40 /* ------------------------------------------------------------- */
45 	u32 controller;  member
48 /* ------------------------------------------------------------- */
63 /* -------- controller ref counting -------------------------------------- */
68 	if (!try_module_get(ctr->owner))  in capi_ctr_get()
76 	module_put(ctr->owner);  in capi_ctr_put()
79 /* ------------------------------------------------------------- */
83 	if (contr < 1 || contr - 1 >= CAPI_MAXCONTR)  in get_capi_ctr_by_nr()
86 	return capi_controller[contr - 1];  in get_capi_ctr_by_nr()
93 	if (applid < 1 || applid - 1 >= CAPI_MAXAPPL)  in __get_capi_appl_by_nr()
96 	return capi_applications[applid - 1];  in __get_capi_appl_by_nr()
101 	if (applid < 1 || applid - 1 >= CAPI_MAXAPPL)  in get_capi_appl_by_nr()
104 	return rcu_dereference(capi_applications[applid - 1]);  in get_capi_appl_by_nr()
107 /* -------- util functions ------------------------------------ */
144 /* ------------------------------------------------------------ */
152 		ctr->register_appl(ctr, applid, rparam);  in register_appl()
154 		printk(KERN_WARNING "%s: cannot get controller resources\n",  in register_appl()
163 	ctr->release_appl(ctr, applid);  in release_appl()
180 		if (ctr->state == CAPI_CTR_RUNNING)  in notify_up()
183 		ctr->state = CAPI_CTR_RUNNING;  in notify_up()
188 				register_appl(ctr, applid, &ap->rparam);  in notify_up()
202 	if (ctr->state == CAPI_CTR_DETECTED || ctr->state == CAPI_CTR_DETACHED)  in ctr_down()
205 	ctr->state = new_state;  in ctr_down()
207 	memset(ctr->manu, 0, sizeof(ctr->manu));  in ctr_down()
208 	memset(&ctr->version, 0, sizeof(ctr->version));  in ctr_down()
209 	memset(&ctr->profile, 0, sizeof(ctr->profile));  in ctr_down()
210 	memset(ctr->serial, 0, sizeof(ctr->serial));  in ctr_down()
242 	switch (event->type) {  in do_notify_work()
244 		notify_up(event->controller);  in do_notify_work()
247 		notify_down(event->controller);  in do_notify_work()
254 static int notify_push(unsigned int event_type, u32 controller)  in notify_push()  argument
259 		return -ENOMEM;  in notify_push()
261 	INIT_WORK(&event->work, do_notify_work);  in notify_push()
262 	event->type = event_type;  in notify_push()
263 	event->controller = controller;  in notify_push()
265 	queue_work(kcapi_wq, &event->work);  in notify_push()
269 /* -------- Receiver ------------------------------------------ */
277 	if ((!ap) || (ap->release_in_progress))  in recv_handler()
280 	mutex_lock(&ap->recv_mtx);  in recv_handler()
281 	while ((skb = skb_dequeue(&ap->recv_queue))) {  in recv_handler()
282 		if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND)  in recv_handler()
283 			ap->nrecvdatapkt++;  in recv_handler()
285 			ap->nrecvctlpkt++;  in recv_handler()
287 		ap->recv_message(ap, skb);  in recv_handler()
289 	mutex_unlock(&ap->recv_mtx);  in recv_handler()
293  * capi_ctr_handle_message() - handle incoming CAPI message
294  * @ctr:	controller descriptor structure.
