[PATCH] g_file_storage: fix obscure race condition
[linux/fpc-iii.git] / drivers / isdn / sc / ioctl.c
blob3314a5a19854239f2bf335102c4e6f1c6dabfa97
1 /*
2 * Copyright (C) 1996 SpellCaster Telecommunications Inc.
4 * This software may be used and distributed according to the terms
5 * of the GNU General Public License, incorporated herein by reference.
7 */
9 #include "includes.h"
10 #include "hardware.h"
11 #include "message.h"
12 #include "card.h"
13 #include "scioc.h"
15 extern int indicate_status(int, int, unsigned long, char *);
16 extern int startproc(int);
17 extern int reset(int);
18 extern int send_and_receive(int, unsigned int, unsigned char,unsigned char,
19 unsigned char,unsigned char,
20 unsigned char, unsigned char *, RspMessage *, int);
22 extern board *sc_adapter[];
25 static int GetStatus(int card, boardInfo *);
28 * Process private IOCTL messages (typically from scctrl)
30 int sc_ioctl(int card, scs_ioctl *data)
32 int status;
33 RspMessage *rcvmsg;
34 char *spid;
35 char *dn;
36 char switchtype;
37 char speed;
39 rcvmsg = kmalloc(sizeof(RspMessage), GFP_KERNEL);
40 if (!rcvmsg)
41 return -ENOMEM;
43 switch(data->command) {
44 case SCIOCRESET: /* Perform a hard reset of the adapter */
46 pr_debug("%s: SCIOCRESET: ioctl received\n",
47 sc_adapter[card]->devicename);
48 sc_adapter[card]->StartOnReset = 0;
49 return (reset(card));
52 case SCIOCLOAD:
54 char *srec;
56 srec = kmalloc(SCIOC_SRECSIZE, GFP_KERNEL);
57 if (!srec) {
58 kfree(rcvmsg);
59 return -ENOMEM;
61 pr_debug("%s: SCIOLOAD: ioctl received\n",
62 sc_adapter[card]->devicename);
63 if(sc_adapter[card]->EngineUp) {
64 pr_debug("%s: SCIOCLOAD: command failed, LoadProc while engine running.\n",
65 sc_adapter[card]->devicename);
66 kfree(rcvmsg);
67 kfree(srec);
68 return -1;
72 * Get the SRec from user space
74 if (copy_from_user(srec, data->dataptr, sizeof(srec))) {
75 kfree(rcvmsg);
76 kfree(srec);
77 return -EFAULT;
80 status = send_and_receive(card, CMPID, cmReqType2, cmReqClass0, cmReqLoadProc,
81 0, sizeof(srec), srec, rcvmsg, SAR_TIMEOUT);
82 kfree(rcvmsg);
83 kfree(srec);
85 if(status) {
86 pr_debug("%s: SCIOCLOAD: command failed, status = %d\n",
87 sc_adapter[card]->devicename, status);
88 return -1;
90 else {
91 pr_debug("%s: SCIOCLOAD: command successful\n",
92 sc_adapter[card]->devicename);
93 return 0;
97 case SCIOCSTART:
99 pr_debug("%s: SCIOSTART: ioctl received\n",
100 sc_adapter[card]->devicename);
101 if(sc_adapter[card]->EngineUp) {
102 pr_debug("%s: SCIOCSTART: command failed, engine already running.\n",
103 sc_adapter[card]->devicename);
104 return -1;
107 sc_adapter[card]->StartOnReset = 1;
108 startproc(card);
109 return 0;
112 case SCIOCSETSWITCH:
114 pr_debug("%s: SCIOSETSWITCH: ioctl received\n",
115 sc_adapter[card]->devicename);
118 * Get the switch type from user space
120 if (copy_from_user(&switchtype, data->dataptr, sizeof(char))) {
121 kfree(rcvmsg);
122 return -EFAULT;
125 pr_debug("%s: SCIOCSETSWITCH: setting switch type to %d\n",
126 sc_adapter[card]->devicename,
127 switchtype);
128 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallSetSwitchType,
129 0, sizeof(char),&switchtype, rcvmsg, SAR_TIMEOUT);
130 if(!status && !(rcvmsg->rsp_status)) {
131 pr_debug("%s: SCIOCSETSWITCH: command successful\n",
132 sc_adapter[card]->devicename);
133 kfree(rcvmsg);
134 return 0;
136 else {
137 pr_debug("%s: SCIOCSETSWITCH: command failed (status = %d)\n",
138 sc_adapter[card]->devicename, status);
139 kfree(rcvmsg);
140 return status;
144 case SCIOCGETSWITCH:
146 pr_debug("%s: SCIOGETSWITCH: ioctl received\n",
147 sc_adapter[card]->devicename);
150 * Get the switch type from the board
152 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
153 ceReqCallGetSwitchType, 0, 0, NULL, rcvmsg, SAR_TIMEOUT);
154 if (!status && !(rcvmsg->rsp_status)) {
