21  * @rt: Retimer device
29 int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf,  in tb_retimer_nvm_read()  argument
32 	return usb4_port_retimer_nvm_read(rt->port, rt->index, address, buf, size);  in tb_retimer_nvm_read()
38 	struct tb_retimer *rt = tb_to_retimer(nvm->dev);  in nvm_read()  local
41 	pm_runtime_get_sync(&rt->dev);  in nvm_read()
43 	if (!mutex_trylock(&rt->tb->lock)) {  in nvm_read()
48 	ret = tb_retimer_nvm_read(rt, offset, val, bytes);  in nvm_read()
49 	mutex_unlock(&rt->tb->lock);  in nvm_read()
52 	pm_runtime_mark_last_busy(&rt->dev);  in nvm_read()
53 	pm_runtime_put_autosuspend(&rt->dev);  in nvm_read()
61 	struct tb_retimer *rt = tb_to_retimer(nvm->dev);  in nvm_write()  local
64 	if (!mutex_trylock(&rt->tb->lock))  in nvm_write()
68 	mutex_unlock(&rt->tb->lock);  in nvm_write()
73 static int tb_retimer_nvm_add(struct tb_retimer *rt)  in tb_retimer_nvm_add()  argument
78 	nvm = tb_nvm_alloc(&rt->dev);  in tb_retimer_nvm_add()
96 	rt->nvm = nvm;  in tb_retimer_nvm_add()
100 	dev_dbg(&rt->dev, "NVM upgrade disabled\n");  in tb_retimer_nvm_add()
107 static int tb_retimer_nvm_validate_and_write(struct tb_retimer *rt)  in tb_retimer_nvm_validate_and_write()  argument
113 	ret = tb_nvm_validate(rt->nvm);  in tb_retimer_nvm_validate_and_write()
117 	buf = rt->nvm->buf_data_start;  in tb_retimer_nvm_validate_and_write()
118 	image_size = rt->nvm->buf_data_size;  in tb_retimer_nvm_validate_and_write()
120 	ret = usb4_port_retimer_nvm_write(rt->port, rt->index, 0, buf,  in tb_retimer_nvm_validate_and_write()
125 	rt->nvm->flushed = true;  in tb_retimer_nvm_validate_and_write()
129 static int tb_retimer_nvm_authenticate(struct tb_retimer *rt, bool auth_only)  in tb_retimer_nvm_authenticate()  argument
135 		ret = usb4_port_retimer_nvm_set_offset(rt->port, rt->index, 0);  in tb_retimer_nvm_authenticate()
140 	ret = usb4_port_retimer_nvm_authenticate(rt->port, rt->index);  in tb_retimer_nvm_authenticate()
150 	ret = usb4_port_retimer_nvm_authenticate_status(rt->port, rt->index,  in tb_retimer_nvm_authenticate()
153 		rt->auth_status = status;  in tb_retimer_nvm_authenticate()
163 	struct tb_retimer *rt = tb_to_retimer(dev);  in device_show()  local
165 	return sysfs_emit(buf, "%#x\n", rt->device);  in device_show()
172 	struct tb_retimer *rt = tb_to_retimer(dev);  in nvm_authenticate_show()  local
175 	if (!mutex_trylock(&rt->tb->lock))  in nvm_authenticate_show()
178 	if (!rt->nvm)  in nvm_authenticate_show()
180 	else if (rt->no_nvm_upgrade)  in nvm_authenticate_show()
183 		ret = sysfs_emit(buf, "%#x\n", rt->auth_status);  in nvm_authenticate_show()
185 	mutex_unlock(&rt->tb->lock);  in nvm_authenticate_show()
193 	struct tb_retimer *rt = tb_to_retimer(dev);  in nvm_authenticate_store()  local
196 	pm_runtime_get_sync(&rt->dev);  in nvm_authenticate_store()
198 	if (!mutex_trylock(&rt->tb->lock)) {  in nvm_authenticate_store()
203 	if (!rt->nvm) {  in nvm_authenticate_store()
213 	rt->auth_status = 0;  in nvm_authenticate_store()
217 			ret = tb_retimer_nvm_authenticate(rt, true);  in nvm_authenticate_store()
219 			if (!rt->nvm->flushed) {  in nvm_authenticate_store()
220 				if (!rt->nvm->buf) {  in nvm_authenticate_store()
225 				ret = tb_retimer_nvm_validate_and_write(rt);  in nvm_authenticate_store()
230 				ret = tb_retimer_nvm_authenticate(rt, false);  in nvm_authenticate_store()
