/**
* @brief USBH_HandleControl
* Handles the USB control transfer state machine
* @param phost: Host Handle
* @retval USBH Status
*/
static USBH_StatusTypeDef USBH_HandleControl (USBH_HandleTypeDef *phost)
{
uint8_t direction;
USBH_StatusTypeDef status = USBH_BUSY;
USBH_URBStateTypeDef URB_Status = USBH_URB_IDLE;
switch (phost->Control.state)
{
case CTRL_SETUP:
/* send a SETUP packet */
USBH_CtlSendSetup (phost,
(uint8_t *)phost->Control.setup.d8 ,
phost->Control.pipe_out);
phost->Control.state = CTRL_SETUP_WAIT;
break;
case CTRL_SETUP_WAIT:
URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_out);
/* case SETUP packet sent successfully */
if(URB_Status == USBH_URB_DONE)
{
direction = (phost->Control.setup.b.bmRequestType & USB_REQ_DIR_MASK);
/* check if there is a data stage */
if (phost->Control.setup.b.wLength.w != 0 )
{
if (direction == USB_D2H)
{
/* Data Direction is IN */
phost->Control.state = CTRL_DATA_IN;
}
else
{
/* Data Direction is OUT */
phost->Control.state = CTRL_DATA_OUT;
}
}
/* No DATA stage */
else
{
/* If there is No Data Transfer Stage */
if (direction == USB_D2H)
{
/* Data Direction is IN */
phost->Control.state = CTRL_STATUS_OUT;
}
else
{
/* Data Direction is OUT */
phost->Control.state = CTRL_STATUS_IN;
}
}
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if(URB_Status == USBH_URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
break;
case CTRL_DATA_IN:
/* Issue an IN token */
phost->Control.timer = phost->Timer;
USBH_CtlReceiveData(phost,
phost->Control.buff,
phost->Control.length,
phost->Control.pipe_in);
phost->Control.state = CTRL_DATA_IN_WAIT;
break;
case CTRL_DATA_IN_WAIT:
URB_Status = USBH_LL_GetURBState(phost , phost->Control.pipe_in);
/* check is DATA packet transfered successfully */
if (URB_Status == USBH_URB_DONE)
{
phost->Control.state = CTRL_STATUS_OUT;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
/* manage error cases*/
if (URB_Status == USBH_URB_STALL)
{
/* In stall case, return to previous machine state*/
status = USBH_NOT_SUPPORTED;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_ERROR)
{
/* Device error */
phost->Control.state = CTRL_ERROR;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
break;
case CTRL_DATA_OUT:
USBH_CtlSendData (phost,
phost->Control.buff,
phost->Control.length ,
phost->Control.pipe_out,
1);
phost->Control.timer = phost->Timer;
phost->Control.state = CTRL_DATA_OUT_WAIT;
break;
case CTRL_DATA_OUT_WAIT:
URB_Status = USBH_LL_GetURBState(phost , phost->Control.pipe_out);
if (URB_Status == USBH_URB_DONE)
{ /* If the Setup Pkt is sent successful, then change the state */
phost->Control.state = CTRL_STATUS_IN;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
/* handle error cases */
else if (URB_Status == USBH_URB_STALL)
{
/* In stall case, return to previous machine state*/
phost->Control.state = CTRL_STALLED;
status = USBH_NOT_SUPPORTED;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_NOTREADY)
{
/* Nack received from device */
phost->Control.state = CTRL_DATA_OUT;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_ERROR)
{
/* device error */
phost->Control.state = CTRL_ERROR;
status = USBH_FAIL;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
break;
case CTRL_STATUS_IN:
/* Send 0 bytes out packet */
USBH_CtlReceiveData (phost,
0,
0,
phost->Control.pipe_in);
phost->Control.timer = phost->Timer;
phost->Control.state = CTRL_STATUS_IN_WAIT;
break;
case CTRL_STATUS_IN_WAIT:
