| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| /** |
| * \file phDalNfc.c |
| * \brief DAL Implementation for linux |
| * |
| * Project: Trusted NFC Linux Lignt |
| * |
| * $Date: 07 aug 2009 |
| * $Author: Jonathan roux |
| * $Revision: 1.0 $ |
| * |
| */ |
| |
| #define _DAL_4_NFC_C |
| |
| #include <unistd.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #ifdef ANDROID |
| #include <linux/ipc.h> |
| #include <cutils/log.h> |
| #include <cutils/properties.h> // for property_get |
| #else |
| #include <sys/msg.h> |
| #endif |
| #include <semaphore.h> |
| #include <phDal4Nfc.h> |
| #include <phOsalNfc.h> |
| #include <phNfcStatus.h> |
| #include <phDal4Nfc_DeferredCall.h> |
| #include <phDal4Nfc_debug.h> |
| #include <phDal4Nfc_uart.h> |
| #include <phDal4Nfc_i2c.h> |
| #include <phDal4Nfc_link.h> |
| #include <phDal4Nfc_messageQueueLib.h> |
| |
| /*----------------------------------------------------------------------------------- |
| MISC DEFINITIONS |
| ------------------------------------------------------------------------------------*/ |
| #define DEFAULT_LINK_TYPE ENUM_DAL_LINK_TYPE_COM1 |
| |
| /*----------------------------------------------------------------------------------- |
| TYPES |
| ------------------------------------------------------------------------------------*/ |
| /*structure holds members related for both read and write operations*/ |
| typedef struct Dal_RdWr_st |
| { |
| /* Read members */ |
| pthread_t nReadThread; /* Read thread Hanlde */ |
| uint8_t * pReadBuffer; /* Read local buffer */ |
| int nNbOfBytesToRead; /* Number of bytes to read */ |
| int nNbOfBytesRead; /* Number of read bytes */ |
| char nReadBusy; /* Read state machine */ |
| char nReadThreadAlive; /* Read state machine */ |
| char nWaitingOnRead; /* Read state machine */ |
| |
| /* Read wait members */ |
| uint8_t * pReadWaitBuffer; /* Read wait local Buffer */ |
| int nNbOfBytesToReadWait; /* Number of bytes to read */ |
| int nNbOfBytesReadWait; /* Number of read bytes */ |
| char nReadWaitBusy; /* Read state machine */ |
| char nWaitingOnReadWait; /* Read state machine */ |
| char nCancelReadWait; /* Read state machine */ |
| |
| /* Write members */ |
| pthread_t nWriteThread; /* Write thread Hanlde */ |
| uint8_t * pWriteBuffer; /* Write local buffer */ |
| uint8_t * pTempWriteBuffer; /* Temp Write local buffer */ |
| int nNbOfBytesToWrite; /* Number of bytes to write */ |
| int nNbOfBytesWritten; /* Number of bytes written */ |
| char nWaitingOnWrite; /* Write state machine */ |
| char nWriteThreadAlive; /* Write state machine */ |
| char nWriteBusy; /* Write state machine */ |
| } phDal4Nfc_RdWr_t; |
| |
| typedef void (*pphDal4Nfc_DeferFuncPointer_t) (void * ); |
| typedef void * (*pphDal4Nfc_thread_handler_t) (void * pParam); |
| |
| |
| /*----------------------------------------------------------------------------------- |
| VARIABLES |
| ------------------------------------------------------------------------------------*/ |
| static phDal4Nfc_RdWr_t gReadWriteContext; |
| static phDal4Nfc_SContext_t gDalContext; |
| static pphDal4Nfc_SContext_t pgDalContext; |
| static phHal_sHwReference_t * pgDalHwContext; |
| static sem_t nfc_read_sem; |
| static int low_level_traces; |
| #ifdef USE_MQ_MESSAGE_QUEUE |
| static phDal4Nfc_DeferredCall_Msg_t nDeferedMessage; |
| static mqd_t nDeferedCallMessageQueueId; |
| |
| #else |
| int nDeferedCallMessageQueueId = 0; |
| #endif |
| static phDal4Nfc_link_cbk_interface_t gLinkFunc; |
| /*----------------------------------------------------------------------------------- |
| PROTOTYPES |
| ------------------------------------------------------------------------------------*/ |
| static void phDal4Nfc_DeferredCb (void *params); |
| static NFCSTATUS phDal4Nfc_StartThreads (void); |