155 pr_debug("%s: SCIOCGETSWITCH: command successful\n",
156 sc_adapter[card]->devicename);
158 else {
159 pr_debug("%s: SCIOCGETSWITCH: command failed (status = %d)\n",
160 sc_adapter[card]->devicename, status);
161 kfree(rcvmsg);
162 return status;
165 switchtype = rcvmsg->msg_data.byte_array[0];
168 * Package the switch type and send to user space
170 if (copy_to_user(data->dataptr, &switchtype,
171 sizeof(char))) {
172 kfree(rcvmsg);
173 return -EFAULT;
176 kfree(rcvmsg);
177 return 0;
180 case SCIOCGETSPID:
182 pr_debug("%s: SCIOGETSPID: ioctl received\n",
183 sc_adapter[card]->devicename);
185 spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
186 if(!spid) {
187 kfree(rcvmsg);
188 return -ENOMEM;
191 * Get the spid from the board
193 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetSPID,
194 data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
195 if (!status) {
196 pr_debug("%s: SCIOCGETSPID: command successful\n",
197 sc_adapter[card]->devicename);
199 else {
200 pr_debug("%s: SCIOCGETSPID: command failed (status = %d)\n",
201 sc_adapter[card]->devicename, status);
202 kfree(rcvmsg);
203 return status;
205 strcpy(spid, rcvmsg->msg_data.byte_array);
208 * Package the switch type and send to user space
210 if (copy_to_user(data->dataptr, spid, SCIOC_SPIDSIZE)) {
211 kfree(spid);
212 kfree(rcvmsg);
213 return -EFAULT;
216 kfree(spid);
217 kfree(rcvmsg);
218 return 0;
221 case SCIOCSETSPID:
223 pr_debug("%s: DCBIOSETSPID: ioctl received\n",
224 sc_adapter[card]->devicename);
226 spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
227 if(!spid) {
228 kfree(rcvmsg);
229 return -ENOMEM;
233 * Get the spid from user space
235 if (copy_from_user(spid, data->dataptr, SCIOC_SPIDSIZE)) {
236 kfree(rcvmsg);
237 return -EFAULT;
240 pr_debug("%s: SCIOCSETSPID: setting channel %d spid to %s\n",
241 sc_adapter[card]->devicename, data->channel, spid);
242 status = send_and_receive(card, CEPID, ceReqTypeCall,
243 ceReqClass0, ceReqCallSetSPID, data->channel,
244 strlen(spid), spid, rcvmsg, SAR_TIMEOUT);
245 if(!status && !(rcvmsg->rsp_status)) {
246 pr_debug("%s: SCIOCSETSPID: command successful\n",
247 sc_adapter[card]->devicename);
248 kfree(rcvmsg);
249 kfree(spid);
250 return 0;
252 else {
253 pr_debug("%s: SCIOCSETSPID: command failed (status = %d)\n",
254 sc_adapter[card]->devicename, status);
255 kfree(rcvmsg);
256 kfree(spid);
257 return status;
261 case SCIOCGETDN:
263 pr_debug("%s: SCIOGETDN: ioctl received\n",
264 sc_adapter[card]->devicename);
267 * Get the dn from the board
269 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetMyNumber,
270 data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
271 if (!status) {
272 pr_debug("%s: SCIOCGETDN: command successful\n",
273 sc_adapter[card]->devicename);
275 else {
276 pr_debug("%s: SCIOCGETDN: command failed (status = %d)\n",
277 sc_adapter[card]->devicename, status);
278 kfree(rcvmsg);
279 return status;
282 dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
283 if (!dn) {
284 kfree(rcvmsg);
285 return -ENOMEM;
287 strcpy(dn, rcvmsg->msg_data.byte_array);
288 kfree(rcvmsg);
291 * Package the dn and send to user space
293 if (copy_to_user(data->dataptr, dn, SCIOC_DNSIZE)) {
294 kfree(dn);
295 return -EFAULT;
297 kfree(dn);
298 return 0;
301 case SCIOCSETDN:
303 pr_debug("%s: SCIOSETDN: ioctl received\n",
304 sc_adapter[card]->devicename);
306 dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
307 if (!dn) {
308 kfree(rcvmsg);
309 return -ENOMEM;
312 * Get the spid from user space
314 if (copy_from_user(dn, data->dataptr, SCIOC_DNSIZE)) {
315 kfree(rcvmsg);
316 kfree(dn);
317 return -EFAULT;
320 pr_debug("%s: SCIOCSETDN: setting channel %d dn to %s\n",
321 sc_adapter[card]->devicename, data->channel, dn);
322 status = send_and_receive(card, CEPID, ceReqTypeCall,
