circuitpython/stmhal/cc3k/evnt_handler.c

/*****************************************************************************
*
*  evnt_handler.c  - CC3000 Host Driver Implementation.
*  Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*    Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
*    Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the
*    distribution.
*
*    Neither the name of Texas Instruments Incorporated nor the names of
*    its contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
*  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
*  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
*  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
*  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
*  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
//*****************************************************************************
//
//! \addtogroup evnt_handler_api
//! @{
//
//******************************************************************************

//******************************************************************************
//                  INCLUDE FILES
//******************************************************************************

#include <stdint.h>
#include "mpconfigport.h"

#if MICROPY_HW_ENABLE_CC3K

#include "cc3000_common.h"
#include "string.h"
#include "hci.h"
#include "evnt_handler.h"
#include "wlan.h"
#include "socket.h"
#include "netapp.h"
#include "ccspi.h"



//*****************************************************************************
//                  COMMON DEFINES
//*****************************************************************************

#define FLOW_CONTROL_EVENT_HANDLE_OFFSET		(0)
#define FLOW_CONTROL_EVENT_BLOCK_MODE_OFFSET	(1)
#define FLOW_CONTROL_EVENT_FREE_BUFFS_OFFSET	(2)
#define FLOW_CONTROL_EVENT_SIZE					(4)

#define BSD_RSP_PARAMS_SOCKET_OFFSET		(0)
#define BSD_RSP_PARAMS_STATUS_OFFSET		(4)

#define GET_HOST_BY_NAME_RETVAL_OFFSET	(0)
#define GET_HOST_BY_NAME_ADDR_OFFSET	(4)

#define ACCEPT_SD_OFFSET			(0)
#define ACCEPT_RETURN_STATUS_OFFSET	(4)
#define ACCEPT_ADDRESS__OFFSET		(8)

#define SL_RECEIVE_SD_OFFSET			(0)
#define SL_RECEIVE_NUM_BYTES_OFFSET		(4)
#define SL_RECEIVE__FLAGS__OFFSET		(8)


#define SELECT_STATUS_OFFSET			(0)
#define SELECT_READFD_OFFSET			(4)
#define SELECT_WRITEFD_OFFSET			(8)
#define SELECT_EXFD_OFFSET				(12)


#define NETAPP_IPCONFIG_IP_OFFSET				(0)
#define NETAPP_IPCONFIG_SUBNET_OFFSET			(4)
#define NETAPP_IPCONFIG_GW_OFFSET				(8)
#define NETAPP_IPCONFIG_DHCP_OFFSET				(12)
#define NETAPP_IPCONFIG_DNS_OFFSET				(16)
#define NETAPP_IPCONFIG_MAC_OFFSET				(20)
#define NETAPP_IPCONFIG_SSID_OFFSET				(26)

#define NETAPP_IPCONFIG_IP_LENGTH				(4)
#define NETAPP_IPCONFIG_MAC_LENGTH				(6)
#define NETAPP_IPCONFIG_SSID_LENGTH				(32)


#define NETAPP_PING_PACKETS_SENT_OFFSET			(0)
#define NETAPP_PING_PACKETS_RCVD_OFFSET			(4)
#define NETAPP_PING_MIN_RTT_OFFSET				(8)
#define NETAPP_PING_MAX_RTT_OFFSET				(12)
#define NETAPP_PING_AVG_RTT_OFFSET				(16)

#define GET_SCAN_RESULTS_TABlE_COUNT_OFFSET				(0)
#define GET_SCAN_RESULTS_SCANRESULT_STATUS_OFFSET		(4)
#define GET_SCAN_RESULTS_ISVALID_TO_SSIDLEN_OFFSET		(8)
#define GET_SCAN_RESULTS_FRAME_TIME_OFFSET				(10)
#define GET_SCAN_RESULTS_SSID_MAC_LENGTH				(38)



//*****************************************************************************
//                  GLOBAL VARAIABLES
//*****************************************************************************

unsigned long socket_active_status = SOCKET_STATUS_INIT_VAL;


