/*
 * Copyright 2021, Haiku, Inc.
 * Distributed under the terms of the MIT License.
 */
#ifndef _SMP_H_
#define _SMP_H_


#include <SupportDefs.h>


struct Mutex
{
        int32 fLock;
        
        Mutex(): fLock(0) {}

        bool TryLock()
        {
                return atomic_test_and_set(&fLock, -1, 0) == 0;
        }

        bool Lock()
        {
                while (!TryLock()) {}
                if (atomic_add(&fLock, -1) < 0) {
                }
                return true;
        }
        
        void Unlock()
        {
                atomic_add(&fLock, 1);
        }
};


struct CpuInfo
{
        uint32 phandle;
        uint32 hartId;
        uint32 plicContext;
};


CpuInfo* smp_find_cpu(uint32 phandle);

void smp_init_other_cpus(void);
void smp_boot_other_cpus(uint64 pageTable, uint64 kernel_entry);

void smp_init();


#endif  // _SMP_H_