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 | ||
1da177e4 LT |
22 | |
23 | #include <linux/kernel.h> | |
24 | ||
25 | #include <linux/types.h> | |
d43c36dc | 26 | #include <linux/sched.h> |
1da177e4 LT |
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 | ||
1da177e4 LT |
71 | int pcbit_init_dev(int board, int mem_base, int irq) |
72 | { | |
73 | struct pcbit_dev *dev; | |
74 | isdn_if *dev_if; | |
75 | ||
41f96935 | 76 | if ((dev=kzalloc(sizeof(struct pcbit_dev), GFP_KERNEL)) == NULL) |
1da177e4 LT |
77 | { |
78 | printk("pcbit_init: couldn't malloc pcbit_dev struct\n"); | |
79 | return -ENOMEM; | |
80 | } | |
81 | ||
82 | dev_pcbit[board] = dev; | |
1da177e4 LT |
83 | init_waitqueue_head(&dev->set_running_wq); |
84 | spin_lock_init(&dev->lock); | |
85 | ||
86 | if (mem_base >= 0xA0000 && mem_base <= 0xFFFFF ) { | |
87 | dev->ph_mem = mem_base; | |
88 | if (!request_mem_region(dev->ph_mem, 4096, "PCBIT mem")) { | |
89 | printk(KERN_WARNING | |
90 | "PCBIT: memory region %lx-%lx already in use\n", | |
91 | dev->ph_mem, dev->ph_mem + 4096); | |
92 | kfree(dev); | |
93 | dev_pcbit[board] = NULL; | |
94 | return -EACCES; | |
95 | } | |
96 | dev->sh_mem = ioremap(dev->ph_mem, 4096); | |
97 | } | |
98 | else | |
99 | { | |
100 | printk("memory address invalid"); | |
101 | kfree(dev); | |
102 | dev_pcbit[board] = NULL; | |
103 | return -EACCES; | |
104 | } | |
105 | ||
41f96935 | 106 | dev->b1 = kzalloc(sizeof(struct pcbit_chan), GFP_KERNEL); |
1da177e4 LT |
107 | if (!dev->b1) { |
108 | printk("pcbit_init: couldn't malloc pcbit_chan struct\n"); | |
109 | iounmap(dev->sh_mem); | |
110 | release_mem_region(dev->ph_mem, 4096); | |
111 | kfree(dev); | |
112 | return -ENOMEM; | |
113 | } | |
114 | ||
41f96935 | 115 | dev->b2 = kzalloc(sizeof(struct pcbit_chan), GFP_KERNEL); |
1da177e4 LT |
116 | if (!dev->b2) { |
117 | printk("pcbit_init: couldn't malloc pcbit_chan struct\n"); | |
118 | kfree(dev->b1); | |
119 | iounmap(dev->sh_mem); | |
120 | release_mem_region(dev->ph_mem, 4096); | |
121 | kfree(dev); | |
122 | return -ENOMEM; | |
123 | } | |
124 | ||
1da177e4 LT |
125 | dev->b2->id = 1; |
126 | ||
c4028958 | 127 | INIT_WORK(&dev->qdelivery, pcbit_deliver); |
1da177e4 LT |
128 | |
129 | /* | |
130 | * interrupts | |
131 | */ | |
132 | ||
133 | if (request_irq(irq, &pcbit_irq_handler, 0, pcbit_devname[board], dev) != 0) | |
134 | { | |
135 | kfree(dev->b1); | |
136 | kfree(dev->b2); | |
137 | iounmap(dev->sh_mem); | |
138 | release_mem_region(dev->ph_mem, 4096); | |
139 | kfree(dev); | |
140 | dev_pcbit[board] = NULL; | |
141 | return -EIO; | |
142 | } | |
143 | ||
144 | dev->irq = irq; | |
145 | ||
146 | /* next frame to be received */ | |
147 | dev->rcv_seq = 0; | |
148 | dev->send_seq = 0; | |
149 | dev->unack_seq = 0; | |
150 | ||
151 | dev->hl_hdrlen = 16; | |
152 | ||
153 | dev_if = kmalloc(sizeof(isdn_if), GFP_KERNEL); | |
154 | ||
155 | if (!dev_if) { | |
156 | free_irq(irq, dev); | |
157 | kfree(dev->b1); | |
158 | kfree(dev->b2); | |
159 | iounmap(dev->sh_mem); | |
160 | release_mem_region(dev->ph_mem, 4096); | |
161 | kfree(dev); | |
162 | dev_pcbit[board] = NULL; | |
163 | return -EIO; | |
164 | } | |
165 | ||
166 | dev->dev_if = dev_if; | |
167 | ||
168 | dev_if->owner = THIS_MODULE; | |
169 | ||
170 | dev_if->channels = 2; | |
171 | ||
172 | dev_if->features = (ISDN_FEATURE_P_EURO | ISDN_FEATURE_L3_TRANS | | |
173 | ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L2_TRANS ); | |
174 | ||
175 | dev_if->writebuf_skb = pcbit_xmit; | |
176 | dev_if->hl_hdrlen = 16; | |
177 | ||
178 | dev_if->maxbufsize = MAXBUFSIZE; | |
179 | dev_if->command = pcbit_command; | |
180 | ||
181 | dev_if->writecmd = pcbit_writecmd; | |
