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1da177e4 LT |
1 | /* $Id: lmc_media.c,v 1.13 2000/04/11 05:25:26 asj Exp $ */ |
2 | ||
1da177e4 LT |
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> | |
1da177e4 | 9 | #include <linux/interrupt.h> |
1da177e4 LT |
10 | #include <linux/in.h> |
11 | #include <linux/if_arp.h> | |
12 | #include <linux/netdevice.h> | |
13 | #include <linux/etherdevice.h> | |
14 | #include <linux/skbuff.h> | |
15 | #include <linux/inet.h> | |
16 | #include <linux/bitops.h> | |
17 | ||
1da177e4 LT |
18 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
19 | #include <asm/io.h> | |
20 | #include <asm/dma.h> | |
21 | ||
22 | #include <asm/uaccess.h> | |
23 | ||
24 | #include "lmc.h" | |
25 | #include "lmc_var.h" | |
26 | #include "lmc_ioctl.h" | |
27 | #include "lmc_debug.h" | |
28 | ||
29 | #define CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE 1 | |
30 | ||
31 | /* | |
32 | * Copyright (c) 1997-2000 LAN Media Corporation (LMC) | |
33 | * All rights reserved. www.lanmedia.com | |
34 | * | |
35 | * This code is written by: | |
36 | * Andrew Stanley-Jones (asj@cban.com) | |
37 | * Rob Braun (bbraun@vix.com), | |
38 | * Michael Graff (explorer@vix.com) and | |
39 | * Matt Thomas (matt@3am-software.com). | |
40 | * | |
41 | * This software may be used and distributed according to the terms | |
42 | * of the GNU General Public License version 2, incorporated herein by reference. | |
43 | */ | |
44 | ||
1da177e4 LT |
45 | /* |
46 | * protocol independent method. | |
47 | */ | |
48 | static void lmc_set_protocol (lmc_softc_t * const, lmc_ctl_t *); | |
49 | ||
50 | /* | |
51 | * media independent methods to check on media status, link, light LEDs, | |
52 | * etc. | |
53 | */ | |
54 | static void lmc_ds3_init (lmc_softc_t * const); | |
55 | static void lmc_ds3_default (lmc_softc_t * const); | |
56 | static void lmc_ds3_set_status (lmc_softc_t * const, lmc_ctl_t *); | |
57 | static void lmc_ds3_set_100ft (lmc_softc_t * const, int); | |
58 | static int lmc_ds3_get_link_status (lmc_softc_t * const); | |
59 | static void lmc_ds3_set_crc_length (lmc_softc_t * const, int); | |
60 | static void lmc_ds3_set_scram (lmc_softc_t * const, int); | |
61 | static void lmc_ds3_watchdog (lmc_softc_t * const); | |
62 | ||
63 | static void lmc_hssi_init (lmc_softc_t * const); | |
64 | static void lmc_hssi_default (lmc_softc_t * const); | |
65 | static void lmc_hssi_set_status (lmc_softc_t * const, lmc_ctl_t *); | |
66 | static void lmc_hssi_set_clock (lmc_softc_t * const, int); | |
67 | static int lmc_hssi_get_link_status (lmc_softc_t * const); | |
68 | static void lmc_hssi_set_link_status (lmc_softc_t * const, int); | |
69 | static void lmc_hssi_set_crc_length (lmc_softc_t * const, int); | |
70 | static void lmc_hssi_watchdog (lmc_softc_t * const); | |
71 | ||
72 | static void lmc_ssi_init (lmc_softc_t * const); | |
73 | static void lmc_ssi_default (lmc_softc_t * const); | |
74 | static void lmc_ssi_set_status (lmc_softc_t * const, lmc_ctl_t *); | |
75 | static void lmc_ssi_set_clock (lmc_softc_t * const, int); | |
76 | static void lmc_ssi_set_speed (lmc_softc_t * const, lmc_ctl_t *); | |
77 | static int lmc_ssi_get_link_status (lmc_softc_t * const); | |
78 | static void lmc_ssi_set_link_status (lmc_softc_t * const, int); | |
79 | static void lmc_ssi_set_crc_length (lmc_softc_t * const, int); | |
80 | static void lmc_ssi_watchdog (lmc_softc_t * const); | |
81 | ||
82 | static void lmc_t1_init (lmc_softc_t * const); | |
83 | static void lmc_t1_default (lmc_softc_t * const); | |
84 | static void lmc_t1_set_status (lmc_softc_t * const, lmc_ctl_t *); | |
85 | static int lmc_t1_get_link_status (lmc_softc_t * const); | |
86 | static void lmc_t1_set_circuit_type (lmc_softc_t * const, int); | |
87 | static void lmc_t1_set_crc_length (lmc_softc_t * const, int); | |
88 | static void lmc_t1_set_clock (lmc_softc_t * const, int); | |
89 | static void lmc_t1_watchdog (lmc_softc_t * const); | |
90 | ||
91 | static void lmc_dummy_set_1 (lmc_softc_t * const, int); | |
92 | static void lmc_dummy_set2_1 (lmc_softc_t * const, lmc_ctl_t *); | |
93 | ||
94 | static inline void write_av9110_bit (lmc_softc_t *, int); | |
867240f7 | 95 | static void write_av9110(lmc_softc_t *, u32, u32, u32, u32, u32); |
1da177e4 LT |
96 | |
97 | lmc_media_t lmc_ds3_media = { | |
98 | lmc_ds3_init, /* special media init stuff */ | |
99 | lmc_ds3_default, /* reset to default state */ | |
100 | lmc_ds3_set_status, /* reset status to state provided */ | |
101 | lmc_dummy_set_1, /* set clock source */ | |
102 | lmc_dummy_set2_1, /* set line speed */ | |
103 | lmc_ds3_set_100ft, /* set cable length */ | |
104 | lmc_ds3_set_scram, /* set scrambler */ | |
105 | lmc_ds3_get_link_status, /* get link status */ | |
106 | lmc_dummy_set_1, /* set link status */ | |
107 | lmc_ds3_set_crc_length, /* set CRC length */ | |
108 | lmc_dummy_set_1, /* set T1 or E1 circuit type */ | |
109 | lmc_ds3_watchdog | |
110 | }; | |
111 | ||
112 | lmc_media_t lmc_hssi_media = { | |
113 | lmc_hssi_init, /* special media init stuff */ | |
114 | lmc_hssi_default, /* reset to default state */ | |
115 | lmc_hssi_set_status, /* reset status to state provided */ | |
116 | lmc_hssi_set_clock, /* set clock source */ | |
117 | lmc_dummy_set2_1, /* set line speed */ | |
118 | lmc_dummy_set_1, /* set cable length */ | |
119 | lmc_dummy_set_1, /* set scrambler */ | |
120 | lmc_hssi_get_link_status, /* get link status */ | |
