Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * PCBIT-D interface with isdn4linux | |
3 | * | |
4 | * Copyright (C) 1996 Universidade de Lisboa | |
5 | * | |
6 | * Written by Pedro Roque Marques (roque@di.fc.ul.pt) | |
7 | * | |
8 | * This software may be used and distributed according to the terms of | |
9 | * the GNU General Public License, incorporated herein by reference. | |
10 | */ | |
11 | ||
12 | /* | |
13 | * Fixes: | |
14 | * | |
15 | * Nuno Grilo <l38486@alfa.ist.utl.pt> | |
16 | * fixed msn_list NULL pointer dereference. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | ||
22 | #include <linux/sched.h> | |
23 | ||
24 | #include <linux/kernel.h> | |
25 | ||
26 | #include <linux/types.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/interrupt.h> | |
30 | #include <linux/string.h> | |
31 | #include <linux/skbuff.h> | |
32 | ||
33 | #include <linux/isdnif.h> | |
34 | #include <asm/string.h> | |
35 | #include <asm/io.h> | |
36 | #include <linux/ioport.h> | |
37 | ||
38 | #include "pcbit.h" | |
39 | #include "edss1.h" | |
40 | #include "layer2.h" | |
41 | #include "capi.h" | |
42 | ||
43 | ||
44 | extern ushort last_ref_num; | |
45 | ||
46 | static int pcbit_ioctl(isdn_ctrl* ctl); | |
47 | ||
48 | static char* pcbit_devname[MAX_PCBIT_CARDS] = { | |
49 | "pcbit0", | |
50 | "pcbit1", | |
51 | "pcbit2", | |
52 | "pcbit3" | |
53 | }; | |
54 | ||
55 | /* | |
56 | * prototypes | |
57 | */ | |
58 | ||
886cca3a AB |
59 | static int pcbit_command(isdn_ctrl* ctl); |
60 | static int pcbit_stat(u_char __user * buf, int len, int, int); | |
61 | static int pcbit_xmit(int driver, int chan, int ack, struct sk_buff *skb); | |
62 | static int pcbit_writecmd(const u_char __user *, int, int, int); | |
1da177e4 LT |
63 | |
64 | static int set_protocol_running(struct pcbit_dev * dev); | |
65 | ||
66 | static void pcbit_clear_msn(struct pcbit_dev *dev); | |
67 | static void pcbit_set_msn(struct pcbit_dev *dev, char *list); | |
68 | static int pcbit_check_msn(struct pcbit_dev *dev, char *msn); | |
69 | ||
70 | ||
71 | extern void pcbit_deliver(void * data); | |
72 | ||
73 | int pcbit_init_dev(int board, int mem_base, int irq) | |
74 | { | |
75 | struct pcbit_dev *dev; | |
76 | isdn_if *dev_if; | |
77 | ||
78 | if ((dev=kmalloc(sizeof(struct pcbit_dev), GFP_KERNEL)) == NULL) | |
79 | { | |
80 | printk("pcbit_init: couldn't malloc pcbit_dev struct\n"); | |
81 | return -ENOMEM; | |
82 | } | |
83 | ||
84 | dev_pcbit[board] = dev; | |
85 | memset(dev, 0, sizeof(struct pcbit_dev)); | |
86 | init_waitqueue_head(&dev->set_running_wq); | |
87 | spin_lock_init(&dev->lock); | |
88 | ||
89 | if (mem_base >= 0xA0000 && mem_base <= 0xFFFFF ) { | |
90 | dev->ph_mem = mem_base; | |
91 | if (!request_mem_region(dev->ph_mem, 4096, "PCBIT mem")) { | |
92 | printk(KERN_WARNING | |
93 | "PCBIT: memory region %lx-%lx already in use\n", | |
94 | dev->ph_mem, dev->ph_mem + 4096); | |
95 | kfree(dev); | |
96 | dev_pcbit[board] = NULL; | |
97 | return -EACCES; | |
98 | } | |
99 | dev->sh_mem = ioremap(dev->ph_mem, 4096); | |
100 | } | |
101 | else | |
102 | { | |
103 | printk("memory address invalid"); | |
104 | kfree(dev); | |
105 | dev_pcbit[board] = NULL; | |
106 | return -EACCES; | |
107 | } | |
108 | ||
109 | dev->b1 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL); | |
110 | if (!dev->b1) { | |
111 | printk("pcbit_init: couldn't malloc pcbit_chan struct\n"); | |
112 | iounmap(dev->sh_mem); | |
113 | release_mem_region(dev->ph_mem, 4096); | |
114 | kfree(dev); | |
115 | return -ENOMEM; | |
116 | } | |
117 | ||
118 | dev->b2 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL); | |
119 | if (!dev->b2) { | |
120 | printk("pcbit_init: couldn't malloc pcbit_chan struct\n"); | |
121 | kfree(dev->b1); | |
122 | iounmap(dev->sh_mem); | |
123 | release_mem_region(dev->ph_mem, 4096); | |
124 | kfree(dev); | |
125 | return -ENOMEM; | |
126 | } | |
127 | ||
128 | memset(dev->b1, 0, sizeof(struct pcbit_chan)); | |
