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[PATCH] g_file_storage: fix obscure race condition
[linux/fpc-iii.git] / drivers / isdn / hisax / isdnl1.c
blobbab356886483e257b7c718e4bde5fe6c7e3ae9f7
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 BCState *bcs)
319 {
320 if (!bcs)
321 return;
322 if (test_and_clear_bit(B_RCVBUFREADY, &bcs->event))
323 BChannel_proc_rcv(bcs);
324 if (test_and_clear_bit(B_XMTBUFREADY, &bcs->event))
325 BChannel_proc_xmt(bcs);
326 if (test_and_clear_bit(B_ACKPENDING, &bcs->event))
327 BChannel_proc_ack(bcs);
328 }
329
330 void
331 HiSax_addlist(struct IsdnCardState *cs,
332 struct PStack *st)
333 {
334 st->next = cs->stlist;
335 cs->stlist = st;
336 }
337
338 void
339 HiSax_rmlist(struct IsdnCardState *cs,
340 struct PStack *st)
341 {
342 struct PStack *p;
343
344 FsmDelTimer(&st->l1.timer, 0);
345 if (cs->stlist == st)
346 cs->stlist = st->next;
347 else {
348 p = cs->stlist;
349 while (p)
350 if (p->next == st) {
351 p->next = st->next;
352 return;
353 } else
354 p = p->next;
355 }
356 }
357
358 void
359 init_bcstate(struct IsdnCardState *cs, int bc)
360 {
361 struct BCState *bcs = cs->bcs + bc;
362
363 bcs->cs = cs;
364 bcs->channel = bc;
365 INIT_WORK(&bcs->tqueue, (void *)(void *) BChannel_bh, bcs);
366 spin_lock_init(&bcs->aclock);
367 bcs->BC_SetStack = NULL;
368 bcs->BC_Close = NULL;
369 bcs->Flag = 0;
370 }
371
372 #ifdef L2FRAME_DEBUG /* psa */
373
374 static char *
375 l2cmd(u_char cmd)
376 {
377 switch (cmd & ~0x10) {
378 case 1:
379 return "RR";
380 case 5:
381 return "RNR";
382 case 9:
383 return "REJ";
384 case 0x6f:
385 return "SABME";
386 case 0x0f:
387 return "DM";
388 case 3:
389 return "UI";
390 case 0x43:
391 return "DISC";
392 case 0x63:
393 return "UA";
394 case 0x87:
395 return "FRMR";
396 case 0xaf:
397 return "XID";
398 default:
399 if (!(cmd & 1))
400 return "I";
401 else
402 return "invalid command";
403 }
404 }
405
406 static char tmpdeb[32];
407
408 static char *
409 l2frames(u_char * ptr)
410 {
411 switch (ptr[2] & ~0x10) {
412 case 1:
413 case 5:
414 case 9:
415 sprintf(tmpdeb, "%s[%d](nr %d)", l2cmd(ptr[2]), ptr[3] & 1, ptr[3] >> 1);
416 break;
417 case 0x6f:
418 case 0x0f:
419 case 3:
420 case 0x43:
421 case 0x63:
422 case 0x87:
423 case 0xaf:
424 sprintf(tmpdeb, "%s[%d]", l2cmd(ptr[2]), (ptr[2] & 0x10) >> 4);
425 break;
426 default:
427 if (!(ptr[2] & 1)) {
428 sprintf(tmpdeb, "I[%d](ns %d, nr %d)", ptr[3] & 1, ptr[2] >> 1, ptr[3] >> 1);
429 break;
430 } else
431 return "invalid command";
432 }
433
434
435 return tmpdeb;
436 }
437
438 void
439 Logl2Frame(struct IsdnCardState *cs, struct sk_buff *skb, char *buf, int dir)
440 {
441 u_char *ptr;
442
443 ptr = skb->data;
444
445 if (ptr[0] & 1 || !(ptr[1] & 1))
446 debugl1(cs, "Address not LAPD");
447 else
448 debugl1(cs, "%s %s: %s%c (sapi %d, tei %d)",
449 (dir ? "<-" : "->"), buf, l2frames(ptr),
