minix/sys/arch/x86/include/intrdefs.h

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/* $NetBSD: intrdefs.h,v 1.17 2011/11/06 11:40:47 cherry Exp $ */
#ifndef _X86_INTRDEFS_H_
#define _X86_INTRDEFS_H_
/* Interrupt priority levels. */
#define IPL_NONE 0x0 /* nothing */
#define IPL_PREEMPT 0x1 /* fake, to prevent recursive preemptions */
#define IPL_SOFTCLOCK 0x2 /* timeouts */
#define IPL_SOFTBIO 0x3 /* block I/O passdown */
#define IPL_SOFTNET 0x4 /* protocol stacks */
#define IPL_SOFTSERIAL 0x5 /* serial passdown */
#define IPL_VM 0x6 /* low I/O, memory allocation */
#define IPL_SCHED 0x7 /* medium I/O, scheduler, clock */
#define IPL_HIGH 0x8 /* high I/O, statclock, IPIs */
#define NIPL 9
/* Interrupt sharing types. */
#define IST_NONE 0 /* none */
#define IST_PULSE 1 /* pulsed */
#define IST_EDGE 2 /* edge-triggered */
#define IST_LEVEL 3 /* level-triggered */
/*
* Local APIC masks and software interrupt masks, in order
* of priority. Must not conflict with SIR_* below.
*/
#define LIR_IPI 31
#define LIR_TIMER 30
/*
* XXX These should be lowest numbered, but right now would
* conflict with the legacy IRQs. Their current position
* means that soft interrupt take priority over hardware
* interrupts when lowering the priority level!
*/
#define SIR_SERIAL 29
#define SIR_NET 28
#define SIR_BIO 27
#define SIR_CLOCK 26
#define SIR_PREEMPT 25
/*
* Maximum # of interrupt sources per CPU. 32 to fit in one word.
* ioapics can theoretically produce more, but it's not likely to
* happen. For multiple ioapics, things can be routed to different
* CPUs.
*/
#define MAX_INTR_SOURCES 32
#define NUM_LEGACY_IRQS 16
/*
* Low and high boundaries between which interrupt gates will
* be allocated in the IDT.
*/
#define IDT_INTR_LOW (0x20 + NUM_LEGACY_IRQS)
#define IDT_INTR_HIGH 0xef
#ifndef XEN
#define X86_IPI_HALT 0x00000001
#define X86_IPI_MICROSET 0x00000002
#define X86_IPI__UNUSED1 0x00000004
#define X86_IPI_SYNCH_FPU 0x00000008
#define X86_IPI_MTRR 0x00000010
#define X86_IPI_GDT 0x00000020
#define X86_IPI_XCALL 0x00000040
#define X86_IPI_ACPI_CPU_SLEEP 0x00000080
#define X86_IPI_KPREEMPT 0x00000100
#define X86_NIPI 9
#define X86_IPI_NAMES { "halt IPI", "timeset IPI", "unused", \
"FPU synch IPI", "MTRR update IPI", \
"GDT update IPI", "xcall IPI", \
"ACPI CPU sleep IPI", "kpreempt IPI" }
#endif /* XEN */
#define IREENT_MAGIC 0x18041969
#endif /* _X86_INTRDEFS_H_ */