1 // SPDX-License-Identifier: GPL-2.0
24 	if (id->match_flags & TBSVC_MATCH_PROTOCOL_KEY) {  in match_service_id()
25 		if (strcmp(id->protocol_key, svc->key))  in match_service_id()
29 	if (id->match_flags & TBSVC_MATCH_PROTOCOL_ID) {  in match_service_id()
30 		if (id->protocol_id != svc->prtcid)  in match_service_id()
34 	if (id->match_flags & TBSVC_MATCH_PROTOCOL_VERSION) {  in match_service_id()
35 		if (id->protocol_version != svc->prtcvers)  in match_service_id()
39 	if (id->match_flags & TBSVC_MATCH_PROTOCOL_VERSION) {  in match_service_id()
40 		if (id->protocol_revision != svc->prtcrevs)  in match_service_id()
59 	if (!driver->id_table)  in __tb_service_match()
62 	for (ids = driver->id_table; ids->match_flags != 0; ids++) {  in __tb_service_match()
81 	driver = container_of(dev->driver, struct tb_service_driver, driver);  in tb_service_probe()
82 	id = __tb_service_match(dev, &driver->driver);  in tb_service_probe()
84 	return driver->probe(svc, id);  in tb_service_probe()
92 	driver = container_of(dev->driver, struct tb_service_driver, driver);  in tb_service_remove()
93 	if (driver->remove)  in tb_service_remove()
94 		driver->remove(svc);  in tb_service_remove()
103 	if (!svc || !dev->driver)  in tb_service_shutdown()
106 	driver = container_of(dev->driver, struct tb_service_driver, driver);  in tb_service_shutdown()
107 	if (driver->shutdown)  in tb_service_shutdown()
108 		driver->shutdown(svc);  in tb_service_shutdown()
128 	uuids = kcalloc(tb->nboot_acl, sizeof(uuid_t), GFP_KERNEL);  in boot_acl_show()
130 		return -ENOMEM;  in boot_acl_show()
132 	pm_runtime_get_sync(&tb->dev);  in boot_acl_show()
134 	if (mutex_lock_interruptible(&tb->lock)) {  in boot_acl_show()
135 		ret = -ERESTARTSYS;  in boot_acl_show()
138 	ret = tb->cm_ops->get_boot_acl(tb, uuids, tb->nboot_acl);  in boot_acl_show()
140 		mutex_unlock(&tb->lock);  in boot_acl_show()
143 	mutex_unlock(&tb->lock);  in boot_acl_show()
145 	for (ret = 0, i = 0; i < tb->nboot_acl; i++) {  in boot_acl_show()
149 		ret += sysfs_emit_at(buf, ret, "%s", i < tb->nboot_acl - 1 ? "," : "\n");  in boot_acl_show()
153 	pm_runtime_mark_last_busy(&tb->dev);  in boot_acl_show()
154 	pm_runtime_put_autosuspend(&tb->dev);  in boot_acl_show()
170 	 * Make sure the value is not bigger than tb->nboot_acl * UUID  in boot_acl_store()
172 	 * string is tb->nboot_acl * ",".  in boot_acl_store()
174 	if (count > (UUID_STRING_LEN + 1) * tb->nboot_acl + 1)  in boot_acl_store()
175 		return -EINVAL;  in boot_acl_store()
176 	if (count < tb->nboot_acl - 1)  in boot_acl_store()
177 		return -EINVAL;  in boot_acl_store()
181 		return -ENOMEM;  in boot_acl_store()
183 	acl = kcalloc(tb->nboot_acl, sizeof(uuid_t), GFP_KERNEL);  in boot_acl_store()
185 		ret = -ENOMEM;  in boot_acl_store()
190 	while ((s = strsep(&uuid_str, ",")) != NULL && i < tb->nboot_acl) {  in boot_acl_store()
195 				ret = -EINVAL;  in boot_acl_store()
206 	if (s || i < tb->nboot_acl) {  in boot_acl_store()
207 		ret = -EINVAL;  in boot_acl_store()
211 	pm_runtime_get_sync(&tb->dev);  in boot_acl_store()
213 	if (mutex_lock_interruptible(&tb->lock)) {  in boot_acl_store()
214 		ret = -ERESTARTSYS;  in boot_acl_store()
217 	ret = tb->cm_ops->set_boot_acl(tb, acl, tb->nboot_acl);  in boot_acl_store()
220 		kobject_uevent(&tb->dev.kobj, KOBJ_CHANGE);  in boot_acl_store()
