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Do dirty page accounting when removing a page from the page cache
[pv_ops_mirror.git] / drivers / isdn / hisax / isdnl1.c
bloba14204ec88eec7990aeadbe332b7406840a2bbd3
1 /* $Id: isdnl1.c,v 2.46.2.5 2004/02/11 13:21:34 keil Exp $
2 *
3 * common low level stuff for Siemens Chipsetbased isdn cards
4 *
5 * Author Karsten Keil
6 * based on the teles driver from Jan den Ouden
7 * Copyright by Karsten Keil <keil@isdn4linux.de>
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 *
12 * For changes and modifications please read
13 * Documentation/isdn/HiSax.cert
14 *
15 * Thanks to Jan den Ouden
16 * Fritz Elfert
17 * Beat Doebeli
18 *
19 */
20
21 const char *l1_revision = "$Revision: 2.46.2.5 $";
22
23 #include <linux/init.h>
24 #include "hisax.h"
25 #include "isdnl1.h"
26
27 #define TIMER3_VALUE 7000
28
29 static struct Fsm l1fsm_b;
30 static struct Fsm l1fsm_s;
31
32 enum {
33 ST_L1_F2,
34 ST_L1_F3,
35 ST_L1_F4,
36 ST_L1_F5,
37 ST_L1_F6,
38 ST_L1_F7,
39 ST_L1_F8,
40 };
41
42 #define L1S_STATE_COUNT (ST_L1_F8+1)
43
44 static char *strL1SState[] =
45 {
46 "ST_L1_F2",
47 "ST_L1_F3",
48 "ST_L1_F4",
49 "ST_L1_F5",
50 "ST_L1_F6",
51 "ST_L1_F7",
52 "ST_L1_F8",
53 };
54
55 #ifdef HISAX_UINTERFACE
56 static
57 struct Fsm l1fsm_u =
58 {NULL, 0, 0, NULL, NULL};
59
60 enum {
61 ST_L1_RESET,
62 ST_L1_DEACT,
63 ST_L1_SYNC2,
64 ST_L1_TRANS,
65 };
66
67 #define L1U_STATE_COUNT (ST_L1_TRANS+1)
68
69 static char *strL1UState[] =
70 {
71 "ST_L1_RESET",
72 "ST_L1_DEACT",
73 "ST_L1_SYNC2",
74 "ST_L1_TRANS",
75 };
76 #endif
77
78 enum {
79 ST_L1_NULL,
80 ST_L1_WAIT_ACT,
81 ST_L1_WAIT_DEACT,
82 ST_L1_ACTIV,
83 };
84
85 #define L1B_STATE_COUNT (ST_L1_ACTIV+1)
86
87 static char *strL1BState[] =
88 {
89 "ST_L1_NULL",
90 "ST_L1_WAIT_ACT",
91 "ST_L1_WAIT_DEACT",
92 "ST_L1_ACTIV",
93 };
94
95 enum {
96 EV_PH_ACTIVATE,
97 EV_PH_DEACTIVATE,
98 EV_RESET_IND,
99 EV_DEACT_CNF,
100 EV_DEACT_IND,
101 EV_POWER_UP,
102 EV_RSYNC_IND,
103 EV_INFO2_IND,
104 EV_INFO4_IND,
105 EV_TIMER_DEACT,
106 EV_TIMER_ACT,
107 EV_TIMER3,
108 };
109
110 #define L1_EVENT_COUNT (EV_TIMER3 + 1)
111
112 static char *strL1Event[] =
113 {
114 "EV_PH_ACTIVATE",
115 "EV_PH_DEACTIVATE",
116 "EV_RESET_IND",
117 "EV_DEACT_CNF",
118 "EV_DEACT_IND",
119 "EV_POWER_UP",
120 "EV_RSYNC_IND",
121 "EV_INFO2_IND",
122 "EV_INFO4_IND",
123 "EV_TIMER_DEACT",
124 "EV_TIMER_ACT",
125 "EV_TIMER3",
126 };
127
128 void
129 debugl1(struct IsdnCardState *cs, char *fmt, ...)
130 {
131 va_list args;
132 char tmp[8];
133
134 va_start(args, fmt);
135 sprintf(tmp, "Card%d ", cs->cardnr + 1);
136 VHiSax_putstatus(cs, tmp, fmt, args);
137 va_end(args);
138 }
139
140 static void
141 l1m_debug(struct FsmInst *fi, char *fmt, ...)
