45 строки
1.2 KiB
C
45 строки
1.2 KiB
C
/* irq.h: FRV IRQ definitions
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*
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* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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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/config.h>
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/*
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* the system has an on-CPU PIC and another PIC on the FPGA and other PICs on other peripherals,
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* so we do some routing in irq-routing.[ch] to reduce the number of false-positives seen by
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* drivers
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*/
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/* this number is used when no interrupt has been assigned */
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#define NO_IRQ (-1)
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#define NR_IRQ_LOG2_ACTIONS_PER_GROUP 5
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#define NR_IRQ_ACTIONS_PER_GROUP (1 << NR_IRQ_LOG2_ACTIONS_PER_GROUP)
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#define NR_IRQ_GROUPS 4
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#define NR_IRQS (NR_IRQ_ACTIONS_PER_GROUP * NR_IRQ_GROUPS)
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/* probe returns a 32-bit IRQ mask:-/ */
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#define MIN_PROBE_IRQ (NR_IRQS - 32)
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static inline int irq_canonicalize(int irq)
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{
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return irq;
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}
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extern void disable_irq_nosync(unsigned int irq);
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extern void disable_irq(unsigned int irq);
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extern void enable_irq(unsigned int irq);
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#endif /* _ASM_IRQ_H_ */
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