/**
* 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;
}
sep_keymaster_return_t send_req_to_fw(const uint8_t * req,
const uint32_t req_len, const uint8_t * resp, const uint32_t resp_len) {
sep_keymaster_return_t result = SEP_KEYMASTER_FAILURE;
int Status = -1;
MEI_HANDLE *mei_handle = NULL;
//Connect to the TXEI driver
mei_handle = mei_connect(&ANDROID_HECI_AGENT_GUID);
if (!mei_handle) {
LOGERR("mei_connect failed\n");
result = SEP_KEYMASTER_HECI_CONNECT_FAILED;
goto exit;
}
//Send data to the FWout/target/product/byt_t_ffrd8/system/lib
Status = mei_snd_rcv(mei_handle, (void *) req, (uint32_t) req_len,
(void *) resp, (uint32_t) resp_len);
if (Status < 0) {
LOGERR("mei_snd_rcv failed\n");
result = SEP_KEYMASTER_HECI_SNDRCV_FAILED;
goto exit;
}
result = SEP_KEYMASTER_SUCCESS;
exit: if (mei_handle) {
mei_disconnect(mei_handle); //TODO: What happens if disconnect fails? Memory leak?
mei_handle = NULL;
}
return result;
}
/**
* 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) ;
}
}
uint32_t tee_init(const GUID *guid, void **ptrHandle)
{
*ptrHandle = (void *)mei_connect(guid);
if (*ptrHandle == NULL)
{
printf("ptrHandle error");
return TEE_FAILURE;
}
return TEE_SUCCESSFUL;
}