142 {
143 va_list args;
144 struct PStack *st = fi->userdata;
145 struct IsdnCardState *cs = st->l1.hardware;
146 char tmp[8];
147
148 va_start(args, fmt);
149 sprintf(tmp, "Card%d ", cs->cardnr + 1);
150 VHiSax_putstatus(cs, tmp, fmt, args);
151 va_end(args);
152 }
153
154 static void
155 L1activated(struct IsdnCardState *cs)
156 {
157 struct PStack *st;
158
159 st = cs->stlist;
160 while (st) {
161 if (test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
162 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
163 else
164 st->l1.l1l2(st, PH_ACTIVATE | INDICATION, NULL);
165 st = st->next;
166 }
167 }
168
169 static void
170 L1deactivated(struct IsdnCardState *cs)
171 {
172 struct PStack *st;
173
174 st = cs->stlist;
175 while (st) {
176 if (test_bit(FLG_L1_DBUSY, &cs->HW_Flags))
177 st->l1.l1l2(st, PH_PAUSE | CONFIRM, NULL);
178 st->l1.l1l2(st, PH_DEACTIVATE | INDICATION, NULL);
179 st = st->next;
180 }
181 test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags);
182 }
183
184 void
185 DChannel_proc_xmt(struct IsdnCardState *cs)
186 {
187 struct PStack *stptr;
188
189 if (cs->tx_skb)
190 return;
191
192 stptr = cs->stlist;
193 while (stptr != NULL) {
194 if (test_and_clear_bit(FLG_L1_PULL_REQ, &stptr->l1.Flags)) {
195 stptr->l1.l1l2(stptr, PH_PULL | CONFIRM, NULL);
196 break;
197 } else
198 stptr = stptr->next;
199 }
200 }
201
202 void
203 DChannel_proc_rcv(struct IsdnCardState *cs)
204 {
205 struct sk_buff *skb, *nskb;
206 struct PStack *stptr = cs->stlist;
207 int found, tei, sapi;
208
209 if (stptr)
210 if (test_bit(FLG_L1_ACTTIMER, &stptr->l1.Flags))
211 FsmEvent(&stptr->l1.l1m, EV_TIMER_ACT, NULL);
212 while ((skb = skb_dequeue(&cs->rq))) {
213 #ifdef L2FRAME_DEBUG /* psa */
214 if (cs->debug & L1_DEB_LAPD)
215 Logl2Frame(cs, skb, "PH_DATA", 1);
216 #endif
217 stptr = cs->stlist;
218 if (skb->len<3) {
219 debugl1(cs, "D-channel frame too short(%d)",skb->len);
220 dev_kfree_skb(skb);
221 return;
222 }
223 if ((skb->data[0] & 1) || !(skb->data[1] &1)) {
224 debugl1(cs, "D-channel frame wrong EA0/EA1");
225 dev_kfree_skb(skb);
226 return;
227 }
228 sapi = skb->data[0] >> 2;
229 tei = skb->data[1] >> 1;
230 if (cs->debug & DEB_DLOG_HEX)
231 LogFrame(cs, skb->data, skb->len);
232 if (cs->debug & DEB_DLOG_VERBOSE)
233 dlogframe(cs, skb, 1);
234 if (tei == GROUP_TEI) {
235 if (sapi == CTRL_SAPI) { /* sapi 0 */
236 while (stptr != NULL) {
237 if ((nskb = skb_clone(skb, GFP_ATOMIC)))
238 stptr->l1.l1l2(stptr, PH_DATA | INDICATION, nskb);
239 else
240 printk(KERN_WARNING "HiSax: isdn broadcast buffer shortage\n");
241 stptr = stptr->next;
242 }
243 } else if (sapi == TEI_SAPI) {
244 while (stptr != NULL) {
245 if ((nskb = skb_clone(skb, GFP_ATOMIC)))
246 stptr->l1.l1tei(stptr, PH_DATA | INDICATION, nskb);
247 else
248 printk(KERN_WARNING "HiSax: tei broadcast buffer shortage\n");
249 stptr = stptr->next;
250 }
251 }
252 dev_kfree_skb(skb);
253 } else if (sapi == CTRL_SAPI) { /* sapi 0 */
254 found = 0;
255 while (stptr != NULL)
256 if (tei == stptr->l2.tei) {
257 stptr->l1.l1l2(stptr, PH_DATA | INDICATION, skb);
