1 // SPDX-License-Identifier: GPL-2.0-only
2 /* $Id: lmc_media.c,v 1.13 2000/04/11 05:25:26 asj Exp $ */
3
4 #include <linux/kernel.h>
5 #include <linux/string.h>
6 #include <linux/timer.h>
7 #include <linux/ptrace.h>
8 #include <linux/errno.h>
9 #include <linux/ioport.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 <asm/processor.h> /* Processor type for cache alignment. */
20 #include <asm/io.h>
21 #include <asm/dma.h>
22
23 #include <linux/uaccess.h>
24
25 #include "lmc.h"
26 #include "lmc_var.h"
27 #include "lmc_ioctl.h"
28 #include "lmc_debug.h"
29
30 #define CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE 1
31
32 /*
33 * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
34 * All rights reserved. www.lanmedia.com
35 *
36 * This code is written by:
37 * Andrew Stanley-Jones (asj@cban.com)
38 * Rob Braun (bbraun@vix.com),
39 * Michael Graff (explorer@vix.com) and
40 * Matt Thomas (matt@3am-software.com).
41 */
42
43 /*
44 * protocol independent method.
45 */
46 static void lmc_set_protocol (lmc_softc_t * const, lmc_ctl_t *);
47
48 /*
49 * media independent methods to check on media status, link, light LEDs,
50 * etc.
51 */
52 static void lmc_ds3_init (lmc_softc_t * const);
53 static void lmc_ds3_default (lmc_softc_t * const);
54 static void lmc_ds3_set_status (lmc_softc_t * const, lmc_ctl_t *);
55 static void lmc_ds3_set_100ft (lmc_softc_t * const, int);
56 static int lmc_ds3_get_link_status (lmc_softc_t * const);
57 static void lmc_ds3_set_crc_length (lmc_softc_t * const, int);
58 static void lmc_ds3_set_scram (lmc_softc_t * const, int);
59 static void lmc_ds3_watchdog (lmc_softc_t * const);
60
61 static void lmc_hssi_init (lmc_softc_t * const);
62 static void lmc_hssi_default (lmc_softc_t * const);
63 static void lmc_hssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
64 static void lmc_hssi_set_clock (lmc_softc_t * const, int);
65 static int lmc_hssi_get_link_status (lmc_softc_t * const);
66 static void lmc_hssi_set_link_status (lmc_softc_t * const, int);
67 static void lmc_hssi_set_crc_length (lmc_softc_t * const, int);
68 static void lmc_hssi_watchdog (lmc_softc_t * const);
69
70 static void lmc_ssi_init (lmc_softc_t * const);
71 static void lmc_ssi_default (lmc_softc_t * const);
72 static void lmc_ssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
73 static void lmc_ssi_set_clock (lmc_softc_t * const, int);
74 static void lmc_ssi_set_speed (lmc_softc_t * const, lmc_ctl_t *);
75 static int lmc_ssi_get_link_status (lmc_softc_t * const);
76 static void lmc_ssi_set_link_status (lmc_softc_t * const, int);
77 static void lmc_ssi_set_crc_length (lmc_softc_t * const, int);
78 static void lmc_ssi_watchdog (lmc_softc_t * const);
79
80 static void lmc_t1_init (lmc_softc_t * const);
81 static void lmc_t1_default (lmc_softc_t * const);
82 static void lmc_t1_set_status (lmc_softc_t * const, lmc_ctl_t *);
83 static int lmc_t1_get_link_status (lmc_softc_t * const);
84 static void lmc_t1_set_circuit_type (lmc_softc_t * const, int);
85 static void lmc_t1_set_crc_length (lmc_softc_t * const, int);
86 static void lmc_t1_set_clock (lmc_softc_t * const, int);
87 static void lmc_t1_watchdog (lmc_softc_t * const);
88
89 static void lmc_dummy_set_1 (lmc_softc_t * const, int);
90 static void lmc_dummy_set2_1 (lmc_softc_t * const, lmc_ctl_t *);
91
92 static inline void write_av9110_bit (lmc_softc_t *, int);
93 static void write_av9110(lmc_softc_t *, u32, u32, u32, u32, u32);
94
95 lmc_media_t lmc_ds3_media = {
96 .init = lmc_ds3_init, /* special media init stuff */
97 .defaults = lmc_ds3_default, /* reset to default state */
98 .set_status = lmc_ds3_set_status, /* reset status to state provided */
99 .set_clock_source = lmc_dummy_set_1, /* set clock source */
100 .set_speed = lmc_dummy_set2_1, /* set line speed */
101 .set_cable_length = lmc_ds3_set_100ft, /* set cable length */
102 .set_scrambler = lmc_ds3_set_scram, /* set scrambler */
103 .get_link_status = lmc_ds3_get_link_status, /* get link status */
104 .set_link_status = lmc_dummy_set_1, /* set link status */
105 .set_crc_length = lmc_ds3_set_crc_length, /* set CRC length */
106 .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
107 .watchdog = lmc_ds3_watchdog
108 };
109
110 lmc_media_t lmc_hssi_media = {
111 .init = lmc_hssi_init, /* special media init stuff */
112 .defaults = lmc_hssi_default, /* reset to default state */
113 .set_status = lmc_hssi_set_status, /* reset status to state provided */
114 .set_clock_source = lmc_hssi_set_clock, /* set clock source */
115 .set_speed = lmc_dummy_set2_1, /* set line speed */
116 .set_cable_length = lmc_dummy_set_1, /* set cable length */
