Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PCBIT-D interface with isdn4linux | |
3 | * | |
4 | * Copyright (C) 1996 Universidade de Lisboa | |
475be4d8 | 5 | * |
1da177e4 LT |
6 | * Written by Pedro Roque Marques (roque@di.fc.ul.pt) |
7 | * | |
475be4d8 | 8 | * This software may be used and distributed according to the terms of |
1da177e4 LT |
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. | |
475be4d8 | 17 | * |
1da177e4 LT |
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 | ||
475be4d8 | 46 | static int pcbit_ioctl(isdn_ctrl *ctl); |
1da177e4 | 47 | |
475be4d8 | 48 | static char *pcbit_devname[MAX_PCBIT_CARDS] = { |
1da177e4 LT |
49 | "pcbit0", |
50 | "pcbit1", | |
51 | "pcbit2", | |
52 | "pcbit3" | |
53 | }; | |
54 | ||
55 | /* | |
56 | * prototypes | |
57 | */ | |
58 | ||
475be4d8 JP |
59 | static int pcbit_command(isdn_ctrl *ctl); |
60 | static int pcbit_stat(u_char __user *buf, int len, int, int); | |
886cca3a AB |
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 | 63 | |
475be4d8 | 64 | static int set_protocol_running(struct pcbit_dev *dev); |
1da177e4 LT |
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 | ||
475be4d8 | 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 | ||
475be4d8 | 86 | if (mem_base >= 0xA0000 && mem_base <= 0xFFFFF) { |
1da177e4 LT |
87 | dev->ph_mem = mem_base; |
88 | if (!request_mem_region(dev->ph_mem, 4096, "PCBIT mem")) { | |
89 | printk(KERN_WARNING | |
475be4d8 JP |
90 | "PCBIT: memory region %lx-%lx already in use\n", |
91 | dev->ph_mem, dev->ph_mem + 4096); | |
1da177e4 LT |
92 | kfree(dev); |
93 | dev_pcbit[board] = NULL; | |
94 | return -EACCES; | |
95 | } | |
96 | dev->sh_mem = ioremap(dev->ph_mem, 4096); | |
97 | } | |
475be4d8 | 98 | else |
1da177e4 LT |
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 | } | |
475be4d8 | 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 | ||
475be4d8 | 133 | if (request_irq(irq, &pcbit_irq_handler, 0, pcbit_devname[board], dev) != 0) |
1da177e4 LT |
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; | |
475be4d8 JP |
171 | |
172 | dev_if->features = (ISDN_FEATURE_P_EURO | ISDN_FEATURE_L3_TRANS | | |
173 | ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L2_TRANS); | |
1da177e4 LT |
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; | |
475be4d8 | 180 | |
1da177e4 LT |
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 | { | |
475be4d8 | 214 | struct pcbit_dev *dev; |
1da177e4 LT |
215 | |
216 | dev = dev_pcbit[board]; | |
217 | ||
218 | if (dev) { | |
475be4d8 | 219 | /* unregister_isdn(dev->dev_if); */ |
1da177e4 LT |
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 | ||
475be4d8 | 236 | static int pcbit_command(isdn_ctrl *ctl) |
1da177e4 | 237 | { |
475be4d8 | 238 | struct pcbit_dev *dev; |
1da177e4 LT |
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 | ||
475be4d8 | 253 | switch (ctl->command) { |
1da177e4 LT |
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; | |
475be4d8 | 302 | struct pcbit_dev *dev; |
1da177e4 LT |
303 | isdn_ctrl ictl; |
304 | ||
475be4d8 | 305 | chan = (struct pcbit_chan *)data; |
1da177e4 LT |
