/*!
* @brief Allocate a device common class handle.
*
* This function allocates a a device common class handle.
*
* @param controllerId The controller id of the USB IP. Please refer to the enumeration usb_controller_index_t.
* @param handle It is out parameter, is used to return pointer of the device common class handle to the
* caller.
*
* @retval kStatus_USB_Success Get a device handle successfully.
* @retval kStatus_USB_Busy Cannot allocate a common class handle.
* @retval kStatus_USB_Error The common class has been initialized.
*/
static usb_status_t USB_DeviceClassAllocateHandle(uint8_t controllerId, usb_device_common_class_struct_t **handle)
{
int32_t count;
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
/* Check the controller is initialized or not. */
for (count = 0U; count < USB_DEVICE_CONFIG_NUM; count++)
{
if ((NULL != s_UsbDeviceCommonClassStruct[count].handle) &&
(controllerId == s_UsbDeviceCommonClassStruct[count].controllerId))
{
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Error;
}
}
/* Get a free common class handle. */
for (count = 0U; count < USB_DEVICE_CONFIG_NUM; count++)
{
if (NULL == s_UsbDeviceCommonClassStruct[count].handle)
{
s_UsbDeviceCommonClassStruct[count].controllerId = controllerId;
*handle = &s_UsbDeviceCommonClassStruct[count];
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Success;
}
}
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Busy;
}
static void USB_HostReleaseInstance(usb_host_instance_t *hostInstance)
{
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
hostInstance->occupied = 0;
USB_OSA_EXIT_CRITICAL();
}
static usb_host_instance_t *USB_HostGetInstance(void)
{
uint8_t i = 0;
uint32_t index = 0;
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
for (; i < USB_HOST_CONFIG_MAX_HOST; i++)
{
if (g_UsbHostInstance[i].occupied != 1)
{
uint8_t *buffer = (uint8_t *)&g_UsbHostInstance[i];
for (uint32_t j = 0U; j < sizeof(usb_host_instance_t); j++)
{
buffer[j] = 0x00U;
}
g_UsbHostInstance[i].occupied = 1;
USB_OSA_EXIT_CRITICAL();
for (index = 0; index < USB_HOST_CONFIG_MAX_TRANSFERS; ++index)
{
g_UsbHostInstance[i].transferList[index].setupPacket =
(usb_setup_struct_t *)&(s_Setupbuffer[i][index][0]);
}
return &g_UsbHostInstance[i];
}
}
USB_OSA_EXIT_CRITICAL();
return NULL;
}
/*!
* @brief Get the device handle according to the controller id.
*
* This function gets the device handle according to the controller id.
*
* @param controllerId The controller id of the USB IP. Please refer to the enumeration usb_controller_index_t.
* @param handle It is out parameter, is used to return pointer of the device handle to the caller.
*
* @retval kStatus_USB_Success Free device hanlde successfully.
* @retval kStatus_USB_InvalidParameter The device handle not be found.
*/
usb_status_t USB_DeviceClassGetDeviceHandle(uint8_t controllerId, usb_device_handle *handle)
{
int32_t count = 0U;
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
for (; count < USB_DEVICE_CONFIG_NUM; count++)
{
if ((NULL != s_UsbDeviceCommonClassStruct[count].handle) &&
(controllerId == s_UsbDeviceCommonClassStruct[count].controllerId))
{
*handle = s_UsbDeviceCommonClassStruct[count].handle;
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Success;
}
}
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_InvalidParameter;
}
/*!
* @brief Get the device common class handle according to the device handle.
*
* This function gets the device common class handle according to the device handle.
*
* @param deviceHandle The device handle, got from the USB_DeviceInit.
* @param handle It is out parameter, is used to return pointer of the device common class handle to the
* caller.
*
* @retval kStatus_USB_Success Free device hanlde successfully.
* @retval kStatus_USB_InvalidParameter The common class can not be found.
*/
static usb_status_t USB_DeviceClassGetHandleByDeviceHandle(usb_device_handle deviceHandle,
usb_device_common_class_struct_t **handle)
{
int32_t count = 0U;
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
for (; count < USB_DEVICE_CONFIG_NUM; count++)
{
if (deviceHandle == s_UsbDeviceCommonClassStruct[count].handle)
{
*handle = &s_UsbDeviceCommonClassStruct[count];
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Success;
}
}
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_InvalidParameter;
}
/*!
* @brief Free a device common class handle.
*
* This function frees a device common class handle.
*
* @param controllerId The controller id of the USB IP. Please refer to the enumeration usb_controller_index_t.
*
* @retval kStatus_USB_Success Free device hanlde successfully.
* @retval kStatus_USB_InvalidParameter The common class can not be found.
*/
static usb_status_t USB_DeviceClassFreeHandle(uint8_t controllerId)
{
int32_t count = 0U;
USB_OSA_SR_ALLOC();
USB_OSA_ENTER_CRITICAL();
for (; count < USB_DEVICE_CONFIG_NUM; count++)
{
if ((NULL != s_UsbDeviceCommonClassStruct[count].handle) &&
(controllerId == s_UsbDeviceCommonClassStruct[count].controllerId))
{
s_UsbDeviceCommonClassStruct[count].handle = NULL;
s_UsbDeviceCommonClassStruct[count].configList = (usb_device_class_config_list_struct_t *)NULL;
s_UsbDeviceCommonClassStruct[count].controllerId = 0U;
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_Success;
}
}
USB_OSA_EXIT_CRITICAL();
return kStatus_USB_InvalidParameter;
}
