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
  16 /*
  17  * the system has an on-CPU PIC and another PIC on the FPGA and other PICs on other peripherals,
  18  * so we do some routing in irq-routing.[ch] to reduce the number of false-positives seen by
  19  * drivers
  20  */
  21
  22 /* this number is used when no interrupt has been assigned */
  23 #define NO_IRQ                          (-1)
  24
  25 #define NR_IRQ_LOG2_ACTIONS_PER_GROUP   5
  26 #define NR_IRQ_ACTIONS_PER_GROUP        (1 << NR_IRQ_LOG2_ACTIONS_PER_GROUP)
  27 #define NR_IRQ_GROUPS                   4
  28 #define NR_IRQS                         (NR_IRQ_ACTIONS_PER_GROUP * NR_IRQ_GROUPS)
  29
  30 /* probe returns a 32-bit IRQ mask:-/ */
  31 #define MIN_PROBE_IRQ   (NR_IRQS - 32)
  32
  33 static inline int irq_canonicalize(int irq)
  34 {
  35         return irq;
  36 }
  37
  38 extern void disable_irq_nosync(unsigned int irq);
  39 extern void disable_irq(unsigned int irq);
  40 extern void enable_irq(unsigned int irq);
  41
  42
  43 #endif /* _ASM_IRQ_H_ */