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"); | |
475be4d8 | 319 | #endif |
1da177e4 LT |
320 | chan->queued = 0; |
321 | ictl.driver = dev->id; | |
322 | ictl.command = ISDN_STAT_BSENT; | |
323 | ictl.arg = chan->id; | |
475be4d8 | 324 | dev->dev_if->statcallb(&ictl); |
1da177e4 LT |
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; | |
475be4d8 | 332 | struct pcbit_chan *chan; |
1da177e4 LT |
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 | ||
475be4d8 | 348 | if (chan->queued >= MAX_QUEUED) |
1da177e4 LT |
349 | { |
350 | #ifdef DEBUG_QUEUE | |
475be4d8 | 351 | printk(KERN_DEBUG |
1da177e4 LT |
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 | } | |
475be4d8 JP |
368 | #endif |
369 | return 0; | |
1da177e4 LT |
370 | } |
371 | ||
372 | ||
373 | chan->queued++; | |
475be4d8 JP |
374 | |
375 | len = skb->len; | |
1da177e4 LT |
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 | 388 | { |
475be4d8 | 389 | struct pcbit_dev *dev; |
1da177e4 | 390 | int i, j; |
475be4d8 JP |
391 | const u_char *loadbuf; |
392 | u_char *ptr = NULL; | |
1da177e4 LT |
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 | ||
475be4d8 | 405 | switch (dev->l2_state) { |
1da177e4 LT |
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 | ||
024cb8a6 JL |
414 | cbuf = memdup_user(buf, len); |
415 | if (IS_ERR(cbuf)) | |
416 | return PTR_ERR(cbuf); | |
1da177e4 | 417 | |
1da177e4 LT |
418 | memcpy_toio(dev->sh_mem, cbuf, len); |
419 | kfree(cbuf); | |
420 | return len; | |
421 | case L2_FWMODE: | |
422 | /* this is the hard part */ | |
423 | /* dumb board */ | |
424 | /* get it into kernel space */ | |
475be4d8 | 425 | if ((ptr = kmalloc(len, GFP_KERNEL)) == NULL) |
1da177e4 LT |
426 | return -ENOMEM; |
427 | if (copy_from_user(ptr, buf, len)) { | |
428 | kfree(ptr); | |
429 | return -EFAULT; | |
430 | } | |
431 | loadbuf = ptr; | |
475be4d8 | 432 | |
1da177e4 LT |
433 | errstat = 0; |
434 | ||
475be4d8 | 435 | for (i = 0; i < len; i++) |
1da177e4 | 436 | { |
475be4d8 | 437 | for (j = 0; j < LOAD_RETRY; j++) |
1da177e4 LT |
438 | if (!(readb(dev->sh_mem + dev->loadptr))) |
439 | break; | |
440 | ||
441 | if (j == LOAD_RETRY) | |
442 | { | |
443 | errstat = -ETIME; | |
444 | printk("TIMEOUT i=%d\n", i); | |
445 | break; | |
446 | } | |
447 | writeb(loadbuf[i], dev->sh_mem + dev->loadptr + 1); | |
448 | writeb(0x01, dev->sh_mem + dev->loadptr); | |
449 | ||
450 | dev->loadptr += 2; | |
451 | if (dev->loadptr > LOAD_ZONE_END) | |
452 | dev->loadptr = LOAD_ZONE_START; | |
453 | } | |
454 | kfree(ptr); | |
455 | ||
456 | return errstat ? errstat : len; | |
457 | default: | |
458 | return -EBUSY; | |
459 | } | |
460 | } | |
461 | ||
462 | /* | |
463 | * demultiplexing of messages | |
464 | * | |
465 | */ | |
466 | ||
475be4d8 JP |
467 | void pcbit_l3_receive(struct pcbit_dev *dev, ulong msg, |
468 | struct sk_buff *skb, | |
469 | ushort hdr_len, ushort refnum) | |
1da177e4 LT |
470 | { |
471 | struct pcbit_chan *chan; | |
472 | struct sk_buff *skb2; | |
473 | unsigned short len; | |
474 | struct callb_data cbdata; | |
475 | int complete, err; | |
476 | isdn_ctrl ictl; | |
477 | ||
475be4d8 | 478 | switch (msg) { |