121 | lmc_hssi_set_link_status, /* set link status */ | |
122 | lmc_hssi_set_crc_length, /* set CRC length */ | |
123 | lmc_dummy_set_1, /* set T1 or E1 circuit type */ | |
124 | lmc_hssi_watchdog | |
125 | }; | |
126 | ||
127 | lmc_media_t lmc_ssi_media = { lmc_ssi_init, /* special media init stuff */ | |
128 | lmc_ssi_default, /* reset to default state */ | |
129 | lmc_ssi_set_status, /* reset status to state provided */ | |
130 | lmc_ssi_set_clock, /* set clock source */ | |
131 | lmc_ssi_set_speed, /* set line speed */ | |
132 | lmc_dummy_set_1, /* set cable length */ | |
133 | lmc_dummy_set_1, /* set scrambler */ | |
134 | lmc_ssi_get_link_status, /* get link status */ | |
135 | lmc_ssi_set_link_status, /* set link status */ | |
136 | lmc_ssi_set_crc_length, /* set CRC length */ | |
137 | lmc_dummy_set_1, /* set T1 or E1 circuit type */ | |
138 | lmc_ssi_watchdog | |
139 | }; | |
140 | ||
141 | lmc_media_t lmc_t1_media = { | |
142 | lmc_t1_init, /* special media init stuff */ | |
143 | lmc_t1_default, /* reset to default state */ | |
144 | lmc_t1_set_status, /* reset status to state provided */ | |
145 | lmc_t1_set_clock, /* set clock source */ | |
146 | lmc_dummy_set2_1, /* set line speed */ | |
147 | lmc_dummy_set_1, /* set cable length */ | |
148 | lmc_dummy_set_1, /* set scrambler */ | |
149 | lmc_t1_get_link_status, /* get link status */ | |
150 | lmc_dummy_set_1, /* set link status */ | |
151 | lmc_t1_set_crc_length, /* set CRC length */ | |
152 | lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */ | |
153 | lmc_t1_watchdog | |
154 | }; | |
155 | ||
156 | static void | |
157 | lmc_dummy_set_1 (lmc_softc_t * const sc, int a) | |
158 | { | |
159 | } | |
160 | ||
161 | static void | |
162 | lmc_dummy_set2_1 (lmc_softc_t * const sc, lmc_ctl_t * a) | |
163 | { | |
164 | } | |
165 | ||
166 | /* | |
167 | * HSSI methods | |
168 | */ | |
169 | ||
170 | static void | |
171 | lmc_hssi_init (lmc_softc_t * const sc) | |
172 | { | |
173 | sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200; | |
174 | ||
175 | lmc_gpio_mkoutput (sc, LMC_GEP_HSSI_CLOCK); | |
176 | } | |
177 | ||
178 | static void | |
179 | lmc_hssi_default (lmc_softc_t * const sc) | |
180 | { | |
181 | sc->lmc_miireg16 = LMC_MII16_LED_ALL; | |
182 | ||
183 | sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); | |
184 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); | |
185 | sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); | |
186 | } | |
187 | ||
188 | /* | |
189 | * Given a user provided state, set ourselves up to match it. This will | |
190 | * always reset the card if needed. | |
191 | */ | |
192 | static void | |
193 | lmc_hssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
194 | { | |
195 | if (ctl == NULL) | |
196 | { | |
197 | sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source); | |
198 | lmc_set_protocol (sc, NULL); | |
199 | ||
200 | return; | |
201 | } | |
202 | ||
203 | /* | |
204 | * check for change in clock source | |
205 | */ | |
206 | if (ctl->clock_source && !sc->ictl.clock_source) | |
207 | { | |
208 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT); | |
209 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT; | |
210 | } | |
211 | else if (!ctl->clock_source && sc->ictl.clock_source) | |
212 | { | |
213 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; | |
214 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); | |
215 | } | |
216 | ||
217 | lmc_set_protocol (sc, ctl); | |
218 | } | |
219 | ||
220 | /* | |
221 | * 1 == internal, 0 == external | |
222 | */ | |
223 | static void | |
224 | lmc_hssi_set_clock (lmc_softc_t * const sc, int ie) | |
225 | { | |
226 | int old; | |
227 | old = sc->ictl.clock_source; | |
228 | if (ie == LMC_CTL_CLOCK_SOURCE_EXT) | |
229 | { | |
230 | sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK; | |
231 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
232 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; | |
233 | if(old != ie) | |
234 | printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); | |
235 | } | |
236 | else | |
237 | { | |
238 | sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK); | |
239 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
240 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; | |
241 | if(old != ie) | |
242 | printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); | |
243 | } | |
244 | } | |
245 | ||
246 | /* | |
247 | * return hardware link status. | |
248 | * 0 == link is down, 1 == link is up. | |
249 | */ | |
250 | static int | |
251 | lmc_hssi_get_link_status (lmc_softc_t * const sc) | |
252 | { | |
253 | /* | |
254 | * We're using the same code as SSI since | |
255 | * they're practically the same | |
256 | */ | |
257 | return lmc_ssi_get_link_status(sc); | |
258 | } | |
259 | ||
260 | static void | |
261 | lmc_hssi_set_link_status (lmc_softc_t * const sc, int state) | |
262 | { | |
263 | if (state == LMC_LINK_UP) | |
264 | sc->lmc_miireg16 |= LMC_MII16_HSSI_TA; | |
265 | else | |
266 | sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA; | |
267 | ||
268 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
269 | } | |
270 | ||
271 | /* | |
272 | * 0 == 16bit, 1 == 32bit | |
273 | */ | |
274 | static void | |
275 | lmc_hssi_set_crc_length (lmc_softc_t * const sc, int state) | |
276 | { | |
277 | if (state == LMC_CTL_CRC_LENGTH_32) | |
278 | { | |
279 | /* 32 bit */ | |