182 | dev_if->readstat = pcbit_stat; | |
183 | ||
184 | ||
185 | strcpy(dev_if->id, pcbit_devname[board]); | |
186 | ||
187 | if (!register_isdn(dev_if)) { | |
188 | free_irq(irq, dev); | |
189 | kfree(dev->b1); | |
190 | kfree(dev->b2); | |
191 | iounmap(dev->sh_mem); | |
192 | release_mem_region(dev->ph_mem, 4096); | |
193 | kfree(dev); | |
194 | dev_pcbit[board] = NULL; | |
195 | return -EIO; | |
196 | } | |
197 | ||
198 | dev->id = dev_if->channels; | |
199 | ||
200 | ||
201 | dev->l2_state = L2_DOWN; | |
202 | dev->free = 511; | |
203 | ||
204 | /* | |
205 | * set_protocol_running(dev); | |
206 | */ | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | #ifdef MODULE | |
212 | void pcbit_terminate(int board) | |
213 | { | |
214 | struct pcbit_dev * dev; | |
215 | ||
216 | dev = dev_pcbit[board]; | |
217 | ||
218 | if (dev) { | |
219 | /* unregister_isdn(dev->dev_if); */ | |
220 | free_irq(dev->irq, dev); | |
221 | pcbit_clear_msn(dev); | |
222 | kfree(dev->dev_if); | |
223 | if (dev->b1->fsm_timer.function) | |
224 | del_timer(&dev->b1->fsm_timer); | |
225 | if (dev->b2->fsm_timer.function) | |
226 | del_timer(&dev->b2->fsm_timer); | |
227 | kfree(dev->b1); | |
228 | kfree(dev->b2); | |
229 | iounmap(dev->sh_mem); | |
230 | release_mem_region(dev->ph_mem, 4096); | |
231 | kfree(dev); | |
232 | } | |
233 | } | |
234 | #endif | |
235 | ||
886cca3a | 236 | static int pcbit_command(isdn_ctrl* ctl) |
1da177e4 LT |
237 | { |
238 | struct pcbit_dev *dev; | |
239 | struct pcbit_chan *chan; | |
240 | struct callb_data info; | |
241 | ||
242 | dev = finddev(ctl->driver); | |
243 | ||
244 | if (!dev) | |
245 | { | |
246 | printk("pcbit_command: unknown device\n"); | |
247 | return -1; | |
248 | } | |
249 | ||
250 | chan = (ctl->arg & 0x0F) ? dev->b2 : dev->b1; | |
251 | ||
252 | ||
253 | switch(ctl->command) { | |
254 | case ISDN_CMD_IOCTL: | |
255 | return pcbit_ioctl(ctl); | |
256 | break; | |
257 | case ISDN_CMD_DIAL: | |
258 | info.type = EV_USR_SETUP_REQ; | |
259 | info.data.setup.CalledPN = (char *) &ctl->parm.setup.phone; | |
260 | pcbit_fsm_event(dev, chan, EV_USR_SETUP_REQ, &info); | |
261 | break; | |
262 | case ISDN_CMD_ACCEPTD: | |
263 | pcbit_fsm_event(dev, chan, EV_USR_SETUP_RESP, NULL); | |
264 | break; | |
265 | case ISDN_CMD_ACCEPTB: | |
266 | printk("ISDN_CMD_ACCEPTB - not really needed\n"); | |
267 | break; | |
268 | case ISDN_CMD_HANGUP: | |
269 | pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL); | |
270 | break; | |
271 | case ISDN_CMD_SETL2: | |
272 | chan->proto = (ctl->arg >> 8); | |
273 | break; | |
274 | case ISDN_CMD_CLREAZ: | |
275 | pcbit_clear_msn(dev); | |
276 | break; | |
277 | case ISDN_CMD_SETEAZ: | |
278 | pcbit_set_msn(dev, ctl->parm.num); | |
279 | break; | |
280 | case ISDN_CMD_SETL3: | |
281 | if ((ctl->arg >> 8) != ISDN_PROTO_L3_TRANS) | |
282 | printk(KERN_DEBUG "L3 protocol unknown\n"); | |
283 | break; | |
284 | default: | |
285 | printk(KERN_DEBUG "pcbit_command: unknown command\n"); | |
286 | break; | |
287 | }; | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | /* | |
293 | * Another Hack :-( | |
294 | * on some conditions the board stops sending TDATA_CONFs | |
295 | * let's see if we can turn around the problem | |
296 | */ | |
297 | ||
298 | #ifdef BLOCK_TIMER | |
299 | static void pcbit_block_timer(unsigned long data) | |
300 | { | |
301 | struct pcbit_chan *chan; | |
302 | struct pcbit_dev * dev; | |
303 | isdn_ctrl ictl; | |
304 | ||
305 | chan = (struct pcbit_chan *) data; | |
306 | ||
307 | dev = chan2dev(chan); | |
308 | ||
309 | if (dev == NULL) { | |
310 | printk(KERN_DEBUG "pcbit: chan2dev failed\n"); | |
311 | return; | |
312 | } | |
313 | ||
314 | del_timer(&chan->block_timer); | |