1da177e4 LT |
479 | |
480 | case MSG_TDATA_IND: | |
481 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 482 | printk(KERN_WARNING |
1da177e4 LT |
483 | "CAPI header: unknown channel id\n"); |
484 | break; | |
485 | } | |
486 | chan->r_refnum = skb->data[7]; | |
487 | skb_pull(skb, 8); | |
488 | ||
489 | dev->dev_if->rcvcallb_skb(dev->id, chan->id, skb); | |
490 | ||
475be4d8 JP |
491 | if (capi_tdata_resp(chan, &skb2) > 0) |
492 | pcbit_l2_write(dev, MSG_TDATA_RESP, refnum, | |
1da177e4 LT |
493 | skb2, skb2->len); |
494 | return; | |
475be4d8 | 495 | break; |
1da177e4 LT |
496 | case MSG_TDATA_CONF: |
497 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 498 | printk(KERN_WARNING |
1da177e4 LT |
499 | "CAPI header: unknown channel id\n"); |
500 | break; | |
501 | } | |
502 | ||
503 | #ifdef DEBUG | |
475be4d8 JP |
504 | if ((*((ushort *)(skb->data + 2))) != 0) { |
505 | printk(KERN_DEBUG "TDATA_CONF error\n"); | |
1da177e4 LT |
506 | } |
507 | #endif | |
508 | #ifdef BLOCK_TIMER | |
475be4d8 JP |
509 | if (chan->queued == MAX_QUEUED) { |
510 | del_timer(&chan->block_timer); | |
1da177e4 LT |
511 | chan->block_timer.function = NULL; |
512 | } | |
475be4d8 JP |
513 | |
514 | #endif | |
1da177e4 LT |
515 | chan->queued--; |
516 | ||
517 | ictl.driver = dev->id; | |
518 | ictl.command = ISDN_STAT_BSENT; | |
519 | ictl.arg = chan->id; | |
520 | dev->dev_if->statcallb(&ictl); | |
521 | break; | |
522 | ||
523 | case MSG_CONN_IND: | |
524 | /* | |
525 | * channel: 1st not used will do | |
475be4d8 | 526 | * if both are used we're in trouble |
1da177e4 LT |
527 | */ |
528 | ||
529 | if (!dev->b1->fsm_state) | |
530 | chan = dev->b1; | |
531 | else if (!dev->b2->fsm_state) | |
532 | chan = dev->b2; | |
533 | else { | |
475be4d8 | 534 | printk(KERN_INFO |
1da177e4 LT |
535 | "Incoming connection: no channels available"); |
536 | ||
475be4d8 | 537 | if ((len = capi_disc_req(*(ushort *)(skb->data), &skb2, CAUSE_NOCHAN)) > 0) |
1da177e4 | 538 | pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb2, len); |
475be4d8 | 539 | break; |
1da177e4 LT |
540 | } |
541 | ||
542 | cbdata.data.setup.CalledPN = NULL; | |
543 | cbdata.data.setup.CallingPN = NULL; | |
544 | ||
545 | capi_decode_conn_ind(chan, skb, &cbdata); | |
546 | cbdata.type = EV_NET_SETUP; | |
547 | ||
548 | pcbit_fsm_event(dev, chan, EV_NET_SETUP, NULL); | |
549 | ||
475be4d8 | 550 | if (pcbit_check_msn(dev, cbdata.data.setup.CallingPN)) |
1da177e4 LT |
551 | pcbit_fsm_event(dev, chan, EV_USR_PROCED_REQ, &cbdata); |
552 | else | |
553 | pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL); | |
554 | ||
3c7208f2 JJ |
555 | kfree(cbdata.data.setup.CalledPN); |
556 | kfree(cbdata.data.setup.CallingPN); | |
1da177e4 | 557 | break; |
475be4d8 | 558 | |
1da177e4 | 559 | case MSG_CONN_CONF: |
475be4d8 | 560 | /* |
1da177e4 LT |
561 | * We should be able to find the channel by the message |
562 | * reference number. The current version of the firmware | |
563 | * doesn't sent the ref number correctly. | |
564 | */ | |
565 | #ifdef DEBUG | |
475be4d8 JP |
566 | printk(KERN_DEBUG "refnum=%04x b1=%04x b2=%04x\n", refnum, |
567 | dev->b1->s_refnum, | |