129 | memset(dev->b2, 0, sizeof(struct pcbit_chan)); | |
130 | dev->b2->id = 1; | |
131 | ||
132 | INIT_WORK(&dev->qdelivery, pcbit_deliver, dev); | |
133 | ||
134 | /* | |
135 | * interrupts | |
136 | */ | |
137 | ||
138 | if (request_irq(irq, &pcbit_irq_handler, 0, pcbit_devname[board], dev) != 0) | |
139 | { | |
140 | kfree(dev->b1); | |
141 | kfree(dev->b2); | |
142 | iounmap(dev->sh_mem); | |
143 | release_mem_region(dev->ph_mem, 4096); | |
144 | kfree(dev); | |
145 | dev_pcbit[board] = NULL; | |
146 | return -EIO; | |
147 | } | |
148 | ||
149 | dev->irq = irq; | |
150 | ||
151 | /* next frame to be received */ | |
152 | dev->rcv_seq = 0; | |
153 | dev->send_seq = 0; | |
154 | dev->unack_seq = 0; | |
155 | ||
156 | dev->hl_hdrlen = 16; | |
157 | ||
158 | dev_if = kmalloc(sizeof(isdn_if), GFP_KERNEL); | |
159 | ||
160 | if (!dev_if) { | |
161 | free_irq(irq, dev); | |
162 | kfree(dev->b1); | |
163 | kfree(dev->b2); | |
164 | iounmap(dev->sh_mem); | |
165 | release_mem_region(dev->ph_mem, 4096); | |
166 | kfree(dev); | |
167 | dev_pcbit[board] = NULL; | |
168 | return -EIO; | |
169 | } | |
170 | ||
171 | dev->dev_if = dev_if; | |
172 | ||
173 | dev_if->owner = THIS_MODULE; | |
174 | ||
175 | dev_if->channels = 2; | |
176 | ||
177 | dev_if->features = (ISDN_FEATURE_P_EURO | ISDN_FEATURE_L3_TRANS | | |
178 | ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L2_TRANS ); | |
179 | ||
180 | dev_if->writebuf_skb = pcbit_xmit; | |
181 | dev_if->hl_hdrlen = 16; | |
182 | ||
183 | dev_if->maxbufsize = MAXBUFSIZE; | |
184 | dev_if->command = pcbit_command; | |
185 | ||
186 | dev_if->writecmd = pcbit_writecmd; | |
187 | dev_if->readstat = pcbit_stat; | |
188 | ||
189 | ||
190 | strcpy(dev_if->id, pcbit_devname[board]); | |
191 | ||
192 | if (!register_isdn(dev_if)) { | |
193 | free_irq(irq, dev); | |
194 | kfree(dev->b1); | |
195 | kfree(dev->b2); | |
196 | iounmap(dev->sh_mem); | |
197 | release_mem_region(dev->ph_mem, 4096); | |
198 | kfree(dev); | |
199 | dev_pcbit[board] = NULL; | |
200 | return -EIO; | |
201 | } | |
202 | ||
203 | dev->id = dev_if->channels; | |
204 | ||
205 | ||
206 | dev->l2_state = L2_DOWN; | |
207 | dev->free = 511; | |
208 | ||
209 | /* | |
210 | * set_protocol_running(dev); | |
211 | */ | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | #ifdef MODULE | |
217 | void pcbit_terminate(int board) | |
218 | { | |
219 | struct pcbit_dev * dev; | |
220 | ||
221 | dev = dev_pcbit[board]; | |
222 | ||
223 | if (dev) { | |
224 | /* unregister_isdn(dev->dev_if); */ | |
225 | free_irq(dev->irq, dev); | |
226 | pcbit_clear_msn(dev); | |
227 | kfree(dev->dev_if); | |
228 | if (dev->b1->fsm_timer.function) | |
229 | del_timer(&dev->b1->fsm_timer); | |
230 | if (dev->b2->fsm_timer.function) | |
231 | del_timer(&dev->b2->fsm_timer); | |
232 | kfree(dev->b1); | |
233 | kfree(dev->b2); | |
234 | iounmap(dev->sh_mem); | |
235 | release_mem_region(dev->ph_mem, 4096); | |
236 | kfree(dev); | |
237 | } | |
238 | } | |
239 | #endif | |
240 | ||
886cca3a | 241 | static int pcbit_command(isdn_ctrl* ctl) |
1da177e4 LT |
242 | { |
243 | struct pcbit_dev *dev; | |
244 | struct pcbit_chan *chan; | |
245 | struct callb_data info; | |
246 | ||
247 | dev = finddev(ctl->driver); | |
248 | ||
249 | if (!dev) | |
250 | { | |
251 | printk("pcbit_command: unknown device\n"); | |
252 | return -1; | |
253 | } | |
254 | ||
255 | chan = (ctl->arg & 0x0F) ? dev->b2 : dev->b1; | |
256 | ||
257 | ||
258 | switch(ctl->command) { | |
259 | case ISDN_CMD_IOCTL: | |
260 | return pcbit_ioctl(ctl); | |
261 | break; | |
262 | case ISDN_CMD_DIAL: | |
263 | info.type = EV_USR_SETUP_REQ; | |
264 | info.data.setup.CalledPN = (char *) &ctl->parm.setup.phone; | |
265 | pcbit_fsm_event(dev, chan, EV_USR_SETUP_REQ, &info); | |
266 | break; | |
267 | case ISDN_CMD_ACCEPTD: | |
268 | pcbit_fsm_event(dev, chan, EV_USR_SETUP_RESP, NULL); | |
269 | break; | |
270 | case ISDN_CMD_ACCEPTB: | |
