arch/microblaze/include/asm/irq.h

   1 /*
   2  * Copyright (C) 2006 Atmark Techno, Inc.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License. See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  */
   8
   9 #ifndef _ASM_MICROBLAZE_IRQ_H
  10 #define _ASM_MICROBLAZE_IRQ_H
  11
  12 #define NR_IRQS 32
  13 #include <asm-generic/irq.h>
  14
  15 #include <linux/interrupt.h>
  16
  17 /* This type is the placeholder for a hardware interrupt number. It has to
  18  * be big enough to enclose whatever representation is used by a given
  19  * platform.
  20  */
  21 typedef unsigned long irq_hw_number_t;
  22
  23 extern unsigned int nr_irq;
  24
  25 #define NO_IRQ (-1)
  26
  27 struct pt_regs;
  28 extern void do_IRQ(struct pt_regs *regs);
  29
  30 /** FIXME - not implement
  31  * irq_dispose_mapping - Unmap an interrupt
  32  * @virq: linux virq number of the interrupt to unmap
  33  */
  34 static inline void irq_dispose_mapping(unsigned int virq)
  35 {
  36         return;
  37 }
  38
  39 struct irq_host;
  40
  41 /**
  42  * irq_create_mapping - Map a hardware interrupt into linux virq space
  43  * @host: host owning this hardware interrupt or NULL for default host
  44  * @hwirq: hardware irq number in that host space
  45  *
  46  * Only one mapping per hardware interrupt is permitted. Returns a linux
  47  * virq number.
  48  * If the sense/trigger is to be specified, set_irq_type() should be called
  49  * on the number returned from that call.
  50  */
  51 extern unsigned int irq_create_mapping(struct irq_host *host,
  52                                         irq_hw_number_t hwirq);
  53
  54 #endif /* _ASM_MICROBLAZE_IRQ_H */