1da177e4 LT |
568 | dev->b2->s_refnum); |
569 | #endif | |
570 | /* We just try to find a channel in the right state */ | |
571 | ||
572 | if (dev->b1->fsm_state == ST_CALL_INIT) | |
573 | chan = dev->b1; | |
475be4d8 | 574 | else { |
1da177e4 LT |
575 | if (dev->b2->s_refnum == ST_CALL_INIT) |
576 | chan = dev->b2; | |
475be4d8 | 577 | else { |
1da177e4 LT |
578 | chan = NULL; |
579 | printk(KERN_WARNING "Connection Confirm - no channel in Call Init state\n"); | |
580 | break; | |
581 | } | |
582 | } | |
583 | if (capi_decode_conn_conf(chan, skb, &complete)) { | |
584 | printk(KERN_DEBUG "conn_conf indicates error\n"); | |
585 | pcbit_fsm_event(dev, chan, EV_ERROR, NULL); | |
586 | } | |
587 | else | |
588 | if (complete) | |
589 | pcbit_fsm_event(dev, chan, EV_NET_CALL_PROC, NULL); | |
590 | else | |
591 | pcbit_fsm_event(dev, chan, EV_NET_SETUP_ACK, NULL); | |
475be4d8 | 592 | break; |
1da177e4 LT |
593 | case MSG_CONN_ACTV_IND: |
594 | ||
595 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 596 | printk(KERN_WARNING |
1da177e4 LT |
597 | "CAPI header: unknown channel id\n"); |
598 | break; | |
599 | } | |
475be4d8 | 600 | |
1da177e4 LT |
601 | if (capi_decode_conn_actv_ind(chan, skb)) { |
602 | printk("error in capi_decode_conn_actv_ind\n"); | |
475be4d8 | 603 | /* pcbit_fsm_event(dev, chan, EV_ERROR, NULL); */ |
1da177e4 LT |
604 | break; |
605 | } | |
606 | chan->r_refnum = refnum; | |
607 | pcbit_fsm_event(dev, chan, EV_NET_CONN, NULL); | |
608 | break; | |
609 | case MSG_CONN_ACTV_CONF: | |
610 | ||
611 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 612 | printk(KERN_WARNING |
1da177e4 LT |
613 | "CAPI header: unknown channel id\n"); |
614 | break; | |
615 | } | |
616 | ||
617 | if (capi_decode_conn_actv_conf(chan, skb) == 0) | |
618 | pcbit_fsm_event(dev, chan, EV_NET_CONN_ACK, NULL); | |
475be4d8 | 619 | |
1da177e4 LT |
620 | else |
621 | printk(KERN_DEBUG "decode_conn_actv_conf failed\n"); | |
622 | break; | |
623 | ||
624 | case MSG_SELP_CONF: | |
625 | ||
626 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 627 | printk(KERN_WARNING |
1da177e4 LT |
628 | "CAPI header: unknown channel id\n"); |
629 | break; | |
630 | } | |
631 | ||
632 | if (!(err = capi_decode_sel_proto_conf(chan, skb))) | |
633 | pcbit_fsm_event(dev, chan, EV_NET_SELP_RESP, NULL); | |
634 | else { | |
635 | /* Error */ | |
636 | printk("error %d - capi_decode_sel_proto_conf\n", err); | |
637 | } | |
638 | break; | |
639 | case MSG_ACT_TRANSP_CONF: | |
640 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 641 | printk(KERN_WARNING |
1da177e4 LT |
642 | "CAPI header: unknown channel id\n"); |
643 | break; | |
644 | } | |
645 | ||
646 | if (!capi_decode_actv_trans_conf(chan, skb)) | |
647 | pcbit_fsm_event(dev, chan, EV_NET_ACTV_RESP, NULL); | |
648 | break; | |
649 | ||
650 | case MSG_DISC_IND: | |
651 | ||
652 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 653 | printk(KERN_WARNING |
1da177e4 LT |
654 | "CAPI header: unknown channel id\n"); |
655 | break; | |
656 | } | |
657 | ||
658 | if (!capi_decode_disc_ind(chan, skb)) | |
659 | pcbit_fsm_event(dev, chan, EV_NET_DISC, NULL); | |