271 | printk("ISDN_CMD_ACCEPTB - not really needed\n"); | |
272 | break; | |
273 | case ISDN_CMD_HANGUP: | |
274 | pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL); | |
275 | break; | |
276 | case ISDN_CMD_SETL2: | |
277 | chan->proto = (ctl->arg >> 8); | |
278 | break; | |
279 | case ISDN_CMD_CLREAZ: | |
280 | pcbit_clear_msn(dev); | |
281 | break; | |
282 | case ISDN_CMD_SETEAZ: | |
283 | pcbit_set_msn(dev, ctl->parm.num); | |
284 | break; | |
285 | case ISDN_CMD_SETL3: | |
286 | if ((ctl->arg >> 8) != ISDN_PROTO_L3_TRANS) | |
287 | printk(KERN_DEBUG "L3 protocol unknown\n"); | |
288 | break; | |
289 | default: | |
290 | printk(KERN_DEBUG "pcbit_command: unknown command\n"); | |
291 | break; | |
292 | }; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Another Hack :-( | |
299 | * on some conditions the board stops sending TDATA_CONFs | |
300 | * let's see if we can turn around the problem | |
301 | */ | |
302 | ||
303 | #ifdef BLOCK_TIMER | |
304 | static void pcbit_block_timer(unsigned long data) | |
305 | { | |
306 | struct pcbit_chan *chan; | |
307 | struct pcbit_dev * dev; | |
308 | isdn_ctrl ictl; | |
309 | ||
310 | chan = (struct pcbit_chan *) data; | |
311 | ||
312 | dev = chan2dev(chan); | |
313 | ||
314 | if (dev == NULL) { | |
315 | printk(KERN_DEBUG "pcbit: chan2dev failed\n"); | |
316 | return; | |
317 | } | |
318 | ||
319 | del_timer(&chan->block_timer); | |
320 | chan->block_timer.function = NULL; | |
321 | ||
322 | #ifdef DEBUG | |
323 | printk(KERN_DEBUG "pcbit_block_timer\n"); | |
324 | #endif | |
325 | chan->queued = 0; | |
326 | ictl.driver = dev->id; | |
327 | ictl.command = ISDN_STAT_BSENT; | |
328 | ictl.arg = chan->id; | |
329 | dev->dev_if->statcallb(&ictl); | |
330 | } | |
331 | #endif | |
332 | ||
886cca3a | 333 | static int pcbit_xmit(int driver, int chnum, int ack, struct sk_buff *skb) |
1da177e4 LT |
334 | { |
335 | ushort hdrlen; | |
336 | int refnum, len; | |
337 | struct pcbit_chan * chan; | |
338 | struct pcbit_dev *dev; | |
339 | ||
340 | dev = finddev(driver); | |
341 | if (dev == NULL) | |
342 | { | |
343 | printk("finddev returned NULL"); | |
344 | return -1; | |
345 | } | |
346 | ||
347 | chan = chnum ? dev->b2 : dev->b1; | |
348 | ||
349 | ||
350 | if (chan->fsm_state != ST_ACTIVE) | |
351 | return -1; | |
352 | ||
353 | if (chan->queued >= MAX_QUEUED ) | |
354 | { | |
355 | #ifdef DEBUG_QUEUE | |
356 | printk(KERN_DEBUG | |
357 | "pcbit: %d packets already in queue - write fails\n", | |
358 | chan->queued); | |
359 | #endif | |
360 | /* | |
361 | * packet stays on the head of the device queue | |
362 | * since dev_start_xmit will fail | |
363 | * see net/core/dev.c | |
364 | */ | |
365 | #ifdef BLOCK_TIMER | |
366 | if (chan->block_timer.function == NULL) { | |
367 | init_timer(&chan->block_timer); | |
368 | chan->block_timer.function = &pcbit_block_timer; | |
369 | chan->block_timer.data = (long) chan; | |
370 | chan->block_timer.expires = jiffies + 1 * HZ; | |
371 | add_timer(&chan->block_timer); | |
372 | } | |
373 | #endif | |
374 | return 0; | |
375 | } | |
376 | ||
377 | ||
378 | chan->queued++; | |
379 | ||
380 | len = skb->len; | |
381 | ||
382 | hdrlen = capi_tdata_req(chan, skb); | |
383 | ||
384 | refnum = last_ref_num++ & 0x7fffU; | |
385 | chan->s_refnum = refnum; | |
386 | ||
387 | pcbit_l2_write(dev, MSG_TDATA_REQ, refnum, skb, hdrlen); | |
388 | ||
389 | return len; | |
390 | } | |
391 | ||
886cca3a | 392 | static int pcbit_writecmd(const u_char __user *buf, int len, int driver, int channel) |
1da177e4 LT |
393 | { |
394 | struct pcbit_dev * dev; | |
395 | int i, j; | |
396 | const u_char * loadbuf; | |
397 | u_char * ptr = NULL; | |
398 | u_char *cbuf; | |
399 | ||
400 | int errstat; | |
401 | ||
402 | dev = finddev(driver); | |
403 | ||
404 | if (!dev) | |
405 | { | |
406 | printk("pcbit_writecmd: couldn't find device"); | |
407 | return -ENODEV; | |
408 | } | |
409 | ||
410 | switch(dev->l2_state) { | |