//*****************************************************************************
//            Prototypes for the static functions
//*****************************************************************************

static long hci_event_unsol_flowcontrol_handler(char *pEvent);

static void update_socket_active_status(char *resp_params);


//*****************************************************************************
//
//!  hci_unsol_handle_patch_request
//!
//!  @param  event_hdr  event header
//!
//!  @return none
//!
//!  @brief   Handle unsolicited event from type patch request
//
//*****************************************************************************
void hci_unsol_handle_patch_request(char *event_hdr)
{
	char *params = (char *)(event_hdr) + HCI_EVENT_HEADER_SIZE;
	unsigned long ucLength = 0;
	char *patch;

	switch (*params)
	{
	case HCI_EVENT_PATCHES_DRV_REQ:

		if (tSLInformation.sDriverPatches)
		{
			patch = tSLInformation.sDriverPatches(&ucLength);

			if (patch)
			{
				hci_patch_send(HCI_EVENT_PATCHES_DRV_REQ,
											 tSLInformation.pucTxCommandBuffer, patch, ucLength);
				return;
			}
		}

		// Send 0 length Patches response event
		hci_patch_send(HCI_EVENT_PATCHES_DRV_REQ,
									 tSLInformation.pucTxCommandBuffer, 0, 0);
		break;

	case HCI_EVENT_PATCHES_FW_REQ:

		if (tSLInformation.sFWPatches)
		{
			patch = tSLInformation.sFWPatches(&ucLength);

			// Build and send a patch
			if (patch)
			{
				hci_patch_send(HCI_EVENT_PATCHES_FW_REQ,
											 tSLInformation.pucTxCommandBuffer, patch, ucLength);
				return;
			}
		}

		// Send 0 length Patches response event
		hci_patch_send(HCI_EVENT_PATCHES_FW_REQ,
									 tSLInformation.pucTxCommandBuffer, 0, 0);
		break;

	case HCI_EVENT_PATCHES_BOOTLOAD_REQ:

		if (tSLInformation.sBootLoaderPatches)
		{
			patch = tSLInformation.sBootLoaderPatches(&ucLength);

			if (patch)
			{
				hci_patch_send(HCI_EVENT_PATCHES_BOOTLOAD_REQ,
											 tSLInformation.pucTxCommandBuffer, patch, ucLength);
				return;
			}
		}

		// Send 0 length Patches response event
		hci_patch_send(HCI_EVENT_PATCHES_BOOTLOAD_REQ,
									 tSLInformation.pucTxCommandBuffer, 0, 0);
		break;
	}
}



//*****************************************************************************
//
//!  hci_event_handler
//!
//!  @param  pRetParams     incoming data buffer
//!  @param  from           from information (in case of data received)
//!  @param  fromlen        from information length (in case of data received)
//!
//!  @return         none
//!
//!  @brief          Parse the incoming events packets and issues corresponding
//!                  event handler from global array of handlers pointers
//
//*****************************************************************************


unsigned char *
hci_event_handler(void *pRetParams, unsigned char *from, unsigned char *fromlen)
{
	unsigned char *pucReceivedData, ucArgsize;
	unsigned short usLength;
	unsigned char *pucReceivedParams;
	unsigned short usReceivedEventOpcode = 0;
	unsigned long retValue32;
	unsigned char * RecvParams;
	unsigned char *RetParams;

	while (1)
	{
		if (tSLInformation.usEventOrDataReceived != 0)
		{
			pucReceivedData = (tSLInformation.pucReceivedData);

			if (*pucReceivedData == HCI_TYPE_EVNT)
			{
				// Event Received
				STREAM_TO_UINT16((char *)pucReceivedData, HCI_EVENT_OPCODE_OFFSET, usReceivedEventOpcode);
				pucReceivedParams = pucReceivedData + HCI_EVENT_HEADER_SIZE;
				RecvParams = pucReceivedParams;
				RetParams = pRetParams;