450 ((ptr[0] & 2) >> 1) == dir ? 'C' : 'R', ptr[0] >> 2, ptr[1] >> 1);
451 }
452 #endif
453
454 static void
455 l1_reset(struct FsmInst *fi, int event, void *arg)
456 {
457 FsmChangeState(fi, ST_L1_F3);
458 }
459
460 static void
461 l1_deact_cnf(struct FsmInst *fi, int event, void *arg)
462 {
463 struct PStack *st = fi->userdata;
464
465 FsmChangeState(fi, ST_L1_F3);
466 if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
467 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
468 }
469
470 static void
471 l1_deact_req_s(struct FsmInst *fi, int event, void *arg)
472 {
473 struct PStack *st = fi->userdata;
474
475 FsmChangeState(fi, ST_L1_F3);
476 FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
477 test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
478 }
479
480 static void
481 l1_power_up_s(struct FsmInst *fi, int event, void *arg)
482 {
483 struct PStack *st = fi->userdata;
484
485 if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags)) {
486 FsmChangeState(fi, ST_L1_F4);
487 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
488 FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
489 test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
490 } else
491 FsmChangeState(fi, ST_L1_F3);
492 }
493
494 static void
495 l1_go_F5(struct FsmInst *fi, int event, void *arg)
496 {
497 FsmChangeState(fi, ST_L1_F5);
498 }
499
500 static void
501 l1_go_F8(struct FsmInst *fi, int event, void *arg)
502 {
503 FsmChangeState(fi, ST_L1_F8);
504 }
505
506 static void
507 l1_info2_ind(struct FsmInst *fi, int event, void *arg)
508 {
509 struct PStack *st = fi->userdata;
510
511 #ifdef HISAX_UINTERFACE
512 if (test_bit(FLG_L1_UINT, &st->l1.Flags))
513 FsmChangeState(fi, ST_L1_SYNC2);
514 else
515 #endif
516 FsmChangeState(fi, ST_L1_F6);
517 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
518 }
519
520 static void
521 l1_info4_ind(struct FsmInst *fi, int event, void *arg)
522 {
523 struct PStack *st = fi->userdata;
524
525 #ifdef HISAX_UINTERFACE
526 if (test_bit(FLG_L1_UINT, &st->l1.Flags))
527 FsmChangeState(fi, ST_L1_TRANS);
528 else
529 #endif
530 FsmChangeState(fi, ST_L1_F7);
531 st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
532 if (test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags))
533 FsmDelTimer(&st->l1.timer, 4);
534 if (!test_bit(FLG_L1_ACTIVATED, &st->l1.Flags)) {
535 if (test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags))
536 FsmDelTimer(&st->l1.timer, 3);
537 FsmRestartTimer(&st->l1.timer, 110, EV_TIMER_ACT, NULL, 2);
538 test_and_set_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
539 }
540 }
541
542 static void
543 l1_timer3(struct FsmInst *fi, int event, void *arg)
544 {
545 struct PStack *st = fi->userdata;
546
547 test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags);
548 if (test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