URB_Status = USBH_LL_GetURBState(phost , phost->Control.pipe_in);
if ( URB_Status == USBH_URB_DONE)
{ /* Control transfers completed, Exit the State Machine */
phost->Control.state = CTRL_COMPLETE;
status = USBH_OK;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if(URB_Status == USBH_URB_STALL)
{
/* Control transfers completed, Exit the State Machine */
status = USBH_NOT_SUPPORTED;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
break;
case CTRL_STATUS_OUT:
USBH_CtlSendData (phost,
0,
0,
phost->Control.pipe_out,
1);
phost->Control.timer = phost->Timer;
phost->Control.state = CTRL_STATUS_OUT_WAIT;
break;
case CTRL_STATUS_OUT_WAIT:
URB_Status = USBH_LL_GetURBState(phost , phost->Control.pipe_out);
if (URB_Status == USBH_URB_DONE)
{
status = USBH_OK;
phost->Control.state = CTRL_COMPLETE;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_NOTREADY)
{
phost->Control.state = CTRL_STATUS_OUT;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
else if (URB_Status == USBH_URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CONTROL_EVENT, 0);
#endif
}
break;
case CTRL_ERROR:
/*
After a halt condition is encountered or an error is detected by the
host, a control endpoint is allowed to recover by accepting the next Setup
PID; i.e., recovery actions via some other pipe are not required for control
endpoints. For the Default Control Pipe, a device reset will ultimately be
required to clear the halt or error condition if the next Setup PID is not
accepted.
*/
if (++ phost->Control.errorcount <= USBH_MAX_ERROR_COUNT)
{
/* try to recover control */
USBH_LL_Stop(phost);
/* Do the transmission again, starting from SETUP Packet */
phost->Control.state = CTRL_SETUP;
phost->RequestState = CMD_SEND;
}
else
{
phost->Control.errorcount = 0;
USBH_ErrLog("Control error");
status = USBH_FAIL;
}
break;
default:
break;
}
return status;
}
/**
* @brief USBH_HandleControl
* Handles the USB control transfer state machine
* @param pdev: Selected device
* @retval Status
*/
USBH_Status USBH_HandleControl (USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
uint8_t direction;
static uint16_t timeout = 0;
USBH_Status status = USBH_OK;
URB_STATE URB_Status = URB_IDLE;
phost->Control.status = CTRL_START;
switch (phost->Control.state)
{
case CTRL_SETUP:
/* send a SETUP packet */
USBH_CtlSendSetup (pdev,
phost->Control.setup.d8 ,
phost->Control.hc_num_out);
phost->Control.state = CTRL_SETUP_WAIT;
break;
case CTRL_SETUP_WAIT:
URB_Status = HCD_GetURB_State(pdev , phost->Control.hc_num_out);
/* case SETUP packet sent successfully */
if(URB_Status == URB_DONE)
{
direction = (phost->Control.setup.b.bmRequestType & USB_REQ_DIR_MASK);
/* check if there is a data stage */
if (phost->Control.setup.b.wLength.w != 0 )
{
timeout = DATA_STAGE_TIMEOUT;
if (direction == USB_D2H)
{
/* Data Direction is IN */
phost->Control.state = CTRL_DATA_IN;
}
else
{
/* Data Direction is OUT */
phost->Control.state = CTRL_DATA_OUT;
}
}
/* No DATA stage */
else
{
timeout = NODATA_STAGE_TIMEOUT;
/* If there is No Data Transfer Stage */
if (direction == USB_D2H)
{
/* Data Direction is IN */
phost->Control.state = CTRL_STATUS_OUT;
}
else
{
/* Data Direction is OUT */
phost->Control.state = CTRL_STATUS_IN;
}
}
/* Set the delay timer to enable timeout for data stage completion */
phost->Control.timer = HCD_GetCurrentFrame(pdev);
}
else if(URB_Status == URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
phost->Control.status = CTRL_XACTERR;
}
