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polyfractal 2016-12-30 18:23:32 -05:00
parent d4f581cea3
commit 34016a7bd3
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64
component/os/os_dep/device_lock.c Normal file
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/*
* Routines to access hardware
*
* Copyright (c) 2013 Realtek Semiconductor Corp.
*
* This module is a confidential and proprietary property of RealTek and
* possession or use of this module requires written permission of RealTek.
*/
#include "osdep_service.h"
#include "device_lock.h"
//------------------------------------------------------
#define DEVICE_MUTEX_IS_INIT(device) (mutex_init & (1<<device))
#define DEVICE_MUTEX_SET_INIT(device) (mutex_init |= (1<<device))
#define DEVICE_MUTEX_CLR_INIT(device) (mutex_init &= (~(1<<device)))
static u32 mutex_init = 0;
static _mutex device_mutex[RT_DEV_LOCK_MAX];
//======================================================
static void device_mutex_init(RT_DEV_LOCK_E device)
{
if(!DEVICE_MUTEX_IS_INIT(device)){
_lock lock;
_irqL irqL;
rtw_enter_critical(&lock, &irqL);
if(!DEVICE_MUTEX_IS_INIT(device)){
rtw_mutex_init(&device_mutex[device]);
DEVICE_MUTEX_SET_INIT(device);
}
rtw_exit_critical(&lock, &irqL);
}
}
//======================================================
static void device_mutex_free(RT_DEV_LOCK_E device)
{
if(DEVICE_MUTEX_IS_INIT(device)){
_lock lock;
_irqL irqL;
rtw_enter_critical(&lock, &irqL);
if(!DEVICE_MUTEX_IS_INIT(device)){
rtw_mutex_free(&device_mutex[device]);
DEVICE_MUTEX_CLR_INIT(device);
}
rtw_exit_critical(&lock, &irqL);
}
}
//======================================================
void device_mutex_lock(RT_DEV_LOCK_E device)
{
device_mutex_init(device);
while(rtw_mutex_get_timeout(&device_mutex[device], 10000)<0)
printf("device lock timeout: %d\n", device);
}
//======================================================
void device_mutex_unlock(RT_DEV_LOCK_E device)
{
device_mutex_init(device);
rtw_mutex_put(&device_mutex[device]);
}