411 | case L2_LWMODE: | |
412 | /* check (size <= rdp_size); write buf into board */ | |
413 | if (len < 0 || len > BANK4 + 1 || len > 1024) | |
414 | { | |
415 | printk("pcbit_writecmd: invalid length %d\n", len); | |
416 | return -EINVAL; | |
417 | } | |
418 | ||
419 | cbuf = kmalloc(len, GFP_KERNEL); | |
420 | if (!cbuf) | |
421 | return -ENOMEM; | |
422 | ||
423 | if (copy_from_user(cbuf, buf, len)) { | |
424 | kfree(cbuf); | |
425 | return -EFAULT; | |
426 | } | |
427 | memcpy_toio(dev->sh_mem, cbuf, len); | |
428 | kfree(cbuf); | |
429 | return len; | |
430 | case L2_FWMODE: | |
431 | /* this is the hard part */ | |
432 | /* dumb board */ | |
433 | /* get it into kernel space */ | |
434 | if ((ptr = kmalloc(len, GFP_KERNEL))==NULL) | |
435 | return -ENOMEM; | |
436 | if (copy_from_user(ptr, buf, len)) { | |
437 | kfree(ptr); | |
438 | return -EFAULT; | |
439 | } | |
440 | loadbuf = ptr; | |
441 | ||
442 | errstat = 0; | |
443 | ||
444 | for (i=0; i < len; i++) | |
445 | { | |
446 | for(j=0; j < LOAD_RETRY; j++) | |
447 | if (!(readb(dev->sh_mem + dev->loadptr))) | |
448 | break; | |
449 | ||
450 | if (j == LOAD_RETRY) | |
451 | { | |
452 | errstat = -ETIME; | |
453 | printk("TIMEOUT i=%d\n", i); | |
454 | break; | |
455 | } | |
456 | writeb(loadbuf[i], dev->sh_mem + dev->loadptr + 1); | |
457 | writeb(0x01, dev->sh_mem + dev->loadptr); | |
458 | ||
459 | dev->loadptr += 2; | |
460 | if (dev->loadptr > LOAD_ZONE_END) | |
461 | dev->loadptr = LOAD_ZONE_START; | |
462 | } | |
463 | kfree(ptr); | |
464 | ||
465 | return errstat ? errstat : len; | |
466 | default: | |
467 | return -EBUSY; | |
468 | } | |
469 | } | |
470 | ||
471 | /* | |
472 | * demultiplexing of messages | |
473 | * | |
474 | */ | |
475 | ||
476 | void pcbit_l3_receive(struct pcbit_dev * dev, ulong msg, | |
477 | struct sk_buff * skb, | |
478 | ushort hdr_len, ushort refnum) | |
479 | { | |
480 | struct pcbit_chan *chan; | |
481 | struct sk_buff *skb2; | |
482 | unsigned short len; | |
483 | struct callb_data cbdata; | |
484 | int complete, err; | |
485 | isdn_ctrl ictl; | |
486 | ||
487 | switch(msg) { | |
488 | ||
489 | case MSG_TDATA_IND: | |
490 | if (!(chan = capi_channel(dev, skb))) { | |
491 | printk(KERN_WARNING | |
492 | "CAPI header: unknown channel id\n"); | |
493 | break; | |
494 | } | |
495 | chan->r_refnum = skb->data[7]; | |
496 | skb_pull(skb, 8); | |
497 | ||
498 | dev->dev_if->rcvcallb_skb(dev->id, chan->id, skb); | |
499 | ||
500 | if (capi_tdata_resp(chan, &skb2) > 0) | |
501 | pcbit_l2_write(dev, MSG_TDATA_RESP, refnum, | |
502 | skb2, skb2->len); | |
503 | return; | |
504 | break; | |
505 | case MSG_TDATA_CONF: | |
506 | if (!(chan = capi_channel(dev, skb))) { | |
507 | printk(KERN_WARNING | |
508 | "CAPI header: unknown channel id\n"); | |
509 | break; | |
510 | } | |
511 | ||
512 | #ifdef DEBUG | |
513 | if ( (*((ushort *) (skb->data + 2) )) != 0) { | |
514 | printk(KERN_DEBUG "TDATA_CONF error\n"); | |
515 | } | |
516 | #endif | |
517 | #ifdef BLOCK_TIMER | |
518 | if (chan->queued == MAX_QUEUED) { | |
519 | del_timer(&chan->block_timer); | |
520 | chan->block_timer.function = NULL; | |
521 | } | |
522 | ||
523 | #endif | |
524 | chan->queued--; | |
525 | ||
526 | ictl.driver = dev->id; | |
527 | ictl.command = ISDN_STAT_BSENT; | |
528 | ictl.arg = chan->id; | |
529 | dev->dev_if->statcallb(&ictl); | |
530 | break; | |
531 | ||
532 | case MSG_CONN_IND: | |
533 | /* | |
534 | * channel: 1st not used will do | |
535 | * if both are used we're in trouble | |
536 | */ | |
537 | ||
538 | if (!dev->b1->fsm_state) | |
539 | chan = dev->b1; | |
540 | else if (!dev->b2->fsm_state) | |
541 | chan = dev->b2; | |
542 | else { | |
543 | printk(KERN_INFO | |
544 | "Incoming connection: no channels available"); | |
545 | ||
546 | if ((len = capi_disc_req(*(ushort*)(skb->data), &skb2, CAUSE_NOCHAN)) > 0) | |
547 | pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb2, len); | |
548 | break; | |
549 | } | |