315 | chan->block_timer.function = NULL; | |
316 | ||
317 | #ifdef DEBUG | |
318 | printk(KERN_DEBUG "pcbit_block_timer\n"); | |
319 | #endif | |
320 | chan->queued = 0; | |
321 | ictl.driver = dev->id; | |
322 | ictl.command = ISDN_STAT_BSENT; | |
323 | ictl.arg = chan->id; | |
324 | dev->dev_if->statcallb(&ictl); | |
325 | } | |
326 | #endif | |
327 | ||
886cca3a | 328 | static int pcbit_xmit(int driver, int chnum, int ack, struct sk_buff *skb) |
1da177e4 LT |
329 | { |
330 | ushort hdrlen; | |
331 | int refnum, len; | |
332 | struct pcbit_chan * chan; | |
333 | struct pcbit_dev *dev; | |
334 | ||
335 | dev = finddev(driver); | |
336 | if (dev == NULL) | |
337 | { | |
338 | printk("finddev returned NULL"); | |
339 | return -1; | |
340 | } | |
341 | ||
342 | chan = chnum ? dev->b2 : dev->b1; | |
343 | ||
344 | ||
345 | if (chan->fsm_state != ST_ACTIVE) | |
346 | return -1; | |
347 | ||
348 | if (chan->queued >= MAX_QUEUED ) | |
349 | { | |
350 | #ifdef DEBUG_QUEUE | |
351 | printk(KERN_DEBUG | |
352 | "pcbit: %d packets already in queue - write fails\n", | |
353 | chan->queued); | |
354 | #endif | |
355 | /* | |
356 | * packet stays on the head of the device queue | |
357 | * since dev_start_xmit will fail | |
358 | * see net/core/dev.c | |
359 | */ | |
360 | #ifdef BLOCK_TIMER | |
361 | if (chan->block_timer.function == NULL) { | |
362 | init_timer(&chan->block_timer); | |
363 | chan->block_timer.function = &pcbit_block_timer; | |
364 | chan->block_timer.data = (long) chan; | |
365 | chan->block_timer.expires = jiffies + 1 * HZ; | |
366 | add_timer(&chan->block_timer); | |
367 | } | |
368 | #endif | |
369 | return 0; | |
370 | } | |
371 | ||
372 | ||
373 | chan->queued++; | |
374 | ||
375 | len = skb->len; | |
376 | ||
377 | hdrlen = capi_tdata_req(chan, skb); | |
378 | ||
379 | refnum = last_ref_num++ & 0x7fffU; | |
380 | chan->s_refnum = refnum; | |
381 | ||
382 | pcbit_l2_write(dev, MSG_TDATA_REQ, refnum, skb, hdrlen); | |
383 | ||
384 | return len; | |
385 | } | |
386 | ||
886cca3a | 387 | static int pcbit_writecmd(const u_char __user *buf, int len, int driver, int channel) |
1da177e4 LT |
388 | { |
389 | struct pcbit_dev * dev; | |
390 | int i, j; | |
391 | const u_char * loadbuf; | |
392 | u_char * ptr = NULL; | |
393 | u_char *cbuf; | |
394 | ||
395 | int errstat; | |
396 | ||
397 | dev = finddev(driver); | |
398 | ||
399 | if (!dev) | |
400 | { | |
401 | printk("pcbit_writecmd: couldn't find device"); | |
402 | return -ENODEV; | |
403 | } | |
404 | ||
405 | switch(dev->l2_state) { | |
406 | case L2_LWMODE: | |
407 | /* check (size <= rdp_size); write buf into board */ | |
408 | if (len < 0 || len > BANK4 + 1 || len > 1024) | |
409 | { | |
410 | printk("pcbit_writecmd: invalid length %d\n", len); | |
411 | return -EINVAL; | |
412 | } | |
413 | ||
414 | cbuf = kmalloc(len, GFP_KERNEL); | |
415 | if (!cbuf) | |
416 | return -ENOMEM; | |
417 | ||
418 | if (copy_from_user(cbuf, buf, len)) { | |
419 | kfree(cbuf); | |
420 | return -EFAULT; | |
421 | } | |
422 | memcpy_toio(dev->sh_mem, cbuf, len); | |
423 | kfree(cbuf); | |
424 | return len; | |
425 | case L2_FWMODE: | |
426 | /* this is the hard part */ | |
427 | /* dumb board */ | |
428 | /* get it into kernel space */ | |
429 | if ((ptr = kmalloc(len, GFP_KERNEL))==NULL) | |
430 | return -ENOMEM; | |
431 | if (copy_from_user(ptr, buf, len)) { | |
432 | kfree(ptr); | |
433 | return -EFAULT; | |
434 | } | |
435 | loadbuf = ptr; | |
436 | ||
437 | errstat = 0; | |
438 | ||
439 | for (i=0; i < len; i++) | |
440 | { | |
441 | for(j=0; j < LOAD_RETRY; j++) | |
442 | if (!(readb(dev->sh_mem + dev->loadptr))) | |
443 | break; | |
444 | ||
445 | if (j == LOAD_RETRY) | |