117 .set_scrambler = lmc_dummy_set_1, /* set scrambler */
118 .get_link_status = lmc_hssi_get_link_status, /* get link status */
119 .set_link_status = lmc_hssi_set_link_status, /* set link status */
120 .set_crc_length = lmc_hssi_set_crc_length, /* set CRC length */
121 .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
122 .watchdog = lmc_hssi_watchdog
123 };
124
125 lmc_media_t lmc_ssi_media = {
126 .init = lmc_ssi_init, /* special media init stuff */
127 .defaults = lmc_ssi_default, /* reset to default state */
128 .set_status = lmc_ssi_set_status, /* reset status to state provided */
129 .set_clock_source = lmc_ssi_set_clock, /* set clock source */
130 .set_speed = lmc_ssi_set_speed, /* set line speed */
131 .set_cable_length = lmc_dummy_set_1, /* set cable length */
132 .set_scrambler = lmc_dummy_set_1, /* set scrambler */
133 .get_link_status = lmc_ssi_get_link_status, /* get link status */
134 .set_link_status = lmc_ssi_set_link_status, /* set link status */
135 .set_crc_length = lmc_ssi_set_crc_length, /* set CRC length */
136 .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
137 .watchdog = lmc_ssi_watchdog
138 };
139
140 lmc_media_t lmc_t1_media = {
141 .init = lmc_t1_init, /* special media init stuff */
142 .defaults = lmc_t1_default, /* reset to default state */
143 .set_status = lmc_t1_set_status, /* reset status to state provided */
144 .set_clock_source = lmc_t1_set_clock, /* set clock source */
145 .set_speed = lmc_dummy_set2_1, /* set line speed */
146 .set_cable_length = lmc_dummy_set_1, /* set cable length */
147 .set_scrambler = lmc_dummy_set_1, /* set scrambler */
148 .get_link_status = lmc_t1_get_link_status, /* get link status */
149 .set_link_status = lmc_dummy_set_1, /* set link status */
150 .set_crc_length = lmc_t1_set_crc_length, /* set CRC length */
151 .set_circuit_type = lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
152 .watchdog = lmc_t1_watchdog
153 };
154
155 static void
lmc_dummy_set_1(lmc_softc_t * const sc,int a)156 lmc_dummy_set_1 (lmc_softc_t * const sc, int a)
157 {
158 }
159
160 static void
lmc_dummy_set2_1(lmc_softc_t * const sc,lmc_ctl_t * a)161 lmc_dummy_set2_1 (lmc_softc_t * const sc, lmc_ctl_t * a)
162 {
163 }
164
165 /*
166 * HSSI methods
167 */
168
169 static void
lmc_hssi_init(lmc_softc_t * const sc)170 lmc_hssi_init (lmc_softc_t * const sc)
171 {
172 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
173
174 lmc_gpio_mkoutput (sc, LMC_GEP_HSSI_CLOCK);
175 }
176
177 static void
lmc_hssi_default(lmc_softc_t * const sc)178 lmc_hssi_default (lmc_softc_t * const sc)
179 {
180 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
181
182 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
183 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
184 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
185 }
186
187 /*
188 * Given a user provided state, set ourselves up to match it. This will
189 * always reset the card if needed.
190 */
191 static void
lmc_hssi_set_status(lmc_softc_t * const sc,lmc_ctl_t * ctl)192 lmc_hssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
193 {
194 if (ctl == NULL)
195 {
196 sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
197 lmc_set_protocol (sc, NULL);
198
199 return;
200 }
201
202 /*
203 * check for change in clock source
204 */
205 if (ctl->clock_source && !sc->ictl.clock_source)
206 {
207 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
208 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
209 }
210 else if (!ctl->clock_source && sc->ictl.clock_source)
211 {
212 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
213 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
214 }
215
216 lmc_set_protocol (sc, ctl);
217 }
218
219 /*
220 * 1 == internal, 0 == external
221 */
222 static void
lmc_hssi_set_clock(lmc_softc_t * const sc,int ie)223 lmc_hssi_set_clock (lmc_softc_t * const sc, int ie)
224 {
225 int old;
226 old = sc->ictl.clock_source;
227 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
228 {
229 sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
230 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
231 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
232 if(old != ie)
233 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
234 }
235 else
236 {
237 sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
238 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
239 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
240 if(old != ie)
241 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
242 }
243 }
244
245 /*
246 * return hardware link status.
247 * 0 == link is down, 1 == link is up.
