108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
/*
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* Copyright 2002-2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef KERNEL_SMP_H
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#define KERNEL_SMP_H
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#include <KernelExport.h>
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struct kernel_args;
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// intercpu messages
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enum {
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SMP_MSG_INVALIDATE_PAGE_RANGE = 0,
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SMP_MSG_INVALIDATE_PAGE_LIST,
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SMP_MSG_USER_INVALIDATE_PAGES,
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SMP_MSG_GLOBAL_INVALIDATE_PAGES,
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SMP_MSG_CPU_HALT,
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SMP_MSG_CALL_FUNCTION,
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SMP_MSG_RESCHEDULE,
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SMP_MSG_RESCHEDULE_IF_IDLE
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};
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enum {
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SMP_MSG_FLAG_ASYNC = 0x0,
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SMP_MSG_FLAG_SYNC = 0x1,
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SMP_MSG_FLAG_FREE_ARG = 0x2,
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};
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typedef uint32 cpu_mask_t;
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typedef void (*smp_call_func)(addr_t data1, int32 currentCPU, addr_t data2, addr_t data3);
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#ifdef __cplusplus
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extern "C" {
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#endif
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bool try_acquire_spinlock(spinlock* lock);
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status_t smp_init(struct kernel_args *args);
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status_t smp_per_cpu_init(struct kernel_args *args, int32 cpu);
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status_t smp_init_post_generic_syscalls(void);
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bool smp_trap_non_boot_cpus(int32 cpu, uint32* rendezVous);
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void smp_wake_up_non_boot_cpus(void);
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void smp_cpu_rendezvous(volatile uint32 *var, int current_cpu);
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void smp_send_ici(int32 targetCPU, int32 message, addr_t data, addr_t data2, addr_t data3,
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void *data_ptr, uint32 flags);
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void smp_send_multicast_ici(cpu_mask_t cpuMask, int32 message, addr_t data,
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addr_t data2, addr_t data3, void *data_ptr, uint32 flags);
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void smp_send_broadcast_ici(int32 message, addr_t data, addr_t data2, addr_t data3,
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void *data_ptr, uint32 flags);
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void smp_send_broadcast_ici_interrupts_disabled(int32 currentCPU, int32 message,
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addr_t data, addr_t data2, addr_t data3, void *data_ptr, uint32 flags);
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int32 smp_get_num_cpus(void);
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void smp_set_num_cpus(int32 numCPUs);
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int32 smp_get_current_cpu(void);
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int smp_intercpu_int_handler(int32 cpu);
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#ifdef __cplusplus
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}
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#endif
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// Unless spinlock debug features are enabled, try to inline
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// {acquire,release}_spinlock().
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#if !DEBUG_SPINLOCKS && !B_DEBUG_SPINLOCK_CONTENTION
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static inline bool
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try_acquire_spinlock_inline(spinlock* lock)
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{
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return atomic_or((int32*)lock, 1) == 0;
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}
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static inline void
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acquire_spinlock_inline(spinlock* lock)
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{
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if (try_acquire_spinlock_inline(lock))
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return;
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acquire_spinlock(lock);
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}
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static inline void
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release_spinlock_inline(spinlock* lock)
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{
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atomic_and((int32*)lock, 0);
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}
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#define try_acquire_spinlock(lock) try_acquire_spinlock_inline(lock)
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#define acquire_spinlock(lock) acquire_spinlock_inline(lock)
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#define release_spinlock(lock) release_spinlock_inline(lock)
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#endif // !DEBUG_SPINLOCKS && !B_DEBUG_SPINLOCK_CONTENTION
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#endif /* KERNEL_SMP_H */
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