| static void phDal4Nfc_FillMsg (phDal4Nfc_Message_t *pDalMsg, phOsalNfc_Message_t *pOsalMsg); |
| |
| /*----------------------------------------------------------------------------------- |
| DAL API IMPLEMENTATION |
| ------------------------------------------------------------------------------------*/ |
| |
| static void refresh_low_level_traces() { |
| #ifdef LOW_LEVEL_TRACES |
| low_level_traces = 1; |
| return; |
| #else |
| |
| #ifdef ANDROID |
| char value[PROPERTY_VALUE_MAX]; |
| |
| property_get("ro.debuggable", value, ""); |
| if (!value[0] || !atoi(value)) { |
| low_level_traces = 0; // user build, do not allow debug |
| return; |
| } |
| |
| property_get("debug.nfc.LOW_LEVEL_TRACES", value, ""); |
| if (value[0]) { |
| low_level_traces = atoi(value) ? 1 : 0; |
| return; |
| } |
| #endif |
| low_level_traces = 0; |
| #endif |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Register |
| |
| PURPOSE: DAL register function. |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Register( phNfcIF_sReference_t *psRefer, |
| phNfcIF_sCallBack_t if_cb, void *psIFConf ) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| |
| if ((NULL != psRefer) && |
| (NULL != psRefer->plower_if) && |
| (NULL != if_cb.receive_complete) && |
| (NULL != if_cb.send_complete) |
| ) |
| { |
| /* Register the LLC functions to the upper layer */ |
| psRefer->plower_if->init = phDal4Nfc_Init; |
| psRefer->plower_if->release = phDal4Nfc_Shutdown; |
| psRefer->plower_if->send = phDal4Nfc_Write; |
| psRefer->plower_if->receive = phDal4Nfc_Read; |
| psRefer->plower_if->receive_wait = phDal4Nfc_ReadWait; |
| psRefer->plower_if->transact_abort = phDal4Nfc_ReadWaitCancel; |
| psRefer->plower_if->unregister = phDal4Nfc_Unregister; |
| |
| |
| if (NULL != pgDalContext) |
| { |
| /* Copy the DAL context to the upper layer */ |
| psRefer->plower_if->pcontext = pgDalContext; |
| /* Register the callback function from the upper layer */ |
| pgDalContext->cb_if.receive_complete = if_cb.receive_complete; |
| pgDalContext->cb_if.send_complete = if_cb.send_complete; |
| pgDalContext->cb_if.notify = if_cb.notify; |
| /* Get the upper layer context */ |
| pgDalContext->cb_if.pif_ctxt = if_cb.pif_ctxt; |
| /* Update the error state */ |
| result = NFCSTATUS_SUCCESS; |
| } |
| else |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_NOT_INITIALISED); |
| } |
| } |
| else /*Input parameters invalid*/ |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_PARAMETER); |
| } |
| return result; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Unregister |
| |
| PURPOSE: DAL unregister function. |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Unregister(void *pContext, void *pHwRef ) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| |
| if ((NULL == pContext) && (NULL == pHwRef)) |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_PARAMETER); |
| } |
| else |
| { |
| if (NULL != pgDalContext) |
| { |
| /* Register the callback function from the upper layer */ |
| pgDalContext->cb_if.receive_complete = NULL; |
| pgDalContext->cb_if.send_complete = NULL ; |
| pgDalContext->cb_if.notify = NULL ; |
| /* Get the upper layer context */ |
| pgDalContext->cb_if.pif_ctxt = NULL ; |
| |
| } |
| else |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_NOT_INITIALISED); |
| } |
| } |
| return result; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Init |
| |
| PURPOSE: DAL Init function. |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Init(void *pContext, void *pHwRef ) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| |
| refresh_low_level_traces(); |
| |
| if ((NULL != pContext) && (NULL != pHwRef)) |
| { |
| pContext = pgDalContext; |
| pgDalHwContext = (phHal_sHwReference_t *)pHwRef; |
| |
| if ( gDalContext.hw_valid == TRUE ) |
| { |
