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112 lines
3.6 KiB
112 lines
3.6 KiB
/*
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*
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* Copyright (C) 2013-2018 NXP Semiconductors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#ifndef _PHNXPNCIHAL_UTILS_H_
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#define _PHNXPNCIHAL_UTILS_H_
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#include <assert.h>
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#include <errno.h>
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#include <phNfcStatus.h>
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#include <pthread.h>
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#include <semaphore.h>
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/********************* Definitions and structures *****************************/
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/* List structures */
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struct listNode {
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void* pData;
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struct listNode* pNext;
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};
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struct listHead {
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struct listNode* pFirst;
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pthread_mutex_t mutex;
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};
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/* Semaphore handling structure */
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typedef struct phNxpNciHal_Sem {
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/* Semaphore used to wait for callback */
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sem_t sem;
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/* Used to store the status sent by the callback */
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NFCSTATUS status;
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/* Used to provide a local context to the callback */
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void* pContext;
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} phNxpNciHal_Sem_t;
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/* Semaphore helper macros */
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#define SEM_WAIT(cb_data) \
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((sem_wait(&((cb_data).sem)) == 0) \
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? 0 \
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: (errno == EINTR) ? sem_wait(&((cb_data).sem)) : -1)
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#define SEM_POST(p_cb_data) sem_post(&((p_cb_data)->sem))
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/* Semaphore and mutex monitor */
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typedef struct phNxpNciHal_Monitor {
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/* Mutex protecting native library against reentrance */
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pthread_mutex_t reentrance_mutex;
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/* Mutex protecting native library against concurrency */
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pthread_mutex_t concurrency_mutex;
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/* List used to track pending semaphores waiting for callback */
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struct listHead sem_list;
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} phNxpNciHal_Monitor_t;
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/************************ Exposed functions ***********************************/
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/* List functions */
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int listInit(struct listHead* pList);
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int listDestroy(struct listHead* pList);
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int listAdd(struct listHead* pList, void* pData);
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int listRemove(struct listHead* pList, void* pData);
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int listGetAndRemoveNext(struct listHead* pList, void** ppData);
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void listDump(struct listHead* pList);
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/* NXP NCI HAL utility functions */
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phNxpNciHal_Monitor_t* phNxpNciHal_init_monitor(void);
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void phNxpNciHal_cleanup_monitor(void);
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phNxpNciHal_Monitor_t* phNxpNciHal_get_monitor(void);
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NFCSTATUS phNxpNciHal_init_cb_data(phNxpNciHal_Sem_t* pCallbackData,
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void* pContext);
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void phNxpNciHal_cleanup_cb_data(phNxpNciHal_Sem_t* pCallbackData);
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void phNxpNciHal_releaseall_cb_data(void);
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void phNxpNciHal_print_packet(const char* pString, const uint8_t* p_data,
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uint16_t len);
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void phNxpNciHal_emergency_recovery(uint8_t status);
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/* Lock unlock helper macros */
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/* Lock unlock helper macros */
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#define REENTRANCE_LOCK() \
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if (phNxpNciHal_get_monitor()) \
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pthread_mutex_lock(&phNxpNciHal_get_monitor()->reentrance_mutex)
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#define REENTRANCE_UNLOCK() \
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if (phNxpNciHal_get_monitor()) \
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pthread_mutex_unlock(&phNxpNciHal_get_monitor()->reentrance_mutex)
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#define CONCURRENCY_LOCK() \
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if (phNxpNciHal_get_monitor()) \
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pthread_mutex_lock(&phNxpNciHal_get_monitor()->concurrency_mutex)
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#define CONCURRENCY_UNLOCK() \
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if (phNxpNciHal_get_monitor()) \
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pthread_mutex_unlock(&phNxpNciHal_get_monitor()->concurrency_mutex)
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#endif /* _PHNXPNCIHAL_UTILS_H_ */
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