// do not re-schedule while locked the timer ISR
// this needs to be real quick
static __inline__ bool __attribute__((always_inline)) _IsrTmrLock(OSAL_CRITSECT_DATA_TYPE* pCritStat)
{
*pCritStat = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_LOW);
return DRV_TMR_AlarmDisable(sSysTmrObject.driverHandle);
}
USB_DEVICE_CDC_RESULT USB_DEVICE_CDC_Write
(
USB_DEVICE_CDC_INDEX iCDC ,
USB_DEVICE_CDC_TRANSFER_HANDLE * transferHandle ,
const void * data , size_t size ,
USB_DEVICE_CDC_TRANSFER_FLAGS flags
)
{
unsigned int cnt;
unsigned int remainder;
USB_DEVICE_IRP * irp;
USB_DEVICE_IRP_FLAG irpFlag = 0;
USB_DEVICE_CDC_INSTANCE * thisCDCDevice;
USB_DEVICE_CDC_ENDPOINT * endpoint;
OSAL_RESULT osalError;
USB_ERROR irpError;
OSAL_CRITSECT_DATA_TYPE IntState;
/* Check the validity of the function driver index */
if ( iCDC >= USB_DEVICE_CDC_INSTANCES_NUMBER )
{
/* Invalid CDC index */
SYS_ASSERT(false, "Invalid CDC Device Index");
return USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_INVALID;
}
/* Initialize the transfer handle, get the instance object
* and the transmit endpoint */
* transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
thisCDCDevice = &gUSBDeviceCDCInstance[iCDC];
endpoint = &thisCDCDevice->dataInterface.endpoint[USB_DEVICE_CDC_ENDPOINT_TX];
if(!(endpoint->isConfigured))
{
/* This means that the endpoint is not configured yet */
SYS_ASSERT(false, "Endpoint not configured");
return (USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_NOT_CONFIGURED);
}
if(size == 0)
{
/* Size cannot be zero */
return (USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_SIZE_INVALID);
}
/* Check the flag */
if(flags & USB_DEVICE_CDC_TRANSFER_FLAGS_MORE_DATA_PENDING)
{
if(size < endpoint->maxPacketSize)
{
/* For a data pending flag, we must atleast get max packet
* size worth data */
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_SIZE_INVALID);
}
remainder = size % endpoint->maxPacketSize;
if(remainder != 0)
{
size -= remainder;
}
irpFlag = USB_DEVICE_IRP_FLAG_DATA_PENDING;
}
else if(flags & USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE)
{
irpFlag = USB_DEVICE_IRP_FLAG_DATA_COMPLETE;
}
if(thisCDCDevice->currentQSizeWrite >= thisCDCDevice->queueSizeWrite)
{
SYS_ASSERT(false, "Write Queue is full");
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
/*Obtain mutex to get access to a shared resource, check return value*/
osalError = OSAL_MUTEX_Lock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP, OSAL_WAIT_FOREVER);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed lock was not obtained, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* loop and find a free IRP in the Q */
for ( cnt = 0; cnt < USB_DEVICE_CDC_QUEUE_DEPTH_COMBINED; cnt ++ )
{
if(gUSBDeviceCDCIRP[cnt].status <
(USB_DEVICE_IRP_STATUS)USB_DEVICE_IRP_FLAG_DATA_PENDING)
{
/* This means the IRP is free */
irp = &gUSBDeviceCDCIRP[cnt];
irp->data = (void *)data;
irp->size = size;
irp->userData = (uintptr_t) iCDC;
irp->callback = _USB_DEVICE_CDC_WriteIRPCallback;
irp->flags = irpFlag;
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update the Write queue size */
thisCDCDevice->currentQSizeWrite++;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = (USB_DEVICE_CDC_TRANSFER_HANDLE)irp;
irpError = USB_DEVICE_IRPSubmit(thisCDCDevice->deviceHandle,
endpoint->address, irp);
/* If IRP Submit function returned any error, then invalidate the
Transfer handle. */
if (irpError != USB_ERROR_NONE )
{
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update the Write queue size */
thisCDCDevice->currentQSizeWrite--;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
return(irpError);
}
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* If here means we could not find a spare IRP */
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
USB_DEVICE_CDC_RESULT USB_DEVICE_CDC_SerialStateNotificationSend
(
USB_DEVICE_CDC_INDEX iCDC ,
USB_DEVICE_CDC_TRANSFER_HANDLE * transferHandle ,
USB_CDC_SERIAL_STATE * notificationData
)
{
unsigned int cnt;
USB_DEVICE_IRP * irp;
USB_DEVICE_CDC_ENDPOINT * endpoint;
USB_DEVICE_CDC_INSTANCE * thisCDCDevice;
OSAL_RESULT osalError;
USB_ERROR irpError;
OSAL_CRITSECT_DATA_TYPE IntState;
*transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
/* Check the validity of the function driver index */
if ( iCDC >= USB_DEVICE_CDC_INSTANCES_NUMBER )
{
/* Invalid CDC index */
SYS_ASSERT(false, "Invalid CDC Device Index");
return USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_INVALID;
}
