summaryrefslogtreecommitdiffstats
path: root/drivers/isdn/hysdn/hycapi.c
blob: 6bac43cc91bdb2b9284c6613c9a35a3cf96acb63 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
/* $Id: hycapi.c,v 1.8.6.4 2001/09/23 22:24:54 kai Exp $
 *
 * Linux driver for HYSDN cards, CAPI2.0-Interface.
 *
 * Author    Ulrich Albrecht <u.albrecht@hypercope.de> for Hypercope GmbH
 * Copyright 2000 by Hypercope GmbH
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#include <linux/module.h>
#include <linux/signal.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>

#define	VER_DRIVER	0
#define	VER_CARDTYPE	1
#define	VER_HWID	2
#define	VER_SERIAL	3
#define	VER_OPTION	4
#define	VER_PROTO	5
#define	VER_PROFILE	6
#define	VER_CAPI	7

#include "hysdn_defs.h"
#include <linux/kernelcapi.h>

static char hycapi_revision[]="$Revision: 1.8.6.4 $";

unsigned int hycapi_enable = 0xffffffff; 
module_param(hycapi_enable, uint, 0);

typedef struct _hycapi_appl {
	unsigned int ctrl_mask;
	capi_register_params rp;
	struct sk_buff *listen_req[CAPI_MAXCONTR];
} hycapi_appl;

static hycapi_appl hycapi_applications[CAPI_MAXAPPL];

static u16 hycapi_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);

static inline int _hycapi_appCheck(int app_id, int ctrl_no)
{
	if((ctrl_no <= 0) || (ctrl_no > CAPI_MAXCONTR) || (app_id <= 0) ||
	   (app_id > CAPI_MAXAPPL))
	{
		printk(KERN_ERR "HYCAPI: Invalid request app_id %d for controller %d", app_id, ctrl_no);
		return -1;
	}
	return ((hycapi_applications[app_id-1].ctrl_mask & (1 << (ctrl_no-1))) != 0);
}

/******************************
Kernel-Capi callback reset_ctr
******************************/     

static void
hycapi_reset_ctr(struct capi_ctr *ctrl)
{
	hycapictrl_info *cinfo = ctrl->driverdata;

#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "HYCAPI hycapi_reset_ctr\n");
#endif
	capilib_release(&cinfo->ncci_head);
	capi_ctr_reseted(ctrl);
}

/******************************
Kernel-Capi callback remove_ctr
******************************/     

static void
hycapi_remove_ctr(struct capi_ctr *ctrl)
{
	int i;
	hycapictrl_info *cinfo = NULL;
	hysdn_card *card = NULL;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "HYCAPI hycapi_remove_ctr\n");
#endif 
	cinfo = (hycapictrl_info *)(ctrl->driverdata);
	if(!cinfo) {
		printk(KERN_ERR "No hycapictrl_info set!");
		return;
	}    
	card = cinfo->card;
	capi_ctr_suspend_output(ctrl);
	for(i=0; i<CAPI_MAXAPPL;i++) {
		if(hycapi_applications[i].listen_req[ctrl->cnr-1]) {
			kfree_skb(hycapi_applications[i].listen_req[ctrl->cnr-1]);
			hycapi_applications[i].listen_req[ctrl->cnr-1] = NULL;
		}
	}
	detach_capi_ctr(ctrl);
	ctrl->driverdata = NULL;
	kfree(card->hyctrlinfo);

		
	card->hyctrlinfo = NULL;
}

/***********************************************************

Queue a CAPI-message to the controller.