549 L1deactivated(st->l1.hardware);
550
551 #ifdef HISAX_UINTERFACE
552 if (!test_bit(FLG_L1_UINT, &st->l1.Flags))
553 #endif
554 if (st->l1.l1m.state != ST_L1_F6) {
555 FsmChangeState(fi, ST_L1_F3);
556 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
557 }
558 }
559
560 static void
561 l1_timer_act(struct FsmInst *fi, int event, void *arg)
562 {
563 struct PStack *st = fi->userdata;
564
565 test_and_clear_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
566 test_and_set_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
567 L1activated(st->l1.hardware);
568 }
569
570 static void
571 l1_timer_deact(struct FsmInst *fi, int event, void *arg)
572 {
573 struct PStack *st = fi->userdata;
574
575 test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
576 test_and_clear_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
577 L1deactivated(st->l1.hardware);
578 st->l1.l1hw(st, HW_DEACTIVATE | RESPONSE, NULL);
579 }
580
581 static void
582 l1_activate_s(struct FsmInst *fi, int event, void *arg)
583 {
584 struct PStack *st = fi->userdata;
585
586 st->l1.l1hw(st, HW_RESET | REQUEST, NULL);
587 }
588
589 static void
590 l1_activate_no(struct FsmInst *fi, int event, void *arg)
591 {
592 struct PStack *st = fi->userdata;
593
594 if ((!test_bit(FLG_L1_DEACTTIMER, &st->l1.Flags)) && (!test_bit(FLG_L1_T3RUN, &st->l1.Flags))) {
595 test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
596 L1deactivated(st->l1.hardware);
597 }
598 }
599
600 static struct FsmNode L1SFnList[] __initdata =
601 {
602 {ST_L1_F3, EV_PH_ACTIVATE, l1_activate_s},
603 {ST_L1_F6, EV_PH_ACTIVATE, l1_activate_no},
604 {ST_L1_F8, EV_PH_ACTIVATE, l1_activate_no},
605 {ST_L1_F3, EV_RESET_IND, l1_reset},
606 {ST_L1_F4, EV_RESET_IND, l1_reset},
607 {ST_L1_F5, EV_RESET_IND, l1_reset},
608 {ST_L1_F6, EV_RESET_IND, l1_reset},
609 {ST_L1_F7, EV_RESET_IND, l1_reset},
610 {ST_L1_F8, EV_RESET_IND, l1_reset},
611 {ST_L1_F3, EV_DEACT_CNF, l1_deact_cnf},
612 {ST_L1_F4, EV_DEACT_CNF, l1_deact_cnf},
613 {ST_L1_F5, EV_DEACT_CNF, l1_deact_cnf},
614 {ST_L1_F6, EV_DEACT_CNF, l1_deact_cnf},
615 {ST_L1_F7, EV_DEACT_CNF, l1_deact_cnf},
616 {ST_L1_F8, EV_DEACT_CNF, l1_deact_cnf},
617 {ST_L1_F6, EV_DEACT_IND, l1_deact_req_s},
618 {ST_L1_F7, EV_DEACT_IND, l1_deact_req_s},
619 {ST_L1_F8, EV_DEACT_IND, l1_deact_req_s},
620 {ST_L1_F3, EV_POWER_UP, l1_power_up_s},
621 {ST_L1_F4, EV_RSYNC_IND, l1_go_F5},
622 {ST_L1_F6, EV_RSYNC_IND, l1_go_F8},
623 {ST_L1_F7, EV_RSYNC_IND, l1_go_F8},
624 {ST_L1_F3, EV_INFO2_IND, l1_info2_ind},
625 {ST_L1_F4, EV_INFO2_IND, l1_info2_ind},
626 {ST_L1_F5, EV_INFO2_IND, l1_info2_ind},
627 {ST_L1_F7, EV_INFO2_IND, l1_info2_ind},
628 {ST_L1_F8, EV_INFO2_IND, l1_info2_ind},
629 {ST_L1_F3, EV_INFO4_IND, l1_info4_ind},
630 {ST_L1_F4, EV_INFO4_IND, l1_info4_ind},
631 {ST_L1_F5, EV_INFO4_IND, l1_info4_ind},
632 {ST_L1_F6, EV_INFO4_IND, l1_info4_ind},
