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 /* This type is the placeholder for a hardware interrupt number. It has to
  16  * be big enough to enclose whatever representation is used by a given
  17  * platform.
  18  */
  19 typedef unsigned long irq_hw_number_t;
  20
  21 extern unsigned int nr_irq;
  22
  23 #define NO_IRQ (-1)
  24
  25 struct pt_regs;
  26 extern void do_IRQ(struct pt_regs *regs);
  27
  28 /** FIXME - not implement
  29  * irq_dispose_mapping - Unmap an interrupt
  30  * @virq: linux virq number of the interrupt to unmap
  31  */
  32 static inline void irq_dispose_mapping(unsigned int virq)
  33 {
  34         return;
  35 }
  36
  37 struct irq_host;
  38
  39 /**
  40  * irq_create_mapping - Map a hardware interrupt into linux virq space
  41  * @host: host owning this hardware interrupt or NULL for default host
  42  * @hwirq: hardware irq number in that host space
  43  *
  44  * Only one mapping per hardware interrupt is permitted. Returns a linux
  45  * virq number.
  46  * If the sense/trigger is to be specified, set_irq_type() should be called
  47  * on the number returned from that call.
  48  */
  49 extern unsigned int irq_create_mapping(struct irq_host *host,
  50                                         irq_hw_number_t hwirq);
  51
  52 #endif /* _ASM_MICROBLAZE_IRQ_H */