***********************************************************/

static void
hycapi_sendmsg_internal(struct capi_ctr *ctrl, struct sk_buff *skb)
{
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
	hysdn_card *card = cinfo->card;

	spin_lock_irq(&cinfo->lock);
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_send_message\n");    
#endif
	cinfo->skbs[cinfo->in_idx++] = skb;	/* add to buffer list */
	if (cinfo->in_idx >= HYSDN_MAX_CAPI_SKB)
		cinfo->in_idx = 0;	/* wrap around */
	cinfo->sk_count++;		/* adjust counter */
	if (cinfo->sk_count >= HYSDN_MAX_CAPI_SKB) {
		/* inform upper layers we're full */
		printk(KERN_ERR "HYSDN Card%d: CAPI-buffer overrun!\n",
		       card->myid);	
		capi_ctr_suspend_output(ctrl);
	}
	cinfo->tx_skb = skb;
	spin_unlock_irq(&cinfo->lock);
	schedule_work(&card->irq_queue);
}

/***********************************************************
hycapi_register_internal

Send down the CAPI_REGISTER-Command to the controller.
This functions will also be used if the adapter has been rebooted to
re-register any applications in the private list.

************************************************************/

static void 
hycapi_register_internal(struct capi_ctr *ctrl, __u16 appl,
			 capi_register_params *rp)
{
	char ExtFeatureDefaults[] = "49  /0/0/0/0,*/1,*/2,*/3,*/4,*/5,*/6,*/7,*/8,*/9,*";
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
	hysdn_card *card = cinfo->card;
	struct sk_buff *skb;
	__u16 len;
	__u8 _command = 0xa0, _subcommand = 0x80;
	__u16 MessageNumber = 0x0000;
	__u16 MessageBufferSize = 0;
	int slen = strlen(ExtFeatureDefaults);
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_register_appl\n"); 
#endif
	MessageBufferSize = rp->level3cnt * rp->datablkcnt * rp->datablklen; 

	len = CAPI_MSG_BASELEN + 8 + slen + 1;
	if (!(skb = alloc_skb(len, GFP_ATOMIC))) {
		printk(KERN_ERR "HYSDN card%d: memory squeeze in hycapi_register_appl\n",
		       card->myid);
		return;
	}
	memcpy(skb_put(skb,sizeof(__u16)), &len, sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u16)), &appl, sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u8)), &_command, sizeof(_command));
	memcpy(skb_put(skb,sizeof(__u8)), &_subcommand, sizeof(_subcommand));
	memcpy(skb_put(skb,sizeof(__u16)), &MessageNumber, sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u16)), &MessageBufferSize, sizeof(__u16)); 
	memcpy(skb_put(skb,sizeof(__u16)), &(rp->level3cnt), sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u16)), &(rp->datablkcnt), sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u16)), &(rp->datablklen), sizeof(__u16));
	memcpy(skb_put(skb,slen), ExtFeatureDefaults, slen);
	hycapi_applications[appl-1].ctrl_mask |= (1 << (ctrl->cnr-1));    
	hycapi_send_message(ctrl, skb);    
}

/************************************************************
hycapi_restart_internal

After an adapter has been rebootet, re-register all applications and
send a LISTEN_REQ (if there has been such a thing )

*************************************************************/

static void hycapi_restart_internal(struct capi_ctr *ctrl)
{
	int i;
	struct sk_buff *skb;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_WARNING "HYSDN: hycapi_restart_internal");
#endif
	for(i=0; i<CAPI_MAXAPPL; i++) {
		if(_hycapi_appCheck(i+1, ctrl->cnr) == 1) {
			hycapi_register_internal(ctrl, i+1, 
						 &hycapi_applications[i].rp);
			if(hycapi_applications[i].listen_req[ctrl->cnr-1]) {
				skb = skb_copy(hycapi_applications[i].listen_req[ctrl->cnr-1], GFP_ATOMIC);
				hycapi_sendmsg_internal(ctrl, skb);
			}
		}
	}
}

/*************************************************************
Register an application.
Error-checking is done for CAPI-compliance.