633 {ST_L1_F8, EV_INFO4_IND, l1_info4_ind},
634 {ST_L1_F3, EV_TIMER3, l1_timer3},
635 {ST_L1_F4, EV_TIMER3, l1_timer3},
636 {ST_L1_F5, EV_TIMER3, l1_timer3},
637 {ST_L1_F6, EV_TIMER3, l1_timer3},
638 {ST_L1_F8, EV_TIMER3, l1_timer3},
639 {ST_L1_F7, EV_TIMER_ACT, l1_timer_act},
640 {ST_L1_F3, EV_TIMER_DEACT, l1_timer_deact},
641 {ST_L1_F4, EV_TIMER_DEACT, l1_timer_deact},
642 {ST_L1_F5, EV_TIMER_DEACT, l1_timer_deact},
643 {ST_L1_F6, EV_TIMER_DEACT, l1_timer_deact},
644 {ST_L1_F7, EV_TIMER_DEACT, l1_timer_deact},
645 {ST_L1_F8, EV_TIMER_DEACT, l1_timer_deact},
646 };
647
648 #define L1S_FN_COUNT (sizeof(L1SFnList)/sizeof(struct FsmNode))
649
650 #ifdef HISAX_UINTERFACE
651 static void
652 l1_deact_req_u(struct FsmInst *fi, int event, void *arg)
653 {
654 struct PStack *st = fi->userdata;
655
656 FsmChangeState(fi, ST_L1_RESET);
657 FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
658 test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
659 st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
660 }
661
662 static void
663 l1_power_up_u(struct FsmInst *fi, int event, void *arg)
664 {
665 struct PStack *st = fi->userdata;
666
667 FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
668 test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
669 }
670
671 static void
672 l1_info0_ind(struct FsmInst *fi, int event, void *arg)
673 {
674 FsmChangeState(fi, ST_L1_DEACT);
675 }
676
677 static void
678 l1_activate_u(struct FsmInst *fi, int event, void *arg)
679 {
680 struct PStack *st = fi->userdata;
681
682 st->l1.l1hw(st, HW_INFO1 | REQUEST, NULL);
683 }
684
685 static struct FsmNode L1UFnList[] __initdata =
686 {
687 {ST_L1_RESET, EV_DEACT_IND, l1_deact_req_u},
688 {ST_L1_DEACT, EV_DEACT_IND, l1_deact_req_u},
689 {ST_L1_SYNC2, EV_DEACT_IND, l1_deact_req_u},
690 {ST_L1_TRANS, EV_DEACT_IND, l1_deact_req_u},
691 {ST_L1_DEACT, EV_PH_ACTIVATE, l1_activate_u},
692 {ST_L1_DEACT, EV_POWER_UP, l1_power_up_u},
693 {ST_L1_DEACT, EV_INFO2_IND, l1_info2_ind},
694 {ST_L1_TRANS, EV_INFO2_IND, l1_info2_ind},
695 {ST_L1_RESET, EV_DEACT_CNF, l1_info0_ind},
696 {ST_L1_DEACT, EV_INFO4_IND, l1_info4_ind},
697 {ST_L1_SYNC2, EV_INFO4_IND, l1_info4_ind},
698 {ST_L1_RESET, EV_INFO4_IND, l1_info4_ind},
699 {ST_L1_DEACT, EV_TIMER3, l1_timer3},
700 {ST_L1_SYNC2, EV_TIMER3, l1_timer3},
701 {ST_L1_TRANS, EV_TIMER_ACT, l1_timer_act},
702 {ST_L1_DEACT, EV_TIMER_DEACT, l1_timer_deact},
703 {ST_L1_SYNC2, EV_TIMER_DEACT, l1_timer_deact},
704 {ST_L1_RESET, EV_TIMER_DEACT, l1_timer_deact},
705 };
706
707 #define L1U_FN_COUNT (sizeof(L1UFnList)/sizeof(struct FsmNode))
708
709 #endif
710
711 static void
712 l1b_activate(struct FsmInst *fi, int event, void *arg)
713 {
714 struct PStack *st = fi->userdata;
715
716 FsmChangeState(fi, ST_L1_WAIT_ACT);
717 FsmRestartTimer(&st->l1.timer, st->l1.delay, EV_TIMER_ACT, NULL, 2);