				// In case unsolicited event received - here the handling finished
				if (hci_unsol_event_handler((char *)pucReceivedData) == 0)
				{
					STREAM_TO_UINT8(pucReceivedData, HCI_DATA_LENGTH_OFFSET, usLength);

					switch(usReceivedEventOpcode)
					{
					case HCI_CMND_READ_BUFFER_SIZE:
						{
							STREAM_TO_UINT8((char *)pucReceivedParams, 0, tSLInformation.usNumberOfFreeBuffers);
							STREAM_TO_UINT16((char *)pucReceivedParams, 1, tSLInformation.usSlBufferLength);
						}
						break;

					case HCI_CMND_WLAN_CONFIGURE_PATCH:
					case HCI_NETAPP_DHCP:
					case HCI_NETAPP_PING_SEND:
					case HCI_NETAPP_PING_STOP:
					case HCI_NETAPP_ARP_FLUSH:
					case HCI_NETAPP_SET_DEBUG_LEVEL:
					case HCI_NETAPP_SET_TIMERS:
					case HCI_EVNT_NVMEM_READ:
					case HCI_EVNT_NVMEM_CREATE_ENTRY:
					case HCI_CMND_NVMEM_WRITE_PATCH:
					case HCI_NETAPP_PING_REPORT:
					case HCI_EVNT_MDNS_ADVERTISE:

						STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET ,*(unsigned char *)pRetParams);
						break;

					case HCI_CMND_SETSOCKOPT:
					case HCI_CMND_WLAN_CONNECT:
					case HCI_CMND_WLAN_IOCTL_STATUSGET:
					case HCI_EVNT_WLAN_IOCTL_ADD_PROFILE:
					case HCI_CMND_WLAN_IOCTL_DEL_PROFILE:
					case HCI_CMND_WLAN_IOCTL_SET_CONNECTION_POLICY:
					case HCI_CMND_WLAN_IOCTL_SET_SCANPARAM:
					case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_START:
					case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_STOP:
					case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_SET_PREFIX:
					case HCI_CMND_EVENT_MASK:
					case HCI_EVNT_WLAN_DISCONNECT:
					case HCI_EVNT_SOCKET:
					case HCI_EVNT_BIND:
					case HCI_CMND_LISTEN:
					case HCI_EVNT_CLOSE_SOCKET:
					case HCI_EVNT_CONNECT:
					case HCI_EVNT_NVMEM_WRITE:

						STREAM_TO_UINT32((char *)pucReceivedParams,0 ,*(unsigned long *)pRetParams);
						break;

					case HCI_EVNT_READ_SP_VERSION:

						STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET ,*(unsigned char *)pRetParams);
						pRetParams = ((char *)pRetParams) + 1;
						STREAM_TO_UINT32((char *)pucReceivedParams, 0, retValue32);
						UINT32_TO_STREAM((unsigned char *)pRetParams, retValue32);
						break;

					case HCI_EVNT_BSD_GETHOSTBYNAME:

						STREAM_TO_UINT32((char *)pucReceivedParams
						      ,GET_HOST_BY_NAME_RETVAL_OFFSET,*(unsigned long *)pRetParams);
						pRetParams = ((char *)pRetParams) + 4;
						STREAM_TO_UINT32((char *)pucReceivedParams
									,GET_HOST_BY_NAME_ADDR_OFFSET,*(unsigned long *)pRetParams);
						break;

					case HCI_EVNT_ACCEPT:
						{
							STREAM_TO_UINT32((char *)pucReceivedParams,ACCEPT_SD_OFFSET
															 ,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams
										,ACCEPT_RETURN_STATUS_OFFSET,*(unsigned long *)pRetParams);
              pRetParams = ((char *)pRetParams) + 4;

							//This argument returns in network order
							memcpy((unsigned char *)pRetParams,
								  pucReceivedParams + ACCEPT_ADDRESS__OFFSET, sizeof(sockaddr));
							break;
						}

					case HCI_EVNT_RECV:
					case HCI_EVNT_RECVFROM:
						{
							STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_SD_OFFSET ,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_NUM_BYTES_OFFSET,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE__FLAGS__OFFSET,*(unsigned long *)pRetParams);

							if(((tBsdReadReturnParams *)pRetParams)->iNumberOfBytes == ERROR_SOCKET_INACTIVE)
							{
								set_socket_active_status(((tBsdReadReturnParams *)pRetParams)->iSocketDescriptor,SOCKET_STATUS_INACTIVE);
							}
							break;
						}

