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 * Vectors 0xf0-0xfa are free (reserved for future Linux use). 54 */ 55 #ifdef CONFIG_X86_32 56 57 # define SPURIOUS_APIC_VECTOR 0xff 58 # define ERROR_APIC_VECTOR 0xfe 59 # define INVALIDATE_TLB_VECTOR 0xfd 60 # define RESCHEDULE_VECTOR 0xfc 61 # define CALL_FUNCTION_VECTOR 0xfb 62 # define CALL_FUNCTION_SINGLE_VECTOR 0xfa 63 # define THERMAL_APIC_VECTOR 0xf0 64 65 #else 66 67 #define SPURIOUS_APIC_VECTOR 0xff 68 #define ERROR_APIC_VECTOR 0xfe 69 #define RESCHEDULE_VECTOR 0xfd 70 #define CALL_FUNCTION_VECTOR 0xfc 71 #define CALL_FUNCTION_SINGLE_VECTOR 0xfb 72 #define THERMAL_APIC_VECTOR 0xfa 73 #define THRESHOLD_APIC_VECTOR 0xf9 74 #define UV_BAU_MESSAGE 0xf8 75 #define INVALIDATE_TLB_VECTOR_END 0xf7 76 #define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f7 used for TLB flush */ 77 78 #define NUM_INVALIDATE_TLB_VECTORS 8 79 80 #endif 81 82 /* 83 * Local APIC timer IRQ vector is on a different priority level, 84 * to work around the 'lost local interrupt if more than 2 IRQ 85 * sources per level' errata. 86 */ 87 #define LOCAL_TIMER_VECTOR 0xef 88 89 /* 90 * First APIC vector available to drivers: (vectors 0x30-0xee) we 91 * start at 0x31(0x41) to spread out vectors evenly between priority 92 * levels. (0x80 is the syscall vector) 93 */ 94 #define FIRST_DEVICE_VECTOR (IRQ15_VECTOR + 2) 95 96 #define NR_VECTORS 256 97 98 #define FPU_IRQ 13 99 100 #define FIRST_VM86_IRQ 3 101 #define LAST_VM86_IRQ 15 102 #define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15) 103 104 #if defined(CONFIG_X86_IO_APIC) && !defined(CONFIG_X86_VOYAGER) 105 # if NR_CPUS < MAX_IO_APICS 106 # define NR_IRQS (NR_VECTORS + (32 * NR_CPUS)) 107 # else 108 # define NR_IRQS (NR_VECTORS + (32 * MAX_IO_APICS)) 109 # endif 110 111 #elif defined(CONFIG_X86_VOYAGER) 112 113 # define NR_IRQS 224 114 115 #else /* IO_APIC || VOYAGER */ 116 117 # define NR_IRQS 16 118 119 #endif 120 121 /* Voyager specific defines */ 122 /* These define the CPIs we use in linux */ 123 #define VIC_CPI_LEVEL0 0 124 #define VIC_CPI_LEVEL1 1 125 /* now the fake CPIs */ 126 #define VIC_TIMER_CPI 2 127 #define VIC_INVALIDATE_CPI 3 128 #define VIC_RESCHEDULE_CPI 4 129 #define VIC_ENABLE_IRQ_CPI 5 130 #define VIC_CALL_FUNCTION_CPI 6 131 #define VIC_CALL_FUNCTION_SINGLE_CPI 7 132 133 /* Now the QIC CPIs: Since we don't need the two initial levels, 134 * these are 2 less than the VIC CPIs */ 135 #define QIC_CPI_OFFSET 1 136 #define QIC_TIMER_CPI (VIC_TIMER_CPI - QIC_CPI_OFFSET) 137 #define QIC_INVALIDATE_CPI (VIC_INVALIDATE_CPI - QIC_CPI_OFFSET) 138 #define QIC_RESCHEDULE_CPI (VIC_RESCHEDULE_CPI - QIC_CPI_OFFSET) 139 #define QIC_ENABLE_IRQ_CPI (VIC_ENABLE_IRQ_CPI - QIC_CPI_OFFSET) 140 #define QIC_CALL_FUNCTION_CPI (VIC_CALL_FUNCTION_CPI - QIC_CPI_OFFSET) 141 #define QIC_CALL_FUNCTION_SINGLE_CPI (VIC_CALL_FUNCTION_SINGLE_CPI - QIC_CPI_OFFSET) 142 143 #define VIC_START_FAKE_CPI VIC_TIMER_CPI 144 #define VIC_END_FAKE_CPI VIC_CALL_FUNCTION_SINGLE_CPI 145 146 /* this is the SYS_INT CPI. */ 147 #define VIC_SYS_INT 8 148 #define VIC_CMN_INT 15 149 150 /* This is the boot CPI for alternate processors. It gets overwritten 151 * by the above once the system has activated all available processors */ 152 #define VIC_CPU_BOOT_CPI VIC_CPI_LEVEL0 153 #define VIC_CPU_BOOT_ERRATA_CPI (VIC_CPI_LEVEL0 + 8) 154 155 156 #endif /* _ASM_X86_IRQ_VECTORS_H */ 157