intrdefs.h revision 1.4
1/* $NetBSD: intrdefs.h,v 1.4 2005/04/16 07:45:59 yamt Exp $ */ 2 3#ifndef _X86_INTRDEFS_H_ 4#define _X86_INTRDEFS_H_ 5 6/* 7 * Interrupt priority levels. 8 * 9 * There are tty, network and disk drivers that use free() at interrupt 10 * time, so imp > (tty | net | bio). 11 * 12 * Since run queues may be manipulated by both the statclock and tty, 13 * network, and disk drivers, clock > imp. 14 * 15 * IPL_HIGH must block everything that can manipulate a run queue. 16 * 17 * We need serial drivers to run at the absolute highest priority to 18 * avoid overruns, so serial > high. 19 * 20 * The level numbers are picked to fit into APIC vector priorities. 21 * 22 */ 23#define IPL_NONE 0x0 /* nothing */ 24#define IPL_SOFTCLOCK 0x4 /* timeouts */ 25#define IPL_SOFTNET 0x5 /* protocol stacks */ 26#define IPL_BIO 0x6 /* block I/O */ 27#define IPL_NET 0x7 /* network */ 28#define IPL_SOFTSERIAL 0x8 /* serial */ 29#define IPL_TTY 0x9 /* terminal */ 30#define IPL_VM 0xa /* memory allocation */ 31#define IPL_AUDIO 0xb /* audio */ 32#define IPL_CLOCK 0xc /* clock */ 33#define IPL_SCHED IPL_CLOCK 34#define IPL_HIGH 0xd /* everything */ 35#define IPL_SERIAL 0xd /* serial */ 36#define IPL_IPI 0xe /* inter-processor interrupts */ 37#define NIPL 16 38 39/* Interrupt sharing types. */ 40#define IST_NONE 0 /* none */ 41#define IST_PULSE 1 /* pulsed */ 42#define IST_EDGE 2 /* edge-triggered */ 43#define IST_LEVEL 3 /* level-triggered */ 44 45/* 46 * Local APIC masks. Must not conflict with SIR_* above, and must 47 * be >= NUM_LEGACY_IRQs. Note that LIR_IPI must be first. 48 */ 49#define LIR_IPI 31 50#define LIR_TIMER 30 51 52/* Soft interrupt masks. */ 53#define SIR_CLOCK 29 54#define SIR_NET 28 55#define SIR_SERIAL 27 56 57 58/* 59 * Maximum # of interrupt sources per CPU. 32 to fit in one word. 60 * ioapics can theoretically produce more, but it's not likely to 61 * happen. For multiple ioapics, things can be routed to different 62 * CPUs. 63 */ 64#define MAX_INTR_SOURCES 32 65#define NUM_LEGACY_IRQS 16 66 67/* 68 * Low and high boundaries between which interrupt gates will 69 * be allocated in the IDT. 70 */ 71#define IDT_INTR_LOW (0x20 + NUM_LEGACY_IRQS) 72#define IDT_INTR_HIGH 0xef 73 74#define X86_IPI_HALT 0x00000001 75#define X86_IPI_MICROSET 0x00000002 76#define X86_IPI_FLUSH_FPU 0x00000004 77#define X86_IPI_SYNCH_FPU 0x00000008 78#define X86_IPI_TLB 0x00000010 79#define X86_IPI_MTRR 0x00000020 80#define X86_IPI_GDT 0x00000040 81 82#define X86_NIPI 7 83 84#define X86_IPI_NAMES { "halt IPI", "timeset IPI", "FPU flush IPI", \ 85 "FPU synch IPI", "TLB shootdown IPI", \ 86 "MTRR update IPI", "GDT update IPI" } 87 88#define IREENT_MAGIC 0x18041969 89 90#endif /* _X86_INTRDEFS_H_ */ 91