550 | ||
551 | cbdata.data.setup.CalledPN = NULL; | |
552 | cbdata.data.setup.CallingPN = NULL; | |
553 | ||
554 | capi_decode_conn_ind(chan, skb, &cbdata); | |
555 | cbdata.type = EV_NET_SETUP; | |
556 | ||
557 | pcbit_fsm_event(dev, chan, EV_NET_SETUP, NULL); | |
558 | ||
559 | if (pcbit_check_msn(dev, cbdata.data.setup.CallingPN)) | |
560 | pcbit_fsm_event(dev, chan, EV_USR_PROCED_REQ, &cbdata); | |
561 | else | |
562 | pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL); | |
563 | ||
3c7208f2 JJ |
564 | kfree(cbdata.data.setup.CalledPN); |
565 | kfree(cbdata.data.setup.CallingPN); | |
1da177e4 LT |
566 | break; |
567 | ||
568 | case MSG_CONN_CONF: | |
569 | /* | |
570 | * We should be able to find the channel by the message | |
571 | * reference number. The current version of the firmware | |
572 | * doesn't sent the ref number correctly. | |
573 | */ | |
574 | #ifdef DEBUG | |
575 | printk(KERN_DEBUG "refnum=%04x b1=%04x b2=%04x\n", refnum, | |
576 | dev->b1->s_refnum, | |
577 | dev->b2->s_refnum); | |
578 | #endif | |
579 | /* We just try to find a channel in the right state */ | |
580 | ||
581 | if (dev->b1->fsm_state == ST_CALL_INIT) | |
582 | chan = dev->b1; | |
583 | else { | |
584 | if (dev->b2->s_refnum == ST_CALL_INIT) | |
585 | chan = dev->b2; | |
586 | else { | |
587 | chan = NULL; | |
588 | printk(KERN_WARNING "Connection Confirm - no channel in Call Init state\n"); | |
589 | break; | |
590 | } | |
591 | } | |
592 | if (capi_decode_conn_conf(chan, skb, &complete)) { | |
593 | printk(KERN_DEBUG "conn_conf indicates error\n"); | |
594 | pcbit_fsm_event(dev, chan, EV_ERROR, NULL); | |
595 | } | |
596 | else | |
597 | if (complete) | |
598 | pcbit_fsm_event(dev, chan, EV_NET_CALL_PROC, NULL); | |
599 | else | |
600 | pcbit_fsm_event(dev, chan, EV_NET_SETUP_ACK, NULL); | |
601 | break; | |
602 | case MSG_CONN_ACTV_IND: | |
603 | ||
604 | if (!(chan = capi_channel(dev, skb))) { | |
605 | printk(KERN_WARNING | |
606 | "CAPI header: unknown channel id\n"); | |
607 | break; | |
608 | } | |
609 | ||
610 | if (capi_decode_conn_actv_ind(chan, skb)) { | |
611 | printk("error in capi_decode_conn_actv_ind\n"); | |
612 | /* pcbit_fsm_event(dev, chan, EV_ERROR, NULL); */ | |
613 | break; | |
614 | } | |
615 | chan->r_refnum = refnum; | |
616 | pcbit_fsm_event(dev, chan, EV_NET_CONN, NULL); | |
617 | break; | |
618 | case MSG_CONN_ACTV_CONF: | |
619 | ||
620 | if (!(chan = capi_channel(dev, skb))) { | |
621 | printk(KERN_WARNING | |
622 | "CAPI header: unknown channel id\n"); | |
623 | break; | |
624 | } | |
625 | ||
626 | if (capi_decode_conn_actv_conf(chan, skb) == 0) | |
627 | pcbit_fsm_event(dev, chan, EV_NET_CONN_ACK, NULL); | |
628 | ||
629 | else | |
630 | printk(KERN_DEBUG "decode_conn_actv_conf failed\n"); | |
631 | break; | |
632 | ||
633 | case MSG_SELP_CONF: | |
634 | ||
635 | if (!(chan = capi_channel(dev, skb))) { | |
636 | printk(KERN_WARNING | |
637 | "CAPI header: unknown channel id\n"); | |
638 | break; | |
639 | } | |
640 | ||
641 | if (!(err = capi_decode_sel_proto_conf(chan, skb))) | |
642 | pcbit_fsm_event(dev, chan, EV_NET_SELP_RESP, NULL); | |
643 | else { | |
644 | /* Error */ | |
645 | printk("error %d - capi_decode_sel_proto_conf\n", err); | |
646 | } | |
647 | break; | |
648 | case MSG_ACT_TRANSP_CONF: | |
649 | if (!(chan = capi_channel(dev, skb))) { | |
650 | printk(KERN_WARNING | |
651 | "CAPI header: unknown channel id\n"); | |
652 | break; | |
653 | } | |
654 | ||
655 | if (!capi_decode_actv_trans_conf(chan, skb)) | |
656 | pcbit_fsm_event(dev, chan, EV_NET_ACTV_RESP, NULL); | |
657 | break; | |
658 | ||
659 | case MSG_DISC_IND: | |
660 | ||
661 | if (!(chan = capi_channel(dev, skb))) { | |
662 | printk(KERN_WARNING | |
663 | "CAPI header: unknown channel id\n"); | |
664 | break; | |
665 | } | |
666 | ||
667 | if (!capi_decode_disc_ind(chan, skb)) | |
668 | pcbit_fsm_event(dev, chan, EV_NET_DISC, NULL); | |
669 | else | |