323 ceReqClass0, ceReqCallSetMyNumber, data->channel,
324 strlen(dn),dn,rcvmsg, SAR_TIMEOUT);
325 if(!status && !(rcvmsg->rsp_status)) {
326 pr_debug("%s: SCIOCSETDN: command successful\n",
327 sc_adapter[card]->devicename);
328 kfree(rcvmsg);
329 kfree(dn);
330 return 0;
332 else {
333 pr_debug("%s: SCIOCSETDN: command failed (status = %d)\n",
334 sc_adapter[card]->devicename, status);
335 kfree(rcvmsg);
336 kfree(dn);
337 return status;
341 case SCIOCTRACE:
343 pr_debug("%s: SCIOTRACE: ioctl received\n",
344 sc_adapter[card]->devicename);
345 /* sc_adapter[card]->trace = !sc_adapter[card]->trace;
346 pr_debug("%s: SCIOCTRACE: tracing turned %s\n",
347 sc_adapter[card]->devicename,
348 sc_adapter[card]->trace ? "ON" : "OFF"); */
349 break;
351 case SCIOCSTAT:
353 boardInfo *bi;
355 pr_debug("%s: SCIOSTAT: ioctl received\n",
356 sc_adapter[card]->devicename);
358 bi = kmalloc (sizeof(boardInfo), GFP_KERNEL);
359 if (!bi) {
360 kfree(rcvmsg);
361 return -ENOMEM;
364 kfree(rcvmsg);
365 GetStatus(card, bi);
367 if (copy_to_user(data->dataptr, bi, sizeof(boardInfo))) {
368 kfree(bi);
369 return -EFAULT;
372 kfree(bi);
373 return 0;
376 case SCIOCGETSPEED:
378 pr_debug("%s: SCIOGETSPEED: ioctl received\n",
379 sc_adapter[card]->devicename);
382 * Get the speed from the board
384 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
385 ceReqCallGetCallType, data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
386 if (!status && !(rcvmsg->rsp_status)) {
387 pr_debug("%s: SCIOCGETSPEED: command successful\n",
388 sc_adapter[card]->devicename);
390 else {
391 pr_debug("%s: SCIOCGETSPEED: command failed (status = %d)\n",
392 sc_adapter[card]->devicename, status);
393 kfree(rcvmsg);
394 return status;
397 speed = rcvmsg->msg_data.byte_array[0];
399 kfree(rcvmsg);
402 * Package the switch type and send to user space
405 if (copy_to_user(data->dataptr, &speed, sizeof(char)))
406 return -EFAULT;
408 return 0;
411 case SCIOCSETSPEED:
412 pr_debug("%s: SCIOCSETSPEED: ioctl received\n",
413 sc_adapter[card]->devicename);
414 break;
416 case SCIOCLOOPTST:
417 pr_debug("%s: SCIOCLOOPTST: ioctl received\n",
418 sc_adapter[card]->devicename);
419 break;
421 default:
422 kfree(rcvmsg);
423 return -1;
426 kfree(rcvmsg);
427 return 0;
430 static int GetStatus(int card, boardInfo *bi)
432 RspMessage rcvmsg;
433 int i, status;
436 * Fill in some of the basic info about the board
438 bi->modelid = sc_adapter[card]->model;
439 strcpy(bi->serial_no, sc_adapter[card]->hwconfig.serial_no);
440 strcpy(bi->part_no, sc_adapter[card]->hwconfig.part_no);
441 bi->iobase = sc_adapter[card]->iobase;
442 bi->rambase = sc_adapter[card]->rambase;
443 bi->irq = sc_adapter[card]->interrupt;
444 bi->ramsize = sc_adapter[card]->hwconfig.ram_size;
445 bi->interface = sc_adapter[card]->hwconfig.st_u_sense;
446 strcpy(bi->load_ver, sc_adapter[card]->load_ver);
447 strcpy(bi->proc_ver, sc_adapter[card]->proc_ver);
450 * Get the current PhyStats and LnkStats
452 status = send_and_receive(card, CEPID, ceReqTypePhy, ceReqClass2,
453 ceReqPhyStatus, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
454 if(!status) {
455 if(sc_adapter[card]->model < PRI_BOARD) {
456 bi->l1_status = rcvmsg.msg_data.byte_array[2];
457 for(i = 0 ; i < BRI_CHANNELS ; i++)
458 bi->status.bristats[i].phy_stat =
459 rcvmsg.msg_data.byte_array[i];
461 else {
462 bi->l1_status = rcvmsg.msg_data.byte_array[0];
463 bi->l2_status = rcvmsg.msg_data.byte_array[1];
464 for(i = 0 ; i < PRI_CHANNELS ; i++)
465 bi->status.pristats[i].phy_stat =
466 rcvmsg.msg_data.byte_array[i+2];
471 * Get the call types for each channel
473 for (i = 0 ; i < sc_adapter[card]->nChannels ; i++) {
474 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
475 ceReqCallGetCallType, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
476 if(!status) {