718 }
719
720 static void
721 l1b_deactivate(struct FsmInst *fi, int event, void *arg)
722 {
723 struct PStack *st = fi->userdata;
724
725 FsmChangeState(fi, ST_L1_WAIT_DEACT);
726 FsmRestartTimer(&st->l1.timer, 10, EV_TIMER_DEACT, NULL, 2);
727 }
728
729 static void
730 l1b_timer_act(struct FsmInst *fi, int event, void *arg)
731 {
732 struct PStack *st = fi->userdata;
733
734 FsmChangeState(fi, ST_L1_ACTIV);
735 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
736 }
737
738 static void
739 l1b_timer_deact(struct FsmInst *fi, int event, void *arg)
740 {
741 struct PStack *st = fi->userdata;
742
743 FsmChangeState(fi, ST_L1_NULL);
744 st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
745 }
746
747 static struct FsmNode L1BFnList[] __initdata =
748 {
749 {ST_L1_NULL, EV_PH_ACTIVATE, l1b_activate},
750 {ST_L1_WAIT_ACT, EV_TIMER_ACT, l1b_timer_act},
751 {ST_L1_ACTIV, EV_PH_DEACTIVATE, l1b_deactivate},
752 {ST_L1_WAIT_DEACT, EV_TIMER_DEACT, l1b_timer_deact},
753 };
754
755 #define L1B_FN_COUNT (sizeof(L1BFnList)/sizeof(struct FsmNode))
756
757 int __init
758 Isdnl1New(void)
759 {
760 int retval;
761
762 l1fsm_s.state_count = L1S_STATE_COUNT;
763 l1fsm_s.event_count = L1_EVENT_COUNT;
764 l1fsm_s.strEvent = strL1Event;
765 l1fsm_s.strState = strL1SState;
766 retval = FsmNew(&l1fsm_s, L1SFnList, L1S_FN_COUNT);
767 if (retval)
768 return retval;
769
770 l1fsm_b.state_count = L1B_STATE_COUNT;
771 l1fsm_b.event_count = L1_EVENT_COUNT;
772 l1fsm_b.strEvent = strL1Event;
773 l1fsm_b.strState = strL1BState;
774 retval = FsmNew(&l1fsm_b, L1BFnList, L1B_FN_COUNT);
775 if (retval) {
776 FsmFree(&l1fsm_s);
777 return retval;
778 }
779 #ifdef HISAX_UINTERFACE
780 l1fsm_u.state_count = L1U_STATE_COUNT;
781 l1fsm_u.event_count = L1_EVENT_COUNT;
782 l1fsm_u.strEvent = strL1Event;
783 l1fsm_u.strState = strL1UState;
784 retval = FsmNew(&l1fsm_u, L1UFnList, L1U_FN_COUNT);
785 if (retval) {
786 FsmFree(&l1fsm_s);
787 FsmFree(&l1fsm_b);
788 return retval;
789 }
790 #endif
791 return 0;
792 }
793
794 void Isdnl1Free(void)
795 {
796 #ifdef HISAX_UINTERFACE
797 FsmFree(&l1fsm_u);
798 #endif
799 FsmFree(&l1fsm_s);
800 FsmFree(&l1fsm_b);
801 }
802
803 static void
804 dch_l2l1(struct PStack *st, int pr, void *arg)
805 {
806 struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
807
808 switch (pr) {
809 case (PH_DATA | REQUEST):
810 case (PH_PULL | REQUEST):
811 case (PH_PULL |INDICATION):
812 st->l1.l1hw(st, pr, arg);
813 break;
814 case (PH_ACTIVATE | REQUEST):
815 if (cs->debug)
816 debugl1(cs, "PH_ACTIVATE_REQ %s",
817 st->l1.l1m.fsm->strState[st->l1.l1m.state]);
818 if (test_bit(FLG_L1_ACTIVATED, &st->l1.Flags))
819 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
820 else {
821 test_and_set_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
822 FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, arg);
823 }