| /* The link has been opened from the application interface */ |
| gLinkFunc.open_from_handle(pgDalHwContext); |
| |
| if (!gLinkFunc.is_opened()) |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE); |
| } |
| else |
| { |
| /* Clear link buffers */ |
| gLinkFunc.flush(); |
| } |
| } |
| else |
| { |
| static phDal4Nfc_sConfig_t hw_config; |
| hw_config.nLinkType = DEFAULT_LINK_TYPE; |
| result = phDal4Nfc_Config(&hw_config, pHwRef ); |
| } |
| } |
| else /*Input parametrs invalid*/ |
| { |
| result = NFCSTATUS_INVALID_PARAMETER; |
| } |
| |
| return result; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Shutdown |
| |
| PURPOSE: DAL Shutdown function. |
| |
| -----------------------------------------------------------------------------*/ |
| |
| NFCSTATUS phDal4Nfc_Shutdown( void *pContext, void *pHwRef) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| void * pThreadReturn; |
| |
| // if (pContext == NULL) |
| // return NFCSTATUS_INVALID_PARAMETER; |
| |
| if (gDalContext.hw_valid == TRUE) |
| { |
| /* Flush the link */ |
| gLinkFunc.flush(); |
| |
| /* Close the message queue */ |
| #ifdef USE_MQ_MESSAGE_QUEUE |
| mq_close(nDeferedCallMessageQueueId); |
| #endif |
| |
| } |
| |
| return result; |
| } |
| |
| NFCSTATUS phDal4Nfc_ConfigRelease( void *pHwRef) |
| { |
| |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| void * pThreadReturn; |
| |
| DAL_PRINT("phDal4Nfc_ConfigRelease "); |
| |
| if (gDalContext.hw_valid == TRUE) |
| { |
| DAL_PRINT("Release Read Semaphore"); |
| sem_post(&nfc_read_sem); |
| |
| /* Kill the read and write threads */ |
| DAL_PRINT("Stop Reader Thread"); |
| gReadWriteContext.nReadThreadAlive = 0; |
| gReadWriteContext.nWriteThreadAlive = 0; |
| |
| if (pthread_join(gReadWriteContext.nReadThread, &pThreadReturn) != 0) |
| { |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_FAILED); |
| DAL_PRINT("phDal4Nfc_ConfigRelease KO"); |
| } |
| |
| /* Close the message queue */ |
| #ifdef USE_MQ_MESSAGE_QUEUE |
| mq_close(nDeferedCallMessageQueueId); |
| #endif |
| |
| /* Shutdown NFC Chip */ |
| phDal4Nfc_Reset(0); |
| |
| /* Close the link */ |
| gLinkFunc.close(); |
| |
| /* Reset the Read Writer context to NULL */ |
| memset((void *)&gReadWriteContext,0,sizeof(gReadWriteContext)); |
| /* Reset the DAL context values to NULL */ |
| memset((void *)&gDalContext,0,sizeof(gDalContext)); |
| } |
| |
| gDalContext.hw_valid = FALSE; |
| |
| DAL_DEBUG("phDal4Nfc_ConfigRelease(): %04x\n", result); |
| |
| |
| return result; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Write |
| |
| PURPOSE: DAL Write function. |
| |
| -----------------------------------------------------------------------------*/ |
| |
| NFCSTATUS phDal4Nfc_Write( void *pContext, void *pHwRef,uint8_t *pBuffer, uint16_t length) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| static int MsgType= PHDAL4NFC_WRITE_MESSAGE; |
| int * pmsgType=&MsgType; |
| phDal4Nfc_Message_t sMsg; |
| phOsalNfc_Message_t OsalMsg; |
| |
| if ((NULL != pContext) && (NULL != pHwRef)&& |
| (NULL != pBuffer) && (0 != length)) |
| { |
| if( gDalContext.hw_valid== TRUE) |
| { |
| if((!gReadWriteContext.nWriteBusy)&& |
| (!gReadWriteContext.nWaitingOnWrite)) |
| { |
| DAL_PRINT("phDal4Nfc_Write() : Temporary buffer !! \n"); |
| gReadWriteContext.pTempWriteBuffer = (uint8_t*)malloc(length * sizeof(uint8_t)); |
| /* Make a copy of the passed arguments */ |
| memcpy(gReadWriteContext.pTempWriteBuffer,pBuffer,length); |
| DAL_DEBUG("phDal4Nfc_Write(): %d\n", length); |
| gReadWriteContext.pWriteBuffer = gReadWriteContext.pTempWriteBuffer; |
| gReadWriteContext.nNbOfBytesToWrite = length; |
| /* Change the write state so that thread can take over the write */ |
| gReadWriteContext.nWriteBusy = TRUE; |
| /* Just set variable here. This is the trigger for the Write thread */ |