222 	mutex_unlock(&tb->lock);  in boot_acl_store()
225 	pm_runtime_mark_last_busy(&tb->dev);  in boot_acl_store()
226 	pm_runtime_put_autosuspend(&tb->dev);  in boot_acl_store()
244 	if (tb->security_level == TB_SECURITY_USER ||  in deauthorization_show()
245 	    tb->security_level == TB_SECURITY_SECURE)  in deauthorization_show()
246 		deauthorization = !!tb->cm_ops->disapprove_switch;  in deauthorization_show()
258 	return sysfs_emit(buf, "%d\n", tb->nhi->iommu_dma_protection);  in iommu_dma_protection_show()
268 	if (tb->security_level < ARRAY_SIZE(tb_security_names))  in security_show()
269 		name = tb_security_names[tb->security_level];  in security_show()
290 		if (tb->nboot_acl &&  in domain_attr_is_visible()
291 		    tb->cm_ops->get_boot_acl &&  in domain_attr_is_visible()
292 		    tb->cm_ops->set_boot_acl)  in domain_attr_is_visible()
293 			return attr->mode;  in domain_attr_is_visible()
297 	return attr->mode;  in domain_attr_is_visible()
322 	tb_ctl_free(tb->ctl);  in tb_domain_release()
323 	destroy_workqueue(tb->wq);  in tb_domain_release()
324 	ida_free(&tb_domain_ida, tb->index);  in tb_domain_release()
325 	mutex_destroy(&tb->lock);  in tb_domain_release()
339 	if (!tb->cm_ops->handle_event) {  in tb_domain_event_cb()
352 		tb->cm_ops->handle_event(tb, type, buf, size);  in tb_domain_event_cb()
359  * tb_domain_alloc() - Allocate a domain
361  * @timeout_msec: Control channel timeout for non-raw messages
369  * to the system.
379 	 * expects because bit-fields are being used.  in tb_domain_alloc()
389 	tb->nhi = nhi;  in tb_domain_alloc()
390 	mutex_init(&tb->lock);  in tb_domain_alloc()
392 	tb->index = ida_alloc(&tb_domain_ida, GFP_KERNEL);  in tb_domain_alloc()
393 	if (tb->index < 0)  in tb_domain_alloc()
396 	tb->wq = alloc_ordered_workqueue("thunderbolt%d", 0, tb->index);  in tb_domain_alloc()
397 	if (!tb->wq)  in tb_domain_alloc()
400 	tb->ctl = tb_ctl_alloc(nhi, tb->index, timeout_msec, tb_domain_event_cb, tb);  in tb_domain_alloc()
401 	if (!tb->ctl)  in tb_domain_alloc()
404 	tb->dev.parent = &nhi->pdev->dev;  in tb_domain_alloc()
405 	tb->dev.bus = &tb_bus_type;  in tb_domain_alloc()
406 	tb->dev.type = &tb_domain_type;  in tb_domain_alloc()
407 	tb->dev.groups = domain_attr_groups;  in tb_domain_alloc()
408 	dev_set_name(&tb->dev, "domain%d", tb->index);  in tb_domain_alloc()
409 	device_initialize(&tb->dev);  in tb_domain_alloc()
414 	destroy_workqueue(tb->wq);  in tb_domain_alloc()
416 	ida_free(&tb_domain_ida, tb->index);  in tb_domain_alloc()
424  * tb_domain_add() - Add domain to the system
428  * Starts the domain and adds it to the system. Hotplugging devices will
439 	if (WARN_ON(!tb->cm_ops))  in tb_domain_add()
440 		return -EINVAL;  in tb_domain_add()
442 	mutex_lock(&tb->lock);  in tb_domain_add()
447 	tb_ctl_start(tb->ctl);  in tb_domain_add()
449 	if (tb->cm_ops->driver_ready) {  in tb_domain_add()
450 		ret = tb->cm_ops->driver_ready(tb);  in tb_domain_add()
456 	       tb_security_names[tb->security_level]);  in tb_domain_add()
458 	ret = device_add(&tb->dev);  in tb_domain_add()
463 	if (tb->cm_ops->start) {  in tb_domain_add()
464 		ret = tb->cm_ops->start(tb, reset);  in tb_domain_add()
470 	mutex_unlock(&tb->lock);  in tb_domain_add()
472 	device_init_wakeup(&tb->dev, true);  in tb_domain_add()