248 */
249 static int
lmc_hssi_get_link_status(lmc_softc_t * const sc)250 lmc_hssi_get_link_status (lmc_softc_t * const sc)
251 {
252 /*
253 * We're using the same code as SSI since
254 * they're practically the same
255 */
256 return lmc_ssi_get_link_status(sc);
257 }
258
259 static void
lmc_hssi_set_link_status(lmc_softc_t * const sc,int state)260 lmc_hssi_set_link_status (lmc_softc_t * const sc, int state)
261 {
262 if (state == LMC_LINK_UP)
263 sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
264 else
265 sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
266
267 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
268 }
269
270 /*
271 * 0 == 16bit, 1 == 32bit
272 */
273 static void
lmc_hssi_set_crc_length(lmc_softc_t * const sc,int state)274 lmc_hssi_set_crc_length (lmc_softc_t * const sc, int state)
275 {
276 if (state == LMC_CTL_CRC_LENGTH_32)
277 {
278 /* 32 bit */
279 sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
280 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
281 }
282 else
283 {
284 /* 16 bit */
285 sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
286 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
287 }
288
289 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
290 }
291
292 static void
lmc_hssi_watchdog(lmc_softc_t * const sc)293 lmc_hssi_watchdog (lmc_softc_t * const sc)
294 {
295 /* HSSI is blank */
296 }
297
298 /*
299 * DS3 methods
300 */
301
302 /*
303 * Set cable length
304 */
305 static void
lmc_ds3_set_100ft(lmc_softc_t * const sc,int ie)306 lmc_ds3_set_100ft (lmc_softc_t * const sc, int ie)
307 {
308 if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT)
309 {
310 sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
311 sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
312 }
313 else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT)
314 {
315 sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
316 sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
317 }
318 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
319 }
320
321 static void
lmc_ds3_default(lmc_softc_t * const sc)322 lmc_ds3_default (lmc_softc_t * const sc)
323 {
324 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
325
326 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
327 sc->lmc_media->set_cable_length (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
328 sc->lmc_media->set_scrambler (sc, LMC_CTL_OFF);
329 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
330 }
331
332 /*
333 * Given a user provided state, set ourselves up to match it. This will
334 * always reset the card if needed.
335 */
336 static void
lmc_ds3_set_status(lmc_softc_t * const sc,lmc_ctl_t * ctl)337 lmc_ds3_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
338 {
339 if (ctl == NULL)
340 {
341 sc->lmc_media->set_cable_length (sc, sc->ictl.cable_length);
342 sc->lmc_media->set_scrambler (sc, sc->ictl.scrambler_onoff);
343 lmc_set_protocol (sc, NULL);
344
345 return;
346 }
347
348 /*
349 * check for change in cable length setting
350 */
351 if (ctl->cable_length && !sc->ictl.cable_length)
352 lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
353 else if (!ctl->cable_length && sc->ictl.cable_length)
354 lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
355
356 /*
357 * Check for change in scrambler setting (requires reset)
358 */
359 if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
360 lmc_ds3_set_scram (sc, LMC_CTL_ON);
361 else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
362 lmc_ds3_set_scram (sc, LMC_CTL_OFF);
363
364 lmc_set_protocol (sc, ctl);
365 }
366
367 static void
lmc_ds3_init(lmc_softc_t * const sc)368 lmc_ds3_init (lmc_softc_t * const sc)
369 {
370 int i;
371
372 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
373
374 /* writes zeros everywhere */
375 for (i = 0; i < 21; i++)
376 {
377 lmc_mii_writereg (sc, 0, 17, i);
378 lmc_mii_writereg (sc, 0, 18, 0);
379 }
380
381 /* set some essential bits */
382 lmc_mii_writereg (sc, 0, 17, 1);
383 lmc_mii_writereg (sc, 0, 18, 0x25); /* ser, xtx */
384
385 lmc_mii_writereg (sc, 0, 17, 5);
386 lmc_mii_writereg (sc, 0, 18, 0x80); /* emode */
387
388 lmc_mii_writereg (sc, 0, 17, 14);
389 lmc_mii_writereg (sc, 0, 18, 0x30); /* rcgen, tcgen */
390
391 /* clear counters and latched bits */
392 for (i = 0; i < 21; i++)
393 {
394 lmc_mii_writereg (sc, 0, 17, i);
395 lmc_mii_readreg (sc, 0, 18);
396 }
397 }
398
399 /*
400 * 1 == DS3 payload scrambled, 0 == not scrambled
401 */
402 static void
lmc_ds3_set_scram(lmc_softc_t * const sc,int ie)403 lmc_ds3_set_scram (lmc_softc_t * const sc, int ie)
404 {
405 if (ie == LMC_CTL_ON)
406 {
407 sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
408 sc->ictl.scrambler_onoff = LMC_CTL_ON;
409 }
410 else
411 {
412 sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
413 sc->ictl.scrambler_onoff = LMC_CTL_OFF;
414 }
415 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
416 }
417
418 /*
419 * return hardware link status.
420 * 0 == link is down, 1 == link is up.
