[deliverable/linux.git] / drivers / staging / mei / wd.c

/*
 *
 * Intel Management Engine Interface (Intel MEI) Linux driver
 * Copyright (c) 2003-2011, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/watchdog.h>

#include "mei_dev.h"
#include "hw.h"
#include "interface.h"
#include "mei.h"

static const u8 mei_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 };
static const u8 mei_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 };

const u8 mei_wd_state_independence_msg[3][4] = {
	{0x05, 0x02, 0x51, 0x10},
	{0x05, 0x02, 0x52, 0x10},
	{0x07, 0x02, 0x01, 0x10}
};

/* UUIDs for AMT F/W clients */
const uuid_le mei_wd_guid = UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, 0x89,
						0x9D, 0xA9, 0x15, 0x14, 0xCB,
						0x32, 0xAB);


void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)
{
	dev_dbg(&dev->pdev->dev, "timeout=%d.\n", timeout);
	memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE);
	memcpy(dev->wd_data + MEI_WD_PARAMS_SIZE,
			&timeout, sizeof(u16));
}

/**
 * host_init_wd - mei initialization wd.
 *
 * @dev: the device structure
 */
bool mei_wd_host_init(struct mei_device *dev)
{
	bool ret = false;

	mei_cl_init(&dev->wd_cl, dev);

	/* look for WD client and connect to it */
	dev->wd_cl.state = MEI_FILE_DISCONNECTED;
	dev->wd_timeout = AMT_WD_DEFAULT_TIMEOUT;

	/* find ME WD client */
	mei_find_me_client_update_filext(dev, &dev->wd_cl,
				&mei_wd_guid, MEI_WD_HOST_CLIENT_ID);

	dev_dbg(&dev->pdev->dev, "check wd_cl\n");
	if (MEI_FILE_CONNECTING == dev->wd_cl.state) {
		if (!mei_connect(dev, &dev->wd_cl)) {
			dev_dbg(&dev->pdev->dev, "Failed to connect to WD client\n");
			dev->wd_cl.state = MEI_FILE_DISCONNECTED;
			dev->wd_cl.host_client_id = 0;
			ret = false;
			goto end;
		} else {
			dev->wd_cl.timer_count = CONNECT_TIMEOUT;
		}
	} else {
		dev_dbg(&dev->pdev->dev, "Failed to find WD client\n");
		ret = false;
		goto end;
	}

end:
	return ret;
}

/**
 * mei_wd_send - sends watch dog message to fw.
 *
 * @dev: the device structure
 *
 * returns 0 if success,
 *	-EIO when message send fails
 *	-EINVAL when invalid message is to be sent
 */
int mei_wd_send(struct mei_device *dev)
{
	struct mei_msg_hdr *mei_hdr;

	mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
	mei_hdr->host_addr = dev->wd_cl.host_client_id;
	mei_hdr->me_addr = dev->wd_cl.me_client_id;
	mei_hdr->msg_complete = 1;
	mei_hdr->reserved = 0;

	if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE))
		mei_hdr->length = MEI_START_WD_DATA_SIZE;
	else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE))
		mei_hdr->length = MEI_WD_PARAMS_SIZE;
	else
		return -EINVAL;

	if (mei_write_message(dev, mei_hdr, dev->wd_data, mei_hdr->length))
		return 0;
	return -EIO;
}

int mei_wd_stop(struct mei_device *dev, bool preserve)
{
	int ret;
	u16 wd_timeout = dev->wd_timeout;

	cancel_delayed_work(&dev->timer_work);
	if (dev->wd_cl.state != MEI_FILE_CONNECTED || !dev->wd_timeout)
		return 0;

	dev->wd_timeout = 0;
	dev->wd_due_counter = 0;
	memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE);
	dev->stop = true;

	ret = mei_flow_ctrl_creds(dev, &dev->wd_cl);
	if (ret < 0)
		goto out;

	if (ret && dev->mei_host_buffer_is_empty) {
		ret = 0;
		dev->mei_host_buffer_is_empty = false;

		if (!mei_wd_send(dev)) {
			ret = mei_flow_ctrl_reduce(dev, &dev->wd_cl);
			if (ret)
				goto out;
		} else {
			dev_dbg(&dev->pdev->dev, "send stop WD failed\n");
		}

		dev->wd_pending = false;
	} else {
		dev->wd_pending = true;
	}
	dev->wd_stopped = false;
	mutex_unlock(&dev->device_lock);