The application is recorded in the internal list.
*************************************************************/

static void
hycapi_register_appl(struct capi_ctr *ctrl, __u16 appl, 
		     capi_register_params *rp)
{
	int MaxLogicalConnections = 0, MaxBDataBlocks = 0, MaxBDataLen = 0;
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
	hysdn_card *card = cinfo->card;
	int chk = _hycapi_appCheck(appl, ctrl->cnr);
	if(chk < 0) {
		return;
	}
	if(chk == 1) {
		printk(KERN_INFO "HYSDN: apl %d already registered\n", appl);
		return;
	}
	MaxBDataBlocks = rp->datablkcnt > CAPI_MAXDATAWINDOW ? CAPI_MAXDATAWINDOW : rp->datablkcnt;
	rp->datablkcnt = MaxBDataBlocks;
	MaxBDataLen = rp->datablklen < 1024 ? 1024 : rp->datablklen ;
	rp->datablklen = MaxBDataLen;
	
	MaxLogicalConnections = rp->level3cnt;
	if (MaxLogicalConnections < 0) {
		MaxLogicalConnections = card->bchans * -MaxLogicalConnections; 
	}
	if (MaxLogicalConnections == 0) {
		MaxLogicalConnections = card->bchans;
	}
	
	rp->level3cnt = MaxLogicalConnections;
	memcpy(&hycapi_applications[appl-1].rp, 
	       rp, sizeof(capi_register_params));
}

/*********************************************************************

hycapi_release_internal

Send down a CAPI_RELEASE to the controller.
*********************************************************************/

static void hycapi_release_internal(struct capi_ctr *ctrl, __u16 appl)
{
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
	hysdn_card *card = cinfo->card;
	struct sk_buff *skb;
	__u16 len;
	__u8 _command = 0xa1, _subcommand = 0x80;
	__u16 MessageNumber = 0x0000;

	capilib_release_appl(&cinfo->ncci_head, appl);

#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_release_appl\n");
#endif
	len = CAPI_MSG_BASELEN;
	if (!(skb = alloc_skb(len, GFP_ATOMIC))) {
		printk(KERN_ERR "HYSDN card%d: memory squeeze in hycapi_register_appl\n",
		       card->myid);
		return;
	}
	memcpy(skb_put(skb,sizeof(__u16)), &len, sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u16)), &appl, sizeof(__u16));
	memcpy(skb_put(skb,sizeof(__u8)), &_command, sizeof(_command));
	memcpy(skb_put(skb,sizeof(__u8)), &_subcommand, sizeof(_subcommand));
	memcpy(skb_put(skb,sizeof(__u16)), &MessageNumber, sizeof(__u16));    
	hycapi_send_message(ctrl, skb);    
	hycapi_applications[appl-1].ctrl_mask &= ~(1 << (ctrl->cnr-1));    
}

/******************************************************************
hycapi_release_appl

Release the application from the internal list an remove it's 
registration at controller-level
******************************************************************/

static void
hycapi_release_appl(struct capi_ctr *ctrl, __u16 appl)
{
	int chk;

	chk = _hycapi_appCheck(appl, ctrl->cnr);
	if(chk<0) {
		printk(KERN_ERR "HYCAPI: Releasing invalid appl %d on controller %d\n", appl, ctrl->cnr);
		return;
	}
	if(hycapi_applications[appl-1].listen_req[ctrl->cnr-1]) {
		kfree_skb(hycapi_applications[appl-1].listen_req[ctrl->cnr-1]);
		hycapi_applications[appl-1].listen_req[ctrl->cnr-1] = NULL;
	}
	if(chk == 1)
	{
		hycapi_release_internal(ctrl, appl);
	}
}


/**************************************************************
Kill a single controller.
**************************************************************/

int hycapi_capi_release(hysdn_card *card)
{
	hycapictrl_info *cinfo = card->hyctrlinfo;
	struct capi_ctr *ctrl;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_capi_release\n");
#endif
	if(cinfo) {
		ctrl = &cinfo->capi_ctrl;
		hycapi_remove_ctr(ctrl);
	}
	return 0;
}

/**************************************************************
hycapi_capi_stop

Stop CAPI-Output on a card. (e.g. during reboot)
***************************************************************/

int hycapi_capi_stop(hysdn_card *card)
{
	hycapictrl_info *cinfo = card->hyctrlinfo;
	struct capi_ctr *ctrl;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_capi_stop\n");
#endif
	if(cinfo) {
		ctrl = &cinfo->capi_ctrl;
/*		ctrl->suspend_output(ctrl); */
		capi_ctr_reseted(ctrl);
	}
	return 0;
}

/***************************************************************
hycapi_send_message

Send a message to the controller.