280 | sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC; | |
281 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; | |
282 | } | |
283 | else | |
284 | { | |
285 | /* 16 bit */ | |
286 | sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC; | |
287 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; | |
288 | } | |
289 | ||
290 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
291 | } | |
292 | ||
293 | static void | |
294 | lmc_hssi_watchdog (lmc_softc_t * const sc) | |
295 | { | |
296 | /* HSSI is blank */ | |
297 | } | |
298 | ||
299 | /* | |
300 | * DS3 methods | |
301 | */ | |
302 | ||
303 | /* | |
304 | * Set cable length | |
305 | */ | |
306 | static void | |
307 | lmc_ds3_set_100ft (lmc_softc_t * const sc, int ie) | |
308 | { | |
309 | if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT) | |
310 | { | |
311 | sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO; | |
312 | sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT; | |
313 | } | |
314 | else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT) | |
315 | { | |
316 | sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO; | |
317 | sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT; | |
318 | } | |
319 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
320 | } | |
321 | ||
322 | static void | |
323 | lmc_ds3_default (lmc_softc_t * const sc) | |
324 | { | |
325 | sc->lmc_miireg16 = LMC_MII16_LED_ALL; | |
326 | ||
327 | sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); | |
328 | sc->lmc_media->set_cable_length (sc, LMC_CTL_CABLE_LENGTH_LT_100FT); | |
329 | sc->lmc_media->set_scrambler (sc, LMC_CTL_OFF); | |
330 | sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); | |
331 | } | |
332 | ||
333 | /* | |
334 | * Given a user provided state, set ourselves up to match it. This will | |
335 | * always reset the card if needed. | |
336 | */ | |
337 | static void | |
338 | lmc_ds3_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
339 | { | |
340 | if (ctl == NULL) | |
341 | { | |
342 | sc->lmc_media->set_cable_length (sc, sc->ictl.cable_length); | |
343 | sc->lmc_media->set_scrambler (sc, sc->ictl.scrambler_onoff); | |
344 | lmc_set_protocol (sc, NULL); | |
345 | ||
346 | return; | |
347 | } | |
348 | ||
349 | /* | |
350 | * check for change in cable length setting | |
351 | */ | |
352 | if (ctl->cable_length && !sc->ictl.cable_length) | |
353 | lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_GT_100FT); | |
354 | else if (!ctl->cable_length && sc->ictl.cable_length) | |
355 | lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_LT_100FT); | |
356 | ||
357 | /* | |
358 | * Check for change in scrambler setting (requires reset) | |
359 | */ | |
360 | if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff) | |
361 | lmc_ds3_set_scram (sc, LMC_CTL_ON); | |
362 | else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff) | |
363 | lmc_ds3_set_scram (sc, LMC_CTL_OFF); | |
364 | ||
365 | lmc_set_protocol (sc, ctl); | |
366 | } | |
367 | ||
368 | static void | |
369 | lmc_ds3_init (lmc_softc_t * const sc) | |
370 | { | |
371 | int i; | |
372 | ||
373 | sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245; | |
374 | ||
375 | /* writes zeros everywhere */ | |
376 | for (i = 0; i < 21; i++) | |
377 | { | |
378 | lmc_mii_writereg (sc, 0, 17, i); | |
379 | lmc_mii_writereg (sc, 0, 18, 0); | |
380 | } | |
381 | ||
382 | /* set some essential bits */ | |
383 | lmc_mii_writereg (sc, 0, 17, 1); | |
384 | lmc_mii_writereg (sc, 0, 18, 0x25); /* ser, xtx */ | |
385 | ||
386 | lmc_mii_writereg (sc, 0, 17, 5); | |
387 | lmc_mii_writereg (sc, 0, 18, 0x80); /* emode */ | |
388 | ||
389 | lmc_mii_writereg (sc, 0, 17, 14); | |
390 | lmc_mii_writereg (sc, 0, 18, 0x30); /* rcgen, tcgen */ | |
391 | ||
392 | /* clear counters and latched bits */ | |
393 | for (i = 0; i < 21; i++) | |
394 | { | |
395 | lmc_mii_writereg (sc, 0, 17, i); | |
396 | lmc_mii_readreg (sc, 0, 18); | |
397 | } | |
398 | } | |
399 | ||
400 | /* | |
401 | * 1 == DS3 payload scrambled, 0 == not scrambled | |
402 | */ | |
403 | static void | |
404 | lmc_ds3_set_scram (lmc_softc_t * const sc, int ie) | |
405 | { | |
406 | if (ie == LMC_CTL_ON) | |
407 | { | |
408 | sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM; | |
409 | sc->ictl.scrambler_onoff = LMC_CTL_ON; | |
410 | } | |
411 | else | |
412 | { | |
413 | sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM; | |
414 | sc->ictl.scrambler_onoff = LMC_CTL_OFF; | |
415 | } | |
416 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
417 | } | |
418 | ||
419 | /* | |
420 | * return hardware link status. | |
421 | * 0 == link is down, 1 == link is up. | |
422 | */ | |
423 | static int | |
424 | lmc_ds3_get_link_status (lmc_softc_t * const sc) | |
425 | { | |
64bef763 | 426 | u16 link_status, link_status_11; |
1da177e4 LT |
427 | int ret = 1; |
428 | ||
429 | lmc_mii_writereg (sc, 0, 17, 7); | |
430 | link_status = lmc_mii_readreg (sc, 0, 18); | |
431 | ||
432 | /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions | |
433 | * led0 yellow = far-end adapter is in Red alarm condition | |
434 | * led1 blue = received an Alarm Indication signal | |
435 | * (upstream failure) | |
436 | * led2 Green = power to adapter, Gate Array loaded & driver | |
437 | * attached | |
438 | * led3 red = Loss of Signal (LOS) or out of frame (OOF) | |
439 | * conditions detected on T3 receive signal | |
440 | */ | |
441 | ||
