/*
             LUFA Library
     Copyright (C) Dean Camera, 2019.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2019  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  USB Device Mode management functions and variables. This file contains the LUFA code required to
 *  manage the USB Mass Storage device mode.
 */

#include "USBDeviceMode.h"

/** Message buffer for RNDIS messages processed by the RNDIS device class driver. */
static uint8_t RNDIS_Message_Buffer[192];

/** LUFA RNDIS Class driver interface configuration and state information. This structure is
 *  passed to all RNDIS Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_RNDIS_Device_t Ethernet_RNDIS_Interface_Device =
	{
		.Config =
			{
				.ControlInterfaceNumber         = INTERFACE_ID_CDC_CCI,
				.DataINEndpoint                 =
					{
						.Address                = CDC_TX_EPADDR,
						.Size                   = CDC_TXRX_EPSIZE,
						.Banks                  = 1,
					},
				.DataOUTEndpoint                =
					{
						.Address                = CDC_RX_EPADDR,
						.Size                   = CDC_TXRX_EPSIZE,
						.Banks                  = 1,
					},
				.NotificationEndpoint           =
					{
						.Address                = CDC_NOTIFICATION_EPADDR,
						.Size                   = CDC_NOTIFICATION_EPSIZE,
						.Banks                  = 1,
					},
				.AdapterVendorDescription       = "LUFA RNDIS Adapter",
				.AdapterMACAddress              = {{0x02, 0x00, 0x02, 0x00, 0x02, 0x00}},
				.MessageBuffer                  = RNDIS_Message_Buffer,
				.MessageBufferLength            = sizeof(RNDIS_Message_Buffer),
			},
	};

/** LUFA Mass Storage Class driver interface configuration and state information. This structure is
 *  passed to all Mass Storage Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_MS_Device_t Disk_MS_Interface =
	{
		.Config =
			{
				.InterfaceNumber                = INTERFACE_ID_MassStorage,
				.DataINEndpoint                 =
					{
						.Address                = MASS_STORAGE_IN_EPADDR,
						.Size                   = MASS_STORAGE_IO_EPSIZE,
						.Banks                  = 1,
					},
				.DataOUTEndpoint                =
					{
						.Address                = MASS_STORAGE_OUT_EPADDR,
						.Size                   = MASS_STORAGE_IO_EPSIZE,
						.Banks                  = 1,
					},
				.TotalLUNs                 = 1,
			},
	};


/** USB device mode management task. This function manages the Mass Storage Device class driver when the device is
 *  initialized in USB device mode.
 */
void USBDeviceMode_USBTask(void)
{
	if (USB_CurrentMode != USB_MODE_Device)
	  return;

	uIPManagement_ManageNetwork();

	RNDIS_Device_USBTask(&Ethernet_RNDIS_Interface_Device);
	MS_Device_USBTask(&Disk_MS_Interface);
}

/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);

	uIPManagement_Init();
}

/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
	bool ConfigSuccess = true;

	ConfigSuccess &= RNDIS_Device_ConfigureEndpoints(&Ethernet_RNDIS_Interface_Device);
	ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);

	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}

/** Event handler for the library USB Control Request reception event. */
void EVENT_USB_Device_ControlRequest(void)
{
	/* Send MS OS Compatibility descriptor if requested by the host. */
	CheckIfMSCompatibilityDescriptorRequest();

	RNDIS_Device_ProcessControlRequest(&Ethernet_RNDIS_Interface_Device);
	MS_Device_ProcessControlRequest(&Disk_MS_Interface);
}

/** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
 *
 *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced
 */
bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
{
	bool CommandSuccess;

	LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
	CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
	LEDs_SetAllLEDs(LEDMASK_USB_READY);

	return CommandSuccess;
}