446 | { | |
447 | errstat = -ETIME; | |
448 | printk("TIMEOUT i=%d\n", i); | |
449 | break; | |
450 | } | |
451 | writeb(loadbuf[i], dev->sh_mem + dev->loadptr + 1); | |
452 | writeb(0x01, dev->sh_mem + dev->loadptr); | |
453 | ||
454 | dev->loadptr += 2; | |
455 | if (dev->loadptr > LOAD_ZONE_END) | |
456 | dev->loadptr = LOAD_ZONE_START; | |
457 | } | |
458 | kfree(ptr); | |
459 | ||
460 | return errstat ? errstat : len; | |
461 | default: | |
462 | return -EBUSY; | |
463 | } | |
464 | } | |
465 | ||
466 | /* | |
467 | * demultiplexing of messages | |
468 | * | |
469 | */ | |
470 | ||
471 | void pcbit_l3_receive(struct pcbit_dev * dev, ulong msg, | |
472 | struct sk_buff * skb, | |
473 | ushort hdr_len, ushort refnum) | |
474 | { | |
475 | struct pcbit_chan *chan; | |
476 | struct sk_buff *skb2; | |
477 | unsigned short len; | |
478 | struct callb_data cbdata; | |
479 | int complete, err; | |
480 | isdn_ctrl ictl; | |
481 | ||
482 | switch(msg) { | |
483 | ||
484 | case MSG_TDATA_IND: | |
485 | if (!(chan = capi_channel(dev, skb))) { | |
486 | printk(KERN_WARNING | |
487 | "CAPI header: unknown channel id\n"); | |
488 | break; | |
489 | } | |
490 | chan->r_refnum = skb->data[7]; | |
491 | skb_pull(skb, 8); | |
492 | ||
493 | dev->dev_if->rcvcallb_skb(dev->id, chan->id, skb); | |
494 | ||
495 | if (capi_tdata_resp(chan, &skb2) > 0) | |
496 | pcbit_l2_write(dev, MSG_TDATA_RESP, refnum, | |
497 | skb2, skb2->len); | |
498 | return; | |
499 | break; | |
500 | case MSG_TDATA_CONF: | |
501 | if (!(chan = capi_channel(dev, skb))) { | |
502 | printk(KERN_WARNING | |
503 | "CAPI header: unknown channel id\n"); | |
504 | break; | |
505 | } | |
506 | ||
507 | #ifdef DEBUG | |
508 | if ( (*((ushort *) (skb->data + 2) )) != 0) { | |
509 | printk(KERN_DEBUG "TDATA_CONF error\n"); | |
510 | } | |
511 | #endif | |
512 | #ifdef BLOCK_TIMER | |
513 | if (chan->queued == MAX_QUEUED) { | |
514 | del_timer(&chan->block_timer); | |
515 | chan->block_timer.function = NULL; | |
516 | } | |
517 | ||
518 | #endif | |
519 | chan->queued--; | |
520 | ||
521 | ictl.driver = dev->id; | |
522 | ictl.command = ISDN_STAT_BSENT; | |
523 | ictl.arg = chan->id; | |
524 | dev->dev_if->statcallb(&ictl); | |
525 | break; | |
526 | ||
527 | case MSG_CONN_IND: | |
528 | /* | |
529 | * channel: 1st not used will do | |
530 | * if both are used we're in trouble | |
531 | */ | |
532 | ||
533 | if (!dev->b1->fsm_state) | |
534 | chan = dev->b1; | |
535 | else if (!dev->b2->fsm_state) | |
536 | chan = dev->b2; | |
537 | else { | |
538 | printk(KERN_INFO | |
539 | "Incoming connection: no channels available"); | |
540 | ||
541 | if ((len = capi_disc_req(*(ushort*)(skb->data), &skb2, CAUSE_NOCHAN)) > 0) | |
542 | pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb2, len); | |
543 | break; | |
544 | } | |
545 | ||
546 | cbdata.data.setup.CalledPN = NULL; | |
547 | cbdata.data.setup.CallingPN = NULL; | |
548 | ||
549 | capi_decode_conn_ind(chan, skb, &cbdata); | |
550 | cbdata.type = EV_NET_SETUP; | |
551 | ||
552 | pcbit_fsm_event(dev, chan, EV_NET_SETUP, NULL); | |
553 | ||
554 | if (pcbit_check_msn(dev, cbdata.data.setup.CallingPN)) | |
555 | pcbit_fsm_event(dev, chan, EV_USR_PROCED_REQ, &cbdata); | |
556 | else | |
557 | pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL); | |
558 | ||
3c7208f2 JJ |
559 | kfree(cbdata.data.setup.CalledPN); |
560 | kfree(cbdata.data.setup.CallingPN); | |
1da177e4 LT |
561 | break; |
562 | ||
563 | case MSG_CONN_CONF: | |
564 | /* | |
565 | * We should be able to find the channel by the message | |
566 | * reference number. The current version of the firmware | |
567 | * doesn't sent the ref number correctly. | |
568 | */ | |