442 | lmc_led_on(sc, LMC_DS3_LED2); | |
443 | ||
444 | if ((link_status & LMC_FRAMER_REG0_DLOS) || | |
445 | (link_status & LMC_FRAMER_REG0_OOFS)){ | |
446 | ret = 0; | |
447 | if(sc->last_led_err[3] != 1){ | |
64bef763 | 448 | u16 r1; |
1da177e4 LT |
449 | lmc_mii_writereg (sc, 0, 17, 01); /* Turn on Xbit error as our cisco does */ |
450 | r1 = lmc_mii_readreg (sc, 0, 18); | |
451 | r1 &= 0xfe; | |
452 | lmc_mii_writereg(sc, 0, 18, r1); | |
453 | printk(KERN_WARNING "%s: Red Alarm - Loss of Signal or Loss of Framing\n", sc->name); | |
454 | } | |
455 | lmc_led_on(sc, LMC_DS3_LED3); /* turn on red LED */ | |
456 | sc->last_led_err[3] = 1; | |
457 | } | |
458 | else { | |
459 | lmc_led_off(sc, LMC_DS3_LED3); /* turn on red LED */ | |
460 | if(sc->last_led_err[3] == 1){ | |
64bef763 | 461 | u16 r1; |
1da177e4 LT |
462 | lmc_mii_writereg (sc, 0, 17, 01); /* Turn off Xbit error */ |
463 | r1 = lmc_mii_readreg (sc, 0, 18); | |
464 | r1 |= 0x01; | |
465 | lmc_mii_writereg(sc, 0, 18, r1); | |
466 | } | |
467 | sc->last_led_err[3] = 0; | |
468 | } | |
469 | ||
470 | lmc_mii_writereg(sc, 0, 17, 0x10); | |
471 | link_status_11 = lmc_mii_readreg(sc, 0, 18); | |
472 | if((link_status & LMC_FRAMER_REG0_AIS) || | |
473 | (link_status_11 & LMC_FRAMER_REG10_XBIT)) { | |
474 | ret = 0; | |
475 | if(sc->last_led_err[0] != 1){ | |
476 | printk(KERN_WARNING "%s: AIS Alarm or XBit Error\n", sc->name); | |
477 | printk(KERN_WARNING "%s: Remote end has loss of signal or framing\n", sc->name); | |
478 | } | |
479 | lmc_led_on(sc, LMC_DS3_LED0); | |
480 | sc->last_led_err[0] = 1; | |
481 | } | |
482 | else { | |
483 | lmc_led_off(sc, LMC_DS3_LED0); | |
484 | sc->last_led_err[0] = 0; | |
485 | } | |
486 | ||
487 | lmc_mii_writereg (sc, 0, 17, 9); | |
488 | link_status = lmc_mii_readreg (sc, 0, 18); | |
489 | ||
490 | if(link_status & LMC_FRAMER_REG9_RBLUE){ | |
491 | ret = 0; | |
492 | if(sc->last_led_err[1] != 1){ | |
493 | printk(KERN_WARNING "%s: Blue Alarm - Receiving all 1's\n", sc->name); | |
494 | } | |
495 | lmc_led_on(sc, LMC_DS3_LED1); | |
496 | sc->last_led_err[1] = 1; | |
497 | } | |
498 | else { | |
499 | lmc_led_off(sc, LMC_DS3_LED1); | |
500 | sc->last_led_err[1] = 0; | |
501 | } | |
502 | ||
503 | return ret; | |
504 | } | |
505 | ||
506 | /* | |
507 | * 0 == 16bit, 1 == 32bit | |
508 | */ | |
509 | static void | |
510 | lmc_ds3_set_crc_length (lmc_softc_t * const sc, int state) | |
511 | { | |
512 | if (state == LMC_CTL_CRC_LENGTH_32) | |
513 | { | |
514 | /* 32 bit */ | |
515 | sc->lmc_miireg16 |= LMC_MII16_DS3_CRC; | |
516 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; | |
517 | } | |
518 | else | |
519 | { | |
520 | /* 16 bit */ | |
521 | sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC; | |
522 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; | |
523 | } | |
524 | ||
525 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
526 | } | |
527 | ||
528 | static void | |
529 | lmc_ds3_watchdog (lmc_softc_t * const sc) | |
530 | { | |
531 | ||
532 | } | |
533 | ||
534 | ||
535 | /* | |
536 | * SSI methods | |
537 | */ | |
538 | ||
64bef763 | 539 | static void lmc_ssi_init(lmc_softc_t * const sc) |
1da177e4 | 540 | { |
64bef763 KH |
541 | u16 mii17; |
542 | int cable; | |
1da177e4 | 543 | |
64bef763 | 544 | sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000; |
1da177e4 | 545 | |
64bef763 | 546 | mii17 = lmc_mii_readreg(sc, 0, 17); |
1da177e4 | 547 | |
64bef763 KH |
548 | cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT; |
549 | sc->ictl.cable_type = cable; | |
1da177e4 | 550 | |
64bef763 | 551 | lmc_gpio_mkoutput(sc, LMC_GEP_SSI_TXCLOCK); |
1da177e4 LT |
552 | } |
553 | ||
554 | static void | |
555 | lmc_ssi_default (lmc_softc_t * const sc) | |
556 | { | |
557 | sc->lmc_miireg16 = LMC_MII16_LED_ALL; | |
558 | ||
559 | /* | |
560 | * make TXCLOCK always be an output | |
561 | */ | |
562 | lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK); | |
563 | ||
564 | sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); | |
565 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); | |
566 | sc->lmc_media->set_speed (sc, NULL); | |
567 | sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); | |
568 | } | |
569 | ||
570 | /* | |
571 | * Given a user provided state, set ourselves up to match it. This will | |
572 | * always reset the card if needed. | |
573 | */ | |
574 | static void | |
575 | lmc_ssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
576 | { | |
577 | if (ctl == NULL) | |
578 | { | |
579 | sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source); | |
580 | sc->lmc_media->set_speed (sc, &sc->ictl); | |
581 | lmc_set_protocol (sc, NULL); | |
582 | ||
583 | return; | |
584 | } | |
585 | ||
586 | /* | |
587 | * check for change in clock source | |
588 | */ | |
589 | if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT | |
590 | && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT) | |
591 | { | |
592 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT); | |
593 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT; | |
594 | } | |
595 | else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT | |
596 | && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT) | |
597 | { | |
598 | sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); | |
599 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; | |
600 | } | |
601 | ||
602 | if (ctl->clock_rate != sc->ictl.clock_rate) | |
603 | sc->lmc_media->set_speed (sc, ctl); | |