258 found = !0;
259 break;
260 } else
261 stptr = stptr->next;
262 if (!found)
263 dev_kfree_skb(skb);
264 } else
265 dev_kfree_skb(skb);
266 }
267 }
268
269 static void
270 BChannel_proc_xmt(struct BCState *bcs)
271 {
272 struct PStack *st = bcs->st;
273
274 if (test_bit(BC_FLG_BUSY, &bcs->Flag)) {
275 debugl1(bcs->cs, "BC_BUSY Error");
276 return;
277 }
278
279 if (test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags))
280 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
281 if (!test_bit(BC_FLG_ACTIV, &bcs->Flag)) {
282 if (!test_bit(BC_FLG_BUSY, &bcs->Flag) &&
283 skb_queue_empty(&bcs->squeue)) {
284 st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
285 }
286 }
287 }
288
289 static void
290 BChannel_proc_rcv(struct BCState *bcs)
291 {
292 struct sk_buff *skb;
293
294 if (bcs->st->l1.l1m.state == ST_L1_WAIT_ACT) {
295 FsmDelTimer(&bcs->st->l1.timer, 4);
296 FsmEvent(&bcs->st->l1.l1m, EV_TIMER_ACT, NULL);
297 }
298 while ((skb = skb_dequeue(&bcs->rqueue))) {
299 bcs->st->l1.l1l2(bcs->st, PH_DATA | INDICATION, skb);
300 }
301 }
302
303 static void
304 BChannel_proc_ack(struct BCState *bcs)
305 {
306 u_long flags;
307 int ack;
308
309 spin_lock_irqsave(&bcs->aclock, flags);
310 ack = bcs->ackcnt;
311 bcs->ackcnt = 0;
312 spin_unlock_irqrestore(&bcs->aclock, flags);
313 if (ack)
314 lli_writewakeup(bcs->st, ack);
315 }
316
317 void
318 BChannel_bh(struct work_struct *work)
319 {
320 struct BCState *bcs = container_of(work, struct BCState, tqueue);
321
322 if (!bcs)
323 return;
324 if (test_and_clear_bit(B_RCVBUFREADY, &bcs->event))
325 BChannel_proc_rcv(bcs);
326 if (test_and_clear_bit(B_XMTBUFREADY, &bcs->event))
327 BChannel_proc_xmt(bcs);
328 if (test_and_clear_bit(B_ACKPENDING, &bcs->event))
329 BChannel_proc_ack(bcs);
330 }
331
332 void
333 HiSax_addlist(struct IsdnCardState *cs,
334 struct PStack *st)
335 {
336 st->next = cs->stlist;
337 cs->stlist = st;
338 }
339
340 void
341 HiSax_rmlist(struct IsdnCardState *cs,
342 struct PStack *st)
343 {
344 struct PStack *p;
345
346 FsmDelTimer(&st->l1.timer, 0);
347 if (cs->stlist == st)
348 cs->stlist = st->next;
349 else {
350 p = cs->stlist;
351 while (p)
352 if (p->next == st) {
353 p->next = st->next;
354 return;
355 } else
356 p = p->next;
357 }
358 }
359
360 void
361 init_bcstate(struct IsdnCardState *cs, int bc)
362 {
363 struct BCState *bcs = cs->bcs + bc;
364
365 bcs->cs = cs;
366 bcs->channel = bc;
367 INIT_WORK(&bcs->tqueue, BChannel_bh);
368 spin_lock_init(&bcs->aclock);
369 bcs->BC_SetStack = NULL;
370 bcs->BC_Close = NULL;
371 bcs->Flag = 0;
372 }
373
374 #ifdef L2FRAME_DEBUG /* psa */
375
376 static char *
377 l2cmd(u_char cmd)
378 {
379 switch (cmd & ~0x10) {
380 case 1:
381 return "RR";
382 case 5:
383 return "RNR";
384 case 9:
385 return "REJ";
386 case 0x6f:
387 return "SABME";
388 case 0x0f:
389 return "DM";
390 case 3:
391 return "UI";
392 case 0x43:
393 return "DISC";
394 case 0x63:
395 return "UA";
396 case 0x87:
397 return "FRMR";
398 case 0xaf:
399 return "XID";
400 default:
401 if (!(cmd & 1))
402 return "I";