	ret = wait_event_interruptible_timeout(dev->wait_stop_wd,
					dev->wd_stopped, 10 * HZ);
	mutex_lock(&dev->device_lock);
	if (dev->wd_stopped) {
		dev_dbg(&dev->pdev->dev, "stop wd complete ret=%d.\n", ret);
		ret = 0;
	} else {
		if (!ret)
			ret = -ETIMEDOUT;
		dev_warn(&dev->pdev->dev,
			"stop wd failed to complete ret=%d.\n", ret);
	}

	if (preserve)
		dev->wd_timeout = wd_timeout;

out:
	return ret;
}

/*
 * mei_wd_ops_start - wd start command from the watchdog core.
 *
 * @wd_dev - watchdog device struct
 *
 * returns 0 if success, negative errno code for failure
 */
static int mei_wd_ops_start(struct watchdog_device *wd_dev)
{
	int err = -ENODEV;
	struct mei_device *dev;

	dev = pci_get_drvdata(mei_device);
	if (!dev)
		return -ENODEV;

	mutex_lock(&dev->device_lock);

	if (dev->mei_state != MEI_ENABLED) {
		dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED  mei_state= %d\n",
		    dev->mei_state);
		goto end_unlock;
	}

	if (dev->wd_cl.state != MEI_FILE_CONNECTED)	{
		dev_dbg(&dev->pdev->dev, "MEI Driver is not connected to Watchdog Client\n");
		goto end_unlock;
	}

	mei_wd_set_start_timeout(dev, dev->wd_timeout);

	err = 0;
end_unlock:
	mutex_unlock(&dev->device_lock);
	return err;
}

/*
 * mei_wd_ops_stop -  wd stop command from the watchdog core.
 *
 * @wd_dev - watchdog device struct
 *
 * returns 0 if success, negative errno code for failure
 */
static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
{
	struct mei_device *dev;
	dev = pci_get_drvdata(mei_device);

	if (!dev)
		return -ENODEV;

	mutex_lock(&dev->device_lock);
	mei_wd_stop(dev, false);
	mutex_unlock(&dev->device_lock);

	return 0;
}

/*
 * mei_wd_ops_ping - wd ping command from the watchdog core.
 *
 * @wd_dev - watchdog device struct
 *
 * returns 0 if success, negative errno code for failure
 */
static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
{
	int ret = 0;
	struct mei_device *dev;
	dev = pci_get_drvdata(mei_device);

	if (!dev)
		return -ENODEV;

	mutex_lock(&dev->device_lock);

	if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
		dev_dbg(&dev->pdev->dev, "wd is not connected.\n");
		ret = -ENODEV;
		goto end;
	}

	/* Check if we can send the ping to HW*/
	if (dev->mei_host_buffer_is_empty &&
		mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {

		dev->mei_host_buffer_is_empty = false;
		dev_dbg(&dev->pdev->dev, "sending watchdog ping\n");

		if (mei_wd_send(dev)) {
			dev_dbg(&dev->pdev->dev, "wd send failed.\n");
			ret = -EIO;
			goto end;
		}

		if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) {
			dev_dbg(&dev->pdev->dev, "mei_flow_ctrl_reduce() failed.\n");
			ret = -EIO;
			goto end;
		}

	} else {
		dev->wd_pending = true;
	}

end:
	mutex_unlock(&dev->device_lock);
	return ret;
}

/*
 * mei_wd_ops_set_timeout - wd set timeout command from the watchdog core.
 *
 * @wd_dev - watchdog device struct
 * @timeout - timeout value to set
 *
 * returns 0 if success, negative errno code for failure
 */
static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout)
{
	struct mei_device *dev;
	dev = pci_get_drvdata(mei_device);

	if (!dev)
		return -ENODEV;