604 | ||
605 | lmc_set_protocol (sc, ctl); | |
606 | } | |
607 | ||
608 | /* | |
609 | * 1 == internal, 0 == external | |
610 | */ | |
611 | static void | |
612 | lmc_ssi_set_clock (lmc_softc_t * const sc, int ie) | |
613 | { | |
614 | int old; | |
615 | old = ie; | |
616 | if (ie == LMC_CTL_CLOCK_SOURCE_EXT) | |
617 | { | |
618 | sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK); | |
619 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
620 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; | |
621 | if(ie != old) | |
622 | printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); | |
623 | } | |
624 | else | |
625 | { | |
626 | sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK; | |
627 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
628 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; | |
629 | if(ie != old) | |
630 | printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); | |
631 | } | |
632 | } | |
633 | ||
634 | static void | |
635 | lmc_ssi_set_speed (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
636 | { | |
637 | lmc_ctl_t *ictl = &sc->ictl; | |
638 | lmc_av9110_t *av; | |
639 | ||
640 | /* original settings for clock rate of: | |
641 | * 100 Khz (8,25,0,0,2) were incorrect | |
642 | * they should have been 80,125,1,3,3 | |
643 | * There are 17 param combinations to produce this freq. | |
644 | * For 1.5 Mhz use 120,100,1,1,2 (226 param. combinations) | |
645 | */ | |
646 | if (ctl == NULL) | |
647 | { | |
648 | av = &ictl->cardspec.ssi; | |
649 | ictl->clock_rate = 1500000; | |
650 | av->f = ictl->clock_rate; | |
651 | av->n = 120; | |
652 | av->m = 100; | |
653 | av->v = 1; | |
654 | av->x = 1; | |
655 | av->r = 2; | |
656 | ||
657 | write_av9110 (sc, av->n, av->m, av->v, av->x, av->r); | |
658 | return; | |
659 | } | |
660 | ||
661 | av = &ctl->cardspec.ssi; | |
662 | ||
663 | if (av->f == 0) | |
664 | return; | |
665 | ||
666 | ictl->clock_rate = av->f; /* really, this is the rate we are */ | |
667 | ictl->cardspec.ssi = *av; | |
668 | ||
669 | write_av9110 (sc, av->n, av->m, av->v, av->x, av->r); | |
670 | } | |
671 | ||
672 | /* | |
673 | * return hardware link status. | |
674 | * 0 == link is down, 1 == link is up. | |
675 | */ | |
676 | static int | |
677 | lmc_ssi_get_link_status (lmc_softc_t * const sc) | |
678 | { | |
64bef763 | 679 | u16 link_status; |
867240f7 | 680 | u32 ticks; |
1da177e4 LT |
681 | int ret = 1; |
682 | int hw_hdsk = 1; | |
64bef763 | 683 | |
1da177e4 LT |
684 | /* |
685 | * missing CTS? Hmm. If we require CTS on, we may never get the | |
686 | * link to come up, so omit it in this test. | |
687 | * | |
688 | * Also, it seems that with a loopback cable, DCD isn't asserted, | |
689 | * so just check for things like this: | |
690 | * DSR _must_ be asserted. | |
691 | * One of DCD or CTS must be asserted. | |
692 | */ | |
693 | ||
694 | /* LMC 1000 (SSI) LED definitions | |
695 | * led0 Green = power to adapter, Gate Array loaded & | |
696 | * driver attached | |
697 | * led1 Green = DSR and DTR and RTS and CTS are set | |
698 | * led2 Green = Cable detected | |
699 | * led3 red = No timing is available from the | |
700 | * cable or the on-board frequency | |
701 | * generator. | |
702 | */ | |
703 | ||
704 | link_status = lmc_mii_readreg (sc, 0, 16); | |
705 | ||
706 | /* Is the transmit clock still available */ | |
707 | ticks = LMC_CSR_READ (sc, csr_gp_timer); | |
708 | ticks = 0x0000ffff - (ticks & 0x0000ffff); | |
709 | ||
710 | lmc_led_on (sc, LMC_MII16_LED0); | |
711 | ||
712 | /* ====== transmit clock determination ===== */ | |
713 | if (sc->lmc_timing == LMC_CTL_CLOCK_SOURCE_INT) { | |
714 | lmc_led_off(sc, LMC_MII16_LED3); | |
715 | } | |
716 | else if (ticks == 0 ) { /* no clock found ? */ | |
717 | ret = 0; | |
64bef763 KH |
718 | if (sc->last_led_err[3] != 1) { |
719 | sc->extra_stats.tx_lossOfClockCnt++; | |
720 | printk(KERN_WARNING "%s: Lost Clock, Link Down\n", sc->name); | |
1da177e4 LT |
721 | } |
722 | sc->last_led_err[3] = 1; | |
723 | lmc_led_on (sc, LMC_MII16_LED3); /* turn ON red LED */ | |
724 | } | |
725 | else { | |
726 | if(sc->last_led_err[3] == 1) | |
727 | printk(KERN_WARNING "%s: Clock Returned\n", sc->name); | |
728 | sc->last_led_err[3] = 0; | |
729 | lmc_led_off (sc, LMC_MII16_LED3); /* turn OFF red LED */ | |
730 | } | |
731 | ||
732 | if ((link_status & LMC_MII16_SSI_DSR) == 0) { /* Also HSSI CA */ | |
733 | ret = 0; | |
734 | hw_hdsk = 0; | |
735 | } | |
736 | ||
737 | #ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE | |
738 | if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0){ | |
739 | ret = 0; | |
740 | hw_hdsk = 0; | |
741 | } | |
742 | #endif | |
743 | ||
744 | if(hw_hdsk == 0){ | |
745 | if(sc->last_led_err[1] != 1) | |
746 | printk(KERN_WARNING "%s: DSR not asserted\n", sc->name); | |
747 | sc->last_led_err[1] = 1; | |
748 | lmc_led_off(sc, LMC_MII16_LED1); | |
749 | } | |
750 | else { | |
751 | if(sc->last_led_err[1] != 0) | |
752 | printk(KERN_WARNING "%s: DSR now asserted\n", sc->name); | |
753 | sc->last_led_err[1] = 0; | |
754 | lmc_led_on(sc, LMC_MII16_LED1); | |
755 | } | |
756 | ||
757 | if(ret == 1) { | |
758 | lmc_led_on(sc, LMC_MII16_LED2); /* Over all good status? */ | |
759 | } | |
760 | ||
761 | return ret; | |
762 | } | |
763 | ||
764 | static void | |
765 | lmc_ssi_set_link_status (lmc_softc_t * const sc, int state) | |
766 | { | |
767 | if (state == LMC_LINK_UP) | |