Messages are parsed for their Command/Subcommand-type, and appropriate
action's are performed.

Note that we have to muck around with a 64Bit-DATA_REQ as there are
firmware-releases that do not check the MsgLen-Indication!

***************************************************************/

static u16 hycapi_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
{
	__u16 appl_id;
	int _len, _len2;
	__u8 msghead[64];
	hycapictrl_info *cinfo = ctrl->driverdata;
	u16 retval = CAPI_NOERROR;

	appl_id = CAPIMSG_APPID(skb->data);
	switch(_hycapi_appCheck(appl_id, ctrl->cnr))
	{
		case 0:
/*			printk(KERN_INFO "Need to register\n"); */
			hycapi_register_internal(ctrl, 
						 appl_id,
						 &(hycapi_applications[appl_id-1].rp));
			break;
		case 1:
			break;
		default:
			printk(KERN_ERR "HYCAPI: Controller mixup!\n");
			retval = CAPI_ILLAPPNR;
			goto out;
	}
	switch(CAPIMSG_CMD(skb->data)) {		
		case CAPI_DISCONNECT_B3_RESP:
			capilib_free_ncci(&cinfo->ncci_head, appl_id, 
					  CAPIMSG_NCCI(skb->data));
			break;
		case CAPI_DATA_B3_REQ:
			_len = CAPIMSG_LEN(skb->data);
			if (_len > 22) {
				_len2 = _len - 22;
				memcpy(msghead, skb->data, 22);
				memcpy(skb->data + _len2, msghead, 22);
				skb_pull(skb, _len2);
				CAPIMSG_SETLEN(skb->data, 22);
				retval = capilib_data_b3_req(&cinfo->ncci_head,
							     CAPIMSG_APPID(skb->data),
							     CAPIMSG_NCCI(skb->data),
							     CAPIMSG_MSGID(skb->data));
			}
			break;
		case CAPI_LISTEN_REQ:
			if(hycapi_applications[appl_id-1].listen_req[ctrl->cnr-1])
			{
				kfree_skb(hycapi_applications[appl_id-1].listen_req[ctrl->cnr-1]);
				hycapi_applications[appl_id-1].listen_req[ctrl->cnr-1] = NULL;
			}
			if (!(hycapi_applications[appl_id-1].listen_req[ctrl->cnr-1] = skb_copy(skb, GFP_ATOMIC))) 
			{
				printk(KERN_ERR "HYSDN: memory squeeze in private_listen\n");
			} 
			break;
		default:
			break;
	}
 out:
	if (retval == CAPI_NOERROR)
		hycapi_sendmsg_internal(ctrl, skb);
	else 
		dev_kfree_skb_any(skb);

	return retval;
}

/*********************************************************************
hycapi_read_proc

Informations provided in the /proc/capi-entries.

*********************************************************************/

static int hycapi_read_proc(char *page, char **start, off_t off,
			    int count, int *eof, struct capi_ctr *ctrl)
{
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
	hysdn_card *card = cinfo->card;
	int len = 0;
	char *s;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_read_proc\n");    
#endif
	len += sprintf(page+len, "%-16s %s\n", "name", cinfo->cardname);
	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->iobase);
	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
    
	switch (card->brdtype) {
		case BD_PCCARD:  s = "HYSDN Hycard"; break;
		case BD_ERGO: s = "HYSDN Ergo2"; break;
		case BD_METRO: s = "HYSDN Metro4"; break;
		case BD_CHAMP2: s = "HYSDN Champ2";	break;
		case BD_PLEXUS: s = "HYSDN Plexus30"; break;
		default: s = "???"; break;
	}
	len += sprintf(page+len, "%-16s %s\n", "type", s);
	if ((s = cinfo->version[VER_DRIVER]) != 0)
		len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
	if ((s = cinfo->version[VER_CARDTYPE]) != 0)
		len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
	if ((s = cinfo->version[VER_SERIAL]) != 0)
		len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
    