421 */
422 static int
lmc_ds3_get_link_status(lmc_softc_t * const sc)423 lmc_ds3_get_link_status (lmc_softc_t * const sc)
424 {
425 u16 link_status, link_status_11;
426 int ret = 1;
427
428 lmc_mii_writereg (sc, 0, 17, 7);
429 link_status = lmc_mii_readreg (sc, 0, 18);
430
431 /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
432 * led0 yellow = far-end adapter is in Red alarm condition
433 * led1 blue = received an Alarm Indication signal
434 * (upstream failure)
435 * led2 Green = power to adapter, Gate Array loaded & driver
436 * attached
437 * led3 red = Loss of Signal (LOS) or out of frame (OOF)
438 * conditions detected on T3 receive signal
439 */
440
441 lmc_led_on(sc, LMC_DS3_LED2);
442
443 if ((link_status & LMC_FRAMER_REG0_DLOS) ||
444 (link_status & LMC_FRAMER_REG0_OOFS)){
445 ret = 0;
446 if(sc->last_led_err[3] != 1){
447 u16 r1;
448 lmc_mii_writereg (sc, 0, 17, 01); /* Turn on Xbit error as our cisco does */
449 r1 = lmc_mii_readreg (sc, 0, 18);
450 r1 &= 0xfe;
451 lmc_mii_writereg(sc, 0, 18, r1);
452 printk(KERN_WARNING "%s: Red Alarm - Loss of Signal or Loss of Framing\n", sc->name);
453 }
454 lmc_led_on(sc, LMC_DS3_LED3); /* turn on red LED */
455 sc->last_led_err[3] = 1;
456 }
457 else {
458 lmc_led_off(sc, LMC_DS3_LED3); /* turn on red LED */
459 if(sc->last_led_err[3] == 1){
460 u16 r1;
461 lmc_mii_writereg (sc, 0, 17, 01); /* Turn off Xbit error */
462 r1 = lmc_mii_readreg (sc, 0, 18);
463 r1 |= 0x01;
464 lmc_mii_writereg(sc, 0, 18, r1);
465 }
466 sc->last_led_err[3] = 0;
467 }
468
469 lmc_mii_writereg(sc, 0, 17, 0x10);
470 link_status_11 = lmc_mii_readreg(sc, 0, 18);
471 if((link_status & LMC_FRAMER_REG0_AIS) ||
472 (link_status_11 & LMC_FRAMER_REG10_XBIT)) {
473 ret = 0;
474 if(sc->last_led_err[0] != 1){
475 printk(KERN_WARNING "%s: AIS Alarm or XBit Error\n", sc->name);
476 printk(KERN_WARNING "%s: Remote end has loss of signal or framing\n", sc->name);
477 }
478 lmc_led_on(sc, LMC_DS3_LED0);
479 sc->last_led_err[0] = 1;
480 }
481 else {
482 lmc_led_off(sc, LMC_DS3_LED0);
483 sc->last_led_err[0] = 0;
484 }
485
486 lmc_mii_writereg (sc, 0, 17, 9);
487 link_status = lmc_mii_readreg (sc, 0, 18);
488
489 if(link_status & LMC_FRAMER_REG9_RBLUE){
490 ret = 0;
491 if(sc->last_led_err[1] != 1){
492 printk(KERN_WARNING "%s: Blue Alarm - Receiving all 1's\n", sc->name);
493 }
494 lmc_led_on(sc, LMC_DS3_LED1);
495 sc->last_led_err[1] = 1;
496 }
497 else {
498 lmc_led_off(sc, LMC_DS3_LED1);
499 sc->last_led_err[1] = 0;
500 }
501
502 return ret;
503 }
504
505 /*
506 * 0 == 16bit, 1 == 32bit
507 */
508 static void
lmc_ds3_set_crc_length(lmc_softc_t * const sc,int state)509 lmc_ds3_set_crc_length (lmc_softc_t * const sc, int state)
510 {
511 if (state == LMC_CTL_CRC_LENGTH_32)
512 {
513 /* 32 bit */
514 sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
515 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
516 }
517 else
518 {
519 /* 16 bit */
520 sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
521 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
522 }
523
524 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
525 }
526
527 static void
lmc_ds3_watchdog(lmc_softc_t * const sc)528 lmc_ds3_watchdog (lmc_softc_t * const sc)
529 {
530
531 }
532
533
534 /*
535 * SSI methods
536 */
537
lmc_ssi_init(lmc_softc_t * const sc)538 static void lmc_ssi_init(lmc_softc_t * const sc)
539 {
540 u16 mii17;
541 int cable;
542
543 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
544
545 mii17 = lmc_mii_readreg(sc, 0, 17);
546
547 cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT;
548 sc->ictl.cable_type = cable;
549
550 lmc_gpio_mkoutput(sc, LMC_GEP_SSI_TXCLOCK);
551 }
552
553 static void
lmc_ssi_default(lmc_softc_t * const sc)554 lmc_ssi_default (lmc_softc_t * const sc)
555 {
556 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
557
558 /*
559 * make TXCLOCK always be an output
560 */
561 lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK);
562
563 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
564 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
565 sc->lmc_media->set_speed (sc, NULL);
566 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
567 }
568
569 /*
570 * Given a user provided state, set ourselves up to match it. This will
571 * always reset the card if needed.
572 */
573 static void
lmc_ssi_set_status(lmc_softc_t * const sc,lmc_ctl_t * ctl)574 lmc_ssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
575 {
576 if (ctl == NULL)
577 {
578 sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
579 sc->lmc_media->set_speed (sc, &sc->ictl);
580 lmc_set_protocol (sc, NULL);
581
582 return;
583 }
584
585 /*
586 * check for change in clock source
587 */
588 if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT
589 && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT)
590 {
591 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
592 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
593 }
594 else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT
595 && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT)
596 {
597 sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
598 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
599 }
600
601 if (ctl->clock_rate != sc->ictl.clock_rate)
602 sc->lmc_media->set_speed (sc, ctl);
603
604 lmc_set_protocol (sc, ctl);
605 }
606
607 /*
608 * 1 == internal, 0 == external
609 */
610 static void
lmc_ssi_set_clock(lmc_softc_t * const sc,int ie)611 lmc_ssi_set_clock (lmc_softc_t * const sc, int ie)
612 {
613 int old;
614 old = ie;
615 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
616 {
617 sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
618 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
619 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
620 if(ie != old)
621 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
622 }
623 else
624 {
625 sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
626 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
627 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
628 if(ie != old)
629 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
630 }
631 }
632
633 static void
lmc_ssi_set_speed(lmc_softc_t * const sc,lmc_ctl_t * ctl)634 lmc_ssi_set_speed (lmc_softc_t * const sc, lmc_ctl_t * ctl)
635 {
636 lmc_ctl_t *ictl = &sc->ictl;
637 lmc_av9110_t *av;
638
639 /* original settings for clock rate of:
640 * 100 Khz (8,25,0,0,2) were incorrect
641 * they should have been 80,125,1,3,3
642 * There are 17 param combinations to produce this freq.
