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80 lines
2.3 KiB
80 lines
2.3 KiB
20 years ago
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/* -*- mode: c; c-basic-offset: 8 -*- */
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/* Copyright (C) 2002
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*
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* Author: James.Bottomley@HansenPartnership.com
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*
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* linux/arch/i386/voyager/irq_vectors.h
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*
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* This file provides definitions for the VIC and QIC CPIs
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*/
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#ifndef _ASM_IRQ_VECTORS_H
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#define _ASM_IRQ_VECTORS_H
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/*
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* IDT vectors usable for external interrupt sources start
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* at 0x20:
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*/
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#define FIRST_EXTERNAL_VECTOR 0x20
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#define SYSCALL_VECTOR 0x80
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/*
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* Vectors 0x20-0x2f are used for ISA interrupts.
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*/
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/* These define the CPIs we use in linux */
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#define VIC_CPI_LEVEL0 0
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#define VIC_CPI_LEVEL1 1
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/* now the fake CPIs */
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#define VIC_TIMER_CPI 2
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#define VIC_INVALIDATE_CPI 3
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#define VIC_RESCHEDULE_CPI 4
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#define VIC_ENABLE_IRQ_CPI 5
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#define VIC_CALL_FUNCTION_CPI 6
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/* Now the QIC CPIs: Since we don't need the two initial levels,
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* these are 2 less than the VIC CPIs */
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#define QIC_CPI_OFFSET 1
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#define QIC_TIMER_CPI (VIC_TIMER_CPI - QIC_CPI_OFFSET)
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#define QIC_INVALIDATE_CPI (VIC_INVALIDATE_CPI - QIC_CPI_OFFSET)
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#define QIC_RESCHEDULE_CPI (VIC_RESCHEDULE_CPI - QIC_CPI_OFFSET)
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#define QIC_ENABLE_IRQ_CPI (VIC_ENABLE_IRQ_CPI - QIC_CPI_OFFSET)
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#define QIC_CALL_FUNCTION_CPI (VIC_CALL_FUNCTION_CPI - QIC_CPI_OFFSET)
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#define VIC_START_FAKE_CPI VIC_TIMER_CPI
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#define VIC_END_FAKE_CPI VIC_CALL_FUNCTION_CPI
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/* this is the SYS_INT CPI. */
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#define VIC_SYS_INT 8
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#define VIC_CMN_INT 15
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/* This is the boot CPI for alternate processors. It gets overwritten
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* by the above once the system has activated all available processors */
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#define VIC_CPU_BOOT_CPI VIC_CPI_LEVEL0
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#define VIC_CPU_BOOT_ERRATA_CPI (VIC_CPI_LEVEL0 + 8)
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#define NR_VECTORS 256
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#define NR_IRQS 224
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#define NR_IRQ_VECTORS NR_IRQS
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#define FPU_IRQ 13
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#define FIRST_VM86_IRQ 3
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#define LAST_VM86_IRQ 15
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#define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15)
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#ifndef __ASSEMBLY__
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extern asmlinkage void vic_cpi_interrupt(void);
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extern asmlinkage void vic_sys_interrupt(void);
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extern asmlinkage void vic_cmn_interrupt(void);
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extern asmlinkage void qic_timer_interrupt(void);
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extern asmlinkage void qic_invalidate_interrupt(void);
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extern asmlinkage void qic_reschedule_interrupt(void);
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extern asmlinkage void qic_enable_irq_interrupt(void);
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extern asmlinkage void qic_call_function_interrupt(void);
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_IRQ_VECTORS_H */
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