/**
* host_init_wd - mei initialization wd.
*
* @dev: the device structure
* returns -ENENT if wd client cannot be found
* -EIO if write has failed
*/
int mei_wd_host_init(struct mei_device *dev)
{
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, "wd: check client\n");
if (MEI_FILE_CONNECTING != dev->wd_cl.state) {
dev_info(&dev->pdev->dev, "wd: failed to find the client\n");
return -ENOENT;
}
if (mei_connect(dev, &dev->wd_cl)) {
dev_err(&dev->pdev->dev, "wd: failed to connect to the client\n");
dev->wd_cl.state = MEI_FILE_DISCONNECTED;
dev->wd_cl.host_client_id = 0;
return -EIO;
}
dev->wd_cl.timer_count = CONNECT_TIMEOUT;
return 0;
}
/**
* mei_wd_host_init - connect to the watchdog client
*
* @dev: the device structure
* @me_cl: me client
*
* Return: -ENOTTY if wd client cannot be found
* -EIO if write has failed
* 0 on success
*/
int mei_wd_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
{
struct mei_cl *cl = &dev->wd_cl;
int ret;
mei_cl_init(cl, dev);
dev->wd_timeout = MEI_WD_DEFAULT_TIMEOUT;
dev->wd_state = MEI_WD_IDLE;
ret = mei_cl_link(cl, MEI_WD_HOST_CLIENT_ID);
if (ret < 0) {
dev_info(dev->dev, "wd: failed link client\n");
return ret;
}
ret = mei_cl_connect(cl, me_cl, NULL);
if (ret) {
dev_err(dev->dev, "wd: failed to connect = %d\n", ret);
mei_cl_unlink(cl);
return ret;
}
ret = mei_watchdog_register(dev);
if (ret) {
mei_cl_disconnect(cl);
mei_cl_unlink(cl);
}
return ret;
}
/**
* mei_amthif_host_init - mei initialization amthif client.
*
* @dev: the device structure
* @me_cl: me client
*
* Return: 0 on success, <0 on failure.
*/
int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
{
struct mei_cl *cl = &dev->iamthif_cl;
int ret;
mutex_lock(&dev->device_lock);
if (mei_cl_is_connected(cl)) {
ret = 0;
goto out;
}
dev->iamthif_state = MEI_IAMTHIF_IDLE;
mei_cl_init(cl, dev);
ret = mei_cl_link(cl);
if (ret < 0) {
dev_err(dev->dev, "amthif: failed cl_link %d\n", ret);
goto out;
}
ret = mei_cl_connect(cl, me_cl, NULL);
out:
mutex_unlock(&dev->device_lock);
return ret;
}
/**
* 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;
}
/**
* host_init_wd - mei initialization wd.
*
* @dev: the device structure
*/
void mei_wd_host_init(struct mei_device *dev)
{
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 = watchdog_timeout;
if (dev->wd_timeout > 0) {
mei_wd_start_setup(dev);
/* 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;
mei_host_init_iamthif(dev) ;
} else {
dev->wd_cl.timer_count = CONNECT_TIMEOUT;
}
} else {
dev_dbg(&dev->pdev->dev, "Failed to find WD client\n");
mei_host_init_iamthif(dev) ;
}
} else {
dev->wd_bypass = true;
dev_dbg(&dev->pdev->dev, "WD requested to be disabled\n");
mei_host_init_iamthif(dev) ;
}
}
/**
* mei_wd_host_init - connect to the watchdog client
*
* @dev: the device structure
*
* returns -ENENT if wd client cannot be found
* -EIO if write has failed
* 0 on success
*/
int mei_wd_host_init(struct mei_device *dev)
{
struct mei_cl *cl = &dev->wd_cl;
int i;
int ret;
mei_cl_init(cl, dev);
dev->wd_timeout = MEI_WD_DEFAULT_TIMEOUT;
dev->wd_state = MEI_WD_IDLE;
/* check for valid client id */
i = mei_me_cl_by_uuid(dev, &mei_wd_guid);
if (i < 0) {
dev_info(&dev->pdev->dev, "wd: failed to find the client\n");
return -ENOENT;
}
cl->me_client_id = dev->me_clients[i].client_id;
ret = mei_cl_link(cl, MEI_WD_HOST_CLIENT_ID);
if (ret < 0) {
dev_info(&dev->pdev->dev, "wd: failed link client\n");
return -ENOENT;
}
cl->state = MEI_FILE_CONNECTING;
ret = mei_cl_connect(cl, NULL);
if (ret) {
dev_err(&dev->pdev->dev, "wd: failed to connect = %d\n", ret);
mei_cl_unlink(cl);
return ret;
}
ret = mei_watchdog_register(dev);
if (ret) {
mei_cl_disconnect(cl);
mei_cl_unlink(cl);
}
return ret;
}