403 else
404 return "invalid command";
405 }
406 }
407
408 static char tmpdeb[32];
409
410 static char *
411 l2frames(u_char * ptr)
412 {
413 switch (ptr[2] & ~0x10) {
414 case 1:
415 case 5:
416 case 9:
417 sprintf(tmpdeb, "%s[%d](nr %d)", l2cmd(ptr[2]), ptr[3] & 1, ptr[3] >> 1);
418 break;
419 case 0x6f:
420 case 0x0f:
421 case 3:
422 case 0x43:
423 case 0x63:
424 case 0x87:
425 case 0xaf:
426 sprintf(tmpdeb, "%s[%d]", l2cmd(ptr[2]), (ptr[2] & 0x10) >> 4);
427 break;
428 default:
429 if (!(ptr[2] & 1)) {
430 sprintf(tmpdeb, "I[%d](ns %d, nr %d)", ptr[3] & 1, ptr[2] >> 1, ptr[3] >> 1);
431 break;
432 } else
433 return "invalid command";
434 }
435
436
437 return tmpdeb;
438 }
439
440 void
441 Logl2Frame(struct IsdnCardState *cs, struct sk_buff *skb, char *buf, int dir)
442 {
443 u_char *ptr;
444
445 ptr = skb->data;
446
447 if (ptr[0] & 1 || !(ptr[1] & 1))
448 debugl1(cs, "Address not LAPD");
449 else
450 debugl1(cs, "%s %s: %s%c (sapi %d, tei %d)",
451 (dir ? "<-" : "->"), buf, l2frames(ptr),
452 ((ptr[0] & 2) >> 1) == dir ? 'C' : 'R', ptr[0] >> 2, ptr[1] >> 1);
453 }
454 #endif
455
456 static void
457 l1_reset(struct FsmInst *fi, int event, void *arg)
458 {
459 FsmChangeState(fi, ST_L1_F3);
460 }
461
462 static void
463 l1_deact_cnf(struct FsmInst *fi, int event, void *arg)
464 {
465 struct PStack *st = fi->userdata;
466
467 FsmChangeState(fi, ST_L1_F3);
468 if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
469 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
470 }
471
472 static void
473 l1_deact_req_s(struct FsmInst *fi, int event, void *arg)
474 {
475 struct PStack *st = fi->userdata;
476
477 FsmChangeState(fi, ST_L1_F3);
478 FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
479 test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
480 }
481
482 static void
483 l1_power_up_s(struct FsmInst *fi, int event, void *arg)
484 {
485 struct PStack *st = fi->userdata;
486
487 if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags)) {
488 FsmChangeState(fi, ST_L1_F4);
489 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
490 FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
491 test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
492 } else
493 FsmChangeState(fi, ST_L1_F3);
494 }
495
496 static void
497 l1_go_F5(struct FsmInst *fi, int event, void *arg)
498 {
499 FsmChangeState(fi, ST_L1_F5);
500 }
501
502 static void
503 l1_go_F8(struct FsmInst *fi, int event, void *arg)
504 {
505 FsmChangeState(fi, ST_L1_F8);
506 }
507
508 static void
509 l1_info2_ind(struct FsmInst *fi, int event, void *arg)
510 {
511 struct PStack *st = fi->userdata;
512
513 #ifdef HISAX_UINTERFACE
514 if (test_bit(FLG_L1_UINT, &st->l1.Flags))
515 FsmChangeState(fi, ST_L1_SYNC2);
516 else
517 #endif
518 FsmChangeState(fi, ST_L1_F6);
519 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
520 }
521
522 static void
523 l1_info4_ind(struct FsmInst *fi, int event, void *arg)
524 {
525 struct PStack *st = fi->userdata;
526
527 #ifdef HISAX_UINTERFACE
528 if (test_bit(FLG_L1_UINT, &st->l1.Flags))