768 | { | |
769 | sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS); | |
770 | printk (LMC_PRINTF_FMT ": asserting DTR and RTS\n", LMC_PRINTF_ARGS); | |
771 | } | |
772 | else | |
773 | { | |
774 | sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS); | |
775 | printk (LMC_PRINTF_FMT ": deasserting DTR and RTS\n", LMC_PRINTF_ARGS); | |
776 | } | |
777 | ||
778 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
779 | ||
780 | } | |
781 | ||
782 | /* | |
783 | * 0 == 16bit, 1 == 32bit | |
784 | */ | |
785 | static void | |
786 | lmc_ssi_set_crc_length (lmc_softc_t * const sc, int state) | |
787 | { | |
788 | if (state == LMC_CTL_CRC_LENGTH_32) | |
789 | { | |
790 | /* 32 bit */ | |
791 | sc->lmc_miireg16 |= LMC_MII16_SSI_CRC; | |
792 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; | |
793 | sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4; | |
794 | ||
795 | } | |
796 | else | |
797 | { | |
798 | /* 16 bit */ | |
799 | sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC; | |
800 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; | |
801 | sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2; | |
802 | } | |
803 | ||
804 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
805 | } | |
806 | ||
807 | /* | |
808 | * These are bits to program the ssi frequency generator | |
809 | */ | |
810 | static inline void | |
811 | write_av9110_bit (lmc_softc_t * sc, int c) | |
812 | { | |
813 | /* | |
814 | * set the data bit as we need it. | |
815 | */ | |
816 | sc->lmc_gpio &= ~(LMC_GEP_CLK); | |
817 | if (c & 0x01) | |
818 | sc->lmc_gpio |= LMC_GEP_DATA; | |
819 | else | |
820 | sc->lmc_gpio &= ~(LMC_GEP_DATA); | |
821 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
822 | ||
823 | /* | |
824 | * set the clock to high | |
825 | */ | |
826 | sc->lmc_gpio |= LMC_GEP_CLK; | |
827 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
828 | ||
829 | /* | |
830 | * set the clock to low again. | |
831 | */ | |
832 | sc->lmc_gpio &= ~(LMC_GEP_CLK); | |
833 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
834 | } | |
835 | ||
867240f7 | 836 | static void write_av9110(lmc_softc_t *sc, u32 n, u32 m, u32 v, u32 x, u32 r) |
1da177e4 LT |
837 | { |
838 | int i; | |
839 | ||
840 | #if 0 | |
841 | printk (LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n", | |
842 | LMC_PRINTF_ARGS, sc->ictl.clock_rate, n, m, v, x, r); | |
843 | #endif | |
844 | ||
845 | sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR; | |
846 | sc->lmc_gpio &= ~(LMC_GEP_DATA | LMC_GEP_CLK); | |
847 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
848 | ||
849 | /* | |
850 | * Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK | |
851 | * as outputs. | |
852 | */ | |
853 | lmc_gpio_mkoutput (sc, (LMC_GEP_DATA | LMC_GEP_CLK | |
854 | | LMC_GEP_SSI_GENERATOR)); | |
855 | ||
856 | sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR); | |
857 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
858 | ||
859 | /* | |
860 | * a shifting we will go... | |
861 | */ | |
862 | for (i = 0; i < 7; i++) | |
863 | write_av9110_bit (sc, n >> i); | |
864 | for (i = 0; i < 7; i++) | |
865 | write_av9110_bit (sc, m >> i); | |
866 | for (i = 0; i < 1; i++) | |
867 | write_av9110_bit (sc, v >> i); | |
868 | for (i = 0; i < 2; i++) | |
869 | write_av9110_bit (sc, x >> i); | |
870 | for (i = 0; i < 2; i++) | |
871 | write_av9110_bit (sc, r >> i); | |
872 | for (i = 0; i < 5; i++) | |
873 | write_av9110_bit (sc, 0x17 >> i); | |
874 | ||
875 | /* | |
876 | * stop driving serial-related signals | |
877 | */ | |
878 | lmc_gpio_mkinput (sc, | |
879 | (LMC_GEP_DATA | LMC_GEP_CLK | |
880 | | LMC_GEP_SSI_GENERATOR)); | |
881 | } | |
882 | ||
64bef763 | 883 | static void lmc_ssi_watchdog(lmc_softc_t * const sc) |
1da177e4 | 884 | { |
64bef763 KH |
885 | u16 mii17 = lmc_mii_readreg(sc, 0, 17); |
886 | if (((mii17 >> 3) & 7) == 7) | |
887 | lmc_led_off(sc, LMC_MII16_LED2); | |
888 | else | |
889 | lmc_led_on(sc, LMC_MII16_LED2); | |
1da177e4 LT |
890 | } |
891 | ||
892 | /* | |
893 | * T1 methods | |
894 | */ | |
895 | ||
896 | /* | |
897 | * The framer regs are multiplexed through MII regs 17 & 18 | |
898 | * write the register address to MII reg 17 and the * data to MII reg 18. */ | |
899 | static void | |
900 | lmc_t1_write (lmc_softc_t * const sc, int a, int d) | |
901 | { | |
902 | lmc_mii_writereg (sc, 0, 17, a); | |
903 | lmc_mii_writereg (sc, 0, 18, d); | |
904 | } | |
905 | ||
906 | /* Save a warning | |
907 | static int | |
908 | lmc_t1_read (lmc_softc_t * const sc, int a) | |
909 | { | |
910 | lmc_mii_writereg (sc, 0, 17, a); | |
911 | return lmc_mii_readreg (sc, 0, 18); | |
912 | } | |
913 | */ | |
914 | ||
915 | ||
916 | static void | |
917 | lmc_t1_init (lmc_softc_t * const sc) | |
918 | { | |
64bef763 | 919 | u16 mii16; |
1da177e4 LT |
920 | int i; |
921 | ||
922 | sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200; | |
923 | mii16 = lmc_mii_readreg (sc, 0, 16); | |
924 | ||
925 | /* reset 8370 */ | |
926 | mii16 &= ~LMC_MII16_T1_RST; | |
927 | lmc_mii_writereg (sc, 0, 16, mii16 | LMC_MII16_T1_RST); | |
928 | lmc_mii_writereg (sc, 0, 16, mii16); | |
929 | ||
930 | /* set T1 or E1 line. Uses sc->lmcmii16 reg in function so update it */ | |
931 | sc->lmc_miireg16 = mii16; | |
932 | lmc_t1_set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1); | |
933 | mii16 = sc->lmc_miireg16; | |
934 | ||
935 | lmc_t1_write (sc, 0x01, 0x1B); /* CR0 - primary control */ | |