569 | #ifdef DEBUG | |
570 | printk(KERN_DEBUG "refnum=%04x b1=%04x b2=%04x\n", refnum, | |
571 | dev->b1->s_refnum, | |
572 | dev->b2->s_refnum); | |
573 | #endif | |
574 | /* We just try to find a channel in the right state */ | |
575 | ||
576 | if (dev->b1->fsm_state == ST_CALL_INIT) | |
577 | chan = dev->b1; | |
578 | else { | |
579 | if (dev->b2->s_refnum == ST_CALL_INIT) | |
580 | chan = dev->b2; | |
581 | else { | |
582 | chan = NULL; | |
583 | printk(KERN_WARNING "Connection Confirm - no channel in Call Init state\n"); | |
584 | break; | |
585 | } | |
586 | } | |
587 | if (capi_decode_conn_conf(chan, skb, &complete)) { | |
588 | printk(KERN_DEBUG "conn_conf indicates error\n"); | |
589 | pcbit_fsm_event(dev, chan, EV_ERROR, NULL); | |
590 | } | |
591 | else | |
592 | if (complete) | |
593 | pcbit_fsm_event(dev, chan, EV_NET_CALL_PROC, NULL); | |
594 | else | |
595 | pcbit_fsm_event(dev, chan, EV_NET_SETUP_ACK, NULL); | |
596 | break; | |
597 | case MSG_CONN_ACTV_IND: | |
598 | ||
599 | if (!(chan = capi_channel(dev, skb))) { | |
600 | printk(KERN_WARNING | |
601 | "CAPI header: unknown channel id\n"); | |
602 | break; | |
603 | } | |
604 | ||
605 | if (capi_decode_conn_actv_ind(chan, skb)) { | |
606 | printk("error in capi_decode_conn_actv_ind\n"); | |
607 | /* pcbit_fsm_event(dev, chan, EV_ERROR, NULL); */ | |
608 | break; | |
609 | } | |
610 | chan->r_refnum = refnum; | |
611 | pcbit_fsm_event(dev, chan, EV_NET_CONN, NULL); | |
612 | break; | |
613 | case MSG_CONN_ACTV_CONF: | |
614 | ||
615 | if (!(chan = capi_channel(dev, skb))) { | |
616 | printk(KERN_WARNING | |
617 | "CAPI header: unknown channel id\n"); | |
618 | break; | |
619 | } | |
620 | ||
621 | if (capi_decode_conn_actv_conf(chan, skb) == 0) | |
622 | pcbit_fsm_event(dev, chan, EV_NET_CONN_ACK, NULL); | |
623 | ||
624 | else | |
625 | printk(KERN_DEBUG "decode_conn_actv_conf failed\n"); | |
626 | break; | |
627 | ||
628 | case MSG_SELP_CONF: | |
629 | ||
630 | if (!(chan = capi_channel(dev, skb))) { | |
631 | printk(KERN_WARNING | |
632 | "CAPI header: unknown channel id\n"); | |
633 | break; | |
634 | } | |
635 | ||
636 | if (!(err = capi_decode_sel_proto_conf(chan, skb))) | |
637 | pcbit_fsm_event(dev, chan, EV_NET_SELP_RESP, NULL); | |
638 | else { | |
639 | /* Error */ | |
640 | printk("error %d - capi_decode_sel_proto_conf\n", err); | |
641 | } | |
642 | break; | |
643 | case MSG_ACT_TRANSP_CONF: | |
644 | if (!(chan = capi_channel(dev, skb))) { | |
645 | printk(KERN_WARNING | |
646 | "CAPI header: unknown channel id\n"); | |
647 | break; | |
648 | } | |
649 | ||
650 | if (!capi_decode_actv_trans_conf(chan, skb)) | |
651 | pcbit_fsm_event(dev, chan, EV_NET_ACTV_RESP, NULL); | |
652 | break; | |
653 | ||
654 | case MSG_DISC_IND: | |
655 | ||
656 | if (!(chan = capi_channel(dev, skb))) { | |
657 | printk(KERN_WARNING | |
658 | "CAPI header: unknown channel id\n"); | |
659 | break; | |
660 | } | |
661 | ||
662 | if (!capi_decode_disc_ind(chan, skb)) | |
663 | pcbit_fsm_event(dev, chan, EV_NET_DISC, NULL); | |
664 | else | |
665 | printk(KERN_WARNING "capi_decode_disc_ind - error\n"); | |
666 | break; | |
667 | case MSG_DISC_CONF: | |
668 | if (!(chan = capi_channel(dev, skb))) { | |
669 | printk(KERN_WARNING | |
670 | "CAPI header: unknown channel id\n"); | |
671 | break; | |
672 | } | |
673 | ||
674 | if (!capi_decode_disc_ind(chan, skb)) | |
675 | pcbit_fsm_event(dev, chan, EV_NET_RELEASE, NULL); | |
676 | else | |
677 | printk(KERN_WARNING "capi_decode_disc_conf - error\n"); | |
678 | break; | |
679 | case MSG_INFO_IND: | |
680 | #ifdef DEBUG | |
681 | printk(KERN_DEBUG "received Info Indication - discarded\n"); | |
682 | #endif | |
683 | break; | |
684 | #ifdef DEBUG | |