| gReadWriteContext.nWaitingOnWrite = TRUE; |
| /* Update the error state */ |
| result = NFCSTATUS_PENDING; |
| /* Send Message and perform physical write in the DefferedCallback */ |
| /* read completed immediately */ |
| sMsg.eMsgType= PHDAL4NFC_WRITE_MESSAGE; |
| /* Update the state */ |
| phDal4Nfc_FillMsg(&sMsg,&OsalMsg); |
| phDal4Nfc_DeferredCall((pphDal4Nfc_DeferFuncPointer_t)phDal4Nfc_DeferredCb,(void *)pmsgType); |
| memset(&sMsg,0,sizeof(phDal4Nfc_Message_t)); |
| memset(&OsalMsg,0,sizeof(phOsalNfc_Message_t)); |
| } |
| else |
| { |
| /* Driver is BUSY with previous Write */ |
| DAL_PRINT("phDal4Nfc_Write() : Busy \n"); |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_BUSY) ; |
| } |
| } |
| else |
| { |
| /* TBD :Additional error code : NOT_INITIALISED */ |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE); |
| } |
| |
| }/*end if-Input parametrs valid-check*/ |
| else |
| { |
| result = NFCSTATUS_INVALID_PARAMETER; |
| } |
| return result; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Read |
| |
| PURPOSE: DAL Read function. |
| |
| -----------------------------------------------------------------------------*/ |
| |
| NFCSTATUS phDal4Nfc_Read( void *pContext, void *pHwRef,uint8_t *pBuffer, uint16_t length) |
| { |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| |
| if ((NULL != pContext) && (NULL != pHwRef)&& |
| (NULL != pBuffer) && (0 != length)) |
| { |
| if ( gDalContext.hw_valid== TRUE) |
| { |
| if((!gReadWriteContext.nReadBusy)&& |
| (!gReadWriteContext.nWaitingOnRead)) |
| { |
| DAL_DEBUG("*****DAl Read called length : %d\n", length); |
| |
| /* Make a copy of the passed arguments */ |
| gReadWriteContext.pReadBuffer = pBuffer; |
| gReadWriteContext.nNbOfBytesToRead = length; |
| /* Change the Read state so that thread can take over the read */ |
| gReadWriteContext.nReadBusy = TRUE; |
| /* Just set variable here. This is the trigger for the Reader thread */ |
| gReadWriteContext.nWaitingOnRead = TRUE; |
| /* Update the return state */ |
| result = NFCSTATUS_PENDING; |
| /* unlock reader thread */ |
| sem_post(&nfc_read_sem); |
| } |
| else |
| { |
| /* Driver is BUSY with prev Read */ |
| DAL_PRINT("DAL BUSY\n"); |
| /* Make a copy of the passed arguments */ |
| gReadWriteContext.pReadBuffer = pBuffer; |
| gReadWriteContext.nNbOfBytesToRead = length; |
| result = NFCSTATUS_PENDING; |
| } |
| } |
| else |
| { |
| /* TBD :Additional error code : NOT_INITIALISED */ |
| result = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE); |
| } |
| }/*end if-Input parametrs valid-check*/ |
| else |
| { |
| result = NFCSTATUS_INVALID_PARAMETER; |
| } |
| DAL_DEBUG("*****DAl Read called result : %x\n", result); |
| return result; |
| } |
| |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_ReadWait |
| |
| PURPOSE: DAL Read wait function. |
| |
| -----------------------------------------------------------------------------*/ |
| |
| NFCSTATUS phDal4Nfc_ReadWait(void *pContext, void *pHwRef,uint8_t *pBuffer, uint16_t length) |
| { |
| /* not used */ |
| DAL_PRINT("phDal4Nfc_ReadWait"); |
| return 0; |
| } |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_ReadWaitCancel |
| |
| PURPOSE: Cancel the Read wait function. |
| |
| -----------------------------------------------------------------------------*/ |
| |
| NFCSTATUS phDal4Nfc_ReadWaitCancel( void *pContext, void *pHwRef) |
| { |
| DAL_PRINT("phDal4Nfc_ReadWaitCancel"); |
| |
| /* unlock read semaphore */ |
| sem_post(&nfc_read_sem); |
| |
| return 0; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Config |
| |
| PURPOSE: Configure the serial port. |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Config(pphDal4Nfc_sConfig_t config,void **phwref) |
| { |
| NFCSTATUS retstatus = NFCSTATUS_SUCCESS; |
| |
| DAL_PRINT("phDal4Nfc_Config"); |
| |