thisCDCDevice = &gUSBDeviceCDCInstance[iCDC];
endpoint = &thisCDCDevice->notificationInterface.endpoint[USB_DEVICE_CDC_ENDPOINT_TX];
if(!(endpoint->isConfigured))
{
/* This means that the endpoint is not configured yet */
SYS_ASSERT(false, "Endpoint not configured");
return (USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_NOT_CONFIGURED);
}
if(thisCDCDevice->currentQSizeSerialStateNotification >=
thisCDCDevice->queueSizeSerialStateNotification)
{
SYS_ASSERT(false, "Serial State Notification Send Queue is full");
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
/*Obtain mutex to get access to a shared resource, check return value*/
osalError = OSAL_MUTEX_Lock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP, OSAL_WAIT_FOREVER);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed lock was not obtained, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* Loop and find a free IRP in the Q */
for ( cnt = 0; cnt < USB_DEVICE_CDC_QUEUE_DEPTH_COMBINED; cnt ++ )
{
if(gUSBDeviceCDCIRP[cnt].status < (USB_DEVICE_IRP_STATUS)USB_DEVICE_IRP_FLAG_DATA_PENDING)
{
/* This means the IRP is free */
irp = &gUSBDeviceCDCIRP[cnt];
irp->data = notificationData;
irp->size = sizeof(USB_CDC_SERIAL_STATE);
irp->userData = (uintptr_t) iCDC;
irp->callback = _USB_DEVICE_CDC_SerialStateSendIRPCallback;
irp->flags = USB_DEVICE_IRP_FLAG_DATA_COMPLETE;
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update Serial State Notification Queue Size */
thisCDCDevice->currentQSizeSerialStateNotification ++;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = (USB_DEVICE_CDC_TRANSFER_HANDLE) irp;
irpError = USB_DEVICE_IRPSubmit(thisCDCDevice->deviceHandle, endpoint->address, irp);
/* If IRP Submit function returned any error, then invalidate the
Transfer handle. */
if (irpError != USB_ERROR_NONE )
{
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update Serial State Notification Queue Size */
thisCDCDevice->currentQSizeSerialStateNotification --;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
return(irpError);
}
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* If here means we could not find a spare IRP */
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
USB_DEVICE_CDC_RESULT USB_DEVICE_CDC_Read
(
USB_DEVICE_CDC_INDEX iCDC ,
USB_DEVICE_CDC_TRANSFER_HANDLE * transferHandle ,
void * data , size_t size
)
{
unsigned int cnt;
unsigned int remainder;
USB_DEVICE_IRP * irp;
USB_DEVICE_CDC_ENDPOINT * endpoint;
USB_DEVICE_CDC_INSTANCE * thisCDCDevice;
OSAL_RESULT osalError;
USB_ERROR irpError;
OSAL_CRITSECT_DATA_TYPE IntState;
/* Check the validity of the function driver index */
if ( iCDC >= USB_DEVICE_CDC_INSTANCES_NUMBER )
{
/* Invalid CDC index */
SYS_ASSERT(false, "Invalid CDC Device Index");
return USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_INVALID;
}
thisCDCDevice = &gUSBDeviceCDCInstance[iCDC];
endpoint = &thisCDCDevice->dataInterface.endpoint[USB_DEVICE_CDC_ENDPOINT_RX];
*transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
/* Check if the endpoint is configured */
if(!(endpoint->isConfigured))
{
/* This means that the endpoint is not configured yet */
SYS_ASSERT(false, "Endpoint not configured");
return (USB_DEVICE_CDC_RESULT_ERROR_INSTANCE_NOT_CONFIGURED);
}
/* For read the size should be a multiple of endpoint size*/
remainder = size % endpoint->maxPacketSize;
if((size == 0) || (remainder != 0))
{
/* Size is not valid */
SYS_ASSERT(false, "Invalid size in IRP read");
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_SIZE_INVALID);
}
/* Make sure that we are with in the queue size for this instance */
if(thisCDCDevice->currentQSizeRead >= thisCDCDevice->queueSizeRead)
{
SYS_ASSERT(false, "Read Queue is full");
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
/*Obtain mutex to get access to a shared resource, check return value*/
osalError = OSAL_MUTEX_Lock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP, OSAL_WAIT_FOREVER);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed lock was not obtained, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* Loop and find a free IRP in the Q */
for ( cnt = 0; cnt < USB_DEVICE_CDC_QUEUE_DEPTH_COMBINED; cnt ++ )
{
if(gUSBDeviceCDCIRP[cnt].status <
(USB_DEVICE_IRP_STATUS)USB_DEVICE_IRP_FLAG_DATA_PENDING)
{
/* This means the IRP is free. Configure the IRP
* update the current queue size and then submit */
irp = &gUSBDeviceCDCIRP[cnt];
irp->data = data;
irp->size = size;
irp->userData = (uintptr_t) iCDC;
irp->callback = _USB_DEVICE_CDC_ReadIRPCallback;