                                        case HCI_EVNT_SEND:
					case HCI_EVNT_SENDTO:
						{
							STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_SD_OFFSET ,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_NUM_BYTES_OFFSET,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;

							break;
						}

					case HCI_EVNT_SELECT:
						{
							STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_STATUS_OFFSET,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_READFD_OFFSET,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_WRITEFD_OFFSET,*(unsigned long *)pRetParams);
							pRetParams = ((char *)pRetParams) + 4;
							STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_EXFD_OFFSET,*(unsigned long *)pRetParams);
							break;
						}

					case HCI_CMND_GETSOCKOPT:

						STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET,((tBsdGetSockOptReturnParams *)pRetParams)->iStatus);
						//This argument returns in network order
						memcpy((unsigned char *)pRetParams, pucReceivedParams, 4);
						break;

					case HCI_CMND_WLAN_IOCTL_GET_SCAN_RESULTS:

						STREAM_TO_UINT32((char *)pucReceivedParams,GET_SCAN_RESULTS_TABlE_COUNT_OFFSET,*(unsigned long *)pRetParams);
						pRetParams = ((char *)pRetParams) + 4;
						STREAM_TO_UINT32((char *)pucReceivedParams,GET_SCAN_RESULTS_SCANRESULT_STATUS_OFFSET,*(unsigned long *)pRetParams);
						pRetParams = ((char *)pRetParams) + 4;
						STREAM_TO_UINT16((char *)pucReceivedParams,GET_SCAN_RESULTS_ISVALID_TO_SSIDLEN_OFFSET,*(unsigned long *)pRetParams);
						pRetParams = ((char *)pRetParams) + 2;
						STREAM_TO_UINT16((char *)pucReceivedParams,GET_SCAN_RESULTS_FRAME_TIME_OFFSET,*(unsigned long *)pRetParams);
						pRetParams = ((char *)pRetParams) + 2;
						memcpy((unsigned char *)pRetParams, (char *)(pucReceivedParams + GET_SCAN_RESULTS_FRAME_TIME_OFFSET + 2), GET_SCAN_RESULTS_SSID_MAC_LENGTH);
						break;

					case HCI_CMND_SIMPLE_LINK_START:
						break;

					case HCI_NETAPP_IPCONFIG:

						//Read IP address
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
						RecvParams += 4;

						//Read subnet
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
						RecvParams += 4;

						//Read default GW
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
						RecvParams += 4;

						//Read DHCP server
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
						RecvParams += 4;

						//Read DNS server
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
						RecvParams += 4;

						//Read Mac address
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_MAC_LENGTH);
						RecvParams += 6;

						//Read SSID
						STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_SSID_LENGTH);
						break;
					}
				}

				if (usReceivedEventOpcode == tSLInformation.usRxEventOpcode)
				{
					tSLInformation.usRxEventOpcode = 0;
				}
			}
			else
			{
				pucReceivedParams = pucReceivedData;
				STREAM_TO_UINT8((char *)pucReceivedData, HCI_PACKET_ARGSIZE_OFFSET, ucArgsize);

				STREAM_TO_UINT16((char *)pucReceivedData, HCI_PACKET_LENGTH_OFFSET, usLength);

				// Data received: note that the only case where from and from length
				// are not null is in recv from, so fill the args accordingly
				if (from)
				{
					STREAM_TO_UINT32((char *)(pucReceivedData + HCI_DATA_HEADER_SIZE), BSD_RECV_FROM_FROMLEN_OFFSET, *(unsigned long *)fromlen);
					memcpy(from, (pucReceivedData + HCI_DATA_HEADER_SIZE + BSD_RECV_FROM_FROM_OFFSET) ,*fromlen);
				}

				memcpy(pRetParams, pucReceivedParams + HCI_DATA_HEADER_SIZE + ucArgsize,
							 usLength - ucArgsize);

				tSLInformation.usRxDataPending = 0;
			}

			tSLInformation.usEventOrDataReceived = 0;