| if ((config == NULL) || (phwref == NULL) || (config->nClientId == -1)) |
| return NFCSTATUS_INVALID_PARAMETER; |
| |
| /* Register the link callbacks */ |
| memset(&gLinkFunc, 0, sizeof(phDal4Nfc_link_cbk_interface_t)); |
| switch(config->nLinkType) |
| { |
| case ENUM_DAL_LINK_TYPE_COM1: |
| case ENUM_DAL_LINK_TYPE_COM2: |
| case ENUM_DAL_LINK_TYPE_COM3: |
| case ENUM_DAL_LINK_TYPE_COM4: |
| case ENUM_DAL_LINK_TYPE_COM5: |
| case ENUM_DAL_LINK_TYPE_USB: |
| { |
| DAL_PRINT("UART link Config"); |
| /* Uart link interface */ |
| gLinkFunc.init = phDal4Nfc_uart_initialize; |
| gLinkFunc.open_from_handle = phDal4Nfc_uart_set_open_from_handle; |
| gLinkFunc.is_opened = phDal4Nfc_uart_is_opened; |
| gLinkFunc.flush = phDal4Nfc_uart_flush; |
| gLinkFunc.close = phDal4Nfc_uart_close; |
| gLinkFunc.open_and_configure = phDal4Nfc_uart_open_and_configure; |
| gLinkFunc.read = phDal4Nfc_uart_read; |
| gLinkFunc.write = phDal4Nfc_uart_write; |
| gLinkFunc.reset = phDal4Nfc_uart_reset; |
| } |
| break; |
| |
| case ENUM_DAL_LINK_TYPE_I2C: |
| { |
| DAL_PRINT("I2C link Config"); |
| /* i2c link interface */ |
| gLinkFunc.init = phDal4Nfc_i2c_initialize; |
| gLinkFunc.open_from_handle = phDal4Nfc_i2c_set_open_from_handle; |
| gLinkFunc.is_opened = phDal4Nfc_i2c_is_opened; |
| gLinkFunc.flush = phDal4Nfc_i2c_flush; |
| gLinkFunc.close = phDal4Nfc_i2c_close; |
| gLinkFunc.open_and_configure = phDal4Nfc_i2c_open_and_configure; |
| gLinkFunc.read = phDal4Nfc_i2c_read; |
| gLinkFunc.write = phDal4Nfc_i2c_write; |
| gLinkFunc.reset = phDal4Nfc_i2c_reset; |
| break; |
| } |
| |
| default: |
| { |
| /* Shound not happen : Bad parameter */ |
| return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_PARAMETER); |
| } |
| } |
| |
| gLinkFunc.init(); /* So that link interface can initialize its internal state */ |
| retstatus = gLinkFunc.open_and_configure(config, phwref); |
| if (retstatus != NFCSTATUS_SUCCESS) |
| return retstatus; |
| |
| /* Iniatilize the DAL context */ |
| (void)memset(&gDalContext,0,sizeof(phDal4Nfc_SContext_t)); |
| pgDalContext = &gDalContext; |
| |
| /* Reset the Reader Thread values to NULL */ |
| memset((void *)&gReadWriteContext,0,sizeof(gReadWriteContext)); |
| gReadWriteContext.nReadThreadAlive = TRUE; |
| gReadWriteContext.nWriteBusy = FALSE; |
| gReadWriteContext.nWaitingOnWrite = FALSE; |
| |
| /* Prepare the message queue for the defered calls */ |
| #ifdef USE_MQ_MESSAGE_QUEUE |
| nDeferedCallMessageQueueId = mq_open(MQ_NAME_IDENTIFIER, O_CREAT|O_RDWR, 0666, &MQ_QUEUE_ATTRIBUTES); |
| #else |
| nDeferedCallMessageQueueId = config->nClientId; |
| #endif |
| /* Start Read and Write Threads */ |
| if(NFCSTATUS_SUCCESS != phDal4Nfc_StartThreads()) |
| { |
| return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_FAILED); |
| } |
| |
| gDalContext.hw_valid = TRUE; |
| |
| phDal4Nfc_Reset(0); |
| phDal4Nfc_Reset(1); |
| |
| return NFCSTATUS_SUCCESS; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Reset |
| |
| PURPOSE: Reset the PN544, using the VEN pin |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Reset(long level) |
| { |
| NFCSTATUS retstatus = NFCSTATUS_SUCCESS; |
| |
| DAL_DEBUG("phDal4Nfc_Reset: VEN to %ld",level); |
| |
| retstatus = gLinkFunc.reset(level); |
| |
| return retstatus; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| |
| FUNCTION: phDal4Nfc_Download |
| |
| PURPOSE: Put the PN544 in download mode, using the GPIO4 pin |
| |
| -----------------------------------------------------------------------------*/ |
| NFCSTATUS phDal4Nfc_Download() |
| { |
| NFCSTATUS retstatus = NFCSTATUS_SUCCESS; |
| |
| DAL_DEBUG("phDal4Nfc_Download: GPIO4 to %d",1); |
| |
| usleep(10000); |
| retstatus = phDal4Nfc_Reset(2); |
| |
| return retstatus; |
| } |
| |
| |
| |
| /*----------------------------------------------------------------------------------- |
