR and RTS\n", LMC_PRINTF_ARGS);
781 }
782
783 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
784
785 }
786
787 /*
788 * 0 == 16bit, 1 == 32bit
789 */
790 static void
791 lmc_ssi_set_crc_length (lmc_softc_t * const sc, int state)
792 {
793 if (state == LMC_CTL_CRC_LENGTH_32)
794 {
795 /* 32 bit */
796 sc->lmc_miireg16 |= LMC_MII16_SSI_CRC;
797 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
798 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
799
800 }
801 else
802 {
803 /* 16 bit */
804 sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC;
805 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
806 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
807 }
808
809 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
810 }
811
812 /*
813 * These are bits to program the ssi frequency generator
814 */
815 static inline void
816 write_av9110_bit (lmc_softc_t * sc, int c)
817 {
818 /*
819 * set the data bit as we need it.
820 */
821 sc->lmc_gpio &= ~(LMC_GEP_CLK);
822 if (c & 0x01)
823 sc->lmc_gpio |= LMC_GEP_DATA;
824 else
825 sc->lmc_gpio &= ~(LMC_GEP_DATA);
826 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
827
828 /*
829 * set the clock to high
830 */
831 sc->lmc_gpio |= LMC_GEP_CLK;
832 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
833
834 /*
835 * set the clock to low again.
836 */
837 sc->lmc_gpio &= ~(LMC_GEP_CLK);
838 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
839 }
840
841 static void
842 write_av9110 (lmc_softc_t * sc, u_int32_t n, u_int32_t m, u_int32_t v,
843 u_int32_t x, u_int32_t r)
844 {
845 int i;
846
847 #if 0
848 printk (LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
849 LMC_PRINTF_ARGS, sc->ictl.clock_rate, n, m, v, x, r);
850 #endif
851
852 sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR;
853 sc->lmc_gpio &= ~(LMC_GEP_DATA | LMC_GEP_CLK);
854 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
855
856 /*
857 * Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
858 * as outputs.
859 */
860 lmc_gpio_mkoutput (sc, (LMC_GEP_DATA | LMC_GEP_CLK
861 | LMC_GEP_SSI_GENERATOR));
862
863 sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR);
864 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
865
866 /*
867 * a shifting we will go...
868 */
869 for (i = 0; i < 7; i++)
870 write_av9110_bit (sc, n >> i);
871 for (i = 0; i < 7; i++)
872 write_av9110_bit (sc, m >> i);
873 for (i = 0; i < 1; i++)
874 write_av9110_bit (sc, v >> i);
875 for (i = 0; i < 2; i++)
876 write_av9110_bit (sc, x >> i);
877 for (i = 0; i < 2; i++)
878 write_av9110_bit (sc, r >> i);
879 for (i = 0; i < 5; i++)
880 write_av9110_bit (sc, 0x17 >> i);
881
882 /*
883 * stop driving serial-related signals
884 */
885 lmc_gpio_mkinput (sc,
886 (LMC_GEP_DATA | LMC_GEP_CLK
887 | LMC_GEP_SSI_GENERATOR));
888 }
889
890 static void
891 lmc_ssi_watchdog (lmc_softc_t * const sc)
892 {
893 u_int16_t mii17 = lmc_mii_readreg (sc, 0, 17);
894 if (((mii17 >> 3) & 7) == 7)
895 {
896 lmc_led_off (sc, LMC_MII16_LED2);
897 }
898 else
899 {
900 lmc_led_on (sc, LMC_MII16_LED2);
901 }
902
903 }
904
905 /*
906 * T1 methods
907 */
908
909 /*
910 * The framer regs are multiplexed through MII regs 17 & 18
911 * write the register address to MII reg 17 and the * data to MII reg 18. */
912 static void
913 lmc_t1_write (lmc_softc_t * const sc, int a, int d)
914 {
915 lmc_mii_writereg (sc, 0, 17, a);
916 lmc_mii_writereg (sc, 0, 18, d);
917 }
918
919 /* Save a warning
920 static int
921 lmc_t1_read (lmc_softc_t * const sc, int a)
922 {
923 lmc_mii_writereg (sc, 0, 17, a);