	/* Check Timeout value */
	if (timeout < AMT_WD_MIN_TIMEOUT || timeout > AMT_WD_MAX_TIMEOUT)
		return -EINVAL;

	mutex_lock(&dev->device_lock);

	dev->wd_timeout = timeout;
	mei_wd_set_start_timeout(dev, dev->wd_timeout);

	mutex_unlock(&dev->device_lock);

	return 0;
}

/*
 * Watchdog Device structs
 */
const struct watchdog_ops wd_ops = {
		.owner = THIS_MODULE,
		.start = mei_wd_ops_start,
		.stop = mei_wd_ops_stop,
		.ping = mei_wd_ops_ping,
		.set_timeout = mei_wd_ops_set_timeout,
};
const struct watchdog_info wd_info = {
		.identity = INTEL_AMT_WATCHDOG_ID,
		.options = WDIOF_KEEPALIVEPING,
};

struct watchdog_device amt_wd_dev = {
		.info = &wd_info,
		.ops = &wd_ops,
		.timeout = AMT_WD_DEFAULT_TIMEOUT,
		.min_timeout = AMT_WD_MIN_TIMEOUT,
		.max_timeout = AMT_WD_MAX_TIMEOUT,
};
Commit	Line	Data
3ceb3e66 OW	1	/*
	2	*
	3	* Intel Management Engine Interface (Intel MEI) Linux driver
	4	* Copyright (c) 2003-2011, Intel Corporation.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	*/
	16	#include <linux/kernel.h>
	17	#include <linux/module.h>
	18	#include <linux/moduleparam.h>
	19	#include <linux/device.h>
	20	#include <linux/pci.h>
	21	#include <linux/sched.h>
9ce178e5	22	#include <linux/watchdog.h>
3ceb3e66 OW	23
	24	#include "mei_dev.h"
	25	#include "hw.h"
	26	#include "interface.h"
	27	#include "mei.h"
	28
3ceb3e66 OW	29	static const u8 mei_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 };
	30	static const u8 mei_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 };
	31
	32	const u8 mei_wd_state_independence_msg[3][4] = {
	33	{0x05, 0x02, 0x51, 0x10},
	34	{0x05, 0x02, 0x52, 0x10},
	35	{0x07, 0x02, 0x01, 0x10}
	36	};
	37
	38	/* UUIDs for AMT F/W clients */
	39	const uuid_le mei_wd_guid = UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, 0x89,
	40	0x9D, 0xA9, 0x15, 0x14, 0xCB,
	41	0x32, 0xAB);
	42
	43
55d33856	44	void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)
3ceb3e66	45	{
55d33856	46	dev_dbg(&dev->pdev->dev, "timeout=%d.\n", timeout);
3ceb3e66 OW	47	memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE);
3ceb3e66 OW	48	memcpy(dev->wd_data + MEI_WD_PARAMS_SIZE,
55d33856	49	&timeout, sizeof(u16));
3ceb3e66 OW	50	}
	51
	52	/**
	53	* host_init_wd - mei initialization wd.
	54	*
	55	* @dev: the device structure
	56	*/
617aa396	57	bool mei_wd_host_init(struct mei_device *dev)
3ceb3e66	58	{
617aa396 OW	59	bool ret = false;
617aa396 OW	60
c95efb74	61	mei_cl_init(&dev->wd_cl, dev);
3ceb3e66 OW	62
	63	/* look for WD client and connect to it */
	64	dev->wd_cl.state = MEI_FILE_DISCONNECTED;
2ad64ba8	65	dev->wd_timeout = AMT_WD_DEFAULT_TIMEOUT;
3ceb3e66	66
2ad64ba8 OW	67	/* find ME WD client */
	68	mei_find_me_client_update_filext(dev, &dev->wd_cl,
	69	&mei_wd_guid, MEI_WD_HOST_CLIENT_ID);
3ceb3e66	70
2ad64ba8 OW	71	dev_dbg(&dev->pdev->dev, "check wd_cl\n");
	72	if (MEI_FILE_CONNECTING == dev->wd_cl.state) {
	73	if (!mei_connect(dev, &dev->wd_cl)) {
	74	dev_dbg(&dev->pdev->dev, "Failed to connect to WD client\n");
	75	dev->wd_cl.state = MEI_FILE_DISCONNECTED;
	76	dev->wd_cl.host_client_id = 0;
617aa396 OW	77	ret = false;
617aa396 OW	78	goto end;
2ad64ba8 OW	79	} else {
2ad64ba8 OW	80	dev->wd_cl.timer_count = CONNECT_TIMEOUT;
3ceb3e66 OW	81	}
3ceb3e66 OW	82	} else {
2ad64ba8	83	dev_dbg(&dev->pdev->dev, "Failed to find WD client\n");
617aa396 OW	84	ret = false;
617aa396 OW	85	goto end;
3ceb3e66	86	}
617aa396 OW	87