| DAL INTERNAL IMPLEMENTATION |
| ------------------------------------------------------------------------------------*/ |
| |
| |
| |
| /** |
| * \ingroup grp_nfc_dal |
| * |
| * \brief DAL Reader thread handler |
| * This function manages the reads from the link interface. The reads are done from |
| * this thread to create the asynchronous mecanism. When calling the synchronous |
| * function phDal4Nfc_Read, the nWaitingOnRead mutex is unlocked and the read |
| * can be done. Then a client callback is called to send the result. |
| * |
| * \param[in] pArg A custom argument that can be passed to the thread (not used) |
| * |
| * \retval TRUE Thread exiting. |
| */ |
| |
| int phDal4Nfc_ReaderThread(void * pArg) |
| { |
| char retvalue; |
| NFCSTATUS result = NFCSTATUS_SUCCESS; |
| uint8_t retry_cnt=0; |
| void * memsetRet; |
| |
| static int MsgType= PHDAL4NFC_READ_MESSAGE; |
| int * pmsgType=&MsgType; |
| |
| phDal4Nfc_Message_t sMsg; |
| phOsalNfc_Message_t OsalMsg ; |
| int i; |
| int i2c_error_count; |
| |
| pthread_setname_np(pthread_self(), "reader"); |
| |
| /* Create the overlapped event. Must be closed before exiting |
| to avoid a handle leak. This event is used READ API and the Reader thread*/ |
| |
| DAL_PRINT("RX Thread \n"); |
| DAL_DEBUG("\nRX Thread nReadThreadAlive = %d",gReadWriteContext.nReadThreadAlive); |
| DAL_DEBUG("\nRX Thread nWaitingOnRead = %d",gReadWriteContext.nWaitingOnRead); |
| while(gReadWriteContext.nReadThreadAlive) /* Thread Loop */ |
| { |
| /* Check for the read request from user */ |
| DAL_PRINT("RX Thread Sem Lock\n"); |
| sem_wait(&nfc_read_sem); |
| DAL_PRINT("RX Thread Sem UnLock\n"); |
| /* Issue read operation.*/ |
| |
| i2c_error_count = 0; |
| retry: |
| gReadWriteContext.nNbOfBytesRead=0; |
| DAL_DEBUG("\n*New *** *****Request Length = %d",gReadWriteContext.nNbOfBytesToRead); |
| memsetRet=memset(gReadWriteContext.pReadBuffer,0,gReadWriteContext.nNbOfBytesToRead); |
| |
| /* Wait for IRQ !!! */ |
| gReadWriteContext.nNbOfBytesRead = gLinkFunc.read(gReadWriteContext.pReadBuffer, gReadWriteContext.nNbOfBytesToRead); |
| |
| /* TODO: Remove this hack |
| * Reading the value 0x57 indicates a HW I2C error at I2C address 0x57 |
| * (pn544). There should not be false positives because a read of length 1 |
| * must be a HCI length read, and a length of 0x57 is impossible (max is 33). |
| */ |
| if(gReadWriteContext.nNbOfBytesToRead == 1 && gReadWriteContext.pReadBuffer[0] == 0x57) |
| { |
| i2c_error_count++; |
| LOGW("Read 0x57 %d times\n", i2c_error_count); |
| if (i2c_error_count < 5) { |
| usleep(2000); |
| goto retry; |
| } |
| DAL_PRINT("NOTHING TO READ, RECOVER"); |
| phOsalNfc_RaiseException(phOsalNfc_e_UnrecovFirmwareErr,1); |
| } |
| else |
| { |
| i2c_error_count = 0; |
| |
| if (low_level_traces) |
| { |
| phOsalNfc_PrintData("RECV", (uint16_t)gReadWriteContext.nNbOfBytesRead, gReadWriteContext.pReadBuffer); |
| } |
| DAL_DEBUG("Read ok. nbToRead=%d\n", gReadWriteContext.nNbOfBytesToRead); |
| DAL_DEBUG("NbReallyRead=%d\n", gReadWriteContext.nNbOfBytesRead); |
| /* DAL_PRINT("ReadBuff[]={ "); |
| for (i = 0; i < gReadWriteContext.nNbOfBytesRead; i++) |
| { |
| DAL_DEBUG("0x%x ", gReadWriteContext.pReadBuffer[i]); |
| } |
| DAL_PRINT("}\n"); */ |
| |
| /* read completed immediately */ |
| sMsg.eMsgType= PHDAL4NFC_READ_MESSAGE; |
| /* Update the state */ |
| phDal4Nfc_FillMsg(&sMsg,&OsalMsg); |
| phDal4Nfc_DeferredCall((pphDal4Nfc_DeferFuncPointer_t)phDal4Nfc_DeferredCb,(void *)pmsgType); |
| memsetRet=memset(&sMsg,0,sizeof(phDal4Nfc_Message_t)); |
| memsetRet=memset(&OsalMsg,0,sizeof(phOsalNfc_Message_t)); |
| } |
| |
| } /* End of thread Loop*/ |
| return TRUE; |
| } |
| |
| |
| |
| /** |
| * \ingroup grp_nfc_dal |
| * |
| * \brief DAL Start threads function |