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update the read queue size */
thisCDCDevice->currentQSizeRead++;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = (USB_DEVICE_CDC_TRANSFER_HANDLE)irp;
irpError = USB_DEVICE_IRPSubmit(thisCDCDevice->deviceHandle,
endpoint->address, irp);
/* If IRP Submit function returned any error, then invalidate the
Transfer handle. */
if (irpError != USB_ERROR_NONE )
{
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update the read queue size */
thisCDCDevice->currentQSizeRead--;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
return(irpError);
}
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&gUSBDeviceCdcCommonDataObj.mutexCDCIRP);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed unlock was not complete, or error occurred, let user know about error*/
return (USB_DEVICE_CDC_RESULT_ERROR);
}
/* If here means we could not find a spare IRP */
return(USB_DEVICE_CDC_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
USB_DEVICE_RESULT USB_DEVICE_EndpointWrite
(
USB_DEVICE_HANDLE usbDeviceHandle,
USB_DEVICE_TRANSFER_HANDLE * transferHandle,
USB_ENDPOINT_ADDRESS endpoint,
const void * data,
size_t size,
USB_DEVICE_TRANSFER_FLAGS flags
)
{
int count = 0;
USB_DEVICE_OBJ* devClientHandle;
USB_ERROR irpSubmitError;
SYS_MODULE_INDEX deviceInstanceNumber;
USB_DEVICE_Q_SIZE_ENDPOINT* thisEndpointQueueSize;
USB_DEVICE_IRP * irp ;
OSAL_RESULT osalError;
*transferHandle = USB_DEVICE_TRANSFER_HANDLE_INVALID;
OSAL_CRITSECT_DATA_TYPE IntState;
/* Validate the handle */
devClientHandle = _USB_DEVICE_ClientHandleValidate(usbDeviceHandle);
if (devClientHandle == NULL)
{
SYS_DEBUG(0, "USB Device Layer: Invalid Client Handle");
return(USB_DEVICE_RESULT_ERROR_DEVICE_HANDLE_INVALID);
}
/* Get Device Instance Number */
deviceInstanceNumber = devClientHandle->usbDevLayerIndex;
/* Get Handle to the Endpoint Queue Size structure */
thisEndpointQueueSize = &qSizeEndpoint[deviceInstanceNumber];
/* Make sure that we are with in the queue size for this instance */
if(thisEndpointQueueSize->qSizeCurrentEpWrite >= thisEndpointQueueSize->qSizeMaxEpWrite)
{
SYS_DEBUG(0, "Write Queue is full");
return(USB_DEVICE_RESULT_ERROR_TRANSFER_QUEUE_FULL);
}
/*Obtain mutex to get access to a shared resource, check return value*/
osalError = OSAL_MUTEX_Lock(&(devClientHandle->mutexEndpointIRP), OSAL_WAIT_FOREVER);
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed lock was not obtained, or error occurred, let user know about error*/
return (USB_DEVICE_RESULT_ERROR);
}
/* Check if the if there is free slot available in queue */
for(count = 0; count < (USB_DEVICE_ENDPOINT_QUEUE_DEPTH_COMBINED) ; count ++ )
{
if(gUSBDeviceEndpointIRP[count].status <
(USB_DEVICE_IRP_STATUS)USB_DEVICE_IRP_FLAG_DATA_PENDING)
{
/* This means the IRP is free. Configure the IRP
* update the current queue size and then submit */
irp = &gUSBDeviceEndpointIRP[count];
irp->data = (void *)data;
irp->size = size;
irp->flags = flags;
irp->callback = &_USB_DEVICE_EndpointWriteCallBack;
irp->userData = (uintptr_t)devClientHandle;
(* transferHandle) = ( USB_DEVICE_TRANSFER_HANDLE )irp;
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
(thisEndpointQueueSize->qSizeCurrentEpWrite)++;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
irpSubmitError = USB_DEVICE_IRPSubmit( devClientHandle, endpoint, irp);
/* If IRP Submit function returned any error, then invalidate the
Transfer handle. */
if (irpSubmitError != USB_ERROR_NONE )
{
/* Prevent other tasks pre-empting this sequence of code */
IntState = OSAL_CRIT_Enter(OSAL_CRIT_TYPE_HIGH);
/* Update the read queue size */
(thisEndpointQueueSize->qSizeCurrentEpWrite)--;
OSAL_CRIT_Leave(OSAL_CRIT_TYPE_HIGH, IntState);
*transferHandle = USB_DEVICE_TRANSFER_HANDLE_INVALID;
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&(devClientHandle->mutexEndpointIRP));
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed lock was not obtained, or error occurred, let user know about error*/
return (USB_DEVICE_RESULT_ERROR);
}
return(irpSubmitError);
}
}
/*Release mutex, done with shared resource*/
osalError = OSAL_MUTEX_Unlock(&(devClientHandle->mutexEndpointIRP));
if(osalError != OSAL_RESULT_TRUE)
{
/*Do not proceed, unlock was not completed, or error occurred, let user know about error*/
return (USB_DEVICE_RESULT_ERROR);
}
/* We could not find a spare IRP */
SYS_DEBUG(0, "USB Device Endpoint Write: Transfer queue is full");
return USB_DEVICE_RESULT_ERROR_TRANSFER_QUEUE_FULL;
}