break;
case CTRL_DATA_IN:
/* Issue an IN token */
USBH_CtlReceiveData(pdev,
phost->Control.buff,
phost->Control.length,
phost->Control.hc_num_in);
phost->Control.state = CTRL_DATA_IN_WAIT;
break;
case CTRL_DATA_IN_WAIT:
URB_Status = HCD_GetURB_State(pdev , phost->Control.hc_num_in);
/* check is DATA packet transfered successfully */
if (URB_Status == URB_DONE)
{
phost->Control.state = CTRL_STATUS_OUT;
}
/* manage error cases*/
if (URB_Status == URB_STALL)
{
/* In stall case, return to previous machine state*/
phost->gState = phost->gStateBkp;
}
else if (URB_Status == URB_ERROR)
{
/* Device error */
phost->Control.state = CTRL_ERROR;
}
else if ((HCD_GetCurrentFrame(pdev)- phost->Control.timer) > timeout)
{
/* timeout for IN transfer */
phost->Control.state = CTRL_ERROR;
}
break;
case CTRL_DATA_OUT:
/* Start DATA out transfer (only one DATA packet)*/
pdev->host.hc[phost->Control.hc_num_out].toggle_out = 1;
USBH_CtlSendData (pdev,
phost->Control.buff,
phost->Control.length ,
phost->Control.hc_num_out);
phost->Control.state = CTRL_DATA_OUT_WAIT;
break;
case CTRL_DATA_OUT_WAIT:
URB_Status = HCD_GetURB_State(pdev , phost->Control.hc_num_out);
if (URB_Status == URB_DONE)
{ /* If the Setup Pkt is sent successful, then change the state */
phost->Control.state = CTRL_STATUS_IN;
}
/* handle error cases */
else if (URB_Status == URB_STALL)
{
/* In stall case, return to previous machine state*/
phost->gState = phost->gStateBkp;
phost->Control.state = CTRL_STALLED;
}
else if (URB_Status == URB_NOTREADY)
{
/* Nack received from device */
phost->Control.state = CTRL_DATA_OUT;
}
else if (URB_Status == URB_ERROR)
{
/* device error */
phost->Control.state = CTRL_ERROR;
}
break;
case CTRL_STATUS_IN:
/* Send 0 bytes out packet */
USBH_CtlReceiveData (pdev,
0,
0,
phost->Control.hc_num_in);
phost->Control.state = CTRL_STATUS_IN_WAIT;
break;
case CTRL_STATUS_IN_WAIT:
URB_Status = HCD_GetURB_State(pdev , phost->Control.hc_num_in);
if ( URB_Status == URB_DONE)
{ /* Control transfers completed, Exit the State Machine */
phost->gState = phost->gStateBkp;
phost->Control.state = CTRL_COMPLETE;
}
else if (URB_Status == URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
}
else if((HCD_GetCurrentFrame(pdev)\
- phost->Control.timer) > timeout)
{
phost->Control.state = CTRL_ERROR;
}
else if(URB_Status == URB_STALL)
{
/* Control transfers completed, Exit the State Machine */
phost->gState = phost->gStateBkp;
phost->Control.status = CTRL_STALL;
status = USBH_NOT_SUPPORTED;
}
break;
case CTRL_STATUS_OUT:
pdev->host.hc[phost->Control.hc_num_out].toggle_out ^= 1;
USBH_CtlSendData (pdev,
0,
0,
phost->Control.hc_num_out);
phost->Control.state = CTRL_STATUS_OUT_WAIT;
break;
case CTRL_STATUS_OUT_WAIT:
URB_Status = HCD_GetURB_State(pdev , phost->Control.hc_num_out);
if (URB_Status == URB_DONE)
{
phost->gState = phost->gStateBkp;
phost->Control.state = CTRL_COMPLETE;
}
else if (URB_Status == URB_NOTREADY)
{
phost->Control.state = CTRL_STATUS_OUT;
}
else if (URB_Status == URB_ERROR)
{
phost->Control.state = CTRL_ERROR;
}
break;
case CTRL_ERROR:
/*
After a halt condition is encountered or an error is detected by the
host, a control endpoint is allowed to recover by accepting the next Setup
PID; i.e., recovery actions via some other pipe are not required for control
endpoints. For the Default Control Pipe, a device reset will ultimately be
required to clear the halt or error condition if the next Setup PID is not
accepted.