924 return lmc_mii_readreg (sc, 0, 18);
925 }
926 */
927
928
929 static void
930 lmc_t1_init (lmc_softc_t * const sc)
931 {
932 u_int16_t mii16;
933 int i;
934
935 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200;
936 mii16 = lmc_mii_readreg (sc, 0, 16);
937
938 /* reset 8370 */
939 mii16 &= ~LMC_MII16_T1_RST;
940 lmc_mii_writereg (sc, 0, 16, mii16 | LMC_MII16_T1_RST);
941 lmc_mii_writereg (sc, 0, 16, mii16);
942
943 /* set T1 or E1 line. Uses sc->lmcmii16 reg in function so update it */
944 sc->lmc_miireg16 = mii16;
945 lmc_t1_set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1);
946 mii16 = sc->lmc_miireg16;
947
948 lmc_t1_write (sc, 0x01, 0x1B); /* CR0 - primary control */
949 lmc_t1_write (sc, 0x02, 0x42); /* JAT_CR - jitter atten config */
950 lmc_t1_write (sc, 0x14, 0x00); /* LOOP - loopback config */
951 lmc_t1_write (sc, 0x15, 0x00); /* DL3_TS - external data link timeslot */
952 lmc_t1_write (sc, 0x18, 0xFF); /* PIO - programmable I/O */
953 lmc_t1_write (sc, 0x19, 0x30); /* POE - programmable OE */
954 lmc_t1_write (sc, 0x1A, 0x0F); /* CMUX - clock input mux */
955 lmc_t1_write (sc, 0x20, 0x41); /* LIU_CR - RX LIU config */
956 lmc_t1_write (sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */
957 lmc_t1_write (sc, 0x40, 0x03); /* RCR0 - RX config */
958 lmc_t1_write (sc, 0x45, 0x00); /* RALM - RX alarm config */
959 lmc_t1_write (sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */
960 lmc_t1_write (sc, 0x68, 0x40); /* TLIU_CR - TX LIU config */
961 lmc_t1_write (sc, 0x70, 0x0D); /* TCR0 - TX framer config */
962 lmc_t1_write (sc, 0x71, 0x05); /* TCR1 - TX config */
963 lmc_t1_write (sc, 0x72, 0x0B); /* TFRM - TX frame format */
964 lmc_t1_write (sc, 0x73, 0x00); /* TERROR - TX error insert */
965 lmc_t1_write (sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */
966 lmc_t1_write (sc, 0x75, 0x00); /* TALM - TX alarm signal config */
967 lmc_t1_write (sc, 0x76, 0x00); /* TPATT - TX test pattern config */
968 lmc_t1_write (sc, 0x77, 0x00); /* TLB - TX inband loopback config */
969 lmc_t1_write (sc, 0x90, 0x05); /* CLAD_CR - clock rate adapter config */
970 lmc_t1_write (sc, 0x91, 0x05); /* CSEL - clad freq sel */
971 lmc_t1_write (sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */
972 lmc_t1_write (sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */
973 lmc_t1_write (sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */
974 lmc_t1_write (sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */
975 lmc_t1_write (sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */
976 for (i = 0; i < 32; i++)
977 {
978 lmc_t1_write (sc, 0x0E0 + i, 0x00); /* SBCn - sys bus per-channel ctl */
979 lmc_t1_write (sc, 0x100 + i, 0x00); /* TPCn - TX per-channel ctl */
980 lmc_t1_write (sc, 0x180 + i, 0x00); /* RPCn - RX per-channel ctl */
981 }
982 for (i = 1; i < 25; i++)
983 {
984 lmc_t1_write (sc, 0x0E0 + i, 0x0D); /* SBCn - sys bus per-channel ctl */
985 }
986
987 mii16 |= LMC_MII16_T1_XOE;
988 lmc_mii_writereg (sc, 0, 16, mii16);
989 sc->lmc_miireg16 = mii16;
990 }
991
992 static void
993 lmc_t1_default (lmc_softc_t * const sc)
994 {
995 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
996 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
997 sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
998 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
999 /* Right now we can only clock from out internal source */
1000 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
1001 }
1002 /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed.