936 | lmc_t1_write (sc, 0x02, 0x42); /* JAT_CR - jitter atten config */ | |
937 | lmc_t1_write (sc, 0x14, 0x00); /* LOOP - loopback config */ | |
938 | lmc_t1_write (sc, 0x15, 0x00); /* DL3_TS - external data link timeslot */ | |
939 | lmc_t1_write (sc, 0x18, 0xFF); /* PIO - programmable I/O */ | |
940 | lmc_t1_write (sc, 0x19, 0x30); /* POE - programmable OE */ | |
941 | lmc_t1_write (sc, 0x1A, 0x0F); /* CMUX - clock input mux */ | |
942 | lmc_t1_write (sc, 0x20, 0x41); /* LIU_CR - RX LIU config */ | |
943 | lmc_t1_write (sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */ | |
944 | lmc_t1_write (sc, 0x40, 0x03); /* RCR0 - RX config */ | |
945 | lmc_t1_write (sc, 0x45, 0x00); /* RALM - RX alarm config */ | |
946 | lmc_t1_write (sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */ | |
947 | lmc_t1_write (sc, 0x68, 0x40); /* TLIU_CR - TX LIU config */ | |
948 | lmc_t1_write (sc, 0x70, 0x0D); /* TCR0 - TX framer config */ | |
949 | lmc_t1_write (sc, 0x71, 0x05); /* TCR1 - TX config */ | |
950 | lmc_t1_write (sc, 0x72, 0x0B); /* TFRM - TX frame format */ | |
951 | lmc_t1_write (sc, 0x73, 0x00); /* TERROR - TX error insert */ | |
952 | lmc_t1_write (sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */ | |
953 | lmc_t1_write (sc, 0x75, 0x00); /* TALM - TX alarm signal config */ | |
954 | lmc_t1_write (sc, 0x76, 0x00); /* TPATT - TX test pattern config */ | |
955 | lmc_t1_write (sc, 0x77, 0x00); /* TLB - TX inband loopback config */ | |
956 | lmc_t1_write (sc, 0x90, 0x05); /* CLAD_CR - clock rate adapter config */ | |
957 | lmc_t1_write (sc, 0x91, 0x05); /* CSEL - clad freq sel */ | |
958 | lmc_t1_write (sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */ | |
959 | lmc_t1_write (sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */ | |
960 | lmc_t1_write (sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */ | |
961 | lmc_t1_write (sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */ | |
962 | lmc_t1_write (sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */ | |
963 | for (i = 0; i < 32; i++) | |
964 | { | |
965 | lmc_t1_write (sc, 0x0E0 + i, 0x00); /* SBCn - sys bus per-channel ctl */ | |
966 | lmc_t1_write (sc, 0x100 + i, 0x00); /* TPCn - TX per-channel ctl */ | |
967 | lmc_t1_write (sc, 0x180 + i, 0x00); /* RPCn - RX per-channel ctl */ | |
968 | } | |
969 | for (i = 1; i < 25; i++) | |
970 | { | |
971 | lmc_t1_write (sc, 0x0E0 + i, 0x0D); /* SBCn - sys bus per-channel ctl */ | |
972 | } | |
973 | ||
974 | mii16 |= LMC_MII16_T1_XOE; | |
975 | lmc_mii_writereg (sc, 0, 16, mii16); | |
976 | sc->lmc_miireg16 = mii16; | |
977 | } | |
978 | ||
979 | static void | |
980 | lmc_t1_default (lmc_softc_t * const sc) | |
981 | { | |
982 | sc->lmc_miireg16 = LMC_MII16_LED_ALL; | |
983 | sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); | |
984 | sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1); | |
985 | sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); | |
986 | /* Right now we can only clock from out internal source */ | |
987 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; | |
988 | } | |
989 | /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed. | |
990 | */ | |
991 | static void | |
992 | lmc_t1_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
993 | { | |
994 | if (ctl == NULL) | |
995 | { | |
996 | sc->lmc_media->set_circuit_type (sc, sc->ictl.circuit_type); | |
997 | lmc_set_protocol (sc, NULL); | |
998 | ||
999 | return; | |
1000 | } | |
1001 | /* | |
1002 | * check for change in circuit type */ | |
1003 | if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1 | |
1004 | && sc->ictl.circuit_type == | |
1005 | LMC_CTL_CIRCUIT_TYPE_E1) sc->lmc_media->set_circuit_type (sc, | |
1006 | LMC_CTL_CIRCUIT_TYPE_E1); | |
1007 | else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1 | |
1008 | && sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1) | |
1009 | sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1); | |
1010 | lmc_set_protocol (sc, ctl); | |
1011 | } | |
1012 | /* | |
1013 | * return hardware link status. | |
1014 | * 0 == link is down, 1 == link is up. | |
1015 | */ static int | |
1016 | lmc_t1_get_link_status (lmc_softc_t * const sc) | |
1017 | { | |
64bef763 | 1018 | u16 link_status; |
1da177e4 LT |
1019 | int ret = 1; |
1020 | ||
1021 | /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions | |
1022 | * led0 yellow = far-end adapter is in Red alarm condition | |
1023 | * led1 blue = received an Alarm Indication signal | |
1024 | * (upstream failure) | |
1025 | * led2 Green = power to adapter, Gate Array loaded & driver | |
1026 | * attached | |
1027 | * led3 red = Loss of Signal (LOS) or out of frame (OOF) | |
1028 | * conditions detected on T3 receive signal | |
1029 | */ | |
1030 | lmc_trace(sc->lmc_device, "lmc_t1_get_link_status in"); | |
1031 | lmc_led_on(sc, LMC_DS3_LED2); | |
1032 | ||
1033 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM1_STATUS); | |
1034 | link_status = lmc_mii_readreg (sc, 0, 18); | |
1035 | ||
1036 | ||
1037 | if (link_status & T1F_RAIS) { /* turn on blue LED */ | |
1038 | ret = 0; | |
1039 | if(sc->last_led_err[1] != 1){ | |
1040 | printk(KERN_WARNING "%s: Receive AIS/Blue Alarm. Far end in RED alarm\n", sc->name); | |
1041 | } | |
1042 | lmc_led_on(sc, LMC_DS3_LED1); | |
1043 | sc->last_led_err[1] = 1; | |
1044 | } | |
1045 | else { | |
1046 | if(sc->last_led_err[1] != 0){ | |