477 if (sc_adapter[card]->model == PRI_BOARD) {
478 bi->status.pristats[i].call_type =
479 rcvmsg.msg_data.byte_array[0];
481 else {
482 bi->status.bristats[i].call_type =
483 rcvmsg.msg_data.byte_array[0];
489 * If PRI, get the call states and service states for each channel
491 if (sc_adapter[card]->model == PRI_BOARD) {
493 * Get the call states
495 status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
496 ceReqPhyChCallState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
497 if(!status) {
498 for( i = 0 ; i < PRI_CHANNELS ; i++ )
499 bi->status.pristats[i].call_state =
500 rcvmsg.msg_data.byte_array[i];
504 * Get the service states
506 status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
507 ceReqPhyChServState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
508 if(!status) {
509 for( i = 0 ; i < PRI_CHANNELS ; i++ )
510 bi->status.pristats[i].serv_state =
511 rcvmsg.msg_data.byte_array[i];
515 * Get the link stats for the channels
517 for (i = 1 ; i <= PRI_CHANNELS ; i++) {
518 status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
519 ceReqLnkGetStats, i, 0, NULL, &rcvmsg, SAR_TIMEOUT);
520 if (!status) {
521 bi->status.pristats[i-1].link_stats.tx_good =
522 (unsigned long)rcvmsg.msg_data.byte_array[0];
523 bi->status.pristats[i-1].link_stats.tx_bad =
524 (unsigned long)rcvmsg.msg_data.byte_array[4];
525 bi->status.pristats[i-1].link_stats.rx_good =
526 (unsigned long)rcvmsg.msg_data.byte_array[8];
527 bi->status.pristats[i-1].link_stats.rx_bad =
528 (unsigned long)rcvmsg.msg_data.byte_array[12];
533 * Link stats for the D channel
535 status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
536 ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
537 if (!status) {
538 bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
539 bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
540 bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
541 bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
544 return 0;
548 * If BRI or POTS, Get SPID, DN and call types for each channel
552 * Get the link stats for the channels
554 status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
555 ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
556 if (!status) {
557 bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
558 bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
559 bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
560 bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
561 bi->status.bristats[0].link_stats.tx_good =
562 (unsigned long)rcvmsg.msg_data.byte_array[16];
563 bi->status.bristats[0].link_stats.tx_bad =
564 (unsigned long)rcvmsg.msg_data.byte_array[20];
565 bi->status.bristats[0].link_stats.rx_good =
566 (unsigned long)rcvmsg.msg_data.byte_array[24];
567 bi->status.bristats[0].link_stats.rx_bad =
568 (unsigned long)rcvmsg.msg_data.byte_array[28];
569 bi->status.bristats[1].link_stats.tx_good =
570 (unsigned long)rcvmsg.msg_data.byte_array[32];
571 bi->status.bristats[1].link_stats.tx_bad =
572 (unsigned long)rcvmsg.msg_data.byte_array[36];
573 bi->status.bristats[1].link_stats.rx_good =
574 (unsigned long)rcvmsg.msg_data.byte_array[40];
575 bi->status.bristats[1].link_stats.rx_bad =
576 (unsigned long)rcvmsg.msg_data.byte_array[44];
580 * Get the SPIDs
582 for (i = 0 ; i < BRI_CHANNELS ; i++) {
583 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
584 ceReqCallGetSPID, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
585 if (!status)
586 strcpy(bi->status.bristats[i].spid, rcvmsg.msg_data.byte_array);
590 * Get the DNs
592 for (i = 0 ; i < BRI_CHANNELS ; i++) {
593 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
594 ceReqCallGetMyNumber, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
595 if (!status)
596 strcpy(bi->status.bristats[i].dn, rcvmsg.msg_data.byte_array);
599 return 0;