660 | else | |
661 | printk(KERN_WARNING "capi_decode_disc_ind - error\n"); | |
662 | break; | |
663 | case MSG_DISC_CONF: | |
664 | if (!(chan = capi_channel(dev, skb))) { | |
475be4d8 | 665 | printk(KERN_WARNING |
1da177e4 LT |
666 | "CAPI header: unknown channel id\n"); |
667 | break; | |
668 | } | |
669 | ||
670 | if (!capi_decode_disc_ind(chan, skb)) | |
671 | pcbit_fsm_event(dev, chan, EV_NET_RELEASE, NULL); | |
672 | else | |
673 | printk(KERN_WARNING "capi_decode_disc_conf - error\n"); | |
674 | break; | |
675 | case MSG_INFO_IND: | |
676 | #ifdef DEBUG | |
677 | printk(KERN_DEBUG "received Info Indication - discarded\n"); | |
678 | #endif | |
679 | break; | |
680 | #ifdef DEBUG | |
681 | case MSG_DEBUG_188: | |
682 | capi_decode_debug_188(skb->data, skb->len); | |
683 | break; | |
684 | ||
685 | default: | |
686 | printk(KERN_DEBUG "pcbit_l3_receive: unknown message %08lx\n", | |
687 | msg); | |
688 | break; | |
689 | #endif | |
690 | } | |
691 | ||
692 | kfree_skb(skb); | |
693 | ||
694 | } | |
695 | ||
696 | /* | |
697 | * Single statbuf | |
698 | * should be a statbuf per device | |
699 | */ | |
700 | ||
701 | static char statbuf[STATBUF_LEN]; | |
702 | static int stat_st = 0; | |
703 | static int stat_end = 0; | |
704 | ||
886cca3a | 705 | static int pcbit_stat(u_char __user *buf, int len, int driver, int channel) |
1da177e4 LT |
706 | { |
707 | int stat_count; | |
708 | stat_count = stat_end - stat_st; | |
709 | ||
710 | if (stat_count < 0) | |
711 | stat_count = STATBUF_LEN - stat_st + stat_end; | |
712 | ||
713 | /* FIXME: should we sleep and wait for more cookies ? */ | |
475be4d8 | 714 | if (len > stat_count) |
1da177e4 LT |
715 | len = stat_count; |
716 | ||
717 | if (stat_st < stat_end) | |
718 | { | |
7786ce19 JG |
719 | if (copy_to_user(buf, statbuf + stat_st, len)) |
720 | return -EFAULT; | |
475be4d8 | 721 | stat_st += len; |
1da177e4 LT |
722 | } |
723 | else | |
724 | { | |
725 | if (len > STATBUF_LEN - stat_st) | |
726 | { | |
7786ce19 | 727 | if (copy_to_user(buf, statbuf + stat_st, |
475be4d8 | 728 | STATBUF_LEN - stat_st)) |
7786ce19 JG |
729 | return -EFAULT; |
730 | if (copy_to_user(buf, statbuf, | |
475be4d8 | 731 | len - (STATBUF_LEN - stat_st))) |
7786ce19 | 732 | return -EFAULT; |
1da177e4 LT |
733 | |
734 | stat_st = len - (STATBUF_LEN - stat_st); | |
735 | } | |
736 | else | |
737 | { | |
7786ce19 JG |
738 | if (copy_to_user(buf, statbuf + stat_st, len)) |
739 | return -EFAULT; | |
1da177e4 LT |
740 | |
741 | stat_st += len; | |
475be4d8 | 742 | |
1da177e4 LT |
743 | if (stat_st == STATBUF_LEN) |
744 | stat_st = 0; | |
745 | } | |
746 | } | |
747 | ||
748 | if (stat_st == stat_end) | |
749 | stat_st = stat_end = 0; | |
750 | ||
751 | return len; | |
752 | } | |
753 | ||
754 | static void pcbit_logstat(struct pcbit_dev *dev, char *str) | |
755 | { | |
756 | int i; | |
757 | isdn_ctrl ictl; | |
758 | ||
475be4d8 | 759 | for (i = stat_end; i < strlen(str); i++) |
1da177e4 | 760 | { |
475be4d8 | 761 | statbuf[i] = str[i]; |
1da177e4 LT |
762 | stat_end = (stat_end + 1) % STATBUF_LEN; |
763 | if (stat_end == stat_st) | |
764 | stat_st = (stat_st + 1) % STATBUF_LEN; | |