235 	mutex_unlock(&rt->tb->lock);  in nvm_authenticate_store()
237 	pm_runtime_mark_last_busy(&rt->dev);  in nvm_authenticate_store()
238 	pm_runtime_put_autosuspend(&rt->dev);  in nvm_authenticate_store()
249 	struct tb_retimer *rt = tb_to_retimer(dev);  in nvm_version_show()  local
252 	if (!mutex_trylock(&rt->tb->lock))  in nvm_version_show()
255 	if (!rt->nvm)  in nvm_version_show()
258 		ret = sysfs_emit(buf, "%x.%x\n", rt->nvm->major, rt->nvm->minor);  in nvm_version_show()
260 	mutex_unlock(&rt->tb->lock);  in nvm_version_show()
268 	struct tb_retimer *rt = tb_to_retimer(dev);  in vendor_show()  local
270 	return sysfs_emit(buf, "%#x\n", rt->vendor);  in vendor_show()
293 	struct tb_retimer *rt = tb_to_retimer(dev);  in tb_retimer_release()  local
295 	kfree(rt);  in tb_retimer_release()
306 	struct tb_retimer *rt;  in tb_retimer_add()  local
340 	rt = kzalloc(sizeof(*rt), GFP_KERNEL);  in tb_retimer_add()
341 	if (!rt)  in tb_retimer_add()
344 	rt->index = index;  in tb_retimer_add()
345 	rt->vendor = vendor;  in tb_retimer_add()
346 	rt->device = device;  in tb_retimer_add()
347 	rt->auth_status = auth_status;  in tb_retimer_add()
348 	rt->port = port;  in tb_retimer_add()
349 	rt->tb = port->sw->tb;  in tb_retimer_add()
351 	rt->dev.parent = &port->usb4->dev;  in tb_retimer_add()
352 	rt->dev.bus = &tb_bus_type;  in tb_retimer_add()
353 	rt->dev.type = &tb_retimer_type;  in tb_retimer_add()
354 	dev_set_name(&rt->dev, "%s:%u.%u", dev_name(&port->sw->dev),  in tb_retimer_add()
357 	ret = device_register(&rt->dev);  in tb_retimer_add()
359 		dev_err(&rt->dev, "failed to register retimer: %d\n", ret);  in tb_retimer_add()
360 		put_device(&rt->dev);  in tb_retimer_add()
364 	ret = tb_retimer_nvm_add(rt);  in tb_retimer_add()
366 		dev_err(&rt->dev, "failed to add NVM devices: %d\n", ret);  in tb_retimer_add()
367 		device_unregister(&rt->dev);  in tb_retimer_add()
371 	dev_info(&rt->dev, "new retimer found, vendor=%#x device=%#x\n",  in tb_retimer_add()
372 		 rt->vendor, rt->device);  in tb_retimer_add()
374 	pm_runtime_no_callbacks(&rt->dev);  in tb_retimer_add()
375 	pm_runtime_set_active(&rt->dev);  in tb_retimer_add()
376 	pm_runtime_enable(&rt->dev);  in tb_retimer_add()
377 	pm_runtime_set_autosuspend_delay(&rt->dev, TB_AUTOSUSPEND_DELAY);  in tb_retimer_add()
378 	pm_runtime_mark_last_busy(&rt->dev);  in tb_retimer_add()
379 	pm_runtime_use_autosuspend(&rt->dev);  in tb_retimer_add()
384 static void tb_retimer_remove(struct tb_retimer *rt)  in tb_retimer_remove()  argument
386 	dev_info(&rt->dev, "retimer disconnected\n");  in tb_retimer_remove()
387 	tb_nvm_free(rt->nvm);  in tb_retimer_remove()
388 	device_unregister(&rt->dev);  in tb_retimer_remove()
399 	struct tb_retimer *rt = tb_to_retimer(dev);  in retimer_match()  local
401 	return rt && rt->port == lookup->port && rt->index == lookup->index;  in retimer_match()
439 	 * Send broadcast RT to make sure retimer indices facing this  in tb_retimer_scan()
481 		struct tb_retimer *rt;  in tb_retimer_scan()  local
483 		rt = tb_port_find_retimer(port, i);  in tb_retimer_scan()
484 		if (rt) {  in tb_retimer_scan()
485 			put_device(&rt->dev);  in tb_retimer_scan()
502 	struct tb_retimer *rt = tb_to_retimer(dev);  in remove_retimer()  local
505 	if (rt && rt->port == port)  in remove_retimer()
506 		tb_retimer_remove(rt);  in remove_retimer()