670 | printk(KERN_WARNING "capi_decode_disc_ind - error\n"); | |
671 | break; | |
672 | case MSG_DISC_CONF: | |
673 | if (!(chan = capi_channel(dev, skb))) { | |
674 | printk(KERN_WARNING | |
675 | "CAPI header: unknown channel id\n"); | |
676 | break; | |
677 | } | |
678 | ||
679 | if (!capi_decode_disc_ind(chan, skb)) | |
680 | pcbit_fsm_event(dev, chan, EV_NET_RELEASE, NULL); | |
681 | else | |
682 | printk(KERN_WARNING "capi_decode_disc_conf - error\n"); | |
683 | break; | |
684 | case MSG_INFO_IND: | |
685 | #ifdef DEBUG | |
686 | printk(KERN_DEBUG "received Info Indication - discarded\n"); | |
687 | #endif | |
688 | break; | |
689 | #ifdef DEBUG | |
690 | case MSG_DEBUG_188: | |
691 | capi_decode_debug_188(skb->data, skb->len); | |
692 | break; | |
693 | ||
694 | default: | |
695 | printk(KERN_DEBUG "pcbit_l3_receive: unknown message %08lx\n", | |
696 | msg); | |
697 | break; | |
698 | #endif | |
699 | } | |
700 | ||
701 | kfree_skb(skb); | |
702 | ||
703 | } | |
704 | ||
705 | /* | |
706 | * Single statbuf | |
707 | * should be a statbuf per device | |
708 | */ | |
709 | ||
710 | static char statbuf[STATBUF_LEN]; | |
711 | static int stat_st = 0; | |
712 | static int stat_end = 0; | |
713 | ||
886cca3a | 714 | static int pcbit_stat(u_char __user *buf, int len, int driver, int channel) |
1da177e4 LT |
715 | { |
716 | int stat_count; | |
717 | stat_count = stat_end - stat_st; | |
718 | ||
719 | if (stat_count < 0) | |
720 | stat_count = STATBUF_LEN - stat_st + stat_end; | |
721 | ||
722 | /* FIXME: should we sleep and wait for more cookies ? */ | |
723 | if (len > stat_count) | |
724 | len = stat_count; | |
725 | ||
726 | if (stat_st < stat_end) | |
727 | { | |
7786ce19 JG |
728 | if (copy_to_user(buf, statbuf + stat_st, len)) |
729 | return -EFAULT; | |
1da177e4 LT |
730 | stat_st += len; |
731 | } | |
732 | else | |
733 | { | |
734 | if (len > STATBUF_LEN - stat_st) | |
735 | { | |
7786ce19 JG |
736 | if (copy_to_user(buf, statbuf + stat_st, |
737 | STATBUF_LEN - stat_st)) | |
738 | return -EFAULT; | |
739 | if (copy_to_user(buf, statbuf, | |
740 | len - (STATBUF_LEN - stat_st))) | |
741 | return -EFAULT; | |
1da177e4 LT |
742 | |
743 | stat_st = len - (STATBUF_LEN - stat_st); | |
744 | } | |
745 | else | |
746 | { | |
7786ce19 JG |
747 | if (copy_to_user(buf, statbuf + stat_st, len)) |
748 | return -EFAULT; | |
1da177e4 LT |
749 | |
750 | stat_st += len; | |
751 | ||
752 | if (stat_st == STATBUF_LEN) | |
753 | stat_st = 0; | |
754 | } | |
755 | } | |
756 | ||
757 | if (stat_st == stat_end) | |
758 | stat_st = stat_end = 0; | |
759 | ||
760 | return len; | |
761 | } | |
762 | ||
763 | static void pcbit_logstat(struct pcbit_dev *dev, char *str) | |
764 | { | |
765 | int i; | |
766 | isdn_ctrl ictl; | |
767 | ||
768 | for (i=stat_end; i<strlen(str); i++) | |
769 | { | |
770 | statbuf[i]=str[i]; | |
771 | stat_end = (stat_end + 1) % STATBUF_LEN; | |
772 | if (stat_end == stat_st) | |
773 | stat_st = (stat_st + 1) % STATBUF_LEN; | |
774 | } | |
775 | ||
776 | ictl.command=ISDN_STAT_STAVAIL; | |
777 | ictl.driver=dev->id; | |
778 | ictl.arg=strlen(str); | |
779 | dev->dev_if->statcallb(&ictl); | |
780 | } | |
781 | ||
782 | extern char * isdn_state_table[]; | |
783 | extern char * strisdnevent(unsigned short); | |
784 | ||
785 | ||
786 | void pcbit_state_change(struct pcbit_dev * dev, struct pcbit_chan * chan, | |
787 | unsigned short i, unsigned short ev, unsigned short f) | |
788 | { | |
789 | char buf[256]; | |
790 | ||
791 | sprintf(buf, "change on device: %d channel:%d\n%s -> %s -> %s\n", | |
792 | dev->id, chan->id, | |
793 | isdn_state_table[i], strisdnevent(ev), isdn_state_table[f] | |
794 | ); | |
795 | ||
796 | #ifdef DEBUG | |
797 | printk("%s", buf); | |
798 | #endif | |
799 | ||
800 | pcbit_logstat(dev, buf); | |
801 | } | |
802 | ||
803 | static void set_running_timeout(unsigned long ptr) | |
804 | { | |
805 | struct pcbit_dev * dev; | |
806 | ||
807 | #ifdef DEBUG | |