	88	end:
	89	return ret;
3ceb3e66 OW	90	}
	91
	92	/**
	93	* mei_wd_send - sends watch dog message to fw.
	94	*
	95	* @dev: the device structure
	96	*
	97	* returns 0 if success,
	98	* -EIO when message send fails
	99	* -EINVAL when invalid message is to be sent
	100	*/
	101	int mei_wd_send(struct mei_device *dev)
	102	{
	103	struct mei_msg_hdr *mei_hdr;
	104
	105	mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
	106	mei_hdr->host_addr = dev->wd_cl.host_client_id;
	107	mei_hdr->me_addr = dev->wd_cl.me_client_id;
	108	mei_hdr->msg_complete = 1;
	109	mei_hdr->reserved = 0;
	110
	111	if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE))
	112	mei_hdr->length = MEI_START_WD_DATA_SIZE;
	113	else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE))
	114	mei_hdr->length = MEI_WD_PARAMS_SIZE;
	115	else
	116	return -EINVAL;
	117
	118	if (mei_write_message(dev, mei_hdr, dev->wd_data, mei_hdr->length))
	119	return 0;
	120	return -EIO;
	121	}
	122
	123	int mei_wd_stop(struct mei_device *dev, bool preserve)
	124	{
	125	int ret;
	126	u16 wd_timeout = dev->wd_timeout;
	127
a61c6530	128	cancel_delayed_work(&dev->timer_work);
3ceb3e66 OW	129	if (dev->wd_cl.state != MEI_FILE_CONNECTED \|\| !dev->wd_timeout)
	130	return 0;
	131
	132	dev->wd_timeout = 0;
	133	dev->wd_due_counter = 0;
	134	memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE);
eb9af0ac	135	dev->stop = true;
3ceb3e66 OW	136
	137	ret = mei_flow_ctrl_creds(dev, &dev->wd_cl);
	138	if (ret < 0)
	139	goto out;
	140
	141	if (ret && dev->mei_host_buffer_is_empty) {
	142	ret = 0;
eb9af0ac	143	dev->mei_host_buffer_is_empty = false;
3ceb3e66 OW	144
	145	if (!mei_wd_send(dev)) {
	146	ret = mei_flow_ctrl_reduce(dev, &dev->wd_cl);
	147	if (ret)
	148	goto out;
	149	} else {
	150	dev_dbg(&dev->pdev->dev, "send stop WD failed\n");
	151	}
	152
eb9af0ac	153	dev->wd_pending = false;
3ceb3e66	154	} else {
eb9af0ac	155	dev->wd_pending = true;
3ceb3e66	156	}
eb9af0ac	157	dev->wd_stopped = false;
3ceb3e66 OW	158	mutex_unlock(&dev->device_lock);
	159
	160	ret = wait_event_interruptible_timeout(dev->wait_stop_wd,
	161	dev->wd_stopped, 10 * HZ);
	162	mutex_lock(&dev->device_lock);
a534bb6e TW	163	if (dev->wd_stopped) {
	164	dev_dbg(&dev->pdev->dev, "stop wd complete ret=%d.\n", ret);
	165	ret = 0;
	166	} else {
	167	if (!ret)
	168	ret = -ETIMEDOUT;
	169	dev_warn(&dev->pdev->dev,
	170	"stop wd failed to complete ret=%d.\n", ret);
	171	}
3ceb3e66 OW	172
	173	if (preserve)
	174	dev->wd_timeout = wd_timeout;
	175
	176	out:
	177	return ret;
	178	}
	179
4a3cafd5 OW	180	/*
	181	* mei_wd_ops_start - wd start command from the watchdog core.
	182	*
	183	* @wd_dev - watchdog device struct
	184	*
	185	* returns 0 if success, negative errno code for failure
	186	*/
	187	static int mei_wd_ops_start(struct watchdog_device *wd_dev)
	188	{
	189	int err = -ENODEV;
	190	struct mei_device *dev;
	191
	192	dev = pci_get_drvdata(mei_device);
	193	if (!dev)
	194	return -ENODEV;
	195
	196	mutex_lock(&dev->device_lock);
	197
	198	if (dev->mei_state != MEI_ENABLED) {
	199	dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n",
	200	dev->mei_state);
	201	goto end_unlock;
	202	}
	203
	204	if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
	205	dev_dbg(&dev->pdev->dev, "MEI Driver is not connected to Watchdog Client\n");
	206	goto end_unlock;
	207	}
	208
55d33856	209	mei_wd_set_start_timeout(dev, dev->wd_timeout);