474 	pm_runtime_no_callbacks(&tb->dev);  in tb_domain_add()
475 	pm_runtime_set_active(&tb->dev);  in tb_domain_add()
476 	pm_runtime_enable(&tb->dev);  in tb_domain_add()
477 	pm_runtime_set_autosuspend_delay(&tb->dev, TB_AUTOSUSPEND_DELAY);  in tb_domain_add()
478 	pm_runtime_mark_last_busy(&tb->dev);  in tb_domain_add()
479 	pm_runtime_use_autosuspend(&tb->dev);  in tb_domain_add()
484 	device_del(&tb->dev);  in tb_domain_add()
486 	tb_ctl_stop(tb->ctl);  in tb_domain_add()
487 	mutex_unlock(&tb->lock);  in tb_domain_add()
493  * tb_domain_remove() - Removes and releases a domain
496  * Stops the domain, removes it from the system and releases all
501 	mutex_lock(&tb->lock);  in tb_domain_remove()
502 	if (tb->cm_ops->stop)  in tb_domain_remove()
503 		tb->cm_ops->stop(tb);  in tb_domain_remove()
505 	tb_ctl_stop(tb->ctl);  in tb_domain_remove()
506 	mutex_unlock(&tb->lock);  in tb_domain_remove()
508 	flush_workqueue(tb->wq);  in tb_domain_remove()
510 	if (tb->cm_ops->deinit)  in tb_domain_remove()
511 		tb->cm_ops->deinit(tb);  in tb_domain_remove()
513 	device_unregister(&tb->dev);  in tb_domain_remove()
517  * tb_domain_suspend_noirq() - Suspend a domain
531 	mutex_lock(&tb->lock);  in tb_domain_suspend_noirq()
532 	if (tb->cm_ops->suspend_noirq)  in tb_domain_suspend_noirq()
533 		ret = tb->cm_ops->suspend_noirq(tb);  in tb_domain_suspend_noirq()
535 		tb_ctl_stop(tb->ctl);  in tb_domain_suspend_noirq()
536 	mutex_unlock(&tb->lock);  in tb_domain_suspend_noirq()
542  * tb_domain_resume_noirq() - Resume a domain
545  * Re-starts the control channel, and resumes all devices connected to
552 	mutex_lock(&tb->lock);  in tb_domain_resume_noirq()
553 	tb_ctl_start(tb->ctl);  in tb_domain_resume_noirq()
554 	if (tb->cm_ops->resume_noirq)  in tb_domain_resume_noirq()
555 		ret = tb->cm_ops->resume_noirq(tb);  in tb_domain_resume_noirq()
556 	mutex_unlock(&tb->lock);  in tb_domain_resume_noirq()
563 	return tb->cm_ops->suspend ? tb->cm_ops->suspend(tb) : 0;  in tb_domain_suspend()
570 	mutex_lock(&tb->lock);  in tb_domain_freeze_noirq()
571 	if (tb->cm_ops->freeze_noirq)  in tb_domain_freeze_noirq()
572 		ret = tb->cm_ops->freeze_noirq(tb);  in tb_domain_freeze_noirq()
574 		tb_ctl_stop(tb->ctl);  in tb_domain_freeze_noirq()
575 	mutex_unlock(&tb->lock);  in tb_domain_freeze_noirq()
584 	mutex_lock(&tb->lock);  in tb_domain_thaw_noirq()
585 	tb_ctl_start(tb->ctl);  in tb_domain_thaw_noirq()
586 	if (tb->cm_ops->thaw_noirq)  in tb_domain_thaw_noirq()
587 		ret = tb->cm_ops->thaw_noirq(tb);  in tb_domain_thaw_noirq()
588 	mutex_unlock(&tb->lock);  in tb_domain_thaw_noirq()
595 	if (tb->cm_ops->complete)  in tb_domain_complete()
596 		tb->cm_ops->complete(tb);  in tb_domain_complete()
601 	if (tb->cm_ops->runtime_suspend) {  in tb_domain_runtime_suspend()
602 		int ret = tb->cm_ops->runtime_suspend(tb);  in tb_domain_runtime_suspend()
606 	tb_ctl_stop(tb->ctl);  in tb_domain_runtime_suspend()
612 	tb_ctl_start(tb->ctl);  in tb_domain_runtime_resume()
613 	if (tb->cm_ops->runtime_resume) {  in tb_domain_runtime_resume()
614 		int ret = tb->cm_ops->runtime_resume(tb);  in tb_domain_runtime_resume()
622  * tb_domain_disapprove_switch() - Disapprove switch
632 	if (!tb->cm_ops->disapprove_switch)  in tb_domain_disapprove_switch()
633 		return -EPERM;  in tb_domain_disapprove_switch()