309 	if (ctr->state != CAPI_CTR_RUNNING) {  in capi_ctr_handle_message()
310 		cdb = capi_message2str(skb->data);  in capi_ctr_handle_message()
312 			printk(KERN_INFO "kcapi: controller [%03d] not active, got: %s",  in capi_ctr_handle_message()
313 			       ctr->cnr, cdb->buf);  in capi_ctr_handle_message()
316 			printk(KERN_INFO "kcapi: controller [%03d] not active, cannot trace\n",  in capi_ctr_handle_message()
317 			       ctr->cnr);  in capi_ctr_handle_message()
321 	cmd = CAPIMSG_COMMAND(skb->data);  in capi_ctr_handle_message()
322 	subcmd = CAPIMSG_SUBCOMMAND(skb->data);  in capi_ctr_handle_message()
324 		ctr->nrecvdatapkt++;  in capi_ctr_handle_message()
325 		if (ctr->traceflag > 2)  in capi_ctr_handle_message()
328 		ctr->nrecvctlpkt++;  in capi_ctr_handle_message()
329 		if (ctr->traceflag)  in capi_ctr_handle_message()
332 	showctl |= (ctr->traceflag & 1);  in capi_ctr_handle_message()
336 			       ctr->cnr, CAPIMSG_APPID(skb->data),  in capi_ctr_handle_message()
338 			       CAPIMSG_LEN(skb->data));  in capi_ctr_handle_message()
340 			cdb = capi_message2str(skb->data);  in capi_ctr_handle_message()
343 				       ctr->cnr, cdb->buf);  in capi_ctr_handle_message()
347 				       ctr->cnr, CAPIMSG_APPID(skb->data),  in capi_ctr_handle_message()
349 				       CAPIMSG_LEN(skb->data));  in capi_ctr_handle_message()
355 	ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data));  in capi_ctr_handle_message()
358 		cdb = capi_message2str(skb->data);  in capi_ctr_handle_message()
361 			       CAPIMSG_APPID(skb->data), cdb->buf);  in capi_ctr_handle_message()
365 			       CAPIMSG_APPID(skb->data),  in capi_ctr_handle_message()
369 	skb_queue_tail(&ap->recv_queue, skb);  in capi_ctr_handle_message()
370 	queue_work(kcapi_wq, &ap->recv_work);  in capi_ctr_handle_message()
382  * capi_ctr_ready() - signal CAPI controller ready
383  * @ctr:	controller descriptor structure.
385  * Called by hardware driver to signal that the controller is up and running.
390 	printk(KERN_NOTICE "kcapi: controller [%03d] \"%s\" ready.\n",  in capi_ctr_ready()
391 	       ctr->cnr, ctr->name);  in capi_ctr_ready()
393 	notify_push(CAPICTR_UP, ctr->cnr);  in capi_ctr_ready()
399  * capi_ctr_down() - signal CAPI controller not ready
400  * @ctr:	controller descriptor structure.
402  * Called by hardware driver to signal that the controller is down and
408 	printk(KERN_NOTICE "kcapi: controller [%03d] down.\n", ctr->cnr);  in capi_ctr_down()
410 	notify_push(CAPICTR_DOWN, ctr->cnr);  in capi_ctr_down()
415 /* ------------------------------------------------------------- */
418  * attach_capi_ctr() - register CAPI controller
419  * @ctr:	controller descriptor structure.
421  * Called by hardware driver to register a controller with the CAPI subsystem.
437 		printk(KERN_ERR "kcapi: out of controller slots\n");  in attach_capi_ctr()
438 		return -EBUSY;  in attach_capi_ctr()
442 	ctr->nrecvctlpkt = 0;  in attach_capi_ctr()
443 	ctr->nrecvdatapkt = 0;  in attach_capi_ctr()
444 	ctr->nsentctlpkt = 0;  in attach_capi_ctr()
445 	ctr->nsentdatapkt = 0;  in attach_capi_ctr()
446 	ctr->cnr = i + 1;  in attach_capi_ctr()
447 	ctr->state = CAPI_CTR_DETECTED;  in attach_capi_ctr()
448 	ctr->blocked = 0;  in attach_capi_ctr()
449 	ctr->traceflag = showcapimsgs;  in attach_capi_ctr()
451 	sprintf(ctr->procfn, "capi/controllers/%d", ctr->cnr);  in attach_capi_ctr()
452 	ctr->procent = proc_create_single_data(ctr->procfn, 0, NULL,  in attach_capi_ctr()
453 			ctr->proc_show, ctr);  in attach_capi_ctr()
459 	printk(KERN_NOTICE "kcapi: controller [%03d]: %s attached\n",  in attach_capi_ctr()
460 	       ctr->cnr, ctr->name);  in attach_capi_ctr()
467  * detach_capi_ctr() - unregister CAPI controller
468  * @ctr:	controller descriptor structure.