643 * For 1.5 Mhz use 120,100,1,1,2 (226 param. combinations)
644 */
645 if (ctl == NULL)
646 {
647 av = &ictl->cardspec.ssi;
648 ictl->clock_rate = 1500000;
649 av->f = ictl->clock_rate;
650 av->n = 120;
651 av->m = 100;
652 av->v = 1;
653 av->x = 1;
654 av->r = 2;
655
656 write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
657 return;
658 }
659
660 av = &ctl->cardspec.ssi;
661
662 if (av->f == 0)
663 return;
664
665 ictl->clock_rate = av->f; /* really, this is the rate we are */
666 ictl->cardspec.ssi = *av;
667
668 write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
669 }
670
671 /*
672 * return hardware link status.
673 * 0 == link is down, 1 == link is up.
674 */
675 static int
lmc_ssi_get_link_status(lmc_softc_t * const sc)676 lmc_ssi_get_link_status (lmc_softc_t * const sc)
677 {
678 u16 link_status;
679 u32 ticks;
680 int ret = 1;
681 int hw_hdsk = 1;
682
683 /*
684 * missing CTS? Hmm. If we require CTS on, we may never get the
685 * link to come up, so omit it in this test.
686 *
687 * Also, it seems that with a loopback cable, DCD isn't asserted,
688 * so just check for things like this:
689 * DSR _must_ be asserted.
690 * One of DCD or CTS must be asserted.
691 */
692
693 /* LMC 1000 (SSI) LED definitions
694 * led0 Green = power to adapter, Gate Array loaded &
695 * driver attached
696 * led1 Green = DSR and DTR and RTS and CTS are set
697 * led2 Green = Cable detected
698 * led3 red = No timing is available from the
699 * cable or the on-board frequency
700 * generator.
701 */
702
703 link_status = lmc_mii_readreg (sc, 0, 16);
704
705 /* Is the transmit clock still available */
706 ticks = LMC_CSR_READ (sc, csr_gp_timer);
707 ticks = 0x0000ffff - (ticks & 0x0000ffff);
708
709 lmc_led_on (sc, LMC_MII16_LED0);
710
711 /* ====== transmit clock determination ===== */
712 if (sc->lmc_timing == LMC_CTL_CLOCK_SOURCE_INT) {
713 lmc_led_off(sc, LMC_MII16_LED3);
714 }
715 else if (ticks == 0 ) { /* no clock found ? */
716 ret = 0;
717 if (sc->last_led_err[3] != 1) {
718 sc->extra_stats.tx_lossOfClockCnt++;
719 printk(KERN_WARNING "%s: Lost Clock, Link Down\n", sc->name);
720 }
721 sc->last_led_err[3] = 1;
722 lmc_led_on (sc, LMC_MII16_LED3); /* turn ON red LED */
723 }
724 else {
725 if(sc->last_led_err[3] == 1)
726 printk(KERN_WARNING "%s: Clock Returned\n", sc->name);
727 sc->last_led_err[3] = 0;
728 lmc_led_off (sc, LMC_MII16_LED3); /* turn OFF red LED */
729 }
730
731 if ((link_status & LMC_MII16_SSI_DSR) == 0) { /* Also HSSI CA */
732 ret = 0;
733 hw_hdsk = 0;
734 }
735
736 #ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE
737 if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0){
738 ret = 0;
739 hw_hdsk = 0;
740 }
741 #endif
742
743 if(hw_hdsk == 0){
744 if(sc->last_led_err[1] != 1)
745 printk(KERN_WARNING "%s: DSR not asserted\n", sc->name);
746 sc->last_led_err[1] = 1;
747 lmc_led_off(sc, LMC_MII16_LED1);
748 }
749 else {
750 if(sc->last_led_err[1] != 0)
751 printk(KERN_WARNING "%s: DSR now asserted\n", sc->name);
752 sc->last_led_err[1] = 0;
753 lmc_led_on(sc, LMC_MII16_LED1);
754 }
755
756 if(ret == 1) {
757 lmc_led_on(sc, LMC_MII16_LED2); /* Over all good status? */
758 }
759
760 return ret;
761 }
762
763 static void
lmc_ssi_set_link_status(lmc_softc_t * const sc,int state)764 lmc_ssi_set_link_status (lmc_softc_t * const sc, int state)
765 {
766 if (state == LMC_LINK_UP)
767 {
768 sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
769 printk (LMC_PRINTF_FMT ": asserting DTR and RTS\n", LMC_PRINTF_ARGS);
770 }
771 else
772 {
773 sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
774 printk (LMC_PRINTF_FMT ": deasserting DTR and RTS\n", LMC_PRINTF_ARGS);
775 }
776
777 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
778
779 }
780
781 /*
782 * 0 == 16bit, 1 == 32bit
783 */
784 static void
lmc_ssi_set_crc_length(lmc_softc_t * const sc,int state)785 lmc_ssi_set_crc_length (lmc_softc_t * const sc, int state)
786 {
787 if (state == LMC_CTL_CRC_LENGTH_32)
788 {
789 /* 32 bit */
790 sc->lmc_miireg16 |= LMC_MII16_SSI_CRC;
791 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
792 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
793
794 }
795 else
796 {
797 /* 16 bit */
798 sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC;
799 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
800 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
801 }
802
803 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
804 }
805
806 /*
807 * These are bits to program the ssi frequency generator
808 */
809 static inline void
write_av9110_bit(lmc_softc_t * sc,int c)810 write_av9110_bit (lmc_softc_t * sc, int c)
811 {
812 /*
813 * set the data bit as we need it.