824 break;
825 case (PH_TESTLOOP | REQUEST):
826 if (1 & (long) arg)
827 debugl1(cs, "PH_TEST_LOOP B1");
828 if (2 & (long) arg)
829 debugl1(cs, "PH_TEST_LOOP B2");
830 if (!(3 & (long) arg))
831 debugl1(cs, "PH_TEST_LOOP DISABLED");
832 st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
833 break;
834 default:
835 if (cs->debug)
836 debugl1(cs, "dch_l2l1 msg %04X unhandled", pr);
837 break;
838 }
839 }
840
841 void
842 l1_msg(struct IsdnCardState *cs, int pr, void *arg) {
843 struct PStack *st;
844
845 st = cs->stlist;
846
847 while (st) {
848 switch(pr) {
849 case (HW_RESET | INDICATION):
850 FsmEvent(&st->l1.l1m, EV_RESET_IND, arg);
851 break;
852 case (HW_DEACTIVATE | CONFIRM):
853 FsmEvent(&st->l1.l1m, EV_DEACT_CNF, arg);
854 break;
855 case (HW_DEACTIVATE | INDICATION):
856 FsmEvent(&st->l1.l1m, EV_DEACT_IND, arg);
857 break;
858 case (HW_POWERUP | CONFIRM):
859 FsmEvent(&st->l1.l1m, EV_POWER_UP, arg);
860 break;
861 case (HW_RSYNC | INDICATION):
862 FsmEvent(&st->l1.l1m, EV_RSYNC_IND, arg);
863 break;
864 case (HW_INFO2 | INDICATION):
865 FsmEvent(&st->l1.l1m, EV_INFO2_IND, arg);
866 break;
867 case (HW_INFO4_P8 | INDICATION):
868 case (HW_INFO4_P10 | INDICATION):
869 FsmEvent(&st->l1.l1m, EV_INFO4_IND, arg);
870 break;
871 default:
872 if (cs->debug)
873 debugl1(cs, "l1msg %04X unhandled", pr);
874 break;
875 }
876 st = st->next;
877 }
878 }
879
880 void
881 l1_msg_b(struct PStack *st, int pr, void *arg) {
882 switch(pr) {
883 case (PH_ACTIVATE | REQUEST):
884 FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, NULL);
885 break;
886 case (PH_DEACTIVATE | REQUEST):
887 FsmEvent(&st->l1.l1m, EV_PH_DEACTIVATE, NULL);
888 break;
889 }
890 }
891
892 void
893 setstack_HiSax(struct PStack *st, struct IsdnCardState *cs)
894 {
895 st->l1.hardware = cs;
896 st->protocol = cs->protocol;
897 st->l1.l1m.fsm = &l1fsm_s;
898 st->l1.l1m.state = ST_L1_F3;
899 st->l1.Flags = 0;
900 #ifdef HISAX_UINTERFACE
901 if (test_bit(FLG_HW_L1_UINT, &cs->HW_Flags)) {
902 st->l1.l1m.fsm = &l1fsm_u;
903 st->l1.l1m.state = ST_L1_RESET;
904 st->l1.Flags = FLG_L1_UINT;
905 }
906 #endif
907 st->l1.l1m.debug = cs->debug;
908 st->l1.l1m.userdata = st;
909 st->l1.l1m.userint = 0;
910 st->l1.l1m.printdebug = l1m_debug;
911 FsmInitTimer(&st->l1.l1m, &st->l1.timer);
912 setstack_tei(st);
913 setstack_manager(st);
914 st->l1.stlistp = &(cs->stlist);
915 st->l2.l2l1 = dch_l2l1;
916 if (cs->setstack_d)
917 cs->setstack_d(st, cs);
918 }
919
920 void
921 setstack_l1_B(struct PStack *st)
922 {
923 struct IsdnCardState *cs = st->l1.hardware;
924
925 st->l1.l1m.fsm = &l1fsm_b;
926 st->l1.l1m.state = ST_L1_NULL;
927 st->l1.l1m.debug = cs->debug;
928 st->l1.l1m.userdata = st;
929 st->l1.l1m.userint = 0;
930 st->l1.l1m.printdebug = l1m_debug;
931 st->l1.Flags = 0;
932 FsmInitTimer(&st->l1.l1m, &st->l1.timer);
933 }
Linux with added FPC-III support