include/asm-frv/irq.h

   1 /* irq.h: FRV IRQ definitions
   2  *
   3  * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _ASM_IRQ_H_
  13 #define _ASM_IRQ_H_
  14
  15 #include <linux/config.h>
  16
  17 /*
  18  * the system has an on-CPU PIC and another PIC on the FPGA and other PICs on other peripherals,
  19  * so we do some routing in irq-routing.[ch] to reduce the number of false-positives seen by
  20  * drivers
  21  */
  22
  23 /* this number is used when no interrupt has been assigned */
  24 #define NO_IRQ                          (-1)
  25
  26 #define NR_IRQ_LOG2_ACTIONS_PER_GROUP   5
  27 #define NR_IRQ_ACTIONS_PER_GROUP        (1 << NR_IRQ_LOG2_ACTIONS_PER_GROUP)
  28 #define NR_IRQ_GROUPS                   4
  29 #define NR_IRQS                         (NR_IRQ_ACTIONS_PER_GROUP * NR_IRQ_GROUPS)
  30
  31 /* probe returns a 32-bit IRQ mask:-/ */
  32 #define MIN_PROBE_IRQ   (NR_IRQS - 32)
  33
  34 static inline int irq_canonicalize(int irq)
  35 {
  36         return irq;
  37 }
  38
  39 extern void disable_irq_nosync(unsigned int irq);
  40 extern void disable_irq(unsigned int irq);
  41 extern void enable_irq(unsigned int irq);
  42
  43
  44 #endif /* _ASM_IRQ_H_ */