814 */
815 sc->lmc_gpio &= ~(LMC_GEP_CLK);
816 if (c & 0x01)
817 sc->lmc_gpio |= LMC_GEP_DATA;
818 else
819 sc->lmc_gpio &= ~(LMC_GEP_DATA);
820 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
821
822 /*
823 * set the clock to high
824 */
825 sc->lmc_gpio |= LMC_GEP_CLK;
826 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
827
828 /*
829 * set the clock to low again.
830 */
831 sc->lmc_gpio &= ~(LMC_GEP_CLK);
832 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
833 }
834
write_av9110(lmc_softc_t * sc,u32 n,u32 m,u32 v,u32 x,u32 r)835 static void write_av9110(lmc_softc_t *sc, u32 n, u32 m, u32 v, u32 x, u32 r)
836 {
837 int i;
838
839 #if 0
840 printk (LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
841 LMC_PRINTF_ARGS, sc->ictl.clock_rate, n, m, v, x, r);
842 #endif
843
844 sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR;
845 sc->lmc_gpio &= ~(LMC_GEP_DATA | LMC_GEP_CLK);
846 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
847
848 /*
849 * Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
850 * as outputs.
851 */
852 lmc_gpio_mkoutput (sc, (LMC_GEP_DATA | LMC_GEP_CLK
853 | LMC_GEP_SSI_GENERATOR));
854
855 sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR);
856 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
857
858 /*
859 * a shifting we will go...
860 */
861 for (i = 0; i < 7; i++)
862 write_av9110_bit (sc, n >> i);
863 for (i = 0; i < 7; i++)
864 write_av9110_bit (sc, m >> i);
865 for (i = 0; i < 1; i++)
866 write_av9110_bit (sc, v >> i);
867 for (i = 0; i < 2; i++)
868 write_av9110_bit (sc, x >> i);
869 for (i = 0; i < 2; i++)
870 write_av9110_bit (sc, r >> i);
871 for (i = 0; i < 5; i++)
872 write_av9110_bit (sc, 0x17 >> i);
873
874 /*
875 * stop driving serial-related signals
876 */
877 lmc_gpio_mkinput (sc,
878 (LMC_GEP_DATA | LMC_GEP_CLK
879 | LMC_GEP_SSI_GENERATOR));
880 }
881
lmc_ssi_watchdog(lmc_softc_t * const sc)882 static void lmc_ssi_watchdog(lmc_softc_t * const sc)
883 {
884 u16 mii17 = lmc_mii_readreg(sc, 0, 17);
885 if (((mii17 >> 3) & 7) == 7)
886 lmc_led_off(sc, LMC_MII16_LED2);
887 else
888 lmc_led_on(sc, LMC_MII16_LED2);
889 }
890
891 /*
892 * T1 methods
893 */
894
895 /*
896 * The framer regs are multiplexed through MII regs 17 & 18
897 * write the register address to MII reg 17 and the * data to MII reg 18. */
898 static void
lmc_t1_write(lmc_softc_t * const sc,int a,int d)899 lmc_t1_write (lmc_softc_t * const sc, int a, int d)
900 {
901 lmc_mii_writereg (sc, 0, 17, a);
902 lmc_mii_writereg (sc, 0, 18, d);
903 }
904
905 /* Save a warning
906 static int
907 lmc_t1_read (lmc_softc_t * const sc, int a)
908 {
909 lmc_mii_writereg (sc, 0, 17, a);
910 return lmc_mii_readreg (sc, 0, 18);
911 }
912 */
913
914
915 static void
lmc_t1_init(lmc_softc_t * const sc)916 lmc_t1_init (lmc_softc_t * const sc)
917 {
918 u16 mii16;
919 int i;
920
921 sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200;
922 mii16 = lmc_mii_readreg (sc, 0, 16);
923
924 /* reset 8370 */
925 mii16 &= ~LMC_MII16_T1_RST;
926 lmc_mii_writereg (sc, 0, 16, mii16 | LMC_MII16_T1_RST);
927 lmc_mii_writereg (sc, 0, 16, mii16);
928
929 /* set T1 or E1 line. Uses sc->lmcmii16 reg in function so update it */
930 sc->lmc_miireg16 = mii16;
931 lmc_t1_set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1);
932 mii16 = sc->lmc_miireg16;
933
934 lmc_t1_write (sc, 0x01, 0x1B); /* CR0 - primary control */
935 lmc_t1_write (sc, 0x02, 0x42); /* JAT_CR - jitter atten config */
936 lmc_t1_write (sc, 0x14, 0x00); /* LOOP - loopback config */
937 lmc_t1_write (sc, 0x15, 0x00); /* DL3_TS - external data link timeslot */
938 lmc_t1_write (sc, 0x18, 0xFF); /* PIO - programmable I/O */
939 lmc_t1_write (sc, 0x19, 0x30); /* POE - programmable OE */
940 lmc_t1_write (sc, 0x1A, 0x0F); /* CMUX - clock input mux */
941 lmc_t1_write (sc, 0x20, 0x41); /* LIU_CR - RX LIU config */
942 lmc_t1_write (sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */
943 lmc_t1_write (sc, 0x40, 0x03); /* RCR0 - RX config */
944 lmc_t1_write (sc, 0x45, 0x00); /* RALM - RX alarm config */
945 lmc_t1_write (sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */
946 lmc_t1_write (sc, 0x68, 0x40); /* TLIU_CR - TX LIU config */
947 lmc_t1_write (sc, 0x70, 0x0D); /* TCR0 - TX framer config */