635 	return tb->cm_ops->disapprove_switch(tb, sw);  in tb_domain_disapprove_switch()
639  * tb_domain_approve_switch() - Approve switch
651 	if (!tb->cm_ops->approve_switch)  in tb_domain_approve_switch()
652 		return -EPERM;  in tb_domain_approve_switch()
655 	parent_sw = tb_to_switch(sw->dev.parent);  in tb_domain_approve_switch()
656 	if (!parent_sw || !parent_sw->authorized)  in tb_domain_approve_switch()
657 		return -EINVAL;  in tb_domain_approve_switch()
659 	return tb->cm_ops->approve_switch(tb, sw);  in tb_domain_approve_switch()
663  * tb_domain_approve_switch_key() - Approve switch and add key
678 	if (!tb->cm_ops->approve_switch || !tb->cm_ops->add_switch_key)  in tb_domain_approve_switch_key()
679 		return -EPERM;  in tb_domain_approve_switch_key()
682 	parent_sw = tb_to_switch(sw->dev.parent);  in tb_domain_approve_switch_key()
683 	if (!parent_sw || !parent_sw->authorized)  in tb_domain_approve_switch_key()
684 		return -EINVAL;  in tb_domain_approve_switch_key()
686 	ret = tb->cm_ops->add_switch_key(tb, sw);  in tb_domain_approve_switch_key()
690 	return tb->cm_ops->approve_switch(tb, sw);  in tb_domain_approve_switch_key()
694  * tb_domain_challenge_switch_key() - Challenge and approve switch
715 	if (!tb->cm_ops->approve_switch || !tb->cm_ops->challenge_switch_key)  in tb_domain_challenge_switch_key()
716 		return -EPERM;  in tb_domain_challenge_switch_key()
719 	parent_sw = tb_to_switch(sw->dev.parent);  in tb_domain_challenge_switch_key()
720 	if (!parent_sw || !parent_sw->authorized)  in tb_domain_challenge_switch_key()
721 		return -EINVAL;  in tb_domain_challenge_switch_key()
724 	ret = tb->cm_ops->challenge_switch_key(tb, sw, challenge, response);  in tb_domain_challenge_switch_key()
732 	ret = crypto_shash_setkey(tfm, sw->key, TB_SWITCH_KEY_SIZE);  in tb_domain_challenge_switch_key()
739 		ret = -ENOMEM;  in tb_domain_challenge_switch_key()
743 	shash->tfm = tfm;  in tb_domain_challenge_switch_key()
752 		ret = -EKEYREJECTED;  in tb_domain_challenge_switch_key()
759 	return tb->cm_ops->approve_switch(tb, sw);  in tb_domain_challenge_switch_key()
770  * tb_domain_disconnect_pcie_paths() - Disconnect all PCIe paths
780 	if (!tb->cm_ops->disconnect_pcie_paths)  in tb_domain_disconnect_pcie_paths()
781 		return -EPERM;  in tb_domain_disconnect_pcie_paths()
783 	return tb->cm_ops->disconnect_pcie_paths(tb);  in tb_domain_disconnect_pcie_paths()
787  * tb_domain_approve_xdomain_paths() - Enable DMA paths for XDomain
799  * particular returns %-ENOTSUPP if the connection manager
806 	if (!tb->cm_ops->approve_xdomain_paths)  in tb_domain_approve_xdomain_paths()
807 		return -ENOTSUPP;  in tb_domain_approve_xdomain_paths()
809 	return tb->cm_ops->approve_xdomain_paths(tb, xd, transmit_path,  in tb_domain_approve_xdomain_paths()
814  * tb_domain_disconnect_xdomain_paths() - Disable DMA paths for XDomain
826  * particular returns %-ENOTSUPP if the connection manager
833 	if (!tb->cm_ops->disconnect_xdomain_paths)  in tb_domain_disconnect_xdomain_paths()
834 		return -ENOTSUPP;  in tb_domain_disconnect_xdomain_paths()
836 	return tb->cm_ops->disconnect_xdomain_paths(tb, xd, transmit_path,  in tb_domain_disconnect_xdomain_paths()
847 	if (xd && xd->tb == tb)  in disconnect_xdomain()
854  * tb_domain_disconnect_all_paths() - Disconnect all paths for the domain