			SpiResumeSpi();

			// Since we are going to TX - we need to handle this event after the
			// ResumeSPi since we need interrupts
			if ((*pucReceivedData == HCI_TYPE_EVNT) &&
					(usReceivedEventOpcode == HCI_EVNT_PATCHES_REQ))
			{
				hci_unsol_handle_patch_request((char *)pucReceivedData);
			}

			if ((tSLInformation.usRxEventOpcode == 0) && (tSLInformation.usRxDataPending == 0))
			{
				return NULL;
			}
		}
	}

}

//*****************************************************************************
//
//!  hci_unsol_event_handler
//!
//!  @param  event_hdr   event header
//!
//!  @return             1 if event supported and handled
//!                      0 if event is not supported
//!
//!  @brief              Handle unsolicited events
//
//*****************************************************************************
long
hci_unsol_event_handler(char *event_hdr)
{
	char * data = NULL;
	long event_type;
	unsigned long NumberOfReleasedPackets;
	unsigned long NumberOfSentPackets;

	STREAM_TO_UINT16(event_hdr, HCI_EVENT_OPCODE_OFFSET,event_type);

	if (event_type & HCI_EVNT_UNSOL_BASE)
	{
		switch(event_type)
		{

		case HCI_EVNT_DATA_UNSOL_FREE_BUFF:
			{
				hci_event_unsol_flowcontrol_handler(event_hdr);

				NumberOfReleasedPackets = tSLInformation.NumberOfReleasedPackets;
				NumberOfSentPackets = tSLInformation.NumberOfSentPackets;

				if (NumberOfReleasedPackets == NumberOfSentPackets)
				{
					if (tSLInformation.InformHostOnTxComplete)
					{
						tSLInformation.sWlanCB(HCI_EVENT_CC3000_CAN_SHUT_DOWN, NULL, 0);
					}
				}
				return 1;

			}
		}
	}

	if(event_type & HCI_EVNT_WLAN_UNSOL_BASE)
	{
		switch(event_type)
		{
		case HCI_EVNT_WLAN_KEEPALIVE:
		case HCI_EVNT_WLAN_UNSOL_CONNECT:
		case HCI_EVNT_WLAN_UNSOL_DISCONNECT:
		case HCI_EVNT_WLAN_UNSOL_INIT:
		case HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE:

			if( tSLInformation.sWlanCB )
			{
				tSLInformation.sWlanCB(event_type, 0, 0);
			}
			break;

		case HCI_EVNT_WLAN_UNSOL_DHCP:
			{
				unsigned char	params[NETAPP_IPCONFIG_MAC_OFFSET + 1];	// extra byte is for the status
				unsigned char *recParams = params;

				data = (char*)(event_hdr) + HCI_EVENT_HEADER_SIZE;

				//Read IP address
				STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
				data += 4;
				//Read subnet
				STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
				data += 4;
				//Read default GW
				STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
				data += 4;
				//Read DHCP server
				STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
				data += 4;
				//Read DNS server
				STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
				// read the status
				STREAM_TO_UINT8(event_hdr, HCI_EVENT_STATUS_OFFSET, *recParams);


				if( tSLInformation.sWlanCB )
				{
					tSLInformation.sWlanCB(event_type, (char *)params, sizeof(params));
				}
			}
			break;