685 | case MSG_DEBUG_188: | |
686 | capi_decode_debug_188(skb->data, skb->len); | |
687 | break; | |
688 | ||
689 | default: | |
690 | printk(KERN_DEBUG "pcbit_l3_receive: unknown message %08lx\n", | |
691 | msg); | |
692 | break; | |
693 | #endif | |
694 | } | |
695 | ||
696 | kfree_skb(skb); | |
697 | ||
698 | } | |
699 | ||
700 | /* | |
701 | * Single statbuf | |
702 | * should be a statbuf per device | |
703 | */ | |
704 | ||
705 | static char statbuf[STATBUF_LEN]; | |
706 | static int stat_st = 0; | |
707 | static int stat_end = 0; | |
708 | ||
886cca3a | 709 | static int pcbit_stat(u_char __user *buf, int len, int driver, int channel) |
1da177e4 LT |
710 | { |
711 | int stat_count; | |
712 | stat_count = stat_end - stat_st; | |
713 | ||
714 | if (stat_count < 0) | |
715 | stat_count = STATBUF_LEN - stat_st + stat_end; | |
716 | ||
717 | /* FIXME: should we sleep and wait for more cookies ? */ | |
718 | if (len > stat_count) | |
719 | len = stat_count; | |
720 | ||
721 | if (stat_st < stat_end) | |
722 | { | |
7786ce19 JG |
723 | if (copy_to_user(buf, statbuf + stat_st, len)) |
724 | return -EFAULT; | |
1da177e4 LT |
725 | stat_st += len; |
726 | } | |
727 | else | |
728 | { | |
729 | if (len > STATBUF_LEN - stat_st) | |
730 | { | |
7786ce19 JG |
731 | if (copy_to_user(buf, statbuf + stat_st, |
732 | STATBUF_LEN - stat_st)) | |
733 | return -EFAULT; | |
734 | if (copy_to_user(buf, statbuf, | |
735 | len - (STATBUF_LEN - stat_st))) | |
736 | return -EFAULT; | |
1da177e4 LT |
737 | |
738 | stat_st = len - (STATBUF_LEN - stat_st); | |
739 | } | |
740 | else | |
741 | { | |
7786ce19 JG |
742 | if (copy_to_user(buf, statbuf + stat_st, len)) |
743 | return -EFAULT; | |
1da177e4 LT |
744 | |
745 | stat_st += len; | |
746 | ||
747 | if (stat_st == STATBUF_LEN) | |
748 | stat_st = 0; | |
749 | } | |
750 | } | |
751 | ||
752 | if (stat_st == stat_end) | |
753 | stat_st = stat_end = 0; | |
754 | ||
755 | return len; | |
756 | } | |
757 | ||
758 | static void pcbit_logstat(struct pcbit_dev *dev, char *str) | |
759 | { | |
760 | int i; | |
761 | isdn_ctrl ictl; | |
762 | ||
763 | for (i=stat_end; i<strlen(str); i++) | |
764 | { | |
765 | statbuf[i]=str[i]; | |
766 | stat_end = (stat_end + 1) % STATBUF_LEN; | |
767 | if (stat_end == stat_st) | |
768 | stat_st = (stat_st + 1) % STATBUF_LEN; | |
769 | } | |
770 | ||
771 | ictl.command=ISDN_STAT_STAVAIL; | |
772 | ictl.driver=dev->id; | |
773 | ictl.arg=strlen(str); | |
774 | dev->dev_if->statcallb(&ictl); | |
775 | } | |
776 | ||
1da177e4 LT |
777 | void pcbit_state_change(struct pcbit_dev * dev, struct pcbit_chan * chan, |
778 | unsigned short i, unsigned short ev, unsigned short f) | |
779 | { | |
780 | char buf[256]; | |
781 | ||
782 | sprintf(buf, "change on device: %d channel:%d\n%s -> %s -> %s\n", | |
783 | dev->id, chan->id, | |
784 | isdn_state_table[i], strisdnevent(ev), isdn_state_table[f] | |
785 | ); | |
786 | ||
787 | #ifdef DEBUG | |
788 | printk("%s", buf); | |
789 | #endif | |
790 | ||
791 | pcbit_logstat(dev, buf); | |
792 | } | |
793 | ||
794 | static void set_running_timeout(unsigned long ptr) | |
795 | { | |
796 | struct pcbit_dev * dev; | |
797 | ||
798 | #ifdef DEBUG | |
799 | printk(KERN_DEBUG "set_running_timeout\n"); | |
800 | #endif | |
801 | dev = (struct pcbit_dev *) ptr; | |
802 | ||
803 | wake_up_interruptible(&dev->set_running_wq); | |
804 | } | |
805 | ||
806 | static int set_protocol_running(struct pcbit_dev * dev) | |
807 | { | |
808 | isdn_ctrl ctl; | |
809 | ||
810 | init_timer(&dev->set_running_timer); | |
811 | ||
812 | dev->set_running_timer.function = &set_running_timeout; | |
813 | dev->set_running_timer.data = (ulong) dev; | |
