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