529 FsmChangeState(fi, ST_L1_TRANS);
530 else
531 #endif
532 FsmChangeState(fi, ST_L1_F7);
533 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
534 if (test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags))
535 FsmDelTimer(&st->l1.timer, 4);
536 if (!test_bit(FLG_L1_ACTIVATED, &st->l1.Flags)) {
537 if (test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags))
538 FsmDelTimer(&st->l1.timer, 3);
539 FsmRestartTimer(&st->l1.timer, 110, EV_TIMER_ACT, NULL, 2);
540 test_and_set_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
541 }
542 }
543
544 static void
545 l1_timer3(struct FsmInst *fi, int event, void *arg)
546 {
547 struct PStack *st = fi->userdata;
548
549 test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags);
550 if (test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
551 L1deactivated(st->l1.hardware);
552
553 #ifdef HISAX_UINTERFACE
554 if (!test_bit(FLG_L1_UINT, &st->l1.Flags))
555 #endif
556 if (st->l1.l1m.state != ST_L1_F6) {
557 FsmChangeState(fi, ST_L1_F3);
558 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
559 }
560 }
561
562 static void
563 l1_timer_act(struct FsmInst *fi, int event, void *arg)
564 {
565 struct PStack *st = fi->userdata;
566
567 test_and_clear_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
568 test_and_set_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
569 L1activated(st->l1.hardware);
570 }
571
572 static void
573 l1_timer_deact(struct FsmInst *fi, int event, void *arg)
574 {
575 struct PStack *st = fi->userdata;
576
577 test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
578 test_and_clear_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
579 L1deactivated(st->l1.hardware);
580 st->l1.l1hw(st, HW_DEACTIVATE | RESPONSE, NULL);
581 }
582
583 static void
584 l1_activate_s(struct FsmInst *fi, int event, void *arg)
585 {
586 struct PStack *st = fi->userdata;
587
588 st->l1.l1hw(st, HW_RESET | REQUEST, NULL);
589 }
590
591 static void
592 l1_activate_no(struct FsmInst *fi, int event, void *arg)
593 {
594 struct PStack *st = fi->userdata;
595
596 if ((!test_bit(FLG_L1_DEACTTIMER, &st->l1.Flags)) && (!test_bit(FLG_L1_T3RUN, &st->l1.Flags))) {
597 test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
598 L1deactivated(st->l1.hardware);
599 }
600 }
601
602 static struct FsmNode L1SFnList[] __initdata =
603 {
604 {ST_L1_F3, EV_PH_ACTIVATE, l1_activate_s},
605 {ST_L1_F6, EV_PH_ACTIVATE, l1_activate_no},
606 {ST_L1_F8, EV_PH_ACTIVATE, l1_activate_no},
607 {ST_L1_F3, EV_RESET_IND, l1_reset},
608 {ST_L1_F4, EV_RESET_IND, l1_reset},
609 {ST_L1_F5, EV_RESET_IND, l1_reset},
610 {ST_L1_F6, EV_RESET_IND, l1_reset},
611 {ST_L1_F7, EV_RESET_IND, l1_reset},
612 {ST_L1_F8, EV_RESET_IND, l1_reset},
613 {ST_L1_F3, EV_DEACT_CNF, l1_deact_cnf},
614 {ST_L1_F4, EV_DEACT_CNF, l1_deact_cnf},
615 {ST_L1_F5, EV_DEACT_CNF, l1_deact_cnf},
616 {ST_L1_F6, EV_DEACT_CNF, l1_deact_cnf},
617 {ST_L1_F7, EV_DEACT_CNF, l1_deact_cnf},
618 {ST_L1_F8, EV_DEACT_CNF, l1_deact_cnf},
619 {ST_L1_F6, EV_DEACT_IND, l1_deact_req_s},
620 {ST_L1_F7, EV_DEACT_IND, l1_deact_req_s},
