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| Rev | Author | Line No. | Line |
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| 424 | giacomo | 1 | #ifndef _ASM_IRQ_VECTORS_H |
| 2 | #define _ASM_IRQ_VECTORS_H |
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| 3 | |||
| 4 | /* |
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| 5 | * IDT vectors usable for external interrupt sources start |
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| 6 | * at 0x20: |
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| 7 | */ |
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| 8 | #define FIRST_EXTERNAL_VECTOR 0x20 |
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| 9 | |||
| 10 | #define SYSCALL_VECTOR 0x80 |
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| 11 | |||
| 12 | /* |
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| 13 | * Vectors 0x20-0x2f are used for ISA interrupts. |
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| 14 | */ |
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| 15 | |||
| 16 | /* |
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| 17 | * Special IRQ vectors used by the SMP architecture, 0xf0-0xff |
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| 18 | * |
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| 19 | * some of the following vectors are 'rare', they are merged |
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| 20 | * into a single vector (CALL_FUNCTION_VECTOR) to save vector space. |
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| 21 | * TLB, reschedule and local APIC vectors are performance-critical. |
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| 22 | * |
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| 23 | * Vectors 0xf0-0xfa are free (reserved for future Linux use). |
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| 24 | */ |
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| 25 | #define SPURIOUS_APIC_VECTOR 0xff |
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| 26 | #define ERROR_APIC_VECTOR 0xfe |
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| 27 | #define INVALIDATE_TLB_VECTOR 0xfd |
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| 28 | #define RESCHEDULE_VECTOR 0xfc |
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| 29 | #define CALL_FUNCTION_VECTOR 0xfb |
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| 30 | |||
| 31 | #define THERMAL_APIC_VECTOR 0xf0 |
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| 32 | /* |
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| 33 | * Local APIC timer IRQ vector is on a different priority level, |
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| 34 | * to work around the 'lost local interrupt if more than 2 IRQ |
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| 35 | * sources per level' errata. |
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| 36 | */ |
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| 37 | #define LOCAL_TIMER_VECTOR 0xef |
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| 38 | |||
| 39 | /* |
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| 40 | * First APIC vector available to drivers: (vectors 0x30-0xee) |
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| 41 | * we start at 0x31 to spread out vectors evenly between priority |
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| 42 | * levels. (0x80 is the syscall vector) |
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| 43 | */ |
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| 44 | #define FIRST_DEVICE_VECTOR 0x31 |
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| 45 | #define FIRST_SYSTEM_VECTOR 0xef |
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| 46 | |||
| 47 | #define TIMER_IRQ 0 |
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| 48 | |||
| 49 | /* |
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| 50 | * |
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| 51 | */ |
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| 52 | #define NR_IRQS 224 |
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| 53 | #define NR_IRQ_VECTORS NR_IRQS |
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| 54 | |||
| 55 | #define FPU_IRQ 13 |
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| 56 | |||
| 57 | #define FIRST_VM86_IRQ 3 |
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| 58 | #define LAST_VM86_IRQ 15 |
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| 59 | #define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15) |
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| 60 | |||
| 61 | #endif /* _ASM_IRQ_VECTORS_H */ |