42 static void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)  in mei_wd_set_start_timeout()  argument
44 	dev_dbg(dev->dev, "wd: set timeout=%d.\n", timeout);  in mei_wd_set_start_timeout()
45 	memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE);  in mei_wd_set_start_timeout()
46 	memcpy(dev->wd_data + MEI_WD_HDR_SIZE, &timeout, sizeof(u16));  in mei_wd_set_start_timeout()
58 int mei_wd_host_init(struct mei_device *dev)  in mei_wd_host_init()  argument
60 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_host_init()
64 	mei_cl_init(cl, dev);  in mei_wd_host_init()
66 	dev->wd_timeout = MEI_WD_DEFAULT_TIMEOUT;  in mei_wd_host_init()
67 	dev->wd_state = MEI_WD_IDLE;  in mei_wd_host_init()
71 	me_cl = mei_me_cl_by_uuid(dev, &mei_wd_guid);  in mei_wd_host_init()
73 		dev_info(dev->dev, "wd: failed to find the client\n");  in mei_wd_host_init()
84 		dev_info(dev->dev, "wd: failed link client\n");  in mei_wd_host_init()
91 		dev_err(dev->dev, "wd: failed to connect = %d\n", ret);  in mei_wd_host_init()
96 	ret = mei_watchdog_register(dev);  in mei_wd_host_init()
114 int mei_wd_send(struct mei_device *dev)  in mei_wd_send()  argument
116 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_send()
126 	if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE))  in mei_wd_send()
128 	else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE))  in mei_wd_send()
131 		dev_err(dev->dev, "wd: invalid message is to be sent, aborting\n");  in mei_wd_send()
135 	ret = mei_write_message(dev, &hdr, dev->wd_data);  in mei_wd_send()
137 		dev_err(dev->dev, "wd: write message failed\n");  in mei_wd_send()
143 		dev_err(dev->dev, "wd: flow_ctrl_reduce failed.\n");  in mei_wd_send()
161 int mei_wd_stop(struct mei_device *dev)  in mei_wd_stop()  argument
163 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_stop()
167 	    dev->wd_state != MEI_WD_RUNNING)  in mei_wd_stop()
170 	memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_STOP_MSG_SIZE);  in mei_wd_stop()
172 	dev->wd_state = MEI_WD_STOPPING;  in mei_wd_stop()
178 	if (ret && mei_hbuf_acquire(dev)) {  in mei_wd_stop()
179 		ret = mei_wd_send(dev);  in mei_wd_stop()
182 		dev->wd_pending = false;  in mei_wd_stop()
184 		dev->wd_pending = true;  in mei_wd_stop()
187 	mutex_unlock(&dev->device_lock);  in mei_wd_stop()
189 	ret = wait_event_timeout(dev->wait_stop_wd,  in mei_wd_stop()
190 				dev->wd_state == MEI_WD_IDLE,  in mei_wd_stop()
192 	mutex_lock(&dev->device_lock);  in mei_wd_stop()
193 	if (dev->wd_state != MEI_WD_IDLE) {  in mei_wd_stop()
196 		dev_warn(dev->dev, "wd: stop failed to complete ret=%d\n", ret);  in mei_wd_stop()
199 	dev_dbg(dev->dev, "wd: stop completed after %u msec\n",  in mei_wd_stop()
215 	struct mei_device *dev;  in mei_wd_ops_start()  local
219 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_start()
220 	if (!dev)  in mei_wd_ops_start()
223 	cl = &dev->wd_cl;  in mei_wd_ops_start()
225 	mutex_lock(&dev->device_lock);  in mei_wd_ops_start()
227 	if (dev->dev_state != MEI_DEV_ENABLED) {  in mei_wd_ops_start()
228 		dev_dbg(dev->dev, "wd: dev_state != MEI_DEV_ENABLED  dev_state = %s\n",  in mei_wd_ops_start()
229 			mei_dev_state_str(dev->dev_state));  in mei_wd_ops_start()
234 		cl_dbg(dev, cl, "MEI Driver is not connected to Watchdog Client\n");  in mei_wd_ops_start()
238 	mei_wd_set_start_timeout(dev, dev->wd_timeout);  in mei_wd_ops_start()
242 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_start()
255 	struct mei_device *dev;  in mei_wd_ops_stop()  local
257 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_stop()
258 	if (!dev)  in mei_wd_ops_stop()
261 	mutex_lock(&dev->device_lock);  in mei_wd_ops_stop()
262 	mei_wd_stop(dev);  in mei_wd_ops_stop()
263 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_stop()
277 	struct mei_device *dev;  in mei_wd_ops_ping()  local
281 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_ping()
282 	if (!dev)  in mei_wd_ops_ping()
285 	cl = &dev->wd_cl;  in mei_wd_ops_ping()
287 	mutex_lock(&dev->device_lock);  in mei_wd_ops_ping()
290 		cl_err(dev, cl, "wd: not connected.\n");  in mei_wd_ops_ping()
295 	dev->wd_state = MEI_WD_RUNNING;  in mei_wd_ops_ping()
302 	if (ret && mei_hbuf_acquire(dev)) {  in mei_wd_ops_ping()
303 		dev_dbg(dev->dev, "wd: sending ping\n");  in mei_wd_ops_ping()
305 		ret = mei_wd_send(dev);  in mei_wd_ops_ping()
308 		dev->wd_pending = false;  in mei_wd_ops_ping()
310 		dev->wd_pending = true;  in mei_wd_ops_ping()
314 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_ping()
329 	struct mei_device *dev;  in mei_wd_ops_set_timeout()  local
331 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_set_timeout()
332 	if (!dev)  in mei_wd_ops_set_timeout()
339 	mutex_lock(&dev->device_lock);  in mei_wd_ops_set_timeout()
341 	dev->wd_timeout = timeout;  in mei_wd_ops_set_timeout()
343 	mei_wd_set_start_timeout(dev, dev->wd_timeout);  in mei_wd_ops_set_timeout()
345 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_set_timeout()
376 int mei_watchdog_register(struct mei_device *dev)  in mei_watchdog_register()  argument
382 	mutex_unlock(&dev->device_lock);  in mei_watchdog_register()
384 	mutex_lock(&dev->device_lock);  in mei_watchdog_register()
386 		dev_err(dev->dev, "wd: unable to register watchdog device = %d.\n",  in mei_watchdog_register()
391 	dev_dbg(dev->dev, "wd: successfully register watchdog interface.\n");  in mei_watchdog_register()
392 	watchdog_set_drvdata(&amt_wd_dev, dev);  in mei_watchdog_register()
396 void mei_watchdog_unregister(struct mei_device *dev)  in mei_watchdog_unregister()  argument