621 {ST_L1_F8, EV_DEACT_IND, l1_deact_req_s},
622 {ST_L1_F3, EV_POWER_UP, l1_power_up_s},
623 {ST_L1_F4, EV_RSYNC_IND, l1_go_F5},
624 {ST_L1_F6, EV_RSYNC_IND, l1_go_F8},
625 {ST_L1_F7, EV_RSYNC_IND, l1_go_F8},
626 {ST_L1_F3, EV_INFO2_IND, l1_info2_ind},
627 {ST_L1_F4, EV_INFO2_IND, l1_info2_ind},
628 {ST_L1_F5, EV_INFO2_IND, l1_info2_ind},
629 {ST_L1_F7, EV_INFO2_IND, l1_info2_ind},
630 {ST_L1_F8, EV_INFO2_IND, l1_info2_ind},
631 {ST_L1_F3, EV_INFO4_IND, l1_info4_ind},
632 {ST_L1_F4, EV_INFO4_IND, l1_info4_ind},
633 {ST_L1_F5, EV_INFO4_IND, l1_info4_ind},
634 {ST_L1_F6, EV_INFO4_IND, l1_info4_ind},
635 {ST_L1_F8, EV_INFO4_IND, l1_info4_ind},
636 {ST_L1_F3, EV_TIMER3, l1_timer3},
637 {ST_L1_F4, EV_TIMER3, l1_timer3},
638 {ST_L1_F5, EV_TIMER3, l1_timer3},
639 {ST_L1_F6, EV_TIMER3, l1_timer3},
640 {ST_L1_F8, EV_TIMER3, l1_timer3},
641 {ST_L1_F7, EV_TIMER_ACT, l1_timer_act},
642 {ST_L1_F3, EV_TIMER_DEACT, l1_timer_deact},
643 {ST_L1_F4, EV_TIMER_DEACT, l1_timer_deact},
644 {ST_L1_F5, EV_TIMER_DEACT, l1_timer_deact},
645 {ST_L1_F6, EV_TIMER_DEACT, l1_timer_deact},
646 {ST_L1_F7, EV_TIMER_DEACT, l1_timer_deact},
647 {ST_L1_F8, EV_TIMER_DEACT, l1_timer_deact},
648 };
649
650 #define L1S_FN_COUNT (sizeof(L1SFnList)/sizeof(struct FsmNode))
651
652 #ifdef HISAX_UINTERFACE
653 static void
654 l1_deact_req_u(struct FsmInst *fi, int event, void *arg)
655 {
656 struct PStack *st = fi->userdata;
657
658 FsmChangeState(fi, ST_L1_RESET);
659 FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
660 test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
661 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
662 }
663
664 static void
665 l1_power_up_u(struct FsmInst *fi, int event, void *arg)
666 {
667 struct PStack *st = fi->userdata;
668
669 FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
670 test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
671 }
672
673 static void
674 l1_info0_ind(struct FsmInst *fi, int event, void *arg)
675 {
676 FsmChangeState(fi, ST_L1_DEACT);
677 }
678
679 static void
680 l1_activate_u(struct FsmInst *fi, int event, void *arg)
681 {
682 struct PStack *st = fi->userdata;
683
684 st->l1.l1hw(st, HW_INFO1 | REQUEST, NULL);
685 }
686
687 static struct FsmNode L1UFnList[] __initdata =
688 {
689 {ST_L1_RESET, EV_DEACT_IND, l1_deact_req_u},
690 {ST_L1_DEACT, EV_DEACT_IND, l1_deact_req_u},
691 {ST_L1_SYNC2, EV_DEACT_IND, l1_deact_req_u},
692 {ST_L1_TRANS, EV_DEACT_IND, l1_deact_req_u},
693 {ST_L1_DEACT, EV_PH_ACTIVATE, l1_activate_u},
694 {ST_L1_DEACT, EV_POWER_UP, l1_power_up_u},
695 {ST_L1_DEACT, EV_INFO2_IND, l1_info2_ind},
696 {ST_L1_TRANS, EV_INFO2_IND, l1_info2_ind},
697 {ST_L1_RESET, EV_DEACT_CNF, l1_info0_ind},
698 {ST_L1_DEACT, EV_INFO4_IND, l1_info4_ind},
699 {ST_L1_SYNC2, EV_INFO4_IND, l1_info4_ind},
700 {ST_L1_RESET, EV_INFO4_IND, l1_info4_ind},
701 {ST_L1_DEACT, EV_TIMER3, l1_timer3},
702 {ST_L1_SYNC2, EV_TIMER3, l1_timer3},
703 {ST_L1_TRANS, EV_TIMER_ACT, l1_timer_act},
704 {ST_L1_DEACT, EV_TIMER_DEACT, l1_timer_deact},
705 {ST_L1_SYNC2, EV_TIMER_DEACT, l1_timer_deact},