*/
if (++ phost->Control.errorcount <= USBH_MAX_ERROR_COUNT)
{
/* Do the transmission again, starting from SETUP Packet */
phost->Control.state = CTRL_SETUP;
}
else
{
phost->Control.status = CTRL_FAIL;
phost->gState = phost->gStateBkp;
status = USBH_FAIL;
}
break;
default:
break;
}
return status;
}
static int _usb_ctrl_request_handle(USB_OTG_CORE_HANDLE *pdev ,
USBH_HOST *phost,
wifi_usb_adapter_t *adapter)
{
wifi_usb_ctrl_request_t *ctl_req = &adapter->usb_ctrl_req;
unsigned char direction;
static unsigned short timeout = 0;
URB_STATE URB_Status = URB_IDLE;
int status = 1;
phost->Control.status = CTRL_START;
switch (ctl_req->state) {
case CTRL_IDLE:
status = 0; /* indicate the state machine could be blocked */
break;
case CTRL_SETUP:
/* Send a SETUP packet. */
pdev->host.hc[ctl_req->hc_num_out].toggle_out = 0;
USBH_CtlSendSetup(pdev, ctl_req->ctrlreq.d8, ctl_req->hc_num_out);
ctl_req->state = CTRL_SETUP_WAIT;
break;
case CTRL_SETUP_WAIT:
URB_Status = HCD_GetURB_State(pdev , ctl_req->hc_num_out);
ctl_req->status = URB_Status;
if (URB_Status == URB_DONE) {
direction = (ctl_req->ctrlreq.b.bmRequestType & USB_REQ_DIR_MASK);
/* check if there is a data stage. */
if (ctl_req->ctrlreq.b.wLength.w != 0) {
timeout = CTRL_DATA_STAGE_TIMEOUT;
if (direction == USB_D2H) {
/* Data Direction is IN. */
ctl_req->state = CTRL_DATA_IN;
}
else {
/* Data Direction is OUT. */
ctl_req->state = CTRL_DATA_OUT;
}
}
/* No DATA stage. */
else {
timeout = CTRL_NODATA_STAGE_TIMEOUT;
/* If there is No Data Transfer Stage. */
if (direction == USB_D2H) {
/* Data Direction is IN. */
ctl_req->state = CTRL_STATUS_OUT;
}
else {
/* Data Direction is OUT. */
ctl_req->state = CTRL_STATUS_IN;
}
}
/* Set the delay timer to enable timeout for data stage completion. */
ctl_req->timer = HCD_GetCurrentFrame(pdev);
}
else if (URB_Status == URB_ERROR) {
ctl_req->state = CTRL_ERROR;
/* To be add. */
}
break;
case CTRL_DATA_IN:
/* Issue an IN token. */
USBH_CtlReceiveData(pdev,
ctl_req->buffer,
ctl_req->length,
ctl_req->hc_num_in);
ctl_req->state = CTRL_DATA_IN_WAIT;
break;
case CTRL_DATA_IN_WAIT:
USB_OTG_BSP_uDelay(200);
URB_Status = HCD_GetURB_State(pdev , ctl_req->hc_num_in);
ctl_req->status = URB_Status;
/* check is DATA packet transfered successfully. */
if (URB_Status == URB_DONE) {
ctl_req->state = CTRL_STATUS_OUT;
}
/* manage error cases. */
else if (URB_Status == URB_STALL) {
ctl_req->state = CTRL_ERROR;
}
else if (URB_Status == URB_ERROR) {
/* Device error. */
ctl_req->state = CTRL_ERROR;
}
break;
case CTRL_DATA_OUT:
/* Start DATA out transfer (only one DATA packet). */
