1 #ifndef _ASM_X86_IRQ_VECTORS_H 2 #define _ASM_X86_IRQ_VECTORS_H 3 4 #include <linux/threads.h> 5 6 #define NMI_VECTOR 0x02 7 8 /* 9 * IDT vectors usable for external interrupt sources start 10 * at 0x20: 11 */ 12 #define FIRST_EXTERNAL_VECTOR 0x20 13 14 #ifdef CONFIG_X86_32 15 # define SYSCALL_VECTOR 0x80 16 #else 17 # define IA32_SYSCALL_VECTOR 0x80 18 #endif 19 20 /* 21 * Reserve the lowest usable priority level 0x20 - 0x2f for triggering 22 * cleanup after irq migration. 23 */ 24 #define IRQ_MOVE_CLEANUP_VECTOR FIRST_EXTERNAL_VECTOR 25 26 /* 27 * Vectors 0x30-0x3f are used for ISA interrupts. 28 */ 29 #define IRQ0_VECTOR (FIRST_EXTERNAL_VECTOR + 0x10) 30 #define IRQ1_VECTOR (IRQ0_VECTOR + 1) 31 #define IRQ2_VECTOR (IRQ0_VECTOR + 2) 32 #define IRQ3_VECTOR (IRQ0_VECTOR + 3) 33 #define IRQ4_VECTOR (IRQ0_VECTOR + 4) 34 #define IRQ5_VECTOR (IRQ0_VECTOR + 5) 35 #define IRQ6_VECTOR (IRQ0_VECTOR + 6) 36 #define IRQ7_VECTOR (IRQ0_VECTOR + 7) 37 #define IRQ8_VECTOR (IRQ0_VECTOR + 8) 38 #define IRQ9_VECTOR (IRQ0_VECTOR + 9) 39 #define IRQ10_VECTOR (IRQ0_VECTOR + 10) 40 #define IRQ11_VECTOR (IRQ0_VECTOR + 11) 41 #define IRQ12_VECTOR (IRQ0_VECTOR + 12) 42 #define IRQ13_VECTOR (IRQ0_VECTOR + 13) 43 #define IRQ14_VECTOR (IRQ0_VECTOR + 14) 44 #define IRQ15_VECTOR (IRQ0_VECTOR + 15) 45 46 /* 47 * Special IRQ vectors used by the SMP architecture, 0xf0-0xff 48 * 49 * some of the following vectors are 'rare', they are merged 50 * into a single vector (CALL_FUNCTION_VECTOR) to save vector space. 51 * TLB, reschedule and local APIC vectors are performance-critical. 52 */ 53 54 #define SPURIOUS_APIC_VECTOR 0xff 55 /* 56 * Sanity check 57 */ 58 #if ((SPURIOUS_APIC_VECTOR & 0x0F) != 0x0F) 59 # error SPURIOUS_APIC_VECTOR definition error 60 #endif 61 62 #define ERROR_APIC_VECTOR 0xfe 63 #define RESCHEDULE_VECTOR 0xfd 64 #define CALL_FUNCTION_VECTOR 0xfc 65 #define CALL_FUNCTION_SINGLE_VECTOR 0xfb 66 #define THERMAL_APIC_VECTOR 0xfa 67 68 #ifdef CONFIG_X86_32 69 /* 0xf8 - 0xf9 : free */ 70 #else 71 # define THRESHOLD_APIC_VECTOR 0xf9 72 # define UV_BAU_MESSAGE 0xf8 73 #endif 74 75 /* f0-f7 used for spreading out TLB flushes: */ 76 #define INVALIDATE_TLB_VECTOR_END 0xf7 77 #define INVALIDATE_TLB_VECTOR_START 0xf0 78 #define NUM_INVALIDATE_TLB_VECTORS 8 79 80 /* 81 * Local APIC timer IRQ vector is on a different priority level, 82 * to work around the 'lost local interrupt if more than 2 IRQ 83 * sources per level' errata. 84 */ 85 #define LOCAL_TIMER_VECTOR 0xef 86 87 /* 88 * Performance monitoring interrupt vector: 89 */ 90 #define LOCAL_PERF_VECTOR 0xee 91 92 /* 93 * First APIC vector available to drivers: (vectors 0x30-0xee) we 94 * start at 0x31(0x41) to spread out vectors evenly between priority 95 * levels. (0x80 is the syscall vector) 96 */ 97 #define FIRST_DEVICE_VECTOR (IRQ15_VECTOR + 2) 98 99 #define NR_VECTORS 256 100 101 #define FPU_IRQ 13 102 103 #define FIRST_VM86_IRQ 3 104 #define LAST_VM86_IRQ 15 105 #define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15) 106 107 #define NR_IRQS_LEGACY 16 108 109 #if defined(CONFIG_X86_IO_APIC) && !defined(CONFIG_X86_VOYAGER) 110 111 #include <asm/apicnum.h> /* need MAX_IO_APICS */ 112 113 #ifndef CONFIG_SPARSE_IRQ 114 # if NR_CPUS < MAX_IO_APICS 115 # define NR_IRQS (NR_VECTORS + (32 * NR_CPUS)) 116 # else 117 # define NR_IRQS (NR_VECTORS + (32 * MAX_IO_APICS)) 118 # endif 119 #else 120 121 # define NR_IRQS \ 122 ((8 * NR_CPUS) > (32 * MAX_IO_APICS) ? \ 123 (NR_VECTORS + (8 * NR_CPUS)) : \ 124 (NR_VECTORS + (32 * MAX_IO_APICS))) \ 125 126 #endif 127 128 #elif defined(CONFIG_X86_VOYAGER) 129 130 # define NR_IRQS 224 131 132 #else /* IO_APIC || VOYAGER */ 133 134 # define NR_IRQS 16 135 136 #endif 137 138 #endif /* _ASM_X86_IRQ_VECTORS_H */ 139