		case HCI_EVNT_WLAN_ASYNC_PING_REPORT:
			{
				netapp_pingreport_args_t params;
				data = (char*)(event_hdr) + HCI_EVENT_HEADER_SIZE;
				STREAM_TO_UINT32(data, NETAPP_PING_PACKETS_SENT_OFFSET, params.packets_sent);
				STREAM_TO_UINT32(data, NETAPP_PING_PACKETS_RCVD_OFFSET, params.packets_received);
				STREAM_TO_UINT32(data, NETAPP_PING_MIN_RTT_OFFSET, params.min_round_time);
				STREAM_TO_UINT32(data, NETAPP_PING_MAX_RTT_OFFSET, params.max_round_time);
				STREAM_TO_UINT32(data, NETAPP_PING_AVG_RTT_OFFSET, params.avg_round_time);

				if( tSLInformation.sWlanCB )
				{
					tSLInformation.sWlanCB(event_type, (char *)&params, sizeof(params));
				}
			}
			break;
		case HCI_EVNT_BSD_TCP_CLOSE_WAIT:
			{
				data = (char *)(event_hdr) + HCI_EVENT_HEADER_SIZE;
				if( tSLInformation.sWlanCB )
				{
					//data[0] represents the socket id, for which FIN was received by remote.
					//Upon receiving this event, the user can close the socket, or else the
					//socket will be closded after inacvitity timeout (by default 60 seconds)
					tSLInformation.sWlanCB(event_type, data, 1);
				}
			}
			break;

		//'default' case which means "event not supported"
		default:
			return (0);
		}
		return(1);
	}

	if ((event_type == HCI_EVNT_SEND) || (event_type == HCI_EVNT_SENDTO)
			|| (event_type == HCI_EVNT_WRITE))
	{
                char *pArg;
                long status;

                pArg = M_BSD_RESP_PARAMS_OFFSET(event_hdr);
                STREAM_TO_UINT32(pArg, BSD_RSP_PARAMS_STATUS_OFFSET,status);

                if (ERROR_SOCKET_INACTIVE == status)
                {
                    // The only synchronous event that can come from SL device in form of
                    // command complete is "Command Complete" on data sent, in case SL device
                    // was unable to transmit
                    STREAM_TO_UINT8(event_hdr, HCI_EVENT_STATUS_OFFSET, tSLInformation.slTransmitDataError);
                    update_socket_active_status(M_BSD_RESP_PARAMS_OFFSET(event_hdr));

                    return (1);
                }
                else
                    return (0);
	}

	//handle a case where unsolicited event arrived, but was not handled by any of the cases above
	if ((event_type != tSLInformation.usRxEventOpcode) && (event_type != HCI_EVNT_PATCHES_REQ))
	{
		return(1);
	}

	return(0);
}

//*****************************************************************************
//
//!  hci_unsolicited_event_handler
//!
//!  @param None
//!
//!  @return         ESUCCESS if successful, EFAIL if an error occurred
//!
//!  @brief          Parse the incoming unsolicited event packets and issues
//!                  corresponding event handler.
//
//*****************************************************************************
long
hci_unsolicited_event_handler(void)
{
	unsigned long   res = 0;
	unsigned char *pucReceivedData;

	if (tSLInformation.usEventOrDataReceived != 0)
	{
		pucReceivedData = (tSLInformation.pucReceivedData);

		if (*pucReceivedData == HCI_TYPE_EVNT)
		{

			// In case unsolicited event received - here the handling finished
			if (hci_unsol_event_handler((char *)pucReceivedData) == 1)
			{

				// There was an unsolicited event received - we can release the buffer
				// and clean the event received
				tSLInformation.usEventOrDataReceived = 0;

				res = 1;
				SpiResumeSpi();
			}
		}
	}

	return res;
}

//*****************************************************************************
//
//!  set_socket_active_status
//!
//!  @param Sd
//!	 @param Status
//!  @return         none
//!
//!  @brief          Check if the socket ID and status are valid and set
//!                  accordingly  the global socket status
//
//*****************************************************************************
void set_socket_active_status(long Sd, long Status)
{
	if(M_IS_VALID_SD(Sd) && M_IS_VALID_STATUS(Status))
	{
		socket_active_status &= ~(1 << Sd);      /* clean socket's mask */
		socket_active_status |= (Status << Sd); /* set new socket's mask */
	}
}