470  * Called by hardware driver to remove the registration of a controller
483 	if (ctr->cnr < 1 || ctr->cnr - 1 >= CAPI_MAXCONTR) {  in detach_capi_ctr()
484 		err = -EINVAL;  in detach_capi_ctr()
488 	if (capi_controller[ctr->cnr - 1] != ctr) {  in detach_capi_ctr()
489 		err = -EINVAL;  in detach_capi_ctr()
492 	capi_controller[ctr->cnr - 1] = NULL;  in detach_capi_ctr()
493 	ncontrollers--;  in detach_capi_ctr()
495 	if (ctr->procent)  in detach_capi_ctr()
496 		remove_proc_entry(ctr->procfn, NULL);  in detach_capi_ctr()
498 	printk(KERN_NOTICE "kcapi: controller [%03d]: %s unregistered\n",  in detach_capi_ctr()
499 	       ctr->cnr, ctr->name);  in detach_capi_ctr()
509 /* ------------------------------------------------------------- */
510 /* -------- CAPI2.0 Interface ---------------------------------- */
511 /* ------------------------------------------------------------- */
514  * capi20_isinstalled() - CAPI 2.0 operation CAPI_INSTALLED
516  * Return value: CAPI result code (CAPI_NOERROR if at least one ISDN controller
529 		    capi_controller[i]->state == CAPI_CTR_RUNNING) {  in capi20_isinstalled()
540  * capi20_register() - CAPI 2.0 operation CAPI_REGISTER
544  * A unique application ID is assigned and stored in @ap->applid.
546  * callback function @ap->recv_message() may be called at any time
558 	if (ap->rparam.datablklen < 128)  in capi20_register()
561 	ap->nrecvctlpkt = 0;  in capi20_register()
562 	ap->nrecvdatapkt = 0;  in capi20_register()
563 	ap->nsentctlpkt = 0;  in capi20_register()
564 	ap->nsentdatapkt = 0;  in capi20_register()
565 	mutex_init(&ap->recv_mtx);  in capi20_register()
566 	skb_queue_head_init(&ap->recv_queue);  in capi20_register()
567 	INIT_WORK(&ap->recv_work, recv_handler);  in capi20_register()
568 	ap->release_in_progress = 0;  in capi20_register()
573 		if (capi_applications[applid - 1] == NULL)  in capi20_register()
581 	ap->applid = applid;  in capi20_register()
582 	capi_applications[applid - 1] = ap;  in capi20_register()
586 		    capi_controller[i]->state != CAPI_CTR_RUNNING)  in capi20_register()
588 		register_appl(capi_controller[i], applid, &ap->rparam);  in capi20_register()
601  * capi20_release() - CAPI 2.0 operation CAPI_RELEASE
606  * callback function @ap->recv_message() will no longer be called.
614 	DBG("applid %#x", ap->applid);  in capi20_release()
618 	ap->release_in_progress = 1;  in capi20_release()
619 	capi_applications[ap->applid - 1] = NULL;  in capi20_release()
625 		    capi_controller[i]->state != CAPI_CTR_RUNNING)  in capi20_release()
627 		release_appl(capi_controller[i], ap->applid);  in capi20_release()
633 	skb_queue_purge(&ap->recv_queue);  in capi20_release()
636 		printk(KERN_DEBUG "kcapi: appl %d down\n", ap->applid);  in capi20_release()
643  * capi20_put_message() - CAPI 2.0 operation CAPI_PUT_MESSAGE
657 	DBG("applid %#x", ap->applid);  in capi20_put_message()
661 	if ((ap->applid == 0) || ap->release_in_progress)  in capi20_put_message()
663 	if (skb->len < 12  in capi20_put_message()
664 	    || !capi_cmd_valid(CAPIMSG_COMMAND(skb->data))  in capi20_put_message()
665 	    || !capi_subcmd_valid(CAPIMSG_SUBCOMMAND(skb->data)))  in capi20_put_message()
669 	 * The controller reference is protected by the existence of the  in capi20_put_message()
673 	ctr = get_capi_ctr_by_nr(CAPIMSG_CONTROLLER(skb->data));  in capi20_put_message()
674 	if (!ctr || ctr->state != CAPI_CTR_RUNNING)  in capi20_put_message()