765 | } | |
766 | ||
475be4d8 JP |
767 | ictl.command = ISDN_STAT_STAVAIL; |
768 | ictl.driver = dev->id; | |
769 | ictl.arg = strlen(str); | |
1da177e4 LT |
770 | dev->dev_if->statcallb(&ictl); |
771 | } | |
475be4d8 JP |
772 | |
773 | void pcbit_state_change(struct pcbit_dev *dev, struct pcbit_chan *chan, | |
1da177e4 LT |
774 | unsigned short i, unsigned short ev, unsigned short f) |
775 | { | |
776 | char buf[256]; | |
475be4d8 | 777 | |
1da177e4 | 778 | sprintf(buf, "change on device: %d channel:%d\n%s -> %s -> %s\n", |
475be4d8 | 779 | dev->id, chan->id, |
1da177e4 LT |
780 | isdn_state_table[i], strisdnevent(ev), isdn_state_table[f] |
781 | ); | |
782 | ||
783 | #ifdef DEBUG | |
784 | printk("%s", buf); | |
785 | #endif | |
786 | ||
787 | pcbit_logstat(dev, buf); | |
788 | } | |
789 | ||
790 | static void set_running_timeout(unsigned long ptr) | |
791 | { | |
475be4d8 | 792 | struct pcbit_dev *dev; |
1da177e4 LT |
793 | |
794 | #ifdef DEBUG | |
795 | printk(KERN_DEBUG "set_running_timeout\n"); | |
796 | #endif | |
797 | dev = (struct pcbit_dev *) ptr; | |
798 | ||
799 | wake_up_interruptible(&dev->set_running_wq); | |
800 | } | |
801 | ||
475be4d8 | 802 | static int set_protocol_running(struct pcbit_dev *dev) |
1da177e4 LT |
803 | { |
804 | isdn_ctrl ctl; | |
805 | ||
806 | init_timer(&dev->set_running_timer); | |
807 | ||
808 | dev->set_running_timer.function = &set_running_timeout; | |
809 | dev->set_running_timer.data = (ulong) dev; | |
810 | dev->set_running_timer.expires = jiffies + SET_RUN_TIMEOUT; | |
811 | ||
812 | /* kick it */ | |
813 | ||
814 | dev->l2_state = L2_STARTING; | |
815 | ||
475be4d8 | 816 | writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)), |
1da177e4 LT |
817 | dev->sh_mem + BANK4); |
818 | ||
819 | add_timer(&dev->set_running_timer); | |
820 | ||
821 | interruptible_sleep_on(&dev->set_running_wq); | |
822 | ||
823 | del_timer(&dev->set_running_timer); | |
824 | ||
825 | if (dev->l2_state == L2_RUNNING) | |
826 | { | |
827 | printk(KERN_DEBUG "pcbit: running\n"); | |
828 | ||
829 | dev->unack_seq = dev->send_seq; | |
830 | ||
831 | dev->writeptr = dev->sh_mem; | |
832 | dev->readptr = dev->sh_mem + BANK2; | |
475be4d8 JP |
833 | |
834 | /* tell the good news to the upper layer */ | |
1da177e4 LT |
835 | ctl.driver = dev->id; |
836 | ctl.command = ISDN_STAT_RUN; | |
837 | ||
838 | dev->dev_if->statcallb(&ctl); | |
839 | } | |
840 | else | |
841 | { | |
842 | printk(KERN_DEBUG "pcbit: initialization failed\n"); | |
843 | printk(KERN_DEBUG "pcbit: firmware not loaded\n"); | |
844 | ||
845 | dev->l2_state = L2_DOWN; | |
846 | ||
847 | #ifdef DEBUG | |
475be4d8 | 848 | printk(KERN_DEBUG "Bank3 = %02x\n", |
1da177e4 LT |
849 | readb(dev->sh_mem + BANK3)); |
850 | #endif | |
851 | writeb(0x40, dev->sh_mem + BANK4); | |
852 | ||
853 | /* warn the upper layer */ | |
854 | ctl.driver = dev->id; | |
855 | ctl.command = ISDN_STAT_STOP; | |
856 | ||
857 | dev->dev_if->statcallb(&ctl); | |
858 | ||
859 | return -EL2HLT; /* Level 2 halted */ | |
860 | } | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
475be4d8 | 865 | static int pcbit_ioctl(isdn_ctrl *ctl) |