1003 */
1004 static void
1005 lmc_t1_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
1006 {
1007 if (ctl == NULL)
1008 {
1009 sc->lmc_media->set_circuit_type (sc, sc->ictl.circuit_type);
1010 lmc_set_protocol (sc, NULL);
1011
1012 return;
1013 }
1014 /*
1015 * check for change in circuit type */
1016 if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1
1017 && sc->ictl.circuit_type ==
1018 LMC_CTL_CIRCUIT_TYPE_E1) sc->lmc_media->set_circuit_type (sc,
1019 LMC_CTL_CIRCUIT_TYPE_E1);
1020 else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1
1021 && sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1)
1022 sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
1023 lmc_set_protocol (sc, ctl);
1024 }
1025 /*
1026 * return hardware link status.
1027 * 0 == link is down, 1 == link is up.
1028 */ static int
1029 lmc_t1_get_link_status (lmc_softc_t * const sc)
1030 {
1031 u_int16_t link_status;
1032 int ret = 1;
1033
1034 /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
1035 * led0 yellow = far-end adapter is in Red alarm condition
1036 * led1 blue = received an Alarm Indication signal
1037 * (upstream failure)
1038 * led2 Green = power to adapter, Gate Array loaded & driver
1039 * attached
1040 * led3 red = Loss of Signal (LOS) or out of frame (OOF)
1041 * conditions detected on T3 receive signal
1042 */
1043 lmc_trace(sc->lmc_device, "lmc_t1_get_link_status in");
1044 lmc_led_on(sc, LMC_DS3_LED2);
1045
1046 lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM1_STATUS);
1047 link_status = lmc_mii_readreg (sc, 0, 18);
1048
1049
1050 if (link_status & T1F_RAIS) { /* turn on blue LED */
1051 ret = 0;
1052 if(sc->last_led_err[1] != 1){
1053 printk(KERN_WARNING "%s: Receive AIS/Blue Alarm. Far end in RED alarm\n", sc->name);
1054 }
1055 lmc_led_on(sc, LMC_DS3_LED1);
1056 sc->last_led_err[1] = 1;
1057 }
1058 else {
1059 if(sc->last_led_err[1] != 0){
1060 printk(KERN_WARNING "%s: End AIS/Blue Alarm\n", sc->name);
1061 }
1062 lmc_led_off (sc, LMC_DS3_LED1);
1063 sc->last_led_err[1] = 0;
1064 }
1065
1066 /*
1067 * Yellow Alarm is nasty evil stuff, looks at data patterns
1068 * inside the channel and confuses it with HDLC framing
1069 * ignore all yellow alarms.
