1 /* $NetBSD: intrdefs.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */ 2 3 #ifndef _i386_INTRDEFS_H 4 #define _i386_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_IMP IPL_VM 32 #define IPL_AUDIO 0xb /* audio */ 33 #define IPL_CLOCK 0xc /* clock */ 34 #define IPL_SCHED IPL_CLOCK 35 #define IPL_HIGH 0xd /* everything */ 36 #define IPL_SERIAL 0xd /* serial */ 37 #define IPL_IPI 0xe /* inter-processor interrupts */ 38 #define NIPL 16 39 40 /* Interrupt sharing types. */ 41 #define IST_NONE 0 /* none */ 42 #define IST_PULSE 1 /* pulsed */ 43 #define IST_EDGE 2 /* edge-triggered */ 44 #define IST_LEVEL 3 /* level-triggered */ 45 46 /* 47 * Local APIC masks. Must not conflict with SIR_* above, and must 48 * be >= NUM_LEGACY_IRQs. Note that LIR_IPI must be first. 49 */ 50 #define LIR_IPI 31 51 #define LIR_TIMER 30 52 53 /* Soft interrupt masks. */ 54 #define SIR_CLOCK 29 55 #define SIR_NET 28 56 #define SIR_SERIAL 27 57 58 59 /* 60 * Maximum # of interrupt sources per CPU. 32 to fit in one word. 61 * ioapics can theoretically produce more, but it's not likely to 62 * happen. For multiple ioapics, things can be routed to different 63 * CPUs. 64 */ 65 #define MAX_INTR_SOURCES 32 66 #define NUM_LEGACY_IRQS 16 67 68 /* 69 * Low and high boundaries between which interrupt gates will 70 * be allocated in the IDT. 71 */ 72 #define IDT_INTR_LOW (0x20 + NUM_LEGACY_IRQS) 73 #define IDT_INTR_HIGH 0xef 74 75 #define X86_IPI_HALT 0x00000001 76 #define X86_IPI_MICROSET 0x00000002 77 #define X86_IPI_FLUSH_FPU 0x00000004 78 #define X86_IPI_SYNCH_FPU 0x00000008 79 #define X86_IPI_TLB 0x00000010 80 #define X86_IPI_MTRR 0x00000020 81 #define X86_IPI_GDT 0x00000040 82 83 #define X86_NIPI 7 84 85 #define X86_IPI_NAMES { "halt IPI", "timeset IPI", "FPU flush IPI", \ 86 "FPU synch IPI", "TLB shootdown IPI", \ 87 "MTRR update IPI", "GDT update IPI" } 88 89 #endif /* _X86_INTRDEFS_H */ 90