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/*
*
* Copyright (C) 2013-2014 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.
*
******************************************************************************/
#ifndef _PHNXPNCIHAL_UTILS_H_
#define _PHNXPNCIHAL_UTILS_H_
#include <assert.h>
#include <phNfcStatus.h>
#include <pthread.h>
#include <semaphore.h>
/********************* Definitions and structures *****************************/
/* List structures */
struct listNode {
void* pData;
struct listNode* pNext;
};
struct listHead {
struct listNode* pFirst;
pthread_mutex_t mutex;
};
/* Semaphore handling structure */
typedef struct phNxpNciHal_Sem {
/* Semaphore used to wait for callback */
sem_t sem;
/* Used to store the status sent by the callback */
NFCSTATUS status;
/* Used to provide a local context to the callback */
void* pContext;
} phNxpNciHal_Sem_t;
/* Semaphore helper macros */
#define SEM_WAIT(cb_data) sem_wait(&((cb_data).sem))
#define SEM_POST(p_cb_data) sem_post(&((p_cb_data)->sem))
/* Semaphore and mutex monitor */
typedef struct phNxpNciHal_Monitor {
/* Mutex protecting native library against reentrance */
pthread_mutex_t reentrance_mutex;
/* Mutex protecting native library against concurrency */
pthread_mutex_t concurrency_mutex;
/* List used to track pending semaphores waiting for callback */
struct listHead sem_list;
} phNxpNciHal_Monitor_t;
/************************ Exposed functions ***********************************/
/* List functions */
int listInit(struct listHead* pList);
int listDestroy(struct listHead* pList);
int listAdd(struct listHead* pList, void* pData);
int listRemove(struct listHead* pList, void* pData);
int listGetAndRemoveNext(struct listHead* pList, void** ppData);
void listDump(struct listHead* pList);
/* NXP NCI HAL utility functions */
phNxpNciHal_Monitor_t* phNxpNciHal_init_monitor(void);
void phNxpNciHal_cleanup_monitor(void);
phNxpNciHal_Monitor_t* phNxpNciHal_get_monitor(void);
NFCSTATUS phNxpNciHal_init_cb_data(phNxpNciHal_Sem_t* pCallbackData,
void* pContext);
void phNxpNciHal_cleanup_cb_data(phNxpNciHal_Sem_t* pCallbackData);
void phNxpNciHal_releaseall_cb_data(void);
void phNxpNciHal_print_packet(const char* pString, const uint8_t* p_data,
uint16_t len);
void phNxpNciHal_emergency_recovery(void);
/* Lock unlock helper macros */
/* Lock unlock helper macros */
#define REENTRANCE_LOCK() \
if (phNxpNciHal_get_monitor()) \
pthread_mutex_lock(&phNxpNciHal_get_monitor()->reentrance_mutex)
#define REENTRANCE_UNLOCK() \
if (phNxpNciHal_get_monitor()) \
pthread_mutex_unlock(&phNxpNciHal_get_monitor()->reentrance_mutex)
#define CONCURRENCY_LOCK() \
if (phNxpNciHal_get_monitor()) \
pthread_mutex_lock(&phNxpNciHal_get_monitor()->concurrency_mutex)
#define CONCURRENCY_UNLOCK() \
if (phNxpNciHal_get_monitor()) \
pthread_mutex_unlock(&phNxpNciHal_get_monitor()->concurrency_mutex)
#endif /* _PHNXPNCIHAL_UTILS_H_ */
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