808 | printk(KERN_DEBUG "set_running_timeout\n"); | |
809 | #endif | |
810 | dev = (struct pcbit_dev *) ptr; | |
811 | ||
812 | wake_up_interruptible(&dev->set_running_wq); | |
813 | } | |
814 | ||
815 | static int set_protocol_running(struct pcbit_dev * dev) | |
816 | { | |
817 | isdn_ctrl ctl; | |
818 | ||
819 | init_timer(&dev->set_running_timer); | |
820 | ||
821 | dev->set_running_timer.function = &set_running_timeout; | |
822 | dev->set_running_timer.data = (ulong) dev; | |
823 | dev->set_running_timer.expires = jiffies + SET_RUN_TIMEOUT; | |
824 | ||
825 | /* kick it */ | |
826 | ||
827 | dev->l2_state = L2_STARTING; | |
828 | ||
829 | writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)), | |
830 | dev->sh_mem + BANK4); | |
831 | ||
832 | add_timer(&dev->set_running_timer); | |
833 | ||
834 | interruptible_sleep_on(&dev->set_running_wq); | |
835 | ||
836 | del_timer(&dev->set_running_timer); | |
837 | ||
838 | if (dev->l2_state == L2_RUNNING) | |
839 | { | |
840 | printk(KERN_DEBUG "pcbit: running\n"); | |
841 | ||
842 | dev->unack_seq = dev->send_seq; | |
843 | ||
844 | dev->writeptr = dev->sh_mem; | |
845 | dev->readptr = dev->sh_mem + BANK2; | |
846 | ||
847 | /* tell the good news to the upper layer */ | |
848 | ctl.driver = dev->id; | |
849 | ctl.command = ISDN_STAT_RUN; | |
850 | ||
851 | dev->dev_if->statcallb(&ctl); | |
852 | } | |
853 | else | |
854 | { | |
855 | printk(KERN_DEBUG "pcbit: initialization failed\n"); | |
856 | printk(KERN_DEBUG "pcbit: firmware not loaded\n"); | |
857 | ||
858 | dev->l2_state = L2_DOWN; | |
859 | ||
860 | #ifdef DEBUG | |
861 | printk(KERN_DEBUG "Bank3 = %02x\n", | |
862 | readb(dev->sh_mem + BANK3)); | |
863 | #endif | |
864 | writeb(0x40, dev->sh_mem + BANK4); | |
865 | ||
866 | /* warn the upper layer */ | |
867 | ctl.driver = dev->id; | |
868 | ctl.command = ISDN_STAT_STOP; | |
869 | ||
870 | dev->dev_if->statcallb(&ctl); | |
871 | ||
872 | return -EL2HLT; /* Level 2 halted */ | |
873 | } | |
874 | ||
875 | return 0; | |
876 | } | |
877 | ||
878 | static int pcbit_ioctl(isdn_ctrl* ctl) | |
879 | { | |
880 | struct pcbit_dev * dev; | |
881 | struct pcbit_ioctl *cmd; | |
882 | ||
883 | dev = finddev(ctl->driver); | |
884 | ||
885 | if (!dev) | |
886 | { | |
887 | printk(KERN_DEBUG "pcbit_ioctl: unknown device\n"); | |
888 | return -ENODEV; | |
889 | } | |
890 | ||
891 | cmd = (struct pcbit_ioctl *) ctl->parm.num; | |
892 | ||
893 | switch(ctl->arg) { | |
894 | case PCBIT_IOCTL_GETSTAT: | |
895 | cmd->info.l2_status = dev->l2_state; | |
896 | break; | |
897 | ||
898 | case PCBIT_IOCTL_STRLOAD: | |
899 | if (dev->l2_state == L2_RUNNING) | |
900 | return -EBUSY; | |
901 | ||
902 | dev->unack_seq = dev->send_seq = dev->rcv_seq = 0; | |
903 | ||
904 | dev->writeptr = dev->sh_mem; | |
905 | dev->readptr = dev->sh_mem + BANK2; | |
906 | ||
907 | dev->l2_state = L2_LOADING; | |
908 | break; | |
909 | ||
910 | case PCBIT_IOCTL_LWMODE: | |
911 | if (dev->l2_state != L2_LOADING) | |
912 | return -EINVAL; | |
913 | ||
914 | dev->l2_state = L2_LWMODE; | |
915 | break; | |
916 | ||
917 | case PCBIT_IOCTL_FWMODE: | |
918 | if (dev->l2_state == L2_RUNNING) | |
919 | return -EBUSY; | |
920 | dev->loadptr = LOAD_ZONE_START; | |
921 | dev->l2_state = L2_FWMODE; | |
922 | ||
923 | break; | |
924 | case PCBIT_IOCTL_ENDLOAD: | |
925 | if (dev->l2_state == L2_RUNNING) | |
926 | return -EBUSY; | |
927 | dev->l2_state = L2_DOWN; | |
928 | break; | |
929 | ||
930 | case PCBIT_IOCTL_SETBYTE: | |
931 | if (dev->l2_state == L2_RUNNING) | |
932 | return -EBUSY; | |
933 | ||
934 | /* check addr */ | |
935 | if (cmd->info.rdp_byte.addr > BANK4) | |
936 | return -EFAULT; | |
937 | ||
938 | writeb(cmd->info.rdp_byte.value, dev->sh_mem + cmd->info.rdp_byte.addr); | |
939 | break; | |
940 | case PCBIT_IOCTL_GETBYTE: | |
941 | if (dev->l2_state == L2_RUNNING) | |
942 | return -EBUSY; | |
943 | ||
944 | /* check addr */ | |
945 | ||
946 | if (cmd->info.rdp_byte.addr > BANK4) | |
