8f01c08a34
on Alpha 4100s.
Basically, if you're halting or you're rebooting, you should
tell all other processors to halt first. Define IPI_HALT- IPI_STOP
is not what we want for this purpose, which will call prom_halt(0)
on receipt.
The processor running the halt or reboot wil send an IPI_HALT to all
other processors, delay a bit, then continue to do what what it was
planning on doing (prom_halt({0|1})).
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $FreeBSD$
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*
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*/
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#ifndef _MACHINE_SMP_H_
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#define _MACHINE_SMP_H_
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#ifdef _KERNEL
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/*
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* Interprocessor interrupts for SMP.
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*/
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#define IPI_INVLTLB 0x0001
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#define IPI_RENDEZVOUS 0x0002
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#define IPI_AST 0x0004
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#define IPI_CHECKSTATE 0x0008
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#define IPI_STOP 0x0010
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#define IPI_HALT 0x1000
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#ifndef LOCORE
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extern u_int boot_cpu_id;
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void ipi_selected(u_int cpus, u_int64_t ipi);
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void ipi_all(u_int64_t ipi);
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void ipi_all_but_self(u_int64_t ipi);
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void ipi_self(u_int64_t ipi);
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void smp_handle_ipi(struct trapframe *frame);
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void smp_init_secondary(void);
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#endif /* !LOCORE */
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#endif /* _KERNEL */
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#endif /* _MACHINE_SMP_H_ */
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