Logo Search packages:      
Sourcecode: linux version File versions  Download package

irq.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1992 Linus Torvalds
 * Copyright (C) 1994 - 2000 Ralf Baechle
 * Copyright (C) 2006 Thomas Bogendoerfer
 */
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>

#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/sni.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>

void (*sni_hwint)(void);

asmlinkage void plat_irq_dispatch(void)
{
      sni_hwint();
}

/* ISA irq handler */
static irqreturn_t sni_isa_irq_handler(int dummy, void *p)
{
      int irq;

      irq = i8259_irq();
      if (unlikely(irq < 0))
            return IRQ_NONE;

      do_IRQ(irq);
      return IRQ_HANDLED;
}

struct irqaction sni_isa_irq = {
      .handler = sni_isa_irq_handler,
      .name = "ISA",
      .flags = IRQF_SHARED
};

/*
 * On systems with i8259-style interrupt controllers we assume for
 * driver compatibility reasons interrupts 0 - 15 to be the i8295
 * interrupts even if the hardware uses a different interrupt numbering.
 */
void __init arch_init_irq(void)
{
      init_i8259_irqs();                  /* Integrated i8259  */
      switch (sni_brd_type) {
      case SNI_BRD_10:
      case SNI_BRD_10NEW:
      case SNI_BRD_TOWER_OASIC:
      case SNI_BRD_MINITOWER:
              sni_a20r_irq_init();
              break;

      case SNI_BRD_PCI_TOWER:
              sni_pcit_irq_init();
              break;

      case SNI_BRD_PCI_TOWER_CPLUS:
              sni_pcit_cplus_irq_init();
              break;

      case SNI_BRD_RM200:
              sni_rm200_irq_init();
              break;

      case SNI_BRD_PCI_MTOWER:
      case SNI_BRD_PCI_DESKTOP:
      case SNI_BRD_PCI_MTOWER_CPLUS:
              sni_pcimt_irq_init();
              break;
      }
}

Generated by  Doxygen 1.6.0   Back to index