//*****************************************************************************
//
//!  hci_event_unsol_flowcontrol_handler
//!
//!  @param  pEvent  pointer to the string contains parameters for IPERF
//!  @return         ESUCCESS if successful, EFAIL if an error occurred
//!
//!  @brief  Called in case unsolicited event from type
//!          HCI_EVNT_DATA_UNSOL_FREE_BUFF has received.
//!				   Keep track on the number of packets transmitted and update the
//!					 number of free buffer in the SL device.
//
//*****************************************************************************
long
hci_event_unsol_flowcontrol_handler(char *pEvent)
{

	long temp, value;
	unsigned short i;
	unsigned short  pusNumberOfHandles=0;
	char *pReadPayload;

	STREAM_TO_UINT16((char *)pEvent,HCI_EVENT_HEADER_SIZE,pusNumberOfHandles);
	pReadPayload = ((char *)pEvent +
									HCI_EVENT_HEADER_SIZE + sizeof(pusNumberOfHandles));
	temp = 0;

	for(i = 0; i < pusNumberOfHandles ; i++)
	{
		STREAM_TO_UINT16(pReadPayload, FLOW_CONTROL_EVENT_FREE_BUFFS_OFFSET, value);
		temp += value;
		pReadPayload += FLOW_CONTROL_EVENT_SIZE;
	}

	tSLInformation.usNumberOfFreeBuffers += temp;
	tSLInformation.NumberOfReleasedPackets += temp;

	return(ESUCCESS);
}

//*****************************************************************************
//
//!  get_socket_active_status
//!
//!  @param  Sd  Socket IS
//!  @return     Current status of the socket.
//!
//!  @brief  Retrieve socket status
//
//*****************************************************************************

long
get_socket_active_status(long Sd)
{
	if(M_IS_VALID_SD(Sd))
	{
		return (socket_active_status & (1 << Sd)) ? SOCKET_STATUS_INACTIVE : SOCKET_STATUS_ACTIVE;
	}
	return SOCKET_STATUS_INACTIVE;
}

//*****************************************************************************
//
//!  update_socket_active_status
//!
//!  @param  resp_params  Socket IS
//!  @return     Current status of the socket.
//!
//!  @brief  Retrieve socket status
//
//*****************************************************************************
void
update_socket_active_status(char *resp_params)
{
	long status, sd;

	STREAM_TO_UINT32(resp_params, BSD_RSP_PARAMS_SOCKET_OFFSET,sd);
	STREAM_TO_UINT32(resp_params, BSD_RSP_PARAMS_STATUS_OFFSET,status);

	if(ERROR_SOCKET_INACTIVE == status)
	{
		set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);
	}
}


//*****************************************************************************
//
//!  SimpleLinkWaitEvent
//!
//!  @param  usOpcode      command operation code
//!  @param  pRetParams    command return parameters
//!
//!  @return               none
//!
//!  @brief                Wait for event, pass it to the hci_event_handler and
//!                        update the event opcode in a global variable.
//
//*****************************************************************************

void
SimpleLinkWaitEvent(unsigned short usOpcode, void *pRetParams)
{
	// In the blocking implementation the control to caller will be returned only
	// after the end of current transaction
	tSLInformation.usRxEventOpcode = usOpcode;
	hci_event_handler(pRetParams, 0, 0);
}

//*****************************************************************************
//
//!  SimpleLinkWaitData
//!
//!  @param  pBuf       data buffer
//!  @param  from       from information
//!  @param  fromlen	from information length
//!
//!  @return               none
//!
//!  @brief                Wait for data, pass it to the hci_event_handler
//! 					   and update in a global variable that there is
//!						   data to read.
//
//*****************************************************************************

void
SimpleLinkWaitData(unsigned char *pBuf, unsigned char *from,
									 unsigned char *fromlen)
{
	// In the blocking implementation the control to caller will be returned only
	// after the end of current transaction, i.e. only after data will be received
	tSLInformation.usRxDataPending = 1;
	hci_event_handler(pBuf, from, fromlen);
}

//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************

#endif // MICROPY_HW_ENABLE_CC3K