1da177e4 | 866 | { |
475be4d8 | 867 | struct pcbit_dev *dev; |
1da177e4 LT |
868 | struct pcbit_ioctl *cmd; |
869 | ||
870 | dev = finddev(ctl->driver); | |
475be4d8 | 871 | |
1da177e4 LT |
872 | if (!dev) |
873 | { | |
874 | printk(KERN_DEBUG "pcbit_ioctl: unknown device\n"); | |
875 | return -ENODEV; | |
876 | } | |
877 | ||
878 | cmd = (struct pcbit_ioctl *) ctl->parm.num; | |
879 | ||
475be4d8 | 880 | switch (ctl->arg) { |
1da177e4 LT |
881 | case PCBIT_IOCTL_GETSTAT: |
882 | cmd->info.l2_status = dev->l2_state; | |
883 | break; | |
884 | ||
885 | case PCBIT_IOCTL_STRLOAD: | |
886 | if (dev->l2_state == L2_RUNNING) | |
887 | return -EBUSY; | |
888 | ||
889 | dev->unack_seq = dev->send_seq = dev->rcv_seq = 0; | |
890 | ||
891 | dev->writeptr = dev->sh_mem; | |
892 | dev->readptr = dev->sh_mem + BANK2; | |
475be4d8 | 893 | |
1da177e4 LT |
894 | dev->l2_state = L2_LOADING; |
895 | break; | |
896 | ||
897 | case PCBIT_IOCTL_LWMODE: | |
898 | if (dev->l2_state != L2_LOADING) | |
899 | return -EINVAL; | |
900 | ||
901 | dev->l2_state = L2_LWMODE; | |
902 | break; | |
903 | ||
904 | case PCBIT_IOCTL_FWMODE: | |
905 | if (dev->l2_state == L2_RUNNING) | |
906 | return -EBUSY; | |
907 | dev->loadptr = LOAD_ZONE_START; | |
908 | dev->l2_state = L2_FWMODE; | |
909 | ||
475be4d8 | 910 | break; |
1da177e4 LT |
911 | case PCBIT_IOCTL_ENDLOAD: |
912 | if (dev->l2_state == L2_RUNNING) | |
913 | return -EBUSY; | |
914 | dev->l2_state = L2_DOWN; | |
475be4d8 | 915 | break; |
1da177e4 | 916 | |
475be4d8 | 917 | case PCBIT_IOCTL_SETBYTE: |
1da177e4 LT |
918 | if (dev->l2_state == L2_RUNNING) |
919 | return -EBUSY; | |
920 | ||
921 | /* check addr */ | |
922 | if (cmd->info.rdp_byte.addr > BANK4) | |
923 | return -EFAULT; | |
475be4d8 | 924 | |
1da177e4 LT |
925 | writeb(cmd->info.rdp_byte.value, dev->sh_mem + cmd->info.rdp_byte.addr); |
926 | break; | |
927 | case PCBIT_IOCTL_GETBYTE: | |
928 | if (dev->l2_state == L2_RUNNING) | |
929 | return -EBUSY; | |
930 | ||
931 | /* check addr */ | |
932 | ||
933 | if (cmd->info.rdp_byte.addr > BANK4) | |
934 | { | |
935 | printk("getbyte: invalid addr %04x\n", cmd->info.rdp_byte.addr); | |
936 | return -EFAULT; | |
937 | } | |
475be4d8 JP |
938 | |
939 | cmd->info.rdp_byte.value = readb(dev->sh_mem + cmd->info.rdp_byte.addr); | |
1da177e4 | 940 | break; |
475be4d8 | 941 | case PCBIT_IOCTL_RUNNING: |
1da177e4 LT |
942 | if (dev->l2_state == L2_RUNNING) |
943 | return -EBUSY; | |
944 | return set_protocol_running(dev); | |
945 | break; | |
946 | case PCBIT_IOCTL_WATCH188: | |
947 | if (dev->l2_state != L2_LOADING) | |
948 | return -EINVAL; | |
949 | pcbit_l2_write(dev, MSG_WATCH188, 0x0001, NULL, 0); | |
950 | break; | |
951 | case PCBIT_IOCTL_PING188: | |
952 | if (dev->l2_state != L2_LOADING) | |
953 | return -EINVAL; | |
954 | pcbit_l2_write(dev, MSG_PING188_REQ, 0x0001, NULL, 0); | |
955 | break; | |
956 | case PCBIT_IOCTL_APION: | |
957 | if (dev->l2_state != L2_LOADING) | |
958 | return -EINVAL; | |
959 | pcbit_l2_write(dev, MSG_API_ON, 0x0001, NULL, 0); | |
960 | break; | |
961 | case PCBIT_IOCTL_STOP: | |
962 | dev->l2_state = L2_DOWN; | |