| * This function is called from phDal4Nfc_Config and is responsible of creating the |
| * reader thread. |
| * |
| * \retval NFCSTATUS_SUCCESS If success. |
| * \retval NFCSTATUS_FAILED Can not create thread or retreive its attributes |
| */ |
| NFCSTATUS phDal4Nfc_StartThreads(void) |
| { |
| pthread_attr_t nReadThreadAttributes; |
| pthread_attr_t nWriteThreadAttributes; |
| int ret; |
| |
| if(sem_init(&nfc_read_sem, 0, 0) == -1) |
| { |
| DAL_PRINT("NFC Init Semaphore creation Error"); |
| return -1; |
| } |
| |
| ret = pthread_create(&gReadWriteContext.nReadThread, NULL, (pphDal4Nfc_thread_handler_t)phDal4Nfc_ReaderThread, (void*) "dal_read_thread"); |
| if(ret != 0) |
| return(PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_FAILED)); |
| |
| return NFCSTATUS_SUCCESS; |
| } |
| |
| /** |
| * \ingroup grp_nfc_dal |
| * |
| * \brief DAL fill message function |
| * Internal messages management. This function fills message structure |
| * depending on message types. |
| * |
| * \param[in, out] pDalMsg DAL message to fill |
| * \param[in, out] pOsalMsg OSAL message to fill |
| * |
| */ |
| void phDal4Nfc_FillMsg(phDal4Nfc_Message_t *pDalMsg,phOsalNfc_Message_t *pOsalMsg) |
| { |
| if(NULL != pgDalHwContext) |
| { |
| if(pDalMsg->eMsgType == PHDAL4NFC_WRITE_MESSAGE) |
| { |
| pDalMsg->transactInfo.length = (uint8_t)gReadWriteContext.nNbOfBytesWritten; |
| pDalMsg->transactInfo.buffer = NULL; |
| pDalMsg->transactInfo.status = NFCSTATUS_SUCCESS; |
| pDalMsg->pHwRef = pgDalHwContext; |
| pDalMsg->writeCbPtr = pgDalContext->cb_if.send_complete; |
| pOsalMsg->eMsgType = PH_DAL4NFC_MESSAGE_BASE; |
| pOsalMsg->pMsgData = pDalMsg; |
| return; |
| } |
| else if(pDalMsg->eMsgType == PHDAL4NFC_READ_MESSAGE) |
| { |
| pDalMsg->transactInfo.length = (uint8_t)gReadWriteContext.nNbOfBytesRead; |
| pDalMsg->transactInfo.buffer = gReadWriteContext.pReadBuffer; |
| pDalMsg->pContext= pgDalContext->cb_if.pif_ctxt; |
| } |
| else |
| { |
| pDalMsg->transactInfo.length = (uint8_t)gReadWriteContext.nNbOfBytesReadWait; |
| pDalMsg->transactInfo.buffer = gReadWriteContext.pReadWaitBuffer; |
| pDalMsg->pContext= pgDalContext; |
| } |
| pDalMsg->transactInfo.status = NFCSTATUS_SUCCESS; |
| pDalMsg->pHwRef = pgDalHwContext; |
| pDalMsg->readCbPtr = pgDalContext->cb_if.receive_complete; |
| /*map to OSAL msg format*/ |
| pOsalMsg->eMsgType = PH_DAL4NFC_MESSAGE_BASE; |
| pOsalMsg->pMsgData = pDalMsg; |
| } |
| |
| } |
| |
| /** |
| * \ingroup grp_nfc_dal |
| * |
| * \brief DAL deferred callback function |
| * Generic handler function called by a client thread when reading a message from the queue. |
| * Will function will directly call the client function (same context). See phDal4Nfc_DeferredCall |
| * |
| * \param[in] params Parameter that will be passed to the client function. |
| * |
| */ |
| void phDal4Nfc_DeferredCb (void *params) |
| { |
| int* pParam=NULL; |
| int i; |
| phNfc_sTransactionInfo_t TransactionInfo; |
| |
| pParam=(int*)params; |
| |
| switch(*pParam) |
| { |
| case PHDAL4NFC_READ_MESSAGE: |
| DAL_PRINT(" Dal deferred read called \n"); |
| TransactionInfo.buffer=gReadWriteContext.pReadBuffer; |
| TransactionInfo.length=(uint16_t)gReadWriteContext.nNbOfBytesRead; |
| TransactionInfo.status=NFCSTATUS_SUCCESS; |
| gReadWriteContext.nReadBusy = FALSE; |
| |
| |
| /* Reset flag so that another opertion can be issued.*/ |
| gReadWriteContext.nWaitingOnRead = FALSE; |
| if ((NULL != pgDalContext) && (NULL != pgDalContext->cb_if.receive_complete)) |
| { |
| pgDalContext->cb_if.receive_complete(pgDalContext->cb_if.pif_ctxt, |
| pgDalHwContext,&TransactionInfo); |
| } |
| |
| break; |
| case PHDAL4NFC_WRITE_MESSAGE: |
| DAL_PRINT(" Dal deferred write called \n"); |
| |
| if(low_level_traces) |
| { |