948 lmc_t1_write (sc, 0x71, 0x05); /* TCR1 - TX config */
949 lmc_t1_write (sc, 0x72, 0x0B); /* TFRM - TX frame format */
950 lmc_t1_write (sc, 0x73, 0x00); /* TERROR - TX error insert */
951 lmc_t1_write (sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */
952 lmc_t1_write (sc, 0x75, 0x00); /* TALM - TX alarm signal config */
953 lmc_t1_write (sc, 0x76, 0x00); /* TPATT - TX test pattern config */
954 lmc_t1_write (sc, 0x77, 0x00); /* TLB - TX inband loopback config */
955 lmc_t1_write (sc, 0x90, 0x05); /* CLAD_CR - clock rate adapter config */
956 lmc_t1_write (sc, 0x91, 0x05); /* CSEL - clad freq sel */
957 lmc_t1_write (sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */
958 lmc_t1_write (sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */
959 lmc_t1_write (sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */
960 lmc_t1_write (sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */
961 lmc_t1_write (sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */
962 for (i = 0; i < 32; i++)
963 {
964 lmc_t1_write (sc, 0x0E0 + i, 0x00); /* SBCn - sys bus per-channel ctl */
965 lmc_t1_write (sc, 0x100 + i, 0x00); /* TPCn - TX per-channel ctl */
966 lmc_t1_write (sc, 0x180 + i, 0x00); /* RPCn - RX per-channel ctl */
967 }
968 for (i = 1; i < 25; i++)
969 {
970 lmc_t1_write (sc, 0x0E0 + i, 0x0D); /* SBCn - sys bus per-channel ctl */
971 }
972
973 mii16 |= LMC_MII16_T1_XOE;
974 lmc_mii_writereg (sc, 0, 16, mii16);
975 sc->lmc_miireg16 = mii16;
976 }
977
978 static void
lmc_t1_default(lmc_softc_t * const sc)979 lmc_t1_default (lmc_softc_t * const sc)
980 {
981 sc->lmc_miireg16 = LMC_MII16_LED_ALL;
982 sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
983 sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
984 sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
985 /* Right now we can only clock from out internal source */
986 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
987 }
988 /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed.
989 */
990 static void
lmc_t1_set_status(lmc_softc_t * const sc,lmc_ctl_t * ctl)991 lmc_t1_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
992 {
993 if (ctl == NULL)
994 {
995 sc->lmc_media->set_circuit_type (sc, sc->ictl.circuit_type);
996 lmc_set_protocol (sc, NULL);
997
998 return;
999 }
1000 /*
1001 * check for change in circuit type */
1002 if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1
1003 && sc->ictl.circuit_type ==
1004 LMC_CTL_CIRCUIT_TYPE_E1) sc->lmc_media->set_circuit_type (sc,
1005 LMC_CTL_CIRCUIT_TYPE_E1);
1006 else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1
1007 && sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1)
1008 sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
1009 lmc_set_protocol (sc, ctl);
1010 }
1011 /*
1012 * return hardware link status.
1013 * 0 == link is down, 1 == link is up.
1014 */ static int
lmc_t1_get_link_status(lmc_softc_t * const sc)1015 lmc_t1_get_link_status (lmc_softc_t * const sc)
1016 {
1017 u16 link_status;
1018 int ret = 1;
1019
1020 /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
1021 * led0 yellow = far-end adapter is in Red alarm condition
1022 * led1 blue = received an Alarm Indication signal
1023 * (upstream failure)
1024 * led2 Green = power to adapter, Gate Array loaded & driver
1025 * attached
1026 * led3 red = Loss of Signal (LOS) or out of frame (OOF)
1027 * conditions detected on T3 receive signal
1028 */
1029 lmc_trace(sc->lmc_device, "lmc_t1_get_link_status in");
1030 lmc_led_on(sc, LMC_DS3_LED2);
1031
1032 lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM1_STATUS);
1033 link_status = lmc_mii_readreg (sc, 0, 18);
1034
1035
1036 if (link_status & T1F_RAIS) { /* turn on blue LED */
1037 ret = 0;
1038 if(sc->last_led_err[1] != 1){
1039 printk(KERN_WARNING "%s: Receive AIS/Blue Alarm. Far end in RED alarm\n", sc->name);
1040 }
1041 lmc_led_on(sc, LMC_DS3_LED1);
1042 sc->last_led_err[1] = 1;
1043 }
1044 else {
1045 if(sc->last_led_err[1] != 0){
1046 printk(KERN_WARNING "%s: End AIS/Blue Alarm\n", sc->name);
1047 }
1048 lmc_led_off (sc, LMC_DS3_LED1);
1049 sc->last_led_err[1] = 0;
1050 }
1051
1052 /*
1053 * Yellow Alarm is nasty evil stuff, looks at data patterns
1054 * inside the channel and confuses it with HDLC framing
1055 * ignore all yellow alarms.