1047 | printk(KERN_WARNING "%s: End AIS/Blue Alarm\n", sc->name); | |
1048 | } | |
1049 | lmc_led_off (sc, LMC_DS3_LED1); | |
1050 | sc->last_led_err[1] = 0; | |
1051 | } | |
1052 | ||
1053 | /* | |
1054 | * Yellow Alarm is nasty evil stuff, looks at data patterns | |
1055 | * inside the channel and confuses it with HDLC framing | |
1056 | * ignore all yellow alarms. | |
1057 | * | |
1058 | * Do listen to MultiFrame Yellow alarm which while implemented | |
1059 | * different ways isn't in the channel and hence somewhat | |
1060 | * more reliable | |
1061 | */ | |
1062 | ||
1063 | if (link_status & T1F_RMYEL) { | |
1064 | ret = 0; | |
1065 | if(sc->last_led_err[0] != 1){ | |
1066 | printk(KERN_WARNING "%s: Receive Yellow AIS Alarm\n", sc->name); | |
1067 | } | |
1068 | lmc_led_on(sc, LMC_DS3_LED0); | |
1069 | sc->last_led_err[0] = 1; | |
1070 | } | |
1071 | else { | |
1072 | if(sc->last_led_err[0] != 0){ | |
1073 | printk(KERN_WARNING "%s: End of Yellow AIS Alarm\n", sc->name); | |
1074 | } | |
1075 | lmc_led_off(sc, LMC_DS3_LED0); | |
1076 | sc->last_led_err[0] = 0; | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Loss of signal and los of frame | |
1081 | * Use the green bit to identify which one lit the led | |
1082 | */ | |
1083 | if(link_status & T1F_RLOF){ | |
1084 | ret = 0; | |
1085 | if(sc->last_led_err[3] != 1){ | |
1086 | printk(KERN_WARNING "%s: Local Red Alarm: Loss of Framing\n", sc->name); | |
1087 | } | |
1088 | lmc_led_on(sc, LMC_DS3_LED3); | |
1089 | sc->last_led_err[3] = 1; | |
1090 | ||
1091 | } | |
1092 | else { | |
1093 | if(sc->last_led_err[3] != 0){ | |
1094 | printk(KERN_WARNING "%s: End Red Alarm (LOF)\n", sc->name); | |
1095 | } | |
1096 | if( ! (link_status & T1F_RLOS)) | |
1097 | lmc_led_off(sc, LMC_DS3_LED3); | |
1098 | sc->last_led_err[3] = 0; | |
1099 | } | |
1100 | ||
1101 | if(link_status & T1F_RLOS){ | |
1102 | ret = 0; | |
1103 | if(sc->last_led_err[2] != 1){ | |
1104 | printk(KERN_WARNING "%s: Local Red Alarm: Loss of Signal\n", sc->name); | |
1105 | } | |
1106 | lmc_led_on(sc, LMC_DS3_LED3); | |
1107 | sc->last_led_err[2] = 1; | |
1108 | ||
1109 | } | |
1110 | else { | |
1111 | if(sc->last_led_err[2] != 0){ | |
1112 | printk(KERN_WARNING "%s: End Red Alarm (LOS)\n", sc->name); | |
1113 | } | |
1114 | if( ! (link_status & T1F_RLOF)) | |
1115 | lmc_led_off(sc, LMC_DS3_LED3); | |
1116 | sc->last_led_err[2] = 0; | |
1117 | } | |
1118 | ||
1119 | sc->lmc_xinfo.t1_alarm1_status = link_status; | |
1120 | ||
1121 | lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM2_STATUS); | |
1122 | sc->lmc_xinfo.t1_alarm2_status = lmc_mii_readreg (sc, 0, 18); | |
1123 | ||
1124 | ||
1125 | lmc_trace(sc->lmc_device, "lmc_t1_get_link_status out"); | |
1126 | ||
1127 | return ret; | |
1128 | } | |
1129 | ||
1130 | /* | |
1131 | * 1 == T1 Circuit Type , 0 == E1 Circuit Type | |
1132 | */ | |
1133 | static void | |
1134 | lmc_t1_set_circuit_type (lmc_softc_t * const sc, int ie) | |
1135 | { | |
1136 | if (ie == LMC_CTL_CIRCUIT_TYPE_T1) { | |
1137 | sc->lmc_miireg16 |= LMC_MII16_T1_Z; | |
1138 | sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1; | |
1139 | printk(KERN_INFO "%s: In T1 Mode\n", sc->name); | |
1140 | } | |
1141 | else { | |
1142 | sc->lmc_miireg16 &= ~LMC_MII16_T1_Z; | |
1143 | sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_E1; | |
1144 | printk(KERN_INFO "%s: In E1 Mode\n", sc->name); | |
1145 | } | |
1146 | ||
1147 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
1148 | ||
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * 0 == 16bit, 1 == 32bit */ | |
1153 | static void | |
1154 | lmc_t1_set_crc_length (lmc_softc_t * const sc, int state) | |
1155 | { | |
1156 | if (state == LMC_CTL_CRC_LENGTH_32) | |
1157 | { | |
1158 | /* 32 bit */ | |
1159 | sc->lmc_miireg16 |= LMC_MII16_T1_CRC; | |
1160 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; | |
1161 | sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4; | |
1162 | ||
1163 | } | |
1164 | else | |
1165 | { | |
1166 | /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC; | |
1167 | sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; | |
1168 | sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2; | |
1169 | ||
1170 | } | |
1171 | ||
1172 | lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * 1 == internal, 0 == external | |
1177 | */ | |
1178 | static void | |
1179 | lmc_t1_set_clock (lmc_softc_t * const sc, int ie) | |
1180 | { | |
1181 | int old; | |
1182 | old = ie; | |
1183 | if (ie == LMC_CTL_CLOCK_SOURCE_EXT) | |
1184 | { | |
1185 | sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK); | |
1186 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
1187 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; | |
1188 | if(old != ie) | |
1189 | printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); | |
1190 | } | |
1191 | else | |
1192 | { | |
1193 | sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK; | |
1194 | LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); | |
1195 | sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; | |
1196 | if(old != ie) | |
1197 | printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | static void | |
1202 | lmc_t1_watchdog (lmc_softc_t * const sc) | |
1203 | { | |
1204 | } | |
1205 | ||
1206 | static void | |
1207 | lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl) | |
1208 | { | |
79ea13ce AV |
1209 | if (!ctl) |
1210 | sc->ictl.keepalive_onoff = LMC_CTL_ON; | |
1da177e4 | 1211 | } |