2024-09-09 08:52:07 +00:00
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
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* Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
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*/
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#ifndef _ASM_IRQ_H
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#define _ASM_IRQ_H
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#include <linux/linkage.h>
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#include <linux/smp.h>
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#include <linux/irqdomain.h>
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#include <asm/mipsmtregs.h>
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#include <irq.h>
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#ifdef CONFIG_I8259
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static inline int irq_canonicalize(int irq)
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{
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return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq);
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}
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#else
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#define irq_canonicalize(irq) (irq) /* Sane hardware, sane code ... */
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#endif
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2024-09-09 08:57:42 +00:00
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asmlinkage void plat_irq_dispatch(void);
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2024-09-09 08:52:07 +00:00
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extern void do_IRQ(unsigned int irq);
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extern void arch_init_irq(void);
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extern void spurious_interrupt(void);
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extern int allocate_irqno(void);
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extern void alloc_legacy_irqno(void);
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extern void free_irqno(unsigned int irq);
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/*
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* Before R2 the timer and performance counter interrupts were both fixed to
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2024-09-09 08:57:42 +00:00
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* IE7. Since R2 their number has to be read from the c0_intctl register.
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2024-09-09 08:52:07 +00:00
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*/
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#define CP0_LEGACY_COMPARE_IRQ 7
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2024-09-09 08:57:42 +00:00
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#define CP0_LEGACY_PERFCNT_IRQ 7
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2024-09-09 08:52:07 +00:00
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extern int cp0_compare_irq;
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extern int cp0_compare_irq_shift;
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extern int cp0_perfcount_irq;
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#endif /* _ASM_IRQ_H */
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