USB_OTG_BSP_uDelay(200);
pdev->host.hc[ctl_req->hc_num_out].toggle_out ^= 1;
USBH_CtlSendData(pdev,
ctl_req->buffer,
ctl_req->length ,
ctl_req->hc_num_out);
ctl_req->state = CTRL_DATA_OUT_WAIT;
break;
case CTRL_DATA_OUT_WAIT:
URB_Status = HCD_GetURB_State(pdev, ctl_req->hc_num_out);
ctl_req->status = URB_Status;
if (URB_Status == URB_DONE) {
/* If the Setup Pkt is sent successful, then change the state. */
ctl_req->state = CTRL_STATUS_IN;
}
/* handle error cases. */
else if (URB_Status == URB_STALL) {
ctl_req->state = CTRL_ERROR;
}
else if (URB_Status == URB_NOTREADY) {
/* Nack received from device. */
ctl_req->state = CTRL_DATA_OUT;
}
else if (URB_Status == URB_ERROR) {
/* device error */
ctl_req->state = CTRL_ERROR;
}
break;
case CTRL_STATUS_IN:
/* Send 0 bytes out packet. */
USB_OTG_BSP_uDelay(200);
USBH_CtlReceiveData(pdev,
0,
0,
ctl_req->hc_num_in);
ctl_req->state = CTRL_STATUS_IN_WAIT;
break;
case CTRL_STATUS_IN_WAIT:
URB_Status = HCD_GetURB_State(pdev, ctl_req->hc_num_in);
ctl_req->status = URB_Status;
if (URB_Status == URB_DONE) {
/* Control transfers completed, Exit the State Machine */
ctl_req->state = CTRL_IDLE;
_usb_control_complete(adapter);
}
else if (URB_Status == URB_ERROR) {
ctl_req->state = CTRL_ERROR;
}
else if (URB_Status == URB_STALL) {
ctl_req->state = URB_STALL; /* NOTICE: here maybe a error to be fixed!!! */
}
break;
case CTRL_STATUS_OUT:
USB_OTG_BSP_uDelay(200);
pdev->host.hc[ctl_req->hc_num_out].toggle_out ^= 1;
USBH_CtlSendData(pdev,
0,
0,
ctl_req->hc_num_out);
ctl_req->state = CTRL_STATUS_OUT_WAIT;
break;
case CTRL_STATUS_OUT_WAIT:
URB_Status = HCD_GetURB_State(pdev, ctl_req->hc_num_out);
ctl_req->status = URB_Status;
if (URB_Status == URB_DONE) {
ctl_req->state = CTRL_IDLE;
_usb_control_complete(adapter);
}
else if (URB_Status == URB_NOTREADY) {
ctl_req->state = CTRL_STATUS_OUT;
}
else if (URB_Status == URB_ERROR) {
ctl_req->state = CTRL_ERROR;
}
break;
case CTRL_ERROR:
DBGPRINT(WHED_DEBUG_ERROR, "PANIC(%s - %d): %s - control urb failed(%d), bRequestType = 0x%x, bRequest = 0x%x, wValue = 0x%x, wIndex = 0x%x, wLength = 0x%x.\n",
__FILE__, __LINE__, __FUNCTION__,
ctl_req->status,
ctl_req->ctrlreq.b.bmRequestType,
ctl_req->ctrlreq.b.bRequest,
ctl_req->ctrlreq.b.wValue.w,
ctl_req->ctrlreq.b.wIndex.w,
ctl_req->ctrlreq.b.wLength.w);
if (ctl_req->retry) {
ctl_req->retry--;
/* Do the transmission again, starting from SETUP Packet. */
ctl_req->state = CTRL_SETUP;
}
else {
ctl_req->state = CTRL_IDLE;
_usb_control_complete(adapter);
}
break;
default:
break;
}
timeout = timeout; /* avoid compiler's warning */
return status;
}