1070 *
1071 * Do listen to MultiFrame Yellow alarm which while implemented
1072 * different ways isn't in the channel and hence somewhat
1073 * more reliable
1074 */
1075
1076 if (link_status & T1F_RMYEL) {
1077 ret = 0;
1078 if(sc->last_led_err[0] != 1){
1079 printk(KERN_WARNING "%s: Receive Yellow AIS Alarm\n", sc->name);
1080 }
1081 lmc_led_on(sc, LMC_DS3_LED0);
1082 sc->last_led_err[0] = 1;
1083 }
1084 else {
1085 if(sc->last_led_err[0] != 0){
1086 printk(KERN_WARNING "%s: End of Yellow AIS Alarm\n", sc->name);
1087 }
1088 lmc_led_off(sc, LMC_DS3_LED0);
1089 sc->last_led_err[0] = 0;
1090 }
1091
1092 /*
1093 * Loss of signal and los of frame
1094 * Use the green bit to identify which one lit the led
1095 */
1096 if(link_status & T1F_RLOF){
1097 ret = 0;
1098 if(sc->last_led_err[3] != 1){
1099 printk(KERN_WARNING "%s: Local Red Alarm: Loss of Framing\n", sc->name);
1100 }
1101 lmc_led_on(sc, LMC_DS3_LED3);
1102 sc->last_led_err[3] = 1;
1103
1104 }
1105 else {
1106 if(sc->last_led_err[3] != 0){
1107 printk(KERN_WARNING "%s: End Red Alarm (LOF)\n", sc->name);
1108 }
1109 if( ! (link_status & T1F_RLOS))
1110 lmc_led_off(sc, LMC_DS3_LED3);
1111 sc->last_led_err[3] = 0;
1112 }
1113
1114 if(link_status & T1F_RLOS){
1115 ret = 0;
1116 if(sc->last_led_err[2] != 1){
1117 printk(KERN_WARNING "%s: Local Red Alarm: Loss of Signal\n", sc->name);
1118 }
1119 lmc_led_on(sc, LMC_DS3_LED3);
1120 sc->last_led_err[2] = 1;
1121
1122 }
1123 else {
1124 if(sc->last_led_err[2] != 0){
1125 printk(KERN_WARNING "%s: End Red Alarm (LOS)\n", sc->name);
1126 }
1127 if( ! (link_status & T1F_RLOF))
1128 lmc_led_off(sc, LMC_DS3_LED3);
1129 sc->last_led_err[2] = 0;
1130 }
1131
1132 sc->lmc_xinfo.t1_alarm1_status = link_status;
1133
1134 lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM2_STATUS);
1135 sc->lmc_xinfo.t1_alarm2_status = lmc_mii_readreg (sc, 0, 18);
1136
1137
1138 lmc_trace(sc->lmc_device, "lmc_t1_get_link_status out");
1139
1140 return ret;
1141 }
1142
1143 /*
1144 * 1 == T1 Circuit Type , 0 == E1 Circuit Type
1145 */
1146 static void
1147 lmc_t1_set_circuit_type (lmc_softc_t * const sc, int ie)
1148 {
1149 if (ie == LMC_CTL_CIRCUIT_TYPE_T1) {
1150 sc->lmc_miireg16 |= LMC_MII16_T1_Z;
1151 sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1;
1152 printk(KERN_INFO "%s: In T1 Mode\n", sc->name);
1153 }
1154 else {
1155 sc->lmc_miireg16 &= ~LMC_MII16_T1_Z;
1156 sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_E1;
1157 printk(KERN_INFO "%s: In E1 Mode\n", sc->name);
1158 }
1159
1160 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
1161
1162 }
1163
1164 /*
1165 * 0 == 16bit, 1 == 32bit */
1166 static void
1167 lmc_t1_set_crc_length (lmc_softc_t * const sc, int state)
1168 {
1169 if (state == LMC_CTL_CRC_LENGTH_32)
1170 {
1171 /* 32 bit */
1172 sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
1173 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
1174 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
1175
1176 }
1177 else
1178 {
1179 /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
1180 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
1181 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
1182
1183 }
1184
1185 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
1186 }
1187
1188 /*
1189 * 1 == internal, 0 == external
1190 */
1191 static void
1192 lmc_t1_set_clock (lmc_softc_t * const sc, int ie)
1193 {
1194 int old;
1195 old = ie;
1196 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
1197 {
1198 sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
1199 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
1200 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
1201 if(old != ie)
1202 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
1203 }
1204 else
1205 {
1206 sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
1207 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
1208 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
1209 if(old != ie)
1210 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
1211 }
1212 }
1213
1214 static void
1215 lmc_t1_watchdog (lmc_softc_t * const sc)
1216 {
1217 }
1218
1219 static void
1220 lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl)
1221 {
1222 if (!ctl)
1223 sc->ictl.keepalive_onoff = LMC_CTL_ON;
1224 }
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