814 | dev->set_running_timer.expires = jiffies + SET_RUN_TIMEOUT; | |
815 | ||
816 | /* kick it */ | |
817 | ||
818 | dev->l2_state = L2_STARTING; | |
819 | ||
820 | writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)), | |
821 | dev->sh_mem + BANK4); | |
822 | ||
823 | add_timer(&dev->set_running_timer); | |
824 | ||
825 | interruptible_sleep_on(&dev->set_running_wq); | |
826 | ||
827 | del_timer(&dev->set_running_timer); | |
828 | ||
829 | if (dev->l2_state == L2_RUNNING) | |
830 | { | |
831 | printk(KERN_DEBUG "pcbit: running\n"); | |
832 | ||
833 | dev->unack_seq = dev->send_seq; | |
834 | ||
835 | dev->writeptr = dev->sh_mem; | |
836 | dev->readptr = dev->sh_mem + BANK2; | |
837 | ||
838 | /* tell the good news to the upper layer */ | |
839 | ctl.driver = dev->id; | |
840 | ctl.command = ISDN_STAT_RUN; | |
841 | ||
842 | dev->dev_if->statcallb(&ctl); | |
843 | } | |
844 | else | |
845 | { | |
846 | printk(KERN_DEBUG "pcbit: initialization failed\n"); | |
847 | printk(KERN_DEBUG "pcbit: firmware not loaded\n"); | |
848 | ||
849 | dev->l2_state = L2_DOWN; | |
850 | ||
851 | #ifdef DEBUG | |
852 | printk(KERN_DEBUG "Bank3 = %02x\n", | |
853 | readb(dev->sh_mem + BANK3)); | |
854 | #endif | |
855 | writeb(0x40, dev->sh_mem + BANK4); | |
856 | ||
857 | /* warn the upper layer */ | |
858 | ctl.driver = dev->id; | |
859 | ctl.command = ISDN_STAT_STOP; | |
860 | ||
861 | dev->dev_if->statcallb(&ctl); | |
862 | ||
863 | return -EL2HLT; /* Level 2 halted */ | |
864 | } | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
869 | static int pcbit_ioctl(isdn_ctrl* ctl) | |
870 | { | |
871 | struct pcbit_dev * dev; | |
872 | struct pcbit_ioctl *cmd; | |
873 | ||
874 | dev = finddev(ctl->driver); | |
875 | ||
876 | if (!dev) | |
877 | { | |
878 | printk(KERN_DEBUG "pcbit_ioctl: unknown device\n"); | |
879 | return -ENODEV; | |
880 | } | |
881 | ||
882 | cmd = (struct pcbit_ioctl *) ctl->parm.num; | |
883 | ||
884 | switch(ctl->arg) { | |
885 | case PCBIT_IOCTL_GETSTAT: | |
886 | cmd->info.l2_status = dev->l2_state; | |
887 | break; | |
888 | ||
889 | case PCBIT_IOCTL_STRLOAD: | |
890 | if (dev->l2_state == L2_RUNNING) | |
891 | return -EBUSY; | |
892 | ||
893 | dev->unack_seq = dev->send_seq = dev->rcv_seq = 0; | |
894 | ||
895 | dev->writeptr = dev->sh_mem; | |
896 | dev->readptr = dev->sh_mem + BANK2; | |
897 | ||
898 | dev->l2_state = L2_LOADING; | |
899 | break; | |
900 | ||
901 | case PCBIT_IOCTL_LWMODE: | |
902 | if (dev->l2_state != L2_LOADING) | |
903 | return -EINVAL; | |
904 | ||
905 | dev->l2_state = L2_LWMODE; | |
906 | break; | |
907 | ||
908 | case PCBIT_IOCTL_FWMODE: | |
909 | if (dev->l2_state == L2_RUNNING) | |
910 | return -EBUSY; | |
911 | dev->loadptr = LOAD_ZONE_START; | |
912 | dev->l2_state = L2_FWMODE; | |
913 | ||
914 | break; | |
915 | case PCBIT_IOCTL_ENDLOAD: | |
916 | if (dev->l2_state == L2_RUNNING) | |
917 | return -EBUSY; | |
918 | dev->l2_state = L2_DOWN; | |
919 | break; | |
920 | ||
921 | case PCBIT_IOCTL_SETBYTE: | |
922 | if (dev->l2_state == L2_RUNNING) | |
923 | return -EBUSY; | |
924 | ||
925 | /* check addr */ | |
926 | if (cmd->info.rdp_byte.addr > BANK4) | |
927 | return -EFAULT; | |
928 | ||
929 | writeb(cmd->info.rdp_byte.value, dev->sh_mem + cmd->info.rdp_byte.addr); | |
930 | break; | |
931 | case PCBIT_IOCTL_GETBYTE: | |
932 | if (dev->l2_state == L2_RUNNING) | |
933 | return -EBUSY; | |
934 | ||
935 | /* check addr */ | |
936 | ||
937 | if (cmd->info.rdp_byte.addr > BANK4) | |
938 | { | |
939 | printk("getbyte: invalid addr %04x\n", cmd->info.rdp_byte.addr); | |
940 | return -EFAULT; | |
941 | } | |
942 | ||
943 | cmd->info.rdp_byte.value = readb(dev->sh_mem + cmd->info.rdp_byte.addr); | |
944 | break; | |