4a3cafd5 OW	210
	211	err = 0;
	212	end_unlock:
	213	mutex_unlock(&dev->device_lock);
	214	return err;
	215	}
	216
	217	/*
	218	* mei_wd_ops_stop - wd stop command from the watchdog core.
	219	*
	220	* @wd_dev - watchdog device struct
	221	*
	222	* returns 0 if success, negative errno code for failure
	223	*/
	224	static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
	225	{
	226	struct mei_device *dev;
	227	dev = pci_get_drvdata(mei_device);
	228
	229	if (!dev)
	230	return -ENODEV;
	231
	232	mutex_lock(&dev->device_lock);
	233	mei_wd_stop(dev, false);
	234	mutex_unlock(&dev->device_lock);
	235
	236	return 0;
	237	}
	238
8c4a59a7 OW	239	/*
	240	* mei_wd_ops_ping - wd ping command from the watchdog core.
	241	*
	242	* @wd_dev - watchdog device struct
	243	*
	244	* returns 0 if success, negative errno code for failure
	245	*/
	246	static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
	247	{
	248	int ret = 0;
	249	struct mei_device *dev;
	250	dev = pci_get_drvdata(mei_device);
	251
	252	if (!dev)
	253	return -ENODEV;
	254
	255	mutex_lock(&dev->device_lock);
	256
	257	if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
	258	dev_dbg(&dev->pdev->dev, "wd is not connected.\n");
	259	ret = -ENODEV;
	260	goto end;
	261	}
	262
	263	/* Check if we can send the ping to HW*/
	264	if (dev->mei_host_buffer_is_empty &&
	265	mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
	266
	267	dev->mei_host_buffer_is_empty = false;
	268	dev_dbg(&dev->pdev->dev, "sending watchdog ping\n");
	269
	270	if (mei_wd_send(dev)) {
	271	dev_dbg(&dev->pdev->dev, "wd send failed.\n");
	272	ret = -EIO;
	273	goto end;
	274	}
	275
	276	if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) {
	277	dev_dbg(&dev->pdev->dev, "mei_flow_ctrl_reduce() failed.\n");
	278	ret = -EIO;
	279	goto end;
	280	}
	281
	282	} else {
	283	dev->wd_pending = true;
	284	}
	285
	286	end:
	287	mutex_unlock(&dev->device_lock);
	288	return ret;
	289	}
	290
55d33856 OW	291	/*
	292	* mei_wd_ops_set_timeout - wd set timeout command from the watchdog core.
	293	*
	294	* @wd_dev - watchdog device struct
	295	* @timeout - timeout value to set
	296	*
	297	* returns 0 if success, negative errno code for failure
	298	*/
	299	static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout)
	300	{
	301	struct mei_device *dev;
	302	dev = pci_get_drvdata(mei_device);
	303
	304	if (!dev)
	305	return -ENODEV;
	306
	307	/* Check Timeout value */
	308	if (timeout < AMT_WD_MIN_TIMEOUT \|\| timeout > AMT_WD_MAX_TIMEOUT)
	309	return -EINVAL;
	310
	311	mutex_lock(&dev->device_lock);
	312
	313	dev->wd_timeout = timeout;
	314	mei_wd_set_start_timeout(dev, dev->wd_timeout);
	315
	316	mutex_unlock(&dev->device_lock);
	317
	318	return 0;
	319	}
	320
4a3cafd5 OW	321	/*
	322	* Watchdog Device structs
	323	*/
	324	const struct watchdog_ops wd_ops = {
	325	.owner = THIS_MODULE,
	326	.start = mei_wd_ops_start,
	327	.stop = mei_wd_ops_stop,
8c4a59a7	328	.ping = mei_wd_ops_ping,
55d33856	329	.set_timeout = mei_wd_ops_set_timeout,
4a3cafd5 OW	330	};
	331	const struct watchdog_info wd_info = {
	332	.identity = INTEL_AMT_WATCHDOG_ID,
8c4a59a7	333	.options = WDIOF_KEEPALIVEPING,
4a3cafd5 OW	334	};
	335
	336	struct watchdog_device amt_wd_dev = {
	337	.info = &wd_info,
	338	.ops = &wd_ops,
	339	.timeout = AMT_WD_DEFAULT_TIMEOUT,
	340	.min_timeout = AMT_WD_MIN_TIMEOUT,
	341	.max_timeout = AMT_WD_MAX_TIMEOUT,
	342	};
	343
	344