BT_HANDLE BT_CreateMutex(BT_ERROR *pError) { BT_HANDLE hMutex = BT_CreateHandle(&oHandleInterface, sizeof(struct _BT_OPAQUE_HANDLE), pError); if(!hMutex) { return NULL; } hMutex->pMutex = BT_kMutexCreate(); return hMutex; }
void bt_initialise_slab_second_stage() { BT_u32 i = BT_CACHE_GENERIC_MIN; while(i <= BT_CACHE_GENERIC_MAX) { BT_CACHE *pCache = BT_GetSuitableCache(i); if(!pCache) { break; } pCache->slab_mutex = BT_kMutexCreate(); i = i << 1; } }
static BT_ERROR bt_softirq_init() { BT_ERROR Error; BT_THREAD_CONFIG oConfig; oConfig.ulStackDepth = 256; oConfig.ulPriority = BT_CONFIG_INTERRUPTS_SOFTIRQ_PRIORITY; g_pvMutex = BT_kMutexCreate(); if(!g_pvMutex) { return BT_ERR_GENERIC; } BT_kMutexPend(g_pvMutex, BT_INFINITE_TIMEOUT); BT_CreateThread(softirq_dispatcher, &oConfig, &Error); return BT_ERR_NONE; }
BT_ERROR BT_CacheInit(BT_CACHE *pCache, BT_u32 ulObjectSize) { pCache->slab_mutex = BT_kMutexCreate(); return init_cache(pCache, ulObjectSize); }
static BT_HANDLE i2c_probe(const BT_INTEGRATED_DEVICE *pDevice, BT_ERROR *pError) { BT_ERROR Error = BT_ERR_NONE; BT_HANDLE hI2C = NULL; const BT_RESOURCE *pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_MEM, 0); if(!pResource) { Error = BT_ERR_INVALID_RESOURCE; goto err_out; } hI2C = BT_CreateHandle(&oHandleInterface, sizeof(struct _BT_OPAQUE_HANDLE), pError); if(!hI2C) { Error = BT_ERR_NO_MEMORY; goto err_out; } hI2C->pRegs = (ZYNQ_I2C_REGS *) bt_ioremap((void *)pResource->ulStart, BT_SIZE_4K); pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_IRQ, 0); if(!pResource) { Error = BT_ERR_INVALID_RESOURCE; goto err_free_out; } BT_u32 ulIRQ = pResource->ulStart; Error = BT_RegisterInterrupt(ulIRQ, i2c_irq_handler, hI2C); if(Error) { Error = BT_ERR_GENERIC; // Device already in use! goto err_free_out; } BT_EnableInterrupt(ulIRQ); hI2C->pDevice = pDevice; i2c_set_clock_rate(hI2C, BT_I2C_CLOCKRATE_400kHz); hI2C->pMutex = BT_kMutexCreate(); if(!hI2C->pMutex) { Error = BT_ERR_NO_MEMORY; goto err_free_int_out; } BT_kMutexPend(hI2C->pMutex, 0); pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_BUSID, 0); if(!pResource) { Error = BT_ERR_INVALID_RESOURCE; goto err_free_int_out; } BT_u32 ulBusID = pResource->ulStart; hI2C->pRegs->CONTROL |= 0x0000000E; BT_I2C_RegisterBusWithID(hI2C, ulBusID); if(pError) { *pError = Error; } return hI2C; err_free_int_out: BT_UnregisterInterrupt(ulIRQ, i2c_irq_handler, hI2C); err_free_out: BT_DestroyHandle(hI2C); err_out: if(pError) { *pError = Error; } return NULL; }