| phOsalNfc_PrintData("SEND", (uint16_t)gReadWriteContext.nNbOfBytesToWrite, gReadWriteContext.pWriteBuffer); |
| } |
| |
| /* DAL_DEBUG("dalMsg->transactInfo.length : %d\n", dalMsg->transactInfo.length); */ |
| /* Make a Physical WRITE */ |
| /* NOTE: need to usleep(3000) here if the write is for SWP */ |
| usleep(500); /* NXP advise 500us sleep required between I2C writes */ |
| gReadWriteContext.nNbOfBytesWritten = gLinkFunc.write(gReadWriteContext.pWriteBuffer, gReadWriteContext.nNbOfBytesToWrite); |
| if (gReadWriteContext.nNbOfBytesWritten != gReadWriteContext.nNbOfBytesToWrite) |
| { |
| /* controller may be in standby. do it again! */ |
| usleep(10000); /* wait 10 ms */ |
| gReadWriteContext.nNbOfBytesWritten = gLinkFunc.write(gReadWriteContext.pWriteBuffer, gReadWriteContext.nNbOfBytesToWrite); |
| } |
| if (gReadWriteContext.nNbOfBytesWritten != gReadWriteContext.nNbOfBytesToWrite) |
| { |
| /* Report write failure or timeout */ |
| DAL_PRINT(" Physical Write Error !!! \n"); |
| TransactionInfo.length=(uint16_t)gReadWriteContext.nNbOfBytesWritten; |
| TransactionInfo.status = PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_BOARD_COMMUNICATION_ERROR); |
| } |
| else |
| { |
| DAL_PRINT(" Physical Write Success \n"); |
| TransactionInfo.length=(uint16_t)gReadWriteContext.nNbOfBytesWritten; |
| TransactionInfo.status=NFCSTATUS_SUCCESS; |
| /* DAL_PRINT("WriteBuff[]={ "); |
| for (i = 0; i < gReadWriteContext.nNbOfBytesWritten; i++) |
| { |
| DAL_DEBUG("0x%x ", gReadWriteContext.pWriteBuffer[i]); |
| } |
| DAL_PRINT("}\n"); */ |
| |
| // Free TempWriteBuffer |
| if(gReadWriteContext.pTempWriteBuffer != NULL) |
| { |
| free(gReadWriteContext.pTempWriteBuffer); |
| } |
| } |
| /* Reset Write context */ |
| gReadWriteContext.nWriteBusy = FALSE; |
| gReadWriteContext.nWaitingOnWrite = FALSE; |
| |
| /* call LLC callback */ |
| if ((NULL != pgDalContext) && (NULL != pgDalContext->cb_if.send_complete)) |
| { |
| pgDalContext->cb_if.send_complete(pgDalContext->cb_if.pif_ctxt, |
| pgDalHwContext,&TransactionInfo); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * \ingroup grp_nfc_dal |
| * |
| * \brief DAL deferred call function |
| * This function will enable to call the callback client asyncronously and in the client context. |
| * It will post a message in a queue that will be processed by a client thread. |
| * |
| * \param[in] func The function to call when message is read from the queue |
| * \param[in] param Parameter that will be passed to the 'func' function. |
| * |
| */ |
| void phDal4Nfc_DeferredCall(pphDal4Nfc_DeferFuncPointer_t func, void *param) |
| { |
| int retvalue = 0; |
| phDal4Nfc_Message_Wrapper_t nDeferedMessageWrapper; |
| phDal4Nfc_DeferredCall_Msg_t *pDeferedMessage; |
| static phDal4Nfc_DeferredCall_Msg_t nDeferedMessageRead; |
| static phDal4Nfc_DeferredCall_Msg_t nDeferedMessageWrite; |
| |
| #ifdef USE_MQ_MESSAGE_QUEUE |
| nDeferedMessage.eMsgType = PH_DAL4NFC_MESSAGE_BASE; |
| nDeferedMessage.def_call = func; |
| nDeferedMessage.params = param; |
| retvalue = (int)mq_send(nDeferedCallMessageQueueId, (char *)&nDeferedMessage, sizeof(phDal4Nfc_DeferredCall_Msg_t), 0); |
| #else |
| if(PHDAL4NFC_READ_MESSAGE==(* (int*)param)) |
| { |
| pDeferedMessage = &nDeferedMessageRead; |
| } |
| else |
| { |
| pDeferedMessage = &nDeferedMessageWrite; |
| } |
| nDeferedMessageWrapper.mtype = 1; |
| nDeferedMessageWrapper.msg.eMsgType = PH_DAL4NFC_MESSAGE_BASE; |
| pDeferedMessage->pCallback = func; |
| pDeferedMessage->pParameter = param; |
| nDeferedMessageWrapper.msg.pMsgData = pDeferedMessage; |
| nDeferedMessageWrapper.msg.Size = sizeof(phDal4Nfc_DeferredCall_Msg_t); |
| retvalue = phDal4Nfc_msgsnd(nDeferedCallMessageQueueId, (struct msgbuf *)&nDeferedMessageWrapper, sizeof(phLibNfc_Message_t), 0); |
| #endif |
| |
| } |
| |
| #undef _DAL_4_NFC_C |
| |