	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
    
	if (off+count >= len)
		*eof = 1;
	if (len < off)
		return 0;
	*start = page + off;
	return ((count < len-off) ? count : len-off);
}

/**************************************************************
hycapi_load_firmware

This does NOT load any firmware, but the callback somehow is needed
on capi-interface registration.

**************************************************************/

static int hycapi_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
{
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_load_firmware\n");    
#endif
	return 0;
}


static char *hycapi_procinfo(struct capi_ctr *ctrl)
{
	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_proc_info\n");    
#endif
	if (!cinfo)
		return "";
	sprintf(cinfo->infobuf, "%s %s 0x%x %d %s",
		cinfo->cardname[0] ? cinfo->cardname : "-",
		cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
		cinfo->card ? cinfo->card->iobase : 0x0,
		cinfo->card ? cinfo->card->irq : 0,
		hycapi_revision
		);
	return cinfo->infobuf;
}

/******************************************************************
hycapi_rx_capipkt

Receive a capi-message.

All B3_DATA_IND are converted to 64K-extension compatible format.
New nccis are created if necessary.
*******************************************************************/

void
hycapi_rx_capipkt(hysdn_card * card, unsigned char *buf, unsigned short len)
{
	struct sk_buff *skb;
	hycapictrl_info *cinfo = card->hyctrlinfo;
	struct capi_ctr *ctrl;
	__u16 ApplId;
	__u16 MsgLen, info;
	__u16 len2, CapiCmd;
	__u32 CP64[2] = {0,0};
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_rx_capipkt\n");    
#endif
	if(!cinfo) {
		return;
	}
	ctrl = &cinfo->capi_ctrl;
	if(len < CAPI_MSG_BASELEN) {
		printk(KERN_ERR "HYSDN Card%d: invalid CAPI-message, lenght %d!\n",
		       card->myid, len);
		return;
	}	
	MsgLen = CAPIMSG_LEN(buf);
	ApplId = CAPIMSG_APPID(buf);
	CapiCmd = CAPIMSG_CMD(buf);
	
	if((CapiCmd == CAPI_DATA_B3_IND) && (MsgLen < 30)) {
		len2 = len + (30 - MsgLen);
		if (!(skb = alloc_skb(len2, GFP_ATOMIC))) {
			printk(KERN_ERR "HYSDN Card%d: incoming packet dropped\n",
			       card->myid);
			return;
		}
		memcpy(skb_put(skb, MsgLen), buf, MsgLen);
		memcpy(skb_put(skb, 2*sizeof(__u32)), CP64, 2* sizeof(__u32));
		memcpy(skb_put(skb, len - MsgLen), buf + MsgLen,
		       len - MsgLen);
		CAPIMSG_SETLEN(skb->data, 30);
	} else {
		if (!(skb = alloc_skb(len, GFP_ATOMIC))) {
			printk(KERN_ERR "HYSDN Card%d: incoming packet dropped\n",
			       card->myid);
			return;
		}
		memcpy(skb_put(skb, len), buf, len);
	}
	switch(CAPIMSG_CMD(skb->data)) 
	{
		case CAPI_CONNECT_B3_CONF:
/* Check info-field for error-indication: */
			info = CAPIMSG_U16(skb->data, 12);
			switch(info)
			{
				case 0:
					capilib_new_ncci(&cinfo->ncci_head, ApplId, CAPIMSG_NCCI(skb->data), 
							 hycapi_applications[ApplId-1].rp.datablkcnt); 
					
