/* * Copyright (C) 2010-2014 NXP Semiconductors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * Transport Mapping Layer header files containing APIs related to initializing, * reading * and writing data into files provided by the driver interface. * * API listed here encompasses Transport Mapping Layer interfaces required to be * mapped * to different Interfaces and Platforms. * */ #ifndef PHTMLNFC_H #define PHTMLNFC_H #include /* * Message posted by Reader thread upon * completion of requested operation */ #define PH_TMLNFC_READ_MESSAGE (0xAA) /* * Message posted by Writer thread upon * completion of requested operation */ #define PH_TMLNFC_WRITE_MESSAGE (0x55) /* * Value indicates to reset device */ #define PH_TMLNFC_RESETDEVICE (0x00008001) /* ***************************Globals,Structure and Enumeration ****************** */ /* * Transaction (Tx/Rx) completion information structure of TML * * This structure holds the completion callback information of the * transaction passed from the TML layer to the Upper layer * along with the completion callback. * * The value of field wStatus can be interpreted as: * * - NFCSTATUS_SUCCESS Transaction performed * successfully. * - NFCSTATUS_FAILED Failed to wait on Read/Write * operation. * - NFCSTATUS_INSUFFICIENT_STORAGE Not enough memory to store data in * case of read. * - NFCSTATUS_BOARD_COMMUNICATION_ERROR Failure to Read/Write from the * file or timeout. */ typedef struct phTmlNfc_TransactInfo { NFCSTATUS wStatus; /* Status of the Transaction Completion*/ uint8_t* pBuff; /* Response Data of the Transaction*/ uint16_t wLength; /* Data size of the Transaction*/ } phTmlNfc_TransactInfo_t; /* Instance of Transaction structure */ /* * TML transreceive completion callback to Upper Layer * * pContext - Context provided by upper layer * pInfo - Transaction info. See phTmlNfc_TransactInfo */ typedef void (*pphTmlNfc_TransactCompletionCb_t)( void* pContext, phTmlNfc_TransactInfo_t* pInfo); /* * TML Deferred callback interface structure invoked by upper layer * * This could be used for read/write operations * * dwMsgPostedThread Message source identifier * pParams Parameters for the deferred call processing */ typedef void (*pphTmlNfc_DeferFuncPointer_t)(uint32_t dwMsgPostedThread, void* pParams); /* * Enum definition contains supported ioctl control codes. * * phTmlNfc_IoCtl */ typedef enum { phTmlNfc_e_Invalid = 0, phTmlNfc_e_ResetDevice = PH_TMLNFC_RESETDEVICE, /* Reset the device */ phTmlNfc_e_EnableDownloadMode, /* Do the hardware setting to enter into download mode */ phTmlNfc_e_EnableNormalMode /* Hardware setting for normal mode of operation */ } phTmlNfc_ControlCode_t; /* Control code for IOCTL call */ /* * Enable / Disable Re-Transmission of Packets * * phTmlNfc_ConfigNciPktReTx */ typedef enum { phTmlNfc_e_EnableRetrans = 0x00, /*Enable retransmission of Nci packet */ phTmlNfc_e_DisableRetrans = 0x01 /*Disable retransmission of Nci packet */ } phTmlNfc_ConfigRetrans_t; /* Configuration for Retransmission */ /* * Structure containing details related to read and write operations * */ typedef struct phTmlNfc_ReadWriteInfo { volatile uint8_t bEnable; /*This flag shall decide whether to perform Write/Read operation */ uint8_t bThreadBusy; /*Flag to indicate thread is busy on respective operation */ /* Transaction completion Callback function */ pphTmlNfc_TransactCompletionCb_t pThread_Callback; void* pContext; /*Context passed while invocation of operation */ uint8_t* pBuffer; /*Buffer passed while invocation of operation */ uint16_t wLength; /*Length of data read/written */ NFCSTATUS wWorkStatus; /*Status of the transaction performed */ } phTmlNfc_ReadWriteInfo_t; /* *Base Context Structure containing members required for entire session */ typedef struct phTmlNfc_Context { pthread_t readerThread; /*Handle to the thread which handles write and read operations */ pthread_t writerThread; volatile uint8_t bThreadDone; /*Flag to decide whether to run or abort the thread */ phTmlNfc_ConfigRetrans_t eConfig; /*Retransmission of Nci Packet during timeout */ uint8_t bRetryCount; /*Number of times retransmission shall happen */ uint8_t bWriteCbInvoked; /* Indicates whether write callback is invoked during retransmission */ uint32_t dwTimerId; /* Timer used to retransmit nci packet */ phTmlNfc_ReadWriteInfo_t tReadInfo; /*Pointer to Reader Thread Structure */ phTmlNfc_ReadWriteInfo_t tWriteInfo; /*Pointer to Writer Thread Structure */ void* pDevHandle; /* Pointer to Device Handle */ uintptr_t dwCallbackThreadId; /* Thread ID to which message to be posted */ uint8_t bEnableCrc; /*Flag to validate/not CRC for input buffer */ sem_t rxSemaphore; sem_t txSemaphore; /* Lock/Aquire txRx Semaphore */ sem_t postMsgSemaphore; /* Semaphore to post message atomically by Reader & writer thread */ } phTmlNfc_Context_t; /* * TML Configuration exposed to upper layer. */ typedef struct phTmlNfc_Config { /* Port name connected to PN54X * * Platform specific canonical device name to which PN54X is connected. * * e.g. On Linux based systems this would be /dev/PN54X */ int8_t* pDevName; /* Callback Thread ID * * This is the thread ID on which the Reader & Writer thread posts message. */ uintptr_t dwGetMsgThreadId; /* Communication speed between DH and PN54X * * This is the baudrate of the bus for communication between DH and PN54X */ uint32_t dwBaudRate; } phTmlNfc_Config_t, *pphTmlNfc_Config_t; /* pointer to phTmlNfc_Config_t */ /* * TML Deferred Callback structure used to invoke Upper layer Callback function. */ typedef struct { /* Deferred callback function to be invoked */ pphTmlNfc_DeferFuncPointer_t pDef_call; /* Source identifier * * Identifier of the source which posted the message */ uint32_t dwMsgPostedThread; /** Actual Message * * This is passed as a parameter passed to the deferred callback function * pDef_call. */ void* pParams; } phTmlNfc_DeferMsg_t; /* DeferMsg structure passed to User Thread */ typedef enum { I2C_FRAGMENATATION_DISABLED, /*i2c fragmentation_disabled */ I2C_FRAGMENTATION_ENABLED /*i2c_fragmentation_enabled */ } phTmlNfc_i2cfragmentation_t; /* Function declarations */ NFCSTATUS phTmlNfc_Init(pphTmlNfc_Config_t pConfig); NFCSTATUS phTmlNfc_Shutdown(void); NFCSTATUS phTmlNfc_Write(uint8_t* pBuffer, uint16_t wLength, pphTmlNfc_TransactCompletionCb_t pTmlWriteComplete, void* pContext); NFCSTATUS phTmlNfc_Read(uint8_t* pBuffer, uint16_t wLength, pphTmlNfc_TransactCompletionCb_t pTmlReadComplete, void* pContext); NFCSTATUS phTmlNfc_WriteAbort(void); NFCSTATUS phTmlNfc_ReadAbort(void); NFCSTATUS phTmlNfc_IoCtl(phTmlNfc_ControlCode_t eControlCode); void phTmlNfc_DeferredCall(uintptr_t dwThreadId, phLibNfc_Message_t* ptWorkerMsg); void phTmlNfc_ConfigNciPktReTx(phTmlNfc_ConfigRetrans_t eConfig, uint8_t bRetryCount); void phTmlNfc_set_fragmentation_enabled(phTmlNfc_i2cfragmentation_t enable); phTmlNfc_i2cfragmentation_t phTmlNfc_get_fragmentation_enabled(); #endif /* PHTMLNFC_H */