963 | writeb(0x40, dev->sh_mem + BANK4); | |
964 | dev->rcv_seq = 0; | |
965 | dev->send_seq = 0; | |
966 | dev->unack_seq = 0; | |
967 | break; | |
968 | default: | |
969 | printk("error: unknown ioctl\n"); | |
970 | break; | |
971 | }; | |
972 | return 0; | |
973 | } | |
974 | ||
475be4d8 | 975 | /* |
1da177e4 LT |
976 | * MSN list handling |
977 | * | |
978 | * if null reject all calls | |
475be4d8 | 979 | * if first entry has null MSN accept all calls |
1da177e4 LT |
980 | */ |
981 | ||
982 | static void pcbit_clear_msn(struct pcbit_dev *dev) | |
983 | { | |
984 | struct msn_entry *ptr, *back; | |
985 | ||
475be4d8 | 986 | for (ptr = dev->msn_list; ptr;) |
1da177e4 LT |
987 | { |
988 | back = ptr->next; | |
989 | kfree(ptr); | |
990 | ptr = back; | |
991 | } | |
992 | ||
475be4d8 | 993 | dev->msn_list = NULL; |
1da177e4 LT |
994 | } |
995 | ||
996 | static void pcbit_set_msn(struct pcbit_dev *dev, char *list) | |
997 | { | |
998 | struct msn_entry *ptr; | |
999 | struct msn_entry *back = NULL; | |
1000 | char *cp, *sp; | |
1001 | int len; | |
1002 | ||
1003 | if (strlen(list) == 0) { | |
1004 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1005 | if (!ptr) { | |
1006 | printk(KERN_WARNING "kmalloc failed\n"); | |
1007 | return; | |
1008 | } | |
1009 | ||
1010 | ptr->msn = NULL; | |
1011 | ||
1012 | ptr->next = dev->msn_list; | |
1013 | dev->msn_list = ptr; | |
1014 | ||
1015 | return; | |
1016 | } | |
1017 | ||
1018 | if (dev->msn_list) | |
475be4d8 JP |
1019 | for (back = dev->msn_list; back->next; back = back->next); |
1020 | ||
1da177e4 LT |
1021 | sp = list; |
1022 | ||
1023 | do { | |
475be4d8 | 1024 | cp = strchr(sp, ','); |
1da177e4 LT |
1025 | if (cp) |
1026 | len = cp - sp; | |
1027 | else | |
1028 | len = strlen(sp); | |
1029 | ||
1030 | ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC); | |
1031 | ||
1032 | if (!ptr) { | |
1033 | printk(KERN_WARNING "kmalloc failed\n"); | |
1034 | return; | |
1035 | } | |
1036 | ptr->next = NULL; | |
475be4d8 | 1037 | |
1da177e4 LT |
1038 | ptr->msn = kmalloc(len, GFP_ATOMIC); |
1039 | if (!ptr->msn) { | |
1040 | printk(KERN_WARNING "kmalloc failed\n"); | |
1041 | kfree(ptr); | |
1042 | return; | |
1043 | } | |
1044 | ||
1045 | memcpy(ptr->msn, sp, len - 1); | |
1046 | ptr->msn[len] = 0; | |
1047 | ||
1048 | #ifdef DEBUG | |
1049 | printk(KERN_DEBUG "msn: %s\n", ptr->msn); | |
1050 | #endif | |
1051 | if (dev->msn_list == NULL) | |
1052 | dev->msn_list = ptr; | |
1053 | else | |
1054 | back->next = ptr; | |
1055 | back = ptr; | |
1056 | sp += len; | |
475be4d8 | 1057 | } while (cp); |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | /* | |
1061 | * check if we do signal or reject an incoming call | |
1062 | */ | |
1063 | static int pcbit_check_msn(struct pcbit_dev *dev, char *msn) | |
1064 | { | |
1065 | struct msn_entry *ptr; | |
1da177e4 | 1066 | |
475be4d8 JP |
1067 | for (ptr = dev->msn_list; ptr; ptr = ptr->next) { |
1068 | ||
1069 | if (ptr->msn == NULL) | |
1da177e4 | 1070 | return 1; |
475be4d8 | 1071 | |
1da177e4 LT |
1072 | if (strcmp(ptr->msn, msn) == 0) |
1073 | return 1; | |
1074 | } | |
1075 | ||
1076 | return 0; | |
1077 | } |