945 | case PCBIT_IOCTL_RUNNING: | |
946 | if (dev->l2_state == L2_RUNNING) | |
947 | return -EBUSY; | |
948 | return set_protocol_running(dev); | |
949 | break; | |
950 | case PCBIT_IOCTL_WATCH188: | |
951 | if (dev->l2_state != L2_LOADING) | |
952 | return -EINVAL; | |
953 | pcbit_l2_write(dev, MSG_WATCH188, 0x0001, NULL, 0); | |
954 | break; | |
955 | case PCBIT_IOCTL_PING188: | |
956 | if (dev->l2_state != L2_LOADING) | |
957 | return -EINVAL; | |
958 | pcbit_l2_write(dev, MSG_PING188_REQ, 0x0001, NULL, 0); | |
959 | break; | |
960 | case PCBIT_IOCTL_APION: | |
961 | if (dev->l2_state != L2_LOADING) | |
962 | return -EINVAL; | |
963 | pcbit_l2_write(dev, MSG_API_ON, 0x0001, NULL, 0); | |
964 | break; | |
965 | case PCBIT_IOCTL_STOP: | |
966 | dev->l2_state = L2_DOWN; | |
967 | writeb(0x40, dev->sh_mem + BANK4); | |
968 | dev->rcv_seq = 0; | |
969 | dev->send_seq = 0; | |
970 | dev->unack_seq = 0; | |
971 | break; | |
972 | default: | |
973 | printk("error: unknown ioctl\n"); | |
974 | break; | |
975 | }; | |
976 | return 0; | |
977 | } | |
978 | ||
979 | /* | |
980 | * MSN list handling | |
981 | * | |
982 | * if null reject all calls | |
983 | * if first entry has null MSN accept all calls | |
984 | */ | |
985 | ||
986 | static void pcbit_clear_msn(struct pcbit_dev *dev) | |
987 | { | |
988 | struct msn_entry *ptr, *back; | |
989 | ||
990 | for (ptr=dev->msn_list; ptr; ) | |
991 | { | |
992 | back = ptr->next; | |
993 | kfree(ptr); | |
994 | ptr = back; | |
995 | } | |
996 | ||
997 | dev->msn_list = NULL; | |
998 | } | |
999 | ||
1000 | static void pcbit_set_msn(struct pcbit_dev *dev, char *list) | |
1001 | { | |
1002 | struct msn_entry *ptr; | |
1003 | struct msn_entry *back = NULL; | |
1004 | char *cp, *sp; | |
1005 | int len; | |
1006 | ||
1007 | if (strlen(list) == 0) { | |
1008 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1009 | if (!ptr) { | |
1010 | printk(KERN_WARNING "kmalloc failed\n"); | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | ptr->msn = NULL; | |
1015 | ||
1016 | ptr->next = dev->msn_list; | |
1017 | dev->msn_list = ptr; | |
1018 | ||
1019 | return; | |
1020 | } | |
1021 | ||
1022 | if (dev->msn_list) | |
1023 | for (back=dev->msn_list; back->next; back=back->next); | |
1024 | ||
1025 | sp = list; | |
1026 | ||
1027 | do { | |
1028 | cp=strchr(sp, ','); | |
1029 | if (cp) | |
1030 | len = cp - sp; | |
1031 | else | |
1032 | len = strlen(sp); | |
1033 | ||
1034 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1035 | ||
1036 | if (!ptr) { | |
1037 | printk(KERN_WARNING "kmalloc failed\n"); | |
1038 | return; | |
1039 | } | |
1040 | ptr->next = NULL; | |
1041 | ||
1042 | ptr->msn = kmalloc(len, GFP_ATOMIC); | |
1043 | if (!ptr->msn) { | |
1044 | printk(KERN_WARNING "kmalloc failed\n"); | |
1045 | kfree(ptr); | |
1046 | return; | |
1047 | } | |
1048 | ||
1049 | memcpy(ptr->msn, sp, len - 1); | |
1050 | ptr->msn[len] = 0; | |
1051 | ||
1052 | #ifdef DEBUG | |
1053 | printk(KERN_DEBUG "msn: %s\n", ptr->msn); | |
1054 | #endif | |
1055 | if (dev->msn_list == NULL) | |
1056 | dev->msn_list = ptr; | |
1057 | else | |
1058 | back->next = ptr; | |
1059 | back = ptr; | |
1060 | sp += len; | |
1061 | } while(cp); | |
1062 | } | |
1063 | ||
1064 | /* | |
1065 | * check if we do signal or reject an incoming call | |
1066 | */ | |
1067 | static int pcbit_check_msn(struct pcbit_dev *dev, char *msn) | |
1068 | { | |
1069 | struct msn_entry *ptr; | |
1070 | ||
1071 | for (ptr=dev->msn_list; ptr; ptr=ptr->next) { | |
1072 | ||
1073 | if (ptr->msn == NULL) | |
1074 | return 1; | |
1075 | ||
1076 | if (strcmp(ptr->msn, msn) == 0) | |
1077 | return 1; | |
1078 | } | |
1079 | ||
1080 | return 0; | |
1081 | } |