706 {ST_L1_RESET, EV_TIMER_DEACT, l1_timer_deact},
707 };
708
709 #define L1U_FN_COUNT (sizeof(L1UFnList)/sizeof(struct FsmNode))
710
711 #endif
712
713 static void
714 l1b_activate(struct FsmInst *fi, int event, void *arg)
715 {
716 struct PStack *st = fi->userdata;
717
718 FsmChangeState(fi, ST_L1_WAIT_ACT);
719 FsmRestartTimer(&st->l1.timer, st->l1.delay, EV_TIMER_ACT, NULL, 2);
720 }
721
722 static void
723 l1b_deactivate(struct FsmInst *fi, int event, void *arg)
724 {
725 struct PStack *st = fi->userdata;
726
727 FsmChangeState(fi, ST_L1_WAIT_DEACT);
728 FsmRestartTimer(&st->l1.timer, 10, EV_TIMER_DEACT, NULL, 2);
729 }
730
731 static void
732 l1b_timer_act(struct FsmInst *fi, int event, void *arg)
733 {
734 struct PStack *st = fi->userdata;
735
736 FsmChangeState(fi, ST_L1_ACTIV);
737 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
738 }
739
740 static void
741 l1b_timer_deact(struct FsmInst *fi, int event, void *arg)
742 {
743 struct PStack *st = fi->userdata;
744
745 FsmChangeState(fi, ST_L1_NULL);
746 st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
747 }
748
749 static struct FsmNode L1BFnList[] __initdata =
750 {
751 {ST_L1_NULL, EV_PH_ACTIVATE, l1b_activate},
752 {ST_L1_WAIT_ACT, EV_TIMER_ACT, l1b_timer_act},
753 {ST_L1_ACTIV, EV_PH_DEACTIVATE, l1b_deactivate},
754 {ST_L1_WAIT_DEACT, EV_TIMER_DEACT, l1b_timer_deact},
755 };
756
757 #define L1B_FN_COUNT (sizeof(L1BFnList)/sizeof(struct FsmNode))
758
759 int __init
760 Isdnl1New(void)
761 {
762 int retval;
763
764 l1fsm_s.state_count = L1S_STATE_COUNT;
765 l1fsm_s.event_count = L1_EVENT_COUNT;
766 l1fsm_s.strEvent = strL1Event;
767 l1fsm_s.strState = strL1SState;
768 retval = FsmNew(&l1fsm_s, L1SFnList, L1S_FN_COUNT);
769 if (retval)
770 return retval;
771
772 l1fsm_b.state_count = L1B_STATE_COUNT;
773 l1fsm_b.event_count = L1_EVENT_COUNT;
774 l1fsm_b.strEvent = strL1Event;
775 l1fsm_b.strState = strL1BState;
776 retval = FsmNew(&l1fsm_b, L1BFnList, L1B_FN_COUNT);
777 if (retval) {
778 FsmFree(&l1fsm_s);
779 return retval;
780 }
781 #ifdef HISAX_UINTERFACE
782 l1fsm_u.state_count = L1U_STATE_COUNT;
783 l1fsm_u.event_count = L1_EVENT_COUNT;
784 l1fsm_u.strEvent = strL1Event;
785 l1fsm_u.strState = strL1UState;
786 retval = FsmNew(&l1fsm_u, L1UFnList, L1U_FN_COUNT);
787 if (retval) {
788 FsmFree(&l1fsm_s);
789 FsmFree(&l1fsm_b);
790 return retval;
791 }
792 #endif
793 return 0;
794 }
795
796 void Isdnl1Free(void)
797 {
798 #ifdef HISAX_UINTERFACE
799 FsmFree(&l1fsm_u);
800 #endif
801 FsmFree(&l1fsm_s);
802 FsmFree(&l1fsm_b);
803 }
804
805 static void
806 dch_l2l1(struct PStack *st, int pr, void *arg)
807 {
808 struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
809
810 switch (pr) {
811 case (PH_DATA | REQUEST):
812 case (PH_PULL | REQUEST):
813 case (PH_PULL |INDICATION):
814 st->l1.l1hw(st, pr, arg);
815 break;
816 case (PH_ACTIVATE | REQUEST):
817 if (cs->debug)
818 debugl1(cs, "PH_ACTIVATE_REQ %s",
819 st->l1.l1m.fsm->strState[st->l1.l1m.state]);
820 if (test_bit(FLG_L1_ACTIVATED, &st->l1.Flags))
821 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