947 | { | |
948 | printk("getbyte: invalid addr %04x\n", cmd->info.rdp_byte.addr); | |
949 | return -EFAULT; | |
950 | } | |
951 | ||
952 | cmd->info.rdp_byte.value = readb(dev->sh_mem + cmd->info.rdp_byte.addr); | |
953 | break; | |
954 | case PCBIT_IOCTL_RUNNING: | |
955 | if (dev->l2_state == L2_RUNNING) | |
956 | return -EBUSY; | |
957 | return set_protocol_running(dev); | |
958 | break; | |
959 | case PCBIT_IOCTL_WATCH188: | |
960 | if (dev->l2_state != L2_LOADING) | |
961 | return -EINVAL; | |
962 | pcbit_l2_write(dev, MSG_WATCH188, 0x0001, NULL, 0); | |
963 | break; | |
964 | case PCBIT_IOCTL_PING188: | |
965 | if (dev->l2_state != L2_LOADING) | |
966 | return -EINVAL; | |
967 | pcbit_l2_write(dev, MSG_PING188_REQ, 0x0001, NULL, 0); | |
968 | break; | |
969 | case PCBIT_IOCTL_APION: | |
970 | if (dev->l2_state != L2_LOADING) | |
971 | return -EINVAL; | |
972 | pcbit_l2_write(dev, MSG_API_ON, 0x0001, NULL, 0); | |
973 | break; | |
974 | case PCBIT_IOCTL_STOP: | |
975 | dev->l2_state = L2_DOWN; | |
976 | writeb(0x40, dev->sh_mem + BANK4); | |
977 | dev->rcv_seq = 0; | |
978 | dev->send_seq = 0; | |
979 | dev->unack_seq = 0; | |
980 | break; | |
981 | default: | |
982 | printk("error: unknown ioctl\n"); | |
983 | break; | |
984 | }; | |
985 | return 0; | |
986 | } | |
987 | ||
988 | /* | |
989 | * MSN list handling | |
990 | * | |
991 | * if null reject all calls | |
992 | * if first entry has null MSN accept all calls | |
993 | */ | |
994 | ||
995 | static void pcbit_clear_msn(struct pcbit_dev *dev) | |
996 | { | |
997 | struct msn_entry *ptr, *back; | |
998 | ||
999 | for (ptr=dev->msn_list; ptr; ) | |
1000 | { | |
1001 | back = ptr->next; | |
1002 | kfree(ptr); | |
1003 | ptr = back; | |
1004 | } | |
1005 | ||
1006 | dev->msn_list = NULL; | |
1007 | } | |
1008 | ||
1009 | static void pcbit_set_msn(struct pcbit_dev *dev, char *list) | |
1010 | { | |
1011 | struct msn_entry *ptr; | |
1012 | struct msn_entry *back = NULL; | |
1013 | char *cp, *sp; | |
1014 | int len; | |
1015 | ||
1016 | if (strlen(list) == 0) { | |
1017 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1018 | if (!ptr) { | |
1019 | printk(KERN_WARNING "kmalloc failed\n"); | |
1020 | return; | |
1021 | } | |
1022 | ||
1023 | ptr->msn = NULL; | |
1024 | ||
1025 | ptr->next = dev->msn_list; | |
1026 | dev->msn_list = ptr; | |
1027 | ||
1028 | return; | |
1029 | } | |
1030 | ||
1031 | if (dev->msn_list) | |
1032 | for (back=dev->msn_list; back->next; back=back->next); | |
1033 | ||
1034 | sp = list; | |
1035 | ||
1036 | do { | |
1037 | cp=strchr(sp, ','); | |
1038 | if (cp) | |
1039 | len = cp - sp; | |
1040 | else | |
1041 | len = strlen(sp); | |
1042 | ||
1043 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1044 | ||
1045 | if (!ptr) { | |
1046 | printk(KERN_WARNING "kmalloc failed\n"); | |
1047 | return; | |
1048 | } | |
1049 | ptr->next = NULL; | |
1050 | ||
1051 | ptr->msn = kmalloc(len, GFP_ATOMIC); | |
1052 | if (!ptr->msn) { | |
1053 | printk(KERN_WARNING "kmalloc failed\n"); | |
1054 | kfree(ptr); | |
1055 | return; | |
1056 | } | |
1057 | ||
1058 | memcpy(ptr->msn, sp, len - 1); | |
1059 | ptr->msn[len] = 0; | |
1060 | ||
1061 | #ifdef DEBUG | |
1062 | printk(KERN_DEBUG "msn: %s\n", ptr->msn); | |
1063 | #endif | |
1064 | if (dev->msn_list == NULL) | |
1065 | dev->msn_list = ptr; | |
1066 | else | |
1067 | back->next = ptr; | |
1068 | back = ptr; | |
1069 | sp += len; | |
1070 | } while(cp); | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * check if we do signal or reject an incoming call | |
1075 | */ | |
1076 | static int pcbit_check_msn(struct pcbit_dev *dev, char *msn) | |
1077 | { | |
1078 | struct msn_entry *ptr; | |
1079 | ||
1080 | for (ptr=dev->msn_list; ptr; ptr=ptr->next) { | |
1081 | ||
1082 | if (ptr->msn == NULL) | |
1083 | return 1; | |
1084 | ||
1085 | if (strcmp(ptr->msn, msn) == 0) | |
1086 | return 1; | |
1087 | } | |
1088 | ||
1089 | return 0; | |
1090 | } |