					break;
				case 0x0001:
					printk(KERN_ERR "HYSDN Card%d: NCPI not supported by current "
					       "protocol. NCPI ignored.\n", card->myid);
					break;
				case 0x2001:
					printk(KERN_ERR "HYSDN Card%d: Message not supported in"
					       " current state\n", card->myid);
					break;
				case 0x2002:
					printk(KERN_ERR "HYSDN Card%d: invalid PLCI\n", card->myid);
					break;		
				case 0x2004:
					printk(KERN_ERR "HYSDN Card%d: out of NCCI\n", card->myid);
					break;				
				case 0x3008:
					printk(KERN_ERR "HYSDN Card%d: NCPI not supported\n", 
					       card->myid);
					break;	
				default:
					printk(KERN_ERR "HYSDN Card%d: Info in CONNECT_B3_CONF: %d\n", 
					       card->myid, info);
					break;			
			}
			break;
		case CAPI_CONNECT_B3_IND:
			capilib_new_ncci(&cinfo->ncci_head, ApplId, 
					 CAPIMSG_NCCI(skb->data), 
					 hycapi_applications[ApplId-1].rp.datablkcnt);
			break;
	        case CAPI_DATA_B3_CONF:
			capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
					     CAPIMSG_NCCI(skb->data),
					     CAPIMSG_MSGID(skb->data));
			break;
		default:
			break;
	}
	capi_ctr_handle_message(ctrl, ApplId, skb);
}

/******************************************************************
hycapi_tx_capiack

Internally acknowledge a msg sent. This will remove the msg from the
internal queue.

*******************************************************************/

void hycapi_tx_capiack(hysdn_card * card)
{
	hycapictrl_info *cinfo = card->hyctrlinfo;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_tx_capiack\n");    
#endif
	if(!cinfo) {
		return;
	}
	spin_lock_irq(&cinfo->lock);
	kfree_skb(cinfo->skbs[cinfo->out_idx]);		/* free skb */
	cinfo->skbs[cinfo->out_idx++] = NULL;
	if (cinfo->out_idx >= HYSDN_MAX_CAPI_SKB)
		cinfo->out_idx = 0;	/* wrap around */

	if (cinfo->sk_count-- == HYSDN_MAX_CAPI_SKB)	/* dec usage count */
		capi_ctr_resume_output(&cinfo->capi_ctrl);
	spin_unlock_irq(&cinfo->lock);
}

/***************************************************************
hycapi_tx_capiget(hysdn_card *card)

This is called when polling for messages to SEND.

****************************************************************/

struct sk_buff *
hycapi_tx_capiget(hysdn_card *card)
{
	hycapictrl_info *cinfo = card->hyctrlinfo;
	if(!cinfo) {
		return (struct sk_buff *)NULL;
	}
	if (!cinfo->sk_count)
		return (struct sk_buff *)NULL;	/* nothing available */

	return (cinfo->skbs[cinfo->out_idx]);		/* next packet to send */
}


/**********************************************************
int hycapi_init()

attach the capi-driver to the kernel-capi.

***********************************************************/

int hycapi_init(void)
{
	int i;
	for(i=0;i<CAPI_MAXAPPL;i++) {
		memset(&(hycapi_applications[i]), 0, sizeof(hycapi_appl));
	}
	return(0);
}

/**************************************************************
hycapi_cleanup(void)

detach the capi-driver to the kernel-capi. Actually this should
free some more ressources. Do that later.
**************************************************************/

void 
hycapi_cleanup(void)
{
}

/********************************************************************
hycapi_capi_create(hysdn_card *card)