676 	if (ctr->blocked)  in capi20_put_message()
679 	cmd = CAPIMSG_COMMAND(skb->data);  in capi20_put_message()
680 	subcmd = CAPIMSG_SUBCOMMAND(skb->data);  in capi20_put_message()
683 		ctr->nsentdatapkt++;  in capi20_put_message()
684 		ap->nsentdatapkt++;  in capi20_put_message()
685 		if (ctr->traceflag > 2)  in capi20_put_message()
688 		ctr->nsentctlpkt++;  in capi20_put_message()
689 		ap->nsentctlpkt++;  in capi20_put_message()
690 		if (ctr->traceflag)  in capi20_put_message()
693 	showctl |= (ctr->traceflag & 1);  in capi20_put_message()
697 			       CAPIMSG_CONTROLLER(skb->data),  in capi20_put_message()
698 			       CAPIMSG_APPID(skb->data),  in capi20_put_message()
700 			       CAPIMSG_LEN(skb->data));  in capi20_put_message()
702 			_cdebbuf *cdb = capi_message2str(skb->data);  in capi20_put_message()
705 				       CAPIMSG_CONTROLLER(skb->data),  in capi20_put_message()
706 				       cdb->buf);  in capi20_put_message()
710 				       CAPIMSG_CONTROLLER(skb->data),  in capi20_put_message()
711 				       CAPIMSG_APPID(skb->data),  in capi20_put_message()
713 				       CAPIMSG_LEN(skb->data));  in capi20_put_message()
716 	return ctr->send_message(ctr, skb);  in capi20_put_message()
720  * capi20_get_manufacturer() - CAPI 2.0 operation CAPI_GET_MANUFACTURER
721  * @contr:	controller number.
724  * Retrieve information about the manufacturer of the specified ISDN controller
742 	if (ctr && ctr->state == CAPI_CTR_RUNNING) {  in capi20_get_manufacturer()
743 		strscpy_pad(buf, ctr->manu, CAPI_MANUFACTURER_LEN);  in capi20_get_manufacturer()
753  * capi20_get_version() - CAPI 2.0 operation CAPI_GET_VERSION
754  * @contr:	controller number.
757  * Retrieve version information for the specified ISDN controller
775 	if (ctr && ctr->state == CAPI_CTR_RUNNING) {  in capi20_get_version()
776 		memcpy(verp, &ctr->version, sizeof(capi_version));  in capi20_get_version()
786  * capi20_get_serial() - CAPI 2.0 operation CAPI_GET_SERIAL_NUMBER
787  * @contr:	controller number.
790  * Retrieve the serial number of the specified ISDN controller
808 	if (ctr && ctr->state == CAPI_CTR_RUNNING) {  in capi20_get_serial()
809 		strscpy(serial, ctr->serial, CAPI_SERIAL_LEN);  in capi20_get_serial()
819  * capi20_get_profile() - CAPI 2.0 operation CAPI_GET_PROFILE
820  * @contr:	controller number.
823  * Retrieve capability information for the specified ISDN controller
834 		profp->ncontroller = ncontrollers;  in capi20_get_profile()
841 	if (ctr && ctr->state == CAPI_CTR_RUNNING) {  in capi20_get_profile()
842 		memcpy(profp, &ctr->profile, sizeof(struct capi_profile));  in capi20_get_profile()
852  * capi20_manufacturer() - CAPI 2.0 operation CAPI_MANUFACTURER
854  * @data:	parameter.
860 int capi20_manufacturer(unsigned long cmd, void __user *data)  in capi20_manufacturer()  argument
870 		if (copy_from_user(&fdef, data, sizeof(kcapi_flagdef)))  in capi20_manufacturer()
871 			return -EFAULT;  in capi20_manufacturer()
877 			ctr->traceflag = fdef.flag;  in capi20_manufacturer()
879 			       ctr->cnr, ctr->traceflag);  in capi20_manufacturer()
882 			retval = -ESRCH;  in capi20_manufacturer()
895 	return -EINVAL;  in capi20_manufacturer()
898 /* ------------------------------------------------------------- */
899 /* -------- Init & Cleanup ------------------------------------- */
900 /* ------------------------------------------------------------- */
912 		return -ENOMEM;  in kcapi_init()