822 else {
823 test_and_set_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
824 FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, arg);
825 }
826 break;
827 case (PH_TESTLOOP | REQUEST):
828 if (1 & (long) arg)
829 debugl1(cs, "PH_TEST_LOOP B1");
830 if (2 & (long) arg)
831 debugl1(cs, "PH_TEST_LOOP B2");
832 if (!(3 & (long) arg))
833 debugl1(cs, "PH_TEST_LOOP DISABLED");
834 st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
835 break;
836 default:
837 if (cs->debug)
838 debugl1(cs, "dch_l2l1 msg %04X unhandled", pr);
839 break;
840 }
841 }
842
843 void
844 l1_msg(struct IsdnCardState *cs, int pr, void *arg) {
845 struct PStack *st;
846
847 st = cs->stlist;
848
849 while (st) {
850 switch(pr) {
851 case (HW_RESET | INDICATION):
852 FsmEvent(&st->l1.l1m, EV_RESET_IND, arg);
853 break;
854 case (HW_DEACTIVATE | CONFIRM):
855 FsmEvent(&st->l1.l1m, EV_DEACT_CNF, arg);
856 break;
857 case (HW_DEACTIVATE | INDICATION):
858 FsmEvent(&st->l1.l1m, EV_DEACT_IND, arg);
859 break;
860 case (HW_POWERUP | CONFIRM):
861 FsmEvent(&st->l1.l1m, EV_POWER_UP, arg);
862 break;
863 case (HW_RSYNC | INDICATION):
864 FsmEvent(&st->l1.l1m, EV_RSYNC_IND, arg);
865 break;
866 case (HW_INFO2 | INDICATION):
867 FsmEvent(&st->l1.l1m, EV_INFO2_IND, arg);
868 break;
869 case (HW_INFO4_P8 | INDICATION):
870 case (HW_INFO4_P10 | INDICATION):
871 FsmEvent(&st->l1.l1m, EV_INFO4_IND, arg);
872 break;
873 default:
874 if (cs->debug)
875 debugl1(cs, "l1msg %04X unhandled", pr);
876 break;
877 }
878 st = st->next;
879 }
880 }
881
882 void
883 l1_msg_b(struct PStack *st, int pr, void *arg) {
884 switch(pr) {
885 case (PH_ACTIVATE | REQUEST):
886 FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, NULL);
887 break;
888 case (PH_DEACTIVATE | REQUEST):
889 FsmEvent(&st->l1.l1m, EV_PH_DEACTIVATE, NULL);
890 break;
891 }
892 }
893
894 void
895 setstack_HiSax(struct PStack *st, struct IsdnCardState *cs)
896 {
897 st->l1.hardware = cs;
898 st->protocol = cs->protocol;
899 st->l1.l1m.fsm = &l1fsm_s;
900 st->l1.l1m.state = ST_L1_F3;
901 st->l1.Flags = 0;
902 #ifdef HISAX_UINTERFACE
903 if (test_bit(FLG_HW_L1_UINT, &cs->HW_Flags)) {
904 st->l1.l1m.fsm = &l1fsm_u;
905 st->l1.l1m.state = ST_L1_RESET;
906 st->l1.Flags = FLG_L1_UINT;
907 }
908 #endif
909 st->l1.l1m.debug = cs->debug;
910 st->l1.l1m.userdata = st;
911 st->l1.l1m.userint = 0;
912 st->l1.l1m.printdebug = l1m_debug;
913 FsmInitTimer(&st->l1.l1m, &st->l1.timer);
914 setstack_tei(st);
915 setstack_manager(st);
916 st->l1.stlistp = &(cs->stlist);
917 st->l2.l2l1 = dch_l2l1;
918 if (cs->setstack_d)
919 cs->setstack_d(st, cs);
920 }
921
922 void
923 setstack_l1_B(struct PStack *st)
924 {
925 struct IsdnCardState *cs = st->l1.hardware;
926
927 st->l1.l1m.fsm = &l1fsm_b;
928 st->l1.l1m.state = ST_L1_NULL;
929 st->l1.l1m.debug = cs->debug;
930 st->l1.l1m.userdata = st;
931 st->l1.l1m.userint = 0;
932 st->l1.l1m.printdebug = l1m_debug;
933 st->l1.Flags = 0;
934 FsmInitTimer(&st->l1.l1m, &st->l1.timer);
935 }
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