Attach the card with its capi-ctrl.
*********************************************************************/

static void hycapi_fill_profile(hysdn_card *card)
{
	hycapictrl_info *cinfo = NULL;
	struct capi_ctr *ctrl = NULL;
	cinfo = card->hyctrlinfo;
	if(!cinfo) return;
	ctrl = &cinfo->capi_ctrl;
	strcpy(ctrl->manu, "Hypercope");	
	ctrl->version.majorversion = 2;
	ctrl->version.minorversion = 0;
	ctrl->version.majormanuversion = 3;
	ctrl->version.minormanuversion = 2;
	ctrl->profile.ncontroller = card->myid;
	ctrl->profile.nbchannel = card->bchans;
	ctrl->profile.goptions = GLOBAL_OPTION_INTERNAL_CONTROLLER |
		GLOBAL_OPTION_B_CHANNEL_OPERATION;
	ctrl->profile.support1 =  B1_PROT_64KBIT_HDLC |
		(card->faxchans ? B1_PROT_T30 : 0) |
		B1_PROT_64KBIT_TRANSPARENT;
	ctrl->profile.support2 = B2_PROT_ISO7776 |
		(card->faxchans ? B2_PROT_T30 : 0) |
		B2_PROT_TRANSPARENT;
	ctrl->profile.support3 = B3_PROT_TRANSPARENT |
		B3_PROT_T90NL |
		(card->faxchans ? B3_PROT_T30 : 0) |
		(card->faxchans ? B3_PROT_T30EXT : 0) |
		B3_PROT_ISO8208;
}	

int 
hycapi_capi_create(hysdn_card *card)
{
	hycapictrl_info *cinfo = NULL;
	struct capi_ctr *ctrl = NULL;
	int retval;
#ifdef HYCAPI_PRINTFNAMES
	printk(KERN_NOTICE "hycapi_capi_create\n");        
#endif
	if((hycapi_enable & (1 << card->myid)) == 0) {
		return 1;
	}
	if (!card->hyctrlinfo) {
		cinfo = (hycapictrl_info *) kmalloc(sizeof(hycapictrl_info), GFP_ATOMIC);
		if (!cinfo) {
			printk(KERN_WARNING "HYSDN: no memory for capi-ctrl.\n");
			return -ENOMEM;
		}
		memset(cinfo, 0, sizeof(hycapictrl_info));
		card->hyctrlinfo = cinfo;
		cinfo->card = card;
		spin_lock_init(&cinfo->lock);
		INIT_LIST_HEAD(&cinfo->ncci_head);

		switch (card->brdtype) {
			case BD_PCCARD:  strcpy(cinfo->cardname,"HYSDN Hycard"); break;
			case BD_ERGO: strcpy(cinfo->cardname,"HYSDN Ergo2"); break;
			case BD_METRO: strcpy(cinfo->cardname,"HYSDN Metro4"); break;
			case BD_CHAMP2: strcpy(cinfo->cardname,"HYSDN Champ2"); break;
			case BD_PLEXUS: strcpy(cinfo->cardname,"HYSDN Plexus30"); break;
			default: strcpy(cinfo->cardname,"HYSDN ???"); break;
		}

		ctrl = &cinfo->capi_ctrl;
		ctrl->driver_name   = "hycapi";
		ctrl->driverdata    = cinfo;
		ctrl->register_appl = hycapi_register_appl;
		ctrl->release_appl  = hycapi_release_appl;
		ctrl->send_message  = hycapi_send_message;
		ctrl->load_firmware = hycapi_load_firmware;
		ctrl->reset_ctr     = hycapi_reset_ctr;
		ctrl->procinfo      = hycapi_procinfo;
		ctrl->ctr_read_proc = hycapi_read_proc;
		strcpy(ctrl->name, cinfo->cardname);
		ctrl->owner = THIS_MODULE;

		retval = attach_capi_ctr(ctrl);
		if (retval) {
			printk(KERN_ERR "hycapi: attach controller failed.\n");
			return -EBUSY;
		}
		/* fill in the blanks: */
		hycapi_fill_profile(card);
		capi_ctr_ready(ctrl);
	} else {
		/* resume output on stopped ctrl */
		ctrl = &card->hyctrlinfo->capi_ctrl;
		hycapi_fill_profile(card);
		capi_ctr_ready(ctrl);
		hycapi_restart_internal(ctrl); 
/*		ctrl->resume_output(ctrl); */
	}
	return 0;
}