1056 *
1057 * Do listen to MultiFrame Yellow alarm which while implemented
1058 * different ways isn't in the channel and hence somewhat
1059 * more reliable
1060 */
1061
1062 if (link_status & T1F_RMYEL) {
1063 ret = 0;
1064 if(sc->last_led_err[0] != 1){
1065 printk(KERN_WARNING "%s: Receive Yellow AIS Alarm\n", sc->name);
1066 }
1067 lmc_led_on(sc, LMC_DS3_LED0);
1068 sc->last_led_err[0] = 1;
1069 }
1070 else {
1071 if(sc->last_led_err[0] != 0){
1072 printk(KERN_WARNING "%s: End of Yellow AIS Alarm\n", sc->name);
1073 }
1074 lmc_led_off(sc, LMC_DS3_LED0);
1075 sc->last_led_err[0] = 0;
1076 }
1077
1078 /*
1079 * Loss of signal and los of frame
1080 * Use the green bit to identify which one lit the led
1081 */
1082 if(link_status & T1F_RLOF){
1083 ret = 0;
1084 if(sc->last_led_err[3] != 1){
1085 printk(KERN_WARNING "%s: Local Red Alarm: Loss of Framing\n", sc->name);
1086 }
1087 lmc_led_on(sc, LMC_DS3_LED3);
1088 sc->last_led_err[3] = 1;
1089
1090 }
1091 else {
1092 if(sc->last_led_err[3] != 0){
1093 printk(KERN_WARNING "%s: End Red Alarm (LOF)\n", sc->name);
1094 }
1095 if( ! (link_status & T1F_RLOS))
1096 lmc_led_off(sc, LMC_DS3_LED3);
1097 sc->last_led_err[3] = 0;
1098 }
1099
1100 if(link_status & T1F_RLOS){
1101 ret = 0;
1102 if(sc->last_led_err[2] != 1){
1103 printk(KERN_WARNING "%s: Local Red Alarm: Loss of Signal\n", sc->name);
1104 }
1105 lmc_led_on(sc, LMC_DS3_LED3);
1106 sc->last_led_err[2] = 1;
1107
1108 }
1109 else {
1110 if(sc->last_led_err[2] != 0){
1111 printk(KERN_WARNING "%s: End Red Alarm (LOS)\n", sc->name);
1112 }
1113 if( ! (link_status & T1F_RLOF))
1114 lmc_led_off(sc, LMC_DS3_LED3);
1115 sc->last_led_err[2] = 0;
1116 }
1117
1118 sc->lmc_xinfo.t1_alarm1_status = link_status;
1119
1120 lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM2_STATUS);
1121 sc->lmc_xinfo.t1_alarm2_status = lmc_mii_readreg (sc, 0, 18);
1122
1123
1124 lmc_trace(sc->lmc_device, "lmc_t1_get_link_status out");
1125
1126 return ret;
1127 }
1128
1129 /*
1130 * 1 == T1 Circuit Type , 0 == E1 Circuit Type
1131 */
1132 static void
lmc_t1_set_circuit_type(lmc_softc_t * const sc,int ie)1133 lmc_t1_set_circuit_type (lmc_softc_t * const sc, int ie)
1134 {
1135 if (ie == LMC_CTL_CIRCUIT_TYPE_T1) {
1136 sc->lmc_miireg16 |= LMC_MII16_T1_Z;
1137 sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1;
1138 printk(KERN_INFO "%s: In T1 Mode\n", sc->name);
1139 }
1140 else {
1141 sc->lmc_miireg16 &= ~LMC_MII16_T1_Z;
1142 sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_E1;
1143 printk(KERN_INFO "%s: In E1 Mode\n", sc->name);
1144 }
1145
1146 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
1147
1148 }
1149
1150 /*
1151 * 0 == 16bit, 1 == 32bit */
1152 static void
lmc_t1_set_crc_length(lmc_softc_t * const sc,int state)1153 lmc_t1_set_crc_length (lmc_softc_t * const sc, int state)
1154 {
1155 if (state == LMC_CTL_CRC_LENGTH_32)
1156 {
1157 /* 32 bit */
1158 sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
1159 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
1160 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
1161
1162 }
1163 else
1164 {
1165 /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
1166 sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
1167 sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
1168
1169 }
1170
1171 lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
1172 }
1173
1174 /*
1175 * 1 == internal, 0 == external
1176 */
1177 static void
lmc_t1_set_clock(lmc_softc_t * const sc,int ie)1178 lmc_t1_set_clock (lmc_softc_t * const sc, int ie)
1179 {
1180 int old;
1181 old = ie;
1182 if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
1183 {
1184 sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
1185 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
1186 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
1187 if(old != ie)
1188 printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
1189 }
1190 else
1191 {
1192 sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
1193 LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
1194 sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
1195 if(old != ie)
1196 printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
1197 }
1198 }
1199
1200 static void
lmc_t1_watchdog(lmc_softc_t * const sc)1201 lmc_t1_watchdog (lmc_softc_t * const sc)
1202 {
1203 }
1204
1205 static void
lmc_set_protocol(lmc_softc_t * const sc,lmc_ctl_t * ctl)1206 lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl)
1207 {
1208 if (!ctl)
1209 sc->ictl.keepalive_onoff = LMC_CTL_ON;
1210 }
1211
